workspace.rs

    1pub mod dock;
    2pub mod history_manager;
    3pub mod invalid_item_view;
    4pub mod item;
    5mod modal_layer;
    6mod multi_workspace;
    7pub mod notifications;
    8pub mod pane;
    9pub mod pane_group;
   10pub mod path_list {
   11    pub use util::path_list::{PathList, SerializedPathList};
   12}
   13mod persistence;
   14pub mod searchable;
   15mod security_modal;
   16pub mod shared_screen;
   17use db::smol::future::yield_now;
   18pub use shared_screen::SharedScreen;
   19mod status_bar;
   20pub mod tasks;
   21mod theme_preview;
   22mod toast_layer;
   23mod toolbar;
   24pub mod welcome;
   25mod workspace_settings;
   26
   27pub use crate::notifications::NotificationFrame;
   28pub use dock::Panel;
   29pub use multi_workspace::{
   30    CloseWorkspaceSidebar, DraggedSidebar, FocusWorkspaceSidebar, MultiWorkspace,
   31    MultiWorkspaceEvent, NextWorkspace, PreviousWorkspace, Sidebar, SidebarHandle,
   32    SidebarRenderState, SidebarSide, ToggleWorkspaceSidebar, sidebar_side_context_menu,
   33};
   34pub use path_list::{PathList, SerializedPathList};
   35pub use toast_layer::{ToastAction, ToastLayer, ToastView};
   36
   37use anyhow::{Context as _, Result, anyhow};
   38use client::{
   39    ChannelId, Client, ErrorExt, ParticipantIndex, Status, TypedEnvelope, User, UserStore,
   40    proto::{self, ErrorCode, PanelId, PeerId},
   41};
   42use collections::{HashMap, HashSet, hash_map};
   43use dock::{Dock, DockPosition, PanelButtons, PanelHandle, RESIZE_HANDLE_SIZE};
   44use fs::Fs;
   45use futures::{
   46    Future, FutureExt, StreamExt,
   47    channel::{
   48        mpsc::{self, UnboundedReceiver, UnboundedSender},
   49        oneshot,
   50    },
   51    future::{Shared, try_join_all},
   52};
   53use gpui::{
   54    Action, AnyEntity, AnyView, AnyWeakView, App, AsyncApp, AsyncWindowContext, Axis, Bounds,
   55    Context, CursorStyle, Decorations, DragMoveEvent, Entity, EntityId, EventEmitter, FocusHandle,
   56    Focusable, Global, HitboxBehavior, Hsla, KeyContext, Keystroke, ManagedView, MouseButton,
   57    PathPromptOptions, Point, PromptLevel, Render, ResizeEdge, Size, Stateful, Subscription,
   58    SystemWindowTabController, Task, Tiling, WeakEntity, WindowBounds, WindowHandle, WindowId,
   59    WindowOptions, actions, canvas, point, relative, size, transparent_black,
   60};
   61pub use history_manager::*;
   62pub use item::{
   63    FollowableItem, FollowableItemHandle, Item, ItemHandle, ItemSettings, PreviewTabsSettings,
   64    ProjectItem, SerializableItem, SerializableItemHandle, WeakItemHandle,
   65};
   66use itertools::Itertools;
   67use language::{Buffer, LanguageRegistry, Rope, language_settings::all_language_settings};
   68pub use modal_layer::*;
   69use node_runtime::NodeRuntime;
   70use notifications::{
   71    DetachAndPromptErr, Notifications, dismiss_app_notification,
   72    simple_message_notification::MessageNotification,
   73};
   74pub use pane::*;
   75pub use pane_group::{
   76    ActivePaneDecorator, HANDLE_HITBOX_SIZE, Member, PaneAxis, PaneGroup, PaneRenderContext,
   77    SplitDirection,
   78};
   79use persistence::{SerializedWindowBounds, model::SerializedWorkspace};
   80pub use persistence::{
   81    WorkspaceDb, delete_unloaded_items,
   82    model::{
   83        DockStructure, ItemId, SerializedMultiWorkspace, SerializedWorkspaceLocation,
   84        SessionWorkspace,
   85    },
   86    read_serialized_multi_workspaces, resolve_worktree_workspaces,
   87};
   88use postage::stream::Stream;
   89use project::{
   90    DirectoryLister, Project, ProjectEntryId, ProjectPath, ResolvedPath, Worktree, WorktreeId,
   91    WorktreeSettings,
   92    debugger::{breakpoint_store::BreakpointStoreEvent, session::ThreadStatus},
   93    project_settings::ProjectSettings,
   94    toolchain_store::ToolchainStoreEvent,
   95    trusted_worktrees::{RemoteHostLocation, TrustedWorktrees, TrustedWorktreesEvent},
   96};
   97use remote::{
   98    RemoteClientDelegate, RemoteConnection, RemoteConnectionOptions,
   99    remote_client::ConnectionIdentifier,
  100};
  101use schemars::JsonSchema;
  102use serde::Deserialize;
  103use session::AppSession;
  104use settings::{
  105    CenteredPaddingSettings, Settings, SettingsLocation, SettingsStore, update_settings_file,
  106};
  107
  108use sqlez::{
  109    bindable::{Bind, Column, StaticColumnCount},
  110    statement::Statement,
  111};
  112use status_bar::StatusBar;
  113pub use status_bar::StatusItemView;
  114use std::{
  115    any::TypeId,
  116    borrow::Cow,
  117    cell::RefCell,
  118    cmp,
  119    collections::VecDeque,
  120    env,
  121    hash::Hash,
  122    path::{Path, PathBuf},
  123    process::ExitStatus,
  124    rc::Rc,
  125    sync::{
  126        Arc, LazyLock, Weak,
  127        atomic::{AtomicBool, AtomicUsize},
  128    },
  129    time::Duration,
  130};
  131use task::{DebugScenario, SharedTaskContext, SpawnInTerminal};
  132use theme::{ActiveTheme, GlobalTheme, SystemAppearance, ThemeSettings};
  133pub use toolbar::{
  134    PaneSearchBarCallbacks, Toolbar, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView,
  135};
  136pub use ui;
  137use ui::{Window, prelude::*};
  138use util::{
  139    ResultExt, TryFutureExt,
  140    paths::{PathStyle, SanitizedPath},
  141    rel_path::RelPath,
  142    serde::default_true,
  143};
  144use uuid::Uuid;
  145pub use workspace_settings::{
  146    AutosaveSetting, BottomDockLayout, RestoreOnStartupBehavior, StatusBarSettings, TabBarSettings,
  147    WorkspaceSettings,
  148};
  149use zed_actions::{Spawn, feedback::FileBugReport, theme::ToggleMode};
  150
  151use crate::{item::ItemBufferKind, notifications::NotificationId};
  152use crate::{
  153    persistence::{
  154        SerializedAxis,
  155        model::{DockData, SerializedItem, SerializedPane, SerializedPaneGroup},
  156    },
  157    security_modal::SecurityModal,
  158};
  159
  160pub const SERIALIZATION_THROTTLE_TIME: Duration = Duration::from_millis(200);
  161
  162static ZED_WINDOW_SIZE: LazyLock<Option<Size<Pixels>>> = LazyLock::new(|| {
  163    env::var("ZED_WINDOW_SIZE")
  164        .ok()
  165        .as_deref()
  166        .and_then(parse_pixel_size_env_var)
  167});
  168
  169static ZED_WINDOW_POSITION: LazyLock<Option<Point<Pixels>>> = LazyLock::new(|| {
  170    env::var("ZED_WINDOW_POSITION")
  171        .ok()
  172        .as_deref()
  173        .and_then(parse_pixel_position_env_var)
  174});
  175
  176pub trait TerminalProvider {
  177    fn spawn(
  178        &self,
  179        task: SpawnInTerminal,
  180        window: &mut Window,
  181        cx: &mut App,
  182    ) -> Task<Option<Result<ExitStatus>>>;
  183}
  184
  185pub trait DebuggerProvider {
  186    // `active_buffer` is used to resolve build task's name against language-specific tasks.
  187    fn start_session(
  188        &self,
  189        definition: DebugScenario,
  190        task_context: SharedTaskContext,
  191        active_buffer: Option<Entity<Buffer>>,
  192        worktree_id: Option<WorktreeId>,
  193        window: &mut Window,
  194        cx: &mut App,
  195    );
  196
  197    fn spawn_task_or_modal(
  198        &self,
  199        workspace: &mut Workspace,
  200        action: &Spawn,
  201        window: &mut Window,
  202        cx: &mut Context<Workspace>,
  203    );
  204
  205    fn task_scheduled(&self, cx: &mut App);
  206    fn debug_scenario_scheduled(&self, cx: &mut App);
  207    fn debug_scenario_scheduled_last(&self, cx: &App) -> bool;
  208
  209    fn active_thread_state(&self, cx: &App) -> Option<ThreadStatus>;
  210}
  211
  212/// Opens a file or directory.
  213#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  214#[action(namespace = workspace)]
  215pub struct Open {
  216    /// When true, opens in a new window. When false, adds to the current
  217    /// window as a new workspace (multi-workspace).
  218    #[serde(default = "Open::default_create_new_window")]
  219    pub create_new_window: bool,
  220}
  221
  222impl Open {
  223    pub const DEFAULT: Self = Self {
  224        create_new_window: true,
  225    };
  226
  227    /// Used by `#[serde(default)]` on the `create_new_window` field so that
  228    /// the serde default and `Open::DEFAULT` stay in sync.
  229    fn default_create_new_window() -> bool {
  230        Self::DEFAULT.create_new_window
  231    }
  232}
  233
  234impl Default for Open {
  235    fn default() -> Self {
  236        Self::DEFAULT
  237    }
  238}
  239
  240actions!(
  241    workspace,
  242    [
  243        /// Activates the next pane in the workspace.
  244        ActivateNextPane,
  245        /// Activates the previous pane in the workspace.
  246        ActivatePreviousPane,
  247        /// Activates the last pane in the workspace.
  248        ActivateLastPane,
  249        /// Switches to the next window.
  250        ActivateNextWindow,
  251        /// Switches to the previous window.
  252        ActivatePreviousWindow,
  253        /// Adds a folder to the current project.
  254        AddFolderToProject,
  255        /// Clears all notifications.
  256        ClearAllNotifications,
  257        /// Clears all navigation history, including forward/backward navigation, recently opened files, and recently closed tabs. **This action is irreversible**.
  258        ClearNavigationHistory,
  259        /// Closes the active dock.
  260        CloseActiveDock,
  261        /// Closes all docks.
  262        CloseAllDocks,
  263        /// Toggles all docks.
  264        ToggleAllDocks,
  265        /// Closes the current window.
  266        CloseWindow,
  267        /// Closes the current project.
  268        CloseProject,
  269        /// Opens the feedback dialog.
  270        Feedback,
  271        /// Follows the next collaborator in the session.
  272        FollowNextCollaborator,
  273        /// Moves the focused panel to the next position.
  274        MoveFocusedPanelToNextPosition,
  275        /// Creates a new file.
  276        NewFile,
  277        /// Creates a new file in a vertical split.
  278        NewFileSplitVertical,
  279        /// Creates a new file in a horizontal split.
  280        NewFileSplitHorizontal,
  281        /// Opens a new search.
  282        NewSearch,
  283        /// Opens a new window.
  284        NewWindow,
  285        /// Opens multiple files.
  286        OpenFiles,
  287        /// Opens the current location in terminal.
  288        OpenInTerminal,
  289        /// Opens the component preview.
  290        OpenComponentPreview,
  291        /// Reloads the active item.
  292        ReloadActiveItem,
  293        /// Resets the active dock to its default size.
  294        ResetActiveDockSize,
  295        /// Resets all open docks to their default sizes.
  296        ResetOpenDocksSize,
  297        /// Reloads the application
  298        Reload,
  299        /// Saves the current file with a new name.
  300        SaveAs,
  301        /// Saves without formatting.
  302        SaveWithoutFormat,
  303        /// Shuts down all debug adapters.
  304        ShutdownDebugAdapters,
  305        /// Suppresses the current notification.
  306        SuppressNotification,
  307        /// Toggles the bottom dock.
  308        ToggleBottomDock,
  309        /// Toggles centered layout mode.
  310        ToggleCenteredLayout,
  311        /// Toggles edit prediction feature globally for all files.
  312        ToggleEditPrediction,
  313        /// Toggles the left dock.
  314        ToggleLeftDock,
  315        /// Toggles the right dock.
  316        ToggleRightDock,
  317        /// Toggles zoom on the active pane.
  318        ToggleZoom,
  319        /// Toggles read-only mode for the active item (if supported by that item).
  320        ToggleReadOnlyFile,
  321        /// Zooms in on the active pane.
  322        ZoomIn,
  323        /// Zooms out of the active pane.
  324        ZoomOut,
  325        /// If any worktrees are in restricted mode, shows a modal with possible actions.
  326        /// If the modal is shown already, closes it without trusting any worktree.
  327        ToggleWorktreeSecurity,
  328        /// Clears all trusted worktrees, placing them in restricted mode on next open.
  329        /// Requires restart to take effect on already opened projects.
  330        ClearTrustedWorktrees,
  331        /// Stops following a collaborator.
  332        Unfollow,
  333        /// Restores the banner.
  334        RestoreBanner,
  335        /// Toggles expansion of the selected item.
  336        ToggleExpandItem,
  337    ]
  338);
  339
  340/// Activates a specific pane by its index.
  341#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  342#[action(namespace = workspace)]
  343pub struct ActivatePane(pub usize);
  344
  345/// Moves an item to a specific pane by index.
  346#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  347#[action(namespace = workspace)]
  348#[serde(deny_unknown_fields)]
  349pub struct MoveItemToPane {
  350    #[serde(default = "default_1")]
  351    pub destination: usize,
  352    #[serde(default = "default_true")]
  353    pub focus: bool,
  354    #[serde(default)]
  355    pub clone: bool,
  356}
  357
  358fn default_1() -> usize {
  359    1
  360}
  361
  362/// Moves an item to a pane in the specified direction.
  363#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  364#[action(namespace = workspace)]
  365#[serde(deny_unknown_fields)]
  366pub struct MoveItemToPaneInDirection {
  367    #[serde(default = "default_right")]
  368    pub direction: SplitDirection,
  369    #[serde(default = "default_true")]
  370    pub focus: bool,
  371    #[serde(default)]
  372    pub clone: bool,
  373}
  374
  375/// Creates a new file in a split of the desired direction.
  376#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  377#[action(namespace = workspace)]
  378#[serde(deny_unknown_fields)]
  379pub struct NewFileSplit(pub SplitDirection);
  380
  381fn default_right() -> SplitDirection {
  382    SplitDirection::Right
  383}
  384
  385/// Saves all open files in the workspace.
  386#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  387#[action(namespace = workspace)]
  388#[serde(deny_unknown_fields)]
  389pub struct SaveAll {
  390    #[serde(default)]
  391    pub save_intent: Option<SaveIntent>,
  392}
  393
  394/// Saves the current file with the specified options.
  395#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  396#[action(namespace = workspace)]
  397#[serde(deny_unknown_fields)]
  398pub struct Save {
  399    #[serde(default)]
  400    pub save_intent: Option<SaveIntent>,
  401}
  402
  403/// Moves Focus to the central panes in the workspace.
  404#[derive(Clone, Debug, PartialEq, Eq, Action)]
  405#[action(namespace = workspace)]
  406pub struct FocusCenterPane;
  407
  408///  Closes all items and panes in the workspace.
  409#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  410#[action(namespace = workspace)]
  411#[serde(deny_unknown_fields)]
  412pub struct CloseAllItemsAndPanes {
  413    #[serde(default)]
  414    pub save_intent: Option<SaveIntent>,
  415}
  416
  417/// Closes all inactive tabs and panes in the workspace.
  418#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  419#[action(namespace = workspace)]
  420#[serde(deny_unknown_fields)]
  421pub struct CloseInactiveTabsAndPanes {
  422    #[serde(default)]
  423    pub save_intent: Option<SaveIntent>,
  424}
  425
  426/// Closes the active item across all panes.
  427#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  428#[action(namespace = workspace)]
  429#[serde(deny_unknown_fields)]
  430pub struct CloseItemInAllPanes {
  431    #[serde(default)]
  432    pub save_intent: Option<SaveIntent>,
  433    #[serde(default)]
  434    pub close_pinned: bool,
  435}
  436
  437/// Sends a sequence of keystrokes to the active element.
  438#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  439#[action(namespace = workspace)]
  440pub struct SendKeystrokes(pub String);
  441
  442actions!(
  443    project_symbols,
  444    [
  445        /// Toggles the project symbols search.
  446        #[action(name = "Toggle")]
  447        ToggleProjectSymbols
  448    ]
  449);
  450
  451/// Toggles the file finder interface.
  452#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  453#[action(namespace = file_finder, name = "Toggle")]
  454#[serde(deny_unknown_fields)]
  455pub struct ToggleFileFinder {
  456    #[serde(default)]
  457    pub separate_history: bool,
  458}
  459
  460/// Opens a new terminal in the center.
  461#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  462#[action(namespace = workspace)]
  463#[serde(deny_unknown_fields)]
  464pub struct NewCenterTerminal {
  465    /// If true, creates a local terminal even in remote projects.
  466    #[serde(default)]
  467    pub local: bool,
  468}
  469
  470/// Opens a new terminal.
  471#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  472#[action(namespace = workspace)]
  473#[serde(deny_unknown_fields)]
  474pub struct NewTerminal {
  475    /// If true, creates a local terminal even in remote projects.
  476    #[serde(default)]
  477    pub local: bool,
  478}
  479
  480/// Increases size of a currently focused dock by a given amount of pixels.
  481#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  482#[action(namespace = workspace)]
  483#[serde(deny_unknown_fields)]
  484pub struct IncreaseActiveDockSize {
  485    /// For 0px parameter, uses UI font size value.
  486    #[serde(default)]
  487    pub px: u32,
  488}
  489
  490/// Decreases size of a currently focused dock by a given amount of pixels.
  491#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  492#[action(namespace = workspace)]
  493#[serde(deny_unknown_fields)]
  494pub struct DecreaseActiveDockSize {
  495    /// For 0px parameter, uses UI font size value.
  496    #[serde(default)]
  497    pub px: u32,
  498}
  499
  500/// Increases size of all currently visible docks uniformly, by a given amount of pixels.
  501#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  502#[action(namespace = workspace)]
  503#[serde(deny_unknown_fields)]
  504pub struct IncreaseOpenDocksSize {
  505    /// For 0px parameter, uses UI font size value.
  506    #[serde(default)]
  507    pub px: u32,
  508}
  509
  510/// Decreases size of all currently visible docks uniformly, by a given amount of pixels.
  511#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  512#[action(namespace = workspace)]
  513#[serde(deny_unknown_fields)]
  514pub struct DecreaseOpenDocksSize {
  515    /// For 0px parameter, uses UI font size value.
  516    #[serde(default)]
  517    pub px: u32,
  518}
  519
  520actions!(
  521    workspace,
  522    [
  523        /// Activates the pane to the left.
  524        ActivatePaneLeft,
  525        /// Activates the pane to the right.
  526        ActivatePaneRight,
  527        /// Activates the pane above.
  528        ActivatePaneUp,
  529        /// Activates the pane below.
  530        ActivatePaneDown,
  531        /// Swaps the current pane with the one to the left.
  532        SwapPaneLeft,
  533        /// Swaps the current pane with the one to the right.
  534        SwapPaneRight,
  535        /// Swaps the current pane with the one above.
  536        SwapPaneUp,
  537        /// Swaps the current pane with the one below.
  538        SwapPaneDown,
  539        // Swaps the current pane with the first available adjacent pane (searching in order: below, above, right, left) and activates that pane.
  540        SwapPaneAdjacent,
  541        /// Move the current pane to be at the far left.
  542        MovePaneLeft,
  543        /// Move the current pane to be at the far right.
  544        MovePaneRight,
  545        /// Move the current pane to be at the very top.
  546        MovePaneUp,
  547        /// Move the current pane to be at the very bottom.
  548        MovePaneDown,
  549    ]
  550);
  551
  552#[derive(PartialEq, Eq, Debug)]
  553pub enum CloseIntent {
  554    /// Quit the program entirely.
  555    Quit,
  556    /// Close a window.
  557    CloseWindow,
  558    /// Replace the workspace in an existing window.
  559    ReplaceWindow,
  560}
  561
  562#[derive(Clone)]
  563pub struct Toast {
  564    id: NotificationId,
  565    msg: Cow<'static, str>,
  566    autohide: bool,
  567    on_click: Option<(Cow<'static, str>, Arc<dyn Fn(&mut Window, &mut App)>)>,
  568}
  569
  570impl Toast {
  571    pub fn new<I: Into<Cow<'static, str>>>(id: NotificationId, msg: I) -> Self {
  572        Toast {
  573            id,
  574            msg: msg.into(),
  575            on_click: None,
  576            autohide: false,
  577        }
  578    }
  579
  580    pub fn on_click<F, M>(mut self, message: M, on_click: F) -> Self
  581    where
  582        M: Into<Cow<'static, str>>,
  583        F: Fn(&mut Window, &mut App) + 'static,
  584    {
  585        self.on_click = Some((message.into(), Arc::new(on_click)));
  586        self
  587    }
  588
  589    pub fn autohide(mut self) -> Self {
  590        self.autohide = true;
  591        self
  592    }
  593}
  594
  595impl PartialEq for Toast {
  596    fn eq(&self, other: &Self) -> bool {
  597        self.id == other.id
  598            && self.msg == other.msg
  599            && self.on_click.is_some() == other.on_click.is_some()
  600    }
  601}
  602
  603/// Opens a new terminal with the specified working directory.
  604#[derive(Debug, Default, Clone, Deserialize, PartialEq, JsonSchema, Action)]
  605#[action(namespace = workspace)]
  606#[serde(deny_unknown_fields)]
  607pub struct OpenTerminal {
  608    pub working_directory: PathBuf,
  609    /// If true, creates a local terminal even in remote projects.
  610    #[serde(default)]
  611    pub local: bool,
  612}
  613
  614#[derive(
  615    Clone,
  616    Copy,
  617    Debug,
  618    Default,
  619    Hash,
  620    PartialEq,
  621    Eq,
  622    PartialOrd,
  623    Ord,
  624    serde::Serialize,
  625    serde::Deserialize,
  626)]
  627pub struct WorkspaceId(i64);
  628
  629impl WorkspaceId {
  630    pub fn from_i64(value: i64) -> Self {
  631        Self(value)
  632    }
  633}
  634
  635impl StaticColumnCount for WorkspaceId {}
  636impl Bind for WorkspaceId {
  637    fn bind(&self, statement: &Statement, start_index: i32) -> Result<i32> {
  638        self.0.bind(statement, start_index)
  639    }
  640}
  641impl Column for WorkspaceId {
  642    fn column(statement: &mut Statement, start_index: i32) -> Result<(Self, i32)> {
  643        i64::column(statement, start_index)
  644            .map(|(i, next_index)| (Self(i), next_index))
  645            .with_context(|| format!("Failed to read WorkspaceId at index {start_index}"))
  646    }
  647}
  648impl From<WorkspaceId> for i64 {
  649    fn from(val: WorkspaceId) -> Self {
  650        val.0
  651    }
  652}
  653
  654fn prompt_and_open_paths(app_state: Arc<AppState>, options: PathPromptOptions, cx: &mut App) {
  655    if let Some(workspace_window) = local_workspace_windows(cx).into_iter().next() {
  656        workspace_window
  657            .update(cx, |multi_workspace, window, cx| {
  658                let workspace = multi_workspace.workspace().clone();
  659                workspace.update(cx, |workspace, cx| {
  660                    prompt_for_open_path_and_open(workspace, app_state, options, true, window, cx);
  661                });
  662            })
  663            .ok();
  664    } else {
  665        let task = Workspace::new_local(Vec::new(), app_state.clone(), None, None, None, true, cx);
  666        cx.spawn(async move |cx| {
  667            let OpenResult { window, .. } = task.await?;
  668            window.update(cx, |multi_workspace, window, cx| {
  669                window.activate_window();
  670                let workspace = multi_workspace.workspace().clone();
  671                workspace.update(cx, |workspace, cx| {
  672                    prompt_for_open_path_and_open(workspace, app_state, options, true, window, cx);
  673                });
  674            })?;
  675            anyhow::Ok(())
  676        })
  677        .detach_and_log_err(cx);
  678    }
  679}
  680
  681pub fn prompt_for_open_path_and_open(
  682    workspace: &mut Workspace,
  683    app_state: Arc<AppState>,
  684    options: PathPromptOptions,
  685    create_new_window: bool,
  686    window: &mut Window,
  687    cx: &mut Context<Workspace>,
  688) {
  689    let paths = workspace.prompt_for_open_path(
  690        options,
  691        DirectoryLister::Local(workspace.project().clone(), app_state.fs.clone()),
  692        window,
  693        cx,
  694    );
  695    let multi_workspace_handle = window.window_handle().downcast::<MultiWorkspace>();
  696    cx.spawn_in(window, async move |this, cx| {
  697        let Some(paths) = paths.await.log_err().flatten() else {
  698            return;
  699        };
  700        if !create_new_window {
  701            if let Some(handle) = multi_workspace_handle {
  702                if let Some(task) = handle
  703                    .update(cx, |multi_workspace, window, cx| {
  704                        multi_workspace.open_project(paths, window, cx)
  705                    })
  706                    .log_err()
  707                {
  708                    task.await.log_err();
  709                }
  710                return;
  711            }
  712        }
  713        if let Some(task) = this
  714            .update_in(cx, |this, window, cx| {
  715                this.open_workspace_for_paths(false, paths, window, cx)
  716            })
  717            .log_err()
  718        {
  719            task.await.log_err();
  720        }
  721    })
  722    .detach();
  723}
  724
  725pub fn init(app_state: Arc<AppState>, cx: &mut App) {
  726    component::init();
  727    theme_preview::init(cx);
  728    toast_layer::init(cx);
  729    history_manager::init(app_state.fs.clone(), cx);
  730
  731    cx.on_action(|_: &CloseWindow, cx| Workspace::close_global(cx))
  732        .on_action(|_: &Reload, cx| reload(cx))
  733        .on_action({
  734            let app_state = Arc::downgrade(&app_state);
  735            move |_: &Open, cx: &mut App| {
  736                if let Some(app_state) = app_state.upgrade() {
  737                    prompt_and_open_paths(
  738                        app_state,
  739                        PathPromptOptions {
  740                            files: true,
  741                            directories: true,
  742                            multiple: true,
  743                            prompt: None,
  744                        },
  745                        cx,
  746                    );
  747                }
  748            }
  749        })
  750        .on_action({
  751            let app_state = Arc::downgrade(&app_state);
  752            move |_: &OpenFiles, cx: &mut App| {
  753                let directories = cx.can_select_mixed_files_and_dirs();
  754                if let Some(app_state) = app_state.upgrade() {
  755                    prompt_and_open_paths(
  756                        app_state,
  757                        PathPromptOptions {
  758                            files: true,
  759                            directories,
  760                            multiple: true,
  761                            prompt: None,
  762                        },
  763                        cx,
  764                    );
  765                }
  766            }
  767        });
  768}
  769
  770type BuildProjectItemFn =
  771    fn(AnyEntity, Entity<Project>, Option<&Pane>, &mut Window, &mut App) -> Box<dyn ItemHandle>;
  772
  773type BuildProjectItemForPathFn =
  774    fn(
  775        &Entity<Project>,
  776        &ProjectPath,
  777        &mut Window,
  778        &mut App,
  779    ) -> Option<Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>>>;
  780
  781#[derive(Clone, Default)]
  782struct ProjectItemRegistry {
  783    build_project_item_fns_by_type: HashMap<TypeId, BuildProjectItemFn>,
  784    build_project_item_for_path_fns: Vec<BuildProjectItemForPathFn>,
  785}
  786
  787impl ProjectItemRegistry {
  788    fn register<T: ProjectItem>(&mut self) {
  789        self.build_project_item_fns_by_type.insert(
  790            TypeId::of::<T::Item>(),
  791            |item, project, pane, window, cx| {
  792                let item = item.downcast().unwrap();
  793                Box::new(cx.new(|cx| T::for_project_item(project, pane, item, window, cx)))
  794                    as Box<dyn ItemHandle>
  795            },
  796        );
  797        self.build_project_item_for_path_fns
  798            .push(|project, project_path, window, cx| {
  799                let project_path = project_path.clone();
  800                let is_file = project
  801                    .read(cx)
  802                    .entry_for_path(&project_path, cx)
  803                    .is_some_and(|entry| entry.is_file());
  804                let entry_abs_path = project.read(cx).absolute_path(&project_path, cx);
  805                let is_local = project.read(cx).is_local();
  806                let project_item =
  807                    <T::Item as project::ProjectItem>::try_open(project, &project_path, cx)?;
  808                let project = project.clone();
  809                Some(window.spawn(cx, async move |cx| {
  810                    match project_item.await.with_context(|| {
  811                        format!(
  812                            "opening project path {:?}",
  813                            entry_abs_path.as_deref().unwrap_or(&project_path.path.as_std_path())
  814                        )
  815                    }) {
  816                        Ok(project_item) => {
  817                            let project_item = project_item;
  818                            let project_entry_id: Option<ProjectEntryId> =
  819                                project_item.read_with(cx, project::ProjectItem::entry_id);
  820                            let build_workspace_item = Box::new(
  821                                |pane: &mut Pane, window: &mut Window, cx: &mut Context<Pane>| {
  822                                    Box::new(cx.new(|cx| {
  823                                        T::for_project_item(
  824                                            project,
  825                                            Some(pane),
  826                                            project_item,
  827                                            window,
  828                                            cx,
  829                                        )
  830                                    })) as Box<dyn ItemHandle>
  831                                },
  832                            ) as Box<_>;
  833                            Ok((project_entry_id, build_workspace_item))
  834                        }
  835                        Err(e) => {
  836                            log::warn!("Failed to open a project item: {e:#}");
  837                            if e.error_code() == ErrorCode::Internal {
  838                                if let Some(abs_path) =
  839                                    entry_abs_path.as_deref().filter(|_| is_file)
  840                                {
  841                                    if let Some(broken_project_item_view) =
  842                                        cx.update(|window, cx| {
  843                                            T::for_broken_project_item(
  844                                                abs_path, is_local, &e, window, cx,
  845                                            )
  846                                        })?
  847                                    {
  848                                        let build_workspace_item = Box::new(
  849                                            move |_: &mut Pane, _: &mut Window, cx: &mut Context<Pane>| {
  850                                                cx.new(|_| broken_project_item_view).boxed_clone()
  851                                            },
  852                                        )
  853                                        as Box<_>;
  854                                        return Ok((None, build_workspace_item));
  855                                    }
  856                                }
  857                            }
  858                            Err(e)
  859                        }
  860                    }
  861                }))
  862            });
  863    }
  864
  865    fn open_path(
  866        &self,
  867        project: &Entity<Project>,
  868        path: &ProjectPath,
  869        window: &mut Window,
  870        cx: &mut App,
  871    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
  872        let Some(open_project_item) = self
  873            .build_project_item_for_path_fns
  874            .iter()
  875            .rev()
  876            .find_map(|open_project_item| open_project_item(project, path, window, cx))
  877        else {
  878            return Task::ready(Err(anyhow!("cannot open file {:?}", path.path)));
  879        };
  880        open_project_item
  881    }
  882
  883    fn build_item<T: project::ProjectItem>(
  884        &self,
  885        item: Entity<T>,
  886        project: Entity<Project>,
  887        pane: Option<&Pane>,
  888        window: &mut Window,
  889        cx: &mut App,
  890    ) -> Option<Box<dyn ItemHandle>> {
  891        let build = self
  892            .build_project_item_fns_by_type
  893            .get(&TypeId::of::<T>())?;
  894        Some(build(item.into_any(), project, pane, window, cx))
  895    }
  896}
  897
  898type WorkspaceItemBuilder =
  899    Box<dyn FnOnce(&mut Pane, &mut Window, &mut Context<Pane>) -> Box<dyn ItemHandle>>;
  900
  901impl Global for ProjectItemRegistry {}
  902
  903/// Registers a [ProjectItem] for the app. When opening a file, all the registered
  904/// items will get a chance to open the file, starting from the project item that
  905/// was added last.
