workspace.rs

    1pub mod dock;
    2pub mod history_manager;
    3pub mod invalid_item_view;
    4pub mod item;
    5mod modal_layer;
    6pub mod notifications;
    7pub mod pane;
    8pub mod pane_group;
    9mod path_list;
   10mod persistence;
   11pub mod searchable;
   12mod security_modal;
   13pub mod shared_screen;
   14mod status_bar;
   15pub mod tasks;
   16mod theme_preview;
   17mod toast_layer;
   18mod toolbar;
   19pub mod utility_pane;
   20pub mod welcome;
   21mod workspace_settings;
   22
   23pub use crate::notifications::NotificationFrame;
   24pub use dock::Panel;
   25pub use path_list::PathList;
   26pub use toast_layer::{ToastAction, ToastLayer, ToastView};
   27
   28use anyhow::{Context as _, Result, anyhow};
   29use call::{ActiveCall, call_settings::CallSettings};
   30use client::{
   31    ChannelId, Client, ErrorExt, Status, TypedEnvelope, UserStore,
   32    proto::{self, ErrorCode, PanelId, PeerId},
   33};
   34use collections::{HashMap, HashSet, hash_map};
   35use dock::{Dock, DockPosition, PanelButtons, PanelHandle, RESIZE_HANDLE_SIZE};
   36use feature_flags::{AgentV2FeatureFlag, FeatureFlagAppExt};
   37use futures::{
   38    Future, FutureExt, StreamExt,
   39    channel::{
   40        mpsc::{self, UnboundedReceiver, UnboundedSender},
   41        oneshot,
   42    },
   43    future::{Shared, try_join_all},
   44};
   45use gpui::{
   46    Action, AnyEntity, AnyView, AnyWeakView, App, AsyncApp, AsyncWindowContext, Bounds, Context,
   47    CursorStyle, Decorations, DragMoveEvent, Entity, EntityId, EventEmitter, FocusHandle,
   48    Focusable, Global, HitboxBehavior, Hsla, KeyContext, Keystroke, ManagedView, MouseButton,
   49    PathPromptOptions, Point, PromptLevel, Render, ResizeEdge, Size, Stateful, Subscription,
   50    SystemWindowTabController, Task, Tiling, WeakEntity, WindowBounds, WindowHandle, WindowId,
   51    WindowOptions, actions, canvas, point, relative, size, transparent_black,
   52};
   53pub use history_manager::*;
   54pub use item::{
   55    FollowableItem, FollowableItemHandle, Item, ItemHandle, ItemSettings, PreviewTabsSettings,
   56    ProjectItem, SerializableItem, SerializableItemHandle, WeakItemHandle,
   57};
   58use itertools::Itertools;
   59use language::{Buffer, LanguageRegistry, Rope, language_settings::all_language_settings};
   60pub use modal_layer::*;
   61use node_runtime::NodeRuntime;
   62use notifications::{
   63    DetachAndPromptErr, Notifications, dismiss_app_notification,
   64    simple_message_notification::MessageNotification,
   65};
   66pub use pane::*;
   67pub use pane_group::{
   68    ActivePaneDecorator, HANDLE_HITBOX_SIZE, Member, PaneAxis, PaneGroup, PaneRenderContext,
   69    SplitDirection,
   70};
   71use persistence::{DB, SerializedWindowBounds, model::SerializedWorkspace};
   72pub use persistence::{
   73    DB as WORKSPACE_DB, WorkspaceDb, delete_unloaded_items,
   74    model::{ItemId, SerializedWorkspaceLocation},
   75};
   76use postage::stream::Stream;
   77use project::{
   78    DirectoryLister, Project, ProjectEntryId, ProjectPath, ResolvedPath, Worktree, WorktreeId,
   79    WorktreeSettings,
   80    debugger::{breakpoint_store::BreakpointStoreEvent, session::ThreadStatus},
   81    project_settings::ProjectSettings,
   82    toolchain_store::ToolchainStoreEvent,
   83    trusted_worktrees::{RemoteHostLocation, TrustedWorktrees, TrustedWorktreesEvent},
   84};
   85use remote::{
   86    RemoteClientDelegate, RemoteConnection, RemoteConnectionOptions,
   87    remote_client::ConnectionIdentifier,
   88};
   89use schemars::JsonSchema;
   90use serde::Deserialize;
   91use session::AppSession;
   92use settings::{
   93    CenteredPaddingSettings, Settings, SettingsLocation, SettingsStore, update_settings_file,
   94};
   95use shared_screen::SharedScreen;
   96use sqlez::{
   97    bindable::{Bind, Column, StaticColumnCount},
   98    statement::Statement,
   99};
  100use status_bar::StatusBar;
  101pub use status_bar::StatusItemView;
  102use std::{
  103    any::TypeId,
  104    borrow::Cow,
  105    cell::RefCell,
  106    cmp,
  107    collections::{VecDeque, hash_map::DefaultHasher},
  108    env,
  109    hash::{Hash, Hasher},
  110    path::{Path, PathBuf},
  111    process::ExitStatus,
  112    rc::Rc,
  113    sync::{
  114        Arc, LazyLock, Weak,
  115        atomic::{AtomicBool, AtomicUsize},
  116    },
  117    time::Duration,
  118};
  119use task::{DebugScenario, SpawnInTerminal, TaskContext};
  120use theme::{ActiveTheme, GlobalTheme, SystemAppearance, ThemeSettings};
  121pub use toolbar::{Toolbar, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView};
  122pub use ui;
  123use ui::{Window, prelude::*};
  124use util::{
  125    ResultExt, TryFutureExt,
  126    paths::{PathStyle, SanitizedPath},
  127    rel_path::RelPath,
  128    serde::default_true,
  129};
  130use uuid::Uuid;
  131pub use workspace_settings::{
  132    AutosaveSetting, BottomDockLayout, RestoreOnStartupBehavior, StatusBarSettings, TabBarSettings,
  133    WorkspaceSettings,
  134};
  135use zed_actions::{Spawn, feedback::FileBugReport};
  136
  137use crate::{
  138    item::ItemBufferKind,
  139    notifications::NotificationId,
  140    utility_pane::{UTILITY_PANE_MIN_WIDTH, utility_slot_for_dock_position},
  141};
  142use crate::{
  143    persistence::{
  144        SerializedAxis,
  145        model::{DockData, DockStructure, SerializedItem, SerializedPane, SerializedPaneGroup},
  146    },
  147    security_modal::SecurityModal,
  148    utility_pane::{DraggedUtilityPane, UtilityPaneFrame, UtilityPaneSlot, UtilityPaneState},
  149};
  150
  151pub const SERIALIZATION_THROTTLE_TIME: Duration = Duration::from_millis(200);
  152
  153static ZED_WINDOW_SIZE: LazyLock<Option<Size<Pixels>>> = LazyLock::new(|| {
  154    env::var("ZED_WINDOW_SIZE")
  155        .ok()
  156        .as_deref()
  157        .and_then(parse_pixel_size_env_var)
  158});
  159
  160static ZED_WINDOW_POSITION: LazyLock<Option<Point<Pixels>>> = LazyLock::new(|| {
  161    env::var("ZED_WINDOW_POSITION")
  162        .ok()
  163        .as_deref()
  164        .and_then(parse_pixel_position_env_var)
  165});
  166
  167pub trait TerminalProvider {
  168    fn spawn(
  169        &self,
  170        task: SpawnInTerminal,
  171        window: &mut Window,
  172        cx: &mut App,
  173    ) -> Task<Option<Result<ExitStatus>>>;
  174}
  175
  176pub trait DebuggerProvider {
  177    // `active_buffer` is used to resolve build task's name against language-specific tasks.
  178    fn start_session(
  179        &self,
  180        definition: DebugScenario,
  181        task_context: TaskContext,
  182        active_buffer: Option<Entity<Buffer>>,
  183        worktree_id: Option<WorktreeId>,
  184        window: &mut Window,
  185        cx: &mut App,
  186    );
  187
  188    fn spawn_task_or_modal(
  189        &self,
  190        workspace: &mut Workspace,
  191        action: &Spawn,
  192        window: &mut Window,
  193        cx: &mut Context<Workspace>,
  194    );
  195
  196    fn task_scheduled(&self, cx: &mut App);
  197    fn debug_scenario_scheduled(&self, cx: &mut App);
  198    fn debug_scenario_scheduled_last(&self, cx: &App) -> bool;
  199
  200    fn active_thread_state(&self, cx: &App) -> Option<ThreadStatus>;
  201}
  202
  203actions!(
  204    workspace,
  205    [
  206        /// Activates the next pane in the workspace.
  207        ActivateNextPane,
  208        /// Activates the previous pane in the workspace.
  209        ActivatePreviousPane,
  210        /// Switches to the next window.
  211        ActivateNextWindow,
  212        /// Switches to the previous window.
  213        ActivatePreviousWindow,
  214        /// Adds a folder to the current project.
  215        AddFolderToProject,
  216        /// Opens the project switcher dropdown (only visible when multiple folders are open).
  217        SwitchProject,
  218        /// Clears all notifications.
  219        ClearAllNotifications,
  220        /// Clears all navigation history, including forward/backward navigation, recently opened files, and recently closed tabs. **This action is irreversible**.
  221        ClearNavigationHistory,
  222        /// Closes the active dock.
  223        CloseActiveDock,
  224        /// Closes all docks.
  225        CloseAllDocks,
  226        /// Toggles all docks.
  227        ToggleAllDocks,
  228        /// Closes the current window.
  229        CloseWindow,
  230        /// Opens the feedback dialog.
  231        Feedback,
  232        /// Follows the next collaborator in the session.
  233        FollowNextCollaborator,
  234        /// Moves the focused panel to the next position.
  235        MoveFocusedPanelToNextPosition,
  236        /// Creates a new file.
  237        NewFile,
  238        /// Creates a new file in a vertical split.
  239        NewFileSplitVertical,
  240        /// Creates a new file in a horizontal split.
  241        NewFileSplitHorizontal,
  242        /// Opens a new search.
  243        NewSearch,
  244        /// Opens a new window.
  245        NewWindow,
  246        /// Opens a file or directory.
  247        Open,
  248        /// Opens multiple files.
  249        OpenFiles,
  250        /// Opens the current location in terminal.
  251        OpenInTerminal,
  252        /// Opens the component preview.
  253        OpenComponentPreview,
  254        /// Reloads the active item.
  255        ReloadActiveItem,
  256        /// Resets the active dock to its default size.
  257        ResetActiveDockSize,
  258        /// Resets all open docks to their default sizes.
  259        ResetOpenDocksSize,
  260        /// Reloads the application
  261        Reload,
  262        /// Saves the current file with a new name.
  263        SaveAs,
  264        /// Saves without formatting.
  265        SaveWithoutFormat,
  266        /// Shuts down all debug adapters.
  267        ShutdownDebugAdapters,
  268        /// Suppresses the current notification.
  269        SuppressNotification,
  270        /// Toggles the bottom dock.
  271        ToggleBottomDock,
  272        /// Toggles centered layout mode.
  273        ToggleCenteredLayout,
  274        /// Toggles edit prediction feature globally for all files.
  275        ToggleEditPrediction,
  276        /// Toggles the left dock.
  277        ToggleLeftDock,
  278        /// Toggles the right dock.
  279        ToggleRightDock,
  280        /// Toggles zoom on the active pane.
  281        ToggleZoom,
  282        /// Toggles read-only mode for the active item (if supported by that item).
  283        ToggleReadOnlyFile,
  284        /// Zooms in on the active pane.
  285        ZoomIn,
  286        /// Zooms out of the active pane.
  287        ZoomOut,
  288        /// If any worktrees are in restricted mode, shows a modal with possible actions.
  289        /// If the modal is shown already, closes it without trusting any worktree.
  290        ToggleWorktreeSecurity,
  291        /// Clears all trusted worktrees, placing them in restricted mode on next open.
  292        /// Requires restart to take effect on already opened projects.
  293        ClearTrustedWorktrees,
  294        /// Stops following a collaborator.
  295        Unfollow,
  296        /// Restores the banner.
  297        RestoreBanner,
  298        /// Toggles expansion of the selected item.
  299        ToggleExpandItem,
  300    ]
  301);
  302
  303/// Activates a specific pane by its index.
  304#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  305#[action(namespace = workspace)]
  306pub struct ActivatePane(pub usize);
  307
  308/// Moves an item to a specific pane by index.
  309#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  310#[action(namespace = workspace)]
  311#[serde(deny_unknown_fields)]
  312pub struct MoveItemToPane {
  313    #[serde(default = "default_1")]
  314    pub destination: usize,
  315    #[serde(default = "default_true")]
  316    pub focus: bool,
  317    #[serde(default)]
  318    pub clone: bool,
  319}
  320
  321fn default_1() -> usize {
  322    1
  323}
  324
  325/// Moves an item to a pane in the specified direction.
  326#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  327#[action(namespace = workspace)]
  328#[serde(deny_unknown_fields)]
  329pub struct MoveItemToPaneInDirection {
  330    #[serde(default = "default_right")]
  331    pub direction: SplitDirection,
  332    #[serde(default = "default_true")]
  333    pub focus: bool,
  334    #[serde(default)]
  335    pub clone: bool,
  336}
  337
  338/// Creates a new file in a split of the desired direction.
  339#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  340#[action(namespace = workspace)]
  341#[serde(deny_unknown_fields)]
  342pub struct NewFileSplit(pub SplitDirection);
  343
  344fn default_right() -> SplitDirection {
  345    SplitDirection::Right
  346}
  347
  348/// Saves all open files in the workspace.
  349#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  350#[action(namespace = workspace)]
  351#[serde(deny_unknown_fields)]
  352pub struct SaveAll {
  353    #[serde(default)]
  354    pub save_intent: Option<SaveIntent>,
  355}
  356
  357/// Saves the current file with the specified options.
  358#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  359#[action(namespace = workspace)]
  360#[serde(deny_unknown_fields)]
  361pub struct Save {
  362    #[serde(default)]
  363    pub save_intent: Option<SaveIntent>,
  364}
  365
  366/// Closes all items and panes in the workspace.
  367#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  368#[action(namespace = workspace)]
  369#[serde(deny_unknown_fields)]
  370pub struct CloseAllItemsAndPanes {
  371    #[serde(default)]
  372    pub save_intent: Option<SaveIntent>,
  373}
  374
  375/// Closes all inactive tabs and panes in the workspace.
  376#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  377#[action(namespace = workspace)]
  378#[serde(deny_unknown_fields)]
  379pub struct CloseInactiveTabsAndPanes {
  380    #[serde(default)]
  381    pub save_intent: Option<SaveIntent>,
  382}
  383
  384/// Sends a sequence of keystrokes to the active element.
  385#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  386#[action(namespace = workspace)]
  387pub struct SendKeystrokes(pub String);
  388
  389actions!(
  390    project_symbols,
  391    [
  392        /// Toggles the project symbols search.
  393        #[action(name = "Toggle")]
  394        ToggleProjectSymbols
  395    ]
  396);
  397
  398/// Toggles the file finder interface.
  399#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  400#[action(namespace = file_finder, name = "Toggle")]
  401#[serde(deny_unknown_fields)]
  402pub struct ToggleFileFinder {
  403    #[serde(default)]
  404    pub separate_history: bool,
  405}
  406
  407/// Opens a new terminal in the center.
  408#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  409#[action(namespace = workspace)]
  410#[serde(deny_unknown_fields)]
  411pub struct NewCenterTerminal {
  412    /// If true, creates a local terminal even in remote projects.
  413    #[serde(default)]
  414    pub local: bool,
  415}
  416
  417/// Opens a new terminal.
  418#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  419#[action(namespace = workspace)]
  420#[serde(deny_unknown_fields)]
  421pub struct NewTerminal {
  422    /// If true, creates a local terminal even in remote projects.
  423    #[serde(default)]
  424    pub local: bool,
  425}
  426
  427/// Increases size of a currently focused dock by a given amount of pixels.
  428#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  429#[action(namespace = workspace)]
  430#[serde(deny_unknown_fields)]
  431pub struct IncreaseActiveDockSize {
  432    /// For 0px parameter, uses UI font size value.
  433    #[serde(default)]
  434    pub px: u32,
  435}
  436
  437/// Decreases size of a currently focused dock by a given amount of pixels.
  438#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  439#[action(namespace = workspace)]
  440#[serde(deny_unknown_fields)]
  441pub struct DecreaseActiveDockSize {
  442    /// For 0px parameter, uses UI font size value.
  443    #[serde(default)]
  444    pub px: u32,
  445}
  446
  447/// Increases size of all currently visible docks uniformly, by a given amount of pixels.
  448#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  449#[action(namespace = workspace)]
  450#[serde(deny_unknown_fields)]
  451pub struct IncreaseOpenDocksSize {
  452    /// For 0px parameter, uses UI font size value.
  453    #[serde(default)]
  454    pub px: u32,
  455}
  456
  457/// Decreases size of all currently visible docks uniformly, by a given amount of pixels.
  458#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  459#[action(namespace = workspace)]
  460#[serde(deny_unknown_fields)]
  461pub struct DecreaseOpenDocksSize {
  462    /// For 0px parameter, uses UI font size value.
  463    #[serde(default)]
  464    pub px: u32,
  465}
  466
  467actions!(
  468    workspace,
  469    [
  470        /// Activates the pane to the left.
  471        ActivatePaneLeft,
  472        /// Activates the pane to the right.
  473        ActivatePaneRight,
  474        /// Activates the pane above.
  475        ActivatePaneUp,
  476        /// Activates the pane below.
  477        ActivatePaneDown,
  478        /// Swaps the current pane with the one to the left.
  479        SwapPaneLeft,
  480        /// Swaps the current pane with the one to the right.
  481        SwapPaneRight,
  482        /// Swaps the current pane with the one above.
  483        SwapPaneUp,
  484        /// Swaps the current pane with the one below.
  485        SwapPaneDown,
  486        // Swaps the current pane with the first available adjacent pane (searching in order: below, above, right, left) and activates that pane.
  487        SwapPaneAdjacent,
  488        /// Move the current pane to be at the far left.
  489        MovePaneLeft,
  490        /// Move the current pane to be at the far right.
  491        MovePaneRight,
  492        /// Move the current pane to be at the very top.
  493        MovePaneUp,
  494        /// Move the current pane to be at the very bottom.
  495        MovePaneDown,
  496    ]
  497);
  498
  499#[derive(PartialEq, Eq, Debug)]
  500pub enum CloseIntent {
  501    /// Quit the program entirely.
  502    Quit,
  503    /// Close a window.
  504    CloseWindow,
  505    /// Replace the workspace in an existing window.
  506    ReplaceWindow,
  507}
  508
  509#[derive(Clone)]
  510pub struct Toast {
  511    id: NotificationId,
  512    msg: Cow<'static, str>,
  513    autohide: bool,
  514    on_click: Option<(Cow<'static, str>, Arc<dyn Fn(&mut Window, &mut App)>)>,
  515}
  516
  517impl Toast {
  518    pub fn new<I: Into<Cow<'static, str>>>(id: NotificationId, msg: I) -> Self {
  519        Toast {
  520            id,
  521            msg: msg.into(),
  522            on_click: None,
  523            autohide: false,
  524        }
  525    }
  526
  527    pub fn on_click<F, M>(mut self, message: M, on_click: F) -> Self
  528    where
  529        M: Into<Cow<'static, str>>,
  530        F: Fn(&mut Window, &mut App) + 'static,
  531    {
  532        self.on_click = Some((message.into(), Arc::new(on_click)));
  533        self
  534    }
  535
  536    pub fn autohide(mut self) -> Self {
  537        self.autohide = true;
  538        self
  539    }
  540}
  541
  542impl PartialEq for Toast {
  543    fn eq(&self, other: &Self) -> bool {
  544        self.id == other.id
  545            && self.msg == other.msg
  546            && self.on_click.is_some() == other.on_click.is_some()
  547    }
  548}
  549
  550/// Opens a new terminal with the specified working directory.
  551#[derive(Debug, Default, Clone, Deserialize, PartialEq, JsonSchema, Action)]
  552#[action(namespace = workspace)]
  553#[serde(deny_unknown_fields)]
  554pub struct OpenTerminal {
  555    pub working_directory: PathBuf,
  556    /// If true, creates a local terminal even in remote projects.
  557    #[serde(default)]
  558    pub local: bool,
  559}
  560
  561#[derive(Clone, Copy, Debug, Default, Hash, PartialEq, Eq, PartialOrd, Ord)]
  562pub struct WorkspaceId(i64);
  563
  564impl StaticColumnCount for WorkspaceId {}
  565impl Bind for WorkspaceId {
  566    fn bind(&self, statement: &Statement, start_index: i32) -> Result<i32> {
  567        self.0.bind(statement, start_index)
  568    }
  569}
  570impl Column for WorkspaceId {
  571    fn column(statement: &mut Statement, start_index: i32) -> Result<(Self, i32)> {
  572        i64::column(statement, start_index)
  573            .map(|(i, next_index)| (Self(i), next_index))
  574            .with_context(|| format!("Failed to read WorkspaceId at index {start_index}"))
  575    }
  576}
  577impl From<WorkspaceId> for i64 {
  578    fn from(val: WorkspaceId) -> Self {
  579        val.0
  580    }
  581}
  582
  583fn prompt_and_open_paths(app_state: Arc<AppState>, options: PathPromptOptions, cx: &mut App) {
  584    let paths = cx.prompt_for_paths(options);
  585    cx.spawn(
  586        async move |cx| match paths.await.anyhow().and_then(|res| res) {
  587            Ok(Some(paths)) => {
  588                cx.update(|cx| {
  589                    open_paths(&paths, app_state, OpenOptions::default(), cx).detach_and_log_err(cx)
  590                });
  591            }
  592            Ok(None) => {}
  593            Err(err) => {
  594                util::log_err(&err);
  595                cx.update(|cx| {
  596                    if let Some(workspace_window) = cx
  597                        .active_window()
  598                        .and_then(|window| window.downcast::<Workspace>())
  599                    {
  600                        workspace_window
  601                            .update(cx, |workspace, _, cx| {
  602                                workspace.show_portal_error(err.to_string(), cx);
  603                            })
  604                            .ok();
  605                    }
  606                });
  607            }
  608        },
  609    )
  610    .detach();
  611}
  612
  613pub fn init(app_state: Arc<AppState>, cx: &mut App) {
  614    component::init();
  615    theme_preview::init(cx);
  616    toast_layer::init(cx);
  617    history_manager::init(cx);
  618
  619    cx.on_action(|_: &CloseWindow, cx| Workspace::close_global(cx))
  620        .on_action(|_: &Reload, cx| reload(cx))
  621        .on_action({
  622            let app_state = Arc::downgrade(&app_state);
  623            move |_: &Open, cx: &mut App| {
  624                if let Some(app_state) = app_state.upgrade() {
  625                    prompt_and_open_paths(
  626                        app_state,
  627                        PathPromptOptions {
  628                            files: true,
  629                            directories: true,
  630                            multiple: true,
  631                            prompt: None,
  632                        },
  633                        cx,
  634                    );
  635                }
  636            }
  637        })
  638        .on_action({
  639            let app_state = Arc::downgrade(&app_state);
  640            move |_: &OpenFiles, cx: &mut App| {
  641                let directories = cx.can_select_mixed_files_and_dirs();
  642                if let Some(app_state) = app_state.upgrade() {
  643                    prompt_and_open_paths(
  644                        app_state,
  645                        PathPromptOptions {
  646                            files: true,
  647                            directories,
  648                            multiple: true,
  649                            prompt: None,
  650                        },
  651                        cx,
  652                    );
  653                }
  654            }
  655        });
  656}
  657
  658type BuildProjectItemFn =
  659    fn(AnyEntity, Entity<Project>, Option<&Pane>, &mut Window, &mut App) -> Box<dyn ItemHandle>;
  660
  661type BuildProjectItemForPathFn =
  662    fn(
  663        &Entity<Project>,
  664        &ProjectPath,
  665        &mut Window,
  666        &mut App,
  667    ) -> Option<Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>>>;
  668
  669#[derive(Clone, Default)]
  670struct ProjectItemRegistry {
  671    build_project_item_fns_by_type: HashMap<TypeId, BuildProjectItemFn>,
  672    build_project_item_for_path_fns: Vec<BuildProjectItemForPathFn>,
  673}
  674
  675impl ProjectItemRegistry {
  676    fn register<T: ProjectItem>(&mut self) {
  677        self.build_project_item_fns_by_type.insert(
  678            TypeId::of::<T::Item>(),
  679            |item, project, pane, window, cx| {
  680                let item = item.downcast().unwrap();
  681                Box::new(cx.new(|cx| T::for_project_item(project, pane, item, window, cx)))
  682                    as Box<dyn ItemHandle>
  683            },
  684        );
  685        self.build_project_item_for_path_fns
  686            .push(|project, project_path, window, cx| {
  687                let project_path = project_path.clone();
  688                let is_file = project
  689                    .read(cx)
  690                    .entry_for_path(&project_path, cx)
  691                    .is_some_and(|entry| entry.is_file());
  692                let entry_abs_path = project.read(cx).absolute_path(&project_path, cx);
  693                let is_local = project.read(cx).is_local();
  694                let project_item =
  695                    <T::Item as project::ProjectItem>::try_open(project, &project_path, cx)?;
  696                let project = project.clone();
  697                Some(window.spawn(cx, async move |cx| {
  698                    match project_item.await.with_context(|| {
  699                        format!(
  700                            "opening project path {:?}",
  701                            entry_abs_path.as_deref().unwrap_or(&project_path.path.as_std_path())
  702                        )
  703                    }) {
  704                        Ok(project_item) => {
  705                            let project_item = project_item;
  706                            let project_entry_id: Option<ProjectEntryId> =
  707                                project_item.read_with(cx, project::ProjectItem::entry_id);
  708                            let build_workspace_item = Box::new(
  709                                |pane: &mut Pane, window: &mut Window, cx: &mut Context<Pane>| {
  710                                    Box::new(cx.new(|cx| {
  711                                        T::for_project_item(
  712                                            project,
  713                                            Some(pane),
  714                                            project_item,
  715                                            window,
  716                                            cx,
  717                                        )
  718                                    })) as Box<dyn ItemHandle>
  719                                },
  720                            ) as Box<_>;
  721                            Ok((project_entry_id, build_workspace_item))
  722                        }
  723                        Err(e) => {
  724                            log::warn!("Failed to open a project item: {e:#}");
  725                            if e.error_code() == ErrorCode::Internal {
  726                                if let Some(abs_path) =
  727                                    entry_abs_path.as_deref().filter(|_| is_file)
  728                                {
  729                                    if let Some(broken_project_item_view) =
  730                                        cx.update(|window, cx| {
  731                                            T::for_broken_project_item(
  732                                                abs_path, is_local, &e, window, cx,
  733                                            )
  734                                        })?
  735                                    {
  736                                        let build_workspace_item = Box::new(
  737                                            move |_: &mut Pane, _: &mut Window, cx: &mut Context<Pane>| {
  738                                                cx.new(|_| broken_project_item_view).boxed_clone()
  739                                            },
  740                                        )
  741                                        as Box<_>;
  742                                        return Ok((None, build_workspace_item));
  743                                    }
  744                                }
  745                            }
  746                            Err(e)
  747                        }
  748                    }
  749                }))
  750            });
  751    }
  752
  753    fn open_path(
  754        &self,
  755        project: &Entity<Project>,
  756        path: &ProjectPath,
  757        window: &mut Window,
  758        cx: &mut App,
  759    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
  760        let Some(open_project_item) = self
  761            .build_project_item_for_path_fns
  762            .iter()
  763            .rev()
  764            .find_map(|open_project_item| open_project_item(project, path, window, cx))
  765        else {
  766            return Task::ready(Err(anyhow!("cannot open file {:?}", path.path)));
  767        };
  768        open_project_item
  769    }
  770
  771    fn build_item<T: project::ProjectItem>(
  772        &self,
  773        item: Entity<T>,
  774        project: Entity<Project>,
  775        pane: Option<&Pane>,
  776        window: &mut Window,
  777        cx: &mut App,
  778    ) -> Option<Box<dyn ItemHandle>> {
  779        let build = self
  780            .build_project_item_fns_by_type
  781            .get(&TypeId::of::<T>())?;
  782        Some(build(item.into_any(), project, pane, window, cx))
  783    }
  784}
  785
  786type WorkspaceItemBuilder =
  787    Box<dyn FnOnce(&mut Pane, &mut Window, &mut Context<Pane>) -> Box<dyn ItemHandle>>;
  788
  789impl Global for ProjectItemRegistry {}
  790
  791/// Registers a [ProjectItem] for the app. When opening a file, all the registered
  792/// items will get a chance to open the file, starting from the project item that
  793/// was added last.
  794pub fn register_project_item<I: ProjectItem>(cx: &mut App) {
  795    cx.default_global::<ProjectItemRegistry>().register::<I>();
  796}
  797
  798#[derive(Default)]
  799pub struct FollowableViewRegistry(HashMap<TypeId, FollowableViewDescriptor>);
  800
  801struct FollowableViewDescriptor {
  802    from_state_proto: fn(
  803        Entity<Workspace>,
  804        ViewId,
  805        &mut Option<proto::view::Variant>,
  806        &mut Window,
  807        &mut App,
  808    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>>,
  809    to_followable_view: fn(&AnyView) -> Box<dyn FollowableItemHandle>,
  810}
  811
  812impl Global for FollowableViewRegistry {}
  813
  814impl FollowableViewRegistry {
  815    pub fn register<I: FollowableItem>(cx: &mut App) {
  816        cx.default_global::<Self>().0.insert(
  817            TypeId::of::<I>(),
  818            FollowableViewDescriptor {
  819                from_state_proto: |workspace, id, state, window, cx| {
  820                    I::from_state_proto(workspace, id, state, window, cx).map(|task| {
  821                        cx.foreground_executor()
  822                            .spawn(async move { Ok(Box::new(task.await?) as Box<_>) })
  823                    })
  824                },
  825                to_followable_view: |view| Box::new(view.clone().downcast::<I>().unwrap()),
  826            },
  827        );
  828    }
  829
  830    pub fn from_state_proto(
  831        workspace: Entity<Workspace>,
  832        view_id: ViewId,
  833        mut state: Option<proto::view::Variant>,
  834        window: &mut Window,
  835        cx: &mut App,
  836    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>> {
  837        cx.update_default_global(|this: &mut Self, cx| {
  838            this.0.values().find_map(|descriptor| {
  839                (descriptor.from_state_proto)(workspace.clone(), view_id, &mut state, window, cx)
  840            })
  841        })
  842    }
  843
  844    pub fn to_followable_view(
  845        view: impl Into<AnyView>,
  846        cx: &App,
  847    ) -> Option<Box<dyn FollowableItemHandle>> {
  848        let this = cx.try_global::<Self>()?;
  849        let view = view.into();
  850        let descriptor = this.0.get(&view.entity_type())?;
  851        Some((descriptor.to_followable_view)(&view))
  852    }
  853}
  854
  855#[derive(Copy, Clone)]
  856struct SerializableItemDescriptor {
  857    deserialize: fn(
  858        Entity<Project>,
  859        WeakEntity<Workspace>,
  860        WorkspaceId,
  861        ItemId,
  862        &mut Window,
  863        &mut Context<Pane>,
  864    ) -> Task<Result<Box<dyn ItemHandle>>>,
  865    cleanup: fn(WorkspaceId, Vec<ItemId>, &mut Window, &mut App) -> Task<Result<()>>,
  866    view_to_serializable_item: fn(AnyView) -> Box<dyn SerializableItemHandle>,
  867}
  868
  869#[derive(Default)]
  870struct SerializableItemRegistry {
  871    descriptors_by_kind: HashMap<Arc<str>, SerializableItemDescriptor>,
  872    descriptors_by_type: HashMap<TypeId, SerializableItemDescriptor>,
  873}
  874
  875impl Global for SerializableItemRegistry {}
  876
  877impl SerializableItemRegistry {
  878    fn deserialize(
  879        item_kind: &str,
  880        project: Entity<Project>,
  881        workspace: WeakEntity<Workspace>,
  882        workspace_id: WorkspaceId,
  883        item_item: ItemId,
  884        window: &mut Window,
  885        cx: &mut Context<Pane>,
  886    ) -> Task<Result<Box<dyn ItemHandle>>> {
  887        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  888            return Task::ready(Err(anyhow!(
  889                "cannot deserialize {}, descriptor not found",
  890                item_kind
  891            )));
  892        };
  893
  894        (descriptor.deserialize)(project, workspace, workspace_id, item_item, window, cx)
  895    }
  896
  897    fn cleanup(
  898        item_kind: &str,
  899        workspace_id: WorkspaceId,
  900        loaded_items: Vec<ItemId>,
  901        window: &mut Window,
  902        cx: &mut App,
  903    ) -> Task<Result<()>> {
  904        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  905            return Task::ready(Err(anyhow!(
  906                "cannot cleanup {}, descriptor not found",
  907                item_kind
  908            )));
  909        };
  910
  911        (descriptor.cleanup)(workspace_id, loaded_items, window, cx)
  912    }
  913
  914    fn view_to_serializable_item_handle(
  915        view: AnyView,
  916        cx: &App,
  917    ) -> Option<Box<dyn SerializableItemHandle>> {
  918        let this = cx.try_global::<Self>()?;
  919        let descriptor = this.descriptors_by_type.get(&view.entity_type())?;
  920        Some((descriptor.view_to_serializable_item)(view))
  921    }
  922
  923    fn descriptor(item_kind: &str, cx: &App) -> Option<SerializableItemDescriptor> {
  924        let this = cx.try_global::<Self>()?;
  925        this.descriptors_by_kind.get(item_kind).copied()
  926    }
  927}
  928
  929pub fn register_serializable_item<I: SerializableItem>(cx: &mut App) {
  930    let serialized_item_kind = I::serialized_item_kind();
  931
  932    let registry = cx.default_global::<SerializableItemRegistry>();
  933    let descriptor = SerializableItemDescriptor {
  934        deserialize: |project, workspace, workspace_id, item_id, window, cx| {
  935            let task = I::deserialize(project, workspace, workspace_id, item_id, window, cx);
  936            cx.foreground_executor()
  937                .spawn(async { Ok(Box::new(task.await?) as Box<_>) })
  938        },
  939        cleanup: |workspace_id, loaded_items, window, cx| {
  940            I::cleanup(workspace_id, loaded_items, window, cx)
  941        },
  942        view_to_serializable_item: |view| Box::new(view.downcast::<I>().unwrap()),
  943    };
  944    registry
  945        .descriptors_by_kind
  946        .insert(Arc::from(serialized_item_kind), descriptor);
  947    registry
  948        .descriptors_by_type
  949        .insert(TypeId::of::<I>(), descriptor);
  950}
  951
  952pub struct AppState {
  953    pub languages: Arc<LanguageRegistry>,
  954    pub client: Arc<Client>,
  955    pub user_store: Entity<UserStore>,
  956    pub workspace_store: Entity<WorkspaceStore>,
  957    pub fs: Arc<dyn fs::Fs>,
  958    pub build_window_options: fn(Option<Uuid>, &mut App) -> WindowOptions,
  959    pub node_runtime: NodeRuntime,
  960    pub session: Entity<AppSession>,
  961}
  962
  963struct GlobalAppState(Weak<AppState>);
  964
  965impl Global for GlobalAppState {}
  966
  967pub struct WorkspaceStore {
  968    workspaces: HashSet<WindowHandle<Workspace>>,
  969    client: Arc<Client>,
  970    _subscriptions: Vec<client::Subscription>,
  971}
  972
  973#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq, PartialOrd, Ord)]
  974pub enum CollaboratorId {
  975    PeerId(PeerId),
  976    Agent,
  977}
  978
  979impl From<PeerId> for CollaboratorId {
  980    fn from(peer_id: PeerId) -> Self {
  981        CollaboratorId::PeerId(peer_id)
  982    }
  983}
  984
  985impl From<&PeerId> for CollaboratorId {
  986    fn from(peer_id: &PeerId) -> Self {
  987        CollaboratorId::PeerId(*peer_id)
  988    }
  989}
  990
  991#[derive(PartialEq, Eq, PartialOrd, Ord, Debug)]
  992struct Follower {
  993    project_id: Option<u64>,
  994    peer_id: PeerId,
  995}
  996
  997impl AppState {
  998    #[track_caller]
  999    pub fn global(cx: &App) -> Weak<Self> {
 1000        cx.global::<GlobalAppState>().0.clone()
 1001    }
 1002    pub fn try_global(cx: &App) -> Option<Weak<Self>> {
 1003        cx.try_global::<GlobalAppState>()
 1004            .map(|state| state.0.clone())
 1005    }
 1006    pub fn set_global(state: Weak<AppState>, cx: &mut App) {
 1007        cx.set_global(GlobalAppState(state));
 1008    }
 1009
 1010    #[cfg(any(test, feature = "test-support"))]
 1011    pub fn test(cx: &mut App) -> Arc<Self> {
 1012        use fs::Fs;
 1013        use node_runtime::NodeRuntime;
 1014        use session::Session;
 1015        use settings::SettingsStore;
 1016
 1017        if !cx.has_global::<SettingsStore>() {
 1018            let settings_store = SettingsStore::test(cx);
 1019            cx.set_global(settings_store);
 1020        }
 1021
 1022        let fs = fs::FakeFs::new(cx.background_executor().clone());
 1023        <dyn Fs>::set_global(fs.clone(), cx);
 1024        let languages = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));
 1025        let clock = Arc::new(clock::FakeSystemClock::new());
 1026        let http_client = http_client::FakeHttpClient::with_404_response();
 1027        let client = Client::new(clock, http_client, cx);
 1028        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 1029        let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
 1030        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 1031
 1032        theme::init(theme::LoadThemes::JustBase, cx);
 1033        client::init(&client, cx);
 1034
 1035        Arc::new(Self {
 1036            client,
 1037            fs,
 1038            languages,
 1039            user_store,
 1040            workspace_store,
 1041            node_runtime: NodeRuntime::unavailable(),
 1042            build_window_options: |_, _| Default::default(),
 1043            session,
 1044        })
 1045    }
 1046}
 1047
 1048struct DelayedDebouncedEditAction {
 1049    task: Option<Task<()>>,
 1050    cancel_channel: Option<oneshot::Sender<()>>,
 1051}
 1052
 1053impl DelayedDebouncedEditAction {
 1054    fn new() -> DelayedDebouncedEditAction {
 1055        DelayedDebouncedEditAction {
 1056            task: None,
 1057            cancel_channel: None,
 1058        }
 1059    }
 1060
 1061    fn fire_new<F>(
 1062        &mut self,
 1063        delay: Duration,
 1064        window: &mut Window,
 1065        cx: &mut Context<Workspace>,
 1066        func: F,
 1067    ) where
 1068        F: 'static
 1069            + Send
 1070            + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> Task<Result<()>>,
 1071    {
 1072        if let Some(channel) = self.cancel_channel.take() {
 1073            _ = channel.send(());
 1074        }
 1075
 1076        let (sender, mut receiver) = oneshot::channel::<()>();
 1077        self.cancel_channel = Some(sender);
 1078
 1079        let previous_task = self.task.take();
 1080        self.task = Some(cx.spawn_in(window, async move |workspace, cx| {
 1081            let mut timer = cx.background_executor().timer(delay).fuse();
 1082            if let Some(previous_task) = previous_task {
 1083                previous_task.await;
 1084            }
 1085
 1086            futures::select_biased! {
 1087                _ = receiver => return,
 1088                    _ = timer => {}
 1089            }
 1090
 1091            if let Some(result) = workspace
 1092                .update_in(cx, |workspace, window, cx| (func)(workspace, window, cx))
 1093                .log_err()
 1094            {
 1095                result.await.log_err();
 1096            }
 1097        }));
 1098    }
 1099}
 1100
 1101pub enum Event {
 1102    PaneAdded(Entity<Pane>),
 1103    PaneRemoved,
 1104    ItemAdded {
 1105        item: Box<dyn ItemHandle>,
 1106    },
 1107    ActiveItemChanged,
 1108    ItemRemoved {
 1109        item_id: EntityId,
 1110    },
 1111    UserSavedItem {
 1112        pane: WeakEntity<Pane>,
 1113        item: Box<dyn WeakItemHandle>,
 1114        save_intent: SaveIntent,
 1115    },
 1116    ContactRequestedJoin(u64),
 1117    WorkspaceCreated(WeakEntity<Workspace>),
 1118    OpenBundledFile {
 1119        text: Cow<'static, str>,
 1120        title: &'static str,
 1121        language: &'static str,
 1122    },
 1123    ZoomChanged,
 1124    ModalOpened,
 1125}
 1126
 1127#[derive(Debug)]
 1128pub enum OpenVisible {
 1129    All,
 1130    None,
 1131    OnlyFiles,
 1132    OnlyDirectories,
 1133}
 1134
 1135enum WorkspaceLocation {
 1136    // Valid local paths or SSH project to serialize
 1137    Location(SerializedWorkspaceLocation, PathList),
 1138    // No valid location found hence clear session id
 1139    DetachFromSession,
 1140    // No valid location found to serialize
 1141    None,
 1142}
 1143
 1144type PromptForNewPath = Box<
 1145    dyn Fn(
 1146        &mut Workspace,
 1147        DirectoryLister,
 1148        &mut Window,
 1149        &mut Context<Workspace>,
 1150    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1151>;
 1152
 1153type PromptForOpenPath = Box<
 1154    dyn Fn(
 1155        &mut Workspace,
 1156        DirectoryLister,
 1157        &mut Window,
 1158        &mut Context<Workspace>,
 1159    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1160>;
 1161
 1162#[derive(Default)]
 1163struct DispatchingKeystrokes {
 1164    dispatched: HashSet<Vec<Keystroke>>,
 1165    queue: VecDeque<Keystroke>,
 1166    task: Option<Shared<Task<()>>>,
 1167}
 1168
 1169/// Collects everything project-related for a certain window opened.
 1170/// In some way, is a counterpart of a window, as the [`WindowHandle`] could be downcast into `Workspace`.
 1171///
 1172/// A `Workspace` usually consists of 1 or more projects, a central pane group, 3 docks and a status bar.
 1173/// The `Workspace` owns everybody's state and serves as a default, "global context",
 1174/// that can be used to register a global action to be triggered from any place in the window.
 1175pub struct Workspace {
 1176    weak_self: WeakEntity<Self>,
 1177    workspace_actions: Vec<Box<dyn Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div>>,
 1178    zoomed: Option<AnyWeakView>,
 1179    previous_dock_drag_coordinates: Option<Point<Pixels>>,
 1180    zoomed_position: Option<DockPosition>,
 1181    center: PaneGroup,
 1182    left_dock: Entity<Dock>,
 1183    bottom_dock: Entity<Dock>,
 1184    right_dock: Entity<Dock>,
 1185    panes: Vec<Entity<Pane>>,
 1186    active_worktree_override: Option<WorktreeId>,
 1187    panes_by_item: HashMap<EntityId, WeakEntity<Pane>>,
 1188    active_pane: Entity<Pane>,
 1189    last_active_center_pane: Option<WeakEntity<Pane>>,
 1190    last_active_view_id: Option<proto::ViewId>,
 1191    status_bar: Entity<StatusBar>,
 1192    modal_layer: Entity<ModalLayer>,
 1193    toast_layer: Entity<ToastLayer>,
 1194    titlebar_item: Option<AnyView>,
 1195    notifications: Notifications,
 1196    suppressed_notifications: HashSet<NotificationId>,
 1197    project: Entity<Project>,
 1198    follower_states: HashMap<CollaboratorId, FollowerState>,
 1199    last_leaders_by_pane: HashMap<WeakEntity<Pane>, CollaboratorId>,
 1200    window_edited: bool,
 1201    last_window_title: Option<String>,
 1202    dirty_items: HashMap<EntityId, Subscription>,
 1203    active_call: Option<(Entity<ActiveCall>, Vec<Subscription>)>,
 1204    leader_updates_tx: mpsc::UnboundedSender<(PeerId, proto::UpdateFollowers)>,
 1205    database_id: Option<WorkspaceId>,
 1206    app_state: Arc<AppState>,
 1207    dispatching_keystrokes: Rc<RefCell<DispatchingKeystrokes>>,
 1208    _subscriptions: Vec<Subscription>,
 1209    _apply_leader_updates: Task<Result<()>>,
 1210    _observe_current_user: Task<Result<()>>,
 1211    _schedule_serialize_workspace: Option<Task<()>>,
 1212    _schedule_serialize_ssh_paths: Option<Task<()>>,
 1213    pane_history_timestamp: Arc<AtomicUsize>,
 1214    bounds: Bounds<Pixels>,
 1215    pub centered_layout: bool,
 1216    bounds_save_task_queued: Option<Task<()>>,
 1217    on_prompt_for_new_path: Option<PromptForNewPath>,
 1218    on_prompt_for_open_path: Option<PromptForOpenPath>,
 1219    terminal_provider: Option<Box<dyn TerminalProvider>>,
 1220    debugger_provider: Option<Arc<dyn DebuggerProvider>>,
 1221    serializable_items_tx: UnboundedSender<Box<dyn SerializableItemHandle>>,
 1222    _items_serializer: Task<Result<()>>,
 1223    session_id: Option<String>,
 1224    scheduled_tasks: Vec<Task<()>>,
 1225    last_open_dock_positions: Vec<DockPosition>,
 1226    removing: bool,
 1227    utility_panes: UtilityPaneState,
 1228}
 1229
 1230impl EventEmitter<Event> for Workspace {}
 1231
 1232#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
 1233pub struct ViewId {
 1234    pub creator: CollaboratorId,
 1235    pub id: u64,
 1236}
 1237
 1238pub struct FollowerState {
 1239    center_pane: Entity<Pane>,
 1240    dock_pane: Option<Entity<Pane>>,
 1241    active_view_id: Option<ViewId>,
 1242    items_by_leader_view_id: HashMap<ViewId, FollowerView>,
 1243}
 1244
 1245struct FollowerView {
 1246    view: Box<dyn FollowableItemHandle>,
 1247    location: Option<proto::PanelId>,
 1248}
 1249
 1250impl Workspace {
 1251    pub fn new(
 1252        workspace_id: Option<WorkspaceId>,
 1253        project: Entity<Project>,
 1254        app_state: Arc<AppState>,
 1255        window: &mut Window,
 1256        cx: &mut Context<Self>,
 1257    ) -> Self {
 1258        if let Some(trusted_worktrees) = TrustedWorktrees::try_get_global(cx) {
 1259            cx.subscribe(&trusted_worktrees, |_, worktrees_store, e, cx| {
 1260                if let TrustedWorktreesEvent::Trusted(..) = e {
 1261                    // Do not persist auto trusted worktrees
 1262                    if !ProjectSettings::get_global(cx).session.trust_all_worktrees {
 1263                        worktrees_store.update(cx, |worktrees_store, cx| {
 1264                            worktrees_store.schedule_serialization(
 1265                                cx,
 1266                                |new_trusted_worktrees, cx| {
 1267                                    let timeout =
 1268                                        cx.background_executor().timer(SERIALIZATION_THROTTLE_TIME);
 1269                                    cx.background_spawn(async move {
 1270                                        timeout.await;
 1271                                        persistence::DB
 1272                                            .save_trusted_worktrees(new_trusted_worktrees)
 1273                                            .await
 1274                                            .log_err();
 1275                                    })
 1276                                },
 1277                            )
 1278                        });
 1279                    }
 1280                }
 1281            })
 1282            .detach();
 1283
 1284            cx.observe_global::<SettingsStore>(|_, cx| {
 1285                if ProjectSettings::get_global(cx).session.trust_all_worktrees {
 1286                    if let Some(trusted_worktrees) = TrustedWorktrees::try_get_global(cx) {
 1287                        trusted_worktrees.update(cx, |trusted_worktrees, cx| {
 1288                            trusted_worktrees.auto_trust_all(cx);
 1289                        })
 1290                    }
 1291                }
 1292            })
 1293            .detach();
 1294        }
 1295
 1296        cx.subscribe_in(&project, window, move |this, _, event, window, cx| {
 1297            match event {
 1298                project::Event::RemoteIdChanged(_) => {
 1299                    this.update_window_title(window, cx);
 1300                }
 1301
 1302                project::Event::CollaboratorLeft(peer_id) => {
 1303                    this.collaborator_left(*peer_id, window, cx);
 1304                }
 1305
 1306                project::Event::WorktreeRemoved(_) | project::Event::WorktreeAdded(..) => {
 1307                    this.update_window_title(window, cx);
 1308                    this.serialize_workspace(window, cx);
 1309                    this.update_history(cx);
 1310                }
 1311
 1312                project::Event::WorktreeUpdatedEntries(..) => {
 1313                    this.update_window_title(window, cx);
 1314                    this.serialize_workspace(window, cx);
 1315                }
 1316
 1317                project::Event::DisconnectedFromHost => {
 1318                    this.update_window_edited(window, cx);
 1319                    let leaders_to_unfollow =
 1320                        this.follower_states.keys().copied().collect::<Vec<_>>();
 1321                    for leader_id in leaders_to_unfollow {
 1322                        this.unfollow(leader_id, window, cx);
 1323                    }
 1324                }
 1325
 1326                project::Event::DisconnectedFromRemote => {
 1327                    this.update_window_edited(window, cx);
 1328                }
 1329
 1330                project::Event::Closed => {
 1331                    window.remove_window();
 1332                }
 1333
 1334                project::Event::DeletedEntry(_, entry_id) => {
 1335                    for pane in this.panes.iter() {
 1336                        pane.update(cx, |pane, cx| {
 1337                            pane.handle_deleted_project_item(*entry_id, window, cx)
 1338                        });
 1339                    }
 1340                }
 1341
 1342                project::Event::Toast {
 1343                    notification_id,
 1344                    message,
 1345                } => this.show_notification(
 1346                    NotificationId::named(notification_id.clone()),
 1347                    cx,
 1348                    |cx| cx.new(|cx| MessageNotification::new(message.clone(), cx)),
 1349                ),
 1350
 1351                project::Event::HideToast { notification_id } => {
 1352                    this.dismiss_notification(&NotificationId::named(notification_id.clone()), cx)
 1353                }
 1354
 1355                project::Event::LanguageServerPrompt(request) => {
 1356                    struct LanguageServerPrompt;
 1357
 1358                    let mut hasher = DefaultHasher::new();
 1359                    request.lsp_name.as_str().hash(&mut hasher);
 1360                    let id = hasher.finish();
 1361
 1362                    this.show_notification(
 1363                        NotificationId::composite::<LanguageServerPrompt>(id as usize),
 1364                        cx,
 1365                        |cx| {
 1366                            cx.new(|cx| {
 1367                                notifications::LanguageServerPrompt::new(request.clone(), cx)
 1368                            })
 1369                        },
 1370                    );
 1371                }
 1372
 1373                project::Event::AgentLocationChanged => {
 1374                    this.handle_agent_location_changed(window, cx)
 1375                }
 1376
 1377                _ => {}
 1378            }
 1379            cx.notify()
 1380        })
 1381        .detach();
 1382
 1383        cx.subscribe_in(
 1384            &project.read(cx).breakpoint_store(),
 1385            window,
 1386            |workspace, _, event, window, cx| match event {
 1387                BreakpointStoreEvent::BreakpointsUpdated(_, _)
 1388                | BreakpointStoreEvent::BreakpointsCleared(_) => {
 1389                    workspace.serialize_workspace(window, cx);
 1390                }
 1391                BreakpointStoreEvent::SetDebugLine | BreakpointStoreEvent::ClearDebugLines => {}
 1392            },
 1393        )
 1394        .detach();
 1395        if let Some(toolchain_store) = project.read(cx).toolchain_store() {
 1396            cx.subscribe_in(
 1397                &toolchain_store,
 1398                window,
 1399                |workspace, _, event, window, cx| match event {
 1400                    ToolchainStoreEvent::CustomToolchainsModified => {
 1401                        workspace.serialize_workspace(window, cx);
 1402                    }
 1403                    _ => {}
 1404                },
 1405            )
 1406            .detach();
 1407        }
 1408
 1409        cx.on_focus_lost(window, |this, window, cx| {
 1410            let focus_handle = this.focus_handle(cx);
 1411            window.focus(&focus_handle, cx);
 1412        })
 1413        .detach();
 1414
 1415        let weak_handle = cx.entity().downgrade();
 1416        let pane_history_timestamp = Arc::new(AtomicUsize::new(0));
 1417
 1418        let center_pane = cx.new(|cx| {
 1419            let mut center_pane = Pane::new(
 1420                weak_handle.clone(),
 1421                project.clone(),
 1422                pane_history_timestamp.clone(),
 1423                None,
 1424                NewFile.boxed_clone(),
 1425                true,
 1426                window,
 1427                cx,
 1428            );
 1429            center_pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 1430            center_pane
 1431        });
 1432        cx.subscribe_in(&center_pane, window, Self::handle_pane_event)
 1433            .detach();
 1434
 1435        window.focus(&center_pane.focus_handle(cx), cx);
 1436
 1437        cx.emit(Event::PaneAdded(center_pane.clone()));
 1438
 1439        let window_handle = window.window_handle().downcast::<Workspace>().unwrap();
 1440        app_state.workspace_store.update(cx, |store, _| {
 1441            store.workspaces.insert(window_handle);
 1442        });
 1443
 1444        let mut current_user = app_state.user_store.read(cx).watch_current_user();
 1445        let mut connection_status = app_state.client.status();
 1446        let _observe_current_user = cx.spawn_in(window, async move |this, cx| {
 1447            current_user.next().await;
 1448            connection_status.next().await;
 1449            let mut stream =
 1450                Stream::map(current_user, drop).merge(Stream::map(connection_status, drop));
 1451
 1452            while stream.recv().await.is_some() {
 1453                this.update(cx, |_, cx| cx.notify())?;
 1454            }
 1455            anyhow::Ok(())
 1456        });
 1457
 1458        // All leader updates are enqueued and then processed in a single task, so
 1459        // that each asynchronous operation can be run in order.
