outline_panel.rs

   1mod outline_panel_settings;
   2
   3use anyhow::Context as _;
   4use collections::{BTreeSet, HashMap, HashSet, hash_map};
   5use db::kvp::KEY_VALUE_STORE;
   6use editor::{
   7    AnchorRangeExt, Bias, DisplayPoint, Editor, EditorEvent, ExcerptId, ExcerptRange,
   8    MultiBufferSnapshot, RangeToAnchorExt, SelectionEffects,
   9    display_map::ToDisplayPoint,
  10    items::{entry_git_aware_label_color, entry_label_color},
  11    scroll::{Autoscroll, ScrollAnchor},
  12};
  13use file_icons::FileIcons;
  14use fuzzy::{StringMatch, StringMatchCandidate, match_strings};
  15use gpui::{
  16    Action, AnyElement, App, AppContext as _, AsyncWindowContext, Bounds, ClipboardItem, Context,
  17    DismissEvent, Div, ElementId, Entity, EventEmitter, FocusHandle, Focusable, HighlightStyle,
  18    InteractiveElement, IntoElement, KeyContext, ListHorizontalSizingBehavior, ListSizingBehavior,
  19    MouseButton, MouseDownEvent, ParentElement, Pixels, Point, Render, ScrollStrategy,
  20    SharedString, Stateful, StatefulInteractiveElement as _, Styled, Subscription, Task,
  21    UniformListScrollHandle, WeakEntity, Window, actions, anchored, deferred, div, point, px, size,
  22    uniform_list,
  23};
  24use itertools::Itertools;
  25use language::{Anchor, BufferId, BufferSnapshot, OffsetRangeExt, OutlineItem};
  26use menu::{Cancel, SelectFirst, SelectLast, SelectNext, SelectPrevious};
  27use std::{
  28    cmp,
  29    collections::BTreeMap,
  30    hash::Hash,
  31    ops::Range,
  32    path::{Path, PathBuf},
  33    sync::{
  34        Arc, OnceLock,
  35        atomic::{self, AtomicBool},
  36    },
  37    time::Duration,
  38    u32,
  39};
  40
  41use outline_panel_settings::{DockSide, OutlinePanelSettings, ShowIndentGuides};
  42use project::{File, Fs, GitEntry, GitTraversal, Project, ProjectItem};
  43use search::{BufferSearchBar, ProjectSearchView};
  44use serde::{Deserialize, Serialize};
  45use settings::{Settings, SettingsStore};
  46use smol::channel;
  47use theme::{SyntaxTheme, ThemeSettings};
  48use ui::{
  49    ContextMenu, FluentBuilder, HighlightedLabel, IconButton, IconButtonShape, IndentGuideColors,
  50    IndentGuideLayout, ListItem, ScrollAxes, Scrollbars, Tab, Tooltip, WithScrollbar, prelude::*,
  51};
  52use util::{RangeExt, ResultExt, TryFutureExt, debug_panic, rel_path::RelPath};
  53use workspace::{
  54    OpenInTerminal, WeakItemHandle, Workspace,
  55    dock::{DockPosition, Panel, PanelEvent},
  56    item::ItemHandle,
  57    searchable::{SearchEvent, SearchableItem},
  58};
  59use worktree::{Entry, ProjectEntryId, WorktreeId};
  60
  61actions!(
  62    outline_panel,
  63    [
  64        /// Collapses all entries in the outline tree.
  65        CollapseAllEntries,
  66        /// Collapses the currently selected entry.
  67        CollapseSelectedEntry,
  68        /// Expands all entries in the outline tree.
  69        ExpandAllEntries,
  70        /// Expands the currently selected entry.
  71        ExpandSelectedEntry,
  72        /// Folds the selected directory.
  73        FoldDirectory,
  74        /// Opens the selected entry in the editor.
  75        OpenSelectedEntry,
  76        /// Reveals the selected item in the system file manager.
  77        RevealInFileManager,
  78        /// Scroll half a page upwards
  79        ScrollUp,
  80        /// Scroll half a page downwards
  81        ScrollDown,
  82        /// Scroll until the cursor displays at the center
  83        ScrollCursorCenter,
  84        /// Scroll until the cursor displays at the top
  85        ScrollCursorTop,
  86        /// Scroll until the cursor displays at the bottom
  87        ScrollCursorBottom,
  88        /// Selects the parent of the current entry.
  89        SelectParent,
  90        /// Toggles the pin status of the active editor.
  91        ToggleActiveEditorPin,
  92        /// Unfolds the selected directory.
  93        UnfoldDirectory,
  94        /// Toggles focus on the outline panel.
  95        ToggleFocus,
  96    ]
  97);
  98
  99const OUTLINE_PANEL_KEY: &str = "OutlinePanel";
 100const UPDATE_DEBOUNCE: Duration = Duration::from_millis(50);
 101
 102type Outline = OutlineItem<language::Anchor>;
 103type HighlightStyleData = Arc<OnceLock<Vec<(Range<usize>, HighlightStyle)>>>;
 104
 105pub struct OutlinePanel {
 106    fs: Arc<dyn Fs>,
 107    width: Option<Pixels>,
 108    project: Entity<Project>,
 109    workspace: WeakEntity<Workspace>,
 110    active: bool,
 111    pinned: bool,
 112    scroll_handle: UniformListScrollHandle,
 113    rendered_entries_len: usize,
 114    context_menu: Option<(Entity<ContextMenu>, Point<Pixels>, Subscription)>,
 115    focus_handle: FocusHandle,
 116    pending_serialization: Task<Option<()>>,
 117    fs_entries_depth: HashMap<(WorktreeId, ProjectEntryId), usize>,
 118    fs_entries: Vec<FsEntry>,
 119    fs_children_count: HashMap<WorktreeId, HashMap<Arc<RelPath>, FsChildren>>,
 120    collapsed_entries: HashSet<CollapsedEntry>,
 121    unfolded_dirs: HashMap<WorktreeId, BTreeSet<ProjectEntryId>>,
 122    selected_entry: SelectedEntry,
 123    active_item: Option<ActiveItem>,
 124    _subscriptions: Vec<Subscription>,
 125    new_entries_for_fs_update: HashSet<ExcerptId>,
 126    fs_entries_update_task: Task<()>,
 127    cached_entries_update_task: Task<()>,
 128    reveal_selection_task: Task<anyhow::Result<()>>,
 129    outline_fetch_tasks: HashMap<(BufferId, ExcerptId), Task<()>>,
 130    excerpts: HashMap<BufferId, HashMap<ExcerptId, Excerpt>>,
 131    cached_entries: Vec<CachedEntry>,
 132    filter_editor: Entity<Editor>,
 133    mode: ItemsDisplayMode,
 134    max_width_item_index: Option<usize>,
 135    preserve_selection_on_buffer_fold_toggles: HashSet<BufferId>,
 136    pending_default_expansion_depth: Option<usize>,
 137    outline_children_cache: HashMap<BufferId, HashMap<(Range<Anchor>, usize), bool>>,
 138}
 139
 140#[derive(Debug)]
 141enum ItemsDisplayMode {
 142    Search(SearchState),
 143    Outline,
 144}
 145
 146#[derive(Debug)]
 147struct SearchState {
 148    kind: SearchKind,
 149    query: String,
 150    matches: Vec<(Range<editor::Anchor>, Arc<OnceLock<SearchData>>)>,
 151    highlight_search_match_tx: channel::Sender<HighlightArguments>,
 152    _search_match_highlighter: Task<()>,
 153    _search_match_notify: Task<()>,
 154}
 155
 156struct HighlightArguments {
 157    multi_buffer_snapshot: MultiBufferSnapshot,
 158    match_range: Range<editor::Anchor>,
 159    search_data: Arc<OnceLock<SearchData>>,
 160}
 161
 162impl SearchState {
 163    fn new(
 164        kind: SearchKind,
 165        query: String,
 166        previous_matches: HashMap<Range<editor::Anchor>, Arc<OnceLock<SearchData>>>,
 167        new_matches: Vec<Range<editor::Anchor>>,
 168        theme: Arc<SyntaxTheme>,
 169        window: &mut Window,
 170        cx: &mut Context<OutlinePanel>,
 171    ) -> Self {
 172        let (highlight_search_match_tx, highlight_search_match_rx) = channel::unbounded();
 173        let (notify_tx, notify_rx) = channel::unbounded::<()>();
 174        Self {
 175            kind,
 176            query,
 177            matches: new_matches
 178                .into_iter()
 179                .map(|range| {
 180                    let search_data = previous_matches
 181                        .get(&range)
 182                        .map(Arc::clone)
 183                        .unwrap_or_default();
 184                    (range, search_data)
 185                })
 186                .collect(),
 187            highlight_search_match_tx,
 188            _search_match_highlighter: cx.background_spawn(async move {
 189                while let Ok(highlight_arguments) = highlight_search_match_rx.recv().await {
 190                    let needs_init = highlight_arguments.search_data.get().is_none();
 191                    let search_data = highlight_arguments.search_data.get_or_init(|| {
 192                        SearchData::new(
 193                            &highlight_arguments.match_range,
 194                            &highlight_arguments.multi_buffer_snapshot,
 195                        )
 196                    });
 197                    if needs_init {
 198                        notify_tx.try_send(()).ok();
 199                    }
 200
 201                    let highlight_data = &search_data.highlights_data;
 202                    if highlight_data.get().is_some() {
 203                        continue;
 204                    }
 205                    let mut left_whitespaces_count = 0;
 206                    let mut non_whitespace_symbol_occurred = false;
 207                    let context_offset_range = search_data
 208                        .context_range
 209                        .to_offset(&highlight_arguments.multi_buffer_snapshot);
 210                    let mut offset = context_offset_range.start;
 211                    let mut context_text = String::new();
 212                    let mut highlight_ranges = Vec::new();
 213                    for mut chunk in highlight_arguments
 214                        .multi_buffer_snapshot
 215                        .chunks(context_offset_range.start..context_offset_range.end, true)
 216                    {
 217                        if !non_whitespace_symbol_occurred {
 218                            for c in chunk.text.chars() {
 219                                if c.is_whitespace() {
 220                                    left_whitespaces_count += c.len_utf8();
 221                                } else {
 222                                    non_whitespace_symbol_occurred = true;
 223                                    break;
 224                                }
 225                            }
 226                        }
 227
 228                        if chunk.text.len() > context_offset_range.end - offset {
 229                            chunk.text = &chunk.text[0..(context_offset_range.end - offset)];
 230                            offset = context_offset_range.end;
 231                        } else {
 232                            offset += chunk.text.len();
 233                        }
 234                        let style = chunk
 235                            .syntax_highlight_id
 236                            .and_then(|highlight| highlight.style(&theme));
 237                        if let Some(style) = style {
 238                            let start = context_text.len();
 239                            let end = start + chunk.text.len();
 240                            highlight_ranges.push((start..end, style));
 241                        }
 242                        context_text.push_str(chunk.text);
 243                        if offset >= context_offset_range.end {
 244                            break;
 245                        }
 246                    }
 247
 248                    highlight_ranges.iter_mut().for_each(|(range, _)| {
 249                        range.start = range.start.saturating_sub(left_whitespaces_count);
 250                        range.end = range.end.saturating_sub(left_whitespaces_count);
 251                    });
 252                    if highlight_data.set(highlight_ranges).ok().is_some() {
 253                        notify_tx.try_send(()).ok();
 254                    }
 255
 256                    let trimmed_text = context_text[left_whitespaces_count..].to_owned();
 257                    debug_assert_eq!(
 258                        trimmed_text, search_data.context_text,
 259                        "Highlighted text that does not match the buffer text"
 260                    );
 261                }
 262            }),
 263            _search_match_notify: cx.spawn_in(window, async move |outline_panel, cx| {
 264                loop {
 265                    match notify_rx.recv().await {
 266                        Ok(()) => {}
 267                        Err(_) => break,
 268                    };
 269                    while let Ok(()) = notify_rx.try_recv() {
 270                        //
 271                    }
 272                    let update_result = outline_panel.update(cx, |_, cx| {
 273                        cx.notify();
 274                    });
 275                    if update_result.is_err() {
 276                        break;
 277                    }
 278                }
 279            }),
 280        }
 281    }
 282}
 283
 284#[derive(Debug)]
 285enum SelectedEntry {
 286    Invalidated(Option<PanelEntry>),
 287    Valid(PanelEntry, usize),
 288    None,
 289}
 290
 291impl SelectedEntry {
 292    fn invalidate(&mut self) {
 293        match std::mem::replace(self, SelectedEntry::None) {
 294            Self::Valid(entry, _) => *self = Self::Invalidated(Some(entry)),
 295            Self::None => *self = Self::Invalidated(None),
 296            other => *self = other,
 297        }
 298    }
 299
 300    fn is_invalidated(&self) -> bool {
 301        matches!(self, Self::Invalidated(_))
 302    }
 303}
 304
 305#[derive(Debug, Clone, Copy, Default)]
 306struct FsChildren {
 307    files: usize,
 308    dirs: usize,
 309}
 310
 311impl FsChildren {
 312    fn may_be_fold_part(&self) -> bool {
 313        self.dirs == 0 || (self.dirs == 1 && self.files == 0)
 314    }
 315}
 316
 317#[derive(Clone, Debug)]
 318struct CachedEntry {
 319    depth: usize,
 320    string_match: Option<StringMatch>,
 321    entry: PanelEntry,
 322}
 323
 324#[derive(Clone, Debug, PartialEq, Eq, Hash)]
 325enum CollapsedEntry {
 326    Dir(WorktreeId, ProjectEntryId),
 327    File(WorktreeId, BufferId),
 328    ExternalFile(BufferId),
 329    Excerpt(BufferId, ExcerptId),
 330    Outline(BufferId, ExcerptId, Range<Anchor>),
 331}
 332
 333#[derive(Debug)]
 334struct Excerpt {
 335    range: ExcerptRange<language::Anchor>,
 336    outlines: ExcerptOutlines,
 337}
 338
 339impl Excerpt {
 340    fn invalidate_outlines(&mut self) {
 341        if let ExcerptOutlines::Outlines(valid_outlines) = &mut self.outlines {
 342            self.outlines = ExcerptOutlines::Invalidated(std::mem::take(valid_outlines));
 343        }
 344    }
 345
 346    fn iter_outlines(&self) -> impl Iterator<Item = &Outline> {
 347        match &self.outlines {
 348            ExcerptOutlines::Outlines(outlines) => outlines.iter(),
 349            ExcerptOutlines::Invalidated(outlines) => outlines.iter(),
 350            ExcerptOutlines::NotFetched => [].iter(),
 351        }
 352    }
 353
 354    fn should_fetch_outlines(&self) -> bool {
 355        match &self.outlines {
 356            ExcerptOutlines::Outlines(_) => false,
 357            ExcerptOutlines::Invalidated(_) => true,
 358            ExcerptOutlines::NotFetched => true,
 359        }
 360    }
 361}
 362
 363#[derive(Debug)]
 364enum ExcerptOutlines {
 365    Outlines(Vec<Outline>),
 366    Invalidated(Vec<Outline>),
 367    NotFetched,
 368}
 369
 370#[derive(Clone, Debug, PartialEq, Eq)]
 371struct FoldedDirsEntry {
 372    worktree_id: WorktreeId,
 373    entries: Vec<GitEntry>,
 374}
 375
 376// TODO: collapse the inner enums into panel entry
 377#[derive(Clone, Debug)]
 378enum PanelEntry {
 379    Fs(FsEntry),
 380    FoldedDirs(FoldedDirsEntry),
 381    Outline(OutlineEntry),
 382    Search(SearchEntry),
 383}
 384
 385#[derive(Clone, Debug)]
 386struct SearchEntry {
 387    match_range: Range<editor::Anchor>,
 388    kind: SearchKind,
 389    render_data: Arc<OnceLock<SearchData>>,
 390}
 391
 392#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
 393enum SearchKind {
 394    Project,
 395    Buffer,
 396}
 397
 398#[derive(Clone, Debug)]
 399struct SearchData {
 400    context_range: Range<editor::Anchor>,
 401    context_text: String,
 402    truncated_left: bool,
 403    truncated_right: bool,
 404    search_match_indices: Vec<Range<usize>>,
 405    highlights_data: HighlightStyleData,
 406}
 407
 408impl PartialEq for PanelEntry {
 409    fn eq(&self, other: &Self) -> bool {
 410        match (self, other) {
 411            (Self::Fs(a), Self::Fs(b)) => a == b,
 412            (
 413                Self::FoldedDirs(FoldedDirsEntry {
 414                    worktree_id: worktree_id_a,
 415                    entries: entries_a,
 416                }),
 417                Self::FoldedDirs(FoldedDirsEntry {
 418                    worktree_id: worktree_id_b,
 419                    entries: entries_b,
 420                }),
 421            ) => worktree_id_a == worktree_id_b && entries_a == entries_b,
 422            (Self::Outline(a), Self::Outline(b)) => a == b,
 423            (
 424                Self::Search(SearchEntry {
 425                    match_range: match_range_a,
 426                    kind: kind_a,
 427                    ..
 428                }),
 429                Self::Search(SearchEntry {
 430                    match_range: match_range_b,
 431                    kind: kind_b,
 432                    ..
 433                }),
 434            ) => match_range_a == match_range_b && kind_a == kind_b,
 435            _ => false,
 436        }
 437    }
 438}
 439
 440impl Eq for PanelEntry {}
 441
 442const SEARCH_MATCH_CONTEXT_SIZE: u32 = 40;
 443const TRUNCATED_CONTEXT_MARK: &str = "";
 444
 445impl SearchData {
 446    fn new(
 447        match_range: &Range<editor::Anchor>,
 448        multi_buffer_snapshot: &MultiBufferSnapshot,
 449    ) -> Self {
 450        let match_point_range = match_range.to_point(multi_buffer_snapshot);
 451        let context_left_border = multi_buffer_snapshot.clip_point(
 452            language::Point::new(
 453                match_point_range.start.row,
 454                match_point_range
 455                    .start
 456                    .column
 457                    .saturating_sub(SEARCH_MATCH_CONTEXT_SIZE),
 458            ),
 459            Bias::Left,
 460        );
 461        let context_right_border = multi_buffer_snapshot.clip_point(
 462            language::Point::new(
 463                match_point_range.end.row,
 464                match_point_range.end.column + SEARCH_MATCH_CONTEXT_SIZE,
 465            ),
 466            Bias::Right,
 467        );
 468
 469        let context_anchor_range =
 470            (context_left_border..context_right_border).to_anchors(multi_buffer_snapshot);
 471        let context_offset_range = context_anchor_range.to_offset(multi_buffer_snapshot);
 472        let match_offset_range = match_range.to_offset(multi_buffer_snapshot);
 473
 474        let mut search_match_indices = vec![
 475            match_offset_range.start - context_offset_range.start
 476                ..match_offset_range.end - context_offset_range.start,
 477        ];
 478
 479        let entire_context_text = multi_buffer_snapshot
 480            .text_for_range(context_offset_range.clone())
 481            .collect::<String>();
 482        let left_whitespaces_offset = entire_context_text
 483            .chars()
 484            .take_while(|c| c.is_whitespace())
 485            .map(|c| c.len_utf8())
 486            .sum::<usize>();
 487
 488        let mut extended_context_left_border = context_left_border;
 489        extended_context_left_border.column = extended_context_left_border.column.saturating_sub(1);
 490        let extended_context_left_border =
 491            multi_buffer_snapshot.clip_point(extended_context_left_border, Bias::Left);
 492        let mut extended_context_right_border = context_right_border;
 493        extended_context_right_border.column += 1;
 494        let extended_context_right_border =
 495            multi_buffer_snapshot.clip_point(extended_context_right_border, Bias::Right);
 496
 497        let truncated_left = left_whitespaces_offset == 0
 498            && extended_context_left_border < context_left_border
 499            && multi_buffer_snapshot
 500                .chars_at(extended_context_left_border)
 501                .last()
 502                .is_some_and(|c| !c.is_whitespace());
 503        let truncated_right = entire_context_text
 504            .chars()
 505            .last()
 506            .is_none_or(|c| !c.is_whitespace())
 507            && extended_context_right_border > context_right_border
 508            && multi_buffer_snapshot
 509                .chars_at(extended_context_right_border)
 510                .next()
 511                .is_some_and(|c| !c.is_whitespace());
 512        search_match_indices.iter_mut().for_each(|range| {
 513            range.start = range.start.saturating_sub(left_whitespaces_offset);
 514            range.end = range.end.saturating_sub(left_whitespaces_offset);
 515        });
 516
 517        let trimmed_row_offset_range =
 518            context_offset_range.start + left_whitespaces_offset..context_offset_range.end;
 519        let trimmed_text = entire_context_text[left_whitespaces_offset..].to_owned();
 520        Self {
 521            highlights_data: Arc::default(),
 522            search_match_indices,
 523            context_range: trimmed_row_offset_range.to_anchors(multi_buffer_snapshot),
 524            context_text: trimmed_text,
 525            truncated_left,
 526            truncated_right,
 527        }
 528    }
 529}
 530
 531#[derive(Clone, Debug, PartialEq, Eq, Hash)]
 532struct OutlineEntryExcerpt {
 533    id: ExcerptId,
 534    buffer_id: BufferId,
 535    range: ExcerptRange<language::Anchor>,
 536}
 537
 538#[derive(Clone, Debug, Eq)]
 539struct OutlineEntryOutline {
 540    buffer_id: BufferId,
 541    excerpt_id: ExcerptId,
 542    outline: Outline,
 543}
 544
 545impl PartialEq for OutlineEntryOutline {
 546    fn eq(&self, other: &Self) -> bool {
 547        self.buffer_id == other.buffer_id
 548            && self.excerpt_id == other.excerpt_id
 549            && self.outline.depth == other.outline.depth
 550            && self.outline.range == other.outline.range
 551            && self.outline.text == other.outline.text
 552    }
 553}
 554
 555impl Hash for OutlineEntryOutline {
 556    fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
 557        (
 558            self.buffer_id,
 559            self.excerpt_id,
 560            self.outline.depth,
 561            &self.outline.range,
 562            &self.outline.text,
 563        )
 564            .hash(state);
 565    }
 566}
 567
 568#[derive(Clone, Debug, PartialEq, Eq)]
 569enum OutlineEntry {
 570    Excerpt(OutlineEntryExcerpt),
 571    Outline(OutlineEntryOutline),
 572}
 573
 574impl OutlineEntry {
 575    fn ids(&self) -> (BufferId, ExcerptId) {
 576        match self {
 577            OutlineEntry::Excerpt(excerpt) => (excerpt.buffer_id, excerpt.id),
 578            OutlineEntry::Outline(outline) => (outline.buffer_id, outline.excerpt_id),
 579        }
 580    }
 581}
 582
 583#[derive(Debug, Clone, Eq)]
 584struct FsEntryFile {
 585    worktree_id: WorktreeId,
 586    entry: GitEntry,
 587    buffer_id: BufferId,
 588    excerpts: Vec<ExcerptId>,
 589}
 590
 591impl PartialEq for FsEntryFile {
 592    fn eq(&self, other: &Self) -> bool {
 593        self.worktree_id == other.worktree_id
 594            && self.entry.id == other.entry.id
 595            && self.buffer_id == other.buffer_id
 596    }
 597}
 598
 599impl Hash for FsEntryFile {
 600    fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
 601        (self.buffer_id, self.entry.id, self.worktree_id).hash(state);
 602    }
 603}
 604
 605#[derive(Debug, Clone, Eq)]
 606struct FsEntryDirectory {
 607    worktree_id: WorktreeId,
 608    entry: GitEntry,
 609}
 610
 611impl PartialEq for FsEntryDirectory {
 612    fn eq(&self, other: &Self) -> bool {
 613        self.worktree_id == other.worktree_id && self.entry.id == other.entry.id
 614    }
 615}
 616
 617impl Hash for FsEntryDirectory {
 618    fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
 619        (self.worktree_id, self.entry.id).hash(state);
 620    }
 621}
 622
 623#[derive(Debug, Clone, Eq)]
 624struct FsEntryExternalFile {
 625    buffer_id: BufferId,
 626    excerpts: Vec<ExcerptId>,
 627}
 628
 629impl PartialEq for FsEntryExternalFile {
 630    fn eq(&self, other: &Self) -> bool {
 631        self.buffer_id == other.buffer_id
 632    }
 633}
 634
 635impl Hash for FsEntryExternalFile {
 636    fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
 637        self.buffer_id.hash(state);
 638    }
 639}
 640
 641#[derive(Clone, Debug, Eq, PartialEq)]
 642enum FsEntry {
 643    ExternalFile(FsEntryExternalFile),
 644    Directory(FsEntryDirectory),
 645    File(FsEntryFile),
 646}
 647
 648struct ActiveItem {
 649    item_handle: Box<dyn WeakItemHandle>,
 650    active_editor: WeakEntity<Editor>,
 651    _buffer_search_subscription: Subscription,
 652    _editor_subscription: Subscription,
 653}
 654
 655#[derive(Debug)]
 656pub enum Event {
 657    Focus,
 658}
 659
 660#[derive(Serialize, Deserialize)]
 661struct SerializedOutlinePanel {
 662    width: Option<Pixels>,
 663    active: Option<bool>,
 664}
 665
 666pub fn init(cx: &mut App) {
 667    cx.observe_new(|workspace: &mut Workspace, _, _| {
 668        workspace.register_action(|workspace, _: &ToggleFocus, window, cx| {
 669            workspace.toggle_panel_focus::<OutlinePanel>(window, cx);
 670        });
 671    })
 672    .detach();
 673}
 674
 675impl OutlinePanel {
 676    pub async fn load(
 677        workspace: WeakEntity<Workspace>,
 678        mut cx: AsyncWindowContext,
 679    ) -> anyhow::Result<Entity<Self>> {
 680        let serialized_panel = match workspace
 681            .read_with(&cx, |workspace, _| {
 682                OutlinePanel::serialization_key(workspace)
 683            })
 684            .ok()
 685            .flatten()
 686        {
 687            Some(serialization_key) => cx
 688                .background_spawn(async move { KEY_VALUE_STORE.read_kvp(&serialization_key) })
 689                .await
 690                .context("loading outline panel")
 691                .log_err()
 692                .flatten()
 693                .map(|panel| serde_json::from_str::<SerializedOutlinePanel>(&panel))
 694                .transpose()
 695                .log_err()
 696                .flatten(),
 697            None => None,
 698        };
 699
 700        workspace.update_in(&mut cx, |workspace, window, cx| {
 701            let panel = Self::new(workspace, window, cx);
 702            if let Some(serialized_panel) = serialized_panel {
 703                panel.update(cx, |panel, cx| {
 704                    panel.width = serialized_panel.width.map(|px| px.round());
 705                    panel.active = serialized_panel.active.unwrap_or(false);
 706                    cx.notify();
 707                });
 708            }
 709            panel
 710        })
 711    }
 712
 713    fn new(
 714        workspace: &mut Workspace,
 715        window: &mut Window,
 716        cx: &mut Context<Workspace>,
 717    ) -> Entity<Self> {
 718        let project = workspace.project().clone();
 719        let workspace_handle = cx.entity().downgrade();
 720
 721        cx.new(|cx| {
 722            let filter_editor = cx.new(|cx| {
 723                let mut editor = Editor::single_line(window, cx);
 724                editor.set_placeholder_text("Search buffer symbols…", window, cx);
 725                editor
 726            });
 727            let filter_update_subscription = cx.subscribe_in(
 728                &filter_editor,
 729                window,
 730                |outline_panel: &mut Self, _, event, window, cx| {
 731                    if let editor::EditorEvent::BufferEdited = event {
 732                        outline_panel.update_cached_entries(Some(UPDATE_DEBOUNCE), window, cx);
 733                    }
 734                },
 735            );
 736
 737            let focus_handle = cx.focus_handle();
 738            let focus_subscription = cx.on_focus(&focus_handle, window, Self::focus_in);
 739            let workspace_subscription = cx.subscribe_in(
 740                &workspace
 741                    .weak_handle()
 742                    .upgrade()
 743                    .expect("have a &mut Workspace"),
 744                window,
 745                move |outline_panel, workspace, event, window, cx| {
 746                    if let workspace::Event::ActiveItemChanged = event {
 747                        if let Some((new_active_item, new_active_editor)) =
 748                            workspace_active_editor(workspace.read(cx), cx)
 749                        {
 750                            if outline_panel.should_replace_active_item(new_active_item.as_ref()) {
 751                                outline_panel.replace_active_editor(
 752                                    new_active_item,
 753                                    new_active_editor,
 754                                    window,
 755                                    cx,
 756                                );
 757                            }
 758                        } else {
 759                            outline_panel.clear_previous(window, cx);
 760                            cx.notify();
 761                        }
 762                    }
 763                },
 764            );
 765
 766            let icons_subscription = cx.observe_global::<FileIcons>(|_, cx| {
 767                cx.notify();
 768            });
 769
 770            let mut outline_panel_settings = *OutlinePanelSettings::get_global(cx);
 771            let mut current_theme = ThemeSettings::get_global(cx).clone();
 772            let settings_subscription =
 773                cx.observe_global_in::<SettingsStore>(window, move |outline_panel, window, cx| {
 774                    let new_settings = OutlinePanelSettings::get_global(cx);
 775                    let new_theme = ThemeSettings::get_global(cx);
 776                    if &current_theme != new_theme {
 777                        outline_panel_settings = *new_settings;
 778                        current_theme = new_theme.clone();
 779                        for excerpts in outline_panel.excerpts.values_mut() {
 780                            for excerpt in excerpts.values_mut() {
 781                                excerpt.invalidate_outlines();
 782                            }
 783                        }
 784                        let update_cached_items = outline_panel.update_non_fs_items(window, cx);
 785                        if update_cached_items {
 786                            outline_panel.update_cached_entries(Some(UPDATE_DEBOUNCE), window, cx);
 787                        }
 788                    } else if &outline_panel_settings != new_settings {
 789                        let old_expansion_depth = outline_panel_settings.expand_outlines_with_depth;
 790                        outline_panel_settings = *new_settings;
 791
 792                        if old_expansion_depth != new_settings.expand_outlines_with_depth {
 793                            let old_collapsed_entries = outline_panel.collapsed_entries.clone();
 794                            outline_panel
 795                                .collapsed_entries
 796                                .retain(|entry| !matches!(entry, CollapsedEntry::Outline(..)));
 797
 798                            let new_depth = new_settings.expand_outlines_with_depth;
 799
 800                            for (buffer_id, excerpts) in &outline_panel.excerpts {
 801                                for (excerpt_id, excerpt) in excerpts {
 802                                    if let ExcerptOutlines::Outlines(outlines) = &excerpt.outlines {
 803                                        for outline in outlines {
 804                                            if outline_panel
 805                                                .outline_children_cache
 806                                                .get(buffer_id)
 807                                                .and_then(|children_map| {
 808                                                    let key =
 809                                                        (outline.range.clone(), outline.depth);
 810                                                    children_map.get(&key)
 811                                                })
 812                                                .copied()
 813                                                .unwrap_or(false)
 814                                                && (new_depth == 0 || outline.depth >= new_depth)
 815                                            {
 816                                                outline_panel.collapsed_entries.insert(
 817                                                    CollapsedEntry::Outline(
 818                                                        *buffer_id,
 819                                                        *excerpt_id,
 820                                                        outline.range.clone(),
 821                                                    ),
 822                                                );
 823                                            }
 824                                        }
 825                                    }
 826                                }
 827                            }
 828
 829                            if old_collapsed_entries != outline_panel.collapsed_entries {
 830                                outline_panel.update_cached_entries(
 831                                    Some(UPDATE_DEBOUNCE),
 832                                    window,
 833                                    cx,
 834                                );
 835                            }
 836                        } else {
 837                            cx.notify();
 838                        }
 839                    }
 840                });
 841
 842            let scroll_handle = UniformListScrollHandle::new();
 843
 844            let mut outline_panel = Self {
 845                mode: ItemsDisplayMode::Outline,
 846                active: false,
 847                pinned: false,
 848                workspace: workspace_handle,
 849                project,
 850                fs: workspace.app_state().fs.clone(),
 851                max_width_item_index: None,
 852                scroll_handle,
 853                rendered_entries_len: 0,
 854                focus_handle,
 855                filter_editor,
 856                fs_entries: Vec::new(),
 857                fs_entries_depth: HashMap::default(),
 858                fs_children_count: HashMap::default(),
 859                collapsed_entries: HashSet::default(),
 860                unfolded_dirs: HashMap::default(),
 861                selected_entry: SelectedEntry::None,
 862                context_menu: None,
 863                width: None,
 864                active_item: None,
 865                pending_serialization: Task::ready(None),
 866                new_entries_for_fs_update: HashSet::default(),
 867                preserve_selection_on_buffer_fold_toggles: HashSet::default(),
 868                pending_default_expansion_depth: None,
 869                fs_entries_update_task: Task::ready(()),
 870                cached_entries_update_task: Task::ready(()),
 871                reveal_selection_task: Task::ready(Ok(())),
 872                outline_fetch_tasks: HashMap::default(),
 873                excerpts: HashMap::default(),
 874                cached_entries: Vec::new(),
 875                _subscriptions: vec![
 876                    settings_subscription,
 877                    icons_subscription,
 878                    focus_subscription,
 879                    workspace_subscription,
 880                    filter_update_subscription,
 881                ],
 882                outline_children_cache: HashMap::default(),
 883            };
 884            if let Some((item, editor)) = workspace_active_editor(workspace, cx) {
 885                outline_panel.replace_active_editor(item, editor, window, cx);
 886            }
 887            outline_panel
 888        })
 889    }
 890
 891    fn serialization_key(workspace: &Workspace) -> Option<String> {
 892        workspace
 893            .database_id()
 894            .map(|id| i64::from(id).to_string())
 895            .or(workspace.session_id())
 896            .map(|id| format!("{}-{:?}", OUTLINE_PANEL_KEY, id))
 897    }
 898
 899    fn serialize(&mut self, cx: &mut Context<Self>) {
 900        let Some(serialization_key) = self
 901            .workspace
 902            .read_with(cx, |workspace, _| {
 903                OutlinePanel::serialization_key(workspace)
 904            })
 905            .ok()
 906            .flatten()
 907        else {
 908            return;
 909        };
 910        let width = self.width;
 911        let active = Some(self.active);
 912        self.pending_serialization = cx.background_spawn(
 913            async move {
 914                KEY_VALUE_STORE
 915                    .write_kvp(
 916                        serialization_key,
 917                        serde_json::to_string(&SerializedOutlinePanel { width, active })?,
 918                    )
 919                    .await?;
 920                anyhow::Ok(())
 921            }
 922            .log_err(),
 923        );
 924    }
 925
 926    fn dispatch_context(&self, window: &mut Window, cx: &mut Context<Self>) -> KeyContext {
 927        let mut dispatch_context = KeyContext::new_with_defaults();
 928        dispatch_context.add("OutlinePanel");
 929        dispatch_context.add("menu");
 930        let identifier = if self.filter_editor.focus_handle(cx).is_focused(window) {
 931            "editing"
 932        } else {
 933            "not_editing"
 934        };
 935        dispatch_context.add(identifier);
 936        dispatch_context
 937    }
 938
 939    fn unfold_directory(
 940        &mut self,
 941        _: &UnfoldDirectory,
 942        window: &mut Window,
 943        cx: &mut Context<Self>,
 944    ) {
 945        if let Some(PanelEntry::FoldedDirs(FoldedDirsEntry {
 946            worktree_id,
 947            entries,
 948            ..
