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, NextWorkspace, PreviousWorkspace, Sidebar, SidebarEvent, SidebarHandle,
   36    SidebarRenderState, SidebarSide, ToggleWorkspaceSidebar, sidebar_side_context_menu,
   37};
   38pub use path_list::{PathList, SerializedPathList};
   39pub use toast_layer::{ToastAction, ToastLayer, ToastView};
   40
   41use anyhow::{Context as _, Result, anyhow};
   42use client::{
   43    ChannelId, Client, ErrorExt, ParticipantIndex, Status, TypedEnvelope, User, UserStore,
   44    proto::{self, ErrorCode, PanelId, PeerId},
   45};
   46use collections::{HashMap, HashSet, hash_map};
   47use dock::{Dock, DockPosition, PanelButtons, PanelHandle, RESIZE_HANDLE_SIZE};
   48use fs::Fs;
   49use futures::{
   50    Future, FutureExt, StreamExt,
   51    channel::{
   52        mpsc::{self, UnboundedReceiver, UnboundedSender},
   53        oneshot,
   54    },
   55    future::{Shared, try_join_all},
   56};
   57use gpui::{
   58    Action, AnyEntity, AnyView, AnyWeakView, App, AsyncApp, AsyncWindowContext, Axis, Bounds,
   59    Context, CursorStyle, Decorations, DragMoveEvent, Entity, EntityId, EventEmitter, FocusHandle,
   60    Focusable, Global, HitboxBehavior, Hsla, KeyContext, Keystroke, ManagedView, MouseButton,
   61    PathPromptOptions, Point, PromptLevel, Render, ResizeEdge, Size, Stateful, Subscription,
   62    SystemWindowTabController, Task, Tiling, WeakEntity, WindowBounds, WindowHandle, WindowId,
   63    WindowOptions, actions, canvas, point, relative, size, transparent_black,
   64};
   65pub use history_manager::*;
   66pub use item::{
   67    FollowableItem, FollowableItemHandle, Item, ItemHandle, ItemSettings, PreviewTabsSettings,
   68    ProjectItem, SerializableItem, SerializableItemHandle, WeakItemHandle,
   69};
   70use itertools::Itertools;
   71use language::{Buffer, LanguageRegistry, Rope, language_settings::all_language_settings};
   72pub use modal_layer::*;
   73use node_runtime::NodeRuntime;
   74use notifications::{
   75    DetachAndPromptErr, Notifications, dismiss_app_notification,
   76    simple_message_notification::MessageNotification,
   77};
   78pub use pane::*;
   79pub use pane_group::{
   80    ActivePaneDecorator, HANDLE_HITBOX_SIZE, Member, PaneAxis, PaneGroup, PaneRenderContext,
   81    SplitDirection,
   82};
   83use persistence::{SerializedWindowBounds, model::SerializedWorkspace};
   84pub use persistence::{
   85    WorkspaceDb, delete_unloaded_items,
   86    model::{
   87        DockStructure, ItemId, MultiWorkspaceState, SerializedMultiWorkspace,
   88        SerializedWorkspaceLocation, SessionWorkspace,
   89    },
   90    read_serialized_multi_workspaces, resolve_worktree_workspaces,
   91};
   92use postage::stream::Stream;
   93use project::{
   94    DirectoryLister, Project, ProjectEntryId, ProjectGroupKey, ProjectPath, ResolvedPath, Worktree,
   95    WorktreeId, WorktreeSettings,
   96    debugger::{breakpoint_store::BreakpointStoreEvent, session::ThreadStatus},
   97    project_settings::ProjectSettings,
   98    toolchain_store::ToolchainStoreEvent,
   99    trusted_worktrees::{RemoteHostLocation, TrustedWorktrees, TrustedWorktreesEvent},
  100};
  101use remote::{
  102    RemoteClientDelegate, RemoteConnection, RemoteConnectionOptions,
  103    remote_client::ConnectionIdentifier,
  104};
  105use schemars::JsonSchema;
  106use serde::Deserialize;
  107use session::AppSession;
  108use settings::{
  109    CenteredPaddingSettings, Settings, SettingsLocation, SettingsStore, update_settings_file,
  110};
  111
  112use sqlez::{
  113    bindable::{Bind, Column, StaticColumnCount},
  114    statement::Statement,
  115};
  116use status_bar::StatusBar;
  117pub use status_bar::StatusItemView;
  118use std::{
  119    any::TypeId,
  120    borrow::Cow,
  121    cell::RefCell,
  122    cmp,
  123    collections::VecDeque,
  124    env,
  125    hash::Hash,
  126    path::{Path, PathBuf},
  127    process::ExitStatus,
  128    rc::Rc,
  129    sync::{
  130        Arc, LazyLock,
  131        atomic::{AtomicBool, AtomicUsize},
  132    },
  133    time::Duration,
  134};
  135use task::{DebugScenario, SharedTaskContext, SpawnInTerminal};
  136use theme::{ActiveTheme, SystemAppearance};
  137use theme_settings::ThemeSettings;
  138pub use toolbar::{
  139    PaneSearchBarCallbacks, Toolbar, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView,
  140};
  141pub use ui;
  142use ui::{Window, prelude::*};
  143use util::{
  144    ResultExt, TryFutureExt,
  145    paths::{PathStyle, SanitizedPath},
  146    rel_path::RelPath,
  147    serde::default_true,
  148};
  149use uuid::Uuid;
  150pub use workspace_settings::{
  151    AutosaveSetting, BottomDockLayout, FocusFollowsMouse, RestoreOnStartupBehavior,
  152    StatusBarSettings, TabBarSettings, WorkspaceSettings,
  153};
  154use zed_actions::{Spawn, feedback::FileBugReport, theme::ToggleMode};
  155
  156use crate::{dock::PanelSizeState, item::ItemBufferKind, notifications::NotificationId};
  157use crate::{
  158    persistence::{
  159        SerializedAxis,
  160        model::{DockData, SerializedItem, SerializedPane, SerializedPaneGroup},
  161    },
  162    security_modal::SecurityModal,
  163};
  164
  165pub const SERIALIZATION_THROTTLE_TIME: Duration = Duration::from_millis(200);
  166
  167static ZED_WINDOW_SIZE: LazyLock<Option<Size<Pixels>>> = LazyLock::new(|| {
  168    env::var("ZED_WINDOW_SIZE")
  169        .ok()
  170        .as_deref()
  171        .and_then(parse_pixel_size_env_var)
  172});
  173
  174static ZED_WINDOW_POSITION: LazyLock<Option<Point<Pixels>>> = LazyLock::new(|| {
  175    env::var("ZED_WINDOW_POSITION")
  176        .ok()
  177        .as_deref()
  178        .and_then(parse_pixel_position_env_var)
  179});
  180
  181pub trait TerminalProvider {
  182    fn spawn(
  183        &self,
  184        task: SpawnInTerminal,
  185        window: &mut Window,
  186        cx: &mut App,
  187    ) -> Task<Option<Result<ExitStatus>>>;
  188}
  189
  190pub trait DebuggerProvider {
  191    // `active_buffer` is used to resolve build task's name against language-specific tasks.
  192    fn start_session(
  193        &self,
  194        definition: DebugScenario,
  195        task_context: SharedTaskContext,
  196        active_buffer: Option<Entity<Buffer>>,
  197        worktree_id: Option<WorktreeId>,
  198        window: &mut Window,
  199        cx: &mut App,
  200    );
  201
  202    fn spawn_task_or_modal(
  203        &self,
  204        workspace: &mut Workspace,
  205        action: &Spawn,
  206        window: &mut Window,
  207        cx: &mut Context<Workspace>,
  208    );
  209
  210    fn task_scheduled(&self, cx: &mut App);
  211    fn debug_scenario_scheduled(&self, cx: &mut App);
  212    fn debug_scenario_scheduled_last(&self, cx: &App) -> bool;
  213
  214    fn active_thread_state(&self, cx: &App) -> Option<ThreadStatus>;
  215}
  216
  217/// Opens a file or directory.
  218#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  219#[action(namespace = workspace)]
  220pub struct Open {
  221    /// When true, opens in a new window. When false, adds to the current
  222    /// window as a new workspace (multi-workspace).
  223    #[serde(default = "Open::default_create_new_window")]
  224    pub create_new_window: bool,
  225}
  226
  227impl Open {
  228    pub const DEFAULT: Self = Self {
  229        create_new_window: true,
  230    };
  231
  232    /// Used by `#[serde(default)]` on the `create_new_window` field so that
  233    /// the serde default and `Open::DEFAULT` stay in sync.
  234    fn default_create_new_window() -> bool {
  235        Self::DEFAULT.create_new_window
  236    }
  237}
  238
  239impl Default for Open {
  240    fn default() -> Self {
  241        Self::DEFAULT
  242    }
  243}
  244
  245actions!(
  246    workspace,
  247    [
  248        /// Activates the next pane in the workspace.
  249        ActivateNextPane,
  250        /// Activates the previous pane in the workspace.
  251        ActivatePreviousPane,
  252        /// Activates the last pane in the workspace.
  253        ActivateLastPane,
  254        /// Switches to the next window.
  255        ActivateNextWindow,
  256        /// Switches to the previous window.
  257        ActivatePreviousWindow,
  258        /// Adds a folder to the current project.
  259        AddFolderToProject,
  260        /// Clears all notifications.
  261        ClearAllNotifications,
  262        /// Clears all navigation history, including forward/backward navigation, recently opened files, and recently closed tabs. **This action is irreversible**.
  263        ClearNavigationHistory,
  264        /// Closes the active dock.
  265        CloseActiveDock,
  266        /// Closes all docks.
  267        CloseAllDocks,
  268        /// Toggles all docks.
  269        ToggleAllDocks,
  270        /// Closes the current window.
  271        CloseWindow,
  272        /// Closes the current project.
  273        CloseProject,
  274        /// Opens the feedback dialog.
  275        Feedback,
  276        /// Follows the next collaborator in the session.
  277        FollowNextCollaborator,
  278        /// Moves the focused panel to the next position.
  279        MoveFocusedPanelToNextPosition,
  280        /// Creates a new file.
  281        NewFile,
  282        /// Creates a new file in a vertical split.
  283        NewFileSplitVertical,
  284        /// Creates a new file in a horizontal split.
  285        NewFileSplitHorizontal,
  286        /// Opens a new search.
  287        NewSearch,
  288        /// Opens a new window.
  289        NewWindow,
  290        /// Opens multiple files.
  291        OpenFiles,
  292        /// Opens the current location in terminal.
  293        OpenInTerminal,
  294        /// Opens the component preview.
  295        OpenComponentPreview,
  296        /// Reloads the active item.
  297        ReloadActiveItem,
  298        /// Resets the active dock to its default size.
  299        ResetActiveDockSize,
  300        /// Resets all open docks to their default sizes.
  301        ResetOpenDocksSize,
  302        /// Reloads the application
  303        Reload,
  304        /// Saves the current file with a new name.
  305        SaveAs,
  306        /// Saves without formatting.
  307        SaveWithoutFormat,
  308        /// Shuts down all debug adapters.
  309        ShutdownDebugAdapters,
  310        /// Suppresses the current notification.
  311        SuppressNotification,
  312        /// Toggles the bottom dock.
  313        ToggleBottomDock,
  314        /// Toggles centered layout mode.
  315        ToggleCenteredLayout,
  316        /// Toggles edit prediction feature globally for all files.
  317        ToggleEditPrediction,
  318        /// Toggles the left dock.
  319        ToggleLeftDock,
  320        /// Toggles the right dock.
  321        ToggleRightDock,
  322        /// Toggles zoom on the active pane.
  323        ToggleZoom,
  324        /// Toggles read-only mode for the active item (if supported by that item).
  325        ToggleReadOnlyFile,
  326        /// Zooms in on the active pane.
  327        ZoomIn,
  328        /// Zooms out of the active pane.
  329        ZoomOut,
  330        /// If any worktrees are in restricted mode, shows a modal with possible actions.
  331        /// If the modal is shown already, closes it without trusting any worktree.
  332        ToggleWorktreeSecurity,
  333        /// Clears all trusted worktrees, placing them in restricted mode on next open.
  334        /// Requires restart to take effect on already opened projects.
  335        ClearTrustedWorktrees,
  336        /// Stops following a collaborator.
  337        Unfollow,
  338        /// Restores the banner.
  339        RestoreBanner,
  340        /// Toggles expansion of the selected item.
  341        ToggleExpandItem,
  342    ]
  343);
  344
  345/// Activates a specific pane by its index.
  346#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  347#[action(namespace = workspace)]
  348pub struct ActivatePane(pub usize);
  349
  350/// Moves an item to a specific pane by index.
  351#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  352#[action(namespace = workspace)]
  353#[serde(deny_unknown_fields)]
  354pub struct MoveItemToPane {
  355    #[serde(default = "default_1")]
  356    pub destination: usize,
  357    #[serde(default = "default_true")]
  358    pub focus: bool,
  359    #[serde(default)]
  360    pub clone: bool,
  361}
  362
  363fn default_1() -> usize {
  364    1
  365}
  366
  367/// Moves an item to a pane in the specified direction.
  368#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  369#[action(namespace = workspace)]
  370#[serde(deny_unknown_fields)]
  371pub struct MoveItemToPaneInDirection {
  372    #[serde(default = "default_right")]
  373    pub direction: SplitDirection,
  374    #[serde(default = "default_true")]
  375    pub focus: bool,
  376    #[serde(default)]
  377    pub clone: bool,
  378}
  379
  380/// Creates a new file in a split of the desired direction.
  381#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  382#[action(namespace = workspace)]
  383#[serde(deny_unknown_fields)]
  384pub struct NewFileSplit(pub SplitDirection);
  385
  386fn default_right() -> SplitDirection {
  387    SplitDirection::Right
  388}
  389
  390/// Saves all open files in the workspace.
  391#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  392#[action(namespace = workspace)]
  393#[serde(deny_unknown_fields)]
  394pub struct SaveAll {
  395    #[serde(default)]
  396    pub save_intent: Option<SaveIntent>,
  397}
  398
  399/// Saves the current file with the specified options.
  400#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  401#[action(namespace = workspace)]
  402#[serde(deny_unknown_fields)]
  403pub struct Save {
  404    #[serde(default)]
  405    pub save_intent: Option<SaveIntent>,
  406}
  407
  408/// Moves Focus to the central panes in the workspace.
  409#[derive(Clone, Debug, PartialEq, Eq, Action)]
  410#[action(namespace = workspace)]
  411pub struct FocusCenterPane;
  412
  413///  Closes all items and panes in the workspace.
  414#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  415#[action(namespace = workspace)]
  416#[serde(deny_unknown_fields)]
  417pub struct CloseAllItemsAndPanes {
  418    #[serde(default)]
  419    pub save_intent: Option<SaveIntent>,
  420}
  421
  422/// Closes all inactive tabs and panes in the workspace.
  423#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  424#[action(namespace = workspace)]
  425#[serde(deny_unknown_fields)]
  426pub struct CloseInactiveTabsAndPanes {
  427    #[serde(default)]
  428    pub save_intent: Option<SaveIntent>,
  429}
  430
  431/// Closes the active item across all panes.
  432#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  433#[action(namespace = workspace)]
  434#[serde(deny_unknown_fields)]
  435pub struct CloseItemInAllPanes {
  436    #[serde(default)]
  437    pub save_intent: Option<SaveIntent>,
  438    #[serde(default)]
  439    pub close_pinned: bool,
  440}
  441
  442/// Sends a sequence of keystrokes to the active element.
  443#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  444#[action(namespace = workspace)]
  445pub struct SendKeystrokes(pub String);
  446
  447actions!(
  448    project_symbols,
  449    [
  450        /// Toggles the project symbols search.
  451        #[action(name = "Toggle")]
  452        ToggleProjectSymbols
  453    ]
  454);
  455
  456/// Toggles the file finder interface.
  457#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  458#[action(namespace = file_finder, name = "Toggle")]
  459#[serde(deny_unknown_fields)]
  460pub struct ToggleFileFinder {
  461    #[serde(default)]
  462    pub separate_history: bool,
  463}
  464
  465/// Opens a new terminal in the center.
  466#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  467#[action(namespace = workspace)]
  468#[serde(deny_unknown_fields)]
  469pub struct NewCenterTerminal {
  470    /// If true, creates a local terminal even in remote projects.
  471    #[serde(default)]
  472    pub local: bool,
  473}
  474
  475/// Opens a new terminal.
  476#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  477#[action(namespace = workspace)]
  478#[serde(deny_unknown_fields)]
  479pub struct NewTerminal {
  480    /// If true, creates a local terminal even in remote projects.
  481    #[serde(default)]
  482    pub local: bool,
  483}
  484
  485/// Increases size of a currently focused dock by a given amount of pixels.
  486#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  487#[action(namespace = workspace)]
  488#[serde(deny_unknown_fields)]
  489pub struct IncreaseActiveDockSize {
  490    /// For 0px parameter, uses UI font size value.
  491    #[serde(default)]
  492    pub px: u32,
  493}
  494
  495/// Decreases size of a currently focused dock by a given amount of pixels.
  496#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  497#[action(namespace = workspace)]
  498#[serde(deny_unknown_fields)]
  499pub struct DecreaseActiveDockSize {
  500    /// For 0px parameter, uses UI font size value.
  501    #[serde(default)]
  502    pub px: u32,
  503}
  504
  505/// Increases size of all currently visible docks uniformly, by a given amount of pixels.
  506#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  507#[action(namespace = workspace)]
  508#[serde(deny_unknown_fields)]
  509pub struct IncreaseOpenDocksSize {
  510    /// For 0px parameter, uses UI font size value.
  511    #[serde(default)]
  512    pub px: u32,
  513}
  514
  515/// Decreases size of all currently visible docks uniformly, by a given amount of pixels.
  516#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  517#[action(namespace = workspace)]
  518#[serde(deny_unknown_fields)]
  519pub struct DecreaseOpenDocksSize {
  520    /// For 0px parameter, uses UI font size value.
  521    #[serde(default)]
  522    pub px: u32,
  523}
  524
  525actions!(
  526    workspace,
  527    [
  528        /// Activates the pane to the left.
  529        ActivatePaneLeft,
  530        /// Activates the pane to the right.
  531        ActivatePaneRight,
  532        /// Activates the pane above.
  533        ActivatePaneUp,
  534        /// Activates the pane below.
  535        ActivatePaneDown,
  536        /// Swaps the current pane with the one to the left.
  537        SwapPaneLeft,
  538        /// Swaps the current pane with the one to the right.
  539        SwapPaneRight,
  540        /// Swaps the current pane with the one above.
  541        SwapPaneUp,
  542        /// Swaps the current pane with the one below.
  543        SwapPaneDown,
  544        // Swaps the current pane with the first available adjacent pane (searching in order: below, above, right, left) and activates that pane.
  545        SwapPaneAdjacent,
  546        /// Move the current pane to be at the far left.
  547        MovePaneLeft,
  548        /// Move the current pane to be at the far right.
  549        MovePaneRight,
  550        /// Move the current pane to be at the very top.
  551        MovePaneUp,
  552        /// Move the current pane to be at the very bottom.
  553        MovePaneDown,
  554    ]
  555);
  556
  557#[derive(PartialEq, Eq, Debug)]
  558pub enum CloseIntent {
  559    /// Quit the program entirely.
  560    Quit,
  561    /// Close a window.
  562    CloseWindow,
  563    /// Replace the workspace in an existing window.
  564    ReplaceWindow,
  565}
  566
  567#[derive(Clone)]
  568pub struct Toast {
  569    id: NotificationId,
  570    msg: Cow<'static, str>,
  571    autohide: bool,
  572    on_click: Option<(Cow<'static, str>, Arc<dyn Fn(&mut Window, &mut App)>)>,
  573}
  574
  575impl Toast {
  576    pub fn new<I: Into<Cow<'static, str>>>(id: NotificationId, msg: I) -> Self {
  577        Toast {
  578            id,
  579            msg: msg.into(),
  580            on_click: None,
  581            autohide: false,
  582        }
  583    }
  584
  585    pub fn on_click<F, M>(mut self, message: M, on_click: F) -> Self
  586    where
  587        M: Into<Cow<'static, str>>,
  588        F: Fn(&mut Window, &mut App) + 'static,
  589    {
  590        self.on_click = Some((message.into(), Arc::new(on_click)));
  591        self
  592    }
  593
  594    pub fn autohide(mut self) -> Self {
  595        self.autohide = true;
  596        self
  597    }
  598}
  599
  600impl PartialEq for Toast {
  601    fn eq(&self, other: &Self) -> bool {
  602        self.id == other.id
  603            && self.msg == other.msg
  604            && self.on_click.is_some() == other.on_click.is_some()
  605    }
  606}
  607
  608/// Opens a new terminal with the specified working directory.
  609#[derive(Debug, Default, Clone, Deserialize, PartialEq, JsonSchema, Action)]
  610#[action(namespace = workspace)]
  611#[serde(deny_unknown_fields)]
  612pub struct OpenTerminal {
  613    pub working_directory: PathBuf,
  614    /// If true, creates a local terminal even in remote projects.
  615    #[serde(default)]
  616    pub local: bool,
  617}
  618
  619#[derive(
  620    Clone,
  621    Copy,
  622    Debug,
  623    Default,
  624    Hash,
  625    PartialEq,
  626    Eq,
  627    PartialOrd,
  628    Ord,
  629    serde::Serialize,
  630    serde::Deserialize,
  631)]
  632pub struct WorkspaceId(i64);
  633
  634impl WorkspaceId {
  635    pub fn from_i64(value: i64) -> Self {
  636        Self(value)
  637    }
  638}
  639
  640impl StaticColumnCount for WorkspaceId {}
  641impl Bind for WorkspaceId {
  642    fn bind(&self, statement: &Statement, start_index: i32) -> Result<i32> {
  643        self.0.bind(statement, start_index)
  644    }
  645}
  646impl Column for WorkspaceId {
  647    fn column(statement: &mut Statement, start_index: i32) -> Result<(Self, i32)> {
  648        i64::column(statement, start_index)
  649            .map(|(i, next_index)| (Self(i), next_index))
  650            .with_context(|| format!("Failed to read WorkspaceId at index {start_index}"))
  651    }
  652}
  653impl From<WorkspaceId> for i64 {
  654    fn from(val: WorkspaceId) -> Self {
  655        val.0
  656    }
  657}
  658
  659fn prompt_and_open_paths(
  660    app_state: Arc<AppState>,
  661    options: PathPromptOptions,
  662    create_new_window: bool,
  663    cx: &mut App,
  664) {
  665    if let Some(workspace_window) = local_workspace_windows(cx).into_iter().next() {
  666        workspace_window
  667            .update(cx, |multi_workspace, window, cx| {
  668                let workspace = multi_workspace.workspace().clone();
  669                workspace.update(cx, |workspace, cx| {
  670                    prompt_for_open_path_and_open(
  671                        workspace,
  672                        app_state,
  673                        options,
  674                        create_new_window,
  675                        window,
  676                        cx,
  677                    );
  678                });
  679            })
  680            .ok();
  681    } else {
  682        let task = Workspace::new_local(
  683            Vec::new(),
  684            app_state.clone(),
  685            None,
  686            None,
  687            None,
  688            OpenMode::Activate,
  689            cx,
  690        );
  691        cx.spawn(async move |cx| {
  692            let OpenResult { window, .. } = task.await?;
  693            window.update(cx, |multi_workspace, window, cx| {
  694                window.activate_window();
  695                let workspace = multi_workspace.workspace().clone();
  696                workspace.update(cx, |workspace, cx| {
  697                    prompt_for_open_path_and_open(
  698                        workspace,
  699                        app_state,
  700                        options,
  701                        create_new_window,
  702                        window,
  703                        cx,
  704                    );
  705                });
  706            })?;
  707            anyhow::Ok(())
  708        })
  709        .detach_and_log_err(cx);
  710    }
  711}
  712
  713pub fn prompt_for_open_path_and_open(
  714    workspace: &mut Workspace,
  715    app_state: Arc<AppState>,
  716    options: PathPromptOptions,
  717    create_new_window: bool,
  718    window: &mut Window,
  719    cx: &mut Context<Workspace>,
  720) {
  721    let paths = workspace.prompt_for_open_path(
  722        options,
  723        DirectoryLister::Local(workspace.project().clone(), app_state.fs.clone()),
  724        window,
  725        cx,
  726    );
  727    let multi_workspace_handle = window.window_handle().downcast::<MultiWorkspace>();
  728    cx.spawn_in(window, async move |this, cx| {
  729        let Some(paths) = paths.await.log_err().flatten() else {
  730            return;
  731        };
  732        if !create_new_window {
  733            if let Some(handle) = multi_workspace_handle {
  734                if let Some(task) = handle
  735                    .update(cx, |multi_workspace, window, cx| {
  736                        multi_workspace.open_project(paths, OpenMode::Activate, window, cx)
  737                    })
  738                    .log_err()
  739                {
  740                    task.await.log_err();
  741                }
  742                return;
  743            }
  744        }
  745        if let Some(task) = this
  746            .update_in(cx, |this, window, cx| {
  747                this.open_workspace_for_paths(OpenMode::NewWindow, paths, window, cx)
  748            })
  749            .log_err()
  750        {
  751            task.await.log_err();
  752        }
  753    })
  754    .detach();
  755}
  756
  757pub fn init(app_state: Arc<AppState>, cx: &mut App) {
  758    component::init();
  759    theme_preview::init(cx);
  760    toast_layer::init(cx);
  761    history_manager::init(app_state.fs.clone(), cx);
  762
  763    cx.on_action(|_: &CloseWindow, cx| Workspace::close_global(cx))
  764        .on_action(|_: &Reload, cx| reload(cx))
  765        .on_action(|action: &Open, cx: &mut App| {
  766            let app_state = AppState::global(cx);
  767            prompt_and_open_paths(
  768                app_state,
  769                PathPromptOptions {
  770                    files: true,
  771                    directories: true,
  772                    multiple: true,
  773                    prompt: None,
  774                },
  775                action.create_new_window,
  776                cx,
  777            );
  778        })
  779        .on_action(|_: &OpenFiles, cx: &mut App| {
  780            let directories = cx.can_select_mixed_files_and_dirs();
  781            let app_state = AppState::global(cx);
  782            prompt_and_open_paths(
  783                app_state,
  784                PathPromptOptions {
  785                    files: true,
  786                    directories,
  787                    multiple: true,
  788                    prompt: None,
  789                },
  790                true,
  791                cx,
  792            );
  793        });
  794}
  795
  796type BuildProjectItemFn =
  797    fn(AnyEntity, Entity<Project>, Option<&Pane>, &mut Window, &mut App) -> Box<dyn ItemHandle>;
  798
  799type BuildProjectItemForPathFn =
  800    fn(
  801        &Entity<Project>,
  802        &ProjectPath,
  803        &mut Window,
  804        &mut App,
  805    ) -> Option<Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>>>;
  806
  807#[derive(Clone, Default)]
  808struct ProjectItemRegistry {
  809    build_project_item_fns_by_type: HashMap<TypeId, BuildProjectItemFn>,
  810    build_project_item_for_path_fns: Vec<BuildProjectItemForPathFn>,
  811}
  812
  813impl ProjectItemRegistry {
  814    fn register<T: ProjectItem>(&mut self) {
  815        self.build_project_item_fns_by_type.insert(
  816            TypeId::of::<T::Item>(),
  817            |item, project, pane, window, cx| {
  818                let item = item.downcast().unwrap();
  819                Box::new(cx.new(|cx| T::for_project_item(project, pane, item, window, cx)))
  820                    as Box<dyn ItemHandle>
  821            },
  822        );
  823        self.build_project_item_for_path_fns
  824            .push(|project, project_path, window, cx| {
  825                let project_path = project_path.clone();
  826                let is_file = project
  827                    .read(cx)
  828                    .entry_for_path(&project_path, cx)
  829                    .is_some_and(|entry| entry.is_file());
  830                let entry_abs_path = project.read(cx).absolute_path(&project_path, cx);
  831                let is_local = project.read(cx).is_local();
  832                let project_item =
  833                    <T::Item as project::ProjectItem>::try_open(project, &project_path, cx)?;
  834                let project = project.clone();
  835                Some(window.spawn(cx, async move |cx| {
  836                    match project_item.await.with_context(|| {
  837                        format!(
  838                            "opening project path {:?}",
  839                            entry_abs_path.as_deref().unwrap_or(&project_path.path.as_std_path())
  840                        )
  841                    }) {
  842                        Ok(project_item) => {
  843                            let project_item = project_item;
  844                            let project_entry_id: Option<ProjectEntryId> =
  845                                project_item.read_with(cx, project::ProjectItem::entry_id);
  846                            let build_workspace_item = Box::new(
  847                                |pane: &mut Pane, window: &mut Window, cx: &mut Context<Pane>| {
  848                                    Box::new(cx.new(|cx| {
  849                                        T::for_project_item(
  850                                            project,
  851                                            Some(pane),
  852                                            project_item,
  853                                            window,
  854                                            cx,
  855                                        )
  856                                    })) as Box<dyn ItemHandle>
  857                                },
  858                            ) as Box<_>;
  859                            Ok((project_entry_id, build_workspace_item))
  860                        }
  861                        Err(e) => {
  862                            log::warn!("Failed to open a project item: {e:#}");
  863                            if e.error_code() == ErrorCode::Internal {
  864                                if let Some(abs_path) =
  865                                    entry_abs_path.as_deref().filter(|_| is_file)
  866                                {
  867                                    if let Some(broken_project_item_view) =
  868                                        cx.update(|window, cx| {
  869                                            T::for_broken_project_item(
  870                                                abs_path, is_local, &e, window, cx,
  871                                            )
  872                                        })?
  873                                    {
  874                                        let build_workspace_item = Box::new(
  875                                            move |_: &mut Pane, _: &mut Window, cx: &mut Context<Pane>| {
  876                                                cx.new(|_| broken_project_item_view).boxed_clone()
  877                                            },
  878                                        )
  879                                        as Box<_>;
  880                                        return Ok((None, build_workspace_item));
  881                                    }
  882                                }
  883                            }
  884                            Err(e)
  885                        }
  886                    }
  887                }))
  888            });
  889    }
  890
  891    fn open_path(
  892        &self,
  893        project: &Entity<Project>,
  894        path: &ProjectPath,
  895        window: &mut Window,
  896        cx: &mut App,
  897    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
  898        let Some(open_project_item) = self
  899            .build_project_item_for_path_fns
  900            .iter()
  901            .rev()
  902            .find_map(|open_project_item| open_project_item(project, path, window, cx))
  903        else {
  904            return Task::ready(Err(anyhow!("cannot open file {:?}", path.path)));
  905        };
  906        open_project_item
  907    }
  908
  909    fn build_item<T: project::ProjectItem>(
  910        &self,
  911        item: Entity<T>,
  912        project: Entity<Project>,
  913        pane: Option<&Pane>,
  914        window: &mut Window,
  915        cx: &mut App,
  916    ) -> Option<Box<dyn ItemHandle>> {
  917        let build = self
  918            .build_project_item_fns_by_type
  919            .get(&TypeId::of::<T>())?;
  920        Some(build(item.into_any(), project, pane, window, cx))
  921    }
  922}
  923
  924type WorkspaceItemBuilder =
  925    Box<dyn FnOnce(&mut Pane, &mut Window, &mut Context<Pane>) -> Box<dyn ItemHandle>>;
  926
  927impl Global for ProjectItemRegistry {}
  928
  929/// Registers a [ProjectItem] for the app. When opening a file, all the registered
  930/// items will get a chance to open the file, starting from the project item that
  931/// was added last.
  932pub fn register_project_item<I: ProjectItem>(cx: &mut App) {
  933    cx.default_global::<ProjectItemRegistry>().register::<I>();
  934}
  935
  936#[derive(Default)]
  937pub struct FollowableViewRegistry(HashMap<TypeId, FollowableViewDescriptor>);
  938
  939struct FollowableViewDescriptor {
  940    from_state_proto: fn(
  941        Entity<Workspace>,
  942        ViewId,
  943        &mut Option<proto::view::Variant>,
  944        &mut Window,
  945        &mut App,
  946    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>>,
  947    to_followable_view: fn(&AnyView) -> Box<dyn FollowableItemHandle>,
  948}
  949
  950impl Global for FollowableViewRegistry {}
  951
  952impl FollowableViewRegistry {
  953    pub fn register<I: FollowableItem>(cx: &mut App) {
  954        cx.default_global::<Self>().0.insert(
  955            TypeId::of::<I>(),
  956            FollowableViewDescriptor {
  957                from_state_proto: |workspace, id, state, window, cx| {
  958                    I::from_state_proto(workspace, id, state, window, cx).map(|task| {
  959                        cx.foreground_executor()
  960                            .spawn(async move { Ok(Box::new(task.await?) as Box<_>) })
  961                    })
  962                },
  963                to_followable_view: |view| Box::new(view.clone().downcast::<I>().unwrap()),
  964            },
  965        );
  966    }
  967
  968    pub fn from_state_proto(
  969        workspace: Entity<Workspace>,
  970        view_id: ViewId,
  971        mut state: Option<proto::view::Variant>,
  972        window: &mut Window,
  973        cx: &mut App,
  974    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>> {
  975        cx.update_default_global(|this: &mut Self, cx| {
  976            this.0.values().find_map(|descriptor| {
  977                (descriptor.from_state_proto)(workspace.clone(), view_id, &mut state, window, cx)
  978            })
  979        })
  980    }
  981
  982    pub fn to_followable_view(
  983        view: impl Into<AnyView>,
  984        cx: &App,
  985    ) -> Option<Box<dyn FollowableItemHandle>> {
  986        let this = cx.try_global::<Self>()?;
  987        let view = view.into();
  988        let descriptor = this.0.get(&view.entity_type())?;
  989        Some((descriptor.to_followable_view)(&view))
  990    }
  991}
  992
  993#[derive(Copy, Clone)]
  994struct SerializableItemDescriptor {
  995    deserialize: fn(
  996        Entity<Project>,
  997        WeakEntity<Workspace>,
  998        WorkspaceId,
  999        ItemId,
 1000        &mut Window,
 1001        &mut Context<Pane>,
 1002    ) -> Task<Result<Box<dyn ItemHandle>>>,
 1003    cleanup: fn(WorkspaceId, Vec<ItemId>, &mut Window, &mut App) -> Task<Result<()>>,
 1004    view_to_serializable_item: fn(AnyView) -> Box<dyn SerializableItemHandle>,
 1005}
 1006
 1007#[derive(Default)]
 1008struct SerializableItemRegistry {
 1009    descriptors_by_kind: HashMap<Arc<str>, SerializableItemDescriptor>,
 1010    descriptors_by_type: HashMap<TypeId, SerializableItemDescriptor>,
 1011}
 1012
 1013impl Global for SerializableItemRegistry {}
 1014
 1015impl SerializableItemRegistry {
 1016    fn deserialize(
 1017        item_kind: &str,
 1018        project: Entity<Project>,
 1019        workspace: WeakEntity<Workspace>,
 1020        workspace_id: WorkspaceId,
 1021        item_item: ItemId,
 1022        window: &mut Window,
 1023        cx: &mut Context<Pane>,
 1024    ) -> Task<Result<Box<dyn ItemHandle>>> {
 1025        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
 1026            return Task::ready(Err(anyhow!(
 1027                "cannot deserialize {}, descriptor not found",
 1028                item_kind
 1029            )));
 1030        };
 1031
 1032        (descriptor.deserialize)(project, workspace, workspace_id, item_item, window, cx)
 1033    }
 1034
 1035    fn cleanup(
 1036        item_kind: &str,
 1037        workspace_id: WorkspaceId,
 1038        loaded_items: Vec<ItemId>,
 1039        window: &mut Window,
 1040        cx: &mut App,
 1041    ) -> Task<Result<()>> {
 1042        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
 1043            return Task::ready(Err(anyhow!(
 1044                "cannot cleanup {}, descriptor not found",
 1045                item_kind
 1046            )));
 1047        };
 1048
 1049        (descriptor.cleanup)(workspace_id, loaded_items, window, cx)
 1050    }
 1051
 1052    fn view_to_serializable_item_handle(
 1053        view: AnyView,
 1054        cx: &App,
 1055    ) -> Option<Box<dyn SerializableItemHandle>> {
 1056        let this = cx.try_global::<Self>()?;
 1057        let descriptor = this.descriptors_by_type.get(&view.entity_type())?;
 1058        Some((descriptor.view_to_serializable_item)(view))
 1059    }
 1060
 1061    fn descriptor(item_kind: &str, cx: &App) -> Option<SerializableItemDescriptor> {
 1062        let this = cx.try_global::<Self>()?;
 1063        this.descriptors_by_kind.get(item_kind).copied()
 1064    }
 1065}
 1066
 1067pub fn register_serializable_item<I: SerializableItem>(cx: &mut App) {
 1068    let serialized_item_kind = I::serialized_item_kind();
 1069
 1070    let registry = cx.default_global::<SerializableItemRegistry>();
 1071    let descriptor = SerializableItemDescriptor {
 1072        deserialize: |project, workspace, workspace_id, item_id, window, cx| {
 1073            let task = I::deserialize(project, workspace, workspace_id, item_id, window, cx);
 1074            cx.foreground_executor()
 1075                .spawn(async { Ok(Box::new(task.await?) as Box<_>) })
 1076        },
 1077        cleanup: |workspace_id, loaded_items, window, cx| {
 1078            I::cleanup(workspace_id, loaded_items, window, cx)
 1079        },
 1080        view_to_serializable_item: |view| Box::new(view.downcast::<I>().unwrap()),
 1081    };
 1082    registry
 1083        .descriptors_by_kind
 1084        .insert(Arc::from(serialized_item_kind), descriptor);
 1085    registry
 1086        .descriptors_by_type
 1087        .insert(TypeId::of::<I>(), descriptor);
 1088}
 1089
 1090pub struct AppState {
 1091    pub languages: Arc<LanguageRegistry>,
 1092    pub client: Arc<Client>,
 1093    pub user_store: Entity<UserStore>,
 1094    pub workspace_store: Entity<WorkspaceStore>,
 1095    pub fs: Arc<dyn fs::Fs>,
 1096    pub build_window_options: fn(Option<Uuid>, &mut App) -> WindowOptions,
 1097    pub node_runtime: NodeRuntime,
 1098    pub session: Entity<AppSession>,
 1099}
 1100
 1101struct GlobalAppState(Arc<AppState>);
 1102
 1103impl Global for GlobalAppState {}
 1104
 1105pub struct WorkspaceStore {
 1106    workspaces: HashSet<(gpui::AnyWindowHandle, WeakEntity<Workspace>)>,
 1107    client: Arc<Client>,
 1108    _subscriptions: Vec<client::Subscription>,
 1109}
 1110
 1111#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq, PartialOrd, Ord)]
 1112pub enum CollaboratorId {
 1113    PeerId(PeerId),
 1114    Agent,
 1115}
 1116
 1117impl From<PeerId> for CollaboratorId {
 1118    fn from(peer_id: PeerId) -> Self {
 1119        CollaboratorId::PeerId(peer_id)
 1120    }
 1121}
 1122
 1123impl From<&PeerId> for CollaboratorId {
 1124    fn from(peer_id: &PeerId) -> Self {
 1125        CollaboratorId::PeerId(*peer_id)
 1126    }
 1127}
 1128
 1129#[derive(PartialEq, Eq, PartialOrd, Ord, Debug)]
 1130struct Follower {
 1131    project_id: Option<u64>,
 1132    peer_id: PeerId,
 1133}
 1134
 1135impl AppState {
 1136    #[track_caller]
 1137    pub fn global(cx: &App) -> Arc<Self> {
 1138        cx.global::<GlobalAppState>().0.clone()
 1139    }
 1140    pub fn try_global(cx: &App) -> Option<Arc<Self>> {
 1141        cx.try_global::<GlobalAppState>()
 1142            .map(|state| state.0.clone())
 1143    }
 1144    pub fn set_global(state: Arc<AppState>, cx: &mut App) {
 1145        cx.set_global(GlobalAppState(state));
 1146    }
 1147
 1148    #[cfg(any(test, feature = "test-support"))]
 1149    pub fn test(cx: &mut App) -> Arc<Self> {
 1150        use fs::Fs;
 1151        use node_runtime::NodeRuntime;
 1152        use session::Session;
 1153        use settings::SettingsStore;
 1154
 1155        if !cx.has_global::<SettingsStore>() {
 1156            let settings_store = SettingsStore::test(cx);
 1157            cx.set_global(settings_store);
 1158        }
 1159
 1160        let fs = fs::FakeFs::new(cx.background_executor().clone());
 1161        <dyn Fs>::set_global(fs.clone(), cx);
 1162        let languages = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));
 1163        let clock = Arc::new(clock::FakeSystemClock::new());
 1164        let http_client = http_client::FakeHttpClient::with_404_response();
 1165        let client = Client::new(clock, http_client, cx);
 1166        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 1167        let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
 1168        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 1169
 1170        theme_settings::init(theme::LoadThemes::JustBase, cx);
 1171        client::init(&client, cx);
 1172
 1173        Arc::new(Self {
 1174            client,
 1175            fs,
 1176            languages,
 1177            user_store,
 1178            workspace_store,
 1179            node_runtime: NodeRuntime::unavailable(),
 1180            build_window_options: |_, _| Default::default(),
 1181            session,
 1182        })
 1183    }
 1184}
 1185
 1186struct DelayedDebouncedEditAction {
 1187    task: Option<Task<()>>,
 1188    cancel_channel: Option<oneshot::Sender<()>>,
 1189}
 1190
 1191impl DelayedDebouncedEditAction {
 1192    fn new() -> DelayedDebouncedEditAction {
 1193        DelayedDebouncedEditAction {
 1194            task: None,
 1195            cancel_channel: None,
 1196        }
 1197    }
 1198
 1199    fn fire_new<F>(
 1200        &mut self,
 1201        delay: Duration,
 1202        window: &mut Window,
 1203        cx: &mut Context<Workspace>,
 1204        func: F,
 1205    ) where
 1206        F: 'static
 1207            + Send
 1208            + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> Task<Result<()>>,
 1209    {
 1210        if let Some(channel) = self.cancel_channel.take() {
 1211            _ = channel.send(());
 1212        }
 1213
 1214        let (sender, mut receiver) = oneshot::channel::<()>();
 1215        self.cancel_channel = Some(sender);
 1216
 1217        let previous_task = self.task.take();
 1218        self.task = Some(cx.spawn_in(window, async move |workspace, cx| {
 1219            let mut timer = cx.background_executor().timer(delay).fuse();
 1220            if let Some(previous_task) = previous_task {
 1221                previous_task.await;
 1222            }
 1223
 1224            futures::select_biased! {
 1225                _ = receiver => return,
 1226                    _ = timer => {}
 1227            }
 1228
 1229            if let Some(result) = workspace
 1230                .update_in(cx, |workspace, window, cx| (func)(workspace, window, cx))
 1231                .log_err()
 1232            {
 1233                result.await.log_err();
 1234            }
 1235        }));
 1236    }
 1237}
 1238
 1239pub enum Event {
 1240    PaneAdded(Entity<Pane>),
 1241    PaneRemoved,
 1242    ItemAdded {
 1243        item: Box<dyn ItemHandle>,
 1244    },
 1245    ActiveItemChanged,
 1246    ItemRemoved {
 1247        item_id: EntityId,
 1248    },
 1249    UserSavedItem {
 1250        pane: WeakEntity<Pane>,
 1251        item: Box<dyn WeakItemHandle>,
 1252        save_intent: SaveIntent,
 1253    },
 1254    ContactRequestedJoin(u64),
 1255    WorkspaceCreated(WeakEntity<Workspace>),
 1256    OpenBundledFile {
 1257        text: Cow<'static, str>,
 1258        title: &'static str,
 1259        language: &'static str,
 1260    },
 1261    ZoomChanged,
 1262    ModalOpened,
 1263    Activate,
 1264    PanelAdded(AnyView),
 1265}
 1266
 1267#[derive(Debug, Clone)]
 1268pub enum OpenVisible {
 1269    All,
 1270    None,
 1271    OnlyFiles,
 1272    OnlyDirectories,
 1273}
 1274
 1275enum WorkspaceLocation {
 1276    // Valid local paths or SSH project to serialize
 1277    Location(SerializedWorkspaceLocation, PathList),
 1278    // No valid location found hence clear session id
 1279    DetachFromSession,
 1280    // No valid location found to serialize
 1281    None,
 1282}
 1283
 1284type PromptForNewPath = Box<
 1285    dyn Fn(
 1286        &mut Workspace,
 1287        DirectoryLister,
 1288        Option<String>,
 1289        &mut Window,
 1290        &mut Context<Workspace>,
 1291    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1292>;
 1293
 1294type PromptForOpenPath = Box<
 1295    dyn Fn(
 1296        &mut Workspace,
 1297        DirectoryLister,
 1298        &mut Window,
 1299        &mut Context<Workspace>,
 1300    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1301>;
 1302
 1303#[derive(Default)]
 1304struct DispatchingKeystrokes {
 1305    dispatched: HashSet<Vec<Keystroke>>,
 1306    queue: VecDeque<Keystroke>,
 1307    task: Option<Shared<Task<()>>>,
 1308}
 1309
 1310/// Collects everything project-related for a certain window opened.
 1311/// In some way, is a counterpart of a window, as the [`WindowHandle`] could be downcast into `Workspace`.
 1312///
 1313/// A `Workspace` usually consists of 1 or more projects, a central pane group, 3 docks and a status bar.
 1314/// The `Workspace` owns everybody's state and serves as a default, "global context",
 1315/// that can be used to register a global action to be triggered from any place in the window.
 1316pub struct Workspace {
 1317    weak_self: WeakEntity<Self>,
 1318    workspace_actions: Vec<Box<dyn Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div>>,
 1319    zoomed: Option<AnyWeakView>,
 1320    previous_dock_drag_coordinates: Option<Point<Pixels>>,
 1321    zoomed_position: Option<DockPosition>,
 1322    center: PaneGroup,
 1323    left_dock: Entity<Dock>,
 1324    bottom_dock: Entity<Dock>,
 1325    right_dock: Entity<Dock>,
 1326    panes: Vec<Entity<Pane>>,
 1327    active_worktree_override: Option<WorktreeId>,
 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            active_worktree_override: None,
 1761            notifications: Notifications::default(),
 1762            suppressed_notifications: HashSet::default(),
 1763            left_dock,
 1764            bottom_dock,
 1765            right_dock,
 1766            _panels_task: None,
 1767            project: project.clone(),
 1768            follower_states: Default::default(),
 1769            last_leaders_by_pane: Default::default(),
 1770            dispatching_keystrokes: Default::default(),
 1771            window_edited: false,
 1772            last_window_title: None,
 1773            dirty_items: Default::default(),
 1774            active_call,
 1775            database_id: workspace_id,
 1776            app_state,
 1777            _observe_current_user,
 1778            _apply_leader_updates,
 1779            _schedule_serialize_workspace: None,
 1780            _serialize_workspace_task: None,
 1781            _schedule_serialize_ssh_paths: None,
 1782            leader_updates_tx,
 1783            _subscriptions: subscriptions,
 1784            pane_history_timestamp,
 1785            workspace_actions: Default::default(),
 1786            // This data will be incorrect, but it will be overwritten by the time it needs to be used.
 1787            bounds: Default::default(),
 1788            centered_layout: false,
 1789            bounds_save_task_queued: None,
 1790            on_prompt_for_new_path: None,
 1791            on_prompt_for_open_path: None,
 1792            terminal_provider: None,
 1793            debugger_provider: None,
 1794            serializable_items_tx,
 1795            _items_serializer,
 1796            session_id: Some(session_id),
 1797
 1798            scheduled_tasks: Vec::new(),
 1799            last_open_dock_positions: Vec::new(),
 1800            removing: false,
 1801            sidebar_focus_handle: None,
 1802            multi_workspace,
 1803            open_in_dev_container: false,
 1804            _dev_container_task: None,
 1805        }
 1806    }
 1807
 1808    pub fn new_local(
 1809        abs_paths: Vec<PathBuf>,
 1810        app_state: Arc<AppState>,
 1811        requesting_window: Option<WindowHandle<MultiWorkspace>>,
 1812        env: Option<HashMap<String, String>>,
 1813        init: Option<Box<dyn FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send>>,
 1814        open_mode: OpenMode,
 1815        cx: &mut App,
 1816    ) -> Task<anyhow::Result<OpenResult>> {
 1817        let project_handle = Project::local(
 1818            app_state.client.clone(),
 1819            app_state.node_runtime.clone(),
 1820            app_state.user_store.clone(),
 1821            app_state.languages.clone(),
 1822            app_state.fs.clone(),
 1823            env,
 1824            Default::default(),
 1825            cx,
 1826        );
 1827
 1828        let db = WorkspaceDb::global(cx);
 1829        let kvp = db::kvp::KeyValueStore::global(cx);
 1830        cx.spawn(async move |cx| {
 1831            let mut paths_to_open = Vec::with_capacity(abs_paths.len());
 1832            for path in abs_paths.into_iter() {
 1833                if let Some(canonical) = app_state.fs.canonicalize(&path).await.ok() {
 1834                    paths_to_open.push(canonical)
 1835                } else {
 1836                    paths_to_open.push(path)
 1837                }
 1838            }
 1839
 1840            let serialized_workspace = db.workspace_for_roots(paths_to_open.as_slice());
 1841
 1842            if let Some(paths) = serialized_workspace.as_ref().map(|ws| &ws.paths) {
 1843                paths_to_open = paths.ordered_paths().cloned().collect();
 1844                if !paths.is_lexicographically_ordered() {
 1845                    project_handle.update(cx, |project, cx| {
 1846                        project.set_worktrees_reordered(true, cx);
 1847                    });
 1848                }
 1849            }
 1850
 1851            // Get project paths for all of the abs_paths
 1852            let mut project_paths: Vec<(PathBuf, Option<ProjectPath>)> =
 1853                Vec::with_capacity(paths_to_open.len());
 1854
 1855            for path in paths_to_open.into_iter() {
 1856                if let Some((_, project_entry)) = cx
 1857                    .update(|cx| {
 1858                        Workspace::project_path_for_path(project_handle.clone(), &path, true, cx)
 1859                    })
 1860                    .await
 1861                    .log_err()
 1862                {
 1863                    project_paths.push((path, Some(project_entry)));
 1864                } else {
 1865                    project_paths.push((path, None));
 1866                }
 1867            }
 1868
 1869            let workspace_id = if let Some(serialized_workspace) = serialized_workspace.as_ref() {
 1870                serialized_workspace.id
 1871            } else {
 1872                db.next_id().await.unwrap_or_else(|_| Default::default())
 1873            };
 1874
 1875            let toolchains = db.toolchains(workspace_id).await?;
 1876
 1877            for (toolchain, worktree_path, path) in toolchains {
 1878                let toolchain_path = PathBuf::from(toolchain.path.clone().to_string());
 1879                let Some(worktree_id) = project_handle.read_with(cx, |this, cx| {
 1880                    this.find_worktree(&worktree_path, cx)
 1881                        .and_then(|(worktree, rel_path)| {
 1882                            if rel_path.is_empty() {
 1883                                Some(worktree.read(cx).id())
 1884                            } else {
 1885                                None
 1886                            }
 1887                        })
 1888                }) else {
 1889                    // We did not find a worktree with a given path, but that's whatever.
 1890                    continue;
 1891                };
 1892                if !app_state.fs.is_file(toolchain_path.as_path()).await {
 1893                    continue;
 1894                }
 1895
 1896                project_handle
 1897                    .update(cx, |this, cx| {
 1898                        this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 1899                    })
 1900                    .await;
 1901            }
 1902            if let Some(workspace) = serialized_workspace.as_ref() {
 1903                project_handle.update(cx, |this, cx| {
 1904                    for (scope, toolchains) in &workspace.user_toolchains {
 1905                        for toolchain in toolchains {
 1906                            this.add_toolchain(toolchain.clone(), scope.clone(), cx);
 1907                        }
 1908                    }
 1909                });
 1910            }
 1911
 1912            let window_to_replace = match open_mode {
 1913                OpenMode::NewWindow => None,
 1914                _ => requesting_window,
 1915            };
 1916
 1917            let (window, workspace): (WindowHandle<MultiWorkspace>, Entity<Workspace>) =
 1918                if let Some(window) = window_to_replace {
 1919                    let centered_layout = serialized_workspace
 1920                        .as_ref()
 1921                        .map(|w| w.centered_layout)
 1922                        .unwrap_or(false);
 1923
 1924                    let workspace = window.update(cx, |multi_workspace, window, cx| {
 1925                        let workspace = cx.new(|cx| {
 1926                            let mut workspace = Workspace::new(
 1927                                Some(workspace_id),
 1928                                project_handle.clone(),
 1929                                app_state.clone(),
 1930                                window,
 1931                                cx,
 1932                            );
 1933
 1934                            workspace.centered_layout = centered_layout;
 1935
 1936                            // Call init callback to add items before window renders
 1937                            if let Some(init) = init {
 1938                                init(&mut workspace, window, cx);
 1939                            }
 1940
 1941                            workspace
 1942                        });
 1943                        match open_mode {
 1944                            OpenMode::Activate => {
 1945                                multi_workspace.activate(workspace.clone(), window, cx);
 1946                            }
 1947                            OpenMode::Add => {
 1948                                multi_workspace.add(workspace.clone(), &*window, cx);
 1949                            }
 1950                            OpenMode::NewWindow => {
 1951                                unreachable!()
 1952                            }
 1953                        }
 1954                        workspace
 1955                    })?;
 1956                    (window, workspace)
 1957                } else {
 1958                    let window_bounds_override = window_bounds_env_override();
 1959
 1960                    let (window_bounds, display) = if let Some(bounds) = window_bounds_override {
 1961                        (Some(WindowBounds::Windowed(bounds)), None)
 1962                    } else if let Some(workspace) = serialized_workspace.as_ref()
 1963                        && let Some(display) = workspace.display
 1964                        && let Some(bounds) = workspace.window_bounds.as_ref()
 1965                    {
 1966                        // Reopening an existing workspace - restore its saved bounds
 1967                        (Some(bounds.0), Some(display))
 1968                    } else if let Some((display, bounds)) =
 1969                        persistence::read_default_window_bounds(&kvp)
 1970                    {
 1971                        // New or empty workspace - use the last known window bounds
 1972                        (Some(bounds), Some(display))
 1973                    } else {
 1974                        // New window - let GPUI's default_bounds() handle cascading
 1975                        (None, None)
 1976                    };
 1977
 1978                    // Use the serialized workspace to construct the new window
 1979                    let mut options = cx.update(|cx| (app_state.build_window_options)(display, cx));
 1980                    options.window_bounds = window_bounds;
 1981                    let centered_layout = serialized_workspace
 1982                        .as_ref()
 1983                        .map(|w| w.centered_layout)
 1984                        .unwrap_or(false);
 1985                    let window = cx.open_window(options, {
 1986                        let app_state = app_state.clone();
 1987                        let project_handle = project_handle.clone();
 1988                        move |window, cx| {
 1989                            let workspace = cx.new(|cx| {
 1990                                let mut workspace = Workspace::new(
 1991                                    Some(workspace_id),
 1992                                    project_handle,
 1993                                    app_state,
 1994                                    window,
 1995                                    cx,
 1996                                );
 1997                                workspace.centered_layout = centered_layout;
 1998
 1999                                // Call init callback to add items before window renders
 2000                                if let Some(init) = init {
 2001                                    init(&mut workspace, window, cx);
 2002                                }
 2003
 2004                                workspace
 2005                            });
 2006                            cx.new(|cx| MultiWorkspace::new(workspace, window, cx))
 2007                        }
 2008                    })?;
 2009                    let workspace =
 2010                        window.update(cx, |multi_workspace: &mut MultiWorkspace, _, _cx| {
 2011                            multi_workspace.workspace().clone()
 2012                        })?;
 2013                    (window, workspace)
 2014                };
 2015
 2016            notify_if_database_failed(window, cx);
 2017            // Check if this is an empty workspace (no paths to open)
 2018            // An empty workspace is one where project_paths is empty
 2019            let is_empty_workspace = project_paths.is_empty();
 2020            // Check if serialized workspace has paths before it's moved
 2021            let serialized_workspace_has_paths = serialized_workspace
 2022                .as_ref()
 2023                .map(|ws| !ws.paths.is_empty())
 2024                .unwrap_or(false);
 2025
 2026            let opened_items = window
 2027                .update(cx, |_, window, cx| {
 2028                    workspace.update(cx, |_workspace: &mut Workspace, cx| {
 2029                        open_items(serialized_workspace, project_paths, window, cx)
 2030                    })
 2031                })?
 2032                .await
 2033                .unwrap_or_default();
 2034
 2035            // Restore default dock state for empty workspaces
 2036            // Only restore if:
 2037            // 1. This is an empty workspace (no paths), AND
 2038            // 2. The serialized workspace either doesn't exist or has no paths
 2039            if is_empty_workspace && !serialized_workspace_has_paths {
 2040                if let Some(default_docks) = persistence::read_default_dock_state(&kvp) {
 2041                    window
 2042                        .update(cx, |_, window, cx| {
 2043                            workspace.update(cx, |workspace, cx| {
 2044                                for (dock, serialized_dock) in [
 2045                                    (&workspace.right_dock, &default_docks.right),
 2046                                    (&workspace.left_dock, &default_docks.left),
 2047                                    (&workspace.bottom_dock, &default_docks.bottom),
 2048                                ] {
 2049                                    dock.update(cx, |dock, cx| {
 2050                                        dock.serialized_dock = Some(serialized_dock.clone());
 2051                                        dock.restore_state(window, cx);
 2052                                    });
 2053                                }
 2054                                cx.notify();
 2055                            });
 2056                        })
 2057                        .log_err();
 2058                }
 2059            }
 2060
 2061            window
 2062                .update(cx, |_, _window, cx| {
 2063                    workspace.update(cx, |this: &mut Workspace, cx| {
 2064                        this.update_history(cx);
 2065                    });
 2066                })
 2067                .log_err();
 2068            Ok(OpenResult {
 2069                window,
 2070                workspace,
 2071                opened_items,
 2072            })
 2073        })
 2074    }
 2075
 2076    pub fn project_group_key(&self, cx: &App) -> ProjectGroupKey {
 2077        self.project.read(cx).project_group_key(cx)
 2078    }
 2079
 2080    pub fn weak_handle(&self) -> WeakEntity<Self> {
 2081        self.weak_self.clone()
 2082    }
 2083
 2084    pub fn left_dock(&self) -> &Entity<Dock> {
 2085        &self.left_dock
 2086    }
 2087
 2088    pub fn bottom_dock(&self) -> &Entity<Dock> {
 2089        &self.bottom_dock
 2090    }
 2091
 2092    pub fn set_bottom_dock_layout(
 2093        &mut self,
 2094        layout: BottomDockLayout,
 2095        window: &mut Window,
 2096        cx: &mut Context<Self>,
 2097    ) {
 2098        let fs = self.project().read(cx).fs();
 2099        settings::update_settings_file(fs.clone(), cx, move |content, _cx| {
 2100            content.workspace.bottom_dock_layout = Some(layout);
 2101        });
 2102
 2103        cx.notify();
 2104        self.serialize_workspace(window, cx);
 2105    }
 2106
 2107    pub fn right_dock(&self) -> &Entity<Dock> {
 2108        &self.right_dock
 2109    }
 2110
 2111    pub fn all_docks(&self) -> [&Entity<Dock>; 3] {
 2112        [&self.left_dock, &self.bottom_dock, &self.right_dock]
 2113    }
 2114
 2115    pub fn capture_dock_state(&self, _window: &Window, cx: &App) -> DockStructure {
 2116        let left_dock = self.left_dock.read(cx);
 2117        let left_visible = left_dock.is_open();
 2118        let left_active_panel = left_dock
 2119            .active_panel()
 2120            .map(|panel| panel.persistent_name().to_string());
 2121        // `zoomed_position` is kept in sync with individual panel zoom state
 2122        // by the dock code in `Dock::new` and `Dock::add_panel`.
 2123        let left_dock_zoom = self.zoomed_position == Some(DockPosition::Left);
 2124
 2125        let right_dock = self.right_dock.read(cx);
 2126        let right_visible = right_dock.is_open();
 2127        let right_active_panel = right_dock
 2128            .active_panel()
 2129            .map(|panel| panel.persistent_name().to_string());
 2130        let right_dock_zoom = self.zoomed_position == Some(DockPosition::Right);
 2131
 2132        let bottom_dock = self.bottom_dock.read(cx);
 2133        let bottom_visible = bottom_dock.is_open();
 2134        let bottom_active_panel = bottom_dock
 2135            .active_panel()
 2136            .map(|panel| panel.persistent_name().to_string());
 2137        let bottom_dock_zoom = self.zoomed_position == Some(DockPosition::Bottom);
 2138
 2139        DockStructure {
 2140            left: DockData {
 2141                visible: left_visible,
 2142                active_panel: left_active_panel,
 2143                zoom: left_dock_zoom,
 2144            },
 2145            right: DockData {
 2146                visible: right_visible,
 2147                active_panel: right_active_panel,
 2148                zoom: right_dock_zoom,
 2149            },
 2150            bottom: DockData {
 2151                visible: bottom_visible,
 2152                active_panel: bottom_active_panel,
 2153                zoom: bottom_dock_zoom,
 2154            },
 2155        }
 2156    }
 2157
 2158    pub fn set_dock_structure(
 2159        &self,
 2160        docks: DockStructure,
 2161        window: &mut Window,
 2162        cx: &mut Context<Self>,
 2163    ) {
 2164        for (dock, data) in [
 2165            (&self.left_dock, docks.left),
 2166            (&self.bottom_dock, docks.bottom),
 2167            (&self.right_dock, docks.right),
 2168        ] {
 2169            dock.update(cx, |dock, cx| {
 2170                dock.serialized_dock = Some(data);
 2171                dock.restore_state(window, cx);
 2172            });
 2173        }
 2174    }
 2175
 2176    pub fn open_item_abs_paths(&self, cx: &App) -> Vec<PathBuf> {
 2177        self.items(cx)
 2178            .filter_map(|item| {
 2179                let project_path = item.project_path(cx)?;
 2180                self.project.read(cx).absolute_path(&project_path, cx)
 2181            })
 2182            .collect()
 2183    }
 2184
 2185    pub fn dock_at_position(&self, position: DockPosition) -> &Entity<Dock> {
 2186        match position {
 2187            DockPosition::Left => &self.left_dock,
 2188            DockPosition::Bottom => &self.bottom_dock,
 2189            DockPosition::Right => &self.right_dock,
 2190        }
 2191    }
 2192
 2193    pub fn agent_panel_position(&self, cx: &App) -> Option<DockPosition> {
 2194        self.all_docks().into_iter().find_map(|dock| {
 2195            let dock = dock.read(cx);
 2196            dock.has_agent_panel(cx).then_some(dock.position())
 2197        })
 2198    }
 2199
 2200    pub fn panel_size_state<T: Panel>(&self, cx: &App) -> Option<dock::PanelSizeState> {
 2201        self.all_docks().into_iter().find_map(|dock| {
 2202            let dock = dock.read(cx);
 2203            let panel = dock.panel::<T>()?;
 2204            dock.stored_panel_size_state(&panel)
 2205        })
 2206    }
 2207
 2208    pub fn persisted_panel_size_state(
 2209        &self,
 2210        panel_key: &'static str,
 2211        cx: &App,
 2212    ) -> Option<dock::PanelSizeState> {
 2213        dock::Dock::load_persisted_size_state(self, panel_key, cx)
 2214    }
 2215
 2216    pub fn persist_panel_size_state(
 2217        &self,
 2218        panel_key: &str,
 2219        size_state: dock::PanelSizeState,
 2220        cx: &mut App,
 2221    ) {
 2222        let Some(workspace_id) = self
 2223            .database_id()
 2224            .map(|id| i64::from(id).to_string())
 2225            .or(self.session_id())
 2226        else {
 2227            return;
 2228        };
 2229
 2230        let kvp = db::kvp::KeyValueStore::global(cx);
 2231        let panel_key = panel_key.to_string();
 2232        cx.background_spawn(async move {
 2233            let scope = kvp.scoped(dock::PANEL_SIZE_STATE_KEY);
 2234            scope
 2235                .write(
 2236                    format!("{workspace_id}:{panel_key}"),
 2237                    serde_json::to_string(&size_state)?,
 2238                )
 2239                .await
 2240        })
 2241        .detach_and_log_err(cx);
 2242    }
 2243
 2244    pub fn set_panel_size_state<T: Panel>(
 2245        &mut self,
 2246        size_state: dock::PanelSizeState,
 2247        window: &mut Window,
 2248        cx: &mut Context<Self>,
 2249    ) -> bool {
 2250        let Some(panel) = self.panel::<T>(cx) else {
 2251            return false;
 2252        };
 2253
 2254        let dock = self.dock_at_position(panel.position(window, cx));
 2255        let did_set = dock.update(cx, |dock, cx| {
 2256            dock.set_panel_size_state(&panel, size_state, cx)
 2257        });
 2258
 2259        if did_set {
 2260            self.persist_panel_size_state(T::panel_key(), size_state, cx);
 2261        }
 2262
 2263        did_set
 2264    }
 2265
 2266    pub fn toggle_dock_panel_flexible_size(
 2267        &self,
 2268        dock: &Entity<Dock>,
 2269        panel: &dyn PanelHandle,
 2270        window: &mut Window,
 2271        cx: &mut App,
 2272    ) {
 2273        let position = dock.read(cx).position();
 2274        let current_size = self.dock_size(&dock.read(cx), window, cx);
 2275        let current_flex =
 2276            current_size.and_then(|size| self.dock_flex_for_size(position, size, window, cx));
 2277        dock.update(cx, |dock, cx| {
 2278            dock.toggle_panel_flexible_size(panel, current_size, current_flex, window, cx);
 2279        });
 2280    }
 2281
 2282    fn dock_size(&self, dock: &Dock, window: &Window, cx: &App) -> Option<Pixels> {
 2283        let panel = dock.active_panel()?;
 2284        let size_state = dock
 2285            .stored_panel_size_state(panel.as_ref())
 2286            .unwrap_or_default();
 2287        let position = dock.position();
 2288
 2289        let use_flex = panel.has_flexible_size(window, cx);
 2290
 2291        if position.axis() == Axis::Horizontal
 2292            && use_flex
 2293            && let Some(flex) = size_state.flex.or_else(|| self.default_dock_flex(position))
 2294        {
 2295            let workspace_width = self.bounds.size.width;
 2296            if workspace_width <= Pixels::ZERO {
 2297                return None;
 2298            }
 2299            let flex = flex.max(0.001);
 2300            let opposite = self.opposite_dock_panel_and_size_state(position, window, cx);
 2301            if let Some(opposite_flex) = opposite.as_ref().and_then(|(_, s)| s.flex) {
 2302                // Both docks are flex items sharing the full workspace width.
