1mod project_panel_settings;
   2mod utils;
   3
   4use anyhow::{Context as _, Result};
   5use client::{ErrorCode, ErrorExt};
   6use collections::{BTreeSet, HashMap, hash_map};
   7use command_palette_hooks::CommandPaletteFilter;
   8use db::kvp::KEY_VALUE_STORE;
   9use editor::{
  10    Editor, EditorEvent,
  11    items::{
  12        entry_diagnostic_aware_icon_decoration_and_color,
  13        entry_diagnostic_aware_icon_name_and_color, entry_git_aware_label_color,
  14    },
  15};
  16use file_icons::FileIcons;
  17use git::status::GitSummary;
  18use git_ui::file_diff_view::FileDiffView;
  19use gpui::{
  20    Action, AnyElement, App, AsyncWindowContext, Bounds, ClipboardItem, Context, CursorStyle,
  21    DismissEvent, Div, DragMoveEvent, Entity, EventEmitter, ExternalPaths, FocusHandle, Focusable,
  22    Hsla, InteractiveElement, KeyContext, ListHorizontalSizingBehavior, ListSizingBehavior,
  23    Modifiers, ModifiersChangedEvent, MouseButton, MouseDownEvent, ParentElement, Pixels, Point,
  24    PromptLevel, Render, ScrollStrategy, Stateful, Styled, Subscription, Task,
  25    UniformListScrollHandle, WeakEntity, Window, actions, anchored, deferred, div, hsla,
  26    linear_color_stop, linear_gradient, point, px, size, transparent_white, uniform_list,
  27};
  28use language::DiagnosticSeverity;
  29use menu::{Confirm, SelectFirst, SelectLast, SelectNext, SelectPrevious};
  30use project::{
  31    Entry, EntryKind, Fs, GitEntry, GitEntryRef, GitTraversal, Project, ProjectEntryId,
  32    ProjectPath, Worktree, WorktreeId,
  33    git_store::{GitStoreEvent, RepositoryEvent, git_traversal::ChildEntriesGitIter},
  34    project_settings::GoToDiagnosticSeverityFilter,
  35};
  36use project_panel_settings::ProjectPanelSettings;
  37use rayon::slice::ParallelSliceMut;
  38use schemars::JsonSchema;
  39use serde::{Deserialize, Serialize};
  40use settings::{
  41    DockSide, ProjectPanelEntrySpacing, Settings, SettingsStore, ShowDiagnostics, ShowIndentGuides,
  42    update_settings_file,
  43};
  44use smallvec::SmallVec;
  45use std::{any::TypeId, time::Instant};
  46use std::{
  47    cell::OnceCell,
  48    cmp,
  49    collections::HashSet,
  50    ops::Range,
  51    path::{Path, PathBuf},
  52    sync::Arc,
  53    time::Duration,
  54};
  55use theme::ThemeSettings;
  56use ui::{
  57    Color, ContextMenu, DecoratedIcon, Divider, Icon, IconDecoration, IconDecorationKind,
  58    IndentGuideColors, IndentGuideLayout, KeyBinding, Label, LabelSize, ListItem, ListItemSpacing,
  59    ScrollAxes, ScrollableHandle, Scrollbars, StickyCandidate, Tooltip, WithScrollbar, prelude::*,
  60    v_flex,
  61};
  62use util::{ResultExt, TakeUntilExt, TryFutureExt, maybe, paths::compare_paths, rel_path::RelPath};
  63use workspace::{
  64    DraggedSelection, OpenInTerminal, OpenOptions, OpenVisible, PreviewTabsSettings, SelectedEntry,
  65    SplitDirection, Workspace,
  66    dock::{DockPosition, Panel, PanelEvent},
  67    notifications::{DetachAndPromptErr, NotifyResultExt, NotifyTaskExt},
  68};
  69use worktree::CreatedEntry;
  70use zed_actions::workspace::OpenWithSystem;
  71
  72const PROJECT_PANEL_KEY: &str = "ProjectPanel";
  73const NEW_ENTRY_ID: ProjectEntryId = ProjectEntryId::MAX;
  74
  75struct VisibleEntriesForWorktree {
  76    worktree_id: WorktreeId,
  77    entries: Vec<GitEntry>,
  78    index: OnceCell<HashSet<Arc<RelPath>>>,
  79}
  80
  81struct State {
  82    last_worktree_root_id: Option<ProjectEntryId>,
  83    /// Maps from leaf project entry ID to the currently selected ancestor.
  84    /// Relevant only for auto-fold dirs, where a single project panel entry may actually consist of several
  85    /// project entries (and all non-leaf nodes are guaranteed to be directories).
  86    ancestors: HashMap<ProjectEntryId, FoldedAncestors>,
  87    visible_entries: Vec<VisibleEntriesForWorktree>,
  88    max_width_item_index: Option<usize>,
  89    // Currently selected leaf entry (see auto-folding for a definition of that) in a file tree
  90    selection: Option<SelectedEntry>,
  91    edit_state: Option<EditState>,
  92    unfolded_dir_ids: HashSet<ProjectEntryId>,
  93    expanded_dir_ids: HashMap<WorktreeId, Vec<ProjectEntryId>>,
  94}
  95
  96impl State {
  97    fn derive(old: &Self) -> Self {
  98        Self {
  99            last_worktree_root_id: None,
 100            ancestors: Default::default(),
 101            visible_entries: Default::default(),
 102            max_width_item_index: None,
 103            edit_state: old.edit_state.clone(),
 104            unfolded_dir_ids: old.unfolded_dir_ids.clone(),
 105            selection: old.selection,
 106            expanded_dir_ids: old.expanded_dir_ids.clone(),
 107        }
 108    }
 109}
 110
 111pub struct ProjectPanel {
 112    project: Entity<Project>,
 113    fs: Arc<dyn Fs>,
 114    focus_handle: FocusHandle,
 115    scroll_handle: UniformListScrollHandle,
 116    // An update loop that keeps incrementing/decrementing scroll offset while there is a dragged entry that's
 117    // hovered over the start/end of a list.
 118    hover_scroll_task: Option<Task<()>>,
 119    rendered_entries_len: usize,
 120    folded_directory_drag_target: Option<FoldedDirectoryDragTarget>,
 121    drag_target_entry: Option<DragTarget>,
 122    marked_entries: Vec<SelectedEntry>,
 123    context_menu: Option<(Entity<ContextMenu>, Point<Pixels>, Subscription)>,
 124    filename_editor: Entity<Editor>,
 125    clipboard: Option<ClipboardEntry>,
 126    _dragged_entry_destination: Option<Arc<Path>>,
 127    workspace: WeakEntity<Workspace>,
 128    width: Option<Pixels>,
 129    pending_serialization: Task<Option<()>>,
 130    diagnostics: HashMap<(WorktreeId, Arc<RelPath>), DiagnosticSeverity>,
 131    diagnostic_summary_update: Task<()>,
 132    // We keep track of the mouse down state on entries so we don't flash the UI
 133    // in case a user clicks to open a file.
 134    mouse_down: bool,
 135    hover_expand_task: Option<Task<()>>,
 136    previous_drag_position: Option<Point<Pixels>>,
 137    sticky_items_count: usize,
 138    last_reported_update: Instant,
 139    update_visible_entries_task: Task<()>,
 140    state: State,
 141}
 142
 143enum DragTarget {
 144    /// Dragging on an entry
 145    Entry {
 146        /// The entry currently under the mouse cursor during a drag operation
 147        entry_id: ProjectEntryId,
 148        /// Highlight this entry along with all of its children
 149        highlight_entry_id: ProjectEntryId,
 150    },
 151    /// Dragging on background
 152    Background,
 153}
 154
 155#[derive(Copy, Clone, Debug)]
 156struct FoldedDirectoryDragTarget {
 157    entry_id: ProjectEntryId,
 158    index: usize,
 159    /// Whether we are dragging over the delimiter rather than the component itself.
 160    is_delimiter_target: bool,
 161}
 162
 163#[derive(Clone, Debug)]
 164enum ValidationState {
 165    None,
 166    Warning(String),
 167    Error(String),
 168}
 169
 170#[derive(Clone, Debug)]
 171struct EditState {
 172    worktree_id: WorktreeId,
 173    entry_id: ProjectEntryId,
 174    leaf_entry_id: Option<ProjectEntryId>,
 175    is_dir: bool,
 176    depth: usize,
 177    processing_filename: Option<Arc<RelPath>>,
 178    previously_focused: Option<SelectedEntry>,
 179    validation_state: ValidationState,
 180}
 181
 182impl EditState {
 183    fn is_new_entry(&self) -> bool {
 184        self.leaf_entry_id.is_none()
 185    }
 186}
 187
 188#[derive(Clone, Debug)]
 189enum ClipboardEntry {
 190    Copied(BTreeSet<SelectedEntry>),
 191    Cut(BTreeSet<SelectedEntry>),
 192}
 193
 194#[derive(Debug, PartialEq, Eq, Clone)]
 195struct EntryDetails {
 196    filename: String,
 197    icon: Option<SharedString>,
 198    path: Arc<RelPath>,
 199    depth: usize,
 200    kind: EntryKind,
 201    is_ignored: bool,
 202    is_expanded: bool,
 203    is_selected: bool,
 204    is_marked: bool,
 205    is_editing: bool,
 206    is_processing: bool,
 207    is_cut: bool,
 208    sticky: Option<StickyDetails>,
 209    filename_text_color: Color,
 210    diagnostic_severity: Option<DiagnosticSeverity>,
 211    git_status: GitSummary,
 212    is_private: bool,
 213    worktree_id: WorktreeId,
 214    canonical_path: Option<Arc<Path>>,
 215}
 216
 217#[derive(Debug, PartialEq, Eq, Clone)]
 218struct StickyDetails {
 219    sticky_index: usize,
 220}
 221
 222/// Permanently deletes the selected file or directory.
 223#[derive(PartialEq, Clone, Default, Debug, Deserialize, JsonSchema, Action)]
 224#[action(namespace = project_panel)]
 225#[serde(deny_unknown_fields)]
 226struct Delete {
 227    #[serde(default)]
 228    pub skip_prompt: bool,
 229}
 230
 231/// Moves the selected file or directory to the system trash.
 232#[derive(PartialEq, Clone, Default, Debug, Deserialize, JsonSchema, Action)]
 233#[action(namespace = project_panel)]
 234#[serde(deny_unknown_fields)]
 235struct Trash {
 236    #[serde(default)]
 237    pub skip_prompt: bool,
 238}
 239
 240/// Selects the next entry with diagnostics.
 241#[derive(PartialEq, Clone, Default, Debug, Deserialize, JsonSchema, Action)]
 242#[action(namespace = project_panel)]
 243#[serde(deny_unknown_fields)]
 244struct SelectNextDiagnostic {
 245    #[serde(default)]
 246    pub severity: GoToDiagnosticSeverityFilter,
 247}
 248
 249/// Selects the previous entry with diagnostics.
 250#[derive(PartialEq, Clone, Default, Debug, Deserialize, JsonSchema, Action)]
 251#[action(namespace = project_panel)]
 252#[serde(deny_unknown_fields)]
 253struct SelectPrevDiagnostic {
 254    #[serde(default)]
 255    pub severity: GoToDiagnosticSeverityFilter,
 256}
 257
 258actions!(
 259    project_panel,
 260    [
 261        /// Expands the selected entry in the project tree.
 262        ExpandSelectedEntry,
 263        /// Collapses the selected entry in the project tree.
 264        CollapseSelectedEntry,
 265        /// Collapses all entries in the project tree.
 266        CollapseAllEntries,
 267        /// Creates a new directory.
 268        NewDirectory,
 269        /// Creates a new file.
 270        NewFile,
 271        /// Copies the selected file or directory.
 272        Copy,
 273        /// Duplicates the selected file or directory.
 274        Duplicate,
 275        /// Reveals the selected item in the system file manager.
 276        RevealInFileManager,
 277        /// Removes the selected folder from the project.
 278        RemoveFromProject,
 279        /// Cuts the selected file or directory.
 280        Cut,
 281        /// Pastes the previously cut or copied item.
 282        Paste,
 283        /// Renames the selected file or directory.
 284        Rename,
 285        /// Opens the selected file in the editor.
 286        Open,
 287        /// Opens the selected file in a permanent tab.
 288        OpenPermanent,
 289        /// Opens the selected file in a vertical split.
 290        OpenSplitVertical,
 291        /// Opens the selected file in a horizontal split.
 292        OpenSplitHorizontal,
 293        /// Toggles focus on the project panel.
 294        ToggleFocus,
 295        /// Toggles visibility of git-ignored files.
 296        ToggleHideGitIgnore,
 297        /// Starts a new search in the selected directory.
 298        NewSearchInDirectory,
 299        /// Unfolds the selected directory.
 300        UnfoldDirectory,
 301        /// Folds the selected directory.
 302        FoldDirectory,
 303        /// Scroll half a page upwards
 304        ScrollUp,
 305        /// Scroll half a page downwards
 306        ScrollDown,
 307        /// Scroll until the cursor displays at the center
 308        ScrollCursorCenter,
 309        /// Scroll until the cursor displays at the top
 310        ScrollCursorTop,
 311        /// Scroll until the cursor displays at the bottom
 312        ScrollCursorBottom,
 313        /// Selects the parent directory.
 314        SelectParent,
 315        /// Selects the next entry with git changes.
 316        SelectNextGitEntry,
 317        /// Selects the previous entry with git changes.
 318        SelectPrevGitEntry,
 319        /// Selects the next directory.
 320        SelectNextDirectory,
 321        /// Selects the previous directory.
 322        SelectPrevDirectory,
 323        /// Opens a diff view to compare two marked files.
 324        CompareMarkedFiles,
 325    ]
 326);
 327
 328#[derive(Clone, Debug, Default)]
 329struct FoldedAncestors {
 330    current_ancestor_depth: usize,
 331    ancestors: Vec<ProjectEntryId>,
 332}
 333
 334impl FoldedAncestors {
 335    fn max_ancestor_depth(&self) -> usize {
 336        self.ancestors.len()
 337    }
 338
 339    /// Note: This returns None for last item in ancestors list
 340    fn active_ancestor(&self) -> Option<ProjectEntryId> {
 341        if self.current_ancestor_depth == 0 {
 342            return None;
 343        }
 344        self.ancestors.get(self.current_ancestor_depth).copied()
 345    }
 346
 347    fn active_index(&self) -> usize {
 348        self.max_ancestor_depth()
 349            .saturating_sub(1)
 350            .saturating_sub(self.current_ancestor_depth)
 351    }
 352
 353    fn active_component(&self, file_name: &str) -> Option<String> {
 354        Path::new(file_name)
 355            .components()
 356            .nth(self.active_index())
 357            .map(|comp| comp.as_os_str().to_string_lossy().into_owned())
 358    }
 359}
 360
 361pub fn init_settings(cx: &mut App) {
 362    ProjectPanelSettings::register(cx);
 363}
 364
 365pub fn init(cx: &mut App) {
 366    init_settings(cx);
 367
 368    cx.observe_new(|workspace: &mut Workspace, _, _| {
 369        workspace.register_action(|workspace, _: &ToggleFocus, window, cx| {
 370            workspace.toggle_panel_focus::<ProjectPanel>(window, cx);
 371        });
 372
 373        workspace.register_action(|workspace, _: &ToggleHideGitIgnore, _, cx| {
 374            let fs = workspace.app_state().fs.clone();
 375            update_settings_file(fs, cx, move |setting, _| {
 376                setting.project_panel.get_or_insert_default().hide_gitignore = Some(
 377                    !setting
 378                        .project_panel
 379                        .get_or_insert_default()
 380                        .hide_gitignore
 381                        .unwrap_or(false),
 382                );
 383            })
 384        });
 385
 386        workspace.register_action(|workspace, action: &CollapseAllEntries, window, cx| {
 387            if let Some(panel) = workspace.panel::<ProjectPanel>(cx) {
 388                panel.update(cx, |panel, cx| {
 389                    panel.collapse_all_entries(action, window, cx);
 390                });
 391            }
 392        });
 393
 394        workspace.register_action(|workspace, action: &Rename, window, cx| {
 395            workspace.open_panel::<ProjectPanel>(window, cx);
 396            if let Some(panel) = workspace.panel::<ProjectPanel>(cx) {
 397                panel.update(cx, |panel, cx| {
 398                    if let Some(first_marked) = panel.marked_entries.first() {
 399                        let first_marked = *first_marked;
 400                        panel.marked_entries.clear();
 401                        panel.state.selection = Some(first_marked);
 402                    }
 403                    panel.rename(action, window, cx);
 404                });
 405            }
 406        });
 407
 408        workspace.register_action(|workspace, action: &Duplicate, window, cx| {
 409            workspace.open_panel::<ProjectPanel>(window, cx);
 410            if let Some(panel) = workspace.panel::<ProjectPanel>(cx) {
 411                panel.update(cx, |panel, cx| {
 412                    panel.duplicate(action, window, cx);
 413                });
 414            }
 415        });
 416
 417        workspace.register_action(|workspace, action: &Delete, window, cx| {
 418            if let Some(panel) = workspace.panel::<ProjectPanel>(cx) {
 419                panel.update(cx, |panel, cx| panel.delete(action, window, cx));
 420            }
 421        });
 422    })
 423    .detach();
 424}
 425
 426#[derive(Debug)]
 427pub enum Event {
 428    OpenedEntry {
 429        entry_id: ProjectEntryId,
 430        focus_opened_item: bool,
 431        allow_preview: bool,
 432    },
 433    SplitEntry {
 434        entry_id: ProjectEntryId,
 435        allow_preview: bool,
 436        split_direction: Option<SplitDirection>,
 437    },
 438    Focus,
 439}
 440
 441#[derive(Serialize, Deserialize)]
 442struct SerializedProjectPanel {
 443    width: Option<Pixels>,
 444}
 445
 446struct DraggedProjectEntryView {
 447    selection: SelectedEntry,
 448    icon: Option<SharedString>,
 449    filename: String,
 450    click_offset: Point<Pixels>,
 451    selections: Arc<[SelectedEntry]>,
 452}
 453
 454struct ItemColors {
 455    default: Hsla,
 456    hover: Hsla,
 457    drag_over: Hsla,
 458    marked: Hsla,
 459    focused: Hsla,
 460}
 461
 462fn get_item_color(is_sticky: bool, cx: &App) -> ItemColors {
 463    let colors = cx.theme().colors();
 464
 465    ItemColors {
 466        default: if is_sticky {
 467            colors.panel_overlay_background
 468        } else {
 469            colors.panel_background
 470        },
 471        hover: if is_sticky {
 472            colors.panel_overlay_hover
 473        } else {
 474            colors.element_hover
 475        },
 476        marked: colors.element_selected,
 477        focused: colors.panel_focused_border,
 478        drag_over: colors.drop_target_background,
 479    }
 480}
 481
 482impl ProjectPanel {
 483    fn new(
 484        workspace: &mut Workspace,
 485        window: &mut Window,
 486        cx: &mut Context<Workspace>,
 487    ) -> Entity<Self> {
 488        let project = workspace.project().clone();
 489        let git_store = project.read(cx).git_store().clone();
 490        let path_style = project.read(cx).path_style(cx);
 491        let project_panel = cx.new(|cx| {
 492            let focus_handle = cx.focus_handle();
 493            cx.on_focus(&focus_handle, window, Self::focus_in).detach();
 494
 495            cx.subscribe_in(
 496                &git_store,
 497                window,
 498                |this, _, event, window, cx| match event {
 499                    GitStoreEvent::RepositoryUpdated(
 500                        _,
 501                        RepositoryEvent::StatusesChanged { full_scan: _ },
 502                        _,
 503                    )
 504                    | GitStoreEvent::RepositoryAdded
 505                    | GitStoreEvent::RepositoryRemoved(_) => {
 506                        this.update_visible_entries(None, false, false, window, cx);
 507                        cx.notify();
 508                    }
 509                    _ => {}
 510                },
 511            )
 512            .detach();
 513
 514            cx.subscribe_in(
 515                &project,
 516                window,
 517                |this, project, event, window, cx| match event {
 518                    project::Event::ActiveEntryChanged(Some(entry_id)) => {
 519                        if ProjectPanelSettings::get_global(cx).auto_reveal_entries {
 520                            this.reveal_entry(project.clone(), *entry_id, true, window, cx)
 521                                .ok();
 522                        }
 523                    }
 524                    project::Event::ActiveEntryChanged(None) => {
 525                        let is_active_item_file_diff_view = this
 526                            .workspace
 527                            .upgrade()
 528                            .and_then(|ws| ws.read(cx).active_item(cx))
 529                            .map(|item| {
 530                                item.act_as_type(TypeId::of::<FileDiffView>(), cx).is_some()
 531                            })
 532                            .unwrap_or(false);
 533                        if !is_active_item_file_diff_view {
 534                            this.marked_entries.clear();
 535                        }
 536                    }
 537                    project::Event::RevealInProjectPanel(entry_id) => {
 538                        if let Some(()) = this
 539                            .reveal_entry(project.clone(), *entry_id, false, window, cx)
 540                            .log_err()
 541                        {
 542                            cx.emit(PanelEvent::Activate);
 543                        }
 544                    }
 545                    project::Event::ActivateProjectPanel => {
 546                        cx.emit(PanelEvent::Activate);
 547                    }
 548                    project::Event::DiskBasedDiagnosticsFinished { .. }
 549                    | project::Event::DiagnosticsUpdated { .. } => {
 550                        if ProjectPanelSettings::get_global(cx).show_diagnostics
 551                            != ShowDiagnostics::Off
 552                        {
 553                            this.diagnostic_summary_update = cx.spawn(async move |this, cx| {
 554                                cx.background_executor()
 555                                    .timer(Duration::from_millis(30))
 556                                    .await;
 557                                this.update(cx, |this, cx| {
 558                                    this.update_diagnostics(cx);
 559                                    cx.notify();
 560                                })
 561                                .log_err();
 562                            });
 563                        }
 564                    }
 565                    project::Event::WorktreeRemoved(id) => {
 566                        this.state.expanded_dir_ids.remove(id);
 567                        this.update_visible_entries(None, false, false, window, cx);
 568                        cx.notify();
 569                    }
 570                    project::Event::WorktreeUpdatedEntries(_, _)
 571                    | project::Event::WorktreeAdded(_)
 572                    | project::Event::WorktreeOrderChanged => {
 573                        this.update_visible_entries(None, false, false, window, cx);
 574                        cx.notify();
 575                    }
 576                    project::Event::ExpandedAllForEntry(worktree_id, entry_id) => {
 577                        if let Some((worktree, expanded_dir_ids)) = project
 578                            .read(cx)
 579                            .worktree_for_id(*worktree_id, cx)
 580                            .zip(this.state.expanded_dir_ids.get_mut(worktree_id))
 581                        {
 582                            let worktree = worktree.read(cx);
 583
 584                            let Some(entry) = worktree.entry_for_id(*entry_id) else {
 585                                return;
 586                            };
 587                            let include_ignored_dirs = !entry.is_ignored;
 588
 589                            let mut dirs_to_expand = vec![*entry_id];
 590                            while let Some(current_id) = dirs_to_expand.pop() {
 591                                let Some(current_entry) = worktree.entry_for_id(current_id) else {
 592                                    continue;
 593                                };
 594                                for child in worktree.child_entries(¤t_entry.path) {
 595                                    if !child.is_dir() || (include_ignored_dirs && child.is_ignored)
 596                                    {
 597                                        continue;
 598                                    }
 599
 600                                    dirs_to_expand.push(child.id);
 601
 602                                    if let Err(ix) = expanded_dir_ids.binary_search(&child.id) {
 603                                        expanded_dir_ids.insert(ix, child.id);
 604                                    }
 605                                    this.state.unfolded_dir_ids.insert(child.id);
 606                                }
 607                            }
 608                            this.update_visible_entries(None, false, false, window, cx);
 609                            cx.notify();
 610                        }
 611                    }
 612                    _ => {}
 613                },
 614            )
 615            .detach();
 616
 617            let trash_action = [TypeId::of::<Trash>()];
 618            let is_remote = project.read(cx).is_remote();
 619
 620            // Make sure the trash option is never displayed anywhere on remote
 621            // hosts since they may not support trashing. May want to dynamically
 622            // detect this in the future.
 623            if is_remote {
 624                CommandPaletteFilter::update_global(cx, |filter, _cx| {
 625                    filter.hide_action_types(&trash_action);
 626                });
 627            }
 628
 629            let filename_editor = cx.new(|cx| Editor::single_line(window, cx));
 630
 631            cx.subscribe_in(
 632                &filename_editor,
 633                window,
 634                |project_panel, _, editor_event, window, cx| match editor_event {
 635                    EditorEvent::BufferEdited => {
 636                        project_panel.populate_validation_error(cx);
 637                        project_panel.autoscroll(cx);
 638                    }
 639                    EditorEvent::SelectionsChanged { .. } => {
 640                        project_panel.autoscroll(cx);
 641                    }
 642                    EditorEvent::Blurred => {
 643                        if project_panel
 644                            .state
 645                            .edit_state
 646                            .as_ref()
 647                            .is_some_and(|state| state.processing_filename.is_none())
 648                        {
 649                            match project_panel.confirm_edit(false, window, cx) {
 650                                Some(task) => {
 651                                    task.detach_and_notify_err(window, cx);
 652                                }
 653                                None => {
 654                                    project_panel.state.edit_state = None;
 655                                    project_panel
 656                                        .update_visible_entries(None, false, false, window, cx);
 657                                    cx.notify();
 658                                }
 659                            }
 660                        }
 661                    }
 662                    _ => {}
 663                },
 664            )
 665            .detach();
 666
 667            cx.observe_global::<FileIcons>(|_, cx| {
 668                cx.notify();
 669            })
 670            .detach();
 671
 672            let mut project_panel_settings = *ProjectPanelSettings::get_global(cx);
 673            cx.observe_global_in::<SettingsStore>(window, move |this, window, cx| {
 674                let new_settings = *ProjectPanelSettings::get_global(cx);
 675                if project_panel_settings != new_settings {
 676                    if project_panel_settings.hide_gitignore != new_settings.hide_gitignore {
 677                        this.update_visible_entries(None, false, false, window, cx);
 678                    }
 679                    if project_panel_settings.hide_root != new_settings.hide_root {
 680                        this.update_visible_entries(None, false, false, window, cx);
 681                    }
 682                    if project_panel_settings.hide_hidden != new_settings.hide_hidden {
 683                        this.update_visible_entries(None, false, false, window, cx);
 684                    }
 685                    if project_panel_settings.sticky_scroll && !new_settings.sticky_scroll {
 686                        this.sticky_items_count = 0;
 687                    }
 688                    project_panel_settings = new_settings;
 689                    this.update_diagnostics(cx);
 690                    cx.notify();
 691                }
 692            })
 693            .detach();
 694
 695            let scroll_handle = UniformListScrollHandle::new();
 696            let mut this = Self {
 697                project: project.clone(),
 698                hover_scroll_task: None,
 699                fs: workspace.app_state().fs.clone(),
 700                focus_handle,
 701                rendered_entries_len: 0,
 702                folded_directory_drag_target: None,
 703                drag_target_entry: None,
 704
 705                marked_entries: Default::default(),
 706                context_menu: None,
 707                filename_editor,
 708                clipboard: None,
 709                _dragged_entry_destination: None,
 710                workspace: workspace.weak_handle(),
 711                width: None,
 712                pending_serialization: Task::ready(None),
 713                diagnostics: Default::default(),
 714                diagnostic_summary_update: Task::ready(()),
 715                scroll_handle,
 716                mouse_down: false,
 717                hover_expand_task: None,
 718                previous_drag_position: None,
 719                sticky_items_count: 0,
 720                last_reported_update: Instant::now(),
 721                state: State {
 722                    max_width_item_index: None,
 723                    edit_state: None,
 724                    selection: None,
 725                    last_worktree_root_id: Default::default(),
 726                    visible_entries: Default::default(),
 727                    ancestors: Default::default(),
 728                    expanded_dir_ids: Default::default(),
 729                    unfolded_dir_ids: Default::default(),
 730                },
 731                update_visible_entries_task: Task::ready(()),
 732            };
 733            this.update_visible_entries(None, false, false, window, cx);
 734
 735            this
 736        });
 737
 738        cx.subscribe_in(&project_panel, window, {
 739            let project_panel = project_panel.downgrade();
 740            move |workspace, _, event, window, cx| match event {
 741                &Event::OpenedEntry {
 742                    entry_id,
 743                    focus_opened_item,
 744                    allow_preview,
 745                } => {
 746                    if let Some(worktree) = project.read(cx).worktree_for_entry(entry_id, cx)
 747                        && let Some(entry) = worktree.read(cx).entry_for_id(entry_id) {
 748                            let file_path = entry.path.clone();
 749                            let worktree_id = worktree.read(cx).id();
 750                            let entry_id = entry.id;
 751                            let is_via_ssh = project.read(cx).is_via_remote_server();
 752
 753                            workspace
 754                                .open_path_preview(
 755                                    ProjectPath {
 756                                        worktree_id,
 757                                        path: file_path.clone(),
 758                                    },
 759                                    None,
 760                                    focus_opened_item,
 761                                    allow_preview,
 762                                    true,
 763                                    window, cx,
 764                                )
 765                                .detach_and_prompt_err("Failed to open file", window, cx, move |e, _, _| {
 766                                    match e.error_code() {
 767                                        ErrorCode::Disconnected => if is_via_ssh {
 768                                            Some("Disconnected from SSH host".to_string())
 769                                        } else {
 770                                            Some("Disconnected from remote project".to_string())
 771                                        },
 772                                        ErrorCode::UnsharedItem => Some(format!(
 773                                            "{} is not shared by the host. This could be because it has been marked as `private`",
 774                                            file_path.display(path_style)
 775                                        )),
 776                                        // See note in worktree.rs where this error originates. Returning Some in this case prevents
 777                                        // the error popup from saying "Try Again", which is a red herring in this case
 778                                        ErrorCode::Internal if e.to_string().contains("File is too large to load") => Some(e.to_string()),
 779                                        _ => None,
 780                                    }
 781                                });
 782
 783                            if let Some(project_panel) = project_panel.upgrade() {
 784                                // Always select and mark the entry, regardless of whether it is opened or not.
