workspace.rs

    1pub mod active_file_name;
    2pub mod dock;
    3pub mod history_manager;
    4pub mod invalid_item_view;
    5pub mod item;
    6mod modal_layer;
    7mod multi_workspace;
    8#[cfg(test)]
    9mod multi_workspace_tests;
   10pub mod notifications;
   11pub mod pane;
   12pub mod pane_group;
   13pub mod path_list {
   14    pub use util::path_list::{PathList, SerializedPathList};
   15}
   16mod persistence;
   17pub mod searchable;
   18mod security_modal;
   19pub mod shared_screen;
   20use db::smol::future::yield_now;
   21pub use shared_screen::SharedScreen;
   22pub mod focus_follows_mouse;
   23mod status_bar;
   24pub mod tasks;
   25mod theme_preview;
   26mod toast_layer;
   27mod toolbar;
   28pub mod welcome;
   29mod workspace_settings;
   30
   31pub use crate::notifications::NotificationFrame;
   32pub use dock::Panel;
   33pub use multi_workspace::{
   34    CloseWorkspaceSidebar, DraggedSidebar, FocusWorkspaceSidebar, MultiWorkspace,
   35    MultiWorkspaceEvent, NewThread, NextProject, NextThread, PreviousProject, PreviousThread,
   36    ProjectGroup, ShowFewerThreads, ShowMoreThreads, Sidebar, SidebarEvent, SidebarHandle,
   37    SidebarRenderState, SidebarSide, ToggleWorkspaceSidebar, sidebar_side_context_menu,
   38};
   39pub use path_list::{PathList, SerializedPathList};
   40pub use toast_layer::{ToastAction, ToastLayer, ToastView};
   41
   42use anyhow::{Context as _, Result, anyhow};
   43use client::{
   44    ChannelId, Client, ErrorExt, ParticipantIndex, Status, TypedEnvelope, User, UserStore,
   45    proto::{self, ErrorCode, PanelId, PeerId},
   46};
   47use collections::{HashMap, HashSet, hash_map};
   48use dock::{Dock, DockPosition, PanelButtons, PanelHandle, RESIZE_HANDLE_SIZE};
   49use fs::Fs;
   50use futures::{
   51    Future, FutureExt, StreamExt,
   52    channel::{
   53        mpsc::{self, UnboundedReceiver, UnboundedSender},
   54        oneshot,
   55    },
   56    future::{Shared, try_join_all},
   57};
   58use gpui::{
   59    Action, AnyEntity, AnyView, AnyWeakView, App, AsyncApp, AsyncWindowContext, Axis, Bounds,
   60    Context, CursorStyle, Decorations, DragMoveEvent, Entity, EntityId, EventEmitter, FocusHandle,
   61    Focusable, Global, HitboxBehavior, Hsla, KeyContext, Keystroke, ManagedView, MouseButton,
   62    PathPromptOptions, Point, PromptLevel, Render, ResizeEdge, Size, Stateful, Subscription,
   63    SystemWindowTabController, Task, Tiling, WeakEntity, WindowBounds, WindowHandle, WindowId,
   64    WindowOptions, actions, canvas, point, relative, size, transparent_black,
   65};
   66pub use history_manager::*;
   67pub use item::{
   68    FollowableItem, FollowableItemHandle, Item, ItemHandle, ItemSettings, PreviewTabsSettings,
   69    ProjectItem, SerializableItem, SerializableItemHandle, WeakItemHandle,
   70};
   71use itertools::Itertools;
   72use language::{Buffer, LanguageRegistry, Rope, language_settings::all_language_settings};
   73pub use modal_layer::*;
   74use node_runtime::NodeRuntime;
   75use notifications::{
   76    DetachAndPromptErr, Notifications, dismiss_app_notification,
   77    simple_message_notification::MessageNotification,
   78};
   79pub use pane::*;
   80pub use pane_group::{
   81    ActivePaneDecorator, HANDLE_HITBOX_SIZE, Member, PaneAxis, PaneGroup, PaneRenderContext,
   82    SplitDirection,
   83};
   84use persistence::{SerializedWindowBounds, model::SerializedWorkspace};
   85pub use persistence::{
   86    WorkspaceDb, delete_unloaded_items,
   87    model::{
   88        DockStructure, ItemId, MultiWorkspaceState, SerializedMultiWorkspace,
   89        SerializedProjectGroup, SerializedWorkspaceLocation, SessionWorkspace,
   90    },
   91    read_serialized_multi_workspaces, resolve_worktree_workspaces,
   92};
   93use postage::stream::Stream;
   94use project::{
   95    DirectoryLister, Project, ProjectEntryId, ProjectGroupKey, ProjectPath, ResolvedPath, Worktree,
   96    WorktreeId, WorktreeSettings,
   97    debugger::{breakpoint_store::BreakpointStoreEvent, session::ThreadStatus},
   98    project_settings::ProjectSettings,
   99    toolchain_store::ToolchainStoreEvent,
  100    trusted_worktrees::{RemoteHostLocation, TrustedWorktrees, TrustedWorktreesEvent},
  101};
  102use remote::{
  103    RemoteClientDelegate, RemoteConnection, RemoteConnectionOptions,
  104    remote_client::ConnectionIdentifier,
  105};
  106use schemars::JsonSchema;
  107use serde::Deserialize;
  108use session::AppSession;
  109use settings::{
  110    CenteredPaddingSettings, Settings, SettingsLocation, SettingsStore, update_settings_file,
  111};
  112
  113use sqlez::{
  114    bindable::{Bind, Column, StaticColumnCount},
  115    statement::Statement,
  116};
  117use status_bar::StatusBar;
  118pub use status_bar::StatusItemView;
  119use std::{
  120    any::TypeId,
  121    borrow::Cow,
  122    cell::RefCell,
  123    cmp,
  124    collections::VecDeque,
  125    env,
  126    hash::Hash,
  127    path::{Path, PathBuf},
  128    process::ExitStatus,
  129    rc::Rc,
  130    sync::{
  131        Arc, LazyLock,
  132        atomic::{AtomicBool, AtomicUsize},
  133    },
  134    time::Duration,
  135};
  136use task::{DebugScenario, SharedTaskContext, SpawnInTerminal};
  137use theme::{ActiveTheme, SystemAppearance};
  138use theme_settings::ThemeSettings;
  139pub use toolbar::{
  140    PaneSearchBarCallbacks, Toolbar, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView,
  141};
  142pub use ui;
  143use ui::{Window, prelude::*};
  144use util::{
  145    ResultExt, TryFutureExt,
  146    paths::{PathStyle, SanitizedPath},
  147    rel_path::RelPath,
  148    serde::default_true,
  149};
  150use uuid::Uuid;
  151pub use workspace_settings::{
  152    AutosaveSetting, BottomDockLayout, FocusFollowsMouse, RestoreOnStartupBehavior,
  153    StatusBarSettings, TabBarSettings, WorkspaceSettings,
  154};
  155use zed_actions::{Spawn, feedback::FileBugReport, theme::ToggleMode};
  156
  157use crate::{dock::PanelSizeState, item::ItemBufferKind, notifications::NotificationId};
  158use crate::{
  159    persistence::{
  160        SerializedAxis,
  161        model::{DockData, SerializedItem, SerializedPane, SerializedPaneGroup},
  162    },
  163    security_modal::SecurityModal,
  164};
  165
  166pub const SERIALIZATION_THROTTLE_TIME: Duration = Duration::from_millis(200);
  167
  168static ZED_WINDOW_SIZE: LazyLock<Option<Size<Pixels>>> = LazyLock::new(|| {
  169    env::var("ZED_WINDOW_SIZE")
  170        .ok()
  171        .as_deref()
  172        .and_then(parse_pixel_size_env_var)
  173});
  174
  175static ZED_WINDOW_POSITION: LazyLock<Option<Point<Pixels>>> = LazyLock::new(|| {
  176    env::var("ZED_WINDOW_POSITION")
  177        .ok()
  178        .as_deref()
  179        .and_then(parse_pixel_position_env_var)
  180});
  181
  182pub trait TerminalProvider {
  183    fn spawn(
  184        &self,
  185        task: SpawnInTerminal,
  186        window: &mut Window,
  187        cx: &mut App,
  188    ) -> Task<Option<Result<ExitStatus>>>;
  189}
  190
  191pub trait DebuggerProvider {
  192    // `active_buffer` is used to resolve build task's name against language-specific tasks.
  193    fn start_session(
  194        &self,
  195        definition: DebugScenario,
  196        task_context: SharedTaskContext,
  197        active_buffer: Option<Entity<Buffer>>,
  198        worktree_id: Option<WorktreeId>,
  199        window: &mut Window,
  200        cx: &mut App,
  201    );
  202
  203    fn spawn_task_or_modal(
  204        &self,
  205        workspace: &mut Workspace,
  206        action: &Spawn,
  207        window: &mut Window,
  208        cx: &mut Context<Workspace>,
  209    );
  210
  211    fn task_scheduled(&self, cx: &mut App);
  212    fn debug_scenario_scheduled(&self, cx: &mut App);
  213    fn debug_scenario_scheduled_last(&self, cx: &App) -> bool;
  214
  215    fn active_thread_state(&self, cx: &App) -> Option<ThreadStatus>;
  216}
  217
  218/// Opens a file or directory.
  219#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  220#[action(namespace = workspace)]
  221pub struct Open {
  222    /// When true, opens in a new window. When false, adds to the current
  223    /// window as a new workspace (multi-workspace).
  224    #[serde(default = "Open::default_create_new_window")]
  225    pub create_new_window: bool,
  226}
  227
  228impl Open {
  229    pub const DEFAULT: Self = Self {
  230        create_new_window: true,
  231    };
  232
  233    /// Used by `#[serde(default)]` on the `create_new_window` field so that
  234    /// the serde default and `Open::DEFAULT` stay in sync.
  235    fn default_create_new_window() -> bool {
  236        Self::DEFAULT.create_new_window
  237    }
  238}
  239
  240impl Default for Open {
  241    fn default() -> Self {
  242        Self::DEFAULT
  243    }
  244}
  245
  246actions!(
  247    workspace,
  248    [
  249        /// Activates the next pane in the workspace.
  250        ActivateNextPane,
  251        /// Activates the previous pane in the workspace.
  252        ActivatePreviousPane,
  253        /// Activates the last pane in the workspace.
  254        ActivateLastPane,
  255        /// Switches to the next window.
  256        ActivateNextWindow,
  257        /// Switches to the previous window.
  258        ActivatePreviousWindow,
  259        /// Adds a folder to the current project.
  260        AddFolderToProject,
  261        /// Clears all notifications.
  262        ClearAllNotifications,
  263        /// Clears all navigation history, including forward/backward navigation, recently opened files, and recently closed tabs. **This action is irreversible**.
  264        ClearNavigationHistory,
  265        /// Closes the active dock.
  266        CloseActiveDock,
  267        /// Closes all docks.
  268        CloseAllDocks,
  269        /// Toggles all docks.
  270        ToggleAllDocks,
  271        /// Closes the current window.
  272        CloseWindow,
  273        /// Closes the current project.
  274        CloseProject,
  275        /// Opens the feedback dialog.
  276        Feedback,
  277        /// Follows the next collaborator in the session.
  278        FollowNextCollaborator,
  279        /// Moves the focused panel to the next position.
  280        MoveFocusedPanelToNextPosition,
  281        /// Creates a new file.
  282        NewFile,
  283        /// Creates a new file in a vertical split.
  284        NewFileSplitVertical,
  285        /// Creates a new file in a horizontal split.
  286        NewFileSplitHorizontal,
  287        /// Opens a new search.
  288        NewSearch,
  289        /// Opens a new window.
  290        NewWindow,
  291        /// Opens multiple files.
  292        OpenFiles,
  293        /// Opens the current location in terminal.
  294        OpenInTerminal,
  295        /// Opens the component preview.
  296        OpenComponentPreview,
  297        /// Reloads the active item.
  298        ReloadActiveItem,
  299        /// Resets the active dock to its default size.
  300        ResetActiveDockSize,
  301        /// Resets all open docks to their default sizes.
  302        ResetOpenDocksSize,
  303        /// Reloads the application
  304        Reload,
  305        /// Saves the current file with a new name.
  306        SaveAs,
  307        /// Saves without formatting.
  308        SaveWithoutFormat,
  309        /// Shuts down all debug adapters.
  310        ShutdownDebugAdapters,
  311        /// Suppresses the current notification.
  312        SuppressNotification,
  313        /// Toggles the bottom dock.
  314        ToggleBottomDock,
  315        /// Toggles centered layout mode.
  316        ToggleCenteredLayout,
  317        /// Toggles edit prediction feature globally for all files.
  318        ToggleEditPrediction,
  319        /// Toggles the left dock.
  320        ToggleLeftDock,
  321        /// Toggles the right dock.
  322        ToggleRightDock,
  323        /// Toggles zoom on the active pane.
  324        ToggleZoom,
  325        /// Toggles read-only mode for the active item (if supported by that item).
  326        ToggleReadOnlyFile,
  327        /// Zooms in on the active pane.
  328        ZoomIn,
  329        /// Zooms out of the active pane.
  330        ZoomOut,
  331        /// If any worktrees are in restricted mode, shows a modal with possible actions.
  332        /// If the modal is shown already, closes it without trusting any worktree.
  333        ToggleWorktreeSecurity,
  334        /// Clears all trusted worktrees, placing them in restricted mode on next open.
  335        /// Requires restart to take effect on already opened projects.
  336        ClearTrustedWorktrees,
  337        /// Stops following a collaborator.
  338        Unfollow,
  339        /// Restores the banner.
  340        RestoreBanner,
  341        /// Toggles expansion of the selected item.
  342        ToggleExpandItem,
  343    ]
  344);
  345
  346/// Activates a specific pane by its index.
  347#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  348#[action(namespace = workspace)]
  349pub struct ActivatePane(pub usize);
  350
  351/// Moves an item to a specific pane by index.
  352#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  353#[action(namespace = workspace)]
  354#[serde(deny_unknown_fields)]
  355pub struct MoveItemToPane {
  356    #[serde(default = "default_1")]
  357    pub destination: usize,
  358    #[serde(default = "default_true")]
  359    pub focus: bool,
  360    #[serde(default)]
  361    pub clone: bool,
  362}
  363
  364fn default_1() -> usize {
  365    1
  366}
  367
  368/// Moves an item to a pane in the specified direction.
  369#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  370#[action(namespace = workspace)]
  371#[serde(deny_unknown_fields)]
  372pub struct MoveItemToPaneInDirection {
  373    #[serde(default = "default_right")]
  374    pub direction: SplitDirection,
  375    #[serde(default = "default_true")]
  376    pub focus: bool,
  377    #[serde(default)]
  378    pub clone: bool,
  379}
  380
  381/// Creates a new file in a split of the desired direction.
  382#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  383#[action(namespace = workspace)]
  384#[serde(deny_unknown_fields)]
  385pub struct NewFileSplit(pub SplitDirection);
  386
  387fn default_right() -> SplitDirection {
  388    SplitDirection::Right
  389}
  390
  391/// Saves all open files in the workspace.
  392#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  393#[action(namespace = workspace)]
  394#[serde(deny_unknown_fields)]
  395pub struct SaveAll {
  396    #[serde(default)]
  397    pub save_intent: Option<SaveIntent>,
  398}
  399
  400/// Saves the current file with the specified options.
  401#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  402#[action(namespace = workspace)]
  403#[serde(deny_unknown_fields)]
  404pub struct Save {
  405    #[serde(default)]
  406    pub save_intent: Option<SaveIntent>,
  407}
  408
  409/// Moves Focus to the central panes in the workspace.
  410#[derive(Clone, Debug, PartialEq, Eq, Action)]
  411#[action(namespace = workspace)]
  412pub struct FocusCenterPane;
  413
  414///  Closes all items and panes in the workspace.
  415#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  416#[action(namespace = workspace)]
  417#[serde(deny_unknown_fields)]
  418pub struct CloseAllItemsAndPanes {
  419    #[serde(default)]
  420    pub save_intent: Option<SaveIntent>,
  421}
  422
  423/// Closes all inactive tabs and panes in the workspace.
  424#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  425#[action(namespace = workspace)]
  426#[serde(deny_unknown_fields)]
  427pub struct CloseInactiveTabsAndPanes {
  428    #[serde(default)]
  429    pub save_intent: Option<SaveIntent>,
  430}
  431
  432/// Closes the active item across all panes.
  433#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  434#[action(namespace = workspace)]
  435#[serde(deny_unknown_fields)]
  436pub struct CloseItemInAllPanes {
  437    #[serde(default)]
  438    pub save_intent: Option<SaveIntent>,
  439    #[serde(default)]
  440    pub close_pinned: bool,
  441}
  442
  443/// Sends a sequence of keystrokes to the active element.
  444#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  445#[action(namespace = workspace)]
  446pub struct SendKeystrokes(pub String);
  447
  448actions!(
  449    project_symbols,
  450    [
  451        /// Toggles the project symbols search.
  452        #[action(name = "Toggle")]
  453        ToggleProjectSymbols
  454    ]
  455);
  456
  457/// Toggles the file finder interface.
  458#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  459#[action(namespace = file_finder, name = "Toggle")]
  460#[serde(deny_unknown_fields)]
  461pub struct ToggleFileFinder {
  462    #[serde(default)]
  463    pub separate_history: bool,
  464}
  465
  466/// Opens a new terminal in the center.
  467#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  468#[action(namespace = workspace)]
  469#[serde(deny_unknown_fields)]
  470pub struct NewCenterTerminal {
  471    /// If true, creates a local terminal even in remote projects.
  472    #[serde(default)]
  473    pub local: bool,
  474}
  475
  476/// Opens a new terminal.
  477#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  478#[action(namespace = workspace)]
  479#[serde(deny_unknown_fields)]
  480pub struct NewTerminal {
  481    /// If true, creates a local terminal even in remote projects.
  482    #[serde(default)]
  483    pub local: bool,
  484}
  485
  486/// Increases size of a currently focused dock by a given amount of pixels.
  487#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  488#[action(namespace = workspace)]
  489#[serde(deny_unknown_fields)]
  490pub struct IncreaseActiveDockSize {
  491    /// For 0px parameter, uses UI font size value.
  492    #[serde(default)]
  493    pub px: u32,
  494}
  495
  496/// Decreases size of a currently focused dock by a given amount of pixels.
  497#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  498#[action(namespace = workspace)]
  499#[serde(deny_unknown_fields)]
  500pub struct DecreaseActiveDockSize {
  501    /// For 0px parameter, uses UI font size value.
  502    #[serde(default)]
  503    pub px: u32,
  504}
  505
  506/// Increases size of all currently visible docks uniformly, by a given amount of pixels.
  507#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  508#[action(namespace = workspace)]
  509#[serde(deny_unknown_fields)]
  510pub struct IncreaseOpenDocksSize {
  511    /// For 0px parameter, uses UI font size value.
  512    #[serde(default)]
  513    pub px: u32,
  514}
  515
  516/// Decreases size of all currently visible docks uniformly, by a given amount of pixels.
  517#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  518#[action(namespace = workspace)]
  519#[serde(deny_unknown_fields)]
  520pub struct DecreaseOpenDocksSize {
  521    /// For 0px parameter, uses UI font size value.
  522    #[serde(default)]
  523    pub px: u32,
  524}
  525
  526actions!(
  527    workspace,
  528    [
  529        /// Activates the pane to the left.
  530        ActivatePaneLeft,
  531        /// Activates the pane to the right.
  532        ActivatePaneRight,
  533        /// Activates the pane above.
  534        ActivatePaneUp,
  535        /// Activates the pane below.
  536        ActivatePaneDown,
  537        /// Swaps the current pane with the one to the left.
  538        SwapPaneLeft,
  539        /// Swaps the current pane with the one to the right.
  540        SwapPaneRight,
  541        /// Swaps the current pane with the one above.
  542        SwapPaneUp,
  543        /// Swaps the current pane with the one below.
  544        SwapPaneDown,
  545        // Swaps the current pane with the first available adjacent pane (searching in order: below, above, right, left) and activates that pane.
  546        SwapPaneAdjacent,
  547        /// Move the current pane to be at the far left.
  548        MovePaneLeft,
  549        /// Move the current pane to be at the far right.
  550        MovePaneRight,
  551        /// Move the current pane to be at the very top.
  552        MovePaneUp,
  553        /// Move the current pane to be at the very bottom.
  554        MovePaneDown,
  555    ]
  556);
  557
  558#[derive(PartialEq, Eq, Debug)]
  559pub enum CloseIntent {
  560    /// Quit the program entirely.
  561    Quit,
  562    /// Close a window.
  563    CloseWindow,
  564    /// Replace the workspace in an existing window.
  565    ReplaceWindow,
  566}
  567
  568#[derive(Clone)]
  569pub struct Toast {
  570    id: NotificationId,
  571    msg: Cow<'static, str>,
  572    autohide: bool,
  573    on_click: Option<(Cow<'static, str>, Arc<dyn Fn(&mut Window, &mut App)>)>,
  574}
  575
  576impl Toast {
  577    pub fn new<I: Into<Cow<'static, str>>>(id: NotificationId, msg: I) -> Self {
  578        Toast {
  579            id,
  580            msg: msg.into(),
  581            on_click: None,
  582            autohide: false,
  583        }
  584    }
  585
  586    pub fn on_click<F, M>(mut self, message: M, on_click: F) -> Self
  587    where
  588        M: Into<Cow<'static, str>>,
  589        F: Fn(&mut Window, &mut App) + 'static,
  590    {
  591        self.on_click = Some((message.into(), Arc::new(on_click)));
  592        self
  593    }
  594
  595    pub fn autohide(mut self) -> Self {
  596        self.autohide = true;
  597        self
  598    }
  599}
  600
  601impl PartialEq for Toast {
  602    fn eq(&self, other: &Self) -> bool {
  603        self.id == other.id
  604            && self.msg == other.msg
  605            && self.on_click.is_some() == other.on_click.is_some()
  606    }
  607}
  608
  609/// Opens a new terminal with the specified working directory.
  610#[derive(Debug, Default, Clone, Deserialize, PartialEq, JsonSchema, Action)]
  611#[action(namespace = workspace)]
  612#[serde(deny_unknown_fields)]
  613pub struct OpenTerminal {
  614    pub working_directory: PathBuf,
  615    /// If true, creates a local terminal even in remote projects.
  616    #[serde(default)]
  617    pub local: bool,
  618}
  619
  620#[derive(
  621    Clone,
  622    Copy,
  623    Debug,
  624    Default,
  625    Hash,
  626    PartialEq,
  627    Eq,
  628    PartialOrd,
  629    Ord,
  630    serde::Serialize,
  631    serde::Deserialize,
  632)]
  633pub struct WorkspaceId(i64);
  634
  635impl WorkspaceId {
  636    pub fn from_i64(value: i64) -> Self {
  637        Self(value)
  638    }
  639}
  640
  641impl StaticColumnCount for WorkspaceId {}
  642impl Bind for WorkspaceId {
  643    fn bind(&self, statement: &Statement, start_index: i32) -> Result<i32> {
  644        self.0.bind(statement, start_index)
  645    }
  646}
  647impl Column for WorkspaceId {
  648    fn column(statement: &mut Statement, start_index: i32) -> Result<(Self, i32)> {
  649        i64::column(statement, start_index)
  650            .map(|(i, next_index)| (Self(i), next_index))
  651            .with_context(|| format!("Failed to read WorkspaceId at index {start_index}"))
  652    }
  653}
  654impl From<WorkspaceId> for i64 {
  655    fn from(val: WorkspaceId) -> Self {
  656        val.0
  657    }
  658}
  659
  660fn prompt_and_open_paths(
  661    app_state: Arc<AppState>,
  662    options: PathPromptOptions,
  663    create_new_window: bool,
  664    cx: &mut App,
  665) {
  666    if let Some(workspace_window) = local_workspace_windows(cx).into_iter().next() {
  667        workspace_window
  668            .update(cx, |multi_workspace, window, cx| {
  669                let workspace = multi_workspace.workspace().clone();
  670                workspace.update(cx, |workspace, cx| {
  671                    prompt_for_open_path_and_open(
  672                        workspace,
  673                        app_state,
  674                        options,
  675                        create_new_window,
  676                        window,
  677                        cx,
  678                    );
  679                });
  680            })
  681            .ok();
  682    } else {
  683        let task = Workspace::new_local(
  684            Vec::new(),
  685            app_state.clone(),
  686            None,
  687            None,
  688            None,
  689            OpenMode::Activate,
  690            cx,
  691        );
  692        cx.spawn(async move |cx| {
  693            let OpenResult { window, .. } = task.await?;
  694            window.update(cx, |multi_workspace, window, cx| {
  695                window.activate_window();
  696                let workspace = multi_workspace.workspace().clone();
  697                workspace.update(cx, |workspace, cx| {
  698                    prompt_for_open_path_and_open(
  699                        workspace,
  700                        app_state,
  701                        options,
  702                        create_new_window,
  703                        window,
  704                        cx,
  705                    );
  706                });
  707            })?;
  708            anyhow::Ok(())
  709        })
  710        .detach_and_log_err(cx);
  711    }
  712}
  713
  714pub fn prompt_for_open_path_and_open(
  715    workspace: &mut Workspace,
  716    app_state: Arc<AppState>,
  717    options: PathPromptOptions,
  718    create_new_window: bool,
  719    window: &mut Window,
  720    cx: &mut Context<Workspace>,
  721) {
  722    let paths = workspace.prompt_for_open_path(
  723        options,
  724        DirectoryLister::Local(workspace.project().clone(), app_state.fs.clone()),
  725        window,
  726        cx,
  727    );
  728    let multi_workspace_handle = window.window_handle().downcast::<MultiWorkspace>();
  729    cx.spawn_in(window, async move |this, cx| {
  730        let Some(paths) = paths.await.log_err().flatten() else {
  731            return;
  732        };
  733        if !create_new_window {
  734            if let Some(handle) = multi_workspace_handle {
  735                if let Some(task) = handle
  736                    .update(cx, |multi_workspace, window, cx| {
  737                        multi_workspace.open_project(paths, OpenMode::Activate, window, cx)
  738                    })
  739                    .log_err()
  740                {
  741                    task.await.log_err();
  742                }
  743                return;
  744            }
  745        }
  746        if let Some(task) = this
  747            .update_in(cx, |this, window, cx| {
  748                this.open_workspace_for_paths(OpenMode::NewWindow, paths, window, cx)
  749            })
  750            .log_err()
  751        {
  752            task.await.log_err();
  753        }
  754    })
  755    .detach();
  756}
  757
  758pub fn init(app_state: Arc<AppState>, cx: &mut App) {
  759    component::init();
  760    theme_preview::init(cx);
  761    toast_layer::init(cx);
  762    history_manager::init(app_state.fs.clone(), cx);
  763
  764    cx.on_action(|_: &CloseWindow, cx| Workspace::close_global(cx))
  765        .on_action(|_: &Reload, cx| reload(cx))
  766        .on_action(|action: &Open, cx: &mut App| {
  767            let app_state = AppState::global(cx);
  768            prompt_and_open_paths(
  769                app_state,
  770                PathPromptOptions {
  771                    files: true,
  772                    directories: true,
  773                    multiple: true,
  774                    prompt: None,
  775                },
  776                action.create_new_window,
  777                cx,
  778            );
  779        })
  780        .on_action(|_: &OpenFiles, cx: &mut App| {
  781            let directories = cx.can_select_mixed_files_and_dirs();
  782            let app_state = AppState::global(cx);
  783            prompt_and_open_paths(
  784                app_state,
  785                PathPromptOptions {
  786                    files: true,
  787                    directories,
  788                    multiple: true,
  789                    prompt: None,
  790                },
  791                true,
  792                cx,
  793            );
  794        });
  795}
  796
  797type BuildProjectItemFn =
  798    fn(AnyEntity, Entity<Project>, Option<&Pane>, &mut Window, &mut App) -> Box<dyn ItemHandle>;
  799
  800type BuildProjectItemForPathFn =
  801    fn(
  802        &Entity<Project>,
  803        &ProjectPath,
  804        &mut Window,
  805        &mut App,
  806    ) -> Option<Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>>>;
  807
  808#[derive(Clone, Default)]
  809struct ProjectItemRegistry {
  810    build_project_item_fns_by_type: HashMap<TypeId, BuildProjectItemFn>,
  811    build_project_item_for_path_fns: Vec<BuildProjectItemForPathFn>,
  812}
  813
  814impl ProjectItemRegistry {
  815    fn register<T: ProjectItem>(&mut self) {
  816        self.build_project_item_fns_by_type.insert(
  817            TypeId::of::<T::Item>(),
  818            |item, project, pane, window, cx| {
  819                let item = item.downcast().unwrap();
  820                Box::new(cx.new(|cx| T::for_project_item(project, pane, item, window, cx)))
  821                    as Box<dyn ItemHandle>
  822            },
  823        );
  824        self.build_project_item_for_path_fns
  825            .push(|project, project_path, window, cx| {
  826                let project_path = project_path.clone();
  827                let is_file = project
  828                    .read(cx)
  829                    .entry_for_path(&project_path, cx)
  830                    .is_some_and(|entry| entry.is_file());
  831                let entry_abs_path = project.read(cx).absolute_path(&project_path, cx);
  832                let is_local = project.read(cx).is_local();
  833                let project_item =
  834                    <T::Item as project::ProjectItem>::try_open(project, &project_path, cx)?;
  835                let project = project.clone();
  836                Some(window.spawn(cx, async move |cx| {
  837                    match project_item.await.with_context(|| {
  838                        format!(
  839                            "opening project path {:?}",
  840                            entry_abs_path.as_deref().unwrap_or(&project_path.path.as_std_path())
  841                        )
  842                    }) {
  843                        Ok(project_item) => {
  844                            let project_item = project_item;
  845                            let project_entry_id: Option<ProjectEntryId> =
  846                                project_item.read_with(cx, project::ProjectItem::entry_id);
  847                            let build_workspace_item = Box::new(
  848                                |pane: &mut Pane, window: &mut Window, cx: &mut Context<Pane>| {
  849                                    Box::new(cx.new(|cx| {
  850                                        T::for_project_item(
  851                                            project,
  852                                            Some(pane),
  853                                            project_item,
  854                                            window,
  855                                            cx,
  856                                        )
  857                                    })) as Box<dyn ItemHandle>
  858                                },
  859                            ) as Box<_>;
  860                            Ok((project_entry_id, build_workspace_item))
  861                        }
  862                        Err(e) => {
  863                            log::warn!("Failed to open a project item: {e:#}");
  864                            if e.error_code() == ErrorCode::Internal {
  865                                if let Some(abs_path) =
  866                                    entry_abs_path.as_deref().filter(|_| is_file)
  867                                {
  868                                    if let Some(broken_project_item_view) =
  869                                        cx.update(|window, cx| {
  870                                            T::for_broken_project_item(
  871                                                abs_path, is_local, &e, window, cx,
  872                                            )
  873                                        })?
  874                                    {
  875                                        let build_workspace_item = Box::new(
  876                                            move |_: &mut Pane, _: &mut Window, cx: &mut Context<Pane>| {
  877                                                cx.new(|_| broken_project_item_view).boxed_clone()
  878                                            },
  879                                        )
  880                                        as Box<_>;
  881                                        return Ok((None, build_workspace_item));
  882                                    }
  883                                }
  884                            }
  885                            Err(e)
  886                        }
  887                    }
  888                }))
  889            });
  890    }
  891
  892    fn open_path(
  893        &self,
  894        project: &Entity<Project>,
  895        path: &ProjectPath,
  896        window: &mut Window,
  897        cx: &mut App,
  898    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
  899        let Some(open_project_item) = self
  900            .build_project_item_for_path_fns
  901            .iter()
  902            .rev()
  903            .find_map(|open_project_item| open_project_item(project, path, window, cx))
  904        else {
  905            return Task::ready(Err(anyhow!("cannot open file {:?}", path.path)));
  906        };
  907        open_project_item
  908    }
  909
  910    fn build_item<T: project::ProjectItem>(
  911        &self,
  912        item: Entity<T>,
  913        project: Entity<Project>,
  914        pane: Option<&Pane>,
  915        window: &mut Window,
  916        cx: &mut App,
  917    ) -> Option<Box<dyn ItemHandle>> {
  918        let build = self
  919            .build_project_item_fns_by_type
  920            .get(&TypeId::of::<T>())?;
  921        Some(build(item.into_any(), project, pane, window, cx))
  922    }
  923}
  924
  925type WorkspaceItemBuilder =
  926    Box<dyn FnOnce(&mut Pane, &mut Window, &mut Context<Pane>) -> Box<dyn ItemHandle>>;
  927
  928impl Global for ProjectItemRegistry {}
  929
  930/// Registers a [ProjectItem] for the app. When opening a file, all the registered
  931/// items will get a chance to open the file, starting from the project item that
  932/// was added last.
  933pub fn register_project_item<I: ProjectItem>(cx: &mut App) {
  934    cx.default_global::<ProjectItemRegistry>().register::<I>();
  935}
  936
  937#[derive(Default)]
  938pub struct FollowableViewRegistry(HashMap<TypeId, FollowableViewDescriptor>);
  939
  940struct FollowableViewDescriptor {
  941    from_state_proto: fn(
  942        Entity<Workspace>,
  943        ViewId,
  944        &mut Option<proto::view::Variant>,
  945        &mut Window,
  946        &mut App,
  947    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>>,
  948    to_followable_view: fn(&AnyView) -> Box<dyn FollowableItemHandle>,
  949}
  950
  951impl Global for FollowableViewRegistry {}
  952
  953impl FollowableViewRegistry {
  954    pub fn register<I: FollowableItem>(cx: &mut App) {
  955        cx.default_global::<Self>().0.insert(
  956            TypeId::of::<I>(),
  957            FollowableViewDescriptor {
  958                from_state_proto: |workspace, id, state, window, cx| {
  959                    I::from_state_proto(workspace, id, state, window, cx).map(|task| {
  960                        cx.foreground_executor()
  961                            .spawn(async move { Ok(Box::new(task.await?) as Box<_>) })
  962                    })
  963                },
  964                to_followable_view: |view| Box::new(view.clone().downcast::<I>().unwrap()),
  965            },
  966        );
  967    }
  968
  969    pub fn from_state_proto(
  970        workspace: Entity<Workspace>,
  971        view_id: ViewId,
  972        mut state: Option<proto::view::Variant>,
  973        window: &mut Window,
  974        cx: &mut App,
  975    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>> {
  976        cx.update_default_global(|this: &mut Self, cx| {
  977            this.0.values().find_map(|descriptor| {
  978                (descriptor.from_state_proto)(workspace.clone(), view_id, &mut state, window, cx)
  979            })
  980        })
  981    }
  982
  983    pub fn to_followable_view(
  984        view: impl Into<AnyView>,
  985        cx: &App,
  986    ) -> Option<Box<dyn FollowableItemHandle>> {
  987        let this = cx.try_global::<Self>()?;
  988        let view = view.into();
  989        let descriptor = this.0.get(&view.entity_type())?;
  990        Some((descriptor.to_followable_view)(&view))
  991    }
  992}
  993
  994#[derive(Copy, Clone)]
  995struct SerializableItemDescriptor {
  996    deserialize: fn(
  997        Entity<Project>,
  998        WeakEntity<Workspace>,
  999        WorkspaceId,
 1000        ItemId,
 1001        &mut Window,
 1002        &mut Context<Pane>,
 1003    ) -> Task<Result<Box<dyn ItemHandle>>>,
 1004    cleanup: fn(WorkspaceId, Vec<ItemId>, &mut Window, &mut App) -> Task<Result<()>>,
 1005    view_to_serializable_item: fn(AnyView) -> Box<dyn SerializableItemHandle>,
 1006}
 1007
 1008#[derive(Default)]
 1009struct SerializableItemRegistry {
 1010    descriptors_by_kind: HashMap<Arc<str>, SerializableItemDescriptor>,
 1011    descriptors_by_type: HashMap<TypeId, SerializableItemDescriptor>,
 1012}
 1013
 1014impl Global for SerializableItemRegistry {}
 1015
 1016impl SerializableItemRegistry {
 1017    fn deserialize(
 1018        item_kind: &str,
 1019        project: Entity<Project>,
 1020        workspace: WeakEntity<Workspace>,
 1021        workspace_id: WorkspaceId,
 1022        item_item: ItemId,
 1023        window: &mut Window,
 1024        cx: &mut Context<Pane>,
 1025    ) -> Task<Result<Box<dyn ItemHandle>>> {
 1026        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
 1027            return Task::ready(Err(anyhow!(
 1028                "cannot deserialize {}, descriptor not found",
 1029                item_kind
 1030            )));
 1031        };
 1032
 1033        (descriptor.deserialize)(project, workspace, workspace_id, item_item, window, cx)
 1034    }
 1035
 1036    fn cleanup(
 1037        item_kind: &str,
 1038        workspace_id: WorkspaceId,
 1039        loaded_items: Vec<ItemId>,
 1040        window: &mut Window,
 1041        cx: &mut App,
 1042    ) -> Task<Result<()>> {
 1043        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
 1044            return Task::ready(Err(anyhow!(
 1045                "cannot cleanup {}, descriptor not found",
 1046                item_kind
 1047            )));
 1048        };
 1049
 1050        (descriptor.cleanup)(workspace_id, loaded_items, window, cx)
 1051    }
 1052
 1053    fn view_to_serializable_item_handle(
 1054        view: AnyView,
 1055        cx: &App,
 1056    ) -> Option<Box<dyn SerializableItemHandle>> {
 1057        let this = cx.try_global::<Self>()?;
 1058        let descriptor = this.descriptors_by_type.get(&view.entity_type())?;
 1059        Some((descriptor.view_to_serializable_item)(view))
 1060    }
 1061
 1062    fn descriptor(item_kind: &str, cx: &App) -> Option<SerializableItemDescriptor> {
 1063        let this = cx.try_global::<Self>()?;
 1064        this.descriptors_by_kind.get(item_kind).copied()
 1065    }
 1066}
 1067
 1068pub fn register_serializable_item<I: SerializableItem>(cx: &mut App) {
 1069    let serialized_item_kind = I::serialized_item_kind();
 1070
 1071    let registry = cx.default_global::<SerializableItemRegistry>();
 1072    let descriptor = SerializableItemDescriptor {
 1073        deserialize: |project, workspace, workspace_id, item_id, window, cx| {
 1074            let task = I::deserialize(project, workspace, workspace_id, item_id, window, cx);
 1075            cx.foreground_executor()
 1076                .spawn(async { Ok(Box::new(task.await?) as Box<_>) })
 1077        },
 1078        cleanup: |workspace_id, loaded_items, window, cx| {
 1079            I::cleanup(workspace_id, loaded_items, window, cx)
 1080        },
 1081        view_to_serializable_item: |view| Box::new(view.downcast::<I>().unwrap()),
 1082    };
 1083    registry
 1084        .descriptors_by_kind
 1085        .insert(Arc::from(serialized_item_kind), descriptor);
 1086    registry
 1087        .descriptors_by_type
 1088        .insert(TypeId::of::<I>(), descriptor);
 1089}
 1090
 1091pub struct AppState {
 1092    pub languages: Arc<LanguageRegistry>,
 1093    pub client: Arc<Client>,
 1094    pub user_store: Entity<UserStore>,
 1095    pub workspace_store: Entity<WorkspaceStore>,
 1096    pub fs: Arc<dyn fs::Fs>,
 1097    pub build_window_options: fn(Option<Uuid>, &mut App) -> WindowOptions,
 1098    pub node_runtime: NodeRuntime,
 1099    pub session: Entity<AppSession>,
 1100}
 1101
 1102struct GlobalAppState(Arc<AppState>);
 1103
 1104impl Global for GlobalAppState {}
 1105
 1106pub struct WorkspaceStore {
 1107    workspaces: HashSet<(gpui::AnyWindowHandle, WeakEntity<Workspace>)>,
 1108    client: Arc<Client>,
 1109    _subscriptions: Vec<client::Subscription>,
 1110}
 1111
 1112#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq, PartialOrd, Ord)]
 1113pub enum CollaboratorId {
 1114    PeerId(PeerId),
 1115    Agent,
 1116}
 1117
 1118impl From<PeerId> for CollaboratorId {
 1119    fn from(peer_id: PeerId) -> Self {
 1120        CollaboratorId::PeerId(peer_id)
 1121    }
 1122}
 1123
 1124impl From<&PeerId> for CollaboratorId {
 1125    fn from(peer_id: &PeerId) -> Self {
 1126        CollaboratorId::PeerId(*peer_id)
 1127    }
 1128}
 1129
 1130#[derive(PartialEq, Eq, PartialOrd, Ord, Debug)]
 1131struct Follower {
 1132    project_id: Option<u64>,
 1133    peer_id: PeerId,
 1134}
 1135
 1136impl AppState {
 1137    #[track_caller]
 1138    pub fn global(cx: &App) -> Arc<Self> {
 1139        cx.global::<GlobalAppState>().0.clone()
 1140    }
 1141    pub fn try_global(cx: &App) -> Option<Arc<Self>> {
 1142        cx.try_global::<GlobalAppState>()
 1143            .map(|state| state.0.clone())
 1144    }
 1145    pub fn set_global(state: Arc<AppState>, cx: &mut App) {
 1146        cx.set_global(GlobalAppState(state));
 1147    }
 1148
 1149    #[cfg(any(test, feature = "test-support"))]
 1150    pub fn test(cx: &mut App) -> Arc<Self> {
 1151        use fs::Fs;
 1152        use node_runtime::NodeRuntime;
 1153        use session::Session;
 1154        use settings::SettingsStore;
 1155
 1156        if !cx.has_global::<SettingsStore>() {
 1157            let settings_store = SettingsStore::test(cx);
 1158            cx.set_global(settings_store);
 1159        }
 1160
 1161        let fs = fs::FakeFs::new(cx.background_executor().clone());
 1162        <dyn Fs>::set_global(fs.clone(), cx);
 1163        let languages = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));
 1164        let clock = Arc::new(clock::FakeSystemClock::new());
 1165        let http_client = http_client::FakeHttpClient::with_404_response();
 1166        let client = Client::new(clock, http_client, cx);
 1167        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 1168        let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
 1169        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 1170
 1171        theme_settings::init(theme::LoadThemes::JustBase, cx);
 1172        client::init(&client, cx);
 1173
 1174        Arc::new(Self {
 1175            client,
 1176            fs,
 1177            languages,
 1178            user_store,
 1179            workspace_store,
 1180            node_runtime: NodeRuntime::unavailable(),
 1181            build_window_options: |_, _| Default::default(),
 1182            session,
 1183        })
 1184    }
 1185}
 1186
 1187struct DelayedDebouncedEditAction {
 1188    task: Option<Task<()>>,
 1189    cancel_channel: Option<oneshot::Sender<()>>,
 1190}
 1191
 1192impl DelayedDebouncedEditAction {
 1193    fn new() -> DelayedDebouncedEditAction {
 1194        DelayedDebouncedEditAction {
 1195            task: None,
 1196            cancel_channel: None,
 1197        }
 1198    }
 1199
 1200    fn fire_new<F>(
 1201        &mut self,
 1202        delay: Duration,
 1203        window: &mut Window,
 1204        cx: &mut Context<Workspace>,
 1205        func: F,
 1206    ) where
 1207        F: 'static
 1208            + Send
 1209            + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> Task<Result<()>>,
 1210    {
 1211        if let Some(channel) = self.cancel_channel.take() {
 1212            _ = channel.send(());
 1213        }
 1214
 1215        let (sender, mut receiver) = oneshot::channel::<()>();
 1216        self.cancel_channel = Some(sender);
 1217
 1218        let previous_task = self.task.take();
 1219        self.task = Some(cx.spawn_in(window, async move |workspace, cx| {
 1220            let mut timer = cx.background_executor().timer(delay).fuse();
 1221            if let Some(previous_task) = previous_task {
 1222                previous_task.await;
 1223            }
 1224
 1225            futures::select_biased! {
 1226                _ = receiver => return,
 1227                    _ = timer => {}
 1228            }
 1229
 1230            if let Some(result) = workspace
 1231                .update_in(cx, |workspace, window, cx| (func)(workspace, window, cx))
 1232                .log_err()
 1233            {
 1234                result.await.log_err();
 1235            }
 1236        }));
 1237    }
 1238}
 1239
 1240pub enum Event {
 1241    PaneAdded(Entity<Pane>),
 1242    PaneRemoved,
 1243    ItemAdded {
 1244        item: Box<dyn ItemHandle>,
 1245    },
 1246    ActiveItemChanged,
 1247    ItemRemoved {
 1248        item_id: EntityId,
 1249    },
 1250    UserSavedItem {
 1251        pane: WeakEntity<Pane>,
 1252        item: Box<dyn WeakItemHandle>,
 1253        save_intent: SaveIntent,
 1254    },
 1255    ContactRequestedJoin(u64),
 1256    WorkspaceCreated(WeakEntity<Workspace>),
 1257    OpenBundledFile {
 1258        text: Cow<'static, str>,
 1259        title: &'static str,
 1260        language: &'static str,
 1261    },
 1262    ZoomChanged,
 1263    ModalOpened,
 1264    Activate,
 1265    PanelAdded(AnyView),
 1266}
 1267
 1268#[derive(Debug, Clone)]
 1269pub enum OpenVisible {
 1270    All,
 1271    None,
 1272    OnlyFiles,
 1273    OnlyDirectories,
 1274}
 1275
 1276enum WorkspaceLocation {
 1277    // Valid local paths or SSH project to serialize
 1278    Location(SerializedWorkspaceLocation, PathList),
 1279    // No valid location found hence clear session id
 1280    DetachFromSession,
 1281    // No valid location found to serialize
 1282    None,
 1283}
 1284
 1285type PromptForNewPath = Box<
 1286    dyn Fn(
 1287        &mut Workspace,
 1288        DirectoryLister,
 1289        Option<String>,
 1290        &mut Window,
 1291        &mut Context<Workspace>,
 1292    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1293>;
 1294
 1295type PromptForOpenPath = Box<
 1296    dyn Fn(
 1297        &mut Workspace,
 1298        DirectoryLister,
 1299        &mut Window,
 1300        &mut Context<Workspace>,
 1301    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1302>;
 1303
 1304#[derive(Default)]
 1305struct DispatchingKeystrokes {
 1306    dispatched: HashSet<Vec<Keystroke>>,
 1307    queue: VecDeque<Keystroke>,
 1308    task: Option<Shared<Task<()>>>,
 1309}
 1310
 1311/// Collects everything project-related for a certain window opened.
 1312/// In some way, is a counterpart of a window, as the [`WindowHandle`] could be downcast into `Workspace`.
 1313///
 1314/// A `Workspace` usually consists of 1 or more projects, a central pane group, 3 docks and a status bar.
 1315/// The `Workspace` owns everybody's state and serves as a default, "global context",
 1316/// that can be used to register a global action to be triggered from any place in the window.
 1317pub struct Workspace {
 1318    weak_self: WeakEntity<Self>,
 1319    workspace_actions: Vec<Box<dyn Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div>>,
 1320    zoomed: Option<AnyWeakView>,
 1321    previous_dock_drag_coordinates: Option<Point<Pixels>>,
 1322    zoomed_position: Option<DockPosition>,
 1323    center: PaneGroup,
 1324    left_dock: Entity<Dock>,
 1325    bottom_dock: Entity<Dock>,
 1326    right_dock: Entity<Dock>,
 1327    panes: Vec<Entity<Pane>>,
 1328    panes_by_item: HashMap<EntityId, WeakEntity<Pane>>,
 1329    active_pane: Entity<Pane>,
 1330    last_active_center_pane: Option<WeakEntity<Pane>>,
 1331    last_active_view_id: Option<proto::ViewId>,
 1332    status_bar: Entity<StatusBar>,
 1333    pub(crate) modal_layer: Entity<ModalLayer>,
 1334    toast_layer: Entity<ToastLayer>,
 1335    titlebar_item: Option<AnyView>,
 1336    notifications: Notifications,
 1337    suppressed_notifications: HashSet<NotificationId>,
 1338    project: Entity<Project>,
 1339    follower_states: HashMap<CollaboratorId, FollowerState>,
 1340    last_leaders_by_pane: HashMap<WeakEntity<Pane>, CollaboratorId>,
 1341    window_edited: bool,
 1342    last_window_title: Option<String>,
 1343    dirty_items: HashMap<EntityId, Subscription>,
 1344    active_call: Option<(GlobalAnyActiveCall, Vec<Subscription>)>,
 1345    leader_updates_tx: mpsc::UnboundedSender<(PeerId, proto::UpdateFollowers)>,
 1346    database_id: Option<WorkspaceId>,
 1347    app_state: Arc<AppState>,
 1348    dispatching_keystrokes: Rc<RefCell<DispatchingKeystrokes>>,
 1349    _subscriptions: Vec<Subscription>,
 1350    _apply_leader_updates: Task<Result<()>>,
 1351    _observe_current_user: Task<Result<()>>,
 1352    _schedule_serialize_workspace: Option<Task<()>>,
 1353    _serialize_workspace_task: Option<Task<()>>,
 1354    _schedule_serialize_ssh_paths: Option<Task<()>>,
 1355    pane_history_timestamp: Arc<AtomicUsize>,
 1356    bounds: Bounds<Pixels>,
 1357    pub centered_layout: bool,
 1358    bounds_save_task_queued: Option<Task<()>>,
 1359    on_prompt_for_new_path: Option<PromptForNewPath>,
 1360    on_prompt_for_open_path: Option<PromptForOpenPath>,
 1361    terminal_provider: Option<Box<dyn TerminalProvider>>,
 1362    debugger_provider: Option<Arc<dyn DebuggerProvider>>,
 1363    serializable_items_tx: UnboundedSender<Box<dyn SerializableItemHandle>>,
 1364    _items_serializer: Task<Result<()>>,
 1365    session_id: Option<String>,
 1366    scheduled_tasks: Vec<Task<()>>,
 1367    last_open_dock_positions: Vec<DockPosition>,
 1368    removing: bool,
 1369    open_in_dev_container: bool,
 1370    _dev_container_task: Option<Task<Result<()>>>,
 1371    _panels_task: Option<Task<Result<()>>>,
 1372    sidebar_focus_handle: Option<FocusHandle>,
 1373    multi_workspace: Option<WeakEntity<MultiWorkspace>>,
 1374}
 1375
 1376impl EventEmitter<Event> for Workspace {}
 1377
 1378#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
 1379pub struct ViewId {
 1380    pub creator: CollaboratorId,
 1381    pub id: u64,
 1382}
 1383
 1384pub struct FollowerState {
 1385    center_pane: Entity<Pane>,
 1386    dock_pane: Option<Entity<Pane>>,
 1387    active_view_id: Option<ViewId>,
 1388    items_by_leader_view_id: HashMap<ViewId, FollowerView>,
 1389}
 1390
 1391struct FollowerView {
 1392    view: Box<dyn FollowableItemHandle>,
 1393    location: Option<proto::PanelId>,
 1394}
 1395
 1396#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
 1397pub enum OpenMode {
 1398    /// Open the workspace in a new window.
 1399    NewWindow,
 1400    /// Add to the window's multi workspace without activating it (used during deserialization).
 1401    Add,
 1402    /// Add to the window's multi workspace and activate it.
 1403    #[default]
 1404    Activate,
 1405}
 1406
 1407impl Workspace {
 1408    pub fn new(
 1409        workspace_id: Option<WorkspaceId>,
 1410        project: Entity<Project>,
 1411        app_state: Arc<AppState>,
 1412        window: &mut Window,
 1413        cx: &mut Context<Self>,
 1414    ) -> Self {
 1415        if let Some(trusted_worktrees) = TrustedWorktrees::try_get_global(cx) {
 1416            cx.subscribe(&trusted_worktrees, |_, worktrees_store, e, cx| {
 1417                if let TrustedWorktreesEvent::Trusted(..) = e {
 1418                    // Do not persist auto trusted worktrees
 1419                    if !ProjectSettings::get_global(cx).session.trust_all_worktrees {
 1420                        worktrees_store.update(cx, |worktrees_store, cx| {
 1421                            worktrees_store.schedule_serialization(
 1422                                cx,
 1423                                |new_trusted_worktrees, cx| {
 1424                                    let timeout =
 1425                                        cx.background_executor().timer(SERIALIZATION_THROTTLE_TIME);
 1426                                    let db = WorkspaceDb::global(cx);
 1427                                    cx.background_spawn(async move {
 1428                                        timeout.await;
 1429                                        db.save_trusted_worktrees(new_trusted_worktrees)
 1430                                            .await
 1431                                            .log_err();
 1432                                    })
 1433                                },
 1434                            )
 1435                        });
 1436                    }
 1437                }
 1438            })
 1439            .detach();
 1440
 1441            cx.observe_global::<SettingsStore>(|_, cx| {
 1442                if ProjectSettings::get_global(cx).session.trust_all_worktrees {
 1443                    if let Some(trusted_worktrees) = TrustedWorktrees::try_get_global(cx) {
 1444                        trusted_worktrees.update(cx, |trusted_worktrees, cx| {
 1445                            trusted_worktrees.auto_trust_all(cx);
 1446                        })
 1447                    }
 1448                }
 1449            })
 1450            .detach();
 1451        }
 1452
 1453        cx.subscribe_in(&project, window, move |this, _, event, window, cx| {
 1454            match event {
 1455                project::Event::RemoteIdChanged(_) => {
 1456                    this.update_window_title(window, cx);
 1457                }
 1458
 1459                project::Event::CollaboratorLeft(peer_id) => {
 1460                    this.collaborator_left(*peer_id, window, cx);
 1461                }
 1462
 1463                &project::Event::WorktreeRemoved(_) => {
 1464                    this.update_window_title(window, cx);
 1465                    this.serialize_workspace(window, cx);
 1466                    this.update_history(cx);
 1467                }
 1468
 1469                &project::Event::WorktreeAdded(id) => {
 1470                    this.update_window_title(window, cx);
 1471                    if this
 1472                        .project()
 1473                        .read(cx)
 1474                        .worktree_for_id(id, cx)
 1475                        .is_some_and(|wt| wt.read(cx).is_visible())
 1476                    {
 1477                        this.serialize_workspace(window, cx);
 1478                        this.update_history(cx);
 1479                    }
 1480                }
 1481                project::Event::WorktreeUpdatedEntries(..) => {
 1482                    this.update_window_title(window, cx);
 1483                    this.serialize_workspace(window, cx);
 1484                }
 1485
 1486                project::Event::DisconnectedFromHost => {
 1487                    this.update_window_edited(window, cx);
 1488                    let leaders_to_unfollow =
 1489                        this.follower_states.keys().copied().collect::<Vec<_>>();
 1490                    for leader_id in leaders_to_unfollow {
 1491                        this.unfollow(leader_id, window, cx);
 1492                    }
 1493                }
 1494
 1495                project::Event::DisconnectedFromRemote {
 1496                    server_not_running: _,
 1497                } => {
 1498                    this.update_window_edited(window, cx);
 1499                }
 1500
 1501                project::Event::Closed => {
 1502                    window.remove_window();
 1503                }
 1504
 1505                project::Event::DeletedEntry(_, entry_id) => {
 1506                    for pane in this.panes.iter() {
 1507                        pane.update(cx, |pane, cx| {
 1508                            pane.handle_deleted_project_item(*entry_id, window, cx)
 1509                        });
 1510                    }
 1511                }
 1512
 1513                project::Event::Toast {
 1514                    notification_id,
 1515                    message,
 1516                    link,
 1517                } => this.show_notification(
 1518                    NotificationId::named(notification_id.clone()),
 1519                    cx,
 1520                    |cx| {
 1521                        let mut notification = MessageNotification::new(message.clone(), cx);
 1522                        if let Some(link) = link {
 1523                            notification = notification
 1524                                .more_info_message(link.label)
 1525                                .more_info_url(link.url);
 1526                        }
 1527
 1528                        cx.new(|_| notification)
 1529                    },
 1530                ),
 1531
 1532                project::Event::HideToast { notification_id } => {
 1533                    this.dismiss_notification(&NotificationId::named(notification_id.clone()), cx)
 1534                }
 1535
 1536                project::Event::LanguageServerPrompt(request) => {
 1537                    struct LanguageServerPrompt;
 1538
 1539                    this.show_notification(
 1540                        NotificationId::composite::<LanguageServerPrompt>(request.id),
 1541                        cx,
 1542                        |cx| {
 1543                            cx.new(|cx| {
 1544                                notifications::LanguageServerPrompt::new(request.clone(), cx)
 1545                            })
 1546                        },
 1547                    );
 1548                }
 1549
 1550                project::Event::AgentLocationChanged => {
 1551                    this.handle_agent_location_changed(window, cx)
 1552                }
 1553
 1554                _ => {}
 1555            }
 1556            cx.notify()
 1557        })
 1558        .detach();
 1559
 1560        cx.subscribe_in(
 1561            &project.read(cx).breakpoint_store(),
 1562            window,
 1563            |workspace, _, event, window, cx| match event {
 1564                BreakpointStoreEvent::BreakpointsUpdated(_, _)
 1565                | BreakpointStoreEvent::BreakpointsCleared(_) => {
 1566                    workspace.serialize_workspace(window, cx);
 1567                }
 1568                BreakpointStoreEvent::SetDebugLine | BreakpointStoreEvent::ClearDebugLines => {}
 1569            },
 1570        )
 1571        .detach();
 1572        if let Some(toolchain_store) = project.read(cx).toolchain_store() {
 1573            cx.subscribe_in(
 1574                &toolchain_store,
 1575                window,
 1576                |workspace, _, event, window, cx| match event {
 1577                    ToolchainStoreEvent::CustomToolchainsModified => {
 1578                        workspace.serialize_workspace(window, cx);
 1579                    }
 1580                    _ => {}
 1581                },
 1582            )
 1583            .detach();
 1584        }
 1585
 1586        cx.on_focus_lost(window, |this, window, cx| {
 1587            let focus_handle = this.focus_handle(cx);
 1588            window.focus(&focus_handle, cx);
 1589        })
 1590        .detach();
 1591
 1592        let weak_handle = cx.entity().downgrade();
 1593        let pane_history_timestamp = Arc::new(AtomicUsize::new(0));
 1594
 1595        let center_pane = cx.new(|cx| {
 1596            let mut center_pane = Pane::new(
 1597                weak_handle.clone(),
 1598                project.clone(),
 1599                pane_history_timestamp.clone(),
 1600                None,
 1601                NewFile.boxed_clone(),
 1602                true,
 1603                window,
 1604                cx,
 1605            );
 1606            center_pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 1607            center_pane.set_should_display_welcome_page(true);
 1608            center_pane
 1609        });
 1610        cx.subscribe_in(&center_pane, window, Self::handle_pane_event)
 1611            .detach();
 1612
 1613        window.focus(&center_pane.focus_handle(cx), cx);
 1614
 1615        cx.emit(Event::PaneAdded(center_pane.clone()));
 1616
 1617        let any_window_handle = window.window_handle();
 1618        app_state.workspace_store.update(cx, |store, _| {
 1619            store
 1620                .workspaces
 1621                .insert((any_window_handle, weak_handle.clone()));
 1622        });
 1623
 1624        let mut current_user = app_state.user_store.read(cx).watch_current_user();
 1625        let mut connection_status = app_state.client.status();
 1626        let _observe_current_user = cx.spawn_in(window, async move |this, cx| {
 1627            current_user.next().await;
 1628            connection_status.next().await;
 1629            let mut stream =
 1630                Stream::map(current_user, drop).merge(Stream::map(connection_status, drop));
 1631
 1632            while stream.recv().await.is_some() {
 1633                this.update(cx, |_, cx| cx.notify())?;
 1634            }
 1635            anyhow::Ok(())
 1636        });
 1637
 1638        // All leader updates are enqueued and then processed in a single task, so
 1639        // that each asynchronous operation can be run in order.
 1640        let (leader_updates_tx, mut leader_updates_rx) =
 1641            mpsc::unbounded::<(PeerId, proto::UpdateFollowers)>();
 1642        let _apply_leader_updates = cx.spawn_in(window, async move |this, cx| {
 1643            while let Some((leader_id, update)) = leader_updates_rx.next().await {
 1644                Self::process_leader_update(&this, leader_id, update, cx)
 1645                    .await
 1646                    .log_err();
 1647            }
 1648
 1649            Ok(())
 1650        });
 1651
 1652        cx.emit(Event::WorkspaceCreated(weak_handle.clone()));
 1653        let modal_layer = cx.new(|_| ModalLayer::new());
 1654        let toast_layer = cx.new(|_| ToastLayer::new());
 1655        cx.subscribe(
 1656            &modal_layer,
 1657            |_, _, _: &modal_layer::ModalOpenedEvent, cx| {
 1658                cx.emit(Event::ModalOpened);
 1659            },
 1660        )
 1661        .detach();
 1662
 1663        let left_dock = Dock::new(DockPosition::Left, modal_layer.clone(), window, cx);
 1664        let bottom_dock = Dock::new(DockPosition::Bottom, modal_layer.clone(), window, cx);
 1665        let right_dock = Dock::new(DockPosition::Right, modal_layer.clone(), window, cx);
 1666        let left_dock_buttons = cx.new(|cx| PanelButtons::new(left_dock.clone(), cx));
 1667        let bottom_dock_buttons = cx.new(|cx| PanelButtons::new(bottom_dock.clone(), cx));
 1668        let right_dock_buttons = cx.new(|cx| PanelButtons::new(right_dock.clone(), cx));
 1669        let multi_workspace = window
 1670            .root::<MultiWorkspace>()
 1671            .flatten()
 1672            .map(|mw| mw.downgrade());
 1673        let status_bar = cx.new(|cx| {
 1674            let mut status_bar =
 1675                StatusBar::new(&center_pane.clone(), multi_workspace.clone(), window, cx);
 1676            status_bar.add_left_item(left_dock_buttons, window, cx);
 1677            status_bar.add_right_item(right_dock_buttons, window, cx);
 1678            status_bar.add_right_item(bottom_dock_buttons, window, cx);
 1679            status_bar
 1680        });
 1681
 1682        let session_id = app_state.session.read(cx).id().to_owned();
 1683
 1684        let mut active_call = None;
 1685        if let Some(call) = GlobalAnyActiveCall::try_global(cx).cloned() {
 1686            let subscriptions =
 1687                vec![
 1688                    call.0
 1689                        .subscribe(window, cx, Box::new(Self::on_active_call_event)),
 1690                ];
 1691            active_call = Some((call, subscriptions));
 1692        }
 1693
 1694        let (serializable_items_tx, serializable_items_rx) =
 1695            mpsc::unbounded::<Box<dyn SerializableItemHandle>>();
 1696        let _items_serializer = cx.spawn_in(window, async move |this, cx| {
 1697            Self::serialize_items(&this, serializable_items_rx, cx).await
 1698        });
 1699
 1700        let subscriptions = vec![
 1701            cx.observe_window_activation(window, Self::on_window_activation_changed),
 1702            cx.observe_window_bounds(window, move |this, window, cx| {
 1703                if this.bounds_save_task_queued.is_some() {
 1704                    return;
 1705                }
 1706                this.bounds_save_task_queued = Some(cx.spawn_in(window, async move |this, cx| {
 1707                    cx.background_executor()
 1708                        .timer(Duration::from_millis(100))
 1709                        .await;
 1710                    this.update_in(cx, |this, window, cx| {
 1711                        this.save_window_bounds(window, cx).detach();
 1712                        this.bounds_save_task_queued.take();
 1713                    })
 1714                    .ok();
 1715                }));
 1716                cx.notify();
 1717            }),
 1718            cx.observe_window_appearance(window, |_, window, cx| {
 1719                let window_appearance = window.appearance();
 1720
 1721                *SystemAppearance::global_mut(cx) = SystemAppearance(window_appearance.into());
 1722
 1723                theme_settings::reload_theme(cx);
 1724                theme_settings::reload_icon_theme(cx);
 1725            }),
 1726            cx.on_release({
 1727                let weak_handle = weak_handle.clone();
 1728                move |this, cx| {
 1729                    this.app_state.workspace_store.update(cx, move |store, _| {
 1730                        store.workspaces.retain(|(_, weak)| weak != &weak_handle);
 1731                    })
 1732                }
 1733            }),
 1734        ];
 1735
 1736        cx.defer_in(window, move |this, window, cx| {
 1737            this.update_window_title(window, cx);
 1738            this.show_initial_notifications(cx);
 1739        });
 1740
 1741        let mut center = PaneGroup::new(center_pane.clone());
 1742        center.set_is_center(true);
 1743        center.mark_positions(cx);
 1744
 1745        Workspace {
 1746            weak_self: weak_handle.clone(),
 1747            zoomed: None,
 1748            zoomed_position: None,
 1749            previous_dock_drag_coordinates: None,
 1750            center,
 1751            panes: vec![center_pane.clone()],
 1752            panes_by_item: Default::default(),
 1753            active_pane: center_pane.clone(),
 1754            last_active_center_pane: Some(center_pane.downgrade()),
 1755            last_active_view_id: None,
 1756            status_bar,
 1757            modal_layer,
 1758            toast_layer,
 1759            titlebar_item: None,
 1760            notifications: Notifications::default(),
 1761            suppressed_notifications: HashSet::default(),
 1762            left_dock,
 1763            bottom_dock,
 1764            right_dock,
 1765            _panels_task: None,
 1766            project: project.clone(),
 1767            follower_states: Default::default(),
 1768            last_leaders_by_pane: Default::default(),
 1769            dispatching_keystrokes: Default::default(),
 1770            window_edited: false,
 1771            last_window_title: None,
 1772            dirty_items: Default::default(),
 1773            active_call,
 1774            database_id: workspace_id,
 1775            app_state,
 1776            _observe_current_user,
 1777            _apply_leader_updates,
 1778            _schedule_serialize_workspace: None,
 1779            _serialize_workspace_task: None,
 1780            _schedule_serialize_ssh_paths: None,
 1781            leader_updates_tx,
 1782            _subscriptions: subscriptions,
 1783            pane_history_timestamp,
 1784            workspace_actions: Default::default(),
 1785            // This data will be incorrect, but it will be overwritten by the time it needs to be used.