 2303                let total_flex = flex + 1.0 + opposite_flex;
 2304                return Some((flex / total_flex * workspace_width).max(RESIZE_HANDLE_SIZE));
 2305            } else {
 2306                // Opposite dock is fixed-width; flex items share (W - fixed).
 2307                let opposite_fixed = opposite
 2308                    .map(|(panel, s)| s.size.unwrap_or_else(|| panel.default_size(window, cx)))
 2309                    .unwrap_or_default();
 2310                let available = (workspace_width - opposite_fixed).max(RESIZE_HANDLE_SIZE);
 2311                return Some((flex / (flex + 1.0) * available).max(RESIZE_HANDLE_SIZE));
 2312            }
 2313        }
 2314
 2315        Some(
 2316            size_state
 2317                .size
 2318                .unwrap_or_else(|| panel.default_size(window, cx)),
 2319        )
 2320    }
 2321
 2322    pub fn dock_flex_for_size(
 2323        &self,
 2324        position: DockPosition,
 2325        size: Pixels,
 2326        window: &Window,
 2327        cx: &App,
 2328    ) -> Option<f32> {
 2329        if position.axis() != Axis::Horizontal {
 2330            return None;
 2331        }
 2332
 2333        let workspace_width = self.bounds.size.width;
 2334        if workspace_width <= Pixels::ZERO {
 2335            return None;
 2336        }
 2337
 2338        let opposite = self.opposite_dock_panel_and_size_state(position, window, cx);
 2339        if let Some(opposite_flex) = opposite.as_ref().and_then(|(_, s)| s.flex) {
 2340            let size = size.clamp(px(0.), workspace_width - px(1.));
 2341            Some((size * (1.0 + opposite_flex) / (workspace_width - size)).max(0.0))
 2342        } else {
 2343            let opposite_width = opposite
 2344                .map(|(panel, s)| s.size.unwrap_or_else(|| panel.default_size(window, cx)))
 2345                .unwrap_or_default();
 2346            let available = (workspace_width - opposite_width).max(RESIZE_HANDLE_SIZE);
 2347            let remaining = (available - size).max(px(1.));
 2348            Some((size / remaining).max(0.0))
 2349        }
 2350    }
 2351
 2352    fn opposite_dock_panel_and_size_state(
 2353        &self,
 2354        position: DockPosition,
 2355        window: &Window,
 2356        cx: &App,
 2357    ) -> Option<(Arc<dyn PanelHandle>, PanelSizeState)> {
 2358        let opposite_position = match position {
 2359            DockPosition::Left => DockPosition::Right,
 2360            DockPosition::Right => DockPosition::Left,
 2361            DockPosition::Bottom => return None,
 2362        };
 2363
 2364        let opposite_dock = self.dock_at_position(opposite_position).read(cx);
 2365        let panel = opposite_dock.visible_panel()?;
 2366        let mut size_state = opposite_dock
 2367            .stored_panel_size_state(panel.as_ref())
 2368            .unwrap_or_default();
 2369        if size_state.flex.is_none() && panel.has_flexible_size(window, cx) {
 2370            size_state.flex = self.default_dock_flex(opposite_position);
 2371        }
 2372        Some((panel.clone(), size_state))
 2373    }
 2374
 2375    pub fn default_dock_flex(&self, position: DockPosition) -> Option<f32> {
 2376        if position.axis() != Axis::Horizontal {
 2377            return None;
 2378        }
 2379
 2380        let pane = self.last_active_center_pane.clone()?.upgrade()?;
 2381        Some(self.center.width_fraction_for_pane(&pane).unwrap_or(1.0))
 2382    }
 2383
 2384    pub fn is_edited(&self) -> bool {
 2385        self.window_edited
 2386    }
 2387
 2388    pub fn add_panel<T: Panel>(
 2389        &mut self,
 2390        panel: Entity<T>,
 2391        window: &mut Window,
 2392        cx: &mut Context<Self>,
 2393    ) {
 2394        let focus_handle = panel.panel_focus_handle(cx);
 2395        cx.on_focus_in(&focus_handle, window, Self::handle_panel_focused)
 2396            .detach();
 2397
 2398        let dock_position = panel.position(window, cx);
 2399        let dock = self.dock_at_position(dock_position);
 2400        let any_panel = panel.to_any();
 2401        let persisted_size_state =
 2402            self.persisted_panel_size_state(T::panel_key(), cx)
 2403                .or_else(|| {
 2404                    load_legacy_panel_size(T::panel_key(), dock_position, self, cx).map(|size| {
 2405                        let state = dock::PanelSizeState {
 2406                            size: Some(size),
 2407                            flex: None,
 2408                        };
 2409                        self.persist_panel_size_state(T::panel_key(), state, cx);
 2410                        state
 2411                    })
 2412                });
 2413
 2414        dock.update(cx, |dock, cx| {
 2415            let index = dock.add_panel(panel.clone(), self.weak_self.clone(), window, cx);
 2416            if let Some(size_state) = persisted_size_state {
 2417                dock.set_panel_size_state(&panel, size_state, cx);
 2418            }
 2419            index
 2420        });
 2421
 2422        cx.emit(Event::PanelAdded(any_panel));
 2423    }
 2424
 2425    pub fn remove_panel<T: Panel>(
 2426        &mut self,
 2427        panel: &Entity<T>,
 2428        window: &mut Window,
 2429        cx: &mut Context<Self>,
 2430    ) {
 2431        for dock in [&self.left_dock, &self.bottom_dock, &self.right_dock] {
 2432            dock.update(cx, |dock, cx| dock.remove_panel(panel, window, cx));
 2433        }
 2434    }
 2435
 2436    pub fn status_bar(&self) -> &Entity<StatusBar> {
 2437        &self.status_bar
 2438    }
 2439
 2440    pub fn set_sidebar_focus_handle(&mut self, handle: Option<FocusHandle>) {
 2441        self.sidebar_focus_handle = handle;
 2442    }
 2443
 2444    pub fn status_bar_visible(&self, cx: &App) -> bool {
 2445        StatusBarSettings::get_global(cx).show
 2446    }
 2447
 2448    pub fn multi_workspace(&self) -> Option<&WeakEntity<MultiWorkspace>> {
 2449        self.multi_workspace.as_ref()
 2450    }
 2451
 2452    pub fn set_multi_workspace(
 2453        &mut self,
 2454        multi_workspace: WeakEntity<MultiWorkspace>,
 2455        cx: &mut App,
 2456    ) {
 2457        self.status_bar.update(cx, |status_bar, cx| {
 2458            status_bar.set_multi_workspace(multi_workspace.clone(), cx);
 2459        });
 2460        self.multi_workspace = Some(multi_workspace);
 2461    }
 2462
 2463    pub fn app_state(&self) -> &Arc<AppState> {
 2464        &self.app_state
 2465    }
 2466
 2467    pub fn set_panels_task(&mut self, task: Task<Result<()>>) {
 2468        self._panels_task = Some(task);
 2469    }
 2470
 2471    pub fn take_panels_task(&mut self) -> Option<Task<Result<()>>> {
 2472        self._panels_task.take()
 2473    }
 2474
 2475    pub fn user_store(&self) -> &Entity<UserStore> {
 2476        &self.app_state.user_store
 2477    }
 2478
 2479    pub fn project(&self) -> &Entity<Project> {
 2480        &self.project
 2481    }
 2482
 2483    pub fn path_style(&self, cx: &App) -> PathStyle {
 2484        self.project.read(cx).path_style(cx)
 2485    }
 2486
 2487    pub fn recently_activated_items(&self, cx: &App) -> HashMap<EntityId, usize> {
 2488        let mut history: HashMap<EntityId, usize> = HashMap::default();
 2489
 2490        for pane_handle in &self.panes {
 2491            let pane = pane_handle.read(cx);
 2492
 2493            for entry in pane.activation_history() {
 2494                history.insert(
 2495                    entry.entity_id,
 2496                    history
 2497                        .get(&entry.entity_id)
 2498                        .cloned()
 2499                        .unwrap_or(0)
 2500                        .max(entry.timestamp),
 2501                );
 2502            }
 2503        }
 2504
 2505        history
 2506    }
 2507
 2508    pub fn recent_active_item_by_type<T: 'static>(&self, cx: &App) -> Option<Entity<T>> {
 2509        let mut recent_item: Option<Entity<T>> = None;
 2510        let mut recent_timestamp = 0;
 2511        for pane_handle in &self.panes {
 2512            let pane = pane_handle.read(cx);
 2513            let item_map: HashMap<EntityId, &Box<dyn ItemHandle>> =
 2514                pane.items().map(|item| (item.item_id(), item)).collect();
 2515            for entry in pane.activation_history() {
 2516                if entry.timestamp > recent_timestamp
 2517                    && let Some(&item) = item_map.get(&entry.entity_id)
 2518                    && let Some(typed_item) = item.act_as::<T>(cx)
 2519                {
 2520                    recent_timestamp = entry.timestamp;
 2521                    recent_item = Some(typed_item);
 2522                }
 2523            }
 2524        }
 2525        recent_item
 2526    }
 2527
 2528    pub fn recent_navigation_history_iter(
 2529        &self,
 2530        cx: &App,
 2531    ) -> impl Iterator<Item = (ProjectPath, Option<PathBuf>)> + use<> {
 2532        let mut abs_paths_opened: HashMap<PathBuf, HashSet<ProjectPath>> = HashMap::default();
 2533        let mut history: HashMap<ProjectPath, (Option<PathBuf>, usize)> = HashMap::default();
 2534
 2535        for pane in &self.panes {
 2536            let pane = pane.read(cx);
 2537
 2538            pane.nav_history()
 2539                .for_each_entry(cx, &mut |entry, (project_path, fs_path)| {
 2540                    if let Some(fs_path) = &fs_path {
 2541                        abs_paths_opened
 2542                            .entry(fs_path.clone())
 2543                            .or_default()
 2544                            .insert(project_path.clone());
 2545                    }
 2546                    let timestamp = entry.timestamp;
 2547                    match history.entry(project_path) {
 2548                        hash_map::Entry::Occupied(mut entry) => {
 2549                            let (_, old_timestamp) = entry.get();
 2550                            if &timestamp > old_timestamp {
 2551                                entry.insert((fs_path, timestamp));
 2552                            }
 2553                        }
 2554                        hash_map::Entry::Vacant(entry) => {
 2555                            entry.insert((fs_path, timestamp));
 2556                        }
 2557                    }
 2558                });
 2559
 2560            if let Some(item) = pane.active_item()
 2561                && let Some(project_path) = item.project_path(cx)
 2562            {
 2563                let fs_path = self.project.read(cx).absolute_path(&project_path, cx);
 2564
 2565                if let Some(fs_path) = &fs_path {
 2566                    abs_paths_opened
 2567                        .entry(fs_path.clone())
 2568                        .or_default()
 2569                        .insert(project_path.clone());
 2570                }
 2571
 2572                history.insert(project_path, (fs_path, std::usize::MAX));
 2573            }
 2574        }
 2575
 2576        history
 2577            .into_iter()
 2578            .sorted_by_key(|(_, (_, order))| *order)
 2579            .map(|(project_path, (fs_path, _))| (project_path, fs_path))
 2580            .rev()
 2581            .filter(move |(history_path, abs_path)| {
 2582                let latest_project_path_opened = abs_path
 2583                    .as_ref()
 2584                    .and_then(|abs_path| abs_paths_opened.get(abs_path))
 2585                    .and_then(|project_paths| {
 2586                        project_paths
 2587                            .iter()
 2588                            .max_by(|b1, b2| b1.worktree_id.cmp(&b2.worktree_id))
 2589                    });
 2590
 2591                latest_project_path_opened.is_none_or(|path| path == history_path)
 2592            })
 2593    }
 2594
 2595    pub fn recent_navigation_history(
 2596        &self,
 2597        limit: Option<usize>,
 2598        cx: &App,
 2599    ) -> Vec<(ProjectPath, Option<PathBuf>)> {
 2600        self.recent_navigation_history_iter(cx)
 2601            .take(limit.unwrap_or(usize::MAX))
 2602            .collect()
 2603    }
 2604
 2605    pub fn clear_navigation_history(&mut self, _window: &mut Window, cx: &mut Context<Workspace>) {
 2606        for pane in &self.panes {
 2607            pane.update(cx, |pane, cx| pane.nav_history_mut().clear(cx));
 2608        }
 2609    }
 2610
 2611    fn navigate_history(
 2612        &mut self,
 2613        pane: WeakEntity<Pane>,
 2614        mode: NavigationMode,
 2615        window: &mut Window,
 2616        cx: &mut Context<Workspace>,
 2617    ) -> Task<Result<()>> {
 2618        self.navigate_history_impl(
 2619            pane,
 2620            mode,
 2621            window,
 2622            &mut |history, cx| history.pop(mode, cx),
 2623            cx,
 2624        )
 2625    }
 2626
 2627    fn navigate_tag_history(
 2628        &mut self,
 2629        pane: WeakEntity<Pane>,
 2630        mode: TagNavigationMode,
 2631        window: &mut Window,
 2632        cx: &mut Context<Workspace>,
 2633    ) -> Task<Result<()>> {
 2634        self.navigate_history_impl(
 2635            pane,
 2636            NavigationMode::Normal,
 2637            window,
 2638            &mut |history, _cx| history.pop_tag(mode),
 2639            cx,
 2640        )
 2641    }
 2642
 2643    fn navigate_history_impl(
 2644        &mut self,
 2645        pane: WeakEntity<Pane>,
 2646        mode: NavigationMode,
 2647        window: &mut Window,
 2648        cb: &mut dyn FnMut(&mut NavHistory, &mut App) -> Option<NavigationEntry>,
 2649        cx: &mut Context<Workspace>,
 2650    ) -> Task<Result<()>> {
 2651        let to_load = if let Some(pane) = pane.upgrade() {
 2652            pane.update(cx, |pane, cx| {
 2653                window.focus(&pane.focus_handle(cx), cx);
 2654                loop {
 2655                    // Retrieve the weak item handle from the history.
 2656                    let entry = cb(pane.nav_history_mut(), cx)?;
 2657
 2658                    // If the item is still present in this pane, then activate it.
 2659                    if let Some(index) = entry
 2660                        .item
 2661                        .upgrade()
 2662                        .and_then(|v| pane.index_for_item(v.as_ref()))
 2663                    {
 2664                        let prev_active_item_index = pane.active_item_index();
 2665                        pane.nav_history_mut().set_mode(mode);
 2666                        pane.activate_item(index, true, true, window, cx);
 2667                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 2668
 2669                        let mut navigated = prev_active_item_index != pane.active_item_index();
 2670                        if let Some(data) = entry.data {
 2671                            navigated |= pane.active_item()?.navigate(data, window, cx);
 2672                        }
 2673
 2674                        if navigated {
 2675                            break None;
 2676                        }
 2677                    } else {
 2678                        // If the item is no longer present in this pane, then retrieve its
 2679                        // path info in order to reopen it.
 2680                        break pane
 2681                            .nav_history()
 2682                            .path_for_item(entry.item.id())
 2683                            .map(|(project_path, abs_path)| (project_path, abs_path, entry));
 2684                    }
 2685                }
 2686            })
 2687        } else {
 2688            None
 2689        };
 2690
 2691        if let Some((project_path, abs_path, entry)) = to_load {
 2692            // If the item was no longer present, then load it again from its previous path, first try the local path
 2693            let open_by_project_path = self.load_path(project_path.clone(), window, cx);
 2694
 2695            cx.spawn_in(window, async move  |workspace, cx| {
 2696                let open_by_project_path = open_by_project_path.await;
 2697                let mut navigated = false;
 2698                match open_by_project_path
 2699                    .with_context(|| format!("Navigating to {project_path:?}"))
 2700                {
 2701                    Ok((project_entry_id, build_item)) => {
 2702                        let prev_active_item_id = pane.update(cx, |pane, _| {
 2703                            pane.nav_history_mut().set_mode(mode);
 2704                            pane.active_item().map(|p| p.item_id())
 2705                        })?;
 2706
 2707                        pane.update_in(cx, |pane, window, cx| {
 2708                            let item = pane.open_item(
 2709                                project_entry_id,
 2710                                project_path,
 2711                                true,
 2712                                entry.is_preview,
 2713                                true,
 2714                                None,
 2715                                window, cx,
 2716                                build_item,
 2717                            );
 2718                            navigated |= Some(item.item_id()) != prev_active_item_id;
 2719                            pane.nav_history_mut().set_mode(NavigationMode::Normal);
 2720                            if let Some(data) = entry.data {
 2721                                navigated |= item.navigate(data, window, cx);
 2722                            }
 2723                        })?;
 2724                    }
 2725                    Err(open_by_project_path_e) => {
 2726                        // Fall back to opening by abs path, in case an external file was opened and closed,
 2727                        // and its worktree is now dropped
 2728                        if let Some(abs_path) = abs_path {
 2729                            let prev_active_item_id = pane.update(cx, |pane, _| {
 2730                                pane.nav_history_mut().set_mode(mode);
 2731                                pane.active_item().map(|p| p.item_id())
 2732                            })?;
 2733                            let open_by_abs_path = workspace.update_in(cx, |workspace, window, cx| {
 2734                                workspace.open_abs_path(abs_path.clone(), OpenOptions { visible: Some(OpenVisible::None), ..Default::default() }, window, cx)
 2735                            })?;
 2736                            match open_by_abs_path
 2737                                .await
 2738                                .with_context(|| format!("Navigating to {abs_path:?}"))
 2739                            {
 2740                                Ok(item) => {
 2741                                    pane.update_in(cx, |pane, window, cx| {
 2742                                        navigated |= Some(item.item_id()) != prev_active_item_id;
 2743                                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 2744                                        if let Some(data) = entry.data {
 2745                                            navigated |= item.navigate(data, window, cx);
 2746                                        }
 2747                                    })?;
 2748                                }
 2749                                Err(open_by_abs_path_e) => {
 2750                                    log::error!("Failed to navigate history: {open_by_project_path_e:#} and {open_by_abs_path_e:#}");
 2751                                }
 2752                            }
 2753                        }
 2754                    }
 2755                }
 2756
 2757                if !navigated {
 2758                    workspace
 2759                        .update_in(cx, |workspace, window, cx| {
 2760                            Self::navigate_history(workspace, pane, mode, window, cx)
 2761                        })?
 2762                        .await?;
 2763                }
 2764
 2765                Ok(())
 2766            })
 2767        } else {
 2768            Task::ready(Ok(()))
 2769        }
 2770    }
 2771
 2772    pub fn go_back(
 2773        &mut self,
 2774        pane: WeakEntity<Pane>,
 2775        window: &mut Window,
 2776        cx: &mut Context<Workspace>,
 2777    ) -> Task<Result<()>> {
 2778        self.navigate_history(pane, NavigationMode::GoingBack, window, cx)
 2779    }
 2780
 2781    pub fn go_forward(
 2782        &mut self,
 2783        pane: WeakEntity<Pane>,
 2784        window: &mut Window,
 2785        cx: &mut Context<Workspace>,
 2786    ) -> Task<Result<()>> {
 2787        self.navigate_history(pane, NavigationMode::GoingForward, window, cx)
 2788    }
 2789
 2790    pub fn reopen_closed_item(
 2791        &mut self,
 2792        window: &mut Window,
 2793        cx: &mut Context<Workspace>,
 2794    ) -> Task<Result<()>> {
 2795        self.navigate_history(
 2796            self.active_pane().downgrade(),
 2797            NavigationMode::ReopeningClosedItem,
 2798            window,
 2799            cx,
 2800        )
 2801    }
 2802
 2803    pub fn client(&self) -> &Arc<Client> {
 2804        &self.app_state.client
 2805    }
 2806
 2807    pub fn set_titlebar_item(&mut self, item: AnyView, _: &mut Window, cx: &mut Context<Self>) {
 2808        self.titlebar_item = Some(item);
 2809        cx.notify();
 2810    }
 2811
 2812    pub fn set_prompt_for_new_path(&mut self, prompt: PromptForNewPath) {
 2813        self.on_prompt_for_new_path = Some(prompt)
 2814    }
 2815
 2816    pub fn set_prompt_for_open_path(&mut self, prompt: PromptForOpenPath) {
 2817        self.on_prompt_for_open_path = Some(prompt)
 2818    }
 2819
 2820    pub fn set_terminal_provider(&mut self, provider: impl TerminalProvider + 'static) {
 2821        self.terminal_provider = Some(Box::new(provider));
 2822    }
 2823
 2824    pub fn set_debugger_provider(&mut self, provider: impl DebuggerProvider + 'static) {
 2825        self.debugger_provider = Some(Arc::new(provider));
 2826    }
 2827
 2828    pub fn set_open_in_dev_container(&mut self, value: bool) {
 2829        self.open_in_dev_container = value;
 2830    }
 2831
 2832    pub fn open_in_dev_container(&self) -> bool {
 2833        self.open_in_dev_container
 2834    }
 2835
 2836    pub fn set_dev_container_task(&mut self, task: Task<Result<()>>) {
 2837        self._dev_container_task = Some(task);
 2838    }
 2839
 2840    pub fn debugger_provider(&self) -> Option<Arc<dyn DebuggerProvider>> {
 2841        self.debugger_provider.clone()
 2842    }
 2843
 2844    pub fn prompt_for_open_path(
 2845        &mut self,
 2846        path_prompt_options: PathPromptOptions,
 2847        lister: DirectoryLister,
 2848        window: &mut Window,
 2849        cx: &mut Context<Self>,
 2850    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2851        if !lister.is_local(cx) || !WorkspaceSettings::get_global(cx).use_system_path_prompts {
 2852            let prompt = self.on_prompt_for_open_path.take().unwrap();
 2853            let rx = prompt(self, lister, window, cx);
 2854            self.on_prompt_for_open_path = Some(prompt);
 2855            rx
 2856        } else {
 2857            let (tx, rx) = oneshot::channel();
 2858            let abs_path = cx.prompt_for_paths(path_prompt_options);
 2859
 2860            cx.spawn_in(window, async move |workspace, cx| {
 2861                let Ok(result) = abs_path.await else {
 2862                    return Ok(());
 2863                };
 2864
 2865                match result {
 2866                    Ok(result) => {
 2867                        tx.send(result).ok();
 2868                    }
 2869                    Err(err) => {
 2870                        let rx = workspace.update_in(cx, |workspace, window, cx| {
 2871                            workspace.show_portal_error(err.to_string(), cx);
 2872                            let prompt = workspace.on_prompt_for_open_path.take().unwrap();
 2873                            let rx = prompt(workspace, lister, window, cx);
 2874                            workspace.on_prompt_for_open_path = Some(prompt);
 2875                            rx
 2876                        })?;
 2877                        if let Ok(path) = rx.await {
 2878                            tx.send(path).ok();
 2879                        }
 2880                    }
 2881                };
 2882                anyhow::Ok(())
 2883            })
 2884            .detach();
 2885
 2886            rx
 2887        }
 2888    }
 2889
 2890    pub fn prompt_for_new_path(
 2891        &mut self,
 2892        lister: DirectoryLister,
 2893        suggested_name: Option<String>,
 2894        window: &mut Window,
 2895        cx: &mut Context<Self>,
 2896    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2897        if self.project.read(cx).is_via_collab()
 2898            || self.project.read(cx).is_via_remote_server()
 2899            || !WorkspaceSettings::get_global(cx).use_system_path_prompts
 2900        {
 2901            let prompt = self.on_prompt_for_new_path.take().unwrap();
 2902            let rx = prompt(self, lister, suggested_name, window, cx);
 2903            self.on_prompt_for_new_path = Some(prompt);
 2904            return rx;
 2905        }
 2906
 2907        let (tx, rx) = oneshot::channel();
 2908        cx.spawn_in(window, async move |workspace, cx| {
 2909            let abs_path = workspace.update(cx, |workspace, cx| {
 2910                let relative_to = workspace
 2911                    .most_recent_active_path(cx)
 2912                    .and_then(|p| p.parent().map(|p| p.to_path_buf()))
 2913                    .or_else(|| {
 2914                        let project = workspace.project.read(cx);
 2915                        project.visible_worktrees(cx).find_map(|worktree| {
 2916                            Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
 2917                        })
 2918                    })
 2919                    .or_else(std::env::home_dir)
 2920                    .unwrap_or_else(|| PathBuf::from(""));
 2921                cx.prompt_for_new_path(&relative_to, suggested_name.as_deref())
 2922            })?;
 2923            let abs_path = match abs_path.await? {
 2924                Ok(path) => path,
 2925                Err(err) => {
 2926                    let rx = workspace.update_in(cx, |workspace, window, cx| {
 2927                        workspace.show_portal_error(err.to_string(), cx);
 2928
 2929                        let prompt = workspace.on_prompt_for_new_path.take().unwrap();
 2930                        let rx = prompt(workspace, lister, suggested_name, window, cx);
 2931                        workspace.on_prompt_for_new_path = Some(prompt);
 2932                        rx
 2933                    })?;
 2934                    if let Ok(path) = rx.await {
 2935                        tx.send(path).ok();
 2936                    }
 2937                    return anyhow::Ok(());
 2938                }
 2939            };
 2940
 2941            tx.send(abs_path.map(|path| vec![path])).ok();
 2942            anyhow::Ok(())
 2943        })
 2944        .detach();
 2945
 2946        rx
 2947    }
 2948
 2949    pub fn titlebar_item(&self) -> Option<AnyView> {
 2950        self.titlebar_item.clone()
 2951    }
 2952
 2953    /// Returns the worktree override set by the user (e.g., via the project dropdown).
 2954    /// When set, git-related operations should use this worktree instead of deriving
 2955    /// the active worktree from the focused file.
 2956    pub fn active_worktree_override(&self) -> Option<WorktreeId> {
 2957        self.active_worktree_override
 2958    }
 2959
 2960    pub fn set_active_worktree_override(
 2961        &mut self,
 2962        worktree_id: Option<WorktreeId>,
 2963        cx: &mut Context<Self>,
 2964    ) {
 2965        self.active_worktree_override = worktree_id;
 2966        cx.notify();
 2967    }
 2968
 2969    pub fn clear_active_worktree_override(&mut self, cx: &mut Context<Self>) {
 2970        self.active_worktree_override = None;
 2971        cx.notify();
 2972    }
 2973
 2974    /// Call the given callback with a workspace whose project is local or remote via WSL (allowing host access).
 2975    ///
 2976    /// If the given workspace has a local project, then it will be passed
 2977    /// to the callback. Otherwise, a new empty window will be created.
 2978    pub fn with_local_workspace<T, F>(
 2979        &mut self,
 2980        window: &mut Window,
 2981        cx: &mut Context<Self>,
 2982        callback: F,
 2983    ) -> Task<Result<T>>
 2984    where
 2985        T: 'static,
 2986        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
 2987    {
 2988        if self.project.read(cx).is_local() {
 2989            Task::ready(Ok(callback(self, window, cx)))
 2990        } else {
 2991            let env = self.project.read(cx).cli_environment(cx);
 2992            let task = Self::new_local(
 2993                Vec::new(),
 2994                self.app_state.clone(),
 2995                None,
 2996                env,
 2997                None,
 2998                OpenMode::Activate,
 2999                cx,
 3000            );
 3001            cx.spawn_in(window, async move |_vh, cx| {
 3002                let OpenResult {
 3003                    window: multi_workspace_window,
 3004                    ..
 3005                } = task.await?;
 3006                multi_workspace_window.update(cx, |multi_workspace, window, cx| {
 3007                    let workspace = multi_workspace.workspace().clone();
 3008                    workspace.update(cx, |workspace, cx| callback(workspace, window, cx))
 3009                })
 3010            })
 3011        }
 3012    }
 3013
 3014    /// Call the given callback with a workspace whose project is local or remote via WSL (allowing host access).
 3015    ///
 3016    /// If the given workspace has a local project, then it will be passed
 3017    /// to the callback. Otherwise, a new empty window will be created.
 3018    pub fn with_local_or_wsl_workspace<T, F>(
 3019        &mut self,
 3020        window: &mut Window,
 3021        cx: &mut Context<Self>,
 3022        callback: F,
 3023    ) -> Task<Result<T>>
 3024    where
 3025        T: 'static,
 3026        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
 3027    {
 3028        let project = self.project.read(cx);
 3029        if project.is_local() || project.is_via_wsl_with_host_interop(cx) {
 3030            Task::ready(Ok(callback(self, window, cx)))
 3031        } else {
 3032            let env = self.project.read(cx).cli_environment(cx);
 3033            let task = Self::new_local(
 3034                Vec::new(),
 3035                self.app_state.clone(),
 3036                None,
 3037                env,
 3038                None,
 3039                OpenMode::Activate,
 3040                cx,
 3041            );
 3042            cx.spawn_in(window, async move |_vh, cx| {
 3043                let OpenResult {
 3044                    window: multi_workspace_window,
 3045                    ..
 3046                } = task.await?;
 3047                multi_workspace_window.update(cx, |multi_workspace, window, cx| {
 3048                    let workspace = multi_workspace.workspace().clone();
 3049                    workspace.update(cx, |workspace, cx| callback(workspace, window, cx))
 3050                })
 3051            })
 3052        }
 3053    }
 3054
 3055    pub fn worktrees<'a>(&self, cx: &'a App) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 3056        self.project.read(cx).worktrees(cx)
 3057    }
 3058
 3059    pub fn visible_worktrees<'a>(
 3060        &self,
 3061        cx: &'a App,
 3062    ) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 3063        self.project.read(cx).visible_worktrees(cx)
 3064    }
 3065
 3066    pub fn worktree_scans_complete(&self, cx: &App) -> impl Future<Output = ()> + 'static + use<> {
 3067        let futures = self
 3068            .worktrees(cx)
 3069            .filter_map(|worktree| worktree.read(cx).as_local())
 3070            .map(|worktree| worktree.scan_complete())
 3071            .collect::<Vec<_>>();
 3072        async move {
 3073            for future in futures {
 3074                future.await;
 3075            }
 3076        }
 3077    }
 3078
 3079    pub fn close_global(cx: &mut App) {
 3080        cx.defer(|cx| {
 3081            cx.windows().iter().find(|window| {
 3082                window
 3083                    .update(cx, |_, window, _| {
 3084                        if window.is_window_active() {
 3085                            //This can only get called when the window's project connection has been lost
 3086                            //so we don't need to prompt the user for anything and instead just close the window
 3087                            window.remove_window();
 3088                            true
 3089                        } else {
 3090                            false
 3091                        }
 3092                    })
 3093                    .unwrap_or(false)
 3094            });
 3095        });
 3096    }
 3097
 3098    pub fn move_focused_panel_to_next_position(
 3099        &mut self,
 3100        _: &MoveFocusedPanelToNextPosition,
 3101        window: &mut Window,
 3102        cx: &mut Context<Self>,
 3103    ) {
 3104        let docks = self.all_docks();
 3105        let active_dock = docks
 3106            .into_iter()
 3107            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 3108
 3109        if let Some(dock) = active_dock {
 3110            dock.update(cx, |dock, cx| {
 3111                let active_panel = dock
 3112                    .active_panel()
 3113                    .filter(|panel| panel.panel_focus_handle(cx).contains_focused(window, cx));
 3114
 3115                if let Some(panel) = active_panel {
 3116                    panel.move_to_next_position(window, cx);
 3117                }
 3118            })
 3119        }
 3120    }
 3121
 3122    pub fn prepare_to_close(
 3123        &mut self,
 3124        close_intent: CloseIntent,
 3125        window: &mut Window,
 3126        cx: &mut Context<Self>,
 3127    ) -> Task<Result<bool>> {
 3128        let active_call = self.active_global_call();
 3129
 3130        cx.spawn_in(window, async move |this, cx| {
 3131            this.update(cx, |this, _| {
 3132                if close_intent == CloseIntent::CloseWindow {
 3133                    this.removing = true;
 3134                }
 3135            })?;
 3136
 3137            let workspace_count = cx.update(|_window, cx| {
 3138                cx.windows()
 3139                    .iter()
 3140                    .filter(|window| window.downcast::<MultiWorkspace>().is_some())
 3141                    .count()
 3142            })?;
 3143
 3144            #[cfg(target_os = "macos")]
 3145            let save_last_workspace = false;
 3146
 3147            // On Linux and Windows, closing the last window should restore the last workspace.
 3148            #[cfg(not(target_os = "macos"))]
 3149            let save_last_workspace = {
 3150                let remaining_workspaces = cx.update(|_window, cx| {
 3151                    cx.windows()
 3152                        .iter()
 3153                        .filter_map(|window| window.downcast::<MultiWorkspace>())
 3154                        .filter_map(|multi_workspace| {
 3155                            multi_workspace
 3156                                .update(cx, |multi_workspace, _, cx| {
 3157                                    multi_workspace.workspace().read(cx).removing
 3158                                })
 3159                                .ok()
 3160                        })
 3161                        .filter(|removing| !removing)
 3162                        .count()
 3163                })?;
 3164
 3165                close_intent != CloseIntent::ReplaceWindow && remaining_workspaces == 0
 3166            };
 3167
 3168            if let Some(active_call) = active_call
 3169                && workspace_count == 1
 3170                && cx
 3171                    .update(|_window, cx| active_call.0.is_in_room(cx))
 3172                    .unwrap_or(false)
 3173            {
 3174                if close_intent == CloseIntent::CloseWindow {
 3175                    this.update(cx, |_, cx| cx.emit(Event::Activate))?;
 3176                    let answer = cx.update(|window, cx| {
 3177                        window.prompt(
 3178                            PromptLevel::Warning,
 3179                            "Do you want to leave the current call?",
 3180                            None,
 3181                            &["Close window and hang up", "Cancel"],
 3182                            cx,
 3183                        )
 3184                    })?;
 3185
 3186                    if answer.await.log_err() == Some(1) {
 3187                        return anyhow::Ok(false);
 3188                    } else {
 3189                        if let Ok(task) = cx.update(|_window, cx| active_call.0.hang_up(cx)) {
 3190                            task.await.log_err();
 3191                        }
 3192                    }
 3193                }
 3194                if close_intent == CloseIntent::ReplaceWindow {
 3195                    _ = cx.update(|_window, cx| {
 3196                        let multi_workspace = cx
 3197                            .windows()
 3198                            .iter()
 3199                            .filter_map(|window| window.downcast::<MultiWorkspace>())
 3200                            .next()
 3201                            .unwrap();
 3202                        let project = multi_workspace
 3203                            .read(cx)?
 3204                            .workspace()
 3205                            .read(cx)
 3206                            .project
 3207                            .clone();
 3208                        if project.read(cx).is_shared() {
 3209                            active_call.0.unshare_project(project, cx)?;
 3210                        }
 3211                        Ok::<_, anyhow::Error>(())
 3212                    });
 3213                }
 3214            }
 3215
 3216            let save_result = this
 3217                .update_in(cx, |this, window, cx| {
 3218                    this.save_all_internal(SaveIntent::Close, window, cx)
 3219                })?
 3220                .await;
 3221
 3222            // If we're not quitting, but closing, we remove the workspace from
 3223            // the current session.
 3224            if close_intent != CloseIntent::Quit
 3225                && !save_last_workspace
 3226                && save_result.as_ref().is_ok_and(|&res| res)
 3227            {
 3228                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))?
 3229                    .await;
 3230            }
 3231
 3232            save_result
 3233        })
 3234    }
 3235
 3236    fn save_all(&mut self, action: &SaveAll, window: &mut Window, cx: &mut Context<Self>) {
 3237        self.save_all_internal(
 3238            action.save_intent.unwrap_or(SaveIntent::SaveAll),
 3239            window,
 3240            cx,
 3241        )
 3242        .detach_and_log_err(cx);
 3243    }
 3244
 3245    fn send_keystrokes(
 3246        &mut self,
 3247        action: &SendKeystrokes,
 3248        window: &mut Window,
 3249        cx: &mut Context<Self>,
 3250    ) {
 3251        let keystrokes: Vec<Keystroke> = action
 3252            .0
 3253            .split(' ')
 3254            .flat_map(|k| Keystroke::parse(k).log_err())
 3255            .map(|k| {
 3256                cx.keyboard_mapper()
 3257                    .map_key_equivalent(k, false)
 3258                    .inner()
 3259                    .clone()
 3260            })
 3261            .collect();
 3262        let _ = self.send_keystrokes_impl(keystrokes, window, cx);
 3263    }
 3264
 3265    pub fn send_keystrokes_impl(
 3266        &mut self,
 3267        keystrokes: Vec<Keystroke>,
 3268        window: &mut Window,
 3269        cx: &mut Context<Self>,
 3270    ) -> Shared<Task<()>> {
 3271        let mut state = self.dispatching_keystrokes.borrow_mut();
 3272        if !state.dispatched.insert(keystrokes.clone()) {
 3273            cx.propagate();
 3274            return state.task.clone().unwrap();
 3275        }
 3276
 3277        state.queue.extend(keystrokes);
 3278
 3279        let keystrokes = self.dispatching_keystrokes.clone();
 3280        if state.task.is_none() {
 3281            state.task = Some(
 3282                window
 3283                    .spawn(cx, async move |cx| {
 3284                        // limit to 100 keystrokes to avoid infinite recursion.
 3285                        for _ in 0..100 {
 3286                            let keystroke = {
 3287                                let mut state = keystrokes.borrow_mut();
 3288                                let Some(keystroke) = state.queue.pop_front() else {
 3289                                    state.dispatched.clear();
 3290                                    state.task.take();
 3291                                    return;
 3292                                };
 3293                                keystroke
 3294                            };
 3295                            cx.update(|window, cx| {
 3296                                let focused = window.focused(cx);
 3297                                window.dispatch_keystroke(keystroke.clone(), cx);
 3298                                if window.focused(cx) != focused {
 3299                                    // dispatch_keystroke may cause the focus to change.
 3300                                    // draw's side effect is to schedule the FocusChanged events in the current flush effect cycle
 3301                                    // And we need that to happen before the next keystroke to keep vim mode happy...
 3302                                    // (Note that the tests always do this implicitly, so you must manually test with something like:
 3303                                    //   "bindings": { "g z": ["workspace::SendKeystrokes", ": j <enter> u"]}
 3304                                    // )
 3305                                    window.draw(cx).clear();
 3306                                }
 3307                            })
 3308                            .ok();
 3309
 3310                            // Yield between synthetic keystrokes so deferred focus and
 3311                            // other effects can settle before dispatching the next key.
 3312                            yield_now().await;
 3313                        }
 3314
 3315                        *keystrokes.borrow_mut() = Default::default();
 3316                        log::error!("over 100 keystrokes passed to send_keystrokes");
 3317                    })
 3318                    .shared(),
 3319            );
 3320        }
 3321        state.task.clone().unwrap()
 3322    }
 3323
 3324    fn save_all_internal(
 3325        &mut self,
 3326        mut save_intent: SaveIntent,
 3327        window: &mut Window,
 3328        cx: &mut Context<Self>,
 3329    ) -> Task<Result<bool>> {
 3330        if self.project.read(cx).is_disconnected(cx) {
 3331            return Task::ready(Ok(true));
 3332        }
 3333        let dirty_items = self
 3334            .panes
 3335            .iter()
 3336            .flat_map(|pane| {
 3337                pane.read(cx).items().filter_map(|item| {
 3338                    if item.is_dirty(cx) {
 3339                        item.tab_content_text(0, cx);
 3340                        Some((pane.downgrade(), item.boxed_clone()))
 3341                    } else {
 3342                        None
 3343                    }
 3344                })
 3345            })
 3346            .collect::<Vec<_>>();
 3347
 3348        let project = self.project.clone();
 3349        cx.spawn_in(window, async move |workspace, cx| {
 3350            let dirty_items = if save_intent == SaveIntent::Close && !dirty_items.is_empty() {
 3351                let (serialize_tasks, remaining_dirty_items) =
 3352                    workspace.update_in(cx, |workspace, window, cx| {
 3353                        let mut remaining_dirty_items = Vec::new();
 3354                        let mut serialize_tasks = Vec::new();
 3355                        for (pane, item) in dirty_items {
 3356                            if let Some(task) = item
 3357                                .to_serializable_item_handle(cx)
 3358                                .and_then(|handle| handle.serialize(workspace, true, window, cx))
 3359                            {
 3360                                serialize_tasks.push(task);
 3361                            } else {
 3362                                remaining_dirty_items.push((pane, item));
 3363                            }
 3364                        }
 3365                        (serialize_tasks, remaining_dirty_items)
 3366                    })?;
 3367
 3368                futures::future::try_join_all(serialize_tasks).await?;
 3369
 3370                if !remaining_dirty_items.is_empty() {
 3371                    workspace.update(cx, |_, cx| cx.emit(Event::Activate))?;
 3372                }
 3373
 3374                if remaining_dirty_items.len() > 1 {
 3375                    let answer = workspace.update_in(cx, |_, window, cx| {
 3376                        let detail = Pane::file_names_for_prompt(
 3377                            &mut remaining_dirty_items.iter().map(|(_, handle)| handle),
 3378                            cx,
 3379                        );
 3380                        window.prompt(
 3381                            PromptLevel::Warning,
 3382                            "Do you want to save all changes in the following files?",
 3383                            Some(&detail),
 3384                            &["Save all", "Discard all", "Cancel"],
 3385                            cx,
 3386                        )
 3387                    })?;
 3388                    match answer.await.log_err() {
 3389                        Some(0) => save_intent = SaveIntent::SaveAll,
 3390                        Some(1) => save_intent = SaveIntent::Skip,
 3391                        Some(2) => return Ok(false),
 3392                        _ => {}
 3393                    }
 3394                }
 3395
 3396                remaining_dirty_items
 3397            } else {
 3398                dirty_items
 3399            };
 3400
 3401            for (pane, item) in dirty_items {
 3402                let (singleton, project_entry_ids) = cx.update(|_, cx| {
 3403                    (
 3404                        item.buffer_kind(cx) == ItemBufferKind::Singleton,
 3405                        item.project_entry_ids(cx),
 3406                    )
 3407                })?;
 3408                if (singleton || !project_entry_ids.is_empty())
 3409                    && !Pane::save_item(project.clone(), &pane, &*item, save_intent, cx).await?
 3410                {
 3411                    return Ok(false);
 3412                }
 3413            }
 3414            Ok(true)
 3415        })
 3416    }
 3417
 3418    pub fn open_workspace_for_paths(
 3419        &mut self,
 3420        // replace_current_window: bool,
 3421        mut open_mode: OpenMode,
 3422        paths: Vec<PathBuf>,
 3423        window: &mut Window,
 3424        cx: &mut Context<Self>,
 3425    ) -> Task<Result<Entity<Workspace>>> {
 3426        let requesting_window = window.window_handle().downcast::<MultiWorkspace>();
 3427        let is_remote = self.project.read(cx).is_via_collab();
 3428        let has_worktree = self.project.read(cx).worktrees(cx).next().is_some();
 3429        let has_dirty_items = self.items(cx).any(|item| item.is_dirty(cx));
 3430
 3431        let workspace_is_empty = !is_remote && !has_worktree && !has_dirty_items;
 3432        if workspace_is_empty {
 3433            open_mode = OpenMode::Activate;
 3434        }
 3435
 3436        let app_state = self.app_state.clone();
 3437
 3438        cx.spawn(async move |_, cx| {
 3439            let OpenResult { workspace, .. } = cx
 3440                .update(|cx| {
 3441                    open_paths(
 3442                        &paths,
 3443                        app_state,
 3444                        OpenOptions {
 3445                            requesting_window,
 3446                            open_mode,
 3447                            ..Default::default()
 3448                        },
 3449                        cx,
 3450                    )
 3451                })
 3452                .await?;
 3453            Ok(workspace)
 3454        })
 3455    }
 3456
 3457    #[allow(clippy::type_complexity)]
 3458    pub fn open_paths(
 3459        &mut self,
 3460        mut abs_paths: Vec<PathBuf>,
 3461        options: OpenOptions,
 3462        pane: Option<WeakEntity<Pane>>,
 3463        window: &mut Window,
 3464        cx: &mut Context<Self>,
 3465    ) -> Task<Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>> {
 3466        let fs = self.app_state.fs.clone();
 3467
 3468        let caller_ordered_abs_paths = abs_paths.clone();
 3469
 3470        // Sort the paths to ensure we add worktrees for parents before their children.
 3471        abs_paths.sort_unstable();
 3472        cx.spawn_in(window, async move |this, cx| {
 3473            let mut tasks = Vec::with_capacity(abs_paths.len());
 3474
 3475            for abs_path in &abs_paths {
 3476                let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
 3477                    OpenVisible::All => Some(true),
 3478                    OpenVisible::None => Some(false),
 3479                    OpenVisible::OnlyFiles => match fs.metadata(abs_path).await.log_err() {
 3480                        Some(Some(metadata)) => Some(!metadata.is_dir),
 3481                        Some(None) => Some(true),
 3482                        None => None,
 3483                    },
 3484                    OpenVisible::OnlyDirectories => match fs.metadata(abs_path).await.log_err() {
 3485                        Some(Some(metadata)) => Some(metadata.is_dir),
 3486                        Some(None) => Some(false),
 3487                        None => None,
 3488                    },
 3489                };
 3490                let project_path = match visible {
 3491                    Some(visible) => match this
 3492                        .update(cx, |this, cx| {
 3493                            Workspace::project_path_for_path(
 3494                                this.project.clone(),
 3495                                abs_path,
 3496                                visible,
 3497                                cx,
 3498                            )
 3499                        })
 3500                        .log_err()
 3501                    {
 3502                        Some(project_path) => project_path.await.log_err(),
 3503                        None => None,
 3504                    },
 3505                    None => None,
 3506                };
 3507
 3508                let this = this.clone();
 3509                let abs_path: Arc<Path> = SanitizedPath::new(&abs_path).as_path().into();
 3510                let fs = fs.clone();
 3511                let pane = pane.clone();
 3512                let task = cx.spawn(async move |cx| {
 3513                    let (_worktree, project_path) = project_path?;
 3514                    if fs.is_dir(&abs_path).await {
 3515                        // Opening a directory should not race to update the active entry.
 3516                        // We'll select/reveal a deterministic final entry after all paths finish opening.
 3517                        None
 3518                    } else {
 3519                        Some(
 3520                            this.update_in(cx, |this, window, cx| {
 3521                                this.open_path(
 3522                                    project_path,
 3523                                    pane,
 3524                                    options.focus.unwrap_or(true),
 3525                                    window,
 3526                                    cx,
 3527                                )
 3528                            })
 3529                            .ok()?
 3530                            .await,
 3531                        )
 3532                    }
 3533                });
 3534                tasks.push(task);
 3535            }
 3536
 3537            let results = futures::future::join_all(tasks).await;
 3538
 3539            // Determine the winner using the fake/abstract FS metadata, not `Path::is_dir`.
 3540            let mut winner: Option<(PathBuf, bool)> = None;
 3541            for abs_path in caller_ordered_abs_paths.into_iter().rev() {
 3542                if let Some(Some(metadata)) = fs.metadata(&abs_path).await.log_err() {
 3543                    if !metadata.is_dir {
 3544                        winner = Some((abs_path, false));
 3545                        break;
 3546                    }
 3547                    if winner.is_none() {
 3548                        winner = Some((abs_path, true));
 3549                    }
 3550                } else if winner.is_none() {
 3551                    winner = Some((abs_path, false));
 3552                }
 3553            }
 3554
 3555            // Compute the winner entry id on the foreground thread and emit once, after all
 3556            // paths finish opening. This avoids races between concurrently-opening paths
 3557            // (directories in particular) and makes the resulting project panel selection
 3558            // deterministic.
 3559            if let Some((winner_abs_path, winner_is_dir)) = winner {
 3560                'emit_winner: {
 3561                    let winner_abs_path: Arc<Path> =
 3562                        SanitizedPath::new(&winner_abs_path).as_path().into();
 3563
 3564                    let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
 3565                        OpenVisible::All => true,
 3566                        OpenVisible::None => false,
 3567                        OpenVisible::OnlyFiles => !winner_is_dir,
 3568                        OpenVisible::OnlyDirectories => winner_is_dir,
 3569                    };
 3570
 3571                    let Some(worktree_task) = this
 3572                        .update(cx, |workspace, cx| {
 3573                            workspace.project.update(cx, |project, cx| {
 3574                                project.find_or_create_worktree(
 3575                                    winner_abs_path.as_ref(),
 3576                                    visible,
 3577                                    cx,
 3578                                )
 3579                            })
 3580                        })
 3581                        .ok()
 3582                    else {
 3583                        break 'emit_winner;
 3584                    };
 3585
 3586                    let Ok((worktree, _)) = worktree_task.await else {
 3587                        break 'emit_winner;
 3588                    };
 3589
 3590                    let Ok(Some(entry_id)) = this.update(cx, |_, cx| {
 3591                        let worktree = worktree.read(cx);
 3592                        let worktree_abs_path = worktree.abs_path();
 3593                        let entry = if winner_abs_path.as_ref() == worktree_abs_path.as_ref() {
 3594                            worktree.root_entry()
 3595                        } else {
 3596                            winner_abs_path
 3597                                .strip_prefix(worktree_abs_path.as_ref())
 3598                                .ok()
 3599                                .and_then(|relative_path| {
 3600                                    let relative_path =
 3601                                        RelPath::new(relative_path, PathStyle::local())
 3602                                            .log_err()?;
 3603                                    worktree.entry_for_path(&relative_path)
 3604                                })
 3605                        }?;
 3606                        Some(entry.id)
 3607                    }) else {
 3608                        break 'emit_winner;
 3609                    };
 3610
 3611                    this.update(cx, |workspace, cx| {
 3612                        workspace.project.update(cx, |_, cx| {
 3613                            cx.emit(project::Event::ActiveEntryChanged(Some(entry_id)));
 3614                        });
 3615                    })
 3616                    .ok();
 3617                }
 3618            }
 3619
 3620            results
 3621        })
 3622    }
 3623
 3624    pub fn open_resolved_path(
 3625        &mut self,
 3626        path: ResolvedPath,
 3627        window: &mut Window,
 3628        cx: &mut Context<Self>,
 3629    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3630        match path {
 3631            ResolvedPath::ProjectPath { project_path, .. } => {
 3632                self.open_path(project_path, None, true, window, cx)
 3633            }
 3634            ResolvedPath::AbsPath { path, .. } => self.open_abs_path(
 3635                PathBuf::from(path),
 3636                OpenOptions {
 3637                    visible: Some(OpenVisible::None),
 3638                    ..Default::default()
 3639                },
 3640                window,
 3641                cx,
 3642            ),
 3643        }
 3644    }
 3645
 3646    pub fn absolute_path_of_worktree(
 3647        &self,
 3648        worktree_id: WorktreeId,
 3649        cx: &mut Context<Self>,
 3650    ) -> Option<PathBuf> {
 3651        self.project
 3652            .read(cx)
 3653            .worktree_for_id(worktree_id, cx)
 3654            // TODO: use `abs_path` or `root_dir`
 3655            .map(|wt| wt.read(cx).abs_path().as_ref().to_path_buf())
 3656    }
 3657
 3658    pub fn add_folder_to_project(
 3659        &mut self,
 3660        _: &AddFolderToProject,
 3661        window: &mut Window,
 3662        cx: &mut Context<Self>,
 3663    ) {
 3664        let project = self.project.read(cx);
 3665        if project.is_via_collab() {
 3666            self.show_error(
 3667                &anyhow!("You cannot add folders to someone else's project"),
 3668                cx,
 3669            );
 3670            return;
 3671        }
 3672        let paths = self.prompt_for_open_path(
 3673            PathPromptOptions {
 3674                files: false,
 3675                directories: true,
 3676                multiple: true,
 3677                prompt: None,
 3678            },
 3679            DirectoryLister::Project(self.project.clone()),
 3680            window,
 3681            cx,
 3682        );
 3683        cx.spawn_in(window, async move |this, cx| {
 3684            if let Some(paths) = paths.await.log_err().flatten() {
 3685                let results = this
 3686                    .update_in(cx, |this, window, cx| {
 3687                        this.open_paths(
 3688                            paths,
 3689                            OpenOptions {
 3690                                visible: Some(OpenVisible::All),
 3691                                ..Default::default()
 3692                            },
 3693                            None,
 3694                            window,
 3695                            cx,
 3696                        )
 3697                    })?
 3698                    .await;
 3699                for result in results.into_iter().flatten() {
 3700                    result.log_err();
 3701                }
 3702            }
 3703            anyhow::Ok(())
 3704        })
 3705        .detach_and_log_err(cx);
 3706    }
 3707
 3708    pub fn project_path_for_path(
 3709        project: Entity<Project>,
 3710        abs_path: &Path,
 3711        visible: bool,
 3712        cx: &mut App,
 3713    ) -> Task<Result<(Entity<Worktree>, ProjectPath)>> {
 3714        let entry = project.update(cx, |project, cx| {
 3715            project.find_or_create_worktree(abs_path, visible, cx)
 3716        });
 3717        cx.spawn(async move |cx| {
 3718            let (worktree, path) = entry.await?;
 3719            let worktree_id = worktree.read_with(cx, |t, _| t.id());
 3720            Ok((worktree, ProjectPath { worktree_id, path }))
 3721        })
 3722    }
 3723
 3724    pub fn items<'a>(&'a self, cx: &'a App) -> impl 'a + Iterator<Item = &'a Box<dyn ItemHandle>> {
 3725        self.panes.iter().flat_map(|pane| pane.read(cx).items())
 3726    }
 3727
 3728    pub fn item_of_type<T: Item>(&self, cx: &App) -> Option<Entity<T>> {
 3729        self.items_of_type(cx).max_by_key(|item| item.item_id())
 3730    }
 3731
 3732    pub fn items_of_type<'a, T: Item>(
 3733        &'a self,
 3734        cx: &'a App,
 3735    ) -> impl 'a + Iterator<Item = Entity<T>> {
 3736        self.panes
 3737            .iter()
 3738            .flat_map(|pane| pane.read(cx).items_of_type())
 3739    }
 3740
 3741    pub fn active_item(&self, cx: &App) -> Option<Box<dyn ItemHandle>> {
 3742        self.active_pane().read(cx).active_item()
 3743    }
 3744
 3745    pub fn active_item_as<I: 'static>(&self, cx: &App) -> Option<Entity<I>> {
 3746        let item = self.active_item(cx)?;
 3747        item.to_any_view().downcast::<I>().ok()
 3748    }
 3749
 3750    fn active_project_path(&self, cx: &App) -> Option<ProjectPath> {
 3751        self.active_item(cx).and_then(|item| item.project_path(cx))
 3752    }
 3753
 3754    pub fn most_recent_active_path(&self, cx: &App) -> Option<PathBuf> {
 3755        self.recent_navigation_history_iter(cx)
 3756            .filter_map(|(path, abs_path)| {
 3757                let worktree = self
 3758                    .project
 3759                    .read(cx)
 3760                    .worktree_for_id(path.worktree_id, cx)?;
 3761                if worktree.read(cx).is_visible() {
 3762                    abs_path
 3763                } else {
 3764                    None
 3765                }
 3766            })
 3767            .next()
 3768    }
 3769
 3770    pub fn save_active_item(
 3771        &mut self,
 3772        save_intent: SaveIntent,
 3773        window: &mut Window,
 3774        cx: &mut App,
 3775    ) -> Task<Result<()>> {
 3776        let project = self.project.clone();
 3777        let pane = self.active_pane();
 3778        let item = pane.read(cx).active_item();
 3779        let pane = pane.downgrade();
 3780
 3781        window.spawn(cx, async move |cx| {
 3782            if let Some(item) = item {
 3783                Pane::save_item(project, &pane, item.as_ref(), save_intent, cx)
 3784                    .await
 3785                    .map(|_| ())
 3786            } else {
 3787                Ok(())
 3788            }
 3789        })
 3790    }
 3791
 3792    pub fn close_inactive_items_and_panes(
 3793        &mut self,
 3794        action: &CloseInactiveTabsAndPanes,
 3795        window: &mut Window,
 3796        cx: &mut Context<Self>,
 3797    ) {
 3798        if let Some(task) = self.close_all_internal(
 3799            true,
 3800            action.save_intent.unwrap_or(SaveIntent::Close),
 3801            window,
 3802            cx,
 3803        ) {
 3804            task.detach_and_log_err(cx)
 3805        }
 3806    }
 3807
 3808    pub fn close_all_items_and_panes(
 3809        &mut self,
 3810        action: &CloseAllItemsAndPanes,
 3811        window: &mut Window,
 3812        cx: &mut Context<Self>,
 3813    ) {
 3814        if let Some(task) = self.close_all_internal(
 3815            false,
 3816            action.save_intent.unwrap_or(SaveIntent::Close),
 3817            window,
 3818            cx,
 3819        ) {
 3820            task.detach_and_log_err(cx)
 3821        }
 3822    }
 3823
 3824    /// Closes the active item across all panes.
 3825    pub fn close_item_in_all_panes(
 3826        &mut self,
 3827        action: &CloseItemInAllPanes,
 3828        window: &mut Window,
 3829        cx: &mut Context<Self>,
 3830    ) {
 3831        let Some(active_item) = self.active_pane().read(cx).active_item() else {
 3832            return;
 3833        };
 3834
 3835        let save_intent = action.save_intent.unwrap_or(SaveIntent::Close);
 3836        let close_pinned = action.close_pinned;
 3837
 3838        if let Some(project_path) = active_item.project_path(cx) {
 3839            self.close_items_with_project_path(
 3840                &project_path,
 3841                save_intent,
 3842                close_pinned,
 3843                window,
 3844                cx,
 3845            );
 3846        } else if close_pinned || !self.active_pane().read(cx).is_active_item_pinned() {
 3847            let item_id = active_item.item_id();
 3848            self.active_pane().update(cx, |pane, cx| {
 3849                pane.close_item_by_id(item_id, save_intent, window, cx)
 3850                    .detach_and_log_err(cx);
 3851            });
 3852        }
 3853    }
 3854
 3855    /// Closes all items with the given project path across all panes.
 3856    pub fn close_items_with_project_path(
 3857        &mut self,
 3858        project_path: &ProjectPath,
 3859        save_intent: SaveIntent,
 3860        close_pinned: bool,
 3861        window: &mut Window,
 3862        cx: &mut Context<Self>,
 3863    ) {
 3864        let panes = self.panes().to_vec();
 3865        for pane in panes {
 3866            pane.update(cx, |pane, cx| {
 3867                pane.close_items_for_project_path(
 3868                    project_path,
 3869                    save_intent,
 3870                    close_pinned,
 3871                    window,
 3872                    cx,
 3873                )
 3874                .detach_and_log_err(cx);
 3875            });
 3876        }
 3877    }
 3878
 3879    fn close_all_internal(
 3880        &mut self,
 3881        retain_active_pane: bool,
 3882        save_intent: SaveIntent,
 3883        window: &mut Window,
 3884        cx: &mut Context<Self>,
 3885    ) -> Option<Task<Result<()>>> {
 3886        let current_pane = self.active_pane();
 3887
 3888        let mut tasks = Vec::new();
 3889
 3890        if retain_active_pane {
 3891            let current_pane_close = current_pane.update(cx, |pane, cx| {
 3892                pane.close_other_items(
 3893                    &CloseOtherItems {
 3894                        save_intent: None,
 3895                        close_pinned: false,
 3896                    },
 3897                    None,
 3898                    window,
 3899                    cx,
 3900                )
 3901            });
 3902
 3903            tasks.push(current_pane_close);
 3904        }
 3905
 3906        for pane in self.panes() {
 3907            if retain_active_pane && pane.entity_id() == current_pane.entity_id() {
 3908                continue;
 3909            }
 3910
 3911            let close_pane_items = pane.update(cx, |pane: &mut Pane, cx| {
 3912                pane.close_all_items(
 3913                    &CloseAllItems {
 3914                        save_intent: Some(save_intent),
 3915                        close_pinned: false,
 3916                    },
 3917                    window,
 3918                    cx,
 3919                )
 3920            });
 3921
 3922            tasks.push(close_pane_items)
 3923        }
 3924
 3925        if tasks.is_empty() {
 3926            None
 3927        } else {
 3928            Some(cx.spawn_in(window, async move |_, _| {
 3929                for task in tasks {
 3930                    task.await?