 949        })) = self.selected_entry().cloned()
 950        {
 951            self.unfolded_dirs
 952                .entry(worktree_id)
 953                .or_default()
 954                .extend(entries.iter().map(|entry| entry.id));
 955            self.update_cached_entries(None, window, cx);
 956        }
 957    }
 958
 959    fn fold_directory(&mut self, _: &FoldDirectory, window: &mut Window, cx: &mut Context<Self>) {
 960        let (worktree_id, entry) = match self.selected_entry().cloned() {
 961            Some(PanelEntry::Fs(FsEntry::Directory(directory))) => {
 962                (directory.worktree_id, Some(directory.entry))
 963            }
 964            Some(PanelEntry::FoldedDirs(folded_dirs)) => {
 965                (folded_dirs.worktree_id, folded_dirs.entries.last().cloned())
 966            }
 967            _ => return,
 968        };
 969        let Some(entry) = entry else {
 970            return;
 971        };
 972        let unfolded_dirs = self.unfolded_dirs.get_mut(&worktree_id);
 973        let worktree = self
 974            .project
 975            .read(cx)
 976            .worktree_for_id(worktree_id, cx)
 977            .map(|w| w.read(cx).snapshot());
 978        let Some((_, unfolded_dirs)) = worktree.zip(unfolded_dirs) else {
 979            return;
 980        };
 981
 982        unfolded_dirs.remove(&entry.id);
 983        self.update_cached_entries(None, window, cx);
 984    }
 985
 986    fn open_selected_entry(
 987        &mut self,
 988        _: &OpenSelectedEntry,
 989        window: &mut Window,
 990        cx: &mut Context<Self>,
 991    ) {
 992        if self.filter_editor.focus_handle(cx).is_focused(window) {
 993            cx.propagate()
 994        } else if let Some(selected_entry) = self.selected_entry().cloned() {
 995            self.scroll_editor_to_entry(&selected_entry, true, true, window, cx);
 996        }
 997    }
 998
 999    fn cancel(&mut self, _: &Cancel, window: &mut Window, cx: &mut Context<Self>) {
1000        if self.filter_editor.focus_handle(cx).is_focused(window) {
1001            self.focus_handle.focus(window);
1002        } else {
1003            self.filter_editor.focus_handle(cx).focus(window);
1004        }
1005
1006        if self.context_menu.is_some() {
1007            self.context_menu.take();
1008            cx.notify();
1009        }
1010    }
1011
1012    fn open_excerpts(
1013        &mut self,
1014        action: &editor::actions::OpenExcerpts,
1015        window: &mut Window,
1016        cx: &mut Context<Self>,
1017    ) {
1018        if self.filter_editor.focus_handle(cx).is_focused(window) {
1019            cx.propagate()
1020        } else if let Some((active_editor, selected_entry)) =
1021            self.active_editor().zip(self.selected_entry().cloned())
1022        {
1023            self.scroll_editor_to_entry(&selected_entry, true, true, window, cx);
1024            active_editor.update(cx, |editor, cx| editor.open_excerpts(action, window, cx));
1025        }
1026    }
1027
1028    fn open_excerpts_split(
1029        &mut self,
1030        action: &editor::actions::OpenExcerptsSplit,
1031        window: &mut Window,
1032        cx: &mut Context<Self>,
1033    ) {
1034        if self.filter_editor.focus_handle(cx).is_focused(window) {
1035            cx.propagate()
1036        } else if let Some((active_editor, selected_entry)) =
1037            self.active_editor().zip(self.selected_entry().cloned())
1038        {
1039            self.scroll_editor_to_entry(&selected_entry, true, true, window, cx);
1040            active_editor.update(cx, |editor, cx| {
1041                editor.open_excerpts_in_split(action, window, cx)
1042            });
1043        }
1044    }
1045
1046    fn scroll_editor_to_entry(
1047        &mut self,
1048        entry: &PanelEntry,
1049        prefer_selection_change: bool,
1050        prefer_focus_change: bool,
1051        window: &mut Window,
1052        cx: &mut Context<OutlinePanel>,
1053    ) {
1054        let Some(active_editor) = self.active_editor() else {
1055            return;
1056        };
1057        let active_multi_buffer = active_editor.read(cx).buffer().clone();
1058        let multi_buffer_snapshot = active_multi_buffer.read(cx).snapshot(cx);
1059        let mut change_selection = prefer_selection_change;
1060        let mut change_focus = prefer_focus_change;
1061        let mut scroll_to_buffer = None;
1062        let scroll_target = match entry {
1063            PanelEntry::FoldedDirs(..) | PanelEntry::Fs(FsEntry::Directory(..)) => {
1064                change_focus = false;
1065                None
1066            }
1067            PanelEntry::Fs(FsEntry::ExternalFile(file)) => {
1068                change_selection = false;
1069                scroll_to_buffer = Some(file.buffer_id);
1070                multi_buffer_snapshot.excerpts().find_map(
1071                    |(excerpt_id, buffer_snapshot, excerpt_range)| {
1072                        if buffer_snapshot.remote_id() == file.buffer_id {
1073                            multi_buffer_snapshot
1074                                .anchor_in_excerpt(excerpt_id, excerpt_range.context.start)
1075                        } else {
1076                            None
1077                        }
1078                    },
1079                )
1080            }
1081
1082            PanelEntry::Fs(FsEntry::File(file)) => {
1083                change_selection = false;
1084                scroll_to_buffer = Some(file.buffer_id);
1085                self.project
1086                    .update(cx, |project, cx| {
1087                        project
1088                            .path_for_entry(file.entry.id, cx)
1089                            .and_then(|path| project.get_open_buffer(&path, cx))
1090                    })
1091                    .map(|buffer| {
1092                        active_multi_buffer
1093                            .read(cx)
1094                            .excerpts_for_buffer(buffer.read(cx).remote_id(), cx)
1095                    })
1096                    .and_then(|excerpts| {
1097                        let (excerpt_id, excerpt_range) = excerpts.first()?;
1098                        multi_buffer_snapshot
1099                            .anchor_in_excerpt(*excerpt_id, excerpt_range.context.start)
1100                    })
1101            }
1102            PanelEntry::Outline(OutlineEntry::Outline(outline)) => multi_buffer_snapshot
1103                .anchor_in_excerpt(outline.excerpt_id, outline.outline.range.start)
1104                .or_else(|| {
1105                    multi_buffer_snapshot
1106                        .anchor_in_excerpt(outline.excerpt_id, outline.outline.range.end)
1107                }),
1108            PanelEntry::Outline(OutlineEntry::Excerpt(excerpt)) => {
1109                change_selection = false;
1110                change_focus = false;
1111                multi_buffer_snapshot.anchor_in_excerpt(excerpt.id, excerpt.range.context.start)
1112            }
1113            PanelEntry::Search(search_entry) => Some(search_entry.match_range.start),
1114        };
1115
1116        if let Some(anchor) = scroll_target {
1117            let activate = self
1118                .workspace
1119                .update(cx, |workspace, cx| match self.active_item() {
1120                    Some(active_item) => workspace.activate_item(
1121                        active_item.as_ref(),
1122                        true,
1123                        change_focus,
1124                        window,
1125                        cx,
1126                    ),
1127                    None => workspace.activate_item(&active_editor, true, change_focus, window, cx),
1128                });
1129
1130            if activate.is_ok() {
1131                self.select_entry(entry.clone(), true, window, cx);
1132                if change_selection {
1133                    active_editor.update(cx, |editor, cx| {
1134                        editor.change_selections(
1135                            SelectionEffects::scroll(Autoscroll::center()),
1136                            window,
1137                            cx,
1138                            |s| s.select_ranges(Some(anchor..anchor)),
1139                        );
1140                    });
1141                } else {
1142                    let mut offset = Point::default();
1143                    if let Some(buffer_id) = scroll_to_buffer
1144                        && multi_buffer_snapshot.as_singleton().is_none()
1145                        && !active_editor.read(cx).is_buffer_folded(buffer_id, cx)
1146                    {
1147                        offset.y = -(active_editor.read(cx).file_header_size() as f64);
1148                    }
1149
1150                    active_editor.update(cx, |editor, cx| {
1151                        editor.set_scroll_anchor(ScrollAnchor { offset, anchor }, window, cx);
1152                    });
1153                }
1154
1155                if change_focus {
1156                    active_editor.focus_handle(cx).focus(window);
1157                } else {
1158                    self.focus_handle.focus(window);
1159                }
1160            }
1161        }
1162    }
1163
1164    fn scroll_up(&mut self, _: &ScrollUp, window: &mut Window, cx: &mut Context<Self>) {
1165        for _ in 0..self.rendered_entries_len / 2 {
1166            window.dispatch_action(SelectPrevious.boxed_clone(), cx);
1167        }
1168    }
1169
1170    fn scroll_down(&mut self, _: &ScrollDown, window: &mut Window, cx: &mut Context<Self>) {
1171        for _ in 0..self.rendered_entries_len / 2 {
1172            window.dispatch_action(SelectNext.boxed_clone(), cx);
1173        }
1174    }
1175
1176    fn scroll_cursor_center(
1177        &mut self,
1178        _: &ScrollCursorCenter,
1179        _: &mut Window,
1180        cx: &mut Context<Self>,
1181    ) {
1182        if let Some(selected_entry) = self.selected_entry() {
1183            let index = self
1184                .cached_entries
1185                .iter()
1186                .position(|cached_entry| &cached_entry.entry == selected_entry);
1187            if let Some(index) = index {
1188                self.scroll_handle
1189                    .scroll_to_item_strict(index, ScrollStrategy::Center);
1190                cx.notify();
1191            }
1192        }
1193    }
1194
1195    fn scroll_cursor_top(&mut self, _: &ScrollCursorTop, _: &mut Window, cx: &mut Context<Self>) {
1196        if let Some(selected_entry) = self.selected_entry() {
1197            let index = self
1198                .cached_entries
1199                .iter()
1200                .position(|cached_entry| &cached_entry.entry == selected_entry);
1201            if let Some(index) = index {
1202                self.scroll_handle
1203                    .scroll_to_item_strict(index, ScrollStrategy::Top);
1204                cx.notify();
1205            }
1206        }
1207    }
1208
1209    fn scroll_cursor_bottom(
1210        &mut self,
1211        _: &ScrollCursorBottom,
1212        _: &mut Window,
1213        cx: &mut Context<Self>,
1214    ) {
1215        if let Some(selected_entry) = self.selected_entry() {
1216            let index = self
1217                .cached_entries
1218                .iter()
1219                .position(|cached_entry| &cached_entry.entry == selected_entry);
1220            if let Some(index) = index {
1221                self.scroll_handle
1222                    .scroll_to_item_strict(index, ScrollStrategy::Bottom);
1223                cx.notify();
1224            }
1225        }
1226    }
1227
1228    fn select_next(&mut self, _: &SelectNext, window: &mut Window, cx: &mut Context<Self>) {
1229        if let Some(entry_to_select) = self.selected_entry().and_then(|selected_entry| {
1230            self.cached_entries
1231                .iter()
1232                .map(|cached_entry| &cached_entry.entry)
1233                .skip_while(|entry| entry != &selected_entry)
1234                .nth(1)
1235                .cloned()
1236        }) {
1237            self.select_entry(entry_to_select, true, window, cx);
1238        } else {
1239            self.select_first(&SelectFirst {}, window, cx)
1240        }
1241        if let Some(selected_entry) = self.selected_entry().cloned() {
1242            self.scroll_editor_to_entry(&selected_entry, true, false, window, cx);
1243        }
1244    }
1245
1246    fn select_previous(&mut self, _: &SelectPrevious, window: &mut Window, cx: &mut Context<Self>) {
1247        if let Some(entry_to_select) = self.selected_entry().and_then(|selected_entry| {
1248            self.cached_entries
1249                .iter()
1250                .rev()
1251                .map(|cached_entry| &cached_entry.entry)
1252                .skip_while(|entry| entry != &selected_entry)
1253                .nth(1)
1254                .cloned()
1255        }) {
1256            self.select_entry(entry_to_select, true, window, cx);
1257        } else {
1258            self.select_last(&SelectLast, window, cx)
1259        }
1260        if let Some(selected_entry) = self.selected_entry().cloned() {
1261            self.scroll_editor_to_entry(&selected_entry, true, false, window, cx);
1262        }
1263    }
1264
1265    fn select_parent(&mut self, _: &SelectParent, window: &mut Window, cx: &mut Context<Self>) {
1266        if let Some(entry_to_select) = self.selected_entry().and_then(|selected_entry| {
1267            let mut previous_entries = self
1268                .cached_entries
1269                .iter()
1270                .rev()
1271                .map(|cached_entry| &cached_entry.entry)
1272                .skip_while(|entry| entry != &selected_entry)
1273                .skip(1);
1274            match &selected_entry {
1275                PanelEntry::Fs(fs_entry) => match fs_entry {
1276                    FsEntry::ExternalFile(..) => None,
1277                    FsEntry::File(FsEntryFile {
1278                        worktree_id, entry, ..
1279                    })
1280                    | FsEntry::Directory(FsEntryDirectory {
1281                        worktree_id, entry, ..
1282                    }) => entry.path.parent().and_then(|parent_path| {
1283                        previous_entries.find(|entry| match entry {
1284                            PanelEntry::Fs(FsEntry::Directory(directory)) => {
1285                                directory.worktree_id == *worktree_id
1286                                    && directory.entry.path.as_ref() == parent_path
1287                            }
1288                            PanelEntry::FoldedDirs(FoldedDirsEntry {
1289                                worktree_id: dirs_worktree_id,
1290                                entries: dirs,
1291                                ..
1292                            }) => {
1293                                dirs_worktree_id == worktree_id
1294                                    && dirs
1295                                        .last()
1296                                        .is_some_and(|dir| dir.path.as_ref() == parent_path)
1297                            }
1298                            _ => false,
1299                        })
1300                    }),
1301                },
1302                PanelEntry::FoldedDirs(folded_dirs) => folded_dirs
1303                    .entries
1304                    .first()
1305                    .and_then(|entry| entry.path.parent())
1306                    .and_then(|parent_path| {
1307                        previous_entries.find(|entry| {
1308                            if let PanelEntry::Fs(FsEntry::Directory(directory)) = entry {
1309                                directory.worktree_id == folded_dirs.worktree_id
1310                                    && directory.entry.path.as_ref() == parent_path
1311                            } else {
1312                                false
1313                            }
1314                        })
1315                    }),
1316                PanelEntry::Outline(OutlineEntry::Excerpt(excerpt)) => {
1317                    previous_entries.find(|entry| match entry {
1318                        PanelEntry::Fs(FsEntry::File(file)) => {
1319                            file.buffer_id == excerpt.buffer_id
1320                                && file.excerpts.contains(&excerpt.id)
1321                        }
1322                        PanelEntry::Fs(FsEntry::ExternalFile(external_file)) => {
1323                            external_file.buffer_id == excerpt.buffer_id
1324                                && external_file.excerpts.contains(&excerpt.id)
1325                        }
1326                        _ => false,
1327                    })
1328                }
1329                PanelEntry::Outline(OutlineEntry::Outline(outline)) => {
1330                    previous_entries.find(|entry| {
1331                        if let PanelEntry::Outline(OutlineEntry::Excerpt(excerpt)) = entry {
1332                            outline.buffer_id == excerpt.buffer_id
1333                                && outline.excerpt_id == excerpt.id
1334                        } else {
1335                            false
1336                        }
1337                    })
1338                }
1339                PanelEntry::Search(_) => {
1340                    previous_entries.find(|entry| !matches!(entry, PanelEntry::Search(_)))
1341                }
1342            }
1343        }) {
1344            self.select_entry(entry_to_select.clone(), true, window, cx);
1345        } else {
1346            self.select_first(&SelectFirst {}, window, cx);
1347        }
1348    }
1349
1350    fn select_first(&mut self, _: &SelectFirst, window: &mut Window, cx: &mut Context<Self>) {
1351        if let Some(first_entry) = self.cached_entries.first() {
1352            self.select_entry(first_entry.entry.clone(), true, window, cx);
1353        }
1354    }
1355
1356    fn select_last(&mut self, _: &SelectLast, window: &mut Window, cx: &mut Context<Self>) {
1357        if let Some(new_selection) = self
1358            .cached_entries
1359            .iter()
1360            .rev()
1361            .map(|cached_entry| &cached_entry.entry)
1362            .next()
1363        {
1364            self.select_entry(new_selection.clone(), true, window, cx);
1365        }
1366    }
1367
1368    fn autoscroll(&mut self, cx: &mut Context<Self>) {
1369        if let Some(selected_entry) = self.selected_entry() {
1370            let index = self
1371                .cached_entries
1372                .iter()
1373                .position(|cached_entry| &cached_entry.entry == selected_entry);
1374            if let Some(index) = index {
1375                self.scroll_handle
1376                    .scroll_to_item(index, ScrollStrategy::Center);
1377                cx.notify();
1378            }
1379        }
1380    }
1381
1382    fn focus_in(&mut self, window: &mut Window, cx: &mut Context<Self>) {
1383        if !self.focus_handle.contains_focused(window, cx) {
1384            cx.emit(Event::Focus);
1385        }
1386    }
1387
1388    fn deploy_context_menu(
1389        &mut self,
1390        position: Point<Pixels>,
1391        entry: PanelEntry,
1392        window: &mut Window,
1393        cx: &mut Context<Self>,
1394    ) {
1395        self.select_entry(entry.clone(), true, window, cx);
1396        let is_root = match &entry {
1397            PanelEntry::Fs(FsEntry::File(FsEntryFile {
1398                worktree_id, entry, ..
1399            }))
1400            | PanelEntry::Fs(FsEntry::Directory(FsEntryDirectory {
1401                worktree_id, entry, ..
1402            })) => self
1403                .project
1404                .read(cx)
1405                .worktree_for_id(*worktree_id, cx)
1406                .map(|worktree| {
1407                    worktree.read(cx).root_entry().map(|entry| entry.id) == Some(entry.id)
1408                })
1409                .unwrap_or(false),
1410            PanelEntry::FoldedDirs(FoldedDirsEntry {
1411                worktree_id,
1412                entries,
1413                ..
1414            }) => entries
1415                .first()
1416                .and_then(|entry| {
1417                    self.project
1418                        .read(cx)
1419                        .worktree_for_id(*worktree_id, cx)
1420                        .map(|worktree| {
1421                            worktree.read(cx).root_entry().map(|entry| entry.id) == Some(entry.id)
1422                        })
1423                })
1424                .unwrap_or(false),
1425            PanelEntry::Fs(FsEntry::ExternalFile(..)) => false,
1426            PanelEntry::Outline(..) => {
1427                cx.notify();
1428                return;
1429            }
1430            PanelEntry::Search(_) => {
1431                cx.notify();
1432                return;
1433            }
1434        };
1435        let auto_fold_dirs = OutlinePanelSettings::get_global(cx).auto_fold_dirs;
1436        let is_foldable = auto_fold_dirs && !is_root && self.is_foldable(&entry);
1437        let is_unfoldable = auto_fold_dirs && !is_root && self.is_unfoldable(&entry);
1438
1439        let context_menu = ContextMenu::build(window, cx, |menu, _, _| {
1440            menu.context(self.focus_handle.clone())
1441                .when(cfg!(target_os = "macos"), |menu| {
1442                    menu.action("Reveal in Finder", Box::new(RevealInFileManager))
1443                })
1444                .when(cfg!(not(target_os = "macos")), |menu| {
1445                    menu.action("Reveal in File Manager", Box::new(RevealInFileManager))
1446                })
1447                .action("Open in Terminal", Box::new(OpenInTerminal))
1448                .when(is_unfoldable, |menu| {
1449                    menu.action("Unfold Directory", Box::new(UnfoldDirectory))
1450                })
1451                .when(is_foldable, |menu| {
1452                    menu.action("Fold Directory", Box::new(FoldDirectory))
1453                })
1454                .separator()
1455                .action("Copy Path", Box::new(zed_actions::workspace::CopyPath))
1456                .action(
1457                    "Copy Relative Path",
1458                    Box::new(zed_actions::workspace::CopyRelativePath),
1459                )
1460        });
1461        window.focus(&context_menu.focus_handle(cx));
1462        let subscription = cx.subscribe(&context_menu, |outline_panel, _, _: &DismissEvent, cx| {
1463            outline_panel.context_menu.take();
1464            cx.notify();
1465        });
1466        self.context_menu = Some((context_menu, position, subscription));
1467        cx.notify();
1468    }
1469
1470    fn is_unfoldable(&self, entry: &PanelEntry) -> bool {
1471        matches!(entry, PanelEntry::FoldedDirs(..))
1472    }
1473
1474    fn is_foldable(&self, entry: &PanelEntry) -> bool {
1475        let (directory_worktree, directory_entry) = match entry {
1476            PanelEntry::Fs(FsEntry::Directory(FsEntryDirectory {
1477                worktree_id,
1478                entry: directory_entry,
1479                ..
1480            })) => (*worktree_id, Some(directory_entry)),
1481            _ => return false,
1482        };
1483        let Some(directory_entry) = directory_entry else {
1484            return false;
1485        };
1486
1487        if self
1488            .unfolded_dirs
1489            .get(&directory_worktree)
1490            .is_none_or(|unfolded_dirs| !unfolded_dirs.contains(&directory_entry.id))
1491        {
1492            return false;
1493        }
1494
1495        let children = self
1496            .fs_children_count
1497            .get(&directory_worktree)
1498            .and_then(|entries| entries.get(&directory_entry.path))
1499            .copied()
1500            .unwrap_or_default();
1501
1502        children.may_be_fold_part() && children.dirs > 0
1503    }
1504
1505    fn expand_selected_entry(
1506        &mut self,
1507        _: &ExpandSelectedEntry,
1508        window: &mut Window,
1509        cx: &mut Context<Self>,
1510    ) {
1511        let Some(active_editor) = self.active_editor() else {
1512            return;
1513        };
1514        let Some(selected_entry) = self.selected_entry().cloned() else {
1515            return;
1516        };
1517        let mut buffers_to_unfold = HashSet::default();
1518        let entry_to_expand = match &selected_entry {
1519            PanelEntry::FoldedDirs(FoldedDirsEntry {
1520                entries: dir_entries,
1521                worktree_id,
1522                ..
1523            }) => dir_entries.last().map(|entry| {
1524                buffers_to_unfold.extend(self.buffers_inside_directory(*worktree_id, entry));
1525                CollapsedEntry::Dir(*worktree_id, entry.id)
1526            }),
1527            PanelEntry::Fs(FsEntry::Directory(FsEntryDirectory {
1528                worktree_id, entry, ..
1529            })) => {
1530                buffers_to_unfold.extend(self.buffers_inside_directory(*worktree_id, entry));
1531                Some(CollapsedEntry::Dir(*worktree_id, entry.id))
1532            }
1533            PanelEntry::Fs(FsEntry::File(FsEntryFile {
1534                worktree_id,
1535                buffer_id,
1536                ..
1537            })) => {
1538                buffers_to_unfold.insert(*buffer_id);
1539                Some(CollapsedEntry::File(*worktree_id, *buffer_id))
1540            }
1541            PanelEntry::Fs(FsEntry::ExternalFile(external_file)) => {
1542                buffers_to_unfold.insert(external_file.buffer_id);
1543                Some(CollapsedEntry::ExternalFile(external_file.buffer_id))
1544            }
1545            PanelEntry::Outline(OutlineEntry::Excerpt(excerpt)) => {
1546                Some(CollapsedEntry::Excerpt(excerpt.buffer_id, excerpt.id))
1547            }
1548            PanelEntry::Outline(OutlineEntry::Outline(outline)) => Some(CollapsedEntry::Outline(
1549                outline.buffer_id,
1550                outline.excerpt_id,
1551                outline.outline.range.clone(),
1552            )),
1553            PanelEntry::Search(_) => return,
1554        };
1555        let Some(collapsed_entry) = entry_to_expand else {
1556            return;
1557        };
1558        let expanded = self.collapsed_entries.remove(&collapsed_entry);
1559        if expanded {
1560            if let CollapsedEntry::Dir(worktree_id, dir_entry_id) = collapsed_entry {
1561                let task = self.project.update(cx, |project, cx| {
1562                    project.expand_entry(worktree_id, dir_entry_id, cx)
1563                });
1564                if let Some(task) = task {
1565                    task.detach_and_log_err(cx);
1566                }
1567            };
1568
1569            active_editor.update(cx, |editor, cx| {
1570                buffers_to_unfold.retain(|buffer_id| editor.is_buffer_folded(*buffer_id, cx));
1571            });
1572            self.select_entry(selected_entry, true, window, cx);
1573            if buffers_to_unfold.is_empty() {
1574                self.update_cached_entries(None, window, cx);
1575            } else {
1576                self.toggle_buffers_fold(buffers_to_unfold, false, window, cx)
1577                    .detach();
1578            }
1579        } else {
1580            self.select_next(&SelectNext, window, cx)
1581        }
1582    }
1583
1584    fn collapse_selected_entry(
1585        &mut self,
1586        _: &CollapseSelectedEntry,
1587        window: &mut Window,
1588        cx: &mut Context<Self>,
1589    ) {
1590        let Some(active_editor) = self.active_editor() else {
1591            return;
1592        };
1593        let Some(selected_entry) = self.selected_entry().cloned() else {
1594            return;
1595        };
1596
1597        let mut buffers_to_fold = HashSet::default();
1598        let collapsed = match &selected_entry {
1599            PanelEntry::Fs(FsEntry::Directory(FsEntryDirectory {
1600                worktree_id, entry, ..
1601            })) => {
1602                if self
1603                    .collapsed_entries
1604                    .insert(CollapsedEntry::Dir(*worktree_id, entry.id))
1605                {
1606                    buffers_to_fold.extend(self.buffers_inside_directory(*worktree_id, entry));
1607                    true
1608                } else {
1609                    false
1610                }
1611            }
1612            PanelEntry::Fs(FsEntry::File(FsEntryFile {
1613                worktree_id,
1614                buffer_id,
1615                ..
1616            })) => {
1617                if self
1618                    .collapsed_entries
1619                    .insert(CollapsedEntry::File(*worktree_id, *buffer_id))
1620                {
1621                    buffers_to_fold.insert(*buffer_id);
1622                    true
1623                } else {
1624                    false
1625                }
1626            }
1627            PanelEntry::Fs(FsEntry::ExternalFile(external_file)) => {
1628                if self
1629                    .collapsed_entries
1630                    .insert(CollapsedEntry::ExternalFile(external_file.buffer_id))
1631                {
1632                    buffers_to_fold.insert(external_file.buffer_id);
1633                    true
1634                } else {
1635                    false
1636                }
1637            }
1638            PanelEntry::FoldedDirs(folded_dirs) => {
1639                let mut folded = false;
1640                if let Some(dir_entry) = folded_dirs.entries.last()
1641                    && self
1642                        .collapsed_entries
1643                        .insert(CollapsedEntry::Dir(folded_dirs.worktree_id, dir_entry.id))
1644                {
1645                    folded = true;
1646                    buffers_to_fold
1647                        .extend(self.buffers_inside_directory(folded_dirs.worktree_id, dir_entry));
1648                }
1649                folded
1650            }
1651            PanelEntry::Outline(OutlineEntry::Excerpt(excerpt)) => self
1652                .collapsed_entries
1653                .insert(CollapsedEntry::Excerpt(excerpt.buffer_id, excerpt.id)),
1654            PanelEntry::Outline(OutlineEntry::Outline(outline)) => {
1655                self.collapsed_entries.insert(CollapsedEntry::Outline(
1656                    outline.buffer_id,
1657                    outline.excerpt_id,
1658                    outline.outline.range.clone(),
1659                ))
1660            }
1661            PanelEntry::Search(_) => false,
1662        };
1663
1664        if collapsed {
1665            active_editor.update(cx, |editor, cx| {
1666                buffers_to_fold.retain(|buffer_id| !editor.is_buffer_folded(*buffer_id, cx));
1667            });
1668            self.select_entry(selected_entry, true, window, cx);
1669            if buffers_to_fold.is_empty() {
1670                self.update_cached_entries(None, window, cx);
1671            } else {
1672                self.toggle_buffers_fold(buffers_to_fold, true, window, cx)
1673                    .detach();
1674            }
1675        } else {
1676            self.select_parent(&SelectParent, window, cx);
1677        }
1678    }
1679
1680    pub fn expand_all_entries(
1681        &mut self,
1682        _: &ExpandAllEntries,
1683        window: &mut Window,
1684        cx: &mut Context<Self>,
1685    ) {
1686        let Some(active_editor) = self.active_editor() else {
1687            return;
1688        };
1689
1690        let mut to_uncollapse: HashSet<CollapsedEntry> = HashSet::default();
1691        let mut buffers_to_unfold: HashSet<BufferId> = HashSet::default();
1692
1693        for fs_entry in &self.fs_entries {
1694            match fs_entry {
1695                FsEntry::File(FsEntryFile {
1696                    worktree_id,
1697                    buffer_id,
1698                    ..
1699                }) => {
1700                    to_uncollapse.insert(CollapsedEntry::File(*worktree_id, *buffer_id));
1701                    buffers_to_unfold.insert(*buffer_id);
1702                }
1703                FsEntry::ExternalFile(FsEntryExternalFile { buffer_id, .. }) => {
1704                    to_uncollapse.insert(CollapsedEntry::ExternalFile(*buffer_id));
1705                    buffers_to_unfold.insert(*buffer_id);
1706                }
1707                FsEntry::Directory(FsEntryDirectory {
1708                    worktree_id, entry, ..
1709                }) => {
1710                    to_uncollapse.insert(CollapsedEntry::Dir(*worktree_id, entry.id));
1711                }
1712            }
1713        }
1714
1715        for (&buffer_id, excerpts) in &self.excerpts {
1716            for (&excerpt_id, excerpt) in excerpts {
1717                match &excerpt.outlines {
1718                    ExcerptOutlines::Outlines(outlines) => {
1719                        for outline in outlines {
1720                            to_uncollapse.insert(CollapsedEntry::Outline(
1721                                buffer_id,
1722                                excerpt_id,
1723                                outline.range.clone(),
1724                            ));
1725                        }
1726                    }
1727                    ExcerptOutlines::Invalidated(outlines) => {
1728                        for outline in outlines {
1729                            to_uncollapse.insert(CollapsedEntry::Outline(
1730                                buffer_id,
1731                                excerpt_id,
1732                                outline.range.clone(),
1733                            ));
1734                        }
1735                    }
1736                    ExcerptOutlines::NotFetched => {}
1737                }
1738                to_uncollapse.insert(CollapsedEntry::Excerpt(buffer_id, excerpt_id));
1739            }
1740        }
1741
1742        for cached in &self.cached_entries {
1743            if let PanelEntry::FoldedDirs(FoldedDirsEntry {
1744                worktree_id,
1745                entries,
1746                ..
1747            }) = &cached.entry
1748            {
1749                if let Some(last) = entries.last() {
1750                    to_uncollapse.insert(CollapsedEntry::Dir(*worktree_id, last.id));
1751                }
1752            }
1753        }
1754
1755        self.collapsed_entries
1756            .retain(|entry| !to_uncollapse.contains(entry));
1757
1758        active_editor.update(cx, |editor, cx| {
1759            buffers_to_unfold.retain(|buffer_id| editor.is_buffer_folded(*buffer_id, cx));
1760        });
1761
1762        if buffers_to_unfold.is_empty() {
1763            self.update_cached_entries(None, window, cx);
1764        } else {
1765            self.toggle_buffers_fold(buffers_to_unfold, false, window, cx)
1766                .detach();
1767        }
1768    }
1769
1770    pub fn collapse_all_entries(
1771        &mut self,
1772        _: &CollapseAllEntries,
1773        window: &mut Window,
1774        cx: &mut Context<Self>,
1775    ) {
1776        let Some(active_editor) = self.active_editor() else {
1777            return;
1778        };
1779        let mut buffers_to_fold = HashSet::default();
1780        self.collapsed_entries
1781            .extend(self.cached_entries.iter().filter_map(
1782                |cached_entry| match &cached_entry.entry {
1783                    PanelEntry::Fs(FsEntry::Directory(FsEntryDirectory {
1784                        worktree_id,
1785                        entry,
1786                        ..
1787                    })) => Some(CollapsedEntry::Dir(*worktree_id, entry.id)),
1788                    PanelEntry::Fs(FsEntry::File(FsEntryFile {
1789                        worktree_id,
1790                        buffer_id,
1791                        ..
1792                    })) => {
1793                        buffers_to_fold.insert(*buffer_id);
1794                        Some(CollapsedEntry::File(*worktree_id, *buffer_id))
1795                    }
1796                    PanelEntry::Fs(FsEntry::ExternalFile(external_file)) => {
1797                        buffers_to_fold.insert(external_file.buffer_id);
1798                        Some(CollapsedEntry::ExternalFile(external_file.buffer_id))
1799                    }
1800                    PanelEntry::FoldedDirs(FoldedDirsEntry {
1801                        worktree_id,
1802                        entries,
1803                        ..