 1786            bounds: Default::default(),
 1787            centered_layout: false,
 1788            bounds_save_task_queued: None,
 1789            on_prompt_for_new_path: None,
 1790            on_prompt_for_open_path: None,
 1791            terminal_provider: None,
 1792            debugger_provider: None,
 1793            serializable_items_tx,
 1794            _items_serializer,
 1795            session_id: Some(session_id),
 1796
 1797            scheduled_tasks: Vec::new(),
 1798            last_open_dock_positions: Vec::new(),
 1799            removing: false,
 1800            sidebar_focus_handle: None,
 1801            multi_workspace,
 1802            open_in_dev_container: false,
 1803            _dev_container_task: None,
 1804        }
 1805    }
 1806
 1807    pub fn new_local(
 1808        abs_paths: Vec<PathBuf>,
 1809        app_state: Arc<AppState>,
 1810        requesting_window: Option<WindowHandle<MultiWorkspace>>,
 1811        env: Option<HashMap<String, String>>,
 1812        init: Option<Box<dyn FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send>>,
 1813        open_mode: OpenMode,
 1814        cx: &mut App,
 1815    ) -> Task<anyhow::Result<OpenResult>> {
 1816        let project_handle = Project::local(
 1817            app_state.client.clone(),
 1818            app_state.node_runtime.clone(),
 1819            app_state.user_store.clone(),
 1820            app_state.languages.clone(),
 1821            app_state.fs.clone(),
 1822            env,
 1823            Default::default(),
 1824            cx,
 1825        );
 1826
 1827        let db = WorkspaceDb::global(cx);
 1828        let kvp = db::kvp::KeyValueStore::global(cx);
 1829        cx.spawn(async move |cx| {
 1830            let mut paths_to_open = Vec::with_capacity(abs_paths.len());
 1831            for path in abs_paths.into_iter() {
 1832                if let Some(canonical) = app_state.fs.canonicalize(&path).await.ok() {
 1833                    paths_to_open.push(canonical)
 1834                } else {
 1835                    paths_to_open.push(path)
 1836                }
 1837            }
 1838
 1839            let serialized_workspace = db.workspace_for_roots(paths_to_open.as_slice());
 1840
 1841            if let Some(paths) = serialized_workspace.as_ref().map(|ws| &ws.paths) {
 1842                paths_to_open = paths.ordered_paths().cloned().collect();
 1843                if !paths.is_lexicographically_ordered() {
 1844                    project_handle.update(cx, |project, cx| {
 1845                        project.set_worktrees_reordered(true, cx);
 1846                    });
 1847                }
 1848            }
 1849
 1850            // Get project paths for all of the abs_paths
 1851            let mut project_paths: Vec<(PathBuf, Option<ProjectPath>)> =
 1852                Vec::with_capacity(paths_to_open.len());
 1853
 1854            for path in paths_to_open.into_iter() {
 1855                if let Some((_, project_entry)) = cx
 1856                    .update(|cx| {
 1857                        Workspace::project_path_for_path(project_handle.clone(), &path, true, cx)
 1858                    })
 1859                    .await
 1860                    .log_err()
 1861                {
 1862                    project_paths.push((path, Some(project_entry)));
 1863                } else {
 1864                    project_paths.push((path, None));
 1865                }
 1866            }
 1867
 1868            let workspace_id = if let Some(serialized_workspace) = serialized_workspace.as_ref() {
 1869                serialized_workspace.id
 1870            } else {
 1871                db.next_id().await.unwrap_or_else(|_| Default::default())
 1872            };
 1873
 1874            let toolchains = db.toolchains(workspace_id).await?;
 1875
 1876            for (toolchain, worktree_path, path) in toolchains {
 1877                let toolchain_path = PathBuf::from(toolchain.path.clone().to_string());
 1878                let Some(worktree_id) = project_handle.read_with(cx, |this, cx| {
 1879                    this.find_worktree(&worktree_path, cx)
 1880                        .and_then(|(worktree, rel_path)| {
 1881                            if rel_path.is_empty() {
 1882                                Some(worktree.read(cx).id())
 1883                            } else {
 1884                                None
 1885                            }
 1886                        })
 1887                }) else {
 1888                    // We did not find a worktree with a given path, but that's whatever.
 1889                    continue;
 1890                };
 1891                if !app_state.fs.is_file(toolchain_path.as_path()).await {
 1892                    continue;
 1893                }
 1894
 1895                project_handle
 1896                    .update(cx, |this, cx| {
 1897                        this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 1898                    })
 1899                    .await;
 1900            }
 1901            if let Some(workspace) = serialized_workspace.as_ref() {
 1902                project_handle.update(cx, |this, cx| {
 1903                    for (scope, toolchains) in &workspace.user_toolchains {
 1904                        for toolchain in toolchains {
 1905                            this.add_toolchain(toolchain.clone(), scope.clone(), cx);
 1906                        }
 1907                    }
 1908                });
 1909            }
 1910
 1911            let window_to_replace = match open_mode {
 1912                OpenMode::NewWindow => None,
 1913                _ => requesting_window,
 1914            };
 1915
 1916            let (window, workspace): (WindowHandle<MultiWorkspace>, Entity<Workspace>) =
 1917                if let Some(window) = window_to_replace {
 1918                    let centered_layout = serialized_workspace
 1919                        .as_ref()
 1920                        .map(|w| w.centered_layout)
 1921                        .unwrap_or(false);
 1922
 1923                    let workspace = window.update(cx, |multi_workspace, window, cx| {
 1924                        let workspace = cx.new(|cx| {
 1925                            let mut workspace = Workspace::new(
 1926                                Some(workspace_id),
 1927                                project_handle.clone(),
 1928                                app_state.clone(),
 1929                                window,
 1930                                cx,
 1931                            );
 1932
 1933                            workspace.centered_layout = centered_layout;
 1934
 1935                            // Call init callback to add items before window renders
 1936                            if let Some(init) = init {
 1937                                init(&mut workspace, window, cx);
 1938                            }
 1939
 1940                            workspace
 1941                        });
 1942                        match open_mode {
 1943                            OpenMode::Activate => {
 1944                                multi_workspace.activate(workspace.clone(), window, cx);
 1945                            }
 1946                            OpenMode::Add => {
 1947                                multi_workspace.add(workspace.clone(), &*window, cx);
 1948                            }
 1949                            OpenMode::NewWindow => {
 1950                                unreachable!()
 1951                            }
 1952                        }
 1953                        workspace
 1954                    })?;
 1955                    (window, workspace)
 1956                } else {
 1957                    let window_bounds_override = window_bounds_env_override();
 1958
 1959                    let (window_bounds, display) = if let Some(bounds) = window_bounds_override {
 1960                        (Some(WindowBounds::Windowed(bounds)), None)
 1961                    } else if let Some(workspace) = serialized_workspace.as_ref()
 1962                        && let Some(display) = workspace.display
 1963                        && let Some(bounds) = workspace.window_bounds.as_ref()
 1964                    {
 1965                        // Reopening an existing workspace - restore its saved bounds
 1966                        (Some(bounds.0), Some(display))
 1967                    } else if let Some((display, bounds)) =
 1968                        persistence::read_default_window_bounds(&kvp)
 1969                    {
 1970                        // New or empty workspace - use the last known window bounds
 1971                        (Some(bounds), Some(display))
 1972                    } else {
 1973                        // New window - let GPUI's default_bounds() handle cascading
 1974                        (None, None)
 1975                    };
 1976
 1977                    // Use the serialized workspace to construct the new window
 1978                    let mut options = cx.update(|cx| (app_state.build_window_options)(display, cx));
 1979                    options.window_bounds = window_bounds;
 1980                    let centered_layout = serialized_workspace
 1981                        .as_ref()
 1982                        .map(|w| w.centered_layout)
 1983                        .unwrap_or(false);
 1984                    let window = cx.open_window(options, {
 1985                        let app_state = app_state.clone();
 1986                        let project_handle = project_handle.clone();
 1987                        move |window, cx| {
 1988                            let workspace = cx.new(|cx| {
 1989                                let mut workspace = Workspace::new(
 1990                                    Some(workspace_id),
 1991                                    project_handle,
 1992                                    app_state,
 1993                                    window,
 1994                                    cx,
 1995                                );
 1996                                workspace.centered_layout = centered_layout;
 1997
 1998                                // Call init callback to add items before window renders
 1999                                if let Some(init) = init {
 2000                                    init(&mut workspace, window, cx);
 2001                                }
 2002
 2003                                workspace
 2004                            });
 2005                            cx.new(|cx| MultiWorkspace::new(workspace, window, cx))
 2006                        }
 2007                    })?;
 2008                    let workspace =
 2009                        window.update(cx, |multi_workspace: &mut MultiWorkspace, _, _cx| {
 2010                            multi_workspace.workspace().clone()
 2011                        })?;
 2012                    (window, workspace)
 2013                };
 2014
 2015            notify_if_database_failed(window, cx);
 2016            // Check if this is an empty workspace (no paths to open)
 2017            // An empty workspace is one where project_paths is empty
 2018            let is_empty_workspace = project_paths.is_empty();
 2019            // Check if serialized workspace has paths before it's moved
 2020            let serialized_workspace_has_paths = serialized_workspace
 2021                .as_ref()
 2022                .map(|ws| !ws.paths.is_empty())
 2023                .unwrap_or(false);
 2024
 2025            let opened_items = window
 2026                .update(cx, |_, window, cx| {
 2027                    workspace.update(cx, |_workspace: &mut Workspace, cx| {
 2028                        open_items(serialized_workspace, project_paths, window, cx)
 2029                    })
 2030                })?
 2031                .await
 2032                .unwrap_or_default();
 2033
 2034            // Restore default dock state for empty workspaces
 2035            // Only restore if:
 2036            // 1. This is an empty workspace (no paths), AND
 2037            // 2. The serialized workspace either doesn't exist or has no paths
 2038            if is_empty_workspace && !serialized_workspace_has_paths {
 2039                if let Some(default_docks) = persistence::read_default_dock_state(&kvp) {
 2040                    window
 2041                        .update(cx, |_, window, cx| {
 2042                            workspace.update(cx, |workspace, cx| {
 2043                                for (dock, serialized_dock) in [
 2044                                    (&workspace.right_dock, &default_docks.right),
 2045                                    (&workspace.left_dock, &default_docks.left),
 2046                                    (&workspace.bottom_dock, &default_docks.bottom),
 2047                                ] {
 2048                                    dock.update(cx, |dock, cx| {
 2049                                        dock.serialized_dock = Some(serialized_dock.clone());
 2050                                        dock.restore_state(window, cx);
 2051                                    });
 2052                                }
 2053                                cx.notify();
 2054                            });
 2055                        })
 2056                        .log_err();
 2057                }
 2058            }
 2059
 2060            window
 2061                .update(cx, |_, _window, cx| {
 2062                    workspace.update(cx, |this: &mut Workspace, cx| {
 2063                        this.update_history(cx);
 2064                    });
 2065                })
 2066                .log_err();
 2067            Ok(OpenResult {
 2068                window,
 2069                workspace,
 2070                opened_items,
 2071            })
 2072        })
 2073    }
 2074
 2075    pub fn project_group_key(&self, cx: &App) -> ProjectGroupKey {
 2076        self.project.read(cx).project_group_key(cx)
 2077    }
 2078
 2079    pub fn weak_handle(&self) -> WeakEntity<Self> {
 2080        self.weak_self.clone()
 2081    }
 2082
 2083    pub fn left_dock(&self) -> &Entity<Dock> {
 2084        &self.left_dock
 2085    }
 2086
 2087    pub fn bottom_dock(&self) -> &Entity<Dock> {
 2088        &self.bottom_dock
 2089    }
 2090
 2091    pub fn set_bottom_dock_layout(
 2092        &mut self,
 2093        layout: BottomDockLayout,
 2094        window: &mut Window,
 2095        cx: &mut Context<Self>,
 2096    ) {
 2097        let fs = self.project().read(cx).fs();
 2098        settings::update_settings_file(fs.clone(), cx, move |content, _cx| {
 2099            content.workspace.bottom_dock_layout = Some(layout);
 2100        });
 2101
 2102        cx.notify();
 2103        self.serialize_workspace(window, cx);
 2104    }
 2105
 2106    pub fn right_dock(&self) -> &Entity<Dock> {
 2107        &self.right_dock
 2108    }
 2109
 2110    pub fn all_docks(&self) -> [&Entity<Dock>; 3] {
 2111        [&self.left_dock, &self.bottom_dock, &self.right_dock]
 2112    }
 2113
 2114    pub fn capture_dock_state(&self, _window: &Window, cx: &App) -> DockStructure {
 2115        let left_dock = self.left_dock.read(cx);
 2116        let left_visible = left_dock.is_open();
 2117        let left_active_panel = left_dock
 2118            .active_panel()
 2119            .map(|panel| panel.persistent_name().to_string());
 2120        // `zoomed_position` is kept in sync with individual panel zoom state
 2121        // by the dock code in `Dock::new` and `Dock::add_panel`.
 2122        let left_dock_zoom = self.zoomed_position == Some(DockPosition::Left);
 2123
 2124        let right_dock = self.right_dock.read(cx);
 2125        let right_visible = right_dock.is_open();
 2126        let right_active_panel = right_dock
 2127            .active_panel()
 2128            .map(|panel| panel.persistent_name().to_string());
 2129        let right_dock_zoom = self.zoomed_position == Some(DockPosition::Right);
 2130
 2131        let bottom_dock = self.bottom_dock.read(cx);
 2132        let bottom_visible = bottom_dock.is_open();
 2133        let bottom_active_panel = bottom_dock
 2134            .active_panel()
 2135            .map(|panel| panel.persistent_name().to_string());
 2136        let bottom_dock_zoom = self.zoomed_position == Some(DockPosition::Bottom);
 2137
 2138        DockStructure {
 2139            left: DockData {
 2140                visible: left_visible,
 2141                active_panel: left_active_panel,
 2142                zoom: left_dock_zoom,
 2143            },
 2144            right: DockData {
 2145                visible: right_visible,
 2146                active_panel: right_active_panel,
 2147                zoom: right_dock_zoom,
 2148            },
 2149            bottom: DockData {
 2150                visible: bottom_visible,
 2151                active_panel: bottom_active_panel,
 2152                zoom: bottom_dock_zoom,
 2153            },
 2154        }
 2155    }
 2156
 2157    pub fn set_dock_structure(
 2158        &self,
 2159        docks: DockStructure,
 2160        window: &mut Window,
 2161        cx: &mut Context<Self>,
 2162    ) {
 2163        for (dock, data) in [
 2164            (&self.left_dock, docks.left),
 2165            (&self.bottom_dock, docks.bottom),
 2166            (&self.right_dock, docks.right),
 2167        ] {
 2168            dock.update(cx, |dock, cx| {
 2169                dock.serialized_dock = Some(data);
 2170                dock.restore_state(window, cx);
 2171            });
 2172        }
 2173    }
 2174
 2175    pub fn open_item_abs_paths(&self, cx: &App) -> Vec<PathBuf> {
 2176        self.items(cx)
 2177            .filter_map(|item| {
 2178                let project_path = item.project_path(cx)?;
 2179                self.project.read(cx).absolute_path(&project_path, cx)
 2180            })
 2181            .collect()
 2182    }
 2183
 2184    pub fn dock_at_position(&self, position: DockPosition) -> &Entity<Dock> {
 2185        match position {
 2186            DockPosition::Left => &self.left_dock,
 2187            DockPosition::Bottom => &self.bottom_dock,
 2188            DockPosition::Right => &self.right_dock,
 2189        }
 2190    }
 2191
 2192    pub fn agent_panel_position(&self, cx: &App) -> Option<DockPosition> {
 2193        self.all_docks().into_iter().find_map(|dock| {
 2194            let dock = dock.read(cx);
 2195            dock.has_agent_panel(cx).then_some(dock.position())
 2196        })
 2197    }
 2198
 2199    pub fn panel_size_state<T: Panel>(&self, cx: &App) -> Option<dock::PanelSizeState> {
 2200        self.all_docks().into_iter().find_map(|dock| {
 2201            let dock = dock.read(cx);
 2202            let panel = dock.panel::<T>()?;
 2203            dock.stored_panel_size_state(&panel)
 2204        })
 2205    }
 2206
 2207    pub fn persisted_panel_size_state(
 2208        &self,
 2209        panel_key: &'static str,
 2210        cx: &App,
 2211    ) -> Option<dock::PanelSizeState> {
 2212        dock::Dock::load_persisted_size_state(self, panel_key, cx)
 2213    }
 2214
 2215    pub fn persist_panel_size_state(
 2216        &self,
 2217        panel_key: &str,
 2218        size_state: dock::PanelSizeState,
 2219        cx: &mut App,
 2220    ) {
 2221        let Some(workspace_id) = self
 2222            .database_id()
 2223            .map(|id| i64::from(id).to_string())
 2224            .or(self.session_id())
 2225        else {
 2226            return;
 2227        };
 2228
 2229        let kvp = db::kvp::KeyValueStore::global(cx);
 2230        let panel_key = panel_key.to_string();
 2231        cx.background_spawn(async move {
 2232            let scope = kvp.scoped(dock::PANEL_SIZE_STATE_KEY);
 2233            scope
 2234                .write(
 2235                    format!("{workspace_id}:{panel_key}"),
 2236                    serde_json::to_string(&size_state)?,
 2237                )
 2238                .await
 2239        })
 2240        .detach_and_log_err(cx);
 2241    }
 2242
 2243    pub fn set_panel_size_state<T: Panel>(
 2244        &mut self,
 2245        size_state: dock::PanelSizeState,
 2246        window: &mut Window,
 2247        cx: &mut Context<Self>,
 2248    ) -> bool {
 2249        let Some(panel) = self.panel::<T>(cx) else {
 2250            return false;
 2251        };
 2252
 2253        let dock = self.dock_at_position(panel.position(window, cx));
 2254        let did_set = dock.update(cx, |dock, cx| {
 2255            dock.set_panel_size_state(&panel, size_state, cx)
 2256        });
 2257
 2258        if did_set {
 2259            self.persist_panel_size_state(T::panel_key(), size_state, cx);
 2260        }
 2261
 2262        did_set
 2263    }
 2264
 2265    pub fn toggle_dock_panel_flexible_size(
 2266        &self,
 2267        dock: &Entity<Dock>,
 2268        panel: &dyn PanelHandle,
 2269        window: &mut Window,
 2270        cx: &mut App,
 2271    ) {
 2272        let position = dock.read(cx).position();
 2273        let current_size = self.dock_size(&dock.read(cx), window, cx);
 2274        let current_flex =
 2275            current_size.and_then(|size| self.dock_flex_for_size(position, size, window, cx));
 2276        dock.update(cx, |dock, cx| {
 2277            dock.toggle_panel_flexible_size(panel, current_size, current_flex, window, cx);
 2278        });
 2279    }
 2280
 2281    fn dock_size(&self, dock: &Dock, window: &Window, cx: &App) -> Option<Pixels> {
 2282        let panel = dock.active_panel()?;
 2283        let size_state = dock
 2284            .stored_panel_size_state(panel.as_ref())
 2285            .unwrap_or_default();
 2286        let position = dock.position();
 2287
 2288        let use_flex = panel.has_flexible_size(window, cx);
 2289
 2290        if position.axis() == Axis::Horizontal
 2291            && use_flex
 2292            && let Some(flex) = size_state.flex.or_else(|| self.default_dock_flex(position))
 2293        {
 2294            let workspace_width = self.bounds.size.width;
 2295            if workspace_width <= Pixels::ZERO {
 2296                return None;
 2297            }
 2298            let flex = flex.max(0.001);
 2299            let opposite = self.opposite_dock_panel_and_size_state(position, window, cx);
 2300            if let Some(opposite_flex) = opposite.as_ref().and_then(|(_, s)| s.flex) {
 2301                // Both docks are flex items sharing the full workspace width.
 2302                let total_flex = flex + 1.0 + opposite_flex;
 2303                return Some((flex / total_flex * workspace_width).max(RESIZE_HANDLE_SIZE));
 2304            } else {
 2305                // Opposite dock is fixed-width; flex items share (W - fixed).
 2306                let opposite_fixed = opposite
 2307                    .map(|(panel, s)| s.size.unwrap_or_else(|| panel.default_size(window, cx)))
 2308                    .unwrap_or_default();
 2309                let available = (workspace_width - opposite_fixed).max(RESIZE_HANDLE_SIZE);
 2310                return Some((flex / (flex + 1.0) * available).max(RESIZE_HANDLE_SIZE));
 2311            }
 2312        }
 2313
 2314        Some(
 2315            size_state
 2316                .size
 2317                .unwrap_or_else(|| panel.default_size(window, cx)),
 2318        )
 2319    }
 2320
 2321    pub fn dock_flex_for_size(
 2322        &self,
 2323        position: DockPosition,
 2324        size: Pixels,
 2325        window: &Window,
 2326        cx: &App,
 2327    ) -> Option<f32> {
 2328        if position.axis() != Axis::Horizontal {
 2329            return None;
 2330        }
 2331
 2332        let workspace_width = self.bounds.size.width;
 2333        if workspace_width <= Pixels::ZERO {
 2334            return None;
 2335        }
 2336
 2337        let opposite = self.opposite_dock_panel_and_size_state(position, window, cx);
 2338        if let Some(opposite_flex) = opposite.as_ref().and_then(|(_, s)| s.flex) {
 2339            let size = size.clamp(px(0.), workspace_width - px(1.));
 2340            Some((size * (1.0 + opposite_flex) / (workspace_width - size)).max(0.0))
 2341        } else {
 2342            let opposite_width = opposite
 2343                .map(|(panel, s)| s.size.unwrap_or_else(|| panel.default_size(window, cx)))
 2344                .unwrap_or_default();
 2345            let available = (workspace_width - opposite_width).max(RESIZE_HANDLE_SIZE);
 2346            let remaining = (available - size).max(px(1.));
 2347            Some((size / remaining).max(0.0))
 2348        }
 2349    }
 2350
 2351    fn opposite_dock_panel_and_size_state(
 2352        &self,
 2353        position: DockPosition,
 2354        window: &Window,
 2355        cx: &App,
 2356    ) -> Option<(Arc<dyn PanelHandle>, PanelSizeState)> {
 2357        let opposite_position = match position {
 2358            DockPosition::Left => DockPosition::Right,
 2359            DockPosition::Right => DockPosition::Left,
 2360            DockPosition::Bottom => return None,
 2361        };
 2362
 2363        let opposite_dock = self.dock_at_position(opposite_position).read(cx);
 2364        let panel = opposite_dock.visible_panel()?;
 2365        let mut size_state = opposite_dock
 2366            .stored_panel_size_state(panel.as_ref())
 2367            .unwrap_or_default();
 2368        if size_state.flex.is_none() && panel.has_flexible_size(window, cx) {
 2369            size_state.flex = self.default_dock_flex(opposite_position);
 2370        }
 2371        Some((panel.clone(), size_state))
 2372    }
 2373
 2374    pub fn default_dock_flex(&self, position: DockPosition) -> Option<f32> {
 2375        if position.axis() != Axis::Horizontal {
 2376            return None;
 2377        }
 2378
 2379        let pane = self.last_active_center_pane.clone()?.upgrade()?;
 2380        Some(self.center.width_fraction_for_pane(&pane).unwrap_or(1.0))
 2381    }
 2382
 2383    pub fn is_edited(&self) -> bool {
 2384        self.window_edited
 2385    }
 2386
 2387    pub fn add_panel<T: Panel>(
 2388        &mut self,
 2389        panel: Entity<T>,
 2390        window: &mut Window,
 2391        cx: &mut Context<Self>,
 2392    ) {
 2393        let focus_handle = panel.panel_focus_handle(cx);
 2394        cx.on_focus_in(&focus_handle, window, Self::handle_panel_focused)
 2395            .detach();
 2396
 2397        let dock_position = panel.position(window, cx);
 2398        let dock = self.dock_at_position(dock_position);
 2399        let any_panel = panel.to_any();
 2400        let persisted_size_state =
 2401            self.persisted_panel_size_state(T::panel_key(), cx)
 2402                .or_else(|| {
 2403                    load_legacy_panel_size(T::panel_key(), dock_position, self, cx).map(|size| {
 2404                        let state = dock::PanelSizeState {
 2405                            size: Some(size),
 2406                            flex: None,
 2407                        };
 2408                        self.persist_panel_size_state(T::panel_key(), state, cx);
 2409                        state
 2410                    })
 2411                });
 2412
 2413        dock.update(cx, |dock, cx| {
 2414            let index = dock.add_panel(panel.clone(), self.weak_self.clone(), window, cx);
 2415            if let Some(size_state) = persisted_size_state {
 2416                dock.set_panel_size_state(&panel, size_state, cx);
 2417            }
 2418            index
 2419        });
 2420
 2421        cx.emit(Event::PanelAdded(any_panel));
 2422    }
 2423
 2424    pub fn remove_panel<T: Panel>(
 2425        &mut self,
 2426        panel: &Entity<T>,
 2427        window: &mut Window,
 2428        cx: &mut Context<Self>,
 2429    ) {
 2430        for dock in [&self.left_dock, &self.bottom_dock, &self.right_dock] {
 2431            dock.update(cx, |dock, cx| dock.remove_panel(panel, window, cx));
 2432        }
 2433    }
 2434
 2435    pub fn status_bar(&self) -> &Entity<StatusBar> {
 2436        &self.status_bar
 2437    }
 2438
 2439    pub fn set_sidebar_focus_handle(&mut self, handle: Option<FocusHandle>) {
 2440        self.sidebar_focus_handle = handle;
 2441    }
 2442
 2443    pub fn status_bar_visible(&self, cx: &App) -> bool {
 2444        StatusBarSettings::get_global(cx).show
 2445    }
 2446
 2447    pub fn multi_workspace(&self) -> Option<&WeakEntity<MultiWorkspace>> {
 2448        self.multi_workspace.as_ref()
 2449    }
 2450
 2451    pub fn set_multi_workspace(
 2452        &mut self,
 2453        multi_workspace: WeakEntity<MultiWorkspace>,
 2454        cx: &mut App,
 2455    ) {
 2456        self.status_bar.update(cx, |status_bar, cx| {
 2457            status_bar.set_multi_workspace(multi_workspace.clone(), cx);
 2458        });
 2459        self.multi_workspace = Some(multi_workspace);
 2460    }
 2461
 2462    pub fn app_state(&self) -> &Arc<AppState> {
 2463        &self.app_state
 2464    }
 2465
 2466    pub fn set_panels_task(&mut self, task: Task<Result<()>>) {
 2467        self._panels_task = Some(task);
 2468    }
 2469
 2470    pub fn take_panels_task(&mut self) -> Option<Task<Result<()>>> {
 2471        self._panels_task.take()
 2472    }
 2473
 2474    pub fn user_store(&self) -> &Entity<UserStore> {
 2475        &self.app_state.user_store
 2476    }
 2477
 2478    pub fn project(&self) -> &Entity<Project> {
 2479        &self.project
 2480    }
 2481
 2482    pub fn path_style(&self, cx: &App) -> PathStyle {
 2483        self.project.read(cx).path_style(cx)
 2484    }
 2485
 2486    pub fn recently_activated_items(&self, cx: &App) -> HashMap<EntityId, usize> {
 2487        let mut history: HashMap<EntityId, usize> = HashMap::default();
 2488
 2489        for pane_handle in &self.panes {
 2490            let pane = pane_handle.read(cx);
 2491
 2492            for entry in pane.activation_history() {
 2493                history.insert(
 2494                    entry.entity_id,
 2495                    history
 2496                        .get(&entry.entity_id)
 2497                        .cloned()
 2498                        .unwrap_or(0)
 2499                        .max(entry.timestamp),
 2500                );
 2501            }
 2502        }
 2503
 2504        history
 2505    }
 2506
 2507    pub fn recent_active_item_by_type<T: 'static>(&self, cx: &App) -> Option<Entity<T>> {
 2508        let mut recent_item: Option<Entity<T>> = None;
 2509        let mut recent_timestamp = 0;
 2510        for pane_handle in &self.panes {
 2511            let pane = pane_handle.read(cx);
 2512            let item_map: HashMap<EntityId, &Box<dyn ItemHandle>> =
 2513                pane.items().map(|item| (item.item_id(), item)).collect();
 2514            for entry in pane.activation_history() {
 2515                if entry.timestamp > recent_timestamp
 2516                    && let Some(&item) = item_map.get(&entry.entity_id)
 2517                    && let Some(typed_item) = item.act_as::<T>(cx)
 2518                {
 2519                    recent_timestamp = entry.timestamp;
 2520                    recent_item = Some(typed_item);
 2521                }
 2522            }
 2523        }
 2524        recent_item
 2525    }
 2526
 2527    pub fn recent_navigation_history_iter(
 2528        &self,
 2529        cx: &App,
 2530    ) -> impl Iterator<Item = (ProjectPath, Option<PathBuf>)> + use<> {
 2531        let mut abs_paths_opened: HashMap<PathBuf, HashSet<ProjectPath>> = HashMap::default();
 2532        let mut history: HashMap<ProjectPath, (Option<PathBuf>, usize)> = HashMap::default();
 2533
 2534        for pane in &self.panes {
 2535            let pane = pane.read(cx);
 2536
 2537            pane.nav_history()
 2538                .for_each_entry(cx, &mut |entry, (project_path, fs_path)| {
 2539                    if let Some(fs_path) = &fs_path {
 2540                        abs_paths_opened
 2541                            .entry(fs_path.clone())
 2542                            .or_default()
 2543                            .insert(project_path.clone());
 2544                    }
 2545                    let timestamp = entry.timestamp;
 2546                    match history.entry(project_path) {
 2547                        hash_map::Entry::Occupied(mut entry) => {
 2548                            let (_, old_timestamp) = entry.get();
 2549                            if &timestamp > old_timestamp {
 2550                                entry.insert((fs_path, timestamp));
 2551                            }
 2552                        }
 2553                        hash_map::Entry::Vacant(entry) => {
 2554                            entry.insert((fs_path, timestamp));
 2555                        }
 2556                    }
 2557                });
 2558
 2559            if let Some(item) = pane.active_item()
 2560                && let Some(project_path) = item.project_path(cx)
 2561            {
 2562                let fs_path = self.project.read(cx).absolute_path(&project_path, cx);
 2563
 2564                if let Some(fs_path) = &fs_path {
 2565                    abs_paths_opened
 2566                        .entry(fs_path.clone())
 2567                        .or_default()
 2568                        .insert(project_path.clone());
 2569                }
 2570
 2571                history.insert(project_path, (fs_path, std::usize::MAX));
 2572            }
 2573        }
 2574
 2575        history
 2576            .into_iter()
 2577            .sorted_by_key(|(_, (_, order))| *order)
 2578            .map(|(project_path, (fs_path, _))| (project_path, fs_path))
 2579            .rev()
 2580            .filter(move |(history_path, abs_path)| {
 2581                let latest_project_path_opened = abs_path
 2582                    .as_ref()
 2583                    .and_then(|abs_path| abs_paths_opened.get(abs_path))
 2584                    .and_then(|project_paths| {
 2585                        project_paths
 2586                            .iter()
 2587                            .max_by(|b1, b2| b1.worktree_id.cmp(&b2.worktree_id))
 2588                    });
 2589
 2590                latest_project_path_opened.is_none_or(|path| path == history_path)
 2591            })
 2592    }
 2593
 2594    pub fn recent_navigation_history(
 2595        &self,
 2596        limit: Option<usize>,
 2597        cx: &App,
 2598    ) -> Vec<(ProjectPath, Option<PathBuf>)> {
 2599        self.recent_navigation_history_iter(cx)
 2600            .take(limit.unwrap_or(usize::MAX))
 2601            .collect()
 2602    }
 2603
 2604    pub fn clear_navigation_history(&mut self, _window: &mut Window, cx: &mut Context<Workspace>) {
 2605        for pane in &self.panes {
 2606            pane.update(cx, |pane, cx| pane.nav_history_mut().clear(cx));
 2607        }
 2608    }
 2609
 2610    fn navigate_history(
 2611        &mut self,
 2612        pane: WeakEntity<Pane>,
 2613        mode: NavigationMode,
 2614        window: &mut Window,
 2615        cx: &mut Context<Workspace>,
 2616    ) -> Task<Result<()>> {
 2617        self.navigate_history_impl(
 2618            pane,
 2619            mode,
 2620            window,
 2621            &mut |history, cx| history.pop(mode, cx),
 2622            cx,
 2623        )
 2624    }
 2625
 2626    fn navigate_tag_history(
 2627        &mut self,
 2628        pane: WeakEntity<Pane>,
 2629        mode: TagNavigationMode,
 2630        window: &mut Window,
 2631        cx: &mut Context<Workspace>,
 2632    ) -> Task<Result<()>> {
 2633        self.navigate_history_impl(
 2634            pane,
 2635            NavigationMode::Normal,
 2636            window,
 2637            &mut |history, _cx| history.pop_tag(mode),
 2638            cx,
 2639        )
 2640    }
 2641
 2642    fn navigate_history_impl(
 2643        &mut self,
 2644        pane: WeakEntity<Pane>,
 2645        mode: NavigationMode,
 2646        window: &mut Window,
 2647        cb: &mut dyn FnMut(&mut NavHistory, &mut App) -> Option<NavigationEntry>,
 2648        cx: &mut Context<Workspace>,
 2649    ) -> Task<Result<()>> {
 2650        let to_load = if let Some(pane) = pane.upgrade() {
 2651            pane.update(cx, |pane, cx| {
 2652                window.focus(&pane.focus_handle(cx), cx);
 2653                loop {
 2654                    // Retrieve the weak item handle from the history.
 2655                    let entry = cb(pane.nav_history_mut(), cx)?;
 2656
 2657                    // If the item is still present in this pane, then activate it.
 2658                    if let Some(index) = entry
 2659                        .item
 2660                        .upgrade()
 2661                        .and_then(|v| pane.index_for_item(v.as_ref()))
 2662                    {
 2663                        let prev_active_item_index = pane.active_item_index();
 2664                        pane.nav_history_mut().set_mode(mode);
 2665                        pane.activate_item(index, true, true, window, cx);
 2666                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 2667
 2668                        let mut navigated = prev_active_item_index != pane.active_item_index();
 2669                        if let Some(data) = entry.data {
 2670                            navigated |= pane.active_item()?.navigate(data, window, cx);
 2671                        }
 2672
 2673                        if navigated {
 2674                            break None;
 2675                        }
 2676                    } else {
 2677                        // If the item is no longer present in this pane, then retrieve its
 2678                        // path info in order to reopen it.
 2679                        break pane
 2680                            .nav_history()
 2681                            .path_for_item(entry.item.id())
 2682                            .map(|(project_path, abs_path)| (project_path, abs_path, entry));
 2683                    }
 2684                }
 2685            })
 2686        } else {
 2687            None
 2688        };
 2689
 2690        if let Some((project_path, abs_path, entry)) = to_load {
 2691            // If the item was no longer present, then load it again from its previous path, first try the local path
 2692            let open_by_project_path = self.load_path(project_path.clone(), window, cx);
 2693
 2694            cx.spawn_in(window, async move  |workspace, cx| {
 2695                let open_by_project_path = open_by_project_path.await;
 2696                let mut navigated = false;
 2697                match open_by_project_path
 2698                    .with_context(|| format!("Navigating to {project_path:?}"))
 2699                {
 2700                    Ok((project_entry_id, build_item)) => {
 2701                        let prev_active_item_id = pane.update(cx, |pane, _| {
 2702                            pane.nav_history_mut().set_mode(mode);
 2703                            pane.active_item().map(|p| p.item_id())
 2704                        })?;
 2705
 2706                        pane.update_in(cx, |pane, window, cx| {
 2707                            let item = pane.open_item(
 2708                                project_entry_id,
 2709                                project_path,
 2710                                true,
 2711                                entry.is_preview,
 2712                                true,
 2713                                None,
 2714                                window, cx,
 2715                                build_item,
 2716                            );
 2717                            navigated |= Some(item.item_id()) != prev_active_item_id;
 2718                            pane.nav_history_mut().set_mode(NavigationMode::Normal);
 2719                            if let Some(data) = entry.data {
 2720                                navigated |= item.navigate(data, window, cx);
 2721                            }
 2722                        })?;
 2723                    }
 2724                    Err(open_by_project_path_e) => {
 2725                        // Fall back to opening by abs path, in case an external file was opened and closed,
 2726                        // and its worktree is now dropped
 2727                        if let Some(abs_path) = abs_path {
 2728                            let prev_active_item_id = pane.update(cx, |pane, _| {
 2729                                pane.nav_history_mut().set_mode(mode);
 2730                                pane.active_item().map(|p| p.item_id())
 2731                            })?;
 2732                            let open_by_abs_path = workspace.update_in(cx, |workspace, window, cx| {
 2733                                workspace.open_abs_path(abs_path.clone(), OpenOptions { visible: Some(OpenVisible::None), ..Default::default() }, window, cx)
 2734                            })?;
 2735                            match open_by_abs_path
 2736                                .await
 2737                                .with_context(|| format!("Navigating to {abs_path:?}"))
 2738                            {
 2739                                Ok(item) => {
 2740                                    pane.update_in(cx, |pane, window, cx| {
 2741                                        navigated |= Some(item.item_id()) != prev_active_item_id;
 2742                                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 2743                                        if let Some(data) = entry.data {
 2744                                            navigated |= item.navigate(data, window, cx);
 2745                                        }
 2746                                    })?;
 2747                                }
 2748                                Err(open_by_abs_path_e) => {
 2749                                    log::error!("Failed to navigate history: {open_by_project_path_e:#} and {open_by_abs_path_e:#}");
 2750                                }
 2751                            }
 2752                        }
 2753                    }
 2754                }
 2755
 2756                if !navigated {
 2757                    workspace
 2758                        .update_in(cx, |workspace, window, cx| {
 2759                            Self::navigate_history(workspace, pane, mode, window, cx)
 2760                        })?
 2761                        .await?;
 2762                }
 2763
 2764                Ok(())
 2765            })
 2766        } else {
 2767            Task::ready(Ok(()))
 2768        }
 2769    }
 2770
 2771    pub fn go_back(
 2772        &mut self,
 2773        pane: WeakEntity<Pane>,
 2774        window: &mut Window,
 2775        cx: &mut Context<Workspace>,
 2776    ) -> Task<Result<()>> {
 2777        self.navigate_history(pane, NavigationMode::GoingBack, window, cx)
 2778    }
 2779
 2780    pub fn go_forward(
 2781        &mut self,
 2782        pane: WeakEntity<Pane>,
 2783        window: &mut Window,
 2784        cx: &mut Context<Workspace>,
 2785    ) -> Task<Result<()>> {
 2786        self.navigate_history(pane, NavigationMode::GoingForward, window, cx)
 2787    }
 2788
 2789    pub fn reopen_closed_item(
 2790        &mut self,
 2791        window: &mut Window,
 2792        cx: &mut Context<Workspace>,
 2793    ) -> Task<Result<()>> {
 2794        self.navigate_history(
 2795            self.active_pane().downgrade(),
 2796            NavigationMode::ReopeningClosedItem,
 2797            window,
 2798            cx,
 2799        )
 2800    }
 2801
 2802    pub fn client(&self) -> &Arc<Client> {
 2803        &self.app_state.client
 2804    }
 2805
 2806    pub fn set_titlebar_item(&mut self, item: AnyView, _: &mut Window, cx: &mut Context<Self>) {
 2807        self.titlebar_item = Some(item);
 2808        cx.notify();
 2809    }
 2810
 2811    pub fn set_prompt_for_new_path(&mut self, prompt: PromptForNewPath) {
 2812        self.on_prompt_for_new_path = Some(prompt)
 2813    }
 2814
 2815    pub fn set_prompt_for_open_path(&mut self, prompt: PromptForOpenPath) {
 2816        self.on_prompt_for_open_path = Some(prompt)
 2817    }
 2818
 2819    pub fn set_terminal_provider(&mut self, provider: impl TerminalProvider + 'static) {
 2820        self.terminal_provider = Some(Box::new(provider));
 2821    }
 2822
 2823    pub fn set_debugger_provider(&mut self, provider: impl DebuggerProvider + 'static) {
 2824        self.debugger_provider = Some(Arc::new(provider));
 2825    }
 2826
 2827    pub fn set_open_in_dev_container(&mut self, value: bool) {
 2828        self.open_in_dev_container = value;
 2829    }
 2830
 2831    pub fn open_in_dev_container(&self) -> bool {
 2832        self.open_in_dev_container
 2833    }
 2834
 2835    pub fn set_dev_container_task(&mut self, task: Task<Result<()>>) {
 2836        self._dev_container_task = Some(task);
 2837    }
 2838
 2839    pub fn debugger_provider(&self) -> Option<Arc<dyn DebuggerProvider>> {
 2840        self.debugger_provider.clone()
 2841    }
 2842
 2843    pub fn prompt_for_open_path(
 2844        &mut self,
 2845        path_prompt_options: PathPromptOptions,
 2846        lister: DirectoryLister,
 2847        window: &mut Window,
 2848        cx: &mut Context<Self>,
 2849    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2850        if !lister.is_local(cx) || !WorkspaceSettings::get_global(cx).use_system_path_prompts {
 2851            let prompt = self.on_prompt_for_open_path.take().unwrap();
 2852            let rx = prompt(self, lister, window, cx);
 2853            self.on_prompt_for_open_path = Some(prompt);
 2854            rx
 2855        } else {
 2856            let (tx, rx) = oneshot::channel();
 2857            let abs_path = cx.prompt_for_paths(path_prompt_options);
 2858
 2859            cx.spawn_in(window, async move |workspace, cx| {
 2860                let Ok(result) = abs_path.await else {
 2861                    return Ok(());
 2862                };
 2863
 2864                match result {
 2865                    Ok(result) => {
 2866                        tx.send(result).ok();
 2867                    }
 2868                    Err(err) => {
 2869                        let rx = workspace.update_in(cx, |workspace, window, cx| {
 2870                            workspace.show_portal_error(err.to_string(), cx);
 2871                            let prompt = workspace.on_prompt_for_open_path.take().unwrap();
 2872                            let rx = prompt(workspace, lister, window, cx);
 2873                            workspace.on_prompt_for_open_path = Some(prompt);
 2874                            rx
 2875                        })?;
 2876                        if let Ok(path) = rx.await {
 2877                            tx.send(path).ok();
 2878                        }
 2879                    }
 2880                };
 2881                anyhow::Ok(())
 2882            })
 2883            .detach();
 2884
 2885            rx
 2886        }
 2887    }
 2888
 2889    pub fn prompt_for_new_path(
 2890        &mut self,
 2891        lister: DirectoryLister,
 2892        suggested_name: Option<String>,
 2893        window: &mut Window,
 2894        cx: &mut Context<Self>,
 2895    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2896        if self.project.read(cx).is_via_collab()
 2897            || self.project.read(cx).is_via_remote_server()
 2898            || !WorkspaceSettings::get_global(cx).use_system_path_prompts
 2899        {
 2900            let prompt = self.on_prompt_for_new_path.take().unwrap();
 2901            let rx = prompt(self, lister, suggested_name, window, cx);
 2902            self.on_prompt_for_new_path = Some(prompt);
 2903            return rx;
 2904        }
 2905
 2906        let (tx, rx) = oneshot::channel();
 2907        cx.spawn_in(window, async move |workspace, cx| {
 2908            let abs_path = workspace.update(cx, |workspace, cx| {
 2909                let relative_to = workspace
 2910                    .most_recent_active_path(cx)
 2911                    .and_then(|p| p.parent().map(|p| p.to_path_buf()))
 2912                    .or_else(|| {
 2913                        let project = workspace.project.read(cx);
 2914                        project.visible_worktrees(cx).find_map(|worktree| {
 2915                            Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
 2916                        })
 2917                    })
 2918                    .or_else(std::env::home_dir)
 2919                    .unwrap_or_else(|| PathBuf::from(""));
 2920                cx.prompt_for_new_path(&relative_to, suggested_name.as_deref())
 2921            })?;
 2922            let abs_path = match abs_path.await? {
 2923                Ok(path) => path,
 2924                Err(err) => {
 2925                    let rx = workspace.update_in(cx, |workspace, window, cx| {
 2926                        workspace.show_portal_error(err.to_string(), cx);
 2927
 2928                        let prompt = workspace.on_prompt_for_new_path.take().unwrap();
 2929                        let rx = prompt(workspace, lister, suggested_name, window, cx);
 2930                        workspace.on_prompt_for_new_path = Some(prompt);
 2931                        rx
 2932                    })?;
 2933                    if let Ok(path) = rx.await {
 2934                        tx.send(path).ok();
 2935                    }
 2936                    return anyhow::Ok(());
 2937                }
 2938            };
 2939
 2940            tx.send(abs_path.map(|path| vec![path])).ok();
 2941            anyhow::Ok(())
 2942        })
 2943        .detach();
 2944
 2945        rx
 2946    }
 2947
 2948    pub fn titlebar_item(&self) -> Option<AnyView> {
 2949        self.titlebar_item.clone()
 2950    }
 2951
 2952    /// Call the given callback with a workspace whose project is local or remote via WSL (allowing host access).
 2953    ///
 2954    /// If the given workspace has a local project, then it will be passed
 2955    /// to the callback. Otherwise, a new empty window will be created.
 2956    pub fn with_local_workspace<T, F>(
 2957        &mut self,
 2958        window: &mut Window,
 2959        cx: &mut Context<Self>,
 2960        callback: F,
 2961    ) -> Task<Result<T>>
 2962    where
 2963        T: 'static,
 2964        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
 2965    {
 2966        if self.project.read(cx).is_local() {
 2967            Task::ready(Ok(callback(self, window, cx)))
 2968        } else {
 2969            let env = self.project.read(cx).cli_environment(cx);
 2970            let task = Self::new_local(
 2971                Vec::new(),
 2972                self.app_state.clone(),
 2973                None,
 2974                env,
 2975                None,
 2976                OpenMode::Activate,
 2977                cx,
 2978            );
 2979            cx.spawn_in(window, async move |_vh, cx| {
 2980                let OpenResult {
 2981                    window: multi_workspace_window,
 2982                    ..
 2983                } = task.await?;
 2984                multi_workspace_window.update(cx, |multi_workspace, window, cx| {
 2985                    let workspace = multi_workspace.workspace().clone();
 2986                    workspace.update(cx, |workspace, cx| callback(workspace, window, cx))
 2987                })
 2988            })
 2989        }
 2990    }
 2991
 2992    /// Call the given callback with a workspace whose project is local or remote via WSL (allowing host access).
 2993    ///
 2994    /// If the given workspace has a local project, then it will be passed
 2995    /// to the callback. Otherwise, a new empty window will be created.
 2996    pub fn with_local_or_wsl_workspace<T, F>(
 2997        &mut self,
 2998        window: &mut Window,
 2999        cx: &mut Context<Self>,
 3000        callback: F,
 3001    ) -> Task<Result<T>>
 3002    where
 3003        T: 'static,
 3004        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
 3005    {
 3006        let project = self.project.read(cx);
 3007        if project.is_local() || project.is_via_wsl_with_host_interop(cx) {
 3008            Task::ready(Ok(callback(self, window, cx)))
 3009        } else {
 3010            let env = self.project.read(cx).cli_environment(cx);
 3011            let task = Self::new_local(
 3012                Vec::new(),
 3013                self.app_state.clone(),
 3014                None,
 3015                env,
 3016                None,
 3017                OpenMode::Activate,
 3018                cx,
 3019            );
 3020            cx.spawn_in(window, async move |_vh, cx| {
 3021                let OpenResult {
 3022                    window: multi_workspace_window,
 3023                    ..
 3024                } = task.await?;
 3025                multi_workspace_window.update(cx, |multi_workspace, window, cx| {
 3026                    let workspace = multi_workspace.workspace().clone();
 3027                    workspace.update(cx, |workspace, cx| callback(workspace, window, cx))
 3028                })
 3029            })
 3030        }
 3031    }
 3032
 3033    pub fn worktrees<'a>(&self, cx: &'a App) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 3034        self.project.read(cx).worktrees(cx)
 3035    }
 3036
 3037    pub fn visible_worktrees<'a>(
 3038        &self,
 3039        cx: &'a App,
 3040    ) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 3041        self.project.read(cx).visible_worktrees(cx)
 3042    }
 3043
 3044    pub fn worktree_scans_complete(&self, cx: &App) -> impl Future<Output = ()> + 'static + use<> {
 3045        let futures = self
 3046            .worktrees(cx)
 3047            .filter_map(|worktree| worktree.read(cx).as_local())
 3048            .map(|worktree| worktree.scan_complete())
 3049            .collect::<Vec<_>>();
 3050        async move {
 3051            for future in futures {
 3052                future.await;
 3053            }
 3054        }
 3055    }
 3056
 3057    pub fn close_global(cx: &mut App) {
 3058        cx.defer(|cx| {
 3059            cx.windows().iter().find(|window| {
 3060                window
 3061                    .update(cx, |_, window, _| {
 3062                        if window.is_window_active() {
 3063                            //This can only get called when the window's project connection has been lost
 3064                            //so we don't need to prompt the user for anything and instead just close the window
 3065                            window.remove_window();
 3066                            true
 3067                        } else {
 3068                            false
 3069                        }
 3070                    })
 3071                    .unwrap_or(false)
 3072            });
 3073        });
 3074    }
 3075
 3076    pub fn move_focused_panel_to_next_position(
 3077        &mut self,
 3078        _: &MoveFocusedPanelToNextPosition,
 3079        window: &mut Window,
 3080        cx: &mut Context<Self>,
 3081    ) {
 3082        let docks = self.all_docks();
 3083        let active_dock = docks
 3084            .into_iter()
 3085            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 3086
 3087        if let Some(dock) = active_dock {
 3088            dock.update(cx, |dock, cx| {
 3089                let active_panel = dock
 3090                    .active_panel()
 3091                    .filter(|panel| panel.panel_focus_handle(cx).contains_focused(window, cx));
 3092
 3093                if let Some(panel) = active_panel {
 3094                    panel.move_to_next_position(window, cx);
 3095                }
 3096            })
 3097        }
 3098    }
 3099
 3100    pub fn prepare_to_close(
 3101        &mut self,
 3102        close_intent: CloseIntent,
 3103        window: &mut Window,
 3104        cx: &mut Context<Self>,
 3105    ) -> Task<Result<bool>> {
 3106        let active_call = self.active_global_call();
 3107
 3108        cx.spawn_in(window, async move |this, cx| {
 3109            this.update(cx, |this, _| {
 3110                if close_intent == CloseIntent::CloseWindow {
 3111                    this.removing = true;
 3112                }
 3113            })?;
 3114
 3115            let workspace_count = cx.update(|_window, cx| {
 3116                cx.windows()
 3117                    .iter()
 3118                    .filter(|window| window.downcast::<MultiWorkspace>().is_some())
 3119                    .count()
 3120            })?;
 3121
 3122            #[cfg(target_os = "macos")]
 3123            let save_last_workspace = false;
 3124
 3125            // On Linux and Windows, closing the last window should restore the last workspace.
 3126            #[cfg(not(target_os = "macos"))]
 3127            let save_last_workspace = {
 3128                let remaining_workspaces = cx.update(|_window, cx| {
 3129                    cx.windows()
 3130                        .iter()
 3131                        .filter_map(|window| window.downcast::<MultiWorkspace>())
 3132                        .filter_map(|multi_workspace| {
 3133                            multi_workspace
 3134                                .update(cx, |multi_workspace, _, cx| {
 3135                                    multi_workspace.workspace().read(cx).removing
 3136                                })
 3137                                .ok()
 3138                        })
 3139                        .filter(|removing| !removing)
 3140                        .count()
 3141                })?;
 3142
 3143                close_intent != CloseIntent::ReplaceWindow && remaining_workspaces == 0
 3144            };
 3145
 3146            if let Some(active_call) = active_call
 3147                && workspace_count == 1
 3148                && cx
 3149                    .update(|_window, cx| active_call.0.is_in_room(cx))
 3150                    .unwrap_or(false)
 3151            {
 3152                if close_intent == CloseIntent::CloseWindow {
 3153                    this.update(cx, |_, cx| cx.emit(Event::Activate))?;
 3154                    let answer = cx.update(|window, cx| {
 3155                        window.prompt(
 3156                            PromptLevel::Warning,
 3157                            "Do you want to leave the current call?",
 3158                            None,
 3159                            &["Close window and hang up", "Cancel"],
 3160                            cx,
 3161                        )
 3162                    })?;
 3163
 3164                    if answer.await.log_err() == Some(1) {
 3165                        return anyhow::Ok(false);
 3166                    } else {
 3167                        if let Ok(task) = cx.update(|_window, cx| active_call.0.hang_up(cx)) {
 3168                            task.await.log_err();
 3169                        }
 3170                    }
 3171                }
 3172                if close_intent == CloseIntent::ReplaceWindow {
 3173                    _ = cx.update(|_window, cx| {
 3174                        let multi_workspace = cx
 3175                            .windows()
 3176                            .iter()
 3177                            .filter_map(|window| window.downcast::<MultiWorkspace>())
 3178                            .next()
 3179                            .unwrap();
 3180                        let project = multi_workspace
 3181                            .read(cx)?
 3182                            .workspace()
 3183                            .read(cx)
 3184                            .project
 3185                            .clone();
 3186                        if project.read(cx).is_shared() {
 3187                            active_call.0.unshare_project(project, cx)?;
 3188                        }
 3189                        Ok::<_, anyhow::Error>(())
 3190                    });
 3191                }
 3192            }
 3193
 3194            let save_result = this
 3195                .update_in(cx, |this, window, cx| {
 3196                    this.save_all_internal(SaveIntent::Close, window, cx)
 3197                })?
 3198                .await;
 3199
 3200            // If we're not quitting, but closing, we remove the workspace from
 3201            // the current session.
 3202            if close_intent != CloseIntent::Quit
 3203                && !save_last_workspace
 3204                && save_result.as_ref().is_ok_and(|&res| res)
 3205            {
 3206                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))?
 3207                    .await;
 3208            }
 3209
 3210            save_result
 3211        })
 3212    }
 3213
 3214    fn save_all(&mut self, action: &SaveAll, window: &mut Window, cx: &mut Context<Self>) {
 3215        self.save_all_internal(
 3216            action.save_intent.unwrap_or(SaveIntent::SaveAll),
 3217            window,
 3218            cx,
 3219        )
 3220        .detach_and_log_err(cx);
 3221    }
 3222
 3223    fn send_keystrokes(
 3224        &mut self,
 3225        action: &SendKeystrokes,
 3226        window: &mut Window,
 3227        cx: &mut Context<Self>,
 3228    ) {
 3229        let keystrokes: Vec<Keystroke> = action
 3230            .0
 3231            .split(' ')
 3232            .flat_map(|k| Keystroke::parse(k).log_err())
 3233            .map(|k| {
 3234                cx.keyboard_mapper()
 3235                    .map_key_equivalent(k, false)
 3236                    .inner()
 3237                    .clone()
 3238            })
 3239            .collect();
 3240        let _ = self.send_keystrokes_impl(keystrokes, window, cx);
 3241    }
 3242
 3243    pub fn send_keystrokes_impl(
 3244        &mut self,
 3245        keystrokes: Vec<Keystroke>,
 3246        window: &mut Window,
 3247        cx: &mut Context<Self>,
 3248    ) -> Shared<Task<()>> {
 3249        let mut state = self.dispatching_keystrokes.borrow_mut();
 3250        if !state.dispatched.insert(keystrokes.clone()) {
 3251            cx.propagate();
 3252            return state.task.clone().unwrap();
 3253        }
 3254
 3255        state.queue.extend(keystrokes);
 3256
 3257        let keystrokes = self.dispatching_keystrokes.clone();
 3258        if state.task.is_none() {
 3259            state.task = Some(
 3260                window
 3261                    .spawn(cx, async move |cx| {
 3262                        // limit to 100 keystrokes to avoid infinite recursion.
 3263                        for _ in 0..100 {
 3264                            let keystroke = {
 3265                                let mut state = keystrokes.borrow_mut();
 3266                                let Some(keystroke) = state.queue.pop_front() else {
 3267                                    state.dispatched.clear();
 3268                                    state.task.take();
 3269                                    return;
 3270                                };
 3271                                keystroke
 3272                            };
 3273                            cx.update(|window, cx| {
 3274                                let focused = window.focused(cx);
 3275                                window.dispatch_keystroke(keystroke.clone(), cx);
 3276                                if window.focused(cx) != focused {
 3277                                    // dispatch_keystroke may cause the focus to change.
 3278                                    // draw's side effect is to schedule the FocusChanged events in the current flush effect cycle
 3279                                    // And we need that to happen before the next keystroke to keep vim mode happy...
 3280                                    // (Note that the tests always do this implicitly, so you must manually test with something like:
 3281                                    //   "bindings": { "g z": ["workspace::SendKeystrokes", ": j <enter> u"]}
 3282                                    // )
 3283                                    window.draw(cx).clear();
 3284                                }
 3285                            })
 3286                            .ok();
 3287
 3288                            // Yield between synthetic keystrokes so deferred focus and
 3289                            // other effects can settle before dispatching the next key.
 3290                            yield_now().await;
 3291                        }
 3292
 3293                        *keystrokes.borrow_mut() = Default::default();
 3294                        log::error!("over 100 keystrokes passed to send_keystrokes");
 3295                    })
 3296                    .shared(),
 3297            );
 3298        }
 3299        state.task.clone().unwrap()
 3300    }
 3301
 3302    /// Prompts the user to save or discard each dirty item, returning
 3303    /// `true` if they confirmed (saved/discarded everything) or `false`
 3304    /// if they cancelled. Used before removing worktree roots during
 3305    /// thread archival.
 3306    pub fn prompt_to_save_or_discard_dirty_items(
 3307        &mut self,
 3308        window: &mut Window,
 3309        cx: &mut Context<Self>,
 3310    ) -> Task<Result<bool>> {
 3311        self.save_all_internal(SaveIntent::Close, window, cx)
 3312    }
 3313
 3314    fn save_all_internal(
 3315        &mut self,
 3316        mut save_intent: SaveIntent,
 3317        window: &mut Window,
 3318        cx: &mut Context<Self>,
 3319    ) -> Task<Result<bool>> {
 3320        if self.project.read(cx).is_disconnected(cx) {
 3321            return Task::ready(Ok(true));
 3322        }
 3323        let dirty_items = self
 3324            .panes
 3325            .iter()
 3326            .flat_map(|pane| {
 3327                pane.read(cx).items().filter_map(|item| {
 3328                    if item.is_dirty(cx) {
 3329                        item.tab_content_text(0, cx);
 3330                        Some((pane.downgrade(), item.boxed_clone()))
 3331                    } else {
 3332                        None
 3333                    }
 3334                })
 3335            })
 3336            .collect::<Vec<_>>();
 3337
 3338        let project = self.project.clone();
 3339        cx.spawn_in(window, async move |workspace, cx| {
 3340            let dirty_items = if save_intent == SaveIntent::Close && !dirty_items.is_empty() {
 3341                let (serialize_tasks, remaining_dirty_items) =
 3342                    workspace.update_in(cx, |workspace, window, cx| {
 3343                        let mut remaining_dirty_items = Vec::new();
 3344                        let mut serialize_tasks = Vec::new();
 3345                        for (pane, item) in dirty_items {
 3346                            if let Some(task) = item
 3347                                .to_serializable_item_handle(cx)
 3348                                .and_then(|handle| handle.serialize(workspace, true, window, cx))
 3349                            {
 3350                                serialize_tasks.push(task);
 3351                            } else {
 3352                                remaining_dirty_items.push((pane, item));
 3353                            }
 3354                        }
 3355                        (serialize_tasks, remaining_dirty_items)
 3356                    })?;
 3357
 3358                futures::future::try_join_all(serialize_tasks).await?;
 3359
 3360                if !remaining_dirty_items.is_empty() {
 3361                    workspace.update(cx, |_, cx| cx.emit(Event::Activate))?;
 3362                }
 3363
 3364                if remaining_dirty_items.len() > 1 {
 3365                    let answer = workspace.update_in(cx, |_, window, cx| {
 3366                        cx.emit(Event::Activate);
 3367                        let detail = Pane::file_names_for_prompt(
 3368                            &mut remaining_dirty_items.iter().map(|(_, handle)| handle),
 3369                            cx,
 3370                        );
 3371                        window.prompt(
 3372                            PromptLevel::Warning,
 3373                            "Do you want to save all changes in the following files?",
 3374                            Some(&detail),
 3375                            &["Save all", "Discard all", "Cancel"],
 3376                            cx,
 3377                        )
 3378                    })?;
 3379                    match answer.await.log_err() {
 3380                        Some(0) => save_intent = SaveIntent::SaveAll,
 3381                        Some(1) => save_intent = SaveIntent::Skip,
 3382                        Some(2) => return Ok(false),
 3383                        _ => {}
 3384                    }
 3385                }
 3386
 3387                remaining_dirty_items
 3388            } else {
 3389                dirty_items
 3390            };
 3391
 3392            for (pane, item) in dirty_items {
 3393                let (singleton, project_entry_ids) = cx.update(|_, cx| {
 3394                    (
 3395                        item.buffer_kind(cx) == ItemBufferKind::Singleton,
 3396                        item.project_entry_ids(cx),
 3397                    )
 3398                })?;
 3399                if (singleton || !project_entry_ids.is_empty())
 3400                    && !Pane::save_item(project.clone(), &pane, &*item, save_intent, cx).await?
 3401                {
 3402                    return Ok(false);
 3403                }
 3404            }
 3405            Ok(true)
 3406        })
 3407    }
 3408
 3409    pub fn open_workspace_for_paths(
 3410        &mut self,
 3411        // replace_current_window: bool,
 3412        mut open_mode: OpenMode,
 3413        paths: Vec<PathBuf>,
 3414        window: &mut Window,
 3415        cx: &mut Context<Self>,
 3416    ) -> Task<Result<Entity<Workspace>>> {
 3417        let requesting_window = window.window_handle().downcast::<MultiWorkspace>();
 3418        let is_remote = self.project.read(cx).is_via_collab();
 3419        let has_worktree = self.project.read(cx).worktrees(cx).next().is_some();
 3420        let has_dirty_items = self.items(cx).any(|item| item.is_dirty(cx));
 3421
 3422        let workspace_is_empty = !is_remote && !has_worktree && !has_dirty_items;
 3423        if workspace_is_empty {
 3424            open_mode = OpenMode::Activate;
 3425        }
 3426
 3427        let app_state = self.app_state.clone();
 3428
 3429        cx.spawn(async move |_, cx| {
 3430            let OpenResult { workspace, .. } = cx
 3431                .update(|cx| {
 3432                    open_paths(
 3433                        &paths,
 3434                        app_state,
 3435                        OpenOptions {
 3436                            requesting_window,
 3437                            open_mode,
 3438                            ..Default::default()
 3439                        },
 3440                        cx,
 3441                    )
 3442                })
 3443                .await?;
 3444            Ok(workspace)
 3445        })
 3446    }
 3447
 3448    #[allow(clippy::type_complexity)]
 3449    pub fn open_paths(
 3450        &mut self,
 3451        mut abs_paths: Vec<PathBuf>,
 3452        options: OpenOptions,
 3453        pane: Option<WeakEntity<Pane>>,
 3454        window: &mut Window,
 3455        cx: &mut Context<Self>,
 3456    ) -> Task<Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>> {
 3457        let fs = self.app_state.fs.clone();
 3458
 3459        let caller_ordered_abs_paths = abs_paths.clone();
 3460
 3461        // Sort the paths to ensure we add worktrees for parents before their children.
 3462        abs_paths.sort_unstable();
 3463        cx.spawn_in(window, async move |this, cx| {
 3464            let mut tasks = Vec::with_capacity(abs_paths.len());
 3465
 3466            for abs_path in &abs_paths {
 3467                let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
 3468                    OpenVisible::All => Some(true),
 3469                    OpenVisible::None => Some(false),
 3470                    OpenVisible::OnlyFiles => match fs.metadata(abs_path).await.log_err() {
 3471                        Some(Some(metadata)) => Some(!metadata.is_dir),
 3472                        Some(None) => Some(true),
 3473                        None => None,
 3474                    },
 3475                    OpenVisible::OnlyDirectories => match fs.metadata(abs_path).await.log_err() {
 3476                        Some(Some(metadata)) => Some(metadata.is_dir),
 3477                        Some(None) => Some(false),
 3478                        None => None,
 3479                    },
 3480                };
 3481                let project_path = match visible {
 3482                    Some(visible) => match this
 3483                        .update(cx, |this, cx| {
 3484                            Workspace::project_path_for_path(
 3485                                this.project.clone(),
 3486                                abs_path,
 3487                                visible,
 3488                                cx,
 3489                            )
 3490                        })
 3491                        .log_err()
 3492                    {
 3493                        Some(project_path) => project_path.await.log_err(),
 3494                        None => None,
 3495                    },
 3496                    None => None,
 3497                };
 3498
 3499                let this = this.clone();
 3500                let abs_path: Arc<Path> = SanitizedPath::new(&abs_path).as_path().into();
 3501                let fs = fs.clone();
 3502                let pane = pane.clone();
 3503                let task = cx.spawn(async move |cx| {
 3504                    let (_worktree, project_path) = project_path?;
 3505                    if fs.is_dir(&abs_path).await {
 3506                        // Opening a directory should not race to update the active entry.
 3507                        // We'll select/reveal a deterministic final entry after all paths finish opening.
 3508                        None
 3509                    } else {
 3510                        Some(
 3511                            this.update_in(cx, |this, window, cx| {
 3512                                this.open_path(
 3513                                    project_path,
 3514                                    pane,
 3515                                    options.focus.unwrap_or(true),
 3516                                    window,
 3517                                    cx,
 3518                                )
 3519                            })
 3520                            .ok()?
 3521                            .await,
 3522                        )
 3523                    }
 3524                });
 3525                tasks.push(task);
 3526            }
 3527
 3528            let results = futures::future::join_all(tasks).await;
 3529
 3530            // Determine the winner using the fake/abstract FS metadata, not `Path::is_dir`.
 3531            let mut winner: Option<(PathBuf, bool)> = None;
 3532            for abs_path in caller_ordered_abs_paths.into_iter().rev() {
 3533                if let Some(Some(metadata)) = fs.metadata(&abs_path).await.log_err() {
 3534                    if !metadata.is_dir {
 3535                        winner = Some((abs_path, false));
 3536                        break;
 3537                    }
 3538                    if winner.is_none() {
 3539                        winner = Some((abs_path, true));
 3540                    }
 3541                } else if winner.is_none() {
 3542                    winner = Some((abs_path, false));
 3543                }
 3544            }
 3545
 3546            // Compute the winner entry id on the foreground thread and emit once, after all
 3547            // paths finish opening. This avoids races between concurrently-opening paths
 3548            // (directories in particular) and makes the resulting project panel selection
 3549            // deterministic.
 3550            if let Some((winner_abs_path, winner_is_dir)) = winner {
 3551                'emit_winner: {
 3552                    let winner_abs_path: Arc<Path> =
 3553                        SanitizedPath::new(&winner_abs_path).as_path().into();
 3554
 3555                    let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
 3556                        OpenVisible::All => true,
 3557                        OpenVisible::None => false,
 3558                        OpenVisible::OnlyFiles => !winner_is_dir,
 3559                        OpenVisible::OnlyDirectories => winner_is_dir,
 3560                    };
 3561
 3562                    let Some(worktree_task) = this
 3563                        .update(cx, |workspace, cx| {
 3564                            workspace.project.update(cx, |project, cx| {
 3565                                project.find_or_create_worktree(
 3566                                    winner_abs_path.as_ref(),
 3567                                    visible,
 3568                                    cx,
 3569                                )
 3570                            })
 3571                        })
 3572                        .ok()
 3573                    else {
 3574                        break 'emit_winner;
 3575                    };
 3576
 3577                    let Ok((worktree, _)) = worktree_task.await else {
 3578                        break 'emit_winner;
 3579                    };
 3580
 3581                    let Ok(Some(entry_id)) = this.update(cx, |_, cx| {
 3582                        let worktree = worktree.read(cx);
 3583                        let worktree_abs_path = worktree.abs_path();
 3584                        let entry = if winner_abs_path.as_ref() == worktree_abs_path.as_ref() {
 3585                            worktree.root_entry()
 3586                        } else {
 3587                            winner_abs_path
 3588                                .strip_prefix(worktree_abs_path.as_ref())
 3589                                .ok()
 3590                                .and_then(|relative_path| {
 3591                                    let relative_path =
 3592                                        RelPath::new(relative_path, PathStyle::local())
 3593                                            .log_err()?;
 3594                                    worktree.entry_for_path(&relative_path)
 3595                                })
 3596                        }?;
 3597                        Some(entry.id)
 3598                    }) else {
 3599                        break 'emit_winner;
 3600                    };
 3601
 3602                    this.update(cx, |workspace, cx| {
 3603                        workspace.project.update(cx, |_, cx| {
 3604                            cx.emit(project::Event::ActiveEntryChanged(Some(entry_id)));
 3605                        });
 3606                    })
 3607                    .ok();
 3608                }
 3609            }
 3610
 3611            results
 3612        })
 3613    }
 3614
 3615    pub fn open_resolved_path(
 3616        &mut self,
 3617        path: ResolvedPath,
 3618        window: &mut Window,
 3619        cx: &mut Context<Self>,
 3620    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3621        match path {
 3622            ResolvedPath::ProjectPath { project_path, .. } => {
 3623                self.open_path(project_path, None, true, window, cx)
 3624            }
 3625            ResolvedPath::AbsPath { path, .. } => self.open_abs_path(
 3626                PathBuf::from(path),
 3627                OpenOptions {
 3628                    visible: Some(OpenVisible::None),
 3629                    ..Default::default()
 3630                },
 3631                window,
 3632                cx,
 3633            ),
 3634        }
 3635    }
 3636
 3637    pub fn absolute_path_of_worktree(
 3638        &self,
 3639        worktree_id: WorktreeId,
 3640        cx: &mut Context<Self>,
 3641    ) -> Option<PathBuf> {
 3642        self.project
 3643            .read(cx)
 3644            .worktree_for_id(worktree_id, cx)
 3645            // TODO: use `abs_path` or `root_dir`
 3646            .map(|wt| wt.read(cx).abs_path().as_ref().to_path_buf())
 3647    }
 3648
 3649    pub fn add_folder_to_project(
 3650        &mut self,
 3651        _: &AddFolderToProject,
 3652        window: &mut Window,
 3653        cx: &mut Context<Self>,
 3654    ) {
 3655        let project = self.project.read(cx);
 3656        if project.is_via_collab() {
 3657            self.show_error(
 3658                &anyhow!("You cannot add folders to someone else's project"),
 3659                cx,
 3660            );
 3661            return;
 3662        }
 3663        let paths = self.prompt_for_open_path(
 3664            PathPromptOptions {
 3665                files: false,
 3666                directories: true,
 3667                multiple: true,
 3668                prompt: None,
 3669            },
 3670            DirectoryLister::Project(self.project.clone()),
 3671            window,
 3672            cx,
 3673        );
 3674        cx.spawn_in(window, async move |this, cx| {
 3675            if let Some(paths) = paths.await.log_err().flatten() {
 3676                let results = this
 3677                    .update_in(cx, |this, window, cx| {
 3678                        this.open_paths(
 3679                            paths,
 3680                            OpenOptions {
 3681                                visible: Some(OpenVisible::All),
 3682                                ..Default::default()
 3683                            },
 3684                            None,
 3685                            window,
 3686                            cx,
 3687                        )
 3688                    })?