 3931                }
 3932                Ok(())
 3933            }))
 3934        }
 3935    }
 3936
 3937    pub fn is_dock_at_position_open(&self, position: DockPosition, cx: &mut Context<Self>) -> bool {
 3938        self.dock_at_position(position).read(cx).is_open()
 3939    }
 3940
 3941    pub fn toggle_dock(
 3942        &mut self,
 3943        dock_side: DockPosition,
 3944        window: &mut Window,
 3945        cx: &mut Context<Self>,
 3946    ) {
 3947        let mut focus_center = false;
 3948        let mut reveal_dock = false;
 3949
 3950        let other_is_zoomed = self.zoomed.is_some() && self.zoomed_position != Some(dock_side);
 3951        let was_visible = self.is_dock_at_position_open(dock_side, cx) && !other_is_zoomed;
 3952
 3953        if let Some(panel) = self.dock_at_position(dock_side).read(cx).active_panel() {
 3954            telemetry::event!(
 3955                "Panel Button Clicked",
 3956                name = panel.persistent_name(),
 3957                toggle_state = !was_visible
 3958            );
 3959        }
 3960        if was_visible {
 3961            self.save_open_dock_positions(cx);
 3962        }
 3963
 3964        let dock = self.dock_at_position(dock_side);
 3965        dock.update(cx, |dock, cx| {
 3966            dock.set_open(!was_visible, window, cx);
 3967
 3968            if dock.active_panel().is_none() {
 3969                let Some(panel_ix) = dock
 3970                    .first_enabled_panel_idx(cx)
 3971                    .log_with_level(log::Level::Info)
 3972                else {
 3973                    return;
 3974                };
 3975                dock.activate_panel(panel_ix, window, cx);
 3976            }
 3977
 3978            if let Some(active_panel) = dock.active_panel() {
 3979                if was_visible {
 3980                    if active_panel
 3981                        .panel_focus_handle(cx)
 3982                        .contains_focused(window, cx)
 3983                    {
 3984                        focus_center = true;
 3985                    }
 3986                } else {
 3987                    let focus_handle = &active_panel.panel_focus_handle(cx);
 3988                    window.focus(focus_handle, cx);
 3989                    reveal_dock = true;
 3990                }
 3991            }
 3992        });
 3993
 3994        if reveal_dock {
 3995            self.dismiss_zoomed_items_to_reveal(Some(dock_side), window, cx);
 3996        }
 3997
 3998        if focus_center {
 3999            self.active_pane
 4000                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx))
 4001        }
 4002
 4003        cx.notify();
 4004        self.serialize_workspace(window, cx);
 4005    }
 4006
 4007    fn active_dock(&self, window: &Window, cx: &Context<Self>) -> Option<&Entity<Dock>> {
 4008        self.all_docks().into_iter().find(|&dock| {
 4009            dock.read(cx).is_open() && dock.focus_handle(cx).contains_focused(window, cx)
 4010        })
 4011    }
 4012
 4013    fn close_active_dock(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
 4014        if let Some(dock) = self.active_dock(window, cx).cloned() {
 4015            self.save_open_dock_positions(cx);
 4016            dock.update(cx, |dock, cx| {
 4017                dock.set_open(false, window, cx);
 4018            });
 4019            return true;
 4020        }
 4021        false
 4022    }
 4023
 4024    pub fn close_all_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4025        self.save_open_dock_positions(cx);
 4026        for dock in self.all_docks() {
 4027            dock.update(cx, |dock, cx| {
 4028                dock.set_open(false, window, cx);
 4029            });
 4030        }
 4031
 4032        cx.focus_self(window);
 4033        cx.notify();
 4034        self.serialize_workspace(window, cx);
 4035    }
 4036
 4037    fn get_open_dock_positions(&self, cx: &Context<Self>) -> Vec<DockPosition> {
 4038        self.all_docks()
 4039            .into_iter()
 4040            .filter_map(|dock| {
 4041                let dock_ref = dock.read(cx);
 4042                if dock_ref.is_open() {
 4043                    Some(dock_ref.position())
 4044                } else {
 4045                    None
 4046                }
 4047            })
 4048            .collect()
 4049    }
 4050
 4051    /// Saves the positions of currently open docks.
 4052    ///
 4053    /// Updates `last_open_dock_positions` with positions of all currently open
 4054    /// docks, to later be restored by the 'Toggle All Docks' action.
 4055    fn save_open_dock_positions(&mut self, cx: &mut Context<Self>) {
 4056        let open_dock_positions = self.get_open_dock_positions(cx);
 4057        if !open_dock_positions.is_empty() {
 4058            self.last_open_dock_positions = open_dock_positions;
 4059        }
 4060    }
 4061
 4062    /// Toggles all docks between open and closed states.
 4063    ///
 4064    /// If any docks are open, closes all and remembers their positions. If all
 4065    /// docks are closed, restores the last remembered dock configuration.
 4066    fn toggle_all_docks(
 4067        &mut self,
 4068        _: &ToggleAllDocks,
 4069        window: &mut Window,
 4070        cx: &mut Context<Self>,
 4071    ) {
 4072        let open_dock_positions = self.get_open_dock_positions(cx);
 4073
 4074        if !open_dock_positions.is_empty() {
 4075            self.close_all_docks(window, cx);
 4076        } else if !self.last_open_dock_positions.is_empty() {
 4077            self.restore_last_open_docks(window, cx);
 4078        }
 4079    }
 4080
 4081    /// Reopens docks from the most recently remembered configuration.
 4082    ///
 4083    /// Opens all docks whose positions are stored in `last_open_dock_positions`
 4084    /// and clears the stored positions.
 4085    fn restore_last_open_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4086        let positions_to_open = std::mem::take(&mut self.last_open_dock_positions);
 4087
 4088        for position in positions_to_open {
 4089            let dock = self.dock_at_position(position);
 4090            dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
 4091        }
 4092
 4093        cx.focus_self(window);
 4094        cx.notify();
 4095        self.serialize_workspace(window, cx);
 4096    }
 4097
 4098    /// Transfer focus to the panel of the given type.
 4099    pub fn focus_panel<T: Panel>(
 4100        &mut self,
 4101        window: &mut Window,
 4102        cx: &mut Context<Self>,
 4103    ) -> Option<Entity<T>> {
 4104        let panel = self.focus_or_unfocus_panel::<T>(window, cx, &mut |_, _, _| true)?;
 4105        panel.to_any().downcast().ok()
 4106    }
 4107
 4108    /// Focus the panel of the given type if it isn't already focused. If it is
 4109    /// already focused, then transfer focus back to the workspace center.
 4110    /// When the `close_panel_on_toggle` setting is enabled, also closes the
 4111    /// panel when transferring focus back to the center.
 4112    pub fn toggle_panel_focus<T: Panel>(
 4113        &mut self,
 4114        window: &mut Window,
 4115        cx: &mut Context<Self>,
 4116    ) -> bool {
 4117        let mut did_focus_panel = false;
 4118        self.focus_or_unfocus_panel::<T>(window, cx, &mut |panel, window, cx| {
 4119            did_focus_panel = !panel.panel_focus_handle(cx).contains_focused(window, cx);
 4120            did_focus_panel
 4121        });
 4122
 4123        if !did_focus_panel && WorkspaceSettings::get_global(cx).close_panel_on_toggle {
 4124            self.close_panel::<T>(window, cx);
 4125        }
 4126
 4127        telemetry::event!(
 4128            "Panel Button Clicked",
 4129            name = T::persistent_name(),
 4130            toggle_state = did_focus_panel
 4131        );
 4132
 4133        did_focus_panel
 4134    }
 4135
 4136    pub fn focus_center_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4137        if let Some(item) = self.active_item(cx) {
 4138            item.item_focus_handle(cx).focus(window, cx);
 4139        } else {
 4140            log::error!("Could not find a focus target when switching focus to the center panes",);
 4141        }
 4142    }
 4143
 4144    pub fn activate_panel_for_proto_id(
 4145        &mut self,
 4146        panel_id: PanelId,
 4147        window: &mut Window,
 4148        cx: &mut Context<Self>,
 4149    ) -> Option<Arc<dyn PanelHandle>> {
 4150        let mut panel = None;
 4151        for dock in self.all_docks() {
 4152            if let Some(panel_index) = dock.read(cx).panel_index_for_proto_id(panel_id) {
 4153                panel = dock.update(cx, |dock, cx| {
 4154                    dock.activate_panel(panel_index, window, cx);
 4155                    dock.set_open(true, window, cx);
 4156                    dock.active_panel().cloned()
 4157                });
 4158                break;
 4159            }
 4160        }
 4161
 4162        if panel.is_some() {
 4163            cx.notify();
 4164            self.serialize_workspace(window, cx);
 4165        }
 4166
 4167        panel
 4168    }
 4169
 4170    /// Focus or unfocus the given panel type, depending on the given callback.
 4171    fn focus_or_unfocus_panel<T: Panel>(
 4172        &mut self,
 4173        window: &mut Window,
 4174        cx: &mut Context<Self>,
 4175        should_focus: &mut dyn FnMut(&dyn PanelHandle, &mut Window, &mut Context<Dock>) -> bool,
 4176    ) -> Option<Arc<dyn PanelHandle>> {
 4177        let mut result_panel = None;
 4178        let mut serialize = false;
 4179        for dock in self.all_docks() {
 4180            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 4181                let mut focus_center = false;
 4182                let panel = dock.update(cx, |dock, cx| {
 4183                    dock.activate_panel(panel_index, window, cx);
 4184
 4185                    let panel = dock.active_panel().cloned();
 4186                    if let Some(panel) = panel.as_ref() {
 4187                        if should_focus(&**panel, window, cx) {
 4188                            dock.set_open(true, window, cx);
 4189                            panel.panel_focus_handle(cx).focus(window, cx);
 4190                        } else {
 4191                            focus_center = true;
 4192                        }
 4193                    }
 4194                    panel
 4195                });
 4196
 4197                if focus_center {
 4198                    self.active_pane
 4199                        .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx))
 4200                }
 4201
 4202                result_panel = panel;
 4203                serialize = true;
 4204                break;
 4205            }
 4206        }
 4207
 4208        if serialize {
 4209            self.serialize_workspace(window, cx);
 4210        }
 4211
 4212        cx.notify();
 4213        result_panel
 4214    }
 4215
 4216    /// Open the panel of the given type
 4217    pub fn open_panel<T: Panel>(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4218        for dock in self.all_docks() {
 4219            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 4220                dock.update(cx, |dock, cx| {
 4221                    dock.activate_panel(panel_index, window, cx);
 4222                    dock.set_open(true, window, cx);
 4223                });
 4224            }
 4225        }
 4226    }
 4227
 4228    /// Open the panel of the given type, dismissing any zoomed items that
 4229    /// would obscure it (e.g. a zoomed terminal).
 4230    pub fn reveal_panel<T: Panel>(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4231        let dock_position = self.all_docks().iter().find_map(|dock| {
 4232            let dock = dock.read(cx);
 4233            dock.panel_index_for_type::<T>().map(|_| dock.position())
 4234        });
 4235        self.dismiss_zoomed_items_to_reveal(dock_position, window, cx);
 4236        self.open_panel::<T>(window, cx);
 4237    }
 4238
 4239    pub fn close_panel<T: Panel>(&self, window: &mut Window, cx: &mut Context<Self>) {
 4240        for dock in self.all_docks().iter() {
 4241            dock.update(cx, |dock, cx| {
 4242                if dock.panel::<T>().is_some() {
 4243                    dock.set_open(false, window, cx)
 4244                }
 4245            })
 4246        }
 4247    }
 4248
 4249    pub fn panel<T: Panel>(&self, cx: &App) -> Option<Entity<T>> {
 4250        self.all_docks()
 4251            .iter()
 4252            .find_map(|dock| dock.read(cx).panel::<T>())
 4253    }
 4254
 4255    fn dismiss_zoomed_items_to_reveal(
 4256        &mut self,
 4257        dock_to_reveal: Option<DockPosition>,
 4258        window: &mut Window,
 4259        cx: &mut Context<Self>,
 4260    ) {
 4261        // If a center pane is zoomed, unzoom it.
 4262        for pane in &self.panes {
 4263            if pane != &self.active_pane || dock_to_reveal.is_some() {
 4264                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 4265            }
 4266        }
 4267
 4268        // If another dock is zoomed, hide it.
 4269        let mut focus_center = false;
 4270        for dock in self.all_docks() {
 4271            dock.update(cx, |dock, cx| {
 4272                if Some(dock.position()) != dock_to_reveal
 4273                    && let Some(panel) = dock.active_panel()
 4274                    && panel.is_zoomed(window, cx)
 4275                {
 4276                    focus_center |= panel.panel_focus_handle(cx).contains_focused(window, cx);
 4277                    dock.set_open(false, window, cx);
 4278                }
 4279            });
 4280        }
 4281
 4282        if focus_center {
 4283            self.active_pane
 4284                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx))
 4285        }
 4286
 4287        if self.zoomed_position != dock_to_reveal {
 4288            self.zoomed = None;
 4289            self.zoomed_position = None;
 4290            cx.emit(Event::ZoomChanged);
 4291        }
 4292
 4293        cx.notify();
 4294    }
 4295
 4296    fn add_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 4297        let pane = cx.new(|cx| {
 4298            let mut pane = Pane::new(
 4299                self.weak_handle(),
 4300                self.project.clone(),
 4301                self.pane_history_timestamp.clone(),
 4302                None,
 4303                NewFile.boxed_clone(),
 4304                true,
 4305                window,
 4306                cx,
 4307            );
 4308            pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 4309            pane
 4310        });
 4311        cx.subscribe_in(&pane, window, Self::handle_pane_event)
 4312            .detach();
 4313        self.panes.push(pane.clone());
 4314
 4315        window.focus(&pane.focus_handle(cx), cx);
 4316
 4317        cx.emit(Event::PaneAdded(pane.clone()));
 4318        pane
 4319    }
 4320
 4321    pub fn add_item_to_center(
 4322        &mut self,
 4323        item: Box<dyn ItemHandle>,
 4324        window: &mut Window,
 4325        cx: &mut Context<Self>,
 4326    ) -> bool {
 4327        if let Some(center_pane) = self.last_active_center_pane.clone() {
 4328            if let Some(center_pane) = center_pane.upgrade() {
 4329                center_pane.update(cx, |pane, cx| {
 4330                    pane.add_item(item, true, true, None, window, cx)
 4331                });
 4332                true
 4333            } else {
 4334                false
 4335            }
 4336        } else {
 4337            false
 4338        }
 4339    }
 4340
 4341    pub fn add_item_to_active_pane(
 4342        &mut self,
 4343        item: Box<dyn ItemHandle>,
 4344        destination_index: Option<usize>,
 4345        focus_item: bool,
 4346        window: &mut Window,
 4347        cx: &mut App,
 4348    ) {
 4349        self.add_item(
 4350            self.active_pane.clone(),
 4351            item,
 4352            destination_index,
 4353            false,
 4354            focus_item,
 4355            window,
 4356            cx,
 4357        )
 4358    }
 4359
 4360    pub fn add_item(
 4361        &mut self,
 4362        pane: Entity<Pane>,
 4363        item: Box<dyn ItemHandle>,
 4364        destination_index: Option<usize>,
 4365        activate_pane: bool,
 4366        focus_item: bool,
 4367        window: &mut Window,
 4368        cx: &mut App,
 4369    ) {
 4370        pane.update(cx, |pane, cx| {
 4371            pane.add_item(
 4372                item,
 4373                activate_pane,
 4374                focus_item,
 4375                destination_index,
 4376                window,
 4377                cx,
 4378            )
 4379        });
 4380    }
 4381
 4382    pub fn split_item(
 4383        &mut self,
 4384        split_direction: SplitDirection,
 4385        item: Box<dyn ItemHandle>,
 4386        window: &mut Window,
 4387        cx: &mut Context<Self>,
 4388    ) {
 4389        let new_pane = self.split_pane(self.active_pane.clone(), split_direction, window, cx);
 4390        self.add_item(new_pane, item, None, true, true, window, cx);
 4391    }
 4392
 4393    pub fn open_abs_path(
 4394        &mut self,
 4395        abs_path: PathBuf,
 4396        options: OpenOptions,
 4397        window: &mut Window,
 4398        cx: &mut Context<Self>,
 4399    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4400        cx.spawn_in(window, async move |workspace, cx| {
 4401            let open_paths_task_result = workspace
 4402                .update_in(cx, |workspace, window, cx| {
 4403                    workspace.open_paths(vec![abs_path.clone()], options, None, window, cx)
 4404                })
 4405                .with_context(|| format!("open abs path {abs_path:?} task spawn"))?
 4406                .await;
 4407            anyhow::ensure!(
 4408                open_paths_task_result.len() == 1,
 4409                "open abs path {abs_path:?} task returned incorrect number of results"
 4410            );
 4411            match open_paths_task_result
 4412                .into_iter()
 4413                .next()
 4414                .expect("ensured single task result")
 4415            {
 4416                Some(open_result) => {
 4417                    open_result.with_context(|| format!("open abs path {abs_path:?} task join"))
 4418                }
 4419                None => anyhow::bail!("open abs path {abs_path:?} task returned None"),
 4420            }
 4421        })
 4422    }
 4423
 4424    pub fn split_abs_path(
 4425        &mut self,
 4426        abs_path: PathBuf,
 4427        visible: bool,
 4428        window: &mut Window,
 4429        cx: &mut Context<Self>,
 4430    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4431        let project_path_task =
 4432            Workspace::project_path_for_path(self.project.clone(), &abs_path, visible, cx);
 4433        cx.spawn_in(window, async move |this, cx| {
 4434            let (_, path) = project_path_task.await?;
 4435            this.update_in(cx, |this, window, cx| this.split_path(path, window, cx))?
 4436                .await
 4437        })
 4438    }
 4439
 4440    pub fn open_path(
 4441        &mut self,
 4442        path: impl Into<ProjectPath>,
 4443        pane: Option<WeakEntity<Pane>>,
 4444        focus_item: bool,
 4445        window: &mut Window,
 4446        cx: &mut App,
 4447    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4448        self.open_path_preview(path, pane, focus_item, false, true, window, cx)
 4449    }
 4450
 4451    pub fn open_path_preview(
 4452        &mut self,
 4453        path: impl Into<ProjectPath>,
 4454        pane: Option<WeakEntity<Pane>>,
 4455        focus_item: bool,
 4456        allow_preview: bool,
 4457        activate: bool,
 4458        window: &mut Window,
 4459        cx: &mut App,
 4460    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4461        let pane = pane.unwrap_or_else(|| {
 4462            self.last_active_center_pane.clone().unwrap_or_else(|| {
 4463                self.panes
 4464                    .first()
 4465                    .expect("There must be an active pane")
 4466                    .downgrade()
 4467            })
 4468        });
 4469
 4470        let project_path = path.into();
 4471        let task = self.load_path(project_path.clone(), window, cx);
 4472        window.spawn(cx, async move |cx| {
 4473            let (project_entry_id, build_item) = task.await?;
 4474
 4475            pane.update_in(cx, |pane, window, cx| {
 4476                pane.open_item(
 4477                    project_entry_id,
 4478                    project_path,
 4479                    focus_item,
 4480                    allow_preview,
 4481                    activate,
 4482                    None,
 4483                    window,
 4484                    cx,
 4485                    build_item,
 4486                )
 4487            })
 4488        })
 4489    }
 4490
 4491    pub fn split_path(
 4492        &mut self,
 4493        path: impl Into<ProjectPath>,
 4494        window: &mut Window,
 4495        cx: &mut Context<Self>,
 4496    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4497        self.split_path_preview(path, false, None, window, cx)
 4498    }
 4499
 4500    pub fn split_path_preview(
 4501        &mut self,
 4502        path: impl Into<ProjectPath>,
 4503        allow_preview: bool,
 4504        split_direction: Option<SplitDirection>,
 4505        window: &mut Window,
 4506        cx: &mut Context<Self>,
 4507    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4508        let pane = self.last_active_center_pane.clone().unwrap_or_else(|| {
 4509            self.panes
 4510                .first()
 4511                .expect("There must be an active pane")
 4512                .downgrade()
 4513        });
 4514
 4515        if let Member::Pane(center_pane) = &self.center.root
 4516            && center_pane.read(cx).items_len() == 0
 4517        {
 4518            return self.open_path(path, Some(pane), true, window, cx);
 4519        }
 4520
 4521        let project_path = path.into();
 4522        let task = self.load_path(project_path.clone(), window, cx);
 4523        cx.spawn_in(window, async move |this, cx| {
 4524            let (project_entry_id, build_item) = task.await?;
 4525            this.update_in(cx, move |this, window, cx| -> Option<_> {
 4526                let pane = pane.upgrade()?;
 4527                let new_pane = this.split_pane(
 4528                    pane,
 4529                    split_direction.unwrap_or(SplitDirection::Right),
 4530                    window,
 4531                    cx,
 4532                );
 4533                new_pane.update(cx, |new_pane, cx| {
 4534                    Some(new_pane.open_item(
 4535                        project_entry_id,
 4536                        project_path,
 4537                        true,
 4538                        allow_preview,
 4539                        true,
 4540                        None,
 4541                        window,
 4542                        cx,
 4543                        build_item,
 4544                    ))
 4545                })
 4546            })
 4547            .map(|option| option.context("pane was dropped"))?
 4548        })
 4549    }
 4550
 4551    fn load_path(
 4552        &mut self,
 4553        path: ProjectPath,
 4554        window: &mut Window,
 4555        cx: &mut App,
 4556    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
 4557        let registry = cx.default_global::<ProjectItemRegistry>().clone();
 4558        registry.open_path(self.project(), &path, window, cx)
 4559    }
 4560
 4561    pub fn find_project_item<T>(
 4562        &self,
 4563        pane: &Entity<Pane>,
 4564        project_item: &Entity<T::Item>,
 4565        cx: &App,
 4566    ) -> Option<Entity<T>>
 4567    where
 4568        T: ProjectItem,
 4569    {
 4570        use project::ProjectItem as _;
 4571        let project_item = project_item.read(cx);
 4572        let entry_id = project_item.entry_id(cx);
 4573        let project_path = project_item.project_path(cx);
 4574
 4575        let mut item = None;
 4576        if let Some(entry_id) = entry_id {
 4577            item = pane.read(cx).item_for_entry(entry_id, cx);
 4578        }
 4579        if item.is_none()
 4580            && let Some(project_path) = project_path
 4581        {
 4582            item = pane.read(cx).item_for_path(project_path, cx);
 4583        }
 4584
 4585        item.and_then(|item| item.downcast::<T>())
 4586    }
 4587
 4588    pub fn is_project_item_open<T>(
 4589        &self,
 4590        pane: &Entity<Pane>,
 4591        project_item: &Entity<T::Item>,
 4592        cx: &App,
 4593    ) -> bool
 4594    where
 4595        T: ProjectItem,
 4596    {
 4597        self.find_project_item::<T>(pane, project_item, cx)
 4598            .is_some()
 4599    }
 4600
 4601    pub fn open_project_item<T>(
 4602        &mut self,
 4603        pane: Entity<Pane>,
 4604        project_item: Entity<T::Item>,
 4605        activate_pane: bool,
 4606        focus_item: bool,
 4607        keep_old_preview: bool,
 4608        allow_new_preview: bool,
 4609        window: &mut Window,
 4610        cx: &mut Context<Self>,
 4611    ) -> Entity<T>
 4612    where
 4613        T: ProjectItem,
 4614    {
 4615        let old_item_id = pane.read(cx).active_item().map(|item| item.item_id());
 4616
 4617        if let Some(item) = self.find_project_item(&pane, &project_item, cx) {
 4618            if !keep_old_preview
 4619                && let Some(old_id) = old_item_id
 4620                && old_id != item.item_id()
 4621            {
 4622                // switching to a different item, so unpreview old active item
 4623                pane.update(cx, |pane, _| {
 4624                    pane.unpreview_item_if_preview(old_id);
 4625                });
 4626            }
 4627
 4628            self.activate_item(&item, activate_pane, focus_item, window, cx);
 4629            if !allow_new_preview {
 4630                pane.update(cx, |pane, _| {
 4631                    pane.unpreview_item_if_preview(item.item_id());
 4632                });
 4633            }
 4634            return item;
 4635        }
 4636
 4637        let item = pane.update(cx, |pane, cx| {
 4638            cx.new(|cx| {
 4639                T::for_project_item(self.project().clone(), Some(pane), project_item, window, cx)
 4640            })
 4641        });
 4642        let mut destination_index = None;
 4643        pane.update(cx, |pane, cx| {
 4644            if !keep_old_preview && let Some(old_id) = old_item_id {
 4645                pane.unpreview_item_if_preview(old_id);
 4646            }
 4647            if allow_new_preview {
 4648                destination_index = pane.replace_preview_item_id(item.item_id(), window, cx);
 4649            }
 4650        });
 4651
 4652        self.add_item(
 4653            pane,
 4654            Box::new(item.clone()),
 4655            destination_index,
 4656            activate_pane,
 4657            focus_item,
 4658            window,
 4659            cx,
 4660        );
 4661        item
 4662    }
 4663
 4664    pub fn open_shared_screen(
 4665        &mut self,
 4666        peer_id: PeerId,
 4667        window: &mut Window,
 4668        cx: &mut Context<Self>,
 4669    ) {
 4670        if let Some(shared_screen) =
 4671            self.shared_screen_for_peer(peer_id, &self.active_pane, window, cx)
 4672        {
 4673            self.active_pane.update(cx, |pane, cx| {
 4674                pane.add_item(Box::new(shared_screen), false, true, None, window, cx)
 4675            });
 4676        }
 4677    }
 4678
 4679    pub fn activate_item(
 4680        &mut self,
 4681        item: &dyn ItemHandle,
 4682        activate_pane: bool,
 4683        focus_item: bool,
 4684        window: &mut Window,
 4685        cx: &mut App,
 4686    ) -> bool {
 4687        let result = self.panes.iter().find_map(|pane| {
 4688            pane.read(cx)
 4689                .index_for_item(item)
 4690                .map(|ix| (pane.clone(), ix))
 4691        });
 4692        if let Some((pane, ix)) = result {
 4693            pane.update(cx, |pane, cx| {
 4694                pane.activate_item(ix, activate_pane, focus_item, window, cx)
 4695            });
 4696            true
 4697        } else {
 4698            false
 4699        }
 4700    }
 4701
 4702    fn activate_pane_at_index(
 4703        &mut self,
 4704        action: &ActivatePane,
 4705        window: &mut Window,
 4706        cx: &mut Context<Self>,
 4707    ) {
 4708        let panes = self.center.panes();
 4709        if let Some(pane) = panes.get(action.0).map(|p| (*p).clone()) {
 4710            window.focus(&pane.focus_handle(cx), cx);
 4711        } else {
 4712            self.split_and_clone(self.active_pane.clone(), SplitDirection::Right, window, cx)
 4713                .detach();
 4714        }
 4715    }
 4716
 4717    fn move_item_to_pane_at_index(
 4718        &mut self,
 4719        action: &MoveItemToPane,
 4720        window: &mut Window,
 4721        cx: &mut Context<Self>,
 4722    ) {
 4723        let panes = self.center.panes();
 4724        let destination = match panes.get(action.destination) {
 4725            Some(&destination) => destination.clone(),
 4726            None => {
 4727                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 4728                    return;
 4729                }
 4730                let direction = SplitDirection::Right;
 4731                let split_off_pane = self
 4732                    .find_pane_in_direction(direction, cx)
 4733                    .unwrap_or_else(|| self.active_pane.clone());
 4734                let new_pane = self.add_pane(window, cx);
 4735                self.center.split(&split_off_pane, &new_pane, direction, cx);
 4736                new_pane
 4737            }
 4738        };
 4739
 4740        if action.clone {
 4741            if self
 4742                .active_pane
 4743                .read(cx)
 4744                .active_item()
 4745                .is_some_and(|item| item.can_split(cx))
 4746            {
 4747                clone_active_item(
 4748                    self.database_id(),
 4749                    &self.active_pane,
 4750                    &destination,
 4751                    action.focus,
 4752                    window,
 4753                    cx,
 4754                );
 4755                return;
 4756            }
 4757        }
 4758        move_active_item(
 4759            &self.active_pane,
 4760            &destination,
 4761            action.focus,
 4762            true,
 4763            window,
 4764            cx,
 4765        )
 4766    }
 4767
 4768    pub fn activate_next_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 next_ix = (ix + 1) % panes.len();
 4772            let next_pane = panes[next_ix].clone();
 4773            window.focus(&next_pane.focus_handle(cx), cx);
 4774        }
 4775    }
 4776
 4777    pub fn activate_previous_pane(&mut self, window: &mut Window, cx: &mut App) {
 4778        let panes = self.center.panes();
 4779        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 4780            let prev_ix = cmp::min(ix.wrapping_sub(1), panes.len() - 1);
 4781            let prev_pane = panes[prev_ix].clone();
 4782            window.focus(&prev_pane.focus_handle(cx), cx);
 4783        }
 4784    }
 4785
 4786    pub fn activate_last_pane(&mut self, window: &mut Window, cx: &mut App) {
 4787        let last_pane = self.center.last_pane();
 4788        window.focus(&last_pane.focus_handle(cx), cx);
 4789    }
 4790
 4791    pub fn activate_pane_in_direction(
 4792        &mut self,
 4793        direction: SplitDirection,
 4794        window: &mut Window,
 4795        cx: &mut App,
 4796    ) {
 4797        use ActivateInDirectionTarget as Target;
 4798        enum Origin {
 4799            Sidebar,
 4800            LeftDock,
 4801            RightDock,
 4802            BottomDock,
 4803            Center,
 4804        }
 4805
 4806        let origin: Origin = if self
 4807            .sidebar_focus_handle
 4808            .as_ref()
 4809            .is_some_and(|h| h.contains_focused(window, cx))
 4810        {
 4811            Origin::Sidebar
 4812        } else {
 4813            [
 4814                (&self.left_dock, Origin::LeftDock),
 4815                (&self.right_dock, Origin::RightDock),
 4816                (&self.bottom_dock, Origin::BottomDock),
 4817            ]
 4818            .into_iter()
 4819            .find_map(|(dock, origin)| {
 4820                if dock.focus_handle(cx).contains_focused(window, cx) && dock.read(cx).is_open() {
 4821                    Some(origin)
 4822                } else {
 4823                    None
 4824                }
 4825            })
 4826            .unwrap_or(Origin::Center)
 4827        };
 4828
 4829        let get_last_active_pane = || {
 4830            let pane = self
 4831                .last_active_center_pane
 4832                .clone()
 4833                .unwrap_or_else(|| {
 4834                    self.panes
 4835                        .first()
 4836                        .expect("There must be an active pane")
 4837                        .downgrade()
 4838                })
 4839                .upgrade()?;
 4840            (pane.read(cx).items_len() != 0).then_some(pane)
 4841        };
 4842
 4843        let try_dock =
 4844            |dock: &Entity<Dock>| dock.read(cx).is_open().then(|| Target::Dock(dock.clone()));
 4845
 4846        let sidebar_target = self
 4847            .sidebar_focus_handle
 4848            .as_ref()
 4849            .map(|h| Target::Sidebar(h.clone()));
 4850
 4851        let target = match (origin, direction) {
 4852            // From the sidebar, only Right navigates into the workspace.
 4853            (Origin::Sidebar, SplitDirection::Right) => try_dock(&self.left_dock)
 4854                .or_else(|| get_last_active_pane().map(Target::Pane))
 4855                .or_else(|| try_dock(&self.bottom_dock))
 4856                .or_else(|| try_dock(&self.right_dock)),
 4857
 4858            (Origin::Sidebar, _) => None,
 4859
 4860            // We're in the center, so we first try to go to a different pane,
 4861            // otherwise try to go to a dock.
 4862            (Origin::Center, direction) => {
 4863                if let Some(pane) = self.find_pane_in_direction(direction, cx) {
 4864                    Some(Target::Pane(pane))
 4865                } else {
 4866                    match direction {
 4867                        SplitDirection::Up => None,
 4868                        SplitDirection::Down => try_dock(&self.bottom_dock),
 4869                        SplitDirection::Left => try_dock(&self.left_dock).or(sidebar_target),
 4870                        SplitDirection::Right => try_dock(&self.right_dock),
 4871                    }
 4872                }
 4873            }
 4874
 4875            (Origin::LeftDock, SplitDirection::Right) => {
 4876                if let Some(last_active_pane) = get_last_active_pane() {
 4877                    Some(Target::Pane(last_active_pane))
 4878                } else {
 4879                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.right_dock))
 4880                }
 4881            }
 4882
 4883            (Origin::LeftDock, SplitDirection::Left) => sidebar_target,
 4884
 4885            (Origin::LeftDock, SplitDirection::Down)
 4886            | (Origin::RightDock, SplitDirection::Down) => try_dock(&self.bottom_dock),
 4887
 4888            (Origin::BottomDock, SplitDirection::Up) => get_last_active_pane().map(Target::Pane),
 4889            (Origin::BottomDock, SplitDirection::Left) => {
 4890                try_dock(&self.left_dock).or(sidebar_target)
 4891            }
 4892            (Origin::BottomDock, SplitDirection::Right) => try_dock(&self.right_dock),
 4893
 4894            (Origin::RightDock, SplitDirection::Left) => {
 4895                if let Some(last_active_pane) = get_last_active_pane() {
 4896                    Some(Target::Pane(last_active_pane))
 4897                } else {
 4898                    try_dock(&self.bottom_dock)
 4899                        .or_else(|| try_dock(&self.left_dock))
 4900                        .or(sidebar_target)
 4901                }
 4902            }
 4903
 4904            _ => None,
 4905        };
 4906
 4907        match target {
 4908            Some(ActivateInDirectionTarget::Pane(pane)) => {
 4909                let pane = pane.read(cx);
 4910                if let Some(item) = pane.active_item() {
 4911                    item.item_focus_handle(cx).focus(window, cx);
 4912                } else {
 4913                    log::error!(
 4914                        "Could not find a focus target when in switching focus in {direction} direction for a pane",
 4915                    );
 4916                }
 4917            }
 4918            Some(ActivateInDirectionTarget::Dock(dock)) => {
 4919                // Defer this to avoid a panic when the dock's active panel is already on the stack.
 4920                window.defer(cx, move |window, cx| {
 4921                    let dock = dock.read(cx);
 4922                    if let Some(panel) = dock.active_panel() {
 4923                        panel.panel_focus_handle(cx).focus(window, cx);
 4924                    } else {
 4925                        log::error!("Could not find a focus target when in switching focus in {direction} direction for a {:?} dock", dock.position());
 4926                    }
 4927                })
 4928            }
 4929            Some(ActivateInDirectionTarget::Sidebar(focus_handle)) => {
 4930                focus_handle.focus(window, cx);
 4931            }
 4932            None => {}
 4933        }
 4934    }
 4935
 4936    pub fn move_item_to_pane_in_direction(
 4937        &mut self,
 4938        action: &MoveItemToPaneInDirection,
 4939        window: &mut Window,
 4940        cx: &mut Context<Self>,
 4941    ) {
 4942        let destination = match self.find_pane_in_direction(action.direction, cx) {
 4943            Some(destination) => destination,
 4944            None => {
 4945                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 4946                    return;
 4947                }
 4948                let new_pane = self.add_pane(window, cx);
 4949                self.center
 4950                    .split(&self.active_pane, &new_pane, action.direction, cx);
 4951                new_pane
 4952            }
 4953        };
 4954
 4955        if action.clone {
 4956            if self
 4957                .active_pane
 4958                .read(cx)
 4959                .active_item()
 4960                .is_some_and(|item| item.can_split(cx))
 4961            {
 4962                clone_active_item(
 4963                    self.database_id(),
 4964                    &self.active_pane,
 4965                    &destination,
 4966                    action.focus,
 4967                    window,
 4968                    cx,
 4969                );
 4970                return;
 4971            }
 4972        }
 4973        move_active_item(
 4974            &self.active_pane,
 4975            &destination,
 4976            action.focus,
 4977            true,
 4978            window,
 4979            cx,
 4980        );
 4981    }
 4982
 4983    pub fn bounding_box_for_pane(&self, pane: &Entity<Pane>) -> Option<Bounds<Pixels>> {
 4984        self.center.bounding_box_for_pane(pane)
 4985    }
 4986
 4987    pub fn find_pane_in_direction(
 4988        &mut self,
 4989        direction: SplitDirection,
 4990        cx: &App,
 4991    ) -> Option<Entity<Pane>> {
 4992        self.center
 4993            .find_pane_in_direction(&self.active_pane, direction, cx)
 4994            .cloned()
 4995    }
 4996
 4997    pub fn swap_pane_in_direction(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 4998        if let Some(to) = self.find_pane_in_direction(direction, cx) {
 4999            self.center.swap(&self.active_pane, &to, cx);
 5000            cx.notify();
 5001        }
 5002    }
 5003
 5004    pub fn move_pane_to_border(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 5005        if self
 5006            .center
 5007            .move_to_border(&self.active_pane, direction, cx)
 5008            .unwrap()
 5009        {
 5010            cx.notify();
 5011        }
 5012    }
 5013
 5014    pub fn resize_pane(
 5015        &mut self,
 5016        axis: gpui::Axis,
 5017        amount: Pixels,
 5018        window: &mut Window,
 5019        cx: &mut Context<Self>,
 5020    ) {
 5021        let docks = self.all_docks();
 5022        let active_dock = docks
 5023            .into_iter()
 5024            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 5025
 5026        if let Some(dock_entity) = active_dock {
 5027            let dock = dock_entity.read(cx);
 5028            let Some(panel_size) = self.dock_size(&dock, window, cx) else {
 5029                return;
 5030            };
 5031            match dock.position() {
 5032                DockPosition::Left => self.resize_left_dock(panel_size + amount, window, cx),
 5033                DockPosition::Bottom => self.resize_bottom_dock(panel_size + amount, window, cx),
 5034                DockPosition::Right => self.resize_right_dock(panel_size + amount, window, cx),
 5035            }
 5036        } else {
 5037            self.center
 5038                .resize(&self.active_pane, axis, amount, &self.bounds, cx);
 5039        }
 5040        cx.notify();
 5041    }
 5042
 5043    pub fn reset_pane_sizes(&mut self, cx: &mut Context<Self>) {
 5044        self.center.reset_pane_sizes(cx);
 5045        cx.notify();
 5046    }
 5047
 5048    fn handle_pane_focused(
 5049        &mut self,
 5050        pane: Entity<Pane>,
 5051        window: &mut Window,
 5052        cx: &mut Context<Self>,
 5053    ) {
 5054        // This is explicitly hoisted out of the following check for pane identity as
 5055        // terminal panel panes are not registered as a center panes.
 5056        self.status_bar.update(cx, |status_bar, cx| {
 5057            status_bar.set_active_pane(&pane, window, cx);
 5058        });
 5059        if self.active_pane != pane {
 5060            self.set_active_pane(&pane, window, cx);
 5061        }
 5062
 5063        if self.last_active_center_pane.is_none() {
 5064            self.last_active_center_pane = Some(pane.downgrade());
 5065        }
 5066
 5067        // If this pane is in a dock, preserve that dock when dismissing zoomed items.
 5068        // This prevents the dock from closing when focus events fire during window activation.
 5069        // We also preserve any dock whose active panel itself has focus — this covers
 5070        // panels like AgentPanel that don't implement `pane()` but can still be zoomed.
 5071        let dock_to_preserve = self.all_docks().iter().find_map(|dock| {
 5072            let dock_read = dock.read(cx);
 5073            if let Some(panel) = dock_read.active_panel() {
 5074                if panel.pane(cx).is_some_and(|dock_pane| dock_pane == pane)
 5075                    || panel.panel_focus_handle(cx).contains_focused(window, cx)
 5076                {
 5077                    return Some(dock_read.position());
 5078                }
 5079            }
 5080            None
 5081        });
 5082
 5083        self.dismiss_zoomed_items_to_reveal(dock_to_preserve, window, cx);
 5084        if pane.read(cx).is_zoomed() {
 5085            self.zoomed = Some(pane.downgrade().into());
 5086        } else {
 5087            self.zoomed = None;
 5088        }
 5089        self.zoomed_position = None;
 5090        cx.emit(Event::ZoomChanged);
 5091        self.update_active_view_for_followers(window, cx);
 5092        pane.update(cx, |pane, _| {
 5093            pane.track_alternate_file_items();
 5094        });
 5095
 5096        cx.notify();
 5097    }
 5098
 5099    fn set_active_pane(
 5100        &mut self,
 5101        pane: &Entity<Pane>,
 5102        window: &mut Window,
 5103        cx: &mut Context<Self>,
 5104    ) {
 5105        self.active_pane = pane.clone();
 5106        self.active_item_path_changed(true, window, cx);
 5107        self.last_active_center_pane = Some(pane.downgrade());
 5108    }
 5109
 5110    fn handle_panel_focused(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5111        self.update_active_view_for_followers(window, cx);
 5112    }
 5113
 5114    fn handle_pane_event(
 5115        &mut self,
 5116        pane: &Entity<Pane>,
 5117        event: &pane::Event,
 5118        window: &mut Window,
 5119        cx: &mut Context<Self>,
 5120    ) {
 5121        let mut serialize_workspace = true;
 5122        match event {
 5123            pane::Event::AddItem { item } => {
 5124                item.added_to_pane(self, pane.clone(), window, cx);
 5125                cx.emit(Event::ItemAdded {
 5126                    item: item.boxed_clone(),
 5127                });
 5128            }
 5129            pane::Event::Split { direction, mode } => {
 5130                match mode {
 5131                    SplitMode::ClonePane => {
 5132                        self.split_and_clone(pane.clone(), *direction, window, cx)
 5133                            .detach();
 5134                    }
 5135                    SplitMode::EmptyPane => {
 5136                        self.split_pane(pane.clone(), *direction, window, cx);
 5137                    }
 5138                    SplitMode::MovePane => {
 5139                        self.split_and_move(pane.clone(), *direction, window, cx);
 5140                    }
 5141                };
 5142            }
 5143            pane::Event::JoinIntoNext => {
 5144                self.join_pane_into_next(pane.clone(), window, cx);
 5145            }
 5146            pane::Event::JoinAll => {
 5147                self.join_all_panes(window, cx);
 5148            }
 5149            pane::Event::Remove { focus_on_pane } => {
 5150                self.remove_pane(pane.clone(), focus_on_pane.clone(), window, cx);
 5151            }
 5152            pane::Event::ActivateItem {
 5153                local,
 5154                focus_changed,
 5155            } => {
 5156                window.invalidate_character_coordinates();
 5157
 5158                pane.update(cx, |pane, _| {
 5159                    pane.track_alternate_file_items();
 5160                });
 5161                if *local {
 5162                    self.unfollow_in_pane(pane, window, cx);
 5163                }
 5164                serialize_workspace = *focus_changed || pane != self.active_pane();
 5165                if pane == self.active_pane() {
 5166                    self.active_item_path_changed(*focus_changed, window, cx);
 5167                    self.update_active_view_for_followers(window, cx);
 5168                } else if *local {
 5169                    self.set_active_pane(pane, window, cx);
 5170                }
 5171            }
 5172            pane::Event::UserSavedItem { item, save_intent } => {
 5173                cx.emit(Event::UserSavedItem {
 5174                    pane: pane.downgrade(),
 5175                    item: item.boxed_clone(),
 5176                    save_intent: *save_intent,
 5177                });
 5178                serialize_workspace = false;
 5179            }
 5180            pane::Event::ChangeItemTitle => {
 5181                if *pane == self.active_pane {
 5182                    self.active_item_path_changed(false, window, cx);
 5183                }
 5184                serialize_workspace = false;
 5185            }
 5186            pane::Event::RemovedItem { item } => {
 5187                cx.emit(Event::ActiveItemChanged);
 5188                self.update_window_edited(window, cx);
 5189                if let hash_map::Entry::Occupied(entry) = self.panes_by_item.entry(item.item_id())
 5190                    && entry.get().entity_id() == pane.entity_id()
 5191                {
 5192                    entry.remove();
 5193                }
 5194                cx.emit(Event::ItemRemoved {
 5195                    item_id: item.item_id(),
 5196                });
 5197            }
 5198            pane::Event::Focus => {
 5199                window.invalidate_character_coordinates();
 5200                self.handle_pane_focused(pane.clone(), window, cx);
 5201            }
 5202            pane::Event::ZoomIn => {
 5203                if *pane == self.active_pane {
 5204                    pane.update(cx, |pane, cx| pane.set_zoomed(true, cx));
 5205                    if pane.read(cx).has_focus(window, cx) {
 5206                        self.zoomed = Some(pane.downgrade().into());
 5207                        self.zoomed_position = None;
 5208                        cx.emit(Event::ZoomChanged);
 5209                    }
 5210                    cx.notify();
 5211                }
 5212            }
 5213            pane::Event::ZoomOut => {
 5214                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 5215                if self.zoomed_position.is_none() {
 5216                    self.zoomed = None;
 5217                    cx.emit(Event::ZoomChanged);
 5218                }
 5219                cx.notify();
 5220            }
 5221            pane::Event::ItemPinned | pane::Event::ItemUnpinned => {}
 5222        }
 5223
 5224        if serialize_workspace {
 5225            self.serialize_workspace(window, cx);
 5226        }
 5227    }
 5228
 5229    pub fn unfollow_in_pane(
 5230        &mut self,
 5231        pane: &Entity<Pane>,
 5232        window: &mut Window,
 5233        cx: &mut Context<Workspace>,
 5234    ) -> Option<CollaboratorId> {
 5235        let leader_id = self.leader_for_pane(pane)?;
 5236        self.unfollow(leader_id, window, cx);
 5237        Some(leader_id)
 5238    }
 5239
 5240    pub fn split_pane(
 5241        &mut self,
 5242        pane_to_split: Entity<Pane>,
 5243        split_direction: SplitDirection,
 5244        window: &mut Window,
 5245        cx: &mut Context<Self>,
 5246    ) -> Entity<Pane> {
 5247        let new_pane = self.add_pane(window, cx);
 5248        self.center
 5249            .split(&pane_to_split, &new_pane, split_direction, cx);
 5250        cx.notify();
 5251        new_pane
 5252    }
 5253
 5254    pub fn split_and_move(
 5255        &mut self,
 5256        pane: Entity<Pane>,
 5257        direction: SplitDirection,
 5258        window: &mut Window,
 5259        cx: &mut Context<Self>,
 5260    ) {
 5261        let Some(item) = pane.update(cx, |pane, cx| pane.take_active_item(window, cx)) else {
 5262            return;
 5263        };
 5264        let new_pane = self.add_pane(window, cx);
 5265        new_pane.update(cx, |pane, cx| {
 5266            pane.add_item(item, true, true, None, window, cx)
 5267        });
 5268        self.center.split(&pane, &new_pane, direction, cx);
 5269        cx.notify();
 5270    }
 5271
 5272    pub fn split_and_clone(
 5273        &mut self,
 5274        pane: Entity<Pane>,
 5275        direction: SplitDirection,
 5276        window: &mut Window,
 5277        cx: &mut Context<Self>,
 5278    ) -> Task<Option<Entity<Pane>>> {
 5279        let Some(item) = pane.read(cx).active_item() else {
 5280            return Task::ready(None);
 5281        };
 5282        if !item.can_split(cx) {
 5283            return Task::ready(None);
 5284        }
 5285        let task = item.clone_on_split(self.database_id(), window, cx);
 5286        cx.spawn_in(window, async move |this, cx| {
 5287            if let Some(clone) = task.await {
 5288                this.update_in(cx, |this, window, cx| {
 5289                    let new_pane = this.add_pane(window, cx);
 5290                    let nav_history = pane.read(cx).fork_nav_history();
 5291                    new_pane.update(cx, |pane, cx| {
 5292                        pane.set_nav_history(nav_history, cx);
 5293                        pane.add_item(clone, true, true, None, window, cx)
 5294                    });
 5295                    this.center.split(&pane, &new_pane, direction, cx);
 5296                    cx.notify();
 5297                    new_pane
 5298                })
 5299                .ok()
 5300            } else {
 5301                None
 5302            }
 5303        })
 5304    }
 5305
 5306    pub fn join_all_panes(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5307        let active_item = self.active_pane.read(cx).active_item();
 5308        for pane in &self.panes {
 5309            join_pane_into_active(&self.active_pane, pane, window, cx);
 5310        }
 5311        if let Some(active_item) = active_item {
 5312            self.activate_item(active_item.as_ref(), true, true, window, cx);
 5313        }
 5314        cx.notify();
 5315    }
 5316
 5317    pub fn join_pane_into_next(
 5318        &mut self,
 5319        pane: Entity<Pane>,
 5320        window: &mut Window,
 5321        cx: &mut Context<Self>,
 5322    ) {
 5323        let next_pane = self
 5324            .find_pane_in_direction(SplitDirection::Right, cx)
 5325            .or_else(|| self.find_pane_in_direction(SplitDirection::Down, cx))
 5326            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 5327            .or_else(|| self.find_pane_in_direction(SplitDirection::Up, cx));
 5328        let Some(next_pane) = next_pane else {
 5329            return;
 5330        };
 5331        move_all_items(&pane, &next_pane, window, cx);
 5332        cx.notify();
 5333    }
 5334
 5335    fn remove_pane(
 5336        &mut self,
 5337        pane: Entity<Pane>,
 5338        focus_on: Option<Entity<Pane>>,
 5339        window: &mut Window,
 5340        cx: &mut Context<Self>,
 5341    ) {
 5342        if self.center.remove(&pane, cx).unwrap() {
 5343            self.force_remove_pane(&pane, &focus_on, window, cx);
 5344            self.unfollow_in_pane(&pane, window, cx);
 5345            self.last_leaders_by_pane.remove(&pane.downgrade());
 5346            for removed_item in pane.read(cx).items() {
 5347                self.panes_by_item.remove(&removed_item.item_id());
 5348            }
 5349
 5350            cx.notify();
 5351        } else {
 5352            self.active_item_path_changed(true, window, cx);
 5353        }
 5354        cx.emit(Event::PaneRemoved);
 5355    }
 5356
 5357    pub fn panes_mut(&mut self) -> &mut [Entity<Pane>] {
 5358        &mut self.panes
 5359    }
 5360
 5361    pub fn panes(&self) -> &[Entity<Pane>] {
 5362        &self.panes
 5363    }
 5364
 5365    pub fn active_pane(&self) -> &Entity<Pane> {
 5366        &self.active_pane
 5367    }
 5368
 5369    pub fn focused_pane(&self, window: &Window, cx: &App) -> Entity<Pane> {
 5370        for dock in self.all_docks() {
 5371            if dock.focus_handle(cx).contains_focused(window, cx)
 5372                && let Some(pane) = dock
 5373                    .read(cx)
 5374                    .active_panel()
 5375                    .and_then(|panel| panel.pane(cx))
 5376            {
 5377                return pane;
 5378            }
 5379        }
 5380        self.active_pane().clone()
 5381    }
 5382
 5383    pub fn adjacent_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 5384        self.find_pane_in_direction(SplitDirection::Right, cx)
 5385            .unwrap_or_else(|| {
 5386                self.split_pane(self.active_pane.clone(), SplitDirection::Right, window, cx)
 5387            })
 5388    }
 5389
 5390    pub fn pane_for(&self, handle: &dyn ItemHandle) -> Option<Entity<Pane>> {
 5391        self.pane_for_item_id(handle.item_id())
 5392    }
 5393
 5394    pub fn pane_for_item_id(&self, item_id: EntityId) -> Option<Entity<Pane>> {
 5395        let weak_pane = self.panes_by_item.get(&item_id)?;
 5396        weak_pane.upgrade()
 5397    }
 5398
 5399    pub fn pane_for_entity_id(&self, entity_id: EntityId) -> Option<Entity<Pane>> {
 5400        self.panes
 5401            .iter()
 5402            .find(|pane| pane.entity_id() == entity_id)
 5403            .cloned()
 5404    }
 5405
 5406    fn collaborator_left(&mut self, peer_id: PeerId, window: &mut Window, cx: &mut Context<Self>) {
 5407        self.follower_states.retain(|leader_id, state| {
 5408            if *leader_id == CollaboratorId::PeerId(peer_id) {
 5409                for item in state.items_by_leader_view_id.values() {
 5410                    item.view.set_leader_id(None, window, cx);
 5411                }
 5412                false
 5413            } else {
 5414                true
 5415            }
 5416        });
 5417        cx.notify();
 5418    }
 5419
 5420    pub fn start_following(
 5421        &mut self,
 5422        leader_id: impl Into<CollaboratorId>,
 5423        window: &mut Window,
 5424        cx: &mut Context<Self>,
 5425    ) -> Option<Task<Result<()>>> {
 5426        let leader_id = leader_id.into();
 5427        let pane = self.active_pane().clone();
 5428
 5429        self.last_leaders_by_pane
 5430            .insert(pane.downgrade(), leader_id);
 5431        self.unfollow(leader_id, window, cx);
 5432        self.unfollow_in_pane(&pane, window, cx);
 5433        self.follower_states.insert(
 5434            leader_id,
 5435            FollowerState {
 5436                center_pane: pane.clone(),
 5437                dock_pane: None,
 5438                active_view_id: None,
 5439                items_by_leader_view_id: Default::default(),
 5440            },
 5441        );
 5442        cx.notify();
 5443
 5444        match leader_id {
 5445            CollaboratorId::PeerId(leader_peer_id) => {
 5446                let room_id = self.active_call()?.room_id(cx)?;
 5447                let project_id = self.project.read(cx).remote_id();
 5448                let request = self.app_state.client.request(proto::Follow {
 5449                    room_id,
 5450                    project_id,
 5451                    leader_id: Some(leader_peer_id),
 5452                });
 5453
 5454                Some(cx.spawn_in(window, async move |this, cx| {
 5455                    let response = request.await?;
 5456                    this.update(cx, |this, _| {
 5457                        let state = this
 5458                            .follower_states
 5459                            .get_mut(&leader_id)
 5460                            .context("following interrupted")?;
 5461                        state.active_view_id = response
 5462                            .active_view
 5463                            .as_ref()
 5464                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 5465                        anyhow::Ok(())
 5466                    })??;
 5467                    if let Some(view) = response.active_view {
 5468                        Self::add_view_from_leader(this.clone(), leader_peer_id, &view, cx).await?;
 5469                    }
 5470                    this.update_in(cx, |this, window, cx| {
 5471                        this.leader_updated(leader_id, window, cx)
 5472                    })?;
 5473                    Ok(())
 5474                }))
 5475            }
 5476            CollaboratorId::Agent => {
 5477                self.leader_updated(leader_id, window, cx)?;
 5478                Some(Task::ready(Ok(())))
 5479            }
 5480        }
 5481    }
 5482
 5483    pub fn follow_next_collaborator(
 5484        &mut self,
 5485        _: &FollowNextCollaborator,
 5486        window: &mut Window,
 5487        cx: &mut Context<Self>,
 5488    ) {
 5489        let collaborators = self.project.read(cx).collaborators();
 5490        let next_leader_id = if let Some(leader_id) = self.leader_for_pane(&self.active_pane) {
 5491            let mut collaborators = collaborators.keys().copied();
 5492            for peer_id in collaborators.by_ref() {
 5493                if CollaboratorId::PeerId(peer_id) == leader_id {
 5494                    break;
 5495                }
 5496            }
 5497            collaborators.next().map(CollaboratorId::PeerId)
 5498        } else if let Some(last_leader_id) =
 5499            self.last_leaders_by_pane.get(&self.active_pane.downgrade())
 5500        {
 5501            match last_leader_id {
 5502                CollaboratorId::PeerId(peer_id) => {
 5503                    if collaborators.contains_key(peer_id) {
 5504                        Some(*last_leader_id)
 5505                    } else {
 5506                        None
 5507                    }
 5508                }
 5509                CollaboratorId::Agent => Some(CollaboratorId::Agent),
 5510            }
 5511        } else {
 5512            None
 5513        };
 5514
 5515        let pane = self.active_pane.clone();
 5516        let Some(leader_id) = next_leader_id.or_else(|| {
 5517            Some(CollaboratorId::PeerId(
 5518                collaborators.keys().copied().next()?,
 5519            ))
 5520        }) else {
 5521            return;
 5522        };
 5523        if self.unfollow_in_pane(&pane, window, cx) == Some(leader_id) {
 5524            return;
 5525        }
 5526        if let Some(task) = self.start_following(leader_id, window, cx) {
 5527            task.detach_and_log_err(cx)
 5528        }
 5529    }
 5530
 5531    pub fn follow(
 5532        &mut self,
 5533        leader_id: impl Into<CollaboratorId>,
 5534        window: &mut Window,
 5535        cx: &mut Context<Self>,
 5536    ) {
 5537        let leader_id = leader_id.into();
 5538
 5539        if let CollaboratorId::PeerId(peer_id) = leader_id {
 5540            let Some(active_call) = GlobalAnyActiveCall::try_global(cx) else {
 5541                return;
 5542            };
 5543            let Some(remote_participant) =
 5544                active_call.0.remote_participant_for_peer_id(peer_id, cx)
 5545            else {
 5546                return;
 5547            };
 5548
 5549            let project = self.project.read(cx);
 5550
 5551            let other_project_id = match remote_participant.location {
 5552                ParticipantLocation::External => None,
 5553                ParticipantLocation::UnsharedProject => None,
 5554                ParticipantLocation::SharedProject { project_id } => {
 5555                    if Some(project_id) == project.remote_id() {
 5556                        None
 5557                    } else {
 5558                        Some(project_id)
 5559                    }
 5560                }
 5561            };
 5562
 5563            // if they are active in another project, follow there.
 5564            if let Some(project_id) = other_project_id {
 5565                let app_state = self.app_state.clone();
 5566                crate::join_in_room_project(project_id, remote_participant.user.id, app_state, cx)
 5567                    .detach_and_prompt_err("Failed to join project", window, cx, |error, _, _| {
 5568                        Some(format!("{error:#}"))
 5569                    });
 5570            }
 5571        }
 5572
 5573        // if you're already following, find the right pane and focus it.
 5574        if let Some(follower_state) = self.follower_states.get(&leader_id) {
 5575            window.focus(&follower_state.pane().focus_handle(cx), cx);
 5576
 5577            return;
 5578        }
 5579
 5580        // Otherwise, follow.
 5581        if let Some(task) = self.start_following(leader_id, window, cx) {
 5582            task.detach_and_log_err(cx)
 5583        }
 5584    }
 5585
 5586    pub fn unfollow(
 5587        &mut self,
 5588        leader_id: impl Into<CollaboratorId>,
 5589        window: &mut Window,
 5590        cx: &mut Context<Self>,
 5591    ) -> Option<()> {
 5592        cx.notify();
 5593
 5594        let leader_id = leader_id.into();
 5595        let state = self.follower_states.remove(&leader_id)?;
 5596        for (_, item) in state.items_by_leader_view_id {
 5597            item.view.set_leader_id(None, window, cx);
 5598        }
 5599
 5600        if let CollaboratorId::PeerId(leader_peer_id) = leader_id {
 5601            let project_id = self.project.read(cx).remote_id();
 5602            let room_id = self.active_call()?.room_id(cx)?;
 5603            self.app_state
 5604                .client
 5605                .send(proto::Unfollow {
 5606                    room_id,
 5607                    project_id,
 5608                    leader_id: Some(leader_peer_id),
 5609                })
 5610                .log_err();
 5611        }
 5612
 5613        Some(())
 5614    }
 5615
 5616    pub fn is_being_followed(&self, id: impl Into<CollaboratorId>) -> bool {
 5617        self.follower_states.contains_key(&id.into())
 5618    }
 5619
 5620    fn active_item_path_changed(
 5621        &mut self,
 5622        focus_changed: bool,
 5623        window: &mut Window,
 5624        cx: &mut Context<Self>,
 5625    ) {
 5626        cx.emit(Event::ActiveItemChanged);
 5627        let active_entry = self.active_project_path(cx);
 5628        self.project.update(cx, |project, cx| {
 5629            project.set_active_path(active_entry.clone(), cx)
 5630        });
 5631
 5632        if focus_changed && let Some(project_path) = &active_entry {
 5633            let git_store_entity = self.project.read(cx).git_store().clone();
 5634            git_store_entity.update(cx, |git_store, cx| {
 5635                git_store.set_active_repo_for_path(project_path, cx);
 5636            });
 5637        }
 5638
 5639        self.update_window_title(window, cx);
 5640    }
 5641
 5642    fn update_window_title(&mut self, window: &mut Window, cx: &mut App) {
 5643        let project = self.project().read(cx);
 5644        let mut title = String::new();
 5645
 5646        for (i, worktree) in project.visible_worktrees(cx).enumerate() {
 5647            let name = {
 5648                let settings_location = SettingsLocation {
 5649                    worktree_id: worktree.read(cx).id(),
 5650                    path: RelPath::empty(),
 5651                };
 5652
 5653                let settings = WorktreeSettings::get(Some(settings_location), cx);
 5654                match &settings.project_name {
 5655                    Some(name) => name.as_str(),
 5656                    None => worktree.read(cx).root_name_str(),
 5657                }
 5658            };
 5659            if i > 0 {
 5660                title.push_str(", ");
 5661            }
 5662            title.push_str(name);
 5663        }
 5664
 5665        if title.is_empty() {
 5666            title = "empty project".to_string();
 5667        }
 5668
 5669        if let Some(path) = self.active_item(cx).and_then(|item| item.project_path(cx)) {
 5670            let filename = path.path.file_name().or_else(|| {
 5671                Some(
 5672                    project
 5673                        .worktree_for_id(path.worktree_id, cx)?