  906pub fn register_project_item<I: ProjectItem>(cx: &mut App) {
  907    cx.default_global::<ProjectItemRegistry>().register::<I>();
  908}
  909
  910#[derive(Default)]
  911pub struct FollowableViewRegistry(HashMap<TypeId, FollowableViewDescriptor>);
  912
  913struct FollowableViewDescriptor {
  914    from_state_proto: fn(
  915        Entity<Workspace>,
  916        ViewId,
  917        &mut Option<proto::view::Variant>,
  918        &mut Window,
  919        &mut App,
  920    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>>,
  921    to_followable_view: fn(&AnyView) -> Box<dyn FollowableItemHandle>,
  922}
  923
  924impl Global for FollowableViewRegistry {}
  925
  926impl FollowableViewRegistry {
  927    pub fn register<I: FollowableItem>(cx: &mut App) {
  928        cx.default_global::<Self>().0.insert(
  929            TypeId::of::<I>(),
  930            FollowableViewDescriptor {
  931                from_state_proto: |workspace, id, state, window, cx| {
  932                    I::from_state_proto(workspace, id, state, window, cx).map(|task| {
  933                        cx.foreground_executor()
  934                            .spawn(async move { Ok(Box::new(task.await?) as Box<_>) })
  935                    })
  936                },
  937                to_followable_view: |view| Box::new(view.clone().downcast::<I>().unwrap()),
  938            },
  939        );
  940    }
  941
  942    pub fn from_state_proto(
  943        workspace: Entity<Workspace>,
  944        view_id: ViewId,
  945        mut state: Option<proto::view::Variant>,
  946        window: &mut Window,
  947        cx: &mut App,
  948    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>> {
  949        cx.update_default_global(|this: &mut Self, cx| {
  950            this.0.values().find_map(|descriptor| {
  951                (descriptor.from_state_proto)(workspace.clone(), view_id, &mut state, window, cx)
  952            })
  953        })
  954    }
  955
  956    pub fn to_followable_view(
  957        view: impl Into<AnyView>,
  958        cx: &App,
  959    ) -> Option<Box<dyn FollowableItemHandle>> {
  960        let this = cx.try_global::<Self>()?;
  961        let view = view.into();
  962        let descriptor = this.0.get(&view.entity_type())?;
  963        Some((descriptor.to_followable_view)(&view))
  964    }
  965}
  966
  967#[derive(Copy, Clone)]
  968struct SerializableItemDescriptor {
  969    deserialize: fn(
  970        Entity<Project>,
  971        WeakEntity<Workspace>,
  972        WorkspaceId,
  973        ItemId,
  974        &mut Window,
  975        &mut Context<Pane>,
  976    ) -> Task<Result<Box<dyn ItemHandle>>>,
  977    cleanup: fn(WorkspaceId, Vec<ItemId>, &mut Window, &mut App) -> Task<Result<()>>,
  978    view_to_serializable_item: fn(AnyView) -> Box<dyn SerializableItemHandle>,
  979}
  980
  981#[derive(Default)]
  982struct SerializableItemRegistry {
  983    descriptors_by_kind: HashMap<Arc<str>, SerializableItemDescriptor>,
  984    descriptors_by_type: HashMap<TypeId, SerializableItemDescriptor>,
  985}
  986
  987impl Global for SerializableItemRegistry {}
  988
  989impl SerializableItemRegistry {
  990    fn deserialize(
  991        item_kind: &str,
  992        project: Entity<Project>,
  993        workspace: WeakEntity<Workspace>,
  994        workspace_id: WorkspaceId,
  995        item_item: ItemId,
  996        window: &mut Window,
  997        cx: &mut Context<Pane>,
  998    ) -> Task<Result<Box<dyn ItemHandle>>> {
  999        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
 1000            return Task::ready(Err(anyhow!(
 1001                "cannot deserialize {}, descriptor not found",
 1002                item_kind
 1003            )));
 1004        };
 1005
 1006        (descriptor.deserialize)(project, workspace, workspace_id, item_item, window, cx)
 1007    }
 1008
 1009    fn cleanup(
 1010        item_kind: &str,
 1011        workspace_id: WorkspaceId,
 1012        loaded_items: Vec<ItemId>,
 1013        window: &mut Window,
 1014        cx: &mut App,
 1015    ) -> Task<Result<()>> {
 1016        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
 1017            return Task::ready(Err(anyhow!(
 1018                "cannot cleanup {}, descriptor not found",
 1019                item_kind
 1020            )));
 1021        };
 1022
 1023        (descriptor.cleanup)(workspace_id, loaded_items, window, cx)
 1024    }
 1025
 1026    fn view_to_serializable_item_handle(
 1027        view: AnyView,
 1028        cx: &App,
 1029    ) -> Option<Box<dyn SerializableItemHandle>> {
 1030        let this = cx.try_global::<Self>()?;
 1031        let descriptor = this.descriptors_by_type.get(&view.entity_type())?;
 1032        Some((descriptor.view_to_serializable_item)(view))
 1033    }
 1034
 1035    fn descriptor(item_kind: &str, cx: &App) -> Option<SerializableItemDescriptor> {
 1036        let this = cx.try_global::<Self>()?;
 1037        this.descriptors_by_kind.get(item_kind).copied()
 1038    }
 1039}
 1040
 1041pub fn register_serializable_item<I: SerializableItem>(cx: &mut App) {
 1042    let serialized_item_kind = I::serialized_item_kind();
 1043
 1044    let registry = cx.default_global::<SerializableItemRegistry>();
 1045    let descriptor = SerializableItemDescriptor {
 1046        deserialize: |project, workspace, workspace_id, item_id, window, cx| {
 1047            let task = I::deserialize(project, workspace, workspace_id, item_id, window, cx);
 1048            cx.foreground_executor()
 1049                .spawn(async { Ok(Box::new(task.await?) as Box<_>) })
 1050        },
 1051        cleanup: |workspace_id, loaded_items, window, cx| {
 1052            I::cleanup(workspace_id, loaded_items, window, cx)
 1053        },
 1054        view_to_serializable_item: |view| Box::new(view.downcast::<I>().unwrap()),
 1055    };
 1056    registry
 1057        .descriptors_by_kind
 1058        .insert(Arc::from(serialized_item_kind), descriptor);
 1059    registry
 1060        .descriptors_by_type
 1061        .insert(TypeId::of::<I>(), descriptor);
 1062}
 1063
 1064pub struct AppState {
 1065    pub languages: Arc<LanguageRegistry>,
 1066    pub client: Arc<Client>,
 1067    pub user_store: Entity<UserStore>,
 1068    pub workspace_store: Entity<WorkspaceStore>,
 1069    pub fs: Arc<dyn fs::Fs>,
 1070    pub build_window_options: fn(Option<Uuid>, &mut App) -> WindowOptions,
 1071    pub node_runtime: NodeRuntime,
 1072    pub session: Entity<AppSession>,
 1073}
 1074
 1075struct GlobalAppState(Weak<AppState>);
 1076
 1077impl Global for GlobalAppState {}
 1078
 1079pub struct WorkspaceStore {
 1080    workspaces: HashSet<(gpui::AnyWindowHandle, WeakEntity<Workspace>)>,
 1081    client: Arc<Client>,
 1082    _subscriptions: Vec<client::Subscription>,
 1083}
 1084
 1085#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq, PartialOrd, Ord)]
 1086pub enum CollaboratorId {
 1087    PeerId(PeerId),
 1088    Agent,
 1089}
 1090
 1091impl From<PeerId> for CollaboratorId {
 1092    fn from(peer_id: PeerId) -> Self {
 1093        CollaboratorId::PeerId(peer_id)
 1094    }
 1095}
 1096
 1097impl From<&PeerId> for CollaboratorId {
 1098    fn from(peer_id: &PeerId) -> Self {
 1099        CollaboratorId::PeerId(*peer_id)
 1100    }
 1101}
 1102
 1103#[derive(PartialEq, Eq, PartialOrd, Ord, Debug)]
 1104struct Follower {
 1105    project_id: Option<u64>,
 1106    peer_id: PeerId,
 1107}
 1108
 1109impl AppState {
 1110    #[track_caller]
 1111    pub fn global(cx: &App) -> Weak<Self> {
 1112        cx.global::<GlobalAppState>().0.clone()
 1113    }
 1114    pub fn try_global(cx: &App) -> Option<Weak<Self>> {
 1115        cx.try_global::<GlobalAppState>()
 1116            .map(|state| state.0.clone())
 1117    }
 1118    pub fn set_global(state: Weak<AppState>, cx: &mut App) {
 1119        cx.set_global(GlobalAppState(state));
 1120    }
 1121
 1122    #[cfg(any(test, feature = "test-support"))]
 1123    pub fn test(cx: &mut App) -> Arc<Self> {
 1124        use fs::Fs;
 1125        use node_runtime::NodeRuntime;
 1126        use session::Session;
 1127        use settings::SettingsStore;
 1128
 1129        if !cx.has_global::<SettingsStore>() {
 1130            let settings_store = SettingsStore::test(cx);
 1131            cx.set_global(settings_store);
 1132        }
 1133
 1134        let fs = fs::FakeFs::new(cx.background_executor().clone());
 1135        <dyn Fs>::set_global(fs.clone(), cx);
 1136        let languages = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));
 1137        let clock = Arc::new(clock::FakeSystemClock::new());
 1138        let http_client = http_client::FakeHttpClient::with_404_response();
 1139        let client = Client::new(clock, http_client, cx);
 1140        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 1141        let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
 1142        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 1143
 1144        theme::init(theme::LoadThemes::JustBase, cx);
 1145        client::init(&client, cx);
 1146
 1147        Arc::new(Self {
 1148            client,
 1149            fs,
 1150            languages,
 1151            user_store,
 1152            workspace_store,
 1153            node_runtime: NodeRuntime::unavailable(),
 1154            build_window_options: |_, _| Default::default(),
 1155            session,
 1156        })
 1157    }
 1158}
 1159
 1160struct DelayedDebouncedEditAction {
 1161    task: Option<Task<()>>,
 1162    cancel_channel: Option<oneshot::Sender<()>>,
 1163}
 1164
 1165impl DelayedDebouncedEditAction {
 1166    fn new() -> DelayedDebouncedEditAction {
 1167        DelayedDebouncedEditAction {
 1168            task: None,
 1169            cancel_channel: None,
 1170        }
 1171    }
 1172
 1173    fn fire_new<F>(
 1174        &mut self,
 1175        delay: Duration,
 1176        window: &mut Window,
 1177        cx: &mut Context<Workspace>,
 1178        func: F,
 1179    ) where
 1180        F: 'static
 1181            + Send
 1182            + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> Task<Result<()>>,
 1183    {
 1184        if let Some(channel) = self.cancel_channel.take() {
 1185            _ = channel.send(());
 1186        }
 1187
 1188        let (sender, mut receiver) = oneshot::channel::<()>();
 1189        self.cancel_channel = Some(sender);
 1190
 1191        let previous_task = self.task.take();
 1192        self.task = Some(cx.spawn_in(window, async move |workspace, cx| {
 1193            let mut timer = cx.background_executor().timer(delay).fuse();
 1194            if let Some(previous_task) = previous_task {
 1195                previous_task.await;
 1196            }
 1197
 1198            futures::select_biased! {
 1199                _ = receiver => return,
 1200                    _ = timer => {}
 1201            }
 1202
 1203            if let Some(result) = workspace
 1204                .update_in(cx, |workspace, window, cx| (func)(workspace, window, cx))
 1205                .log_err()
 1206            {
 1207                result.await.log_err();
 1208            }
 1209        }));
 1210    }
 1211}
 1212
 1213pub enum Event {
 1214    PaneAdded(Entity<Pane>),
 1215    PaneRemoved,
 1216    ItemAdded {
 1217        item: Box<dyn ItemHandle>,
 1218    },
 1219    ActiveItemChanged,
 1220    ItemRemoved {
 1221        item_id: EntityId,
 1222    },
 1223    UserSavedItem {
 1224        pane: WeakEntity<Pane>,
 1225        item: Box<dyn WeakItemHandle>,
 1226        save_intent: SaveIntent,
 1227    },
 1228    ContactRequestedJoin(u64),
 1229    WorkspaceCreated(WeakEntity<Workspace>),
 1230    OpenBundledFile {
 1231        text: Cow<'static, str>,
 1232        title: &'static str,
 1233        language: &'static str,
 1234    },
 1235    ZoomChanged,
 1236    ModalOpened,
 1237    Activate,
 1238    PanelAdded(AnyView),
 1239}
 1240
 1241#[derive(Debug, Clone)]
 1242pub enum OpenVisible {
 1243    All,
 1244    None,
 1245    OnlyFiles,
 1246    OnlyDirectories,
 1247}
 1248
 1249enum WorkspaceLocation {
 1250    // Valid local paths or SSH project to serialize
 1251    Location(SerializedWorkspaceLocation, PathList),
 1252    // No valid location found hence clear session id
 1253    DetachFromSession,
 1254    // No valid location found to serialize
 1255    None,
 1256}
 1257
 1258type PromptForNewPath = Box<
 1259    dyn Fn(
 1260        &mut Workspace,
 1261        DirectoryLister,
 1262        Option<String>,
 1263        &mut Window,
 1264        &mut Context<Workspace>,
 1265    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1266>;
 1267
 1268type PromptForOpenPath = Box<
 1269    dyn Fn(
 1270        &mut Workspace,
 1271        DirectoryLister,
 1272        &mut Window,
 1273        &mut Context<Workspace>,
 1274    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1275>;
 1276
 1277#[derive(Default)]
 1278struct DispatchingKeystrokes {
 1279    dispatched: HashSet<Vec<Keystroke>>,
 1280    queue: VecDeque<Keystroke>,
 1281    task: Option<Shared<Task<()>>>,
 1282}
 1283
 1284/// Collects everything project-related for a certain window opened.
 1285/// In some way, is a counterpart of a window, as the [`WindowHandle`] could be downcast into `Workspace`.
 1286///
 1287/// A `Workspace` usually consists of 1 or more projects, a central pane group, 3 docks and a status bar.
 1288/// The `Workspace` owns everybody's state and serves as a default, "global context",
 1289/// that can be used to register a global action to be triggered from any place in the window.
 1290pub struct Workspace {
 1291    weak_self: WeakEntity<Self>,
 1292    workspace_actions: Vec<Box<dyn Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div>>,
 1293    zoomed: Option<AnyWeakView>,
 1294    previous_dock_drag_coordinates: Option<Point<Pixels>>,
 1295    zoomed_position: Option<DockPosition>,
 1296    center: PaneGroup,
 1297    left_dock: Entity<Dock>,
 1298    bottom_dock: Entity<Dock>,
 1299    right_dock: Entity<Dock>,
 1300    panes: Vec<Entity<Pane>>,
 1301    active_worktree_override: Option<WorktreeId>,
 1302    panes_by_item: HashMap<EntityId, WeakEntity<Pane>>,
 1303    active_pane: Entity<Pane>,
 1304    last_active_center_pane: Option<WeakEntity<Pane>>,
 1305    last_active_view_id: Option<proto::ViewId>,
 1306    status_bar: Entity<StatusBar>,
 1307    pub(crate) modal_layer: Entity<ModalLayer>,
 1308    toast_layer: Entity<ToastLayer>,
 1309    titlebar_item: Option<AnyView>,
 1310    notifications: Notifications,
 1311    suppressed_notifications: HashSet<NotificationId>,
 1312    project: Entity<Project>,
 1313    follower_states: HashMap<CollaboratorId, FollowerState>,
 1314    last_leaders_by_pane: HashMap<WeakEntity<Pane>, CollaboratorId>,
 1315    window_edited: bool,
 1316    last_window_title: Option<String>,
 1317    dirty_items: HashMap<EntityId, Subscription>,
 1318    active_call: Option<(GlobalAnyActiveCall, Vec<Subscription>)>,
 1319    leader_updates_tx: mpsc::UnboundedSender<(PeerId, proto::UpdateFollowers)>,
 1320    database_id: Option<WorkspaceId>,
 1321    app_state: Arc<AppState>,
 1322    dispatching_keystrokes: Rc<RefCell<DispatchingKeystrokes>>,
 1323    _subscriptions: Vec<Subscription>,
 1324    _apply_leader_updates: Task<Result<()>>,
 1325    _observe_current_user: Task<Result<()>>,
 1326    _schedule_serialize_workspace: Option<Task<()>>,
 1327    _serialize_workspace_task: Option<Task<()>>,
 1328    _schedule_serialize_ssh_paths: Option<Task<()>>,
 1329    pane_history_timestamp: Arc<AtomicUsize>,
 1330    bounds: Bounds<Pixels>,
 1331    pub centered_layout: bool,
 1332    bounds_save_task_queued: Option<Task<()>>,
 1333    on_prompt_for_new_path: Option<PromptForNewPath>,
 1334    on_prompt_for_open_path: Option<PromptForOpenPath>,
 1335    terminal_provider: Option<Box<dyn TerminalProvider>>,
 1336    debugger_provider: Option<Arc<dyn DebuggerProvider>>,
 1337    serializable_items_tx: UnboundedSender<Box<dyn SerializableItemHandle>>,
 1338    _items_serializer: Task<Result<()>>,
 1339    session_id: Option<String>,
 1340    scheduled_tasks: Vec<Task<()>>,
 1341    last_open_dock_positions: Vec<DockPosition>,
 1342    removing: bool,
 1343    _panels_task: Option<Task<Result<()>>>,
 1344    sidebar_focus_handle: Option<FocusHandle>,
 1345    multi_workspace: Option<WeakEntity<MultiWorkspace>>,
 1346}
 1347
 1348impl EventEmitter<Event> for Workspace {}
 1349
 1350#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
 1351pub struct ViewId {
 1352    pub creator: CollaboratorId,
 1353    pub id: u64,
 1354}
 1355
 1356pub struct FollowerState {
 1357    center_pane: Entity<Pane>,
 1358    dock_pane: Option<Entity<Pane>>,
 1359    active_view_id: Option<ViewId>,
 1360    items_by_leader_view_id: HashMap<ViewId, FollowerView>,
 1361}
 1362
 1363struct FollowerView {
 1364    view: Box<dyn FollowableItemHandle>,
 1365    location: Option<proto::PanelId>,
 1366}
 1367
 1368impl Workspace {
 1369    pub fn new(
 1370        workspace_id: Option<WorkspaceId>,
 1371        project: Entity<Project>,
 1372        app_state: Arc<AppState>,
 1373        window: &mut Window,
 1374        cx: &mut Context<Self>,
 1375    ) -> Self {
 1376        if let Some(trusted_worktrees) = TrustedWorktrees::try_get_global(cx) {
 1377            cx.subscribe(&trusted_worktrees, |_, worktrees_store, e, cx| {
 1378                if let TrustedWorktreesEvent::Trusted(..) = e {
 1379                    // Do not persist auto trusted worktrees
 1380                    if !ProjectSettings::get_global(cx).session.trust_all_worktrees {
 1381                        worktrees_store.update(cx, |worktrees_store, cx| {
 1382                            worktrees_store.schedule_serialization(
 1383                                cx,
 1384                                |new_trusted_worktrees, cx| {
 1385                                    let timeout =
 1386                                        cx.background_executor().timer(SERIALIZATION_THROTTLE_TIME);
 1387                                    let db = WorkspaceDb::global(cx);
 1388                                    cx.background_spawn(async move {
 1389                                        timeout.await;
 1390                                        db.save_trusted_worktrees(new_trusted_worktrees)
 1391                                            .await
 1392                                            .log_err();
 1393                                    })
 1394                                },
 1395                            )
 1396                        });
 1397                    }
 1398                }
 1399            })
 1400            .detach();
 1401
 1402            cx.observe_global::<SettingsStore>(|_, cx| {
 1403                if ProjectSettings::get_global(cx).session.trust_all_worktrees {
 1404                    if let Some(trusted_worktrees) = TrustedWorktrees::try_get_global(cx) {
 1405                        trusted_worktrees.update(cx, |trusted_worktrees, cx| {
 1406                            trusted_worktrees.auto_trust_all(cx);
 1407                        })
 1408                    }
 1409                }
 1410            })
 1411            .detach();
 1412        }
 1413
 1414        cx.subscribe_in(&project, window, move |this, _, event, window, cx| {
 1415            match event {
 1416                project::Event::RemoteIdChanged(_) => {
 1417                    this.update_window_title(window, cx);
 1418                }
 1419
 1420                project::Event::CollaboratorLeft(peer_id) => {
 1421                    this.collaborator_left(*peer_id, window, cx);
 1422                }
 1423
 1424                &project::Event::WorktreeRemoved(_) => {
 1425                    this.update_window_title(window, cx);
 1426                    this.serialize_workspace(window, cx);
 1427                    this.update_history(cx);
 1428                }
 1429
 1430                &project::Event::WorktreeAdded(id) => {
 1431                    this.update_window_title(window, cx);
 1432                    if this
 1433                        .project()
 1434                        .read(cx)
 1435                        .worktree_for_id(id, cx)
 1436                        .is_some_and(|wt| wt.read(cx).is_visible())
 1437                    {
 1438                        this.serialize_workspace(window, cx);
 1439                        this.update_history(cx);
 1440                    }
 1441                }
 1442                project::Event::WorktreeUpdatedEntries(..) => {
 1443                    this.update_window_title(window, cx);
 1444                    this.serialize_workspace(window, cx);
 1445                }
 1446
 1447                project::Event::DisconnectedFromHost => {
 1448                    this.update_window_edited(window, cx);
 1449                    let leaders_to_unfollow =
 1450                        this.follower_states.keys().copied().collect::<Vec<_>>();
 1451                    for leader_id in leaders_to_unfollow {
 1452                        this.unfollow(leader_id, window, cx);
 1453                    }
 1454                }
 1455
 1456                project::Event::DisconnectedFromRemote {
 1457                    server_not_running: _,
 1458                } => {
 1459                    this.update_window_edited(window, cx);
 1460                }
 1461
 1462                project::Event::Closed => {
 1463                    window.remove_window();
 1464                }
 1465
 1466                project::Event::DeletedEntry(_, entry_id) => {
 1467                    for pane in this.panes.iter() {
 1468                        pane.update(cx, |pane, cx| {
 1469                            pane.handle_deleted_project_item(*entry_id, window, cx)
 1470                        });
 1471                    }
 1472                }
 1473
 1474                project::Event::Toast {
 1475                    notification_id,
 1476                    message,
 1477                    link,
 1478                } => this.show_notification(
 1479                    NotificationId::named(notification_id.clone()),
 1480                    cx,
 1481                    |cx| {
 1482                        let mut notification = MessageNotification::new(message.clone(), cx);
 1483                        if let Some(link) = link {
 1484                            notification = notification
 1485                                .more_info_message(link.label)
 1486                                .more_info_url(link.url);
 1487                        }
 1488
 1489                        cx.new(|_| notification)
 1490                    },
 1491                ),
 1492
 1493                project::Event::HideToast { notification_id } => {
 1494                    this.dismiss_notification(&NotificationId::named(notification_id.clone()), cx)
 1495                }
 1496
 1497                project::Event::LanguageServerPrompt(request) => {
 1498                    struct LanguageServerPrompt;
 1499
 1500                    this.show_notification(
 1501                        NotificationId::composite::<LanguageServerPrompt>(request.id),
 1502                        cx,
 1503                        |cx| {
 1504                            cx.new(|cx| {
 1505                                notifications::LanguageServerPrompt::new(request.clone(), cx)
 1506                            })
 1507                        },
 1508                    );
 1509                }
 1510
 1511                project::Event::AgentLocationChanged => {
 1512                    this.handle_agent_location_changed(window, cx)
 1513                }
 1514
 1515                _ => {}
 1516            }
 1517            cx.notify()
 1518        })
 1519        .detach();
 1520
 1521        cx.subscribe_in(
 1522            &project.read(cx).breakpoint_store(),
 1523            window,
 1524            |workspace, _, event, window, cx| match event {
 1525                BreakpointStoreEvent::BreakpointsUpdated(_, _)
 1526                | BreakpointStoreEvent::BreakpointsCleared(_) => {
 1527                    workspace.serialize_workspace(window, cx);
 1528                }
 1529                BreakpointStoreEvent::SetDebugLine | BreakpointStoreEvent::ClearDebugLines => {}
 1530            },
 1531        )
 1532        .detach();
 1533        if let Some(toolchain_store) = project.read(cx).toolchain_store() {
 1534            cx.subscribe_in(
 1535                &toolchain_store,
 1536                window,
 1537                |workspace, _, event, window, cx| match event {
 1538                    ToolchainStoreEvent::CustomToolchainsModified => {
 1539                        workspace.serialize_workspace(window, cx);
 1540                    }
 1541                    _ => {}
 1542                },
 1543            )
 1544            .detach();
 1545        }
 1546
 1547        cx.on_focus_lost(window, |this, window, cx| {
 1548            let focus_handle = this.focus_handle(cx);
 1549            window.focus(&focus_handle, cx);
 1550        })
 1551        .detach();
 1552
 1553        let weak_handle = cx.entity().downgrade();
 1554        let pane_history_timestamp = Arc::new(AtomicUsize::new(0));
 1555
 1556        let center_pane = cx.new(|cx| {
 1557            let mut center_pane = Pane::new(
 1558                weak_handle.clone(),
 1559                project.clone(),
 1560                pane_history_timestamp.clone(),
 1561                None,
 1562                NewFile.boxed_clone(),
 1563                true,
 1564                window,
 1565                cx,
 1566            );
 1567            center_pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 1568            center_pane.set_should_display_welcome_page(true);
 1569            center_pane
 1570        });
 1571        cx.subscribe_in(&center_pane, window, Self::handle_pane_event)
 1572            .detach();
 1573
 1574        window.focus(&center_pane.focus_handle(cx), cx);
 1575
 1576        cx.emit(Event::PaneAdded(center_pane.clone()));
 1577
 1578        let any_window_handle = window.window_handle();
 1579        app_state.workspace_store.update(cx, |store, _| {
 1580            store
 1581                .workspaces
 1582                .insert((any_window_handle, weak_handle.clone()));
 1583        });
 1584
 1585        let mut current_user = app_state.user_store.read(cx).watch_current_user();
 1586        let mut connection_status = app_state.client.status();
 1587        let _observe_current_user = cx.spawn_in(window, async move |this, cx| {
 1588            current_user.next().await;
 1589            connection_status.next().await;
 1590            let mut stream =
 1591                Stream::map(current_user, drop).merge(Stream::map(connection_status, drop));
 1592
 1593            while stream.recv().await.is_some() {
 1594                this.update(cx, |_, cx| cx.notify())?;
 1595            }
 1596            anyhow::Ok(())
 1597        });
 1598
 1599        // All leader updates are enqueued and then processed in a single task, so
 1600        // that each asynchronous operation can be run in order.
 1601        let (leader_updates_tx, mut leader_updates_rx) =
 1602            mpsc::unbounded::<(PeerId, proto::UpdateFollowers)>();
 1603        let _apply_leader_updates = cx.spawn_in(window, async move |this, cx| {
 1604            while let Some((leader_id, update)) = leader_updates_rx.next().await {
 1605                Self::process_leader_update(&this, leader_id, update, cx)
 1606                    .await
 1607                    .log_err();
 1608            }
 1609
 1610            Ok(())
 1611        });
 1612
 1613        cx.emit(Event::WorkspaceCreated(weak_handle.clone()));
 1614        let modal_layer = cx.new(|_| ModalLayer::new());
 1615        let toast_layer = cx.new(|_| ToastLayer::new());
 1616        cx.subscribe(
 1617            &modal_layer,
 1618            |_, _, _: &modal_layer::ModalOpenedEvent, cx| {
 1619                cx.emit(Event::ModalOpened);
 1620            },
 1621        )
 1622        .detach();
 1623
 1624        let left_dock = Dock::new(DockPosition::Left, modal_layer.clone(), window, cx);
 1625        let bottom_dock = Dock::new(DockPosition::Bottom, modal_layer.clone(), window, cx);
 1626        let right_dock = Dock::new(DockPosition::Right, modal_layer.clone(), window, cx);
 1627        let left_dock_buttons = cx.new(|cx| PanelButtons::new(left_dock.clone(), cx));
 1628        let bottom_dock_buttons = cx.new(|cx| PanelButtons::new(bottom_dock.clone(), cx));
 1629        let right_dock_buttons = cx.new(|cx| PanelButtons::new(right_dock.clone(), cx));
 1630        let multi_workspace = window
 1631            .root::<MultiWorkspace>()
 1632            .flatten()
 1633            .map(|mw| mw.downgrade());
 1634        let status_bar = cx.new(|cx| {
 1635            let mut status_bar =
 1636                StatusBar::new(&center_pane.clone(), multi_workspace.clone(), window, cx);
 1637            status_bar.add_left_item(left_dock_buttons, window, cx);
 1638            status_bar.add_right_item(right_dock_buttons, window, cx);
 1639            status_bar.add_right_item(bottom_dock_buttons, window, cx);
 1640            status_bar
 1641        });
 1642
 1643        let session_id = app_state.session.read(cx).id().to_owned();
 1644
 1645        let mut active_call = None;
 1646        if let Some(call) = GlobalAnyActiveCall::try_global(cx).cloned() {
 1647            let subscriptions =
 1648                vec![
 1649                    call.0
 1650                        .subscribe(window, cx, Box::new(Self::on_active_call_event)),
 1651                ];
 1652            active_call = Some((call, subscriptions));
 1653        }
 1654
 1655        let (serializable_items_tx, serializable_items_rx) =
 1656            mpsc::unbounded::<Box<dyn SerializableItemHandle>>();
 1657        let _items_serializer = cx.spawn_in(window, async move |this, cx| {
 1658            Self::serialize_items(&this, serializable_items_rx, cx).await
 1659        });
 1660
 1661        let subscriptions = vec![
 1662            cx.observe_window_activation(window, Self::on_window_activation_changed),
 1663            cx.observe_window_bounds(window, move |this, window, cx| {
 1664                if this.bounds_save_task_queued.is_some() {
 1665                    return;
 1666                }
 1667                this.bounds_save_task_queued = Some(cx.spawn_in(window, async move |this, cx| {
 1668                    cx.background_executor()
 1669                        .timer(Duration::from_millis(100))
 1670                        .await;
 1671                    this.update_in(cx, |this, window, cx| {
 1672                        this.save_window_bounds(window, cx).detach();
 1673                        this.bounds_save_task_queued.take();
 1674                    })
 1675                    .ok();
 1676                }));
 1677                cx.notify();
 1678            }),
 1679            cx.observe_window_appearance(window, |_, window, cx| {
 1680                let window_appearance = window.appearance();
 1681
 1682                *SystemAppearance::global_mut(cx) = SystemAppearance(window_appearance.into());
 1683
 1684                GlobalTheme::reload_theme(cx);
 1685                GlobalTheme::reload_icon_theme(cx);
 1686            }),
 1687            cx.on_release({
 1688                let weak_handle = weak_handle.clone();
 1689                move |this, cx| {
 1690                    this.app_state.workspace_store.update(cx, move |store, _| {
 1691                        store.workspaces.retain(|(_, weak)| weak != &weak_handle);
 1692                    })
 1693                }
 1694            }),
 1695        ];
 1696
 1697        cx.defer_in(window, move |this, window, cx| {
 1698            this.update_window_title(window, cx);
 1699            this.show_initial_notifications(cx);
 1700        });
 1701
 1702        let mut center = PaneGroup::new(center_pane.clone());
 1703        center.set_is_center(true);
 1704        center.mark_positions(cx);
 1705
 1706        Workspace {
 1707            weak_self: weak_handle.clone(),
 1708            zoomed: None,
 1709            zoomed_position: None,
 1710            previous_dock_drag_coordinates: None,
 1711            center,
 1712            panes: vec![center_pane.clone()],
 1713            panes_by_item: Default::default(),
 1714            active_pane: center_pane.clone(),
 1715            last_active_center_pane: Some(center_pane.downgrade()),
 1716            last_active_view_id: None,
 1717            status_bar,
 1718            modal_layer,
 1719            toast_layer,
 1720            titlebar_item: None,
 1721            active_worktree_override: None,
 1722            notifications: Notifications::default(),
 1723            suppressed_notifications: HashSet::default(),
 1724            left_dock,
 1725            bottom_dock,
 1726            right_dock,
 1727            _panels_task: None,
 1728            project: project.clone(),
 1729            follower_states: Default::default(),
 1730            last_leaders_by_pane: Default::default(),
 1731            dispatching_keystrokes: Default::default(),
 1732            window_edited: false,
 1733            last_window_title: None,
 1734            dirty_items: Default::default(),
 1735            active_call,
 1736            database_id: workspace_id,
 1737            app_state,
 1738            _observe_current_user,
 1739            _apply_leader_updates,
 1740            _schedule_serialize_workspace: None,
 1741            _serialize_workspace_task: None,
 1742            _schedule_serialize_ssh_paths: None,
 1743            leader_updates_tx,
 1744            _subscriptions: subscriptions,
 1745            pane_history_timestamp,
 1746            workspace_actions: Default::default(),
 1747            // This data will be incorrect, but it will be overwritten by the time it needs to be used.