1804                    }) => Some(CollapsedEntry::Dir(*worktree_id, entries.last()?.id)),
1805                    PanelEntry::Outline(OutlineEntry::Excerpt(excerpt)) => {
1806                        Some(CollapsedEntry::Excerpt(excerpt.buffer_id, excerpt.id))
1807                    }
1808                    PanelEntry::Outline(OutlineEntry::Outline(outline)) => {
1809                        Some(CollapsedEntry::Outline(
1810                            outline.buffer_id,
1811                            outline.excerpt_id,
1812                            outline.outline.range.clone(),
1813                        ))
1814                    }
1815                    PanelEntry::Search(_) => None,
1816                },
1817            ));
1818
1819        active_editor.update(cx, |editor, cx| {
1820            buffers_to_fold.retain(|buffer_id| !editor.is_buffer_folded(*buffer_id, cx));
1821        });
1822        if buffers_to_fold.is_empty() {
1823            self.update_cached_entries(None, window, cx);
1824        } else {
1825            self.toggle_buffers_fold(buffers_to_fold, true, window, cx)
1826                .detach();
1827        }
1828    }
1829
1830    fn toggle_expanded(&mut self, entry: &PanelEntry, window: &mut Window, cx: &mut Context<Self>) {
1831        let Some(active_editor) = self.active_editor() else {
1832            return;
1833        };
1834        let mut fold = false;
1835        let mut buffers_to_toggle = HashSet::default();
1836        match entry {
1837            PanelEntry::Fs(FsEntry::Directory(FsEntryDirectory {
1838                worktree_id,
1839                entry: dir_entry,
1840                ..
1841            })) => {
1842                let entry_id = dir_entry.id;
1843                let collapsed_entry = CollapsedEntry::Dir(*worktree_id, entry_id);
1844                buffers_to_toggle.extend(self.buffers_inside_directory(*worktree_id, dir_entry));
1845                if self.collapsed_entries.remove(&collapsed_entry) {
1846                    self.project
1847                        .update(cx, |project, cx| {
1848                            project.expand_entry(*worktree_id, entry_id, cx)
1849                        })
1850                        .unwrap_or_else(|| Task::ready(Ok(())))
1851                        .detach_and_log_err(cx);
1852                } else {
1853                    self.collapsed_entries.insert(collapsed_entry);
1854                    fold = true;
1855                }
1856            }
1857            PanelEntry::Fs(FsEntry::File(FsEntryFile {
1858                worktree_id,
1859                buffer_id,
1860                ..
1861            })) => {
1862                let collapsed_entry = CollapsedEntry::File(*worktree_id, *buffer_id);
1863                buffers_to_toggle.insert(*buffer_id);
1864                if !self.collapsed_entries.remove(&collapsed_entry) {
1865                    self.collapsed_entries.insert(collapsed_entry);
1866                    fold = true;
1867                }
1868            }
1869            PanelEntry::Fs(FsEntry::ExternalFile(external_file)) => {
1870                let collapsed_entry = CollapsedEntry::ExternalFile(external_file.buffer_id);
1871                buffers_to_toggle.insert(external_file.buffer_id);
1872                if !self.collapsed_entries.remove(&collapsed_entry) {
1873                    self.collapsed_entries.insert(collapsed_entry);
1874                    fold = true;
1875                }
1876            }
1877            PanelEntry::FoldedDirs(FoldedDirsEntry {
1878                worktree_id,
1879                entries: dir_entries,
1880                ..
1881            }) => {
1882                if let Some(dir_entry) = dir_entries.first() {
1883                    let entry_id = dir_entry.id;
1884                    let collapsed_entry = CollapsedEntry::Dir(*worktree_id, entry_id);
1885                    buffers_to_toggle
1886                        .extend(self.buffers_inside_directory(*worktree_id, dir_entry));
1887                    if self.collapsed_entries.remove(&collapsed_entry) {
1888                        self.project
1889                            .update(cx, |project, cx| {
1890                                project.expand_entry(*worktree_id, entry_id, cx)
1891                            })
1892                            .unwrap_or_else(|| Task::ready(Ok(())))
1893                            .detach_and_log_err(cx);
1894                    } else {
1895                        self.collapsed_entries.insert(collapsed_entry);
1896                        fold = true;
1897                    }
1898                }
1899            }
1900            PanelEntry::Outline(OutlineEntry::Excerpt(excerpt)) => {
1901                let collapsed_entry = CollapsedEntry::Excerpt(excerpt.buffer_id, excerpt.id);
1902                if !self.collapsed_entries.remove(&collapsed_entry) {
1903                    self.collapsed_entries.insert(collapsed_entry);
1904                }
1905            }
1906            PanelEntry::Outline(OutlineEntry::Outline(outline)) => {
1907                let collapsed_entry = CollapsedEntry::Outline(
1908                    outline.buffer_id,
1909                    outline.excerpt_id,
1910                    outline.outline.range.clone(),
1911                );
1912                if !self.collapsed_entries.remove(&collapsed_entry) {
1913                    self.collapsed_entries.insert(collapsed_entry);
1914                }
1915            }
1916            _ => {}
1917        }
1918
1919        active_editor.update(cx, |editor, cx| {
1920            buffers_to_toggle.retain(|buffer_id| {
1921                let folded = editor.is_buffer_folded(*buffer_id, cx);
1922                if fold { !folded } else { folded }
1923            });
1924        });
1925
1926        self.select_entry(entry.clone(), true, window, cx);
1927        if buffers_to_toggle.is_empty() {
1928            self.update_cached_entries(None, window, cx);
1929        } else {
1930            self.toggle_buffers_fold(buffers_to_toggle, fold, window, cx)
1931                .detach();
1932        }
1933    }
1934
1935    fn toggle_buffers_fold(
1936        &self,
1937        buffers: HashSet<BufferId>,
1938        fold: bool,
1939        window: &mut Window,
1940        cx: &mut Context<Self>,
1941    ) -> Task<()> {
1942        let Some(active_editor) = self.active_editor() else {
1943            return Task::ready(());
1944        };
1945        cx.spawn_in(window, async move |outline_panel, cx| {
1946            outline_panel
1947                .update_in(cx, |outline_panel, window, cx| {
1948                    active_editor.update(cx, |editor, cx| {
1949                        for buffer_id in buffers {
1950                            outline_panel
1951                                .preserve_selection_on_buffer_fold_toggles
1952                                .insert(buffer_id);
1953                            if fold {
1954                                editor.fold_buffer(buffer_id, cx);
1955                            } else {
1956                                editor.unfold_buffer(buffer_id, cx);
1957                            }
1958                        }
1959                    });
1960                    if let Some(selection) = outline_panel.selected_entry().cloned() {
1961                        outline_panel.scroll_editor_to_entry(&selection, false, false, window, cx);
1962                    }
1963                })
1964                .ok();
1965        })
1966    }
1967
1968    fn copy_path(
1969        &mut self,
1970        _: &zed_actions::workspace::CopyPath,
1971        _: &mut Window,
1972        cx: &mut Context<Self>,
1973    ) {
1974        if let Some(clipboard_text) = self
1975            .selected_entry()
1976            .and_then(|entry| self.abs_path(entry, cx))
1977            .map(|p| p.to_string_lossy().into_owned())
1978        {
1979            cx.write_to_clipboard(ClipboardItem::new_string(clipboard_text));
1980        }
1981    }
1982
1983    fn copy_relative_path(
1984        &mut self,
1985        _: &zed_actions::workspace::CopyRelativePath,
1986        _: &mut Window,
1987        cx: &mut Context<Self>,
1988    ) {
1989        let path_style = self.project.read(cx).path_style(cx);
1990        if let Some(clipboard_text) = self
1991            .selected_entry()
1992            .and_then(|entry| match entry {
1993                PanelEntry::Fs(entry) => self.relative_path(entry, cx),
1994                PanelEntry::FoldedDirs(folded_dirs) => {
1995                    folded_dirs.entries.last().map(|entry| entry.path.clone())
1996                }
1997                PanelEntry::Search(_) | PanelEntry::Outline(..) => None,
1998            })
1999            .map(|p| p.display(path_style).to_string())
2000        {
2001            cx.write_to_clipboard(ClipboardItem::new_string(clipboard_text));
2002        }
2003    }
2004
2005    fn reveal_in_finder(
2006        &mut self,
2007        _: &RevealInFileManager,
2008        _: &mut Window,
2009        cx: &mut Context<Self>,
2010    ) {
2011        if let Some(abs_path) = self
2012            .selected_entry()
2013            .and_then(|entry| self.abs_path(entry, cx))
2014        {
2015            cx.reveal_path(&abs_path);
2016        }
2017    }
2018
2019    fn open_in_terminal(
2020        &mut self,
2021        _: &OpenInTerminal,
2022        window: &mut Window,
2023        cx: &mut Context<Self>,
2024    ) {
2025        let selected_entry = self.selected_entry();
2026        let abs_path = selected_entry.and_then(|entry| self.abs_path(entry, cx));
2027        let working_directory = if let (
2028            Some(abs_path),
2029            Some(PanelEntry::Fs(FsEntry::File(..) | FsEntry::ExternalFile(..))),
2030        ) = (&abs_path, selected_entry)
2031        {
2032            abs_path.parent().map(|p| p.to_owned())
2033        } else {
2034            abs_path
2035        };
2036
2037        if let Some(working_directory) = working_directory {
2038            window.dispatch_action(
2039                workspace::OpenTerminal { working_directory }.boxed_clone(),
2040                cx,
2041            )
2042        }
2043    }
2044
2045    fn reveal_entry_for_selection(
2046        &mut self,
2047        editor: Entity<Editor>,
2048        window: &mut Window,
2049        cx: &mut Context<Self>,
2050    ) {
2051        if !self.active
2052            || !OutlinePanelSettings::get_global(cx).auto_reveal_entries
2053            || self.focus_handle.contains_focused(window, cx)
2054        {
2055            return;
2056        }
2057        let project = self.project.clone();
2058        self.reveal_selection_task = cx.spawn_in(window, async move |outline_panel, cx| {
2059            cx.background_executor().timer(UPDATE_DEBOUNCE).await;
2060            let entry_with_selection =
2061                outline_panel.update_in(cx, |outline_panel, window, cx| {
2062                    outline_panel.location_for_editor_selection(&editor, window, cx)
2063                })?;
2064            let Some(entry_with_selection) = entry_with_selection else {
2065                outline_panel.update(cx, |outline_panel, cx| {
2066                    outline_panel.selected_entry = SelectedEntry::None;
2067                    cx.notify();
2068                })?;
2069                return Ok(());
2070            };
2071            let related_buffer_entry = match &entry_with_selection {
2072                PanelEntry::Fs(FsEntry::File(FsEntryFile {
2073                    worktree_id,
2074                    buffer_id,
2075                    ..
2076                })) => project.update(cx, |project, cx| {
2077                    let entry_id = project
2078                        .buffer_for_id(*buffer_id, cx)
2079                        .and_then(|buffer| buffer.read(cx).entry_id(cx));
2080                    project
2081                        .worktree_for_id(*worktree_id, cx)
2082                        .zip(entry_id)
2083                        .and_then(|(worktree, entry_id)| {
2084                            let entry = worktree.read(cx).entry_for_id(entry_id)?.clone();
2085                            Some((worktree, entry))
2086                        })
2087                })?,
2088                PanelEntry::Outline(outline_entry) => {
2089                    let (buffer_id, excerpt_id) = outline_entry.ids();
2090                    outline_panel.update(cx, |outline_panel, cx| {
2091                        outline_panel
2092                            .collapsed_entries
2093                            .remove(&CollapsedEntry::ExternalFile(buffer_id));
2094                        outline_panel
2095                            .collapsed_entries
2096                            .remove(&CollapsedEntry::Excerpt(buffer_id, excerpt_id));
2097                        let project = outline_panel.project.read(cx);
2098                        let entry_id = project
2099                            .buffer_for_id(buffer_id, cx)
2100                            .and_then(|buffer| buffer.read(cx).entry_id(cx));
2101
2102                        entry_id.and_then(|entry_id| {
2103                            project
2104                                .worktree_for_entry(entry_id, cx)
2105                                .and_then(|worktree| {
2106                                    let worktree_id = worktree.read(cx).id();
2107                                    outline_panel
2108                                        .collapsed_entries
2109                                        .remove(&CollapsedEntry::File(worktree_id, buffer_id));
2110                                    let entry = worktree.read(cx).entry_for_id(entry_id)?.clone();
2111                                    Some((worktree, entry))
2112                                })
2113                        })
2114                    })?
2115                }
2116                PanelEntry::Fs(FsEntry::ExternalFile(..)) => None,
2117                PanelEntry::Search(SearchEntry { match_range, .. }) => match_range
2118                    .start
2119                    .text_anchor
2120                    .buffer_id
2121                    .or(match_range.end.text_anchor.buffer_id)
2122                    .map(|buffer_id| {
2123                        outline_panel.update(cx, |outline_panel, cx| {
2124                            outline_panel
2125                                .collapsed_entries
2126                                .remove(&CollapsedEntry::ExternalFile(buffer_id));
2127                            let project = project.read(cx);
2128                            let entry_id = project
2129                                .buffer_for_id(buffer_id, cx)
2130                                .and_then(|buffer| buffer.read(cx).entry_id(cx));
2131
2132                            entry_id.and_then(|entry_id| {
2133                                project
2134                                    .worktree_for_entry(entry_id, cx)
2135                                    .and_then(|worktree| {
2136                                        let worktree_id = worktree.read(cx).id();
2137                                        outline_panel
2138                                            .collapsed_entries
2139                                            .remove(&CollapsedEntry::File(worktree_id, buffer_id));
2140                                        let entry =
2141                                            worktree.read(cx).entry_for_id(entry_id)?.clone();
2142                                        Some((worktree, entry))
2143                                    })
2144                            })
2145                        })
2146                    })
2147                    .transpose()?
2148                    .flatten(),
2149                _ => return anyhow::Ok(()),
2150            };
2151            if let Some((worktree, buffer_entry)) = related_buffer_entry {
2152                outline_panel.update(cx, |outline_panel, cx| {
2153                    let worktree_id = worktree.read(cx).id();
2154                    let mut dirs_to_expand = Vec::new();
2155                    {
2156                        let mut traversal = worktree.read(cx).traverse_from_path(
2157                            true,
2158                            true,
2159                            true,
2160                            buffer_entry.path.as_ref(),
2161                        );
2162                        let mut current_entry = buffer_entry;
2163                        loop {
2164                            if current_entry.is_dir()
2165                                && outline_panel
2166                                    .collapsed_entries
2167                                    .remove(&CollapsedEntry::Dir(worktree_id, current_entry.id))
2168                            {
2169                                dirs_to_expand.push(current_entry.id);
2170                            }
2171
2172                            if traversal.back_to_parent()
2173                                && let Some(parent_entry) = traversal.entry()
2174                            {
2175                                current_entry = parent_entry.clone();
2176                                continue;
2177                            }
2178                            break;
2179                        }
2180                    }
2181                    for dir_to_expand in dirs_to_expand {
2182                        project
2183                            .update(cx, |project, cx| {
2184                                project.expand_entry(worktree_id, dir_to_expand, cx)
2185                            })
2186                            .unwrap_or_else(|| Task::ready(Ok(())))
2187                            .detach_and_log_err(cx)
2188                    }
2189                })?
2190            }
2191
2192            outline_panel.update_in(cx, |outline_panel, window, cx| {
2193                outline_panel.select_entry(entry_with_selection, false, window, cx);
2194                outline_panel.update_cached_entries(None, window, cx);
2195            })?;
2196
2197            anyhow::Ok(())
2198        });
2199    }
2200
2201    fn render_excerpt(
2202        &self,
2203        excerpt: &OutlineEntryExcerpt,
2204        depth: usize,
2205        window: &mut Window,
2206        cx: &mut Context<OutlinePanel>,
2207    ) -> Option<Stateful<Div>> {
2208        let item_id = ElementId::from(excerpt.id.to_proto() as usize);
2209        let is_active = match self.selected_entry() {
2210            Some(PanelEntry::Outline(OutlineEntry::Excerpt(selected_excerpt))) => {
2211                selected_excerpt.buffer_id == excerpt.buffer_id && selected_excerpt.id == excerpt.id
2212            }
2213            _ => false,
2214        };
2215        let has_outlines = self
2216            .excerpts
2217            .get(&excerpt.buffer_id)
2218            .and_then(|excerpts| match &excerpts.get(&excerpt.id)?.outlines {
2219                ExcerptOutlines::Outlines(outlines) => Some(outlines),
2220                ExcerptOutlines::Invalidated(outlines) => Some(outlines),
2221                ExcerptOutlines::NotFetched => None,
2222            })
2223            .is_some_and(|outlines| !outlines.is_empty());
2224        let is_expanded = !self
2225            .collapsed_entries
2226            .contains(&CollapsedEntry::Excerpt(excerpt.buffer_id, excerpt.id));
2227        let color = entry_label_color(is_active);
2228        let icon = if has_outlines {
2229            FileIcons::get_chevron_icon(is_expanded, cx)
2230                .map(|icon_path| Icon::from_path(icon_path).color(color).into_any_element())
2231        } else {
2232            None
2233        }
2234        .unwrap_or_else(empty_icon);
2235
2236        let label = self.excerpt_label(excerpt.buffer_id, &excerpt.range, cx)?;
2237        let label_element = Label::new(label)
2238            .single_line()
2239            .color(color)
2240            .into_any_element();
2241
2242        Some(self.entry_element(
2243            PanelEntry::Outline(OutlineEntry::Excerpt(excerpt.clone())),
2244            item_id,
2245            depth,
2246            icon,
2247            is_active,
2248            label_element,
2249            window,
2250            cx,
2251        ))
2252    }
2253
2254    fn excerpt_label(
2255        &self,
2256        buffer_id: BufferId,
2257        range: &ExcerptRange<language::Anchor>,
2258        cx: &App,
2259    ) -> Option<String> {
2260        let buffer_snapshot = self.buffer_snapshot_for_id(buffer_id, cx)?;
2261        let excerpt_range = range.context.to_point(&buffer_snapshot);
2262        Some(format!(
2263            "Lines {}- {}",
2264            excerpt_range.start.row + 1,
2265            excerpt_range.end.row + 1,
2266        ))
2267    }
2268
2269    fn render_outline(
2270        &self,
2271        outline: &OutlineEntryOutline,
2272        depth: usize,
2273        string_match: Option<&StringMatch>,
2274        window: &mut Window,
2275        cx: &mut Context<Self>,
2276    ) -> Stateful<Div> {
2277        let item_id = ElementId::from(SharedString::from(format!(
2278            "{:?}|{:?}{:?}|{:?}",
2279            outline.buffer_id, outline.excerpt_id, outline.outline.range, &outline.outline.text,
2280        )));
2281
2282        let label_element = outline::render_item(
2283            &outline.outline,
2284            string_match
2285                .map(|string_match| string_match.ranges().collect::<Vec<_>>())
2286                .unwrap_or_default(),
2287            cx,
2288        )
2289        .into_any_element();
2290
2291        let is_active = match self.selected_entry() {
2292            Some(PanelEntry::Outline(OutlineEntry::Outline(selected))) => {
2293                outline == selected && outline.outline == selected.outline
2294            }
2295            _ => false,
2296        };
2297
2298        let has_children = self
2299            .outline_children_cache
2300            .get(&outline.buffer_id)
2301            .and_then(|children_map| {
2302                let key = (outline.outline.range.clone(), outline.outline.depth);
2303                children_map.get(&key)
2304            })
2305            .copied()
2306            .unwrap_or(false);
2307        let is_expanded = !self.collapsed_entries.contains(&CollapsedEntry::Outline(
2308            outline.buffer_id,
2309            outline.excerpt_id,
2310            outline.outline.range.clone(),
2311        ));
2312
2313        let icon = if has_children {
2314            FileIcons::get_chevron_icon(is_expanded, cx)
2315                .map(|icon_path| {
2316                    Icon::from_path(icon_path)
2317                        .color(entry_label_color(is_active))
2318                        .into_any_element()
2319                })
2320                .unwrap_or_else(empty_icon)
2321        } else {
2322            empty_icon()
2323        };
2324
2325        self.entry_element(
2326            PanelEntry::Outline(OutlineEntry::Outline(outline.clone())),
2327            item_id,
2328            depth,
2329            icon,
2330            is_active,
2331            label_element,
2332            window,
2333            cx,
2334        )
2335    }
2336
2337    fn render_entry(
2338        &self,
2339        rendered_entry: &FsEntry,
2340        depth: usize,
2341        string_match: Option<&StringMatch>,
2342        window: &mut Window,
2343        cx: &mut Context<Self>,
2344    ) -> Stateful<Div> {
2345        let settings = OutlinePanelSettings::get_global(cx);
2346        let is_active = match self.selected_entry() {
2347            Some(PanelEntry::Fs(selected_entry)) => selected_entry == rendered_entry,
2348            _ => false,
2349        };
2350        let (item_id, label_element, icon) = match rendered_entry {
2351            FsEntry::File(FsEntryFile {
2352                worktree_id, entry, ..
2353            }) => {
2354                let name = self.entry_name(worktree_id, entry, cx);
2355                let color =
2356                    entry_git_aware_label_color(entry.git_summary, entry.is_ignored, is_active);
2357                let icon = if settings.file_icons {
2358                    FileIcons::get_icon(entry.path.as_std_path(), cx)
2359                        .map(|icon_path| Icon::from_path(icon_path).color(color).into_any_element())
2360                } else {
2361                    None
2362                };
2363                (
2364                    ElementId::from(entry.id.to_proto() as usize),
2365                    HighlightedLabel::new(
2366                        name,
2367                        string_match
2368                            .map(|string_match| string_match.positions.clone())
2369                            .unwrap_or_default(),
2370                    )
2371                    .color(color)
2372                    .into_any_element(),
2373                    icon.unwrap_or_else(empty_icon),
2374                )
2375            }
2376            FsEntry::Directory(directory) => {
2377                let name = self.entry_name(&directory.worktree_id, &directory.entry, cx);
2378
2379                let is_expanded = !self.collapsed_entries.contains(&CollapsedEntry::Dir(
2380                    directory.worktree_id,
2381                    directory.entry.id,
2382                ));
2383                let color = entry_git_aware_label_color(
2384                    directory.entry.git_summary,
2385                    directory.entry.is_ignored,
2386                    is_active,
2387                );
2388                let icon = if settings.folder_icons {
2389                    FileIcons::get_folder_icon(is_expanded, directory.entry.path.as_std_path(), cx)
2390                } else {
2391                    FileIcons::get_chevron_icon(is_expanded, cx)
2392                }
2393                .map(Icon::from_path)
2394                .map(|icon| icon.color(color).into_any_element());
2395                (
2396                    ElementId::from(directory.entry.id.to_proto() as usize),
2397                    HighlightedLabel::new(
2398                        name,
2399                        string_match
2400                            .map(|string_match| string_match.positions.clone())
2401                            .unwrap_or_default(),
2402                    )
2403                    .color(color)
2404                    .into_any_element(),
2405                    icon.unwrap_or_else(empty_icon),
2406                )
2407            }
2408            FsEntry::ExternalFile(external_file) => {
2409                let color = entry_label_color(is_active);
2410                let (icon, name) = match self.buffer_snapshot_for_id(external_file.buffer_id, cx) {
2411                    Some(buffer_snapshot) => match buffer_snapshot.file() {
2412                        Some(file) => {
2413                            let path = file.path();
2414                            let icon = if settings.file_icons {
2415                                FileIcons::get_icon(path.as_std_path(), cx)
2416                            } else {
2417                                None
2418                            }
2419                            .map(Icon::from_path)
2420                            .map(|icon| icon.color(color).into_any_element());
2421                            (icon, file_name(path.as_std_path()))
2422                        }
2423                        None => (None, "Untitled".to_string()),
2424                    },
2425                    None => (None, "Unknown buffer".to_string()),
2426                };
2427                (
2428                    ElementId::from(external_file.buffer_id.to_proto() as usize),
2429                    HighlightedLabel::new(
2430                        name,
2431                        string_match
2432                            .map(|string_match| string_match.positions.clone())
2433                            .unwrap_or_default(),
2434                    )
2435                    .color(color)
2436                    .into_any_element(),
2437                    icon.unwrap_or_else(empty_icon),
2438                )
2439            }
2440        };
2441
2442        self.entry_element(
2443            PanelEntry::Fs(rendered_entry.clone()),
2444            item_id,
2445            depth,
2446            icon,
2447            is_active,
2448            label_element,
2449            window,
2450            cx,
2451        )
2452    }
2453
2454    fn render_folded_dirs(
2455        &self,
2456        folded_dir: &FoldedDirsEntry,
2457        depth: usize,
2458        string_match: Option<&StringMatch>,
2459        window: &mut Window,
2460        cx: &mut Context<OutlinePanel>,
2461    ) -> Stateful<Div> {
2462        let settings = OutlinePanelSettings::get_global(cx);
2463        let is_active = match self.selected_entry() {
2464            Some(PanelEntry::FoldedDirs(selected_dirs)) => {
2465                selected_dirs.worktree_id == folded_dir.worktree_id
2466                    && selected_dirs.entries == folded_dir.entries
2467            }
2468            _ => false,
2469        };
2470        let (item_id, label_element, icon) = {
2471            let name = self.dir_names_string(&folded_dir.entries, folded_dir.worktree_id, cx);
2472
2473            let is_expanded = folded_dir.entries.iter().all(|dir| {
2474                !self
2475                    .collapsed_entries
2476                    .contains(&CollapsedEntry::Dir(folded_dir.worktree_id, dir.id))
2477            });
2478            let is_ignored = folded_dir.entries.iter().any(|entry| entry.is_ignored);
2479            let git_status = folded_dir
2480                .entries
2481                .first()
2482                .map(|entry| entry.git_summary)
2483                .unwrap_or_default();
2484            let color = entry_git_aware_label_color(git_status, is_ignored, is_active);
2485            let icon = if settings.folder_icons {
2486                FileIcons::get_folder_icon(is_expanded, &Path::new(&name), cx)
2487            } else {
2488                FileIcons::get_chevron_icon(is_expanded, cx)
2489            }
2490            .map(Icon::from_path)
2491            .map(|icon| icon.color(color).into_any_element());
2492            (
2493                ElementId::from(
2494                    folded_dir
2495                        .entries
2496                        .last()
2497                        .map(|entry| entry.id.to_proto())
2498                        .unwrap_or_else(|| folded_dir.worktree_id.to_proto())
2499                        as usize,
2500                ),
2501                HighlightedLabel::new(
2502                    name,
2503                    string_match
2504                        .map(|string_match| string_match.positions.clone())
2505                        .unwrap_or_default(),
2506                )
2507                .color(color)
2508                .into_any_element(),
2509                icon.unwrap_or_else(empty_icon),
2510            )
2511        };
2512
2513        self.entry_element(
2514            PanelEntry::FoldedDirs(folded_dir.clone()),
2515            item_id,
2516            depth,
2517            icon,
2518            is_active,
2519            label_element,
2520            window,
2521            cx,
2522        )
2523    }
2524
2525    fn render_search_match(
2526        &mut self,
2527        multi_buffer_snapshot: Option<&MultiBufferSnapshot>,
2528        match_range: &Range<editor::Anchor>,
2529        render_data: &Arc<OnceLock<SearchData>>,
2530        kind: SearchKind,
2531        depth: usize,
2532        string_match: Option<&StringMatch>,
2533        window: &mut Window,
2534        cx: &mut Context<Self>,
2535    ) -> Option<Stateful<Div>> {
2536        let search_data = match render_data.get() {
2537            Some(search_data) => search_data,
2538            None => {
2539                if let ItemsDisplayMode::Search(search_state) = &mut self.mode
2540                    && let Some(multi_buffer_snapshot) = multi_buffer_snapshot
2541                {
2542                    search_state
2543                        .highlight_search_match_tx
2544                        .try_send(HighlightArguments {
2545                            multi_buffer_snapshot: multi_buffer_snapshot.clone(),
2546                            match_range: match_range.clone(),
2547                            search_data: Arc::clone(render_data),
2548                        })
2549                        .ok();
2550                }
2551                return None;
2552            }
2553        };
2554        let search_matches = string_match
2555            .iter()
2556            .flat_map(|string_match| string_match.ranges())
2557            .collect::<Vec<_>>();
2558        let match_ranges = if search_matches.is_empty() {
2559            &search_data.search_match_indices
2560        } else {
2561            &search_matches
2562        };
2563        let label_element = outline::render_item(
2564            &OutlineItem {
2565                depth,
2566                annotation_range: None,
2567                range: search_data.context_range.clone(),
2568                text: search_data.context_text.clone(),
2569                source_range_for_text: search_data.context_range.clone(),
2570                highlight_ranges: search_data
2571                    .highlights_data
2572                    .get()
2573                    .cloned()
2574                    .unwrap_or_default(),
2575                name_ranges: search_data.search_match_indices.clone(),
2576                body_range: Some(search_data.context_range.clone()),
2577            },
2578            match_ranges.iter().cloned(),
2579            cx,
2580        );
2581        let truncated_contents_label = || Label::new(TRUNCATED_CONTEXT_MARK);
2582        let entire_label = h_flex()
2583            .justify_center()
2584            .p_0()
2585            .when(search_data.truncated_left, |parent| {
2586                parent.child(truncated_contents_label())
2587            })
2588            .child(label_element)
2589            .when(search_data.truncated_right, |parent| {
2590                parent.child(truncated_contents_label())
2591            })
2592            .into_any_element();
2593
2594        let is_active = match self.selected_entry() {
2595            Some(PanelEntry::Search(SearchEntry {
2596                match_range: selected_match_range,
2597                ..
2598            })) => match_range == selected_match_range,
2599            _ => false,
2600        };
2601        Some(self.entry_element(
2602            PanelEntry::Search(SearchEntry {
2603                kind,
2604                match_range: match_range.clone(),
2605                render_data: render_data.clone(),
2606            }),
2607            ElementId::from(SharedString::from(format!("search-{match_range:?}"))),
2608            depth,
2609            empty_icon(),
2610            is_active,
2611            entire_label,
2612            window,
2613            cx,
2614        ))
2615    }
2616
2617    fn entry_element(
2618        &self,
2619        rendered_entry: PanelEntry,
2620        item_id: ElementId,
2621        depth: usize,
2622        icon_element: AnyElement,
2623        is_active: bool,
2624        label_element: gpui::AnyElement,
2625        window: &mut Window,
2626        cx: &mut Context<OutlinePanel>,
2627    ) -> Stateful<Div> {
2628        let settings = OutlinePanelSettings::get_global(cx);
2629        div()
2630            .text_ui(cx)
2631            .id(item_id.clone())
2632            .on_click({
2633                let clicked_entry = rendered_entry.clone();
2634                cx.listener(move |outline_panel, event: &gpui::ClickEvent, window, cx| {
2635                    if event.is_right_click() || event.first_focus() {
2636                        return;
2637                    }
2638
2639                    let change_focus = event.click_count() > 1;
2640                    outline_panel.toggle_expanded(&clicked_entry, window, cx);
2641
2642                    outline_panel.scroll_editor_to_entry(
2643                        &clicked_entry,
2644                        true,
2645                        change_focus,
2646                        window,
2647                        cx,
2648                    );
2649                })
2650            })
2651            .cursor_pointer()
2652            .child(
2653                ListItem::new(item_id)
2654                    .indent_level(depth)
2655                    .indent_step_size(px(settings.indent_size))
2656                    .toggle_state(is_active)
2657                    .child(
2658                        h_flex()
2659                            .child(h_flex().w(px(16.)).justify_center().child(icon_element))
2660                            .child(h_flex().h_6().child(label_element).ml_1()),
2661                    )
2662                    .on_secondary_mouse_down(cx.listener(
2663                        move |outline_panel, event: &MouseDownEvent, window, cx| {
2664                            // Stop propagation to prevent the catch-all context menu for the project
2665                            // panel from being deployed.