 5674                        .read(cx)
 5675                        .root_name_str(),
 5676                )
 5677            });
 5678
 5679            if let Some(filename) = filename {
 5680                title.push_str("");
 5681                title.push_str(filename.as_ref());
 5682            }
 5683        }
 5684
 5685        if project.is_via_collab() {
 5686            title.push_str("");
 5687        } else if project.is_shared() {
 5688            title.push_str("");
 5689        }
 5690
 5691        if let Some(last_title) = self.last_window_title.as_ref()
 5692            && &title == last_title
 5693        {
 5694            return;
 5695        }
 5696        window.set_window_title(&title);
 5697        SystemWindowTabController::update_tab_title(
 5698            cx,
 5699            window.window_handle().window_id(),
 5700            SharedString::from(&title),
 5701        );
 5702        self.last_window_title = Some(title);
 5703    }
 5704
 5705    fn update_window_edited(&mut self, window: &mut Window, cx: &mut App) {
 5706        let is_edited = !self.project.read(cx).is_disconnected(cx) && !self.dirty_items.is_empty();
 5707        if is_edited != self.window_edited {
 5708            self.window_edited = is_edited;
 5709            window.set_window_edited(self.window_edited)
 5710        }
 5711    }
 5712
 5713    fn update_item_dirty_state(
 5714        &mut self,
 5715        item: &dyn ItemHandle,
 5716        window: &mut Window,
 5717        cx: &mut App,
 5718    ) {
 5719        let is_dirty = item.is_dirty(cx);
 5720        let item_id = item.item_id();
 5721        let was_dirty = self.dirty_items.contains_key(&item_id);
 5722        if is_dirty == was_dirty {
 5723            return;
 5724        }
 5725        if was_dirty {
 5726            self.dirty_items.remove(&item_id);
 5727            self.update_window_edited(window, cx);
 5728            return;
 5729        }
 5730
 5731        let workspace = self.weak_handle();
 5732        let Some(window_handle) = window.window_handle().downcast::<MultiWorkspace>() else {
 5733            return;
 5734        };
 5735        let on_release_callback = Box::new(move |cx: &mut App| {
 5736            window_handle
 5737                .update(cx, |_, window, cx| {
 5738                    workspace
 5739                        .update(cx, |workspace, cx| {
 5740                            workspace.dirty_items.remove(&item_id);
 5741                            workspace.update_window_edited(window, cx)
 5742                        })
 5743                        .ok();
 5744                })
 5745                .ok();
 5746        });
 5747
 5748        let s = item.on_release(cx, on_release_callback);
 5749        self.dirty_items.insert(item_id, s);
 5750        self.update_window_edited(window, cx);
 5751    }
 5752
 5753    fn render_notifications(&self, _window: &mut Window, _cx: &mut Context<Self>) -> Option<Div> {
 5754        if self.notifications.is_empty() {
 5755            None
 5756        } else {
 5757            Some(
 5758                div()
 5759                    .absolute()
 5760                    .right_3()
 5761                    .bottom_3()
 5762                    .w_112()
 5763                    .h_full()
 5764                    .flex()
 5765                    .flex_col()
 5766                    .justify_end()
 5767                    .gap_2()
 5768                    .children(
 5769                        self.notifications
 5770                            .iter()
 5771                            .map(|(_, notification)| notification.clone().into_any()),
 5772                    ),
 5773            )
 5774        }
 5775    }
 5776
 5777    // RPC handlers
 5778
 5779    fn active_view_for_follower(
 5780        &self,
 5781        follower_project_id: Option<u64>,
 5782        window: &mut Window,
 5783        cx: &mut Context<Self>,
 5784    ) -> Option<proto::View> {
 5785        let (item, panel_id) = self.active_item_for_followers(window, cx);
 5786        let item = item?;
 5787        let leader_id = self
 5788            .pane_for(&*item)
 5789            .and_then(|pane| self.leader_for_pane(&pane));
 5790        let leader_peer_id = match leader_id {
 5791            Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 5792            Some(CollaboratorId::Agent) | None => None,
 5793        };
 5794
 5795        let item_handle = item.to_followable_item_handle(cx)?;
 5796        let id = item_handle.remote_id(&self.app_state.client, window, cx)?;
 5797        let variant = item_handle.to_state_proto(window, cx)?;
 5798
 5799        if item_handle.is_project_item(window, cx)
 5800            && (follower_project_id.is_none()
 5801                || follower_project_id != self.project.read(cx).remote_id())
 5802        {
 5803            return None;
 5804        }
 5805
 5806        Some(proto::View {
 5807            id: id.to_proto(),
 5808            leader_id: leader_peer_id,
 5809            variant: Some(variant),
 5810            panel_id: panel_id.map(|id| id as i32),
 5811        })
 5812    }
 5813
 5814    fn handle_follow(
 5815        &mut self,
 5816        follower_project_id: Option<u64>,
 5817        window: &mut Window,
 5818        cx: &mut Context<Self>,
 5819    ) -> proto::FollowResponse {
 5820        let active_view = self.active_view_for_follower(follower_project_id, window, cx);
 5821
 5822        cx.notify();
 5823        proto::FollowResponse {
 5824            views: active_view.iter().cloned().collect(),
 5825            active_view,
 5826        }
 5827    }
 5828
 5829    fn handle_update_followers(
 5830        &mut self,
 5831        leader_id: PeerId,
 5832        message: proto::UpdateFollowers,
 5833        _window: &mut Window,
 5834        _cx: &mut Context<Self>,
 5835    ) {
 5836        self.leader_updates_tx
 5837            .unbounded_send((leader_id, message))
 5838            .ok();
 5839    }
 5840
 5841    async fn process_leader_update(
 5842        this: &WeakEntity<Self>,
 5843        leader_id: PeerId,
 5844        update: proto::UpdateFollowers,
 5845        cx: &mut AsyncWindowContext,
 5846    ) -> Result<()> {
 5847        match update.variant.context("invalid update")? {
 5848            proto::update_followers::Variant::CreateView(view) => {
 5849                let view_id = ViewId::from_proto(view.id.clone().context("invalid view id")?)?;
 5850                let should_add_view = this.update(cx, |this, _| {
 5851                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 5852                        anyhow::Ok(!state.items_by_leader_view_id.contains_key(&view_id))
 5853                    } else {
 5854                        anyhow::Ok(false)
 5855                    }
 5856                })??;
 5857
 5858                if should_add_view {
 5859                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 5860                }
 5861            }
 5862            proto::update_followers::Variant::UpdateActiveView(update_active_view) => {
 5863                let should_add_view = this.update(cx, |this, _| {
 5864                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 5865                        state.active_view_id = update_active_view
 5866                            .view
 5867                            .as_ref()
 5868                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 5869
 5870                        if state.active_view_id.is_some_and(|view_id| {
 5871                            !state.items_by_leader_view_id.contains_key(&view_id)
 5872                        }) {
 5873                            anyhow::Ok(true)
 5874                        } else {
 5875                            anyhow::Ok(false)
 5876                        }
 5877                    } else {
 5878                        anyhow::Ok(false)
 5879                    }
 5880                })??;
 5881
 5882                if should_add_view && let Some(view) = update_active_view.view {
 5883                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 5884                }
 5885            }
 5886            proto::update_followers::Variant::UpdateView(update_view) => {
 5887                let variant = update_view.variant.context("missing update view variant")?;
 5888                let id = update_view.id.context("missing update view id")?;
 5889                let mut tasks = Vec::new();
 5890                this.update_in(cx, |this, window, cx| {
 5891                    let project = this.project.clone();
 5892                    if let Some(state) = this.follower_states.get(&leader_id.into()) {
 5893                        let view_id = ViewId::from_proto(id.clone())?;
 5894                        if let Some(item) = state.items_by_leader_view_id.get(&view_id) {
 5895                            tasks.push(item.view.apply_update_proto(
 5896                                &project,
 5897                                variant.clone(),
 5898                                window,
 5899                                cx,
 5900                            ));
 5901                        }
 5902                    }
 5903                    anyhow::Ok(())
 5904                })??;
 5905                try_join_all(tasks).await.log_err();
 5906            }
 5907        }
 5908        this.update_in(cx, |this, window, cx| {
 5909            this.leader_updated(leader_id, window, cx)
 5910        })?;
 5911        Ok(())
 5912    }
 5913
 5914    async fn add_view_from_leader(
 5915        this: WeakEntity<Self>,
 5916        leader_id: PeerId,
 5917        view: &proto::View,
 5918        cx: &mut AsyncWindowContext,
 5919    ) -> Result<()> {
 5920        let this = this.upgrade().context("workspace dropped")?;
 5921
 5922        let Some(id) = view.id.clone() else {
 5923            anyhow::bail!("no id for view");
 5924        };
 5925        let id = ViewId::from_proto(id)?;
 5926        let panel_id = view.panel_id.and_then(proto::PanelId::from_i32);
 5927
 5928        let pane = this.update(cx, |this, _cx| {
 5929            let state = this
 5930                .follower_states
 5931                .get(&leader_id.into())
 5932                .context("stopped following")?;
 5933            anyhow::Ok(state.pane().clone())
 5934        })?;
 5935        let existing_item = pane.update_in(cx, |pane, window, cx| {
 5936            let client = this.read(cx).client().clone();
 5937            pane.items().find_map(|item| {
 5938                let item = item.to_followable_item_handle(cx)?;
 5939                if item.remote_id(&client, window, cx) == Some(id) {
 5940                    Some(item)
 5941                } else {
 5942                    None
 5943                }
 5944            })
 5945        })?;
 5946        let item = if let Some(existing_item) = existing_item {
 5947            existing_item
 5948        } else {
 5949            let variant = view.variant.clone();
 5950            anyhow::ensure!(variant.is_some(), "missing view variant");
 5951
 5952            let task = cx.update(|window, cx| {
 5953                FollowableViewRegistry::from_state_proto(this.clone(), id, variant, window, cx)
 5954            })?;
 5955
 5956            let Some(task) = task else {
 5957                anyhow::bail!(
 5958                    "failed to construct view from leader (maybe from a different version of zed?)"
 5959                );
 5960            };
 5961
 5962            let mut new_item = task.await?;
 5963            pane.update_in(cx, |pane, window, cx| {
 5964                let mut item_to_remove = None;
 5965                for (ix, item) in pane.items().enumerate() {
 5966                    if let Some(item) = item.to_followable_item_handle(cx) {
 5967                        match new_item.dedup(item.as_ref(), window, cx) {
 5968                            Some(item::Dedup::KeepExisting) => {
 5969                                new_item =
 5970                                    item.boxed_clone().to_followable_item_handle(cx).unwrap();
 5971                                break;
 5972                            }
 5973                            Some(item::Dedup::ReplaceExisting) => {
 5974                                item_to_remove = Some((ix, item.item_id()));
 5975                                break;
 5976                            }
 5977                            None => {}
 5978                        }
 5979                    }
 5980                }
 5981
 5982                if let Some((ix, id)) = item_to_remove {
 5983                    pane.remove_item(id, false, false, window, cx);
 5984                    pane.add_item(new_item.boxed_clone(), false, false, Some(ix), window, cx);
 5985                }
 5986            })?;
 5987
 5988            new_item
 5989        };
 5990
 5991        this.update_in(cx, |this, window, cx| {
 5992            let state = this.follower_states.get_mut(&leader_id.into())?;
 5993            item.set_leader_id(Some(leader_id.into()), window, cx);
 5994            state.items_by_leader_view_id.insert(
 5995                id,
 5996                FollowerView {
 5997                    view: item,
 5998                    location: panel_id,
 5999                },
 6000            );
 6001
 6002            Some(())
 6003        })
 6004        .context("no follower state")?;
 6005
 6006        Ok(())
 6007    }
 6008
 6009    fn handle_agent_location_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 6010        let Some(follower_state) = self.follower_states.get_mut(&CollaboratorId::Agent) else {
 6011            return;
 6012        };
 6013
 6014        if let Some(agent_location) = self.project.read(cx).agent_location() {
 6015            let buffer_entity_id = agent_location.buffer.entity_id();
 6016            let view_id = ViewId {
 6017                creator: CollaboratorId::Agent,
 6018                id: buffer_entity_id.as_u64(),
 6019            };
 6020            follower_state.active_view_id = Some(view_id);
 6021
 6022            let item = match follower_state.items_by_leader_view_id.entry(view_id) {
 6023                hash_map::Entry::Occupied(entry) => Some(entry.into_mut()),
 6024                hash_map::Entry::Vacant(entry) => {
 6025                    let existing_view =
 6026                        follower_state
 6027                            .center_pane
 6028                            .read(cx)
 6029                            .items()
 6030                            .find_map(|item| {
 6031                                let item = item.to_followable_item_handle(cx)?;
 6032                                if item.buffer_kind(cx) == ItemBufferKind::Singleton
 6033                                    && item.project_item_model_ids(cx).as_slice()
 6034                                        == [buffer_entity_id]
 6035                                {
 6036                                    Some(item)
 6037                                } else {
 6038                                    None
 6039                                }
 6040                            });
 6041                    let view = existing_view.or_else(|| {
 6042                        agent_location.buffer.upgrade().and_then(|buffer| {
 6043                            cx.update_default_global(|registry: &mut ProjectItemRegistry, cx| {
 6044                                registry.build_item(buffer, self.project.clone(), None, window, cx)
 6045                            })?
 6046                            .to_followable_item_handle(cx)
 6047                        })
 6048                    });
 6049
 6050                    view.map(|view| {
 6051                        entry.insert(FollowerView {
 6052                            view,
 6053                            location: None,
 6054                        })
 6055                    })
 6056                }
 6057            };
 6058
 6059            if let Some(item) = item {
 6060                item.view
 6061                    .set_leader_id(Some(CollaboratorId::Agent), window, cx);
 6062                item.view
 6063                    .update_agent_location(agent_location.position, window, cx);
 6064            }
 6065        } else {
 6066            follower_state.active_view_id = None;
 6067        }
 6068
 6069        self.leader_updated(CollaboratorId::Agent, window, cx);
 6070    }
 6071
 6072    pub fn update_active_view_for_followers(&mut self, window: &mut Window, cx: &mut App) {
 6073        let mut is_project_item = true;
 6074        let mut update = proto::UpdateActiveView::default();
 6075        if window.is_window_active() {
 6076            let (active_item, panel_id) = self.active_item_for_followers(window, cx);
 6077
 6078            if let Some(item) = active_item
 6079                && item.item_focus_handle(cx).contains_focused(window, cx)
 6080            {
 6081                let leader_id = self
 6082                    .pane_for(&*item)
 6083                    .and_then(|pane| self.leader_for_pane(&pane));
 6084                let leader_peer_id = match leader_id {
 6085                    Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 6086                    Some(CollaboratorId::Agent) | None => None,
 6087                };
 6088
 6089                if let Some(item) = item.to_followable_item_handle(cx) {
 6090                    let id = item
 6091                        .remote_id(&self.app_state.client, window, cx)
 6092                        .map(|id| id.to_proto());
 6093
 6094                    if let Some(id) = id
 6095                        && let Some(variant) = item.to_state_proto(window, cx)
 6096                    {
 6097                        let view = Some(proto::View {
 6098                            id,
 6099                            leader_id: leader_peer_id,
 6100                            variant: Some(variant),
 6101                            panel_id: panel_id.map(|id| id as i32),
 6102                        });
 6103
 6104                        is_project_item = item.is_project_item(window, cx);
 6105                        update = proto::UpdateActiveView { view };
 6106                    };
 6107                }
 6108            }
 6109        }
 6110
 6111        let active_view_id = update.view.as_ref().and_then(|view| view.id.as_ref());
 6112        if active_view_id != self.last_active_view_id.as_ref() {
 6113            self.last_active_view_id = active_view_id.cloned();
 6114            self.update_followers(
 6115                is_project_item,
 6116                proto::update_followers::Variant::UpdateActiveView(update),
 6117                window,
 6118                cx,
 6119            );
 6120        }
 6121    }
 6122
 6123    fn active_item_for_followers(
 6124        &self,
 6125        window: &mut Window,
 6126        cx: &mut App,
 6127    ) -> (Option<Box<dyn ItemHandle>>, Option<proto::PanelId>) {
 6128        let mut active_item = None;
 6129        let mut panel_id = None;
 6130        for dock in self.all_docks() {
 6131            if dock.focus_handle(cx).contains_focused(window, cx)
 6132                && let Some(panel) = dock.read(cx).active_panel()
 6133                && let Some(pane) = panel.pane(cx)
 6134                && let Some(item) = pane.read(cx).active_item()
 6135            {
 6136                active_item = Some(item);
 6137                panel_id = panel.remote_id();
 6138                break;
 6139            }
 6140        }
 6141
 6142        if active_item.is_none() {
 6143            active_item = self.active_pane().read(cx).active_item();
 6144        }
 6145        (active_item, panel_id)
 6146    }
 6147
 6148    fn update_followers(
 6149        &self,
 6150        project_only: bool,
 6151        update: proto::update_followers::Variant,
 6152        _: &mut Window,
 6153        cx: &mut App,
 6154    ) -> Option<()> {
 6155        // If this update only applies to for followers in the current project,
 6156        // then skip it unless this project is shared. If it applies to all
 6157        // followers, regardless of project, then set `project_id` to none,
 6158        // indicating that it goes to all followers.
 6159        let project_id = if project_only {
 6160            Some(self.project.read(cx).remote_id()?)
 6161        } else {
 6162            None
 6163        };
 6164        self.app_state().workspace_store.update(cx, |store, cx| {
 6165            store.update_followers(project_id, update, cx)
 6166        })
 6167    }
 6168
 6169    pub fn leader_for_pane(&self, pane: &Entity<Pane>) -> Option<CollaboratorId> {
 6170        self.follower_states.iter().find_map(|(leader_id, state)| {
 6171            if state.center_pane == *pane || state.dock_pane.as_ref() == Some(pane) {
 6172                Some(*leader_id)
 6173            } else {
 6174                None
 6175            }
 6176        })
 6177    }
 6178
 6179    fn leader_updated(
 6180        &mut self,
 6181        leader_id: impl Into<CollaboratorId>,
 6182        window: &mut Window,
 6183        cx: &mut Context<Self>,
 6184    ) -> Option<Box<dyn ItemHandle>> {
 6185        cx.notify();
 6186
 6187        let leader_id = leader_id.into();
 6188        let (panel_id, item) = match leader_id {
 6189            CollaboratorId::PeerId(peer_id) => self.active_item_for_peer(peer_id, window, cx)?,
 6190            CollaboratorId::Agent => (None, self.active_item_for_agent()?),
 6191        };
 6192
 6193        let state = self.follower_states.get(&leader_id)?;
 6194        let mut transfer_focus = state.center_pane.read(cx).has_focus(window, cx);
 6195        let pane;
 6196        if let Some(panel_id) = panel_id {
 6197            pane = self
 6198                .activate_panel_for_proto_id(panel_id, window, cx)?
 6199                .pane(cx)?;
 6200            let state = self.follower_states.get_mut(&leader_id)?;
 6201            state.dock_pane = Some(pane.clone());
 6202        } else {
 6203            pane = state.center_pane.clone();
 6204            let state = self.follower_states.get_mut(&leader_id)?;
 6205            if let Some(dock_pane) = state.dock_pane.take() {
 6206                transfer_focus |= dock_pane.focus_handle(cx).contains_focused(window, cx);
 6207            }
 6208        }
 6209
 6210        pane.update(cx, |pane, cx| {
 6211            let focus_active_item = pane.has_focus(window, cx) || transfer_focus;
 6212            if let Some(index) = pane.index_for_item(item.as_ref()) {
 6213                pane.activate_item(index, false, false, window, cx);
 6214            } else {
 6215                pane.add_item(item.boxed_clone(), false, false, None, window, cx)
 6216            }
 6217
 6218            if focus_active_item {
 6219                pane.focus_active_item(window, cx)
 6220            }
 6221        });
 6222
 6223        Some(item)
 6224    }
 6225
 6226    fn active_item_for_agent(&self) -> Option<Box<dyn ItemHandle>> {
 6227        let state = self.follower_states.get(&CollaboratorId::Agent)?;
 6228        let active_view_id = state.active_view_id?;
 6229        Some(
 6230            state
 6231                .items_by_leader_view_id
 6232                .get(&active_view_id)?
 6233                .view
 6234                .boxed_clone(),
 6235        )
 6236    }
 6237
 6238    fn active_item_for_peer(
 6239        &self,
 6240        peer_id: PeerId,
 6241        window: &mut Window,
 6242        cx: &mut Context<Self>,
 6243    ) -> Option<(Option<PanelId>, Box<dyn ItemHandle>)> {
 6244        let call = self.active_call()?;
 6245        let participant = call.remote_participant_for_peer_id(peer_id, cx)?;
 6246        let leader_in_this_app;
 6247        let leader_in_this_project;
 6248        match participant.location {
 6249            ParticipantLocation::SharedProject { project_id } => {
 6250                leader_in_this_app = true;
 6251                leader_in_this_project = Some(project_id) == self.project.read(cx).remote_id();
 6252            }
 6253            ParticipantLocation::UnsharedProject => {
 6254                leader_in_this_app = true;
 6255                leader_in_this_project = false;
 6256            }
 6257            ParticipantLocation::External => {
 6258                leader_in_this_app = false;
 6259                leader_in_this_project = false;
 6260            }
 6261        };
 6262        let state = self.follower_states.get(&peer_id.into())?;
 6263        let mut item_to_activate = None;
 6264        if let (Some(active_view_id), true) = (state.active_view_id, leader_in_this_app) {
 6265            if let Some(item) = state.items_by_leader_view_id.get(&active_view_id)
 6266                && (leader_in_this_project || !item.view.is_project_item(window, cx))
 6267            {
 6268                item_to_activate = Some((item.location, item.view.boxed_clone()));
 6269            }
 6270        } else if let Some(shared_screen) =
 6271            self.shared_screen_for_peer(peer_id, &state.center_pane, window, cx)
 6272        {
 6273            item_to_activate = Some((None, Box::new(shared_screen)));
 6274        }
 6275        item_to_activate
 6276    }
 6277
 6278    fn shared_screen_for_peer(
 6279        &self,
 6280        peer_id: PeerId,
 6281        pane: &Entity<Pane>,
 6282        window: &mut Window,
 6283        cx: &mut App,
 6284    ) -> Option<Entity<SharedScreen>> {
 6285        self.active_call()?
 6286            .create_shared_screen(peer_id, pane, window, cx)
 6287    }
 6288
 6289    pub fn on_window_activation_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 6290        if window.is_window_active() {
 6291            self.update_active_view_for_followers(window, cx);
 6292
 6293            if let Some(database_id) = self.database_id {
 6294                let db = WorkspaceDb::global(cx);
 6295                cx.background_spawn(async move { db.update_timestamp(database_id).await })
 6296                    .detach();
 6297            }
 6298        } else {
 6299            for pane in &self.panes {
 6300                pane.update(cx, |pane, cx| {
 6301                    if let Some(item) = pane.active_item() {
 6302                        item.workspace_deactivated(window, cx);
 6303                    }
 6304                    for item in pane.items() {
 6305                        if matches!(
 6306                            item.workspace_settings(cx).autosave,
 6307                            AutosaveSetting::OnWindowChange | AutosaveSetting::OnFocusChange
 6308                        ) {
 6309                            Pane::autosave_item(item.as_ref(), self.project.clone(), window, cx)
 6310                                .detach_and_log_err(cx);
 6311                        }
 6312                    }
 6313                });
 6314            }
 6315        }
 6316    }
 6317
 6318    pub fn active_call(&self) -> Option<&dyn AnyActiveCall> {
 6319        self.active_call.as_ref().map(|(call, _)| &*call.0)
 6320    }
 6321
 6322    pub fn active_global_call(&self) -> Option<GlobalAnyActiveCall> {
 6323        self.active_call.as_ref().map(|(call, _)| call.clone())
 6324    }
 6325
 6326    fn on_active_call_event(
 6327        &mut self,
 6328        event: &ActiveCallEvent,
 6329        window: &mut Window,
 6330        cx: &mut Context<Self>,
 6331    ) {
 6332        match event {
 6333            ActiveCallEvent::ParticipantLocationChanged { participant_id }
 6334            | ActiveCallEvent::RemoteVideoTracksChanged { participant_id } => {
 6335                self.leader_updated(participant_id, window, cx);
 6336            }
 6337        }
 6338    }
 6339
 6340    pub fn database_id(&self) -> Option<WorkspaceId> {
 6341        self.database_id
 6342    }
 6343
 6344    #[cfg(any(test, feature = "test-support"))]
 6345    pub(crate) fn set_database_id(&mut self, id: WorkspaceId) {
 6346        self.database_id = Some(id);
 6347    }
 6348
 6349    pub fn session_id(&self) -> Option<String> {
 6350        self.session_id.clone()
 6351    }
 6352
 6353    fn save_window_bounds(&self, window: &mut Window, cx: &mut App) -> Task<()> {
 6354        let Some(display) = window.display(cx) else {
 6355            return Task::ready(());
 6356        };
 6357        let Ok(display_uuid) = display.uuid() else {
 6358            return Task::ready(());
 6359        };
 6360
 6361        let window_bounds = window.inner_window_bounds();
 6362        let database_id = self.database_id;
 6363        let has_paths = !self.root_paths(cx).is_empty();
 6364        let db = WorkspaceDb::global(cx);
 6365        let kvp = db::kvp::KeyValueStore::global(cx);
 6366
 6367        cx.background_executor().spawn(async move {
 6368            if !has_paths {
 6369                persistence::write_default_window_bounds(&kvp, window_bounds, display_uuid)
 6370                    .await
 6371                    .log_err();
 6372            }
 6373            if let Some(database_id) = database_id {
 6374                db.set_window_open_status(
 6375                    database_id,
 6376                    SerializedWindowBounds(window_bounds),
 6377                    display_uuid,
 6378                )
 6379                .await
 6380                .log_err();
 6381            } else {
 6382                persistence::write_default_window_bounds(&kvp, window_bounds, display_uuid)
 6383                    .await
 6384                    .log_err();
 6385            }
 6386        })
 6387    }
 6388
 6389    /// Bypass the 200ms serialization throttle and write workspace state to
 6390    /// the DB immediately. Returns a task the caller can await to ensure the
 6391    /// write completes. Used by the quit handler so the most recent state
 6392    /// isn't lost to a pending throttle timer when the process exits.
 6393    pub fn flush_serialization(&mut self, window: &mut Window, cx: &mut App) -> Task<()> {
 6394        self._schedule_serialize_workspace.take();
 6395        self._serialize_workspace_task.take();
 6396        self.bounds_save_task_queued.take();
 6397
 6398        let bounds_task = self.save_window_bounds(window, cx);
 6399        let serialize_task = self.serialize_workspace_internal(window, cx);
 6400        cx.spawn(async move |_| {
 6401            bounds_task.await;
 6402            serialize_task.await;
 6403        })
 6404    }
 6405
 6406    pub fn root_paths(&self, cx: &App) -> Vec<Arc<Path>> {
 6407        let project = self.project().read(cx);
 6408        project
 6409            .visible_worktrees(cx)
 6410            .map(|worktree| worktree.read(cx).abs_path())
 6411            .collect::<Vec<_>>()
 6412    }
 6413
 6414    fn remove_panes(&mut self, member: Member, window: &mut Window, cx: &mut Context<Workspace>) {
 6415        match member {
 6416            Member::Axis(PaneAxis { members, .. }) => {
 6417                for child in members.iter() {
 6418                    self.remove_panes(child.clone(), window, cx)
 6419                }
 6420            }
 6421            Member::Pane(pane) => {
 6422                self.force_remove_pane(&pane, &None, window, cx);
 6423            }
 6424        }
 6425    }
 6426
 6427    fn remove_from_session(&mut self, window: &mut Window, cx: &mut App) -> Task<()> {
 6428        self.session_id.take();
 6429        self.serialize_workspace_internal(window, cx)
 6430    }
 6431
 6432    fn force_remove_pane(
 6433        &mut self,
 6434        pane: &Entity<Pane>,
 6435        focus_on: &Option<Entity<Pane>>,
 6436        window: &mut Window,
 6437        cx: &mut Context<Workspace>,
 6438    ) {
 6439        self.panes.retain(|p| p != pane);
 6440        if let Some(focus_on) = focus_on {
 6441            focus_on.update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx));
 6442        } else if self.active_pane() == pane {
 6443            self.panes
 6444                .last()
 6445                .unwrap()
 6446                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx));
 6447        }
 6448        if self.last_active_center_pane == Some(pane.downgrade()) {
 6449            self.last_active_center_pane = None;
 6450        }
 6451        cx.notify();
 6452    }
 6453
 6454    fn serialize_workspace(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 6455        if self._schedule_serialize_workspace.is_none() {
 6456            self._schedule_serialize_workspace =
 6457                Some(cx.spawn_in(window, async move |this, cx| {
 6458                    cx.background_executor()
 6459                        .timer(SERIALIZATION_THROTTLE_TIME)
 6460                        .await;
 6461                    this.update_in(cx, |this, window, cx| {
 6462                        this._serialize_workspace_task =
 6463                            Some(this.serialize_workspace_internal(window, cx));
 6464                        this._schedule_serialize_workspace.take();
 6465                    })
 6466                    .log_err();
 6467                }));
 6468        }
 6469    }
 6470
 6471    fn serialize_workspace_internal(&self, window: &mut Window, cx: &mut App) -> Task<()> {
 6472        let Some(database_id) = self.database_id() else {
 6473            return Task::ready(());
 6474        };
 6475
 6476        fn serialize_pane_handle(
 6477            pane_handle: &Entity<Pane>,
 6478            window: &mut Window,
 6479            cx: &mut App,
 6480        ) -> SerializedPane {
 6481            let (items, active, pinned_count) = {
 6482                let pane = pane_handle.read(cx);
 6483                let active_item_id = pane.active_item().map(|item| item.item_id());
 6484                (
 6485                    pane.items()
 6486                        .filter_map(|handle| {
 6487                            let handle = handle.to_serializable_item_handle(cx)?;
 6488
 6489                            Some(SerializedItem {
 6490                                kind: Arc::from(handle.serialized_item_kind()),
 6491                                item_id: handle.item_id().as_u64(),
 6492                                active: Some(handle.item_id()) == active_item_id,
 6493                                preview: pane.is_active_preview_item(handle.item_id()),
 6494                            })
 6495                        })
 6496                        .collect::<Vec<_>>(),
 6497                    pane.has_focus(window, cx),
 6498                    pane.pinned_count(),
 6499                )
 6500            };
 6501
 6502            SerializedPane::new(items, active, pinned_count)
 6503        }
 6504
 6505        fn build_serialized_pane_group(
 6506            pane_group: &Member,
 6507            window: &mut Window,
 6508            cx: &mut App,
 6509        ) -> SerializedPaneGroup {
 6510            match pane_group {
 6511                Member::Axis(PaneAxis {
 6512                    axis,
 6513                    members,
 6514                    flexes,
 6515                    bounding_boxes: _,
 6516                }) => SerializedPaneGroup::Group {
 6517                    axis: SerializedAxis(*axis),
 6518                    children: members
 6519                        .iter()
 6520                        .map(|member| build_serialized_pane_group(member, window, cx))
 6521                        .collect::<Vec<_>>(),
 6522                    flexes: Some(flexes.lock().clone()),
 6523                },
 6524                Member::Pane(pane_handle) => {
 6525                    SerializedPaneGroup::Pane(serialize_pane_handle(pane_handle, window, cx))
 6526                }
 6527            }
 6528        }
 6529
 6530        fn build_serialized_docks(
 6531            this: &Workspace,
 6532            window: &mut Window,
 6533            cx: &mut App,
 6534        ) -> DockStructure {
 6535            this.capture_dock_state(window, cx)
 6536        }
 6537
 6538        match self.workspace_location(cx) {
 6539            WorkspaceLocation::Location(location, paths) => {
 6540                let breakpoints = self.project.update(cx, |project, cx| {
 6541                    project
 6542                        .breakpoint_store()
 6543                        .read(cx)
 6544                        .all_source_breakpoints(cx)
 6545                });
 6546                let user_toolchains = self
 6547                    .project
 6548                    .read(cx)
 6549                    .user_toolchains(cx)
 6550                    .unwrap_or_default();
 6551
 6552                let center_group = build_serialized_pane_group(&self.center.root, window, cx);
 6553                let docks = build_serialized_docks(self, window, cx);
 6554                let window_bounds = Some(SerializedWindowBounds(window.window_bounds()));
 6555
 6556                let serialized_workspace = SerializedWorkspace {
 6557                    id: database_id,
 6558                    location,
 6559                    paths,
 6560                    center_group,
 6561                    window_bounds,
 6562                    display: Default::default(),
 6563                    docks,
 6564                    centered_layout: self.centered_layout,
 6565                    session_id: self.session_id.clone(),
 6566                    breakpoints,
 6567                    window_id: Some(window.window_handle().window_id().as_u64()),
 6568                    user_toolchains,
 6569                };
 6570
 6571                let db = WorkspaceDb::global(cx);
 6572                window.spawn(cx, async move |_| {
 6573                    db.save_workspace(serialized_workspace).await;
 6574                })
 6575            }
 6576            WorkspaceLocation::DetachFromSession => {
 6577                let window_bounds = SerializedWindowBounds(window.window_bounds());
 6578                let display = window.display(cx).and_then(|d| d.uuid().ok());
 6579                // Save dock state for empty local workspaces
 6580                let docks = build_serialized_docks(self, window, cx);
 6581                let db = WorkspaceDb::global(cx);
 6582                let kvp = db::kvp::KeyValueStore::global(cx);
 6583                window.spawn(cx, async move |_| {
 6584                    db.set_window_open_status(
 6585                        database_id,
 6586                        window_bounds,
 6587                        display.unwrap_or_default(),
 6588                    )
 6589                    .await
 6590                    .log_err();
 6591                    db.set_session_id(database_id, None).await.log_err();
 6592                    persistence::write_default_dock_state(&kvp, docks)
 6593                        .await
 6594                        .log_err();
 6595                })
 6596            }
 6597            WorkspaceLocation::None => {
 6598                // Save dock state for empty non-local workspaces
 6599                let docks = build_serialized_docks(self, window, cx);
 6600                let kvp = db::kvp::KeyValueStore::global(cx);
 6601                window.spawn(cx, async move |_| {
 6602                    persistence::write_default_dock_state(&kvp, docks)
 6603                        .await
 6604                        .log_err();
 6605                })
 6606            }
 6607        }
 6608    }
 6609
 6610    fn has_any_items_open(&self, cx: &App) -> bool {
 6611        self.panes.iter().any(|pane| pane.read(cx).items_len() > 0)
 6612    }
 6613
 6614    fn workspace_location(&self, cx: &App) -> WorkspaceLocation {
 6615        let paths = PathList::new(&self.root_paths(cx));
 6616        if let Some(connection) = self.project.read(cx).remote_connection_options(cx) {
 6617            WorkspaceLocation::Location(SerializedWorkspaceLocation::Remote(connection), paths)
 6618        } else if self.project.read(cx).is_local() {
 6619            if !paths.is_empty() || self.has_any_items_open(cx) {
 6620                WorkspaceLocation::Location(SerializedWorkspaceLocation::Local, paths)
 6621            } else {
 6622                WorkspaceLocation::DetachFromSession
 6623            }
 6624        } else {
 6625            WorkspaceLocation::None
 6626        }
 6627    }
 6628
 6629    fn update_history(&self, cx: &mut App) {
 6630        let Some(id) = self.database_id() else {
 6631            return;
 6632        };
 6633        if !self.project.read(cx).is_local() {
 6634            return;
 6635        }
 6636        if let Some(manager) = HistoryManager::global(cx) {
 6637            let paths = PathList::new(&self.root_paths(cx));
 6638            manager.update(cx, |this, cx| {
 6639                this.update_history(id, HistoryManagerEntry::new(id, &paths), cx);
 6640            });
 6641        }
 6642    }
 6643
 6644    async fn serialize_items(
 6645        this: &WeakEntity<Self>,
 6646        items_rx: UnboundedReceiver<Box<dyn SerializableItemHandle>>,
 6647        cx: &mut AsyncWindowContext,
 6648    ) -> Result<()> {
 6649        const CHUNK_SIZE: usize = 200;
 6650
 6651        let mut serializable_items = items_rx.ready_chunks(CHUNK_SIZE);
 6652
 6653        while let Some(items_received) = serializable_items.next().await {
 6654            let unique_items =
 6655                items_received
 6656                    .into_iter()
 6657                    .fold(HashMap::default(), |mut acc, item| {
 6658                        acc.entry(item.item_id()).or_insert(item);
 6659                        acc
 6660                    });
 6661
 6662            // We use into_iter() here so that the references to the items are moved into
 6663            // the tasks and not kept alive while we're sleeping.
 6664            for (_, item) in unique_items.into_iter() {
 6665                if let Ok(Some(task)) = this.update_in(cx, |workspace, window, cx| {
 6666                    item.serialize(workspace, false, window, cx)
 6667                }) {
 6668                    cx.background_spawn(async move { task.await.log_err() })
 6669                        .detach();
 6670                }
 6671            }
 6672
 6673            cx.background_executor()
 6674                .timer(SERIALIZATION_THROTTLE_TIME)
 6675                .await;
 6676        }
 6677
 6678        Ok(())
 6679    }
 6680
 6681    pub(crate) fn enqueue_item_serialization(
 6682        &mut self,
 6683        item: Box<dyn SerializableItemHandle>,
 6684    ) -> Result<()> {
 6685        self.serializable_items_tx
 6686            .unbounded_send(item)
 6687            .map_err(|err| anyhow!("failed to send serializable item over channel: {err}"))
 6688    }
 6689
 6690    pub(crate) fn load_workspace(
 6691        serialized_workspace: SerializedWorkspace,
 6692        paths_to_open: Vec<Option<ProjectPath>>,
 6693        window: &mut Window,
 6694        cx: &mut Context<Workspace>,
 6695    ) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 6696        cx.spawn_in(window, async move |workspace, cx| {
 6697            let project = workspace.read_with(cx, |workspace, _| workspace.project().clone())?;
 6698
 6699            let mut center_group = None;
 6700            let mut center_items = None;
 6701
 6702            // Traverse the splits tree and add to things
 6703            if let Some((group, active_pane, items)) = serialized_workspace
 6704                .center_group
 6705                .deserialize(&project, serialized_workspace.id, workspace.clone(), cx)
 6706                .await
 6707            {
 6708                center_items = Some(items);
 6709                center_group = Some((group, active_pane))
 6710            }
 6711
 6712            let mut items_by_project_path = HashMap::default();
 6713            let mut item_ids_by_kind = HashMap::default();
 6714            let mut all_deserialized_items = Vec::default();
 6715            cx.update(|_, cx| {
 6716                for item in center_items.unwrap_or_default().into_iter().flatten() {
 6717                    if let Some(serializable_item_handle) = item.to_serializable_item_handle(cx) {
 6718                        item_ids_by_kind
 6719                            .entry(serializable_item_handle.serialized_item_kind())
 6720                            .or_insert(Vec::new())
 6721                            .push(item.item_id().as_u64() as ItemId);
 6722                    }
 6723
 6724                    if let Some(project_path) = item.project_path(cx) {
 6725                        items_by_project_path.insert(project_path, item.clone());
 6726                    }
 6727                    all_deserialized_items.push(item);
 6728                }
 6729            })?;
 6730
 6731            let opened_items = paths_to_open
 6732                .into_iter()
 6733                .map(|path_to_open| {
 6734                    path_to_open
 6735                        .and_then(|path_to_open| items_by_project_path.remove(&path_to_open))
 6736                })
 6737                .collect::<Vec<_>>();
 6738
 6739            // Remove old panes from workspace panes list
 6740            workspace.update_in(cx, |workspace, window, cx| {
 6741                if let Some((center_group, active_pane)) = center_group {
 6742                    workspace.remove_panes(workspace.center.root.clone(), window, cx);
 6743
 6744                    // Swap workspace center group
 6745                    workspace.center = PaneGroup::with_root(center_group);
 6746                    workspace.center.set_is_center(true);
 6747                    workspace.center.mark_positions(cx);
 6748
 6749                    if let Some(active_pane) = active_pane {
 6750                        workspace.set_active_pane(&active_pane, window, cx);
 6751                        cx.focus_self(window);
 6752                    } else {
 6753                        workspace.set_active_pane(&workspace.center.first_pane(), window, cx);
 6754                    }
 6755                }
 6756
 6757                let docks = serialized_workspace.docks;
 6758
 6759                for (dock, serialized_dock) in [
 6760                    (&mut workspace.right_dock, docks.right),
 6761                    (&mut workspace.left_dock, docks.left),
 6762                    (&mut workspace.bottom_dock, docks.bottom),
 6763                ]
 6764                .iter_mut()
 6765                {
 6766                    dock.update(cx, |dock, cx| {
 6767                        dock.serialized_dock = Some(serialized_dock.clone());
 6768                        dock.restore_state(window, cx);
 6769                    });
 6770                }
 6771
 6772                cx.notify();
 6773            })?;
 6774
 6775            let _ = project
 6776                .update(cx, |project, cx| {
 6777                    project
 6778                        .breakpoint_store()
 6779                        .update(cx, |breakpoint_store, cx| {
 6780                            breakpoint_store
 6781                                .with_serialized_breakpoints(serialized_workspace.breakpoints, cx)
 6782                        })
 6783                })
 6784                .await;
 6785
 6786            // Clean up all the items that have _not_ been loaded. Our ItemIds aren't stable. That means
 6787            // after loading the items, we might have different items and in order to avoid
 6788            // the database filling up, we delete items that haven't been loaded now.
 6789            //
 6790            // The items that have been loaded, have been saved after they've been added to the workspace.
 6791            let clean_up_tasks = workspace.update_in(cx, |_, window, cx| {
 6792                item_ids_by_kind
 6793                    .into_iter()
 6794                    .map(|(item_kind, loaded_items)| {
 6795                        SerializableItemRegistry::cleanup(
 6796                            item_kind,
 6797                            serialized_workspace.id,
 6798                            loaded_items,
 6799                            window,
 6800                            cx,
 6801                        )
 6802                        .log_err()
 6803                    })
 6804                    .collect::<Vec<_>>()
 6805            })?;
 6806
 6807            futures::future::join_all(clean_up_tasks).await;
 6808
 6809            workspace
 6810                .update_in(cx, |workspace, window, cx| {
 6811                    // Serialize ourself to make sure our timestamps and any pane / item changes are replicated
 6812                    workspace.serialize_workspace_internal(window, cx).detach();
 6813
 6814                    // Ensure that we mark the window as edited if we did load dirty items
 6815                    workspace.update_window_edited(window, cx);
 6816                })
 6817                .ok();
 6818
 6819            Ok(opened_items)
 6820        })
 6821    }
 6822
 6823    pub fn key_context(&self, cx: &App) -> KeyContext {
 6824        let mut context = KeyContext::new_with_defaults();
 6825        context.add("Workspace");
 6826        context.set("keyboard_layout", cx.keyboard_layout().name().to_string());
 6827        if let Some(status) = self
 6828            .debugger_provider
 6829            .as_ref()
 6830            .and_then(|provider| provider.active_thread_state(cx))
 6831        {
 6832            match status {
 6833                ThreadStatus::Running | ThreadStatus::Stepping => {
 6834                    context.add("debugger_running");
 6835                }
 6836                ThreadStatus::Stopped => context.add("debugger_stopped"),
 6837                ThreadStatus::Exited | ThreadStatus::Ended => {}
 6838            }
 6839        }
 6840
 6841        if self.left_dock.read(cx).is_open() {
 6842            if let Some(active_panel) = self.left_dock.read(cx).active_panel() {
 6843                context.set("left_dock", active_panel.panel_key());
 6844            }
 6845        }
 6846
 6847        if self.right_dock.read(cx).is_open() {
 6848            if let Some(active_panel) = self.right_dock.read(cx).active_panel() {
 6849                context.set("right_dock", active_panel.panel_key());
 6850            }
 6851        }
 6852
 6853        if self.bottom_dock.read(cx).is_open() {
 6854            if let Some(active_panel) = self.bottom_dock.read(cx).active_panel() {
 6855                context.set("bottom_dock", active_panel.panel_key());
 6856            }
 6857        }
 6858
 6859        context
 6860    }
 6861
 6862    /// Multiworkspace uses this to add workspace action handling to itself
 6863    pub fn actions(&self, div: Div, window: &mut Window, cx: &mut Context<Self>) -> Div {
 6864        self.add_workspace_actions_listeners(div, window, cx)
 6865            .on_action(cx.listener(
 6866                |_workspace, action_sequence: &settings::ActionSequence, window, cx| {
 6867                    for action in &action_sequence.0 {
 6868                        window.dispatch_action(action.boxed_clone(), cx);
 6869                    }
 6870                },
 6871            ))
 6872            .on_action(cx.listener(Self::close_inactive_items_and_panes))
 6873            .on_action(cx.listener(Self::close_all_items_and_panes))
 6874            .on_action(cx.listener(Self::close_item_in_all_panes))
 6875            .on_action(cx.listener(Self::save_all))
 6876            .on_action(cx.listener(Self::send_keystrokes))
 6877            .on_action(cx.listener(Self::add_folder_to_project))
 6878            .on_action(cx.listener(Self::follow_next_collaborator))
 6879            .on_action(cx.listener(Self::activate_pane_at_index))
 6880            .on_action(cx.listener(Self::move_item_to_pane_at_index))
 6881            .on_action(cx.listener(Self::move_focused_panel_to_next_position))
 6882            .on_action(cx.listener(Self::toggle_edit_predictions_all_files))
 6883            .on_action(cx.listener(Self::toggle_theme_mode))
 6884            .on_action(cx.listener(|workspace, _: &Unfollow, window, cx| {
 6885                let pane = workspace.active_pane().clone();
 6886                workspace.unfollow_in_pane(&pane, window, cx);
 6887            }))
 6888            .on_action(cx.listener(|workspace, action: &Save, window, cx| {
 6889                workspace
 6890                    .save_active_item(action.save_intent.unwrap_or(SaveIntent::Save), window, cx)
 6891                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 6892            }))
 6893            .on_action(cx.listener(|workspace, _: &SaveWithoutFormat, window, cx| {
 6894                workspace
 6895                    .save_active_item(SaveIntent::SaveWithoutFormat, window, cx)
 6896                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 6897            }))
 6898            .on_action(cx.listener(|workspace, _: &SaveAs, window, cx| {
 6899                workspace
 6900                    .save_active_item(SaveIntent::SaveAs, window, cx)
 6901                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 6902            }))
 6903            .on_action(
 6904                cx.listener(|workspace, _: &ActivatePreviousPane, window, cx| {
 6905                    workspace.activate_previous_pane(window, cx)
 6906                }),
 6907            )
 6908            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 6909                workspace.activate_next_pane(window, cx)
 6910            }))
 6911            .on_action(cx.listener(|workspace, _: &ActivateLastPane, window, cx| {
 6912                workspace.activate_last_pane(window, cx)
 6913            }))
 6914            .on_action(
 6915                cx.listener(|workspace, _: &ActivateNextWindow, _window, cx| {
 6916                    workspace.activate_next_window(cx)
 6917                }),
 6918            )
 6919            .on_action(
 6920                cx.listener(|workspace, _: &ActivatePreviousWindow, _window, cx| {
 6921                    workspace.activate_previous_window(cx)
 6922                }),
 6923            )
 6924            .on_action(cx.listener(|workspace, _: &ActivatePaneLeft, window, cx| {
 6925                workspace.activate_pane_in_direction(SplitDirection::Left, window, cx)
 6926            }))
 6927            .on_action(cx.listener(|workspace, _: &ActivatePaneRight, window, cx| {
 6928                workspace.activate_pane_in_direction(SplitDirection::Right, window, cx)
 6929            }))
 6930            .on_action(cx.listener(|workspace, _: &ActivatePaneUp, window, cx| {
 6931                workspace.activate_pane_in_direction(SplitDirection::Up, window, cx)
 6932            }))
 6933            .on_action(cx.listener(|workspace, _: &ActivatePaneDown, window, cx| {
 6934                workspace.activate_pane_in_direction(SplitDirection::Down, window, cx)
 6935            }))
 6936            .on_action(cx.listener(
 6937                |workspace, action: &MoveItemToPaneInDirection, window, cx| {
 6938                    workspace.move_item_to_pane_in_direction(action, window, cx)
 6939                },
 6940            ))
 6941            .on_action(cx.listener(|workspace, _: &SwapPaneLeft, _, cx| {
 6942                workspace.swap_pane_in_direction(SplitDirection::Left, cx)
 6943            }))
 6944            .on_action(cx.listener(|workspace, _: &SwapPaneRight, _, cx| {
 6945                workspace.swap_pane_in_direction(SplitDirection::Right, cx)
 6946            }))
 6947            .on_action(cx.listener(|workspace, _: &SwapPaneUp, _, cx| {
 6948                workspace.swap_pane_in_direction(SplitDirection::Up, cx)
 6949            }))
 6950            .on_action(cx.listener(|workspace, _: &SwapPaneDown, _, cx| {
 6951                workspace.swap_pane_in_direction(SplitDirection::Down, cx)
 6952            }))
 6953            .on_action(cx.listener(|workspace, _: &SwapPaneAdjacent, window, cx| {
 6954                const DIRECTION_PRIORITY: [SplitDirection; 4] = [
 6955                    SplitDirection::Down,
 6956                    SplitDirection::Up,
 6957                    SplitDirection::Right,
 6958                    SplitDirection::Left,
 6959                ];
 6960                for dir in DIRECTION_PRIORITY {
 6961                    if workspace.find_pane_in_direction(dir, cx).is_some() {
 6962                        workspace.swap_pane_in_direction(dir, cx);
 6963                        workspace.activate_pane_in_direction(dir.opposite(), window, cx);
 6964                        break;
 6965                    }
 6966                }
 6967            }))
 6968            .on_action(cx.listener(|workspace, _: &MovePaneLeft, _, cx| {
 6969                workspace.move_pane_to_border(SplitDirection::Left, cx)
 6970            }))
 6971            .on_action(cx.listener(|workspace, _: &MovePaneRight, _, cx| {
 6972                workspace.move_pane_to_border(SplitDirection::Right, cx)
 6973            }))
 6974            .on_action(cx.listener(|workspace, _: &MovePaneUp, _, cx| {
 6975                workspace.move_pane_to_border(SplitDirection::Up, cx)
 6976            }))
 6977            .on_action(cx.listener(|workspace, _: &MovePaneDown, _, cx| {
 6978                workspace.move_pane_to_border(SplitDirection::Down, cx)
 6979            }))
 6980            .on_action(cx.listener(|this, _: &ToggleLeftDock, window, cx| {
 6981                this.toggle_dock(DockPosition::Left, window, cx);
 6982            }))
 6983            .on_action(cx.listener(
 6984                |workspace: &mut Workspace, _: &ToggleRightDock, window, cx| {
 6985                    workspace.toggle_dock(DockPosition::Right, window, cx);
 6986                },
 6987            ))
 6988            .on_action(cx.listener(
 6989                |workspace: &mut Workspace, _: &ToggleBottomDock, window, cx| {
 6990                    workspace.toggle_dock(DockPosition::Bottom, window, cx);
 6991                },
 6992            ))
 6993            .on_action(cx.listener(
 6994                |workspace: &mut Workspace, _: &CloseActiveDock, window, cx| {
 6995                    if !workspace.close_active_dock(window, cx) {
 6996                        cx.propagate();
 6997                    }
 6998                },
 6999            ))
 7000            .on_action(
 7001                cx.listener(|workspace: &mut Workspace, _: &CloseAllDocks, window, cx| {
 7002                    workspace.close_all_docks(window, cx);
 7003                }),
 7004            )
 7005            .on_action(cx.listener(Self::toggle_all_docks))
 7006            .on_action(cx.listener(
 7007                |workspace: &mut Workspace, _: &ClearAllNotifications, _, cx| {
 7008                    workspace.clear_all_notifications(cx);
 7009                },
 7010            ))
 7011            .on_action(cx.listener(
 7012                |workspace: &mut Workspace, _: &ClearNavigationHistory, window, cx| {
 7013                    workspace.clear_navigation_history(window, cx);
 7014                },
 7015            ))
 7016            .on_action(cx.listener(
 7017                |workspace: &mut Workspace, _: &SuppressNotification, _, cx| {
 7018                    if let Some((notification_id, _)) = workspace.notifications.pop() {
 7019                        workspace.suppress_notification(&notification_id, cx);
 7020                    }
 7021                },
 7022            ))
 7023            .on_action(cx.listener(
 7024                |workspace: &mut Workspace, _: &ToggleWorktreeSecurity, window, cx| {
 7025                    workspace.show_worktree_trust_security_modal(true, window, cx);
 7026                },
 7027            ))
 7028            .on_action(
 7029                cx.listener(|_: &mut Workspace, _: &ClearTrustedWorktrees, _, cx| {
 7030                    if let Some(trusted_worktrees) = TrustedWorktrees::try_get_global(cx) {
 7031                        trusted_worktrees.update(cx, |trusted_worktrees, _| {
 7032                            trusted_worktrees.clear_trusted_paths()
 7033                        });
 7034                        let db = WorkspaceDb::global(cx);
 7035                        cx.spawn(async move |_, cx| {
 7036                            if db.clear_trusted_worktrees().await.log_err().is_some() {
 7037                                cx.update(|cx| reload(cx));
 7038                            }
 7039                        })
 7040                        .detach();
 7041                    }
 7042                }),
 7043            )
 7044            .on_action(cx.listener(
 7045                |workspace: &mut Workspace, _: &ReopenClosedItem, window, cx| {
 7046                    workspace.reopen_closed_item(window, cx).detach();
 7047                },
 7048            ))
 7049            .on_action(cx.listener(
 7050                |workspace: &mut Workspace, _: &ResetActiveDockSize, window, cx| {
 7051                    for dock in workspace.all_docks() {
 7052                        if dock.focus_handle(cx).contains_focused(window, cx) {
 7053                            let panel = dock.read(cx).active_panel().cloned();
 7054                            if let Some(panel) = panel {
 7055                                dock.update(cx, |dock, cx| {
 7056                                    dock.set_panel_size_state(
 7057                                        panel.as_ref(),
 7058                                        dock::PanelSizeState::default(),
 7059                                        cx,
 7060                                    );
 7061                                });
 7062                            }
 7063                            return;
 7064                        }
 7065                    }
 7066                },
 7067            ))
 7068            .on_action(cx.listener(
 7069                |workspace: &mut Workspace, _: &ResetOpenDocksSize, _window, cx| {
 7070                    for dock in workspace.all_docks() {
 7071                        let panel = dock.read(cx).visible_panel().cloned();
 7072                        if let Some(panel) = panel {
 7073                            dock.update(cx, |dock, cx| {
 7074                                dock.set_panel_size_state(
 7075                                    panel.as_ref(),
 7076                                    dock::PanelSizeState::default(),
 7077                                    cx,
 7078                                );
 7079                            });
 7080                        }
 7081                    }
 7082                },
 7083            ))
 7084            .on_action(cx.listener(
 7085                |workspace: &mut Workspace, act: &IncreaseActiveDockSize, window, cx| {
 7086                    adjust_active_dock_size_by_px(
 7087                        px_with_ui_font_fallback(act.px, cx),
 7088                        workspace,
 7089                        window,
 7090                        cx,
 7091                    );
 7092                },
 7093            ))
 7094            .on_action(cx.listener(
 7095                |workspace: &mut Workspace, act: &DecreaseActiveDockSize, window, cx| {
 7096                    adjust_active_dock_size_by_px(
 7097                        px_with_ui_font_fallback(act.px, cx) * -1.,
 7098                        workspace,
 7099                        window,
 7100                        cx,
 7101                    );
 7102                },
 7103            ))
 7104            .on_action(cx.listener(
 7105                |workspace: &mut Workspace, act: &IncreaseOpenDocksSize, window, cx| {
 7106                    adjust_open_docks_size_by_px(
 7107                        px_with_ui_font_fallback(act.px, cx),
 7108                        workspace,
 7109                        window,
 7110                        cx,
 7111                    );
 7112                },
 7113            ))
 7114            .on_action(cx.listener(
 7115                |workspace: &mut Workspace, act: &DecreaseOpenDocksSize, window, cx| {
 7116                    adjust_open_docks_size_by_px(
 7117                        px_with_ui_font_fallback(act.px, cx) * -1.,
 7118                        workspace,
 7119                        window,
 7120                        cx,
 7121                    );
 7122                },
 7123            ))
 7124            .on_action(cx.listener(Workspace::toggle_centered_layout))
 7125            .on_action(cx.listener(
 7126                |workspace: &mut Workspace, action: &pane::ActivateNextItem, window, cx| {
 7127                    if let Some(active_dock) = workspace.active_dock(window, cx) {
 7128                        let dock = active_dock.read(cx);
 7129                        if let Some(active_panel) = dock.active_panel() {
 7130                            if active_panel.pane(cx).is_none() {
 7131                                let mut recent_pane: Option<Entity<Pane>> = None;
 7132                                let mut recent_timestamp = 0;
 7133                                for pane_handle in workspace.panes() {
 7134                                    let pane = pane_handle.read(cx);
 7135                                    for entry in pane.activation_history() {
 7136                                        if entry.timestamp > recent_timestamp {
 7137                                            recent_timestamp = entry.timestamp;
 7138                                            recent_pane = Some(pane_handle.clone());
 7139                                        }
 7140                                    }
 7141                                }
 7142
 7143                                if let Some(pane) = recent_pane {
 7144                                    let wrap_around = action.wrap_around;
 7145                                    pane.update(cx, |pane, cx| {
 7146                                        let current_index = pane.active_item_index();
 7147                                        let items_len = pane.items_len();
 7148                                        if items_len > 0 {
 7149                                            let next_index = if current_index + 1 < items_len {
 7150                                                current_index + 1
 7151                                            } else if wrap_around {
 7152                                                0
 7153                                            } else {
 7154                                                return;
 7155                                            };
 7156                                            pane.activate_item(
 7157                                                next_index, false, false, window, cx,
 7158                                            );
 7159                                        }
 7160                                    });
 7161                                    return;
 7162                                }
 7163                            }
 7164                        }
 7165                    }
 7166                    cx.propagate();
 7167                },
 7168            ))
 7169            .on_action(cx.listener(
 7170                |workspace: &mut Workspace, action: &pane::ActivatePreviousItem, window, cx| {
 7171                    if let Some(active_dock) = workspace.active_dock(window, cx) {
 7172                        let dock = active_dock.read(cx);
 7173                        if let Some(active_panel) = dock.active_panel() {
 7174                            if active_panel.pane(cx).is_none() {
 7175                                let mut recent_pane: Option<Entity<Pane>> = None;
 7176                                let mut recent_timestamp = 0;
 7177                                for pane_handle in workspace.panes() {
 7178                                    let pane = pane_handle.read(cx);
 7179                                    for entry in pane.activation_history() {
 7180                                        if entry.timestamp > recent_timestamp {
 7181                                            recent_timestamp = entry.timestamp;
 7182                                            recent_pane = Some(pane_handle.clone());
 7183                                        }
 7184                                    }
 7185                                }
 7186
 7187                                if let Some(pane) = recent_pane {
 7188                                    let wrap_around = action.wrap_around;
 7189                                    pane.update(cx, |pane, cx| {
 7190                                        let current_index = pane.active_item_index();
 7191                                        let items_len = pane.items_len();
 7192                                        if items_len > 0 {
 7193                                            let prev_index = if current_index > 0 {
 7194                                                current_index - 1
 7195                                            } else if wrap_around {
 7196                                                items_len.saturating_sub(1)
 7197                                            } else {
 7198                                                return;
 7199                                            };
 7200                                            pane.activate_item(
 7201                                                prev_index, false, false, window, cx,
 7202                                            );
 7203                                        }
 7204                                    });
 7205                                    return;
 7206                                }
 7207                            }
 7208                        }
 7209                    }
 7210                    cx.propagate();
 7211                },
 7212            ))
 7213            .on_action(cx.listener(
 7214                |workspace: &mut Workspace, action: &pane::CloseActiveItem, window, cx| {
 7215                    if let Some(active_dock) = workspace.active_dock(window, cx) {
 7216                        let dock = active_dock.read(cx);
 7217                        if let Some(active_panel) = dock.active_panel() {
 7218                            if active_panel.pane(cx).is_none() {
 7219                                let active_pane = workspace.active_pane().clone();
 7220                                active_pane.update(cx, |pane, cx| {
 7221                                    pane.close_active_item(action, window, cx)
 7222                                        .detach_and_log_err(cx);
 7223                                });
 7224                                return;
 7225                            }
 7226                        }
 7227                    }
 7228                    cx.propagate();
 7229                },
 7230            ))
 7231            .on_action(
 7232                cx.listener(|workspace, _: &ToggleReadOnlyFile, window, cx| {
 7233                    let pane = workspace.active_pane().clone();
 7234                    if let Some(item) = pane.read(cx).active_item() {
 7235                        item.toggle_read_only(window, cx);
 7236                    }
 7237                }),
 7238            )
 7239            .on_action(cx.listener(|workspace, _: &FocusCenterPane, window, cx| {
 7240                workspace.focus_center_pane(window, cx);
 7241            }))
 7242            .on_action(cx.listener(Workspace::cancel))
 7243    }
 7244
 7245    #[cfg(any(test, feature = "test-support"))]
 7246    pub fn set_random_database_id(&mut self) {
 7247        self.database_id = Some(WorkspaceId(Uuid::new_v4().as_u64_pair().0 as i64));
 7248    }
 7249
 7250    #[cfg(any(test, feature = "test-support"))]
 7251    pub(crate) fn test_new(
 7252        project: Entity<Project>,
 7253        window: &mut Window,
 7254        cx: &mut Context<Self>,
 7255    ) -> Self {
 7256        use node_runtime::NodeRuntime;
 7257        use session::Session;
 7258
 7259        let client = project.read(cx).client();
 7260        let user_store = project.read(cx).user_store();
 7261        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 7262        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 7263        window.activate_window();
 7264        let app_state = Arc::new(AppState {
 7265            languages: project.read(cx).languages().clone(),
 7266            workspace_store,
 7267            client,
 7268            user_store,
 7269            fs: project.read(cx).fs().clone(),
 7270            build_window_options: |_, _| Default::default(),
 7271            node_runtime: NodeRuntime::unavailable(),
 7272            session,
 7273        });
 7274        let workspace = Self::new(Default::default(), project, app_state, window, cx);
 7275        workspace
 7276            .active_pane
 7277            .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx));
 7278        workspace
 7279    }
 7280
 7281    pub fn register_action<A: Action>(
 7282        &mut self,
 7283        callback: impl Fn(&mut Self, &A, &mut Window, &mut Context<Self>) + 'static,
 7284    ) -> &mut Self {
 7285        let callback = Arc::new(callback);
 7286
 7287        self.workspace_actions.push(Box::new(move |div, _, _, cx| {
 7288            let callback = callback.clone();
 7289            div.on_action(cx.listener(move |workspace, event, window, cx| {
 7290                (callback)(workspace, event, window, cx)
 7291            }))
 7292        }));
 7293        self
 7294    }
 7295    pub fn register_action_renderer(
 7296        &mut self,
 7297        callback: impl Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div + 'static,
 7298    ) -> &mut Self {
 7299        self.workspace_actions.push(Box::new(callback));
 7300        self
 7301    }
 7302
 7303    fn add_workspace_actions_listeners(
 7304        &self,
 7305        mut div: Div,
 7306        window: &mut Window,
 7307        cx: &mut Context<Self>,
 7308    ) -> Div {
 7309        for action in self.workspace_actions.iter() {
 7310            div = (action)(div, self, window, cx)
 7311        }
 7312        div
 7313    }
 7314
 7315    pub fn has_active_modal(&self, _: &mut Window, cx: &mut App) -> bool {
 7316        self.modal_layer.read(cx).has_active_modal()
 7317    }
 7318
 7319    pub fn is_active_modal_command_palette(&self, cx: &mut App) -> bool {
 7320        self.modal_layer
 7321            .read(cx)
 7322            .is_active_modal_command_palette(cx)
 7323    }
 7324
 7325    pub fn active_modal<V: ManagedView + 'static>(&self, cx: &App) -> Option<Entity<V>> {
 7326        self.modal_layer.read(cx).active_modal()
 7327    }
 7328
 7329    /// Toggles a modal of type `V`. If a modal of the same type is currently active,
 7330    /// it will be hidden. If a different modal is active, it will be replaced with the new one.
 7331    /// If no modal is active, the new modal will be shown.
 7332    ///
 7333    /// If closing the current modal fails (e.g., due to `on_before_dismiss` returning
 7334    /// `DismissDecision::Dismiss(false)` or `DismissDecision::Pending`), the new modal
 7335    /// will not be shown.
 7336    pub fn toggle_modal<V: ModalView, B>(&mut self, window: &mut Window, cx: &mut App, build: B)
 7337    where
 7338        B: FnOnce(&mut Window, &mut Context<V>) -> V,
 7339    {
 7340        self.modal_layer.update(cx, |modal_layer, cx| {
 7341            modal_layer.toggle_modal(window, cx, build)
 7342        })
 7343    }
 7344
 7345    pub fn hide_modal(&mut self, window: &mut Window, cx: &mut App) -> bool {
 7346        self.modal_layer
 7347            .update(cx, |modal_layer, cx| modal_layer.hide_modal(window, cx))
 7348    }
 7349
 7350    pub fn toggle_status_toast<V: ToastView>(&mut self, entity: Entity<V>, cx: &mut App) {
 7351        self.toast_layer
 7352            .update(cx, |toast_layer, cx| toast_layer.toggle_toast(cx, entity))
 7353    }
 7354
 7355    pub fn toggle_centered_layout(
 7356        &mut self,
 7357        _: &ToggleCenteredLayout,
 7358        _: &mut Window,
 7359        cx: &mut Context<Self>,
 7360    ) {
 7361        self.centered_layout = !self.centered_layout;
 7362        if let Some(database_id) = self.database_id() {
 7363            let db = WorkspaceDb::global(cx);
 7364            let centered_layout = self.centered_layout;
 7365            cx.background_spawn(async move {
 7366                db.set_centered_layout(database_id, centered_layout).await
 7367            })
 7368            .detach_and_log_err(cx);
 7369        }
 7370        cx.notify();
 7371    }
 7372
 7373    fn adjust_padding(padding: Option<f32>) -> f32 {
 7374        padding
 7375            .unwrap_or(CenteredPaddingSettings::default().0)
 7376            .clamp(
 7377                CenteredPaddingSettings::MIN_PADDING,
 7378                CenteredPaddingSettings::MAX_PADDING,
 7379            )
 7380    }
 7381
 7382    fn render_dock(
 7383        &self,
 7384        position: DockPosition,
 7385        dock: &Entity<Dock>,
 7386        window: &mut Window,
 7387        cx: &mut App,
 7388    ) -> Option<Div> {
 7389        if self.zoomed_position == Some(position) {
 7390            return None;
 7391        }
 7392
 7393        let leader_border = dock.read(cx).active_panel().and_then(|panel| {
 7394            let pane = panel.pane(cx)?;
 7395            let follower_states = &self.follower_states;
 7396            leader_border_for_pane(follower_states, &pane, window, cx)
 7397        });
 7398
 7399        let mut container = div()
 7400            .flex()
 7401            .overflow_hidden()
 7402            .flex_none()
 7403            .child(dock.clone())
 7404            .children(leader_border);
 7405
 7406        // Apply sizing only when the dock is open. When closed the dock is still
 7407        // included in the element tree so its focus handle remains mounted — without
 7408        // this, toggle_panel_focus cannot focus the panel when the dock is closed.