 3689                    .await;
 3690                for result in results.into_iter().flatten() {
 3691                    result.log_err();
 3692                }
 3693            }
 3694            anyhow::Ok(())
 3695        })
 3696        .detach_and_log_err(cx);
 3697    }
 3698
 3699    pub fn project_path_for_path(
 3700        project: Entity<Project>,
 3701        abs_path: &Path,
 3702        visible: bool,
 3703        cx: &mut App,
 3704    ) -> Task<Result<(Entity<Worktree>, ProjectPath)>> {
 3705        let entry = project.update(cx, |project, cx| {
 3706            project.find_or_create_worktree(abs_path, visible, cx)
 3707        });
 3708        cx.spawn(async move |cx| {
 3709            let (worktree, path) = entry.await?;
 3710            let worktree_id = worktree.read_with(cx, |t, _| t.id());
 3711            Ok((worktree, ProjectPath { worktree_id, path }))
 3712        })
 3713    }
 3714
 3715    pub fn items<'a>(&'a self, cx: &'a App) -> impl 'a + Iterator<Item = &'a Box<dyn ItemHandle>> {
 3716        self.panes.iter().flat_map(|pane| pane.read(cx).items())
 3717    }
 3718
 3719    pub fn item_of_type<T: Item>(&self, cx: &App) -> Option<Entity<T>> {
 3720        self.items_of_type(cx).max_by_key(|item| item.item_id())
 3721    }
 3722
 3723    pub fn items_of_type<'a, T: Item>(
 3724        &'a self,
 3725        cx: &'a App,
 3726    ) -> impl 'a + Iterator<Item = Entity<T>> {
 3727        self.panes
 3728            .iter()
 3729            .flat_map(|pane| pane.read(cx).items_of_type())
 3730    }
 3731
 3732    pub fn active_item(&self, cx: &App) -> Option<Box<dyn ItemHandle>> {
 3733        self.active_pane().read(cx).active_item()
 3734    }
 3735
 3736    pub fn active_item_as<I: 'static>(&self, cx: &App) -> Option<Entity<I>> {
 3737        let item = self.active_item(cx)?;
 3738        item.to_any_view().downcast::<I>().ok()
 3739    }
 3740
 3741    fn active_project_path(&self, cx: &App) -> Option<ProjectPath> {
 3742        self.active_item(cx).and_then(|item| item.project_path(cx))
 3743    }
 3744
 3745    pub fn most_recent_active_path(&self, cx: &App) -> Option<PathBuf> {
 3746        self.recent_navigation_history_iter(cx)
 3747            .filter_map(|(path, abs_path)| {
 3748                let worktree = self
 3749                    .project
 3750                    .read(cx)
 3751                    .worktree_for_id(path.worktree_id, cx)?;
 3752                if worktree.read(cx).is_visible() {
 3753                    abs_path
 3754                } else {
 3755                    None
 3756                }
 3757            })
 3758            .next()
 3759    }
 3760
 3761    pub fn save_active_item(
 3762        &mut self,
 3763        save_intent: SaveIntent,
 3764        window: &mut Window,
 3765        cx: &mut App,
 3766    ) -> Task<Result<()>> {
 3767        let project = self.project.clone();
 3768        let pane = self.active_pane();
 3769        let item = pane.read(cx).active_item();
 3770        let pane = pane.downgrade();
 3771
 3772        window.spawn(cx, async move |cx| {
 3773            if let Some(item) = item {
 3774                Pane::save_item(project, &pane, item.as_ref(), save_intent, cx)
 3775                    .await
 3776                    .map(|_| ())
 3777            } else {
 3778                Ok(())
 3779            }
 3780        })
 3781    }
 3782
 3783    pub fn close_inactive_items_and_panes(
 3784        &mut self,
 3785        action: &CloseInactiveTabsAndPanes,
 3786        window: &mut Window,
 3787        cx: &mut Context<Self>,
 3788    ) {
 3789        if let Some(task) = self.close_all_internal(
 3790            true,
 3791            action.save_intent.unwrap_or(SaveIntent::Close),
 3792            window,
 3793            cx,
 3794        ) {
 3795            task.detach_and_log_err(cx)
 3796        }
 3797    }
 3798
 3799    pub fn close_all_items_and_panes(
 3800        &mut self,
 3801        action: &CloseAllItemsAndPanes,
 3802        window: &mut Window,
 3803        cx: &mut Context<Self>,
 3804    ) {
 3805        if let Some(task) = self.close_all_internal(
 3806            false,
 3807            action.save_intent.unwrap_or(SaveIntent::Close),
 3808            window,
 3809            cx,
 3810        ) {
 3811            task.detach_and_log_err(cx)
 3812        }
 3813    }
 3814
 3815    /// Closes the active item across all panes.
 3816    pub fn close_item_in_all_panes(
 3817        &mut self,
 3818        action: &CloseItemInAllPanes,
 3819        window: &mut Window,
 3820        cx: &mut Context<Self>,
 3821    ) {
 3822        let Some(active_item) = self.active_pane().read(cx).active_item() else {
 3823            return;
 3824        };
 3825
 3826        let save_intent = action.save_intent.unwrap_or(SaveIntent::Close);
 3827        let close_pinned = action.close_pinned;
 3828
 3829        if let Some(project_path) = active_item.project_path(cx) {
 3830            self.close_items_with_project_path(
 3831                &project_path,
 3832                save_intent,
 3833                close_pinned,
 3834                window,
 3835                cx,
 3836            );
 3837        } else if close_pinned || !self.active_pane().read(cx).is_active_item_pinned() {
 3838            let item_id = active_item.item_id();
 3839            self.active_pane().update(cx, |pane, cx| {
 3840                pane.close_item_by_id(item_id, save_intent, window, cx)
 3841                    .detach_and_log_err(cx);
 3842            });
 3843        }
 3844    }
 3845
 3846    /// Closes all items with the given project path across all panes.
 3847    pub fn close_items_with_project_path(
 3848        &mut self,
 3849        project_path: &ProjectPath,
 3850        save_intent: SaveIntent,
 3851        close_pinned: bool,
 3852        window: &mut Window,
 3853        cx: &mut Context<Self>,
 3854    ) {
 3855        let panes = self.panes().to_vec();
 3856        for pane in panes {
 3857            pane.update(cx, |pane, cx| {
 3858                pane.close_items_for_project_path(
 3859                    project_path,
 3860                    save_intent,
 3861                    close_pinned,
 3862                    window,
 3863                    cx,
 3864                )
 3865                .detach_and_log_err(cx);
 3866            });
 3867        }
 3868    }
 3869
 3870    fn close_all_internal(
 3871        &mut self,
 3872        retain_active_pane: bool,
 3873        save_intent: SaveIntent,
 3874        window: &mut Window,
 3875        cx: &mut Context<Self>,
 3876    ) -> Option<Task<Result<()>>> {
 3877        let current_pane = self.active_pane();
 3878
 3879        let mut tasks = Vec::new();
 3880
 3881        if retain_active_pane {
 3882            let current_pane_close = current_pane.update(cx, |pane, cx| {
 3883                pane.close_other_items(
 3884                    &CloseOtherItems {
 3885                        save_intent: None,
 3886                        close_pinned: false,
 3887                    },
 3888                    None,
 3889                    window,
 3890                    cx,
 3891                )
 3892            });
 3893
 3894            tasks.push(current_pane_close);
 3895        }
 3896
 3897        for pane in self.panes() {
 3898            if retain_active_pane && pane.entity_id() == current_pane.entity_id() {
 3899                continue;
 3900            }
 3901
 3902            let close_pane_items = pane.update(cx, |pane: &mut Pane, cx| {
 3903                pane.close_all_items(
 3904                    &CloseAllItems {
 3905                        save_intent: Some(save_intent),
 3906                        close_pinned: false,
 3907                    },
 3908                    window,
 3909                    cx,
 3910                )
 3911            });
 3912
 3913            tasks.push(close_pane_items)
 3914        }
 3915
 3916        if tasks.is_empty() {
 3917            None
 3918        } else {
 3919            Some(cx.spawn_in(window, async move |_, _| {
 3920                for task in tasks {
 3921                    task.await?
 3922                }
 3923                Ok(())
 3924            }))
 3925        }
 3926    }
 3927
 3928    pub fn is_dock_at_position_open(&self, position: DockPosition, cx: &mut Context<Self>) -> bool {
 3929        self.dock_at_position(position).read(cx).is_open()
 3930    }
 3931
 3932    pub fn toggle_dock(
 3933        &mut self,
 3934        dock_side: DockPosition,
 3935        window: &mut Window,
 3936        cx: &mut Context<Self>,
 3937    ) {
 3938        let mut focus_center = false;
 3939        let mut reveal_dock = false;
 3940
 3941        let other_is_zoomed = self.zoomed.is_some() && self.zoomed_position != Some(dock_side);
 3942        let was_visible = self.is_dock_at_position_open(dock_side, cx) && !other_is_zoomed;
 3943
 3944        if let Some(panel) = self.dock_at_position(dock_side).read(cx).active_panel() {
 3945            telemetry::event!(
 3946                "Panel Button Clicked",
 3947                name = panel.persistent_name(),
 3948                toggle_state = !was_visible
 3949            );
 3950        }
 3951        if was_visible {
 3952            self.save_open_dock_positions(cx);
 3953        }
 3954
 3955        let dock = self.dock_at_position(dock_side);
 3956        dock.update(cx, |dock, cx| {
 3957            dock.set_open(!was_visible, window, cx);
 3958
 3959            if dock.active_panel().is_none() {
 3960                let Some(panel_ix) = dock
 3961                    .first_enabled_panel_idx(cx)
 3962                    .log_with_level(log::Level::Info)
 3963                else {
 3964                    return;
 3965                };
 3966                dock.activate_panel(panel_ix, window, cx);
 3967            }
 3968
 3969            if let Some(active_panel) = dock.active_panel() {
 3970                if was_visible {
 3971                    if active_panel
 3972                        .panel_focus_handle(cx)
 3973                        .contains_focused(window, cx)
 3974                    {
 3975                        focus_center = true;
 3976                    }
 3977                } else {
 3978                    let focus_handle = &active_panel.panel_focus_handle(cx);
 3979                    window.focus(focus_handle, cx);
 3980                    reveal_dock = true;
 3981                }
 3982            }
 3983        });
 3984
 3985        if reveal_dock {
 3986            self.dismiss_zoomed_items_to_reveal(Some(dock_side), window, cx);
 3987        }
 3988
 3989        if focus_center {
 3990            self.active_pane
 3991                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx))
 3992        }
 3993
 3994        cx.notify();
 3995        self.serialize_workspace(window, cx);
 3996    }
 3997
 3998    fn active_dock(&self, window: &Window, cx: &Context<Self>) -> Option<&Entity<Dock>> {
 3999        self.all_docks().into_iter().find(|&dock| {
 4000            dock.read(cx).is_open() && dock.focus_handle(cx).contains_focused(window, cx)
 4001        })
 4002    }
 4003
 4004    fn close_active_dock(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
 4005        if let Some(dock) = self.active_dock(window, cx).cloned() {
 4006            self.save_open_dock_positions(cx);
 4007            dock.update(cx, |dock, cx| {
 4008                dock.set_open(false, window, cx);
 4009            });
 4010            return true;
 4011        }
 4012        false
 4013    }
 4014
 4015    pub fn close_all_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4016        self.save_open_dock_positions(cx);
 4017        for dock in self.all_docks() {
 4018            dock.update(cx, |dock, cx| {
 4019                dock.set_open(false, window, cx);
 4020            });
 4021        }
 4022
 4023        cx.focus_self(window);
 4024        cx.notify();
 4025        self.serialize_workspace(window, cx);
 4026    }
 4027
 4028    fn get_open_dock_positions(&self, cx: &Context<Self>) -> Vec<DockPosition> {
 4029        self.all_docks()
 4030            .into_iter()
 4031            .filter_map(|dock| {
 4032                let dock_ref = dock.read(cx);
 4033                if dock_ref.is_open() {
 4034                    Some(dock_ref.position())
 4035                } else {
 4036                    None
 4037                }
 4038            })
 4039            .collect()
 4040    }
 4041
 4042    /// Saves the positions of currently open docks.
 4043    ///
 4044    /// Updates `last_open_dock_positions` with positions of all currently open
 4045    /// docks, to later be restored by the 'Toggle All Docks' action.
 4046    fn save_open_dock_positions(&mut self, cx: &mut Context<Self>) {
 4047        let open_dock_positions = self.get_open_dock_positions(cx);
 4048        if !open_dock_positions.is_empty() {
 4049            self.last_open_dock_positions = open_dock_positions;
 4050        }
 4051    }
 4052
 4053    /// Toggles all docks between open and closed states.
 4054    ///
 4055    /// If any docks are open, closes all and remembers their positions. If all
 4056    /// docks are closed, restores the last remembered dock configuration.
 4057    fn toggle_all_docks(
 4058        &mut self,
 4059        _: &ToggleAllDocks,
 4060        window: &mut Window,
 4061        cx: &mut Context<Self>,
 4062    ) {
 4063        let open_dock_positions = self.get_open_dock_positions(cx);
 4064
 4065        if !open_dock_positions.is_empty() {
 4066            self.close_all_docks(window, cx);
 4067        } else if !self.last_open_dock_positions.is_empty() {
 4068            self.restore_last_open_docks(window, cx);
 4069        }
 4070    }
 4071
 4072    /// Reopens docks from the most recently remembered configuration.
 4073    ///
 4074    /// Opens all docks whose positions are stored in `last_open_dock_positions`
 4075    /// and clears the stored positions.
 4076    fn restore_last_open_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4077        let positions_to_open = std::mem::take(&mut self.last_open_dock_positions);
 4078
 4079        for position in positions_to_open {
 4080            let dock = self.dock_at_position(position);
 4081            dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
 4082        }
 4083
 4084        cx.focus_self(window);
 4085        cx.notify();
 4086        self.serialize_workspace(window, cx);
 4087    }
 4088
 4089    /// Transfer focus to the panel of the given type.
 4090    pub fn focus_panel<T: Panel>(
 4091        &mut self,
 4092        window: &mut Window,
 4093        cx: &mut Context<Self>,
 4094    ) -> Option<Entity<T>> {
 4095        let panel = self.focus_or_unfocus_panel::<T>(window, cx, &mut |_, _, _| true)?;
 4096        panel.to_any().downcast().ok()
 4097    }
 4098
 4099    /// Focus the panel of the given type if it isn't already focused. If it is
 4100    /// already focused, then transfer focus back to the workspace center.
 4101    /// When the `close_panel_on_toggle` setting is enabled, also closes the
 4102    /// panel when transferring focus back to the center.
 4103    pub fn toggle_panel_focus<T: Panel>(
 4104        &mut self,
 4105        window: &mut Window,
 4106        cx: &mut Context<Self>,
 4107    ) -> bool {
 4108        let mut did_focus_panel = false;
 4109        self.focus_or_unfocus_panel::<T>(window, cx, &mut |panel, window, cx| {
 4110            did_focus_panel = !panel.panel_focus_handle(cx).contains_focused(window, cx);
 4111            did_focus_panel
 4112        });
 4113
 4114        if !did_focus_panel && WorkspaceSettings::get_global(cx).close_panel_on_toggle {
 4115            self.close_panel::<T>(window, cx);
 4116        }
 4117
 4118        telemetry::event!(
 4119            "Panel Button Clicked",
 4120            name = T::persistent_name(),
 4121            toggle_state = did_focus_panel
 4122        );
 4123
 4124        did_focus_panel
 4125    }
 4126
 4127    pub fn focus_center_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4128        if let Some(item) = self.active_item(cx) {
 4129            item.item_focus_handle(cx).focus(window, cx);
 4130        } else {
 4131            log::error!("Could not find a focus target when switching focus to the center panes",);
 4132        }
 4133    }
 4134
 4135    pub fn activate_panel_for_proto_id(
 4136        &mut self,
 4137        panel_id: PanelId,
 4138        window: &mut Window,
 4139        cx: &mut Context<Self>,
 4140    ) -> Option<Arc<dyn PanelHandle>> {
 4141        let mut panel = None;
 4142        for dock in self.all_docks() {
 4143            if let Some(panel_index) = dock.read(cx).panel_index_for_proto_id(panel_id) {
 4144                panel = dock.update(cx, |dock, cx| {
 4145                    dock.activate_panel(panel_index, window, cx);
 4146                    dock.set_open(true, window, cx);
 4147                    dock.active_panel().cloned()
 4148                });
 4149                break;
 4150            }
 4151        }
 4152
 4153        if panel.is_some() {
 4154            cx.notify();
 4155            self.serialize_workspace(window, cx);
 4156        }
 4157
 4158        panel
 4159    }
 4160
 4161    /// Focus or unfocus the given panel type, depending on the given callback.
 4162    fn focus_or_unfocus_panel<T: Panel>(
 4163        &mut self,
 4164        window: &mut Window,
 4165        cx: &mut Context<Self>,
 4166        should_focus: &mut dyn FnMut(&dyn PanelHandle, &mut Window, &mut Context<Dock>) -> bool,
 4167    ) -> Option<Arc<dyn PanelHandle>> {
 4168        let mut result_panel = None;
 4169        let mut serialize = false;
 4170        for dock in self.all_docks() {
 4171            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 4172                let mut focus_center = false;
 4173                let panel = dock.update(cx, |dock, cx| {
 4174                    dock.activate_panel(panel_index, window, cx);
 4175
 4176                    let panel = dock.active_panel().cloned();
 4177                    if let Some(panel) = panel.as_ref() {
 4178                        if should_focus(&**panel, window, cx) {
 4179                            dock.set_open(true, window, cx);
 4180                            panel.panel_focus_handle(cx).focus(window, cx);
 4181                        } else {
 4182                            focus_center = true;
 4183                        }
 4184                    }
 4185                    panel
 4186                });
 4187
 4188                if focus_center {
 4189                    self.active_pane
 4190                        .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx))
 4191                }
 4192
 4193                result_panel = panel;
 4194                serialize = true;
 4195                break;
 4196            }
 4197        }
 4198
 4199        if serialize {
 4200            self.serialize_workspace(window, cx);
 4201        }
 4202
 4203        cx.notify();
 4204        result_panel
 4205    }
 4206
 4207    /// Open the panel of the given type
 4208    pub fn open_panel<T: Panel>(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4209        for dock in self.all_docks() {
 4210            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 4211                dock.update(cx, |dock, cx| {
 4212                    dock.activate_panel(panel_index, window, cx);
 4213                    dock.set_open(true, window, cx);
 4214                });
 4215            }
 4216        }
 4217    }
 4218
 4219    /// Open the panel of the given type, dismissing any zoomed items that
 4220    /// would obscure it (e.g. a zoomed terminal).
 4221    pub fn reveal_panel<T: Panel>(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4222        let dock_position = self.all_docks().iter().find_map(|dock| {
 4223            let dock = dock.read(cx);
 4224            dock.panel_index_for_type::<T>().map(|_| dock.position())
 4225        });
 4226        self.dismiss_zoomed_items_to_reveal(dock_position, window, cx);
 4227        self.open_panel::<T>(window, cx);
 4228    }
 4229
 4230    pub fn close_panel<T: Panel>(&self, window: &mut Window, cx: &mut Context<Self>) {
 4231        for dock in self.all_docks().iter() {
 4232            dock.update(cx, |dock, cx| {
 4233                if dock.panel::<T>().is_some() {
 4234                    dock.set_open(false, window, cx)
 4235                }
 4236            })
 4237        }
 4238    }
 4239
 4240    pub fn panel<T: Panel>(&self, cx: &App) -> Option<Entity<T>> {
 4241        self.all_docks()
 4242            .iter()
 4243            .find_map(|dock| dock.read(cx).panel::<T>())
 4244    }
 4245
 4246    fn dismiss_zoomed_items_to_reveal(
 4247        &mut self,
 4248        dock_to_reveal: Option<DockPosition>,
 4249        window: &mut Window,
 4250        cx: &mut Context<Self>,
 4251    ) {
 4252        // If a center pane is zoomed, unzoom it.
 4253        for pane in &self.panes {
 4254            if pane != &self.active_pane || dock_to_reveal.is_some() {
 4255                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 4256            }
 4257        }
 4258
 4259        // If another dock is zoomed, hide it.
 4260        let mut focus_center = false;
 4261        for dock in self.all_docks() {
 4262            dock.update(cx, |dock, cx| {
 4263                if Some(dock.position()) != dock_to_reveal
 4264                    && let Some(panel) = dock.active_panel()
 4265                    && panel.is_zoomed(window, cx)
 4266                {
 4267                    focus_center |= panel.panel_focus_handle(cx).contains_focused(window, cx);
 4268                    dock.set_open(false, window, cx);
 4269                }
 4270            });
 4271        }
 4272
 4273        if focus_center {
 4274            self.active_pane
 4275                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx))
 4276        }
 4277
 4278        if self.zoomed_position != dock_to_reveal {
 4279            self.zoomed = None;
 4280            self.zoomed_position = None;
 4281            cx.emit(Event::ZoomChanged);
 4282        }
 4283
 4284        cx.notify();
 4285    }
 4286
 4287    fn add_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 4288        let pane = cx.new(|cx| {
 4289            let mut pane = Pane::new(
 4290                self.weak_handle(),
 4291                self.project.clone(),
 4292                self.pane_history_timestamp.clone(),
 4293                None,
 4294                NewFile.boxed_clone(),
 4295                true,
 4296                window,
 4297                cx,
 4298            );
 4299            pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 4300            pane
 4301        });
 4302        cx.subscribe_in(&pane, window, Self::handle_pane_event)
 4303            .detach();
 4304        self.panes.push(pane.clone());
 4305
 4306        window.focus(&pane.focus_handle(cx), cx);
 4307
 4308        cx.emit(Event::PaneAdded(pane.clone()));
 4309        pane
 4310    }
 4311
 4312    pub fn add_item_to_center(
 4313        &mut self,
 4314        item: Box<dyn ItemHandle>,
 4315        window: &mut Window,
 4316        cx: &mut Context<Self>,
 4317    ) -> bool {
 4318        if let Some(center_pane) = self.last_active_center_pane.clone() {
 4319            if let Some(center_pane) = center_pane.upgrade() {
 4320                center_pane.update(cx, |pane, cx| {
 4321                    pane.add_item(item, true, true, None, window, cx)
 4322                });
 4323                true
 4324            } else {
 4325                false
 4326            }
 4327        } else {
 4328            false
 4329        }
 4330    }
 4331
 4332    pub fn add_item_to_active_pane(
 4333        &mut self,
 4334        item: Box<dyn ItemHandle>,
 4335        destination_index: Option<usize>,
 4336        focus_item: bool,
 4337        window: &mut Window,
 4338        cx: &mut App,
 4339    ) {
 4340        self.add_item(
 4341            self.active_pane.clone(),
 4342            item,
 4343            destination_index,
 4344            false,
 4345            focus_item,
 4346            window,
 4347            cx,
 4348        )
 4349    }
 4350
 4351    pub fn add_item(
 4352        &mut self,
 4353        pane: Entity<Pane>,
 4354        item: Box<dyn ItemHandle>,
 4355        destination_index: Option<usize>,
 4356        activate_pane: bool,
 4357        focus_item: bool,
 4358        window: &mut Window,
 4359        cx: &mut App,
 4360    ) {
 4361        pane.update(cx, |pane, cx| {
 4362            pane.add_item(
 4363                item,
 4364                activate_pane,
 4365                focus_item,
 4366                destination_index,
 4367                window,
 4368                cx,
 4369            )
 4370        });
 4371    }
 4372
 4373    pub fn split_item(
 4374        &mut self,
 4375        split_direction: SplitDirection,
 4376        item: Box<dyn ItemHandle>,
 4377        window: &mut Window,
 4378        cx: &mut Context<Self>,
 4379    ) {
 4380        let new_pane = self.split_pane(self.active_pane.clone(), split_direction, window, cx);
 4381        self.add_item(new_pane, item, None, true, true, window, cx);
 4382    }
 4383
 4384    pub fn open_abs_path(
 4385        &mut self,
 4386        abs_path: PathBuf,
 4387        options: OpenOptions,
 4388        window: &mut Window,
 4389        cx: &mut Context<Self>,
 4390    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4391        cx.spawn_in(window, async move |workspace, cx| {
 4392            let open_paths_task_result = workspace
 4393                .update_in(cx, |workspace, window, cx| {
 4394                    workspace.open_paths(vec![abs_path.clone()], options, None, window, cx)
 4395                })
 4396                .with_context(|| format!("open abs path {abs_path:?} task spawn"))?
 4397                .await;
 4398            anyhow::ensure!(
 4399                open_paths_task_result.len() == 1,
 4400                "open abs path {abs_path:?} task returned incorrect number of results"
 4401            );
 4402            match open_paths_task_result
 4403                .into_iter()
 4404                .next()
 4405                .expect("ensured single task result")
 4406            {
 4407                Some(open_result) => {
 4408                    open_result.with_context(|| format!("open abs path {abs_path:?} task join"))
 4409                }
 4410                None => anyhow::bail!("open abs path {abs_path:?} task returned None"),
 4411            }
 4412        })
 4413    }
 4414
 4415    pub fn split_abs_path(
 4416        &mut self,
 4417        abs_path: PathBuf,
 4418        visible: bool,
 4419        window: &mut Window,
 4420        cx: &mut Context<Self>,
 4421    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4422        let project_path_task =
 4423            Workspace::project_path_for_path(self.project.clone(), &abs_path, visible, cx);
 4424        cx.spawn_in(window, async move |this, cx| {
 4425            let (_, path) = project_path_task.await?;
 4426            this.update_in(cx, |this, window, cx| this.split_path(path, window, cx))?
 4427                .await
 4428        })
 4429    }
 4430
 4431    pub fn open_path(
 4432        &mut self,
 4433        path: impl Into<ProjectPath>,
 4434        pane: Option<WeakEntity<Pane>>,
 4435        focus_item: bool,
 4436        window: &mut Window,
 4437        cx: &mut App,
 4438    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4439        self.open_path_preview(path, pane, focus_item, false, true, window, cx)
 4440    }
 4441
 4442    pub fn open_path_preview(
 4443        &mut self,
 4444        path: impl Into<ProjectPath>,
 4445        pane: Option<WeakEntity<Pane>>,
 4446        focus_item: bool,
 4447        allow_preview: bool,
 4448        activate: bool,
 4449        window: &mut Window,
 4450        cx: &mut App,
 4451    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4452        let pane = pane.unwrap_or_else(|| {
 4453            self.last_active_center_pane.clone().unwrap_or_else(|| {
 4454                self.panes
 4455                    .first()
 4456                    .expect("There must be an active pane")
 4457                    .downgrade()
 4458            })
 4459        });
 4460
 4461        let project_path = path.into();
 4462        let task = self.load_path(project_path.clone(), window, cx);
 4463        window.spawn(cx, async move |cx| {
 4464            let (project_entry_id, build_item) = task.await?;
 4465
 4466            pane.update_in(cx, |pane, window, cx| {
 4467                pane.open_item(
 4468                    project_entry_id,
 4469                    project_path,
 4470                    focus_item,
 4471                    allow_preview,
 4472                    activate,
 4473                    None,
 4474                    window,
 4475                    cx,
 4476                    build_item,
 4477                )
 4478            })
 4479        })
 4480    }
 4481
 4482    pub fn split_path(
 4483        &mut self,
 4484        path: impl Into<ProjectPath>,
 4485        window: &mut Window,
 4486        cx: &mut Context<Self>,
 4487    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4488        self.split_path_preview(path, false, None, window, cx)
 4489    }
 4490
 4491    pub fn split_path_preview(
 4492        &mut self,
 4493        path: impl Into<ProjectPath>,
 4494        allow_preview: bool,
 4495        split_direction: Option<SplitDirection>,
 4496        window: &mut Window,
 4497        cx: &mut Context<Self>,
 4498    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4499        let pane = self.last_active_center_pane.clone().unwrap_or_else(|| {
 4500            self.panes
 4501                .first()
 4502                .expect("There must be an active pane")
 4503                .downgrade()
 4504        });
 4505
 4506        if let Member::Pane(center_pane) = &self.center.root
 4507            && center_pane.read(cx).items_len() == 0
 4508        {
 4509            return self.open_path(path, Some(pane), true, window, cx);
 4510        }
 4511
 4512        let project_path = path.into();
 4513        let task = self.load_path(project_path.clone(), window, cx);
 4514        cx.spawn_in(window, async move |this, cx| {
 4515            let (project_entry_id, build_item) = task.await?;
 4516            this.update_in(cx, move |this, window, cx| -> Option<_> {
 4517                let pane = pane.upgrade()?;
 4518                let new_pane = this.split_pane(
 4519                    pane,
 4520                    split_direction.unwrap_or(SplitDirection::Right),
 4521                    window,
 4522                    cx,
 4523                );
 4524                new_pane.update(cx, |new_pane, cx| {
 4525                    Some(new_pane.open_item(
 4526                        project_entry_id,
 4527                        project_path,
 4528                        true,
 4529                        allow_preview,
 4530                        true,
 4531                        None,
 4532                        window,
 4533                        cx,
 4534                        build_item,
 4535                    ))
 4536                })
 4537            })
 4538            .map(|option| option.context("pane was dropped"))?
 4539        })
 4540    }
 4541
 4542    fn load_path(
 4543        &mut self,
 4544        path: ProjectPath,
 4545        window: &mut Window,
 4546        cx: &mut App,
 4547    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
 4548        let registry = cx.default_global::<ProjectItemRegistry>().clone();
 4549        registry.open_path(self.project(), &path, window, cx)
 4550    }
 4551
 4552    pub fn find_project_item<T>(
 4553        &self,
 4554        pane: &Entity<Pane>,
 4555        project_item: &Entity<T::Item>,
 4556        cx: &App,
 4557    ) -> Option<Entity<T>>
 4558    where
 4559        T: ProjectItem,
 4560    {
 4561        use project::ProjectItem as _;
 4562        let project_item = project_item.read(cx);
 4563        let entry_id = project_item.entry_id(cx);
 4564        let project_path = project_item.project_path(cx);
 4565
 4566        let mut item = None;
 4567        if let Some(entry_id) = entry_id {
 4568            item = pane.read(cx).item_for_entry(entry_id, cx);
 4569        }
 4570        if item.is_none()
 4571            && let Some(project_path) = project_path
 4572        {
 4573            item = pane.read(cx).item_for_path(project_path, cx);
 4574        }
 4575
 4576        item.and_then(|item| item.downcast::<T>())
 4577    }
 4578
 4579    pub fn is_project_item_open<T>(
 4580        &self,
 4581        pane: &Entity<Pane>,
 4582        project_item: &Entity<T::Item>,
 4583        cx: &App,
 4584    ) -> bool
 4585    where
 4586        T: ProjectItem,
 4587    {
 4588        self.find_project_item::<T>(pane, project_item, cx)
 4589            .is_some()
 4590    }
 4591
 4592    pub fn open_project_item<T>(
 4593        &mut self,
 4594        pane: Entity<Pane>,
 4595        project_item: Entity<T::Item>,
 4596        activate_pane: bool,
 4597        focus_item: bool,
 4598        keep_old_preview: bool,
 4599        allow_new_preview: bool,
 4600        window: &mut Window,
 4601        cx: &mut Context<Self>,
 4602    ) -> Entity<T>
 4603    where
 4604        T: ProjectItem,
 4605    {
 4606        let old_item_id = pane.read(cx).active_item().map(|item| item.item_id());
 4607
 4608        if let Some(item) = self.find_project_item(&pane, &project_item, cx) {
 4609            if !keep_old_preview
 4610                && let Some(old_id) = old_item_id
 4611                && old_id != item.item_id()
 4612            {
 4613                // switching to a different item, so unpreview old active item
 4614                pane.update(cx, |pane, _| {
 4615                    pane.unpreview_item_if_preview(old_id);
 4616                });
 4617            }
 4618
 4619            self.activate_item(&item, activate_pane, focus_item, window, cx);
 4620            if !allow_new_preview {
 4621                pane.update(cx, |pane, _| {
 4622                    pane.unpreview_item_if_preview(item.item_id());
 4623                });
 4624            }
 4625            return item;
 4626        }
 4627
 4628        let item = pane.update(cx, |pane, cx| {
 4629            cx.new(|cx| {
 4630                T::for_project_item(self.project().clone(), Some(pane), project_item, window, cx)
 4631            })
 4632        });
 4633        let mut destination_index = None;
 4634        pane.update(cx, |pane, cx| {
 4635            if !keep_old_preview && let Some(old_id) = old_item_id {
 4636                pane.unpreview_item_if_preview(old_id);
 4637            }
 4638            if allow_new_preview {
 4639                destination_index = pane.replace_preview_item_id(item.item_id(), window, cx);
 4640            }
 4641        });
 4642
 4643        self.add_item(
 4644            pane,
 4645            Box::new(item.clone()),
 4646            destination_index,
 4647            activate_pane,
 4648            focus_item,
 4649            window,
 4650            cx,
 4651        );
 4652        item
 4653    }
 4654
 4655    pub fn open_shared_screen(
 4656        &mut self,
 4657        peer_id: PeerId,
 4658        window: &mut Window,
 4659        cx: &mut Context<Self>,
 4660    ) {
 4661        if let Some(shared_screen) =
 4662            self.shared_screen_for_peer(peer_id, &self.active_pane, window, cx)
 4663        {
 4664            self.active_pane.update(cx, |pane, cx| {
 4665                pane.add_item(Box::new(shared_screen), false, true, None, window, cx)
 4666            });
 4667        }
 4668    }
 4669
 4670    pub fn activate_item(
 4671        &mut self,
 4672        item: &dyn ItemHandle,
 4673        activate_pane: bool,
 4674        focus_item: bool,
 4675        window: &mut Window,
 4676        cx: &mut App,
 4677    ) -> bool {
 4678        let result = self.panes.iter().find_map(|pane| {
 4679            pane.read(cx)
 4680                .index_for_item(item)
 4681                .map(|ix| (pane.clone(), ix))
 4682        });
 4683        if let Some((pane, ix)) = result {
 4684            pane.update(cx, |pane, cx| {
 4685                pane.activate_item(ix, activate_pane, focus_item, window, cx)
 4686            });
 4687            true
 4688        } else {
 4689            false
 4690        }
 4691    }
 4692
 4693    fn activate_pane_at_index(
 4694        &mut self,
 4695        action: &ActivatePane,
 4696        window: &mut Window,
 4697        cx: &mut Context<Self>,
 4698    ) {
 4699        let panes = self.center.panes();
 4700        if let Some(pane) = panes.get(action.0).map(|p| (*p).clone()) {
 4701            window.focus(&pane.focus_handle(cx), cx);
 4702        } else {
 4703            self.split_and_clone(self.active_pane.clone(), SplitDirection::Right, window, cx)
 4704                .detach();
 4705        }
 4706    }
 4707
 4708    fn move_item_to_pane_at_index(
 4709        &mut self,
 4710        action: &MoveItemToPane,
 4711        window: &mut Window,
 4712        cx: &mut Context<Self>,
 4713    ) {
 4714        let panes = self.center.panes();
 4715        let destination = match panes.get(action.destination) {
 4716            Some(&destination) => destination.clone(),
 4717            None => {
 4718                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 4719                    return;
 4720                }
 4721                let direction = SplitDirection::Right;
 4722                let split_off_pane = self
 4723                    .find_pane_in_direction(direction, cx)
 4724                    .unwrap_or_else(|| self.active_pane.clone());
 4725                let new_pane = self.add_pane(window, cx);
 4726                self.center.split(&split_off_pane, &new_pane, direction, cx);
 4727                new_pane
 4728            }
 4729        };
 4730
 4731        if action.clone {
 4732            if self
 4733                .active_pane
 4734                .read(cx)
 4735                .active_item()
 4736                .is_some_and(|item| item.can_split(cx))
 4737            {
 4738                clone_active_item(
 4739                    self.database_id(),
 4740                    &self.active_pane,
 4741                    &destination,
 4742                    action.focus,
 4743                    window,
 4744                    cx,
 4745                );
 4746                return;
 4747            }
 4748        }
 4749        move_active_item(
 4750            &self.active_pane,
 4751            &destination,
 4752            action.focus,
 4753            true,
 4754            window,
 4755            cx,
 4756        )
 4757    }
 4758
 4759    pub fn activate_next_pane(&mut self, window: &mut Window, cx: &mut App) {
 4760        let panes = self.center.panes();
 4761        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 4762            let next_ix = (ix + 1) % panes.len();
 4763            let next_pane = panes[next_ix].clone();
 4764            window.focus(&next_pane.focus_handle(cx), cx);
 4765        }
 4766    }
 4767
 4768    pub fn activate_previous_pane(&mut self, window: &mut Window, cx: &mut App) {
 4769        let panes = self.center.panes();
 4770        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 4771            let prev_ix = cmp::min(ix.wrapping_sub(1), panes.len() - 1);
 4772            let prev_pane = panes[prev_ix].clone();
 4773            window.focus(&prev_pane.focus_handle(cx), cx);
 4774        }
 4775    }
 4776
 4777    pub fn activate_last_pane(&mut self, window: &mut Window, cx: &mut App) {
 4778        let last_pane = self.center.last_pane();
 4779        window.focus(&last_pane.focus_handle(cx), cx);
 4780    }
 4781
 4782    pub fn activate_pane_in_direction(
 4783        &mut self,
 4784        direction: SplitDirection,
 4785        window: &mut Window,
 4786        cx: &mut App,
 4787    ) {
 4788        use ActivateInDirectionTarget as Target;
 4789        enum Origin {
 4790            Sidebar,
 4791            LeftDock,
 4792            RightDock,
 4793            BottomDock,
 4794            Center,
 4795        }
 4796
 4797        let origin: Origin = if self
 4798            .sidebar_focus_handle
 4799            .as_ref()
 4800            .is_some_and(|h| h.contains_focused(window, cx))
 4801        {
 4802            Origin::Sidebar
 4803        } else {
 4804            [
 4805                (&self.left_dock, Origin::LeftDock),
 4806                (&self.right_dock, Origin::RightDock),
 4807                (&self.bottom_dock, Origin::BottomDock),
 4808            ]
 4809            .into_iter()
 4810            .find_map(|(dock, origin)| {
 4811                if dock.focus_handle(cx).contains_focused(window, cx) && dock.read(cx).is_open() {
 4812                    Some(origin)
 4813                } else {
 4814                    None
 4815                }
 4816            })
 4817            .unwrap_or(Origin::Center)
 4818        };
 4819
 4820        let get_last_active_pane = || {
 4821            let pane = self
 4822                .last_active_center_pane
 4823                .clone()
 4824                .unwrap_or_else(|| {
 4825                    self.panes
 4826                        .first()
 4827                        .expect("There must be an active pane")
 4828                        .downgrade()
 4829                })
 4830                .upgrade()?;
 4831            (pane.read(cx).items_len() != 0).then_some(pane)
 4832        };
 4833
 4834        let try_dock =
 4835            |dock: &Entity<Dock>| dock.read(cx).is_open().then(|| Target::Dock(dock.clone()));
 4836
 4837        let sidebar_target = self
 4838            .sidebar_focus_handle
 4839            .as_ref()
 4840            .map(|h| Target::Sidebar(h.clone()));
 4841
 4842        let sidebar_on_right = self
 4843            .multi_workspace
 4844            .as_ref()
 4845            .and_then(|mw| mw.upgrade())
 4846            .map_or(false, |mw| {
 4847                mw.read(cx).sidebar_side(cx) == SidebarSide::Right
 4848            });
 4849
 4850        let away_from_sidebar = if sidebar_on_right {
 4851            SplitDirection::Left
 4852        } else {
 4853            SplitDirection::Right
 4854        };
 4855
 4856        let (near_dock, far_dock) = if sidebar_on_right {
 4857            (&self.right_dock, &self.left_dock)
 4858        } else {
 4859            (&self.left_dock, &self.right_dock)
 4860        };
 4861
 4862        let target = match (origin, direction) {
 4863            (Origin::Sidebar, dir) if dir == away_from_sidebar => try_dock(near_dock)
 4864                .or_else(|| get_last_active_pane().map(Target::Pane))
 4865                .or_else(|| try_dock(&self.bottom_dock))
 4866                .or_else(|| try_dock(far_dock)),
 4867
 4868            (Origin::Sidebar, _) => None,
 4869
 4870            // We're in the center, so we first try to go to a different pane,
 4871            // otherwise try to go to a dock.
 4872            (Origin::Center, direction) => {
 4873                if let Some(pane) = self.find_pane_in_direction(direction, cx) {
 4874                    Some(Target::Pane(pane))
 4875                } else {
 4876                    match direction {
 4877                        SplitDirection::Up => None,
 4878                        SplitDirection::Down => try_dock(&self.bottom_dock),
 4879                        SplitDirection::Left => {
 4880                            let dock_target = try_dock(&self.left_dock);
 4881                            if sidebar_on_right {
 4882                                dock_target
 4883                            } else {
 4884                                dock_target.or(sidebar_target)
 4885                            }
 4886                        }
 4887                        SplitDirection::Right => {
 4888                            let dock_target = try_dock(&self.right_dock);
 4889                            if sidebar_on_right {
 4890                                dock_target.or(sidebar_target)
 4891                            } else {
 4892                                dock_target
 4893                            }
 4894                        }
 4895                    }
 4896                }
 4897            }
 4898
 4899            (Origin::LeftDock, SplitDirection::Right) => {
 4900                if let Some(last_active_pane) = get_last_active_pane() {
 4901                    Some(Target::Pane(last_active_pane))
 4902                } else {
 4903                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.right_dock))
 4904                }
 4905            }
 4906
 4907            (Origin::LeftDock, SplitDirection::Left) => {
 4908                if sidebar_on_right {
 4909                    None
 4910                } else {
 4911                    sidebar_target
 4912                }
 4913            }
 4914
 4915            (Origin::LeftDock, SplitDirection::Down)
 4916            | (Origin::RightDock, SplitDirection::Down) => try_dock(&self.bottom_dock),
 4917
 4918            (Origin::BottomDock, SplitDirection::Up) => get_last_active_pane().map(Target::Pane),
 4919            (Origin::BottomDock, SplitDirection::Left) => {
 4920                let dock_target = try_dock(&self.left_dock);
 4921                if sidebar_on_right {
 4922                    dock_target
 4923                } else {
 4924                    dock_target.or(sidebar_target)
 4925                }
 4926            }
 4927            (Origin::BottomDock, SplitDirection::Right) => {
 4928                let dock_target = try_dock(&self.right_dock);
 4929                if sidebar_on_right {
 4930                    dock_target.or(sidebar_target)
 4931                } else {
 4932                    dock_target
 4933                }
 4934            }
 4935
 4936            (Origin::RightDock, SplitDirection::Left) => {
 4937                if let Some(last_active_pane) = get_last_active_pane() {
 4938                    Some(Target::Pane(last_active_pane))
 4939                } else {
 4940                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.left_dock))
 4941                }
 4942            }
 4943
 4944            (Origin::RightDock, SplitDirection::Right) => {
 4945                if sidebar_on_right {
 4946                    sidebar_target
 4947                } else {
 4948                    None
 4949                }
 4950            }
 4951
 4952            _ => None,
 4953        };
 4954
 4955        match target {
 4956            Some(ActivateInDirectionTarget::Pane(pane)) => {
 4957                let pane = pane.read(cx);
 4958                if let Some(item) = pane.active_item() {
 4959                    item.item_focus_handle(cx).focus(window, cx);
 4960                } else {
 4961                    log::error!(
 4962                        "Could not find a focus target when in switching focus in {direction} direction for a pane",
 4963                    );
 4964                }
 4965            }
 4966            Some(ActivateInDirectionTarget::Dock(dock)) => {
 4967                // Defer this to avoid a panic when the dock's active panel is already on the stack.
 4968                window.defer(cx, move |window, cx| {
 4969                    let dock = dock.read(cx);
 4970                    if let Some(panel) = dock.active_panel() {
 4971                        panel.panel_focus_handle(cx).focus(window, cx);
 4972                    } else {
 4973                        log::error!("Could not find a focus target when in switching focus in {direction} direction for a {:?} dock", dock.position());
 4974                    }
 4975                })
 4976            }
 4977            Some(ActivateInDirectionTarget::Sidebar(focus_handle)) => {
 4978                focus_handle.focus(window, cx);
 4979            }
 4980            None => {}
 4981        }
 4982    }
 4983
 4984    pub fn move_item_to_pane_in_direction(
 4985        &mut self,
 4986        action: &MoveItemToPaneInDirection,
 4987        window: &mut Window,
 4988        cx: &mut Context<Self>,
 4989    ) {
 4990        let destination = match self.find_pane_in_direction(action.direction, cx) {
 4991            Some(destination) => destination,
 4992            None => {
 4993                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 4994                    return;
 4995                }
 4996                let new_pane = self.add_pane(window, cx);
 4997                self.center
 4998                    .split(&self.active_pane, &new_pane, action.direction, cx);
 4999                new_pane
 5000            }
 5001        };
 5002
 5003        if action.clone {
 5004            if self
 5005                .active_pane
 5006                .read(cx)
 5007                .active_item()
 5008                .is_some_and(|item| item.can_split(cx))
 5009            {
 5010                clone_active_item(
 5011                    self.database_id(),
 5012                    &self.active_pane,
 5013                    &destination,
 5014                    action.focus,
 5015                    window,
 5016                    cx,
 5017                );
 5018                return;
 5019            }
 5020        }
 5021        move_active_item(
 5022            &self.active_pane,
 5023            &destination,
 5024            action.focus,
 5025            true,
 5026            window,
 5027            cx,
 5028        );
 5029    }
 5030
 5031    pub fn bounding_box_for_pane(&self, pane: &Entity<Pane>) -> Option<Bounds<Pixels>> {
 5032        self.center.bounding_box_for_pane(pane)
 5033    }
 5034
 5035    pub fn find_pane_in_direction(
 5036        &mut self,
 5037        direction: SplitDirection,
 5038        cx: &App,
 5039    ) -> Option<Entity<Pane>> {
 5040        self.center
 5041            .find_pane_in_direction(&self.active_pane, direction, cx)
 5042            .cloned()
 5043    }
 5044
 5045    pub fn swap_pane_in_direction(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 5046        if let Some(to) = self.find_pane_in_direction(direction, cx) {
 5047            self.center.swap(&self.active_pane, &to, cx);
 5048            cx.notify();
 5049        }
 5050    }
 5051
 5052    pub fn move_pane_to_border(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 5053        if self
 5054            .center
 5055            .move_to_border(&self.active_pane, direction, cx)
 5056            .unwrap()
 5057        {
 5058            cx.notify();
 5059        }
 5060    }
 5061
 5062    pub fn resize_pane(
 5063        &mut self,
 5064        axis: gpui::Axis,
 5065        amount: Pixels,
 5066        window: &mut Window,
 5067        cx: &mut Context<Self>,
 5068    ) {
 5069        let docks = self.all_docks();
 5070        let active_dock = docks
 5071            .into_iter()
 5072            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 5073
 5074        if let Some(dock_entity) = active_dock {
 5075            let dock = dock_entity.read(cx);
 5076            let Some(panel_size) = self.dock_size(&dock, window, cx) else {
 5077                return;
 5078            };
 5079            match dock.position() {
 5080                DockPosition::Left => self.resize_left_dock(panel_size + amount, window, cx),
 5081                DockPosition::Bottom => self.resize_bottom_dock(panel_size + amount, window, cx),
 5082                DockPosition::Right => self.resize_right_dock(panel_size + amount, window, cx),
 5083            }
 5084        } else {
 5085            self.center
 5086                .resize(&self.active_pane, axis, amount, &self.bounds, cx);
 5087        }
 5088        cx.notify();
 5089    }
 5090
 5091    pub fn reset_pane_sizes(&mut self, cx: &mut Context<Self>) {
 5092        self.center.reset_pane_sizes(cx);
 5093        cx.notify();
 5094    }
 5095
 5096    fn handle_pane_focused(
 5097        &mut self,
 5098        pane: Entity<Pane>,
 5099        window: &mut Window,
 5100        cx: &mut Context<Self>,
 5101    ) {
 5102        // This is explicitly hoisted out of the following check for pane identity as
 5103        // terminal panel panes are not registered as a center panes.
 5104        self.status_bar.update(cx, |status_bar, cx| {
 5105            status_bar.set_active_pane(&pane, window, cx);
 5106        });
 5107        if self.active_pane != pane {
 5108            self.set_active_pane(&pane, window, cx);
 5109        }
 5110
 5111        if self.last_active_center_pane.is_none() {
 5112            self.last_active_center_pane = Some(pane.downgrade());
 5113        }
 5114
 5115        // If this pane is in a dock, preserve that dock when dismissing zoomed items.
 5116        // This prevents the dock from closing when focus events fire during window activation.
 5117        // We also preserve any dock whose active panel itself has focus — this covers
 5118        // panels like AgentPanel that don't implement `pane()` but can still be zoomed.
 5119        let dock_to_preserve = self.all_docks().iter().find_map(|dock| {
 5120            let dock_read = dock.read(cx);
 5121            if let Some(panel) = dock_read.active_panel() {
 5122                if panel.pane(cx).is_some_and(|dock_pane| dock_pane == pane)
 5123                    || panel.panel_focus_handle(cx).contains_focused(window, cx)
 5124                {
 5125                    return Some(dock_read.position());
 5126                }
 5127            }
 5128            None
 5129        });
 5130
 5131        self.dismiss_zoomed_items_to_reveal(dock_to_preserve, window, cx);
 5132        if pane.read(cx).is_zoomed() {
 5133            self.zoomed = Some(pane.downgrade().into());
 5134        } else {
 5135            self.zoomed = None;
 5136        }
 5137        self.zoomed_position = None;
 5138        cx.emit(Event::ZoomChanged);
 5139        self.update_active_view_for_followers(window, cx);
 5140        pane.update(cx, |pane, _| {
 5141            pane.track_alternate_file_items();
 5142        });
 5143
 5144        cx.notify();
 5145    }
 5146
 5147    fn set_active_pane(
 5148        &mut self,
 5149        pane: &Entity<Pane>,
 5150        window: &mut Window,
 5151        cx: &mut Context<Self>,
 5152    ) {
 5153        self.active_pane = pane.clone();
 5154        self.active_item_path_changed(true, window, cx);
 5155        self.last_active_center_pane = Some(pane.downgrade());
 5156    }
 5157
 5158    fn handle_panel_focused(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5159        self.update_active_view_for_followers(window, cx);
 5160    }
 5161
 5162    fn handle_pane_event(
 5163        &mut self,
 5164        pane: &Entity<Pane>,
 5165        event: &pane::Event,
 5166        window: &mut Window,
 5167        cx: &mut Context<Self>,
 5168    ) {
 5169        let mut serialize_workspace = true;
 5170        match event {
 5171            pane::Event::AddItem { item } => {
 5172                item.added_to_pane(self, pane.clone(), window, cx);
 5173                cx.emit(Event::ItemAdded {
 5174                    item: item.boxed_clone(),
 5175                });
 5176            }
 5177            pane::Event::Split { direction, mode } => {
 5178                match mode {
 5179                    SplitMode::ClonePane => {
 5180                        self.split_and_clone(pane.clone(), *direction, window, cx)
 5181                            .detach();
 5182                    }
 5183                    SplitMode::EmptyPane => {
 5184                        self.split_pane(pane.clone(), *direction, window, cx);
 5185                    }
 5186                    SplitMode::MovePane => {
 5187                        self.split_and_move(pane.clone(), *direction, window, cx);
 5188                    }
 5189                };
 5190            }
 5191            pane::Event::JoinIntoNext => {
 5192                self.join_pane_into_next(pane.clone(), window, cx);
 5193            }
 5194            pane::Event::JoinAll => {
 5195                self.join_all_panes(window, cx);
 5196            }
 5197            pane::Event::Remove { focus_on_pane } => {
 5198                self.remove_pane(pane.clone(), focus_on_pane.clone(), window, cx);
 5199            }
 5200            pane::Event::ActivateItem {
 5201                local,
 5202                focus_changed,
 5203            } => {
 5204                window.invalidate_character_coordinates();
 5205
 5206                pane.update(cx, |pane, _| {
 5207                    pane.track_alternate_file_items();
 5208                });
 5209                if *local {
 5210                    self.unfollow_in_pane(pane, window, cx);
 5211                }
 5212                serialize_workspace = *focus_changed || pane != self.active_pane();
 5213                if pane == self.active_pane() {
 5214                    self.active_item_path_changed(*focus_changed, window, cx);
 5215                    self.update_active_view_for_followers(window, cx);
 5216                } else if *local {
 5217                    self.set_active_pane(pane, window, cx);
 5218                }
 5219            }
 5220            pane::Event::UserSavedItem { item, save_intent } => {
 5221                cx.emit(Event::UserSavedItem {
 5222                    pane: pane.downgrade(),
 5223                    item: item.boxed_clone(),
 5224                    save_intent: *save_intent,
 5225                });
 5226                serialize_workspace = false;
 5227            }
 5228            pane::Event::ChangeItemTitle => {
 5229                if *pane == self.active_pane {
 5230                    self.active_item_path_changed(false, window, cx);
 5231                }
 5232                serialize_workspace = false;
 5233            }
 5234            pane::Event::RemovedItem { item } => {
 5235                cx.emit(Event::ActiveItemChanged);
 5236                self.update_window_edited(window, cx);
 5237                if let hash_map::Entry::Occupied(entry) = self.panes_by_item.entry(item.item_id())
 5238                    && entry.get().entity_id() == pane.entity_id()
 5239                {
 5240                    entry.remove();
 5241                }
 5242                cx.emit(Event::ItemRemoved {
 5243                    item_id: item.item_id(),
 5244                });
 5245            }
 5246            pane::Event::Focus => {
 5247                window.invalidate_character_coordinates();
 5248                self.handle_pane_focused(pane.clone(), window, cx);
 5249            }
 5250            pane::Event::ZoomIn => {
 5251                if *pane == self.active_pane {
 5252                    pane.update(cx, |pane, cx| pane.set_zoomed(true, cx));
 5253                    if pane.read(cx).has_focus(window, cx) {
 5254                        self.zoomed = Some(pane.downgrade().into());
 5255                        self.zoomed_position = None;
 5256                        cx.emit(Event::ZoomChanged);
 5257                    }
 5258                    cx.notify();
 5259                }
 5260            }
 5261            pane::Event::ZoomOut => {
 5262                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 5263                if self.zoomed_position.is_none() {
 5264                    self.zoomed = None;
 5265                    cx.emit(Event::ZoomChanged);
 5266                }
 5267                cx.notify();
 5268            }
 5269            pane::Event::ItemPinned | pane::Event::ItemUnpinned => {}
 5270        }
 5271
 5272        if serialize_workspace {
 5273            self.serialize_workspace(window, cx);
 5274        }
 5275    }
 5276
 5277    pub fn unfollow_in_pane(
 5278        &mut self,
 5279        pane: &Entity<Pane>,
 5280        window: &mut Window,
 5281        cx: &mut Context<Workspace>,
 5282    ) -> Option<CollaboratorId> {
 5283        let leader_id = self.leader_for_pane(pane)?;
 5284        self.unfollow(leader_id, window, cx);
 5285        Some(leader_id)
 5286    }
 5287
 5288    pub fn split_pane(
 5289        &mut self,
 5290        pane_to_split: Entity<Pane>,
 5291        split_direction: SplitDirection,
 5292        window: &mut Window,
 5293        cx: &mut Context<Self>,
 5294    ) -> Entity<Pane> {
 5295        let new_pane = self.add_pane(window, cx);
 5296        self.center
 5297            .split(&pane_to_split, &new_pane, split_direction, cx);
 5298        cx.notify();
 5299        new_pane
 5300    }
 5301
 5302    pub fn split_and_move(
 5303        &mut self,
 5304        pane: Entity<Pane>,
 5305        direction: SplitDirection,
 5306        window: &mut Window,
 5307        cx: &mut Context<Self>,
 5308    ) {
 5309        let Some(item) = pane.update(cx, |pane, cx| pane.take_active_item(window, cx)) else {
 5310            return;
 5311        };
 5312        let new_pane = self.add_pane(window, cx);
 5313        new_pane.update(cx, |pane, cx| {
 5314            pane.add_item(item, true, true, None, window, cx)
 5315        });
 5316        self.center.split(&pane, &new_pane, direction, cx);
 5317        cx.notify();
 5318    }
 5319
 5320    pub fn split_and_clone(
 5321        &mut self,
 5322        pane: Entity<Pane>,
 5323        direction: SplitDirection,
 5324        window: &mut Window,
 5325        cx: &mut Context<Self>,
 5326    ) -> Task<Option<Entity<Pane>>> {
 5327        let Some(item) = pane.read(cx).active_item() else {
 5328            return Task::ready(None);
 5329        };
 5330        if !item.can_split(cx) {
 5331            return Task::ready(None);
 5332        }
 5333        let task = item.clone_on_split(self.database_id(), window, cx);
 5334        cx.spawn_in(window, async move |this, cx| {
 5335            if let Some(clone) = task.await {
 5336                this.update_in(cx, |this, window, cx| {
 5337                    let new_pane = this.add_pane(window, cx);
 5338                    let nav_history = pane.read(cx).fork_nav_history();
 5339                    new_pane.update(cx, |pane, cx| {
 5340                        pane.set_nav_history(nav_history, cx);
 5341                        pane.add_item(clone, true, true, None, window, cx)
 5342                    });
 5343                    this.center.split(&pane, &new_pane, direction, cx);
 5344                    cx.notify();
 5345                    new_pane
 5346                })
 5347                .ok()
 5348            } else {
 5349                None
 5350            }
 5351        })
 5352    }
 5353
 5354    pub fn join_all_panes(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5355        let active_item = self.active_pane.read(cx).active_item();
 5356        for pane in &self.panes {
 5357            join_pane_into_active(&self.active_pane, pane, window, cx);
 5358        }
 5359        if let Some(active_item) = active_item {
 5360            self.activate_item(active_item.as_ref(), true, true, window, cx);
 5361        }
 5362        cx.notify();
 5363    }
 5364
 5365    pub fn join_pane_into_next(
 5366        &mut self,
 5367        pane: Entity<Pane>,
 5368        window: &mut Window,
 5369        cx: &mut Context<Self>,
 5370    ) {
 5371        let next_pane = self
 5372            .find_pane_in_direction(SplitDirection::Right, cx)
 5373            .or_else(|| self.find_pane_in_direction(SplitDirection::Down, cx))
 5374            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 5375            .or_else(|| self.find_pane_in_direction(SplitDirection::Up, cx));
 5376        let Some(next_pane) = next_pane else {
 5377            return;
 5378        };
 5379        move_all_items(&pane, &next_pane, window, cx);
 5380        cx.notify();
 5381    }
 5382
 5383    fn remove_pane(
 5384        &mut self,
 5385        pane: Entity<Pane>,
 5386        focus_on: Option<Entity<Pane>>,
 5387        window: &mut Window,
 5388        cx: &mut Context<Self>,
 5389    ) {
 5390        if self.center.remove(&pane, cx).unwrap() {
 5391            self.force_remove_pane(&pane, &focus_on, window, cx);
 5392            self.unfollow_in_pane(&pane, window, cx);
 5393            self.last_leaders_by_pane.remove(&pane.downgrade());
 5394            for removed_item in pane.read(cx).items() {
 5395                self.panes_by_item.remove(&removed_item.item_id());
 5396            }
 5397
 5398            cx.notify();
 5399        } else {
 5400            self.active_item_path_changed(true, window, cx);
 5401        }
 5402        cx.emit(Event::PaneRemoved);
 5403    }
 5404
 5405    pub fn panes_mut(&mut self) -> &mut [Entity<Pane>] {
 5406        &mut self.panes
 5407    }
 5408
 5409    pub fn panes(&self) -> &[Entity<Pane>] {
 5410        &self.panes
 5411    }
 5412
 5413    pub fn active_pane(&self) -> &Entity<Pane> {
 5414        &self.active_pane
 5415    }
 5416
 5417    pub fn focused_pane(&self, window: &Window, cx: &App) -> Entity<Pane> {
 5418        for dock in self.all_docks() {
 5419            if dock.focus_handle(cx).contains_focused(window, cx)
 5420                && let Some(pane) = dock
 5421                    .read(cx)
 5422                    .active_panel()
 5423                    .and_then(|panel| panel.pane(cx))
 5424            {
 5425                return pane;
 5426            }
 5427        }
 5428        self.active_pane().clone()
 5429    }
 5430
 5431    pub fn adjacent_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 5432        self.find_pane_in_direction(SplitDirection::Right, cx)
 5433            .unwrap_or_else(|| {
 5434                self.split_pane(self.active_pane.clone(), SplitDirection::Right, window, cx)
 5435            })
 5436    }
 5437
 5438    pub fn pane_for(&self, handle: &dyn ItemHandle) -> Option<Entity<Pane>> {
 5439        self.pane_for_item_id(handle.item_id())
 5440    }
 5441
 5442    pub fn pane_for_item_id(&self, item_id: EntityId) -> Option<Entity<Pane>> {
 5443        let weak_pane = self.panes_by_item.get(&item_id)?;
 5444        weak_pane.upgrade()
 5445    }
 5446
 5447    pub fn pane_for_entity_id(&self, entity_id: EntityId) -> Option<Entity<Pane>> {
 5448        self.panes
 5449            .iter()
 5450            .find(|pane| pane.entity_id() == entity_id)
 5451            .cloned()
 5452    }
 5453
 5454    fn collaborator_left(&mut self, peer_id: PeerId, window: &mut Window, cx: &mut Context<Self>) {
 5455        self.follower_states.retain(|leader_id, state| {
 5456            if *leader_id == CollaboratorId::PeerId(peer_id) {
 5457                for item in state.items_by_leader_view_id.values() {
 5458                    item.view.set_leader_id(None, window, cx);
 5459                }
 5460                false
 5461            } else {
 5462                true
 5463            }
 5464        });
 5465        cx.notify();
 5466    }
 5467
 5468    pub fn start_following(
 5469        &mut self,
 5470        leader_id: impl Into<CollaboratorId>,
 5471        window: &mut Window,
 5472        cx: &mut Context<Self>,
 5473    ) -> Option<Task<Result<()>>> {
 5474        let leader_id = leader_id.into();
 5475        let pane = self.active_pane().clone();
 5476
 5477        self.last_leaders_by_pane
 5478            .insert(pane.downgrade(), leader_id);
 5479        self.unfollow(leader_id, window, cx);
 5480        self.unfollow_in_pane(&pane, window, cx);
 5481        self.follower_states.insert(
 5482            leader_id,
 5483            FollowerState {
 5484                center_pane: pane.clone(),
 5485                dock_pane: None,
 5486                active_view_id: None,
 5487                items_by_leader_view_id: Default::default(),
 5488            },
 5489        );
 5490        cx.notify();
 5491
 5492        match leader_id {
 5493            CollaboratorId::PeerId(leader_peer_id) => {
 5494                let room_id = self.active_call()?.room_id(cx)?;
 5495                let project_id = self.project.read(cx).remote_id();
 5496                let request = self.app_state.client.request(proto::Follow {
 5497                    room_id,
 5498                    project_id,
 5499                    leader_id: Some(leader_peer_id),
 5500                });
 5501
 5502                Some(cx.spawn_in(window, async move |this, cx| {
 5503                    let response = request.await?;
 5504                    this.update(cx, |this, _| {
 5505                        let state = this
 5506                            .follower_states
 5507                            .get_mut(&leader_id)
 5508                            .context("following interrupted")?;
 5509                        state.active_view_id = response
 5510                            .active_view
 5511                            .as_ref()
 5512                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 5513                        anyhow::Ok(())
 5514                    })??;
 5515                    if let Some(view) = response.active_view {
 5516                        Self::add_view_from_leader(this.clone(), leader_peer_id, &view, cx).await?;
 5517                    }
 5518                    this.update_in(cx, |this, window, cx| {
 5519                        this.leader_updated(leader_id, window, cx)
 5520                    })?;
 5521                    Ok(())
 5522                }))
 5523            }
 5524            CollaboratorId::Agent => {
 5525                self.leader_updated(leader_id, window, cx)?;
 5526                Some(Task::ready(Ok(())))
 5527            }
 5528        }
 5529    }
 5530
 5531    pub fn follow_next_collaborator(
 5532        &mut self,
 5533        _: &FollowNextCollaborator,
 5534        window: &mut Window,
 5535        cx: &mut Context<Self>,
 5536    ) {
 5537        let collaborators = self.project.read(cx).collaborators();
 5538        let next_leader_id = if let Some(leader_id) = self.leader_for_pane(&self.active_pane) {
 5539            let mut collaborators = collaborators.keys().copied();
 5540            for peer_id in collaborators.by_ref() {
 5541                if CollaboratorId::PeerId(peer_id) == leader_id {
 5542                    break;
 5543                }
 5544            }
 5545            collaborators.next().map(CollaboratorId::PeerId)
 5546        } else if let Some(last_leader_id) =
 5547            self.last_leaders_by_pane.get(&self.active_pane.downgrade())
 5548        {
 5549            match last_leader_id {
 5550                CollaboratorId::PeerId(peer_id) => {
 5551                    if collaborators.contains_key(peer_id) {
 5552                        Some(*last_leader_id)
 5553                    } else {
 5554                        None
 5555                    }
 5556                }
 5557                CollaboratorId::Agent => Some(CollaboratorId::Agent),
 5558            }
 5559        } else {
 5560            None
 5561        };
 5562
 5563        let pane = self.active_pane.clone();
 5564        let Some(leader_id) = next_leader_id.or_else(|| {
 5565            Some(CollaboratorId::PeerId(
 5566                collaborators.keys().copied().next()?,
 5567            ))
 5568        }) else {
 5569            return;
 5570        };
 5571        if self.unfollow_in_pane(&pane, window, cx) == Some(leader_id) {
 5572            return;
 5573        }
 5574        if let Some(task) = self.start_following(leader_id, window, cx) {
 5575            task.detach_and_log_err(cx)
 5576        }
 5577    }
 5578
 5579    pub fn follow(
 5580        &mut self,
 5581        leader_id: impl Into<CollaboratorId>,
 5582        window: &mut Window,
 5583        cx: &mut Context<Self>,
 5584    ) {
 5585        let leader_id = leader_id.into();
 5586
 5587        if let CollaboratorId::PeerId(peer_id) = leader_id {
 5588            let Some(active_call) = GlobalAnyActiveCall::try_global(cx) else {
 5589                return;
 5590            };
 5591            let Some(remote_participant) =
 5592                active_call.0.remote_participant_for_peer_id(peer_id, cx)
 5593            else {
 5594                return;
 5595            };
 5596
 5597            let project = self.project.read(cx);
 5598
 5599            let other_project_id = match remote_participant.location {
 5600                ParticipantLocation::External => None,
 5601                ParticipantLocation::UnsharedProject => None,
 5602                ParticipantLocation::SharedProject { project_id } => {
 5603                    if Some(project_id) == project.remote_id() {
 5604                        None
 5605                    } else {
 5606                        Some(project_id)
 5607                    }
 5608                }
 5609            };
 5610
 5611            // if they are active in another project, follow there.