 785                                project_panel.update(cx, |project_panel, _| {
 786                                    let entry = SelectedEntry { worktree_id, entry_id };
 787                                    project_panel.marked_entries.clear();
 788                                    project_panel.marked_entries.push(entry);
 789                                    project_panel.state.selection = Some(entry);
 790                                });
 791                                if !focus_opened_item {
 792                                    let focus_handle = project_panel.read(cx).focus_handle.clone();
 793                                    window.focus(&focus_handle);
 794                                }
 795                            }
 796                        }
 797                }
 798                &Event::SplitEntry {
 799                    entry_id,
 800                    allow_preview,
 801                    split_direction,
 802                } => {
 803                    if let Some(worktree) = project.read(cx).worktree_for_entry(entry_id, cx)
 804                        && let Some(entry) = worktree.read(cx).entry_for_id(entry_id) {
 805                            workspace
 806                                .split_path_preview(
 807                                    ProjectPath {
 808                                        worktree_id: worktree.read(cx).id(),
 809                                        path: entry.path.clone(),
 810                                    },
 811                                    allow_preview,
 812                                    split_direction,
 813                                    window, cx,
 814                                )
 815                                .detach_and_log_err(cx);
 816                        }
 817                }
 818
 819                _ => {}
 820            }
 821        })
 822        .detach();
 823
 824        project_panel
 825    }
 826
 827    pub async fn load(
 828        workspace: WeakEntity<Workspace>,
 829        mut cx: AsyncWindowContext,
 830    ) -> Result<Entity<Self>> {
 831        let serialized_panel = match workspace
 832            .read_with(&cx, |workspace, _| {
 833                ProjectPanel::serialization_key(workspace)
 834            })
 835            .ok()
 836            .flatten()
 837        {
 838            Some(serialization_key) => cx
 839                .background_spawn(async move { KEY_VALUE_STORE.read_kvp(&serialization_key) })
 840                .await
 841                .context("loading project panel")
 842                .log_err()
 843                .flatten()
 844                .map(|panel| serde_json::from_str::<SerializedProjectPanel>(&panel))
 845                .transpose()
 846                .log_err()
 847                .flatten(),
 848            None => None,
 849        };
 850
 851        workspace.update_in(&mut cx, |workspace, window, cx| {
 852            let panel = ProjectPanel::new(workspace, window, cx);
 853            if let Some(serialized_panel) = serialized_panel {
 854                panel.update(cx, |panel, cx| {
 855                    panel.width = serialized_panel.width.map(|px| px.round());
 856                    cx.notify();
 857                });
 858            }
 859            panel
 860        })
 861    }
 862
 863    fn update_diagnostics(&mut self, cx: &mut Context<Self>) {
 864        let mut diagnostics: HashMap<(WorktreeId, Arc<RelPath>), DiagnosticSeverity> =
 865            Default::default();
 866        let show_diagnostics_setting = ProjectPanelSettings::get_global(cx).show_diagnostics;
 867
 868        if show_diagnostics_setting != ShowDiagnostics::Off {
 869            self.project
 870                .read(cx)
 871                .diagnostic_summaries(false, cx)
 872                .filter_map(|(path, _, diagnostic_summary)| {
 873                    if diagnostic_summary.error_count > 0 {
 874                        Some((path, DiagnosticSeverity::ERROR))
 875                    } else if show_diagnostics_setting == ShowDiagnostics::All
 876                        && diagnostic_summary.warning_count > 0
 877                    {
 878                        Some((path, DiagnosticSeverity::WARNING))
 879                    } else {
 880                        None
 881                    }
 882                })
 883                .for_each(|(project_path, diagnostic_severity)| {
 884                    let ancestors = project_path.path.ancestors().collect::<Vec<_>>();
 885                    for path in ancestors.into_iter().rev() {
 886                        Self::update_strongest_diagnostic_severity(
 887                            &mut diagnostics,
 888                            &project_path,
 889                            path.into(),
 890                            diagnostic_severity,
 891                        );
 892                    }
 893                });
 894        }
 895        self.diagnostics = diagnostics;
 896    }
 897
 898    fn update_strongest_diagnostic_severity(
 899        diagnostics: &mut HashMap<(WorktreeId, Arc<RelPath>), DiagnosticSeverity>,
 900        project_path: &ProjectPath,
 901        path_buffer: Arc<RelPath>,
 902        diagnostic_severity: DiagnosticSeverity,
 903    ) {
 904        diagnostics
 905            .entry((project_path.worktree_id, path_buffer))
 906            .and_modify(|strongest_diagnostic_severity| {
 907                *strongest_diagnostic_severity =
 908                    cmp::min(*strongest_diagnostic_severity, diagnostic_severity);
 909            })
 910            .or_insert(diagnostic_severity);
 911    }
 912
 913    fn serialization_key(workspace: &Workspace) -> Option<String> {
 914        workspace
 915            .database_id()
 916            .map(|id| i64::from(id).to_string())
 917            .or(workspace.session_id())
 918            .map(|id| format!("{}-{:?}", PROJECT_PANEL_KEY, id))
 919    }
 920
 921    fn serialize(&mut self, cx: &mut Context<Self>) {
 922        let Some(serialization_key) = self
 923            .workspace
 924            .read_with(cx, |workspace, _| {
 925                ProjectPanel::serialization_key(workspace)
 926            })
 927            .ok()
 928            .flatten()
 929        else {
 930            return;
 931        };
 932        let width = self.width;
 933        self.pending_serialization = cx.background_spawn(
 934            async move {
 935                KEY_VALUE_STORE
 936                    .write_kvp(
 937                        serialization_key,
 938                        serde_json::to_string(&SerializedProjectPanel { width })?,
 939                    )
 940                    .await?;
 941                anyhow::Ok(())
 942            }
 943            .log_err(),
 944        );
 945    }
 946
 947    fn focus_in(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 948        if !self.focus_handle.contains_focused(window, cx) {
 949            cx.emit(Event::Focus);
 950        }
 951    }
 952
 953    fn deploy_context_menu(
 954        &mut self,
 955        position: Point<Pixels>,
 956        entry_id: ProjectEntryId,
 957        window: &mut Window,
 958        cx: &mut Context<Self>,
 959    ) {
 960        let project = self.project.read(cx);
 961
 962        let worktree_id = if let Some(id) = project.worktree_id_for_entry(entry_id, cx) {
 963            id
 964        } else {
 965            return;
 966        };
 967
 968        self.state.selection = Some(SelectedEntry {
 969            worktree_id,
 970            entry_id,
 971        });
 972
 973        if let Some((worktree, entry)) = self.selected_sub_entry(cx) {
 974            let auto_fold_dirs = ProjectPanelSettings::get_global(cx).auto_fold_dirs;
 975            let worktree = worktree.read(cx);
 976            let is_root = Some(entry) == worktree.root_entry();
 977            let is_dir = entry.is_dir();
 978            let is_foldable = auto_fold_dirs && self.is_foldable(entry, worktree);
 979            let is_unfoldable = auto_fold_dirs && self.is_unfoldable(entry, worktree);
 980            let is_read_only = project.is_read_only(cx);
 981            let is_remote = project.is_remote();
 982            let is_local = project.is_local();
 983
 984            let settings = ProjectPanelSettings::get_global(cx);
 985            let visible_worktrees_count = project.visible_worktrees(cx).count();
 986            let should_hide_rename = is_root
 987                && (cfg!(target_os = "windows")
 988                    || (settings.hide_root && visible_worktrees_count == 1));
 989            let should_show_compare = !is_dir && self.file_abs_paths_to_diff(cx).is_some();
 990
 991            let context_menu = ContextMenu::build(window, cx, |menu, _, _| {
 992                menu.context(self.focus_handle.clone()).map(|menu| {
 993                    if is_read_only {
 994                        menu.when(is_dir, |menu| {
 995                            menu.action("Search Inside", Box::new(NewSearchInDirectory))
 996                        })
 997                    } else {
 998                        menu.action("New File", Box::new(NewFile))
 999                            .action("New Folder", Box::new(NewDirectory))
1000                            .separator()
1001                            .when(is_local && cfg!(target_os = "macos"), |menu| {
1002                                menu.action("Reveal in Finder", Box::new(RevealInFileManager))
1003                            })
1004                            .when(is_local && cfg!(not(target_os = "macos")), |menu| {
1005                                menu.action("Reveal in File Manager", Box::new(RevealInFileManager))
1006                            })
1007                            .when(is_local, |menu| {
1008                                menu.action("Open in Default App", Box::new(OpenWithSystem))
1009                            })
1010                            .action("Open in Terminal", Box::new(OpenInTerminal))
1011                            .when(is_dir, |menu| {
1012                                menu.separator()
1013                                    .action("Find in Folder…", Box::new(NewSearchInDirectory))
1014                            })
1015                            .when(is_unfoldable, |menu| {
1016                                menu.action("Unfold Directory", Box::new(UnfoldDirectory))
1017                            })
1018                            .when(is_foldable, |menu| {
1019                                menu.action("Fold Directory", Box::new(FoldDirectory))
1020                            })
1021                            .when(should_show_compare, |menu| {
1022                                menu.separator()
1023                                    .action("Compare marked files", Box::new(CompareMarkedFiles))
1024                            })
1025                            .separator()
1026                            .action("Cut", Box::new(Cut))
1027                            .action("Copy", Box::new(Copy))
1028                            .action("Duplicate", Box::new(Duplicate))
1029                            // TODO: Paste should always be visible, cbut disabled when clipboard is empty
1030                            .action_disabled_when(
1031                                self.clipboard.as_ref().is_none(),
1032                                "Paste",
1033                                Box::new(Paste),
1034                            )
1035                            .separator()
1036                            .action("Copy Path", Box::new(zed_actions::workspace::CopyPath))
1037                            .action(
1038                                "Copy Relative Path",
1039                                Box::new(zed_actions::workspace::CopyRelativePath),
1040                            )
1041                            .when(!should_hide_rename, |menu| {
1042                                menu.separator().action("Rename", Box::new(Rename))
1043                            })
1044                            .when(!is_root && !is_remote, |menu| {
1045                                menu.action("Trash", Box::new(Trash { skip_prompt: false }))
1046                            })
1047                            .when(!is_root, |menu| {
1048                                menu.action("Delete", Box::new(Delete { skip_prompt: false }))
1049                            })
1050                            .when(!is_remote && is_root, |menu| {
1051                                menu.separator()
1052                                    .action(
1053                                        "Add Folder to Project…",
1054                                        Box::new(workspace::AddFolderToProject),
1055                                    )
1056                                    .action("Remove from Project", Box::new(RemoveFromProject))
1057                            })
1058                            .when(is_root, |menu| {
1059                                menu.separator()
1060                                    .action("Collapse All", Box::new(CollapseAllEntries))
1061                            })
1062                    }
1063                })
1064            });
1065
1066            window.focus(&context_menu.focus_handle(cx));
1067            let subscription = cx.subscribe(&context_menu, |this, _, _: &DismissEvent, cx| {
1068                this.context_menu.take();
1069                cx.notify();
1070            });
1071            self.context_menu = Some((context_menu, position, subscription));
1072        }
1073
1074        cx.notify();
1075    }
1076
1077    fn is_unfoldable(&self, entry: &Entry, worktree: &Worktree) -> bool {
1078        if !entry.is_dir() || self.state.unfolded_dir_ids.contains(&entry.id) {
1079            return false;
1080        }
1081
1082        if let Some(parent_path) = entry.path.parent() {
1083            let snapshot = worktree.snapshot();
1084            let mut child_entries = snapshot.child_entries(parent_path);
1085            if let Some(child) = child_entries.next()
1086                && child_entries.next().is_none()
1087            {
1088                return child.kind.is_dir();
1089            }
1090        };
1091        false
1092    }
1093
1094    fn is_foldable(&self, entry: &Entry, worktree: &Worktree) -> bool {
1095        if entry.is_dir() {
1096            let snapshot = worktree.snapshot();
1097
1098            let mut child_entries = snapshot.child_entries(&entry.path);
1099            if let Some(child) = child_entries.next()
1100                && child_entries.next().is_none()
1101            {
1102                return child.kind.is_dir();
1103            }
1104        }
1105        false
1106    }
1107
1108    fn expand_selected_entry(
1109        &mut self,
1110        _: &ExpandSelectedEntry,
1111        window: &mut Window,
1112        cx: &mut Context<Self>,
1113    ) {
1114        if let Some((worktree, entry)) = self.selected_entry(cx) {
1115            if let Some(folded_ancestors) = self.state.ancestors.get_mut(&entry.id)
1116                && folded_ancestors.current_ancestor_depth > 0
1117            {
1118                folded_ancestors.current_ancestor_depth -= 1;
1119                cx.notify();
1120                return;
1121            }
1122            if entry.is_dir() {
1123                let worktree_id = worktree.id();
1124                let entry_id = entry.id;
1125                let expanded_dir_ids = if let Some(expanded_dir_ids) =
1126                    self.state.expanded_dir_ids.get_mut(&worktree_id)
1127                {
1128                    expanded_dir_ids
1129                } else {
1130                    return;
1131                };
1132
1133                match expanded_dir_ids.binary_search(&entry_id) {
1134                    Ok(_) => self.select_next(&SelectNext, window, cx),
1135                    Err(ix) => {
1136                        self.project.update(cx, |project, cx| {
1137                            project.expand_entry(worktree_id, entry_id, cx);
1138                        });
1139
1140                        expanded_dir_ids.insert(ix, entry_id);
1141                        self.update_visible_entries(None, false, false, window, cx);
1142                        cx.notify();
1143                    }
1144                }
1145            }
1146        }
1147    }
1148
1149    fn collapse_selected_entry(
1150        &mut self,
1151        _: &CollapseSelectedEntry,
1152        window: &mut Window,
1153        cx: &mut Context<Self>,
1154    ) {
1155        let Some((worktree, entry)) = self.selected_entry_handle(cx) else {
1156            return;
1157        };
1158        self.collapse_entry(entry.clone(), worktree, window, cx)
1159    }
1160
1161    fn collapse_entry(
1162        &mut self,
1163        entry: Entry,
1164        worktree: Entity<Worktree>,
1165        window: &mut Window,
1166        cx: &mut Context<Self>,
1167    ) {
1168        let worktree = worktree.read(cx);
1169        if let Some(folded_ancestors) = self.state.ancestors.get_mut(&entry.id)
1170            && folded_ancestors.current_ancestor_depth + 1 < folded_ancestors.max_ancestor_depth()
1171        {
1172            folded_ancestors.current_ancestor_depth += 1;
1173            cx.notify();
1174            return;
1175        }
1176        let worktree_id = worktree.id();
1177        let expanded_dir_ids =
1178            if let Some(expanded_dir_ids) = self.state.expanded_dir_ids.get_mut(&worktree_id) {
1179                expanded_dir_ids
1180            } else {
1181                return;
1182            };
1183
1184        let mut entry = &entry;
1185        loop {
1186            let entry_id = entry.id;
1187            match expanded_dir_ids.binary_search(&entry_id) {
1188                Ok(ix) => {
1189                    expanded_dir_ids.remove(ix);
1190                    self.update_visible_entries(
1191                        Some((worktree_id, entry_id)),
1192                        false,
1193                        false,
1194                        window,
1195                        cx,
1196                    );
1197                    cx.notify();
1198                    break;
1199                }
1200                Err(_) => {
1201                    if let Some(parent_entry) =
1202                        entry.path.parent().and_then(|p| worktree.entry_for_path(p))
1203                    {
1204                        entry = parent_entry;
1205                    } else {
1206                        break;
1207                    }
1208                }
1209            }
1210        }
1211    }
1212
1213    pub fn collapse_all_entries(
1214        &mut self,
1215        _: &CollapseAllEntries,
1216        window: &mut Window,
1217        cx: &mut Context<Self>,
1218    ) {
1219        // By keeping entries for fully collapsed worktrees, we avoid expanding them within update_visible_entries
1220        // (which is it's default behavior when there's no entry for a worktree in expanded_dir_ids).
1221        let multiple_worktrees = self.project.read(cx).worktrees(cx).count() > 1;
1222        let project = self.project.read(cx);
1223
1224        self.state
1225            .expanded_dir_ids
1226            .iter_mut()
1227            .for_each(|(worktree_id, expanded_entries)| {
1228                if multiple_worktrees {
1229                    *expanded_entries = Default::default();
1230                    return;
1231                }
1232
1233                let root_entry_id = project
1234                    .worktree_for_id(*worktree_id, cx)
1235                    .map(|worktree| worktree.read(cx).snapshot())
1236                    .and_then(|worktree_snapshot| {
1237                        worktree_snapshot.root_entry().map(|entry| entry.id)
1238                    });
1239
1240                match root_entry_id {
1241                    Some(id) => {
1242                        expanded_entries.retain(|entry_id| entry_id == &id);
1243                    }
1244                    None => *expanded_entries = Default::default(),
1245                };
1246            });
1247
1248        self.update_visible_entries(None, false, false, window, cx);
1249        cx.notify();
1250    }
1251
1252    fn toggle_expanded(
1253        &mut self,
1254        entry_id: ProjectEntryId,
1255        window: &mut Window,
1256        cx: &mut Context<Self>,
1257    ) {
1258        if let Some(worktree_id) = self.project.read(cx).worktree_id_for_entry(entry_id, cx)
1259            && let Some(expanded_dir_ids) = self.state.expanded_dir_ids.get_mut(&worktree_id)
1260        {
1261            self.project.update(cx, |project, cx| {
1262                match expanded_dir_ids.binary_search(&entry_id) {
1263                    Ok(ix) => {
1264                        expanded_dir_ids.remove(ix);
1265                    }
1266                    Err(ix) => {
1267                        project.expand_entry(worktree_id, entry_id, cx);
1268                        expanded_dir_ids.insert(ix, entry_id);
1269                    }
1270                }
1271            });
1272            self.update_visible_entries(Some((worktree_id, entry_id)), false, false, window, cx);
1273            window.focus(&self.focus_handle);
1274            cx.notify();
1275        }
1276    }
1277
1278    fn toggle_expand_all(
1279        &mut self,
1280        entry_id: ProjectEntryId,
1281        window: &mut Window,
1282        cx: &mut Context<Self>,
1283    ) {
1284        if let Some(worktree_id) = self.project.read(cx).worktree_id_for_entry(entry_id, cx)
1285            && let Some(expanded_dir_ids) = self.state.expanded_dir_ids.get_mut(&worktree_id)
1286        {
1287            match expanded_dir_ids.binary_search(&entry_id) {
1288                Ok(_ix) => {
1289                    self.collapse_all_for_entry(worktree_id, entry_id, cx);
1290                }
1291                Err(_ix) => {
1292                    self.expand_all_for_entry(worktree_id, entry_id, cx);
1293                }
1294            }
1295            self.update_visible_entries(Some((worktree_id, entry_id)), false, false, window, cx);
1296            window.focus(&self.focus_handle);
1297            cx.notify();
1298        }
1299    }
1300
1301    fn expand_all_for_entry(
1302        &mut self,
1303        worktree_id: WorktreeId,
1304        entry_id: ProjectEntryId,
1305        cx: &mut Context<Self>,
1306    ) {
1307        self.project.update(cx, |project, cx| {
1308            if let Some((worktree, expanded_dir_ids)) = project
1309                .worktree_for_id(worktree_id, cx)
1310                .zip(self.state.expanded_dir_ids.get_mut(&worktree_id))
1311            {
1312                if let Some(task) = project.expand_all_for_entry(worktree_id, entry_id, cx) {
1313                    task.detach();
1314                }
1315
1316                let worktree = worktree.read(cx);
1317
1318                if let Some(mut entry) = worktree.entry_for_id(entry_id) {
1319                    loop {
1320                        if let Err(ix) = expanded_dir_ids.binary_search(&entry.id) {
1321                            expanded_dir_ids.insert(ix, entry.id);
1322                        }
1323
1324                        if let Some(parent_entry) =
1325                            entry.path.parent().and_then(|p| worktree.entry_for_path(p))
1326                        {
1327                            entry = parent_entry;
1328                        } else {
1329                            break;
1330                        }
1331                    }
1332                }
1333            }
1334        });
1335    }
1336
1337    fn collapse_all_for_entry(
1338        &mut self,
1339        worktree_id: WorktreeId,
1340        entry_id: ProjectEntryId,
1341        cx: &mut Context<Self>,
1342    ) {
1343        self.project.update(cx, |project, cx| {
1344            if let Some((worktree, expanded_dir_ids)) = project
1345                .worktree_for_id(worktree_id, cx)
1346                .zip(self.state.expanded_dir_ids.get_mut(&worktree_id))
1347            {
1348                let worktree = worktree.read(cx);
1349                let mut dirs_to_collapse = vec![entry_id];
1350                let auto_fold_enabled = ProjectPanelSettings::get_global(cx).auto_fold_dirs;
1351                while let Some(current_id) = dirs_to_collapse.pop() {
1352                    let Some(current_entry) = worktree.entry_for_id(current_id) else {
1353                        continue;
1354                    };
1355                    if let Ok(ix) = expanded_dir_ids.binary_search(¤t_id) {
1356                        expanded_dir_ids.remove(ix);
1357                    }
1358                    if auto_fold_enabled {
1359                        self.state.unfolded_dir_ids.remove(¤t_id);
1360                    }
1361                    for child in worktree.child_entries(¤t_entry.path) {
1362                        if child.is_dir() {
1363                            dirs_to_collapse.push(child.id);
1364                        }
1365                    }
1366                }
1367            }
1368        });
1369    }
1370
1371    fn select_previous(&mut self, _: &SelectPrevious, window: &mut Window, cx: &mut Context<Self>) {
1372        if let Some(edit_state) = &self.state.edit_state
1373            && edit_state.processing_filename.is_none()
1374        {
1375            self.filename_editor.update(cx, |editor, cx| {
1376                editor.move_to_beginning_of_line(
1377                    &editor::actions::MoveToBeginningOfLine {
1378                        stop_at_soft_wraps: false,
1379                        stop_at_indent: false,
1380                    },
1381                    window,
1382                    cx,
1383                );
1384            });
1385            return;
1386        }
1387        if let Some(selection) = self.state.selection {
1388            let (mut worktree_ix, mut entry_ix, _) =
1389                self.index_for_selection(selection).unwrap_or_default();
1390            if entry_ix > 0 {
1391                entry_ix -= 1;
1392            } else if worktree_ix > 0 {
1393                worktree_ix -= 1;
1394                entry_ix = self.state.visible_entries[worktree_ix].entries.len() - 1;
1395            } else {
1396                return;
1397            }
1398
1399            let VisibleEntriesForWorktree {
1400                worktree_id,
1401                entries,
1402                ..