 7409        let dock = dock.read(cx);
 7410        if let Some(panel) = dock.visible_panel() {
 7411            let size_state = dock.stored_panel_size_state(panel.as_ref());
 7412            if position.axis() == Axis::Horizontal {
 7413                let use_flexible = panel.has_flexible_size(window, cx);
 7414                let flex_grow = if use_flexible {
 7415                    size_state
 7416                        .and_then(|state| state.flex)
 7417                        .or_else(|| self.default_dock_flex(position))
 7418                } else {
 7419                    None
 7420                };
 7421                if let Some(grow) = flex_grow {
 7422                    let grow = grow.max(0.001);
 7423                    let style = container.style();
 7424                    style.flex_grow = Some(grow);
 7425                    style.flex_shrink = Some(1.0);
 7426                    style.flex_basis = Some(relative(0.).into());
 7427                } else {
 7428                    let size = size_state
 7429                        .and_then(|state| state.size)
 7430                        .unwrap_or_else(|| panel.default_size(window, cx));
 7431                    container = container.w(size);
 7432                }
 7433            } else {
 7434                let size = size_state
 7435                    .and_then(|state| state.size)
 7436                    .unwrap_or_else(|| panel.default_size(window, cx));
 7437                container = container.h(size);
 7438            }
 7439        }
 7440
 7441        Some(container)
 7442    }
 7443
 7444    pub fn for_window(window: &Window, cx: &App) -> Option<Entity<Workspace>> {
 7445        window
 7446            .root::<MultiWorkspace>()
 7447            .flatten()
 7448            .map(|multi_workspace| multi_workspace.read(cx).workspace().clone())
 7449    }
 7450
 7451    pub fn zoomed_item(&self) -> Option<&AnyWeakView> {
 7452        self.zoomed.as_ref()
 7453    }
 7454
 7455    pub fn activate_next_window(&mut self, cx: &mut Context<Self>) {
 7456        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 7457            return;
 7458        };
 7459        let windows = cx.windows();
 7460        let next_window =
 7461            SystemWindowTabController::get_next_tab_group_window(cx, current_window_id).or_else(
 7462                || {
 7463                    windows
 7464                        .iter()
 7465                        .cycle()
 7466                        .skip_while(|window| window.window_id() != current_window_id)
 7467                        .nth(1)
 7468                },
 7469            );
 7470
 7471        if let Some(window) = next_window {
 7472            window
 7473                .update(cx, |_, window, _| window.activate_window())
 7474                .ok();
 7475        }
 7476    }
 7477
 7478    pub fn activate_previous_window(&mut self, cx: &mut Context<Self>) {
 7479        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 7480            return;
 7481        };
 7482        let windows = cx.windows();
 7483        let prev_window =
 7484            SystemWindowTabController::get_prev_tab_group_window(cx, current_window_id).or_else(
 7485                || {
 7486                    windows
 7487                        .iter()
 7488                        .rev()
 7489                        .cycle()
 7490                        .skip_while(|window| window.window_id() != current_window_id)
 7491                        .nth(1)
 7492                },
 7493            );
 7494
 7495        if let Some(window) = prev_window {
 7496            window
 7497                .update(cx, |_, window, _| window.activate_window())
 7498                .ok();
 7499        }
 7500    }
 7501
 7502    pub fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
 7503        if cx.stop_active_drag(window) {
 7504        } else if let Some((notification_id, _)) = self.notifications.pop() {
 7505            dismiss_app_notification(&notification_id, cx);
 7506        } else {
 7507            cx.propagate();
 7508        }
 7509    }
 7510
 7511    fn resize_dock(
 7512        &mut self,
 7513        dock_pos: DockPosition,
 7514        new_size: Pixels,
 7515        window: &mut Window,
 7516        cx: &mut Context<Self>,
 7517    ) {
 7518        match dock_pos {
 7519            DockPosition::Left => self.resize_left_dock(new_size, window, cx),
 7520            DockPosition::Right => self.resize_right_dock(new_size, window, cx),
 7521            DockPosition::Bottom => self.resize_bottom_dock(new_size, window, cx),
 7522        }
 7523    }
 7524
 7525    fn resize_left_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 7526        let workspace_width = self.bounds.size.width;
 7527        let mut size = new_size.min(workspace_width - RESIZE_HANDLE_SIZE);
 7528
 7529        self.right_dock.read_with(cx, |right_dock, cx| {
 7530            let right_dock_size = right_dock
 7531                .stored_active_panel_size(window, cx)
 7532                .unwrap_or(Pixels::ZERO);
 7533            if right_dock_size + size > workspace_width {
 7534                size = workspace_width - right_dock_size
 7535            }
 7536        });
 7537
 7538        let flex_grow = self.dock_flex_for_size(DockPosition::Left, size, window, cx);
 7539        self.left_dock.update(cx, |left_dock, cx| {
 7540            if WorkspaceSettings::get_global(cx)
 7541                .resize_all_panels_in_dock
 7542                .contains(&DockPosition::Left)
 7543            {
 7544                left_dock.resize_all_panels(Some(size), flex_grow, window, cx);
 7545            } else {
 7546                left_dock.resize_active_panel(Some(size), flex_grow, window, cx);
 7547            }
 7548        });
 7549    }
 7550
 7551    fn resize_right_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 7552        let workspace_width = self.bounds.size.width;
 7553        let mut size = new_size.min(workspace_width - RESIZE_HANDLE_SIZE);
 7554        self.left_dock.read_with(cx, |left_dock, cx| {
 7555            let left_dock_size = left_dock
 7556                .stored_active_panel_size(window, cx)
 7557                .unwrap_or(Pixels::ZERO);
 7558            if left_dock_size + size > workspace_width {
 7559                size = workspace_width - left_dock_size
 7560            }
 7561        });
 7562        let flex_grow = self.dock_flex_for_size(DockPosition::Right, size, window, cx);
 7563        self.right_dock.update(cx, |right_dock, cx| {
 7564            if WorkspaceSettings::get_global(cx)
 7565                .resize_all_panels_in_dock
 7566                .contains(&DockPosition::Right)
 7567            {
 7568                right_dock.resize_all_panels(Some(size), flex_grow, window, cx);
 7569            } else {
 7570                right_dock.resize_active_panel(Some(size), flex_grow, window, cx);
 7571            }
 7572        });
 7573    }
 7574
 7575    fn resize_bottom_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 7576        let size = new_size.min(self.bounds.bottom() - RESIZE_HANDLE_SIZE - self.bounds.top());
 7577        self.bottom_dock.update(cx, |bottom_dock, cx| {
 7578            if WorkspaceSettings::get_global(cx)
 7579                .resize_all_panels_in_dock
 7580                .contains(&DockPosition::Bottom)
 7581            {
 7582                bottom_dock.resize_all_panels(Some(size), None, window, cx);
 7583            } else {
 7584                bottom_dock.resize_active_panel(Some(size), None, window, cx);
 7585            }
 7586        });
 7587    }
 7588
 7589    fn toggle_edit_predictions_all_files(
 7590        &mut self,
 7591        _: &ToggleEditPrediction,
 7592        _window: &mut Window,
 7593        cx: &mut Context<Self>,
 7594    ) {
 7595        let fs = self.project().read(cx).fs().clone();
 7596        let show_edit_predictions = all_language_settings(None, cx).show_edit_predictions(None, cx);
 7597        update_settings_file(fs, cx, move |file, _| {
 7598            file.project.all_languages.defaults.show_edit_predictions = Some(!show_edit_predictions)
 7599        });
 7600    }
 7601
 7602    fn toggle_theme_mode(&mut self, _: &ToggleMode, _window: &mut Window, cx: &mut Context<Self>) {
 7603        let current_mode = ThemeSettings::get_global(cx).theme.mode();
 7604        let next_mode = match current_mode {
 7605            Some(theme_settings::ThemeAppearanceMode::Light) => {
 7606                theme_settings::ThemeAppearanceMode::Dark
 7607            }
 7608            Some(theme_settings::ThemeAppearanceMode::Dark) => {
 7609                theme_settings::ThemeAppearanceMode::Light
 7610            }
 7611            Some(theme_settings::ThemeAppearanceMode::System) | None => {
 7612                match cx.theme().appearance() {
 7613                    theme::Appearance::Light => theme_settings::ThemeAppearanceMode::Dark,
 7614                    theme::Appearance::Dark => theme_settings::ThemeAppearanceMode::Light,
 7615                }
 7616            }
 7617        };
 7618
 7619        let fs = self.project().read(cx).fs().clone();
 7620        settings::update_settings_file(fs, cx, move |settings, _cx| {
 7621            theme_settings::set_mode(settings, next_mode);
 7622        });
 7623    }
 7624
 7625    pub fn show_worktree_trust_security_modal(
 7626        &mut self,
 7627        toggle: bool,
 7628        window: &mut Window,
 7629        cx: &mut Context<Self>,
 7630    ) {
 7631        if let Some(security_modal) = self.active_modal::<SecurityModal>(cx) {
 7632            if toggle {
 7633                security_modal.update(cx, |security_modal, cx| {
 7634                    security_modal.dismiss(cx);
 7635                })
 7636            } else {
 7637                security_modal.update(cx, |security_modal, cx| {
 7638                    security_modal.refresh_restricted_paths(cx);
 7639                });
 7640            }
 7641        } else {
 7642            let has_restricted_worktrees = TrustedWorktrees::try_get_global(cx)
 7643                .map(|trusted_worktrees| {
 7644                    trusted_worktrees
 7645                        .read(cx)
 7646                        .has_restricted_worktrees(&self.project().read(cx).worktree_store(), cx)
 7647                })
 7648                .unwrap_or(false);
 7649            if has_restricted_worktrees {
 7650                let project = self.project().read(cx);
 7651                let remote_host = project
 7652                    .remote_connection_options(cx)
 7653                    .map(RemoteHostLocation::from);
 7654                let worktree_store = project.worktree_store().downgrade();
 7655                self.toggle_modal(window, cx, |_, cx| {
 7656                    SecurityModal::new(worktree_store, remote_host, cx)
 7657                });
 7658            }
 7659        }
 7660    }
 7661}
 7662
 7663pub trait AnyActiveCall {
 7664    fn entity(&self) -> AnyEntity;
 7665    fn is_in_room(&self, _: &App) -> bool;
 7666    fn room_id(&self, _: &App) -> Option<u64>;
 7667    fn channel_id(&self, _: &App) -> Option<ChannelId>;
 7668    fn hang_up(&self, _: &mut App) -> Task<Result<()>>;
 7669    fn unshare_project(&self, _: Entity<Project>, _: &mut App) -> Result<()>;
 7670    fn remote_participant_for_peer_id(&self, _: PeerId, _: &App) -> Option<RemoteCollaborator>;
 7671    fn is_sharing_project(&self, _: &App) -> bool;
 7672    fn has_remote_participants(&self, _: &App) -> bool;
 7673    fn local_participant_is_guest(&self, _: &App) -> bool;
 7674    fn client(&self, _: &App) -> Arc<Client>;
 7675    fn share_on_join(&self, _: &App) -> bool;
 7676    fn join_channel(&self, _: ChannelId, _: &mut App) -> Task<Result<bool>>;
 7677    fn room_update_completed(&self, _: &mut App) -> Task<()>;
 7678    fn most_active_project(&self, _: &App) -> Option<(u64, u64)>;
 7679    fn share_project(&self, _: Entity<Project>, _: &mut App) -> Task<Result<u64>>;
 7680    fn join_project(
 7681        &self,
 7682        _: u64,
 7683        _: Arc<LanguageRegistry>,
 7684        _: Arc<dyn Fs>,
 7685        _: &mut App,
 7686    ) -> Task<Result<Entity<Project>>>;
 7687    fn peer_id_for_user_in_room(&self, _: u64, _: &App) -> Option<PeerId>;
 7688    fn subscribe(
 7689        &self,
 7690        _: &mut Window,
 7691        _: &mut Context<Workspace>,
 7692        _: Box<dyn Fn(&mut Workspace, &ActiveCallEvent, &mut Window, &mut Context<Workspace>)>,
 7693    ) -> Subscription;
 7694    fn create_shared_screen(
 7695        &self,
 7696        _: PeerId,
 7697        _: &Entity<Pane>,
 7698        _: &mut Window,
 7699        _: &mut App,
 7700    ) -> Option<Entity<SharedScreen>>;
 7701}
 7702
 7703#[derive(Clone)]
 7704pub struct GlobalAnyActiveCall(pub Arc<dyn AnyActiveCall>);
 7705impl Global for GlobalAnyActiveCall {}
 7706
 7707impl GlobalAnyActiveCall {
 7708    pub(crate) fn try_global(cx: &App) -> Option<&Self> {
 7709        cx.try_global()
 7710    }
 7711
 7712    pub(crate) fn global(cx: &App) -> &Self {
 7713        cx.global()
 7714    }
 7715}
 7716
 7717/// Workspace-local view of a remote participant's location.
 7718#[derive(Clone, Copy, Debug, PartialEq, Eq)]
 7719pub enum ParticipantLocation {
 7720    SharedProject { project_id: u64 },
 7721    UnsharedProject,
 7722    External,
 7723}
 7724
 7725impl ParticipantLocation {
 7726    pub fn from_proto(location: Option<proto::ParticipantLocation>) -> Result<Self> {
 7727        match location
 7728            .and_then(|l| l.variant)
 7729            .context("participant location was not provided")?
 7730        {
 7731            proto::participant_location::Variant::SharedProject(project) => {
 7732                Ok(Self::SharedProject {
 7733                    project_id: project.id,
 7734                })
 7735            }
 7736            proto::participant_location::Variant::UnsharedProject(_) => Ok(Self::UnsharedProject),
 7737            proto::participant_location::Variant::External(_) => Ok(Self::External),
 7738        }
 7739    }
 7740}
 7741/// Workspace-local view of a remote collaborator's state.
 7742/// This is the subset of `call::RemoteParticipant` that workspace needs.
 7743#[derive(Clone)]
 7744pub struct RemoteCollaborator {
 7745    pub user: Arc<User>,
 7746    pub peer_id: PeerId,
 7747    pub location: ParticipantLocation,
 7748    pub participant_index: ParticipantIndex,
 7749}
 7750
 7751pub enum ActiveCallEvent {
 7752    ParticipantLocationChanged { participant_id: PeerId },
 7753    RemoteVideoTracksChanged { participant_id: PeerId },
 7754}
 7755
 7756fn leader_border_for_pane(
 7757    follower_states: &HashMap<CollaboratorId, FollowerState>,
 7758    pane: &Entity<Pane>,
 7759    _: &Window,
 7760    cx: &App,
 7761) -> Option<Div> {
 7762    let (leader_id, _follower_state) = follower_states.iter().find_map(|(leader_id, state)| {
 7763        if state.pane() == pane {
 7764            Some((*leader_id, state))
 7765        } else {
 7766            None
 7767        }
 7768    })?;
 7769
 7770    let mut leader_color = match leader_id {
 7771        CollaboratorId::PeerId(leader_peer_id) => {
 7772            let leader = GlobalAnyActiveCall::try_global(cx)?
 7773                .0
 7774                .remote_participant_for_peer_id(leader_peer_id, cx)?;
 7775
 7776            cx.theme()
 7777                .players()
 7778                .color_for_participant(leader.participant_index.0)
 7779                .cursor
 7780        }
 7781        CollaboratorId::Agent => cx.theme().players().agent().cursor,
 7782    };
 7783    leader_color.fade_out(0.3);
 7784    Some(
 7785        div()
 7786            .absolute()
 7787            .size_full()
 7788            .left_0()
 7789            .top_0()
 7790            .border_2()
 7791            .border_color(leader_color),
 7792    )
 7793}
 7794
 7795fn window_bounds_env_override() -> Option<Bounds<Pixels>> {
 7796    ZED_WINDOW_POSITION
 7797        .zip(*ZED_WINDOW_SIZE)
 7798        .map(|(position, size)| Bounds {
 7799            origin: position,
 7800            size,
 7801        })
 7802}
 7803
 7804fn open_items(
 7805    serialized_workspace: Option<SerializedWorkspace>,
 7806    mut project_paths_to_open: Vec<(PathBuf, Option<ProjectPath>)>,
 7807    window: &mut Window,
 7808    cx: &mut Context<Workspace>,
 7809) -> impl 'static + Future<Output = Result<Vec<Option<Result<Box<dyn ItemHandle>>>>>> + use<> {
 7810    let restored_items = serialized_workspace.map(|serialized_workspace| {
 7811        Workspace::load_workspace(
 7812            serialized_workspace,
 7813            project_paths_to_open
 7814                .iter()
 7815                .map(|(_, project_path)| project_path)
 7816                .cloned()
 7817                .collect(),
 7818            window,
 7819            cx,
 7820        )
 7821    });
 7822
 7823    cx.spawn_in(window, async move |workspace, cx| {
 7824        let mut opened_items = Vec::with_capacity(project_paths_to_open.len());
 7825
 7826        if let Some(restored_items) = restored_items {
 7827            let restored_items = restored_items.await?;
 7828
 7829            let restored_project_paths = restored_items
 7830                .iter()
 7831                .filter_map(|item| {
 7832                    cx.update(|_, cx| item.as_ref()?.project_path(cx))
 7833                        .ok()
 7834                        .flatten()
 7835                })
 7836                .collect::<HashSet<_>>();
 7837
 7838            for restored_item in restored_items {
 7839                opened_items.push(restored_item.map(Ok));
 7840            }
 7841
 7842            project_paths_to_open
 7843                .iter_mut()
 7844                .for_each(|(_, project_path)| {
 7845                    if let Some(project_path_to_open) = project_path
 7846                        && restored_project_paths.contains(project_path_to_open)
 7847                    {
 7848                        *project_path = None;
 7849                    }
 7850                });
 7851        } else {
 7852            for _ in 0..project_paths_to_open.len() {
 7853                opened_items.push(None);
 7854            }
 7855        }
 7856        assert!(opened_items.len() == project_paths_to_open.len());
 7857
 7858        let tasks =
 7859            project_paths_to_open
 7860                .into_iter()
 7861                .enumerate()
 7862                .map(|(ix, (abs_path, project_path))| {
 7863                    let workspace = workspace.clone();
 7864                    cx.spawn(async move |cx| {
 7865                        let file_project_path = project_path?;
 7866                        let abs_path_task = workspace.update(cx, |workspace, cx| {
 7867                            workspace.project().update(cx, |project, cx| {
 7868                                project.resolve_abs_path(abs_path.to_string_lossy().as_ref(), cx)
 7869                            })
 7870                        });
 7871
 7872                        // We only want to open file paths here. If one of the items
 7873                        // here is a directory, it was already opened further above
 7874                        // with a `find_or_create_worktree`.
 7875                        if let Ok(task) = abs_path_task
 7876                            && task.await.is_none_or(|p| p.is_file())
 7877                        {
 7878                            return Some((
 7879                                ix,
 7880                                workspace
 7881                                    .update_in(cx, |workspace, window, cx| {
 7882                                        workspace.open_path(
 7883                                            file_project_path,
 7884                                            None,
 7885                                            true,
 7886                                            window,
 7887                                            cx,
 7888                                        )
 7889                                    })
 7890                                    .log_err()?
 7891                                    .await,
 7892                            ));
 7893                        }
 7894                        None
 7895                    })
 7896                });
 7897
 7898        let tasks = tasks.collect::<Vec<_>>();
 7899
 7900        let tasks = futures::future::join_all(tasks);
 7901        for (ix, path_open_result) in tasks.await.into_iter().flatten() {
 7902            opened_items[ix] = Some(path_open_result);
 7903        }
 7904
 7905        Ok(opened_items)
 7906    })
 7907}
 7908
 7909#[derive(Clone)]
 7910enum ActivateInDirectionTarget {
 7911    Pane(Entity<Pane>),
 7912    Dock(Entity<Dock>),
 7913    Sidebar(FocusHandle),
 7914}
 7915
 7916fn notify_if_database_failed(window: WindowHandle<MultiWorkspace>, cx: &mut AsyncApp) {
 7917    window
 7918        .update(cx, |multi_workspace, _, cx| {
 7919            let workspace = multi_workspace.workspace().clone();
 7920            workspace.update(cx, |workspace, cx| {
 7921                if (*db::ALL_FILE_DB_FAILED).load(std::sync::atomic::Ordering::Acquire) {
 7922                    struct DatabaseFailedNotification;
 7923
 7924                    workspace.show_notification(
 7925                        NotificationId::unique::<DatabaseFailedNotification>(),
 7926                        cx,
 7927                        |cx| {
 7928                            cx.new(|cx| {
 7929                                MessageNotification::new("Failed to load the database file.", cx)
 7930                                    .primary_message("File an Issue")
 7931                                    .primary_icon(IconName::Plus)
 7932                                    .primary_on_click(|window, cx| {
 7933                                        window.dispatch_action(Box::new(FileBugReport), cx)
 7934                                    })
 7935                            })
 7936                        },
 7937                    );
 7938                }
 7939            });
 7940        })
 7941        .log_err();
 7942}
 7943
 7944fn px_with_ui_font_fallback(val: u32, cx: &Context<Workspace>) -> Pixels {
 7945    if val == 0 {
 7946        ThemeSettings::get_global(cx).ui_font_size(cx)
 7947    } else {
 7948        px(val as f32)
 7949    }
 7950}
 7951
 7952fn adjust_active_dock_size_by_px(
 7953    px: Pixels,
 7954    workspace: &mut Workspace,
 7955    window: &mut Window,
 7956    cx: &mut Context<Workspace>,
 7957) {
 7958    let Some(active_dock) = workspace
 7959        .all_docks()
 7960        .into_iter()
 7961        .find(|dock| dock.focus_handle(cx).contains_focused(window, cx))
 7962    else {
 7963        return;
 7964    };
 7965    let dock = active_dock.read(cx);
 7966    let Some(panel_size) = workspace.dock_size(&dock, window, cx) else {
 7967        return;
 7968    };
 7969    workspace.resize_dock(dock.position(), panel_size + px, window, cx);
 7970}
 7971
 7972fn adjust_open_docks_size_by_px(
 7973    px: Pixels,
 7974    workspace: &mut Workspace,
 7975    window: &mut Window,
 7976    cx: &mut Context<Workspace>,
 7977) {
 7978    let docks = workspace
 7979        .all_docks()
 7980        .into_iter()
 7981        .filter_map(|dock_entity| {
 7982            let dock = dock_entity.read(cx);
 7983            if dock.is_open() {
 7984                let dock_pos = dock.position();
 7985                let panel_size = workspace.dock_size(&dock, window, cx)?;
 7986                Some((dock_pos, panel_size + px))
 7987            } else {
 7988                None
 7989            }
 7990        })
 7991        .collect::<Vec<_>>();
 7992
 7993    for (position, new_size) in docks {
 7994        workspace.resize_dock(position, new_size, window, cx);
 7995    }
 7996}
 7997
 7998impl Focusable for Workspace {
 7999    fn focus_handle(&self, cx: &App) -> FocusHandle {
 8000        self.active_pane.focus_handle(cx)
 8001    }
 8002}
 8003
 8004#[derive(Clone)]
 8005struct DraggedDock(DockPosition);
 8006
 8007impl Render for DraggedDock {
 8008    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
 8009        gpui::Empty
 8010    }
 8011}
 8012
 8013impl Render for Workspace {
 8014    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 8015        static FIRST_PAINT: AtomicBool = AtomicBool::new(true);
 8016        if FIRST_PAINT.swap(false, std::sync::atomic::Ordering::Relaxed) {
 8017            log::info!("Rendered first frame");
 8018        }
 8019
 8020        let centered_layout = self.centered_layout
 8021            && self.center.panes().len() == 1
 8022            && self.active_item(cx).is_some();
 8023        let render_padding = |size| {
 8024            (size > 0.0).then(|| {
 8025                div()
 8026                    .h_full()
 8027                    .w(relative(size))
 8028                    .bg(cx.theme().colors().editor_background)
 8029                    .border_color(cx.theme().colors().pane_group_border)
 8030            })
 8031        };
 8032        let paddings = if centered_layout {
 8033            let settings = WorkspaceSettings::get_global(cx).centered_layout;
 8034            (
 8035                render_padding(Self::adjust_padding(
 8036                    settings.left_padding.map(|padding| padding.0),
 8037                )),
 8038                render_padding(Self::adjust_padding(
 8039                    settings.right_padding.map(|padding| padding.0),
 8040                )),
 8041            )
 8042        } else {
 8043            (None, None)
 8044        };
 8045        let ui_font = theme_settings::setup_ui_font(window, cx);
 8046
 8047        let theme = cx.theme().clone();
 8048        let colors = theme.colors();
 8049        let notification_entities = self
 8050            .notifications
 8051            .iter()
 8052            .map(|(_, notification)| notification.entity_id())
 8053            .collect::<Vec<_>>();
 8054        let bottom_dock_layout = WorkspaceSettings::get_global(cx).bottom_dock_layout;
 8055
 8056        div()
 8057            .relative()
 8058            .size_full()
 8059            .flex()
 8060            .flex_col()
 8061            .font(ui_font)
 8062            .gap_0()
 8063                .justify_start()
 8064                .items_start()
 8065                .text_color(colors.text)
 8066                .overflow_hidden()
 8067                .children(self.titlebar_item.clone())
 8068                .on_modifiers_changed(move |_, _, cx| {
 8069                    for &id in &notification_entities {
 8070                        cx.notify(id);
 8071                    }
 8072                })
 8073                .child(
 8074                    div()
 8075                        .size_full()
 8076                        .relative()
 8077                        .flex_1()
 8078                        .flex()
 8079                        .flex_col()
 8080                        .child(
 8081                            div()
 8082                                .id("workspace")
 8083                                .bg(colors.background)
 8084                                .relative()
 8085                                .flex_1()
 8086                                .w_full()
 8087                                .flex()
 8088                                .flex_col()
 8089                                .overflow_hidden()
 8090                                .border_t_1()
 8091                                .border_b_1()
 8092                                .border_color(colors.border)
 8093                                .child({
 8094                                    let this = cx.entity();
 8095                                    canvas(
 8096                                        move |bounds, window, cx| {
 8097                                            this.update(cx, |this, cx| {
 8098                                                let bounds_changed = this.bounds != bounds;
 8099                                                this.bounds = bounds;
 8100
 8101                                                if bounds_changed {
 8102                                                    this.left_dock.update(cx, |dock, cx| {
 8103                                                        dock.clamp_panel_size(
 8104                                                            bounds.size.width,
 8105                                                            window,
 8106                                                            cx,
 8107                                                        )
 8108                                                    });
 8109
 8110                                                    this.right_dock.update(cx, |dock, cx| {
 8111                                                        dock.clamp_panel_size(
 8112                                                            bounds.size.width,
 8113                                                            window,
 8114                                                            cx,
 8115                                                        )
 8116                                                    });
 8117
 8118                                                    this.bottom_dock.update(cx, |dock, cx| {
 8119                                                        dock.clamp_panel_size(
 8120                                                            bounds.size.height,
 8121                                                            window,
 8122                                                            cx,
 8123                                                        )
 8124                                                    });
 8125                                                }
 8126                                            })
 8127                                        },
 8128                                        |_, _, _, _| {},
 8129                                    )
 8130                                    .absolute()
 8131                                    .size_full()
 8132                                })
 8133                                .when(self.zoomed.is_none(), |this| {
 8134                                    this.on_drag_move(cx.listener(
 8135                                        move |workspace,
 8136                                              e: &DragMoveEvent<DraggedDock>,
 8137                                              window,
 8138                                              cx| {
 8139                                            if workspace.previous_dock_drag_coordinates
 8140                                                != Some(e.event.position)
 8141                                            {
 8142                                                workspace.previous_dock_drag_coordinates =
 8143                                                    Some(e.event.position);
 8144
 8145                                                match e.drag(cx).0 {
 8146                                                    DockPosition::Left => {
 8147                                                        workspace.resize_left_dock(
 8148                                                            e.event.position.x
 8149                                                                - workspace.bounds.left(),
 8150                                                            window,
 8151                                                            cx,
 8152                                                        );
 8153                                                    }
 8154                                                    DockPosition::Right => {
 8155                                                        workspace.resize_right_dock(
 8156                                                            workspace.bounds.right()
 8157                                                                - e.event.position.x,
 8158                                                            window,
 8159                                                            cx,
 8160                                                        );
 8161                                                    }
 8162                                                    DockPosition::Bottom => {
 8163                                                        workspace.resize_bottom_dock(
 8164                                                            workspace.bounds.bottom()
 8165                                                                - e.event.position.y,
 8166                                                            window,
 8167                                                            cx,
 8168                                                        );
 8169                                                    }
 8170                                                };
 8171                                                workspace.serialize_workspace(window, cx);
 8172                                            }
 8173                                        },
 8174                                    ))
 8175
 8176                                })
 8177                                .child({
 8178                                    match bottom_dock_layout {
 8179                                        BottomDockLayout::Full => div()
 8180                                            .flex()
 8181                                            .flex_col()
 8182                                            .h_full()
 8183                                            .child(
 8184                                                div()
 8185                                                    .flex()
 8186                                                    .flex_row()
 8187                                                    .flex_1()
 8188                                                    .overflow_hidden()
 8189                                                    .children(self.render_dock(
 8190                                                        DockPosition::Left,
 8191                                                        &self.left_dock,
 8192                                                        window,
 8193                                                        cx,
 8194                                                    ))
 8195
 8196                                                    .child(
 8197                                                        div()
 8198                                                            .flex()
 8199                                                            .flex_col()
 8200                                                            .flex_1()
 8201                                                            .overflow_hidden()
 8202                                                            .child(
 8203                                                                h_flex()
 8204                                                                    .flex_1()
 8205                                                                    .when_some(
 8206                                                                        paddings.0,
 8207                                                                        |this, p| {
 8208                                                                            this.child(
 8209                                                                                p.border_r_1(),
 8210                                                                            )
 8211                                                                        },
 8212                                                                    )
 8213                                                                    .child(self.center.render(
 8214                                                                        self.zoomed.as_ref(),
 8215                                                                        &PaneRenderContext {
 8216                                                                            follower_states:
 8217                                                                                &self.follower_states,
 8218                                                                            active_call: self.active_call(),
 8219                                                                            active_pane: &self.active_pane,
 8220                                                                            app_state: &self.app_state,
 8221                                                                            project: &self.project,
 8222                                                                            workspace: &self.weak_self,
 8223                                                                        },
 8224                                                                        window,
 8225                                                                        cx,
 8226                                                                    ))
 8227                                                                    .when_some(
 8228                                                                        paddings.1,
 8229                                                                        |this, p| {
 8230                                                                            this.child(
 8231                                                                                p.border_l_1(),
 8232                                                                            )
 8233                                                                        },
 8234                                                                    ),
 8235                                                            ),
 8236                                                    )
 8237
 8238                                                    .children(self.render_dock(
 8239                                                        DockPosition::Right,
 8240                                                        &self.right_dock,
 8241                                                        window,
 8242                                                        cx,
 8243                                                    )),
 8244                                            )
 8245                                            .child(div().w_full().children(self.render_dock(
 8246                                                DockPosition::Bottom,
 8247                                                &self.bottom_dock,
 8248                                                window,
 8249                                                cx
 8250                                            ))),
 8251
 8252                                        BottomDockLayout::LeftAligned => div()
 8253                                            .flex()
 8254                                            .flex_row()
 8255                                            .h_full()
 8256                                            .child(
 8257                                                div()
 8258                                                    .flex()
 8259                                                    .flex_col()
 8260                                                    .flex_1()
 8261                                                    .h_full()
 8262                                                    .child(
 8263                                                        div()
 8264                                                            .flex()
 8265                                                            .flex_row()
 8266                                                            .flex_1()
 8267                                                            .children(self.render_dock(DockPosition::Left, &self.left_dock, window, cx))
 8268
 8269                                                            .child(
 8270                                                                div()
 8271                                                                    .flex()
 8272                                                                    .flex_col()
 8273                                                                    .flex_1()
 8274                                                                    .overflow_hidden()
 8275                                                                    .child(
 8276                                                                        h_flex()
 8277                                                                            .flex_1()
 8278                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 8279                                                                            .child(self.center.render(
 8280                                                                                self.zoomed.as_ref(),
 8281                                                                                &PaneRenderContext {
 8282                                                                                    follower_states:
 8283                                                                                        &self.follower_states,
 8284                                                                                    active_call: self.active_call(),
 8285                                                                                    active_pane: &self.active_pane,
 8286                                                                                    app_state: &self.app_state,
 8287                                                                                    project: &self.project,
 8288                                                                                    workspace: &self.weak_self,
 8289                                                                                },
 8290                                                                                window,
 8291                                                                                cx,
 8292                                                                            ))
 8293                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 8294                                                                    )
 8295                                                            )
 8296
 8297                                                    )
 8298                                                    .child(
 8299                                                        div()
 8300                                                            .w_full()
 8301                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 8302                                                    ),
 8303                                            )
 8304                                            .children(self.render_dock(
 8305                                                DockPosition::Right,
 8306                                                &self.right_dock,
 8307                                                window,
 8308                                                cx,
 8309                                            )),
 8310                                        BottomDockLayout::RightAligned => div()
 8311                                            .flex()
 8312                                            .flex_row()
 8313                                            .h_full()
 8314                                            .children(self.render_dock(
 8315                                                DockPosition::Left,
 8316                                                &self.left_dock,
 8317                                                window,
 8318                                                cx,
 8319                                            ))
 8320
 8321                                            .child(
 8322                                                div()
 8323                                                    .flex()
 8324                                                    .flex_col()
 8325                                                    .flex_1()
 8326                                                    .h_full()
 8327                                                    .child(
 8328                                                        div()
 8329                                                            .flex()
 8330                                                            .flex_row()
 8331                                                            .flex_1()
 8332                                                            .child(
 8333                                                                div()
 8334                                                                    .flex()
 8335                                                                    .flex_col()
 8336                                                                    .flex_1()
 8337                                                                    .overflow_hidden()
 8338                                                                    .child(
 8339                                                                        h_flex()
 8340                                                                            .flex_1()
 8341                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 8342                                                                            .child(self.center.render(
 8343                                                                                self.zoomed.as_ref(),
 8344                                                                                &PaneRenderContext {
 8345                                                                                    follower_states:
 8346                                                                                        &self.follower_states,
 8347                                                                                    active_call: self.active_call(),
 8348                                                                                    active_pane: &self.active_pane,
 8349                                                                                    app_state: &self.app_state,
 8350                                                                                    project: &self.project,
 8351                                                                                    workspace: &self.weak_self,
 8352                                                                                },
 8353                                                                                window,
 8354                                                                                cx,
 8355                                                                            ))
 8356                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 8357                                                                    )
 8358                                                            )
 8359
 8360                                                            .children(self.render_dock(DockPosition::Right, &self.right_dock, window, cx))
 8361                                                    )
 8362                                                    .child(
 8363                                                        div()
 8364                                                            .w_full()
 8365                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 8366                                                    ),
 8367                                            ),
 8368                                        BottomDockLayout::Contained => div()
 8369                                            .flex()
 8370                                            .flex_row()
 8371                                            .h_full()
 8372                                            .children(self.render_dock(
 8373                                                DockPosition::Left,
 8374                                                &self.left_dock,
 8375                                                window,
 8376                                                cx,
 8377                                            ))
 8378
 8379                                            .child(
 8380                                                div()
 8381                                                    .flex()
 8382                                                    .flex_col()
 8383                                                    .flex_1()
 8384                                                    .overflow_hidden()
 8385                                                    .child(
 8386                                                        h_flex()
 8387                                                            .flex_1()
 8388                                                            .when_some(paddings.0, |this, p| {
 8389                                                                this.child(p.border_r_1())
 8390                                                            })
 8391                                                            .child(self.center.render(
 8392                                                                self.zoomed.as_ref(),
 8393                                                                &PaneRenderContext {
 8394                                                                    follower_states:
 8395                                                                        &self.follower_states,
 8396                                                                    active_call: self.active_call(),
 8397                                                                    active_pane: &self.active_pane,
 8398                                                                    app_state: &self.app_state,
 8399                                                                    project: &self.project,
 8400                                                                    workspace: &self.weak_self,
 8401                                                                },
 8402                                                                window,
 8403                                                                cx,
 8404                                                            ))
 8405                                                            .when_some(paddings.1, |this, p| {
 8406                                                                this.child(p.border_l_1())
 8407                                                            }),
 8408                                                    )
 8409                                                    .children(self.render_dock(
 8410                                                        DockPosition::Bottom,
 8411                                                        &self.bottom_dock,
 8412                                                        window,
 8413                                                        cx,
 8414                                                    )),
 8415                                            )
 8416
 8417                                            .children(self.render_dock(
 8418                                                DockPosition::Right,
 8419                                                &self.right_dock,
 8420                                                window,
 8421                                                cx,
 8422                                            )),
 8423                                    }
 8424                                })
 8425                                .children(self.zoomed.as_ref().and_then(|view| {
 8426                                    let zoomed_view = view.upgrade()?;
 8427                                    let div = div()
 8428                                        .occlude()
 8429                                        .absolute()
 8430                                        .overflow_hidden()
 8431                                        .border_color(colors.border)
 8432                                        .bg(colors.background)
 8433                                        .child(zoomed_view)
 8434                                        .inset_0()
 8435                                        .shadow_lg();
 8436
 8437                                    if !WorkspaceSettings::get_global(cx).zoomed_padding {
 8438                                       return Some(div);
 8439                                    }
 8440
 8441                                    Some(match self.zoomed_position {
 8442                                        Some(DockPosition::Left) => div.right_2().border_r_1(),
 8443                                        Some(DockPosition::Right) => div.left_2().border_l_1(),
 8444                                        Some(DockPosition::Bottom) => div.top_2().border_t_1(),
 8445                                        None => {
 8446                                            div.top_2().bottom_2().left_2().right_2().border_1()
 8447                                        }
 8448                                    })
 8449                                }))
 8450                                .children(self.render_notifications(window, cx)),
 8451                        )
 8452                        .when(self.status_bar_visible(cx), |parent| {
 8453                            parent.child(self.status_bar.clone())
 8454                        })
 8455                        .child(self.toast_layer.clone()),
 8456                )
 8457    }
 8458}
 8459
 8460impl WorkspaceStore {
 8461    pub fn new(client: Arc<Client>, cx: &mut Context<Self>) -> Self {
 8462        Self {
 8463            workspaces: Default::default(),
 8464            _subscriptions: vec![
 8465                client.add_request_handler(cx.weak_entity(), Self::handle_follow),
 8466                client.add_message_handler(cx.weak_entity(), Self::handle_update_followers),
 8467            ],
 8468            client,
 8469        }
 8470    }
 8471
 8472    pub fn update_followers(
 8473        &self,
 8474        project_id: Option<u64>,
 8475        update: proto::update_followers::Variant,
 8476        cx: &App,
 8477    ) -> Option<()> {
 8478        let active_call = GlobalAnyActiveCall::try_global(cx)?;
 8479        let room_id = active_call.0.room_id(cx)?;
 8480        self.client
 8481            .send(proto::UpdateFollowers {
 8482                room_id,
 8483                project_id,
 8484                variant: Some(update),
 8485            })
 8486            .log_err()
 8487    }
 8488
 8489    pub async fn handle_follow(
 8490        this: Entity<Self>,
 8491        envelope: TypedEnvelope<proto::Follow>,
 8492        mut cx: AsyncApp,
 8493    ) -> Result<proto::FollowResponse> {
 8494        this.update(&mut cx, |this, cx| {
 8495            let follower = Follower {
 8496                project_id: envelope.payload.project_id,
 8497                peer_id: envelope.original_sender_id()?,
 8498            };
 8499
 8500            let mut response = proto::FollowResponse::default();
 8501
 8502            this.workspaces.retain(|(window_handle, weak_workspace)| {
 8503                let Some(workspace) = weak_workspace.upgrade() else {
 8504                    return false;
 8505                };
 8506                window_handle
 8507                    .update(cx, |_, window, cx| {
 8508                        workspace.update(cx, |workspace, cx| {
 8509                            let handler_response =
 8510                                workspace.handle_follow(follower.project_id, window, cx);
 8511                            if let Some(active_view) = handler_response.active_view
 8512                                && workspace.project.read(cx).remote_id() == follower.project_id
 8513                            {
 8514                                response.active_view = Some(active_view)
 8515                            }
 8516                        });
 8517                    })
 8518                    .is_ok()
 8519            });
 8520
 8521            Ok(response)
 8522        })
 8523    }
 8524
 8525    async fn handle_update_followers(
 8526        this: Entity<Self>,
 8527        envelope: TypedEnvelope<proto::UpdateFollowers>,
 8528        mut cx: AsyncApp,
 8529    ) -> Result<()> {
 8530        let leader_id = envelope.original_sender_id()?;
 8531        let update = envelope.payload;
 8532
 8533        this.update(&mut cx, |this, cx| {
 8534            this.workspaces.retain(|(window_handle, weak_workspace)| {
 8535                let Some(workspace) = weak_workspace.upgrade() else {
 8536                    return false;
 8537                };
 8538                window_handle
 8539                    .update(cx, |_, window, cx| {
 8540                        workspace.update(cx, |workspace, cx| {
 8541                            let project_id = workspace.project.read(cx).remote_id();
 8542                            if update.project_id != project_id && update.project_id.is_some() {
 8543                                return;
 8544                            }
 8545                            workspace.handle_update_followers(
 8546                                leader_id,
 8547                                update.clone(),
 8548                                window,
 8549                                cx,
 8550                            );
 8551                        });
 8552                    })
 8553                    .is_ok()
 8554            });
 8555            Ok(())
 8556        })
 8557    }
 8558
 8559    pub fn workspaces(&self) -> impl Iterator<Item = &WeakEntity<Workspace>> {
 8560        self.workspaces.iter().map(|(_, weak)| weak)
 8561    }
 8562
 8563    pub fn workspaces_with_windows(
 8564        &self,
 8565    ) -> impl Iterator<Item = (gpui::AnyWindowHandle, &WeakEntity<Workspace>)> {
 8566        self.workspaces.iter().map(|(window, weak)| (*window, weak))
 8567    }
 8568}
 8569
 8570impl ViewId {
 8571    pub(crate) fn from_proto(message: proto::ViewId) -> Result<Self> {
 8572        Ok(Self {
 8573            creator: message
 8574                .creator
 8575                .map(CollaboratorId::PeerId)
 8576                .context("creator is missing")?,
 8577            id: message.id,
 8578        })
 8579    }
 8580
 8581    pub(crate) fn to_proto(self) -> Option<proto::ViewId> {
 8582        if let CollaboratorId::PeerId(peer_id) = self.creator {
 8583            Some(proto::ViewId {
 8584                creator: Some(peer_id),
 8585                id: self.id,
 8586            })
 8587        } else {
 8588            None
 8589        }
 8590    }
 8591}
 8592
 8593impl FollowerState {
 8594    fn pane(&self) -> &Entity<Pane> {
 8595        self.dock_pane.as_ref().unwrap_or(&self.center_pane)
 8596    }
 8597}
 8598
 8599pub trait WorkspaceHandle {
 8600    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath>;
 8601}
 8602
 8603impl WorkspaceHandle for Entity<Workspace> {
 8604    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath> {
 8605        self.read(cx)
 8606            .worktrees(cx)
 8607            .flat_map(|worktree| {
 8608                let worktree_id = worktree.read(cx).id();
 8609                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
 8610                    worktree_id,
 8611                    path: f.path.clone(),
 8612                })
 8613            })
 8614            .collect::<Vec<_>>()
 8615    }
 8616}
 8617
 8618pub async fn last_opened_workspace_location(
 8619    db: &WorkspaceDb,
 8620    fs: &dyn fs::Fs,
 8621) -> Option<(WorkspaceId, SerializedWorkspaceLocation, PathList)> {
 8622    db.last_workspace(fs)
 8623        .await
 8624        .log_err()
 8625        .flatten()
 8626        .map(|(id, location, paths, _timestamp)| (id, location, paths))
 8627}
 8628
 8629pub async fn last_session_workspace_locations(
 8630    db: &WorkspaceDb,
 8631    last_session_id: &str,
 8632    last_session_window_stack: Option<Vec<WindowId>>,
 8633    fs: &dyn fs::Fs,
 8634) -> Option<Vec<SessionWorkspace>> {
 8635    db.last_session_workspace_locations(last_session_id, last_session_window_stack, fs)
 8636        .await
 8637        .log_err()
 8638}
 8639
 8640pub async fn restore_multiworkspace(
 8641    multi_workspace: SerializedMultiWorkspace,
 8642    app_state: Arc<AppState>,
 8643    cx: &mut AsyncApp,
 8644) -> anyhow::Result<WindowHandle<MultiWorkspace>> {
 8645    let SerializedMultiWorkspace {
 8646        active_workspace,
 8647        state,
 8648    } = multi_workspace;
 8649    let MultiWorkspaceState {
 8650        sidebar_open,
 8651        project_group_keys,
 8652        sidebar_state,
 8653        ..
 8654    } = state;
 8655
 8656    let window_handle = if active_workspace.paths.is_empty() {
 8657        cx.update(|cx| {
 8658            open_workspace_by_id(active_workspace.workspace_id, app_state.clone(), None, cx)
 8659        })
 8660        .await?
 8661    } else {
 8662        let OpenResult { window, .. } = cx
 8663            .update(|cx| {
 8664                Workspace::new_local(
 8665                    active_workspace.paths.paths().to_vec(),
 8666                    app_state.clone(),
 8667                    None,
 8668                    None,
 8669                    None,
 8670                    OpenMode::Activate,
 8671                    cx,
 8672                )
 8673            })
 8674            .await?;
 8675        window
 8676    };
 8677
 8678    if !project_group_keys.is_empty() {
 8679        let restored_keys: Vec<ProjectGroupKey> =
 8680            project_group_keys.into_iter().map(Into::into).collect();
 8681        window_handle
 8682            .update(cx, |multi_workspace, _window, _cx| {
 8683                multi_workspace.restore_project_group_keys(restored_keys);
 8684            })
 8685            .ok();
 8686    }
 8687
 8688    if sidebar_open {
 8689        window_handle
 8690            .update(cx, |multi_workspace, _, cx| {
 8691                multi_workspace.open_sidebar(cx);
 8692            })
 8693            .ok();
 8694    }
 8695
 8696    if let Some(sidebar_state) = sidebar_state {
 8697        window_handle
 8698            .update(cx, |multi_workspace, window, cx| {
 8699                if let Some(sidebar) = multi_workspace.sidebar() {
 8700                    sidebar.restore_serialized_state(&sidebar_state, window, cx);
 8701                }
 8702                multi_workspace.serialize(cx);
 8703            })
 8704            .ok();
 8705    }
 8706
 8707    window_handle
 8708        .update(cx, |_, window, _cx| {
 8709            window.activate_window();
 8710        })
 8711        .ok();
 8712
 8713    Ok(window_handle)
 8714}
 8715
 8716actions!(
 8717    collab,
 8718    [
 8719        /// Opens the channel notes for the current call.
 8720        ///
 8721        /// Use `collab_panel::OpenSelectedChannelNotes` to open the channel notes for the selected
 8722        /// channel in the collab panel.
 8723        ///
 8724        /// If you want to open a specific channel, use `zed::OpenZedUrl` with a channel notes URL -
 8725        /// can be copied via "Copy link to section" in the context menu of the channel notes
 8726        /// buffer. These URLs look like `https://zed.dev/channel/channel-name-CHANNEL_ID/notes`.
 8727        OpenChannelNotes,
 8728        /// Mutes your microphone.
 8729        Mute,
 8730        /// Deafens yourself (mute both microphone and speakers).
 8731        Deafen,
 8732        /// Leaves the current call.
 8733        LeaveCall,
 8734        /// Shares the current project with collaborators.
 8735        ShareProject,
 8736        /// Shares your screen with collaborators.
 8737        ScreenShare,
 8738        /// Copies the current room name and session id for debugging purposes.
 8739        CopyRoomId,
 8740    ]
 8741);
 8742
 8743/// Opens the channel notes for a specific channel by its ID.
 8744#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
 8745#[action(namespace = collab)]
 8746#[serde(deny_unknown_fields)]
 8747pub struct OpenChannelNotesById {
 8748    pub channel_id: u64,
 8749}
 8750
 8751actions!(
 8752    zed,
 8753    [
 8754        /// Opens the Zed log file.
 8755        OpenLog,
 8756        /// Reveals the Zed log file in the system file manager.
 8757        RevealLogInFileManager
 8758    ]
 8759);
 8760
 8761async fn join_channel_internal(
 8762    channel_id: ChannelId,
 8763    app_state: &Arc<AppState>,
 8764    requesting_window: Option<WindowHandle<MultiWorkspace>>,
 8765    requesting_workspace: Option<WeakEntity<Workspace>>,
 8766    active_call: &dyn AnyActiveCall,
 8767    cx: &mut AsyncApp,
 8768) -> Result<bool> {
 8769    let (should_prompt, already_in_channel) = cx.update(|cx| {
 8770        if !active_call.is_in_room(cx) {
 8771            return (false, false);
 8772        }
 8773
 8774        let already_in_channel = active_call.channel_id(cx) == Some(channel_id);
 8775        let should_prompt = active_call.is_sharing_project(cx)
 8776            && active_call.has_remote_participants(cx)
 8777            && !already_in_channel;
 8778        (should_prompt, already_in_channel)
 8779    });
 8780
 8781    if already_in_channel {
 8782        let task = cx.update(|cx| {
 8783            if let Some((project, host)) = active_call.most_active_project(cx) {
 8784                Some(join_in_room_project(project, host, app_state.clone(), cx))
 8785            } else {
 8786                None
 8787            }
 8788        });
 8789        if let Some(task) = task {
 8790            task.await?;
 8791        }
 8792        return anyhow::Ok(true);
 8793    }
 8794
 8795    if should_prompt {
 8796        if let Some(multi_workspace) = requesting_window {
 8797            let answer = multi_workspace
 8798                .update(cx, |_, window, cx| {
 8799                    window.prompt(
 8800                        PromptLevel::Warning,
 8801                        "Do you want to switch channels?",
 8802                        Some("Leaving this call will unshare your current project."),
 8803                        &["Yes, Join Channel", "Cancel"],
 8804                        cx,
 8805                    )
 8806                })?
 8807                .await;
 8808
 8809            if answer == Ok(1) {
 8810                return Ok(false);
 8811            }
 8812        } else {
 8813            return Ok(false);
 8814        }
 8815    }
 8816
 8817    let client = cx.update(|cx| active_call.client(cx));
 8818
 8819    let mut client_status = client.status();
 8820
 8821    // this loop will terminate within client::CONNECTION_TIMEOUT seconds.
 8822    'outer: loop {
 8823        let Some(status) = client_status.recv().await else {
 8824            anyhow::bail!("error connecting");
 8825        };
 8826
 8827        match status {
 8828            Status::Connecting
 8829            | Status::Authenticating
 8830            | Status::Authenticated
 8831            | Status::Reconnecting
 8832            | Status::Reauthenticating
 8833            | Status::Reauthenticated => continue,
 8834            Status::Connected { .. } => break 'outer,
 8835            Status::SignedOut | Status::AuthenticationError => {
 8836                return Err(ErrorCode::SignedOut.into());
 8837            }
 8838            Status::UpgradeRequired => return Err(ErrorCode::UpgradeRequired.into()),
 8839            Status::ConnectionError | Status::ConnectionLost | Status::ReconnectionError { .. } => {
 8840                return Err(ErrorCode::Disconnected.into());
 8841            }
 8842        }
 8843    }
 8844
 8845    let joined = cx
 8846        .update(|cx| active_call.join_channel(channel_id, cx))
 8847        .await?;
 8848
 8849    if !joined {
 8850        return anyhow::Ok(true);
 8851    }
 8852
 8853    cx.update(|cx| active_call.room_update_completed(cx)).await;
 8854
 8855    let task = cx.update(|cx| {
 8856        if let Some((project, host)) = active_call.most_active_project(cx) {
 8857            return Some(join_in_room_project(project, host, app_state.clone(), cx));
 8858        }
 8859
 8860        // If you are the first to join a channel, see if you should share your project.
 8861        if !active_call.has_remote_participants(cx)
 8862            && !active_call.local_participant_is_guest(cx)
 8863            && let Some(workspace) = requesting_workspace.as_ref().and_then(|w| w.upgrade())
 8864        {
 8865            let project = workspace.update(cx, |workspace, cx| {
 8866                let project = workspace.project.read(cx);
 8867
 8868                if !active_call.share_on_join(cx) {
 8869                    return None;
 8870                }
 8871
 8872                if (project.is_local() || project.is_via_remote_server())
 8873                    && project.visible_worktrees(cx).any(|tree| {
 8874                        tree.read(cx)
 8875                            .root_entry()
 8876                            .is_some_and(|entry| entry.is_dir())
 8877                    })
 8878                {
 8879                    Some(workspace.project.clone())
 8880                } else {
 8881                    None
 8882                }
 8883            });
 8884            if let Some(project) = project {
 8885                let share_task = active_call.share_project(project, cx);
 8886                return Some(cx.spawn(async move |_cx| -> Result<()> {
 8887                    share_task.await?;
 8888                    Ok(())
 8889                }));
 8890            }
 8891        }
 8892
 8893        None
 8894    });
 8895    if let Some(task) = task {
 8896        task.await?;
 8897        return anyhow::Ok(true);
 8898    }
 8899    anyhow::Ok(false)
 8900}
 8901
 8902pub fn join_channel(
 8903    channel_id: ChannelId,
 8904    app_state: Arc<AppState>,
 8905    requesting_window: Option<WindowHandle<MultiWorkspace>>,
 8906    requesting_workspace: Option<WeakEntity<Workspace>>,
 8907    cx: &mut App,
 8908) -> Task<Result<()>> {
 8909    let active_call = GlobalAnyActiveCall::global(cx).clone();
 8910    cx.spawn(async move |cx| {
 8911        let result = join_channel_internal(
 8912            channel_id,
 8913            &app_state,
 8914            requesting_window,
 8915            requesting_workspace,
 8916            &*active_call.0,
 8917            cx,
 8918        )
 8919        .await;
 8920
 8921        // join channel succeeded, and opened a window
 8922        if matches!(result, Ok(true)) {
 8923            return anyhow::Ok(());
 8924        }
 8925
 8926        // find an existing workspace to focus and show call controls
 8927        let mut active_window = requesting_window.or_else(|| activate_any_workspace_window(cx));
 8928        if active_window.is_none() {
 8929            // no open workspaces, make one to show the error in (blergh)
 8930            let OpenResult {
 8931                window: window_handle,
 8932                ..
 8933            } = cx
 8934                .update(|cx| {
 8935                    Workspace::new_local(
 8936                        vec![],
 8937                        app_state.clone(),
 8938                        requesting_window,
 8939                        None,
 8940                        None,
 8941                        OpenMode::Activate,
 8942                        cx,
 8943                    )
 8944                })
 8945                .await?;
 8946
 8947            window_handle
 8948                .update(cx, |_, window, _cx| {
 8949                    window.activate_window();
 8950                })
 8951                .ok();
 8952
 8953            if result.is_ok() {
 8954                cx.update(|cx| {
 8955                    cx.dispatch_action(&OpenChannelNotes);
 8956                });
 8957            }
 8958
 8959            active_window = Some(window_handle);
 8960        }
 8961
 8962        if let Err(err) = result {
 8963            log::error!("failed to join channel: {}", err);
 8964            if let Some(active_window) = active_window {
 8965                active_window
 8966                    .update(cx, |_, window, cx| {
 8967                        let detail: SharedString = match err.error_code() {
 8968                            ErrorCode::SignedOut => "Please sign in to continue.".into(),
 8969                            ErrorCode::UpgradeRequired => concat!(
 8970                                "Your are running an unsupported version of Zed. ",
 8971                                "Please update to continue."
 8972                            )
 8973                            .into(),
 8974                            ErrorCode::NoSuchChannel => concat!(
 8975                                "No matching channel was found. ",
 8976                                "Please check the link and try again."
 8977                            )
 8978                            .into(),
 8979                            ErrorCode::Forbidden => concat!(
 8980                                "This channel is private, and you do not have access. ",
 8981                                "Please ask someone to add you and try again."
 8982                            )
 8983                            .into(),
 8984                            ErrorCode::Disconnected => {
 8985                                "Please check your internet connection and try again.".into()
 8986                            }
 8987                            _ => format!("{}\n\nPlease try again.", err).into(),
 8988                        };
 8989                        window.prompt(
 8990                            PromptLevel::Critical,
 8991                            "Failed to join channel",
 8992                            Some(&detail),
 8993                            &["Ok"],
 8994                            cx,
 8995                        )
 8996                    })?
 8997                    .await
 8998                    .ok();
 8999            }
 9000        }
 9001
 9002        // return ok, we showed the error to the user.
 9003        anyhow::Ok(())
 9004    })
 9005}
 9006
 9007pub async fn get_any_active_multi_workspace(
 9008    app_state: Arc<AppState>,
 9009    mut cx: AsyncApp,
 9010) -> anyhow::Result<WindowHandle<MultiWorkspace>> {
 9011    // find an existing workspace to focus and show call controls
 9012    let active_window = activate_any_workspace_window(&mut cx);
 9013    if active_window.is_none() {
 9014        cx.update(|cx| {
 9015            Workspace::new_local(
 9016                vec![],
 9017                app_state.clone(),
 9018                None,
 9019                None,
 9020                None,
 9021                OpenMode::Activate,
 9022                cx,
 9023            )
 9024        })
 9025        .await?;
 9026    }
 9027    activate_any_workspace_window(&mut cx).context("could not open zed")
 9028}
 9029
 9030fn activate_any_workspace_window(cx: &mut AsyncApp) -> Option<WindowHandle<MultiWorkspace>> {
 9031    cx.update(|cx| {
 9032        if let Some(workspace_window) = cx
 9033            .active_window()
 9034            .and_then(|window| window.downcast::<MultiWorkspace>())
 9035        {
 9036            return Some(workspace_window);
 9037        }
 9038
 9039        for window in cx.windows() {
 9040            if let Some(workspace_window) = window.downcast::<MultiWorkspace>() {
 9041                workspace_window
 9042                    .update(cx, |_, window, _| window.activate_window())
 9043                    .ok();
 9044                return Some(workspace_window);
 9045            }
 9046        }
 9047        None
 9048    })
 9049}
 9050
 9051pub fn local_workspace_windows(cx: &App) -> Vec<WindowHandle<MultiWorkspace>> {
 9052    workspace_windows_for_location(&SerializedWorkspaceLocation::Local, cx)
 9053}
 9054
 9055pub fn workspace_windows_for_location(
 9056    serialized_location: &SerializedWorkspaceLocation,
 9057    cx: &App,
 9058) -> Vec<WindowHandle<MultiWorkspace>> {
 9059    cx.windows()
 9060        .into_iter()
 9061        .filter_map(|window| window.downcast::<MultiWorkspace>())
 9062        .filter(|multi_workspace| {
 9063            let same_host = |left: &RemoteConnectionOptions, right: &RemoteConnectionOptions| match (left, right) {
 9064                (RemoteConnectionOptions::Ssh(a), RemoteConnectionOptions::Ssh(b)) => {
 9065                    (&a.host, &a.username, &a.port) == (&b.host, &b.username, &b.port)
 9066                }
 9067                (RemoteConnectionOptions::Wsl(a), RemoteConnectionOptions::Wsl(b)) => {
 9068                    // The WSL username is not consistently populated in the workspace location, so ignore it for now.
 9069                    a.distro_name == b.distro_name
 9070                }
 9071                (RemoteConnectionOptions::Docker(a), RemoteConnectionOptions::Docker(b)) => {
 9072                    a.container_id == b.container_id
 9073                }
 9074                #[cfg(any(test, feature = "test-support"))]
 9075                (RemoteConnectionOptions::Mock(a), RemoteConnectionOptions::Mock(b)) => {
 9076                    a.id == b.id
 9077                }
 9078                _ => false,
 9079            };
 9080
 9081            multi_workspace.read(cx).is_ok_and(|multi_workspace| {
 9082                multi_workspace.workspaces().iter().any(|workspace| {
 9083                    match workspace.read(cx).workspace_location(cx) {
 9084                        WorkspaceLocation::Location(location, _) => {
 9085                            match (&location, serialized_location) {
 9086                                (
 9087                                    SerializedWorkspaceLocation::Local,
 9088                                    SerializedWorkspaceLocation::Local,
 9089                                ) => true,
 9090                                (
 9091                                    SerializedWorkspaceLocation::Remote(a),
 9092                                    SerializedWorkspaceLocation::Remote(b),
 9093                                ) => same_host(a, b),
 9094                                _ => false,
 9095                            }
 9096                        }
 9097                        _ => false,
 9098                    }
 9099                })
 9100            })
 9101        })
 9102        .collect()
 9103}
 9104
 9105pub async fn find_existing_workspace(
 9106    abs_paths: &[PathBuf],
 9107    open_options: &OpenOptions,
 9108    location: &SerializedWorkspaceLocation,
 9109    cx: &mut AsyncApp,
 9110) -> (
 9111    Option<(WindowHandle<MultiWorkspace>, Entity<Workspace>)>,
 9112    OpenVisible,
 9113) {
 9114    let mut existing: Option<(WindowHandle<MultiWorkspace>, Entity<Workspace>)> = None;
 9115    let mut open_visible = OpenVisible::All;
 9116    let mut best_match = None;
 9117
 9118    if open_options.open_new_workspace != Some(true) {
 9119        cx.update(|cx| {
 9120            for window in workspace_windows_for_location(location, cx) {
 9121                if let Ok(multi_workspace) = window.read(cx) {
 9122                    for workspace in multi_workspace.workspaces() {
 9123                        let project = workspace.read(cx).project.read(cx);
 9124                        let m = project.visibility_for_paths(
 9125                            abs_paths,
 9126                            open_options.open_new_workspace == None,
 9127                            cx,
 9128                        );
 9129                        if m > best_match {
 9130                            existing = Some((window, workspace.clone()));
 9131                            best_match = m;
 9132                        } else if best_match.is_none()
 9133                            && open_options.open_new_workspace == Some(false)
 9134                        {
 9135                            existing = Some((window, workspace.clone()))
 9136                        }
 9137                    }
 9138                }
 9139            }
 9140        });
 9141
 9142        let all_paths_are_files = existing
 9143            .as_ref()
 9144            .and_then(|(_, target_workspace)| {
 9145                cx.update(|cx| {
 9146                    let workspace = target_workspace.read(cx);
 9147                    let project = workspace.project.read(cx);
 9148                    let path_style = workspace.path_style(cx);
 9149                    Some(!abs_paths.iter().any(|path| {
 9150                        let path = util::paths::SanitizedPath::new(path);
 9151                        project.worktrees(cx).any(|worktree| {
 9152                            let worktree = worktree.read(cx);
 9153                            let abs_path = worktree.abs_path();
 9154                            path_style
 9155                                .strip_prefix(path.as_ref(), abs_path.as_ref())
 9156                                .and_then(|rel| worktree.entry_for_path(&rel))
 9157                                .is_some_and(|e| e.is_dir())
 9158                        })
 9159                    }))
 9160                })
 9161            })
 9162            .unwrap_or(false);
 9163
 9164        if open_options.open_new_workspace.is_none()
 9165            && existing.is_some()
 9166            && open_options.wait
 9167            && all_paths_are_files
 9168        {
 9169            cx.update(|cx| {
 9170                let windows = workspace_windows_for_location(location, cx);
 9171                let window = cx
 9172                    .active_window()
 9173                    .and_then(|window| window.downcast::<MultiWorkspace>())
 9174                    .filter(|window| windows.contains(window))
 9175                    .or_else(|| windows.into_iter().next());
 9176                if let Some(window) = window {
 9177                    if let Ok(multi_workspace) = window.read(cx) {
 9178                        let active_workspace = multi_workspace.workspace().clone();
 9179                        existing = Some((window, active_workspace));
 9180                        open_visible = OpenVisible::None;
 9181                    }
 9182                }
 9183            });
 9184        }
 9185    }
 9186    (existing, open_visible)
 9187}
 9188
 9189#[derive(Default, Clone)]
 9190pub struct OpenOptions {
 9191    pub visible: Option<OpenVisible>,
 9192    pub focus: Option<bool>,
 9193    pub open_new_workspace: Option<bool>,
 9194    pub wait: bool,
 9195    pub requesting_window: Option<WindowHandle<MultiWorkspace>>,
 9196    pub open_mode: OpenMode,
 9197    pub env: Option<HashMap<String, String>>,
 9198    pub open_in_dev_container: bool,
 9199}
 9200
 9201/// The result of opening a workspace via [`open_paths`], [`Workspace::new_local`],
 9202/// or [`Workspace::open_workspace_for_paths`].
 9203pub struct OpenResult {
 9204    pub window: WindowHandle<MultiWorkspace>,
 9205    pub workspace: Entity<Workspace>,
 9206    pub opened_items: Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 9207}
 9208
 9209/// Opens a workspace by its database ID, used for restoring empty workspaces with unsaved content.