 1460        let (leader_updates_tx, mut leader_updates_rx) =
 1461            mpsc::unbounded::<(PeerId, proto::UpdateFollowers)>();
 1462        let _apply_leader_updates = cx.spawn_in(window, async move |this, cx| {
 1463            while let Some((leader_id, update)) = leader_updates_rx.next().await {
 1464                Self::process_leader_update(&this, leader_id, update, cx)
 1465                    .await
 1466                    .log_err();
 1467            }
 1468
 1469            Ok(())
 1470        });
 1471
 1472        cx.emit(Event::WorkspaceCreated(weak_handle.clone()));
 1473        let modal_layer = cx.new(|_| ModalLayer::new());
 1474        let toast_layer = cx.new(|_| ToastLayer::new());
 1475        cx.subscribe(
 1476            &modal_layer,
 1477            |_, _, _: &modal_layer::ModalOpenedEvent, cx| {
 1478                cx.emit(Event::ModalOpened);
 1479            },
 1480        )
 1481        .detach();
 1482
 1483        let left_dock = Dock::new(DockPosition::Left, modal_layer.clone(), window, cx);
 1484        let bottom_dock = Dock::new(DockPosition::Bottom, modal_layer.clone(), window, cx);
 1485        let right_dock = Dock::new(DockPosition::Right, modal_layer.clone(), window, cx);
 1486        let left_dock_buttons = cx.new(|cx| PanelButtons::new(left_dock.clone(), cx));
 1487        let bottom_dock_buttons = cx.new(|cx| PanelButtons::new(bottom_dock.clone(), cx));
 1488        let right_dock_buttons = cx.new(|cx| PanelButtons::new(right_dock.clone(), cx));
 1489        let status_bar = cx.new(|cx| {
 1490            let mut status_bar = StatusBar::new(&center_pane.clone(), window, cx);
 1491            status_bar.add_left_item(left_dock_buttons, window, cx);
 1492            status_bar.add_right_item(right_dock_buttons, window, cx);
 1493            status_bar.add_right_item(bottom_dock_buttons, window, cx);
 1494            status_bar
 1495        });
 1496
 1497        let session_id = app_state.session.read(cx).id().to_owned();
 1498
 1499        let mut active_call = None;
 1500        if let Some(call) = ActiveCall::try_global(cx) {
 1501            let subscriptions = vec![cx.subscribe_in(&call, window, Self::on_active_call_event)];
 1502            active_call = Some((call, subscriptions));
 1503        }
 1504
 1505        let (serializable_items_tx, serializable_items_rx) =
 1506            mpsc::unbounded::<Box<dyn SerializableItemHandle>>();
 1507        let _items_serializer = cx.spawn_in(window, async move |this, cx| {
 1508            Self::serialize_items(&this, serializable_items_rx, cx).await
 1509        });
 1510
 1511        let subscriptions = vec![
 1512            cx.observe_window_activation(window, Self::on_window_activation_changed),
 1513            cx.observe_window_bounds(window, move |this, window, cx| {
 1514                if this.bounds_save_task_queued.is_some() {
 1515                    return;
 1516                }
 1517                this.bounds_save_task_queued = Some(cx.spawn_in(window, async move |this, cx| {
 1518                    cx.background_executor()
 1519                        .timer(Duration::from_millis(100))
 1520                        .await;
 1521                    this.update_in(cx, |this, window, cx| {
 1522                        if let Some(display) = window.display(cx)
 1523                            && let Ok(display_uuid) = display.uuid()
 1524                        {
 1525                            let window_bounds = window.inner_window_bounds();
 1526                            let has_paths = !this.root_paths(cx).is_empty();
 1527                            if !has_paths {
 1528                                cx.background_executor()
 1529                                    .spawn(persistence::write_default_window_bounds(
 1530                                        window_bounds,
 1531                                        display_uuid,
 1532                                    ))
 1533                                    .detach_and_log_err(cx);
 1534                            }
 1535                            if let Some(database_id) = workspace_id {
 1536                                cx.background_executor()
 1537                                    .spawn(DB.set_window_open_status(
 1538                                        database_id,
 1539                                        SerializedWindowBounds(window_bounds),
 1540                                        display_uuid,
 1541                                    ))
 1542                                    .detach_and_log_err(cx);
 1543                            } else {
 1544                                cx.background_executor()
 1545                                    .spawn(persistence::write_default_window_bounds(
 1546                                        window_bounds,
 1547                                        display_uuid,
 1548                                    ))
 1549                                    .detach_and_log_err(cx);
 1550                            }
 1551                        }
 1552                        this.bounds_save_task_queued.take();
 1553                    })
 1554                    .ok();
 1555                }));
 1556                cx.notify();
 1557            }),
 1558            cx.observe_window_appearance(window, |_, window, cx| {
 1559                let window_appearance = window.appearance();
 1560
 1561                *SystemAppearance::global_mut(cx) = SystemAppearance(window_appearance.into());
 1562
 1563                GlobalTheme::reload_theme(cx);
 1564                GlobalTheme::reload_icon_theme(cx);
 1565            }),
 1566            cx.on_release(move |this, cx| {
 1567                this.app_state.workspace_store.update(cx, move |store, _| {
 1568                    store.workspaces.remove(&window_handle);
 1569                })
 1570            }),
 1571        ];
 1572
 1573        cx.defer_in(window, move |this, window, cx| {
 1574            this.update_window_title(window, cx);
 1575            this.show_initial_notifications(cx);
 1576        });
 1577
 1578        let mut center = PaneGroup::new(center_pane.clone());
 1579        center.set_is_center(true);
 1580        center.mark_positions(cx);
 1581
 1582        Workspace {
 1583            weak_self: weak_handle.clone(),
 1584            zoomed: None,
 1585            zoomed_position: None,
 1586            previous_dock_drag_coordinates: None,
 1587            center,
 1588            panes: vec![center_pane.clone()],
 1589            panes_by_item: Default::default(),
 1590            active_pane: center_pane.clone(),
 1591            last_active_center_pane: Some(center_pane.downgrade()),
 1592            last_active_view_id: None,
 1593            status_bar,
 1594            modal_layer,
 1595            toast_layer,
 1596            titlebar_item: None,
 1597            active_worktree_override: None,
 1598            notifications: Notifications::default(),
 1599            suppressed_notifications: HashSet::default(),
 1600            left_dock,
 1601            bottom_dock,
 1602            right_dock,
 1603            project: project.clone(),
 1604            follower_states: Default::default(),
 1605            last_leaders_by_pane: Default::default(),
 1606            dispatching_keystrokes: Default::default(),
 1607            window_edited: false,
 1608            last_window_title: None,
 1609            dirty_items: Default::default(),
 1610            active_call,
 1611            database_id: workspace_id,
 1612            app_state,
 1613            _observe_current_user,
 1614            _apply_leader_updates,
 1615            _schedule_serialize_workspace: None,
 1616            _schedule_serialize_ssh_paths: None,
 1617            leader_updates_tx,
 1618            _subscriptions: subscriptions,
 1619            pane_history_timestamp,
 1620            workspace_actions: Default::default(),
 1621            // This data will be incorrect, but it will be overwritten by the time it needs to be used.
 1622            bounds: Default::default(),
 1623            centered_layout: false,
 1624            bounds_save_task_queued: None,
 1625            on_prompt_for_new_path: None,
 1626            on_prompt_for_open_path: None,
 1627            terminal_provider: None,
 1628            debugger_provider: None,
 1629            serializable_items_tx,
 1630            _items_serializer,
 1631            session_id: Some(session_id),
 1632
 1633            scheduled_tasks: Vec::new(),
 1634            last_open_dock_positions: Vec::new(),
 1635            removing: false,
 1636            utility_panes: UtilityPaneState::default(),
 1637        }
 1638    }
 1639
 1640    pub fn new_local(
 1641        abs_paths: Vec<PathBuf>,
 1642        app_state: Arc<AppState>,
 1643        requesting_window: Option<WindowHandle<Workspace>>,
 1644        env: Option<HashMap<String, String>>,
 1645        init: Option<Box<dyn FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send>>,
 1646        cx: &mut App,
 1647    ) -> Task<
 1648        anyhow::Result<(
 1649            WindowHandle<Workspace>,
 1650            Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 1651        )>,
 1652    > {
 1653        let project_handle = Project::local(
 1654            app_state.client.clone(),
 1655            app_state.node_runtime.clone(),
 1656            app_state.user_store.clone(),
 1657            app_state.languages.clone(),
 1658            app_state.fs.clone(),
 1659            env,
 1660            true,
 1661            cx,
 1662        );
 1663
 1664        cx.spawn(async move |cx| {
 1665            let mut paths_to_open = Vec::with_capacity(abs_paths.len());
 1666            for path in abs_paths.into_iter() {
 1667                if let Some(canonical) = app_state.fs.canonicalize(&path).await.ok() {
 1668                    paths_to_open.push(canonical)
 1669                } else {
 1670                    paths_to_open.push(path)
 1671                }
 1672            }
 1673
 1674            let serialized_workspace =
 1675                persistence::DB.workspace_for_roots(paths_to_open.as_slice());
 1676
 1677            if let Some(paths) = serialized_workspace.as_ref().map(|ws| &ws.paths) {
 1678                paths_to_open = paths.ordered_paths().cloned().collect();
 1679                if !paths.is_lexicographically_ordered() {
 1680                    project_handle.update(cx, |project, cx| {
 1681                        project.set_worktrees_reordered(true, cx);
 1682                    });
 1683                }
 1684            }
 1685
 1686            // Get project paths for all of the abs_paths
 1687            let mut project_paths: Vec<(PathBuf, Option<ProjectPath>)> =
 1688                Vec::with_capacity(paths_to_open.len());
 1689
 1690            for path in paths_to_open.into_iter() {
 1691                if let Some((_, project_entry)) = cx
 1692                    .update(|cx| {
 1693                        Workspace::project_path_for_path(project_handle.clone(), &path, true, cx)
 1694                    })
 1695                    .await
 1696                    .log_err()
 1697                {
 1698                    project_paths.push((path, Some(project_entry)));
 1699                } else {
 1700                    project_paths.push((path, None));
 1701                }
 1702            }
 1703
 1704            let workspace_id = if let Some(serialized_workspace) = serialized_workspace.as_ref() {
 1705                serialized_workspace.id
 1706            } else {
 1707                DB.next_id().await.unwrap_or_else(|_| Default::default())
 1708            };
 1709
 1710            let toolchains = DB.toolchains(workspace_id).await?;
 1711
 1712            for (toolchain, worktree_path, path) in toolchains {
 1713                let toolchain_path = PathBuf::from(toolchain.path.clone().to_string());
 1714                let Some(worktree_id) = project_handle.read_with(cx, |this, cx| {
 1715                    this.find_worktree(&worktree_path, cx)
 1716                        .and_then(|(worktree, rel_path)| {
 1717                            if rel_path.is_empty() {
 1718                                Some(worktree.read(cx).id())
 1719                            } else {
 1720                                None
 1721                            }
 1722                        })
 1723                }) else {
 1724                    // We did not find a worktree with a given path, but that's whatever.
 1725                    continue;
 1726                };
 1727                if !app_state.fs.is_file(toolchain_path.as_path()).await {
 1728                    continue;
 1729                }
 1730
 1731                project_handle
 1732                    .update(cx, |this, cx| {
 1733                        this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 1734                    })
 1735                    .await;
 1736            }
 1737            if let Some(workspace) = serialized_workspace.as_ref() {
 1738                project_handle.update(cx, |this, cx| {
 1739                    for (scope, toolchains) in &workspace.user_toolchains {
 1740                        for toolchain in toolchains {
 1741                            this.add_toolchain(toolchain.clone(), scope.clone(), cx);
 1742                        }
 1743                    }
 1744                });
 1745            }
 1746
 1747            let window = if let Some(window) = requesting_window {
 1748                let centered_layout = serialized_workspace
 1749                    .as_ref()
 1750                    .map(|w| w.centered_layout)
 1751                    .unwrap_or(false);
 1752
 1753                cx.update_window(window.into(), |_, window, cx| {
 1754                    window.replace_root(cx, |window, cx| {
 1755                        let mut workspace = Workspace::new(
 1756                            Some(workspace_id),
 1757                            project_handle.clone(),
 1758                            app_state.clone(),
 1759                            window,
 1760                            cx,
 1761                        );
 1762
 1763                        workspace.centered_layout = centered_layout;
 1764
 1765                        // Call init callback to add items before window renders
 1766                        if let Some(init) = init {
 1767                            init(&mut workspace, window, cx);
 1768                        }
 1769
 1770                        workspace
 1771                    });
 1772                })?;
 1773                window
 1774            } else {
 1775                let window_bounds_override = window_bounds_env_override();
 1776
 1777                let (window_bounds, display) = if let Some(bounds) = window_bounds_override {
 1778                    (Some(WindowBounds::Windowed(bounds)), None)
 1779                } else if let Some(workspace) = serialized_workspace.as_ref()
 1780                    && let Some(display) = workspace.display
 1781                    && let Some(bounds) = workspace.window_bounds.as_ref()
 1782                {
 1783                    // Reopening an existing workspace - restore its saved bounds
 1784                    (Some(bounds.0), Some(display))
 1785                } else if let Some((display, bounds)) = persistence::read_default_window_bounds() {
 1786                    // New or empty workspace - use the last known window bounds
 1787                    (Some(bounds), Some(display))
 1788                } else {
 1789                    // New window - let GPUI's default_bounds() handle cascading
 1790                    (None, None)
 1791                };
 1792
 1793                // Use the serialized workspace to construct the new window
 1794                let mut options = cx.update(|cx| (app_state.build_window_options)(display, cx));
 1795                options.window_bounds = window_bounds;
 1796                let centered_layout = serialized_workspace
 1797                    .as_ref()
 1798                    .map(|w| w.centered_layout)
 1799                    .unwrap_or(false);
 1800                cx.open_window(options, {
 1801                    let app_state = app_state.clone();
 1802                    let project_handle = project_handle.clone();
 1803                    move |window, cx| {
 1804                        cx.new(|cx| {
 1805                            let mut workspace = Workspace::new(
 1806                                Some(workspace_id),
 1807                                project_handle,
 1808                                app_state,
 1809                                window,
 1810                                cx,
 1811                            );
 1812                            workspace.centered_layout = centered_layout;
 1813
 1814                            // Call init callback to add items before window renders
 1815                            if let Some(init) = init {
 1816                                init(&mut workspace, window, cx);
 1817                            }
 1818
 1819                            workspace
 1820                        })
 1821                    }
 1822                })?
 1823            };
 1824
 1825            notify_if_database_failed(window, cx);
 1826            let opened_items = window
 1827                .update(cx, |_workspace, window, cx| {
 1828                    open_items(serialized_workspace, project_paths, window, cx)
 1829                })?
 1830                .await
 1831                .unwrap_or_default();
 1832
 1833            window
 1834                .update(cx, |workspace, window, cx| {
 1835                    window.activate_window();
 1836                    workspace.update_history(cx);
 1837                })
 1838                .log_err();
 1839            Ok((window, opened_items))
 1840        })
 1841    }
 1842
 1843    pub fn weak_handle(&self) -> WeakEntity<Self> {
 1844        self.weak_self.clone()
 1845    }
 1846
 1847    pub fn left_dock(&self) -> &Entity<Dock> {
 1848        &self.left_dock
 1849    }
 1850
 1851    pub fn bottom_dock(&self) -> &Entity<Dock> {
 1852        &self.bottom_dock
 1853    }
 1854
 1855    pub fn set_bottom_dock_layout(
 1856        &mut self,
 1857        layout: BottomDockLayout,
 1858        window: &mut Window,
 1859        cx: &mut Context<Self>,
 1860    ) {
 1861        let fs = self.project().read(cx).fs();
 1862        settings::update_settings_file(fs.clone(), cx, move |content, _cx| {
 1863            content.workspace.bottom_dock_layout = Some(layout);
 1864        });
 1865
 1866        cx.notify();
 1867        self.serialize_workspace(window, cx);
 1868    }
 1869
 1870    pub fn right_dock(&self) -> &Entity<Dock> {
 1871        &self.right_dock
 1872    }
 1873
 1874    pub fn all_docks(&self) -> [&Entity<Dock>; 3] {
 1875        [&self.left_dock, &self.bottom_dock, &self.right_dock]
 1876    }
 1877
 1878    pub fn dock_at_position(&self, position: DockPosition) -> &Entity<Dock> {
 1879        match position {
 1880            DockPosition::Left => &self.left_dock,
 1881            DockPosition::Bottom => &self.bottom_dock,
 1882            DockPosition::Right => &self.right_dock,
 1883        }
 1884    }
 1885
 1886    pub fn is_edited(&self) -> bool {
 1887        self.window_edited
 1888    }
 1889
 1890    pub fn add_panel<T: Panel>(
 1891        &mut self,
 1892        panel: Entity<T>,
 1893        window: &mut Window,
 1894        cx: &mut Context<Self>,
 1895    ) {
 1896        let focus_handle = panel.panel_focus_handle(cx);
 1897        cx.on_focus_in(&focus_handle, window, Self::handle_panel_focused)
 1898            .detach();
 1899
 1900        let dock_position = panel.position(window, cx);
 1901        let dock = self.dock_at_position(dock_position);
 1902
 1903        dock.update(cx, |dock, cx| {
 1904            dock.add_panel(panel, self.weak_self.clone(), window, cx)
 1905        });
 1906    }
 1907
 1908    pub fn remove_panel<T: Panel>(
 1909        &mut self,
 1910        panel: &Entity<T>,
 1911        window: &mut Window,
 1912        cx: &mut Context<Self>,
 1913    ) {
 1914        let mut found_in_dock = None;
 1915        for dock in [&self.left_dock, &self.bottom_dock, &self.right_dock] {
 1916            let found = dock.update(cx, |dock, cx| dock.remove_panel(panel, window, cx));
 1917
 1918            if found {
 1919                found_in_dock = Some(dock.clone());
 1920            }
 1921        }
 1922        if let Some(found_in_dock) = found_in_dock {
 1923            let position = found_in_dock.read(cx).position();
 1924            let slot = utility_slot_for_dock_position(position);
 1925            self.clear_utility_pane_if_provider(slot, Entity::entity_id(panel), cx);
 1926        }
 1927    }
 1928
 1929    pub fn status_bar(&self) -> &Entity<StatusBar> {
 1930        &self.status_bar
 1931    }
 1932
 1933    pub fn status_bar_visible(&self, cx: &App) -> bool {
 1934        StatusBarSettings::get_global(cx).show
 1935    }
 1936
 1937    pub fn app_state(&self) -> &Arc<AppState> {
 1938        &self.app_state
 1939    }
 1940
 1941    pub fn user_store(&self) -> &Entity<UserStore> {
 1942        &self.app_state.user_store
 1943    }
 1944
 1945    pub fn project(&self) -> &Entity<Project> {
 1946        &self.project
 1947    }
 1948
 1949    pub fn path_style(&self, cx: &App) -> PathStyle {
 1950        self.project.read(cx).path_style(cx)
 1951    }
 1952
 1953    pub fn recently_activated_items(&self, cx: &App) -> HashMap<EntityId, usize> {
 1954        let mut history: HashMap<EntityId, usize> = HashMap::default();
 1955
 1956        for pane_handle in &self.panes {
 1957            let pane = pane_handle.read(cx);
 1958
 1959            for entry in pane.activation_history() {
 1960                history.insert(
 1961                    entry.entity_id,
 1962                    history
 1963                        .get(&entry.entity_id)
 1964                        .cloned()
 1965                        .unwrap_or(0)
 1966                        .max(entry.timestamp),
 1967                );
 1968            }
 1969        }
 1970
 1971        history
 1972    }
 1973
 1974    pub fn recent_active_item_by_type<T: 'static>(&self, cx: &App) -> Option<Entity<T>> {
 1975        let mut recent_item: Option<Entity<T>> = None;
 1976        let mut recent_timestamp = 0;
 1977        for pane_handle in &self.panes {
 1978            let pane = pane_handle.read(cx);
 1979            let item_map: HashMap<EntityId, &Box<dyn ItemHandle>> =
 1980                pane.items().map(|item| (item.item_id(), item)).collect();
 1981            for entry in pane.activation_history() {
 1982                if entry.timestamp > recent_timestamp
 1983                    && let Some(&item) = item_map.get(&entry.entity_id)
 1984                    && let Some(typed_item) = item.act_as::<T>(cx)
 1985                {
 1986                    recent_timestamp = entry.timestamp;
 1987                    recent_item = Some(typed_item);
 1988                }
 1989            }
 1990        }
 1991        recent_item
 1992    }
 1993
 1994    pub fn recent_navigation_history_iter(
 1995        &self,
 1996        cx: &App,
 1997    ) -> impl Iterator<Item = (ProjectPath, Option<PathBuf>)> + use<> {
 1998        let mut abs_paths_opened: HashMap<PathBuf, HashSet<ProjectPath>> = HashMap::default();
 1999        let mut history: HashMap<ProjectPath, (Option<PathBuf>, usize)> = HashMap::default();
 2000
 2001        for pane in &self.panes {
 2002            let pane = pane.read(cx);
 2003
 2004            pane.nav_history()
 2005                .for_each_entry(cx, |entry, (project_path, fs_path)| {
 2006                    if let Some(fs_path) = &fs_path {
 2007                        abs_paths_opened
 2008                            .entry(fs_path.clone())
 2009                            .or_default()
 2010                            .insert(project_path.clone());
 2011                    }
 2012                    let timestamp = entry.timestamp;
 2013                    match history.entry(project_path) {
 2014                        hash_map::Entry::Occupied(mut entry) => {
 2015                            let (_, old_timestamp) = entry.get();
 2016                            if &timestamp > old_timestamp {
 2017                                entry.insert((fs_path, timestamp));
 2018                            }
 2019                        }
 2020                        hash_map::Entry::Vacant(entry) => {
 2021                            entry.insert((fs_path, timestamp));
 2022                        }
 2023                    }
 2024                });
 2025
 2026            if let Some(item) = pane.active_item()
 2027                && let Some(project_path) = item.project_path(cx)
 2028            {
 2029                let fs_path = self.project.read(cx).absolute_path(&project_path, cx);
 2030
 2031                if let Some(fs_path) = &fs_path {
 2032                    abs_paths_opened
 2033                        .entry(fs_path.clone())
 2034                        .or_default()
 2035                        .insert(project_path.clone());
 2036                }
 2037
 2038                history.insert(project_path, (fs_path, std::usize::MAX));
 2039            }
 2040        }
 2041
 2042        history
 2043            .into_iter()
 2044            .sorted_by_key(|(_, (_, order))| *order)
 2045            .map(|(project_path, (fs_path, _))| (project_path, fs_path))
 2046            .rev()
 2047            .filter(move |(history_path, abs_path)| {
 2048                let latest_project_path_opened = abs_path
 2049                    .as_ref()
 2050                    .and_then(|abs_path| abs_paths_opened.get(abs_path))
 2051                    .and_then(|project_paths| {
 2052                        project_paths
 2053                            .iter()
 2054                            .max_by(|b1, b2| b1.worktree_id.cmp(&b2.worktree_id))
 2055                    });
 2056
 2057                latest_project_path_opened.is_none_or(|path| path == history_path)
 2058            })
 2059    }
 2060
 2061    pub fn recent_navigation_history(
 2062        &self,
 2063        limit: Option<usize>,
 2064        cx: &App,
 2065    ) -> Vec<(ProjectPath, Option<PathBuf>)> {
 2066        self.recent_navigation_history_iter(cx)
 2067            .take(limit.unwrap_or(usize::MAX))
 2068            .collect()
 2069    }
 2070
 2071    pub fn clear_navigation_history(&mut self, _window: &mut Window, cx: &mut Context<Workspace>) {
 2072        for pane in &self.panes {
 2073            pane.update(cx, |pane, cx| pane.nav_history_mut().clear(cx));
 2074        }
 2075    }
 2076
 2077    fn navigate_history(
 2078        &mut self,
 2079        pane: WeakEntity<Pane>,
 2080        mode: NavigationMode,
 2081        window: &mut Window,
 2082        cx: &mut Context<Workspace>,
 2083    ) -> Task<Result<()>> {
 2084        let to_load = if let Some(pane) = pane.upgrade() {
 2085            pane.update(cx, |pane, cx| {
 2086                window.focus(&pane.focus_handle(cx), cx);
 2087                loop {
 2088                    // Retrieve the weak item handle from the history.
 2089                    let entry = pane.nav_history_mut().pop(mode, cx)?;
 2090
 2091                    // If the item is still present in this pane, then activate it.
 2092                    if let Some(index) = entry
 2093                        .item
 2094                        .upgrade()
 2095                        .and_then(|v| pane.index_for_item(v.as_ref()))
 2096                    {
 2097                        let prev_active_item_index = pane.active_item_index();
 2098                        pane.nav_history_mut().set_mode(mode);
 2099                        pane.activate_item(index, true, true, window, cx);
 2100                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 2101
 2102                        let mut navigated = prev_active_item_index != pane.active_item_index();
 2103                        if let Some(data) = entry.data {
 2104                            navigated |= pane.active_item()?.navigate(data, window, cx);
 2105                        }
 2106
 2107                        if navigated {
 2108                            break None;
 2109                        }
 2110                    } else {
 2111                        // If the item is no longer present in this pane, then retrieve its
 2112                        // path info in order to reopen it.
 2113                        break pane
 2114                            .nav_history()
 2115                            .path_for_item(entry.item.id())
 2116                            .map(|(project_path, abs_path)| (project_path, abs_path, entry));
 2117                    }
 2118                }
 2119            })
 2120        } else {
 2121            None
 2122        };
 2123
 2124        if let Some((project_path, abs_path, entry)) = to_load {
 2125            // If the item was no longer present, then load it again from its previous path, first try the local path
 2126            let open_by_project_path = self.load_path(project_path.clone(), window, cx);
 2127
 2128            cx.spawn_in(window, async move  |workspace, cx| {
 2129                let open_by_project_path = open_by_project_path.await;
 2130                let mut navigated = false;
 2131                match open_by_project_path
 2132                    .with_context(|| format!("Navigating to {project_path:?}"))
 2133                {
 2134                    Ok((project_entry_id, build_item)) => {
 2135                        let prev_active_item_id = pane.update(cx, |pane, _| {
 2136                            pane.nav_history_mut().set_mode(mode);
 2137                            pane.active_item().map(|p| p.item_id())
 2138                        })?;
 2139
 2140                        pane.update_in(cx, |pane, window, cx| {
 2141                            let item = pane.open_item(
 2142                                project_entry_id,
 2143                                project_path,
 2144                                true,
 2145                                entry.is_preview,
 2146                                true,
 2147                                None,
 2148                                window, cx,
 2149                                build_item,
 2150                            );
 2151                            navigated |= Some(item.item_id()) != prev_active_item_id;
 2152                            pane.nav_history_mut().set_mode(NavigationMode::Normal);
 2153                            if let Some(data) = entry.data {
 2154                                navigated |= item.navigate(data, window, cx);
 2155                            }
 2156                        })?;
 2157                    }
 2158                    Err(open_by_project_path_e) => {
 2159                        // Fall back to opening by abs path, in case an external file was opened and closed,
 2160                        // and its worktree is now dropped
 2161                        if let Some(abs_path) = abs_path {
 2162                            let prev_active_item_id = pane.update(cx, |pane, _| {
 2163                                pane.nav_history_mut().set_mode(mode);
 2164                                pane.active_item().map(|p| p.item_id())
 2165                            })?;
 2166                            let open_by_abs_path = workspace.update_in(cx, |workspace, window, cx| {
 2167                                workspace.open_abs_path(abs_path.clone(), OpenOptions { visible: Some(OpenVisible::None), ..Default::default() }, window, cx)
 2168                            })?;
 2169                            match open_by_abs_path
 2170                                .await
 2171                                .with_context(|| format!("Navigating to {abs_path:?}"))
 2172                            {
 2173                                Ok(item) => {
 2174                                    pane.update_in(cx, |pane, window, cx| {
 2175                                        navigated |= Some(item.item_id()) != prev_active_item_id;
 2176                                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 2177                                        if let Some(data) = entry.data {
 2178                                            navigated |= item.navigate(data, window, cx);
 2179                                        }
 2180                                    })?;
 2181                                }
 2182                                Err(open_by_abs_path_e) => {
 2183                                    log::error!("Failed to navigate history: {open_by_project_path_e:#} and {open_by_abs_path_e:#}");
 2184                                }
 2185                            }
 2186                        }
 2187                    }
 2188                }
 2189
 2190                if !navigated {
 2191                    workspace
 2192                        .update_in(cx, |workspace, window, cx| {
 2193                            Self::navigate_history(workspace, pane, mode, window, cx)
 2194                        })?
 2195                        .await?;
 2196                }
 2197
 2198                Ok(())
 2199            })
 2200        } else {
 2201            Task::ready(Ok(()))
 2202        }
 2203    }
 2204
 2205    pub fn go_back(
 2206        &mut self,
 2207        pane: WeakEntity<Pane>,
 2208        window: &mut Window,
 2209        cx: &mut Context<Workspace>,
 2210    ) -> Task<Result<()>> {
 2211        self.navigate_history(pane, NavigationMode::GoingBack, window, cx)
 2212    }
 2213
 2214    pub fn go_forward(
 2215        &mut self,
 2216        pane: WeakEntity<Pane>,
 2217        window: &mut Window,
 2218        cx: &mut Context<Workspace>,
 2219    ) -> Task<Result<()>> {
 2220        self.navigate_history(pane, NavigationMode::GoingForward, window, cx)
 2221    }
 2222
 2223    pub fn reopen_closed_item(
 2224        &mut self,
 2225        window: &mut Window,
 2226        cx: &mut Context<Workspace>,
 2227    ) -> Task<Result<()>> {
 2228        self.navigate_history(
 2229            self.active_pane().downgrade(),
 2230            NavigationMode::ReopeningClosedItem,
 2231            window,
 2232            cx,
 2233        )
 2234    }
 2235
 2236    pub fn client(&self) -> &Arc<Client> {
 2237        &self.app_state.client
 2238    }
 2239
 2240    pub fn set_titlebar_item(&mut self, item: AnyView, _: &mut Window, cx: &mut Context<Self>) {
 2241        self.titlebar_item = Some(item);
 2242        cx.notify();
 2243    }
 2244
 2245    pub fn set_prompt_for_new_path(&mut self, prompt: PromptForNewPath) {
 2246        self.on_prompt_for_new_path = Some(prompt)
 2247    }
 2248
 2249    pub fn set_prompt_for_open_path(&mut self, prompt: PromptForOpenPath) {
 2250        self.on_prompt_for_open_path = Some(prompt)
 2251    }
 2252
 2253    pub fn set_terminal_provider(&mut self, provider: impl TerminalProvider + 'static) {
 2254        self.terminal_provider = Some(Box::new(provider));
 2255    }
 2256
 2257    pub fn set_debugger_provider(&mut self, provider: impl DebuggerProvider + 'static) {
 2258        self.debugger_provider = Some(Arc::new(provider));
 2259    }
 2260
 2261    pub fn debugger_provider(&self) -> Option<Arc<dyn DebuggerProvider>> {
 2262        self.debugger_provider.clone()
 2263    }
 2264
 2265    pub fn prompt_for_open_path(
 2266        &mut self,
 2267        path_prompt_options: PathPromptOptions,
 2268        lister: DirectoryLister,
 2269        window: &mut Window,
 2270        cx: &mut Context<Self>,
 2271    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2272        if !lister.is_local(cx) || !WorkspaceSettings::get_global(cx).use_system_path_prompts {
 2273            let prompt = self.on_prompt_for_open_path.take().unwrap();
 2274            let rx = prompt(self, lister, window, cx);
 2275            self.on_prompt_for_open_path = Some(prompt);
 2276            rx
 2277        } else {
 2278            let (tx, rx) = oneshot::channel();
 2279            let abs_path = cx.prompt_for_paths(path_prompt_options);
 2280
 2281            cx.spawn_in(window, async move |workspace, cx| {
 2282                let Ok(result) = abs_path.await else {
 2283                    return Ok(());
 2284                };
 2285
 2286                match result {
 2287                    Ok(result) => {
 2288                        tx.send(result).ok();
 2289                    }
 2290                    Err(err) => {
 2291                        let rx = workspace.update_in(cx, |workspace, window, cx| {
 2292                            workspace.show_portal_error(err.to_string(), cx);
 2293                            let prompt = workspace.on_prompt_for_open_path.take().unwrap();
 2294                            let rx = prompt(workspace, lister, window, cx);
 2295                            workspace.on_prompt_for_open_path = Some(prompt);
 2296                            rx
 2297                        })?;
 2298                        if let Ok(path) = rx.await {
 2299                            tx.send(path).ok();
 2300                        }
 2301                    }
 2302                };
 2303                anyhow::Ok(())
 2304            })
 2305            .detach();
 2306
 2307            rx
 2308        }
 2309    }
 2310
 2311    pub fn prompt_for_new_path(
 2312        &mut self,
 2313        lister: DirectoryLister,
 2314        suggested_name: Option<String>,
 2315        window: &mut Window,
 2316        cx: &mut Context<Self>,
 2317    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2318        if self.project.read(cx).is_via_collab()
 2319            || self.project.read(cx).is_via_remote_server()
 2320            || !WorkspaceSettings::get_global(cx).use_system_path_prompts
 2321        {
 2322            let prompt = self.on_prompt_for_new_path.take().unwrap();
 2323            let rx = prompt(self, lister, window, cx);
 2324            self.on_prompt_for_new_path = Some(prompt);
 2325            return rx;
 2326        }
 2327
 2328        let (tx, rx) = oneshot::channel();
 2329        cx.spawn_in(window, async move |workspace, cx| {
 2330            let abs_path = workspace.update(cx, |workspace, cx| {
 2331                let relative_to = workspace
 2332                    .most_recent_active_path(cx)
 2333                    .and_then(|p| p.parent().map(|p| p.to_path_buf()))
 2334                    .or_else(|| {
 2335                        let project = workspace.project.read(cx);
 2336                        project.visible_worktrees(cx).find_map(|worktree| {
 2337                            Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
 2338                        })
 2339                    })
 2340                    .or_else(std::env::home_dir)
 2341                    .unwrap_or_else(|| PathBuf::from(""));
 2342                cx.prompt_for_new_path(&relative_to, suggested_name.as_deref())
 2343            })?;
 2344            let abs_path = match abs_path.await? {
 2345                Ok(path) => path,
 2346                Err(err) => {
 2347                    let rx = workspace.update_in(cx, |workspace, window, cx| {
 2348                        workspace.show_portal_error(err.to_string(), cx);
 2349
 2350                        let prompt = workspace.on_prompt_for_new_path.take().unwrap();
 2351                        let rx = prompt(workspace, lister, window, cx);
 2352                        workspace.on_prompt_for_new_path = Some(prompt);
 2353                        rx
 2354                    })?;
 2355                    if let Ok(path) = rx.await {
 2356                        tx.send(path).ok();
 2357                    }
 2358                    return anyhow::Ok(());
 2359                }
 2360            };
 2361
 2362            tx.send(abs_path.map(|path| vec![path])).ok();
 2363            anyhow::Ok(())
 2364        })
 2365        .detach();
 2366
 2367        rx
 2368    }
 2369
 2370    pub fn titlebar_item(&self) -> Option<AnyView> {
 2371        self.titlebar_item.clone()
 2372    }
 2373
 2374    /// Returns the worktree override set by the user (e.g., via the project dropdown).
 2375    /// When set, git-related operations should use this worktree instead of deriving
 2376    /// the active worktree from the focused file.
 2377    pub fn active_worktree_override(&self) -> Option<WorktreeId> {
 2378        self.active_worktree_override
 2379    }
 2380
 2381    pub fn set_active_worktree_override(
 2382        &mut self,
 2383        worktree_id: Option<WorktreeId>,
 2384        cx: &mut Context<Self>,
 2385    ) {
 2386        self.active_worktree_override = worktree_id;
 2387        cx.notify();
 2388    }
 2389
 2390    pub fn clear_active_worktree_override(&mut self, cx: &mut Context<Self>) {
 2391        self.active_worktree_override = None;
 2392        cx.notify();
 2393    }
 2394
 2395    /// Call the given callback with a workspace whose project is local or remote via WSL (allowing host access).
 2396    ///
 2397    /// If the given workspace has a local project, then it will be passed
 2398    /// to the callback. Otherwise, a new empty window will be created.
 2399    pub fn with_local_workspace<T, F>(
 2400        &mut self,
 2401        window: &mut Window,
 2402        cx: &mut Context<Self>,
 2403        callback: F,
 2404    ) -> Task<Result<T>>
 2405    where
 2406        T: 'static,
 2407        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
 2408    {
 2409        if self.project.read(cx).is_local() {
 2410            Task::ready(Ok(callback(self, window, cx)))
 2411        } else {
 2412            let env = self.project.read(cx).cli_environment(cx);
 2413            let task = Self::new_local(Vec::new(), self.app_state.clone(), None, env, None, cx);
 2414            cx.spawn_in(window, async move |_vh, cx| {
 2415                let (workspace, _) = task.await?;
 2416                workspace.update(cx, callback)
 2417            })
 2418        }
 2419    }
 2420
 2421    /// Call the given callback with a workspace whose project is local or remote via WSL (allowing host access).
 2422    ///
 2423    /// If the given workspace has a local project, then it will be passed
 2424    /// to the callback. Otherwise, a new empty window will be created.
 2425    pub fn with_local_or_wsl_workspace<T, F>(
 2426        &mut self,
 2427        window: &mut Window,
 2428        cx: &mut Context<Self>,
 2429        callback: F,
 2430    ) -> Task<Result<T>>
 2431    where
 2432        T: 'static,
 2433        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
 2434    {
 2435        let project = self.project.read(cx);
 2436        if project.is_local() || project.is_via_wsl_with_host_interop(cx) {
 2437            Task::ready(Ok(callback(self, window, cx)))
 2438        } else {
 2439            let env = self.project.read(cx).cli_environment(cx);
 2440            let task = Self::new_local(Vec::new(), self.app_state.clone(), None, env, None, cx);
 2441            cx.spawn_in(window, async move |_vh, cx| {
 2442                let (workspace, _) = task.await?;
 2443                workspace.update(cx, callback)
 2444            })
 2445        }
 2446    }
 2447
 2448    pub fn worktrees<'a>(&self, cx: &'a App) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2449        self.project.read(cx).worktrees(cx)
 2450    }
 2451
 2452    pub fn visible_worktrees<'a>(
 2453        &self,
 2454        cx: &'a App,
 2455    ) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2456        self.project.read(cx).visible_worktrees(cx)
 2457    }
 2458
 2459    #[cfg(any(test, feature = "test-support"))]
 2460    pub fn worktree_scans_complete(&self, cx: &App) -> impl Future<Output = ()> + 'static + use<> {
 2461        let futures = self
 2462            .worktrees(cx)
 2463            .filter_map(|worktree| worktree.read(cx).as_local())
 2464            .map(|worktree| worktree.scan_complete())
 2465            .collect::<Vec<_>>();
 2466        async move {
 2467            for future in futures {
 2468                future.await;
 2469            }
 2470        }
 2471    }
 2472
 2473    pub fn close_global(cx: &mut App) {
 2474        cx.defer(|cx| {
 2475            cx.windows().iter().find(|window| {
 2476                window
 2477                    .update(cx, |_, window, _| {
 2478                        if window.is_window_active() {
 2479                            //This can only get called when the window's project connection has been lost
 2480                            //so we don't need to prompt the user for anything and instead just close the window
 2481                            window.remove_window();
 2482                            true
 2483                        } else {
 2484                            false
 2485                        }
 2486                    })
 2487                    .unwrap_or(false)
 2488            });
 2489        });
 2490    }
 2491
 2492    pub fn close_window(&mut self, _: &CloseWindow, window: &mut Window, cx: &mut Context<Self>) {
 2493        let prepare = self.prepare_to_close(CloseIntent::CloseWindow, window, cx);
 2494        cx.spawn_in(window, async move |_, cx| {
 2495            if prepare.await? {
 2496                cx.update(|window, _cx| window.remove_window())?;
 2497            }
 2498            anyhow::Ok(())
 2499        })
 2500        .detach_and_log_err(cx)
 2501    }
 2502
 2503    pub fn move_focused_panel_to_next_position(
 2504        &mut self,
 2505        _: &MoveFocusedPanelToNextPosition,
 2506        window: &mut Window,
 2507        cx: &mut Context<Self>,
 2508    ) {
 2509        let docks = self.all_docks();
 2510        let active_dock = docks
 2511            .into_iter()
 2512            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 2513
 2514        if let Some(dock) = active_dock {
 2515            dock.update(cx, |dock, cx| {
 2516                let active_panel = dock
 2517                    .active_panel()
 2518                    .filter(|panel| panel.panel_focus_handle(cx).contains_focused(window, cx));
 2519
 2520                if let Some(panel) = active_panel {
 2521                    panel.move_to_next_position(window, cx);
 2522                }
 2523            })
 2524        }
 2525    }
 2526
 2527    pub fn prepare_to_close(
 2528        &mut self,
 2529        close_intent: CloseIntent,
 2530        window: &mut Window,
 2531        cx: &mut Context<Self>,
 2532    ) -> Task<Result<bool>> {
 2533        let active_call = self.active_call().cloned();
 2534
 2535        cx.spawn_in(window, async move |this, cx| {
 2536            this.update(cx, |this, _| {
 2537                if close_intent == CloseIntent::CloseWindow {
 2538                    this.removing = true;
 2539                }
 2540            })?;
 2541
 2542            let workspace_count = cx.update(|_window, cx| {
 2543                cx.windows()
 2544                    .iter()
 2545                    .filter(|window| window.downcast::<Workspace>().is_some())
 2546                    .count()
 2547            })?;
 2548
 2549            #[cfg(target_os = "macos")]
 2550            let save_last_workspace = false;
 2551
 2552            // On Linux and Windows, closing the last window should restore the last workspace.
 2553            #[cfg(not(target_os = "macos"))]
 2554            let save_last_workspace = {
 2555                let remaining_workspaces = cx.update(|_window, cx| {
 2556                    cx.windows()
 2557                        .iter()
 2558                        .filter_map(|window| window.downcast::<Workspace>())
 2559                        .filter_map(|workspace| {
 2560                            workspace
 2561                                .update(cx, |workspace, _, _| workspace.removing)
 2562                                .ok()
 2563                        })
 2564                        .filter(|removing| !removing)
 2565                        .count()
 2566                })?;
 2567
 2568                close_intent != CloseIntent::ReplaceWindow && remaining_workspaces == 0
 2569            };
 2570
 2571            if let Some(active_call) = active_call
 2572                && workspace_count == 1
 2573                && active_call.read_with(cx, |call, _| call.room().is_some())
 2574            {
 2575                if close_intent == CloseIntent::CloseWindow {
 2576                    let answer = cx.update(|window, cx| {
 2577                        window.prompt(
 2578                            PromptLevel::Warning,
 2579                            "Do you want to leave the current call?",
 2580                            None,
 2581                            &["Close window and hang up", "Cancel"],
 2582                            cx,
 2583                        )
 2584                    })?;
 2585
 2586                    if answer.await.log_err() == Some(1) {
 2587                        return anyhow::Ok(false);
 2588                    } else {
 2589                        active_call
 2590                            .update(cx, |call, cx| call.hang_up(cx))
 2591                            .await
 2592                            .log_err();
 2593                    }
 2594                }
 2595                if close_intent == CloseIntent::ReplaceWindow {
 2596                    _ = active_call.update(cx, |this, cx| {
 2597                        let workspace = cx
 2598                            .windows()
 2599                            .iter()
 2600                            .filter_map(|window| window.downcast::<Workspace>())
 2601                            .next()
 2602                            .unwrap();
 2603                        let project = workspace.read(cx)?.project.clone();
 2604                        if project.read(cx).is_shared() {
 2605                            this.unshare_project(project, cx)?;
 2606                        }
 2607                        Ok::<_, anyhow::Error>(())
 2608                    })?;
 2609                }
 2610            }
 2611
 2612            let save_result = this
 2613                .update_in(cx, |this, window, cx| {
 2614                    this.save_all_internal(SaveIntent::Close, window, cx)
 2615                })?
 2616                .await;
 2617
 2618            // If we're not quitting, but closing, we remove the workspace from
 2619            // the current session.
 2620            if close_intent != CloseIntent::Quit
 2621                && !save_last_workspace
 2622                && save_result.as_ref().is_ok_and(|&res| res)
 2623            {
 2624                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))?
 2625                    .await;
 2626            }
 2627
 2628            save_result
 2629        })
 2630    }
 2631
 2632    fn save_all(&mut self, action: &SaveAll, window: &mut Window, cx: &mut Context<Self>) {
 2633        self.save_all_internal(
 2634            action.save_intent.unwrap_or(SaveIntent::SaveAll),
 2635            window,
 2636            cx,
 2637        )
 2638        .detach_and_log_err(cx);
 2639    }
 2640
 2641    fn send_keystrokes(
 2642        &mut self,
 2643        action: &SendKeystrokes,
 2644        window: &mut Window,
 2645        cx: &mut Context<Self>,
 2646    ) {
 2647        let keystrokes: Vec<Keystroke> = action
 2648            .0
 2649            .split(' ')
 2650            .flat_map(|k| Keystroke::parse(k).log_err())
 2651            .map(|k| {
 2652                cx.keyboard_mapper()
 2653                    .map_key_equivalent(k, true)
 2654                    .inner()
 2655                    .clone()
 2656            })
 2657            .collect();
 2658        let _ = self.send_keystrokes_impl(keystrokes, window, cx);
 2659    }
 2660
 2661    pub fn send_keystrokes_impl(
 2662        &mut self,
 2663        keystrokes: Vec<Keystroke>,
 2664        window: &mut Window,
 2665        cx: &mut Context<Self>,
 2666    ) -> Shared<Task<()>> {
 2667        let mut state = self.dispatching_keystrokes.borrow_mut();
 2668        if !state.dispatched.insert(keystrokes.clone()) {
 2669            cx.propagate();
 2670            return state.task.clone().unwrap();
 2671        }
 2672
 2673        state.queue.extend(keystrokes);
 2674
 2675        let keystrokes = self.dispatching_keystrokes.clone();
 2676        if state.task.is_none() {
 2677            state.task = Some(
 2678                window
 2679                    .spawn(cx, async move |cx| {
 2680                        // limit to 100 keystrokes to avoid infinite recursion.
 2681                        for _ in 0..100 {
 2682                            let mut state = keystrokes.borrow_mut();
 2683                            let Some(keystroke) = state.queue.pop_front() else {
 2684                                state.dispatched.clear();
 2685                                state.task.take();
 2686                                return;
 2687                            };
 2688                            drop(state);
 2689                            cx.update(|window, cx| {
 2690                                let focused = window.focused(cx);
 2691                                window.dispatch_keystroke(keystroke.clone(), cx);
 2692                                if window.focused(cx) != focused {
 2693                                    // dispatch_keystroke may cause the focus to change.
 2694                                    // draw's side effect is to schedule the FocusChanged events in the current flush effect cycle
 2695                                    // And we need that to happen before the next keystroke to keep vim mode happy...
 2696                                    // (Note that the tests always do this implicitly, so you must manually test with something like:
 2697                                    //   "bindings": { "g z": ["workspace::SendKeystrokes", ": j <enter> u"]}
 2698                                    // )
 2699                                    window.draw(cx).clear();
 2700                                }
 2701                            })
 2702                            .ok();
 2703                        }
 2704
 2705                        *keystrokes.borrow_mut() = Default::default();
 2706                        log::error!("over 100 keystrokes passed to send_keystrokes");
 2707                    })
 2708                    .shared(),
 2709            );
 2710        }
 2711        state.task.clone().unwrap()
 2712    }
 2713
 2714    fn save_all_internal(
 2715        &mut self,
 2716        mut save_intent: SaveIntent,
 2717        window: &mut Window,
 2718        cx: &mut Context<Self>,
 2719    ) -> Task<Result<bool>> {
 2720        if self.project.read(cx).is_disconnected(cx) {
 2721            return Task::ready(Ok(true));
 2722        }
 2723        let dirty_items = self
 2724            .panes
 2725            .iter()
 2726            .flat_map(|pane| {
 2727                pane.read(cx).items().filter_map(|item| {
 2728                    if item.is_dirty(cx) {
 2729                        item.tab_content_text(0, cx);
 2730                        Some((pane.downgrade(), item.boxed_clone()))
 2731                    } else {
 2732                        None
 2733                    }
 2734                })
 2735            })
 2736            .collect::<Vec<_>>();
 2737
 2738        let project = self.project.clone();
 2739        cx.spawn_in(window, async move |workspace, cx| {
 2740            let dirty_items = if save_intent == SaveIntent::Close && !dirty_items.is_empty() {
 2741                let (serialize_tasks, remaining_dirty_items) =
 2742                    workspace.update_in(cx, |workspace, window, cx| {
 2743                        let mut remaining_dirty_items = Vec::new();
 2744                        let mut serialize_tasks = Vec::new();
 2745                        for (pane, item) in dirty_items {
 2746                            if let Some(task) = item
 2747                                .to_serializable_item_handle(cx)
 2748                                .and_then(|handle| handle.serialize(workspace, true, window, cx))
 2749                            {
 2750                                serialize_tasks.push(task);
 2751                            } else {
 2752                                remaining_dirty_items.push((pane, item));
 2753                            }
 2754                        }
 2755                        (serialize_tasks, remaining_dirty_items)
 2756                    })?;
 2757
 2758                futures::future::try_join_all(serialize_tasks).await?;
 2759
 2760                if remaining_dirty_items.len() > 1 {
 2761                    let answer = workspace.update_in(cx, |_, window, cx| {
 2762                        let detail = Pane::file_names_for_prompt(
 2763                            &mut remaining_dirty_items.iter().map(|(_, handle)| handle),
 2764                            cx,
 2765                        );
 2766                        window.prompt(
 2767                            PromptLevel::Warning,
 2768                            "Do you want to save all changes in the following files?",
 2769                            Some(&detail),
 2770                            &["Save all", "Discard all", "Cancel"],
 2771                            cx,
 2772                        )
 2773                    })?;
 2774                    match answer.await.log_err() {
 2775                        Some(0) => save_intent = SaveIntent::SaveAll,
 2776                        Some(1) => save_intent = SaveIntent::Skip,
 2777                        Some(2) => return Ok(false),
 2778                        _ => {}
 2779                    }
 2780                }
 2781
 2782                remaining_dirty_items
 2783            } else {
 2784                dirty_items
 2785            };
 2786
 2787            for (pane, item) in dirty_items {
 2788                let (singleton, project_entry_ids) = cx.update(|_, cx| {
 2789                    (
 2790                        item.buffer_kind(cx) == ItemBufferKind::Singleton,
 2791                        item.project_entry_ids(cx),
 2792                    )
 2793                })?;
 2794                if (singleton || !project_entry_ids.is_empty())
 2795                    && !Pane::save_item(project.clone(), &pane, &*item, save_intent, cx).await?
 2796                {
 2797                    return Ok(false);
 2798                }
 2799            }
 2800            Ok(true)
 2801        })
 2802    }
 2803
 2804    pub fn open_workspace_for_paths(
 2805        &mut self,
 2806        replace_current_window: bool,
 2807        paths: Vec<PathBuf>,
 2808        window: &mut Window,
 2809        cx: &mut Context<Self>,
 2810    ) -> Task<Result<()>> {
 2811        let window_handle = window.window_handle().downcast::<Self>();
 2812        let is_remote = self.project.read(cx).is_via_collab();
 2813        let has_worktree = self.project.read(cx).worktrees(cx).next().is_some();
 2814        let has_dirty_items = self.items(cx).any(|item| item.is_dirty(cx));
 2815
 2816        let window_to_replace = if replace_current_window {
 2817            window_handle
 2818        } else if is_remote || has_worktree || has_dirty_items {
 2819            None
 2820        } else {
 2821            window_handle
 2822        };
 2823        let app_state = self.app_state.clone();
 2824
 2825        cx.spawn(async move |_, cx| {
 2826            cx.update(|cx| {
 2827                open_paths(
 2828                    &paths,
 2829                    app_state,
 2830                    OpenOptions {
 2831                        replace_window: window_to_replace,
 2832                        ..Default::default()
 2833                    },
 2834                    cx,
 2835                )
 2836            })
 2837            .await?;
 2838            Ok(())
 2839        })
 2840    }
 2841
 2842    #[allow(clippy::type_complexity)]
 2843    pub fn open_paths(
 2844        &mut self,
 2845        mut abs_paths: Vec<PathBuf>,
 2846        options: OpenOptions,
 2847        pane: Option<WeakEntity<Pane>>,
 2848        window: &mut Window,
 2849        cx: &mut Context<Self>,
 2850    ) -> Task<Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>> {
 2851        let fs = self.app_state.fs.clone();
 2852
 2853        let caller_ordered_abs_paths = abs_paths.clone();
 2854
 2855        // Sort the paths to ensure we add worktrees for parents before their children.
 2856        abs_paths.sort_unstable();
 2857        cx.spawn_in(window, async move |this, cx| {
 2858            let mut tasks = Vec::with_capacity(abs_paths.len());
 2859
 2860            for abs_path in &abs_paths {
 2861                let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
 2862                    OpenVisible::All => Some(true),
 2863                    OpenVisible::None => Some(false),
 2864                    OpenVisible::OnlyFiles => match fs.metadata(abs_path).await.log_err() {
 2865                        Some(Some(metadata)) => Some(!metadata.is_dir),
 2866                        Some(None) => Some(true),
 2867                        None => None,
 2868                    },
 2869                    OpenVisible::OnlyDirectories => match fs.metadata(abs_path).await.log_err() {
 2870                        Some(Some(metadata)) => Some(metadata.is_dir),
 2871                        Some(None) => Some(false),
 2872                        None => None,
 2873                    },
 2874                };
 2875                let project_path = match visible {
 2876                    Some(visible) => match this
 2877                        .update(cx, |this, cx| {
 2878                            Workspace::project_path_for_path(
 2879                                this.project.clone(),
 2880                                abs_path,
 2881                                visible,
 2882                                cx,
 2883                            )
 2884                        })
 2885                        .log_err()
 2886                    {
 2887                        Some(project_path) => project_path.await.log_err(),
 2888                        None => None,
 2889                    },
 2890                    None => None,
 2891                };
 2892
 2893                let this = this.clone();
 2894                let abs_path: Arc<Path> = SanitizedPath::new(&abs_path).as_path().into();
 2895                let fs = fs.clone();
 2896                let pane = pane.clone();
 2897                let task = cx.spawn(async move |cx| {
 2898                    let (_worktree, project_path) = project_path?;
 2899                    if fs.is_dir(&abs_path).await {
 2900                        // Opening a directory should not race to update the active entry.
 2901                        // We'll select/reveal a deterministic final entry after all paths finish opening.