 5612            if let Some(project_id) = other_project_id {
 5613                let app_state = self.app_state.clone();
 5614                crate::join_in_room_project(project_id, remote_participant.user.id, app_state, cx)
 5615                    .detach_and_prompt_err("Failed to join project", window, cx, |error, _, _| {
 5616                        Some(format!("{error:#}"))
 5617                    });
 5618            }
 5619        }
 5620
 5621        // if you're already following, find the right pane and focus it.
 5622        if let Some(follower_state) = self.follower_states.get(&leader_id) {
 5623            window.focus(&follower_state.pane().focus_handle(cx), cx);
 5624
 5625            return;
 5626        }
 5627
 5628        // Otherwise, follow.
 5629        if let Some(task) = self.start_following(leader_id, window, cx) {
 5630            task.detach_and_log_err(cx)
 5631        }
 5632    }
 5633
 5634    pub fn unfollow(
 5635        &mut self,
 5636        leader_id: impl Into<CollaboratorId>,
 5637        window: &mut Window,
 5638        cx: &mut Context<Self>,
 5639    ) -> Option<()> {
 5640        cx.notify();
 5641
 5642        let leader_id = leader_id.into();
 5643        let state = self.follower_states.remove(&leader_id)?;
 5644        for (_, item) in state.items_by_leader_view_id {
 5645            item.view.set_leader_id(None, window, cx);
 5646        }
 5647
 5648        if let CollaboratorId::PeerId(leader_peer_id) = leader_id {
 5649            let project_id = self.project.read(cx).remote_id();
 5650            let room_id = self.active_call()?.room_id(cx)?;
 5651            self.app_state
 5652                .client
 5653                .send(proto::Unfollow {
 5654                    room_id,
 5655                    project_id,
 5656                    leader_id: Some(leader_peer_id),
 5657                })
 5658                .log_err();
 5659        }
 5660
 5661        Some(())
 5662    }
 5663
 5664    pub fn is_being_followed(&self, id: impl Into<CollaboratorId>) -> bool {
 5665        self.follower_states.contains_key(&id.into())
 5666    }
 5667
 5668    fn active_item_path_changed(
 5669        &mut self,
 5670        focus_changed: bool,
 5671        window: &mut Window,
 5672        cx: &mut Context<Self>,
 5673    ) {
 5674        cx.emit(Event::ActiveItemChanged);
 5675        let active_entry = self.active_project_path(cx);
 5676        self.project.update(cx, |project, cx| {
 5677            project.set_active_path(active_entry.clone(), cx)
 5678        });
 5679
 5680        if focus_changed && let Some(project_path) = &active_entry {
 5681            let git_store_entity = self.project.read(cx).git_store().clone();
 5682            git_store_entity.update(cx, |git_store, cx| {
 5683                git_store.set_active_repo_for_path(project_path, cx);
 5684            });
 5685        }
 5686
 5687        self.update_window_title(window, cx);
 5688    }
 5689
 5690    fn update_window_title(&mut self, window: &mut Window, cx: &mut App) {
 5691        let project = self.project().read(cx);
 5692        let mut title = String::new();
 5693
 5694        for (i, worktree) in project.visible_worktrees(cx).enumerate() {
 5695            let name = {
 5696                let settings_location = SettingsLocation {
 5697                    worktree_id: worktree.read(cx).id(),
 5698                    path: RelPath::empty(),
 5699                };
 5700
 5701                let settings = WorktreeSettings::get(Some(settings_location), cx);
 5702                match &settings.project_name {
 5703                    Some(name) => name.as_str(),
 5704                    None => worktree.read(cx).root_name_str(),
 5705                }
 5706            };
 5707            if i > 0 {
 5708                title.push_str(", ");
 5709            }
 5710            title.push_str(name);
 5711        }
 5712
 5713        if title.is_empty() {
 5714            title = "empty project".to_string();
 5715        }
 5716
 5717        if let Some(path) = self.active_item(cx).and_then(|item| item.project_path(cx)) {
 5718            let filename = path.path.file_name().or_else(|| {
 5719                Some(
 5720                    project
 5721                        .worktree_for_id(path.worktree_id, cx)?
 5722                        .read(cx)
 5723                        .root_name_str(),
 5724                )
 5725            });
 5726
 5727            if let Some(filename) = filename {
 5728                title.push_str("");
 5729                title.push_str(filename.as_ref());
 5730            }
 5731        }
 5732
 5733        if project.is_via_collab() {
 5734            title.push_str("");
 5735        } else if project.is_shared() {
 5736            title.push_str("");
 5737        }
 5738
 5739        if let Some(last_title) = self.last_window_title.as_ref()
 5740            && &title == last_title
 5741        {
 5742            return;
 5743        }
 5744        window.set_window_title(&title);
 5745        SystemWindowTabController::update_tab_title(
 5746            cx,
 5747            window.window_handle().window_id(),
 5748            SharedString::from(&title),
 5749        );
 5750        self.last_window_title = Some(title);
 5751    }
 5752
 5753    fn update_window_edited(&mut self, window: &mut Window, cx: &mut App) {
 5754        let is_edited = !self.project.read(cx).is_disconnected(cx) && !self.dirty_items.is_empty();
 5755        if is_edited != self.window_edited {
 5756            self.window_edited = is_edited;
 5757            window.set_window_edited(self.window_edited)
 5758        }
 5759    }
 5760
 5761    fn update_item_dirty_state(
 5762        &mut self,
 5763        item: &dyn ItemHandle,
 5764        window: &mut Window,
 5765        cx: &mut App,
 5766    ) {
 5767        let is_dirty = item.is_dirty(cx);
 5768        let item_id = item.item_id();
 5769        let was_dirty = self.dirty_items.contains_key(&item_id);
 5770        if is_dirty == was_dirty {
 5771            return;
 5772        }
 5773        if was_dirty {
 5774            self.dirty_items.remove(&item_id);
 5775            self.update_window_edited(window, cx);
 5776            return;
 5777        }
 5778
 5779        let workspace = self.weak_handle();
 5780        let Some(window_handle) = window.window_handle().downcast::<MultiWorkspace>() else {
 5781            return;
 5782        };
 5783        let on_release_callback = Box::new(move |cx: &mut App| {
 5784            window_handle
 5785                .update(cx, |_, window, cx| {
 5786                    workspace
 5787                        .update(cx, |workspace, cx| {
 5788                            workspace.dirty_items.remove(&item_id);
 5789                            workspace.update_window_edited(window, cx)
 5790                        })
 5791                        .ok();
 5792                })
 5793                .ok();
 5794        });
 5795
 5796        let s = item.on_release(cx, on_release_callback);
 5797        self.dirty_items.insert(item_id, s);
 5798        self.update_window_edited(window, cx);
 5799    }
 5800
 5801    fn render_notifications(&self, _window: &mut Window, _cx: &mut Context<Self>) -> Option<Div> {
 5802        if self.notifications.is_empty() {
 5803            None
 5804        } else {
 5805            Some(
 5806                div()
 5807                    .absolute()
 5808                    .right_3()
 5809                    .bottom_3()
 5810                    .w_112()
 5811                    .h_full()
 5812                    .flex()
 5813                    .flex_col()
 5814                    .justify_end()
 5815                    .gap_2()
 5816                    .children(
 5817                        self.notifications
 5818                            .iter()
 5819                            .map(|(_, notification)| notification.clone().into_any()),
 5820                    ),
 5821            )
 5822        }
 5823    }
 5824
 5825    // RPC handlers
 5826
 5827    fn active_view_for_follower(
 5828        &self,
 5829        follower_project_id: Option<u64>,
 5830        window: &mut Window,
 5831        cx: &mut Context<Self>,
 5832    ) -> Option<proto::View> {
 5833        let (item, panel_id) = self.active_item_for_followers(window, cx);
 5834        let item = item?;
 5835        let leader_id = self
 5836            .pane_for(&*item)
 5837            .and_then(|pane| self.leader_for_pane(&pane));
 5838        let leader_peer_id = match leader_id {
 5839            Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 5840            Some(CollaboratorId::Agent) | None => None,
 5841        };
 5842
 5843        let item_handle = item.to_followable_item_handle(cx)?;
 5844        let id = item_handle.remote_id(&self.app_state.client, window, cx)?;
 5845        let variant = item_handle.to_state_proto(window, cx)?;
 5846
 5847        if item_handle.is_project_item(window, cx)
 5848            && (follower_project_id.is_none()
 5849                || follower_project_id != self.project.read(cx).remote_id())
 5850        {
 5851            return None;
 5852        }
 5853
 5854        Some(proto::View {
 5855            id: id.to_proto(),
 5856            leader_id: leader_peer_id,
 5857            variant: Some(variant),
 5858            panel_id: panel_id.map(|id| id as i32),
 5859        })
 5860    }
 5861
 5862    fn handle_follow(
 5863        &mut self,
 5864        follower_project_id: Option<u64>,
 5865        window: &mut Window,
 5866        cx: &mut Context<Self>,
 5867    ) -> proto::FollowResponse {
 5868        let active_view = self.active_view_for_follower(follower_project_id, window, cx);
 5869
 5870        cx.notify();
 5871        proto::FollowResponse {
 5872            views: active_view.iter().cloned().collect(),
 5873            active_view,
 5874        }
 5875    }
 5876
 5877    fn handle_update_followers(
 5878        &mut self,
 5879        leader_id: PeerId,
 5880        message: proto::UpdateFollowers,
 5881        _window: &mut Window,
 5882        _cx: &mut Context<Self>,
 5883    ) {
 5884        self.leader_updates_tx
 5885            .unbounded_send((leader_id, message))
 5886            .ok();
 5887    }
 5888
 5889    async fn process_leader_update(
 5890        this: &WeakEntity<Self>,
 5891        leader_id: PeerId,
 5892        update: proto::UpdateFollowers,
 5893        cx: &mut AsyncWindowContext,
 5894    ) -> Result<()> {
 5895        match update.variant.context("invalid update")? {
 5896            proto::update_followers::Variant::CreateView(view) => {
 5897                let view_id = ViewId::from_proto(view.id.clone().context("invalid view id")?)?;
 5898                let should_add_view = this.update(cx, |this, _| {
 5899                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 5900                        anyhow::Ok(!state.items_by_leader_view_id.contains_key(&view_id))
 5901                    } else {
 5902                        anyhow::Ok(false)
 5903                    }
 5904                })??;
 5905
 5906                if should_add_view {
 5907                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 5908                }
 5909            }
 5910            proto::update_followers::Variant::UpdateActiveView(update_active_view) => {
 5911                let should_add_view = this.update(cx, |this, _| {
 5912                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 5913                        state.active_view_id = update_active_view
 5914                            .view
 5915                            .as_ref()
 5916                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 5917
 5918                        if state.active_view_id.is_some_and(|view_id| {
 5919                            !state.items_by_leader_view_id.contains_key(&view_id)
 5920                        }) {
 5921                            anyhow::Ok(true)
 5922                        } else {
 5923                            anyhow::Ok(false)
 5924                        }
 5925                    } else {
 5926                        anyhow::Ok(false)
 5927                    }
 5928                })??;
 5929
 5930                if should_add_view && let Some(view) = update_active_view.view {
 5931                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 5932                }
 5933            }
 5934            proto::update_followers::Variant::UpdateView(update_view) => {
 5935                let variant = update_view.variant.context("missing update view variant")?;
 5936                let id = update_view.id.context("missing update view id")?;
 5937                let mut tasks = Vec::new();
 5938                this.update_in(cx, |this, window, cx| {
 5939                    let project = this.project.clone();
 5940                    if let Some(state) = this.follower_states.get(&leader_id.into()) {
 5941                        let view_id = ViewId::from_proto(id.clone())?;
 5942                        if let Some(item) = state.items_by_leader_view_id.get(&view_id) {
 5943                            tasks.push(item.view.apply_update_proto(
 5944                                &project,
 5945                                variant.clone(),
 5946                                window,
 5947                                cx,
 5948                            ));
 5949                        }
 5950                    }
 5951                    anyhow::Ok(())
 5952                })??;
 5953                try_join_all(tasks).await.log_err();
 5954            }
 5955        }
 5956        this.update_in(cx, |this, window, cx| {
 5957            this.leader_updated(leader_id, window, cx)
 5958        })?;
 5959        Ok(())
 5960    }
 5961
 5962    async fn add_view_from_leader(
 5963        this: WeakEntity<Self>,
 5964        leader_id: PeerId,
 5965        view: &proto::View,
 5966        cx: &mut AsyncWindowContext,
 5967    ) -> Result<()> {
 5968        let this = this.upgrade().context("workspace dropped")?;
 5969
 5970        let Some(id) = view.id.clone() else {
 5971            anyhow::bail!("no id for view");
 5972        };
 5973        let id = ViewId::from_proto(id)?;
 5974        let panel_id = view.panel_id.and_then(proto::PanelId::from_i32);
 5975
 5976        let pane = this.update(cx, |this, _cx| {
 5977            let state = this
 5978                .follower_states
 5979                .get(&leader_id.into())
 5980                .context("stopped following")?;
 5981            anyhow::Ok(state.pane().clone())
 5982        })?;
 5983        let existing_item = pane.update_in(cx, |pane, window, cx| {
 5984            let client = this.read(cx).client().clone();
 5985            pane.items().find_map(|item| {
 5986                let item = item.to_followable_item_handle(cx)?;
 5987                if item.remote_id(&client, window, cx) == Some(id) {
 5988                    Some(item)
 5989                } else {
 5990                    None
 5991                }
 5992            })
 5993        })?;
 5994        let item = if let Some(existing_item) = existing_item {
 5995            existing_item
 5996        } else {
 5997            let variant = view.variant.clone();
 5998            anyhow::ensure!(variant.is_some(), "missing view variant");
 5999
 6000            let task = cx.update(|window, cx| {
 6001                FollowableViewRegistry::from_state_proto(this.clone(), id, variant, window, cx)
 6002            })?;
 6003
 6004            let Some(task) = task else {
 6005                anyhow::bail!(
 6006                    "failed to construct view from leader (maybe from a different version of zed?)"
 6007                );
 6008            };
 6009
 6010            let mut new_item = task.await?;
 6011            pane.update_in(cx, |pane, window, cx| {
 6012                let mut item_to_remove = None;
 6013                for (ix, item) in pane.items().enumerate() {
 6014                    if let Some(item) = item.to_followable_item_handle(cx) {
 6015                        match new_item.dedup(item.as_ref(), window, cx) {
 6016                            Some(item::Dedup::KeepExisting) => {
 6017                                new_item =
 6018                                    item.boxed_clone().to_followable_item_handle(cx).unwrap();
 6019                                break;
 6020                            }
 6021                            Some(item::Dedup::ReplaceExisting) => {
 6022                                item_to_remove = Some((ix, item.item_id()));
 6023                                break;
 6024                            }
 6025                            None => {}
 6026                        }
 6027                    }
 6028                }
 6029
 6030                if let Some((ix, id)) = item_to_remove {
 6031                    pane.remove_item(id, false, false, window, cx);
 6032                    pane.add_item(new_item.boxed_clone(), false, false, Some(ix), window, cx);
 6033                }
 6034            })?;
 6035
 6036            new_item
 6037        };
 6038
 6039        this.update_in(cx, |this, window, cx| {
 6040            let state = this.follower_states.get_mut(&leader_id.into())?;
 6041            item.set_leader_id(Some(leader_id.into()), window, cx);
 6042            state.items_by_leader_view_id.insert(
 6043                id,
 6044                FollowerView {
 6045                    view: item,
 6046                    location: panel_id,
 6047                },
 6048            );
 6049
 6050            Some(())
 6051        })
 6052        .context("no follower state")?;
 6053
 6054        Ok(())
 6055    }
 6056
 6057    fn handle_agent_location_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 6058        let Some(follower_state) = self.follower_states.get_mut(&CollaboratorId::Agent) else {
 6059            return;
 6060        };
 6061
 6062        if let Some(agent_location) = self.project.read(cx).agent_location() {
 6063            let buffer_entity_id = agent_location.buffer.entity_id();
 6064            let view_id = ViewId {
 6065                creator: CollaboratorId::Agent,
 6066                id: buffer_entity_id.as_u64(),
 6067            };
 6068            follower_state.active_view_id = Some(view_id);
 6069
 6070            let item = match follower_state.items_by_leader_view_id.entry(view_id) {
 6071                hash_map::Entry::Occupied(entry) => Some(entry.into_mut()),
 6072                hash_map::Entry::Vacant(entry) => {
 6073                    let existing_view =
 6074                        follower_state
 6075                            .center_pane
 6076                            .read(cx)
 6077                            .items()
 6078                            .find_map(|item| {
 6079                                let item = item.to_followable_item_handle(cx)?;
 6080                                if item.buffer_kind(cx) == ItemBufferKind::Singleton
 6081                                    && item.project_item_model_ids(cx).as_slice()
 6082                                        == [buffer_entity_id]
 6083                                {
 6084                                    Some(item)
 6085                                } else {
 6086                                    None
 6087                                }
 6088                            });
 6089                    let view = existing_view.or_else(|| {
 6090                        agent_location.buffer.upgrade().and_then(|buffer| {
 6091                            cx.update_default_global(|registry: &mut ProjectItemRegistry, cx| {
 6092                                registry.build_item(buffer, self.project.clone(), None, window, cx)
 6093                            })?
 6094                            .to_followable_item_handle(cx)
 6095                        })
 6096                    });
 6097
 6098                    view.map(|view| {
 6099                        entry.insert(FollowerView {
 6100                            view,
 6101                            location: None,
 6102                        })
 6103                    })
 6104                }
 6105            };
 6106
 6107            if let Some(item) = item {
 6108                item.view
 6109                    .set_leader_id(Some(CollaboratorId::Agent), window, cx);
 6110                item.view
 6111                    .update_agent_location(agent_location.position, window, cx);
 6112            }
 6113        } else {
 6114            follower_state.active_view_id = None;
 6115        }
 6116
 6117        self.leader_updated(CollaboratorId::Agent, window, cx);
 6118    }
 6119
 6120    pub fn update_active_view_for_followers(&mut self, window: &mut Window, cx: &mut App) {
 6121        let mut is_project_item = true;
 6122        let mut update = proto::UpdateActiveView::default();
 6123        if window.is_window_active() {
 6124            let (active_item, panel_id) = self.active_item_for_followers(window, cx);
 6125
 6126            if let Some(item) = active_item
 6127                && item.item_focus_handle(cx).contains_focused(window, cx)
 6128            {
 6129                let leader_id = self
 6130                    .pane_for(&*item)
 6131                    .and_then(|pane| self.leader_for_pane(&pane));
 6132                let leader_peer_id = match leader_id {
 6133                    Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 6134                    Some(CollaboratorId::Agent) | None => None,
 6135                };
 6136
 6137                if let Some(item) = item.to_followable_item_handle(cx) {
 6138                    let id = item
 6139                        .remote_id(&self.app_state.client, window, cx)
 6140                        .map(|id| id.to_proto());
 6141
 6142                    if let Some(id) = id
 6143                        && let Some(variant) = item.to_state_proto(window, cx)
 6144                    {
 6145                        let view = Some(proto::View {
 6146                            id,
 6147                            leader_id: leader_peer_id,
 6148                            variant: Some(variant),
 6149                            panel_id: panel_id.map(|id| id as i32),
 6150                        });
 6151
 6152                        is_project_item = item.is_project_item(window, cx);
 6153                        update = proto::UpdateActiveView { view };
 6154                    };
 6155                }
 6156            }
 6157        }
 6158
 6159        let active_view_id = update.view.as_ref().and_then(|view| view.id.as_ref());
 6160        if active_view_id != self.last_active_view_id.as_ref() {
 6161            self.last_active_view_id = active_view_id.cloned();
 6162            self.update_followers(
 6163                is_project_item,
 6164                proto::update_followers::Variant::UpdateActiveView(update),
 6165                window,
 6166                cx,
 6167            );
 6168        }
 6169    }
 6170
 6171    fn active_item_for_followers(
 6172        &self,
 6173        window: &mut Window,
 6174        cx: &mut App,
 6175    ) -> (Option<Box<dyn ItemHandle>>, Option<proto::PanelId>) {
 6176        let mut active_item = None;
 6177        let mut panel_id = None;
 6178        for dock in self.all_docks() {
 6179            if dock.focus_handle(cx).contains_focused(window, cx)
 6180                && let Some(panel) = dock.read(cx).active_panel()
 6181                && let Some(pane) = panel.pane(cx)
 6182                && let Some(item) = pane.read(cx).active_item()
 6183            {
 6184                active_item = Some(item);
 6185                panel_id = panel.remote_id();
 6186                break;
 6187            }
 6188        }
 6189
 6190        if active_item.is_none() {
 6191            active_item = self.active_pane().read(cx).active_item();
 6192        }
 6193        (active_item, panel_id)
 6194    }
 6195
 6196    fn update_followers(
 6197        &self,
 6198        project_only: bool,
 6199        update: proto::update_followers::Variant,
 6200        _: &mut Window,
 6201        cx: &mut App,
 6202    ) -> Option<()> {
 6203        // If this update only applies to for followers in the current project,
 6204        // then skip it unless this project is shared. If it applies to all
 6205        // followers, regardless of project, then set `project_id` to none,
 6206        // indicating that it goes to all followers.
 6207        let project_id = if project_only {
 6208            Some(self.project.read(cx).remote_id()?)
 6209        } else {
 6210            None
 6211        };
 6212        self.app_state().workspace_store.update(cx, |store, cx| {
 6213            store.update_followers(project_id, update, cx)
 6214        })
 6215    }
 6216
 6217    pub fn leader_for_pane(&self, pane: &Entity<Pane>) -> Option<CollaboratorId> {
 6218        self.follower_states.iter().find_map(|(leader_id, state)| {
 6219            if state.center_pane == *pane || state.dock_pane.as_ref() == Some(pane) {
 6220                Some(*leader_id)
 6221            } else {
 6222                None
 6223            }
 6224        })
 6225    }
 6226
 6227    fn leader_updated(
 6228        &mut self,
 6229        leader_id: impl Into<CollaboratorId>,
 6230        window: &mut Window,
 6231        cx: &mut Context<Self>,
 6232    ) -> Option<Box<dyn ItemHandle>> {
 6233        cx.notify();
 6234
 6235        let leader_id = leader_id.into();
 6236        let (panel_id, item) = match leader_id {
 6237            CollaboratorId::PeerId(peer_id) => self.active_item_for_peer(peer_id, window, cx)?,
 6238            CollaboratorId::Agent => (None, self.active_item_for_agent()?),
 6239        };
 6240
 6241        let state = self.follower_states.get(&leader_id)?;
 6242        let mut transfer_focus = state.center_pane.read(cx).has_focus(window, cx);
 6243        let pane;
 6244        if let Some(panel_id) = panel_id {
 6245            pane = self
 6246                .activate_panel_for_proto_id(panel_id, window, cx)?
 6247                .pane(cx)?;
 6248            let state = self.follower_states.get_mut(&leader_id)?;
 6249            state.dock_pane = Some(pane.clone());
 6250        } else {
 6251            pane = state.center_pane.clone();
 6252            let state = self.follower_states.get_mut(&leader_id)?;
 6253            if let Some(dock_pane) = state.dock_pane.take() {
 6254                transfer_focus |= dock_pane.focus_handle(cx).contains_focused(window, cx);
 6255            }
 6256        }
 6257
 6258        pane.update(cx, |pane, cx| {
 6259            let focus_active_item = pane.has_focus(window, cx) || transfer_focus;
 6260            if let Some(index) = pane.index_for_item(item.as_ref()) {
 6261                pane.activate_item(index, false, false, window, cx);
 6262            } else {
 6263                pane.add_item(item.boxed_clone(), false, false, None, window, cx)
 6264            }
 6265
 6266            if focus_active_item {
 6267                pane.focus_active_item(window, cx)
 6268            }
 6269        });
 6270
 6271        Some(item)
 6272    }
 6273
 6274    fn active_item_for_agent(&self) -> Option<Box<dyn ItemHandle>> {
 6275        let state = self.follower_states.get(&CollaboratorId::Agent)?;
 6276        let active_view_id = state.active_view_id?;
 6277        Some(
 6278            state
 6279                .items_by_leader_view_id
 6280                .get(&active_view_id)?
 6281                .view
 6282                .boxed_clone(),
 6283        )
 6284    }
 6285
 6286    fn active_item_for_peer(
 6287        &self,
 6288        peer_id: PeerId,
 6289        window: &mut Window,
 6290        cx: &mut Context<Self>,
 6291    ) -> Option<(Option<PanelId>, Box<dyn ItemHandle>)> {
 6292        let call = self.active_call()?;
 6293        let participant = call.remote_participant_for_peer_id(peer_id, cx)?;
 6294        let leader_in_this_app;
 6295        let leader_in_this_project;
 6296        match participant.location {
 6297            ParticipantLocation::SharedProject { project_id } => {
 6298                leader_in_this_app = true;
 6299                leader_in_this_project = Some(project_id) == self.project.read(cx).remote_id();
 6300            }
 6301            ParticipantLocation::UnsharedProject => {
 6302                leader_in_this_app = true;
 6303                leader_in_this_project = false;
 6304            }
 6305            ParticipantLocation::External => {
 6306                leader_in_this_app = false;
 6307                leader_in_this_project = false;
 6308            }
 6309        };
 6310        let state = self.follower_states.get(&peer_id.into())?;
 6311        let mut item_to_activate = None;
 6312        if let (Some(active_view_id), true) = (state.active_view_id, leader_in_this_app) {
 6313            if let Some(item) = state.items_by_leader_view_id.get(&active_view_id)
 6314                && (leader_in_this_project || !item.view.is_project_item(window, cx))
 6315            {
 6316                item_to_activate = Some((item.location, item.view.boxed_clone()));
 6317            }
 6318        } else if let Some(shared_screen) =
 6319            self.shared_screen_for_peer(peer_id, &state.center_pane, window, cx)
 6320        {
 6321            item_to_activate = Some((None, Box::new(shared_screen)));
 6322        }
 6323        item_to_activate
 6324    }
 6325
 6326    fn shared_screen_for_peer(
 6327        &self,
 6328        peer_id: PeerId,
 6329        pane: &Entity<Pane>,
 6330        window: &mut Window,
 6331        cx: &mut App,
 6332    ) -> Option<Entity<SharedScreen>> {
 6333        self.active_call()?
 6334            .create_shared_screen(peer_id, pane, window, cx)
 6335    }
 6336
 6337    pub fn on_window_activation_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 6338        if window.is_window_active() {
 6339            self.update_active_view_for_followers(window, cx);
 6340
 6341            if let Some(database_id) = self.database_id {
 6342                let db = WorkspaceDb::global(cx);
 6343                cx.background_spawn(async move { db.update_timestamp(database_id).await })
 6344                    .detach();
 6345            }
 6346        } else {
 6347            for pane in &self.panes {
 6348                pane.update(cx, |pane, cx| {
 6349                    if let Some(item) = pane.active_item() {
 6350                        item.workspace_deactivated(window, cx);
 6351                    }
 6352                    for item in pane.items() {
 6353                        if matches!(
 6354                            item.workspace_settings(cx).autosave,
 6355                            AutosaveSetting::OnWindowChange | AutosaveSetting::OnFocusChange
 6356                        ) {
 6357                            Pane::autosave_item(item.as_ref(), self.project.clone(), window, cx)
 6358                                .detach_and_log_err(cx);
 6359                        }
 6360                    }
 6361                });
 6362            }
 6363        }
 6364    }
 6365
 6366    pub fn active_call(&self) -> Option<&dyn AnyActiveCall> {
 6367        self.active_call.as_ref().map(|(call, _)| &*call.0)
 6368    }
 6369
 6370    pub fn active_global_call(&self) -> Option<GlobalAnyActiveCall> {
 6371        self.active_call.as_ref().map(|(call, _)| call.clone())
 6372    }
 6373
 6374    fn on_active_call_event(
 6375        &mut self,
 6376        event: &ActiveCallEvent,
 6377        window: &mut Window,
 6378        cx: &mut Context<Self>,
 6379    ) {
 6380        match event {
 6381            ActiveCallEvent::ParticipantLocationChanged { participant_id }
 6382            | ActiveCallEvent::RemoteVideoTracksChanged { participant_id } => {
 6383                self.leader_updated(participant_id, window, cx);
 6384            }
 6385        }
 6386    }
 6387
 6388    pub fn database_id(&self) -> Option<WorkspaceId> {
 6389        self.database_id
 6390    }
 6391
 6392    #[cfg(any(test, feature = "test-support"))]
 6393    pub(crate) fn set_database_id(&mut self, id: WorkspaceId) {
 6394        self.database_id = Some(id);
 6395    }
 6396
 6397    pub fn session_id(&self) -> Option<String> {
 6398        self.session_id.clone()
 6399    }
 6400
 6401    fn save_window_bounds(&self, window: &mut Window, cx: &mut App) -> Task<()> {
 6402        let Some(display) = window.display(cx) else {
 6403            return Task::ready(());
 6404        };
 6405        let Ok(display_uuid) = display.uuid() else {
 6406            return Task::ready(());
 6407        };
 6408
 6409        let window_bounds = window.inner_window_bounds();
 6410        let database_id = self.database_id;
 6411        let has_paths = !self.root_paths(cx).is_empty();
 6412        let db = WorkspaceDb::global(cx);
 6413        let kvp = db::kvp::KeyValueStore::global(cx);
 6414
 6415        cx.background_executor().spawn(async move {
 6416            if !has_paths {
 6417                persistence::write_default_window_bounds(&kvp, window_bounds, display_uuid)
 6418                    .await
 6419                    .log_err();
 6420            }
 6421            if let Some(database_id) = database_id {
 6422                db.set_window_open_status(
 6423                    database_id,
 6424                    SerializedWindowBounds(window_bounds),
 6425                    display_uuid,
 6426                )
 6427                .await
 6428                .log_err();
 6429            } else {
 6430                persistence::write_default_window_bounds(&kvp, window_bounds, display_uuid)
 6431                    .await
 6432                    .log_err();
 6433            }
 6434        })
 6435    }
 6436
 6437    /// Bypass the 200ms serialization throttle and write workspace state to
 6438    /// the DB immediately. Returns a task the caller can await to ensure the
 6439    /// write completes. Used by the quit handler so the most recent state
 6440    /// isn't lost to a pending throttle timer when the process exits.
 6441    pub fn flush_serialization(&mut self, window: &mut Window, cx: &mut App) -> Task<()> {
 6442        self._schedule_serialize_workspace.take();
 6443        self._serialize_workspace_task.take();
 6444        self.bounds_save_task_queued.take();
 6445
 6446        let bounds_task = self.save_window_bounds(window, cx);
 6447        let serialize_task = self.serialize_workspace_internal(window, cx);
 6448        cx.spawn(async move |_| {
 6449            bounds_task.await;
 6450            serialize_task.await;
 6451        })
 6452    }
 6453
 6454    pub fn root_paths(&self, cx: &App) -> Vec<Arc<Path>> {
 6455        let project = self.project().read(cx);
 6456        project
 6457            .visible_worktrees(cx)
 6458            .map(|worktree| worktree.read(cx).abs_path())
 6459            .collect::<Vec<_>>()
 6460    }
 6461
 6462    fn remove_panes(&mut self, member: Member, window: &mut Window, cx: &mut Context<Workspace>) {
 6463        match member {
 6464            Member::Axis(PaneAxis { members, .. }) => {
 6465                for child in members.iter() {
 6466                    self.remove_panes(child.clone(), window, cx)
 6467                }
 6468            }
 6469            Member::Pane(pane) => {
 6470                self.force_remove_pane(&pane, &None, window, cx);
 6471            }
 6472        }
 6473    }
 6474
 6475    fn remove_from_session(&mut self, window: &mut Window, cx: &mut App) -> Task<()> {
 6476        self.session_id.take();
 6477        self.serialize_workspace_internal(window, cx)
 6478    }
 6479
 6480    fn force_remove_pane(
 6481        &mut self,
 6482        pane: &Entity<Pane>,
 6483        focus_on: &Option<Entity<Pane>>,
 6484        window: &mut Window,
 6485        cx: &mut Context<Workspace>,
 6486    ) {
 6487        self.panes.retain(|p| p != pane);
 6488        if let Some(focus_on) = focus_on {
 6489            focus_on.update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx));
 6490        } else if self.active_pane() == pane {
 6491            self.panes
 6492                .last()
 6493                .unwrap()
 6494                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx));
 6495        }
 6496        if self.last_active_center_pane == Some(pane.downgrade()) {
 6497            self.last_active_center_pane = None;
 6498        }
 6499        cx.notify();
 6500    }
 6501
 6502    fn serialize_workspace(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 6503        if self._schedule_serialize_workspace.is_none() {
 6504            self._schedule_serialize_workspace =
 6505                Some(cx.spawn_in(window, async move |this, cx| {
 6506                    cx.background_executor()
 6507                        .timer(SERIALIZATION_THROTTLE_TIME)
 6508                        .await;
 6509                    this.update_in(cx, |this, window, cx| {
 6510                        this._serialize_workspace_task =
 6511                            Some(this.serialize_workspace_internal(window, cx));
 6512                        this._schedule_serialize_workspace.take();
 6513                    })
 6514                    .log_err();
 6515                }));
 6516        }
 6517    }
 6518
 6519    fn serialize_workspace_internal(&self, window: &mut Window, cx: &mut App) -> Task<()> {
 6520        let Some(database_id) = self.database_id() else {
 6521            return Task::ready(());
 6522        };
 6523
 6524        fn serialize_pane_handle(
 6525            pane_handle: &Entity<Pane>,
 6526            window: &mut Window,
 6527            cx: &mut App,
 6528        ) -> SerializedPane {
 6529            let (items, active, pinned_count) = {
 6530                let pane = pane_handle.read(cx);
 6531                let active_item_id = pane.active_item().map(|item| item.item_id());
 6532                (
 6533                    pane.items()
 6534                        .filter_map(|handle| {
 6535                            let handle = handle.to_serializable_item_handle(cx)?;
 6536
 6537                            Some(SerializedItem {
 6538                                kind: Arc::from(handle.serialized_item_kind()),
 6539                                item_id: handle.item_id().as_u64(),
 6540                                active: Some(handle.item_id()) == active_item_id,
 6541                                preview: pane.is_active_preview_item(handle.item_id()),
 6542                            })
 6543                        })
 6544                        .collect::<Vec<_>>(),
 6545                    pane.has_focus(window, cx),
 6546                    pane.pinned_count(),
 6547                )
 6548            };
 6549
 6550            SerializedPane::new(items, active, pinned_count)
 6551        }
 6552
 6553        fn build_serialized_pane_group(
 6554            pane_group: &Member,
 6555            window: &mut Window,
 6556            cx: &mut App,
 6557        ) -> SerializedPaneGroup {
 6558            match pane_group {
 6559                Member::Axis(PaneAxis {
 6560                    axis,
 6561                    members,
 6562                    flexes,
 6563                    bounding_boxes: _,
 6564                }) => SerializedPaneGroup::Group {
 6565                    axis: SerializedAxis(*axis),
 6566                    children: members
 6567                        .iter()
 6568                        .map(|member| build_serialized_pane_group(member, window, cx))
 6569                        .collect::<Vec<_>>(),
 6570                    flexes: Some(flexes.lock().clone()),
 6571                },
 6572                Member::Pane(pane_handle) => {
 6573                    SerializedPaneGroup::Pane(serialize_pane_handle(pane_handle, window, cx))
 6574                }
 6575            }
 6576        }
 6577
 6578        fn build_serialized_docks(
 6579            this: &Workspace,
 6580            window: &mut Window,
 6581            cx: &mut App,
 6582        ) -> DockStructure {
 6583            this.capture_dock_state(window, cx)
 6584        }
 6585
 6586        match self.workspace_location(cx) {
 6587            WorkspaceLocation::Location(location, paths) => {
 6588                let breakpoints = self.project.update(cx, |project, cx| {
 6589                    project
 6590                        .breakpoint_store()
 6591                        .read(cx)
 6592                        .all_source_breakpoints(cx)
 6593                });
 6594                let user_toolchains = self
 6595                    .project
 6596                    .read(cx)
 6597                    .user_toolchains(cx)
 6598                    .unwrap_or_default();
 6599
 6600                let center_group = build_serialized_pane_group(&self.center.root, window, cx);
 6601                let docks = build_serialized_docks(self, window, cx);
 6602                let window_bounds = Some(SerializedWindowBounds(window.window_bounds()));
 6603
 6604                let serialized_workspace = SerializedWorkspace {
 6605                    id: database_id,
 6606                    location,
 6607                    paths,
 6608                    center_group,
 6609                    window_bounds,
 6610                    display: Default::default(),
 6611                    docks,
 6612                    centered_layout: self.centered_layout,
 6613                    session_id: self.session_id.clone(),
 6614                    breakpoints,
 6615                    window_id: Some(window.window_handle().window_id().as_u64()),
 6616                    user_toolchains,
 6617                };
 6618
 6619                let db = WorkspaceDb::global(cx);
 6620                window.spawn(cx, async move |_| {
 6621                    db.save_workspace(serialized_workspace).await;
 6622                })
 6623            }
 6624            WorkspaceLocation::DetachFromSession => {
 6625                let window_bounds = SerializedWindowBounds(window.window_bounds());
 6626                let display = window.display(cx).and_then(|d| d.uuid().ok());
 6627                // Save dock state for empty local workspaces
 6628                let docks = build_serialized_docks(self, window, cx);
 6629                let db = WorkspaceDb::global(cx);
 6630                let kvp = db::kvp::KeyValueStore::global(cx);
 6631                window.spawn(cx, async move |_| {
 6632                    db.set_window_open_status(
 6633                        database_id,
 6634                        window_bounds,
 6635                        display.unwrap_or_default(),
 6636                    )
 6637                    .await
 6638                    .log_err();
 6639                    db.set_session_id(database_id, None).await.log_err();
 6640                    persistence::write_default_dock_state(&kvp, docks)
 6641                        .await
 6642                        .log_err();
 6643                })
 6644            }
 6645            WorkspaceLocation::None => {
 6646                // Save dock state for empty non-local workspaces
 6647                let docks = build_serialized_docks(self, window, cx);
 6648                let kvp = db::kvp::KeyValueStore::global(cx);
 6649                window.spawn(cx, async move |_| {
 6650                    persistence::write_default_dock_state(&kvp, docks)
 6651                        .await
 6652                        .log_err();
 6653                })
 6654            }
 6655        }
 6656    }
 6657
 6658    fn has_any_items_open(&self, cx: &App) -> bool {
 6659        self.panes.iter().any(|pane| pane.read(cx).items_len() > 0)
 6660    }
 6661
 6662    fn workspace_location(&self, cx: &App) -> WorkspaceLocation {
 6663        let paths = PathList::new(&self.root_paths(cx));
 6664        if let Some(connection) = self.project.read(cx).remote_connection_options(cx) {
 6665            WorkspaceLocation::Location(SerializedWorkspaceLocation::Remote(connection), paths)
 6666        } else if self.project.read(cx).is_local() {
 6667            if !paths.is_empty() || self.has_any_items_open(cx) {
 6668                WorkspaceLocation::Location(SerializedWorkspaceLocation::Local, paths)
 6669            } else {
 6670                WorkspaceLocation::DetachFromSession
 6671            }
 6672        } else {
 6673            WorkspaceLocation::None
 6674        }
 6675    }
 6676
 6677    fn update_history(&self, cx: &mut App) {
 6678        let Some(id) = self.database_id() else {
 6679            return;
 6680        };
 6681        if !self.project.read(cx).is_local() {
 6682            return;
 6683        }
 6684        if let Some(manager) = HistoryManager::global(cx) {
 6685            let paths = PathList::new(&self.root_paths(cx));
 6686            manager.update(cx, |this, cx| {
 6687                this.update_history(id, HistoryManagerEntry::new(id, &paths), cx);
 6688            });
 6689        }
 6690    }
 6691
 6692    async fn serialize_items(
 6693        this: &WeakEntity<Self>,
 6694        items_rx: UnboundedReceiver<Box<dyn SerializableItemHandle>>,
 6695        cx: &mut AsyncWindowContext,
 6696    ) -> Result<()> {
 6697        const CHUNK_SIZE: usize = 200;
 6698
 6699        let mut serializable_items = items_rx.ready_chunks(CHUNK_SIZE);
 6700
 6701        while let Some(items_received) = serializable_items.next().await {
 6702            let unique_items =
 6703                items_received
 6704                    .into_iter()
 6705                    .fold(HashMap::default(), |mut acc, item| {
 6706                        acc.entry(item.item_id()).or_insert(item);
 6707                        acc
 6708                    });
 6709
 6710            // We use into_iter() here so that the references to the items are moved into
 6711            // the tasks and not kept alive while we're sleeping.
 6712            for (_, item) in unique_items.into_iter() {
 6713                if let Ok(Some(task)) = this.update_in(cx, |workspace, window, cx| {
 6714                    item.serialize(workspace, false, window, cx)
 6715                }) {
 6716                    cx.background_spawn(async move { task.await.log_err() })
 6717                        .detach();
 6718                }
 6719            }
 6720
 6721            cx.background_executor()
 6722                .timer(SERIALIZATION_THROTTLE_TIME)
 6723                .await;
 6724        }
 6725
 6726        Ok(())
 6727    }
 6728
 6729    pub(crate) fn enqueue_item_serialization(
 6730        &mut self,
 6731        item: Box<dyn SerializableItemHandle>,
 6732    ) -> Result<()> {
 6733        self.serializable_items_tx
 6734            .unbounded_send(item)
 6735            .map_err(|err| anyhow!("failed to send serializable item over channel: {err}"))
 6736    }
 6737
 6738    pub(crate) fn load_workspace(
 6739        serialized_workspace: SerializedWorkspace,
 6740        paths_to_open: Vec<Option<ProjectPath>>,
 6741        window: &mut Window,
 6742        cx: &mut Context<Workspace>,
 6743    ) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 6744        cx.spawn_in(window, async move |workspace, cx| {
 6745            let project = workspace.read_with(cx, |workspace, _| workspace.project().clone())?;
 6746
 6747            let mut center_group = None;
 6748            let mut center_items = None;
 6749
 6750            // Traverse the splits tree and add to things
 6751            if let Some((group, active_pane, items)) = serialized_workspace
 6752                .center_group
 6753                .deserialize(&project, serialized_workspace.id, workspace.clone(), cx)
 6754                .await
 6755            {
 6756                center_items = Some(items);
 6757                center_group = Some((group, active_pane))
 6758            }
 6759
 6760            let mut items_by_project_path = HashMap::default();
 6761            let mut item_ids_by_kind = HashMap::default();
 6762            let mut all_deserialized_items = Vec::default();
 6763            cx.update(|_, cx| {
 6764                for item in center_items.unwrap_or_default().into_iter().flatten() {
 6765                    if let Some(serializable_item_handle) = item.to_serializable_item_handle(cx) {
 6766                        item_ids_by_kind
 6767                            .entry(serializable_item_handle.serialized_item_kind())
 6768                            .or_insert(Vec::new())
 6769                            .push(item.item_id().as_u64() as ItemId);
 6770                    }
 6771
 6772                    if let Some(project_path) = item.project_path(cx) {
 6773                        items_by_project_path.insert(project_path, item.clone());
 6774                    }
 6775                    all_deserialized_items.push(item);
 6776                }
 6777            })?;
 6778
 6779            let opened_items = paths_to_open
 6780                .into_iter()
 6781                .map(|path_to_open| {
 6782                    path_to_open
 6783                        .and_then(|path_to_open| items_by_project_path.remove(&path_to_open))
 6784                })
 6785                .collect::<Vec<_>>();
 6786
 6787            // Remove old panes from workspace panes list
 6788            workspace.update_in(cx, |workspace, window, cx| {
 6789                if let Some((center_group, active_pane)) = center_group {
 6790                    workspace.remove_panes(workspace.center.root.clone(), window, cx);
 6791
 6792                    // Swap workspace center group
 6793                    workspace.center = PaneGroup::with_root(center_group);
 6794                    workspace.center.set_is_center(true);
 6795                    workspace.center.mark_positions(cx);
 6796
 6797                    if let Some(active_pane) = active_pane {
 6798                        workspace.set_active_pane(&active_pane, window, cx);
 6799                        cx.focus_self(window);
 6800                    } else {
 6801                        workspace.set_active_pane(&workspace.center.first_pane(), window, cx);
 6802                    }
 6803                }
 6804
 6805                let docks = serialized_workspace.docks;
 6806
 6807                for (dock, serialized_dock) in [
 6808                    (&mut workspace.right_dock, docks.right),
 6809                    (&mut workspace.left_dock, docks.left),
 6810                    (&mut workspace.bottom_dock, docks.bottom),
 6811                ]
 6812                .iter_mut()
 6813                {
 6814                    dock.update(cx, |dock, cx| {
 6815                        dock.serialized_dock = Some(serialized_dock.clone());
 6816                        dock.restore_state(window, cx);
 6817                    });
 6818                }
 6819
 6820                cx.notify();
 6821            })?;
 6822
 6823            let _ = project
 6824                .update(cx, |project, cx| {
 6825                    project
 6826                        .breakpoint_store()
 6827                        .update(cx, |breakpoint_store, cx| {
 6828                            breakpoint_store
 6829                                .with_serialized_breakpoints(serialized_workspace.breakpoints, cx)
 6830                        })
 6831                })
 6832                .await;
 6833
 6834            // Clean up all the items that have _not_ been loaded. Our ItemIds aren't stable. That means
 6835            // after loading the items, we might have different items and in order to avoid
 6836            // the database filling up, we delete items that haven't been loaded now.
 6837            //
 6838            // The items that have been loaded, have been saved after they've been added to the workspace.
 6839            let clean_up_tasks = workspace.update_in(cx, |_, window, cx| {
 6840                item_ids_by_kind
 6841                    .into_iter()
 6842                    .map(|(item_kind, loaded_items)| {
 6843                        SerializableItemRegistry::cleanup(
 6844                            item_kind,
 6845                            serialized_workspace.id,
 6846                            loaded_items,
 6847                            window,
 6848                            cx,
 6849                        )
 6850                        .log_err()
 6851                    })
 6852                    .collect::<Vec<_>>()
 6853            })?;
 6854
 6855            futures::future::join_all(clean_up_tasks).await;
 6856
 6857            workspace
 6858                .update_in(cx, |workspace, window, cx| {
 6859                    // Serialize ourself to make sure our timestamps and any pane / item changes are replicated
 6860                    workspace.serialize_workspace_internal(window, cx).detach();
 6861
 6862                    // Ensure that we mark the window as edited if we did load dirty items
 6863                    workspace.update_window_edited(window, cx);
 6864                })
 6865                .ok();
 6866
 6867            Ok(opened_items)
 6868        })
 6869    }
 6870
 6871    pub fn key_context(&self, cx: &App) -> KeyContext {
 6872        let mut context = KeyContext::new_with_defaults();
 6873        context.add("Workspace");
 6874        context.set("keyboard_layout", cx.keyboard_layout().name().to_string());
 6875        if let Some(status) = self
 6876            .debugger_provider
 6877            .as_ref()
 6878            .and_then(|provider| provider.active_thread_state(cx))
 6879        {
 6880            match status {
 6881                ThreadStatus::Running | ThreadStatus::Stepping => {
 6882                    context.add("debugger_running");
 6883                }
 6884                ThreadStatus::Stopped => context.add("debugger_stopped"),
 6885                ThreadStatus::Exited | ThreadStatus::Ended => {}
 6886            }
 6887        }
 6888
 6889        if self.left_dock.read(cx).is_open() {
 6890            if let Some(active_panel) = self.left_dock.read(cx).active_panel() {
 6891                context.set("left_dock", active_panel.panel_key());
 6892            }
 6893        }
 6894
 6895        if self.right_dock.read(cx).is_open() {
 6896            if let Some(active_panel) = self.right_dock.read(cx).active_panel() {
 6897                context.set("right_dock", active_panel.panel_key());
 6898            }
 6899        }
 6900
 6901        if self.bottom_dock.read(cx).is_open() {
 6902            if let Some(active_panel) = self.bottom_dock.read(cx).active_panel() {
 6903                context.set("bottom_dock", active_panel.panel_key());
 6904            }
 6905        }
 6906
 6907        context
 6908    }
 6909
 6910    /// Multiworkspace uses this to add workspace action handling to itself
 6911    pub fn actions(&self, div: Div, window: &mut Window, cx: &mut Context<Self>) -> Div {
 6912        self.add_workspace_actions_listeners(div, window, cx)
 6913            .on_action(cx.listener(
 6914                |_workspace, action_sequence: &settings::ActionSequence, window, cx| {
 6915                    for action in &action_sequence.0 {
 6916                        window.dispatch_action(action.boxed_clone(), cx);
 6917                    }
 6918                },
 6919            ))
 6920            .on_action(cx.listener(Self::close_inactive_items_and_panes))
 6921            .on_action(cx.listener(Self::close_all_items_and_panes))
 6922            .on_action(cx.listener(Self::close_item_in_all_panes))
 6923            .on_action(cx.listener(Self::save_all))
 6924            .on_action(cx.listener(Self::send_keystrokes))
 6925            .on_action(cx.listener(Self::add_folder_to_project))
 6926            .on_action(cx.listener(Self::follow_next_collaborator))
 6927            .on_action(cx.listener(Self::activate_pane_at_index))
 6928            .on_action(cx.listener(Self::move_item_to_pane_at_index))
 6929            .on_action(cx.listener(Self::move_focused_panel_to_next_position))
 6930            .on_action(cx.listener(Self::toggle_edit_predictions_all_files))
 6931            .on_action(cx.listener(Self::toggle_theme_mode))
 6932            .on_action(cx.listener(|workspace, _: &Unfollow, window, cx| {
 6933                let pane = workspace.active_pane().clone();
 6934                workspace.unfollow_in_pane(&pane, window, cx);
 6935            }))
 6936            .on_action(cx.listener(|workspace, action: &Save, window, cx| {
 6937                workspace
 6938                    .save_active_item(action.save_intent.unwrap_or(SaveIntent::Save), window, cx)
 6939                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 6940            }))
 6941            .on_action(cx.listener(|workspace, _: &SaveWithoutFormat, window, cx| {
 6942                workspace
 6943                    .save_active_item(SaveIntent::SaveWithoutFormat, window, cx)
 6944                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 6945            }))
 6946            .on_action(cx.listener(|workspace, _: &SaveAs, window, cx| {
 6947                workspace
 6948                    .save_active_item(SaveIntent::SaveAs, window, cx)
 6949                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 6950            }))
 6951            .on_action(
 6952                cx.listener(|workspace, _: &ActivatePreviousPane, window, cx| {
 6953                    workspace.activate_previous_pane(window, cx)
 6954                }),
 6955            )
 6956            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 6957                workspace.activate_next_pane(window, cx)
 6958            }))
 6959            .on_action(cx.listener(|workspace, _: &ActivateLastPane, window, cx| {
 6960                workspace.activate_last_pane(window, cx)
 6961            }))
 6962            .on_action(
 6963                cx.listener(|workspace, _: &ActivateNextWindow, _window, cx| {
 6964                    workspace.activate_next_window(cx)
 6965                }),
 6966            )
 6967            .on_action(
 6968                cx.listener(|workspace, _: &ActivatePreviousWindow, _window, cx| {
 6969                    workspace.activate_previous_window(cx)
 6970                }),
 6971            )
 6972            .on_action(cx.listener(|workspace, _: &ActivatePaneLeft, window, cx| {
 6973                workspace.activate_pane_in_direction(SplitDirection::Left, window, cx)
 6974            }))
 6975            .on_action(cx.listener(|workspace, _: &ActivatePaneRight, window, cx| {
 6976                workspace.activate_pane_in_direction(SplitDirection::Right, window, cx)
 6977            }))
 6978            .on_action(cx.listener(|workspace, _: &ActivatePaneUp, window, cx| {
 6979                workspace.activate_pane_in_direction(SplitDirection::Up, window, cx)
 6980            }))
 6981            .on_action(cx.listener(|workspace, _: &ActivatePaneDown, window, cx| {
 6982                workspace.activate_pane_in_direction(SplitDirection::Down, window, cx)
 6983            }))
 6984            .on_action(cx.listener(
 6985                |workspace, action: &MoveItemToPaneInDirection, window, cx| {
 6986                    workspace.move_item_to_pane_in_direction(action, window, cx)
 6987                },
 6988            ))
 6989            .on_action(cx.listener(|workspace, _: &SwapPaneLeft, _, cx| {
 6990                workspace.swap_pane_in_direction(SplitDirection::Left, cx)
 6991            }))
 6992            .on_action(cx.listener(|workspace, _: &SwapPaneRight, _, cx| {
 6993                workspace.swap_pane_in_direction(SplitDirection::Right, cx)
 6994            }))
 6995            .on_action(cx.listener(|workspace, _: &SwapPaneUp, _, cx| {
 6996                workspace.swap_pane_in_direction(SplitDirection::Up, cx)
 6997            }))
 6998            .on_action(cx.listener(|workspace, _: &SwapPaneDown, _, cx| {
 6999                workspace.swap_pane_in_direction(SplitDirection::Down, cx)
 7000            }))
 7001            .on_action(cx.listener(|workspace, _: &SwapPaneAdjacent, window, cx| {
 7002                const DIRECTION_PRIORITY: [SplitDirection; 4] = [
 7003                    SplitDirection::Down,
 7004                    SplitDirection::Up,
 7005                    SplitDirection::Right,
 7006                    SplitDirection::Left,
 7007                ];
 7008                for dir in DIRECTION_PRIORITY {
 7009                    if workspace.find_pane_in_direction(dir, cx).is_some() {
 7010                        workspace.swap_pane_in_direction(dir, cx);
 7011                        workspace.activate_pane_in_direction(dir.opposite(), window, cx);
 7012                        break;
 7013                    }
 7014                }
 7015            }))
 7016            .on_action(cx.listener(|workspace, _: &MovePaneLeft, _, cx| {
 7017                workspace.move_pane_to_border(SplitDirection::Left, cx)
 7018            }))
 7019            .on_action(cx.listener(|workspace, _: &MovePaneRight, _, cx| {
 7020                workspace.move_pane_to_border(SplitDirection::Right, cx)
 7021            }))
 7022            .on_action(cx.listener(|workspace, _: &MovePaneUp, _, cx| {
 7023                workspace.move_pane_to_border(SplitDirection::Up, cx)
 7024            }))
 7025            .on_action(cx.listener(|workspace, _: &MovePaneDown, _, cx| {
 7026                workspace.move_pane_to_border(SplitDirection::Down, cx)
 7027            }))
 7028            .on_action(cx.listener(|this, _: &ToggleLeftDock, window, cx| {
 7029                this.toggle_dock(DockPosition::Left, window, cx);
 7030            }))
 7031            .on_action(cx.listener(
 7032                |workspace: &mut Workspace, _: &ToggleRightDock, window, cx| {
 7033                    workspace.toggle_dock(DockPosition::Right, window, cx);
 7034                },
 7035            ))
 7036            .on_action(cx.listener(
 7037                |workspace: &mut Workspace, _: &ToggleBottomDock, window, cx| {
 7038                    workspace.toggle_dock(DockPosition::Bottom, window, cx);
 7039                },
 7040            ))
 7041            .on_action(cx.listener(
 7042                |workspace: &mut Workspace, _: &CloseActiveDock, window, cx| {
 7043                    if !workspace.close_active_dock(window, cx) {
 7044                        cx.propagate();
 7045                    }
 7046                },
 7047            ))
 7048            .on_action(
 7049                cx.listener(|workspace: &mut Workspace, _: &CloseAllDocks, window, cx| {
 7050                    workspace.close_all_docks(window, cx);
 7051                }),
 7052            )
 7053            .on_action(cx.listener(Self::toggle_all_docks))
 7054            .on_action(cx.listener(
 7055                |workspace: &mut Workspace, _: &ClearAllNotifications, _, cx| {
 7056                    workspace.clear_all_notifications(cx);
 7057                },
 7058            ))
 7059            .on_action(cx.listener(
 7060                |workspace: &mut Workspace, _: &ClearNavigationHistory, window, cx| {
 7061                    workspace.clear_navigation_history(window, cx);
 7062                },
 7063            ))
 7064            .on_action(cx.listener(
 7065                |workspace: &mut Workspace, _: &SuppressNotification, _, cx| {
 7066                    if let Some((notification_id, _)) = workspace.notifications.pop() {
 7067                        workspace.suppress_notification(&notification_id, cx);
 7068                    }
 7069                },
 7070            ))
 7071            .on_action(cx.listener(
 7072                |workspace: &mut Workspace, _: &ToggleWorktreeSecurity, window, cx| {
 7073                    workspace.show_worktree_trust_security_modal(true, window, cx);
 7074                },
 7075            ))
 7076            .on_action(
 7077                cx.listener(|_: &mut Workspace, _: &ClearTrustedWorktrees, _, cx| {
 7078                    if let Some(trusted_worktrees) = TrustedWorktrees::try_get_global(cx) {
 7079                        trusted_worktrees.update(cx, |trusted_worktrees, _| {
 7080                            trusted_worktrees.clear_trusted_paths()
 7081                        });
 7082                        let db = WorkspaceDb::global(cx);
 7083                        cx.spawn(async move |_, cx| {
 7084                            if db.clear_trusted_worktrees().await.log_err().is_some() {
 7085                                cx.update(|cx| reload(cx));
 7086                            }
 7087                        })
 7088                        .detach();
 7089                    }
 7090                }),
 7091            )
 7092            .on_action(cx.listener(
 7093                |workspace: &mut Workspace, _: &ReopenClosedItem, window, cx| {
 7094                    workspace.reopen_closed_item(window, cx).detach();
 7095                },
 7096            ))
 7097            .on_action(cx.listener(
 7098                |workspace: &mut Workspace, _: &ResetActiveDockSize, window, cx| {
 7099                    for dock in workspace.all_docks() {
 7100                        if dock.focus_handle(cx).contains_focused(window, cx) {
 7101                            let panel = dock.read(cx).active_panel().cloned();
 7102                            if let Some(panel) = panel {
 7103                                dock.update(cx, |dock, cx| {
 7104                                    dock.set_panel_size_state(
 7105                                        panel.as_ref(),
 7106                                        dock::PanelSizeState::default(),
 7107                                        cx,
 7108                                    );
 7109                                });
 7110                            }
 7111                            return;
 7112                        }
 7113                    }
 7114                },
 7115            ))
 7116            .on_action(cx.listener(
 7117                |workspace: &mut Workspace, _: &ResetOpenDocksSize, _window, cx| {
 7118                    for dock in workspace.all_docks() {
 7119                        let panel = dock.read(cx).visible_panel().cloned();
 7120                        if let Some(panel) = panel {
 7121                            dock.update(cx, |dock, cx| {
 7122                                dock.set_panel_size_state(
 7123                                    panel.as_ref(),
 7124                                    dock::PanelSizeState::default(),
 7125                                    cx,
 7126                                );
 7127                            });
 7128                        }
 7129                    }
 7130                },
 7131            ))
 7132            .on_action(cx.listener(
 7133                |workspace: &mut Workspace, act: &IncreaseActiveDockSize, window, cx| {
 7134                    adjust_active_dock_size_by_px(
 7135                        px_with_ui_font_fallback(act.px, cx),
 7136                        workspace,
 7137                        window,
 7138                        cx,
 7139                    );
 7140                },
 7141            ))
 7142            .on_action(cx.listener(
 7143                |workspace: &mut Workspace, act: &DecreaseActiveDockSize, window, cx| {
 7144                    adjust_active_dock_size_by_px(
 7145                        px_with_ui_font_fallback(act.px, cx) * -1.,
 7146                        workspace,
 7147                        window,
 7148                        cx,
 7149                    );
 7150                },
 7151            ))
 7152            .on_action(cx.listener(
 7153                |workspace: &mut Workspace, act: &IncreaseOpenDocksSize, window, cx| {
 7154                    adjust_open_docks_size_by_px(
 7155                        px_with_ui_font_fallback(act.px, cx),
 7156                        workspace,
 7157                        window,
 7158                        cx,
 7159                    );
 7160                },
 7161            ))
 7162            .on_action(cx.listener(
 7163                |workspace: &mut Workspace, act: &DecreaseOpenDocksSize, window, cx| {
 7164                    adjust_open_docks_size_by_px(
 7165                        px_with_ui_font_fallback(act.px, cx) * -1.,
 7166                        workspace,
 7167                        window,
 7168                        cx,
 7169                    );
 7170                },
 7171            ))
 7172            .on_action(cx.listener(Workspace::toggle_centered_layout))
 7173            .on_action(cx.listener(
 7174                |workspace: &mut Workspace, action: &pane::ActivateNextItem, window, cx| {
 7175                    if let Some(active_dock) = workspace.active_dock(window, cx) {
 7176                        let dock = active_dock.read(cx);
 7177                        if let Some(active_panel) = dock.active_panel() {
 7178                            if active_panel.pane(cx).is_none() {
 7179                                let mut recent_pane: Option<Entity<Pane>> = None;
 7180                                let mut recent_timestamp = 0;
 7181                                for pane_handle in workspace.panes() {
 7182                                    let pane = pane_handle.read(cx);
 7183                                    for entry in pane.activation_history() {
 7184                                        if entry.timestamp > recent_timestamp {
 7185                                            recent_timestamp = entry.timestamp;
 7186                                            recent_pane = Some(pane_handle.clone());
 7187                                        }
 7188                                    }
 7189                                }
 7190
 7191                                if let Some(pane) = recent_pane {
 7192                                    let wrap_around = action.wrap_around;
 7193                                    pane.update(cx, |pane, cx| {
 7194                                        let current_index = pane.active_item_index();
 7195                                        let items_len = pane.items_len();
 7196                                        if items_len > 0 {
 7197                                            let next_index = if current_index + 1 < items_len {
 7198                                                current_index + 1
 7199                                            } else if wrap_around {
 7200                                                0
 7201                                            } else {
 7202                                                return;
 7203                                            };
 7204                                            pane.activate_item(
 7205                                                next_index, false, false, window, cx,
 7206                                            );
 7207                                        }
 7208                                    });
 7209                                    return;
 7210                                }
 7211                            }
 7212                        }
 7213                    }
 7214                    cx.propagate();
 7215                },
 7216            ))
 7217            .on_action(cx.listener(
 7218                |workspace: &mut Workspace, action: &pane::ActivatePreviousItem, window, cx| {
 7219                    if let Some(active_dock) = workspace.active_dock(window, cx) {
 7220                        let dock = active_dock.read(cx);
 7221                        if let Some(active_panel) = dock.active_panel() {
 7222                            if active_panel.pane(cx).is_none() {
 7223                                let mut recent_pane: Option<Entity<Pane>> = None;
 7224                                let mut recent_timestamp = 0;
 7225                                for pane_handle in workspace.panes() {
 7226                                    let pane = pane_handle.read(cx);
 7227                                    for entry in pane.activation_history() {
 7228                                        if entry.timestamp > recent_timestamp {
 7229                                            recent_timestamp = entry.timestamp;
 7230                                            recent_pane = Some(pane_handle.clone());
 7231                                        }
 7232                                    }
 7233                                }
 7234
 7235                                if let Some(pane) = recent_pane {
 7236                                    let wrap_around = action.wrap_around;
 7237                                    pane.update(cx, |pane, cx| {
 7238                                        let current_index = pane.active_item_index();
 7239                                        let items_len = pane.items_len();
 7240                                        if items_len > 0 {
 7241                                            let prev_index = if current_index > 0 {
 7242                                                current_index - 1
 7243                                            } else if wrap_around {
 7244                                                items_len.saturating_sub(1)
 7245                                            } else {
 7246                                                return;
 7247                                            };
 7248                                            pane.activate_item(
 7249                                                prev_index, false, false, window, cx,
 7250                                            );
 7251                                        }
 7252                                    });
 7253                                    return;
 7254                                }
 7255                            }
 7256                        }
 7257                    }
 7258                    cx.propagate();
 7259                },
 7260            ))
 7261            .on_action(cx.listener(
 7262                |workspace: &mut Workspace, action: &pane::CloseActiveItem, window, cx| {
 7263                    if let Some(active_dock) = workspace.active_dock(window, cx) {
 7264                        let dock = active_dock.read(cx);
 7265                        if let Some(active_panel) = dock.active_panel() {
 7266                            if active_panel.pane(cx).is_none() {
 7267                                let active_pane = workspace.active_pane().clone();
 7268                                active_pane.update(cx, |pane, cx| {
 7269                                    pane.close_active_item(action, window, cx)
 7270                                        .detach_and_log_err(cx);
 7271                                });
 7272                                return;
 7273                            }
 7274                        }
 7275                    }
 7276                    cx.propagate();
 7277                },
 7278            ))
 7279            .on_action(
 7280                cx.listener(|workspace, _: &ToggleReadOnlyFile, window, cx| {
 7281                    let pane = workspace.active_pane().clone();
 7282                    if let Some(item) = pane.read(cx).active_item() {
 7283                        item.toggle_read_only(window, cx);
 7284                    }
 7285                }),
 7286            )
 7287            .on_action(cx.listener(|workspace, _: &FocusCenterPane, window, cx| {
 7288                workspace.focus_center_pane(window, cx);
 7289            }))
 7290            .on_action(cx.listener(Workspace::cancel))
 7291    }
 7292
 7293    #[cfg(any(test, feature = "test-support"))]
 7294    pub fn set_random_database_id(&mut self) {
 7295        self.database_id = Some(WorkspaceId(Uuid::new_v4().as_u64_pair().0 as i64));
 7296    }
 7297
 7298    #[cfg(any(test, feature = "test-support"))]
 7299    pub(crate) fn test_new(
 7300        project: Entity<Project>,
 7301        window: &mut Window,
 7302        cx: &mut Context<Self>,
 7303    ) -> Self {
 7304        use node_runtime::NodeRuntime;
 7305        use session::Session;
 7306
 7307        let client = project.read(cx).client();
 7308        let user_store = project.read(cx).user_store();
 7309        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 7310        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 7311        window.activate_window();
 7312        let app_state = Arc::new(AppState {
 7313            languages: project.read(cx).languages().clone(),
 7314            workspace_store,
 7315            client,
 7316            user_store,
 7317            fs: project.read(cx).fs().clone(),
 7318            build_window_options: |_, _| Default::default(),
 7319            node_runtime: NodeRuntime::unavailable(),
 7320            session,
 7321        });
 7322        let workspace = Self::new(Default::default(), project, app_state, window, cx);
 7323        workspace
 7324            .active_pane
 7325            .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx));
 7326        workspace
 7327    }
 7328
 7329    pub fn register_action<A: Action>(
 7330        &mut self,
 7331        callback: impl Fn(&mut Self, &A, &mut Window, &mut Context<Self>) + 'static,
 7332    ) -> &mut Self {
 7333        let callback = Arc::new(callback);
 7334
 7335        self.workspace_actions.push(Box::new(move |div, _, _, cx| {
 7336            let callback = callback.clone();
 7337            div.on_action(cx.listener(move |workspace, event, window, cx| {
 7338                (callback)(workspace, event, window, cx)
 7339            }))
 7340        }));
 7341        self
 7342    }
 7343    pub fn register_action_renderer(
 7344        &mut self,
 7345        callback: impl Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div + 'static,
 7346    ) -> &mut Self {
 7347        self.workspace_actions.push(Box::new(callback));
 7348        self
 7349    }
 7350
 7351    fn add_workspace_actions_listeners(
 7352        &self,
 7353        mut div: Div,
 7354        window: &mut Window,
 7355        cx: &mut Context<Self>,
 7356    ) -> Div {
 7357        for action in self.workspace_actions.iter() {
 7358            div = (action)(div, self, window, cx)
 7359        }
 7360        div
 7361    }
 7362
 7363    pub fn has_active_modal(&self, _: &mut Window, cx: &mut App) -> bool {
 7364        self.modal_layer.read(cx).has_active_modal()
 7365    }
 7366
 7367    pub fn is_active_modal_command_palette(&self, cx: &mut App) -> bool {
 7368        self.modal_layer
 7369            .read(cx)
 7370            .is_active_modal_command_palette(cx)
 7371    }
 7372
 7373    pub fn active_modal<V: ManagedView + 'static>(&self, cx: &App) -> Option<Entity<V>> {
 7374        self.modal_layer.read(cx).active_modal()
 7375    }
 7376
 7377    /// Toggles a modal of type `V`. If a modal of the same type is currently active,
 7378    /// it will be hidden. If a different modal is active, it will be replaced with the new one.