1403            } = &self.state.visible_entries[worktree_ix];
1404            let selection = SelectedEntry {
1405                worktree_id: *worktree_id,
1406                entry_id: entries[entry_ix].id,
1407            };
1408            self.state.selection = Some(selection);
1409            if window.modifiers().shift {
1410                self.marked_entries.push(selection);
1411            }
1412            self.autoscroll(cx);
1413            cx.notify();
1414        } else {
1415            self.select_first(&SelectFirst {}, window, cx);
1416        }
1417    }
1418
1419    fn confirm(&mut self, _: &Confirm, window: &mut Window, cx: &mut Context<Self>) {
1420        if let Some(task) = self.confirm_edit(true, window, cx) {
1421            task.detach_and_notify_err(window, cx);
1422        }
1423    }
1424
1425    fn open(&mut self, _: &Open, window: &mut Window, cx: &mut Context<Self>) {
1426        let preview_tabs_enabled = PreviewTabsSettings::get_global(cx).enabled;
1427        self.open_internal(true, !preview_tabs_enabled, None, window, cx);
1428    }
1429
1430    fn open_permanent(&mut self, _: &OpenPermanent, window: &mut Window, cx: &mut Context<Self>) {
1431        self.open_internal(false, true, None, window, cx);
1432    }
1433
1434    fn open_split_vertical(
1435        &mut self,
1436        _: &OpenSplitVertical,
1437        window: &mut Window,
1438        cx: &mut Context<Self>,
1439    ) {
1440        self.open_internal(false, true, Some(SplitDirection::vertical(cx)), window, cx);
1441    }
1442
1443    fn open_split_horizontal(
1444        &mut self,
1445        _: &OpenSplitHorizontal,
1446        window: &mut Window,
1447        cx: &mut Context<Self>,
1448    ) {
1449        self.open_internal(
1450            false,
1451            true,
1452            Some(SplitDirection::horizontal(cx)),
1453            window,
1454            cx,
1455        );
1456    }
1457
1458    fn open_internal(
1459        &mut self,
1460        allow_preview: bool,
1461        focus_opened_item: bool,
1462        split_direction: Option<SplitDirection>,
1463        window: &mut Window,
1464        cx: &mut Context<Self>,
1465    ) {
1466        if let Some((_, entry)) = self.selected_entry(cx) {
1467            if entry.is_file() {
1468                if split_direction.is_some() {
1469                    self.split_entry(entry.id, allow_preview, split_direction, cx);
1470                } else {
1471                    self.open_entry(entry.id, focus_opened_item, allow_preview, cx);
1472                }
1473                cx.notify();
1474            } else {
1475                self.toggle_expanded(entry.id, window, cx);
1476            }
1477        }
1478    }
1479
1480    fn populate_validation_error(&mut self, cx: &mut Context<Self>) {
1481        let edit_state = match self.state.edit_state.as_mut() {
1482            Some(state) => state,
1483            None => return,
1484        };
1485        let filename = self.filename_editor.read(cx).text(cx);
1486        if !filename.is_empty() {
1487            if filename.is_empty() {
1488                edit_state.validation_state =
1489                    ValidationState::Error("File or directory name cannot be empty.".to_string());
1490                cx.notify();
1491                return;
1492            }
1493
1494            let trimmed_filename = filename.trim();
1495            if trimmed_filename != filename {
1496                edit_state.validation_state = ValidationState::Warning(
1497                    "File or directory name contains leading or trailing whitespace.".to_string(),
1498                );
1499                cx.notify();
1500                return;
1501            }
1502            let trimmed_filename = trimmed_filename.trim_start_matches('/');
1503
1504            let Ok(filename) = RelPath::unix(trimmed_filename) else {
1505                edit_state.validation_state = ValidationState::Warning(
1506                    "File or directory name contains leading or trailing whitespace.".to_string(),
1507                );
1508                cx.notify();
1509                return;
1510            };
1511
1512            if let Some(worktree) = self
1513                .project
1514                .read(cx)
1515                .worktree_for_id(edit_state.worktree_id, cx)
1516                && let Some(entry) = worktree.read(cx).entry_for_id(edit_state.entry_id)
1517            {
1518                let mut already_exists = false;
1519                if edit_state.is_new_entry() {
1520                    let new_path = entry.path.join(filename);
1521                    if worktree.read(cx).entry_for_path(&new_path).is_some() {
1522                        already_exists = true;
1523                    }
1524                } else {
1525                    let new_path = if let Some(parent) = entry.path.clone().parent() {
1526                        parent.join(&filename)
1527                    } else {
1528                        filename.into()
1529                    };
1530                    if let Some(existing) = worktree.read(cx).entry_for_path(&new_path)
1531                        && existing.id != entry.id
1532                    {
1533                        already_exists = true;
1534                    }
1535                };
1536                if already_exists {
1537                    edit_state.validation_state = ValidationState::Error(format!(
1538                        "File or directory '{}' already exists at location. Please choose a different name.",
1539                        filename.as_unix_str()
1540                    ));
1541                    cx.notify();
1542                    return;
1543                }
1544            }
1545        }
1546        edit_state.validation_state = ValidationState::None;
1547        cx.notify();
1548    }
1549
1550    fn confirm_edit(
1551        &mut self,
1552        refocus: bool,
1553        window: &mut Window,
1554        cx: &mut Context<Self>,
1555    ) -> Option<Task<Result<()>>> {
1556        let edit_state = self.state.edit_state.as_mut()?;
1557        let worktree_id = edit_state.worktree_id;
1558        let is_new_entry = edit_state.is_new_entry();
1559        let filename = self.filename_editor.read(cx).text(cx);
1560        if filename.trim().is_empty() {
1561            return None;
1562        }
1563
1564        let path_style = self.project.read(cx).path_style(cx);
1565        let filename_indicates_dir = if path_style.is_windows() {
1566            filename.ends_with('/') || filename.ends_with('\\')
1567        } else {
1568            filename.ends_with('/')
1569        };
1570        let filename = if path_style.is_windows() {
1571            filename.trim_start_matches(&['/', '\\'])
1572        } else {
1573            filename.trim_start_matches('/')
1574        };
1575        let filename = RelPath::new(filename.as_ref(), path_style).ok()?.into_arc();
1576
1577        edit_state.is_dir =
1578            edit_state.is_dir || (edit_state.is_new_entry() && filename_indicates_dir);
1579        let is_dir = edit_state.is_dir;
1580        let worktree = self.project.read(cx).worktree_for_id(worktree_id, cx)?;
1581        let entry = worktree.read(cx).entry_for_id(edit_state.entry_id)?.clone();
1582
1583        let edit_task;
1584        let edited_entry_id;
1585        if is_new_entry {
1586            self.state.selection = Some(SelectedEntry {
1587                worktree_id,
1588                entry_id: NEW_ENTRY_ID,
1589            });
1590            let new_path = entry.path.join(&filename);
1591            if worktree.read(cx).entry_for_path(&new_path).is_some() {
1592                return None;
1593            }
1594
1595            edited_entry_id = NEW_ENTRY_ID;
1596            edit_task = self.project.update(cx, |project, cx| {
1597                project.create_entry((worktree_id, new_path), is_dir, cx)
1598            });
1599        } else {
1600            let new_path = if let Some(parent) = entry.path.clone().parent() {
1601                parent.join(&filename)
1602            } else {
1603                filename.clone()
1604            };
1605            if let Some(existing) = worktree.read(cx).entry_for_path(&new_path) {
1606                if existing.id == entry.id && refocus {
1607                    window.focus(&self.focus_handle);
1608                }
1609                return None;
1610            }
1611            edited_entry_id = entry.id;
1612            edit_task = self.project.update(cx, |project, cx| {
1613                project.rename_entry(entry.id, (worktree_id, new_path).into(), cx)
1614            });
1615        };
1616
1617        if refocus {
1618            window.focus(&self.focus_handle);
1619        }
1620        edit_state.processing_filename = Some(filename);
1621        cx.notify();
1622
1623        Some(cx.spawn_in(window, async move |project_panel, cx| {
1624            let new_entry = edit_task.await;
1625            project_panel.update(cx, |project_panel, cx| {
1626                project_panel.state.edit_state = None;
1627                cx.notify();
1628            })?;
1629
1630            match new_entry {
1631                Err(e) => {
1632                    project_panel.update_in( cx, |project_panel, window, cx| {
1633                        project_panel.marked_entries.clear();
1634                        project_panel.update_visible_entries(None, false, false, window, cx);
1635                    }).ok();
1636                    Err(e)?;
1637                }
1638                Ok(CreatedEntry::Included(new_entry)) => {
1639                    project_panel.update_in( cx, |project_panel, window, cx| {
1640                        if let Some(selection) = &mut project_panel.state.selection
1641                            && selection.entry_id == edited_entry_id {
1642                                selection.worktree_id = worktree_id;
1643                                selection.entry_id = new_entry.id;
1644                                project_panel.marked_entries.clear();
1645                                project_panel.expand_to_selection(cx);
1646                            }
1647                        project_panel.update_visible_entries(None, false, false, window, cx);
1648                        if is_new_entry && !is_dir {
1649                            project_panel.open_entry(new_entry.id, true, false, cx);
1650                        }
1651                        cx.notify();
1652                    })?;
1653                }
1654                Ok(CreatedEntry::Excluded { abs_path }) => {
1655                    if let Some(open_task) = project_panel
1656                        .update_in(cx, |project_panel, window, cx| {
1657                            project_panel.marked_entries.clear();
1658                            project_panel.update_visible_entries(None, false, false, window, cx);
1659
1660                            if is_dir {
1661                                project_panel.project.update(cx, |_, cx| {
1662                                    cx.emit(project::Event::Toast {
1663                                        notification_id: "excluded-directory".into(),
1664                                        message: format!("Created an excluded directory at {abs_path:?}.\nAlter `file_scan_exclusions` in the settings to show it in the panel")
1665                                    })
1666                                });
1667                                None
1668                            } else {
1669                                project_panel
1670                                    .workspace
1671                                    .update(cx, |workspace, cx| {
1672                                        workspace.open_abs_path(abs_path, OpenOptions { visible: Some(OpenVisible::All), ..Default::default() }, window, cx)
1673                                    })
1674                                    .ok()
1675                            }
1676                        })
1677                        .ok()
1678                        .flatten()
1679                    {
1680                        let _ = open_task.await?;
1681                    }
1682                }
1683            }
1684            Ok(())
1685        }))
1686    }
1687
1688    fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
1689        if cx.stop_active_drag(window) {
1690            self.drag_target_entry.take();
1691            self.hover_expand_task.take();
1692            return;
1693        }
1694
1695        let previous_edit_state = self.state.edit_state.take();
1696        self.update_visible_entries(None, false, false, window, cx);
1697        self.marked_entries.clear();
1698
1699        if let Some(previously_focused) =
1700            previous_edit_state.and_then(|edit_state| edit_state.previously_focused)
1701        {
1702            self.state.selection = Some(previously_focused);
1703            self.autoscroll(cx);
1704        }
1705
1706        window.focus(&self.focus_handle);
1707        cx.notify();
1708    }
1709
1710    fn open_entry(
1711        &mut self,
1712        entry_id: ProjectEntryId,
1713        focus_opened_item: bool,
1714        allow_preview: bool,
1715
1716        cx: &mut Context<Self>,
1717    ) {
1718        cx.emit(Event::OpenedEntry {
1719            entry_id,
1720            focus_opened_item,
1721            allow_preview,
1722        });
1723    }
1724
1725    fn split_entry(
1726        &mut self,
1727        entry_id: ProjectEntryId,
1728        allow_preview: bool,
1729        split_direction: Option<SplitDirection>,
1730
1731        cx: &mut Context<Self>,
1732    ) {
1733        cx.emit(Event::SplitEntry {
1734            entry_id,
1735            allow_preview,
1736            split_direction,
1737        });
1738    }
1739
1740    fn new_file(&mut self, _: &NewFile, window: &mut Window, cx: &mut Context<Self>) {
1741        self.add_entry(false, window, cx)
1742    }
1743
1744    fn new_directory(&mut self, _: &NewDirectory, window: &mut Window, cx: &mut Context<Self>) {
1745        self.add_entry(true, window, cx)
1746    }
1747
1748    fn add_entry(&mut self, is_dir: bool, window: &mut Window, cx: &mut Context<Self>) {
1749        let Some((worktree_id, entry_id)) = self
1750            .state
1751            .selection
1752            .map(|entry| (entry.worktree_id, entry.entry_id))
1753            .or_else(|| {
1754                let entry_id = self.state.last_worktree_root_id?;
1755                let worktree_id = self
1756                    .project
1757                    .read(cx)
1758                    .worktree_for_entry(entry_id, cx)?
1759                    .read(cx)
1760                    .id();
1761
1762                self.state.selection = Some(SelectedEntry {
1763                    worktree_id,
1764                    entry_id,
1765                });
1766
1767                Some((worktree_id, entry_id))
1768            })
1769        else {
1770            return;
1771        };
1772
1773        let directory_id;
1774        let new_entry_id = self.resolve_entry(entry_id);
1775        if let Some((worktree, expanded_dir_ids)) = self
1776            .project
1777            .read(cx)
1778            .worktree_for_id(worktree_id, cx)
1779            .zip(self.state.expanded_dir_ids.get_mut(&worktree_id))
1780        {
1781            let worktree = worktree.read(cx);
1782            if let Some(mut entry) = worktree.entry_for_id(new_entry_id) {
1783                loop {
1784                    if entry.is_dir() {
1785                        if let Err(ix) = expanded_dir_ids.binary_search(&entry.id) {
1786                            expanded_dir_ids.insert(ix, entry.id);
1787                        }
1788                        directory_id = entry.id;
1789                        break;
1790                    } else {
1791                        if let Some(parent_path) = entry.path.parent()
1792                            && let Some(parent_entry) = worktree.entry_for_path(parent_path)
1793                        {
1794                            entry = parent_entry;
1795                            continue;
1796                        }
1797                        return;
1798                    }
1799                }
1800            } else {
1801                return;
1802            };
1803        } else {
1804            return;
1805        };
1806
1807        self.marked_entries.clear();
1808        self.state.edit_state = Some(EditState {
1809            worktree_id,
1810            entry_id: directory_id,
1811            leaf_entry_id: None,
1812            is_dir,
1813            processing_filename: None,
1814            previously_focused: self.state.selection,
1815            depth: 0,
1816            validation_state: ValidationState::None,
1817        });
1818        self.update_visible_entries(Some((worktree_id, NEW_ENTRY_ID)), true, true, window, cx);
1819        cx.notify();
1820    }
1821
1822    fn unflatten_entry_id(&self, leaf_entry_id: ProjectEntryId) -> ProjectEntryId {
1823        if let Some(ancestors) = self.state.ancestors.get(&leaf_entry_id) {
1824            ancestors
1825                .ancestors
1826                .get(ancestors.current_ancestor_depth)
1827                .copied()
1828                .unwrap_or(leaf_entry_id)
1829        } else {
1830            leaf_entry_id
1831        }
1832    }
1833
1834    fn rename_impl(
1835        &mut self,
1836        selection: Option<Range<usize>>,
1837        window: &mut Window,
1838        cx: &mut Context<Self>,
1839    ) {
1840        if let Some(SelectedEntry {
1841            worktree_id,
1842            entry_id,
1843        }) = self.state.selection
1844            && let Some(worktree) = self.project.read(cx).worktree_for_id(worktree_id, cx)
1845        {
1846            let sub_entry_id = self.unflatten_entry_id(entry_id);
1847            if let Some(entry) = worktree.read(cx).entry_for_id(sub_entry_id) {
1848                #[cfg(target_os = "windows")]
1849                if Some(entry) == worktree.read(cx).root_entry() {
1850                    return;
1851                }
1852
1853                if Some(entry) == worktree.read(cx).root_entry() {
1854                    let settings = ProjectPanelSettings::get_global(cx);
1855                    let visible_worktrees_count =
1856                        self.project.read(cx).visible_worktrees(cx).count();
1857                    if settings.hide_root && visible_worktrees_count == 1 {
1858                        return;
1859                    }
1860                }
1861
1862                self.state.edit_state = Some(EditState {
1863                    worktree_id,
1864                    entry_id: sub_entry_id,
1865                    leaf_entry_id: Some(entry_id),
1866                    is_dir: entry.is_dir(),
1867                    processing_filename: None,
1868                    previously_focused: None,
1869                    depth: 0,
1870                    validation_state: ValidationState::None,
1871                });
1872                let file_name = entry.path.file_name().unwrap_or_default().to_string();
1873                let selection = selection.unwrap_or_else(|| {
1874                    let file_stem = entry.path.file_stem().map(|s| s.to_string());
1875                    let selection_end =
1876                        file_stem.map_or(file_name.len(), |file_stem| file_stem.len());
1877                    0..selection_end
1878                });
1879                self.filename_editor.update(cx, |editor, cx| {
1880                    editor.set_text(file_name, window, cx);
1881                    editor.change_selections(Default::default(), window, cx, |s| {
1882                        s.select_ranges([selection])
1883                    });
1884                    window.focus(&editor.focus_handle(cx));
1885                });
1886                self.update_visible_entries(None, false, true, window, cx);
1887                cx.notify();
1888            }
1889        }
1890    }
1891
1892    fn rename(&mut self, _: &Rename, window: &mut Window, cx: &mut Context<Self>) {
1893        self.rename_impl(None, window, cx);
1894    }
1895
1896    fn trash(&mut self, action: &Trash, window: &mut Window, cx: &mut Context<Self>) {
1897        self.remove(true, action.skip_prompt, window, cx);
1898    }
1899
1900    fn delete(&mut self, action: &Delete, window: &mut Window, cx: &mut Context<Self>) {
1901        self.remove(false, action.skip_prompt, window, cx);
1902    }
1903
1904    fn remove(
1905        &mut self,
1906        trash: bool,
1907        skip_prompt: bool,
1908        window: &mut Window,
1909        cx: &mut Context<ProjectPanel>,
1910    ) {
1911        maybe!({
1912            let items_to_delete = self.disjoint_entries(cx);
1913            if items_to_delete.is_empty() {
1914                return None;
1915            }
1916            let project = self.project.read(cx);
1917
1918            let mut dirty_buffers = 0;
1919            let file_paths = items_to_delete
1920                .iter()
1921                .filter_map(|selection| {
1922                    let project_path = project.path_for_entry(selection.entry_id, cx)?;
1923                    dirty_buffers +=
1924                        project.dirty_buffers(cx).any(|path| path == project_path) as usize;
1925                    Some((
1926                        selection.entry_id,
1927                        project_path.path.file_name()?.to_string(),
1928                    ))
1929                })
1930                .collect::<Vec<_>>();
1931            if file_paths.is_empty() {
1932                return None;
1933            }
1934            let answer = if !skip_prompt {
1935                let operation = if trash { "Trash" } else { "Delete" };
1936                let prompt = match file_paths.first() {
1937                    Some((_, path)) if file_paths.len() == 1 => {
1938                        let unsaved_warning = if dirty_buffers > 0 {
1939                            "\n\nIt has unsaved changes, which will be lost."
1940                        } else {
1941                            ""
1942                        };
1943
1944                        format!("{operation} {path}?{unsaved_warning}")
1945                    }
1946                    _ => {
1947                        const CUTOFF_POINT: usize = 10;
1948                        let names = if file_paths.len() > CUTOFF_POINT {
1949                            let truncated_path_counts = file_paths.len() - CUTOFF_POINT;
1950                            let mut paths = file_paths
1951                                .iter()
1952                                .map(|(_, path)| path.clone())
1953                                .take(CUTOFF_POINT)
1954                                .collect::<Vec<_>>();
1955                            paths.truncate(CUTOFF_POINT);
1956                            if truncated_path_counts == 1 {
1957                                paths.push(".. 1 file not shown".into());
1958                            } else {
1959                                paths.push(format!(".. {} files not shown", truncated_path_counts));
1960                            }
1961                            paths
1962                        } else {
1963                            file_paths.iter().map(|(_, path)| path.clone()).collect()
1964                        };
1965                        let unsaved_warning = if dirty_buffers == 0 {
1966                            String::new()
1967                        } else if dirty_buffers == 1 {
1968                            "\n\n1 of these has unsaved changes, which will be lost.".to_string()
1969                        } else {
1970                            format!(
1971                                "\n\n{dirty_buffers} of these have unsaved changes, which will be lost."
1972                            )
1973                        };
1974
1975                        format!(
1976                            "Do you want to {} the following {} files?\n{}{unsaved_warning}",
1977                            operation.to_lowercase(),
1978                            file_paths.len(),
1979                            names.join("\n")
1980                        )
1981                    }
1982                };
1983                Some(window.prompt(PromptLevel::Info, &prompt, None, &[operation, "Cancel"], cx))
1984            } else {
1985                None
1986            };
1987            let next_selection = self.find_next_selection_after_deletion(items_to_delete, cx);
1988            cx.spawn_in(window, async move |panel, cx| {
1989                if let Some(answer) = answer
1990                    && answer.await != Ok(0)
1991                {
1992                    return anyhow::Ok(());
1993                }
1994                for (entry_id, _) in file_paths {
1995                    panel
1996                        .update(cx, |panel, cx| {
1997                            panel
1998                                .project
1999                                .update(cx, |project, cx| project.delete_entry(entry_id, trash, cx))
2000                                .context("no such entry")
2001                        })??
2002                        .await?;
2003                }
2004                panel.update_in(cx, |panel, window, cx| {
2005                    if let Some(next_selection) = next_selection {
2006                        panel.update_visible_entries(
2007                            Some((next_selection.worktree_id, next_selection.entry_id)),
2008                            false,
2009                            true,
2010                            window,
2011                            cx,
2012                        );
2013                    } else {
2014                        panel.select_last(&SelectLast {}, window, cx);
2015                    }
2016                })?;
2017                Ok(())
2018            })
2019            .detach_and_log_err(cx);
2020            Some(())
2021        });
2022    }
2023
2024    fn find_next_selection_after_deletion(
2025        &self,
2026        sanitized_entries: BTreeSet<SelectedEntry>,
2027        cx: &mut Context<Self>,
2028    ) -> Option<SelectedEntry> {
2029        if sanitized_entries.is_empty() {
2030            return None;
2031        }
2032        let project = self.project.read(cx);
2033        let (worktree_id, worktree) = sanitized_entries
2034            .iter()
2035            .map(|entry| entry.worktree_id)
2036            .filter_map(|id| project.worktree_for_id(id, cx).map(|w| (id, w.read(cx))))
2037            .max_by(|(_, a), (_, b)| a.root_name().cmp(b.root_name()))?;
2038        let git_store = project.git_store().read(cx);
2039
2040        let marked_entries_in_worktree = sanitized_entries
2041            .iter()
2042            .filter(|e| e.worktree_id == worktree_id)
2043            .collect::<HashSet<_>>();
2044        let latest_entry = marked_entries_in_worktree
2045            .iter()
2046            .max_by(|a, b| {
2047                match (
2048                    worktree.entry_for_id(a.entry_id),
2049                    worktree.entry_for_id(b.entry_id),
2050                ) {
2051                    (Some(a), Some(b)) => compare_paths(
2052                        (a.path.as_std_path(), a.is_file()),
2053                        (b.path.as_std_path(), b.is_file()),
2054                    ),
2055                    _ => cmp::Ordering::Equal,
2056                }
2057            })
2058            .and_then(|e| worktree.entry_for_id(e.entry_id))?;
2059
2060        let parent_path = latest_entry.path.parent()?;
2061        let parent_entry = worktree.entry_for_path(parent_path)?;
2062
2063        // Remove all siblings that are being deleted except the last marked entry
2064        let repo_snapshots = git_store.repo_snapshots(cx);
2065        let worktree_snapshot = worktree.snapshot();
2066        let hide_gitignore = ProjectPanelSettings::get_global(cx).hide_gitignore;
2067        let mut siblings: Vec<_> =
2068            ChildEntriesGitIter::new(&repo_snapshots, &worktree_snapshot, parent_path)
2069                .filter(|sibling| {
2070                    (sibling.id == latest_entry.id)
2071                        || (!marked_entries_in_worktree.contains(&&SelectedEntry {
2072                            worktree_id,
2073                            entry_id: sibling.id,
2074                        }) && (!hide_gitignore || !sibling.is_ignored))
2075                })
2076                .map(|entry| entry.to_owned())
2077                .collect();
2078
2079        sort_worktree_entries(&mut siblings);
2080        let sibling_entry_index = siblings
2081            .iter()
2082            .position(|sibling| sibling.id == latest_entry.id)?;
2083
2084        if let Some(next_sibling) = sibling_entry_index
2085            .checked_add(1)
2086            .and_then(|i| siblings.get(i))
2087        {
2088            return Some(SelectedEntry {
2089                worktree_id,
2090                entry_id: next_sibling.id,
2091            });
2092        }
2093        if let Some(prev_sibling) = sibling_entry_index
2094            .checked_sub(1)
2095            .and_then(|i| siblings.get(i))
2096        {
2097            return Some(SelectedEntry {
2098                worktree_id,
2099                entry_id: prev_sibling.id,
2100            });
2101        }
2102        // No neighbour sibling found, fall back to parent
2103        Some(SelectedEntry {
2104            worktree_id,
2105            entry_id: parent_entry.id,
2106        })
2107    }
2108
2109    fn unfold_directory(
2110        &mut self,
2111        _: &UnfoldDirectory,
2112        window: &mut Window,
2113        cx: &mut Context<Self>,
2114    ) {
2115        if let Some((worktree, entry)) = self.selected_entry(cx) {
2116            self.state.unfolded_dir_ids.insert(entry.id);
2117
2118            let snapshot = worktree.snapshot();
2119            let mut parent_path = entry.path.parent();
2120            while let Some(path) = parent_path {
2121                if let Some(parent_entry) = worktree.entry_for_path(path) {
2122                    let mut children_iter = snapshot.child_entries(path);
2123
2124                    if children_iter.by_ref().take(2).count() > 1 {
2125                        break;
2126                    }
2127
2128                    self.state.unfolded_dir_ids.insert(parent_entry.id);
2129                    parent_path = path.parent();
2130                } else {
2131                    break;
2132                }
2133            }
2134
2135            self.update_visible_entries(None, false, true, window, cx);
2136            cx.notify();
2137        }
2138    }
2139
2140    fn fold_directory(&mut self, _: &FoldDirectory, window: &mut Window, cx: &mut Context<Self>) {
2141        if let Some((worktree, entry)) = self.selected_entry(cx) {
2142            self.state.unfolded_dir_ids.remove(&entry.id);
2143
2144            let snapshot = worktree.snapshot();
2145            let mut path = &*entry.path;
2146            loop {
2147                let mut child_entries_iter = snapshot.child_entries(path);
2148                if let Some(child) = child_entries_iter.next() {
2149                    if child_entries_iter.next().is_none() && child.is_dir() {
2150                        self.state.unfolded_dir_ids.remove(&child.id);
2151                        path = &*child.path;
2152                    } else {
2153                        break;
2154                    }
2155                } else {
2156                    break;
2157                }
2158            }
2159
2160            self.update_visible_entries(None, false, true, window, cx);
2161            cx.notify();
2162        }
2163    }
2164
2165    fn scroll_up(&mut self, _: &ScrollUp, window: &mut Window, cx: &mut Context<Self>) {
2166        for _ in 0..self.rendered_entries_len / 2 {
2167            window.dispatch_action(SelectPrevious.boxed_clone(), cx);
2168        }
2169    }
2170
2171    fn scroll_down(&mut self, _: &ScrollDown, window: &mut Window, cx: &mut Context<Self>) {
2172        for _ in 0..self.rendered_entries_len / 2 {
2173            window.dispatch_action(SelectNext.boxed_clone(), cx);
2174        }
2175    }
2176
2177    fn scroll_cursor_center(
2178        &mut self,
2179        _: &ScrollCursorCenter,
2180        _: &mut Window,
2181        cx: &mut Context<Self>,
2182    ) {
2183        if let Some((_, _, index)) = self
2184            .state
2185            .selection
2186            .and_then(|s| self.index_for_selection(s))
2187        {
2188            self.scroll_handle
2189                .scroll_to_item_strict(index, ScrollStrategy::Center);
2190            cx.notify();
2191        }
2192    }
2193
2194    fn scroll_cursor_top(&mut self, _: &ScrollCursorTop, _: &mut Window, cx: &mut Context<Self>) {
2195        if let Some((_, _, index)) = self
2196            .state
2197            .selection
2198            .and_then(|s| self.index_for_selection(s))
2199        {
2200            self.scroll_handle
2201                .scroll_to_item_strict(index, ScrollStrategy::Top);
2202            cx.notify();
2203        }
2204    }
2205
2206    fn scroll_cursor_bottom(
2207        &mut self,
2208        _: &ScrollCursorBottom,
2209        _: &mut Window,
2210        cx: &mut Context<Self>,
2211    ) {
2212        if let Some((_, _, index)) = self
2213            .state
2214            .selection
2215            .and_then(|s| self.index_for_selection(s))
2216        {
2217            self.scroll_handle
2218                .scroll_to_item_strict(index, ScrollStrategy::Bottom);
2219            cx.notify();
2220        }
2221    }
2222
2223    fn select_next(&mut self, _: &SelectNext, window: &mut Window, cx: &mut Context<Self>) {
2224        if let Some(edit_state) = &self.state.edit_state
2225            && edit_state.processing_filename.is_none()
2226        {
2227            self.filename_editor.update(cx, |editor, cx| {
2228                editor.move_to_end_of_line(
2229                    &editor::actions::MoveToEndOfLine {
2230                        stop_at_soft_wraps: false,
2231                    },
2232                    window,
2233                    cx,
2234                );
2235            });
2236            return;
2237        }
2238        if let Some(selection) = self.state.selection {
2239            let (mut worktree_ix, mut entry_ix, _) =
2240                self.index_for_selection(selection).unwrap_or_default();
2241            if let Some(worktree_entries) = self
2242                .state
2243                .visible_entries
2244                .get(worktree_ix)
2245                .map(|v| &v.entries)
2246            {
2247                if entry_ix + 1 < worktree_entries.len() {
2248                    entry_ix += 1;
2249                } else {
2250                    worktree_ix += 1;
2251                    entry_ix = 0;
2252                }
2253            }
2254
2255            if let Some(VisibleEntriesForWorktree {
2256                worktree_id,
2257                entries,
2258                ..