 2902                        None
 2903                    } else {
 2904                        Some(
 2905                            this.update_in(cx, |this, window, cx| {
 2906                                this.open_path(
 2907                                    project_path,
 2908                                    pane,
 2909                                    options.focus.unwrap_or(true),
 2910                                    window,
 2911                                    cx,
 2912                                )
 2913                            })
 2914                            .ok()?
 2915                            .await,
 2916                        )
 2917                    }
 2918                });
 2919                tasks.push(task);
 2920            }
 2921
 2922            let results = futures::future::join_all(tasks).await;
 2923
 2924            // Determine the winner using the fake/abstract FS metadata, not `Path::is_dir`.
 2925            let mut winner: Option<(PathBuf, bool)> = None;
 2926            for abs_path in caller_ordered_abs_paths.into_iter().rev() {
 2927                if let Some(Some(metadata)) = fs.metadata(&abs_path).await.log_err() {
 2928                    if !metadata.is_dir {
 2929                        winner = Some((abs_path, false));
 2930                        break;
 2931                    }
 2932                    if winner.is_none() {
 2933                        winner = Some((abs_path, true));
 2934                    }
 2935                } else if winner.is_none() {
 2936                    winner = Some((abs_path, false));
 2937                }
 2938            }
 2939
 2940            // Compute the winner entry id on the foreground thread and emit once, after all
 2941            // paths finish opening. This avoids races between concurrently-opening paths
 2942            // (directories in particular) and makes the resulting project panel selection
 2943            // deterministic.
 2944            if let Some((winner_abs_path, winner_is_dir)) = winner {
 2945                'emit_winner: {
 2946                    let winner_abs_path: Arc<Path> =
 2947                        SanitizedPath::new(&winner_abs_path).as_path().into();
 2948
 2949                    let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
 2950                        OpenVisible::All => true,
 2951                        OpenVisible::None => false,
 2952                        OpenVisible::OnlyFiles => !winner_is_dir,
 2953                        OpenVisible::OnlyDirectories => winner_is_dir,
 2954                    };
 2955
 2956                    let Some(worktree_task) = this
 2957                        .update(cx, |workspace, cx| {
 2958                            workspace.project.update(cx, |project, cx| {
 2959                                project.find_or_create_worktree(
 2960                                    winner_abs_path.as_ref(),
 2961                                    visible,
 2962                                    cx,
 2963                                )
 2964                            })
 2965                        })
 2966                        .ok()
 2967                    else {
 2968                        break 'emit_winner;
 2969                    };
 2970
 2971                    let Ok((worktree, _)) = worktree_task.await else {
 2972                        break 'emit_winner;
 2973                    };
 2974
 2975                    let Ok(Some(entry_id)) = this.update(cx, |_, cx| {
 2976                        let worktree = worktree.read(cx);
 2977                        let worktree_abs_path = worktree.abs_path();
 2978                        let entry = if winner_abs_path.as_ref() == worktree_abs_path.as_ref() {
 2979                            worktree.root_entry()
 2980                        } else {
 2981                            winner_abs_path
 2982                                .strip_prefix(worktree_abs_path.as_ref())
 2983                                .ok()
 2984                                .and_then(|relative_path| {
 2985                                    let relative_path =
 2986                                        RelPath::new(relative_path, PathStyle::local())
 2987                                            .log_err()?;
 2988                                    worktree.entry_for_path(&relative_path)
 2989                                })
 2990                        }?;
 2991                        Some(entry.id)
 2992                    }) else {
 2993                        break 'emit_winner;
 2994                    };
 2995
 2996                    this.update(cx, |workspace, cx| {
 2997                        workspace.project.update(cx, |_, cx| {
 2998                            cx.emit(project::Event::ActiveEntryChanged(Some(entry_id)));
 2999                        });
 3000                    })
 3001                    .ok();
 3002                }
 3003            }
 3004
 3005            results
 3006        })
 3007    }
 3008
 3009    pub fn open_resolved_path(
 3010        &mut self,
 3011        path: ResolvedPath,
 3012        window: &mut Window,
 3013        cx: &mut Context<Self>,
 3014    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3015        match path {
 3016            ResolvedPath::ProjectPath { project_path, .. } => {
 3017                self.open_path(project_path, None, true, window, cx)
 3018            }
 3019            ResolvedPath::AbsPath { path, .. } => self.open_abs_path(
 3020                PathBuf::from(path),
 3021                OpenOptions {
 3022                    visible: Some(OpenVisible::None),
 3023                    ..Default::default()
 3024                },
 3025                window,
 3026                cx,
 3027            ),
 3028        }
 3029    }
 3030
 3031    pub fn absolute_path_of_worktree(
 3032        &self,
 3033        worktree_id: WorktreeId,
 3034        cx: &mut Context<Self>,
 3035    ) -> Option<PathBuf> {
 3036        self.project
 3037            .read(cx)
 3038            .worktree_for_id(worktree_id, cx)
 3039            // TODO: use `abs_path` or `root_dir`
 3040            .map(|wt| wt.read(cx).abs_path().as_ref().to_path_buf())
 3041    }
 3042
 3043    fn add_folder_to_project(
 3044        &mut self,
 3045        _: &AddFolderToProject,
 3046        window: &mut Window,
 3047        cx: &mut Context<Self>,
 3048    ) {
 3049        let project = self.project.read(cx);
 3050        if project.is_via_collab() {
 3051            self.show_error(
 3052                &anyhow!("You cannot add folders to someone else's project"),
 3053                cx,
 3054            );
 3055            return;
 3056        }
 3057        let paths = self.prompt_for_open_path(
 3058            PathPromptOptions {
 3059                files: false,
 3060                directories: true,
 3061                multiple: true,
 3062                prompt: None,
 3063            },
 3064            DirectoryLister::Project(self.project.clone()),
 3065            window,
 3066            cx,
 3067        );
 3068        cx.spawn_in(window, async move |this, cx| {
 3069            if let Some(paths) = paths.await.log_err().flatten() {
 3070                let results = this
 3071                    .update_in(cx, |this, window, cx| {
 3072                        this.open_paths(
 3073                            paths,
 3074                            OpenOptions {
 3075                                visible: Some(OpenVisible::All),
 3076                                ..Default::default()
 3077                            },
 3078                            None,
 3079                            window,
 3080                            cx,
 3081                        )
 3082                    })?
 3083                    .await;
 3084                for result in results.into_iter().flatten() {
 3085                    result.log_err();
 3086                }
 3087            }
 3088            anyhow::Ok(())
 3089        })
 3090        .detach_and_log_err(cx);
 3091    }
 3092
 3093    pub fn project_path_for_path(
 3094        project: Entity<Project>,
 3095        abs_path: &Path,
 3096        visible: bool,
 3097        cx: &mut App,
 3098    ) -> Task<Result<(Entity<Worktree>, ProjectPath)>> {
 3099        let entry = project.update(cx, |project, cx| {
 3100            project.find_or_create_worktree(abs_path, visible, cx)
 3101        });
 3102        cx.spawn(async move |cx| {
 3103            let (worktree, path) = entry.await?;
 3104            let worktree_id = worktree.read_with(cx, |t, _| t.id());
 3105            Ok((worktree, ProjectPath { worktree_id, path }))
 3106        })
 3107    }
 3108
 3109    pub fn items<'a>(&'a self, cx: &'a App) -> impl 'a + Iterator<Item = &'a Box<dyn ItemHandle>> {
 3110        self.panes.iter().flat_map(|pane| pane.read(cx).items())
 3111    }
 3112
 3113    pub fn item_of_type<T: Item>(&self, cx: &App) -> Option<Entity<T>> {
 3114        self.items_of_type(cx).max_by_key(|item| item.item_id())
 3115    }
 3116
 3117    pub fn items_of_type<'a, T: Item>(
 3118        &'a self,
 3119        cx: &'a App,
 3120    ) -> impl 'a + Iterator<Item = Entity<T>> {
 3121        self.panes
 3122            .iter()
 3123            .flat_map(|pane| pane.read(cx).items_of_type())
 3124    }
 3125
 3126    pub fn active_item(&self, cx: &App) -> Option<Box<dyn ItemHandle>> {
 3127        self.active_pane().read(cx).active_item()
 3128    }
 3129
 3130    pub fn active_item_as<I: 'static>(&self, cx: &App) -> Option<Entity<I>> {
 3131        let item = self.active_item(cx)?;
 3132        item.to_any_view().downcast::<I>().ok()
 3133    }
 3134
 3135    fn active_project_path(&self, cx: &App) -> Option<ProjectPath> {
 3136        self.active_item(cx).and_then(|item| item.project_path(cx))
 3137    }
 3138
 3139    pub fn most_recent_active_path(&self, cx: &App) -> Option<PathBuf> {
 3140        self.recent_navigation_history_iter(cx)
 3141            .filter_map(|(path, abs_path)| {
 3142                let worktree = self
 3143                    .project
 3144                    .read(cx)
 3145                    .worktree_for_id(path.worktree_id, cx)?;
 3146                if worktree.read(cx).is_visible() {
 3147                    abs_path
 3148                } else {
 3149                    None
 3150                }
 3151            })
 3152            .next()
 3153    }
 3154
 3155    pub fn save_active_item(
 3156        &mut self,
 3157        save_intent: SaveIntent,
 3158        window: &mut Window,
 3159        cx: &mut App,
 3160    ) -> Task<Result<()>> {
 3161        let project = self.project.clone();
 3162        let pane = self.active_pane();
 3163        let item = pane.read(cx).active_item();
 3164        let pane = pane.downgrade();
 3165
 3166        window.spawn(cx, async move |cx| {
 3167            if let Some(item) = item {
 3168                Pane::save_item(project, &pane, item.as_ref(), save_intent, cx)
 3169                    .await
 3170                    .map(|_| ())
 3171            } else {
 3172                Ok(())
 3173            }
 3174        })
 3175    }
 3176
 3177    pub fn close_inactive_items_and_panes(
 3178        &mut self,
 3179        action: &CloseInactiveTabsAndPanes,
 3180        window: &mut Window,
 3181        cx: &mut Context<Self>,
 3182    ) {
 3183        if let Some(task) = self.close_all_internal(
 3184            true,
 3185            action.save_intent.unwrap_or(SaveIntent::Close),
 3186            window,
 3187            cx,
 3188        ) {
 3189            task.detach_and_log_err(cx)
 3190        }
 3191    }
 3192
 3193    pub fn close_all_items_and_panes(
 3194        &mut self,
 3195        action: &CloseAllItemsAndPanes,
 3196        window: &mut Window,
 3197        cx: &mut Context<Self>,
 3198    ) {
 3199        if let Some(task) = self.close_all_internal(
 3200            false,
 3201            action.save_intent.unwrap_or(SaveIntent::Close),
 3202            window,
 3203            cx,
 3204        ) {
 3205            task.detach_and_log_err(cx)
 3206        }
 3207    }
 3208
 3209    fn close_all_internal(
 3210        &mut self,
 3211        retain_active_pane: bool,
 3212        save_intent: SaveIntent,
 3213        window: &mut Window,
 3214        cx: &mut Context<Self>,
 3215    ) -> Option<Task<Result<()>>> {
 3216        let current_pane = self.active_pane();
 3217
 3218        let mut tasks = Vec::new();
 3219
 3220        if retain_active_pane {
 3221            let current_pane_close = current_pane.update(cx, |pane, cx| {
 3222                pane.close_other_items(
 3223                    &CloseOtherItems {
 3224                        save_intent: None,
 3225                        close_pinned: false,
 3226                    },
 3227                    None,
 3228                    window,
 3229                    cx,
 3230                )
 3231            });
 3232
 3233            tasks.push(current_pane_close);
 3234        }
 3235
 3236        for pane in self.panes() {
 3237            if retain_active_pane && pane.entity_id() == current_pane.entity_id() {
 3238                continue;
 3239            }
 3240
 3241            let close_pane_items = pane.update(cx, |pane: &mut Pane, cx| {
 3242                pane.close_all_items(
 3243                    &CloseAllItems {
 3244                        save_intent: Some(save_intent),
 3245                        close_pinned: false,
 3246                    },
 3247                    window,
 3248                    cx,
 3249                )
 3250            });
 3251
 3252            tasks.push(close_pane_items)
 3253        }
 3254
 3255        if tasks.is_empty() {
 3256            None
 3257        } else {
 3258            Some(cx.spawn_in(window, async move |_, _| {
 3259                for task in tasks {
 3260                    task.await?
 3261                }
 3262                Ok(())
 3263            }))
 3264        }
 3265    }
 3266
 3267    pub fn is_dock_at_position_open(&self, position: DockPosition, cx: &mut Context<Self>) -> bool {
 3268        self.dock_at_position(position).read(cx).is_open()
 3269    }
 3270
 3271    pub fn toggle_dock(
 3272        &mut self,
 3273        dock_side: DockPosition,
 3274        window: &mut Window,
 3275        cx: &mut Context<Self>,
 3276    ) {
 3277        let mut focus_center = false;
 3278        let mut reveal_dock = false;
 3279
 3280        let other_is_zoomed = self.zoomed.is_some() && self.zoomed_position != Some(dock_side);
 3281        let was_visible = self.is_dock_at_position_open(dock_side, cx) && !other_is_zoomed;
 3282
 3283        if let Some(panel) = self.dock_at_position(dock_side).read(cx).active_panel() {
 3284            telemetry::event!(
 3285                "Panel Button Clicked",
 3286                name = panel.persistent_name(),
 3287                toggle_state = !was_visible
 3288            );
 3289        }
 3290        if was_visible {
 3291            self.save_open_dock_positions(cx);
 3292        }
 3293
 3294        let dock = self.dock_at_position(dock_side);
 3295        dock.update(cx, |dock, cx| {
 3296            dock.set_open(!was_visible, window, cx);
 3297
 3298            if dock.active_panel().is_none() {
 3299                let Some(panel_ix) = dock
 3300                    .first_enabled_panel_idx(cx)
 3301                    .log_with_level(log::Level::Info)
 3302                else {
 3303                    return;
 3304                };
 3305                dock.activate_panel(panel_ix, window, cx);
 3306            }
 3307
 3308            if let Some(active_panel) = dock.active_panel() {
 3309                if was_visible {
 3310                    if active_panel
 3311                        .panel_focus_handle(cx)
 3312                        .contains_focused(window, cx)
 3313                    {
 3314                        focus_center = true;
 3315                    }
 3316                } else {
 3317                    let focus_handle = &active_panel.panel_focus_handle(cx);
 3318                    window.focus(focus_handle, cx);
 3319                    reveal_dock = true;
 3320                }
 3321            }
 3322        });
 3323
 3324        if reveal_dock {
 3325            self.dismiss_zoomed_items_to_reveal(Some(dock_side), window, cx);
 3326        }
 3327
 3328        if focus_center {
 3329            self.active_pane
 3330                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx))
 3331        }
 3332
 3333        cx.notify();
 3334        self.serialize_workspace(window, cx);
 3335    }
 3336
 3337    fn active_dock(&self, window: &Window, cx: &Context<Self>) -> Option<&Entity<Dock>> {
 3338        self.all_docks().into_iter().find(|&dock| {
 3339            dock.read(cx).is_open() && dock.focus_handle(cx).contains_focused(window, cx)
 3340        })
 3341    }
 3342
 3343    fn close_active_dock(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
 3344        if let Some(dock) = self.active_dock(window, cx).cloned() {
 3345            self.save_open_dock_positions(cx);
 3346            dock.update(cx, |dock, cx| {
 3347                dock.set_open(false, window, cx);
 3348            });
 3349            return true;
 3350        }
 3351        false
 3352    }
 3353
 3354    pub fn close_all_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3355        self.save_open_dock_positions(cx);
 3356        for dock in self.all_docks() {
 3357            dock.update(cx, |dock, cx| {
 3358                dock.set_open(false, window, cx);
 3359            });
 3360        }
 3361
 3362        cx.focus_self(window);
 3363        cx.notify();
 3364        self.serialize_workspace(window, cx);
 3365    }
 3366
 3367    fn get_open_dock_positions(&self, cx: &Context<Self>) -> Vec<DockPosition> {
 3368        self.all_docks()
 3369            .into_iter()
 3370            .filter_map(|dock| {
 3371                let dock_ref = dock.read(cx);
 3372                if dock_ref.is_open() {
 3373                    Some(dock_ref.position())
 3374                } else {
 3375                    None
 3376                }
 3377            })
 3378            .collect()
 3379    }
 3380
 3381    /// Saves the positions of currently open docks.
 3382    ///
 3383    /// Updates `last_open_dock_positions` with positions of all currently open
 3384    /// docks, to later be restored by the 'Toggle All Docks' action.
 3385    fn save_open_dock_positions(&mut self, cx: &mut Context<Self>) {
 3386        let open_dock_positions = self.get_open_dock_positions(cx);
 3387        if !open_dock_positions.is_empty() {
 3388            self.last_open_dock_positions = open_dock_positions;
 3389        }
 3390    }
 3391
 3392    /// Toggles all docks between open and closed states.
 3393    ///
 3394    /// If any docks are open, closes all and remembers their positions. If all
 3395    /// docks are closed, restores the last remembered dock configuration.
 3396    fn toggle_all_docks(
 3397        &mut self,
 3398        _: &ToggleAllDocks,
 3399        window: &mut Window,
 3400        cx: &mut Context<Self>,
 3401    ) {
 3402        let open_dock_positions = self.get_open_dock_positions(cx);
 3403
 3404        if !open_dock_positions.is_empty() {
 3405            self.close_all_docks(window, cx);
 3406        } else if !self.last_open_dock_positions.is_empty() {
 3407            self.restore_last_open_docks(window, cx);
 3408        }
 3409    }
 3410
 3411    /// Reopens docks from the most recently remembered configuration.
 3412    ///
 3413    /// Opens all docks whose positions are stored in `last_open_dock_positions`
 3414    /// and clears the stored positions.
 3415    fn restore_last_open_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3416        let positions_to_open = std::mem::take(&mut self.last_open_dock_positions);
 3417
 3418        for position in positions_to_open {
 3419            let dock = self.dock_at_position(position);
 3420            dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
 3421        }
 3422
 3423        cx.focus_self(window);
 3424        cx.notify();
 3425        self.serialize_workspace(window, cx);
 3426    }
 3427
 3428    /// Transfer focus to the panel of the given type.
 3429    pub fn focus_panel<T: Panel>(
 3430        &mut self,
 3431        window: &mut Window,
 3432        cx: &mut Context<Self>,
 3433    ) -> Option<Entity<T>> {
 3434        let panel = self.focus_or_unfocus_panel::<T>(window, cx, |_, _, _| true)?;
 3435        panel.to_any().downcast().ok()
 3436    }
 3437
 3438    /// Focus the panel of the given type if it isn't already focused. If it is
 3439    /// already focused, then transfer focus back to the workspace center.
 3440    pub fn toggle_panel_focus<T: Panel>(
 3441        &mut self,
 3442        window: &mut Window,
 3443        cx: &mut Context<Self>,
 3444    ) -> bool {
 3445        let mut did_focus_panel = false;
 3446        self.focus_or_unfocus_panel::<T>(window, cx, |panel, window, cx| {
 3447            did_focus_panel = !panel.panel_focus_handle(cx).contains_focused(window, cx);
 3448            did_focus_panel
 3449        });
 3450
 3451        telemetry::event!(
 3452            "Panel Button Clicked",
 3453            name = T::persistent_name(),
 3454            toggle_state = did_focus_panel
 3455        );
 3456
 3457        did_focus_panel
 3458    }
 3459
 3460    pub fn activate_panel_for_proto_id(
 3461        &mut self,
 3462        panel_id: PanelId,
 3463        window: &mut Window,
 3464        cx: &mut Context<Self>,
 3465    ) -> Option<Arc<dyn PanelHandle>> {
 3466        let mut panel = None;
 3467        for dock in self.all_docks() {
 3468            if let Some(panel_index) = dock.read(cx).panel_index_for_proto_id(panel_id) {
 3469                panel = dock.update(cx, |dock, cx| {
 3470                    dock.activate_panel(panel_index, window, cx);
 3471                    dock.set_open(true, window, cx);
 3472                    dock.active_panel().cloned()
 3473                });
 3474                break;
 3475            }
 3476        }
 3477
 3478        if panel.is_some() {
 3479            cx.notify();
 3480            self.serialize_workspace(window, cx);
 3481        }
 3482
 3483        panel
 3484    }
 3485
 3486    /// Focus or unfocus the given panel type, depending on the given callback.
 3487    fn focus_or_unfocus_panel<T: Panel>(
 3488        &mut self,
 3489        window: &mut Window,
 3490        cx: &mut Context<Self>,
 3491        mut should_focus: impl FnMut(&dyn PanelHandle, &mut Window, &mut Context<Dock>) -> bool,
 3492    ) -> Option<Arc<dyn PanelHandle>> {
 3493        let mut result_panel = None;
 3494        let mut serialize = false;
 3495        for dock in self.all_docks() {
 3496            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3497                let mut focus_center = false;
 3498                let panel = dock.update(cx, |dock, cx| {
 3499                    dock.activate_panel(panel_index, window, cx);
 3500
 3501                    let panel = dock.active_panel().cloned();
 3502                    if let Some(panel) = panel.as_ref() {
 3503                        if should_focus(&**panel, window, cx) {
 3504                            dock.set_open(true, window, cx);
 3505                            panel.panel_focus_handle(cx).focus(window, cx);
 3506                        } else {
 3507                            focus_center = true;
 3508                        }
 3509                    }
 3510                    panel
 3511                });
 3512
 3513                if focus_center {
 3514                    self.active_pane
 3515                        .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx))
 3516                }
 3517
 3518                result_panel = panel;
 3519                serialize = true;
 3520                break;
 3521            }
 3522        }
 3523
 3524        if serialize {
 3525            self.serialize_workspace(window, cx);
 3526        }
 3527
 3528        cx.notify();
 3529        result_panel
 3530    }
 3531
 3532    /// Open the panel of the given type
 3533    pub fn open_panel<T: Panel>(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3534        for dock in self.all_docks() {
 3535            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3536                dock.update(cx, |dock, cx| {
 3537                    dock.activate_panel(panel_index, window, cx);
 3538                    dock.set_open(true, window, cx);
 3539                });
 3540            }
 3541        }
 3542    }
 3543
 3544    pub fn close_panel<T: Panel>(&self, window: &mut Window, cx: &mut Context<Self>) {
 3545        for dock in self.all_docks().iter() {
 3546            dock.update(cx, |dock, cx| {
 3547                if dock.panel::<T>().is_some() {
 3548                    dock.set_open(false, window, cx)
 3549                }
 3550            })
 3551        }
 3552    }
 3553
 3554    pub fn panel<T: Panel>(&self, cx: &App) -> Option<Entity<T>> {
 3555        self.all_docks()
 3556            .iter()
 3557            .find_map(|dock| dock.read(cx).panel::<T>())
 3558    }
 3559
 3560    fn dismiss_zoomed_items_to_reveal(
 3561        &mut self,
 3562        dock_to_reveal: Option<DockPosition>,
 3563        window: &mut Window,
 3564        cx: &mut Context<Self>,
 3565    ) {
 3566        // If a center pane is zoomed, unzoom it.
 3567        for pane in &self.panes {
 3568            if pane != &self.active_pane || dock_to_reveal.is_some() {
 3569                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 3570            }
 3571        }
 3572
 3573        // If another dock is zoomed, hide it.
 3574        let mut focus_center = false;
 3575        for dock in self.all_docks() {
 3576            dock.update(cx, |dock, cx| {
 3577                if Some(dock.position()) != dock_to_reveal
 3578                    && let Some(panel) = dock.active_panel()
 3579                    && panel.is_zoomed(window, cx)
 3580                {
 3581                    focus_center |= panel.panel_focus_handle(cx).contains_focused(window, cx);
 3582                    dock.set_open(false, window, cx);
 3583                }
 3584            });
 3585        }
 3586
 3587        if focus_center {
 3588            self.active_pane
 3589                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx))
 3590        }
 3591
 3592        if self.zoomed_position != dock_to_reveal {
 3593            self.zoomed = None;
 3594            self.zoomed_position = None;
 3595            cx.emit(Event::ZoomChanged);
 3596        }
 3597
 3598        cx.notify();
 3599    }
 3600
 3601    fn add_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 3602        let pane = cx.new(|cx| {
 3603            let mut pane = Pane::new(
 3604                self.weak_handle(),
 3605                self.project.clone(),
 3606                self.pane_history_timestamp.clone(),
 3607                None,
 3608                NewFile.boxed_clone(),
 3609                true,
 3610                window,
 3611                cx,
 3612            );
 3613            pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 3614            pane
 3615        });
 3616        cx.subscribe_in(&pane, window, Self::handle_pane_event)
 3617            .detach();
 3618        self.panes.push(pane.clone());
 3619
 3620        window.focus(&pane.focus_handle(cx), cx);
 3621
 3622        cx.emit(Event::PaneAdded(pane.clone()));
 3623        pane
 3624    }
 3625
 3626    pub fn add_item_to_center(
 3627        &mut self,
 3628        item: Box<dyn ItemHandle>,
 3629        window: &mut Window,
 3630        cx: &mut Context<Self>,
 3631    ) -> bool {
 3632        if let Some(center_pane) = self.last_active_center_pane.clone() {
 3633            if let Some(center_pane) = center_pane.upgrade() {
 3634                center_pane.update(cx, |pane, cx| {
 3635                    pane.add_item(item, true, true, None, window, cx)
 3636                });
 3637                true
 3638            } else {
 3639                false
 3640            }
 3641        } else {
 3642            false
 3643        }
 3644    }
 3645
 3646    pub fn add_item_to_active_pane(
 3647        &mut self,
 3648        item: Box<dyn ItemHandle>,
 3649        destination_index: Option<usize>,
 3650        focus_item: bool,
 3651        window: &mut Window,
 3652        cx: &mut App,
 3653    ) {
 3654        self.add_item(
 3655            self.active_pane.clone(),
 3656            item,
 3657            destination_index,
 3658            false,
 3659            focus_item,
 3660            window,
 3661            cx,
 3662        )
 3663    }
 3664
 3665    pub fn add_item(
 3666        &mut self,
 3667        pane: Entity<Pane>,
 3668        item: Box<dyn ItemHandle>,
 3669        destination_index: Option<usize>,
 3670        activate_pane: bool,
 3671        focus_item: bool,
 3672        window: &mut Window,
 3673        cx: &mut App,
 3674    ) {
 3675        pane.update(cx, |pane, cx| {
 3676            pane.add_item(
 3677                item,
 3678                activate_pane,
 3679                focus_item,
 3680                destination_index,
 3681                window,
 3682                cx,
 3683            )
 3684        });
 3685    }
 3686
 3687    pub fn split_item(
 3688        &mut self,
 3689        split_direction: SplitDirection,
 3690        item: Box<dyn ItemHandle>,
 3691        window: &mut Window,
 3692        cx: &mut Context<Self>,
 3693    ) {
 3694        let new_pane = self.split_pane(self.active_pane.clone(), split_direction, window, cx);
 3695        self.add_item(new_pane, item, None, true, true, window, cx);
 3696    }
 3697
 3698    pub fn open_abs_path(
 3699        &mut self,
 3700        abs_path: PathBuf,
 3701        options: OpenOptions,
 3702        window: &mut Window,
 3703        cx: &mut Context<Self>,
 3704    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3705        cx.spawn_in(window, async move |workspace, cx| {
 3706            let open_paths_task_result = workspace
 3707                .update_in(cx, |workspace, window, cx| {
 3708                    workspace.open_paths(vec![abs_path.clone()], options, None, window, cx)
 3709                })
 3710                .with_context(|| format!("open abs path {abs_path:?} task spawn"))?
 3711                .await;
 3712            anyhow::ensure!(
 3713                open_paths_task_result.len() == 1,
 3714                "open abs path {abs_path:?} task returned incorrect number of results"
 3715            );
 3716            match open_paths_task_result
 3717                .into_iter()
 3718                .next()
 3719                .expect("ensured single task result")
 3720            {
 3721                Some(open_result) => {
 3722                    open_result.with_context(|| format!("open abs path {abs_path:?} task join"))
 3723                }
 3724                None => anyhow::bail!("open abs path {abs_path:?} task returned None"),
 3725            }
 3726        })
 3727    }
 3728
 3729    pub fn split_abs_path(
 3730        &mut self,
 3731        abs_path: PathBuf,
 3732        visible: bool,
 3733        window: &mut Window,
 3734        cx: &mut Context<Self>,
 3735    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3736        let project_path_task =
 3737            Workspace::project_path_for_path(self.project.clone(), &abs_path, visible, cx);
 3738        cx.spawn_in(window, async move |this, cx| {
 3739            let (_, path) = project_path_task.await?;
 3740            this.update_in(cx, |this, window, cx| this.split_path(path, window, cx))?
 3741                .await
 3742        })
 3743    }
 3744
 3745    pub fn open_path(
 3746        &mut self,
 3747        path: impl Into<ProjectPath>,
 3748        pane: Option<WeakEntity<Pane>>,
 3749        focus_item: bool,
 3750        window: &mut Window,
 3751        cx: &mut App,
 3752    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3753        self.open_path_preview(path, pane, focus_item, false, true, window, cx)
 3754    }
 3755
 3756    pub fn open_path_preview(
 3757        &mut self,
 3758        path: impl Into<ProjectPath>,
 3759        pane: Option<WeakEntity<Pane>>,
 3760        focus_item: bool,
 3761        allow_preview: bool,
 3762        activate: bool,
 3763        window: &mut Window,
 3764        cx: &mut App,
 3765    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3766        let pane = pane.unwrap_or_else(|| {
 3767            self.last_active_center_pane.clone().unwrap_or_else(|| {
 3768                self.panes
 3769                    .first()
 3770                    .expect("There must be an active pane")
 3771                    .downgrade()
 3772            })
 3773        });
 3774
 3775        let project_path = path.into();
 3776        let task = self.load_path(project_path.clone(), window, cx);
 3777        window.spawn(cx, async move |cx| {
 3778            let (project_entry_id, build_item) = task.await?;
 3779
 3780            pane.update_in(cx, |pane, window, cx| {
 3781                pane.open_item(
 3782                    project_entry_id,
 3783                    project_path,
 3784                    focus_item,
 3785                    allow_preview,
 3786                    activate,
 3787                    None,
 3788                    window,
 3789                    cx,
 3790                    build_item,
 3791                )
 3792            })
 3793        })
 3794    }
 3795
 3796    pub fn split_path(
 3797        &mut self,
 3798        path: impl Into<ProjectPath>,
 3799        window: &mut Window,
 3800        cx: &mut Context<Self>,
 3801    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3802        self.split_path_preview(path, false, None, window, cx)
 3803    }
 3804
 3805    pub fn split_path_preview(
 3806        &mut self,
 3807        path: impl Into<ProjectPath>,
 3808        allow_preview: bool,
 3809        split_direction: Option<SplitDirection>,
 3810        window: &mut Window,
 3811        cx: &mut Context<Self>,
 3812    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3813        let pane = self.last_active_center_pane.clone().unwrap_or_else(|| {
 3814            self.panes
 3815                .first()
 3816                .expect("There must be an active pane")
 3817                .downgrade()
 3818        });
 3819
 3820        if let Member::Pane(center_pane) = &self.center.root
 3821            && center_pane.read(cx).items_len() == 0
 3822        {
 3823            return self.open_path(path, Some(pane), true, window, cx);
 3824        }
 3825
 3826        let project_path = path.into();
 3827        let task = self.load_path(project_path.clone(), window, cx);
 3828        cx.spawn_in(window, async move |this, cx| {
 3829            let (project_entry_id, build_item) = task.await?;
 3830            this.update_in(cx, move |this, window, cx| -> Option<_> {
 3831                let pane = pane.upgrade()?;
 3832                let new_pane = this.split_pane(
 3833                    pane,
 3834                    split_direction.unwrap_or(SplitDirection::Right),
 3835                    window,
 3836                    cx,
 3837                );
 3838                new_pane.update(cx, |new_pane, cx| {
 3839                    Some(new_pane.open_item(
 3840                        project_entry_id,
 3841                        project_path,
 3842                        true,
 3843                        allow_preview,
 3844                        true,
 3845                        None,
 3846                        window,
 3847                        cx,
 3848                        build_item,
 3849                    ))
 3850                })
 3851            })
 3852            .map(|option| option.context("pane was dropped"))?
 3853        })
 3854    }
 3855
 3856    fn load_path(
 3857        &mut self,
 3858        path: ProjectPath,
 3859        window: &mut Window,
 3860        cx: &mut App,
 3861    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
 3862        let registry = cx.default_global::<ProjectItemRegistry>().clone();
 3863        registry.open_path(self.project(), &path, window, cx)
 3864    }
 3865
 3866    pub fn find_project_item<T>(
 3867        &self,
 3868        pane: &Entity<Pane>,
 3869        project_item: &Entity<T::Item>,
 3870        cx: &App,
 3871    ) -> Option<Entity<T>>
 3872    where
 3873        T: ProjectItem,
 3874    {
 3875        use project::ProjectItem as _;
 3876        let project_item = project_item.read(cx);
 3877        let entry_id = project_item.entry_id(cx);
 3878        let project_path = project_item.project_path(cx);
 3879
 3880        let mut item = None;
 3881        if let Some(entry_id) = entry_id {
 3882            item = pane.read(cx).item_for_entry(entry_id, cx);
 3883        }
 3884        if item.is_none()
 3885            && let Some(project_path) = project_path
 3886        {
 3887            item = pane.read(cx).item_for_path(project_path, cx);
 3888        }
 3889
 3890        item.and_then(|item| item.downcast::<T>())
 3891    }
 3892
 3893    pub fn is_project_item_open<T>(
 3894        &self,
 3895        pane: &Entity<Pane>,
 3896        project_item: &Entity<T::Item>,
 3897        cx: &App,
 3898    ) -> bool
 3899    where
 3900        T: ProjectItem,
 3901    {
 3902        self.find_project_item::<T>(pane, project_item, cx)
 3903            .is_some()
 3904    }
 3905
 3906    pub fn open_project_item<T>(
 3907        &mut self,
 3908        pane: Entity<Pane>,
 3909        project_item: Entity<T::Item>,
 3910        activate_pane: bool,
 3911        focus_item: bool,
 3912        keep_old_preview: bool,
 3913        allow_new_preview: bool,
 3914        window: &mut Window,
 3915        cx: &mut Context<Self>,
 3916    ) -> Entity<T>
 3917    where
 3918        T: ProjectItem,
 3919    {
 3920        let old_item_id = pane.read(cx).active_item().map(|item| item.item_id());
 3921
 3922        if let Some(item) = self.find_project_item(&pane, &project_item, cx) {
 3923            if !keep_old_preview
 3924                && let Some(old_id) = old_item_id
 3925                && old_id != item.item_id()
 3926            {
 3927                // switching to a different item, so unpreview old active item
 3928                pane.update(cx, |pane, _| {
 3929                    pane.unpreview_item_if_preview(old_id);
 3930                });
 3931            }
 3932
 3933            self.activate_item(&item, activate_pane, focus_item, window, cx);
 3934            if !allow_new_preview {
 3935                pane.update(cx, |pane, _| {
 3936                    pane.unpreview_item_if_preview(item.item_id());
 3937                });
 3938            }
 3939            return item;
 3940        }
 3941
 3942        let item = pane.update(cx, |pane, cx| {
 3943            cx.new(|cx| {
 3944                T::for_project_item(self.project().clone(), Some(pane), project_item, window, cx)
 3945            })
 3946        });
 3947        let mut destination_index = None;
 3948        pane.update(cx, |pane, cx| {
 3949            if !keep_old_preview && let Some(old_id) = old_item_id {
 3950                pane.unpreview_item_if_preview(old_id);
 3951            }
 3952            if allow_new_preview {
 3953                destination_index = pane.replace_preview_item_id(item.item_id(), window, cx);
 3954            }
 3955        });
 3956
 3957        self.add_item(
 3958            pane,
 3959            Box::new(item.clone()),
 3960            destination_index,
 3961            activate_pane,
 3962            focus_item,
 3963            window,
 3964            cx,
 3965        );
 3966        item
 3967    }
 3968
 3969    pub fn open_shared_screen(
 3970        &mut self,
 3971        peer_id: PeerId,
 3972        window: &mut Window,
 3973        cx: &mut Context<Self>,
 3974    ) {
 3975        if let Some(shared_screen) =
 3976            self.shared_screen_for_peer(peer_id, &self.active_pane, window, cx)
 3977        {
 3978            self.active_pane.update(cx, |pane, cx| {
 3979                pane.add_item(Box::new(shared_screen), false, true, None, window, cx)
 3980            });
 3981        }
 3982    }
 3983
 3984    pub fn activate_item(
 3985        &mut self,
 3986        item: &dyn ItemHandle,
 3987        activate_pane: bool,
 3988        focus_item: bool,
 3989        window: &mut Window,
 3990        cx: &mut App,
 3991    ) -> bool {
 3992        let result = self.panes.iter().find_map(|pane| {
 3993            pane.read(cx)
 3994                .index_for_item(item)
 3995                .map(|ix| (pane.clone(), ix))
 3996        });
 3997        if let Some((pane, ix)) = result {
 3998            pane.update(cx, |pane, cx| {
 3999                pane.activate_item(ix, activate_pane, focus_item, window, cx)
 4000            });
 4001            true
 4002        } else {
 4003            false
 4004        }
 4005    }
 4006
 4007    fn activate_pane_at_index(
 4008        &mut self,
 4009        action: &ActivatePane,
 4010        window: &mut Window,
 4011        cx: &mut Context<Self>,
 4012    ) {
 4013        let panes = self.center.panes();
 4014        if let Some(pane) = panes.get(action.0).map(|p| (*p).clone()) {
 4015            window.focus(&pane.focus_handle(cx), cx);
 4016        } else {
 4017            self.split_and_clone(self.active_pane.clone(), SplitDirection::Right, window, cx)
 4018                .detach();
 4019        }
 4020    }
 4021
 4022    fn move_item_to_pane_at_index(
 4023        &mut self,
 4024        action: &MoveItemToPane,
 4025        window: &mut Window,
 4026        cx: &mut Context<Self>,
 4027    ) {
 4028        let panes = self.center.panes();
 4029        let destination = match panes.get(action.destination) {
 4030            Some(&destination) => destination.clone(),
 4031            None => {
 4032                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 4033                    return;
 4034                }
 4035                let direction = SplitDirection::Right;
 4036                let split_off_pane = self
 4037                    .find_pane_in_direction(direction, cx)
 4038                    .unwrap_or_else(|| self.active_pane.clone());
 4039                let new_pane = self.add_pane(window, cx);
 4040                if self
 4041                    .center
 4042                    .split(&split_off_pane, &new_pane, direction, cx)
 4043                    .log_err()
 4044                    .is_none()
 4045                {
 4046                    return;
 4047                };
 4048                new_pane
 4049            }
 4050        };
 4051
 4052        if action.clone {
 4053            if self
 4054                .active_pane
 4055                .read(cx)
 4056                .active_item()
 4057                .is_some_and(|item| item.can_split(cx))
 4058            {
 4059                clone_active_item(
 4060                    self.database_id(),
 4061                    &self.active_pane,
 4062                    &destination,
 4063                    action.focus,
 4064                    window,
 4065                    cx,
 4066                );
 4067                return;
 4068            }
 4069        }
 4070        move_active_item(
 4071            &self.active_pane,
 4072            &destination,
 4073            action.focus,
 4074            true,
 4075            window,
 4076            cx,
 4077        )
 4078    }
 4079
 4080    pub fn activate_next_pane(&mut self, window: &mut Window, cx: &mut App) {
 4081        let panes = self.center.panes();
 4082        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 4083            let next_ix = (ix + 1) % panes.len();
 4084            let next_pane = panes[next_ix].clone();
 4085            window.focus(&next_pane.focus_handle(cx), cx);
 4086        }
 4087    }
 4088
 4089    pub fn activate_previous_pane(&mut self, window: &mut Window, cx: &mut App) {
 4090        let panes = self.center.panes();
 4091        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 4092            let prev_ix = cmp::min(ix.wrapping_sub(1), panes.len() - 1);
 4093            let prev_pane = panes[prev_ix].clone();
 4094            window.focus(&prev_pane.focus_handle(cx), cx);
 4095        }
 4096    }
 4097
 4098    pub fn activate_pane_in_direction(
 4099        &mut self,
 4100        direction: SplitDirection,
 4101        window: &mut Window,
 4102        cx: &mut App,
 4103    ) {
 4104        use ActivateInDirectionTarget as Target;
 4105        enum Origin {
 4106            LeftDock,
 4107            RightDock,
 4108            BottomDock,
 4109            Center,
 4110        }
 4111
 4112        let origin: Origin = [
 4113            (&self.left_dock, Origin::LeftDock),
 4114            (&self.right_dock, Origin::RightDock),
 4115            (&self.bottom_dock, Origin::BottomDock),
 4116        ]
 4117        .into_iter()
 4118        .find_map(|(dock, origin)| {
 4119            if dock.focus_handle(cx).contains_focused(window, cx) && dock.read(cx).is_open() {
 4120                Some(origin)
 4121            } else {
 4122                None
 4123            }
 4124        })
 4125        .unwrap_or(Origin::Center);
 4126
 4127        let get_last_active_pane = || {
 4128            let pane = self
 4129                .last_active_center_pane
 4130                .clone()
 4131                .unwrap_or_else(|| {
 4132                    self.panes
 4133                        .first()
 4134                        .expect("There must be an active pane")
 4135                        .downgrade()
 4136                })
 4137                .upgrade()?;
 4138            (pane.read(cx).items_len() != 0).then_some(pane)
 4139        };
 4140
 4141        let try_dock =
 4142            |dock: &Entity<Dock>| dock.read(cx).is_open().then(|| Target::Dock(dock.clone()));
 4143
 4144        let target = match (origin, direction) {
 4145            // We're in the center, so we first try to go to a different pane,
 4146            // otherwise try to go to a dock.
 4147            (Origin::Center, direction) => {
 4148                if let Some(pane) = self.find_pane_in_direction(direction, cx) {
 4149                    Some(Target::Pane(pane))
 4150                } else {
 4151                    match direction {
 4152                        SplitDirection::Up => None,
 4153                        SplitDirection::Down => try_dock(&self.bottom_dock),
 4154                        SplitDirection::Left => try_dock(&self.left_dock),
 4155                        SplitDirection::Right => try_dock(&self.right_dock),
 4156                    }
 4157                }
 4158            }
 4159
 4160            (Origin::LeftDock, SplitDirection::Right) => {
 4161                if let Some(last_active_pane) = get_last_active_pane() {
 4162                    Some(Target::Pane(last_active_pane))
 4163                } else {
 4164                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.right_dock))
 4165                }
 4166            }
 4167
 4168            (Origin::LeftDock, SplitDirection::Down)
 4169            | (Origin::RightDock, SplitDirection::Down) => try_dock(&self.bottom_dock),
 4170
 4171            (Origin::BottomDock, SplitDirection::Up) => get_last_active_pane().map(Target::Pane),
 4172            (Origin::BottomDock, SplitDirection::Left) => try_dock(&self.left_dock),
 4173            (Origin::BottomDock, SplitDirection::Right) => try_dock(&self.right_dock),
 4174
 4175            (Origin::RightDock, SplitDirection::Left) => {
 4176                if let Some(last_active_pane) = get_last_active_pane() {
 4177                    Some(Target::Pane(last_active_pane))
 4178                } else {
 4179                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.left_dock))
 4180                }
 4181            }
 4182
 4183            _ => None,
 4184        };
 4185
 4186        match target {
 4187            Some(ActivateInDirectionTarget::Pane(pane)) => {
 4188                let pane = pane.read(cx);
 4189                if let Some(item) = pane.active_item() {
 4190                    item.item_focus_handle(cx).focus(window, cx);
 4191                } else {
 4192                    log::error!(
 4193                        "Could not find a focus target when in switching focus in {direction} direction for a pane",
 4194                    );
 4195                }
 4196            }
 4197            Some(ActivateInDirectionTarget::Dock(dock)) => {
 4198                // Defer this to avoid a panic when the dock's active panel is already on the stack.
 4199                window.defer(cx, move |window, cx| {
 4200                    let dock = dock.read(cx);
 4201                    if let Some(panel) = dock.active_panel() {
 4202                        panel.panel_focus_handle(cx).focus(window, cx);
 4203                    } else {
 4204                        log::error!("Could not find a focus target when in switching focus in {direction} direction for a {:?} dock", dock.position());
 4205                    }
 4206                })
 4207            }
 4208            None => {}
 4209        }
 4210    }
 4211
 4212    pub fn move_item_to_pane_in_direction(
 4213        &mut self,
 4214        action: &MoveItemToPaneInDirection,
 4215        window: &mut Window,
 4216        cx: &mut Context<Self>,
 4217    ) {
 4218        let destination = match self.find_pane_in_direction(action.direction, cx) {
 4219            Some(destination) => destination,
 4220            None => {
 4221                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 4222                    return;
 4223                }
 4224                let new_pane = self.add_pane(window, cx);
 4225                if self
 4226                    .center
 4227                    .split(&self.active_pane, &new_pane, action.direction, cx)
 4228                    .log_err()
 4229                    .is_none()
 4230                {
 4231                    return;
 4232                };
 4233                new_pane
 4234            }
 4235        };
 4236
 4237        if action.clone {
 4238            if self
 4239                .active_pane
 4240                .read(cx)
 4241                .active_item()
 4242                .is_some_and(|item| item.can_split(cx))
 4243            {
 4244                clone_active_item(
 4245                    self.database_id(),
 4246                    &self.active_pane,
 4247                    &destination,
 4248                    action.focus,
 4249                    window,
 4250                    cx,
 4251                );
 4252                return;
 4253            }
 4254        }
 4255        move_active_item(
 4256            &self.active_pane,
 4257            &destination,
 4258            action.focus,
 4259            true,
 4260            window,
 4261            cx,
 4262        );
 4263    }
 4264
 4265    pub fn bounding_box_for_pane(&self, pane: &Entity<Pane>) -> Option<Bounds<Pixels>> {
 4266        self.center.bounding_box_for_pane(pane)
 4267    }
 4268
 4269    pub fn find_pane_in_direction(
 4270        &mut self,
 4271        direction: SplitDirection,
 4272        cx: &App,
 4273    ) -> Option<Entity<Pane>> {
 4274        self.center
 4275            .find_pane_in_direction(&self.active_pane, direction, cx)
 4276            .cloned()
 4277    }
 4278
 4279    pub fn swap_pane_in_direction(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 4280        if let Some(to) = self.find_pane_in_direction(direction, cx) {
 4281            self.center.swap(&self.active_pane, &to, cx);
 4282            cx.notify();
 4283        }
 4284    }
 4285
 4286    pub fn move_pane_to_border(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 4287        if self
 4288            .center
 4289            .move_to_border(&self.active_pane, direction, cx)
 4290            .unwrap()
 4291        {
 4292            cx.notify();
 4293        }
 4294    }
 4295
 4296    pub fn resize_pane(
 4297        &mut self,
 4298        axis: gpui::Axis,
 4299        amount: Pixels,
 4300        window: &mut Window,
 4301        cx: &mut Context<Self>,
 4302    ) {
 4303        let docks = self.all_docks();
 4304        let active_dock = docks
 4305            .into_iter()
 4306            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 4307
 4308        if let Some(dock) = active_dock {
 4309            let Some(panel_size) = dock.read(cx).active_panel_size(window, cx) else {
 4310                return;
 4311            };
 4312            match dock.read(cx).position() {
 4313                DockPosition::Left => self.resize_left_dock(panel_size + amount, window, cx),
 4314                DockPosition::Bottom => self.resize_bottom_dock(panel_size + amount, window, cx),
 4315                DockPosition::Right => self.resize_right_dock(panel_size + amount, window, cx),
 4316            }
 4317        } else {
 4318            self.center
 4319                .resize(&self.active_pane, axis, amount, &self.bounds, cx);
 4320        }
 4321        cx.notify();
 4322    }
 4323
 4324    pub fn reset_pane_sizes(&mut self, cx: &mut Context<Self>) {
 4325        self.center.reset_pane_sizes(cx);
 4326        cx.notify();
 4327    }
 4328
 4329    fn handle_pane_focused(
 4330        &mut self,
 4331        pane: Entity<Pane>,
 4332        window: &mut Window,
 4333        cx: &mut Context<Self>,
 4334    ) {
 4335        // This is explicitly hoisted out of the following check for pane identity as
 4336        // terminal panel panes are not registered as a center panes.