 7379    /// If no modal is active, the new modal will be shown.
 7380    ///
 7381    /// If closing the current modal fails (e.g., due to `on_before_dismiss` returning
 7382    /// `DismissDecision::Dismiss(false)` or `DismissDecision::Pending`), the new modal
 7383    /// will not be shown.
 7384    pub fn toggle_modal<V: ModalView, B>(&mut self, window: &mut Window, cx: &mut App, build: B)
 7385    where
 7386        B: FnOnce(&mut Window, &mut Context<V>) -> V,
 7387    {
 7388        self.modal_layer.update(cx, |modal_layer, cx| {
 7389            modal_layer.toggle_modal(window, cx, build)
 7390        })
 7391    }
 7392
 7393    pub fn hide_modal(&mut self, window: &mut Window, cx: &mut App) -> bool {
 7394        self.modal_layer
 7395            .update(cx, |modal_layer, cx| modal_layer.hide_modal(window, cx))
 7396    }
 7397
 7398    pub fn toggle_status_toast<V: ToastView>(&mut self, entity: Entity<V>, cx: &mut App) {
 7399        self.toast_layer
 7400            .update(cx, |toast_layer, cx| toast_layer.toggle_toast(cx, entity))
 7401    }
 7402
 7403    pub fn toggle_centered_layout(
 7404        &mut self,
 7405        _: &ToggleCenteredLayout,
 7406        _: &mut Window,
 7407        cx: &mut Context<Self>,
 7408    ) {
 7409        self.centered_layout = !self.centered_layout;
 7410        if let Some(database_id) = self.database_id() {
 7411            let db = WorkspaceDb::global(cx);
 7412            let centered_layout = self.centered_layout;
 7413            cx.background_spawn(async move {
 7414                db.set_centered_layout(database_id, centered_layout).await
 7415            })
 7416            .detach_and_log_err(cx);
 7417        }
 7418        cx.notify();
 7419    }
 7420
 7421    fn adjust_padding(padding: Option<f32>) -> f32 {
 7422        padding
 7423            .unwrap_or(CenteredPaddingSettings::default().0)
 7424            .clamp(
 7425                CenteredPaddingSettings::MIN_PADDING,
 7426                CenteredPaddingSettings::MAX_PADDING,
 7427            )
 7428    }
 7429
 7430    fn render_dock(
 7431        &self,
 7432        position: DockPosition,
 7433        dock: &Entity<Dock>,
 7434        window: &mut Window,
 7435        cx: &mut App,
 7436    ) -> Option<Div> {
 7437        if self.zoomed_position == Some(position) {
 7438            return None;
 7439        }
 7440
 7441        let leader_border = dock.read(cx).active_panel().and_then(|panel| {
 7442            let pane = panel.pane(cx)?;
 7443            let follower_states = &self.follower_states;
 7444            leader_border_for_pane(follower_states, &pane, window, cx)
 7445        });
 7446
 7447        let mut container = div()
 7448            .flex()
 7449            .overflow_hidden()
 7450            .flex_none()
 7451            .child(dock.clone())
 7452            .children(leader_border);
 7453
 7454        // Apply sizing only when the dock is open. When closed the dock is still
 7455        // included in the element tree so its focus handle remains mounted — without
 7456        // this, toggle_panel_focus cannot focus the panel when the dock is closed.
 7457        let dock = dock.read(cx);
 7458        if let Some(panel) = dock.visible_panel() {
 7459            let size_state = dock.stored_panel_size_state(panel.as_ref());
 7460            if position.axis() == Axis::Horizontal {
 7461                let use_flexible = panel.has_flexible_size(window, cx);
 7462                let flex_grow = if use_flexible {
 7463                    size_state
 7464                        .and_then(|state| state.flex)
 7465                        .or_else(|| self.default_dock_flex(position))
 7466                } else {
 7467                    None
 7468                };
 7469                if let Some(grow) = flex_grow {
 7470                    let grow = grow.max(0.001);
 7471                    let style = container.style();
 7472                    style.flex_grow = Some(grow);
 7473                    style.flex_shrink = Some(1.0);
 7474                    style.flex_basis = Some(relative(0.).into());
 7475                } else {
 7476                    let size = size_state
 7477                        .and_then(|state| state.size)
 7478                        .unwrap_or_else(|| panel.default_size(window, cx));
 7479                    container = container.w(size);
 7480                }
 7481            } else {
 7482                let size = size_state
 7483                    .and_then(|state| state.size)
 7484                    .unwrap_or_else(|| panel.default_size(window, cx));
 7485                container = container.h(size);
 7486            }
 7487        }
 7488
 7489        Some(container)
 7490    }
 7491
 7492    pub fn for_window(window: &Window, cx: &App) -> Option<Entity<Workspace>> {
 7493        window
 7494            .root::<MultiWorkspace>()
 7495            .flatten()
 7496            .map(|multi_workspace| multi_workspace.read(cx).workspace().clone())
 7497    }
 7498
 7499    pub fn zoomed_item(&self) -> Option<&AnyWeakView> {
 7500        self.zoomed.as_ref()
 7501    }
 7502
 7503    pub fn activate_next_window(&mut self, cx: &mut Context<Self>) {
 7504        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 7505            return;
 7506        };
 7507        let windows = cx.windows();
 7508        let next_window =
 7509            SystemWindowTabController::get_next_tab_group_window(cx, current_window_id).or_else(
 7510                || {
 7511                    windows
 7512                        .iter()
 7513                        .cycle()
 7514                        .skip_while(|window| window.window_id() != current_window_id)
 7515                        .nth(1)
 7516                },
 7517            );
 7518
 7519        if let Some(window) = next_window {
 7520            window
 7521                .update(cx, |_, window, _| window.activate_window())
 7522                .ok();
 7523        }
 7524    }
 7525
 7526    pub fn activate_previous_window(&mut self, cx: &mut Context<Self>) {
 7527        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 7528            return;
 7529        };
 7530        let windows = cx.windows();
 7531        let prev_window =
 7532            SystemWindowTabController::get_prev_tab_group_window(cx, current_window_id).or_else(
 7533                || {
 7534                    windows
 7535                        .iter()
 7536                        .rev()
 7537                        .cycle()
 7538                        .skip_while(|window| window.window_id() != current_window_id)
 7539                        .nth(1)
 7540                },
 7541            );
 7542
 7543        if let Some(window) = prev_window {
 7544            window
 7545                .update(cx, |_, window, _| window.activate_window())
 7546                .ok();
 7547        }
 7548    }
 7549
 7550    pub fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
 7551        if cx.stop_active_drag(window) {
 7552        } else if let Some((notification_id, _)) = self.notifications.pop() {
 7553            dismiss_app_notification(&notification_id, cx);
 7554        } else {
 7555            cx.propagate();
 7556        }
 7557    }
 7558
 7559    fn resize_dock(
 7560        &mut self,
 7561        dock_pos: DockPosition,
 7562        new_size: Pixels,
 7563        window: &mut Window,
 7564        cx: &mut Context<Self>,
 7565    ) {
 7566        match dock_pos {
 7567            DockPosition::Left => self.resize_left_dock(new_size, window, cx),
 7568            DockPosition::Right => self.resize_right_dock(new_size, window, cx),
 7569            DockPosition::Bottom => self.resize_bottom_dock(new_size, window, cx),
 7570        }
 7571    }
 7572
 7573    fn resize_left_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 7574        let workspace_width = self.bounds.size.width;
 7575        let mut size = new_size.min(workspace_width - RESIZE_HANDLE_SIZE);
 7576
 7577        self.right_dock.read_with(cx, |right_dock, cx| {
 7578            let right_dock_size = right_dock
 7579                .stored_active_panel_size(window, cx)
 7580                .unwrap_or(Pixels::ZERO);
 7581            if right_dock_size + size > workspace_width {
 7582                size = workspace_width - right_dock_size
 7583            }
 7584        });
 7585
 7586        let flex_grow = self.dock_flex_for_size(DockPosition::Left, size, window, cx);
 7587        self.left_dock.update(cx, |left_dock, cx| {
 7588            if WorkspaceSettings::get_global(cx)
 7589                .resize_all_panels_in_dock
 7590                .contains(&DockPosition::Left)
 7591            {
 7592                left_dock.resize_all_panels(Some(size), flex_grow, window, cx);
 7593            } else {
 7594                left_dock.resize_active_panel(Some(size), flex_grow, window, cx);
 7595            }
 7596        });
 7597    }
 7598
 7599    fn resize_right_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 7600        let workspace_width = self.bounds.size.width;
 7601        let mut size = new_size.min(workspace_width - RESIZE_HANDLE_SIZE);
 7602        self.left_dock.read_with(cx, |left_dock, cx| {
 7603            let left_dock_size = left_dock
 7604                .stored_active_panel_size(window, cx)
 7605                .unwrap_or(Pixels::ZERO);
 7606            if left_dock_size + size > workspace_width {
 7607                size = workspace_width - left_dock_size
 7608            }
 7609        });
 7610        let flex_grow = self.dock_flex_for_size(DockPosition::Right, size, window, cx);
 7611        self.right_dock.update(cx, |right_dock, cx| {
 7612            if WorkspaceSettings::get_global(cx)
 7613                .resize_all_panels_in_dock
 7614                .contains(&DockPosition::Right)
 7615            {
 7616                right_dock.resize_all_panels(Some(size), flex_grow, window, cx);
 7617            } else {
 7618                right_dock.resize_active_panel(Some(size), flex_grow, window, cx);
 7619            }
 7620        });
 7621    }
 7622
 7623    fn resize_bottom_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 7624        let size = new_size.min(self.bounds.bottom() - RESIZE_HANDLE_SIZE - self.bounds.top());
 7625        self.bottom_dock.update(cx, |bottom_dock, cx| {
 7626            if WorkspaceSettings::get_global(cx)
 7627                .resize_all_panels_in_dock
 7628                .contains(&DockPosition::Bottom)
 7629            {
 7630                bottom_dock.resize_all_panels(Some(size), None, window, cx);
 7631            } else {
 7632                bottom_dock.resize_active_panel(Some(size), None, window, cx);
 7633            }
 7634        });
 7635    }
 7636
 7637    fn toggle_edit_predictions_all_files(
 7638        &mut self,
 7639        _: &ToggleEditPrediction,
 7640        _window: &mut Window,
 7641        cx: &mut Context<Self>,
 7642    ) {
 7643        let fs = self.project().read(cx).fs().clone();
 7644        let show_edit_predictions = all_language_settings(None, cx).show_edit_predictions(None, cx);
 7645        update_settings_file(fs, cx, move |file, _| {
 7646            file.project.all_languages.defaults.show_edit_predictions = Some(!show_edit_predictions)
 7647        });
 7648    }
 7649
 7650    fn toggle_theme_mode(&mut self, _: &ToggleMode, _window: &mut Window, cx: &mut Context<Self>) {
 7651        let current_mode = ThemeSettings::get_global(cx).theme.mode();
 7652        let next_mode = match current_mode {
 7653            Some(theme_settings::ThemeAppearanceMode::Light) => {
 7654                theme_settings::ThemeAppearanceMode::Dark
 7655            }
 7656            Some(theme_settings::ThemeAppearanceMode::Dark) => {
 7657                theme_settings::ThemeAppearanceMode::Light
 7658            }
 7659            Some(theme_settings::ThemeAppearanceMode::System) | None => {
 7660                match cx.theme().appearance() {
 7661                    theme::Appearance::Light => theme_settings::ThemeAppearanceMode::Dark,
 7662                    theme::Appearance::Dark => theme_settings::ThemeAppearanceMode::Light,
 7663                }
 7664            }
 7665        };
 7666
 7667        let fs = self.project().read(cx).fs().clone();
 7668        settings::update_settings_file(fs, cx, move |settings, _cx| {
 7669            theme_settings::set_mode(settings, next_mode);
 7670        });
 7671    }
 7672
 7673    pub fn show_worktree_trust_security_modal(
 7674        &mut self,
 7675        toggle: bool,
 7676        window: &mut Window,
 7677        cx: &mut Context<Self>,
 7678    ) {
 7679        if let Some(security_modal) = self.active_modal::<SecurityModal>(cx) {
 7680            if toggle {
 7681                security_modal.update(cx, |security_modal, cx| {
 7682                    security_modal.dismiss(cx);
 7683                })
 7684            } else {
 7685                security_modal.update(cx, |security_modal, cx| {
 7686                    security_modal.refresh_restricted_paths(cx);
 7687                });
 7688            }
 7689        } else {
 7690            let has_restricted_worktrees = TrustedWorktrees::try_get_global(cx)
 7691                .map(|trusted_worktrees| {
 7692                    trusted_worktrees
 7693                        .read(cx)
 7694                        .has_restricted_worktrees(&self.project().read(cx).worktree_store(), cx)
 7695                })
 7696                .unwrap_or(false);
 7697            if has_restricted_worktrees {
 7698                let project = self.project().read(cx);
 7699                let remote_host = project
 7700                    .remote_connection_options(cx)
 7701                    .map(RemoteHostLocation::from);
 7702                let worktree_store = project.worktree_store().downgrade();
 7703                self.toggle_modal(window, cx, |_, cx| {
 7704                    SecurityModal::new(worktree_store, remote_host, cx)
 7705                });
 7706            }
 7707        }
 7708    }
 7709}
 7710
 7711pub trait AnyActiveCall {
 7712    fn entity(&self) -> AnyEntity;
 7713    fn is_in_room(&self, _: &App) -> bool;
 7714    fn room_id(&self, _: &App) -> Option<u64>;
 7715    fn channel_id(&self, _: &App) -> Option<ChannelId>;
 7716    fn hang_up(&self, _: &mut App) -> Task<Result<()>>;
 7717    fn unshare_project(&self, _: Entity<Project>, _: &mut App) -> Result<()>;
 7718    fn remote_participant_for_peer_id(&self, _: PeerId, _: &App) -> Option<RemoteCollaborator>;
 7719    fn is_sharing_project(&self, _: &App) -> bool;
 7720    fn has_remote_participants(&self, _: &App) -> bool;
 7721    fn local_participant_is_guest(&self, _: &App) -> bool;
 7722    fn client(&self, _: &App) -> Arc<Client>;
 7723    fn share_on_join(&self, _: &App) -> bool;
 7724    fn join_channel(&self, _: ChannelId, _: &mut App) -> Task<Result<bool>>;
 7725    fn room_update_completed(&self, _: &mut App) -> Task<()>;
 7726    fn most_active_project(&self, _: &App) -> Option<(u64, u64)>;
 7727    fn share_project(&self, _: Entity<Project>, _: &mut App) -> Task<Result<u64>>;
 7728    fn join_project(
 7729        &self,
 7730        _: u64,
 7731        _: Arc<LanguageRegistry>,
 7732        _: Arc<dyn Fs>,
 7733        _: &mut App,
 7734    ) -> Task<Result<Entity<Project>>>;
 7735    fn peer_id_for_user_in_room(&self, _: u64, _: &App) -> Option<PeerId>;
 7736    fn subscribe(
 7737        &self,
 7738        _: &mut Window,
 7739        _: &mut Context<Workspace>,
 7740        _: Box<dyn Fn(&mut Workspace, &ActiveCallEvent, &mut Window, &mut Context<Workspace>)>,
 7741    ) -> Subscription;
 7742    fn create_shared_screen(
 7743        &self,
 7744        _: PeerId,
 7745        _: &Entity<Pane>,
 7746        _: &mut Window,
 7747        _: &mut App,
 7748    ) -> Option<Entity<SharedScreen>>;
 7749}
 7750
 7751#[derive(Clone)]
 7752pub struct GlobalAnyActiveCall(pub Arc<dyn AnyActiveCall>);
 7753impl Global for GlobalAnyActiveCall {}
 7754
 7755impl GlobalAnyActiveCall {
 7756    pub(crate) fn try_global(cx: &App) -> Option<&Self> {
 7757        cx.try_global()
 7758    }
 7759
 7760    pub(crate) fn global(cx: &App) -> &Self {
 7761        cx.global()
 7762    }
 7763}
 7764
 7765/// Workspace-local view of a remote participant's location.
 7766#[derive(Clone, Copy, Debug, PartialEq, Eq)]
 7767pub enum ParticipantLocation {
 7768    SharedProject { project_id: u64 },
 7769    UnsharedProject,
 7770    External,
 7771}
 7772
 7773impl ParticipantLocation {
 7774    pub fn from_proto(location: Option<proto::ParticipantLocation>) -> Result<Self> {
 7775        match location
 7776            .and_then(|l| l.variant)
 7777            .context("participant location was not provided")?
 7778        {
 7779            proto::participant_location::Variant::SharedProject(project) => {
 7780                Ok(Self::SharedProject {
 7781                    project_id: project.id,
 7782                })
 7783            }
 7784            proto::participant_location::Variant::UnsharedProject(_) => Ok(Self::UnsharedProject),
 7785            proto::participant_location::Variant::External(_) => Ok(Self::External),
 7786        }
 7787    }
 7788}
 7789/// Workspace-local view of a remote collaborator's state.
 7790/// This is the subset of `call::RemoteParticipant` that workspace needs.
 7791#[derive(Clone)]
 7792pub struct RemoteCollaborator {
 7793    pub user: Arc<User>,
 7794    pub peer_id: PeerId,
 7795    pub location: ParticipantLocation,
 7796    pub participant_index: ParticipantIndex,
 7797}
 7798
 7799pub enum ActiveCallEvent {
 7800    ParticipantLocationChanged { participant_id: PeerId },
 7801    RemoteVideoTracksChanged { participant_id: PeerId },
 7802}
 7803
 7804fn leader_border_for_pane(
 7805    follower_states: &HashMap<CollaboratorId, FollowerState>,
 7806    pane: &Entity<Pane>,
 7807    _: &Window,
 7808    cx: &App,
 7809) -> Option<Div> {
 7810    let (leader_id, _follower_state) = follower_states.iter().find_map(|(leader_id, state)| {
 7811        if state.pane() == pane {
 7812            Some((*leader_id, state))
 7813        } else {
 7814            None
 7815        }
 7816    })?;
 7817
 7818    let mut leader_color = match leader_id {
 7819        CollaboratorId::PeerId(leader_peer_id) => {
 7820            let leader = GlobalAnyActiveCall::try_global(cx)?
 7821                .0
 7822                .remote_participant_for_peer_id(leader_peer_id, cx)?;
 7823
 7824            cx.theme()
 7825                .players()
 7826                .color_for_participant(leader.participant_index.0)
 7827                .cursor
 7828        }
 7829        CollaboratorId::Agent => cx.theme().players().agent().cursor,
 7830    };
 7831    leader_color.fade_out(0.3);
 7832    Some(
 7833        div()
 7834            .absolute()
 7835            .size_full()
 7836            .left_0()
 7837            .top_0()
 7838            .border_2()
 7839            .border_color(leader_color),
 7840    )
 7841}
 7842
 7843fn window_bounds_env_override() -> Option<Bounds<Pixels>> {
 7844    ZED_WINDOW_POSITION
 7845        .zip(*ZED_WINDOW_SIZE)
 7846        .map(|(position, size)| Bounds {
 7847            origin: position,
 7848            size,
 7849        })
 7850}
 7851
 7852fn open_items(
 7853    serialized_workspace: Option<SerializedWorkspace>,
 7854    mut project_paths_to_open: Vec<(PathBuf, Option<ProjectPath>)>,
 7855    window: &mut Window,
 7856    cx: &mut Context<Workspace>,
 7857) -> impl 'static + Future<Output = Result<Vec<Option<Result<Box<dyn ItemHandle>>>>>> + use<> {
 7858    let restored_items = serialized_workspace.map(|serialized_workspace| {
 7859        Workspace::load_workspace(
 7860            serialized_workspace,
 7861            project_paths_to_open
 7862                .iter()
 7863                .map(|(_, project_path)| project_path)
 7864                .cloned()
 7865                .collect(),
 7866            window,
 7867            cx,
 7868        )
 7869    });
 7870
 7871    cx.spawn_in(window, async move |workspace, cx| {
 7872        let mut opened_items = Vec::with_capacity(project_paths_to_open.len());
 7873
 7874        if let Some(restored_items) = restored_items {
 7875            let restored_items = restored_items.await?;
 7876
 7877            let restored_project_paths = restored_items
 7878                .iter()
 7879                .filter_map(|item| {
 7880                    cx.update(|_, cx| item.as_ref()?.project_path(cx))
 7881                        .ok()
 7882                        .flatten()
 7883                })
 7884                .collect::<HashSet<_>>();
 7885
 7886            for restored_item in restored_items {
 7887                opened_items.push(restored_item.map(Ok));
 7888            }
 7889
 7890            project_paths_to_open
 7891                .iter_mut()
 7892                .for_each(|(_, project_path)| {
 7893                    if let Some(project_path_to_open) = project_path
 7894                        && restored_project_paths.contains(project_path_to_open)
 7895                    {
 7896                        *project_path = None;
 7897                    }
 7898                });
 7899        } else {
 7900            for _ in 0..project_paths_to_open.len() {
 7901                opened_items.push(None);
 7902            }
 7903        }
 7904        assert!(opened_items.len() == project_paths_to_open.len());
 7905
 7906        let tasks =
 7907            project_paths_to_open
 7908                .into_iter()
 7909                .enumerate()
 7910                .map(|(ix, (abs_path, project_path))| {
 7911                    let workspace = workspace.clone();
 7912                    cx.spawn(async move |cx| {
 7913                        let file_project_path = project_path?;
 7914                        let abs_path_task = workspace.update(cx, |workspace, cx| {
 7915                            workspace.project().update(cx, |project, cx| {
 7916                                project.resolve_abs_path(abs_path.to_string_lossy().as_ref(), cx)
 7917                            })
 7918                        });
 7919
 7920                        // We only want to open file paths here. If one of the items
 7921                        // here is a directory, it was already opened further above
 7922                        // with a `find_or_create_worktree`.
 7923                        if let Ok(task) = abs_path_task
 7924                            && task.await.is_none_or(|p| p.is_file())
 7925                        {
 7926                            return Some((
 7927                                ix,
 7928                                workspace
 7929                                    .update_in(cx, |workspace, window, cx| {
 7930                                        workspace.open_path(
 7931                                            file_project_path,
 7932                                            None,
 7933                                            true,
 7934                                            window,
 7935                                            cx,
 7936                                        )
 7937                                    })
 7938                                    .log_err()?
 7939                                    .await,
 7940                            ));
 7941                        }
 7942                        None
 7943                    })
 7944                });
 7945
 7946        let tasks = tasks.collect::<Vec<_>>();
 7947
 7948        let tasks = futures::future::join_all(tasks);
 7949        for (ix, path_open_result) in tasks.await.into_iter().flatten() {
 7950            opened_items[ix] = Some(path_open_result);
 7951        }
 7952
 7953        Ok(opened_items)
 7954    })
 7955}
 7956
 7957#[derive(Clone)]
 7958enum ActivateInDirectionTarget {
 7959    Pane(Entity<Pane>),
 7960    Dock(Entity<Dock>),
 7961    Sidebar(FocusHandle),
 7962}
 7963
 7964fn notify_if_database_failed(window: WindowHandle<MultiWorkspace>, cx: &mut AsyncApp) {
 7965    window
 7966        .update(cx, |multi_workspace, _, cx| {
 7967            let workspace = multi_workspace.workspace().clone();
 7968            workspace.update(cx, |workspace, cx| {
 7969                if (*db::ALL_FILE_DB_FAILED).load(std::sync::atomic::Ordering::Acquire) {
 7970                    struct DatabaseFailedNotification;
 7971
 7972                    workspace.show_notification(
 7973                        NotificationId::unique::<DatabaseFailedNotification>(),
 7974                        cx,
 7975                        |cx| {
 7976                            cx.new(|cx| {
 7977                                MessageNotification::new("Failed to load the database file.", cx)
 7978                                    .primary_message("File an Issue")
 7979                                    .primary_icon(IconName::Plus)
 7980                                    .primary_on_click(|window, cx| {
 7981                                        window.dispatch_action(Box::new(FileBugReport), cx)
 7982                                    })
 7983                            })
 7984                        },
 7985                    );
 7986                }
 7987            });
 7988        })
 7989        .log_err();
 7990}
 7991
 7992fn px_with_ui_font_fallback(val: u32, cx: &Context<Workspace>) -> Pixels {
 7993    if val == 0 {
 7994        ThemeSettings::get_global(cx).ui_font_size(cx)
 7995    } else {
 7996        px(val as f32)
 7997    }
 7998}
 7999
 8000fn adjust_active_dock_size_by_px(
 8001    px: Pixels,
 8002    workspace: &mut Workspace,
 8003    window: &mut Window,
 8004    cx: &mut Context<Workspace>,
 8005) {
 8006    let Some(active_dock) = workspace
 8007        .all_docks()
 8008        .into_iter()
 8009        .find(|dock| dock.focus_handle(cx).contains_focused(window, cx))
 8010    else {
 8011        return;
 8012    };
 8013    let dock = active_dock.read(cx);
 8014    let Some(panel_size) = workspace.dock_size(&dock, window, cx) else {
 8015        return;
 8016    };
 8017    workspace.resize_dock(dock.position(), panel_size + px, window, cx);
 8018}
 8019
 8020fn adjust_open_docks_size_by_px(
 8021    px: Pixels,
 8022    workspace: &mut Workspace,
 8023    window: &mut Window,
 8024    cx: &mut Context<Workspace>,
 8025) {
 8026    let docks = workspace
 8027        .all_docks()
 8028        .into_iter()
 8029        .filter_map(|dock_entity| {
 8030            let dock = dock_entity.read(cx);
 8031            if dock.is_open() {
 8032                let dock_pos = dock.position();
 8033                let panel_size = workspace.dock_size(&dock, window, cx)?;
 8034                Some((dock_pos, panel_size + px))
 8035            } else {
 8036                None
 8037            }
 8038        })
 8039        .collect::<Vec<_>>();
 8040
 8041    for (position, new_size) in docks {
 8042        workspace.resize_dock(position, new_size, window, cx);
 8043    }
 8044}
 8045
 8046impl Focusable for Workspace {
 8047    fn focus_handle(&self, cx: &App) -> FocusHandle {
 8048        self.active_pane.focus_handle(cx)
 8049    }
 8050}
 8051
 8052#[derive(Clone)]
 8053struct DraggedDock(DockPosition);
 8054
 8055impl Render for DraggedDock {
 8056    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
 8057        gpui::Empty
 8058    }
 8059}
 8060
 8061impl Render for Workspace {
 8062    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 8063        static FIRST_PAINT: AtomicBool = AtomicBool::new(true);
 8064        if FIRST_PAINT.swap(false, std::sync::atomic::Ordering::Relaxed) {
 8065            log::info!("Rendered first frame");
 8066        }
 8067
 8068        let centered_layout = self.centered_layout
 8069            && self.center.panes().len() == 1
 8070            && self.active_item(cx).is_some();
 8071        let render_padding = |size| {
 8072            (size > 0.0).then(|| {
 8073                div()
 8074                    .h_full()
 8075                    .w(relative(size))
 8076                    .bg(cx.theme().colors().editor_background)
 8077                    .border_color(cx.theme().colors().pane_group_border)
 8078            })
 8079        };
 8080        let paddings = if centered_layout {
 8081            let settings = WorkspaceSettings::get_global(cx).centered_layout;
 8082            (
 8083                render_padding(Self::adjust_padding(
 8084                    settings.left_padding.map(|padding| padding.0),
 8085                )),
 8086                render_padding(Self::adjust_padding(
 8087                    settings.right_padding.map(|padding| padding.0),
 8088                )),
 8089            )
 8090        } else {
 8091            (None, None)
 8092        };
 8093        let ui_font = theme_settings::setup_ui_font(window, cx);
 8094
 8095        let theme = cx.theme().clone();
 8096        let colors = theme.colors();
 8097        let notification_entities = self
 8098            .notifications
 8099            .iter()
 8100            .map(|(_, notification)| notification.entity_id())
 8101            .collect::<Vec<_>>();
 8102        let bottom_dock_layout = WorkspaceSettings::get_global(cx).bottom_dock_layout;
 8103
 8104        div()
 8105            .relative()
 8106            .size_full()
 8107            .flex()
 8108            .flex_col()
 8109            .font(ui_font)
 8110            .gap_0()
 8111                .justify_start()
 8112                .items_start()
 8113                .text_color(colors.text)
 8114                .overflow_hidden()
 8115                .children(self.titlebar_item.clone())
 8116                .on_modifiers_changed(move |_, _, cx| {
 8117                    for &id in &notification_entities {
 8118                        cx.notify(id);
 8119                    }
 8120                })
 8121                .child(
 8122                    div()
 8123                        .size_full()
 8124                        .relative()
 8125                        .flex_1()
 8126                        .flex()
 8127                        .flex_col()
 8128                        .child(
 8129                            div()
 8130                                .id("workspace")
 8131                                .bg(colors.background)
 8132                                .relative()
 8133                                .flex_1()
 8134                                .w_full()
 8135                                .flex()
 8136                                .flex_col()
 8137                                .overflow_hidden()
 8138                                .border_t_1()
 8139                                .border_b_1()
 8140                                .border_color(colors.border)
 8141                                .child({
 8142                                    let this = cx.entity();
 8143                                    canvas(
 8144                                        move |bounds, window, cx| {
 8145                                            this.update(cx, |this, cx| {
 8146                                                let bounds_changed = this.bounds != bounds;
 8147                                                this.bounds = bounds;
 8148
 8149                                                if bounds_changed {
 8150                                                    this.left_dock.update(cx, |dock, cx| {
 8151                                                        dock.clamp_panel_size(
 8152                                                            bounds.size.width,
 8153                                                            window,
 8154                                                            cx,
 8155                                                        )
 8156                                                    });
 8157
 8158                                                    this.right_dock.update(cx, |dock, cx| {
 8159                                                        dock.clamp_panel_size(
 8160                                                            bounds.size.width,
 8161                                                            window,
 8162                                                            cx,
 8163                                                        )
 8164                                                    });
 8165
 8166                                                    this.bottom_dock.update(cx, |dock, cx| {
 8167                                                        dock.clamp_panel_size(
 8168                                                            bounds.size.height,
 8169                                                            window,
 8170                                                            cx,
 8171                                                        )
 8172                                                    });
 8173                                                }
 8174                                            })
 8175                                        },
 8176                                        |_, _, _, _| {},
 8177                                    )
 8178                                    .absolute()
 8179                                    .size_full()
 8180                                })
 8181                                .when(self.zoomed.is_none(), |this| {
 8182                                    this.on_drag_move(cx.listener(
 8183                                        move |workspace,
 8184                                              e: &DragMoveEvent<DraggedDock>,
 8185                                              window,
 8186                                              cx| {
 8187                                            if workspace.previous_dock_drag_coordinates
 8188                                                != Some(e.event.position)
 8189                                            {
 8190                                                workspace.previous_dock_drag_coordinates =
 8191                                                    Some(e.event.position);
 8192
 8193                                                match e.drag(cx).0 {
 8194                                                    DockPosition::Left => {
 8195                                                        workspace.resize_left_dock(
 8196                                                            e.event.position.x
 8197                                                                - workspace.bounds.left(),
 8198                                                            window,
 8199                                                            cx,
 8200                                                        );
 8201                                                    }
 8202                                                    DockPosition::Right => {
 8203                                                        workspace.resize_right_dock(
 8204                                                            workspace.bounds.right()
 8205                                                                - e.event.position.x,
 8206                                                            window,
 8207                                                            cx,
 8208                                                        );
 8209                                                    }
 8210                                                    DockPosition::Bottom => {
 8211                                                        workspace.resize_bottom_dock(
 8212                                                            workspace.bounds.bottom()
 8213                                                                - e.event.position.y,
 8214                                                            window,
 8215                                                            cx,
 8216                                                        );
 8217                                                    }
 8218                                                };
 8219                                                workspace.serialize_workspace(window, cx);
 8220                                            }
 8221                                        },
 8222                                    ))
 8223
 8224                                })
 8225                                .child({
 8226                                    match bottom_dock_layout {
 8227                                        BottomDockLayout::Full => div()
 8228                                            .flex()
 8229                                            .flex_col()
 8230                                            .h_full()
 8231                                            .child(
 8232                                                div()
 8233                                                    .flex()
 8234                                                    .flex_row()
 8235                                                    .flex_1()
 8236                                                    .overflow_hidden()
 8237                                                    .children(self.render_dock(
 8238                                                        DockPosition::Left,
 8239                                                        &self.left_dock,
 8240                                                        window,
 8241                                                        cx,
 8242                                                    ))
 8243
 8244                                                    .child(
 8245                                                        div()
 8246                                                            .flex()
 8247                                                            .flex_col()
 8248                                                            .flex_1()
 8249                                                            .overflow_hidden()
 8250                                                            .child(
 8251                                                                h_flex()
 8252                                                                    .flex_1()
 8253                                                                    .when_some(
 8254                                                                        paddings.0,
 8255                                                                        |this, p| {
 8256                                                                            this.child(
 8257                                                                                p.border_r_1(),
 8258                                                                            )
 8259                                                                        },
 8260                                                                    )
 8261                                                                    .child(self.center.render(
 8262                                                                        self.zoomed.as_ref(),
 8263                                                                        &PaneRenderContext {
 8264                                                                            follower_states:
 8265                                                                                &self.follower_states,
 8266                                                                            active_call: self.active_call(),
 8267                                                                            active_pane: &self.active_pane,
 8268                                                                            app_state: &self.app_state,
 8269                                                                            project: &self.project,
 8270                                                                            workspace: &self.weak_self,
 8271                                                                        },
 8272                                                                        window,
 8273                                                                        cx,
 8274                                                                    ))
 8275                                                                    .when_some(
 8276                                                                        paddings.1,
 8277                                                                        |this, p| {
 8278                                                                            this.child(
 8279                                                                                p.border_l_1(),
 8280                                                                            )
 8281                                                                        },
 8282                                                                    ),
 8283                                                            ),
 8284                                                    )
 8285
 8286                                                    .children(self.render_dock(
 8287                                                        DockPosition::Right,
 8288                                                        &self.right_dock,
 8289                                                        window,
 8290                                                        cx,
 8291                                                    )),
 8292                                            )
 8293                                            .child(div().w_full().children(self.render_dock(
 8294                                                DockPosition::Bottom,
 8295                                                &self.bottom_dock,
 8296                                                window,
 8297                                                cx
 8298                                            ))),
 8299
 8300                                        BottomDockLayout::LeftAligned => div()
 8301                                            .flex()
 8302                                            .flex_row()
 8303                                            .h_full()
 8304                                            .child(
 8305                                                div()
 8306                                                    .flex()
 8307                                                    .flex_col()
 8308                                                    .flex_1()
 8309                                                    .h_full()
 8310                                                    .child(
 8311                                                        div()
 8312                                                            .flex()
 8313                                                            .flex_row()
 8314                                                            .flex_1()
 8315                                                            .children(self.render_dock(DockPosition::Left, &self.left_dock, window, cx))
 8316
 8317                                                            .child(
 8318                                                                div()
 8319                                                                    .flex()
 8320                                                                    .flex_col()
 8321                                                                    .flex_1()
 8322                                                                    .overflow_hidden()
 8323                                                                    .child(
 8324                                                                        h_flex()
 8325                                                                            .flex_1()
 8326                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 8327                                                                            .child(self.center.render(
 8328                                                                                self.zoomed.as_ref(),
 8329                                                                                &PaneRenderContext {
 8330                                                                                    follower_states:
 8331                                                                                        &self.follower_states,
 8332                                                                                    active_call: self.active_call(),
 8333                                                                                    active_pane: &self.active_pane,
 8334                                                                                    app_state: &self.app_state,
 8335                                                                                    project: &self.project,
 8336                                                                                    workspace: &self.weak_self,
 8337                                                                                },
 8338                                                                                window,
 8339                                                                                cx,
 8340                                                                            ))
 8341                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 8342                                                                    )
 8343                                                            )
 8344
 8345                                                    )
 8346                                                    .child(
 8347                                                        div()
 8348                                                            .w_full()
 8349                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 8350                                                    ),
 8351                                            )
 8352                                            .children(self.render_dock(
 8353                                                DockPosition::Right,
 8354                                                &self.right_dock,
 8355                                                window,
 8356                                                cx,
 8357                                            )),
 8358                                        BottomDockLayout::RightAligned => div()
 8359                                            .flex()
 8360                                            .flex_row()
 8361                                            .h_full()
 8362                                            .children(self.render_dock(
 8363                                                DockPosition::Left,
 8364                                                &self.left_dock,
 8365                                                window,
 8366                                                cx,
 8367                                            ))
 8368
 8369                                            .child(
 8370                                                div()
 8371                                                    .flex()
 8372                                                    .flex_col()
 8373                                                    .flex_1()
 8374                                                    .h_full()
 8375                                                    .child(
 8376                                                        div()
 8377                                                            .flex()
 8378                                                            .flex_row()
 8379                                                            .flex_1()
 8380                                                            .child(
 8381                                                                div()
 8382                                                                    .flex()
 8383                                                                    .flex_col()
 8384                                                                    .flex_1()
 8385                                                                    .overflow_hidden()
 8386                                                                    .child(
 8387                                                                        h_flex()
 8388                                                                            .flex_1()
 8389                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 8390                                                                            .child(self.center.render(
 8391                                                                                self.zoomed.as_ref(),
 8392                                                                                &PaneRenderContext {
 8393                                                                                    follower_states:
 8394                                                                                        &self.follower_states,
 8395                                                                                    active_call: self.active_call(),
 8396                                                                                    active_pane: &self.active_pane,
 8397                                                                                    app_state: &self.app_state,
 8398                                                                                    project: &self.project,
 8399                                                                                    workspace: &self.weak_self,
 8400                                                                                },
 8401                                                                                window,
 8402                                                                                cx,
 8403                                                                            ))
 8404                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 8405                                                                    )
 8406                                                            )
 8407
 8408                                                            .children(self.render_dock(DockPosition::Right, &self.right_dock, window, cx))
 8409                                                    )
 8410                                                    .child(
 8411                                                        div()
 8412                                                            .w_full()
 8413                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 8414                                                    ),
 8415                                            ),
 8416                                        BottomDockLayout::Contained => div()
 8417                                            .flex()
 8418                                            .flex_row()
 8419                                            .h_full()
 8420                                            .children(self.render_dock(
 8421                                                DockPosition::Left,
 8422                                                &self.left_dock,
 8423                                                window,
 8424                                                cx,
 8425                                            ))
 8426
 8427                                            .child(
 8428                                                div()
 8429                                                    .flex()
 8430                                                    .flex_col()
 8431                                                    .flex_1()
 8432                                                    .overflow_hidden()
 8433                                                    .child(
 8434                                                        h_flex()
 8435                                                            .flex_1()
 8436                                                            .when_some(paddings.0, |this, p| {
 8437                                                                this.child(p.border_r_1())
 8438                                                            })
 8439                                                            .child(self.center.render(
 8440                                                                self.zoomed.as_ref(),
 8441                                                                &PaneRenderContext {
 8442                                                                    follower_states:
 8443                                                                        &self.follower_states,
 8444                                                                    active_call: self.active_call(),
 8445                                                                    active_pane: &self.active_pane,
 8446                                                                    app_state: &self.app_state,
 8447                                                                    project: &self.project,
 8448                                                                    workspace: &self.weak_self,
 8449                                                                },
 8450                                                                window,
 8451                                                                cx,
 8452                                                            ))
 8453                                                            .when_some(paddings.1, |this, p| {
 8454                                                                this.child(p.border_l_1())
 8455                                                            }),
 8456                                                    )
 8457                                                    .children(self.render_dock(
 8458                                                        DockPosition::Bottom,
 8459                                                        &self.bottom_dock,
 8460                                                        window,
 8461                                                        cx,
 8462                                                    )),
 8463                                            )
 8464
 8465                                            .children(self.render_dock(
 8466                                                DockPosition::Right,
 8467                                                &self.right_dock,
 8468                                                window,
 8469                                                cx,
 8470                                            )),
 8471                                    }
 8472                                })
 8473                                .children(self.zoomed.as_ref().and_then(|view| {
 8474                                    let zoomed_view = view.upgrade()?;
 8475                                    let div = div()
 8476                                        .occlude()
 8477                                        .absolute()
 8478                                        .overflow_hidden()
 8479                                        .border_color(colors.border)
 8480                                        .bg(colors.background)
 8481                                        .child(zoomed_view)
 8482                                        .inset_0()
 8483                                        .shadow_lg();
 8484
 8485                                    if !WorkspaceSettings::get_global(cx).zoomed_padding {
 8486                                       return Some(div);
 8487                                    }
 8488
 8489                                    Some(match self.zoomed_position {
 8490                                        Some(DockPosition::Left) => div.right_2().border_r_1(),
 8491                                        Some(DockPosition::Right) => div.left_2().border_l_1(),
 8492                                        Some(DockPosition::Bottom) => div.top_2().border_t_1(),
 8493                                        None => {
 8494                                            div.top_2().bottom_2().left_2().right_2().border_1()
 8495                                        }
 8496                                    })
 8497                                }))
 8498                                .children(self.render_notifications(window, cx)),
 8499                        )
 8500                        .when(self.status_bar_visible(cx), |parent| {
 8501                            parent.child(self.status_bar.clone())
 8502                        })
 8503                        .child(self.toast_layer.clone()),
 8504                )
 8505    }
 8506}
 8507
 8508impl WorkspaceStore {
 8509    pub fn new(client: Arc<Client>, cx: &mut Context<Self>) -> Self {
 8510        Self {
 8511            workspaces: Default::default(),
 8512            _subscriptions: vec![
 8513                client.add_request_handler(cx.weak_entity(), Self::handle_follow),
 8514                client.add_message_handler(cx.weak_entity(), Self::handle_update_followers),
 8515            ],
 8516            client,
 8517        }
 8518    }
 8519
 8520    pub fn update_followers(
 8521        &self,
 8522        project_id: Option<u64>,
 8523        update: proto::update_followers::Variant,
 8524        cx: &App,
 8525    ) -> Option<()> {
 8526        let active_call = GlobalAnyActiveCall::try_global(cx)?;
 8527        let room_id = active_call.0.room_id(cx)?;
 8528        self.client
 8529            .send(proto::UpdateFollowers {
 8530                room_id,
 8531                project_id,
 8532                variant: Some(update),
 8533            })
 8534            .log_err()
 8535    }
 8536
 8537    pub async fn handle_follow(
 8538        this: Entity<Self>,
 8539        envelope: TypedEnvelope<proto::Follow>,
 8540        mut cx: AsyncApp,
 8541    ) -> Result<proto::FollowResponse> {
 8542        this.update(&mut cx, |this, cx| {
 8543            let follower = Follower {
 8544                project_id: envelope.payload.project_id,
 8545                peer_id: envelope.original_sender_id()?,
 8546            };
 8547
 8548            let mut response = proto::FollowResponse::default();
 8549
 8550            this.workspaces.retain(|(window_handle, weak_workspace)| {
 8551                let Some(workspace) = weak_workspace.upgrade() else {
 8552                    return false;
 8553                };
 8554                window_handle
 8555                    .update(cx, |_, window, cx| {
 8556                        workspace.update(cx, |workspace, cx| {
 8557                            let handler_response =
 8558                                workspace.handle_follow(follower.project_id, window, cx);
 8559                            if let Some(active_view) = handler_response.active_view
 8560                                && workspace.project.read(cx).remote_id() == follower.project_id
 8561                            {
 8562                                response.active_view = Some(active_view)
 8563                            }
 8564                        });
 8565                    })
 8566                    .is_ok()
 8567            });
 8568
 8569            Ok(response)
 8570        })
 8571    }
 8572
 8573    async fn handle_update_followers(
 8574        this: Entity<Self>,
 8575        envelope: TypedEnvelope<proto::UpdateFollowers>,
 8576        mut cx: AsyncApp,
 8577    ) -> Result<()> {
 8578        let leader_id = envelope.original_sender_id()?;
 8579        let update = envelope.payload;
 8580
 8581        this.update(&mut cx, |this, cx| {
 8582            this.workspaces.retain(|(window_handle, weak_workspace)| {
 8583                let Some(workspace) = weak_workspace.upgrade() else {
 8584                    return false;
 8585                };
 8586                window_handle
 8587                    .update(cx, |_, window, cx| {
 8588                        workspace.update(cx, |workspace, cx| {
 8589                            let project_id = workspace.project.read(cx).remote_id();
 8590                            if update.project_id != project_id && update.project_id.is_some() {
 8591                                return;
 8592                            }
 8593                            workspace.handle_update_followers(
 8594                                leader_id,
 8595                                update.clone(),
 8596                                window,
 8597                                cx,
 8598                            );
 8599                        });
 8600                    })
 8601                    .is_ok()
 8602            });
 8603            Ok(())
 8604        })
 8605    }
 8606
 8607    pub fn workspaces(&self) -> impl Iterator<Item = &WeakEntity<Workspace>> {
 8608        self.workspaces.iter().map(|(_, weak)| weak)
 8609    }
 8610
 8611    pub fn workspaces_with_windows(
 8612        &self,
 8613    ) -> impl Iterator<Item = (gpui::AnyWindowHandle, &WeakEntity<Workspace>)> {
 8614        self.workspaces.iter().map(|(window, weak)| (*window, weak))
 8615    }
 8616}
 8617
 8618impl ViewId {
 8619    pub(crate) fn from_proto(message: proto::ViewId) -> Result<Self> {
 8620        Ok(Self {
 8621            creator: message
 8622                .creator
 8623                .map(CollaboratorId::PeerId)
 8624                .context("creator is missing")?,
 8625            id: message.id,
 8626        })
 8627    }
 8628
 8629    pub(crate) fn to_proto(self) -> Option<proto::ViewId> {
 8630        if let CollaboratorId::PeerId(peer_id) = self.creator {
 8631            Some(proto::ViewId {
 8632                creator: Some(peer_id),
 8633                id: self.id,
 8634            })
 8635        } else {
 8636            None
 8637        }
 8638    }
 8639}
 8640
 8641impl FollowerState {
 8642    fn pane(&self) -> &Entity<Pane> {
 8643        self.dock_pane.as_ref().unwrap_or(&self.center_pane)
 8644    }
 8645}
 8646
 8647pub trait WorkspaceHandle {
 8648    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath>;
 8649}
 8650
 8651impl WorkspaceHandle for Entity<Workspace> {
 8652    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath> {
 8653        self.read(cx)
 8654            .worktrees(cx)
 8655            .flat_map(|worktree| {
 8656                let worktree_id = worktree.read(cx).id();
 8657                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
 8658                    worktree_id,
 8659                    path: f.path.clone(),
 8660                })
 8661            })
 8662            .collect::<Vec<_>>()
 8663    }
 8664}
 8665
 8666pub async fn last_opened_workspace_location(
 8667    db: &WorkspaceDb,
 8668    fs: &dyn fs::Fs,
 8669) -> Option<(WorkspaceId, SerializedWorkspaceLocation, PathList)> {
 8670    db.last_workspace(fs)
 8671        .await
 8672        .log_err()
 8673        .flatten()
 8674        .map(|(id, location, paths, _timestamp)| (id, location, paths))
 8675}
 8676
 8677pub async fn last_session_workspace_locations(
 8678    db: &WorkspaceDb,
 8679    last_session_id: &str,
 8680    last_session_window_stack: Option<Vec<WindowId>>,
 8681    fs: &dyn fs::Fs,
 8682) -> Option<Vec<SessionWorkspace>> {
 8683    db.last_session_workspace_locations(last_session_id, last_session_window_stack, fs)
 8684        .await
 8685        .log_err()
 8686}
 8687
 8688pub async fn restore_multiworkspace(
 8689    multi_workspace: SerializedMultiWorkspace,
 8690    app_state: Arc<AppState>,
 8691    cx: &mut AsyncApp,
 8692) -> anyhow::Result<WindowHandle<MultiWorkspace>> {
 8693    let SerializedMultiWorkspace {
 8694        active_workspace,
 8695        state,
 8696    } = multi_workspace;
 8697
 8698    let workspace_result = if active_workspace.paths.is_empty() {
 8699        cx.update(|cx| {
 8700            open_workspace_by_id(active_workspace.workspace_id, app_state.clone(), None, cx)
 8701        })
 8702        .await
 8703    } else {
 8704        cx.update(|cx| {
 8705            Workspace::new_local(
 8706                active_workspace.paths.paths().to_vec(),
 8707                app_state.clone(),
 8708                None,
 8709                None,
 8710                None,
 8711                OpenMode::Activate,
 8712                cx,
 8713            )
 8714        })
 8715        .await
 8716        .map(|result| result.window)
 8717    };
 8718
 8719    let window_handle = match workspace_result {
 8720        Ok(handle) => handle,
 8721        Err(err) => {
 8722            log::error!("Failed to restore active workspace: {err:#}");
 8723
 8724            let mut fallback_handle = None;
 8725            for key in &state.project_group_keys {
 8726                let key: ProjectGroupKey = key.clone().into();
 8727                let paths = key.path_list().paths().to_vec();
 8728                match cx
 8729                    .update(|cx| {
 8730                        Workspace::new_local(
 8731                            paths,
 8732                            app_state.clone(),
 8733                            None,
 8734                            None,
 8735                            None,
 8736                            OpenMode::Activate,
 8737                            cx,
 8738                        )
 8739                    })
 8740                    .await
 8741                {
 8742                    Ok(OpenResult { window, .. }) => {
 8743                        fallback_handle = Some(window);
 8744                        break;
 8745                    }
 8746                    Err(fallback_err) => {
 8747                        log::error!("Fallback project group also failed: {fallback_err:#}");
 8748                    }
 8749                }
 8750            }
 8751
 8752            fallback_handle.ok_or(err)?
 8753        }
 8754    };
 8755
 8756    apply_restored_multiworkspace_state(window_handle, &state, app_state.fs.clone(), cx).await;
 8757
 8758    window_handle
 8759        .update(cx, |_, window, _cx| {
 8760            window.activate_window();
 8761        })
 8762        .ok();
 8763
 8764    Ok(window_handle)
 8765}
 8766
 8767pub async fn apply_restored_multiworkspace_state(
 8768    window_handle: WindowHandle<MultiWorkspace>,
 8769    state: &MultiWorkspaceState,
 8770    fs: Arc<dyn fs::Fs>,
 8771    cx: &mut AsyncApp,
 8772) {
 8773    let MultiWorkspaceState {
 8774        sidebar_open,
 8775        project_group_keys,
 8776        sidebar_state,
 8777        ..
 8778    } = state;
 8779
 8780    if !project_group_keys.is_empty() {
 8781        // Resolve linked worktree paths to their main repo paths so
 8782        // stale keys from previous sessions get normalized and deduped.
 8783        let mut resolved_groups: Vec<(
 8784            project::ProjectGroupId,
 8785            ProjectGroupKey,
 8786            bool,
 8787            Option<usize>,
 8788        )> = Vec::new();
 8789        for serialized in project_group_keys.iter().cloned() {
 8790            let (id, key, expanded, visible_thread_count) = serialized.into_id_key_and_state();
 8791            if key.path_list().paths().is_empty() {
 8792                continue;
 8793            }
 8794            let mut resolved_paths = Vec::new();
 8795            for path in key.path_list().paths() {
 8796                if key.host().is_none()
 8797                    && let Some(common_dir) =
 8798                        project::discover_root_repo_common_dir(path, fs.as_ref()).await
 8799                {
 8800                    let main_path = common_dir.parent().unwrap_or(&common_dir);
 8801                    resolved_paths.push(main_path.to_path_buf());
 8802                } else {
 8803                    resolved_paths.push(path.to_path_buf());
 8804                }
 8805            }
 8806            let resolved = ProjectGroupKey::new(key.host(), PathList::new(&resolved_paths));
 8807            if !resolved_groups.iter().any(|(_, k, _, _)| *k == resolved) {
 8808                resolved_groups.push((id, resolved, expanded, visible_thread_count));
 8809            }
 8810        }
 8811
 8812        window_handle
 8813            .update(cx, |multi_workspace, _window, cx| {
 8814                multi_workspace.restore_project_groups(resolved_groups, cx);
 8815            })
 8816            .ok();
 8817    }
 8818
 8819    if *sidebar_open {
 8820        window_handle
 8821            .update(cx, |multi_workspace, _, cx| {
 8822                multi_workspace.open_sidebar(cx);
 8823            })
 8824            .ok();
 8825    }
 8826
 8827    if let Some(sidebar_state) = sidebar_state {
 8828        window_handle
 8829            .update(cx, |multi_workspace, window, cx| {
 8830                if let Some(sidebar) = multi_workspace.sidebar() {
 8831                    sidebar.restore_serialized_state(sidebar_state, window, cx);
 8832                }
 8833                multi_workspace.serialize(cx);
 8834            })
 8835            .ok();
 8836    }
 8837}
 8838
 8839actions!(
 8840    collab,
 8841    [
 8842        /// Opens the channel notes for the current call.
 8843        ///
 8844        /// Use `collab_panel::OpenSelectedChannelNotes` to open the channel notes for the selected
 8845        /// channel in the collab panel.
 8846        ///
 8847        /// If you want to open a specific channel, use `zed::OpenZedUrl` with a channel notes URL -
 8848        /// can be copied via "Copy link to section" in the context menu of the channel notes
 8849        /// buffer. These URLs look like `https://zed.dev/channel/channel-name-CHANNEL_ID/notes`.
 8850        OpenChannelNotes,
 8851        /// Mutes your microphone.
 8852        Mute,
 8853        /// Deafens yourself (mute both microphone and speakers).
 8854        Deafen,
 8855        /// Leaves the current call.
 8856        LeaveCall,
 8857        /// Shares the current project with collaborators.
 8858        ShareProject,
 8859        /// Shares your screen with collaborators.
 8860        ScreenShare,
 8861        /// Copies the current room name and session id for debugging purposes.
 8862        CopyRoomId,
 8863    ]
 8864);
 8865
 8866/// Opens the channel notes for a specific channel by its ID.
 8867#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
 8868#[action(namespace = collab)]
 8869#[serde(deny_unknown_fields)]
 8870pub struct OpenChannelNotesById {
 8871    pub channel_id: u64,
 8872}
 8873
 8874actions!(
 8875    zed,
 8876    [
 8877        /// Opens the Zed log file.
 8878        OpenLog,
 8879        /// Reveals the Zed log file in the system file manager.
 8880        RevealLogInFileManager
 8881    ]
 8882);
 8883
 8884async fn join_channel_internal(
 8885    channel_id: ChannelId,
 8886    app_state: &Arc<AppState>,
 8887    requesting_window: Option<WindowHandle<MultiWorkspace>>,
 8888    requesting_workspace: Option<WeakEntity<Workspace>>,
 8889    active_call: &dyn AnyActiveCall,
 8890    cx: &mut AsyncApp,
 8891) -> Result<bool> {
 8892    let (should_prompt, already_in_channel) = cx.update(|cx| {
 8893        if !active_call.is_in_room(cx) {
 8894            return (false, false);
 8895        }
 8896
 8897        let already_in_channel = active_call.channel_id(cx) == Some(channel_id);
 8898        let should_prompt = active_call.is_sharing_project(cx)
 8899            && active_call.has_remote_participants(cx)
 8900            && !already_in_channel;
 8901        (should_prompt, already_in_channel)
 8902    });
 8903
 8904    if already_in_channel {
 8905        let task = cx.update(|cx| {
 8906            if let Some((project, host)) = active_call.most_active_project(cx) {
 8907                Some(join_in_room_project(project, host, app_state.clone(), cx))
 8908            } else {
 8909                None
 8910            }
 8911        });
 8912        if let Some(task) = task {
 8913            task.await?;
 8914        }
 8915        return anyhow::Ok(true);
 8916    }
 8917
 8918    if should_prompt {
 8919        if let Some(multi_workspace) = requesting_window {
 8920            let answer = multi_workspace
 8921                .update(cx, |_, window, cx| {
 8922                    window.prompt(
 8923                        PromptLevel::Warning,
 8924                        "Do you want to switch channels?",
 8925                        Some("Leaving this call will unshare your current project."),
 8926                        &["Yes, Join Channel", "Cancel"],
 8927                        cx,
 8928                    )
 8929                })?
 8930                .await;
 8931
 8932            if answer == Ok(1) {
 8933                return Ok(false);
 8934            }
 8935        } else {
 8936            return Ok(false);
 8937        }
 8938    }
 8939
 8940    let client = cx.update(|cx| active_call.client(cx));
 8941
 8942    let mut client_status = client.status();
 8943
 8944    // this loop will terminate within client::CONNECTION_TIMEOUT seconds.
 8945    'outer: loop {
 8946        let Some(status) = client_status.recv().await else {
 8947            anyhow::bail!("error connecting");
 8948        };
 8949
 8950        match status {
 8951            Status::Connecting
 8952            | Status::Authenticating
 8953            | Status::Authenticated
 8954            | Status::Reconnecting
 8955            | Status::Reauthenticating
 8956            | Status::Reauthenticated => continue,
 8957            Status::Connected { .. } => break 'outer,
 8958            Status::SignedOut | Status::AuthenticationError => {
 8959                return Err(ErrorCode::SignedOut.into());
 8960            }
 8961            Status::UpgradeRequired => return Err(ErrorCode::UpgradeRequired.into()),
 8962            Status::ConnectionError | Status::ConnectionLost | Status::ReconnectionError { .. } => {
 8963                return Err(ErrorCode::Disconnected.into());
 8964            }
 8965        }
 8966    }
 8967
 8968    let joined = cx
 8969        .update(|cx| active_call.join_channel(channel_id, cx))
 8970        .await?;
 8971
 8972    if !joined {
 8973        return anyhow::Ok(true);
 8974    }
 8975
 8976    cx.update(|cx| active_call.room_update_completed(cx)).await;
 8977
 8978    let task = cx.update(|cx| {
 8979        if let Some((project, host)) = active_call.most_active_project(cx) {
 8980            return Some(join_in_room_project(project, host, app_state.clone(), cx));
 8981        }
 8982
 8983        // If you are the first to join a channel, see if you should share your project.
 8984        if !active_call.has_remote_participants(cx)
 8985            && !active_call.local_participant_is_guest(cx)
 8986            && let Some(workspace) = requesting_workspace.as_ref().and_then(|w| w.upgrade())
 8987        {
 8988            let project = workspace.update(cx, |workspace, cx| {
 8989                let project = workspace.project.read(cx);
 8990
 8991                if !active_call.share_on_join(cx) {
 8992                    return None;
 8993                }
 8994
 8995                if (project.is_local() || project.is_via_remote_server())
 8996                    && project.visible_worktrees(cx).any(|tree| {
 8997                        tree.read(cx)
 8998                            .root_entry()
 8999                            .is_some_and(|entry| entry.is_dir())
 9000                    })
 9001                {
 9002                    Some(workspace.project.clone())
 9003                } else {
 9004                    None
 9005                }
 9006            });
 9007            if let Some(project) = project {
 9008                let share_task = active_call.share_project(project, cx);
 9009                return Some(cx.spawn(async move |_cx| -> Result<()> {
 9010                    share_task.await?;
 9011                    Ok(())
 9012                }));
 9013            }
 9014        }
 9015
 9016        None
 9017    });
 9018    if let Some(task) = task {
 9019        task.await?;
 9020        return anyhow::Ok(true);
 9021    }
 9022    anyhow::Ok(false)
 9023}
 9024
 9025pub fn join_channel(
 9026    channel_id: ChannelId,
 9027    app_state: Arc<AppState>,
 9028    requesting_window: Option<WindowHandle<MultiWorkspace>>,
 9029    requesting_workspace: Option<WeakEntity<Workspace>>,
 9030    cx: &mut App,
 9031) -> Task<Result<()>> {
 9032    let active_call = GlobalAnyActiveCall::global(cx).clone();
 9033    cx.spawn(async move |cx| {
 9034        let result = join_channel_internal(
 9035            channel_id,
 9036            &app_state,
 9037            requesting_window,
 9038            requesting_workspace,
 9039            &*active_call.0,
 9040            cx,
 9041        )
 9042        .await;
 9043
 9044        // join channel succeeded, and opened a window
 9045        if matches!(result, Ok(true)) {
 9046            return anyhow::Ok(());
 9047        }
 9048
 9049        // find an existing workspace to focus and show call controls
 9050        let mut active_window = requesting_window.or_else(|| activate_any_workspace_window(cx));
 9051        if active_window.is_none() {
 9052            // no open workspaces, make one to show the error in (blergh)
 9053            let OpenResult {
 9054                window: window_handle,
 9055                ..
 9056            } = cx
 9057                .update(|cx| {
 9058                    Workspace::new_local(
 9059                        vec![],
 9060                        app_state.clone(),
 9061                        requesting_window,
 9062                        None,
 9063                        None,
 9064                        OpenMode::Activate,
 9065                        cx,
 9066                    )
 9067                })
 9068                .await?;
 9069
 9070            window_handle
 9071                .update(cx, |_, window, _cx| {
 9072                    window.activate_window();
 9073                })
 9074                .ok();
 9075
 9076            if result.is_ok() {
 9077                cx.update(|cx| {
 9078                    cx.dispatch_action(&OpenChannelNotes);
 9079                });
 9080            }
 9081
 9082            active_window = Some(window_handle);
 9083        }
 9084
 9085        if let Err(err) = result {
 9086            log::error!("failed to join channel: {}", err);
 9087            if let Some(active_window) = active_window {
 9088                active_window
 9089                    .update(cx, |_, window, cx| {
 9090                        let detail: SharedString = match err.error_code() {
 9091                            ErrorCode::SignedOut => "Please sign in to continue.".into(),
 9092                            ErrorCode::UpgradeRequired => concat!(
 9093                                "Your are running an unsupported version of Zed. ",
 9094                                "Please update to continue."
 9095                            )
 9096                            .into(),
 9097                            ErrorCode::NoSuchChannel => concat!(
 9098                                "No matching channel was found. ",
 9099                                "Please check the link and try again."
 9100                            )
 9101                            .into(),
 9102                            ErrorCode::Forbidden => concat!(
 9103                                "This channel is private, and you do not have access. ",
 9104                                "Please ask someone to add you and try again."
 9105                            )
 9106                            .into(),
 9107                            ErrorCode::Disconnected => {
 9108                                "Please check your internet connection and try again.".into()
 9109                            }
 9110                            _ => format!("{}\n\nPlease try again.", err).into(),
 9111                        };
 9112                        window.prompt(
 9113                            PromptLevel::Critical,
 9114                            "Failed to join channel",
 9115                            Some(&detail),
 9116                            &["Ok"],
 9117                            cx,
 9118                        )
 9119                    })?
 9120                    .await
 9121                    .ok();
 9122            }
 9123        }
 9124
 9125        // return ok, we showed the error to the user.
 9126        anyhow::Ok(())
 9127    })
 9128}
 9129
 9130pub async fn get_any_active_multi_workspace(
 9131    app_state: Arc<AppState>,
 9132    mut cx: AsyncApp,
 9133) -> anyhow::Result<WindowHandle<MultiWorkspace>> {
 9134    // find an existing workspace to focus and show call controls
 9135    let active_window = activate_any_workspace_window(&mut cx);
 9136    if active_window.is_none() {
 9137        cx.update(|cx| {
 9138            Workspace::new_local(
 9139                vec![],
 9140                app_state.clone(),
 9141                None,
 9142                None,
 9143                None,
 9144                OpenMode::Activate,
 9145                cx,
 9146            )
 9147        })
 9148        .await?;
 9149    }
 9150    activate_any_workspace_window(&mut cx).context("could not open zed")
 9151}
 9152
 9153fn activate_any_workspace_window(cx: &mut AsyncApp) -> Option<WindowHandle<MultiWorkspace>> {
 9154    cx.update(|cx| {
 9155        if let Some(workspace_window) = cx
 9156            .active_window()
 9157            .and_then(|window| window.downcast::<MultiWorkspace>())
 9158        {
 9159            return Some(workspace_window);
 9160        }
 9161
 9162        for window in cx.windows() {
 9163            if let Some(workspace_window) = window.downcast::<MultiWorkspace>() {
 9164                workspace_window
 9165                    .update(cx, |_, window, _| window.activate_window())
 9166                    .ok();
 9167                return Some(workspace_window);
 9168            }
 9169        }
 9170        None
 9171    })
 9172}
 9173
 9174pub fn local_workspace_windows(cx: &App) -> Vec<WindowHandle<MultiWorkspace>> {
 9175    workspace_windows_for_location(&SerializedWorkspaceLocation::Local, cx)
 9176}
 9177
 9178pub fn workspace_windows_for_location(
 9179    serialized_location: &SerializedWorkspaceLocation,
 9180    cx: &App,
 9181) -> Vec<WindowHandle<MultiWorkspace>> {
 9182    cx.windows()
 9183        .into_iter()
 9184        .filter_map(|window| window.downcast::<MultiWorkspace>())
 9185        .filter(|multi_workspace| {
 9186            let same_host = |left: &RemoteConnectionOptions, right: &RemoteConnectionOptions| match (left, right) {
 9187                (RemoteConnectionOptions::Ssh(a), RemoteConnectionOptions::Ssh(b)) => {
 9188                    (&a.host, &a.username, &a.port) == (&b.host, &b.username, &b.port)
 9189                }
 9190                (RemoteConnectionOptions::Wsl(a), RemoteConnectionOptions::Wsl(b)) => {
 9191                    // The WSL username is not consistently populated in the workspace location, so ignore it for now.
 9192                    a.distro_name == b.distro_name
 9193                }
 9194                (RemoteConnectionOptions::Docker(a), RemoteConnectionOptions::Docker(b)) => {
 9195                    a.container_id == b.container_id
 9196                }
 9197                #[cfg(any(test, feature = "test-support"))]
 9198                (RemoteConnectionOptions::Mock(a), RemoteConnectionOptions::Mock(b)) => {
 9199                    a.id == b.id
 9200                }
 9201                _ => false,
 9202            };
 9203
 9204            multi_workspace.read(cx).is_ok_and(|multi_workspace| {
 9205                multi_workspace.workspaces(cx).iter().any(|workspace| {
 9206                    match workspace.read(cx).workspace_location(cx) {
 9207                        WorkspaceLocation::Location(location, _) => {
 9208                            match (&location, serialized_location) {
 9209                                (
 9210                                    SerializedWorkspaceLocation::Local,
 9211                                    SerializedWorkspaceLocation::Local,
 9212                                ) => true,
 9213                                (
 9214                                    SerializedWorkspaceLocation::Remote(a),
 9215                                    SerializedWorkspaceLocation::Remote(b),
 9216                                ) => same_host(a, b),
 9217                                _ => false,
 9218                            }
 9219                        }
 9220                        _ => false,
 9221                    }
 9222                })
 9223            })
 9224        })
 9225        .collect()
 9226}
 9227
 9228pub async fn find_existing_workspace(
 9229    abs_paths: &[PathBuf],
 9230    open_options: &OpenOptions,
 9231    location: &SerializedWorkspaceLocation,
 9232    cx: &mut AsyncApp,
 9233) -> (
 9234    Option<(WindowHandle<MultiWorkspace>, Entity<Workspace>)>,
 9235    OpenVisible,
 9236) {
 9237    let mut existing: Option<(WindowHandle<MultiWorkspace>, Entity<Workspace>)> = None;
 9238    let mut open_visible = OpenVisible::All;
 9239    let mut best_match = None;
 9240
 9241    cx.update(|cx| {
 9242        for window in workspace_windows_for_location(location, cx) {
 9243            if let Ok(multi_workspace) = window.read(cx) {
 9244                for workspace in multi_workspace.workspaces(cx) {
 9245                    let project = workspace.read(cx).project.read(cx);
 9246                    let m = project.visibility_for_paths(
 9247                        abs_paths,
 9248                        open_options.open_new_workspace == None,
 9249                        cx,
 9250                    );
 9251                    if m > best_match {
 9252                        existing = Some((window, workspace.clone()));
 9253                        best_match = m;
 9254                    } else if best_match.is_none() && open_options.open_new_workspace == Some(false)
 9255                    {
 9256                        existing = Some((window, workspace.clone()))
 9257                    }
 9258                }
 9259            }
 9260        }
 9261    });
 9262
 9263    // With -n, only reuse a window if the path is genuinely contained
 9264    // within an existing worktree (don't fall back to any arbitrary window).
