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    ActiveTheme, ButtonCommon, Clickable, Color, ContextMenu, DynamicSpacing, FluentBuilder,
  50    HighlightedLabel, Icon, IconButton, IconButtonShape, IconName, IconSize, IndentGuideColors,
  51    IndentGuideLayout, Label, LabelCommon, ListItem, ScrollAxes, Scrollbars, StyledExt,
  52    StyledTypography, Toggleable, Tooltip, WithScrollbar, h_flex, v_flex,
  53};
  54use util::{RangeExt, ResultExt, TryFutureExt, debug_panic, rel_path::RelPath};
  55use workspace::{
  56    OpenInTerminal, WeakItemHandle, Workspace,
  57    dock::{DockPosition, Panel, PanelEvent},
  58    item::ItemHandle,
  59    searchable::{SearchEvent, SearchableItem},
  60};
  61use worktree::{Entry, ProjectEntryId, WorktreeId};
  62
  63actions!(
  64    outline_panel,
  65    [
  66        /// Collapses all entries in the outline tree.
  67        CollapseAllEntries,
  68        /// Collapses the currently selected entry.
  69        CollapseSelectedEntry,
  70        /// Expands all entries in the outline tree.
  71        ExpandAllEntries,
  72        /// Expands the currently selected entry.
  73        ExpandSelectedEntry,
  74        /// Folds the selected directory.
  75        FoldDirectory,
  76        /// Opens the selected entry in the editor.
  77        OpenSelectedEntry,
  78        /// Reveals the selected item in the system file manager.
  79        RevealInFileManager,
  80        /// Selects the parent of the current entry.
  81        SelectParent,
  82        /// Toggles the pin status of the active editor.
  83        ToggleActiveEditorPin,
  84        /// Unfolds the selected directory.
  85        UnfoldDirectory,
  86        /// Toggles focus on the outline panel.
  87        ToggleFocus,
  88    ]
  89);
  90
  91const OUTLINE_PANEL_KEY: &str = "OutlinePanel";
  92const UPDATE_DEBOUNCE: Duration = Duration::from_millis(50);
  93
  94type Outline = OutlineItem<language::Anchor>;
  95type HighlightStyleData = Arc<OnceLock<Vec<(Range<usize>, HighlightStyle)>>>;
  96
  97pub struct OutlinePanel {
  98    fs: Arc<dyn Fs>,
  99    width: Option<Pixels>,
 100    project: Entity<Project>,
 101    workspace: WeakEntity<Workspace>,
 102    active: bool,
 103    pinned: bool,
 104    scroll_handle: UniformListScrollHandle,
 105    context_menu: Option<(Entity<ContextMenu>, Point<Pixels>, Subscription)>,
 106    focus_handle: FocusHandle,
 107    pending_serialization: Task<Option<()>>,
 108    fs_entries_depth: HashMap<(WorktreeId, ProjectEntryId), usize>,
 109    fs_entries: Vec<FsEntry>,
 110    fs_children_count: HashMap<WorktreeId, HashMap<Arc<RelPath>, FsChildren>>,
 111    collapsed_entries: HashSet<CollapsedEntry>,
 112    unfolded_dirs: HashMap<WorktreeId, BTreeSet<ProjectEntryId>>,
 113    selected_entry: SelectedEntry,
 114    active_item: Option<ActiveItem>,
 115    _subscriptions: Vec<Subscription>,
 116    updating_fs_entries: bool,
 117    updating_cached_entries: bool,
 118    new_entries_for_fs_update: HashSet<ExcerptId>,
 119    fs_entries_update_task: Task<()>,
 120    cached_entries_update_task: Task<()>,
 121    reveal_selection_task: Task<anyhow::Result<()>>,
 122    outline_fetch_tasks: HashMap<(BufferId, ExcerptId), Task<()>>,
 123    excerpts: HashMap<BufferId, HashMap<ExcerptId, Excerpt>>,
 124    cached_entries: Vec<CachedEntry>,
 125    filter_editor: Entity<Editor>,
 126    mode: ItemsDisplayMode,
 127    max_width_item_index: Option<usize>,
 128    preserve_selection_on_buffer_fold_toggles: HashSet<BufferId>,
 129    pending_default_expansion_depth: Option<usize>,
 130    outline_children_cache: HashMap<BufferId, HashMap<(Range<Anchor>, usize), bool>>,
 131}
 132
 133#[derive(Debug)]
 134enum ItemsDisplayMode {
 135    Search(SearchState),
 136    Outline,
 137}
 138
 139#[derive(Debug)]
 140struct SearchState {
 141    kind: SearchKind,
 142    query: String,
 143    matches: Vec<(Range<editor::Anchor>, Arc<OnceLock<SearchData>>)>,
 144    highlight_search_match_tx: channel::Sender<HighlightArguments>,
 145    _search_match_highlighter: Task<()>,
 146    _search_match_notify: Task<()>,
 147}
 148
 149struct HighlightArguments {
 150    multi_buffer_snapshot: MultiBufferSnapshot,
 151    match_range: Range<editor::Anchor>,
 152    search_data: Arc<OnceLock<SearchData>>,
 153}
 154
 155impl SearchState {
 156    fn new(
 157        kind: SearchKind,
 158        query: String,
 159        previous_matches: HashMap<Range<editor::Anchor>, Arc<OnceLock<SearchData>>>,
 160        new_matches: Vec<Range<editor::Anchor>>,
 161        theme: Arc<SyntaxTheme>,
 162        window: &mut Window,
 163        cx: &mut Context<OutlinePanel>,
 164    ) -> Self {
 165        let (highlight_search_match_tx, highlight_search_match_rx) = channel::unbounded();
 166        let (notify_tx, notify_rx) = channel::unbounded::<()>();
 167        Self {
 168            kind,
 169            query,
 170            matches: new_matches
 171                .into_iter()
 172                .map(|range| {
 173                    let search_data = previous_matches
 174                        .get(&range)
 175                        .map(Arc::clone)
 176                        .unwrap_or_default();
 177                    (range, search_data)
 178                })
 179                .collect(),
 180            highlight_search_match_tx,
 181            _search_match_highlighter: cx.background_spawn(async move {
 182                while let Ok(highlight_arguments) = highlight_search_match_rx.recv().await {
 183                    let needs_init = highlight_arguments.search_data.get().is_none();
 184                    let search_data = highlight_arguments.search_data.get_or_init(|| {
 185                        SearchData::new(
 186                            &highlight_arguments.match_range,
 187                            &highlight_arguments.multi_buffer_snapshot,
 188                        )
 189                    });
 190                    if needs_init {
 191                        notify_tx.try_send(()).ok();
 192                    }
 193
 194                    let highlight_data = &search_data.highlights_data;
 195                    if highlight_data.get().is_some() {
 196                        continue;
 197                    }
 198                    let mut left_whitespaces_count = 0;
 199                    let mut non_whitespace_symbol_occurred = false;
 200                    let context_offset_range = search_data
 201                        .context_range
 202                        .to_offset(&highlight_arguments.multi_buffer_snapshot);
 203                    let mut offset = context_offset_range.start;
 204                    let mut context_text = String::new();
 205                    let mut highlight_ranges = Vec::new();
 206                    for mut chunk in highlight_arguments
 207                        .multi_buffer_snapshot
 208                        .chunks(context_offset_range.start..context_offset_range.end, true)
 209                    {
 210                        if !non_whitespace_symbol_occurred {
 211                            for c in chunk.text.chars() {
 212                                if c.is_whitespace() {
 213                                    left_whitespaces_count += c.len_utf8();
 214                                } else {
 215                                    non_whitespace_symbol_occurred = true;
 216                                    break;
 217                                }
 218                            }
 219                        }
 220
 221                        if chunk.text.len() > context_offset_range.end - offset {
 222                            chunk.text = &chunk.text[0..(context_offset_range.end - offset)];
 223                            offset = context_offset_range.end;
 224                        } else {
 225                            offset += chunk.text.len();
 226                        }
 227                        let style = chunk
 228                            .syntax_highlight_id
 229                            .and_then(|highlight| highlight.style(&theme));
 230                        if let Some(style) = style {
 231                            let start = context_text.len();
 232                            let end = start + chunk.text.len();
 233                            highlight_ranges.push((start..end, style));
 234                        }
 235                        context_text.push_str(chunk.text);
 236                        if offset >= context_offset_range.end {
 237                            break;
 238                        }
 239                    }
 240
 241                    highlight_ranges.iter_mut().for_each(|(range, _)| {
 242                        range.start = range.start.saturating_sub(left_whitespaces_count);
 243                        range.end = range.end.saturating_sub(left_whitespaces_count);
 244                    });
 245                    if highlight_data.set(highlight_ranges).ok().is_some() {
 246                        notify_tx.try_send(()).ok();
 247                    }
 248
 249                    let trimmed_text = context_text[left_whitespaces_count..].to_owned();
 250                    debug_assert_eq!(
 251                        trimmed_text, search_data.context_text,
 252                        "Highlighted text that does not match the buffer text"
 253                    );
 254                }
 255            }),
 256            _search_match_notify: cx.spawn_in(window, async move |outline_panel, cx| {
 257                loop {
 258                    match notify_rx.recv().await {
 259                        Ok(()) => {}
 260                        Err(_) => break,
 261                    };
 262                    while let Ok(()) = notify_rx.try_recv() {
 263                        //
 264                    }
 265                    let update_result = outline_panel.update(cx, |_, cx| {
 266                        cx.notify();
 267                    });
 268                    if update_result.is_err() {
 269                        break;
 270                    }
 271                }
 272            }),
 273        }
 274    }
 275}
 276
 277#[derive(Debug)]
 278enum SelectedEntry {
 279    Invalidated(Option<PanelEntry>),
 280    Valid(PanelEntry, usize),
 281    None,
 282}
 283
 284impl SelectedEntry {
 285    fn invalidate(&mut self) {
 286        match std::mem::replace(self, SelectedEntry::None) {
 287            Self::Valid(entry, _) => *self = Self::Invalidated(Some(entry)),
 288            Self::None => *self = Self::Invalidated(None),
 289            other => *self = other,
 290        }
 291    }
 292
 293    const fn is_invalidated(&self) -> bool {
 294        matches!(self, Self::Invalidated(_))
 295    }
 296}
 297
 298#[derive(Debug, Clone, Copy, Default)]
 299struct FsChildren {
 300    files: usize,
 301    dirs: usize,
 302}
 303
 304impl FsChildren {
 305    const fn may_be_fold_part(&self) -> bool {
 306        self.dirs == 0 || (self.dirs == 1 && self.files == 0)
 307    }
 308}
 309
 310#[derive(Clone, Debug)]
 311struct CachedEntry {
 312    depth: usize,
 313    string_match: Option<StringMatch>,
 314    entry: PanelEntry,
 315}
 316
 317#[derive(Clone, Debug, PartialEq, Eq, Hash)]
 318enum CollapsedEntry {
 319    Dir(WorktreeId, ProjectEntryId),
 320    File(WorktreeId, BufferId),
 321    ExternalFile(BufferId),
 322    Excerpt(BufferId, ExcerptId),
 323    Outline(BufferId, ExcerptId, Range<Anchor>),
 324}
 325
 326#[derive(Debug)]
 327struct Excerpt {
 328    range: ExcerptRange<language::Anchor>,
 329    outlines: ExcerptOutlines,
 330}
 331
 332impl Excerpt {
 333    fn invalidate_outlines(&mut self) {
 334        if let ExcerptOutlines::Outlines(valid_outlines) = &mut self.outlines {
 335            self.outlines = ExcerptOutlines::Invalidated(std::mem::take(valid_outlines));
 336        }
 337    }
 338
 339    fn iter_outlines(&self) -> impl Iterator<Item = &Outline> {
 340        match &self.outlines {
 341            ExcerptOutlines::Outlines(outlines) => outlines.iter(),
 342            ExcerptOutlines::Invalidated(outlines) => outlines.iter(),
 343            ExcerptOutlines::NotFetched => [].iter(),
 344        }
 345    }
 346
 347    const fn should_fetch_outlines(&self) -> bool {
 348        match &self.outlines {
 349            ExcerptOutlines::Outlines(_) => false,
 350            ExcerptOutlines::Invalidated(_) => true,
 351            ExcerptOutlines::NotFetched => true,
 352        }
 353    }
 354}
 355
 356#[derive(Debug)]
 357enum ExcerptOutlines {
 358    Outlines(Vec<Outline>),
 359    Invalidated(Vec<Outline>),
 360    NotFetched,
 361}
 362
 363#[derive(Clone, Debug, PartialEq, Eq)]
 364struct FoldedDirsEntry {
 365    worktree_id: WorktreeId,
 366    entries: Vec<GitEntry>,
 367}
 368
 369// TODO: collapse the inner enums into panel entry
 370#[derive(Clone, Debug)]
 371enum PanelEntry {
 372    Fs(FsEntry),
 373    FoldedDirs(FoldedDirsEntry),
 374    Outline(OutlineEntry),
 375    Search(SearchEntry),
 376}
 377
 378#[derive(Clone, Debug)]
 379struct SearchEntry {
 380    match_range: Range<editor::Anchor>,
 381    kind: SearchKind,
 382    render_data: Arc<OnceLock<SearchData>>,
 383}
 384
 385#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
 386enum SearchKind {
 387    Project,
 388    Buffer,
 389}
 390
 391#[derive(Clone, Debug)]
 392struct SearchData {
 393    context_range: Range<editor::Anchor>,
 394    context_text: String,
 395    truncated_left: bool,
 396    truncated_right: bool,
 397    search_match_indices: Vec<Range<usize>>,
 398    highlights_data: HighlightStyleData,
 399}
 400
 401impl PartialEq for PanelEntry {
 402    fn eq(&self, other: &Self) -> bool {
 403        match (self, other) {
 404            (Self::Fs(a), Self::Fs(b)) => a == b,
 405            (
 406                Self::FoldedDirs(FoldedDirsEntry {
 407                    worktree_id: worktree_id_a,
 408                    entries: entries_a,
 409                }),
 410                Self::FoldedDirs(FoldedDirsEntry {
 411                    worktree_id: worktree_id_b,
 412                    entries: entries_b,
 413                }),
 414            ) => worktree_id_a == worktree_id_b && entries_a == entries_b,
 415            (Self::Outline(a), Self::Outline(b)) => a == b,
 416            (
 417                Self::Search(SearchEntry {
 418                    match_range: match_range_a,
 419                    kind: kind_a,
 420                    ..
 421                }),
 422                Self::Search(SearchEntry {
 423                    match_range: match_range_b,
 424                    kind: kind_b,
 425                    ..
 426                }),
 427            ) => match_range_a == match_range_b && kind_a == kind_b,
 428            _ => false,
 429        }
 430    }
 431}
 432
 433impl Eq for PanelEntry {}
 434
 435const SEARCH_MATCH_CONTEXT_SIZE: u32 = 40;
 436const TRUNCATED_CONTEXT_MARK: &str = "";
 437
 438impl SearchData {
 439    fn new(
 440        match_range: &Range<editor::Anchor>,
 441        multi_buffer_snapshot: &MultiBufferSnapshot,
 442    ) -> Self {
 443        let match_point_range = match_range.to_point(multi_buffer_snapshot);
 444        let context_left_border = multi_buffer_snapshot.clip_point(
 445            language::Point::new(
 446                match_point_range.start.row,
 447                match_point_range
 448                    .start
 449                    .column
 450                    .saturating_sub(SEARCH_MATCH_CONTEXT_SIZE),
 451            ),
 452            Bias::Left,
 453        );
 454        let context_right_border = multi_buffer_snapshot.clip_point(
 455            language::Point::new(
 456                match_point_range.end.row,
 457                match_point_range.end.column + SEARCH_MATCH_CONTEXT_SIZE,
 458            ),
 459            Bias::Right,
 460        );
 461
 462        let context_anchor_range =
 463            (context_left_border..context_right_border).to_anchors(multi_buffer_snapshot);
 464        let context_offset_range = context_anchor_range.to_offset(multi_buffer_snapshot);
 465        let match_offset_range = match_range.to_offset(multi_buffer_snapshot);
 466
 467        let mut search_match_indices = vec![
 468            multi_buffer_snapshot.clip_offset(
 469                match_offset_range.start - context_offset_range.start,
 470                Bias::Left,
 471            )
 472                ..multi_buffer_snapshot.clip_offset(
 473                    match_offset_range.end - context_offset_range.start,
 474                    Bias::Right,
 475                ),
 476        ];
 477
 478        let entire_context_text = multi_buffer_snapshot
 479            .text_for_range(context_offset_range.clone())
 480            .collect::<String>();
 481        let left_whitespaces_offset = entire_context_text
 482            .chars()
 483            .take_while(|c| c.is_whitespace())
 484            .map(|c| c.len_utf8())
 485            .sum::<usize>();
 486
 487        let mut extended_context_left_border = context_left_border;
 488        extended_context_left_border.column = extended_context_left_border.column.saturating_sub(1);
 489        let extended_context_left_border =
 490            multi_buffer_snapshot.clip_point(extended_context_left_border, Bias::Left);
 491        let mut extended_context_right_border = context_right_border;
 492        extended_context_right_border.column += 1;
 493        let extended_context_right_border =
 494            multi_buffer_snapshot.clip_point(extended_context_right_border, Bias::Right);
 495
 496        let truncated_left = left_whitespaces_offset == 0
 497            && extended_context_left_border < context_left_border
 498            && multi_buffer_snapshot
 499                .chars_at(extended_context_left_border)
 500                .last()
 501                .is_some_and(|c| !c.is_whitespace());
 502        let truncated_right = entire_context_text
 503            .chars()
 504            .last()
 505            .is_none_or(|c| !c.is_whitespace())
 506            && extended_context_right_border > context_right_border
 507            && multi_buffer_snapshot
 508                .chars_at(extended_context_right_border)
 509                .next()
 510                .is_some_and(|c| !c.is_whitespace());
 511        search_match_indices.iter_mut().for_each(|range| {
 512            range.start = multi_buffer_snapshot.clip_offset(
 513                range.start.saturating_sub(left_whitespaces_offset),
 514                Bias::Left,
 515            );
 516            range.end = multi_buffer_snapshot.clip_offset(
 517                range.end.saturating_sub(left_whitespaces_offset),
 518                Bias::Right,
 519            );
 520        });
 521
 522        let trimmed_row_offset_range =
 523            context_offset_range.start + left_whitespaces_offset..context_offset_range.end;
 524        let trimmed_text = entire_context_text[left_whitespaces_offset..].to_owned();
 525        Self {
 526            highlights_data: Arc::default(),
 527            search_match_indices,
 528            context_range: trimmed_row_offset_range.to_anchors(multi_buffer_snapshot),
 529            context_text: trimmed_text,
 530            truncated_left,
 531            truncated_right,
 532        }
 533    }
 534}
 535
 536#[derive(Clone, Debug, PartialEq, Eq, Hash)]
 537struct OutlineEntryExcerpt {
 538    id: ExcerptId,
 539    buffer_id: BufferId,
 540    range: ExcerptRange<language::Anchor>,
 541}
 542
 543#[derive(Clone, Debug, Eq)]
 544struct OutlineEntryOutline {
 545    buffer_id: BufferId,
 546    excerpt_id: ExcerptId,
 547    outline: Outline,
 548}
 549
 550impl PartialEq for OutlineEntryOutline {
 551    fn eq(&self, other: &Self) -> bool {
 552        self.buffer_id == other.buffer_id
 553            && self.excerpt_id == other.excerpt_id
 554            && self.outline.depth == other.outline.depth
 555            && self.outline.range == other.outline.range
 556            && self.outline.text == other.outline.text
 557    }
 558}
 559
 560impl Hash for OutlineEntryOutline {
 561    fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
 562        (
 563            self.buffer_id,
 564            self.excerpt_id,
 565            self.outline.depth,
 566            &self.outline.range,
 567            &self.outline.text,
 568        )
 569            .hash(state);
 570    }
 571}
 572
 573#[derive(Clone, Debug, PartialEq, Eq)]
 574enum OutlineEntry {
 575    Excerpt(OutlineEntryExcerpt),
 576    Outline(OutlineEntryOutline),
 577}
 578
 579impl OutlineEntry {
 580    const fn ids(&self) -> (BufferId, ExcerptId) {
 581        match self {
 582            OutlineEntry::Excerpt(excerpt) => (excerpt.buffer_id, excerpt.id),
 583            OutlineEntry::Outline(outline) => (outline.buffer_id, outline.excerpt_id),
 584        }
 585    }
 586}
 587
 588#[derive(Debug, Clone, Eq)]
 589struct FsEntryFile {
 590    worktree_id: WorktreeId,
 591    entry: GitEntry,
 592    buffer_id: BufferId,
 593    excerpts: Vec<ExcerptId>,
 594}
 595
 596impl PartialEq for FsEntryFile {
 597    fn eq(&self, other: &Self) -> bool {
 598        self.worktree_id == other.worktree_id
 599            && self.entry.id == other.entry.id
 600            && self.buffer_id == other.buffer_id
 601    }
 602}
 603
 604impl Hash for FsEntryFile {
 605    fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
 606        (self.buffer_id, self.entry.id, self.worktree_id).hash(state);
 607    }
 608}
 609
 610#[derive(Debug, Clone, Eq)]
 611struct FsEntryDirectory {
 612    worktree_id: WorktreeId,
 613    entry: GitEntry,
 614}
 615
 616impl PartialEq for FsEntryDirectory {
 617    fn eq(&self, other: &Self) -> bool {
 618        self.worktree_id == other.worktree_id && self.entry.id == other.entry.id
 619    }
 620}
 621
 622impl Hash for FsEntryDirectory {
 623    fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
 624        (self.worktree_id, self.entry.id).hash(state);
 625    }
 626}
 627
 628#[derive(Debug, Clone, Eq)]
 629struct FsEntryExternalFile {
 630    buffer_id: BufferId,
 631    excerpts: Vec<ExcerptId>,
 632}
 633
 634impl PartialEq for FsEntryExternalFile {
 635    fn eq(&self, other: &Self) -> bool {
 636        self.buffer_id == other.buffer_id
 637    }
 638}
 639
 640impl Hash for FsEntryExternalFile {
 641    fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
 642        self.buffer_id.hash(state);
 643    }
 644}
 645
 646#[derive(Clone, Debug, Eq, PartialEq)]
 647enum FsEntry {
 648    ExternalFile(FsEntryExternalFile),
 649    Directory(FsEntryDirectory),
 650    File(FsEntryFile),
 651}
 652
 653struct ActiveItem {
 654    item_handle: Box<dyn WeakItemHandle>,
 655    active_editor: WeakEntity<Editor>,
 656    _buffer_search_subscription: Subscription,
 657    _editor_subscription: Subscription,
 658}
 659
 660#[derive(Debug)]
 661pub enum Event {
 662    Focus,
 663}
 664
 665#[derive(Serialize, Deserialize)]
 666struct SerializedOutlinePanel {
 667    width: Option<Pixels>,
 668    active: Option<bool>,
 669}
 670
 671pub fn init_settings(cx: &mut App) {
 672    OutlinePanelSettings::register(cx);
 673}
 674
 675pub fn init(cx: &mut App) {
 676    init_settings(cx);
 677
 678    cx.observe_new(|workspace: &mut Workspace, _, _| {
 679        workspace.register_action(|workspace, _: &ToggleFocus, window, cx| {
 680            workspace.toggle_panel_focus::<OutlinePanel>(window, cx);
 681        });
 682    })
 683    .detach();
 684}
 685
 686impl OutlinePanel {
 687    pub async fn load(
 688        workspace: WeakEntity<Workspace>,
 689        mut cx: AsyncWindowContext,
 690    ) -> anyhow::Result<Entity<Self>> {
 691        let serialized_panel = match workspace
 692            .read_with(&cx, |workspace, _| {
 693                OutlinePanel::serialization_key(workspace)
 694            })
 695            .ok()
 696            .flatten()
 697        {
 698            Some(serialization_key) => cx
 699                .background_spawn(async move { KEY_VALUE_STORE.read_kvp(&serialization_key) })
 700                .await
 701                .context("loading outline panel")
 702                .log_err()
 703                .flatten()
 704                .map(|panel| serde_json::from_str::<SerializedOutlinePanel>(&panel))
 705                .transpose()
 706                .log_err()
 707                .flatten(),
 708            None => None,
 709        };
 710
 711        workspace.update_in(&mut cx, |workspace, window, cx| {
 712            let panel = Self::new(workspace, window, cx);
 713            if let Some(serialized_panel) = serialized_panel {
 714                panel.update(cx, |panel, cx| {
 715                    panel.width = serialized_panel.width.map(|px| px.round());
 716                    panel.active = serialized_panel.active.unwrap_or(false);
 717                    cx.notify();
 718                });
 719            }
 720            panel
 721        })
 722    }
 723
 724    fn new(
 725        workspace: &mut Workspace,
 726        window: &mut Window,
 727        cx: &mut Context<Workspace>,
 728    ) -> Entity<Self> {
 729        let project = workspace.project().clone();
 730        let workspace_handle = cx.entity().downgrade();
 731
 732        cx.new(|cx| {
 733            let filter_editor = cx.new(|cx| {
 734                let mut editor = Editor::single_line(window, cx);
 735                editor.set_placeholder_text("Filter...", window, cx);
 736                editor
 737            });
 738            let filter_update_subscription = cx.subscribe_in(
 739                &filter_editor,
 740                window,
 741                |outline_panel: &mut Self, _, event, window, cx| {
 742                    if let editor::EditorEvent::BufferEdited = event {
 743                        outline_panel.update_cached_entries(Some(UPDATE_DEBOUNCE), window, cx);
 744                    }
 745                },
 746            );
 747
 748            let focus_handle = cx.focus_handle();
 749            let focus_subscription = cx.on_focus(&focus_handle, window, Self::focus_in);
 750            let workspace_subscription = cx.subscribe_in(
 751                &workspace
 752                    .weak_handle()
 753                    .upgrade()
 754                    .expect("have a &mut Workspace"),
 755                window,
 756                move |outline_panel, workspace, event, window, cx| {
 757                    if let workspace::Event::ActiveItemChanged = event {
 758                        if let Some((new_active_item, new_active_editor)) =
 759                            workspace_active_editor(workspace.read(cx), cx)
 760                        {
 761                            if outline_panel.should_replace_active_item(new_active_item.as_ref()) {
 762                                outline_panel.replace_active_editor(
 763                                    new_active_item,
 764                                    new_active_editor,
 765                                    window,
 766                                    cx,
 767                                );
 768                            }
 769                        } else {
 770                            outline_panel.clear_previous(window, cx);
 771                            cx.notify();
 772                        }
 773                    }
 774                },
 775            );
 776
 777            let icons_subscription = cx.observe_global::<FileIcons>(|_, cx| {
 778                cx.notify();
 779            });
 780
 781            let mut outline_panel_settings = *OutlinePanelSettings::get_global(cx);
 782            let mut current_theme = ThemeSettings::get_global(cx).clone();
 783            let settings_subscription =
 784                cx.observe_global_in::<SettingsStore>(window, move |outline_panel, window, cx| {
 785                    let new_settings = OutlinePanelSettings::get_global(cx);
 786                    let new_theme = ThemeSettings::get_global(cx);
 787                    if &current_theme != new_theme {
 788                        outline_panel_settings = *new_settings;
 789                        current_theme = new_theme.clone();
 790                        for excerpts in outline_panel.excerpts.values_mut() {
 791                            for excerpt in excerpts.values_mut() {
 792                                excerpt.invalidate_outlines();
 793                            }
 794                        }
 795                        let update_cached_items = outline_panel.update_non_fs_items(window, cx);
 796                        if update_cached_items {
 797                            outline_panel.update_cached_entries(Some(UPDATE_DEBOUNCE), window, cx);
 798                        }
 799                    } else if &outline_panel_settings != new_settings {
 800                        let old_expansion_depth = outline_panel_settings.expand_outlines_with_depth;
 801                        outline_panel_settings = *new_settings;
 802
 803                        if old_expansion_depth != new_settings.expand_outlines_with_depth {
 804                            let old_collapsed_entries = outline_panel.collapsed_entries.clone();
 805                            outline_panel
 806                                .collapsed_entries
 807                                .retain(|entry| !matches!(entry, CollapsedEntry::Outline(..)));
 808
 809                            let new_depth = new_settings.expand_outlines_with_depth;
 810
 811                            for (buffer_id, excerpts) in &outline_panel.excerpts {
 812                                for (excerpt_id, excerpt) in excerpts {
 813                                    if let ExcerptOutlines::Outlines(outlines) = &excerpt.outlines {
 814                                        for outline in outlines {
 815                                            if outline_panel
 816                                                .outline_children_cache
 817                                                .get(buffer_id)
 818                                                .and_then(|children_map| {
 819                                                    let key =
 820                                                        (outline.range.clone(), outline.depth);
 821                                                    children_map.get(&key)
 822                                                })
 823                                                .copied()
 824                                                .unwrap_or(false)
 825                                                && (new_depth == 0 || outline.depth >= new_depth)
 826                                            {
 827                                                outline_panel.collapsed_entries.insert(
 828                                                    CollapsedEntry::Outline(
 829                                                        *buffer_id,
 830                                                        *excerpt_id,
 831                                                        outline.range.clone(),
 832                                                    ),
 833                                                );
 834                                            }
 835                                        }
 836                                    }
 837                                }
 838                            }
 839
 840                            if old_collapsed_entries != outline_panel.collapsed_entries {
 841                                outline_panel.update_cached_entries(
 842                                    Some(UPDATE_DEBOUNCE),
 843                                    window,
 844                                    cx,
 845                                );
 846                            }
 847                        } else {
 848                            cx.notify();
 849                        }
 850                    }
 851                });
 852
 853            let scroll_handle = UniformListScrollHandle::new();
 854
 855            let mut outline_panel = Self {
 856                mode: ItemsDisplayMode::Outline,
 857                active: false,
 858                pinned: false,
 859                workspace: workspace_handle,
 860                project,
 861                fs: workspace.app_state().fs.clone(),
 862                max_width_item_index: None,
 863                scroll_handle,
 864                focus_handle,
 865                filter_editor,
 866                fs_entries: Vec::new(),
 867                fs_entries_depth: HashMap::default(),
 868                fs_children_count: HashMap::default(),
 869                collapsed_entries: HashSet::default(),
 870                unfolded_dirs: HashMap::default(),
 871                selected_entry: SelectedEntry::None,
 872                context_menu: None,
 873                width: None,
 874                active_item: None,
 875                pending_serialization: Task::ready(None),
 876                updating_fs_entries: false,
 877                updating_cached_entries: false,
 878                new_entries_for_fs_update: HashSet::default(),
 879                preserve_selection_on_buffer_fold_toggles: HashSet::default(),
 880                pending_default_expansion_depth: None,
 881                fs_entries_update_task: Task::ready(()),
 882                cached_entries_update_task: Task::ready(()),
 883                reveal_selection_task: Task::ready(Ok(())),
 884                outline_fetch_tasks: HashMap::default(),
 885                excerpts: HashMap::default(),
 886                cached_entries: Vec::new(),
 887                _subscriptions: vec![
 888                    settings_subscription,
 889                    icons_subscription,
 890                    focus_subscription,
 891                    workspace_subscription,
 892                    filter_update_subscription,
 893                ],
 894                outline_children_cache: HashMap::default(),
 895            };
 896            if let Some((item, editor)) = workspace_active_editor(workspace, cx) {
 897                outline_panel.replace_active_editor(item, editor, window, cx);
 898            }
 899            outline_panel
 900        })
 901    }
 902
 903    fn serialization_key(workspace: &Workspace) -> Option<String> {
 904        workspace
 905            .database_id()
 906            .map(|id| i64::from(id).to_string())
 907            .or(workspace.session_id())
 908            .map(|id| format!("{}-{:?}", OUTLINE_PANEL_KEY, id))
 909    }
 910
 911    fn serialize(&mut self, cx: &mut Context<Self>) {
 912        let Some(serialization_key) = self
 913            .workspace
 914            .read_with(cx, |workspace, _| {
 915                OutlinePanel::serialization_key(workspace)
 916            })
 917            .ok()
 918            .flatten()
 919        else {
 920            return;
 921        };
 922        let width = self.width;
 923        let active = Some(self.active);
 924        self.pending_serialization = cx.background_spawn(
 925            async move {
 926                KEY_VALUE_STORE
 927                    .write_kvp(
 928                        serialization_key,
 929                        serde_json::to_string(&SerializedOutlinePanel { width, active })?,
 930                    )
 931                    .await?;
 932                anyhow::Ok(())
 933            }
 934            .log_err(),
 935        );
 936    }
 937
 938    fn dispatch_context(&self, window: &mut Window, cx: &mut Context<Self>) -> KeyContext {
 939        let mut dispatch_context = KeyContext::new_with_defaults();
 940        dispatch_context.add("OutlinePanel");
 941        dispatch_context.add("menu");
 942        let identifier = if self.filter_editor.focus_handle(cx).is_focused(window) {
 943            "editing"
 944        } else {
 945            "not_editing"
 946        };
 947        dispatch_context.add(identifier);
 948        dispatch_context
 949    }
 950
 951    fn unfold_directory(
 952        &mut self,
 953        _: &UnfoldDirectory,
 954        window: &mut Window,
 955        cx: &mut Context<Self>,
 956    ) {
 957        if let Some(PanelEntry::FoldedDirs(FoldedDirsEntry {
 958            worktree_id,
 959            entries,
 960            ..