 4337        self.status_bar.update(cx, |status_bar, cx| {
 4338            status_bar.set_active_pane(&pane, window, cx);
 4339        });
 4340        if self.active_pane != pane {
 4341            self.set_active_pane(&pane, window, cx);
 4342        }
 4343
 4344        if self.last_active_center_pane.is_none() {
 4345            self.last_active_center_pane = Some(pane.downgrade());
 4346        }
 4347
 4348        self.dismiss_zoomed_items_to_reveal(None, window, cx);
 4349        if pane.read(cx).is_zoomed() {
 4350            self.zoomed = Some(pane.downgrade().into());
 4351        } else {
 4352            self.zoomed = None;
 4353        }
 4354        self.zoomed_position = None;
 4355        cx.emit(Event::ZoomChanged);
 4356        self.update_active_view_for_followers(window, cx);
 4357        pane.update(cx, |pane, _| {
 4358            pane.track_alternate_file_items();
 4359        });
 4360
 4361        cx.notify();
 4362    }
 4363
 4364    fn set_active_pane(
 4365        &mut self,
 4366        pane: &Entity<Pane>,
 4367        window: &mut Window,
 4368        cx: &mut Context<Self>,
 4369    ) {
 4370        self.active_pane = pane.clone();
 4371        self.active_item_path_changed(true, window, cx);
 4372        self.last_active_center_pane = Some(pane.downgrade());
 4373    }
 4374
 4375    fn handle_panel_focused(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4376        self.update_active_view_for_followers(window, cx);
 4377    }
 4378
 4379    fn handle_pane_event(
 4380        &mut self,
 4381        pane: &Entity<Pane>,
 4382        event: &pane::Event,
 4383        window: &mut Window,
 4384        cx: &mut Context<Self>,
 4385    ) {
 4386        let mut serialize_workspace = true;
 4387        match event {
 4388            pane::Event::AddItem { item } => {
 4389                item.added_to_pane(self, pane.clone(), window, cx);
 4390                cx.emit(Event::ItemAdded {
 4391                    item: item.boxed_clone(),
 4392                });
 4393            }
 4394            pane::Event::Split { direction, mode } => {
 4395                match mode {
 4396                    SplitMode::ClonePane => {
 4397                        self.split_and_clone(pane.clone(), *direction, window, cx)
 4398                            .detach();
 4399                    }
 4400                    SplitMode::EmptyPane => {
 4401                        self.split_pane(pane.clone(), *direction, window, cx);
 4402                    }
 4403                    SplitMode::MovePane => {
 4404                        self.split_and_move(pane.clone(), *direction, window, cx);
 4405                    }
 4406                };
 4407            }
 4408            pane::Event::JoinIntoNext => {
 4409                self.join_pane_into_next(pane.clone(), window, cx);
 4410            }
 4411            pane::Event::JoinAll => {
 4412                self.join_all_panes(window, cx);
 4413            }
 4414            pane::Event::Remove { focus_on_pane } => {
 4415                self.remove_pane(pane.clone(), focus_on_pane.clone(), window, cx);
 4416            }
 4417            pane::Event::ActivateItem {
 4418                local,
 4419                focus_changed,
 4420            } => {
 4421                window.invalidate_character_coordinates();
 4422
 4423                pane.update(cx, |pane, _| {
 4424                    pane.track_alternate_file_items();
 4425                });
 4426                if *local {
 4427                    self.unfollow_in_pane(pane, window, cx);
 4428                }
 4429                serialize_workspace = *focus_changed || pane != self.active_pane();
 4430                if pane == self.active_pane() {
 4431                    self.active_item_path_changed(*focus_changed, window, cx);
 4432                    self.update_active_view_for_followers(window, cx);
 4433                } else if *local {
 4434                    self.set_active_pane(pane, window, cx);
 4435                }
 4436            }
 4437            pane::Event::UserSavedItem { item, save_intent } => {
 4438                cx.emit(Event::UserSavedItem {
 4439                    pane: pane.downgrade(),
 4440                    item: item.boxed_clone(),
 4441                    save_intent: *save_intent,
 4442                });
 4443                serialize_workspace = false;
 4444            }
 4445            pane::Event::ChangeItemTitle => {
 4446                if *pane == self.active_pane {
 4447                    self.active_item_path_changed(false, window, cx);
 4448                }
 4449                serialize_workspace = false;
 4450            }
 4451            pane::Event::RemovedItem { item } => {
 4452                cx.emit(Event::ActiveItemChanged);
 4453                self.update_window_edited(window, cx);
 4454                if let hash_map::Entry::Occupied(entry) = self.panes_by_item.entry(item.item_id())
 4455                    && entry.get().entity_id() == pane.entity_id()
 4456                {
 4457                    entry.remove();
 4458                }
 4459                cx.emit(Event::ItemRemoved {
 4460                    item_id: item.item_id(),
 4461                });
 4462            }
 4463            pane::Event::Focus => {
 4464                window.invalidate_character_coordinates();
 4465                self.handle_pane_focused(pane.clone(), window, cx);
 4466            }
 4467            pane::Event::ZoomIn => {
 4468                if *pane == self.active_pane {
 4469                    pane.update(cx, |pane, cx| pane.set_zoomed(true, cx));
 4470                    if pane.read(cx).has_focus(window, cx) {
 4471                        self.zoomed = Some(pane.downgrade().into());
 4472                        self.zoomed_position = None;
 4473                        cx.emit(Event::ZoomChanged);
 4474                    }
 4475                    cx.notify();
 4476                }
 4477            }
 4478            pane::Event::ZoomOut => {
 4479                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 4480                if self.zoomed_position.is_none() {
 4481                    self.zoomed = None;
 4482                    cx.emit(Event::ZoomChanged);
 4483                }
 4484                cx.notify();
 4485            }
 4486            pane::Event::ItemPinned | pane::Event::ItemUnpinned => {}
 4487        }
 4488
 4489        if serialize_workspace {
 4490            self.serialize_workspace(window, cx);
 4491        }
 4492    }
 4493
 4494    pub fn unfollow_in_pane(
 4495        &mut self,
 4496        pane: &Entity<Pane>,
 4497        window: &mut Window,
 4498        cx: &mut Context<Workspace>,
 4499    ) -> Option<CollaboratorId> {
 4500        let leader_id = self.leader_for_pane(pane)?;
 4501        self.unfollow(leader_id, window, cx);
 4502        Some(leader_id)
 4503    }
 4504
 4505    pub fn split_pane(
 4506        &mut self,
 4507        pane_to_split: Entity<Pane>,
 4508        split_direction: SplitDirection,
 4509        window: &mut Window,
 4510        cx: &mut Context<Self>,
 4511    ) -> Entity<Pane> {
 4512        let new_pane = self.add_pane(window, cx);
 4513        self.center
 4514            .split(&pane_to_split, &new_pane, split_direction, cx)
 4515            .unwrap();
 4516        cx.notify();
 4517        new_pane
 4518    }
 4519
 4520    pub fn split_and_move(
 4521        &mut self,
 4522        pane: Entity<Pane>,
 4523        direction: SplitDirection,
 4524        window: &mut Window,
 4525        cx: &mut Context<Self>,
 4526    ) {
 4527        let Some(item) = pane.update(cx, |pane, cx| pane.take_active_item(window, cx)) else {
 4528            return;
 4529        };
 4530        let new_pane = self.add_pane(window, cx);
 4531        new_pane.update(cx, |pane, cx| {
 4532            pane.add_item(item, true, true, None, window, cx)
 4533        });
 4534        self.center.split(&pane, &new_pane, direction, cx).unwrap();
 4535        cx.notify();
 4536    }
 4537
 4538    pub fn split_and_clone(
 4539        &mut self,
 4540        pane: Entity<Pane>,
 4541        direction: SplitDirection,
 4542        window: &mut Window,
 4543        cx: &mut Context<Self>,
 4544    ) -> Task<Option<Entity<Pane>>> {
 4545        let Some(item) = pane.read(cx).active_item() else {
 4546            return Task::ready(None);
 4547        };
 4548        if !item.can_split(cx) {
 4549            return Task::ready(None);
 4550        }
 4551        let task = item.clone_on_split(self.database_id(), window, cx);
 4552        cx.spawn_in(window, async move |this, cx| {
 4553            if let Some(clone) = task.await {
 4554                this.update_in(cx, |this, window, cx| {
 4555                    let new_pane = this.add_pane(window, cx);
 4556                    new_pane.update(cx, |pane, cx| {
 4557                        pane.add_item(clone, true, true, None, window, cx)
 4558                    });
 4559                    this.center.split(&pane, &new_pane, direction, cx).unwrap();
 4560                    cx.notify();
 4561                    new_pane
 4562                })
 4563                .ok()
 4564            } else {
 4565                None
 4566            }
 4567        })
 4568    }
 4569
 4570    pub fn join_all_panes(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4571        let active_item = self.active_pane.read(cx).active_item();
 4572        for pane in &self.panes {
 4573            join_pane_into_active(&self.active_pane, pane, window, cx);
 4574        }
 4575        if let Some(active_item) = active_item {
 4576            self.activate_item(active_item.as_ref(), true, true, window, cx);
 4577        }
 4578        cx.notify();
 4579    }
 4580
 4581    pub fn join_pane_into_next(
 4582        &mut self,
 4583        pane: Entity<Pane>,
 4584        window: &mut Window,
 4585        cx: &mut Context<Self>,
 4586    ) {
 4587        let next_pane = self
 4588            .find_pane_in_direction(SplitDirection::Right, cx)
 4589            .or_else(|| self.find_pane_in_direction(SplitDirection::Down, cx))
 4590            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4591            .or_else(|| self.find_pane_in_direction(SplitDirection::Up, cx));
 4592        let Some(next_pane) = next_pane else {
 4593            return;
 4594        };
 4595        move_all_items(&pane, &next_pane, window, cx);
 4596        cx.notify();
 4597    }
 4598
 4599    fn remove_pane(
 4600        &mut self,
 4601        pane: Entity<Pane>,
 4602        focus_on: Option<Entity<Pane>>,
 4603        window: &mut Window,
 4604        cx: &mut Context<Self>,
 4605    ) {
 4606        if self.center.remove(&pane, cx).unwrap() {
 4607            self.force_remove_pane(&pane, &focus_on, window, cx);
 4608            self.unfollow_in_pane(&pane, window, cx);
 4609            self.last_leaders_by_pane.remove(&pane.downgrade());
 4610            for removed_item in pane.read(cx).items() {
 4611                self.panes_by_item.remove(&removed_item.item_id());
 4612            }
 4613
 4614            cx.notify();
 4615        } else {
 4616            self.active_item_path_changed(true, window, cx);
 4617        }
 4618        cx.emit(Event::PaneRemoved);
 4619    }
 4620
 4621    pub fn panes_mut(&mut self) -> &mut [Entity<Pane>] {
 4622        &mut self.panes
 4623    }
 4624
 4625    pub fn panes(&self) -> &[Entity<Pane>] {
 4626        &self.panes
 4627    }
 4628
 4629    pub fn active_pane(&self) -> &Entity<Pane> {
 4630        &self.active_pane
 4631    }
 4632
 4633    pub fn focused_pane(&self, window: &Window, cx: &App) -> Entity<Pane> {
 4634        for dock in self.all_docks() {
 4635            if dock.focus_handle(cx).contains_focused(window, cx)
 4636                && let Some(pane) = dock
 4637                    .read(cx)
 4638                    .active_panel()
 4639                    .and_then(|panel| panel.pane(cx))
 4640            {
 4641                return pane;
 4642            }
 4643        }
 4644        self.active_pane().clone()
 4645    }
 4646
 4647    pub fn adjacent_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 4648        self.find_pane_in_direction(SplitDirection::Right, cx)
 4649            .unwrap_or_else(|| {
 4650                self.split_pane(self.active_pane.clone(), SplitDirection::Right, window, cx)
 4651            })
 4652    }
 4653
 4654    pub fn pane_for(&self, handle: &dyn ItemHandle) -> Option<Entity<Pane>> {
 4655        let weak_pane = self.panes_by_item.get(&handle.item_id())?;
 4656        weak_pane.upgrade()
 4657    }
 4658
 4659    fn collaborator_left(&mut self, peer_id: PeerId, window: &mut Window, cx: &mut Context<Self>) {
 4660        self.follower_states.retain(|leader_id, state| {
 4661            if *leader_id == CollaboratorId::PeerId(peer_id) {
 4662                for item in state.items_by_leader_view_id.values() {
 4663                    item.view.set_leader_id(None, window, cx);
 4664                }
 4665                false
 4666            } else {
 4667                true
 4668            }
 4669        });
 4670        cx.notify();
 4671    }
 4672
 4673    pub fn start_following(
 4674        &mut self,
 4675        leader_id: impl Into<CollaboratorId>,
 4676        window: &mut Window,
 4677        cx: &mut Context<Self>,
 4678    ) -> Option<Task<Result<()>>> {
 4679        let leader_id = leader_id.into();
 4680        let pane = self.active_pane().clone();
 4681
 4682        self.last_leaders_by_pane
 4683            .insert(pane.downgrade(), leader_id);
 4684        self.unfollow(leader_id, window, cx);
 4685        self.unfollow_in_pane(&pane, window, cx);
 4686        self.follower_states.insert(
 4687            leader_id,
 4688            FollowerState {
 4689                center_pane: pane.clone(),
 4690                dock_pane: None,
 4691                active_view_id: None,
 4692                items_by_leader_view_id: Default::default(),
 4693            },
 4694        );
 4695        cx.notify();
 4696
 4697        match leader_id {
 4698            CollaboratorId::PeerId(leader_peer_id) => {
 4699                let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4700                let project_id = self.project.read(cx).remote_id();
 4701                let request = self.app_state.client.request(proto::Follow {
 4702                    room_id,
 4703                    project_id,
 4704                    leader_id: Some(leader_peer_id),
 4705                });
 4706
 4707                Some(cx.spawn_in(window, async move |this, cx| {
 4708                    let response = request.await?;
 4709                    this.update(cx, |this, _| {
 4710                        let state = this
 4711                            .follower_states
 4712                            .get_mut(&leader_id)
 4713                            .context("following interrupted")?;
 4714                        state.active_view_id = response
 4715                            .active_view
 4716                            .as_ref()
 4717                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4718                        anyhow::Ok(())
 4719                    })??;
 4720                    if let Some(view) = response.active_view {
 4721                        Self::add_view_from_leader(this.clone(), leader_peer_id, &view, cx).await?;
 4722                    }
 4723                    this.update_in(cx, |this, window, cx| {
 4724                        this.leader_updated(leader_id, window, cx)
 4725                    })?;
 4726                    Ok(())
 4727                }))
 4728            }
 4729            CollaboratorId::Agent => {
 4730                self.leader_updated(leader_id, window, cx)?;
 4731                Some(Task::ready(Ok(())))
 4732            }
 4733        }
 4734    }
 4735
 4736    pub fn follow_next_collaborator(
 4737        &mut self,
 4738        _: &FollowNextCollaborator,
 4739        window: &mut Window,
 4740        cx: &mut Context<Self>,
 4741    ) {
 4742        let collaborators = self.project.read(cx).collaborators();
 4743        let next_leader_id = if let Some(leader_id) = self.leader_for_pane(&self.active_pane) {
 4744            let mut collaborators = collaborators.keys().copied();
 4745            for peer_id in collaborators.by_ref() {
 4746                if CollaboratorId::PeerId(peer_id) == leader_id {
 4747                    break;
 4748                }
 4749            }
 4750            collaborators.next().map(CollaboratorId::PeerId)
 4751        } else if let Some(last_leader_id) =
 4752            self.last_leaders_by_pane.get(&self.active_pane.downgrade())
 4753        {
 4754            match last_leader_id {
 4755                CollaboratorId::PeerId(peer_id) => {
 4756                    if collaborators.contains_key(peer_id) {
 4757                        Some(*last_leader_id)
 4758                    } else {
 4759                        None
 4760                    }
 4761                }
 4762                CollaboratorId::Agent => Some(CollaboratorId::Agent),
 4763            }
 4764        } else {
 4765            None
 4766        };
 4767
 4768        let pane = self.active_pane.clone();
 4769        let Some(leader_id) = next_leader_id.or_else(|| {
 4770            Some(CollaboratorId::PeerId(
 4771                collaborators.keys().copied().next()?,
 4772            ))
 4773        }) else {
 4774            return;
 4775        };
 4776        if self.unfollow_in_pane(&pane, window, cx) == Some(leader_id) {
 4777            return;
 4778        }
 4779        if let Some(task) = self.start_following(leader_id, window, cx) {
 4780            task.detach_and_log_err(cx)
 4781        }
 4782    }
 4783
 4784    pub fn follow(
 4785        &mut self,
 4786        leader_id: impl Into<CollaboratorId>,
 4787        window: &mut Window,
 4788        cx: &mut Context<Self>,
 4789    ) {
 4790        let leader_id = leader_id.into();
 4791
 4792        if let CollaboratorId::PeerId(peer_id) = leader_id {
 4793            let Some(room) = ActiveCall::global(cx).read(cx).room() else {
 4794                return;
 4795            };
 4796            let room = room.read(cx);
 4797            let Some(remote_participant) = room.remote_participant_for_peer_id(peer_id) else {
 4798                return;
 4799            };
 4800
 4801            let project = self.project.read(cx);
 4802
 4803            let other_project_id = match remote_participant.location {
 4804                call::ParticipantLocation::External => None,
 4805                call::ParticipantLocation::UnsharedProject => None,
 4806                call::ParticipantLocation::SharedProject { project_id } => {
 4807                    if Some(project_id) == project.remote_id() {
 4808                        None
 4809                    } else {
 4810                        Some(project_id)
 4811                    }
 4812                }
 4813            };
 4814
 4815            // if they are active in another project, follow there.
 4816            if let Some(project_id) = other_project_id {
 4817                let app_state = self.app_state.clone();
 4818                crate::join_in_room_project(project_id, remote_participant.user.id, app_state, cx)
 4819                    .detach_and_log_err(cx);
 4820            }
 4821        }
 4822
 4823        // if you're already following, find the right pane and focus it.
 4824        if let Some(follower_state) = self.follower_states.get(&leader_id) {
 4825            window.focus(&follower_state.pane().focus_handle(cx), cx);
 4826
 4827            return;
 4828        }
 4829
 4830        // Otherwise, follow.
 4831        if let Some(task) = self.start_following(leader_id, window, cx) {
 4832            task.detach_and_log_err(cx)
 4833        }
 4834    }
 4835
 4836    pub fn unfollow(
 4837        &mut self,
 4838        leader_id: impl Into<CollaboratorId>,
 4839        window: &mut Window,
 4840        cx: &mut Context<Self>,
 4841    ) -> Option<()> {
 4842        cx.notify();
 4843
 4844        let leader_id = leader_id.into();
 4845        let state = self.follower_states.remove(&leader_id)?;
 4846        for (_, item) in state.items_by_leader_view_id {
 4847            item.view.set_leader_id(None, window, cx);
 4848        }
 4849
 4850        if let CollaboratorId::PeerId(leader_peer_id) = leader_id {
 4851            let project_id = self.project.read(cx).remote_id();
 4852            let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4853            self.app_state
 4854                .client
 4855                .send(proto::Unfollow {
 4856                    room_id,
 4857                    project_id,
 4858                    leader_id: Some(leader_peer_id),
 4859                })
 4860                .log_err();
 4861        }
 4862
 4863        Some(())
 4864    }
 4865
 4866    pub fn is_being_followed(&self, id: impl Into<CollaboratorId>) -> bool {
 4867        self.follower_states.contains_key(&id.into())
 4868    }
 4869
 4870    fn active_item_path_changed(
 4871        &mut self,
 4872        focus_changed: bool,
 4873        window: &mut Window,
 4874        cx: &mut Context<Self>,
 4875    ) {
 4876        cx.emit(Event::ActiveItemChanged);
 4877        let active_entry = self.active_project_path(cx);
 4878        self.project.update(cx, |project, cx| {
 4879            project.set_active_path(active_entry.clone(), cx)
 4880        });
 4881
 4882        if focus_changed && let Some(project_path) = &active_entry {
 4883            let git_store_entity = self.project.read(cx).git_store().clone();
 4884            git_store_entity.update(cx, |git_store, cx| {
 4885                git_store.set_active_repo_for_path(project_path, cx);
 4886            });
 4887        }
 4888
 4889        self.update_window_title(window, cx);
 4890    }
 4891
 4892    fn update_window_title(&mut self, window: &mut Window, cx: &mut App) {
 4893        let project = self.project().read(cx);
 4894        let mut title = String::new();
 4895
 4896        for (i, worktree) in project.visible_worktrees(cx).enumerate() {
 4897            let name = {
 4898                let settings_location = SettingsLocation {
 4899                    worktree_id: worktree.read(cx).id(),
 4900                    path: RelPath::empty(),
 4901                };
 4902
 4903                let settings = WorktreeSettings::get(Some(settings_location), cx);
 4904                match &settings.project_name {
 4905                    Some(name) => name.as_str(),
 4906                    None => worktree.read(cx).root_name_str(),
 4907                }
 4908            };
 4909            if i > 0 {
 4910                title.push_str(", ");
 4911            }
 4912            title.push_str(name);
 4913        }
 4914
 4915        if title.is_empty() {
 4916            title = "empty project".to_string();
 4917        }
 4918
 4919        if let Some(path) = self.active_item(cx).and_then(|item| item.project_path(cx)) {
 4920            let filename = path.path.file_name().or_else(|| {
 4921                Some(
 4922                    project
 4923                        .worktree_for_id(path.worktree_id, cx)?
 4924                        .read(cx)
 4925                        .root_name_str(),
 4926                )
 4927            });
 4928
 4929            if let Some(filename) = filename {
 4930                title.push_str("");
 4931                title.push_str(filename.as_ref());
 4932            }
 4933        }
 4934
 4935        if project.is_via_collab() {
 4936            title.push_str("");
 4937        } else if project.is_shared() {
 4938            title.push_str("");
 4939        }
 4940
 4941        if let Some(last_title) = self.last_window_title.as_ref()
 4942            && &title == last_title
 4943        {
 4944            return;
 4945        }
 4946        window.set_window_title(&title);
 4947        SystemWindowTabController::update_tab_title(
 4948            cx,
 4949            window.window_handle().window_id(),
 4950            SharedString::from(&title),
 4951        );
 4952        self.last_window_title = Some(title);
 4953    }
 4954
 4955    fn update_window_edited(&mut self, window: &mut Window, cx: &mut App) {
 4956        let is_edited = !self.project.read(cx).is_disconnected(cx) && !self.dirty_items.is_empty();
 4957        if is_edited != self.window_edited {
 4958            self.window_edited = is_edited;
 4959            window.set_window_edited(self.window_edited)
 4960        }
 4961    }
 4962
 4963    fn update_item_dirty_state(
 4964        &mut self,
 4965        item: &dyn ItemHandle,
 4966        window: &mut Window,
 4967        cx: &mut App,
 4968    ) {
 4969        let is_dirty = item.is_dirty(cx);
 4970        let item_id = item.item_id();
 4971        let was_dirty = self.dirty_items.contains_key(&item_id);
 4972        if is_dirty == was_dirty {
 4973            return;
 4974        }
 4975        if was_dirty {
 4976            self.dirty_items.remove(&item_id);
 4977            self.update_window_edited(window, cx);
 4978            return;
 4979        }
 4980        if let Some(window_handle) = window.window_handle().downcast::<Self>() {
 4981            let s = item.on_release(
 4982                cx,
 4983                Box::new(move |cx| {
 4984                    window_handle
 4985                        .update(cx, |this, window, cx| {
 4986                            this.dirty_items.remove(&item_id);
 4987                            this.update_window_edited(window, cx)
 4988                        })
 4989                        .ok();
 4990                }),
 4991            );
 4992            self.dirty_items.insert(item_id, s);
 4993            self.update_window_edited(window, cx);
 4994        }
 4995    }
 4996
 4997    fn render_notifications(&self, _window: &mut Window, _cx: &mut Context<Self>) -> Option<Div> {
 4998        if self.notifications.is_empty() {
 4999            None
 5000        } else {
 5001            Some(
 5002                div()
 5003                    .absolute()
 5004                    .right_3()
 5005                    .bottom_3()
 5006                    .w_112()
 5007                    .h_full()
 5008                    .flex()
 5009                    .flex_col()
 5010                    .justify_end()
 5011                    .gap_2()
 5012                    .children(
 5013                        self.notifications
 5014                            .iter()
 5015                            .map(|(_, notification)| notification.clone().into_any()),
 5016                    ),
 5017            )
 5018        }
 5019    }
 5020
 5021    // RPC handlers
 5022
 5023    fn active_view_for_follower(
 5024        &self,
 5025        follower_project_id: Option<u64>,
 5026        window: &mut Window,
 5027        cx: &mut Context<Self>,
 5028    ) -> Option<proto::View> {
 5029        let (item, panel_id) = self.active_item_for_followers(window, cx);
 5030        let item = item?;
 5031        let leader_id = self
 5032            .pane_for(&*item)
 5033            .and_then(|pane| self.leader_for_pane(&pane));
 5034        let leader_peer_id = match leader_id {
 5035            Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 5036            Some(CollaboratorId::Agent) | None => None,
 5037        };
 5038
 5039        let item_handle = item.to_followable_item_handle(cx)?;
 5040        let id = item_handle.remote_id(&self.app_state.client, window, cx)?;
 5041        let variant = item_handle.to_state_proto(window, cx)?;
 5042
 5043        if item_handle.is_project_item(window, cx)
 5044            && (follower_project_id.is_none()
 5045                || follower_project_id != self.project.read(cx).remote_id())
 5046        {
 5047            return None;
 5048        }
 5049
 5050        Some(proto::View {
 5051            id: id.to_proto(),
 5052            leader_id: leader_peer_id,
 5053            variant: Some(variant),
 5054            panel_id: panel_id.map(|id| id as i32),
 5055        })
 5056    }
 5057
 5058    fn handle_follow(
 5059        &mut self,
 5060        follower_project_id: Option<u64>,
 5061        window: &mut Window,
 5062        cx: &mut Context<Self>,
 5063    ) -> proto::FollowResponse {
 5064        let active_view = self.active_view_for_follower(follower_project_id, window, cx);
 5065
 5066        cx.notify();
 5067        proto::FollowResponse {
 5068            views: active_view.iter().cloned().collect(),
 5069            active_view,
 5070        }
 5071    }
 5072
 5073    fn handle_update_followers(
 5074        &mut self,
 5075        leader_id: PeerId,
 5076        message: proto::UpdateFollowers,
 5077        _window: &mut Window,
 5078        _cx: &mut Context<Self>,
 5079    ) {
 5080        self.leader_updates_tx
 5081            .unbounded_send((leader_id, message))
 5082            .ok();
 5083    }
 5084
 5085    async fn process_leader_update(
 5086        this: &WeakEntity<Self>,
 5087        leader_id: PeerId,
 5088        update: proto::UpdateFollowers,
 5089        cx: &mut AsyncWindowContext,
 5090    ) -> Result<()> {
 5091        match update.variant.context("invalid update")? {
 5092            proto::update_followers::Variant::CreateView(view) => {
 5093                let view_id = ViewId::from_proto(view.id.clone().context("invalid view id")?)?;
 5094                let should_add_view = this.update(cx, |this, _| {
 5095                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 5096                        anyhow::Ok(!state.items_by_leader_view_id.contains_key(&view_id))
 5097                    } else {
 5098                        anyhow::Ok(false)
 5099                    }
 5100                })??;
 5101
 5102                if should_add_view {
 5103                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 5104                }
 5105            }
 5106            proto::update_followers::Variant::UpdateActiveView(update_active_view) => {
 5107                let should_add_view = this.update(cx, |this, _| {
 5108                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 5109                        state.active_view_id = update_active_view
 5110                            .view
 5111                            .as_ref()
 5112                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 5113
 5114                        if state.active_view_id.is_some_and(|view_id| {
 5115                            !state.items_by_leader_view_id.contains_key(&view_id)
 5116                        }) {
 5117                            anyhow::Ok(true)
 5118                        } else {
 5119                            anyhow::Ok(false)
 5120                        }
 5121                    } else {
 5122                        anyhow::Ok(false)
 5123                    }
 5124                })??;
 5125
 5126                if should_add_view && let Some(view) = update_active_view.view {
 5127                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 5128                }
 5129            }
 5130            proto::update_followers::Variant::UpdateView(update_view) => {
 5131                let variant = update_view.variant.context("missing update view variant")?;
 5132                let id = update_view.id.context("missing update view id")?;
 5133                let mut tasks = Vec::new();
 5134                this.update_in(cx, |this, window, cx| {
 5135                    let project = this.project.clone();
 5136                    if let Some(state) = this.follower_states.get(&leader_id.into()) {
 5137                        let view_id = ViewId::from_proto(id.clone())?;
 5138                        if let Some(item) = state.items_by_leader_view_id.get(&view_id) {
 5139                            tasks.push(item.view.apply_update_proto(
 5140                                &project,
 5141                                variant.clone(),
 5142                                window,
 5143                                cx,
 5144                            ));
 5145                        }
 5146                    }
 5147                    anyhow::Ok(())
 5148                })??;
 5149                try_join_all(tasks).await.log_err();
 5150            }
 5151        }
 5152        this.update_in(cx, |this, window, cx| {
 5153            this.leader_updated(leader_id, window, cx)
 5154        })?;
 5155        Ok(())
 5156    }
 5157
 5158    async fn add_view_from_leader(
 5159        this: WeakEntity<Self>,
 5160        leader_id: PeerId,
 5161        view: &proto::View,
 5162        cx: &mut AsyncWindowContext,
 5163    ) -> Result<()> {
 5164        let this = this.upgrade().context("workspace dropped")?;
 5165
 5166        let Some(id) = view.id.clone() else {
 5167            anyhow::bail!("no id for view");
 5168        };
 5169        let id = ViewId::from_proto(id)?;
 5170        let panel_id = view.panel_id.and_then(proto::PanelId::from_i32);
 5171
 5172        let pane = this.update(cx, |this, _cx| {
 5173            let state = this
 5174                .follower_states
 5175                .get(&leader_id.into())
 5176                .context("stopped following")?;
 5177            anyhow::Ok(state.pane().clone())
 5178        })?;
 5179        let existing_item = pane.update_in(cx, |pane, window, cx| {
 5180            let client = this.read(cx).client().clone();
 5181            pane.items().find_map(|item| {
 5182                let item = item.to_followable_item_handle(cx)?;
 5183                if item.remote_id(&client, window, cx) == Some(id) {
 5184                    Some(item)
 5185                } else {
 5186                    None
 5187                }
 5188            })
 5189        })?;
 5190        let item = if let Some(existing_item) = existing_item {
 5191            existing_item
 5192        } else {
 5193            let variant = view.variant.clone();
 5194            anyhow::ensure!(variant.is_some(), "missing view variant");
 5195
 5196            let task = cx.update(|window, cx| {
 5197                FollowableViewRegistry::from_state_proto(this.clone(), id, variant, window, cx)
 5198            })?;
 5199
 5200            let Some(task) = task else {
 5201                anyhow::bail!(
 5202                    "failed to construct view from leader (maybe from a different version of zed?)"
 5203                );
 5204            };
 5205
 5206            let mut new_item = task.await?;
 5207            pane.update_in(cx, |pane, window, cx| {
 5208                let mut item_to_remove = None;
 5209                for (ix, item) in pane.items().enumerate() {
 5210                    if let Some(item) = item.to_followable_item_handle(cx) {
 5211                        match new_item.dedup(item.as_ref(), window, cx) {
 5212                            Some(item::Dedup::KeepExisting) => {
 5213                                new_item =
 5214                                    item.boxed_clone().to_followable_item_handle(cx).unwrap();
 5215                                break;
 5216                            }
 5217                            Some(item::Dedup::ReplaceExisting) => {
 5218                                item_to_remove = Some((ix, item.item_id()));
 5219                                break;
 5220                            }
 5221                            None => {}
 5222                        }
 5223                    }
 5224                }
 5225
 5226                if let Some((ix, id)) = item_to_remove {
 5227                    pane.remove_item(id, false, false, window, cx);
 5228                    pane.add_item(new_item.boxed_clone(), false, false, Some(ix), window, cx);
 5229                }
 5230            })?;
 5231
 5232            new_item
 5233        };
 5234
 5235        this.update_in(cx, |this, window, cx| {
 5236            let state = this.follower_states.get_mut(&leader_id.into())?;
 5237            item.set_leader_id(Some(leader_id.into()), window, cx);
 5238            state.items_by_leader_view_id.insert(
 5239                id,
 5240                FollowerView {
 5241                    view: item,
 5242                    location: panel_id,
 5243                },
 5244            );
 5245
 5246            Some(())
 5247        })
 5248        .context("no follower state")?;
 5249
 5250        Ok(())
 5251    }
 5252
 5253    fn handle_agent_location_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5254        let Some(follower_state) = self.follower_states.get_mut(&CollaboratorId::Agent) else {
 5255            return;
 5256        };
 5257
 5258        if let Some(agent_location) = self.project.read(cx).agent_location() {
 5259            let buffer_entity_id = agent_location.buffer.entity_id();
 5260            let view_id = ViewId {
 5261                creator: CollaboratorId::Agent,
 5262                id: buffer_entity_id.as_u64(),
 5263            };
 5264            follower_state.active_view_id = Some(view_id);
 5265
 5266            let item = match follower_state.items_by_leader_view_id.entry(view_id) {
 5267                hash_map::Entry::Occupied(entry) => Some(entry.into_mut()),
 5268                hash_map::Entry::Vacant(entry) => {
 5269                    let existing_view =
 5270                        follower_state
 5271                            .center_pane
 5272                            .read(cx)
 5273                            .items()
 5274                            .find_map(|item| {
 5275                                let item = item.to_followable_item_handle(cx)?;
 5276                                if item.buffer_kind(cx) == ItemBufferKind::Singleton
 5277                                    && item.project_item_model_ids(cx).as_slice()
 5278                                        == [buffer_entity_id]
 5279                                {
 5280                                    Some(item)
 5281                                } else {
 5282                                    None
 5283                                }
 5284                            });
 5285                    let view = existing_view.or_else(|| {
 5286                        agent_location.buffer.upgrade().and_then(|buffer| {
 5287                            cx.update_default_global(|registry: &mut ProjectItemRegistry, cx| {
 5288                                registry.build_item(buffer, self.project.clone(), None, window, cx)
 5289                            })?
 5290                            .to_followable_item_handle(cx)
 5291                        })
 5292                    });
 5293
 5294                    view.map(|view| {
 5295                        entry.insert(FollowerView {
 5296                            view,
 5297                            location: None,
 5298                        })
 5299                    })
 5300                }
 5301            };
 5302
 5303            if let Some(item) = item {
 5304                item.view
 5305                    .set_leader_id(Some(CollaboratorId::Agent), window, cx);
 5306                item.view
 5307                    .update_agent_location(agent_location.position, window, cx);
 5308            }
 5309        } else {
 5310            follower_state.active_view_id = None;
 5311        }
 5312
 5313        self.leader_updated(CollaboratorId::Agent, window, cx);
 5314    }
 5315
 5316    pub fn update_active_view_for_followers(&mut self, window: &mut Window, cx: &mut App) {
 5317        let mut is_project_item = true;
 5318        let mut update = proto::UpdateActiveView::default();
 5319        if window.is_window_active() {
 5320            let (active_item, panel_id) = self.active_item_for_followers(window, cx);
 5321
 5322            if let Some(item) = active_item
 5323                && item.item_focus_handle(cx).contains_focused(window, cx)
 5324            {
 5325                let leader_id = self
 5326                    .pane_for(&*item)
 5327                    .and_then(|pane| self.leader_for_pane(&pane));
 5328                let leader_peer_id = match leader_id {
 5329                    Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 5330                    Some(CollaboratorId::Agent) | None => None,
 5331                };
 5332
 5333                if let Some(item) = item.to_followable_item_handle(cx) {
 5334                    let id = item
 5335                        .remote_id(&self.app_state.client, window, cx)
 5336                        .map(|id| id.to_proto());
 5337
 5338                    if let Some(id) = id
 5339                        && let Some(variant) = item.to_state_proto(window, cx)
 5340                    {
 5341                        let view = Some(proto::View {
 5342                            id,
 5343                            leader_id: leader_peer_id,
 5344                            variant: Some(variant),
 5345                            panel_id: panel_id.map(|id| id as i32),
 5346                        });
 5347
 5348                        is_project_item = item.is_project_item(window, cx);
 5349                        update = proto::UpdateActiveView { view };
 5350                    };
 5351                }
 5352            }
 5353        }
 5354
 5355        let active_view_id = update.view.as_ref().and_then(|view| view.id.as_ref());
 5356        if active_view_id != self.last_active_view_id.as_ref() {
 5357            self.last_active_view_id = active_view_id.cloned();
 5358            self.update_followers(
 5359                is_project_item,
 5360                proto::update_followers::Variant::UpdateActiveView(update),
 5361                window,
 5362                cx,
 5363            );
 5364        }
 5365    }
 5366
 5367    fn active_item_for_followers(
 5368        &self,
 5369        window: &mut Window,
 5370        cx: &mut App,
 5371    ) -> (Option<Box<dyn ItemHandle>>, Option<proto::PanelId>) {
 5372        let mut active_item = None;
 5373        let mut panel_id = None;
 5374        for dock in self.all_docks() {
 5375            if dock.focus_handle(cx).contains_focused(window, cx)
 5376                && let Some(panel) = dock.read(cx).active_panel()
 5377                && let Some(pane) = panel.pane(cx)
 5378                && let Some(item) = pane.read(cx).active_item()
 5379            {
 5380                active_item = Some(item);
 5381                panel_id = panel.remote_id();
 5382                break;
 5383            }
 5384        }
 5385
 5386        if active_item.is_none() {
 5387            active_item = self.active_pane().read(cx).active_item();
 5388        }
 5389        (active_item, panel_id)
 5390    }
 5391
 5392    fn update_followers(
 5393        &self,
 5394        project_only: bool,
 5395        update: proto::update_followers::Variant,
 5396        _: &mut Window,
 5397        cx: &mut App,
 5398    ) -> Option<()> {
 5399        // If this update only applies to for followers in the current project,
 5400        // then skip it unless this project is shared. If it applies to all
 5401        // followers, regardless of project, then set `project_id` to none,
 5402        // indicating that it goes to all followers.
 5403        let project_id = if project_only {
 5404            Some(self.project.read(cx).remote_id()?)
 5405        } else {
 5406            None
 5407        };
 5408        self.app_state().workspace_store.update(cx, |store, cx| {
 5409            store.update_followers(project_id, update, cx)
 5410        })
 5411    }
 5412
 5413    pub fn leader_for_pane(&self, pane: &Entity<Pane>) -> Option<CollaboratorId> {
 5414        self.follower_states.iter().find_map(|(leader_id, state)| {
 5415            if state.center_pane == *pane || state.dock_pane.as_ref() == Some(pane) {
 5416                Some(*leader_id)
 5417            } else {
 5418                None
 5419            }
 5420        })
 5421    }
 5422
 5423    fn leader_updated(
 5424        &mut self,
 5425        leader_id: impl Into<CollaboratorId>,
 5426        window: &mut Window,
 5427        cx: &mut Context<Self>,
 5428    ) -> Option<Box<dyn ItemHandle>> {
 5429        cx.notify();
 5430
 5431        let leader_id = leader_id.into();
 5432        let (panel_id, item) = match leader_id {
 5433            CollaboratorId::PeerId(peer_id) => self.active_item_for_peer(peer_id, window, cx)?,
 5434            CollaboratorId::Agent => (None, self.active_item_for_agent()?),
 5435        };
 5436
 5437        let state = self.follower_states.get(&leader_id)?;
 5438        let mut transfer_focus = state.center_pane.read(cx).has_focus(window, cx);
 5439        let pane;
 5440        if let Some(panel_id) = panel_id {
 5441            pane = self
 5442                .activate_panel_for_proto_id(panel_id, window, cx)?
 5443                .pane(cx)?;
 5444            let state = self.follower_states.get_mut(&leader_id)?;
 5445            state.dock_pane = Some(pane.clone());
 5446        } else {
 5447            pane = state.center_pane.clone();
 5448            let state = self.follower_states.get_mut(&leader_id)?;
 5449            if let Some(dock_pane) = state.dock_pane.take() {
 5450                transfer_focus |= dock_pane.focus_handle(cx).contains_focused(window, cx);
 5451            }
 5452        }
 5453
 5454        pane.update(cx, |pane, cx| {
 5455            let focus_active_item = pane.has_focus(window, cx) || transfer_focus;
 5456            if let Some(index) = pane.index_for_item(item.as_ref()) {
 5457                pane.activate_item(index, false, false, window, cx);
 5458            } else {
 5459                pane.add_item(item.boxed_clone(), false, false, None, window, cx)
 5460            }
 5461
 5462            if focus_active_item {
 5463                pane.focus_active_item(window, cx)
 5464            }
 5465        });
 5466
 5467        Some(item)
 5468    }
 5469
 5470    fn active_item_for_agent(&self) -> Option<Box<dyn ItemHandle>> {
 5471        let state = self.follower_states.get(&CollaboratorId::Agent)?;
 5472        let active_view_id = state.active_view_id?;
 5473        Some(
 5474            state
 5475                .items_by_leader_view_id
 5476                .get(&active_view_id)?
 5477                .view
 5478                .boxed_clone(),
 5479        )
 5480    }
 5481
 5482    fn active_item_for_peer(
 5483        &self,
 5484        peer_id: PeerId,
 5485        window: &mut Window,
 5486        cx: &mut Context<Self>,
 5487    ) -> Option<(Option<PanelId>, Box<dyn ItemHandle>)> {
 5488        let call = self.active_call()?;
 5489        let room = call.read(cx).room()?.read(cx);
 5490        let participant = room.remote_participant_for_peer_id(peer_id)?;
 5491        let leader_in_this_app;
 5492        let leader_in_this_project;
 5493        match participant.location {
 5494            call::ParticipantLocation::SharedProject { project_id } => {
 5495                leader_in_this_app = true;
 5496                leader_in_this_project = Some(project_id) == self.project.read(cx).remote_id();
 5497            }
 5498            call::ParticipantLocation::UnsharedProject => {
 5499                leader_in_this_app = true;
 5500                leader_in_this_project = false;
 5501            }
 5502            call::ParticipantLocation::External => {
 5503                leader_in_this_app = false;
 5504                leader_in_this_project = false;
 5505            }
 5506        };
 5507        let state = self.follower_states.get(&peer_id.into())?;
 5508        let mut item_to_activate = None;
 5509        if let (Some(active_view_id), true) = (state.active_view_id, leader_in_this_app) {
 5510            if let Some(item) = state.items_by_leader_view_id.get(&active_view_id)
 5511                && (leader_in_this_project || !item.view.is_project_item(window, cx))
 5512            {
 5513                item_to_activate = Some((item.location, item.view.boxed_clone()));
 5514            }
 5515        } else if let Some(shared_screen) =
 5516            self.shared_screen_for_peer(peer_id, &state.center_pane, window, cx)
 5517        {
 5518            item_to_activate = Some((None, Box::new(shared_screen)));
 5519        }
 5520        item_to_activate
 5521    }
 5522
 5523    fn shared_screen_for_peer(
 5524        &self,
 5525        peer_id: PeerId,
 5526        pane: &Entity<Pane>,
 5527        window: &mut Window,
 5528        cx: &mut App,
 5529    ) -> Option<Entity<SharedScreen>> {
 5530        let call = self.active_call()?;
 5531        let room = call.read(cx).room()?.clone();
 5532        let participant = room.read(cx).remote_participant_for_peer_id(peer_id)?;
 5533        let track = participant.video_tracks.values().next()?.clone();
 5534        let user = participant.user.clone();
 5535
 5536        for item in pane.read(cx).items_of_type::<SharedScreen>() {
 5537            if item.read(cx).peer_id == peer_id {
 5538                return Some(item);
 5539            }
 5540        }
 5541
 5542        Some(cx.new(|cx| SharedScreen::new(track, peer_id, user.clone(), room.clone(), window, cx)))
 5543    }
 5544
 5545    pub fn on_window_activation_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5546        if window.is_window_active() {
 5547            self.update_active_view_for_followers(window, cx);
 5548
 5549            if let Some(database_id) = self.database_id {
 5550                cx.background_spawn(persistence::DB.update_timestamp(database_id))
 5551                    .detach();
 5552            }
 5553        } else {
 5554            for pane in &self.panes {
 5555                pane.update(cx, |pane, cx| {
 5556                    if let Some(item) = pane.active_item() {
 5557                        item.workspace_deactivated(window, cx);
 5558                    }
 5559                    for item in pane.items() {
 5560                        if matches!(
 5561                            item.workspace_settings(cx).autosave,
 5562                            AutosaveSetting::OnWindowChange | AutosaveSetting::OnFocusChange
 5563                        ) {
 5564                            Pane::autosave_item(item.as_ref(), self.project.clone(), window, cx)
 5565                                .detach_and_log_err(cx);
 5566                        }
 5567                    }
 5568                });
 5569            }
 5570        }
 5571    }
 5572
 5573    pub fn active_call(&self) -> Option<&Entity<ActiveCall>> {
 5574        self.active_call.as_ref().map(|(call, _)| call)
 5575    }
 5576
 5577    fn on_active_call_event(
 5578        &mut self,
 5579        _: &Entity<ActiveCall>,
 5580        event: &call::room::Event,
 5581        window: &mut Window,
 5582        cx: &mut Context<Self>,
 5583    ) {
 5584        match event {
 5585            call::room::Event::ParticipantLocationChanged { participant_id }
 5586            | call::room::Event::RemoteVideoTracksChanged { participant_id } => {
 5587                self.leader_updated(participant_id, window, cx);
 5588            }
 5589            _ => {}
 5590        }
 5591    }
 5592
 5593    pub fn database_id(&self) -> Option<WorkspaceId> {
 5594        self.database_id
 5595    }
 5596
 5597    pub fn session_id(&self) -> Option<String> {
 5598        self.session_id.clone()
 5599    }
 5600
 5601    pub fn root_paths(&self, cx: &App) -> Vec<Arc<Path>> {
 5602        let project = self.project().read(cx);
 5603        project
 5604            .visible_worktrees(cx)
 5605            .map(|worktree| worktree.read(cx).abs_path())
 5606            .collect::<Vec<_>>()
 5607    }
 5608
 5609    fn remove_panes(&mut self, member: Member, window: &mut Window, cx: &mut Context<Workspace>) {
 5610        match member {
 5611            Member::Axis(PaneAxis { members, .. }) => {
 5612                for child in members.iter() {
 5613                    self.remove_panes(child.clone(), window, cx)
 5614                }
 5615            }
 5616            Member::Pane(pane) => {
 5617                self.force_remove_pane(&pane, &None, window, cx);
 5618            }
 5619        }
 5620    }
 5621
 5622    fn remove_from_session(&mut self, window: &mut Window, cx: &mut App) -> Task<()> {
 5623        self.session_id.take();
 5624        self.serialize_workspace_internal(window, cx)
 5625    }
 5626
 5627    fn force_remove_pane(
 5628        &mut self,
 5629        pane: &Entity<Pane>,
 5630        focus_on: &Option<Entity<Pane>>,
 5631        window: &mut Window,
 5632        cx: &mut Context<Workspace>,
 5633    ) {
 5634        self.panes.retain(|p| p != pane);
 5635        if let Some(focus_on) = focus_on {
 5636            focus_on.update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx));
 5637        } else if self.active_pane() == pane {
 5638            self.panes
 5639                .last()
 5640                .unwrap()
 5641                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx));
 5642        }
 5643        if self.last_active_center_pane == Some(pane.downgrade()) {
 5644            self.last_active_center_pane = None;
 5645        }
 5646        cx.notify();
 5647    }
 5648
 5649    fn serialize_workspace(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5650        if self._schedule_serialize_workspace.is_none() {
 5651            self._schedule_serialize_workspace =
 5652                Some(cx.spawn_in(window, async move |this, cx| {
 5653                    cx.background_executor()
 5654                        .timer(SERIALIZATION_THROTTLE_TIME)
 5655                        .await;
 5656                    this.update_in(cx, |this, window, cx| {
 5657                        this.serialize_workspace_internal(window, cx).detach();
 5658                        this._schedule_serialize_workspace.take();
 5659                    })
 5660                    .log_err();
 5661                }));
 5662        }
 5663    }
 5664
 5665    fn serialize_workspace_internal(&self, window: &mut Window, cx: &mut App) -> Task<()> {
 5666        let Some(database_id) = self.database_id() else {
 5667            return Task::ready(());
 5668        };
 5669
 5670        fn serialize_pane_handle(
 5671            pane_handle: &Entity<Pane>,
 5672            window: &mut Window,
 5673            cx: &mut App,
 5674        ) -> SerializedPane {
 5675            let (items, active, pinned_count) = {
 5676                let pane = pane_handle.read(cx);
 5677                let active_item_id = pane.active_item().map(|item| item.item_id());
 5678                (
 5679                    pane.items()
 5680                        .filter_map(|handle| {
 5681                            let handle = handle.to_serializable_item_handle(cx)?;
 5682
 5683                            Some(SerializedItem {
 5684                                kind: Arc::from(handle.serialized_item_kind()),
 5685                                item_id: handle.item_id().as_u64(),
 5686                                active: Some(handle.item_id()) == active_item_id,
 5687                                preview: pane.is_active_preview_item(handle.item_id()),
 5688                            })
 5689                        })
 5690                        .collect::<Vec<_>>(),
 5691                    pane.has_focus(window, cx),
 5692                    pane.pinned_count(),
 5693                )
 5694            };
 5695
 5696            SerializedPane::new(items, active, pinned_count)
 5697        }
 5698
 5699        fn build_serialized_pane_group(
 5700            pane_group: &Member,
 5701            window: &mut Window,
 5702            cx: &mut App,
 5703        ) -> SerializedPaneGroup {
 5704            match pane_group {
 5705                Member::Axis(PaneAxis {
 5706                    axis,
 5707                    members,
 5708                    flexes,
 5709                    bounding_boxes: _,
 5710                }) => SerializedPaneGroup::Group {
 5711                    axis: SerializedAxis(*axis),
 5712                    children: members
 5713                        .iter()
 5714                        .map(|member| build_serialized_pane_group(member, window, cx))
 5715                        .collect::<Vec<_>>(),
 5716                    flexes: Some(flexes.lock().clone()),
 5717                },
 5718                Member::Pane(pane_handle) => {
 5719                    SerializedPaneGroup::Pane(serialize_pane_handle(pane_handle, window, cx))
 5720                }
 5721            }
 5722        }
 5723
 5724        fn build_serialized_docks(
 5725            this: &Workspace,
 5726            window: &mut Window,
 5727            cx: &mut App,
 5728        ) -> DockStructure {
 5729            let left_dock = this.left_dock.read(cx);
 5730            let left_visible = left_dock.is_open();
 5731            let left_active_panel = left_dock
 5732                .active_panel()
 5733                .map(|panel| panel.persistent_name().to_string());
 5734            let left_dock_zoom = left_dock
 5735                .active_panel()
 5736                .map(|panel| panel.is_zoomed(window, cx))
 5737                .unwrap_or(false);
 5738
 5739            let right_dock = this.right_dock.read(cx);
 5740            let right_visible = right_dock.is_open();
 5741            let right_active_panel = right_dock
 5742                .active_panel()
 5743                .map(|panel| panel.persistent_name().to_string());
 5744            let right_dock_zoom = right_dock
 5745                .active_panel()
 5746                .map(|panel| panel.is_zoomed(window, cx))
 5747                .unwrap_or(false);
 5748
 5749            let bottom_dock = this.bottom_dock.read(cx);
 5750            let bottom_visible = bottom_dock.is_open();
 5751            let bottom_active_panel = bottom_dock
 5752                .active_panel()
 5753                .map(|panel| panel.persistent_name().to_string());
 5754            let bottom_dock_zoom = bottom_dock
 5755                .active_panel()
 5756                .map(|panel| panel.is_zoomed(window, cx))
 5757                .unwrap_or(false);
 5758
 5759            DockStructure {
 5760                left: DockData {
 5761                    visible: left_visible,
 5762                    active_panel: left_active_panel,
 5763                    zoom: left_dock_zoom,
 5764                },
 5765                right: DockData {
 5766                    visible: right_visible,
 5767                    active_panel: right_active_panel,
 5768                    zoom: right_dock_zoom,
 5769                },
 5770                bottom: DockData {
 5771                    visible: bottom_visible,
 5772                    active_panel: bottom_active_panel,
 5773                    zoom: bottom_dock_zoom,
 5774                },
 5775            }
 5776        }
 5777
 5778        match self.serialize_workspace_location(cx) {
 5779            WorkspaceLocation::Location(location, paths) => {
 5780                let breakpoints = self.project.update(cx, |project, cx| {
 5781                    project
 5782                        .breakpoint_store()
 5783                        .read(cx)
 5784                        .all_source_breakpoints(cx)
 5785                });
 5786                let user_toolchains = self
 5787                    .project
 5788                    .read(cx)
 5789                    .user_toolchains(cx)
 5790                    .unwrap_or_default();
 5791
 5792                let center_group = build_serialized_pane_group(&self.center.root, window, cx);
 5793                let docks = build_serialized_docks(self, window, cx);
 5794                let window_bounds = Some(SerializedWindowBounds(window.window_bounds()));
 5795
 5796                let serialized_workspace = SerializedWorkspace {
 5797                    id: database_id,
 5798                    location,
 5799                    paths,
 5800                    center_group,
 5801                    window_bounds,
 5802                    display: Default::default(),
 5803                    docks,
 5804                    centered_layout: self.centered_layout,
 5805                    session_id: self.session_id.clone(),
 5806                    breakpoints,
 5807                    window_id: Some(window.window_handle().window_id().as_u64()),
 5808                    user_toolchains,
 5809                };
 5810
 5811                window.spawn(cx, async move |_| {
 5812                    persistence::DB.save_workspace(serialized_workspace).await;
 5813                })
 5814            }
 5815            WorkspaceLocation::DetachFromSession => {
 5816                let window_bounds = SerializedWindowBounds(window.window_bounds());
 5817                let display = window.display(cx).and_then(|d| d.uuid().ok());
 5818                window.spawn(cx, async move |_| {
 5819                    persistence::DB
 5820                        .set_window_open_status(
 5821                            database_id,
 5822                            window_bounds,
 5823                            display.unwrap_or_default(),
 5824                        )
 5825                        .await
 5826                        .log_err();
 5827                    persistence::DB
 5828                        .set_session_id(database_id, None)
 5829                        .await
 5830                        .log_err();
 5831                })
 5832            }
 5833            WorkspaceLocation::None => Task::ready(()),
 5834        }
 5835    }
 5836
 5837    fn serialize_workspace_location(&self, cx: &App) -> WorkspaceLocation {
 5838        let paths = PathList::new(&self.root_paths(cx));
 5839        if let Some(connection) = self.project.read(cx).remote_connection_options(cx) {
 5840            WorkspaceLocation::Location(SerializedWorkspaceLocation::Remote(connection), paths)
 5841        } else if self.project.read(cx).is_local() {
 5842            if !paths.is_empty() {
 5843                WorkspaceLocation::Location(SerializedWorkspaceLocation::Local, paths)
 5844            } else {
 5845                WorkspaceLocation::DetachFromSession
 5846            }
 5847        } else {
 5848            WorkspaceLocation::None
 5849        }
 5850    }
 5851
 5852    fn update_history(&self, cx: &mut App) {
 5853        let Some(id) = self.database_id() else {
 5854            return;
 5855        };
 5856        if !self.project.read(cx).is_local() {
 5857            return;
 5858        }
 5859        if let Some(manager) = HistoryManager::global(cx) {
 5860            let paths = PathList::new(&self.root_paths(cx));
 5861            manager.update(cx, |this, cx| {
 5862                this.update_history(id, HistoryManagerEntry::new(id, &paths), cx);
 5863            });
 5864        }
 5865    }
 5866
 5867    async fn serialize_items(
 5868        this: &WeakEntity<Self>,
 5869        items_rx: UnboundedReceiver<Box<dyn SerializableItemHandle>>,
 5870        cx: &mut AsyncWindowContext,
 5871    ) -> Result<()> {
 5872        const CHUNK_SIZE: usize = 200;
 5873
 5874        let mut serializable_items = items_rx.ready_chunks(CHUNK_SIZE);
 5875
 5876        while let Some(items_received) = serializable_items.next().await {
 5877            let unique_items =
 5878                items_received
 5879                    .into_iter()
 5880                    .fold(HashMap::default(), |mut acc, item| {
 5881                        acc.entry(item.item_id()).or_insert(item);
 5882                        acc
 5883                    });
 5884
 5885            // We use into_iter() here so that the references to the items are moved into
 5886            // the tasks and not kept alive while we're sleeping.
 5887            for (_, item) in unique_items.into_iter() {
 5888                if let Ok(Some(task)) = this.update_in(cx, |workspace, window, cx| {
 5889                    item.serialize(workspace, false, window, cx)
 5890                }) {
 5891                    cx.background_spawn(async move { task.await.log_err() })
 5892                        .detach();
 5893                }
 5894            }
 5895
 5896            cx.background_executor()
 5897                .timer(SERIALIZATION_THROTTLE_TIME)
 5898                .await;
 5899        }
 5900
 5901        Ok(())
 5902    }
 5903
 5904    pub(crate) fn enqueue_item_serialization(
 5905        &mut self,
 5906        item: Box<dyn SerializableItemHandle>,
 5907    ) -> Result<()> {
 5908        self.serializable_items_tx
 5909            .unbounded_send(item)
 5910            .map_err(|err| anyhow!("failed to send serializable item over channel: {err}"))
 5911    }
 5912
 5913    pub(crate) fn load_workspace(
 5914        serialized_workspace: SerializedWorkspace,
 5915        paths_to_open: Vec<Option<ProjectPath>>,
 5916        window: &mut Window,
 5917        cx: &mut Context<Workspace>,
 5918    ) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 5919        cx.spawn_in(window, async move |workspace, cx| {
 5920            let project = workspace.read_with(cx, |workspace, _| workspace.project().clone())?;
 5921
 5922            let mut center_group = None;
 5923            let mut center_items = None;
 5924
 5925            // Traverse the splits tree and add to things
 5926            if let Some((group, active_pane, items)) = serialized_workspace
 5927                .center_group
 5928                .deserialize(&project, serialized_workspace.id, workspace.clone(), cx)
 5929                .await
 5930            {
 5931                center_items = Some(items);
 5932                center_group = Some((group, active_pane))
 5933            }
 5934
 5935            let mut items_by_project_path = HashMap::default();
 5936            let mut item_ids_by_kind = HashMap::default();
 5937            let mut all_deserialized_items = Vec::default();
 5938            cx.update(|_, cx| {
 5939                for item in center_items.unwrap_or_default().into_iter().flatten() {
 5940                    if let Some(serializable_item_handle) = item.to_serializable_item_handle(cx) {
 5941                        item_ids_by_kind
 5942                            .entry(serializable_item_handle.serialized_item_kind())
 5943                            .or_insert(Vec::new())
 5944                            .push(item.item_id().as_u64() as ItemId);
 5945                    }
 5946
 5947                    if let Some(project_path) = item.project_path(cx) {
 5948                        items_by_project_path.insert(project_path, item.clone());
 5949                    }
 5950                    all_deserialized_items.push(item);
 5951                }
 5952            })?;
 5953
 5954            let opened_items = paths_to_open
 5955                .into_iter()
 5956                .map(|path_to_open| {
 5957                    path_to_open
 5958                        .and_then(|path_to_open| items_by_project_path.remove(&path_to_open))
 5959                })
 5960                .collect::<Vec<_>>();
 5961
 5962            // Remove old panes from workspace panes list
 5963            workspace.update_in(cx, |workspace, window, cx| {
 5964                if let Some((center_group, active_pane)) = center_group {
 5965                    workspace.remove_panes(workspace.center.root.clone(), window, cx);
 5966
 5967                    // Swap workspace center group
 5968                    workspace.center = PaneGroup::with_root(center_group);
 5969                    workspace.center.set_is_center(true);
 5970                    workspace.center.mark_positions(cx);
 5971
 5972                    if let Some(active_pane) = active_pane {
 5973                        workspace.set_active_pane(&active_pane, window, cx);
 5974                        cx.focus_self(window);
 5975                    } else {
 5976                        workspace.set_active_pane(&workspace.center.first_pane(), window, cx);
 5977                    }
 5978                }
 5979
 5980                let docks = serialized_workspace.docks;
 5981
 5982                for (dock, serialized_dock) in [
 5983                    (&mut workspace.right_dock, docks.right),
 5984                    (&mut workspace.left_dock, docks.left),
 5985                    (&mut workspace.bottom_dock, docks.bottom),
 5986                ]
 5987                .iter_mut()
 5988                {
 5989                    dock.update(cx, |dock, cx| {
 5990                        dock.serialized_dock = Some(serialized_dock.clone());
 5991                        dock.restore_state(window, cx);
 5992                    });
 5993                }
 5994
 5995                cx.notify();
 5996            })?;
 5997
 5998            let _ = project
 5999                .update(cx, |project, cx| {
 6000                    project
 6001                        .breakpoint_store()
 6002                        .update(cx, |breakpoint_store, cx| {
 6003                            breakpoint_store
 6004                                .with_serialized_breakpoints(serialized_workspace.breakpoints, cx)
 6005                        })
 6006                })
 6007                .await;
 6008
 6009            // Clean up all the items that have _not_ been loaded. Our ItemIds aren't stable. That means
 6010            // after loading the items, we might have different items and in order to avoid
 6011            // the database filling up, we delete items that haven't been loaded now.