 9265    if open_options.open_new_workspace == Some(true) && best_match.is_none() {
 9266        existing = None;
 9267    }
 9268
 9269    if open_options.open_new_workspace != Some(true) {
 9270        let all_paths_are_files = existing
 9271            .as_ref()
 9272            .and_then(|(_, target_workspace)| {
 9273                cx.update(|cx| {
 9274                    let workspace = target_workspace.read(cx);
 9275                    let project = workspace.project.read(cx);
 9276                    let path_style = workspace.path_style(cx);
 9277                    Some(!abs_paths.iter().any(|path| {
 9278                        let path = util::paths::SanitizedPath::new(path);
 9279                        project.worktrees(cx).any(|worktree| {
 9280                            let worktree = worktree.read(cx);
 9281                            let abs_path = worktree.abs_path();
 9282                            path_style
 9283                                .strip_prefix(path.as_ref(), abs_path.as_ref())
 9284                                .and_then(|rel| worktree.entry_for_path(&rel))
 9285                                .is_some_and(|e| e.is_dir())
 9286                        })
 9287                    }))
 9288                })
 9289            })
 9290            .unwrap_or(false);
 9291
 9292        if open_options.open_new_workspace.is_none()
 9293            && existing.is_some()
 9294            && open_options.wait
 9295            && all_paths_are_files
 9296        {
 9297            cx.update(|cx| {
 9298                let windows = workspace_windows_for_location(location, cx);
 9299                let window = cx
 9300                    .active_window()
 9301                    .and_then(|window| window.downcast::<MultiWorkspace>())
 9302                    .filter(|window| windows.contains(window))
 9303                    .or_else(|| windows.into_iter().next());
 9304                if let Some(window) = window {
 9305                    if let Ok(multi_workspace) = window.read(cx) {
 9306                        let active_workspace = multi_workspace.workspace().clone();
 9307                        existing = Some((window, active_workspace));
 9308                        open_visible = OpenVisible::None;
 9309                    }
 9310                }
 9311            });
 9312        }
 9313    }
 9314    (existing, open_visible)
 9315}
 9316
 9317#[derive(Default, Clone)]
 9318pub struct OpenOptions {
 9319    pub visible: Option<OpenVisible>,
 9320    pub focus: Option<bool>,
 9321    pub open_new_workspace: Option<bool>,
 9322    pub wait: bool,
 9323    pub requesting_window: Option<WindowHandle<MultiWorkspace>>,
 9324    pub open_mode: OpenMode,
 9325    pub env: Option<HashMap<String, String>>,
 9326    pub open_in_dev_container: bool,
 9327}
 9328
 9329/// The result of opening a workspace via [`open_paths`], [`Workspace::new_local`],
 9330/// or [`Workspace::open_workspace_for_paths`].
 9331pub struct OpenResult {
 9332    pub window: WindowHandle<MultiWorkspace>,
 9333    pub workspace: Entity<Workspace>,
 9334    pub opened_items: Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 9335}
 9336
 9337/// Opens a workspace by its database ID, used for restoring empty workspaces with unsaved content.
 9338pub fn open_workspace_by_id(
 9339    workspace_id: WorkspaceId,
 9340    app_state: Arc<AppState>,
 9341    requesting_window: Option<WindowHandle<MultiWorkspace>>,
 9342    cx: &mut App,
 9343) -> Task<anyhow::Result<WindowHandle<MultiWorkspace>>> {
 9344    let project_handle = Project::local(
 9345        app_state.client.clone(),
 9346        app_state.node_runtime.clone(),
 9347        app_state.user_store.clone(),
 9348        app_state.languages.clone(),
 9349        app_state.fs.clone(),
 9350        None,
 9351        project::LocalProjectFlags {
 9352            init_worktree_trust: true,
 9353            ..project::LocalProjectFlags::default()
 9354        },
 9355        cx,
 9356    );
 9357
 9358    let db = WorkspaceDb::global(cx);
 9359    let kvp = db::kvp::KeyValueStore::global(cx);
 9360    cx.spawn(async move |cx| {
 9361        let serialized_workspace = db
 9362            .workspace_for_id(workspace_id)
 9363            .with_context(|| format!("Workspace {workspace_id:?} not found"))?;
 9364
 9365        let centered_layout = serialized_workspace.centered_layout;
 9366
 9367        let (window, workspace) = if let Some(window) = requesting_window {
 9368            let workspace = window.update(cx, |multi_workspace, window, cx| {
 9369                let workspace = cx.new(|cx| {
 9370                    let mut workspace = Workspace::new(
 9371                        Some(workspace_id),
 9372                        project_handle.clone(),
 9373                        app_state.clone(),
 9374                        window,
 9375                        cx,
 9376                    );
 9377                    workspace.centered_layout = centered_layout;
 9378                    workspace
 9379                });
 9380                multi_workspace.add(workspace.clone(), &*window, cx);
 9381                workspace
 9382            })?;
 9383            (window, workspace)
 9384        } else {
 9385            let window_bounds_override = window_bounds_env_override();
 9386
 9387            let (window_bounds, display) = if let Some(bounds) = window_bounds_override {
 9388                (Some(WindowBounds::Windowed(bounds)), None)
 9389            } else if let Some(display) = serialized_workspace.display
 9390                && let Some(bounds) = serialized_workspace.window_bounds.as_ref()
 9391            {
 9392                (Some(bounds.0), Some(display))
 9393            } else if let Some((display, bounds)) = persistence::read_default_window_bounds(&kvp) {
 9394                (Some(bounds), Some(display))
 9395            } else {
 9396                (None, None)
 9397            };
 9398
 9399            let options = cx.update(|cx| {
 9400                let mut options = (app_state.build_window_options)(display, cx);
 9401                options.window_bounds = window_bounds;
 9402                options
 9403            });
 9404
 9405            let window = cx.open_window(options, {
 9406                let app_state = app_state.clone();
 9407                let project_handle = project_handle.clone();
 9408                move |window, cx| {
 9409                    let workspace = cx.new(|cx| {
 9410                        let mut workspace = Workspace::new(
 9411                            Some(workspace_id),
 9412                            project_handle,
 9413                            app_state,
 9414                            window,
 9415                            cx,
 9416                        );
 9417                        workspace.centered_layout = centered_layout;
 9418                        workspace
 9419                    });
 9420                    cx.new(|cx| MultiWorkspace::new(workspace, window, cx))
 9421                }
 9422            })?;
 9423
 9424            let workspace = window.update(cx, |multi_workspace: &mut MultiWorkspace, _, _cx| {
 9425                multi_workspace.workspace().clone()
 9426            })?;
 9427
 9428            (window, workspace)
 9429        };
 9430
 9431        notify_if_database_failed(window, cx);
 9432
 9433        // Restore items from the serialized workspace
 9434        window
 9435            .update(cx, |_, window, cx| {
 9436                workspace.update(cx, |_workspace, cx| {
 9437                    open_items(Some(serialized_workspace), vec![], window, cx)
 9438                })
 9439            })?
 9440            .await?;
 9441
 9442        window.update(cx, |_, window, cx| {
 9443            workspace.update(cx, |workspace, cx| {
 9444                workspace.serialize_workspace(window, cx);
 9445            });
 9446        })?;
 9447
 9448        Ok(window)
 9449    })
 9450}
 9451
 9452#[allow(clippy::type_complexity)]
 9453pub fn open_paths(
 9454    abs_paths: &[PathBuf],
 9455    app_state: Arc<AppState>,
 9456    mut open_options: OpenOptions,
 9457    cx: &mut App,
 9458) -> Task<anyhow::Result<OpenResult>> {
 9459    let abs_paths = abs_paths.to_vec();
 9460    #[cfg(target_os = "windows")]
 9461    let wsl_path = abs_paths
 9462        .iter()
 9463        .find_map(|p| util::paths::WslPath::from_path(p));
 9464
 9465    cx.spawn(async move |cx| {
 9466        let (mut existing, mut open_visible) = find_existing_workspace(
 9467            &abs_paths,
 9468            &open_options,
 9469            &SerializedWorkspaceLocation::Local,
 9470            cx,
 9471        )
 9472        .await;
 9473
 9474        // Fallback: if no workspace contains the paths and all paths are files,
 9475        // prefer an existing local workspace window (active window first).
 9476        if open_options.open_new_workspace.is_none() && existing.is_none() {
 9477            let all_paths = abs_paths.iter().map(|path| app_state.fs.metadata(path));
 9478            let all_metadatas = futures::future::join_all(all_paths)
 9479                .await
 9480                .into_iter()
 9481                .filter_map(|result| result.ok().flatten());
 9482
 9483            if all_metadatas.into_iter().all(|file| !file.is_dir) {
 9484                cx.update(|cx| {
 9485                    let windows = workspace_windows_for_location(
 9486                        &SerializedWorkspaceLocation::Local,
 9487                        cx,
 9488                    );
 9489                    let window = cx
 9490                        .active_window()
 9491                        .and_then(|window| window.downcast::<MultiWorkspace>())
 9492                        .filter(|window| windows.contains(window))
 9493                        .or_else(|| windows.into_iter().next());
 9494                    if let Some(window) = window {
 9495                        if let Ok(multi_workspace) = window.read(cx) {
 9496                            let active_workspace = multi_workspace.workspace().clone();
 9497                            existing = Some((window, active_workspace));
 9498                            open_visible = OpenVisible::None;
 9499                        }
 9500                    }
 9501                });
 9502            }
 9503        }
 9504
 9505        // Fallback for directories: when no flag is specified and no existing
 9506        // workspace matched, add the directory as a new workspace in the
 9507        // active window's MultiWorkspace (instead of opening a new window).
 9508        if open_options.open_new_workspace.is_none() && existing.is_none() {
 9509            let target_window = cx.update(|cx| {
 9510                let windows = workspace_windows_for_location(
 9511                    &SerializedWorkspaceLocation::Local,
 9512                    cx,
 9513                );
 9514                let window = cx
 9515                    .active_window()
 9516                    .and_then(|window| window.downcast::<MultiWorkspace>())
 9517                    .filter(|window| windows.contains(window))
 9518                    .or_else(|| windows.into_iter().next());
 9519                window.filter(|window| {
 9520                    window.read(cx).is_ok_and(|mw| mw.multi_workspace_enabled(cx))
 9521                })
 9522            });
 9523
 9524            if let Some(window) = target_window {
 9525                open_options.requesting_window = Some(window);
 9526                window
 9527                    .update(cx, |multi_workspace, _, cx| {
 9528                        multi_workspace.open_sidebar(cx);
 9529                    })
 9530                    .log_err();
 9531            }
 9532        }
 9533
 9534        let open_in_dev_container = open_options.open_in_dev_container;
 9535
 9536        let result = if let Some((existing, target_workspace)) = existing {
 9537            let open_task = existing
 9538                .update(cx, |multi_workspace, window, cx| {
 9539                    window.activate_window();
 9540                    multi_workspace.activate(target_workspace.clone(), window, cx);
 9541                    target_workspace.update(cx, |workspace, cx| {
 9542                        if open_in_dev_container {
 9543                            workspace.set_open_in_dev_container(true);
 9544                        }
 9545                        workspace.open_paths(
 9546                            abs_paths,
 9547                            OpenOptions {
 9548                                visible: Some(open_visible),
 9549                                ..Default::default()
 9550                            },
 9551                            None,
 9552                            window,
 9553                            cx,
 9554                        )
 9555                    })
 9556                })?
 9557                .await;
 9558
 9559            _ = existing.update(cx, |multi_workspace, _, cx| {
 9560                let workspace = multi_workspace.workspace().clone();
 9561                workspace.update(cx, |workspace, cx| {
 9562                    for item in open_task.iter().flatten() {
 9563                        if let Err(e) = item {
 9564                            workspace.show_error(&e, cx);
 9565                        }
 9566                    }
 9567                });
 9568            });
 9569
 9570            Ok(OpenResult { window: existing, workspace: target_workspace, opened_items: open_task })
 9571        } else {
 9572            let init = if open_in_dev_container {
 9573                Some(Box::new(|workspace: &mut Workspace, _window: &mut Window, _cx: &mut Context<Workspace>| {
 9574                    workspace.set_open_in_dev_container(true);
 9575                }) as Box<dyn FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send>)
 9576            } else {
 9577                None
 9578            };
 9579            let result = cx
 9580                .update(move |cx| {
 9581                    Workspace::new_local(
 9582                        abs_paths,
 9583                        app_state.clone(),
 9584                        open_options.requesting_window,
 9585                        open_options.env,
 9586                        init,
 9587                        open_options.open_mode,
 9588                        cx,
 9589                    )
 9590                })
 9591                .await;
 9592
 9593            if let Ok(ref result) = result {
 9594                result.window
 9595                    .update(cx, |_, window, _cx| {
 9596                        window.activate_window();
 9597                    })
 9598                    .log_err();
 9599            }
 9600
 9601            result
 9602        };
 9603
 9604        #[cfg(target_os = "windows")]
 9605        if let Some(util::paths::WslPath{distro, path}) = wsl_path
 9606            && let Ok(ref result) = result
 9607        {
 9608            result.window
 9609                .update(cx, move |multi_workspace, _window, cx| {
 9610                    struct OpenInWsl;
 9611                    let workspace = multi_workspace.workspace().clone();
 9612                    workspace.update(cx, |workspace, cx| {
 9613                        workspace.show_notification(NotificationId::unique::<OpenInWsl>(), cx, move |cx| {
 9614                            let display_path = util::markdown::MarkdownInlineCode(&path.to_string_lossy());
 9615                            let msg = format!("{display_path} is inside a WSL filesystem, some features may not work unless you open it with WSL remote");
 9616                            cx.new(move |cx| {
 9617                                MessageNotification::new(msg, cx)
 9618                                    .primary_message("Open in WSL")
 9619                                    .primary_icon(IconName::FolderOpen)
 9620                                    .primary_on_click(move |window, cx| {
 9621                                        window.dispatch_action(Box::new(remote::OpenWslPath {
 9622                                                distro: remote::WslConnectionOptions {
 9623                                                        distro_name: distro.clone(),
 9624                                                    user: None,
 9625                                                },
 9626                                                paths: vec![path.clone().into()],
 9627                                            }), cx)
 9628                                    })
 9629                            })
 9630                        });
 9631                    });
 9632                })
 9633                .unwrap();
 9634        };
 9635        result
 9636    })
 9637}
 9638
 9639pub fn open_new(
 9640    open_options: OpenOptions,
 9641    app_state: Arc<AppState>,
 9642    cx: &mut App,
 9643    init: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + 'static + Send,
 9644) -> Task<anyhow::Result<()>> {
 9645    let addition = open_options.open_mode;
 9646    let task = Workspace::new_local(
 9647        Vec::new(),
 9648        app_state,
 9649        open_options.requesting_window,
 9650        open_options.env,
 9651        Some(Box::new(init)),
 9652        addition,
 9653        cx,
 9654    );
 9655    cx.spawn(async move |cx| {
 9656        let OpenResult { window, .. } = task.await?;
 9657        window
 9658            .update(cx, |_, window, _cx| {
 9659                window.activate_window();
 9660            })
 9661            .ok();
 9662        Ok(())
 9663    })
 9664}
 9665
 9666pub fn create_and_open_local_file(
 9667    path: &'static Path,
 9668    window: &mut Window,
 9669    cx: &mut Context<Workspace>,
 9670    default_content: impl 'static + Send + FnOnce() -> Rope,
 9671) -> Task<Result<Box<dyn ItemHandle>>> {
 9672    cx.spawn_in(window, async move |workspace, cx| {
 9673        let fs = workspace.read_with(cx, |workspace, _| workspace.app_state().fs.clone())?;
 9674        if !fs.is_file(path).await {
 9675            fs.create_file(path, Default::default()).await?;
 9676            fs.save(path, &default_content(), Default::default())
 9677                .await?;
 9678        }
 9679
 9680        workspace
 9681            .update_in(cx, |workspace, window, cx| {
 9682                workspace.with_local_or_wsl_workspace(window, cx, |workspace, window, cx| {
 9683                    let path = workspace
 9684                        .project
 9685                        .read_with(cx, |project, cx| project.try_windows_path_to_wsl(path, cx));
 9686                    cx.spawn_in(window, async move |workspace, cx| {
 9687                        let path = path.await?;
 9688
 9689                        let path = fs.canonicalize(&path).await.unwrap_or(path);
 9690
 9691                        let mut items = workspace
 9692                            .update_in(cx, |workspace, window, cx| {
 9693                                workspace.open_paths(
 9694                                    vec![path.to_path_buf()],
 9695                                    OpenOptions {
 9696                                        visible: Some(OpenVisible::None),
 9697                                        ..Default::default()
 9698                                    },
 9699                                    None,
 9700                                    window,
 9701                                    cx,
 9702                                )
 9703                            })?
 9704                            .await;
 9705                        let item = items.pop().flatten();
 9706                        item.with_context(|| format!("path {path:?} is not a file"))?
 9707                    })
 9708                })
 9709            })?
 9710            .await?
 9711            .await
 9712    })
 9713}
 9714
 9715pub fn open_remote_project_with_new_connection(
 9716    window: WindowHandle<MultiWorkspace>,
 9717    remote_connection: Arc<dyn RemoteConnection>,
 9718    cancel_rx: oneshot::Receiver<()>,
 9719    delegate: Arc<dyn RemoteClientDelegate>,
 9720    app_state: Arc<AppState>,
 9721    paths: Vec<PathBuf>,
 9722    cx: &mut App,
 9723) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 9724    cx.spawn(async move |cx| {
 9725        let (workspace_id, serialized_workspace) =
 9726            deserialize_remote_project(remote_connection.connection_options(), paths.clone(), cx)
 9727                .await?;
 9728
 9729        let session = match cx
 9730            .update(|cx| {
 9731                remote::RemoteClient::new(
 9732                    ConnectionIdentifier::Workspace(workspace_id.0),
 9733                    remote_connection,
 9734                    cancel_rx,
 9735                    delegate,
 9736                    cx,
 9737                )
 9738            })
 9739            .await?
 9740        {
 9741            Some(result) => result,
 9742            None => return Ok(Vec::new()),
 9743        };
 9744
 9745        let project = cx.update(|cx| {
 9746            project::Project::remote(
 9747                session,
 9748                app_state.client.clone(),
 9749                app_state.node_runtime.clone(),
 9750                app_state.user_store.clone(),
 9751                app_state.languages.clone(),
 9752                app_state.fs.clone(),
 9753                true,
 9754                cx,
 9755            )
 9756        });
 9757
 9758        open_remote_project_inner(
 9759            project,
 9760            paths,
 9761            workspace_id,
 9762            serialized_workspace,
 9763            app_state,
 9764            window,
 9765            None,
 9766            cx,
 9767        )
 9768        .await
 9769    })
 9770}
 9771
 9772pub fn open_remote_project_with_existing_connection(
 9773    connection_options: RemoteConnectionOptions,
 9774    project: Entity<Project>,
 9775    paths: Vec<PathBuf>,
 9776    app_state: Arc<AppState>,
 9777    window: WindowHandle<MultiWorkspace>,
 9778    provisional_project_group_key: Option<ProjectGroupKey>,
 9779    cx: &mut AsyncApp,
 9780) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 9781    cx.spawn(async move |cx| {
 9782        let (workspace_id, serialized_workspace) =
 9783            deserialize_remote_project(connection_options.clone(), paths.clone(), cx).await?;
 9784
 9785        open_remote_project_inner(
 9786            project,
 9787            paths,
 9788            workspace_id,
 9789            serialized_workspace,
 9790            app_state,
 9791            window,
 9792            provisional_project_group_key,
 9793            cx,
 9794        )
 9795        .await
 9796    })
 9797}
 9798
 9799async fn open_remote_project_inner(
 9800    project: Entity<Project>,
 9801    paths: Vec<PathBuf>,
 9802    workspace_id: WorkspaceId,
 9803    serialized_workspace: Option<SerializedWorkspace>,
 9804    app_state: Arc<AppState>,
 9805    window: WindowHandle<MultiWorkspace>,
 9806    provisional_project_group_key: Option<ProjectGroupKey>,
 9807    cx: &mut AsyncApp,
 9808) -> Result<Vec<Option<Box<dyn ItemHandle>>>> {
 9809    let db = cx.update(|cx| WorkspaceDb::global(cx));
 9810    let toolchains = db.toolchains(workspace_id).await?;
 9811    for (toolchain, worktree_path, path) in toolchains {
 9812        project
 9813            .update(cx, |this, cx| {
 9814                let Some(worktree_id) =
 9815                    this.find_worktree(&worktree_path, cx)
 9816                        .and_then(|(worktree, rel_path)| {
 9817                            if rel_path.is_empty() {
 9818                                Some(worktree.read(cx).id())
 9819                            } else {
 9820                                None
 9821                            }
 9822                        })
 9823                else {
 9824                    return Task::ready(None);
 9825                };
 9826
 9827                this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 9828            })
 9829            .await;
 9830    }
 9831    let mut project_paths_to_open = vec![];
 9832    let mut project_path_errors = vec![];
 9833
 9834    for path in paths {
 9835        let result = cx
 9836            .update(|cx| Workspace::project_path_for_path(project.clone(), &path, true, cx))
 9837            .await;
 9838        match result {
 9839            Ok((_, project_path)) => {
 9840                project_paths_to_open.push((path.clone(), Some(project_path)));
 9841            }
 9842            Err(error) => {
 9843                project_path_errors.push(error);
 9844            }
 9845        };
 9846    }
 9847
 9848    if project_paths_to_open.is_empty() {
 9849        return Err(project_path_errors.pop().context("no paths given")?);
 9850    }
 9851
 9852    let workspace = window.update(cx, |multi_workspace, window, cx| {
 9853        telemetry::event!("SSH Project Opened");
 9854
 9855        let new_workspace = cx.new(|cx| {
 9856            let mut workspace =
 9857                Workspace::new(Some(workspace_id), project, app_state.clone(), window, cx);
 9858            workspace.update_history(cx);
 9859
 9860            if let Some(ref serialized) = serialized_workspace {
 9861                workspace.centered_layout = serialized.centered_layout;
 9862            }
 9863
 9864            workspace
 9865        });
 9866
 9867        if let Some(project_group_key) = provisional_project_group_key.clone() {
 9868            multi_workspace.ensure_workspace_in_group(new_workspace.clone(), project_group_key, cx);
 9869        }
 9870        multi_workspace.activate(new_workspace.clone(), window, cx);
 9871        new_workspace
 9872    })?;
 9873
 9874    let items = window
 9875        .update(cx, |_, window, cx| {
 9876            window.activate_window();
 9877            workspace.update(cx, |_workspace, cx| {
 9878                open_items(serialized_workspace, project_paths_to_open, window, cx)
 9879            })
 9880        })?
 9881        .await?;
 9882
 9883    workspace.update(cx, |workspace, cx| {
 9884        for error in project_path_errors {
 9885            if error.error_code() == proto::ErrorCode::DevServerProjectPathDoesNotExist {
 9886                if let Some(path) = error.error_tag("path") {
 9887                    workspace.show_error(&anyhow!("'{path}' does not exist"), cx)
 9888                }
 9889            } else {
 9890                workspace.show_error(&error, cx)
 9891            }
 9892        }
 9893    });
 9894
 9895    Ok(items.into_iter().map(|item| item?.ok()).collect())
 9896}
 9897
 9898fn deserialize_remote_project(
 9899    connection_options: RemoteConnectionOptions,
 9900    paths: Vec<PathBuf>,
 9901    cx: &AsyncApp,
 9902) -> Task<Result<(WorkspaceId, Option<SerializedWorkspace>)>> {
 9903    let db = cx.update(|cx| WorkspaceDb::global(cx));
 9904    cx.background_spawn(async move {
 9905        let remote_connection_id = db
 9906            .get_or_create_remote_connection(connection_options)
 9907            .await?;
 9908
 9909        let serialized_workspace = db.remote_workspace_for_roots(&paths, remote_connection_id);
 9910
 9911        let workspace_id = if let Some(workspace_id) =
 9912            serialized_workspace.as_ref().map(|workspace| workspace.id)
 9913        {
 9914            workspace_id
 9915        } else {
 9916            db.next_id().await?
 9917        };
 9918
 9919        Ok((workspace_id, serialized_workspace))
 9920    })
 9921}
 9922
 9923pub fn join_in_room_project(
 9924    project_id: u64,
 9925    follow_user_id: u64,
 9926    app_state: Arc<AppState>,
 9927    cx: &mut App,
 9928) -> Task<Result<()>> {
 9929    let windows = cx.windows();
 9930    cx.spawn(async move |cx| {
 9931        let existing_window_and_workspace: Option<(
 9932            WindowHandle<MultiWorkspace>,
 9933            Entity<Workspace>,
 9934        )> = windows.into_iter().find_map(|window_handle| {
 9935            window_handle
 9936                .downcast::<MultiWorkspace>()
 9937                .and_then(|window_handle| {
 9938                    window_handle
 9939                        .update(cx, |multi_workspace, _window, cx| {
 9940                            for workspace in multi_workspace.workspaces(cx) {
 9941                                if workspace.read(cx).project().read(cx).remote_id()
 9942                                    == Some(project_id)
 9943                                {
 9944                                    return Some((window_handle, workspace));
 9945                                }
 9946                            }
 9947                            None
 9948                        })
 9949                        .unwrap_or(None)
 9950                })
 9951        });
 9952
 9953        let multi_workspace_window = if let Some((existing_window, target_workspace)) =
 9954            existing_window_and_workspace
 9955        {
 9956            existing_window
 9957                .update(cx, |multi_workspace, window, cx| {
 9958                    multi_workspace.activate(target_workspace, window, cx);
 9959                })
 9960                .ok();
 9961            existing_window
 9962        } else {
 9963            let active_call = cx.update(|cx| GlobalAnyActiveCall::global(cx).clone());
 9964            let project = cx
 9965                .update(|cx| {
 9966                    active_call.0.join_project(
 9967                        project_id,
 9968                        app_state.languages.clone(),
 9969                        app_state.fs.clone(),
 9970                        cx,
 9971                    )
 9972                })
 9973                .await?;
 9974
 9975            let window_bounds_override = window_bounds_env_override();
 9976            cx.update(|cx| {
 9977                let mut options = (app_state.build_window_options)(None, cx);
 9978                options.window_bounds = window_bounds_override.map(WindowBounds::Windowed);
 9979                cx.open_window(options, |window, cx| {
 9980                    let workspace = cx.new(|cx| {
 9981                        Workspace::new(Default::default(), project, app_state.clone(), window, cx)
 9982                    });
 9983                    cx.new(|cx| MultiWorkspace::new(workspace, window, cx))
 9984                })
 9985            })?
 9986        };
 9987
 9988        multi_workspace_window.update(cx, |multi_workspace, window, cx| {
 9989            cx.activate(true);
 9990            window.activate_window();
 9991
 9992            // We set the active workspace above, so this is the correct workspace.
 9993            let workspace = multi_workspace.workspace().clone();
 9994            workspace.update(cx, |workspace, cx| {
 9995                let follow_peer_id = GlobalAnyActiveCall::try_global(cx)
 9996                    .and_then(|call| call.0.peer_id_for_user_in_room(follow_user_id, cx))
 9997                    .or_else(|| {
 9998                        // If we couldn't follow the given user, follow the host instead.
 9999                        let collaborator = workspace
10000                            .project()
10001                            .read(cx)
10002                            .collaborators()
10003                            .values()
10004                            .find(|collaborator| collaborator.is_host)?;
10005                        Some(collaborator.peer_id)
10006                    });
10007
10008                if let Some(follow_peer_id) = follow_peer_id {
10009                    workspace.follow(follow_peer_id, window, cx);
10010                }
10011            });
10012        })?;
10013
10014        anyhow::Ok(())
10015    })
10016}
10017
10018pub fn reload(cx: &mut App) {
10019    let should_confirm = WorkspaceSettings::get_global(cx).confirm_quit;
10020    let mut workspace_windows = cx
10021        .windows()
10022        .into_iter()
10023        .filter_map(|window| window.downcast::<MultiWorkspace>())
10024        .collect::<Vec<_>>();
10025
10026    // If multiple windows have unsaved changes, and need a save prompt,
10027    // prompt in the active window before switching to a different window.
10028    workspace_windows.sort_by_key(|window| window.is_active(cx) == Some(false));
10029
10030    let mut prompt = None;
10031    if let (true, Some(window)) = (should_confirm, workspace_windows.first()) {
10032        prompt = window
10033            .update(cx, |_, window, cx| {
10034                window.prompt(
10035                    PromptLevel::Info,
10036                    "Are you sure you want to restart?",
10037                    None,
10038                    &["Restart", "Cancel"],
10039                    cx,
10040                )
10041            })
10042            .ok();
10043    }
10044
10045    cx.spawn(async move |cx| {
10046        if let Some(prompt) = prompt {
10047            let answer = prompt.await?;
10048            if answer != 0 {
10049                return anyhow::Ok(());
10050            }
10051        }
10052
10053        // If the user cancels any save prompt, then keep the app open.
10054        for window in workspace_windows {
10055            if let Ok(should_close) = window.update(cx, |multi_workspace, window, cx| {
10056                let workspace = multi_workspace.workspace().clone();
10057                workspace.update(cx, |workspace, cx| {
10058                    workspace.prepare_to_close(CloseIntent::Quit, window, cx)
10059                })
10060            }) && !should_close.await?
10061            {
10062                return anyhow::Ok(());
10063            }
10064        }
10065        cx.update(|cx| cx.restart());
10066        anyhow::Ok(())
10067    })
10068    .detach_and_log_err(cx);
10069}
10070
10071fn parse_pixel_position_env_var(value: &str) -> Option<Point<Pixels>> {
10072    let mut parts = value.split(',');
10073    let x: usize = parts.next()?.parse().ok()?;
10074    let y: usize = parts.next()?.parse().ok()?;
10075    Some(point(px(x as f32), px(y as f32)))
10076}
10077
10078fn parse_pixel_size_env_var(value: &str) -> Option<Size<Pixels>> {
10079    let mut parts = value.split(',');
10080    let width: usize = parts.next()?.parse().ok()?;
10081    let height: usize = parts.next()?.parse().ok()?;
10082    Some(size(px(width as f32), px(height as f32)))
10083}
10084
10085/// Add client-side decorations (rounded corners, shadows, resize handling) when
10086/// appropriate.
10087///
10088/// The `border_radius_tiling` parameter allows overriding which corners get
10089/// rounded, independently of the actual window tiling state. This is used
10090/// specifically for the workspace switcher sidebar: when the sidebar is open,
10091/// we want square corners on the left (so the sidebar appears flush with the
10092/// window edge) but we still need the shadow padding for proper visual
10093/// appearance. Unlike actual window tiling, this only affects border radius -
10094/// not padding or shadows.
10095pub fn client_side_decorations(
10096    element: impl IntoElement,
10097    window: &mut Window,
10098    cx: &mut App,
10099    border_radius_tiling: Tiling,
10100) -> Stateful<Div> {
10101    const BORDER_SIZE: Pixels = px(1.0);
10102    let decorations = window.window_decorations();
10103    let tiling = match decorations {
10104        Decorations::Server => Tiling::default(),
10105        Decorations::Client { tiling } => tiling,
10106    };
10107
10108    match decorations {
10109        Decorations::Client { .. } => window.set_client_inset(theme::CLIENT_SIDE_DECORATION_SHADOW),
10110        Decorations::Server => window.set_client_inset(px(0.0)),
10111    }
10112
10113    struct GlobalResizeEdge(ResizeEdge);
10114    impl Global for GlobalResizeEdge {}
10115
10116    div()
10117        .id("window-backdrop")
10118        .bg(transparent_black())
10119        .map(|div| match decorations {
10120            Decorations::Server => div,
10121            Decorations::Client { .. } => div
10122                .when(
10123                    !(tiling.top
10124                        || tiling.right
10125                        || border_radius_tiling.top
10126                        || border_radius_tiling.right),
10127                    |div| div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING),
10128                )
10129                .when(
10130                    !(tiling.top
10131                        || tiling.left
10132                        || border_radius_tiling.top
10133                        || border_radius_tiling.left),
10134                    |div| div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING),
10135                )
10136                .when(
10137                    !(tiling.bottom
10138                        || tiling.right
10139                        || border_radius_tiling.bottom
10140                        || border_radius_tiling.right),
10141                    |div| div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING),
10142                )
10143                .when(
10144                    !(tiling.bottom
10145                        || tiling.left
10146                        || border_radius_tiling.bottom
10147                        || border_radius_tiling.left),
10148                    |div| div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING),
10149                )
10150                .when(!tiling.top, |div| {
10151                    div.pt(theme::CLIENT_SIDE_DECORATION_SHADOW)
10152                })
10153                .when(!tiling.bottom, |div| {
10154                    div.pb(theme::CLIENT_SIDE_DECORATION_SHADOW)
10155                })
10156                .when(!tiling.left, |div| {
10157                    div.pl(theme::CLIENT_SIDE_DECORATION_SHADOW)
10158                })
10159                .when(!tiling.right, |div| {
10160                    div.pr(theme::CLIENT_SIDE_DECORATION_SHADOW)
10161                })
10162                .on_mouse_move(move |e, window, cx| {
10163                    let size = window.window_bounds().get_bounds().size;
10164                    let pos = e.position;
10165
10166                    let new_edge =
10167                        resize_edge(pos, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling);
10168
10169                    let edge = cx.try_global::<GlobalResizeEdge>();
10170                    if new_edge != edge.map(|edge| edge.0) {
10171                        window
10172                            .window_handle()
10173                            .update(cx, |workspace, _, cx| {
10174                                cx.notify(workspace.entity_id());
10175                            })
10176                            .ok();
10177                    }
10178                })
10179                .on_mouse_down(MouseButton::Left, move |e, window, _| {
10180                    let size = window.window_bounds().get_bounds().size;
10181                    let pos = e.position;
10182
10183                    let edge = match resize_edge(
10184                        pos,
10185                        theme::CLIENT_SIDE_DECORATION_SHADOW,
10186                        size,
10187                        tiling,
10188                    ) {
10189                        Some(value) => value,
10190                        None => return,
10191                    };
10192
10193                    window.start_window_resize(edge);
10194                }),
10195        })
10196        .size_full()
10197        .child(
10198            div()
10199                .cursor(CursorStyle::Arrow)
10200                .map(|div| match decorations {
10201                    Decorations::Server => div,
10202                    Decorations::Client { .. } => div
10203                        .border_color(cx.theme().colors().border)
10204                        .when(
10205                            !(tiling.top
10206                                || tiling.right
10207                                || border_radius_tiling.top
10208                                || border_radius_tiling.right),
10209                            |div| div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING),
10210                        )
10211                        .when(
10212                            !(tiling.top
10213                                || tiling.left
10214                                || border_radius_tiling.top
10215                                || border_radius_tiling.left),
10216                            |div| div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING),
10217                        )
10218                        .when(
10219                            !(tiling.bottom
10220                                || tiling.right
10221                                || border_radius_tiling.bottom
10222                                || border_radius_tiling.right),
10223                            |div| div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING),
10224                        )
10225                        .when(
10226                            !(tiling.bottom
10227                                || tiling.left
10228                                || border_radius_tiling.bottom
10229                                || border_radius_tiling.left),
10230                            |div| div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING),
10231                        )
10232                        .when(!tiling.top, |div| div.border_t(BORDER_SIZE))
10233                        .when(!tiling.bottom, |div| div.border_b(BORDER_SIZE))
10234                        .when(!tiling.left, |div| div.border_l(BORDER_SIZE))
10235                        .when(!tiling.right, |div| div.border_r(BORDER_SIZE))
10236                        .when(!tiling.is_tiled(), |div| {
10237                            div.shadow(vec![gpui::BoxShadow {
10238                                color: Hsla {
10239                                    h: 0.,
10240                                    s: 0.,
10241                                    l: 0.,
10242                                    a: 0.4,
10243                                },
10244                                blur_radius: theme::CLIENT_SIDE_DECORATION_SHADOW / 2.,
10245                                spread_radius: px(0.),
10246                                offset: point(px(0.0), px(0.0)),
10247                            }])
10248                        }),
10249                })
10250                .on_mouse_move(|_e, _, cx| {
10251                    cx.stop_propagation();
10252                })
10253                .size_full()
10254                .child(element),
10255        )
10256        .map(|div| match decorations {
10257            Decorations::Server => div,
10258            Decorations::Client { tiling, .. } => div.child(
10259                canvas(
10260                    |_bounds, window, _| {
10261                        window.insert_hitbox(
10262                            Bounds::new(
10263                                point(px(0.0), px(0.0)),
10264                                window.window_bounds().get_bounds().size,
10265                            ),
10266                            HitboxBehavior::Normal,
10267                        )
10268                    },
10269                    move |_bounds, hitbox, window, cx| {
10270                        let mouse = window.mouse_position();
10271                        let size = window.window_bounds().get_bounds().size;
10272                        let Some(edge) =
10273                            resize_edge(mouse, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling)
10274                        else {
10275                            return;
10276                        };
10277                        cx.set_global(GlobalResizeEdge(edge));
10278                        window.set_cursor_style(
10279                            match edge {
10280                                ResizeEdge::Top | ResizeEdge::Bottom => CursorStyle::ResizeUpDown,
10281                                ResizeEdge::Left | ResizeEdge::Right => {
10282                                    CursorStyle::ResizeLeftRight
10283                                }
10284                                ResizeEdge::TopLeft | ResizeEdge::BottomRight => {
10285                                    CursorStyle::ResizeUpLeftDownRight
10286                                }
10287                                ResizeEdge::TopRight | ResizeEdge::BottomLeft => {
10288                                    CursorStyle::ResizeUpRightDownLeft
10289                                }
10290                            },
10291                            &hitbox,
10292                        );
10293                    },
10294                )
10295                .size_full()
10296                .absolute(),
10297            ),
10298        })
10299}
10300
10301fn resize_edge(
10302    pos: Point<Pixels>,
10303    shadow_size: Pixels,
10304    window_size: Size<Pixels>,
10305    tiling: Tiling,
10306) -> Option<ResizeEdge> {
10307    let bounds = Bounds::new(Point::default(), window_size).inset(shadow_size * 1.5);
10308    if bounds.contains(&pos) {
10309        return None;
10310    }
10311
10312    let corner_size = size(shadow_size * 1.5, shadow_size * 1.5);
10313    let top_left_bounds = Bounds::new(Point::new(px(0.), px(0.)), corner_size);
10314    if !tiling.top && top_left_bounds.contains(&pos) {
10315        return Some(ResizeEdge::TopLeft);
10316    }
10317
10318    let top_right_bounds = Bounds::new(
10319        Point::new(window_size.width - corner_size.width, px(0.)),
10320        corner_size,
10321    );
10322    if !tiling.top && top_right_bounds.contains(&pos) {
10323        return Some(ResizeEdge::TopRight);
10324    }
10325
10326    let bottom_left_bounds = Bounds::new(
10327        Point::new(px(0.), window_size.height - corner_size.height),
10328        corner_size,
10329    );
10330    if !tiling.bottom && bottom_left_bounds.contains(&pos) {
10331        return Some(ResizeEdge::BottomLeft);
10332    }
10333
10334    let bottom_right_bounds = Bounds::new(
10335        Point::new(
10336            window_size.width - corner_size.width,
10337            window_size.height - corner_size.height,
10338        ),
10339        corner_size,
10340    );
10341    if !tiling.bottom && bottom_right_bounds.contains(&pos) {
10342        return Some(ResizeEdge::BottomRight);
10343    }
10344
10345    if !tiling.top && pos.y < shadow_size {
10346        Some(ResizeEdge::Top)
10347    } else if !tiling.bottom && pos.y > window_size.height - shadow_size {
10348        Some(ResizeEdge::Bottom)
10349    } else if !tiling.left && pos.x < shadow_size {
10350        Some(ResizeEdge::Left)
10351    } else if !tiling.right && pos.x > window_size.width - shadow_size {
10352        Some(ResizeEdge::Right)
10353    } else {
10354        None
10355    }
10356}
10357
10358fn join_pane_into_active(
10359    active_pane: &Entity<Pane>,
10360    pane: &Entity<Pane>,
10361    window: &mut Window,
10362    cx: &mut App,
10363) {
10364    if pane == active_pane {
10365    } else if pane.read(cx).items_len() == 0 {
10366        pane.update(cx, |_, cx| {
10367            cx.emit(pane::Event::Remove {
10368                focus_on_pane: None,
10369            });
10370        })
10371    } else {
10372        move_all_items(pane, active_pane, window, cx);
10373    }
10374}
10375
10376fn move_all_items(
10377    from_pane: &Entity<Pane>,
10378    to_pane: &Entity<Pane>,
10379    window: &mut Window,
10380    cx: &mut App,
10381) {
10382    let destination_is_different = from_pane != to_pane;
10383    let mut moved_items = 0;
10384    for (item_ix, item_handle) in from_pane
10385        .read(cx)
10386        .items()
10387        .enumerate()
10388        .map(|(ix, item)| (ix, item.clone()))
10389        .collect::<Vec<_>>()
10390    {
10391        let ix = item_ix - moved_items;
10392        if destination_is_different {
10393            // Close item from previous pane
10394            from_pane.update(cx, |source, cx| {
10395                source.remove_item_and_focus_on_pane(ix, false, to_pane.clone(), window, cx);
10396            });
10397            moved_items += 1;
10398        }
10399
10400        // This automatically removes duplicate items in the pane
10401        to_pane.update(cx, |destination, cx| {
10402            destination.add_item(item_handle, true, true, None, window, cx);
10403            window.focus(&destination.focus_handle(cx), cx)
10404        });
10405    }
10406}
10407
10408pub fn move_item(
10409    source: &Entity<Pane>,
10410    destination: &Entity<Pane>,
10411    item_id_to_move: EntityId,
10412    destination_index: usize,
10413    activate: bool,
10414    window: &mut Window,
10415    cx: &mut App,
10416) {
10417    let Some((item_ix, item_handle)) = source
10418        .read(cx)
10419        .items()
10420        .enumerate()
10421        .find(|(_, item_handle)| item_handle.item_id() == item_id_to_move)
10422        .map(|(ix, item)| (ix, item.clone()))
10423    else {
10424        // Tab was closed during drag
10425        return;
10426    };
10427
10428    if source != destination {
10429        // Close item from previous pane
10430        source.update(cx, |source, cx| {
10431            source.remove_item_and_focus_on_pane(item_ix, false, destination.clone(), window, cx);
10432        });
10433    }
10434
10435    // This automatically removes duplicate items in the pane
10436    destination.update(cx, |destination, cx| {
10437        destination.add_item_inner(
10438            item_handle,
10439            activate,
10440            activate,
10441            activate,
10442            Some(destination_index),
10443            window,
10444            cx,
10445        );
10446        if activate {
10447            window.focus(&destination.focus_handle(cx), cx)
10448        }
10449    });
10450}
10451
10452pub fn move_active_item(
10453    source: &Entity<Pane>,
10454    destination: &Entity<Pane>,
10455    focus_destination: bool,
10456    close_if_empty: bool,
10457    window: &mut Window,
10458    cx: &mut App,
10459) {
10460    if source == destination {
10461        return;
10462    }
10463    let Some(active_item) = source.read(cx).active_item() else {
10464        return;
10465    };
10466    source.update(cx, |source_pane, cx| {
10467        let item_id = active_item.item_id();
10468        source_pane.remove_item(item_id, false, close_if_empty, window, cx);
10469        destination.update(cx, |target_pane, cx| {
10470            target_pane.add_item(
10471                active_item,
10472                focus_destination,
10473                focus_destination,
10474                Some(target_pane.items_len()),
10475                window,
10476                cx,
10477            );
10478        });
10479    });
10480}
10481
10482pub fn clone_active_item(
10483    workspace_id: Option<WorkspaceId>,
10484    source: &Entity<Pane>,
10485    destination: &Entity<Pane>,
10486    focus_destination: bool,
10487    window: &mut Window,
10488    cx: &mut App,
10489) {
10490    if source == destination {
10491        return;
10492    }
10493    let Some(active_item) = source.read(cx).active_item() else {
10494        return;
10495    };
10496    if !active_item.can_split(cx) {
10497        return;
10498    }
10499    let destination = destination.downgrade();
10500    let task = active_item.clone_on_split(workspace_id, window, cx);
10501    window
10502        .spawn(cx, async move |cx| {
10503            let Some(clone) = task.await else {
10504                return;
10505            };
10506            destination
10507                .update_in(cx, |target_pane, window, cx| {
10508                    target_pane.add_item(
10509                        clone,
10510                        focus_destination,
10511                        focus_destination,
10512                        Some(target_pane.items_len()),
10513                        window,
10514                        cx,
10515                    );
10516                })
10517                .log_err();
10518        })
10519        .detach();
10520}
10521
10522#[derive(Debug)]
10523pub struct WorkspacePosition {
10524    pub window_bounds: Option<WindowBounds>,
10525    pub display: Option<Uuid>,
10526    pub centered_layout: bool,
10527}
10528
10529pub fn remote_workspace_position_from_db(
10530    connection_options: RemoteConnectionOptions,
10531    paths_to_open: &[PathBuf],
10532    cx: &App,
10533) -> Task<Result<WorkspacePosition>> {
10534    let paths = paths_to_open.to_vec();
10535    let db = WorkspaceDb::global(cx);
10536    let kvp = db::kvp::KeyValueStore::global(cx);
10537
10538    cx.background_spawn(async move {
10539        let remote_connection_id = db
10540            .get_or_create_remote_connection(connection_options)
10541            .await
10542            .context("fetching serialized ssh project")?;
10543        let serialized_workspace = db.remote_workspace_for_roots(&paths, remote_connection_id);
10544
10545        let (window_bounds, display) = if let Some(bounds) = window_bounds_env_override() {
10546            (Some(WindowBounds::Windowed(bounds)), None)
10547        } else {
10548            let restorable_bounds = serialized_workspace
10549                .as_ref()
10550                .and_then(|workspace| {
10551                    Some((workspace.display?, workspace.window_bounds.map(|b| b.0)?))
10552                })
10553                .or_else(|| persistence::read_default_window_bounds(&kvp));
10554
10555            if let Some((serialized_display, serialized_bounds)) = restorable_bounds {
10556                (Some(serialized_bounds), Some(serialized_display))
10557            } else {
10558                (None, None)
10559            }
10560        };
10561
10562        let centered_layout = serialized_workspace
10563            .as_ref()
10564            .map(|w| w.centered_layout)
10565            .unwrap_or(false);
10566
10567        Ok(WorkspacePosition {
10568            window_bounds,
10569            display,
10570            centered_layout,
10571        })
10572    })
10573}
10574
10575pub fn with_active_or_new_workspace(
10576    cx: &mut App,
10577    f: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send + 'static,
10578) {
10579    match cx
10580        .active_window()
10581        .and_then(|w| w.downcast::<MultiWorkspace>())
10582    {
10583        Some(multi_workspace) => {
10584            cx.defer(move |cx| {
10585                multi_workspace
10586                    .update(cx, |multi_workspace, window, cx| {
10587                        let workspace = multi_workspace.workspace().clone();
10588                        workspace.update(cx, |workspace, cx| f(workspace, window, cx));
10589                    })
10590                    .log_err();
10591            });
10592        }
10593        None => {
10594            let app_state = AppState::global(cx);
10595            open_new(
10596                OpenOptions::default(),
10597                app_state,
10598                cx,
10599                move |workspace, window, cx| f(workspace, window, cx),
10600            )
10601            .detach_and_log_err(cx);
10602        }
10603    }
10604}
10605
10606/// Reads a panel's pixel size from its legacy KVP format and deletes the legacy
10607/// key. This migration path only runs once per panel per workspace.
10608fn load_legacy_panel_size(
10609    panel_key: &str,
10610    dock_position: DockPosition,
10611    workspace: &Workspace,
10612    cx: &mut App,
10613) -> Option<Pixels> {
10614    #[derive(Deserialize)]
10615    struct LegacyPanelState {
10616        #[serde(default)]
10617        width: Option<Pixels>,
10618        #[serde(default)]
10619        height: Option<Pixels>,
10620    }
10621
10622    let workspace_id = workspace
10623        .database_id()
10624        .map(|id| i64::from(id).to_string())
10625        .or_else(|| workspace.session_id())?;
10626
10627    let legacy_key = match panel_key {
10628        "ProjectPanel" => {
10629            format!("{}-{:?}", "ProjectPanel", workspace_id)
10630        }
10631        "OutlinePanel" => {
10632            format!("{}-{:?}", "OutlinePanel", workspace_id)
10633        }
10634        "GitPanel" => {
10635            format!("{}-{:?}", "GitPanel", workspace_id)
10636        }
10637        "TerminalPanel" => {
10638            format!("{:?}-{:?}", "TerminalPanel", workspace_id)
10639        }
10640        _ => return None,
10641    };
10642
10643    let kvp = db::kvp::KeyValueStore::global(cx);
10644    let json = kvp.read_kvp(&legacy_key).log_err().flatten()?;
10645    let state = serde_json::from_str::<LegacyPanelState>(&json).log_err()?;
10646    let size = match dock_position {
10647        DockPosition::Bottom => state.height,
10648        DockPosition::Left | DockPosition::Right => state.width,
10649    }?;
10650
10651    cx.background_spawn(async move { kvp.delete_kvp(legacy_key).await })
10652        .detach_and_log_err(cx);
10653
10654    Some(size)
10655}
10656
10657#[cfg(test)]
10658mod tests {
10659    use std::{cell::RefCell, rc::Rc, sync::Arc, time::Duration};
10660
10661    use super::*;
10662    use crate::{
10663        dock::{PanelEvent, test::TestPanel},
10664        item::{
10665            ItemBufferKind, ItemEvent,
10666            test::{TestItem, TestProjectItem},
10667        },
10668    };
10669    use fs::FakeFs;
10670    use gpui::{
10671        DismissEvent, Empty, EventEmitter, FocusHandle, Focusable, Render, TestAppContext,
10672        UpdateGlobal, VisualTestContext, px,
10673    };
10674    use project::{Project, ProjectEntryId};
10675    use serde_json::json;
10676    use settings::SettingsStore;
10677    use util::path;
10678    use util::rel_path::rel_path;
10679
10680    #[gpui::test]
10681    async fn test_tab_disambiguation(cx: &mut TestAppContext) {
10682        init_test(cx);
10683
10684        let fs = FakeFs::new(cx.executor());
10685        let project = Project::test(fs, [], cx).await;
10686        let (workspace, cx) =
10687            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10688
10689        // Adding an item with no ambiguity renders the tab without detail.
10690        let item1 = cx.new(|cx| {
10691            let mut item = TestItem::new(cx);
10692            item.tab_descriptions = Some(vec!["c", "b1/c", "a/b1/c"]);
10693            item
10694        });
10695        workspace.update_in(cx, |workspace, window, cx| {
10696            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
10697        });
10698        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(0)));
10699
10700        // Adding an item that creates ambiguity increases the level of detail on
10701        // both tabs.
10702        let item2 = cx.new_window_entity(|_window, cx| {
10703            let mut item = TestItem::new(cx);
10704            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
10705            item
10706        });
10707        workspace.update_in(cx, |workspace, window, cx| {
10708            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
10709        });
10710        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
10711        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
10712
10713        // Adding an item that creates ambiguity increases the level of detail only
10714        // on the ambiguous tabs. In this case, the ambiguity can't be resolved so
10715        // we stop at the highest detail available.
10716        let item3 = cx.new(|cx| {
10717            let mut item = TestItem::new(cx);
10718            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
10719            item
10720        });
10721        workspace.update_in(cx, |workspace, window, cx| {
10722            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
10723        });
10724        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
10725        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
10726        item3.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
10727    }
10728
10729    #[gpui::test]
10730    async fn test_tracking_active_path(cx: &mut TestAppContext) {
10731        init_test(cx);
10732
10733        let fs = FakeFs::new(cx.executor());
10734        fs.insert_tree(
10735            "/root1",
10736            json!({
10737                "one.txt": "",
10738                "two.txt": "",
10739            }),
10740        )
10741        .await;
10742        fs.insert_tree(
10743            "/root2",
10744            json!({
10745                "three.txt": "",
10746            }),
10747        )
10748        .await;
10749
10750        let project = Project::test(fs, ["root1".as_ref()], cx).await;
10751        let (workspace, cx) =
10752            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10753        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10754        let worktree_id = project.update(cx, |project, cx| {
10755            project.worktrees(cx).next().unwrap().read(cx).id()
10756        });
10757
10758        let item1 = cx.new(|cx| {
10759            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
10760        });
10761        let item2 = cx.new(|cx| {
10762            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "two.txt", cx)])
10763        });
10764
10765        // Add an item to an empty pane
10766        workspace.update_in(cx, |workspace, window, cx| {
10767            workspace.add_item_to_active_pane(Box::new(item1), None, true, window, cx)
10768        });
10769        project.update(cx, |project, cx| {
10770            assert_eq!(
10771                project.active_entry(),
10772                project
10773                    .entry_for_path(&(worktree_id, rel_path("one.txt")).into(), cx)
10774                    .map(|e| e.id)
10775            );
10776        });
10777        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
10778
10779        // Add a second item to a non-empty pane
10780        workspace.update_in(cx, |workspace, window, cx| {
10781            workspace.add_item_to_active_pane(Box::new(item2), None, true, window, cx)
10782        });
10783        assert_eq!(cx.window_title().as_deref(), Some("root1 — two.txt"));
10784        project.update(cx, |project, cx| {
10785            assert_eq!(
10786                project.active_entry(),
10787                project
10788                    .entry_for_path(&(worktree_id, rel_path("two.txt")).into(), cx)
10789                    .map(|e| e.id)
10790            );
10791        });
10792
10793        // Close the active item
10794        pane.update_in(cx, |pane, window, cx| {
10795            pane.close_active_item(&Default::default(), window, cx)
10796        })
10797        .await
10798        .unwrap();
10799        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
10800        project.update(cx, |project, cx| {
10801            assert_eq!(
10802                project.active_entry(),
10803                project
10804                    .entry_for_path(&(worktree_id, rel_path("one.txt")).into(), cx)
10805                    .map(|e| e.id)
10806            );
10807        });
10808
10809        // Add a project folder
10810        project
10811            .update(cx, |project, cx| {
10812                project.find_or_create_worktree("root2", true, cx)
10813            })
10814            .await
10815            .unwrap();
10816        assert_eq!(cx.window_title().as_deref(), Some("root1, root2 — one.txt"));
10817
10818        // Remove a project folder
10819        project.update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
10820        assert_eq!(cx.window_title().as_deref(), Some("root2 — one.txt"));
10821    }
10822
10823    #[gpui::test]
10824    async fn test_close_window(cx: &mut TestAppContext) {
10825        init_test(cx);
10826
10827        let fs = FakeFs::new(cx.executor());
10828        fs.insert_tree("/root", json!({ "one": "" })).await;
10829
10830        let project = Project::test(fs, ["root".as_ref()], cx).await;
10831        let (workspace, cx) =
10832            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10833
10834        // When there are no dirty items, there's nothing to do.
10835        let item1 = cx.new(TestItem::new);
10836        workspace.update_in(cx, |w, window, cx| {
10837            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx)
10838        });
10839        let task = workspace.update_in(cx, |w, window, cx| {
10840            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
10841        });
10842        assert!(task.await.unwrap());
10843
10844        // When there are dirty untitled items, prompt to save each one. If the user
10845        // cancels any prompt, then abort.
10846        let item2 = cx.new(|cx| TestItem::new(cx).with_dirty(true));
10847        let item3 = cx.new(|cx| {
10848            TestItem::new(cx)
10849                .with_dirty(true)
10850                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
10851        });
10852        workspace.update_in(cx, |w, window, cx| {
10853            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
10854            w.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
10855        });
10856        let task = workspace.update_in(cx, |w, window, cx| {
10857            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
10858        });
10859        cx.executor().run_until_parked();
10860        cx.simulate_prompt_answer("Cancel"); // cancel save all
10861        cx.executor().run_until_parked();
10862        assert!(!cx.has_pending_prompt());
10863        assert!(!task.await.unwrap());
10864    }
10865
10866    #[gpui::test]
10867    async fn test_multi_workspace_close_window_multiple_workspaces_cancel(cx: &mut TestAppContext) {
10868        init_test(cx);
10869
10870        let fs = FakeFs::new(cx.executor());
10871        fs.insert_tree("/root", json!({ "one": "" })).await;
10872
10873        let project_a = Project::test(fs.clone(), ["root".as_ref()], cx).await;
10874        let project_b = Project::test(fs, ["root".as_ref()], cx).await;
10875        let multi_workspace_handle =
10876            cx.add_window(|window, cx| MultiWorkspace::test_new(project_a.clone(), window, cx));
10877        cx.run_until_parked();
10878
10879        multi_workspace_handle
10880            .update(cx, |mw, _window, cx| {
10881                mw.open_sidebar(cx);
10882            })
10883            .unwrap();
10884
10885        let workspace_a = multi_workspace_handle
10886            .read_with(cx, |mw, _| mw.workspace().clone())
10887            .unwrap();
10888
10889        let workspace_b = multi_workspace_handle
10890            .update(cx, |mw, window, cx| {
10891                mw.test_add_workspace(project_b, window, cx)
10892            })
10893            .unwrap();
10894
10895        // Activate workspace A
10896        multi_workspace_handle
10897            .update(cx, |mw, window, cx| {
10898                let workspace = mw.workspaces(cx).into_iter().next().unwrap();
10899                mw.activate(workspace, window, cx);
10900            })
10901            .unwrap();
10902
10903        let cx = &mut VisualTestContext::from_window(multi_workspace_handle.into(), cx);
10904
10905        // Workspace A has a clean item
10906        let item_a = cx.new(TestItem::new);
10907        workspace_a.update_in(cx, |w, window, cx| {
10908            w.add_item_to_active_pane(Box::new(item_a.clone()), None, true, window, cx)
10909        });
10910
10911        // Workspace B has a dirty item
10912        let item_b = cx.new(|cx| TestItem::new(cx).with_dirty(true));
10913        workspace_b.update_in(cx, |w, window, cx| {
10914            w.add_item_to_active_pane(Box::new(item_b.clone()), None, true, window, cx)
10915        });
10916
10917        // Verify workspace A is active
10918        multi_workspace_handle
10919            .read_with(cx, |mw, _| {
10920                assert_eq!(mw.workspace(), &workspace_a);
10921            })
10922            .unwrap();
10923
10924        // Dispatch CloseWindow — workspace A will pass, workspace B will prompt
10925        multi_workspace_handle
10926            .update(cx, |mw, window, cx| {
10927                mw.close_window(&CloseWindow, window, cx);
10928            })
10929            .unwrap();
10930        cx.run_until_parked();
10931
10932        // Workspace B should now be active since it has dirty items that need attention
10933        multi_workspace_handle
10934            .read_with(cx, |mw, _| {
10935                assert_eq!(
10936                    mw.workspace(),
10937                    &workspace_b,
10938                    "workspace B should be activated when it prompts"
10939                );
10940            })
10941            .unwrap();
10942
10943        // User cancels the save prompt from workspace B
10944        cx.simulate_prompt_answer("Cancel");
10945        cx.run_until_parked();
10946
10947        // Window should still exist because workspace B's close was cancelled
10948        assert!(
10949            multi_workspace_handle.update(cx, |_, _, _| ()).is_ok(),
10950            "window should still exist after cancelling one workspace's close"
10951        );
10952    }
10953
10954    #[gpui::test]
10955    async fn test_remove_workspace_prompts_for_unsaved_changes(cx: &mut TestAppContext) {
10956        init_test(cx);
10957
10958        let fs = FakeFs::new(cx.executor());
10959        fs.insert_tree("/root", json!({ "one": "" })).await;
10960
10961        let project_a = Project::test(fs.clone(), ["root".as_ref()], cx).await;
10962        let project_b = Project::test(fs.clone(), ["root".as_ref()], cx).await;
10963        let multi_workspace_handle =
10964            cx.add_window(|window, cx| MultiWorkspace::test_new(project_a.clone(), window, cx));
10965        cx.run_until_parked();
10966
10967        multi_workspace_handle
10968            .update(cx, |mw, _window, cx| mw.open_sidebar(cx))
10969            .unwrap();
10970
10971        let workspace_a = multi_workspace_handle
10972            .read_with(cx, |mw, _| mw.workspace().clone())
10973            .unwrap();
10974
10975        let workspace_b = multi_workspace_handle
10976            .update(cx, |mw, window, cx| {
10977                mw.test_add_workspace(project_b, window, cx)
10978            })
10979            .unwrap();
10980
10981        // Activate workspace A.
10982        multi_workspace_handle
10983            .update(cx, |mw, window, cx| {
10984                mw.activate(workspace_a.clone(), window, cx);
10985            })
10986            .unwrap();
10987
10988        let cx = &mut VisualTestContext::from_window(multi_workspace_handle.into(), cx);
10989
10990        // Workspace B has a dirty item.
10991        let item_b = cx.new(|cx| TestItem::new(cx).with_dirty(true));
10992        workspace_b.update_in(cx, |w, window, cx| {
10993            w.add_item_to_active_pane(Box::new(item_b.clone()), None, true, window, cx)
10994        });
10995
10996        // Try to remove workspace B. It should prompt because of the dirty item.
10997        let remove_task = multi_workspace_handle
10998            .update(cx, |mw, window, cx| {
10999                mw.remove([workspace_b.clone()], |_, _, _| unreachable!(), window, cx)
11000            })
11001            .unwrap();
11002        cx.run_until_parked();
11003
11004        // The prompt should have activated workspace B.
11005        multi_workspace_handle
11006            .read_with(cx, |mw, _| {
11007                assert_eq!(
11008                    mw.workspace(),
11009                    &workspace_b,
11010                    "workspace B should be active while prompting"
11011                );
11012            })
11013            .unwrap();
11014
11015        // Cancel the prompt — user stays on workspace B.
11016        cx.simulate_prompt_answer("Cancel");
11017        cx.run_until_parked();
11018        let removed = remove_task.await.unwrap();
11019        assert!(!removed, "removal should have been cancelled");
11020
11021        multi_workspace_handle
11022            .read_with(cx, |mw, cx| {
11023                assert_eq!(
11024                    mw.workspace(),
11025                    &workspace_b,
11026                    "user should stay on workspace B after cancelling"
11027                );
11028                assert_eq!(mw.workspaces(cx).len(), 2, "both workspaces should remain");
11029            })
11030            .unwrap();
11031
11032        // Try again. This time accept the prompt.
11033        let remove_task = multi_workspace_handle
11034            .update(cx, |mw, window, cx| {
11035                // First switch back to A.
11036                mw.activate(workspace_a.clone(), window, cx);
11037                mw.remove([workspace_b.clone()], |_, _, _| unreachable!(), window, cx)
11038            })
11039            .unwrap();
11040        cx.run_until_parked();
11041
11042        // Accept the save prompt.
11043        cx.simulate_prompt_answer("Don't Save");
11044        cx.run_until_parked();
11045        let removed = remove_task.await.unwrap();
11046        assert!(removed, "removal should have succeeded");
11047
11048        // Should be back on workspace A, and B should be gone.
11049        multi_workspace_handle
11050            .read_with(cx, |mw, cx| {
11051                assert_eq!(
11052                    mw.workspace(),
11053                    &workspace_a,
11054                    "should be back on workspace A after removing B"
11055                );
11056                assert_eq!(mw.workspaces(cx).len(), 1, "only workspace A should remain");
11057            })
11058            .unwrap();
11059    }
11060
11061    #[gpui::test]
11062    async fn test_close_window_with_serializable_items(cx: &mut TestAppContext) {
11063        init_test(cx);
11064
11065        // Register TestItem as a serializable item
11066        cx.update(|cx| {
11067            register_serializable_item::<TestItem>(cx);
11068        });
11069
11070        let fs = FakeFs::new(cx.executor());
11071        fs.insert_tree("/root", json!({ "one": "" })).await;
11072
11073        let project = Project::test(fs, ["root".as_ref()], cx).await;
11074        let (workspace, cx) =
11075            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
11076
11077        // When there are dirty untitled items, but they can serialize, then there is no prompt.
11078        let item1 = cx.new(|cx| {
11079            TestItem::new(cx)
11080                .with_dirty(true)
11081                .with_serialize(|| Some(Task::ready(Ok(()))))
11082        });
11083        let item2 = cx.new(|cx| {
11084            TestItem::new(cx)
11085                .with_dirty(true)
11086                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
11087                .with_serialize(|| Some(Task::ready(Ok(()))))
11088        });
11089        workspace.update_in(cx, |w, window, cx| {
11090            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
11091            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
11092        });
11093        let task = workspace.update_in(cx, |w, window, cx| {
11094            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
11095        });
11096        assert!(task.await.unwrap());
11097    }
11098
11099    #[gpui::test]
11100    async fn test_close_pane_items(cx: &mut TestAppContext) {
11101        init_test(cx);
11102
11103        let fs = FakeFs::new(cx.executor());
11104
11105        let project = Project::test(fs, None, cx).await;
11106        let (workspace, cx) =
11107            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11108
11109        let item1 = cx.new(|cx| {
11110            TestItem::new(cx)
11111                .with_dirty(true)
11112                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
11113        });
11114        let item2 = cx.new(|cx| {
11115            TestItem::new(cx)
11116                .with_dirty(true)
11117                .with_conflict(true)
11118                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
11119        });
11120        let item3 = cx.new(|cx| {
11121            TestItem::new(cx)
11122                .with_dirty(true)
11123                .with_conflict(true)
11124                .with_project_items(&[dirty_project_item(3, "3.txt", cx)])
11125        });
11126        let item4 = cx.new(|cx| {
11127            TestItem::new(cx).with_dirty(true).with_project_items(&[{
11128                let project_item = TestProjectItem::new_untitled(cx);
11129                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
11130                project_item
11131            }])
11132        });
11133        let pane = workspace.update_in(cx, |workspace, window, cx| {
11134            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
11135            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
11136            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
11137            workspace.add_item_to_active_pane(Box::new(item4.clone()), None, true, window, cx);
11138            workspace.active_pane().clone()
11139        });
11140
11141        let close_items = pane.update_in(cx, |pane, window, cx| {
11142            pane.activate_item(1, true, true, window, cx);
11143            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
11144            let item1_id = item1.item_id();
11145            let item3_id = item3.item_id();
11146            let item4_id = item4.item_id();
11147            pane.close_items(window, cx, SaveIntent::Close, &move |id| {
11148                [item1_id, item3_id, item4_id].contains(&id)
11149            })
11150        });
11151        cx.executor().run_until_parked();
11152
11153        assert!(cx.has_pending_prompt());
11154        cx.simulate_prompt_answer("Save all");
11155
11156        cx.executor().run_until_parked();
11157
11158        // Item 1 is saved. There's a prompt to save item 3.
11159        pane.update(cx, |pane, cx| {
11160            assert_eq!(item1.read(cx).save_count, 1);
11161            assert_eq!(item1.read(cx).save_as_count, 0);
11162            assert_eq!(item1.read(cx).reload_count, 0);
11163            assert_eq!(pane.items_len(), 3);
11164            assert_eq!(pane.active_item().unwrap().item_id(), item3.item_id());
11165        });
11166        assert!(cx.has_pending_prompt());
11167
11168        // Cancel saving item 3.