 961        })) = self.selected_entry().cloned()
 962        {
 963            self.unfolded_dirs
 964                .entry(worktree_id)
 965                .or_default()
 966                .extend(entries.iter().map(|entry| entry.id));
 967            self.update_cached_entries(None, window, cx);
 968        }
 969    }
 970
 971    fn fold_directory(&mut self, _: &FoldDirectory, window: &mut Window, cx: &mut Context<Self>) {
 972        let (worktree_id, entry) = match self.selected_entry().cloned() {
 973            Some(PanelEntry::Fs(FsEntry::Directory(directory))) => {
 974                (directory.worktree_id, Some(directory.entry))
 975            }
 976            Some(PanelEntry::FoldedDirs(folded_dirs)) => {
 977                (folded_dirs.worktree_id, folded_dirs.entries.last().cloned())
 978            }
 979            _ => return,
 980        };
 981        let Some(entry) = entry else {
 982            return;
 983        };
 984        let unfolded_dirs = self.unfolded_dirs.get_mut(&worktree_id);
 985        let worktree = self
 986            .project
 987            .read(cx)
 988            .worktree_for_id(worktree_id, cx)
 989            .map(|w| w.read(cx).snapshot());
 990        let Some((_, unfolded_dirs)) = worktree.zip(unfolded_dirs) else {
 991            return;
 992        };
 993
 994        unfolded_dirs.remove(&entry.id);
 995        self.update_cached_entries(None, window, cx);
 996    }
 997
 998    fn open_selected_entry(
 999        &mut self,
1000        _: &OpenSelectedEntry,
1001        window: &mut Window,
1002        cx: &mut Context<Self>,
1003    ) {
1004        if self.filter_editor.focus_handle(cx).is_focused(window) {
1005            cx.propagate()
1006        } else if let Some(selected_entry) = self.selected_entry().cloned() {
1007            self.toggle_expanded(&selected_entry, window, cx);
1008            self.scroll_editor_to_entry(&selected_entry, true, true, window, cx);
1009        }
1010    }
1011
1012    fn cancel(&mut self, _: &Cancel, window: &mut Window, cx: &mut Context<Self>) {
1013        if self.filter_editor.focus_handle(cx).is_focused(window) {
1014            self.focus_handle.focus(window);
1015        } else {
1016            self.filter_editor.focus_handle(cx).focus(window);
1017        }
1018
1019        if self.context_menu.is_some() {
1020            self.context_menu.take();
1021            cx.notify();
1022        }
1023    }
1024
1025    fn open_excerpts(
1026        &mut self,
1027        action: &editor::actions::OpenExcerpts,
1028        window: &mut Window,
1029        cx: &mut Context<Self>,
1030    ) {
1031        if self.filter_editor.focus_handle(cx).is_focused(window) {
1032            cx.propagate()
1033        } else if let Some((active_editor, selected_entry)) =
1034            self.active_editor().zip(self.selected_entry().cloned())
1035        {
1036            self.scroll_editor_to_entry(&selected_entry, true, true, window, cx);
1037            active_editor.update(cx, |editor, cx| editor.open_excerpts(action, window, cx));
1038        }
1039    }
1040
1041    fn open_excerpts_split(
1042        &mut self,
1043        action: &editor::actions::OpenExcerptsSplit,
1044        window: &mut Window,
1045        cx: &mut Context<Self>,
1046    ) {
1047        if self.filter_editor.focus_handle(cx).is_focused(window) {
1048            cx.propagate()
1049        } else if let Some((active_editor, selected_entry)) =
1050            self.active_editor().zip(self.selected_entry().cloned())
1051        {
1052            self.scroll_editor_to_entry(&selected_entry, true, true, window, cx);
1053            active_editor.update(cx, |editor, cx| {
1054                editor.open_excerpts_in_split(action, window, cx)
1055            });
1056        }
1057    }
1058
1059    fn scroll_editor_to_entry(
1060        &mut self,
1061        entry: &PanelEntry,
1062        prefer_selection_change: bool,
1063        prefer_focus_change: bool,
1064        window: &mut Window,
1065        cx: &mut Context<OutlinePanel>,
1066    ) {
1067        let Some(active_editor) = self.active_editor() else {
1068            return;
1069        };
1070        let active_multi_buffer = active_editor.read(cx).buffer().clone();
1071        let multi_buffer_snapshot = active_multi_buffer.read(cx).snapshot(cx);
1072        let mut change_selection = prefer_selection_change;
1073        let mut change_focus = prefer_focus_change;
1074        let mut scroll_to_buffer = None;
1075        let scroll_target = match entry {
1076            PanelEntry::FoldedDirs(..) | PanelEntry::Fs(FsEntry::Directory(..)) => {
1077                change_focus = false;
1078                None
1079            }
1080            PanelEntry::Fs(FsEntry::ExternalFile(file)) => {
1081                change_selection = false;
1082                scroll_to_buffer = Some(file.buffer_id);
1083                multi_buffer_snapshot.excerpts().find_map(
1084                    |(excerpt_id, buffer_snapshot, excerpt_range)| {
1085                        if buffer_snapshot.remote_id() == file.buffer_id {
1086                            multi_buffer_snapshot
1087                                .anchor_in_excerpt(excerpt_id, excerpt_range.context.start)
1088                        } else {
1089                            None
1090                        }
1091                    },
1092                )
1093            }
1094
1095            PanelEntry::Fs(FsEntry::File(file)) => {
1096                change_selection = false;
1097                scroll_to_buffer = Some(file.buffer_id);
1098                self.project
1099                    .update(cx, |project, cx| {
1100                        project
1101                            .path_for_entry(file.entry.id, cx)
1102                            .and_then(|path| project.get_open_buffer(&path, cx))
1103                    })
1104                    .map(|buffer| {
1105                        active_multi_buffer
1106                            .read(cx)
1107                            .excerpts_for_buffer(buffer.read(cx).remote_id(), cx)
1108                    })
1109                    .and_then(|excerpts| {
1110                        let (excerpt_id, excerpt_range) = excerpts.first()?;
1111                        multi_buffer_snapshot
1112                            .anchor_in_excerpt(*excerpt_id, excerpt_range.context.start)
1113                    })
1114            }
1115            PanelEntry::Outline(OutlineEntry::Outline(outline)) => multi_buffer_snapshot
1116                .anchor_in_excerpt(outline.excerpt_id, outline.outline.range.start)
1117                .or_else(|| {
1118                    multi_buffer_snapshot
1119                        .anchor_in_excerpt(outline.excerpt_id, outline.outline.range.end)
1120                }),
1121            PanelEntry::Outline(OutlineEntry::Excerpt(excerpt)) => {
1122                change_selection = false;
1123                change_focus = false;
1124                multi_buffer_snapshot.anchor_in_excerpt(excerpt.id, excerpt.range.context.start)
1125            }
1126            PanelEntry::Search(search_entry) => Some(search_entry.match_range.start),
1127        };
1128
1129        if let Some(anchor) = scroll_target {
1130            let activate = self
1131                .workspace
1132                .update(cx, |workspace, cx| match self.active_item() {
1133                    Some(active_item) => workspace.activate_item(
1134                        active_item.as_ref(),
1135                        true,
1136                        change_focus,
1137                        window,
1138                        cx,
1139                    ),
1140                    None => workspace.activate_item(&active_editor, true, change_focus, window, cx),
1141                });
1142
1143            if activate.is_ok() {
1144                self.select_entry(entry.clone(), true, window, cx);
1145                if change_selection {
1146                    active_editor.update(cx, |editor, cx| {
1147                        editor.change_selections(
1148                            SelectionEffects::scroll(Autoscroll::center()),
1149                            window,
1150                            cx,
1151                            |s| s.select_ranges(Some(anchor..anchor)),
1152                        );
1153                    });
1154                } else {
1155                    let mut offset = Point::default();
1156                    if let Some(buffer_id) = scroll_to_buffer
1157                        && multi_buffer_snapshot.as_singleton().is_none()
1158                        && !active_editor.read(cx).is_buffer_folded(buffer_id, cx)
1159                    {
1160                        offset.y = -(active_editor.read(cx).file_header_size() as f64);
1161                    }
1162
1163                    active_editor.update(cx, |editor, cx| {
1164                        editor.set_scroll_anchor(ScrollAnchor { offset, anchor }, window, cx);
1165                    });
1166                }
1167
1168                if change_focus {
1169                    active_editor.focus_handle(cx).focus(window);
1170                } else {
1171                    self.focus_handle.focus(window);
1172                }
1173            }
1174        }
1175    }
1176
1177    fn select_next(&mut self, _: &SelectNext, window: &mut Window, cx: &mut Context<Self>) {
1178        if let Some(entry_to_select) = self.selected_entry().and_then(|selected_entry| {
1179            self.cached_entries
1180                .iter()
1181                .map(|cached_entry| &cached_entry.entry)
1182                .skip_while(|entry| entry != &selected_entry)
1183                .nth(1)
1184                .cloned()
1185        }) {
1186            self.select_entry(entry_to_select, true, window, cx);
1187        } else {
1188            self.select_first(&SelectFirst {}, window, cx)
1189        }
1190        if let Some(selected_entry) = self.selected_entry().cloned() {
1191            self.scroll_editor_to_entry(&selected_entry, true, false, window, cx);
1192        }
1193    }
1194
1195    fn select_previous(&mut self, _: &SelectPrevious, window: &mut Window, cx: &mut Context<Self>) {
1196        if let Some(entry_to_select) = self.selected_entry().and_then(|selected_entry| {
1197            self.cached_entries
1198                .iter()
1199                .rev()
1200                .map(|cached_entry| &cached_entry.entry)
1201                .skip_while(|entry| entry != &selected_entry)
1202                .nth(1)
1203                .cloned()
1204        }) {
1205            self.select_entry(entry_to_select, true, window, cx);
1206        } else {
1207            self.select_last(&SelectLast, window, cx)
1208        }
1209        if let Some(selected_entry) = self.selected_entry().cloned() {
1210            self.scroll_editor_to_entry(&selected_entry, true, false, window, cx);
1211        }
1212    }
1213
1214    fn select_parent(&mut self, _: &SelectParent, window: &mut Window, cx: &mut Context<Self>) {
1215        if let Some(entry_to_select) = self.selected_entry().and_then(|selected_entry| {
1216            let mut previous_entries = self
1217                .cached_entries
1218                .iter()
1219                .rev()
1220                .map(|cached_entry| &cached_entry.entry)
1221                .skip_while(|entry| entry != &selected_entry)
1222                .skip(1);
1223            match &selected_entry {
1224                PanelEntry::Fs(fs_entry) => match fs_entry {
1225                    FsEntry::ExternalFile(..) => None,
1226                    FsEntry::File(FsEntryFile {
1227                        worktree_id, entry, ..
1228                    })
1229                    | FsEntry::Directory(FsEntryDirectory {
1230                        worktree_id, entry, ..
1231                    }) => entry.path.parent().and_then(|parent_path| {
1232                        previous_entries.find(|entry| match entry {
1233                            PanelEntry::Fs(FsEntry::Directory(directory)) => {
1234                                directory.worktree_id == *worktree_id
1235                                    && directory.entry.path.as_ref() == parent_path
1236                            }
1237                            PanelEntry::FoldedDirs(FoldedDirsEntry {
1238                                worktree_id: dirs_worktree_id,
1239                                entries: dirs,
1240                                ..
1241                            }) => {
1242                                dirs_worktree_id == worktree_id
1243                                    && dirs
1244                                        .last()
1245                                        .is_some_and(|dir| dir.path.as_ref() == parent_path)
1246                            }
1247                            _ => false,
1248                        })
1249                    }),
1250                },
1251                PanelEntry::FoldedDirs(folded_dirs) => folded_dirs
1252                    .entries
1253                    .first()
1254                    .and_then(|entry| entry.path.parent())
1255                    .and_then(|parent_path| {
1256                        previous_entries.find(|entry| {
1257                            if let PanelEntry::Fs(FsEntry::Directory(directory)) = entry {
1258                                directory.worktree_id == folded_dirs.worktree_id
1259                                    && directory.entry.path.as_ref() == parent_path
1260                            } else {
1261                                false
1262                            }
1263                        })
1264                    }),
1265                PanelEntry::Outline(OutlineEntry::Excerpt(excerpt)) => {
1266                    previous_entries.find(|entry| match entry {
1267                        PanelEntry::Fs(FsEntry::File(file)) => {
1268                            file.buffer_id == excerpt.buffer_id
1269                                && file.excerpts.contains(&excerpt.id)
1270                        }
1271                        PanelEntry::Fs(FsEntry::ExternalFile(external_file)) => {
1272                            external_file.buffer_id == excerpt.buffer_id
1273                                && external_file.excerpts.contains(&excerpt.id)
1274                        }
1275                        _ => false,
1276                    })
1277                }
1278                PanelEntry::Outline(OutlineEntry::Outline(outline)) => {
1279                    previous_entries.find(|entry| {
1280                        if let PanelEntry::Outline(OutlineEntry::Excerpt(excerpt)) = entry {
1281                            outline.buffer_id == excerpt.buffer_id
1282                                && outline.excerpt_id == excerpt.id
1283                        } else {
1284                            false
1285                        }
1286                    })
1287                }
1288                PanelEntry::Search(_) => {
1289                    previous_entries.find(|entry| !matches!(entry, PanelEntry::Search(_)))
1290                }
1291            }
1292        }) {
1293            self.select_entry(entry_to_select.clone(), true, window, cx);
1294        } else {
1295            self.select_first(&SelectFirst {}, window, cx);
1296        }
1297    }
1298
1299    fn select_first(&mut self, _: &SelectFirst, window: &mut Window, cx: &mut Context<Self>) {
1300        if let Some(first_entry) = self.cached_entries.first() {
1301            self.select_entry(first_entry.entry.clone(), true, window, cx);
1302        }
1303    }
1304
1305    fn select_last(&mut self, _: &SelectLast, window: &mut Window, cx: &mut Context<Self>) {
1306        if let Some(new_selection) = self
1307            .cached_entries
1308            .iter()
1309            .rev()
1310            .map(|cached_entry| &cached_entry.entry)
1311            .next()
1312        {
1313            self.select_entry(new_selection.clone(), true, window, cx);
1314        }
1315    }
1316
1317    fn autoscroll(&mut self, cx: &mut Context<Self>) {
1318        if let Some(selected_entry) = self.selected_entry() {
1319            let index = self
1320                .cached_entries
1321                .iter()
1322                .position(|cached_entry| &cached_entry.entry == selected_entry);
1323            if let Some(index) = index {
1324                self.scroll_handle
1325                    .scroll_to_item(index, ScrollStrategy::Center);
1326                cx.notify();
1327            }
1328        }
1329    }
1330
1331    fn focus_in(&mut self, window: &mut Window, cx: &mut Context<Self>) {
1332        if !self.focus_handle.contains_focused(window, cx) {
1333            cx.emit(Event::Focus);
1334        }
1335    }
1336
1337    fn deploy_context_menu(
1338        &mut self,
1339        position: Point<Pixels>,
1340        entry: PanelEntry,
1341        window: &mut Window,
1342        cx: &mut Context<Self>,
1343    ) {
1344        self.select_entry(entry.clone(), true, window, cx);
1345        let is_root = match &entry {
1346            PanelEntry::Fs(FsEntry::File(FsEntryFile {
1347                worktree_id, entry, ..
1348            }))
1349            | PanelEntry::Fs(FsEntry::Directory(FsEntryDirectory {
1350                worktree_id, entry, ..
1351            })) => self
1352                .project
1353                .read(cx)
1354                .worktree_for_id(*worktree_id, cx)
1355                .map(|worktree| {
1356                    worktree.read(cx).root_entry().map(|entry| entry.id) == Some(entry.id)
1357                })
1358                .unwrap_or(false),
1359            PanelEntry::FoldedDirs(FoldedDirsEntry {
1360                worktree_id,
1361                entries,
1362                ..
1363            }) => entries
1364                .first()
1365                .and_then(|entry| {
1366                    self.project
1367                        .read(cx)
1368                        .worktree_for_id(*worktree_id, cx)
1369                        .map(|worktree| {
1370                            worktree.read(cx).root_entry().map(|entry| entry.id) == Some(entry.id)
1371                        })
1372                })
1373                .unwrap_or(false),
1374            PanelEntry::Fs(FsEntry::ExternalFile(..)) => false,
1375            PanelEntry::Outline(..) => {
1376                cx.notify();
1377                return;
1378            }
1379            PanelEntry::Search(_) => {
1380                cx.notify();
1381                return;
1382            }
1383        };
1384        let auto_fold_dirs = OutlinePanelSettings::get_global(cx).auto_fold_dirs;
1385        let is_foldable = auto_fold_dirs && !is_root && self.is_foldable(&entry);
1386        let is_unfoldable = auto_fold_dirs && !is_root && self.is_unfoldable(&entry);
1387
1388        let context_menu = ContextMenu::build(window, cx, |menu, _, _| {
1389            menu.context(self.focus_handle.clone())
1390                .when(cfg!(target_os = "macos"), |menu| {
1391                    menu.action("Reveal in Finder", Box::new(RevealInFileManager))
1392                })
1393                .when(cfg!(not(target_os = "macos")), |menu| {
1394                    menu.action("Reveal in File Manager", Box::new(RevealInFileManager))
1395                })
1396                .action("Open in Terminal", Box::new(OpenInTerminal))
1397                .when(is_unfoldable, |menu| {
1398                    menu.action("Unfold Directory", Box::new(UnfoldDirectory))
1399                })
1400                .when(is_foldable, |menu| {
1401                    menu.action("Fold Directory", Box::new(FoldDirectory))
1402                })
1403                .separator()
1404                .action("Copy Path", Box::new(zed_actions::workspace::CopyPath))
1405                .action(
1406                    "Copy Relative Path",
1407                    Box::new(zed_actions::workspace::CopyRelativePath),
1408                )
1409        });
1410        window.focus(&context_menu.focus_handle(cx));
1411        let subscription = cx.subscribe(&context_menu, |outline_panel, _, _: &DismissEvent, cx| {
1412            outline_panel.context_menu.take();
1413            cx.notify();
1414        });
1415        self.context_menu = Some((context_menu, position, subscription));
1416        cx.notify();
1417    }
1418
1419    const fn is_unfoldable(&self, entry: &PanelEntry) -> bool {
1420        matches!(entry, PanelEntry::FoldedDirs(..))
1421    }
1422
1423    fn is_foldable(&self, entry: &PanelEntry) -> bool {
1424        let (directory_worktree, directory_entry) = match entry {
1425            PanelEntry::Fs(FsEntry::Directory(FsEntryDirectory {
1426                worktree_id,
1427                entry: directory_entry,
1428                ..
1429            })) => (*worktree_id, Some(directory_entry)),
1430            _ => return false,
1431        };
1432        let Some(directory_entry) = directory_entry else {
1433            return false;
1434        };
1435
1436        if self
1437            .unfolded_dirs
1438            .get(&directory_worktree)
1439            .is_none_or(|unfolded_dirs| !unfolded_dirs.contains(&directory_entry.id))
1440        {
1441            return false;
1442        }
1443
1444        let children = self
1445            .fs_children_count
1446            .get(&directory_worktree)
1447            .and_then(|entries| entries.get(&directory_entry.path))
1448            .copied()
1449            .unwrap_or_default();
1450
1451        children.may_be_fold_part() && children.dirs > 0
1452    }
1453
1454    fn expand_selected_entry(
1455        &mut self,
1456        _: &ExpandSelectedEntry,
1457        window: &mut Window,
1458        cx: &mut Context<Self>,
1459    ) {
1460        let Some(active_editor) = self.active_editor() else {
1461            return;
1462        };
1463        let Some(selected_entry) = self.selected_entry().cloned() else {
1464            return;
1465        };
1466        let mut buffers_to_unfold = HashSet::default();
1467        let entry_to_expand = match &selected_entry {
1468            PanelEntry::FoldedDirs(FoldedDirsEntry {
1469                entries: dir_entries,
1470                worktree_id,
1471                ..
1472            }) => dir_entries.last().map(|entry| {
1473                buffers_to_unfold.extend(self.buffers_inside_directory(*worktree_id, entry));
1474                CollapsedEntry::Dir(*worktree_id, entry.id)
1475            }),
1476            PanelEntry::Fs(FsEntry::Directory(FsEntryDirectory {
1477                worktree_id, entry, ..
1478            })) => {
1479                buffers_to_unfold.extend(self.buffers_inside_directory(*worktree_id, entry));
1480                Some(CollapsedEntry::Dir(*worktree_id, entry.id))
1481            }
1482            PanelEntry::Fs(FsEntry::File(FsEntryFile {
1483                worktree_id,
1484                buffer_id,
1485                ..
1486            })) => {
1487                buffers_to_unfold.insert(*buffer_id);
1488                Some(CollapsedEntry::File(*worktree_id, *buffer_id))
1489            }
1490            PanelEntry::Fs(FsEntry::ExternalFile(external_file)) => {
1491                buffers_to_unfold.insert(external_file.buffer_id);
1492                Some(CollapsedEntry::ExternalFile(external_file.buffer_id))
1493            }
1494            PanelEntry::Outline(OutlineEntry::Excerpt(excerpt)) => {
1495                Some(CollapsedEntry::Excerpt(excerpt.buffer_id, excerpt.id))
1496            }
1497            PanelEntry::Outline(OutlineEntry::Outline(outline)) => Some(CollapsedEntry::Outline(
1498                outline.buffer_id,
1499                outline.excerpt_id,
1500                outline.outline.range.clone(),
1501            )),
1502            PanelEntry::Search(_) => return,
1503        };
1504        let Some(collapsed_entry) = entry_to_expand else {
1505            return;
1506        };
1507        let expanded = self.collapsed_entries.remove(&collapsed_entry);
1508        if expanded {
1509            if let CollapsedEntry::Dir(worktree_id, dir_entry_id) = collapsed_entry {
1510                let task = self.project.update(cx, |project, cx| {
1511                    project.expand_entry(worktree_id, dir_entry_id, cx)
1512                });
1513                if let Some(task) = task {
1514                    task.detach_and_log_err(cx);
1515                }
1516            };
1517
1518            active_editor.update(cx, |editor, cx| {
1519                buffers_to_unfold.retain(|buffer_id| editor.is_buffer_folded(*buffer_id, cx));
1520            });
1521            self.select_entry(selected_entry, true, window, cx);
1522            if buffers_to_unfold.is_empty() {
1523                self.update_cached_entries(None, window, cx);
1524            } else {
1525                self.toggle_buffers_fold(buffers_to_unfold, false, window, cx)
1526                    .detach();
1527            }
1528        } else {
1529            self.select_next(&SelectNext, window, cx)
1530        }
1531    }
1532
1533    fn collapse_selected_entry(
1534        &mut self,
1535        _: &CollapseSelectedEntry,
1536        window: &mut Window,
1537        cx: &mut Context<Self>,
1538    ) {
1539        let Some(active_editor) = self.active_editor() else {
1540            return;
1541        };
1542        let Some(selected_entry) = self.selected_entry().cloned() else {
1543            return;
1544        };
1545
1546        let mut buffers_to_fold = HashSet::default();
1547        let collapsed = match &selected_entry {
1548            PanelEntry::Fs(FsEntry::Directory(FsEntryDirectory {
1549                worktree_id, entry, ..
1550            })) => {
1551                if self
1552                    .collapsed_entries
1553                    .insert(CollapsedEntry::Dir(*worktree_id, entry.id))
1554                {
1555                    buffers_to_fold.extend(self.buffers_inside_directory(*worktree_id, entry));
1556                    true
1557                } else {
1558                    false
1559                }
1560            }
1561            PanelEntry::Fs(FsEntry::File(FsEntryFile {
1562                worktree_id,
1563                buffer_id,
1564                ..
1565            })) => {
1566                if self
1567                    .collapsed_entries
1568                    .insert(CollapsedEntry::File(*worktree_id, *buffer_id))
1569                {
1570                    buffers_to_fold.insert(*buffer_id);
1571                    true
1572                } else {
1573                    false
1574                }
1575            }
1576            PanelEntry::Fs(FsEntry::ExternalFile(external_file)) => {
1577                if self
1578                    .collapsed_entries
1579                    .insert(CollapsedEntry::ExternalFile(external_file.buffer_id))
1580                {
1581                    buffers_to_fold.insert(external_file.buffer_id);
1582                    true
1583                } else {
1584                    false
1585                }
1586            }
1587            PanelEntry::FoldedDirs(folded_dirs) => {
1588                let mut folded = false;
1589                if let Some(dir_entry) = folded_dirs.entries.last()
1590                    && self
1591                        .collapsed_entries
1592                        .insert(CollapsedEntry::Dir(folded_dirs.worktree_id, dir_entry.id))
1593                {
1594                    folded = true;
1595                    buffers_to_fold
1596                        .extend(self.buffers_inside_directory(folded_dirs.worktree_id, dir_entry));
1597                }
1598                folded
1599            }
1600            PanelEntry::Outline(OutlineEntry::Excerpt(excerpt)) => self
1601                .collapsed_entries
1602                .insert(CollapsedEntry::Excerpt(excerpt.buffer_id, excerpt.id)),
1603            PanelEntry::Outline(OutlineEntry::Outline(outline)) => {
1604                self.collapsed_entries.insert(CollapsedEntry::Outline(
1605                    outline.buffer_id,
1606                    outline.excerpt_id,
1607                    outline.outline.range.clone(),
1608                ))
1609            }
1610            PanelEntry::Search(_) => false,
1611        };
1612
1613        if collapsed {
1614            active_editor.update(cx, |editor, cx| {
1615                buffers_to_fold.retain(|buffer_id| !editor.is_buffer_folded(*buffer_id, cx));
1616            });
1617            self.select_entry(selected_entry, true, window, cx);
1618            if buffers_to_fold.is_empty() {
1619                self.update_cached_entries(None, window, cx);
1620            } else {
1621                self.toggle_buffers_fold(buffers_to_fold, true, window, cx)
1622                    .detach();
1623            }
1624        } else {
1625            self.select_parent(&SelectParent, window, cx);
1626        }
1627    }
1628
1629    pub fn expand_all_entries(
1630        &mut self,
1631        _: &ExpandAllEntries,
1632        window: &mut Window,
1633        cx: &mut Context<Self>,
1634    ) {
1635        let Some(active_editor) = self.active_editor() else {
1636            return;
1637        };
1638        let mut buffers_to_unfold = HashSet::default();
1639        let expanded_entries =
1640            self.fs_entries
1641                .iter()
1642                .fold(HashSet::default(), |mut entries, fs_entry| {
1643                    match fs_entry {
1644                        FsEntry::ExternalFile(external_file) => {
1645                            buffers_to_unfold.insert(external_file.buffer_id);
1646                            entries.insert(CollapsedEntry::ExternalFile(external_file.buffer_id));
1647                            entries.extend(
1648                                self.excerpts
1649                                    .get(&external_file.buffer_id)
1650                                    .into_iter()
1651                                    .flat_map(|excerpts| {
1652                                        excerpts.keys().map(|excerpt_id| {
1653                                            CollapsedEntry::Excerpt(
1654                                                external_file.buffer_id,
1655                                                *excerpt_id,
1656                                            )
1657                                        })
1658                                    }),
1659                            );
1660                        }
1661                        FsEntry::Directory(directory) => {
1662                            entries.insert(CollapsedEntry::Dir(
1663                                directory.worktree_id,
1664                                directory.entry.id,
1665                            ));
1666                        }
1667                        FsEntry::File(file) => {
1668                            buffers_to_unfold.insert(file.buffer_id);
1669                            entries.insert(CollapsedEntry::File(file.worktree_id, file.buffer_id));
1670                            entries.extend(
1671                                self.excerpts.get(&file.buffer_id).into_iter().flat_map(
1672                                    |excerpts| {
1673                                        excerpts.keys().map(|excerpt_id| {
1674                                            CollapsedEntry::Excerpt(file.buffer_id, *excerpt_id)
1675                                        })
1676                                    },
1677                                ),
1678                            );
1679                        }
1680                    };
1681                    entries
1682                });
1683        self.collapsed_entries
1684            .retain(|entry| !expanded_entries.contains(entry));
1685        active_editor.update(cx, |editor, cx| {
1686            buffers_to_unfold.retain(|buffer_id| editor.is_buffer_folded(*buffer_id, cx));
1687        });
1688        if buffers_to_unfold.is_empty() {
1689            self.update_cached_entries(None, window, cx);
1690        } else {
1691            self.toggle_buffers_fold(buffers_to_unfold, false, window, cx)
1692                .detach();
1693        }
1694    }
1695
1696    pub fn collapse_all_entries(
1697        &mut self,
1698        _: &CollapseAllEntries,
1699        window: &mut Window,
1700        cx: &mut Context<Self>,
1701    ) {
1702        let Some(active_editor) = self.active_editor() else {
1703            return;
1704        };
1705        let mut buffers_to_fold = HashSet::default();
1706        let new_entries = self
1707            .cached_entries
1708            .iter()
1709            .flat_map(|cached_entry| match &cached_entry.entry {
1710                PanelEntry::Fs(FsEntry::Directory(FsEntryDirectory {
1711                    worktree_id, entry, ..
1712                })) => Some(CollapsedEntry::Dir(*worktree_id, entry.id)),
1713                PanelEntry::Fs(FsEntry::File(FsEntryFile {
1714                    worktree_id,
1715                    buffer_id,
1716                    ..
1717                })) => {
1718                    buffers_to_fold.insert(*buffer_id);
1719                    Some(CollapsedEntry::File(*worktree_id, *buffer_id))
1720                }
1721                PanelEntry::Fs(FsEntry::ExternalFile(external_file)) => {
1722                    buffers_to_fold.insert(external_file.buffer_id);
1723                    Some(CollapsedEntry::ExternalFile(external_file.buffer_id))
1724                }
1725                PanelEntry::FoldedDirs(FoldedDirsEntry {
1726                    worktree_id,
1727                    entries,
1728                    ..
1729                }) => Some(CollapsedEntry::Dir(*worktree_id, entries.last()?.id)),
1730                PanelEntry::Outline(OutlineEntry::Excerpt(excerpt)) => {
1731                    Some(CollapsedEntry::Excerpt(excerpt.buffer_id, excerpt.id))
1732                }
1733                PanelEntry::Search(_) | PanelEntry::Outline(..) => None,
1734            })
1735            .collect::<Vec<_>>();
1736        self.collapsed_entries.extend(new_entries);
1737
1738        active_editor.update(cx, |editor, cx| {
1739            buffers_to_fold.retain(|buffer_id| !editor.is_buffer_folded(*buffer_id, cx));
1740        });
1741        if buffers_to_fold.is_empty() {
1742            self.update_cached_entries(None, window, cx);
1743        } else {
1744            self.toggle_buffers_fold(buffers_to_fold, true, window, cx)
1745                .detach();
1746        }
1747    }
1748
1749    fn toggle_expanded(&mut self, entry: &PanelEntry, window: &mut Window, cx: &mut Context<Self>) {
1750        let Some(active_editor) = self.active_editor() else {
1751            return;
1752        };
1753        let mut fold = false;
1754        let mut buffers_to_toggle = HashSet::default();
1755        match entry {
1756            PanelEntry::Fs(FsEntry::Directory(FsEntryDirectory {
1757                worktree_id,
1758                entry: dir_entry,
1759                ..
1760            })) => {
1761                let entry_id = dir_entry.id;
1762                let collapsed_entry = CollapsedEntry::Dir(*worktree_id, entry_id);
1763                buffers_to_toggle.extend(self.buffers_inside_directory(*worktree_id, dir_entry));
1764                if self.collapsed_entries.remove(&collapsed_entry) {
1765                    self.project
1766                        .update(cx, |project, cx| {
1767                            project.expand_entry(*worktree_id, entry_id, cx)
1768                        })
1769                        .unwrap_or_else(|| Task::ready(Ok(())))
1770                        .detach_and_log_err(cx);
1771                } else {
1772                    self.collapsed_entries.insert(collapsed_entry);
1773                    fold = true;
1774                }
1775            }
1776            PanelEntry::Fs(FsEntry::File(FsEntryFile {
1777                worktree_id,
1778                buffer_id,
1779                ..