2259            }) = self.state.visible_entries.get(worktree_ix)
2260                && let Some(entry) = entries.get(entry_ix)
2261            {
2262                let selection = SelectedEntry {
2263                    worktree_id: *worktree_id,
2264                    entry_id: entry.id,
2265                };
2266                self.state.selection = Some(selection);
2267                if window.modifiers().shift {
2268                    self.marked_entries.push(selection);
2269                }
2270
2271                self.autoscroll(cx);
2272                cx.notify();
2273            }
2274        } else {
2275            self.select_first(&SelectFirst {}, window, cx);
2276        }
2277    }
2278
2279    fn select_prev_diagnostic(
2280        &mut self,
2281        action: &SelectPrevDiagnostic,
2282        window: &mut Window,
2283        cx: &mut Context<Self>,
2284    ) {
2285        let selection = self.find_entry(
2286            self.state.selection.as_ref(),
2287            true,
2288            |entry, worktree_id| {
2289                self.state.selection.is_none_or(|selection| {
2290                    if selection.worktree_id == worktree_id {
2291                        selection.entry_id != entry.id
2292                    } else {
2293                        true
2294                    }
2295                }) && entry.is_file()
2296                    && self
2297                        .diagnostics
2298                        .get(&(worktree_id, entry.path.clone()))
2299                        .is_some_and(|severity| action.severity.matches(*severity))
2300            },
2301            cx,
2302        );
2303
2304        if let Some(selection) = selection {
2305            self.state.selection = Some(selection);
2306            self.expand_entry(selection.worktree_id, selection.entry_id, cx);
2307            self.update_visible_entries(
2308                Some((selection.worktree_id, selection.entry_id)),
2309                false,
2310                true,
2311                window,
2312                cx,
2313            );
2314            cx.notify();
2315        }
2316    }
2317
2318    fn select_next_diagnostic(
2319        &mut self,
2320        action: &SelectNextDiagnostic,
2321        window: &mut Window,
2322        cx: &mut Context<Self>,
2323    ) {
2324        let selection = self.find_entry(
2325            self.state.selection.as_ref(),
2326            false,
2327            |entry, worktree_id| {
2328                self.state.selection.is_none_or(|selection| {
2329                    if selection.worktree_id == worktree_id {
2330                        selection.entry_id != entry.id
2331                    } else {
2332                        true
2333                    }
2334                }) && entry.is_file()
2335                    && self
2336                        .diagnostics
2337                        .get(&(worktree_id, entry.path.clone()))
2338                        .is_some_and(|severity| action.severity.matches(*severity))
2339            },
2340            cx,
2341        );
2342
2343        if let Some(selection) = selection {
2344            self.state.selection = Some(selection);
2345            self.expand_entry(selection.worktree_id, selection.entry_id, cx);
2346            self.update_visible_entries(
2347                Some((selection.worktree_id, selection.entry_id)),
2348                false,
2349                true,
2350                window,
2351                cx,
2352            );
2353            cx.notify();
2354        }
2355    }
2356
2357    fn select_prev_git_entry(
2358        &mut self,
2359        _: &SelectPrevGitEntry,
2360        window: &mut Window,
2361        cx: &mut Context<Self>,
2362    ) {
2363        let selection = self.find_entry(
2364            self.state.selection.as_ref(),
2365            true,
2366            |entry, worktree_id| {
2367                (self.state.selection.is_none()
2368                    || self.state.selection.is_some_and(|selection| {
2369                        if selection.worktree_id == worktree_id {
2370                            selection.entry_id != entry.id
2371                        } else {
2372                            true
2373                        }
2374                    }))
2375                    && entry.is_file()
2376                    && entry.git_summary.index.modified + entry.git_summary.worktree.modified > 0
2377            },
2378            cx,
2379        );
2380
2381        if let Some(selection) = selection {
2382            self.state.selection = Some(selection);
2383            self.expand_entry(selection.worktree_id, selection.entry_id, cx);
2384            self.update_visible_entries(
2385                Some((selection.worktree_id, selection.entry_id)),
2386                false,
2387                true,
2388                window,
2389                cx,
2390            );
2391            cx.notify();
2392        }
2393    }
2394
2395    fn select_prev_directory(
2396        &mut self,
2397        _: &SelectPrevDirectory,
2398        _: &mut Window,
2399        cx: &mut Context<Self>,
2400    ) {
2401        let selection = self.find_visible_entry(
2402            self.state.selection.as_ref(),
2403            true,
2404            |entry, worktree_id| {
2405                self.state.selection.is_none_or(|selection| {
2406                    if selection.worktree_id == worktree_id {
2407                        selection.entry_id != entry.id
2408                    } else {
2409                        true
2410                    }
2411                }) && entry.is_dir()
2412            },
2413            cx,
2414        );
2415
2416        if let Some(selection) = selection {
2417            self.state.selection = Some(selection);
2418            self.autoscroll(cx);
2419            cx.notify();
2420        }
2421    }
2422
2423    fn select_next_directory(
2424        &mut self,
2425        _: &SelectNextDirectory,
2426        _: &mut Window,
2427        cx: &mut Context<Self>,
2428    ) {
2429        let selection = self.find_visible_entry(
2430            self.state.selection.as_ref(),
2431            false,
2432            |entry, worktree_id| {
2433                self.state.selection.is_none_or(|selection| {
2434                    if selection.worktree_id == worktree_id {
2435                        selection.entry_id != entry.id
2436                    } else {
2437                        true
2438                    }
2439                }) && entry.is_dir()
2440            },
2441            cx,
2442        );
2443
2444        if let Some(selection) = selection {
2445            self.state.selection = Some(selection);
2446            self.autoscroll(cx);
2447            cx.notify();
2448        }
2449    }
2450
2451    fn select_next_git_entry(
2452        &mut self,
2453        _: &SelectNextGitEntry,
2454        window: &mut Window,
2455        cx: &mut Context<Self>,
2456    ) {
2457        let selection = self.find_entry(
2458            self.state.selection.as_ref(),
2459            false,
2460            |entry, worktree_id| {
2461                self.state.selection.is_none_or(|selection| {
2462                    if selection.worktree_id == worktree_id {
2463                        selection.entry_id != entry.id
2464                    } else {
2465                        true
2466                    }
2467                }) && entry.is_file()
2468                    && entry.git_summary.index.modified + entry.git_summary.worktree.modified > 0
2469            },
2470            cx,
2471        );
2472
2473        if let Some(selection) = selection {
2474            self.state.selection = Some(selection);
2475            self.expand_entry(selection.worktree_id, selection.entry_id, cx);
2476            self.update_visible_entries(
2477                Some((selection.worktree_id, selection.entry_id)),
2478                false,
2479                true,
2480                window,
2481                cx,
2482            );
2483            cx.notify();
2484        }
2485    }
2486
2487    fn select_parent(&mut self, _: &SelectParent, window: &mut Window, cx: &mut Context<Self>) {
2488        if let Some((worktree, entry)) = self.selected_sub_entry(cx) {
2489            if let Some(parent) = entry.path.parent() {
2490                let worktree = worktree.read(cx);
2491                if let Some(parent_entry) = worktree.entry_for_path(parent) {
2492                    self.state.selection = Some(SelectedEntry {
2493                        worktree_id: worktree.id(),
2494                        entry_id: parent_entry.id,
2495                    });
2496                    self.autoscroll(cx);
2497                    cx.notify();
2498                }
2499            }
2500        } else {
2501            self.select_first(&SelectFirst {}, window, cx);
2502        }
2503    }
2504
2505    fn select_first(&mut self, _: &SelectFirst, window: &mut Window, cx: &mut Context<Self>) {
2506        if let Some(VisibleEntriesForWorktree {
2507            worktree_id,
2508            entries,
2509            ..
2510        }) = self.state.visible_entries.first()
2511            && let Some(entry) = entries.first()
2512        {
2513            let selection = SelectedEntry {
2514                worktree_id: *worktree_id,
2515                entry_id: entry.id,
2516            };
2517            self.state.selection = Some(selection);
2518            if window.modifiers().shift {
2519                self.marked_entries.push(selection);
2520            }
2521            self.autoscroll(cx);
2522            cx.notify();
2523        }
2524    }
2525
2526    fn select_last(&mut self, _: &SelectLast, _: &mut Window, cx: &mut Context<Self>) {
2527        if let Some(VisibleEntriesForWorktree {
2528            worktree_id,
2529            entries,
2530            ..
2531        }) = self.state.visible_entries.last()
2532        {
2533            let worktree = self.project.read(cx).worktree_for_id(*worktree_id, cx);
2534            if let (Some(worktree), Some(entry)) = (worktree, entries.last()) {
2535                let worktree = worktree.read(cx);
2536                if let Some(entry) = worktree.entry_for_id(entry.id) {
2537                    let selection = SelectedEntry {
2538                        worktree_id: *worktree_id,
2539                        entry_id: entry.id,
2540                    };
2541                    self.state.selection = Some(selection);
2542                    self.autoscroll(cx);
2543                    cx.notify();
2544                }
2545            }
2546        }
2547    }
2548
2549    fn autoscroll(&mut self, cx: &mut Context<Self>) {
2550        if let Some((_, _, index)) = self
2551            .state
2552            .selection
2553            .and_then(|s| self.index_for_selection(s))
2554        {
2555            self.scroll_handle.scroll_to_item_with_offset(
2556                index,
2557                ScrollStrategy::Center,
2558                self.sticky_items_count,
2559            );
2560            cx.notify();
2561        }
2562    }
2563
2564    fn cut(&mut self, _: &Cut, _: &mut Window, cx: &mut Context<Self>) {
2565        let entries = self.disjoint_entries(cx);
2566        if !entries.is_empty() {
2567            self.clipboard = Some(ClipboardEntry::Cut(entries));
2568            cx.notify();
2569        }
2570    }
2571
2572    fn copy(&mut self, _: &Copy, _: &mut Window, cx: &mut Context<Self>) {
2573        let entries = self.disjoint_entries(cx);
2574        if !entries.is_empty() {
2575            self.clipboard = Some(ClipboardEntry::Copied(entries));
2576            cx.notify();
2577        }
2578    }
2579
2580    fn create_paste_path(
2581        &self,
2582        source: &SelectedEntry,
2583        (worktree, target_entry): (Entity<Worktree>, &Entry),
2584        cx: &App,
2585    ) -> Option<(Arc<RelPath>, Option<Range<usize>>)> {
2586        let mut new_path = target_entry.path.to_rel_path_buf();
2587        // If we're pasting into a file, or a directory into itself, go up one level.
2588        if target_entry.is_file() || (target_entry.is_dir() && target_entry.id == source.entry_id) {
2589            new_path.pop();
2590        }
2591        let clipboard_entry_file_name = self
2592            .project
2593            .read(cx)
2594            .path_for_entry(source.entry_id, cx)?
2595            .path
2596            .file_name()?
2597            .to_string();
2598        new_path.push(RelPath::unix(&clipboard_entry_file_name).unwrap());
2599        let extension = new_path.extension().map(|s| s.to_string());
2600        let file_name_without_extension = new_path.file_stem()?.to_string();
2601        let file_name_len = file_name_without_extension.len();
2602        let mut disambiguation_range = None;
2603        let mut ix = 0;
2604        {
2605            let worktree = worktree.read(cx);
2606            while worktree.entry_for_path(&new_path).is_some() {
2607                new_path.pop();
2608
2609                let mut new_file_name = file_name_without_extension.to_string();
2610
2611                let disambiguation = " copy";
2612                let mut disambiguation_len = disambiguation.len();
2613
2614                new_file_name.push_str(disambiguation);
2615
2616                if ix > 0 {
2617                    let extra_disambiguation = format!(" {}", ix);
2618                    disambiguation_len += extra_disambiguation.len();
2619                    new_file_name.push_str(&extra_disambiguation);
2620                }
2621                if let Some(extension) = extension.as_ref() {
2622                    new_file_name.push_str(".");
2623                    new_file_name.push_str(extension);
2624                }
2625
2626                new_path.push(RelPath::unix(&new_file_name).unwrap());
2627
2628                disambiguation_range = Some(file_name_len..(file_name_len + disambiguation_len));
2629                ix += 1;
2630            }
2631        }
2632        Some((new_path.as_rel_path().into(), disambiguation_range))
2633    }
2634
2635    fn paste(&mut self, _: &Paste, window: &mut Window, cx: &mut Context<Self>) {
2636        maybe!({
2637            let (worktree, entry) = self.selected_entry_handle(cx)?;
2638            let entry = entry.clone();
2639            let worktree_id = worktree.read(cx).id();
2640            let clipboard_entries = self
2641                .clipboard
2642                .as_ref()
2643                .filter(|clipboard| !clipboard.items().is_empty())?;
2644
2645            enum PasteTask {
2646                Rename(Task<Result<CreatedEntry>>),
2647                Copy(Task<Result<Option<Entry>>>),
2648            }
2649
2650            let mut paste_tasks = Vec::new();
2651            let mut disambiguation_range = None;
2652            let clip_is_cut = clipboard_entries.is_cut();
2653            for clipboard_entry in clipboard_entries.items() {
2654                let (new_path, new_disambiguation_range) =
2655                    self.create_paste_path(clipboard_entry, self.selected_sub_entry(cx)?, cx)?;
2656                let clip_entry_id = clipboard_entry.entry_id;
2657                let task = if clipboard_entries.is_cut() {
2658                    let task = self.project.update(cx, |project, cx| {
2659                        project.rename_entry(clip_entry_id, (worktree_id, new_path).into(), cx)
2660                    });
2661                    PasteTask::Rename(task)
2662                } else {
2663                    let task = self.project.update(cx, |project, cx| {
2664                        project.copy_entry(clip_entry_id, (worktree_id, new_path).into(), cx)
2665                    });
2666                    PasteTask::Copy(task)
2667                };
2668                paste_tasks.push(task);
2669                disambiguation_range = new_disambiguation_range.or(disambiguation_range);
2670            }
2671
2672            let item_count = paste_tasks.len();
2673
2674            cx.spawn_in(window, async move |project_panel, cx| {
2675                let mut last_succeed = None;
2676                for task in paste_tasks {
2677                    match task {
2678                        PasteTask::Rename(task) => {
2679                            if let Some(CreatedEntry::Included(entry)) =
2680                                task.await.notify_async_err(cx)
2681                            {
2682                                last_succeed = Some(entry);
2683                            }
2684                        }
2685                        PasteTask::Copy(task) => {
2686                            if let Some(Some(entry)) = task.await.notify_async_err(cx) {
2687                                last_succeed = Some(entry);
2688                            }
2689                        }
2690                    }
2691                }
2692                // update selection
2693                if let Some(entry) = last_succeed {
2694                    project_panel
2695                        .update_in(cx, |project_panel, window, cx| {
2696                            project_panel.state.selection = Some(SelectedEntry {
2697                                worktree_id,
2698                                entry_id: entry.id,
2699                            });
2700
2701                            if item_count == 1 {
2702                                // open entry if not dir, setting is enabled, and only focus if rename is not pending
2703                                if !entry.is_dir()
2704                                    && ProjectPanelSettings::get_global(cx).open_file_on_paste
2705                                {
2706                                    project_panel.open_entry(
2707                                        entry.id,
2708                                        disambiguation_range.is_none(),
2709                                        false,
2710                                        cx,
2711                                    );
2712                                }
2713
2714                                // if only one entry was pasted and it was disambiguated, open the rename editor
2715                                if disambiguation_range.is_some() {
2716                                    cx.defer_in(window, |this, window, cx| {
2717                                        this.rename_impl(disambiguation_range, window, cx);
2718                                    });
2719                                }
2720                            }
2721                        })
2722                        .ok();
2723                }
2724
2725                anyhow::Ok(())
2726            })
2727            .detach_and_log_err(cx);
2728
2729            if clip_is_cut {
2730                // Convert the clipboard cut entry to a copy entry after the first paste.
2731                self.clipboard = self.clipboard.take().map(ClipboardEntry::into_copy_entry);
2732            }
2733
2734            self.expand_entry(worktree_id, entry.id, cx);
2735            Some(())
2736        });
2737    }
2738
2739    fn duplicate(&mut self, _: &Duplicate, window: &mut Window, cx: &mut Context<Self>) {
2740        self.copy(&Copy {}, window, cx);
2741        self.paste(&Paste {}, window, cx);
2742    }
2743
2744    fn copy_path(
2745        &mut self,
2746        _: &zed_actions::workspace::CopyPath,
2747        _: &mut Window,
2748        cx: &mut Context<Self>,
2749    ) {
2750        let abs_file_paths = {
2751            let project = self.project.read(cx);
2752            self.effective_entries()
2753                .into_iter()
2754                .filter_map(|entry| {
2755                    let entry_path = project.path_for_entry(entry.entry_id, cx)?.path;
2756                    Some(
2757                        project
2758                            .worktree_for_id(entry.worktree_id, cx)?
2759                            .read(cx)
2760                            .absolutize(&entry_path)
2761                            .to_string_lossy()
2762                            .to_string(),
2763                    )
2764                })
2765                .collect::<Vec<_>>()
2766        };
2767        if !abs_file_paths.is_empty() {
2768            cx.write_to_clipboard(ClipboardItem::new_string(abs_file_paths.join("\n")));
2769        }
2770    }
2771
2772    fn copy_relative_path(
2773        &mut self,
2774        _: &zed_actions::workspace::CopyRelativePath,
2775        _: &mut Window,
2776        cx: &mut Context<Self>,
2777    ) {
2778        let path_style = self.project.read(cx).path_style(cx);
2779        let file_paths = {
2780            let project = self.project.read(cx);
2781            self.effective_entries()
2782                .into_iter()
2783                .filter_map(|entry| {
2784                    Some(
2785                        project
2786                            .path_for_entry(entry.entry_id, cx)?
2787                            .path
2788                            .display(path_style)
2789                            .into_owned(),
2790                    )
2791                })
2792                .collect::<Vec<_>>()
2793        };
2794        if !file_paths.is_empty() {
2795            cx.write_to_clipboard(ClipboardItem::new_string(file_paths.join("\n")));
2796        }
2797    }
2798
2799    fn reveal_in_finder(
2800        &mut self,
2801        _: &RevealInFileManager,
2802        _: &mut Window,
2803        cx: &mut Context<Self>,
2804    ) {
2805        if let Some((worktree, entry)) = self.selected_sub_entry(cx) {
2806            cx.reveal_path(&worktree.read(cx).absolutize(&entry.path));
2807        }
2808    }
2809
2810    fn remove_from_project(
2811        &mut self,
2812        _: &RemoveFromProject,
2813        _window: &mut Window,
2814        cx: &mut Context<Self>,
2815    ) {
2816        for entry in self.effective_entries().iter() {
2817            let worktree_id = entry.worktree_id;
2818            self.project
2819                .update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
2820        }
2821    }
2822
2823    fn file_abs_paths_to_diff(&self, cx: &Context<Self>) -> Option<(PathBuf, PathBuf)> {
2824        let mut selections_abs_path = self
2825            .marked_entries
2826            .iter()
2827            .filter_map(|entry| {
2828                let project = self.project.read(cx);
2829                let worktree = project.worktree_for_id(entry.worktree_id, cx)?;
2830                let entry = worktree.read(cx).entry_for_id(entry.entry_id)?;
2831                if !entry.is_file() {
2832                    return None;
2833                }
2834                Some(worktree.read(cx).absolutize(&entry.path))
2835            })
2836            .rev();
2837
2838        let last_path = selections_abs_path.next()?;
2839        let previous_to_last = selections_abs_path.next()?;
2840        Some((previous_to_last, last_path))
2841    }
2842
2843    fn compare_marked_files(
2844        &mut self,
2845        _: &CompareMarkedFiles,
2846        window: &mut Window,
2847        cx: &mut Context<Self>,
2848    ) {
2849        let selected_files = self.file_abs_paths_to_diff(cx);
2850        if let Some((file_path1, file_path2)) = selected_files {
2851            self.workspace
2852                .update(cx, |workspace, cx| {
2853                    FileDiffView::open(file_path1, file_path2, workspace, window, cx)
2854                        .detach_and_log_err(cx);
2855                })
2856                .ok();
2857        }
2858    }
2859
2860    fn open_system(&mut self, _: &OpenWithSystem, _: &mut Window, cx: &mut Context<Self>) {
2861        if let Some((worktree, entry)) = self.selected_entry(cx) {
2862            let abs_path = worktree.absolutize(&entry.path);
2863            cx.open_with_system(&abs_path);
2864        }
2865    }
2866
2867    fn open_in_terminal(
2868        &mut self,
2869        _: &OpenInTerminal,
2870        window: &mut Window,
2871        cx: &mut Context<Self>,
2872    ) {
2873        if let Some((worktree, entry)) = self.selected_sub_entry(cx) {
2874            let abs_path = match &entry.canonical_path {
2875                Some(canonical_path) => canonical_path.to_path_buf(),
2876                None => worktree.read(cx).absolutize(&entry.path),
2877            };
2878
2879            let working_directory = if entry.is_dir() {
2880                Some(abs_path)
2881            } else {
2882                abs_path.parent().map(|path| path.to_path_buf())
2883            };
2884            if let Some(working_directory) = working_directory {
2885                window.dispatch_action(
2886                    workspace::OpenTerminal { working_directory }.boxed_clone(),
2887                    cx,
2888                )
2889            }
2890        }
2891    }
2892
2893    pub fn new_search_in_directory(
2894        &mut self,
2895        _: &NewSearchInDirectory,
2896        window: &mut Window,
2897        cx: &mut Context<Self>,
2898    ) {
2899        if let Some((worktree, entry)) = self.selected_sub_entry(cx) {
2900            let dir_path = if entry.is_dir() {
2901                entry.path.clone()
2902            } else {
2903                // entry is a file, use its parent directory
2904                match entry.path.parent() {
2905                    Some(parent) => Arc::from(parent),
2906                    None => {
2907                        // File at root, open search with empty filter
2908                        self.workspace
2909                            .update(cx, |workspace, cx| {
2910                                search::ProjectSearchView::new_search_in_directory(
2911                                    workspace,
2912                                    RelPath::empty(),
2913                                    window,
2914                                    cx,
2915                                );
2916                            })
2917                            .ok();
2918                        return;
2919                    }
2920                }
2921            };
2922
2923            let include_root = self.project.read(cx).visible_worktrees(cx).count() > 1;
2924            let dir_path = if include_root {
2925                worktree.read(cx).root_name().join(&dir_path)
2926            } else {
2927                dir_path
2928            };
2929
2930            self.workspace
2931                .update(cx, |workspace, cx| {
2932                    search::ProjectSearchView::new_search_in_directory(
2933                        workspace, &dir_path, window, cx,
2934                    );
2935                })
2936                .ok();
2937        }
2938    }
2939
2940    fn move_entry(
2941        &mut self,
2942        entry_to_move: ProjectEntryId,
2943        destination: ProjectEntryId,
2944        destination_is_file: bool,
2945        cx: &mut Context<Self>,
2946    ) {
2947        if self
2948            .project
2949            .read(cx)
2950            .entry_is_worktree_root(entry_to_move, cx)
2951        {
2952            self.move_worktree_root(entry_to_move, destination, cx)
2953        } else {
2954            self.move_worktree_entry(entry_to_move, destination, destination_is_file, cx)
2955        }
2956    }
2957
2958    fn move_worktree_root(
2959        &mut self,
2960        entry_to_move: ProjectEntryId,
2961        destination: ProjectEntryId,
2962        cx: &mut Context<Self>,
2963    ) {
2964        self.project.update(cx, |project, cx| {
2965            let Some(worktree_to_move) = project.worktree_for_entry(entry_to_move, cx) else {
2966                return;
2967            };
2968            let Some(destination_worktree) = project.worktree_for_entry(destination, cx) else {
2969                return;
2970            };
2971
2972            let worktree_id = worktree_to_move.read(cx).id();
2973            let destination_id = destination_worktree.read(cx).id();
2974
2975            project
2976                .move_worktree(worktree_id, destination_id, cx)
2977                .log_err();
2978        });
2979    }
2980
2981    fn move_worktree_entry(
2982        &mut self,
2983        entry_to_move: ProjectEntryId,
2984        destination_entry: ProjectEntryId,
2985        destination_is_file: bool,
2986        cx: &mut Context<Self>,
2987    ) {
2988        if entry_to_move == destination_entry {
2989            return;
2990        }
2991
2992        let destination_worktree = self.project.update(cx, |project, cx| {
2993            let source_path = project.path_for_entry(entry_to_move, cx)?;
2994            let destination_path = project.path_for_entry(destination_entry, cx)?;
2995            let destination_worktree_id = destination_path.worktree_id;
2996
2997            let mut destination_path = destination_path.path.as_ref();
2998            if destination_is_file {
2999                destination_path = destination_path.parent()?;
3000            }
3001
3002            let mut new_path = destination_path.to_rel_path_buf();
3003            new_path.push(RelPath::unix(source_path.path.file_name()?).unwrap());
3004            if new_path.as_rel_path() != source_path.path.as_ref() {
3005                let task = project.rename_entry(
3006                    entry_to_move,
3007                    (destination_worktree_id, new_path).into(),
3008                    cx,
3009                );
3010                cx.foreground_executor().spawn(task).detach_and_log_err(cx);
3011            }
3012
3013            project.worktree_id_for_entry(destination_entry, cx)
3014        });
3015
3016        if let Some(destination_worktree) = destination_worktree {
3017            self.expand_entry(destination_worktree, destination_entry, cx);
3018        }
3019    }
3020
3021    fn index_for_selection(&self, selection: SelectedEntry) -> Option<(usize, usize, usize)> {
3022        self.index_for_entry(selection.entry_id, selection.worktree_id)
3023    }
3024
3025    fn disjoint_entries(&self, cx: &App) -> BTreeSet<SelectedEntry> {
3026        let marked_entries = self.effective_entries();
3027        let mut sanitized_entries = BTreeSet::new();
3028        if marked_entries.is_empty() {
3029            return sanitized_entries;
3030        }
3031
3032        let project = self.project.read(cx);
3033        let marked_entries_by_worktree: HashMap<WorktreeId, Vec<SelectedEntry>> = marked_entries
3034            .into_iter()
3035            .filter(|entry| !project.entry_is_worktree_root(entry.entry_id, cx))
3036            .fold(HashMap::default(), |mut map, entry| {
3037                map.entry(entry.worktree_id).or_default().push(entry);
3038                map
3039            });
3040
3041        for (worktree_id, marked_entries) in marked_entries_by_worktree {
3042            if let Some(worktree) = project.worktree_for_id(worktree_id, cx) {
3043                let worktree = worktree.read(cx);
3044                let marked_dir_paths = marked_entries
3045                    .iter()
3046                    .filter_map(|entry| {
3047                        worktree.entry_for_id(entry.entry_id).and_then(|entry| {
3048                            if entry.is_dir() {
3049                                Some(entry.path.as_ref())
3050                            } else {
3051                                None
3052                            }
3053                        })
3054                    })
3055                    .collect::<BTreeSet<_>>();
3056
3057                sanitized_entries.extend(marked_entries.into_iter().filter(|entry| {
3058                    let Some(entry_info) = worktree.entry_for_id(entry.entry_id) else {
3059                        return false;
3060                    };
3061                    let entry_path = entry_info.path.as_ref();
3062                    let inside_marked_dir = marked_dir_paths.iter().any(|&marked_dir_path| {
3063                        entry_path != marked_dir_path && entry_path.starts_with(marked_dir_path)
3064                    });
3065                    !inside_marked_dir
3066                }));
3067            }
3068        }
3069
3070        sanitized_entries
3071    }
3072
3073    fn effective_entries(&self) -> BTreeSet<SelectedEntry> {
3074        if let Some(selection) = self.state.selection {
3075            let selection = SelectedEntry {
3076                entry_id: self.resolve_entry(selection.entry_id),
3077                worktree_id: selection.worktree_id,
3078            };
3079
3080            // Default to using just the selected item when nothing is marked.