11169        cx.simulate_prompt_answer("Discard");
11170        cx.executor().run_until_parked();
11171
11172        // Item 3 is reloaded. There's a prompt to save item 4.
11173        pane.update(cx, |pane, cx| {
11174            assert_eq!(item3.read(cx).save_count, 0);
11175            assert_eq!(item3.read(cx).save_as_count, 0);
11176            assert_eq!(item3.read(cx).reload_count, 1);
11177            assert_eq!(pane.items_len(), 2);
11178            assert_eq!(pane.active_item().unwrap().item_id(), item4.item_id());
11179        });
11180
11181        // There's a prompt for a path for item 4.
11182        cx.simulate_new_path_selection(|_| Some(Default::default()));
11183        close_items.await.unwrap();
11184
11185        // The requested items are closed.
11186        pane.update(cx, |pane, cx| {
11187            assert_eq!(item4.read(cx).save_count, 0);
11188            assert_eq!(item4.read(cx).save_as_count, 1);
11189            assert_eq!(item4.read(cx).reload_count, 0);
11190            assert_eq!(pane.items_len(), 1);
11191            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
11192        });
11193    }
11194
11195    #[gpui::test]
11196    async fn test_prompting_to_save_only_on_last_item_for_entry(cx: &mut TestAppContext) {
11197        init_test(cx);
11198
11199        let fs = FakeFs::new(cx.executor());
11200        let project = Project::test(fs, [], cx).await;
11201        let (workspace, cx) =
11202            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11203
11204        // Create several workspace items with single project entries, and two
11205        // workspace items with multiple project entries.
11206        let single_entry_items = (0..=4)
11207            .map(|project_entry_id| {
11208                cx.new(|cx| {
11209                    TestItem::new(cx)
11210                        .with_dirty(true)
11211                        .with_project_items(&[dirty_project_item(
11212                            project_entry_id,
11213                            &format!("{project_entry_id}.txt"),
11214                            cx,
11215                        )])
11216                })
11217            })
11218            .collect::<Vec<_>>();
11219        let item_2_3 = cx.new(|cx| {
11220            TestItem::new(cx)
11221                .with_dirty(true)
11222                .with_buffer_kind(ItemBufferKind::Multibuffer)
11223                .with_project_items(&[
11224                    single_entry_items[2].read(cx).project_items[0].clone(),
11225                    single_entry_items[3].read(cx).project_items[0].clone(),
11226                ])
11227        });
11228        let item_3_4 = cx.new(|cx| {
11229            TestItem::new(cx)
11230                .with_dirty(true)
11231                .with_buffer_kind(ItemBufferKind::Multibuffer)
11232                .with_project_items(&[
11233                    single_entry_items[3].read(cx).project_items[0].clone(),
11234                    single_entry_items[4].read(cx).project_items[0].clone(),
11235                ])
11236        });
11237
11238        // Create two panes that contain the following project entries:
11239        //   left pane:
11240        //     multi-entry items:   (2, 3)
11241        //     single-entry items:  0, 2, 3, 4
11242        //   right pane:
11243        //     single-entry items:  4, 1
11244        //     multi-entry items:   (3, 4)
11245        let (left_pane, right_pane) = workspace.update_in(cx, |workspace, window, cx| {
11246            let left_pane = workspace.active_pane().clone();
11247            workspace.add_item_to_active_pane(Box::new(item_2_3.clone()), None, true, window, cx);
11248            workspace.add_item_to_active_pane(
11249                single_entry_items[0].boxed_clone(),
11250                None,
11251                true,
11252                window,
11253                cx,
11254            );
11255            workspace.add_item_to_active_pane(
11256                single_entry_items[2].boxed_clone(),
11257                None,
11258                true,
11259                window,
11260                cx,
11261            );
11262            workspace.add_item_to_active_pane(
11263                single_entry_items[3].boxed_clone(),
11264                None,
11265                true,
11266                window,
11267                cx,
11268            );
11269            workspace.add_item_to_active_pane(
11270                single_entry_items[4].boxed_clone(),
11271                None,
11272                true,
11273                window,
11274                cx,
11275            );
11276
11277            let right_pane =
11278                workspace.split_and_clone(left_pane.clone(), SplitDirection::Right, window, cx);
11279
11280            let boxed_clone = single_entry_items[1].boxed_clone();
11281            let right_pane = window.spawn(cx, async move |cx| {
11282                right_pane.await.inspect(|right_pane| {
11283                    right_pane
11284                        .update_in(cx, |pane, window, cx| {
11285                            pane.add_item(boxed_clone, true, true, None, window, cx);
11286                            pane.add_item(Box::new(item_3_4.clone()), true, true, None, window, cx);
11287                        })
11288                        .unwrap();
11289                })
11290            });
11291
11292            (left_pane, right_pane)
11293        });
11294        let right_pane = right_pane.await.unwrap();
11295        cx.focus(&right_pane);
11296
11297        let close = right_pane.update_in(cx, |pane, window, cx| {
11298            pane.close_all_items(&CloseAllItems::default(), window, cx)
11299                .unwrap()
11300        });
11301        cx.executor().run_until_parked();
11302
11303        let msg = cx.pending_prompt().unwrap().0;
11304        assert!(msg.contains("1.txt"));
11305        assert!(!msg.contains("2.txt"));
11306        assert!(!msg.contains("3.txt"));
11307        assert!(!msg.contains("4.txt"));
11308
11309        // With best-effort close, cancelling item 1 keeps it open but items 4
11310        // and (3,4) still close since their entries exist in left pane.
11311        cx.simulate_prompt_answer("Cancel");
11312        close.await;
11313
11314        right_pane.read_with(cx, |pane, _| {
11315            assert_eq!(pane.items_len(), 1);
11316        });
11317
11318        // Remove item 3 from left pane, making (2,3) the only item with entry 3.
11319        left_pane
11320            .update_in(cx, |left_pane, window, cx| {
11321                left_pane.close_item_by_id(
11322                    single_entry_items[3].entity_id(),
11323                    SaveIntent::Skip,
11324                    window,
11325                    cx,
11326                )
11327            })
11328            .await
11329            .unwrap();
11330
11331        let close = left_pane.update_in(cx, |pane, window, cx| {
11332            pane.close_all_items(&CloseAllItems::default(), window, cx)
11333                .unwrap()
11334        });
11335        cx.executor().run_until_parked();
11336
11337        let details = cx.pending_prompt().unwrap().1;
11338        assert!(details.contains("0.txt"));
11339        assert!(details.contains("3.txt"));
11340        assert!(details.contains("4.txt"));
11341        // Ideally 2.txt wouldn't appear since entry 2 still exists in item 2.
11342        // But we can only save whole items, so saving (2,3) for entry 3 includes 2.
11343        // assert!(!details.contains("2.txt"));
11344
11345        cx.simulate_prompt_answer("Save all");
11346        cx.executor().run_until_parked();
11347        close.await;
11348
11349        left_pane.read_with(cx, |pane, _| {
11350            assert_eq!(pane.items_len(), 0);
11351        });
11352    }
11353
11354    #[gpui::test]
11355    async fn test_autosave(cx: &mut gpui::TestAppContext) {
11356        init_test(cx);
11357
11358        let fs = FakeFs::new(cx.executor());
11359        let project = Project::test(fs, [], cx).await;
11360        let (workspace, cx) =
11361            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11362        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11363
11364        let item = cx.new(|cx| {
11365            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
11366        });
11367        let item_id = item.entity_id();
11368        workspace.update_in(cx, |workspace, window, cx| {
11369            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
11370        });
11371
11372        // Autosave on window change.
11373        item.update(cx, |item, cx| {
11374            SettingsStore::update_global(cx, |settings, cx| {
11375                settings.update_user_settings(cx, |settings| {
11376                    settings.workspace.autosave = Some(AutosaveSetting::OnWindowChange);
11377                })
11378            });
11379            item.is_dirty = true;
11380        });
11381
11382        // Deactivating the window saves the file.
11383        cx.deactivate_window();
11384        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
11385
11386        // Re-activating the window doesn't save the file.
11387        cx.update(|window, _| window.activate_window());
11388        cx.executor().run_until_parked();
11389        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
11390
11391        // Autosave on focus change.
11392        item.update_in(cx, |item, window, cx| {
11393            cx.focus_self(window);
11394            SettingsStore::update_global(cx, |settings, cx| {
11395                settings.update_user_settings(cx, |settings| {
11396                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
11397                })
11398            });
11399            item.is_dirty = true;
11400        });
11401        // Blurring the item saves the file.
11402        item.update_in(cx, |_, window, _| window.blur());
11403        cx.executor().run_until_parked();
11404        item.read_with(cx, |item, _| assert_eq!(item.save_count, 2));
11405
11406        // Deactivating the window still saves the file.
11407        item.update_in(cx, |item, window, cx| {
11408            cx.focus_self(window);
11409            item.is_dirty = true;
11410        });
11411        cx.deactivate_window();
11412        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
11413
11414        // Autosave after delay.
11415        item.update(cx, |item, cx| {
11416            SettingsStore::update_global(cx, |settings, cx| {
11417                settings.update_user_settings(cx, |settings| {
11418                    settings.workspace.autosave = Some(AutosaveSetting::AfterDelay {
11419                        milliseconds: 500.into(),
11420                    });
11421                })
11422            });
11423            item.is_dirty = true;
11424            cx.emit(ItemEvent::Edit);
11425        });
11426
11427        // Delay hasn't fully expired, so the file is still dirty and unsaved.
11428        cx.executor().advance_clock(Duration::from_millis(250));
11429        item.read_with(cx, |item, _| assert_eq!(item.save_count, 3));
11430
11431        // After delay expires, the file is saved.
11432        cx.executor().advance_clock(Duration::from_millis(250));
11433        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
11434
11435        // Autosave after delay, should save earlier than delay if tab is closed
11436        item.update(cx, |item, cx| {
11437            item.is_dirty = true;
11438            cx.emit(ItemEvent::Edit);
11439        });
11440        cx.executor().advance_clock(Duration::from_millis(250));
11441        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
11442
11443        // // Ensure auto save with delay saves the item on close, even if the timer hasn't yet run out.
11444        pane.update_in(cx, |pane, window, cx| {
11445            pane.close_items(window, cx, SaveIntent::Close, &move |id| id == item_id)
11446        })
11447        .await
11448        .unwrap();
11449        assert!(!cx.has_pending_prompt());
11450        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
11451
11452        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
11453        workspace.update_in(cx, |workspace, window, cx| {
11454            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
11455        });
11456        item.update_in(cx, |item, _window, cx| {
11457            item.is_dirty = true;
11458            for project_item in &mut item.project_items {
11459                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
11460            }
11461        });
11462        cx.run_until_parked();
11463        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
11464
11465        // Autosave on focus change, ensuring closing the tab counts as such.
11466        item.update(cx, |item, cx| {
11467            SettingsStore::update_global(cx, |settings, cx| {
11468                settings.update_user_settings(cx, |settings| {
11469                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
11470                })
11471            });
11472            item.is_dirty = true;
11473            for project_item in &mut item.project_items {
11474                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
11475            }
11476        });
11477
11478        pane.update_in(cx, |pane, window, cx| {
11479            pane.close_items(window, cx, SaveIntent::Close, &move |id| id == item_id)
11480        })
11481        .await
11482        .unwrap();
11483        assert!(!cx.has_pending_prompt());
11484        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
11485
11486        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
11487        workspace.update_in(cx, |workspace, window, cx| {
11488            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
11489        });
11490        item.update_in(cx, |item, window, cx| {
11491            item.project_items[0].update(cx, |item, _| {
11492                item.entry_id = None;
11493            });
11494            item.is_dirty = true;
11495            window.blur();
11496        });
11497        cx.run_until_parked();
11498        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
11499
11500        // Ensure autosave is prevented for deleted files also when closing the buffer.
11501        let _close_items = pane.update_in(cx, |pane, window, cx| {
11502            pane.close_items(window, cx, SaveIntent::Close, &move |id| id == item_id)
11503        });
11504        cx.run_until_parked();
11505        assert!(cx.has_pending_prompt());
11506        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
11507    }
11508
11509    #[gpui::test]
11510    async fn test_autosave_on_focus_change_in_multibuffer(cx: &mut gpui::TestAppContext) {
11511        init_test(cx);
11512
11513        let fs = FakeFs::new(cx.executor());
11514        let project = Project::test(fs, [], cx).await;
11515        let (workspace, cx) =
11516            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11517
11518        // Create a multibuffer-like item with two child focus handles,
11519        // simulating individual buffer editors within a multibuffer.
11520        let item = cx.new(|cx| {
11521            TestItem::new(cx)
11522                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
11523                .with_child_focus_handles(2, cx)
11524        });
11525        workspace.update_in(cx, |workspace, window, cx| {
11526            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
11527        });
11528
11529        // Set autosave to OnFocusChange and focus the first child handle,
11530        // simulating the user's cursor being inside one of the multibuffer's excerpts.
11531        item.update_in(cx, |item, window, cx| {
11532            SettingsStore::update_global(cx, |settings, cx| {
11533                settings.update_user_settings(cx, |settings| {
11534                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
11535                })
11536            });
11537            item.is_dirty = true;
11538            window.focus(&item.child_focus_handles[0], cx);
11539        });
11540        cx.executor().run_until_parked();
11541        item.read_with(cx, |item, _| assert_eq!(item.save_count, 0));
11542
11543        // Moving focus from one child to another within the same item should
11544        // NOT trigger autosave — focus is still within the item's focus hierarchy.
11545        item.update_in(cx, |item, window, cx| {
11546            window.focus(&item.child_focus_handles[1], cx);
11547        });
11548        cx.executor().run_until_parked();
11549        item.read_with(cx, |item, _| {
11550            assert_eq!(
11551                item.save_count, 0,
11552                "Switching focus between children within the same item should not autosave"
11553            );
11554        });
11555
11556        // Blurring the item saves the file. This is the core regression scenario:
11557        // with `on_blur`, this would NOT trigger because `on_blur` only fires when
11558        // the item's own focus handle is the leaf that lost focus. In a multibuffer,
11559        // the leaf is always a child focus handle, so `on_blur` never detected
11560        // focus leaving the item.
11561        item.update_in(cx, |_, window, _| window.blur());
11562        cx.executor().run_until_parked();
11563        item.read_with(cx, |item, _| {
11564            assert_eq!(
11565                item.save_count, 1,
11566                "Blurring should trigger autosave when focus was on a child of the item"
11567            );
11568        });
11569
11570        // Deactivating the window should also trigger autosave when a child of
11571        // the multibuffer item currently owns focus.
11572        item.update_in(cx, |item, window, cx| {
11573            item.is_dirty = true;
11574            window.focus(&item.child_focus_handles[0], cx);
11575        });
11576        cx.executor().run_until_parked();
11577        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
11578
11579        cx.deactivate_window();
11580        item.read_with(cx, |item, _| {
11581            assert_eq!(
11582                item.save_count, 2,
11583                "Deactivating window should trigger autosave when focus was on a child"
11584            );
11585        });
11586    }
11587
11588    #[gpui::test]
11589    async fn test_pane_navigation(cx: &mut gpui::TestAppContext) {
11590        init_test(cx);
11591
11592        let fs = FakeFs::new(cx.executor());
11593
11594        let project = Project::test(fs, [], cx).await;
11595        let (workspace, cx) =
11596            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11597
11598        let item = cx.new(|cx| {
11599            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
11600        });
11601        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11602        let toolbar = pane.read_with(cx, |pane, _| pane.toolbar().clone());
11603        let toolbar_notify_count = Rc::new(RefCell::new(0));
11604
11605        workspace.update_in(cx, |workspace, window, cx| {
11606            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
11607            let toolbar_notification_count = toolbar_notify_count.clone();
11608            cx.observe_in(&toolbar, window, move |_, _, _, _| {
11609                *toolbar_notification_count.borrow_mut() += 1
11610            })
11611            .detach();
11612        });
11613
11614        pane.read_with(cx, |pane, _| {
11615            assert!(!pane.can_navigate_backward());
11616            assert!(!pane.can_navigate_forward());
11617        });
11618
11619        item.update_in(cx, |item, _, cx| {
11620            item.set_state("one".to_string(), cx);
11621        });
11622
11623        // Toolbar must be notified to re-render the navigation buttons
11624        assert_eq!(*toolbar_notify_count.borrow(), 1);
11625
11626        pane.read_with(cx, |pane, _| {
11627            assert!(pane.can_navigate_backward());
11628            assert!(!pane.can_navigate_forward());
11629        });
11630
11631        workspace
11632            .update_in(cx, |workspace, window, cx| {
11633                workspace.go_back(pane.downgrade(), window, cx)
11634            })
11635            .await
11636            .unwrap();
11637
11638        assert_eq!(*toolbar_notify_count.borrow(), 2);
11639        pane.read_with(cx, |pane, _| {
11640            assert!(!pane.can_navigate_backward());
11641            assert!(pane.can_navigate_forward());
11642        });
11643    }
11644
11645    /// Tests that the navigation history deduplicates entries for the same item.
11646    ///
11647    /// When navigating back and forth between items (e.g., A -> B -> A -> B -> A -> B -> C),
11648    /// the navigation history deduplicates by keeping only the most recent visit to each item,
11649    /// resulting in [A, B, C] instead of [A, B, A, B, A, B, C]. This ensures that Go Back (Ctrl-O)
11650    /// navigates through unique items efficiently: C -> B -> A, rather than bouncing between
11651    /// repeated entries: C -> B -> A -> B -> A -> B -> A.
11652    ///
11653    /// This behavior prevents the navigation history from growing unnecessarily large and provides
11654    /// a better user experience by eliminating redundant navigation steps when jumping between files.
11655    #[gpui::test]
11656    async fn test_navigation_history_deduplication(cx: &mut gpui::TestAppContext) {
11657        init_test(cx);
11658
11659        let fs = FakeFs::new(cx.executor());
11660        let project = Project::test(fs, [], cx).await;
11661        let (workspace, cx) =
11662            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11663
11664        let item_a = cx.new(|cx| {
11665            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "a.txt", cx)])
11666        });
11667        let item_b = cx.new(|cx| {
11668            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "b.txt", cx)])
11669        });
11670        let item_c = cx.new(|cx| {
11671            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "c.txt", cx)])
11672        });
11673
11674        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11675
11676        workspace.update_in(cx, |workspace, window, cx| {
11677            workspace.add_item_to_active_pane(Box::new(item_a.clone()), None, true, window, cx);
11678            workspace.add_item_to_active_pane(Box::new(item_b.clone()), None, true, window, cx);
11679            workspace.add_item_to_active_pane(Box::new(item_c.clone()), None, true, window, cx);
11680        });
11681
11682        workspace.update_in(cx, |workspace, window, cx| {
11683            workspace.activate_item(&item_a, false, false, window, cx);
11684        });
11685        cx.run_until_parked();
11686
11687        workspace.update_in(cx, |workspace, window, cx| {
11688            workspace.activate_item(&item_b, false, false, window, cx);
11689        });
11690        cx.run_until_parked();
11691
11692        workspace.update_in(cx, |workspace, window, cx| {
11693            workspace.activate_item(&item_a, false, false, window, cx);
11694        });
11695        cx.run_until_parked();
11696
11697        workspace.update_in(cx, |workspace, window, cx| {
11698            workspace.activate_item(&item_b, false, false, window, cx);
11699        });
11700        cx.run_until_parked();
11701
11702        workspace.update_in(cx, |workspace, window, cx| {
11703            workspace.activate_item(&item_a, false, false, window, cx);
11704        });
11705        cx.run_until_parked();
11706
11707        workspace.update_in(cx, |workspace, window, cx| {
11708            workspace.activate_item(&item_b, false, false, window, cx);
11709        });
11710        cx.run_until_parked();
11711
11712        workspace.update_in(cx, |workspace, window, cx| {
11713            workspace.activate_item(&item_c, false, false, window, cx);
11714        });
11715        cx.run_until_parked();
11716
11717        let backward_count = pane.read_with(cx, |pane, cx| {
11718            let mut count = 0;
11719            pane.nav_history().for_each_entry(cx, &mut |_, _| {
11720                count += 1;
11721            });
11722            count
11723        });
11724        assert!(
11725            backward_count <= 4,
11726            "Should have at most 4 entries, got {}",
11727            backward_count
11728        );
11729
11730        workspace
11731            .update_in(cx, |workspace, window, cx| {
11732                workspace.go_back(pane.downgrade(), window, cx)
11733            })
11734            .await
11735            .unwrap();
11736
11737        let active_item = workspace.read_with(cx, |workspace, cx| {
11738            workspace.active_item(cx).unwrap().item_id()
11739        });
11740        assert_eq!(
11741            active_item,
11742            item_b.entity_id(),
11743            "After first go_back, should be at item B"
11744        );
11745
11746        workspace
11747            .update_in(cx, |workspace, window, cx| {
11748                workspace.go_back(pane.downgrade(), window, cx)
11749            })
11750            .await
11751            .unwrap();
11752
11753        let active_item = workspace.read_with(cx, |workspace, cx| {
11754            workspace.active_item(cx).unwrap().item_id()
11755        });
11756        assert_eq!(
11757            active_item,
11758            item_a.entity_id(),
11759            "After second go_back, should be at item A"
11760        );
11761
11762        pane.read_with(cx, |pane, _| {
11763            assert!(pane.can_navigate_forward(), "Should be able to go forward");
11764        });
11765    }
11766
11767    #[gpui::test]
11768    async fn test_activate_last_pane(cx: &mut gpui::TestAppContext) {
11769        init_test(cx);
11770        let fs = FakeFs::new(cx.executor());
11771        let project = Project::test(fs, [], cx).await;
11772        let (multi_workspace, cx) =
11773            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
11774        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
11775
11776        workspace.update_in(cx, |workspace, window, cx| {
11777            let first_item = cx.new(|cx| {
11778                TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
11779            });
11780            workspace.add_item_to_active_pane(Box::new(first_item), None, true, window, cx);
11781            workspace.split_pane(
11782                workspace.active_pane().clone(),
11783                SplitDirection::Right,
11784                window,
11785                cx,
11786            );
11787            workspace.split_pane(
11788                workspace.active_pane().clone(),
11789                SplitDirection::Right,
11790                window,
11791                cx,
11792            );
11793        });
11794
11795        let (first_pane_id, target_last_pane_id) = workspace.update(cx, |workspace, _cx| {
11796            let panes = workspace.center.panes();
11797            assert!(panes.len() >= 2);
11798            (
11799                panes.first().expect("at least one pane").entity_id(),
11800                panes.last().expect("at least one pane").entity_id(),
11801            )
11802        });
11803
11804        workspace.update_in(cx, |workspace, window, cx| {
11805            workspace.activate_pane_at_index(&ActivatePane(0), window, cx);
11806        });
11807        workspace.update(cx, |workspace, _| {
11808            assert_eq!(workspace.active_pane().entity_id(), first_pane_id);
11809            assert_ne!(workspace.active_pane().entity_id(), target_last_pane_id);
11810        });
11811
11812        cx.dispatch_action(ActivateLastPane);
11813
11814        workspace.update(cx, |workspace, _| {
11815            assert_eq!(workspace.active_pane().entity_id(), target_last_pane_id);
11816        });
11817    }
11818
11819    #[gpui::test]
11820    async fn test_toggle_docks_and_panels(cx: &mut gpui::TestAppContext) {
11821        init_test(cx);
11822        let fs = FakeFs::new(cx.executor());
11823
11824        let project = Project::test(fs, [], cx).await;
11825        let (workspace, cx) =
11826            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11827
11828        let panel = workspace.update_in(cx, |workspace, window, cx| {
11829            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
11830            workspace.add_panel(panel.clone(), window, cx);
11831
11832            workspace
11833                .right_dock()
11834                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
11835
11836            panel
11837        });
11838
11839        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11840        pane.update_in(cx, |pane, window, cx| {
11841            let item = cx.new(TestItem::new);
11842            pane.add_item(Box::new(item), true, true, None, window, cx);
11843        });
11844
11845        // Transfer focus from center to panel
11846        workspace.update_in(cx, |workspace, window, cx| {
11847            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11848        });
11849
11850        workspace.update_in(cx, |workspace, window, cx| {
11851            assert!(workspace.right_dock().read(cx).is_open());
11852            assert!(!panel.is_zoomed(window, cx));
11853            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11854        });
11855
11856        // Transfer focus from panel to center
11857        workspace.update_in(cx, |workspace, window, cx| {
11858            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11859        });
11860
11861        workspace.update_in(cx, |workspace, window, cx| {
11862            assert!(workspace.right_dock().read(cx).is_open());
11863            assert!(!panel.is_zoomed(window, cx));
11864            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11865            assert!(pane.read(cx).focus_handle(cx).contains_focused(window, cx));
11866        });
11867
11868        // Close the dock
11869        workspace.update_in(cx, |workspace, window, cx| {
11870            workspace.toggle_dock(DockPosition::Right, window, cx);
11871        });
11872
11873        workspace.update_in(cx, |workspace, window, cx| {
11874            assert!(!workspace.right_dock().read(cx).is_open());
11875            assert!(!panel.is_zoomed(window, cx));
11876            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11877            assert!(pane.read(cx).focus_handle(cx).contains_focused(window, cx));
11878        });
11879
11880        // Open the dock
11881        workspace.update_in(cx, |workspace, window, cx| {
11882            workspace.toggle_dock(DockPosition::Right, window, cx);
11883        });
11884
11885        workspace.update_in(cx, |workspace, window, cx| {
11886            assert!(workspace.right_dock().read(cx).is_open());
11887            assert!(!panel.is_zoomed(window, cx));
11888            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11889        });
11890
11891        // Focus and zoom panel
11892        panel.update_in(cx, |panel, window, cx| {
11893            cx.focus_self(window);
11894            panel.set_zoomed(true, window, cx)
11895        });
11896
11897        workspace.update_in(cx, |workspace, window, cx| {
11898            assert!(workspace.right_dock().read(cx).is_open());
11899            assert!(panel.is_zoomed(window, cx));
11900            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11901        });
11902
11903        // Transfer focus to the center closes the dock
11904        workspace.update_in(cx, |workspace, window, cx| {
11905            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11906        });
11907
11908        workspace.update_in(cx, |workspace, window, cx| {
11909            assert!(!workspace.right_dock().read(cx).is_open());
11910            assert!(panel.is_zoomed(window, cx));
11911            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11912        });
11913
11914        // Transferring focus back to the panel keeps it zoomed
11915        workspace.update_in(cx, |workspace, window, cx| {
11916            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11917        });
11918
11919        workspace.update_in(cx, |workspace, window, cx| {
11920            assert!(workspace.right_dock().read(cx).is_open());
11921            assert!(panel.is_zoomed(window, cx));
11922            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11923        });
11924
11925        // Close the dock while it is zoomed
11926        workspace.update_in(cx, |workspace, window, cx| {
11927            workspace.toggle_dock(DockPosition::Right, window, cx)
11928        });
11929
11930        workspace.update_in(cx, |workspace, window, cx| {
11931            assert!(!workspace.right_dock().read(cx).is_open());
11932            assert!(panel.is_zoomed(window, cx));
11933            assert!(workspace.zoomed.is_none());
11934            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11935        });
11936
11937        // Opening the dock, when it's zoomed, retains focus
11938        workspace.update_in(cx, |workspace, window, cx| {
11939            workspace.toggle_dock(DockPosition::Right, window, cx)
11940        });
11941
11942        workspace.update_in(cx, |workspace, window, cx| {
11943            assert!(workspace.right_dock().read(cx).is_open());
11944            assert!(panel.is_zoomed(window, cx));
11945            assert!(workspace.zoomed.is_some());
11946            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11947        });
11948
11949        // Unzoom and close the panel, zoom the active pane.
11950        panel.update_in(cx, |panel, window, cx| panel.set_zoomed(false, window, cx));
11951        workspace.update_in(cx, |workspace, window, cx| {
11952            workspace.toggle_dock(DockPosition::Right, window, cx)
11953        });
11954        pane.update_in(cx, |pane, window, cx| {
11955            pane.toggle_zoom(&Default::default(), window, cx)
11956        });
11957
11958        // Opening a dock unzooms the pane.
11959        workspace.update_in(cx, |workspace, window, cx| {
11960            workspace.toggle_dock(DockPosition::Right, window, cx)
11961        });
11962        workspace.update_in(cx, |workspace, window, cx| {
11963            let pane = pane.read(cx);
11964            assert!(!pane.is_zoomed());
11965            assert!(!pane.focus_handle(cx).is_focused(window));
11966            assert!(workspace.right_dock().read(cx).is_open());
11967            assert!(workspace.zoomed.is_none());
11968        });
11969    }
11970
11971    #[gpui::test]
11972    async fn test_close_panel_on_toggle(cx: &mut gpui::TestAppContext) {
11973        init_test(cx);
11974        let fs = FakeFs::new(cx.executor());
11975
11976        let project = Project::test(fs, [], cx).await;
11977        let (workspace, cx) =
11978            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11979
11980        let panel = workspace.update_in(cx, |workspace, window, cx| {
11981            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
11982            workspace.add_panel(panel.clone(), window, cx);
11983            panel
11984        });
11985
11986        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11987        pane.update_in(cx, |pane, window, cx| {
11988            let item = cx.new(TestItem::new);
11989            pane.add_item(Box::new(item), true, true, None, window, cx);
11990        });
11991
11992        // Enable close_panel_on_toggle
11993        cx.update_global(|store: &mut SettingsStore, cx| {
11994            store.update_user_settings(cx, |settings| {
11995                settings.workspace.close_panel_on_toggle = Some(true);
11996            });
11997        });
11998
11999        // Panel starts closed. Toggling should open and focus it.
12000        workspace.update_in(cx, |workspace, window, cx| {
12001            assert!(!workspace.right_dock().read(cx).is_open());
12002            workspace.toggle_panel_focus::<TestPanel>(window, cx);
12003        });
12004
12005        workspace.update_in(cx, |workspace, window, cx| {
12006            assert!(
12007                workspace.right_dock().read(cx).is_open(),
12008                "Dock should be open after toggling from center"
12009            );
12010            assert!(
12011                panel.read(cx).focus_handle(cx).contains_focused(window, cx),
12012                "Panel should be focused after toggling from center"
12013            );
12014        });
12015
12016        // Panel is open and focused. Toggling should close the panel and
12017        // return focus to the center.
12018        workspace.update_in(cx, |workspace, window, cx| {
12019            workspace.toggle_panel_focus::<TestPanel>(window, cx);
12020        });
12021
12022        workspace.update_in(cx, |workspace, window, cx| {
12023            assert!(
12024                !workspace.right_dock().read(cx).is_open(),
12025                "Dock should be closed after toggling from focused panel"
12026            );
12027            assert!(
12028                !panel.read(cx).focus_handle(cx).contains_focused(window, cx),
12029                "Panel should not be focused after toggling from focused panel"
12030            );
12031        });
12032
12033        // Open the dock and focus something else so the panel is open but not
12034        // focused. Toggling should focus the panel (not close it).
12035        workspace.update_in(cx, |workspace, window, cx| {
12036            workspace
12037                .right_dock()
12038                .update(cx, |dock, cx| dock.set_open(true, window, cx));
12039            window.focus(&pane.read(cx).focus_handle(cx), cx);
12040        });
12041
12042        workspace.update_in(cx, |workspace, window, cx| {
12043            assert!(workspace.right_dock().read(cx).is_open());
12044            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
12045            workspace.toggle_panel_focus::<TestPanel>(window, cx);
12046        });
12047
12048        workspace.update_in(cx, |workspace, window, cx| {
12049            assert!(
12050                workspace.right_dock().read(cx).is_open(),
12051                "Dock should remain open when toggling focuses an open-but-unfocused panel"
12052            );
12053            assert!(
12054                panel.read(cx).focus_handle(cx).contains_focused(window, cx),
12055                "Panel should be focused after toggling an open-but-unfocused panel"
12056            );
12057        });
12058
12059        // Now disable the setting and verify the original behavior: toggling
12060        // from a focused panel moves focus to center but leaves the dock open.
12061        cx.update_global(|store: &mut SettingsStore, cx| {
12062            store.update_user_settings(cx, |settings| {
12063                settings.workspace.close_panel_on_toggle = Some(false);
12064            });
12065        });
12066
12067        workspace.update_in(cx, |workspace, window, cx| {
12068            workspace.toggle_panel_focus::<TestPanel>(window, cx);
12069        });
12070
12071        workspace.update_in(cx, |workspace, window, cx| {
12072            assert!(
12073                workspace.right_dock().read(cx).is_open(),
12074                "Dock should remain open when setting is disabled"
12075            );
12076            assert!(
12077                !panel.read(cx).focus_handle(cx).contains_focused(window, cx),
12078                "Panel should not be focused after toggling with setting disabled"
12079            );
12080        });
12081    }
12082
12083    #[gpui::test]
12084    async fn test_pane_zoom_in_out(cx: &mut TestAppContext) {
12085        init_test(cx);
12086        let fs = FakeFs::new(cx.executor());
12087
12088        let project = Project::test(fs, [], cx).await;
12089        let (workspace, cx) =
12090            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
12091
12092        let pane = workspace.update_in(cx, |workspace, _window, _cx| {
12093            workspace.active_pane().clone()
12094        });
12095
12096        // Add an item to the pane so it can be zoomed
12097        workspace.update_in(cx, |workspace, window, cx| {
12098            let item = cx.new(TestItem::new);
12099            workspace.add_item(pane.clone(), Box::new(item), None, true, true, window, cx);
12100        });
12101
12102        // Initially not zoomed
12103        workspace.update_in(cx, |workspace, _window, cx| {
12104            assert!(!pane.read(cx).is_zoomed(), "Pane starts unzoomed");
12105            assert!(
12106                workspace.zoomed.is_none(),
12107                "Workspace should track no zoomed pane"
12108            );
12109            assert!(pane.read(cx).items_len() > 0, "Pane should have items");
12110        });
12111
12112        // Zoom In
12113        pane.update_in(cx, |pane, window, cx| {
12114            pane.zoom_in(&crate::ZoomIn, window, cx);
12115        });
12116
12117        workspace.update_in(cx, |workspace, window, cx| {
12118            assert!(
12119                pane.read(cx).is_zoomed(),
12120                "Pane should be zoomed after ZoomIn"
12121            );
12122            assert!(
12123                workspace.zoomed.is_some(),
12124                "Workspace should track the zoomed pane"
12125            );
12126            assert!(
12127                pane.read(cx).focus_handle(cx).contains_focused(window, cx),
12128                "ZoomIn should focus the pane"
12129            );
12130        });
12131
12132        // Zoom In again is a no-op
12133        pane.update_in(cx, |pane, window, cx| {
12134            pane.zoom_in(&crate::ZoomIn, window, cx);
12135        });
12136
12137        workspace.update_in(cx, |workspace, window, cx| {
12138            assert!(pane.read(cx).is_zoomed(), "Second ZoomIn keeps pane zoomed");
12139            assert!(
12140                workspace.zoomed.is_some(),
12141                "Workspace still tracks zoomed pane"
12142            );
12143            assert!(
12144                pane.read(cx).focus_handle(cx).contains_focused(window, cx),
12145                "Pane remains focused after repeated ZoomIn"
12146            );
12147        });
12148
12149        // Zoom Out
12150        pane.update_in(cx, |pane, window, cx| {
12151            pane.zoom_out(&crate::ZoomOut, window, cx);
12152        });
12153
12154        workspace.update_in(cx, |workspace, _window, cx| {
12155            assert!(
12156                !pane.read(cx).is_zoomed(),
12157                "Pane should unzoom after ZoomOut"
12158            );
12159            assert!(
12160                workspace.zoomed.is_none(),
12161                "Workspace clears zoom tracking after ZoomOut"
12162            );
12163        });
12164
12165        // Zoom Out again is a no-op
12166        pane.update_in(cx, |pane, window, cx| {
12167            pane.zoom_out(&crate::ZoomOut, window, cx);
12168        });
12169
12170        workspace.update_in(cx, |workspace, _window, cx| {
12171            assert!(
12172                !pane.read(cx).is_zoomed(),
12173                "Second ZoomOut keeps pane unzoomed"
12174            );
12175            assert!(
12176                workspace.zoomed.is_none(),
12177                "Workspace remains without zoomed pane"
12178            );
12179        });
12180    }
12181
12182    #[gpui::test]
12183    async fn test_toggle_all_docks(cx: &mut gpui::TestAppContext) {
12184        init_test(cx);
12185        let fs = FakeFs::new(cx.executor());
12186
12187        let project = Project::test(fs, [], cx).await;
12188        let (workspace, cx) =
12189            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
12190        workspace.update_in(cx, |workspace, window, cx| {
12191            // Open two docks
12192            let left_dock = workspace.dock_at_position(DockPosition::Left);
12193            let right_dock = workspace.dock_at_position(DockPosition::Right);
12194
12195            left_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
12196            right_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
12197
12198            assert!(left_dock.read(cx).is_open());
12199            assert!(right_dock.read(cx).is_open());
12200        });
12201
12202        workspace.update_in(cx, |workspace, window, cx| {
12203            // Toggle all docks - should close both
12204            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
12205
12206            let left_dock = workspace.dock_at_position(DockPosition::Left);
12207            let right_dock = workspace.dock_at_position(DockPosition::Right);
12208            assert!(!left_dock.read(cx).is_open());
12209            assert!(!right_dock.read(cx).is_open());
12210        });
12211
12212        workspace.update_in(cx, |workspace, window, cx| {
12213            // Toggle again - should reopen both
12214            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
12215
12216            let left_dock = workspace.dock_at_position(DockPosition::Left);
12217            let right_dock = workspace.dock_at_position(DockPosition::Right);
12218            assert!(left_dock.read(cx).is_open());
12219            assert!(right_dock.read(cx).is_open());
12220        });
12221    }
12222
12223    #[gpui::test]
12224    async fn test_toggle_all_with_manual_close(cx: &mut gpui::TestAppContext) {
12225        init_test(cx);
12226        let fs = FakeFs::new(cx.executor());
12227
12228        let project = Project::test(fs, [], cx).await;
12229        let (workspace, cx) =
12230            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
12231        workspace.update_in(cx, |workspace, window, cx| {
12232            // Open two docks
12233            let left_dock = workspace.dock_at_position(DockPosition::Left);
12234            let right_dock = workspace.dock_at_position(DockPosition::Right);
12235
12236            left_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
12237            right_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
12238
12239            assert!(left_dock.read(cx).is_open());
12240            assert!(right_dock.read(cx).is_open());
12241        });
12242
12243        workspace.update_in(cx, |workspace, window, cx| {
12244            // Close them manually
12245            workspace.toggle_dock(DockPosition::Left, window, cx);
12246            workspace.toggle_dock(DockPosition::Right, window, cx);
12247
12248            let left_dock = workspace.dock_at_position(DockPosition::Left);
12249            let right_dock = workspace.dock_at_position(DockPosition::Right);
12250            assert!(!left_dock.read(cx).is_open());
12251            assert!(!right_dock.read(cx).is_open());
12252        });
12253
12254        workspace.update_in(cx, |workspace, window, cx| {
12255            // Toggle all docks - only last closed (right dock) should reopen
12256            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
12257
12258            let left_dock = workspace.dock_at_position(DockPosition::Left);
12259            let right_dock = workspace.dock_at_position(DockPosition::Right);
12260            assert!(!left_dock.read(cx).is_open());
12261            assert!(right_dock.read(cx).is_open());
12262        });
12263    }
12264
12265    #[gpui::test]
12266    async fn test_toggle_all_docks_after_dock_move(cx: &mut gpui::TestAppContext) {
12267        init_test(cx);
12268        let fs = FakeFs::new(cx.executor());
12269        let project = Project::test(fs, [], cx).await;
12270        let (multi_workspace, cx) =
12271            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
12272        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
12273
12274        // Open two docks (left and right) with one panel each
12275        let (left_panel, right_panel) = workspace.update_in(cx, |workspace, window, cx| {
12276            let left_panel = cx.new(|cx| TestPanel::new(DockPosition::Left, 100, cx));
12277            workspace.add_panel(left_panel.clone(), window, cx);
12278
12279            let right_panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 101, cx));
12280            workspace.add_panel(right_panel.clone(), window, cx);
12281
12282            workspace.toggle_dock(DockPosition::Left, window, cx);
12283            workspace.toggle_dock(DockPosition::Right, window, cx);
12284
12285            // Verify initial state
12286            assert!(
12287                workspace.left_dock().read(cx).is_open(),
12288                "Left dock should be open"
12289            );
12290            assert_eq!(
12291                workspace
12292                    .left_dock()
12293                    .read(cx)
12294                    .visible_panel()
12295                    .unwrap()
12296                    .panel_id(),
12297                left_panel.panel_id(),
12298                "Left panel should be visible in left dock"
12299            );
12300            assert!(
12301                workspace.right_dock().read(cx).is_open(),
12302                "Right dock should be open"
12303            );
12304            assert_eq!(
12305                workspace
12306                    .right_dock()
12307                    .read(cx)
12308                    .visible_panel()
12309                    .unwrap()
12310                    .panel_id(),
12311                right_panel.panel_id(),
12312                "Right panel should be visible in right dock"
12313            );
12314            assert!(
12315                !workspace.bottom_dock().read(cx).is_open(),
12316                "Bottom dock should be closed"
12317            );
12318
12319            (left_panel, right_panel)
12320        });
12321
12322        // Focus the left panel and move it to the next position (bottom dock)
12323        workspace.update_in(cx, |workspace, window, cx| {
12324            workspace.toggle_panel_focus::<TestPanel>(window, cx); // Focus left panel
12325            assert!(
12326                left_panel.read(cx).focus_handle(cx).is_focused(window),
12327                "Left panel should be focused"
12328            );
12329        });
12330
12331        cx.dispatch_action(MoveFocusedPanelToNextPosition);
12332
12333        // Verify the left panel has moved to the bottom dock, and the bottom dock is now open
12334        workspace.update(cx, |workspace, cx| {
12335            assert!(
12336                !workspace.left_dock().read(cx).is_open(),
12337                "Left dock should be closed"
12338            );
12339            assert!(
12340                workspace.bottom_dock().read(cx).is_open(),
12341                "Bottom dock should now be open"
12342            );
12343            assert_eq!(
12344                left_panel.read(cx).position,
12345                DockPosition::Bottom,
12346                "Left panel should now be in the bottom dock"
12347            );
12348            assert_eq!(
12349                workspace
12350                    .bottom_dock()
12351                    .read(cx)
12352                    .visible_panel()
12353                    .unwrap()
12354                    .panel_id(),
12355                left_panel.panel_id(),
12356                "Left panel should be the visible panel in the bottom dock"
12357            );
12358        });
12359
12360        // Toggle all docks off
12361        workspace.update_in(cx, |workspace, window, cx| {
12362            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
12363            assert!(
12364                !workspace.left_dock().read(cx).is_open(),
12365                "Left dock should be closed"
12366            );
12367            assert!(
12368                !workspace.right_dock().read(cx).is_open(),
12369                "Right dock should be closed"
12370            );
12371            assert!(
12372                !workspace.bottom_dock().read(cx).is_open(),
12373                "Bottom dock should be closed"
12374            );
12375        });
12376
12377        // Toggle all docks back on and verify positions are restored
12378        workspace.update_in(cx, |workspace, window, cx| {
12379            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
12380            assert!(
12381                !workspace.left_dock().read(cx).is_open(),
12382                "Left dock should remain closed"
12383            );
12384            assert!(
12385                workspace.right_dock().read(cx).is_open(),
12386                "Right dock should remain open"
12387            );
12388            assert!(
12389                workspace.bottom_dock().read(cx).is_open(),
12390                "Bottom dock should remain open"
12391            );
12392            assert_eq!(
12393                left_panel.read(cx).position,
12394                DockPosition::Bottom,
12395                "Left panel should remain in the bottom dock"
12396            );
12397            assert_eq!(
12398                right_panel.read(cx).position,
12399                DockPosition::Right,
12400                "Right panel should remain in the right dock"
12401            );
12402            assert_eq!(
12403                workspace
12404                    .bottom_dock()
12405                    .read(cx)
12406                    .visible_panel()
12407                    .unwrap()
12408                    .panel_id(),
12409                left_panel.panel_id(),
12410                "Left panel should be the visible panel in the right dock"
12411            );
12412        });
12413    }
12414
12415    #[gpui::test]
12416    async fn test_join_pane_into_next(cx: &mut gpui::TestAppContext) {
12417        init_test(cx);
12418
12419        let fs = FakeFs::new(cx.executor());
12420
12421        let project = Project::test(fs, None, cx).await;
12422        let (workspace, cx) =
12423            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
12424
12425        // Let's arrange the panes like this:
12426        //
12427        // +-----------------------+
12428        // |         top           |
12429        // +------+--------+-------+
12430        // | left | center | right |
12431        // +------+--------+-------+
12432        // |        bottom         |
12433        // +-----------------------+
12434
12435        let top_item = cx.new(|cx| {
12436            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "top.txt", cx)])
12437        });
12438        let bottom_item = cx.new(|cx| {
12439            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "bottom.txt", cx)])
12440        });
12441        let left_item = cx.new(|cx| {
12442            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "left.txt", cx)])
12443        });
12444        let right_item = cx.new(|cx| {
12445            TestItem::new(cx).with_project_items(&[TestProjectItem::new(4, "right.txt", cx)])
12446        });
12447        let center_item = cx.new(|cx| {
12448            TestItem::new(cx).with_project_items(&[TestProjectItem::new(5, "center.txt", cx)])
12449        });
12450
12451        let top_pane_id = workspace.update_in(cx, |workspace, window, cx| {
12452            let top_pane_id = workspace.active_pane().entity_id();
12453            workspace.add_item_to_active_pane(Box::new(top_item.clone()), None, false, window, cx);
12454            workspace.split_pane(
12455                workspace.active_pane().clone(),
12456                SplitDirection::Down,
12457                window,
12458                cx,
12459            );
12460            top_pane_id
12461        });
12462        let bottom_pane_id = workspace.update_in(cx, |workspace, window, cx| {
12463            let bottom_pane_id = workspace.active_pane().entity_id();
12464            workspace.add_item_to_active_pane(
12465                Box::new(bottom_item.clone()),
12466                None,
12467                false,
12468                window,
12469                cx,
12470            );
12471            workspace.split_pane(
12472                workspace.active_pane().clone(),
12473                SplitDirection::Up,
12474                window,
12475                cx,
12476            );
12477            bottom_pane_id
12478        });
12479        let left_pane_id = workspace.update_in(cx, |workspace, window, cx| {
12480            let left_pane_id = workspace.active_pane().entity_id();
12481            workspace.add_item_to_active_pane(Box::new(left_item.clone()), None, false, window, cx);
12482            workspace.split_pane(
12483                workspace.active_pane().clone(),
12484                SplitDirection::Right,
12485                window,
12486                cx,
12487            );
12488            left_pane_id
12489        });
12490        let right_pane_id = workspace.update_in(cx, |workspace, window, cx| {
12491            let right_pane_id = workspace.active_pane().entity_id();
12492            workspace.add_item_to_active_pane(
12493                Box::new(right_item.clone()),
12494                None,
12495                false,
12496                window,
12497                cx,
12498            );
12499            workspace.split_pane(
12500                workspace.active_pane().clone(),
12501                SplitDirection::Left,
12502                window,
12503                cx,
12504            );
12505            right_pane_id
12506        });
12507        let center_pane_id = workspace.update_in(cx, |workspace, window, cx| {
12508            let center_pane_id = workspace.active_pane().entity_id();
12509            workspace.add_item_to_active_pane(
12510                Box::new(center_item.clone()),
12511                None,
12512                false,
12513                window,
12514                cx,
12515            );
12516            center_pane_id
12517        });
12518        cx.executor().run_until_parked();
12519
12520        workspace.update_in(cx, |workspace, window, cx| {
12521            assert_eq!(center_pane_id, workspace.active_pane().entity_id());
12522
12523            // Join into next from center pane into right
12524            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
12525        });
12526
12527        workspace.update_in(cx, |workspace, window, cx| {
12528            let active_pane = workspace.active_pane();
12529            assert_eq!(right_pane_id, active_pane.entity_id());
12530            assert_eq!(2, active_pane.read(cx).items_len());
12531            let item_ids_in_pane =
12532                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
12533            assert!(item_ids_in_pane.contains(&center_item.item_id()));
12534            assert!(item_ids_in_pane.contains(&right_item.item_id()));
12535
12536            // Join into next from right pane into bottom
12537            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
12538        });
12539
12540        workspace.update_in(cx, |workspace, window, cx| {
12541            let active_pane = workspace.active_pane();
12542            assert_eq!(bottom_pane_id, active_pane.entity_id());
12543            assert_eq!(3, active_pane.read(cx).items_len());
12544            let item_ids_in_pane =
12545                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
12546            assert!(item_ids_in_pane.contains(&center_item.item_id()));
12547            assert!(item_ids_in_pane.contains(&right_item.item_id()));
12548            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
12549
12550            // Join into next from bottom pane into left
12551            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
12552        });
12553
12554        workspace.update_in(cx, |workspace, window, cx| {
12555            let active_pane = workspace.active_pane();
12556            assert_eq!(left_pane_id, active_pane.entity_id());
12557            assert_eq!(4, active_pane.read(cx).items_len());
12558            let item_ids_in_pane =
12559                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
12560            assert!(item_ids_in_pane.contains(&center_item.item_id()));
12561            assert!(item_ids_in_pane.contains(&right_item.item_id()));
12562            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
12563            assert!(item_ids_in_pane.contains(&left_item.item_id()));
12564
12565            // Join into next from left pane into top
12566            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
12567        });
12568
12569        workspace.update_in(cx, |workspace, window, cx| {
12570            let active_pane = workspace.active_pane();
12571            assert_eq!(top_pane_id, active_pane.entity_id());
12572            assert_eq!(5, active_pane.read(cx).items_len());
12573            let item_ids_in_pane =
12574                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
12575            assert!(item_ids_in_pane.contains(&center_item.item_id()));
12576            assert!(item_ids_in_pane.contains(&right_item.item_id()));
12577            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
12578            assert!(item_ids_in_pane.contains(&left_item.item_id()));
12579            assert!(item_ids_in_pane.contains(&top_item.item_id()));
12580
12581            // Single pane left: no-op
12582            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx)
12583        });
12584
12585        workspace.update(cx, |workspace, _cx| {
12586            let active_pane = workspace.active_pane();
12587            assert_eq!(top_pane_id, active_pane.entity_id());
12588        });
12589    }
12590
12591    fn add_an_item_to_active_pane(
12592        cx: &mut VisualTestContext,
12593        workspace: &Entity<Workspace>,
12594        item_id: u64,
12595    ) -> Entity<TestItem> {
12596        let item = cx.new(|cx| {
12597            TestItem::new(cx).with_project_items(&[TestProjectItem::new(
12598                item_id,
12599                "item{item_id}.txt",
12600                cx,
12601            )])
12602        });
12603        workspace.update_in(cx, |workspace, window, cx| {
12604            workspace.add_item_to_active_pane(Box::new(item.clone()), None, false, window, cx);
12605        });
12606        item
12607    }
12608
12609    fn split_pane(cx: &mut VisualTestContext, workspace: &Entity<Workspace>) -> Entity<Pane> {
12610        workspace.update_in(cx, |workspace, window, cx| {
12611            workspace.split_pane(
12612                workspace.active_pane().clone(),
12613                SplitDirection::Right,
12614                window,
12615                cx,
12616            )
12617        })
12618    }
12619
12620    #[gpui::test]
12621    async fn test_join_all_panes(cx: &mut gpui::TestAppContext) {
12622        init_test(cx);
12623        let fs = FakeFs::new(cx.executor());
12624        let project = Project::test(fs, None, cx).await;
12625        let (workspace, cx) =
12626            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
12627
12628        add_an_item_to_active_pane(cx, &workspace, 1);
12629        split_pane(cx, &workspace);
12630        add_an_item_to_active_pane(cx, &workspace, 2);
12631        split_pane(cx, &workspace); // empty pane
12632        split_pane(cx, &workspace);
12633        let last_item = add_an_item_to_active_pane(cx, &workspace, 3);
12634
12635        cx.executor().run_until_parked();
12636
12637        workspace.update(cx, |workspace, cx| {
12638            let num_panes = workspace.panes().len();
12639            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
12640            let active_item = workspace
12641                .active_pane()
12642                .read(cx)
12643                .active_item()
12644                .expect("item is in focus");
12645
12646            assert_eq!(num_panes, 4);
12647            assert_eq!(num_items_in_current_pane, 1);
12648            assert_eq!(active_item.item_id(), last_item.item_id());
12649        });
12650
12651        workspace.update_in(cx, |workspace, window, cx| {
12652            workspace.join_all_panes(window, cx);
12653        });
12654
12655        workspace.update(cx, |workspace, cx| {
12656            let num_panes = workspace.panes().len();
12657            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
12658            let active_item = workspace
12659                .active_pane()
12660                .read(cx)
12661                .active_item()
12662                .expect("item is in focus");
12663
12664            assert_eq!(num_panes, 1);
12665            assert_eq!(num_items_in_current_pane, 3);
12666            assert_eq!(active_item.item_id(), last_item.item_id());
12667        });
12668    }
12669
12670    #[gpui::test]
12671    async fn test_flexible_dock_sizing(cx: &mut gpui::TestAppContext) {
12672        init_test(cx);
12673        let fs = FakeFs::new(cx.executor());
12674
12675        let project = Project::test(fs, [], cx).await;
12676        let (multi_workspace, cx) =
12677            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
12678        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
12679
12680        workspace.update(cx, |workspace, _cx| {
12681            workspace.bounds.size.width = px(800.);
12682        });
12683
12684        workspace.update_in(cx, |workspace, window, cx| {
12685            let panel = cx.new(|cx| TestPanel::new_flexible(DockPosition::Right, 100, cx));
12686            workspace.add_panel(panel, window, cx);
12687            workspace.toggle_dock(DockPosition::Right, window, cx);
12688        });
12689
12690        let (panel, resized_width, ratio_basis_width) =
12691            workspace.update_in(cx, |workspace, window, cx| {
12692                let item = cx.new(|cx| {
12693                    TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
12694                });
12695                workspace.add_item_to_active_pane(Box::new(item), None, true, window, cx);
12696
12697                let dock = workspace.right_dock().read(cx);
12698                let workspace_width = workspace.bounds.size.width;
12699                let initial_width = workspace
12700                    .dock_size(&dock, window, cx)
12701                    .expect("flexible dock should have an initial width");
12702
12703                assert_eq!(initial_width, workspace_width / 2.);
12704
12705                workspace.resize_right_dock(px(300.), window, cx);
12706
12707                let dock = workspace.right_dock().read(cx);
12708                let resized_width = workspace
12709                    .dock_size(&dock, window, cx)
12710                    .expect("flexible dock should keep its resized width");
12711
12712                assert_eq!(resized_width, px(300.));
12713
12714                let panel = workspace
12715                    .right_dock()
12716                    .read(cx)
12717                    .visible_panel()
12718                    .expect("flexible dock should have a visible panel")
12719                    .panel_id();
12720
12721                (panel, resized_width, workspace_width)
12722            });
12723
12724        workspace.update_in(cx, |workspace, window, cx| {
12725            workspace.toggle_dock(DockPosition::Right, window, cx);
12726            workspace.toggle_dock(DockPosition::Right, window, cx);
12727
12728            let dock = workspace.right_dock().read(cx);
12729            let reopened_width = workspace
12730                .dock_size(&dock, window, cx)
12731                .expect("flexible dock should restore when reopened");
12732
12733            assert_eq!(reopened_width, resized_width);
12734
12735            let right_dock = workspace.right_dock().read(cx);
12736            let flexible_panel = right_dock
12737                .visible_panel()
12738                .expect("flexible dock should still have a visible panel");
12739            assert_eq!(flexible_panel.panel_id(), panel);
12740            assert_eq!(
12741                right_dock
12742                    .stored_panel_size_state(flexible_panel.as_ref())
12743                    .and_then(|size_state| size_state.flex),
12744                Some(
12745                    resized_width.to_f64() as f32
12746                        / (workspace.bounds.size.width - resized_width).to_f64() as f32
12747                )
12748            );
12749        });
12750
12751        workspace.update_in(cx, |workspace, window, cx| {
12752            workspace.split_pane(
12753                workspace.active_pane().clone(),
12754                SplitDirection::Right,
12755                window,
12756                cx,
12757            );
12758
12759            let dock = workspace.right_dock().read(cx);
12760            let split_width = workspace
12761                .dock_size(&dock, window, cx)
12762                .expect("flexible dock should keep its user-resized proportion");
12763
12764            assert_eq!(split_width, px(300.));
12765
12766            workspace.bounds.size.width = px(1600.);
12767
12768            let dock = workspace.right_dock().read(cx);
12769            let resized_window_width = workspace
12770                .dock_size(&dock, window, cx)
12771                .expect("flexible dock should preserve proportional size on window resize");
12772
12773            assert_eq!(
12774                resized_window_width,
12775                workspace.bounds.size.width
12776                    * (resized_width.to_f64() as f32 / ratio_basis_width.to_f64() as f32)
12777            );
12778        });
12779    }
12780
12781    #[gpui::test]
12782    async fn test_panel_size_state_persistence(cx: &mut gpui::TestAppContext) {
12783        init_test(cx);
12784        let fs = FakeFs::new(cx.executor());
12785
12786        // Fixed-width panel: pixel size is persisted to KVP and restored on re-add.
12787        {
12788            let project = Project::test(fs.clone(), [], cx).await;
12789            let (multi_workspace, cx) =
12790                cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
12791            let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
12792
12793            workspace.update(cx, |workspace, _cx| {
12794                workspace.set_random_database_id();
12795                workspace.bounds.size.width = px(800.);
12796            });
12797
12798            let panel = workspace.update_in(cx, |workspace, window, cx| {
12799                let panel = cx.new(|cx| TestPanel::new(DockPosition::Left, 100, cx));
12800                workspace.add_panel(panel.clone(), window, cx);
12801                workspace.toggle_dock(DockPosition::Left, window, cx);
12802                panel
12803            });
12804
12805            workspace.update_in(cx, |workspace, window, cx| {
12806                workspace.resize_left_dock(px(350.), window, cx);
12807            });
12808
12809            cx.run_until_parked();
12810
12811            let persisted = workspace.read_with(cx, |workspace, cx| {
12812                workspace.persisted_panel_size_state(TestPanel::panel_key(), cx)
12813            });
12814            assert_eq!(
12815                persisted.and_then(|s| s.size),
12816                Some(px(350.)),
12817                "fixed-width panel size should be persisted to KVP"
12818            );
12819
12820            // Remove the panel and re-add a fresh instance with the same key.
12821            // The new instance should have its size state restored from KVP.
12822            workspace.update_in(cx, |workspace, window, cx| {
12823                workspace.remove_panel(&panel, window, cx);
12824            });
12825
12826            workspace.update_in(cx, |workspace, window, cx| {
12827                let new_panel = cx.new(|cx| TestPanel::new(DockPosition::Left, 100, cx));
12828                workspace.add_panel(new_panel, window, cx);
12829
12830                let left_dock = workspace.left_dock().read(cx);
12831                let size_state = left_dock
12832                    .panel::<TestPanel>()
12833                    .and_then(|p| left_dock.stored_panel_size_state(&p));
12834                assert_eq!(
12835                    size_state.and_then(|s| s.size),
12836                    Some(px(350.)),
12837                    "re-added fixed-width panel should restore persisted size from KVP"
12838                );
12839            });
12840        }
12841
12842        // Flexible panel: both pixel size and ratio are persisted and restored.
12843        {
12844            let project = Project::test(fs.clone(), [], cx).await;
12845            let (multi_workspace, cx) =
12846                cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
12847            let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
12848
12849            workspace.update(cx, |workspace, _cx| {
12850                workspace.set_random_database_id();
12851                workspace.bounds.size.width = px(800.);
12852            });
12853
12854            let panel = workspace.update_in(cx, |workspace, window, cx| {
12855                let item = cx.new(|cx| {
12856                    TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
12857                });
12858                workspace.add_item_to_active_pane(Box::new(item), None, true, window, cx);
12859
12860                let panel = cx.new(|cx| TestPanel::new_flexible(DockPosition::Right, 100, cx));
12861                workspace.add_panel(panel.clone(), window, cx);
12862                workspace.toggle_dock(DockPosition::Right, window, cx);
12863                panel
12864            });
12865
12866            workspace.update_in(cx, |workspace, window, cx| {
12867                workspace.resize_right_dock(px(300.), window, cx);
12868            });
12869
12870            cx.run_until_parked();
12871
12872            let persisted = workspace
12873                .read_with(cx, |workspace, cx| {
12874                    workspace.persisted_panel_size_state(TestPanel::panel_key(), cx)
12875                })
12876                .expect("flexible panel state should be persisted to KVP");
12877            assert_eq!(
12878                persisted.size, None,
12879                "flexible panel should not persist a redundant pixel size"
12880            );
12881            let original_ratio = persisted.flex.expect("panel's flex should be persisted");
12882
12883            // Remove the panel and re-add: both size and ratio should be restored.
12884            workspace.update_in(cx, |workspace, window, cx| {
12885                workspace.remove_panel(&panel, window, cx);
12886            });
12887
12888            workspace.update_in(cx, |workspace, window, cx| {
12889                let new_panel = cx.new(|cx| TestPanel::new_flexible(DockPosition::Right, 100, cx));
12890                workspace.add_panel(new_panel, window, cx);
12891
12892                let right_dock = workspace.right_dock().read(cx);
12893                let size_state = right_dock
12894                    .panel::<TestPanel>()
12895                    .and_then(|p| right_dock.stored_panel_size_state(&p))
12896                    .expect("re-added flexible panel should have restored size state from KVP");
12897                assert_eq!(
12898                    size_state.size, None,
12899                    "re-added flexible panel should not have a persisted pixel size"
12900                );
12901                assert_eq!(
12902                    size_state.flex,
12903                    Some(original_ratio),
12904                    "re-added flexible panel should restore persisted flex"
12905                );
12906            });
12907        }
12908    }
12909
12910    #[gpui::test]
12911    async fn test_flexible_panel_left_dock_sizing(cx: &mut gpui::TestAppContext) {
12912        init_test(cx);
12913        let fs = FakeFs::new(cx.executor());
12914
12915        let project = Project::test(fs, [], cx).await;
12916        let (multi_workspace, cx) =
12917            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
12918        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
12919
12920        workspace.update(cx, |workspace, _cx| {
12921            workspace.bounds.size.width = px(900.);
12922        });
12923
12924        // Step 1: Add a tab to the center pane then open a flexible panel in the left
12925        // dock. With one full-width center pane the default ratio is 0.5, so the panel
12926        // and the center pane each take half the workspace width.
12927        workspace.update_in(cx, |workspace, window, cx| {
12928            let item = cx.new(|cx| {
12929                TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
12930            });
12931            workspace.add_item_to_active_pane(Box::new(item), None, true, window, cx);
12932
12933            let panel = cx.new(|cx| TestPanel::new_flexible(DockPosition::Left, 100, cx));
12934            workspace.add_panel(panel, window, cx);
12935            workspace.toggle_dock(DockPosition::Left, window, cx);
12936
12937            let left_dock = workspace.left_dock().read(cx);
12938            let left_width = workspace
12939                .dock_size(&left_dock, window, cx)
12940                .expect("left dock should have an active panel");
12941
12942            assert_eq!(
12943                left_width,
12944                workspace.bounds.size.width / 2.,
12945                "flexible left panel should split evenly with the center pane"
12946            );
12947        });
12948
12949        // Step 2: Split the center pane vertically (top/bottom). Vertical splits do not
12950        // change horizontal width fractions, so the flexible panel stays at the same
12951        // width as each half of the split.
12952        workspace.update_in(cx, |workspace, window, cx| {
12953            workspace.split_pane(
12954                workspace.active_pane().clone(),
12955                SplitDirection::Down,
12956                window,
12957                cx,
12958            );
12959
12960            let left_dock = workspace.left_dock().read(cx);
12961            let left_width = workspace
12962                .dock_size(&left_dock, window, cx)
12963                .expect("left dock should still have an active panel after vertical split");
12964
12965            assert_eq!(
12966                left_width,
12967                workspace.bounds.size.width / 2.,
12968                "flexible left panel width should match each vertically-split pane"
12969            );
12970        });
12971
12972        // Step 3: Open a fixed-width panel in the right dock. The right dock's default
12973        // size reduces the available width, so the flexible left panel and the center
12974        // panes all shrink proportionally to accommodate it.
12975        workspace.update_in(cx, |workspace, window, cx| {
12976            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 200, cx));
12977            workspace.add_panel(panel, window, cx);
12978            workspace.toggle_dock(DockPosition::Right, window, cx);
12979
12980            let right_dock = workspace.right_dock().read(cx);
12981            let right_width = workspace
12982                .dock_size(&right_dock, window, cx)
12983                .expect("right dock should have an active panel");
12984
12985            let left_dock = workspace.left_dock().read(cx);
12986            let left_width = workspace
12987                .dock_size(&left_dock, window, cx)
12988                .expect("left dock should still have an active panel");
12989
12990            let available_width = workspace.bounds.size.width - right_width;
12991            assert_eq!(
12992                left_width,
12993                available_width / 2.,
12994                "flexible left panel should shrink proportionally as the right dock takes space"
12995            );
12996        });
12997
12998        // Step 4: Toggle the right dock's panel to flexible. Now both docks use
12999        // flex sizing and the workspace width is divided among left-flex, center
13000        // (implicit flex 1.0), and right-flex.
13001        workspace.update_in(cx, |workspace, window, cx| {
13002            let right_dock = workspace.right_dock().clone();
13003            let right_panel = right_dock
13004                .read(cx)
13005                .visible_panel()
13006                .expect("right dock should have a visible panel")
13007                .clone();
13008            workspace.toggle_dock_panel_flexible_size(
13009                &right_dock,
13010                right_panel.as_ref(),
13011                window,
13012                cx,
13013            );
13014
13015            let right_dock = right_dock.read(cx);
13016            let right_panel = right_dock
13017                .visible_panel()
13018                .expect("right dock should still have a visible panel");
13019            assert!(
13020                right_panel.has_flexible_size(window, cx),
13021                "right panel should now be flexible"
13022            );
13023
13024            let right_size_state = right_dock
13025                .stored_panel_size_state(right_panel.as_ref())
13026                .expect("right panel should have a stored size state after toggling");
13027            let right_flex = right_size_state
13028                .flex
13029                .expect("right panel should have a flex value after toggling");
13030
13031            let left_dock = workspace.left_dock().read(cx);
13032            let left_width = workspace
13033                .dock_size(&left_dock, window, cx)
13034                .expect("left dock should still have an active panel");
13035            let right_width = workspace
13036                .dock_size(&right_dock, window, cx)
13037                .expect("right dock should still have an active panel");
13038
13039            let left_flex = workspace
13040                .default_dock_flex(DockPosition::Left)
13041                .expect("left dock should have a default flex");
13042
13043            let total_flex = left_flex + 1.0 + right_flex;
13044            let expected_left = left_flex / total_flex * workspace.bounds.size.width;
13045            let expected_right = right_flex / total_flex * workspace.bounds.size.width;
13046            assert_eq!(
13047                left_width, expected_left,
13048                "flexible left panel should share workspace width via flex ratios"
13049            );
13050            assert_eq!(
13051                right_width, expected_right,
13052                "flexible right panel should share workspace width via flex ratios"
13053            );
13054        });
13055    }
13056
13057    struct TestModal(FocusHandle);
13058
13059    impl TestModal {
13060        fn new(_: &mut Window, cx: &mut Context<Self>) -> Self {
13061            Self(cx.focus_handle())
13062        }
13063    }
13064
13065    impl EventEmitter<DismissEvent> for TestModal {}
13066
13067    impl Focusable for TestModal {
13068        fn focus_handle(&self, _cx: &App) -> FocusHandle {
13069            self.0.clone()
13070        }
13071    }
13072
13073    impl ModalView for TestModal {}
13074
13075    impl Render for TestModal {
13076        fn render(
13077            &mut self,
13078            _window: &mut Window,
13079            _cx: &mut Context<TestModal>,
13080        ) -> impl IntoElement {
13081            div().track_focus(&self.0)
13082        }
13083    }
13084
13085    #[gpui::test]
13086    async fn test_panels(cx: &mut gpui::TestAppContext) {
13087        init_test(cx);
13088        let fs = FakeFs::new(cx.executor());
13089
13090        let project = Project::test(fs, [], cx).await;
13091        let (multi_workspace, cx) =
13092            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
13093        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
13094
13095        let (panel_1, panel_2) = workspace.update_in(cx, |workspace, window, cx| {
13096            let panel_1 = cx.new(|cx| TestPanel::new(DockPosition::Left, 100, cx));
13097            workspace.add_panel(panel_1.clone(), window, cx);
13098            workspace.toggle_dock(DockPosition::Left, window, cx);
13099            let panel_2 = cx.new(|cx| TestPanel::new(DockPosition::Right, 101, cx));
13100            workspace.add_panel(panel_2.clone(), window, cx);
13101            workspace.toggle_dock(DockPosition::Right, window, cx);
13102
13103            let left_dock = workspace.left_dock();
13104            assert_eq!(
13105                left_dock.read(cx).visible_panel().unwrap().panel_id(),
13106                panel_1.panel_id()
13107            );
13108            assert_eq!(
13109                workspace.dock_size(&left_dock.read(cx), window, cx),
13110                Some(px(300.))
13111            );
13112
13113            workspace.resize_left_dock(px(1337.), window, cx);
13114            assert_eq!(
13115                workspace
13116                    .right_dock()
13117                    .read(cx)
13118                    .visible_panel()
13119                    .unwrap()
13120                    .panel_id(),
13121                panel_2.panel_id(),
13122            );
13123
13124            (panel_1, panel_2)
13125        });
13126
13127        // Move panel_1 to the right
13128        panel_1.update_in(cx, |panel_1, window, cx| {
13129            panel_1.set_position(DockPosition::Right, window, cx)
13130        });
13131
13132        workspace.update_in(cx, |workspace, window, cx| {
13133            // Since panel_1 was visible on the left, it should now be visible now that it's been moved to the right.