 9210pub fn open_workspace_by_id(
 9211    workspace_id: WorkspaceId,
 9212    app_state: Arc<AppState>,
 9213    requesting_window: Option<WindowHandle<MultiWorkspace>>,
 9214    cx: &mut App,
 9215) -> Task<anyhow::Result<WindowHandle<MultiWorkspace>>> {
 9216    let project_handle = Project::local(
 9217        app_state.client.clone(),
 9218        app_state.node_runtime.clone(),
 9219        app_state.user_store.clone(),
 9220        app_state.languages.clone(),
 9221        app_state.fs.clone(),
 9222        None,
 9223        project::LocalProjectFlags {
 9224            init_worktree_trust: true,
 9225            ..project::LocalProjectFlags::default()
 9226        },
 9227        cx,
 9228    );
 9229
 9230    let db = WorkspaceDb::global(cx);
 9231    let kvp = db::kvp::KeyValueStore::global(cx);
 9232    cx.spawn(async move |cx| {
 9233        let serialized_workspace = db
 9234            .workspace_for_id(workspace_id)
 9235            .with_context(|| format!("Workspace {workspace_id:?} not found"))?;
 9236
 9237        let centered_layout = serialized_workspace.centered_layout;
 9238
 9239        let (window, workspace) = if let Some(window) = requesting_window {
 9240            let workspace = window.update(cx, |multi_workspace, window, cx| {
 9241                let workspace = cx.new(|cx| {
 9242                    let mut workspace = Workspace::new(
 9243                        Some(workspace_id),
 9244                        project_handle.clone(),
 9245                        app_state.clone(),
 9246                        window,
 9247                        cx,
 9248                    );
 9249                    workspace.centered_layout = centered_layout;
 9250                    workspace
 9251                });
 9252                multi_workspace.add(workspace.clone(), &*window, cx);
 9253                workspace
 9254            })?;
 9255            (window, workspace)
 9256        } else {
 9257            let window_bounds_override = window_bounds_env_override();
 9258
 9259            let (window_bounds, display) = if let Some(bounds) = window_bounds_override {
 9260                (Some(WindowBounds::Windowed(bounds)), None)
 9261            } else if let Some(display) = serialized_workspace.display
 9262                && let Some(bounds) = serialized_workspace.window_bounds.as_ref()
 9263            {
 9264                (Some(bounds.0), Some(display))
 9265            } else if let Some((display, bounds)) = persistence::read_default_window_bounds(&kvp) {
 9266                (Some(bounds), Some(display))
 9267            } else {
 9268                (None, None)
 9269            };
 9270
 9271            let options = cx.update(|cx| {
 9272                let mut options = (app_state.build_window_options)(display, cx);
 9273                options.window_bounds = window_bounds;
 9274                options
 9275            });
 9276
 9277            let window = cx.open_window(options, {
 9278                let app_state = app_state.clone();
 9279                let project_handle = project_handle.clone();
 9280                move |window, cx| {
 9281                    let workspace = cx.new(|cx| {
 9282                        let mut workspace = Workspace::new(
 9283                            Some(workspace_id),
 9284                            project_handle,
 9285                            app_state,
 9286                            window,
 9287                            cx,
 9288                        );
 9289                        workspace.centered_layout = centered_layout;
 9290                        workspace
 9291                    });
 9292                    cx.new(|cx| MultiWorkspace::new(workspace, window, cx))
 9293                }
 9294            })?;
 9295
 9296            let workspace = window.update(cx, |multi_workspace: &mut MultiWorkspace, _, _cx| {
 9297                multi_workspace.workspace().clone()
 9298            })?;
 9299
 9300            (window, workspace)
 9301        };
 9302
 9303        notify_if_database_failed(window, cx);
 9304
 9305        // Restore items from the serialized workspace
 9306        window
 9307            .update(cx, |_, window, cx| {
 9308                workspace.update(cx, |_workspace, cx| {
 9309                    open_items(Some(serialized_workspace), vec![], window, cx)
 9310                })
 9311            })?
 9312            .await?;
 9313
 9314        window.update(cx, |_, window, cx| {
 9315            workspace.update(cx, |workspace, cx| {
 9316                workspace.serialize_workspace(window, cx);
 9317            });
 9318        })?;
 9319
 9320        Ok(window)
 9321    })
 9322}
 9323
 9324#[allow(clippy::type_complexity)]
 9325pub fn open_paths(
 9326    abs_paths: &[PathBuf],
 9327    app_state: Arc<AppState>,
 9328    open_options: OpenOptions,
 9329    cx: &mut App,
 9330) -> Task<anyhow::Result<OpenResult>> {
 9331    let abs_paths = abs_paths.to_vec();
 9332    #[cfg(target_os = "windows")]
 9333    let wsl_path = abs_paths
 9334        .iter()
 9335        .find_map(|p| util::paths::WslPath::from_path(p));
 9336
 9337    cx.spawn(async move |cx| {
 9338        let (mut existing, mut open_visible) = find_existing_workspace(
 9339            &abs_paths,
 9340            &open_options,
 9341            &SerializedWorkspaceLocation::Local,
 9342            cx,
 9343        )
 9344        .await;
 9345
 9346        // Fallback: if no workspace contains the paths and all paths are files,
 9347        // prefer an existing local workspace window (active window first).
 9348        if open_options.open_new_workspace.is_none() && existing.is_none() {
 9349            let all_paths = abs_paths.iter().map(|path| app_state.fs.metadata(path));
 9350            let all_metadatas = futures::future::join_all(all_paths)
 9351                .await
 9352                .into_iter()
 9353                .filter_map(|result| result.ok().flatten())
 9354                .collect::<Vec<_>>();
 9355
 9356            if all_metadatas.iter().all(|file| !file.is_dir) {
 9357                cx.update(|cx| {
 9358                    let windows = workspace_windows_for_location(
 9359                        &SerializedWorkspaceLocation::Local,
 9360                        cx,
 9361                    );
 9362                    let window = cx
 9363                        .active_window()
 9364                        .and_then(|window| window.downcast::<MultiWorkspace>())
 9365                        .filter(|window| windows.contains(window))
 9366                        .or_else(|| windows.into_iter().next());
 9367                    if let Some(window) = window {
 9368                        if let Ok(multi_workspace) = window.read(cx) {
 9369                            let active_workspace = multi_workspace.workspace().clone();
 9370                            existing = Some((window, active_workspace));
 9371                            open_visible = OpenVisible::None;
 9372                        }
 9373                    }
 9374                });
 9375            }
 9376        }
 9377
 9378        let open_in_dev_container = open_options.open_in_dev_container;
 9379
 9380        let result = if let Some((existing, target_workspace)) = existing {
 9381            let open_task = existing
 9382                .update(cx, |multi_workspace, window, cx| {
 9383                    window.activate_window();
 9384                    multi_workspace.activate(target_workspace.clone(), window, cx);
 9385                    target_workspace.update(cx, |workspace, cx| {
 9386                        if open_in_dev_container {
 9387                            workspace.set_open_in_dev_container(true);
 9388                        }
 9389                        workspace.open_paths(
 9390                            abs_paths,
 9391                            OpenOptions {
 9392                                visible: Some(open_visible),
 9393                                ..Default::default()
 9394                            },
 9395                            None,
 9396                            window,
 9397                            cx,
 9398                        )
 9399                    })
 9400                })?
 9401                .await;
 9402
 9403            _ = existing.update(cx, |multi_workspace, _, cx| {
 9404                let workspace = multi_workspace.workspace().clone();
 9405                workspace.update(cx, |workspace, cx| {
 9406                    for item in open_task.iter().flatten() {
 9407                        if let Err(e) = item {
 9408                            workspace.show_error(&e, cx);
 9409                        }
 9410                    }
 9411                });
 9412            });
 9413
 9414            Ok(OpenResult { window: existing, workspace: target_workspace, opened_items: open_task })
 9415        } else {
 9416            let init = if open_in_dev_container {
 9417                Some(Box::new(|workspace: &mut Workspace, _window: &mut Window, _cx: &mut Context<Workspace>| {
 9418                    workspace.set_open_in_dev_container(true);
 9419                }) as Box<dyn FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send>)
 9420            } else {
 9421                None
 9422            };
 9423            let result = cx
 9424                .update(move |cx| {
 9425                    Workspace::new_local(
 9426                        abs_paths,
 9427                        app_state.clone(),
 9428                        open_options.requesting_window,
 9429                        open_options.env,
 9430                        init,
 9431                        open_options.open_mode,
 9432                        cx,
 9433                    )
 9434                })
 9435                .await;
 9436
 9437            if let Ok(ref result) = result {
 9438                result.window
 9439                    .update(cx, |_, window, _cx| {
 9440                        window.activate_window();
 9441                    })
 9442                    .log_err();
 9443            }
 9444
 9445            result
 9446        };
 9447
 9448        #[cfg(target_os = "windows")]
 9449        if let Some(util::paths::WslPath{distro, path}) = wsl_path
 9450            && let Ok(ref result) = result
 9451        {
 9452            result.window
 9453                .update(cx, move |multi_workspace, _window, cx| {
 9454                    struct OpenInWsl;
 9455                    let workspace = multi_workspace.workspace().clone();
 9456                    workspace.update(cx, |workspace, cx| {
 9457                        workspace.show_notification(NotificationId::unique::<OpenInWsl>(), cx, move |cx| {
 9458                            let display_path = util::markdown::MarkdownInlineCode(&path.to_string_lossy());
 9459                            let msg = format!("{display_path} is inside a WSL filesystem, some features may not work unless you open it with WSL remote");
 9460                            cx.new(move |cx| {
 9461                                MessageNotification::new(msg, cx)
 9462                                    .primary_message("Open in WSL")
 9463                                    .primary_icon(IconName::FolderOpen)
 9464                                    .primary_on_click(move |window, cx| {
 9465                                        window.dispatch_action(Box::new(remote::OpenWslPath {
 9466                                                distro: remote::WslConnectionOptions {
 9467                                                        distro_name: distro.clone(),
 9468                                                    user: None,
 9469                                                },
 9470                                                paths: vec![path.clone().into()],
 9471                                            }), cx)
 9472                                    })
 9473                            })
 9474                        });
 9475                    });
 9476                })
 9477                .unwrap();
 9478        };
 9479        result
 9480    })
 9481}
 9482
 9483pub fn open_new(
 9484    open_options: OpenOptions,
 9485    app_state: Arc<AppState>,
 9486    cx: &mut App,
 9487    init: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + 'static + Send,
 9488) -> Task<anyhow::Result<()>> {
 9489    let addition = open_options.open_mode;
 9490    let task = Workspace::new_local(
 9491        Vec::new(),
 9492        app_state,
 9493        open_options.requesting_window,
 9494        open_options.env,
 9495        Some(Box::new(init)),
 9496        addition,
 9497        cx,
 9498    );
 9499    cx.spawn(async move |cx| {
 9500        let OpenResult { window, .. } = task.await?;
 9501        window
 9502            .update(cx, |_, window, _cx| {
 9503                window.activate_window();
 9504            })
 9505            .ok();
 9506        Ok(())
 9507    })
 9508}
 9509
 9510pub fn create_and_open_local_file(
 9511    path: &'static Path,
 9512    window: &mut Window,
 9513    cx: &mut Context<Workspace>,
 9514    default_content: impl 'static + Send + FnOnce() -> Rope,
 9515) -> Task<Result<Box<dyn ItemHandle>>> {
 9516    cx.spawn_in(window, async move |workspace, cx| {
 9517        let fs = workspace.read_with(cx, |workspace, _| workspace.app_state().fs.clone())?;
 9518        if !fs.is_file(path).await {
 9519            fs.create_file(path, Default::default()).await?;
 9520            fs.save(path, &default_content(), Default::default())
 9521                .await?;
 9522        }
 9523
 9524        workspace
 9525            .update_in(cx, |workspace, window, cx| {
 9526                workspace.with_local_or_wsl_workspace(window, cx, |workspace, window, cx| {
 9527                    let path = workspace
 9528                        .project
 9529                        .read_with(cx, |project, cx| project.try_windows_path_to_wsl(path, cx));
 9530                    cx.spawn_in(window, async move |workspace, cx| {
 9531                        let path = path.await?;
 9532
 9533                        let path = fs.canonicalize(&path).await.unwrap_or(path);
 9534
 9535                        let mut items = workspace
 9536                            .update_in(cx, |workspace, window, cx| {
 9537                                workspace.open_paths(
 9538                                    vec![path.to_path_buf()],
 9539                                    OpenOptions {
 9540                                        visible: Some(OpenVisible::None),
 9541                                        ..Default::default()
 9542                                    },
 9543                                    None,
 9544                                    window,
 9545                                    cx,
 9546                                )
 9547                            })?
 9548                            .await;
 9549                        let item = items.pop().flatten();
 9550                        item.with_context(|| format!("path {path:?} is not a file"))?
 9551                    })
 9552                })
 9553            })?
 9554            .await?
 9555            .await
 9556    })
 9557}
 9558
 9559pub fn open_remote_project_with_new_connection(
 9560    window: WindowHandle<MultiWorkspace>,
 9561    remote_connection: Arc<dyn RemoteConnection>,
 9562    cancel_rx: oneshot::Receiver<()>,
 9563    delegate: Arc<dyn RemoteClientDelegate>,
 9564    app_state: Arc<AppState>,
 9565    paths: Vec<PathBuf>,
 9566    cx: &mut App,
 9567) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 9568    cx.spawn(async move |cx| {
 9569        let (workspace_id, serialized_workspace) =
 9570            deserialize_remote_project(remote_connection.connection_options(), paths.clone(), cx)
 9571                .await?;
 9572
 9573        let session = match cx
 9574            .update(|cx| {
 9575                remote::RemoteClient::new(
 9576                    ConnectionIdentifier::Workspace(workspace_id.0),
 9577                    remote_connection,
 9578                    cancel_rx,
 9579                    delegate,
 9580                    cx,
 9581                )
 9582            })
 9583            .await?
 9584        {
 9585            Some(result) => result,
 9586            None => return Ok(Vec::new()),
 9587        };
 9588
 9589        let project = cx.update(|cx| {
 9590            project::Project::remote(
 9591                session,
 9592                app_state.client.clone(),
 9593                app_state.node_runtime.clone(),
 9594                app_state.user_store.clone(),
 9595                app_state.languages.clone(),
 9596                app_state.fs.clone(),
 9597                true,
 9598                cx,
 9599            )
 9600        });
 9601
 9602        open_remote_project_inner(
 9603            project,
 9604            paths,
 9605            workspace_id,
 9606            serialized_workspace,
 9607            app_state,
 9608            window,
 9609            cx,
 9610        )
 9611        .await
 9612    })
 9613}
 9614
 9615pub fn open_remote_project_with_existing_connection(
 9616    connection_options: RemoteConnectionOptions,
 9617    project: Entity<Project>,
 9618    paths: Vec<PathBuf>,
 9619    app_state: Arc<AppState>,
 9620    window: WindowHandle<MultiWorkspace>,
 9621    cx: &mut AsyncApp,
 9622) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 9623    cx.spawn(async move |cx| {
 9624        let (workspace_id, serialized_workspace) =
 9625            deserialize_remote_project(connection_options.clone(), paths.clone(), cx).await?;
 9626
 9627        open_remote_project_inner(
 9628            project,
 9629            paths,
 9630            workspace_id,
 9631            serialized_workspace,
 9632            app_state,
 9633            window,
 9634            cx,
 9635        )
 9636        .await
 9637    })
 9638}
 9639
 9640async fn open_remote_project_inner(
 9641    project: Entity<Project>,
 9642    paths: Vec<PathBuf>,
 9643    workspace_id: WorkspaceId,
 9644    serialized_workspace: Option<SerializedWorkspace>,
 9645    app_state: Arc<AppState>,
 9646    window: WindowHandle<MultiWorkspace>,
 9647    cx: &mut AsyncApp,
 9648) -> Result<Vec<Option<Box<dyn ItemHandle>>>> {
 9649    let db = cx.update(|cx| WorkspaceDb::global(cx));
 9650    let toolchains = db.toolchains(workspace_id).await?;
 9651    for (toolchain, worktree_path, path) in toolchains {
 9652        project
 9653            .update(cx, |this, cx| {
 9654                let Some(worktree_id) =
 9655                    this.find_worktree(&worktree_path, cx)
 9656                        .and_then(|(worktree, rel_path)| {
 9657                            if rel_path.is_empty() {
 9658                                Some(worktree.read(cx).id())
 9659                            } else {
 9660                                None
 9661                            }
 9662                        })
 9663                else {
 9664                    return Task::ready(None);
 9665                };
 9666
 9667                this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 9668            })
 9669            .await;
 9670    }
 9671    let mut project_paths_to_open = vec![];
 9672    let mut project_path_errors = vec![];
 9673
 9674    for path in paths {
 9675        let result = cx
 9676            .update(|cx| Workspace::project_path_for_path(project.clone(), &path, true, cx))
 9677            .await;
 9678        match result {
 9679            Ok((_, project_path)) => {
 9680                project_paths_to_open.push((path.clone(), Some(project_path)));
 9681            }
 9682            Err(error) => {
 9683                project_path_errors.push(error);
 9684            }
 9685        };
 9686    }
 9687
 9688    if project_paths_to_open.is_empty() {
 9689        return Err(project_path_errors.pop().context("no paths given")?);
 9690    }
 9691
 9692    let workspace = window.update(cx, |multi_workspace, window, cx| {
 9693        telemetry::event!("SSH Project Opened");
 9694
 9695        let new_workspace = cx.new(|cx| {
 9696            let mut workspace =
 9697                Workspace::new(Some(workspace_id), project, app_state.clone(), window, cx);
 9698            workspace.update_history(cx);
 9699
 9700            if let Some(ref serialized) = serialized_workspace {
 9701                workspace.centered_layout = serialized.centered_layout;
 9702            }
 9703
 9704            workspace
 9705        });
 9706
 9707        multi_workspace.activate(new_workspace.clone(), window, cx);
 9708        new_workspace
 9709    })?;
 9710
 9711    let items = window
 9712        .update(cx, |_, window, cx| {
 9713            window.activate_window();
 9714            workspace.update(cx, |_workspace, cx| {
 9715                open_items(serialized_workspace, project_paths_to_open, window, cx)
 9716            })
 9717        })?
 9718        .await?;
 9719
 9720    workspace.update(cx, |workspace, cx| {
 9721        for error in project_path_errors {
 9722            if error.error_code() == proto::ErrorCode::DevServerProjectPathDoesNotExist {
 9723                if let Some(path) = error.error_tag("path") {
 9724                    workspace.show_error(&anyhow!("'{path}' does not exist"), cx)
 9725                }
 9726            } else {
 9727                workspace.show_error(&error, cx)
 9728            }
 9729        }
 9730    });
 9731
 9732    Ok(items.into_iter().map(|item| item?.ok()).collect())
 9733}
 9734
 9735fn deserialize_remote_project(
 9736    connection_options: RemoteConnectionOptions,
 9737    paths: Vec<PathBuf>,
 9738    cx: &AsyncApp,
 9739) -> Task<Result<(WorkspaceId, Option<SerializedWorkspace>)>> {
 9740    let db = cx.update(|cx| WorkspaceDb::global(cx));
 9741    cx.background_spawn(async move {
 9742        let remote_connection_id = db
 9743            .get_or_create_remote_connection(connection_options)
 9744            .await?;
 9745
 9746        let serialized_workspace = db.remote_workspace_for_roots(&paths, remote_connection_id);
 9747
 9748        let workspace_id = if let Some(workspace_id) =
 9749            serialized_workspace.as_ref().map(|workspace| workspace.id)
 9750        {
 9751            workspace_id
 9752        } else {
 9753            db.next_id().await?
 9754        };
 9755
 9756        Ok((workspace_id, serialized_workspace))
 9757    })
 9758}
 9759
 9760pub fn join_in_room_project(
 9761    project_id: u64,
 9762    follow_user_id: u64,
 9763    app_state: Arc<AppState>,
 9764    cx: &mut App,
 9765) -> Task<Result<()>> {
 9766    let windows = cx.windows();
 9767    cx.spawn(async move |cx| {
 9768        let existing_window_and_workspace: Option<(
 9769            WindowHandle<MultiWorkspace>,
 9770            Entity<Workspace>,
 9771        )> = windows.into_iter().find_map(|window_handle| {
 9772            window_handle
 9773                .downcast::<MultiWorkspace>()
 9774                .and_then(|window_handle| {
 9775                    window_handle
 9776                        .update(cx, |multi_workspace, _window, cx| {
 9777                            for workspace in multi_workspace.workspaces() {
 9778                                if workspace.read(cx).project().read(cx).remote_id()
 9779                                    == Some(project_id)
 9780                                {
 9781                                    return Some((window_handle, workspace.clone()));
 9782                                }
 9783                            }
 9784                            None
 9785                        })
 9786                        .unwrap_or(None)
 9787                })
 9788        });
 9789
 9790        let multi_workspace_window = if let Some((existing_window, target_workspace)) =
 9791            existing_window_and_workspace
 9792        {
 9793            existing_window
 9794                .update(cx, |multi_workspace, window, cx| {
 9795                    multi_workspace.activate(target_workspace, window, cx);
 9796                })
 9797                .ok();
 9798            existing_window
 9799        } else {
 9800            let active_call = cx.update(|cx| GlobalAnyActiveCall::global(cx).clone());
 9801            let project = cx
 9802                .update(|cx| {
 9803                    active_call.0.join_project(
 9804                        project_id,
 9805                        app_state.languages.clone(),
 9806                        app_state.fs.clone(),
 9807                        cx,
 9808                    )
 9809                })
 9810                .await?;
 9811
 9812            let window_bounds_override = window_bounds_env_override();
 9813            cx.update(|cx| {
 9814                let mut options = (app_state.build_window_options)(None, cx);
 9815                options.window_bounds = window_bounds_override.map(WindowBounds::Windowed);
 9816                cx.open_window(options, |window, cx| {
 9817                    let workspace = cx.new(|cx| {
 9818                        Workspace::new(Default::default(), project, app_state.clone(), window, cx)
 9819                    });
 9820                    cx.new(|cx| MultiWorkspace::new(workspace, window, cx))
 9821                })
 9822            })?
 9823        };
 9824
 9825        multi_workspace_window.update(cx, |multi_workspace, window, cx| {
 9826            cx.activate(true);
 9827            window.activate_window();
 9828
 9829            // We set the active workspace above, so this is the correct workspace.
 9830            let workspace = multi_workspace.workspace().clone();
 9831            workspace.update(cx, |workspace, cx| {
 9832                let follow_peer_id = GlobalAnyActiveCall::try_global(cx)
 9833                    .and_then(|call| call.0.peer_id_for_user_in_room(follow_user_id, cx))
 9834                    .or_else(|| {
 9835                        // If we couldn't follow the given user, follow the host instead.
 9836                        let collaborator = workspace
 9837                            .project()
 9838                            .read(cx)
 9839                            .collaborators()
 9840                            .values()
 9841                            .find(|collaborator| collaborator.is_host)?;
 9842                        Some(collaborator.peer_id)
 9843                    });
 9844
 9845                if let Some(follow_peer_id) = follow_peer_id {
 9846                    workspace.follow(follow_peer_id, window, cx);
 9847                }
 9848            });
 9849        })?;
 9850
 9851        anyhow::Ok(())
 9852    })
 9853}
 9854
 9855pub fn reload(cx: &mut App) {
 9856    let should_confirm = WorkspaceSettings::get_global(cx).confirm_quit;
 9857    let mut workspace_windows = cx
 9858        .windows()
 9859        .into_iter()
 9860        .filter_map(|window| window.downcast::<MultiWorkspace>())
 9861        .collect::<Vec<_>>();
 9862
 9863    // If multiple windows have unsaved changes, and need a save prompt,
 9864    // prompt in the active window before switching to a different window.
 9865    workspace_windows.sort_by_key(|window| window.is_active(cx) == Some(false));
 9866
 9867    let mut prompt = None;
 9868    if let (true, Some(window)) = (should_confirm, workspace_windows.first()) {
 9869        prompt = window
 9870            .update(cx, |_, window, cx| {
 9871                window.prompt(
 9872                    PromptLevel::Info,
 9873                    "Are you sure you want to restart?",
 9874                    None,
 9875                    &["Restart", "Cancel"],
 9876                    cx,
 9877                )
 9878            })
 9879            .ok();
 9880    }
 9881
 9882    cx.spawn(async move |cx| {
 9883        if let Some(prompt) = prompt {
 9884            let answer = prompt.await?;
 9885            if answer != 0 {
 9886                return anyhow::Ok(());
 9887            }
 9888        }
 9889
 9890        // If the user cancels any save prompt, then keep the app open.
 9891        for window in workspace_windows {
 9892            if let Ok(should_close) = window.update(cx, |multi_workspace, window, cx| {
 9893                let workspace = multi_workspace.workspace().clone();
 9894                workspace.update(cx, |workspace, cx| {
 9895                    workspace.prepare_to_close(CloseIntent::Quit, window, cx)
 9896                })
 9897            }) && !should_close.await?
 9898            {
 9899                return anyhow::Ok(());
 9900            }
 9901        }
 9902        cx.update(|cx| cx.restart());
 9903        anyhow::Ok(())
 9904    })
 9905    .detach_and_log_err(cx);
 9906}
 9907
 9908fn parse_pixel_position_env_var(value: &str) -> Option<Point<Pixels>> {
 9909    let mut parts = value.split(',');
 9910    let x: usize = parts.next()?.parse().ok()?;
 9911    let y: usize = parts.next()?.parse().ok()?;
 9912    Some(point(px(x as f32), px(y as f32)))
 9913}
 9914
 9915fn parse_pixel_size_env_var(value: &str) -> Option<Size<Pixels>> {
 9916    let mut parts = value.split(',');
 9917    let width: usize = parts.next()?.parse().ok()?;
 9918    let height: usize = parts.next()?.parse().ok()?;
 9919    Some(size(px(width as f32), px(height as f32)))
 9920}
 9921
 9922/// Add client-side decorations (rounded corners, shadows, resize handling) when
 9923/// appropriate.
 9924///
 9925/// The `border_radius_tiling` parameter allows overriding which corners get
 9926/// rounded, independently of the actual window tiling state. This is used
 9927/// specifically for the workspace switcher sidebar: when the sidebar is open,
 9928/// we want square corners on the left (so the sidebar appears flush with the
 9929/// window edge) but we still need the shadow padding for proper visual
 9930/// appearance. Unlike actual window tiling, this only affects border radius -
 9931/// not padding or shadows.
 9932pub fn client_side_decorations(
 9933    element: impl IntoElement,
 9934    window: &mut Window,
 9935    cx: &mut App,
 9936    border_radius_tiling: Tiling,
 9937) -> Stateful<Div> {
 9938    const BORDER_SIZE: Pixels = px(1.0);
 9939    let decorations = window.window_decorations();
 9940    let tiling = match decorations {
 9941        Decorations::Server => Tiling::default(),
 9942        Decorations::Client { tiling } => tiling,
 9943    };
 9944
 9945    match decorations {
 9946        Decorations::Client { .. } => window.set_client_inset(theme::CLIENT_SIDE_DECORATION_SHADOW),
 9947        Decorations::Server => window.set_client_inset(px(0.0)),
 9948    }
 9949
 9950    struct GlobalResizeEdge(ResizeEdge);
 9951    impl Global for GlobalResizeEdge {}
 9952
 9953    div()
 9954        .id("window-backdrop")
 9955        .bg(transparent_black())
 9956        .map(|div| match decorations {
 9957            Decorations::Server => div,
 9958            Decorations::Client { .. } => div
 9959                .when(
 9960                    !(tiling.top
 9961                        || tiling.right
 9962                        || border_radius_tiling.top
 9963                        || border_radius_tiling.right),
 9964                    |div| div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING),
 9965                )
 9966                .when(
 9967                    !(tiling.top
 9968                        || tiling.left
 9969                        || border_radius_tiling.top
 9970                        || border_radius_tiling.left),
 9971                    |div| div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING),
 9972                )
 9973                .when(
 9974                    !(tiling.bottom
 9975                        || tiling.right
 9976                        || border_radius_tiling.bottom
 9977                        || border_radius_tiling.right),
 9978                    |div| div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING),
 9979                )
 9980                .when(
 9981                    !(tiling.bottom
 9982                        || tiling.left
 9983                        || border_radius_tiling.bottom
 9984                        || border_radius_tiling.left),
 9985                    |div| div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING),
 9986                )
 9987                .when(!tiling.top, |div| {
 9988                    div.pt(theme::CLIENT_SIDE_DECORATION_SHADOW)
 9989                })
 9990                .when(!tiling.bottom, |div| {
 9991                    div.pb(theme::CLIENT_SIDE_DECORATION_SHADOW)
 9992                })
 9993                .when(!tiling.left, |div| {
 9994                    div.pl(theme::CLIENT_SIDE_DECORATION_SHADOW)
 9995                })
 9996                .when(!tiling.right, |div| {
 9997                    div.pr(theme::CLIENT_SIDE_DECORATION_SHADOW)
 9998                })
 9999                .on_mouse_move(move |e, window, cx| {
10000                    let size = window.window_bounds().get_bounds().size;
10001                    let pos = e.position;
10002
10003                    let new_edge =
10004                        resize_edge(pos, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling);
10005
10006                    let edge = cx.try_global::<GlobalResizeEdge>();
10007                    if new_edge != edge.map(|edge| edge.0) {
10008                        window
10009                            .window_handle()
10010                            .update(cx, |workspace, _, cx| {
10011                                cx.notify(workspace.entity_id());
10012                            })
10013                            .ok();
10014                    }
10015                })
10016                .on_mouse_down(MouseButton::Left, move |e, window, _| {
10017                    let size = window.window_bounds().get_bounds().size;
10018                    let pos = e.position;
10019
10020                    let edge = match resize_edge(
10021                        pos,
10022                        theme::CLIENT_SIDE_DECORATION_SHADOW,
10023                        size,
10024                        tiling,
10025                    ) {
10026                        Some(value) => value,
10027                        None => return,
10028                    };
10029
10030                    window.start_window_resize(edge);
10031                }),
10032        })
10033        .size_full()
10034        .child(
10035            div()
10036                .cursor(CursorStyle::Arrow)
10037                .map(|div| match decorations {
10038                    Decorations::Server => div,
10039                    Decorations::Client { .. } => div
10040                        .border_color(cx.theme().colors().border)
10041                        .when(
10042                            !(tiling.top
10043                                || tiling.right
10044                                || border_radius_tiling.top
10045                                || border_radius_tiling.right),
10046                            |div| div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING),
10047                        )
10048                        .when(
10049                            !(tiling.top
10050                                || tiling.left
10051                                || border_radius_tiling.top
10052                                || border_radius_tiling.left),
10053                            |div| div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING),
10054                        )
10055                        .when(
10056                            !(tiling.bottom
10057                                || tiling.right
10058                                || border_radius_tiling.bottom
10059                                || border_radius_tiling.right),
10060                            |div| div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING),
10061                        )
10062                        .when(
10063                            !(tiling.bottom
10064                                || tiling.left
10065                                || border_radius_tiling.bottom
10066                                || border_radius_tiling.left),
10067                            |div| div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING),
10068                        )
10069                        .when(!tiling.top, |div| div.border_t(BORDER_SIZE))
10070                        .when(!tiling.bottom, |div| div.border_b(BORDER_SIZE))
10071                        .when(!tiling.left, |div| div.border_l(BORDER_SIZE))
10072                        .when(!tiling.right, |div| div.border_r(BORDER_SIZE))
10073                        .when(!tiling.is_tiled(), |div| {
10074                            div.shadow(vec![gpui::BoxShadow {
10075                                color: Hsla {
10076                                    h: 0.,
10077                                    s: 0.,
10078                                    l: 0.,
10079                                    a: 0.4,
10080                                },
10081                                blur_radius: theme::CLIENT_SIDE_DECORATION_SHADOW / 2.,
10082                                spread_radius: px(0.),
10083                                offset: point(px(0.0), px(0.0)),
10084                            }])
10085                        }),
10086                })
10087                .on_mouse_move(|_e, _, cx| {
10088                    cx.stop_propagation();
10089                })
10090                .size_full()
10091                .child(element),
10092        )
10093        .map(|div| match decorations {
10094            Decorations::Server => div,
10095            Decorations::Client { tiling, .. } => div.child(
10096                canvas(
10097                    |_bounds, window, _| {
10098                        window.insert_hitbox(
10099                            Bounds::new(
10100                                point(px(0.0), px(0.0)),
10101                                window.window_bounds().get_bounds().size,
10102                            ),
10103                            HitboxBehavior::Normal,
10104                        )
10105                    },
10106                    move |_bounds, hitbox, window, cx| {
10107                        let mouse = window.mouse_position();
10108                        let size = window.window_bounds().get_bounds().size;
10109                        let Some(edge) =
10110                            resize_edge(mouse, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling)
10111                        else {
10112                            return;
10113                        };
10114                        cx.set_global(GlobalResizeEdge(edge));
10115                        window.set_cursor_style(
10116                            match edge {
10117                                ResizeEdge::Top | ResizeEdge::Bottom => CursorStyle::ResizeUpDown,
10118                                ResizeEdge::Left | ResizeEdge::Right => {
10119                                    CursorStyle::ResizeLeftRight
10120                                }
10121                                ResizeEdge::TopLeft | ResizeEdge::BottomRight => {
10122                                    CursorStyle::ResizeUpLeftDownRight
10123                                }
10124                                ResizeEdge::TopRight | ResizeEdge::BottomLeft => {
10125                                    CursorStyle::ResizeUpRightDownLeft
10126                                }
10127                            },
10128                            &hitbox,
10129                        );
10130                    },
10131                )
10132                .size_full()
10133                .absolute(),
10134            ),
10135        })
10136}
10137
10138fn resize_edge(
10139    pos: Point<Pixels>,
10140    shadow_size: Pixels,
10141    window_size: Size<Pixels>,
10142    tiling: Tiling,
10143) -> Option<ResizeEdge> {
10144    let bounds = Bounds::new(Point::default(), window_size).inset(shadow_size * 1.5);
10145    if bounds.contains(&pos) {
10146        return None;
10147    }
10148
10149    let corner_size = size(shadow_size * 1.5, shadow_size * 1.5);
10150    let top_left_bounds = Bounds::new(Point::new(px(0.), px(0.)), corner_size);
10151    if !tiling.top && top_left_bounds.contains(&pos) {
10152        return Some(ResizeEdge::TopLeft);
10153    }
10154
10155    let top_right_bounds = Bounds::new(
10156        Point::new(window_size.width - corner_size.width, px(0.)),
10157        corner_size,
10158    );
10159    if !tiling.top && top_right_bounds.contains(&pos) {
10160        return Some(ResizeEdge::TopRight);
10161    }
10162
10163    let bottom_left_bounds = Bounds::new(
10164        Point::new(px(0.), window_size.height - corner_size.height),
10165        corner_size,
10166    );
10167    if !tiling.bottom && bottom_left_bounds.contains(&pos) {
10168        return Some(ResizeEdge::BottomLeft);
10169    }
10170
10171    let bottom_right_bounds = Bounds::new(
10172        Point::new(
10173            window_size.width - corner_size.width,
10174            window_size.height - corner_size.height,
10175        ),
10176        corner_size,
10177    );
10178    if !tiling.bottom && bottom_right_bounds.contains(&pos) {
10179        return Some(ResizeEdge::BottomRight);
10180    }
10181
10182    if !tiling.top && pos.y < shadow_size {
10183        Some(ResizeEdge::Top)
10184    } else if !tiling.bottom && pos.y > window_size.height - shadow_size {
10185        Some(ResizeEdge::Bottom)
10186    } else if !tiling.left && pos.x < shadow_size {
10187        Some(ResizeEdge::Left)
10188    } else if !tiling.right && pos.x > window_size.width - shadow_size {
10189        Some(ResizeEdge::Right)
10190    } else {
10191        None
10192    }
10193}
10194
10195fn join_pane_into_active(
10196    active_pane: &Entity<Pane>,
10197    pane: &Entity<Pane>,
10198    window: &mut Window,
10199    cx: &mut App,
10200) {
10201    if pane == active_pane {
10202    } else if pane.read(cx).items_len() == 0 {
10203        pane.update(cx, |_, cx| {
10204            cx.emit(pane::Event::Remove {
10205                focus_on_pane: None,
10206            });
10207        })
10208    } else {
10209        move_all_items(pane, active_pane, window, cx);
10210    }
10211}
10212
10213fn move_all_items(
10214    from_pane: &Entity<Pane>,
10215    to_pane: &Entity<Pane>,
10216    window: &mut Window,
10217    cx: &mut App,
10218) {
10219    let destination_is_different = from_pane != to_pane;
10220    let mut moved_items = 0;
10221    for (item_ix, item_handle) in from_pane
10222        .read(cx)
10223        .items()
10224        .enumerate()
10225        .map(|(ix, item)| (ix, item.clone()))
10226        .collect::<Vec<_>>()
10227    {
10228        let ix = item_ix - moved_items;
10229        if destination_is_different {
10230            // Close item from previous pane
10231            from_pane.update(cx, |source, cx| {
10232                source.remove_item_and_focus_on_pane(ix, false, to_pane.clone(), window, cx);
10233            });
10234            moved_items += 1;
10235        }
10236
10237        // This automatically removes duplicate items in the pane
10238        to_pane.update(cx, |destination, cx| {
10239            destination.add_item(item_handle, true, true, None, window, cx);
10240            window.focus(&destination.focus_handle(cx), cx)
10241        });
10242    }
10243}
10244
10245pub fn move_item(
10246    source: &Entity<Pane>,
10247    destination: &Entity<Pane>,
10248    item_id_to_move: EntityId,
10249    destination_index: usize,
10250    activate: bool,
10251    window: &mut Window,
10252    cx: &mut App,
10253) {
10254    let Some((item_ix, item_handle)) = source
10255        .read(cx)
10256        .items()
10257        .enumerate()
10258        .find(|(_, item_handle)| item_handle.item_id() == item_id_to_move)
10259        .map(|(ix, item)| (ix, item.clone()))
10260    else {
10261        // Tab was closed during drag
10262        return;
10263    };
10264
10265    if source != destination {
10266        // Close item from previous pane
10267        source.update(cx, |source, cx| {
10268            source.remove_item_and_focus_on_pane(item_ix, false, destination.clone(), window, cx);
10269        });
10270    }
10271
10272    // This automatically removes duplicate items in the pane
10273    destination.update(cx, |destination, cx| {
10274        destination.add_item_inner(
10275            item_handle,
10276            activate,
10277            activate,
10278            activate,
10279            Some(destination_index),
10280            window,
10281            cx,
10282        );
10283        if activate {
10284            window.focus(&destination.focus_handle(cx), cx)
10285        }
10286    });
10287}
10288
10289pub fn move_active_item(
10290    source: &Entity<Pane>,
10291    destination: &Entity<Pane>,
10292    focus_destination: bool,
10293    close_if_empty: bool,
10294    window: &mut Window,
10295    cx: &mut App,
10296) {
10297    if source == destination {
10298        return;
10299    }
10300    let Some(active_item) = source.read(cx).active_item() else {
10301        return;
10302    };
10303    source.update(cx, |source_pane, cx| {
10304        let item_id = active_item.item_id();
10305        source_pane.remove_item(item_id, false, close_if_empty, window, cx);
10306        destination.update(cx, |target_pane, cx| {
10307            target_pane.add_item(
10308                active_item,
10309                focus_destination,
10310                focus_destination,
10311                Some(target_pane.items_len()),
10312                window,
10313                cx,
10314            );
10315        });
10316    });
10317}
10318
10319pub fn clone_active_item(
10320    workspace_id: Option<WorkspaceId>,
10321    source: &Entity<Pane>,
10322    destination: &Entity<Pane>,
10323    focus_destination: bool,
10324    window: &mut Window,
10325    cx: &mut App,
10326) {
10327    if source == destination {
10328        return;
10329    }
10330    let Some(active_item) = source.read(cx).active_item() else {
10331        return;
10332    };
10333    if !active_item.can_split(cx) {
10334        return;
10335    }
10336    let destination = destination.downgrade();
10337    let task = active_item.clone_on_split(workspace_id, window, cx);
10338    window
10339        .spawn(cx, async move |cx| {
10340            let Some(clone) = task.await else {
10341                return;
10342            };
10343            destination
10344                .update_in(cx, |target_pane, window, cx| {
10345                    target_pane.add_item(
10346                        clone,
10347                        focus_destination,
10348                        focus_destination,
10349                        Some(target_pane.items_len()),
10350                        window,
10351                        cx,
10352                    );
10353                })
10354                .log_err();
10355        })
10356        .detach();
10357}
10358
10359#[derive(Debug)]
10360pub struct WorkspacePosition {
10361    pub window_bounds: Option<WindowBounds>,
10362    pub display: Option<Uuid>,
10363    pub centered_layout: bool,
10364}
10365
10366pub fn remote_workspace_position_from_db(
10367    connection_options: RemoteConnectionOptions,
10368    paths_to_open: &[PathBuf],
10369    cx: &App,
10370) -> Task<Result<WorkspacePosition>> {
10371    let paths = paths_to_open.to_vec();
10372    let db = WorkspaceDb::global(cx);
10373    let kvp = db::kvp::KeyValueStore::global(cx);
10374
10375    cx.background_spawn(async move {
10376        let remote_connection_id = db
10377            .get_or_create_remote_connection(connection_options)
10378            .await
10379            .context("fetching serialized ssh project")?;
10380        let serialized_workspace = db.remote_workspace_for_roots(&paths, remote_connection_id);
10381
10382        let (window_bounds, display) = if let Some(bounds) = window_bounds_env_override() {
10383            (Some(WindowBounds::Windowed(bounds)), None)
10384        } else {
10385            let restorable_bounds = serialized_workspace
10386                .as_ref()
10387                .and_then(|workspace| {
10388                    Some((workspace.display?, workspace.window_bounds.map(|b| b.0)?))
10389                })
10390                .or_else(|| persistence::read_default_window_bounds(&kvp));
10391
10392            if let Some((serialized_display, serialized_bounds)) = restorable_bounds {
10393                (Some(serialized_bounds), Some(serialized_display))
10394            } else {
10395                (None, None)
10396            }
10397        };
10398
10399        let centered_layout = serialized_workspace
10400            .as_ref()
10401            .map(|w| w.centered_layout)
10402            .unwrap_or(false);
10403
10404        Ok(WorkspacePosition {
10405            window_bounds,
10406            display,
10407            centered_layout,
10408        })
10409    })
10410}
10411
10412pub fn with_active_or_new_workspace(
10413    cx: &mut App,
10414    f: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send + 'static,
10415) {
10416    match cx
10417        .active_window()
10418        .and_then(|w| w.downcast::<MultiWorkspace>())
10419    {
10420        Some(multi_workspace) => {
10421            cx.defer(move |cx| {
10422                multi_workspace
10423                    .update(cx, |multi_workspace, window, cx| {
10424                        let workspace = multi_workspace.workspace().clone();
10425                        workspace.update(cx, |workspace, cx| f(workspace, window, cx));
10426                    })
10427                    .log_err();
10428            });
10429        }
10430        None => {
10431            let app_state = AppState::global(cx);
10432            open_new(
10433                OpenOptions::default(),
10434                app_state,
10435                cx,
10436                move |workspace, window, cx| f(workspace, window, cx),
10437            )
10438            .detach_and_log_err(cx);
10439        }
10440    }
10441}
10442
10443/// Reads a panel's pixel size from its legacy KVP format and deletes the legacy
10444/// key. This migration path only runs once per panel per workspace.
10445fn load_legacy_panel_size(
10446    panel_key: &str,
10447    dock_position: DockPosition,
10448    workspace: &Workspace,
10449    cx: &mut App,
10450) -> Option<Pixels> {
10451    #[derive(Deserialize)]
10452    struct LegacyPanelState {
10453        #[serde(default)]
10454        width: Option<Pixels>,
10455        #[serde(default)]
10456        height: Option<Pixels>,
10457    }
10458
10459    let workspace_id = workspace
10460        .database_id()
10461        .map(|id| i64::from(id).to_string())
10462        .or_else(|| workspace.session_id())?;
10463
10464    let legacy_key = match panel_key {
10465        "ProjectPanel" => {
10466            format!("{}-{:?}", "ProjectPanel", workspace_id)
10467        }
10468        "OutlinePanel" => {
10469            format!("{}-{:?}", "OutlinePanel", workspace_id)
10470        }
10471        "GitPanel" => {
10472            format!("{}-{:?}", "GitPanel", workspace_id)
10473        }
10474        "TerminalPanel" => {
10475            format!("{:?}-{:?}", "TerminalPanel", workspace_id)
10476        }
10477        _ => return None,
10478    };
10479
10480    let kvp = db::kvp::KeyValueStore::global(cx);
10481    let json = kvp.read_kvp(&legacy_key).log_err().flatten()?;
10482    let state = serde_json::from_str::<LegacyPanelState>(&json).log_err()?;
10483    let size = match dock_position {
10484        DockPosition::Bottom => state.height,
10485        DockPosition::Left | DockPosition::Right => state.width,
10486    }?;
10487
10488    cx.background_spawn(async move { kvp.delete_kvp(legacy_key).await })
10489        .detach_and_log_err(cx);
10490
10491    Some(size)
10492}
10493
10494#[cfg(test)]
10495mod tests {
10496    use std::{cell::RefCell, rc::Rc, sync::Arc, time::Duration};
10497
10498    use super::*;
10499    use crate::{
10500        dock::{PanelEvent, test::TestPanel},
10501        item::{
10502            ItemBufferKind, ItemEvent,
10503            test::{TestItem, TestProjectItem},
10504        },
10505    };
10506    use fs::FakeFs;
10507    use gpui::{
10508        DismissEvent, Empty, EventEmitter, FocusHandle, Focusable, Render, TestAppContext,
10509        UpdateGlobal, VisualTestContext, px,
10510    };
10511    use project::{Project, ProjectEntryId};
10512    use serde_json::json;
10513    use settings::SettingsStore;
10514    use util::path;
10515    use util::rel_path::rel_path;
10516
10517    #[gpui::test]
10518    async fn test_tab_disambiguation(cx: &mut TestAppContext) {
10519        init_test(cx);
10520
10521        let fs = FakeFs::new(cx.executor());
10522        let project = Project::test(fs, [], cx).await;
10523        let (workspace, cx) =
10524            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10525
10526        // Adding an item with no ambiguity renders the tab without detail.
10527        let item1 = cx.new(|cx| {
10528            let mut item = TestItem::new(cx);
10529            item.tab_descriptions = Some(vec!["c", "b1/c", "a/b1/c"]);
10530            item
10531        });
10532        workspace.update_in(cx, |workspace, window, cx| {
10533            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
10534        });
10535        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(0)));
10536
10537        // Adding an item that creates ambiguity increases the level of detail on
10538        // both tabs.
10539        let item2 = cx.new_window_entity(|_window, cx| {
10540            let mut item = TestItem::new(cx);
10541            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
10542            item
10543        });
10544        workspace.update_in(cx, |workspace, window, cx| {
10545            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
10546        });
10547        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
10548        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
10549
10550        // Adding an item that creates ambiguity increases the level of detail only
10551        // on the ambiguous tabs. In this case, the ambiguity can't be resolved so
10552        // we stop at the highest detail available.
10553        let item3 = cx.new(|cx| {
10554            let mut item = TestItem::new(cx);
10555            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
10556            item
10557        });
10558        workspace.update_in(cx, |workspace, window, cx| {
10559            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
10560        });
10561        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
10562        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
10563        item3.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
10564    }
10565
10566    #[gpui::test]
10567    async fn test_tracking_active_path(cx: &mut TestAppContext) {
10568        init_test(cx);
10569
10570        let fs = FakeFs::new(cx.executor());
10571        fs.insert_tree(
10572            "/root1",
10573            json!({
10574                "one.txt": "",
10575                "two.txt": "",
10576            }),
10577        )
10578        .await;
10579        fs.insert_tree(
10580            "/root2",
10581            json!({
10582                "three.txt": "",
10583            }),
10584        )
10585        .await;
10586
10587        let project = Project::test(fs, ["root1".as_ref()], cx).await;
10588        let (workspace, cx) =
10589            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10590        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10591        let worktree_id = project.update(cx, |project, cx| {
10592            project.worktrees(cx).next().unwrap().read(cx).id()
10593        });
10594
10595        let item1 = cx.new(|cx| {
10596            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
10597        });
10598        let item2 = cx.new(|cx| {
10599            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "two.txt", cx)])
10600        });
10601
10602        // Add an item to an empty pane
10603        workspace.update_in(cx, |workspace, window, cx| {
10604            workspace.add_item_to_active_pane(Box::new(item1), None, true, window, cx)
10605        });
10606        project.update(cx, |project, cx| {
10607            assert_eq!(
10608                project.active_entry(),
10609                project
10610                    .entry_for_path(&(worktree_id, rel_path("one.txt")).into(), cx)
10611                    .map(|e| e.id)
10612            );
10613        });
10614        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
10615
10616        // Add a second item to a non-empty pane
10617        workspace.update_in(cx, |workspace, window, cx| {
10618            workspace.add_item_to_active_pane(Box::new(item2), None, true, window, cx)
10619        });
10620        assert_eq!(cx.window_title().as_deref(), Some("root1 — two.txt"));
10621        project.update(cx, |project, cx| {
10622            assert_eq!(
10623                project.active_entry(),
10624                project
10625                    .entry_for_path(&(worktree_id, rel_path("two.txt")).into(), cx)
10626                    .map(|e| e.id)
10627            );
10628        });
10629
10630        // Close the active item
10631        pane.update_in(cx, |pane, window, cx| {
10632            pane.close_active_item(&Default::default(), window, cx)
10633        })
10634        .await
10635        .unwrap();
10636        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
10637        project.update(cx, |project, cx| {
10638            assert_eq!(
10639                project.active_entry(),
10640                project
10641                    .entry_for_path(&(worktree_id, rel_path("one.txt")).into(), cx)
10642                    .map(|e| e.id)
10643            );
10644        });
10645
10646        // Add a project folder
10647        project
10648            .update(cx, |project, cx| {
10649                project.find_or_create_worktree("root2", true, cx)
10650            })
10651            .await
10652            .unwrap();
10653        assert_eq!(cx.window_title().as_deref(), Some("root1, root2 — one.txt"));
10654
10655        // Remove a project folder
10656        project.update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
10657        assert_eq!(cx.window_title().as_deref(), Some("root2 — one.txt"));
10658    }
10659
10660    #[gpui::test]
10661    async fn test_close_window(cx: &mut TestAppContext) {
10662        init_test(cx);
10663
10664        let fs = FakeFs::new(cx.executor());
10665        fs.insert_tree("/root", json!({ "one": "" })).await;
10666
10667        let project = Project::test(fs, ["root".as_ref()], cx).await;
10668        let (workspace, cx) =
10669            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10670
10671        // When there are no dirty items, there's nothing to do.
10672        let item1 = cx.new(TestItem::new);
10673        workspace.update_in(cx, |w, window, cx| {
10674            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx)
10675        });
10676        let task = workspace.update_in(cx, |w, window, cx| {
10677            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
10678        });
10679        assert!(task.await.unwrap());
10680
10681        // When there are dirty untitled items, prompt to save each one. If the user
10682        // cancels any prompt, then abort.
10683        let item2 = cx.new(|cx| TestItem::new(cx).with_dirty(true));
10684        let item3 = cx.new(|cx| {
10685            TestItem::new(cx)
10686                .with_dirty(true)
10687                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
10688        });
10689        workspace.update_in(cx, |w, window, cx| {
10690            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
10691            w.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
10692        });
10693        let task = workspace.update_in(cx, |w, window, cx| {
10694            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
10695        });
10696        cx.executor().run_until_parked();
10697        cx.simulate_prompt_answer("Cancel"); // cancel save all
10698        cx.executor().run_until_parked();
10699        assert!(!cx.has_pending_prompt());
10700        assert!(!task.await.unwrap());
10701    }
10702
10703    #[gpui::test]
10704    async fn test_multi_workspace_close_window_multiple_workspaces_cancel(cx: &mut TestAppContext) {
10705        init_test(cx);
10706
10707        let fs = FakeFs::new(cx.executor());
10708        fs.insert_tree("/root", json!({ "one": "" })).await;
10709
10710        let project_a = Project::test(fs.clone(), ["root".as_ref()], cx).await;
10711        let project_b = Project::test(fs, ["root".as_ref()], cx).await;
10712        let multi_workspace_handle =
10713            cx.add_window(|window, cx| MultiWorkspace::test_new(project_a.clone(), window, cx));
10714        cx.run_until_parked();
10715
10716        let workspace_a = multi_workspace_handle
10717            .read_with(cx, |mw, _| mw.workspace().clone())
10718            .unwrap();
10719
10720        let workspace_b = multi_workspace_handle
10721            .update(cx, |mw, window, cx| {
10722                mw.test_add_workspace(project_b, window, cx)
10723            })
10724            .unwrap();
10725
10726        // Activate workspace A
10727        multi_workspace_handle
10728            .update(cx, |mw, window, cx| {
10729                let workspace = mw.workspaces()[0].clone();
10730                mw.activate(workspace, window, cx);
10731            })
10732            .unwrap();
10733
10734        let cx = &mut VisualTestContext::from_window(multi_workspace_handle.into(), cx);
10735
10736        // Workspace A has a clean item
10737        let item_a = cx.new(TestItem::new);
10738        workspace_a.update_in(cx, |w, window, cx| {
10739            w.add_item_to_active_pane(Box::new(item_a.clone()), None, true, window, cx)
10740        });
10741
10742        // Workspace B has a dirty item
10743        let item_b = cx.new(|cx| TestItem::new(cx).with_dirty(true));
10744        workspace_b.update_in(cx, |w, window, cx| {
10745            w.add_item_to_active_pane(Box::new(item_b.clone()), None, true, window, cx)
10746        });
10747
10748        // Verify workspace A is active
10749        multi_workspace_handle
10750            .read_with(cx, |mw, _| {
10751                assert_eq!(mw.active_workspace_index(), 0);
10752            })
10753            .unwrap();
10754
10755        // Dispatch CloseWindow — workspace A will pass, workspace B will prompt
10756        multi_workspace_handle
10757            .update(cx, |mw, window, cx| {
10758                mw.close_window(&CloseWindow, window, cx);
10759            })
10760            .unwrap();
10761        cx.run_until_parked();
10762
10763        // Workspace B should now be active since it has dirty items that need attention
10764        multi_workspace_handle
10765            .read_with(cx, |mw, _| {
10766                assert_eq!(
10767                    mw.active_workspace_index(),
10768                    1,
10769                    "workspace B should be activated when it prompts"
10770                );
10771            })
10772            .unwrap();
10773
10774        // User cancels the save prompt from workspace B
10775        cx.simulate_prompt_answer("Cancel");
10776        cx.run_until_parked();
10777
10778        // Window should still exist because workspace B's close was cancelled
10779        assert!(
10780            multi_workspace_handle.update(cx, |_, _, _| ()).is_ok(),
10781            "window should still exist after cancelling one workspace's close"
10782        );
10783    }
10784
10785    #[gpui::test]
10786    async fn test_close_window_with_serializable_items(cx: &mut TestAppContext) {
10787        init_test(cx);
10788
10789        // Register TestItem as a serializable item
10790        cx.update(|cx| {
10791            register_serializable_item::<TestItem>(cx);
10792        });
10793
10794        let fs = FakeFs::new(cx.executor());
10795        fs.insert_tree("/root", json!({ "one": "" })).await;
10796
10797        let project = Project::test(fs, ["root".as_ref()], cx).await;
10798        let (workspace, cx) =
10799            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10800
10801        // When there are dirty untitled items, but they can serialize, then there is no prompt.
10802        let item1 = cx.new(|cx| {
10803            TestItem::new(cx)
10804                .with_dirty(true)
10805                .with_serialize(|| Some(Task::ready(Ok(()))))
10806        });
10807        let item2 = cx.new(|cx| {
10808            TestItem::new(cx)
10809                .with_dirty(true)
10810                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
10811                .with_serialize(|| Some(Task::ready(Ok(()))))
10812        });
10813        workspace.update_in(cx, |w, window, cx| {
10814            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
10815            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
10816        });
10817        let task = workspace.update_in(cx, |w, window, cx| {
10818            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
10819        });
10820        assert!(task.await.unwrap());
10821    }
10822
10823    #[gpui::test]
10824    async fn test_close_pane_items(cx: &mut TestAppContext) {
10825        init_test(cx);
10826
10827        let fs = FakeFs::new(cx.executor());
10828
10829        let project = Project::test(fs, None, cx).await;
10830        let (workspace, cx) =
10831            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10832
10833        let item1 = cx.new(|cx| {
10834            TestItem::new(cx)
10835                .with_dirty(true)
10836                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10837        });
10838        let item2 = cx.new(|cx| {
10839            TestItem::new(cx)
10840                .with_dirty(true)
10841                .with_conflict(true)
10842                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10843        });
10844        let item3 = cx.new(|cx| {
10845            TestItem::new(cx)
10846                .with_dirty(true)
10847                .with_conflict(true)
10848                .with_project_items(&[dirty_project_item(3, "3.txt", cx)])
10849        });
10850        let item4 = cx.new(|cx| {
10851            TestItem::new(cx).with_dirty(true).with_project_items(&[{
10852                let project_item = TestProjectItem::new_untitled(cx);
10853                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
10854                project_item
10855            }])
10856        });
10857        let pane = workspace.update_in(cx, |workspace, window, cx| {
10858            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
10859            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
10860            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
10861            workspace.add_item_to_active_pane(Box::new(item4.clone()), None, true, window, cx);
10862            workspace.active_pane().clone()
10863        });
10864
10865        let close_items = pane.update_in(cx, |pane, window, cx| {
10866            pane.activate_item(1, true, true, window, cx);
10867            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
10868            let item1_id = item1.item_id();
10869            let item3_id = item3.item_id();
10870            let item4_id = item4.item_id();
10871            pane.close_items(window, cx, SaveIntent::Close, &move |id| {
10872                [item1_id, item3_id, item4_id].contains(&id)
10873            })
10874        });
10875        cx.executor().run_until_parked();
10876
10877        assert!(cx.has_pending_prompt());
10878        cx.simulate_prompt_answer("Save all");
10879
10880        cx.executor().run_until_parked();
10881
10882        // Item 1 is saved. There's a prompt to save item 3.
10883        pane.update(cx, |pane, cx| {
10884            assert_eq!(item1.read(cx).save_count, 1);
10885            assert_eq!(item1.read(cx).save_as_count, 0);
10886            assert_eq!(item1.read(cx).reload_count, 0);
10887            assert_eq!(pane.items_len(), 3);
10888            assert_eq!(pane.active_item().unwrap().item_id(), item3.item_id());
10889        });
10890        assert!(cx.has_pending_prompt());
10891
10892        // Cancel saving item 3.
10893        cx.simulate_prompt_answer("Discard");
10894        cx.executor().run_until_parked();
10895
10896        // Item 3 is reloaded. There's a prompt to save item 4.
10897        pane.update(cx, |pane, cx| {
10898            assert_eq!(item3.read(cx).save_count, 0);
10899            assert_eq!(item3.read(cx).save_as_count, 0);
10900            assert_eq!(item3.read(cx).reload_count, 1);
10901            assert_eq!(pane.items_len(), 2);
10902            assert_eq!(pane.active_item().unwrap().item_id(), item4.item_id());
10903        });
10904
10905        // There's a prompt for a path for item 4.
10906        cx.simulate_new_path_selection(|_| Some(Default::default()));
10907        close_items.await.unwrap();
10908
10909        // The requested items are closed.
10910        pane.update(cx, |pane, cx| {
10911            assert_eq!(item4.read(cx).save_count, 0);
10912            assert_eq!(item4.read(cx).save_as_count, 1);
10913            assert_eq!(item4.read(cx).reload_count, 0);
10914            assert_eq!(pane.items_len(), 1);
10915            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
10916        });
10917    }
10918
10919    #[gpui::test]
10920    async fn test_prompting_to_save_only_on_last_item_for_entry(cx: &mut TestAppContext) {
10921        init_test(cx);
10922
10923        let fs = FakeFs::new(cx.executor());
10924        let project = Project::test(fs, [], cx).await;
10925        let (workspace, cx) =
10926            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10927
10928        // Create several workspace items with single project entries, and two
10929        // workspace items with multiple project entries.
10930        let single_entry_items = (0..=4)
10931            .map(|project_entry_id| {
10932                cx.new(|cx| {
10933                    TestItem::new(cx)
10934                        .with_dirty(true)
10935                        .with_project_items(&[dirty_project_item(
10936                            project_entry_id,
10937                            &format!("{project_entry_id}.txt"),
10938                            cx,
10939                        )])
10940                })
10941            })
10942            .collect::<Vec<_>>();
10943        let item_2_3 = cx.new(|cx| {
10944            TestItem::new(cx)
10945                .with_dirty(true)
10946                .with_buffer_kind(ItemBufferKind::Multibuffer)
10947                .with_project_items(&[
10948                    single_entry_items[2].read(cx).project_items[0].clone(),
10949                    single_entry_items[3].read(cx).project_items[0].clone(),
10950                ])
10951        });
10952        let item_3_4 = cx.new(|cx| {
10953            TestItem::new(cx)
10954                .with_dirty(true)
10955                .with_buffer_kind(ItemBufferKind::Multibuffer)
10956                .with_project_items(&[
10957                    single_entry_items[3].read(cx).project_items[0].clone(),
10958                    single_entry_items[4].read(cx).project_items[0].clone(),
10959                ])
10960        });
10961
10962        // Create two panes that contain the following project entries:
10963        //   left pane:
10964        //     multi-entry items:   (2, 3)
10965        //     single-entry items:  0, 2, 3, 4
10966        //   right pane:
10967        //     single-entry items:  4, 1
10968        //     multi-entry items:   (3, 4)
10969        let (left_pane, right_pane) = workspace.update_in(cx, |workspace, window, cx| {
10970            let left_pane = workspace.active_pane().clone();
10971            workspace.add_item_to_active_pane(Box::new(item_2_3.clone()), None, true, window, cx);
10972            workspace.add_item_to_active_pane(
10973                single_entry_items[0].boxed_clone(),
10974                None,
10975                true,
10976                window,
10977                cx,
10978            );
10979            workspace.add_item_to_active_pane(
10980                single_entry_items[2].boxed_clone(),
10981                None,
10982                true,
10983                window,
10984                cx,
10985            );
10986            workspace.add_item_to_active_pane(
10987                single_entry_items[3].boxed_clone(),
10988                None,
10989                true,
10990                window,
10991                cx,
10992            );
10993            workspace.add_item_to_active_pane(
10994                single_entry_items[4].boxed_clone(),
10995                None,
10996                true,
10997                window,
10998                cx,
10999            );
11000
11001            let right_pane =
11002                workspace.split_and_clone(left_pane.clone(), SplitDirection::Right, window, cx);
11003
11004            let boxed_clone = single_entry_items[1].boxed_clone();
11005            let right_pane = window.spawn(cx, async move |cx| {
11006                right_pane.await.inspect(|right_pane| {
11007                    right_pane
11008                        .update_in(cx, |pane, window, cx| {
11009                            pane.add_item(boxed_clone, true, true, None, window, cx);
11010                            pane.add_item(Box::new(item_3_4.clone()), true, true, None, window, cx);
11011                        })
11012                        .unwrap();
11013                })
11014            });
11015
11016            (left_pane, right_pane)
11017        });
11018        let right_pane = right_pane.await.unwrap();
11019        cx.focus(&right_pane);
11020
11021        let close = right_pane.update_in(cx, |pane, window, cx| {
11022            pane.close_all_items(&CloseAllItems::default(), window, cx)
11023                .unwrap()
11024        });
11025        cx.executor().run_until_parked();
11026
11027        let msg = cx.pending_prompt().unwrap().0;
11028        assert!(msg.contains("1.txt"));
11029        assert!(!msg.contains("2.txt"));
11030        assert!(!msg.contains("3.txt"));
11031        assert!(!msg.contains("4.txt"));
11032
11033        // With best-effort close, cancelling item 1 keeps it open but items 4
11034        // and (3,4) still close since their entries exist in left pane.
11035        cx.simulate_prompt_answer("Cancel");
11036        close.await;
11037
11038        right_pane.read_with(cx, |pane, _| {
11039            assert_eq!(pane.items_len(), 1);
11040        });
11041
11042        // Remove item 3 from left pane, making (2,3) the only item with entry 3.
11043        left_pane
11044            .update_in(cx, |left_pane, window, cx| {
11045                left_pane.close_item_by_id(
11046                    single_entry_items[3].entity_id(),
11047                    SaveIntent::Skip,
11048                    window,
11049                    cx,
11050                )
11051            })
11052            .await
11053            .unwrap();
11054
11055        let close = left_pane.update_in(cx, |pane, window, cx| {
11056            pane.close_all_items(&CloseAllItems::default(), window, cx)
11057                .unwrap()
11058        });
11059        cx.executor().run_until_parked();
11060
11061        let details = cx.pending_prompt().unwrap().1;
11062        assert!(details.contains("0.txt"));
11063        assert!(details.contains("3.txt"));
11064        assert!(details.contains("4.txt"));
11065        // Ideally 2.txt wouldn't appear since entry 2 still exists in item 2.
11066        // But we can only save whole items, so saving (2,3) for entry 3 includes 2.