 1748            bounds: Default::default(),
 1749            centered_layout: false,
 1750            bounds_save_task_queued: None,
 1751            on_prompt_for_new_path: None,
 1752            on_prompt_for_open_path: None,
 1753            terminal_provider: None,
 1754            debugger_provider: None,
 1755            serializable_items_tx,
 1756            _items_serializer,
 1757            session_id: Some(session_id),
 1758
 1759            scheduled_tasks: Vec::new(),
 1760            last_open_dock_positions: Vec::new(),
 1761            removing: false,
 1762            sidebar_focus_handle: None,
 1763            multi_workspace,
 1764        }
 1765    }
 1766
 1767    pub fn new_local(
 1768        abs_paths: Vec<PathBuf>,
 1769        app_state: Arc<AppState>,
 1770        requesting_window: Option<WindowHandle<MultiWorkspace>>,
 1771        env: Option<HashMap<String, String>>,
 1772        init: Option<Box<dyn FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send>>,
 1773        activate: bool,
 1774        cx: &mut App,
 1775    ) -> Task<anyhow::Result<OpenResult>> {
 1776        let project_handle = Project::local(
 1777            app_state.client.clone(),
 1778            app_state.node_runtime.clone(),
 1779            app_state.user_store.clone(),
 1780            app_state.languages.clone(),
 1781            app_state.fs.clone(),
 1782            env,
 1783            Default::default(),
 1784            cx,
 1785        );
 1786
 1787        let db = WorkspaceDb::global(cx);
 1788        let kvp = db::kvp::KeyValueStore::global(cx);
 1789        cx.spawn(async move |cx| {
 1790            let mut paths_to_open = Vec::with_capacity(abs_paths.len());
 1791            for path in abs_paths.into_iter() {
 1792                if let Some(canonical) = app_state.fs.canonicalize(&path).await.ok() {
 1793                    paths_to_open.push(canonical)
 1794                } else {
 1795                    paths_to_open.push(path)
 1796                }
 1797            }
 1798
 1799            let serialized_workspace = db.workspace_for_roots(paths_to_open.as_slice());
 1800
 1801            if let Some(paths) = serialized_workspace.as_ref().map(|ws| &ws.paths) {
 1802                paths_to_open = paths.ordered_paths().cloned().collect();
 1803                if !paths.is_lexicographically_ordered() {
 1804                    project_handle.update(cx, |project, cx| {
 1805                        project.set_worktrees_reordered(true, cx);
 1806                    });
 1807                }
 1808            }
 1809
 1810            // Get project paths for all of the abs_paths
 1811            let mut project_paths: Vec<(PathBuf, Option<ProjectPath>)> =
 1812                Vec::with_capacity(paths_to_open.len());
 1813
 1814            for path in paths_to_open.into_iter() {
 1815                if let Some((_, project_entry)) = cx
 1816                    .update(|cx| {
 1817                        Workspace::project_path_for_path(project_handle.clone(), &path, true, cx)
 1818                    })
 1819                    .await
 1820                    .log_err()
 1821                {
 1822                    project_paths.push((path, Some(project_entry)));
 1823                } else {
 1824                    project_paths.push((path, None));
 1825                }
 1826            }
 1827
 1828            let workspace_id = if let Some(serialized_workspace) = serialized_workspace.as_ref() {
 1829                serialized_workspace.id
 1830            } else {
 1831                db.next_id().await.unwrap_or_else(|_| Default::default())
 1832            };
 1833
 1834            let toolchains = db.toolchains(workspace_id).await?;
 1835
 1836            for (toolchain, worktree_path, path) in toolchains {
 1837                let toolchain_path = PathBuf::from(toolchain.path.clone().to_string());
 1838                let Some(worktree_id) = project_handle.read_with(cx, |this, cx| {
 1839                    this.find_worktree(&worktree_path, cx)
 1840                        .and_then(|(worktree, rel_path)| {
 1841                            if rel_path.is_empty() {
 1842                                Some(worktree.read(cx).id())
 1843                            } else {
 1844                                None
 1845                            }
 1846                        })
 1847                }) else {
 1848                    // We did not find a worktree with a given path, but that's whatever.
 1849                    continue;
 1850                };
 1851                if !app_state.fs.is_file(toolchain_path.as_path()).await {
 1852                    continue;
 1853                }
 1854
 1855                project_handle
 1856                    .update(cx, |this, cx| {
 1857                        this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 1858                    })
 1859                    .await;
 1860            }
 1861            if let Some(workspace) = serialized_workspace.as_ref() {
 1862                project_handle.update(cx, |this, cx| {
 1863                    for (scope, toolchains) in &workspace.user_toolchains {
 1864                        for toolchain in toolchains {
 1865                            this.add_toolchain(toolchain.clone(), scope.clone(), cx);
 1866                        }
 1867                    }
 1868                });
 1869            }
 1870
 1871            let (window, workspace): (WindowHandle<MultiWorkspace>, Entity<Workspace>) =
 1872                if let Some(window) = requesting_window {
 1873                    let centered_layout = serialized_workspace
 1874                        .as_ref()
 1875                        .map(|w| w.centered_layout)
 1876                        .unwrap_or(false);
 1877
 1878                    let workspace = window.update(cx, |multi_workspace, window, cx| {
 1879                        let workspace = cx.new(|cx| {
 1880                            let mut workspace = Workspace::new(
 1881                                Some(workspace_id),
 1882                                project_handle.clone(),
 1883                                app_state.clone(),
 1884                                window,
 1885                                cx,
 1886                            );
 1887
 1888                            workspace.centered_layout = centered_layout;
 1889
 1890                            // Call init callback to add items before window renders
 1891                            if let Some(init) = init {
 1892                                init(&mut workspace, window, cx);
 1893                            }
 1894
 1895                            workspace
 1896                        });
 1897                        if activate {
 1898                            multi_workspace.activate(workspace.clone(), cx);
 1899                        } else {
 1900                            multi_workspace.add_workspace(workspace.clone(), cx);
 1901                        }
 1902                        workspace
 1903                    })?;
 1904                    (window, workspace)
 1905                } else {
 1906                    let window_bounds_override = window_bounds_env_override();
 1907
 1908                    let (window_bounds, display) = if let Some(bounds) = window_bounds_override {
 1909                        (Some(WindowBounds::Windowed(bounds)), None)
 1910                    } else if let Some(workspace) = serialized_workspace.as_ref()
 1911                        && let Some(display) = workspace.display
 1912                        && let Some(bounds) = workspace.window_bounds.as_ref()
 1913                    {
 1914                        // Reopening an existing workspace - restore its saved bounds
 1915                        (Some(bounds.0), Some(display))
 1916                    } else if let Some((display, bounds)) =
 1917                        persistence::read_default_window_bounds(&kvp)
 1918                    {
 1919                        // New or empty workspace - use the last known window bounds
 1920                        (Some(bounds), Some(display))
 1921                    } else {
 1922                        // New window - let GPUI's default_bounds() handle cascading
 1923                        (None, None)
 1924                    };
 1925
 1926                    // Use the serialized workspace to construct the new window
 1927                    let mut options = cx.update(|cx| (app_state.build_window_options)(display, cx));
 1928                    options.window_bounds = window_bounds;
 1929                    let centered_layout = serialized_workspace
 1930                        .as_ref()
 1931                        .map(|w| w.centered_layout)
 1932                        .unwrap_or(false);
 1933                    let window = cx.open_window(options, {
 1934                        let app_state = app_state.clone();
 1935                        let project_handle = project_handle.clone();
 1936                        move |window, cx| {
 1937                            let workspace = cx.new(|cx| {
 1938                                let mut workspace = Workspace::new(
 1939                                    Some(workspace_id),
 1940                                    project_handle,
 1941                                    app_state,
 1942                                    window,
 1943                                    cx,
 1944                                );
 1945                                workspace.centered_layout = centered_layout;
 1946
 1947                                // Call init callback to add items before window renders
 1948                                if let Some(init) = init {
 1949                                    init(&mut workspace, window, cx);
 1950                                }
 1951
 1952                                workspace
 1953                            });
 1954                            cx.new(|cx| MultiWorkspace::new(workspace, window, cx))
 1955                        }
 1956                    })?;
 1957                    let workspace =
 1958                        window.update(cx, |multi_workspace: &mut MultiWorkspace, _, _cx| {
 1959                            multi_workspace.workspace().clone()
 1960                        })?;
 1961                    (window, workspace)
 1962                };
 1963
 1964            notify_if_database_failed(window, cx);
 1965            // Check if this is an empty workspace (no paths to open)
 1966            // An empty workspace is one where project_paths is empty
 1967            let is_empty_workspace = project_paths.is_empty();
 1968            // Check if serialized workspace has paths before it's moved
 1969            let serialized_workspace_has_paths = serialized_workspace
 1970                .as_ref()
 1971                .map(|ws| !ws.paths.is_empty())
 1972                .unwrap_or(false);
 1973
 1974            let opened_items = window
 1975                .update(cx, |_, window, cx| {
 1976                    workspace.update(cx, |_workspace: &mut Workspace, cx| {
 1977                        open_items(serialized_workspace, project_paths, window, cx)
 1978                    })
 1979                })?
 1980                .await
 1981                .unwrap_or_default();
 1982
 1983            // Restore default dock state for empty workspaces
 1984            // Only restore if:
 1985            // 1. This is an empty workspace (no paths), AND
 1986            // 2. The serialized workspace either doesn't exist or has no paths
 1987            if is_empty_workspace && !serialized_workspace_has_paths {
 1988                if let Some(default_docks) = persistence::read_default_dock_state(&kvp) {
 1989                    window
 1990                        .update(cx, |_, window, cx| {
 1991                            workspace.update(cx, |workspace, cx| {
 1992                                for (dock, serialized_dock) in [
 1993                                    (&workspace.right_dock, &default_docks.right),
 1994                                    (&workspace.left_dock, &default_docks.left),
 1995                                    (&workspace.bottom_dock, &default_docks.bottom),
 1996                                ] {
 1997                                    dock.update(cx, |dock, cx| {
 1998                                        dock.serialized_dock = Some(serialized_dock.clone());
 1999                                        dock.restore_state(window, cx);
 2000                                    });
 2001                                }
 2002                                cx.notify();
 2003                            });
 2004                        })
 2005                        .log_err();
 2006                }
 2007            }
 2008
 2009            window
 2010                .update(cx, |_, _window, cx| {
 2011                    workspace.update(cx, |this: &mut Workspace, cx| {
 2012                        this.update_history(cx);
 2013                    });
 2014                })
 2015                .log_err();
 2016            Ok(OpenResult {
 2017                window,
 2018                workspace,
 2019                opened_items,
 2020            })
 2021        })
 2022    }
 2023
 2024    pub fn weak_handle(&self) -> WeakEntity<Self> {
 2025        self.weak_self.clone()
 2026    }
 2027
 2028    pub fn left_dock(&self) -> &Entity<Dock> {
 2029        &self.left_dock
 2030    }
 2031
 2032    pub fn bottom_dock(&self) -> &Entity<Dock> {
 2033        &self.bottom_dock
 2034    }
 2035
 2036    pub fn set_bottom_dock_layout(
 2037        &mut self,
 2038        layout: BottomDockLayout,
 2039        window: &mut Window,
 2040        cx: &mut Context<Self>,
 2041    ) {
 2042        let fs = self.project().read(cx).fs();
 2043        settings::update_settings_file(fs.clone(), cx, move |content, _cx| {
 2044            content.workspace.bottom_dock_layout = Some(layout);
 2045        });
 2046
 2047        cx.notify();
 2048        self.serialize_workspace(window, cx);
 2049    }
 2050
 2051    pub fn right_dock(&self) -> &Entity<Dock> {
 2052        &self.right_dock
 2053    }
 2054
 2055    pub fn all_docks(&self) -> [&Entity<Dock>; 3] {
 2056        [&self.left_dock, &self.bottom_dock, &self.right_dock]
 2057    }
 2058
 2059    pub fn capture_dock_state(&self, _window: &Window, cx: &App) -> DockStructure {
 2060        let left_dock = self.left_dock.read(cx);
 2061        let left_visible = left_dock.is_open();
 2062        let left_active_panel = left_dock
 2063            .active_panel()
 2064            .map(|panel| panel.persistent_name().to_string());
 2065        // `zoomed_position` is kept in sync with individual panel zoom state
 2066        // by the dock code in `Dock::new` and `Dock::add_panel`.
 2067        let left_dock_zoom = self.zoomed_position == Some(DockPosition::Left);
 2068
 2069        let right_dock = self.right_dock.read(cx);
 2070        let right_visible = right_dock.is_open();
 2071        let right_active_panel = right_dock
 2072            .active_panel()
 2073            .map(|panel| panel.persistent_name().to_string());
 2074        let right_dock_zoom = self.zoomed_position == Some(DockPosition::Right);
 2075
 2076        let bottom_dock = self.bottom_dock.read(cx);
 2077        let bottom_visible = bottom_dock.is_open();
 2078        let bottom_active_panel = bottom_dock
 2079            .active_panel()
 2080            .map(|panel| panel.persistent_name().to_string());
 2081        let bottom_dock_zoom = self.zoomed_position == Some(DockPosition::Bottom);
 2082
 2083        DockStructure {
 2084            left: DockData {
 2085                visible: left_visible,
 2086                active_panel: left_active_panel,
 2087                zoom: left_dock_zoom,
 2088            },
 2089            right: DockData {
 2090                visible: right_visible,
 2091                active_panel: right_active_panel,
 2092                zoom: right_dock_zoom,
 2093            },
 2094            bottom: DockData {
 2095                visible: bottom_visible,
 2096                active_panel: bottom_active_panel,
 2097                zoom: bottom_dock_zoom,
 2098            },
 2099        }
 2100    }
 2101
 2102    pub fn set_dock_structure(
 2103        &self,
 2104        docks: DockStructure,
 2105        window: &mut Window,
 2106        cx: &mut Context<Self>,
 2107    ) {
 2108        for (dock, data) in [
 2109            (&self.left_dock, docks.left),
 2110            (&self.bottom_dock, docks.bottom),
 2111            (&self.right_dock, docks.right),
 2112        ] {
 2113            dock.update(cx, |dock, cx| {
 2114                dock.serialized_dock = Some(data);
 2115                dock.restore_state(window, cx);
 2116            });
 2117        }
 2118    }
 2119
 2120    pub fn open_item_abs_paths(&self, cx: &App) -> Vec<PathBuf> {
 2121        self.items(cx)
 2122            .filter_map(|item| {
 2123                let project_path = item.project_path(cx)?;
 2124                self.project.read(cx).absolute_path(&project_path, cx)
 2125            })
 2126            .collect()
 2127    }
 2128
 2129    pub fn dock_at_position(&self, position: DockPosition) -> &Entity<Dock> {
 2130        match position {
 2131            DockPosition::Left => &self.left_dock,
 2132            DockPosition::Bottom => &self.bottom_dock,
 2133            DockPosition::Right => &self.right_dock,
 2134        }
 2135    }
 2136
 2137    pub fn agent_panel_position(&self, cx: &App) -> Option<DockPosition> {
 2138        self.all_docks().into_iter().find_map(|dock| {
 2139            let dock = dock.read(cx);
 2140            dock.has_agent_panel(cx).then_some(dock.position())
 2141        })
 2142    }
 2143
 2144    pub fn panel_size_state<T: Panel>(&self, cx: &App) -> Option<dock::PanelSizeState> {
 2145        self.all_docks().into_iter().find_map(|dock| {
 2146            let dock = dock.read(cx);
 2147            let panel = dock.panel::<T>()?;
 2148            dock.stored_panel_size_state(&panel)
 2149        })
 2150    }
 2151
 2152    pub fn persisted_panel_size_state(
 2153        &self,
 2154        panel_key: &'static str,
 2155        cx: &App,
 2156    ) -> Option<dock::PanelSizeState> {
 2157        dock::Dock::load_persisted_size_state(self, panel_key, cx)
 2158    }
 2159
 2160    pub fn persist_panel_size_state(
 2161        &self,
 2162        panel_key: &str,
 2163        size_state: dock::PanelSizeState,
 2164        cx: &mut App,
 2165    ) {
 2166        let Some(workspace_id) = self
 2167            .database_id()
 2168            .map(|id| i64::from(id).to_string())
 2169            .or(self.session_id())
 2170        else {
 2171            return;
 2172        };
 2173
 2174        let kvp = db::kvp::KeyValueStore::global(cx);
 2175        let panel_key = panel_key.to_string();
 2176        cx.background_spawn(async move {
 2177            let scope = kvp.scoped(dock::PANEL_SIZE_STATE_KEY);
 2178            scope
 2179                .write(
 2180                    format!("{workspace_id}:{panel_key}"),
 2181                    serde_json::to_string(&size_state)?,
 2182                )
 2183                .await
 2184        })
 2185        .detach_and_log_err(cx);
 2186    }
 2187
 2188    pub fn set_panel_size_state<T: Panel>(
 2189        &mut self,
 2190        size_state: dock::PanelSizeState,
 2191        window: &mut Window,
 2192        cx: &mut Context<Self>,
 2193    ) -> bool {
 2194        let Some(panel) = self.panel::<T>(cx) else {
 2195            return false;
 2196        };
 2197
 2198        let dock = self.dock_at_position(panel.position(window, cx));
 2199        let did_set = dock.update(cx, |dock, cx| {
 2200            dock.set_panel_size_state(&panel, size_state, cx)
 2201        });
 2202
 2203        if did_set {
 2204            self.persist_panel_size_state(T::panel_key(), size_state, cx);
 2205        }
 2206
 2207        did_set
 2208    }
 2209
 2210    pub fn flexible_dock_size(
 2211        &self,
 2212        position: DockPosition,
 2213        ratio: f32,
 2214        window: &Window,
 2215        cx: &App,
 2216    ) -> Option<Pixels> {
 2217        if position.axis() != Axis::Horizontal {
 2218            return None;
 2219        }
 2220
 2221        let available_width = self.available_width_for_horizontal_dock(position, window, cx)?;
 2222        Some((available_width * ratio.clamp(0.0, 1.0)).max(RESIZE_HANDLE_SIZE))
 2223    }
 2224
 2225    pub fn resolved_dock_panel_size(
 2226        &self,
 2227        dock: &Dock,
 2228        panel: &dyn PanelHandle,
 2229        window: &Window,
 2230        cx: &App,
 2231    ) -> Pixels {
 2232        let size_state = dock.stored_panel_size_state(panel).unwrap_or_default();
 2233        dock::resolve_panel_size(size_state, panel, dock.position(), self, window, cx)
 2234    }
 2235
 2236    pub fn flexible_dock_ratio_for_size(
 2237        &self,
 2238        position: DockPosition,
 2239        size: Pixels,
 2240        window: &Window,
 2241        cx: &App,
 2242    ) -> Option<f32> {
 2243        if position.axis() != Axis::Horizontal {
 2244            return None;
 2245        }
 2246
 2247        let available_width = self.available_width_for_horizontal_dock(position, window, cx)?;
 2248        let available_width = available_width.max(RESIZE_HANDLE_SIZE);
 2249        Some((size / available_width).clamp(0.0, 1.0))
 2250    }
 2251
 2252    fn available_width_for_horizontal_dock(
 2253        &self,
 2254        position: DockPosition,
 2255        window: &Window,
 2256        cx: &App,
 2257    ) -> Option<Pixels> {
 2258        let workspace_width = self.bounds.size.width;
 2259        if workspace_width <= Pixels::ZERO {
 2260            return None;
 2261        }
 2262
 2263        let opposite_position = match position {
 2264            DockPosition::Left => DockPosition::Right,
 2265            DockPosition::Right => DockPosition::Left,
 2266            DockPosition::Bottom => return None,
 2267        };
 2268
 2269        let opposite_width = self
 2270            .dock_at_position(opposite_position)
 2271            .read(cx)
 2272            .stored_active_panel_size(window, cx)
 2273            .unwrap_or(Pixels::ZERO);
 2274
 2275        Some((workspace_width - opposite_width).max(RESIZE_HANDLE_SIZE))
 2276    }
 2277
 2278    pub fn default_flexible_dock_ratio(&self, position: DockPosition) -> Option<f32> {
 2279        if position.axis() != Axis::Horizontal {
 2280            return None;
 2281        }
 2282
 2283        let pane = self.last_active_center_pane.clone()?.upgrade()?;
 2284        let pane_fraction = self.center.width_fraction_for_pane(&pane).unwrap_or(1.0);
 2285        Some((pane_fraction / (1.0 + pane_fraction)).clamp(0.0, 1.0))
 2286    }
 2287
 2288    pub fn is_edited(&self) -> bool {
 2289        self.window_edited
 2290    }
 2291
 2292    pub fn add_panel<T: Panel>(
 2293        &mut self,
 2294        panel: Entity<T>,
 2295        window: &mut Window,
 2296        cx: &mut Context<Self>,
 2297    ) {
 2298        let focus_handle = panel.panel_focus_handle(cx);
 2299        cx.on_focus_in(&focus_handle, window, Self::handle_panel_focused)
 2300            .detach();
 2301
 2302        let dock_position = panel.position(window, cx);
 2303        let dock = self.dock_at_position(dock_position);
 2304        let any_panel = panel.to_any();
 2305        let persisted_size_state =
 2306            self.persisted_panel_size_state(T::panel_key(), cx)
 2307                .or_else(|| {
 2308                    load_legacy_panel_size(T::panel_key(), dock_position, self, cx).map(|size| {
 2309                        let state = dock::PanelSizeState {
 2310                            size: Some(size),
 2311                            flexible_size_ratio: None,
 2312                        };
 2313                        self.persist_panel_size_state(T::panel_key(), state, cx);
 2314                        state
 2315                    })
 2316                });
 2317
 2318        dock.update(cx, |dock, cx| {
 2319            let index = dock.add_panel(panel.clone(), self.weak_self.clone(), window, cx);
 2320            if let Some(size_state) = persisted_size_state {
 2321                dock.set_panel_size_state(&panel, size_state, cx);
 2322            }
 2323            index
 2324        });
 2325
 2326        cx.emit(Event::PanelAdded(any_panel));
 2327    }
 2328
 2329    pub fn remove_panel<T: Panel>(
 2330        &mut self,
 2331        panel: &Entity<T>,
 2332        window: &mut Window,
 2333        cx: &mut Context<Self>,
 2334    ) {
 2335        for dock in [&self.left_dock, &self.bottom_dock, &self.right_dock] {
 2336            dock.update(cx, |dock, cx| dock.remove_panel(panel, window, cx));
 2337        }
 2338    }
 2339
 2340    pub fn status_bar(&self) -> &Entity<StatusBar> {
 2341        &self.status_bar
 2342    }
 2343
 2344    pub fn set_sidebar_focus_handle(&mut self, handle: Option<FocusHandle>) {
 2345        self.sidebar_focus_handle = handle;
 2346    }
 2347
 2348    pub fn status_bar_visible(&self, cx: &App) -> bool {
 2349        StatusBarSettings::get_global(cx).show
 2350    }
 2351
 2352    pub fn multi_workspace(&self) -> Option<&WeakEntity<MultiWorkspace>> {
 2353        self.multi_workspace.as_ref()
 2354    }
 2355
 2356    pub fn set_multi_workspace(
 2357        &mut self,
 2358        multi_workspace: WeakEntity<MultiWorkspace>,
 2359        cx: &mut App,
 2360    ) {
 2361        self.status_bar.update(cx, |status_bar, cx| {
 2362            status_bar.set_multi_workspace(multi_workspace.clone(), cx);
 2363        });
 2364        self.multi_workspace = Some(multi_workspace);
 2365    }
 2366
 2367    pub fn app_state(&self) -> &Arc<AppState> {
 2368        &self.app_state
 2369    }
 2370
 2371    pub fn set_panels_task(&mut self, task: Task<Result<()>>) {
 2372        self._panels_task = Some(task);
 2373    }
 2374
 2375    pub fn take_panels_task(&mut self) -> Option<Task<Result<()>>> {
 2376        self._panels_task.take()
 2377    }
 2378
 2379    pub fn user_store(&self) -> &Entity<UserStore> {
 2380        &self.app_state.user_store
 2381    }
 2382
 2383    pub fn project(&self) -> &Entity<Project> {
 2384        &self.project
 2385    }
 2386
 2387    pub fn path_style(&self, cx: &App) -> PathStyle {
 2388        self.project.read(cx).path_style(cx)
 2389    }
 2390
 2391    pub fn recently_activated_items(&self, cx: &App) -> HashMap<EntityId, usize> {
 2392        let mut history: HashMap<EntityId, usize> = HashMap::default();
 2393
 2394        for pane_handle in &self.panes {
 2395            let pane = pane_handle.read(cx);
 2396
 2397            for entry in pane.activation_history() {
 2398                history.insert(
 2399                    entry.entity_id,
 2400                    history
 2401                        .get(&entry.entity_id)
 2402                        .cloned()
 2403                        .unwrap_or(0)
 2404                        .max(entry.timestamp),
 2405                );
 2406            }
 2407        }
 2408
 2409        history
 2410    }
 2411
 2412    pub fn recent_active_item_by_type<T: 'static>(&self, cx: &App) -> Option<Entity<T>> {
 2413        let mut recent_item: Option<Entity<T>> = None;
 2414        let mut recent_timestamp = 0;
 2415        for pane_handle in &self.panes {
 2416            let pane = pane_handle.read(cx);
 2417            let item_map: HashMap<EntityId, &Box<dyn ItemHandle>> =
 2418                pane.items().map(|item| (item.item_id(), item)).collect();
 2419            for entry in pane.activation_history() {
 2420                if entry.timestamp > recent_timestamp
 2421                    && let Some(&item) = item_map.get(&entry.entity_id)
 2422                    && let Some(typed_item) = item.act_as::<T>(cx)
 2423                {
 2424                    recent_timestamp = entry.timestamp;
 2425                    recent_item = Some(typed_item);
 2426                }
 2427            }
 2428        }
 2429        recent_item
 2430    }
 2431
 2432    pub fn recent_navigation_history_iter(
 2433        &self,
 2434        cx: &App,
 2435    ) -> impl Iterator<Item = (ProjectPath, Option<PathBuf>)> + use<> {
 2436        let mut abs_paths_opened: HashMap<PathBuf, HashSet<ProjectPath>> = HashMap::default();
 2437        let mut history: HashMap<ProjectPath, (Option<PathBuf>, usize)> = HashMap::default();
 2438
 2439        for pane in &self.panes {
 2440            let pane = pane.read(cx);
 2441
 2442            pane.nav_history()
 2443                .for_each_entry(cx, &mut |entry, (project_path, fs_path)| {
 2444                    if let Some(fs_path) = &fs_path {
 2445                        abs_paths_opened
 2446                            .entry(fs_path.clone())
 2447                            .or_default()
 2448                            .insert(project_path.clone());
 2449                    }
 2450                    let timestamp = entry.timestamp;
 2451                    match history.entry(project_path) {
 2452                        hash_map::Entry::Occupied(mut entry) => {
 2453                            let (_, old_timestamp) = entry.get();
 2454                            if &timestamp > old_timestamp {
 2455                                entry.insert((fs_path, timestamp));
 2456                            }
 2457                        }
 2458                        hash_map::Entry::Vacant(entry) => {
 2459                            entry.insert((fs_path, timestamp));
 2460                        }
 2461                    }
 2462                });
 2463
 2464            if let Some(item) = pane.active_item()
 2465                && let Some(project_path) = item.project_path(cx)
 2466            {
 2467                let fs_path = self.project.read(cx).absolute_path(&project_path, cx);
 2468
 2469                if let Some(fs_path) = &fs_path {
 2470                    abs_paths_opened
 2471                        .entry(fs_path.clone())
 2472                        .or_default()
 2473                        .insert(project_path.clone());
 2474                }
 2475
 2476                history.insert(project_path, (fs_path, std::usize::MAX));
 2477            }
 2478        }
 2479
 2480        history
 2481            .into_iter()
 2482            .sorted_by_key(|(_, (_, order))| *order)
 2483            .map(|(project_path, (fs_path, _))| (project_path, fs_path))
 2484            .rev()
 2485            .filter(move |(history_path, abs_path)| {
 2486                let latest_project_path_opened = abs_path
 2487                    .as_ref()
 2488                    .and_then(|abs_path| abs_paths_opened.get(abs_path))
 2489                    .and_then(|project_paths| {
 2490                        project_paths
 2491                            .iter()
 2492                            .max_by(|b1, b2| b1.worktree_id.cmp(&b2.worktree_id))
 2493                    });
 2494
 2495                latest_project_path_opened.is_none_or(|path| path == history_path)
 2496            })
 2497    }
 2498
 2499    pub fn recent_navigation_history(
 2500        &self,
 2501        limit: Option<usize>,
 2502        cx: &App,
 2503    ) -> Vec<(ProjectPath, Option<PathBuf>)> {
 2504        self.recent_navigation_history_iter(cx)
 2505            .take(limit.unwrap_or(usize::MAX))
 2506            .collect()
 2507    }
 2508
 2509    pub fn clear_navigation_history(&mut self, _window: &mut Window, cx: &mut Context<Workspace>) {
 2510        for pane in &self.panes {
 2511            pane.update(cx, |pane, cx| pane.nav_history_mut().clear(cx));
 2512        }
 2513    }
 2514
 2515    fn navigate_history(
 2516        &mut self,
 2517        pane: WeakEntity<Pane>,
 2518        mode: NavigationMode,
 2519        window: &mut Window,
 2520        cx: &mut Context<Workspace>,
 2521    ) -> Task<Result<()>> {
 2522        self.navigate_history_impl(
 2523            pane,
 2524            mode,
 2525            window,
 2526            &mut |history, cx| history.pop(mode, cx),
 2527            cx,
 2528        )
 2529    }
 2530
 2531    fn navigate_tag_history(
 2532        &mut self,
 2533        pane: WeakEntity<Pane>,
 2534        mode: TagNavigationMode,
 2535        window: &mut Window,
 2536        cx: &mut Context<Workspace>,
 2537    ) -> Task<Result<()>> {
 2538        self.navigate_history_impl(
 2539            pane,
 2540            NavigationMode::Normal,
 2541            window,
 2542            &mut |history, _cx| history.pop_tag(mode),
 2543            cx,
 2544        )
 2545    }
 2546
 2547    fn navigate_history_impl(
 2548        &mut self,
 2549        pane: WeakEntity<Pane>,
 2550        mode: NavigationMode,
 2551        window: &mut Window,
 2552        cb: &mut dyn FnMut(&mut NavHistory, &mut App) -> Option<NavigationEntry>,
 2553        cx: &mut Context<Workspace>,
 2554    ) -> Task<Result<()>> {
 2555        let to_load = if let Some(pane) = pane.upgrade() {
 2556            pane.update(cx, |pane, cx| {
 2557                window.focus(&pane.focus_handle(cx), cx);
 2558                loop {
 2559                    // Retrieve the weak item handle from the history.