2666                            cx.stop_propagation();
2667                            outline_panel.deploy_context_menu(
2668                                event.position,
2669                                rendered_entry.clone(),
2670                                window,
2671                                cx,
2672                            )
2673                        },
2674                    )),
2675            )
2676            .border_1()
2677            .border_r_2()
2678            .rounded_none()
2679            .hover(|style| {
2680                if is_active {
2681                    style
2682                } else {
2683                    let hover_color = cx.theme().colors().ghost_element_hover;
2684                    style.bg(hover_color).border_color(hover_color)
2685                }
2686            })
2687            .when(
2688                is_active && self.focus_handle.contains_focused(window, cx),
2689                |div| div.border_color(cx.theme().colors().panel_focused_border),
2690            )
2691    }
2692
2693    fn entry_name(&self, worktree_id: &WorktreeId, entry: &Entry, cx: &App) -> String {
2694        match self.project.read(cx).worktree_for_id(*worktree_id, cx) {
2695            Some(worktree) => {
2696                let worktree = worktree.read(cx);
2697                match worktree.snapshot().root_entry() {
2698                    Some(root_entry) => {
2699                        if root_entry.id == entry.id {
2700                            file_name(worktree.abs_path().as_ref())
2701                        } else {
2702                            let path = worktree.absolutize(entry.path.as_ref());
2703                            file_name(&path)
2704                        }
2705                    }
2706                    None => {
2707                        let path = worktree.absolutize(entry.path.as_ref());
2708                        file_name(&path)
2709                    }
2710                }
2711            }
2712            None => file_name(entry.path.as_std_path()),
2713        }
2714    }
2715
2716    fn update_fs_entries(
2717        &mut self,
2718        active_editor: Entity<Editor>,
2719        debounce: Option<Duration>,
2720        window: &mut Window,
2721        cx: &mut Context<Self>,
2722    ) {
2723        if !self.active {
2724            return;
2725        }
2726
2727        let auto_fold_dirs = OutlinePanelSettings::get_global(cx).auto_fold_dirs;
2728        let active_multi_buffer = active_editor.read(cx).buffer().clone();
2729        let new_entries = self.new_entries_for_fs_update.clone();
2730        let repo_snapshots = self.project.update(cx, |project, cx| {
2731            project.git_store().read(cx).repo_snapshots(cx)
2732        });
2733        self.fs_entries_update_task = cx.spawn_in(window, async move |outline_panel, cx| {
2734            if let Some(debounce) = debounce {
2735                cx.background_executor().timer(debounce).await;
2736            }
2737
2738            let mut new_collapsed_entries = HashSet::default();
2739            let mut new_unfolded_dirs = HashMap::default();
2740            let mut root_entries = HashSet::default();
2741            let mut new_excerpts = HashMap::<BufferId, HashMap<ExcerptId, Excerpt>>::default();
2742            let Ok(buffer_excerpts) = outline_panel.update(cx, |outline_panel, cx| {
2743                let git_store = outline_panel.project.read(cx).git_store().clone();
2744                new_collapsed_entries = outline_panel.collapsed_entries.clone();
2745                new_unfolded_dirs = outline_panel.unfolded_dirs.clone();
2746                let multi_buffer_snapshot = active_multi_buffer.read(cx).snapshot(cx);
2747
2748                multi_buffer_snapshot.excerpts().fold(
2749                    HashMap::default(),
2750                    |mut buffer_excerpts, (excerpt_id, buffer_snapshot, excerpt_range)| {
2751                        let buffer_id = buffer_snapshot.remote_id();
2752                        let file = File::from_dyn(buffer_snapshot.file());
2753                        let entry_id = file.and_then(|file| file.project_entry_id());
2754                        let worktree = file.map(|file| file.worktree.read(cx).snapshot());
2755                        let is_new = new_entries.contains(&excerpt_id)
2756                            || !outline_panel.excerpts.contains_key(&buffer_id);
2757                        let is_folded = active_editor.read(cx).is_buffer_folded(buffer_id, cx);
2758                        let status = git_store
2759                            .read(cx)
2760                            .repository_and_path_for_buffer_id(buffer_id, cx)
2761                            .and_then(|(repo, path)| {
2762                                Some(repo.read(cx).status_for_path(&path)?.status)
2763                            });
2764                        buffer_excerpts
2765                            .entry(buffer_id)
2766                            .or_insert_with(|| {
2767                                (is_new, is_folded, Vec::new(), entry_id, worktree, status)
2768                            })
2769                            .2
2770                            .push(excerpt_id);
2771
2772                        let outlines = match outline_panel
2773                            .excerpts
2774                            .get(&buffer_id)
2775                            .and_then(|excerpts| excerpts.get(&excerpt_id))
2776                        {
2777                            Some(old_excerpt) => match &old_excerpt.outlines {
2778                                ExcerptOutlines::Outlines(outlines) => {
2779                                    ExcerptOutlines::Outlines(outlines.clone())
2780                                }
2781                                ExcerptOutlines::Invalidated(_) => ExcerptOutlines::NotFetched,
2782                                ExcerptOutlines::NotFetched => ExcerptOutlines::NotFetched,
2783                            },
2784                            None => ExcerptOutlines::NotFetched,
2785                        };
2786                        new_excerpts.entry(buffer_id).or_default().insert(
2787                            excerpt_id,
2788                            Excerpt {
2789                                range: excerpt_range,
2790                                outlines,
2791                            },
2792                        );
2793                        buffer_excerpts
2794                    },
2795                )
2796            }) else {
2797                return;
2798            };
2799
2800            let Some((
2801                new_collapsed_entries,
2802                new_unfolded_dirs,
2803                new_fs_entries,
2804                new_depth_map,
2805                new_children_count,
2806            )) = cx
2807                .background_spawn(async move {
2808                    let mut processed_external_buffers = HashSet::default();
2809                    let mut new_worktree_entries =
2810                        BTreeMap::<WorktreeId, HashMap<ProjectEntryId, GitEntry>>::default();
2811                    let mut worktree_excerpts = HashMap::<
2812                        WorktreeId,
2813                        HashMap<ProjectEntryId, (BufferId, Vec<ExcerptId>)>,
2814                    >::default();
2815                    let mut external_excerpts = HashMap::default();
2816
2817                    for (buffer_id, (is_new, is_folded, excerpts, entry_id, worktree, status)) in
2818                        buffer_excerpts
2819                    {
2820                        if is_folded {
2821                            match &worktree {
2822                                Some(worktree) => {
2823                                    new_collapsed_entries
2824                                        .insert(CollapsedEntry::File(worktree.id(), buffer_id));
2825                                }
2826                                None => {
2827                                    new_collapsed_entries
2828                                        .insert(CollapsedEntry::ExternalFile(buffer_id));
2829                                }
2830                            }
2831                        } else if is_new {
2832                            match &worktree {
2833                                Some(worktree) => {
2834                                    new_collapsed_entries
2835                                        .remove(&CollapsedEntry::File(worktree.id(), buffer_id));
2836                                }
2837                                None => {
2838                                    new_collapsed_entries
2839                                        .remove(&CollapsedEntry::ExternalFile(buffer_id));
2840                                }
2841                            }
2842                        }
2843
2844                        if let Some(worktree) = worktree {
2845                            let worktree_id = worktree.id();
2846                            let unfolded_dirs = new_unfolded_dirs.entry(worktree_id).or_default();
2847
2848                            match entry_id.and_then(|id| worktree.entry_for_id(id)).cloned() {
2849                                Some(entry) => {
2850                                    let entry = GitEntry {
2851                                        git_summary: status
2852                                            .map(|status| status.summary())
2853                                            .unwrap_or_default(),
2854                                        entry,
2855                                    };
2856                                    let mut traversal = GitTraversal::new(
2857                                        &repo_snapshots,
2858                                        worktree.traverse_from_path(
2859                                            true,
2860                                            true,
2861                                            true,
2862                                            entry.path.as_ref(),
2863                                        ),
2864                                    );
2865
2866                                    let mut entries_to_add = HashMap::default();
2867                                    worktree_excerpts
2868                                        .entry(worktree_id)
2869                                        .or_default()
2870                                        .insert(entry.id, (buffer_id, excerpts));
2871                                    let mut current_entry = entry;
2872                                    loop {
2873                                        if current_entry.is_dir() {
2874                                            let is_root =
2875                                                worktree.root_entry().map(|entry| entry.id)
2876                                                    == Some(current_entry.id);
2877                                            if is_root {
2878                                                root_entries.insert(current_entry.id);
2879                                                if auto_fold_dirs {
2880                                                    unfolded_dirs.insert(current_entry.id);
2881                                                }
2882                                            }
2883                                            if is_new {
2884                                                new_collapsed_entries.remove(&CollapsedEntry::Dir(
2885                                                    worktree_id,
2886                                                    current_entry.id,
2887                                                ));
2888                                            }
2889                                        }
2890
2891                                        let new_entry_added = entries_to_add
2892                                            .insert(current_entry.id, current_entry)
2893                                            .is_none();
2894                                        if new_entry_added
2895                                            && traversal.back_to_parent()
2896                                            && let Some(parent_entry) = traversal.entry()
2897                                        {
2898                                            current_entry = parent_entry.to_owned();
2899                                            continue;
2900                                        }
2901                                        break;
2902                                    }
2903                                    new_worktree_entries
2904                                        .entry(worktree_id)
2905                                        .or_insert_with(HashMap::default)
2906                                        .extend(entries_to_add);
2907                                }
2908                                None => {
2909                                    if processed_external_buffers.insert(buffer_id) {
2910                                        external_excerpts
2911                                            .entry(buffer_id)
2912                                            .or_insert_with(Vec::new)
2913                                            .extend(excerpts);
2914                                    }
2915                                }
2916                            }
2917                        } else if processed_external_buffers.insert(buffer_id) {
2918                            external_excerpts
2919                                .entry(buffer_id)
2920                                .or_insert_with(Vec::new)
2921                                .extend(excerpts);
2922                        }
2923                    }
2924
2925                    let mut new_children_count =
2926                        HashMap::<WorktreeId, HashMap<Arc<RelPath>, FsChildren>>::default();
2927
2928                    let worktree_entries = new_worktree_entries
2929                        .into_iter()
2930                        .map(|(worktree_id, entries)| {
2931                            let mut entries = entries.into_values().collect::<Vec<_>>();
2932                            entries.sort_by(|a, b| a.path.as_ref().cmp(b.path.as_ref()));
2933                            (worktree_id, entries)
2934                        })
2935                        .flat_map(|(worktree_id, entries)| {
2936                            {
2937                                entries
2938                                    .into_iter()
2939                                    .filter_map(|entry| {
2940                                        if auto_fold_dirs && let Some(parent) = entry.path.parent()
2941                                        {
2942                                            let children = new_children_count
2943                                                .entry(worktree_id)
2944                                                .or_default()
2945                                                .entry(Arc::from(parent))
2946                                                .or_default();
2947                                            if entry.is_dir() {
2948                                                children.dirs += 1;
2949                                            } else {
2950                                                children.files += 1;
2951                                            }
2952                                        }
2953
2954                                        if entry.is_dir() {
2955                                            Some(FsEntry::Directory(FsEntryDirectory {
2956                                                worktree_id,
2957                                                entry,
2958                                            }))
2959                                        } else {
2960                                            let (buffer_id, excerpts) = worktree_excerpts
2961                                                .get_mut(&worktree_id)
2962                                                .and_then(|worktree_excerpts| {
2963                                                    worktree_excerpts.remove(&entry.id)
2964                                                })?;
2965                                            Some(FsEntry::File(FsEntryFile {
2966                                                worktree_id,
2967                                                buffer_id,
2968                                                entry,
2969                                                excerpts,
2970                                            }))
2971                                        }
2972                                    })
2973                                    .collect::<Vec<_>>()
2974                            }
2975                        })
2976                        .collect::<Vec<_>>();
2977
2978                    let mut visited_dirs = Vec::new();
2979                    let mut new_depth_map = HashMap::default();
2980                    let new_visible_entries = external_excerpts
2981                        .into_iter()
2982                        .sorted_by_key(|(id, _)| *id)
2983                        .map(|(buffer_id, excerpts)| {
2984                            FsEntry::ExternalFile(FsEntryExternalFile {
2985                                buffer_id,
2986                                excerpts,
2987                            })
2988                        })
2989                        .chain(worktree_entries)
2990                        .filter(|visible_item| {
2991                            match visible_item {
2992                                FsEntry::Directory(directory) => {
2993                                    let parent_id = back_to_common_visited_parent(
2994                                        &mut visited_dirs,
2995                                        &directory.worktree_id,
2996                                        &directory.entry,
2997                                    );
2998
2999                                    let mut depth = 0;
3000                                    if !root_entries.contains(&directory.entry.id) {
3001                                        if auto_fold_dirs {
3002                                            let children = new_children_count
3003                                                .get(&directory.worktree_id)
3004                                                .and_then(|children_count| {
3005                                                    children_count.get(&directory.entry.path)
3006                                                })
3007                                                .copied()
3008                                                .unwrap_or_default();
3009
3010                                            if !children.may_be_fold_part()
3011                                                || (children.dirs == 0
3012                                                    && visited_dirs
3013                                                        .last()
3014                                                        .map(|(parent_dir_id, _)| {
3015                                                            new_unfolded_dirs
3016                                                                .get(&directory.worktree_id)
3017                                                                .is_none_or(|unfolded_dirs| {
3018                                                                    unfolded_dirs
3019                                                                        .contains(parent_dir_id)
3020                                                                })
3021                                                        })
3022                                                        .unwrap_or(true))
3023                                            {
3024                                                new_unfolded_dirs
3025                                                    .entry(directory.worktree_id)
3026                                                    .or_default()
3027                                                    .insert(directory.entry.id);
3028                                            }
3029                                        }
3030
3031                                        depth = parent_id
3032                                            .and_then(|(worktree_id, id)| {
3033                                                new_depth_map.get(&(worktree_id, id)).copied()
3034                                            })
3035                                            .unwrap_or(0)
3036                                            + 1;
3037                                    };
3038                                    visited_dirs
3039                                        .push((directory.entry.id, directory.entry.path.clone()));
3040                                    new_depth_map
3041                                        .insert((directory.worktree_id, directory.entry.id), depth);
3042                                }
3043                                FsEntry::File(FsEntryFile {
3044                                    worktree_id,
3045                                    entry: file_entry,
3046                                    ..
3047                                }) => {
3048                                    let parent_id = back_to_common_visited_parent(
3049                                        &mut visited_dirs,
3050                                        worktree_id,
3051                                        file_entry,
3052                                    );
3053                                    let depth = if root_entries.contains(&file_entry.id) {
3054                                        0
3055                                    } else {
3056                                        parent_id
3057                                            .and_then(|(worktree_id, id)| {
3058                                                new_depth_map.get(&(worktree_id, id)).copied()
3059                                            })
3060                                            .unwrap_or(0)
3061                                            + 1
3062                                    };
3063                                    new_depth_map.insert((*worktree_id, file_entry.id), depth);
3064                                }
3065                                FsEntry::ExternalFile(..) => {
3066                                    visited_dirs.clear();
3067                                }
3068                            }
3069
3070                            true
3071                        })
3072                        .collect::<Vec<_>>();
3073
3074                    anyhow::Ok((
3075                        new_collapsed_entries,
3076                        new_unfolded_dirs,
3077                        new_visible_entries,
3078                        new_depth_map,
3079                        new_children_count,
3080                    ))
3081                })
3082                .await
3083                .log_err()
3084            else {
3085                return;
3086            };
3087
3088            outline_panel
3089                .update_in(cx, |outline_panel, window, cx| {
3090                    outline_panel.new_entries_for_fs_update.clear();
3091                    outline_panel.excerpts = new_excerpts;
3092                    outline_panel.collapsed_entries = new_collapsed_entries;
3093                    outline_panel.unfolded_dirs = new_unfolded_dirs;
3094                    outline_panel.fs_entries = new_fs_entries;
3095                    outline_panel.fs_entries_depth = new_depth_map;
3096                    outline_panel.fs_children_count = new_children_count;
3097                    outline_panel.update_non_fs_items(window, cx);
3098
3099                    // Only update cached entries if we don't have outlines to fetch
3100                    // If we do have outlines to fetch, let fetch_outdated_outlines handle the update
3101                    if outline_panel.excerpt_fetch_ranges(cx).is_empty() {
3102                        outline_panel.update_cached_entries(debounce, window, cx);
3103                    }
3104
3105                    cx.notify();
3106                })
3107                .ok();
3108        });
3109    }
3110
3111    fn replace_active_editor(
3112        &mut self,
3113        new_active_item: Box<dyn ItemHandle>,
3114        new_active_editor: Entity<Editor>,
3115        window: &mut Window,
3116        cx: &mut Context<Self>,
3117    ) {
3118        self.clear_previous(window, cx);
3119
3120        let default_expansion_depth =
3121            OutlinePanelSettings::get_global(cx).expand_outlines_with_depth;
3122        // We'll apply the expansion depth after outlines are loaded
3123        self.pending_default_expansion_depth = Some(default_expansion_depth);
3124
3125        let buffer_search_subscription = cx.subscribe_in(
3126            &new_active_editor,
3127            window,
3128            |outline_panel: &mut Self,
3129             _,
3130             e: &SearchEvent,
3131             window: &mut Window,
3132             cx: &mut Context<Self>| {
3133                if matches!(e, SearchEvent::MatchesInvalidated) {
3134                    let update_cached_items = outline_panel.update_search_matches(window, cx);
3135                    if update_cached_items {
3136                        outline_panel.selected_entry.invalidate();
3137                        outline_panel.update_cached_entries(Some(UPDATE_DEBOUNCE), window, cx);
3138                    }
3139                };
3140                outline_panel.autoscroll(cx);
3141            },
3142        );
3143        self.active_item = Some(ActiveItem {
3144            _buffer_search_subscription: buffer_search_subscription,
3145            _editor_subscription: subscribe_for_editor_events(&new_active_editor, window, cx),
3146            item_handle: new_active_item.downgrade_item(),
3147            active_editor: new_active_editor.downgrade(),
3148        });
3149        self.new_entries_for_fs_update
3150            .extend(new_active_editor.read(cx).buffer().read(cx).excerpt_ids());
3151        self.selected_entry.invalidate();
3152        self.update_fs_entries(new_active_editor, None, window, cx);
3153    }
3154
3155    fn clear_previous(&mut self, window: &mut Window, cx: &mut App) {
3156        self.fs_entries_update_task = Task::ready(());
3157        self.outline_fetch_tasks.clear();
3158        self.cached_entries_update_task = Task::ready(());
3159        self.reveal_selection_task = Task::ready(Ok(()));
3160        self.filter_editor
3161            .update(cx, |editor, cx| editor.clear(window, cx));
3162        self.collapsed_entries.clear();
3163        self.unfolded_dirs.clear();
3164        self.active_item = None;
3165        self.fs_entries.clear();
3166        self.fs_entries_depth.clear();
3167        self.fs_children_count.clear();
3168        self.excerpts.clear();
3169        self.cached_entries = Vec::new();
3170        self.selected_entry = SelectedEntry::None;
3171        self.pinned = false;
3172        self.mode = ItemsDisplayMode::Outline;
3173        self.pending_default_expansion_depth = None;
3174    }
3175
3176    fn location_for_editor_selection(
3177        &self,
3178        editor: &Entity<Editor>,
3179        window: &mut Window,
3180        cx: &mut Context<Self>,
3181    ) -> Option<PanelEntry> {
3182        let selection = editor.update(cx, |editor, cx| {
3183            editor
3184                .selections
3185                .newest::<language::Point>(&editor.display_snapshot(cx))
3186                .head()
3187        });
3188        let editor_snapshot = editor.update(cx, |editor, cx| editor.snapshot(window, cx));
3189        let multi_buffer = editor.read(cx).buffer();
3190        let multi_buffer_snapshot = multi_buffer.read(cx).snapshot(cx);
3191        let (excerpt_id, buffer, _) = editor
3192            .read(cx)
3193            .buffer()
3194            .read(cx)
3195            .excerpt_containing(selection, cx)?;
3196        let buffer_id = buffer.read(cx).remote_id();
3197
3198        if editor.read(cx).is_buffer_folded(buffer_id, cx) {
3199            return self
3200                .fs_entries
3201                .iter()
3202                .find(|fs_entry| match fs_entry {
3203                    FsEntry::Directory(..) => false,
3204                    FsEntry::File(FsEntryFile {
3205                        buffer_id: other_buffer_id,
3206                        ..
3207                    })
3208                    | FsEntry::ExternalFile(FsEntryExternalFile {
3209                        buffer_id: other_buffer_id,
3210                        ..
3211                    }) => buffer_id == *other_buffer_id,
3212                })
3213                .cloned()
3214                .map(PanelEntry::Fs);
3215        }
3216
3217        let selection_display_point = selection.to_display_point(&editor_snapshot);
3218
3219        match &self.mode {
3220            ItemsDisplayMode::Search(search_state) => search_state
3221                .matches
3222                .iter()
3223                .rev()
3224                .min_by_key(|&(match_range, _)| {
3225                    let match_display_range =
3226                        match_range.clone().to_display_points(&editor_snapshot);
3227                    let start_distance = if selection_display_point < match_display_range.start {
3228                        match_display_range.start - selection_display_point
3229                    } else {
3230                        selection_display_point - match_display_range.start
3231                    };
3232                    let end_distance = if selection_display_point < match_display_range.end {
3233                        match_display_range.end - selection_display_point
3234                    } else {
3235                        selection_display_point - match_display_range.end
3236                    };
3237                    start_distance + end_distance
3238                })
3239                .and_then(|(closest_range, _)| {
3240                    self.cached_entries.iter().find_map(|cached_entry| {
3241                        if let PanelEntry::Search(SearchEntry { match_range, .. }) =
3242                            &cached_entry.entry
3243                        {
3244                            if match_range == closest_range {
3245                                Some(cached_entry.entry.clone())
3246                            } else {
3247                                None
3248                            }
3249                        } else {
3250                            None
3251                        }
3252                    })
3253                }),
3254            ItemsDisplayMode::Outline => self.outline_location(
3255                buffer_id,
3256                excerpt_id,
3257                multi_buffer_snapshot,
3258                editor_snapshot,
3259                selection_display_point,
3260            ),
3261        }
3262    }
3263
3264    fn outline_location(
3265        &self,
3266        buffer_id: BufferId,
3267        excerpt_id: ExcerptId,
3268        multi_buffer_snapshot: editor::MultiBufferSnapshot,
3269        editor_snapshot: editor::EditorSnapshot,
3270        selection_display_point: DisplayPoint,
3271    ) -> Option<PanelEntry> {
3272        let excerpt_outlines = self
3273            .excerpts
3274            .get(&buffer_id)
3275            .and_then(|excerpts| excerpts.get(&excerpt_id))
3276            .into_iter()
3277            .flat_map(|excerpt| excerpt.iter_outlines())
3278            .flat_map(|outline| {
3279                let range = multi_buffer_snapshot
3280                    .anchor_range_in_excerpt(excerpt_id, outline.range.clone())?;
3281                Some((
3282                    range.start.to_display_point(&editor_snapshot)
3283                        ..range.end.to_display_point(&editor_snapshot),
3284                    outline,
3285                ))
3286            })
3287            .collect::<Vec<_>>();
3288
3289        let mut matching_outline_indices = Vec::new();
3290        let mut children = HashMap::default();
3291        let mut parents_stack = Vec::<(&Range<DisplayPoint>, &&Outline, usize)>::new();
3292
3293        for (i, (outline_range, outline)) in excerpt_outlines.iter().enumerate() {
3294            if outline_range
3295                .to_inclusive()
3296                .contains(&selection_display_point)
3297            {
3298                matching_outline_indices.push(i);
3299            } else if (outline_range.start.row()..outline_range.end.row())
3300                .to_inclusive()
3301                .contains(&selection_display_point.row())
3302            {
3303                matching_outline_indices.push(i);
3304            }
3305
3306            while let Some((parent_range, parent_outline, _)) = parents_stack.last() {
3307                if parent_outline.depth >= outline.depth
3308                    || !parent_range.contains(&outline_range.start)
3309                {
3310                    parents_stack.pop();
3311                } else {
3312                    break;
3313                }
3314            }
3315            if let Some((_, _, parent_index)) = parents_stack.last_mut() {
3316                children
3317                    .entry(*parent_index)
3318                    .or_insert_with(Vec::new)
3319                    .push(i);
3320            }
3321            parents_stack.push((outline_range, outline, i));
3322        }
3323
3324        let outline_item = matching_outline_indices
3325            .into_iter()
3326            .flat_map(|i| Some((i, excerpt_outlines.get(i)?)))
3327            .filter(|(i, _)| {
3328                children
3329                    .get(i)
3330                    .map(|children| {
3331                        children.iter().all(|child_index| {
3332                            excerpt_outlines
3333                                .get(*child_index)
3334                                .map(|(child_range, _)| child_range.start > selection_display_point)
3335                                .unwrap_or(false)
3336                        })
3337                    })
3338                    .unwrap_or(true)
3339            })
3340            .min_by_key(|(_, (outline_range, outline))| {
3341                let distance_from_start = if outline_range.start > selection_display_point {
3342                    outline_range.start - selection_display_point
3343                } else {
3344                    selection_display_point - outline_range.start
3345                };
3346                let distance_from_end = if outline_range.end > selection_display_point {
3347                    outline_range.end - selection_display_point
3348                } else {
3349                    selection_display_point - outline_range.end
3350                };
3351
3352                (
3353                    cmp::Reverse(outline.depth),
3354                    distance_from_start + distance_from_end,
3355                )
3356            })
3357            .map(|(_, (_, outline))| *outline)
3358            .cloned();
3359
3360        let closest_container = match outline_item {
3361            Some(outline) => PanelEntry::Outline(OutlineEntry::Outline(OutlineEntryOutline {
3362                buffer_id,
3363                excerpt_id,
3364                outline,
3365            })),
3366            None => {
3367                self.cached_entries.iter().rev().find_map(|cached_entry| {
3368                    match &cached_entry.entry {
3369                        PanelEntry::Outline(OutlineEntry::Excerpt(excerpt)) => {
3370                            if excerpt.buffer_id == buffer_id && excerpt.id == excerpt_id {
3371                                Some(cached_entry.entry.clone())
3372                            } else {
3373                                None
3374                            }
3375                        }
3376                        PanelEntry::Fs(
3377                            FsEntry::ExternalFile(FsEntryExternalFile {
3378                                buffer_id: file_buffer_id,
3379                                excerpts: file_excerpts,
3380                            })
3381                            | FsEntry::File(FsEntryFile {
3382                                buffer_id: file_buffer_id,
3383                                excerpts: file_excerpts,
3384                                ..
3385                            }),
3386                        ) => {
3387                            if file_buffer_id == &buffer_id && file_excerpts.contains(&excerpt_id) {
3388                                Some(cached_entry.entry.clone())
3389                            } else {
3390                                None
3391                            }
3392                        }
3393                        _ => None,
3394                    }
3395                })?
3396            }
3397        };
3398        Some(closest_container)
3399    }
3400
3401    fn fetch_outdated_outlines(&mut self, window: &mut Window, cx: &mut Context<Self>) {
3402        let excerpt_fetch_ranges = self.excerpt_fetch_ranges(cx);
3403        if excerpt_fetch_ranges.is_empty() {
3404            return;
3405        }
3406
3407        let syntax_theme = cx.theme().syntax().clone();
3408        let first_update = Arc::new(AtomicBool::new(true));
3409        for (buffer_id, (buffer_snapshot, excerpt_ranges)) in excerpt_fetch_ranges {
3410            for (excerpt_id, excerpt_range) in excerpt_ranges {
3411                let syntax_theme = syntax_theme.clone();
3412                let buffer_snapshot = buffer_snapshot.clone();
3413                let first_update = first_update.clone();
3414                self.outline_fetch_tasks.insert(
3415                    (buffer_id, excerpt_id),
3416                    cx.spawn_in(window, async move |outline_panel, cx| {
3417                        let buffer_language = buffer_snapshot.language().cloned();
3418                        let fetched_outlines = cx
3419                            .background_spawn(async move {
3420                                let mut outlines = buffer_snapshot.outline_items_containing(
3421                                    excerpt_range.context,
3422                                    false,
3423                                    Some(&syntax_theme),
3424                                );
3425                                outlines.retain(|outline| {
3426                                    buffer_language.is_none()
3427                                        || buffer_language.as_ref()
3428                                            == buffer_snapshot.language_at(outline.range.start)
3429                                });
3430
3431                                let outlines_with_children = outlines
3432                                    .windows(2)
3433                                    .filter_map(|window| {
3434                                        let current = &window[0];
3435                                        let next = &window[1];
3436                                        if next.depth > current.depth {
3437                                            Some((current.range.clone(), current.depth))
3438                                        } else {
3439                                            None
3440                                        }
3441                                    })
3442                                    .collect::<HashSet<_>>();
3443
3444                                (outlines, outlines_with_children)
3445                            })
3446                            .await;
3447
3448                        let (fetched_outlines, outlines_with_children) = fetched_outlines;
3449
3450                        outline_panel
3451                            .update_in(cx, |outline_panel, window, cx| {
3452                                let pending_default_depth =
3453                                    outline_panel.pending_default_expansion_depth.take();
3454
3455                                let debounce =
3456                                    if first_update.fetch_and(false, atomic::Ordering::AcqRel) {
3457                                        None
3458                                    } else {
3459                                        Some(UPDATE_DEBOUNCE)
3460                                    };
3461
3462                                if let Some(excerpt) = outline_panel
3463                                    .excerpts
3464                                    .entry(buffer_id)
3465                                    .or_default()
3466                                    .get_mut(&excerpt_id)
3467                                {
3468                                    excerpt.outlines = ExcerptOutlines::Outlines(fetched_outlines);
3469
3470                                    if let Some(default_depth) = pending_default_depth
3471                                        && let ExcerptOutlines::Outlines(outlines) =
3472                                            &excerpt.outlines
3473                                    {
3474                                        outlines
3475                                            .iter()
3476                                            .filter(|outline| {
3477                                                (default_depth == 0
3478                                                    || outline.depth >= default_depth)
3479                                                    && outlines_with_children.contains(&(
3480                                                        outline.range.clone(),
3481                                                        outline.depth,
3482                                                    ))
3483                                            })
3484                                            .for_each(|outline| {
3485                                                outline_panel.collapsed_entries.insert(
3486                                                    CollapsedEntry::Outline(
3487                                                        buffer_id,
3488                                                        excerpt_id,
3489                                                        outline.range.clone(),
3490                                                    ),
3491                                                );
3492                                            });
3493                                    }
3494
3495                                    // Even if no outlines to check, we still need to update cached entries
3496                                    // to show the outline entries that were just fetched
3497                                    outline_panel.update_cached_entries(debounce, window, cx);
3498                                }
3499                            })
3500                            .ok();
3501                    }),
3502                );
3503            }
3504        }
3505    }
3506
3507    fn is_singleton_active(&self, cx: &App) -> bool {
3508        self.active_editor()
3509            .is_some_and(|active_editor| active_editor.read(cx).buffer().read(cx).is_singleton())
3510    }
3511
3512    fn invalidate_outlines(&mut self, ids: &[ExcerptId]) {
3513        self.outline_fetch_tasks.clear();
3514        let mut ids = ids.iter().collect::<HashSet<_>>();
3515        for excerpts in self.excerpts.values_mut() {
3516            ids.retain(|id| {
3517                if let Some(excerpt) = excerpts.get_mut(id) {
3518                    excerpt.invalidate_outlines();
3519                    false
3520                } else {
3521                    true
3522                }
3523            });
3524            if ids.is_empty() {
3525                break;
3526            }
3527        }
3528    }
3529
3530    fn excerpt_fetch_ranges(
3531        &self,
3532        cx: &App,
3533    ) -> HashMap<
3534        BufferId,
3535        (
3536            BufferSnapshot,
3537            HashMap<ExcerptId, ExcerptRange<language::Anchor>>,
3538        ),
3539    > {
3540        self.fs_entries
3541            .iter()
3542            .fold(HashMap::default(), |mut excerpts_to_fetch, fs_entry| {
3543                match fs_entry {
3544                    FsEntry::File(FsEntryFile {
3545                        buffer_id,
3546                        excerpts: file_excerpts,
3547                        ..
3548                    })
3549                    | FsEntry::ExternalFile(FsEntryExternalFile {
3550                        buffer_id,
3551                        excerpts: file_excerpts,
3552                    }) => {
3553                        let excerpts = self.excerpts.get(buffer_id);
3554                        for &file_excerpt in file_excerpts {
3555                            if let Some(excerpt) = excerpts
3556                                .and_then(|excerpts| excerpts.get(&file_excerpt))
3557                                .filter(|excerpt| excerpt.should_fetch_outlines())
3558                            {
3559                                match excerpts_to_fetch.entry(*buffer_id) {
3560                                    hash_map::Entry::Occupied(mut o) => {
3561                                        o.get_mut().1.insert(file_excerpt, excerpt.range.clone());
3562                                    }
3563                                    hash_map::Entry::Vacant(v) => {
3564                                        if let Some(buffer_snapshot) =
3565                                            self.buffer_snapshot_for_id(*buffer_id, cx)
3566                                        {
3567                                            v.insert((buffer_snapshot, HashMap::default()))
3568                                                .1
3569                                                .insert(file_excerpt, excerpt.range.clone());
3570                                        }
3571                                    }
3572                                }
3573                            }
3574                        }
3575                    }
3576                    FsEntry::Directory(..) => {}
3577                }
3578                excerpts_to_fetch
3579            })
3580    }
3581
3582    fn buffer_snapshot_for_id(&self, buffer_id: BufferId, cx: &App) -> Option<BufferSnapshot> {
3583        let editor = self.active_editor()?;
3584        Some(
3585            editor
3586                .read(cx)
3587                .buffer()
3588                .read(cx)
3589                .buffer(buffer_id)?
3590                .read(cx)
3591                .snapshot(),
3592        )
3593    }
3594
3595    fn abs_path(&self, entry: &PanelEntry, cx: &App) -> Option<PathBuf> {
3596        match entry {
3597            PanelEntry::Fs(
3598                FsEntry::File(FsEntryFile { buffer_id, .. })
3599                | FsEntry::ExternalFile(FsEntryExternalFile { buffer_id, .. }),
3600            ) => self
3601                .buffer_snapshot_for_id(*buffer_id, cx)
3602                .and_then(|buffer_snapshot| {
3603                    let file = File::from_dyn(buffer_snapshot.file())?;
3604                    Some(file.worktree.read(cx).absolutize(&file.path))
3605                }),
3606            PanelEntry::Fs(FsEntry::Directory(FsEntryDirectory {
3607                worktree_id, entry, ..
3608            })) => Some(
3609                self.project
3610                    .read(cx)
3611                    .worktree_for_id(*worktree_id, cx)?
3612                    .read(cx)
3613                    .absolutize(&entry.path),
3614            ),
3615            PanelEntry::FoldedDirs(FoldedDirsEntry {
3616                worktree_id,
3617                entries: dirs,
3618                ..
