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::{MAIN_SEPARATOR_STR, 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};
  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<Path>, 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    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    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    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    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 f32);
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    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().to_string())
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        if let Some(clipboard_text) = self
1909            .selected_entry()
1910            .and_then(|entry| match entry {
1911                PanelEntry::Fs(entry) => self.relative_path(entry, cx),
1912                PanelEntry::FoldedDirs(folded_dirs) => {
1913                    folded_dirs.entries.last().map(|entry| entry.path.clone())
1914                }
1915                PanelEntry::Search(_) | PanelEntry::Outline(..) => None,
1916            })
1917            .map(|p| p.to_string_lossy().to_string())
1918        {
1919            cx.write_to_clipboard(ClipboardItem::new_string(clipboard_text));
1920        }
1921    }
1922
1923    fn reveal_in_finder(
1924        &mut self,
1925        _: &RevealInFileManager,
1926        _: &mut Window,
1927        cx: &mut Context<Self>,
1928    ) {
1929        if let Some(abs_path) = self
1930            .selected_entry()
1931            .and_then(|entry| self.abs_path(entry, cx))
1932        {
1933            cx.reveal_path(&abs_path);
1934        }
1935    }
1936
1937    fn open_in_terminal(
1938        &mut self,
1939        _: &OpenInTerminal,
1940        window: &mut Window,
1941        cx: &mut Context<Self>,
1942    ) {
1943        let selected_entry = self.selected_entry();
1944        let abs_path = selected_entry.and_then(|entry| self.abs_path(entry, cx));
1945        let working_directory = if let (
1946            Some(abs_path),
1947            Some(PanelEntry::Fs(FsEntry::File(..) | FsEntry::ExternalFile(..))),
1948        ) = (&abs_path, selected_entry)
1949        {
1950            abs_path.parent().map(|p| p.to_owned())
1951        } else {
1952            abs_path
1953        };
1954
1955        if let Some(working_directory) = working_directory {
1956            window.dispatch_action(
1957                workspace::OpenTerminal { working_directory }.boxed_clone(),
1958                cx,
1959            )
1960        }
1961    }
1962
1963    fn reveal_entry_for_selection(
1964        &mut self,
1965        editor: Entity<Editor>,
1966        window: &mut Window,
1967        cx: &mut Context<Self>,
1968    ) {
1969        if !self.active
1970            || !OutlinePanelSettings::get_global(cx).auto_reveal_entries
1971            || self.focus_handle.contains_focused(window, cx)
1972        {
1973            return;
1974        }
1975        let project = self.project.clone();
1976        self.reveal_selection_task = cx.spawn_in(window, async move |outline_panel, cx| {
1977            cx.background_executor().timer(UPDATE_DEBOUNCE).await;
1978            let entry_with_selection =
1979                outline_panel.update_in(cx, |outline_panel, window, cx| {
1980                    outline_panel.location_for_editor_selection(&editor, window, cx)
1981                })?;
1982            let Some(entry_with_selection) = entry_with_selection else {
1983                outline_panel.update(cx, |outline_panel, cx| {
1984                    outline_panel.selected_entry = SelectedEntry::None;
1985                    cx.notify();
1986                })?;
1987                return Ok(());
1988            };
1989            let related_buffer_entry = match &entry_with_selection {
1990                PanelEntry::Fs(FsEntry::File(FsEntryFile {
1991                    worktree_id,
1992                    buffer_id,
1993                    ..
1994                })) => project.update(cx, |project, cx| {
1995                    let entry_id = project
1996                        .buffer_for_id(*buffer_id, cx)
1997                        .and_then(|buffer| buffer.read(cx).entry_id(cx));
1998                    project
1999                        .worktree_for_id(*worktree_id, cx)
2000                        .zip(entry_id)
2001                        .and_then(|(worktree, entry_id)| {
2002                            let entry = worktree.read(cx).entry_for_id(entry_id)?.clone();
2003                            Some((worktree, entry))
2004                        })
2005                })?,
2006                PanelEntry::Outline(outline_entry) => {
2007                    let (buffer_id, excerpt_id) = outline_entry.ids();
2008                    outline_panel.update(cx, |outline_panel, cx| {
2009                        outline_panel
2010                            .collapsed_entries
2011                            .remove(&CollapsedEntry::ExternalFile(buffer_id));
2012                        outline_panel
2013                            .collapsed_entries
2014                            .remove(&CollapsedEntry::Excerpt(buffer_id, excerpt_id));
2015                        let project = outline_panel.project.read(cx);
2016                        let entry_id = project
2017                            .buffer_for_id(buffer_id, cx)
2018                            .and_then(|buffer| buffer.read(cx).entry_id(cx));
2019
2020                        entry_id.and_then(|entry_id| {
2021                            project
2022                                .worktree_for_entry(entry_id, cx)
2023                                .and_then(|worktree| {
2024                                    let worktree_id = worktree.read(cx).id();
2025                                    outline_panel
2026                                        .collapsed_entries
2027                                        .remove(&CollapsedEntry::File(worktree_id, buffer_id));
2028                                    let entry = worktree.read(cx).entry_for_id(entry_id)?.clone();
2029                                    Some((worktree, entry))
2030                                })
2031                        })
2032                    })?
2033                }
2034                PanelEntry::Fs(FsEntry::ExternalFile(..)) => None,
2035                PanelEntry::Search(SearchEntry { match_range, .. }) => match_range
2036                    .start
2037                    .buffer_id
2038                    .or(match_range.end.buffer_id)
2039                    .map(|buffer_id| {
2040                        outline_panel.update(cx, |outline_panel, cx| {
2041                            outline_panel
2042                                .collapsed_entries
2043                                .remove(&CollapsedEntry::ExternalFile(buffer_id));
2044                            let project = project.read(cx);
2045                            let entry_id = project
2046                                .buffer_for_id(buffer_id, cx)
2047                                .and_then(|buffer| buffer.read(cx).entry_id(cx));
2048
2049                            entry_id.and_then(|entry_id| {
2050                                project
2051                                    .worktree_for_entry(entry_id, cx)
2052                                    .and_then(|worktree| {
2053                                        let worktree_id = worktree.read(cx).id();
2054                                        outline_panel
2055                                            .collapsed_entries
2056                                            .remove(&CollapsedEntry::File(worktree_id, buffer_id));
2057                                        let entry =
2058                                            worktree.read(cx).entry_for_id(entry_id)?.clone();
2059                                        Some((worktree, entry))
2060                                    })
2061                            })
2062                        })
2063                    })
2064                    .transpose()?
2065                    .flatten(),
2066                _ => return anyhow::Ok(()),
2067            };
2068            if let Some((worktree, buffer_entry)) = related_buffer_entry {
2069                outline_panel.update(cx, |outline_panel, cx| {
2070                    let worktree_id = worktree.read(cx).id();
2071                    let mut dirs_to_expand = Vec::new();
2072                    {
2073                        let mut traversal = worktree.read(cx).traverse_from_path(
2074                            true,
2075                            true,
2076                            true,
2077                            buffer_entry.path.as_ref(),
2078                        );
2079                        let mut current_entry = buffer_entry;
2080                        loop {
2081                            if current_entry.is_dir()
2082                                && outline_panel
2083                                    .collapsed_entries
2084                                    .remove(&CollapsedEntry::Dir(worktree_id, current_entry.id))
2085                            {
2086                                dirs_to_expand.push(current_entry.id);
2087                            }
2088
2089                            if traversal.back_to_parent()
2090                                && let Some(parent_entry) = traversal.entry()
2091                            {
2092                                current_entry = parent_entry.clone();
2093                                continue;
2094                            }
2095                            break;
2096                        }
2097                    }
2098                    for dir_to_expand in dirs_to_expand {
2099                        project
2100                            .update(cx, |project, cx| {
2101                                project.expand_entry(worktree_id, dir_to_expand, cx)
2102                            })
2103                            .unwrap_or_else(|| Task::ready(Ok(())))
2104                            .detach_and_log_err(cx)
2105                    }
2106                })?
2107            }
2108
2109            outline_panel.update_in(cx, |outline_panel, window, cx| {
2110                outline_panel.select_entry(entry_with_selection, false, window, cx);
2111                outline_panel.update_cached_entries(None, window, cx);
2112            })?;
2113
2114            anyhow::Ok(())
2115        });
2116    }
2117
2118    fn render_excerpt(
2119        &self,
2120        excerpt: &OutlineEntryExcerpt,
2121        depth: usize,
2122        window: &mut Window,
2123        cx: &mut Context<OutlinePanel>,
2124    ) -> Option<Stateful<Div>> {
2125        let item_id = ElementId::from(excerpt.id.to_proto() as usize);
2126        let is_active = match self.selected_entry() {
2127            Some(PanelEntry::Outline(OutlineEntry::Excerpt(selected_excerpt))) => {
2128                selected_excerpt.buffer_id == excerpt.buffer_id && selected_excerpt.id == excerpt.id
2129            }
2130            _ => false,
2131        };
2132        let has_outlines = self
2133            .excerpts
2134            .get(&excerpt.buffer_id)
2135            .and_then(|excerpts| match &excerpts.get(&excerpt.id)?.outlines {
2136                ExcerptOutlines::Outlines(outlines) => Some(outlines),
2137                ExcerptOutlines::Invalidated(outlines) => Some(outlines),
2138                ExcerptOutlines::NotFetched => None,
2139            })
2140            .is_some_and(|outlines| !outlines.is_empty());
2141        let is_expanded = !self
2142            .collapsed_entries
2143            .contains(&CollapsedEntry::Excerpt(excerpt.buffer_id, excerpt.id));
2144        let color = entry_label_color(is_active);
2145        let icon = if has_outlines {
2146            FileIcons::get_chevron_icon(is_expanded, cx)
2147                .map(|icon_path| Icon::from_path(icon_path).color(color).into_any_element())
2148        } else {
2149            None
2150        }
2151        .unwrap_or_else(empty_icon);
2152
2153        let label = self.excerpt_label(excerpt.buffer_id, &excerpt.range, cx)?;
2154        let label_element = Label::new(label)
2155            .single_line()
2156            .color(color)
2157            .into_any_element();
2158
2159        Some(self.entry_element(
2160            PanelEntry::Outline(OutlineEntry::Excerpt(excerpt.clone())),
2161            item_id,
2162            depth,
2163            icon,
2164            is_active,
2165            label_element,
2166            window,
2167            cx,
2168        ))
2169    }
2170
2171    fn excerpt_label(
2172        &self,
2173        buffer_id: BufferId,
2174        range: &ExcerptRange<language::Anchor>,
2175        cx: &App,
2176    ) -> Option<String> {
2177        let buffer_snapshot = self.buffer_snapshot_for_id(buffer_id, cx)?;
2178        let excerpt_range = range.context.to_point(&buffer_snapshot);
2179        Some(format!(
2180            "Lines {}- {}",
2181            excerpt_range.start.row + 1,
2182            excerpt_range.end.row + 1,
2183        ))
2184    }
2185
2186    fn render_outline(
2187        &self,
2188        outline: &OutlineEntryOutline,
2189        depth: usize,
2190        string_match: Option<&StringMatch>,
2191        window: &mut Window,
2192        cx: &mut Context<Self>,
2193    ) -> Stateful<Div> {
2194        let item_id = ElementId::from(SharedString::from(format!(
2195            "{:?}|{:?}{:?}|{:?}",
2196            outline.buffer_id, outline.excerpt_id, outline.outline.range, &outline.outline.text,
2197        )));
2198
2199        let label_element = outline::render_item(
2200            &outline.outline,
2201            string_match
2202                .map(|string_match| string_match.ranges().collect::<Vec<_>>())
2203                .unwrap_or_default(),
2204            cx,
2205        )
2206        .into_any_element();
2207
2208        let is_active = match self.selected_entry() {
2209            Some(PanelEntry::Outline(OutlineEntry::Outline(selected))) => {
2210                outline == selected && outline.outline == selected.outline
2211            }
2212            _ => false,
2213        };
2214
2215        let has_children = self
2216            .outline_children_cache
2217            .get(&outline.buffer_id)
2218            .and_then(|children_map| {
2219                let key = (outline.outline.range.clone(), outline.outline.depth);
2220                children_map.get(&key)
2221            })
2222            .copied()
2223            .unwrap_or(false);
2224        let is_expanded = !self.collapsed_entries.contains(&CollapsedEntry::Outline(
2225            outline.buffer_id,
2226            outline.excerpt_id,
2227            outline.outline.range.clone(),
2228        ));
2229
2230        let icon = if has_children {
2231            FileIcons::get_chevron_icon(is_expanded, cx)
2232                .map(|icon_path| {
2233                    Icon::from_path(icon_path)
2234                        .color(entry_label_color(is_active))
2235                        .into_any_element()
2236                })
2237                .unwrap_or_else(empty_icon)
2238        } else {
2239            empty_icon()
2240        };
2241
2242        self.entry_element(
2243            PanelEntry::Outline(OutlineEntry::Outline(outline.clone())),
2244            item_id,
2245            depth,
2246            icon,
2247            is_active,
2248            label_element,
2249            window,
2250            cx,
2251        )
2252    }
2253
2254    fn render_entry(
2255        &self,
2256        rendered_entry: &FsEntry,
2257        depth: usize,
2258        string_match: Option<&StringMatch>,
2259        window: &mut Window,
2260        cx: &mut Context<Self>,
2261    ) -> Stateful<Div> {
2262        let settings = OutlinePanelSettings::get_global(cx);
2263        let is_active = match self.selected_entry() {
2264            Some(PanelEntry::Fs(selected_entry)) => selected_entry == rendered_entry,
2265            _ => false,
2266        };
2267        let (item_id, label_element, icon) = match rendered_entry {
2268            FsEntry::File(FsEntryFile {
2269                worktree_id, entry, ..
2270            }) => {
2271                let name = self.entry_name(worktree_id, entry, cx);
2272                let color =
2273                    entry_git_aware_label_color(entry.git_summary, entry.is_ignored, is_active);
2274                let icon = if settings.file_icons {
2275                    FileIcons::get_icon(&entry.path, cx)
2276                        .map(|icon_path| Icon::from_path(icon_path).color(color).into_any_element())
2277                } else {
2278                    None
2279                };
2280                (
2281                    ElementId::from(entry.id.to_proto() as usize),
2282                    HighlightedLabel::new(
2283                        name,
2284                        string_match
2285                            .map(|string_match| string_match.positions.clone())
2286                            .unwrap_or_default(),
2287                    )
2288                    .color(color)
2289                    .into_any_element(),
2290                    icon.unwrap_or_else(empty_icon),
2291                )
2292            }
2293            FsEntry::Directory(directory) => {
2294                let name = self.entry_name(&directory.worktree_id, &directory.entry, cx);
2295
2296                let is_expanded = !self.collapsed_entries.contains(&CollapsedEntry::Dir(
2297                    directory.worktree_id,
2298                    directory.entry.id,
2299                ));
2300                let color = entry_git_aware_label_color(
2301                    directory.entry.git_summary,
2302                    directory.entry.is_ignored,
2303                    is_active,
2304                );
2305                let icon = if settings.folder_icons {
2306                    FileIcons::get_folder_icon(is_expanded, &directory.entry.path, cx)
2307                } else {
2308                    FileIcons::get_chevron_icon(is_expanded, cx)
2309                }
2310                .map(Icon::from_path)
2311                .map(|icon| icon.color(color).into_any_element());
2312                (
2313                    ElementId::from(directory.entry.id.to_proto() as usize),
2314                    HighlightedLabel::new(
2315                        name,
2316                        string_match
2317                            .map(|string_match| string_match.positions.clone())
2318                            .unwrap_or_default(),
2319                    )
2320                    .color(color)
2321                    .into_any_element(),
2322                    icon.unwrap_or_else(empty_icon),
2323                )
2324            }
2325            FsEntry::ExternalFile(external_file) => {
2326                let color = entry_label_color(is_active);
2327                let (icon, name) = match self.buffer_snapshot_for_id(external_file.buffer_id, cx) {
2328                    Some(buffer_snapshot) => match buffer_snapshot.file() {
2329                        Some(file) => {
2330                            let path = file.path();
2331                            let icon = if settings.file_icons {
2332                                FileIcons::get_icon(path.as_ref(), cx)
2333                            } else {
2334                                None
2335                            }
2336                            .map(Icon::from_path)
2337                            .map(|icon| icon.color(color).into_any_element());
2338                            (icon, file_name(path.as_ref()))
2339                        }
2340                        None => (None, "Untitled".to_string()),
2341                    },
2342                    None => (None, "Unknown buffer".to_string()),
2343                };
2344                (
2345                    ElementId::from(external_file.buffer_id.to_proto() as usize),
2346                    HighlightedLabel::new(
2347                        name,
2348                        string_match
2349                            .map(|string_match| string_match.positions.clone())
2350                            .unwrap_or_default(),
2351                    )
2352                    .color(color)
2353                    .into_any_element(),
2354                    icon.unwrap_or_else(empty_icon),
2355                )
2356            }
2357        };
2358
2359        self.entry_element(
2360            PanelEntry::Fs(rendered_entry.clone()),
2361            item_id,
2362            depth,
2363            icon,
2364            is_active,
2365            label_element,
2366            window,
2367            cx,
2368        )
2369    }
2370
2371    fn render_folded_dirs(
2372        &self,
2373        folded_dir: &FoldedDirsEntry,
2374        depth: usize,
2375        string_match: Option<&StringMatch>,
2376        window: &mut Window,
2377        cx: &mut Context<OutlinePanel>,
2378    ) -> Stateful<Div> {
2379        let settings = OutlinePanelSettings::get_global(cx);
2380        let is_active = match self.selected_entry() {
2381            Some(PanelEntry::FoldedDirs(selected_dirs)) => {
2382                selected_dirs.worktree_id == folded_dir.worktree_id
2383                    && selected_dirs.entries == folded_dir.entries
2384            }
2385            _ => false,
2386        };
2387        let (item_id, label_element, icon) = {
2388            let name = self.dir_names_string(&folded_dir.entries, folded_dir.worktree_id, cx);
2389
2390            let is_expanded = folded_dir.entries.iter().all(|dir| {
2391                !self
2392                    .collapsed_entries
2393                    .contains(&CollapsedEntry::Dir(folded_dir.worktree_id, dir.id))
2394            });
2395            let is_ignored = folded_dir.entries.iter().any(|entry| entry.is_ignored);
2396            let git_status = folded_dir
2397                .entries
2398                .first()
2399                .map(|entry| entry.git_summary)
2400                .unwrap_or_default();
2401            let color = entry_git_aware_label_color(git_status, is_ignored, is_active);
2402            let icon = if settings.folder_icons {
2403                FileIcons::get_folder_icon(is_expanded, &Path::new(&name), cx)
2404            } else {
2405                FileIcons::get_chevron_icon(is_expanded, cx)
2406            }
2407            .map(Icon::from_path)
2408            .map(|icon| icon.color(color).into_any_element());
2409            (
2410                ElementId::from(
2411                    folded_dir
2412                        .entries
2413                        .last()
2414                        .map(|entry| entry.id.to_proto())
2415                        .unwrap_or_else(|| folded_dir.worktree_id.to_proto())
2416                        as usize,
2417                ),
2418                HighlightedLabel::new(
2419                    name,
2420                    string_match
2421                        .map(|string_match| string_match.positions.clone())
2422                        .unwrap_or_default(),
2423                )
2424                .color(color)
2425                .into_any_element(),
2426                icon.unwrap_or_else(empty_icon),
2427            )
2428        };
2429
2430        self.entry_element(
2431            PanelEntry::FoldedDirs(folded_dir.clone()),
2432            item_id,
2433            depth,
2434            icon,
2435            is_active,
2436            label_element,
2437            window,
2438            cx,
2439        )
2440    }
2441
2442    fn render_search_match(
2443        &mut self,
2444        multi_buffer_snapshot: Option<&MultiBufferSnapshot>,
2445        match_range: &Range<editor::Anchor>,
2446        render_data: &Arc<OnceLock<SearchData>>,
2447        kind: SearchKind,
2448        depth: usize,
2449        string_match: Option<&StringMatch>,
2450        window: &mut Window,
2451        cx: &mut Context<Self>,
2452    ) -> Option<Stateful<Div>> {
2453        let search_data = match render_data.get() {
2454            Some(search_data) => search_data,
2455            None => {
2456                if let ItemsDisplayMode::Search(search_state) = &mut self.mode
2457                    && let Some(multi_buffer_snapshot) = multi_buffer_snapshot
2458                {
2459                    search_state
2460                        .highlight_search_match_tx
2461                        .try_send(HighlightArguments {
2462                            multi_buffer_snapshot: multi_buffer_snapshot.clone(),
2463                            match_range: match_range.clone(),
2464                            search_data: Arc::clone(render_data),
2465                        })
2466                        .ok();
2467                }
2468                return None;
2469            }
2470        };
2471        let search_matches = string_match
2472            .iter()
2473            .flat_map(|string_match| string_match.ranges())
2474            .collect::<Vec<_>>();
2475        let match_ranges = if search_matches.is_empty() {
2476            &search_data.search_match_indices
2477        } else {
2478            &search_matches
2479        };
2480        let label_element = outline::render_item(
2481            &OutlineItem {
2482                depth,
2483                annotation_range: None,
2484                range: search_data.context_range.clone(),
2485                text: search_data.context_text.clone(),
2486                highlight_ranges: search_data
2487                    .highlights_data
2488                    .get()
2489                    .cloned()
2490                    .unwrap_or_default(),
2491                name_ranges: search_data.search_match_indices.clone(),
2492                body_range: Some(search_data.context_range.clone()),
2493            },
2494            match_ranges.iter().cloned(),
2495            cx,
2496        );
2497        let truncated_contents_label = || Label::new(TRUNCATED_CONTEXT_MARK);
2498        let entire_label = h_flex()
2499            .justify_center()
2500            .p_0()
2501            .when(search_data.truncated_left, |parent| {
2502                parent.child(truncated_contents_label())
2503            })
2504            .child(label_element)
2505            .when(search_data.truncated_right, |parent| {
2506                parent.child(truncated_contents_label())
2507            })
2508            .into_any_element();
2509
2510        let is_active = match self.selected_entry() {
2511            Some(PanelEntry::Search(SearchEntry {
2512                match_range: selected_match_range,
2513                ..
2514            })) => match_range == selected_match_range,
2515            _ => false,
2516        };
2517        Some(self.entry_element(
2518            PanelEntry::Search(SearchEntry {
2519                kind,
2520                match_range: match_range.clone(),
2521                render_data: render_data.clone(),
2522            }),
2523            ElementId::from(SharedString::from(format!("search-{match_range:?}"))),
2524            depth,
2525            empty_icon(),
2526            is_active,
2527            entire_label,
2528            window,
2529            cx,
2530        ))
2531    }
2532
2533    fn entry_element(
2534        &self,
2535        rendered_entry: PanelEntry,
2536        item_id: ElementId,
2537        depth: usize,
2538        icon_element: AnyElement,
2539        is_active: bool,
2540        label_element: gpui::AnyElement,
2541        window: &mut Window,
2542        cx: &mut Context<OutlinePanel>,
2543    ) -> Stateful<Div> {
2544        let settings = OutlinePanelSettings::get_global(cx);
2545        div()
2546            .text_ui(cx)
2547            .id(item_id.clone())
2548            .on_click({
2549                let clicked_entry = rendered_entry.clone();
2550                cx.listener(move |outline_panel, event: &gpui::ClickEvent, window, cx| {
2551                    if event.is_right_click() || event.first_focus() {
2552                        return;
2553                    }
2554
2555                    let change_focus = event.click_count() > 1;
2556                    outline_panel.toggle_expanded(&clicked_entry, window, cx);
2557
2558                    outline_panel.scroll_editor_to_entry(
2559                        &clicked_entry,
2560                        true,
2561                        change_focus,
2562                        window,
2563                        cx,
2564                    );
2565                })
2566            })
2567            .cursor_pointer()
2568            .child(
2569                ListItem::new(item_id)
2570                    .indent_level(depth)
2571                    .indent_step_size(px(settings.indent_size))
2572                    .toggle_state(is_active)
2573                    .child(
2574                        h_flex()
2575                            .child(h_flex().w(px(16.)).justify_center().child(icon_element))
2576                            .child(h_flex().h_6().child(label_element).ml_1()),
2577                    )
2578                    .on_secondary_mouse_down(cx.listener(
2579                        move |outline_panel, event: &MouseDownEvent, window, cx| {
2580                            // Stop propagation to prevent the catch-all context menu for the project
2581                            // panel from being deployed.