 6012            //
 6013            // The items that have been loaded, have been saved after they've been added to the workspace.
 6014            let clean_up_tasks = workspace.update_in(cx, |_, window, cx| {
 6015                item_ids_by_kind
 6016                    .into_iter()
 6017                    .map(|(item_kind, loaded_items)| {
 6018                        SerializableItemRegistry::cleanup(
 6019                            item_kind,
 6020                            serialized_workspace.id,
 6021                            loaded_items,
 6022                            window,
 6023                            cx,
 6024                        )
 6025                        .log_err()
 6026                    })
 6027                    .collect::<Vec<_>>()
 6028            })?;
 6029
 6030            futures::future::join_all(clean_up_tasks).await;
 6031
 6032            workspace
 6033                .update_in(cx, |workspace, window, cx| {
 6034                    // Serialize ourself to make sure our timestamps and any pane / item changes are replicated
 6035                    workspace.serialize_workspace_internal(window, cx).detach();
 6036
 6037                    // Ensure that we mark the window as edited if we did load dirty items
 6038                    workspace.update_window_edited(window, cx);
 6039                })
 6040                .ok();
 6041
 6042            Ok(opened_items)
 6043        })
 6044    }
 6045
 6046    fn actions(&self, div: Div, window: &mut Window, cx: &mut Context<Self>) -> Div {
 6047        self.add_workspace_actions_listeners(div, window, cx)
 6048            .on_action(cx.listener(
 6049                |_workspace, action_sequence: &settings::ActionSequence, window, cx| {
 6050                    for action in &action_sequence.0 {
 6051                        window.dispatch_action(action.boxed_clone(), cx);
 6052                    }
 6053                },
 6054            ))
 6055            .on_action(cx.listener(Self::close_inactive_items_and_panes))
 6056            .on_action(cx.listener(Self::close_all_items_and_panes))
 6057            .on_action(cx.listener(Self::save_all))
 6058            .on_action(cx.listener(Self::send_keystrokes))
 6059            .on_action(cx.listener(Self::add_folder_to_project))
 6060            .on_action(cx.listener(Self::follow_next_collaborator))
 6061            .on_action(cx.listener(Self::close_window))
 6062            .on_action(cx.listener(Self::activate_pane_at_index))
 6063            .on_action(cx.listener(Self::move_item_to_pane_at_index))
 6064            .on_action(cx.listener(Self::move_focused_panel_to_next_position))
 6065            .on_action(cx.listener(Self::toggle_edit_predictions_all_files))
 6066            .on_action(cx.listener(|workspace, _: &Unfollow, window, cx| {
 6067                let pane = workspace.active_pane().clone();
 6068                workspace.unfollow_in_pane(&pane, window, cx);
 6069            }))
 6070            .on_action(cx.listener(|workspace, action: &Save, window, cx| {
 6071                workspace
 6072                    .save_active_item(action.save_intent.unwrap_or(SaveIntent::Save), window, cx)
 6073                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 6074            }))
 6075            .on_action(cx.listener(|workspace, _: &SaveWithoutFormat, window, cx| {
 6076                workspace
 6077                    .save_active_item(SaveIntent::SaveWithoutFormat, window, cx)
 6078                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 6079            }))
 6080            .on_action(cx.listener(|workspace, _: &SaveAs, window, cx| {
 6081                workspace
 6082                    .save_active_item(SaveIntent::SaveAs, window, cx)
 6083                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 6084            }))
 6085            .on_action(
 6086                cx.listener(|workspace, _: &ActivatePreviousPane, window, cx| {
 6087                    workspace.activate_previous_pane(window, cx)
 6088                }),
 6089            )
 6090            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 6091                workspace.activate_next_pane(window, cx)
 6092            }))
 6093            .on_action(
 6094                cx.listener(|workspace, _: &ActivateNextWindow, _window, cx| {
 6095                    workspace.activate_next_window(cx)
 6096                }),
 6097            )
 6098            .on_action(
 6099                cx.listener(|workspace, _: &ActivatePreviousWindow, _window, cx| {
 6100                    workspace.activate_previous_window(cx)
 6101                }),
 6102            )
 6103            .on_action(cx.listener(|workspace, _: &ActivatePaneLeft, window, cx| {
 6104                workspace.activate_pane_in_direction(SplitDirection::Left, window, cx)
 6105            }))
 6106            .on_action(cx.listener(|workspace, _: &ActivatePaneRight, window, cx| {
 6107                workspace.activate_pane_in_direction(SplitDirection::Right, window, cx)
 6108            }))
 6109            .on_action(cx.listener(|workspace, _: &ActivatePaneUp, window, cx| {
 6110                workspace.activate_pane_in_direction(SplitDirection::Up, window, cx)
 6111            }))
 6112            .on_action(cx.listener(|workspace, _: &ActivatePaneDown, window, cx| {
 6113                workspace.activate_pane_in_direction(SplitDirection::Down, window, cx)
 6114            }))
 6115            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 6116                workspace.activate_next_pane(window, cx)
 6117            }))
 6118            .on_action(cx.listener(
 6119                |workspace, action: &MoveItemToPaneInDirection, window, cx| {
 6120                    workspace.move_item_to_pane_in_direction(action, window, cx)
 6121                },
 6122            ))
 6123            .on_action(cx.listener(|workspace, _: &SwapPaneLeft, _, cx| {
 6124                workspace.swap_pane_in_direction(SplitDirection::Left, cx)
 6125            }))
 6126            .on_action(cx.listener(|workspace, _: &SwapPaneRight, _, cx| {
 6127                workspace.swap_pane_in_direction(SplitDirection::Right, cx)
 6128            }))
 6129            .on_action(cx.listener(|workspace, _: &SwapPaneUp, _, cx| {
 6130                workspace.swap_pane_in_direction(SplitDirection::Up, cx)
 6131            }))
 6132            .on_action(cx.listener(|workspace, _: &SwapPaneDown, _, cx| {
 6133                workspace.swap_pane_in_direction(SplitDirection::Down, cx)
 6134            }))
 6135            .on_action(cx.listener(|workspace, _: &SwapPaneAdjacent, window, cx| {
 6136                const DIRECTION_PRIORITY: [SplitDirection; 4] = [
 6137                    SplitDirection::Down,
 6138                    SplitDirection::Up,
 6139                    SplitDirection::Right,
 6140                    SplitDirection::Left,
 6141                ];
 6142                for dir in DIRECTION_PRIORITY {
 6143                    if workspace.find_pane_in_direction(dir, cx).is_some() {
 6144                        workspace.swap_pane_in_direction(dir, cx);
 6145                        workspace.activate_pane_in_direction(dir.opposite(), window, cx);
 6146                        break;
 6147                    }
 6148                }
 6149            }))
 6150            .on_action(cx.listener(|workspace, _: &MovePaneLeft, _, cx| {
 6151                workspace.move_pane_to_border(SplitDirection::Left, cx)
 6152            }))
 6153            .on_action(cx.listener(|workspace, _: &MovePaneRight, _, cx| {
 6154                workspace.move_pane_to_border(SplitDirection::Right, cx)
 6155            }))
 6156            .on_action(cx.listener(|workspace, _: &MovePaneUp, _, cx| {
 6157                workspace.move_pane_to_border(SplitDirection::Up, cx)
 6158            }))
 6159            .on_action(cx.listener(|workspace, _: &MovePaneDown, _, cx| {
 6160                workspace.move_pane_to_border(SplitDirection::Down, cx)
 6161            }))
 6162            .on_action(cx.listener(|this, _: &ToggleLeftDock, window, cx| {
 6163                this.toggle_dock(DockPosition::Left, window, cx);
 6164            }))
 6165            .on_action(cx.listener(
 6166                |workspace: &mut Workspace, _: &ToggleRightDock, window, cx| {
 6167                    workspace.toggle_dock(DockPosition::Right, window, cx);
 6168                },
 6169            ))
 6170            .on_action(cx.listener(
 6171                |workspace: &mut Workspace, _: &ToggleBottomDock, window, cx| {
 6172                    workspace.toggle_dock(DockPosition::Bottom, window, cx);
 6173                },
 6174            ))
 6175            .on_action(cx.listener(
 6176                |workspace: &mut Workspace, _: &CloseActiveDock, window, cx| {
 6177                    if !workspace.close_active_dock(window, cx) {
 6178                        cx.propagate();
 6179                    }
 6180                },
 6181            ))
 6182            .on_action(
 6183                cx.listener(|workspace: &mut Workspace, _: &CloseAllDocks, window, cx| {
 6184                    workspace.close_all_docks(window, cx);
 6185                }),
 6186            )
 6187            .on_action(cx.listener(Self::toggle_all_docks))
 6188            .on_action(cx.listener(
 6189                |workspace: &mut Workspace, _: &ClearAllNotifications, _, cx| {
 6190                    workspace.clear_all_notifications(cx);
 6191                },
 6192            ))
 6193            .on_action(cx.listener(
 6194                |workspace: &mut Workspace, _: &ClearNavigationHistory, window, cx| {
 6195                    workspace.clear_navigation_history(window, cx);
 6196                },
 6197            ))
 6198            .on_action(cx.listener(
 6199                |workspace: &mut Workspace, _: &SuppressNotification, _, cx| {
 6200                    if let Some((notification_id, _)) = workspace.notifications.pop() {
 6201                        workspace.suppress_notification(&notification_id, cx);
 6202                    }
 6203                },
 6204            ))
 6205            .on_action(cx.listener(
 6206                |workspace: &mut Workspace, _: &ToggleWorktreeSecurity, window, cx| {
 6207                    workspace.show_worktree_trust_security_modal(true, window, cx);
 6208                },
 6209            ))
 6210            .on_action(
 6211                cx.listener(|_: &mut Workspace, _: &ClearTrustedWorktrees, _, cx| {
 6212                    if let Some(trusted_worktrees) = TrustedWorktrees::try_get_global(cx) {
 6213                        trusted_worktrees.update(cx, |trusted_worktrees, _| {
 6214                            trusted_worktrees.clear_trusted_paths()
 6215                        });
 6216                        let clear_task = persistence::DB.clear_trusted_worktrees();
 6217                        cx.spawn(async move |_, cx| {
 6218                            if clear_task.await.log_err().is_some() {
 6219                                cx.update(|cx| reload(cx));
 6220                            }
 6221                        })
 6222                        .detach();
 6223                    }
 6224                }),
 6225            )
 6226            .on_action(cx.listener(
 6227                |workspace: &mut Workspace, _: &ReopenClosedItem, window, cx| {
 6228                    workspace.reopen_closed_item(window, cx).detach();
 6229                },
 6230            ))
 6231            .on_action(cx.listener(
 6232                |workspace: &mut Workspace, _: &ResetActiveDockSize, window, cx| {
 6233                    for dock in workspace.all_docks() {
 6234                        if dock.focus_handle(cx).contains_focused(window, cx) {
 6235                            let Some(panel) = dock.read(cx).active_panel() else {
 6236                                return;
 6237                            };
 6238
 6239                            // Set to `None`, then the size will fall back to the default.
 6240                            panel.clone().set_size(None, window, cx);
 6241
 6242                            return;
 6243                        }
 6244                    }
 6245                },
 6246            ))
 6247            .on_action(cx.listener(
 6248                |workspace: &mut Workspace, _: &ResetOpenDocksSize, window, cx| {
 6249                    for dock in workspace.all_docks() {
 6250                        if let Some(panel) = dock.read(cx).visible_panel() {
 6251                            // Set to `None`, then the size will fall back to the default.
 6252                            panel.clone().set_size(None, window, cx);
 6253                        }
 6254                    }
 6255                },
 6256            ))
 6257            .on_action(cx.listener(
 6258                |workspace: &mut Workspace, act: &IncreaseActiveDockSize, window, cx| {
 6259                    adjust_active_dock_size_by_px(
 6260                        px_with_ui_font_fallback(act.px, cx),
 6261                        workspace,
 6262                        window,
 6263                        cx,
 6264                    );
 6265                },
 6266            ))
 6267            .on_action(cx.listener(
 6268                |workspace: &mut Workspace, act: &DecreaseActiveDockSize, window, cx| {
 6269                    adjust_active_dock_size_by_px(
 6270                        px_with_ui_font_fallback(act.px, cx) * -1.,
 6271                        workspace,
 6272                        window,
 6273                        cx,
 6274                    );
 6275                },
 6276            ))
 6277            .on_action(cx.listener(
 6278                |workspace: &mut Workspace, act: &IncreaseOpenDocksSize, window, cx| {
 6279                    adjust_open_docks_size_by_px(
 6280                        px_with_ui_font_fallback(act.px, cx),
 6281                        workspace,
 6282                        window,
 6283                        cx,
 6284                    );
 6285                },
 6286            ))
 6287            .on_action(cx.listener(
 6288                |workspace: &mut Workspace, act: &DecreaseOpenDocksSize, window, cx| {
 6289                    adjust_open_docks_size_by_px(
 6290                        px_with_ui_font_fallback(act.px, cx) * -1.,
 6291                        workspace,
 6292                        window,
 6293                        cx,
 6294                    );
 6295                },
 6296            ))
 6297            .on_action(cx.listener(Workspace::toggle_centered_layout))
 6298            .on_action(cx.listener(
 6299                |workspace: &mut Workspace, _action: &pane::ActivateNextItem, window, cx| {
 6300                    if let Some(active_dock) = workspace.active_dock(window, cx) {
 6301                        let dock = active_dock.read(cx);
 6302                        if let Some(active_panel) = dock.active_panel() {
 6303                            if active_panel.pane(cx).is_none() {
 6304                                let mut recent_pane: Option<Entity<Pane>> = None;
 6305                                let mut recent_timestamp = 0;
 6306                                for pane_handle in workspace.panes() {
 6307                                    let pane = pane_handle.read(cx);
 6308                                    for entry in pane.activation_history() {
 6309                                        if entry.timestamp > recent_timestamp {
 6310                                            recent_timestamp = entry.timestamp;
 6311                                            recent_pane = Some(pane_handle.clone());
 6312                                        }
 6313                                    }
 6314                                }
 6315
 6316                                if let Some(pane) = recent_pane {
 6317                                    pane.update(cx, |pane, cx| {
 6318                                        let current_index = pane.active_item_index();
 6319                                        let items_len = pane.items_len();
 6320                                        if items_len > 0 {
 6321                                            let next_index = if current_index + 1 < items_len {
 6322                                                current_index + 1
 6323                                            } else {
 6324                                                0
 6325                                            };
 6326                                            pane.activate_item(
 6327                                                next_index, false, false, window, cx,
 6328                                            );
 6329                                        }
 6330                                    });
 6331                                    return;
 6332                                }
 6333                            }
 6334                        }
 6335                    }
 6336                    cx.propagate();
 6337                },
 6338            ))
 6339            .on_action(cx.listener(
 6340                |workspace: &mut Workspace, _action: &pane::ActivatePreviousItem, window, cx| {
 6341                    if let Some(active_dock) = workspace.active_dock(window, cx) {
 6342                        let dock = active_dock.read(cx);
 6343                        if let Some(active_panel) = dock.active_panel() {
 6344                            if active_panel.pane(cx).is_none() {
 6345                                let mut recent_pane: Option<Entity<Pane>> = None;
 6346                                let mut recent_timestamp = 0;
 6347                                for pane_handle in workspace.panes() {
 6348                                    let pane = pane_handle.read(cx);
 6349                                    for entry in pane.activation_history() {
 6350                                        if entry.timestamp > recent_timestamp {
 6351                                            recent_timestamp = entry.timestamp;
 6352                                            recent_pane = Some(pane_handle.clone());
 6353                                        }
 6354                                    }
 6355                                }
 6356
 6357                                if let Some(pane) = recent_pane {
 6358                                    pane.update(cx, |pane, cx| {
 6359                                        let current_index = pane.active_item_index();
 6360                                        let items_len = pane.items_len();
 6361                                        if items_len > 0 {
 6362                                            let prev_index = if current_index > 0 {
 6363                                                current_index - 1
 6364                                            } else {
 6365                                                items_len.saturating_sub(1)
 6366                                            };
 6367                                            pane.activate_item(
 6368                                                prev_index, false, false, window, cx,
 6369                                            );
 6370                                        }
 6371                                    });
 6372                                    return;
 6373                                }
 6374                            }
 6375                        }
 6376                    }
 6377                    cx.propagate();
 6378                },
 6379            ))
 6380            .on_action(
 6381                cx.listener(|workspace, _: &ToggleReadOnlyFile, window, cx| {
 6382                    let pane = workspace.active_pane().clone();
 6383                    if let Some(item) = pane.read(cx).active_item() {
 6384                        item.toggle_read_only(window, cx);
 6385                    }
 6386                }),
 6387            )
 6388            .on_action(cx.listener(Workspace::cancel))
 6389    }
 6390
 6391    #[cfg(any(test, feature = "test-support"))]
 6392    pub fn set_random_database_id(&mut self) {
 6393        self.database_id = Some(WorkspaceId(Uuid::new_v4().as_u64_pair().0 as i64));
 6394    }
 6395
 6396    #[cfg(any(test, feature = "test-support"))]
 6397    pub fn test_new(project: Entity<Project>, window: &mut Window, cx: &mut Context<Self>) -> Self {
 6398        use node_runtime::NodeRuntime;
 6399        use session::Session;
 6400
 6401        let client = project.read(cx).client();
 6402        let user_store = project.read(cx).user_store();
 6403        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 6404        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 6405        window.activate_window();
 6406        let app_state = Arc::new(AppState {
 6407            languages: project.read(cx).languages().clone(),
 6408            workspace_store,
 6409            client,
 6410            user_store,
 6411            fs: project.read(cx).fs().clone(),
 6412            build_window_options: |_, _| Default::default(),
 6413            node_runtime: NodeRuntime::unavailable(),
 6414            session,
 6415        });
 6416        let workspace = Self::new(Default::default(), project, app_state, window, cx);
 6417        workspace
 6418            .active_pane
 6419            .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx));
 6420        workspace
 6421    }
 6422
 6423    pub fn register_action<A: Action>(
 6424        &mut self,
 6425        callback: impl Fn(&mut Self, &A, &mut Window, &mut Context<Self>) + 'static,
 6426    ) -> &mut Self {
 6427        let callback = Arc::new(callback);
 6428
 6429        self.workspace_actions.push(Box::new(move |div, _, _, cx| {
 6430            let callback = callback.clone();
 6431            div.on_action(cx.listener(move |workspace, event, window, cx| {
 6432                (callback)(workspace, event, window, cx)
 6433            }))
 6434        }));
 6435        self
 6436    }
 6437    pub fn register_action_renderer(
 6438        &mut self,
 6439        callback: impl Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div + 'static,
 6440    ) -> &mut Self {
 6441        self.workspace_actions.push(Box::new(callback));
 6442        self
 6443    }
 6444
 6445    fn add_workspace_actions_listeners(
 6446        &self,
 6447        mut div: Div,
 6448        window: &mut Window,
 6449        cx: &mut Context<Self>,
 6450    ) -> Div {
 6451        for action in self.workspace_actions.iter() {
 6452            div = (action)(div, self, window, cx)
 6453        }
 6454        div
 6455    }
 6456
 6457    pub fn has_active_modal(&self, _: &mut Window, cx: &mut App) -> bool {
 6458        self.modal_layer.read(cx).has_active_modal()
 6459    }
 6460
 6461    pub fn active_modal<V: ManagedView + 'static>(&self, cx: &App) -> Option<Entity<V>> {
 6462        self.modal_layer.read(cx).active_modal()
 6463    }
 6464
 6465    /// Toggles a modal of type `V`. If a modal of the same type is currently active,
 6466    /// it will be hidden. If a different modal is active, it will be replaced with the new one.
 6467    /// If no modal is active, the new modal will be shown.
 6468    ///
 6469    /// If closing the current modal fails (e.g., due to `on_before_dismiss` returning
 6470    /// `DismissDecision::Dismiss(false)` or `DismissDecision::Pending`), the new modal
 6471    /// will not be shown.
 6472    pub fn toggle_modal<V: ModalView, B>(&mut self, window: &mut Window, cx: &mut App, build: B)
 6473    where
 6474        B: FnOnce(&mut Window, &mut Context<V>) -> V,
 6475    {
 6476        self.modal_layer.update(cx, |modal_layer, cx| {
 6477            modal_layer.toggle_modal(window, cx, build)
 6478        })
 6479    }
 6480
 6481    pub fn hide_modal(&mut self, window: &mut Window, cx: &mut App) -> bool {
 6482        self.modal_layer
 6483            .update(cx, |modal_layer, cx| modal_layer.hide_modal(window, cx))
 6484    }
 6485
 6486    pub fn toggle_status_toast<V: ToastView>(&mut self, entity: Entity<V>, cx: &mut App) {
 6487        self.toast_layer
 6488            .update(cx, |toast_layer, cx| toast_layer.toggle_toast(cx, entity))
 6489    }
 6490
 6491    pub fn toggle_centered_layout(
 6492        &mut self,
 6493        _: &ToggleCenteredLayout,
 6494        _: &mut Window,
 6495        cx: &mut Context<Self>,
 6496    ) {
 6497        self.centered_layout = !self.centered_layout;
 6498        if let Some(database_id) = self.database_id() {
 6499            cx.background_spawn(DB.set_centered_layout(database_id, self.centered_layout))
 6500                .detach_and_log_err(cx);
 6501        }
 6502        cx.notify();
 6503    }
 6504
 6505    fn adjust_padding(padding: Option<f32>) -> f32 {
 6506        padding
 6507            .unwrap_or(CenteredPaddingSettings::default().0)
 6508            .clamp(
 6509                CenteredPaddingSettings::MIN_PADDING,
 6510                CenteredPaddingSettings::MAX_PADDING,
 6511            )
 6512    }
 6513
 6514    fn render_dock(
 6515        &self,
 6516        position: DockPosition,
 6517        dock: &Entity<Dock>,
 6518        window: &mut Window,
 6519        cx: &mut App,
 6520    ) -> Option<Div> {
 6521        if self.zoomed_position == Some(position) {
 6522            return None;
 6523        }
 6524
 6525        let leader_border = dock.read(cx).active_panel().and_then(|panel| {
 6526            let pane = panel.pane(cx)?;
 6527            let follower_states = &self.follower_states;
 6528            leader_border_for_pane(follower_states, &pane, window, cx)
 6529        });
 6530
 6531        Some(
 6532            div()
 6533                .flex()
 6534                .flex_none()
 6535                .overflow_hidden()
 6536                .child(dock.clone())
 6537                .children(leader_border),
 6538        )
 6539    }
 6540
 6541    pub fn for_window(window: &mut Window, _: &mut App) -> Option<Entity<Workspace>> {
 6542        window.root().flatten()
 6543    }
 6544
 6545    pub fn zoomed_item(&self) -> Option<&AnyWeakView> {
 6546        self.zoomed.as_ref()
 6547    }
 6548
 6549    pub fn activate_next_window(&mut self, cx: &mut Context<Self>) {
 6550        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 6551            return;
 6552        };
 6553        let windows = cx.windows();
 6554        let next_window =
 6555            SystemWindowTabController::get_next_tab_group_window(cx, current_window_id).or_else(
 6556                || {
 6557                    windows
 6558                        .iter()
 6559                        .cycle()
 6560                        .skip_while(|window| window.window_id() != current_window_id)
 6561                        .nth(1)
 6562                },
 6563            );
 6564
 6565        if let Some(window) = next_window {
 6566            window
 6567                .update(cx, |_, window, _| window.activate_window())
 6568                .ok();
 6569        }
 6570    }
 6571
 6572    pub fn activate_previous_window(&mut self, cx: &mut Context<Self>) {
 6573        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 6574            return;
 6575        };
 6576        let windows = cx.windows();
 6577        let prev_window =
 6578            SystemWindowTabController::get_prev_tab_group_window(cx, current_window_id).or_else(
 6579                || {
 6580                    windows
 6581                        .iter()
 6582                        .rev()
 6583                        .cycle()
 6584                        .skip_while(|window| window.window_id() != current_window_id)
 6585                        .nth(1)
 6586                },
 6587            );
 6588
 6589        if let Some(window) = prev_window {
 6590            window
 6591                .update(cx, |_, window, _| window.activate_window())
 6592                .ok();
 6593        }
 6594    }
 6595
 6596    pub fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
 6597        if cx.stop_active_drag(window) {
 6598        } else if let Some((notification_id, _)) = self.notifications.pop() {
 6599            dismiss_app_notification(&notification_id, cx);
 6600        } else {
 6601            cx.propagate();
 6602        }
 6603    }
 6604
 6605    fn adjust_dock_size_by_px(
 6606        &mut self,
 6607        panel_size: Pixels,
 6608        dock_pos: DockPosition,
 6609        px: Pixels,
 6610        window: &mut Window,
 6611        cx: &mut Context<Self>,
 6612    ) {
 6613        match dock_pos {
 6614            DockPosition::Left => self.resize_left_dock(panel_size + px, window, cx),
 6615            DockPosition::Right => self.resize_right_dock(panel_size + px, window, cx),
 6616            DockPosition::Bottom => self.resize_bottom_dock(panel_size + px, window, cx),
 6617        }
 6618    }
 6619
 6620    fn resize_left_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 6621        let size = new_size.min(self.bounds.right() - RESIZE_HANDLE_SIZE);
 6622
 6623        self.left_dock.update(cx, |left_dock, cx| {
 6624            if WorkspaceSettings::get_global(cx)
 6625                .resize_all_panels_in_dock
 6626                .contains(&DockPosition::Left)
 6627            {
 6628                left_dock.resize_all_panels(Some(size), window, cx);
 6629            } else {
 6630                left_dock.resize_active_panel(Some(size), window, cx);
 6631            }
 6632        });
 6633        self.clamp_utility_pane_widths(window, cx);
 6634    }
 6635
 6636    fn resize_right_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 6637        let mut size = new_size.max(self.bounds.left() - RESIZE_HANDLE_SIZE);
 6638        self.left_dock.read_with(cx, |left_dock, cx| {
 6639            let left_dock_size = left_dock
 6640                .active_panel_size(window, cx)
 6641                .unwrap_or(Pixels::ZERO);
 6642            if left_dock_size + size > self.bounds.right() {
 6643                size = self.bounds.right() - left_dock_size
 6644            }
 6645        });
 6646        self.right_dock.update(cx, |right_dock, cx| {
 6647            if WorkspaceSettings::get_global(cx)
 6648                .resize_all_panels_in_dock
 6649                .contains(&DockPosition::Right)
 6650            {
 6651                right_dock.resize_all_panels(Some(size), window, cx);
 6652            } else {
 6653                right_dock.resize_active_panel(Some(size), window, cx);
 6654            }
 6655        });
 6656        self.clamp_utility_pane_widths(window, cx);
 6657    }
 6658
 6659    fn resize_bottom_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 6660        let size = new_size.min(self.bounds.bottom() - RESIZE_HANDLE_SIZE - self.bounds.top());
 6661        self.bottom_dock.update(cx, |bottom_dock, cx| {
 6662            if WorkspaceSettings::get_global(cx)
 6663                .resize_all_panels_in_dock
 6664                .contains(&DockPosition::Bottom)
 6665            {
 6666                bottom_dock.resize_all_panels(Some(size), window, cx);
 6667            } else {
 6668                bottom_dock.resize_active_panel(Some(size), window, cx);
 6669            }
 6670        });
 6671        self.clamp_utility_pane_widths(window, cx);
 6672    }
 6673
 6674    fn max_utility_pane_width(&self, window: &Window, cx: &App) -> Pixels {
 6675        let left_dock_width = self
 6676            .left_dock
 6677            .read(cx)
 6678            .active_panel_size(window, cx)
 6679            .unwrap_or(px(0.0));
 6680        let right_dock_width = self
 6681            .right_dock
 6682            .read(cx)
 6683            .active_panel_size(window, cx)
 6684            .unwrap_or(px(0.0));
 6685        let center_pane_width = self.bounds.size.width - left_dock_width - right_dock_width;
 6686        center_pane_width - px(10.0)
 6687    }
 6688
 6689    fn clamp_utility_pane_widths(&mut self, window: &mut Window, cx: &mut App) {
 6690        let max_width = self.max_utility_pane_width(window, cx);
 6691
 6692        // Clamp left slot utility pane if it exists
 6693        if let Some(handle) = self.utility_pane(UtilityPaneSlot::Left) {
 6694            let current_width = handle.width(cx);
 6695            if current_width > max_width {
 6696                handle.set_width(Some(max_width.max(UTILITY_PANE_MIN_WIDTH)), cx);
 6697            }
 6698        }
 6699
 6700        // Clamp right slot utility pane if it exists
 6701        if let Some(handle) = self.utility_pane(UtilityPaneSlot::Right) {
 6702            let current_width = handle.width(cx);
 6703            if current_width > max_width {
 6704                handle.set_width(Some(max_width.max(UTILITY_PANE_MIN_WIDTH)), cx);
 6705            }
 6706        }
 6707    }
 6708
 6709    fn toggle_edit_predictions_all_files(
 6710        &mut self,
 6711        _: &ToggleEditPrediction,
 6712        _window: &mut Window,
 6713        cx: &mut Context<Self>,
 6714    ) {
 6715        let fs = self.project().read(cx).fs().clone();
 6716        let show_edit_predictions = all_language_settings(None, cx).show_edit_predictions(None, cx);
 6717        update_settings_file(fs, cx, move |file, _| {
 6718            file.project.all_languages.defaults.show_edit_predictions = Some(!show_edit_predictions)
 6719        });
 6720    }
 6721
 6722    pub fn show_worktree_trust_security_modal(
 6723        &mut self,
 6724        toggle: bool,
 6725        window: &mut Window,
 6726        cx: &mut Context<Self>,
 6727    ) {
 6728        if let Some(security_modal) = self.active_modal::<SecurityModal>(cx) {
 6729            if toggle {
 6730                security_modal.update(cx, |security_modal, cx| {
 6731                    security_modal.dismiss(cx);
 6732                })
 6733            } else {
 6734                security_modal.update(cx, |security_modal, cx| {
 6735                    security_modal.refresh_restricted_paths(cx);
 6736                });
 6737            }
 6738        } else {
 6739            let has_restricted_worktrees = TrustedWorktrees::try_get_global(cx)
 6740                .map(|trusted_worktrees| {
 6741                    trusted_worktrees
 6742                        .read(cx)
 6743                        .has_restricted_worktrees(&self.project().read(cx).worktree_store(), cx)
 6744                })
 6745                .unwrap_or(false);
 6746            if has_restricted_worktrees {
 6747                let project = self.project().read(cx);
 6748                let remote_host = project
 6749                    .remote_connection_options(cx)
 6750                    .map(RemoteHostLocation::from);
 6751                let worktree_store = project.worktree_store().downgrade();
 6752                self.toggle_modal(window, cx, |_, cx| {
 6753                    SecurityModal::new(worktree_store, remote_host, cx)
 6754                });
 6755            }
 6756        }
 6757    }
 6758}
 6759
 6760fn leader_border_for_pane(
 6761    follower_states: &HashMap<CollaboratorId, FollowerState>,
 6762    pane: &Entity<Pane>,
 6763    _: &Window,
 6764    cx: &App,
 6765) -> Option<Div> {
 6766    let (leader_id, _follower_state) = follower_states.iter().find_map(|(leader_id, state)| {
 6767        if state.pane() == pane {
 6768            Some((*leader_id, state))
 6769        } else {
 6770            None
 6771        }
 6772    })?;
 6773
 6774    let mut leader_color = match leader_id {
 6775        CollaboratorId::PeerId(leader_peer_id) => {
 6776            let room = ActiveCall::try_global(cx)?.read(cx).room()?.read(cx);
 6777            let leader = room.remote_participant_for_peer_id(leader_peer_id)?;
 6778
 6779            cx.theme()
 6780                .players()
 6781                .color_for_participant(leader.participant_index.0)
 6782                .cursor
 6783        }
 6784        CollaboratorId::Agent => cx.theme().players().agent().cursor,
 6785    };
 6786    leader_color.fade_out(0.3);
 6787    Some(
 6788        div()
 6789            .absolute()
 6790            .size_full()
 6791            .left_0()
 6792            .top_0()
 6793            .border_2()
 6794            .border_color(leader_color),
 6795    )
 6796}
 6797
 6798fn window_bounds_env_override() -> Option<Bounds<Pixels>> {
 6799    ZED_WINDOW_POSITION
 6800        .zip(*ZED_WINDOW_SIZE)
 6801        .map(|(position, size)| Bounds {
 6802            origin: position,
 6803            size,
 6804        })
 6805}
 6806
 6807fn open_items(
 6808    serialized_workspace: Option<SerializedWorkspace>,
 6809    mut project_paths_to_open: Vec<(PathBuf, Option<ProjectPath>)>,
 6810    window: &mut Window,
 6811    cx: &mut Context<Workspace>,
 6812) -> impl 'static + Future<Output = Result<Vec<Option<Result<Box<dyn ItemHandle>>>>>> + use<> {
 6813    let restored_items = serialized_workspace.map(|serialized_workspace| {
 6814        Workspace::load_workspace(
 6815            serialized_workspace,
 6816            project_paths_to_open
 6817                .iter()
 6818                .map(|(_, project_path)| project_path)
 6819                .cloned()
 6820                .collect(),
 6821            window,
 6822            cx,
 6823        )
 6824    });
 6825
 6826    cx.spawn_in(window, async move |workspace, cx| {
 6827        let mut opened_items = Vec::with_capacity(project_paths_to_open.len());
 6828
 6829        if let Some(restored_items) = restored_items {
 6830            let restored_items = restored_items.await?;
 6831
 6832            let restored_project_paths = restored_items
 6833                .iter()
 6834                .filter_map(|item| {
 6835                    cx.update(|_, cx| item.as_ref()?.project_path(cx))
 6836                        .ok()
 6837                        .flatten()
 6838                })
 6839                .collect::<HashSet<_>>();
 6840
 6841            for restored_item in restored_items {
 6842                opened_items.push(restored_item.map(Ok));
 6843            }
 6844
 6845            project_paths_to_open
 6846                .iter_mut()
 6847                .for_each(|(_, project_path)| {
 6848                    if let Some(project_path_to_open) = project_path
 6849                        && restored_project_paths.contains(project_path_to_open)
 6850                    {
 6851                        *project_path = None;
 6852                    }
 6853                });
 6854        } else {
 6855            for _ in 0..project_paths_to_open.len() {
 6856                opened_items.push(None);
 6857            }
 6858        }
 6859        assert!(opened_items.len() == project_paths_to_open.len());
 6860
 6861        let tasks =
 6862            project_paths_to_open
 6863                .into_iter()
 6864                .enumerate()
 6865                .map(|(ix, (abs_path, project_path))| {
 6866                    let workspace = workspace.clone();
 6867                    cx.spawn(async move |cx| {
 6868                        let file_project_path = project_path?;
 6869                        let abs_path_task = workspace.update(cx, |workspace, cx| {
 6870                            workspace.project().update(cx, |project, cx| {
 6871                                project.resolve_abs_path(abs_path.to_string_lossy().as_ref(), cx)
 6872                            })
 6873                        });
 6874
 6875                        // We only want to open file paths here. If one of the items
 6876                        // here is a directory, it was already opened further above
 6877                        // with a `find_or_create_worktree`.
 6878                        if let Ok(task) = abs_path_task
 6879                            && task.await.is_none_or(|p| p.is_file())
 6880                        {
 6881                            return Some((
 6882                                ix,
 6883                                workspace
 6884                                    .update_in(cx, |workspace, window, cx| {
 6885                                        workspace.open_path(
 6886                                            file_project_path,
 6887                                            None,
 6888                                            true,
 6889                                            window,
 6890                                            cx,
 6891                                        )
 6892                                    })
 6893                                    .log_err()?
 6894                                    .await,
 6895                            ));
 6896                        }
 6897                        None
 6898                    })
 6899                });
 6900
 6901        let tasks = tasks.collect::<Vec<_>>();
 6902
 6903        let tasks = futures::future::join_all(tasks);
 6904        for (ix, path_open_result) in tasks.await.into_iter().flatten() {
 6905            opened_items[ix] = Some(path_open_result);
 6906        }
 6907
 6908        Ok(opened_items)
 6909    })
 6910}
 6911
 6912enum ActivateInDirectionTarget {
 6913    Pane(Entity<Pane>),
 6914    Dock(Entity<Dock>),
 6915}
 6916
 6917fn notify_if_database_failed(workspace: WindowHandle<Workspace>, cx: &mut AsyncApp) {
 6918    workspace
 6919        .update(cx, |workspace, _, cx| {
 6920            if (*db::ALL_FILE_DB_FAILED).load(std::sync::atomic::Ordering::Acquire) {
 6921                struct DatabaseFailedNotification;
 6922
 6923                workspace.show_notification(
 6924                    NotificationId::unique::<DatabaseFailedNotification>(),
 6925                    cx,
 6926                    |cx| {
 6927                        cx.new(|cx| {
 6928                            MessageNotification::new("Failed to load the database file.", cx)
 6929                                .primary_message("File an Issue")
 6930                                .primary_icon(IconName::Plus)
 6931                                .primary_on_click(|window, cx| {
 6932                                    window.dispatch_action(Box::new(FileBugReport), cx)
 6933                                })
 6934                        })
 6935                    },
 6936                );
 6937            }
 6938        })
 6939        .log_err();
 6940}
 6941
 6942fn px_with_ui_font_fallback(val: u32, cx: &Context<Workspace>) -> Pixels {
 6943    if val == 0 {
 6944        ThemeSettings::get_global(cx).ui_font_size(cx)
 6945    } else {
 6946        px(val as f32)
 6947    }
 6948}
 6949
 6950fn adjust_active_dock_size_by_px(
 6951    px: Pixels,
 6952    workspace: &mut Workspace,
 6953    window: &mut Window,
 6954    cx: &mut Context<Workspace>,
 6955) {
 6956    let Some(active_dock) = workspace
 6957        .all_docks()
 6958        .into_iter()
 6959        .find(|dock| dock.focus_handle(cx).contains_focused(window, cx))
 6960    else {
 6961        return;
 6962    };
 6963    let dock = active_dock.read(cx);
 6964    let Some(panel_size) = dock.active_panel_size(window, cx) else {
 6965        return;
 6966    };
 6967    let dock_pos = dock.position();
 6968    workspace.adjust_dock_size_by_px(panel_size, dock_pos, px, window, cx);
 6969}
 6970
 6971fn adjust_open_docks_size_by_px(
 6972    px: Pixels,
 6973    workspace: &mut Workspace,
 6974    window: &mut Window,
 6975    cx: &mut Context<Workspace>,
 6976) {
 6977    let docks = workspace
 6978        .all_docks()
 6979        .into_iter()
 6980        .filter_map(|dock| {
 6981            if dock.read(cx).is_open() {
 6982                let dock = dock.read(cx);
 6983                let panel_size = dock.active_panel_size(window, cx)?;
 6984                let dock_pos = dock.position();
 6985                Some((panel_size, dock_pos, px))
 6986            } else {
 6987                None
 6988            }
 6989        })
 6990        .collect::<Vec<_>>();
 6991
 6992    docks
 6993        .into_iter()
 6994        .for_each(|(panel_size, dock_pos, offset)| {
 6995            workspace.adjust_dock_size_by_px(panel_size, dock_pos, offset, window, cx);
 6996        });
 6997}
 6998
 6999impl Focusable for Workspace {
 7000    fn focus_handle(&self, cx: &App) -> FocusHandle {
 7001        self.active_pane.focus_handle(cx)
 7002    }
 7003}
 7004
 7005#[derive(Clone)]
 7006struct DraggedDock(DockPosition);
 7007
 7008impl Render for DraggedDock {
 7009    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
 7010        gpui::Empty
 7011    }
 7012}
 7013
 7014impl Render for Workspace {
 7015    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 7016        static FIRST_PAINT: AtomicBool = AtomicBool::new(true);
 7017        if FIRST_PAINT.swap(false, std::sync::atomic::Ordering::Relaxed) {
 7018            log::info!("Rendered first frame");
 7019        }
 7020        let mut context = KeyContext::new_with_defaults();
 7021        context.add("Workspace");
 7022        context.set("keyboard_layout", cx.keyboard_layout().name().to_string());
 7023        if let Some(status) = self
 7024            .debugger_provider
 7025            .as_ref()
 7026            .and_then(|provider| provider.active_thread_state(cx))
 7027        {
 7028            match status {
 7029                ThreadStatus::Running | ThreadStatus::Stepping => {
 7030                    context.add("debugger_running");
 7031                }
 7032                ThreadStatus::Stopped => context.add("debugger_stopped"),
 7033                ThreadStatus::Exited | ThreadStatus::Ended => {}
 7034            }
 7035        }
 7036
 7037        if self.left_dock.read(cx).is_open() {
 7038            if let Some(active_panel) = self.left_dock.read(cx).active_panel() {
 7039                context.set("left_dock", active_panel.panel_key());
 7040            }
 7041        }
 7042
 7043        if self.right_dock.read(cx).is_open() {
 7044            if let Some(active_panel) = self.right_dock.read(cx).active_panel() {
 7045                context.set("right_dock", active_panel.panel_key());
 7046            }
 7047        }
 7048
 7049        if self.bottom_dock.read(cx).is_open() {
 7050            if let Some(active_panel) = self.bottom_dock.read(cx).active_panel() {
 7051                context.set("bottom_dock", active_panel.panel_key());
 7052            }
 7053        }
 7054
 7055        let centered_layout = self.centered_layout
 7056            && self.center.panes().len() == 1
 7057            && self.active_item(cx).is_some();
 7058        let render_padding = |size| {
 7059            (size > 0.0).then(|| {
 7060                div()
 7061                    .h_full()
 7062                    .w(relative(size))
 7063                    .bg(cx.theme().colors().editor_background)
 7064                    .border_color(cx.theme().colors().pane_group_border)
 7065            })
 7066        };
 7067        let paddings = if centered_layout {
 7068            let settings = WorkspaceSettings::get_global(cx).centered_layout;
 7069            (
 7070                render_padding(Self::adjust_padding(
 7071                    settings.left_padding.map(|padding| padding.0),
 7072                )),
 7073                render_padding(Self::adjust_padding(
 7074                    settings.right_padding.map(|padding| padding.0),
 7075                )),
 7076            )
 7077        } else {
 7078            (None, None)
 7079        };
 7080        let ui_font = theme::setup_ui_font(window, cx);
 7081
 7082        let theme = cx.theme().clone();
 7083        let colors = theme.colors();
 7084        let notification_entities = self
 7085            .notifications
 7086            .iter()
 7087            .map(|(_, notification)| notification.entity_id())
 7088            .collect::<Vec<_>>();
 7089        let bottom_dock_layout = WorkspaceSettings::get_global(cx).bottom_dock_layout;
 7090
 7091        client_side_decorations(
 7092            self.actions(div(), window, cx)
 7093                .key_context(context)
 7094                .relative()
 7095                .size_full()
 7096                .flex()
 7097                .flex_col()
 7098                .font(ui_font)
 7099                .gap_0()
 7100                .justify_start()
 7101                .items_start()
 7102                .text_color(colors.text)
 7103                .overflow_hidden()
 7104                .children(self.titlebar_item.clone())
 7105                .on_modifiers_changed(move |_, _, cx| {
 7106                    for &id in &notification_entities {
 7107                        cx.notify(id);
 7108                    }
 7109                })
 7110                .child(
 7111                    div()
 7112                        .size_full()
 7113                        .relative()
 7114                        .flex_1()
 7115                        .flex()
 7116                        .flex_col()
 7117                        .child(
 7118                            div()
 7119                                .id("workspace")
 7120                                .bg(colors.background)
 7121                                .relative()
 7122                                .flex_1()
 7123                                .w_full()
 7124                                .flex()
 7125                                .flex_col()
 7126                                .overflow_hidden()
 7127                                .border_t_1()
 7128                                .border_b_1()
 7129                                .border_color(colors.border)
 7130                                .child({
 7131                                    let this = cx.entity();
 7132                                    canvas(
 7133                                        move |bounds, window, cx| {
 7134                                            this.update(cx, |this, cx| {
 7135                                                let bounds_changed = this.bounds != bounds;
 7136                                                this.bounds = bounds;
 7137
 7138                                                if bounds_changed {
 7139                                                    this.left_dock.update(cx, |dock, cx| {
 7140                                                        dock.clamp_panel_size(
 7141                                                            bounds.size.width,
 7142                                                            window,
 7143                                                            cx,
 7144                                                        )
 7145                                                    });
 7146
 7147                                                    this.right_dock.update(cx, |dock, cx| {
 7148                                                        dock.clamp_panel_size(
 7149                                                            bounds.size.width,
 7150                                                            window,
 7151                                                            cx,
 7152                                                        )
 7153                                                    });
 7154
 7155                                                    this.bottom_dock.update(cx, |dock, cx| {
 7156                                                        dock.clamp_panel_size(
 7157                                                            bounds.size.height,
 7158                                                            window,
 7159                                                            cx,
 7160                                                        )
 7161                                                    });
 7162                                                }
 7163                                            })
 7164                                        },
 7165                                        |_, _, _, _| {},
 7166                                    )
 7167                                    .absolute()
 7168                                    .size_full()
 7169                                })
 7170                                .when(self.zoomed.is_none(), |this| {
 7171                                    this.on_drag_move(cx.listener(
 7172                                        move |workspace,
 7173                                              e: &DragMoveEvent<DraggedDock>,
 7174                                              window,
 7175                                              cx| {
 7176                                            if workspace.previous_dock_drag_coordinates
 7177                                                != Some(e.event.position)
 7178                                            {
 7179                                                workspace.previous_dock_drag_coordinates =
 7180                                                    Some(e.event.position);
 7181                                                match e.drag(cx).0 {
 7182                                                    DockPosition::Left => {
 7183                                                        workspace.resize_left_dock(
 7184                                                            e.event.position.x
 7185                                                                - workspace.bounds.left(),
 7186                                                            window,
 7187                                                            cx,
 7188                                                        );
 7189                                                    }
 7190                                                    DockPosition::Right => {
 7191                                                        workspace.resize_right_dock(
 7192                                                            workspace.bounds.right()
 7193                                                                - e.event.position.x,
 7194                                                            window,
 7195                                                            cx,
 7196                                                        );
 7197                                                    }
 7198                                                    DockPosition::Bottom => {
 7199                                                        workspace.resize_bottom_dock(
 7200                                                            workspace.bounds.bottom()
 7201                                                                - e.event.position.y,
 7202                                                            window,
 7203                                                            cx,
 7204                                                        );
 7205                                                    }
 7206                                                };
 7207                                                workspace.serialize_workspace(window, cx);
 7208                                            }
 7209                                        },
 7210                                    ))
 7211                                    .on_drag_move(cx.listener(
 7212                                        move |workspace,
 7213                                              e: &DragMoveEvent<DraggedUtilityPane>,
 7214                                              window,
 7215                                              cx| {
 7216                                            let slot = e.drag(cx).0;
 7217                                            match slot {
 7218                                                UtilityPaneSlot::Left => {
 7219                                                    let left_dock_width = workspace.left_dock.read(cx)
 7220                                                        .active_panel_size(window, cx)
 7221                                                        .unwrap_or(gpui::px(0.0));
 7222                                                    let new_width = e.event.position.x
 7223                                                        - workspace.bounds.left()
 7224                                                        - left_dock_width;
 7225                                                    workspace.resize_utility_pane(slot, new_width, window, cx);
 7226                                                }
 7227                                                UtilityPaneSlot::Right => {
 7228                                                    let right_dock_width = workspace.right_dock.read(cx)
 7229                                                        .active_panel_size(window, cx)
 7230                                                        .unwrap_or(gpui::px(0.0));
 7231                                                    let new_width = workspace.bounds.right()
 7232                                                        - e.event.position.x
 7233                                                        - right_dock_width;
 7234                                                    workspace.resize_utility_pane(slot, new_width, window, cx);
 7235                                                }
 7236                                            }
 7237                                        },
 7238                                    ))
 7239                                })
 7240                                .child({
 7241                                    match bottom_dock_layout {
 7242                                        BottomDockLayout::Full => div()
 7243                                            .flex()
 7244                                            .flex_col()
 7245                                            .h_full()
 7246                                            .child(
 7247                                                div()
 7248                                                    .flex()
 7249                                                    .flex_row()
 7250                                                    .flex_1()
 7251                                                    .overflow_hidden()
 7252                                                    .children(self.render_dock(
 7253                                                        DockPosition::Left,
 7254                                                        &self.left_dock,
 7255                                                        window,
 7256                                                        cx,
 7257                                                    ))
 7258                                                    .when(cx.has_flag::<AgentV2FeatureFlag>(), |this| {
 7259                                                        this.when_some(self.utility_pane(UtilityPaneSlot::Left), |this, pane| {
 7260                                                            this.when(pane.expanded(cx), |this| {
 7261                                                                this.child(
 7262                                                                    UtilityPaneFrame::new(UtilityPaneSlot::Left, pane.box_clone(), cx)
 7263                                                                )
 7264                                                            })
 7265                                                        })
 7266                                                    })
 7267                                                    .child(
 7268                                                        div()
 7269                                                            .flex()
 7270                                                            .flex_col()
 7271                                                            .flex_1()
 7272                                                            .overflow_hidden()
 7273                                                            .child(
 7274                                                                h_flex()
 7275                                                                    .flex_1()
 7276                                                                    .when_some(
 7277                                                                        paddings.0,
 7278                                                                        |this, p| {
 7279                                                                            this.child(
 7280                                                                                p.border_r_1(),
 7281                                                                            )
 7282                                                                        },
 7283                                                                    )
 7284                                                                    .child(self.center.render(
 7285                                                                        self.zoomed.as_ref(),
 7286                                                                        &PaneRenderContext {
 7287                                                                            follower_states:
 7288                                                                                &self.follower_states,
 7289                                                                            active_call: self.active_call(),
 7290                                                                            active_pane: &self.active_pane,
 7291                                                                            app_state: &self.app_state,
 7292                                                                            project: &self.project,
 7293                                                                            workspace: &self.weak_self,
 7294                                                                        },
 7295                                                                        window,
 7296                                                                        cx,
 7297                                                                    ))
 7298                                                                    .when_some(
 7299                                                                        paddings.1,
 7300                                                                        |this, p| {
 7301                                                                            this.child(
 7302                                                                                p.border_l_1(),
 7303                                                                            )
 7304                                                                        },
 7305                                                                    ),
 7306                                                            ),
 7307                                                    )
 7308                                                    .when(cx.has_flag::<AgentV2FeatureFlag>(), |this| {
 7309                                                        this.when_some(self.utility_pane(UtilityPaneSlot::Right), |this, pane| {
 7310                                                            this.when(pane.expanded(cx), |this| {
 7311                                                                this.child(
 7312                                                                    UtilityPaneFrame::new(UtilityPaneSlot::Right, pane.box_clone(), cx)
 7313                                                                )
 7314                                                            })
 7315                                                        })
 7316                                                    })
 7317                                                    .children(self.render_dock(
 7318                                                        DockPosition::Right,
 7319                                                        &self.right_dock,
 7320                                                        window,
 7321                                                        cx,
 7322                                                    )),
 7323                                            )
 7324                                            .child(div().w_full().children(self.render_dock(
 7325                                                DockPosition::Bottom,
 7326                                                &self.bottom_dock,
 7327                                                window,
 7328                                                cx
 7329                                            ))),
 7330
 7331                                        BottomDockLayout::LeftAligned => div()
 7332                                            .flex()
 7333                                            .flex_row()
 7334                                            .h_full()
 7335                                            .child(
 7336                                                div()
 7337                                                    .flex()
 7338                                                    .flex_col()
 7339                                                    .flex_1()
 7340                                                    .h_full()
 7341                                                    .child(
 7342                                                        div()
 7343                                                            .flex()
 7344                                                            .flex_row()
 7345                                                            .flex_1()
 7346                                                            .children(self.render_dock(DockPosition::Left, &self.left_dock, window, cx))
 7347                                                            .when(cx.has_flag::<AgentV2FeatureFlag>(), |this| {
 7348                                                                this.when_some(self.utility_pane(UtilityPaneSlot::Left), |this, pane| {
 7349                                                                    this.when(pane.expanded(cx), |this| {
 7350                                                                        this.child(
 7351                                                                            UtilityPaneFrame::new(UtilityPaneSlot::Left, pane.box_clone(), cx)
 7352                                                                        )
 7353                                                                    })
 7354                                                                })
 7355                                                            })
 7356                                                            .child(
 7357                                                                div()
 7358                                                                    .flex()
 7359                                                                    .flex_col()
 7360                                                                    .flex_1()
 7361                                                                    .overflow_hidden()
 7362                                                                    .child(
 7363                                                                        h_flex()
 7364                                                                            .flex_1()
 7365                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 7366                                                                            .child(self.center.render(
 7367                                                                                self.zoomed.as_ref(),
 7368                                                                                &PaneRenderContext {
 7369                                                                                    follower_states:
 7370                                                                                        &self.follower_states,
 7371                                                                                    active_call: self.active_call(),
 7372                                                                                    active_pane: &self.active_pane,
 7373                                                                                    app_state: &self.app_state,
 7374                                                                                    project: &self.project,
 7375                                                                                    workspace: &self.weak_self,
 7376                                                                                },
 7377                                                                                window,
 7378                                                                                cx,
 7379                                                                            ))
 7380                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 7381                                                                    )
 7382                                                            )
 7383                                                            .when_some(self.utility_pane(UtilityPaneSlot::Right), |this, pane| {
 7384                                                                this.when(pane.expanded(cx), |this| {
 7385                                                                    this.child(
 7386                                                                        UtilityPaneFrame::new(UtilityPaneSlot::Right, pane.box_clone(), cx)
 7387                                                                    )
 7388                                                                })
 7389                                                            })
 7390                                                    )
 7391                                                    .child(
 7392                                                        div()
 7393                                                            .w_full()
 7394                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 7395                                                    ),
 7396                                            )
 7397                                            .children(self.render_dock(
 7398                                                DockPosition::Right,
 7399                                                &self.right_dock,
 7400                                                window,
 7401                                                cx,
 7402                                            )),
 7403
 7404                                        BottomDockLayout::RightAligned => div()
 7405                                            .flex()
 7406                                            .flex_row()
 7407                                            .h_full()
 7408                                            .children(self.render_dock(
 7409                                                DockPosition::Left,
 7410                                                &self.left_dock,
 7411                                                window,
 7412                                                cx,
 7413                                            ))
 7414                                            .when(cx.has_flag::<AgentV2FeatureFlag>(), |this| {
 7415                                                this.when_some(self.utility_pane(UtilityPaneSlot::Left), |this, pane| {
 7416                                                    this.when(pane.expanded(cx), |this| {
 7417                                                        this.child(
 7418                                                            UtilityPaneFrame::new(UtilityPaneSlot::Left, pane.box_clone(), cx)
 7419                                                        )
 7420                                                    })
 7421                                                })
 7422                                            })
 7423                                            .child(
 7424                                                div()
 7425                                                    .flex()
 7426                                                    .flex_col()
 7427                                                    .flex_1()
 7428                                                    .h_full()
 7429                                                    .child(
 7430                                                        div()
 7431                                                            .flex()
 7432                                                            .flex_row()
 7433                                                            .flex_1()
 7434                                                            .child(
 7435                                                                div()
 7436                                                                    .flex()
 7437                                                                    .flex_col()
 7438                                                                    .flex_1()
 7439                                                                    .overflow_hidden()
 7440                                                                    .child(
 7441                                                                        h_flex()
 7442                                                                            .flex_1()
 7443                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 7444                                                                            .child(self.center.render(
 7445                                                                                self.zoomed.as_ref(),
 7446                                                                                &PaneRenderContext {
 7447                                                                                    follower_states:
 7448                                                                                        &self.follower_states,
 7449                                                                                    active_call: self.active_call(),
 7450                                                                                    active_pane: &self.active_pane,
 7451                                                                                    app_state: &self.app_state,
 7452                                                                                    project: &self.project,
 7453                                                                                    workspace: &self.weak_self,
 7454                                                                                },
 7455                                                                                window,
 7456                                                                                cx,
 7457                                                                            ))
 7458                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 7459                                                                    )
 7460                                                            )
 7461                                                            .when(cx.has_flag::<AgentV2FeatureFlag>(), |this| {
 7462                                                                this.when_some(self.utility_pane(UtilityPaneSlot::Right), |this, pane| {
 7463                                                                    this.when(pane.expanded(cx), |this| {
 7464                                                                        this.child(
 7465                                                                            UtilityPaneFrame::new(UtilityPaneSlot::Right, pane.box_clone(), cx)
 7466                                                                        )
 7467                                                                    })
 7468                                                                })
 7469                                                            })
 7470                                                            .children(self.render_dock(DockPosition::Right, &self.right_dock, window, cx))
 7471                                                    )
 7472                                                    .child(
 7473                                                        div()
 7474                                                            .w_full()
 7475                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 7476                                                    ),
 7477                                            ),
 7478
 7479                                        BottomDockLayout::Contained => div()
 7480                                            .flex()
 7481                                            .flex_row()
 7482                                            .h_full()
 7483                                            .children(self.render_dock(
 7484                                                DockPosition::Left,
 7485                                                &self.left_dock,
 7486                                                window,
 7487                                                cx,
 7488                                            ))
 7489                                            .when_some(self.utility_pane(UtilityPaneSlot::Left), |this, pane| {
 7490                                                this.when(pane.expanded(cx), |this| {
 7491                                                    this.child(
 7492                                                        UtilityPaneFrame::new(UtilityPaneSlot::Left, pane.box_clone(), cx)
 7493                                                    )
 7494                                                })
 7495                                            })
 7496                                            .child(
 7497                                                div()
 7498                                                    .flex()
 7499                                                    .flex_col()
 7500                                                    .flex_1()
 7501                                                    .overflow_hidden()
 7502                                                    .child(
 7503                                                        h_flex()
 7504                                                            .flex_1()
 7505                                                            .when_some(paddings.0, |this, p| {
 7506                                                                this.child(p.border_r_1())
 7507                                                            })
 7508                                                            .child(self.center.render(
 7509                                                                self.zoomed.as_ref(),
 7510                                                                &PaneRenderContext {
 7511                                                                    follower_states:
 7512                                                                        &self.follower_states,
 7513                                                                    active_call: self.active_call(),
 7514                                                                    active_pane: &self.active_pane,
 7515                                                                    app_state: &self.app_state,
 7516                                                                    project: &self.project,
 7517                                                                    workspace: &self.weak_self,
 7518                                                                },
 7519                                                                window,
 7520                                                                cx,
 7521                                                            ))
 7522                                                            .when_some(paddings.1, |this, p| {
 7523                                                                this.child(p.border_l_1())
 7524                                                            }),
 7525                                                    )
 7526                                                    .children(self.render_dock(
 7527                                                        DockPosition::Bottom,
 7528                                                        &self.bottom_dock,
 7529                                                        window,
 7530                                                        cx,
 7531                                                    )),
 7532                                            )
 7533                                            .when(cx.has_flag::<AgentV2FeatureFlag>(), |this| {
 7534                                                this.when_some(self.utility_pane(UtilityPaneSlot::Right), |this, pane| {
 7535                                                    this.when(pane.expanded(cx), |this| {
 7536                                                        this.child(
 7537                                                            UtilityPaneFrame::new(UtilityPaneSlot::Right, pane.box_clone(), cx)
 7538                                                        )
 7539                                                    })
 7540                                                })
 7541                                            })
 7542                                            .children(self.render_dock(
 7543                                                DockPosition::Right,
 7544                                                &self.right_dock,
 7545                                                window,
 7546                                                cx,
 7547                                            )),
 7548                                    }
 7549                                })
 7550                                .children(self.zoomed.as_ref().and_then(|view| {
 7551                                    let zoomed_view = view.upgrade()?;
 7552                                    let div = div()
 7553                                        .occlude()
 7554                                        .absolute()
 7555                                        .overflow_hidden()
 7556                                        .border_color(colors.border)
 7557                                        .bg(colors.background)
 7558                                        .child(zoomed_view)
 7559                                        .inset_0()
 7560                                        .shadow_lg();
 7561
 7562                                    if !WorkspaceSettings::get_global(cx).zoomed_padding {
 7563                                       return Some(div);
 7564                                    }
 7565
 7566                                    Some(match self.zoomed_position {
 7567                                        Some(DockPosition::Left) => div.right_2().border_r_1(),
 7568                                        Some(DockPosition::Right) => div.left_2().border_l_1(),
 7569                                        Some(DockPosition::Bottom) => div.top_2().border_t_1(),
 7570                                        None => {
 7571                                            div.top_2().bottom_2().left_2().right_2().border_1()
 7572                                        }
 7573                                    })
 7574                                }))
 7575                                .children(self.render_notifications(window, cx)),
 7576                        )
 7577                        .when(self.status_bar_visible(cx), |parent| {
 7578                            parent.child(self.status_bar.clone())
 7579                        })
 7580                        .child(self.modal_layer.clone())
 7581                        .child(self.toast_layer.clone()),
 7582                ),
 7583            window,
 7584            cx,
 7585        )
 7586    }
 7587}
 7588
 7589impl WorkspaceStore {
 7590    pub fn new(client: Arc<Client>, cx: &mut Context<Self>) -> Self {
 7591        Self {
 7592            workspaces: Default::default(),
 7593            _subscriptions: vec![
 7594                client.add_request_handler(cx.weak_entity(), Self::handle_follow),
 7595                client.add_message_handler(cx.weak_entity(), Self::handle_update_followers),
 7596            ],
 7597            client,
 7598        }
 7599    }
 7600
 7601    pub fn update_followers(
 7602        &self,
 7603        project_id: Option<u64>,
 7604        update: proto::update_followers::Variant,
 7605        cx: &App,
 7606    ) -> Option<()> {
 7607        let active_call = ActiveCall::try_global(cx)?;
 7608        let room_id = active_call.read(cx).room()?.read(cx).id();
 7609        self.client
 7610            .send(proto::UpdateFollowers {
 7611                room_id,
 7612                project_id,
 7613                variant: Some(update),
 7614            })
 7615            .log_err()
 7616    }
 7617
 7618    pub async fn handle_follow(
 7619        this: Entity<Self>,
 7620        envelope: TypedEnvelope<proto::Follow>,
 7621        mut cx: AsyncApp,
 7622    ) -> Result<proto::FollowResponse> {
 7623        this.update(&mut cx, |this, cx| {
 7624            let follower = Follower {
 7625                project_id: envelope.payload.project_id,
 7626                peer_id: envelope.original_sender_id()?,
 7627            };
 7628
 7629            let mut response = proto::FollowResponse::default();
 7630            this.workspaces.retain(|workspace| {
 7631                workspace
 7632                    .update(cx, |workspace, window, cx| {
 7633                        let handler_response =
 7634                            workspace.handle_follow(follower.project_id, window, cx);
 7635                        if let Some(active_view) = handler_response.active_view
 7636                            && workspace.project.read(cx).remote_id() == follower.project_id
 7637                        {
 7638                            response.active_view = Some(active_view)
 7639                        }
 7640                    })
 7641                    .is_ok()
 7642            });
 7643
 7644            Ok(response)
 7645        })
 7646    }
 7647
 7648    async fn handle_update_followers(
 7649        this: Entity<Self>,
 7650        envelope: TypedEnvelope<proto::UpdateFollowers>,
 7651        mut cx: AsyncApp,
 7652    ) -> Result<()> {
 7653        let leader_id = envelope.original_sender_id()?;
 7654        let update = envelope.payload;
 7655
 7656        this.update(&mut cx, |this, cx| {
 7657            this.workspaces.retain(|workspace| {
 7658                workspace
 7659                    .update(cx, |workspace, window, cx| {
 7660                        let project_id = workspace.project.read(cx).remote_id();
 7661                        if update.project_id != project_id && update.project_id.is_some() {
 7662                            return;
 7663                        }
 7664                        workspace.handle_update_followers(leader_id, update.clone(), window, cx);
 7665                    })
 7666                    .is_ok()
 7667            });
 7668            Ok(())
 7669        })
 7670    }
 7671
 7672    pub fn workspaces(&self) -> &HashSet<WindowHandle<Workspace>> {
 7673        &self.workspaces
 7674    }
 7675}
 7676
 7677impl ViewId {
 7678    pub(crate) fn from_proto(message: proto::ViewId) -> Result<Self> {
 7679        Ok(Self {
 7680            creator: message
 7681                .creator
 7682                .map(CollaboratorId::PeerId)
 7683                .context("creator is missing")?,
 7684            id: message.id,
 7685        })
 7686    }
 7687
 7688    pub(crate) fn to_proto(self) -> Option<proto::ViewId> {
 7689        if let CollaboratorId::PeerId(peer_id) = self.creator {
 7690            Some(proto::ViewId {
 7691                creator: Some(peer_id),
 7692                id: self.id,
 7693            })
 7694        } else {
 7695            None
 7696        }
 7697    }
 7698}
 7699
 7700impl FollowerState {
 7701    fn pane(&self) -> &Entity<Pane> {
 7702        self.dock_pane.as_ref().unwrap_or(&self.center_pane)
 7703    }
 7704}
 7705
 7706pub trait WorkspaceHandle {
 7707    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath>;
 7708}
 7709
 7710impl WorkspaceHandle for Entity<Workspace> {
 7711    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath> {
 7712        self.read(cx)
 7713            .worktrees(cx)
 7714            .flat_map(|worktree| {
 7715                let worktree_id = worktree.read(cx).id();
 7716                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
 7717                    worktree_id,
 7718                    path: f.path.clone(),
 7719                })
 7720            })
 7721            .collect::<Vec<_>>()
 7722    }
 7723}
 7724
 7725pub async fn last_opened_workspace_location() -> Option<(SerializedWorkspaceLocation, PathList)> {
 7726    DB.last_workspace().await.log_err().flatten()
 7727}
 7728
 7729pub fn last_session_workspace_locations(
 7730    last_session_id: &str,
 7731    last_session_window_stack: Option<Vec<WindowId>>,
 7732) -> Option<Vec<(SerializedWorkspaceLocation, PathList)>> {
 7733    DB.last_session_workspace_locations(last_session_id, last_session_window_stack)
 7734        .log_err()
 7735}
 7736
 7737actions!(
 7738    collab,
 7739    [
 7740        /// Opens the channel notes for the current call.