3081            if self.marked_entries.is_empty() {
3082                return BTreeSet::from([selection]);
3083            }
3084
3085            // Allow operating on the selected item even when something else is marked,
3086            // making it easier to perform one-off actions without clearing a mark.
3087            if self.marked_entries.len() == 1 && !self.marked_entries.contains(&selection) {
3088                return BTreeSet::from([selection]);
3089            }
3090        }
3091
3092        // Return only marked entries since we've already handled special cases where
3093        // only selection should take precedence. At this point, marked entries may or
3094        // may not include the current selection, which is intentional.
3095        self.marked_entries
3096            .iter()
3097            .map(|entry| SelectedEntry {
3098                entry_id: self.resolve_entry(entry.entry_id),
3099                worktree_id: entry.worktree_id,
3100            })
3101            .collect::<BTreeSet<_>>()
3102    }
3103
3104    /// Finds the currently selected subentry for a given leaf entry id. If a given entry
3105    /// has no ancestors, the project entry ID that's passed in is returned as-is.
3106    fn resolve_entry(&self, id: ProjectEntryId) -> ProjectEntryId {
3107        self.state
3108            .ancestors
3109            .get(&id)
3110            .and_then(|ancestors| ancestors.active_ancestor())
3111            .unwrap_or(id)
3112    }
3113
3114    pub fn selected_entry<'a>(&self, cx: &'a App) -> Option<(&'a Worktree, &'a project::Entry)> {
3115        let (worktree, entry) = self.selected_entry_handle(cx)?;
3116        Some((worktree.read(cx), entry))
3117    }
3118
3119    /// Compared to selected_entry, this function resolves to the currently
3120    /// selected subentry if dir auto-folding is enabled.
3121    fn selected_sub_entry<'a>(
3122        &self,
3123        cx: &'a App,
3124    ) -> Option<(Entity<Worktree>, &'a project::Entry)> {
3125        let (worktree, mut entry) = self.selected_entry_handle(cx)?;
3126
3127        let resolved_id = self.resolve_entry(entry.id);
3128        if resolved_id != entry.id {
3129            let worktree = worktree.read(cx);
3130            entry = worktree.entry_for_id(resolved_id)?;
3131        }
3132        Some((worktree, entry))
3133    }
3134    fn selected_entry_handle<'a>(
3135        &self,
3136        cx: &'a App,
3137    ) -> Option<(Entity<Worktree>, &'a project::Entry)> {
3138        let selection = self.state.selection?;
3139        let project = self.project.read(cx);
3140        let worktree = project.worktree_for_id(selection.worktree_id, cx)?;
3141        let entry = worktree.read(cx).entry_for_id(selection.entry_id)?;
3142        Some((worktree, entry))
3143    }
3144
3145    fn expand_to_selection(&mut self, cx: &mut Context<Self>) -> Option<()> {
3146        let (worktree, entry) = self.selected_entry(cx)?;
3147        let expanded_dir_ids = self
3148            .state
3149            .expanded_dir_ids
3150            .entry(worktree.id())
3151            .or_default();
3152
3153        for path in entry.path.ancestors() {
3154            let Some(entry) = worktree.entry_for_path(path) else {
3155                continue;
3156            };
3157            if entry.is_dir()
3158                && let Err(idx) = expanded_dir_ids.binary_search(&entry.id)
3159            {
3160                expanded_dir_ids.insert(idx, entry.id);
3161            }
3162        }
3163
3164        Some(())
3165    }
3166
3167    fn create_new_git_entry(
3168        parent_entry: &Entry,
3169        git_summary: GitSummary,
3170        new_entry_kind: EntryKind,
3171    ) -> GitEntry {
3172        GitEntry {
3173            entry: Entry {
3174                id: NEW_ENTRY_ID,
3175                kind: new_entry_kind,
3176                path: parent_entry.path.join(RelPath::unix("\0").unwrap()),
3177                inode: 0,
3178                mtime: parent_entry.mtime,
3179                size: parent_entry.size,
3180                is_ignored: parent_entry.is_ignored,
3181                is_hidden: parent_entry.is_hidden,
3182                is_external: false,
3183                is_private: false,
3184                is_always_included: parent_entry.is_always_included,
3185                canonical_path: parent_entry.canonical_path.clone(),
3186                char_bag: parent_entry.char_bag,
3187                is_fifo: parent_entry.is_fifo,
3188            },
3189            git_summary,
3190        }
3191    }
3192
3193    fn update_visible_entries(
3194        &mut self,
3195        new_selected_entry: Option<(WorktreeId, ProjectEntryId)>,
3196        focus_filename_editor: bool,
3197        autoscroll: bool,
3198        window: &mut Window,
3199        cx: &mut Context<Self>,
3200    ) {
3201        let now = Instant::now();
3202        let settings = ProjectPanelSettings::get_global(cx);
3203        let auto_collapse_dirs = settings.auto_fold_dirs;
3204        let hide_gitignore = settings.hide_gitignore;
3205        let project = self.project.read(cx);
3206        let repo_snapshots = project.git_store().read(cx).repo_snapshots(cx);
3207
3208        let old_ancestors = self.state.ancestors.clone();
3209        let mut new_state = State::derive(&self.state);
3210        new_state.last_worktree_root_id = project
3211            .visible_worktrees(cx)
3212            .next_back()
3213            .and_then(|worktree| worktree.read(cx).root_entry())
3214            .map(|entry| entry.id);
3215        let mut max_width_item = None;
3216
3217        let visible_worktrees: Vec<_> = project
3218            .visible_worktrees(cx)
3219            .map(|worktree| worktree.read(cx).snapshot())
3220            .collect();
3221        let hide_root = settings.hide_root && visible_worktrees.len() == 1;
3222        let hide_hidden = settings.hide_hidden;
3223        self.update_visible_entries_task = cx.spawn_in(window, async move |this, cx| {
3224            let new_state = cx
3225                .background_spawn(async move {
3226                    for worktree_snapshot in visible_worktrees {
3227                        let worktree_id = worktree_snapshot.id();
3228
3229                        let expanded_dir_ids = match new_state.expanded_dir_ids.entry(worktree_id) {
3230                            hash_map::Entry::Occupied(e) => e.into_mut(),
3231                            hash_map::Entry::Vacant(e) => {
3232                                // The first time a worktree's root entry becomes available,
3233                                // mark that root entry as expanded.
3234                                if let Some(entry) = worktree_snapshot.root_entry() {
3235                                    e.insert(vec![entry.id]).as_slice()
3236                                } else {
3237                                    &[]
3238                                }
3239                            }
3240                        };
3241
3242                        let mut new_entry_parent_id = None;
3243                        let mut new_entry_kind = EntryKind::Dir;
3244                        if let Some(edit_state) = &new_state.edit_state
3245                            && edit_state.worktree_id == worktree_id
3246                            && edit_state.is_new_entry()
3247                        {
3248                            new_entry_parent_id = Some(edit_state.entry_id);
3249                            new_entry_kind = if edit_state.is_dir {
3250                                EntryKind::Dir
3251                            } else {
3252                                EntryKind::File
3253                            };
3254                        }
3255
3256                        let mut visible_worktree_entries = Vec::new();
3257                        let mut entry_iter =
3258                            GitTraversal::new(&repo_snapshots, worktree_snapshot.entries(true, 0));
3259                        let mut auto_folded_ancestors = vec![];
3260                        let worktree_abs_path = worktree_snapshot.abs_path();
3261                        while let Some(entry) = entry_iter.entry() {
3262                            if hide_root && Some(entry.entry) == worktree_snapshot.root_entry() {
3263                                if new_entry_parent_id == Some(entry.id) {
3264                                    visible_worktree_entries.push(Self::create_new_git_entry(
3265                                        entry.entry,
3266                                        entry.git_summary,
3267                                        new_entry_kind,
3268                                    ));
3269                                    new_entry_parent_id = None;
3270                                }
3271                                entry_iter.advance();
3272                                continue;
3273                            }
3274                            if auto_collapse_dirs && entry.kind.is_dir() {
3275                                auto_folded_ancestors.push(entry.id);
3276                                if !new_state.unfolded_dir_ids.contains(&entry.id)
3277                                    && let Some(root_path) = worktree_snapshot.root_entry()
3278                                {
3279                                    let mut child_entries =
3280                                        worktree_snapshot.child_entries(&entry.path);
3281                                    if let Some(child) = child_entries.next()
3282                                        && entry.path != root_path.path
3283                                        && child_entries.next().is_none()
3284                                        && child.kind.is_dir()
3285                                    {
3286                                        entry_iter.advance();
3287
3288                                        continue;
3289                                    }
3290                                }
3291                                let depth = old_ancestors
3292                                    .get(&entry.id)
3293                                    .map(|ancestor| ancestor.current_ancestor_depth)
3294                                    .unwrap_or_default()
3295                                    .min(auto_folded_ancestors.len());
3296                                if let Some(edit_state) = &mut new_state.edit_state
3297                                    && edit_state.entry_id == entry.id
3298                                {
3299                                    edit_state.depth = depth;
3300                                }
3301                                let mut ancestors = std::mem::take(&mut auto_folded_ancestors);
3302                                if ancestors.len() > 1 {
3303                                    ancestors.reverse();
3304                                    new_state.ancestors.insert(
3305                                        entry.id,
3306                                        FoldedAncestors {
3307                                            current_ancestor_depth: depth,
3308                                            ancestors,
3309                                        },
3310                                    );
3311                                }
3312                            }
3313                            auto_folded_ancestors.clear();
3314                            if (!hide_gitignore || !entry.is_ignored)
3315                                && (!hide_hidden || !entry.is_hidden)
3316                            {
3317                                visible_worktree_entries.push(entry.to_owned());
3318                            }
3319                            let precedes_new_entry = if let Some(new_entry_id) = new_entry_parent_id
3320                            {
3321                                entry.id == new_entry_id || {
3322                                    new_state.ancestors.get(&entry.id).is_some_and(|entries| {
3323                                        entries.ancestors.contains(&new_entry_id)
3324                                    })
3325                                }
3326                            } else {
3327                                false
3328                            };
3329                            if precedes_new_entry
3330                                && (!hide_gitignore || !entry.is_ignored)
3331                                && (!hide_hidden || !entry.is_hidden)
3332                            {
3333                                visible_worktree_entries.push(Self::create_new_git_entry(
3334                                    entry.entry,
3335                                    entry.git_summary,
3336                                    new_entry_kind,
3337                                ));
3338                            }
3339
3340                            let (depth, chars) = if Some(entry.entry)
3341                                == worktree_snapshot.root_entry()
3342                            {
3343                                let Some(path_name) = worktree_abs_path.file_name() else {
3344                                    continue;
3345                                };
3346                                let depth = 0;
3347                                (depth, path_name.to_string_lossy().chars().count())
3348                            } else if entry.is_file() {
3349                                let Some(path_name) = entry
3350                                    .path
3351                                    .file_name()
3352                                    .with_context(|| {
3353                                        format!("Non-root entry has no file name: {entry:?}")
3354                                    })
3355                                    .log_err()
3356                                else {
3357                                    continue;
3358                                };
3359                                let depth = entry.path.ancestors().count() - 1;
3360                                (depth, path_name.chars().count())
3361                            } else {
3362                                let path = new_state
3363                                    .ancestors
3364                                    .get(&entry.id)
3365                                    .and_then(|ancestors| {
3366                                        let outermost_ancestor = ancestors.ancestors.last()?;
3367                                        let root_folded_entry = worktree_snapshot
3368                                            .entry_for_id(*outermost_ancestor)?
3369                                            .path
3370                                            .as_ref();
3371                                        entry.path.strip_prefix(root_folded_entry).ok().and_then(
3372                                            |suffix| {
3373                                                Some(
3374                                                    RelPath::unix(root_folded_entry.file_name()?)
3375                                                        .unwrap()
3376                                                        .join(suffix),
3377                                                )
3378                                            },
3379                                        )
3380                                    })
3381                                    .or_else(|| {
3382                                        entry.path.file_name().map(|file_name| {
3383                                            RelPath::unix(file_name).unwrap().into()
3384                                        })
3385                                    })
3386                                    .unwrap_or_else(|| entry.path.clone());
3387                                let depth = path.components().count();
3388                                (depth, path.as_unix_str().chars().count())
3389                            };
3390                            let width_estimate =
3391                                item_width_estimate(depth, chars, entry.canonical_path.is_some());
3392
3393                            match max_width_item.as_mut() {
3394                                Some((id, worktree_id, width)) => {
3395                                    if *width < width_estimate {
3396                                        *id = entry.id;
3397                                        *worktree_id = worktree_snapshot.id();
3398                                        *width = width_estimate;
3399                                    }
3400                                }
3401                                None => {
3402                                    max_width_item =
3403                                        Some((entry.id, worktree_snapshot.id(), width_estimate))
3404                                }
3405                            }
3406
3407                            if expanded_dir_ids.binary_search(&entry.id).is_err()
3408                                && entry_iter.advance_to_sibling()
3409                            {
3410                                continue;
3411                            }
3412                            entry_iter.advance();
3413                        }
3414
3415                        par_sort_worktree_entries(&mut visible_worktree_entries);
3416                        new_state.visible_entries.push(VisibleEntriesForWorktree {
3417                            worktree_id,
3418                            entries: visible_worktree_entries,
3419                            index: OnceCell::new(),
3420                        })
3421                    }
3422                    if let Some((project_entry_id, worktree_id, _)) = max_width_item {
3423                        let mut visited_worktrees_length = 0;
3424                        let index = new_state
3425                            .visible_entries
3426                            .iter()
3427                            .find_map(|visible_entries| {
3428                                if worktree_id == visible_entries.worktree_id {
3429                                    visible_entries
3430                                        .entries
3431                                        .iter()
3432                                        .position(|entry| entry.id == project_entry_id)
3433                                } else {
3434                                    visited_worktrees_length += visible_entries.entries.len();
3435                                    None
3436                                }
3437                            });
3438                        if let Some(index) = index {
3439                            new_state.max_width_item_index = Some(visited_worktrees_length + index);
3440                        }
3441                    }
3442                    new_state
3443                })
3444                .await;
3445            this.update_in(cx, |this, window, cx| {
3446                let current_selection = this.state.selection;
3447                this.state = new_state;
3448                if let Some((worktree_id, entry_id)) = new_selected_entry {
3449                    this.state.selection = Some(SelectedEntry {
3450                        worktree_id,
3451                        entry_id,
3452                    });
3453                } else {
3454                    this.state.selection = current_selection;
3455                }
3456                let elapsed = now.elapsed();
3457                if this.last_reported_update.elapsed() > Duration::from_secs(3600) {
3458                    telemetry::event!(
3459                        "Project Panel Updated",
3460                        elapsed_ms = elapsed.as_millis() as u64,
3461                        worktree_entries = this
3462                            .state
3463                            .visible_entries
3464                            .iter()
3465                            .map(|worktree| worktree.entries.len())
3466                            .sum::<usize>(),
3467                    )
3468                }
3469                if focus_filename_editor {
3470                    this.filename_editor.update(cx, |editor, cx| {
3471                        editor.clear(window, cx);
3472                        window.focus(&editor.focus_handle(cx));
3473                    });
3474                }
3475                if autoscroll {
3476                    this.autoscroll(cx);
3477                }
3478                cx.notify();
3479            })
3480            .ok();
3481        });
3482    }
3483
3484    fn expand_entry(
3485        &mut self,
3486        worktree_id: WorktreeId,
3487        entry_id: ProjectEntryId,
3488        cx: &mut Context<Self>,
3489    ) {
3490        self.project.update(cx, |project, cx| {
3491            if let Some((worktree, expanded_dir_ids)) = project
3492                .worktree_for_id(worktree_id, cx)
3493                .zip(self.state.expanded_dir_ids.get_mut(&worktree_id))
3494            {
3495                project.expand_entry(worktree_id, entry_id, cx);
3496                let worktree = worktree.read(cx);
3497
3498                if let Some(mut entry) = worktree.entry_for_id(entry_id) {
3499                    loop {
3500                        if let Err(ix) = expanded_dir_ids.binary_search(&entry.id) {
3501                            expanded_dir_ids.insert(ix, entry.id);
3502                        }
3503
3504                        if let Some(parent_entry) =
3505                            entry.path.parent().and_then(|p| worktree.entry_for_path(p))
3506                        {
3507                            entry = parent_entry;
3508                        } else {
3509                            break;
3510                        }
3511                    }
3512                }
3513            }
3514        });
3515    }
3516
3517    fn drop_external_files(
3518        &mut self,
3519        paths: &[PathBuf],
3520        entry_id: ProjectEntryId,
3521        window: &mut Window,
3522        cx: &mut Context<Self>,
3523    ) {
3524        let mut paths: Vec<Arc<Path>> = paths.iter().map(|path| Arc::from(path.clone())).collect();
3525
3526        let open_file_after_drop = paths.len() == 1 && paths[0].is_file();
3527
3528        let Some((target_directory, worktree, fs)) = maybe!({
3529            let project = self.project.read(cx);
3530            let fs = project.fs().clone();
3531            let worktree = project.worktree_for_entry(entry_id, cx)?;
3532            let entry = worktree.read(cx).entry_for_id(entry_id)?;
3533            let path = entry.path.clone();
3534            let target_directory = if entry.is_dir() {
3535                path
3536            } else {
3537                path.parent()?.into()
3538            };
3539            Some((target_directory, worktree, fs))
3540        }) else {
3541            return;
3542        };
3543
3544        let mut paths_to_replace = Vec::new();
3545        for path in &paths {
3546            if let Some(name) = path.file_name()
3547                && let Some(name) = name.to_str()
3548            {
3549                let target_path = target_directory.join(RelPath::unix(name).unwrap());
3550                if worktree.read(cx).entry_for_path(&target_path).is_some() {
3551                    paths_to_replace.push((name.to_string(), path.clone()));
3552                }
3553            }
3554        }
3555
3556        cx.spawn_in(window, async move |this, cx| {
3557            async move {
3558                for (filename, original_path) in &paths_to_replace {
3559                    let answer = cx.update(|window, cx| {
3560                        window
3561                            .prompt(
3562                                PromptLevel::Info,
3563                                format!("A file or folder with name {filename} already exists in the destination folder. Do you want to replace it?").as_str(),
3564                                None,
3565                                &["Replace", "Cancel"],
3566                                cx,
3567                            )
3568                    })?.await?;
3569
3570                    if answer == 1
3571                        && let Some(item_idx) = paths.iter().position(|p| p == original_path) {
3572                            paths.remove(item_idx);
3573                        }
3574                }
3575
3576                if paths.is_empty() {
3577                    return Ok(());
3578                }
3579
3580                let task = worktree.update( cx, |worktree, cx| {
3581                    worktree.copy_external_entries(target_directory, paths, fs, cx)
3582                })?;
3583
3584                let opened_entries = task.await.with_context(|| "failed to copy external paths")?;
3585                this.update(cx, |this, cx| {
3586                    if open_file_after_drop && !opened_entries.is_empty() {
3587                        this.open_entry(opened_entries[0], true, false, cx);
3588                    }
3589                })
3590            }
3591            .log_err().await
3592        })
3593        .detach();
3594    }
3595
3596    fn refresh_drag_cursor_style(
3597        &self,
3598        modifiers: &Modifiers,
3599        window: &mut Window,
3600        cx: &mut Context<Self>,
3601    ) {
3602        if let Some(existing_cursor) = cx.active_drag_cursor_style() {
3603            let new_cursor = if Self::is_copy_modifier_set(modifiers) {
3604                CursorStyle::DragCopy
3605            } else {
3606                CursorStyle::PointingHand
3607            };
3608            if existing_cursor != new_cursor {
3609                cx.set_active_drag_cursor_style(new_cursor, window);
3610            }
3611        }
3612    }
3613
3614    fn is_copy_modifier_set(modifiers: &Modifiers) -> bool {
3615        cfg!(target_os = "macos") && modifiers.alt
3616            || cfg!(not(target_os = "macos")) && modifiers.control
3617    }
3618
3619    fn drag_onto(
3620        &mut self,
3621        selections: &DraggedSelection,
3622        target_entry_id: ProjectEntryId,
3623        is_file: bool,
3624        window: &mut Window,
3625        cx: &mut Context<Self>,
3626    ) {
3627        if Self::is_copy_modifier_set(&window.modifiers()) {
3628            let _ = maybe!({
3629                let project = self.project.read(cx);
3630                let target_worktree = project.worktree_for_entry(target_entry_id, cx)?;
3631                let worktree_id = target_worktree.read(cx).id();
3632                let target_entry = target_worktree
3633                    .read(cx)
3634                    .entry_for_id(target_entry_id)?
3635                    .clone();
3636
3637                let mut copy_tasks = Vec::new();
3638                let mut disambiguation_range = None;
3639                for selection in selections.items() {
3640                    let (new_path, new_disambiguation_range) = self.create_paste_path(
3641                        selection,
3642                        (target_worktree.clone(), &target_entry),
3643                        cx,
3644                    )?;
3645
3646                    let task = self.project.update(cx, |project, cx| {
3647                        project.copy_entry(selection.entry_id, (worktree_id, new_path).into(), cx)
3648                    });
3649                    copy_tasks.push(task);
3650                    disambiguation_range = new_disambiguation_range.or(disambiguation_range);
3651                }
3652
3653                let item_count = copy_tasks.len();
3654
3655                cx.spawn_in(window, async move |project_panel, cx| {
3656                    let mut last_succeed = None;
3657                    for task in copy_tasks.into_iter() {
3658                        if let Some(Some(entry)) = task.await.log_err() {
3659                            last_succeed = Some(entry.id);
3660                        }
3661                    }
3662                    // update selection
3663                    if let Some(entry_id) = last_succeed {
3664                        project_panel
3665                            .update_in(cx, |project_panel, window, cx| {
3666                                project_panel.state.selection = Some(SelectedEntry {
3667                                    worktree_id,
3668                                    entry_id,
3669                                });
3670
3671                                // if only one entry was dragged and it was disambiguated, open the rename editor
3672                                if item_count == 1 && disambiguation_range.is_some() {
3673                                    project_panel.rename_impl(disambiguation_range, window, cx);
3674                                }
3675                            })
3676                            .ok();
3677                    }
3678                })
3679                .detach();
3680                Some(())
3681            });
3682        } else {
3683            for selection in selections.items() {
3684                self.move_entry(selection.entry_id, target_entry_id, is_file, cx);
3685            }
3686        }
3687    }
3688
3689    fn index_for_entry(
3690        &self,
3691        entry_id: ProjectEntryId,
3692        worktree_id: WorktreeId,
3693    ) -> Option<(usize, usize, usize)> {
3694        let mut total_ix = 0;
3695        for (worktree_ix, visible) in self.state.visible_entries.iter().enumerate() {
3696            if worktree_id != visible.worktree_id {
3697                total_ix += visible.entries.len();
3698                continue;
3699            }
3700
3701            return visible
3702                .entries
3703                .iter()
3704                .enumerate()
3705                .find(|(_, entry)| entry.id == entry_id)
3706                .map(|(ix, _)| (worktree_ix, ix, total_ix + ix));
3707        }
3708        None
3709    }
3710
3711    fn entry_at_index(&self, index: usize) -> Option<(WorktreeId, GitEntryRef<'_>)> {
3712        let mut offset = 0;
3713        for worktree in &self.state.visible_entries {
3714            let current_len = worktree.entries.len();
3715            if index < offset + current_len {
3716                return worktree
3717                    .entries
3718                    .get(index - offset)
3719                    .map(|entry| (worktree.worktree_id, entry.to_ref()));
3720            }
3721            offset += current_len;
3722        }
3723        None
3724    }
3725
3726    fn iter_visible_entries(
3727        &self,
3728        range: Range<usize>,
3729        window: &mut Window,
3730        cx: &mut Context<ProjectPanel>,
3731        mut callback: impl FnMut(
3732            &Entry,
3733            usize,
3734            &HashSet<Arc<RelPath>>,
3735            &mut Window,
3736            &mut Context<ProjectPanel>,
3737        ),
3738    ) {
3739        let mut ix = 0;
3740        for visible in &self.state.visible_entries {
3741            if ix >= range.end {
3742                return;
3743            }
3744
3745            if ix + visible.entries.len() <= range.start {
3746                ix += visible.entries.len();
3747                continue;
3748            }
3749
3750            let end_ix = range.end.min(ix + visible.entries.len());
3751            let entry_range = range.start.saturating_sub(ix)..end_ix - ix;
3752            let entries = visible
3753                .index
3754                .get_or_init(|| visible.entries.iter().map(|e| e.path.clone()).collect());
3755            let base_index = ix + entry_range.start;
3756            for (i, entry) in visible.entries[entry_range].iter().enumerate() {
3757                let global_index = base_index + i;
3758                callback(entry, global_index, entries, window, cx);
3759            }
3760            ix = end_ix;
3761        }
3762    }
3763
3764    fn for_each_visible_entry(
3765        &self,
3766        range: Range<usize>,
3767        window: &mut Window,
3768        cx: &mut Context<ProjectPanel>,
3769        mut callback: impl FnMut(ProjectEntryId, EntryDetails, &mut Window, &mut Context<ProjectPanel>),
3770    ) {
3771        let mut ix = 0;
3772        for visible in &self.state.visible_entries {
3773            if ix >= range.end {
3774                return;
3775            }
3776
3777            if ix + visible.entries.len() <= range.start {
3778                ix += visible.entries.len();
3779                continue;
3780            }
3781
3782            let end_ix = range.end.min(ix + visible.entries.len());
3783            let git_status_setting = {
3784                let settings = ProjectPanelSettings::get_global(cx);
3785                settings.git_status
3786            };
3787            if let Some(worktree) = self
3788                .project
3789                .read(cx)
3790                .worktree_for_id(visible.worktree_id, cx)
3791            {
3792                let snapshot = worktree.read(cx).snapshot();
3793                let root_name = snapshot.root_name();
3794
3795                let entry_range = range.start.saturating_sub(ix)..end_ix - ix;
3796                let entries = visible
3797                    .index
3798                    .get_or_init(|| visible.entries.iter().map(|e| e.path.clone()).collect());
3799                for entry in visible.entries[entry_range].iter() {
3800                    let status = git_status_setting
3801                        .then_some(entry.git_summary)
3802                        .unwrap_or_default();
3803
3804                    let mut details = self.details_for_entry(
3805                        entry,
3806                        visible.worktree_id,
3807                        root_name,
3808                        entries,
3809                        status,
3810                        None,
3811                        window,
3812                        cx,
3813                    );
3814
3815                    if let Some(edit_state) = &self.state.edit_state {
3816                        let is_edited_entry = if edit_state.is_new_entry() {
3817                            entry.id == NEW_ENTRY_ID
3818                        } else {
3819                            entry.id == edit_state.entry_id
3820                                || self.state.ancestors.get(&entry.id).is_some_and(
3821                                    |auto_folded_dirs| {
3822                                        auto_folded_dirs.ancestors.contains(&edit_state.entry_id)
3823                                    },
3824                                )
3825                        };
3826
3827                        if is_edited_entry {
3828                            if let Some(processing_filename) = &edit_state.processing_filename {
3829                                details.is_processing = true;
3830                                if let Some(ancestors) = edit_state
3831                                    .leaf_entry_id
3832                                    .and_then(|entry| self.state.ancestors.get(&entry))
3833                                {
3834                                    let position = ancestors.ancestors.iter().position(|entry_id| *entry_id == edit_state.entry_id).expect("Edited sub-entry should be an ancestor of selected leaf entry") + 1;
3835                                    let all_components = ancestors.ancestors.len();
3836
3837                                    let prefix_components = all_components - position;
3838                                    let suffix_components = position.checked_sub(1);
3839                                    let mut previous_components =
3840                                        Path::new(&details.filename).components();
3841                                    let mut new_path = previous_components
3842                                        .by_ref()
3843                                        .take(prefix_components)
3844                                        .collect::<PathBuf>();
3845                                    if let Some(last_component) =
3846                                        processing_filename.components().next_back()
3847                                    {
3848                                        new_path.push(last_component);
3849                                        previous_components.next();
3850                                    }
3851
3852                                    if suffix_components.is_some() {
3853                                        new_path.push(previous_components);
3854                                    }
3855                                    if let Some(str) = new_path.to_str() {
3856                                        details.filename.clear();
3857                                        details.filename.push_str(str);
3858                                    }
3859                                } else {
3860                                    details.filename.clear();
3861                                    details.filename.push_str(processing_filename.as_unix_str());
3862                                }
3863                            } else {
3864                                if edit_state.is_new_entry() {
3865                                    details.filename.clear();
3866                                }
3867                                details.is_editing = true;
3868                            }
3869                        }
3870                    }
3871
3872                    callback(entry.id, details, window, cx);
3873                }
3874            }
3875            ix = end_ix;
3876        }
3877    }
3878
3879    fn find_entry_in_worktree(
3880        &self,
3881        worktree_id: WorktreeId,
3882        reverse_search: bool,
3883        only_visible_entries: bool,
3884        predicate: impl Fn(GitEntryRef, WorktreeId) -> bool,
3885        cx: &mut Context<Self>,
3886    ) -> Option<GitEntry> {
3887        if only_visible_entries {
3888            let entries = self
3889                .state
3890                .visible_entries
3891                .iter()
3892                .find_map(|visible| {
3893                    if worktree_id == visible.worktree_id {
3894                        Some(&visible.entries)
3895                    } else {
3896                        None
3897                    }
3898                })?