 2560                    let entry = cb(pane.nav_history_mut(), cx)?;
 2561
 2562                    // If the item is still present in this pane, then activate it.
 2563                    if let Some(index) = entry
 2564                        .item
 2565                        .upgrade()
 2566                        .and_then(|v| pane.index_for_item(v.as_ref()))
 2567                    {
 2568                        let prev_active_item_index = pane.active_item_index();
 2569                        pane.nav_history_mut().set_mode(mode);
 2570                        pane.activate_item(index, true, true, window, cx);
 2571                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 2572
 2573                        let mut navigated = prev_active_item_index != pane.active_item_index();
 2574                        if let Some(data) = entry.data {
 2575                            navigated |= pane.active_item()?.navigate(data, window, cx);
 2576                        }
 2577
 2578                        if navigated {
 2579                            break None;
 2580                        }
 2581                    } else {
 2582                        // If the item is no longer present in this pane, then retrieve its
 2583                        // path info in order to reopen it.
 2584                        break pane
 2585                            .nav_history()
 2586                            .path_for_item(entry.item.id())
 2587                            .map(|(project_path, abs_path)| (project_path, abs_path, entry));
 2588                    }
 2589                }
 2590            })
 2591        } else {
 2592            None
 2593        };
 2594
 2595        if let Some((project_path, abs_path, entry)) = to_load {
 2596            // If the item was no longer present, then load it again from its previous path, first try the local path
 2597            let open_by_project_path = self.load_path(project_path.clone(), window, cx);
 2598
 2599            cx.spawn_in(window, async move  |workspace, cx| {
 2600                let open_by_project_path = open_by_project_path.await;
 2601                let mut navigated = false;
 2602                match open_by_project_path
 2603                    .with_context(|| format!("Navigating to {project_path:?}"))
 2604                {
 2605                    Ok((project_entry_id, build_item)) => {
 2606                        let prev_active_item_id = pane.update(cx, |pane, _| {
 2607                            pane.nav_history_mut().set_mode(mode);
 2608                            pane.active_item().map(|p| p.item_id())
 2609                        })?;
 2610
 2611                        pane.update_in(cx, |pane, window, cx| {
 2612                            let item = pane.open_item(
 2613                                project_entry_id,
 2614                                project_path,
 2615                                true,
 2616                                entry.is_preview,
 2617                                true,
 2618                                None,
 2619                                window, cx,
 2620                                build_item,
 2621                            );
 2622                            navigated |= Some(item.item_id()) != prev_active_item_id;
 2623                            pane.nav_history_mut().set_mode(NavigationMode::Normal);
 2624                            if let Some(data) = entry.data {
 2625                                navigated |= item.navigate(data, window, cx);
 2626                            }
 2627                        })?;
 2628                    }
 2629                    Err(open_by_project_path_e) => {
 2630                        // Fall back to opening by abs path, in case an external file was opened and closed,
 2631                        // and its worktree is now dropped
 2632                        if let Some(abs_path) = abs_path {
 2633                            let prev_active_item_id = pane.update(cx, |pane, _| {
 2634                                pane.nav_history_mut().set_mode(mode);
 2635                                pane.active_item().map(|p| p.item_id())
 2636                            })?;
 2637                            let open_by_abs_path = workspace.update_in(cx, |workspace, window, cx| {
 2638                                workspace.open_abs_path(abs_path.clone(), OpenOptions { visible: Some(OpenVisible::None), ..Default::default() }, window, cx)
 2639                            })?;
 2640                            match open_by_abs_path
 2641                                .await
 2642                                .with_context(|| format!("Navigating to {abs_path:?}"))
 2643                            {
 2644                                Ok(item) => {
 2645                                    pane.update_in(cx, |pane, window, cx| {
 2646                                        navigated |= Some(item.item_id()) != prev_active_item_id;
 2647                                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 2648                                        if let Some(data) = entry.data {
 2649                                            navigated |= item.navigate(data, window, cx);
 2650                                        }
 2651                                    })?;
 2652                                }
 2653                                Err(open_by_abs_path_e) => {
 2654                                    log::error!("Failed to navigate history: {open_by_project_path_e:#} and {open_by_abs_path_e:#}");
 2655                                }
 2656                            }
 2657                        }
 2658                    }
 2659                }
 2660
 2661                if !navigated {
 2662                    workspace
 2663                        .update_in(cx, |workspace, window, cx| {
 2664                            Self::navigate_history(workspace, pane, mode, window, cx)
 2665                        })?
 2666                        .await?;
 2667                }
 2668
 2669                Ok(())
 2670            })
 2671        } else {
 2672            Task::ready(Ok(()))
 2673        }
 2674    }
 2675
 2676    pub fn go_back(
 2677        &mut self,
 2678        pane: WeakEntity<Pane>,
 2679        window: &mut Window,
 2680        cx: &mut Context<Workspace>,
 2681    ) -> Task<Result<()>> {
 2682        self.navigate_history(pane, NavigationMode::GoingBack, window, cx)
 2683    }
 2684
 2685    pub fn go_forward(
 2686        &mut self,
 2687        pane: WeakEntity<Pane>,
 2688        window: &mut Window,
 2689        cx: &mut Context<Workspace>,
 2690    ) -> Task<Result<()>> {
 2691        self.navigate_history(pane, NavigationMode::GoingForward, window, cx)
 2692    }
 2693
 2694    pub fn reopen_closed_item(
 2695        &mut self,
 2696        window: &mut Window,
 2697        cx: &mut Context<Workspace>,
 2698    ) -> Task<Result<()>> {
 2699        self.navigate_history(
 2700            self.active_pane().downgrade(),
 2701            NavigationMode::ReopeningClosedItem,
 2702            window,
 2703            cx,
 2704        )
 2705    }
 2706
 2707    pub fn client(&self) -> &Arc<Client> {
 2708        &self.app_state.client
 2709    }
 2710
 2711    pub fn set_titlebar_item(&mut self, item: AnyView, _: &mut Window, cx: &mut Context<Self>) {
 2712        self.titlebar_item = Some(item);
 2713        cx.notify();
 2714    }
 2715
 2716    pub fn set_prompt_for_new_path(&mut self, prompt: PromptForNewPath) {
 2717        self.on_prompt_for_new_path = Some(prompt)
 2718    }
 2719
 2720    pub fn set_prompt_for_open_path(&mut self, prompt: PromptForOpenPath) {
 2721        self.on_prompt_for_open_path = Some(prompt)
 2722    }
 2723
 2724    pub fn set_terminal_provider(&mut self, provider: impl TerminalProvider + 'static) {
 2725        self.terminal_provider = Some(Box::new(provider));
 2726    }
 2727
 2728    pub fn set_debugger_provider(&mut self, provider: impl DebuggerProvider + 'static) {
 2729        self.debugger_provider = Some(Arc::new(provider));
 2730    }
 2731
 2732    pub fn debugger_provider(&self) -> Option<Arc<dyn DebuggerProvider>> {
 2733        self.debugger_provider.clone()
 2734    }
 2735
 2736    pub fn prompt_for_open_path(
 2737        &mut self,
 2738        path_prompt_options: PathPromptOptions,
 2739        lister: DirectoryLister,
 2740        window: &mut Window,
 2741        cx: &mut Context<Self>,
 2742    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2743        if !lister.is_local(cx) || !WorkspaceSettings::get_global(cx).use_system_path_prompts {
 2744            let prompt = self.on_prompt_for_open_path.take().unwrap();
 2745            let rx = prompt(self, lister, window, cx);
 2746            self.on_prompt_for_open_path = Some(prompt);
 2747            rx
 2748        } else {
 2749            let (tx, rx) = oneshot::channel();
 2750            let abs_path = cx.prompt_for_paths(path_prompt_options);
 2751
 2752            cx.spawn_in(window, async move |workspace, cx| {
 2753                let Ok(result) = abs_path.await else {
 2754                    return Ok(());
 2755                };
 2756
 2757                match result {
 2758                    Ok(result) => {
 2759                        tx.send(result).ok();
 2760                    }
 2761                    Err(err) => {
 2762                        let rx = workspace.update_in(cx, |workspace, window, cx| {
 2763                            workspace.show_portal_error(err.to_string(), cx);
 2764                            let prompt = workspace.on_prompt_for_open_path.take().unwrap();
 2765                            let rx = prompt(workspace, lister, window, cx);
 2766                            workspace.on_prompt_for_open_path = Some(prompt);
 2767                            rx
 2768                        })?;
 2769                        if let Ok(path) = rx.await {
 2770                            tx.send(path).ok();
 2771                        }
 2772                    }
 2773                };
 2774                anyhow::Ok(())
 2775            })
 2776            .detach();
 2777
 2778            rx
 2779        }
 2780    }
 2781
 2782    pub fn prompt_for_new_path(
 2783        &mut self,
 2784        lister: DirectoryLister,
 2785        suggested_name: Option<String>,
 2786        window: &mut Window,
 2787        cx: &mut Context<Self>,
 2788    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2789        if self.project.read(cx).is_via_collab()
 2790            || self.project.read(cx).is_via_remote_server()
 2791            || !WorkspaceSettings::get_global(cx).use_system_path_prompts
 2792        {
 2793            let prompt = self.on_prompt_for_new_path.take().unwrap();
 2794            let rx = prompt(self, lister, suggested_name, window, cx);
 2795            self.on_prompt_for_new_path = Some(prompt);
 2796            return rx;
 2797        }
 2798
 2799        let (tx, rx) = oneshot::channel();
 2800        cx.spawn_in(window, async move |workspace, cx| {
 2801            let abs_path = workspace.update(cx, |workspace, cx| {
 2802                let relative_to = workspace
 2803                    .most_recent_active_path(cx)
 2804                    .and_then(|p| p.parent().map(|p| p.to_path_buf()))
 2805                    .or_else(|| {
 2806                        let project = workspace.project.read(cx);
 2807                        project.visible_worktrees(cx).find_map(|worktree| {
 2808                            Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
 2809                        })
 2810                    })
 2811                    .or_else(std::env::home_dir)
 2812                    .unwrap_or_else(|| PathBuf::from(""));
 2813                cx.prompt_for_new_path(&relative_to, suggested_name.as_deref())
 2814            })?;
 2815            let abs_path = match abs_path.await? {
 2816                Ok(path) => path,
 2817                Err(err) => {
 2818                    let rx = workspace.update_in(cx, |workspace, window, cx| {
 2819                        workspace.show_portal_error(err.to_string(), cx);
 2820
 2821                        let prompt = workspace.on_prompt_for_new_path.take().unwrap();
 2822                        let rx = prompt(workspace, lister, suggested_name, window, cx);
 2823                        workspace.on_prompt_for_new_path = Some(prompt);
 2824                        rx
 2825                    })?;
 2826                    if let Ok(path) = rx.await {
 2827                        tx.send(path).ok();
 2828                    }
 2829                    return anyhow::Ok(());
 2830                }
 2831            };
 2832
 2833            tx.send(abs_path.map(|path| vec![path])).ok();
 2834            anyhow::Ok(())
 2835        })
 2836        .detach();
 2837
 2838        rx
 2839    }
 2840
 2841    pub fn titlebar_item(&self) -> Option<AnyView> {
 2842        self.titlebar_item.clone()
 2843    }
 2844
 2845    /// Returns the worktree override set by the user (e.g., via the project dropdown).
 2846    /// When set, git-related operations should use this worktree instead of deriving
 2847    /// the active worktree from the focused file.
 2848    pub fn active_worktree_override(&self) -> Option<WorktreeId> {
 2849        self.active_worktree_override
 2850    }
 2851
 2852    pub fn set_active_worktree_override(
 2853        &mut self,
 2854        worktree_id: Option<WorktreeId>,
 2855        cx: &mut Context<Self>,
 2856    ) {
 2857        self.active_worktree_override = worktree_id;
 2858        cx.notify();
 2859    }
 2860
 2861    pub fn clear_active_worktree_override(&mut self, cx: &mut Context<Self>) {
 2862        self.active_worktree_override = None;
 2863        cx.notify();
 2864    }
 2865
 2866    /// Call the given callback with a workspace whose project is local or remote via WSL (allowing host access).
 2867    ///
 2868    /// If the given workspace has a local project, then it will be passed
 2869    /// to the callback. Otherwise, a new empty window will be created.
 2870    pub fn with_local_workspace<T, F>(
 2871        &mut self,
 2872        window: &mut Window,
 2873        cx: &mut Context<Self>,
 2874        callback: F,
 2875    ) -> Task<Result<T>>
 2876    where
 2877        T: 'static,
 2878        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
 2879    {
 2880        if self.project.read(cx).is_local() {
 2881            Task::ready(Ok(callback(self, window, cx)))
 2882        } else {
 2883            let env = self.project.read(cx).cli_environment(cx);
 2884            let task = Self::new_local(
 2885                Vec::new(),
 2886                self.app_state.clone(),
 2887                None,
 2888                env,
 2889                None,
 2890                true,
 2891                cx,
 2892            );
 2893            cx.spawn_in(window, async move |_vh, cx| {
 2894                let OpenResult {
 2895                    window: multi_workspace_window,
 2896                    ..
 2897                } = task.await?;
 2898                multi_workspace_window.update(cx, |multi_workspace, window, cx| {
 2899                    let workspace = multi_workspace.workspace().clone();
 2900                    workspace.update(cx, |workspace, cx| callback(workspace, window, cx))
 2901                })
 2902            })
 2903        }
 2904    }
 2905
 2906    /// Call the given callback with a workspace whose project is local or remote via WSL (allowing host access).
 2907    ///
 2908    /// If the given workspace has a local project, then it will be passed
 2909    /// to the callback. Otherwise, a new empty window will be created.
 2910    pub fn with_local_or_wsl_workspace<T, F>(
 2911        &mut self,
 2912        window: &mut Window,
 2913        cx: &mut Context<Self>,
 2914        callback: F,
 2915    ) -> Task<Result<T>>
 2916    where
 2917        T: 'static,
 2918        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
 2919    {
 2920        let project = self.project.read(cx);
 2921        if project.is_local() || project.is_via_wsl_with_host_interop(cx) {
 2922            Task::ready(Ok(callback(self, window, cx)))
 2923        } else {
 2924            let env = self.project.read(cx).cli_environment(cx);
 2925            let task = Self::new_local(
 2926                Vec::new(),
 2927                self.app_state.clone(),
 2928                None,
 2929                env,
 2930                None,
 2931                true,
 2932                cx,
 2933            );
 2934            cx.spawn_in(window, async move |_vh, cx| {
 2935                let OpenResult {
 2936                    window: multi_workspace_window,
 2937                    ..
 2938                } = task.await?;
 2939                multi_workspace_window.update(cx, |multi_workspace, window, cx| {
 2940                    let workspace = multi_workspace.workspace().clone();
 2941                    workspace.update(cx, |workspace, cx| callback(workspace, window, cx))
 2942                })
 2943            })
 2944        }
 2945    }
 2946
 2947    pub fn worktrees<'a>(&self, cx: &'a App) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2948        self.project.read(cx).worktrees(cx)
 2949    }
 2950
 2951    pub fn visible_worktrees<'a>(
 2952        &self,
 2953        cx: &'a App,
 2954    ) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2955        self.project.read(cx).visible_worktrees(cx)
 2956    }
 2957
 2958    #[cfg(any(test, feature = "test-support"))]
 2959    pub fn worktree_scans_complete(&self, cx: &App) -> impl Future<Output = ()> + 'static + use<> {
 2960        let futures = self
 2961            .worktrees(cx)
 2962            .filter_map(|worktree| worktree.read(cx).as_local())
 2963            .map(|worktree| worktree.scan_complete())
 2964            .collect::<Vec<_>>();
 2965        async move {
 2966            for future in futures {
 2967                future.await;
 2968            }
 2969        }
 2970    }
 2971
 2972    pub fn close_global(cx: &mut App) {
 2973        cx.defer(|cx| {
 2974            cx.windows().iter().find(|window| {
 2975                window
 2976                    .update(cx, |_, window, _| {
 2977                        if window.is_window_active() {
 2978                            //This can only get called when the window's project connection has been lost
 2979                            //so we don't need to prompt the user for anything and instead just close the window
 2980                            window.remove_window();
 2981                            true
 2982                        } else {
 2983                            false
 2984                        }
 2985                    })
 2986                    .unwrap_or(false)
 2987            });
 2988        });
 2989    }
 2990
 2991    pub fn move_focused_panel_to_next_position(
 2992        &mut self,
 2993        _: &MoveFocusedPanelToNextPosition,
 2994        window: &mut Window,
 2995        cx: &mut Context<Self>,
 2996    ) {
 2997        let docks = self.all_docks();
 2998        let active_dock = docks
 2999            .into_iter()
 3000            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 3001
 3002        if let Some(dock) = active_dock {
 3003            dock.update(cx, |dock, cx| {
 3004                let active_panel = dock
 3005                    .active_panel()
 3006                    .filter(|panel| panel.panel_focus_handle(cx).contains_focused(window, cx));
 3007
 3008                if let Some(panel) = active_panel {
 3009                    panel.move_to_next_position(window, cx);
 3010                }
 3011            })
 3012        }
 3013    }
 3014
 3015    pub fn prepare_to_close(
 3016        &mut self,
 3017        close_intent: CloseIntent,
 3018        window: &mut Window,
 3019        cx: &mut Context<Self>,
 3020    ) -> Task<Result<bool>> {
 3021        let active_call = self.active_global_call();
 3022
 3023        cx.spawn_in(window, async move |this, cx| {
 3024            this.update(cx, |this, _| {
 3025                if close_intent == CloseIntent::CloseWindow {
 3026                    this.removing = true;
 3027                }
 3028            })?;
 3029
 3030            let workspace_count = cx.update(|_window, cx| {
 3031                cx.windows()
 3032                    .iter()
 3033                    .filter(|window| window.downcast::<MultiWorkspace>().is_some())
 3034                    .count()
 3035            })?;
 3036
 3037            #[cfg(target_os = "macos")]
 3038            let save_last_workspace = false;
 3039
 3040            // On Linux and Windows, closing the last window should restore the last workspace.
 3041            #[cfg(not(target_os = "macos"))]
 3042            let save_last_workspace = {
 3043                let remaining_workspaces = cx.update(|_window, cx| {
 3044                    cx.windows()
 3045                        .iter()
 3046                        .filter_map(|window| window.downcast::<MultiWorkspace>())
 3047                        .filter_map(|multi_workspace| {
 3048                            multi_workspace
 3049                                .update(cx, |multi_workspace, _, cx| {
 3050                                    multi_workspace.workspace().read(cx).removing
 3051                                })
 3052                                .ok()
 3053                        })
 3054                        .filter(|removing| !removing)
 3055                        .count()
 3056                })?;
 3057
 3058                close_intent != CloseIntent::ReplaceWindow && remaining_workspaces == 0
 3059            };
 3060
 3061            if let Some(active_call) = active_call
 3062                && workspace_count == 1
 3063                && cx
 3064                    .update(|_window, cx| active_call.0.is_in_room(cx))
 3065                    .unwrap_or(false)
 3066            {
 3067                if close_intent == CloseIntent::CloseWindow {
 3068                    this.update(cx, |_, cx| cx.emit(Event::Activate))?;
 3069                    let answer = cx.update(|window, cx| {
 3070                        window.prompt(
 3071                            PromptLevel::Warning,
 3072                            "Do you want to leave the current call?",
 3073                            None,
 3074                            &["Close window and hang up", "Cancel"],
 3075                            cx,
 3076                        )
 3077                    })?;
 3078
 3079                    if answer.await.log_err() == Some(1) {
 3080                        return anyhow::Ok(false);
 3081                    } else {
 3082                        if let Ok(task) = cx.update(|_window, cx| active_call.0.hang_up(cx)) {
 3083                            task.await.log_err();
 3084                        }
 3085                    }
 3086                }
 3087                if close_intent == CloseIntent::ReplaceWindow {
 3088                    _ = cx.update(|_window, cx| {
 3089                        let multi_workspace = cx
 3090                            .windows()
 3091                            .iter()
 3092                            .filter_map(|window| window.downcast::<MultiWorkspace>())
 3093                            .next()
 3094                            .unwrap();
 3095                        let project = multi_workspace
 3096                            .read(cx)?
 3097                            .workspace()
 3098                            .read(cx)
 3099                            .project
 3100                            .clone();
 3101                        if project.read(cx).is_shared() {
 3102                            active_call.0.unshare_project(project, cx)?;
 3103                        }
 3104                        Ok::<_, anyhow::Error>(())
 3105                    });
 3106                }
 3107            }
 3108
 3109            let save_result = this
 3110                .update_in(cx, |this, window, cx| {
 3111                    this.save_all_internal(SaveIntent::Close, window, cx)
 3112                })?
 3113                .await;
 3114
 3115            // If we're not quitting, but closing, we remove the workspace from
 3116            // the current session.
 3117            if close_intent != CloseIntent::Quit
 3118                && !save_last_workspace
 3119                && save_result.as_ref().is_ok_and(|&res| res)
 3120            {
 3121                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))?
 3122                    .await;
 3123            }
 3124
 3125            save_result
 3126        })
 3127    }
 3128
 3129    fn save_all(&mut self, action: &SaveAll, window: &mut Window, cx: &mut Context<Self>) {
 3130        self.save_all_internal(
 3131            action.save_intent.unwrap_or(SaveIntent::SaveAll),
 3132            window,
 3133            cx,
 3134        )
 3135        .detach_and_log_err(cx);
 3136    }
 3137
 3138    fn send_keystrokes(
 3139        &mut self,
 3140        action: &SendKeystrokes,
 3141        window: &mut Window,
 3142        cx: &mut Context<Self>,
 3143    ) {
 3144        let keystrokes: Vec<Keystroke> = action
 3145            .0
 3146            .split(' ')
 3147            .flat_map(|k| Keystroke::parse(k).log_err())
 3148            .map(|k| {
 3149                cx.keyboard_mapper()
 3150                    .map_key_equivalent(k, false)
 3151                    .inner()
 3152                    .clone()
 3153            })
 3154            .collect();
 3155        let _ = self.send_keystrokes_impl(keystrokes, window, cx);
 3156    }
 3157
 3158    pub fn send_keystrokes_impl(
 3159        &mut self,
 3160        keystrokes: Vec<Keystroke>,
 3161        window: &mut Window,
 3162        cx: &mut Context<Self>,
 3163    ) -> Shared<Task<()>> {
 3164        let mut state = self.dispatching_keystrokes.borrow_mut();
 3165        if !state.dispatched.insert(keystrokes.clone()) {
 3166            cx.propagate();
 3167            return state.task.clone().unwrap();
 3168        }
 3169
 3170        state.queue.extend(keystrokes);
 3171
 3172        let keystrokes = self.dispatching_keystrokes.clone();
 3173        if state.task.is_none() {
 3174            state.task = Some(
 3175                window
 3176                    .spawn(cx, async move |cx| {
 3177                        // limit to 100 keystrokes to avoid infinite recursion.
 3178                        for _ in 0..100 {
 3179                            let keystroke = {
 3180                                let mut state = keystrokes.borrow_mut();
 3181                                let Some(keystroke) = state.queue.pop_front() else {
 3182                                    state.dispatched.clear();
 3183                                    state.task.take();
 3184                                    return;
 3185                                };
 3186                                keystroke
 3187                            };
 3188                            cx.update(|window, cx| {
 3189                                let focused = window.focused(cx);
 3190                                window.dispatch_keystroke(keystroke.clone(), cx);
 3191                                if window.focused(cx) != focused {
 3192                                    // dispatch_keystroke may cause the focus to change.
 3193                                    // draw's side effect is to schedule the FocusChanged events in the current flush effect cycle
 3194                                    // And we need that to happen before the next keystroke to keep vim mode happy...
 3195                                    // (Note that the tests always do this implicitly, so you must manually test with something like:
 3196                                    //   "bindings": { "g z": ["workspace::SendKeystrokes", ": j <enter> u"]}
 3197                                    // )
 3198                                    window.draw(cx).clear();
 3199                                }
 3200                            })
 3201                            .ok();
 3202
 3203                            // Yield between synthetic keystrokes so deferred focus and
 3204                            // other effects can settle before dispatching the next key.
 3205                            yield_now().await;
 3206                        }
 3207
 3208                        *keystrokes.borrow_mut() = Default::default();
 3209                        log::error!("over 100 keystrokes passed to send_keystrokes");
 3210                    })
 3211                    .shared(),
 3212            );
 3213        }
 3214        state.task.clone().unwrap()
 3215    }
 3216
 3217    fn save_all_internal(
 3218        &mut self,
 3219        mut save_intent: SaveIntent,
 3220        window: &mut Window,
 3221        cx: &mut Context<Self>,
 3222    ) -> Task<Result<bool>> {
 3223        if self.project.read(cx).is_disconnected(cx) {
 3224            return Task::ready(Ok(true));
 3225        }
 3226        let dirty_items = self
 3227            .panes
 3228            .iter()
 3229            .flat_map(|pane| {
 3230                pane.read(cx).items().filter_map(|item| {
 3231                    if item.is_dirty(cx) {
 3232                        item.tab_content_text(0, cx);
 3233                        Some((pane.downgrade(), item.boxed_clone()))
 3234                    } else {
 3235                        None
 3236                    }
 3237                })
 3238            })
 3239            .collect::<Vec<_>>();
 3240
 3241        let project = self.project.clone();
 3242        cx.spawn_in(window, async move |workspace, cx| {
 3243            let dirty_items = if save_intent == SaveIntent::Close && !dirty_items.is_empty() {
 3244                let (serialize_tasks, remaining_dirty_items) =
 3245                    workspace.update_in(cx, |workspace, window, cx| {
 3246                        let mut remaining_dirty_items = Vec::new();
 3247                        let mut serialize_tasks = Vec::new();
 3248                        for (pane, item) in dirty_items {
 3249                            if let Some(task) = item
 3250                                .to_serializable_item_handle(cx)
 3251                                .and_then(|handle| handle.serialize(workspace, true, window, cx))
 3252                            {
 3253                                serialize_tasks.push(task);
 3254                            } else {
 3255                                remaining_dirty_items.push((pane, item));
 3256                            }
 3257                        }
 3258                        (serialize_tasks, remaining_dirty_items)
 3259                    })?;
 3260
 3261                futures::future::try_join_all(serialize_tasks).await?;
 3262
 3263                if !remaining_dirty_items.is_empty() {
 3264                    workspace.update(cx, |_, cx| cx.emit(Event::Activate))?;
 3265                }
 3266
 3267                if remaining_dirty_items.len() > 1 {
 3268                    let answer = workspace.update_in(cx, |_, window, cx| {
 3269                        let detail = Pane::file_names_for_prompt(
 3270                            &mut remaining_dirty_items.iter().map(|(_, handle)| handle),
 3271                            cx,
 3272                        );
 3273                        window.prompt(
 3274                            PromptLevel::Warning,
 3275                            "Do you want to save all changes in the following files?",
 3276                            Some(&detail),
 3277                            &["Save all", "Discard all", "Cancel"],
 3278                            cx,
 3279                        )
 3280                    })?;
 3281                    match answer.await.log_err() {
 3282                        Some(0) => save_intent = SaveIntent::SaveAll,
 3283                        Some(1) => save_intent = SaveIntent::Skip,
 3284                        Some(2) => return Ok(false),
 3285                        _ => {}
 3286                    }
 3287                }
 3288
 3289                remaining_dirty_items
 3290            } else {
 3291                dirty_items
 3292            };
 3293
 3294            for (pane, item) in dirty_items {
 3295                let (singleton, project_entry_ids) = cx.update(|_, cx| {
 3296                    (
 3297                        item.buffer_kind(cx) == ItemBufferKind::Singleton,
 3298                        item.project_entry_ids(cx),
 3299                    )
 3300                })?;
 3301                if (singleton || !project_entry_ids.is_empty())
 3302                    && !Pane::save_item(project.clone(), &pane, &*item, save_intent, cx).await?
 3303                {
 3304                    return Ok(false);
 3305                }
 3306            }
 3307            Ok(true)
 3308        })
 3309    }
 3310
 3311    pub fn open_workspace_for_paths(
 3312        &mut self,
 3313        replace_current_window: bool,
 3314        paths: Vec<PathBuf>,
 3315        window: &mut Window,
 3316        cx: &mut Context<Self>,
 3317    ) -> Task<Result<Entity<Workspace>>> {
 3318        let window_handle = window.window_handle().downcast::<MultiWorkspace>();
 3319        let is_remote = self.project.read(cx).is_via_collab();
 3320        let has_worktree = self.project.read(cx).worktrees(cx).next().is_some();
 3321        let has_dirty_items = self.items(cx).any(|item| item.is_dirty(cx));
 3322
 3323        let window_to_replace = if replace_current_window {
 3324            window_handle
 3325        } else if is_remote || has_worktree || has_dirty_items {
 3326            None
 3327        } else {
 3328            window_handle
 3329        };
 3330        let app_state = self.app_state.clone();
 3331
 3332        cx.spawn(async move |_, cx| {
 3333            let OpenResult { workspace, .. } = cx
 3334                .update(|cx| {
 3335                    open_paths(
 3336                        &paths,
 3337                        app_state,
 3338                        OpenOptions {
 3339                            replace_window: window_to_replace,
 3340                            ..Default::default()
 3341                        },
 3342                        cx,
 3343                    )
 3344                })
 3345                .await?;
 3346            Ok(workspace)
 3347        })
 3348    }
 3349
 3350    #[allow(clippy::type_complexity)]
 3351    pub fn open_paths(
 3352        &mut self,
 3353        mut abs_paths: Vec<PathBuf>,
 3354        options: OpenOptions,
 3355        pane: Option<WeakEntity<Pane>>,
 3356        window: &mut Window,
 3357        cx: &mut Context<Self>,
 3358    ) -> Task<Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>> {
 3359        let fs = self.app_state.fs.clone();
 3360
 3361        let caller_ordered_abs_paths = abs_paths.clone();
 3362
 3363        // Sort the paths to ensure we add worktrees for parents before their children.