2582                            cx.stop_propagation();
2583                            outline_panel.deploy_context_menu(
2584                                event.position,
2585                                rendered_entry.clone(),
2586                                window,
2587                                cx,
2588                            )
2589                        },
2590                    )),
2591            )
2592            .border_1()
2593            .border_r_2()
2594            .rounded_none()
2595            .hover(|style| {
2596                if is_active {
2597                    style
2598                } else {
2599                    let hover_color = cx.theme().colors().ghost_element_hover;
2600                    style.bg(hover_color).border_color(hover_color)
2601                }
2602            })
2603            .when(
2604                is_active && self.focus_handle.contains_focused(window, cx),
2605                |div| div.border_color(Color::Selected.color(cx)),
2606            )
2607    }
2608
2609    fn entry_name(&self, worktree_id: &WorktreeId, entry: &Entry, cx: &App) -> String {
2610        match self.project.read(cx).worktree_for_id(*worktree_id, cx) {
2611            Some(worktree) => {
2612                let worktree = worktree.read(cx);
2613                match worktree.snapshot().root_entry() {
2614                    Some(root_entry) => {
2615                        if root_entry.id == entry.id {
2616                            file_name(worktree.abs_path().as_ref())
2617                        } else {
2618                            let path = worktree.absolutize(entry.path.as_ref()).ok();
2619                            let path = path.as_deref().unwrap_or_else(|| entry.path.as_ref());
2620                            file_name(path)
2621                        }
2622                    }
2623                    None => {
2624                        let path = worktree.absolutize(entry.path.as_ref()).ok();
2625                        let path = path.as_deref().unwrap_or_else(|| entry.path.as_ref());
2626                        file_name(path)
2627                    }
2628                }
2629            }
2630            None => file_name(entry.path.as_ref()),
2631        }
2632    }
2633
2634    fn update_fs_entries(
2635        &mut self,
2636        active_editor: Entity<Editor>,
2637        debounce: Option<Duration>,
2638        window: &mut Window,
2639        cx: &mut Context<Self>,
2640    ) {
2641        if !self.active {
2642            return;
2643        }
2644
2645        let auto_fold_dirs = OutlinePanelSettings::get_global(cx).auto_fold_dirs;
2646        let active_multi_buffer = active_editor.read(cx).buffer().clone();
2647        let new_entries = self.new_entries_for_fs_update.clone();
2648        let repo_snapshots = self.project.update(cx, |project, cx| {
2649            project.git_store().read(cx).repo_snapshots(cx)
2650        });
2651        self.updating_fs_entries = true;
2652        self.fs_entries_update_task = cx.spawn_in(window, async move |outline_panel, cx| {
2653            if let Some(debounce) = debounce {
2654                cx.background_executor().timer(debounce).await;
2655            }
2656
2657            let mut new_collapsed_entries = HashSet::default();
2658            let mut new_unfolded_dirs = HashMap::default();
2659            let mut root_entries = HashSet::default();
2660            let mut new_excerpts = HashMap::<BufferId, HashMap<ExcerptId, Excerpt>>::default();
2661            let Ok(buffer_excerpts) = outline_panel.update(cx, |outline_panel, cx| {
2662                let git_store = outline_panel.project.read(cx).git_store().clone();
2663                new_collapsed_entries = outline_panel.collapsed_entries.clone();
2664                new_unfolded_dirs = outline_panel.unfolded_dirs.clone();
2665                let multi_buffer_snapshot = active_multi_buffer.read(cx).snapshot(cx);
2666
2667                multi_buffer_snapshot.excerpts().fold(
2668                    HashMap::default(),
2669                    |mut buffer_excerpts, (excerpt_id, buffer_snapshot, excerpt_range)| {
2670                        let buffer_id = buffer_snapshot.remote_id();
2671                        let file = File::from_dyn(buffer_snapshot.file());
2672                        let entry_id = file.and_then(|file| file.project_entry_id(cx));
2673                        let worktree = file.map(|file| file.worktree.read(cx).snapshot());
2674                        let is_new = new_entries.contains(&excerpt_id)
2675                            || !outline_panel.excerpts.contains_key(&buffer_id);
2676                        let is_folded = active_editor.read(cx).is_buffer_folded(buffer_id, cx);
2677                        let status = git_store
2678                            .read(cx)
2679                            .repository_and_path_for_buffer_id(buffer_id, cx)
2680                            .and_then(|(repo, path)| {
2681                                Some(repo.read(cx).status_for_path(&path)?.status)
2682                            });
2683                        buffer_excerpts
2684                            .entry(buffer_id)
2685                            .or_insert_with(|| {
2686                                (is_new, is_folded, Vec::new(), entry_id, worktree, status)
2687                            })
2688                            .2
2689                            .push(excerpt_id);
2690
2691                        let outlines = match outline_panel
2692                            .excerpts
2693                            .get(&buffer_id)
2694                            .and_then(|excerpts| excerpts.get(&excerpt_id))
2695                        {
2696                            Some(old_excerpt) => match &old_excerpt.outlines {
2697                                ExcerptOutlines::Outlines(outlines) => {
2698                                    ExcerptOutlines::Outlines(outlines.clone())
2699                                }
2700                                ExcerptOutlines::Invalidated(_) => ExcerptOutlines::NotFetched,
2701                                ExcerptOutlines::NotFetched => ExcerptOutlines::NotFetched,
2702                            },
2703                            None => ExcerptOutlines::NotFetched,
2704                        };
2705                        new_excerpts.entry(buffer_id).or_default().insert(
2706                            excerpt_id,
2707                            Excerpt {
2708                                range: excerpt_range,
2709                                outlines,
2710                            },
2711                        );
2712                        buffer_excerpts
2713                    },
2714                )
2715            }) else {
2716                return;
2717            };
2718
2719            let Some((
2720                new_collapsed_entries,
2721                new_unfolded_dirs,
2722                new_fs_entries,
2723                new_depth_map,
2724                new_children_count,
2725            )) = cx
2726                .background_spawn(async move {
2727                    let mut processed_external_buffers = HashSet::default();
2728                    let mut new_worktree_entries =
2729                        BTreeMap::<WorktreeId, HashMap<ProjectEntryId, GitEntry>>::default();
2730                    let mut worktree_excerpts = HashMap::<
2731                        WorktreeId,
2732                        HashMap<ProjectEntryId, (BufferId, Vec<ExcerptId>)>,
2733                    >::default();
2734                    let mut external_excerpts = HashMap::default();
2735
2736                    for (buffer_id, (is_new, is_folded, excerpts, entry_id, worktree, status)) in
2737                        buffer_excerpts
2738                    {
2739                        if is_folded {
2740                            match &worktree {
2741                                Some(worktree) => {
2742                                    new_collapsed_entries
2743                                        .insert(CollapsedEntry::File(worktree.id(), buffer_id));
2744                                }
2745                                None => {
2746                                    new_collapsed_entries
2747                                        .insert(CollapsedEntry::ExternalFile(buffer_id));
2748                                }
2749                            }
2750                        } else if is_new {
2751                            match &worktree {
2752                                Some(worktree) => {
2753                                    new_collapsed_entries
2754                                        .remove(&CollapsedEntry::File(worktree.id(), buffer_id));
2755                                }
2756                                None => {
2757                                    new_collapsed_entries
2758                                        .remove(&CollapsedEntry::ExternalFile(buffer_id));
2759                                }
2760                            }
2761                        }
2762
2763                        if let Some(worktree) = worktree {
2764                            let worktree_id = worktree.id();
2765                            let unfolded_dirs = new_unfolded_dirs.entry(worktree_id).or_default();
2766
2767                            match entry_id.and_then(|id| worktree.entry_for_id(id)).cloned() {
2768                                Some(entry) => {
2769                                    let entry = GitEntry {
2770                                        git_summary: status
2771                                            .map(|status| status.summary())
2772                                            .unwrap_or_default(),
2773                                        entry,
2774                                    };
2775                                    let mut traversal = GitTraversal::new(
2776                                        &repo_snapshots,
2777                                        worktree.traverse_from_path(
2778                                            true,
2779                                            true,
2780                                            true,
2781                                            entry.path.as_ref(),
2782                                        ),
2783                                    );
2784
2785                                    let mut entries_to_add = HashMap::default();
2786                                    worktree_excerpts
2787                                        .entry(worktree_id)
2788                                        .or_default()
2789                                        .insert(entry.id, (buffer_id, excerpts));
2790                                    let mut current_entry = entry;
2791                                    loop {
2792                                        if current_entry.is_dir() {
2793                                            let is_root =
2794                                                worktree.root_entry().map(|entry| entry.id)
2795                                                    == Some(current_entry.id);
2796                                            if is_root {
2797                                                root_entries.insert(current_entry.id);
2798                                                if auto_fold_dirs {
2799                                                    unfolded_dirs.insert(current_entry.id);
2800                                                }
2801                                            }
2802                                            if is_new {
2803                                                new_collapsed_entries.remove(&CollapsedEntry::Dir(
2804                                                    worktree_id,
2805                                                    current_entry.id,
2806                                                ));
2807                                            }
2808                                        }
2809
2810                                        let new_entry_added = entries_to_add
2811                                            .insert(current_entry.id, current_entry)
2812                                            .is_none();
2813                                        if new_entry_added
2814                                            && traversal.back_to_parent()
2815                                            && let Some(parent_entry) = traversal.entry()
2816                                        {
2817                                            current_entry = parent_entry.to_owned();
2818                                            continue;
2819                                        }
2820                                        break;
2821                                    }
2822                                    new_worktree_entries
2823                                        .entry(worktree_id)
2824                                        .or_insert_with(HashMap::default)
2825                                        .extend(entries_to_add);
2826                                }
2827                                None => {
2828                                    if processed_external_buffers.insert(buffer_id) {
2829                                        external_excerpts
2830                                            .entry(buffer_id)
2831                                            .or_insert_with(Vec::new)
2832                                            .extend(excerpts);
2833                                    }
2834                                }
2835                            }
2836                        } else if processed_external_buffers.insert(buffer_id) {
2837                            external_excerpts
2838                                .entry(buffer_id)
2839                                .or_insert_with(Vec::new)
2840                                .extend(excerpts);
2841                        }
2842                    }
2843
2844                    let mut new_children_count =
2845                        HashMap::<WorktreeId, HashMap<Arc<Path>, FsChildren>>::default();
2846
2847                    let worktree_entries = new_worktree_entries
2848                        .into_iter()
2849                        .map(|(worktree_id, entries)| {
2850                            let mut entries = entries.into_values().collect::<Vec<_>>();
2851                            entries.sort_by(|a, b| a.path.as_ref().cmp(b.path.as_ref()));
2852                            (worktree_id, entries)
2853                        })
2854                        .flat_map(|(worktree_id, entries)| {
2855                            {
2856                                entries
2857                                    .into_iter()
2858                                    .filter_map(|entry| {
2859                                        if auto_fold_dirs && let Some(parent) = entry.path.parent()
2860                                        {
2861                                            let children = new_children_count
2862                                                .entry(worktree_id)
2863                                                .or_default()
2864                                                .entry(Arc::from(parent))
2865                                                .or_default();
2866                                            if entry.is_dir() {
2867                                                children.dirs += 1;
2868                                            } else {
2869                                                children.files += 1;
2870                                            }
2871                                        }
2872
2873                                        if entry.is_dir() {
2874                                            Some(FsEntry::Directory(FsEntryDirectory {
2875                                                worktree_id,
2876                                                entry,
2877                                            }))
2878                                        } else {
2879                                            let (buffer_id, excerpts) = worktree_excerpts
2880                                                .get_mut(&worktree_id)
2881                                                .and_then(|worktree_excerpts| {
2882                                                    worktree_excerpts.remove(&entry.id)
2883                                                })?;
2884                                            Some(FsEntry::File(FsEntryFile {
2885                                                worktree_id,
2886                                                buffer_id,
2887                                                entry,
2888                                                excerpts,
2889                                            }))
2890                                        }
2891                                    })
2892                                    .collect::<Vec<_>>()
2893                            }
2894                        })
2895                        .collect::<Vec<_>>();
2896
2897                    let mut visited_dirs = Vec::new();
2898                    let mut new_depth_map = HashMap::default();
2899                    let new_visible_entries = external_excerpts
2900                        .into_iter()
2901                        .sorted_by_key(|(id, _)| *id)
2902                        .map(|(buffer_id, excerpts)| {
2903                            FsEntry::ExternalFile(FsEntryExternalFile {
2904                                buffer_id,
2905                                excerpts,
2906                            })
2907                        })
2908                        .chain(worktree_entries)
2909                        .filter(|visible_item| {
2910                            match visible_item {
2911                                FsEntry::Directory(directory) => {
2912                                    let parent_id = back_to_common_visited_parent(
2913                                        &mut visited_dirs,
2914                                        &directory.worktree_id,
2915                                        &directory.entry,
2916                                    );
2917
2918                                    let mut depth = 0;
2919                                    if !root_entries.contains(&directory.entry.id) {
2920                                        if auto_fold_dirs {
2921                                            let children = new_children_count
2922                                                .get(&directory.worktree_id)
2923                                                .and_then(|children_count| {
2924                                                    children_count.get(&directory.entry.path)
2925                                                })
2926                                                .copied()
2927                                                .unwrap_or_default();
2928
2929                                            if !children.may_be_fold_part()
2930                                                || (children.dirs == 0
2931                                                    && visited_dirs
2932                                                        .last()
2933                                                        .map(|(parent_dir_id, _)| {
2934                                                            new_unfolded_dirs
2935                                                                .get(&directory.worktree_id)
2936                                                                .is_none_or(|unfolded_dirs| {
2937                                                                    unfolded_dirs
2938                                                                        .contains(parent_dir_id)
2939                                                                })
2940                                                        })
2941                                                        .unwrap_or(true))
2942                                            {
2943                                                new_unfolded_dirs
2944                                                    .entry(directory.worktree_id)
2945                                                    .or_default()
2946                                                    .insert(directory.entry.id);
2947                                            }
2948                                        }
2949
2950                                        depth = parent_id
2951                                            .and_then(|(worktree_id, id)| {
2952                                                new_depth_map.get(&(worktree_id, id)).copied()
2953                                            })
2954                                            .unwrap_or(0)
2955                                            + 1;
2956                                    };
2957                                    visited_dirs
2958                                        .push((directory.entry.id, directory.entry.path.clone()));
2959                                    new_depth_map
2960                                        .insert((directory.worktree_id, directory.entry.id), depth);
2961                                }
2962                                FsEntry::File(FsEntryFile {
2963                                    worktree_id,
2964                                    entry: file_entry,
2965                                    ..
2966                                }) => {
2967                                    let parent_id = back_to_common_visited_parent(
2968                                        &mut visited_dirs,
2969                                        worktree_id,
2970                                        file_entry,
2971                                    );
2972                                    let depth = if root_entries.contains(&file_entry.id) {
2973                                        0
2974                                    } else {
2975                                        parent_id
2976                                            .and_then(|(worktree_id, id)| {
2977                                                new_depth_map.get(&(worktree_id, id)).copied()
2978                                            })
2979                                            .unwrap_or(0)
2980                                            + 1
2981                                    };
2982                                    new_depth_map.insert((*worktree_id, file_entry.id), depth);
2983                                }
2984                                FsEntry::ExternalFile(..) => {
2985                                    visited_dirs.clear();
2986                                }
2987                            }
2988
2989                            true
2990                        })
2991                        .collect::<Vec<_>>();
2992
2993                    anyhow::Ok((
2994                        new_collapsed_entries,
2995                        new_unfolded_dirs,
2996                        new_visible_entries,
2997                        new_depth_map,
2998                        new_children_count,
2999                    ))
3000                })
3001                .await
3002                .log_err()
3003            else {
3004                return;
3005            };
3006
3007            outline_panel
3008                .update_in(cx, |outline_panel, window, cx| {
3009                    outline_panel.updating_fs_entries = false;
3010                    outline_panel.new_entries_for_fs_update.clear();
3011                    outline_panel.excerpts = new_excerpts;
3012                    outline_panel.collapsed_entries = new_collapsed_entries;
3013                    outline_panel.unfolded_dirs = new_unfolded_dirs;
3014                    outline_panel.fs_entries = new_fs_entries;
3015                    outline_panel.fs_entries_depth = new_depth_map;
3016                    outline_panel.fs_children_count = new_children_count;
3017                    outline_panel.update_non_fs_items(window, cx);
3018
3019                    // Only update cached entries if we don't have outlines to fetch
3020                    // If we do have outlines to fetch, let fetch_outdated_outlines handle the update
3021                    if outline_panel.excerpt_fetch_ranges(cx).is_empty() {
3022                        outline_panel.update_cached_entries(debounce, window, cx);
3023                    }
3024
3025                    cx.notify();
3026                })
3027                .ok();
3028        });
3029    }
3030
3031    fn replace_active_editor(
3032        &mut self,
3033        new_active_item: Box<dyn ItemHandle>,
3034        new_active_editor: Entity<Editor>,
3035        window: &mut Window,
3036        cx: &mut Context<Self>,
3037    ) {
3038        self.clear_previous(window, cx);
3039
3040        let default_expansion_depth =
3041            OutlinePanelSettings::get_global(cx).expand_outlines_with_depth;
3042        // We'll apply the expansion depth after outlines are loaded
3043        self.pending_default_expansion_depth = Some(default_expansion_depth);
3044
3045        let buffer_search_subscription = cx.subscribe_in(
3046            &new_active_editor,
3047            window,
3048            |outline_panel: &mut Self,
3049             _,
3050             e: &SearchEvent,
3051             window: &mut Window,
3052             cx: &mut Context<Self>| {
3053                if matches!(e, SearchEvent::MatchesInvalidated) {
3054                    let update_cached_items = outline_panel.update_search_matches(window, cx);
3055                    if update_cached_items {
3056                        outline_panel.selected_entry.invalidate();
3057                        outline_panel.update_cached_entries(Some(UPDATE_DEBOUNCE), window, cx);
3058                    }
3059                };
3060                outline_panel.autoscroll(cx);
3061            },
3062        );
3063        self.active_item = Some(ActiveItem {
3064            _buffer_search_subscription: buffer_search_subscription,
3065            _editor_subscription: subscribe_for_editor_events(&new_active_editor, window, cx),
3066            item_handle: new_active_item.downgrade_item(),
3067            active_editor: new_active_editor.downgrade(),
3068        });
3069        self.new_entries_for_fs_update
3070            .extend(new_active_editor.read(cx).buffer().read(cx).excerpt_ids());
3071        self.selected_entry.invalidate();
3072        self.update_fs_entries(new_active_editor, None, window, cx);
3073    }
3074
3075    fn clear_previous(&mut self, window: &mut Window, cx: &mut App) {
3076        self.fs_entries_update_task = Task::ready(());
3077        self.outline_fetch_tasks.clear();
3078        self.cached_entries_update_task = Task::ready(());
3079        self.reveal_selection_task = Task::ready(Ok(()));
3080        self.filter_editor
3081            .update(cx, |editor, cx| editor.clear(window, cx));
3082        self.collapsed_entries.clear();
3083        self.unfolded_dirs.clear();
3084        self.active_item = None;
3085        self.fs_entries.clear();
3086        self.fs_entries_depth.clear();
3087        self.fs_children_count.clear();
3088        self.excerpts.clear();
3089        self.cached_entries = Vec::new();
3090        self.selected_entry = SelectedEntry::None;
3091        self.pinned = false;
3092        self.mode = ItemsDisplayMode::Outline;
3093        self.pending_default_expansion_depth = None;
3094    }
3095
3096    fn location_for_editor_selection(
3097        &self,
3098        editor: &Entity<Editor>,
3099        window: &mut Window,
3100        cx: &mut Context<Self>,
3101    ) -> Option<PanelEntry> {
3102        let selection = editor.update(cx, |editor, cx| {
3103            editor.selections.newest::<language::Point>(cx).head()
3104        });
3105        let editor_snapshot = editor.update(cx, |editor, cx| editor.snapshot(window, cx));
3106        let multi_buffer = editor.read(cx).buffer();
3107        let multi_buffer_snapshot = multi_buffer.read(cx).snapshot(cx);
3108        let (excerpt_id, buffer, _) = editor
3109            .read(cx)
3110            .buffer()
3111            .read(cx)
3112            .excerpt_containing(selection, cx)?;
3113        let buffer_id = buffer.read(cx).remote_id();
3114
3115        if editor.read(cx).is_buffer_folded(buffer_id, cx) {
3116            return self
3117                .fs_entries
3118                .iter()
3119                .find(|fs_entry| match fs_entry {
3120                    FsEntry::Directory(..) => false,
3121                    FsEntry::File(FsEntryFile {
3122                        buffer_id: other_buffer_id,
3123                        ..
3124                    })
3125                    | FsEntry::ExternalFile(FsEntryExternalFile {
3126                        buffer_id: other_buffer_id,
3127                        ..
3128                    }) => buffer_id == *other_buffer_id,
3129                })
3130                .cloned()
3131                .map(PanelEntry::Fs);
3132        }
3133
3134        let selection_display_point = selection.to_display_point(&editor_snapshot);
3135
3136        match &self.mode {
3137            ItemsDisplayMode::Search(search_state) => search_state
3138                .matches
3139                .iter()
3140                .rev()
3141                .min_by_key(|&(match_range, _)| {
3142                    let match_display_range =
3143                        match_range.clone().to_display_points(&editor_snapshot);
3144                    let start_distance = if selection_display_point < match_display_range.start {
3145                        match_display_range.start - selection_display_point
3146                    } else {
3147                        selection_display_point - match_display_range.start
3148                    };
3149                    let end_distance = if selection_display_point < match_display_range.end {
3150                        match_display_range.end - selection_display_point
3151                    } else {
3152                        selection_display_point - match_display_range.end
3153                    };
3154                    start_distance + end_distance
3155                })
3156                .and_then(|(closest_range, _)| {
3157                    self.cached_entries.iter().find_map(|cached_entry| {
3158                        if let PanelEntry::Search(SearchEntry { match_range, .. }) =
3159                            &cached_entry.entry
3160                        {
3161                            if match_range == closest_range {
3162                                Some(cached_entry.entry.clone())
3163                            } else {
3164                                None
3165                            }
3166                        } else {
3167                            None
3168                        }
3169                    })
3170                }),
3171            ItemsDisplayMode::Outline => self.outline_location(
3172                buffer_id,
3173                excerpt_id,
3174                multi_buffer_snapshot,
3175                editor_snapshot,
3176                selection_display_point,
3177            ),
3178        }
3179    }
3180
3181    fn outline_location(
3182        &self,
3183        buffer_id: BufferId,
3184        excerpt_id: ExcerptId,
3185        multi_buffer_snapshot: editor::MultiBufferSnapshot,
3186        editor_snapshot: editor::EditorSnapshot,
3187        selection_display_point: DisplayPoint,
3188    ) -> Option<PanelEntry> {
3189        let excerpt_outlines = self
3190            .excerpts
3191            .get(&buffer_id)
3192            .and_then(|excerpts| excerpts.get(&excerpt_id))
3193            .into_iter()
3194            .flat_map(|excerpt| excerpt.iter_outlines())
3195            .flat_map(|outline| {
3196                let start = multi_buffer_snapshot
3197                    .anchor_in_excerpt(excerpt_id, outline.range.start)?
3198                    .to_display_point(&editor_snapshot);
3199                let end = multi_buffer_snapshot
3200                    .anchor_in_excerpt(excerpt_id, outline.range.end)?