13134            // Since it was the only panel on the left, the left dock should now be closed.
13135            assert!(!workspace.left_dock().read(cx).is_open());
13136            assert!(workspace.left_dock().read(cx).visible_panel().is_none());
13137            let right_dock = workspace.right_dock();
13138            assert_eq!(
13139                right_dock.read(cx).visible_panel().unwrap().panel_id(),
13140                panel_1.panel_id()
13141            );
13142            assert_eq!(
13143                right_dock
13144                    .read(cx)
13145                    .active_panel_size()
13146                    .unwrap()
13147                    .size
13148                    .unwrap(),
13149                px(1337.)
13150            );
13151
13152            // Now we move panel_2 to the left
13153            panel_2.set_position(DockPosition::Left, window, cx);
13154        });
13155
13156        workspace.update(cx, |workspace, cx| {
13157            // Since panel_2 was not visible on the right, we don't open the left dock.
13158            assert!(!workspace.left_dock().read(cx).is_open());
13159            // And the right dock is unaffected in its displaying of panel_1
13160            assert!(workspace.right_dock().read(cx).is_open());
13161            assert_eq!(
13162                workspace
13163                    .right_dock()
13164                    .read(cx)
13165                    .visible_panel()
13166                    .unwrap()
13167                    .panel_id(),
13168                panel_1.panel_id(),
13169            );
13170        });
13171
13172        // Move panel_1 back to the left
13173        panel_1.update_in(cx, |panel_1, window, cx| {
13174            panel_1.set_position(DockPosition::Left, window, cx)
13175        });
13176
13177        workspace.update_in(cx, |workspace, window, cx| {
13178            // Since panel_1 was visible on the right, we open the left dock and make panel_1 active.
13179            let left_dock = workspace.left_dock();
13180            assert!(left_dock.read(cx).is_open());
13181            assert_eq!(
13182                left_dock.read(cx).visible_panel().unwrap().panel_id(),
13183                panel_1.panel_id()
13184            );
13185            assert_eq!(
13186                workspace.dock_size(&left_dock.read(cx), window, cx),
13187                Some(px(1337.))
13188            );
13189            // And the right dock should be closed as it no longer has any panels.
13190            assert!(!workspace.right_dock().read(cx).is_open());
13191
13192            // Now we move panel_1 to the bottom
13193            panel_1.set_position(DockPosition::Bottom, window, cx);
13194        });
13195
13196        workspace.update_in(cx, |workspace, window, cx| {
13197            // Since panel_1 was visible on the left, we close the left dock.
13198            assert!(!workspace.left_dock().read(cx).is_open());
13199            // The bottom dock is sized based on the panel's default size,
13200            // since the panel orientation changed from vertical to horizontal.
13201            let bottom_dock = workspace.bottom_dock();
13202            assert_eq!(
13203                workspace.dock_size(&bottom_dock.read(cx), window, cx),
13204                Some(px(300.))
13205            );
13206            // Close bottom dock and move panel_1 back to the left.
13207            bottom_dock.update(cx, |bottom_dock, cx| {
13208                bottom_dock.set_open(false, window, cx)
13209            });
13210            panel_1.set_position(DockPosition::Left, window, cx);
13211        });
13212
13213        // Emit activated event on panel 1
13214        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Activate));
13215
13216        // Now the left dock is open and panel_1 is active and focused.
13217        workspace.update_in(cx, |workspace, window, cx| {
13218            let left_dock = workspace.left_dock();
13219            assert!(left_dock.read(cx).is_open());
13220            assert_eq!(
13221                left_dock.read(cx).visible_panel().unwrap().panel_id(),
13222                panel_1.panel_id(),
13223            );
13224            assert!(panel_1.focus_handle(cx).is_focused(window));
13225        });
13226
13227        // Emit closed event on panel 2, which is not active
13228        panel_2.update(cx, |_, cx| cx.emit(PanelEvent::Close));
13229
13230        // Wo don't close the left dock, because panel_2 wasn't the active panel
13231        workspace.update(cx, |workspace, cx| {
13232            let left_dock = workspace.left_dock();
13233            assert!(left_dock.read(cx).is_open());
13234            assert_eq!(
13235                left_dock.read(cx).visible_panel().unwrap().panel_id(),
13236                panel_1.panel_id(),
13237            );
13238        });
13239
13240        // Emitting a ZoomIn event shows the panel as zoomed.
13241        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomIn));
13242        workspace.read_with(cx, |workspace, _| {
13243            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
13244            assert_eq!(workspace.zoomed_position, Some(DockPosition::Left));
13245        });
13246
13247        // Move panel to another dock while it is zoomed
13248        panel_1.update_in(cx, |panel, window, cx| {
13249            panel.set_position(DockPosition::Right, window, cx)
13250        });
13251        workspace.read_with(cx, |workspace, _| {
13252            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
13253
13254            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
13255        });
13256
13257        // This is a helper for getting a:
13258        // - valid focus on an element,
13259        // - that isn't a part of the panes and panels system of the Workspace,
13260        // - and doesn't trigger the 'on_focus_lost' API.
13261        let focus_other_view = {
13262            let workspace = workspace.clone();
13263            move |cx: &mut VisualTestContext| {
13264                workspace.update_in(cx, |workspace, window, cx| {
13265                    if workspace.active_modal::<TestModal>(cx).is_some() {
13266                        workspace.toggle_modal(window, cx, TestModal::new);
13267                        workspace.toggle_modal(window, cx, TestModal::new);
13268                    } else {
13269                        workspace.toggle_modal(window, cx, TestModal::new);
13270                    }
13271                })
13272            }
13273        };
13274
13275        // If focus is transferred to another view that's not a panel or another pane, we still show
13276        // the panel as zoomed.
13277        focus_other_view(cx);
13278        workspace.read_with(cx, |workspace, _| {
13279            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
13280            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
13281        });
13282
13283        // If focus is transferred elsewhere in the workspace, the panel is no longer zoomed.
13284        workspace.update_in(cx, |_workspace, window, cx| {
13285            cx.focus_self(window);
13286        });
13287        workspace.read_with(cx, |workspace, _| {
13288            assert_eq!(workspace.zoomed, None);
13289            assert_eq!(workspace.zoomed_position, None);
13290        });
13291
13292        // If focus is transferred again to another view that's not a panel or a pane, we won't
13293        // show the panel as zoomed because it wasn't zoomed before.
13294        focus_other_view(cx);
13295        workspace.read_with(cx, |workspace, _| {
13296            assert_eq!(workspace.zoomed, None);
13297            assert_eq!(workspace.zoomed_position, None);
13298        });
13299
13300        // When the panel is activated, it is zoomed again.
13301        cx.dispatch_action(ToggleRightDock);
13302        workspace.read_with(cx, |workspace, _| {
13303            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
13304            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
13305        });
13306
13307        // Emitting a ZoomOut event unzooms the panel.
13308        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomOut));
13309        workspace.read_with(cx, |workspace, _| {
13310            assert_eq!(workspace.zoomed, None);
13311            assert_eq!(workspace.zoomed_position, None);
13312        });
13313
13314        // Emit closed event on panel 1, which is active
13315        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Close));
13316
13317        // Now the left dock is closed, because panel_1 was the active panel
13318        workspace.update(cx, |workspace, cx| {
13319            let right_dock = workspace.right_dock();
13320            assert!(!right_dock.read(cx).is_open());
13321        });
13322    }
13323
13324    #[gpui::test]
13325    async fn test_no_save_prompt_when_multi_buffer_dirty_items_closed(cx: &mut TestAppContext) {
13326        init_test(cx);
13327
13328        let fs = FakeFs::new(cx.background_executor.clone());
13329        let project = Project::test(fs, [], cx).await;
13330        let (workspace, cx) =
13331            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13332        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13333
13334        let dirty_regular_buffer = cx.new(|cx| {
13335            TestItem::new(cx)
13336                .with_dirty(true)
13337                .with_label("1.txt")
13338                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
13339        });
13340        let dirty_regular_buffer_2 = cx.new(|cx| {
13341            TestItem::new(cx)
13342                .with_dirty(true)
13343                .with_label("2.txt")
13344                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
13345        });
13346        let dirty_multi_buffer_with_both = cx.new(|cx| {
13347            TestItem::new(cx)
13348                .with_dirty(true)
13349                .with_buffer_kind(ItemBufferKind::Multibuffer)
13350                .with_label("Fake Project Search")
13351                .with_project_items(&[
13352                    dirty_regular_buffer.read(cx).project_items[0].clone(),
13353                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
13354                ])
13355        });
13356        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
13357        workspace.update_in(cx, |workspace, window, cx| {
13358            workspace.add_item(
13359                pane.clone(),
13360                Box::new(dirty_regular_buffer.clone()),
13361                None,
13362                false,
13363                false,
13364                window,
13365                cx,
13366            );
13367            workspace.add_item(
13368                pane.clone(),
13369                Box::new(dirty_regular_buffer_2.clone()),
13370                None,
13371                false,
13372                false,
13373                window,
13374                cx,
13375            );
13376            workspace.add_item(
13377                pane.clone(),
13378                Box::new(dirty_multi_buffer_with_both.clone()),
13379                None,
13380                false,
13381                false,
13382                window,
13383                cx,
13384            );
13385        });
13386
13387        pane.update_in(cx, |pane, window, cx| {
13388            pane.activate_item(2, true, true, window, cx);
13389            assert_eq!(
13390                pane.active_item().unwrap().item_id(),
13391                multi_buffer_with_both_files_id,
13392                "Should select the multi buffer in the pane"
13393            );
13394        });
13395        let close_all_but_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
13396            pane.close_other_items(
13397                &CloseOtherItems {
13398                    save_intent: Some(SaveIntent::Save),
13399                    close_pinned: true,
13400                },
13401                None,
13402                window,
13403                cx,
13404            )
13405        });
13406        cx.background_executor.run_until_parked();
13407        assert!(!cx.has_pending_prompt());
13408        close_all_but_multi_buffer_task
13409            .await
13410            .expect("Closing all buffers but the multi buffer failed");
13411        pane.update(cx, |pane, cx| {
13412            assert_eq!(dirty_regular_buffer.read(cx).save_count, 1);
13413            assert_eq!(dirty_multi_buffer_with_both.read(cx).save_count, 0);
13414            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 1);
13415            assert_eq!(pane.items_len(), 1);
13416            assert_eq!(
13417                pane.active_item().unwrap().item_id(),
13418                multi_buffer_with_both_files_id,
13419                "Should have only the multi buffer left in the pane"
13420            );
13421            assert!(
13422                dirty_multi_buffer_with_both.read(cx).is_dirty,
13423                "The multi buffer containing the unsaved buffer should still be dirty"
13424            );
13425        });
13426
13427        dirty_regular_buffer.update(cx, |buffer, cx| {
13428            buffer.project_items[0].update(cx, |pi, _| pi.is_dirty = true)
13429        });
13430
13431        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
13432            pane.close_active_item(
13433                &CloseActiveItem {
13434                    save_intent: Some(SaveIntent::Close),
13435                    close_pinned: false,
13436                },
13437                window,
13438                cx,
13439            )
13440        });
13441        cx.background_executor.run_until_parked();
13442        assert!(
13443            cx.has_pending_prompt(),
13444            "Dirty multi buffer should prompt a save dialog"
13445        );
13446        cx.simulate_prompt_answer("Save");
13447        cx.background_executor.run_until_parked();
13448        close_multi_buffer_task
13449            .await
13450            .expect("Closing the multi buffer failed");
13451        pane.update(cx, |pane, cx| {
13452            assert_eq!(
13453                dirty_multi_buffer_with_both.read(cx).save_count,
13454                1,
13455                "Multi buffer item should get be saved"
13456            );
13457            // Test impl does not save inner items, so we do not assert them
13458            assert_eq!(
13459                pane.items_len(),
13460                0,
13461                "No more items should be left in the pane"
13462            );
13463            assert!(pane.active_item().is_none());
13464        });
13465    }
13466
13467    #[gpui::test]
13468    async fn test_save_prompt_when_dirty_multi_buffer_closed_with_some_of_its_dirty_items_not_present_in_the_pane(
13469        cx: &mut TestAppContext,
13470    ) {
13471        init_test(cx);
13472
13473        let fs = FakeFs::new(cx.background_executor.clone());
13474        let project = Project::test(fs, [], cx).await;
13475        let (workspace, cx) =
13476            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13477        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13478
13479        let dirty_regular_buffer = cx.new(|cx| {
13480            TestItem::new(cx)
13481                .with_dirty(true)
13482                .with_label("1.txt")
13483                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
13484        });
13485        let dirty_regular_buffer_2 = cx.new(|cx| {
13486            TestItem::new(cx)
13487                .with_dirty(true)
13488                .with_label("2.txt")
13489                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
13490        });
13491        let clear_regular_buffer = cx.new(|cx| {
13492            TestItem::new(cx)
13493                .with_label("3.txt")
13494                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
13495        });
13496
13497        let dirty_multi_buffer_with_both = cx.new(|cx| {
13498            TestItem::new(cx)
13499                .with_dirty(true)
13500                .with_buffer_kind(ItemBufferKind::Multibuffer)
13501                .with_label("Fake Project Search")
13502                .with_project_items(&[
13503                    dirty_regular_buffer.read(cx).project_items[0].clone(),
13504                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
13505                    clear_regular_buffer.read(cx).project_items[0].clone(),
13506                ])
13507        });
13508        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
13509        workspace.update_in(cx, |workspace, window, cx| {
13510            workspace.add_item(
13511                pane.clone(),
13512                Box::new(dirty_regular_buffer.clone()),
13513                None,
13514                false,
13515                false,
13516                window,
13517                cx,
13518            );
13519            workspace.add_item(
13520                pane.clone(),
13521                Box::new(dirty_multi_buffer_with_both.clone()),
13522                None,
13523                false,
13524                false,
13525                window,
13526                cx,
13527            );
13528        });
13529
13530        pane.update_in(cx, |pane, window, cx| {
13531            pane.activate_item(1, true, true, window, cx);
13532            assert_eq!(
13533                pane.active_item().unwrap().item_id(),
13534                multi_buffer_with_both_files_id,
13535                "Should select the multi buffer in the pane"
13536            );
13537        });
13538        let _close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
13539            pane.close_active_item(
13540                &CloseActiveItem {
13541                    save_intent: None,
13542                    close_pinned: false,
13543                },
13544                window,
13545                cx,
13546            )
13547        });
13548        cx.background_executor.run_until_parked();
13549        assert!(
13550            cx.has_pending_prompt(),
13551            "With one dirty item from the multi buffer not being in the pane, a save prompt should be shown"
13552        );
13553    }
13554
13555    /// Tests that when `close_on_file_delete` is enabled, files are automatically
13556    /// closed when they are deleted from disk.
13557    #[gpui::test]
13558    async fn test_close_on_disk_deletion_enabled(cx: &mut TestAppContext) {
13559        init_test(cx);
13560
13561        // Enable the close_on_disk_deletion setting
13562        cx.update_global(|store: &mut SettingsStore, cx| {
13563            store.update_user_settings(cx, |settings| {
13564                settings.workspace.close_on_file_delete = Some(true);
13565            });
13566        });
13567
13568        let fs = FakeFs::new(cx.background_executor.clone());
13569        let project = Project::test(fs, [], cx).await;
13570        let (workspace, cx) =
13571            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13572        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13573
13574        // Create a test item that simulates a file
13575        let item = cx.new(|cx| {
13576            TestItem::new(cx)
13577                .with_label("test.txt")
13578                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
13579        });
13580
13581        // Add item to workspace
13582        workspace.update_in(cx, |workspace, window, cx| {
13583            workspace.add_item(
13584                pane.clone(),
13585                Box::new(item.clone()),
13586                None,
13587                false,
13588                false,
13589                window,
13590                cx,
13591            );
13592        });
13593
13594        // Verify the item is in the pane
13595        pane.read_with(cx, |pane, _| {
13596            assert_eq!(pane.items().count(), 1);
13597        });
13598
13599        // Simulate file deletion by setting the item's deleted state
13600        item.update(cx, |item, _| {
13601            item.set_has_deleted_file(true);
13602        });
13603
13604        // Emit UpdateTab event to trigger the close behavior
13605        cx.run_until_parked();
13606        item.update(cx, |_, cx| {
13607            cx.emit(ItemEvent::UpdateTab);
13608        });
13609
13610        // Allow the close operation to complete
13611        cx.run_until_parked();
13612
13613        // Verify the item was automatically closed
13614        pane.read_with(cx, |pane, _| {
13615            assert_eq!(
13616                pane.items().count(),
13617                0,
13618                "Item should be automatically closed when file is deleted"
13619            );
13620        });
13621    }
13622
13623    /// Tests that when `close_on_file_delete` is disabled (default), files remain
13624    /// open with a strikethrough when they are deleted from disk.
13625    #[gpui::test]
13626    async fn test_close_on_disk_deletion_disabled(cx: &mut TestAppContext) {
13627        init_test(cx);
13628
13629        // Ensure close_on_disk_deletion is disabled (default)
13630        cx.update_global(|store: &mut SettingsStore, cx| {
13631            store.update_user_settings(cx, |settings| {
13632                settings.workspace.close_on_file_delete = Some(false);
13633            });
13634        });
13635
13636        let fs = FakeFs::new(cx.background_executor.clone());
13637        let project = Project::test(fs, [], cx).await;
13638        let (workspace, cx) =
13639            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13640        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13641
13642        // Create a test item that simulates a file
13643        let item = cx.new(|cx| {
13644            TestItem::new(cx)
13645                .with_label("test.txt")
13646                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
13647        });
13648
13649        // Add item to workspace
13650        workspace.update_in(cx, |workspace, window, cx| {
13651            workspace.add_item(
13652                pane.clone(),
13653                Box::new(item.clone()),
13654                None,
13655                false,
13656                false,
13657                window,
13658                cx,
13659            );
13660        });
13661
13662        // Verify the item is in the pane
13663        pane.read_with(cx, |pane, _| {
13664            assert_eq!(pane.items().count(), 1);
13665        });
13666
13667        // Simulate file deletion
13668        item.update(cx, |item, _| {
13669            item.set_has_deleted_file(true);
13670        });
13671
13672        // Emit UpdateTab event
13673        cx.run_until_parked();
13674        item.update(cx, |_, cx| {
13675            cx.emit(ItemEvent::UpdateTab);
13676        });
13677
13678        // Allow any potential close operation to complete
13679        cx.run_until_parked();
13680
13681        // Verify the item remains open (with strikethrough)
13682        pane.read_with(cx, |pane, _| {
13683            assert_eq!(
13684                pane.items().count(),
13685                1,
13686                "Item should remain open when close_on_disk_deletion is disabled"
13687            );
13688        });
13689
13690        // Verify the item shows as deleted
13691        item.read_with(cx, |item, _| {
13692            assert!(
13693                item.has_deleted_file,
13694                "Item should be marked as having deleted file"
13695            );
13696        });
13697    }
13698
13699    /// Tests that dirty files are not automatically closed when deleted from disk,
13700    /// even when `close_on_file_delete` is enabled. This ensures users don't lose
13701    /// unsaved changes without being prompted.
13702    #[gpui::test]
13703    async fn test_close_on_disk_deletion_with_dirty_file(cx: &mut TestAppContext) {
13704        init_test(cx);
13705
13706        // Enable the close_on_file_delete setting
13707        cx.update_global(|store: &mut SettingsStore, cx| {
13708            store.update_user_settings(cx, |settings| {
13709                settings.workspace.close_on_file_delete = Some(true);
13710            });
13711        });
13712
13713        let fs = FakeFs::new(cx.background_executor.clone());
13714        let project = Project::test(fs, [], cx).await;
13715        let (workspace, cx) =
13716            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13717        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13718
13719        // Create a dirty test item
13720        let item = cx.new(|cx| {
13721            TestItem::new(cx)
13722                .with_dirty(true)
13723                .with_label("test.txt")
13724                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
13725        });
13726
13727        // Add item to workspace
13728        workspace.update_in(cx, |workspace, window, cx| {
13729            workspace.add_item(
13730                pane.clone(),
13731                Box::new(item.clone()),
13732                None,
13733                false,
13734                false,
13735                window,
13736                cx,
13737            );
13738        });
13739
13740        // Simulate file deletion
13741        item.update(cx, |item, _| {
13742            item.set_has_deleted_file(true);
13743        });
13744
13745        // Emit UpdateTab event to trigger the close behavior
13746        cx.run_until_parked();
13747        item.update(cx, |_, cx| {
13748            cx.emit(ItemEvent::UpdateTab);
13749        });
13750
13751        // Allow any potential close operation to complete
13752        cx.run_until_parked();
13753
13754        // Verify the item remains open (dirty files are not auto-closed)
13755        pane.read_with(cx, |pane, _| {
13756            assert_eq!(
13757                pane.items().count(),
13758                1,
13759                "Dirty items should not be automatically closed even when file is deleted"
13760            );
13761        });
13762
13763        // Verify the item is marked as deleted and still dirty
13764        item.read_with(cx, |item, _| {
13765            assert!(
13766                item.has_deleted_file,
13767                "Item should be marked as having deleted file"
13768            );
13769            assert!(item.is_dirty, "Item should still be dirty");
13770        });
13771    }
13772
13773    /// Tests that navigation history is cleaned up when files are auto-closed
13774    /// due to deletion from disk.
13775    #[gpui::test]
13776    async fn test_close_on_disk_deletion_cleans_navigation_history(cx: &mut TestAppContext) {
13777        init_test(cx);
13778
13779        // Enable the close_on_file_delete setting
13780        cx.update_global(|store: &mut SettingsStore, cx| {
13781            store.update_user_settings(cx, |settings| {
13782                settings.workspace.close_on_file_delete = Some(true);
13783            });
13784        });
13785
13786        let fs = FakeFs::new(cx.background_executor.clone());
13787        let project = Project::test(fs, [], cx).await;
13788        let (workspace, cx) =
13789            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13790        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13791
13792        // Create test items
13793        let item1 = cx.new(|cx| {
13794            TestItem::new(cx)
13795                .with_label("test1.txt")
13796                .with_project_items(&[TestProjectItem::new(1, "test1.txt", cx)])
13797        });
13798        let item1_id = item1.item_id();
13799
13800        let item2 = cx.new(|cx| {
13801            TestItem::new(cx)
13802                .with_label("test2.txt")
13803                .with_project_items(&[TestProjectItem::new(2, "test2.txt", cx)])
13804        });
13805
13806        // Add items to workspace
13807        workspace.update_in(cx, |workspace, window, cx| {
13808            workspace.add_item(
13809                pane.clone(),
13810                Box::new(item1.clone()),
13811                None,
13812                false,
13813                false,
13814                window,
13815                cx,
13816            );
13817            workspace.add_item(
13818                pane.clone(),
13819                Box::new(item2.clone()),
13820                None,
13821                false,
13822                false,
13823                window,
13824                cx,
13825            );
13826        });
13827
13828        // Activate item1 to ensure it gets navigation entries
13829        pane.update_in(cx, |pane, window, cx| {
13830            pane.activate_item(0, true, true, window, cx);
13831        });
13832
13833        // Switch to item2 and back to create navigation history
13834        pane.update_in(cx, |pane, window, cx| {
13835            pane.activate_item(1, true, true, window, cx);
13836        });
13837        cx.run_until_parked();
13838
13839        pane.update_in(cx, |pane, window, cx| {
13840            pane.activate_item(0, true, true, window, cx);
13841        });
13842        cx.run_until_parked();
13843
13844        // Simulate file deletion for item1
13845        item1.update(cx, |item, _| {
13846            item.set_has_deleted_file(true);
13847        });
13848
13849        // Emit UpdateTab event to trigger the close behavior
13850        item1.update(cx, |_, cx| {
13851            cx.emit(ItemEvent::UpdateTab);
13852        });
13853        cx.run_until_parked();
13854
13855        // Verify item1 was closed
13856        pane.read_with(cx, |pane, _| {
13857            assert_eq!(
13858                pane.items().count(),
13859                1,
13860                "Should have 1 item remaining after auto-close"
13861            );
13862        });
13863
13864        // Check navigation history after close
13865        let has_item = pane.read_with(cx, |pane, cx| {
13866            let mut has_item = false;
13867            pane.nav_history().for_each_entry(cx, &mut |entry, _| {
13868                if entry.item.id() == item1_id {
13869                    has_item = true;
13870                }
13871            });
13872            has_item
13873        });
13874
13875        assert!(
13876            !has_item,
13877            "Navigation history should not contain closed item entries"
13878        );
13879    }
13880
13881    #[gpui::test]
13882    async fn test_no_save_prompt_when_dirty_multi_buffer_closed_with_all_of_its_dirty_items_present_in_the_pane(
13883        cx: &mut TestAppContext,
13884    ) {
13885        init_test(cx);
13886
13887        let fs = FakeFs::new(cx.background_executor.clone());
13888        let project = Project::test(fs, [], cx).await;
13889        let (workspace, cx) =
13890            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13891        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13892
13893        let dirty_regular_buffer = cx.new(|cx| {
13894            TestItem::new(cx)
13895                .with_dirty(true)
13896                .with_label("1.txt")
13897                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
13898        });
13899        let dirty_regular_buffer_2 = cx.new(|cx| {
13900            TestItem::new(cx)
13901                .with_dirty(true)
13902                .with_label("2.txt")
13903                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
13904        });
13905        let clear_regular_buffer = cx.new(|cx| {
13906            TestItem::new(cx)
13907                .with_label("3.txt")
13908                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
13909        });
13910
13911        let dirty_multi_buffer = cx.new(|cx| {
13912            TestItem::new(cx)
13913                .with_dirty(true)
13914                .with_buffer_kind(ItemBufferKind::Multibuffer)
13915                .with_label("Fake Project Search")
13916                .with_project_items(&[
13917                    dirty_regular_buffer.read(cx).project_items[0].clone(),
13918                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
13919                    clear_regular_buffer.read(cx).project_items[0].clone(),
13920                ])
13921        });
13922        workspace.update_in(cx, |workspace, window, cx| {
13923            workspace.add_item(
13924                pane.clone(),
13925                Box::new(dirty_regular_buffer.clone()),
13926                None,
13927                false,
13928                false,
13929                window,
13930                cx,
13931            );
13932            workspace.add_item(
13933                pane.clone(),
13934                Box::new(dirty_regular_buffer_2.clone()),
13935                None,
13936                false,
13937                false,
13938                window,
13939                cx,
13940            );
13941            workspace.add_item(
13942                pane.clone(),
13943                Box::new(dirty_multi_buffer.clone()),
13944                None,
13945                false,
13946                false,
13947                window,
13948                cx,
13949            );
13950        });
13951
13952        pane.update_in(cx, |pane, window, cx| {
13953            pane.activate_item(2, true, true, window, cx);
13954            assert_eq!(
13955                pane.active_item().unwrap().item_id(),
13956                dirty_multi_buffer.item_id(),
13957                "Should select the multi buffer in the pane"
13958            );
13959        });
13960        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
13961            pane.close_active_item(
13962                &CloseActiveItem {
13963                    save_intent: None,
13964                    close_pinned: false,
13965                },
13966                window,
13967                cx,
13968            )
13969        });
13970        cx.background_executor.run_until_parked();
13971        assert!(
13972            !cx.has_pending_prompt(),
13973            "All dirty items from the multi buffer are in the pane still, no save prompts should be shown"
13974        );
13975        close_multi_buffer_task
13976            .await
13977            .expect("Closing multi buffer failed");
13978        pane.update(cx, |pane, cx| {
13979            assert_eq!(dirty_regular_buffer.read(cx).save_count, 0);
13980            assert_eq!(dirty_multi_buffer.read(cx).save_count, 0);
13981            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 0);
13982            assert_eq!(
13983                pane.items()
13984                    .map(|item| item.item_id())
13985                    .sorted()
13986                    .collect::<Vec<_>>(),
13987                vec![
13988                    dirty_regular_buffer.item_id(),
13989                    dirty_regular_buffer_2.item_id(),
13990                ],
13991                "Should have no multi buffer left in the pane"
13992            );
13993            assert!(dirty_regular_buffer.read(cx).is_dirty);
13994            assert!(dirty_regular_buffer_2.read(cx).is_dirty);
13995        });
13996    }
13997
13998    #[gpui::test]
13999    async fn test_move_focused_panel_to_next_position(cx: &mut gpui::TestAppContext) {
14000        init_test(cx);
14001        let fs = FakeFs::new(cx.executor());
14002        let project = Project::test(fs, [], cx).await;
14003        let (multi_workspace, cx) =
14004            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
14005        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
14006
14007        // Add a new panel to the right dock, opening the dock and setting the
14008        // focus to the new panel.
14009        let panel = workspace.update_in(cx, |workspace, window, cx| {
14010            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
14011            workspace.add_panel(panel.clone(), window, cx);
14012
14013            workspace
14014                .right_dock()
14015                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
14016
14017            workspace.toggle_panel_focus::<TestPanel>(window, cx);
14018
14019            panel
14020        });
14021
14022        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
14023        // panel to the next valid position which, in this case, is the left
14024        // dock.
14025        cx.dispatch_action(MoveFocusedPanelToNextPosition);
14026        workspace.update(cx, |workspace, cx| {
14027            assert!(workspace.left_dock().read(cx).is_open());
14028            assert_eq!(panel.read(cx).position, DockPosition::Left);
14029        });
14030
14031        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
14032        // panel to the next valid position which, in this case, is the bottom
14033        // dock.
14034        cx.dispatch_action(MoveFocusedPanelToNextPosition);
14035        workspace.update(cx, |workspace, cx| {
14036            assert!(workspace.bottom_dock().read(cx).is_open());
14037            assert_eq!(panel.read(cx).position, DockPosition::Bottom);
14038        });
14039
14040        // Dispatch the `MoveFocusedPanelToNextPosition` action again, this time
14041        // around moving the panel to its initial position, the right dock.
14042        cx.dispatch_action(MoveFocusedPanelToNextPosition);
14043        workspace.update(cx, |workspace, cx| {
14044            assert!(workspace.right_dock().read(cx).is_open());
14045            assert_eq!(panel.read(cx).position, DockPosition::Right);
14046        });
14047
14048        // Remove focus from the panel, ensuring that, if the panel is not
14049        // focused, the `MoveFocusedPanelToNextPosition` action does not update
14050        // the panel's position, so the panel is still in the right dock.
14051        workspace.update_in(cx, |workspace, window, cx| {
14052            workspace.toggle_panel_focus::<TestPanel>(window, cx);
14053        });
14054
14055        cx.dispatch_action(MoveFocusedPanelToNextPosition);
14056        workspace.update(cx, |workspace, cx| {
14057            assert!(workspace.right_dock().read(cx).is_open());
14058            assert_eq!(panel.read(cx).position, DockPosition::Right);
14059        });
14060    }
14061
14062    #[gpui::test]
14063    async fn test_moving_items_create_panes(cx: &mut TestAppContext) {
14064        init_test(cx);
14065
14066        let fs = FakeFs::new(cx.executor());
14067        let project = Project::test(fs, [], cx).await;
14068        let (workspace, cx) =
14069            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
14070
14071        let item_1 = cx.new(|cx| {
14072            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
14073        });
14074        workspace.update_in(cx, |workspace, window, cx| {
14075            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
14076            workspace.move_item_to_pane_in_direction(
14077                &MoveItemToPaneInDirection {
14078                    direction: SplitDirection::Right,
14079                    focus: true,
14080                    clone: false,
14081                },
14082                window,
14083                cx,
14084            );
14085            workspace.move_item_to_pane_at_index(
14086                &MoveItemToPane {
14087                    destination: 3,
14088                    focus: true,
14089                    clone: false,
14090                },
14091                window,
14092                cx,
14093            );
14094
14095            assert_eq!(workspace.panes.len(), 1, "No new panes were created");
14096            assert_eq!(
14097                pane_items_paths(&workspace.active_pane, cx),
14098                vec!["first.txt".to_string()],
14099                "Single item was not moved anywhere"
14100            );
14101        });
14102
14103        let item_2 = cx.new(|cx| {
14104            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "second.txt", cx)])
14105        });
14106        workspace.update_in(cx, |workspace, window, cx| {
14107            workspace.add_item_to_active_pane(Box::new(item_2), None, true, window, cx);
14108            assert_eq!(
14109                pane_items_paths(&workspace.panes[0], cx),
14110                vec!["first.txt".to_string(), "second.txt".to_string()],
14111            );
14112            workspace.move_item_to_pane_in_direction(
14113                &MoveItemToPaneInDirection {
14114                    direction: SplitDirection::Right,
14115                    focus: true,
14116                    clone: false,
14117                },
14118                window,
14119                cx,
14120            );
14121
14122            assert_eq!(workspace.panes.len(), 2, "A new pane should be created");
14123            assert_eq!(
14124                pane_items_paths(&workspace.panes[0], cx),
14125                vec!["first.txt".to_string()],
14126                "After moving, one item should be left in the original pane"
14127            );
14128            assert_eq!(
14129                pane_items_paths(&workspace.panes[1], cx),
14130                vec!["second.txt".to_string()],
14131                "New item should have been moved to the new pane"
14132            );
14133        });
14134
14135        let item_3 = cx.new(|cx| {
14136            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "third.txt", cx)])
14137        });
14138        workspace.update_in(cx, |workspace, window, cx| {
14139            let original_pane = workspace.panes[0].clone();
14140            workspace.set_active_pane(&original_pane, window, cx);
14141            workspace.add_item_to_active_pane(Box::new(item_3), None, true, window, cx);
14142            assert_eq!(workspace.panes.len(), 2, "No new panes were created");
14143            assert_eq!(
14144                pane_items_paths(&workspace.active_pane, cx),
14145                vec!["first.txt".to_string(), "third.txt".to_string()],
14146                "New pane should be ready to move one item out"
14147            );
14148
14149            workspace.move_item_to_pane_at_index(
14150                &MoveItemToPane {
14151                    destination: 3,
14152                    focus: true,
14153                    clone: false,
14154                },
14155                window,
14156                cx,
14157            );
14158            assert_eq!(workspace.panes.len(), 3, "A new pane should be created");
14159            assert_eq!(
14160                pane_items_paths(&workspace.active_pane, cx),
14161                vec!["first.txt".to_string()],
14162                "After moving, one item should be left in the original pane"
14163            );
14164            assert_eq!(
14165                pane_items_paths(&workspace.panes[1], cx),
14166                vec!["second.txt".to_string()],
14167                "Previously created pane should be unchanged"
14168            );
14169            assert_eq!(
14170                pane_items_paths(&workspace.panes[2], cx),
14171                vec!["third.txt".to_string()],
14172                "New item should have been moved to the new pane"
14173            );
14174        });
14175    }
14176
14177    #[gpui::test]
14178    async fn test_moving_items_can_clone_panes(cx: &mut TestAppContext) {
14179        init_test(cx);
14180
14181        let fs = FakeFs::new(cx.executor());
14182        let project = Project::test(fs, [], cx).await;
14183        let (workspace, cx) =
14184            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
14185
14186        let item_1 = cx.new(|cx| {
14187            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
14188        });
14189        workspace.update_in(cx, |workspace, window, cx| {
14190            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
14191            workspace.move_item_to_pane_in_direction(
14192                &MoveItemToPaneInDirection {
14193                    direction: SplitDirection::Right,
14194                    focus: true,
14195                    clone: true,
14196                },
14197                window,
14198                cx,
14199            );
14200        });
14201        cx.run_until_parked();
14202        workspace.update_in(cx, |workspace, window, cx| {
14203            workspace.move_item_to_pane_at_index(
14204                &MoveItemToPane {
14205                    destination: 3,
14206                    focus: true,
14207                    clone: true,
14208                },
14209                window,
14210                cx,
14211            );
14212        });
14213        cx.run_until_parked();
14214
14215        workspace.update(cx, |workspace, cx| {
14216            assert_eq!(workspace.panes.len(), 3, "Two new panes were created");
14217            for pane in workspace.panes() {
14218                assert_eq!(
14219                    pane_items_paths(pane, cx),
14220                    vec!["first.txt".to_string()],
14221                    "Single item exists in all panes"
14222                );
14223            }
14224        });
14225
14226        // verify that the active pane has been updated after waiting for the
14227        // pane focus event to fire and resolve
14228        workspace.read_with(cx, |workspace, _app| {
14229            assert_eq!(
14230                workspace.active_pane(),
14231                &workspace.panes[2],
14232                "The third pane should be the active one: {:?}",
14233                workspace.panes
14234            );
14235        })
14236    }
14237
14238    #[gpui::test]
14239    async fn test_close_item_in_all_panes(cx: &mut TestAppContext) {
14240        init_test(cx);
14241
14242        let fs = FakeFs::new(cx.executor());
14243        fs.insert_tree("/root", json!({ "test.txt": "" })).await;
14244
14245        let project = Project::test(fs, ["root".as_ref()], cx).await;
14246        let (workspace, cx) =
14247            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
14248
14249        let pane_a = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
14250        // Add item to pane A with project path
14251        let item_a = cx.new(|cx| {
14252            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
14253        });
14254        workspace.update_in(cx, |workspace, window, cx| {
14255            workspace.add_item_to_active_pane(Box::new(item_a.clone()), None, true, window, cx)
14256        });
14257
14258        // Split to create pane B
14259        let pane_b = workspace.update_in(cx, |workspace, window, cx| {
14260            workspace.split_pane(pane_a.clone(), SplitDirection::Right, window, cx)
14261        });
14262
14263        // Add item with SAME project path to pane B, and pin it
14264        let item_b = cx.new(|cx| {
14265            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
14266        });
14267        pane_b.update_in(cx, |pane, window, cx| {
14268            pane.add_item(Box::new(item_b.clone()), true, true, None, window, cx);
14269            pane.set_pinned_count(1);
14270        });
14271
14272        assert_eq!(pane_a.read_with(cx, |pane, _| pane.items_len()), 1);
14273        assert_eq!(pane_b.read_with(cx, |pane, _| pane.items_len()), 1);
14274
14275        // close_pinned: false should only close the unpinned copy
14276        workspace.update_in(cx, |workspace, window, cx| {
14277            workspace.close_item_in_all_panes(
14278                &CloseItemInAllPanes {
14279                    save_intent: Some(SaveIntent::Close),
14280                    close_pinned: false,
14281                },
14282                window,
14283                cx,
14284            )
14285        });
14286        cx.executor().run_until_parked();
14287
14288        let item_count_a = pane_a.read_with(cx, |pane, _| pane.items_len());
14289        let item_count_b = pane_b.read_with(cx, |pane, _| pane.items_len());
14290        assert_eq!(item_count_a, 0, "Unpinned item in pane A should be closed");
14291        assert_eq!(item_count_b, 1, "Pinned item in pane B should remain");
14292
14293        // Split again, seeing as closing the previous item also closed its
14294        // pane, so only pane remains, which does not allow us to properly test
14295        // that both items close when `close_pinned: true`.
14296        let pane_c = workspace.update_in(cx, |workspace, window, cx| {
14297            workspace.split_pane(pane_b.clone(), SplitDirection::Right, window, cx)
14298        });
14299
14300        // Add an item with the same project path to pane C so that
14301        // close_item_in_all_panes can determine what to close across all panes
14302        // (it reads the active item from the active pane, and split_pane
14303        // creates an empty pane).
14304        let item_c = cx.new(|cx| {
14305            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
14306        });
14307        pane_c.update_in(cx, |pane, window, cx| {
14308            pane.add_item(Box::new(item_c.clone()), true, true, None, window, cx);
14309        });
14310
14311        // close_pinned: true should close the pinned copy too
14312        workspace.update_in(cx, |workspace, window, cx| {
14313            let panes_count = workspace.panes().len();
14314            assert_eq!(panes_count, 2, "Workspace should have two panes (B and C)");
14315
14316            workspace.close_item_in_all_panes(
14317                &CloseItemInAllPanes {
14318                    save_intent: Some(SaveIntent::Close),
14319                    close_pinned: true,
14320                },
14321                window,
14322                cx,
14323            )
14324        });
14325        cx.executor().run_until_parked();
14326
14327        let item_count_b = pane_b.read_with(cx, |pane, _| pane.items_len());
14328        let item_count_c = pane_c.read_with(cx, |pane, _| pane.items_len());
14329        assert_eq!(item_count_b, 0, "Pinned item in pane B should be closed");
14330        assert_eq!(item_count_c, 0, "Unpinned item in pane C should be closed");
14331    }
14332
14333    mod register_project_item_tests {
14334
14335        use super::*;
14336
14337        // View
14338        struct TestPngItemView {
14339            focus_handle: FocusHandle,
14340        }
14341        // Model
14342        struct TestPngItem {}
14343
14344        impl project::ProjectItem for TestPngItem {
14345            fn try_open(
14346                _project: &Entity<Project>,
14347                path: &ProjectPath,
14348                cx: &mut App,
14349            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
14350                if path.path.extension().unwrap() == "png" {
14351                    Some(cx.spawn(async move |cx| Ok(cx.new(|_| TestPngItem {}))))
14352                } else {
14353                    None
14354                }
14355            }
14356
14357            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
14358                None
14359            }
14360
14361            fn project_path(&self, _: &App) -> Option<ProjectPath> {
14362                None
14363            }
14364
14365            fn is_dirty(&self) -> bool {
14366                false
14367            }
14368        }
14369
14370        impl Item for TestPngItemView {
14371            type Event = ();
14372            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
14373                "".into()
14374            }
14375        }
14376        impl EventEmitter<()> for TestPngItemView {}
14377        impl Focusable for TestPngItemView {
14378            fn focus_handle(&self, _cx: &App) -> FocusHandle {
14379                self.focus_handle.clone()
14380            }
14381        }
14382
14383        impl Render for TestPngItemView {
14384            fn render(
14385                &mut self,
14386                _window: &mut Window,
14387                _cx: &mut Context<Self>,
14388            ) -> impl IntoElement {
14389                Empty
14390            }
14391        }
14392
14393        impl ProjectItem for TestPngItemView {
14394            type Item = TestPngItem;
14395
14396            fn for_project_item(
14397                _project: Entity<Project>,
14398                _pane: Option<&Pane>,
14399                _item: Entity<Self::Item>,
14400                _: &mut Window,
14401                cx: &mut Context<Self>,
14402            ) -> Self
14403            where
14404                Self: Sized,
14405            {
14406                Self {
14407                    focus_handle: cx.focus_handle(),
14408                }
14409            }
14410        }
14411
14412        // View
14413        struct TestIpynbItemView {
14414            focus_handle: FocusHandle,
14415        }
14416        // Model
14417        struct TestIpynbItem {}
14418
14419        impl project::ProjectItem for TestIpynbItem {
14420            fn try_open(
14421                _project: &Entity<Project>,
14422                path: &ProjectPath,
14423                cx: &mut App,
14424            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
14425                if path.path.extension().unwrap() == "ipynb" {
14426                    Some(cx.spawn(async move |cx| Ok(cx.new(|_| TestIpynbItem {}))))
14427                } else {
14428                    None
14429                }
14430            }
14431
14432            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
14433                None
14434            }
14435
14436            fn project_path(&self, _: &App) -> Option<ProjectPath> {
14437                None
14438            }
14439
14440            fn is_dirty(&self) -> bool {
14441                false
14442            }
14443        }
14444
14445        impl Item for TestIpynbItemView {
14446            type Event = ();
14447            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
14448                "".into()
14449            }
14450        }
14451        impl EventEmitter<()> for TestIpynbItemView {}
14452        impl Focusable for TestIpynbItemView {
14453            fn focus_handle(&self, _cx: &App) -> FocusHandle {
14454                self.focus_handle.clone()
14455            }
14456        }
14457
14458        impl Render for TestIpynbItemView {
14459            fn render(
14460                &mut self,
14461                _window: &mut Window,
14462                _cx: &mut Context<Self>,
14463            ) -> impl IntoElement {
14464                Empty
14465            }
14466        }
14467
14468        impl ProjectItem for TestIpynbItemView {
14469            type Item = TestIpynbItem;
14470
14471            fn for_project_item(
14472                _project: Entity<Project>,
14473                _pane: Option<&Pane>,
14474                _item: Entity<Self::Item>,
14475                _: &mut Window,
14476                cx: &mut Context<Self>,
14477            ) -> Self
14478            where
14479                Self: Sized,
14480            {
14481                Self {
14482                    focus_handle: cx.focus_handle(),
14483                }
14484            }
14485        }
14486
14487        struct TestAlternatePngItemView {
14488            focus_handle: FocusHandle,
14489        }
14490
14491        impl Item for TestAlternatePngItemView {
14492            type Event = ();
14493            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
14494                "".into()
14495            }
14496        }
14497
14498        impl EventEmitter<()> for TestAlternatePngItemView {}
14499        impl Focusable for TestAlternatePngItemView {
14500            fn focus_handle(&self, _cx: &App) -> FocusHandle {
14501                self.focus_handle.clone()
14502            }
14503        }
14504
14505        impl Render for TestAlternatePngItemView {
14506            fn render(
14507                &mut self,
14508                _window: &mut Window,
14509                _cx: &mut Context<Self>,
14510            ) -> impl IntoElement {
14511                Empty
14512            }
14513        }
14514
14515        impl ProjectItem for TestAlternatePngItemView {
14516            type Item = TestPngItem;
14517
14518            fn for_project_item(
14519                _project: Entity<Project>,
14520                _pane: Option<&Pane>,
14521                _item: Entity<Self::Item>,
14522                _: &mut Window,
14523                cx: &mut Context<Self>,
14524            ) -> Self
14525            where
14526                Self: Sized,
14527            {
14528                Self {
14529                    focus_handle: cx.focus_handle(),
14530                }
14531            }
14532        }
14533
14534        #[gpui::test]
14535        async fn test_register_project_item(cx: &mut TestAppContext) {
14536            init_test(cx);
14537
14538            cx.update(|cx| {
14539                register_project_item::<TestPngItemView>(cx);
14540                register_project_item::<TestIpynbItemView>(cx);
14541            });
14542
14543            let fs = FakeFs::new(cx.executor());
14544            fs.insert_tree(
14545                "/root1",
14546                json!({
14547                    "one.png": "BINARYDATAHERE",
14548                    "two.ipynb": "{ totally a notebook }",
14549                    "three.txt": "editing text, sure why not?"
14550                }),
14551            )
14552            .await;
14553
14554            let project = Project::test(fs, ["root1".as_ref()], cx).await;
14555            let (workspace, cx) =
14556                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
14557
14558            let worktree_id = project.update(cx, |project, cx| {
14559                project.worktrees(cx).next().unwrap().read(cx).id()
14560            });
14561
14562            let handle = workspace
14563                .update_in(cx, |workspace, window, cx| {
14564                    let project_path = (worktree_id, rel_path("one.png"));
14565                    workspace.open_path(project_path, None, true, window, cx)
14566                })
14567                .await
14568                .unwrap();
14569
14570            // Now we can check if the handle we got back errored or not
14571            assert_eq!(
14572                handle.to_any_view().entity_type(),
14573                TypeId::of::<TestPngItemView>()
14574            );
14575
14576            let handle = workspace
14577                .update_in(cx, |workspace, window, cx| {
14578                    let project_path = (worktree_id, rel_path("two.ipynb"));
14579                    workspace.open_path(project_path, None, true, window, cx)
14580                })
14581                .await
14582                .unwrap();
14583
14584            assert_eq!(
14585                handle.to_any_view().entity_type(),
14586                TypeId::of::<TestIpynbItemView>()
14587            );
14588
14589            let handle = workspace
14590                .update_in(cx, |workspace, window, cx| {
14591                    let project_path = (worktree_id, rel_path("three.txt"));
14592                    workspace.open_path(project_path, None, true, window, cx)
14593                })
14594                .await;
14595            assert!(handle.is_err());
14596        }
14597
14598        #[gpui::test]
14599        async fn test_register_project_item_two_enter_one_leaves(cx: &mut TestAppContext) {
14600            init_test(cx);
14601
14602            cx.update(|cx| {
14603                register_project_item::<TestPngItemView>(cx);
14604                register_project_item::<TestAlternatePngItemView>(cx);
14605            });
14606
14607            let fs = FakeFs::new(cx.executor());
14608            fs.insert_tree(
14609                "/root1",
14610                json!({
14611                    "one.png": "BINARYDATAHERE",
14612                    "two.ipynb": "{ totally a notebook }",
14613                    "three.txt": "editing text, sure why not?"
14614                }),
14615            )
14616            .await;
14617            let project = Project::test(fs, ["root1".as_ref()], cx).await;
14618            let (workspace, cx) =
14619                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
14620            let worktree_id = project.update(cx, |project, cx| {
14621                project.worktrees(cx).next().unwrap().read(cx).id()
14622            });
14623
14624            let handle = workspace
14625                .update_in(cx, |workspace, window, cx| {
14626                    let project_path = (worktree_id, rel_path("one.png"));
14627                    workspace.open_path(project_path, None, true, window, cx)
14628                })
14629                .await
14630                .unwrap();
14631
14632            // This _must_ be the second item registered
14633            assert_eq!(
14634                handle.to_any_view().entity_type(),
14635                TypeId::of::<TestAlternatePngItemView>()
14636            );
14637
14638            let handle = workspace
14639                .update_in(cx, |workspace, window, cx| {
14640                    let project_path = (worktree_id, rel_path("three.txt"));
14641                    workspace.open_path(project_path, None, true, window, cx)
14642                })
14643                .await;
14644            assert!(handle.is_err());
14645        }
14646    }
14647
14648    #[gpui::test]
14649    async fn test_status_bar_visibility(cx: &mut TestAppContext) {
14650        init_test(cx);
14651
14652        let fs = FakeFs::new(cx.executor());
14653        let project = Project::test(fs, [], cx).await;
14654        let (workspace, _cx) =
14655            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
14656
14657        // Test with status bar shown (default)
14658        workspace.read_with(cx, |workspace, cx| {
14659            let visible = workspace.status_bar_visible(cx);
14660            assert!(visible, "Status bar should be visible by default");
14661        });
14662
14663        // Test with status bar hidden
14664        cx.update_global(|store: &mut SettingsStore, cx| {
14665            store.update_user_settings(cx, |settings| {
14666                settings.status_bar.get_or_insert_default().show = Some(false);
14667            });
14668        });
14669
14670        workspace.read_with(cx, |workspace, cx| {
14671            let visible = workspace.status_bar_visible(cx);
14672            assert!(!visible, "Status bar should be hidden when show is false");
14673        });
14674
14675        // Test with status bar shown explicitly
14676        cx.update_global(|store: &mut SettingsStore, cx| {
14677            store.update_user_settings(cx, |settings| {
14678                settings.status_bar.get_or_insert_default().show = Some(true);
14679            });
14680        });
14681
14682        workspace.read_with(cx, |workspace, cx| {
14683            let visible = workspace.status_bar_visible(cx);
14684            assert!(visible, "Status bar should be visible when show is true");
14685        });
14686    }
14687
14688    #[gpui::test]
14689    async fn test_pane_close_active_item(cx: &mut TestAppContext) {
14690        init_test(cx);
14691
14692        let fs = FakeFs::new(cx.executor());
14693        let project = Project::test(fs, [], cx).await;
14694        let (multi_workspace, cx) =
14695            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
14696        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
14697        let panel = workspace.update_in(cx, |workspace, window, cx| {
14698            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
14699            workspace.add_panel(panel.clone(), window, cx);
14700
14701            workspace
14702                .right_dock()
14703                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
14704
14705            panel
14706        });
14707
14708        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
14709        let item_a = cx.new(TestItem::new);
14710        let item_b = cx.new(TestItem::new);
14711        let item_a_id = item_a.entity_id();
14712        let item_b_id = item_b.entity_id();
14713
14714        pane.update_in(cx, |pane, window, cx| {
14715            pane.add_item(Box::new(item_a.clone()), true, true, None, window, cx);
14716            pane.add_item(Box::new(item_b.clone()), true, true, None, window, cx);
14717        });
14718
14719        pane.read_with(cx, |pane, _| {
14720            assert_eq!(pane.items_len(), 2);
14721            assert_eq!(pane.active_item().unwrap().item_id(), item_b_id);
14722        });
14723
14724        workspace.update_in(cx, |workspace, window, cx| {
14725            workspace.toggle_panel_focus::<TestPanel>(window, cx);
14726        });
14727
14728        workspace.update_in(cx, |_, window, cx| {
14729            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
14730        });
14731
14732        // Assert that the `pane::CloseActiveItem` action is handled at the
14733        // workspace level when one of the dock panels is focused and, in that
14734        // case, the center pane's active item is closed but the focus is not
14735        // moved.
14736        cx.dispatch_action(pane::CloseActiveItem::default());
14737        cx.run_until_parked();
14738
14739        pane.read_with(cx, |pane, _| {
14740            assert_eq!(pane.items_len(), 1);
14741            assert_eq!(pane.active_item().unwrap().item_id(), item_a_id);
14742        });
14743
14744        workspace.update_in(cx, |workspace, window, cx| {
14745            assert!(workspace.right_dock().read(cx).is_open());
14746            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
14747        });
14748    }
14749
14750    #[gpui::test]
14751    async fn test_panel_zoom_preserved_across_workspace_switch(cx: &mut TestAppContext) {
14752        init_test(cx);
14753        let fs = FakeFs::new(cx.executor());
14754
14755        let project_a = Project::test(fs.clone(), [], cx).await;
14756        let project_b = Project::test(fs, [], cx).await;
14757
14758        let multi_workspace_handle =
14759            cx.add_window(|window, cx| MultiWorkspace::test_new(project_a.clone(), window, cx));
14760        cx.run_until_parked();
14761
14762        multi_workspace_handle
14763            .update(cx, |mw, _window, cx| {
14764                mw.open_sidebar(cx);
14765            })
14766            .unwrap();
14767
14768        let workspace_a = multi_workspace_handle
14769            .read_with(cx, |mw, _| mw.workspace().clone())
14770            .unwrap();
14771
14772        let _workspace_b = multi_workspace_handle
14773            .update(cx, |mw, window, cx| {
14774                mw.test_add_workspace(project_b, window, cx)
14775            })
14776            .unwrap();
14777
14778        // Switch to workspace A
14779        multi_workspace_handle
14780            .update(cx, |mw, window, cx| {
14781                let workspace = mw.workspaces(cx).into_iter().next().unwrap();
14782                mw.activate(workspace, window, cx);
14783            })
14784            .unwrap();
14785
14786        let cx = &mut VisualTestContext::from_window(multi_workspace_handle.into(), cx);
14787
14788        // Add a panel to workspace A's right dock and open the dock
14789        let panel = workspace_a.update_in(cx, |workspace, window, cx| {
14790            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
14791            workspace.add_panel(panel.clone(), window, cx);
14792            workspace
14793                .right_dock()
14794                .update(cx, |dock, cx| dock.set_open(true, window, cx));
14795            panel
14796        });
14797
14798        // Focus the panel through the workspace (matching existing test pattern)
14799        workspace_a.update_in(cx, |workspace, window, cx| {
14800            workspace.toggle_panel_focus::<TestPanel>(window, cx);
14801        });
14802
14803        // Zoom the panel
14804        panel.update_in(cx, |panel, window, cx| {
14805            panel.set_zoomed(true, window, cx);
14806        });
14807
14808        // Verify the panel is zoomed and the dock is open
14809        workspace_a.update_in(cx, |workspace, window, cx| {
14810            assert!(
14811                workspace.right_dock().read(cx).is_open(),
14812                "dock should be open before switch"
14813            );
14814            assert!(
14815                panel.is_zoomed(window, cx),
14816                "panel should be zoomed before switch"
14817            );
14818            assert!(
14819                panel.read(cx).focus_handle(cx).contains_focused(window, cx),
14820                "panel should be focused before switch"
14821            );
14822        });
14823
14824        // Switch to workspace B
14825        multi_workspace_handle
14826            .update(cx, |mw, window, cx| {
14827                let workspace = mw.workspaces(cx).into_iter().nth(1).unwrap();
14828                mw.activate(workspace, window, cx);
14829            })
14830            .unwrap();
14831        cx.run_until_parked();
14832
14833        // Switch back to workspace A
14834        multi_workspace_handle
14835            .update(cx, |mw, window, cx| {
14836                let workspace = mw.workspaces(cx).into_iter().next().unwrap();
14837                mw.activate(workspace, window, cx);
14838            })
14839            .unwrap();
14840        cx.run_until_parked();
14841
14842        // Verify the panel is still zoomed and the dock is still open
14843        workspace_a.update_in(cx, |workspace, window, cx| {
14844            assert!(
14845                workspace.right_dock().read(cx).is_open(),
14846                "dock should still be open after switching back"
14847            );
14848            assert!(
14849                panel.is_zoomed(window, cx),
14850                "panel should still be zoomed after switching back"
14851            );
14852        });
14853    }
14854
14855    fn pane_items_paths(pane: &Entity<Pane>, cx: &App) -> Vec<String> {
14856        pane.read(cx)
14857            .items()
14858            .flat_map(|item| {
14859                item.project_paths(cx)
14860                    .into_iter()
14861                    .map(|path| path.path.display(PathStyle::local()).into_owned())
14862            })
14863            .collect()
14864    }
14865
14866    pub fn init_test(cx: &mut TestAppContext) {
14867        cx.update(|cx| {
14868            let settings_store = SettingsStore::test(cx);
14869            cx.set_global(settings_store);
14870            cx.set_global(db::AppDatabase::test_new());
14871            theme_settings::init(theme::LoadThemes::JustBase, cx);
14872        });
14873    }
14874
14875    #[gpui::test]
14876    async fn test_toggle_theme_mode_persists_and_updates_active_theme(cx: &mut TestAppContext) {
14877        use settings::{ThemeName, ThemeSelection};
14878        use theme::SystemAppearance;
14879        use zed_actions::theme::ToggleMode;
14880
14881        init_test(cx);
14882
14883        let fs = FakeFs::new(cx.executor());
14884        let settings_fs: Arc<dyn fs::Fs> = fs.clone();
14885
14886        fs.insert_tree(path!("/root"), json!({ "file.rs": "fn main() {}\n" }))
14887            .await;
14888
14889        // Build a test project and workspace view so the test can invoke
14890        // the workspace action handler the same way the UI would.
14891        let project = Project::test(fs.clone(), [path!("/root").as_ref()], cx).await;
14892        let (workspace, cx) =
14893            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
14894
14895        // Seed the settings file with a plain static light theme so the
14896        // first toggle always starts from a known persisted state.
14897        workspace.update_in(cx, |_workspace, _window, cx| {
14898            *SystemAppearance::global_mut(cx) = SystemAppearance(theme::Appearance::Light);
14899            settings::update_settings_file(settings_fs.clone(), cx, |settings, _cx| {
14900                settings.theme.theme = Some(ThemeSelection::Static(ThemeName("One Light".into())));
14901            });
14902        });
14903        cx.executor().advance_clock(Duration::from_millis(200));
14904        cx.run_until_parked();
14905
14906        // Confirm the initial persisted settings contain the static theme
14907        // we just wrote before any toggling happens.
14908        let settings_text = SettingsStore::load_settings(&settings_fs).await.unwrap();
14909        assert!(settings_text.contains(r#""theme": "One Light""#));
14910
14911        // Toggle once. This should migrate the persisted theme settings
14912        // into light/dark slots and enable system mode.
14913        workspace.update_in(cx, |workspace, window, cx| {
14914            workspace.toggle_theme_mode(&ToggleMode, window, cx);
14915        });
14916        cx.executor().advance_clock(Duration::from_millis(200));
14917        cx.run_until_parked();
14918
14919        // 1. Static -> Dynamic
14920        // this assertion checks theme changed from static to dynamic.
14921        let settings_text = SettingsStore::load_settings(&settings_fs).await.unwrap();
14922        let parsed: serde_json::Value = settings::parse_json_with_comments(&settings_text).unwrap();
14923        assert_eq!(
14924            parsed["theme"],
14925            serde_json::json!({
14926                "mode": "system",
14927                "light": "One Light",
14928                "dark": "One Dark"
14929            })
14930        );
14931
14932        // 2. Toggle again, suppose it will change the mode to light
14933        workspace.update_in(cx, |workspace, window, cx| {
14934            workspace.toggle_theme_mode(&ToggleMode, window, cx);
14935        });
14936        cx.executor().advance_clock(Duration::from_millis(200));
14937        cx.run_until_parked();
14938
14939        let settings_text = SettingsStore::load_settings(&settings_fs).await.unwrap();
14940        assert!(settings_text.contains(r#""mode": "light""#));
14941    }
14942
14943    fn dirty_project_item(id: u64, path: &str, cx: &mut App) -> Entity<TestProjectItem> {
14944        let item = TestProjectItem::new(id, path, cx);
14945        item.update(cx, |item, _| {
14946            item.is_dirty = true;
14947        });
14948        item
14949    }
14950
14951    #[gpui::test]
14952    async fn test_zoomed_panel_without_pane_preserved_on_center_focus(
14953        cx: &mut gpui::TestAppContext,
14954    ) {
14955        init_test(cx);
14956        let fs = FakeFs::new(cx.executor());
14957
14958        let project = Project::test(fs, [], cx).await;
14959        let (workspace, cx) =
14960            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
14961
14962        let panel = workspace.update_in(cx, |workspace, window, cx| {
14963            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
14964            workspace.add_panel(panel.clone(), window, cx);
14965            workspace
14966                .right_dock()
14967                .update(cx, |dock, cx| dock.set_open(true, window, cx));
14968            panel
14969        });
14970
14971        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
14972        pane.update_in(cx, |pane, window, cx| {
14973            let item = cx.new(TestItem::new);
14974            pane.add_item(Box::new(item), true, true, None, window, cx);
14975        });
14976
14977        // Transfer focus to the panel, then zoom it. Using toggle_panel_focus
14978        // mirrors the real-world flow and avoids side effects from directly
14979        // focusing the panel while the center pane is active.
14980        workspace.update_in(cx, |workspace, window, cx| {
14981            workspace.toggle_panel_focus::<TestPanel>(window, cx);
14982        });
14983
14984        panel.update_in(cx, |panel, window, cx| {
14985            panel.set_zoomed(true, window, cx);
14986        });
14987
14988        workspace.update_in(cx, |workspace, window, cx| {
14989            assert!(workspace.right_dock().read(cx).is_open());
14990            assert!(panel.is_zoomed(window, cx));
14991            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
14992        });
14993
14994        // Simulate a spurious pane::Event::Focus on the center pane while the
14995        // panel still has focus. This mirrors what happens during macOS window
14996        // activation: the center pane fires a focus event even though actual
14997        // focus remains on the dock panel.
14998        pane.update_in(cx, |_, _, cx| {
14999            cx.emit(pane::Event::Focus);
15000        });
15001
15002        // The dock must remain open because the panel had focus at the time the
15003        // event was processed. Before the fix, dock_to_preserve was None for
15004        // panels that don't implement pane(), causing the dock to close.
15005        workspace.update_in(cx, |workspace, window, cx| {
15006            assert!(
15007                workspace.right_dock().read(cx).is_open(),
15008                "Dock should stay open when its zoomed panel (without pane()) still has focus"
15009            );
15010            assert!(panel.is_zoomed(window, cx));
15011        });
15012    }
15013
15014    #[gpui::test]
15015    async fn test_panels_stay_open_after_position_change_and_settings_update(
15016        cx: &mut gpui::TestAppContext,
15017    ) {
15018        init_test(cx);
15019        let fs = FakeFs::new(cx.executor());
15020        let project = Project::test(fs, [], cx).await;
15021        let (workspace, cx) =
15022            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
15023
15024        // Add two panels to the left dock and open it.
15025        let (panel_a, panel_b) = workspace.update_in(cx, |workspace, window, cx| {
15026            let panel_a = cx.new(|cx| TestPanel::new(DockPosition::Left, 100, cx));
15027            let panel_b = cx.new(|cx| TestPanel::new(DockPosition::Left, 101, cx));
15028            workspace.add_panel(panel_a.clone(), window, cx);
15029            workspace.add_panel(panel_b.clone(), window, cx);
15030            workspace.left_dock().update(cx, |dock, cx| {
15031                dock.set_open(true, window, cx);
15032                dock.activate_panel(0, window, cx);
15033            });
15034            (panel_a, panel_b)
15035        });
15036
15037        workspace.update_in(cx, |workspace, _, cx| {
15038            assert!(workspace.left_dock().read(cx).is_open());
15039        });
15040
15041        // Simulate a feature flag changing default dock positions: both panels
15042        // move from Left to Right.
15043        workspace.update_in(cx, |_workspace, _window, cx| {
15044            panel_a.update(cx, |p, _cx| p.position = DockPosition::Right);
15045            panel_b.update(cx, |p, _cx| p.position = DockPosition::Right);
15046            cx.update_global::<SettingsStore, _>(|_, _| {});
15047        });
15048
15049        // Both panels should now be in the right dock.
15050        workspace.update_in(cx, |workspace, _, cx| {
15051            let right_dock = workspace.right_dock().read(cx);
15052            assert_eq!(right_dock.panels_len(), 2);
15053        });
15054
15055        // Open the right dock and activate panel_b (simulating the user
15056        // opening the panel after it moved).
15057        workspace.update_in(cx, |workspace, window, cx| {
15058            workspace.right_dock().update(cx, |dock, cx| {
15059                dock.set_open(true, window, cx);
15060                dock.activate_panel(1, window, cx);
15061            });
15062        });
15063
15064        // Now trigger another SettingsStore change
15065        workspace.update_in(cx, |_workspace, _window, cx| {
15066            cx.update_global::<SettingsStore, _>(|_, _| {});
15067        });
15068
15069        workspace.update_in(cx, |workspace, _, cx| {
15070            assert!(
15071                workspace.right_dock().read(cx).is_open(),
15072                "Right dock should still be open after a settings change"
15073            );
15074            assert_eq!(
15075                workspace.right_dock().read(cx).panels_len(),
15076                2,
15077                "Both panels should still be in the right dock"
15078            );
15079        });
15080    }
15081}