1780            })) => {
1781                let collapsed_entry = CollapsedEntry::File(*worktree_id, *buffer_id);
1782                buffers_to_toggle.insert(*buffer_id);
1783                if !self.collapsed_entries.remove(&collapsed_entry) {
1784                    self.collapsed_entries.insert(collapsed_entry);
1785                    fold = true;
1786                }
1787            }
1788            PanelEntry::Fs(FsEntry::ExternalFile(external_file)) => {
1789                let collapsed_entry = CollapsedEntry::ExternalFile(external_file.buffer_id);
1790                buffers_to_toggle.insert(external_file.buffer_id);
1791                if !self.collapsed_entries.remove(&collapsed_entry) {
1792                    self.collapsed_entries.insert(collapsed_entry);
1793                    fold = true;
1794                }
1795            }
1796            PanelEntry::FoldedDirs(FoldedDirsEntry {
1797                worktree_id,
1798                entries: dir_entries,
1799                ..
1800            }) => {
1801                if let Some(dir_entry) = dir_entries.first() {
1802                    let entry_id = dir_entry.id;
1803                    let collapsed_entry = CollapsedEntry::Dir(*worktree_id, entry_id);
1804                    buffers_to_toggle
1805                        .extend(self.buffers_inside_directory(*worktree_id, dir_entry));
1806                    if self.collapsed_entries.remove(&collapsed_entry) {
1807                        self.project
1808                            .update(cx, |project, cx| {
1809                                project.expand_entry(*worktree_id, entry_id, cx)
1810                            })
1811                            .unwrap_or_else(|| Task::ready(Ok(())))
1812                            .detach_and_log_err(cx);
1813                    } else {
1814                        self.collapsed_entries.insert(collapsed_entry);
1815                        fold = true;
1816                    }
1817                }
1818            }
1819            PanelEntry::Outline(OutlineEntry::Excerpt(excerpt)) => {
1820                let collapsed_entry = CollapsedEntry::Excerpt(excerpt.buffer_id, excerpt.id);
1821                if !self.collapsed_entries.remove(&collapsed_entry) {
1822                    self.collapsed_entries.insert(collapsed_entry);
1823                }
1824            }
1825            PanelEntry::Outline(OutlineEntry::Outline(outline)) => {
1826                let collapsed_entry = CollapsedEntry::Outline(
1827                    outline.buffer_id,
1828                    outline.excerpt_id,
1829                    outline.outline.range.clone(),
1830                );
1831                if !self.collapsed_entries.remove(&collapsed_entry) {
1832                    self.collapsed_entries.insert(collapsed_entry);
1833                }
1834            }
1835            _ => {}
1836        }
1837
1838        active_editor.update(cx, |editor, cx| {
1839            buffers_to_toggle.retain(|buffer_id| {
1840                let folded = editor.is_buffer_folded(*buffer_id, cx);
1841                if fold { !folded } else { folded }
1842            });
1843        });
1844
1845        self.select_entry(entry.clone(), true, window, cx);
1846        if buffers_to_toggle.is_empty() {
1847            self.update_cached_entries(None, window, cx);
1848        } else {
1849            self.toggle_buffers_fold(buffers_to_toggle, fold, window, cx)
1850                .detach();
1851        }
1852    }
1853
1854    fn toggle_buffers_fold(
1855        &self,
1856        buffers: HashSet<BufferId>,
1857        fold: bool,
1858        window: &mut Window,
1859        cx: &mut Context<Self>,
1860    ) -> Task<()> {
1861        let Some(active_editor) = self.active_editor() else {
1862            return Task::ready(());
1863        };
1864        cx.spawn_in(window, async move |outline_panel, cx| {
1865            outline_panel
1866                .update_in(cx, |outline_panel, window, cx| {
1867                    active_editor.update(cx, |editor, cx| {
1868                        for buffer_id in buffers {
1869                            outline_panel
1870                                .preserve_selection_on_buffer_fold_toggles
1871                                .insert(buffer_id);
1872                            if fold {
1873                                editor.fold_buffer(buffer_id, cx);
1874                            } else {
1875                                editor.unfold_buffer(buffer_id, cx);
1876                            }
1877                        }
1878                    });
1879                    if let Some(selection) = outline_panel.selected_entry().cloned() {
1880                        outline_panel.scroll_editor_to_entry(&selection, false, false, window, cx);
1881                    }
1882                })
1883                .ok();
1884        })
1885    }
1886
1887    fn copy_path(
1888        &mut self,
1889        _: &zed_actions::workspace::CopyPath,
1890        _: &mut Window,
1891        cx: &mut Context<Self>,
1892    ) {
1893        if let Some(clipboard_text) = self
1894            .selected_entry()
1895            .and_then(|entry| self.abs_path(entry, cx))
1896            .map(|p| p.to_string_lossy().into_owned())
1897        {
1898            cx.write_to_clipboard(ClipboardItem::new_string(clipboard_text));
1899        }
1900    }
1901
1902    fn copy_relative_path(
1903        &mut self,
1904        _: &zed_actions::workspace::CopyRelativePath,
1905        _: &mut Window,
1906        cx: &mut Context<Self>,
1907    ) {
1908        let path_style = self.project.read(cx).path_style(cx);
1909        if let Some(clipboard_text) = self
1910            .selected_entry()
1911            .and_then(|entry| match entry {
1912                PanelEntry::Fs(entry) => self.relative_path(entry, cx),
1913                PanelEntry::FoldedDirs(folded_dirs) => {
1914                    folded_dirs.entries.last().map(|entry| entry.path.clone())
1915                }
1916                PanelEntry::Search(_) | PanelEntry::Outline(..) => None,
1917            })
1918            .map(|p| p.display(path_style).to_string())
1919        {
1920            cx.write_to_clipboard(ClipboardItem::new_string(clipboard_text));
1921        }
1922    }
1923
1924    fn reveal_in_finder(
1925        &mut self,
1926        _: &RevealInFileManager,
1927        _: &mut Window,
1928        cx: &mut Context<Self>,
1929    ) {
1930        if let Some(abs_path) = self
1931            .selected_entry()
1932            .and_then(|entry| self.abs_path(entry, cx))
1933        {
1934            cx.reveal_path(&abs_path);
1935        }
1936    }
1937
1938    fn open_in_terminal(
1939        &mut self,
1940        _: &OpenInTerminal,
1941        window: &mut Window,
1942        cx: &mut Context<Self>,
1943    ) {
1944        let selected_entry = self.selected_entry();
1945        let abs_path = selected_entry.and_then(|entry| self.abs_path(entry, cx));
1946        let working_directory = if let (
1947            Some(abs_path),
1948            Some(PanelEntry::Fs(FsEntry::File(..) | FsEntry::ExternalFile(..))),
1949        ) = (&abs_path, selected_entry)
1950        {
1951            abs_path.parent().map(|p| p.to_owned())
1952        } else {
1953            abs_path
1954        };
1955
1956        if let Some(working_directory) = working_directory {
1957            window.dispatch_action(
1958                workspace::OpenTerminal { working_directory }.boxed_clone(),
1959                cx,
1960            )
1961        }
1962    }
1963
1964    fn reveal_entry_for_selection(
1965        &mut self,
1966        editor: Entity<Editor>,
1967        window: &mut Window,
1968        cx: &mut Context<Self>,
1969    ) {
1970        if !self.active
1971            || !OutlinePanelSettings::get_global(cx).auto_reveal_entries
1972            || self.focus_handle.contains_focused(window, cx)
1973        {
1974            return;
1975        }
1976        let project = self.project.clone();
1977        self.reveal_selection_task = cx.spawn_in(window, async move |outline_panel, cx| {
1978            cx.background_executor().timer(UPDATE_DEBOUNCE).await;
1979            let entry_with_selection =
1980                outline_panel.update_in(cx, |outline_panel, window, cx| {
1981                    outline_panel.location_for_editor_selection(&editor, window, cx)
1982                })?;
1983            let Some(entry_with_selection) = entry_with_selection else {
1984                outline_panel.update(cx, |outline_panel, cx| {
1985                    outline_panel.selected_entry = SelectedEntry::None;
1986                    cx.notify();
1987                })?;
1988                return Ok(());
1989            };
1990            let related_buffer_entry = match &entry_with_selection {
1991                PanelEntry::Fs(FsEntry::File(FsEntryFile {
1992                    worktree_id,
1993                    buffer_id,
1994                    ..
1995                })) => project.update(cx, |project, cx| {
1996                    let entry_id = project
1997                        .buffer_for_id(*buffer_id, cx)
1998                        .and_then(|buffer| buffer.read(cx).entry_id(cx));
1999                    project
2000                        .worktree_for_id(*worktree_id, cx)
2001                        .zip(entry_id)
2002                        .and_then(|(worktree, entry_id)| {
2003                            let entry = worktree.read(cx).entry_for_id(entry_id)?.clone();
2004                            Some((worktree, entry))
2005                        })
2006                })?,
2007                PanelEntry::Outline(outline_entry) => {
2008                    let (buffer_id, excerpt_id) = outline_entry.ids();
2009                    outline_panel.update(cx, |outline_panel, cx| {
2010                        outline_panel
2011                            .collapsed_entries
2012                            .remove(&CollapsedEntry::ExternalFile(buffer_id));
2013                        outline_panel
2014                            .collapsed_entries
2015                            .remove(&CollapsedEntry::Excerpt(buffer_id, excerpt_id));
2016                        let project = outline_panel.project.read(cx);
2017                        let entry_id = project
2018                            .buffer_for_id(buffer_id, cx)
2019                            .and_then(|buffer| buffer.read(cx).entry_id(cx));
2020
2021                        entry_id.and_then(|entry_id| {
2022                            project
2023                                .worktree_for_entry(entry_id, cx)
2024                                .and_then(|worktree| {
2025                                    let worktree_id = worktree.read(cx).id();
2026                                    outline_panel
2027                                        .collapsed_entries
2028                                        .remove(&CollapsedEntry::File(worktree_id, buffer_id));
2029                                    let entry = worktree.read(cx).entry_for_id(entry_id)?.clone();
2030                                    Some((worktree, entry))
2031                                })
2032                        })
2033                    })?
2034                }
2035                PanelEntry::Fs(FsEntry::ExternalFile(..)) => None,
2036                PanelEntry::Search(SearchEntry { match_range, .. }) => match_range
2037                    .start
2038                    .buffer_id
2039                    .or(match_range.end.buffer_id)
2040                    .map(|buffer_id| {
2041                        outline_panel.update(cx, |outline_panel, cx| {
2042                            outline_panel
2043                                .collapsed_entries
2044                                .remove(&CollapsedEntry::ExternalFile(buffer_id));
2045                            let project = project.read(cx);
2046                            let entry_id = project
2047                                .buffer_for_id(buffer_id, cx)
2048                                .and_then(|buffer| buffer.read(cx).entry_id(cx));
2049
2050                            entry_id.and_then(|entry_id| {
2051                                project
2052                                    .worktree_for_entry(entry_id, cx)
2053                                    .and_then(|worktree| {
2054                                        let worktree_id = worktree.read(cx).id();
2055                                        outline_panel
2056                                            .collapsed_entries
2057                                            .remove(&CollapsedEntry::File(worktree_id, buffer_id));
2058                                        let entry =
2059                                            worktree.read(cx).entry_for_id(entry_id)?.clone();
2060                                        Some((worktree, entry))
2061                                    })
2062                            })
2063                        })
2064                    })
2065                    .transpose()?
2066                    .flatten(),
2067                _ => return anyhow::Ok(()),
2068            };
2069            if let Some((worktree, buffer_entry)) = related_buffer_entry {
2070                outline_panel.update(cx, |outline_panel, cx| {
2071                    let worktree_id = worktree.read(cx).id();
2072                    let mut dirs_to_expand = Vec::new();
2073                    {
2074                        let mut traversal = worktree.read(cx).traverse_from_path(
2075                            true,
2076                            true,
2077                            true,
2078                            buffer_entry.path.as_ref(),
2079                        );
2080                        let mut current_entry = buffer_entry;
2081                        loop {
2082                            if current_entry.is_dir()
2083                                && outline_panel
2084                                    .collapsed_entries
2085                                    .remove(&CollapsedEntry::Dir(worktree_id, current_entry.id))
2086                            {
2087                                dirs_to_expand.push(current_entry.id);
2088                            }
2089
2090                            if traversal.back_to_parent()
2091                                && let Some(parent_entry) = traversal.entry()
2092                            {
2093                                current_entry = parent_entry.clone();
2094                                continue;
2095                            }
2096                            break;
2097                        }
2098                    }
2099                    for dir_to_expand in dirs_to_expand {
2100                        project
2101                            .update(cx, |project, cx| {
2102                                project.expand_entry(worktree_id, dir_to_expand, cx)
2103                            })
2104                            .unwrap_or_else(|| Task::ready(Ok(())))
2105                            .detach_and_log_err(cx)
2106                    }
2107                })?
2108            }
2109
2110            outline_panel.update_in(cx, |outline_panel, window, cx| {
2111                outline_panel.select_entry(entry_with_selection, false, window, cx);
2112                outline_panel.update_cached_entries(None, window, cx);
2113            })?;
2114
2115            anyhow::Ok(())
2116        });
2117    }
2118
2119    fn render_excerpt(
2120        &self,
2121        excerpt: &OutlineEntryExcerpt,
2122        depth: usize,
2123        window: &mut Window,
2124        cx: &mut Context<OutlinePanel>,
2125    ) -> Option<Stateful<Div>> {
2126        let item_id = ElementId::from(excerpt.id.to_proto() as usize);
2127        let is_active = match self.selected_entry() {
2128            Some(PanelEntry::Outline(OutlineEntry::Excerpt(selected_excerpt))) => {
2129                selected_excerpt.buffer_id == excerpt.buffer_id && selected_excerpt.id == excerpt.id
2130            }
2131            _ => false,
2132        };
2133        let has_outlines = self
2134            .excerpts
2135            .get(&excerpt.buffer_id)
2136            .and_then(|excerpts| match &excerpts.get(&excerpt.id)?.outlines {
2137                ExcerptOutlines::Outlines(outlines) => Some(outlines),
2138                ExcerptOutlines::Invalidated(outlines) => Some(outlines),
2139                ExcerptOutlines::NotFetched => None,
2140            })
2141            .is_some_and(|outlines| !outlines.is_empty());
2142        let is_expanded = !self
2143            .collapsed_entries
2144            .contains(&CollapsedEntry::Excerpt(excerpt.buffer_id, excerpt.id));
2145        let color = entry_label_color(is_active);
2146        let icon = if has_outlines {
2147            FileIcons::get_chevron_icon(is_expanded, cx)
2148                .map(|icon_path| Icon::from_path(icon_path).color(color).into_any_element())
2149        } else {
2150            None
2151        }
2152        .unwrap_or_else(empty_icon);
2153
2154        let label = self.excerpt_label(excerpt.buffer_id, &excerpt.range, cx)?;
2155        let label_element = Label::new(label)
2156            .single_line()
2157            .color(color)
2158            .into_any_element();
2159
2160        Some(self.entry_element(
2161            PanelEntry::Outline(OutlineEntry::Excerpt(excerpt.clone())),
2162            item_id,
2163            depth,
2164            icon,
2165            is_active,
2166            label_element,
2167            window,
2168            cx,
2169        ))
2170    }
2171
2172    fn excerpt_label(
2173        &self,
2174        buffer_id: BufferId,
2175        range: &ExcerptRange<language::Anchor>,
2176        cx: &App,
2177    ) -> Option<String> {
2178        let buffer_snapshot = self.buffer_snapshot_for_id(buffer_id, cx)?;
2179        let excerpt_range = range.context.to_point(&buffer_snapshot);
2180        Some(format!(
2181            "Lines {}- {}",
2182            excerpt_range.start.row + 1,
2183            excerpt_range.end.row + 1,
2184        ))
2185    }
2186
2187    fn render_outline(
2188        &self,
2189        outline: &OutlineEntryOutline,
2190        depth: usize,
2191        string_match: Option<&StringMatch>,
2192        window: &mut Window,
2193        cx: &mut Context<Self>,
2194    ) -> Stateful<Div> {
2195        let item_id = ElementId::from(SharedString::from(format!(
2196            "{:?}|{:?}{:?}|{:?}",
2197            outline.buffer_id, outline.excerpt_id, outline.outline.range, &outline.outline.text,
2198        )));
2199
2200        let label_element = outline::render_item(
2201            &outline.outline,
2202            string_match
2203                .map(|string_match| string_match.ranges().collect::<Vec<_>>())
2204                .unwrap_or_default(),
2205            cx,
2206        )
2207        .into_any_element();
2208
2209        let is_active = match self.selected_entry() {
2210            Some(PanelEntry::Outline(OutlineEntry::Outline(selected))) => {
2211                outline == selected && outline.outline == selected.outline
2212            }
2213            _ => false,
2214        };
2215
2216        let has_children = self
2217            .outline_children_cache
2218            .get(&outline.buffer_id)
2219            .and_then(|children_map| {
2220                let key = (outline.outline.range.clone(), outline.outline.depth);
2221                children_map.get(&key)
2222            })
2223            .copied()
2224            .unwrap_or(false);
2225        let is_expanded = !self.collapsed_entries.contains(&CollapsedEntry::Outline(
2226            outline.buffer_id,
2227            outline.excerpt_id,
2228            outline.outline.range.clone(),
2229        ));
2230
2231        let icon = if has_children {
2232            FileIcons::get_chevron_icon(is_expanded, cx)
2233                .map(|icon_path| {
2234                    Icon::from_path(icon_path)
2235                        .color(entry_label_color(is_active))
2236                        .into_any_element()
2237                })
2238                .unwrap_or_else(empty_icon)
2239        } else {
2240            empty_icon()
2241        };
2242
2243        self.entry_element(
2244            PanelEntry::Outline(OutlineEntry::Outline(outline.clone())),
2245            item_id,
2246            depth,
2247            icon,
2248            is_active,
2249            label_element,
2250            window,
2251            cx,
2252        )
2253    }
2254
2255    fn render_entry(
2256        &self,
2257        rendered_entry: &FsEntry,
2258        depth: usize,
2259        string_match: Option<&StringMatch>,
2260        window: &mut Window,
2261        cx: &mut Context<Self>,
2262    ) -> Stateful<Div> {
2263        let settings = OutlinePanelSettings::get_global(cx);
2264        let is_active = match self.selected_entry() {
2265            Some(PanelEntry::Fs(selected_entry)) => selected_entry == rendered_entry,
2266            _ => false,
2267        };
2268        let (item_id, label_element, icon) = match rendered_entry {
2269            FsEntry::File(FsEntryFile {
2270                worktree_id, entry, ..
2271            }) => {
2272                let name = self.entry_name(worktree_id, entry, cx);
2273                let color =
2274                    entry_git_aware_label_color(entry.git_summary, entry.is_ignored, is_active);
2275                let icon = if settings.file_icons {
2276                    FileIcons::get_icon(entry.path.as_std_path(), cx)
2277                        .map(|icon_path| Icon::from_path(icon_path).color(color).into_any_element())
2278                } else {
2279                    None
2280                };
2281                (
2282                    ElementId::from(entry.id.to_proto() as usize),
2283                    HighlightedLabel::new(
2284                        name,
2285                        string_match
2286                            .map(|string_match| string_match.positions.clone())
2287                            .unwrap_or_default(),
2288                    )
2289                    .color(color)
2290                    .into_any_element(),
2291                    icon.unwrap_or_else(empty_icon),
2292                )
2293            }
2294            FsEntry::Directory(directory) => {
2295                let name = self.entry_name(&directory.worktree_id, &directory.entry, cx);
2296
2297                let is_expanded = !self.collapsed_entries.contains(&CollapsedEntry::Dir(
2298                    directory.worktree_id,
2299                    directory.entry.id,
2300                ));
2301                let color = entry_git_aware_label_color(
2302                    directory.entry.git_summary,
2303                    directory.entry.is_ignored,
2304                    is_active,
2305                );
2306                let icon = if settings.folder_icons {
2307                    FileIcons::get_folder_icon(is_expanded, directory.entry.path.as_std_path(), cx)
2308                } else {
2309                    FileIcons::get_chevron_icon(is_expanded, cx)
2310                }
2311                .map(Icon::from_path)
2312                .map(|icon| icon.color(color).into_any_element());
2313                (
2314                    ElementId::from(directory.entry.id.to_proto() as usize),
2315                    HighlightedLabel::new(
2316                        name,
2317                        string_match
2318                            .map(|string_match| string_match.positions.clone())
2319                            .unwrap_or_default(),
2320                    )
2321                    .color(color)
2322                    .into_any_element(),
2323                    icon.unwrap_or_else(empty_icon),
2324                )
2325            }
2326            FsEntry::ExternalFile(external_file) => {
2327                let color = entry_label_color(is_active);
2328                let (icon, name) = match self.buffer_snapshot_for_id(external_file.buffer_id, cx) {
2329                    Some(buffer_snapshot) => match buffer_snapshot.file() {
2330                        Some(file) => {
2331                            let path = file.path();
2332                            let icon = if settings.file_icons {
2333                                FileIcons::get_icon(path.as_std_path(), cx)
2334                            } else {
2335                                None
2336                            }
2337                            .map(Icon::from_path)
2338                            .map(|icon| icon.color(color).into_any_element());
2339                            (icon, file_name(path.as_std_path()))
2340                        }
2341                        None => (None, "Untitled".to_string()),
2342                    },
2343                    None => (None, "Unknown buffer".to_string()),
2344                };
2345                (
2346                    ElementId::from(external_file.buffer_id.to_proto() as usize),
2347                    HighlightedLabel::new(
2348                        name,
2349                        string_match
2350                            .map(|string_match| string_match.positions.clone())
2351                            .unwrap_or_default(),
2352                    )
2353                    .color(color)
2354                    .into_any_element(),
2355                    icon.unwrap_or_else(empty_icon),
2356                )
2357            }
2358        };
2359
2360        self.entry_element(
2361            PanelEntry::Fs(rendered_entry.clone()),
2362            item_id,
2363            depth,
2364            icon,
2365            is_active,
2366            label_element,
2367            window,
2368            cx,
2369        )
2370    }
2371
2372    fn render_folded_dirs(
2373        &self,
2374        folded_dir: &FoldedDirsEntry,
2375        depth: usize,
2376        string_match: Option<&StringMatch>,
2377        window: &mut Window,
2378        cx: &mut Context<OutlinePanel>,
2379    ) -> Stateful<Div> {
2380        let settings = OutlinePanelSettings::get_global(cx);
2381        let is_active = match self.selected_entry() {
2382            Some(PanelEntry::FoldedDirs(selected_dirs)) => {
2383                selected_dirs.worktree_id == folded_dir.worktree_id
2384                    && selected_dirs.entries == folded_dir.entries
2385            }
2386            _ => false,
2387        };
2388        let (item_id, label_element, icon) = {
2389            let name = self.dir_names_string(&folded_dir.entries, folded_dir.worktree_id, cx);
2390
2391            let is_expanded = folded_dir.entries.iter().all(|dir| {
2392                !self
2393                    .collapsed_entries
2394                    .contains(&CollapsedEntry::Dir(folded_dir.worktree_id, dir.id))
2395            });
2396            let is_ignored = folded_dir.entries.iter().any(|entry| entry.is_ignored);
2397            let git_status = folded_dir
2398                .entries
2399                .first()
2400                .map(|entry| entry.git_summary)
2401                .unwrap_or_default();
2402            let color = entry_git_aware_label_color(git_status, is_ignored, is_active);
2403            let icon = if settings.folder_icons {
2404                FileIcons::get_folder_icon(is_expanded, &Path::new(&name), cx)
2405            } else {
2406                FileIcons::get_chevron_icon(is_expanded, cx)
2407            }
2408            .map(Icon::from_path)
2409            .map(|icon| icon.color(color).into_any_element());
2410            (
2411                ElementId::from(
2412                    folded_dir
2413                        .entries
2414                        .last()
2415                        .map(|entry| entry.id.to_proto())
2416                        .unwrap_or_else(|| folded_dir.worktree_id.to_proto())
2417                        as usize,
2418                ),
2419                HighlightedLabel::new(
2420                    name,
2421                    string_match
2422                        .map(|string_match| string_match.positions.clone())
2423                        .unwrap_or_default(),
2424                )
2425                .color(color)
2426                .into_any_element(),
2427                icon.unwrap_or_else(empty_icon),
2428            )
2429        };
2430
2431        self.entry_element(
2432            PanelEntry::FoldedDirs(folded_dir.clone()),
2433            item_id,
2434            depth,
2435            icon,
2436            is_active,
2437            label_element,
2438            window,
2439            cx,
2440        )
2441    }
2442
2443    fn render_search_match(
2444        &mut self,
2445        multi_buffer_snapshot: Option<&MultiBufferSnapshot>,
2446        match_range: &Range<editor::Anchor>,
2447        render_data: &Arc<OnceLock<SearchData>>,
2448        kind: SearchKind,
2449        depth: usize,
2450        string_match: Option<&StringMatch>,
2451        window: &mut Window,
2452        cx: &mut Context<Self>,
2453    ) -> Option<Stateful<Div>> {
2454        let search_data = match render_data.get() {
2455            Some(search_data) => search_data,
2456            None => {
2457                if let ItemsDisplayMode::Search(search_state) = &mut self.mode
2458                    && let Some(multi_buffer_snapshot) = multi_buffer_snapshot
2459                {
2460                    search_state
2461                        .highlight_search_match_tx
2462                        .try_send(HighlightArguments {
2463                            multi_buffer_snapshot: multi_buffer_snapshot.clone(),
2464                            match_range: match_range.clone(),
2465                            search_data: Arc::clone(render_data),
2466                        })
2467                        .ok();
2468                }
2469                return None;
2470            }
2471        };
2472        let search_matches = string_match
2473            .iter()
2474            .flat_map(|string_match| string_match.ranges())
2475            .collect::<Vec<_>>();
2476        let match_ranges = if search_matches.is_empty() {
2477            &search_data.search_match_indices
2478        } else {
2479            &search_matches
2480        };
2481        let label_element = outline::render_item(
2482            &OutlineItem {
2483                depth,
2484                annotation_range: None,
2485                range: search_data.context_range.clone(),
2486                text: search_data.context_text.clone(),
2487                highlight_ranges: search_data
2488                    .highlights_data
2489                    .get()
2490                    .cloned()
2491                    .unwrap_or_default(),
2492                name_ranges: search_data.search_match_indices.clone(),
2493                body_range: Some(search_data.context_range.clone()),
2494            },
2495            match_ranges.iter().cloned(),
2496            cx,
2497        );
2498        let truncated_contents_label = || Label::new(TRUNCATED_CONTEXT_MARK);
2499        let entire_label = h_flex()
2500            .justify_center()
2501            .p_0()
2502            .when(search_data.truncated_left, |parent| {
2503                parent.child(truncated_contents_label())
2504            })
2505            .child(label_element)
2506            .when(search_data.truncated_right, |parent| {
2507                parent.child(truncated_contents_label())
2508            })
2509            .into_any_element();
2510
2511        let is_active = match self.selected_entry() {
2512            Some(PanelEntry::Search(SearchEntry {
2513                match_range: selected_match_range,
2514                ..
2515            })) => match_range == selected_match_range,
2516            _ => false,
2517        };
2518        Some(self.entry_element(
2519            PanelEntry::Search(SearchEntry {
2520                kind,
2521                match_range: match_range.clone(),
2522                render_data: render_data.clone(),
2523            }),
2524            ElementId::from(SharedString::from(format!("search-{match_range:?}"))),
2525            depth,
2526            empty_icon(),
2527            is_active,
2528            entire_label,
2529            window,
2530            cx,
2531        ))
2532    }
2533
2534    fn entry_element(
2535        &self,
2536        rendered_entry: PanelEntry,
2537        item_id: ElementId,
2538        depth: usize,
2539        icon_element: AnyElement,
2540        is_active: bool,
2541        label_element: gpui::AnyElement,
2542        window: &mut Window,
2543        cx: &mut Context<OutlinePanel>,
2544    ) -> Stateful<Div> {
2545        let settings = OutlinePanelSettings::get_global(cx);
2546        div()
2547            .text_ui(cx)
2548            .id(item_id.clone())
2549            .on_click({
2550                let clicked_entry = rendered_entry.clone();
2551                cx.listener(move |outline_panel, event: &gpui::ClickEvent, window, cx| {
2552                    if event.is_right_click() || event.first_focus() {
2553                        return;
2554                    }
2555
2556                    let change_focus = event.click_count() > 1;
2557                    outline_panel.toggle_expanded(&clicked_entry, window, cx);
2558
2559                    outline_panel.scroll_editor_to_entry(
2560                        &clicked_entry,
2561                        true,
2562                        change_focus,
2563                        window,
2564                        cx,
2565                    );
2566                })
2567            })
2568            .cursor_pointer()
2569            .child(
2570                ListItem::new(item_id)
2571                    .indent_level(depth)
2572                    .indent_step_size(px(settings.indent_size))
2573                    .toggle_state(is_active)
2574                    .child(
2575                        h_flex()
2576                            .child(h_flex().w(px(16.)).justify_center().child(icon_element))
2577                            .child(h_flex().h_6().child(label_element).ml_1()),
2578                    )
2579                    .on_secondary_mouse_down(cx.listener(
2580                        move |outline_panel, event: &MouseDownEvent, window, cx| {
2581                            // Stop propagation to prevent the catch-all context menu for the project
2582                            // panel from being deployed.