3201                    .to_display_point(&editor_snapshot);
3202                Some((start..end, outline))
3203            })
3204            .collect::<Vec<_>>();
3205
3206        let mut matching_outline_indices = Vec::new();
3207        let mut children = HashMap::default();
3208        let mut parents_stack = Vec::<(&Range<DisplayPoint>, &&Outline, usize)>::new();
3209
3210        for (i, (outline_range, outline)) in excerpt_outlines.iter().enumerate() {
3211            if outline_range
3212                .to_inclusive()
3213                .contains(&selection_display_point)
3214            {
3215                matching_outline_indices.push(i);
3216            } else if (outline_range.start.row()..outline_range.end.row())
3217                .to_inclusive()
3218                .contains(&selection_display_point.row())
3219            {
3220                matching_outline_indices.push(i);
3221            }
3222
3223            while let Some((parent_range, parent_outline, _)) = parents_stack.last() {
3224                if parent_outline.depth >= outline.depth
3225                    || !parent_range.contains(&outline_range.start)
3226                {
3227                    parents_stack.pop();
3228                } else {
3229                    break;
3230                }
3231            }
3232            if let Some((_, _, parent_index)) = parents_stack.last_mut() {
3233                children
3234                    .entry(*parent_index)
3235                    .or_insert_with(Vec::new)
3236                    .push(i);
3237            }
3238            parents_stack.push((outline_range, outline, i));
3239        }
3240
3241        let outline_item = matching_outline_indices
3242            .into_iter()
3243            .flat_map(|i| Some((i, excerpt_outlines.get(i)?)))
3244            .filter(|(i, _)| {
3245                children
3246                    .get(i)
3247                    .map(|children| {
3248                        children.iter().all(|child_index| {
3249                            excerpt_outlines
3250                                .get(*child_index)
3251                                .map(|(child_range, _)| child_range.start > selection_display_point)
3252                                .unwrap_or(false)
3253                        })
3254                    })
3255                    .unwrap_or(true)
3256            })
3257            .min_by_key(|(_, (outline_range, outline))| {
3258                let distance_from_start = if outline_range.start > selection_display_point {
3259                    outline_range.start - selection_display_point
3260                } else {
3261                    selection_display_point - outline_range.start
3262                };
3263                let distance_from_end = if outline_range.end > selection_display_point {
3264                    outline_range.end - selection_display_point
3265                } else {
3266                    selection_display_point - outline_range.end
3267                };
3268
3269                (
3270                    cmp::Reverse(outline.depth),
3271                    distance_from_start + distance_from_end,
3272                )
3273            })
3274            .map(|(_, (_, outline))| *outline)
3275            .cloned();
3276
3277        let closest_container = match outline_item {
3278            Some(outline) => PanelEntry::Outline(OutlineEntry::Outline(OutlineEntryOutline {
3279                buffer_id,
3280                excerpt_id,
3281                outline,
3282            })),
3283            None => {
3284                self.cached_entries.iter().rev().find_map(|cached_entry| {
3285                    match &cached_entry.entry {
3286                        PanelEntry::Outline(OutlineEntry::Excerpt(excerpt)) => {
3287                            if excerpt.buffer_id == buffer_id && excerpt.id == excerpt_id {
3288                                Some(cached_entry.entry.clone())
3289                            } else {
3290                                None
3291                            }
3292                        }
3293                        PanelEntry::Fs(
3294                            FsEntry::ExternalFile(FsEntryExternalFile {
3295                                buffer_id: file_buffer_id,
3296                                excerpts: file_excerpts,
3297                            })
3298                            | FsEntry::File(FsEntryFile {
3299                                buffer_id: file_buffer_id,
3300                                excerpts: file_excerpts,
3301                                ..
3302                            }),
3303                        ) => {
3304                            if file_buffer_id == &buffer_id && file_excerpts.contains(&excerpt_id) {
3305                                Some(cached_entry.entry.clone())
3306                            } else {
3307                                None
3308                            }
3309                        }
3310                        _ => None,
3311                    }
3312                })?
3313            }
3314        };
3315        Some(closest_container)
3316    }
3317
3318    fn fetch_outdated_outlines(&mut self, window: &mut Window, cx: &mut Context<Self>) {
3319        let excerpt_fetch_ranges = self.excerpt_fetch_ranges(cx);
3320        if excerpt_fetch_ranges.is_empty() {
3321            return;
3322        }
3323
3324        let syntax_theme = cx.theme().syntax().clone();
3325        let first_update = Arc::new(AtomicBool::new(true));
3326        for (buffer_id, (buffer_snapshot, excerpt_ranges)) in excerpt_fetch_ranges {
3327            for (excerpt_id, excerpt_range) in excerpt_ranges {
3328                let syntax_theme = syntax_theme.clone();
3329                let buffer_snapshot = buffer_snapshot.clone();
3330                let first_update = first_update.clone();
3331                self.outline_fetch_tasks.insert(
3332                    (buffer_id, excerpt_id),
3333                    cx.spawn_in(window, async move |outline_panel, cx| {
3334                        let buffer_language = buffer_snapshot.language().cloned();
3335                        let fetched_outlines = cx
3336                            .background_spawn(async move {
3337                                let mut outlines = buffer_snapshot.outline_items_containing(
3338                                    excerpt_range.context,
3339                                    false,
3340                                    Some(&syntax_theme),
3341                                );
3342                                outlines.retain(|outline| {
3343                                    buffer_language.is_none()
3344                                        || buffer_language.as_ref()
3345                                            == buffer_snapshot.language_at(outline.range.start)
3346                                });
3347
3348                                let outlines_with_children = outlines
3349                                    .windows(2)
3350                                    .filter_map(|window| {
3351                                        let current = &window[0];
3352                                        let next = &window[1];
3353                                        if next.depth > current.depth {
3354                                            Some((current.range.clone(), current.depth))
3355                                        } else {
3356                                            None
3357                                        }
3358                                    })
3359                                    .collect::<HashSet<_>>();
3360
3361                                (outlines, outlines_with_children)
3362                            })
3363                            .await;
3364
3365                        let (fetched_outlines, outlines_with_children) = fetched_outlines;
3366
3367                        outline_panel
3368                            .update_in(cx, |outline_panel, window, cx| {
3369                                let pending_default_depth =
3370                                    outline_panel.pending_default_expansion_depth.take();
3371
3372                                let debounce =
3373                                    if first_update.fetch_and(false, atomic::Ordering::AcqRel) {
3374                                        None
3375                                    } else {
3376                                        Some(UPDATE_DEBOUNCE)
3377                                    };
3378
3379                                if let Some(excerpt) = outline_panel
3380                                    .excerpts
3381                                    .entry(buffer_id)
3382                                    .or_default()
3383                                    .get_mut(&excerpt_id)
3384                                {
3385                                    excerpt.outlines = ExcerptOutlines::Outlines(fetched_outlines);
3386
3387                                    if let Some(default_depth) = pending_default_depth
3388                                        && let ExcerptOutlines::Outlines(outlines) =
3389                                            &excerpt.outlines
3390                                    {
3391                                        outlines
3392                                            .iter()
3393                                            .filter(|outline| {
3394                                                (default_depth == 0
3395                                                    || outline.depth >= default_depth)
3396                                                    && outlines_with_children.contains(&(
3397                                                        outline.range.clone(),
3398                                                        outline.depth,
3399                                                    ))
3400                                            })
3401                                            .for_each(|outline| {
3402                                                outline_panel.collapsed_entries.insert(
3403                                                    CollapsedEntry::Outline(
3404                                                        buffer_id,
3405                                                        excerpt_id,
3406                                                        outline.range.clone(),
3407                                                    ),
3408                                                );
3409                                            });
3410                                    }
3411
3412                                    // Even if no outlines to check, we still need to update cached entries
3413                                    // to show the outline entries that were just fetched
3414                                    outline_panel.update_cached_entries(debounce, window, cx);
3415                                }
3416                            })
3417                            .ok();
3418                    }),
3419                );
3420            }
3421        }
3422    }
3423
3424    fn is_singleton_active(&self, cx: &App) -> bool {
3425        self.active_editor()
3426            .is_some_and(|active_editor| active_editor.read(cx).buffer().read(cx).is_singleton())
3427    }
3428
3429    fn invalidate_outlines(&mut self, ids: &[ExcerptId]) {
3430        self.outline_fetch_tasks.clear();
3431        let mut ids = ids.iter().collect::<HashSet<_>>();
3432        for excerpts in self.excerpts.values_mut() {
3433            ids.retain(|id| {
3434                if let Some(excerpt) = excerpts.get_mut(id) {
3435                    excerpt.invalidate_outlines();
3436                    false
3437                } else {
3438                    true
3439                }
3440            });
3441            if ids.is_empty() {
3442                break;
3443            }
3444        }
3445    }
3446
3447    fn excerpt_fetch_ranges(
3448        &self,
3449        cx: &App,
3450    ) -> HashMap<
3451        BufferId,
3452        (
3453            BufferSnapshot,
3454            HashMap<ExcerptId, ExcerptRange<language::Anchor>>,
3455        ),
3456    > {
3457        self.fs_entries
3458            .iter()
3459            .fold(HashMap::default(), |mut excerpts_to_fetch, fs_entry| {
3460                match fs_entry {
3461                    FsEntry::File(FsEntryFile {
3462                        buffer_id,
3463                        excerpts: file_excerpts,
3464                        ..
3465                    })
3466                    | FsEntry::ExternalFile(FsEntryExternalFile {
3467                        buffer_id,
3468                        excerpts: file_excerpts,
3469                    }) => {
3470                        let excerpts = self.excerpts.get(buffer_id);
3471                        for &file_excerpt in file_excerpts {
3472                            if let Some(excerpt) = excerpts
3473                                .and_then(|excerpts| excerpts.get(&file_excerpt))
3474                                .filter(|excerpt| excerpt.should_fetch_outlines())
3475                            {
3476                                match excerpts_to_fetch.entry(*buffer_id) {
3477                                    hash_map::Entry::Occupied(mut o) => {
3478                                        o.get_mut().1.insert(file_excerpt, excerpt.range.clone());
3479                                    }
3480                                    hash_map::Entry::Vacant(v) => {
3481                                        if let Some(buffer_snapshot) =
3482                                            self.buffer_snapshot_for_id(*buffer_id, cx)
3483                                        {
3484                                            v.insert((buffer_snapshot, HashMap::default()))
3485                                                .1
3486                                                .insert(file_excerpt, excerpt.range.clone());
3487                                        }
3488                                    }
3489                                }
3490                            }
3491                        }
3492                    }
3493                    FsEntry::Directory(..) => {}
3494                }
3495                excerpts_to_fetch
3496            })
3497    }
3498
3499    fn buffer_snapshot_for_id(&self, buffer_id: BufferId, cx: &App) -> Option<BufferSnapshot> {
3500        let editor = self.active_editor()?;
3501        Some(
3502            editor
3503                .read(cx)
3504                .buffer()
3505                .read(cx)
3506                .buffer(buffer_id)?
3507                .read(cx)
3508                .snapshot(),
3509        )
3510    }
3511
3512    fn abs_path(&self, entry: &PanelEntry, cx: &App) -> Option<PathBuf> {
3513        match entry {
3514            PanelEntry::Fs(
3515                FsEntry::File(FsEntryFile { buffer_id, .. })
3516                | FsEntry::ExternalFile(FsEntryExternalFile { buffer_id, .. }),
3517            ) => self
3518                .buffer_snapshot_for_id(*buffer_id, cx)
3519                .and_then(|buffer_snapshot| {
3520                    let file = File::from_dyn(buffer_snapshot.file())?;
3521                    file.worktree.read(cx).absolutize(&file.path).ok()
3522                }),
3523            PanelEntry::Fs(FsEntry::Directory(FsEntryDirectory {
3524                worktree_id, entry, ..
3525            })) => self
3526                .project
3527                .read(cx)
3528                .worktree_for_id(*worktree_id, cx)?
3529                .read(cx)
3530                .absolutize(&entry.path)
3531                .ok(),
3532            PanelEntry::FoldedDirs(FoldedDirsEntry {
3533                worktree_id,
3534                entries: dirs,
3535                ..
3536            }) => dirs.last().and_then(|entry| {
3537                self.project
3538                    .read(cx)
3539                    .worktree_for_id(*worktree_id, cx)
3540                    .and_then(|worktree| worktree.read(cx).absolutize(&entry.path).ok())
3541            }),
3542            PanelEntry::Search(_) | PanelEntry::Outline(..) => None,
3543        }
3544    }
3545
3546    fn relative_path(&self, entry: &FsEntry, cx: &App) -> Option<Arc<Path>> {
3547        match entry {
3548            FsEntry::ExternalFile(FsEntryExternalFile { buffer_id, .. }) => {
3549                let buffer_snapshot = self.buffer_snapshot_for_id(*buffer_id, cx)?;
3550                Some(buffer_snapshot.file()?.path().clone())
3551            }
3552            FsEntry::Directory(FsEntryDirectory { entry, .. }) => Some(entry.path.clone()),
3553            FsEntry::File(FsEntryFile { entry, .. }) => Some(entry.path.clone()),
3554        }
3555    }
3556
3557    fn update_cached_entries(
3558        &mut self,
3559        debounce: Option<Duration>,
3560        window: &mut Window,
3561        cx: &mut Context<OutlinePanel>,
3562    ) {
3563        if !self.active {
3564            return;
3565        }
3566
3567        let is_singleton = self.is_singleton_active(cx);
3568        let query = self.query(cx);
3569        self.updating_cached_entries = true;
3570        self.cached_entries_update_task = cx.spawn_in(window, async move |outline_panel, cx| {
3571            if let Some(debounce) = debounce {
3572                cx.background_executor().timer(debounce).await;
3573            }
3574            let Some(new_cached_entries) = outline_panel
3575                .update_in(cx, |outline_panel, window, cx| {
3576                    outline_panel.generate_cached_entries(is_singleton, query, window, cx)
3577                })
3578                .ok()
3579            else {
3580                return;
3581            };
3582            let (new_cached_entries, max_width_item_index) = new_cached_entries.await;
3583            outline_panel
3584                .update_in(cx, |outline_panel, window, cx| {
3585                    outline_panel.cached_entries = new_cached_entries;
3586                    outline_panel.max_width_item_index = max_width_item_index;
3587                    if (outline_panel.selected_entry.is_invalidated()
3588                        || matches!(outline_panel.selected_entry, SelectedEntry::None))
3589                        && let Some(new_selected_entry) =
3590                            outline_panel.active_editor().and_then(|active_editor| {
3591                                outline_panel.location_for_editor_selection(
3592                                    &active_editor,
3593                                    window,
3594                                    cx,
3595                                )
3596                            })
3597                    {
3598                        outline_panel.select_entry(new_selected_entry, false, window, cx);
3599                    }
3600
3601                    outline_panel.autoscroll(cx);
3602                    outline_panel.updating_cached_entries = false;
3603                    cx.notify();
3604                })
3605                .ok();
3606        });
3607    }
3608
3609    fn generate_cached_entries(
3610        &self,
3611        is_singleton: bool,
3612        query: Option<String>,
3613        window: &mut Window,
3614        cx: &mut Context<Self>,
3615    ) -> Task<(Vec<CachedEntry>, Option<usize>)> {
3616        let project = self.project.clone();
3617        let Some(active_editor) = self.active_editor() else {
3618            return Task::ready((Vec::new(), None));
3619        };
3620        cx.spawn_in(window, async move |outline_panel, cx| {
3621            let mut generation_state = GenerationState::default();
3622
3623            let Ok(()) = outline_panel.update(cx, |outline_panel, cx| {
3624                let auto_fold_dirs = OutlinePanelSettings::get_global(cx).auto_fold_dirs;
3625                let mut folded_dirs_entry = None::<(usize, FoldedDirsEntry)>;
3626                let track_matches = query.is_some();
3627
3628                #[derive(Debug)]
3629                struct ParentStats {
3630                    path: Arc<Path>,
3631                    folded: bool,
3632                    expanded: bool,
3633                    depth: usize,
3634                }
3635                let mut parent_dirs = Vec::<ParentStats>::new();
3636                for entry in outline_panel.fs_entries.clone() {
3637                    let is_expanded = outline_panel.is_expanded(&entry);
3638                    let (depth, should_add) = match &entry {
3639                        FsEntry::Directory(directory_entry) => {
3640                            let mut should_add = true;
3641                            let is_root = project
3642                                .read(cx)
3643                                .worktree_for_id(directory_entry.worktree_id, cx)
3644                                .is_some_and(|worktree| {
3645                                    worktree.read(cx).root_entry() == Some(&directory_entry.entry)
3646                                });
3647                            let folded = auto_fold_dirs
3648                                && !is_root
3649                                && outline_panel
3650                                    .unfolded_dirs
3651                                    .get(&directory_entry.worktree_id)
3652                                    .is_none_or(|unfolded_dirs| {
3653                                        !unfolded_dirs.contains(&directory_entry.entry.id)
3654                                    });
3655                            let fs_depth = outline_panel
3656                                .fs_entries_depth
3657                                .get(&(directory_entry.worktree_id, directory_entry.entry.id))
3658                                .copied()
3659                                .unwrap_or(0);
3660                            while let Some(parent) = parent_dirs.last() {
3661                                if !is_root && directory_entry.entry.path.starts_with(&parent.path)
3662                                {
3663                                    break;
3664                                }
3665                                parent_dirs.pop();
3666                            }
3667                            let auto_fold = match parent_dirs.last() {
3668                                Some(parent) => {
3669                                    parent.folded
3670                                        && Some(parent.path.as_ref())
3671                                            == directory_entry.entry.path.parent()
3672                                        && outline_panel
3673                                            .fs_children_count
3674                                            .get(&directory_entry.worktree_id)
3675                                            .and_then(|entries| {
3676                                                entries.get(&directory_entry.entry.path)
3677                                            })
3678                                            .copied()
3679                                            .unwrap_or_default()
3680                                            .may_be_fold_part()
3681                                }
3682                                None => false,
3683                            };
3684                            let folded = folded || auto_fold;
3685                            let (depth, parent_expanded, parent_folded) = match parent_dirs.last() {
3686                                Some(parent) => {
3687                                    let parent_folded = parent.folded;
3688                                    let parent_expanded = parent.expanded;
3689                                    let new_depth = if parent_folded {
3690                                        parent.depth
3691                                    } else {
3692                                        parent.depth + 1
3693                                    };
3694                                    parent_dirs.push(ParentStats {
3695                                        path: directory_entry.entry.path.clone(),
3696                                        folded,
3697                                        expanded: parent_expanded && is_expanded,
3698                                        depth: new_depth,
3699                                    });
3700                                    (new_depth, parent_expanded, parent_folded)
3701                                }
3702                                None => {
3703                                    parent_dirs.push(ParentStats {
3704                                        path: directory_entry.entry.path.clone(),
3705                                        folded,
3706                                        expanded: is_expanded,
3707                                        depth: fs_depth,
3708                                    });
3709                                    (fs_depth, true, false)
3710                                }
3711                            };
3712
3713                            if let Some((folded_depth, mut folded_dirs)) = folded_dirs_entry.take()
3714                            {
3715                                if folded
3716                                    && directory_entry.worktree_id == folded_dirs.worktree_id
3717                                    && directory_entry.entry.path.parent()
3718                                        == folded_dirs
3719                                            .entries
3720                                            .last()
3721                                            .map(|entry| entry.path.as_ref())
3722                                {
3723                                    folded_dirs.entries.push(directory_entry.entry.clone());
3724                                    folded_dirs_entry = Some((folded_depth, folded_dirs))
3725                                } else {
3726                                    if !is_singleton {
3727                                        let start_of_collapsed_dir_sequence = !parent_expanded
3728                                            && parent_dirs
3729                                                .iter()
3730                                                .rev()
3731                                                .nth(folded_dirs.entries.len() + 1)
3732                                                .is_none_or(|parent| parent.expanded);
3733                                        if start_of_collapsed_dir_sequence
3734                                            || parent_expanded
3735                                            || query.is_some()
3736                                        {
3737                                            if parent_folded {
3738                                                folded_dirs
3739                                                    .entries
3740                                                    .push(directory_entry.entry.clone());
3741                                                should_add = false;
3742                                            }
3743                                            let new_folded_dirs =
3744                                                PanelEntry::FoldedDirs(folded_dirs.clone());
3745                                            outline_panel.push_entry(
3746                                                &mut generation_state,
3747                                                track_matches,
3748                                                new_folded_dirs,
3749                                                folded_depth,
3750                                                cx,
3751                                            );
3752                                        }
3753                                    }
3754
3755                                    folded_dirs_entry = if parent_folded {
3756                                        None
3757                                    } else {
3758                                        Some((
3759                                            depth,
3760                                            FoldedDirsEntry {
3761                                                worktree_id: directory_entry.worktree_id,
3762                                                entries: vec![directory_entry.entry.clone()],
3763                                            },
3764                                        ))
3765                                    };
3766                                }
3767                            } else if folded {
3768                                folded_dirs_entry = Some((
3769                                    depth,
3770                                    FoldedDirsEntry {
3771                                        worktree_id: directory_entry.worktree_id,
3772                                        entries: vec![directory_entry.entry.clone()],
3773                                    },
3774                                ));
3775                            }
3776
3777                            let should_add =
3778                                should_add && parent_expanded && folded_dirs_entry.is_none();
3779                            (depth, should_add)
3780                        }
3781                        FsEntry::ExternalFile(..) => {
3782                            if let Some((folded_depth, folded_dir)) = folded_dirs_entry.take() {
3783                                let parent_expanded = parent_dirs
3784                                    .iter()
3785                                    .rev()
3786                                    .find(|parent| {
3787                                        folded_dir
3788                                            .entries
3789                                            .iter()
3790                                            .all(|entry| entry.path != parent.path)
3791                                    })
3792                                    .is_none_or(|parent| parent.expanded);
3793                                if !is_singleton && (parent_expanded || query.is_some()) {
3794                                    outline_panel.push_entry(
3795                                        &mut generation_state,
3796                                        track_matches,
3797                                        PanelEntry::FoldedDirs(folded_dir),
3798                                        folded_depth,
3799                                        cx,
3800                                    );
3801                                }
3802                            }
3803                            parent_dirs.clear();
3804                            (0, true)
3805                        }
3806                        FsEntry::File(file) => {
3807                            if let Some((folded_depth, folded_dirs)) = folded_dirs_entry.take() {
3808                                let parent_expanded = parent_dirs
3809                                    .iter()
3810                                    .rev()
3811                                    .find(|parent| {
3812                                        folded_dirs
3813                                            .entries
3814                                            .iter()
3815                                            .all(|entry| entry.path != parent.path)
3816                                    })
3817                                    .is_none_or(|parent| parent.expanded);
3818                                if !is_singleton && (parent_expanded || query.is_some()) {
3819                                    outline_panel.push_entry(
3820                                        &mut generation_state,
3821                                        track_matches,
3822                                        PanelEntry::FoldedDirs(folded_dirs),
3823                                        folded_depth,
3824                                        cx,
3825                                    );
3826                                }
3827                            }
3828
3829                            let fs_depth = outline_panel
3830                                .fs_entries_depth
3831                                .get(&(file.worktree_id, file.entry.id))
3832                                .copied()
3833                                .unwrap_or(0);
3834                            while let Some(parent) = parent_dirs.last() {
3835                                if file.entry.path.starts_with(&parent.path) {
3836                                    break;
3837                                }
3838                                parent_dirs.pop();
3839                            }
3840                            match parent_dirs.last() {
3841                                Some(parent) => {
3842                                    let new_depth = parent.depth + 1;
3843                                    (new_depth, parent.expanded)
3844                                }
3845                                None => (fs_depth, true),
3846                            }
3847                        }
3848                    };
3849
3850                    if !is_singleton
3851                        && (should_add || (query.is_some() && folded_dirs_entry.is_none()))
3852                    {
3853                        outline_panel.push_entry(
3854                            &mut generation_state,
3855                            track_matches,
3856                            PanelEntry::Fs(entry.clone()),
3857                            depth,
3858                            cx,
3859                        );
3860                    }
3861
3862                    match outline_panel.mode {
3863                        ItemsDisplayMode::Search(_) => {
3864                            if is_singleton || query.is_some() || (should_add && is_expanded) {
3865                                outline_panel.add_search_entries(
3866                                    &mut generation_state,
3867                                    &active_editor,
3868                                    entry.clone(),
3869                                    depth,
3870                                    query.clone(),
3871                                    is_singleton,
3872                                    cx,
3873                                );
3874                            }
3875                        }
3876                        ItemsDisplayMode::Outline => {
3877                            let excerpts_to_consider =
3878                                if is_singleton || query.is_some() || (should_add && is_expanded) {
3879                                    match &entry {
3880                                        FsEntry::File(FsEntryFile {
3881                                            buffer_id,
3882                                            excerpts,
3883                                            ..