11067        // assert!(!details.contains("2.txt"));
11068
11069        cx.simulate_prompt_answer("Save all");
11070        cx.executor().run_until_parked();
11071        close.await;
11072
11073        left_pane.read_with(cx, |pane, _| {
11074            assert_eq!(pane.items_len(), 0);
11075        });
11076    }
11077
11078    #[gpui::test]
11079    async fn test_autosave(cx: &mut gpui::TestAppContext) {
11080        init_test(cx);
11081
11082        let fs = FakeFs::new(cx.executor());
11083        let project = Project::test(fs, [], cx).await;
11084        let (workspace, cx) =
11085            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11086        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11087
11088        let item = cx.new(|cx| {
11089            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
11090        });
11091        let item_id = item.entity_id();
11092        workspace.update_in(cx, |workspace, window, cx| {
11093            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
11094        });
11095
11096        // Autosave on window change.
11097        item.update(cx, |item, cx| {
11098            SettingsStore::update_global(cx, |settings, cx| {
11099                settings.update_user_settings(cx, |settings| {
11100                    settings.workspace.autosave = Some(AutosaveSetting::OnWindowChange);
11101                })
11102            });
11103            item.is_dirty = true;
11104        });
11105
11106        // Deactivating the window saves the file.
11107        cx.deactivate_window();
11108        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
11109
11110        // Re-activating the window doesn't save the file.
11111        cx.update(|window, _| window.activate_window());
11112        cx.executor().run_until_parked();
11113        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
11114
11115        // Autosave on focus change.
11116        item.update_in(cx, |item, window, cx| {
11117            cx.focus_self(window);
11118            SettingsStore::update_global(cx, |settings, cx| {
11119                settings.update_user_settings(cx, |settings| {
11120                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
11121                })
11122            });
11123            item.is_dirty = true;
11124        });
11125        // Blurring the item saves the file.
11126        item.update_in(cx, |_, window, _| window.blur());
11127        cx.executor().run_until_parked();
11128        item.read_with(cx, |item, _| assert_eq!(item.save_count, 2));
11129
11130        // Deactivating the window still saves the file.
11131        item.update_in(cx, |item, window, cx| {
11132            cx.focus_self(window);
11133            item.is_dirty = true;
11134        });
11135        cx.deactivate_window();
11136        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
11137
11138        // Autosave after delay.
11139        item.update(cx, |item, cx| {
11140            SettingsStore::update_global(cx, |settings, cx| {
11141                settings.update_user_settings(cx, |settings| {
11142                    settings.workspace.autosave = Some(AutosaveSetting::AfterDelay {
11143                        milliseconds: 500.into(),
11144                    });
11145                })
11146            });
11147            item.is_dirty = true;
11148            cx.emit(ItemEvent::Edit);
11149        });
11150
11151        // Delay hasn't fully expired, so the file is still dirty and unsaved.
11152        cx.executor().advance_clock(Duration::from_millis(250));
11153        item.read_with(cx, |item, _| assert_eq!(item.save_count, 3));
11154
11155        // After delay expires, the file is saved.
11156        cx.executor().advance_clock(Duration::from_millis(250));
11157        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
11158
11159        // Autosave after delay, should save earlier than delay if tab is closed
11160        item.update(cx, |item, cx| {
11161            item.is_dirty = true;
11162            cx.emit(ItemEvent::Edit);
11163        });
11164        cx.executor().advance_clock(Duration::from_millis(250));
11165        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
11166
11167        // // Ensure auto save with delay saves the item on close, even if the timer hasn't yet run out.
11168        pane.update_in(cx, |pane, window, cx| {
11169            pane.close_items(window, cx, SaveIntent::Close, &move |id| id == item_id)
11170        })
11171        .await
11172        .unwrap();
11173        assert!(!cx.has_pending_prompt());
11174        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
11175
11176        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
11177        workspace.update_in(cx, |workspace, window, cx| {
11178            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
11179        });
11180        item.update_in(cx, |item, _window, cx| {
11181            item.is_dirty = true;
11182            for project_item in &mut item.project_items {
11183                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
11184            }
11185        });
11186        cx.run_until_parked();
11187        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
11188
11189        // Autosave on focus change, ensuring closing the tab counts as such.
11190        item.update(cx, |item, cx| {
11191            SettingsStore::update_global(cx, |settings, cx| {
11192                settings.update_user_settings(cx, |settings| {
11193                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
11194                })
11195            });
11196            item.is_dirty = true;
11197            for project_item in &mut item.project_items {
11198                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
11199            }
11200        });
11201
11202        pane.update_in(cx, |pane, window, cx| {
11203            pane.close_items(window, cx, SaveIntent::Close, &move |id| id == item_id)
11204        })
11205        .await
11206        .unwrap();
11207        assert!(!cx.has_pending_prompt());
11208        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
11209
11210        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
11211        workspace.update_in(cx, |workspace, window, cx| {
11212            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
11213        });
11214        item.update_in(cx, |item, window, cx| {
11215            item.project_items[0].update(cx, |item, _| {
11216                item.entry_id = None;
11217            });
11218            item.is_dirty = true;
11219            window.blur();
11220        });
11221        cx.run_until_parked();
11222        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
11223
11224        // Ensure autosave is prevented for deleted files also when closing the buffer.
11225        let _close_items = pane.update_in(cx, |pane, window, cx| {
11226            pane.close_items(window, cx, SaveIntent::Close, &move |id| id == item_id)
11227        });
11228        cx.run_until_parked();
11229        assert!(cx.has_pending_prompt());
11230        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
11231    }
11232
11233    #[gpui::test]
11234    async fn test_autosave_on_focus_change_in_multibuffer(cx: &mut gpui::TestAppContext) {
11235        init_test(cx);
11236
11237        let fs = FakeFs::new(cx.executor());
11238        let project = Project::test(fs, [], cx).await;
11239        let (workspace, cx) =
11240            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11241
11242        // Create a multibuffer-like item with two child focus handles,
11243        // simulating individual buffer editors within a multibuffer.
11244        let item = cx.new(|cx| {
11245            TestItem::new(cx)
11246                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
11247                .with_child_focus_handles(2, cx)
11248        });
11249        workspace.update_in(cx, |workspace, window, cx| {
11250            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
11251        });
11252
11253        // Set autosave to OnFocusChange and focus the first child handle,
11254        // simulating the user's cursor being inside one of the multibuffer's excerpts.
11255        item.update_in(cx, |item, window, cx| {
11256            SettingsStore::update_global(cx, |settings, cx| {
11257                settings.update_user_settings(cx, |settings| {
11258                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
11259                })
11260            });
11261            item.is_dirty = true;
11262            window.focus(&item.child_focus_handles[0], cx);
11263        });
11264        cx.executor().run_until_parked();
11265        item.read_with(cx, |item, _| assert_eq!(item.save_count, 0));
11266
11267        // Moving focus from one child to another within the same item should
11268        // NOT trigger autosave — focus is still within the item's focus hierarchy.
11269        item.update_in(cx, |item, window, cx| {
11270            window.focus(&item.child_focus_handles[1], cx);
11271        });
11272        cx.executor().run_until_parked();
11273        item.read_with(cx, |item, _| {
11274            assert_eq!(
11275                item.save_count, 0,
11276                "Switching focus between children within the same item should not autosave"
11277            );
11278        });
11279
11280        // Blurring the item saves the file. This is the core regression scenario:
11281        // with `on_blur`, this would NOT trigger because `on_blur` only fires when
11282        // the item's own focus handle is the leaf that lost focus. In a multibuffer,
11283        // the leaf is always a child focus handle, so `on_blur` never detected
11284        // focus leaving the item.
11285        item.update_in(cx, |_, window, _| window.blur());
11286        cx.executor().run_until_parked();
11287        item.read_with(cx, |item, _| {
11288            assert_eq!(
11289                item.save_count, 1,
11290                "Blurring should trigger autosave when focus was on a child of the item"
11291            );
11292        });
11293
11294        // Deactivating the window should also trigger autosave when a child of
11295        // the multibuffer item currently owns focus.
11296        item.update_in(cx, |item, window, cx| {
11297            item.is_dirty = true;
11298            window.focus(&item.child_focus_handles[0], cx);
11299        });
11300        cx.executor().run_until_parked();
11301        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
11302
11303        cx.deactivate_window();
11304        item.read_with(cx, |item, _| {
11305            assert_eq!(
11306                item.save_count, 2,
11307                "Deactivating window should trigger autosave when focus was on a child"
11308            );
11309        });
11310    }
11311
11312    #[gpui::test]
11313    async fn test_pane_navigation(cx: &mut gpui::TestAppContext) {
11314        init_test(cx);
11315
11316        let fs = FakeFs::new(cx.executor());
11317
11318        let project = Project::test(fs, [], cx).await;
11319        let (workspace, cx) =
11320            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11321
11322        let item = cx.new(|cx| {
11323            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
11324        });
11325        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11326        let toolbar = pane.read_with(cx, |pane, _| pane.toolbar().clone());
11327        let toolbar_notify_count = Rc::new(RefCell::new(0));
11328
11329        workspace.update_in(cx, |workspace, window, cx| {
11330            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
11331            let toolbar_notification_count = toolbar_notify_count.clone();
11332            cx.observe_in(&toolbar, window, move |_, _, _, _| {
11333                *toolbar_notification_count.borrow_mut() += 1
11334            })
11335            .detach();
11336        });
11337
11338        pane.read_with(cx, |pane, _| {
11339            assert!(!pane.can_navigate_backward());
11340            assert!(!pane.can_navigate_forward());
11341        });
11342
11343        item.update_in(cx, |item, _, cx| {
11344            item.set_state("one".to_string(), cx);
11345        });
11346
11347        // Toolbar must be notified to re-render the navigation buttons
11348        assert_eq!(*toolbar_notify_count.borrow(), 1);
11349
11350        pane.read_with(cx, |pane, _| {
11351            assert!(pane.can_navigate_backward());
11352            assert!(!pane.can_navigate_forward());
11353        });
11354
11355        workspace
11356            .update_in(cx, |workspace, window, cx| {
11357                workspace.go_back(pane.downgrade(), window, cx)
11358            })
11359            .await
11360            .unwrap();
11361
11362        assert_eq!(*toolbar_notify_count.borrow(), 2);
11363        pane.read_with(cx, |pane, _| {
11364            assert!(!pane.can_navigate_backward());
11365            assert!(pane.can_navigate_forward());
11366        });
11367    }
11368
11369    /// Tests that the navigation history deduplicates entries for the same item.
11370    ///
11371    /// When navigating back and forth between items (e.g., A -> B -> A -> B -> A -> B -> C),
11372    /// the navigation history deduplicates by keeping only the most recent visit to each item,
11373    /// resulting in [A, B, C] instead of [A, B, A, B, A, B, C]. This ensures that Go Back (Ctrl-O)
11374    /// navigates through unique items efficiently: C -> B -> A, rather than bouncing between
11375    /// repeated entries: C -> B -> A -> B -> A -> B -> A.
11376    ///
11377    /// This behavior prevents the navigation history from growing unnecessarily large and provides
11378    /// a better user experience by eliminating redundant navigation steps when jumping between files.
11379    #[gpui::test]
11380    async fn test_navigation_history_deduplication(cx: &mut gpui::TestAppContext) {
11381        init_test(cx);
11382
11383        let fs = FakeFs::new(cx.executor());
11384        let project = Project::test(fs, [], cx).await;
11385        let (workspace, cx) =
11386            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11387
11388        let item_a = cx.new(|cx| {
11389            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "a.txt", cx)])
11390        });
11391        let item_b = cx.new(|cx| {
11392            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "b.txt", cx)])
11393        });
11394        let item_c = cx.new(|cx| {
11395            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "c.txt", cx)])
11396        });
11397
11398        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11399
11400        workspace.update_in(cx, |workspace, window, cx| {
11401            workspace.add_item_to_active_pane(Box::new(item_a.clone()), None, true, window, cx);
11402            workspace.add_item_to_active_pane(Box::new(item_b.clone()), None, true, window, cx);
11403            workspace.add_item_to_active_pane(Box::new(item_c.clone()), None, true, window, cx);
11404        });
11405
11406        workspace.update_in(cx, |workspace, window, cx| {
11407            workspace.activate_item(&item_a, false, false, window, cx);
11408        });
11409        cx.run_until_parked();
11410
11411        workspace.update_in(cx, |workspace, window, cx| {
11412            workspace.activate_item(&item_b, false, false, window, cx);
11413        });
11414        cx.run_until_parked();
11415
11416        workspace.update_in(cx, |workspace, window, cx| {
11417            workspace.activate_item(&item_a, false, false, window, cx);
11418        });
11419        cx.run_until_parked();
11420
11421        workspace.update_in(cx, |workspace, window, cx| {
11422            workspace.activate_item(&item_b, false, false, window, cx);
11423        });
11424        cx.run_until_parked();
11425
11426        workspace.update_in(cx, |workspace, window, cx| {
11427            workspace.activate_item(&item_a, false, false, window, cx);
11428        });
11429        cx.run_until_parked();
11430
11431        workspace.update_in(cx, |workspace, window, cx| {
11432            workspace.activate_item(&item_b, false, false, window, cx);
11433        });
11434        cx.run_until_parked();
11435
11436        workspace.update_in(cx, |workspace, window, cx| {
11437            workspace.activate_item(&item_c, false, false, window, cx);
11438        });
11439        cx.run_until_parked();
11440
11441        let backward_count = pane.read_with(cx, |pane, cx| {
11442            let mut count = 0;
11443            pane.nav_history().for_each_entry(cx, &mut |_, _| {
11444                count += 1;
11445            });
11446            count
11447        });
11448        assert!(
11449            backward_count <= 4,
11450            "Should have at most 4 entries, got {}",
11451            backward_count
11452        );
11453
11454        workspace
11455            .update_in(cx, |workspace, window, cx| {
11456                workspace.go_back(pane.downgrade(), window, cx)
11457            })
11458            .await
11459            .unwrap();
11460
11461        let active_item = workspace.read_with(cx, |workspace, cx| {
11462            workspace.active_item(cx).unwrap().item_id()
11463        });
11464        assert_eq!(
11465            active_item,
11466            item_b.entity_id(),
11467            "After first go_back, should be at item B"
11468        );
11469
11470        workspace
11471            .update_in(cx, |workspace, window, cx| {
11472                workspace.go_back(pane.downgrade(), window, cx)
11473            })
11474            .await
11475            .unwrap();
11476
11477        let active_item = workspace.read_with(cx, |workspace, cx| {
11478            workspace.active_item(cx).unwrap().item_id()
11479        });
11480        assert_eq!(
11481            active_item,
11482            item_a.entity_id(),
11483            "After second go_back, should be at item A"
11484        );
11485
11486        pane.read_with(cx, |pane, _| {
11487            assert!(pane.can_navigate_forward(), "Should be able to go forward");
11488        });
11489    }
11490
11491    #[gpui::test]
11492    async fn test_activate_last_pane(cx: &mut gpui::TestAppContext) {
11493        init_test(cx);
11494        let fs = FakeFs::new(cx.executor());
11495        let project = Project::test(fs, [], cx).await;
11496        let (multi_workspace, cx) =
11497            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
11498        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
11499
11500        workspace.update_in(cx, |workspace, window, cx| {
11501            let first_item = cx.new(|cx| {
11502                TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
11503            });
11504            workspace.add_item_to_active_pane(Box::new(first_item), None, true, window, cx);
11505            workspace.split_pane(
11506                workspace.active_pane().clone(),
11507                SplitDirection::Right,
11508                window,
11509                cx,
11510            );
11511            workspace.split_pane(
11512                workspace.active_pane().clone(),
11513                SplitDirection::Right,
11514                window,
11515                cx,
11516            );
11517        });
11518
11519        let (first_pane_id, target_last_pane_id) = workspace.update(cx, |workspace, _cx| {
11520            let panes = workspace.center.panes();
11521            assert!(panes.len() >= 2);
11522            (
11523                panes.first().expect("at least one pane").entity_id(),
11524                panes.last().expect("at least one pane").entity_id(),
11525            )
11526        });
11527
11528        workspace.update_in(cx, |workspace, window, cx| {
11529            workspace.activate_pane_at_index(&ActivatePane(0), window, cx);
11530        });
11531        workspace.update(cx, |workspace, _| {
11532            assert_eq!(workspace.active_pane().entity_id(), first_pane_id);
11533            assert_ne!(workspace.active_pane().entity_id(), target_last_pane_id);
11534        });
11535
11536        cx.dispatch_action(ActivateLastPane);
11537
11538        workspace.update(cx, |workspace, _| {
11539            assert_eq!(workspace.active_pane().entity_id(), target_last_pane_id);
11540        });
11541    }
11542
11543    #[gpui::test]
11544    async fn test_toggle_docks_and_panels(cx: &mut gpui::TestAppContext) {
11545        init_test(cx);
11546        let fs = FakeFs::new(cx.executor());
11547
11548        let project = Project::test(fs, [], cx).await;
11549        let (workspace, cx) =
11550            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11551
11552        let panel = workspace.update_in(cx, |workspace, window, cx| {
11553            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
11554            workspace.add_panel(panel.clone(), window, cx);
11555
11556            workspace
11557                .right_dock()
11558                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
11559
11560            panel
11561        });
11562
11563        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11564        pane.update_in(cx, |pane, window, cx| {
11565            let item = cx.new(TestItem::new);
11566            pane.add_item(Box::new(item), true, true, None, window, cx);
11567        });
11568
11569        // Transfer focus from center to panel
11570        workspace.update_in(cx, |workspace, window, cx| {
11571            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11572        });
11573
11574        workspace.update_in(cx, |workspace, window, cx| {
11575            assert!(workspace.right_dock().read(cx).is_open());
11576            assert!(!panel.is_zoomed(window, cx));
11577            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11578        });
11579
11580        // Transfer focus from panel to center
11581        workspace.update_in(cx, |workspace, window, cx| {
11582            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11583        });
11584
11585        workspace.update_in(cx, |workspace, window, cx| {
11586            assert!(workspace.right_dock().read(cx).is_open());
11587            assert!(!panel.is_zoomed(window, cx));
11588            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11589            assert!(pane.read(cx).focus_handle(cx).contains_focused(window, cx));
11590        });
11591
11592        // Close the dock
11593        workspace.update_in(cx, |workspace, window, cx| {
11594            workspace.toggle_dock(DockPosition::Right, window, cx);
11595        });
11596
11597        workspace.update_in(cx, |workspace, window, cx| {
11598            assert!(!workspace.right_dock().read(cx).is_open());
11599            assert!(!panel.is_zoomed(window, cx));
11600            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11601            assert!(pane.read(cx).focus_handle(cx).contains_focused(window, cx));
11602        });
11603
11604        // Open the dock
11605        workspace.update_in(cx, |workspace, window, cx| {
11606            workspace.toggle_dock(DockPosition::Right, window, cx);
11607        });
11608
11609        workspace.update_in(cx, |workspace, window, cx| {
11610            assert!(workspace.right_dock().read(cx).is_open());
11611            assert!(!panel.is_zoomed(window, cx));
11612            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11613        });
11614
11615        // Focus and zoom panel
11616        panel.update_in(cx, |panel, window, cx| {
11617            cx.focus_self(window);
11618            panel.set_zoomed(true, window, cx)
11619        });
11620
11621        workspace.update_in(cx, |workspace, window, cx| {
11622            assert!(workspace.right_dock().read(cx).is_open());
11623            assert!(panel.is_zoomed(window, cx));
11624            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11625        });
11626
11627        // Transfer focus to the center closes the dock
11628        workspace.update_in(cx, |workspace, window, cx| {
11629            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11630        });
11631
11632        workspace.update_in(cx, |workspace, window, cx| {
11633            assert!(!workspace.right_dock().read(cx).is_open());
11634            assert!(panel.is_zoomed(window, cx));
11635            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11636        });
11637
11638        // Transferring focus back to the panel keeps it zoomed
11639        workspace.update_in(cx, |workspace, window, cx| {
11640            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11641        });
11642
11643        workspace.update_in(cx, |workspace, window, cx| {
11644            assert!(workspace.right_dock().read(cx).is_open());
11645            assert!(panel.is_zoomed(window, cx));
11646            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11647        });
11648
11649        // Close the dock while it is zoomed
11650        workspace.update_in(cx, |workspace, window, cx| {
11651            workspace.toggle_dock(DockPosition::Right, window, cx)
11652        });
11653
11654        workspace.update_in(cx, |workspace, window, cx| {
11655            assert!(!workspace.right_dock().read(cx).is_open());
11656            assert!(panel.is_zoomed(window, cx));
11657            assert!(workspace.zoomed.is_none());
11658            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11659        });
11660
11661        // Opening the dock, when it's zoomed, retains focus
11662        workspace.update_in(cx, |workspace, window, cx| {
11663            workspace.toggle_dock(DockPosition::Right, window, cx)
11664        });
11665
11666        workspace.update_in(cx, |workspace, window, cx| {
11667            assert!(workspace.right_dock().read(cx).is_open());
11668            assert!(panel.is_zoomed(window, cx));
11669            assert!(workspace.zoomed.is_some());
11670            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11671        });
11672
11673        // Unzoom and close the panel, zoom the active pane.
11674        panel.update_in(cx, |panel, window, cx| panel.set_zoomed(false, window, cx));
11675        workspace.update_in(cx, |workspace, window, cx| {
11676            workspace.toggle_dock(DockPosition::Right, window, cx)
11677        });
11678        pane.update_in(cx, |pane, window, cx| {
11679            pane.toggle_zoom(&Default::default(), window, cx)
11680        });
11681
11682        // Opening a dock unzooms the pane.
11683        workspace.update_in(cx, |workspace, window, cx| {
11684            workspace.toggle_dock(DockPosition::Right, window, cx)
11685        });
11686        workspace.update_in(cx, |workspace, window, cx| {
11687            let pane = pane.read(cx);
11688            assert!(!pane.is_zoomed());
11689            assert!(!pane.focus_handle(cx).is_focused(window));
11690            assert!(workspace.right_dock().read(cx).is_open());
11691            assert!(workspace.zoomed.is_none());
11692        });
11693    }
11694
11695    #[gpui::test]
11696    async fn test_close_panel_on_toggle(cx: &mut gpui::TestAppContext) {
11697        init_test(cx);
11698        let fs = FakeFs::new(cx.executor());
11699
11700        let project = Project::test(fs, [], cx).await;
11701        let (workspace, cx) =
11702            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11703
11704        let panel = workspace.update_in(cx, |workspace, window, cx| {
11705            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
11706            workspace.add_panel(panel.clone(), window, cx);
11707            panel
11708        });
11709
11710        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11711        pane.update_in(cx, |pane, window, cx| {
11712            let item = cx.new(TestItem::new);
11713            pane.add_item(Box::new(item), true, true, None, window, cx);
11714        });
11715
11716        // Enable close_panel_on_toggle
11717        cx.update_global(|store: &mut SettingsStore, cx| {
11718            store.update_user_settings(cx, |settings| {
11719                settings.workspace.close_panel_on_toggle = Some(true);
11720            });
11721        });
11722
11723        // Panel starts closed. Toggling should open and focus it.
11724        workspace.update_in(cx, |workspace, window, cx| {
11725            assert!(!workspace.right_dock().read(cx).is_open());
11726            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11727        });
11728
11729        workspace.update_in(cx, |workspace, window, cx| {
11730            assert!(
11731                workspace.right_dock().read(cx).is_open(),
11732                "Dock should be open after toggling from center"
11733            );
11734            assert!(
11735                panel.read(cx).focus_handle(cx).contains_focused(window, cx),
11736                "Panel should be focused after toggling from center"
11737            );
11738        });
11739
11740        // Panel is open and focused. Toggling should close the panel and
11741        // return focus to the center.
11742        workspace.update_in(cx, |workspace, window, cx| {
11743            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11744        });
11745
11746        workspace.update_in(cx, |workspace, window, cx| {
11747            assert!(
11748                !workspace.right_dock().read(cx).is_open(),
11749                "Dock should be closed after toggling from focused panel"
11750            );
11751            assert!(
11752                !panel.read(cx).focus_handle(cx).contains_focused(window, cx),
11753                "Panel should not be focused after toggling from focused panel"
11754            );
11755        });
11756
11757        // Open the dock and focus something else so the panel is open but not
11758        // focused. Toggling should focus the panel (not close it).
11759        workspace.update_in(cx, |workspace, window, cx| {
11760            workspace
11761                .right_dock()
11762                .update(cx, |dock, cx| dock.set_open(true, window, cx));
11763            window.focus(&pane.read(cx).focus_handle(cx), cx);
11764        });
11765
11766        workspace.update_in(cx, |workspace, window, cx| {
11767            assert!(workspace.right_dock().read(cx).is_open());
11768            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11769            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11770        });
11771
11772        workspace.update_in(cx, |workspace, window, cx| {
11773            assert!(
11774                workspace.right_dock().read(cx).is_open(),
11775                "Dock should remain open when toggling focuses an open-but-unfocused panel"
11776            );
11777            assert!(
11778                panel.read(cx).focus_handle(cx).contains_focused(window, cx),
11779                "Panel should be focused after toggling an open-but-unfocused panel"
11780            );
11781        });
11782
11783        // Now disable the setting and verify the original behavior: toggling
11784        // from a focused panel moves focus to center but leaves the dock open.
11785        cx.update_global(|store: &mut SettingsStore, cx| {
11786            store.update_user_settings(cx, |settings| {
11787                settings.workspace.close_panel_on_toggle = Some(false);
11788            });
11789        });
11790
11791        workspace.update_in(cx, |workspace, window, cx| {
11792            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11793        });
11794
11795        workspace.update_in(cx, |workspace, window, cx| {
11796            assert!(
11797                workspace.right_dock().read(cx).is_open(),
11798                "Dock should remain open when setting is disabled"
11799            );
11800            assert!(
11801                !panel.read(cx).focus_handle(cx).contains_focused(window, cx),
11802                "Panel should not be focused after toggling with setting disabled"
11803            );
11804        });
11805    }
11806
11807    #[gpui::test]
11808    async fn test_pane_zoom_in_out(cx: &mut TestAppContext) {
11809        init_test(cx);
11810        let fs = FakeFs::new(cx.executor());
11811
11812        let project = Project::test(fs, [], cx).await;
11813        let (workspace, cx) =
11814            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11815
11816        let pane = workspace.update_in(cx, |workspace, _window, _cx| {
11817            workspace.active_pane().clone()
11818        });
11819
11820        // Add an item to the pane so it can be zoomed
11821        workspace.update_in(cx, |workspace, window, cx| {
11822            let item = cx.new(TestItem::new);
11823            workspace.add_item(pane.clone(), Box::new(item), None, true, true, window, cx);
11824        });
11825
11826        // Initially not zoomed
11827        workspace.update_in(cx, |workspace, _window, cx| {
11828            assert!(!pane.read(cx).is_zoomed(), "Pane starts unzoomed");
11829            assert!(
11830                workspace.zoomed.is_none(),
11831                "Workspace should track no zoomed pane"
11832            );
11833            assert!(pane.read(cx).items_len() > 0, "Pane should have items");
11834        });
11835
11836        // Zoom In
11837        pane.update_in(cx, |pane, window, cx| {
11838            pane.zoom_in(&crate::ZoomIn, window, cx);
11839        });
11840
11841        workspace.update_in(cx, |workspace, window, cx| {
11842            assert!(
11843                pane.read(cx).is_zoomed(),
11844                "Pane should be zoomed after ZoomIn"
11845            );
11846            assert!(
11847                workspace.zoomed.is_some(),
11848                "Workspace should track the zoomed pane"
11849            );
11850            assert!(
11851                pane.read(cx).focus_handle(cx).contains_focused(window, cx),
11852                "ZoomIn should focus the pane"
11853            );
11854        });
11855
11856        // Zoom In again is a no-op
11857        pane.update_in(cx, |pane, window, cx| {
11858            pane.zoom_in(&crate::ZoomIn, window, cx);
11859        });
11860
11861        workspace.update_in(cx, |workspace, window, cx| {
11862            assert!(pane.read(cx).is_zoomed(), "Second ZoomIn keeps pane zoomed");
11863            assert!(
11864                workspace.zoomed.is_some(),
11865                "Workspace still tracks zoomed pane"
11866            );
11867            assert!(
11868                pane.read(cx).focus_handle(cx).contains_focused(window, cx),
11869                "Pane remains focused after repeated ZoomIn"
11870            );
11871        });
11872
11873        // Zoom Out
11874        pane.update_in(cx, |pane, window, cx| {
11875            pane.zoom_out(&crate::ZoomOut, window, cx);
11876        });
11877
11878        workspace.update_in(cx, |workspace, _window, cx| {
11879            assert!(
11880                !pane.read(cx).is_zoomed(),
11881                "Pane should unzoom after ZoomOut"
11882            );
11883            assert!(
11884                workspace.zoomed.is_none(),
11885                "Workspace clears zoom tracking after ZoomOut"
11886            );
11887        });
11888
11889        // Zoom Out again is a no-op
11890        pane.update_in(cx, |pane, window, cx| {
11891            pane.zoom_out(&crate::ZoomOut, window, cx);
11892        });
11893
11894        workspace.update_in(cx, |workspace, _window, cx| {
11895            assert!(
11896                !pane.read(cx).is_zoomed(),
11897                "Second ZoomOut keeps pane unzoomed"
11898            );
11899            assert!(
11900                workspace.zoomed.is_none(),
11901                "Workspace remains without zoomed pane"
11902            );
11903        });
11904    }
11905
11906    #[gpui::test]
11907    async fn test_toggle_all_docks(cx: &mut gpui::TestAppContext) {
11908        init_test(cx);
11909        let fs = FakeFs::new(cx.executor());
11910
11911        let project = Project::test(fs, [], cx).await;
11912        let (workspace, cx) =
11913            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11914        workspace.update_in(cx, |workspace, window, cx| {
11915            // Open two docks
11916            let left_dock = workspace.dock_at_position(DockPosition::Left);
11917            let right_dock = workspace.dock_at_position(DockPosition::Right);
11918
11919            left_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
11920            right_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
11921
11922            assert!(left_dock.read(cx).is_open());
11923            assert!(right_dock.read(cx).is_open());
11924        });
11925
11926        workspace.update_in(cx, |workspace, window, cx| {
11927            // Toggle all docks - should close both
11928            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
11929
11930            let left_dock = workspace.dock_at_position(DockPosition::Left);
11931            let right_dock = workspace.dock_at_position(DockPosition::Right);
11932            assert!(!left_dock.read(cx).is_open());
11933            assert!(!right_dock.read(cx).is_open());
11934        });
11935
11936        workspace.update_in(cx, |workspace, window, cx| {
11937            // Toggle again - should reopen both
11938            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
11939
11940            let left_dock = workspace.dock_at_position(DockPosition::Left);
11941            let right_dock = workspace.dock_at_position(DockPosition::Right);
11942            assert!(left_dock.read(cx).is_open());
11943            assert!(right_dock.read(cx).is_open());
11944        });
11945    }
11946
11947    #[gpui::test]
11948    async fn test_toggle_all_with_manual_close(cx: &mut gpui::TestAppContext) {
11949        init_test(cx);
11950        let fs = FakeFs::new(cx.executor());
11951
11952        let project = Project::test(fs, [], cx).await;
11953        let (workspace, cx) =
11954            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11955        workspace.update_in(cx, |workspace, window, cx| {
11956            // Open two docks
11957            let left_dock = workspace.dock_at_position(DockPosition::Left);
11958            let right_dock = workspace.dock_at_position(DockPosition::Right);
11959
11960            left_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
11961            right_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
11962
11963            assert!(left_dock.read(cx).is_open());
11964            assert!(right_dock.read(cx).is_open());
11965        });
11966
11967        workspace.update_in(cx, |workspace, window, cx| {
11968            // Close them manually
11969            workspace.toggle_dock(DockPosition::Left, window, cx);
11970            workspace.toggle_dock(DockPosition::Right, window, cx);
11971
11972            let left_dock = workspace.dock_at_position(DockPosition::Left);
11973            let right_dock = workspace.dock_at_position(DockPosition::Right);
11974            assert!(!left_dock.read(cx).is_open());
11975            assert!(!right_dock.read(cx).is_open());
11976        });
11977
11978        workspace.update_in(cx, |workspace, window, cx| {
11979            // Toggle all docks - only last closed (right dock) should reopen
11980            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
11981
11982            let left_dock = workspace.dock_at_position(DockPosition::Left);
11983            let right_dock = workspace.dock_at_position(DockPosition::Right);
11984            assert!(!left_dock.read(cx).is_open());
11985            assert!(right_dock.read(cx).is_open());
11986        });
11987    }
11988
11989    #[gpui::test]
11990    async fn test_toggle_all_docks_after_dock_move(cx: &mut gpui::TestAppContext) {
11991        init_test(cx);
11992        let fs = FakeFs::new(cx.executor());
11993        let project = Project::test(fs, [], cx).await;
11994        let (multi_workspace, cx) =
11995            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
11996        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
11997
11998        // Open two docks (left and right) with one panel each
11999        let (left_panel, right_panel) = workspace.update_in(cx, |workspace, window, cx| {
12000            let left_panel = cx.new(|cx| TestPanel::new(DockPosition::Left, 100, cx));
12001            workspace.add_panel(left_panel.clone(), window, cx);
12002
12003            let right_panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 101, cx));
12004            workspace.add_panel(right_panel.clone(), window, cx);
12005
12006            workspace.toggle_dock(DockPosition::Left, window, cx);
12007            workspace.toggle_dock(DockPosition::Right, window, cx);
12008
12009            // Verify initial state
12010            assert!(
12011                workspace.left_dock().read(cx).is_open(),
12012                "Left dock should be open"
12013            );
12014            assert_eq!(
12015                workspace
12016                    .left_dock()
12017                    .read(cx)
12018                    .visible_panel()
12019                    .unwrap()
12020                    .panel_id(),
12021                left_panel.panel_id(),
12022                "Left panel should be visible in left dock"
12023            );
12024            assert!(
12025                workspace.right_dock().read(cx).is_open(),
12026                "Right dock should be open"
12027            );
12028            assert_eq!(
12029                workspace
12030                    .right_dock()
12031                    .read(cx)
12032                    .visible_panel()
12033                    .unwrap()
12034                    .panel_id(),
12035                right_panel.panel_id(),
12036                "Right panel should be visible in right dock"
12037            );
12038            assert!(
12039                !workspace.bottom_dock().read(cx).is_open(),
12040                "Bottom dock should be closed"
12041            );
12042
12043            (left_panel, right_panel)
12044        });
12045
12046        // Focus the left panel and move it to the next position (bottom dock)
12047        workspace.update_in(cx, |workspace, window, cx| {
12048            workspace.toggle_panel_focus::<TestPanel>(window, cx); // Focus left panel
12049            assert!(
12050                left_panel.read(cx).focus_handle(cx).is_focused(window),
12051                "Left panel should be focused"
12052            );
12053        });
12054
12055        cx.dispatch_action(MoveFocusedPanelToNextPosition);
12056
12057        // Verify the left panel has moved to the bottom dock, and the bottom dock is now open
12058        workspace.update(cx, |workspace, cx| {
12059            assert!(
12060                !workspace.left_dock().read(cx).is_open(),
12061                "Left dock should be closed"
12062            );
12063            assert!(
12064                workspace.bottom_dock().read(cx).is_open(),
12065                "Bottom dock should now be open"
12066            );
12067            assert_eq!(
12068                left_panel.read(cx).position,
12069                DockPosition::Bottom,
12070                "Left panel should now be in the bottom dock"
12071            );
12072            assert_eq!(
12073                workspace
12074                    .bottom_dock()
12075                    .read(cx)
12076                    .visible_panel()
12077                    .unwrap()
12078                    .panel_id(),
12079                left_panel.panel_id(),
12080                "Left panel should be the visible panel in the bottom dock"
12081            );
12082        });
12083
12084        // Toggle all docks off
12085        workspace.update_in(cx, |workspace, window, cx| {
12086            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
12087            assert!(
12088                !workspace.left_dock().read(cx).is_open(),
12089                "Left dock should be closed"
12090            );
12091            assert!(
12092                !workspace.right_dock().read(cx).is_open(),
12093                "Right dock should be closed"
12094            );
12095            assert!(
12096                !workspace.bottom_dock().read(cx).is_open(),
12097                "Bottom dock should be closed"
12098            );
12099        });
12100
12101        // Toggle all docks back on and verify positions are restored
12102        workspace.update_in(cx, |workspace, window, cx| {
12103            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
12104            assert!(
12105                !workspace.left_dock().read(cx).is_open(),
12106                "Left dock should remain closed"
12107            );
12108            assert!(
12109                workspace.right_dock().read(cx).is_open(),
12110                "Right dock should remain open"
12111            );
12112            assert!(
12113                workspace.bottom_dock().read(cx).is_open(),
12114                "Bottom dock should remain open"
12115            );
12116            assert_eq!(
12117                left_panel.read(cx).position,
12118                DockPosition::Bottom,
12119                "Left panel should remain in the bottom dock"
12120            );
12121            assert_eq!(
12122                right_panel.read(cx).position,
12123                DockPosition::Right,
12124                "Right panel should remain in the right dock"
12125            );
12126            assert_eq!(
12127                workspace
12128                    .bottom_dock()
12129                    .read(cx)
12130                    .visible_panel()
12131                    .unwrap()
12132                    .panel_id(),
12133                left_panel.panel_id(),
12134                "Left panel should be the visible panel in the right dock"
12135            );
12136        });
12137    }
12138
12139    #[gpui::test]
12140    async fn test_join_pane_into_next(cx: &mut gpui::TestAppContext) {
12141        init_test(cx);
12142
12143        let fs = FakeFs::new(cx.executor());
12144
12145        let project = Project::test(fs, None, cx).await;
12146        let (workspace, cx) =
12147            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
12148
12149        // Let's arrange the panes like this:
12150        //
12151        // +-----------------------+
12152        // |         top           |
12153        // +------+--------+-------+
12154        // | left | center | right |
12155        // +------+--------+-------+
12156        // |        bottom         |
12157        // +-----------------------+
12158
12159        let top_item = cx.new(|cx| {
12160            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "top.txt", cx)])
12161        });
12162        let bottom_item = cx.new(|cx| {
12163            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "bottom.txt", cx)])
12164        });
12165        let left_item = cx.new(|cx| {
12166            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "left.txt", cx)])
12167        });
12168        let right_item = cx.new(|cx| {
12169            TestItem::new(cx).with_project_items(&[TestProjectItem::new(4, "right.txt", cx)])
12170        });
12171        let center_item = cx.new(|cx| {
12172            TestItem::new(cx).with_project_items(&[TestProjectItem::new(5, "center.txt", cx)])
12173        });
12174
12175        let top_pane_id = workspace.update_in(cx, |workspace, window, cx| {
12176            let top_pane_id = workspace.active_pane().entity_id();
12177            workspace.add_item_to_active_pane(Box::new(top_item.clone()), None, false, window, cx);
12178            workspace.split_pane(
12179                workspace.active_pane().clone(),
12180                SplitDirection::Down,
12181                window,
12182                cx,
12183            );
12184            top_pane_id
12185        });
12186        let bottom_pane_id = workspace.update_in(cx, |workspace, window, cx| {
12187            let bottom_pane_id = workspace.active_pane().entity_id();
12188            workspace.add_item_to_active_pane(
12189                Box::new(bottom_item.clone()),
12190                None,
12191                false,
12192                window,
12193                cx,
12194            );
12195            workspace.split_pane(
12196                workspace.active_pane().clone(),
12197                SplitDirection::Up,
12198                window,
12199                cx,
12200            );
12201            bottom_pane_id
12202        });
12203        let left_pane_id = workspace.update_in(cx, |workspace, window, cx| {
12204            let left_pane_id = workspace.active_pane().entity_id();
12205            workspace.add_item_to_active_pane(Box::new(left_item.clone()), None, false, window, cx);
12206            workspace.split_pane(
12207                workspace.active_pane().clone(),
12208                SplitDirection::Right,
12209                window,
12210                cx,
12211            );
12212            left_pane_id
12213        });
12214        let right_pane_id = workspace.update_in(cx, |workspace, window, cx| {
12215            let right_pane_id = workspace.active_pane().entity_id();
12216            workspace.add_item_to_active_pane(
12217                Box::new(right_item.clone()),
12218                None,
12219                false,
12220                window,
12221                cx,
12222            );
12223            workspace.split_pane(
12224                workspace.active_pane().clone(),
12225                SplitDirection::Left,
12226                window,
12227                cx,
12228            );
12229            right_pane_id
12230        });
12231        let center_pane_id = workspace.update_in(cx, |workspace, window, cx| {
12232            let center_pane_id = workspace.active_pane().entity_id();
12233            workspace.add_item_to_active_pane(
12234                Box::new(center_item.clone()),
12235                None,
12236                false,
12237                window,
12238                cx,
12239            );
12240            center_pane_id
12241        });
12242        cx.executor().run_until_parked();
12243
12244        workspace.update_in(cx, |workspace, window, cx| {
12245            assert_eq!(center_pane_id, workspace.active_pane().entity_id());
12246
12247            // Join into next from center pane into right
12248            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
12249        });
12250
12251        workspace.update_in(cx, |workspace, window, cx| {
12252            let active_pane = workspace.active_pane();
12253            assert_eq!(right_pane_id, active_pane.entity_id());
12254            assert_eq!(2, active_pane.read(cx).items_len());
12255            let item_ids_in_pane =
12256                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
12257            assert!(item_ids_in_pane.contains(&center_item.item_id()));
12258            assert!(item_ids_in_pane.contains(&right_item.item_id()));
12259
12260            // Join into next from right pane into bottom
12261            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
12262        });
12263
12264        workspace.update_in(cx, |workspace, window, cx| {
12265            let active_pane = workspace.active_pane();
12266            assert_eq!(bottom_pane_id, active_pane.entity_id());
12267            assert_eq!(3, active_pane.read(cx).items_len());
12268            let item_ids_in_pane =
12269                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
12270            assert!(item_ids_in_pane.contains(&center_item.item_id()));
12271            assert!(item_ids_in_pane.contains(&right_item.item_id()));
12272            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
12273
12274            // Join into next from bottom pane into left
12275            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
12276        });
12277
12278        workspace.update_in(cx, |workspace, window, cx| {
12279            let active_pane = workspace.active_pane();
12280            assert_eq!(left_pane_id, active_pane.entity_id());
12281            assert_eq!(4, active_pane.read(cx).items_len());
12282            let item_ids_in_pane =
12283                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
12284            assert!(item_ids_in_pane.contains(&center_item.item_id()));
12285            assert!(item_ids_in_pane.contains(&right_item.item_id()));
12286            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
12287            assert!(item_ids_in_pane.contains(&left_item.item_id()));
12288
12289            // Join into next from left pane into top
12290            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
12291        });
12292
12293        workspace.update_in(cx, |workspace, window, cx| {
12294            let active_pane = workspace.active_pane();
12295            assert_eq!(top_pane_id, active_pane.entity_id());
12296            assert_eq!(5, active_pane.read(cx).items_len());
12297            let item_ids_in_pane =
12298                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
12299            assert!(item_ids_in_pane.contains(&center_item.item_id()));
12300            assert!(item_ids_in_pane.contains(&right_item.item_id()));
12301            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
12302            assert!(item_ids_in_pane.contains(&left_item.item_id()));
12303            assert!(item_ids_in_pane.contains(&top_item.item_id()));
12304
12305            // Single pane left: no-op
12306            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx)
12307        });
12308
12309        workspace.update(cx, |workspace, _cx| {
12310            let active_pane = workspace.active_pane();
12311            assert_eq!(top_pane_id, active_pane.entity_id());
12312        });
12313    }
12314
12315    fn add_an_item_to_active_pane(
12316        cx: &mut VisualTestContext,
12317        workspace: &Entity<Workspace>,
12318        item_id: u64,
12319    ) -> Entity<TestItem> {
12320        let item = cx.new(|cx| {
12321            TestItem::new(cx).with_project_items(&[TestProjectItem::new(
12322                item_id,
12323                "item{item_id}.txt",
12324                cx,
12325            )])
12326        });
12327        workspace.update_in(cx, |workspace, window, cx| {
12328            workspace.add_item_to_active_pane(Box::new(item.clone()), None, false, window, cx);
12329        });
12330        item
12331    }
12332
12333    fn split_pane(cx: &mut VisualTestContext, workspace: &Entity<Workspace>) -> Entity<Pane> {
12334        workspace.update_in(cx, |workspace, window, cx| {
12335            workspace.split_pane(
12336                workspace.active_pane().clone(),
12337                SplitDirection::Right,
12338                window,
12339                cx,
12340            )
12341        })
12342    }
12343
12344    #[gpui::test]
12345    async fn test_join_all_panes(cx: &mut gpui::TestAppContext) {
12346        init_test(cx);
12347        let fs = FakeFs::new(cx.executor());
12348        let project = Project::test(fs, None, cx).await;
12349        let (workspace, cx) =
12350            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
12351
12352        add_an_item_to_active_pane(cx, &workspace, 1);
12353        split_pane(cx, &workspace);
12354        add_an_item_to_active_pane(cx, &workspace, 2);
12355        split_pane(cx, &workspace); // empty pane
12356        split_pane(cx, &workspace);
12357        let last_item = add_an_item_to_active_pane(cx, &workspace, 3);
12358
12359        cx.executor().run_until_parked();
12360
12361        workspace.update(cx, |workspace, cx| {
12362            let num_panes = workspace.panes().len();
12363            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
12364            let active_item = workspace
12365                .active_pane()
12366                .read(cx)
12367                .active_item()
12368                .expect("item is in focus");
12369
12370            assert_eq!(num_panes, 4);
12371            assert_eq!(num_items_in_current_pane, 1);
12372            assert_eq!(active_item.item_id(), last_item.item_id());
12373        });
12374
12375        workspace.update_in(cx, |workspace, window, cx| {
12376            workspace.join_all_panes(window, cx);
12377        });
12378
12379        workspace.update(cx, |workspace, cx| {
12380            let num_panes = workspace.panes().len();
12381            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
12382            let active_item = workspace
12383                .active_pane()
12384                .read(cx)
12385                .active_item()
12386                .expect("item is in focus");
12387
12388            assert_eq!(num_panes, 1);
12389            assert_eq!(num_items_in_current_pane, 3);
12390            assert_eq!(active_item.item_id(), last_item.item_id());
12391        });
12392    }
12393
12394    #[gpui::test]
12395    async fn test_flexible_dock_sizing(cx: &mut gpui::TestAppContext) {
12396        init_test(cx);
12397        let fs = FakeFs::new(cx.executor());
12398
12399        let project = Project::test(fs, [], cx).await;
12400        let (multi_workspace, cx) =
12401            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
12402        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
12403
12404        workspace.update(cx, |workspace, _cx| {
12405            workspace.bounds.size.width = px(800.);
12406        });
12407
12408        workspace.update_in(cx, |workspace, window, cx| {
12409            let panel = cx.new(|cx| TestPanel::new_flexible(DockPosition::Right, 100, cx));
12410            workspace.add_panel(panel, window, cx);
12411            workspace.toggle_dock(DockPosition::Right, window, cx);
12412        });
12413
12414        let (panel, resized_width, ratio_basis_width) =
12415            workspace.update_in(cx, |workspace, window, cx| {
12416                let item = cx.new(|cx| {
12417                    TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
12418                });
12419                workspace.add_item_to_active_pane(Box::new(item), None, true, window, cx);
12420
12421                let dock = workspace.right_dock().read(cx);
12422                let workspace_width = workspace.bounds.size.width;
12423                let initial_width = workspace
12424                    .dock_size(&dock, window, cx)
12425                    .expect("flexible dock should have an initial width");
12426
12427                assert_eq!(initial_width, workspace_width / 2.);
12428
12429                workspace.resize_right_dock(px(300.), window, cx);
12430
12431                let dock = workspace.right_dock().read(cx);
12432                let resized_width = workspace
12433                    .dock_size(&dock, window, cx)
12434                    .expect("flexible dock should keep its resized width");
12435
12436                assert_eq!(resized_width, px(300.));
12437
12438                let panel = workspace
12439                    .right_dock()
12440                    .read(cx)
12441                    .visible_panel()
12442                    .expect("flexible dock should have a visible panel")
12443                    .panel_id();
12444
12445                (panel, resized_width, workspace_width)
12446            });
12447
12448        workspace.update_in(cx, |workspace, window, cx| {
12449            workspace.toggle_dock(DockPosition::Right, window, cx);
12450            workspace.toggle_dock(DockPosition::Right, window, cx);
12451
12452            let dock = workspace.right_dock().read(cx);
12453            let reopened_width = workspace
12454                .dock_size(&dock, window, cx)
12455                .expect("flexible dock should restore when reopened");
12456
12457            assert_eq!(reopened_width, resized_width);
12458
12459            let right_dock = workspace.right_dock().read(cx);
12460            let flexible_panel = right_dock
12461                .visible_panel()
12462                .expect("flexible dock should still have a visible panel");
12463            assert_eq!(flexible_panel.panel_id(), panel);
12464            assert_eq!(
12465                right_dock
12466                    .stored_panel_size_state(flexible_panel.as_ref())
12467                    .and_then(|size_state| size_state.flex),
12468                Some(
12469                    resized_width.to_f64() as f32
12470                        / (workspace.bounds.size.width - resized_width).to_f64() as f32
12471                )
12472            );
12473        });
12474
12475        workspace.update_in(cx, |workspace, window, cx| {
12476            workspace.split_pane(
12477                workspace.active_pane().clone(),
12478                SplitDirection::Right,
12479                window,
12480                cx,
12481            );
12482
12483            let dock = workspace.right_dock().read(cx);
12484            let split_width = workspace
12485                .dock_size(&dock, window, cx)
12486                .expect("flexible dock should keep its user-resized proportion");
12487
12488            assert_eq!(split_width, px(300.));
12489
12490            workspace.bounds.size.width = px(1600.);
12491
12492            let dock = workspace.right_dock().read(cx);
12493            let resized_window_width = workspace
12494                .dock_size(&dock, window, cx)
12495                .expect("flexible dock should preserve proportional size on window resize");
12496
12497            assert_eq!(
12498                resized_window_width,
12499                workspace.bounds.size.width
12500                    * (resized_width.to_f64() as f32 / ratio_basis_width.to_f64() as f32)
12501            );
12502        });
12503    }
12504
12505    #[gpui::test]
12506    async fn test_panel_size_state_persistence(cx: &mut gpui::TestAppContext) {
12507        init_test(cx);
12508        let fs = FakeFs::new(cx.executor());
12509
12510        // Fixed-width panel: pixel size is persisted to KVP and restored on re-add.
12511        {
12512            let project = Project::test(fs.clone(), [], cx).await;
12513            let (multi_workspace, cx) =
12514                cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
12515            let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
12516
12517            workspace.update(cx, |workspace, _cx| {
12518                workspace.set_random_database_id();
12519                workspace.bounds.size.width = px(800.);
12520            });
12521
12522            let panel = workspace.update_in(cx, |workspace, window, cx| {
12523                let panel = cx.new(|cx| TestPanel::new(DockPosition::Left, 100, cx));
12524                workspace.add_panel(panel.clone(), window, cx);
12525                workspace.toggle_dock(DockPosition::Left, window, cx);
12526                panel
12527            });
12528
12529            workspace.update_in(cx, |workspace, window, cx| {
12530                workspace.resize_left_dock(px(350.), window, cx);
12531            });
12532
12533            cx.run_until_parked();
12534
12535            let persisted = workspace.read_with(cx, |workspace, cx| {
12536                workspace.persisted_panel_size_state(TestPanel::panel_key(), cx)
12537            });
12538            assert_eq!(
12539                persisted.and_then(|s| s.size),
12540                Some(px(350.)),
12541                "fixed-width panel size should be persisted to KVP"
12542            );
12543
12544            // Remove the panel and re-add a fresh instance with the same key.
12545            // The new instance should have its size state restored from KVP.
12546            workspace.update_in(cx, |workspace, window, cx| {
12547                workspace.remove_panel(&panel, window, cx);
12548            });
12549
12550            workspace.update_in(cx, |workspace, window, cx| {
12551                let new_panel = cx.new(|cx| TestPanel::new(DockPosition::Left, 100, cx));
12552                workspace.add_panel(new_panel, window, cx);
12553
12554                let left_dock = workspace.left_dock().read(cx);
12555                let size_state = left_dock
12556                    .panel::<TestPanel>()
12557                    .and_then(|p| left_dock.stored_panel_size_state(&p));
12558                assert_eq!(
12559                    size_state.and_then(|s| s.size),
12560                    Some(px(350.)),
12561                    "re-added fixed-width panel should restore persisted size from KVP"
12562                );
12563            });
12564        }
12565
12566        // Flexible panel: both pixel size and ratio are persisted and restored.
12567        {
12568            let project = Project::test(fs.clone(), [], cx).await;
12569            let (multi_workspace, cx) =
12570                cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
12571            let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
12572
12573            workspace.update(cx, |workspace, _cx| {
12574                workspace.set_random_database_id();
12575                workspace.bounds.size.width = px(800.);
12576            });
12577
12578            let panel = workspace.update_in(cx, |workspace, window, cx| {
12579                let item = cx.new(|cx| {
12580                    TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
12581                });
12582                workspace.add_item_to_active_pane(Box::new(item), None, true, window, cx);
12583
12584                let panel = cx.new(|cx| TestPanel::new_flexible(DockPosition::Right, 100, cx));
12585                workspace.add_panel(panel.clone(), window, cx);
12586                workspace.toggle_dock(DockPosition::Right, window, cx);
12587                panel
12588            });
12589
12590            workspace.update_in(cx, |workspace, window, cx| {
12591                workspace.resize_right_dock(px(300.), window, cx);
12592            });
12593
12594            cx.run_until_parked();
12595
12596            let persisted = workspace
12597                .read_with(cx, |workspace, cx| {
12598                    workspace.persisted_panel_size_state(TestPanel::panel_key(), cx)
12599                })
12600                .expect("flexible panel state should be persisted to KVP");
12601            assert_eq!(
12602                persisted.size, None,
12603                "flexible panel should not persist a redundant pixel size"
12604            );
12605            let original_ratio = persisted.flex.expect("panel's flex should be persisted");
12606
12607            // Remove the panel and re-add: both size and ratio should be restored.
12608            workspace.update_in(cx, |workspace, window, cx| {
12609                workspace.remove_panel(&panel, window, cx);
12610            });
12611
12612            workspace.update_in(cx, |workspace, window, cx| {
12613                let new_panel = cx.new(|cx| TestPanel::new_flexible(DockPosition::Right, 100, cx));
12614                workspace.add_panel(new_panel, window, cx);
12615
12616                let right_dock = workspace.right_dock().read(cx);
12617                let size_state = right_dock
12618                    .panel::<TestPanel>()
12619                    .and_then(|p| right_dock.stored_panel_size_state(&p))
12620                    .expect("re-added flexible panel should have restored size state from KVP");
12621                assert_eq!(
12622                    size_state.size, None,
12623                    "re-added flexible panel should not have a persisted pixel size"
12624                );
12625                assert_eq!(
12626                    size_state.flex,
12627                    Some(original_ratio),
12628                    "re-added flexible panel should restore persisted flex"
12629                );
12630            });
12631        }
12632    }
12633
12634    #[gpui::test]
12635    async fn test_flexible_panel_left_dock_sizing(cx: &mut gpui::TestAppContext) {
12636        init_test(cx);
12637        let fs = FakeFs::new(cx.executor());
12638
12639        let project = Project::test(fs, [], cx).await;
12640        let (multi_workspace, cx) =
12641            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
12642        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
12643
12644        workspace.update(cx, |workspace, _cx| {
12645            workspace.bounds.size.width = px(900.);
12646        });
12647
12648        // Step 1: Add a tab to the center pane then open a flexible panel in the left
12649        // dock. With one full-width center pane the default ratio is 0.5, so the panel
12650        // and the center pane each take half the workspace width.
12651        workspace.update_in(cx, |workspace, window, cx| {
12652            let item = cx.new(|cx| {
12653                TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
12654            });
12655            workspace.add_item_to_active_pane(Box::new(item), None, true, window, cx);
12656
12657            let panel = cx.new(|cx| TestPanel::new_flexible(DockPosition::Left, 100, cx));
12658            workspace.add_panel(panel, window, cx);
12659            workspace.toggle_dock(DockPosition::Left, window, cx);
12660
12661            let left_dock = workspace.left_dock().read(cx);
12662            let left_width = workspace
12663                .dock_size(&left_dock, window, cx)
12664                .expect("left dock should have an active panel");
12665
12666            assert_eq!(
12667                left_width,
12668                workspace.bounds.size.width / 2.,
12669                "flexible left panel should split evenly with the center pane"
12670            );
12671        });
12672
12673        // Step 2: Split the center pane vertically (top/bottom). Vertical splits do not
12674        // change horizontal width fractions, so the flexible panel stays at the same
12675        // width as each half of the split.
12676        workspace.update_in(cx, |workspace, window, cx| {
12677            workspace.split_pane(
12678                workspace.active_pane().clone(),
12679                SplitDirection::Down,
12680                window,
12681                cx,
12682            );
12683
12684            let left_dock = workspace.left_dock().read(cx);
12685            let left_width = workspace
12686                .dock_size(&left_dock, window, cx)
12687                .expect("left dock should still have an active panel after vertical split");
12688
12689            assert_eq!(
12690                left_width,
12691                workspace.bounds.size.width / 2.,
12692                "flexible left panel width should match each vertically-split pane"
12693            );
12694        });
12695
12696        // Step 3: Open a fixed-width panel in the right dock. The right dock's default
12697        // size reduces the available width, so the flexible left panel and the center
12698        // panes all shrink proportionally to accommodate it.
12699        workspace.update_in(cx, |workspace, window, cx| {
12700            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 200, cx));
12701            workspace.add_panel(panel, window, cx);
12702            workspace.toggle_dock(DockPosition::Right, window, cx);
12703
12704            let right_dock = workspace.right_dock().read(cx);
12705            let right_width = workspace
12706                .dock_size(&right_dock, window, cx)
12707                .expect("right dock should have an active panel");
12708
12709            let left_dock = workspace.left_dock().read(cx);
12710            let left_width = workspace
12711                .dock_size(&left_dock, window, cx)
12712                .expect("left dock should still have an active panel");
12713
12714            let available_width = workspace.bounds.size.width - right_width;
12715            assert_eq!(
12716                left_width,
12717                available_width / 2.,
12718                "flexible left panel should shrink proportionally as the right dock takes space"
12719            );
12720        });
12721
12722        // Step 4: Toggle the right dock's panel to flexible. Now both docks use
12723        // flex sizing and the workspace width is divided among left-flex, center
12724        // (implicit flex 1.0), and right-flex.
12725        workspace.update_in(cx, |workspace, window, cx| {
12726            let right_dock = workspace.right_dock().clone();
12727            let right_panel = right_dock
12728                .read(cx)
12729                .visible_panel()
12730                .expect("right dock should have a visible panel")
12731                .clone();
12732            workspace.toggle_dock_panel_flexible_size(
12733                &right_dock,
12734                right_panel.as_ref(),
12735                window,
12736                cx,
12737            );
12738
12739            let right_dock = right_dock.read(cx);
12740            let right_panel = right_dock
12741                .visible_panel()
12742                .expect("right dock should still have a visible panel");
12743            assert!(
12744                right_panel.has_flexible_size(window, cx),
12745                "right panel should now be flexible"
12746            );
12747
12748            let right_size_state = right_dock
12749                .stored_panel_size_state(right_panel.as_ref())
12750                .expect("right panel should have a stored size state after toggling");
12751            let right_flex = right_size_state
12752                .flex
12753                .expect("right panel should have a flex value after toggling");
12754
12755            let left_dock = workspace.left_dock().read(cx);
12756            let left_width = workspace
12757                .dock_size(&left_dock, window, cx)
12758                .expect("left dock should still have an active panel");
12759            let right_width = workspace
12760                .dock_size(&right_dock, window, cx)
12761                .expect("right dock should still have an active panel");
12762
12763            let left_flex = workspace
12764                .default_dock_flex(DockPosition::Left)
12765                .expect("left dock should have a default flex");
12766
12767            let total_flex = left_flex + 1.0 + right_flex;
12768            let expected_left = left_flex / total_flex * workspace.bounds.size.width;
12769            let expected_right = right_flex / total_flex * workspace.bounds.size.width;
12770            assert_eq!(
12771                left_width, expected_left,
12772                "flexible left panel should share workspace width via flex ratios"
12773            );
12774            assert_eq!(
12775                right_width, expected_right,
12776                "flexible right panel should share workspace width via flex ratios"
12777            );
12778        });
12779    }
12780
12781    struct TestModal(FocusHandle);
12782
12783    impl TestModal {
12784        fn new(_: &mut Window, cx: &mut Context<Self>) -> Self {
12785            Self(cx.focus_handle())
12786        }
12787    }
12788
12789    impl EventEmitter<DismissEvent> for TestModal {}
12790
12791    impl Focusable for TestModal {
12792        fn focus_handle(&self, _cx: &App) -> FocusHandle {
12793            self.0.clone()
12794        }
12795    }
12796
12797    impl ModalView for TestModal {}
12798
12799    impl Render for TestModal {
12800        fn render(
12801            &mut self,
12802            _window: &mut Window,
12803            _cx: &mut Context<TestModal>,
12804        ) -> impl IntoElement {
12805            div().track_focus(&self.0)
12806        }
12807    }
12808
12809    #[gpui::test]
12810    async fn test_panels(cx: &mut gpui::TestAppContext) {
12811        init_test(cx);
12812        let fs = FakeFs::new(cx.executor());
12813
12814        let project = Project::test(fs, [], cx).await;
12815        let (multi_workspace, cx) =
12816            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
12817        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
12818
12819        let (panel_1, panel_2) = workspace.update_in(cx, |workspace, window, cx| {
12820            let panel_1 = cx.new(|cx| TestPanel::new(DockPosition::Left, 100, cx));
12821            workspace.add_panel(panel_1.clone(), window, cx);
12822            workspace.toggle_dock(DockPosition::Left, window, cx);
12823            let panel_2 = cx.new(|cx| TestPanel::new(DockPosition::Right, 101, cx));
12824            workspace.add_panel(panel_2.clone(), window, cx);
12825            workspace.toggle_dock(DockPosition::Right, window, cx);
12826
12827            let left_dock = workspace.left_dock();
12828            assert_eq!(
12829                left_dock.read(cx).visible_panel().unwrap().panel_id(),
12830                panel_1.panel_id()
12831            );
12832            assert_eq!(
12833                workspace.dock_size(&left_dock.read(cx), window, cx),
12834                Some(px(300.))
12835            );
12836
12837            workspace.resize_left_dock(px(1337.), window, cx);
12838            assert_eq!(
12839                workspace
12840                    .right_dock()
12841                    .read(cx)
12842                    .visible_panel()
12843                    .unwrap()
12844                    .panel_id(),
12845                panel_2.panel_id(),
12846            );
12847
12848            (panel_1, panel_2)
12849        });
12850
12851        // Move panel_1 to the right
12852        panel_1.update_in(cx, |panel_1, window, cx| {
12853            panel_1.set_position(DockPosition::Right, window, cx)
12854        });
12855
12856        workspace.update_in(cx, |workspace, window, cx| {
12857            // Since panel_1 was visible on the left, it should now be visible now that it's been moved to the right.
12858            // Since it was the only panel on the left, the left dock should now be closed.
12859            assert!(!workspace.left_dock().read(cx).is_open());
12860            assert!(workspace.left_dock().read(cx).visible_panel().is_none());
12861            let right_dock = workspace.right_dock();
12862            assert_eq!(
12863                right_dock.read(cx).visible_panel().unwrap().panel_id(),
12864                panel_1.panel_id()
12865            );
12866            assert_eq!(
12867                right_dock
12868                    .read(cx)
12869                    .active_panel_size()
12870                    .unwrap()
12871                    .size
12872                    .unwrap(),
12873                px(1337.)
12874            );
12875
12876            // Now we move panel_2 to the left
12877            panel_2.set_position(DockPosition::Left, window, cx);
12878        });
12879
12880        workspace.update(cx, |workspace, cx| {
12881            // Since panel_2 was not visible on the right, we don't open the left dock.