 3364        abs_paths.sort_unstable();
 3365        cx.spawn_in(window, async move |this, cx| {
 3366            let mut tasks = Vec::with_capacity(abs_paths.len());
 3367
 3368            for abs_path in &abs_paths {
 3369                let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
 3370                    OpenVisible::All => Some(true),
 3371                    OpenVisible::None => Some(false),
 3372                    OpenVisible::OnlyFiles => match fs.metadata(abs_path).await.log_err() {
 3373                        Some(Some(metadata)) => Some(!metadata.is_dir),
 3374                        Some(None) => Some(true),
 3375                        None => None,
 3376                    },
 3377                    OpenVisible::OnlyDirectories => match fs.metadata(abs_path).await.log_err() {
 3378                        Some(Some(metadata)) => Some(metadata.is_dir),
 3379                        Some(None) => Some(false),
 3380                        None => None,
 3381                    },
 3382                };
 3383                let project_path = match visible {
 3384                    Some(visible) => match this
 3385                        .update(cx, |this, cx| {
 3386                            Workspace::project_path_for_path(
 3387                                this.project.clone(),
 3388                                abs_path,
 3389                                visible,
 3390                                cx,
 3391                            )
 3392                        })
 3393                        .log_err()
 3394                    {
 3395                        Some(project_path) => project_path.await.log_err(),
 3396                        None => None,
 3397                    },
 3398                    None => None,
 3399                };
 3400
 3401                let this = this.clone();
 3402                let abs_path: Arc<Path> = SanitizedPath::new(&abs_path).as_path().into();
 3403                let fs = fs.clone();
 3404                let pane = pane.clone();
 3405                let task = cx.spawn(async move |cx| {
 3406                    let (_worktree, project_path) = project_path?;
 3407                    if fs.is_dir(&abs_path).await {
 3408                        // Opening a directory should not race to update the active entry.
 3409                        // We'll select/reveal a deterministic final entry after all paths finish opening.
 3410                        None
 3411                    } else {
 3412                        Some(
 3413                            this.update_in(cx, |this, window, cx| {
 3414                                this.open_path(
 3415                                    project_path,
 3416                                    pane,
 3417                                    options.focus.unwrap_or(true),
 3418                                    window,
 3419                                    cx,
 3420                                )
 3421                            })
 3422                            .ok()?
 3423                            .await,
 3424                        )
 3425                    }
 3426                });
 3427                tasks.push(task);
 3428            }
 3429
 3430            let results = futures::future::join_all(tasks).await;
 3431
 3432            // Determine the winner using the fake/abstract FS metadata, not `Path::is_dir`.
 3433            let mut winner: Option<(PathBuf, bool)> = None;
 3434            for abs_path in caller_ordered_abs_paths.into_iter().rev() {
 3435                if let Some(Some(metadata)) = fs.metadata(&abs_path).await.log_err() {
 3436                    if !metadata.is_dir {
 3437                        winner = Some((abs_path, false));
 3438                        break;
 3439                    }
 3440                    if winner.is_none() {
 3441                        winner = Some((abs_path, true));
 3442                    }
 3443                } else if winner.is_none() {
 3444                    winner = Some((abs_path, false));
 3445                }
 3446            }
 3447
 3448            // Compute the winner entry id on the foreground thread and emit once, after all
 3449            // paths finish opening. This avoids races between concurrently-opening paths
 3450            // (directories in particular) and makes the resulting project panel selection
 3451            // deterministic.
 3452            if let Some((winner_abs_path, winner_is_dir)) = winner {
 3453                'emit_winner: {
 3454                    let winner_abs_path: Arc<Path> =
 3455                        SanitizedPath::new(&winner_abs_path).as_path().into();
 3456
 3457                    let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
 3458                        OpenVisible::All => true,
 3459                        OpenVisible::None => false,
 3460                        OpenVisible::OnlyFiles => !winner_is_dir,
 3461                        OpenVisible::OnlyDirectories => winner_is_dir,
 3462                    };
 3463
 3464                    let Some(worktree_task) = this
 3465                        .update(cx, |workspace, cx| {
 3466                            workspace.project.update(cx, |project, cx| {
 3467                                project.find_or_create_worktree(
 3468                                    winner_abs_path.as_ref(),
 3469                                    visible,
 3470                                    cx,
 3471                                )
 3472                            })
 3473                        })
 3474                        .ok()
 3475                    else {
 3476                        break 'emit_winner;
 3477                    };
 3478
 3479                    let Ok((worktree, _)) = worktree_task.await else {
 3480                        break 'emit_winner;
 3481                    };
 3482
 3483                    let Ok(Some(entry_id)) = this.update(cx, |_, cx| {
 3484                        let worktree = worktree.read(cx);
 3485                        let worktree_abs_path = worktree.abs_path();
 3486                        let entry = if winner_abs_path.as_ref() == worktree_abs_path.as_ref() {
 3487                            worktree.root_entry()
 3488                        } else {
 3489                            winner_abs_path
 3490                                .strip_prefix(worktree_abs_path.as_ref())
 3491                                .ok()
 3492                                .and_then(|relative_path| {
 3493                                    let relative_path =
 3494                                        RelPath::new(relative_path, PathStyle::local())
 3495                                            .log_err()?;
 3496                                    worktree.entry_for_path(&relative_path)
 3497                                })
 3498                        }?;
 3499                        Some(entry.id)
 3500                    }) else {
 3501                        break 'emit_winner;
 3502                    };
 3503
 3504                    this.update(cx, |workspace, cx| {
 3505                        workspace.project.update(cx, |_, cx| {
 3506                            cx.emit(project::Event::ActiveEntryChanged(Some(entry_id)));
 3507                        });
 3508                    })
 3509                    .ok();
 3510                }
 3511            }
 3512
 3513            results
 3514        })
 3515    }
 3516
 3517    pub fn open_resolved_path(
 3518        &mut self,
 3519        path: ResolvedPath,
 3520        window: &mut Window,
 3521        cx: &mut Context<Self>,
 3522    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3523        match path {
 3524            ResolvedPath::ProjectPath { project_path, .. } => {
 3525                self.open_path(project_path, None, true, window, cx)
 3526            }
 3527            ResolvedPath::AbsPath { path, .. } => self.open_abs_path(
 3528                PathBuf::from(path),
 3529                OpenOptions {
 3530                    visible: Some(OpenVisible::None),
 3531                    ..Default::default()
 3532                },
 3533                window,
 3534                cx,
 3535            ),
 3536        }
 3537    }
 3538
 3539    pub fn absolute_path_of_worktree(
 3540        &self,
 3541        worktree_id: WorktreeId,
 3542        cx: &mut Context<Self>,
 3543    ) -> Option<PathBuf> {
 3544        self.project
 3545            .read(cx)
 3546            .worktree_for_id(worktree_id, cx)
 3547            // TODO: use `abs_path` or `root_dir`
 3548            .map(|wt| wt.read(cx).abs_path().as_ref().to_path_buf())
 3549    }
 3550
 3551    pub fn add_folder_to_project(
 3552        &mut self,
 3553        _: &AddFolderToProject,
 3554        window: &mut Window,
 3555        cx: &mut Context<Self>,
 3556    ) {
 3557        let project = self.project.read(cx);
 3558        if project.is_via_collab() {
 3559            self.show_error(
 3560                &anyhow!("You cannot add folders to someone else's project"),
 3561                cx,
 3562            );
 3563            return;
 3564        }
 3565        let paths = self.prompt_for_open_path(
 3566            PathPromptOptions {
 3567                files: false,
 3568                directories: true,
 3569                multiple: true,
 3570                prompt: None,
 3571            },
 3572            DirectoryLister::Project(self.project.clone()),
 3573            window,
 3574            cx,
 3575        );
 3576        cx.spawn_in(window, async move |this, cx| {
 3577            if let Some(paths) = paths.await.log_err().flatten() {
 3578                let results = this
 3579                    .update_in(cx, |this, window, cx| {
 3580                        this.open_paths(
 3581                            paths,
 3582                            OpenOptions {
 3583                                visible: Some(OpenVisible::All),
 3584                                ..Default::default()
 3585                            },
 3586                            None,
 3587                            window,
 3588                            cx,
 3589                        )
 3590                    })?
 3591                    .await;
 3592                for result in results.into_iter().flatten() {
 3593                    result.log_err();
 3594                }
 3595            }
 3596            anyhow::Ok(())
 3597        })
 3598        .detach_and_log_err(cx);
 3599    }
 3600
 3601    pub fn project_path_for_path(
 3602        project: Entity<Project>,
 3603        abs_path: &Path,
 3604        visible: bool,
 3605        cx: &mut App,
 3606    ) -> Task<Result<(Entity<Worktree>, ProjectPath)>> {
 3607        let entry = project.update(cx, |project, cx| {
 3608            project.find_or_create_worktree(abs_path, visible, cx)
 3609        });
 3610        cx.spawn(async move |cx| {
 3611            let (worktree, path) = entry.await?;
 3612            let worktree_id = worktree.read_with(cx, |t, _| t.id());
 3613            Ok((worktree, ProjectPath { worktree_id, path }))
 3614        })
 3615    }
 3616
 3617    pub fn items<'a>(&'a self, cx: &'a App) -> impl 'a + Iterator<Item = &'a Box<dyn ItemHandle>> {
 3618        self.panes.iter().flat_map(|pane| pane.read(cx).items())
 3619    }
 3620
 3621    pub fn item_of_type<T: Item>(&self, cx: &App) -> Option<Entity<T>> {
 3622        self.items_of_type(cx).max_by_key(|item| item.item_id())
 3623    }
 3624
 3625    pub fn items_of_type<'a, T: Item>(
 3626        &'a self,
 3627        cx: &'a App,
 3628    ) -> impl 'a + Iterator<Item = Entity<T>> {
 3629        self.panes
 3630            .iter()
 3631            .flat_map(|pane| pane.read(cx).items_of_type())
 3632    }
 3633
 3634    pub fn active_item(&self, cx: &App) -> Option<Box<dyn ItemHandle>> {
 3635        self.active_pane().read(cx).active_item()
 3636    }
 3637
 3638    pub fn active_item_as<I: 'static>(&self, cx: &App) -> Option<Entity<I>> {
 3639        let item = self.active_item(cx)?;
 3640        item.to_any_view().downcast::<I>().ok()
 3641    }
 3642
 3643    fn active_project_path(&self, cx: &App) -> Option<ProjectPath> {
 3644        self.active_item(cx).and_then(|item| item.project_path(cx))
 3645    }
 3646
 3647    pub fn most_recent_active_path(&self, cx: &App) -> Option<PathBuf> {
 3648        self.recent_navigation_history_iter(cx)
 3649            .filter_map(|(path, abs_path)| {
 3650                let worktree = self
 3651                    .project
 3652                    .read(cx)
 3653                    .worktree_for_id(path.worktree_id, cx)?;
 3654                if worktree.read(cx).is_visible() {
 3655                    abs_path
 3656                } else {
 3657                    None
 3658                }
 3659            })
 3660            .next()
 3661    }
 3662
 3663    pub fn save_active_item(
 3664        &mut self,
 3665        save_intent: SaveIntent,
 3666        window: &mut Window,
 3667        cx: &mut App,
 3668    ) -> Task<Result<()>> {
 3669        let project = self.project.clone();
 3670        let pane = self.active_pane();
 3671        let item = pane.read(cx).active_item();
 3672        let pane = pane.downgrade();
 3673
 3674        window.spawn(cx, async move |cx| {
 3675            if let Some(item) = item {
 3676                Pane::save_item(project, &pane, item.as_ref(), save_intent, cx)
 3677                    .await
 3678                    .map(|_| ())
 3679            } else {
 3680                Ok(())
 3681            }
 3682        })
 3683    }
 3684
 3685    pub fn close_inactive_items_and_panes(
 3686        &mut self,
 3687        action: &CloseInactiveTabsAndPanes,
 3688        window: &mut Window,
 3689        cx: &mut Context<Self>,
 3690    ) {
 3691        if let Some(task) = self.close_all_internal(
 3692            true,
 3693            action.save_intent.unwrap_or(SaveIntent::Close),
 3694            window,
 3695            cx,
 3696        ) {
 3697            task.detach_and_log_err(cx)
 3698        }
 3699    }
 3700
 3701    pub fn close_all_items_and_panes(
 3702        &mut self,
 3703        action: &CloseAllItemsAndPanes,
 3704        window: &mut Window,
 3705        cx: &mut Context<Self>,
 3706    ) {
 3707        if let Some(task) = self.close_all_internal(
 3708            false,
 3709            action.save_intent.unwrap_or(SaveIntent::Close),
 3710            window,
 3711            cx,
 3712        ) {
 3713            task.detach_and_log_err(cx)
 3714        }
 3715    }
 3716
 3717    /// Closes the active item across all panes.
 3718    pub fn close_item_in_all_panes(
 3719        &mut self,
 3720        action: &CloseItemInAllPanes,
 3721        window: &mut Window,
 3722        cx: &mut Context<Self>,
 3723    ) {
 3724        let Some(active_item) = self.active_pane().read(cx).active_item() else {
 3725            return;
 3726        };
 3727
 3728        let save_intent = action.save_intent.unwrap_or(SaveIntent::Close);
 3729        let close_pinned = action.close_pinned;
 3730
 3731        if let Some(project_path) = active_item.project_path(cx) {
 3732            self.close_items_with_project_path(
 3733                &project_path,
 3734                save_intent,
 3735                close_pinned,
 3736                window,
 3737                cx,
 3738            );
 3739        } else if close_pinned || !self.active_pane().read(cx).is_active_item_pinned() {
 3740            let item_id = active_item.item_id();
 3741            self.active_pane().update(cx, |pane, cx| {
 3742                pane.close_item_by_id(item_id, save_intent, window, cx)
 3743                    .detach_and_log_err(cx);
 3744            });
 3745        }
 3746    }
 3747
 3748    /// Closes all items with the given project path across all panes.
 3749    pub fn close_items_with_project_path(
 3750        &mut self,
 3751        project_path: &ProjectPath,
 3752        save_intent: SaveIntent,
 3753        close_pinned: bool,
 3754        window: &mut Window,
 3755        cx: &mut Context<Self>,
 3756    ) {
 3757        let panes = self.panes().to_vec();
 3758        for pane in panes {
 3759            pane.update(cx, |pane, cx| {
 3760                pane.close_items_for_project_path(
 3761                    project_path,
 3762                    save_intent,
 3763                    close_pinned,
 3764                    window,
 3765                    cx,
 3766                )
 3767                .detach_and_log_err(cx);
 3768            });
 3769        }
 3770    }
 3771
 3772    fn close_all_internal(
 3773        &mut self,
 3774        retain_active_pane: bool,
 3775        save_intent: SaveIntent,
 3776        window: &mut Window,
 3777        cx: &mut Context<Self>,
 3778    ) -> Option<Task<Result<()>>> {
 3779        let current_pane = self.active_pane();
 3780
 3781        let mut tasks = Vec::new();
 3782
 3783        if retain_active_pane {
 3784            let current_pane_close = current_pane.update(cx, |pane, cx| {
 3785                pane.close_other_items(
 3786                    &CloseOtherItems {
 3787                        save_intent: None,
 3788                        close_pinned: false,
 3789                    },
 3790                    None,
 3791                    window,
 3792                    cx,
 3793                )
 3794            });
 3795
 3796            tasks.push(current_pane_close);
 3797        }
 3798
 3799        for pane in self.panes() {
 3800            if retain_active_pane && pane.entity_id() == current_pane.entity_id() {
 3801                continue;
 3802            }
 3803
 3804            let close_pane_items = pane.update(cx, |pane: &mut Pane, cx| {
 3805                pane.close_all_items(
 3806                    &CloseAllItems {
 3807                        save_intent: Some(save_intent),
 3808                        close_pinned: false,
 3809                    },
 3810                    window,
 3811                    cx,
 3812                )
 3813            });
 3814
 3815            tasks.push(close_pane_items)
 3816        }
 3817
 3818        if tasks.is_empty() {
 3819            None
 3820        } else {
 3821            Some(cx.spawn_in(window, async move |_, _| {
 3822                for task in tasks {
 3823                    task.await?
 3824                }
 3825                Ok(())
 3826            }))
 3827        }
 3828    }
 3829
 3830    pub fn is_dock_at_position_open(&self, position: DockPosition, cx: &mut Context<Self>) -> bool {
 3831        self.dock_at_position(position).read(cx).is_open()
 3832    }
 3833
 3834    pub fn toggle_dock(
 3835        &mut self,
 3836        dock_side: DockPosition,
 3837        window: &mut Window,
 3838        cx: &mut Context<Self>,
 3839    ) {
 3840        let mut focus_center = false;
 3841        let mut reveal_dock = false;
 3842
 3843        let other_is_zoomed = self.zoomed.is_some() && self.zoomed_position != Some(dock_side);
 3844        let was_visible = self.is_dock_at_position_open(dock_side, cx) && !other_is_zoomed;
 3845
 3846        if let Some(panel) = self.dock_at_position(dock_side).read(cx).active_panel() {
 3847            telemetry::event!(
 3848                "Panel Button Clicked",
 3849                name = panel.persistent_name(),
 3850                toggle_state = !was_visible
 3851            );
 3852        }
 3853        if was_visible {
 3854            self.save_open_dock_positions(cx);
 3855        }
 3856
 3857        let dock = self.dock_at_position(dock_side);
 3858        dock.update(cx, |dock, cx| {
 3859            dock.set_open(!was_visible, window, cx);
 3860
 3861            if dock.active_panel().is_none() {
 3862                let Some(panel_ix) = dock
 3863                    .first_enabled_panel_idx(cx)
 3864                    .log_with_level(log::Level::Info)
 3865                else {
 3866                    return;
 3867                };
 3868                dock.activate_panel(panel_ix, window, cx);
 3869            }
 3870
 3871            if let Some(active_panel) = dock.active_panel() {
 3872                if was_visible {
 3873                    if active_panel
 3874                        .panel_focus_handle(cx)
 3875                        .contains_focused(window, cx)
 3876                    {
 3877                        focus_center = true;
 3878                    }
 3879                } else {
 3880                    let focus_handle = &active_panel.panel_focus_handle(cx);
 3881                    window.focus(focus_handle, cx);
 3882                    reveal_dock = true;
 3883                }
 3884            }
 3885        });
 3886
 3887        if reveal_dock {
 3888            self.dismiss_zoomed_items_to_reveal(Some(dock_side), window, cx);
 3889        }
 3890
 3891        if focus_center {
 3892            self.active_pane
 3893                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx))
 3894        }
 3895
 3896        cx.notify();
 3897        self.serialize_workspace(window, cx);
 3898    }
 3899
 3900    fn active_dock(&self, window: &Window, cx: &Context<Self>) -> Option<&Entity<Dock>> {
 3901        self.all_docks().into_iter().find(|&dock| {
 3902            dock.read(cx).is_open() && dock.focus_handle(cx).contains_focused(window, cx)
 3903        })
 3904    }
 3905
 3906    fn close_active_dock(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
 3907        if let Some(dock) = self.active_dock(window, cx).cloned() {
 3908            self.save_open_dock_positions(cx);
 3909            dock.update(cx, |dock, cx| {
 3910                dock.set_open(false, window, cx);
 3911            });
 3912            return true;
 3913        }
 3914        false
 3915    }
 3916
 3917    pub fn close_all_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3918        self.save_open_dock_positions(cx);
 3919        for dock in self.all_docks() {
 3920            dock.update(cx, |dock, cx| {
 3921                dock.set_open(false, window, cx);
 3922            });
 3923        }
 3924
 3925        cx.focus_self(window);
 3926        cx.notify();
 3927        self.serialize_workspace(window, cx);
 3928    }
 3929
 3930    fn get_open_dock_positions(&self, cx: &Context<Self>) -> Vec<DockPosition> {
 3931        self.all_docks()
 3932            .into_iter()
 3933            .filter_map(|dock| {
 3934                let dock_ref = dock.read(cx);
 3935                if dock_ref.is_open() {
 3936                    Some(dock_ref.position())
 3937                } else {
 3938                    None
 3939                }
 3940            })
 3941            .collect()
 3942    }
 3943
 3944    /// Saves the positions of currently open docks.
 3945    ///
 3946    /// Updates `last_open_dock_positions` with positions of all currently open
 3947    /// docks, to later be restored by the 'Toggle All Docks' action.
 3948    fn save_open_dock_positions(&mut self, cx: &mut Context<Self>) {
 3949        let open_dock_positions = self.get_open_dock_positions(cx);
 3950        if !open_dock_positions.is_empty() {
 3951            self.last_open_dock_positions = open_dock_positions;
 3952        }
 3953    }
 3954
 3955    /// Toggles all docks between open and closed states.
 3956    ///
 3957    /// If any docks are open, closes all and remembers their positions. If all
 3958    /// docks are closed, restores the last remembered dock configuration.
 3959    fn toggle_all_docks(
 3960        &mut self,
 3961        _: &ToggleAllDocks,
 3962        window: &mut Window,
 3963        cx: &mut Context<Self>,
 3964    ) {
 3965        let open_dock_positions = self.get_open_dock_positions(cx);
 3966
 3967        if !open_dock_positions.is_empty() {
 3968            self.close_all_docks(window, cx);
 3969        } else if !self.last_open_dock_positions.is_empty() {
 3970            self.restore_last_open_docks(window, cx);
 3971        }
 3972    }
 3973
 3974    /// Reopens docks from the most recently remembered configuration.
 3975    ///
 3976    /// Opens all docks whose positions are stored in `last_open_dock_positions`
 3977    /// and clears the stored positions.
 3978    fn restore_last_open_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3979        let positions_to_open = std::mem::take(&mut self.last_open_dock_positions);
 3980
 3981        for position in positions_to_open {
 3982            let dock = self.dock_at_position(position);
 3983            dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
 3984        }
 3985
 3986        cx.focus_self(window);
 3987        cx.notify();
 3988        self.serialize_workspace(window, cx);
 3989    }
 3990
 3991    /// Transfer focus to the panel of the given type.
 3992    pub fn focus_panel<T: Panel>(
 3993        &mut self,
 3994        window: &mut Window,
 3995        cx: &mut Context<Self>,
 3996    ) -> Option<Entity<T>> {
 3997        let panel = self.focus_or_unfocus_panel::<T>(window, cx, &mut |_, _, _| true)?;
 3998        panel.to_any().downcast().ok()
 3999    }
 4000
 4001    /// Focus the panel of the given type if it isn't already focused. If it is
 4002    /// already focused, then transfer focus back to the workspace center.
 4003    /// When the `close_panel_on_toggle` setting is enabled, also closes the
 4004    /// panel when transferring focus back to the center.
 4005    pub fn toggle_panel_focus<T: Panel>(
 4006        &mut self,
 4007        window: &mut Window,
 4008        cx: &mut Context<Self>,
 4009    ) -> bool {
 4010        let mut did_focus_panel = false;
 4011        self.focus_or_unfocus_panel::<T>(window, cx, &mut |panel, window, cx| {
 4012            did_focus_panel = !panel.panel_focus_handle(cx).contains_focused(window, cx);
 4013            did_focus_panel
 4014        });
 4015
 4016        if !did_focus_panel && WorkspaceSettings::get_global(cx).close_panel_on_toggle {
 4017            self.close_panel::<T>(window, cx);
 4018        }
 4019
 4020        telemetry::event!(
 4021            "Panel Button Clicked",
 4022            name = T::persistent_name(),
 4023            toggle_state = did_focus_panel
 4024        );
 4025
 4026        did_focus_panel
 4027    }
 4028
 4029    pub fn focus_center_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4030        if let Some(item) = self.active_item(cx) {
 4031            item.item_focus_handle(cx).focus(window, cx);
 4032        } else {
 4033            log::error!("Could not find a focus target when switching focus to the center panes",);
 4034        }
 4035    }
 4036
 4037    pub fn activate_panel_for_proto_id(
 4038        &mut self,
 4039        panel_id: PanelId,
 4040        window: &mut Window,
 4041        cx: &mut Context<Self>,
 4042    ) -> Option<Arc<dyn PanelHandle>> {
 4043        let mut panel = None;
 4044        for dock in self.all_docks() {
 4045            if let Some(panel_index) = dock.read(cx).panel_index_for_proto_id(panel_id) {
 4046                panel = dock.update(cx, |dock, cx| {
 4047                    dock.activate_panel(panel_index, window, cx);
 4048                    dock.set_open(true, window, cx);
 4049                    dock.active_panel().cloned()
 4050                });
 4051                break;
 4052            }
 4053        }
 4054
 4055        if panel.is_some() {
 4056            cx.notify();
 4057            self.serialize_workspace(window, cx);
 4058        }
 4059
 4060        panel
 4061    }
 4062
 4063    /// Focus or unfocus the given panel type, depending on the given callback.
 4064    fn focus_or_unfocus_panel<T: Panel>(
 4065        &mut self,
 4066        window: &mut Window,
 4067        cx: &mut Context<Self>,
 4068        should_focus: &mut dyn FnMut(&dyn PanelHandle, &mut Window, &mut Context<Dock>) -> bool,
 4069    ) -> Option<Arc<dyn PanelHandle>> {
 4070        let mut result_panel = None;
 4071        let mut serialize = false;
 4072        for dock in self.all_docks() {
 4073            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 4074                let mut focus_center = false;
 4075                let panel = dock.update(cx, |dock, cx| {
 4076                    dock.activate_panel(panel_index, window, cx);
 4077
 4078                    let panel = dock.active_panel().cloned();
 4079                    if let Some(panel) = panel.as_ref() {
 4080                        if should_focus(&**panel, window, cx) {
 4081                            dock.set_open(true, window, cx);
 4082                            panel.panel_focus_handle(cx).focus(window, cx);
 4083                        } else {
 4084                            focus_center = true;
 4085                        }
 4086                    }
 4087                    panel
 4088                });
 4089
 4090                if focus_center {
 4091                    self.active_pane
 4092                        .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx))
 4093                }
 4094
 4095                result_panel = panel;
 4096                serialize = true;
 4097                break;
 4098            }
 4099        }
 4100
 4101        if serialize {
 4102            self.serialize_workspace(window, cx);
 4103        }
 4104
 4105        cx.notify();
 4106        result_panel
 4107    }
 4108
 4109    /// Open the panel of the given type
 4110    pub fn open_panel<T: Panel>(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4111        for dock in self.all_docks() {
 4112            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 4113                dock.update(cx, |dock, cx| {
 4114                    dock.activate_panel(panel_index, window, cx);
 4115                    dock.set_open(true, window, cx);
 4116                });
 4117            }
 4118        }
 4119    }
 4120
 4121    pub fn close_panel<T: Panel>(&self, window: &mut Window, cx: &mut Context<Self>) {
 4122        for dock in self.all_docks().iter() {
 4123            dock.update(cx, |dock, cx| {
 4124                if dock.panel::<T>().is_some() {
 4125                    dock.set_open(false, window, cx)
 4126                }
 4127            })
 4128        }
 4129    }
 4130
 4131    pub fn panel<T: Panel>(&self, cx: &App) -> Option<Entity<T>> {
 4132        self.all_docks()
 4133            .iter()
 4134            .find_map(|dock| dock.read(cx).panel::<T>())
 4135    }
 4136
 4137    fn dismiss_zoomed_items_to_reveal(
 4138        &mut self,
 4139        dock_to_reveal: Option<DockPosition>,
 4140        window: &mut Window,
 4141        cx: &mut Context<Self>,
 4142    ) {
 4143        // If a center pane is zoomed, unzoom it.
 4144        for pane in &self.panes {
 4145            if pane != &self.active_pane || dock_to_reveal.is_some() {
 4146                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 4147            }
 4148        }
 4149
 4150        // If another dock is zoomed, hide it.
 4151        let mut focus_center = false;
 4152        for dock in self.all_docks() {
 4153            dock.update(cx, |dock, cx| {
 4154                if Some(dock.position()) != dock_to_reveal
 4155                    && let Some(panel) = dock.active_panel()
 4156                    && panel.is_zoomed(window, cx)
 4157                {
 4158                    focus_center |= panel.panel_focus_handle(cx).contains_focused(window, cx);
 4159                    dock.set_open(false, window, cx);
 4160                }
 4161            });
 4162        }
 4163
 4164        if focus_center {
 4165            self.active_pane
 4166                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx))
 4167        }
 4168
 4169        if self.zoomed_position != dock_to_reveal {
 4170            self.zoomed = None;
 4171            self.zoomed_position = None;
 4172            cx.emit(Event::ZoomChanged);
 4173        }
 4174
 4175        cx.notify();
 4176    }
 4177
 4178    fn add_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 4179        let pane = cx.new(|cx| {
 4180            let mut pane = Pane::new(
 4181                self.weak_handle(),
 4182                self.project.clone(),
 4183                self.pane_history_timestamp.clone(),
 4184                None,
 4185                NewFile.boxed_clone(),
 4186                true,
 4187                window,
 4188                cx,
 4189            );
 4190            pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 4191            pane
 4192        });
 4193        cx.subscribe_in(&pane, window, Self::handle_pane_event)
 4194            .detach();
 4195        self.panes.push(pane.clone());
 4196
 4197        window.focus(&pane.focus_handle(cx), cx);
 4198
 4199        cx.emit(Event::PaneAdded(pane.clone()));
 4200        pane
 4201    }
 4202
 4203    pub fn add_item_to_center(
 4204        &mut self,
 4205        item: Box<dyn ItemHandle>,
 4206        window: &mut Window,
 4207        cx: &mut Context<Self>,
 4208    ) -> bool {
 4209        if let Some(center_pane) = self.last_active_center_pane.clone() {
 4210            if let Some(center_pane) = center_pane.upgrade() {
 4211                center_pane.update(cx, |pane, cx| {
 4212                    pane.add_item(item, true, true, None, window, cx)
 4213                });
 4214                true
 4215            } else {
 4216                false
 4217            }
 4218        } else {
 4219            false
 4220        }
 4221    }
 4222
 4223    pub fn add_item_to_active_pane(
 4224        &mut self,
 4225        item: Box<dyn ItemHandle>,
 4226        destination_index: Option<usize>,
 4227        focus_item: bool,
 4228        window: &mut Window,
 4229        cx: &mut App,
 4230    ) {
 4231        self.add_item(
 4232            self.active_pane.clone(),
 4233            item,
 4234            destination_index,
 4235            false,
 4236            focus_item,
 4237            window,
 4238            cx,
 4239        )
 4240    }
 4241
 4242    pub fn add_item(
 4243        &mut self,
 4244        pane: Entity<Pane>,
 4245        item: Box<dyn ItemHandle>,
 4246        destination_index: Option<usize>,
 4247        activate_pane: bool,
 4248        focus_item: bool,
 4249        window: &mut Window,
 4250        cx: &mut App,
 4251    ) {
 4252        pane.update(cx, |pane, cx| {
 4253            pane.add_item(
 4254                item,
 4255                activate_pane,
 4256                focus_item,
 4257                destination_index,
 4258                window,
 4259                cx,
 4260            )
 4261        });
 4262    }
 4263
 4264    pub fn split_item(
 4265        &mut self,
 4266        split_direction: SplitDirection,
 4267        item: Box<dyn ItemHandle>,
 4268        window: &mut Window,
 4269        cx: &mut Context<Self>,
 4270    ) {
 4271        let new_pane = self.split_pane(self.active_pane.clone(), split_direction, window, cx);
 4272        self.add_item(new_pane, item, None, true, true, window, cx);
 4273    }
 4274
 4275    pub fn open_abs_path(
 4276        &mut self,
 4277        abs_path: PathBuf,
 4278        options: OpenOptions,
 4279        window: &mut Window,
 4280        cx: &mut Context<Self>,
 4281    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4282        cx.spawn_in(window, async move |workspace, cx| {
 4283            let open_paths_task_result = workspace
 4284                .update_in(cx, |workspace, window, cx| {
 4285                    workspace.open_paths(vec![abs_path.clone()], options, None, window, cx)
 4286                })
 4287                .with_context(|| format!("open abs path {abs_path:?} task spawn"))?