2583                            cx.stop_propagation();
2584                            outline_panel.deploy_context_menu(
2585                                event.position,
2586                                rendered_entry.clone(),
2587                                window,
2588                                cx,
2589                            )
2590                        },
2591                    )),
2592            )
2593            .border_1()
2594            .border_r_2()
2595            .rounded_none()
2596            .hover(|style| {
2597                if is_active {
2598                    style
2599                } else {
2600                    let hover_color = cx.theme().colors().ghost_element_hover;
2601                    style.bg(hover_color).border_color(hover_color)
2602                }
2603            })
2604            .when(
2605                is_active && self.focus_handle.contains_focused(window, cx),
2606                |div| div.border_color(Color::Selected.color(cx)),
2607            )
2608    }
2609
2610    fn entry_name(&self, worktree_id: &WorktreeId, entry: &Entry, cx: &App) -> String {
2611        match self.project.read(cx).worktree_for_id(*worktree_id, cx) {
2612            Some(worktree) => {
2613                let worktree = worktree.read(cx);
2614                match worktree.snapshot().root_entry() {
2615                    Some(root_entry) => {
2616                        if root_entry.id == entry.id {
2617                            file_name(worktree.abs_path().as_ref())
2618                        } else {
2619                            let path = worktree.absolutize(entry.path.as_ref());
2620                            file_name(&path)
2621                        }
2622                    }
2623                    None => {
2624                        let path = worktree.absolutize(entry.path.as_ref());
2625                        file_name(&path)
2626                    }
2627                }
2628            }
2629            None => file_name(entry.path.as_std_path()),
2630        }
2631    }
2632
2633    fn update_fs_entries(
2634        &mut self,
2635        active_editor: Entity<Editor>,
2636        debounce: Option<Duration>,
2637        window: &mut Window,
2638        cx: &mut Context<Self>,
2639    ) {
2640        if !self.active {
2641            return;
2642        }
2643
2644        let auto_fold_dirs = OutlinePanelSettings::get_global(cx).auto_fold_dirs;
2645        let active_multi_buffer = active_editor.read(cx).buffer().clone();
2646        let new_entries = self.new_entries_for_fs_update.clone();
2647        let repo_snapshots = self.project.update(cx, |project, cx| {
2648            project.git_store().read(cx).repo_snapshots(cx)
2649        });
2650        self.updating_fs_entries = true;
2651        self.fs_entries_update_task = cx.spawn_in(window, async move |outline_panel, cx| {
2652            if let Some(debounce) = debounce {
2653                cx.background_executor().timer(debounce).await;
2654            }
2655
2656            let mut new_collapsed_entries = HashSet::default();
2657            let mut new_unfolded_dirs = HashMap::default();
2658            let mut root_entries = HashSet::default();
2659            let mut new_excerpts = HashMap::<BufferId, HashMap<ExcerptId, Excerpt>>::default();
2660            let Ok(buffer_excerpts) = outline_panel.update(cx, |outline_panel, cx| {
2661                let git_store = outline_panel.project.read(cx).git_store().clone();
2662                new_collapsed_entries = outline_panel.collapsed_entries.clone();
2663                new_unfolded_dirs = outline_panel.unfolded_dirs.clone();
2664                let multi_buffer_snapshot = active_multi_buffer.read(cx).snapshot(cx);
2665
2666                multi_buffer_snapshot.excerpts().fold(
2667                    HashMap::default(),
2668                    |mut buffer_excerpts, (excerpt_id, buffer_snapshot, excerpt_range)| {
2669                        let buffer_id = buffer_snapshot.remote_id();
2670                        let file = File::from_dyn(buffer_snapshot.file());
2671                        let entry_id = file.and_then(|file| file.project_entry_id());
2672                        let worktree = file.map(|file| file.worktree.read(cx).snapshot());
2673                        let is_new = new_entries.contains(&excerpt_id)
2674                            || !outline_panel.excerpts.contains_key(&buffer_id);
2675                        let is_folded = active_editor.read(cx).is_buffer_folded(buffer_id, cx);
2676                        let status = git_store
2677                            .read(cx)
2678                            .repository_and_path_for_buffer_id(buffer_id, cx)
2679                            .and_then(|(repo, path)| {
2680                                Some(repo.read(cx).status_for_path(&path)?.status)
2681                            });
2682                        buffer_excerpts
2683                            .entry(buffer_id)
2684                            .or_insert_with(|| {
2685                                (is_new, is_folded, Vec::new(), entry_id, worktree, status)
2686                            })
2687                            .2
2688                            .push(excerpt_id);
2689
2690                        let outlines = match outline_panel
2691                            .excerpts
2692                            .get(&buffer_id)
2693                            .and_then(|excerpts| excerpts.get(&excerpt_id))
2694                        {
2695                            Some(old_excerpt) => match &old_excerpt.outlines {
2696                                ExcerptOutlines::Outlines(outlines) => {
2697                                    ExcerptOutlines::Outlines(outlines.clone())
2698                                }
2699                                ExcerptOutlines::Invalidated(_) => ExcerptOutlines::NotFetched,
2700                                ExcerptOutlines::NotFetched => ExcerptOutlines::NotFetched,
2701                            },
2702                            None => ExcerptOutlines::NotFetched,
2703                        };
2704                        new_excerpts.entry(buffer_id).or_default().insert(
2705                            excerpt_id,
2706                            Excerpt {
2707                                range: excerpt_range,
2708                                outlines,
2709                            },
2710                        );
2711                        buffer_excerpts
2712                    },
2713                )
2714            }) else {
2715                return;
2716            };
2717
2718            let Some((
2719                new_collapsed_entries,
2720                new_unfolded_dirs,
2721                new_fs_entries,
2722                new_depth_map,
2723                new_children_count,
2724            )) = cx
2725                .background_spawn(async move {
2726                    let mut processed_external_buffers = HashSet::default();
2727                    let mut new_worktree_entries =
2728                        BTreeMap::<WorktreeId, HashMap<ProjectEntryId, GitEntry>>::default();
2729                    let mut worktree_excerpts = HashMap::<
2730                        WorktreeId,
2731                        HashMap<ProjectEntryId, (BufferId, Vec<ExcerptId>)>,
2732                    >::default();
2733                    let mut external_excerpts = HashMap::default();
2734
2735                    for (buffer_id, (is_new, is_folded, excerpts, entry_id, worktree, status)) in
2736                        buffer_excerpts
2737                    {
2738                        if is_folded {
2739                            match &worktree {
2740                                Some(worktree) => {
2741                                    new_collapsed_entries
2742                                        .insert(CollapsedEntry::File(worktree.id(), buffer_id));
2743                                }
2744                                None => {
2745                                    new_collapsed_entries
2746                                        .insert(CollapsedEntry::ExternalFile(buffer_id));
2747                                }
2748                            }
2749                        } else if is_new {
2750                            match &worktree {
2751                                Some(worktree) => {
2752                                    new_collapsed_entries
2753                                        .remove(&CollapsedEntry::File(worktree.id(), buffer_id));
2754                                }
2755                                None => {
2756                                    new_collapsed_entries
2757                                        .remove(&CollapsedEntry::ExternalFile(buffer_id));
2758                                }
2759                            }
2760                        }
2761
2762                        if let Some(worktree) = worktree {
2763                            let worktree_id = worktree.id();
2764                            let unfolded_dirs = new_unfolded_dirs.entry(worktree_id).or_default();
2765
2766                            match entry_id.and_then(|id| worktree.entry_for_id(id)).cloned() {
2767                                Some(entry) => {
2768                                    let entry = GitEntry {
2769                                        git_summary: status
2770                                            .map(|status| status.summary())
2771                                            .unwrap_or_default(),
2772                                        entry,
2773                                    };
2774                                    let mut traversal = GitTraversal::new(
2775                                        &repo_snapshots,
2776                                        worktree.traverse_from_path(
2777                                            true,
2778                                            true,
2779                                            true,
2780                                            entry.path.as_ref(),
2781                                        ),
2782                                    );
2783
2784                                    let mut entries_to_add = HashMap::default();
2785                                    worktree_excerpts
2786                                        .entry(worktree_id)
2787                                        .or_default()
2788                                        .insert(entry.id, (buffer_id, excerpts));
2789                                    let mut current_entry = entry;
2790                                    loop {
2791                                        if current_entry.is_dir() {
2792                                            let is_root =
2793                                                worktree.root_entry().map(|entry| entry.id)
2794                                                    == Some(current_entry.id);
2795                                            if is_root {
2796                                                root_entries.insert(current_entry.id);
2797                                                if auto_fold_dirs {
2798                                                    unfolded_dirs.insert(current_entry.id);
2799                                                }
2800                                            }
2801                                            if is_new {
2802                                                new_collapsed_entries.remove(&CollapsedEntry::Dir(
2803                                                    worktree_id,
2804                                                    current_entry.id,
2805                                                ));
2806                                            }
2807                                        }
2808
2809                                        let new_entry_added = entries_to_add
2810                                            .insert(current_entry.id, current_entry)
2811                                            .is_none();
2812                                        if new_entry_added
2813                                            && traversal.back_to_parent()
2814                                            && let Some(parent_entry) = traversal.entry()
2815                                        {
2816                                            current_entry = parent_entry.to_owned();
2817                                            continue;
2818                                        }
2819                                        break;
2820                                    }
2821                                    new_worktree_entries
2822                                        .entry(worktree_id)
2823                                        .or_insert_with(HashMap::default)
2824                                        .extend(entries_to_add);
2825                                }
2826                                None => {
2827                                    if processed_external_buffers.insert(buffer_id) {
2828                                        external_excerpts
2829                                            .entry(buffer_id)
2830                                            .or_insert_with(Vec::new)
2831                                            .extend(excerpts);
2832                                    }
2833                                }
2834                            }
2835                        } else if processed_external_buffers.insert(buffer_id) {
2836                            external_excerpts
2837                                .entry(buffer_id)
2838                                .or_insert_with(Vec::new)
2839                                .extend(excerpts);
2840                        }
2841                    }
2842
2843                    let mut new_children_count =
2844                        HashMap::<WorktreeId, HashMap<Arc<RelPath>, FsChildren>>::default();
2845
2846                    let worktree_entries = new_worktree_entries
2847                        .into_iter()
2848                        .map(|(worktree_id, entries)| {
2849                            let mut entries = entries.into_values().collect::<Vec<_>>();
2850                            entries.sort_by(|a, b| a.path.as_ref().cmp(b.path.as_ref()));
2851                            (worktree_id, entries)
2852                        })
2853                        .flat_map(|(worktree_id, entries)| {
2854                            {
2855                                entries
2856                                    .into_iter()
2857                                    .filter_map(|entry| {
2858                                        if auto_fold_dirs && let Some(parent) = entry.path.parent()
2859                                        {
2860                                            let children = new_children_count
2861                                                .entry(worktree_id)
2862                                                .or_default()
2863                                                .entry(Arc::from(parent))
2864                                                .or_default();
2865                                            if entry.is_dir() {
2866                                                children.dirs += 1;
2867                                            } else {
2868                                                children.files += 1;
2869                                            }
2870                                        }
2871
2872                                        if entry.is_dir() {
2873                                            Some(FsEntry::Directory(FsEntryDirectory {
2874                                                worktree_id,
2875                                                entry,
2876                                            }))
2877                                        } else {
2878                                            let (buffer_id, excerpts) = worktree_excerpts
2879                                                .get_mut(&worktree_id)
2880                                                .and_then(|worktree_excerpts| {
2881                                                    worktree_excerpts.remove(&entry.id)
2882                                                })?;
2883                                            Some(FsEntry::File(FsEntryFile {
2884                                                worktree_id,
2885                                                buffer_id,
2886                                                entry,
2887                                                excerpts,
2888                                            }))
2889                                        }
2890                                    })
2891                                    .collect::<Vec<_>>()
2892                            }
2893                        })
2894                        .collect::<Vec<_>>();
2895
2896                    let mut visited_dirs = Vec::new();
2897                    let mut new_depth_map = HashMap::default();
2898                    let new_visible_entries = external_excerpts
2899                        .into_iter()
2900                        .sorted_by_key(|(id, _)| *id)
2901                        .map(|(buffer_id, excerpts)| {
2902                            FsEntry::ExternalFile(FsEntryExternalFile {
2903                                buffer_id,
2904                                excerpts,
2905                            })
2906                        })
2907                        .chain(worktree_entries)
2908                        .filter(|visible_item| {
2909                            match visible_item {
2910                                FsEntry::Directory(directory) => {
2911                                    let parent_id = back_to_common_visited_parent(
2912                                        &mut visited_dirs,
2913                                        &directory.worktree_id,
2914                                        &directory.entry,
2915                                    );
2916
2917                                    let mut depth = 0;
2918                                    if !root_entries.contains(&directory.entry.id) {
2919                                        if auto_fold_dirs {
2920                                            let children = new_children_count
2921                                                .get(&directory.worktree_id)
2922                                                .and_then(|children_count| {
2923                                                    children_count.get(&directory.entry.path)
2924                                                })
2925                                                .copied()
2926                                                .unwrap_or_default();
2927
2928                                            if !children.may_be_fold_part()
2929                                                || (children.dirs == 0
2930                                                    && visited_dirs
2931                                                        .last()
2932                                                        .map(|(parent_dir_id, _)| {
2933                                                            new_unfolded_dirs
2934                                                                .get(&directory.worktree_id)
2935                                                                .is_none_or(|unfolded_dirs| {
2936                                                                    unfolded_dirs
2937                                                                        .contains(parent_dir_id)
2938                                                                })
2939                                                        })
2940                                                        .unwrap_or(true))
2941                                            {
2942                                                new_unfolded_dirs
2943                                                    .entry(directory.worktree_id)
2944                                                    .or_default()
2945                                                    .insert(directory.entry.id);
2946                                            }
2947                                        }
2948
2949                                        depth = parent_id
2950                                            .and_then(|(worktree_id, id)| {
2951                                                new_depth_map.get(&(worktree_id, id)).copied()
2952                                            })
2953                                            .unwrap_or(0)
2954                                            + 1;
2955                                    };
2956                                    visited_dirs
2957                                        .push((directory.entry.id, directory.entry.path.clone()));
2958                                    new_depth_map
2959                                        .insert((directory.worktree_id, directory.entry.id), depth);
2960                                }
2961                                FsEntry::File(FsEntryFile {
2962                                    worktree_id,
2963                                    entry: file_entry,
2964                                    ..
2965                                }) => {
2966                                    let parent_id = back_to_common_visited_parent(
2967                                        &mut visited_dirs,
2968                                        worktree_id,
2969                                        file_entry,
2970                                    );
2971                                    let depth = if root_entries.contains(&file_entry.id) {
2972                                        0
2973                                    } else {
2974                                        parent_id
2975                                            .and_then(|(worktree_id, id)| {
2976                                                new_depth_map.get(&(worktree_id, id)).copied()
2977                                            })
2978                                            .unwrap_or(0)
2979                                            + 1
2980                                    };
2981                                    new_depth_map.insert((*worktree_id, file_entry.id), depth);
2982                                }
2983                                FsEntry::ExternalFile(..) => {
2984                                    visited_dirs.clear();
2985                                }
2986                            }
2987
2988                            true
2989                        })
2990                        .collect::<Vec<_>>();
2991
2992                    anyhow::Ok((
2993                        new_collapsed_entries,
2994                        new_unfolded_dirs,
2995                        new_visible_entries,
2996                        new_depth_map,
2997                        new_children_count,
2998                    ))
2999                })
3000                .await
3001                .log_err()
3002            else {
3003                return;
3004            };
3005
3006            outline_panel
3007                .update_in(cx, |outline_panel, window, cx| {
3008                    outline_panel.updating_fs_entries = false;
3009                    outline_panel.new_entries_for_fs_update.clear();
3010                    outline_panel.excerpts = new_excerpts;
3011                    outline_panel.collapsed_entries = new_collapsed_entries;
3012                    outline_panel.unfolded_dirs = new_unfolded_dirs;
3013                    outline_panel.fs_entries = new_fs_entries;
3014                    outline_panel.fs_entries_depth = new_depth_map;
3015                    outline_panel.fs_children_count = new_children_count;
3016                    outline_panel.update_non_fs_items(window, cx);
3017
3018                    // Only update cached entries if we don't have outlines to fetch
3019                    // If we do have outlines to fetch, let fetch_outdated_outlines handle the update
3020                    if outline_panel.excerpt_fetch_ranges(cx).is_empty() {
3021                        outline_panel.update_cached_entries(debounce, window, cx);
3022                    }
3023
3024                    cx.notify();
3025                })
3026                .ok();
3027        });
3028    }
3029
3030    fn replace_active_editor(
3031        &mut self,
3032        new_active_item: Box<dyn ItemHandle>,
3033        new_active_editor: Entity<Editor>,
3034        window: &mut Window,
3035        cx: &mut Context<Self>,
3036    ) {
3037        self.clear_previous(window, cx);
3038
3039        let default_expansion_depth =
3040            OutlinePanelSettings::get_global(cx).expand_outlines_with_depth;
3041        // We'll apply the expansion depth after outlines are loaded
3042        self.pending_default_expansion_depth = Some(default_expansion_depth);
3043
3044        let buffer_search_subscription = cx.subscribe_in(
3045            &new_active_editor,
3046            window,
3047            |outline_panel: &mut Self,
3048             _,
3049             e: &SearchEvent,
3050             window: &mut Window,
3051             cx: &mut Context<Self>| {
3052                if matches!(e, SearchEvent::MatchesInvalidated) {
3053                    let update_cached_items = outline_panel.update_search_matches(window, cx);
3054                    if update_cached_items {
3055                        outline_panel.selected_entry.invalidate();
3056                        outline_panel.update_cached_entries(Some(UPDATE_DEBOUNCE), window, cx);
3057                    }
3058                };
3059                outline_panel.autoscroll(cx);
3060            },
3061        );
3062        self.active_item = Some(ActiveItem {
3063            _buffer_search_subscription: buffer_search_subscription,
3064            _editor_subscription: subscribe_for_editor_events(&new_active_editor, window, cx),
3065            item_handle: new_active_item.downgrade_item(),
3066            active_editor: new_active_editor.downgrade(),
3067        });
3068        self.new_entries_for_fs_update
3069            .extend(new_active_editor.read(cx).buffer().read(cx).excerpt_ids());
3070        self.selected_entry.invalidate();
3071        self.update_fs_entries(new_active_editor, None, window, cx);
3072    }
3073
3074    fn clear_previous(&mut self, window: &mut Window, cx: &mut App) {
3075        self.fs_entries_update_task = Task::ready(());
3076        self.outline_fetch_tasks.clear();
3077        self.cached_entries_update_task = Task::ready(());
3078        self.reveal_selection_task = Task::ready(Ok(()));
3079        self.filter_editor
3080            .update(cx, |editor, cx| editor.clear(window, cx));
3081        self.collapsed_entries.clear();
3082        self.unfolded_dirs.clear();
3083        self.active_item = None;
3084        self.fs_entries.clear();
3085        self.fs_entries_depth.clear();
3086        self.fs_children_count.clear();
3087        self.excerpts.clear();
3088        self.cached_entries = Vec::new();
3089        self.selected_entry = SelectedEntry::None;
3090        self.pinned = false;
3091        self.mode = ItemsDisplayMode::Outline;
3092        self.pending_default_expansion_depth = None;
3093    }
3094
3095    fn location_for_editor_selection(
3096        &self,
3097        editor: &Entity<Editor>,
3098        window: &mut Window,
3099        cx: &mut Context<Self>,
3100    ) -> Option<PanelEntry> {
3101        let selection = editor.update(cx, |editor, cx| {
3102            editor
3103                .selections
3104                .newest::<language::Point>(&editor.display_snapshot(cx))
3105                .head()
3106        });
3107        let editor_snapshot = editor.update(cx, |editor, cx| editor.snapshot(window, cx));
3108        let multi_buffer = editor.read(cx).buffer();
3109        let multi_buffer_snapshot = multi_buffer.read(cx).snapshot(cx);
3110        let (excerpt_id, buffer, _) = editor
3111            .read(cx)
3112            .buffer()
3113            .read(cx)
3114            .excerpt_containing(selection, cx)?;
3115        let buffer_id = buffer.read(cx).remote_id();
3116
3117        if editor.read(cx).is_buffer_folded(buffer_id, cx) {
3118            return self
3119                .fs_entries
3120                .iter()
3121                .find(|fs_entry| match fs_entry {
3122                    FsEntry::Directory(..) => false,
3123                    FsEntry::File(FsEntryFile {
3124                        buffer_id: other_buffer_id,
3125                        ..
3126                    })
3127                    | FsEntry::ExternalFile(FsEntryExternalFile {
3128                        buffer_id: other_buffer_id,
3129                        ..
3130                    }) => buffer_id == *other_buffer_id,
3131                })
3132                .cloned()
3133                .map(PanelEntry::Fs);
3134        }
3135
3136        let selection_display_point = selection.to_display_point(&editor_snapshot);
3137
3138        match &self.mode {
3139            ItemsDisplayMode::Search(search_state) => search_state
3140                .matches
3141                .iter()
3142                .rev()
3143                .min_by_key(|&(match_range, _)| {
3144                    let match_display_range =
3145                        match_range.clone().to_display_points(&editor_snapshot);
3146                    let start_distance = if selection_display_point < match_display_range.start {
3147                        match_display_range.start - selection_display_point
3148                    } else {
3149                        selection_display_point - match_display_range.start
3150                    };
3151                    let end_distance = if selection_display_point < match_display_range.end {
3152                        match_display_range.end - selection_display_point
3153                    } else {
3154                        selection_display_point - match_display_range.end
3155                    };
3156                    start_distance + end_distance
3157                })
3158                .and_then(|(closest_range, _)| {
3159                    self.cached_entries.iter().find_map(|cached_entry| {
3160                        if let PanelEntry::Search(SearchEntry { match_range, .. }) =
3161                            &cached_entry.entry
3162                        {
3163                            if match_range == closest_range {
3164                                Some(cached_entry.entry.clone())
3165                            } else {
3166                                None
3167                            }
3168                        } else {
3169                            None
3170                        }
3171                    })
3172                }),
3173            ItemsDisplayMode::Outline => self.outline_location(
3174                buffer_id,
3175                excerpt_id,
3176                multi_buffer_snapshot,
3177                editor_snapshot,
3178                selection_display_point,
3179            ),
3180        }
3181    }
3182
3183    fn outline_location(
3184        &self,
3185        buffer_id: BufferId,
3186        excerpt_id: ExcerptId,
3187        multi_buffer_snapshot: editor::MultiBufferSnapshot,
3188        editor_snapshot: editor::EditorSnapshot,
3189        selection_display_point: DisplayPoint,
3190    ) -> Option<PanelEntry> {
3191        let excerpt_outlines = self
3192            .excerpts
3193            .get(&buffer_id)
3194            .and_then(|excerpts| excerpts.get(&excerpt_id))
3195            .into_iter()
3196            .flat_map(|excerpt| excerpt.iter_outlines())
3197            .flat_map(|outline| {
3198                let range = multi_buffer_snapshot
3199                    .anchor_range_in_excerpt(excerpt_id, outline.range.clone())?;
3200                Some((
3201                    range.start.to_display_point(&editor_snapshot)
3202                        ..range.end.to_display_point(&editor_snapshot),
3203                    outline,
3204                ))
3205            })
3206            .collect::<Vec<_>>();
3207
3208        let mut matching_outline_indices = Vec::new();
3209        let mut children = HashMap::default();
3210        let mut parents_stack = Vec::<(&Range<DisplayPoint>, &&Outline, usize)>::new();
3211
3212        for (i, (outline_range, outline)) in excerpt_outlines.iter().enumerate() {
3213            if outline_range
3214                .to_inclusive()
3215                .contains(&selection_display_point)
3216            {
3217                matching_outline_indices.push(i);
3218            } else if (outline_range.start.row()..outline_range.end.row())
3219                .to_inclusive()
3220                .contains(&selection_display_point.row())
3221            {
3222                matching_outline_indices.push(i);
3223            }
3224
3225            while let Some((parent_range, parent_outline, _)) = parents_stack.last() {
3226                if parent_outline.depth >= outline.depth
3227                    || !parent_range.contains(&outline_range.start)
3228                {
3229                    parents_stack.pop();
3230                } else {
3231                    break;
3232                }
3233            }
3234            if let Some((_, _, parent_index)) = parents_stack.last_mut() {
3235                children
3236                    .entry(*parent_index)
3237                    .or_insert_with(Vec::new)
3238                    .push(i);
3239            }
3240            parents_stack.push((outline_range, outline, i));
3241        }
3242
3243        let outline_item = matching_outline_indices
3244            .into_iter()
3245            .flat_map(|i| Some((i, excerpt_outlines.get(i)?)))
3246            .filter(|(i, _)| {
3247                children
3248                    .get(i)
3249                    .map(|children| {
3250                        children.iter().all(|child_index| {
3251                            excerpt_outlines
3252                                .get(*child_index)
3253                                .map(|(child_range, _)| child_range.start > selection_display_point)
3254                                .unwrap_or(false)
3255                        })
3256                    })
3257                    .unwrap_or(true)
3258            })
3259            .min_by_key(|(_, (outline_range, outline))| {
3260                let distance_from_start = if outline_range.start > selection_display_point {
3261                    outline_range.start - selection_display_point
3262                } else {
3263                    selection_display_point - outline_range.start
3264                };
3265                let distance_from_end = if outline_range.end > selection_display_point {
3266                    outline_range.end - selection_display_point
3267                } else {
3268                    selection_display_point - outline_range.end
3269                };
3270
3271                (
3272                    cmp::Reverse(outline.depth),
3273                    distance_from_start + distance_from_end,
3274                )
3275            })
3276            .map(|(_, (_, outline))| *outline)
3277            .cloned();
3278
3279        let closest_container = match outline_item {
3280            Some(outline) => PanelEntry::Outline(OutlineEntry::Outline(OutlineEntryOutline {
3281                buffer_id,
3282                excerpt_id,
3283                outline,
3284            })),
3285            None => {
3286                self.cached_entries.iter().rev().find_map(|cached_entry| {
3287                    match &cached_entry.entry {
3288                        PanelEntry::Outline(OutlineEntry::Excerpt(excerpt)) => {
3289                            if excerpt.buffer_id == buffer_id && excerpt.id == excerpt_id {
3290                                Some(cached_entry.entry.clone())
3291                            } else {
3292                                None
3293                            }
3294                        }
3295                        PanelEntry::Fs(
3296                            FsEntry::ExternalFile(FsEntryExternalFile {
3297                                buffer_id: file_buffer_id,
3298                                excerpts: file_excerpts,
3299                            })
3300                            | FsEntry::File(FsEntryFile {
3301                                buffer_id: file_buffer_id,
3302                                excerpts: file_excerpts,
3303                                ..
3304                            }),
3305                        ) => {
3306                            if file_buffer_id == &buffer_id && file_excerpts.contains(&excerpt_id) {
3307                                Some(cached_entry.entry.clone())
3308                            } else {
3309                                None
3310                            }
3311                        }
3312                        _ => None,
3313                    }
3314                })?
3315            }
3316        };
3317        Some(closest_container)
3318    }
3319
3320    fn fetch_outdated_outlines(&mut self, window: &mut Window, cx: &mut Context<Self>) {
3321        let excerpt_fetch_ranges = self.excerpt_fetch_ranges(cx);
3322        if excerpt_fetch_ranges.is_empty() {
3323            return;
3324        }
3325
3326        let syntax_theme = cx.theme().syntax().clone();
3327        let first_update = Arc::new(AtomicBool::new(true));
3328        for (buffer_id, (buffer_snapshot, excerpt_ranges)) in excerpt_fetch_ranges {
3329            for (excerpt_id, excerpt_range) in excerpt_ranges {
3330                let syntax_theme = syntax_theme.clone();
3331                let buffer_snapshot = buffer_snapshot.clone();
3332                let first_update = first_update.clone();
3333                self.outline_fetch_tasks.insert(
3334                    (buffer_id, excerpt_id),
3335                    cx.spawn_in(window, async move |outline_panel, cx| {
3336                        let buffer_language = buffer_snapshot.language().cloned();
3337                        let fetched_outlines = cx
3338                            .background_spawn(async move {
3339                                let mut outlines = buffer_snapshot.outline_items_containing(
3340                                    excerpt_range.context,
3341                                    false,
3342                                    Some(&syntax_theme),
3343                                );
3344                                outlines.retain(|outline| {
3345                                    buffer_language.is_none()
3346                                        || buffer_language.as_ref()
3347                                            == buffer_snapshot.language_at(outline.range.start)
3348                                });
3349
3350                                let outlines_with_children = outlines
3351                                    .windows(2)
3352                                    .filter_map(|window| {
3353                                        let current = &window[0];
3354                                        let next = &window[1];
3355                                        if next.depth > current.depth {
3356                                            Some((current.range.clone(), current.depth))
3357                                        } else {
3358                                            None
3359                                        }
3360                                    })
3361                                    .collect::<HashSet<_>>();
3362
3363                                (outlines, outlines_with_children)
3364                            })
3365                            .await;
3366
3367                        let (fetched_outlines, outlines_with_children) = fetched_outlines;
3368
3369                        outline_panel
3370                            .update_in(cx, |outline_panel, window, cx| {
3371                                let pending_default_depth =
3372                                    outline_panel.pending_default_expansion_depth.take();
3373
3374                                let debounce =
3375                                    if first_update.fetch_and(false, atomic::Ordering::AcqRel) {
3376                                        None
3377                                    } else {
3378                                        Some(UPDATE_DEBOUNCE)
3379                                    };
3380
3381                                if let Some(excerpt) = outline_panel
3382                                    .excerpts
3383                                    .entry(buffer_id)
3384                                    .or_default()
3385                                    .get_mut(&excerpt_id)
3386                                {
3387                                    excerpt.outlines = ExcerptOutlines::Outlines(fetched_outlines);
3388
3389                                    if let Some(default_depth) = pending_default_depth
3390                                        && let ExcerptOutlines::Outlines(outlines) =
3391                                            &excerpt.outlines
3392                                    {
3393                                        outlines
3394                                            .iter()
3395                                            .filter(|outline| {
3396                                                (default_depth == 0
3397                                                    || outline.depth >= default_depth)
3398                                                    && outlines_with_children.contains(&(
3399                                                        outline.range.clone(),
3400                                                        outline.depth,
3401                                                    ))
3402                                            })
3403                                            .for_each(|outline| {
3404                                                outline_panel.collapsed_entries.insert(
3405                                                    CollapsedEntry::Outline(
3406                                                        buffer_id,
3407                                                        excerpt_id,
3408                                                        outline.range.clone(),
3409                                                    ),
3410                                                );
3411                                            });
3412                                    }
3413
3414                                    // Even if no outlines to check, we still need to update cached entries
3415                                    // to show the outline entries that were just fetched
3416                                    outline_panel.update_cached_entries(debounce, window, cx);
3417                                }
3418                            })
3419                            .ok();
3420                    }),
3421                );
3422            }
3423        }
3424    }
3425
3426    fn is_singleton_active(&self, cx: &App) -> bool {
3427        self.active_editor()
3428            .is_some_and(|active_editor| active_editor.read(cx).buffer().read(cx).is_singleton())
3429    }
3430
3431    fn invalidate_outlines(&mut self, ids: &[ExcerptId]) {
3432        self.outline_fetch_tasks.clear();
3433        let mut ids = ids.iter().collect::<HashSet<_>>();
3434        for excerpts in self.excerpts.values_mut() {
3435            ids.retain(|id| {
3436                if let Some(excerpt) = excerpts.get_mut(id) {
3437                    excerpt.invalidate_outlines();
3438                    false
3439                } else {
3440                    true
3441                }
3442            });
3443            if ids.is_empty() {
3444                break;
3445            }
3446        }
3447    }
3448
3449    fn excerpt_fetch_ranges(
3450        &self,
3451        cx: &App,
3452    ) -> HashMap<
3453        BufferId,
3454        (
3455            BufferSnapshot,
3456            HashMap<ExcerptId, ExcerptRange<language::Anchor>>,
3457        ),
3458    > {
3459        self.fs_entries
3460            .iter()
3461            .fold(HashMap::default(), |mut excerpts_to_fetch, fs_entry| {
3462                match fs_entry {
3463                    FsEntry::File(FsEntryFile {
3464                        buffer_id,
3465                        excerpts: file_excerpts,
3466                        ..
3467                    })
3468                    | FsEntry::ExternalFile(FsEntryExternalFile {
3469                        buffer_id,
3470                        excerpts: file_excerpts,
3471                    }) => {
3472                        let excerpts = self.excerpts.get(buffer_id);
3473                        for &file_excerpt in file_excerpts {
3474                            if let Some(excerpt) = excerpts
3475                                .and_then(|excerpts| excerpts.get(&file_excerpt))
3476                                .filter(|excerpt| excerpt.should_fetch_outlines())
3477                            {
3478                                match excerpts_to_fetch.entry(*buffer_id) {
3479                                    hash_map::Entry::Occupied(mut o) => {
3480                                        o.get_mut().1.insert(file_excerpt, excerpt.range.clone());
3481                                    }
3482                                    hash_map::Entry::Vacant(v) => {
3483                                        if let Some(buffer_snapshot) =
3484                                            self.buffer_snapshot_for_id(*buffer_id, cx)
3485                                        {
3486                                            v.insert((buffer_snapshot, HashMap::default()))
3487                                                .1
3488                                                .insert(file_excerpt, excerpt.range.clone());
3489                                        }
3490                                    }
3491                                }
3492                            }
3493                        }
3494                    }
3495                    FsEntry::Directory(..) => {}
3496                }
3497                excerpts_to_fetch
3498            })
3499    }
3500
3501    fn buffer_snapshot_for_id(&self, buffer_id: BufferId, cx: &App) -> Option<BufferSnapshot> {
3502        let editor = self.active_editor()?;
3503        Some(
3504            editor
3505                .read(cx)
3506                .buffer()
3507                .read(cx)
3508                .buffer(buffer_id)?
3509                .read(cx)
3510                .snapshot(),
3511        )
3512    }
3513
3514    fn abs_path(&self, entry: &PanelEntry, cx: &App) -> Option<PathBuf> {
3515        match entry {
3516            PanelEntry::Fs(
3517                FsEntry::File(FsEntryFile { buffer_id, .. })
3518                | FsEntry::ExternalFile(FsEntryExternalFile { buffer_id, .. }),
3519            ) => self
3520                .buffer_snapshot_for_id(*buffer_id, cx)
3521                .and_then(|buffer_snapshot| {
3522                    let file = File::from_dyn(buffer_snapshot.file())?;
3523                    Some(file.worktree.read(cx).absolutize(&file.path))
3524                }),
3525            PanelEntry::Fs(FsEntry::Directory(FsEntryDirectory {
3526                worktree_id, entry, ..
3527            })) => Some(
3528                self.project
3529                    .read(cx)
3530                    .worktree_for_id(*worktree_id, cx)?
3531                    .read(cx)
3532                    .absolutize(&entry.path),
3533            ),
3534            PanelEntry::FoldedDirs(FoldedDirsEntry {
3535                worktree_id,
3536                entries: dirs,
3537                ..