3899                .clone();
3900
3901            return utils::ReversibleIterable::new(entries.iter(), reverse_search)
3902                .find(|ele| predicate(ele.to_ref(), worktree_id))
3903                .cloned();
3904        }
3905
3906        let repo_snapshots = self
3907            .project
3908            .read(cx)
3909            .git_store()
3910            .read(cx)
3911            .repo_snapshots(cx);
3912        let worktree = self.project.read(cx).worktree_for_id(worktree_id, cx)?;
3913        worktree.read_with(cx, |tree, _| {
3914            utils::ReversibleIterable::new(
3915                GitTraversal::new(&repo_snapshots, tree.entries(true, 0usize)),
3916                reverse_search,
3917            )
3918            .find_single_ended(|ele| predicate(*ele, worktree_id))
3919            .map(|ele| ele.to_owned())
3920        })
3921    }
3922
3923    fn find_entry(
3924        &self,
3925        start: Option<&SelectedEntry>,
3926        reverse_search: bool,
3927        predicate: impl Fn(GitEntryRef, WorktreeId) -> bool,
3928        cx: &mut Context<Self>,
3929    ) -> Option<SelectedEntry> {
3930        let mut worktree_ids: Vec<_> = self
3931            .state
3932            .visible_entries
3933            .iter()
3934            .map(|worktree| worktree.worktree_id)
3935            .collect();
3936        let repo_snapshots = self
3937            .project
3938            .read(cx)
3939            .git_store()
3940            .read(cx)
3941            .repo_snapshots(cx);
3942
3943        let mut last_found: Option<SelectedEntry> = None;
3944
3945        if let Some(start) = start {
3946            let worktree = self
3947                .project
3948                .read(cx)
3949                .worktree_for_id(start.worktree_id, cx)?
3950                .read(cx);
3951
3952            let search = {
3953                let entry = worktree.entry_for_id(start.entry_id)?;
3954                let root_entry = worktree.root_entry()?;
3955                let tree_id = worktree.id();
3956
3957                let mut first_iter = GitTraversal::new(
3958                    &repo_snapshots,
3959                    worktree.traverse_from_path(true, true, true, entry.path.as_ref()),
3960                );
3961
3962                if reverse_search {
3963                    first_iter.next();
3964                }
3965
3966                let first = first_iter
3967                    .enumerate()
3968                    .take_until(|(count, entry)| entry.entry == root_entry && *count != 0usize)
3969                    .map(|(_, entry)| entry)
3970                    .find(|ele| predicate(*ele, tree_id))
3971                    .map(|ele| ele.to_owned());
3972
3973                let second_iter =
3974                    GitTraversal::new(&repo_snapshots, worktree.entries(true, 0usize));
3975
3976                let second = if reverse_search {
3977                    second_iter
3978                        .take_until(|ele| ele.id == start.entry_id)
3979                        .filter(|ele| predicate(*ele, tree_id))
3980                        .last()
3981                        .map(|ele| ele.to_owned())
3982                } else {
3983                    second_iter
3984                        .take_while(|ele| ele.id != start.entry_id)
3985                        .filter(|ele| predicate(*ele, tree_id))
3986                        .last()
3987                        .map(|ele| ele.to_owned())
3988                };
3989
3990                if reverse_search {
3991                    Some((second, first))
3992                } else {
3993                    Some((first, second))
3994                }
3995            };
3996
3997            if let Some((first, second)) = search {
3998                let first = first.map(|entry| SelectedEntry {
3999                    worktree_id: start.worktree_id,
4000                    entry_id: entry.id,
4001                });
4002
4003                let second = second.map(|entry| SelectedEntry {
4004                    worktree_id: start.worktree_id,
4005                    entry_id: entry.id,
4006                });
4007
4008                if first.is_some() {
4009                    return first;
4010                }
4011                last_found = second;
4012
4013                let idx = worktree_ids
4014                    .iter()
4015                    .enumerate()
4016                    .find(|(_, ele)| **ele == start.worktree_id)
4017                    .map(|(idx, _)| idx);
4018
4019                if let Some(idx) = idx {
4020                    worktree_ids.rotate_left(idx + 1usize);
4021                    worktree_ids.pop();
4022                }
4023            }
4024        }
4025
4026        for tree_id in worktree_ids.into_iter() {
4027            if let Some(found) =
4028                self.find_entry_in_worktree(tree_id, reverse_search, false, &predicate, cx)
4029            {
4030                return Some(SelectedEntry {
4031                    worktree_id: tree_id,
4032                    entry_id: found.id,
4033                });
4034            }
4035        }
4036
4037        last_found
4038    }
4039
4040    fn find_visible_entry(
4041        &self,
4042        start: Option<&SelectedEntry>,
4043        reverse_search: bool,
4044        predicate: impl Fn(GitEntryRef, WorktreeId) -> bool,
4045        cx: &mut Context<Self>,
4046    ) -> Option<SelectedEntry> {
4047        let mut worktree_ids: Vec<_> = self
4048            .state
4049            .visible_entries
4050            .iter()
4051            .map(|worktree| worktree.worktree_id)
4052            .collect();
4053
4054        let mut last_found: Option<SelectedEntry> = None;
4055
4056        if let Some(start) = start {
4057            let entries = self
4058                .state
4059                .visible_entries
4060                .iter()
4061                .find(|worktree| worktree.worktree_id == start.worktree_id)
4062                .map(|worktree| &worktree.entries)?;
4063
4064            let mut start_idx = entries
4065                .iter()
4066                .enumerate()
4067                .find(|(_, ele)| ele.id == start.entry_id)
4068                .map(|(idx, _)| idx)?;
4069
4070            if reverse_search {
4071                start_idx = start_idx.saturating_add(1usize);
4072            }
4073
4074            let (left, right) = entries.split_at_checked(start_idx)?;
4075
4076            let (first_iter, second_iter) = if reverse_search {
4077                (
4078                    utils::ReversibleIterable::new(left.iter(), reverse_search),
4079                    utils::ReversibleIterable::new(right.iter(), reverse_search),
4080                )
4081            } else {
4082                (
4083                    utils::ReversibleIterable::new(right.iter(), reverse_search),
4084                    utils::ReversibleIterable::new(left.iter(), reverse_search),
4085                )
4086            };
4087
4088            let first_search = first_iter.find(|ele| predicate(ele.to_ref(), start.worktree_id));
4089            let second_search = second_iter.find(|ele| predicate(ele.to_ref(), start.worktree_id));
4090
4091            if first_search.is_some() {
4092                return first_search.map(|entry| SelectedEntry {
4093                    worktree_id: start.worktree_id,
4094                    entry_id: entry.id,
4095                });
4096            }
4097
4098            last_found = second_search.map(|entry| SelectedEntry {
4099                worktree_id: start.worktree_id,
4100                entry_id: entry.id,
4101            });
4102
4103            let idx = worktree_ids
4104                .iter()
4105                .enumerate()
4106                .find(|(_, ele)| **ele == start.worktree_id)
4107                .map(|(idx, _)| idx);
4108
4109            if let Some(idx) = idx {
4110                worktree_ids.rotate_left(idx + 1usize);
4111                worktree_ids.pop();
4112            }
4113        }
4114
4115        for tree_id in worktree_ids.into_iter() {
4116            if let Some(found) =
4117                self.find_entry_in_worktree(tree_id, reverse_search, true, &predicate, cx)
4118            {
4119                return Some(SelectedEntry {
4120                    worktree_id: tree_id,
4121                    entry_id: found.id,
4122                });
4123            }
4124        }
4125
4126        last_found
4127    }
4128
4129    fn calculate_depth_and_difference(
4130        entry: &Entry,
4131        visible_worktree_entries: &HashSet<Arc<RelPath>>,
4132    ) -> (usize, usize) {
4133        let (depth, difference) = entry
4134            .path
4135            .ancestors()
4136            .skip(1) // Skip the entry itself
4137            .find_map(|ancestor| {
4138                if let Some(parent_entry) = visible_worktree_entries.get(ancestor) {
4139                    let entry_path_components_count = entry.path.components().count();
4140                    let parent_path_components_count = parent_entry.components().count();
4141                    let difference = entry_path_components_count - parent_path_components_count;
4142                    let depth = parent_entry
4143                        .ancestors()
4144                        .skip(1)
4145                        .filter(|ancestor| visible_worktree_entries.contains(*ancestor))
4146                        .count();
4147                    Some((depth + 1, difference))
4148                } else {
4149                    None
4150                }
4151            })
4152            .unwrap_or_else(|| (0, entry.path.components().count()));
4153
4154        (depth, difference)
4155    }
4156
4157    fn highlight_entry_for_external_drag(
4158        &self,
4159        target_entry: &Entry,
4160        target_worktree: &Worktree,
4161    ) -> Option<ProjectEntryId> {
4162        // Always highlight directory or parent directory if it's file
4163        if target_entry.is_dir() {
4164            Some(target_entry.id)
4165        } else {
4166            target_entry
4167                .path
4168                .parent()
4169                .and_then(|parent_path| target_worktree.entry_for_path(parent_path))
4170                .map(|parent_entry| parent_entry.id)
4171        }
4172    }
4173
4174    fn highlight_entry_for_selection_drag(
4175        &self,
4176        target_entry: &Entry,
4177        target_worktree: &Worktree,
4178        drag_state: &DraggedSelection,
4179        cx: &Context<Self>,
4180    ) -> Option<ProjectEntryId> {
4181        let target_parent_path = target_entry.path.parent();
4182
4183        // In case of single item drag, we do not highlight existing
4184        // directory which item belongs too
4185        if drag_state.items().count() == 1
4186            && drag_state.active_selection.worktree_id == target_worktree.id()
4187        {
4188            let active_entry_path = self
4189                .project
4190                .read(cx)
4191                .path_for_entry(drag_state.active_selection.entry_id, cx)?;
4192
4193            if let Some(active_parent_path) = active_entry_path.path.parent() {
4194                // Do not highlight active entry parent
4195                if active_parent_path == target_entry.path.as_ref() {
4196                    return None;
4197                }
4198
4199                // Do not highlight active entry sibling files
4200                if Some(active_parent_path) == target_parent_path && target_entry.is_file() {
4201                    return None;
4202                }
4203            }
4204        }
4205
4206        // Always highlight directory or parent directory if it's file
4207        if target_entry.is_dir() {
4208            Some(target_entry.id)
4209        } else {
4210            target_parent_path
4211                .and_then(|parent_path| target_worktree.entry_for_path(parent_path))
4212                .map(|parent_entry| parent_entry.id)
4213        }
4214    }
4215
4216    fn should_highlight_background_for_selection_drag(
4217        &self,
4218        drag_state: &DraggedSelection,
4219        last_root_id: ProjectEntryId,
4220        cx: &App,
4221    ) -> bool {
4222        // Always highlight for multiple entries
4223        if drag_state.items().count() > 1 {
4224            return true;
4225        }
4226
4227        // Since root will always have empty relative path
4228        if let Some(entry_path) = self
4229            .project
4230            .read(cx)
4231            .path_for_entry(drag_state.active_selection.entry_id, cx)
4232        {
4233            if let Some(parent_path) = entry_path.path.parent() {
4234                if !parent_path.is_empty() {
4235                    return true;
4236                }
4237            }
4238        }
4239
4240        // If parent is empty, check if different worktree
4241        if let Some(last_root_worktree_id) = self
4242            .project
4243            .read(cx)
4244            .worktree_id_for_entry(last_root_id, cx)
4245        {
4246            if drag_state.active_selection.worktree_id != last_root_worktree_id {
4247                return true;
4248            }
4249        }
4250
4251        false
4252    }
4253
4254    fn render_entry(
4255        &self,
4256        entry_id: ProjectEntryId,
4257        details: EntryDetails,
4258        window: &mut Window,
4259        cx: &mut Context<Self>,
4260    ) -> Stateful<Div> {
4261        const GROUP_NAME: &str = "project_entry";
4262
4263        let kind = details.kind;
4264        let is_sticky = details.sticky.is_some();
4265        let sticky_index = details.sticky.as_ref().map(|this| this.sticky_index);
4266        let settings = ProjectPanelSettings::get_global(cx);
4267        let show_editor = details.is_editing && !details.is_processing;
4268
4269        let selection = SelectedEntry {
4270            worktree_id: details.worktree_id,
4271            entry_id,
4272        };
4273
4274        let is_marked = self.marked_entries.contains(&selection);
4275        let is_active = self
4276            .state
4277            .selection
4278            .is_some_and(|selection| selection.entry_id == entry_id);
4279
4280        let file_name = details.filename.clone();
4281
4282        let mut icon = details.icon.clone();
4283        if settings.file_icons && show_editor && details.kind.is_file() {
4284            let filename = self.filename_editor.read(cx).text(cx);
4285            if filename.len() > 2 {
4286                icon = FileIcons::get_icon(Path::new(&filename), cx);
4287            }
4288        }
4289
4290        let filename_text_color = details.filename_text_color;
4291        let diagnostic_severity = details.diagnostic_severity;
4292        let item_colors = get_item_color(is_sticky, cx);
4293
4294        let canonical_path = details
4295            .canonical_path
4296            .as_ref()
4297            .map(|f| f.to_string_lossy().into_owned());
4298        let path_style = self.project.read(cx).path_style(cx);
4299        let path = details.path.clone();
4300        let path_for_external_paths = path.clone();
4301        let path_for_dragged_selection = path.clone();
4302
4303        let depth = details.depth;
4304        let worktree_id = details.worktree_id;
4305        let dragged_selection = DraggedSelection {
4306            active_selection: SelectedEntry {
4307                worktree_id: selection.worktree_id,
4308                entry_id: self.resolve_entry(selection.entry_id),
4309            },
4310            marked_selections: Arc::from(self.marked_entries.clone()),
4311        };
4312
4313        let bg_color = if is_marked {
4314            item_colors.marked
4315        } else {
4316            item_colors.default
4317        };
4318
4319        let bg_hover_color = if is_marked {
4320            item_colors.marked
4321        } else {
4322            item_colors.hover
4323        };
4324
4325        let validation_color_and_message = if show_editor {
4326            match self
4327                .state
4328                .edit_state
4329                .as_ref()
4330                .map_or(ValidationState::None, |e| e.validation_state.clone())
4331            {
4332                ValidationState::Error(msg) => Some((Color::Error.color(cx), msg)),
4333                ValidationState::Warning(msg) => Some((Color::Warning.color(cx), msg)),
4334                ValidationState::None => None,
4335            }
4336        } else {
4337            None
4338        };
4339
4340        let border_color =
4341            if !self.mouse_down && is_active && self.focus_handle.contains_focused(window, cx) {
4342                match validation_color_and_message {
4343                    Some((color, _)) => color,
4344                    None => item_colors.focused,
4345                }
4346            } else {
4347                bg_color
4348            };
4349
4350        let border_hover_color =
4351            if !self.mouse_down && is_active && self.focus_handle.contains_focused(window, cx) {
4352                match validation_color_and_message {
4353                    Some((color, _)) => color,
4354                    None => item_colors.focused,
4355                }
4356            } else {
4357                bg_hover_color
4358            };
4359
4360        let folded_directory_drag_target = self.folded_directory_drag_target;
4361        let is_highlighted = {
4362            if let Some(highlight_entry_id) =
4363                self.drag_target_entry
4364                    .as_ref()
4365                    .and_then(|drag_target| match drag_target {
4366                        DragTarget::Entry {
4367                            highlight_entry_id, ..