3884                                        })
3885                                        | FsEntry::ExternalFile(FsEntryExternalFile {
3886                                            buffer_id,
3887                                            excerpts,
3888                                            ..
3889                                        }) => Some((*buffer_id, excerpts)),
3890                                        _ => None,
3891                                    }
3892                                } else {
3893                                    None
3894                                };
3895                            if let Some((buffer_id, entry_excerpts)) = excerpts_to_consider
3896                                && !active_editor.read(cx).is_buffer_folded(buffer_id, cx)
3897                            {
3898                                outline_panel.add_excerpt_entries(
3899                                    &mut generation_state,
3900                                    buffer_id,
3901                                    entry_excerpts,
3902                                    depth,
3903                                    track_matches,
3904                                    is_singleton,
3905                                    query.as_deref(),
3906                                    cx,
3907                                );
3908                            }
3909                        }
3910                    }
3911
3912                    if is_singleton
3913                        && matches!(entry, FsEntry::File(..) | FsEntry::ExternalFile(..))
3914                        && !generation_state.entries.iter().any(|item| {
3915                            matches!(item.entry, PanelEntry::Outline(..) | PanelEntry::Search(_))
3916                        })
3917                    {
3918                        outline_panel.push_entry(
3919                            &mut generation_state,
3920                            track_matches,
3921                            PanelEntry::Fs(entry.clone()),
3922                            0,
3923                            cx,
3924                        );
3925                    }
3926                }
3927
3928                if let Some((folded_depth, folded_dirs)) = folded_dirs_entry.take() {
3929                    let parent_expanded = parent_dirs
3930                        .iter()
3931                        .rev()
3932                        .find(|parent| {
3933                            folded_dirs
3934                                .entries
3935                                .iter()
3936                                .all(|entry| entry.path != parent.path)
3937                        })
3938                        .is_none_or(|parent| parent.expanded);
3939                    if parent_expanded || query.is_some() {
3940                        outline_panel.push_entry(
3941                            &mut generation_state,
3942                            track_matches,
3943                            PanelEntry::FoldedDirs(folded_dirs),
3944                            folded_depth,
3945                            cx,
3946                        );
3947                    }
3948                }
3949            }) else {
3950                return (Vec::new(), None);
3951            };
3952
3953            let Some(query) = query else {
3954                return (
3955                    generation_state.entries,
3956                    generation_state
3957                        .max_width_estimate_and_index
3958                        .map(|(_, index)| index),
3959                );
3960            };
3961
3962            let mut matched_ids = match_strings(
3963                &generation_state.match_candidates,
3964                &query,
3965                true,
3966                true,
3967                usize::MAX,
3968                &AtomicBool::default(),
3969                cx.background_executor().clone(),
3970            )
3971            .await
3972            .into_iter()
3973            .map(|string_match| (string_match.candidate_id, string_match))
3974            .collect::<HashMap<_, _>>();
3975
3976            let mut id = 0;
3977            generation_state.entries.retain_mut(|cached_entry| {
3978                let retain = match matched_ids.remove(&id) {
3979                    Some(string_match) => {
3980                        cached_entry.string_match = Some(string_match);
3981                        true
3982                    }
3983                    None => false,
3984                };
3985                id += 1;
3986                retain
3987            });
3988
3989            (
3990                generation_state.entries,
3991                generation_state
3992                    .max_width_estimate_and_index
3993                    .map(|(_, index)| index),
3994            )
3995        })
3996    }
3997
3998    fn push_entry(
3999        &self,
4000        state: &mut GenerationState,
4001        track_matches: bool,
4002        entry: PanelEntry,
4003        depth: usize,
4004        cx: &mut App,
4005    ) {
4006        let entry = if let PanelEntry::FoldedDirs(folded_dirs_entry) = &entry {
4007            match folded_dirs_entry.entries.len() {
4008                0 => {
4009                    debug_panic!("Empty folded dirs receiver");
4010                    return;
4011                }
4012                1 => PanelEntry::Fs(FsEntry::Directory(FsEntryDirectory {
4013                    worktree_id: folded_dirs_entry.worktree_id,
4014                    entry: folded_dirs_entry.entries[0].clone(),
4015                })),
4016                _ => entry,
4017            }
4018        } else {
4019            entry
4020        };
4021
4022        if track_matches {
4023            let id = state.entries.len();
4024            match &entry {
4025                PanelEntry::Fs(fs_entry) => {
4026                    if let Some(file_name) =
4027                        self.relative_path(fs_entry, cx).as_deref().map(file_name)
4028                    {
4029                        state
4030                            .match_candidates
4031                            .push(StringMatchCandidate::new(id, &file_name));
4032                    }
4033                }
4034                PanelEntry::FoldedDirs(folded_dir_entry) => {
4035                    let dir_names = self.dir_names_string(
4036                        &folded_dir_entry.entries,
4037                        folded_dir_entry.worktree_id,
4038                        cx,
4039                    );
4040                    {
4041                        state
4042                            .match_candidates
4043                            .push(StringMatchCandidate::new(id, &dir_names));
4044                    }
4045                }
4046                PanelEntry::Outline(OutlineEntry::Outline(outline_entry)) => state
4047                    .match_candidates
4048                    .push(StringMatchCandidate::new(id, &outline_entry.outline.text)),
4049                PanelEntry::Outline(OutlineEntry::Excerpt(_)) => {}
4050                PanelEntry::Search(new_search_entry) => {
4051                    if let Some(search_data) = new_search_entry.render_data.get() {
4052                        state
4053                            .match_candidates
4054                            .push(StringMatchCandidate::new(id, &search_data.context_text));
4055                    }
4056                }
4057            }
4058        }
4059
4060        let width_estimate = self.width_estimate(depth, &entry, cx);
4061        if Some(width_estimate)
4062            > state
4063                .max_width_estimate_and_index
4064                .map(|(estimate, _)| estimate)
4065        {
4066            state.max_width_estimate_and_index = Some((width_estimate, state.entries.len()));
4067        }
4068        state.entries.push(CachedEntry {
4069            depth,
4070            entry,
4071            string_match: None,
4072        });
4073    }
4074
4075    fn dir_names_string(&self, entries: &[GitEntry], worktree_id: WorktreeId, cx: &App) -> String {
4076        let dir_names_segment = entries
4077            .iter()
4078            .map(|entry| self.entry_name(&worktree_id, entry, cx))
4079            .collect::<PathBuf>();
4080        dir_names_segment.to_string_lossy().to_string()
4081    }
4082
4083    fn query(&self, cx: &App) -> Option<String> {
4084        let query = self.filter_editor.read(cx).text(cx);
4085        if query.trim().is_empty() {
4086            None
4087        } else {
4088            Some(query)
4089        }
4090    }
4091
4092    fn is_expanded(&self, entry: &FsEntry) -> bool {
4093        let entry_to_check = match entry {
4094            FsEntry::ExternalFile(FsEntryExternalFile { buffer_id, .. }) => {
4095                CollapsedEntry::ExternalFile(*buffer_id)
4096            }
4097            FsEntry::File(FsEntryFile {
4098                worktree_id,
4099                buffer_id,
4100                ..
4101            }) => CollapsedEntry::File(*worktree_id, *buffer_id),
4102            FsEntry::Directory(FsEntryDirectory {
4103                worktree_id, entry, ..
4104            }) => CollapsedEntry::Dir(*worktree_id, entry.id),
4105        };
4106        !self.collapsed_entries.contains(&entry_to_check)
4107    }
4108
4109    fn update_non_fs_items(&mut self, window: &mut Window, cx: &mut Context<OutlinePanel>) -> bool {
4110        if !self.active {
4111            return false;
4112        }
4113
4114        let mut update_cached_items = false;
4115        update_cached_items |= self.update_search_matches(window, cx);
4116        self.fetch_outdated_outlines(window, cx);
4117        if update_cached_items {
4118            self.selected_entry.invalidate();
4119        }
4120        update_cached_items
4121    }
4122
4123    fn update_search_matches(
4124        &mut self,
4125        window: &mut Window,
4126        cx: &mut Context<OutlinePanel>,
4127    ) -> bool {
4128        if !self.active {
4129            return false;
4130        }
4131
4132        let project_search = self
4133            .active_item()
4134            .and_then(|item| item.downcast::<ProjectSearchView>());
4135        let project_search_matches = project_search
4136            .as_ref()
4137            .map(|project_search| project_search.read(cx).get_matches(cx))
4138            .unwrap_or_default();
4139
4140        let buffer_search = self
4141            .active_item()
4142            .as_deref()
4143            .and_then(|active_item| {
4144                self.workspace
4145                    .upgrade()
4146                    .and_then(|workspace| workspace.read(cx).pane_for(active_item))
4147            })
4148            .and_then(|pane| {
4149                pane.read(cx)
4150                    .toolbar()
4151                    .read(cx)
4152                    .item_of_type::<BufferSearchBar>()
4153            });
4154        let buffer_search_matches = self
4155            .active_editor()
4156            .map(|active_editor| {
4157                active_editor.update(cx, |editor, cx| editor.get_matches(window, cx))
4158            })
4159            .unwrap_or_default();
4160
4161        let mut update_cached_entries = false;
4162        if buffer_search_matches.is_empty() && project_search_matches.is_empty() {
4163            if matches!(self.mode, ItemsDisplayMode::Search(_)) {
4164                self.mode = ItemsDisplayMode::Outline;
4165                update_cached_entries = true;
4166            }
4167        } else {
4168            let (kind, new_search_matches, new_search_query) = if buffer_search_matches.is_empty() {
4169                (
4170                    SearchKind::Project,
4171                    project_search_matches,
4172                    project_search
4173                        .map(|project_search| project_search.read(cx).search_query_text(cx))
4174                        .unwrap_or_default(),
4175                )
4176            } else {
4177                (
4178                    SearchKind::Buffer,
4179                    buffer_search_matches,
4180                    buffer_search
4181                        .map(|buffer_search| buffer_search.read(cx).query(cx))
4182                        .unwrap_or_default(),
4183                )
4184            };
4185
4186            let mut previous_matches = HashMap::default();
4187            update_cached_entries = match &mut self.mode {
4188                ItemsDisplayMode::Search(current_search_state) => {
4189                    let update = current_search_state.query != new_search_query
4190                        || current_search_state.kind != kind
4191                        || current_search_state.matches.is_empty()
4192                        || current_search_state.matches.iter().enumerate().any(
4193                            |(i, (match_range, _))| new_search_matches.get(i) != Some(match_range),
4194                        );
4195                    if current_search_state.kind == kind {
4196                        previous_matches.extend(current_search_state.matches.drain(..));
4197                    }
4198                    update
4199                }
4200                ItemsDisplayMode::Outline => true,
4201            };
4202            self.mode = ItemsDisplayMode::Search(SearchState::new(
4203                kind,
4204                new_search_query,
4205                previous_matches,
4206                new_search_matches,
4207                cx.theme().syntax().clone(),
4208                window,
4209                cx,
4210            ));
4211        }
4212        update_cached_entries
4213    }
4214
4215    fn add_excerpt_entries(
4216        &mut self,
4217        state: &mut GenerationState,
4218        buffer_id: BufferId,
4219        entries_to_add: &[ExcerptId],
4220        parent_depth: usize,
4221        track_matches: bool,
4222        is_singleton: bool,
4223        query: Option<&str>,
4224        cx: &mut Context<Self>,
4225    ) {
4226        if let Some(excerpts) = self.excerpts.get(&buffer_id) {
4227            let buffer_snapshot = self.buffer_snapshot_for_id(buffer_id, cx);
4228
4229            for &excerpt_id in entries_to_add {
4230                let Some(excerpt) = excerpts.get(&excerpt_id) else {
4231                    continue;
4232                };
4233                let excerpt_depth = parent_depth + 1;
4234                self.push_entry(
4235                    state,
4236                    track_matches,
4237                    PanelEntry::Outline(OutlineEntry::Excerpt(OutlineEntryExcerpt {
4238                        buffer_id,
4239                        id: excerpt_id,
4240                        range: excerpt.range.clone(),
4241                    })),
4242                    excerpt_depth,
4243                    cx,
4244                );
4245
4246                let mut outline_base_depth = excerpt_depth + 1;
4247                if is_singleton {
4248                    outline_base_depth = 0;
4249                    state.clear();
4250                } else if query.is_none()
4251                    && self
4252                        .collapsed_entries
4253                        .contains(&CollapsedEntry::Excerpt(buffer_id, excerpt_id))
4254                {
4255                    continue;
4256                }
4257
4258                let mut last_depth_at_level: Vec<Option<Range<Anchor>>> = vec![None; 10];
4259
4260                let all_outlines: Vec<_> = excerpt.iter_outlines().collect();
4261
4262                let mut outline_has_children = HashMap::default();
4263                let mut visible_outlines = Vec::new();
4264                let mut collapsed_state: Option<(usize, Range<Anchor>)> = None;
4265
4266                for (i, &outline) in all_outlines.iter().enumerate() {
4267                    let has_children = all_outlines
4268                        .get(i + 1)
4269                        .map(|next| next.depth > outline.depth)
4270                        .unwrap_or(false);
4271
4272                    outline_has_children
4273                        .insert((outline.range.clone(), outline.depth), has_children);
4274
4275                    let mut should_include = true;
4276
4277                    if let Some((collapsed_depth, collapsed_range)) = &collapsed_state {
4278                        if outline.depth <= *collapsed_depth {
4279                            collapsed_state = None;
4280                        } else if let Some(buffer_snapshot) = buffer_snapshot.as_ref() {
4281                            let outline_start = outline.range.start;
4282                            if outline_start
4283                                .cmp(&collapsed_range.start, buffer_snapshot)
4284                                .is_ge()
4285                                && outline_start
4286                                    .cmp(&collapsed_range.end, buffer_snapshot)
4287                                    .is_lt()
4288                            {
4289                                should_include = false; // Skip - inside collapsed range
4290                            } else {
4291                                collapsed_state = None;
4292                            }
4293                        }
4294                    }
4295
4296                    // Check if this outline itself is collapsed
4297                    if should_include
4298                        && self.collapsed_entries.contains(&CollapsedEntry::Outline(
4299                            buffer_id,
4300                            excerpt_id,
4301                            outline.range.clone(),
4302                        ))
4303                    {
4304                        collapsed_state = Some((outline.depth, outline.range.clone()));
4305                    }
4306
4307                    if should_include {
4308                        visible_outlines.push(outline);
4309                    }
4310                }
4311
4312                self.outline_children_cache
4313                    .entry(buffer_id)
4314                    .or_default()
4315                    .extend(outline_has_children);
4316
4317                for outline in visible_outlines {
4318                    let outline_entry = OutlineEntryOutline {
4319                        buffer_id,
4320                        excerpt_id,
4321                        outline: outline.clone(),
4322                    };
4323
4324                    if outline.depth < last_depth_at_level.len() {
4325                        last_depth_at_level[outline.depth] = Some(outline.range.clone());
4326                        // Clear deeper levels when we go back to a shallower depth
4327                        for d in (outline.depth + 1)..last_depth_at_level.len() {
4328                            last_depth_at_level[d] = None;
4329                        }
4330                    }
4331
4332                    self.push_entry(
4333                        state,
4334                        track_matches,
4335                        PanelEntry::Outline(OutlineEntry::Outline(outline_entry)),
4336                        outline_base_depth + outline.depth,
4337                        cx,
4338                    );
4339                }
4340            }
4341        }
4342    }
4343
4344    fn add_search_entries(
4345        &mut self,
4346        state: &mut GenerationState,
4347        active_editor: &Entity<Editor>,
4348        parent_entry: FsEntry,
4349        parent_depth: usize,
4350        filter_query: Option<String>,
4351        is_singleton: bool,
4352        cx: &mut Context<Self>,
4353    ) {
4354        let ItemsDisplayMode::Search(search_state) = &mut self.mode else {
4355            return;
4356        };
4357
4358        let kind = search_state.kind;
4359        let related_excerpts = match &parent_entry {
4360            FsEntry::Directory(_) => return,
4361            FsEntry::ExternalFile(external) => &external.excerpts,
4362            FsEntry::File(file) => &file.excerpts,
4363        }
4364        .iter()
4365        .copied()
4366        .collect::<HashSet<_>>();
4367
4368        let depth = if is_singleton { 0 } else { parent_depth + 1 };
4369        let new_search_matches = search_state
4370            .matches
4371            .iter()
4372            .filter(|(match_range, _)| {
4373                related_excerpts.contains(&match_range.start.excerpt_id)
4374                    || related_excerpts.contains(&match_range.end.excerpt_id)
4375            })
4376            .filter(|(match_range, _)| {
4377                let editor = active_editor.read(cx);
4378                let snapshot = editor.buffer().read(cx).snapshot(cx);
4379                if let Some(buffer_id) = snapshot.buffer_id_for_anchor(match_range.start)
4380                    && editor.is_buffer_folded(buffer_id, cx)
4381                {
4382                    return false;
4383                }
4384                if let Some(buffer_id) = snapshot.buffer_id_for_anchor(match_range.end)
4385                    && editor.is_buffer_folded(buffer_id, cx)
4386                {
4387                    return false;
4388                }
4389                true
4390            });
4391
4392        let new_search_entries = new_search_matches
4393            .map(|(match_range, search_data)| SearchEntry {
4394                match_range: match_range.clone(),
4395                kind,
4396                render_data: Arc::clone(search_data),
4397            })
4398            .collect::<Vec<_>>();
4399        for new_search_entry in new_search_entries {
4400            self.push_entry(
4401                state,
4402                filter_query.is_some(),
4403                PanelEntry::Search(new_search_entry),
4404                depth,
4405                cx,
4406            );
4407        }
4408    }
4409
4410    fn active_editor(&self) -> Option<Entity<Editor>> {
4411        self.active_item.as_ref()?.active_editor.upgrade()
4412    }
4413
4414    fn active_item(&self) -> Option<Box<dyn ItemHandle>> {
4415        self.active_item.as_ref()?.item_handle.upgrade()
4416    }
4417
4418    fn should_replace_active_item(&self, new_active_item: &dyn ItemHandle) -> bool {
4419        self.active_item().is_none_or(|active_item| {
4420            !self.pinned && active_item.item_id() != new_active_item.item_id()
4421        })
4422    }
4423
4424    pub fn toggle_active_editor_pin(
4425        &mut self,
4426        _: &ToggleActiveEditorPin,
4427        window: &mut Window,
4428        cx: &mut Context<Self>,
4429    ) {
4430        self.pinned = !self.pinned;
4431        if !self.pinned
4432            && let Some((active_item, active_editor)) = self
4433                .workspace
4434                .upgrade()
4435                .and_then(|workspace| workspace_active_editor(workspace.read(cx), cx))
4436            && self.should_replace_active_item(active_item.as_ref())
4437        {
4438            self.replace_active_editor(active_item, active_editor, window, cx);
4439        }
4440
4441        cx.notify();
4442    }
4443
4444    fn selected_entry(&self) -> Option<&PanelEntry> {
4445        match &self.selected_entry {
4446            SelectedEntry::Invalidated(entry) => entry.as_ref(),
4447            SelectedEntry::Valid(entry, _) => Some(entry),
4448            SelectedEntry::None => None,
4449        }
4450    }
4451
4452    fn select_entry(
4453        &mut self,
4454        entry: PanelEntry,
4455        focus: bool,
4456        window: &mut Window,
4457        cx: &mut Context<Self>,
4458    ) {
4459        if focus {
4460            self.focus_handle.focus(window);
4461        }
4462        let ix = self
4463            .cached_entries
4464            .iter()
4465            .enumerate()
4466            .find(|(_, cached_entry)| &cached_entry.entry == &entry)
4467            .map(|(i, _)| i)
4468            .unwrap_or_default();
4469
4470        self.selected_entry = SelectedEntry::Valid(entry, ix);
4471
4472        self.autoscroll(cx);
4473        cx.notify();
4474    }
4475
4476    fn width_estimate(&self, depth: usize, entry: &PanelEntry, cx: &App) -> u64 {
4477        let item_text_chars = match entry {
4478            PanelEntry::Fs(FsEntry::ExternalFile(external)) => self
4479                .buffer_snapshot_for_id(external.buffer_id, cx)
4480                .and_then(|snapshot| {
4481                    Some(snapshot.file()?.path().file_name()?.to_string_lossy().len())
4482                })
4483                .unwrap_or_default(),
4484            PanelEntry::Fs(FsEntry::Directory(directory)) => directory
4485                .entry
4486                .path
4487                .file_name()
4488                .map(|name| name.to_string_lossy().len())
4489                .unwrap_or_default(),
4490            PanelEntry::Fs(FsEntry::File(file)) => file
4491                .entry
4492                .path
4493                .file_name()
4494                .map(|name| name.to_string_lossy().len())
4495                .unwrap_or_default(),
4496            PanelEntry::FoldedDirs(folded_dirs) => {
4497                folded_dirs
4498                    .entries
4499                    .iter()
4500                    .map(|dir| {
4501                        dir.path
4502                            .file_name()
4503                            .map(|name| name.to_string_lossy().len())
4504                            .unwrap_or_default()
4505                    })
4506                    .sum::<usize>()
4507                    + folded_dirs.entries.len().saturating_sub(1) * MAIN_SEPARATOR_STR.len()
4508            }
4509            PanelEntry::Outline(OutlineEntry::Excerpt(excerpt)) => self
4510                .excerpt_label(excerpt.buffer_id, &excerpt.range, cx)
4511                .map(|label| label.len())
4512                .unwrap_or_default(),
4513            PanelEntry::Outline(OutlineEntry::Outline(entry)) => entry.outline.text.len(),
4514            PanelEntry::Search(search) => search
4515                .render_data
4516                .get()
4517                .map(|data| data.context_text.len())
4518                .unwrap_or_default(),
4519        };
4520
4521        (item_text_chars + depth) as u64
4522    }
4523
4524    fn render_main_contents(
4525        &mut self,
4526        query: Option<String>,
4527        show_indent_guides: bool,
4528        indent_size: f32,
4529        window: &mut Window,
4530        cx: &mut Context<Self>,
4531    ) -> impl IntoElement {
4532        let contents = if self.cached_entries.is_empty() {
4533            let header = if self.updating_fs_entries || self.updating_cached_entries {
4534                None
4535            } else if query.is_some() {
4536                Some("No matches for query")
4537            } else {
4538                Some("No outlines available")
4539            };
4540
4541            v_flex()
4542                .id("empty-outline-state")
4543                .flex_1()
4544                .justify_center()
4545                .size_full()
4546                .when_some(header, |panel, header| {
4547                    panel
4548                        .child(h_flex().justify_center().child(Label::new(header)))
4549                        .when_some(query.clone(), |panel, query| {
4550                            panel.child(h_flex().justify_center().child(Label::new(query)))
4551                        })
4552                        .child(
4553                            h_flex()
4554                                .pt(DynamicSpacing::Base04.rems(cx))
4555                                .justify_center()
4556                                .child({
4557                                    let keystroke =
4558                                        match self.position(window, cx) {
4559                                            DockPosition::Left => window
4560                                                .keystroke_text_for(&workspace::ToggleLeftDock),
4561                                            DockPosition::Bottom => window
4562                                                .keystroke_text_for(&workspace::ToggleBottomDock),
4563                                            DockPosition::Right => window
4564                                                .keystroke_text_for(&workspace::ToggleRightDock),
4565                                        };
4566                                    Label::new(format!("Toggle this panel with {keystroke}"))
4567                                }),
4568                        )
4569                })
4570        } else {
4571            let list_contents = {
4572                let items_len = self.cached_entries.len();
4573                let multi_buffer_snapshot = self
4574                    .active_editor()
4575                    .map(|editor| editor.read(cx).buffer().read(cx).snapshot(cx));
4576                uniform_list(
4577                    "entries",
4578                    items_len,
4579                    cx.processor(move |outline_panel, range: Range<usize>, window, cx| {
4580                        let entries = outline_panel.cached_entries.get(range);
4581                        entries
4582                            .map(|entries| entries.to_vec())
4583                            .unwrap_or_default()
4584                            .into_iter()
4585                            .filter_map(|cached_entry| match cached_entry.entry {
4586                                PanelEntry::Fs(entry) => Some(outline_panel.render_entry(
4587                                    &entry,
4588                                    cached_entry.depth,
4589                                    cached_entry.string_match.as_ref(),
4590                                    window,
4591                                    cx,
4592                                )),
4593                                PanelEntry::FoldedDirs(folded_dirs_entry) => {
4594                                    Some(outline_panel.render_folded_dirs(
4595                                        &folded_dirs_entry,
4596                                        cached_entry.depth,
4597                                        cached_entry.string_match.as_ref(),
4598                                        window,
4599                                        cx,
4600                                    ))
4601                                }
4602                                PanelEntry::Outline(OutlineEntry::Excerpt(excerpt)) => {
4603                                    outline_panel.render_excerpt(
4604                                        &excerpt,
4605                                        cached_entry.depth,
4606                                        window,
4607                                        cx,
4608                                    )
4609                                }
4610                                PanelEntry::Outline(OutlineEntry::Outline(entry)) => {
4611                                    Some(outline_panel.render_outline(
4612                                        &entry,
4613                                        cached_entry.depth,
4614                                        cached_entry.string_match.as_ref(),
4615                                        window,
4616                                        cx,
4617                                    ))
4618                                }
4619                                PanelEntry::Search(SearchEntry {
4620                                    match_range,
4621                                    render_data,
4622                                    kind,
4623                                    ..