 7741        ///
 7742        /// Use `collab_panel::OpenSelectedChannelNotes` to open the channel notes for the selected
 7743        /// channel in the collab panel.
 7744        ///
 7745        /// If you want to open a specific channel, use `zed::OpenZedUrl` with a channel notes URL -
 7746        /// can be copied via "Copy link to section" in the context menu of the channel notes
 7747        /// buffer. These URLs look like `https://zed.dev/channel/channel-name-CHANNEL_ID/notes`.
 7748        OpenChannelNotes,
 7749        /// Mutes your microphone.
 7750        Mute,
 7751        /// Deafens yourself (mute both microphone and speakers).
 7752        Deafen,
 7753        /// Leaves the current call.
 7754        LeaveCall,
 7755        /// Shares the current project with collaborators.
 7756        ShareProject,
 7757        /// Shares your screen with collaborators.
 7758        ScreenShare,
 7759        /// Copies the current room name and session id for debugging purposes.
 7760        CopyRoomId,
 7761    ]
 7762);
 7763actions!(
 7764    zed,
 7765    [
 7766        /// Opens the Zed log file.
 7767        OpenLog,
 7768        /// Reveals the Zed log file in the system file manager.
 7769        RevealLogInFileManager
 7770    ]
 7771);
 7772
 7773async fn join_channel_internal(
 7774    channel_id: ChannelId,
 7775    app_state: &Arc<AppState>,
 7776    requesting_window: Option<WindowHandle<Workspace>>,
 7777    active_call: &Entity<ActiveCall>,
 7778    cx: &mut AsyncApp,
 7779) -> Result<bool> {
 7780    let (should_prompt, open_room) = active_call.update(cx, |active_call, cx| {
 7781        let Some(room) = active_call.room().map(|room| room.read(cx)) else {
 7782            return (false, None);
 7783        };
 7784
 7785        let already_in_channel = room.channel_id() == Some(channel_id);
 7786        let should_prompt = room.is_sharing_project()
 7787            && !room.remote_participants().is_empty()
 7788            && !already_in_channel;
 7789        let open_room = if already_in_channel {
 7790            active_call.room().cloned()
 7791        } else {
 7792            None
 7793        };
 7794        (should_prompt, open_room)
 7795    });
 7796
 7797    if let Some(room) = open_room {
 7798        let task = room.update(cx, |room, cx| {
 7799            if let Some((project, host)) = room.most_active_project(cx) {
 7800                return Some(join_in_room_project(project, host, app_state.clone(), cx));
 7801            }
 7802
 7803            None
 7804        });
 7805        if let Some(task) = task {
 7806            task.await?;
 7807        }
 7808        return anyhow::Ok(true);
 7809    }
 7810
 7811    if should_prompt {
 7812        if let Some(workspace) = requesting_window {
 7813            let answer = workspace
 7814                .update(cx, |_, window, cx| {
 7815                    window.prompt(
 7816                        PromptLevel::Warning,
 7817                        "Do you want to switch channels?",
 7818                        Some("Leaving this call will unshare your current project."),
 7819                        &["Yes, Join Channel", "Cancel"],
 7820                        cx,
 7821                    )
 7822                })?
 7823                .await;
 7824
 7825            if answer == Ok(1) {
 7826                return Ok(false);
 7827            }
 7828        } else {
 7829            return Ok(false); // unreachable!() hopefully
 7830        }
 7831    }
 7832
 7833    let client = cx.update(|cx| active_call.read(cx).client());
 7834
 7835    let mut client_status = client.status();
 7836
 7837    // this loop will terminate within client::CONNECTION_TIMEOUT seconds.
 7838    'outer: loop {
 7839        let Some(status) = client_status.recv().await else {
 7840            anyhow::bail!("error connecting");
 7841        };
 7842
 7843        match status {
 7844            Status::Connecting
 7845            | Status::Authenticating
 7846            | Status::Authenticated
 7847            | Status::Reconnecting
 7848            | Status::Reauthenticating
 7849            | Status::Reauthenticated => continue,
 7850            Status::Connected { .. } => break 'outer,
 7851            Status::SignedOut | Status::AuthenticationError => {
 7852                return Err(ErrorCode::SignedOut.into());
 7853            }
 7854            Status::UpgradeRequired => return Err(ErrorCode::UpgradeRequired.into()),
 7855            Status::ConnectionError | Status::ConnectionLost | Status::ReconnectionError { .. } => {
 7856                return Err(ErrorCode::Disconnected.into());
 7857            }
 7858        }
 7859    }
 7860
 7861    let room = active_call
 7862        .update(cx, |active_call, cx| {
 7863            active_call.join_channel(channel_id, cx)
 7864        })
 7865        .await?;
 7866
 7867    let Some(room) = room else {
 7868        return anyhow::Ok(true);
 7869    };
 7870
 7871    room.update(cx, |room, _| room.room_update_completed())
 7872        .await;
 7873
 7874    let task = room.update(cx, |room, cx| {
 7875        if let Some((project, host)) = room.most_active_project(cx) {
 7876            return Some(join_in_room_project(project, host, app_state.clone(), cx));
 7877        }
 7878
 7879        // If you are the first to join a channel, see if you should share your project.
 7880        if room.remote_participants().is_empty()
 7881            && !room.local_participant_is_guest()
 7882            && let Some(workspace) = requesting_window
 7883        {
 7884            let project = workspace.update(cx, |workspace, _, cx| {
 7885                let project = workspace.project.read(cx);
 7886
 7887                if !CallSettings::get_global(cx).share_on_join {
 7888                    return None;
 7889                }
 7890
 7891                if (project.is_local() || project.is_via_remote_server())
 7892                    && project.visible_worktrees(cx).any(|tree| {
 7893                        tree.read(cx)
 7894                            .root_entry()
 7895                            .is_some_and(|entry| entry.is_dir())
 7896                    })
 7897                {
 7898                    Some(workspace.project.clone())
 7899                } else {
 7900                    None
 7901                }
 7902            });
 7903            if let Ok(Some(project)) = project {
 7904                return Some(cx.spawn(async move |room, cx| {
 7905                    room.update(cx, |room, cx| room.share_project(project, cx))?
 7906                        .await?;
 7907                    Ok(())
 7908                }));
 7909            }
 7910        }
 7911
 7912        None
 7913    });
 7914    if let Some(task) = task {
 7915        task.await?;
 7916        return anyhow::Ok(true);
 7917    }
 7918    anyhow::Ok(false)
 7919}
 7920
 7921pub fn join_channel(
 7922    channel_id: ChannelId,
 7923    app_state: Arc<AppState>,
 7924    requesting_window: Option<WindowHandle<Workspace>>,
 7925    cx: &mut App,
 7926) -> Task<Result<()>> {
 7927    let active_call = ActiveCall::global(cx);
 7928    cx.spawn(async move |cx| {
 7929        let result =
 7930            join_channel_internal(channel_id, &app_state, requesting_window, &active_call, cx)
 7931                .await;
 7932
 7933        // join channel succeeded, and opened a window
 7934        if matches!(result, Ok(true)) {
 7935            return anyhow::Ok(());
 7936        }
 7937
 7938        // find an existing workspace to focus and show call controls
 7939        let mut active_window = requesting_window.or_else(|| activate_any_workspace_window(cx));
 7940        if active_window.is_none() {
 7941            // no open workspaces, make one to show the error in (blergh)
 7942            let (window_handle, _) = cx
 7943                .update(|cx| {
 7944                    Workspace::new_local(
 7945                        vec![],
 7946                        app_state.clone(),
 7947                        requesting_window,
 7948                        None,
 7949                        None,
 7950                        cx,
 7951                    )
 7952                })
 7953                .await?;
 7954
 7955            if result.is_ok() {
 7956                cx.update(|cx| {
 7957                    cx.dispatch_action(&OpenChannelNotes);
 7958                });
 7959            }
 7960
 7961            active_window = Some(window_handle);
 7962        }
 7963
 7964        if let Err(err) = result {
 7965            log::error!("failed to join channel: {}", err);
 7966            if let Some(active_window) = active_window {
 7967                active_window
 7968                    .update(cx, |_, window, cx| {
 7969                        let detail: SharedString = match err.error_code() {
 7970                            ErrorCode::SignedOut => "Please sign in to continue.".into(),
 7971                            ErrorCode::UpgradeRequired => concat!(
 7972                                "Your are running an unsupported version of Zed. ",
 7973                                "Please update to continue."
 7974                            )
 7975                            .into(),
 7976                            ErrorCode::NoSuchChannel => concat!(
 7977                                "No matching channel was found. ",
 7978                                "Please check the link and try again."
 7979                            )
 7980                            .into(),
 7981                            ErrorCode::Forbidden => concat!(
 7982                                "This channel is private, and you do not have access. ",
 7983                                "Please ask someone to add you and try again."
 7984                            )
 7985                            .into(),
 7986                            ErrorCode::Disconnected => {
 7987                                "Please check your internet connection and try again.".into()
 7988                            }
 7989                            _ => format!("{}\n\nPlease try again.", err).into(),
 7990                        };
 7991                        window.prompt(
 7992                            PromptLevel::Critical,
 7993                            "Failed to join channel",
 7994                            Some(&detail),
 7995                            &["Ok"],
 7996                            cx,
 7997                        )
 7998                    })?
 7999                    .await
 8000                    .ok();
 8001            }
 8002        }
 8003
 8004        // return ok, we showed the error to the user.
 8005        anyhow::Ok(())
 8006    })
 8007}
 8008
 8009pub async fn get_any_active_workspace(
 8010    app_state: Arc<AppState>,
 8011    mut cx: AsyncApp,
 8012) -> anyhow::Result<WindowHandle<Workspace>> {
 8013    // find an existing workspace to focus and show call controls
 8014    let active_window = activate_any_workspace_window(&mut cx);
 8015    if active_window.is_none() {
 8016        cx.update(|cx| Workspace::new_local(vec![], app_state.clone(), None, None, None, cx))
 8017            .await?;
 8018    }
 8019    activate_any_workspace_window(&mut cx).context("could not open zed")
 8020}
 8021
 8022fn activate_any_workspace_window(cx: &mut AsyncApp) -> Option<WindowHandle<Workspace>> {
 8023    cx.update(|cx| {
 8024        if let Some(workspace_window) = cx
 8025            .active_window()
 8026            .and_then(|window| window.downcast::<Workspace>())
 8027        {
 8028            return Some(workspace_window);
 8029        }
 8030
 8031        for window in cx.windows() {
 8032            if let Some(workspace_window) = window.downcast::<Workspace>() {
 8033                workspace_window
 8034                    .update(cx, |_, window, _| window.activate_window())
 8035                    .ok();
 8036                return Some(workspace_window);
 8037            }
 8038        }
 8039        None
 8040    })
 8041}
 8042
 8043pub fn local_workspace_windows(cx: &App) -> Vec<WindowHandle<Workspace>> {
 8044    cx.windows()
 8045        .into_iter()
 8046        .filter_map(|window| window.downcast::<Workspace>())
 8047        .filter(|workspace| {
 8048            workspace
 8049                .read(cx)
 8050                .is_ok_and(|workspace| workspace.project.read(cx).is_local())
 8051        })
 8052        .collect()
 8053}
 8054
 8055#[derive(Default)]
 8056pub struct OpenOptions {
 8057    pub visible: Option<OpenVisible>,
 8058    pub focus: Option<bool>,
 8059    pub open_new_workspace: Option<bool>,
 8060    pub prefer_focused_window: bool,
 8061    pub replace_window: Option<WindowHandle<Workspace>>,
 8062    pub env: Option<HashMap<String, String>>,
 8063}
 8064
 8065#[allow(clippy::type_complexity)]
 8066pub fn open_paths(
 8067    abs_paths: &[PathBuf],
 8068    app_state: Arc<AppState>,
 8069    open_options: OpenOptions,
 8070    cx: &mut App,
 8071) -> Task<
 8072    anyhow::Result<(
 8073        WindowHandle<Workspace>,
 8074        Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 8075    )>,
 8076> {
 8077    let abs_paths = abs_paths.to_vec();
 8078    let mut existing = None;
 8079    let mut best_match = None;
 8080    let mut open_visible = OpenVisible::All;
 8081    #[cfg(target_os = "windows")]
 8082    let wsl_path = abs_paths
 8083        .iter()
 8084        .find_map(|p| util::paths::WslPath::from_path(p));
 8085
 8086    cx.spawn(async move |cx| {
 8087        if open_options.open_new_workspace != Some(true) {
 8088            let all_paths = abs_paths.iter().map(|path| app_state.fs.metadata(path));
 8089            let all_metadatas = futures::future::join_all(all_paths)
 8090                .await
 8091                .into_iter()
 8092                .filter_map(|result| result.ok().flatten())
 8093                .collect::<Vec<_>>();
 8094
 8095            cx.update(|cx| {
 8096                for window in local_workspace_windows(cx) {
 8097                    if let Ok(workspace) = window.read(cx) {
 8098                        let m = workspace.project.read(cx).visibility_for_paths(
 8099                            &abs_paths,
 8100                            &all_metadatas,
 8101                            open_options.open_new_workspace == None,
 8102                            cx,
 8103                        );
 8104                        if m > best_match {
 8105                            existing = Some(window);
 8106                            best_match = m;
 8107                        } else if best_match.is_none()
 8108                            && open_options.open_new_workspace == Some(false)
 8109                        {
 8110                            existing = Some(window)
 8111                        }
 8112                    }
 8113                }
 8114            });
 8115
 8116            if open_options.open_new_workspace.is_none()
 8117                && (existing.is_none() || open_options.prefer_focused_window)
 8118                && all_metadatas.iter().all(|file| !file.is_dir)
 8119            {
 8120                cx.update(|cx| {
 8121                    if let Some(window) = cx
 8122                        .active_window()
 8123                        .and_then(|window| window.downcast::<Workspace>())
 8124                        && let Ok(workspace) = window.read(cx)
 8125                    {
 8126                        let project = workspace.project().read(cx);
 8127                        if project.is_local() && !project.is_via_collab() {
 8128                            existing = Some(window);
 8129                            open_visible = OpenVisible::None;
 8130                            return;
 8131                        }
 8132                    }
 8133                    for window in local_workspace_windows(cx) {
 8134                        if let Ok(workspace) = window.read(cx) {
 8135                            let project = workspace.project().read(cx);
 8136                            if project.is_via_collab() {
 8137                                continue;
 8138                            }
 8139                            existing = Some(window);
 8140                            open_visible = OpenVisible::None;
 8141                            break;
 8142                        }
 8143                    }
 8144                });
 8145            }
 8146        }
 8147
 8148        let result = if let Some(existing) = existing {
 8149            let open_task = existing
 8150                .update(cx, |workspace, window, cx| {
 8151                    window.activate_window();
 8152                    workspace.open_paths(
 8153                        abs_paths,
 8154                        OpenOptions {
 8155                            visible: Some(open_visible),
 8156                            ..Default::default()
 8157                        },
 8158                        None,
 8159                        window,
 8160                        cx,
 8161                    )
 8162                })?
 8163                .await;
 8164
 8165            _ = existing.update(cx, |workspace, _, cx| {
 8166                for item in open_task.iter().flatten() {
 8167                    if let Err(e) = item {
 8168                        workspace.show_error(&e, cx);
 8169                    }
 8170                }
 8171            });
 8172
 8173            Ok((existing, open_task))
 8174        } else {
 8175            cx.update(move |cx| {
 8176                Workspace::new_local(
 8177                    abs_paths,
 8178                    app_state.clone(),
 8179                    open_options.replace_window,
 8180                    open_options.env,
 8181                    None,
 8182                    cx,
 8183                )
 8184            })
 8185            .await
 8186        };
 8187
 8188        #[cfg(target_os = "windows")]
 8189        if let Some(util::paths::WslPath{distro, path}) = wsl_path
 8190            && let Ok((workspace, _)) = &result
 8191        {
 8192            workspace
 8193                .update(cx, move |workspace, _window, cx| {
 8194                    struct OpenInWsl;
 8195                    workspace.show_notification(NotificationId::unique::<OpenInWsl>(), cx, move |cx| {
 8196                        let display_path = util::markdown::MarkdownInlineCode(&path.to_string_lossy());
 8197                        let msg = format!("{display_path} is inside a WSL filesystem, some features may not work unless you open it with WSL remote");
 8198                        cx.new(move |cx| {
 8199                            MessageNotification::new(msg, cx)
 8200                                .primary_message("Open in WSL")
 8201                                .primary_icon(IconName::FolderOpen)
 8202                                .primary_on_click(move |window, cx| {
 8203                                    window.dispatch_action(Box::new(remote::OpenWslPath {
 8204                                            distro: remote::WslConnectionOptions {
 8205                                                    distro_name: distro.clone(),
 8206                                                user: None,
 8207                                            },
 8208                                            paths: vec![path.clone().into()],
 8209                                        }), cx)
 8210                                })
 8211                        })
 8212                    });
 8213                })
 8214                .unwrap();
 8215        };
 8216        result
 8217    })
 8218}
 8219
 8220pub fn open_new(
 8221    open_options: OpenOptions,
 8222    app_state: Arc<AppState>,
 8223    cx: &mut App,
 8224    init: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + 'static + Send,
 8225) -> Task<anyhow::Result<()>> {
 8226    let task = Workspace::new_local(
 8227        Vec::new(),
 8228        app_state,
 8229        None,
 8230        open_options.env,
 8231        Some(Box::new(init)),
 8232        cx,
 8233    );
 8234    cx.spawn(async move |_cx| {
 8235        let (_workspace, _opened_paths) = task.await?;
 8236        // Init callback is called synchronously during workspace creation
 8237        Ok(())
 8238    })
 8239}
 8240
 8241pub fn create_and_open_local_file(
 8242    path: &'static Path,
 8243    window: &mut Window,
 8244    cx: &mut Context<Workspace>,
 8245    default_content: impl 'static + Send + FnOnce() -> Rope,
 8246) -> Task<Result<Box<dyn ItemHandle>>> {
 8247    cx.spawn_in(window, async move |workspace, cx| {
 8248        let fs = workspace.read_with(cx, |workspace, _| workspace.app_state().fs.clone())?;
 8249        if !fs.is_file(path).await {
 8250            fs.create_file(path, Default::default()).await?;
 8251            fs.save(path, &default_content(), Default::default())
 8252                .await?;
 8253        }
 8254
 8255        workspace
 8256            .update_in(cx, |workspace, window, cx| {
 8257                workspace.with_local_or_wsl_workspace(window, cx, |workspace, window, cx| {
 8258                    let path = workspace
 8259                        .project
 8260                        .read_with(cx, |project, cx| project.try_windows_path_to_wsl(path, cx));
 8261                    cx.spawn_in(window, async move |workspace, cx| {
 8262                        let path = path.await?;
 8263                        let mut items = workspace
 8264                            .update_in(cx, |workspace, window, cx| {
 8265                                workspace.open_paths(
 8266                                    vec![path.to_path_buf()],
 8267                                    OpenOptions {
 8268                                        visible: Some(OpenVisible::None),
 8269                                        ..Default::default()
 8270                                    },
 8271                                    None,
 8272                                    window,
 8273                                    cx,
 8274                                )
 8275                            })?
 8276                            .await;
 8277                        let item = items.pop().flatten();
 8278                        item.with_context(|| format!("path {path:?} is not a file"))?
 8279                    })
 8280                })
 8281            })?
 8282            .await?
 8283            .await
 8284    })
 8285}
 8286
 8287pub fn open_remote_project_with_new_connection(
 8288    window: WindowHandle<Workspace>,
 8289    remote_connection: Arc<dyn RemoteConnection>,
 8290    cancel_rx: oneshot::Receiver<()>,
 8291    delegate: Arc<dyn RemoteClientDelegate>,
 8292    app_state: Arc<AppState>,
 8293    paths: Vec<PathBuf>,
 8294    cx: &mut App,
 8295) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 8296    cx.spawn(async move |cx| {
 8297        let (workspace_id, serialized_workspace) =
 8298            deserialize_remote_project(remote_connection.connection_options(), paths.clone(), cx)
 8299                .await?;
 8300
 8301        let session = match cx
 8302            .update(|cx| {
 8303                remote::RemoteClient::new(
 8304                    ConnectionIdentifier::Workspace(workspace_id.0),
 8305                    remote_connection,
 8306                    cancel_rx,
 8307                    delegate,
 8308                    cx,
 8309                )
 8310            })
 8311            .await?
 8312        {
 8313            Some(result) => result,
 8314            None => return Ok(Vec::new()),
 8315        };
 8316
 8317        let project = cx.update(|cx| {
 8318            project::Project::remote(
 8319                session,
 8320                app_state.client.clone(),
 8321                app_state.node_runtime.clone(),
 8322                app_state.user_store.clone(),
 8323                app_state.languages.clone(),
 8324                app_state.fs.clone(),
 8325                true,
 8326                cx,
 8327            )
 8328        });
 8329
 8330        open_remote_project_inner(
 8331            project,
 8332            paths,
 8333            workspace_id,
 8334            serialized_workspace,
 8335            app_state,
 8336            window,
 8337            cx,
 8338        )
 8339        .await
 8340    })
 8341}
 8342
 8343pub fn open_remote_project_with_existing_connection(
 8344    connection_options: RemoteConnectionOptions,
 8345    project: Entity<Project>,
 8346    paths: Vec<PathBuf>,
 8347    app_state: Arc<AppState>,
 8348    window: WindowHandle<Workspace>,
 8349    cx: &mut AsyncApp,
 8350) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 8351    cx.spawn(async move |cx| {
 8352        let (workspace_id, serialized_workspace) =
 8353            deserialize_remote_project(connection_options.clone(), paths.clone(), cx).await?;
 8354
 8355        open_remote_project_inner(
 8356            project,
 8357            paths,
 8358            workspace_id,
 8359            serialized_workspace,
 8360            app_state,
 8361            window,
 8362            cx,
 8363        )
 8364        .await
 8365    })
 8366}
 8367
 8368async fn open_remote_project_inner(
 8369    project: Entity<Project>,
 8370    paths: Vec<PathBuf>,
 8371    workspace_id: WorkspaceId,
 8372    serialized_workspace: Option<SerializedWorkspace>,
 8373    app_state: Arc<AppState>,
 8374    window: WindowHandle<Workspace>,
 8375    cx: &mut AsyncApp,
 8376) -> Result<Vec<Option<Box<dyn ItemHandle>>>> {
 8377    let toolchains = DB.toolchains(workspace_id).await?;
 8378    for (toolchain, worktree_path, path) in toolchains {
 8379        project
 8380            .update(cx, |this, cx| {
 8381                let Some(worktree_id) =
 8382                    this.find_worktree(&worktree_path, cx)
 8383                        .and_then(|(worktree, rel_path)| {
 8384                            if rel_path.is_empty() {
 8385                                Some(worktree.read(cx).id())
 8386                            } else {
 8387                                None
 8388                            }
 8389                        })
 8390                else {
 8391                    return Task::ready(None);
 8392                };
 8393
 8394                this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 8395            })
 8396            .await;
 8397    }
 8398    let mut project_paths_to_open = vec![];
 8399    let mut project_path_errors = vec![];
 8400
 8401    for path in paths {
 8402        let result = cx
 8403            .update(|cx| Workspace::project_path_for_path(project.clone(), &path, true, cx))
 8404            .await;
 8405        match result {
 8406            Ok((_, project_path)) => {
 8407                project_paths_to_open.push((path.clone(), Some(project_path)));
 8408            }
 8409            Err(error) => {
 8410                project_path_errors.push(error);
 8411            }
 8412        };
 8413    }
 8414
 8415    if project_paths_to_open.is_empty() {
 8416        return Err(project_path_errors.pop().context("no paths given")?);
 8417    }
 8418
 8419    if let Some(detach_session_task) = window
 8420        .update(cx, |_workspace, window, cx| {
 8421            cx.spawn_in(window, async move |this, cx| {
 8422                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))
 8423            })
 8424        })
 8425        .ok()
 8426    {
 8427        detach_session_task.await.ok();
 8428    }
 8429
 8430    cx.update_window(window.into(), |_, window, cx| {
 8431        window.replace_root(cx, |window, cx| {
 8432            telemetry::event!("SSH Project Opened");
 8433
 8434            let mut workspace =
 8435                Workspace::new(Some(workspace_id), project, app_state.clone(), window, cx);
 8436            workspace.update_history(cx);
 8437
 8438            if let Some(ref serialized) = serialized_workspace {
 8439                workspace.centered_layout = serialized.centered_layout;
 8440            }
 8441
 8442            workspace
 8443        });
 8444    })?;
 8445
 8446    let items = window
 8447        .update(cx, |_, window, cx| {
 8448            window.activate_window();
 8449            open_items(serialized_workspace, project_paths_to_open, window, cx)
 8450        })?
 8451        .await?;
 8452
 8453    window.update(cx, |workspace, _, cx| {
 8454        for error in project_path_errors {
 8455            if error.error_code() == proto::ErrorCode::DevServerProjectPathDoesNotExist {
 8456                if let Some(path) = error.error_tag("path") {
 8457                    workspace.show_error(&anyhow!("'{path}' does not exist"), cx)
 8458                }
 8459            } else {
 8460                workspace.show_error(&error, cx)
 8461            }
 8462        }
 8463    })?;
 8464
 8465    Ok(items.into_iter().map(|item| item?.ok()).collect())
 8466}
 8467
 8468fn deserialize_remote_project(
 8469    connection_options: RemoteConnectionOptions,
 8470    paths: Vec<PathBuf>,
 8471    cx: &AsyncApp,
 8472) -> Task<Result<(WorkspaceId, Option<SerializedWorkspace>)>> {
 8473    cx.background_spawn(async move {
 8474        let remote_connection_id = persistence::DB
 8475            .get_or_create_remote_connection(connection_options)
 8476            .await?;
 8477
 8478        let serialized_workspace =
 8479            persistence::DB.remote_workspace_for_roots(&paths, remote_connection_id);
 8480
 8481        let workspace_id = if let Some(workspace_id) =
 8482            serialized_workspace.as_ref().map(|workspace| workspace.id)
 8483        {
 8484            workspace_id
 8485        } else {
 8486            persistence::DB.next_id().await?
 8487        };
 8488
 8489        Ok((workspace_id, serialized_workspace))
 8490    })
 8491}
 8492
 8493pub fn join_in_room_project(
 8494    project_id: u64,
 8495    follow_user_id: u64,
 8496    app_state: Arc<AppState>,
 8497    cx: &mut App,
 8498) -> Task<Result<()>> {
 8499    let windows = cx.windows();
 8500    cx.spawn(async move |cx| {
 8501        let existing_workspace = windows.into_iter().find_map(|window_handle| {
 8502            window_handle
 8503                .downcast::<Workspace>()
 8504                .and_then(|window_handle| {
 8505                    window_handle
 8506                        .update(cx, |workspace, _window, cx| {
 8507                            if workspace.project().read(cx).remote_id() == Some(project_id) {
 8508                                Some(window_handle)
 8509                            } else {
 8510                                None
 8511                            }
 8512                        })
 8513                        .unwrap_or(None)
 8514                })
 8515        });
 8516
 8517        let workspace = if let Some(existing_workspace) = existing_workspace {
 8518            existing_workspace
 8519        } else {
 8520            let active_call = cx.update(|cx| ActiveCall::global(cx));
 8521            let room = active_call
 8522                .read_with(cx, |call, _| call.room().cloned())
 8523                .context("not in a call")?;
 8524            let project = room
 8525                .update(cx, |room, cx| {
 8526                    room.join_project(
 8527                        project_id,
 8528                        app_state.languages.clone(),
 8529                        app_state.fs.clone(),
 8530                        cx,
 8531                    )
 8532                })
 8533                .await?;
 8534
 8535            let window_bounds_override = window_bounds_env_override();
 8536            cx.update(|cx| {
 8537                let mut options = (app_state.build_window_options)(None, cx);
 8538                options.window_bounds = window_bounds_override.map(WindowBounds::Windowed);
 8539                cx.open_window(options, |window, cx| {
 8540                    cx.new(|cx| {
 8541                        Workspace::new(Default::default(), project, app_state.clone(), window, cx)
 8542                    })
 8543                })
 8544            })?
 8545        };
 8546
 8547        workspace.update(cx, |workspace, window, cx| {
 8548            cx.activate(true);
 8549            window.activate_window();
 8550
 8551            if let Some(room) = ActiveCall::global(cx).read(cx).room().cloned() {
 8552                let follow_peer_id = room
 8553                    .read(cx)
 8554                    .remote_participants()
 8555                    .iter()
 8556                    .find(|(_, participant)| participant.user.id == follow_user_id)
 8557                    .map(|(_, p)| p.peer_id)
 8558                    .or_else(|| {
 8559                        // If we couldn't follow the given user, follow the host instead.
 8560                        let collaborator = workspace
 8561                            .project()
 8562                            .read(cx)
 8563                            .collaborators()
 8564                            .values()
 8565                            .find(|collaborator| collaborator.is_host)?;
 8566                        Some(collaborator.peer_id)
 8567                    });
 8568
 8569                if let Some(follow_peer_id) = follow_peer_id {
 8570                    workspace.follow(follow_peer_id, window, cx);
 8571                }
 8572            }
 8573        })?;
 8574
 8575        anyhow::Ok(())
 8576    })
 8577}
 8578
 8579pub fn reload(cx: &mut App) {
 8580    let should_confirm = WorkspaceSettings::get_global(cx).confirm_quit;
 8581    let mut workspace_windows = cx
 8582        .windows()
 8583        .into_iter()
 8584        .filter_map(|window| window.downcast::<Workspace>())
 8585        .collect::<Vec<_>>();
 8586
 8587    // If multiple windows have unsaved changes, and need a save prompt,
 8588    // prompt in the active window before switching to a different window.
 8589    workspace_windows.sort_by_key(|window| window.is_active(cx) == Some(false));
 8590
 8591    let mut prompt = None;
 8592    if let (true, Some(window)) = (should_confirm, workspace_windows.first()) {
 8593        prompt = window
 8594            .update(cx, |_, window, cx| {
 8595                window.prompt(
 8596                    PromptLevel::Info,
 8597                    "Are you sure you want to restart?",
 8598                    None,
 8599                    &["Restart", "Cancel"],
 8600                    cx,
 8601                )
 8602            })
 8603            .ok();
 8604    }
 8605
 8606    cx.spawn(async move |cx| {
 8607        if let Some(prompt) = prompt {
 8608            let answer = prompt.await?;
 8609            if answer != 0 {
 8610                return anyhow::Ok(());
 8611            }
 8612        }
 8613
 8614        // If the user cancels any save prompt, then keep the app open.
 8615        for window in workspace_windows {
 8616            if let Ok(should_close) = window.update(cx, |workspace, window, cx| {
 8617                workspace.prepare_to_close(CloseIntent::Quit, window, cx)
 8618            }) && !should_close.await?
 8619            {
 8620                return anyhow::Ok(());
 8621            }
 8622        }
 8623        cx.update(|cx| cx.restart());
 8624        anyhow::Ok(())
 8625    })
 8626    .detach_and_log_err(cx);
 8627}
 8628
 8629fn parse_pixel_position_env_var(value: &str) -> Option<Point<Pixels>> {
 8630    let mut parts = value.split(',');
 8631    let x: usize = parts.next()?.parse().ok()?;
 8632    let y: usize = parts.next()?.parse().ok()?;
 8633    Some(point(px(x as f32), px(y as f32)))
 8634}
 8635
 8636fn parse_pixel_size_env_var(value: &str) -> Option<Size<Pixels>> {
 8637    let mut parts = value.split(',');
 8638    let width: usize = parts.next()?.parse().ok()?;
 8639    let height: usize = parts.next()?.parse().ok()?;
 8640    Some(size(px(width as f32), px(height as f32)))
 8641}
 8642
 8643/// Add client-side decorations (rounded corners, shadows, resize handling) when appropriate.
 8644pub fn client_side_decorations(
 8645    element: impl IntoElement,
 8646    window: &mut Window,
 8647    cx: &mut App,
 8648) -> Stateful<Div> {
 8649    const BORDER_SIZE: Pixels = px(1.0);
 8650    let decorations = window.window_decorations();
 8651
 8652    match decorations {
 8653        Decorations::Client { .. } => window.set_client_inset(theme::CLIENT_SIDE_DECORATION_SHADOW),
 8654        Decorations::Server => window.set_client_inset(px(0.0)),
 8655    }
 8656
 8657    struct GlobalResizeEdge(ResizeEdge);
 8658    impl Global for GlobalResizeEdge {}
 8659
 8660    div()
 8661        .id("window-backdrop")
 8662        .bg(transparent_black())
 8663        .map(|div| match decorations {
 8664            Decorations::Server => div,
 8665            Decorations::Client { tiling, .. } => div
 8666                .when(!(tiling.top || tiling.right), |div| {
 8667                    div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8668                })
 8669                .when(!(tiling.top || tiling.left), |div| {
 8670                    div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8671                })
 8672                .when(!(tiling.bottom || tiling.right), |div| {
 8673                    div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8674                })
 8675                .when(!(tiling.bottom || tiling.left), |div| {
 8676                    div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8677                })
 8678                .when(!tiling.top, |div| {
 8679                    div.pt(theme::CLIENT_SIDE_DECORATION_SHADOW)
 8680                })
 8681                .when(!tiling.bottom, |div| {
 8682                    div.pb(theme::CLIENT_SIDE_DECORATION_SHADOW)
 8683                })
 8684                .when(!tiling.left, |div| {
 8685                    div.pl(theme::CLIENT_SIDE_DECORATION_SHADOW)
 8686                })
 8687                .when(!tiling.right, |div| {
 8688                    div.pr(theme::CLIENT_SIDE_DECORATION_SHADOW)
 8689                })
 8690                .on_mouse_move(move |e, window, cx| {
 8691                    let size = window.window_bounds().get_bounds().size;
 8692                    let pos = e.position;
 8693
 8694                    let new_edge =
 8695                        resize_edge(pos, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling);
 8696
 8697                    let edge = cx.try_global::<GlobalResizeEdge>();
 8698                    if new_edge != edge.map(|edge| edge.0) {
 8699                        window
 8700                            .window_handle()
 8701                            .update(cx, |workspace, _, cx| {
 8702                                cx.notify(workspace.entity_id());
 8703                            })
 8704                            .ok();
 8705                    }
 8706                })
 8707                .on_mouse_down(MouseButton::Left, move |e, window, _| {
 8708                    let size = window.window_bounds().get_bounds().size;
 8709                    let pos = e.position;
 8710
 8711                    let edge = match resize_edge(
 8712                        pos,
 8713                        theme::CLIENT_SIDE_DECORATION_SHADOW,
 8714                        size,
 8715                        tiling,
 8716                    ) {
 8717                        Some(value) => value,
 8718                        None => return,
 8719                    };
 8720
 8721                    window.start_window_resize(edge);
 8722                }),
 8723        })
 8724        .size_full()
 8725        .child(
 8726            div()
 8727                .cursor(CursorStyle::Arrow)
 8728                .map(|div| match decorations {
 8729                    Decorations::Server => div,
 8730                    Decorations::Client { tiling } => div
 8731                        .border_color(cx.theme().colors().border)
 8732                        .when(!(tiling.top || tiling.right), |div| {
 8733                            div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8734                        })
 8735                        .when(!(tiling.top || tiling.left), |div| {
 8736                            div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8737                        })
 8738                        .when(!(tiling.bottom || tiling.right), |div| {
 8739                            div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8740                        })
 8741                        .when(!(tiling.bottom || tiling.left), |div| {
 8742                            div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8743                        })
 8744                        .when(!tiling.top, |div| div.border_t(BORDER_SIZE))
 8745                        .when(!tiling.bottom, |div| div.border_b(BORDER_SIZE))
 8746                        .when(!tiling.left, |div| div.border_l(BORDER_SIZE))
 8747                        .when(!tiling.right, |div| div.border_r(BORDER_SIZE))
 8748                        .when(!tiling.is_tiled(), |div| {
 8749                            div.shadow(vec![gpui::BoxShadow {
 8750                                color: Hsla {
 8751                                    h: 0.,
 8752                                    s: 0.,
 8753                                    l: 0.,
 8754                                    a: 0.4,
 8755                                },
 8756                                blur_radius: theme::CLIENT_SIDE_DECORATION_SHADOW / 2.,
 8757                                spread_radius: px(0.),
 8758                                offset: point(px(0.0), px(0.0)),
 8759                            }])
 8760                        }),
 8761                })
 8762                .on_mouse_move(|_e, _, cx| {
 8763                    cx.stop_propagation();
 8764                })
 8765                .size_full()
 8766                .child(element),
 8767        )
 8768        .map(|div| match decorations {
 8769            Decorations::Server => div,
 8770            Decorations::Client { tiling, .. } => div.child(
 8771                canvas(
 8772                    |_bounds, window, _| {
 8773                        window.insert_hitbox(
 8774                            Bounds::new(
 8775                                point(px(0.0), px(0.0)),
 8776                                window.window_bounds().get_bounds().size,
 8777                            ),
 8778                            HitboxBehavior::Normal,
 8779                        )
 8780                    },
 8781                    move |_bounds, hitbox, window, cx| {
 8782                        let mouse = window.mouse_position();
 8783                        let size = window.window_bounds().get_bounds().size;
 8784                        let Some(edge) =
 8785                            resize_edge(mouse, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling)
 8786                        else {
 8787                            return;
 8788                        };
 8789                        cx.set_global(GlobalResizeEdge(edge));
 8790                        window.set_cursor_style(
 8791                            match edge {
 8792                                ResizeEdge::Top | ResizeEdge::Bottom => CursorStyle::ResizeUpDown,
 8793                                ResizeEdge::Left | ResizeEdge::Right => {
 8794                                    CursorStyle::ResizeLeftRight
 8795                                }
 8796                                ResizeEdge::TopLeft | ResizeEdge::BottomRight => {
 8797                                    CursorStyle::ResizeUpLeftDownRight
 8798                                }
 8799                                ResizeEdge::TopRight | ResizeEdge::BottomLeft => {
 8800                                    CursorStyle::ResizeUpRightDownLeft
 8801                                }
 8802                            },
 8803                            &hitbox,
 8804                        );
 8805                    },
 8806                )
 8807                .size_full()
 8808                .absolute(),
 8809            ),
 8810        })
 8811}
 8812
 8813fn resize_edge(
 8814    pos: Point<Pixels>,
 8815    shadow_size: Pixels,
 8816    window_size: Size<Pixels>,
 8817    tiling: Tiling,
 8818) -> Option<ResizeEdge> {
 8819    let bounds = Bounds::new(Point::default(), window_size).inset(shadow_size * 1.5);
 8820    if bounds.contains(&pos) {
 8821        return None;
 8822    }
 8823
 8824    let corner_size = size(shadow_size * 1.5, shadow_size * 1.5);
 8825    let top_left_bounds = Bounds::new(Point::new(px(0.), px(0.)), corner_size);
 8826    if !tiling.top && top_left_bounds.contains(&pos) {
 8827        return Some(ResizeEdge::TopLeft);
 8828    }
 8829
 8830    let top_right_bounds = Bounds::new(
 8831        Point::new(window_size.width - corner_size.width, px(0.)),
 8832        corner_size,
 8833    );
 8834    if !tiling.top && top_right_bounds.contains(&pos) {
 8835        return Some(ResizeEdge::TopRight);
 8836    }
 8837
 8838    let bottom_left_bounds = Bounds::new(
 8839        Point::new(px(0.), window_size.height - corner_size.height),
 8840        corner_size,
 8841    );
 8842    if !tiling.bottom && bottom_left_bounds.contains(&pos) {
 8843        return Some(ResizeEdge::BottomLeft);
 8844    }
 8845
 8846    let bottom_right_bounds = Bounds::new(
 8847        Point::new(
 8848            window_size.width - corner_size.width,
 8849            window_size.height - corner_size.height,
 8850        ),
 8851        corner_size,
 8852    );
 8853    if !tiling.bottom && bottom_right_bounds.contains(&pos) {
 8854        return Some(ResizeEdge::BottomRight);
 8855    }
 8856
 8857    if !tiling.top && pos.y < shadow_size {
 8858        Some(ResizeEdge::Top)
 8859    } else if !tiling.bottom && pos.y > window_size.height - shadow_size {
 8860        Some(ResizeEdge::Bottom)
 8861    } else if !tiling.left && pos.x < shadow_size {
 8862        Some(ResizeEdge::Left)
 8863    } else if !tiling.right && pos.x > window_size.width - shadow_size {
 8864        Some(ResizeEdge::Right)
 8865    } else {
 8866        None
 8867    }
 8868}
 8869
 8870fn join_pane_into_active(
 8871    active_pane: &Entity<Pane>,
 8872    pane: &Entity<Pane>,
 8873    window: &mut Window,
 8874    cx: &mut App,
 8875) {
 8876    if pane == active_pane {
 8877    } else if pane.read(cx).items_len() == 0 {
 8878        pane.update(cx, |_, cx| {
 8879            cx.emit(pane::Event::Remove {
 8880                focus_on_pane: None,
 8881            });
 8882        })
 8883    } else {
 8884        move_all_items(pane, active_pane, window, cx);
 8885    }
 8886}
 8887
 8888fn move_all_items(
 8889    from_pane: &Entity<Pane>,
 8890    to_pane: &Entity<Pane>,
 8891    window: &mut Window,
 8892    cx: &mut App,
 8893) {
 8894    let destination_is_different = from_pane != to_pane;
 8895    let mut moved_items = 0;
 8896    for (item_ix, item_handle) in from_pane
 8897        .read(cx)
 8898        .items()
 8899        .enumerate()
 8900        .map(|(ix, item)| (ix, item.clone()))
 8901        .collect::<Vec<_>>()
 8902    {
 8903        let ix = item_ix - moved_items;
 8904        if destination_is_different {
 8905            // Close item from previous pane
 8906            from_pane.update(cx, |source, cx| {
 8907                source.remove_item_and_focus_on_pane(ix, false, to_pane.clone(), window, cx);
 8908            });
 8909            moved_items += 1;
 8910        }
 8911
 8912        // This automatically removes duplicate items in the pane
 8913        to_pane.update(cx, |destination, cx| {
 8914            destination.add_item(item_handle, true, true, None, window, cx);
 8915            window.focus(&destination.focus_handle(cx), cx)
 8916        });
 8917    }
 8918}
 8919
 8920pub fn move_item(
 8921    source: &Entity<Pane>,
 8922    destination: &Entity<Pane>,
 8923    item_id_to_move: EntityId,
 8924    destination_index: usize,
 8925    activate: bool,
 8926    window: &mut Window,
 8927    cx: &mut App,
 8928) {
 8929    let Some((item_ix, item_handle)) = source
 8930        .read(cx)
 8931        .items()
 8932        .enumerate()
 8933        .find(|(_, item_handle)| item_handle.item_id() == item_id_to_move)
 8934        .map(|(ix, item)| (ix, item.clone()))
 8935    else {
 8936        // Tab was closed during drag
 8937        return;
 8938    };
 8939
 8940    if source != destination {
 8941        // Close item from previous pane
 8942        source.update(cx, |source, cx| {
 8943            source.remove_item_and_focus_on_pane(item_ix, false, destination.clone(), window, cx);
 8944        });
 8945    }
 8946
 8947    // This automatically removes duplicate items in the pane
 8948    destination.update(cx, |destination, cx| {
 8949        destination.add_item_inner(
 8950            item_handle,
 8951            activate,
 8952            activate,
 8953            activate,
 8954            Some(destination_index),
 8955            window,
 8956            cx,
 8957        );
 8958        if activate {
 8959            window.focus(&destination.focus_handle(cx), cx)
 8960        }
 8961    });
 8962}
 8963
 8964pub fn move_active_item(
 8965    source: &Entity<Pane>,
 8966    destination: &Entity<Pane>,
 8967    focus_destination: bool,
 8968    close_if_empty: bool,
 8969    window: &mut Window,
 8970    cx: &mut App,
 8971) {
 8972    if source == destination {
 8973        return;
 8974    }
 8975    let Some(active_item) = source.read(cx).active_item() else {
 8976        return;
 8977    };
 8978    source.update(cx, |source_pane, cx| {
 8979        let item_id = active_item.item_id();
 8980        source_pane.remove_item(item_id, false, close_if_empty, window, cx);
 8981        destination.update(cx, |target_pane, cx| {
 8982            target_pane.add_item(
 8983                active_item,
 8984                focus_destination,
 8985                focus_destination,
 8986                Some(target_pane.items_len()),
 8987                window,
 8988                cx,
 8989            );
 8990        });
 8991    });
 8992}
 8993
 8994pub fn clone_active_item(
 8995    workspace_id: Option<WorkspaceId>,
 8996    source: &Entity<Pane>,
 8997    destination: &Entity<Pane>,
 8998    focus_destination: bool,
 8999    window: &mut Window,
 9000    cx: &mut App,
 9001) {
 9002    if source == destination {
 9003        return;
 9004    }
 9005    let Some(active_item) = source.read(cx).active_item() else {
 9006        return;
 9007    };
 9008    if !active_item.can_split(cx) {
 9009        return;
 9010    }
 9011    let destination = destination.downgrade();
 9012    let task = active_item.clone_on_split(workspace_id, window, cx);
 9013    window
 9014        .spawn(cx, async move |cx| {
 9015            let Some(clone) = task.await else {
 9016                return;
 9017            };
 9018            destination
 9019                .update_in(cx, |target_pane, window, cx| {
 9020                    target_pane.add_item(
 9021                        clone,
 9022                        focus_destination,
 9023                        focus_destination,
 9024                        Some(target_pane.items_len()),
 9025                        window,
 9026                        cx,
 9027                    );
 9028                })
 9029                .log_err();
 9030        })
 9031        .detach();
 9032}
 9033
 9034#[derive(Debug)]
 9035pub struct WorkspacePosition {
 9036    pub window_bounds: Option<WindowBounds>,
 9037    pub display: Option<Uuid>,
 9038    pub centered_layout: bool,
 9039}
 9040
 9041pub fn remote_workspace_position_from_db(
 9042    connection_options: RemoteConnectionOptions,
 9043    paths_to_open: &[PathBuf],
 9044    cx: &App,
 9045) -> Task<Result<WorkspacePosition>> {
 9046    let paths = paths_to_open.to_vec();
 9047
 9048    cx.background_spawn(async move {
 9049        let remote_connection_id = persistence::DB
 9050            .get_or_create_remote_connection(connection_options)
 9051            .await
 9052            .context("fetching serialized ssh project")?;
 9053        let serialized_workspace =
 9054            persistence::DB.remote_workspace_for_roots(&paths, remote_connection_id);
 9055
 9056        let (window_bounds, display) = if let Some(bounds) = window_bounds_env_override() {
 9057            (Some(WindowBounds::Windowed(bounds)), None)
 9058        } else {
 9059            let restorable_bounds = serialized_workspace
 9060                .as_ref()
 9061                .and_then(|workspace| {
 9062                    Some((workspace.display?, workspace.window_bounds.map(|b| b.0)?))
 9063                })
 9064                .or_else(|| persistence::read_default_window_bounds());
 9065
 9066            if let Some((serialized_display, serialized_bounds)) = restorable_bounds {
 9067                (Some(serialized_bounds), Some(serialized_display))
 9068            } else {
 9069                (None, None)
 9070            }
 9071        };
 9072
 9073        let centered_layout = serialized_workspace
 9074            .as_ref()
 9075            .map(|w| w.centered_layout)
 9076            .unwrap_or(false);
 9077
 9078        Ok(WorkspacePosition {
 9079            window_bounds,
 9080            display,
 9081            centered_layout,
 9082        })
 9083    })
 9084}
 9085
 9086pub fn with_active_or_new_workspace(
 9087    cx: &mut App,
 9088    f: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send + 'static,
 9089) {
 9090    match cx.active_window().and_then(|w| w.downcast::<Workspace>()) {
 9091        Some(workspace) => {
 9092            cx.defer(move |cx| {
 9093                workspace
 9094                    .update(cx, |workspace, window, cx| f(workspace, window, cx))
 9095                    .log_err();
 9096            });
 9097        }
 9098        None => {
 9099            let app_state = AppState::global(cx);
 9100            if let Some(app_state) = app_state.upgrade() {
 9101                open_new(
 9102                    OpenOptions::default(),
 9103                    app_state,
 9104                    cx,
 9105                    move |workspace, window, cx| f(workspace, window, cx),
 9106                )
 9107                .detach_and_log_err(cx);
 9108            }
 9109        }
 9110    }
 9111}
 9112
 9113#[cfg(test)]
 9114mod tests {
 9115    use std::{cell::RefCell, rc::Rc};
 9116
 9117    use super::*;
 9118    use crate::{
 9119        dock::{PanelEvent, test::TestPanel},
 9120        item::{
 9121            ItemBufferKind, ItemEvent,
 9122            test::{TestItem, TestProjectItem},
 9123        },
 9124    };
 9125    use fs::FakeFs;
 9126    use gpui::{
 9127        DismissEvent, Empty, EventEmitter, FocusHandle, Focusable, Render, TestAppContext,
 9128        UpdateGlobal, VisualTestContext, px,
 9129    };
 9130    use project::{Project, ProjectEntryId};
 9131    use serde_json::json;
 9132    use settings::SettingsStore;
 9133    use util::rel_path::rel_path;
 9134
 9135    #[gpui::test]
 9136    async fn test_tab_disambiguation(cx: &mut TestAppContext) {
 9137        init_test(cx);
 9138
 9139        let fs = FakeFs::new(cx.executor());
 9140        let project = Project::test(fs, [], cx).await;
 9141        let (workspace, cx) =
 9142            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 9143
 9144        // Adding an item with no ambiguity renders the tab without detail.