 4288                .await;
 4289            anyhow::ensure!(
 4290                open_paths_task_result.len() == 1,
 4291                "open abs path {abs_path:?} task returned incorrect number of results"
 4292            );
 4293            match open_paths_task_result
 4294                .into_iter()
 4295                .next()
 4296                .expect("ensured single task result")
 4297            {
 4298                Some(open_result) => {
 4299                    open_result.with_context(|| format!("open abs path {abs_path:?} task join"))
 4300                }
 4301                None => anyhow::bail!("open abs path {abs_path:?} task returned None"),
 4302            }
 4303        })
 4304    }
 4305
 4306    pub fn split_abs_path(
 4307        &mut self,
 4308        abs_path: PathBuf,
 4309        visible: bool,
 4310        window: &mut Window,
 4311        cx: &mut Context<Self>,
 4312    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4313        let project_path_task =
 4314            Workspace::project_path_for_path(self.project.clone(), &abs_path, visible, cx);
 4315        cx.spawn_in(window, async move |this, cx| {
 4316            let (_, path) = project_path_task.await?;
 4317            this.update_in(cx, |this, window, cx| this.split_path(path, window, cx))?
 4318                .await
 4319        })
 4320    }
 4321
 4322    pub fn open_path(
 4323        &mut self,
 4324        path: impl Into<ProjectPath>,
 4325        pane: Option<WeakEntity<Pane>>,
 4326        focus_item: bool,
 4327        window: &mut Window,
 4328        cx: &mut App,
 4329    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4330        self.open_path_preview(path, pane, focus_item, false, true, window, cx)
 4331    }
 4332
 4333    pub fn open_path_preview(
 4334        &mut self,
 4335        path: impl Into<ProjectPath>,
 4336        pane: Option<WeakEntity<Pane>>,
 4337        focus_item: bool,
 4338        allow_preview: bool,
 4339        activate: bool,
 4340        window: &mut Window,
 4341        cx: &mut App,
 4342    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4343        let pane = pane.unwrap_or_else(|| {
 4344            self.last_active_center_pane.clone().unwrap_or_else(|| {
 4345                self.panes
 4346                    .first()
 4347                    .expect("There must be an active pane")
 4348                    .downgrade()
 4349            })
 4350        });
 4351
 4352        let project_path = path.into();
 4353        let task = self.load_path(project_path.clone(), window, cx);
 4354        window.spawn(cx, async move |cx| {
 4355            let (project_entry_id, build_item) = task.await?;
 4356
 4357            pane.update_in(cx, |pane, window, cx| {
 4358                pane.open_item(
 4359                    project_entry_id,
 4360                    project_path,
 4361                    focus_item,
 4362                    allow_preview,
 4363                    activate,
 4364                    None,
 4365                    window,
 4366                    cx,
 4367                    build_item,
 4368                )
 4369            })
 4370        })
 4371    }
 4372
 4373    pub fn split_path(
 4374        &mut self,
 4375        path: impl Into<ProjectPath>,
 4376        window: &mut Window,
 4377        cx: &mut Context<Self>,
 4378    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4379        self.split_path_preview(path, false, None, window, cx)
 4380    }
 4381
 4382    pub fn split_path_preview(
 4383        &mut self,
 4384        path: impl Into<ProjectPath>,
 4385        allow_preview: bool,
 4386        split_direction: Option<SplitDirection>,
 4387        window: &mut Window,
 4388        cx: &mut Context<Self>,
 4389    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4390        let pane = self.last_active_center_pane.clone().unwrap_or_else(|| {
 4391            self.panes
 4392                .first()
 4393                .expect("There must be an active pane")
 4394                .downgrade()
 4395        });
 4396
 4397        if let Member::Pane(center_pane) = &self.center.root
 4398            && center_pane.read(cx).items_len() == 0
 4399        {
 4400            return self.open_path(path, Some(pane), true, window, cx);
 4401        }
 4402
 4403        let project_path = path.into();
 4404        let task = self.load_path(project_path.clone(), window, cx);
 4405        cx.spawn_in(window, async move |this, cx| {
 4406            let (project_entry_id, build_item) = task.await?;
 4407            this.update_in(cx, move |this, window, cx| -> Option<_> {
 4408                let pane = pane.upgrade()?;
 4409                let new_pane = this.split_pane(
 4410                    pane,
 4411                    split_direction.unwrap_or(SplitDirection::Right),
 4412                    window,
 4413                    cx,
 4414                );
 4415                new_pane.update(cx, |new_pane, cx| {
 4416                    Some(new_pane.open_item(
 4417                        project_entry_id,
 4418                        project_path,
 4419                        true,
 4420                        allow_preview,
 4421                        true,
 4422                        None,
 4423                        window,
 4424                        cx,
 4425                        build_item,
 4426                    ))
 4427                })
 4428            })
 4429            .map(|option| option.context("pane was dropped"))?
 4430        })
 4431    }
 4432
 4433    fn load_path(
 4434        &mut self,
 4435        path: ProjectPath,
 4436        window: &mut Window,
 4437        cx: &mut App,
 4438    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
 4439        let registry = cx.default_global::<ProjectItemRegistry>().clone();
 4440        registry.open_path(self.project(), &path, window, cx)
 4441    }
 4442
 4443    pub fn find_project_item<T>(
 4444        &self,
 4445        pane: &Entity<Pane>,
 4446        project_item: &Entity<T::Item>,
 4447        cx: &App,
 4448    ) -> Option<Entity<T>>
 4449    where
 4450        T: ProjectItem,
 4451    {
 4452        use project::ProjectItem as _;
 4453        let project_item = project_item.read(cx);
 4454        let entry_id = project_item.entry_id(cx);
 4455        let project_path = project_item.project_path(cx);
 4456
 4457        let mut item = None;
 4458        if let Some(entry_id) = entry_id {
 4459            item = pane.read(cx).item_for_entry(entry_id, cx);
 4460        }
 4461        if item.is_none()
 4462            && let Some(project_path) = project_path
 4463        {
 4464            item = pane.read(cx).item_for_path(project_path, cx);
 4465        }
 4466
 4467        item.and_then(|item| item.downcast::<T>())
 4468    }
 4469
 4470    pub fn is_project_item_open<T>(
 4471        &self,
 4472        pane: &Entity<Pane>,
 4473        project_item: &Entity<T::Item>,
 4474        cx: &App,
 4475    ) -> bool
 4476    where
 4477        T: ProjectItem,
 4478    {
 4479        self.find_project_item::<T>(pane, project_item, cx)
 4480            .is_some()
 4481    }
 4482
 4483    pub fn open_project_item<T>(
 4484        &mut self,
 4485        pane: Entity<Pane>,
 4486        project_item: Entity<T::Item>,
 4487        activate_pane: bool,
 4488        focus_item: bool,
 4489        keep_old_preview: bool,
 4490        allow_new_preview: bool,
 4491        window: &mut Window,
 4492        cx: &mut Context<Self>,
 4493    ) -> Entity<T>
 4494    where
 4495        T: ProjectItem,
 4496    {
 4497        let old_item_id = pane.read(cx).active_item().map(|item| item.item_id());
 4498
 4499        if let Some(item) = self.find_project_item(&pane, &project_item, cx) {
 4500            if !keep_old_preview
 4501                && let Some(old_id) = old_item_id
 4502                && old_id != item.item_id()
 4503            {
 4504                // switching to a different item, so unpreview old active item
 4505                pane.update(cx, |pane, _| {
 4506                    pane.unpreview_item_if_preview(old_id);
 4507                });
 4508            }
 4509
 4510            self.activate_item(&item, activate_pane, focus_item, window, cx);
 4511            if !allow_new_preview {
 4512                pane.update(cx, |pane, _| {
 4513                    pane.unpreview_item_if_preview(item.item_id());
 4514                });
 4515            }
 4516            return item;
 4517        }
 4518
 4519        let item = pane.update(cx, |pane, cx| {
 4520            cx.new(|cx| {
 4521                T::for_project_item(self.project().clone(), Some(pane), project_item, window, cx)
 4522            })
 4523        });
 4524        let mut destination_index = None;
 4525        pane.update(cx, |pane, cx| {
 4526            if !keep_old_preview && let Some(old_id) = old_item_id {
 4527                pane.unpreview_item_if_preview(old_id);
 4528            }
 4529            if allow_new_preview {
 4530                destination_index = pane.replace_preview_item_id(item.item_id(), window, cx);
 4531            }
 4532        });
 4533
 4534        self.add_item(
 4535            pane,
 4536            Box::new(item.clone()),
 4537            destination_index,
 4538            activate_pane,
 4539            focus_item,
 4540            window,
 4541            cx,
 4542        );
 4543        item
 4544    }
 4545
 4546    pub fn open_shared_screen(
 4547        &mut self,
 4548        peer_id: PeerId,
 4549        window: &mut Window,
 4550        cx: &mut Context<Self>,
 4551    ) {
 4552        if let Some(shared_screen) =
 4553            self.shared_screen_for_peer(peer_id, &self.active_pane, window, cx)
 4554        {
 4555            self.active_pane.update(cx, |pane, cx| {
 4556                pane.add_item(Box::new(shared_screen), false, true, None, window, cx)
 4557            });
 4558        }
 4559    }
 4560
 4561    pub fn activate_item(
 4562        &mut self,
 4563        item: &dyn ItemHandle,
 4564        activate_pane: bool,
 4565        focus_item: bool,
 4566        window: &mut Window,
 4567        cx: &mut App,
 4568    ) -> bool {
 4569        let result = self.panes.iter().find_map(|pane| {
 4570            pane.read(cx)
 4571                .index_for_item(item)
 4572                .map(|ix| (pane.clone(), ix))
 4573        });
 4574        if let Some((pane, ix)) = result {
 4575            pane.update(cx, |pane, cx| {
 4576                pane.activate_item(ix, activate_pane, focus_item, window, cx)
 4577            });
 4578            true
 4579        } else {
 4580            false
 4581        }
 4582    }
 4583
 4584    fn activate_pane_at_index(
 4585        &mut self,
 4586        action: &ActivatePane,
 4587        window: &mut Window,
 4588        cx: &mut Context<Self>,
 4589    ) {
 4590        let panes = self.center.panes();
 4591        if let Some(pane) = panes.get(action.0).map(|p| (*p).clone()) {
 4592            window.focus(&pane.focus_handle(cx), cx);
 4593        } else {
 4594            self.split_and_clone(self.active_pane.clone(), SplitDirection::Right, window, cx)
 4595                .detach();
 4596        }
 4597    }
 4598
 4599    fn move_item_to_pane_at_index(
 4600        &mut self,
 4601        action: &MoveItemToPane,
 4602        window: &mut Window,
 4603        cx: &mut Context<Self>,
 4604    ) {
 4605        let panes = self.center.panes();
 4606        let destination = match panes.get(action.destination) {
 4607            Some(&destination) => destination.clone(),
 4608            None => {
 4609                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 4610                    return;
 4611                }
 4612                let direction = SplitDirection::Right;
 4613                let split_off_pane = self
 4614                    .find_pane_in_direction(direction, cx)
 4615                    .unwrap_or_else(|| self.active_pane.clone());
 4616                let new_pane = self.add_pane(window, cx);
 4617                self.center.split(&split_off_pane, &new_pane, direction, cx);
 4618                new_pane
 4619            }
 4620        };
 4621
 4622        if action.clone {
 4623            if self
 4624                .active_pane
 4625                .read(cx)
 4626                .active_item()
 4627                .is_some_and(|item| item.can_split(cx))
 4628            {
 4629                clone_active_item(
 4630                    self.database_id(),
 4631                    &self.active_pane,
 4632                    &destination,
 4633                    action.focus,
 4634                    window,
 4635                    cx,
 4636                );
 4637                return;
 4638            }
 4639        }
 4640        move_active_item(
 4641            &self.active_pane,
 4642            &destination,
 4643            action.focus,
 4644            true,
 4645            window,
 4646            cx,
 4647        )
 4648    }
 4649
 4650    pub fn activate_next_pane(&mut self, window: &mut Window, cx: &mut App) {
 4651        let panes = self.center.panes();
 4652        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 4653            let next_ix = (ix + 1) % panes.len();
 4654            let next_pane = panes[next_ix].clone();
 4655            window.focus(&next_pane.focus_handle(cx), cx);
 4656        }
 4657    }
 4658
 4659    pub fn activate_previous_pane(&mut self, window: &mut Window, cx: &mut App) {
 4660        let panes = self.center.panes();
 4661        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 4662            let prev_ix = cmp::min(ix.wrapping_sub(1), panes.len() - 1);
 4663            let prev_pane = panes[prev_ix].clone();
 4664            window.focus(&prev_pane.focus_handle(cx), cx);
 4665        }
 4666    }
 4667
 4668    pub fn activate_last_pane(&mut self, window: &mut Window, cx: &mut App) {
 4669        let last_pane = self.center.last_pane();
 4670        window.focus(&last_pane.focus_handle(cx), cx);
 4671    }
 4672
 4673    pub fn activate_pane_in_direction(
 4674        &mut self,
 4675        direction: SplitDirection,
 4676        window: &mut Window,
 4677        cx: &mut App,
 4678    ) {
 4679        use ActivateInDirectionTarget as Target;
 4680        enum Origin {
 4681            Sidebar,
 4682            LeftDock,
 4683            RightDock,
 4684            BottomDock,
 4685            Center,
 4686        }
 4687
 4688        let origin: Origin = if self
 4689            .sidebar_focus_handle
 4690            .as_ref()
 4691            .is_some_and(|h| h.contains_focused(window, cx))
 4692        {
 4693            Origin::Sidebar
 4694        } else {
 4695            [
 4696                (&self.left_dock, Origin::LeftDock),
 4697                (&self.right_dock, Origin::RightDock),
 4698                (&self.bottom_dock, Origin::BottomDock),
 4699            ]
 4700            .into_iter()
 4701            .find_map(|(dock, origin)| {
 4702                if dock.focus_handle(cx).contains_focused(window, cx) && dock.read(cx).is_open() {
 4703                    Some(origin)
 4704                } else {
 4705                    None
 4706                }
 4707            })
 4708            .unwrap_or(Origin::Center)
 4709        };
 4710
 4711        let get_last_active_pane = || {
 4712            let pane = self
 4713                .last_active_center_pane
 4714                .clone()
 4715                .unwrap_or_else(|| {
 4716                    self.panes
 4717                        .first()
 4718                        .expect("There must be an active pane")
 4719                        .downgrade()
 4720                })
 4721                .upgrade()?;
 4722            (pane.read(cx).items_len() != 0).then_some(pane)
 4723        };
 4724
 4725        let try_dock =
 4726            |dock: &Entity<Dock>| dock.read(cx).is_open().then(|| Target::Dock(dock.clone()));
 4727
 4728        let sidebar_target = self
 4729            .sidebar_focus_handle
 4730            .as_ref()
 4731            .map(|h| Target::Sidebar(h.clone()));
 4732
 4733        let sidebar_on_left = self
 4734            .multi_workspace
 4735            .as_ref()
 4736            .and_then(|mw| mw.upgrade())
 4737            .map_or(true, |mw| mw.read(cx).sidebar_side(cx) == SidebarSide::Left);
 4738
 4739        let sidebar_on_side = |side: SplitDirection| -> Option<ActivateInDirectionTarget> {
 4740            if (side == SplitDirection::Left) == sidebar_on_left {
 4741                sidebar_target.clone()
 4742            } else {
 4743                None
 4744            }
 4745        };
 4746
 4747        let target = match (origin, direction) {
 4748            // From the sidebar, only the inward direction navigates into
 4749            // the workspace. Which direction is "inward" depends on which
 4750            // side the sidebar is on.
 4751            (Origin::Sidebar, SplitDirection::Right) if sidebar_on_left => {
 4752                try_dock(&self.left_dock)
 4753                    .or_else(|| get_last_active_pane().map(Target::Pane))
 4754                    .or_else(|| try_dock(&self.bottom_dock))
 4755                    .or_else(|| try_dock(&self.right_dock))
 4756            }
 4757            (Origin::Sidebar, SplitDirection::Left) if !sidebar_on_left => {
 4758                try_dock(&self.right_dock)
 4759                    .or_else(|| get_last_active_pane().map(Target::Pane))
 4760                    .or_else(|| try_dock(&self.bottom_dock))
 4761                    .or_else(|| try_dock(&self.left_dock))
 4762            }
 4763
 4764            (Origin::Sidebar, _) => None,
 4765
 4766            // We're in the center, so we first try to go to a different pane,
 4767            // otherwise try to go to a dock.
 4768            (Origin::Center, direction) => {
 4769                if let Some(pane) = self.find_pane_in_direction(direction, cx) {
 4770                    Some(Target::Pane(pane))
 4771                } else {
 4772                    match direction {
 4773                        SplitDirection::Up => None,
 4774                        SplitDirection::Down => try_dock(&self.bottom_dock),
 4775                        SplitDirection::Left => {
 4776                            try_dock(&self.left_dock).or_else(|| sidebar_on_side(direction))
 4777                        }
 4778                        SplitDirection::Right => {
 4779                            try_dock(&self.right_dock).or_else(|| sidebar_on_side(direction))
 4780                        }
 4781                    }
 4782                }
 4783            }
 4784
 4785            (Origin::LeftDock, SplitDirection::Right) => {
 4786                if let Some(last_active_pane) = get_last_active_pane() {
 4787                    Some(Target::Pane(last_active_pane))
 4788                } else {
 4789                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.right_dock))
 4790                }
 4791            }
 4792
 4793            (Origin::LeftDock, SplitDirection::Left) => sidebar_on_side(SplitDirection::Left),
 4794
 4795            (Origin::LeftDock, SplitDirection::Down)
 4796            | (Origin::RightDock, SplitDirection::Down) => try_dock(&self.bottom_dock),
 4797
 4798            (Origin::BottomDock, SplitDirection::Up) => get_last_active_pane().map(Target::Pane),
 4799            (Origin::BottomDock, SplitDirection::Left) => {
 4800                try_dock(&self.left_dock).or_else(|| sidebar_on_side(SplitDirection::Left))
 4801            }
 4802            (Origin::BottomDock, SplitDirection::Right) => {
 4803                try_dock(&self.right_dock).or_else(|| sidebar_on_side(SplitDirection::Right))
 4804            }
 4805
 4806            (Origin::RightDock, SplitDirection::Left) => {
 4807                if let Some(last_active_pane) = get_last_active_pane() {
 4808                    Some(Target::Pane(last_active_pane))
 4809                } else {
 4810                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.left_dock))
 4811                }
 4812            }
 4813
 4814            (Origin::RightDock, SplitDirection::Right) => sidebar_on_side(SplitDirection::Right),
 4815
 4816            _ => None,
 4817        };
 4818
 4819        match target {
 4820            Some(ActivateInDirectionTarget::Pane(pane)) => {
 4821                let pane = pane.read(cx);
 4822                if let Some(item) = pane.active_item() {
 4823                    item.item_focus_handle(cx).focus(window, cx);
 4824                } else {
 4825                    log::error!(
 4826                        "Could not find a focus target when in switching focus in {direction} direction for a pane",
 4827                    );
 4828                }
 4829            }
 4830            Some(ActivateInDirectionTarget::Dock(dock)) => {
 4831                // Defer this to avoid a panic when the dock's active panel is already on the stack.
 4832                window.defer(cx, move |window, cx| {
 4833                    let dock = dock.read(cx);
 4834                    if let Some(panel) = dock.active_panel() {
 4835                        panel.panel_focus_handle(cx).focus(window, cx);
 4836                    } else {
 4837                        log::error!("Could not find a focus target when in switching focus in {direction} direction for a {:?} dock", dock.position());
 4838                    }
 4839                })
 4840            }
 4841            Some(ActivateInDirectionTarget::Sidebar(focus_handle)) => {
 4842                focus_handle.focus(window, cx);
 4843            }
 4844            None => {}
 4845        }
 4846    }
 4847
 4848    pub fn move_item_to_pane_in_direction(
 4849        &mut self,
 4850        action: &MoveItemToPaneInDirection,
 4851        window: &mut Window,
 4852        cx: &mut Context<Self>,
 4853    ) {
 4854        let destination = match self.find_pane_in_direction(action.direction, cx) {
 4855            Some(destination) => destination,
 4856            None => {
 4857                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 4858                    return;
 4859                }
 4860                let new_pane = self.add_pane(window, cx);
 4861                self.center
 4862                    .split(&self.active_pane, &new_pane, action.direction, cx);
 4863                new_pane
 4864            }
 4865        };
 4866
 4867        if action.clone {
 4868            if self
 4869                .active_pane
 4870                .read(cx)
 4871                .active_item()
 4872                .is_some_and(|item| item.can_split(cx))
 4873            {
 4874                clone_active_item(
 4875                    self.database_id(),
 4876                    &self.active_pane,
 4877                    &destination,
 4878                    action.focus,
 4879                    window,
 4880                    cx,
 4881                );
 4882                return;
 4883            }
 4884        }
 4885        move_active_item(
 4886            &self.active_pane,
 4887            &destination,
 4888            action.focus,
 4889            true,
 4890            window,
 4891            cx,
 4892        );
 4893    }
 4894
 4895    pub fn bounding_box_for_pane(&self, pane: &Entity<Pane>) -> Option<Bounds<Pixels>> {
 4896        self.center.bounding_box_for_pane(pane)
 4897    }
 4898
 4899    pub fn find_pane_in_direction(
 4900        &mut self,
 4901        direction: SplitDirection,
 4902        cx: &App,
 4903    ) -> Option<Entity<Pane>> {
 4904        self.center
 4905            .find_pane_in_direction(&self.active_pane, direction, cx)
 4906            .cloned()
 4907    }
 4908
 4909    pub fn swap_pane_in_direction(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 4910        if let Some(to) = self.find_pane_in_direction(direction, cx) {
 4911            self.center.swap(&self.active_pane, &to, cx);
 4912            cx.notify();
 4913        }
 4914    }
 4915
 4916    pub fn move_pane_to_border(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 4917        if self
 4918            .center
 4919            .move_to_border(&self.active_pane, direction, cx)
 4920            .unwrap()
 4921        {
 4922            cx.notify();
 4923        }
 4924    }
 4925
 4926    pub fn resize_pane(
 4927        &mut self,
 4928        axis: gpui::Axis,
 4929        amount: Pixels,
 4930        window: &mut Window,
 4931        cx: &mut Context<Self>,
 4932    ) {
 4933        let docks = self.all_docks();
 4934        let active_dock = docks
 4935            .into_iter()
 4936            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 4937
 4938        if let Some(dock_entity) = active_dock {
 4939            let dock = dock_entity.read(cx);
 4940            let Some(panel_size) = dock
 4941                .active_panel()
 4942                .map(|panel| self.resolved_dock_panel_size(&dock, panel.as_ref(), window, cx))
 4943            else {
 4944                return;
 4945            };
 4946            match dock.position() {
 4947                DockPosition::Left => self.resize_left_dock(panel_size + amount, window, cx),
 4948                DockPosition::Bottom => self.resize_bottom_dock(panel_size + amount, window, cx),
 4949                DockPosition::Right => self.resize_right_dock(panel_size + amount, window, cx),
 4950            }
 4951        } else {
 4952            self.center
 4953                .resize(&self.active_pane, axis, amount, &self.bounds, cx);
 4954        }
 4955        cx.notify();
 4956    }
 4957
 4958    pub fn reset_pane_sizes(&mut self, cx: &mut Context<Self>) {
 4959        self.center.reset_pane_sizes(cx);
 4960        cx.notify();
 4961    }
 4962
 4963    fn handle_pane_focused(
 4964        &mut self,
 4965        pane: Entity<Pane>,
 4966        window: &mut Window,
 4967        cx: &mut Context<Self>,
 4968    ) {
 4969        // This is explicitly hoisted out of the following check for pane identity as
 4970        // terminal panel panes are not registered as a center panes.
 4971        self.status_bar.update(cx, |status_bar, cx| {
 4972            status_bar.set_active_pane(&pane, window, cx);
 4973        });
 4974        if self.active_pane != pane {
 4975            self.set_active_pane(&pane, window, cx);
 4976        }
 4977
 4978        if self.last_active_center_pane.is_none() {
 4979            self.last_active_center_pane = Some(pane.downgrade());
 4980        }
 4981
 4982        // If this pane is in a dock, preserve that dock when dismissing zoomed items.
 4983        // This prevents the dock from closing when focus events fire during window activation.
 4984        // We also preserve any dock whose active panel itself has focus — this covers
 4985        // panels like AgentPanel that don't implement `pane()` but can still be zoomed.