3619            }) => dirs.last().and_then(|entry| {
3620                self.project
3621                    .read(cx)
3622                    .worktree_for_id(*worktree_id, cx)
3623                    .map(|worktree| worktree.read(cx).absolutize(&entry.path))
3624            }),
3625            PanelEntry::Search(_) | PanelEntry::Outline(..) => None,
3626        }
3627    }
3628
3629    fn relative_path(&self, entry: &FsEntry, cx: &App) -> Option<Arc<RelPath>> {
3630        match entry {
3631            FsEntry::ExternalFile(FsEntryExternalFile { buffer_id, .. }) => {
3632                let buffer_snapshot = self.buffer_snapshot_for_id(*buffer_id, cx)?;
3633                Some(buffer_snapshot.file()?.path().clone())
3634            }
3635            FsEntry::Directory(FsEntryDirectory { entry, .. }) => Some(entry.path.clone()),
3636            FsEntry::File(FsEntryFile { entry, .. }) => Some(entry.path.clone()),
3637        }
3638    }
3639
3640    fn update_cached_entries(
3641        &mut self,
3642        debounce: Option<Duration>,
3643        window: &mut Window,
3644        cx: &mut Context<OutlinePanel>,
3645    ) {
3646        if !self.active {
3647            return;
3648        }
3649
3650        let is_singleton = self.is_singleton_active(cx);
3651        let query = self.query(cx);
3652        self.cached_entries_update_task = cx.spawn_in(window, async move |outline_panel, cx| {
3653            if let Some(debounce) = debounce {
3654                cx.background_executor().timer(debounce).await;
3655            }
3656            let Some(new_cached_entries) = outline_panel
3657                .update_in(cx, |outline_panel, window, cx| {
3658                    outline_panel.generate_cached_entries(is_singleton, query, window, cx)
3659                })
3660                .ok()
3661            else {
3662                return;
3663            };
3664            let (new_cached_entries, max_width_item_index) = new_cached_entries.await;
3665            outline_panel
3666                .update_in(cx, |outline_panel, window, cx| {
3667                    outline_panel.cached_entries = new_cached_entries;
3668                    outline_panel.max_width_item_index = max_width_item_index;
3669                    if (outline_panel.selected_entry.is_invalidated()
3670                        || matches!(outline_panel.selected_entry, SelectedEntry::None))
3671                        && let Some(new_selected_entry) =
3672                            outline_panel.active_editor().and_then(|active_editor| {
3673                                outline_panel.location_for_editor_selection(
3674                                    &active_editor,
3675                                    window,
3676                                    cx,
3677                                )
3678                            })
3679                    {
3680                        outline_panel.select_entry(new_selected_entry, false, window, cx);
3681                    }
3682
3683                    outline_panel.autoscroll(cx);
3684                    cx.notify();
3685                })
3686                .ok();
3687        });
3688    }
3689
3690    fn generate_cached_entries(
3691        &self,
3692        is_singleton: bool,
3693        query: Option<String>,
3694        window: &mut Window,
3695        cx: &mut Context<Self>,
3696    ) -> Task<(Vec<CachedEntry>, Option<usize>)> {
3697        let project = self.project.clone();
3698        let Some(active_editor) = self.active_editor() else {
3699            return Task::ready((Vec::new(), None));
3700        };
3701        cx.spawn_in(window, async move |outline_panel, cx| {
3702            let mut generation_state = GenerationState::default();
3703
3704            let Ok(()) = outline_panel.update(cx, |outline_panel, cx| {
3705                let auto_fold_dirs = OutlinePanelSettings::get_global(cx).auto_fold_dirs;
3706                let mut folded_dirs_entry = None::<(usize, FoldedDirsEntry)>;
3707                let track_matches = query.is_some();
3708
3709                #[derive(Debug)]
3710                struct ParentStats {
3711                    path: Arc<RelPath>,
3712                    folded: bool,
3713                    expanded: bool,
3714                    depth: usize,
3715                }
3716                let mut parent_dirs = Vec::<ParentStats>::new();
3717                for entry in outline_panel.fs_entries.clone() {
3718                    let is_expanded = outline_panel.is_expanded(&entry);
3719                    let (depth, should_add) = match &entry {
3720                        FsEntry::Directory(directory_entry) => {
3721                            let mut should_add = true;
3722                            let is_root = project
3723                                .read(cx)
3724                                .worktree_for_id(directory_entry.worktree_id, cx)
3725                                .is_some_and(|worktree| {
3726                                    worktree.read(cx).root_entry() == Some(&directory_entry.entry)
3727                                });
3728                            let folded = auto_fold_dirs
3729                                && !is_root
3730                                && outline_panel
3731                                    .unfolded_dirs
3732                                    .get(&directory_entry.worktree_id)
3733                                    .is_none_or(|unfolded_dirs| {
3734                                        !unfolded_dirs.contains(&directory_entry.entry.id)
3735                                    });
3736                            let fs_depth = outline_panel
3737                                .fs_entries_depth
3738                                .get(&(directory_entry.worktree_id, directory_entry.entry.id))
3739                                .copied()
3740                                .unwrap_or(0);
3741                            while let Some(parent) = parent_dirs.last() {
3742                                if !is_root && directory_entry.entry.path.starts_with(&parent.path)
3743                                {
3744                                    break;
3745                                }
3746                                parent_dirs.pop();
3747                            }
3748                            let auto_fold = match parent_dirs.last() {
3749                                Some(parent) => {
3750                                    parent.folded
3751                                        && Some(parent.path.as_ref())
3752                                            == directory_entry.entry.path.parent()
3753                                        && outline_panel
3754                                            .fs_children_count
3755                                            .get(&directory_entry.worktree_id)
3756                                            .and_then(|entries| {
3757                                                entries.get(&directory_entry.entry.path)
3758                                            })
3759                                            .copied()
3760                                            .unwrap_or_default()
3761                                            .may_be_fold_part()
3762                                }
3763                                None => false,
3764                            };
3765                            let folded = folded || auto_fold;
3766                            let (depth, parent_expanded, parent_folded) = match parent_dirs.last() {
3767                                Some(parent) => {
3768                                    let parent_folded = parent.folded;
3769                                    let parent_expanded = parent.expanded;
3770                                    let new_depth = if parent_folded {
3771                                        parent.depth
3772                                    } else {
3773                                        parent.depth + 1
3774                                    };
3775                                    parent_dirs.push(ParentStats {
3776                                        path: directory_entry.entry.path.clone(),
3777                                        folded,
3778                                        expanded: parent_expanded && is_expanded,
3779                                        depth: new_depth,
3780                                    });
3781                                    (new_depth, parent_expanded, parent_folded)
3782                                }
3783                                None => {
3784                                    parent_dirs.push(ParentStats {
3785                                        path: directory_entry.entry.path.clone(),
3786                                        folded,
3787                                        expanded: is_expanded,
3788                                        depth: fs_depth,
3789                                    });
3790                                    (fs_depth, true, false)
3791                                }
3792                            };
3793
3794                            if let Some((folded_depth, mut folded_dirs)) = folded_dirs_entry.take()
3795                            {
3796                                if folded
3797                                    && directory_entry.worktree_id == folded_dirs.worktree_id
3798                                    && directory_entry.entry.path.parent()
3799                                        == folded_dirs
3800                                            .entries
3801                                            .last()
3802                                            .map(|entry| entry.path.as_ref())
3803                                {
3804                                    folded_dirs.entries.push(directory_entry.entry.clone());
3805                                    folded_dirs_entry = Some((folded_depth, folded_dirs))
3806                                } else {
3807                                    if !is_singleton {
3808                                        let start_of_collapsed_dir_sequence = !parent_expanded
3809                                            && parent_dirs
3810                                                .iter()
3811                                                .rev()
3812                                                .nth(folded_dirs.entries.len() + 1)
3813                                                .is_none_or(|parent| parent.expanded);
3814                                        if start_of_collapsed_dir_sequence
3815                                            || parent_expanded
3816                                            || query.is_some()
3817                                        {
3818                                            if parent_folded {
3819                                                folded_dirs
3820                                                    .entries
3821                                                    .push(directory_entry.entry.clone());
3822                                                should_add = false;
3823                                            }
3824                                            let new_folded_dirs =
3825                                                PanelEntry::FoldedDirs(folded_dirs.clone());
3826                                            outline_panel.push_entry(
3827                                                &mut generation_state,
3828                                                track_matches,
3829                                                new_folded_dirs,
3830                                                folded_depth,
3831                                                cx,
3832                                            );
3833                                        }
3834                                    }
3835
3836                                    folded_dirs_entry = if parent_folded {
3837                                        None
3838                                    } else {
3839                                        Some((
3840                                            depth,
3841                                            FoldedDirsEntry {
3842                                                worktree_id: directory_entry.worktree_id,
3843                                                entries: vec![directory_entry.entry.clone()],
3844                                            },
3845                                        ))
3846                                    };
3847                                }
3848                            } else if folded {
3849                                folded_dirs_entry = Some((
3850                                    depth,
3851                                    FoldedDirsEntry {
3852                                        worktree_id: directory_entry.worktree_id,
3853                                        entries: vec![directory_entry.entry.clone()],
3854                                    },
3855                                ));
3856                            }
3857
3858                            let should_add =
3859                                should_add && parent_expanded && folded_dirs_entry.is_none();
3860                            (depth, should_add)
3861                        }
3862                        FsEntry::ExternalFile(..) => {
3863                            if let Some((folded_depth, folded_dir)) = folded_dirs_entry.take() {
3864                                let parent_expanded = parent_dirs
3865                                    .iter()
3866                                    .rev()
3867                                    .find(|parent| {
3868                                        folded_dir
3869                                            .entries
3870                                            .iter()
3871                                            .all(|entry| entry.path != parent.path)
3872                                    })
3873                                    .is_none_or(|parent| parent.expanded);
3874                                if !is_singleton && (parent_expanded || query.is_some()) {
3875                                    outline_panel.push_entry(
3876                                        &mut generation_state,
3877                                        track_matches,
3878                                        PanelEntry::FoldedDirs(folded_dir),
3879                                        folded_depth,
3880                                        cx,
3881                                    );
3882                                }
3883                            }
3884                            parent_dirs.clear();
3885                            (0, true)
3886                        }
3887                        FsEntry::File(file) => {
3888                            if let Some((folded_depth, folded_dirs)) = folded_dirs_entry.take() {
3889                                let parent_expanded = parent_dirs
3890                                    .iter()
3891                                    .rev()
3892                                    .find(|parent| {
3893                                        folded_dirs
3894                                            .entries
3895                                            .iter()
3896                                            .all(|entry| entry.path != parent.path)
3897                                    })
3898                                    .is_none_or(|parent| parent.expanded);
3899                                if !is_singleton && (parent_expanded || query.is_some()) {
3900                                    outline_panel.push_entry(
3901                                        &mut generation_state,
3902                                        track_matches,
3903                                        PanelEntry::FoldedDirs(folded_dirs),
3904                                        folded_depth,
3905                                        cx,
3906                                    );
3907                                }
3908                            }
3909
3910                            let fs_depth = outline_panel
3911                                .fs_entries_depth
3912                                .get(&(file.worktree_id, file.entry.id))
3913                                .copied()
3914                                .unwrap_or(0);
3915                            while let Some(parent) = parent_dirs.last() {
3916                                if file.entry.path.starts_with(&parent.path) {
3917                                    break;
3918                                }
3919                                parent_dirs.pop();
3920                            }
3921                            match parent_dirs.last() {
3922                                Some(parent) => {
3923                                    let new_depth = parent.depth + 1;
3924                                    (new_depth, parent.expanded)
3925                                }
3926                                None => (fs_depth, true),
3927                            }
3928                        }
3929                    };
3930
3931                    if !is_singleton
3932                        && (should_add || (query.is_some() && folded_dirs_entry.is_none()))
3933                    {
3934                        outline_panel.push_entry(
3935                            &mut generation_state,
3936                            track_matches,
3937                            PanelEntry::Fs(entry.clone()),
3938                            depth,
3939                            cx,
3940                        );
3941                    }
3942
3943                    match outline_panel.mode {
3944                        ItemsDisplayMode::Search(_) => {
3945                            if is_singleton || query.is_some() || (should_add && is_expanded) {
3946                                outline_panel.add_search_entries(
3947                                    &mut generation_state,
3948                                    &active_editor,
3949                                    entry.clone(),
3950                                    depth,
3951                                    query.clone(),
3952                                    is_singleton,
3953                                    cx,
3954                                );
3955                            }
3956                        }
3957                        ItemsDisplayMode::Outline => {
3958                            let excerpts_to_consider =
3959                                if is_singleton || query.is_some() || (should_add && is_expanded) {
3960                                    match &entry {
3961                                        FsEntry::File(FsEntryFile {
3962                                            buffer_id,
3963                                            excerpts,
3964                                            ..
3965                                        })
3966                                        | FsEntry::ExternalFile(FsEntryExternalFile {
3967                                            buffer_id,
3968                                            excerpts,
3969                                            ..
3970                                        }) => Some((*buffer_id, excerpts)),
3971                                        _ => None,
3972                                    }
3973                                } else {
3974                                    None
3975                                };
3976                            if let Some((buffer_id, entry_excerpts)) = excerpts_to_consider
3977                                && !active_editor.read(cx).is_buffer_folded(buffer_id, cx)
3978                            {
3979                                outline_panel.add_excerpt_entries(
3980                                    &mut generation_state,
3981                                    buffer_id,
3982                                    entry_excerpts,
3983                                    depth,
3984                                    track_matches,
3985                                    is_singleton,
3986                                    query.as_deref(),
3987                                    cx,
3988                                );
3989                            }
3990                        }
3991                    }
3992
3993                    if is_singleton
3994                        && matches!(entry, FsEntry::File(..) | FsEntry::ExternalFile(..))
3995                        && !generation_state.entries.iter().any(|item| {
3996                            matches!(item.entry, PanelEntry::Outline(..) | PanelEntry::Search(_))
3997                        })
3998                    {
3999                        outline_panel.push_entry(
4000                            &mut generation_state,
4001                            track_matches,
4002                            PanelEntry::Fs(entry.clone()),
4003                            0,
4004                            cx,
4005                        );
4006                    }
4007                }
4008
4009                if let Some((folded_depth, folded_dirs)) = folded_dirs_entry.take() {
4010                    let parent_expanded = parent_dirs
4011                        .iter()
4012                        .rev()
4013                        .find(|parent| {
4014                            folded_dirs
4015                                .entries
4016                                .iter()
4017                                .all(|entry| entry.path != parent.path)
4018                        })
4019                        .is_none_or(|parent| parent.expanded);
4020                    if parent_expanded || query.is_some() {
4021                        outline_panel.push_entry(
4022                            &mut generation_state,
4023                            track_matches,
4024                            PanelEntry::FoldedDirs(folded_dirs),
4025                            folded_depth,
4026                            cx,
4027                        );
4028                    }
4029                }
4030            }) else {
4031                return (Vec::new(), None);
4032            };
4033
4034            let Some(query) = query else {
4035                return (
4036                    generation_state.entries,
4037                    generation_state
4038                        .max_width_estimate_and_index
4039                        .map(|(_, index)| index),
4040                );
4041            };
4042
4043            let mut matched_ids = match_strings(
4044                &generation_state.match_candidates,
4045                &query,
4046                true,
4047                true,
4048                usize::MAX,
4049                &AtomicBool::default(),
4050                cx.background_executor().clone(),
4051            )
4052            .await
4053            .into_iter()
4054            .map(|string_match| (string_match.candidate_id, string_match))
4055            .collect::<HashMap<_, _>>();
4056
4057            let mut id = 0;
4058            generation_state.entries.retain_mut(|cached_entry| {
4059                let retain = match matched_ids.remove(&id) {
4060                    Some(string_match) => {
4061                        cached_entry.string_match = Some(string_match);
4062                        true
4063                    }
4064                    None => false,
4065                };
4066                id += 1;
4067                retain
4068            });
4069
4070            (
4071                generation_state.entries,
4072                generation_state
4073                    .max_width_estimate_and_index
4074                    .map(|(_, index)| index),
4075            )
4076        })
4077    }
4078
4079    fn push_entry(
4080        &self,
4081        state: &mut GenerationState,
4082        track_matches: bool,
4083        entry: PanelEntry,
4084        depth: usize,
4085        cx: &mut App,
4086    ) {
4087        let entry = if let PanelEntry::FoldedDirs(folded_dirs_entry) = &entry {
4088            match folded_dirs_entry.entries.len() {
4089                0 => {
4090                    debug_panic!("Empty folded dirs receiver");
4091                    return;
4092                }
4093                1 => PanelEntry::Fs(FsEntry::Directory(FsEntryDirectory {
4094                    worktree_id: folded_dirs_entry.worktree_id,
4095                    entry: folded_dirs_entry.entries[0].clone(),
4096                })),
4097                _ => entry,
4098            }
4099        } else {
4100            entry
4101        };
4102
4103        if track_matches {
4104            let id = state.entries.len();
4105            match &entry {
4106                PanelEntry::Fs(fs_entry) => {
4107                    if let Some(file_name) = self
4108                        .relative_path(fs_entry, cx)
4109                        .and_then(|path| Some(path.file_name()?.to_string()))
4110                    {
4111                        state
4112                            .match_candidates
4113                            .push(StringMatchCandidate::new(id, &file_name));
4114                    }
4115                }
4116                PanelEntry::FoldedDirs(folded_dir_entry) => {
4117                    let dir_names = self.dir_names_string(
4118                        &folded_dir_entry.entries,
4119                        folded_dir_entry.worktree_id,
4120                        cx,
4121                    );
4122                    {
4123                        state
4124                            .match_candidates
4125                            .push(StringMatchCandidate::new(id, &dir_names));
4126                    }
4127                }
4128                PanelEntry::Outline(OutlineEntry::Outline(outline_entry)) => state
4129                    .match_candidates
4130                    .push(StringMatchCandidate::new(id, &outline_entry.outline.text)),
4131                PanelEntry::Outline(OutlineEntry::Excerpt(_)) => {}
4132                PanelEntry::Search(new_search_entry) => {
4133                    if let Some(search_data) = new_search_entry.render_data.get() {
4134                        state
4135                            .match_candidates
4136                            .push(StringMatchCandidate::new(id, &search_data.context_text));
4137                    }
4138                }
4139            }
4140        }
4141
4142        let width_estimate = self.width_estimate(depth, &entry, cx);
4143        if Some(width_estimate)
4144            > state
4145                .max_width_estimate_and_index
4146                .map(|(estimate, _)| estimate)
4147        {
4148            state.max_width_estimate_and_index = Some((width_estimate, state.entries.len()));
4149        }
4150        state.entries.push(CachedEntry {
4151            depth,
4152            entry,
4153            string_match: None,
4154        });
4155    }
4156
4157    fn dir_names_string(&self, entries: &[GitEntry], worktree_id: WorktreeId, cx: &App) -> String {
4158        let dir_names_segment = entries
4159            .iter()
4160            .map(|entry| self.entry_name(&worktree_id, entry, cx))
4161            .collect::<PathBuf>();
4162        dir_names_segment.to_string_lossy().into_owned()
4163    }
4164
4165    fn query(&self, cx: &App) -> Option<String> {
4166        let query = self.filter_editor.read(cx).text(cx);
4167        if query.trim().is_empty() {
4168            None
4169        } else {
4170            Some(query)
4171        }
4172    }
4173
4174    fn is_expanded(&self, entry: &FsEntry) -> bool {
4175        let entry_to_check = match entry {
4176            FsEntry::ExternalFile(FsEntryExternalFile { buffer_id, .. }) => {
4177                CollapsedEntry::ExternalFile(*buffer_id)
4178            }
4179            FsEntry::File(FsEntryFile {
4180                worktree_id,
4181                buffer_id,
4182                ..
4183            }) => CollapsedEntry::File(*worktree_id, *buffer_id),
4184            FsEntry::Directory(FsEntryDirectory {
4185                worktree_id, entry, ..
4186            }) => CollapsedEntry::Dir(*worktree_id, entry.id),
4187        };
4188        !self.collapsed_entries.contains(&entry_to_check)
4189    }
4190
4191    fn update_non_fs_items(&mut self, window: &mut Window, cx: &mut Context<OutlinePanel>) -> bool {
4192        if !self.active {
4193            return false;
4194        }
4195
4196        let mut update_cached_items = false;
4197        update_cached_items |= self.update_search_matches(window, cx);
4198        self.fetch_outdated_outlines(window, cx);
4199        if update_cached_items {
4200            self.selected_entry.invalidate();
4201        }
4202        update_cached_items
4203    }
4204
4205    fn update_search_matches(
4206        &mut self,
4207        window: &mut Window,
4208        cx: &mut Context<OutlinePanel>,
4209    ) -> bool {
4210        if !self.active {
4211            return false;
4212        }
4213
4214        let project_search = self
4215            .active_item()
4216            .and_then(|item| item.downcast::<ProjectSearchView>());
4217        let project_search_matches = project_search
4218            .as_ref()
4219            .map(|project_search| project_search.read(cx).get_matches(cx))
4220            .unwrap_or_default();
4221
4222        let buffer_search = self
4223            .active_item()
4224            .as_deref()
4225            .and_then(|active_item| {
4226                self.workspace
4227                    .upgrade()
4228                    .and_then(|workspace| workspace.read(cx).pane_for(active_item))
4229            })
4230            .and_then(|pane| {
4231                pane.read(cx)
4232                    .toolbar()
4233                    .read(cx)
4234                    .item_of_type::<BufferSearchBar>()
4235            });
4236        let buffer_search_matches = self
4237            .active_editor()
4238            .map(|active_editor| {
4239                active_editor.update(cx, |editor, cx| editor.get_matches(window, cx))
4240            })
4241            .unwrap_or_default();
4242
4243        let mut update_cached_entries = false;
4244        if buffer_search_matches.is_empty() && project_search_matches.is_empty() {
4245            if matches!(self.mode, ItemsDisplayMode::Search(_)) {
4246                self.mode = ItemsDisplayMode::Outline;
4247                update_cached_entries = true;
4248            }
4249        } else {
4250            let (kind, new_search_matches, new_search_query) = if buffer_search_matches.is_empty() {
4251                (
4252                    SearchKind::Project,
4253                    project_search_matches,
4254                    project_search
4255                        .map(|project_search| project_search.read(cx).search_query_text(cx))
4256                        .unwrap_or_default(),
4257                )
4258            } else {
4259                (
4260                    SearchKind::Buffer,
4261                    buffer_search_matches,
4262                    buffer_search
4263                        .map(|buffer_search| buffer_search.read(cx).query(cx))
4264                        .unwrap_or_default(),
4265                )
4266            };
4267
4268            let mut previous_matches = HashMap::default();
4269            update_cached_entries = match &mut self.mode {
4270                ItemsDisplayMode::Search(current_search_state) => {
4271                    let update = current_search_state.query != new_search_query
4272                        || current_search_state.kind != kind
4273                        || current_search_state.matches.is_empty()
4274                        || current_search_state.matches.iter().enumerate().any(
4275                            |(i, (match_range, _))| new_search_matches.get(i) != Some(match_range),
4276                        );
4277                    if current_search_state.kind == kind {
4278                        previous_matches.extend(current_search_state.matches.drain(..));
4279                    }
4280                    update
4281                }
4282                ItemsDisplayMode::Outline => true,
4283            };
4284            self.mode = ItemsDisplayMode::Search(SearchState::new(
4285                kind,
4286                new_search_query,
4287                previous_matches,
4288                new_search_matches,
4289                cx.theme().syntax().clone(),
4290                window,
4291                cx,
4292            ));
4293        }
4294        update_cached_entries
4295    }
4296
4297    fn add_excerpt_entries(
4298        &mut self,
4299        state: &mut GenerationState,
4300        buffer_id: BufferId,
4301        entries_to_add: &[ExcerptId],
4302        parent_depth: usize,
4303        track_matches: bool,
4304        is_singleton: bool,
4305        query: Option<&str>,
4306        cx: &mut Context<Self>,
4307    ) {
4308        if let Some(excerpts) = self.excerpts.get(&buffer_id) {
4309            let buffer_snapshot = self.buffer_snapshot_for_id(buffer_id, cx);
4310
4311            for &excerpt_id in entries_to_add {
4312                let Some(excerpt) = excerpts.get(&excerpt_id) else {
4313                    continue;
4314                };
4315                let excerpt_depth = parent_depth + 1;
4316                self.push_entry(
4317                    state,
4318                    track_matches,
4319                    PanelEntry::Outline(OutlineEntry::Excerpt(OutlineEntryExcerpt {
4320                        buffer_id,
4321                        id: excerpt_id,
4322                        range: excerpt.range.clone(),
4323                    })),
4324                    excerpt_depth,
4325                    cx,
4326                );
4327
4328                let mut outline_base_depth = excerpt_depth + 1;
4329                if is_singleton {
4330                    outline_base_depth = 0;
4331                    state.clear();
4332                } else if query.is_none()
4333                    && self
4334                        .collapsed_entries
4335                        .contains(&CollapsedEntry::Excerpt(buffer_id, excerpt_id))
4336                {
4337                    continue;
4338                }
4339
4340                let mut last_depth_at_level: Vec<Option<Range<Anchor>>> = vec![None; 10];
4341
4342                let all_outlines: Vec<_> = excerpt.iter_outlines().collect();
4343
4344                let mut outline_has_children = HashMap::default();
4345                let mut visible_outlines = Vec::new();
4346                let mut collapsed_state: Option<(usize, Range<Anchor>)> = None;
4347
4348                for (i, &outline) in all_outlines.iter().enumerate() {
4349                    let has_children = all_outlines
4350                        .get(i + 1)
4351                        .map(|next| next.depth > outline.depth)
4352                        .unwrap_or(false);
4353
4354                    outline_has_children
4355                        .insert((outline.range.clone(), outline.depth), has_children);
4356
4357                    let mut should_include = true;
4358
4359                    if let Some((collapsed_depth, collapsed_range)) = &collapsed_state {
4360                        if outline.depth <= *collapsed_depth {
4361                            collapsed_state = None;
4362                        } else if let Some(buffer_snapshot) = buffer_snapshot.as_ref() {
4363                            let outline_start = outline.range.start;
4364                            if outline_start
4365                                .cmp(&collapsed_range.start, buffer_snapshot)
4366                                .is_ge()
4367                                && outline_start
4368                                    .cmp(&collapsed_range.end, buffer_snapshot)
4369                                    .is_lt()
4370                            {
4371                                should_include = false; // Skip - inside collapsed range
4372                            } else {
4373                                collapsed_state = None;
4374                            }
4375                        }
4376                    }
4377
4378                    // Check if this outline itself is collapsed
4379                    if should_include
4380                        && self.collapsed_entries.contains(&CollapsedEntry::Outline(
4381                            buffer_id,
4382                            excerpt_id,
4383                            outline.range.clone(),
4384                        ))
4385                    {
4386                        collapsed_state = Some((outline.depth, outline.range.clone()));
4387                    }
4388
4389                    if should_include {
4390                        visible_outlines.push(outline);
4391                    }
4392                }
4393
4394                self.outline_children_cache
4395                    .entry(buffer_id)
4396                    .or_default()
4397                    .extend(outline_has_children);
4398
4399                for outline in visible_outlines {
4400                    let outline_entry = OutlineEntryOutline {
4401                        buffer_id,
4402                        excerpt_id,
4403                        outline: outline.clone(),
4404                    };
4405
4406                    if outline.depth < last_depth_at_level.len() {
4407                        last_depth_at_level[outline.depth] = Some(outline.range.clone());
4408                        // Clear deeper levels when we go back to a shallower depth
4409                        for d in (outline.depth + 1)..last_depth_at_level.len() {
4410                            last_depth_at_level[d] = None;
4411                        }
4412                    }
4413
4414                    self.push_entry(
4415                        state,
4416                        track_matches,
4417                        PanelEntry::Outline(OutlineEntry::Outline(outline_entry)),
4418                        outline_base_depth + outline.depth,
4419                        cx,
4420                    );
4421                }
4422            }
4423        }
4424    }
4425
4426    fn add_search_entries(
4427        &mut self,
4428        state: &mut GenerationState,
4429        active_editor: &Entity<Editor>,
4430        parent_entry: FsEntry,
4431        parent_depth: usize,
4432        filter_query: Option<String>,
4433        is_singleton: bool,
4434        cx: &mut Context<Self>,
4435    ) {
4436        let ItemsDisplayMode::Search(search_state) = &mut self.mode else {
4437            return;
4438        };
4439
4440        let kind = search_state.kind;
4441        let related_excerpts = match &parent_entry {
4442            FsEntry::Directory(_) => return,
4443            FsEntry::ExternalFile(external) => &external.excerpts,
4444            FsEntry::File(file) => &file.excerpts,
4445        }
4446        .iter()
4447        .copied()
4448        .collect::<HashSet<_>>();
4449
4450        let depth = if is_singleton { 0 } else { parent_depth + 1 };
4451        let new_search_matches = search_state
4452            .matches
4453            .iter()
4454            .filter(|(match_range, _)| {
4455                related_excerpts.contains(&match_range.start.excerpt_id)
4456                    || related_excerpts.contains(&match_range.end.excerpt_id)
4457            })
4458            .filter(|(match_range, _)| {
4459                let editor = active_editor.read(cx);
4460                let snapshot = editor.buffer().read(cx).snapshot(cx);
4461                if let Some(buffer_id) = snapshot.buffer_id_for_anchor(match_range.start)
4462                    && editor.is_buffer_folded(buffer_id, cx)
4463                {
4464                    return false;
4465                }
4466                if let Some(buffer_id) = snapshot.buffer_id_for_anchor(match_range.end)
4467                    && editor.is_buffer_folded(buffer_id, cx)
4468                {
4469                    return false;
4470                }
4471                true
4472            });
4473
4474        let new_search_entries = new_search_matches
4475            .map(|(match_range, search_data)| SearchEntry {
4476                match_range: match_range.clone(),
4477                kind,
4478                render_data: Arc::clone(search_data),
4479            })
4480            .collect::<Vec<_>>();
4481        for new_search_entry in new_search_entries {
4482            self.push_entry(
4483                state,
4484                filter_query.is_some(),
4485                PanelEntry::Search(new_search_entry),
4486                depth,
4487                cx,
4488            );
4489        }
4490    }
4491
4492    fn active_editor(&self) -> Option<Entity<Editor>> {
4493        self.active_item.as_ref()?.active_editor.upgrade()
4494    }
4495
4496    fn active_item(&self) -> Option<Box<dyn ItemHandle>> {
4497        self.active_item.as_ref()?.item_handle.upgrade()
4498    }
4499
4500    fn should_replace_active_item(&self, new_active_item: &dyn ItemHandle) -> bool {
4501        self.active_item().is_none_or(|active_item| {
4502            !self.pinned && active_item.item_id() != new_active_item.item_id()
4503        })
4504    }
4505
4506    pub fn toggle_active_editor_pin(
4507        &mut self,
4508        _: &ToggleActiveEditorPin,
4509        window: &mut Window,
4510        cx: &mut Context<Self>,
4511    ) {
4512        self.pinned = !self.pinned;
4513        if !self.pinned
4514            && let Some((active_item, active_editor)) = self
4515                .workspace
4516                .upgrade()
4517                .and_then(|workspace| workspace_active_editor(workspace.read(cx), cx))
4518            && self.should_replace_active_item(active_item.as_ref())
4519        {
4520            self.replace_active_editor(active_item, active_editor, window, cx);
4521        }
4522
4523        cx.notify();
4524    }
4525
4526    fn selected_entry(&self) -> Option<&PanelEntry> {
4527        match &self.selected_entry {
4528            SelectedEntry::Invalidated(entry) => entry.as_ref(),
4529            SelectedEntry::Valid(entry, _) => Some(entry),
4530            SelectedEntry::None => None,
4531        }
4532    }
4533
4534    fn select_entry(
4535        &mut self,
4536        entry: PanelEntry,
4537        focus: bool,
4538        window: &mut Window,
4539        cx: &mut Context<Self>,
4540    ) {
4541        if focus {
4542            self.focus_handle.focus(window);
4543        }
4544        let ix = self
4545            .cached_entries
4546            .iter()
4547            .enumerate()
4548            .find(|(_, cached_entry)| &cached_entry.entry == &entry)
4549            .map(|(i, _)| i)
4550            .unwrap_or_default();
4551
4552        self.selected_entry = SelectedEntry::Valid(entry, ix);
4553
4554        self.autoscroll(cx);
4555        cx.notify();
4556    }
4557
4558    fn width_estimate(&self, depth: usize, entry: &PanelEntry, cx: &App) -> u64 {
4559        let item_text_chars = match entry {
4560            PanelEntry::Fs(FsEntry::ExternalFile(external)) => self
4561                .buffer_snapshot_for_id(external.buffer_id, cx)
4562                .and_then(|snapshot| Some(snapshot.file()?.path().file_name()?.len()))
4563                .unwrap_or_default(),
4564            PanelEntry::Fs(FsEntry::Directory(directory)) => directory
4565                .entry
4566                .path
4567                .file_name()
4568                .map(|name| name.len())
4569                .unwrap_or_default(),
4570            PanelEntry::Fs(FsEntry::File(file)) => file
4571                .entry
4572                .path
4573                .file_name()
4574                .map(|name| name.len())
4575                .unwrap_or_default(),
4576            PanelEntry::FoldedDirs(folded_dirs) => {
4577                folded_dirs
4578                    .entries
4579                    .iter()
4580                    .map(|dir| {
4581                        dir.path
4582                            .file_name()
4583                            .map(|name| name.len())
4584                            .unwrap_or_default()
4585                    })
4586                    .sum::<usize>()
4587                    + folded_dirs.entries.len().saturating_sub(1) * "/".len()
4588            }
4589            PanelEntry::Outline(OutlineEntry::Excerpt(excerpt)) => self
4590                .excerpt_label(excerpt.buffer_id, &excerpt.range, cx)
4591                .map(|label| label.len())
4592                .unwrap_or_default(),
4593            PanelEntry::Outline(OutlineEntry::Outline(entry)) => entry.outline.text.len(),
4594            PanelEntry::Search(search) => search
4595                .render_data
4596                .get()
4597                .map(|data| data.context_text.len())
4598                .unwrap_or_default(),
4599        };
4600
4601        (item_text_chars + depth) as u64
4602    }
4603
4604    fn render_main_contents(
4605        &mut self,
4606        query: Option<String>,
4607        show_indent_guides: bool,
4608        indent_size: f32,
4609        window: &mut Window,
4610        cx: &mut Context<Self>,
4611    ) -> impl IntoElement {
4612        let contents = if self.cached_entries.is_empty() {
4613            let header = if query.is_some() {
4614                "No matches for query"
4615            } else {
4616                "No outlines available"
4617            };
4618
4619            v_flex()
4620                .id("empty-outline-state")
4621                .gap_0p5()
4622                .flex_1()
4623                .justify_center()
4624                .size_full()
4625                .child(h_flex().justify_center().child(Label::new(header)))
4626                .when_some(query, |panel, query| {
4627                    panel.child(
4628                        h_flex()
4629                            .px_0p5()
4630                            .justify_center()
4631                            .bg(cx.theme().colors().element_selected.opacity(0.2))
4632                            .child(Label::new(query)),
4633                    )
4634                })
4635                .child(h_flex().justify_center().child({
4636                    let keystroke = match self.position(window, cx) {
4637                        DockPosition::Left => window.keystroke_text_for(&workspace::ToggleLeftDock),
4638                        DockPosition::Bottom => {
4639                            window.keystroke_text_for(&workspace::ToggleBottomDock)
4640                        }
4641                        DockPosition::Right => {
4642                            window.keystroke_text_for(&workspace::ToggleRightDock)
4643                        }
4644                    };
4645                    Label::new(format!("Toggle Panel With {keystroke}")).color(Color::Muted)
4646                }))
4647        } else {
4648            let list_contents = {
4649                let items_len = self.cached_entries.len();
4650                let multi_buffer_snapshot = self
4651                    .active_editor()
4652                    .map(|editor| editor.read(cx).buffer().read(cx).snapshot(cx));
4653                uniform_list(
4654                    "entries",
4655                    items_len,
4656                    cx.processor(move |outline_panel, range: Range<usize>, window, cx| {
4657                        outline_panel.rendered_entries_len = range.end - range.start;
4658                        let entries = outline_panel.cached_entries.get(range);
4659                        entries
4660                            .map(|entries| entries.to_vec())
4661                            .unwrap_or_default()
4662                            .into_iter()
4663                            .filter_map(|cached_entry| match cached_entry.entry {
4664                                PanelEntry::Fs(entry) => Some(outline_panel.render_entry(
4665                                    &entry,
4666                                    cached_entry.depth,
4667                                    cached_entry.string_match.as_ref(),
4668                                    window,
4669                                    cx,
4670                                )),
4671                                PanelEntry::FoldedDirs(folded_dirs_entry) => {
4672                                    Some(outline_panel.render_folded_dirs(
4673                                        &folded_dirs_entry,
4674                                        cached_entry.depth,
4675                                        cached_entry.string_match.as_ref(),
4676                                        window,
4677                                        cx,
4678                                    ))
4679                                }
4680                                PanelEntry::Outline(OutlineEntry::Excerpt(excerpt)) => {
4681                                    outline_panel.render_excerpt(
4682                                        &excerpt,
4683                                        cached_entry.depth,
4684                                        window,
4685                                        cx,
4686                                    )
4687                                }
4688                                PanelEntry::Outline(OutlineEntry::Outline(entry)) => {
4689                                    Some(outline_panel.render_outline(
4690                                        &entry,
4691                                        cached_entry.depth,
4692                                        cached_entry.string_match.as_ref(),
4693                                        window,
4694                                        cx,
4695                                    ))
4696                                }
4697                                PanelEntry::Search(SearchEntry {
4698                                    match_range,
4699                                    render_data,
4700                                    kind,
4701                                    ..