4624                                }) => outline_panel.render_search_match(
4625                                    multi_buffer_snapshot.as_ref(),
4626                                    &match_range,
4627                                    &render_data,
4628                                    kind,
4629                                    cached_entry.depth,
4630                                    cached_entry.string_match.as_ref(),
4631                                    window,
4632                                    cx,
4633                                ),
4634                            })
4635                            .collect()
4636                    }),
4637                )
4638                .with_sizing_behavior(ListSizingBehavior::Infer)
4639                .with_horizontal_sizing_behavior(ListHorizontalSizingBehavior::Unconstrained)
4640                .with_width_from_item(self.max_width_item_index)
4641                .track_scroll(self.scroll_handle.clone())
4642                .when(show_indent_guides, |list| {
4643                    list.with_decoration(
4644                        ui::indent_guides(px(indent_size), IndentGuideColors::panel(cx))
4645                            .with_compute_indents_fn(cx.entity(), |outline_panel, range, _, _| {
4646                                let entries = outline_panel.cached_entries.get(range);
4647                                if let Some(entries) = entries {
4648                                    entries.iter().map(|item| item.depth).collect()
4649                                } else {
4650                                    smallvec::SmallVec::new()
4651                                }
4652                            })
4653                            .with_render_fn(cx.entity(), move |outline_panel, params, _, _| {
4654                                const LEFT_OFFSET: Pixels = px(14.);
4655
4656                                let indent_size = params.indent_size;
4657                                let item_height = params.item_height;
4658                                let active_indent_guide_ix = find_active_indent_guide_ix(
4659                                    outline_panel,
4660                                    &params.indent_guides,
4661                                );
4662
4663                                params
4664                                    .indent_guides
4665                                    .into_iter()
4666                                    .enumerate()
4667                                    .map(|(ix, layout)| {
4668                                        let bounds = Bounds::new(
4669                                            point(
4670                                                layout.offset.x * indent_size + LEFT_OFFSET,
4671                                                layout.offset.y * item_height,
4672                                            ),
4673                                            size(px(1.), layout.length * item_height),
4674                                        );
4675                                        ui::RenderedIndentGuide {
4676                                            bounds,
4677                                            layout,
4678                                            is_active: active_indent_guide_ix == Some(ix),
4679                                            hitbox: None,
4680                                        }
4681                                    })
4682                                    .collect()
4683                            }),
4684                    )
4685                })
4686            };
4687
4688            v_flex()
4689                .flex_shrink()
4690                .size_full()
4691                .child(list_contents.size_full().flex_shrink())
4692                .custom_scrollbars(
4693                    Scrollbars::for_settings::<OutlinePanelSettings>()
4694                        .tracked_scroll_handle(self.scroll_handle.clone())
4695                        .with_track_along(ScrollAxes::Horizontal)
4696                        .tracked_entity(cx.entity_id()),
4697                    window,
4698                    cx,
4699                )
4700        }
4701        .children(self.context_menu.as_ref().map(|(menu, position, _)| {
4702            deferred(
4703                anchored()
4704                    .position(*position)
4705                    .anchor(gpui::Corner::TopLeft)
4706                    .child(menu.clone()),
4707            )
4708            .with_priority(1)
4709        }));
4710
4711        v_flex().w_full().flex_1().overflow_hidden().child(contents)
4712    }
4713
4714    fn render_filter_footer(&mut self, pinned: bool, cx: &mut Context<Self>) -> Div {
4715        v_flex().flex_none().child(horizontal_separator(cx)).child(
4716            h_flex()
4717                .p_2()
4718                .w_full()
4719                .child(self.filter_editor.clone())
4720                .child(
4721                    div().child(
4722                        IconButton::new(
4723                            "outline-panel-menu",
4724                            if pinned {
4725                                IconName::Unpin
4726                            } else {
4727                                IconName::Pin
4728                            },
4729                        )
4730                        .tooltip(Tooltip::text(if pinned {
4731                            "Unpin Outline"
4732                        } else {
4733                            "Pin Active Outline"
4734                        }))
4735                        .shape(IconButtonShape::Square)
4736                        .on_click(cx.listener(
4737                            |outline_panel, _, window, cx| {
4738                                outline_panel.toggle_active_editor_pin(
4739                                    &ToggleActiveEditorPin,
4740                                    window,
4741                                    cx,
4742                                );
4743                            },
4744                        )),
4745                    ),
4746                ),
4747        )
4748    }
4749
4750    fn buffers_inside_directory(
4751        &self,
4752        dir_worktree: WorktreeId,
4753        dir_entry: &GitEntry,
4754    ) -> HashSet<BufferId> {
4755        if !dir_entry.is_dir() {
4756            debug_panic!("buffers_inside_directory called on a non-directory entry {dir_entry:?}");
4757            return HashSet::default();
4758        }
4759
4760        self.fs_entries
4761            .iter()
4762            .skip_while(|fs_entry| match fs_entry {
4763                FsEntry::Directory(directory) => {
4764                    directory.worktree_id != dir_worktree || &directory.entry != dir_entry
4765                }
4766                _ => true,
4767            })
4768            .skip(1)
4769            .take_while(|fs_entry| match fs_entry {
4770                FsEntry::ExternalFile(..) => false,
4771                FsEntry::Directory(directory) => {
4772                    directory.worktree_id == dir_worktree
4773                        && directory.entry.path.starts_with(&dir_entry.path)
4774                }
4775                FsEntry::File(file) => {
4776                    file.worktree_id == dir_worktree && file.entry.path.starts_with(&dir_entry.path)
4777                }
4778            })
4779            .filter_map(|fs_entry| match fs_entry {
4780                FsEntry::File(file) => Some(file.buffer_id),
4781                _ => None,
4782            })
4783            .collect()
4784    }
4785}
4786
4787fn workspace_active_editor(
4788    workspace: &Workspace,
4789    cx: &App,
4790) -> Option<(Box<dyn ItemHandle>, Entity<Editor>)> {
4791    let active_item = workspace.active_item(cx)?;
4792    let active_editor = active_item
4793        .act_as::<Editor>(cx)
4794        .filter(|editor| editor.read(cx).mode().is_full())?;
4795    Some((active_item, active_editor))
4796}
4797
4798fn back_to_common_visited_parent(
4799    visited_dirs: &mut Vec<(ProjectEntryId, Arc<Path>)>,
4800    worktree_id: &WorktreeId,
4801    new_entry: &Entry,
4802) -> Option<(WorktreeId, ProjectEntryId)> {
4803    while let Some((visited_dir_id, visited_path)) = visited_dirs.last() {
4804        match new_entry.path.parent() {
4805            Some(parent_path) => {
4806                if parent_path == visited_path.as_ref() {
4807                    return Some((*worktree_id, *visited_dir_id));
4808                }
4809            }
4810            None => {
4811                break;
4812            }
4813        }
4814        visited_dirs.pop();
4815    }
4816    None
4817}
4818
4819fn file_name(path: &Path) -> String {
4820    let mut current_path = path;
4821    loop {
4822        if let Some(file_name) = current_path.file_name() {
4823            return file_name.to_string_lossy().into_owned();
4824        }
4825        match current_path.parent() {
4826            Some(parent) => current_path = parent,
4827            None => return path.to_string_lossy().into_owned(),
4828        }
4829    }
4830}
4831
4832impl Panel for OutlinePanel {
4833    fn persistent_name() -> &'static str {
4834        "Outline Panel"
4835    }
4836
4837    fn position(&self, _: &Window, cx: &App) -> DockPosition {
4838        match OutlinePanelSettings::get_global(cx).dock {
4839            DockSide::Left => DockPosition::Left,
4840            DockSide::Right => DockPosition::Right,
4841        }
4842    }
4843
4844    fn position_is_valid(&self, position: DockPosition) -> bool {
4845        matches!(position, DockPosition::Left | DockPosition::Right)
4846    }
4847
4848    fn set_position(&mut self, position: DockPosition, _: &mut Window, cx: &mut Context<Self>) {
4849        settings::update_settings_file(self.fs.clone(), cx, move |settings, _| {
4850            let dock = match position {
4851                DockPosition::Left | DockPosition::Bottom => DockSide::Left,
4852                DockPosition::Right => DockSide::Right,
4853            };
4854            settings.outline_panel.get_or_insert_default().dock = Some(dock);
4855        });
4856    }
4857
4858    fn size(&self, _: &Window, cx: &App) -> Pixels {
4859        self.width
4860            .unwrap_or_else(|| OutlinePanelSettings::get_global(cx).default_width)
4861    }
4862
4863    fn set_size(&mut self, size: Option<Pixels>, window: &mut Window, cx: &mut Context<Self>) {
4864        self.width = size;
4865        cx.notify();
4866        cx.defer_in(window, |this, _, cx| {
4867            this.serialize(cx);
4868        });
4869    }
4870
4871    fn icon(&self, _: &Window, cx: &App) -> Option<IconName> {
4872        OutlinePanelSettings::get_global(cx)
4873            .button
4874            .then_some(IconName::ListTree)
4875    }
4876
4877    fn icon_tooltip(&self, _window: &Window, _: &App) -> Option<&'static str> {
4878        Some("Outline Panel")
4879    }
4880
4881    fn toggle_action(&self) -> Box<dyn Action> {
4882        Box::new(ToggleFocus)
4883    }
4884
4885    fn starts_open(&self, _window: &Window, _: &App) -> bool {
4886        self.active
4887    }
4888
4889    fn set_active(&mut self, active: bool, window: &mut Window, cx: &mut Context<Self>) {
4890        cx.spawn_in(window, async move |outline_panel, cx| {
4891            outline_panel
4892                .update_in(cx, |outline_panel, window, cx| {
4893                    let old_active = outline_panel.active;
4894                    outline_panel.active = active;
4895                    if old_active != active {
4896                        if active
4897                            && let Some((active_item, active_editor)) =
4898                                outline_panel.workspace.upgrade().and_then(|workspace| {
4899                                    workspace_active_editor(workspace.read(cx), cx)
4900                                })
4901                        {
4902                            if outline_panel.should_replace_active_item(active_item.as_ref()) {
4903                                outline_panel.replace_active_editor(
4904                                    active_item,
4905                                    active_editor,
4906                                    window,
4907                                    cx,
4908                                );
4909                            } else {
4910                                outline_panel.update_fs_entries(active_editor, None, window, cx)
4911                            }
4912                            return;
4913                        }
4914
4915                        if !outline_panel.pinned {
4916                            outline_panel.clear_previous(window, cx);
4917                        }
4918                    }
4919                    outline_panel.serialize(cx);
4920                })
4921                .ok();
4922        })
4923        .detach()
4924    }
4925
4926    fn activation_priority(&self) -> u32 {
4927        5
4928    }
4929}
4930
4931impl Focusable for OutlinePanel {
4932    fn focus_handle(&self, cx: &App) -> FocusHandle {
4933        self.filter_editor.focus_handle(cx)
4934    }
4935}
4936
4937impl EventEmitter<Event> for OutlinePanel {}
4938
4939impl EventEmitter<PanelEvent> for OutlinePanel {}
4940
4941impl Render for OutlinePanel {
4942    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
4943        let (is_local, is_via_ssh) = self.project.read_with(cx, |project, _| {
4944            (project.is_local(), project.is_via_remote_server())
4945        });
4946        let query = self.query(cx);
4947        let pinned = self.pinned;
4948        let settings = OutlinePanelSettings::get_global(cx);
4949        let indent_size = settings.indent_size;
4950        let show_indent_guides = settings.indent_guides.show == ShowIndentGuides::Always;
4951
4952        let search_query = match &self.mode {
4953            ItemsDisplayMode::Search(search_query) => Some(search_query),
4954            _ => None,
4955        };
4956
4957        v_flex()
4958            .id("outline-panel")
4959            .size_full()
4960            .overflow_hidden()
4961            .relative()
4962            .key_context(self.dispatch_context(window, cx))
4963            .on_action(cx.listener(Self::open_selected_entry))
4964            .on_action(cx.listener(Self::cancel))
4965            .on_action(cx.listener(Self::select_next))
4966            .on_action(cx.listener(Self::select_previous))
4967            .on_action(cx.listener(Self::select_first))
4968            .on_action(cx.listener(Self::select_last))
4969            .on_action(cx.listener(Self::select_parent))
4970            .on_action(cx.listener(Self::expand_selected_entry))
4971            .on_action(cx.listener(Self::collapse_selected_entry))
4972            .on_action(cx.listener(Self::expand_all_entries))
4973            .on_action(cx.listener(Self::collapse_all_entries))
4974            .on_action(cx.listener(Self::copy_path))
4975            .on_action(cx.listener(Self::copy_relative_path))
4976            .on_action(cx.listener(Self::toggle_active_editor_pin))
4977            .on_action(cx.listener(Self::unfold_directory))
4978            .on_action(cx.listener(Self::fold_directory))
4979            .on_action(cx.listener(Self::open_excerpts))
4980            .on_action(cx.listener(Self::open_excerpts_split))
4981            .when(is_local, |el| {
4982                el.on_action(cx.listener(Self::reveal_in_finder))
4983            })
4984            .when(is_local || is_via_ssh, |el| {
4985                el.on_action(cx.listener(Self::open_in_terminal))
4986            })
4987            .on_mouse_down(
4988                MouseButton::Right,
4989                cx.listener(move |outline_panel, event: &MouseDownEvent, window, cx| {
4990                    if let Some(entry) = outline_panel.selected_entry().cloned() {
4991                        outline_panel.deploy_context_menu(event.position, entry, window, cx)
4992                    } else if let Some(entry) = outline_panel.fs_entries.first().cloned() {
4993                        outline_panel.deploy_context_menu(
4994                            event.position,
4995                            PanelEntry::Fs(entry),
4996                            window,
4997                            cx,
4998                        )
4999                    }
5000                }),
5001            )
5002            .track_focus(&self.focus_handle)
5003            .when_some(search_query, |outline_panel, search_state| {
5004                outline_panel.child(
5005                    h_flex()
5006                        .py_1p5()
5007                        .px_2()
5008                        .h(DynamicSpacing::Base32.px(cx))
5009                        .flex_shrink_0()
5010                        .border_b_1()
5011                        .border_color(cx.theme().colors().border)
5012                        .gap_0p5()
5013                        .child(Label::new("Searching:").color(Color::Muted))
5014                        .child(Label::new(search_state.query.to_string())),
5015                )
5016            })
5017            .child(self.render_main_contents(query, show_indent_guides, indent_size, window, cx))
5018            .child(self.render_filter_footer(pinned, cx))
5019    }
5020}
5021
5022fn find_active_indent_guide_ix(
5023    outline_panel: &OutlinePanel,
5024    candidates: &[IndentGuideLayout],
5025) -> Option<usize> {
5026    let SelectedEntry::Valid(_, target_ix) = &outline_panel.selected_entry else {
5027        return None;
5028    };
5029    let target_depth = outline_panel
5030        .cached_entries
5031        .get(*target_ix)
5032        .map(|cached_entry| cached_entry.depth)?;
5033
5034    let (target_ix, target_depth) = if let Some(target_depth) = outline_panel
5035        .cached_entries
5036        .get(target_ix + 1)
5037        .filter(|cached_entry| cached_entry.depth > target_depth)
5038        .map(|entry| entry.depth)
5039    {
5040        (target_ix + 1, target_depth.saturating_sub(1))
5041    } else {
5042        (*target_ix, target_depth.saturating_sub(1))
5043    };
5044
5045    candidates
5046        .iter()
5047        .enumerate()
5048        .find(|(_, guide)| {
5049            guide.offset.y <= target_ix
5050                && target_ix < guide.offset.y + guide.length
5051                && guide.offset.x == target_depth
5052        })
5053        .map(|(ix, _)| ix)
5054}
5055
5056fn subscribe_for_editor_events(
5057    editor: &Entity<Editor>,
5058    window: &mut Window,
5059    cx: &mut Context<OutlinePanel>,
5060) -> Subscription {
5061    let debounce = Some(UPDATE_DEBOUNCE);
5062    cx.subscribe_in(
5063        editor,
5064        window,
5065        move |outline_panel, editor, e: &EditorEvent, window, cx| {
5066            if !outline_panel.active {
5067                return;
5068            }
5069            match e {
5070                EditorEvent::SelectionsChanged { local: true } => {
5071                    outline_panel.reveal_entry_for_selection(editor.clone(), window, cx);
5072                    cx.notify();
5073                }
5074                EditorEvent::ExcerptsAdded { excerpts, .. } => {
5075                    outline_panel
5076                        .new_entries_for_fs_update
5077                        .extend(excerpts.iter().map(|&(excerpt_id, _)| excerpt_id));
5078                    outline_panel.update_fs_entries(editor.clone(), debounce, window, cx);
5079                }
5080                EditorEvent::ExcerptsRemoved { ids, .. } => {
5081                    let mut ids = ids.iter().collect::<HashSet<_>>();
5082                    for excerpts in outline_panel.excerpts.values_mut() {
5083                        excerpts.retain(|excerpt_id, _| !ids.remove(excerpt_id));
5084                        if ids.is_empty() {
5085                            break;
5086                        }
5087                    }
5088                    outline_panel.update_fs_entries(editor.clone(), debounce, window, cx);
5089                }
5090                EditorEvent::ExcerptsExpanded { ids } => {
5091                    outline_panel.invalidate_outlines(ids);
5092                    let update_cached_items = outline_panel.update_non_fs_items(window, cx);
5093                    if update_cached_items {
5094                        outline_panel.update_cached_entries(Some(UPDATE_DEBOUNCE), window, cx);
5095                    }
5096                }
5097                EditorEvent::ExcerptsEdited { ids } => {
5098                    outline_panel.invalidate_outlines(ids);
5099                    let update_cached_items = outline_panel.update_non_fs_items(window, cx);
5100                    if update_cached_items {
5101                        outline_panel.update_cached_entries(Some(UPDATE_DEBOUNCE), window, cx);
5102                    }
5103                }
5104                EditorEvent::BufferFoldToggled { ids, .. } => {
5105                    outline_panel.invalidate_outlines(ids);
5106                    let mut latest_unfolded_buffer_id = None;
5107                    let mut latest_folded_buffer_id = None;
5108                    let mut ignore_selections_change = false;
5109                    outline_panel.new_entries_for_fs_update.extend(
5110                        ids.iter()
5111                            .filter(|id| {
5112                                outline_panel
5113                                    .excerpts
5114                                    .iter()
5115                                    .find_map(|(buffer_id, excerpts)| {
5116                                        if excerpts.contains_key(id) {
5117                                            ignore_selections_change |= outline_panel
5118                                                .preserve_selection_on_buffer_fold_toggles
5119                                                .remove(buffer_id);
5120                                            Some(buffer_id)
5121                                        } else {
5122                                            None
5123                                        }
5124                                    })
5125                                    .map(|buffer_id| {
5126                                        if editor.read(cx).is_buffer_folded(*buffer_id, cx) {
5127                                            latest_folded_buffer_id = Some(*buffer_id);
5128                                            false
5129                                        } else {
5130                                            latest_unfolded_buffer_id = Some(*buffer_id);
5131                                            true
5132                                        }
5133                                    })
5134                                    .unwrap_or(true)
5135                            })
5136                            .copied(),
5137                    );
5138                    if !ignore_selections_change
5139                        && let Some(entry_to_select) = latest_unfolded_buffer_id
5140                            .or(latest_folded_buffer_id)
5141                            .and_then(|toggled_buffer_id| {
5142                                outline_panel.fs_entries.iter().find_map(
5143                                    |fs_entry| match fs_entry {
5144                                        FsEntry::ExternalFile(external) => {
5145                                            if external.buffer_id == toggled_buffer_id {
5146                                                Some(fs_entry.clone())
5147                                            } else {
5148                                                None
5149                                            }
5150                                        }
5151                                        FsEntry::File(FsEntryFile { buffer_id, .. }) => {
5152                                            if *buffer_id == toggled_buffer_id {
5153                                                Some(fs_entry.clone())
5154                                            } else {
5155                                                None
5156                                            }
5157                                        }
5158                                        FsEntry::Directory(..) => None,
5159                                    },
5160                                )
5161                            })
5162                            .map(PanelEntry::Fs)
5163                    {
5164                        outline_panel.select_entry(entry_to_select, true, window, cx);
5165                    }
5166
5167                    outline_panel.update_fs_entries(editor.clone(), debounce, window, cx);
5168                }
5169                EditorEvent::Reparsed(buffer_id) => {
5170                    if let Some(excerpts) = outline_panel.excerpts.get_mut(buffer_id) {
5171                        for excerpt in excerpts.values_mut() {
5172                            excerpt.invalidate_outlines();
5173                        }
5174                    }
5175                    let update_cached_items = outline_panel.update_non_fs_items(window, cx);
5176                    if update_cached_items {
5177                        outline_panel.update_cached_entries(Some(UPDATE_DEBOUNCE), window, cx);
5178                    }
5179                }
5180                _ => {}
5181            }
5182        },
5183    )
5184}
5185
5186fn empty_icon() -> AnyElement {
5187    h_flex()
5188        .size(IconSize::default().rems())
5189        .invisible()
5190        .flex_none()
5191        .into_any_element()
5192}
5193
5194fn horizontal_separator(cx: &mut App) -> Div {
5195    div().mx_2().border_primary(cx).border_t_1()
5196}
5197
5198#[derive(Debug, Default)]
5199struct GenerationState {
5200    entries: Vec<CachedEntry>,
5201    match_candidates: Vec<StringMatchCandidate>,
5202    max_width_estimate_and_index: Option<(u64, usize)>,
5203}
5204
5205impl GenerationState {
5206    fn clear(&mut self) {
5207        self.entries.clear();
5208        self.match_candidates.clear();
5209        self.max_width_estimate_and_index = None;
5210    }
5211}
5212
5213#[cfg(test)]
5214mod tests {
5215    use db::indoc;
5216    use gpui::{TestAppContext, VisualTestContext, WindowHandle};
5217    use language::{Language, LanguageConfig, LanguageMatcher, tree_sitter_rust};
5218    use pretty_assertions::assert_eq;
5219    use project::FakeFs;
5220    use search::project_search::{self, perform_project_search};
5221    use serde_json::json;
5222    use util::path;
5223    use workspace::{OpenOptions, OpenVisible};
5224
5225    use super::*;
5226
5227    const SELECTED_MARKER: &str = "  <==== selected";
5228
5229    #[gpui::test(iterations = 10)]
5230    async fn test_project_search_results_toggling(cx: &mut TestAppContext) {
5231        init_test(cx);
5232
5233        let fs = FakeFs::new(cx.background_executor.clone());
5234        let root = path!("/rust-analyzer");
5235        populate_with_test_ra_project(&fs, root).await;
5236        let project = Project::test(fs.clone(), [Path::new(root)], cx).await;
5237        project.read_with(cx, |project, _| {
5238            project.languages().add(Arc::new(rust_lang()))
5239        });
5240        let workspace = add_outline_panel(&project, cx).await;
5241        let cx = &mut VisualTestContext::from_window(*workspace, cx);
5242        let outline_panel = outline_panel(&workspace, cx);
5243        outline_panel.update_in(cx, |outline_panel, window, cx| {
5244            outline_panel.set_active(true, window, cx)
5245        });
5246
5247        workspace
5248            .update(cx, |workspace, window, cx| {
5249                ProjectSearchView::deploy_search(
5250                    workspace,
5251                    &workspace::DeploySearch::default(),
5252                    window,
5253                    cx,
5254                )
5255            })
5256            .unwrap();
5257        let search_view = workspace
5258            .update(cx, |workspace, _, cx| {
5259                workspace
5260                    .active_pane()
5261                    .read(cx)
5262                    .items()
5263                    .find_map(|item| item.downcast::<ProjectSearchView>())
5264                    .expect("Project search view expected to appear after new search event trigger")
5265            })
5266            .unwrap();
5267
5268        let query = "param_names_for_lifetime_elision_hints";
5269        perform_project_search(&search_view, query, cx);
5270        search_view.update(cx, |search_view, cx| {
5271            search_view
5272                .results_editor()
5273                .update(cx, |results_editor, cx| {
5274                    assert_eq!(
5275                        results_editor.display_text(cx).match_indices(query).count(),
5276                        9
5277                    );
5278                });
5279        });
5280
5281        let all_matches = format!(
5282            r#"{root}/
5283  crates/
5284    ide/src/
5285      inlay_hints/
5286        fn_lifetime_fn.rs
5287          search: match config.param_names_for_lifetime_elision_hints {{
5288          search: allocated_lifetimes.push(if config.param_names_for_lifetime_elision_hints {{
5289          search: Some(it) if config.param_names_for_lifetime_elision_hints => {{
5290          search: InlayHintsConfig {{ param_names_for_lifetime_elision_hints: true, ..TEST_CONFIG }},
5291      inlay_hints.rs
5292        search: pub param_names_for_lifetime_elision_hints: bool,
5293        search: param_names_for_lifetime_elision_hints: self
5294      static_index.rs
5295        search: param_names_for_lifetime_elision_hints: false,
5296    rust-analyzer/src/
5297      cli/
5298        analysis_stats.rs
5299          search: param_names_for_lifetime_elision_hints: true,
5300      config.rs
5301        search: param_names_for_lifetime_elision_hints: self"#
5302        );
5303
5304        let select_first_in_all_matches = |line_to_select: &str| {
5305            assert!(all_matches.contains(line_to_select));
5306            all_matches.replacen(
5307                line_to_select,
5308                &format!("{line_to_select}{SELECTED_MARKER}"),
5309                1,
5310            )
5311        };
5312
5313        cx.executor()
5314            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5315        cx.run_until_parked();
5316        outline_panel.update(cx, |outline_panel, cx| {
5317            assert_eq!(
5318                display_entries(
5319                    &project,
5320                    &snapshot(outline_panel, cx),
5321                    &outline_panel.cached_entries,