4368                        } => Some(*highlight_entry_id),
4369                        DragTarget::Background => self.state.last_worktree_root_id,
4370                    })
4371            {
4372                // Highlight if same entry or it's children
4373                if entry_id == highlight_entry_id {
4374                    true
4375                } else {
4376                    maybe!({
4377                        let worktree = self.project.read(cx).worktree_for_id(worktree_id, cx)?;
4378                        let highlight_entry = worktree.read(cx).entry_for_id(highlight_entry_id)?;
4379                        Some(path.starts_with(&highlight_entry.path))
4380                    })
4381                    .unwrap_or(false)
4382                }
4383            } else {
4384                false
4385            }
4386        };
4387
4388        let id: ElementId = if is_sticky {
4389            SharedString::from(format!("project_panel_sticky_item_{}", entry_id.to_usize())).into()
4390        } else {
4391            (entry_id.to_proto() as usize).into()
4392        };
4393
4394        div()
4395            .id(id.clone())
4396            .relative()
4397            .group(GROUP_NAME)
4398            .cursor_pointer()
4399            .rounded_none()
4400            .bg(bg_color)
4401            .border_1()
4402            .border_r_2()
4403            .border_color(border_color)
4404            .hover(|style| style.bg(bg_hover_color).border_color(border_hover_color))
4405            .when(is_sticky, |this| {
4406                this.block_mouse_except_scroll()
4407            })
4408            .when(!is_sticky, |this| {
4409                this
4410                .when(is_highlighted && folded_directory_drag_target.is_none(), |this| this.border_color(transparent_white()).bg(item_colors.drag_over))
4411                .when(settings.drag_and_drop, |this| this
4412                .on_drag_move::<ExternalPaths>(cx.listener(
4413                    move |this, event: &DragMoveEvent<ExternalPaths>, _, cx| {
4414                        let is_current_target = this.drag_target_entry.as_ref()
4415                             .and_then(|entry| match entry {
4416                                 DragTarget::Entry { entry_id: target_id, .. } => Some(*target_id),
4417                                 DragTarget::Background { .. } => None,
4418                             }) == Some(entry_id);
4419
4420                        if !event.bounds.contains(&event.event.position) {
4421                            // Entry responsible for setting drag target is also responsible to
4422                            // clear it up after drag is out of bounds
4423                            if is_current_target {
4424                                this.drag_target_entry = None;
4425                            }
4426                            return;
4427                        }
4428
4429                        if is_current_target {
4430                            return;
4431                        }
4432
4433                        this.marked_entries.clear();
4434
4435                        let Some((entry_id, highlight_entry_id)) = maybe!({
4436                            let target_worktree = this.project.read(cx).worktree_for_id(selection.worktree_id, cx)?.read(cx);
4437                            let target_entry = target_worktree.entry_for_path(&path_for_external_paths)?;
4438                            let highlight_entry_id = this.highlight_entry_for_external_drag(target_entry, target_worktree)?;
4439                            Some((target_entry.id, highlight_entry_id))
4440                        }) else {
4441                            return;
4442                        };
4443
4444                        this.drag_target_entry = Some(DragTarget::Entry {
4445                            entry_id,
4446                            highlight_entry_id,
4447                        });
4448
4449                    },
4450                ))
4451                .on_drop(cx.listener(
4452                    move |this, external_paths: &ExternalPaths, window, cx| {
4453                        this.drag_target_entry = None;
4454                        this.hover_scroll_task.take();
4455                        this.drop_external_files(external_paths.paths(), entry_id, window, cx);
4456                        cx.stop_propagation();
4457                    },
4458                ))
4459                .on_drag_move::<DraggedSelection>(cx.listener(
4460                    move |this, event: &DragMoveEvent<DraggedSelection>, window, cx| {
4461                        let is_current_target = this.drag_target_entry.as_ref()
4462                             .and_then(|entry| match entry {
4463                                 DragTarget::Entry { entry_id: target_id, .. } => Some(*target_id),
4464                                 DragTarget::Background { .. } => None,
4465                             }) == Some(entry_id);
4466
4467                        if !event.bounds.contains(&event.event.position) {
4468                            // Entry responsible for setting drag target is also responsible to
4469                            // clear it up after drag is out of bounds
4470                            if is_current_target {
4471                                this.drag_target_entry = None;
4472                            }
4473                            return;
4474                        }
4475
4476                        if is_current_target {
4477                            return;
4478                        }
4479
4480                        let drag_state = event.drag(cx);
4481
4482                        if drag_state.items().count() == 1 {
4483                            this.marked_entries.clear();
4484                            this.marked_entries.push(drag_state.active_selection);
4485                        }
4486
4487                        let Some((entry_id, highlight_entry_id)) = maybe!({
4488                            let target_worktree = this.project.read(cx).worktree_for_id(selection.worktree_id, cx)?.read(cx);
4489                            let target_entry = target_worktree.entry_for_path(&path_for_dragged_selection)?;
4490                            let highlight_entry_id = this.highlight_entry_for_selection_drag(target_entry, target_worktree, drag_state, cx)?;
4491                            Some((target_entry.id, highlight_entry_id))
4492                        }) else {
4493                            return;
4494                        };
4495
4496                        this.drag_target_entry = Some(DragTarget::Entry {
4497                            entry_id,
4498                            highlight_entry_id,
4499                        });
4500
4501                        this.hover_expand_task.take();
4502
4503                        if !kind.is_dir()
4504                            || this
4505                                .state
4506                                .expanded_dir_ids
4507                                .get(&details.worktree_id)
4508                                .is_some_and(|ids| ids.binary_search(&entry_id).is_ok())
4509                        {
4510                            return;
4511                        }
4512
4513                        let bounds = event.bounds;
4514                        this.hover_expand_task =
4515                            Some(cx.spawn_in(window, async move |this, cx| {
4516                                cx.background_executor()
4517                                    .timer(Duration::from_millis(500))
4518                                    .await;
4519                                this.update_in(cx, |this, window, cx| {
4520                                    this.hover_expand_task.take();
4521                                    if this.drag_target_entry.as_ref().and_then(|entry| match entry {
4522                                        DragTarget::Entry { entry_id: target_id, .. } => Some(*target_id),
4523                                        DragTarget::Background { .. } => None,
4524                                    }) == Some(entry_id)
4525                                        && bounds.contains(&window.mouse_position())
4526                                    {
4527                                        this.expand_entry(worktree_id, entry_id, cx);
4528                                        this.update_visible_entries(
4529                                            Some((worktree_id, entry_id)),
4530                                            false,
4531                                            false,
4532                                            window,
4533                                            cx,
4534                                        );
4535                                        cx.notify();
4536                                    }
4537                                })
4538                                .ok();
4539                            }));
4540                    },
4541                ))
4542                .on_drag(
4543                    dragged_selection,
4544                    {
4545                        let active_component = self.state.ancestors.get(&entry_id).and_then(|ancestors| ancestors.active_component(&details.filename));
4546                        move |selection, click_offset, _window, cx| {
4547                            let filename = active_component.as_ref().unwrap_or_else(|| &details.filename);
4548                            cx.new(|_| DraggedProjectEntryView {
4549                                icon: details.icon.clone(),
4550                                filename: filename.clone(),
4551                                click_offset,
4552                                selection: selection.active_selection,
4553                                selections: selection.marked_selections.clone(),
4554                            })
4555                        }
4556                    }
4557                )
4558                .on_drop(
4559                    cx.listener(move |this, selections: &DraggedSelection, window, cx| {
4560                        this.drag_target_entry = None;
4561                        this.hover_scroll_task.take();
4562                        this.hover_expand_task.take();
4563                        if folded_directory_drag_target.is_some() {
4564                            return;
4565                        }
4566                        this.drag_onto(selections, entry_id, kind.is_file(), window, cx);
4567                    }),
4568                ))
4569            })
4570            .on_mouse_down(
4571                MouseButton::Left,
4572                cx.listener(move |this, _, _, cx| {
4573                    this.mouse_down = true;
4574                    cx.propagate();
4575                }),
4576            )
4577            .on_click(
4578                cx.listener(move |project_panel, event: &gpui::ClickEvent, window, cx| {
4579                    if event.is_right_click() || event.first_focus()
4580                        || show_editor
4581                    {
4582                        return;
4583                    }
4584                    if event.standard_click() {
4585                        project_panel.mouse_down = false;
4586                    }
4587                    cx.stop_propagation();
4588
4589                    if let Some(selection) = project_panel.state.selection.filter(|_| event.modifiers().shift) {
4590                        let current_selection = project_panel.index_for_selection(selection);
4591                        let clicked_entry = SelectedEntry {
4592                            entry_id,
4593                            worktree_id,
4594                        };
4595                        let target_selection = project_panel.index_for_selection(clicked_entry);
4596                        if let Some(((_, _, source_index), (_, _, target_index))) =
4597                            current_selection.zip(target_selection)
4598                        {
4599                            let range_start = source_index.min(target_index);
4600                            let range_end = source_index.max(target_index) + 1;
4601                            let mut new_selections = Vec::new();
4602                            project_panel.for_each_visible_entry(
4603                                range_start..range_end,
4604                                window,
4605                                cx,
4606                                |entry_id, details, _, _| {
4607                                    new_selections.push(SelectedEntry {
4608                                        entry_id,
4609                                        worktree_id: details.worktree_id,
4610                                    });
4611                                },
4612                            );
4613
4614                            for selection in &new_selections {
4615                                if !project_panel.marked_entries.contains(selection) {
4616                                    project_panel.marked_entries.push(*selection);
4617                                }
4618                            }
4619
4620                            project_panel.state.selection = Some(clicked_entry);
4621                            if !project_panel.marked_entries.contains(&clicked_entry) {
4622                                project_panel.marked_entries.push(clicked_entry);
4623                            }
4624                        }
4625                    } else if event.modifiers().secondary() {
4626                        if event.click_count() > 1 {
4627                            project_panel.split_entry(entry_id, false, None, cx);
4628                        } else {
4629                            project_panel.state.selection = Some(selection);
4630                            if let Some(position) = project_panel.marked_entries.iter().position(|e| *e == selection) {
4631                                project_panel.marked_entries.remove(position);
4632                            } else {
4633                                project_panel.marked_entries.push(selection);
4634                            }
4635                        }
4636                    } else if kind.is_dir() {
4637                        project_panel.marked_entries.clear();
4638                        if is_sticky
4639                            && let Some((_, _, index)) = project_panel.index_for_entry(entry_id, worktree_id) {
4640                                project_panel.scroll_handle.scroll_to_item_strict_with_offset(index, ScrollStrategy::Top, sticky_index.unwrap_or(0));
4641                                cx.notify();
4642                                // move down by 1px so that clicked item
4643                                // don't count as sticky anymore
4644                                cx.on_next_frame(window, |_, window, cx| {
4645                                    cx.on_next_frame(window, |this, _, cx| {
4646                                        let mut offset = this.scroll_handle.offset();
4647                                        offset.y += px(1.);
4648                                        this.scroll_handle.set_offset(offset);
4649                                        cx.notify();
4650                                    });
4651                                });
4652                                return;
4653                            }
4654                        if event.modifiers().alt {
4655                            project_panel.toggle_expand_all(entry_id, window, cx);
4656                        } else {
4657                            project_panel.toggle_expanded(entry_id, window, cx);
4658                        }
4659                    } else {
4660                        let preview_tabs_enabled = PreviewTabsSettings::get_global(cx).enabled;
4661                        let click_count = event.click_count();
4662                        let focus_opened_item = !preview_tabs_enabled || click_count > 1;
4663                        let allow_preview = preview_tabs_enabled && click_count == 1;
4664                        project_panel.open_entry(entry_id, focus_opened_item, allow_preview, cx);
4665                    }
4666                }),
4667            )
4668            .child(
4669                ListItem::new(id)
4670                    .indent_level(depth)
4671                    .indent_step_size(px(settings.indent_size))
4672                    .spacing(match settings.entry_spacing {
4673                        ProjectPanelEntrySpacing::Comfortable => ListItemSpacing::Dense,
4674                        ProjectPanelEntrySpacing::Standard => {
4675                            ListItemSpacing::ExtraDense
4676                        }
4677                    })
4678                    .selectable(false)
4679                    .when_some(canonical_path, |this, path| {
4680                        this.end_slot::<AnyElement>(
4681                            div()
4682                                .id("symlink_icon")
4683                                .pr_3()
4684                                .tooltip(move |_window, cx| {
4685                                    Tooltip::with_meta(
4686                                        path.to_string(),
4687                                        None,
4688                                        "Symbolic Link",
4689                                        cx,
4690                                    )
4691                                })
4692                                .child(
4693                                    Icon::new(IconName::ArrowUpRight)
4694                                        .size(IconSize::Indicator)
4695                                        .color(filename_text_color),
4696                                )
4697                                .into_any_element(),
4698                        )
4699                    })
4700                    .child(if let Some(icon) = &icon {
4701                        if let Some((_, decoration_color)) =
4702                            entry_diagnostic_aware_icon_decoration_and_color(diagnostic_severity)
4703                        {
4704                            let is_warning = diagnostic_severity
4705                                .map(|severity| matches!(severity, DiagnosticSeverity::WARNING))
4706                                .unwrap_or(false);
4707                            div().child(
4708                                DecoratedIcon::new(
4709                                    Icon::from_path(icon.clone()).color(Color::Muted),
4710                                    Some(
4711                                        IconDecoration::new(
4712                                            if kind.is_file() {
4713                                                if is_warning {
4714                                                    IconDecorationKind::Triangle
4715                                                } else {
4716                                                    IconDecorationKind::X
4717                                                }
4718                                            } else {
4719                                                IconDecorationKind::Dot
4720                                            },
4721                                            bg_color,
4722                                            cx,
4723                                        )
4724                                        .group_name(Some(GROUP_NAME.into()))
4725                                        .knockout_hover_color(bg_hover_color)
4726                                        .color(decoration_color.color(cx))
4727                                        .position(Point {
4728                                            x: px(-2.),
4729                                            y: px(-2.),
4730                                        }),
4731                                    ),
4732                                )
4733                                .into_any_element(),
4734                            )
4735                        } else {
4736                            h_flex().child(Icon::from_path(icon.to_string()).color(Color::Muted))
4737                        }
4738                    } else if let Some((icon_name, color)) =
4739                        entry_diagnostic_aware_icon_name_and_color(diagnostic_severity)
4740                    {
4741                        h_flex()
4742                            .size(IconSize::default().rems())
4743                            .child(Icon::new(icon_name).color(color).size(IconSize::Small))
4744                    } else {
4745                        h_flex()
4746                            .size(IconSize::default().rems())
4747                            .invisible()
4748                            .flex_none()
4749                    })
4750                    .child(
4751                        if let (Some(editor), true) = (Some(&self.filename_editor), show_editor) {
4752                            h_flex().h_6().w_full().child(editor.clone())
4753                        } else {
4754                            h_flex().h_6().map(|mut this| {
4755                                if let Some(folded_ancestors) = self.state.ancestors.get(&entry_id) {
4756                                    let components = Path::new(&file_name)
4757                                        .components()
4758                                        .map(|comp| comp.as_os_str().to_string_lossy().into_owned())
4759                                        .collect::<Vec<_>>();
4760                                    let active_index = folded_ancestors.active_index();
4761                                    let components_len = components.len();
4762                                    let delimiter = SharedString::new(path_style.separator());
4763                                    for (index, component) in components.iter().enumerate() {
4764                                        if index != 0 {
4765                                                let delimiter_target_index = index - 1;
4766                                                let target_entry_id = folded_ancestors.ancestors.get(components_len - 1 - delimiter_target_index).cloned();
4767                                                this = this.child(
4768                                                    div()
4769                                                    .when(!is_sticky, |div| {
4770                                                        div
4771                                                            .when(settings.drag_and_drop, |div| div
4772                                                            .on_drop(cx.listener(move |this, selections: &DraggedSelection, window, cx| {
4773                                                            this.hover_scroll_task.take();
4774                                                            this.drag_target_entry = None;
4775                                                            this.folded_directory_drag_target = None;
4776                                                            if let Some(target_entry_id) = target_entry_id {
4777                                                                this.drag_onto(selections, target_entry_id, kind.is_file(), window, cx);
4778                                                            }
4779                                                        }))
4780                                                        .on_drag_move(cx.listener(
4781                                                            move |this, event: &DragMoveEvent<DraggedSelection>, _, _| {
4782                                                                if event.bounds.contains(&event.event.position) {
4783                                                                    this.folded_directory_drag_target = Some(
4784                                                                        FoldedDirectoryDragTarget {
4785                                                                            entry_id,
4786                                                                            index: delimiter_target_index,
4787                                                                            is_delimiter_target: true,
4788                                                                        }
4789                                                                    );
4790                                                                } else {
4791                                                                    let is_current_target = this.folded_directory_drag_target
4792                                                                        .is_some_and(|target|
4793                                                                            target.entry_id == entry_id &&
4794                                                                            target.index == delimiter_target_index &&
4795                                                                            target.is_delimiter_target
4796                                                                        );
4797                                                                    if is_current_target {
4798                                                                        this.folded_directory_drag_target = None;
4799                                                                    }
4800                                                                }
4801
4802                                                            },
4803                                                        )))
4804                                                    })
4805                                                    .child(
4806                                                        Label::new(delimiter.clone())
4807                                                            .single_line()
4808                                                            .color(filename_text_color)
4809                                                    )
4810                                                );
4811                                        }
4812                                        let id = SharedString::from(format!(
4813                                            "project_panel_path_component_{}_{index}",
4814                                            entry_id.to_usize()
4815                                        ));
4816                                        let label = div()
4817                                            .id(id)
4818                                            .when(!is_sticky,| div| {
4819                                                div
4820                                                .when(index != components_len - 1, |div|{
4821                                                    let target_entry_id = folded_ancestors.ancestors.get(components_len - 1 - index).cloned();
4822                                                    div
4823                                                    .when(settings.drag_and_drop, |div| div
4824                                                    .on_drag_move(cx.listener(
4825                                                        move |this, event: &DragMoveEvent<DraggedSelection>, _, _| {
4826                                                        if event.bounds.contains(&event.event.position) {
4827                                                                this.folded_directory_drag_target = Some(
4828                                                                    FoldedDirectoryDragTarget {
4829                                                                        entry_id,
4830                                                                        index,
4831                                                                        is_delimiter_target: false,
4832                                                                    }
4833                                                                );
4834                                                            } else {
4835                                                                let is_current_target = this.folded_directory_drag_target
4836                                                                    .as_ref()
4837                                                                    .is_some_and(|target|
4838                                                                        target.entry_id == entry_id &&
4839                                                                        target.index == index &&
4840                                                                        !target.is_delimiter_target
4841                                                                    );
4842                                                                if is_current_target {
4843                                                                    this.folded_directory_drag_target = None;
4844                                                                }
4845                                                            }
4846                                                        },
4847                                                    ))
4848                                                    .on_drop(cx.listener(move |this, selections: &DraggedSelection, window,cx| {
4849                                                        this.hover_scroll_task.take();
4850                                                        this.drag_target_entry = None;
4851                                                        this.folded_directory_drag_target = None;
4852                                                        if let Some(target_entry_id) = target_entry_id {
4853                                                            this.drag_onto(selections, target_entry_id, kind.is_file(), window, cx);
4854                                                        }
4855                                                    }))
4856                                                    .when(folded_directory_drag_target.is_some_and(|target|
4857                                                        target.entry_id == entry_id &&
4858                                                        target.index == index
4859                                                    ), |this| {
4860                                                        this.bg(item_colors.drag_over)
4861                                                    }))
4862                                                })
4863                                            })
4864                                            .on_mouse_down(
4865                                                MouseButton::Left,
4866                                                cx.listener(move |this, _, _, cx| {
4867                                                    if index != active_index
4868                                                        && let Some(folds) =
4869                                                            this.state.ancestors.get_mut(&entry_id)
4870                                                        {
4871                                                            folds.current_ancestor_depth =
4872                                                                components_len - 1 - index;
4873                                                            cx.notify();
4874                                                        }
4875                                                }),
4876                                            )
4877                                            .child(
4878                                                Label::new(component)
4879                                                    .single_line()
4880                                                    .color(filename_text_color)
4881                                                    .when(
4882                                                        index == active_index
4883                                                            && (is_active || is_marked),
4884                                                        |this| this.underline(),
4885                                                    ),
4886                                            );
4887
4888                                        this = this.child(label);
4889                                    }
4890
4891                                    this
4892                                } else {
4893                                    this.child(
4894                                        Label::new(file_name)
4895                                            .single_line()
4896                                            .color(filename_text_color),
4897                                    )
4898                                }
4899                            })
4900                        },
4901                    )
4902                    .on_secondary_mouse_down(cx.listener(
4903                        move |this, event: &MouseDownEvent, window, cx| {
4904                            // Stop propagation to prevent the catch-all context menu for the project
4905                            // panel from being deployed.
4906                            cx.stop_propagation();
4907                            // Some context menu actions apply to all marked entries. If the user
4908                            // right-clicks on an entry that is not marked, they may not realize the
4909                            // action applies to multiple entries. To avoid inadvertent changes, all
4910                            // entries are unmarked.
4911                            if !this.marked_entries.contains(&selection) {
4912                                this.marked_entries.clear();
4913                            }
4914                            this.deploy_context_menu(event.position, entry_id, window, cx);
4915                        },
4916                    ))
4917                    .overflow_x(),
4918            )
4919            .when_some(
4920                validation_color_and_message,
4921                |this, (color, message)| {
4922                    this
4923                    .relative()
4924                    .child(
4925                        deferred(
4926                            div()
4927                            .occlude()
4928                            .absolute()
4929                            .top_full()
4930                            .left(px(-1.)) // Used px over rem so that it doesn't change with font size
4931                            .right(px(-0.5))
4932                            .py_1()
4933                            .px_2()
4934                            .border_1()
4935                            .border_color(color)
4936                            .bg(cx.theme().colors().background)
4937                            .child(
4938                                Label::new(message)
4939                                .color(Color::from(color))
4940                                .size(LabelSize::Small)
4941                            )
4942                        )
4943                    )
4944                }
4945            )
4946    }
4947
4948    fn details_for_entry(
4949        &self,
4950        entry: &Entry,
4951        worktree_id: WorktreeId,
4952        root_name: &RelPath,
4953        entries_paths: &HashSet<Arc<RelPath>>,
4954        git_status: GitSummary,
4955        sticky: Option<StickyDetails>,
4956        _window: &mut Window,
4957        cx: &mut Context<Self>,
4958    ) -> EntryDetails {
4959        let (show_file_icons, show_folder_icons) = {
4960            let settings = ProjectPanelSettings::get_global(cx);
4961            (settings.file_icons, settings.folder_icons)
4962        };
4963
4964        let expanded_entry_ids = self
4965            .state
4966            .expanded_dir_ids
4967            .get(&worktree_id)
4968            .map(Vec::as_slice)
4969            .unwrap_or(&[]);
4970        let is_expanded = expanded_entry_ids.binary_search(&entry.id).is_ok();
4971
4972        let icon = match entry.kind {
4973            EntryKind::File => {
4974                if show_file_icons {
4975                    FileIcons::get_icon(entry.path.as_std_path(), cx)
4976                } else {
4977                    None
4978                }
4979            }
4980            _ => {
4981                if show_folder_icons {
4982                    FileIcons::get_folder_icon(is_expanded, entry.path.as_std_path(), cx)
4983                } else {
4984                    FileIcons::get_chevron_icon(is_expanded, cx)
4985                }
4986            }
4987        };
4988
4989        let path_style = self.project.read(cx).path_style(cx);
4990        let (depth, difference) =
4991            ProjectPanel::calculate_depth_and_difference(entry, entries_paths);
4992
4993        let filename = if difference > 1 {
4994            entry
4995                .path
4996                .last_n_components(difference)
4997                .map_or(String::new(), |suffix| {
4998                    suffix.display(path_style).to_string()
4999                })
5000        } else {
5001            entry
5002                .path
5003                .file_name()
5004                .map(|name| name.to_string())
5005                .unwrap_or_else(|| root_name.as_unix_str().to_string())
5006        };
5007
5008        let selection = SelectedEntry {
5009            worktree_id,
5010            entry_id: entry.id,
5011        };
5012        let is_marked = self.marked_entries.contains(&selection);
5013        let is_selected = self.state.selection == Some(selection);
5014
5015        let diagnostic_severity = self
5016            .diagnostics
5017            .get(&(worktree_id, entry.path.clone()))
5018            .cloned();
5019
5020        let filename_text_color =
5021            entry_git_aware_label_color(git_status, entry.is_ignored, is_marked);
5022
5023        let is_cut = self
5024            .clipboard
5025            .as_ref()
5026            .is_some_and(|e| e.is_cut() && e.items().contains(&selection));
5027
5028        EntryDetails {
5029            filename,
5030            icon,
5031            path: entry.path.clone(),
5032            depth,
5033            kind: entry.kind,
5034            is_ignored: entry.is_ignored,
5035            is_expanded,
5036            is_selected,
5037            is_marked,
5038            is_editing: false,
5039            is_processing: false,
5040            is_cut,
5041            sticky,
5042            filename_text_color,
5043            diagnostic_severity,
5044            git_status,
5045            is_private: entry.is_private,
5046            worktree_id,
5047            canonical_path: entry.canonical_path.clone(),
5048        }
5049    }
5050
5051    fn dispatch_context(&self, window: &Window, cx: &Context<Self>) -> KeyContext {
5052        let mut dispatch_context = KeyContext::new_with_defaults();
5053        dispatch_context.add("ProjectPanel");
5054        dispatch_context.add("menu");
5055
5056        let identifier = if self.filename_editor.focus_handle(cx).is_focused(window) {
5057            "editing"
5058        } else {
5059            "not_editing"
5060        };
5061
5062        dispatch_context.add(identifier);
5063        dispatch_context
5064    }
5065
5066    fn reveal_entry(
5067        &mut self,
5068        project: Entity<Project>,
5069        entry_id: ProjectEntryId,
5070        skip_ignored: bool,
5071        window: &mut Window,
5072        cx: &mut Context<Self>,
5073    ) -> Result<()> {
5074        let worktree = project
5075            .read(cx)
5076            .worktree_for_entry(entry_id, cx)
5077            .context("can't reveal a non-existent entry in the project panel")?;
5078        let worktree = worktree.read(cx);
5079        if skip_ignored
5080            && worktree
5081                .entry_for_id(entry_id)
5082                .is_none_or(|entry| entry.is_ignored && !entry.is_always_included)
5083        {
5084            anyhow::bail!("can't reveal an ignored entry in the project panel");
5085        }
5086        let is_active_item_file_diff_view = self
5087            .workspace
5088            .upgrade()
5089            .and_then(|ws| ws.read(cx).active_item(cx))
5090            .map(|item| item.act_as_type(TypeId::of::<FileDiffView>(), cx).is_some())
5091            .unwrap_or(false);
5092        if is_active_item_file_diff_view {
5093            return Ok(());
5094        }
5095
5096        let worktree_id = worktree.id();
5097        self.expand_entry(worktree_id, entry_id, cx);
5098        self.update_visible_entries(Some((worktree_id, entry_id)), false, true, window, cx);
5099        self.marked_entries.clear();
5100        self.marked_entries.push(SelectedEntry {
5101            worktree_id,
5102            entry_id,
5103        });
5104        cx.notify();
5105        Ok(())
5106    }
5107
5108    fn find_active_indent_guide(
5109        &self,
5110        indent_guides: &[IndentGuideLayout],
5111        cx: &App,
5112    ) -> Option<usize> {
5113        let (worktree, entry) = self.selected_entry(cx)?;
5114
5115        // Find the parent entry of the indent guide, this will either be the
5116        // expanded folder we have selected, or the parent of the currently
5117        // selected file/collapsed directory
5118        let mut entry = entry;
5119        loop {
5120            let is_expanded_dir = entry.is_dir()
5121                && self
5122                    .state
5123                    .expanded_dir_ids
5124                    .get(&worktree.id())
5125                    .map(|ids| ids.binary_search(&entry.id).is_ok())
5126                    .unwrap_or(false);
5127            if is_expanded_dir {
5128                break;
5129            }
5130            entry = worktree.entry_for_path(&entry.path.parent()?)?;
5131        }
5132
5133        let (active_indent_range, depth) = {
5134            let (worktree_ix, child_offset, ix) = self.index_for_entry(entry.id, worktree.id())?;
5135            let child_paths = &self.state.visible_entries[worktree_ix].entries;
5136            let mut child_count = 0;
5137            let depth = entry.path.ancestors().count();
5138            while let Some(entry) = child_paths.get(child_offset + child_count + 1) {
5139                if entry.path.ancestors().count() <= depth {
5140                    break;
5141                }
5142                child_count += 1;
5143            }
5144
5145            let start = ix + 1;
5146            let end = start + child_count;
5147
5148            let visible_worktree = &self.state.visible_entries[worktree_ix];
5149            let visible_worktree_entries = visible_worktree.index.get_or_init(|| {
5150                visible_worktree
5151                    .entries
5152                    .iter()
5153                    .map(|e| e.path.clone())
5154                    .collect()
5155            });
5156
5157            // Calculate the actual depth of the entry, taking into account that directories can be auto-folded.
5158            let (depth, _) = Self::calculate_depth_and_difference(entry, visible_worktree_entries);
5159            (start..end, depth)
5160        };
5161
5162        let candidates = indent_guides
5163            .iter()
5164            .enumerate()
5165            .filter(|(_, indent_guide)| indent_guide.offset.x == depth);
5166
5167        for (i, indent) in candidates {
5168            // Find matches that are either an exact match, partially on screen, or inside the enclosing indent
5169            if active_indent_range.start <= indent.offset.y + indent.length
5170                && indent.offset.y <= active_indent_range.end
5171            {
5172                return Some(i);
5173            }
5174        }
5175        None
5176    }
5177
5178    fn render_sticky_entries(
5179        &self,
5180        child: StickyProjectPanelCandidate,
5181        window: &mut Window,
5182        cx: &mut Context<Self>,
5183    ) -> SmallVec<[AnyElement; 8]> {
5184        let project = self.project.read(cx);
5185
5186        let Some((worktree_id, entry_ref)) = self.entry_at_index(child.index) else {
5187            return SmallVec::new();
5188        };
5189
5190        let Some(visible) = self
5191            .state
5192            .visible_entries
5193            .iter()
5194            .find(|worktree| worktree.worktree_id == worktree_id)
5195        else {
5196            return SmallVec::new();
5197        };
5198
5199        let Some(worktree) = project.worktree_for_id(worktree_id, cx) else {
5200            return SmallVec::new();
5201        };
5202        let worktree = worktree.read(cx).snapshot();
5203
5204        let paths = visible
5205            .index
5206            .get_or_init(|| visible.entries.iter().map(|e| e.path.clone()).collect());
5207
5208        let mut sticky_parents = Vec::new();
5209        let mut current_path = entry_ref.path.clone();
5210
5211        'outer: loop {
5212            if let Some(parent_path) = current_path.parent() {
5213                for ancestor_path in parent_path.ancestors() {
5214                    if paths.contains(ancestor_path)
5215                        && let Some(parent_entry) = worktree.entry_for_path(ancestor_path)
5216                    {
5217                        sticky_parents.push(parent_entry.clone());
5218                        current_path = parent_entry.path.clone();
5219                        continue 'outer;
5220                    }
5221                }
5222            }
5223            break 'outer;
5224        }
5225
5226        if sticky_parents.is_empty() {
5227            return SmallVec::new();
5228        }
5229
5230        sticky_parents.reverse();
5231
5232        let panel_settings = ProjectPanelSettings::get_global(cx);
5233        let git_status_enabled = panel_settings.git_status;
5234        let root_name = worktree.root_name();
5235
5236        let git_summaries_by_id = if git_status_enabled {
5237            visible
5238                .entries
5239                .iter()
5240                .map(|e| (e.id, e.git_summary))
5241                .collect::<HashMap<_, _>>()
5242        } else {
5243            Default::default()
5244        };
5245
5246        // already checked if non empty above
5247        let last_item_index = sticky_parents.len() - 1;
5248        sticky_parents
5249            .iter()
5250            .enumerate()
5251            .map(|(index, entry)| {
5252                let git_status = git_summaries_by_id
5253                    .get(&entry.id)
5254                    .copied()
5255                    .unwrap_or_default();
5256                let sticky_details = Some(StickyDetails {
5257                    sticky_index: index,
5258                });
5259                let details = self.details_for_entry(
5260                    entry,
5261                    worktree_id,
5262                    root_name,
5263                    paths,
5264                    git_status,
5265                    sticky_details,
5266                    window,
5267                    cx,
5268                );
5269                self.render_entry(entry.id, details, window, cx)
5270                    .when(index == last_item_index, |this| {
5271                        let shadow_color_top = hsla(0.0, 0.0, 0.0, 0.1);
5272                        let shadow_color_bottom = hsla(0.0, 0.0, 0.0, 0.);
5273                        let sticky_shadow = div()
5274                            .absolute()
5275                            .left_0()
5276                            .bottom_neg_1p5()
5277                            .h_1p5()
5278                            .w_full()
5279                            .bg(linear_gradient(
5280                                0.,
5281                                linear_color_stop(shadow_color_top, 1.),
5282                                linear_color_stop(shadow_color_bottom, 0.),
5283                            ));
5284                        this.child(sticky_shadow)
5285                    })
5286                    .into_any()
5287            })
5288            .collect()
5289    }
5290}
5291
5292#[derive(Clone)]
5293struct StickyProjectPanelCandidate {
5294    index: usize,
5295    depth: usize,
5296}
5297
5298impl StickyCandidate for StickyProjectPanelCandidate {
5299    fn depth(&self) -> usize {
5300        self.depth
5301    }
5302}
5303
5304fn item_width_estimate(depth: usize, item_text_chars: usize, is_symlink: bool) -> usize {
5305    const ICON_SIZE_FACTOR: usize = 2;
5306    let mut item_width = depth * ICON_SIZE_FACTOR + item_text_chars;
5307    if is_symlink {
5308        item_width += ICON_SIZE_FACTOR;
5309    }
5310    item_width
5311}
5312
5313impl Render for ProjectPanel {
5314    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
5315        let has_worktree = !self.state.visible_entries.is_empty();
5316        let project = self.project.read(cx);
5317        let panel_settings = ProjectPanelSettings::get_global(cx);
5318        let indent_size = panel_settings.indent_size;
5319        let show_indent_guides = panel_settings.indent_guides.show == ShowIndentGuides::Always;
5320        let show_sticky_entries = {
5321            if panel_settings.sticky_scroll {
5322                let is_scrollable = self.scroll_handle.is_scrollable();
5323                let is_scrolled = self.scroll_handle.offset().y < px(0.);
5324                is_scrollable && is_scrolled
5325            } else {
5326                false
5327            }
5328        };
5329
5330        let is_local = project.is_local();
5331
5332        if has_worktree {
5333            let item_count = self
5334                .state
5335                .visible_entries
5336                .iter()
5337                .map(|worktree| worktree.entries.len())
5338                .sum();
5339
5340            fn handle_drag_move<T: 'static>(
5341                this: &mut ProjectPanel,
5342                e: &DragMoveEvent<T>,
5343                window: &mut Window,
5344                cx: &mut Context<ProjectPanel>,
5345            ) {
5346                if let Some(previous_position) = this.previous_drag_position {
5347                    // Refresh cursor only when an actual drag happens,
5348                    // because modifiers are not updated when the cursor is not moved.