3538            }) => dirs.last().and_then(|entry| {
3539                self.project
3540                    .read(cx)
3541                    .worktree_for_id(*worktree_id, cx)
3542                    .map(|worktree| worktree.read(cx).absolutize(&entry.path))
3543            }),
3544            PanelEntry::Search(_) | PanelEntry::Outline(..) => None,
3545        }
3546    }
3547
3548    fn relative_path(&self, entry: &FsEntry, cx: &App) -> Option<Arc<RelPath>> {
3549        match entry {
3550            FsEntry::ExternalFile(FsEntryExternalFile { buffer_id, .. }) => {
3551                let buffer_snapshot = self.buffer_snapshot_for_id(*buffer_id, cx)?;
3552                Some(buffer_snapshot.file()?.path().clone())
3553            }
3554            FsEntry::Directory(FsEntryDirectory { entry, .. }) => Some(entry.path.clone()),
3555            FsEntry::File(FsEntryFile { entry, .. }) => Some(entry.path.clone()),
3556        }
3557    }
3558
3559    fn update_cached_entries(
3560        &mut self,
3561        debounce: Option<Duration>,
3562        window: &mut Window,
3563        cx: &mut Context<OutlinePanel>,
3564    ) {
3565        if !self.active {
3566            return;
3567        }
3568
3569        let is_singleton = self.is_singleton_active(cx);
3570        let query = self.query(cx);
3571        self.updating_cached_entries = true;
3572        self.cached_entries_update_task = cx.spawn_in(window, async move |outline_panel, cx| {
3573            if let Some(debounce) = debounce {
3574                cx.background_executor().timer(debounce).await;
3575            }
3576            let Some(new_cached_entries) = outline_panel
3577                .update_in(cx, |outline_panel, window, cx| {
3578                    outline_panel.generate_cached_entries(is_singleton, query, window, cx)
3579                })
3580                .ok()
3581            else {
3582                return;
3583            };
3584            let (new_cached_entries, max_width_item_index) = new_cached_entries.await;
3585            outline_panel
3586                .update_in(cx, |outline_panel, window, cx| {
3587                    outline_panel.cached_entries = new_cached_entries;
3588                    outline_panel.max_width_item_index = max_width_item_index;
3589                    if (outline_panel.selected_entry.is_invalidated()
3590                        || matches!(outline_panel.selected_entry, SelectedEntry::None))
3591                        && let Some(new_selected_entry) =
3592                            outline_panel.active_editor().and_then(|active_editor| {
3593                                outline_panel.location_for_editor_selection(
3594                                    &active_editor,
3595                                    window,
3596                                    cx,
3597                                )
3598                            })
3599                    {
3600                        outline_panel.select_entry(new_selected_entry, false, window, cx);
3601                    }
3602
3603                    outline_panel.autoscroll(cx);
3604                    outline_panel.updating_cached_entries = false;
3605                    cx.notify();
3606                })
3607                .ok();
3608        });
3609    }
3610
3611    fn generate_cached_entries(
3612        &self,
3613        is_singleton: bool,
3614        query: Option<String>,
3615        window: &mut Window,
3616        cx: &mut Context<Self>,
3617    ) -> Task<(Vec<CachedEntry>, Option<usize>)> {
3618        let project = self.project.clone();
3619        let Some(active_editor) = self.active_editor() else {
3620            return Task::ready((Vec::new(), None));
3621        };
3622        cx.spawn_in(window, async move |outline_panel, cx| {
3623            let mut generation_state = GenerationState::default();
3624
3625            let Ok(()) = outline_panel.update(cx, |outline_panel, cx| {
3626                let auto_fold_dirs = OutlinePanelSettings::get_global(cx).auto_fold_dirs;
3627                let mut folded_dirs_entry = None::<(usize, FoldedDirsEntry)>;
3628                let track_matches = query.is_some();
3629
3630                #[derive(Debug)]
3631                struct ParentStats {
3632                    path: Arc<RelPath>,
3633                    folded: bool,
3634                    expanded: bool,
3635                    depth: usize,
3636                }
3637                let mut parent_dirs = Vec::<ParentStats>::new();
3638                for entry in outline_panel.fs_entries.clone() {
3639                    let is_expanded = outline_panel.is_expanded(&entry);
3640                    let (depth, should_add) = match &entry {
3641                        FsEntry::Directory(directory_entry) => {
3642                            let mut should_add = true;
3643                            let is_root = project
3644                                .read(cx)
3645                                .worktree_for_id(directory_entry.worktree_id, cx)
3646                                .is_some_and(|worktree| {
3647                                    worktree.read(cx).root_entry() == Some(&directory_entry.entry)
3648                                });
3649                            let folded = auto_fold_dirs
3650                                && !is_root
3651                                && outline_panel
3652                                    .unfolded_dirs
3653                                    .get(&directory_entry.worktree_id)
3654                                    .is_none_or(|unfolded_dirs| {
3655                                        !unfolded_dirs.contains(&directory_entry.entry.id)
3656                                    });
3657                            let fs_depth = outline_panel
3658                                .fs_entries_depth
3659                                .get(&(directory_entry.worktree_id, directory_entry.entry.id))
3660                                .copied()
3661                                .unwrap_or(0);
3662                            while let Some(parent) = parent_dirs.last() {
3663                                if !is_root && directory_entry.entry.path.starts_with(&parent.path)
3664                                {
3665                                    break;
3666                                }
3667                                parent_dirs.pop();
3668                            }
3669                            let auto_fold = match parent_dirs.last() {
3670                                Some(parent) => {
3671                                    parent.folded
3672                                        && Some(parent.path.as_ref())
3673                                            == directory_entry.entry.path.parent()
3674                                        && outline_panel
3675                                            .fs_children_count
3676                                            .get(&directory_entry.worktree_id)
3677                                            .and_then(|entries| {
3678                                                entries.get(&directory_entry.entry.path)
3679                                            })
3680                                            .copied()
3681                                            .unwrap_or_default()
3682                                            .may_be_fold_part()
3683                                }
3684                                None => false,
3685                            };
3686                            let folded = folded || auto_fold;
3687                            let (depth, parent_expanded, parent_folded) = match parent_dirs.last() {
3688                                Some(parent) => {
3689                                    let parent_folded = parent.folded;
3690                                    let parent_expanded = parent.expanded;
3691                                    let new_depth = if parent_folded {
3692                                        parent.depth
3693                                    } else {
3694                                        parent.depth + 1
3695                                    };
3696                                    parent_dirs.push(ParentStats {
3697                                        path: directory_entry.entry.path.clone(),
3698                                        folded,
3699                                        expanded: parent_expanded && is_expanded,
3700                                        depth: new_depth,
3701                                    });
3702                                    (new_depth, parent_expanded, parent_folded)
3703                                }
3704                                None => {
3705                                    parent_dirs.push(ParentStats {
3706                                        path: directory_entry.entry.path.clone(),
3707                                        folded,
3708                                        expanded: is_expanded,
3709                                        depth: fs_depth,
3710                                    });
3711                                    (fs_depth, true, false)
3712                                }
3713                            };
3714
3715                            if let Some((folded_depth, mut folded_dirs)) = folded_dirs_entry.take()
3716                            {
3717                                if folded
3718                                    && directory_entry.worktree_id == folded_dirs.worktree_id
3719                                    && directory_entry.entry.path.parent()
3720                                        == folded_dirs
3721                                            .entries
3722                                            .last()
3723                                            .map(|entry| entry.path.as_ref())
3724                                {
3725                                    folded_dirs.entries.push(directory_entry.entry.clone());
3726                                    folded_dirs_entry = Some((folded_depth, folded_dirs))
3727                                } else {
3728                                    if !is_singleton {
3729                                        let start_of_collapsed_dir_sequence = !parent_expanded
3730                                            && parent_dirs
3731                                                .iter()
3732                                                .rev()
3733                                                .nth(folded_dirs.entries.len() + 1)
3734                                                .is_none_or(|parent| parent.expanded);
3735                                        if start_of_collapsed_dir_sequence
3736                                            || parent_expanded
3737                                            || query.is_some()
3738                                        {
3739                                            if parent_folded {
3740                                                folded_dirs
3741                                                    .entries
3742                                                    .push(directory_entry.entry.clone());
3743                                                should_add = false;
3744                                            }
3745                                            let new_folded_dirs =
3746                                                PanelEntry::FoldedDirs(folded_dirs.clone());
3747                                            outline_panel.push_entry(
3748                                                &mut generation_state,
3749                                                track_matches,
3750                                                new_folded_dirs,
3751                                                folded_depth,
3752                                                cx,
3753                                            );
3754                                        }
3755                                    }
3756
3757                                    folded_dirs_entry = if parent_folded {
3758                                        None
3759                                    } else {
3760                                        Some((
3761                                            depth,
3762                                            FoldedDirsEntry {
3763                                                worktree_id: directory_entry.worktree_id,
3764                                                entries: vec![directory_entry.entry.clone()],
3765                                            },
3766                                        ))
3767                                    };
3768                                }
3769                            } else if folded {
3770                                folded_dirs_entry = Some((
3771                                    depth,
3772                                    FoldedDirsEntry {
3773                                        worktree_id: directory_entry.worktree_id,
3774                                        entries: vec![directory_entry.entry.clone()],
3775                                    },
3776                                ));
3777                            }
3778
3779                            let should_add =
3780                                should_add && parent_expanded && folded_dirs_entry.is_none();
3781                            (depth, should_add)
3782                        }
3783                        FsEntry::ExternalFile(..) => {
3784                            if let Some((folded_depth, folded_dir)) = folded_dirs_entry.take() {
3785                                let parent_expanded = parent_dirs
3786                                    .iter()
3787                                    .rev()
3788                                    .find(|parent| {
3789                                        folded_dir
3790                                            .entries
3791                                            .iter()
3792                                            .all(|entry| entry.path != parent.path)
3793                                    })
3794                                    .is_none_or(|parent| parent.expanded);
3795                                if !is_singleton && (parent_expanded || query.is_some()) {
3796                                    outline_panel.push_entry(
3797                                        &mut generation_state,
3798                                        track_matches,
3799                                        PanelEntry::FoldedDirs(folded_dir),
3800                                        folded_depth,
3801                                        cx,
3802                                    );
3803                                }
3804                            }
3805                            parent_dirs.clear();
3806                            (0, true)
3807                        }
3808                        FsEntry::File(file) => {
3809                            if let Some((folded_depth, folded_dirs)) = folded_dirs_entry.take() {
3810                                let parent_expanded = parent_dirs
3811                                    .iter()
3812                                    .rev()
3813                                    .find(|parent| {
3814                                        folded_dirs
3815                                            .entries
3816                                            .iter()
3817                                            .all(|entry| entry.path != parent.path)
3818                                    })
3819                                    .is_none_or(|parent| parent.expanded);
3820                                if !is_singleton && (parent_expanded || query.is_some()) {
3821                                    outline_panel.push_entry(
3822                                        &mut generation_state,
3823                                        track_matches,
3824                                        PanelEntry::FoldedDirs(folded_dirs),
3825                                        folded_depth,
3826                                        cx,
3827                                    );
3828                                }
3829                            }
3830
3831                            let fs_depth = outline_panel
3832                                .fs_entries_depth
3833                                .get(&(file.worktree_id, file.entry.id))
3834                                .copied()
3835                                .unwrap_or(0);
3836                            while let Some(parent) = parent_dirs.last() {
3837                                if file.entry.path.starts_with(&parent.path) {
3838                                    break;
3839                                }
3840                                parent_dirs.pop();
3841                            }
3842                            match parent_dirs.last() {
3843                                Some(parent) => {
3844                                    let new_depth = parent.depth + 1;
3845                                    (new_depth, parent.expanded)
3846                                }
3847                                None => (fs_depth, true),
3848                            }
3849                        }
3850                    };
3851
3852                    if !is_singleton
3853                        && (should_add || (query.is_some() && folded_dirs_entry.is_none()))
3854                    {
3855                        outline_panel.push_entry(
3856                            &mut generation_state,
3857                            track_matches,
3858                            PanelEntry::Fs(entry.clone()),
3859                            depth,
3860                            cx,
3861                        );
3862                    }
3863
3864                    match outline_panel.mode {
3865                        ItemsDisplayMode::Search(_) => {
3866                            if is_singleton || query.is_some() || (should_add && is_expanded) {
3867                                outline_panel.add_search_entries(
3868                                    &mut generation_state,
3869                                    &active_editor,
3870                                    entry.clone(),
3871                                    depth,
3872                                    query.clone(),
3873                                    is_singleton,
3874                                    cx,
3875                                );
3876                            }
3877                        }
3878                        ItemsDisplayMode::Outline => {
3879                            let excerpts_to_consider =
3880                                if is_singleton || query.is_some() || (should_add && is_expanded) {
3881                                    match &entry {
3882                                        FsEntry::File(FsEntryFile {
3883                                            buffer_id,
3884                                            excerpts,
3885                                            ..
3886                                        })
3887                                        | FsEntry::ExternalFile(FsEntryExternalFile {
3888                                            buffer_id,
3889                                            excerpts,
3890                                            ..
3891                                        }) => Some((*buffer_id, excerpts)),
3892                                        _ => None,
3893                                    }
3894                                } else {
3895                                    None
3896                                };
3897                            if let Some((buffer_id, entry_excerpts)) = excerpts_to_consider
3898                                && !active_editor.read(cx).is_buffer_folded(buffer_id, cx)
3899                            {
3900                                outline_panel.add_excerpt_entries(
3901                                    &mut generation_state,
3902                                    buffer_id,
3903                                    entry_excerpts,
3904                                    depth,
3905                                    track_matches,
3906                                    is_singleton,
3907                                    query.as_deref(),
3908                                    cx,
3909                                );
3910                            }
3911                        }
3912                    }
3913
3914                    if is_singleton
3915                        && matches!(entry, FsEntry::File(..) | FsEntry::ExternalFile(..))
3916                        && !generation_state.entries.iter().any(|item| {
3917                            matches!(item.entry, PanelEntry::Outline(..) | PanelEntry::Search(_))
3918                        })
3919                    {
3920                        outline_panel.push_entry(
3921                            &mut generation_state,
3922                            track_matches,
3923                            PanelEntry::Fs(entry.clone()),
3924                            0,
3925                            cx,
3926                        );
3927                    }
3928                }
3929
3930                if let Some((folded_depth, folded_dirs)) = folded_dirs_entry.take() {
3931                    let parent_expanded = parent_dirs
3932                        .iter()
3933                        .rev()
3934                        .find(|parent| {
3935                            folded_dirs
3936                                .entries
3937                                .iter()
3938                                .all(|entry| entry.path != parent.path)
3939                        })
3940                        .is_none_or(|parent| parent.expanded);
3941                    if parent_expanded || query.is_some() {
3942                        outline_panel.push_entry(
3943                            &mut generation_state,
3944                            track_matches,
3945                            PanelEntry::FoldedDirs(folded_dirs),
3946                            folded_depth,
3947                            cx,
3948                        );
3949                    }
3950                }
3951            }) else {
3952                return (Vec::new(), None);
3953            };
3954
3955            let Some(query) = query else {
3956                return (
3957                    generation_state.entries,
3958                    generation_state
3959                        .max_width_estimate_and_index
3960                        .map(|(_, index)| index),
3961                );
3962            };
3963
3964            let mut matched_ids = match_strings(
3965                &generation_state.match_candidates,
3966                &query,
3967                true,
3968                true,
3969                usize::MAX,
3970                &AtomicBool::default(),
3971                cx.background_executor().clone(),
3972            )
3973            .await
3974            .into_iter()
3975            .map(|string_match| (string_match.candidate_id, string_match))
3976            .collect::<HashMap<_, _>>();
3977
3978            let mut id = 0;
3979            generation_state.entries.retain_mut(|cached_entry| {
3980                let retain = match matched_ids.remove(&id) {
3981                    Some(string_match) => {
3982                        cached_entry.string_match = Some(string_match);
3983                        true
3984                    }
3985                    None => false,
3986                };
3987                id += 1;
3988                retain
3989            });
3990
3991            (
3992                generation_state.entries,
3993                generation_state
3994                    .max_width_estimate_and_index
3995                    .map(|(_, index)| index),
3996            )
3997        })
3998    }
3999
4000    fn push_entry(
4001        &self,
4002        state: &mut GenerationState,
4003        track_matches: bool,
4004        entry: PanelEntry,
4005        depth: usize,
4006        cx: &mut App,
4007    ) {
4008        let entry = if let PanelEntry::FoldedDirs(folded_dirs_entry) = &entry {
4009            match folded_dirs_entry.entries.len() {
4010                0 => {
4011                    debug_panic!("Empty folded dirs receiver");
4012                    return;
4013                }
4014                1 => PanelEntry::Fs(FsEntry::Directory(FsEntryDirectory {
4015                    worktree_id: folded_dirs_entry.worktree_id,
4016                    entry: folded_dirs_entry.entries[0].clone(),
4017                })),
4018                _ => entry,
4019            }
4020        } else {
4021            entry
4022        };
4023
4024        if track_matches {
4025            let id = state.entries.len();
4026            match &entry {
4027                PanelEntry::Fs(fs_entry) => {
4028                    if let Some(file_name) = self
4029                        .relative_path(fs_entry, cx)
4030                        .and_then(|path| Some(path.file_name()?.to_string()))
4031                    {
4032                        state
4033                            .match_candidates
4034                            .push(StringMatchCandidate::new(id, &file_name));
4035                    }
4036                }
4037                PanelEntry::FoldedDirs(folded_dir_entry) => {
4038                    let dir_names = self.dir_names_string(
4039                        &folded_dir_entry.entries,
4040                        folded_dir_entry.worktree_id,
4041                        cx,
4042                    );
4043                    {
4044                        state
4045                            .match_candidates
4046                            .push(StringMatchCandidate::new(id, &dir_names));
4047                    }
4048                }
4049                PanelEntry::Outline(OutlineEntry::Outline(outline_entry)) => state
4050                    .match_candidates
4051                    .push(StringMatchCandidate::new(id, &outline_entry.outline.text)),
4052                PanelEntry::Outline(OutlineEntry::Excerpt(_)) => {}
4053                PanelEntry::Search(new_search_entry) => {
4054                    if let Some(search_data) = new_search_entry.render_data.get() {
4055                        state
4056                            .match_candidates
4057                            .push(StringMatchCandidate::new(id, &search_data.context_text));
4058                    }
4059                }
4060            }
4061        }
4062
4063        let width_estimate = self.width_estimate(depth, &entry, cx);
4064        if Some(width_estimate)
4065            > state
4066                .max_width_estimate_and_index
4067                .map(|(estimate, _)| estimate)
4068        {
4069            state.max_width_estimate_and_index = Some((width_estimate, state.entries.len()));
4070        }
4071        state.entries.push(CachedEntry {
4072            depth,
4073            entry,
4074            string_match: None,
4075        });
4076    }
4077
4078    fn dir_names_string(&self, entries: &[GitEntry], worktree_id: WorktreeId, cx: &App) -> String {
4079        let dir_names_segment = entries
4080            .iter()
4081            .map(|entry| self.entry_name(&worktree_id, entry, cx))
4082            .collect::<PathBuf>();
4083        dir_names_segment.to_string_lossy().into_owned()
4084    }
4085
4086    fn query(&self, cx: &App) -> Option<String> {
4087        let query = self.filter_editor.read(cx).text(cx);
4088        if query.trim().is_empty() {
4089            None
4090        } else {
4091            Some(query)
4092        }
4093    }
4094
4095    fn is_expanded(&self, entry: &FsEntry) -> bool {
4096        let entry_to_check = match entry {
4097            FsEntry::ExternalFile(FsEntryExternalFile { buffer_id, .. }) => {
4098                CollapsedEntry::ExternalFile(*buffer_id)
4099            }
4100            FsEntry::File(FsEntryFile {
4101                worktree_id,
4102                buffer_id,
4103                ..
4104            }) => CollapsedEntry::File(*worktree_id, *buffer_id),
4105            FsEntry::Directory(FsEntryDirectory {
4106                worktree_id, entry, ..
4107            }) => CollapsedEntry::Dir(*worktree_id, entry.id),
4108        };
4109        !self.collapsed_entries.contains(&entry_to_check)
4110    }
4111
4112    fn update_non_fs_items(&mut self, window: &mut Window, cx: &mut Context<OutlinePanel>) -> bool {
4113        if !self.active {
4114            return false;
4115        }
4116
4117        let mut update_cached_items = false;
4118        update_cached_items |= self.update_search_matches(window, cx);
4119        self.fetch_outdated_outlines(window, cx);
4120        if update_cached_items {
4121            self.selected_entry.invalidate();
4122        }
4123        update_cached_items
4124    }
4125
4126    fn update_search_matches(
4127        &mut self,
4128        window: &mut Window,
4129        cx: &mut Context<OutlinePanel>,
4130    ) -> bool {
4131        if !self.active {
4132            return false;
4133        }
4134
4135        let project_search = self
4136            .active_item()
4137            .and_then(|item| item.downcast::<ProjectSearchView>());
4138        let project_search_matches = project_search
4139            .as_ref()
4140            .map(|project_search| project_search.read(cx).get_matches(cx))
4141            .unwrap_or_default();
4142
4143        let buffer_search = self
4144            .active_item()
4145            .as_deref()
4146            .and_then(|active_item| {
4147                self.workspace
4148                    .upgrade()
4149                    .and_then(|workspace| workspace.read(cx).pane_for(active_item))
4150            })
4151            .and_then(|pane| {
4152                pane.read(cx)
4153                    .toolbar()
4154                    .read(cx)
4155                    .item_of_type::<BufferSearchBar>()
4156            });
4157        let buffer_search_matches = self
4158            .active_editor()
4159            .map(|active_editor| {
4160                active_editor.update(cx, |editor, cx| editor.get_matches(window, cx))
4161            })
4162            .unwrap_or_default();
4163
4164        let mut update_cached_entries = false;
4165        if buffer_search_matches.is_empty() && project_search_matches.is_empty() {
4166            if matches!(self.mode, ItemsDisplayMode::Search(_)) {
4167                self.mode = ItemsDisplayMode::Outline;
4168                update_cached_entries = true;
4169            }
4170        } else {
4171            let (kind, new_search_matches, new_search_query) = if buffer_search_matches.is_empty() {
4172                (
4173                    SearchKind::Project,
4174                    project_search_matches,
4175                    project_search
4176                        .map(|project_search| project_search.read(cx).search_query_text(cx))
4177                        .unwrap_or_default(),
4178                )
4179            } else {
4180                (
4181                    SearchKind::Buffer,
4182                    buffer_search_matches,
4183                    buffer_search
4184                        .map(|buffer_search| buffer_search.read(cx).query(cx))
4185                        .unwrap_or_default(),
4186                )
4187            };
4188
4189            let mut previous_matches = HashMap::default();
4190            update_cached_entries = match &mut self.mode {
4191                ItemsDisplayMode::Search(current_search_state) => {
4192                    let update = current_search_state.query != new_search_query
4193                        || current_search_state.kind != kind
4194                        || current_search_state.matches.is_empty()
4195                        || current_search_state.matches.iter().enumerate().any(
4196                            |(i, (match_range, _))| new_search_matches.get(i) != Some(match_range),
4197                        );
4198                    if current_search_state.kind == kind {
4199                        previous_matches.extend(current_search_state.matches.drain(..));
4200                    }
4201                    update
4202                }
4203                ItemsDisplayMode::Outline => true,
4204            };
4205            self.mode = ItemsDisplayMode::Search(SearchState::new(
4206                kind,
4207                new_search_query,
4208                previous_matches,
4209                new_search_matches,
4210                cx.theme().syntax().clone(),
4211                window,
4212                cx,
4213            ));
4214        }
4215        update_cached_entries
4216    }
4217
4218    fn add_excerpt_entries(
4219        &mut self,
4220        state: &mut GenerationState,
4221        buffer_id: BufferId,
4222        entries_to_add: &[ExcerptId],
4223        parent_depth: usize,
4224        track_matches: bool,
4225        is_singleton: bool,
4226        query: Option<&str>,
4227        cx: &mut Context<Self>,
4228    ) {
4229        if let Some(excerpts) = self.excerpts.get(&buffer_id) {
4230            let buffer_snapshot = self.buffer_snapshot_for_id(buffer_id, cx);
4231
4232            for &excerpt_id in entries_to_add {
4233                let Some(excerpt) = excerpts.get(&excerpt_id) else {
4234                    continue;
4235                };
4236                let excerpt_depth = parent_depth + 1;
4237                self.push_entry(
4238                    state,
4239                    track_matches,
4240                    PanelEntry::Outline(OutlineEntry::Excerpt(OutlineEntryExcerpt {
4241                        buffer_id,
4242                        id: excerpt_id,
4243                        range: excerpt.range.clone(),
4244                    })),
4245                    excerpt_depth,
4246                    cx,
4247                );
4248
4249                let mut outline_base_depth = excerpt_depth + 1;
4250                if is_singleton {
4251                    outline_base_depth = 0;
4252                    state.clear();
4253                } else if query.is_none()
4254                    && self
4255                        .collapsed_entries
4256                        .contains(&CollapsedEntry::Excerpt(buffer_id, excerpt_id))
4257                {
4258                    continue;
4259                }
4260
4261                let mut last_depth_at_level: Vec<Option<Range<Anchor>>> = vec![None; 10];
4262
4263                let all_outlines: Vec<_> = excerpt.iter_outlines().collect();
4264
4265                let mut outline_has_children = HashMap::default();
4266                let mut visible_outlines = Vec::new();
4267                let mut collapsed_state: Option<(usize, Range<Anchor>)> = None;
4268
4269                for (i, &outline) in all_outlines.iter().enumerate() {
4270                    let has_children = all_outlines
4271                        .get(i + 1)
4272                        .map(|next| next.depth > outline.depth)
4273                        .unwrap_or(false);
4274
4275                    outline_has_children
4276                        .insert((outline.range.clone(), outline.depth), has_children);
4277
4278                    let mut should_include = true;
4279
4280                    if let Some((collapsed_depth, collapsed_range)) = &collapsed_state {
4281                        if outline.depth <= *collapsed_depth {
4282                            collapsed_state = None;
4283                        } else if let Some(buffer_snapshot) = buffer_snapshot.as_ref() {
4284                            let outline_start = outline.range.start;
4285                            if outline_start
4286                                .cmp(&collapsed_range.start, buffer_snapshot)
4287                                .is_ge()
4288                                && outline_start
4289                                    .cmp(&collapsed_range.end, buffer_snapshot)
4290                                    .is_lt()
4291                            {
4292                                should_include = false; // Skip - inside collapsed range
4293                            } else {
4294                                collapsed_state = None;
4295                            }
4296                        }
4297                    }
4298
4299                    // Check if this outline itself is collapsed
4300                    if should_include
4301                        && self.collapsed_entries.contains(&CollapsedEntry::Outline(
4302                            buffer_id,
4303                            excerpt_id,
4304                            outline.range.clone(),
4305                        ))
4306                    {
4307                        collapsed_state = Some((outline.depth, outline.range.clone()));
4308                    }
4309
4310                    if should_include {
4311                        visible_outlines.push(outline);
4312                    }
4313                }
4314
4315                self.outline_children_cache
4316                    .entry(buffer_id)
4317                    .or_default()
4318                    .extend(outline_has_children);
4319
4320                for outline in visible_outlines {
4321                    let outline_entry = OutlineEntryOutline {
4322                        buffer_id,
4323                        excerpt_id,
4324                        outline: outline.clone(),
4325                    };
4326
4327                    if outline.depth < last_depth_at_level.len() {
4328                        last_depth_at_level[outline.depth] = Some(outline.range.clone());
4329                        // Clear deeper levels when we go back to a shallower depth
4330                        for d in (outline.depth + 1)..last_depth_at_level.len() {
4331                            last_depth_at_level[d] = None;
4332                        }
4333                    }
4334
4335                    self.push_entry(
4336                        state,
4337                        track_matches,
4338                        PanelEntry::Outline(OutlineEntry::Outline(outline_entry)),
4339                        outline_base_depth + outline.depth,
4340                        cx,
4341                    );
4342                }
4343            }
4344        }
4345    }
4346
4347    fn add_search_entries(
4348        &mut self,
4349        state: &mut GenerationState,
4350        active_editor: &Entity<Editor>,
4351        parent_entry: FsEntry,
4352        parent_depth: usize,
4353        filter_query: Option<String>,
4354        is_singleton: bool,
4355        cx: &mut Context<Self>,
4356    ) {
4357        let ItemsDisplayMode::Search(search_state) = &mut self.mode else {
4358            return;
4359        };
4360
4361        let kind = search_state.kind;
4362        let related_excerpts = match &parent_entry {
4363            FsEntry::Directory(_) => return,
4364            FsEntry::ExternalFile(external) => &external.excerpts,
4365            FsEntry::File(file) => &file.excerpts,
4366        }
4367        .iter()
4368        .copied()
4369        .collect::<HashSet<_>>();
4370
4371        let depth = if is_singleton { 0 } else { parent_depth + 1 };
4372        let new_search_matches = search_state
4373            .matches
4374            .iter()
4375            .filter(|(match_range, _)| {
4376                related_excerpts.contains(&match_range.start.excerpt_id)
4377                    || related_excerpts.contains(&match_range.end.excerpt_id)
4378            })
4379            .filter(|(match_range, _)| {
4380                let editor = active_editor.read(cx);
4381                let snapshot = editor.buffer().read(cx).snapshot(cx);
4382                if let Some(buffer_id) = snapshot.buffer_id_for_anchor(match_range.start)
4383                    && editor.is_buffer_folded(buffer_id, cx)
4384                {
4385                    return false;
4386                }
4387                if let Some(buffer_id) = snapshot.buffer_id_for_anchor(match_range.end)
4388                    && editor.is_buffer_folded(buffer_id, cx)
4389                {
4390                    return false;
4391                }
4392                true
4393            });
4394
4395        let new_search_entries = new_search_matches
4396            .map(|(match_range, search_data)| SearchEntry {
4397                match_range: match_range.clone(),
4398                kind,
4399                render_data: Arc::clone(search_data),
4400            })
4401            .collect::<Vec<_>>();
4402        for new_search_entry in new_search_entries {
4403            self.push_entry(
4404                state,
4405                filter_query.is_some(),
4406                PanelEntry::Search(new_search_entry),
4407                depth,
4408                cx,
4409            );
4410        }
4411    }
4412
4413    fn active_editor(&self) -> Option<Entity<Editor>> {
4414        self.active_item.as_ref()?.active_editor.upgrade()
4415    }
4416
4417    fn active_item(&self) -> Option<Box<dyn ItemHandle>> {
4418        self.active_item.as_ref()?.item_handle.upgrade()
4419    }
4420
4421    fn should_replace_active_item(&self, new_active_item: &dyn ItemHandle) -> bool {
4422        self.active_item().is_none_or(|active_item| {
4423            !self.pinned && active_item.item_id() != new_active_item.item_id()
4424        })
4425    }
4426
4427    pub fn toggle_active_editor_pin(
4428        &mut self,
4429        _: &ToggleActiveEditorPin,
4430        window: &mut Window,
4431        cx: &mut Context<Self>,
4432    ) {
4433        self.pinned = !self.pinned;
4434        if !self.pinned
4435            && let Some((active_item, active_editor)) = self
4436                .workspace
4437                .upgrade()
4438                .and_then(|workspace| workspace_active_editor(workspace.read(cx), cx))
4439            && self.should_replace_active_item(active_item.as_ref())
4440        {
4441            self.replace_active_editor(active_item, active_editor, window, cx);
4442        }
4443
4444        cx.notify();
4445    }
4446
4447    const fn selected_entry(&self) -> Option<&PanelEntry> {
4448        match &self.selected_entry {
4449            SelectedEntry::Invalidated(entry) => entry.as_ref(),
4450            SelectedEntry::Valid(entry, _) => Some(entry),
4451            SelectedEntry::None => None,
4452        }
4453    }
4454
4455    fn select_entry(
4456        &mut self,
4457        entry: PanelEntry,
4458        focus: bool,
4459        window: &mut Window,
4460        cx: &mut Context<Self>,
4461    ) {
4462        if focus {
4463            self.focus_handle.focus(window);
4464        }
4465        let ix = self
4466            .cached_entries
4467            .iter()
4468            .enumerate()
4469            .find(|(_, cached_entry)| &cached_entry.entry == &entry)
4470            .map(|(i, _)| i)
4471            .unwrap_or_default();
4472
4473        self.selected_entry = SelectedEntry::Valid(entry, ix);
4474
4475        self.autoscroll(cx);
4476        cx.notify();
4477    }
4478
4479    fn width_estimate(&self, depth: usize, entry: &PanelEntry, cx: &App) -> u64 {
4480        let item_text_chars = match entry {
4481            PanelEntry::Fs(FsEntry::ExternalFile(external)) => self
4482                .buffer_snapshot_for_id(external.buffer_id, cx)
4483                .and_then(|snapshot| Some(snapshot.file()?.path().file_name()?.len()))
4484                .unwrap_or_default(),
4485            PanelEntry::Fs(FsEntry::Directory(directory)) => directory
4486                .entry
4487                .path
4488                .file_name()
4489                .map(|name| name.len())
4490                .unwrap_or_default(),
4491            PanelEntry::Fs(FsEntry::File(file)) => file
4492                .entry
4493                .path
4494                .file_name()
4495                .map(|name| name.len())
4496                .unwrap_or_default(),
4497            PanelEntry::FoldedDirs(folded_dirs) => {
4498                folded_dirs
4499                    .entries
4500                    .iter()
4501                    .map(|dir| {
4502                        dir.path
4503                            .file_name()
4504                            .map(|name| name.len())
4505                            .unwrap_or_default()
4506                    })
4507                    .sum::<usize>()
4508                    + folded_dirs.entries.len().saturating_sub(1) * "/".len()
4509            }
4510            PanelEntry::Outline(OutlineEntry::Excerpt(excerpt)) => self
4511                .excerpt_label(excerpt.buffer_id, &excerpt.range, cx)
4512                .map(|label| label.len())
4513                .unwrap_or_default(),
4514            PanelEntry::Outline(OutlineEntry::Outline(entry)) => entry.outline.text.len(),
4515            PanelEntry::Search(search) => search
4516                .render_data
4517                .get()
4518                .map(|data| data.context_text.len())
4519                .unwrap_or_default(),
4520        };
4521
4522        (item_text_chars + depth) as u64
4523    }
4524
4525    fn render_main_contents(
4526        &mut self,
4527        query: Option<String>,
4528        show_indent_guides: bool,
4529        indent_size: f32,
4530        window: &mut Window,
4531        cx: &mut Context<Self>,
4532    ) -> impl IntoElement {
4533        let contents = if self.cached_entries.is_empty() {
4534            let header = if self.updating_fs_entries || self.updating_cached_entries {
4535                None
4536            } else if query.is_some() {
4537                Some("No matches for query")
4538            } else {
4539                Some("No outlines available")
4540            };
4541
4542            v_flex()
4543                .id("empty-outline-state")
4544                .flex_1()
4545                .justify_center()
4546                .size_full()
4547                .when_some(header, |panel, header| {
4548                    panel
4549                        .child(h_flex().justify_center().child(Label::new(header)))
4550                        .when_some(query.clone(), |panel, query| {
4551                            panel.child(h_flex().justify_center().child(Label::new(query)))
4552                        })
4553                        .child(
4554                            h_flex()
4555                                .pt(DynamicSpacing::Base04.rems(cx))
4556                                .justify_center()
4557                                .child({
4558                                    let keystroke =
4559                                        match self.position(window, cx) {
4560                                            DockPosition::Left => window
4561                                                .keystroke_text_for(&workspace::ToggleLeftDock),
4562                                            DockPosition::Bottom => window
4563                                                .keystroke_text_for(&workspace::ToggleBottomDock),
4564                                            DockPosition::Right => window
4565                                                .keystroke_text_for(&workspace::ToggleRightDock),
4566                                        };
4567                                    Label::new(format!("Toggle this panel with {keystroke}"))
4568                                }),
4569                        )
4570                })
4571        } else {
4572            let list_contents = {
4573                let items_len = self.cached_entries.len();
4574                let multi_buffer_snapshot = self
4575                    .active_editor()
4576                    .map(|editor| editor.read(cx).buffer().read(cx).snapshot(cx));
4577                uniform_list(
4578                    "entries",
4579                    items_len,
4580                    cx.processor(move |outline_panel, range: Range<usize>, window, cx| {
4581                        let entries = outline_panel.cached_entries.get(range);
4582                        entries
4583                            .map(|entries| entries.to_vec())
4584                            .unwrap_or_default()
4585                            .into_iter()
4586                            .filter_map(|cached_entry| match cached_entry.entry {
4587                                PanelEntry::Fs(entry) => Some(outline_panel.render_entry(
4588                                    &entry,
4589                                    cached_entry.depth,
4590                                    cached_entry.string_match.as_ref(),
4591                                    window,
4592                                    cx,
4593                                )),
4594                                PanelEntry::FoldedDirs(folded_dirs_entry) => {
4595                                    Some(outline_panel.render_folded_dirs(
4596                                        &folded_dirs_entry,
4597                                        cached_entry.depth,
4598                                        cached_entry.string_match.as_ref(),
4599                                        window,
4600                                        cx,
4601                                    ))
4602                                }
4603                                PanelEntry::Outline(OutlineEntry::Excerpt(excerpt)) => {
4604                                    outline_panel.render_excerpt(
4605                                        &excerpt,
4606                                        cached_entry.depth,
4607                                        window,
4608                                        cx,
4609                                    )
4610                                }
4611                                PanelEntry::Outline(OutlineEntry::Outline(entry)) => {
4612                                    Some(outline_panel.render_outline(
4613                                        &entry,
4614                                        cached_entry.depth,
4615                                        cached_entry.string_match.as_ref(),
4616                                        window,
4617                                        cx,
4618                                    ))
4619                                }
4620                                PanelEntry::Search(SearchEntry {
4621                                    match_range,
4622                                    render_data,
4623                                    kind,
4624                                    ..
