project_panel.rs

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