5349                    if e.event.position != previous_position {
5350                        this.refresh_drag_cursor_style(&e.event.modifiers, window, cx);
5351                    }
5352                }
5353                this.previous_drag_position = Some(e.event.position);
5354
5355                if !e.bounds.contains(&e.event.position) {
5356                    this.drag_target_entry = None;
5357                    return;
5358                }
5359                this.hover_scroll_task.take();
5360                let panel_height = e.bounds.size.height;
5361                if panel_height <= px(0.) {
5362                    return;
5363                }
5364
5365                let event_offset = e.event.position.y - e.bounds.origin.y;
5366                // How far along in the project panel is our cursor? (0. is the top of a list, 1. is the bottom)
5367                let hovered_region_offset = event_offset / panel_height;
5368
5369                // We want the scrolling to be a bit faster when the cursor is closer to the edge of a list.
5370                // These pixels offsets were picked arbitrarily.
5371                let vertical_scroll_offset = if hovered_region_offset <= 0.05 {
5372                    8.
5373                } else if hovered_region_offset <= 0.15 {
5374                    5.
5375                } else if hovered_region_offset >= 0.95 {
5376                    -8.
5377                } else if hovered_region_offset >= 0.85 {
5378                    -5.
5379                } else {
5380                    return;
5381                };
5382                let adjustment = point(px(0.), px(vertical_scroll_offset));
5383                this.hover_scroll_task = Some(cx.spawn_in(window, async move |this, cx| {
5384                    loop {
5385                        let should_stop_scrolling = this
5386                            .update(cx, |this, cx| {
5387                                this.hover_scroll_task.as_ref()?;
5388                                let handle = this.scroll_handle.0.borrow_mut();
5389                                let offset = handle.base_handle.offset();
5390
5391                                handle.base_handle.set_offset(offset + adjustment);
5392                                cx.notify();
5393                                Some(())
5394                            })
5395                            .ok()
5396                            .flatten()
5397                            .is_some();
5398                        if should_stop_scrolling {
5399                            return;
5400                        }
5401                        cx.background_executor()
5402                            .timer(Duration::from_millis(16))
5403                            .await;
5404                    }
5405                }));
5406            }
5407            h_flex()
5408                .id("project-panel")
5409                .group("project-panel")
5410                .when(panel_settings.drag_and_drop, |this| {
5411                    this.on_drag_move(cx.listener(handle_drag_move::<ExternalPaths>))
5412                        .on_drag_move(cx.listener(handle_drag_move::<DraggedSelection>))
5413                })
5414                .size_full()
5415                .relative()
5416                .on_modifiers_changed(cx.listener(
5417                    |this, event: &ModifiersChangedEvent, window, cx| {
5418                        this.refresh_drag_cursor_style(&event.modifiers, window, cx);
5419                    },
5420                ))
5421                .key_context(self.dispatch_context(window, cx))
5422                .on_action(cx.listener(Self::scroll_up))
5423                .on_action(cx.listener(Self::scroll_down))
5424                .on_action(cx.listener(Self::scroll_cursor_center))
5425                .on_action(cx.listener(Self::scroll_cursor_top))
5426                .on_action(cx.listener(Self::scroll_cursor_bottom))
5427                .on_action(cx.listener(Self::select_next))
5428                .on_action(cx.listener(Self::select_previous))
5429                .on_action(cx.listener(Self::select_first))
5430                .on_action(cx.listener(Self::select_last))
5431                .on_action(cx.listener(Self::select_parent))
5432                .on_action(cx.listener(Self::select_next_git_entry))
5433                .on_action(cx.listener(Self::select_prev_git_entry))
5434                .on_action(cx.listener(Self::select_next_diagnostic))
5435                .on_action(cx.listener(Self::select_prev_diagnostic))
5436                .on_action(cx.listener(Self::select_next_directory))
5437                .on_action(cx.listener(Self::select_prev_directory))
5438                .on_action(cx.listener(Self::expand_selected_entry))
5439                .on_action(cx.listener(Self::collapse_selected_entry))
5440                .on_action(cx.listener(Self::collapse_all_entries))
5441                .on_action(cx.listener(Self::open))
5442                .on_action(cx.listener(Self::open_permanent))
5443                .on_action(cx.listener(Self::open_split_vertical))
5444                .on_action(cx.listener(Self::open_split_horizontal))
5445                .on_action(cx.listener(Self::confirm))
5446                .on_action(cx.listener(Self::cancel))
5447                .on_action(cx.listener(Self::copy_path))
5448                .on_action(cx.listener(Self::copy_relative_path))
5449                .on_action(cx.listener(Self::new_search_in_directory))
5450                .on_action(cx.listener(Self::unfold_directory))
5451                .on_action(cx.listener(Self::fold_directory))
5452                .on_action(cx.listener(Self::remove_from_project))
5453                .on_action(cx.listener(Self::compare_marked_files))
5454                .when(!project.is_read_only(cx), |el| {
5455                    el.on_action(cx.listener(Self::new_file))
5456                        .on_action(cx.listener(Self::new_directory))
5457                        .on_action(cx.listener(Self::rename))
5458                        .on_action(cx.listener(Self::delete))
5459                        .on_action(cx.listener(Self::cut))
5460                        .on_action(cx.listener(Self::copy))
5461                        .on_action(cx.listener(Self::paste))
5462                        .on_action(cx.listener(Self::duplicate))
5463                        .when(!project.is_remote(), |el| {
5464                            el.on_action(cx.listener(Self::trash))
5465                        })
5466                })
5467                .when(project.is_local(), |el| {
5468                    el.on_action(cx.listener(Self::reveal_in_finder))
5469                        .on_action(cx.listener(Self::open_system))
5470                        .on_action(cx.listener(Self::open_in_terminal))
5471                })
5472                .when(project.is_via_remote_server(), |el| {
5473                    el.on_action(cx.listener(Self::open_in_terminal))
5474                })
5475                .track_focus(&self.focus_handle(cx))
5476                .child(
5477                    v_flex()
5478                        .child(
5479                            uniform_list("entries", item_count, {
5480                                cx.processor(|this, range: Range<usize>, window, cx| {
5481                                    this.rendered_entries_len = range.end - range.start;
5482                                    let mut items = Vec::with_capacity(this.rendered_entries_len);
5483                                    this.for_each_visible_entry(
5484                                        range,
5485                                        window,
5486                                        cx,
5487                                        |id, details, window, cx| {
5488                                            items.push(this.render_entry(id, details, window, cx));
5489                                        },
5490                                    );
5491                                    items
5492                                })
5493                            })
5494                            .when(show_indent_guides, |list| {
5495                                list.with_decoration(
5496                                    ui::indent_guides(
5497                                        px(indent_size),
5498                                        IndentGuideColors::panel(cx),
5499                                    )
5500                                    .with_compute_indents_fn(
5501                                        cx.entity(),
5502                                        |this, range, window, cx| {
5503                                            let mut items =
5504                                                SmallVec::with_capacity(range.end - range.start);
5505                                            this.iter_visible_entries(
5506                                                range,
5507                                                window,
5508                                                cx,
5509                                                |entry, _, entries, _, _| {
5510                                                    let (depth, _) =
5511                                                        Self::calculate_depth_and_difference(
5512                                                            entry, entries,
5513                                                        );
5514                                                    items.push(depth);
5515                                                },
5516                                            );
5517                                            items
5518                                        },
5519                                    )
5520                                    .on_click(cx.listener(
5521                                        |this,
5522                                         active_indent_guide: &IndentGuideLayout,
5523                                         window,
5524                                         cx| {
5525                                            if window.modifiers().secondary() {
5526                                                let ix = active_indent_guide.offset.y;
5527                                                let Some((target_entry, worktree)) = maybe!({
5528                                                    let (worktree_id, entry) =
5529                                                        this.entry_at_index(ix)?;
5530                                                    let worktree = this
5531                                                        .project
5532                                                        .read(cx)
5533                                                        .worktree_for_id(worktree_id, cx)?;
5534                                                    let target_entry = worktree
5535                                                        .read(cx)
5536                                                        .entry_for_path(&entry.path.parent()?)?;
5537                                                    Some((target_entry, worktree))
5538                                                }) else {
5539                                                    return;
5540                                                };
5541
5542                                                this.collapse_entry(
5543                                                    target_entry.clone(),
5544                                                    worktree,
5545                                                    window,
5546                                                    cx,
5547                                                );
5548                                            }
5549                                        },
5550                                    ))
5551                                    .with_render_fn(
5552                                        cx.entity(),
5553                                        move |this, params, _, cx| {
5554                                            const LEFT_OFFSET: Pixels = px(14.);
5555                                            const PADDING_Y: Pixels = px(4.);
5556                                            const HITBOX_OVERDRAW: Pixels = px(3.);
5557
5558                                            let active_indent_guide_index = this
5559                                                .find_active_indent_guide(
5560                                                    ¶ms.indent_guides,
5561                                                    cx,
5562                                                );
5563
5564                                            let indent_size = params.indent_size;
5565                                            let item_height = params.item_height;
5566
5567                                            params
5568                                                .indent_guides
5569                                                .into_iter()
5570                                                .enumerate()
5571                                                .map(|(idx, layout)| {
5572                                                    let offset = if layout.continues_offscreen {
5573                                                        px(0.)
5574                                                    } else {
5575                                                        PADDING_Y
5576                                                    };
5577                                                    let bounds = Bounds::new(
5578                                                        point(
5579                                                            layout.offset.x * indent_size
5580                                                                + LEFT_OFFSET,
5581                                                            layout.offset.y * item_height + offset,
5582                                                        ),
5583                                                        size(
5584                                                            px(1.),
5585                                                            layout.length * item_height
5586                                                                - offset * 2.,
5587                                                        ),
5588                                                    );
5589                                                    ui::RenderedIndentGuide {
5590                                                        bounds,
5591                                                        layout,
5592                                                        is_active: Some(idx)
5593                                                            == active_indent_guide_index,
5594                                                        hitbox: Some(Bounds::new(
5595                                                            point(
5596                                                                bounds.origin.x - HITBOX_OVERDRAW,
5597                                                                bounds.origin.y,
5598                                                            ),
5599                                                            size(
5600                                                                bounds.size.width
5601                                                                    + HITBOX_OVERDRAW * 2.,
5602                                                                bounds.size.height,
5603                                                            ),
5604                                                        )),
5605                                                    }
5606                                                })
5607                                                .collect()
5608                                        },
5609                                    ),
5610                                )
5611                            })
5612                            .when(show_sticky_entries, |list| {
5613                                let sticky_items = ui::sticky_items(
5614                                    cx.entity(),
5615                                    |this, range, window, cx| {
5616                                        let mut items =
5617                                            SmallVec::with_capacity(range.end - range.start);
5618                                        this.iter_visible_entries(
5619                                            range,
5620                                            window,
5621                                            cx,
5622                                            |entry, index, entries, _, _| {
5623                                                let (depth, _) =
5624                                                    Self::calculate_depth_and_difference(
5625                                                        entry, entries,
5626                                                    );
5627                                                let candidate =
5628                                                    StickyProjectPanelCandidate { index, depth };
5629                                                items.push(candidate);
5630                                            },
5631                                        );
5632                                        items
5633                                    },
5634                                    |this, marker_entry, window, cx| {
5635                                        let sticky_entries =
5636                                            this.render_sticky_entries(marker_entry, window, cx);
5637                                        this.sticky_items_count = sticky_entries.len();
5638                                        sticky_entries
5639                                    },
5640                                );
5641                                list.with_decoration(if show_indent_guides {
5642                                    sticky_items.with_decoration(
5643                                        ui::indent_guides(
5644                                            px(indent_size),
5645                                            IndentGuideColors::panel(cx),
5646                                        )
5647                                        .with_render_fn(
5648                                            cx.entity(),
5649                                            move |_, params, _, _| {
5650                                                const LEFT_OFFSET: Pixels = px(14.);
5651
5652                                                let indent_size = params.indent_size;
5653                                                let item_height = params.item_height;
5654
5655                                                params
5656                                                    .indent_guides
5657                                                    .into_iter()
5658                                                    .map(|layout| {
5659                                                        let bounds = Bounds::new(
5660                                                            point(
5661                                                                layout.offset.x * indent_size
5662                                                                    + LEFT_OFFSET,
5663                                                                layout.offset.y * item_height,
5664                                                            ),
5665                                                            size(
5666                                                                px(1.),
5667                                                                layout.length * item_height,
5668                                                            ),
5669                                                        );
5670                                                        ui::RenderedIndentGuide {
5671                                                            bounds,
5672                                                            layout,
5673                                                            is_active: false,
5674                                                            hitbox: None,
5675                                                        }
5676                                                    })
5677                                                    .collect()
5678                                            },
5679                                        ),
5680                                    )
5681                                } else {
5682                                    sticky_items
5683                                })
5684                            })
5685                            .with_sizing_behavior(ListSizingBehavior::Infer)
5686                            .with_horizontal_sizing_behavior(
5687                                ListHorizontalSizingBehavior::Unconstrained,
5688                            )
5689                            .with_width_from_item(self.state.max_width_item_index)
5690                            .track_scroll(self.scroll_handle.clone()),
5691                        )
5692                        .child(
5693                            div()
5694                                .id("project-panel-blank-area")
5695                                .block_mouse_except_scroll()
5696                                .flex_grow()
5697                                .when(
5698                                    self.drag_target_entry.as_ref().is_some_and(
5699                                        |entry| match entry {
5700                                            DragTarget::Background => true,
5701                                            DragTarget::Entry {
5702                                                highlight_entry_id, ..
5703                                            } => self.state.last_worktree_root_id.is_some_and(
5704                                                |root_id| *highlight_entry_id == root_id,
5705                                            ),
5706                                        },
5707                                    ),
5708                                    |div| div.bg(cx.theme().colors().drop_target_background),
5709                                )
5710                                .on_drag_move::<ExternalPaths>(cx.listener(
5711                                    move |this, event: &DragMoveEvent<ExternalPaths>, _, _| {
5712                                        let Some(_last_root_id) = this.state.last_worktree_root_id
5713                                        else {
5714                                            return;
5715                                        };
5716                                        if event.bounds.contains(&event.event.position) {
5717                                            this.drag_target_entry = Some(DragTarget::Background);
5718                                        } else {
5719                                            if this.drag_target_entry.as_ref().is_some_and(|e| {
5720                                                matches!(e, DragTarget::Background)
5721                                            }) {
5722                                                this.drag_target_entry = None;
5723                                            }
5724                                        }
5725                                    },
5726                                ))
5727                                .on_drag_move::<DraggedSelection>(cx.listener(
5728                                    move |this, event: &DragMoveEvent<DraggedSelection>, _, cx| {
5729                                        let Some(last_root_id) = this.state.last_worktree_root_id
5730                                        else {
5731                                            return;
5732                                        };
5733                                        if event.bounds.contains(&event.event.position) {
5734                                            let drag_state = event.drag(cx);
5735                                            if this.should_highlight_background_for_selection_drag(
5736                                                &drag_state,
5737                                                last_root_id,
5738                                                cx,
5739                                            ) {
5740                                                this.drag_target_entry =
5741                                                    Some(DragTarget::Background);
5742                                            }
5743                                        } else {
5744                                            if this.drag_target_entry.as_ref().is_some_and(|e| {
5745                                                matches!(e, DragTarget::Background)
5746                                            }) {
5747                                                this.drag_target_entry = None;
5748                                            }
5749                                        }
5750                                    },
5751                                ))
5752                                .on_drop(cx.listener(
5753                                    move |this, external_paths: &ExternalPaths, window, cx| {
5754                                        this.drag_target_entry = None;
5755                                        this.hover_scroll_task.take();
5756                                        if let Some(entry_id) = this.state.last_worktree_root_id {
5757                                            this.drop_external_files(
5758                                                external_paths.paths(),
5759                                                entry_id,
5760                                                window,
5761                                                cx,
5762                                            );
5763                                        }
5764                                        cx.stop_propagation();
5765                                    },
5766                                ))
5767                                .on_drop(cx.listener(
5768                                    move |this, selections: &DraggedSelection, window, cx| {
5769                                        this.drag_target_entry = None;
5770                                        this.hover_scroll_task.take();
5771                                        if let Some(entry_id) = this.state.last_worktree_root_id {
5772                                            this.drag_onto(selections, entry_id, false, window, cx);
5773                                        }
5774                                        cx.stop_propagation();
5775                                    },
5776                                ))
5777                                .on_click(cx.listener(|this, event, window, cx| {
5778                                    if matches!(event, gpui::ClickEvent::Keyboard(_)) {
5779                                        return;
5780                                    }
5781                                    cx.stop_propagation();
5782                                    this.state.selection = None;
5783                                    this.marked_entries.clear();
5784                                    this.focus_handle(cx).focus(window);
5785                                }))
5786                                .on_mouse_down(
5787                                    MouseButton::Right,
5788                                    cx.listener(move |this, event: &MouseDownEvent, window, cx| {
5789                                        // When deploying the context menu anywhere below the last project entry,
5790                                        // act as if the user clicked the root of the last worktree.
5791                                        if let Some(entry_id) = this.state.last_worktree_root_id {
5792                                            this.deploy_context_menu(
5793                                                event.position,
5794                                                entry_id,
5795                                                window,
5796                                                cx,
5797                                            );
5798                                        }
5799                                    }),
5800                                )
5801                                .when(!project.is_read_only(cx), |el| {
5802                                    el.on_click(cx.listener(
5803                                        |this, event: &gpui::ClickEvent, window, cx| {
5804                                            if event.click_count() > 1
5805                                                && let Some(entry_id) =
5806                                                    this.state.last_worktree_root_id
5807                                            {
5808                                                let project = this.project.read(cx);
5809
5810                                                let worktree_id = if let Some(worktree) =
5811                                                    project.worktree_for_entry(entry_id, cx)
5812                                                {
5813                                                    worktree.read(cx).id()
5814                                                } else {
5815                                                    return;
5816                                                };
5817
5818                                                this.state.selection = Some(SelectedEntry {
5819                                                    worktree_id,
5820                                                    entry_id,
5821                                                });
5822
5823                                                this.new_file(&NewFile, window, cx);
5824                                            }
5825                                        },
5826                                    ))
5827                                }),
5828                        )
5829                        .size_full(),
5830                )
5831                .custom_scrollbars(
5832                    Scrollbars::for_settings::<ProjectPanelSettings>()
5833                        .tracked_scroll_handle(self.scroll_handle.clone())
5834                        .with_track_along(
5835                            ScrollAxes::Horizontal,
5836                            cx.theme().colors().panel_background,
5837                        )
5838                        .notify_content(),
5839                    window,
5840                    cx,
5841                )
5842                .children(self.context_menu.as_ref().map(|(menu, position, _)| {
5843                    deferred(
5844                        anchored()
5845                            .position(*position)
5846                            .anchor(gpui::Corner::TopLeft)
5847                            .child(menu.clone()),
5848                    )
5849                    .with_priority(3)
5850                }))
5851        } else {
5852            let focus_handle = self.focus_handle(cx);
5853
5854            v_flex()
5855                .id("empty-project_panel")
5856                .p_4()
5857                .size_full()
5858                .items_center()
5859                .justify_center()
5860                .gap_1()
5861                .track_focus(&self.focus_handle(cx))
5862                .child(
5863                    Button::new("open_project", "Open Project")
5864                        .full_width()
5865                        .key_binding(KeyBinding::for_action_in(
5866                            &workspace::Open,
5867                            &focus_handle,
5868                            cx,
5869                        ))
5870                        .on_click(cx.listener(|this, _, window, cx| {
5871                            this.workspace
5872                                .update(cx, |_, cx| {
5873                                    window.dispatch_action(workspace::Open.boxed_clone(), cx);
5874                                })
5875                                .log_err();
5876                        })),
5877                )
5878                .child(
5879                    h_flex()
5880                        .w_1_2()
5881                        .gap_2()
5882                        .child(Divider::horizontal())
5883                        .child(Label::new("or").size(LabelSize::XSmall).color(Color::Muted))
5884                        .child(Divider::horizontal()),
5885                )
5886                .child(
5887                    Button::new("clone_repo", "Clone Repository")
5888                        .full_width()
5889                        .on_click(cx.listener(|this, _, window, cx| {
5890                            this.workspace
5891                                .update(cx, |_, cx| {
5892                                    window.dispatch_action(git::Clone.boxed_clone(), cx);
5893                                })
5894                                .log_err();
5895                        })),
5896                )
5897                .when(is_local, |div| {
5898                    div.when(panel_settings.drag_and_drop, |div| {
5899                        div.drag_over::<ExternalPaths>(|style, _, _, cx| {
5900                            style.bg(cx.theme().colors().drop_target_background)
5901                        })
5902                        .on_drop(cx.listener(
5903                            move |this, external_paths: &ExternalPaths, window, cx| {
5904                                this.drag_target_entry = None;
5905                                this.hover_scroll_task.take();
5906                                if let Some(task) = this
5907                                    .workspace
5908                                    .update(cx, |workspace, cx| {
5909                                        workspace.open_workspace_for_paths(
5910                                            true,
5911                                            external_paths.paths().to_owned(),
5912                                            window,
5913                                            cx,
5914                                        )
5915                                    })
5916                                    .log_err()
5917                                {
5918                                    task.detach_and_log_err(cx);
5919                                }
5920                                cx.stop_propagation();
5921                            },
5922                        ))
5923                    })
5924                })
5925        }
5926    }
5927}
5928
5929impl Render for DraggedProjectEntryView {
5930    fn render(&mut self, _: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
5931        let ui_font = ThemeSettings::get_global(cx).ui_font.clone();
5932        h_flex()
5933            .font(ui_font)
5934            .pl(self.click_offset.x + px(12.))
5935            .pt(self.click_offset.y + px(12.))
5936            .child(
5937                div()
5938                    .flex()
5939                    .gap_1()
5940                    .items_center()
5941                    .py_1()
5942                    .px_2()
5943                    .rounded_lg()
5944                    .bg(cx.theme().colors().background)
5945                    .map(|this| {
5946                        if self.selections.len() > 1 && self.selections.contains(&self.selection) {
5947                            this.child(Label::new(format!("{} entries", self.selections.len())))
5948                        } else {
5949                            this.child(if let Some(icon) = &self.icon {
5950                                div().child(Icon::from_path(icon.clone()))
5951                            } else {
5952                                div()
5953                            })
5954                            .child(Label::new(self.filename.clone()))
5955                        }
5956                    }),
5957            )
5958    }
5959}
5960
5961impl EventEmitter<Event> for ProjectPanel {}
5962
5963impl EventEmitter<PanelEvent> for ProjectPanel {}
5964
5965impl Panel for ProjectPanel {
5966    fn position(&self, _: &Window, cx: &App) -> DockPosition {
5967        match ProjectPanelSettings::get_global(cx).dock {
5968            DockSide::Left => DockPosition::Left,
5969            DockSide::Right => DockPosition::Right,
5970        }
5971    }
5972
5973    fn position_is_valid(&self, position: DockPosition) -> bool {
5974        matches!(position, DockPosition::Left | DockPosition::Right)
5975    }
5976
5977    fn set_position(&mut self, position: DockPosition, _: &mut Window, cx: &mut Context<Self>) {
5978        settings::update_settings_file(self.fs.clone(), cx, move |settings, _| {
5979            let dock = match position {
5980                DockPosition::Left | DockPosition::Bottom => DockSide::Left,
5981                DockPosition::Right => DockSide::Right,
5982            };
5983            settings.project_panel.get_or_insert_default().dock = Some(dock);
5984        });
5985    }
5986
5987    fn size(&self, _: &Window, cx: &App) -> Pixels {
5988        self.width
5989            .unwrap_or_else(|| ProjectPanelSettings::get_global(cx).default_width)
5990    }
5991
5992    fn set_size(&mut self, size: Option<Pixels>, window: &mut Window, cx: &mut Context<Self>) {
5993        self.width = size;
5994        cx.notify();
5995        cx.defer_in(window, |this, _, cx| {
5996            this.serialize(cx);
5997        });
5998    }
5999
6000    fn icon(&self, _: &Window, cx: &App) -> Option<IconName> {
6001        ProjectPanelSettings::get_global(cx)
6002            .button
6003            .then_some(IconName::FileTree)
6004    }
6005
6006    fn icon_tooltip(&self, _window: &Window, _cx: &App) -> Option<&'static str> {
6007        Some("Project Panel")
6008    }
6009
6010    fn toggle_action(&self) -> Box<dyn Action> {
6011        Box::new(ToggleFocus)
6012    }
6013
6014    fn persistent_name() -> &'static str {
6015        "Project Panel"
6016    }
6017
6018    fn panel_key() -> &'static str {
6019        PROJECT_PANEL_KEY
6020    }
6021
6022    fn starts_open(&self, _: &Window, cx: &App) -> bool {
6023        if !ProjectPanelSettings::get_global(cx).starts_open {
6024            return false;
6025        }
6026
6027        let project = &self.project.read(cx);
6028        project.visible_worktrees(cx).any(|tree| {
6029            tree.read(cx)
6030                .root_entry()
6031                .is_some_and(|entry| entry.is_dir())
6032        })
6033    }
6034
6035    fn activation_priority(&self) -> u32 {
6036        0
6037    }
6038}
6039
6040impl Focusable for ProjectPanel {
6041    fn focus_handle(&self, _cx: &App) -> FocusHandle {
6042        self.focus_handle.clone()
6043    }
6044}
6045
6046impl ClipboardEntry {
6047    fn is_cut(&self) -> bool {
6048        matches!(self, Self::Cut { .. })
6049    }
6050
6051    fn items(&self) -> &BTreeSet<SelectedEntry> {
6052        match self {
6053            ClipboardEntry::Copied(entries) | ClipboardEntry::Cut(entries) => entries,
6054        }
6055    }
6056
6057    fn into_copy_entry(self) -> Self {
6058        match self {
6059            ClipboardEntry::Copied(_) => self,
6060            ClipboardEntry::Cut(entries) => ClipboardEntry::Copied(entries),
6061        }
6062    }
6063}
6064
6065fn cmp<T: AsRef<Entry>>(lhs: T, rhs: T) -> cmp::Ordering {
6066    let entry_a = lhs.as_ref();
6067    let entry_b = rhs.as_ref();
6068    util::paths::compare_rel_paths(
6069        (&entry_a.path, entry_a.is_file()),
6070        (&entry_b.path, entry_b.is_file()),
6071    )
6072}
6073
6074pub fn sort_worktree_entries(entries: &mut [impl AsRef<Entry>]) {
6075    entries.sort_by(|lhs, rhs| cmp(lhs, rhs));
6076}
6077
6078pub fn par_sort_worktree_entries(entries: &mut Vec<GitEntry>) {
6079    entries.par_sort_by(|lhs, rhs| cmp(lhs, rhs));
6080}
6081
6082#[cfg(test)]
6083mod project_panel_tests;