4625                                }) => outline_panel.render_search_match(
4626                                    multi_buffer_snapshot.as_ref(),
4627                                    &match_range,
4628                                    &render_data,
4629                                    kind,
4630                                    cached_entry.depth,
4631                                    cached_entry.string_match.as_ref(),
4632                                    window,
4633                                    cx,
4634                                ),
4635                            })
4636                            .collect()
4637                    }),
4638                )
4639                .with_sizing_behavior(ListSizingBehavior::Infer)
4640                .with_horizontal_sizing_behavior(ListHorizontalSizingBehavior::Unconstrained)
4641                .with_width_from_item(self.max_width_item_index)
4642                .track_scroll(self.scroll_handle.clone())
4643                .when(show_indent_guides, |list| {
4644                    list.with_decoration(
4645                        ui::indent_guides(px(indent_size), IndentGuideColors::panel(cx))
4646                            .with_compute_indents_fn(cx.entity(), |outline_panel, range, _, _| {
4647                                let entries = outline_panel.cached_entries.get(range);
4648                                if let Some(entries) = entries {
4649                                    entries.iter().map(|item| item.depth).collect()
4650                                } else {
4651                                    smallvec::SmallVec::new()
4652                                }
4653                            })
4654                            .with_render_fn(cx.entity(), move |outline_panel, params, _, _| {
4655                                const LEFT_OFFSET: Pixels = px(14.);
4656
4657                                let indent_size = params.indent_size;
4658                                let item_height = params.item_height;
4659                                let active_indent_guide_ix = find_active_indent_guide_ix(
4660                                    outline_panel,
4661                                    &params.indent_guides,
4662                                );
4663
4664                                params
4665                                    .indent_guides
4666                                    .into_iter()
4667                                    .enumerate()
4668                                    .map(|(ix, layout)| {
4669                                        let bounds = Bounds::new(
4670                                            point(
4671                                                layout.offset.x * indent_size + LEFT_OFFSET,
4672                                                layout.offset.y * item_height,
4673                                            ),
4674                                            size(px(1.), layout.length * item_height),
4675                                        );
4676                                        ui::RenderedIndentGuide {
4677                                            bounds,
4678                                            layout,
4679                                            is_active: active_indent_guide_ix == Some(ix),
4680                                            hitbox: None,
4681                                        }
4682                                    })
4683                                    .collect()
4684                            }),
4685                    )
4686                })
4687            };
4688
4689            v_flex()
4690                .flex_shrink()
4691                .size_full()
4692                .child(list_contents.size_full().flex_shrink())
4693                .custom_scrollbars(
4694                    Scrollbars::for_settings::<OutlinePanelSettings>()
4695                        .tracked_scroll_handle(self.scroll_handle.clone())
4696                        .with_track_along(
4697                            ScrollAxes::Horizontal,
4698                            cx.theme().colors().panel_background,
4699                        )
4700                        .tracked_entity(cx.entity_id()),
4701                    window,
4702                    cx,
4703                )
4704        }
4705        .children(self.context_menu.as_ref().map(|(menu, position, _)| {
4706            deferred(
4707                anchored()
4708                    .position(*position)
4709                    .anchor(gpui::Corner::TopLeft)
4710                    .child(menu.clone()),
4711            )
4712            .with_priority(1)
4713        }));
4714
4715        v_flex().w_full().flex_1().overflow_hidden().child(contents)
4716    }
4717
4718    fn render_filter_footer(&mut self, pinned: bool, cx: &mut Context<Self>) -> Div {
4719        v_flex().flex_none().child(horizontal_separator(cx)).child(
4720            h_flex()
4721                .p_2()
4722                .w_full()
4723                .child(self.filter_editor.clone())
4724                .child(
4725                    div().child(
4726                        IconButton::new(
4727                            "outline-panel-menu",
4728                            if pinned {
4729                                IconName::Unpin
4730                            } else {
4731                                IconName::Pin
4732                            },
4733                        )
4734                        .tooltip(Tooltip::text(if pinned {
4735                            "Unpin Outline"
4736                        } else {
4737                            "Pin Active Outline"
4738                        }))
4739                        .shape(IconButtonShape::Square)
4740                        .on_click(cx.listener(
4741                            |outline_panel, _, window, cx| {
4742                                outline_panel.toggle_active_editor_pin(
4743                                    &ToggleActiveEditorPin,
4744                                    window,
4745                                    cx,
4746                                );
4747                            },
4748                        )),
4749                    ),
4750                ),
4751        )
4752    }
4753
4754    fn buffers_inside_directory(
4755        &self,
4756        dir_worktree: WorktreeId,
4757        dir_entry: &GitEntry,
4758    ) -> HashSet<BufferId> {
4759        if !dir_entry.is_dir() {
4760            debug_panic!("buffers_inside_directory called on a non-directory entry {dir_entry:?}");
4761            return HashSet::default();
4762        }
4763
4764        self.fs_entries
4765            .iter()
4766            .skip_while(|fs_entry| match fs_entry {
4767                FsEntry::Directory(directory) => {
4768                    directory.worktree_id != dir_worktree || &directory.entry != dir_entry
4769                }
4770                _ => true,
4771            })
4772            .skip(1)
4773            .take_while(|fs_entry| match fs_entry {
4774                FsEntry::ExternalFile(..) => false,
4775                FsEntry::Directory(directory) => {
4776                    directory.worktree_id == dir_worktree
4777                        && directory.entry.path.starts_with(&dir_entry.path)
4778                }
4779                FsEntry::File(file) => {
4780                    file.worktree_id == dir_worktree && file.entry.path.starts_with(&dir_entry.path)
4781                }
4782            })
4783            .filter_map(|fs_entry| match fs_entry {
4784                FsEntry::File(file) => Some(file.buffer_id),
4785                _ => None,
4786            })
4787            .collect()
4788    }
4789}
4790
4791fn workspace_active_editor(
4792    workspace: &Workspace,
4793    cx: &App,
4794) -> Option<(Box<dyn ItemHandle>, Entity<Editor>)> {
4795    let active_item = workspace.active_item(cx)?;
4796    let active_editor = active_item
4797        .act_as::<Editor>(cx)
4798        .filter(|editor| editor.read(cx).mode().is_full())?;
4799    Some((active_item, active_editor))
4800}
4801
4802fn back_to_common_visited_parent(
4803    visited_dirs: &mut Vec<(ProjectEntryId, Arc<RelPath>)>,
4804    worktree_id: &WorktreeId,
4805    new_entry: &Entry,
4806) -> Option<(WorktreeId, ProjectEntryId)> {
4807    while let Some((visited_dir_id, visited_path)) = visited_dirs.last() {
4808        match new_entry.path.parent() {
4809            Some(parent_path) => {
4810                if parent_path == visited_path.as_ref() {
4811                    return Some((*worktree_id, *visited_dir_id));
4812                }
4813            }
4814            None => {
4815                break;
4816            }
4817        }
4818        visited_dirs.pop();
4819    }
4820    None
4821}
4822
4823fn file_name(path: &Path) -> String {
4824    let mut current_path = path;
4825    loop {
4826        if let Some(file_name) = current_path.file_name() {
4827            return file_name.to_string_lossy().into_owned();
4828        }
4829        match current_path.parent() {
4830            Some(parent) => current_path = parent,
4831            None => return path.to_string_lossy().into_owned(),
4832        }
4833    }
4834}
4835
4836impl Panel for OutlinePanel {
4837    fn persistent_name() -> &'static str {
4838        "Outline Panel"
4839    }
4840
4841    fn position(&self, _: &Window, cx: &App) -> DockPosition {
4842        match OutlinePanelSettings::get_global(cx).dock {
4843            DockSide::Left => DockPosition::Left,
4844            DockSide::Right => DockPosition::Right,
4845        }
4846    }
4847
4848    fn position_is_valid(&self, position: DockPosition) -> bool {
4849        matches!(position, DockPosition::Left | DockPosition::Right)
4850    }
4851
4852    fn set_position(&mut self, position: DockPosition, _: &mut Window, cx: &mut Context<Self>) {
4853        settings::update_settings_file(self.fs.clone(), cx, move |settings, _| {
4854            let dock = match position {
4855                DockPosition::Left | DockPosition::Bottom => DockSide::Left,
4856                DockPosition::Right => DockSide::Right,
4857            };
4858            settings.outline_panel.get_or_insert_default().dock = Some(dock);
4859        });
4860    }
4861
4862    fn size(&self, _: &Window, cx: &App) -> Pixels {
4863        self.width
4864            .unwrap_or_else(|| OutlinePanelSettings::get_global(cx).default_width)
4865    }
4866
4867    fn set_size(&mut self, size: Option<Pixels>, window: &mut Window, cx: &mut Context<Self>) {
4868        self.width = size;
4869        cx.notify();
4870        cx.defer_in(window, |this, _, cx| {
4871            this.serialize(cx);
4872        });
4873    }
4874
4875    fn icon(&self, _: &Window, cx: &App) -> Option<IconName> {
4876        OutlinePanelSettings::get_global(cx)
4877            .button
4878            .then_some(IconName::ListTree)
4879    }
4880
4881    fn icon_tooltip(&self, _window: &Window, _: &App) -> Option<&'static str> {
4882        Some("Outline Panel")
4883    }
4884
4885    fn toggle_action(&self) -> Box<dyn Action> {
4886        Box::new(ToggleFocus)
4887    }
4888
4889    fn starts_open(&self, _window: &Window, _: &App) -> bool {
4890        self.active
4891    }
4892
4893    fn set_active(&mut self, active: bool, window: &mut Window, cx: &mut Context<Self>) {
4894        cx.spawn_in(window, async move |outline_panel, cx| {
4895            outline_panel
4896                .update_in(cx, |outline_panel, window, cx| {
4897                    let old_active = outline_panel.active;
4898                    outline_panel.active = active;
4899                    if old_active != active {
4900                        if active
4901                            && let Some((active_item, active_editor)) =
4902                                outline_panel.workspace.upgrade().and_then(|workspace| {
4903                                    workspace_active_editor(workspace.read(cx), cx)
4904                                })
4905                        {
4906                            if outline_panel.should_replace_active_item(active_item.as_ref()) {
4907                                outline_panel.replace_active_editor(
4908                                    active_item,
4909                                    active_editor,
4910                                    window,
4911                                    cx,
4912                                );
4913                            } else {
4914                                outline_panel.update_fs_entries(active_editor, None, window, cx)
4915                            }
4916                            return;
4917                        }
4918
4919                        if !outline_panel.pinned {
4920                            outline_panel.clear_previous(window, cx);
4921                        }
4922                    }
4923                    outline_panel.serialize(cx);
4924                })
4925                .ok();
4926        })
4927        .detach()
4928    }
4929
4930    fn activation_priority(&self) -> u32 {
4931        5
4932    }
4933}
4934
4935impl Focusable for OutlinePanel {
4936    fn focus_handle(&self, cx: &App) -> FocusHandle {
4937        self.filter_editor.focus_handle(cx)
4938    }
4939}
4940
4941impl EventEmitter<Event> for OutlinePanel {}
4942
4943impl EventEmitter<PanelEvent> for OutlinePanel {}
4944
4945impl Render for OutlinePanel {
4946    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
4947        let (is_local, is_via_ssh) = self.project.read_with(cx, |project, _| {
4948            (project.is_local(), project.is_via_remote_server())
4949        });
4950        let query = self.query(cx);
4951        let pinned = self.pinned;
4952        let settings = OutlinePanelSettings::get_global(cx);
4953        let indent_size = settings.indent_size;
4954        let show_indent_guides = settings.indent_guides.show == ShowIndentGuides::Always;
4955
4956        let search_query = match &self.mode {
4957            ItemsDisplayMode::Search(search_query) => Some(search_query),
4958            _ => None,
4959        };
4960
4961        v_flex()
4962            .id("outline-panel")
4963            .size_full()
4964            .overflow_hidden()
4965            .relative()
4966            .key_context(self.dispatch_context(window, cx))
4967            .on_action(cx.listener(Self::open_selected_entry))
4968            .on_action(cx.listener(Self::cancel))
4969            .on_action(cx.listener(Self::select_next))
4970            .on_action(cx.listener(Self::select_previous))
4971            .on_action(cx.listener(Self::select_first))
4972            .on_action(cx.listener(Self::select_last))
4973            .on_action(cx.listener(Self::select_parent))
4974            .on_action(cx.listener(Self::expand_selected_entry))
4975            .on_action(cx.listener(Self::collapse_selected_entry))
4976            .on_action(cx.listener(Self::expand_all_entries))
4977            .on_action(cx.listener(Self::collapse_all_entries))
4978            .on_action(cx.listener(Self::copy_path))
4979            .on_action(cx.listener(Self::copy_relative_path))
4980            .on_action(cx.listener(Self::toggle_active_editor_pin))
4981            .on_action(cx.listener(Self::unfold_directory))
4982            .on_action(cx.listener(Self::fold_directory))
4983            .on_action(cx.listener(Self::open_excerpts))
4984            .on_action(cx.listener(Self::open_excerpts_split))
4985            .when(is_local, |el| {
4986                el.on_action(cx.listener(Self::reveal_in_finder))
4987            })
4988            .when(is_local || is_via_ssh, |el| {
4989                el.on_action(cx.listener(Self::open_in_terminal))
4990            })
4991            .on_mouse_down(
4992                MouseButton::Right,
4993                cx.listener(move |outline_panel, event: &MouseDownEvent, window, cx| {
4994                    if let Some(entry) = outline_panel.selected_entry().cloned() {
4995                        outline_panel.deploy_context_menu(event.position, entry, window, cx)
4996                    } else if let Some(entry) = outline_panel.fs_entries.first().cloned() {
4997                        outline_panel.deploy_context_menu(
4998                            event.position,
4999                            PanelEntry::Fs(entry),
5000                            window,
5001                            cx,
5002                        )
5003                    }
5004                }),
5005            )
5006            .track_focus(&self.focus_handle)
5007            .when_some(search_query, |outline_panel, search_state| {
5008                outline_panel.child(
5009                    h_flex()
5010                        .py_1p5()
5011                        .px_2()
5012                        .h(DynamicSpacing::Base32.px(cx))
5013                        .flex_shrink_0()
5014                        .border_b_1()
5015                        .border_color(cx.theme().colors().border)
5016                        .gap_0p5()
5017                        .child(Label::new("Searching:").color(Color::Muted))
5018                        .child(Label::new(search_state.query.to_string())),
5019                )
5020            })
5021            .child(self.render_main_contents(query, show_indent_guides, indent_size, window, cx))
5022            .child(self.render_filter_footer(pinned, cx))
5023    }
5024}
5025
5026fn find_active_indent_guide_ix(
5027    outline_panel: &OutlinePanel,
5028    candidates: &[IndentGuideLayout],
5029) -> Option<usize> {
5030    let SelectedEntry::Valid(_, target_ix) = &outline_panel.selected_entry else {
5031        return None;
5032    };
5033    let target_depth = outline_panel
5034        .cached_entries
5035        .get(*target_ix)
5036        .map(|cached_entry| cached_entry.depth)?;
5037
5038    let (target_ix, target_depth) = if let Some(target_depth) = outline_panel
5039        .cached_entries
5040        .get(target_ix + 1)
5041        .filter(|cached_entry| cached_entry.depth > target_depth)
5042        .map(|entry| entry.depth)
5043    {
5044        (target_ix + 1, target_depth.saturating_sub(1))
5045    } else {
5046        (*target_ix, target_depth.saturating_sub(1))
5047    };
5048
5049    candidates
5050        .iter()
5051        .enumerate()
5052        .find(|(_, guide)| {
5053            guide.offset.y <= target_ix
5054                && target_ix < guide.offset.y + guide.length
5055                && guide.offset.x == target_depth
5056        })
5057        .map(|(ix, _)| ix)
5058}
5059
5060fn subscribe_for_editor_events(
5061    editor: &Entity<Editor>,
5062    window: &mut Window,
5063    cx: &mut Context<OutlinePanel>,
5064) -> Subscription {
5065    let debounce = Some(UPDATE_DEBOUNCE);
5066    cx.subscribe_in(
5067        editor,
5068        window,
5069        move |outline_panel, editor, e: &EditorEvent, window, cx| {
5070            if !outline_panel.active {
5071                return;
5072            }
5073            match e {
5074                EditorEvent::SelectionsChanged { local: true } => {
5075                    outline_panel.reveal_entry_for_selection(editor.clone(), window, cx);
5076                    cx.notify();
5077                }
5078                EditorEvent::ExcerptsAdded { excerpts, .. } => {
5079                    outline_panel
5080                        .new_entries_for_fs_update
5081                        .extend(excerpts.iter().map(|&(excerpt_id, _)| excerpt_id));
5082                    outline_panel.update_fs_entries(editor.clone(), debounce, window, cx);
5083                }
5084                EditorEvent::ExcerptsRemoved { ids, .. } => {
5085                    let mut ids = ids.iter().collect::<HashSet<_>>();
5086                    for excerpts in outline_panel.excerpts.values_mut() {
5087                        excerpts.retain(|excerpt_id, _| !ids.remove(excerpt_id));
5088                        if ids.is_empty() {
5089                            break;
5090                        }
5091                    }
5092                    outline_panel.update_fs_entries(editor.clone(), debounce, window, cx);
5093                }
5094                EditorEvent::ExcerptsExpanded { ids } => {
5095                    outline_panel.invalidate_outlines(ids);
5096                    let update_cached_items = outline_panel.update_non_fs_items(window, cx);
5097                    if update_cached_items {
5098                        outline_panel.update_cached_entries(Some(UPDATE_DEBOUNCE), window, cx);
5099                    }
5100                }
5101                EditorEvent::ExcerptsEdited { ids } => {
5102                    outline_panel.invalidate_outlines(ids);
5103                    let update_cached_items = outline_panel.update_non_fs_items(window, cx);
5104                    if update_cached_items {
5105                        outline_panel.update_cached_entries(Some(UPDATE_DEBOUNCE), window, cx);
5106                    }
5107                }
5108                EditorEvent::BufferFoldToggled { ids, .. } => {
5109                    outline_panel.invalidate_outlines(ids);
5110                    let mut latest_unfolded_buffer_id = None;
5111                    let mut latest_folded_buffer_id = None;
5112                    let mut ignore_selections_change = false;
5113                    outline_panel.new_entries_for_fs_update.extend(
5114                        ids.iter()
5115                            .filter(|id| {
5116                                outline_panel
5117                                    .excerpts
5118                                    .iter()
5119                                    .find_map(|(buffer_id, excerpts)| {
5120                                        if excerpts.contains_key(id) {
5121                                            ignore_selections_change |= outline_panel
5122                                                .preserve_selection_on_buffer_fold_toggles
5123                                                .remove(buffer_id);
5124                                            Some(buffer_id)
5125                                        } else {
5126                                            None
5127                                        }
5128                                    })
5129                                    .map(|buffer_id| {
5130                                        if editor.read(cx).is_buffer_folded(*buffer_id, cx) {
5131                                            latest_folded_buffer_id = Some(*buffer_id);
5132                                            false
5133                                        } else {
5134                                            latest_unfolded_buffer_id = Some(*buffer_id);
5135                                            true
5136                                        }
5137                                    })
5138                                    .unwrap_or(true)
5139                            })
5140                            .copied(),
5141                    );
5142                    if !ignore_selections_change
5143                        && let Some(entry_to_select) = latest_unfolded_buffer_id
5144                            .or(latest_folded_buffer_id)
5145                            .and_then(|toggled_buffer_id| {
5146                                outline_panel.fs_entries.iter().find_map(
5147                                    |fs_entry| match fs_entry {
5148                                        FsEntry::ExternalFile(external) => {
5149                                            if external.buffer_id == toggled_buffer_id {
5150                                                Some(fs_entry.clone())
5151                                            } else {
5152                                                None
5153                                            }
5154                                        }
5155                                        FsEntry::File(FsEntryFile { buffer_id, .. }) => {
5156                                            if *buffer_id == toggled_buffer_id {
5157                                                Some(fs_entry.clone())
5158                                            } else {
5159                                                None
5160                                            }
5161                                        }
5162                                        FsEntry::Directory(..) => None,
5163                                    },
5164                                )
5165                            })
5166                            .map(PanelEntry::Fs)
5167                    {
5168                        outline_panel.select_entry(entry_to_select, true, window, cx);
5169                    }
5170
5171                    outline_panel.update_fs_entries(editor.clone(), debounce, window, cx);
5172                }
5173                EditorEvent::Reparsed(buffer_id) => {
5174                    if let Some(excerpts) = outline_panel.excerpts.get_mut(buffer_id) {
5175                        for excerpt in excerpts.values_mut() {
5176                            excerpt.invalidate_outlines();
5177                        }
5178                    }
5179                    let update_cached_items = outline_panel.update_non_fs_items(window, cx);
5180                    if update_cached_items {
5181                        outline_panel.update_cached_entries(Some(UPDATE_DEBOUNCE), window, cx);
5182                    }
5183                }
5184                _ => {}
5185            }
5186        },
5187    )
5188}
5189
5190fn empty_icon() -> AnyElement {
5191    h_flex()
5192        .size(IconSize::default().rems())
5193        .invisible()
5194        .flex_none()
5195        .into_any_element()
5196}
5197
5198fn horizontal_separator(cx: &mut App) -> Div {
5199    div().mx_2().border_primary(cx).border_t_1()
5200}
5201
5202#[derive(Debug, Default)]
5203struct GenerationState {
5204    entries: Vec<CachedEntry>,
5205    match_candidates: Vec<StringMatchCandidate>,
5206    max_width_estimate_and_index: Option<(u64, usize)>,
5207}
5208
5209impl GenerationState {
5210    fn clear(&mut self) {
5211        self.entries.clear();
5212        self.match_candidates.clear();
5213        self.max_width_estimate_and_index = None;
5214    }
5215}
5216
5217#[cfg(test)]
5218mod tests {
5219    use db::indoc;
5220    use gpui::{TestAppContext, VisualTestContext, WindowHandle};
5221    use language::{Language, LanguageConfig, LanguageMatcher, tree_sitter_rust};
5222    use pretty_assertions::assert_eq;
5223    use project::FakeFs;
5224    use search::project_search::{self, perform_project_search};
5225    use serde_json::json;
5226    use util::path;
5227    use workspace::{OpenOptions, OpenVisible};
5228
5229    use super::*;
5230
5231    const SELECTED_MARKER: &str = "  <==== selected";
5232
5233    #[gpui::test(iterations = 10)]
5234    async fn test_project_search_results_toggling(cx: &mut TestAppContext) {
5235        init_test(cx);
5236
5237        let fs = FakeFs::new(cx.background_executor.clone());
5238        let root = path!("/rust-analyzer");
5239        populate_with_test_ra_project(&fs, root).await;
5240        let project = Project::test(fs.clone(), [Path::new(root)], cx).await;
5241        project.read_with(cx, |project, _| {
5242            project.languages().add(Arc::new(rust_lang()))
5243        });
5244        let workspace = add_outline_panel(&project, cx).await;
5245        let cx = &mut VisualTestContext::from_window(*workspace, cx);
5246        let outline_panel = outline_panel(&workspace, cx);
5247        outline_panel.update_in(cx, |outline_panel, window, cx| {
5248            outline_panel.set_active(true, window, cx)
5249        });
5250
5251        workspace
5252            .update(cx, |workspace, window, cx| {
5253                ProjectSearchView::deploy_search(
5254                    workspace,
5255                    &workspace::DeploySearch::default(),
5256                    window,
5257                    cx,
5258                )
5259            })
5260            .unwrap();
5261        let search_view = workspace
5262            .update(cx, |workspace, _, cx| {
5263                workspace
5264                    .active_pane()
5265                    .read(cx)
5266                    .items()
5267                    .find_map(|item| item.downcast::<ProjectSearchView>())
5268                    .expect("Project search view expected to appear after new search event trigger")
5269            })
5270            .unwrap();
5271
5272        let query = "param_names_for_lifetime_elision_hints";
5273        perform_project_search(&search_view, query, cx);
5274        search_view.update(cx, |search_view, cx| {
5275            search_view
5276                .results_editor()
5277                .update(cx, |results_editor, cx| {
5278                    assert_eq!(
5279                        results_editor.display_text(cx).match_indices(query).count(),
5280                        9
5281                    );
5282                });
5283        });
5284
5285        let all_matches = r#"rust-analyzer/
5286  crates/
5287    ide/src/
5288      inlay_hints/
5289        fn_lifetime_fn.rs
5290          search: match config.param_names_for_lifetime_elision_hints {
5291          search: allocated_lifetimes.push(if config.param_names_for_lifetime_elision_hints {
5292          search: Some(it) if config.param_names_for_lifetime_elision_hints => {
5293          search: InlayHintsConfig { param_names_for_lifetime_elision_hints: true, ..TEST_CONFIG },
5294      inlay_hints.rs
5295        search: pub param_names_for_lifetime_elision_hints: bool,
5296        search: param_names_for_lifetime_elision_hints: self
5297      static_index.rs
5298        search: param_names_for_lifetime_elision_hints: false,
5299    rust-analyzer/src/
5300      cli/
5301        analysis_stats.rs
5302          search: param_names_for_lifetime_elision_hints: true,
5303      config.rs
5304        search: param_names_for_lifetime_elision_hints: self"#
5305            .to_string();
5306
5307        let select_first_in_all_matches = |line_to_select: &str| {
5308            assert!(all_matches.contains(line_to_select));
5309            all_matches.replacen(
5310                line_to_select,
5311                &format!("{line_to_select}{SELECTED_MARKER}"),
5312                1,
5313            )
5314        };
5315
5316        cx.executor()
5317            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5318        cx.run_until_parked();
5319        outline_panel.update(cx, |outline_panel, cx| {
5320            assert_eq!(
5321                display_entries(
5322                    &project,
5323                    &snapshot(outline_panel, cx),
5324                    &outline_panel.cached_entries,
5325                    outline_panel.selected_entry(),
5326                    cx,
5327                ),
5328                select_first_in_all_matches(
5329                    "search: match config.param_names_for_lifetime_elision_hints {"
5330                )
5331            );
5332        });
5333
5334        outline_panel.update_in(cx, |outline_panel, window, cx| {
5335            outline_panel.select_parent(&SelectParent, window, cx);
5336            assert_eq!(
5337                display_entries(
5338                    &project,
5339                    &snapshot(outline_panel, cx),
5340                    &outline_panel.cached_entries,
5341                    outline_panel.selected_entry(),
5342                    cx,
5343                ),
5344                select_first_in_all_matches("fn_lifetime_fn.rs")
5345            );
5346        });
5347        outline_panel.update_in(cx, |outline_panel, window, cx| {
5348            outline_panel.collapse_selected_entry(&CollapseSelectedEntry, window, cx);
5349        });
5350        cx.executor()
5351            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5352        cx.run_until_parked();
5353        outline_panel.update(cx, |outline_panel, cx| {
5354            assert_eq!(
5355                display_entries(
5356                    &project,
5357                    &snapshot(outline_panel, cx),
5358                    &outline_panel.cached_entries,
5359                    outline_panel.selected_entry(),
5360                    cx,
5361                ),
5362                format!(
5363                    r#"rust-analyzer/
5364  crates/
5365    ide/src/
5366      inlay_hints/
5367        fn_lifetime_fn.rs{SELECTED_MARKER}
5368      inlay_hints.rs
5369        search: pub param_names_for_lifetime_elision_hints: bool,
5370        search: param_names_for_lifetime_elision_hints: self
5371      static_index.rs
5372        search: param_names_for_lifetime_elision_hints: false,
5373    rust-analyzer/src/
5374      cli/
5375        analysis_stats.rs
5376          search: param_names_for_lifetime_elision_hints: true,
5377      config.rs
5378        search: param_names_for_lifetime_elision_hints: self"#,
5379                )
5380            );
5381        });
5382
5383        outline_panel.update_in(cx, |outline_panel, window, cx| {
5384            outline_panel.expand_all_entries(&ExpandAllEntries, window, cx);
5385        });
5386        cx.executor()
5387            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5388        cx.run_until_parked();
5389        outline_panel.update_in(cx, |outline_panel, window, cx| {
5390            outline_panel.select_parent(&SelectParent, window, cx);
5391            assert_eq!(
5392                display_entries(
5393                    &project,
5394                    &snapshot(outline_panel, cx),
5395                    &outline_panel.cached_entries,
5396                    outline_panel.selected_entry(),
5397                    cx,
5398                ),
5399                select_first_in_all_matches("inlay_hints/")
5400            );
5401        });
5402
5403        outline_panel.update_in(cx, |outline_panel, window, cx| {
5404            outline_panel.select_parent(&SelectParent, window, cx);
5405            assert_eq!(
5406                display_entries(
5407                    &project,
5408                    &snapshot(outline_panel, cx),
5409                    &outline_panel.cached_entries,
5410                    outline_panel.selected_entry(),
5411                    cx,
5412                ),
5413                select_first_in_all_matches("ide/src/")
5414            );
5415        });
5416
5417        outline_panel.update_in(cx, |outline_panel, window, cx| {
5418            outline_panel.collapse_selected_entry(&CollapseSelectedEntry, window, cx);
5419        });
5420        cx.executor()
5421            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5422        cx.run_until_parked();
5423        outline_panel.update(cx, |outline_panel, 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                format!(
5433                    r#"rust-analyzer/
5434  crates/
5435    ide/src/{SELECTED_MARKER}
5436    rust-analyzer/src/
5437      cli/
5438        analysis_stats.rs
5439          search: param_names_for_lifetime_elision_hints: true,
5440      config.rs
5441        search: param_names_for_lifetime_elision_hints: self"#,
5442                )
5443            );
5444        });
5445        outline_panel.update_in(cx, |outline_panel, window, cx| {
5446            outline_panel.expand_selected_entry(&ExpandSelectedEntry, window, cx);
5447        });
5448        cx.executor()
5449            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5450        cx.run_until_parked();
5451        outline_panel.update(cx, |outline_panel, cx| {
5452            assert_eq!(
5453                display_entries(
5454                    &project,
5455                    &snapshot(outline_panel, cx),
5456                    &outline_panel.cached_entries,
5457                    outline_panel.selected_entry(),
5458                    cx,
5459                ),
5460                select_first_in_all_matches("ide/src/")
5461            );
5462        });
5463    }
5464
5465    #[gpui::test(iterations = 10)]
5466    async fn test_item_filtering(cx: &mut TestAppContext) {
5467        init_test(cx);
5468
5469        let fs = FakeFs::new(cx.background_executor.clone());
5470        let root = path!("/rust-analyzer");
5471        populate_with_test_ra_project(&fs, root).await;
5472        let project = Project::test(fs.clone(), [Path::new(root)], cx).await;
5473        project.read_with(cx, |project, _| {
5474            project.languages().add(Arc::new(rust_lang()))
5475        });
5476        let workspace = add_outline_panel(&project, cx).await;
5477        let cx = &mut VisualTestContext::from_window(*workspace, cx);
5478        let outline_panel = outline_panel(&workspace, cx);
5479        outline_panel.update_in(cx, |outline_panel, window, cx| {
5480            outline_panel.set_active(true, window, cx)
5481        });
5482
5483        workspace
5484            .update(cx, |workspace, window, cx| {
5485                ProjectSearchView::deploy_search(
5486                    workspace,
5487                    &workspace::DeploySearch::default(),
5488                    window,
5489                    cx,
5490                )
5491            })
5492            .unwrap();
5493        let search_view = workspace