4702                                }) => outline_panel.render_search_match(
4703                                    multi_buffer_snapshot.as_ref(),
4704                                    &match_range,
4705                                    &render_data,
4706                                    kind,
4707                                    cached_entry.depth,
4708                                    cached_entry.string_match.as_ref(),
4709                                    window,
4710                                    cx,
4711                                ),
4712                            })
4713                            .collect()
4714                    }),
4715                )
4716                .with_sizing_behavior(ListSizingBehavior::Infer)
4717                .with_horizontal_sizing_behavior(ListHorizontalSizingBehavior::Unconstrained)
4718                .with_width_from_item(self.max_width_item_index)
4719                .track_scroll(&self.scroll_handle)
4720                .when(show_indent_guides, |list| {
4721                    list.with_decoration(
4722                        ui::indent_guides(px(indent_size), IndentGuideColors::panel(cx))
4723                            .with_compute_indents_fn(cx.entity(), |outline_panel, range, _, _| {
4724                                let entries = outline_panel.cached_entries.get(range);
4725                                if let Some(entries) = entries {
4726                                    entries.iter().map(|item| item.depth).collect()
4727                                } else {
4728                                    smallvec::SmallVec::new()
4729                                }
4730                            })
4731                            .with_render_fn(cx.entity(), move |outline_panel, params, _, _| {
4732                                const LEFT_OFFSET: Pixels = px(14.);
4733
4734                                let indent_size = params.indent_size;
4735                                let item_height = params.item_height;
4736                                let active_indent_guide_ix = find_active_indent_guide_ix(
4737                                    outline_panel,
4738                                    &params.indent_guides,
4739                                );
4740
4741                                params
4742                                    .indent_guides
4743                                    .into_iter()
4744                                    .enumerate()
4745                                    .map(|(ix, layout)| {
4746                                        let bounds = Bounds::new(
4747                                            point(
4748                                                layout.offset.x * indent_size + LEFT_OFFSET,
4749                                                layout.offset.y * item_height,
4750                                            ),
4751                                            size(px(1.), layout.length * item_height),
4752                                        );
4753                                        ui::RenderedIndentGuide {
4754                                            bounds,
4755                                            layout,
4756                                            is_active: active_indent_guide_ix == Some(ix),
4757                                            hitbox: None,
4758                                        }
4759                                    })
4760                                    .collect()
4761                            }),
4762                    )
4763                })
4764            };
4765
4766            v_flex()
4767                .flex_shrink()
4768                .size_full()
4769                .child(list_contents.size_full().flex_shrink())
4770                .custom_scrollbars(
4771                    Scrollbars::for_settings::<OutlinePanelSettings>()
4772                        .tracked_scroll_handle(&self.scroll_handle.clone())
4773                        .with_track_along(
4774                            ScrollAxes::Horizontal,
4775                            cx.theme().colors().panel_background,
4776                        )
4777                        .tracked_entity(cx.entity_id()),
4778                    window,
4779                    cx,
4780                )
4781        }
4782        .children(self.context_menu.as_ref().map(|(menu, position, _)| {
4783            deferred(
4784                anchored()
4785                    .position(*position)
4786                    .anchor(gpui::Corner::TopLeft)
4787                    .child(menu.clone()),
4788            )
4789            .with_priority(1)
4790        }));
4791
4792        v_flex().w_full().flex_1().overflow_hidden().child(contents)
4793    }
4794
4795    fn render_filter_footer(&mut self, pinned: bool, cx: &mut Context<Self>) -> Div {
4796        let (icon, icon_tooltip) = if pinned {
4797            (IconName::Unpin, "Unpin Outline")
4798        } else {
4799            (IconName::Pin, "Pin Active Outline")
4800        };
4801
4802        h_flex()
4803            .p_2()
4804            .h(Tab::container_height(cx))
4805            .justify_between()
4806            .border_b_1()
4807            .border_color(cx.theme().colors().border)
4808            .child(
4809                h_flex()
4810                    .w_full()
4811                    .gap_1p5()
4812                    .child(
4813                        Icon::new(IconName::MagnifyingGlass)
4814                            .size(IconSize::Small)
4815                            .color(Color::Muted),
4816                    )
4817                    .child(self.filter_editor.clone()),
4818            )
4819            .child(
4820                IconButton::new("pin_button", icon)
4821                    .tooltip(Tooltip::text(icon_tooltip))
4822                    .shape(IconButtonShape::Square)
4823                    .on_click(cx.listener(|outline_panel, _, window, cx| {
4824                        outline_panel.toggle_active_editor_pin(&ToggleActiveEditorPin, window, cx);
4825                    })),
4826            )
4827    }
4828
4829    fn buffers_inside_directory(
4830        &self,
4831        dir_worktree: WorktreeId,
4832        dir_entry: &GitEntry,
4833    ) -> HashSet<BufferId> {
4834        if !dir_entry.is_dir() {
4835            debug_panic!("buffers_inside_directory called on a non-directory entry {dir_entry:?}");
4836            return HashSet::default();
4837        }
4838
4839        self.fs_entries
4840            .iter()
4841            .skip_while(|fs_entry| match fs_entry {
4842                FsEntry::Directory(directory) => {
4843                    directory.worktree_id != dir_worktree || &directory.entry != dir_entry
4844                }
4845                _ => true,
4846            })
4847            .skip(1)
4848            .take_while(|fs_entry| match fs_entry {
4849                FsEntry::ExternalFile(..) => false,
4850                FsEntry::Directory(directory) => {
4851                    directory.worktree_id == dir_worktree
4852                        && directory.entry.path.starts_with(&dir_entry.path)
4853                }
4854                FsEntry::File(file) => {
4855                    file.worktree_id == dir_worktree && file.entry.path.starts_with(&dir_entry.path)
4856                }
4857            })
4858            .filter_map(|fs_entry| match fs_entry {
4859                FsEntry::File(file) => Some(file.buffer_id),
4860                _ => None,
4861            })
4862            .collect()
4863    }
4864}
4865
4866fn workspace_active_editor(
4867    workspace: &Workspace,
4868    cx: &App,
4869) -> Option<(Box<dyn ItemHandle>, Entity<Editor>)> {
4870    let active_item = workspace.active_item(cx)?;
4871    let active_editor = active_item
4872        .act_as::<Editor>(cx)
4873        .filter(|editor| editor.read(cx).mode().is_full())?;
4874    Some((active_item, active_editor))
4875}
4876
4877fn back_to_common_visited_parent(
4878    visited_dirs: &mut Vec<(ProjectEntryId, Arc<RelPath>)>,
4879    worktree_id: &WorktreeId,
4880    new_entry: &Entry,
4881) -> Option<(WorktreeId, ProjectEntryId)> {
4882    while let Some((visited_dir_id, visited_path)) = visited_dirs.last() {
4883        match new_entry.path.parent() {
4884            Some(parent_path) => {
4885                if parent_path == visited_path.as_ref() {
4886                    return Some((*worktree_id, *visited_dir_id));
4887                }
4888            }
4889            None => {
4890                break;
4891            }
4892        }
4893        visited_dirs.pop();
4894    }
4895    None
4896}
4897
4898fn file_name(path: &Path) -> String {
4899    let mut current_path = path;
4900    loop {
4901        if let Some(file_name) = current_path.file_name() {
4902            return file_name.to_string_lossy().into_owned();
4903        }
4904        match current_path.parent() {
4905            Some(parent) => current_path = parent,
4906            None => return path.to_string_lossy().into_owned(),
4907        }
4908    }
4909}
4910
4911impl Panel for OutlinePanel {
4912    fn persistent_name() -> &'static str {
4913        "Outline Panel"
4914    }
4915
4916    fn panel_key() -> &'static str {
4917        OUTLINE_PANEL_KEY
4918    }
4919
4920    fn position(&self, _: &Window, cx: &App) -> DockPosition {
4921        match OutlinePanelSettings::get_global(cx).dock {
4922            DockSide::Left => DockPosition::Left,
4923            DockSide::Right => DockPosition::Right,
4924        }
4925    }
4926
4927    fn position_is_valid(&self, position: DockPosition) -> bool {
4928        matches!(position, DockPosition::Left | DockPosition::Right)
4929    }
4930
4931    fn set_position(&mut self, position: DockPosition, _: &mut Window, cx: &mut Context<Self>) {
4932        settings::update_settings_file(self.fs.clone(), cx, move |settings, _| {
4933            let dock = match position {
4934                DockPosition::Left | DockPosition::Bottom => DockSide::Left,
4935                DockPosition::Right => DockSide::Right,
4936            };
4937            settings.outline_panel.get_or_insert_default().dock = Some(dock);
4938        });
4939    }
4940
4941    fn size(&self, _: &Window, cx: &App) -> Pixels {
4942        self.width
4943            .unwrap_or_else(|| OutlinePanelSettings::get_global(cx).default_width)
4944    }
4945
4946    fn set_size(&mut self, size: Option<Pixels>, window: &mut Window, cx: &mut Context<Self>) {
4947        self.width = size;
4948        cx.notify();
4949        cx.defer_in(window, |this, _, cx| {
4950            this.serialize(cx);
4951        });
4952    }
4953
4954    fn icon(&self, _: &Window, cx: &App) -> Option<IconName> {
4955        OutlinePanelSettings::get_global(cx)
4956            .button
4957            .then_some(IconName::ListTree)
4958    }
4959
4960    fn icon_tooltip(&self, _window: &Window, _: &App) -> Option<&'static str> {
4961        Some("Outline Panel")
4962    }
4963
4964    fn toggle_action(&self) -> Box<dyn Action> {
4965        Box::new(ToggleFocus)
4966    }
4967
4968    fn starts_open(&self, _window: &Window, _: &App) -> bool {
4969        self.active
4970    }
4971
4972    fn set_active(&mut self, active: bool, window: &mut Window, cx: &mut Context<Self>) {
4973        cx.spawn_in(window, async move |outline_panel, cx| {
4974            outline_panel
4975                .update_in(cx, |outline_panel, window, cx| {
4976                    let old_active = outline_panel.active;
4977                    outline_panel.active = active;
4978                    if old_active != active {
4979                        if active
4980                            && let Some((active_item, active_editor)) =
4981                                outline_panel.workspace.upgrade().and_then(|workspace| {
4982                                    workspace_active_editor(workspace.read(cx), cx)
4983                                })
4984                        {
4985                            if outline_panel.should_replace_active_item(active_item.as_ref()) {
4986                                outline_panel.replace_active_editor(
4987                                    active_item,
4988                                    active_editor,
4989                                    window,
4990                                    cx,
4991                                );
4992                            } else {
4993                                outline_panel.update_fs_entries(active_editor, None, window, cx)
4994                            }
4995                            return;
4996                        }
4997
4998                        if !outline_panel.pinned {
4999                            outline_panel.clear_previous(window, cx);
5000                        }
5001                    }
5002                    outline_panel.serialize(cx);
5003                })
5004                .ok();
5005        })
5006        .detach()
5007    }
5008
5009    fn activation_priority(&self) -> u32 {
5010        5
5011    }
5012}
5013
5014impl Focusable for OutlinePanel {
5015    fn focus_handle(&self, cx: &App) -> FocusHandle {
5016        self.filter_editor.focus_handle(cx)
5017    }
5018}
5019
5020impl EventEmitter<Event> for OutlinePanel {}
5021
5022impl EventEmitter<PanelEvent> for OutlinePanel {}
5023
5024impl Render for OutlinePanel {
5025    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
5026        let (is_local, is_via_ssh) = self.project.read_with(cx, |project, _| {
5027            (project.is_local(), project.is_via_remote_server())
5028        });
5029        let query = self.query(cx);
5030        let pinned = self.pinned;
5031        let settings = OutlinePanelSettings::get_global(cx);
5032        let indent_size = settings.indent_size;
5033        let show_indent_guides = settings.indent_guides.show == ShowIndentGuides::Always;
5034
5035        let search_query = match &self.mode {
5036            ItemsDisplayMode::Search(search_query) => Some(search_query),
5037            _ => None,
5038        };
5039
5040        let search_query_text = search_query.map(|sq| sq.query.to_string());
5041
5042        v_flex()
5043            .id("outline-panel")
5044            .size_full()
5045            .overflow_hidden()
5046            .relative()
5047            .key_context(self.dispatch_context(window, cx))
5048            .on_action(cx.listener(Self::open_selected_entry))
5049            .on_action(cx.listener(Self::cancel))
5050            .on_action(cx.listener(Self::scroll_up))
5051            .on_action(cx.listener(Self::scroll_down))
5052            .on_action(cx.listener(Self::select_next))
5053            .on_action(cx.listener(Self::scroll_cursor_center))
5054            .on_action(cx.listener(Self::scroll_cursor_top))
5055            .on_action(cx.listener(Self::scroll_cursor_bottom))
5056            .on_action(cx.listener(Self::select_previous))
5057            .on_action(cx.listener(Self::select_first))
5058            .on_action(cx.listener(Self::select_last))
5059            .on_action(cx.listener(Self::select_parent))
5060            .on_action(cx.listener(Self::expand_selected_entry))
5061            .on_action(cx.listener(Self::collapse_selected_entry))
5062            .on_action(cx.listener(Self::expand_all_entries))
5063            .on_action(cx.listener(Self::collapse_all_entries))
5064            .on_action(cx.listener(Self::copy_path))
5065            .on_action(cx.listener(Self::copy_relative_path))
5066            .on_action(cx.listener(Self::toggle_active_editor_pin))
5067            .on_action(cx.listener(Self::unfold_directory))
5068            .on_action(cx.listener(Self::fold_directory))
5069            .on_action(cx.listener(Self::open_excerpts))
5070            .on_action(cx.listener(Self::open_excerpts_split))
5071            .when(is_local, |el| {
5072                el.on_action(cx.listener(Self::reveal_in_finder))
5073            })
5074            .when(is_local || is_via_ssh, |el| {
5075                el.on_action(cx.listener(Self::open_in_terminal))
5076            })
5077            .on_mouse_down(
5078                MouseButton::Right,
5079                cx.listener(move |outline_panel, event: &MouseDownEvent, window, cx| {
5080                    if let Some(entry) = outline_panel.selected_entry().cloned() {
5081                        outline_panel.deploy_context_menu(event.position, entry, window, cx)
5082                    } else if let Some(entry) = outline_panel.fs_entries.first().cloned() {
5083                        outline_panel.deploy_context_menu(
5084                            event.position,
5085                            PanelEntry::Fs(entry),
5086                            window,
5087                            cx,
5088                        )
5089                    }
5090                }),
5091            )
5092            .track_focus(&self.focus_handle)
5093            .child(self.render_filter_footer(pinned, cx))
5094            .when_some(search_query_text, |outline_panel, query_text| {
5095                outline_panel.child(
5096                    h_flex()
5097                        .py_1p5()
5098                        .px_2()
5099                        .h(Tab::container_height(cx))
5100                        .gap_0p5()
5101                        .border_b_1()
5102                        .border_color(cx.theme().colors().border_variant)
5103                        .child(Label::new("Searching:").color(Color::Muted))
5104                        .child(Label::new(query_text)),
5105                )
5106            })
5107            .child(self.render_main_contents(query, show_indent_guides, indent_size, window, cx))
5108    }
5109}
5110
5111fn find_active_indent_guide_ix(
5112    outline_panel: &OutlinePanel,
5113    candidates: &[IndentGuideLayout],
5114) -> Option<usize> {
5115    let SelectedEntry::Valid(_, target_ix) = &outline_panel.selected_entry else {
5116        return None;
5117    };
5118    let target_depth = outline_panel
5119        .cached_entries
5120        .get(*target_ix)
5121        .map(|cached_entry| cached_entry.depth)?;
5122
5123    let (target_ix, target_depth) = if let Some(target_depth) = outline_panel
5124        .cached_entries
5125        .get(target_ix + 1)
5126        .filter(|cached_entry| cached_entry.depth > target_depth)
5127        .map(|entry| entry.depth)
5128    {
5129        (target_ix + 1, target_depth.saturating_sub(1))
5130    } else {
5131        (*target_ix, target_depth.saturating_sub(1))
5132    };
5133
5134    candidates
5135        .iter()
5136        .enumerate()
5137        .find(|(_, guide)| {
5138            guide.offset.y <= target_ix
5139                && target_ix < guide.offset.y + guide.length
5140                && guide.offset.x == target_depth
5141        })
5142        .map(|(ix, _)| ix)
5143}
5144
5145fn subscribe_for_editor_events(
5146    editor: &Entity<Editor>,
5147    window: &mut Window,
5148    cx: &mut Context<OutlinePanel>,
5149) -> Subscription {
5150    let debounce = Some(UPDATE_DEBOUNCE);
5151    cx.subscribe_in(
5152        editor,
5153        window,
5154        move |outline_panel, editor, e: &EditorEvent, window, cx| {
5155            if !outline_panel.active {
5156                return;
5157            }
5158            match e {
5159                EditorEvent::SelectionsChanged { local: true } => {
5160                    outline_panel.reveal_entry_for_selection(editor.clone(), window, cx);
5161                    cx.notify();
5162                }
5163                EditorEvent::ExcerptsAdded { excerpts, .. } => {
5164                    outline_panel
5165                        .new_entries_for_fs_update
5166                        .extend(excerpts.iter().map(|&(excerpt_id, _)| excerpt_id));
5167                    outline_panel.update_fs_entries(editor.clone(), debounce, window, cx);
5168                }
5169                EditorEvent::ExcerptsRemoved { ids, .. } => {
5170                    let mut ids = ids.iter().collect::<HashSet<_>>();
5171                    for excerpts in outline_panel.excerpts.values_mut() {
5172                        excerpts.retain(|excerpt_id, _| !ids.remove(excerpt_id));
5173                        if ids.is_empty() {
5174                            break;
5175                        }
5176                    }
5177                    outline_panel.update_fs_entries(editor.clone(), debounce, window, cx);
5178                }
5179                EditorEvent::ExcerptsExpanded { ids } => {
5180                    outline_panel.invalidate_outlines(ids);
5181                    let update_cached_items = outline_panel.update_non_fs_items(window, cx);
5182                    if update_cached_items {
5183                        outline_panel.update_cached_entries(Some(UPDATE_DEBOUNCE), window, cx);
5184                    }
5185                }
5186                EditorEvent::ExcerptsEdited { ids } => {
5187                    outline_panel.invalidate_outlines(ids);
5188                    let update_cached_items = outline_panel.update_non_fs_items(window, cx);
5189                    if update_cached_items {
5190                        outline_panel.update_cached_entries(Some(UPDATE_DEBOUNCE), window, cx);
5191                    }
5192                }
5193                EditorEvent::BufferFoldToggled { ids, .. } => {
5194                    outline_panel.invalidate_outlines(ids);
5195                    let mut latest_unfolded_buffer_id = None;
5196                    let mut latest_folded_buffer_id = None;
5197                    let mut ignore_selections_change = false;
5198                    outline_panel.new_entries_for_fs_update.extend(
5199                        ids.iter()
5200                            .filter(|id| {
5201                                outline_panel
5202                                    .excerpts
5203                                    .iter()
5204                                    .find_map(|(buffer_id, excerpts)| {
5205                                        if excerpts.contains_key(id) {
5206                                            ignore_selections_change |= outline_panel
5207                                                .preserve_selection_on_buffer_fold_toggles
5208                                                .remove(buffer_id);
5209                                            Some(buffer_id)
5210                                        } else {
5211                                            None
5212                                        }
5213                                    })
5214                                    .map(|buffer_id| {
5215                                        if editor.read(cx).is_buffer_folded(*buffer_id, cx) {
5216                                            latest_folded_buffer_id = Some(*buffer_id);
5217                                            false
5218                                        } else {
5219                                            latest_unfolded_buffer_id = Some(*buffer_id);
5220                                            true
5221                                        }
5222                                    })
5223                                    .unwrap_or(true)
5224                            })
5225                            .copied(),
5226                    );
5227                    if !ignore_selections_change
5228                        && let Some(entry_to_select) = latest_unfolded_buffer_id
5229                            .or(latest_folded_buffer_id)
5230                            .and_then(|toggled_buffer_id| {
5231                                outline_panel.fs_entries.iter().find_map(
5232                                    |fs_entry| match fs_entry {
5233                                        FsEntry::ExternalFile(external) => {
5234                                            if external.buffer_id == toggled_buffer_id {
5235                                                Some(fs_entry.clone())
5236                                            } else {
5237                                                None
5238                                            }
5239                                        }
5240                                        FsEntry::File(FsEntryFile { buffer_id, .. }) => {
5241                                            if *buffer_id == toggled_buffer_id {
5242                                                Some(fs_entry.clone())
5243                                            } else {
5244                                                None
5245                                            }
5246                                        }
5247                                        FsEntry::Directory(..) => None,
5248                                    },
5249                                )
5250                            })
5251                            .map(PanelEntry::Fs)
5252                    {
5253                        outline_panel.select_entry(entry_to_select, true, window, cx);
5254                    }
5255
5256                    outline_panel.update_fs_entries(editor.clone(), debounce, window, cx);
5257                }
5258                EditorEvent::Reparsed(buffer_id) => {
5259                    if let Some(excerpts) = outline_panel.excerpts.get_mut(buffer_id) {
5260                        for excerpt in excerpts.values_mut() {
5261                            excerpt.invalidate_outlines();
5262                        }
5263                    }
5264                    let update_cached_items = outline_panel.update_non_fs_items(window, cx);
5265                    if update_cached_items {
5266                        outline_panel.update_cached_entries(Some(UPDATE_DEBOUNCE), window, cx);
5267                    }
5268                }
5269                EditorEvent::TitleChanged => {
5270                    outline_panel.update_fs_entries(editor.clone(), debounce, window, cx);
5271                }
5272                _ => {}
5273            }
5274        },
5275    )
5276}
5277
5278fn empty_icon() -> AnyElement {
5279    h_flex()
5280        .size(IconSize::default().rems())
5281        .invisible()
5282        .flex_none()
5283        .into_any_element()
5284}
5285
5286#[derive(Debug, Default)]
5287struct GenerationState {
5288    entries: Vec<CachedEntry>,
5289    match_candidates: Vec<StringMatchCandidate>,
5290    max_width_estimate_and_index: Option<(u64, usize)>,
5291}
5292
5293impl GenerationState {
5294    fn clear(&mut self) {
5295        self.entries.clear();
5296        self.match_candidates.clear();
5297        self.max_width_estimate_and_index = None;
5298    }
5299}
5300
5301#[cfg(test)]
5302mod tests {
5303    use db::indoc;
5304    use gpui::{TestAppContext, VisualTestContext, WindowHandle};
5305    use language::rust_lang;
5306    use pretty_assertions::assert_eq;
5307    use project::FakeFs;
5308    use search::{
5309        buffer_search,
5310        project_search::{self, perform_project_search},
5311    };
5312    use serde_json::json;
5313    use util::path;
5314    use workspace::{OpenOptions, OpenVisible, ToolbarItemView};
5315
5316    use super::*;
5317
5318    const SELECTED_MARKER: &str = "  <==== selected";
5319
5320    #[gpui::test(iterations = 10)]
5321    async fn test_project_search_results_toggling(cx: &mut TestAppContext) {
5322        init_test(cx);
5323
5324        let fs = FakeFs::new(cx.background_executor.clone());
5325        let root = path!("/rust-analyzer");
5326        populate_with_test_ra_project(&fs, root).await;
5327        let project = Project::test(fs.clone(), [Path::new(root)], cx).await;
5328        project.read_with(cx, |project, _| project.languages().add(rust_lang()));
5329        let workspace = add_outline_panel(&project, cx).await;
5330        let cx = &mut VisualTestContext::from_window(*workspace, cx);
5331        let outline_panel = outline_panel(&workspace, cx);
5332        outline_panel.update_in(cx, |outline_panel, window, cx| {
5333            outline_panel.set_active(true, window, cx)
5334        });
5335
5336        workspace
5337            .update(cx, |workspace, window, cx| {
5338                ProjectSearchView::deploy_search(
5339                    workspace,
5340                    &workspace::DeploySearch::default(),
5341                    window,
5342                    cx,
5343                )
5344            })
5345            .unwrap();
5346        let search_view = workspace
5347            .update(cx, |workspace, _, cx| {
5348                workspace
5349                    .active_pane()
5350                    .read(cx)
5351                    .items()
5352                    .find_map(|item| item.downcast::<ProjectSearchView>())
5353                    .expect("Project search view expected to appear after new search event trigger")
5354            })
5355            .unwrap();
5356
5357        let query = "param_names_for_lifetime_elision_hints";
5358        perform_project_search(&search_view, query, cx);
5359        search_view.update(cx, |search_view, cx| {
5360            search_view
5361                .results_editor()
5362                .update(cx, |results_editor, cx| {
5363                    assert_eq!(
5364                        results_editor.display_text(cx).match_indices(query).count(),
5365                        9
5366                    );
5367                });
5368        });
5369
5370        let all_matches = r#"rust-analyzer/
5371  crates/
5372    ide/src/
5373      inlay_hints/
5374        fn_lifetime_fn.rs
5375          search: match config.«param_names_for_lifetime_elision_hints» {
5376          search: allocated_lifetimes.push(if config.«param_names_for_lifetime_elision_hints» {
5377          search: Some(it) if config.«param_names_for_lifetime_elision_hints» => {
5378          search: InlayHintsConfig { «param_names_for_lifetime_elision_hints»: true, ..TEST_CONFIG },
5379      inlay_hints.rs
5380        search: pub «param_names_for_lifetime_elision_hints»: bool,
5381        search: «param_names_for_lifetime_elision_hints»: self
5382      static_index.rs
5383        search: «param_names_for_lifetime_elision_hints»: false,
5384    rust-analyzer/src/
5385      cli/
5386        analysis_stats.rs
5387          search: «param_names_for_lifetime_elision_hints»: true,
5388      config.rs
5389        search: «param_names_for_lifetime_elision_hints»: self"#
5390            .to_string();
5391
5392        let select_first_in_all_matches = |line_to_select: &str| {
5393            assert!(
5394                all_matches.contains(line_to_select),
5395                "`{line_to_select}` was not found in all matches `{all_matches}`"
5396            );
5397            all_matches.replacen(
5398                line_to_select,
5399                &format!("{line_to_select}{SELECTED_MARKER}"),
5400                1,
5401            )
5402        };
5403
5404        cx.executor()
5405            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5406        cx.run_until_parked();
5407        outline_panel.update(cx, |outline_panel, cx| {
5408            assert_eq!(
5409                display_entries(
5410                    &project,
5411                    &snapshot(outline_panel, cx),
5412                    &outline_panel.cached_entries,
5413                    outline_panel.selected_entry(),
5414                    cx,
5415                ),
5416                select_first_in_all_matches(
5417                    "search: match config.«param_names_for_lifetime_elision_hints» {"
5418                )
5419            );
5420        });
5421
5422        outline_panel.update_in(cx, |outline_panel, window, cx| {
5423            outline_panel.select_parent(&SelectParent, window, cx);
5424            assert_eq!(
5425                display_entries(
5426                    &project,
5427                    &snapshot(outline_panel, cx),
5428                    &outline_panel.cached_entries,
5429                    outline_panel.selected_entry(),
5430                    cx,
5431                ),
5432                select_first_in_all_matches("fn_lifetime_fn.rs")
5433            );
5434        });
5435        outline_panel.update_in(cx, |outline_panel, window, cx| {
5436            outline_panel.collapse_selected_entry(&CollapseSelectedEntry, window, cx);
5437        });
5438        cx.executor()
5439            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5440        cx.run_until_parked();
5441        outline_panel.update(cx, |outline_panel, cx| {
5442            assert_eq!(
5443                display_entries(
5444                    &project,
5445                    &snapshot(outline_panel, cx),
5446                    &outline_panel.cached_entries,
5447                    outline_panel.selected_entry(),
5448                    cx,
5449                ),
5450                format!(
5451                    r#"rust-analyzer/
5452  crates/
5453    ide/src/
5454      inlay_hints/
5455        fn_lifetime_fn.rs{SELECTED_MARKER}
5456      inlay_hints.rs
5457        search: pub «param_names_for_lifetime_elision_hints»: bool,
5458        search: «param_names_for_lifetime_elision_hints»: self
5459      static_index.rs
5460        search: «param_names_for_lifetime_elision_hints»: false,
5461    rust-analyzer/src/
5462      cli/
5463        analysis_stats.rs
5464          search: «param_names_for_lifetime_elision_hints»: true,
5465      config.rs
5466        search: «param_names_for_lifetime_elision_hints»: self"#,
5467                )
5468            );
5469        });
5470
5471        outline_panel.update_in(cx, |outline_panel, window, cx| {
5472            outline_panel.expand_all_entries(&ExpandAllEntries, window, cx);
5473        });
5474        cx.executor()
5475            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5476        cx.run_until_parked();
5477        outline_panel.update_in(cx, |outline_panel, window, cx| {
5478            outline_panel.select_parent(&SelectParent, window, cx);
5479            assert_eq!(
5480                display_entries(
5481                    &project,
5482                    &snapshot(outline_panel, cx),
5483                    &outline_panel.cached_entries,
5484                    outline_panel.selected_entry(),
5485                    cx,
5486                ),
5487                select_first_in_all_matches("inlay_hints/")
5488            );
5489        });
5490
5491        outline_panel.update_in(cx, |outline_panel, window, cx| {
5492            outline_panel.select_parent(&SelectParent, window, cx);
5493            assert_eq!(
5494                display_entries(
5495                    &project,
5496                    &snapshot(outline_panel, cx),
5497                    &outline_panel.cached_entries,
5498                    outline_panel.selected_entry(),
5499                    cx,
5500                ),
5501                select_first_in_all_matches("ide/src/")
5502            );
5503        });
5504
5505        outline_panel.update_in(cx, |outline_panel, window, cx| {
5506            outline_panel.collapse_selected_entry(&CollapseSelectedEntry, window, cx);
5507        });
5508        cx.executor()
5509            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5510        cx.run_until_parked();
5511        outline_panel.update(cx, |outline_panel, cx| {
5512            assert_eq!(
5513                display_entries(
5514                    &project,
5515                    &snapshot(outline_panel, cx),
5516                    &outline_panel.cached_entries,
5517                    outline_panel.selected_entry(),
5518                    cx,
5519                ),
5520                format!(
5521                    r#"rust-analyzer/
5522  crates/
5523    ide/src/{SELECTED_MARKER}
5524    rust-analyzer/src/
5525      cli/
5526        analysis_stats.rs
5527          search: «param_names_for_lifetime_elision_hints»: true,
5528      config.rs
5529        search: «param_names_for_lifetime_elision_hints»: self"#,
5530                )
5531            );
5532        });
5533        outline_panel.update_in(cx, |outline_panel, window, cx| {
5534            outline_panel.expand_selected_entry(&ExpandSelectedEntry, window, cx);
5535        });
5536        cx.executor()
5537            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5538        cx.run_until_parked();
5539        outline_panel.update(cx, |outline_panel, cx| {
5540            assert_eq!(
5541                display_entries(
5542                    &project,
5543                    &snapshot(outline_panel, cx),
5544                    &outline_panel.cached_entries,
5545                    outline_panel.selected_entry(),
5546                    cx,
5547                ),
5548                select_first_in_all_matches("ide/src/")
5549            );
5550        });
5551    }
5552
5553    #[gpui::test(iterations = 10)]
5554    async fn test_item_filtering(cx: &mut TestAppContext) {
5555        init_test(cx);
5556
5557        let fs = FakeFs::new(cx.background_executor.clone());
5558        let root = path!("/rust-analyzer");
5559        populate_with_test_ra_project(&fs, root).await;
5560        let project = Project::test(fs.clone(), [Path::new(root)], cx).await;
5561        project.read_with(cx, |project, _| project.languages().add(rust_lang()));
5562        let workspace = add_outline_panel(&project, cx).await;
5563        let cx = &mut VisualTestContext::from_window(*workspace, cx);
5564        let outline_panel = outline_panel(&workspace, cx);
5565        outline_panel.update_in(cx, |outline_panel, window, cx| {