 9145        let item1 = cx.new(|cx| {
 9146            let mut item = TestItem::new(cx);
 9147            item.tab_descriptions = Some(vec!["c", "b1/c", "a/b1/c"]);
 9148            item
 9149        });
 9150        workspace.update_in(cx, |workspace, window, cx| {
 9151            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 9152        });
 9153        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(0)));
 9154
 9155        // Adding an item that creates ambiguity increases the level of detail on
 9156        // both tabs.
 9157        let item2 = cx.new_window_entity(|_window, cx| {
 9158            let mut item = TestItem::new(cx);
 9159            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 9160            item
 9161        });
 9162        workspace.update_in(cx, |workspace, window, cx| {
 9163            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 9164        });
 9165        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 9166        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 9167
 9168        // Adding an item that creates ambiguity increases the level of detail only
 9169        // on the ambiguous tabs. In this case, the ambiguity can't be resolved so
 9170        // we stop at the highest detail available.
 9171        let item3 = cx.new(|cx| {
 9172            let mut item = TestItem::new(cx);
 9173            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 9174            item
 9175        });
 9176        workspace.update_in(cx, |workspace, window, cx| {
 9177            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 9178        });
 9179        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 9180        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 9181        item3.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 9182    }
 9183
 9184    #[gpui::test]
 9185    async fn test_tracking_active_path(cx: &mut TestAppContext) {
 9186        init_test(cx);
 9187
 9188        let fs = FakeFs::new(cx.executor());
 9189        fs.insert_tree(
 9190            "/root1",
 9191            json!({
 9192                "one.txt": "",
 9193                "two.txt": "",
 9194            }),
 9195        )
 9196        .await;
 9197        fs.insert_tree(
 9198            "/root2",
 9199            json!({
 9200                "three.txt": "",
 9201            }),
 9202        )
 9203        .await;
 9204
 9205        let project = Project::test(fs, ["root1".as_ref()], cx).await;
 9206        let (workspace, cx) =
 9207            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 9208        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9209        let worktree_id = project.update(cx, |project, cx| {
 9210            project.worktrees(cx).next().unwrap().read(cx).id()
 9211        });
 9212
 9213        let item1 = cx.new(|cx| {
 9214            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
 9215        });
 9216        let item2 = cx.new(|cx| {
 9217            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "two.txt", cx)])
 9218        });
 9219
 9220        // Add an item to an empty pane
 9221        workspace.update_in(cx, |workspace, window, cx| {
 9222            workspace.add_item_to_active_pane(Box::new(item1), None, true, window, cx)
 9223        });
 9224        project.update(cx, |project, cx| {
 9225            assert_eq!(
 9226                project.active_entry(),
 9227                project
 9228                    .entry_for_path(&(worktree_id, rel_path("one.txt")).into(), cx)
 9229                    .map(|e| e.id)
 9230            );
 9231        });
 9232        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 9233
 9234        // Add a second item to a non-empty pane
 9235        workspace.update_in(cx, |workspace, window, cx| {
 9236            workspace.add_item_to_active_pane(Box::new(item2), None, true, window, cx)
 9237        });
 9238        assert_eq!(cx.window_title().as_deref(), Some("root1 — two.txt"));
 9239        project.update(cx, |project, cx| {
 9240            assert_eq!(
 9241                project.active_entry(),
 9242                project
 9243                    .entry_for_path(&(worktree_id, rel_path("two.txt")).into(), cx)
 9244                    .map(|e| e.id)
 9245            );
 9246        });
 9247
 9248        // Close the active item
 9249        pane.update_in(cx, |pane, window, cx| {
 9250            pane.close_active_item(&Default::default(), window, cx)
 9251        })
 9252        .await
 9253        .unwrap();
 9254        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 9255        project.update(cx, |project, cx| {
 9256            assert_eq!(
 9257                project.active_entry(),
 9258                project
 9259                    .entry_for_path(&(worktree_id, rel_path("one.txt")).into(), cx)
 9260                    .map(|e| e.id)
 9261            );
 9262        });
 9263
 9264        // Add a project folder
 9265        project
 9266            .update(cx, |project, cx| {
 9267                project.find_or_create_worktree("root2", true, cx)
 9268            })
 9269            .await
 9270            .unwrap();
 9271        assert_eq!(cx.window_title().as_deref(), Some("root1, root2 — one.txt"));
 9272
 9273        // Remove a project folder
 9274        project.update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
 9275        assert_eq!(cx.window_title().as_deref(), Some("root2 — one.txt"));
 9276    }
 9277
 9278    #[gpui::test]
 9279    async fn test_close_window(cx: &mut TestAppContext) {
 9280        init_test(cx);
 9281
 9282        let fs = FakeFs::new(cx.executor());
 9283        fs.insert_tree("/root", json!({ "one": "" })).await;
 9284
 9285        let project = Project::test(fs, ["root".as_ref()], cx).await;
 9286        let (workspace, cx) =
 9287            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 9288
 9289        // When there are no dirty items, there's nothing to do.
 9290        let item1 = cx.new(TestItem::new);
 9291        workspace.update_in(cx, |w, window, cx| {
 9292            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx)
 9293        });
 9294        let task = workspace.update_in(cx, |w, window, cx| {
 9295            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 9296        });
 9297        assert!(task.await.unwrap());
 9298
 9299        // When there are dirty untitled items, prompt to save each one. If the user
 9300        // cancels any prompt, then abort.
 9301        let item2 = cx.new(|cx| TestItem::new(cx).with_dirty(true));
 9302        let item3 = cx.new(|cx| {
 9303            TestItem::new(cx)
 9304                .with_dirty(true)
 9305                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 9306        });
 9307        workspace.update_in(cx, |w, window, cx| {
 9308            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 9309            w.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 9310        });
 9311        let task = workspace.update_in(cx, |w, window, cx| {
 9312            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 9313        });
 9314        cx.executor().run_until_parked();
 9315        cx.simulate_prompt_answer("Cancel"); // cancel save all
 9316        cx.executor().run_until_parked();
 9317        assert!(!cx.has_pending_prompt());
 9318        assert!(!task.await.unwrap());
 9319    }
 9320
 9321    #[gpui::test]
 9322    async fn test_close_window_with_serializable_items(cx: &mut TestAppContext) {
 9323        init_test(cx);
 9324
 9325        // Register TestItem as a serializable item
 9326        cx.update(|cx| {
 9327            register_serializable_item::<TestItem>(cx);
 9328        });
 9329
 9330        let fs = FakeFs::new(cx.executor());
 9331        fs.insert_tree("/root", json!({ "one": "" })).await;
 9332
 9333        let project = Project::test(fs, ["root".as_ref()], cx).await;
 9334        let (workspace, cx) =
 9335            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 9336
 9337        // When there are dirty untitled items, but they can serialize, then there is no prompt.
 9338        let item1 = cx.new(|cx| {
 9339            TestItem::new(cx)
 9340                .with_dirty(true)
 9341                .with_serialize(|| Some(Task::ready(Ok(()))))
 9342        });
 9343        let item2 = cx.new(|cx| {
 9344            TestItem::new(cx)
 9345                .with_dirty(true)
 9346                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 9347                .with_serialize(|| Some(Task::ready(Ok(()))))
 9348        });
 9349        workspace.update_in(cx, |w, window, cx| {
 9350            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 9351            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 9352        });
 9353        let task = workspace.update_in(cx, |w, window, cx| {
 9354            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 9355        });
 9356        assert!(task.await.unwrap());
 9357    }
 9358
 9359    #[gpui::test]
 9360    async fn test_close_pane_items(cx: &mut TestAppContext) {
 9361        init_test(cx);
 9362
 9363        let fs = FakeFs::new(cx.executor());
 9364
 9365        let project = Project::test(fs, None, cx).await;
 9366        let (workspace, cx) =
 9367            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9368
 9369        let item1 = cx.new(|cx| {
 9370            TestItem::new(cx)
 9371                .with_dirty(true)
 9372                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9373        });
 9374        let item2 = cx.new(|cx| {
 9375            TestItem::new(cx)
 9376                .with_dirty(true)
 9377                .with_conflict(true)
 9378                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9379        });
 9380        let item3 = cx.new(|cx| {
 9381            TestItem::new(cx)
 9382                .with_dirty(true)
 9383                .with_conflict(true)
 9384                .with_project_items(&[dirty_project_item(3, "3.txt", cx)])
 9385        });
 9386        let item4 = cx.new(|cx| {
 9387            TestItem::new(cx).with_dirty(true).with_project_items(&[{
 9388                let project_item = TestProjectItem::new_untitled(cx);
 9389                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 9390                project_item
 9391            }])
 9392        });
 9393        let pane = workspace.update_in(cx, |workspace, window, cx| {
 9394            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 9395            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 9396            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 9397            workspace.add_item_to_active_pane(Box::new(item4.clone()), None, true, window, cx);
 9398            workspace.active_pane().clone()
 9399        });
 9400
 9401        let close_items = pane.update_in(cx, |pane, window, cx| {
 9402            pane.activate_item(1, true, true, window, cx);
 9403            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 9404            let item1_id = item1.item_id();
 9405            let item3_id = item3.item_id();
 9406            let item4_id = item4.item_id();
 9407            pane.close_items(window, cx, SaveIntent::Close, move |id| {
 9408                [item1_id, item3_id, item4_id].contains(&id)
 9409            })
 9410        });
 9411        cx.executor().run_until_parked();
 9412
 9413        assert!(cx.has_pending_prompt());
 9414        cx.simulate_prompt_answer("Save all");
 9415
 9416        cx.executor().run_until_parked();
 9417
 9418        // Item 1 is saved. There's a prompt to save item 3.
 9419        pane.update(cx, |pane, cx| {
 9420            assert_eq!(item1.read(cx).save_count, 1);
 9421            assert_eq!(item1.read(cx).save_as_count, 0);
 9422            assert_eq!(item1.read(cx).reload_count, 0);
 9423            assert_eq!(pane.items_len(), 3);
 9424            assert_eq!(pane.active_item().unwrap().item_id(), item3.item_id());
 9425        });
 9426        assert!(cx.has_pending_prompt());
 9427
 9428        // Cancel saving item 3.
 9429        cx.simulate_prompt_answer("Discard");
 9430        cx.executor().run_until_parked();
 9431
 9432        // Item 3 is reloaded. There's a prompt to save item 4.
 9433        pane.update(cx, |pane, cx| {
 9434            assert_eq!(item3.read(cx).save_count, 0);
 9435            assert_eq!(item3.read(cx).save_as_count, 0);
 9436            assert_eq!(item3.read(cx).reload_count, 1);
 9437            assert_eq!(pane.items_len(), 2);
 9438            assert_eq!(pane.active_item().unwrap().item_id(), item4.item_id());
 9439        });
 9440
 9441        // There's a prompt for a path for item 4.
 9442        cx.simulate_new_path_selection(|_| Some(Default::default()));
 9443        close_items.await.unwrap();
 9444
 9445        // The requested items are closed.
 9446        pane.update(cx, |pane, cx| {
 9447            assert_eq!(item4.read(cx).save_count, 0);
 9448            assert_eq!(item4.read(cx).save_as_count, 1);
 9449            assert_eq!(item4.read(cx).reload_count, 0);
 9450            assert_eq!(pane.items_len(), 1);
 9451            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 9452        });
 9453    }
 9454
 9455    #[gpui::test]
 9456    async fn test_prompting_to_save_only_on_last_item_for_entry(cx: &mut TestAppContext) {
 9457        init_test(cx);
 9458
 9459        let fs = FakeFs::new(cx.executor());
 9460        let project = Project::test(fs, [], cx).await;
 9461        let (workspace, cx) =
 9462            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9463
 9464        // Create several workspace items with single project entries, and two
 9465        // workspace items with multiple project entries.
 9466        let single_entry_items = (0..=4)
 9467            .map(|project_entry_id| {
 9468                cx.new(|cx| {
 9469                    TestItem::new(cx)
 9470                        .with_dirty(true)
 9471                        .with_project_items(&[dirty_project_item(
 9472                            project_entry_id,
 9473                            &format!("{project_entry_id}.txt"),
 9474                            cx,
 9475                        )])
 9476                })
 9477            })
 9478            .collect::<Vec<_>>();
 9479        let item_2_3 = cx.new(|cx| {
 9480            TestItem::new(cx)
 9481                .with_dirty(true)
 9482                .with_buffer_kind(ItemBufferKind::Multibuffer)
 9483                .with_project_items(&[
 9484                    single_entry_items[2].read(cx).project_items[0].clone(),
 9485                    single_entry_items[3].read(cx).project_items[0].clone(),
 9486                ])
 9487        });
 9488        let item_3_4 = cx.new(|cx| {
 9489            TestItem::new(cx)
 9490                .with_dirty(true)
 9491                .with_buffer_kind(ItemBufferKind::Multibuffer)
 9492                .with_project_items(&[
 9493                    single_entry_items[3].read(cx).project_items[0].clone(),
 9494                    single_entry_items[4].read(cx).project_items[0].clone(),
 9495                ])
 9496        });
 9497
 9498        // Create two panes that contain the following project entries:
 9499        //   left pane:
 9500        //     multi-entry items:   (2, 3)
 9501        //     single-entry items:  0, 2, 3, 4
 9502        //   right pane:
 9503        //     single-entry items:  4, 1
 9504        //     multi-entry items:   (3, 4)
 9505        let (left_pane, right_pane) = workspace.update_in(cx, |workspace, window, cx| {
 9506            let left_pane = workspace.active_pane().clone();
 9507            workspace.add_item_to_active_pane(Box::new(item_2_3.clone()), None, true, window, cx);
 9508            workspace.add_item_to_active_pane(
 9509                single_entry_items[0].boxed_clone(),
 9510                None,
 9511                true,
 9512                window,
 9513                cx,
 9514            );
 9515            workspace.add_item_to_active_pane(
 9516                single_entry_items[2].boxed_clone(),
 9517                None,
 9518                true,
 9519                window,
 9520                cx,
 9521            );
 9522            workspace.add_item_to_active_pane(
 9523                single_entry_items[3].boxed_clone(),
 9524                None,
 9525                true,
 9526                window,
 9527                cx,
 9528            );
 9529            workspace.add_item_to_active_pane(
 9530                single_entry_items[4].boxed_clone(),
 9531                None,
 9532                true,
 9533                window,
 9534                cx,
 9535            );
 9536
 9537            let right_pane =
 9538                workspace.split_and_clone(left_pane.clone(), SplitDirection::Right, window, cx);
 9539
 9540            let boxed_clone = single_entry_items[1].boxed_clone();
 9541            let right_pane = window.spawn(cx, async move |cx| {
 9542                right_pane.await.inspect(|right_pane| {
 9543                    right_pane
 9544                        .update_in(cx, |pane, window, cx| {
 9545                            pane.add_item(boxed_clone, true, true, None, window, cx);
 9546                            pane.add_item(Box::new(item_3_4.clone()), true, true, None, window, cx);
 9547                        })
 9548                        .unwrap();
 9549                })
 9550            });
 9551
 9552            (left_pane, right_pane)
 9553        });
 9554        let right_pane = right_pane.await.unwrap();
 9555        cx.focus(&right_pane);
 9556
 9557        let close = right_pane.update_in(cx, |pane, window, cx| {
 9558            pane.close_all_items(&CloseAllItems::default(), window, cx)
 9559                .unwrap()
 9560        });
 9561        cx.executor().run_until_parked();
 9562
 9563        let msg = cx.pending_prompt().unwrap().0;
 9564        assert!(msg.contains("1.txt"));
 9565        assert!(!msg.contains("2.txt"));
 9566        assert!(!msg.contains("3.txt"));
 9567        assert!(!msg.contains("4.txt"));
 9568
 9569        // With best-effort close, cancelling item 1 keeps it open but items 4
 9570        // and (3,4) still close since their entries exist in left pane.
 9571        cx.simulate_prompt_answer("Cancel");
 9572        close.await;
 9573
 9574        right_pane.read_with(cx, |pane, _| {
 9575            assert_eq!(pane.items_len(), 1);
 9576        });
 9577
 9578        // Remove item 3 from left pane, making (2,3) the only item with entry 3.
 9579        left_pane
 9580            .update_in(cx, |left_pane, window, cx| {
 9581                left_pane.close_item_by_id(
 9582                    single_entry_items[3].entity_id(),
 9583                    SaveIntent::Skip,
 9584                    window,
 9585                    cx,
 9586                )
 9587            })
 9588            .await
 9589            .unwrap();
 9590
 9591        let close = left_pane.update_in(cx, |pane, window, cx| {
 9592            pane.close_all_items(&CloseAllItems::default(), window, cx)
 9593                .unwrap()
 9594        });
 9595        cx.executor().run_until_parked();
 9596
 9597        let details = cx.pending_prompt().unwrap().1;
 9598        assert!(details.contains("0.txt"));
 9599        assert!(details.contains("3.txt"));
 9600        assert!(details.contains("4.txt"));
 9601        // Ideally 2.txt wouldn't appear since entry 2 still exists in item 2.
 9602        // But we can only save whole items, so saving (2,3) for entry 3 includes 2.
 9603        // assert!(!details.contains("2.txt"));
 9604
 9605        cx.simulate_prompt_answer("Save all");
 9606        cx.executor().run_until_parked();
 9607        close.await;
 9608
 9609        left_pane.read_with(cx, |pane, _| {
 9610            assert_eq!(pane.items_len(), 0);
 9611        });
 9612    }
 9613
 9614    #[gpui::test]
 9615    async fn test_autosave(cx: &mut gpui::TestAppContext) {
 9616        init_test(cx);
 9617
 9618        let fs = FakeFs::new(cx.executor());
 9619        let project = Project::test(fs, [], cx).await;
 9620        let (workspace, cx) =
 9621            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9622        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9623
 9624        let item = cx.new(|cx| {
 9625            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 9626        });
 9627        let item_id = item.entity_id();
 9628        workspace.update_in(cx, |workspace, window, cx| {
 9629            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 9630        });
 9631
 9632        // Autosave on window change.
 9633        item.update(cx, |item, cx| {
 9634            SettingsStore::update_global(cx, |settings, cx| {
 9635                settings.update_user_settings(cx, |settings| {
 9636                    settings.workspace.autosave = Some(AutosaveSetting::OnWindowChange);
 9637                })
 9638            });
 9639            item.is_dirty = true;
 9640        });
 9641
 9642        // Deactivating the window saves the file.
 9643        cx.deactivate_window();
 9644        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 9645
 9646        // Re-activating the window doesn't save the file.
 9647        cx.update(|window, _| window.activate_window());
 9648        cx.executor().run_until_parked();
 9649        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 9650
 9651        // Autosave on focus change.
 9652        item.update_in(cx, |item, window, cx| {
 9653            cx.focus_self(window);
 9654            SettingsStore::update_global(cx, |settings, cx| {
 9655                settings.update_user_settings(cx, |settings| {
 9656                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
 9657                })
 9658            });
 9659            item.is_dirty = true;
 9660        });
 9661        // Blurring the item saves the file.
 9662        item.update_in(cx, |_, window, _| window.blur());
 9663        cx.executor().run_until_parked();
 9664        item.read_with(cx, |item, _| assert_eq!(item.save_count, 2));
 9665
 9666        // Deactivating the window still saves the file.
 9667        item.update_in(cx, |item, window, cx| {
 9668            cx.focus_self(window);
 9669            item.is_dirty = true;
 9670        });
 9671        cx.deactivate_window();
 9672        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
 9673
 9674        // Autosave after delay.
 9675        item.update(cx, |item, cx| {
 9676            SettingsStore::update_global(cx, |settings, cx| {
 9677                settings.update_user_settings(cx, |settings| {
 9678                    settings.workspace.autosave = Some(AutosaveSetting::AfterDelay {
 9679                        milliseconds: 500.into(),
 9680                    });
 9681                })
 9682            });
 9683            item.is_dirty = true;
 9684            cx.emit(ItemEvent::Edit);
 9685        });
 9686
 9687        // Delay hasn't fully expired, so the file is still dirty and unsaved.
 9688        cx.executor().advance_clock(Duration::from_millis(250));
 9689        item.read_with(cx, |item, _| assert_eq!(item.save_count, 3));
 9690
 9691        // After delay expires, the file is saved.
 9692        cx.executor().advance_clock(Duration::from_millis(250));
 9693        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
 9694
 9695        // Autosave after delay, should save earlier than delay if tab is closed
 9696        item.update(cx, |item, cx| {
 9697            item.is_dirty = true;
 9698            cx.emit(ItemEvent::Edit);
 9699        });
 9700        cx.executor().advance_clock(Duration::from_millis(250));
 9701        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
 9702
 9703        // // Ensure auto save with delay saves the item on close, even if the timer hasn't yet run out.
 9704        pane.update_in(cx, |pane, window, cx| {
 9705            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 9706        })
 9707        .await
 9708        .unwrap();
 9709        assert!(!cx.has_pending_prompt());
 9710        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 9711
 9712        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
 9713        workspace.update_in(cx, |workspace, window, cx| {
 9714            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 9715        });
 9716        item.update_in(cx, |item, _window, cx| {
 9717            item.is_dirty = true;
 9718            for project_item in &mut item.project_items {
 9719                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 9720            }
 9721        });
 9722        cx.run_until_parked();
 9723        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 9724
 9725        // Autosave on focus change, ensuring closing the tab counts as such.
 9726        item.update(cx, |item, cx| {
 9727            SettingsStore::update_global(cx, |settings, cx| {
 9728                settings.update_user_settings(cx, |settings| {
 9729                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
 9730                })
 9731            });
 9732            item.is_dirty = true;
 9733            for project_item in &mut item.project_items {
 9734                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 9735            }
 9736        });
 9737
 9738        pane.update_in(cx, |pane, window, cx| {
 9739            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 9740        })
 9741        .await
 9742        .unwrap();
 9743        assert!(!cx.has_pending_prompt());
 9744        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
 9745
 9746        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
 9747        workspace.update_in(cx, |workspace, window, cx| {
 9748            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 9749        });
 9750        item.update_in(cx, |item, window, cx| {
 9751            item.project_items[0].update(cx, |item, _| {
 9752                item.entry_id = None;
 9753            });
 9754            item.is_dirty = true;
 9755            window.blur();
 9756        });
 9757        cx.run_until_parked();
 9758        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
 9759
 9760        // Ensure autosave is prevented for deleted files also when closing the buffer.
 9761        let _close_items = pane.update_in(cx, |pane, window, cx| {
 9762            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 9763        });
 9764        cx.run_until_parked();
 9765        assert!(cx.has_pending_prompt());
 9766        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
 9767    }
 9768
 9769    #[gpui::test]
 9770    async fn test_pane_navigation(cx: &mut gpui::TestAppContext) {
 9771        init_test(cx);
 9772
 9773        let fs = FakeFs::new(cx.executor());
 9774
 9775        let project = Project::test(fs, [], cx).await;
 9776        let (workspace, cx) =
 9777            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9778
 9779        let item = cx.new(|cx| {
 9780            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 9781        });
 9782        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9783        let toolbar = pane.read_with(cx, |pane, _| pane.toolbar().clone());
 9784        let toolbar_notify_count = Rc::new(RefCell::new(0));
 9785
 9786        workspace.update_in(cx, |workspace, window, cx| {
 9787            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 9788            let toolbar_notification_count = toolbar_notify_count.clone();
 9789            cx.observe_in(&toolbar, window, move |_, _, _, _| {
 9790                *toolbar_notification_count.borrow_mut() += 1
 9791            })
 9792            .detach();
 9793        });
 9794
 9795        pane.read_with(cx, |pane, _| {
 9796            assert!(!pane.can_navigate_backward());
 9797            assert!(!pane.can_navigate_forward());
 9798        });
 9799
 9800        item.update_in(cx, |item, _, cx| {
 9801            item.set_state("one".to_string(), cx);
 9802        });
 9803
 9804        // Toolbar must be notified to re-render the navigation buttons
 9805        assert_eq!(*toolbar_notify_count.borrow(), 1);
 9806
 9807        pane.read_with(cx, |pane, _| {
 9808            assert!(pane.can_navigate_backward());
 9809            assert!(!pane.can_navigate_forward());
 9810        });
 9811
 9812        workspace
 9813            .update_in(cx, |workspace, window, cx| {
 9814                workspace.go_back(pane.downgrade(), window, cx)
 9815            })
 9816            .await
 9817            .unwrap();
 9818
 9819        assert_eq!(*toolbar_notify_count.borrow(), 2);
 9820        pane.read_with(cx, |pane, _| {
 9821            assert!(!pane.can_navigate_backward());
 9822            assert!(pane.can_navigate_forward());
 9823        });
 9824    }
 9825
 9826    #[gpui::test]
 9827    async fn test_toggle_docks_and_panels(cx: &mut gpui::TestAppContext) {
 9828        init_test(cx);
 9829        let fs = FakeFs::new(cx.executor());
 9830
 9831        let project = Project::test(fs, [], cx).await;
 9832        let (workspace, cx) =
 9833            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9834
 9835        let panel = workspace.update_in(cx, |workspace, window, cx| {
 9836            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
 9837            workspace.add_panel(panel.clone(), window, cx);
 9838
 9839            workspace
 9840                .right_dock()
 9841                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
 9842
 9843            panel
 9844        });
 9845
 9846        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9847        pane.update_in(cx, |pane, window, cx| {
 9848            let item = cx.new(TestItem::new);
 9849            pane.add_item(Box::new(item), true, true, None, window, cx);
 9850        });
 9851
 9852        // Transfer focus from center to panel
 9853        workspace.update_in(cx, |workspace, window, cx| {
 9854            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 9855        });
 9856
 9857        workspace.update_in(cx, |workspace, window, cx| {
 9858            assert!(workspace.right_dock().read(cx).is_open());
 9859            assert!(!panel.is_zoomed(window, cx));
 9860            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9861        });
 9862
 9863        // Transfer focus from panel to center
 9864        workspace.update_in(cx, |workspace, window, cx| {
 9865            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 9866        });
 9867
 9868        workspace.update_in(cx, |workspace, window, cx| {
 9869            assert!(workspace.right_dock().read(cx).is_open());
 9870            assert!(!panel.is_zoomed(window, cx));
 9871            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9872        });
 9873
 9874        // Close the dock
 9875        workspace.update_in(cx, |workspace, window, cx| {
 9876            workspace.toggle_dock(DockPosition::Right, window, cx);
 9877        });
 9878
 9879        workspace.update_in(cx, |workspace, window, cx| {
 9880            assert!(!workspace.right_dock().read(cx).is_open());
 9881            assert!(!panel.is_zoomed(window, cx));
 9882            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9883        });
 9884
 9885        // Open the dock
 9886        workspace.update_in(cx, |workspace, window, cx| {
 9887            workspace.toggle_dock(DockPosition::Right, window, cx);
 9888        });
 9889
 9890        workspace.update_in(cx, |workspace, window, cx| {
 9891            assert!(workspace.right_dock().read(cx).is_open());
 9892            assert!(!panel.is_zoomed(window, cx));
 9893            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9894        });
 9895
 9896        // Focus and zoom panel
 9897        panel.update_in(cx, |panel, window, cx| {
 9898            cx.focus_self(window);
 9899            panel.set_zoomed(true, window, cx)
 9900        });
 9901
 9902        workspace.update_in(cx, |workspace, window, cx| {
 9903            assert!(workspace.right_dock().read(cx).is_open());
 9904            assert!(panel.is_zoomed(window, cx));
 9905            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9906        });
 9907
 9908        // Transfer focus to the center closes the dock
 9909        workspace.update_in(cx, |workspace, window, cx| {
 9910            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 9911        });
 9912
 9913        workspace.update_in(cx, |workspace, window, cx| {
 9914            assert!(!workspace.right_dock().read(cx).is_open());
 9915            assert!(panel.is_zoomed(window, cx));
 9916            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9917        });
 9918
 9919        // Transferring focus back to the panel keeps it zoomed
 9920        workspace.update_in(cx, |workspace, window, cx| {
 9921            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 9922        });
 9923
 9924        workspace.update_in(cx, |workspace, window, cx| {
 9925            assert!(workspace.right_dock().read(cx).is_open());
 9926            assert!(panel.is_zoomed(window, cx));
 9927            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9928        });
 9929
 9930        // Close the dock while it is zoomed
 9931        workspace.update_in(cx, |workspace, window, cx| {
 9932            workspace.toggle_dock(DockPosition::Right, window, cx)
 9933        });
 9934
 9935        workspace.update_in(cx, |workspace, window, cx| {
 9936            assert!(!workspace.right_dock().read(cx).is_open());
 9937            assert!(panel.is_zoomed(window, cx));
 9938            assert!(workspace.zoomed.is_none());
 9939            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9940        });
 9941
 9942        // Opening the dock, when it's zoomed, retains focus
 9943        workspace.update_in(cx, |workspace, window, cx| {
 9944            workspace.toggle_dock(DockPosition::Right, window, cx)
 9945        });
 9946
 9947        workspace.update_in(cx, |workspace, window, cx| {
 9948            assert!(workspace.right_dock().read(cx).is_open());
 9949            assert!(panel.is_zoomed(window, cx));
 9950            assert!(workspace.zoomed.is_some());
 9951            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9952        });
 9953
 9954        // Unzoom and close the panel, zoom the active pane.
 9955        panel.update_in(cx, |panel, window, cx| panel.set_zoomed(false, window, cx));
 9956        workspace.update_in(cx, |workspace, window, cx| {
 9957            workspace.toggle_dock(DockPosition::Right, window, cx)
 9958        });
 9959        pane.update_in(cx, |pane, window, cx| {
 9960            pane.toggle_zoom(&Default::default(), window, cx)
 9961        });
 9962
 9963        // Opening a dock unzooms the pane.
 9964        workspace.update_in(cx, |workspace, window, cx| {
 9965            workspace.toggle_dock(DockPosition::Right, window, cx)
 9966        });
 9967        workspace.update_in(cx, |workspace, window, cx| {
 9968            let pane = pane.read(cx);
 9969            assert!(!pane.is_zoomed());
 9970            assert!(!pane.focus_handle(cx).is_focused(window));
 9971            assert!(workspace.right_dock().read(cx).is_open());
 9972            assert!(workspace.zoomed.is_none());
 9973        });
 9974    }
 9975
 9976    #[gpui::test]
 9977    async fn test_pane_zoom_in_out(cx: &mut TestAppContext) {
 9978        init_test(cx);
 9979        let fs = FakeFs::new(cx.executor());
 9980
 9981        let project = Project::test(fs, [], cx).await;
 9982        let (workspace, cx) =
 9983            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9984
 9985        let pane = workspace.update_in(cx, |workspace, _window, _cx| {
 9986            workspace.active_pane().clone()
 9987        });
 9988
 9989        // Add an item to the pane so it can be zoomed
 9990        workspace.update_in(cx, |workspace, window, cx| {
 9991            let item = cx.new(TestItem::new);
 9992            workspace.add_item(pane.clone(), Box::new(item), None, true, true, window, cx);
 9993        });
 9994
 9995        // Initially not zoomed
 9996        workspace.update_in(cx, |workspace, _window, cx| {
 9997            assert!(!pane.read(cx).is_zoomed(), "Pane starts unzoomed");
 9998            assert!(
 9999                workspace.zoomed.is_none(),
10000                "Workspace should track no zoomed pane"
10001            );
10002            assert!(pane.read(cx).items_len() > 0, "Pane should have items");
10003        });
10004
10005        // Zoom In
10006        pane.update_in(cx, |pane, window, cx| {
10007            pane.zoom_in(&crate::ZoomIn, window, cx);
10008        });
10009
10010        workspace.update_in(cx, |workspace, window, cx| {
10011            assert!(
10012                pane.read(cx).is_zoomed(),
10013                "Pane should be zoomed after ZoomIn"
10014            );
10015            assert!(
10016                workspace.zoomed.is_some(),
10017                "Workspace should track the zoomed pane"
10018            );
10019            assert!(
10020                pane.read(cx).focus_handle(cx).contains_focused(window, cx),
10021                "ZoomIn should focus the pane"
10022            );
10023        });
10024
10025        // Zoom In again is a no-op
10026        pane.update_in(cx, |pane, window, cx| {
10027            pane.zoom_in(&crate::ZoomIn, window, cx);
10028        });
10029
10030        workspace.update_in(cx, |workspace, window, cx| {
10031            assert!(pane.read(cx).is_zoomed(), "Second ZoomIn keeps pane zoomed");
10032            assert!(
10033                workspace.zoomed.is_some(),
10034                "Workspace still tracks zoomed pane"
10035            );
10036            assert!(
10037                pane.read(cx).focus_handle(cx).contains_focused(window, cx),
10038                "Pane remains focused after repeated ZoomIn"
10039            );
10040        });
10041
10042        // Zoom Out
10043        pane.update_in(cx, |pane, window, cx| {
10044            pane.zoom_out(&crate::ZoomOut, window, cx);
10045        });
10046
10047        workspace.update_in(cx, |workspace, _window, cx| {
10048            assert!(
10049                !pane.read(cx).is_zoomed(),
10050                "Pane should unzoom after ZoomOut"
10051            );
10052            assert!(
10053                workspace.zoomed.is_none(),
10054                "Workspace clears zoom tracking after ZoomOut"
10055            );
10056        });
10057
10058        // Zoom Out again is a no-op
10059        pane.update_in(cx, |pane, window, cx| {
10060            pane.zoom_out(&crate::ZoomOut, window, cx);
10061        });
10062
10063        workspace.update_in(cx, |workspace, _window, cx| {
10064            assert!(
10065                !pane.read(cx).is_zoomed(),
10066                "Second ZoomOut keeps pane unzoomed"
10067            );
10068            assert!(
10069                workspace.zoomed.is_none(),
10070                "Workspace remains without zoomed pane"
10071            );
10072        });
10073    }
10074
10075    #[gpui::test]
10076    async fn test_toggle_all_docks(cx: &mut gpui::TestAppContext) {
10077        init_test(cx);
10078        let fs = FakeFs::new(cx.executor());
10079
10080        let project = Project::test(fs, [], cx).await;
10081        let (workspace, cx) =
10082            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10083        workspace.update_in(cx, |workspace, window, cx| {
10084            // Open two docks
10085            let left_dock = workspace.dock_at_position(DockPosition::Left);
10086            let right_dock = workspace.dock_at_position(DockPosition::Right);
10087
10088            left_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
10089            right_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
10090
10091            assert!(left_dock.read(cx).is_open());
10092            assert!(right_dock.read(cx).is_open());
10093        });
10094
10095        workspace.update_in(cx, |workspace, window, cx| {
10096            // Toggle all docks - should close both
10097            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
10098
10099            let left_dock = workspace.dock_at_position(DockPosition::Left);
10100            let right_dock = workspace.dock_at_position(DockPosition::Right);
10101            assert!(!left_dock.read(cx).is_open());
10102            assert!(!right_dock.read(cx).is_open());
10103        });
10104
10105        workspace.update_in(cx, |workspace, window, cx| {
10106            // Toggle again - should reopen both
10107            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
10108
10109            let left_dock = workspace.dock_at_position(DockPosition::Left);
10110            let right_dock = workspace.dock_at_position(DockPosition::Right);
10111            assert!(left_dock.read(cx).is_open());
10112            assert!(right_dock.read(cx).is_open());
10113        });
10114    }
10115
10116    #[gpui::test]
10117    async fn test_toggle_all_with_manual_close(cx: &mut gpui::TestAppContext) {
10118        init_test(cx);
10119        let fs = FakeFs::new(cx.executor());
10120
10121        let project = Project::test(fs, [], cx).await;
10122        let (workspace, cx) =
10123            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10124        workspace.update_in(cx, |workspace, window, cx| {
10125            // Open two docks
10126            let left_dock = workspace.dock_at_position(DockPosition::Left);
10127            let right_dock = workspace.dock_at_position(DockPosition::Right);
10128
10129            left_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
10130            right_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
10131
10132            assert!(left_dock.read(cx).is_open());
10133            assert!(right_dock.read(cx).is_open());
10134        });
10135
10136        workspace.update_in(cx, |workspace, window, cx| {
10137            // Close them manually
10138            workspace.toggle_dock(DockPosition::Left, window, cx);
10139            workspace.toggle_dock(DockPosition::Right, window, cx);
10140
10141            let left_dock = workspace.dock_at_position(DockPosition::Left);
10142            let right_dock = workspace.dock_at_position(DockPosition::Right);
10143            assert!(!left_dock.read(cx).is_open());
10144            assert!(!right_dock.read(cx).is_open());
10145        });
10146
10147        workspace.update_in(cx, |workspace, window, cx| {
10148            // Toggle all docks - only last closed (right dock) should reopen
10149            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
10150
10151            let left_dock = workspace.dock_at_position(DockPosition::Left);
10152            let right_dock = workspace.dock_at_position(DockPosition::Right);
10153            assert!(!left_dock.read(cx).is_open());
10154            assert!(right_dock.read(cx).is_open());
10155        });
10156    }
10157
10158    #[gpui::test]
10159    async fn test_toggle_all_docks_after_dock_move(cx: &mut gpui::TestAppContext) {
10160        init_test(cx);
10161        let fs = FakeFs::new(cx.executor());
10162        let project = Project::test(fs, [], cx).await;
10163        let (workspace, cx) =
10164            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10165
10166        // Open two docks (left and right) with one panel each
10167        let (left_panel, right_panel) = workspace.update_in(cx, |workspace, window, cx| {
10168            let left_panel = cx.new(|cx| TestPanel::new(DockPosition::Left, 100, cx));
10169            workspace.add_panel(left_panel.clone(), window, cx);
10170
10171            let right_panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 101, cx));
10172            workspace.add_panel(right_panel.clone(), window, cx);
10173
10174            workspace.toggle_dock(DockPosition::Left, window, cx);
10175            workspace.toggle_dock(DockPosition::Right, window, cx);
10176
10177            // Verify initial state
10178            assert!(
10179                workspace.left_dock().read(cx).is_open(),
10180                "Left dock should be open"
10181            );
10182            assert_eq!(
10183                workspace
10184                    .left_dock()
10185                    .read(cx)
10186                    .visible_panel()
10187                    .unwrap()
10188                    .panel_id(),
10189                left_panel.panel_id(),
10190                "Left panel should be visible in left dock"
10191            );
10192            assert!(
10193                workspace.right_dock().read(cx).is_open(),
10194                "Right dock should be open"
10195            );
10196            assert_eq!(
10197                workspace
10198                    .right_dock()
10199                    .read(cx)
10200                    .visible_panel()
10201                    .unwrap()
10202                    .panel_id(),
10203                right_panel.panel_id(),
10204                "Right panel should be visible in right dock"
10205            );
10206            assert!(
10207                !workspace.bottom_dock().read(cx).is_open(),
10208                "Bottom dock should be closed"
10209            );
10210
10211            (left_panel, right_panel)
10212        });
10213
10214        // Focus the left panel and move it to the next position (bottom dock)
10215        workspace.update_in(cx, |workspace, window, cx| {
10216            workspace.toggle_panel_focus::<TestPanel>(window, cx); // Focus left panel
10217            assert!(
10218                left_panel.read(cx).focus_handle(cx).is_focused(window),
10219                "Left panel should be focused"
10220            );
10221        });
10222
10223        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10224
10225        // Verify the left panel has moved to the bottom dock, and the bottom dock is now open
10226        workspace.update(cx, |workspace, cx| {
10227            assert!(
10228                !workspace.left_dock().read(cx).is_open(),
10229                "Left dock should be closed"
10230            );
10231            assert!(
10232                workspace.bottom_dock().read(cx).is_open(),
10233                "Bottom dock should now be open"
10234            );
10235            assert_eq!(
10236                left_panel.read(cx).position,
10237                DockPosition::Bottom,
10238                "Left panel should now be in the bottom dock"
10239            );
10240            assert_eq!(
10241                workspace
10242                    .bottom_dock()
10243                    .read(cx)
10244                    .visible_panel()
10245                    .unwrap()
10246                    .panel_id(),
10247                left_panel.panel_id(),
10248                "Left panel should be the visible panel in the bottom dock"
10249            );
10250        });
10251
10252        // Toggle all docks off
10253        workspace.update_in(cx, |workspace, window, cx| {
10254            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
10255            assert!(
10256                !workspace.left_dock().read(cx).is_open(),
10257                "Left dock should be closed"
10258            );
10259            assert!(
10260                !workspace.right_dock().read(cx).is_open(),
10261                "Right dock should be closed"
10262            );
10263            assert!(
10264                !workspace.bottom_dock().read(cx).is_open(),
10265                "Bottom dock should be closed"
10266            );
10267        });
10268
10269        // Toggle all docks back on and verify positions are restored
10270        workspace.update_in(cx, |workspace, window, cx| {
10271            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
10272            assert!(
10273                !workspace.left_dock().read(cx).is_open(),
10274                "Left dock should remain closed"
10275            );
10276            assert!(
10277                workspace.right_dock().read(cx).is_open(),
10278                "Right dock should remain open"
10279            );
10280            assert!(
10281                workspace.bottom_dock().read(cx).is_open(),
10282                "Bottom dock should remain open"
10283            );
10284            assert_eq!(
10285                left_panel.read(cx).position,
10286                DockPosition::Bottom,
10287                "Left panel should remain in the bottom dock"
10288            );
10289            assert_eq!(
10290                right_panel.read(cx).position,
10291                DockPosition::Right,
10292                "Right panel should remain in the right dock"
10293            );
10294            assert_eq!(
10295                workspace
10296                    .bottom_dock()
10297                    .read(cx)
10298                    .visible_panel()
10299                    .unwrap()
10300                    .panel_id(),
10301                left_panel.panel_id(),
10302                "Left panel should be the visible panel in the right dock"
10303            );
10304        });
10305    }
10306
10307    #[gpui::test]
10308    async fn test_join_pane_into_next(cx: &mut gpui::TestAppContext) {
10309        init_test(cx);
10310
10311        let fs = FakeFs::new(cx.executor());
10312
10313        let project = Project::test(fs, None, cx).await;
10314        let (workspace, cx) =
10315            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10316
10317        // Let's arrange the panes like this:
10318        //
10319        // +-----------------------+
10320        // |         top           |
10321        // +------+--------+-------+
10322        // | left | center | right |
10323        // +------+--------+-------+
10324        // |        bottom         |
10325        // +-----------------------+
10326
10327        let top_item = cx.new(|cx| {
10328            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "top.txt", cx)])
10329        });
10330        let bottom_item = cx.new(|cx| {
10331            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "bottom.txt", cx)])
10332        });
10333        let left_item = cx.new(|cx| {
10334            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "left.txt", cx)])
10335        });
10336        let right_item = cx.new(|cx| {
10337            TestItem::new(cx).with_project_items(&[TestProjectItem::new(4, "right.txt", cx)])
10338        });
10339        let center_item = cx.new(|cx| {
10340            TestItem::new(cx).with_project_items(&[TestProjectItem::new(5, "center.txt", cx)])
10341        });
10342
10343        let top_pane_id = workspace.update_in(cx, |workspace, window, cx| {
10344            let top_pane_id = workspace.active_pane().entity_id();
10345            workspace.add_item_to_active_pane(Box::new(top_item.clone()), None, false, window, cx);
10346            workspace.split_pane(
10347                workspace.active_pane().clone(),
10348                SplitDirection::Down,
10349                window,
10350                cx,
10351            );
10352            top_pane_id
10353        });
10354        let bottom_pane_id = workspace.update_in(cx, |workspace, window, cx| {
10355            let bottom_pane_id = workspace.active_pane().entity_id();
10356            workspace.add_item_to_active_pane(
10357                Box::new(bottom_item.clone()),
10358                None,
10359                false,
10360                window,
10361                cx,
10362            );
10363            workspace.split_pane(
10364                workspace.active_pane().clone(),
10365                SplitDirection::Up,
10366                window,
10367                cx,
10368            );
10369            bottom_pane_id
10370        });
10371        let left_pane_id = workspace.update_in(cx, |workspace, window, cx| {
10372            let left_pane_id = workspace.active_pane().entity_id();
10373            workspace.add_item_to_active_pane(Box::new(left_item.clone()), None, false, window, cx);
10374            workspace.split_pane(
10375                workspace.active_pane().clone(),
10376                SplitDirection::Right,
10377                window,
10378                cx,
10379            );
10380            left_pane_id
10381        });
10382        let right_pane_id = workspace.update_in(cx, |workspace, window, cx| {
10383            let right_pane_id = workspace.active_pane().entity_id();
10384            workspace.add_item_to_active_pane(
10385                Box::new(right_item.clone()),
10386                None,
10387                false,
10388                window,
10389                cx,
10390            );
10391            workspace.split_pane(
10392                workspace.active_pane().clone(),
10393                SplitDirection::Left,
10394                window,
10395                cx,
10396            );
10397            right_pane_id
10398        });
10399        let center_pane_id = workspace.update_in(cx, |workspace, window, cx| {
10400            let center_pane_id = workspace.active_pane().entity_id();
10401            workspace.add_item_to_active_pane(
10402                Box::new(center_item.clone()),
10403                None,
10404                false,
10405                window,
10406                cx,
10407            );
10408            center_pane_id
10409        });
10410        cx.executor().run_until_parked();
10411
10412        workspace.update_in(cx, |workspace, window, cx| {
10413            assert_eq!(center_pane_id, workspace.active_pane().entity_id());
10414
10415            // Join into next from center pane into right
10416            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
10417        });
10418
10419        workspace.update_in(cx, |workspace, window, cx| {
10420            let active_pane = workspace.active_pane();
10421            assert_eq!(right_pane_id, active_pane.entity_id());
10422            assert_eq!(2, active_pane.read(cx).items_len());
10423            let item_ids_in_pane =
10424                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
10425            assert!(item_ids_in_pane.contains(&center_item.item_id()));
10426            assert!(item_ids_in_pane.contains(&right_item.item_id()));
10427
10428            // Join into next from right pane into bottom
10429            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
10430        });
10431
10432        workspace.update_in(cx, |workspace, window, cx| {
10433            let active_pane = workspace.active_pane();
10434            assert_eq!(bottom_pane_id, active_pane.entity_id());
10435            assert_eq!(3, active_pane.read(cx).items_len());
10436            let item_ids_in_pane =
10437                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
10438            assert!(item_ids_in_pane.contains(&center_item.item_id()));
10439            assert!(item_ids_in_pane.contains(&right_item.item_id()));
10440            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
10441
10442            // Join into next from bottom pane into left
10443            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
10444        });
10445
10446        workspace.update_in(cx, |workspace, window, cx| {
10447            let active_pane = workspace.active_pane();
10448            assert_eq!(left_pane_id, active_pane.entity_id());
10449            assert_eq!(4, active_pane.read(cx).items_len());
10450            let item_ids_in_pane =
10451                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
10452            assert!(item_ids_in_pane.contains(&center_item.item_id()));
10453            assert!(item_ids_in_pane.contains(&right_item.item_id()));
10454            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
10455            assert!(item_ids_in_pane.contains(&left_item.item_id()));
10456
10457            // Join into next from left pane into top
10458            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
10459        });
10460
10461        workspace.update_in(cx, |workspace, window, cx| {
10462            let active_pane = workspace.active_pane();
10463            assert_eq!(top_pane_id, active_pane.entity_id());
10464            assert_eq!(5, active_pane.read(cx).items_len());
10465            let item_ids_in_pane =
10466                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
10467            assert!(item_ids_in_pane.contains(&center_item.item_id()));
10468            assert!(item_ids_in_pane.contains(&right_item.item_id()));
10469            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
10470            assert!(item_ids_in_pane.contains(&left_item.item_id()));
10471            assert!(item_ids_in_pane.contains(&top_item.item_id()));
10472
10473            // Single pane left: no-op
10474            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx)
10475        });
10476
10477        workspace.update(cx, |workspace, _cx| {
10478            let active_pane = workspace.active_pane();
10479            assert_eq!(top_pane_id, active_pane.entity_id());
10480        });
10481    }
10482
10483    fn add_an_item_to_active_pane(
10484        cx: &mut VisualTestContext,
10485        workspace: &Entity<Workspace>,
10486        item_id: u64,
10487    ) -> Entity<TestItem> {
10488        let item = cx.new(|cx| {
10489            TestItem::new(cx).with_project_items(&[TestProjectItem::new(
10490                item_id,
10491                "item{item_id}.txt",
10492                cx,
10493            )])
10494        });
10495        workspace.update_in(cx, |workspace, window, cx| {
10496            workspace.add_item_to_active_pane(Box::new(item.clone()), None, false, window, cx);
10497        });
10498        item
10499    }
10500
10501    fn split_pane(cx: &mut VisualTestContext, workspace: &Entity<Workspace>) -> Entity<Pane> {
10502        workspace.update_in(cx, |workspace, window, cx| {
10503            workspace.split_pane(
10504                workspace.active_pane().clone(),
10505                SplitDirection::Right,
10506                window,
10507                cx,
10508            )
10509        })
10510    }
10511
10512    #[gpui::test]
10513    async fn test_join_all_panes(cx: &mut gpui::TestAppContext) {
10514        init_test(cx);
10515        let fs = FakeFs::new(cx.executor());
10516        let project = Project::test(fs, None, cx).await;
10517        let (workspace, cx) =
10518            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10519
10520        add_an_item_to_active_pane(cx, &workspace, 1);
10521        split_pane(cx, &workspace);
10522        add_an_item_to_active_pane(cx, &workspace, 2);
10523        split_pane(cx, &workspace); // empty pane
10524        split_pane(cx, &workspace);
10525        let last_item = add_an_item_to_active_pane(cx, &workspace, 3);
10526
10527        cx.executor().run_until_parked();
10528
10529        workspace.update(cx, |workspace, cx| {
10530            let num_panes = workspace.panes().len();
10531            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
10532            let active_item = workspace
10533                .active_pane()
10534                .read(cx)
10535                .active_item()
10536                .expect("item is in focus");
10537
10538            assert_eq!(num_panes, 4);
10539            assert_eq!(num_items_in_current_pane, 1);
10540            assert_eq!(active_item.item_id(), last_item.item_id());
10541        });
10542
10543        workspace.update_in(cx, |workspace, window, cx| {
10544            workspace.join_all_panes(window, cx);
10545        });
10546
10547        workspace.update(cx, |workspace, cx| {
10548            let num_panes = workspace.panes().len();
10549            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
10550            let active_item = workspace
10551                .active_pane()
10552                .read(cx)
10553                .active_item()
10554                .expect("item is in focus");
10555
10556            assert_eq!(num_panes, 1);
10557            assert_eq!(num_items_in_current_pane, 3);
10558            assert_eq!(active_item.item_id(), last_item.item_id());
10559        });
10560    }
10561    struct TestModal(FocusHandle);
10562
10563    impl TestModal {
10564        fn new(_: &mut Window, cx: &mut Context<Self>) -> Self {
10565            Self(cx.focus_handle())
10566        }
10567    }
10568
10569    impl EventEmitter<DismissEvent> for TestModal {}
10570
10571    impl Focusable for TestModal {
10572        fn focus_handle(&self, _cx: &App) -> FocusHandle {
10573            self.0.clone()
10574        }
10575    }
10576
10577    impl ModalView for TestModal {}
10578
10579    impl Render for TestModal {
10580        fn render(
10581            &mut self,
10582            _window: &mut Window,
10583            _cx: &mut Context<TestModal>,
10584        ) -> impl IntoElement {
10585            div().track_focus(&self.0)
10586        }
10587    }
10588
10589    #[gpui::test]
10590    async fn test_panels(cx: &mut gpui::TestAppContext) {
10591        init_test(cx);
10592        let fs = FakeFs::new(cx.executor());
10593
10594        let project = Project::test(fs, [], cx).await;
10595        let (workspace, cx) =
10596            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10597
10598        let (panel_1, panel_2) = workspace.update_in(cx, |workspace, window, cx| {
10599            let panel_1 = cx.new(|cx| TestPanel::new(DockPosition::Left, 100, cx));
10600            workspace.add_panel(panel_1.clone(), window, cx);
10601            workspace.toggle_dock(DockPosition::Left, window, cx);
10602            let panel_2 = cx.new(|cx| TestPanel::new(DockPosition::Right, 101, cx));
10603            workspace.add_panel(panel_2.clone(), window, cx);
10604            workspace.toggle_dock(DockPosition::Right, window, cx);
10605
10606            let left_dock = workspace.left_dock();
10607            assert_eq!(
10608                left_dock.read(cx).visible_panel().unwrap().panel_id(),
10609                panel_1.panel_id()
10610            );
10611            assert_eq!(
10612                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
10613                panel_1.size(window, cx)
10614            );
10615
10616            left_dock.update(cx, |left_dock, cx| {
10617                left_dock.resize_active_panel(Some(px(1337.)), window, cx)
10618            });
10619            assert_eq!(
10620                workspace
10621                    .right_dock()
10622                    .read(cx)
10623                    .visible_panel()
10624                    .unwrap()
10625                    .panel_id(),
10626                panel_2.panel_id(),
10627            );
10628
10629            (panel_1, panel_2)
10630        });
10631
10632        // Move panel_1 to the right
10633        panel_1.update_in(cx, |panel_1, window, cx| {
10634            panel_1.set_position(DockPosition::Right, window, cx)
10635        });
10636
10637        workspace.update_in(cx, |workspace, window, cx| {
10638            // Since panel_1 was visible on the left, it should now be visible now that it's been moved to the right.