5494            .update(cx, |workspace, _, cx| {
5495                workspace
5496                    .active_pane()
5497                    .read(cx)
5498                    .items()
5499                    .find_map(|item| item.downcast::<ProjectSearchView>())
5500                    .expect("Project search view expected to appear after new search event trigger")
5501            })
5502            .unwrap();
5503
5504        let query = "param_names_for_lifetime_elision_hints";
5505        perform_project_search(&search_view, query, cx);
5506        search_view.update(cx, |search_view, cx| {
5507            search_view
5508                .results_editor()
5509                .update(cx, |results_editor, cx| {
5510                    assert_eq!(
5511                        results_editor.display_text(cx).match_indices(query).count(),
5512                        9
5513                    );
5514                });
5515        });
5516        let all_matches = r#"rust-analyzer/
5517  crates/
5518    ide/src/
5519      inlay_hints/
5520        fn_lifetime_fn.rs
5521          search: match config.param_names_for_lifetime_elision_hints {
5522          search: allocated_lifetimes.push(if config.param_names_for_lifetime_elision_hints {
5523          search: Some(it) if config.param_names_for_lifetime_elision_hints => {
5524          search: InlayHintsConfig { param_names_for_lifetime_elision_hints: true, ..TEST_CONFIG },
5525      inlay_hints.rs
5526        search: pub param_names_for_lifetime_elision_hints: bool,
5527        search: param_names_for_lifetime_elision_hints: self
5528      static_index.rs
5529        search: param_names_for_lifetime_elision_hints: false,
5530    rust-analyzer/src/
5531      cli/
5532        analysis_stats.rs
5533          search: param_names_for_lifetime_elision_hints: true,
5534      config.rs
5535        search: param_names_for_lifetime_elision_hints: self"#
5536            .to_string();
5537
5538        cx.executor()
5539            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5540        cx.run_until_parked();
5541        outline_panel.update(cx, |outline_panel, cx| {
5542            assert_eq!(
5543                display_entries(
5544                    &project,
5545                    &snapshot(outline_panel, cx),
5546                    &outline_panel.cached_entries,
5547                    None,
5548                    cx,
5549                ),
5550                all_matches,
5551            );
5552        });
5553
5554        let filter_text = "a";
5555        outline_panel.update_in(cx, |outline_panel, window, cx| {
5556            outline_panel.filter_editor.update(cx, |filter_editor, cx| {
5557                filter_editor.set_text(filter_text, window, cx);
5558            });
5559        });
5560        cx.executor()
5561            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5562        cx.run_until_parked();
5563
5564        outline_panel.update(cx, |outline_panel, cx| {
5565            assert_eq!(
5566                display_entries(
5567                    &project,
5568                    &snapshot(outline_panel, cx),
5569                    &outline_panel.cached_entries,
5570                    None,
5571                    cx,
5572                ),
5573                all_matches
5574                    .lines()
5575                    .skip(1) // `/rust-analyzer/` is a root entry with path `` and it will be filtered out
5576                    .filter(|item| item.contains(filter_text))
5577                    .collect::<Vec<_>>()
5578                    .join("\n"),
5579            );
5580        });
5581
5582        outline_panel.update_in(cx, |outline_panel, window, cx| {
5583            outline_panel.filter_editor.update(cx, |filter_editor, cx| {
5584                filter_editor.set_text("", window, cx);
5585            });
5586        });
5587        cx.executor()
5588            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5589        cx.run_until_parked();
5590        outline_panel.update(cx, |outline_panel, cx| {
5591            assert_eq!(
5592                display_entries(
5593                    &project,
5594                    &snapshot(outline_panel, cx),
5595                    &outline_panel.cached_entries,
5596                    None,
5597                    cx,
5598                ),
5599                all_matches,
5600            );
5601        });
5602    }
5603
5604    #[gpui::test(iterations = 10)]
5605    async fn test_item_opening(cx: &mut TestAppContext) {
5606        init_test(cx);
5607
5608        let fs = FakeFs::new(cx.background_executor.clone());
5609        let root = path!("/rust-analyzer");
5610        populate_with_test_ra_project(&fs, root).await;
5611        let project = Project::test(fs.clone(), [Path::new(root)], cx).await;
5612        project.read_with(cx, |project, _| {
5613            project.languages().add(Arc::new(rust_lang()))
5614        });
5615        let workspace = add_outline_panel(&project, cx).await;
5616        let cx = &mut VisualTestContext::from_window(*workspace, cx);
5617        let outline_panel = outline_panel(&workspace, cx);
5618        outline_panel.update_in(cx, |outline_panel, window, cx| {
5619            outline_panel.set_active(true, window, cx)
5620        });
5621
5622        workspace
5623            .update(cx, |workspace, window, cx| {
5624                ProjectSearchView::deploy_search(
5625                    workspace,
5626                    &workspace::DeploySearch::default(),
5627                    window,
5628                    cx,
5629                )
5630            })
5631            .unwrap();
5632        let search_view = workspace
5633            .update(cx, |workspace, _, cx| {
5634                workspace
5635                    .active_pane()
5636                    .read(cx)
5637                    .items()
5638                    .find_map(|item| item.downcast::<ProjectSearchView>())
5639                    .expect("Project search view expected to appear after new search event trigger")
5640            })
5641            .unwrap();
5642
5643        let query = "param_names_for_lifetime_elision_hints";
5644        perform_project_search(&search_view, query, cx);
5645        search_view.update(cx, |search_view, cx| {
5646            search_view
5647                .results_editor()
5648                .update(cx, |results_editor, cx| {
5649                    assert_eq!(
5650                        results_editor.display_text(cx).match_indices(query).count(),
5651                        9
5652                    );
5653                });
5654        });
5655        let all_matches = r#"rust-analyzer/
5656  crates/
5657    ide/src/
5658      inlay_hints/
5659        fn_lifetime_fn.rs
5660          search: match config.param_names_for_lifetime_elision_hints {
5661          search: allocated_lifetimes.push(if config.param_names_for_lifetime_elision_hints {
5662          search: Some(it) if config.param_names_for_lifetime_elision_hints => {
5663          search: InlayHintsConfig { param_names_for_lifetime_elision_hints: true, ..TEST_CONFIG },
5664      inlay_hints.rs
5665        search: pub param_names_for_lifetime_elision_hints: bool,
5666        search: param_names_for_lifetime_elision_hints: self
5667      static_index.rs
5668        search: param_names_for_lifetime_elision_hints: false,
5669    rust-analyzer/src/
5670      cli/
5671        analysis_stats.rs
5672          search: param_names_for_lifetime_elision_hints: true,
5673      config.rs
5674        search: param_names_for_lifetime_elision_hints: self"#
5675            .to_string();
5676        let select_first_in_all_matches = |line_to_select: &str| {
5677            assert!(all_matches.contains(line_to_select));
5678            all_matches.replacen(
5679                line_to_select,
5680                &format!("{line_to_select}{SELECTED_MARKER}"),
5681                1,
5682            )
5683        };
5684        cx.executor()
5685            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5686        cx.run_until_parked();
5687
5688        let active_editor = outline_panel.read_with(cx, |outline_panel, _| {
5689            outline_panel
5690                .active_editor()
5691                .expect("should have an active editor open")
5692        });
5693        let initial_outline_selection =
5694            "search: match config.param_names_for_lifetime_elision_hints {";
5695        outline_panel.update_in(cx, |outline_panel, window, cx| {
5696            assert_eq!(
5697                display_entries(
5698                    &project,
5699                    &snapshot(outline_panel, cx),
5700                    &outline_panel.cached_entries,
5701                    outline_panel.selected_entry(),
5702                    cx,
5703                ),
5704                select_first_in_all_matches(initial_outline_selection)
5705            );
5706            assert_eq!(
5707                selected_row_text(&active_editor, cx),
5708                initial_outline_selection.replace("search: ", ""), // Clear outline metadata prefixes
5709                "Should place the initial editor selection on the corresponding search result"
5710            );
5711
5712            outline_panel.select_next(&SelectNext, window, cx);
5713            outline_panel.select_next(&SelectNext, window, cx);
5714        });
5715
5716        let navigated_outline_selection =
5717            "search: Some(it) if config.param_names_for_lifetime_elision_hints => {";
5718        outline_panel.update(cx, |outline_panel, cx| {
5719            assert_eq!(
5720                display_entries(
5721                    &project,
5722                    &snapshot(outline_panel, cx),
5723                    &outline_panel.cached_entries,
5724                    outline_panel.selected_entry(),
5725                    cx,
5726                ),
5727                select_first_in_all_matches(navigated_outline_selection)
5728            );
5729        });
5730        cx.executor()
5731            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5732        outline_panel.update(cx, |_, cx| {
5733            assert_eq!(
5734                selected_row_text(&active_editor, cx),
5735                navigated_outline_selection.replace("search: ", ""), // Clear outline metadata prefixes
5736                "Should still have the initial caret position after SelectNext calls"
5737            );
5738        });
5739
5740        outline_panel.update_in(cx, |outline_panel, window, cx| {
5741            outline_panel.open_selected_entry(&OpenSelectedEntry, window, cx);
5742        });
5743        outline_panel.update(cx, |_outline_panel, cx| {
5744            assert_eq!(
5745                selected_row_text(&active_editor, cx),
5746                navigated_outline_selection.replace("search: ", ""), // Clear outline metadata prefixes
5747                "After opening, should move the caret to the opened outline entry's position"
5748            );
5749        });
5750
5751        outline_panel.update_in(cx, |outline_panel, window, cx| {
5752            outline_panel.select_next(&SelectNext, window, cx);
5753        });
5754        let next_navigated_outline_selection = "search: InlayHintsConfig { param_names_for_lifetime_elision_hints: true, ..TEST_CONFIG },";
5755        outline_panel.update(cx, |outline_panel, cx| {
5756            assert_eq!(
5757                display_entries(
5758                    &project,
5759                    &snapshot(outline_panel, cx),
5760                    &outline_panel.cached_entries,
5761                    outline_panel.selected_entry(),
5762                    cx,
5763                ),
5764                select_first_in_all_matches(next_navigated_outline_selection)
5765            );
5766        });
5767        cx.executor()
5768            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5769        outline_panel.update(cx, |_outline_panel, cx| {
5770            assert_eq!(
5771                selected_row_text(&active_editor, cx),
5772                next_navigated_outline_selection.replace("search: ", ""), // Clear outline metadata prefixes
5773                "Should again preserve the selection after another SelectNext call"
5774            );
5775        });
5776
5777        outline_panel.update_in(cx, |outline_panel, window, cx| {
5778            outline_panel.open_excerpts(&editor::actions::OpenExcerpts, window, cx);
5779        });
5780        cx.executor()
5781            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5782        cx.run_until_parked();
5783        let new_active_editor = outline_panel.read_with(cx, |outline_panel, _| {
5784            outline_panel
5785                .active_editor()
5786                .expect("should have an active editor open")
5787        });
5788        outline_panel.update(cx, |outline_panel, cx| {
5789            assert_ne!(
5790                active_editor, new_active_editor,
5791                "After opening an excerpt, new editor should be open"
5792            );
5793            assert_eq!(
5794                display_entries(
5795                    &project,
5796                    &snapshot(outline_panel, cx),
5797                    &outline_panel.cached_entries,
5798                    outline_panel.selected_entry(),
5799                    cx,
5800                ),
5801                "fn_lifetime_fn.rs  <==== selected"
5802            );
5803            assert_eq!(
5804                selected_row_text(&new_active_editor, cx),
5805                next_navigated_outline_selection.replace("search: ", ""), // Clear outline metadata prefixes
5806                "When opening the excerpt, should navigate to the place corresponding the outline entry"
5807            );
5808        });
5809    }
5810
5811    #[gpui::test]
5812    async fn test_multiple_workrees(cx: &mut TestAppContext) {
5813        init_test(cx);
5814
5815        let fs = FakeFs::new(cx.background_executor.clone());
5816        fs.insert_tree(
5817            path!("/root"),
5818            json!({
5819                "one": {
5820                    "a.txt": "aaa aaa"
5821                },
5822                "two": {
5823                    "b.txt": "a aaa"
5824                }
5825
5826            }),
5827        )
5828        .await;
5829        let project = Project::test(fs.clone(), [Path::new(path!("/root/one"))], cx).await;
5830        let workspace = add_outline_panel(&project, cx).await;
5831        let cx = &mut VisualTestContext::from_window(*workspace, cx);
5832        let outline_panel = outline_panel(&workspace, cx);
5833        outline_panel.update_in(cx, |outline_panel, window, cx| {
5834            outline_panel.set_active(true, window, cx)
5835        });
5836
5837        let items = workspace
5838            .update(cx, |workspace, window, cx| {
5839                workspace.open_paths(
5840                    vec![PathBuf::from(path!("/root/two"))],
5841                    OpenOptions {
5842                        visible: Some(OpenVisible::OnlyDirectories),
5843                        ..Default::default()
5844                    },
5845                    None,
5846                    window,
5847                    cx,
5848                )
5849            })
5850            .unwrap()
5851            .await;
5852        assert_eq!(items.len(), 1, "Were opening another worktree directory");
5853        assert!(
5854            items[0].is_none(),
5855            "Directory should be opened successfully"
5856        );
5857
5858        workspace
5859            .update(cx, |workspace, window, cx| {
5860                ProjectSearchView::deploy_search(
5861                    workspace,
5862                    &workspace::DeploySearch::default(),
5863                    window,
5864                    cx,
5865                )
5866            })
5867            .unwrap();
5868        let search_view = workspace
5869            .update(cx, |workspace, _, cx| {
5870                workspace
5871                    .active_pane()
5872                    .read(cx)
5873                    .items()
5874                    .find_map(|item| item.downcast::<ProjectSearchView>())
5875                    .expect("Project search view expected to appear after new search event trigger")
5876            })
5877            .unwrap();
5878
5879        let query = "aaa";
5880        perform_project_search(&search_view, query, cx);
5881        search_view.update(cx, |search_view, cx| {
5882            search_view
5883                .results_editor()
5884                .update(cx, |results_editor, cx| {
5885                    assert_eq!(
5886                        results_editor.display_text(cx).match_indices(query).count(),
5887                        3
5888                    );
5889                });
5890        });
5891
5892        cx.executor()
5893            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5894        cx.run_until_parked();
5895        outline_panel.update(cx, |outline_panel, cx| {
5896            assert_eq!(
5897                display_entries(
5898                    &project,
5899                    &snapshot(outline_panel, cx),
5900                    &outline_panel.cached_entries,
5901                    outline_panel.selected_entry(),
5902                    cx,
5903                ),
5904                format!(
5905                    r#"one/
5906  a.txt
5907    search: aaa aaa  <==== selected
5908    search: aaa aaa
5909two/
5910  b.txt
5911    search: a aaa"#,
5912                ),
5913            );
5914        });
5915
5916        outline_panel.update_in(cx, |outline_panel, window, cx| {
5917            outline_panel.select_previous(&SelectPrevious, window, cx);
5918            outline_panel.open_selected_entry(&OpenSelectedEntry, window, cx);
5919        });
5920        cx.executor()
5921            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5922        cx.run_until_parked();
5923        outline_panel.update(cx, |outline_panel, cx| {
5924            assert_eq!(
5925                display_entries(
5926                    &project,
5927                    &snapshot(outline_panel, cx),
5928                    &outline_panel.cached_entries,
5929                    outline_panel.selected_entry(),
5930                    cx,
5931                ),
5932                format!(
5933                    r#"one/
5934  a.txt  <==== selected
5935two/
5936  b.txt
5937    search: a aaa"#,
5938                ),
5939            );
5940        });
5941
5942        outline_panel.update_in(cx, |outline_panel, window, cx| {
5943            outline_panel.select_next(&SelectNext, window, cx);
5944            outline_panel.open_selected_entry(&OpenSelectedEntry, window, cx);
5945        });
5946        cx.executor()
5947            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5948        cx.run_until_parked();
5949        outline_panel.update(cx, |outline_panel, cx| {
5950            assert_eq!(
5951                display_entries(
5952                    &project,
5953                    &snapshot(outline_panel, cx),
5954                    &outline_panel.cached_entries,
5955                    outline_panel.selected_entry(),
5956                    cx,
5957                ),
5958                format!(
5959                    r#"one/
5960  a.txt
5961two/  <==== selected"#,
5962                ),
5963            );
5964        });
5965
5966        outline_panel.update_in(cx, |outline_panel, window, cx| {
5967            outline_panel.open_selected_entry(&OpenSelectedEntry, window, cx);
5968        });
5969        cx.executor()
5970            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5971        cx.run_until_parked();
5972        outline_panel.update(cx, |outline_panel, cx| {
5973            assert_eq!(
5974                display_entries(
5975                    &project,
5976                    &snapshot(outline_panel, cx),
5977                    &outline_panel.cached_entries,
5978                    outline_panel.selected_entry(),
5979                    cx,
5980                ),
5981                format!(
5982                    r#"one/
5983  a.txt
5984two/  <==== selected
5985  b.txt
5986    search: a aaa"#,
5987                )
5988            );
5989        });
5990    }
5991
5992    #[gpui::test]
5993    async fn test_navigating_in_singleton(cx: &mut TestAppContext) {
5994        init_test(cx);
5995
5996        let root = path!("/root");
5997        let fs = FakeFs::new(cx.background_executor.clone());
5998        fs.insert_tree(
5999            root,
6000            json!({
6001                "src": {
6002                    "lib.rs": indoc!("
6003#[derive(Clone, Debug, PartialEq, Eq, Hash)]
6004struct OutlineEntryExcerpt {
6005    id: ExcerptId,
6006    buffer_id: BufferId,
6007    range: ExcerptRange<language::Anchor>,
6008}"),
6009                }
6010            }),
6011        )
6012        .await;
6013        let project = Project::test(fs.clone(), [Path::new(root)], cx).await;
6014        project.read_with(cx, |project, _| {
6015            project.languages().add(Arc::new(
6016                rust_lang()
6017                    .with_outline_query(
6018                        r#"
6019                (struct_item
6020                    (visibility_modifier)? @context
6021                    "struct" @context
6022                    name: (_) @name) @item
6023
6024                (field_declaration
6025                    (visibility_modifier)? @context
6026                    name: (_) @name) @item
6027"#,
6028                    )
6029                    .unwrap(),
6030            ))
6031        });
6032        let workspace = add_outline_panel(&project, cx).await;
6033        let cx = &mut VisualTestContext::from_window(*workspace, cx);
6034        let outline_panel = outline_panel(&workspace, cx);
6035        cx.update(|window, cx| {
6036            outline_panel.update(cx, |outline_panel, cx| {
6037                outline_panel.set_active(true, window, cx)
6038            });
6039        });
6040
6041        let _editor = workspace
6042            .update(cx, |workspace, window, cx| {
6043                workspace.open_abs_path(
6044                    PathBuf::from(path!("/root/src/lib.rs")),
6045                    OpenOptions {
6046                        visible: Some(OpenVisible::All),
6047                        ..Default::default()
6048                    },
6049                    window,
6050                    cx,
6051                )
6052            })
6053            .unwrap()
6054            .await
6055            .expect("Failed to open Rust source file")
6056            .downcast::<Editor>()
6057            .expect("Should open an editor for Rust source file");
6058
6059        cx.executor()
6060            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6061        cx.run_until_parked();
6062        outline_panel.update(cx, |outline_panel, cx| {
6063            assert_eq!(
6064                display_entries(
6065                    &project,
6066                    &snapshot(outline_panel, cx),
6067                    &outline_panel.cached_entries,
6068                    outline_panel.selected_entry(),
6069                    cx,
6070                ),
6071                indoc!(
6072                    "
6073outline: struct OutlineEntryExcerpt
6074  outline: id
6075  outline: buffer_id
6076  outline: range"
6077                )
6078            );
6079        });
6080
6081        cx.update(|window, cx| {
6082            outline_panel.update(cx, |outline_panel, cx| {
6083                outline_panel.select_next(&SelectNext, window, cx);
6084            });
6085        });
6086        cx.executor()
6087            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6088        cx.run_until_parked();
6089        outline_panel.update(cx, |outline_panel, cx| {
6090            assert_eq!(
6091                display_entries(
6092                    &project,
6093                    &snapshot(outline_panel, cx),
6094                    &outline_panel.cached_entries,
6095                    outline_panel.selected_entry(),
6096                    cx,
6097                ),
6098                indoc!(
6099                    "
6100outline: struct OutlineEntryExcerpt  <==== selected
6101  outline: id
6102  outline: buffer_id
6103  outline: range"
6104                )
6105            );
6106        });
6107
6108        cx.update(|window, cx| {
6109            outline_panel.update(cx, |outline_panel, cx| {
6110                outline_panel.select_next(&SelectNext, window, cx);
6111            });
6112        });
6113        cx.executor()
6114            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6115        cx.run_until_parked();
6116        outline_panel.update(cx, |outline_panel, cx| {
6117            assert_eq!(
6118                display_entries(
6119                    &project,
6120                    &snapshot(outline_panel, cx),
6121                    &outline_panel.cached_entries,
6122                    outline_panel.selected_entry(),
6123                    cx,
6124                ),
6125                indoc!(
6126                    "
6127outline: struct OutlineEntryExcerpt
6128  outline: id  <==== selected
6129  outline: buffer_id
6130  outline: range"
6131                )
6132            );
6133        });
6134
6135        cx.update(|window, cx| {
6136            outline_panel.update(cx, |outline_panel, cx| {
6137                outline_panel.select_next(&SelectNext, window, cx);
6138            });
6139        });
6140        cx.executor()
6141            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6142        cx.run_until_parked();
6143        outline_panel.update(cx, |outline_panel, cx| {
6144            assert_eq!(
6145                display_entries(
6146                    &project,
6147                    &snapshot(outline_panel, cx),
6148                    &outline_panel.cached_entries,
6149                    outline_panel.selected_entry(),
6150                    cx,
6151                ),
6152                indoc!(
6153                    "
6154outline: struct OutlineEntryExcerpt
6155  outline: id
6156  outline: buffer_id  <==== selected
6157  outline: range"
6158                )
6159            );
6160        });
6161
6162        cx.update(|window, cx| {
6163            outline_panel.update(cx, |outline_panel, cx| {
6164                outline_panel.select_next(&SelectNext, window, cx);
6165            });
6166        });
6167        cx.executor()
6168            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6169        cx.run_until_parked();
6170        outline_panel.update(cx, |outline_panel, cx| {
6171            assert_eq!(
6172                display_entries(
6173                    &project,
6174                    &snapshot(outline_panel, cx),
6175                    &outline_panel.cached_entries,
6176                    outline_panel.selected_entry(),
6177                    cx,
6178                ),
6179                indoc!(
6180                    "
6181outline: struct OutlineEntryExcerpt
6182  outline: id
6183  outline: buffer_id
6184  outline: range  <==== selected"
6185                )
6186            );
6187        });
6188
6189        cx.update(|window, cx| {
6190            outline_panel.update(cx, |outline_panel, cx| {
6191                outline_panel.select_next(&SelectNext, window, cx);
6192            });
6193        });
6194        cx.executor()
6195            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6196        cx.run_until_parked();
6197        outline_panel.update(cx, |outline_panel, cx| {
6198            assert_eq!(
6199                display_entries(
6200                    &project,
6201                    &snapshot(outline_panel, cx),
6202                    &outline_panel.cached_entries,
6203                    outline_panel.selected_entry(),
6204                    cx,
6205                ),
6206                indoc!(
6207                    "
6208outline: struct OutlineEntryExcerpt  <==== selected
6209  outline: id
6210  outline: buffer_id
6211  outline: range"
6212                )
6213            );
6214        });
6215
6216        cx.update(|window, cx| {
6217            outline_panel.update(cx, |outline_panel, cx| {
6218                outline_panel.select_previous(&SelectPrevious, window, cx);
6219            });
6220        });
6221        cx.executor()
6222            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6223        cx.run_until_parked();
6224        outline_panel.update(cx, |outline_panel, cx| {
6225            assert_eq!(
6226                display_entries(
6227                    &project,
6228                    &snapshot(outline_panel, cx),
6229                    &outline_panel.cached_entries,
6230                    outline_panel.selected_entry(),
6231                    cx,
6232                ),
6233                indoc!(
6234                    "
6235outline: struct OutlineEntryExcerpt
6236  outline: id
6237  outline: buffer_id
6238  outline: range  <==== selected"
6239                )
6240            );
6241        });
6242
6243        cx.update(|window, cx| {
6244            outline_panel.update(cx, |outline_panel, cx| {
6245                outline_panel.select_previous(&SelectPrevious, window, cx);
6246            });
6247        });
6248        cx.executor()
6249            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6250        cx.run_until_parked();
6251        outline_panel.update(cx, |outline_panel, cx| {
6252            assert_eq!(
6253                display_entries(
6254                    &project,
6255                    &snapshot(outline_panel, cx),
6256                    &outline_panel.cached_entries,
6257                    outline_panel.selected_entry(),
6258                    cx,
6259                ),
6260                indoc!(
6261                    "
6262outline: struct OutlineEntryExcerpt
6263  outline: id
6264  outline: buffer_id  <==== selected
6265  outline: range"
6266                )
6267            );
6268        });
6269
6270        cx.update(|window, cx| {
6271            outline_panel.update(cx, |outline_panel, cx| {
6272                outline_panel.select_previous(&SelectPrevious, window, cx);
6273            });
6274        });
6275        cx.executor()
6276            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6277        cx.run_until_parked();
6278        outline_panel.update(cx, |outline_panel, cx| {
6279            assert_eq!(
6280                display_entries(
6281                    &project,
6282                    &snapshot(outline_panel, cx),
6283                    &outline_panel.cached_entries,
6284                    outline_panel.selected_entry(),
6285                    cx,
6286                ),
6287                indoc!(
6288                    "
6289outline: struct OutlineEntryExcerpt
6290  outline: id  <==== selected
6291  outline: buffer_id
6292  outline: range"
6293                )
6294            );
6295        });
6296
6297        cx.update(|window, cx| {
6298            outline_panel.update(cx, |outline_panel, cx| {
6299                outline_panel.select_previous(&SelectPrevious, window, cx);
6300            });
6301        });
6302        cx.executor()
6303            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6304        cx.run_until_parked();
6305        outline_panel.update(cx, |outline_panel, cx| {
6306            assert_eq!(
6307                display_entries(
6308                    &project,
6309                    &snapshot(outline_panel, cx),
6310                    &outline_panel.cached_entries,
6311                    outline_panel.selected_entry(),
6312                    cx,
6313                ),
6314                indoc!(
6315                    "
6316outline: struct OutlineEntryExcerpt  <==== selected
6317  outline: id
6318  outline: buffer_id
6319  outline: range"
6320                )
6321            );
6322        });
6323
6324        cx.update(|window, cx| {
6325            outline_panel.update(cx, |outline_panel, cx| {
6326                outline_panel.select_previous(&SelectPrevious, window, cx);
6327            });
6328        });
6329        cx.executor()
6330            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6331        cx.run_until_parked();
6332        outline_panel.update(cx, |outline_panel, cx| {
6333            assert_eq!(
6334                display_entries(
6335                    &project,
6336                    &snapshot(outline_panel, cx),
6337                    &outline_panel.cached_entries,
6338                    outline_panel.selected_entry(),
6339                    cx,
6340                ),
6341                indoc!(
6342                    "
6343outline: struct OutlineEntryExcerpt
6344  outline: id
6345  outline: buffer_id
6346  outline: range  <==== selected"
6347                )
6348            );
6349        });
6350    }
6351
6352    #[gpui::test(iterations = 10)]
6353    async fn test_frontend_repo_structure(cx: &mut TestAppContext) {
6354        init_test(cx);
6355
6356        let root = path!("/frontend-project");
6357        let fs = FakeFs::new(cx.background_executor.clone());
6358        fs.insert_tree(
6359            root,
6360            json!({
6361                "public": {
6362                    "lottie": {
6363                        "syntax-tree.json": r#"{ "something": "static" }"#
6364                    }
6365                },
6366                "src": {
6367                    "app": {
6368                        "(site)": {
6369                            "(about)": {
6370                                "jobs": {
6371                                    "[slug]": {
6372                                        "page.tsx": r#"static"#
6373                                    }
6374                                }
6375                            },
6376                            "(blog)": {
6377                                "post": {
6378                                    "[slug]": {
6379                                        "page.tsx": r#"static"#
6380                                    }
6381                                }
6382                            },
6383                        }
6384                    },
6385                    "components": {
6386                        "ErrorBoundary.tsx": r#"static"#,
6387                    }
6388                }
6389
6390            }),
6391        )
6392        .await;
6393        let project = Project::test(fs.clone(), [Path::new(root)], cx).await;
6394        let workspace = add_outline_panel(&project, cx).await;
6395        let cx = &mut VisualTestContext::from_window(*workspace, cx);
6396        let outline_panel = outline_panel(&workspace, cx);
6397        outline_panel.update_in(cx, |outline_panel, window, cx| {
6398            outline_panel.set_active(true, window, cx)
6399        });
6400
6401        workspace
6402            .update(cx, |workspace, window, cx| {
6403                ProjectSearchView::deploy_search(
6404                    workspace,
6405                    &workspace::DeploySearch::default(),
6406                    window,
6407                    cx,
6408                )
6409            })
6410            .unwrap();
6411        let search_view = workspace
6412            .update(cx, |workspace, _, cx| {
6413                workspace
6414                    .active_pane()
6415                    .read(cx)
6416                    .items()
6417                    .find_map(|item| item.downcast::<ProjectSearchView>())
6418                    .expect("Project search view expected to appear after new search event trigger")
6419            })
6420            .unwrap();
6421
6422        let query = "static";
6423        perform_project_search(&search_view, query, cx);
6424        search_view.update(cx, |search_view, cx| {
6425            search_view
6426                .results_editor()
6427                .update(cx, |results_editor, cx| {
6428                    assert_eq!(
6429                        results_editor.display_text(cx).match_indices(query).count(),
6430                        4
6431                    );
6432                });
6433        });
6434
6435        cx.executor()
6436            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6437        cx.run_until_parked();
6438        outline_panel.update(cx, |outline_panel, cx| {
6439            assert_eq!(
6440                display_entries(
6441                    &project,
6442                    &snapshot(outline_panel, cx),
6443                    &outline_panel.cached_entries,
6444                    outline_panel.selected_entry(),
6445                    cx,
6446                ),
6447                format!(
6448                    r#"frontend-project/
6449  public/lottie/
6450    syntax-tree.json
6451      search: {{ "something": "static" }}  <==== selected
6452  src/
6453    app/(site)/
6454      (about)/jobs/[slug]/
6455        page.tsx
6456          search: static
6457      (blog)/post/[slug]/
6458        page.tsx
6459          search: static
6460    components/
6461      ErrorBoundary.tsx
6462        search: static"#
6463                )
6464            );
6465        });
6466
6467        outline_panel.update_in(cx, |outline_panel, window, cx| {
6468            // Move to 5th element in the list, 3 items down.