 4986        let dock_to_preserve = self.all_docks().iter().find_map(|dock| {
 4987            let dock_read = dock.read(cx);
 4988            if let Some(panel) = dock_read.active_panel() {
 4989                if panel.pane(cx).is_some_and(|dock_pane| dock_pane == pane)
 4990                    || panel.panel_focus_handle(cx).contains_focused(window, cx)
 4991                {
 4992                    return Some(dock_read.position());
 4993                }
 4994            }
 4995            None
 4996        });
 4997
 4998        self.dismiss_zoomed_items_to_reveal(dock_to_preserve, window, cx);
 4999        if pane.read(cx).is_zoomed() {
 5000            self.zoomed = Some(pane.downgrade().into());
 5001        } else {
 5002            self.zoomed = None;
 5003        }
 5004        self.zoomed_position = None;
 5005        cx.emit(Event::ZoomChanged);
 5006        self.update_active_view_for_followers(window, cx);
 5007        pane.update(cx, |pane, _| {
 5008            pane.track_alternate_file_items();
 5009        });
 5010
 5011        cx.notify();
 5012    }
 5013
 5014    fn set_active_pane(
 5015        &mut self,
 5016        pane: &Entity<Pane>,
 5017        window: &mut Window,
 5018        cx: &mut Context<Self>,
 5019    ) {
 5020        self.active_pane = pane.clone();
 5021        self.active_item_path_changed(true, window, cx);
 5022        self.last_active_center_pane = Some(pane.downgrade());
 5023    }
 5024
 5025    fn handle_panel_focused(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5026        self.update_active_view_for_followers(window, cx);
 5027    }
 5028
 5029    fn handle_pane_event(
 5030        &mut self,
 5031        pane: &Entity<Pane>,
 5032        event: &pane::Event,
 5033        window: &mut Window,
 5034        cx: &mut Context<Self>,
 5035    ) {
 5036        let mut serialize_workspace = true;
 5037        match event {
 5038            pane::Event::AddItem { item } => {
 5039                item.added_to_pane(self, pane.clone(), window, cx);
 5040                cx.emit(Event::ItemAdded {
 5041                    item: item.boxed_clone(),
 5042                });
 5043            }
 5044            pane::Event::Split { direction, mode } => {
 5045                match mode {
 5046                    SplitMode::ClonePane => {
 5047                        self.split_and_clone(pane.clone(), *direction, window, cx)
 5048                            .detach();
 5049                    }
 5050                    SplitMode::EmptyPane => {
 5051                        self.split_pane(pane.clone(), *direction, window, cx);
 5052                    }
 5053                    SplitMode::MovePane => {
 5054                        self.split_and_move(pane.clone(), *direction, window, cx);
 5055                    }
 5056                };
 5057            }
 5058            pane::Event::JoinIntoNext => {
 5059                self.join_pane_into_next(pane.clone(), window, cx);
 5060            }
 5061            pane::Event::JoinAll => {
 5062                self.join_all_panes(window, cx);
 5063            }
 5064            pane::Event::Remove { focus_on_pane } => {
 5065                self.remove_pane(pane.clone(), focus_on_pane.clone(), window, cx);
 5066            }
 5067            pane::Event::ActivateItem {
 5068                local,
 5069                focus_changed,
 5070            } => {
 5071                window.invalidate_character_coordinates();
 5072
 5073                pane.update(cx, |pane, _| {
 5074                    pane.track_alternate_file_items();
 5075                });
 5076                if *local {
 5077                    self.unfollow_in_pane(pane, window, cx);
 5078                }
 5079                serialize_workspace = *focus_changed || pane != self.active_pane();
 5080                if pane == self.active_pane() {
 5081                    self.active_item_path_changed(*focus_changed, window, cx);
 5082                    self.update_active_view_for_followers(window, cx);
 5083                } else if *local {
 5084                    self.set_active_pane(pane, window, cx);
 5085                }
 5086            }
 5087            pane::Event::UserSavedItem { item, save_intent } => {
 5088                cx.emit(Event::UserSavedItem {
 5089                    pane: pane.downgrade(),
 5090                    item: item.boxed_clone(),
 5091                    save_intent: *save_intent,
 5092                });
 5093                serialize_workspace = false;
 5094            }
 5095            pane::Event::ChangeItemTitle => {
 5096                if *pane == self.active_pane {
 5097                    self.active_item_path_changed(false, window, cx);
 5098                }
 5099                serialize_workspace = false;
 5100            }
 5101            pane::Event::RemovedItem { item } => {
 5102                cx.emit(Event::ActiveItemChanged);
 5103                self.update_window_edited(window, cx);
 5104                if let hash_map::Entry::Occupied(entry) = self.panes_by_item.entry(item.item_id())
 5105                    && entry.get().entity_id() == pane.entity_id()
 5106                {
 5107                    entry.remove();
 5108                }
 5109                cx.emit(Event::ItemRemoved {
 5110                    item_id: item.item_id(),
 5111                });
 5112            }
 5113            pane::Event::Focus => {
 5114                window.invalidate_character_coordinates();
 5115                self.handle_pane_focused(pane.clone(), window, cx);
 5116            }
 5117            pane::Event::ZoomIn => {
 5118                if *pane == self.active_pane {
 5119                    pane.update(cx, |pane, cx| pane.set_zoomed(true, cx));
 5120                    if pane.read(cx).has_focus(window, cx) {
 5121                        self.zoomed = Some(pane.downgrade().into());
 5122                        self.zoomed_position = None;
 5123                        cx.emit(Event::ZoomChanged);
 5124                    }
 5125                    cx.notify();
 5126                }
 5127            }
 5128            pane::Event::ZoomOut => {
 5129                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 5130                if self.zoomed_position.is_none() {
 5131                    self.zoomed = None;
 5132                    cx.emit(Event::ZoomChanged);
 5133                }
 5134                cx.notify();
 5135            }
 5136            pane::Event::ItemPinned | pane::Event::ItemUnpinned => {}
 5137        }
 5138
 5139        if serialize_workspace {
 5140            self.serialize_workspace(window, cx);
 5141        }
 5142    }
 5143
 5144    pub fn unfollow_in_pane(
 5145        &mut self,
 5146        pane: &Entity<Pane>,
 5147        window: &mut Window,
 5148        cx: &mut Context<Workspace>,
 5149    ) -> Option<CollaboratorId> {
 5150        let leader_id = self.leader_for_pane(pane)?;
 5151        self.unfollow(leader_id, window, cx);
 5152        Some(leader_id)
 5153    }
 5154
 5155    pub fn split_pane(
 5156        &mut self,
 5157        pane_to_split: Entity<Pane>,
 5158        split_direction: SplitDirection,
 5159        window: &mut Window,
 5160        cx: &mut Context<Self>,
 5161    ) -> Entity<Pane> {
 5162        let new_pane = self.add_pane(window, cx);
 5163        self.center
 5164            .split(&pane_to_split, &new_pane, split_direction, cx);
 5165        cx.notify();
 5166        new_pane
 5167    }
 5168
 5169    pub fn split_and_move(
 5170        &mut self,
 5171        pane: Entity<Pane>,
 5172        direction: SplitDirection,
 5173        window: &mut Window,
 5174        cx: &mut Context<Self>,
 5175    ) {
 5176        let Some(item) = pane.update(cx, |pane, cx| pane.take_active_item(window, cx)) else {
 5177            return;
 5178        };
 5179        let new_pane = self.add_pane(window, cx);
 5180        new_pane.update(cx, |pane, cx| {
 5181            pane.add_item(item, true, true, None, window, cx)
 5182        });
 5183        self.center.split(&pane, &new_pane, direction, cx);
 5184        cx.notify();
 5185    }
 5186
 5187    pub fn split_and_clone(
 5188        &mut self,
 5189        pane: Entity<Pane>,
 5190        direction: SplitDirection,
 5191        window: &mut Window,
 5192        cx: &mut Context<Self>,
 5193    ) -> Task<Option<Entity<Pane>>> {
 5194        let Some(item) = pane.read(cx).active_item() else {
 5195            return Task::ready(None);
 5196        };
 5197        if !item.can_split(cx) {
 5198            return Task::ready(None);
 5199        }
 5200        let task = item.clone_on_split(self.database_id(), window, cx);
 5201        cx.spawn_in(window, async move |this, cx| {
 5202            if let Some(clone) = task.await {
 5203                this.update_in(cx, |this, window, cx| {
 5204                    let new_pane = this.add_pane(window, cx);
 5205                    let nav_history = pane.read(cx).fork_nav_history();
 5206                    new_pane.update(cx, |pane, cx| {
 5207                        pane.set_nav_history(nav_history, cx);
 5208                        pane.add_item(clone, true, true, None, window, cx)
 5209                    });
 5210                    this.center.split(&pane, &new_pane, direction, cx);
 5211                    cx.notify();
 5212                    new_pane
 5213                })
 5214                .ok()
 5215            } else {
 5216                None
 5217            }
 5218        })
 5219    }
 5220
 5221    pub fn join_all_panes(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5222        let active_item = self.active_pane.read(cx).active_item();
 5223        for pane in &self.panes {
 5224            join_pane_into_active(&self.active_pane, pane, window, cx);
 5225        }
 5226        if let Some(active_item) = active_item {
 5227            self.activate_item(active_item.as_ref(), true, true, window, cx);
 5228        }
 5229        cx.notify();
 5230    }
 5231
 5232    pub fn join_pane_into_next(
 5233        &mut self,
 5234        pane: Entity<Pane>,
 5235        window: &mut Window,
 5236        cx: &mut Context<Self>,
 5237    ) {
 5238        let next_pane = self
 5239            .find_pane_in_direction(SplitDirection::Right, cx)
 5240            .or_else(|| self.find_pane_in_direction(SplitDirection::Down, cx))
 5241            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 5242            .or_else(|| self.find_pane_in_direction(SplitDirection::Up, cx));
 5243        let Some(next_pane) = next_pane else {
 5244            return;
 5245        };
 5246        move_all_items(&pane, &next_pane, window, cx);
 5247        cx.notify();
 5248    }
 5249
 5250    fn remove_pane(
 5251        &mut self,
 5252        pane: Entity<Pane>,
 5253        focus_on: Option<Entity<Pane>>,
 5254        window: &mut Window,
 5255        cx: &mut Context<Self>,
 5256    ) {
 5257        if self.center.remove(&pane, cx).unwrap() {
 5258            self.force_remove_pane(&pane, &focus_on, window, cx);
 5259            self.unfollow_in_pane(&pane, window, cx);
 5260            self.last_leaders_by_pane.remove(&pane.downgrade());
 5261            for removed_item in pane.read(cx).items() {
 5262                self.panes_by_item.remove(&removed_item.item_id());
 5263            }
 5264
 5265            cx.notify();
 5266        } else {
 5267            self.active_item_path_changed(true, window, cx);
 5268        }
 5269        cx.emit(Event::PaneRemoved);
 5270    }
 5271
 5272    pub fn panes_mut(&mut self) -> &mut [Entity<Pane>] {
 5273        &mut self.panes
 5274    }
 5275
 5276    pub fn panes(&self) -> &[Entity<Pane>] {
 5277        &self.panes
 5278    }
 5279
 5280    pub fn active_pane(&self) -> &Entity<Pane> {
 5281        &self.active_pane
 5282    }
 5283
 5284    pub fn focused_pane(&self, window: &Window, cx: &App) -> Entity<Pane> {
 5285        for dock in self.all_docks() {
 5286            if dock.focus_handle(cx).contains_focused(window, cx)
 5287                && let Some(pane) = dock
 5288                    .read(cx)
 5289                    .active_panel()
 5290                    .and_then(|panel| panel.pane(cx))
 5291            {
 5292                return pane;
 5293            }
 5294        }
 5295        self.active_pane().clone()
 5296    }
 5297
 5298    pub fn adjacent_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 5299        self.find_pane_in_direction(SplitDirection::Right, cx)
 5300            .unwrap_or_else(|| {
 5301                self.split_pane(self.active_pane.clone(), SplitDirection::Right, window, cx)
 5302            })
 5303    }
 5304
 5305    pub fn pane_for(&self, handle: &dyn ItemHandle) -> Option<Entity<Pane>> {
 5306        self.pane_for_item_id(handle.item_id())
 5307    }
 5308
 5309    pub fn pane_for_item_id(&self, item_id: EntityId) -> Option<Entity<Pane>> {
 5310        let weak_pane = self.panes_by_item.get(&item_id)?;
 5311        weak_pane.upgrade()
 5312    }
 5313
 5314    pub fn pane_for_entity_id(&self, entity_id: EntityId) -> Option<Entity<Pane>> {
 5315        self.panes
 5316            .iter()
 5317            .find(|pane| pane.entity_id() == entity_id)
 5318            .cloned()
 5319    }
 5320
 5321    fn collaborator_left(&mut self, peer_id: PeerId, window: &mut Window, cx: &mut Context<Self>) {
 5322        self.follower_states.retain(|leader_id, state| {
 5323            if *leader_id == CollaboratorId::PeerId(peer_id) {
 5324                for item in state.items_by_leader_view_id.values() {
 5325                    item.view.set_leader_id(None, window, cx);
 5326                }
 5327                false
 5328            } else {
 5329                true
 5330            }
 5331        });
 5332        cx.notify();
 5333    }
 5334
 5335    pub fn start_following(
 5336        &mut self,
 5337        leader_id: impl Into<CollaboratorId>,
 5338        window: &mut Window,
 5339        cx: &mut Context<Self>,
 5340    ) -> Option<Task<Result<()>>> {
 5341        let leader_id = leader_id.into();
 5342        let pane = self.active_pane().clone();
 5343
 5344        self.last_leaders_by_pane
 5345            .insert(pane.downgrade(), leader_id);
 5346        self.unfollow(leader_id, window, cx);
 5347        self.unfollow_in_pane(&pane, window, cx);
 5348        self.follower_states.insert(
 5349            leader_id,
 5350            FollowerState {
 5351                center_pane: pane.clone(),
 5352                dock_pane: None,
 5353                active_view_id: None,
 5354                items_by_leader_view_id: Default::default(),
 5355            },
 5356        );
 5357        cx.notify();
 5358
 5359        match leader_id {
 5360            CollaboratorId::PeerId(leader_peer_id) => {
 5361                let room_id = self.active_call()?.room_id(cx)?;
 5362                let project_id = self.project.read(cx).remote_id();
 5363                let request = self.app_state.client.request(proto::Follow {
 5364                    room_id,
 5365                    project_id,
 5366                    leader_id: Some(leader_peer_id),
 5367                });
 5368
 5369                Some(cx.spawn_in(window, async move |this, cx| {
 5370                    let response = request.await?;
 5371                    this.update(cx, |this, _| {
 5372                        let state = this
 5373                            .follower_states
 5374                            .get_mut(&leader_id)
 5375                            .context("following interrupted")?;
 5376                        state.active_view_id = response
 5377                            .active_view
 5378                            .as_ref()
 5379                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 5380                        anyhow::Ok(())
 5381                    })??;
 5382                    if let Some(view) = response.active_view {
 5383                        Self::add_view_from_leader(this.clone(), leader_peer_id, &view, cx).await?;
 5384                    }
 5385                    this.update_in(cx, |this, window, cx| {
 5386                        this.leader_updated(leader_id, window, cx)
 5387                    })?;
 5388                    Ok(())
 5389                }))
 5390            }
 5391            CollaboratorId::Agent => {
 5392                self.leader_updated(leader_id, window, cx)?;
 5393                Some(Task::ready(Ok(())))
 5394            }
 5395        }
 5396    }
 5397
 5398    pub fn follow_next_collaborator(
 5399        &mut self,
 5400        _: &FollowNextCollaborator,
 5401        window: &mut Window,
 5402        cx: &mut Context<Self>,
 5403    ) {
 5404        let collaborators = self.project.read(cx).collaborators();
 5405        let next_leader_id = if let Some(leader_id) = self.leader_for_pane(&self.active_pane) {
 5406            let mut collaborators = collaborators.keys().copied();
 5407            for peer_id in collaborators.by_ref() {
 5408                if CollaboratorId::PeerId(peer_id) == leader_id {
 5409                    break;
 5410                }
 5411            }
 5412            collaborators.next().map(CollaboratorId::PeerId)
 5413        } else if let Some(last_leader_id) =
 5414            self.last_leaders_by_pane.get(&self.active_pane.downgrade())
 5415        {
 5416            match last_leader_id {
 5417                CollaboratorId::PeerId(peer_id) => {
 5418                    if collaborators.contains_key(peer_id) {
 5419                        Some(*last_leader_id)
 5420                    } else {
 5421                        None
 5422                    }
 5423                }
 5424                CollaboratorId::Agent => Some(CollaboratorId::Agent),
 5425            }
 5426        } else {
 5427            None
 5428        };
 5429
 5430        let pane = self.active_pane.clone();
 5431        let Some(leader_id) = next_leader_id.or_else(|| {
 5432            Some(CollaboratorId::PeerId(
 5433                collaborators.keys().copied().next()?,
 5434            ))
 5435        }) else {
 5436            return;
 5437        };
 5438        if self.unfollow_in_pane(&pane, window, cx) == Some(leader_id) {
 5439            return;
 5440        }
 5441        if let Some(task) = self.start_following(leader_id, window, cx) {
 5442            task.detach_and_log_err(cx)
 5443        }
 5444    }
 5445
 5446    pub fn follow(
 5447        &mut self,
 5448        leader_id: impl Into<CollaboratorId>,
 5449        window: &mut Window,
 5450        cx: &mut Context<Self>,
 5451    ) {
 5452        let leader_id = leader_id.into();
 5453
 5454        if let CollaboratorId::PeerId(peer_id) = leader_id {
 5455            let Some(active_call) = GlobalAnyActiveCall::try_global(cx) else {
 5456                return;
 5457            };
 5458            let Some(remote_participant) =
 5459                active_call.0.remote_participant_for_peer_id(peer_id, cx)
 5460            else {
 5461                return;
 5462            };
 5463
 5464            let project = self.project.read(cx);
 5465
 5466            let other_project_id = match remote_participant.location {
 5467                ParticipantLocation::External => None,
 5468                ParticipantLocation::UnsharedProject => None,
 5469                ParticipantLocation::SharedProject { project_id } => {
 5470                    if Some(project_id) == project.remote_id() {
 5471                        None
 5472                    } else {
 5473                        Some(project_id)
 5474                    }
 5475                }
 5476            };
 5477
 5478            // if they are active in another project, follow there.
 5479            if let Some(project_id) = other_project_id {
 5480                let app_state = self.app_state.clone();
 5481                crate::join_in_room_project(project_id, remote_participant.user.id, app_state, cx)
 5482                    .detach_and_log_err(cx);
 5483            }
 5484        }
 5485
 5486        // if you're already following, find the right pane and focus it.
 5487        if let Some(follower_state) = self.follower_states.get(&leader_id) {
 5488            window.focus(&follower_state.pane().focus_handle(cx), cx);
 5489
 5490            return;
 5491        }
 5492
 5493        // Otherwise, follow.
 5494        if let Some(task) = self.start_following(leader_id, window, cx) {
 5495            task.detach_and_log_err(cx)
 5496        }
 5497    }
 5498
 5499    pub fn unfollow(
 5500        &mut self,
 5501        leader_id: impl Into<CollaboratorId>,
 5502        window: &mut Window,
 5503        cx: &mut Context<Self>,
 5504    ) -> Option<()> {
 5505        cx.notify();
 5506
 5507        let leader_id = leader_id.into();
 5508        let state = self.follower_states.remove(&leader_id)?;
 5509        for (_, item) in state.items_by_leader_view_id {
 5510            item.view.set_leader_id(None, window, cx);
 5511        }
 5512
 5513        if let CollaboratorId::PeerId(leader_peer_id) = leader_id {
 5514            let project_id = self.project.read(cx).remote_id();
 5515            let room_id = self.active_call()?.room_id(cx)?;
 5516            self.app_state
 5517                .client
 5518                .send(proto::Unfollow {
 5519                    room_id,
 5520                    project_id,
 5521                    leader_id: Some(leader_peer_id),
 5522                })
 5523                .log_err();
 5524        }
 5525
 5526        Some(())
 5527    }
 5528
 5529    pub fn is_being_followed(&self, id: impl Into<CollaboratorId>) -> bool {
 5530        self.follower_states.contains_key(&id.into())
 5531    }
 5532
 5533    fn active_item_path_changed(
 5534        &mut self,
 5535        focus_changed: bool,
 5536        window: &mut Window,
 5537        cx: &mut Context<Self>,
 5538    ) {
 5539        cx.emit(Event::ActiveItemChanged);
 5540        let active_entry = self.active_project_path(cx);
 5541        self.project.update(cx, |project, cx| {
 5542            project.set_active_path(active_entry.clone(), cx)
 5543        });
 5544
 5545        if focus_changed && let Some(project_path) = &active_entry {
 5546            let git_store_entity = self.project.read(cx).git_store().clone();
 5547            git_store_entity.update(cx, |git_store, cx| {
 5548                git_store.set_active_repo_for_path(project_path, cx);
 5549            });
 5550        }
 5551
 5552        self.update_window_title(window, cx);
 5553    }
 5554
 5555    fn update_window_title(&mut self, window: &mut Window, cx: &mut App) {
 5556        let project = self.project().read(cx);
 5557        let mut title = String::new();
 5558
 5559        for (i, worktree) in project.visible_worktrees(cx).enumerate() {
 5560            let name = {
 5561                let settings_location = SettingsLocation {
 5562                    worktree_id: worktree.read(cx).id(),
 5563                    path: RelPath::empty(),
 5564                };
 5565
 5566                let settings = WorktreeSettings::get(Some(settings_location), cx);
 5567                match &settings.project_name {
 5568                    Some(name) => name.as_str(),
 5569                    None => worktree.read(cx).root_name_str(),
 5570                }
 5571            };
 5572            if i > 0 {
 5573                title.push_str(", ");
 5574            }
 5575            title.push_str(name);
 5576        }
 5577
 5578        if title.is_empty() {
 5579            title = "empty project".to_string();
 5580        }
 5581
 5582        if let Some(path) = self.active_item(cx).and_then(|item| item.project_path(cx)) {
 5583            let filename = path.path.file_name().or_else(|| {
 5584                Some(
 5585                    project
 5586                        .worktree_for_id(path.worktree_id, cx)?
 5587                        .read(cx)
 5588                        .root_name_str(),
 5589                )
 5590            });
 5591
 5592            if let Some(filename) = filename {
 5593                title.push_str("");
 5594                title.push_str(filename.as_ref());
 5595            }
 5596        }
 5597
 5598        if project.is_via_collab() {
 5599            title.push_str("");
 5600        } else if project.is_shared() {
 5601            title.push_str("");
 5602        }
 5603
 5604        if let Some(last_title) = self.last_window_title.as_ref()
 5605            && &title == last_title
 5606        {
 5607            return;
 5608        }
 5609        window.set_window_title(&title);
 5610        SystemWindowTabController::update_tab_title(
 5611            cx,
 5612            window.window_handle().window_id(),
 5613            SharedString::from(&title),
 5614        );
 5615        self.last_window_title = Some(title);
 5616    }
 5617
 5618    fn update_window_edited(&mut self, window: &mut Window, cx: &mut App) {
 5619        let is_edited = !self.project.read(cx).is_disconnected(cx) && !self.dirty_items.is_empty();
 5620        if is_edited != self.window_edited {
 5621            self.window_edited = is_edited;
 5622            window.set_window_edited(self.window_edited)
 5623        }
 5624    }
 5625
 5626    fn update_item_dirty_state(
 5627        &mut self,
 5628        item: &dyn ItemHandle,
 5629        window: &mut Window,
 5630        cx: &mut App,
 5631    ) {
 5632        let is_dirty = item.is_dirty(cx);
 5633        let item_id = item.item_id();
 5634        let was_dirty = self.dirty_items.contains_key(&item_id);
 5635        if is_dirty == was_dirty {
 5636            return;
 5637        }
 5638        if was_dirty {
 5639            self.dirty_items.remove(&item_id);
 5640            self.update_window_edited(window, cx);
 5641            return;
 5642        }
 5643
 5644        let workspace = self.weak_handle();
 5645        let Some(window_handle) = window.window_handle().downcast::<MultiWorkspace>() else {
 5646            return;
 5647        };
 5648        let on_release_callback = Box::new(move |cx: &mut App| {
 5649            window_handle
 5650                .update(cx, |_, window, cx| {
 5651                    workspace
 5652                        .update(cx, |workspace, cx| {
 5653                            workspace.dirty_items.remove(&item_id);
 5654                            workspace.update_window_edited(window, cx)
 5655                        })
 5656                        .ok();
 5657                })
 5658                .ok();
 5659        });
 5660
 5661        let s = item.on_release(cx, on_release_callback);
 5662        self.dirty_items.insert(item_id, s);
 5663        self.update_window_edited(window, cx);
 5664    }
 5665
 5666    fn render_notifications(&self, _window: &mut Window, _cx: &mut Context<Self>) -> Option<Div> {
 5667        if self.notifications.is_empty() {
 5668            None
 5669        } else {
 5670            Some(
 5671                div()
 5672                    .absolute()
 5673                    .right_3()
 5674                    .bottom_3()
 5675                    .w_112()
 5676                    .h_full()
 5677                    .flex()
 5678                    .flex_col()
 5679                    .justify_end()
 5680                    .gap_2()
 5681                    .children(
 5682                        self.notifications
 5683                            .iter()
 5684                            .map(|(_, notification)| notification.clone().into_any()),
 5685                    ),
 5686            )
 5687        }
 5688    }
 5689
 5690    // RPC handlers
 5691
 5692    fn active_view_for_follower(
 5693        &self,
 5694        follower_project_id: Option<u64>,
 5695        window: &mut Window,
 5696        cx: &mut Context<Self>,
 5697    ) -> Option<proto::View> {
 5698        let (item, panel_id) = self.active_item_for_followers(window, cx);
 5699        let item = item?;
 5700        let leader_id = self
 5701            .pane_for(&*item)
 5702            .and_then(|pane| self.leader_for_pane(&pane));
 5703        let leader_peer_id = match leader_id {
 5704            Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 5705            Some(CollaboratorId::Agent) | None => None,
 5706        };
 5707
 5708        let item_handle = item.to_followable_item_handle(cx)?;
 5709        let id = item_handle.remote_id(&self.app_state.client, window, cx)?;
 5710        let variant = item_handle.to_state_proto(window, cx)?;
 5711
 5712        if item_handle.is_project_item(window, cx)
 5713            && (follower_project_id.is_none()
 5714                || follower_project_id != self.project.read(cx).remote_id())
 5715        {
 5716            return None;
 5717        }
 5718
 5719        Some(proto::View {
 5720            id: id.to_proto(),
 5721            leader_id: leader_peer_id,
 5722            variant: Some(variant),
 5723            panel_id: panel_id.map(|id| id as i32),
 5724        })
 5725    }
 5726
 5727    fn handle_follow(
 5728        &mut self,
 5729        follower_project_id: Option<u64>,
 5730        window: &mut Window,
 5731        cx: &mut Context<Self>,
 5732    ) -> proto::FollowResponse {
 5733        let active_view = self.active_view_for_follower(follower_project_id, window, cx);
 5734
 5735        cx.notify();
 5736        proto::FollowResponse {
 5737            views: active_view.iter().cloned().collect(),
 5738            active_view,
 5739        }
 5740    }
 5741
 5742    fn handle_update_followers(
 5743        &mut self,
 5744        leader_id: PeerId,
 5745        message: proto::UpdateFollowers,
 5746        _window: &mut Window,
 5747        _cx: &mut Context<Self>,
 5748    ) {
 5749        self.leader_updates_tx
 5750            .unbounded_send((leader_id, message))
 5751            .ok();
 5752    }
 5753
 5754    async fn process_leader_update(
 5755        this: &WeakEntity<Self>,
 5756        leader_id: PeerId,
 5757        update: proto::UpdateFollowers,
 5758        cx: &mut AsyncWindowContext,
 5759    ) -> Result<()> {
 5760        match update.variant.context("invalid update")? {
 5761            proto::update_followers::Variant::CreateView(view) => {
 5762                let view_id = ViewId::from_proto(view.id.clone().context("invalid view id")?)?;
 5763                let should_add_view = this.update(cx, |this, _| {
 5764                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 5765                        anyhow::Ok(!state.items_by_leader_view_id.contains_key(&view_id))
 5766                    } else {
 5767                        anyhow::Ok(false)
 5768                    }
 5769                })??;
 5770
 5771                if should_add_view {
 5772                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 5773                }
 5774            }
 5775            proto::update_followers::Variant::UpdateActiveView(update_active_view) => {
 5776                let should_add_view = this.update(cx, |this, _| {
 5777                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 5778                        state.active_view_id = update_active_view
 5779                            .view
 5780                            .as_ref()
 5781                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 5782
 5783                        if state.active_view_id.is_some_and(|view_id| {
 5784                            !state.items_by_leader_view_id.contains_key(&view_id)
 5785                        }) {
 5786                            anyhow::Ok(true)
 5787                        } else {
 5788                            anyhow::Ok(false)
 5789                        }
 5790                    } else {
 5791                        anyhow::Ok(false)
 5792                    }
 5793                })??;
 5794
 5795                if should_add_view && let Some(view) = update_active_view.view {
 5796                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 5797                }
 5798            }
 5799            proto::update_followers::Variant::UpdateView(update_view) => {
 5800                let variant = update_view.variant.context("missing update view variant")?;
 5801                let id = update_view.id.context("missing update view id")?;
 5802                let mut tasks = Vec::new();
 5803                this.update_in(cx, |this, window, cx| {
 5804                    let project = this.project.clone();
 5805                    if let Some(state) = this.follower_states.get(&leader_id.into()) {
 5806                        let view_id = ViewId::from_proto(id.clone())?;
 5807                        if let Some(item) = state.items_by_leader_view_id.get(&view_id) {
 5808                            tasks.push(item.view.apply_update_proto(
 5809                                &project,
 5810                                variant.clone(),
 5811                                window,
 5812                                cx,
 5813                            ));
 5814                        }
 5815                    }
 5816                    anyhow::Ok(())
 5817                })??;
 5818                try_join_all(tasks).await.log_err();
 5819            }
 5820        }
 5821        this.update_in(cx, |this, window, cx| {
 5822            this.leader_updated(leader_id, window, cx)
 5823        })?;
 5824        Ok(())
 5825    }
 5826
 5827    async fn add_view_from_leader(
 5828        this: WeakEntity<Self>,
 5829        leader_id: PeerId,
 5830        view: &proto::View,
 5831        cx: &mut AsyncWindowContext,
 5832    ) -> Result<()> {
 5833        let this = this.upgrade().context("workspace dropped")?;
 5834
 5835        let Some(id) = view.id.clone() else {
 5836            anyhow::bail!("no id for view");
 5837        };
 5838        let id = ViewId::from_proto(id)?;
 5839        let panel_id = view.panel_id.and_then(proto::PanelId::from_i32);
 5840
 5841        let pane = this.update(cx, |this, _cx| {
 5842            let state = this
 5843                .follower_states
 5844                .get(&leader_id.into())
 5845                .context("stopped following")?;
 5846            anyhow::Ok(state.pane().clone())
 5847        })?;
 5848        let existing_item = pane.update_in(cx, |pane, window, cx| {
 5849            let client = this.read(cx).client().clone();
 5850            pane.items().find_map(|item| {
 5851                let item = item.to_followable_item_handle(cx)?;
 5852                if item.remote_id(&client, window, cx) == Some(id) {
 5853                    Some(item)
 5854                } else {
 5855                    None
 5856                }
 5857            })
 5858        })?;
 5859        let item = if let Some(existing_item) = existing_item {
 5860            existing_item
 5861        } else {
 5862            let variant = view.variant.clone();
 5863            anyhow::ensure!(variant.is_some(), "missing view variant");
 5864
 5865            let task = cx.update(|window, cx| {
 5866                FollowableViewRegistry::from_state_proto(this.clone(), id, variant, window, cx)
 5867            })?;
 5868
 5869            let Some(task) = task else {
 5870                anyhow::bail!(
 5871                    "failed to construct view from leader (maybe from a different version of zed?)"
 5872                );
 5873            };
 5874
 5875            let mut new_item = task.await?;
 5876            pane.update_in(cx, |pane, window, cx| {
 5877                let mut item_to_remove = None;
 5878                for (ix, item) in pane.items().enumerate() {
 5879                    if let Some(item) = item.to_followable_item_handle(cx) {
 5880                        match new_item.dedup(item.as_ref(), window, cx) {
 5881                            Some(item::Dedup::KeepExisting) => {
 5882                                new_item =
 5883                                    item.boxed_clone().to_followable_item_handle(cx).unwrap();
 5884                                break;
 5885                            }
 5886                            Some(item::Dedup::ReplaceExisting) => {
 5887                                item_to_remove = Some((ix, item.item_id()));
 5888                                break;
 5889                            }
 5890                            None => {}
 5891                        }
 5892                    }
 5893                }
 5894
 5895                if let Some((ix, id)) = item_to_remove {
 5896                    pane.remove_item(id, false, false, window, cx);
 5897                    pane.add_item(new_item.boxed_clone(), false, false, Some(ix), window, cx);
 5898                }
 5899            })?;
 5900
 5901            new_item
 5902        };
 5903
 5904        this.update_in(cx, |this, window, cx| {
 5905            let state = this.follower_states.get_mut(&leader_id.into())?;
 5906            item.set_leader_id(Some(leader_id.into()), window, cx);
 5907            state.items_by_leader_view_id.insert(
 5908                id,
 5909                FollowerView {
 5910                    view: item,
 5911                    location: panel_id,
 5912                },
 5913            );
 5914
 5915            Some(())
 5916        })
 5917        .context("no follower state")?;
 5918
 5919        Ok(())
 5920    }
 5921
 5922    fn handle_agent_location_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5923        let Some(follower_state) = self.follower_states.get_mut(&CollaboratorId::Agent) else {
 5924            return;
 5925        };
 5926
 5927        if let Some(agent_location) = self.project.read(cx).agent_location() {
 5928            let buffer_entity_id = agent_location.buffer.entity_id();
 5929            let view_id = ViewId {
 5930                creator: CollaboratorId::Agent,
 5931                id: buffer_entity_id.as_u64(),
 5932            };
 5933            follower_state.active_view_id = Some(view_id);
 5934
 5935            let item = match follower_state.items_by_leader_view_id.entry(view_id) {
 5936                hash_map::Entry::Occupied(entry) => Some(entry.into_mut()),
 5937                hash_map::Entry::Vacant(entry) => {
 5938                    let existing_view =
 5939                        follower_state
 5940                            .center_pane
 5941                            .read(cx)
 5942                            .items()
 5943                            .find_map(|item| {
 5944                                let item = item.to_followable_item_handle(cx)?;
 5945                                if item.buffer_kind(cx) == ItemBufferKind::Singleton
 5946                                    && item.project_item_model_ids(cx).as_slice()
 5947                                        == [buffer_entity_id]
 5948                                {
 5949                                    Some(item)
 5950                                } else {
 5951                                    None
 5952                                }
 5953                            });
 5954                    let view = existing_view.or_else(|| {
 5955                        agent_location.buffer.upgrade().and_then(|buffer| {
 5956                            cx.update_default_global(|registry: &mut ProjectItemRegistry, cx| {
 5957                                registry.build_item(buffer, self.project.clone(), None, window, cx)
 5958                            })?