5322                    outline_panel.selected_entry(),
5323                    cx,
5324                ),
5325                select_first_in_all_matches(
5326                    "search: match config.param_names_for_lifetime_elision_hints {"
5327                )
5328            );
5329        });
5330
5331        outline_panel.update_in(cx, |outline_panel, window, cx| {
5332            outline_panel.select_parent(&SelectParent, window, cx);
5333            assert_eq!(
5334                display_entries(
5335                    &project,
5336                    &snapshot(outline_panel, cx),
5337                    &outline_panel.cached_entries,
5338                    outline_panel.selected_entry(),
5339                    cx,
5340                ),
5341                select_first_in_all_matches("fn_lifetime_fn.rs")
5342            );
5343        });
5344        outline_panel.update_in(cx, |outline_panel, window, cx| {
5345            outline_panel.collapse_selected_entry(&CollapseSelectedEntry, window, cx);
5346        });
5347        cx.executor()
5348            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5349        cx.run_until_parked();
5350        outline_panel.update(cx, |outline_panel, cx| {
5351            assert_eq!(
5352                display_entries(
5353                    &project,
5354                    &snapshot(outline_panel, cx),
5355                    &outline_panel.cached_entries,
5356                    outline_panel.selected_entry(),
5357                    cx,
5358                ),
5359                format!(
5360                    r#"{root}/
5361  crates/
5362    ide/src/
5363      inlay_hints/
5364        fn_lifetime_fn.rs{SELECTED_MARKER}
5365      inlay_hints.rs
5366        search: pub param_names_for_lifetime_elision_hints: bool,
5367        search: param_names_for_lifetime_elision_hints: self
5368      static_index.rs
5369        search: param_names_for_lifetime_elision_hints: false,
5370    rust-analyzer/src/
5371      cli/
5372        analysis_stats.rs
5373          search: param_names_for_lifetime_elision_hints: true,
5374      config.rs
5375        search: param_names_for_lifetime_elision_hints: self"#,
5376                )
5377            );
5378        });
5379
5380        outline_panel.update_in(cx, |outline_panel, window, cx| {
5381            outline_panel.expand_all_entries(&ExpandAllEntries, window, cx);
5382        });
5383        cx.executor()
5384            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5385        cx.run_until_parked();
5386        outline_panel.update_in(cx, |outline_panel, window, cx| {
5387            outline_panel.select_parent(&SelectParent, window, cx);
5388            assert_eq!(
5389                display_entries(
5390                    &project,
5391                    &snapshot(outline_panel, cx),
5392                    &outline_panel.cached_entries,
5393                    outline_panel.selected_entry(),
5394                    cx,
5395                ),
5396                select_first_in_all_matches("inlay_hints/")
5397            );
5398        });
5399
5400        outline_panel.update_in(cx, |outline_panel, window, cx| {
5401            outline_panel.select_parent(&SelectParent, window, cx);
5402            assert_eq!(
5403                display_entries(
5404                    &project,
5405                    &snapshot(outline_panel, cx),
5406                    &outline_panel.cached_entries,
5407                    outline_panel.selected_entry(),
5408                    cx,
5409                ),
5410                select_first_in_all_matches("ide/src/")
5411            );
5412        });
5413
5414        outline_panel.update_in(cx, |outline_panel, window, cx| {
5415            outline_panel.collapse_selected_entry(&CollapseSelectedEntry, window, cx);
5416        });
5417        cx.executor()
5418            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5419        cx.run_until_parked();
5420        outline_panel.update(cx, |outline_panel, cx| {
5421            assert_eq!(
5422                display_entries(
5423                    &project,
5424                    &snapshot(outline_panel, cx),
5425                    &outline_panel.cached_entries,
5426                    outline_panel.selected_entry(),
5427                    cx,
5428                ),
5429                format!(
5430                    r#"{root}/
5431  crates/
5432    ide/src/{SELECTED_MARKER}
5433    rust-analyzer/src/
5434      cli/
5435        analysis_stats.rs
5436          search: param_names_for_lifetime_elision_hints: true,
5437      config.rs
5438        search: param_names_for_lifetime_elision_hints: self"#,
5439                )
5440            );
5441        });
5442        outline_panel.update_in(cx, |outline_panel, window, cx| {
5443            outline_panel.expand_selected_entry(&ExpandSelectedEntry, window, cx);
5444        });
5445        cx.executor()
5446            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5447        cx.run_until_parked();
5448        outline_panel.update(cx, |outline_panel, cx| {
5449            assert_eq!(
5450                display_entries(
5451                    &project,
5452                    &snapshot(outline_panel, cx),
5453                    &outline_panel.cached_entries,
5454                    outline_panel.selected_entry(),
5455                    cx,
5456                ),
5457                select_first_in_all_matches("ide/src/")
5458            );
5459        });
5460    }
5461
5462    #[gpui::test(iterations = 10)]
5463    async fn test_item_filtering(cx: &mut TestAppContext) {
5464        init_test(cx);
5465
5466        let fs = FakeFs::new(cx.background_executor.clone());
5467        let root = path!("/rust-analyzer");
5468        populate_with_test_ra_project(&fs, root).await;
5469        let project = Project::test(fs.clone(), [Path::new(root)], cx).await;
5470        project.read_with(cx, |project, _| {
5471            project.languages().add(Arc::new(rust_lang()))
5472        });
5473        let workspace = add_outline_panel(&project, cx).await;
5474        let cx = &mut VisualTestContext::from_window(*workspace, cx);
5475        let outline_panel = outline_panel(&workspace, cx);
5476        outline_panel.update_in(cx, |outline_panel, window, cx| {
5477            outline_panel.set_active(true, window, cx)
5478        });
5479
5480        workspace
5481            .update(cx, |workspace, window, cx| {
5482                ProjectSearchView::deploy_search(
5483                    workspace,
5484                    &workspace::DeploySearch::default(),
5485                    window,
5486                    cx,
5487                )
5488            })
5489            .unwrap();
5490        let search_view = workspace
5491            .update(cx, |workspace, _, cx| {
5492                workspace
5493                    .active_pane()
5494                    .read(cx)
5495                    .items()
5496                    .find_map(|item| item.downcast::<ProjectSearchView>())
5497                    .expect("Project search view expected to appear after new search event trigger")
5498            })
5499            .unwrap();
5500
5501        let query = "param_names_for_lifetime_elision_hints";
5502        perform_project_search(&search_view, query, cx);
5503        search_view.update(cx, |search_view, cx| {
5504            search_view
5505                .results_editor()
5506                .update(cx, |results_editor, cx| {
5507                    assert_eq!(
5508                        results_editor.display_text(cx).match_indices(query).count(),
5509                        9
5510                    );
5511                });
5512        });
5513        let all_matches = format!(
5514            r#"{root}/
5515  crates/
5516    ide/src/
5517      inlay_hints/
5518        fn_lifetime_fn.rs
5519          search: match config.param_names_for_lifetime_elision_hints {{
5520          search: allocated_lifetimes.push(if config.param_names_for_lifetime_elision_hints {{
5521          search: Some(it) if config.param_names_for_lifetime_elision_hints => {{
5522          search: InlayHintsConfig {{ param_names_for_lifetime_elision_hints: true, ..TEST_CONFIG }},
5523      inlay_hints.rs
5524        search: pub param_names_for_lifetime_elision_hints: bool,
5525        search: param_names_for_lifetime_elision_hints: self
5526      static_index.rs
5527        search: param_names_for_lifetime_elision_hints: false,
5528    rust-analyzer/src/
5529      cli/
5530        analysis_stats.rs
5531          search: param_names_for_lifetime_elision_hints: true,
5532      config.rs
5533        search: param_names_for_lifetime_elision_hints: self"#
5534        );
5535
5536        cx.executor()
5537            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5538        cx.run_until_parked();
5539        outline_panel.update(cx, |outline_panel, cx| {
5540            assert_eq!(
5541                display_entries(
5542                    &project,
5543                    &snapshot(outline_panel, cx),
5544                    &outline_panel.cached_entries,
5545                    None,
5546                    cx,
5547                ),
5548                all_matches,
5549            );
5550        });
5551
5552        let filter_text = "a";
5553        outline_panel.update_in(cx, |outline_panel, window, cx| {
5554            outline_panel.filter_editor.update(cx, |filter_editor, cx| {
5555                filter_editor.set_text(filter_text, window, cx);
5556            });
5557        });
5558        cx.executor()
5559            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5560        cx.run_until_parked();
5561
5562        outline_panel.update(cx, |outline_panel, cx| {
5563            assert_eq!(
5564                display_entries(
5565                    &project,
5566                    &snapshot(outline_panel, cx),
5567                    &outline_panel.cached_entries,
5568                    None,
5569                    cx,
5570                ),
5571                all_matches
5572                    .lines()
5573                    .skip(1) // `/rust-analyzer/` is a root entry with path `` and it will be filtered out
5574                    .filter(|item| item.contains(filter_text))
5575                    .collect::<Vec<_>>()
5576                    .join("\n"),
5577            );
5578        });
5579
5580        outline_panel.update_in(cx, |outline_panel, window, cx| {
5581            outline_panel.filter_editor.update(cx, |filter_editor, cx| {
5582                filter_editor.set_text("", window, cx);
5583            });
5584        });
5585        cx.executor()
5586            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5587        cx.run_until_parked();
5588        outline_panel.update(cx, |outline_panel, cx| {
5589            assert_eq!(
5590                display_entries(
5591                    &project,
5592                    &snapshot(outline_panel, cx),
5593                    &outline_panel.cached_entries,
5594                    None,
5595                    cx,
5596                ),
5597                all_matches,
5598            );
5599        });
5600    }
5601
5602    #[gpui::test(iterations = 10)]
5603    async fn test_item_opening(cx: &mut TestAppContext) {
5604        init_test(cx);
5605
5606        let fs = FakeFs::new(cx.background_executor.clone());
5607        let root = path!("/rust-analyzer");
5608        populate_with_test_ra_project(&fs, root).await;
5609        let project = Project::test(fs.clone(), [Path::new(root)], cx).await;
5610        project.read_with(cx, |project, _| {
5611            project.languages().add(Arc::new(rust_lang()))
5612        });
5613        let workspace = add_outline_panel(&project, cx).await;
5614        let cx = &mut VisualTestContext::from_window(*workspace, cx);
5615        let outline_panel = outline_panel(&workspace, cx);
5616        outline_panel.update_in(cx, |outline_panel, window, cx| {
5617            outline_panel.set_active(true, window, cx)
5618        });
5619
5620        workspace
5621            .update(cx, |workspace, window, cx| {
5622                ProjectSearchView::deploy_search(
5623                    workspace,
5624                    &workspace::DeploySearch::default(),
5625                    window,
5626                    cx,
5627                )
5628            })
5629            .unwrap();
5630        let search_view = workspace
5631            .update(cx, |workspace, _, cx| {
5632                workspace
5633                    .active_pane()
5634                    .read(cx)
5635                    .items()
5636                    .find_map(|item| item.downcast::<ProjectSearchView>())
5637                    .expect("Project search view expected to appear after new search event trigger")
5638            })
5639            .unwrap();
5640
5641        let query = "param_names_for_lifetime_elision_hints";
5642        perform_project_search(&search_view, query, cx);
5643        search_view.update(cx, |search_view, cx| {
5644            search_view
5645                .results_editor()
5646                .update(cx, |results_editor, cx| {
5647                    assert_eq!(
5648                        results_editor.display_text(cx).match_indices(query).count(),
5649                        9
5650                    );
5651                });
5652        });
5653        let all_matches = format!(
5654            r#"{root}/
5655  crates/
5656    ide/src/
5657      inlay_hints/
5658        fn_lifetime_fn.rs
5659          search: match config.param_names_for_lifetime_elision_hints {{
5660          search: allocated_lifetimes.push(if config.param_names_for_lifetime_elision_hints {{
5661          search: Some(it) if config.param_names_for_lifetime_elision_hints => {{
5662          search: InlayHintsConfig {{ param_names_for_lifetime_elision_hints: true, ..TEST_CONFIG }},
5663      inlay_hints.rs
5664        search: pub param_names_for_lifetime_elision_hints: bool,
5665        search: param_names_for_lifetime_elision_hints: self
5666      static_index.rs
5667        search: param_names_for_lifetime_elision_hints: false,
5668    rust-analyzer/src/
5669      cli/
5670        analysis_stats.rs
5671          search: param_names_for_lifetime_elision_hints: true,
5672      config.rs
5673        search: param_names_for_lifetime_elision_hints: self"#
5674        );
5675        let select_first_in_all_matches = |line_to_select: &str| {
5676            assert!(all_matches.contains(line_to_select));
5677            all_matches.replacen(
5678                line_to_select,
5679                &format!("{line_to_select}{SELECTED_MARKER}"),
5680                1,
5681            )
5682        };
5683        cx.executor()
5684            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5685        cx.run_until_parked();
5686
5687        let active_editor = outline_panel.read_with(cx, |outline_panel, _| {
5688            outline_panel
5689                .active_editor()
5690                .expect("should have an active editor open")
5691        });
5692        let initial_outline_selection =
5693            "search: match config.param_names_for_lifetime_elision_hints {";
5694        outline_panel.update_in(cx, |outline_panel, window, cx| {
5695            assert_eq!(
5696                display_entries(
5697                    &project,
5698                    &snapshot(outline_panel, cx),
5699                    &outline_panel.cached_entries,
5700                    outline_panel.selected_entry(),
5701                    cx,
5702                ),
5703                select_first_in_all_matches(initial_outline_selection)
5704            );
5705            assert_eq!(
5706                selected_row_text(&active_editor, cx),
5707                initial_outline_selection.replace("search: ", ""), // Clear outline metadata prefixes
5708                "Should place the initial editor selection on the corresponding search result"
5709            );
5710
5711            outline_panel.select_next(&SelectNext, window, cx);
5712            outline_panel.select_next(&SelectNext, window, cx);
5713        });
5714
5715        let navigated_outline_selection =
5716            "search: Some(it) if config.param_names_for_lifetime_elision_hints => {";
5717        outline_panel.update(cx, |outline_panel, cx| {
5718            assert_eq!(
5719                display_entries(
5720                    &project,
5721                    &snapshot(outline_panel, cx),
5722                    &outline_panel.cached_entries,
5723                    outline_panel.selected_entry(),
5724                    cx,
5725                ),
5726                select_first_in_all_matches(navigated_outline_selection)
5727            );
5728        });
5729        cx.executor()
5730            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5731        outline_panel.update(cx, |_, cx| {
5732            assert_eq!(
5733                selected_row_text(&active_editor, cx),
5734                navigated_outline_selection.replace("search: ", ""), // Clear outline metadata prefixes
5735                "Should still have the initial caret position after SelectNext calls"
5736            );
5737        });
5738
5739        outline_panel.update_in(cx, |outline_panel, window, cx| {
5740            outline_panel.open_selected_entry(&OpenSelectedEntry, window, cx);
5741        });
5742        outline_panel.update(cx, |_outline_panel, cx| {
5743            assert_eq!(
5744                selected_row_text(&active_editor, cx),
5745                navigated_outline_selection.replace("search: ", ""), // Clear outline metadata prefixes
5746                "After opening, should move the caret to the opened outline entry's position"
5747            );
5748        });
5749
5750        outline_panel.update_in(cx, |outline_panel, window, cx| {
5751            outline_panel.select_next(&SelectNext, window, cx);
5752        });
5753        let next_navigated_outline_selection = "search: InlayHintsConfig { param_names_for_lifetime_elision_hints: true, ..TEST_CONFIG },";
5754        outline_panel.update(cx, |outline_panel, cx| {
5755            assert_eq!(
5756                display_entries(
5757                    &project,
5758                    &snapshot(outline_panel, cx),
5759                    &outline_panel.cached_entries,
5760                    outline_panel.selected_entry(),
5761                    cx,
5762                ),
5763                select_first_in_all_matches(next_navigated_outline_selection)
5764            );
5765        });
5766        cx.executor()
5767            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5768        outline_panel.update(cx, |_outline_panel, cx| {
5769            assert_eq!(
5770                selected_row_text(&active_editor, cx),
5771                next_navigated_outline_selection.replace("search: ", ""), // Clear outline metadata prefixes
5772                "Should again preserve the selection after another SelectNext call"
5773            );
5774        });
5775
5776        outline_panel.update_in(cx, |outline_panel, window, cx| {
5777            outline_panel.open_excerpts(&editor::actions::OpenExcerpts, window, cx);
5778        });
5779        cx.executor()
5780            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5781        cx.run_until_parked();
5782        let new_active_editor = outline_panel.read_with(cx, |outline_panel, _| {
5783            outline_panel
5784                .active_editor()
5785                .expect("should have an active editor open")
5786        });
5787        outline_panel.update(cx, |outline_panel, cx| {
5788            assert_ne!(
5789                active_editor, new_active_editor,
5790                "After opening an excerpt, new editor should be open"
5791            );
5792            assert_eq!(
5793                display_entries(
5794                    &project,
5795                    &snapshot(outline_panel, cx),
5796                    &outline_panel.cached_entries,
5797                    outline_panel.selected_entry(),
5798                    cx,
5799                ),
5800                "fn_lifetime_fn.rs  <==== selected"
5801            );
5802            assert_eq!(
5803                selected_row_text(&new_active_editor, cx),
5804                next_navigated_outline_selection.replace("search: ", ""), // Clear outline metadata prefixes
5805                "When opening the excerpt, should navigate to the place corresponding the outline entry"
5806            );
5807        });
5808    }
5809
5810    #[gpui::test]
5811    async fn test_multiple_workrees(cx: &mut TestAppContext) {
5812        init_test(cx);
5813
5814        let fs = FakeFs::new(cx.background_executor.clone());
5815        fs.insert_tree(
5816            path!("/root"),
5817            json!({
5818                "one": {
5819                    "a.txt": "aaa aaa"
5820                },
5821                "two": {
5822                    "b.txt": "a aaa"
5823                }
5824
5825            }),
5826        )
5827        .await;
5828        let project = Project::test(fs.clone(), [Path::new(path!("/root/one"))], cx).await;
5829        let workspace = add_outline_panel(&project, cx).await;
5830        let cx = &mut VisualTestContext::from_window(*workspace, cx);
5831        let outline_panel = outline_panel(&workspace, cx);
5832        outline_panel.update_in(cx, |outline_panel, window, cx| {
5833            outline_panel.set_active(true, window, cx)
5834        });
5835
5836        let items = workspace
5837            .update(cx, |workspace, window, cx| {
5838                workspace.open_paths(
5839                    vec![PathBuf::from(path!("/root/two"))],
5840                    OpenOptions {
5841                        visible: Some(OpenVisible::OnlyDirectories),
5842                        ..Default::default()
5843                    },
5844                    None,
5845                    window,
5846                    cx,
5847                )
5848            })
5849            .unwrap()
5850            .await;
5851        assert_eq!(items.len(), 1, "Were opening another worktree directory");
5852        assert!(
5853            items[0].is_none(),
5854            "Directory should be opened successfully"
5855        );
5856
5857        workspace
5858            .update(cx, |workspace, window, cx| {
5859                ProjectSearchView::deploy_search(
5860                    workspace,
5861                    &workspace::DeploySearch::default(),
5862                    window,
5863                    cx,
5864                )
5865            })
5866            .unwrap();
5867        let search_view = workspace
5868            .update(cx, |workspace, _, cx| {
5869                workspace
5870                    .active_pane()
5871                    .read(cx)
5872                    .items()
5873                    .find_map(|item| item.downcast::<ProjectSearchView>())
5874                    .expect("Project search view expected to appear after new search event trigger")
5875            })
5876            .unwrap();
5877
5878        let query = "aaa";
5879        perform_project_search(&search_view, query, cx);
5880        search_view.update(cx, |search_view, cx| {
5881            search_view
5882                .results_editor()
5883                .update(cx, |results_editor, cx| {
5884                    assert_eq!(
5885                        results_editor.display_text(cx).match_indices(query).count(),
5886                        3
5887                    );
5888                });
5889        });
5890
5891        cx.executor()
5892            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5893        cx.run_until_parked();
5894        outline_panel.update(cx, |outline_panel, cx| {
5895            assert_eq!(
5896                display_entries(
5897                    &project,
5898                    &snapshot(outline_panel, cx),
5899                    &outline_panel.cached_entries,
5900                    outline_panel.selected_entry(),
5901                    cx,
5902                ),
5903                format!(
5904                    r#"{}/
5905  a.txt
5906    search: aaa aaa  <==== selected
5907    search: aaa aaa
5908{}/
5909  b.txt
5910    search: a aaa"#,
5911                    path!("/root/one"),
5912                    path!("/root/two"),
5913                ),
5914            );
5915        });
5916
5917        outline_panel.update_in(cx, |outline_panel, window, cx| {
5918            outline_panel.select_previous(&SelectPrevious, window, cx);
5919            outline_panel.open_selected_entry(&OpenSelectedEntry, window, cx);
5920        });
5921        cx.executor()
5922            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5923        cx.run_until_parked();
5924        outline_panel.update(cx, |outline_panel, cx| {
5925            assert_eq!(
5926                display_entries(
5927                    &project,
5928                    &snapshot(outline_panel, cx),
5929                    &outline_panel.cached_entries,
5930                    outline_panel.selected_entry(),
5931                    cx,
5932                ),
5933                format!(
5934                    r#"{}/
5935  a.txt  <==== selected
5936{}/
5937  b.txt
5938    search: a aaa"#,
5939                    path!("/root/one"),
5940                    path!("/root/two"),
5941                ),
5942            );
5943        });
5944
5945        outline_panel.update_in(cx, |outline_panel, window, cx| {
5946            outline_panel.select_next(&SelectNext, window, cx);
5947            outline_panel.open_selected_entry(&OpenSelectedEntry, window, cx);
5948        });
5949        cx.executor()
5950            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5951        cx.run_until_parked();
5952        outline_panel.update(cx, |outline_panel, cx| {
5953            assert_eq!(
5954                display_entries(
5955                    &project,
5956                    &snapshot(outline_panel, cx),
5957                    &outline_panel.cached_entries,
5958                    outline_panel.selected_entry(),
5959                    cx,
5960                ),
5961                format!(
5962                    r#"{}/
5963  a.txt
5964{}/  <==== selected"#,
5965                    path!("/root/one"),
5966                    path!("/root/two"),
5967                ),
5968            );
5969        });
5970
5971        outline_panel.update_in(cx, |outline_panel, window, cx| {
5972            outline_panel.open_selected_entry(&OpenSelectedEntry, window, cx);
5973        });
5974        cx.executor()
5975            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
5976        cx.run_until_parked();
5977        outline_panel.update(cx, |outline_panel, cx| {
5978            assert_eq!(
5979                display_entries(
5980                    &project,
5981                    &snapshot(outline_panel, cx),
5982                    &outline_panel.cached_entries,
5983                    outline_panel.selected_entry(),
5984                    cx,
5985                ),
5986                format!(
5987                    r#"{}/
5988  a.txt
5989{}/  <==== selected
5990  b.txt
5991    search: a aaa"#,
5992                    path!("/root/one"),
5993                    path!("/root/two"),
5994                )
5995            );
5996        });
5997    }
5998
5999    #[gpui::test]
6000    async fn test_navigating_in_singleton(cx: &mut TestAppContext) {
6001        init_test(cx);
6002
6003        let root = path!("/root");
6004        let fs = FakeFs::new(cx.background_executor.clone());
6005        fs.insert_tree(
6006            root,
6007            json!({
6008                "src": {
6009                    "lib.rs": indoc!("
6010#[derive(Clone, Debug, PartialEq, Eq, Hash)]
6011struct OutlineEntryExcerpt {
6012    id: ExcerptId,
6013    buffer_id: BufferId,
6014    range: ExcerptRange<language::Anchor>,
6015}"),
6016                }
6017            }),
6018        )
6019        .await;
6020        let project = Project::test(fs.clone(), [Path::new(root)], cx).await;
6021        project.read_with(cx, |project, _| {
6022            project.languages().add(Arc::new(
6023                rust_lang()
6024                    .with_outline_query(
6025                        r#"
6026                (struct_item
6027                    (visibility_modifier)? @context
6028                    "struct" @context
6029                    name: (_) @name) @item
6030
6031                (field_declaration
6032                    (visibility_modifier)? @context
6033                    name: (_) @name) @item
6034"#,
6035                    )
6036                    .unwrap(),
6037            ))
6038        });
6039        let workspace = add_outline_panel(&project, cx).await;
6040        let cx = &mut VisualTestContext::from_window(*workspace, cx);
6041        let outline_panel = outline_panel(&workspace, cx);
6042        cx.update(|window, cx| {
6043            outline_panel.update(cx, |outline_panel, cx| {
6044                outline_panel.set_active(true, window, cx)
6045            });
6046        });
6047
6048        let _editor = workspace
6049            .update(cx, |workspace, window, cx| {
6050                workspace.open_abs_path(
6051                    PathBuf::from(path!("/root/src/lib.rs")),
6052                    OpenOptions {
6053                        visible: Some(OpenVisible::All),
6054                        ..Default::default()
6055                    },
6056                    window,
6057                    cx,
6058                )
6059            })
6060            .unwrap()
6061            .await
6062            .expect("Failed to open Rust source file")
6063            .downcast::<Editor>()
6064            .expect("Should open an editor for Rust source file");
6065
6066        cx.executor()
6067            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6068        cx.run_until_parked();
6069        outline_panel.update(cx, |outline_panel, cx| {
6070            assert_eq!(
6071                display_entries(
6072                    &project,
6073                    &snapshot(outline_panel, cx),
6074                    &outline_panel.cached_entries,
6075                    outline_panel.selected_entry(),
6076                    cx,
6077                ),
6078                indoc!(
6079                    "
6080outline: struct OutlineEntryExcerpt
6081  outline: id
6082  outline: buffer_id
6083  outline: range"
6084                )
6085            );
6086        });
6087
6088        cx.update(|window, cx| {
6089            outline_panel.update(cx, |outline_panel, cx| {
6090                outline_panel.select_next(&SelectNext, window, cx);