6469            for _ in 0..2 {
6470                outline_panel.select_next(&SelectNext, window, cx);
6471            }
6472            outline_panel.collapse_selected_entry(&CollapseSelectedEntry, window, cx);
6473        });
6474        cx.executor()
6475            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6476        cx.run_until_parked();
6477        outline_panel.update(cx, |outline_panel, cx| {
6478            assert_eq!(
6479                display_entries(
6480                    &project,
6481                    &snapshot(outline_panel, cx),
6482                    &outline_panel.cached_entries,
6483                    outline_panel.selected_entry(),
6484                    cx,
6485                ),
6486                format!(
6487                    r#"frontend-project/
6488  public/lottie/
6489    syntax-tree.json
6490      search: {{ "something": "static" }}
6491  src/
6492    app/(site)/  <==== selected
6493    components/
6494      ErrorBoundary.tsx
6495        search: static"#
6496                )
6497            );
6498        });
6499
6500        outline_panel.update_in(cx, |outline_panel, window, cx| {
6501            // Move to the next visible non-FS entry
6502            for _ in 0..3 {
6503                outline_panel.select_next(&SelectNext, window, cx);
6504            }
6505        });
6506        cx.run_until_parked();
6507        outline_panel.update(cx, |outline_panel, cx| {
6508            assert_eq!(
6509                display_entries(
6510                    &project,
6511                    &snapshot(outline_panel, cx),
6512                    &outline_panel.cached_entries,
6513                    outline_panel.selected_entry(),
6514                    cx,
6515                ),
6516                format!(
6517                    r#"frontend-project/
6518  public/lottie/
6519    syntax-tree.json
6520      search: {{ "something": "static" }}
6521  src/
6522    app/(site)/
6523    components/
6524      ErrorBoundary.tsx
6525        search: static  <==== selected"#
6526                )
6527            );
6528        });
6529
6530        outline_panel.update_in(cx, |outline_panel, window, cx| {
6531            outline_panel
6532                .active_editor()
6533                .expect("Should have an active editor")
6534                .update(cx, |editor, cx| {
6535                    editor.toggle_fold(&editor::actions::ToggleFold, window, cx)
6536                });
6537        });
6538        cx.executor()
6539            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6540        cx.run_until_parked();
6541        outline_panel.update(cx, |outline_panel, cx| {
6542            assert_eq!(
6543                display_entries(
6544                    &project,
6545                    &snapshot(outline_panel, cx),
6546                    &outline_panel.cached_entries,
6547                    outline_panel.selected_entry(),
6548                    cx,
6549                ),
6550                format!(
6551                    r#"frontend-project/
6552  public/lottie/
6553    syntax-tree.json
6554      search: {{ "something": "static" }}
6555  src/
6556    app/(site)/
6557    components/
6558      ErrorBoundary.tsx  <==== selected"#
6559                )
6560            );
6561        });
6562
6563        outline_panel.update_in(cx, |outline_panel, window, cx| {
6564            outline_panel
6565                .active_editor()
6566                .expect("Should have an active editor")
6567                .update(cx, |editor, cx| {
6568                    editor.toggle_fold(&editor::actions::ToggleFold, window, cx)
6569                });
6570        });
6571        cx.executor()
6572            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6573        cx.run_until_parked();
6574        outline_panel.update(cx, |outline_panel, cx| {
6575            assert_eq!(
6576                display_entries(
6577                    &project,
6578                    &snapshot(outline_panel, cx),
6579                    &outline_panel.cached_entries,
6580                    outline_panel.selected_entry(),
6581                    cx,
6582                ),
6583                format!(
6584                    r#"frontend-project/
6585  public/lottie/
6586    syntax-tree.json
6587      search: {{ "something": "static" }}
6588  src/
6589    app/(site)/
6590    components/
6591      ErrorBoundary.tsx  <==== selected
6592        search: static"#
6593                )
6594            );
6595        });
6596    }
6597
6598    async fn add_outline_panel(
6599        project: &Entity<Project>,
6600        cx: &mut TestAppContext,
6601    ) -> WindowHandle<Workspace> {
6602        let window = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
6603
6604        let outline_panel = window
6605            .update(cx, |_, window, cx| {
6606                cx.spawn_in(window, async |this, cx| {
6607                    OutlinePanel::load(this, cx.clone()).await
6608                })
6609            })
6610            .unwrap()
6611            .await
6612            .expect("Failed to load outline panel");
6613
6614        window
6615            .update(cx, |workspace, window, cx| {
6616                workspace.add_panel(outline_panel, window, cx);
6617            })
6618            .unwrap();
6619        window
6620    }
6621
6622    fn outline_panel(
6623        workspace: &WindowHandle<Workspace>,
6624        cx: &mut TestAppContext,
6625    ) -> Entity<OutlinePanel> {
6626        workspace
6627            .update(cx, |workspace, _, cx| {
6628                workspace
6629                    .panel::<OutlinePanel>(cx)
6630                    .expect("no outline panel")
6631            })
6632            .unwrap()
6633    }
6634
6635    fn display_entries(
6636        project: &Entity<Project>,
6637        multi_buffer_snapshot: &MultiBufferSnapshot,
6638        cached_entries: &[CachedEntry],
6639        selected_entry: Option<&PanelEntry>,
6640        cx: &mut App,
6641    ) -> String {
6642        let project = project.read(cx);
6643        let mut display_string = String::new();
6644        for entry in cached_entries {
6645            if !display_string.is_empty() {
6646                display_string += "\n";
6647            }
6648            for _ in 0..entry.depth {
6649                display_string += "  ";
6650            }
6651            display_string += &match &entry.entry {
6652                PanelEntry::Fs(entry) => match entry {
6653                    FsEntry::ExternalFile(_) => {
6654                        panic!("Did not cover external files with tests")
6655                    }
6656                    FsEntry::Directory(directory) => {
6657                        let path = if let Some(worktree) = project
6658                            .worktree_for_id(directory.worktree_id, cx)
6659                            .filter(|worktree| {
6660                                worktree.read(cx).root_entry() == Some(&directory.entry.entry)
6661                            }) {
6662                            worktree
6663                                .read(cx)
6664                                .root_name()
6665                                .join(&directory.entry.path)
6666                                .as_unix_str()
6667                                .to_string()
6668                        } else {
6669                            directory
6670                                .entry
6671                                .path
6672                                .file_name()
6673                                .unwrap_or_default()
6674                                .to_string()
6675                        };
6676                        format!("{path}/")
6677                    }
6678                    FsEntry::File(file) => file
6679                        .entry
6680                        .path
6681                        .file_name()
6682                        .map(|name| name.to_string())
6683                        .unwrap_or_default(),
6684                },
6685                PanelEntry::FoldedDirs(folded_dirs) => folded_dirs
6686                    .entries
6687                    .iter()
6688                    .filter_map(|dir| dir.path.file_name())
6689                    .map(|name| name.to_string() + "/")
6690                    .collect(),
6691                PanelEntry::Outline(outline_entry) => match outline_entry {
6692                    OutlineEntry::Excerpt(_) => continue,
6693                    OutlineEntry::Outline(outline_entry) => {
6694                        format!("outline: {}", outline_entry.outline.text)
6695                    }
6696                },
6697                PanelEntry::Search(search_entry) => {
6698                    format!(
6699                        "search: {}",
6700                        search_entry
6701                            .render_data
6702                            .get_or_init(|| SearchData::new(
6703                                &search_entry.match_range,
6704                                multi_buffer_snapshot
6705                            ))
6706                            .context_text
6707                    )
6708                }
6709            };
6710
6711            if Some(&entry.entry) == selected_entry {
6712                display_string += SELECTED_MARKER;
6713            }
6714        }
6715        display_string
6716    }
6717
6718    fn init_test(cx: &mut TestAppContext) {
6719        cx.update(|cx| {
6720            let settings = SettingsStore::test(cx);
6721            cx.set_global(settings);
6722
6723            theme::init(theme::LoadThemes::JustBase, cx);
6724
6725            language::init(cx);
6726            editor::init(cx);
6727            workspace::init_settings(cx);
6728            Project::init_settings(cx);
6729            project_search::init(cx);
6730            super::init(cx);
6731        });
6732    }
6733
6734    // Based on https://github.com/rust-lang/rust-analyzer/
6735    async fn populate_with_test_ra_project(fs: &FakeFs, root: &str) {
6736        fs.insert_tree(
6737            root,
6738            json!({
6739                    "crates": {
6740                        "ide": {
6741                            "src": {
6742                                "inlay_hints": {
6743                                    "fn_lifetime_fn.rs": r##"
6744        pub(super) fn hints(
6745            acc: &mut Vec<InlayHint>,
6746            config: &InlayHintsConfig,
6747            func: ast::Fn,
6748        ) -> Option<()> {
6749            // ... snip
6750
6751            let mut used_names: FxHashMap<SmolStr, usize> =
6752                match config.param_names_for_lifetime_elision_hints {
6753                    true => generic_param_list
6754                        .iter()
6755                        .flat_map(|gpl| gpl.lifetime_params())
6756                        .filter_map(|param| param.lifetime())
6757                        .filter_map(|lt| Some((SmolStr::from(lt.text().as_str().get(1..)?), 0)))
6758                        .collect(),
6759                    false => Default::default(),
6760                };
6761            {
6762                let mut potential_lt_refs = potential_lt_refs.iter().filter(|&&(.., is_elided)| is_elided);
6763                if self_param.is_some() && potential_lt_refs.next().is_some() {
6764                    allocated_lifetimes.push(if config.param_names_for_lifetime_elision_hints {
6765                        // self can't be used as a lifetime, so no need to check for collisions
6766                        "'self".into()
6767                    } else {
6768                        gen_idx_name()
6769                    });
6770                }
6771                potential_lt_refs.for_each(|(name, ..)| {
6772                    let name = match name {
6773                        Some(it) if config.param_names_for_lifetime_elision_hints => {
6774                            if let Some(c) = used_names.get_mut(it.text().as_str()) {
6775                                *c += 1;
6776                                SmolStr::from(format!("'{text}{c}", text = it.text().as_str()))
6777                            } else {
6778                                used_names.insert(it.text().as_str().into(), 0);
6779                                SmolStr::from_iter(["\'", it.text().as_str()])
6780                            }
6781                        }
6782                        _ => gen_idx_name(),
6783                    };
6784                    allocated_lifetimes.push(name);
6785                });
6786            }
6787
6788            // ... snip
6789        }
6790
6791        // ... snip
6792
6793            #[test]
6794            fn hints_lifetimes_named() {
6795                check_with_config(
6796                    InlayHintsConfig { param_names_for_lifetime_elision_hints: true, ..TEST_CONFIG },
6797                    r#"
6798        fn nested_in<'named>(named: &        &X<      &()>) {}
6799        //          ^'named1, 'named2, 'named3, $
6800                                  //^'named1 ^'named2 ^'named3
6801        "#,
6802                );
6803            }
6804
6805        // ... snip
6806        "##,
6807                                },
6808                        "inlay_hints.rs": r#"
6809    #[derive(Clone, Debug, PartialEq, Eq)]
6810    pub struct InlayHintsConfig {
6811        // ... snip
6812        pub param_names_for_lifetime_elision_hints: bool,
6813        pub max_length: Option<usize>,
6814        // ... snip
6815    }
6816
6817    impl Config {
6818        pub fn inlay_hints(&self) -> InlayHintsConfig {
6819            InlayHintsConfig {
6820                // ... snip
6821                param_names_for_lifetime_elision_hints: self
6822                    .inlayHints_lifetimeElisionHints_useParameterNames()
6823                    .to_owned(),
6824                max_length: self.inlayHints_maxLength().to_owned(),
6825                // ... snip
6826            }
6827        }
6828    }
6829    "#,
6830                        "static_index.rs": r#"
6831// ... snip
6832        fn add_file(&mut self, file_id: FileId) {
6833            let current_crate = crates_for(self.db, file_id).pop().map(Into::into);
6834            let folds = self.analysis.folding_ranges(file_id).unwrap();
6835            let inlay_hints = self
6836                .analysis
6837                .inlay_hints(
6838                    &InlayHintsConfig {
6839                        // ... snip
6840                        closure_style: hir::ClosureStyle::ImplFn,
6841                        param_names_for_lifetime_elision_hints: false,
6842                        binding_mode_hints: false,
6843                        max_length: Some(25),
6844                        closure_capture_hints: false,
6845                        // ... snip
6846                    },
6847                    file_id,
6848                    None,
6849                )
6850                .unwrap();
6851            // ... snip
6852    }
6853// ... snip
6854    "#
6855                            }
6856                        },
6857                        "rust-analyzer": {
6858                            "src": {
6859                                "cli": {
6860                                    "analysis_stats.rs": r#"
6861        // ... snip
6862                for &file_id in &file_ids {
6863                    _ = analysis.inlay_hints(
6864                        &InlayHintsConfig {
6865                            // ... snip
6866                            implicit_drop_hints: true,
6867                            lifetime_elision_hints: ide::LifetimeElisionHints::Always,
6868                            param_names_for_lifetime_elision_hints: true,
6869                            hide_named_constructor_hints: false,
6870                            hide_closure_initialization_hints: false,
6871                            closure_style: hir::ClosureStyle::ImplFn,
6872                            max_length: Some(25),
6873                            closing_brace_hints_min_lines: Some(20),
6874                            fields_to_resolve: InlayFieldsToResolve::empty(),
6875                            range_exclusive_hints: true,
6876                        },
6877                        file_id.into(),
6878                        None,
6879                    );
6880                }
6881        // ... snip
6882                                    "#,
6883                                },
6884                                "config.rs": r#"
6885                config_data! {
6886                    /// Configs that only make sense when they are set by a client. As such they can only be defined
6887                    /// by setting them using client's settings (e.g `settings.json` on VS Code).
6888                    client: struct ClientDefaultConfigData <- ClientConfigInput -> {
6889                        // ... snip
6890                        /// Maximum length for inlay hints. Set to null to have an unlimited length.
6891                        inlayHints_maxLength: Option<usize>                        = Some(25),
6892                        // ... snip
6893                        /// Whether to prefer using parameter names as the name for elided lifetime hints if possible.
6894                        inlayHints_lifetimeElisionHints_useParameterNames: bool    = false,
6895                        // ... snip
6896                    }
6897                }
6898
6899                impl Config {
6900                    // ... snip
6901                    pub fn inlay_hints(&self) -> InlayHintsConfig {
6902                        InlayHintsConfig {
6903                            // ... snip
6904                            param_names_for_lifetime_elision_hints: self
6905                                .inlayHints_lifetimeElisionHints_useParameterNames()
6906                                .to_owned(),
6907                            max_length: self.inlayHints_maxLength().to_owned(),
6908                            // ... snip
6909                        }
6910                    }
6911                    // ... snip
6912                }
6913                "#
6914                                }
6915                        }
6916                    }
6917            }),
6918        )
6919        .await;
6920    }
6921
6922    fn rust_lang() -> Language {
6923        Language::new(
6924            LanguageConfig {
6925                name: "Rust".into(),
6926                matcher: LanguageMatcher {
6927                    path_suffixes: vec!["rs".to_string()],
6928                    ..Default::default()
6929                },
6930                ..Default::default()
6931            },
6932            Some(tree_sitter_rust::LANGUAGE.into()),
6933        )
6934        .with_highlights_query(
6935            r#"
6936                (field_identifier) @field
6937                (struct_expression) @struct
6938            "#,
6939        )
6940        .unwrap()
6941        .with_injection_query(
6942            r#"
6943                (macro_invocation
6944                    (token_tree) @injection.content
6945                    (#set! injection.language "rust"))
6946            "#,
6947        )
6948        .unwrap()
6949    }
6950
6951    fn snapshot(outline_panel: &OutlinePanel, cx: &App) -> MultiBufferSnapshot {
6952        outline_panel
6953            .active_editor()
6954            .unwrap()
6955            .read(cx)
6956            .buffer()
6957            .read(cx)
6958            .snapshot(cx)
6959    }
6960
6961    fn selected_row_text(editor: &Entity<Editor>, cx: &mut App) -> String {
6962        editor.update(cx, |editor, cx| {
6963            let selections = editor.selections.all::<language::Point>(&editor.display_snapshot(cx));
6964            assert_eq!(selections.len(), 1, "Active editor should have exactly one selection after any outline panel interactions");
6965            let selection = selections.first().unwrap();
6966            let multi_buffer_snapshot = editor.buffer().read(cx).snapshot(cx);
6967            let line_start = language::Point::new(selection.start.row, 0);
6968            let line_end = multi_buffer_snapshot.clip_point(language::Point::new(selection.end.row, u32::MAX), language::Bias::Right);
6969            multi_buffer_snapshot.text_for_range(line_start..line_end).collect::<String>().trim().to_owned()
6970        })
6971    }
6972
6973    #[gpui::test]
6974    async fn test_outline_keyboard_expand_collapse(cx: &mut TestAppContext) {
6975        init_test(cx);
6976
6977        let fs = FakeFs::new(cx.background_executor.clone());
6978        fs.insert_tree(
6979            "/test",
6980            json!({
6981                "src": {
6982                    "lib.rs": indoc!("
6983                            mod outer {
6984                                pub struct OuterStruct {
6985                                    field: String,
6986                                }
6987                                impl OuterStruct {
6988                                    pub fn new() -> Self {
6989                                        Self { field: String::new() }
6990                                    }
6991                                    pub fn method(&self) {
6992                                        println!(\"{}\", self.field);
6993                                    }
6994                                }
6995                                mod inner {
6996                                    pub fn inner_function() {
6997                                        let x = 42;
6998                                        println!(\"{}\", x);
6999                                    }
7000                                    pub struct InnerStruct {
7001                                        value: i32,
7002                                    }
7003                                }
7004                            }
7005                            fn main() {
7006                                let s = outer::OuterStruct::new();
7007                                s.method();
7008                            }
7009                        "),
7010                }
7011            }),
7012        )
7013        .await;
7014
7015        let project = Project::test(fs.clone(), ["/test".as_ref()], cx).await;
7016        project.read_with(cx, |project, _| {
7017            project.languages().add(Arc::new(
7018                rust_lang()
7019                    .with_outline_query(
7020                        r#"
7021                            (struct_item
7022                                (visibility_modifier)? @context
7023                                "struct" @context
7024                                name: (_) @name) @item
7025                            (impl_item
7026                                "impl" @context
7027                                trait: (_)? @context
7028                                "for"? @context
7029                                type: (_) @context
7030                                body: (_)) @item
7031                            (function_item
7032                                (visibility_modifier)? @context
7033                                "fn" @context
7034                                name: (_) @name
7035                                parameters: (_) @context) @item
7036                            (mod_item
7037                                (visibility_modifier)? @context
7038                                "mod" @context
7039                                name: (_) @name) @item
7040                            (enum_item
7041                                (visibility_modifier)? @context
7042                                "enum" @context
7043                                name: (_) @name) @item
7044                            (field_declaration
7045                                (visibility_modifier)? @context
7046                                name: (_) @name
7047                                ":" @context
7048                                type: (_) @context) @item
7049                            "#,
7050                    )
7051                    .unwrap(),
7052            ))
7053        });
7054        let workspace = add_outline_panel(&project, cx).await;
7055        let cx = &mut VisualTestContext::from_window(*workspace, cx);
7056        let outline_panel = outline_panel(&workspace, cx);
7057
7058        outline_panel.update_in(cx, |outline_panel, window, cx| {
7059            outline_panel.set_active(true, window, cx)
7060        });
7061
7062        workspace
7063            .update(cx, |workspace, window, cx| {
7064                workspace.open_abs_path(
7065                    PathBuf::from("/test/src/lib.rs"),
7066                    OpenOptions {
7067                        visible: Some(OpenVisible::All),
7068                        ..Default::default()
7069                    },
7070                    window,
7071                    cx,
7072                )
7073            })
7074            .unwrap()
7075            .await
7076            .unwrap();
7077
7078        cx.executor()
7079            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(500));
7080        cx.run_until_parked();
7081
7082        // Force another update cycle to ensure outlines are fetched
7083        outline_panel.update_in(cx, |panel, window, cx| {
7084            panel.update_non_fs_items(window, cx);
7085            panel.update_cached_entries(Some(UPDATE_DEBOUNCE), window, cx);
7086        });
7087        cx.executor()
7088            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(500));
7089        cx.run_until_parked();
7090
7091        outline_panel.update(cx, |outline_panel, cx| {
7092            assert_eq!(
7093                display_entries(
7094                    &project,
7095                    &snapshot(outline_panel, cx),
7096                    &outline_panel.cached_entries,
7097                    outline_panel.selected_entry(),
7098                    cx,
7099                ),
7100                indoc!(
7101                    "
7102outline: mod outer  <==== selected
7103  outline: pub struct OuterStruct
7104    outline: field: String
7105  outline: impl OuterStruct
7106    outline: pub fn new()
7107    outline: pub fn method(&self)
7108  outline: mod inner
7109    outline: pub fn inner_function()
7110    outline: pub struct InnerStruct
7111      outline: value: i32
7112outline: fn main()"
7113                )
7114            );
7115        });
7116
7117        let parent_outline = outline_panel
7118            .read_with(cx, |panel, _cx| {
7119                panel
7120                    .cached_entries
7121                    .iter()
7122                    .find_map(|entry| match &entry.entry {
7123                        PanelEntry::Outline(OutlineEntry::Outline(outline))
7124                            if panel
7125                                .outline_children_cache
7126                                .get(&outline.buffer_id)
7127                                .and_then(|children_map| {
7128                                    let key =
7129                                        (outline.outline.range.clone(), outline.outline.depth);
7130                                    children_map.get(&key)
7131                                })
7132                                .copied()
7133                                .unwrap_or(false) =>
7134                        {
7135                            Some(entry.entry.clone())
7136                        }
7137                        _ => None,
7138                    })
7139            })
7140            .expect("Should find an outline with children");
7141
7142        outline_panel.update_in(cx, |panel, window, cx| {
7143            panel.select_entry(parent_outline.clone(), true, window, cx);
7144            panel.collapse_selected_entry(&CollapseSelectedEntry, window, cx);
7145        });
7146        cx.executor()
7147            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7148        cx.run_until_parked();
7149
7150        outline_panel.update(cx, |outline_panel, cx| {
7151            assert_eq!(
7152                display_entries(
7153                    &project,
7154                    &snapshot(outline_panel, cx),
7155                    &outline_panel.cached_entries,
7156                    outline_panel.selected_entry(),
7157                    cx,
7158                ),
7159                indoc!(
7160                    "
7161outline: mod outer  <==== selected
7162outline: fn main()"
7163                )
7164            );
7165        });
7166
7167        outline_panel.update_in(cx, |panel, window, cx| {
7168            panel.expand_selected_entry(&ExpandSelectedEntry, window, cx);
7169        });
7170        cx.executor()
7171            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7172        cx.run_until_parked();
7173
7174        outline_panel.update(cx, |outline_panel, cx| {
7175            assert_eq!(
7176                display_entries(
7177                    &project,
7178                    &snapshot(outline_panel, cx),
7179                    &outline_panel.cached_entries,
7180                    outline_panel.selected_entry(),
7181                    cx,
7182                ),
7183                indoc!(
7184                    "
7185outline: mod outer  <==== selected
7186  outline: pub struct OuterStruct
7187    outline: field: String
7188  outline: impl OuterStruct
7189    outline: pub fn new()
7190    outline: pub fn method(&self)
7191  outline: mod inner
7192    outline: pub fn inner_function()
7193    outline: pub struct InnerStruct
7194      outline: value: i32
7195outline: fn main()"
7196                )
7197            );
7198        });
7199
7200        outline_panel.update_in(cx, |panel, window, cx| {
7201            panel.collapsed_entries.clear();
7202            panel.update_cached_entries(None, window, cx);
7203        });
7204        cx.executor()
7205            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7206        cx.run_until_parked();
7207
7208        outline_panel.update_in(cx, |panel, window, cx| {
7209            let outlines_with_children: Vec<_> = panel
7210                .cached_entries
7211                .iter()
7212                .filter_map(|entry| match &entry.entry {
7213                    PanelEntry::Outline(OutlineEntry::Outline(outline))
7214                        if panel
7215                            .outline_children_cache
7216                            .get(&outline.buffer_id)
7217                            .and_then(|children_map| {
7218                                let key = (outline.outline.range.clone(), outline.outline.depth);
7219                                children_map.get(&key)
7220                            })
7221                            .copied()
7222                            .unwrap_or(false) =>
7223                    {
7224                        Some(entry.entry.clone())
7225                    }
7226                    _ => None,
7227                })
7228                .collect();
7229
7230            for outline in outlines_with_children {
7231                panel.select_entry(outline, false, window, cx);
7232                panel.collapse_selected_entry(&CollapseSelectedEntry, window, cx);
7233            }
7234        });
7235        cx.executor()
7236            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7237        cx.run_until_parked();
7238
7239        outline_panel.update(cx, |outline_panel, cx| {
7240            assert_eq!(
7241                display_entries(
7242                    &project,
7243                    &snapshot(outline_panel, cx),
7244                    &outline_panel.cached_entries,
7245                    outline_panel.selected_entry(),
7246                    cx,
7247                ),
7248                indoc!(
7249                    "
7250outline: mod outer
7251outline: fn main()"
7252                )
7253            );
7254        });
7255
7256        let collapsed_entries_count =
7257            outline_panel.read_with(cx, |panel, _| panel.collapsed_entries.len());
7258        assert!(
7259            collapsed_entries_count > 0,
7260            "Should have collapsed entries tracked"
7261        );
7262    }
7263
7264    #[gpui::test]
7265    async fn test_outline_click_toggle_behavior(cx: &mut TestAppContext) {
7266        init_test(cx);
7267
7268        let fs = FakeFs::new(cx.background_executor.clone());
7269        fs.insert_tree(
7270            "/test",
7271            json!({
7272                "src": {
7273                    "main.rs": indoc!("
7274                            struct Config {
7275                                name: String,
7276                                value: i32,
7277                            }
7278                            impl Config {
7279                                fn new(name: String) -> Self {
7280                                    Self { name, value: 0 }
7281                                }
7282                                fn get_value(&self) -> i32 {
7283                                    self.value
7284                                }
7285                            }
7286                            enum Status {
7287                                Active,
7288                                Inactive,
7289                            }
7290                            fn process_config(config: Config) -> Status {
7291                                if config.get_value() > 0 {
7292                                    Status::Active
7293                                } else {
7294                                    Status::Inactive
7295                                }
7296                            }
7297                            fn main() {
7298                                let config = Config::new(\"test\".to_string());
7299                                let status = process_config(config);
7300                            }
7301                        "),
7302                }
7303            }),
7304        )
7305        .await;
7306
7307        let project = Project::test(fs.clone(), ["/test".as_ref()], cx).await;
7308        project.read_with(cx, |project, _| {
7309            project.languages().add(Arc::new(
7310                rust_lang()
7311                    .with_outline_query(
7312                        r#"
7313                            (struct_item
7314                                (visibility_modifier)? @context
7315                                "struct" @context
7316                                name: (_) @name) @item
7317                            (impl_item
7318                                "impl" @context
7319                                trait: (_)? @context
7320                                "for"? @context
7321                                type: (_) @context
7322                                body: (_)) @item
7323                            (function_item
7324                                (visibility_modifier)? @context
7325                                "fn" @context
7326                                name: (_) @name
7327                                parameters: (_) @context) @item
7328                            (mod_item
7329                                (visibility_modifier)? @context
7330                                "mod" @context
7331                                name: (_) @name) @item
7332                            (enum_item
7333                                (visibility_modifier)? @context
7334                                "enum" @context
7335                                name: (_) @name) @item
7336                            (field_declaration
7337                                (visibility_modifier)? @context
7338                                name: (_) @name
7339                                ":" @context
7340                                type: (_) @context) @item
7341                            "#,
7342                    )
7343                    .unwrap(),
7344            ))
7345        });
7346
7347        let workspace = add_outline_panel(&project, cx).await;
7348        let cx = &mut VisualTestContext::from_window(*workspace, cx);
7349        let outline_panel = outline_panel(&workspace, cx);
7350
7351        outline_panel.update_in(cx, |outline_panel, window, cx| {
7352            outline_panel.set_active(true, window, cx)
7353        });
7354
7355        let _editor = workspace
7356            .update(cx, |workspace, window, cx| {
7357                workspace.open_abs_path(
7358                    PathBuf::from("/test/src/main.rs"),
7359                    OpenOptions {
7360                        visible: Some(OpenVisible::All),
7361                        ..Default::default()
7362                    },
7363                    window,
7364                    cx,
7365                )
7366            })
7367            .unwrap()
7368            .await
7369            .unwrap();
7370
7371        cx.executor()
7372            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7373        cx.run_until_parked();
7374
7375        outline_panel.update(cx, |outline_panel, _cx| {
7376            outline_panel.selected_entry = SelectedEntry::None;
7377        });
7378
7379        // Check initial state - all entries should be expanded by default
7380        outline_panel.update(cx, |outline_panel, cx| {
7381            assert_eq!(
7382                display_entries(
7383                    &project,
7384                    &snapshot(outline_panel, cx),
7385                    &outline_panel.cached_entries,
7386                    outline_panel.selected_entry(),
7387                    cx,
7388                ),
7389                indoc!(
7390                    "
7391outline: struct Config
7392  outline: name: String
7393  outline: value: i32
7394outline: impl Config
7395  outline: fn new(name: String)
7396  outline: fn get_value(&self)
7397outline: enum Status
7398outline: fn process_config(config: Config)
7399outline: fn main()"
7400                )
7401            );
7402        });
7403
7404        outline_panel.update(cx, |outline_panel, _cx| {
7405            outline_panel.selected_entry = SelectedEntry::None;
7406        });
7407
7408        cx.update(|window, cx| {
7409            outline_panel.update(cx, |outline_panel, cx| {
7410                outline_panel.select_first(&SelectFirst, window, cx);
7411            });
7412        });
7413
7414        cx.executor()
7415            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7416        cx.run_until_parked();
7417
7418        outline_panel.update(cx, |outline_panel, cx| {
7419            assert_eq!(
7420                display_entries(
7421                    &project,
7422                    &snapshot(outline_panel, cx),
7423                    &outline_panel.cached_entries,
7424                    outline_panel.selected_entry(),
7425                    cx,
7426                ),
7427                indoc!(
7428                    "
7429outline: struct Config  <==== selected
7430  outline: name: String
7431  outline: value: i32
7432outline: impl Config
7433  outline: fn new(name: String)
7434  outline: fn get_value(&self)
7435outline: enum Status
7436outline: fn process_config(config: Config)
7437outline: fn main()"
7438                )
7439            );
7440        });
7441
7442        cx.update(|window, cx| {
7443            outline_panel.update(cx, |outline_panel, cx| {
7444                outline_panel.open_selected_entry(&OpenSelectedEntry, 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
7464outline: impl Config
7465  outline: fn new(name: String)
7466  outline: fn get_value(&self)
7467outline: enum Status
7468outline: fn process_config(config: Config)
7469outline: fn main()"
7470                )
7471            );
7472        });
7473
7474        cx.update(|window, cx| {
7475            outline_panel.update(cx, |outline_panel, cx| {
7476                outline_panel.open_selected_entry(&OpenSelectedEntry, window, cx);
7477            });
7478        });
7479
7480        cx.executor()
7481            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7482        cx.run_until_parked();
7483
7484        outline_panel.update(cx, |outline_panel, cx| {
7485            assert_eq!(
7486                display_entries(
7487                    &project,
7488                    &snapshot(outline_panel, cx),
7489                    &outline_panel.cached_entries,
7490                    outline_panel.selected_entry(),
7491                    cx,
7492                ),
7493                indoc!(
7494                    "
7495outline: struct Config  <==== selected
7496  outline: name: String
7497  outline: value: i32
7498outline: impl Config
7499  outline: fn new(name: String)
7500  outline: fn get_value(&self)
7501outline: enum Status
7502outline: fn process_config(config: Config)
7503outline: fn main()"
7504                )
7505            );
7506        });
7507    }
7508}