5566            outline_panel.set_active(true, window, cx)
5567        });
5568
5569        workspace
5570            .update(cx, |workspace, window, cx| {
5571                ProjectSearchView::deploy_search(
5572                    workspace,
5573                    &workspace::DeploySearch::default(),
5574                    window,
5575                    cx,
5576                )
5577            })
5578            .unwrap();
5579        let search_view = workspace
5580            .update(cx, |workspace, _, cx| {
5581                workspace
5582                    .active_pane()
5583                    .read(cx)
5584                    .items()
5585                    .find_map(|item| item.downcast::<ProjectSearchView>())
5586                    .expect("Project search view expected to appear after new search event trigger")
5587            })
5588            .unwrap();
5589
5590        let query = "param_names_for_lifetime_elision_hints";
5591        perform_project_search(&search_view, query, cx);
5592        search_view.update(cx, |search_view, cx| {
5593            search_view
5594                .results_editor()
5595                .update(cx, |results_editor, cx| {
5596                    assert_eq!(
5597                        results_editor.display_text(cx).match_indices(query).count(),
5598                        9
5599                    );
5600                });
5601        });
5602        let all_matches = r#"rust-analyzer/
5603  crates/
5604    ide/src/
5605      inlay_hints/
5606        fn_lifetime_fn.rs
5607          search: match config.«param_names_for_lifetime_elision_hints» {
5608          search: allocated_lifetimes.push(if config.«param_names_for_lifetime_elision_hints» {
5609          search: Some(it) if config.«param_names_for_lifetime_elision_hints» => {
5610          search: InlayHintsConfig { «param_names_for_lifetime_elision_hints»: true, ..TEST_CONFIG },
5611      inlay_hints.rs
5612        search: pub «param_names_for_lifetime_elision_hints»: bool,
5613        search: «param_names_for_lifetime_elision_hints»: self
5614      static_index.rs
5615        search: «param_names_for_lifetime_elision_hints»: false,
5616    rust-analyzer/src/
5617      cli/
5618        analysis_stats.rs
5619          search: «param_names_for_lifetime_elision_hints»: true,
5620      config.rs
5621        search: «param_names_for_lifetime_elision_hints»: self"#
5622            .to_string();
5623
5624        cx.executor()
5625            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5626        cx.run_until_parked();
5627        outline_panel.update(cx, |outline_panel, cx| {
5628            assert_eq!(
5629                display_entries(
5630                    &project,
5631                    &snapshot(outline_panel, cx),
5632                    &outline_panel.cached_entries,
5633                    None,
5634                    cx,
5635                ),
5636                all_matches,
5637            );
5638        });
5639
5640        let filter_text = "a";
5641        outline_panel.update_in(cx, |outline_panel, window, cx| {
5642            outline_panel.filter_editor.update(cx, |filter_editor, cx| {
5643                filter_editor.set_text(filter_text, window, cx);
5644            });
5645        });
5646        cx.executor()
5647            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5648        cx.run_until_parked();
5649
5650        outline_panel.update(cx, |outline_panel, cx| {
5651            assert_eq!(
5652                display_entries(
5653                    &project,
5654                    &snapshot(outline_panel, cx),
5655                    &outline_panel.cached_entries,
5656                    None,
5657                    cx,
5658                ),
5659                all_matches
5660                    .lines()
5661                    .skip(1) // `/rust-analyzer/` is a root entry with path `` and it will be filtered out
5662                    .filter(|item| item.contains(filter_text))
5663                    .collect::<Vec<_>>()
5664                    .join("\n"),
5665            );
5666        });
5667
5668        outline_panel.update_in(cx, |outline_panel, window, cx| {
5669            outline_panel.filter_editor.update(cx, |filter_editor, cx| {
5670                filter_editor.set_text("", window, cx);
5671            });
5672        });
5673        cx.executor()
5674            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5675        cx.run_until_parked();
5676        outline_panel.update(cx, |outline_panel, cx| {
5677            assert_eq!(
5678                display_entries(
5679                    &project,
5680                    &snapshot(outline_panel, cx),
5681                    &outline_panel.cached_entries,
5682                    None,
5683                    cx,
5684                ),
5685                all_matches,
5686            );
5687        });
5688    }
5689
5690    #[gpui::test(iterations = 10)]
5691    async fn test_item_opening(cx: &mut TestAppContext) {
5692        init_test(cx);
5693
5694        let fs = FakeFs::new(cx.background_executor.clone());
5695        let root = path!("/rust-analyzer");
5696        populate_with_test_ra_project(&fs, root).await;
5697        let project = Project::test(fs.clone(), [Path::new(root)], cx).await;
5698        project.read_with(cx, |project, _| project.languages().add(rust_lang()));
5699        let workspace = add_outline_panel(&project, cx).await;
5700        let cx = &mut VisualTestContext::from_window(*workspace, cx);
5701        let outline_panel = outline_panel(&workspace, cx);
5702        outline_panel.update_in(cx, |outline_panel, window, cx| {
5703            outline_panel.set_active(true, window, cx)
5704        });
5705
5706        workspace
5707            .update(cx, |workspace, window, cx| {
5708                ProjectSearchView::deploy_search(
5709                    workspace,
5710                    &workspace::DeploySearch::default(),
5711                    window,
5712                    cx,
5713                )
5714            })
5715            .unwrap();
5716        let search_view = workspace
5717            .update(cx, |workspace, _, cx| {
5718                workspace
5719                    .active_pane()
5720                    .read(cx)
5721                    .items()
5722                    .find_map(|item| item.downcast::<ProjectSearchView>())
5723                    .expect("Project search view expected to appear after new search event trigger")
5724            })
5725            .unwrap();
5726
5727        let query = "param_names_for_lifetime_elision_hints";
5728        perform_project_search(&search_view, query, cx);
5729        search_view.update(cx, |search_view, cx| {
5730            search_view
5731                .results_editor()
5732                .update(cx, |results_editor, cx| {
5733                    assert_eq!(
5734                        results_editor.display_text(cx).match_indices(query).count(),
5735                        9
5736                    );
5737                });
5738        });
5739        let all_matches = r#"rust-analyzer/
5740  crates/
5741    ide/src/
5742      inlay_hints/
5743        fn_lifetime_fn.rs
5744          search: match config.«param_names_for_lifetime_elision_hints» {
5745          search: allocated_lifetimes.push(if config.«param_names_for_lifetime_elision_hints» {
5746          search: Some(it) if config.«param_names_for_lifetime_elision_hints» => {
5747          search: InlayHintsConfig { «param_names_for_lifetime_elision_hints»: true, ..TEST_CONFIG },
5748      inlay_hints.rs
5749        search: pub «param_names_for_lifetime_elision_hints»: bool,
5750        search: «param_names_for_lifetime_elision_hints»: self
5751      static_index.rs
5752        search: «param_names_for_lifetime_elision_hints»: false,
5753    rust-analyzer/src/
5754      cli/
5755        analysis_stats.rs
5756          search: «param_names_for_lifetime_elision_hints»: true,
5757      config.rs
5758        search: «param_names_for_lifetime_elision_hints»: self"#
5759            .to_string();
5760        let select_first_in_all_matches = |line_to_select: &str| {
5761            assert!(
5762                all_matches.contains(line_to_select),
5763                "`{line_to_select}` was not found in all matches `{all_matches}`"
5764            );
5765            all_matches.replacen(
5766                line_to_select,
5767                &format!("{line_to_select}{SELECTED_MARKER}"),
5768                1,
5769            )
5770        };
5771        let clear_outline_metadata = |input: &str| {
5772            input
5773                .replace("search: ", "")
5774                .replace("«", "")
5775                .replace("»", "")
5776        };
5777
5778        cx.executor()
5779            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5780        cx.run_until_parked();
5781
5782        let active_editor = outline_panel.read_with(cx, |outline_panel, _| {
5783            outline_panel
5784                .active_editor()
5785                .expect("should have an active editor open")
5786        });
5787        let initial_outline_selection =
5788            "search: match config.«param_names_for_lifetime_elision_hints» {";
5789        outline_panel.update_in(cx, |outline_panel, window, cx| {
5790            assert_eq!(
5791                display_entries(
5792                    &project,
5793                    &snapshot(outline_panel, cx),
5794                    &outline_panel.cached_entries,
5795                    outline_panel.selected_entry(),
5796                    cx,
5797                ),
5798                select_first_in_all_matches(initial_outline_selection)
5799            );
5800            assert_eq!(
5801                selected_row_text(&active_editor, cx),
5802                clear_outline_metadata(initial_outline_selection),
5803                "Should place the initial editor selection on the corresponding search result"
5804            );
5805
5806            outline_panel.select_next(&SelectNext, window, cx);
5807            outline_panel.select_next(&SelectNext, window, cx);
5808        });
5809
5810        let navigated_outline_selection =
5811            "search: Some(it) if config.«param_names_for_lifetime_elision_hints» => {";
5812        outline_panel.update(cx, |outline_panel, cx| {
5813            assert_eq!(
5814                display_entries(
5815                    &project,
5816                    &snapshot(outline_panel, cx),
5817                    &outline_panel.cached_entries,
5818                    outline_panel.selected_entry(),
5819                    cx,
5820                ),
5821                select_first_in_all_matches(navigated_outline_selection)
5822            );
5823        });
5824        cx.executor()
5825            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5826        outline_panel.update(cx, |_, cx| {
5827            assert_eq!(
5828                selected_row_text(&active_editor, cx),
5829                clear_outline_metadata(navigated_outline_selection),
5830                "Should still have the initial caret position after SelectNext calls"
5831            );
5832        });
5833
5834        outline_panel.update_in(cx, |outline_panel, window, cx| {
5835            outline_panel.open_selected_entry(&OpenSelectedEntry, window, cx);
5836        });
5837        outline_panel.update(cx, |_outline_panel, cx| {
5838            assert_eq!(
5839                selected_row_text(&active_editor, cx),
5840                clear_outline_metadata(navigated_outline_selection),
5841                "After opening, should move the caret to the opened outline entry's position"
5842            );
5843        });
5844
5845        outline_panel.update_in(cx, |outline_panel, window, cx| {
5846            outline_panel.select_next(&SelectNext, window, cx);
5847        });
5848        let next_navigated_outline_selection = "search: InlayHintsConfig { «param_names_for_lifetime_elision_hints»: true, ..TEST_CONFIG },";
5849        outline_panel.update(cx, |outline_panel, cx| {
5850            assert_eq!(
5851                display_entries(
5852                    &project,
5853                    &snapshot(outline_panel, cx),
5854                    &outline_panel.cached_entries,
5855                    outline_panel.selected_entry(),
5856                    cx,
5857                ),
5858                select_first_in_all_matches(next_navigated_outline_selection)
5859            );
5860        });
5861        cx.executor()
5862            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5863        outline_panel.update(cx, |_outline_panel, cx| {
5864            assert_eq!(
5865                selected_row_text(&active_editor, cx),
5866                clear_outline_metadata(next_navigated_outline_selection),
5867                "Should again preserve the selection after another SelectNext call"
5868            );
5869        });
5870
5871        outline_panel.update_in(cx, |outline_panel, window, cx| {
5872            outline_panel.open_excerpts(&editor::actions::OpenExcerpts, window, cx);
5873        });
5874        cx.executor()
5875            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5876        cx.run_until_parked();
5877        let new_active_editor = outline_panel.read_with(cx, |outline_panel, _| {
5878            outline_panel
5879                .active_editor()
5880                .expect("should have an active editor open")
5881        });
5882        outline_panel.update(cx, |outline_panel, cx| {
5883            assert_ne!(
5884                active_editor, new_active_editor,
5885                "After opening an excerpt, new editor should be open"
5886            );
5887            assert_eq!(
5888                display_entries(
5889                    &project,
5890                    &snapshot(outline_panel, cx),
5891                    &outline_panel.cached_entries,
5892                    outline_panel.selected_entry(),
5893                    cx,
5894                ),
5895                "outline: pub(super) fn hints
5896outline: fn hints_lifetimes_named  <==== selected"
5897            );
5898            assert_eq!(
5899                selected_row_text(&new_active_editor, cx),
5900                clear_outline_metadata(next_navigated_outline_selection),
5901                "When opening the excerpt, should navigate to the place corresponding the outline entry"
5902            );
5903        });
5904    }
5905
5906    #[gpui::test]
5907    async fn test_multiple_worktrees(cx: &mut TestAppContext) {
5908        init_test(cx);
5909
5910        let fs = FakeFs::new(cx.background_executor.clone());
5911        fs.insert_tree(
5912            path!("/root"),
5913            json!({
5914                "one": {
5915                    "a.txt": "aaa aaa"
5916                },
5917                "two": {
5918                    "b.txt": "a aaa"
5919                }
5920
5921            }),
5922        )
5923        .await;
5924        let project = Project::test(fs.clone(), [Path::new(path!("/root/one"))], cx).await;
5925        let workspace = add_outline_panel(&project, cx).await;
5926        let cx = &mut VisualTestContext::from_window(*workspace, cx);
5927        let outline_panel = outline_panel(&workspace, cx);
5928        outline_panel.update_in(cx, |outline_panel, window, cx| {
5929            outline_panel.set_active(true, window, cx)
5930        });
5931
5932        let items = workspace
5933            .update(cx, |workspace, window, cx| {
5934                workspace.open_paths(
5935                    vec![PathBuf::from(path!("/root/two"))],
5936                    OpenOptions {
5937                        visible: Some(OpenVisible::OnlyDirectories),
5938                        ..Default::default()
5939                    },
5940                    None,
5941                    window,
5942                    cx,
5943                )
5944            })
5945            .unwrap()
5946            .await;
5947        assert_eq!(items.len(), 1, "Were opening another worktree directory");
5948        assert!(
5949            items[0].is_none(),
5950            "Directory should be opened successfully"
5951        );
5952
5953        workspace
5954            .update(cx, |workspace, window, cx| {
5955                ProjectSearchView::deploy_search(
5956                    workspace,
5957                    &workspace::DeploySearch::default(),
5958                    window,
5959                    cx,
5960                )
5961            })
5962            .unwrap();
5963        let search_view = workspace
5964            .update(cx, |workspace, _, cx| {
5965                workspace
5966                    .active_pane()
5967                    .read(cx)
5968                    .items()
5969                    .find_map(|item| item.downcast::<ProjectSearchView>())
5970                    .expect("Project search view expected to appear after new search event trigger")
5971            })
5972            .unwrap();
5973
5974        let query = "aaa";
5975        perform_project_search(&search_view, query, cx);
5976        search_view.update(cx, |search_view, cx| {
5977            search_view
5978                .results_editor()
5979                .update(cx, |results_editor, cx| {
5980                    assert_eq!(
5981                        results_editor.display_text(cx).match_indices(query).count(),
5982                        3
5983                    );
5984                });
5985        });
5986
5987        cx.executor()
5988            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5989        cx.run_until_parked();
5990        outline_panel.update(cx, |outline_panel, cx| {
5991            assert_eq!(
5992                display_entries(
5993                    &project,
5994                    &snapshot(outline_panel, cx),
5995                    &outline_panel.cached_entries,
5996                    outline_panel.selected_entry(),
5997                    cx,
5998                ),
5999                format!(
6000                    r#"one/
6001  a.txt
6002    search: «aaa» aaa  <==== selected
6003    search: aaa «aaa»
6004two/
6005  b.txt
6006    search: a «aaa»"#,
6007                ),
6008            );
6009        });
6010
6011        outline_panel.update_in(cx, |outline_panel, window, cx| {
6012            outline_panel.select_previous(&SelectPrevious, window, cx);
6013            outline_panel.collapse_selected_entry(&CollapseSelectedEntry, window, cx);
6014        });
6015        cx.executor()
6016            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6017        cx.run_until_parked();
6018        outline_panel.update(cx, |outline_panel, cx| {
6019            assert_eq!(
6020                display_entries(
6021                    &project,
6022                    &snapshot(outline_panel, cx),
6023                    &outline_panel.cached_entries,
6024                    outline_panel.selected_entry(),
6025                    cx,
6026                ),
6027                format!(
6028                    r#"one/
6029  a.txt  <==== selected
6030two/
6031  b.txt
6032    search: a «aaa»"#,
6033                ),
6034            );
6035        });
6036
6037        outline_panel.update_in(cx, |outline_panel, window, cx| {
6038            outline_panel.select_next(&SelectNext, window, cx);
6039            outline_panel.collapse_selected_entry(&CollapseSelectedEntry, window, cx);
6040        });
6041        cx.executor()
6042            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6043        cx.run_until_parked();
6044        outline_panel.update(cx, |outline_panel, cx| {
6045            assert_eq!(
6046                display_entries(
6047                    &project,
6048                    &snapshot(outline_panel, cx),
6049                    &outline_panel.cached_entries,
6050                    outline_panel.selected_entry(),
6051                    cx,
6052                ),
6053                format!(
6054                    r#"one/
6055  a.txt
6056two/  <==== selected"#,
6057                ),
6058            );
6059        });
6060
6061        outline_panel.update_in(cx, |outline_panel, window, cx| {
6062            outline_panel.expand_selected_entry(&ExpandSelectedEntry, window, cx);
6063        });
6064        cx.executor()
6065            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6066        cx.run_until_parked();
6067        outline_panel.update(cx, |outline_panel, cx| {
6068            assert_eq!(
6069                display_entries(
6070                    &project,
6071                    &snapshot(outline_panel, cx),
6072                    &outline_panel.cached_entries,
6073                    outline_panel.selected_entry(),
6074                    cx,
6075                ),
6076                format!(
6077                    r#"one/
6078  a.txt
6079two/  <==== selected
6080  b.txt
6081    search: a «aaa»"#,
6082                )
6083            );
6084        });
6085    }
6086
6087    #[gpui::test]
6088    async fn test_navigating_in_singleton(cx: &mut TestAppContext) {
6089        init_test(cx);
6090
6091        let root = path!("/root");
6092        let fs = FakeFs::new(cx.background_executor.clone());
6093        fs.insert_tree(
6094            root,
6095            json!({
6096                "src": {
6097                    "lib.rs": indoc!("
6098#[derive(Clone, Debug, PartialEq, Eq, Hash)]
6099struct OutlineEntryExcerpt {
6100    id: ExcerptId,
6101    buffer_id: BufferId,
6102    range: ExcerptRange<language::Anchor>,
6103}"),
6104                }
6105            }),
6106        )
6107        .await;
6108        let project = Project::test(fs.clone(), [Path::new(root)], cx).await;
6109        project.read_with(cx, |project, _| project.languages().add(rust_lang()));
6110        let workspace = add_outline_panel(&project, cx).await;
6111        let cx = &mut VisualTestContext::from_window(*workspace, cx);
6112        let outline_panel = outline_panel(&workspace, cx);
6113        cx.update(|window, cx| {
6114            outline_panel.update(cx, |outline_panel, cx| {
6115                outline_panel.set_active(true, window, cx)
6116            });
6117        });
6118
6119        let _editor = workspace
6120            .update(cx, |workspace, window, cx| {
6121                workspace.open_abs_path(
6122                    PathBuf::from(path!("/root/src/lib.rs")),
6123                    OpenOptions {
6124                        visible: Some(OpenVisible::All),
6125                        ..Default::default()
6126                    },
6127                    window,
6128                    cx,
6129                )
6130            })
6131            .unwrap()
6132            .await
6133            .expect("Failed to open Rust source file")
6134            .downcast::<Editor>()
6135            .expect("Should open an editor for Rust source file");
6136
6137        cx.executor()
6138            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6139        cx.run_until_parked();
6140        outline_panel.update(cx, |outline_panel, cx| {
6141            assert_eq!(
6142                display_entries(
6143                    &project,
6144                    &snapshot(outline_panel, cx),
6145                    &outline_panel.cached_entries,
6146                    outline_panel.selected_entry(),
6147                    cx,
6148                ),
6149                indoc!(
6150                    "
6151outline: struct OutlineEntryExcerpt
6152  outline: id
6153  outline: buffer_id
6154  outline: range"
6155                )
6156            );
6157        });
6158
6159        cx.update(|window, cx| {
6160            outline_panel.update(cx, |outline_panel, cx| {
6161                outline_panel.select_next(&SelectNext, window, cx);
6162            });
6163        });
6164        cx.executor()
6165            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6166        cx.run_until_parked();
6167        outline_panel.update(cx, |outline_panel, cx| {
6168            assert_eq!(
6169                display_entries(
6170                    &project,
6171                    &snapshot(outline_panel, cx),
6172                    &outline_panel.cached_entries,
6173                    outline_panel.selected_entry(),
6174                    cx,
6175                ),
6176                indoc!(
6177                    "
6178outline: struct OutlineEntryExcerpt  <==== selected
6179  outline: id
6180  outline: buffer_id
6181  outline: range"
6182                )
6183            );
6184        });
6185
6186        cx.update(|window, cx| {
6187            outline_panel.update(cx, |outline_panel, cx| {
6188                outline_panel.select_next(&SelectNext, window, cx);
6189            });
6190        });
6191        cx.executor()
6192            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6193        cx.run_until_parked();
6194        outline_panel.update(cx, |outline_panel, cx| {
6195            assert_eq!(
6196                display_entries(
6197                    &project,
6198                    &snapshot(outline_panel, cx),
6199                    &outline_panel.cached_entries,
6200                    outline_panel.selected_entry(),
6201                    cx,
6202                ),
6203                indoc!(
6204                    "
6205outline: struct OutlineEntryExcerpt
6206  outline: id  <==== selected
6207  outline: buffer_id
6208  outline: range"
6209                )
6210            );
6211        });
6212
6213        cx.update(|window, cx| {
6214            outline_panel.update(cx, |outline_panel, cx| {
6215                outline_panel.select_next(&SelectNext, window, cx);
6216            });
6217        });
6218        cx.executor()
6219            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6220        cx.run_until_parked();
6221        outline_panel.update(cx, |outline_panel, cx| {
6222            assert_eq!(
6223                display_entries(
6224                    &project,
6225                    &snapshot(outline_panel, cx),
6226                    &outline_panel.cached_entries,
6227                    outline_panel.selected_entry(),
6228                    cx,
6229                ),
6230                indoc!(
6231                    "
6232outline: struct OutlineEntryExcerpt
6233  outline: id
6234  outline: buffer_id  <==== selected
6235  outline: range"
6236                )
6237            );
6238        });
6239
6240        cx.update(|window, cx| {
6241            outline_panel.update(cx, |outline_panel, cx| {
6242                outline_panel.select_next(&SelectNext, window, cx);
6243            });
6244        });
6245        cx.executor()
6246            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6247        cx.run_until_parked();
6248        outline_panel.update(cx, |outline_panel, cx| {
6249            assert_eq!(
6250                display_entries(
6251                    &project,
6252                    &snapshot(outline_panel, cx),
6253                    &outline_panel.cached_entries,
6254                    outline_panel.selected_entry(),
6255                    cx,
6256                ),
6257                indoc!(
6258                    "
6259outline: struct OutlineEntryExcerpt
6260  outline: id
6261  outline: buffer_id
6262  outline: range  <==== selected"
6263                )
6264            );
6265        });
6266
6267        cx.update(|window, cx| {
6268            outline_panel.update(cx, |outline_panel, cx| {
6269                outline_panel.select_next(&SelectNext, window, cx);
6270            });
6271        });
6272        cx.executor()
6273            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6274        cx.run_until_parked();
6275        outline_panel.update(cx, |outline_panel, cx| {
6276            assert_eq!(
6277                display_entries(
6278                    &project,
6279                    &snapshot(outline_panel, cx),
6280                    &outline_panel.cached_entries,
6281                    outline_panel.selected_entry(),
6282                    cx,
6283                ),
6284                indoc!(
6285                    "
6286outline: struct OutlineEntryExcerpt  <==== selected
6287  outline: id
6288  outline: buffer_id
6289  outline: range"
6290                )
6291            );
6292        });
6293
6294        cx.update(|window, cx| {
6295            outline_panel.update(cx, |outline_panel, cx| {
6296                outline_panel.select_previous(&SelectPrevious, window, cx);
6297            });
6298        });
6299        cx.executor()
6300            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6301        cx.run_until_parked();
6302        outline_panel.update(cx, |outline_panel, cx| {
6303            assert_eq!(
6304                display_entries(
6305                    &project,
6306                    &snapshot(outline_panel, cx),
6307                    &outline_panel.cached_entries,
6308                    outline_panel.selected_entry(),
6309                    cx,
6310                ),
6311                indoc!(
6312                    "
6313outline: struct OutlineEntryExcerpt
6314  outline: id
6315  outline: buffer_id
6316  outline: range  <==== selected"
6317                )
6318            );
6319        });
6320
6321        cx.update(|window, cx| {
6322            outline_panel.update(cx, |outline_panel, cx| {
6323                outline_panel.select_previous(&SelectPrevious, window, cx);
6324            });
6325        });
6326        cx.executor()
6327            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6328        cx.run_until_parked();
6329        outline_panel.update(cx, |outline_panel, cx| {
6330            assert_eq!(
6331                display_entries(
6332                    &project,
6333                    &snapshot(outline_panel, cx),
6334                    &outline_panel.cached_entries,
6335                    outline_panel.selected_entry(),
6336                    cx,
6337                ),
6338                indoc!(
6339                    "
6340outline: struct OutlineEntryExcerpt
6341  outline: id
6342  outline: buffer_id  <==== selected
6343  outline: range"
6344                )
6345            );
6346        });
6347
6348        cx.update(|window, cx| {
6349            outline_panel.update(cx, |outline_panel, cx| {
6350                outline_panel.select_previous(&SelectPrevious, window, cx);
6351            });
6352        });
6353        cx.executor()
6354            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6355        cx.run_until_parked();
6356        outline_panel.update(cx, |outline_panel, cx| {
6357            assert_eq!(
6358                display_entries(
6359                    &project,
6360                    &snapshot(outline_panel, cx),
6361                    &outline_panel.cached_entries,
6362                    outline_panel.selected_entry(),
6363                    cx,
6364                ),
6365                indoc!(
6366                    "
6367outline: struct OutlineEntryExcerpt
6368  outline: id  <==== selected
6369  outline: buffer_id
6370  outline: range"
6371                )
6372            );
6373        });
6374
6375        cx.update(|window, cx| {
6376            outline_panel.update(cx, |outline_panel, cx| {
6377                outline_panel.select_previous(&SelectPrevious, window, cx);
6378            });
6379        });
6380        cx.executor()
6381            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6382        cx.run_until_parked();
6383        outline_panel.update(cx, |outline_panel, cx| {
6384            assert_eq!(
6385                display_entries(
6386                    &project,
6387                    &snapshot(outline_panel, cx),
6388                    &outline_panel.cached_entries,
6389                    outline_panel.selected_entry(),
6390                    cx,
6391                ),
6392                indoc!(
6393                    "
6394outline: struct OutlineEntryExcerpt  <==== selected
6395  outline: id
6396  outline: buffer_id
6397  outline: range"
6398                )
6399            );
6400        });
6401
6402        cx.update(|window, cx| {
6403            outline_panel.update(cx, |outline_panel, cx| {
6404                outline_panel.select_previous(&SelectPrevious, window, cx);
6405            });
6406        });
6407        cx.executor()
6408            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6409        cx.run_until_parked();
6410        outline_panel.update(cx, |outline_panel, cx| {
6411            assert_eq!(
6412                display_entries(
6413                    &project,
6414                    &snapshot(outline_panel, cx),
6415                    &outline_panel.cached_entries,
6416                    outline_panel.selected_entry(),
6417                    cx,
6418                ),
6419                indoc!(
6420                    "
6421outline: struct OutlineEntryExcerpt
6422  outline: id
6423  outline: buffer_id
6424  outline: range  <==== selected"
6425                )
6426            );
6427        });
6428    }
6429
6430    #[gpui::test(iterations = 10)]
6431    async fn test_frontend_repo_structure(cx: &mut TestAppContext) {
6432        init_test(cx);
6433
6434        let root = path!("/frontend-project");
6435        let fs = FakeFs::new(cx.background_executor.clone());
6436        fs.insert_tree(
6437            root,
6438            json!({
6439                "public": {
6440                    "lottie": {
6441                        "syntax-tree.json": r#"{ "something": "static" }"#
6442                    }
6443                },
6444                "src": {
6445                    "app": {
6446                        "(site)": {
6447                            "(about)": {
6448                                "jobs": {
6449                                    "[slug]": {
6450                                        "page.tsx": r#"static"#
6451                                    }
6452                                }
6453                            },
6454                            "(blog)": {
6455                                "post": {
6456                                    "[slug]": {
6457                                        "page.tsx": r#"static"#
6458                                    }
6459                                }
6460                            },
6461                        }
6462                    },
6463                    "components": {
6464                        "ErrorBoundary.tsx": r#"static"#,
6465                    }
6466                }
6467
6468            }),
6469        )
6470        .await;
6471        let project = Project::test(fs.clone(), [Path::new(root)], cx).await;
6472        let workspace = add_outline_panel(&project, cx).await;
6473        let cx = &mut VisualTestContext::from_window(*workspace, cx);
6474        let outline_panel = outline_panel(&workspace, cx);
6475        outline_panel.update_in(cx, |outline_panel, window, cx| {
6476            outline_panel.set_active(true, window, cx)
6477        });
6478
6479        workspace
6480            .update(cx, |workspace, window, cx| {
6481                ProjectSearchView::deploy_search(
6482                    workspace,
6483                    &workspace::DeploySearch::default(),
6484                    window,
6485                    cx,
6486                )
6487            })
6488            .unwrap();
6489        let search_view = workspace
6490            .update(cx, |workspace, _, cx| {
6491                workspace
6492                    .active_pane()
6493                    .read(cx)
6494                    .items()
6495                    .find_map(|item| item.downcast::<ProjectSearchView>())
6496                    .expect("Project search view expected to appear after new search event trigger")
6497            })
6498            .unwrap();
6499
6500        let query = "static";
6501        perform_project_search(&search_view, query, cx);
6502        search_view.update(cx, |search_view, cx| {
6503            search_view
6504                .results_editor()
6505                .update(cx, |results_editor, cx| {
6506                    assert_eq!(
6507                        results_editor.display_text(cx).match_indices(query).count(),
6508                        4
6509                    );
6510                });
6511        });
6512
6513        cx.executor()
6514            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6515        cx.run_until_parked();
6516        outline_panel.update(cx, |outline_panel, cx| {
6517            assert_eq!(
6518                display_entries(
6519                    &project,
6520                    &snapshot(outline_panel, cx),
6521                    &outline_panel.cached_entries,
6522                    outline_panel.selected_entry(),
6523                    cx,
6524                ),
6525                format!(
6526                    r#"frontend-project/
6527  public/lottie/
6528    syntax-tree.json
6529      search: {{ "something": "«static»" }}  <==== selected
6530  src/
6531    app/(site)/
6532      (about)/jobs/[slug]/
6533        page.tsx
6534          search: «static»
6535      (blog)/post/[slug]/
6536        page.tsx
6537          search: «static»
6538    components/
6539      ErrorBoundary.tsx
6540        search: «static»"#
6541                )
6542            );
6543        });
6544
6545        outline_panel.update_in(cx, |outline_panel, window, cx| {
6546            // Move to 5th element in the list, 3 items down.