6091            });
6092        });
6093        cx.executor()
6094            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6095        cx.run_until_parked();
6096        outline_panel.update(cx, |outline_panel, cx| {
6097            assert_eq!(
6098                display_entries(
6099                    &project,
6100                    &snapshot(outline_panel, cx),
6101                    &outline_panel.cached_entries,
6102                    outline_panel.selected_entry(),
6103                    cx,
6104                ),
6105                indoc!(
6106                    "
6107outline: struct OutlineEntryExcerpt  <==== selected
6108  outline: id
6109  outline: buffer_id
6110  outline: range"
6111                )
6112            );
6113        });
6114
6115        cx.update(|window, cx| {
6116            outline_panel.update(cx, |outline_panel, cx| {
6117                outline_panel.select_next(&SelectNext, window, cx);
6118            });
6119        });
6120        cx.executor()
6121            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6122        cx.run_until_parked();
6123        outline_panel.update(cx, |outline_panel, cx| {
6124            assert_eq!(
6125                display_entries(
6126                    &project,
6127                    &snapshot(outline_panel, cx),
6128                    &outline_panel.cached_entries,
6129                    outline_panel.selected_entry(),
6130                    cx,
6131                ),
6132                indoc!(
6133                    "
6134outline: struct OutlineEntryExcerpt
6135  outline: id  <==== selected
6136  outline: buffer_id
6137  outline: range"
6138                )
6139            );
6140        });
6141
6142        cx.update(|window, cx| {
6143            outline_panel.update(cx, |outline_panel, cx| {
6144                outline_panel.select_next(&SelectNext, window, cx);
6145            });
6146        });
6147        cx.executor()
6148            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6149        cx.run_until_parked();
6150        outline_panel.update(cx, |outline_panel, cx| {
6151            assert_eq!(
6152                display_entries(
6153                    &project,
6154                    &snapshot(outline_panel, cx),
6155                    &outline_panel.cached_entries,
6156                    outline_panel.selected_entry(),
6157                    cx,
6158                ),
6159                indoc!(
6160                    "
6161outline: struct OutlineEntryExcerpt
6162  outline: id
6163  outline: buffer_id  <==== selected
6164  outline: range"
6165                )
6166            );
6167        });
6168
6169        cx.update(|window, cx| {
6170            outline_panel.update(cx, |outline_panel, cx| {
6171                outline_panel.select_next(&SelectNext, window, cx);
6172            });
6173        });
6174        cx.executor()
6175            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6176        cx.run_until_parked();
6177        outline_panel.update(cx, |outline_panel, cx| {
6178            assert_eq!(
6179                display_entries(
6180                    &project,
6181                    &snapshot(outline_panel, cx),
6182                    &outline_panel.cached_entries,
6183                    outline_panel.selected_entry(),
6184                    cx,
6185                ),
6186                indoc!(
6187                    "
6188outline: struct OutlineEntryExcerpt
6189  outline: id
6190  outline: buffer_id
6191  outline: range  <==== selected"
6192                )
6193            );
6194        });
6195
6196        cx.update(|window, cx| {
6197            outline_panel.update(cx, |outline_panel, cx| {
6198                outline_panel.select_next(&SelectNext, window, cx);
6199            });
6200        });
6201        cx.executor()
6202            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6203        cx.run_until_parked();
6204        outline_panel.update(cx, |outline_panel, cx| {
6205            assert_eq!(
6206                display_entries(
6207                    &project,
6208                    &snapshot(outline_panel, cx),
6209                    &outline_panel.cached_entries,
6210                    outline_panel.selected_entry(),
6211                    cx,
6212                ),
6213                indoc!(
6214                    "
6215outline: struct OutlineEntryExcerpt  <==== selected
6216  outline: id
6217  outline: buffer_id
6218  outline: range"
6219                )
6220            );
6221        });
6222
6223        cx.update(|window, cx| {
6224            outline_panel.update(cx, |outline_panel, cx| {
6225                outline_panel.select_previous(&SelectPrevious, window, cx);
6226            });
6227        });
6228        cx.executor()
6229            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6230        cx.run_until_parked();
6231        outline_panel.update(cx, |outline_panel, cx| {
6232            assert_eq!(
6233                display_entries(
6234                    &project,
6235                    &snapshot(outline_panel, cx),
6236                    &outline_panel.cached_entries,
6237                    outline_panel.selected_entry(),
6238                    cx,
6239                ),
6240                indoc!(
6241                    "
6242outline: struct OutlineEntryExcerpt
6243  outline: id
6244  outline: buffer_id
6245  outline: range  <==== selected"
6246                )
6247            );
6248        });
6249
6250        cx.update(|window, cx| {
6251            outline_panel.update(cx, |outline_panel, cx| {
6252                outline_panel.select_previous(&SelectPrevious, window, cx);
6253            });
6254        });
6255        cx.executor()
6256            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6257        cx.run_until_parked();
6258        outline_panel.update(cx, |outline_panel, cx| {
6259            assert_eq!(
6260                display_entries(
6261                    &project,
6262                    &snapshot(outline_panel, cx),
6263                    &outline_panel.cached_entries,
6264                    outline_panel.selected_entry(),
6265                    cx,
6266                ),
6267                indoc!(
6268                    "
6269outline: struct OutlineEntryExcerpt
6270  outline: id
6271  outline: buffer_id  <==== selected
6272  outline: range"
6273                )
6274            );
6275        });
6276
6277        cx.update(|window, cx| {
6278            outline_panel.update(cx, |outline_panel, cx| {
6279                outline_panel.select_previous(&SelectPrevious, window, cx);
6280            });
6281        });
6282        cx.executor()
6283            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6284        cx.run_until_parked();
6285        outline_panel.update(cx, |outline_panel, cx| {
6286            assert_eq!(
6287                display_entries(
6288                    &project,
6289                    &snapshot(outline_panel, cx),
6290                    &outline_panel.cached_entries,
6291                    outline_panel.selected_entry(),
6292                    cx,
6293                ),
6294                indoc!(
6295                    "
6296outline: struct OutlineEntryExcerpt
6297  outline: id  <==== selected
6298  outline: buffer_id
6299  outline: range"
6300                )
6301            );
6302        });
6303
6304        cx.update(|window, cx| {
6305            outline_panel.update(cx, |outline_panel, cx| {
6306                outline_panel.select_previous(&SelectPrevious, window, cx);
6307            });
6308        });
6309        cx.executor()
6310            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6311        cx.run_until_parked();
6312        outline_panel.update(cx, |outline_panel, cx| {
6313            assert_eq!(
6314                display_entries(
6315                    &project,
6316                    &snapshot(outline_panel, cx),
6317                    &outline_panel.cached_entries,
6318                    outline_panel.selected_entry(),
6319                    cx,
6320                ),
6321                indoc!(
6322                    "
6323outline: struct OutlineEntryExcerpt  <==== selected
6324  outline: id
6325  outline: buffer_id
6326  outline: range"
6327                )
6328            );
6329        });
6330
6331        cx.update(|window, cx| {
6332            outline_panel.update(cx, |outline_panel, cx| {
6333                outline_panel.select_previous(&SelectPrevious, window, cx);
6334            });
6335        });
6336        cx.executor()
6337            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6338        cx.run_until_parked();
6339        outline_panel.update(cx, |outline_panel, cx| {
6340            assert_eq!(
6341                display_entries(
6342                    &project,
6343                    &snapshot(outline_panel, cx),
6344                    &outline_panel.cached_entries,
6345                    outline_panel.selected_entry(),
6346                    cx,
6347                ),
6348                indoc!(
6349                    "
6350outline: struct OutlineEntryExcerpt
6351  outline: id
6352  outline: buffer_id
6353  outline: range  <==== selected"
6354                )
6355            );
6356        });
6357    }
6358
6359    #[gpui::test(iterations = 10)]
6360    async fn test_frontend_repo_structure(cx: &mut TestAppContext) {
6361        init_test(cx);
6362
6363        let root = path!("/frontend-project");
6364        let fs = FakeFs::new(cx.background_executor.clone());
6365        fs.insert_tree(
6366            root,
6367            json!({
6368                "public": {
6369                    "lottie": {
6370                        "syntax-tree.json": r#"{ "something": "static" }"#
6371                    }
6372                },
6373                "src": {
6374                    "app": {
6375                        "(site)": {
6376                            "(about)": {
6377                                "jobs": {
6378                                    "[slug]": {
6379                                        "page.tsx": r#"static"#
6380                                    }
6381                                }
6382                            },
6383                            "(blog)": {
6384                                "post": {
6385                                    "[slug]": {
6386                                        "page.tsx": r#"static"#
6387                                    }
6388                                }
6389                            },
6390                        }
6391                    },
6392                    "components": {
6393                        "ErrorBoundary.tsx": r#"static"#,
6394                    }
6395                }
6396
6397            }),
6398        )
6399        .await;
6400        let project = Project::test(fs.clone(), [Path::new(root)], cx).await;
6401        let workspace = add_outline_panel(&project, cx).await;
6402        let cx = &mut VisualTestContext::from_window(*workspace, cx);
6403        let outline_panel = outline_panel(&workspace, cx);
6404        outline_panel.update_in(cx, |outline_panel, window, cx| {
6405            outline_panel.set_active(true, window, cx)
6406        });
6407
6408        workspace
6409            .update(cx, |workspace, window, cx| {
6410                ProjectSearchView::deploy_search(
6411                    workspace,
6412                    &workspace::DeploySearch::default(),
6413                    window,
6414                    cx,
6415                )
6416            })
6417            .unwrap();
6418        let search_view = workspace
6419            .update(cx, |workspace, _, cx| {
6420                workspace
6421                    .active_pane()
6422                    .read(cx)
6423                    .items()
6424                    .find_map(|item| item.downcast::<ProjectSearchView>())
6425                    .expect("Project search view expected to appear after new search event trigger")
6426            })
6427            .unwrap();
6428
6429        let query = "static";
6430        perform_project_search(&search_view, query, cx);
6431        search_view.update(cx, |search_view, cx| {
6432            search_view
6433                .results_editor()
6434                .update(cx, |results_editor, cx| {
6435                    assert_eq!(
6436                        results_editor.display_text(cx).match_indices(query).count(),
6437                        4
6438                    );
6439                });
6440        });
6441
6442        cx.executor()
6443            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6444        cx.run_until_parked();
6445        outline_panel.update(cx, |outline_panel, cx| {
6446            assert_eq!(
6447                display_entries(
6448                    &project,
6449                    &snapshot(outline_panel, cx),
6450                    &outline_panel.cached_entries,
6451                    outline_panel.selected_entry(),
6452                    cx,
6453                ),
6454                format!(
6455                    r#"{root}/
6456  public/lottie/
6457    syntax-tree.json
6458      search: {{ "something": "static" }}  <==== selected
6459  src/
6460    app/(site)/
6461      (about)/jobs/[slug]/
6462        page.tsx
6463          search: static
6464      (blog)/post/[slug]/
6465        page.tsx
6466          search: static
6467    components/
6468      ErrorBoundary.tsx
6469        search: static"#
6470                )
6471            );
6472        });
6473
6474        outline_panel.update_in(cx, |outline_panel, window, cx| {
6475            // Move to 5th element in the list, 3 items down.
6476            for _ in 0..2 {
6477                outline_panel.select_next(&SelectNext, window, cx);
6478            }
6479            outline_panel.collapse_selected_entry(&CollapseSelectedEntry, window, cx);
6480        });
6481        cx.executor()
6482            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6483        cx.run_until_parked();
6484        outline_panel.update(cx, |outline_panel, cx| {
6485            assert_eq!(
6486                display_entries(
6487                    &project,
6488                    &snapshot(outline_panel, cx),
6489                    &outline_panel.cached_entries,
6490                    outline_panel.selected_entry(),
6491                    cx,
6492                ),
6493                format!(
6494                    r#"{root}/
6495  public/lottie/
6496    syntax-tree.json
6497      search: {{ "something": "static" }}
6498  src/
6499    app/(site)/  <==== selected
6500    components/
6501      ErrorBoundary.tsx
6502        search: static"#
6503                )
6504            );
6505        });
6506
6507        outline_panel.update_in(cx, |outline_panel, window, cx| {
6508            // Move to the next visible non-FS entry
6509            for _ in 0..3 {
6510                outline_panel.select_next(&SelectNext, window, cx);
6511            }
6512        });
6513        cx.run_until_parked();
6514        outline_panel.update(cx, |outline_panel, cx| {
6515            assert_eq!(
6516                display_entries(
6517                    &project,
6518                    &snapshot(outline_panel, cx),
6519                    &outline_panel.cached_entries,
6520                    outline_panel.selected_entry(),
6521                    cx,
6522                ),
6523                format!(
6524                    r#"{root}/
6525  public/lottie/
6526    syntax-tree.json
6527      search: {{ "something": "static" }}
6528  src/
6529    app/(site)/
6530    components/
6531      ErrorBoundary.tsx
6532        search: static  <==== selected"#
6533                )
6534            );
6535        });
6536
6537        outline_panel.update_in(cx, |outline_panel, window, cx| {
6538            outline_panel
6539                .active_editor()
6540                .expect("Should have an active editor")
6541                .update(cx, |editor, cx| {
6542                    editor.toggle_fold(&editor::actions::ToggleFold, window, cx)
6543                });
6544        });
6545        cx.executor()
6546            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6547        cx.run_until_parked();
6548        outline_panel.update(cx, |outline_panel, cx| {
6549            assert_eq!(
6550                display_entries(
6551                    &project,
6552                    &snapshot(outline_panel, cx),
6553                    &outline_panel.cached_entries,
6554                    outline_panel.selected_entry(),
6555                    cx,
6556                ),
6557                format!(
6558                    r#"{root}/
6559  public/lottie/
6560    syntax-tree.json
6561      search: {{ "something": "static" }}
6562  src/
6563    app/(site)/
6564    components/
6565      ErrorBoundary.tsx  <==== selected"#
6566                )
6567            );
6568        });
6569
6570        outline_panel.update_in(cx, |outline_panel, window, cx| {
6571            outline_panel
6572                .active_editor()
6573                .expect("Should have an active editor")
6574                .update(cx, |editor, cx| {
6575                    editor.toggle_fold(&editor::actions::ToggleFold, window, cx)
6576                });
6577        });
6578        cx.executor()
6579            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
6580        cx.run_until_parked();
6581        outline_panel.update(cx, |outline_panel, cx| {
6582            assert_eq!(
6583                display_entries(
6584                    &project,
6585                    &snapshot(outline_panel, cx),
6586                    &outline_panel.cached_entries,
6587                    outline_panel.selected_entry(),
6588                    cx,
6589                ),
6590                format!(
6591                    r#"{root}/
6592  public/lottie/
6593    syntax-tree.json
6594      search: {{ "something": "static" }}
6595  src/
6596    app/(site)/
6597    components/
6598      ErrorBoundary.tsx  <==== selected
6599        search: static"#
6600                )
6601            );
6602        });
6603    }
6604
6605    async fn add_outline_panel(
6606        project: &Entity<Project>,
6607        cx: &mut TestAppContext,
6608    ) -> WindowHandle<Workspace> {
6609        let window = cx.add_window(|window, cx| Workspace::test_new(project.clone(), window, cx));
6610
6611        let outline_panel = window
6612            .update(cx, |_, window, cx| {
6613                cx.spawn_in(window, async |this, cx| {
6614                    OutlinePanel::load(this, cx.clone()).await
6615                })
6616            })
6617            .unwrap()
6618            .await
6619            .expect("Failed to load outline panel");
6620
6621        window
6622            .update(cx, |workspace, window, cx| {
6623                workspace.add_panel(outline_panel, window, cx);
6624            })
6625            .unwrap();
6626        window
6627    }
6628
6629    fn outline_panel(
6630        workspace: &WindowHandle<Workspace>,
6631        cx: &mut TestAppContext,
6632    ) -> Entity<OutlinePanel> {
6633        workspace
6634            .update(cx, |workspace, _, cx| {
6635                workspace
6636                    .panel::<OutlinePanel>(cx)
6637                    .expect("no outline panel")
6638            })
6639            .unwrap()
6640    }
6641
6642    fn display_entries(
6643        project: &Entity<Project>,
6644        multi_buffer_snapshot: &MultiBufferSnapshot,
6645        cached_entries: &[CachedEntry],
6646        selected_entry: Option<&PanelEntry>,
6647        cx: &mut App,
6648    ) -> String {
6649        let mut display_string = String::new();
6650        for entry in cached_entries {
6651            if !display_string.is_empty() {
6652                display_string += "\n";
6653            }
6654            for _ in 0..entry.depth {
6655                display_string += "  ";
6656            }
6657            display_string += &match &entry.entry {
6658                PanelEntry::Fs(entry) => match entry {
6659                    FsEntry::ExternalFile(_) => {
6660                        panic!("Did not cover external files with tests")
6661                    }
6662                    FsEntry::Directory(directory) => {
6663                        match project
6664                            .read(cx)
6665                            .worktree_for_id(directory.worktree_id, cx)
6666                            .and_then(|worktree| {
6667                                if worktree.read(cx).root_entry() == Some(&directory.entry.entry) {
6668                                    Some(worktree.read(cx).abs_path())
6669                                } else {
6670                                    None
6671                                }
6672                            }) {
6673                            Some(root_path) => format!(
6674                                "{}/{}",
6675                                root_path.display(),
6676                                directory.entry.path.display(),
6677                            ),
6678                            None => format!(
6679                                "{}/",
6680                                directory
6681                                    .entry
6682                                    .path
6683                                    .file_name()
6684                                    .unwrap_or_default()
6685                                    .to_string_lossy()
6686                            ),
6687                        }
6688                    }
6689                    FsEntry::File(file) => file
6690                        .entry
6691                        .path
6692                        .file_name()
6693                        .map(|name| name.to_string_lossy().to_string())
6694                        .unwrap_or_default(),
6695                },
6696                PanelEntry::FoldedDirs(folded_dirs) => folded_dirs
6697                    .entries
6698                    .iter()
6699                    .filter_map(|dir| dir.path.file_name())
6700                    .map(|name| name.to_string_lossy().to_string() + "/")
6701                    .collect(),
6702                PanelEntry::Outline(outline_entry) => match outline_entry {
6703                    OutlineEntry::Excerpt(_) => continue,
6704                    OutlineEntry::Outline(outline_entry) => {
6705                        format!("outline: {}", outline_entry.outline.text)
6706                    }
6707                },
6708                PanelEntry::Search(search_entry) => {
6709                    format!(
6710                        "search: {}",
6711                        search_entry
6712                            .render_data
6713                            .get_or_init(|| SearchData::new(
6714                                &search_entry.match_range,
6715                                multi_buffer_snapshot
6716                            ))
6717                            .context_text
6718                    )
6719                }
6720            };
6721
6722            if Some(&entry.entry) == selected_entry {
6723                display_string += SELECTED_MARKER;
6724            }
6725        }
6726        display_string
6727    }
6728
6729    fn init_test(cx: &mut TestAppContext) {
6730        cx.update(|cx| {
6731            let settings = SettingsStore::test(cx);
6732            cx.set_global(settings);
6733
6734            theme::init(theme::LoadThemes::JustBase, cx);
6735
6736            language::init(cx);
6737            editor::init(cx);
6738            workspace::init_settings(cx);
6739            Project::init_settings(cx);
6740            project_search::init(cx);
6741            super::init(cx);
6742        });
6743    }
6744
6745    // Based on https://github.com/rust-lang/rust-analyzer/
6746    async fn populate_with_test_ra_project(fs: &FakeFs, root: &str) {
6747        fs.insert_tree(
6748            root,
6749            json!({
6750                    "crates": {
6751                        "ide": {
6752                            "src": {
6753                                "inlay_hints": {
6754                                    "fn_lifetime_fn.rs": r##"
6755        pub(super) fn hints(
6756            acc: &mut Vec<InlayHint>,
6757            config: &InlayHintsConfig,
6758            func: ast::Fn,
6759        ) -> Option<()> {
6760            // ... snip
6761
6762            let mut used_names: FxHashMap<SmolStr, usize> =
6763                match config.param_names_for_lifetime_elision_hints {
6764                    true => generic_param_list
6765                        .iter()
6766                        .flat_map(|gpl| gpl.lifetime_params())
6767                        .filter_map(|param| param.lifetime())
6768                        .filter_map(|lt| Some((SmolStr::from(lt.text().as_str().get(1..)?), 0)))
6769                        .collect(),
6770                    false => Default::default(),
6771                };
6772            {
6773                let mut potential_lt_refs = potential_lt_refs.iter().filter(|&&(.., is_elided)| is_elided);
6774                if self_param.is_some() && potential_lt_refs.next().is_some() {
6775                    allocated_lifetimes.push(if config.param_names_for_lifetime_elision_hints {
6776                        // self can't be used as a lifetime, so no need to check for collisions
6777                        "'self".into()
6778                    } else {
6779                        gen_idx_name()
6780                    });
6781                }
6782                potential_lt_refs.for_each(|(name, ..)| {
6783                    let name = match name {
6784                        Some(it) if config.param_names_for_lifetime_elision_hints => {
6785                            if let Some(c) = used_names.get_mut(it.text().as_str()) {
6786                                *c += 1;
6787                                SmolStr::from(format!("'{text}{c}", text = it.text().as_str()))
6788                            } else {
6789                                used_names.insert(it.text().as_str().into(), 0);
6790                                SmolStr::from_iter(["\'", it.text().as_str()])
6791                            }
6792                        }
6793                        _ => gen_idx_name(),
6794                    };
6795                    allocated_lifetimes.push(name);
6796                });
6797            }
6798
6799            // ... snip
6800        }
6801
6802        // ... snip
6803
6804            #[test]
6805            fn hints_lifetimes_named() {
6806                check_with_config(
6807                    InlayHintsConfig { param_names_for_lifetime_elision_hints: true, ..TEST_CONFIG },
6808                    r#"
6809        fn nested_in<'named>(named: &        &X<      &()>) {}
6810        //          ^'named1, 'named2, 'named3, $
6811                                  //^'named1 ^'named2 ^'named3
6812        "#,
6813                );
6814            }
6815
6816        // ... snip
6817        "##,
6818                                },
6819                        "inlay_hints.rs": r#"
6820    #[derive(Clone, Debug, PartialEq, Eq)]
6821    pub struct InlayHintsConfig {
6822        // ... snip
6823        pub param_names_for_lifetime_elision_hints: bool,
6824        pub max_length: Option<usize>,
6825        // ... snip
6826    }
6827
6828    impl Config {
6829        pub fn inlay_hints(&self) -> InlayHintsConfig {
6830            InlayHintsConfig {
6831                // ... snip
6832                param_names_for_lifetime_elision_hints: self
6833                    .inlayHints_lifetimeElisionHints_useParameterNames()
6834                    .to_owned(),
6835                max_length: self.inlayHints_maxLength().to_owned(),
6836                // ... snip
6837            }
6838        }
6839    }
6840    "#,
6841                        "static_index.rs": r#"
6842// ... snip
6843        fn add_file(&mut self, file_id: FileId) {
6844            let current_crate = crates_for(self.db, file_id).pop().map(Into::into);
6845            let folds = self.analysis.folding_ranges(file_id).unwrap();
6846            let inlay_hints = self
6847                .analysis
6848                .inlay_hints(
6849                    &InlayHintsConfig {
6850                        // ... snip
6851                        closure_style: hir::ClosureStyle::ImplFn,
6852                        param_names_for_lifetime_elision_hints: false,
6853                        binding_mode_hints: false,
6854                        max_length: Some(25),
6855                        closure_capture_hints: false,
6856                        // ... snip
6857                    },
6858                    file_id,
6859                    None,
6860                )
6861                .unwrap();
6862            // ... snip
6863    }
6864// ... snip
6865    "#
6866                            }
6867                        },
6868                        "rust-analyzer": {
6869                            "src": {
6870                                "cli": {
6871                                    "analysis_stats.rs": r#"
6872        // ... snip
6873                for &file_id in &file_ids {
6874                    _ = analysis.inlay_hints(
6875                        &InlayHintsConfig {
6876                            // ... snip
6877                            implicit_drop_hints: true,
6878                            lifetime_elision_hints: ide::LifetimeElisionHints::Always,
6879                            param_names_for_lifetime_elision_hints: true,
6880                            hide_named_constructor_hints: false,
6881                            hide_closure_initialization_hints: false,
6882                            closure_style: hir::ClosureStyle::ImplFn,
6883                            max_length: Some(25),
6884                            closing_brace_hints_min_lines: Some(20),
6885                            fields_to_resolve: InlayFieldsToResolve::empty(),
6886                            range_exclusive_hints: true,
6887                        },
6888                        file_id.into(),
6889                        None,
6890                    );
6891                }
6892        // ... snip
6893                                    "#,
6894                                },
6895                                "config.rs": r#"
6896                config_data! {
6897                    /// Configs that only make sense when they are set by a client. As such they can only be defined
6898                    /// by setting them using client's settings (e.g `settings.json` on VS Code).