10639            // Since it was the only panel on the left, the left dock should now be closed.
10640            assert!(!workspace.left_dock().read(cx).is_open());
10641            assert!(workspace.left_dock().read(cx).visible_panel().is_none());
10642            let right_dock = workspace.right_dock();
10643            assert_eq!(
10644                right_dock.read(cx).visible_panel().unwrap().panel_id(),
10645                panel_1.panel_id()
10646            );
10647            assert_eq!(
10648                right_dock.read(cx).active_panel_size(window, cx).unwrap(),
10649                px(1337.)
10650            );
10651
10652            // Now we move panel_2 to the left
10653            panel_2.set_position(DockPosition::Left, window, cx);
10654        });
10655
10656        workspace.update(cx, |workspace, cx| {
10657            // Since panel_2 was not visible on the right, we don't open the left dock.
10658            assert!(!workspace.left_dock().read(cx).is_open());
10659            // And the right dock is unaffected in its displaying of panel_1
10660            assert!(workspace.right_dock().read(cx).is_open());
10661            assert_eq!(
10662                workspace
10663                    .right_dock()
10664                    .read(cx)
10665                    .visible_panel()
10666                    .unwrap()
10667                    .panel_id(),
10668                panel_1.panel_id(),
10669            );
10670        });
10671
10672        // Move panel_1 back to the left
10673        panel_1.update_in(cx, |panel_1, window, cx| {
10674            panel_1.set_position(DockPosition::Left, window, cx)
10675        });
10676
10677        workspace.update_in(cx, |workspace, window, cx| {
10678            // Since panel_1 was visible on the right, we open the left dock and make panel_1 active.
10679            let left_dock = workspace.left_dock();
10680            assert!(left_dock.read(cx).is_open());
10681            assert_eq!(
10682                left_dock.read(cx).visible_panel().unwrap().panel_id(),
10683                panel_1.panel_id()
10684            );
10685            assert_eq!(
10686                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
10687                px(1337.)
10688            );
10689            // And the right dock should be closed as it no longer has any panels.
10690            assert!(!workspace.right_dock().read(cx).is_open());
10691
10692            // Now we move panel_1 to the bottom
10693            panel_1.set_position(DockPosition::Bottom, window, cx);
10694        });
10695
10696        workspace.update_in(cx, |workspace, window, cx| {
10697            // Since panel_1 was visible on the left, we close the left dock.
10698            assert!(!workspace.left_dock().read(cx).is_open());
10699            // The bottom dock is sized based on the panel's default size,
10700            // since the panel orientation changed from vertical to horizontal.
10701            let bottom_dock = workspace.bottom_dock();
10702            assert_eq!(
10703                bottom_dock.read(cx).active_panel_size(window, cx).unwrap(),
10704                panel_1.size(window, cx),
10705            );
10706            // Close bottom dock and move panel_1 back to the left.
10707            bottom_dock.update(cx, |bottom_dock, cx| {
10708                bottom_dock.set_open(false, window, cx)
10709            });
10710            panel_1.set_position(DockPosition::Left, window, cx);
10711        });
10712
10713        // Emit activated event on panel 1
10714        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Activate));
10715
10716        // Now the left dock is open and panel_1 is active and focused.
10717        workspace.update_in(cx, |workspace, window, cx| {
10718            let left_dock = workspace.left_dock();
10719            assert!(left_dock.read(cx).is_open());
10720            assert_eq!(
10721                left_dock.read(cx).visible_panel().unwrap().panel_id(),
10722                panel_1.panel_id(),
10723            );
10724            assert!(panel_1.focus_handle(cx).is_focused(window));
10725        });
10726
10727        // Emit closed event on panel 2, which is not active
10728        panel_2.update(cx, |_, cx| cx.emit(PanelEvent::Close));
10729
10730        // Wo don't close the left dock, because panel_2 wasn't the active panel
10731        workspace.update(cx, |workspace, cx| {
10732            let left_dock = workspace.left_dock();
10733            assert!(left_dock.read(cx).is_open());
10734            assert_eq!(
10735                left_dock.read(cx).visible_panel().unwrap().panel_id(),
10736                panel_1.panel_id(),
10737            );
10738        });
10739
10740        // Emitting a ZoomIn event shows the panel as zoomed.
10741        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomIn));
10742        workspace.read_with(cx, |workspace, _| {
10743            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
10744            assert_eq!(workspace.zoomed_position, Some(DockPosition::Left));
10745        });
10746
10747        // Move panel to another dock while it is zoomed
10748        panel_1.update_in(cx, |panel, window, cx| {
10749            panel.set_position(DockPosition::Right, window, cx)
10750        });
10751        workspace.read_with(cx, |workspace, _| {
10752            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
10753
10754            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
10755        });
10756
10757        // This is a helper for getting a:
10758        // - valid focus on an element,
10759        // - that isn't a part of the panes and panels system of the Workspace,
10760        // - and doesn't trigger the 'on_focus_lost' API.
10761        let focus_other_view = {
10762            let workspace = workspace.clone();
10763            move |cx: &mut VisualTestContext| {
10764                workspace.update_in(cx, |workspace, window, cx| {
10765                    if workspace.active_modal::<TestModal>(cx).is_some() {
10766                        workspace.toggle_modal(window, cx, TestModal::new);
10767                        workspace.toggle_modal(window, cx, TestModal::new);
10768                    } else {
10769                        workspace.toggle_modal(window, cx, TestModal::new);
10770                    }
10771                })
10772            }
10773        };
10774
10775        // If focus is transferred to another view that's not a panel or another pane, we still show
10776        // the panel as zoomed.
10777        focus_other_view(cx);
10778        workspace.read_with(cx, |workspace, _| {
10779            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
10780            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
10781        });
10782
10783        // If focus is transferred elsewhere in the workspace, the panel is no longer zoomed.
10784        workspace.update_in(cx, |_workspace, window, cx| {
10785            cx.focus_self(window);
10786        });
10787        workspace.read_with(cx, |workspace, _| {
10788            assert_eq!(workspace.zoomed, None);
10789            assert_eq!(workspace.zoomed_position, None);
10790        });
10791
10792        // If focus is transferred again to another view that's not a panel or a pane, we won't
10793        // show the panel as zoomed because it wasn't zoomed before.
10794        focus_other_view(cx);
10795        workspace.read_with(cx, |workspace, _| {
10796            assert_eq!(workspace.zoomed, None);
10797            assert_eq!(workspace.zoomed_position, None);
10798        });
10799
10800        // When the panel is activated, it is zoomed again.
10801        cx.dispatch_action(ToggleRightDock);
10802        workspace.read_with(cx, |workspace, _| {
10803            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
10804            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
10805        });
10806
10807        // Emitting a ZoomOut event unzooms the panel.
10808        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomOut));
10809        workspace.read_with(cx, |workspace, _| {
10810            assert_eq!(workspace.zoomed, None);
10811            assert_eq!(workspace.zoomed_position, None);
10812        });
10813
10814        // Emit closed event on panel 1, which is active
10815        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Close));
10816
10817        // Now the left dock is closed, because panel_1 was the active panel
10818        workspace.update(cx, |workspace, cx| {
10819            let right_dock = workspace.right_dock();
10820            assert!(!right_dock.read(cx).is_open());
10821        });
10822    }
10823
10824    #[gpui::test]
10825    async fn test_no_save_prompt_when_multi_buffer_dirty_items_closed(cx: &mut TestAppContext) {
10826        init_test(cx);
10827
10828        let fs = FakeFs::new(cx.background_executor.clone());
10829        let project = Project::test(fs, [], cx).await;
10830        let (workspace, cx) =
10831            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10832        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10833
10834        let dirty_regular_buffer = cx.new(|cx| {
10835            TestItem::new(cx)
10836                .with_dirty(true)
10837                .with_label("1.txt")
10838                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10839        });
10840        let dirty_regular_buffer_2 = cx.new(|cx| {
10841            TestItem::new(cx)
10842                .with_dirty(true)
10843                .with_label("2.txt")
10844                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10845        });
10846        let dirty_multi_buffer_with_both = cx.new(|cx| {
10847            TestItem::new(cx)
10848                .with_dirty(true)
10849                .with_buffer_kind(ItemBufferKind::Multibuffer)
10850                .with_label("Fake Project Search")
10851                .with_project_items(&[
10852                    dirty_regular_buffer.read(cx).project_items[0].clone(),
10853                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
10854                ])
10855        });
10856        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
10857        workspace.update_in(cx, |workspace, window, cx| {
10858            workspace.add_item(
10859                pane.clone(),
10860                Box::new(dirty_regular_buffer.clone()),
10861                None,
10862                false,
10863                false,
10864                window,
10865                cx,
10866            );
10867            workspace.add_item(
10868                pane.clone(),
10869                Box::new(dirty_regular_buffer_2.clone()),
10870                None,
10871                false,
10872                false,
10873                window,
10874                cx,
10875            );
10876            workspace.add_item(
10877                pane.clone(),
10878                Box::new(dirty_multi_buffer_with_both.clone()),
10879                None,
10880                false,
10881                false,
10882                window,
10883                cx,
10884            );
10885        });
10886
10887        pane.update_in(cx, |pane, window, cx| {
10888            pane.activate_item(2, true, true, window, cx);
10889            assert_eq!(
10890                pane.active_item().unwrap().item_id(),
10891                multi_buffer_with_both_files_id,
10892                "Should select the multi buffer in the pane"
10893            );
10894        });
10895        let close_all_but_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
10896            pane.close_other_items(
10897                &CloseOtherItems {
10898                    save_intent: Some(SaveIntent::Save),
10899                    close_pinned: true,
10900                },
10901                None,
10902                window,
10903                cx,
10904            )
10905        });
10906        cx.background_executor.run_until_parked();
10907        assert!(!cx.has_pending_prompt());
10908        close_all_but_multi_buffer_task
10909            .await
10910            .expect("Closing all buffers but the multi buffer failed");
10911        pane.update(cx, |pane, cx| {
10912            assert_eq!(dirty_regular_buffer.read(cx).save_count, 1);
10913            assert_eq!(dirty_multi_buffer_with_both.read(cx).save_count, 0);
10914            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 1);
10915            assert_eq!(pane.items_len(), 1);
10916            assert_eq!(
10917                pane.active_item().unwrap().item_id(),
10918                multi_buffer_with_both_files_id,
10919                "Should have only the multi buffer left in the pane"
10920            );
10921            assert!(
10922                dirty_multi_buffer_with_both.read(cx).is_dirty,
10923                "The multi buffer containing the unsaved buffer should still be dirty"
10924            );
10925        });
10926
10927        dirty_regular_buffer.update(cx, |buffer, cx| {
10928            buffer.project_items[0].update(cx, |pi, _| pi.is_dirty = true)
10929        });
10930
10931        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
10932            pane.close_active_item(
10933                &CloseActiveItem {
10934                    save_intent: Some(SaveIntent::Close),
10935                    close_pinned: false,
10936                },
10937                window,
10938                cx,
10939            )
10940        });
10941        cx.background_executor.run_until_parked();
10942        assert!(
10943            cx.has_pending_prompt(),
10944            "Dirty multi buffer should prompt a save dialog"
10945        );
10946        cx.simulate_prompt_answer("Save");
10947        cx.background_executor.run_until_parked();
10948        close_multi_buffer_task
10949            .await
10950            .expect("Closing the multi buffer failed");
10951        pane.update(cx, |pane, cx| {
10952            assert_eq!(
10953                dirty_multi_buffer_with_both.read(cx).save_count,
10954                1,
10955                "Multi buffer item should get be saved"
10956            );
10957            // Test impl does not save inner items, so we do not assert them
10958            assert_eq!(
10959                pane.items_len(),
10960                0,
10961                "No more items should be left in the pane"
10962            );
10963            assert!(pane.active_item().is_none());
10964        });
10965    }
10966
10967    #[gpui::test]
10968    async fn test_save_prompt_when_dirty_multi_buffer_closed_with_some_of_its_dirty_items_not_present_in_the_pane(
10969        cx: &mut TestAppContext,
10970    ) {
10971        init_test(cx);
10972
10973        let fs = FakeFs::new(cx.background_executor.clone());
10974        let project = Project::test(fs, [], cx).await;
10975        let (workspace, cx) =
10976            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10977        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10978
10979        let dirty_regular_buffer = cx.new(|cx| {
10980            TestItem::new(cx)
10981                .with_dirty(true)
10982                .with_label("1.txt")
10983                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10984        });
10985        let dirty_regular_buffer_2 = cx.new(|cx| {
10986            TestItem::new(cx)
10987                .with_dirty(true)
10988                .with_label("2.txt")
10989                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10990        });
10991        let clear_regular_buffer = cx.new(|cx| {
10992            TestItem::new(cx)
10993                .with_label("3.txt")
10994                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
10995        });
10996
10997        let dirty_multi_buffer_with_both = cx.new(|cx| {
10998            TestItem::new(cx)
10999                .with_dirty(true)
11000                .with_buffer_kind(ItemBufferKind::Multibuffer)
11001                .with_label("Fake Project Search")
11002                .with_project_items(&[
11003                    dirty_regular_buffer.read(cx).project_items[0].clone(),
11004                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
11005                    clear_regular_buffer.read(cx).project_items[0].clone(),
11006                ])
11007        });
11008        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
11009        workspace.update_in(cx, |workspace, window, cx| {
11010            workspace.add_item(
11011                pane.clone(),
11012                Box::new(dirty_regular_buffer.clone()),
11013                None,
11014                false,
11015                false,
11016                window,
11017                cx,
11018            );
11019            workspace.add_item(
11020                pane.clone(),
11021                Box::new(dirty_multi_buffer_with_both.clone()),
11022                None,
11023                false,
11024                false,
11025                window,
11026                cx,
11027            );
11028        });
11029
11030        pane.update_in(cx, |pane, window, cx| {
11031            pane.activate_item(1, true, true, window, cx);
11032            assert_eq!(
11033                pane.active_item().unwrap().item_id(),
11034                multi_buffer_with_both_files_id,
11035                "Should select the multi buffer in the pane"
11036            );
11037        });
11038        let _close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
11039            pane.close_active_item(
11040                &CloseActiveItem {
11041                    save_intent: None,
11042                    close_pinned: false,
11043                },
11044                window,
11045                cx,
11046            )
11047        });
11048        cx.background_executor.run_until_parked();
11049        assert!(
11050            cx.has_pending_prompt(),
11051            "With one dirty item from the multi buffer not being in the pane, a save prompt should be shown"
11052        );
11053    }
11054
11055    /// Tests that when `close_on_file_delete` is enabled, files are automatically
11056    /// closed when they are deleted from disk.
11057    #[gpui::test]
11058    async fn test_close_on_disk_deletion_enabled(cx: &mut TestAppContext) {
11059        init_test(cx);
11060
11061        // Enable the close_on_disk_deletion setting
11062        cx.update_global(|store: &mut SettingsStore, cx| {
11063            store.update_user_settings(cx, |settings| {
11064                settings.workspace.close_on_file_delete = Some(true);
11065            });
11066        });
11067
11068        let fs = FakeFs::new(cx.background_executor.clone());
11069        let project = Project::test(fs, [], cx).await;
11070        let (workspace, cx) =
11071            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11072        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11073
11074        // Create a test item that simulates a file
11075        let item = cx.new(|cx| {
11076            TestItem::new(cx)
11077                .with_label("test.txt")
11078                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
11079        });
11080
11081        // Add item to workspace
11082        workspace.update_in(cx, |workspace, window, cx| {
11083            workspace.add_item(
11084                pane.clone(),
11085                Box::new(item.clone()),
11086                None,
11087                false,
11088                false,
11089                window,
11090                cx,
11091            );
11092        });
11093
11094        // Verify the item is in the pane
11095        pane.read_with(cx, |pane, _| {
11096            assert_eq!(pane.items().count(), 1);
11097        });
11098
11099        // Simulate file deletion by setting the item's deleted state
11100        item.update(cx, |item, _| {
11101            item.set_has_deleted_file(true);
11102        });
11103
11104        // Emit UpdateTab event to trigger the close behavior
11105        cx.run_until_parked();
11106        item.update(cx, |_, cx| {
11107            cx.emit(ItemEvent::UpdateTab);
11108        });
11109
11110        // Allow the close operation to complete
11111        cx.run_until_parked();
11112
11113        // Verify the item was automatically closed
11114        pane.read_with(cx, |pane, _| {
11115            assert_eq!(
11116                pane.items().count(),
11117                0,
11118                "Item should be automatically closed when file is deleted"
11119            );
11120        });
11121    }
11122
11123    /// Tests that when `close_on_file_delete` is disabled (default), files remain
11124    /// open with a strikethrough when they are deleted from disk.
11125    #[gpui::test]
11126    async fn test_close_on_disk_deletion_disabled(cx: &mut TestAppContext) {
11127        init_test(cx);
11128
11129        // Ensure close_on_disk_deletion is disabled (default)
11130        cx.update_global(|store: &mut SettingsStore, cx| {
11131            store.update_user_settings(cx, |settings| {
11132                settings.workspace.close_on_file_delete = Some(false);
11133            });
11134        });
11135
11136        let fs = FakeFs::new(cx.background_executor.clone());
11137        let project = Project::test(fs, [], cx).await;
11138        let (workspace, cx) =
11139            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11140        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11141
11142        // Create a test item that simulates a file
11143        let item = cx.new(|cx| {
11144            TestItem::new(cx)
11145                .with_label("test.txt")
11146                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
11147        });
11148
11149        // Add item to workspace
11150        workspace.update_in(cx, |workspace, window, cx| {
11151            workspace.add_item(
11152                pane.clone(),
11153                Box::new(item.clone()),
11154                None,
11155                false,
11156                false,
11157                window,
11158                cx,
11159            );
11160        });
11161
11162        // Verify the item is in the pane
11163        pane.read_with(cx, |pane, _| {
11164            assert_eq!(pane.items().count(), 1);
11165        });
11166
11167        // Simulate file deletion
11168        item.update(cx, |item, _| {
11169            item.set_has_deleted_file(true);
11170        });
11171
11172        // Emit UpdateTab event
11173        cx.run_until_parked();
11174        item.update(cx, |_, cx| {
11175            cx.emit(ItemEvent::UpdateTab);
11176        });
11177
11178        // Allow any potential close operation to complete
11179        cx.run_until_parked();
11180
11181        // Verify the item remains open (with strikethrough)
11182        pane.read_with(cx, |pane, _| {
11183            assert_eq!(
11184                pane.items().count(),
11185                1,
11186                "Item should remain open when close_on_disk_deletion is disabled"
11187            );
11188        });
11189
11190        // Verify the item shows as deleted
11191        item.read_with(cx, |item, _| {
11192            assert!(
11193                item.has_deleted_file,
11194                "Item should be marked as having deleted file"
11195            );
11196        });
11197    }
11198
11199    /// Tests that dirty files are not automatically closed when deleted from disk,
11200    /// even when `close_on_file_delete` is enabled. This ensures users don't lose
11201    /// unsaved changes without being prompted.
11202    #[gpui::test]
11203    async fn test_close_on_disk_deletion_with_dirty_file(cx: &mut TestAppContext) {
11204        init_test(cx);
11205
11206        // Enable the close_on_file_delete setting
11207        cx.update_global(|store: &mut SettingsStore, cx| {
11208            store.update_user_settings(cx, |settings| {
11209                settings.workspace.close_on_file_delete = Some(true);
11210            });
11211        });
11212
11213        let fs = FakeFs::new(cx.background_executor.clone());
11214        let project = Project::test(fs, [], cx).await;
11215        let (workspace, cx) =
11216            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11217        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11218
11219        // Create a dirty test item
11220        let item = cx.new(|cx| {
11221            TestItem::new(cx)
11222                .with_dirty(true)
11223                .with_label("test.txt")
11224                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
11225        });
11226
11227        // Add item to workspace
11228        workspace.update_in(cx, |workspace, window, cx| {
11229            workspace.add_item(
11230                pane.clone(),
11231                Box::new(item.clone()),
11232                None,
11233                false,
11234                false,
11235                window,
11236                cx,
11237            );
11238        });
11239
11240        // Simulate file deletion
11241        item.update(cx, |item, _| {
11242            item.set_has_deleted_file(true);
11243        });
11244
11245        // Emit UpdateTab event to trigger the close behavior
11246        cx.run_until_parked();
11247        item.update(cx, |_, cx| {
11248            cx.emit(ItemEvent::UpdateTab);
11249        });
11250
11251        // Allow any potential close operation to complete
11252        cx.run_until_parked();
11253
11254        // Verify the item remains open (dirty files are not auto-closed)
11255        pane.read_with(cx, |pane, _| {
11256            assert_eq!(
11257                pane.items().count(),
11258                1,
11259                "Dirty items should not be automatically closed even when file is deleted"
11260            );
11261        });
11262
11263        // Verify the item is marked as deleted and still dirty
11264        item.read_with(cx, |item, _| {
11265            assert!(
11266                item.has_deleted_file,
11267                "Item should be marked as having deleted file"
11268            );
11269            assert!(item.is_dirty, "Item should still be dirty");
11270        });
11271    }
11272
11273    /// Tests that navigation history is cleaned up when files are auto-closed
11274    /// due to deletion from disk.
11275    #[gpui::test]
11276    async fn test_close_on_disk_deletion_cleans_navigation_history(cx: &mut TestAppContext) {
11277        init_test(cx);
11278
11279        // Enable the close_on_file_delete setting
11280        cx.update_global(|store: &mut SettingsStore, cx| {
11281            store.update_user_settings(cx, |settings| {
11282                settings.workspace.close_on_file_delete = Some(true);
11283            });
11284        });
11285
11286        let fs = FakeFs::new(cx.background_executor.clone());
11287        let project = Project::test(fs, [], cx).await;
11288        let (workspace, cx) =
11289            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11290        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11291
11292        // Create test items
11293        let item1 = cx.new(|cx| {
11294            TestItem::new(cx)
11295                .with_label("test1.txt")
11296                .with_project_items(&[TestProjectItem::new(1, "test1.txt", cx)])
11297        });
11298        let item1_id = item1.item_id();
11299
11300        let item2 = cx.new(|cx| {
11301            TestItem::new(cx)
11302                .with_label("test2.txt")
11303                .with_project_items(&[TestProjectItem::new(2, "test2.txt", cx)])
11304        });
11305
11306        // Add items to workspace
11307        workspace.update_in(cx, |workspace, window, cx| {
11308            workspace.add_item(
11309                pane.clone(),
11310                Box::new(item1.clone()),
11311                None,
11312                false,
11313                false,
11314                window,
11315                cx,
11316            );
11317            workspace.add_item(
11318                pane.clone(),
11319                Box::new(item2.clone()),
11320                None,
11321                false,
11322                false,
11323                window,
11324                cx,
11325            );
11326        });
11327
11328        // Activate item1 to ensure it gets navigation entries
11329        pane.update_in(cx, |pane, window, cx| {
11330            pane.activate_item(0, true, true, window, cx);
11331        });
11332
11333        // Switch to item2 and back to create navigation history
11334        pane.update_in(cx, |pane, window, cx| {
11335            pane.activate_item(1, true, true, window, cx);
11336        });
11337        cx.run_until_parked();
11338
11339        pane.update_in(cx, |pane, window, cx| {
11340            pane.activate_item(0, true, true, window, cx);
11341        });
11342        cx.run_until_parked();
11343
11344        // Simulate file deletion for item1
11345        item1.update(cx, |item, _| {
11346            item.set_has_deleted_file(true);
11347        });
11348
11349        // Emit UpdateTab event to trigger the close behavior
11350        item1.update(cx, |_, cx| {
11351            cx.emit(ItemEvent::UpdateTab);
11352        });
11353        cx.run_until_parked();
11354
11355        // Verify item1 was closed
11356        pane.read_with(cx, |pane, _| {
11357            assert_eq!(
11358                pane.items().count(),
11359                1,
11360                "Should have 1 item remaining after auto-close"
11361            );
11362        });
11363
11364        // Check navigation history after close
11365        let has_item = pane.read_with(cx, |pane, cx| {
11366            let mut has_item = false;
11367            pane.nav_history().for_each_entry(cx, |entry, _| {
11368                if entry.item.id() == item1_id {
11369                    has_item = true;
11370                }
11371            });
11372            has_item
11373        });
11374
11375        assert!(
11376            !has_item,
11377            "Navigation history should not contain closed item entries"
11378        );
11379    }
11380
11381    #[gpui::test]
11382    async fn test_no_save_prompt_when_dirty_multi_buffer_closed_with_all_of_its_dirty_items_present_in_the_pane(
11383        cx: &mut TestAppContext,
11384    ) {
11385        init_test(cx);
11386
11387        let fs = FakeFs::new(cx.background_executor.clone());
11388        let project = Project::test(fs, [], cx).await;
11389        let (workspace, cx) =
11390            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11391        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11392
11393        let dirty_regular_buffer = cx.new(|cx| {
11394            TestItem::new(cx)
11395                .with_dirty(true)
11396                .with_label("1.txt")
11397                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
11398        });
11399        let dirty_regular_buffer_2 = cx.new(|cx| {
11400            TestItem::new(cx)
11401                .with_dirty(true)
11402                .with_label("2.txt")
11403                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
11404        });
11405        let clear_regular_buffer = cx.new(|cx| {
11406            TestItem::new(cx)
11407                .with_label("3.txt")
11408                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
11409        });
11410
11411        let dirty_multi_buffer = cx.new(|cx| {
11412            TestItem::new(cx)
11413                .with_dirty(true)
11414                .with_buffer_kind(ItemBufferKind::Multibuffer)
11415                .with_label("Fake Project Search")
11416                .with_project_items(&[
11417                    dirty_regular_buffer.read(cx).project_items[0].clone(),
11418                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
11419                    clear_regular_buffer.read(cx).project_items[0].clone(),
11420                ])
11421        });
11422        workspace.update_in(cx, |workspace, window, cx| {
11423            workspace.add_item(
11424                pane.clone(),
11425                Box::new(dirty_regular_buffer.clone()),
11426                None,
11427                false,
11428                false,
11429                window,
11430                cx,
11431            );
11432            workspace.add_item(
11433                pane.clone(),
11434                Box::new(dirty_regular_buffer_2.clone()),
11435                None,
11436                false,
11437                false,
11438                window,
11439                cx,
11440            );
11441            workspace.add_item(
11442                pane.clone(),
11443                Box::new(dirty_multi_buffer.clone()),
11444                None,
11445                false,
11446                false,
11447                window,
11448                cx,
11449            );
11450        });
11451
11452        pane.update_in(cx, |pane, window, cx| {
11453            pane.activate_item(2, true, true, window, cx);
11454            assert_eq!(
11455                pane.active_item().unwrap().item_id(),
11456                dirty_multi_buffer.item_id(),
11457                "Should select the multi buffer in the pane"
11458            );
11459        });
11460        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
11461            pane.close_active_item(
11462                &CloseActiveItem {
11463                    save_intent: None,
11464                    close_pinned: false,
11465                },
11466                window,
11467                cx,
11468            )
11469        });
11470        cx.background_executor.run_until_parked();
11471        assert!(
11472            !cx.has_pending_prompt(),
11473            "All dirty items from the multi buffer are in the pane still, no save prompts should be shown"
11474        );
11475        close_multi_buffer_task
11476            .await
11477            .expect("Closing multi buffer failed");
11478        pane.update(cx, |pane, cx| {
11479            assert_eq!(dirty_regular_buffer.read(cx).save_count, 0);
11480            assert_eq!(dirty_multi_buffer.read(cx).save_count, 0);
11481            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 0);
11482            assert_eq!(
11483                pane.items()
11484                    .map(|item| item.item_id())
11485                    .sorted()
11486                    .collect::<Vec<_>>(),
11487                vec![
11488                    dirty_regular_buffer.item_id(),
11489                    dirty_regular_buffer_2.item_id(),
11490                ],
11491                "Should have no multi buffer left in the pane"
11492            );
11493            assert!(dirty_regular_buffer.read(cx).is_dirty);
11494            assert!(dirty_regular_buffer_2.read(cx).is_dirty);
11495        });
11496    }
11497
11498    #[gpui::test]
11499    async fn test_move_focused_panel_to_next_position(cx: &mut gpui::TestAppContext) {
11500        init_test(cx);
11501        let fs = FakeFs::new(cx.executor());
11502        let project = Project::test(fs, [], cx).await;
11503        let (workspace, cx) =
11504            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11505
11506        // Add a new panel to the right dock, opening the dock and setting the
11507        // focus to the new panel.
11508        let panel = workspace.update_in(cx, |workspace, window, cx| {
11509            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
11510            workspace.add_panel(panel.clone(), window, cx);
11511
11512            workspace
11513                .right_dock()
11514                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
11515
11516            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11517
11518            panel
11519        });
11520
11521        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
11522        // panel to the next valid position which, in this case, is the left
11523        // dock.
11524        cx.dispatch_action(MoveFocusedPanelToNextPosition);
11525        workspace.update(cx, |workspace, cx| {
11526            assert!(workspace.left_dock().read(cx).is_open());
11527            assert_eq!(panel.read(cx).position, DockPosition::Left);
11528        });
11529
11530        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
11531        // panel to the next valid position which, in this case, is the bottom
11532        // dock.
11533        cx.dispatch_action(MoveFocusedPanelToNextPosition);
11534        workspace.update(cx, |workspace, cx| {
11535            assert!(workspace.bottom_dock().read(cx).is_open());
11536            assert_eq!(panel.read(cx).position, DockPosition::Bottom);
11537        });
11538
11539        // Dispatch the `MoveFocusedPanelToNextPosition` action again, this time
11540        // around moving the panel to its initial position, the right dock.
11541        cx.dispatch_action(MoveFocusedPanelToNextPosition);
11542        workspace.update(cx, |workspace, cx| {
11543            assert!(workspace.right_dock().read(cx).is_open());
11544            assert_eq!(panel.read(cx).position, DockPosition::Right);
11545        });
11546
11547        // Remove focus from the panel, ensuring that, if the panel is not
11548        // focused, the `MoveFocusedPanelToNextPosition` action does not update
11549        // the panel's position, so the panel is still in the right dock.
11550        workspace.update_in(cx, |workspace, window, cx| {
11551            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11552        });
11553
11554        cx.dispatch_action(MoveFocusedPanelToNextPosition);
11555        workspace.update(cx, |workspace, cx| {
11556            assert!(workspace.right_dock().read(cx).is_open());
11557            assert_eq!(panel.read(cx).position, DockPosition::Right);
11558        });
11559    }
11560
11561    #[gpui::test]
11562    async fn test_moving_items_create_panes(cx: &mut TestAppContext) {
11563        init_test(cx);
11564
11565        let fs = FakeFs::new(cx.executor());
11566        let project = Project::test(fs, [], cx).await;
11567        let (workspace, cx) =
11568            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
11569
11570        let item_1 = cx.new(|cx| {
11571            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
11572        });
11573        workspace.update_in(cx, |workspace, window, cx| {
11574            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
11575            workspace.move_item_to_pane_in_direction(
11576                &MoveItemToPaneInDirection {
11577                    direction: SplitDirection::Right,
11578                    focus: true,
11579                    clone: false,
11580                },
11581                window,
11582                cx,
11583            );
11584            workspace.move_item_to_pane_at_index(
11585                &MoveItemToPane {
11586                    destination: 3,
11587                    focus: true,
11588                    clone: false,
11589                },
11590                window,
11591                cx,
11592            );
11593
11594            assert_eq!(workspace.panes.len(), 1, "No new panes were created");
11595            assert_eq!(
11596                pane_items_paths(&workspace.active_pane, cx),
11597                vec!["first.txt".to_string()],
11598                "Single item was not moved anywhere"
11599            );
11600        });
11601
11602        let item_2 = cx.new(|cx| {
11603            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "second.txt", cx)])
11604        });
11605        workspace.update_in(cx, |workspace, window, cx| {
11606            workspace.add_item_to_active_pane(Box::new(item_2), None, true, window, cx);
11607            assert_eq!(
11608                pane_items_paths(&workspace.panes[0], cx),
11609                vec!["first.txt".to_string(), "second.txt".to_string()],
11610            );
11611            workspace.move_item_to_pane_in_direction(
11612                &MoveItemToPaneInDirection {
11613                    direction: SplitDirection::Right,
11614                    focus: true,
11615                    clone: false,
11616                },
11617                window,
11618                cx,
11619            );
11620
11621            assert_eq!(workspace.panes.len(), 2, "A new pane should be created");
11622            assert_eq!(
11623                pane_items_paths(&workspace.panes[0], cx),
11624                vec!["first.txt".to_string()],
11625                "After moving, one item should be left in the original pane"
11626            );
11627            assert_eq!(
11628                pane_items_paths(&workspace.panes[1], cx),
11629                vec!["second.txt".to_string()],
11630                "New item should have been moved to the new pane"
11631            );
11632        });
11633
11634        let item_3 = cx.new(|cx| {
11635            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "third.txt", cx)])
11636        });
11637        workspace.update_in(cx, |workspace, window, cx| {
11638            let original_pane = workspace.panes[0].clone();
11639            workspace.set_active_pane(&original_pane, window, cx);
11640            workspace.add_item_to_active_pane(Box::new(item_3), None, true, window, cx);
11641            assert_eq!(workspace.panes.len(), 2, "No new panes were created");
11642            assert_eq!(
11643                pane_items_paths(&workspace.active_pane, cx),
11644                vec!["first.txt".to_string(), "third.txt".to_string()],
11645                "New pane should be ready to move one item out"
11646            );
11647
11648            workspace.move_item_to_pane_at_index(
11649                &MoveItemToPane {
11650                    destination: 3,
11651                    focus: true,
11652                    clone: false,
11653                },
11654                window,
11655                cx,
11656            );
11657            assert_eq!(workspace.panes.len(), 3, "A new pane should be created");
11658            assert_eq!(
11659                pane_items_paths(&workspace.active_pane, cx),
11660                vec!["first.txt".to_string()],
11661                "After moving, one item should be left in the original pane"
11662            );
11663            assert_eq!(
11664                pane_items_paths(&workspace.panes[1], cx),
11665                vec!["second.txt".to_string()],
11666                "Previously created pane should be unchanged"
11667            );
11668            assert_eq!(
11669                pane_items_paths(&workspace.panes[2], cx),
11670                vec!["third.txt".to_string()],
11671                "New item should have been moved to the new pane"
11672            );
11673        });
11674    }
11675
11676    #[gpui::test]
11677    async fn test_moving_items_can_clone_panes(cx: &mut TestAppContext) {
11678        init_test(cx);
11679
11680        let fs = FakeFs::new(cx.executor());
11681        let project = Project::test(fs, [], cx).await;
11682        let (workspace, cx) =
11683            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
11684
11685        let item_1 = cx.new(|cx| {
11686            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
11687        });
11688        workspace.update_in(cx, |workspace, window, cx| {
11689            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
11690            workspace.move_item_to_pane_in_direction(
11691                &MoveItemToPaneInDirection {
11692                    direction: SplitDirection::Right,
11693                    focus: true,
11694                    clone: true,
11695                },
11696                window,
11697                cx,
11698            );
11699        });
11700        cx.run_until_parked();
11701        workspace.update_in(cx, |workspace, window, cx| {
11702            workspace.move_item_to_pane_at_index(
11703                &MoveItemToPane {
11704                    destination: 3,
11705                    focus: true,
11706                    clone: true,
11707                },
11708                window,
11709                cx,
11710            );
11711        });
11712        cx.run_until_parked();
11713
11714        workspace.update(cx, |workspace, cx| {
11715            assert_eq!(workspace.panes.len(), 3, "Two new panes were created");
11716            for pane in workspace.panes() {
11717                assert_eq!(
11718                    pane_items_paths(pane, cx),
11719                    vec!["first.txt".to_string()],
11720                    "Single item exists in all panes"
11721                );
11722            }
11723        });
11724
11725        // verify that the active pane has been updated after waiting for the
11726        // pane focus event to fire and resolve
11727        workspace.read_with(cx, |workspace, _app| {
11728            assert_eq!(
11729                workspace.active_pane(),
11730                &workspace.panes[2],
11731                "The third pane should be the active one: {:?}",
11732                workspace.panes
11733            );
11734        })
11735    }
11736
11737    mod register_project_item_tests {
11738
11739        use super::*;
11740
11741        // View
11742        struct TestPngItemView {
11743            focus_handle: FocusHandle,
11744        }
11745        // Model
11746        struct TestPngItem {}
11747
11748        impl project::ProjectItem for TestPngItem {
11749            fn try_open(
11750                _project: &Entity<Project>,
11751                path: &ProjectPath,
11752                cx: &mut App,
11753            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
11754                if path.path.extension().unwrap() == "png" {
11755                    Some(cx.spawn(async move |cx| Ok(cx.new(|_| TestPngItem {}))))
11756                } else {
11757                    None
11758                }
11759            }
11760
11761            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
11762                None
11763            }
11764
11765            fn project_path(&self, _: &App) -> Option<ProjectPath> {
11766                None
11767            }
11768
11769            fn is_dirty(&self) -> bool {
11770                false
11771            }
11772        }
11773
11774        impl Item for TestPngItemView {
11775            type Event = ();
11776            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
11777                "".into()
11778            }
11779        }
11780        impl EventEmitter<()> for TestPngItemView {}
11781        impl Focusable for TestPngItemView {
11782            fn focus_handle(&self, _cx: &App) -> FocusHandle {
11783                self.focus_handle.clone()
11784            }
11785        }
11786
11787        impl Render for TestPngItemView {
11788            fn render(
11789                &mut self,
11790                _window: &mut Window,
11791                _cx: &mut Context<Self>,
11792            ) -> impl IntoElement {
11793                Empty
11794            }
11795        }
11796
11797        impl ProjectItem for TestPngItemView {
11798            type Item = TestPngItem;
11799
11800            fn for_project_item(
11801                _project: Entity<Project>,
11802                _pane: Option<&Pane>,
11803                _item: Entity<Self::Item>,
11804                _: &mut Window,
11805                cx: &mut Context<Self>,
11806            ) -> Self
11807            where
11808                Self: Sized,
11809            {
11810                Self {
11811                    focus_handle: cx.focus_handle(),
11812                }
11813            }
11814        }
11815
11816        // View
11817        struct TestIpynbItemView {
11818            focus_handle: FocusHandle,
11819        }
11820        // Model
11821        struct TestIpynbItem {}
11822
11823        impl project::ProjectItem for TestIpynbItem {
11824            fn try_open(
11825                _project: &Entity<Project>,
11826                path: &ProjectPath,
11827                cx: &mut App,
11828            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
11829                if path.path.extension().unwrap() == "ipynb" {
11830                    Some(cx.spawn(async move |cx| Ok(cx.new(|_| TestIpynbItem {}))))
11831                } else {
11832                    None
11833                }
11834            }
11835
11836            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
11837                None
11838            }
11839
11840            fn project_path(&self, _: &App) -> Option<ProjectPath> {
11841                None
11842            }
11843
11844            fn is_dirty(&self) -> bool {
11845                false
11846            }
11847        }
11848
11849        impl Item for TestIpynbItemView {
11850            type Event = ();
11851            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
11852                "".into()
11853            }
11854        }
11855        impl EventEmitter<()> for TestIpynbItemView {}
11856        impl Focusable for TestIpynbItemView {
11857            fn focus_handle(&self, _cx: &App) -> FocusHandle {
11858                self.focus_handle.clone()
11859            }
11860        }
11861
11862        impl Render for TestIpynbItemView {
11863            fn render(
11864                &mut self,
11865                _window: &mut Window,
11866                _cx: &mut Context<Self>,
11867            ) -> impl IntoElement {
11868                Empty
11869            }
11870        }
11871
11872        impl ProjectItem for TestIpynbItemView {
11873            type Item = TestIpynbItem;
11874
11875            fn for_project_item(
11876                _project: Entity<Project>,
11877                _pane: Option<&Pane>,
11878                _item: Entity<Self::Item>,
11879                _: &mut Window,
11880                cx: &mut Context<Self>,
11881            ) -> Self
11882            where
11883                Self: Sized,
11884            {
11885                Self {
11886                    focus_handle: cx.focus_handle(),
11887                }
11888            }
11889        }
11890
11891        struct TestAlternatePngItemView {
11892            focus_handle: FocusHandle,
11893        }
11894
11895        impl Item for TestAlternatePngItemView {
11896            type Event = ();
11897            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
11898                "".into()
11899            }
11900        }
11901
11902        impl EventEmitter<()> for TestAlternatePngItemView {}
11903        impl Focusable for TestAlternatePngItemView {
11904            fn focus_handle(&self, _cx: &App) -> FocusHandle {
11905                self.focus_handle.clone()
11906            }
11907        }
11908
11909        impl Render for TestAlternatePngItemView {
11910            fn render(
11911                &mut self,
11912                _window: &mut Window,
11913                _cx: &mut Context<Self>,
11914            ) -> impl IntoElement {
11915                Empty
11916            }
11917        }
11918
11919        impl ProjectItem for TestAlternatePngItemView {
11920            type Item = TestPngItem;
11921
11922            fn for_project_item(
11923                _project: Entity<Project>,
11924                _pane: Option<&Pane>,
11925                _item: Entity<Self::Item>,
11926                _: &mut Window,
11927                cx: &mut Context<Self>,
11928            ) -> Self
11929            where
11930                Self: Sized,
11931            {
11932                Self {
11933                    focus_handle: cx.focus_handle(),
11934                }
11935            }
11936        }
11937
11938        #[gpui::test]
11939        async fn test_register_project_item(cx: &mut TestAppContext) {
11940            init_test(cx);
11941
11942            cx.update(|cx| {
11943                register_project_item::<TestPngItemView>(cx);
11944                register_project_item::<TestIpynbItemView>(cx);
11945            });
11946
11947            let fs = FakeFs::new(cx.executor());
11948            fs.insert_tree(
11949                "/root1",
11950                json!({
11951                    "one.png": "BINARYDATAHERE",
11952                    "two.ipynb": "{ totally a notebook }",
11953                    "three.txt": "editing text, sure why not?"
11954                }),
11955            )
11956            .await;
11957
11958            let project = Project::test(fs, ["root1".as_ref()], cx).await;
11959            let (workspace, cx) =
11960                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
11961
11962            let worktree_id = project.update(cx, |project, cx| {
11963                project.worktrees(cx).next().unwrap().read(cx).id()
11964            });
11965
11966            let handle = workspace
11967                .update_in(cx, |workspace, window, cx| {
11968                    let project_path = (worktree_id, rel_path("one.png"));
11969                    workspace.open_path(project_path, None, true, window, cx)
11970                })
11971                .await
11972                .unwrap();
11973
11974            // Now we can check if the handle we got back errored or not
11975            assert_eq!(
11976                handle.to_any_view().entity_type(),
11977                TypeId::of::<TestPngItemView>()
11978            );
11979
11980            let handle = workspace
11981                .update_in(cx, |workspace, window, cx| {
11982                    let project_path = (worktree_id, rel_path("two.ipynb"));
11983                    workspace.open_path(project_path, None, true, window, cx)
11984                })
11985                .await
11986                .unwrap();
11987
11988            assert_eq!(
11989                handle.to_any_view().entity_type(),
11990                TypeId::of::<TestIpynbItemView>()
11991            );
11992
11993            let handle = workspace
11994                .update_in(cx, |workspace, window, cx| {
11995                    let project_path = (worktree_id, rel_path("three.txt"));
11996                    workspace.open_path(project_path, None, true, window, cx)
11997                })
11998                .await;
11999            assert!(handle.is_err());
12000        }
12001
12002        #[gpui::test]
12003        async fn test_register_project_item_two_enter_one_leaves(cx: &mut TestAppContext) {
12004            init_test(cx);
12005
12006            cx.update(|cx| {
12007                register_project_item::<TestPngItemView>(cx);
12008                register_project_item::<TestAlternatePngItemView>(cx);
12009            });
12010
12011            let fs = FakeFs::new(cx.executor());
12012            fs.insert_tree(
12013                "/root1",
12014                json!({
12015                    "one.png": "BINARYDATAHERE",
12016                    "two.ipynb": "{ totally a notebook }",
12017                    "three.txt": "editing text, sure why not?"
12018                }),
12019            )
12020            .await;
12021            let project = Project::test(fs, ["root1".as_ref()], cx).await;
12022            let (workspace, cx) =
12023                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
12024            let worktree_id = project.update(cx, |project, cx| {
12025                project.worktrees(cx).next().unwrap().read(cx).id()
12026            });
12027
12028            let handle = workspace
12029                .update_in(cx, |workspace, window, cx| {
12030                    let project_path = (worktree_id, rel_path("one.png"));
12031                    workspace.open_path(project_path, None, true, window, cx)
12032                })
12033                .await
12034                .unwrap();
12035
12036            // This _must_ be the second item registered
12037            assert_eq!(
12038                handle.to_any_view().entity_type(),
12039                TypeId::of::<TestAlternatePngItemView>()
12040            );
12041
12042            let handle = workspace
12043                .update_in(cx, |workspace, window, cx| {
12044                    let project_path = (worktree_id, rel_path("three.txt"));
12045                    workspace.open_path(project_path, None, true, window, cx)
12046                })
12047                .await;
12048            assert!(handle.is_err());
12049        }
12050    }
12051
12052    #[gpui::test]
12053    async fn test_status_bar_visibility(cx: &mut TestAppContext) {
12054        init_test(cx);
12055
12056        let fs = FakeFs::new(cx.executor());
12057        let project = Project::test(fs, [], cx).await;
12058        let (workspace, _cx) =
12059            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
12060
12061        // Test with status bar shown (default)
12062        workspace.read_with(cx, |workspace, cx| {
12063            let visible = workspace.status_bar_visible(cx);
12064            assert!(visible, "Status bar should be visible by default");
12065        });
12066
12067        // Test with status bar hidden
12068        cx.update_global(|store: &mut SettingsStore, cx| {
12069            store.update_user_settings(cx, |settings| {
12070                settings.status_bar.get_or_insert_default().show = Some(false);
12071            });
12072        });
12073
12074        workspace.read_with(cx, |workspace, cx| {
12075            let visible = workspace.status_bar_visible(cx);
12076            assert!(!visible, "Status bar should be hidden when show is false");
12077        });
12078
12079        // Test with status bar shown explicitly
12080        cx.update_global(|store: &mut SettingsStore, cx| {
12081            store.update_user_settings(cx, |settings| {
12082                settings.status_bar.get_or_insert_default().show = Some(true);
12083            });
12084        });
12085
12086        workspace.read_with(cx, |workspace, cx| {
12087            let visible = workspace.status_bar_visible(cx);
12088            assert!(visible, "Status bar should be visible when show is true");
12089        });
12090    }
12091
12092    fn pane_items_paths(pane: &Entity<Pane>, cx: &App) -> Vec<String> {
12093        pane.read(cx)
12094            .items()
12095            .flat_map(|item| {
12096                item.project_paths(cx)
12097                    .into_iter()
12098                    .map(|path| path.path.display(PathStyle::local()).into_owned())
12099            })
12100            .collect()
12101    }
12102
12103    pub fn init_test(cx: &mut TestAppContext) {
12104        cx.update(|cx| {
12105            let settings_store = SettingsStore::test(cx);
12106            cx.set_global(settings_store);
12107            theme::init(theme::LoadThemes::JustBase, cx);
12108        });
12109    }
12110
12111    fn dirty_project_item(id: u64, path: &str, cx: &mut App) -> Entity<TestProjectItem> {
12112        let item = TestProjectItem::new(id, path, cx);
12113        item.update(cx, |item, _| {
12114            item.is_dirty = true;
12115        });
12116        item
12117    }
12118}