12882            assert!(!workspace.left_dock().read(cx).is_open());
12883            // And the right dock is unaffected in its displaying of panel_1
12884            assert!(workspace.right_dock().read(cx).is_open());
12885            assert_eq!(
12886                workspace
12887                    .right_dock()
12888                    .read(cx)
12889                    .visible_panel()
12890                    .unwrap()
12891                    .panel_id(),
12892                panel_1.panel_id(),
12893            );
12894        });
12895
12896        // Move panel_1 back to the left
12897        panel_1.update_in(cx, |panel_1, window, cx| {
12898            panel_1.set_position(DockPosition::Left, window, cx)
12899        });
12900
12901        workspace.update_in(cx, |workspace, window, cx| {
12902            // Since panel_1 was visible on the right, we open the left dock and make panel_1 active.
12903            let left_dock = workspace.left_dock();
12904            assert!(left_dock.read(cx).is_open());
12905            assert_eq!(
12906                left_dock.read(cx).visible_panel().unwrap().panel_id(),
12907                panel_1.panel_id()
12908            );
12909            assert_eq!(
12910                workspace.dock_size(&left_dock.read(cx), window, cx),
12911                Some(px(1337.))
12912            );
12913            // And the right dock should be closed as it no longer has any panels.
12914            assert!(!workspace.right_dock().read(cx).is_open());
12915
12916            // Now we move panel_1 to the bottom
12917            panel_1.set_position(DockPosition::Bottom, window, cx);
12918        });
12919
12920        workspace.update_in(cx, |workspace, window, cx| {
12921            // Since panel_1 was visible on the left, we close the left dock.
12922            assert!(!workspace.left_dock().read(cx).is_open());
12923            // The bottom dock is sized based on the panel's default size,
12924            // since the panel orientation changed from vertical to horizontal.
12925            let bottom_dock = workspace.bottom_dock();
12926            assert_eq!(
12927                workspace.dock_size(&bottom_dock.read(cx), window, cx),
12928                Some(px(300.))
12929            );
12930            // Close bottom dock and move panel_1 back to the left.
12931            bottom_dock.update(cx, |bottom_dock, cx| {
12932                bottom_dock.set_open(false, window, cx)
12933            });
12934            panel_1.set_position(DockPosition::Left, window, cx);
12935        });
12936
12937        // Emit activated event on panel 1
12938        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Activate));
12939
12940        // Now the left dock is open and panel_1 is active and focused.
12941        workspace.update_in(cx, |workspace, window, cx| {
12942            let left_dock = workspace.left_dock();
12943            assert!(left_dock.read(cx).is_open());
12944            assert_eq!(
12945                left_dock.read(cx).visible_panel().unwrap().panel_id(),
12946                panel_1.panel_id(),
12947            );
12948            assert!(panel_1.focus_handle(cx).is_focused(window));
12949        });
12950
12951        // Emit closed event on panel 2, which is not active
12952        panel_2.update(cx, |_, cx| cx.emit(PanelEvent::Close));
12953
12954        // Wo don't close the left dock, because panel_2 wasn't the active panel
12955        workspace.update(cx, |workspace, cx| {
12956            let left_dock = workspace.left_dock();
12957            assert!(left_dock.read(cx).is_open());
12958            assert_eq!(
12959                left_dock.read(cx).visible_panel().unwrap().panel_id(),
12960                panel_1.panel_id(),
12961            );
12962        });
12963
12964        // Emitting a ZoomIn event shows the panel as zoomed.
12965        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomIn));
12966        workspace.read_with(cx, |workspace, _| {
12967            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
12968            assert_eq!(workspace.zoomed_position, Some(DockPosition::Left));
12969        });
12970
12971        // Move panel to another dock while it is zoomed
12972        panel_1.update_in(cx, |panel, window, cx| {
12973            panel.set_position(DockPosition::Right, window, cx)
12974        });
12975        workspace.read_with(cx, |workspace, _| {
12976            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
12977
12978            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
12979        });
12980
12981        // This is a helper for getting a:
12982        // - valid focus on an element,
12983        // - that isn't a part of the panes and panels system of the Workspace,
12984        // - and doesn't trigger the 'on_focus_lost' API.
12985        let focus_other_view = {
12986            let workspace = workspace.clone();
12987            move |cx: &mut VisualTestContext| {
12988                workspace.update_in(cx, |workspace, window, cx| {
12989                    if workspace.active_modal::<TestModal>(cx).is_some() {
12990                        workspace.toggle_modal(window, cx, TestModal::new);
12991                        workspace.toggle_modal(window, cx, TestModal::new);
12992                    } else {
12993                        workspace.toggle_modal(window, cx, TestModal::new);
12994                    }
12995                })
12996            }
12997        };
12998
12999        // If focus is transferred to another view that's not a panel or another pane, we still show
13000        // the panel as zoomed.
13001        focus_other_view(cx);
13002        workspace.read_with(cx, |workspace, _| {
13003            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
13004            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
13005        });
13006
13007        // If focus is transferred elsewhere in the workspace, the panel is no longer zoomed.
13008        workspace.update_in(cx, |_workspace, window, cx| {
13009            cx.focus_self(window);
13010        });
13011        workspace.read_with(cx, |workspace, _| {
13012            assert_eq!(workspace.zoomed, None);
13013            assert_eq!(workspace.zoomed_position, None);
13014        });
13015
13016        // If focus is transferred again to another view that's not a panel or a pane, we won't
13017        // show the panel as zoomed because it wasn't zoomed before.
13018        focus_other_view(cx);
13019        workspace.read_with(cx, |workspace, _| {
13020            assert_eq!(workspace.zoomed, None);
13021            assert_eq!(workspace.zoomed_position, None);
13022        });
13023
13024        // When the panel is activated, it is zoomed again.
13025        cx.dispatch_action(ToggleRightDock);
13026        workspace.read_with(cx, |workspace, _| {
13027            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
13028            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
13029        });
13030
13031        // Emitting a ZoomOut event unzooms the panel.
13032        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomOut));
13033        workspace.read_with(cx, |workspace, _| {
13034            assert_eq!(workspace.zoomed, None);
13035            assert_eq!(workspace.zoomed_position, None);
13036        });
13037
13038        // Emit closed event on panel 1, which is active
13039        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Close));
13040
13041        // Now the left dock is closed, because panel_1 was the active panel
13042        workspace.update(cx, |workspace, cx| {
13043            let right_dock = workspace.right_dock();
13044            assert!(!right_dock.read(cx).is_open());
13045        });
13046    }
13047
13048    #[gpui::test]
13049    async fn test_no_save_prompt_when_multi_buffer_dirty_items_closed(cx: &mut TestAppContext) {
13050        init_test(cx);
13051
13052        let fs = FakeFs::new(cx.background_executor.clone());
13053        let project = Project::test(fs, [], cx).await;
13054        let (workspace, cx) =
13055            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13056        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13057
13058        let dirty_regular_buffer = cx.new(|cx| {
13059            TestItem::new(cx)
13060                .with_dirty(true)
13061                .with_label("1.txt")
13062                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
13063        });
13064        let dirty_regular_buffer_2 = cx.new(|cx| {
13065            TestItem::new(cx)
13066                .with_dirty(true)
13067                .with_label("2.txt")
13068                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
13069        });
13070        let dirty_multi_buffer_with_both = cx.new(|cx| {
13071            TestItem::new(cx)
13072                .with_dirty(true)
13073                .with_buffer_kind(ItemBufferKind::Multibuffer)
13074                .with_label("Fake Project Search")
13075                .with_project_items(&[
13076                    dirty_regular_buffer.read(cx).project_items[0].clone(),
13077                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
13078                ])
13079        });
13080        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
13081        workspace.update_in(cx, |workspace, window, cx| {
13082            workspace.add_item(
13083                pane.clone(),
13084                Box::new(dirty_regular_buffer.clone()),
13085                None,
13086                false,
13087                false,
13088                window,
13089                cx,
13090            );
13091            workspace.add_item(
13092                pane.clone(),
13093                Box::new(dirty_regular_buffer_2.clone()),
13094                None,
13095                false,
13096                false,
13097                window,
13098                cx,
13099            );
13100            workspace.add_item(
13101                pane.clone(),
13102                Box::new(dirty_multi_buffer_with_both.clone()),
13103                None,
13104                false,
13105                false,
13106                window,
13107                cx,
13108            );
13109        });
13110
13111        pane.update_in(cx, |pane, window, cx| {
13112            pane.activate_item(2, true, true, window, cx);
13113            assert_eq!(
13114                pane.active_item().unwrap().item_id(),
13115                multi_buffer_with_both_files_id,
13116                "Should select the multi buffer in the pane"
13117            );
13118        });
13119        let close_all_but_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
13120            pane.close_other_items(
13121                &CloseOtherItems {
13122                    save_intent: Some(SaveIntent::Save),
13123                    close_pinned: true,
13124                },
13125                None,
13126                window,
13127                cx,
13128            )
13129        });
13130        cx.background_executor.run_until_parked();
13131        assert!(!cx.has_pending_prompt());
13132        close_all_but_multi_buffer_task
13133            .await
13134            .expect("Closing all buffers but the multi buffer failed");
13135        pane.update(cx, |pane, cx| {
13136            assert_eq!(dirty_regular_buffer.read(cx).save_count, 1);
13137            assert_eq!(dirty_multi_buffer_with_both.read(cx).save_count, 0);
13138            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 1);
13139            assert_eq!(pane.items_len(), 1);
13140            assert_eq!(
13141                pane.active_item().unwrap().item_id(),
13142                multi_buffer_with_both_files_id,
13143                "Should have only the multi buffer left in the pane"
13144            );
13145            assert!(
13146                dirty_multi_buffer_with_both.read(cx).is_dirty,
13147                "The multi buffer containing the unsaved buffer should still be dirty"
13148            );
13149        });
13150
13151        dirty_regular_buffer.update(cx, |buffer, cx| {
13152            buffer.project_items[0].update(cx, |pi, _| pi.is_dirty = true)
13153        });
13154
13155        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
13156            pane.close_active_item(
13157                &CloseActiveItem {
13158                    save_intent: Some(SaveIntent::Close),
13159                    close_pinned: false,
13160                },
13161                window,
13162                cx,
13163            )
13164        });
13165        cx.background_executor.run_until_parked();
13166        assert!(
13167            cx.has_pending_prompt(),
13168            "Dirty multi buffer should prompt a save dialog"
13169        );
13170        cx.simulate_prompt_answer("Save");
13171        cx.background_executor.run_until_parked();
13172        close_multi_buffer_task
13173            .await
13174            .expect("Closing the multi buffer failed");
13175        pane.update(cx, |pane, cx| {
13176            assert_eq!(
13177                dirty_multi_buffer_with_both.read(cx).save_count,
13178                1,
13179                "Multi buffer item should get be saved"
13180            );
13181            // Test impl does not save inner items, so we do not assert them
13182            assert_eq!(
13183                pane.items_len(),
13184                0,
13185                "No more items should be left in the pane"
13186            );
13187            assert!(pane.active_item().is_none());
13188        });
13189    }
13190
13191    #[gpui::test]
13192    async fn test_save_prompt_when_dirty_multi_buffer_closed_with_some_of_its_dirty_items_not_present_in_the_pane(
13193        cx: &mut TestAppContext,
13194    ) {
13195        init_test(cx);
13196
13197        let fs = FakeFs::new(cx.background_executor.clone());
13198        let project = Project::test(fs, [], cx).await;
13199        let (workspace, cx) =
13200            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13201        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13202
13203        let dirty_regular_buffer = cx.new(|cx| {
13204            TestItem::new(cx)
13205                .with_dirty(true)
13206                .with_label("1.txt")
13207                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
13208        });
13209        let dirty_regular_buffer_2 = cx.new(|cx| {
13210            TestItem::new(cx)
13211                .with_dirty(true)
13212                .with_label("2.txt")
13213                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
13214        });
13215        let clear_regular_buffer = cx.new(|cx| {
13216            TestItem::new(cx)
13217                .with_label("3.txt")
13218                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
13219        });
13220
13221        let dirty_multi_buffer_with_both = cx.new(|cx| {
13222            TestItem::new(cx)
13223                .with_dirty(true)
13224                .with_buffer_kind(ItemBufferKind::Multibuffer)
13225                .with_label("Fake Project Search")
13226                .with_project_items(&[
13227                    dirty_regular_buffer.read(cx).project_items[0].clone(),
13228                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
13229                    clear_regular_buffer.read(cx).project_items[0].clone(),
13230                ])
13231        });
13232        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
13233        workspace.update_in(cx, |workspace, window, cx| {
13234            workspace.add_item(
13235                pane.clone(),
13236                Box::new(dirty_regular_buffer.clone()),
13237                None,
13238                false,
13239                false,
13240                window,
13241                cx,
13242            );
13243            workspace.add_item(
13244                pane.clone(),
13245                Box::new(dirty_multi_buffer_with_both.clone()),
13246                None,
13247                false,
13248                false,
13249                window,
13250                cx,
13251            );
13252        });
13253
13254        pane.update_in(cx, |pane, window, cx| {
13255            pane.activate_item(1, true, true, window, cx);
13256            assert_eq!(
13257                pane.active_item().unwrap().item_id(),
13258                multi_buffer_with_both_files_id,
13259                "Should select the multi buffer in the pane"
13260            );
13261        });
13262        let _close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
13263            pane.close_active_item(
13264                &CloseActiveItem {
13265                    save_intent: None,
13266                    close_pinned: false,
13267                },
13268                window,
13269                cx,
13270            )
13271        });
13272        cx.background_executor.run_until_parked();
13273        assert!(
13274            cx.has_pending_prompt(),
13275            "With one dirty item from the multi buffer not being in the pane, a save prompt should be shown"
13276        );
13277    }
13278
13279    /// Tests that when `close_on_file_delete` is enabled, files are automatically
13280    /// closed when they are deleted from disk.
13281    #[gpui::test]
13282    async fn test_close_on_disk_deletion_enabled(cx: &mut TestAppContext) {
13283        init_test(cx);
13284
13285        // Enable the close_on_disk_deletion setting
13286        cx.update_global(|store: &mut SettingsStore, cx| {
13287            store.update_user_settings(cx, |settings| {
13288                settings.workspace.close_on_file_delete = Some(true);
13289            });
13290        });
13291
13292        let fs = FakeFs::new(cx.background_executor.clone());
13293        let project = Project::test(fs, [], cx).await;
13294        let (workspace, cx) =
13295            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13296        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13297
13298        // Create a test item that simulates a file
13299        let item = cx.new(|cx| {
13300            TestItem::new(cx)
13301                .with_label("test.txt")
13302                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
13303        });
13304
13305        // Add item to workspace
13306        workspace.update_in(cx, |workspace, window, cx| {
13307            workspace.add_item(
13308                pane.clone(),
13309                Box::new(item.clone()),
13310                None,
13311                false,
13312                false,
13313                window,
13314                cx,
13315            );
13316        });
13317
13318        // Verify the item is in the pane
13319        pane.read_with(cx, |pane, _| {
13320            assert_eq!(pane.items().count(), 1);
13321        });
13322
13323        // Simulate file deletion by setting the item's deleted state
13324        item.update(cx, |item, _| {
13325            item.set_has_deleted_file(true);
13326        });
13327
13328        // Emit UpdateTab event to trigger the close behavior
13329        cx.run_until_parked();
13330        item.update(cx, |_, cx| {
13331            cx.emit(ItemEvent::UpdateTab);
13332        });
13333
13334        // Allow the close operation to complete
13335        cx.run_until_parked();
13336
13337        // Verify the item was automatically closed
13338        pane.read_with(cx, |pane, _| {
13339            assert_eq!(
13340                pane.items().count(),
13341                0,
13342                "Item should be automatically closed when file is deleted"
13343            );
13344        });
13345    }
13346
13347    /// Tests that when `close_on_file_delete` is disabled (default), files remain
13348    /// open with a strikethrough when they are deleted from disk.
13349    #[gpui::test]
13350    async fn test_close_on_disk_deletion_disabled(cx: &mut TestAppContext) {
13351        init_test(cx);
13352
13353        // Ensure close_on_disk_deletion is disabled (default)
13354        cx.update_global(|store: &mut SettingsStore, cx| {
13355            store.update_user_settings(cx, |settings| {
13356                settings.workspace.close_on_file_delete = Some(false);
13357            });
13358        });
13359
13360        let fs = FakeFs::new(cx.background_executor.clone());
13361        let project = Project::test(fs, [], cx).await;
13362        let (workspace, cx) =
13363            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13364        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13365
13366        // Create a test item that simulates a file
13367        let item = cx.new(|cx| {
13368            TestItem::new(cx)
13369                .with_label("test.txt")
13370                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
13371        });
13372
13373        // Add item to workspace
13374        workspace.update_in(cx, |workspace, window, cx| {
13375            workspace.add_item(
13376                pane.clone(),
13377                Box::new(item.clone()),
13378                None,
13379                false,
13380                false,
13381                window,
13382                cx,
13383            );
13384        });
13385
13386        // Verify the item is in the pane
13387        pane.read_with(cx, |pane, _| {
13388            assert_eq!(pane.items().count(), 1);
13389        });
13390
13391        // Simulate file deletion
13392        item.update(cx, |item, _| {
13393            item.set_has_deleted_file(true);
13394        });
13395
13396        // Emit UpdateTab event
13397        cx.run_until_parked();
13398        item.update(cx, |_, cx| {
13399            cx.emit(ItemEvent::UpdateTab);
13400        });
13401
13402        // Allow any potential close operation to complete
13403        cx.run_until_parked();
13404
13405        // Verify the item remains open (with strikethrough)
13406        pane.read_with(cx, |pane, _| {
13407            assert_eq!(
13408                pane.items().count(),
13409                1,
13410                "Item should remain open when close_on_disk_deletion is disabled"
13411            );
13412        });
13413
13414        // Verify the item shows as deleted
13415        item.read_with(cx, |item, _| {
13416            assert!(
13417                item.has_deleted_file,
13418                "Item should be marked as having deleted file"
13419            );
13420        });
13421    }
13422
13423    /// Tests that dirty files are not automatically closed when deleted from disk,
13424    /// even when `close_on_file_delete` is enabled. This ensures users don't lose
13425    /// unsaved changes without being prompted.
13426    #[gpui::test]
13427    async fn test_close_on_disk_deletion_with_dirty_file(cx: &mut TestAppContext) {
13428        init_test(cx);
13429
13430        // Enable the close_on_file_delete setting
13431        cx.update_global(|store: &mut SettingsStore, cx| {
13432            store.update_user_settings(cx, |settings| {
13433                settings.workspace.close_on_file_delete = Some(true);
13434            });
13435        });
13436
13437        let fs = FakeFs::new(cx.background_executor.clone());
13438        let project = Project::test(fs, [], cx).await;
13439        let (workspace, cx) =
13440            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13441        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13442
13443        // Create a dirty test item
13444        let item = cx.new(|cx| {
13445            TestItem::new(cx)
13446                .with_dirty(true)
13447                .with_label("test.txt")
13448                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
13449        });
13450
13451        // Add item to workspace
13452        workspace.update_in(cx, |workspace, window, cx| {
13453            workspace.add_item(
13454                pane.clone(),
13455                Box::new(item.clone()),
13456                None,
13457                false,
13458                false,
13459                window,
13460                cx,
13461            );
13462        });
13463
13464        // Simulate file deletion
13465        item.update(cx, |item, _| {
13466            item.set_has_deleted_file(true);
13467        });
13468
13469        // Emit UpdateTab event to trigger the close behavior
13470        cx.run_until_parked();
13471        item.update(cx, |_, cx| {
13472            cx.emit(ItemEvent::UpdateTab);
13473        });
13474
13475        // Allow any potential close operation to complete
13476        cx.run_until_parked();
13477
13478        // Verify the item remains open (dirty files are not auto-closed)
13479        pane.read_with(cx, |pane, _| {
13480            assert_eq!(
13481                pane.items().count(),
13482                1,
13483                "Dirty items should not be automatically closed even when file is deleted"
13484            );
13485        });
13486
13487        // Verify the item is marked as deleted and still dirty
13488        item.read_with(cx, |item, _| {
13489            assert!(
13490                item.has_deleted_file,
13491                "Item should be marked as having deleted file"
13492            );
13493            assert!(item.is_dirty, "Item should still be dirty");
13494        });
13495    }
13496
13497    /// Tests that navigation history is cleaned up when files are auto-closed
13498    /// due to deletion from disk.
13499    #[gpui::test]
13500    async fn test_close_on_disk_deletion_cleans_navigation_history(cx: &mut TestAppContext) {
13501        init_test(cx);
13502
13503        // Enable the close_on_file_delete setting
13504        cx.update_global(|store: &mut SettingsStore, cx| {
13505            store.update_user_settings(cx, |settings| {
13506                settings.workspace.close_on_file_delete = Some(true);
13507            });
13508        });
13509
13510        let fs = FakeFs::new(cx.background_executor.clone());
13511        let project = Project::test(fs, [], cx).await;
13512        let (workspace, cx) =
13513            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13514        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13515
13516        // Create test items
13517        let item1 = cx.new(|cx| {
13518            TestItem::new(cx)
13519                .with_label("test1.txt")
13520                .with_project_items(&[TestProjectItem::new(1, "test1.txt", cx)])
13521        });
13522        let item1_id = item1.item_id();
13523
13524        let item2 = cx.new(|cx| {
13525            TestItem::new(cx)
13526                .with_label("test2.txt")
13527                .with_project_items(&[TestProjectItem::new(2, "test2.txt", cx)])
13528        });
13529
13530        // Add items to workspace
13531        workspace.update_in(cx, |workspace, window, cx| {
13532            workspace.add_item(
13533                pane.clone(),
13534                Box::new(item1.clone()),
13535                None,
13536                false,
13537                false,
13538                window,
13539                cx,
13540            );
13541            workspace.add_item(
13542                pane.clone(),
13543                Box::new(item2.clone()),
13544                None,
13545                false,
13546                false,
13547                window,
13548                cx,
13549            );
13550        });
13551
13552        // Activate item1 to ensure it gets navigation entries
13553        pane.update_in(cx, |pane, window, cx| {
13554            pane.activate_item(0, true, true, window, cx);
13555        });
13556
13557        // Switch to item2 and back to create navigation history
13558        pane.update_in(cx, |pane, window, cx| {
13559            pane.activate_item(1, true, true, window, cx);
13560        });
13561        cx.run_until_parked();
13562
13563        pane.update_in(cx, |pane, window, cx| {
13564            pane.activate_item(0, true, true, window, cx);
13565        });
13566        cx.run_until_parked();
13567
13568        // Simulate file deletion for item1
13569        item1.update(cx, |item, _| {
13570            item.set_has_deleted_file(true);
13571        });
13572
13573        // Emit UpdateTab event to trigger the close behavior
13574        item1.update(cx, |_, cx| {
13575            cx.emit(ItemEvent::UpdateTab);
13576        });
13577        cx.run_until_parked();
13578
13579        // Verify item1 was closed
13580        pane.read_with(cx, |pane, _| {
13581            assert_eq!(
13582                pane.items().count(),
13583                1,
13584                "Should have 1 item remaining after auto-close"
13585            );
13586        });
13587
13588        // Check navigation history after close
13589        let has_item = pane.read_with(cx, |pane, cx| {
13590            let mut has_item = false;
13591            pane.nav_history().for_each_entry(cx, &mut |entry, _| {
13592                if entry.item.id() == item1_id {
13593                    has_item = true;
13594                }
13595            });
13596            has_item
13597        });
13598
13599        assert!(
13600            !has_item,
13601            "Navigation history should not contain closed item entries"
13602        );
13603    }
13604
13605    #[gpui::test]
13606    async fn test_no_save_prompt_when_dirty_multi_buffer_closed_with_all_of_its_dirty_items_present_in_the_pane(
13607        cx: &mut TestAppContext,
13608    ) {
13609        init_test(cx);
13610
13611        let fs = FakeFs::new(cx.background_executor.clone());
13612        let project = Project::test(fs, [], cx).await;
13613        let (workspace, cx) =
13614            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13615        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13616
13617        let dirty_regular_buffer = cx.new(|cx| {
13618            TestItem::new(cx)
13619                .with_dirty(true)
13620                .with_label("1.txt")
13621                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
13622        });
13623        let dirty_regular_buffer_2 = cx.new(|cx| {
13624            TestItem::new(cx)
13625                .with_dirty(true)
13626                .with_label("2.txt")
13627                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
13628        });
13629        let clear_regular_buffer = cx.new(|cx| {
13630            TestItem::new(cx)
13631                .with_label("3.txt")
13632                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
13633        });
13634
13635        let dirty_multi_buffer = cx.new(|cx| {
13636            TestItem::new(cx)
13637                .with_dirty(true)
13638                .with_buffer_kind(ItemBufferKind::Multibuffer)
13639                .with_label("Fake Project Search")
13640                .with_project_items(&[
13641                    dirty_regular_buffer.read(cx).project_items[0].clone(),
13642                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
13643                    clear_regular_buffer.read(cx).project_items[0].clone(),
13644                ])
13645        });
13646        workspace.update_in(cx, |workspace, window, cx| {
13647            workspace.add_item(
13648                pane.clone(),
13649                Box::new(dirty_regular_buffer.clone()),
13650                None,
13651                false,
13652                false,
13653                window,
13654                cx,
13655            );
13656            workspace.add_item(
13657                pane.clone(),
13658                Box::new(dirty_regular_buffer_2.clone()),
13659                None,
13660                false,
13661                false,
13662                window,
13663                cx,
13664            );
13665            workspace.add_item(
13666                pane.clone(),
13667                Box::new(dirty_multi_buffer.clone()),
13668                None,
13669                false,
13670                false,
13671                window,
13672                cx,
13673            );
13674        });
13675
13676        pane.update_in(cx, |pane, window, cx| {
13677            pane.activate_item(2, true, true, window, cx);
13678            assert_eq!(
13679                pane.active_item().unwrap().item_id(),
13680                dirty_multi_buffer.item_id(),
13681                "Should select the multi buffer in the pane"
13682            );
13683        });
13684        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
13685            pane.close_active_item(
13686                &CloseActiveItem {
13687                    save_intent: None,
13688                    close_pinned: false,
13689                },
13690                window,
13691                cx,
13692            )
13693        });
13694        cx.background_executor.run_until_parked();
13695        assert!(
13696            !cx.has_pending_prompt(),
13697            "All dirty items from the multi buffer are in the pane still, no save prompts should be shown"
13698        );
13699        close_multi_buffer_task
13700            .await
13701            .expect("Closing multi buffer failed");
13702        pane.update(cx, |pane, cx| {
13703            assert_eq!(dirty_regular_buffer.read(cx).save_count, 0);
13704            assert_eq!(dirty_multi_buffer.read(cx).save_count, 0);
13705            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 0);
13706            assert_eq!(
13707                pane.items()
13708                    .map(|item| item.item_id())
13709                    .sorted()
13710                    .collect::<Vec<_>>(),
13711                vec![
13712                    dirty_regular_buffer.item_id(),
13713                    dirty_regular_buffer_2.item_id(),
13714                ],
13715                "Should have no multi buffer left in the pane"
13716            );
13717            assert!(dirty_regular_buffer.read(cx).is_dirty);
13718            assert!(dirty_regular_buffer_2.read(cx).is_dirty);
13719        });
13720    }
13721
13722    #[gpui::test]
13723    async fn test_move_focused_panel_to_next_position(cx: &mut gpui::TestAppContext) {
13724        init_test(cx);
13725        let fs = FakeFs::new(cx.executor());
13726        let project = Project::test(fs, [], cx).await;
13727        let (multi_workspace, cx) =
13728            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
13729        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
13730
13731        // Add a new panel to the right dock, opening the dock and setting the
13732        // focus to the new panel.
13733        let panel = workspace.update_in(cx, |workspace, window, cx| {
13734            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
13735            workspace.add_panel(panel.clone(), window, cx);
13736
13737            workspace
13738                .right_dock()
13739                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
13740
13741            workspace.toggle_panel_focus::<TestPanel>(window, cx);
13742
13743            panel
13744        });
13745
13746        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
13747        // panel to the next valid position which, in this case, is the left
13748        // dock.
13749        cx.dispatch_action(MoveFocusedPanelToNextPosition);
13750        workspace.update(cx, |workspace, cx| {
13751            assert!(workspace.left_dock().read(cx).is_open());
13752            assert_eq!(panel.read(cx).position, DockPosition::Left);
13753        });
13754
13755        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
13756        // panel to the next valid position which, in this case, is the bottom
13757        // dock.
13758        cx.dispatch_action(MoveFocusedPanelToNextPosition);
13759        workspace.update(cx, |workspace, cx| {
13760            assert!(workspace.bottom_dock().read(cx).is_open());
13761            assert_eq!(panel.read(cx).position, DockPosition::Bottom);
13762        });
13763
13764        // Dispatch the `MoveFocusedPanelToNextPosition` action again, this time
13765        // around moving the panel to its initial position, the right dock.
13766        cx.dispatch_action(MoveFocusedPanelToNextPosition);
13767        workspace.update(cx, |workspace, cx| {
13768            assert!(workspace.right_dock().read(cx).is_open());
13769            assert_eq!(panel.read(cx).position, DockPosition::Right);
13770        });
13771
13772        // Remove focus from the panel, ensuring that, if the panel is not
13773        // focused, the `MoveFocusedPanelToNextPosition` action does not update
13774        // the panel's position, so the panel is still in the right dock.
13775        workspace.update_in(cx, |workspace, window, cx| {
13776            workspace.toggle_panel_focus::<TestPanel>(window, cx);
13777        });
13778
13779        cx.dispatch_action(MoveFocusedPanelToNextPosition);
13780        workspace.update(cx, |workspace, cx| {
13781            assert!(workspace.right_dock().read(cx).is_open());
13782            assert_eq!(panel.read(cx).position, DockPosition::Right);
13783        });
13784    }
13785
13786    #[gpui::test]
13787    async fn test_moving_items_create_panes(cx: &mut TestAppContext) {
13788        init_test(cx);
13789
13790        let fs = FakeFs::new(cx.executor());
13791        let project = Project::test(fs, [], cx).await;
13792        let (workspace, cx) =
13793            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
13794
13795        let item_1 = cx.new(|cx| {
13796            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
13797        });
13798        workspace.update_in(cx, |workspace, window, cx| {
13799            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
13800            workspace.move_item_to_pane_in_direction(
13801                &MoveItemToPaneInDirection {
13802                    direction: SplitDirection::Right,
13803                    focus: true,
13804                    clone: false,
13805                },
13806                window,
13807                cx,
13808            );
13809            workspace.move_item_to_pane_at_index(
13810                &MoveItemToPane {
13811                    destination: 3,
13812                    focus: true,
13813                    clone: false,
13814                },
13815                window,
13816                cx,
13817            );
13818
13819            assert_eq!(workspace.panes.len(), 1, "No new panes were created");
13820            assert_eq!(
13821                pane_items_paths(&workspace.active_pane, cx),
13822                vec!["first.txt".to_string()],
13823                "Single item was not moved anywhere"
13824            );
13825        });
13826
13827        let item_2 = cx.new(|cx| {
13828            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "second.txt", cx)])
13829        });
13830        workspace.update_in(cx, |workspace, window, cx| {
13831            workspace.add_item_to_active_pane(Box::new(item_2), None, true, window, cx);
13832            assert_eq!(
13833                pane_items_paths(&workspace.panes[0], cx),
13834                vec!["first.txt".to_string(), "second.txt".to_string()],
13835            );
13836            workspace.move_item_to_pane_in_direction(
13837                &MoveItemToPaneInDirection {
13838                    direction: SplitDirection::Right,
13839                    focus: true,
13840                    clone: false,
13841                },
13842                window,
13843                cx,
13844            );
13845
13846            assert_eq!(workspace.panes.len(), 2, "A new pane should be created");
13847            assert_eq!(
13848                pane_items_paths(&workspace.panes[0], cx),
13849                vec!["first.txt".to_string()],
13850                "After moving, one item should be left in the original pane"
13851            );
13852            assert_eq!(
13853                pane_items_paths(&workspace.panes[1], cx),
13854                vec!["second.txt".to_string()],
13855                "New item should have been moved to the new pane"
13856            );
13857        });
13858
13859        let item_3 = cx.new(|cx| {
13860            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "third.txt", cx)])
13861        });
13862        workspace.update_in(cx, |workspace, window, cx| {
13863            let original_pane = workspace.panes[0].clone();
13864            workspace.set_active_pane(&original_pane, window, cx);
13865            workspace.add_item_to_active_pane(Box::new(item_3), None, true, window, cx);
13866            assert_eq!(workspace.panes.len(), 2, "No new panes were created");
13867            assert_eq!(
13868                pane_items_paths(&workspace.active_pane, cx),
13869                vec!["first.txt".to_string(), "third.txt".to_string()],
13870                "New pane should be ready to move one item out"
13871            );
13872
13873            workspace.move_item_to_pane_at_index(
13874                &MoveItemToPane {
13875                    destination: 3,
13876                    focus: true,
13877                    clone: false,
13878                },
13879                window,
13880                cx,
13881            );
13882            assert_eq!(workspace.panes.len(), 3, "A new pane should be created");
13883            assert_eq!(
13884                pane_items_paths(&workspace.active_pane, cx),
13885                vec!["first.txt".to_string()],
13886                "After moving, one item should be left in the original pane"
13887            );
13888            assert_eq!(
13889                pane_items_paths(&workspace.panes[1], cx),
13890                vec!["second.txt".to_string()],
13891                "Previously created pane should be unchanged"
13892            );
13893            assert_eq!(
13894                pane_items_paths(&workspace.panes[2], cx),
13895                vec!["third.txt".to_string()],
13896                "New item should have been moved to the new pane"
13897            );
13898        });
13899    }
13900
13901    #[gpui::test]
13902    async fn test_moving_items_can_clone_panes(cx: &mut TestAppContext) {
13903        init_test(cx);
13904
13905        let fs = FakeFs::new(cx.executor());
13906        let project = Project::test(fs, [], cx).await;
13907        let (workspace, cx) =
13908            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
13909
13910        let item_1 = cx.new(|cx| {
13911            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
13912        });
13913        workspace.update_in(cx, |workspace, window, cx| {
13914            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
13915            workspace.move_item_to_pane_in_direction(
13916                &MoveItemToPaneInDirection {
13917                    direction: SplitDirection::Right,
13918                    focus: true,
13919                    clone: true,
13920                },
13921                window,
13922                cx,
13923            );
13924        });
13925        cx.run_until_parked();
13926        workspace.update_in(cx, |workspace, window, cx| {
13927            workspace.move_item_to_pane_at_index(
13928                &MoveItemToPane {
13929                    destination: 3,
13930                    focus: true,
13931                    clone: true,
13932                },
13933                window,
13934                cx,
13935            );
13936        });
13937        cx.run_until_parked();
13938
13939        workspace.update(cx, |workspace, cx| {
13940            assert_eq!(workspace.panes.len(), 3, "Two new panes were created");
13941            for pane in workspace.panes() {
13942                assert_eq!(
13943                    pane_items_paths(pane, cx),
13944                    vec!["first.txt".to_string()],
13945                    "Single item exists in all panes"
13946                );
13947            }
13948        });
13949
13950        // verify that the active pane has been updated after waiting for the
13951        // pane focus event to fire and resolve
13952        workspace.read_with(cx, |workspace, _app| {
13953            assert_eq!(
13954                workspace.active_pane(),
13955                &workspace.panes[2],
13956                "The third pane should be the active one: {:?}",
13957                workspace.panes
13958            );
13959        })
13960    }
13961
13962    #[gpui::test]
13963    async fn test_close_item_in_all_panes(cx: &mut TestAppContext) {
13964        init_test(cx);
13965
13966        let fs = FakeFs::new(cx.executor());
13967        fs.insert_tree("/root", json!({ "test.txt": "" })).await;
13968
13969        let project = Project::test(fs, ["root".as_ref()], cx).await;
13970        let (workspace, cx) =
13971            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
13972
13973        let pane_a = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13974        // Add item to pane A with project path
13975        let item_a = cx.new(|cx| {
13976            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
13977        });
13978        workspace.update_in(cx, |workspace, window, cx| {
13979            workspace.add_item_to_active_pane(Box::new(item_a.clone()), None, true, window, cx)
13980        });
13981
13982        // Split to create pane B
13983        let pane_b = workspace.update_in(cx, |workspace, window, cx| {
13984            workspace.split_pane(pane_a.clone(), SplitDirection::Right, window, cx)
13985        });
13986
13987        // Add item with SAME project path to pane B, and pin it
13988        let item_b = cx.new(|cx| {
13989            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
13990        });
13991        pane_b.update_in(cx, |pane, window, cx| {
13992            pane.add_item(Box::new(item_b.clone()), true, true, None, window, cx);
13993            pane.set_pinned_count(1);
13994        });
13995
13996        assert_eq!(pane_a.read_with(cx, |pane, _| pane.items_len()), 1);
13997        assert_eq!(pane_b.read_with(cx, |pane, _| pane.items_len()), 1);
13998
13999        // close_pinned: false should only close the unpinned copy
14000        workspace.update_in(cx, |workspace, window, cx| {
14001            workspace.close_item_in_all_panes(
14002                &CloseItemInAllPanes {
14003                    save_intent: Some(SaveIntent::Close),
14004                    close_pinned: false,
14005                },
14006                window,
14007                cx,
14008            )
14009        });
14010        cx.executor().run_until_parked();
14011
14012        let item_count_a = pane_a.read_with(cx, |pane, _| pane.items_len());
14013        let item_count_b = pane_b.read_with(cx, |pane, _| pane.items_len());
14014        assert_eq!(item_count_a, 0, "Unpinned item in pane A should be closed");
14015        assert_eq!(item_count_b, 1, "Pinned item in pane B should remain");
14016
14017        // Split again, seeing as closing the previous item also closed its
14018        // pane, so only pane remains, which does not allow us to properly test
14019        // that both items close when `close_pinned: true`.
14020        let pane_c = workspace.update_in(cx, |workspace, window, cx| {
14021            workspace.split_pane(pane_b.clone(), SplitDirection::Right, window, cx)
14022        });
14023
14024        // Add an item with the same project path to pane C so that
14025        // close_item_in_all_panes can determine what to close across all panes
14026        // (it reads the active item from the active pane, and split_pane
14027        // creates an empty pane).
14028        let item_c = cx.new(|cx| {
14029            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
14030        });
14031        pane_c.update_in(cx, |pane, window, cx| {
14032            pane.add_item(Box::new(item_c.clone()), true, true, None, window, cx);
14033        });
14034
14035        // close_pinned: true should close the pinned copy too
14036        workspace.update_in(cx, |workspace, window, cx| {
14037            let panes_count = workspace.panes().len();
14038            assert_eq!(panes_count, 2, "Workspace should have two panes (B and C)");
14039
14040            workspace.close_item_in_all_panes(
14041                &CloseItemInAllPanes {
14042                    save_intent: Some(SaveIntent::Close),
14043                    close_pinned: true,
14044                },
14045                window,
14046                cx,
14047            )
14048        });
14049        cx.executor().run_until_parked();
14050
14051        let item_count_b = pane_b.read_with(cx, |pane, _| pane.items_len());
14052        let item_count_c = pane_c.read_with(cx, |pane, _| pane.items_len());
14053        assert_eq!(item_count_b, 0, "Pinned item in pane B should be closed");
14054        assert_eq!(item_count_c, 0, "Unpinned item in pane C should be closed");
14055    }
14056
14057    mod register_project_item_tests {
14058
14059        use super::*;
14060
14061        // View
14062        struct TestPngItemView {
14063            focus_handle: FocusHandle,
14064        }
14065        // Model
14066        struct TestPngItem {}
14067
14068        impl project::ProjectItem for TestPngItem {
14069            fn try_open(
14070                _project: &Entity<Project>,
14071                path: &ProjectPath,
14072                cx: &mut App,
14073            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
14074                if path.path.extension().unwrap() == "png" {
14075                    Some(cx.spawn(async move |cx| Ok(cx.new(|_| TestPngItem {}))))
14076                } else {
14077                    None
14078                }
14079            }
14080
14081            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
14082                None
14083            }
14084
14085            fn project_path(&self, _: &App) -> Option<ProjectPath> {
14086                None
14087            }
14088
14089            fn is_dirty(&self) -> bool {
14090                false
14091            }
14092        }
14093
14094        impl Item for TestPngItemView {
14095            type Event = ();
14096            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
14097                "".into()
14098            }
14099        }
14100        impl EventEmitter<()> for TestPngItemView {}
14101        impl Focusable for TestPngItemView {
14102            fn focus_handle(&self, _cx: &App) -> FocusHandle {
14103                self.focus_handle.clone()
14104            }
14105        }
14106
14107        impl Render for TestPngItemView {
14108            fn render(
14109                &mut self,
14110                _window: &mut Window,
14111                _cx: &mut Context<Self>,
14112            ) -> impl IntoElement {
14113                Empty
14114            }
14115        }
14116
14117        impl ProjectItem for TestPngItemView {
14118            type Item = TestPngItem;
14119
14120            fn for_project_item(
14121                _project: Entity<Project>,
14122                _pane: Option<&Pane>,
14123                _item: Entity<Self::Item>,
14124                _: &mut Window,
14125                cx: &mut Context<Self>,
14126            ) -> Self
14127            where
14128                Self: Sized,
14129            {
14130                Self {
14131                    focus_handle: cx.focus_handle(),
14132                }
14133            }
14134        }
14135
14136        // View
14137        struct TestIpynbItemView {
14138            focus_handle: FocusHandle,
14139        }
14140        // Model
14141        struct TestIpynbItem {}
14142
14143        impl project::ProjectItem for TestIpynbItem {
14144            fn try_open(
14145                _project: &Entity<Project>,
14146                path: &ProjectPath,
14147                cx: &mut App,
14148            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
14149                if path.path.extension().unwrap() == "ipynb" {
14150                    Some(cx.spawn(async move |cx| Ok(cx.new(|_| TestIpynbItem {}))))
14151                } else {
14152                    None
14153                }
14154            }
14155
14156            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
14157                None
14158            }
14159
14160            fn project_path(&self, _: &App) -> Option<ProjectPath> {
14161                None
14162            }
14163
14164            fn is_dirty(&self) -> bool {
14165                false
14166            }
14167        }
14168
14169        impl Item for TestIpynbItemView {
14170            type Event = ();
14171            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
14172                "".into()
14173            }
14174        }
14175        impl EventEmitter<()> for TestIpynbItemView {}
14176        impl Focusable for TestIpynbItemView {
14177            fn focus_handle(&self, _cx: &App) -> FocusHandle {
14178                self.focus_handle.clone()
14179            }
14180        }
14181
14182        impl Render for TestIpynbItemView {
14183            fn render(
14184                &mut self,
14185                _window: &mut Window,
14186                _cx: &mut Context<Self>,
14187            ) -> impl IntoElement {
14188                Empty
14189            }
14190        }
14191
14192        impl ProjectItem for TestIpynbItemView {
14193            type Item = TestIpynbItem;
14194
14195            fn for_project_item(
14196                _project: Entity<Project>,
14197                _pane: Option<&Pane>,
14198                _item: Entity<Self::Item>,
14199                _: &mut Window,
14200                cx: &mut Context<Self>,
14201            ) -> Self
14202            where
14203                Self: Sized,
14204            {
14205                Self {
14206                    focus_handle: cx.focus_handle(),
14207                }
14208            }
14209        }
14210
14211        struct TestAlternatePngItemView {
14212            focus_handle: FocusHandle,
14213        }
14214
14215        impl Item for TestAlternatePngItemView {
14216            type Event = ();
14217            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
14218                "".into()
14219            }
14220        }
14221
14222        impl EventEmitter<()> for TestAlternatePngItemView {}
14223        impl Focusable for TestAlternatePngItemView {
14224            fn focus_handle(&self, _cx: &App) -> FocusHandle {
14225                self.focus_handle.clone()
14226            }
14227        }
14228
14229        impl Render for TestAlternatePngItemView {
14230            fn render(
14231                &mut self,
14232                _window: &mut Window,
14233                _cx: &mut Context<Self>,
14234            ) -> impl IntoElement {
14235                Empty
14236            }
14237        }
14238
14239        impl ProjectItem for TestAlternatePngItemView {
14240            type Item = TestPngItem;
14241
14242            fn for_project_item(
14243                _project: Entity<Project>,
14244                _pane: Option<&Pane>,
14245                _item: Entity<Self::Item>,
14246                _: &mut Window,
14247                cx: &mut Context<Self>,
14248            ) -> Self
14249            where
14250                Self: Sized,
14251            {
14252                Self {
14253                    focus_handle: cx.focus_handle(),
14254                }
14255            }
14256        }
14257
14258        #[gpui::test]
14259        async fn test_register_project_item(cx: &mut TestAppContext) {
14260            init_test(cx);
14261
14262            cx.update(|cx| {
14263                register_project_item::<TestPngItemView>(cx);
14264                register_project_item::<TestIpynbItemView>(cx);
14265            });
14266
14267            let fs = FakeFs::new(cx.executor());
14268            fs.insert_tree(
14269                "/root1",
14270                json!({
14271                    "one.png": "BINARYDATAHERE",
14272                    "two.ipynb": "{ totally a notebook }",
14273                    "three.txt": "editing text, sure why not?"
14274                }),
14275            )
14276            .await;
14277
14278            let project = Project::test(fs, ["root1".as_ref()], cx).await;
14279            let (workspace, cx) =
14280                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
14281
14282            let worktree_id = project.update(cx, |project, cx| {
14283                project.worktrees(cx).next().unwrap().read(cx).id()
14284            });
14285
14286            let handle = workspace
14287                .update_in(cx, |workspace, window, cx| {
14288                    let project_path = (worktree_id, rel_path("one.png"));
14289                    workspace.open_path(project_path, None, true, window, cx)
14290                })
14291                .await
14292                .unwrap();
14293
14294            // Now we can check if the handle we got back errored or not
14295            assert_eq!(
14296                handle.to_any_view().entity_type(),
14297                TypeId::of::<TestPngItemView>()
14298            );
14299
14300            let handle = workspace
14301                .update_in(cx, |workspace, window, cx| {
14302                    let project_path = (worktree_id, rel_path("two.ipynb"));
14303                    workspace.open_path(project_path, None, true, window, cx)
14304                })
14305                .await
14306                .unwrap();
14307
14308            assert_eq!(
14309                handle.to_any_view().entity_type(),
14310                TypeId::of::<TestIpynbItemView>()
14311            );
14312
14313            let handle = workspace
14314                .update_in(cx, |workspace, window, cx| {
14315                    let project_path = (worktree_id, rel_path("three.txt"));
14316                    workspace.open_path(project_path, None, true, window, cx)
14317                })
14318                .await;
14319            assert!(handle.is_err());
14320        }
14321
14322        #[gpui::test]
14323        async fn test_register_project_item_two_enter_one_leaves(cx: &mut TestAppContext) {
14324            init_test(cx);
14325
14326            cx.update(|cx| {
14327                register_project_item::<TestPngItemView>(cx);
14328                register_project_item::<TestAlternatePngItemView>(cx);
14329            });
14330
14331            let fs = FakeFs::new(cx.executor());
14332            fs.insert_tree(
14333                "/root1",
14334                json!({
14335                    "one.png": "BINARYDATAHERE",
14336                    "two.ipynb": "{ totally a notebook }",
14337                    "three.txt": "editing text, sure why not?"
14338                }),
14339            )
14340            .await;
14341            let project = Project::test(fs, ["root1".as_ref()], cx).await;
14342            let (workspace, cx) =
14343                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
14344            let worktree_id = project.update(cx, |project, cx| {
14345                project.worktrees(cx).next().unwrap().read(cx).id()
14346            });
14347
14348            let handle = workspace
14349                .update_in(cx, |workspace, window, cx| {
14350                    let project_path = (worktree_id, rel_path("one.png"));
14351                    workspace.open_path(project_path, None, true, window, cx)
14352                })
14353                .await
14354                .unwrap();
14355
14356            // This _must_ be the second item registered
14357            assert_eq!(
14358                handle.to_any_view().entity_type(),
14359                TypeId::of::<TestAlternatePngItemView>()
14360            );
14361
14362            let handle = workspace
14363                .update_in(cx, |workspace, window, cx| {
14364                    let project_path = (worktree_id, rel_path("three.txt"));
14365                    workspace.open_path(project_path, None, true, window, cx)
14366                })
14367                .await;
14368            assert!(handle.is_err());
14369        }
14370    }
14371
14372    #[gpui::test]
14373    async fn test_status_bar_visibility(cx: &mut TestAppContext) {
14374        init_test(cx);
14375
14376        let fs = FakeFs::new(cx.executor());
14377        let project = Project::test(fs, [], cx).await;
14378        let (workspace, _cx) =
14379            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
14380
14381        // Test with status bar shown (default)
14382        workspace.read_with(cx, |workspace, cx| {
14383            let visible = workspace.status_bar_visible(cx);
14384            assert!(visible, "Status bar should be visible by default");
14385        });
14386
14387        // Test with status bar hidden
14388        cx.update_global(|store: &mut SettingsStore, cx| {
14389            store.update_user_settings(cx, |settings| {
14390                settings.status_bar.get_or_insert_default().show = Some(false);
14391            });
14392        });
14393
14394        workspace.read_with(cx, |workspace, cx| {
14395            let visible = workspace.status_bar_visible(cx);
14396            assert!(!visible, "Status bar should be hidden when show is false");
14397        });
14398
14399        // Test with status bar shown explicitly
14400        cx.update_global(|store: &mut SettingsStore, cx| {
14401            store.update_user_settings(cx, |settings| {
14402                settings.status_bar.get_or_insert_default().show = Some(true);
14403            });
14404        });
14405
14406        workspace.read_with(cx, |workspace, cx| {
14407            let visible = workspace.status_bar_visible(cx);
14408            assert!(visible, "Status bar should be visible when show is true");
14409        });
14410    }
14411
14412    #[gpui::test]
14413    async fn test_pane_close_active_item(cx: &mut TestAppContext) {
14414        init_test(cx);
14415
14416        let fs = FakeFs::new(cx.executor());
14417        let project = Project::test(fs, [], cx).await;
14418        let (multi_workspace, cx) =
14419            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
14420        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
14421        let panel = workspace.update_in(cx, |workspace, window, cx| {
14422            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
14423            workspace.add_panel(panel.clone(), window, cx);
14424
14425            workspace
14426                .right_dock()
14427                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
14428
14429            panel
14430        });
14431
14432        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
14433        let item_a = cx.new(TestItem::new);
14434        let item_b = cx.new(TestItem::new);
14435        let item_a_id = item_a.entity_id();
14436        let item_b_id = item_b.entity_id();
14437
14438        pane.update_in(cx, |pane, window, cx| {
14439            pane.add_item(Box::new(item_a.clone()), true, true, None, window, cx);
14440            pane.add_item(Box::new(item_b.clone()), true, true, None, window, cx);
14441        });
14442
14443        pane.read_with(cx, |pane, _| {
14444            assert_eq!(pane.items_len(), 2);
14445            assert_eq!(pane.active_item().unwrap().item_id(), item_b_id);
14446        });
14447
14448        workspace.update_in(cx, |workspace, window, cx| {
14449            workspace.toggle_panel_focus::<TestPanel>(window, cx);
14450        });
14451
14452        workspace.update_in(cx, |_, window, cx| {
14453            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
14454        });
14455
14456        // Assert that the `pane::CloseActiveItem` action is handled at the
14457        // workspace level when one of the dock panels is focused and, in that
14458        // case, the center pane's active item is closed but the focus is not
14459        // moved.
14460        cx.dispatch_action(pane::CloseActiveItem::default());
14461        cx.run_until_parked();
14462
14463        pane.read_with(cx, |pane, _| {
14464            assert_eq!(pane.items_len(), 1);
14465            assert_eq!(pane.active_item().unwrap().item_id(), item_a_id);
14466        });
14467
14468        workspace.update_in(cx, |workspace, window, cx| {
14469            assert!(workspace.right_dock().read(cx).is_open());
14470            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
14471        });
14472    }
14473
14474    #[gpui::test]
14475    async fn test_panel_zoom_preserved_across_workspace_switch(cx: &mut TestAppContext) {
14476        init_test(cx);
14477        let fs = FakeFs::new(cx.executor());
14478
14479        let project_a = Project::test(fs.clone(), [], cx).await;
14480        let project_b = Project::test(fs, [], cx).await;
14481
14482        let multi_workspace_handle =
14483            cx.add_window(|window, cx| MultiWorkspace::test_new(project_a.clone(), window, cx));
14484        cx.run_until_parked();
14485
14486        let workspace_a = multi_workspace_handle
14487            .read_with(cx, |mw, _| mw.workspace().clone())
14488            .unwrap();
14489
14490        let _workspace_b = multi_workspace_handle
14491            .update(cx, |mw, window, cx| {
14492                mw.test_add_workspace(project_b, window, cx)
14493            })
14494            .unwrap();
14495
14496        // Switch to workspace A
14497        multi_workspace_handle
14498            .update(cx, |mw, window, cx| {
14499                let workspace = mw.workspaces()[0].clone();
14500                mw.activate(workspace, window, cx);
14501            })
14502            .unwrap();
14503
14504        let cx = &mut VisualTestContext::from_window(multi_workspace_handle.into(), cx);
14505
14506        // Add a panel to workspace A's right dock and open the dock
14507        let panel = workspace_a.update_in(cx, |workspace, window, cx| {
14508            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
14509            workspace.add_panel(panel.clone(), window, cx);
14510            workspace
14511                .right_dock()
14512                .update(cx, |dock, cx| dock.set_open(true, window, cx));
14513            panel
14514        });
14515
14516        // Focus the panel through the workspace (matching existing test pattern)
14517        workspace_a.update_in(cx, |workspace, window, cx| {
14518            workspace.toggle_panel_focus::<TestPanel>(window, cx);
14519        });
14520
14521        // Zoom the panel
14522        panel.update_in(cx, |panel, window, cx| {
14523            panel.set_zoomed(true, window, cx);
14524        });
14525
14526        // Verify the panel is zoomed and the dock is open
14527        workspace_a.update_in(cx, |workspace, window, cx| {
14528            assert!(
14529                workspace.right_dock().read(cx).is_open(),
14530                "dock should be open before switch"
14531            );
14532            assert!(
14533                panel.is_zoomed(window, cx),
14534                "panel should be zoomed before switch"
14535            );
14536            assert!(
14537                panel.read(cx).focus_handle(cx).contains_focused(window, cx),
14538                "panel should be focused before switch"
14539            );
14540        });
14541
14542        // Switch to workspace B
14543        multi_workspace_handle
14544            .update(cx, |mw, window, cx| {
14545                let workspace = mw.workspaces()[1].clone();
14546                mw.activate(workspace, window, cx);
14547            })
14548            .unwrap();
14549        cx.run_until_parked();
14550
14551        // Switch back to workspace A
14552        multi_workspace_handle
14553            .update(cx, |mw, window, cx| {
14554                let workspace = mw.workspaces()[0].clone();
14555                mw.activate(workspace, window, cx);
14556            })
14557            .unwrap();
14558        cx.run_until_parked();
14559
14560        // Verify the panel is still zoomed and the dock is still open
14561        workspace_a.update_in(cx, |workspace, window, cx| {
14562            assert!(
14563                workspace.right_dock().read(cx).is_open(),
14564                "dock should still be open after switching back"
14565            );
14566            assert!(
14567                panel.is_zoomed(window, cx),
14568                "panel should still be zoomed after switching back"
14569            );
14570        });
14571    }
14572
14573    fn pane_items_paths(pane: &Entity<Pane>, cx: &App) -> Vec<String> {
14574        pane.read(cx)
14575            .items()
14576            .flat_map(|item| {
14577                item.project_paths(cx)
14578                    .into_iter()
14579                    .map(|path| path.path.display(PathStyle::local()).into_owned())
14580            })
14581            .collect()
14582    }
14583
14584    pub fn init_test(cx: &mut TestAppContext) {
14585        cx.update(|cx| {
14586            let settings_store = SettingsStore::test(cx);
14587            cx.set_global(settings_store);
14588            cx.set_global(db::AppDatabase::test_new());
14589            theme_settings::init(theme::LoadThemes::JustBase, cx);
14590        });
14591    }
14592
14593    #[gpui::test]
14594    async fn test_toggle_theme_mode_persists_and_updates_active_theme(cx: &mut TestAppContext) {
14595        use settings::{ThemeName, ThemeSelection};
14596        use theme::SystemAppearance;
14597        use zed_actions::theme::ToggleMode;
14598
14599        init_test(cx);
14600
14601        let fs = FakeFs::new(cx.executor());
14602        let settings_fs: Arc<dyn fs::Fs> = fs.clone();
14603
14604        fs.insert_tree(path!("/root"), json!({ "file.rs": "fn main() {}\n" }))
14605            .await;
14606
14607        // Build a test project and workspace view so the test can invoke
14608        // the workspace action handler the same way the UI would.
14609        let project = Project::test(fs.clone(), [path!("/root").as_ref()], cx).await;
14610        let (workspace, cx) =
14611            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
14612
14613        // Seed the settings file with a plain static light theme so the
14614        // first toggle always starts from a known persisted state.
14615        workspace.update_in(cx, |_workspace, _window, cx| {
14616            *SystemAppearance::global_mut(cx) = SystemAppearance(theme::Appearance::Light);
14617            settings::update_settings_file(settings_fs.clone(), cx, |settings, _cx| {
14618                settings.theme.theme = Some(ThemeSelection::Static(ThemeName("One Light".into())));
14619            });
14620        });
14621        cx.executor().advance_clock(Duration::from_millis(200));
14622        cx.run_until_parked();
14623
14624        // Confirm the initial persisted settings contain the static theme
14625        // we just wrote before any toggling happens.
14626        let settings_text = SettingsStore::load_settings(&settings_fs).await.unwrap();
14627        assert!(settings_text.contains(r#""theme": "One Light""#));
14628
14629        // Toggle once. This should migrate the persisted theme settings
14630        // into light/dark slots and enable system mode.
14631        workspace.update_in(cx, |workspace, window, cx| {
14632            workspace.toggle_theme_mode(&ToggleMode, window, cx);
14633        });
14634        cx.executor().advance_clock(Duration::from_millis(200));
14635        cx.run_until_parked();
14636
14637        // 1. Static -> Dynamic
14638        // this assertion checks theme changed from static to dynamic.
14639        let settings_text = SettingsStore::load_settings(&settings_fs).await.unwrap();
14640        let parsed: serde_json::Value = settings::parse_json_with_comments(&settings_text).unwrap();
14641        assert_eq!(
14642            parsed["theme"],
14643            serde_json::json!({
14644                "mode": "system",
14645                "light": "One Light",
14646                "dark": "One Dark"
14647            })
14648        );
14649
14650        // 2. Toggle again, suppose it will change the mode to light
14651        workspace.update_in(cx, |workspace, window, cx| {
14652            workspace.toggle_theme_mode(&ToggleMode, window, cx);
14653        });
14654        cx.executor().advance_clock(Duration::from_millis(200));
14655        cx.run_until_parked();
14656
14657        let settings_text = SettingsStore::load_settings(&settings_fs).await.unwrap();
14658        assert!(settings_text.contains(r#""mode": "light""#));
14659    }
14660
14661    fn dirty_project_item(id: u64, path: &str, cx: &mut App) -> Entity<TestProjectItem> {
14662        let item = TestProjectItem::new(id, path, cx);
14663        item.update(cx, |item, _| {
14664            item.is_dirty = true;
14665        });
14666        item
14667    }
14668
14669    #[gpui::test]
14670    async fn test_zoomed_panel_without_pane_preserved_on_center_focus(
14671        cx: &mut gpui::TestAppContext,
14672    ) {
14673        init_test(cx);
14674        let fs = FakeFs::new(cx.executor());
14675
14676        let project = Project::test(fs, [], cx).await;
14677        let (workspace, cx) =
14678            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
14679
14680        let panel = workspace.update_in(cx, |workspace, window, cx| {
14681            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
14682            workspace.add_panel(panel.clone(), window, cx);
14683            workspace
14684                .right_dock()
14685                .update(cx, |dock, cx| dock.set_open(true, window, cx));
14686            panel
14687        });
14688
14689        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
14690        pane.update_in(cx, |pane, window, cx| {
14691            let item = cx.new(TestItem::new);
14692            pane.add_item(Box::new(item), true, true, None, window, cx);
14693        });
14694
14695        // Transfer focus to the panel, then zoom it. Using toggle_panel_focus
14696        // mirrors the real-world flow and avoids side effects from directly
14697        // focusing the panel while the center pane is active.
14698        workspace.update_in(cx, |workspace, window, cx| {
14699            workspace.toggle_panel_focus::<TestPanel>(window, cx);
14700        });
14701
14702        panel.update_in(cx, |panel, window, cx| {
14703            panel.set_zoomed(true, window, cx);
14704        });
14705
14706        workspace.update_in(cx, |workspace, window, cx| {
14707            assert!(workspace.right_dock().read(cx).is_open());
14708            assert!(panel.is_zoomed(window, cx));
14709            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
14710        });
14711
14712        // Simulate a spurious pane::Event::Focus on the center pane while the
14713        // panel still has focus. This mirrors what happens during macOS window
14714        // activation: the center pane fires a focus event even though actual
14715        // focus remains on the dock panel.
14716        pane.update_in(cx, |_, _, cx| {
14717            cx.emit(pane::Event::Focus);
14718        });
14719
14720        // The dock must remain open because the panel had focus at the time the
14721        // event was processed. Before the fix, dock_to_preserve was None for
14722        // panels that don't implement pane(), causing the dock to close.
14723        workspace.update_in(cx, |workspace, window, cx| {
14724            assert!(
14725                workspace.right_dock().read(cx).is_open(),
14726                "Dock should stay open when its zoomed panel (without pane()) still has focus"
14727            );
14728            assert!(panel.is_zoomed(window, cx));
14729        });
14730    }
14731
14732    #[gpui::test]
14733    async fn test_panels_stay_open_after_position_change_and_settings_update(
14734        cx: &mut gpui::TestAppContext,
14735    ) {
14736        init_test(cx);
14737        let fs = FakeFs::new(cx.executor());
14738        let project = Project::test(fs, [], cx).await;
14739        let (workspace, cx) =
14740            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
14741
14742        // Add two panels to the left dock and open it.
14743        let (panel_a, panel_b) = workspace.update_in(cx, |workspace, window, cx| {
14744            let panel_a = cx.new(|cx| TestPanel::new(DockPosition::Left, 100, cx));
14745            let panel_b = cx.new(|cx| TestPanel::new(DockPosition::Left, 101, cx));
14746            workspace.add_panel(panel_a.clone(), window, cx);
14747            workspace.add_panel(panel_b.clone(), window, cx);
14748            workspace.left_dock().update(cx, |dock, cx| {
14749                dock.set_open(true, window, cx);
14750                dock.activate_panel(0, window, cx);
14751            });
14752            (panel_a, panel_b)
14753        });
14754
14755        workspace.update_in(cx, |workspace, _, cx| {
14756            assert!(workspace.left_dock().read(cx).is_open());
14757        });
14758
14759        // Simulate a feature flag changing default dock positions: both panels
14760        // move from Left to Right.
14761        workspace.update_in(cx, |_workspace, _window, cx| {
14762            panel_a.update(cx, |p, _cx| p.position = DockPosition::Right);
14763            panel_b.update(cx, |p, _cx| p.position = DockPosition::Right);
14764            cx.update_global::<SettingsStore, _>(|_, _| {});
14765        });
14766
14767        // Both panels should now be in the right dock.
14768        workspace.update_in(cx, |workspace, _, cx| {
14769            let right_dock = workspace.right_dock().read(cx);
14770            assert_eq!(right_dock.panels_len(), 2);
14771        });
14772
14773        // Open the right dock and activate panel_b (simulating the user
14774        // opening the panel after it moved).
14775        workspace.update_in(cx, |workspace, window, cx| {
14776            workspace.right_dock().update(cx, |dock, cx| {
14777                dock.set_open(true, window, cx);
14778                dock.activate_panel(1, window, cx);
14779            });
14780        });
14781
14782        // Now trigger another SettingsStore change
14783        workspace.update_in(cx, |_workspace, _window, cx| {
14784            cx.update_global::<SettingsStore, _>(|_, _| {});
14785        });
14786
14787        workspace.update_in(cx, |workspace, _, cx| {
14788            assert!(
14789                workspace.right_dock().read(cx).is_open(),
14790                "Right dock should still be open after a settings change"
14791            );
14792            assert_eq!(
14793                workspace.right_dock().read(cx).panels_len(),
14794                2,
14795                "Both panels should still be in the right dock"
14796            );
14797        });
14798    }
14799}