6547            for _ in 0..2 {
6548                outline_panel.select_next(&SelectNext, window, cx);
6549            }
6550            outline_panel.collapse_selected_entry(&CollapseSelectedEntry, window, cx);
6551        });
6552        cx.executor()
6553            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6554        cx.run_until_parked();
6555        outline_panel.update(cx, |outline_panel, cx| {
6556            assert_eq!(
6557                display_entries(
6558                    &project,
6559                    &snapshot(outline_panel, cx),
6560                    &outline_panel.cached_entries,
6561                    outline_panel.selected_entry(),
6562                    cx,
6563                ),
6564                format!(
6565                    r#"frontend-project/
6566  public/lottie/
6567    syntax-tree.json
6568      search: {{ "something": "«static»" }}
6569  src/
6570    app/(site)/  <==== selected
6571    components/
6572      ErrorBoundary.tsx
6573        search: «static»"#
6574                )
6575            );
6576        });
6577
6578        outline_panel.update_in(cx, |outline_panel, window, cx| {
6579            // Move to the next visible non-FS entry
6580            for _ in 0..3 {
6581                outline_panel.select_next(&SelectNext, window, cx);
6582            }
6583        });
6584        cx.run_until_parked();
6585        outline_panel.update(cx, |outline_panel, cx| {
6586            assert_eq!(
6587                display_entries(
6588                    &project,
6589                    &snapshot(outline_panel, cx),
6590                    &outline_panel.cached_entries,
6591                    outline_panel.selected_entry(),
6592                    cx,
6593                ),
6594                format!(
6595                    r#"frontend-project/
6596  public/lottie/
6597    syntax-tree.json
6598      search: {{ "something": "«static»" }}
6599  src/
6600    app/(site)/
6601    components/
6602      ErrorBoundary.tsx
6603        search: «static»  <==== selected"#
6604                )
6605            );
6606        });
6607
6608        outline_panel.update_in(cx, |outline_panel, window, cx| {
6609            outline_panel
6610                .active_editor()
6611                .expect("Should have an active editor")
6612                .update(cx, |editor, cx| {
6613                    editor.toggle_fold(&editor::actions::ToggleFold, window, cx)
6614                });
6615        });
6616        cx.executor()
6617            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6618        cx.run_until_parked();
6619        outline_panel.update(cx, |outline_panel, cx| {
6620            assert_eq!(
6621                display_entries(
6622                    &project,
6623                    &snapshot(outline_panel, cx),
6624                    &outline_panel.cached_entries,
6625                    outline_panel.selected_entry(),
6626                    cx,
6627                ),
6628                format!(
6629                    r#"frontend-project/
6630  public/lottie/
6631    syntax-tree.json
6632      search: {{ "something": "«static»" }}
6633  src/
6634    app/(site)/
6635    components/
6636      ErrorBoundary.tsx  <==== selected"#
6637                )
6638            );
6639        });
6640
6641        outline_panel.update_in(cx, |outline_panel, window, cx| {
6642            outline_panel
6643                .active_editor()
6644                .expect("Should have an active editor")
6645                .update(cx, |editor, cx| {
6646                    editor.toggle_fold(&editor::actions::ToggleFold, window, cx)
6647                });
6648        });
6649        cx.executor()
6650            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6651        cx.run_until_parked();
6652        outline_panel.update(cx, |outline_panel, cx| {
6653            assert_eq!(
6654                display_entries(
6655                    &project,
6656                    &snapshot(outline_panel, cx),
6657                    &outline_panel.cached_entries,
6658                    outline_panel.selected_entry(),
6659                    cx,
6660                ),
6661                format!(
6662                    r#"frontend-project/
6663  public/lottie/
6664    syntax-tree.json
6665      search: {{ "something": "«static»" }}
6666  src/
6667    app/(site)/
6668    components/
6669      ErrorBoundary.tsx  <==== selected
6670        search: «static»"#
6671                )
6672            );
6673        });
6674
6675        outline_panel.update_in(cx, |outline_panel, window, cx| {
6676            outline_panel.collapse_all_entries(&CollapseAllEntries, window, cx);
6677        });
6678        cx.executor()
6679            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6680        cx.run_until_parked();
6681        outline_panel.update(cx, |outline_panel, cx| {
6682            assert_eq!(
6683                display_entries(
6684                    &project,
6685                    &snapshot(outline_panel, cx),
6686                    &outline_panel.cached_entries,
6687                    outline_panel.selected_entry(),
6688                    cx,
6689                ),
6690                format!(r#"frontend-project/"#)
6691            );
6692        });
6693
6694        outline_panel.update_in(cx, |outline_panel, window, cx| {
6695            outline_panel.expand_all_entries(&ExpandAllEntries, window, cx);
6696        });
6697        cx.executor()
6698            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6699        cx.run_until_parked();
6700        outline_panel.update(cx, |outline_panel, cx| {
6701            assert_eq!(
6702                display_entries(
6703                    &project,
6704                    &snapshot(outline_panel, cx),
6705                    &outline_panel.cached_entries,
6706                    outline_panel.selected_entry(),
6707                    cx,
6708                ),
6709                format!(
6710                    r#"frontend-project/
6711  public/lottie/
6712    syntax-tree.json
6713      search: {{ "something": "«static»" }}
6714  src/
6715    app/(site)/
6716      (about)/jobs/[slug]/
6717        page.tsx
6718          search: «static»
6719      (blog)/post/[slug]/
6720        page.tsx
6721          search: «static»
6722    components/
6723      ErrorBoundary.tsx  <==== selected
6724        search: «static»"#
6725                )
6726            );
6727        });
6728    }
6729
6730    async fn add_outline_panel(
6731        project: &Entity<Project>,
6732        cx: &mut TestAppContext,
6733    ) -> WindowHandle<Workspace> {
6734        let window = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
6735
6736        let outline_panel = window
6737            .update(cx, |_, window, cx| {
6738                cx.spawn_in(window, async |this, cx| {
6739                    OutlinePanel::load(this, cx.clone()).await
6740                })
6741            })
6742            .unwrap()
6743            .await
6744            .expect("Failed to load outline panel");
6745
6746        window
6747            .update(cx, |workspace, window, cx| {
6748                workspace.add_panel(outline_panel, window, cx);
6749            })
6750            .unwrap();
6751        window
6752    }
6753
6754    fn outline_panel(
6755        workspace: &WindowHandle<Workspace>,
6756        cx: &mut TestAppContext,
6757    ) -> Entity<OutlinePanel> {
6758        workspace
6759            .update(cx, |workspace, _, cx| {
6760                workspace
6761                    .panel::<OutlinePanel>(cx)
6762                    .expect("no outline panel")
6763            })
6764            .unwrap()
6765    }
6766
6767    fn display_entries(
6768        project: &Entity<Project>,
6769        multi_buffer_snapshot: &MultiBufferSnapshot,
6770        cached_entries: &[CachedEntry],
6771        selected_entry: Option<&PanelEntry>,
6772        cx: &mut App,
6773    ) -> String {
6774        let project = project.read(cx);
6775        let mut display_string = String::new();
6776        for entry in cached_entries {
6777            if !display_string.is_empty() {
6778                display_string += "\n";
6779            }
6780            for _ in 0..entry.depth {
6781                display_string += "  ";
6782            }
6783            display_string += &match &entry.entry {
6784                PanelEntry::Fs(entry) => match entry {
6785                    FsEntry::ExternalFile(_) => {
6786                        panic!("Did not cover external files with tests")
6787                    }
6788                    FsEntry::Directory(directory) => {
6789                        let path = if let Some(worktree) = project
6790                            .worktree_for_id(directory.worktree_id, cx)
6791                            .filter(|worktree| {
6792                                worktree.read(cx).root_entry() == Some(&directory.entry.entry)
6793                            }) {
6794                            worktree
6795                                .read(cx)
6796                                .root_name()
6797                                .join(&directory.entry.path)
6798                                .as_unix_str()
6799                                .to_string()
6800                        } else {
6801                            directory
6802                                .entry
6803                                .path
6804                                .file_name()
6805                                .unwrap_or_default()
6806                                .to_string()
6807                        };
6808                        format!("{path}/")
6809                    }
6810                    FsEntry::File(file) => file
6811                        .entry
6812                        .path
6813                        .file_name()
6814                        .map(|name| name.to_string())
6815                        .unwrap_or_default(),
6816                },
6817                PanelEntry::FoldedDirs(folded_dirs) => folded_dirs
6818                    .entries
6819                    .iter()
6820                    .filter_map(|dir| dir.path.file_name())
6821                    .map(|name| name.to_string() + "/")
6822                    .collect(),
6823                PanelEntry::Outline(outline_entry) => match outline_entry {
6824                    OutlineEntry::Excerpt(_) => continue,
6825                    OutlineEntry::Outline(outline_entry) => {
6826                        format!("outline: {}", outline_entry.outline.text)
6827                    }
6828                },
6829                PanelEntry::Search(search_entry) => {
6830                    let search_data = search_entry.render_data.get_or_init(|| {
6831                        SearchData::new(&search_entry.match_range, multi_buffer_snapshot)
6832                    });
6833                    let mut search_result = String::new();
6834                    let mut last_end = 0;
6835                    for range in &search_data.search_match_indices {
6836                        search_result.push_str(&search_data.context_text[last_end..range.start]);
6837                        search_result.push('«');
6838                        search_result.push_str(&search_data.context_text[range.start..range.end]);
6839                        search_result.push('»');
6840                        last_end = range.end;
6841                    }
6842                    search_result.push_str(&search_data.context_text[last_end..]);
6843
6844                    format!("search: {search_result}")
6845                }
6846            };
6847
6848            if Some(&entry.entry) == selected_entry {
6849                display_string += SELECTED_MARKER;
6850            }
6851        }
6852        display_string
6853    }
6854
6855    fn init_test(cx: &mut TestAppContext) {
6856        cx.update(|cx| {
6857            let settings = SettingsStore::test(cx);
6858            cx.set_global(settings);
6859
6860            theme::init(theme::LoadThemes::JustBase, cx);
6861
6862            editor::init(cx);
6863            project_search::init(cx);
6864            buffer_search::init(cx);
6865            super::init(cx);
6866        });
6867    }
6868
6869    // Based on https://github.com/rust-lang/rust-analyzer/
6870    async fn populate_with_test_ra_project(fs: &FakeFs, root: &str) {
6871        fs.insert_tree(
6872            root,
6873            json!({
6874                    "crates": {
6875                        "ide": {
6876                            "src": {
6877                                "inlay_hints": {
6878                                    "fn_lifetime_fn.rs": r##"
6879        pub(super) fn hints(
6880            acc: &mut Vec<InlayHint>,
6881            config: &InlayHintsConfig,
6882            func: ast::Fn,
6883        ) -> Option<()> {
6884            // ... snip
6885
6886            let mut used_names: FxHashMap<SmolStr, usize> =
6887                match config.param_names_for_lifetime_elision_hints {
6888                    true => generic_param_list
6889                        .iter()
6890                        .flat_map(|gpl| gpl.lifetime_params())
6891                        .filter_map(|param| param.lifetime())
6892                        .filter_map(|lt| Some((SmolStr::from(lt.text().as_str().get(1..)?), 0)))
6893                        .collect(),
6894                    false => Default::default(),
6895                };
6896            {
6897                let mut potential_lt_refs = potential_lt_refs.iter().filter(|&&(.., is_elided)| is_elided);
6898                if self_param.is_some() && potential_lt_refs.next().is_some() {
6899                    allocated_lifetimes.push(if config.param_names_for_lifetime_elision_hints {
6900                        // self can't be used as a lifetime, so no need to check for collisions
6901                        "'self".into()
6902                    } else {
6903                        gen_idx_name()
6904                    });
6905                }
6906                potential_lt_refs.for_each(|(name, ..)| {
6907                    let name = match name {
6908                        Some(it) if config.param_names_for_lifetime_elision_hints => {
6909                            if let Some(c) = used_names.get_mut(it.text().as_str()) {
6910                                *c += 1;
6911                                SmolStr::from(format!("'{text}{c}", text = it.text().as_str()))
6912                            } else {
6913                                used_names.insert(it.text().as_str().into(), 0);
6914                                SmolStr::from_iter(["\'", it.text().as_str()])
6915                            }
6916                        }
6917                        _ => gen_idx_name(),
6918                    };
6919                    allocated_lifetimes.push(name);
6920                });
6921            }
6922
6923            // ... snip
6924        }
6925
6926        // ... snip
6927
6928            #[test]
6929            fn hints_lifetimes_named() {
6930                check_with_config(
6931                    InlayHintsConfig { param_names_for_lifetime_elision_hints: true, ..TEST_CONFIG },
6932                    r#"
6933        fn nested_in<'named>(named: &        &X<      &()>) {}
6934        //          ^'named1, 'named2, 'named3, $
6935                                  //^'named1 ^'named2 ^'named3
6936        "#,
6937                );
6938            }
6939
6940        // ... snip
6941        "##,
6942                                },
6943                        "inlay_hints.rs": r#"
6944    #[derive(Clone, Debug, PartialEq, Eq)]
6945    pub struct InlayHintsConfig {
6946        // ... snip
6947        pub param_names_for_lifetime_elision_hints: bool,
6948        pub max_length: Option<usize>,
6949        // ... snip
6950    }
6951
6952    impl Config {
6953        pub fn inlay_hints(&self) -> InlayHintsConfig {
6954            InlayHintsConfig {
6955                // ... snip
6956                param_names_for_lifetime_elision_hints: self
6957                    .inlayHints_lifetimeElisionHints_useParameterNames()
6958                    .to_owned(),
6959                max_length: self.inlayHints_maxLength().to_owned(),
6960                // ... snip
6961            }
6962        }
6963    }
6964    "#,
6965                        "static_index.rs": r#"
6966// ... snip
6967        fn add_file(&mut self, file_id: FileId) {
6968            let current_crate = crates_for(self.db, file_id).pop().map(Into::into);
6969            let folds = self.analysis.folding_ranges(file_id).unwrap();
6970            let inlay_hints = self
6971                .analysis
6972                .inlay_hints(
6973                    &InlayHintsConfig {
6974                        // ... snip
6975                        closure_style: hir::ClosureStyle::ImplFn,
6976                        param_names_for_lifetime_elision_hints: false,
6977                        binding_mode_hints: false,
6978                        max_length: Some(25),
6979                        closure_capture_hints: false,
6980                        // ... snip
6981                    },
6982                    file_id,
6983                    None,
6984                )
6985                .unwrap();
6986            // ... snip
6987    }
6988// ... snip
6989    "#
6990                            }
6991                        },
6992                        "rust-analyzer": {
6993                            "src": {
6994                                "cli": {
6995                                    "analysis_stats.rs": r#"
6996        // ... snip
6997                for &file_id in &file_ids {
6998                    _ = analysis.inlay_hints(
6999                        &InlayHintsConfig {
7000                            // ... snip
7001                            implicit_drop_hints: true,
7002                            lifetime_elision_hints: ide::LifetimeElisionHints::Always,
7003                            param_names_for_lifetime_elision_hints: true,
7004                            hide_named_constructor_hints: false,
7005                            hide_closure_initialization_hints: false,
7006                            closure_style: hir::ClosureStyle::ImplFn,
7007                            max_length: Some(25),
7008                            closing_brace_hints_min_lines: Some(20),
7009                            fields_to_resolve: InlayFieldsToResolve::empty(),
7010                            range_exclusive_hints: true,
7011                        },
7012                        file_id.into(),
7013                        None,
7014                    );
7015                }
7016        // ... snip
7017                                    "#,
7018                                },
7019                                "config.rs": r#"
7020                config_data! {
7021                    /// Configs that only make sense when they are set by a client. As such they can only be defined
7022                    /// by setting them using client's settings (e.g `settings.json` on VS Code).
7023                    client: struct ClientDefaultConfigData <- ClientConfigInput -> {
7024                        // ... snip
7025                        /// Maximum length for inlay hints. Set to null to have an unlimited length.
7026                        inlayHints_maxLength: Option<usize>                        = Some(25),
7027                        // ... snip
7028                        /// Whether to prefer using parameter names as the name for elided lifetime hints if possible.
7029                        inlayHints_lifetimeElisionHints_useParameterNames: bool    = false,
7030                        // ... snip
7031                    }
7032                }
7033
7034                impl Config {
7035                    // ... snip
7036                    pub fn inlay_hints(&self) -> InlayHintsConfig {
7037                        InlayHintsConfig {
7038                            // ... snip
7039                            param_names_for_lifetime_elision_hints: self
7040                                .inlayHints_lifetimeElisionHints_useParameterNames()
7041                                .to_owned(),
7042                            max_length: self.inlayHints_maxLength().to_owned(),
7043                            // ... snip
7044                        }
7045                    }
7046                    // ... snip
7047                }
7048                "#
7049                                }
7050                        }
7051                    }
7052            }),
7053        )
7054        .await;
7055    }
7056
7057    fn snapshot(outline_panel: &OutlinePanel, cx: &App) -> MultiBufferSnapshot {
7058        outline_panel
7059            .active_editor()
7060            .unwrap()
7061            .read(cx)
7062            .buffer()
7063            .read(cx)
7064            .snapshot(cx)
7065    }
7066
7067    fn selected_row_text(editor: &Entity<Editor>, cx: &mut App) -> String {
7068        editor.update(cx, |editor, cx| {
7069            let selections = editor.selections.all::<language::Point>(&editor.display_snapshot(cx));
7070            assert_eq!(selections.len(), 1, "Active editor should have exactly one selection after any outline panel interactions");
7071            let selection = selections.first().unwrap();
7072            let multi_buffer_snapshot = editor.buffer().read(cx).snapshot(cx);
7073            let line_start = language::Point::new(selection.start.row, 0);
7074            let line_end = multi_buffer_snapshot.clip_point(language::Point::new(selection.end.row, u32::MAX), language::Bias::Right);
7075            multi_buffer_snapshot.text_for_range(line_start..line_end).collect::<String>().trim().to_owned()
7076        })
7077    }
7078
7079    #[gpui::test]
7080    async fn test_outline_keyboard_expand_collapse(cx: &mut TestAppContext) {
7081        init_test(cx);
7082
7083        let fs = FakeFs::new(cx.background_executor.clone());
7084        fs.insert_tree(
7085            "/test",
7086            json!({
7087                "src": {
7088                    "lib.rs": indoc!("
7089                            mod outer {
7090                                pub struct OuterStruct {
7091                                    field: String,
7092                                }
7093                                impl OuterStruct {
7094                                    pub fn new() -> Self {
7095                                        Self { field: String::new() }
7096                                    }
7097                                    pub fn method(&self) {
7098                                        println!(\"{}\", self.field);
7099                                    }
7100                                }
7101                                mod inner {
7102                                    pub fn inner_function() {
7103                                        let x = 42;
7104                                        println!(\"{}\", x);
7105                                    }
7106                                    pub struct InnerStruct {
7107                                        value: i32,
7108                                    }
7109                                }
7110                            }
7111                            fn main() {
7112                                let s = outer::OuterStruct::new();
7113                                s.method();
7114                            }
7115                        "),
7116                }
7117            }),
7118        )
7119        .await;
7120
7121        let project = Project::test(fs.clone(), ["/test".as_ref()], cx).await;
7122        project.read_with(cx, |project, _| project.languages().add(rust_lang()));
7123        let workspace = add_outline_panel(&project, cx).await;
7124        let cx = &mut VisualTestContext::from_window(*workspace, cx);
7125        let outline_panel = outline_panel(&workspace, cx);
7126
7127        outline_panel.update_in(cx, |outline_panel, window, cx| {
7128            outline_panel.set_active(true, window, cx)
7129        });
7130
7131        workspace
7132            .update(cx, |workspace, window, cx| {
7133                workspace.open_abs_path(
7134                    PathBuf::from("/test/src/lib.rs"),
7135                    OpenOptions {
7136                        visible: Some(OpenVisible::All),
7137                        ..Default::default()
7138                    },
7139                    window,
7140                    cx,
7141                )
7142            })
7143            .unwrap()
7144            .await
7145            .unwrap();
7146
7147        cx.executor()
7148            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(500));
7149        cx.run_until_parked();
7150
7151        // Force another update cycle to ensure outlines are fetched
7152        outline_panel.update_in(cx, |panel, window, cx| {
7153            panel.update_non_fs_items(window, cx);
7154            panel.update_cached_entries(Some(UPDATE_DEBOUNCE), window, cx);
7155        });
7156        cx.executor()
7157            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(500));
7158        cx.run_until_parked();
7159
7160        outline_panel.update(cx, |outline_panel, cx| {
7161            assert_eq!(
7162                display_entries(
7163                    &project,
7164                    &snapshot(outline_panel, cx),
7165                    &outline_panel.cached_entries,
7166                    outline_panel.selected_entry(),
7167                    cx,
7168                ),
7169                indoc!(
7170                    "
7171outline: mod outer  <==== selected
7172  outline: pub struct OuterStruct
7173    outline: field
7174  outline: impl OuterStruct
7175    outline: pub fn new
7176    outline: pub fn method
7177  outline: mod inner
7178    outline: pub fn inner_function
7179    outline: pub struct InnerStruct
7180      outline: value
7181outline: fn main"
7182                )
7183            );
7184        });
7185
7186        let parent_outline = outline_panel
7187            .read_with(cx, |panel, _cx| {
7188                panel
7189                    .cached_entries
7190                    .iter()
7191                    .find_map(|entry| match &entry.entry {
7192                        PanelEntry::Outline(OutlineEntry::Outline(outline))
7193                            if panel
7194                                .outline_children_cache
7195                                .get(&outline.buffer_id)
7196                                .and_then(|children_map| {
7197                                    let key =
7198                                        (outline.outline.range.clone(), outline.outline.depth);
7199                                    children_map.get(&key)
7200                                })
7201                                .copied()
7202                                .unwrap_or(false) =>
7203                        {
7204                            Some(entry.entry.clone())
7205                        }
7206                        _ => None,
7207                    })
7208            })
7209            .expect("Should find an outline with children");
7210
7211        outline_panel.update_in(cx, |panel, window, cx| {
7212            panel.select_entry(parent_outline.clone(), true, window, cx);
7213            panel.collapse_selected_entry(&CollapseSelectedEntry, window, cx);
7214        });
7215        cx.executor()
7216            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7217        cx.run_until_parked();
7218
7219        outline_panel.update(cx, |outline_panel, cx| {
7220            assert_eq!(
7221                display_entries(
7222                    &project,
7223                    &snapshot(outline_panel, cx),
7224                    &outline_panel.cached_entries,
7225                    outline_panel.selected_entry(),
7226                    cx,
7227                ),
7228                indoc!(
7229                    "
7230outline: mod outer  <==== selected
7231outline: fn main"
7232                )
7233            );
7234        });
7235
7236        outline_panel.update_in(cx, |panel, window, cx| {
7237            panel.expand_selected_entry(&ExpandSelectedEntry, window, cx);
7238        });
7239        cx.executor()
7240            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7241        cx.run_until_parked();
7242
7243        outline_panel.update(cx, |outline_panel, cx| {
7244            assert_eq!(
7245                display_entries(
7246                    &project,
7247                    &snapshot(outline_panel, cx),
7248                    &outline_panel.cached_entries,
7249                    outline_panel.selected_entry(),
7250                    cx,
7251                ),
7252                indoc!(
7253                    "
7254outline: mod outer  <==== selected
7255  outline: pub struct OuterStruct
7256    outline: field
7257  outline: impl OuterStruct
7258    outline: pub fn new
7259    outline: pub fn method
7260  outline: mod inner
7261    outline: pub fn inner_function
7262    outline: pub struct InnerStruct
7263      outline: value
7264outline: fn main"
7265                )
7266            );
7267        });
7268
7269        outline_panel.update_in(cx, |panel, window, cx| {
7270            panel.collapsed_entries.clear();
7271            panel.update_cached_entries(None, window, cx);
7272        });
7273        cx.executor()
7274            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7275        cx.run_until_parked();
7276
7277        outline_panel.update_in(cx, |panel, window, cx| {
7278            let outlines_with_children: Vec<_> = panel
7279                .cached_entries
7280                .iter()
7281                .filter_map(|entry| match &entry.entry {
7282                    PanelEntry::Outline(OutlineEntry::Outline(outline))
7283                        if panel
7284                            .outline_children_cache
7285                            .get(&outline.buffer_id)
7286                            .and_then(|children_map| {
7287                                let key = (outline.outline.range.clone(), outline.outline.depth);
7288                                children_map.get(&key)
7289                            })
7290                            .copied()
7291                            .unwrap_or(false) =>
7292                    {
7293                        Some(entry.entry.clone())
7294                    }
7295                    _ => None,
7296                })
7297                .collect();
7298
7299            for outline in outlines_with_children {
7300                panel.select_entry(outline, false, window, cx);
7301                panel.collapse_selected_entry(&CollapseSelectedEntry, window, cx);
7302            }
7303        });
7304        cx.executor()
7305            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7306        cx.run_until_parked();
7307
7308        outline_panel.update(cx, |outline_panel, cx| {
7309            assert_eq!(
7310                display_entries(
7311                    &project,
7312                    &snapshot(outline_panel, cx),
7313                    &outline_panel.cached_entries,
7314                    outline_panel.selected_entry(),
7315                    cx,
7316                ),
7317                indoc!(
7318                    "
7319outline: mod outer
7320outline: fn main"
7321                )
7322            );
7323        });
7324
7325        let collapsed_entries_count =
7326            outline_panel.read_with(cx, |panel, _| panel.collapsed_entries.len());
7327        assert!(
7328            collapsed_entries_count > 0,
7329            "Should have collapsed entries tracked"
7330        );
7331    }
7332
7333    #[gpui::test]
7334    async fn test_outline_click_toggle_behavior(cx: &mut TestAppContext) {
7335        init_test(cx);
7336
7337        let fs = FakeFs::new(cx.background_executor.clone());
7338        fs.insert_tree(
7339            "/test",
7340            json!({
7341                "src": {
7342                    "main.rs": indoc!("
7343                            struct Config {
7344                                name: String,
7345                                value: i32,
7346                            }
7347                            impl Config {
7348                                fn new(name: String) -> Self {
7349                                    Self { name, value: 0 }
7350                                }
7351                                fn get_value(&self) -> i32 {
7352                                    self.value
7353                                }
7354                            }
7355                            enum Status {
7356                                Active,
7357                                Inactive,
7358                            }
7359                            fn process_config(config: Config) -> Status {
7360                                if config.get_value() > 0 {
7361                                    Status::Active
7362                                } else {
7363                                    Status::Inactive
7364                                }
7365                            }
7366                            fn main() {
7367                                let config = Config::new(\"test\".to_string());
7368                                let status = process_config(config);
7369                            }
7370                        "),
7371                }
7372            }),
7373        )
7374        .await;
7375
7376        let project = Project::test(fs.clone(), ["/test".as_ref()], cx).await;
7377        project.read_with(cx, |project, _| project.languages().add(rust_lang()));
7378
7379        let workspace = add_outline_panel(&project, cx).await;
7380        let cx = &mut VisualTestContext::from_window(*workspace, cx);
7381        let outline_panel = outline_panel(&workspace, cx);
7382
7383        outline_panel.update_in(cx, |outline_panel, window, cx| {
7384            outline_panel.set_active(true, window, cx)
7385        });
7386
7387        let _editor = workspace
7388            .update(cx, |workspace, window, cx| {
7389                workspace.open_abs_path(
7390                    PathBuf::from("/test/src/main.rs"),
7391                    OpenOptions {
7392                        visible: Some(OpenVisible::All),
7393                        ..Default::default()
7394                    },
7395                    window,
7396                    cx,
7397                )
7398            })
7399            .unwrap()
7400            .await
7401            .unwrap();
7402
7403        cx.executor()
7404            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7405        cx.run_until_parked();
7406
7407        outline_panel.update(cx, |outline_panel, _cx| {
7408            outline_panel.selected_entry = SelectedEntry::None;
7409        });
7410
7411        // Check initial state - all entries should be expanded by default
7412        outline_panel.update(cx, |outline_panel, cx| {
7413            assert_eq!(
7414                display_entries(
7415                    &project,
7416                    &snapshot(outline_panel, cx),
7417                    &outline_panel.cached_entries,
7418                    outline_panel.selected_entry(),
7419                    cx,
7420                ),
7421                indoc!(
7422                    "
7423outline: struct Config
7424  outline: name
7425  outline: value
7426outline: impl Config
7427  outline: fn new
7428  outline: fn get_value
7429outline: enum Status
7430  outline: Active
7431  outline: Inactive
7432outline: fn process_config
7433outline: fn main"
7434                )
7435            );
7436        });
7437
7438        outline_panel.update(cx, |outline_panel, _cx| {
7439            outline_panel.selected_entry = SelectedEntry::None;
7440        });
7441
7442        cx.update(|window, cx| {
7443            outline_panel.update(cx, |outline_panel, cx| {
7444                outline_panel.select_first(&SelectFirst, window, cx);
7445            });
7446        });
7447
7448        cx.executor()
7449            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7450        cx.run_until_parked();
7451
7452        outline_panel.update(cx, |outline_panel, cx| {
7453            assert_eq!(
7454                display_entries(
7455                    &project,
7456                    &snapshot(outline_panel, cx),
7457                    &outline_panel.cached_entries,
7458                    outline_panel.selected_entry(),
7459                    cx,
7460                ),
7461                indoc!(
7462                    "
7463outline: struct Config  <==== selected
7464  outline: name
7465  outline: value
7466outline: impl Config
7467  outline: fn new
7468  outline: fn get_value
7469outline: enum Status
7470  outline: Active
7471  outline: Inactive
7472outline: fn process_config
7473outline: fn main"
7474                )
7475            );
7476        });
7477
7478        cx.update(|window, cx| {
7479            outline_panel.update(cx, |outline_panel, cx| {
7480                outline_panel.collapse_selected_entry(&CollapseSelectedEntry, window, cx);
7481            });
7482        });
7483
7484        cx.executor()
7485            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7486        cx.run_until_parked();
7487
7488        outline_panel.update(cx, |outline_panel, cx| {
7489            assert_eq!(
7490                display_entries(
7491                    &project,
7492                    &snapshot(outline_panel, cx),
7493                    &outline_panel.cached_entries,
7494                    outline_panel.selected_entry(),
7495                    cx,
7496                ),
7497                indoc!(
7498                    "
7499outline: struct Config  <==== selected
7500outline: impl Config
7501  outline: fn new
7502  outline: fn get_value
7503outline: enum Status
7504  outline: Active
7505  outline: Inactive
7506outline: fn process_config
7507outline: fn main"
7508                )
7509            );
7510        });
7511
7512        cx.update(|window, cx| {
7513            outline_panel.update(cx, |outline_panel, cx| {
7514                outline_panel.expand_selected_entry(&ExpandSelectedEntry, window, cx);
7515            });
7516        });
7517
7518        cx.executor()
7519            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7520        cx.run_until_parked();
7521
7522        outline_panel.update(cx, |outline_panel, cx| {
7523            assert_eq!(
7524                display_entries(
7525                    &project,
7526                    &snapshot(outline_panel, cx),
7527                    &outline_panel.cached_entries,
7528                    outline_panel.selected_entry(),
7529                    cx,
7530                ),
7531                indoc!(
7532                    "
7533outline: struct Config  <==== selected
7534  outline: name
7535  outline: value
7536outline: impl Config
7537  outline: fn new
7538  outline: fn get_value
7539outline: enum Status
7540  outline: Active
7541  outline: Inactive
7542outline: fn process_config
7543outline: fn main"
7544                )
7545            );
7546        });
7547    }
7548
7549    #[gpui::test]
7550    async fn test_outline_expand_collapse_all(cx: &mut TestAppContext) {
7551        init_test(cx);
7552
7553        let fs = FakeFs::new(cx.background_executor.clone());
7554        fs.insert_tree(
7555            "/test",
7556            json!({
7557                "src": {
7558                    "lib.rs": indoc!("
7559                            mod outer {
7560                                pub struct OuterStruct {
7561                                    field: String,
7562                                }
7563                                impl OuterStruct {
7564                                    pub fn new() -> Self {
7565                                        Self { field: String::new() }
7566                                    }
7567                                    pub fn method(&self) {
7568                                        println!(\"{}\", self.field);
7569                                    }
7570                                }
7571                                mod inner {
7572                                    pub fn inner_function() {
7573                                        let x = 42;
7574                                        println!(\"{}\", x);
7575                                    }
7576                                    pub struct InnerStruct {
7577                                        value: i32,
7578                                    }
7579                                }
7580                            }
7581                            fn main() {
7582                                let s = outer::OuterStruct::new();
7583                                s.method();
7584                            }
7585                        "),
7586                }
7587            }),
7588        )
7589        .await;
7590
7591        let project = Project::test(fs.clone(), ["/test".as_ref()], cx).await;
7592        project.read_with(cx, |project, _| project.languages().add(rust_lang()));
7593        let workspace = add_outline_panel(&project, cx).await;
7594        let cx = &mut VisualTestContext::from_window(*workspace, cx);
7595        let outline_panel = outline_panel(&workspace, cx);
7596
7597        outline_panel.update_in(cx, |outline_panel, window, cx| {
7598            outline_panel.set_active(true, window, cx)
7599        });
7600
7601        workspace
7602            .update(cx, |workspace, window, cx| {
7603                workspace.open_abs_path(
7604                    PathBuf::from("/test/src/lib.rs"),
7605                    OpenOptions {
7606                        visible: Some(OpenVisible::All),
7607                        ..Default::default()
7608                    },
7609                    window,
7610                    cx,
7611                )
7612            })
7613            .unwrap()
7614            .await
7615            .unwrap();
7616
7617        cx.executor()
7618            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(500));
7619        cx.run_until_parked();
7620
7621        // Force another update cycle to ensure outlines are fetched
7622        outline_panel.update_in(cx, |panel, window, cx| {
7623            panel.update_non_fs_items(window, cx);
7624            panel.update_cached_entries(Some(UPDATE_DEBOUNCE), window, cx);
7625        });
7626        cx.executor()
7627            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(500));
7628        cx.run_until_parked();
7629
7630        outline_panel.update(cx, |outline_panel, cx| {
7631            assert_eq!(
7632                display_entries(
7633                    &project,
7634                    &snapshot(outline_panel, cx),
7635                    &outline_panel.cached_entries,
7636                    outline_panel.selected_entry(),
7637                    cx,
7638                ),
7639                indoc!(
7640                    "
7641outline: mod outer  <==== selected
7642  outline: pub struct OuterStruct
7643    outline: field
7644  outline: impl OuterStruct
7645    outline: pub fn new
7646    outline: pub fn method
7647  outline: mod inner
7648    outline: pub fn inner_function
7649    outline: pub struct InnerStruct
7650      outline: value
7651outline: fn main"
7652                )
7653            );
7654        });
7655
7656        let _parent_outline = outline_panel
7657            .read_with(cx, |panel, _cx| {
7658                panel
7659                    .cached_entries
7660                    .iter()
7661                    .find_map(|entry| match &entry.entry {
7662                        PanelEntry::Outline(OutlineEntry::Outline(outline))
7663                            if panel
7664                                .outline_children_cache
7665                                .get(&outline.buffer_id)
7666                                .and_then(|children_map| {
7667                                    let key =
7668                                        (outline.outline.range.clone(), outline.outline.depth);
7669                                    children_map.get(&key)
7670                                })
7671                                .copied()
7672                                .unwrap_or(false) =>
7673                        {
7674                            Some(entry.entry.clone())
7675                        }
7676                        _ => None,
7677                    })
7678            })
7679            .expect("Should find an outline with children");
7680
7681        // Collapse all entries
7682        outline_panel.update_in(cx, |panel, window, cx| {
7683            panel.collapse_all_entries(&CollapseAllEntries, window, cx);
7684        });
7685        cx.executor()
7686            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7687        cx.run_until_parked();
7688
7689        let expected_collapsed_output = indoc!(
7690            "
7691        outline: mod outer  <==== selected
7692        outline: fn main"
7693        );
7694
7695        outline_panel.update(cx, |panel, cx| {
7696            assert_eq! {
7697                display_entries(
7698                    &project,
7699                    &snapshot(panel, cx),
7700                    &panel.cached_entries,
7701                    panel.selected_entry(),
7702                    cx,
7703                ),
7704                expected_collapsed_output
7705            };
7706        });
7707
7708        // Expand all entries
7709        outline_panel.update_in(cx, |panel, window, cx| {
7710            panel.expand_all_entries(&ExpandAllEntries, window, cx);
7711        });
7712        cx.executor()
7713            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7714        cx.run_until_parked();
7715
7716        let expected_expanded_output = indoc!(
7717            "
7718        outline: mod outer  <==== selected
7719          outline: pub struct OuterStruct
7720            outline: field
7721          outline: impl OuterStruct
7722            outline: pub fn new
7723            outline: pub fn method
7724          outline: mod inner
7725            outline: pub fn inner_function
7726            outline: pub struct InnerStruct
7727              outline: value
7728        outline: fn main"
7729        );
7730
7731        outline_panel.update(cx, |panel, cx| {
7732            assert_eq! {
7733                display_entries(
7734                    &project,
7735                    &snapshot(panel, cx),
7736                    &panel.cached_entries,
7737                    panel.selected_entry(),
7738                    cx,
7739                ),
7740                expected_expanded_output
7741            };
7742        });
7743    }
7744
7745    #[gpui::test]
7746    async fn test_buffer_search(cx: &mut TestAppContext) {
7747        init_test(cx);
7748
7749        let fs = FakeFs::new(cx.background_executor.clone());
7750        fs.insert_tree(
7751            "/test",
7752            json!({
7753                "foo.txt": r#"<_constitution>
7754
7755</_constitution>
7756
7757
7758
7759## 📊 Output
7760
7761| Field          | Meaning                |
7762"#
7763            }),
7764        )
7765        .await;
7766
7767        let project = Project::test(fs.clone(), ["/test".as_ref()], cx).await;
7768        let workspace = add_outline_panel(&project, cx).await;
7769        let cx = &mut VisualTestContext::from_window(*workspace, cx);
7770
7771        let editor = workspace
7772            .update(cx, |workspace, window, cx| {
7773                workspace.open_abs_path(
7774                    PathBuf::from("/test/foo.txt"),
7775                    OpenOptions {
7776                        visible: Some(OpenVisible::All),
7777                        ..OpenOptions::default()
7778                    },
7779                    window,
7780                    cx,
7781                )
7782            })
7783            .unwrap()
7784            .await
7785            .unwrap()
7786            .downcast::<Editor>()
7787            .unwrap();
7788
7789        let search_bar = workspace
7790            .update(cx, |_, window, cx| {
7791                cx.new(|cx| {
7792                    let mut search_bar = BufferSearchBar::new(None, window, cx);
7793                    search_bar.set_active_pane_item(Some(&editor), window, cx);
7794                    search_bar.show(window, cx);
7795                    search_bar
7796                })
7797            })
7798            .unwrap();
7799
7800        let outline_panel = outline_panel(&workspace, cx);
7801
7802        outline_panel.update_in(cx, |outline_panel, window, cx| {
7803            outline_panel.set_active(true, window, cx)
7804        });
7805
7806        search_bar
7807            .update_in(cx, |search_bar, window, cx| {
7808                search_bar.search("  ", None, true, window, cx)
7809            })
7810            .await
7811            .unwrap();
7812
7813        cx.executor()
7814            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(500));
7815        cx.run_until_parked();
7816
7817        outline_panel.update(cx, |outline_panel, cx| {
7818            assert_eq!(
7819                display_entries(
7820                    &project,
7821                    &snapshot(outline_panel, cx),
7822                    &outline_panel.cached_entries,
7823                    outline_panel.selected_entry(),
7824                    cx,
7825                ),
7826                "search: | Field«  »        | Meaning                |  <==== selected
7827search: | Field  «  »      | Meaning                |
7828search: | Field    «  »    | Meaning                |
7829search: | Field      «  »  | Meaning                |
7830search: | Field        «  »| Meaning                |
7831search: | Field          | Meaning«  »              |
7832search: | Field          | Meaning  «  »            |
7833search: | Field          | Meaning    «  »          |
7834search: | Field          | Meaning      «  »        |
7835search: | Field          | Meaning        «  »      |
7836search: | Field          | Meaning          «  »    |
7837search: | Field          | Meaning            «  »  |
7838search: | Field          | Meaning              «  »|"
7839            );
7840        });
7841    }
7842}