6899                    client: struct ClientDefaultConfigData <- ClientConfigInput -> {
6900                        // ... snip
6901                        /// Maximum length for inlay hints. Set to null to have an unlimited length.
6902                        inlayHints_maxLength: Option<usize>                        = Some(25),
6903                        // ... snip
6904                        /// Whether to prefer using parameter names as the name for elided lifetime hints if possible.
6905                        inlayHints_lifetimeElisionHints_useParameterNames: bool    = false,
6906                        // ... snip
6907                    }
6908                }
6909
6910                impl Config {
6911                    // ... snip
6912                    pub fn inlay_hints(&self) -> InlayHintsConfig {
6913                        InlayHintsConfig {
6914                            // ... snip
6915                            param_names_for_lifetime_elision_hints: self
6916                                .inlayHints_lifetimeElisionHints_useParameterNames()
6917                                .to_owned(),
6918                            max_length: self.inlayHints_maxLength().to_owned(),
6919                            // ... snip
6920                        }
6921                    }
6922                    // ... snip
6923                }
6924                "#
6925                                }
6926                        }
6927                    }
6928            }),
6929        )
6930        .await;
6931    }
6932
6933    fn rust_lang() -> Language {
6934        Language::new(
6935            LanguageConfig {
6936                name: "Rust".into(),
6937                matcher: LanguageMatcher {
6938                    path_suffixes: vec!["rs".to_string()],
6939                    ..Default::default()
6940                },
6941                ..Default::default()
6942            },
6943            Some(tree_sitter_rust::LANGUAGE.into()),
6944        )
6945        .with_highlights_query(
6946            r#"
6947                (field_identifier) @field
6948                (struct_expression) @struct
6949            "#,
6950        )
6951        .unwrap()
6952        .with_injection_query(
6953            r#"
6954                (macro_invocation
6955                    (token_tree) @injection.content
6956                    (#set! injection.language "rust"))
6957            "#,
6958        )
6959        .unwrap()
6960    }
6961
6962    fn snapshot(outline_panel: &OutlinePanel, cx: &App) -> MultiBufferSnapshot {
6963        outline_panel
6964            .active_editor()
6965            .unwrap()
6966            .read(cx)
6967            .buffer()
6968            .read(cx)
6969            .snapshot(cx)
6970    }
6971
6972    fn selected_row_text(editor: &Entity<Editor>, cx: &mut App) -> String {
6973        editor.update(cx, |editor, cx| {
6974                let selections = editor.selections.all::<language::Point>(cx);
6975                assert_eq!(selections.len(), 1, "Active editor should have exactly one selection after any outline panel interactions");
6976                let selection = selections.first().unwrap();
6977                let multi_buffer_snapshot = editor.buffer().read(cx).snapshot(cx);
6978                let line_start = language::Point::new(selection.start.row, 0);
6979                let line_end = multi_buffer_snapshot.clip_point(language::Point::new(selection.end.row, u32::MAX), language::Bias::Right);
6980                multi_buffer_snapshot.text_for_range(line_start..line_end).collect::<String>().trim().to_owned()
6981        })
6982    }
6983
6984    #[gpui::test]
6985    async fn test_outline_keyboard_expand_collapse(cx: &mut TestAppContext) {
6986        init_test(cx);
6987
6988        let fs = FakeFs::new(cx.background_executor.clone());
6989        fs.insert_tree(
6990            "/test",
6991            json!({
6992                "src": {
6993                    "lib.rs": indoc!("
6994                            mod outer {
6995                                pub struct OuterStruct {
6996                                    field: String,
6997                                }
6998                                impl OuterStruct {
6999                                    pub fn new() -> Self {
7000                                        Self { field: String::new() }
7001                                    }
7002                                    pub fn method(&self) {
7003                                        println!(\"{}\", self.field);
7004                                    }
7005                                }
7006                                mod inner {
7007                                    pub fn inner_function() {
7008                                        let x = 42;
7009                                        println!(\"{}\", x);
7010                                    }
7011                                    pub struct InnerStruct {
7012                                        value: i32,
7013                                    }
7014                                }
7015                            }
7016                            fn main() {
7017                                let s = outer::OuterStruct::new();
7018                                s.method();
7019                            }
7020                        "),
7021                }
7022            }),
7023        )
7024        .await;
7025
7026        let project = Project::test(fs.clone(), ["/test".as_ref()], cx).await;
7027        project.read_with(cx, |project, _| {
7028            project.languages().add(Arc::new(
7029                rust_lang()
7030                    .with_outline_query(
7031                        r#"
7032                            (struct_item
7033                                (visibility_modifier)? @context
7034                                "struct" @context
7035                                name: (_) @name) @item
7036                            (impl_item
7037                                "impl" @context
7038                                trait: (_)? @context
7039                                "for"? @context
7040                                type: (_) @context
7041                                body: (_)) @item
7042                            (function_item
7043                                (visibility_modifier)? @context
7044                                "fn" @context
7045                                name: (_) @name
7046                                parameters: (_) @context) @item
7047                            (mod_item
7048                                (visibility_modifier)? @context
7049                                "mod" @context
7050                                name: (_) @name) @item
7051                            (enum_item
7052                                (visibility_modifier)? @context
7053                                "enum" @context
7054                                name: (_) @name) @item
7055                            (field_declaration
7056                                (visibility_modifier)? @context
7057                                name: (_) @name
7058                                ":" @context
7059                                type: (_) @context) @item
7060                            "#,
7061                    )
7062                    .unwrap(),
7063            ))
7064        });
7065        let workspace = add_outline_panel(&project, cx).await;
7066        let cx = &mut VisualTestContext::from_window(*workspace, cx);
7067        let outline_panel = outline_panel(&workspace, cx);
7068
7069        outline_panel.update_in(cx, |outline_panel, window, cx| {
7070            outline_panel.set_active(true, window, cx)
7071        });
7072
7073        workspace
7074            .update(cx, |workspace, window, cx| {
7075                workspace.open_abs_path(
7076                    PathBuf::from("/test/src/lib.rs"),
7077                    OpenOptions {
7078                        visible: Some(OpenVisible::All),
7079                        ..Default::default()
7080                    },
7081                    window,
7082                    cx,
7083                )
7084            })
7085            .unwrap()
7086            .await
7087            .unwrap();
7088
7089        cx.executor()
7090            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(500));
7091        cx.run_until_parked();
7092
7093        // Force another update cycle to ensure outlines are fetched
7094        outline_panel.update_in(cx, |panel, window, cx| {
7095            panel.update_non_fs_items(window, cx);
7096            panel.update_cached_entries(Some(UPDATE_DEBOUNCE), window, cx);
7097        });
7098        cx.executor()
7099            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(500));
7100        cx.run_until_parked();
7101
7102        outline_panel.update(cx, |outline_panel, cx| {
7103            assert_eq!(
7104                display_entries(
7105                    &project,
7106                    &snapshot(outline_panel, cx),
7107                    &outline_panel.cached_entries,
7108                    outline_panel.selected_entry(),
7109                    cx,
7110                ),
7111                indoc!(
7112                    "
7113outline: mod outer  <==== selected
7114  outline: pub struct OuterStruct
7115    outline: field: String
7116  outline: impl OuterStruct
7117    outline: pub fn new()
7118    outline: pub fn method(&self)
7119  outline: mod inner
7120    outline: pub fn inner_function()
7121    outline: pub struct InnerStruct
7122      outline: value: i32
7123outline: fn main()"
7124                )
7125            );
7126        });
7127
7128        let parent_outline = outline_panel
7129            .read_with(cx, |panel, _cx| {
7130                panel
7131                    .cached_entries
7132                    .iter()
7133                    .find_map(|entry| match &entry.entry {
7134                        PanelEntry::Outline(OutlineEntry::Outline(outline))
7135                            if panel
7136                                .outline_children_cache
7137                                .get(&outline.buffer_id)
7138                                .and_then(|children_map| {
7139                                    let key =
7140                                        (outline.outline.range.clone(), outline.outline.depth);
7141                                    children_map.get(&key)
7142                                })
7143                                .copied()
7144                                .unwrap_or(false) =>
7145                        {
7146                            Some(entry.entry.clone())
7147                        }
7148                        _ => None,
7149                    })
7150            })
7151            .expect("Should find an outline with children");
7152
7153        outline_panel.update_in(cx, |panel, window, cx| {
7154            panel.select_entry(parent_outline.clone(), true, window, cx);
7155            panel.collapse_selected_entry(&CollapseSelectedEntry, window, cx);
7156        });
7157        cx.executor()
7158            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7159        cx.run_until_parked();
7160
7161        outline_panel.update(cx, |outline_panel, cx| {
7162            assert_eq!(
7163                display_entries(
7164                    &project,
7165                    &snapshot(outline_panel, cx),
7166                    &outline_panel.cached_entries,
7167                    outline_panel.selected_entry(),
7168                    cx,
7169                ),
7170                indoc!(
7171                    "
7172outline: mod outer  <==== selected
7173outline: fn main()"
7174                )
7175            );
7176        });
7177
7178        outline_panel.update_in(cx, |panel, window, cx| {
7179            panel.expand_selected_entry(&ExpandSelectedEntry, window, cx);
7180        });
7181        cx.executor()
7182            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7183        cx.run_until_parked();
7184
7185        outline_panel.update(cx, |outline_panel, cx| {
7186            assert_eq!(
7187                display_entries(
7188                    &project,
7189                    &snapshot(outline_panel, cx),
7190                    &outline_panel.cached_entries,
7191                    outline_panel.selected_entry(),
7192                    cx,
7193                ),
7194                indoc!(
7195                    "
7196outline: mod outer  <==== selected
7197  outline: pub struct OuterStruct
7198    outline: field: String
7199  outline: impl OuterStruct
7200    outline: pub fn new()
7201    outline: pub fn method(&self)
7202  outline: mod inner
7203    outline: pub fn inner_function()
7204    outline: pub struct InnerStruct
7205      outline: value: i32
7206outline: fn main()"
7207                )
7208            );
7209        });
7210
7211        outline_panel.update_in(cx, |panel, window, cx| {
7212            panel.collapsed_entries.clear();
7213            panel.update_cached_entries(None, window, cx);
7214        });
7215        cx.executor()
7216            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7217        cx.run_until_parked();
7218
7219        outline_panel.update_in(cx, |panel, window, cx| {
7220            let outlines_with_children: Vec<_> = panel
7221                .cached_entries
7222                .iter()
7223                .filter_map(|entry| match &entry.entry {
7224                    PanelEntry::Outline(OutlineEntry::Outline(outline))
7225                        if panel
7226                            .outline_children_cache
7227                            .get(&outline.buffer_id)
7228                            .and_then(|children_map| {
7229                                let key = (outline.outline.range.clone(), outline.outline.depth);
7230                                children_map.get(&key)
7231                            })
7232                            .copied()
7233                            .unwrap_or(false) =>
7234                    {
7235                        Some(entry.entry.clone())
7236                    }
7237                    _ => None,
7238                })
7239                .collect();
7240
7241            for outline in outlines_with_children {
7242                panel.select_entry(outline, false, window, cx);
7243                panel.collapse_selected_entry(&CollapseSelectedEntry, window, cx);
7244            }
7245        });
7246        cx.executor()
7247            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7248        cx.run_until_parked();
7249
7250        outline_panel.update(cx, |outline_panel, cx| {
7251            assert_eq!(
7252                display_entries(
7253                    &project,
7254                    &snapshot(outline_panel, cx),
7255                    &outline_panel.cached_entries,
7256                    outline_panel.selected_entry(),
7257                    cx,
7258                ),
7259                indoc!(
7260                    "
7261outline: mod outer
7262outline: fn main()"
7263                )
7264            );
7265        });
7266
7267        let collapsed_entries_count =
7268            outline_panel.read_with(cx, |panel, _| panel.collapsed_entries.len());
7269        assert!(
7270            collapsed_entries_count > 0,
7271            "Should have collapsed entries tracked"
7272        );
7273    }
7274
7275    #[gpui::test]
7276    async fn test_outline_click_toggle_behavior(cx: &mut TestAppContext) {
7277        init_test(cx);
7278
7279        let fs = FakeFs::new(cx.background_executor.clone());
7280        fs.insert_tree(
7281            "/test",
7282            json!({
7283                "src": {
7284                    "main.rs": indoc!("
7285                            struct Config {
7286                                name: String,
7287                                value: i32,
7288                            }
7289                            impl Config {
7290                                fn new(name: String) -> Self {
7291                                    Self { name, value: 0 }
7292                                }
7293                                fn get_value(&self) -> i32 {
7294                                    self.value
7295                                }
7296                            }
7297                            enum Status {
7298                                Active,
7299                                Inactive,
7300                            }
7301                            fn process_config(config: Config) -> Status {
7302                                if config.get_value() > 0 {
7303                                    Status::Active
7304                                } else {
7305                                    Status::Inactive
7306                                }
7307                            }
7308                            fn main() {
7309                                let config = Config::new(\"test\".to_string());
7310                                let status = process_config(config);
7311                            }
7312                        "),
7313                }
7314            }),
7315        )
7316        .await;
7317
7318        let project = Project::test(fs.clone(), ["/test".as_ref()], cx).await;
7319        project.read_with(cx, |project, _| {
7320            project.languages().add(Arc::new(
7321                rust_lang()
7322                    .with_outline_query(
7323                        r#"
7324                            (struct_item
7325                                (visibility_modifier)? @context
7326                                "struct" @context
7327                                name: (_) @name) @item
7328                            (impl_item
7329                                "impl" @context
7330                                trait: (_)? @context
7331                                "for"? @context
7332                                type: (_) @context
7333                                body: (_)) @item
7334                            (function_item
7335                                (visibility_modifier)? @context
7336                                "fn" @context
7337                                name: (_) @name
7338                                parameters: (_) @context) @item
7339                            (mod_item
7340                                (visibility_modifier)? @context
7341                                "mod" @context
7342                                name: (_) @name) @item
7343                            (enum_item
7344                                (visibility_modifier)? @context
7345                                "enum" @context
7346                                name: (_) @name) @item
7347                            (field_declaration
7348                                (visibility_modifier)? @context
7349                                name: (_) @name
7350                                ":" @context
7351                                type: (_) @context) @item
7352                            "#,
7353                    )
7354                    .unwrap(),
7355            ))
7356        });
7357
7358        let workspace = add_outline_panel(&project, cx).await;
7359        let cx = &mut VisualTestContext::from_window(*workspace, cx);
7360        let outline_panel = outline_panel(&workspace, cx);
7361
7362        outline_panel.update_in(cx, |outline_panel, window, cx| {
7363            outline_panel.set_active(true, window, cx)
7364        });
7365
7366        let _editor = workspace
7367            .update(cx, |workspace, window, cx| {
7368                workspace.open_abs_path(
7369                    PathBuf::from("/test/src/main.rs"),
7370                    OpenOptions {
7371                        visible: Some(OpenVisible::All),
7372                        ..Default::default()
7373                    },
7374                    window,
7375                    cx,
7376                )
7377            })
7378            .unwrap()
7379            .await
7380            .unwrap();
7381
7382        cx.executor()
7383            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7384        cx.run_until_parked();
7385
7386        outline_panel.update(cx, |outline_panel, _cx| {
7387            outline_panel.selected_entry = SelectedEntry::None;
7388        });
7389
7390        // Check initial state - all entries should be expanded by default
7391        outline_panel.update(cx, |outline_panel, cx| {
7392            assert_eq!(
7393                display_entries(
7394                    &project,
7395                    &snapshot(outline_panel, cx),
7396                    &outline_panel.cached_entries,
7397                    outline_panel.selected_entry(),
7398                    cx,
7399                ),
7400                indoc!(
7401                    "
7402outline: struct Config
7403  outline: name: String
7404  outline: value: i32
7405outline: impl Config
7406  outline: fn new(name: String)
7407  outline: fn get_value(&self)
7408outline: enum Status
7409outline: fn process_config(config: Config)
7410outline: fn main()"
7411                )
7412            );
7413        });
7414
7415        outline_panel.update(cx, |outline_panel, _cx| {
7416            outline_panel.selected_entry = SelectedEntry::None;
7417        });
7418
7419        cx.update(|window, cx| {
7420            outline_panel.update(cx, |outline_panel, cx| {
7421                outline_panel.select_first(&SelectFirst, window, cx);
7422            });
7423        });
7424
7425        cx.executor()
7426            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7427        cx.run_until_parked();
7428
7429        outline_panel.update(cx, |outline_panel, cx| {
7430            assert_eq!(
7431                display_entries(
7432                    &project,
7433                    &snapshot(outline_panel, cx),
7434                    &outline_panel.cached_entries,
7435                    outline_panel.selected_entry(),
7436                    cx,
7437                ),
7438                indoc!(
7439                    "
7440outline: struct Config  <==== selected
7441  outline: name: String
7442  outline: value: i32
7443outline: impl Config
7444  outline: fn new(name: String)
7445  outline: fn get_value(&self)
7446outline: enum Status
7447outline: fn process_config(config: Config)
7448outline: fn main()"
7449                )
7450            );
7451        });
7452
7453        cx.update(|window, cx| {
7454            outline_panel.update(cx, |outline_panel, cx| {
7455                outline_panel.open_selected_entry(&OpenSelectedEntry, window, cx);
7456            });
7457        });
7458
7459        cx.executor()
7460            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7461        cx.run_until_parked();
7462
7463        outline_panel.update(cx, |outline_panel, cx| {
7464            assert_eq!(
7465                display_entries(
7466                    &project,
7467                    &snapshot(outline_panel, cx),
7468                    &outline_panel.cached_entries,
7469                    outline_panel.selected_entry(),
7470                    cx,
7471                ),
7472                indoc!(
7473                    "
7474outline: struct Config  <==== selected
7475outline: impl Config
7476  outline: fn new(name: String)
7477  outline: fn get_value(&self)
7478outline: enum Status
7479outline: fn process_config(config: Config)
7480outline: fn main()"
7481                )
7482            );
7483        });
7484
7485        cx.update(|window, cx| {
7486            outline_panel.update(cx, |outline_panel, cx| {
7487                outline_panel.open_selected_entry(&OpenSelectedEntry, window, cx);
7488            });
7489        });
7490
7491        cx.executor()
7492            .advance_clock(UPDATE_DEBOUNCE + Duration::from_millis(100));
7493        cx.run_until_parked();
7494
7495        outline_panel.update(cx, |outline_panel, cx| {
7496            assert_eq!(
7497                display_entries(
7498                    &project,
7499                    &snapshot(outline_panel, cx),
7500                    &outline_panel.cached_entries,
7501                    outline_panel.selected_entry(),
7502                    cx,
7503                ),
7504                indoc!(
7505                    "
7506outline: struct Config  <==== selected
7507  outline: name: String
7508  outline: value: i32
7509outline: impl Config
7510  outline: fn new(name: String)
7511  outline: fn get_value(&self)
7512outline: enum Status
7513outline: fn process_config(config: Config)
7514outline: fn main()"
7515                )
7516            );
7517        });
7518    }
7519}