 5959                            .to_followable_item_handle(cx)
 5960                        })
 5961                    });
 5962
 5963                    view.map(|view| {
 5964                        entry.insert(FollowerView {
 5965                            view,
 5966                            location: None,
 5967                        })
 5968                    })
 5969                }
 5970            };
 5971
 5972            if let Some(item) = item {
 5973                item.view
 5974                    .set_leader_id(Some(CollaboratorId::Agent), window, cx);
 5975                item.view
 5976                    .update_agent_location(agent_location.position, window, cx);
 5977            }
 5978        } else {
 5979            follower_state.active_view_id = None;
 5980        }
 5981
 5982        self.leader_updated(CollaboratorId::Agent, window, cx);
 5983    }
 5984
 5985    pub fn update_active_view_for_followers(&mut self, window: &mut Window, cx: &mut App) {
 5986        let mut is_project_item = true;
 5987        let mut update = proto::UpdateActiveView::default();
 5988        if window.is_window_active() {
 5989            let (active_item, panel_id) = self.active_item_for_followers(window, cx);
 5990
 5991            if let Some(item) = active_item
 5992                && item.item_focus_handle(cx).contains_focused(window, cx)
 5993            {
 5994                let leader_id = self
 5995                    .pane_for(&*item)
 5996                    .and_then(|pane| self.leader_for_pane(&pane));
 5997                let leader_peer_id = match leader_id {
 5998                    Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 5999                    Some(CollaboratorId::Agent) | None => None,
 6000                };
 6001
 6002                if let Some(item) = item.to_followable_item_handle(cx) {
 6003                    let id = item
 6004                        .remote_id(&self.app_state.client, window, cx)
 6005                        .map(|id| id.to_proto());
 6006
 6007                    if let Some(id) = id
 6008                        && let Some(variant) = item.to_state_proto(window, cx)
 6009                    {
 6010                        let view = Some(proto::View {
 6011                            id,
 6012                            leader_id: leader_peer_id,
 6013                            variant: Some(variant),
 6014                            panel_id: panel_id.map(|id| id as i32),
 6015                        });
 6016
 6017                        is_project_item = item.is_project_item(window, cx);
 6018                        update = proto::UpdateActiveView { view };
 6019                    };
 6020                }
 6021            }
 6022        }
 6023
 6024        let active_view_id = update.view.as_ref().and_then(|view| view.id.as_ref());
 6025        if active_view_id != self.last_active_view_id.as_ref() {
 6026            self.last_active_view_id = active_view_id.cloned();
 6027            self.update_followers(
 6028                is_project_item,
 6029                proto::update_followers::Variant::UpdateActiveView(update),
 6030                window,
 6031                cx,
 6032            );
 6033        }
 6034    }
 6035
 6036    fn active_item_for_followers(
 6037        &self,
 6038        window: &mut Window,
 6039        cx: &mut App,
 6040    ) -> (Option<Box<dyn ItemHandle>>, Option<proto::PanelId>) {
 6041        let mut active_item = None;
 6042        let mut panel_id = None;
 6043        for dock in self.all_docks() {
 6044            if dock.focus_handle(cx).contains_focused(window, cx)
 6045                && let Some(panel) = dock.read(cx).active_panel()
 6046                && let Some(pane) = panel.pane(cx)
 6047                && let Some(item) = pane.read(cx).active_item()
 6048            {
 6049                active_item = Some(item);
 6050                panel_id = panel.remote_id();
 6051                break;
 6052            }
 6053        }
 6054
 6055        if active_item.is_none() {
 6056            active_item = self.active_pane().read(cx).active_item();
 6057        }
 6058        (active_item, panel_id)
 6059    }
 6060
 6061    fn update_followers(
 6062        &self,
 6063        project_only: bool,
 6064        update: proto::update_followers::Variant,
 6065        _: &mut Window,
 6066        cx: &mut App,
 6067    ) -> Option<()> {
 6068        // If this update only applies to for followers in the current project,
 6069        // then skip it unless this project is shared. If it applies to all
 6070        // followers, regardless of project, then set `project_id` to none,
 6071        // indicating that it goes to all followers.
 6072        let project_id = if project_only {
 6073            Some(self.project.read(cx).remote_id()?)
 6074        } else {
 6075            None
 6076        };
 6077        self.app_state().workspace_store.update(cx, |store, cx| {
 6078            store.update_followers(project_id, update, cx)
 6079        })
 6080    }
 6081
 6082    pub fn leader_for_pane(&self, pane: &Entity<Pane>) -> Option<CollaboratorId> {
 6083        self.follower_states.iter().find_map(|(leader_id, state)| {
 6084            if state.center_pane == *pane || state.dock_pane.as_ref() == Some(pane) {
 6085                Some(*leader_id)
 6086            } else {
 6087                None
 6088            }
 6089        })
 6090    }
 6091
 6092    fn leader_updated(
 6093        &mut self,
 6094        leader_id: impl Into<CollaboratorId>,
 6095        window: &mut Window,
 6096        cx: &mut Context<Self>,
 6097    ) -> Option<Box<dyn ItemHandle>> {
 6098        cx.notify();
 6099
 6100        let leader_id = leader_id.into();
 6101        let (panel_id, item) = match leader_id {
 6102            CollaboratorId::PeerId(peer_id) => self.active_item_for_peer(peer_id, window, cx)?,
 6103            CollaboratorId::Agent => (None, self.active_item_for_agent()?),
 6104        };
 6105
 6106        let state = self.follower_states.get(&leader_id)?;
 6107        let mut transfer_focus = state.center_pane.read(cx).has_focus(window, cx);
 6108        let pane;
 6109        if let Some(panel_id) = panel_id {
 6110            pane = self
 6111                .activate_panel_for_proto_id(panel_id, window, cx)?
 6112                .pane(cx)?;
 6113            let state = self.follower_states.get_mut(&leader_id)?;
 6114            state.dock_pane = Some(pane.clone());
 6115        } else {
 6116            pane = state.center_pane.clone();
 6117            let state = self.follower_states.get_mut(&leader_id)?;
 6118            if let Some(dock_pane) = state.dock_pane.take() {
 6119                transfer_focus |= dock_pane.focus_handle(cx).contains_focused(window, cx);
 6120            }
 6121        }
 6122
 6123        pane.update(cx, |pane, cx| {
 6124            let focus_active_item = pane.has_focus(window, cx) || transfer_focus;
 6125            if let Some(index) = pane.index_for_item(item.as_ref()) {
 6126                pane.activate_item(index, false, false, window, cx);
 6127            } else {
 6128                pane.add_item(item.boxed_clone(), false, false, None, window, cx)
 6129            }
 6130
 6131            if focus_active_item {
 6132                pane.focus_active_item(window, cx)
 6133            }
 6134        });
 6135
 6136        Some(item)
 6137    }
 6138
 6139    fn active_item_for_agent(&self) -> Option<Box<dyn ItemHandle>> {
 6140        let state = self.follower_states.get(&CollaboratorId::Agent)?;
 6141        let active_view_id = state.active_view_id?;
 6142        Some(
 6143            state
 6144                .items_by_leader_view_id
 6145                .get(&active_view_id)?
 6146                .view
 6147                .boxed_clone(),
 6148        )
 6149    }
 6150
 6151    fn active_item_for_peer(
 6152        &self,
 6153        peer_id: PeerId,
 6154        window: &mut Window,
 6155        cx: &mut Context<Self>,
 6156    ) -> Option<(Option<PanelId>, Box<dyn ItemHandle>)> {
 6157        let call = self.active_call()?;
 6158        let participant = call.remote_participant_for_peer_id(peer_id, cx)?;
 6159        let leader_in_this_app;
 6160        let leader_in_this_project;
 6161        match participant.location {
 6162            ParticipantLocation::SharedProject { project_id } => {
 6163                leader_in_this_app = true;
 6164                leader_in_this_project = Some(project_id) == self.project.read(cx).remote_id();
 6165            }
 6166            ParticipantLocation::UnsharedProject => {
 6167                leader_in_this_app = true;
 6168                leader_in_this_project = false;
 6169            }
 6170            ParticipantLocation::External => {
 6171                leader_in_this_app = false;
 6172                leader_in_this_project = false;
 6173            }
 6174        };
 6175        let state = self.follower_states.get(&peer_id.into())?;
 6176        let mut item_to_activate = None;
 6177        if let (Some(active_view_id), true) = (state.active_view_id, leader_in_this_app) {
 6178            if let Some(item) = state.items_by_leader_view_id.get(&active_view_id)
 6179                && (leader_in_this_project || !item.view.is_project_item(window, cx))
 6180            {
 6181                item_to_activate = Some((item.location, item.view.boxed_clone()));
 6182            }
 6183        } else if let Some(shared_screen) =
 6184            self.shared_screen_for_peer(peer_id, &state.center_pane, window, cx)
 6185        {
 6186            item_to_activate = Some((None, Box::new(shared_screen)));
 6187        }
 6188        item_to_activate
 6189    }
 6190
 6191    fn shared_screen_for_peer(
 6192        &self,
 6193        peer_id: PeerId,
 6194        pane: &Entity<Pane>,
 6195        window: &mut Window,
 6196        cx: &mut App,
 6197    ) -> Option<Entity<SharedScreen>> {
 6198        self.active_call()?
 6199            .create_shared_screen(peer_id, pane, window, cx)
 6200    }
 6201
 6202    pub fn on_window_activation_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 6203        if window.is_window_active() {
 6204            self.update_active_view_for_followers(window, cx);
 6205
 6206            if let Some(database_id) = self.database_id {
 6207                let db = WorkspaceDb::global(cx);
 6208                cx.background_spawn(async move { db.update_timestamp(database_id).await })
 6209                    .detach();
 6210            }
 6211        } else {
 6212            for pane in &self.panes {
 6213                pane.update(cx, |pane, cx| {
 6214                    if let Some(item) = pane.active_item() {
 6215                        item.workspace_deactivated(window, cx);
 6216                    }
 6217                    for item in pane.items() {
 6218                        if matches!(
 6219                            item.workspace_settings(cx).autosave,
 6220                            AutosaveSetting::OnWindowChange | AutosaveSetting::OnFocusChange
 6221                        ) {
 6222                            Pane::autosave_item(item.as_ref(), self.project.clone(), window, cx)
 6223                                .detach_and_log_err(cx);
 6224                        }
 6225                    }
 6226                });
 6227            }
 6228        }
 6229    }
 6230
 6231    pub fn active_call(&self) -> Option<&dyn AnyActiveCall> {
 6232        self.active_call.as_ref().map(|(call, _)| &*call.0)
 6233    }
 6234
 6235    pub fn active_global_call(&self) -> Option<GlobalAnyActiveCall> {
 6236        self.active_call.as_ref().map(|(call, _)| call.clone())
 6237    }
 6238
 6239    fn on_active_call_event(
 6240        &mut self,
 6241        event: &ActiveCallEvent,
 6242        window: &mut Window,
 6243        cx: &mut Context<Self>,
 6244    ) {
 6245        match event {
 6246            ActiveCallEvent::ParticipantLocationChanged { participant_id }
 6247            | ActiveCallEvent::RemoteVideoTracksChanged { participant_id } => {
 6248                self.leader_updated(participant_id, window, cx);
 6249            }
 6250        }
 6251    }
 6252
 6253    pub fn database_id(&self) -> Option<WorkspaceId> {
 6254        self.database_id
 6255    }
 6256
 6257    #[cfg(any(test, feature = "test-support"))]
 6258    pub(crate) fn set_database_id(&mut self, id: WorkspaceId) {
 6259        self.database_id = Some(id);
 6260    }
 6261
 6262    pub fn session_id(&self) -> Option<String> {
 6263        self.session_id.clone()
 6264    }
 6265
 6266    fn save_window_bounds(&self, window: &mut Window, cx: &mut App) -> Task<()> {
 6267        let Some(display) = window.display(cx) else {
 6268            return Task::ready(());
 6269        };
 6270        let Ok(display_uuid) = display.uuid() else {
 6271            return Task::ready(());
 6272        };
 6273
 6274        let window_bounds = window.inner_window_bounds();
 6275        let database_id = self.database_id;
 6276        let has_paths = !self.root_paths(cx).is_empty();
 6277        let db = WorkspaceDb::global(cx);
 6278        let kvp = db::kvp::KeyValueStore::global(cx);
 6279
 6280        cx.background_executor().spawn(async move {
 6281            if !has_paths {
 6282                persistence::write_default_window_bounds(&kvp, window_bounds, display_uuid)
 6283                    .await
 6284                    .log_err();
 6285            }
 6286            if let Some(database_id) = database_id {
 6287                db.set_window_open_status(
 6288                    database_id,
 6289                    SerializedWindowBounds(window_bounds),
 6290                    display_uuid,
 6291                )
 6292                .await
 6293                .log_err();
 6294            } else {
 6295                persistence::write_default_window_bounds(&kvp, window_bounds, display_uuid)
 6296                    .await
 6297                    .log_err();
 6298            }
 6299        })
 6300    }
 6301
 6302    /// Bypass the 200ms serialization throttle and write workspace state to
 6303    /// the DB immediately. Returns a task the caller can await to ensure the
 6304    /// write completes. Used by the quit handler so the most recent state
 6305    /// isn't lost to a pending throttle timer when the process exits.
 6306    pub fn flush_serialization(&mut self, window: &mut Window, cx: &mut App) -> Task<()> {
 6307        self._schedule_serialize_workspace.take();
 6308        self._serialize_workspace_task.take();
 6309        self.bounds_save_task_queued.take();
 6310
 6311        let bounds_task = self.save_window_bounds(window, cx);
 6312        let serialize_task = self.serialize_workspace_internal(window, cx);
 6313        cx.spawn(async move |_| {
 6314            bounds_task.await;
 6315            serialize_task.await;
 6316        })
 6317    }
 6318
 6319    pub fn root_paths(&self, cx: &App) -> Vec<Arc<Path>> {
 6320        let project = self.project().read(cx);
 6321        project
 6322            .visible_worktrees(cx)
 6323            .map(|worktree| worktree.read(cx).abs_path())
 6324            .collect::<Vec<_>>()
 6325    }
 6326
 6327    fn remove_panes(&mut self, member: Member, window: &mut Window, cx: &mut Context<Workspace>) {
 6328        match member {
 6329            Member::Axis(PaneAxis { members, .. }) => {
 6330                for child in members.iter() {
 6331                    self.remove_panes(child.clone(), window, cx)
 6332                }
 6333            }
 6334            Member::Pane(pane) => {
 6335                self.force_remove_pane(&pane, &None, window, cx);
 6336            }
 6337        }
 6338    }
 6339
 6340    fn remove_from_session(&mut self, window: &mut Window, cx: &mut App) -> Task<()> {
 6341        self.session_id.take();
 6342        self.serialize_workspace_internal(window, cx)
 6343    }
 6344
 6345    fn force_remove_pane(
 6346        &mut self,
 6347        pane: &Entity<Pane>,
 6348        focus_on: &Option<Entity<Pane>>,
 6349        window: &mut Window,
 6350        cx: &mut Context<Workspace>,
 6351    ) {
 6352        self.panes.retain(|p| p != pane);
 6353        if let Some(focus_on) = focus_on {
 6354            focus_on.update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx));
 6355        } else if self.active_pane() == pane {
 6356            self.panes
 6357                .last()
 6358                .unwrap()
 6359                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx));
 6360        }
 6361        if self.last_active_center_pane == Some(pane.downgrade()) {
 6362            self.last_active_center_pane = None;
 6363        }
 6364        cx.notify();
 6365    }
 6366
 6367    fn serialize_workspace(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 6368        if self._schedule_serialize_workspace.is_none() {
 6369            self._schedule_serialize_workspace =
 6370                Some(cx.spawn_in(window, async move |this, cx| {
 6371                    cx.background_executor()
 6372                        .timer(SERIALIZATION_THROTTLE_TIME)
 6373                        .await;
 6374                    this.update_in(cx, |this, window, cx| {
 6375                        this._serialize_workspace_task =
 6376                            Some(this.serialize_workspace_internal(window, cx));
 6377                        this._schedule_serialize_workspace.take();
 6378                    })
 6379                    .log_err();
 6380                }));
 6381        }
 6382    }
 6383
 6384    fn serialize_workspace_internal(&self, window: &mut Window, cx: &mut App) -> Task<()> {
 6385        let Some(database_id) = self.database_id() else {
 6386            return Task::ready(());
 6387        };
 6388
 6389        fn serialize_pane_handle(
 6390            pane_handle: &Entity<Pane>,
 6391            window: &mut Window,
 6392            cx: &mut App,
 6393        ) -> SerializedPane {
 6394            let (items, active, pinned_count) = {
 6395                let pane = pane_handle.read(cx);
 6396                let active_item_id = pane.active_item().map(|item| item.item_id());
 6397                (
 6398                    pane.items()
 6399                        .filter_map(|handle| {
 6400                            let handle = handle.to_serializable_item_handle(cx)?;
 6401
 6402                            Some(SerializedItem {
 6403                                kind: Arc::from(handle.serialized_item_kind()),
 6404                                item_id: handle.item_id().as_u64(),
 6405                                active: Some(handle.item_id()) == active_item_id,
 6406                                preview: pane.is_active_preview_item(handle.item_id()),
 6407                            })
 6408                        })
 6409                        .collect::<Vec<_>>(),
 6410                    pane.has_focus(window, cx),
 6411                    pane.pinned_count(),
 6412                )
 6413            };
 6414
 6415            SerializedPane::new(items, active, pinned_count)
 6416        }
 6417
 6418        fn build_serialized_pane_group(
 6419            pane_group: &Member,
 6420            window: &mut Window,
 6421            cx: &mut App,
 6422        ) -> SerializedPaneGroup {
 6423            match pane_group {
 6424                Member::Axis(PaneAxis {
 6425                    axis,
 6426                    members,
 6427                    flexes,
 6428                    bounding_boxes: _,
 6429                }) => SerializedPaneGroup::Group {
 6430                    axis: SerializedAxis(*axis),
 6431                    children: members
 6432                        .iter()
 6433                        .map(|member| build_serialized_pane_group(member, window, cx))
 6434                        .collect::<Vec<_>>(),
 6435                    flexes: Some(flexes.lock().clone()),
 6436                },
 6437                Member::Pane(pane_handle) => {
 6438                    SerializedPaneGroup::Pane(serialize_pane_handle(pane_handle, window, cx))
 6439                }
 6440            }
 6441        }
 6442
 6443        fn build_serialized_docks(
 6444            this: &Workspace,
 6445            window: &mut Window,
 6446            cx: &mut App,
 6447        ) -> DockStructure {
 6448            this.capture_dock_state(window, cx)
 6449        }
 6450
 6451        match self.workspace_location(cx) {
 6452            WorkspaceLocation::Location(location, paths) => {
 6453                let breakpoints = self.project.update(cx, |project, cx| {
 6454                    project
 6455                        .breakpoint_store()
 6456                        .read(cx)
 6457                        .all_source_breakpoints(cx)
 6458                });
 6459                let user_toolchains = self
 6460                    .project
 6461                    .read(cx)
 6462                    .user_toolchains(cx)
 6463                    .unwrap_or_default();
 6464
 6465                let center_group = build_serialized_pane_group(&self.center.root, window, cx);
 6466                let docks = build_serialized_docks(self, window, cx);
 6467                let window_bounds = Some(SerializedWindowBounds(window.window_bounds()));
 6468
 6469                let serialized_workspace = SerializedWorkspace {
 6470                    id: database_id,
 6471                    location,
 6472                    paths,
 6473                    center_group,
 6474                    window_bounds,
 6475                    display: Default::default(),
 6476                    docks,
 6477                    centered_layout: self.centered_layout,
 6478                    session_id: self.session_id.clone(),
 6479                    breakpoints,
 6480                    window_id: Some(window.window_handle().window_id().as_u64()),
 6481                    user_toolchains,
 6482                };
 6483
 6484                let db = WorkspaceDb::global(cx);
 6485                window.spawn(cx, async move |_| {
 6486                    db.save_workspace(serialized_workspace).await;
 6487                })
 6488            }
 6489            WorkspaceLocation::DetachFromSession => {
 6490                let window_bounds = SerializedWindowBounds(window.window_bounds());
 6491                let display = window.display(cx).and_then(|d| d.uuid().ok());
 6492                // Save dock state for empty local workspaces
 6493                let docks = build_serialized_docks(self, window, cx);
 6494                let db = WorkspaceDb::global(cx);
 6495                let kvp = db::kvp::KeyValueStore::global(cx);
 6496                window.spawn(cx, async move |_| {
 6497                    db.set_window_open_status(
 6498                        database_id,
 6499                        window_bounds,
 6500                        display.unwrap_or_default(),
 6501                    )
 6502                    .await
 6503                    .log_err();
 6504                    db.set_session_id(database_id, None).await.log_err();
 6505                    persistence::write_default_dock_state(&kvp, docks)
 6506                        .await
 6507                        .log_err();
 6508                })
 6509            }
 6510            WorkspaceLocation::None => {
 6511                // Save dock state for empty non-local workspaces
 6512                let docks = build_serialized_docks(self, window, cx);
 6513                let kvp = db::kvp::KeyValueStore::global(cx);
 6514                window.spawn(cx, async move |_| {
 6515                    persistence::write_default_dock_state(&kvp, docks)
 6516                        .await
 6517                        .log_err();
 6518                })
 6519            }
 6520        }
 6521    }
 6522
 6523    fn has_any_items_open(&self, cx: &App) -> bool {
 6524        self.panes.iter().any(|pane| pane.read(cx).items_len() > 0)
 6525    }
 6526
 6527    fn workspace_location(&self, cx: &App) -> WorkspaceLocation {
 6528        let paths = PathList::new(&self.root_paths(cx));
 6529        if let Some(connection) = self.project.read(cx).remote_connection_options(cx) {
 6530            WorkspaceLocation::Location(SerializedWorkspaceLocation::Remote(connection), paths)
 6531        } else if self.project.read(cx).is_local() {
 6532            if !paths.is_empty() || self.has_any_items_open(cx) {
 6533                WorkspaceLocation::Location(SerializedWorkspaceLocation::Local, paths)
 6534            } else {
 6535                WorkspaceLocation::DetachFromSession
 6536            }
 6537        } else {
 6538            WorkspaceLocation::None
 6539        }
 6540    }
 6541
 6542    fn update_history(&self, cx: &mut App) {
 6543        let Some(id) = self.database_id() else {
 6544            return;
 6545        };
 6546        if !self.project.read(cx).is_local() {
 6547            return;
 6548        }
 6549        if let Some(manager) = HistoryManager::global(cx) {
 6550            let paths = PathList::new(&self.root_paths(cx));
 6551            manager.update(cx, |this, cx| {
 6552                this.update_history(id, HistoryManagerEntry::new(id, &paths), cx);
 6553            });
 6554        }
 6555    }
 6556
 6557    async fn serialize_items(
 6558        this: &WeakEntity<Self>,
 6559        items_rx: UnboundedReceiver<Box<dyn SerializableItemHandle>>,
 6560        cx: &mut AsyncWindowContext,
 6561    ) -> Result<()> {
 6562        const CHUNK_SIZE: usize = 200;
 6563
 6564        let mut serializable_items = items_rx.ready_chunks(CHUNK_SIZE);
 6565
 6566        while let Some(items_received) = serializable_items.next().await {
 6567            let unique_items =
 6568                items_received
 6569                    .into_iter()
 6570                    .fold(HashMap::default(), |mut acc, item| {
 6571                        acc.entry(item.item_id()).or_insert(item);
 6572                        acc
 6573                    });
 6574
 6575            // We use into_iter() here so that the references to the items are moved into
 6576            // the tasks and not kept alive while we're sleeping.
 6577            for (_, item) in unique_items.into_iter() {
 6578                if let Ok(Some(task)) = this.update_in(cx, |workspace, window, cx| {
 6579                    item.serialize(workspace, false, window, cx)
 6580                }) {
 6581                    cx.background_spawn(async move { task.await.log_err() })
 6582                        .detach();
 6583                }
 6584            }
 6585
 6586            cx.background_executor()
 6587                .timer(SERIALIZATION_THROTTLE_TIME)
 6588                .await;
 6589        }
 6590
 6591        Ok(())
 6592    }
 6593
 6594    pub(crate) fn enqueue_item_serialization(
 6595        &mut self,
 6596        item: Box<dyn SerializableItemHandle>,
 6597    ) -> Result<()> {
 6598        self.serializable_items_tx
 6599            .unbounded_send(item)
 6600            .map_err(|err| anyhow!("failed to send serializable item over channel: {err}"))
 6601    }
 6602
 6603    pub(crate) fn load_workspace(
 6604        serialized_workspace: SerializedWorkspace,
 6605        paths_to_open: Vec<Option<ProjectPath>>,
 6606        window: &mut Window,
 6607        cx: &mut Context<Workspace>,
 6608    ) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 6609        cx.spawn_in(window, async move |workspace, cx| {
 6610            let project = workspace.read_with(cx, |workspace, _| workspace.project().clone())?;
 6611
 6612            let mut center_group = None;
 6613            let mut center_items = None;
 6614
 6615            // Traverse the splits tree and add to things
 6616            if let Some((group, active_pane, items)) = serialized_workspace
 6617                .center_group
 6618                .deserialize(&project, serialized_workspace.id, workspace.clone(), cx)
 6619                .await
 6620            {
 6621                center_items = Some(items);
 6622                center_group = Some((group, active_pane))
 6623            }
 6624
 6625            let mut items_by_project_path = HashMap::default();
 6626            let mut item_ids_by_kind = HashMap::default();
 6627            let mut all_deserialized_items = Vec::default();
 6628            cx.update(|_, cx| {
 6629                for item in center_items.unwrap_or_default().into_iter().flatten() {
 6630                    if let Some(serializable_item_handle) = item.to_serializable_item_handle(cx) {
 6631                        item_ids_by_kind
 6632                            .entry(serializable_item_handle.serialized_item_kind())
 6633                            .or_insert(Vec::new())
 6634                            .push(item.item_id().as_u64() as ItemId);
 6635                    }
 6636
 6637                    if let Some(project_path) = item.project_path(cx) {
 6638                        items_by_project_path.insert(project_path, item.clone());
 6639                    }
 6640                    all_deserialized_items.push(item);
 6641                }
 6642            })?;
 6643
 6644            let opened_items = paths_to_open
 6645                .into_iter()
 6646                .map(|path_to_open| {
 6647                    path_to_open
 6648                        .and_then(|path_to_open| items_by_project_path.remove(&path_to_open))
 6649                })
 6650                .collect::<Vec<_>>();
 6651
 6652            // Remove old panes from workspace panes list
 6653            workspace.update_in(cx, |workspace, window, cx| {
 6654                if let Some((center_group, active_pane)) = center_group {
 6655                    workspace.remove_panes(workspace.center.root.clone(), window, cx);
 6656
 6657                    // Swap workspace center group
 6658                    workspace.center = PaneGroup::with_root(center_group);
 6659                    workspace.center.set_is_center(true);
 6660                    workspace.center.mark_positions(cx);
 6661
 6662                    if let Some(active_pane) = active_pane {
 6663                        workspace.set_active_pane(&active_pane, window, cx);
 6664                        cx.focus_self(window);
 6665                    } else {
 6666                        workspace.set_active_pane(&workspace.center.first_pane(), window, cx);
 6667                    }
 6668                }
 6669
 6670                let docks = serialized_workspace.docks;
 6671
 6672                for (dock, serialized_dock) in [
 6673                    (&mut workspace.right_dock, docks.right),
 6674                    (&mut workspace.left_dock, docks.left),
 6675                    (&mut workspace.bottom_dock, docks.bottom),
 6676                ]
 6677                .iter_mut()
 6678                {
 6679                    dock.update(cx, |dock, cx| {
 6680                        dock.serialized_dock = Some(serialized_dock.clone());
 6681                        dock.restore_state(window, cx);
 6682                    });
 6683                }
 6684
 6685                cx.notify();
 6686            })?;
 6687
 6688            let _ = project
 6689                .update(cx, |project, cx| {
 6690                    project
 6691                        .breakpoint_store()
 6692                        .update(cx, |breakpoint_store, cx| {
 6693                            breakpoint_store
 6694                                .with_serialized_breakpoints(serialized_workspace.breakpoints, cx)
 6695                        })
 6696                })
 6697                .await;
 6698
 6699            // Clean up all the items that have _not_ been loaded. Our ItemIds aren't stable. That means
 6700            // after loading the items, we might have different items and in order to avoid
 6701            // the database filling up, we delete items that haven't been loaded now.
 6702            //
 6703            // The items that have been loaded, have been saved after they've been added to the workspace.
 6704            let clean_up_tasks = workspace.update_in(cx, |_, window, cx| {
 6705                item_ids_by_kind
 6706                    .into_iter()
 6707                    .map(|(item_kind, loaded_items)| {
 6708                        SerializableItemRegistry::cleanup(
 6709                            item_kind,
 6710                            serialized_workspace.id,
 6711                            loaded_items,
 6712                            window,
 6713                            cx,
 6714                        )
 6715                        .log_err()
 6716                    })
 6717                    .collect::<Vec<_>>()
 6718            })?;
 6719
 6720            futures::future::join_all(clean_up_tasks).await;
 6721
 6722            workspace
 6723                .update_in(cx, |workspace, window, cx| {
 6724                    // Serialize ourself to make sure our timestamps and any pane / item changes are replicated
 6725                    workspace.serialize_workspace_internal(window, cx).detach();
 6726
 6727                    // Ensure that we mark the window as edited if we did load dirty items
 6728                    workspace.update_window_edited(window, cx);
 6729                })
 6730                .ok();
 6731
 6732            Ok(opened_items)
 6733        })
 6734    }
 6735
 6736    pub fn key_context(&self, cx: &App) -> KeyContext {
 6737        let mut context = KeyContext::new_with_defaults();
 6738        context.add("Workspace");
 6739        context.set("keyboard_layout", cx.keyboard_layout().name().to_string());
 6740        if let Some(status) = self
 6741            .debugger_provider
 6742            .as_ref()
 6743            .and_then(|provider| provider.active_thread_state(cx))
 6744        {
 6745            match status {
 6746                ThreadStatus::Running | ThreadStatus::Stepping => {
 6747                    context.add("debugger_running");
 6748                }
 6749                ThreadStatus::Stopped => context.add("debugger_stopped"),
 6750                ThreadStatus::Exited | ThreadStatus::Ended => {}
 6751            }
 6752        }
 6753
 6754        if self.left_dock.read(cx).is_open() {
 6755            if let Some(active_panel) = self.left_dock.read(cx).active_panel() {
 6756                context.set("left_dock", active_panel.panel_key());
 6757            }
 6758        }
 6759
 6760        if self.right_dock.read(cx).is_open() {
 6761            if let Some(active_panel) = self.right_dock.read(cx).active_panel() {
 6762                context.set("right_dock", active_panel.panel_key());
 6763            }
 6764        }
 6765
 6766        if self.bottom_dock.read(cx).is_open() {
 6767            if let Some(active_panel) = self.bottom_dock.read(cx).active_panel() {
 6768                context.set("bottom_dock", active_panel.panel_key());
 6769            }
 6770        }
 6771
 6772        context
 6773    }
 6774
 6775    /// Multiworkspace uses this to add workspace action handling to itself
 6776    pub fn actions(&self, div: Div, window: &mut Window, cx: &mut Context<Self>) -> Div {
 6777        self.add_workspace_actions_listeners(div, window, cx)
 6778            .on_action(cx.listener(
 6779                |_workspace, action_sequence: &settings::ActionSequence, window, cx| {
 6780                    for action in &action_sequence.0 {
 6781                        window.dispatch_action(action.boxed_clone(), cx);
 6782                    }
 6783                },
 6784            ))
 6785            .on_action(cx.listener(Self::close_inactive_items_and_panes))
 6786            .on_action(cx.listener(Self::close_all_items_and_panes))
 6787            .on_action(cx.listener(Self::close_item_in_all_panes))
 6788            .on_action(cx.listener(Self::save_all))
 6789            .on_action(cx.listener(Self::send_keystrokes))
 6790            .on_action(cx.listener(Self::add_folder_to_project))
 6791            .on_action(cx.listener(Self::follow_next_collaborator))
 6792            .on_action(cx.listener(Self::activate_pane_at_index))
 6793            .on_action(cx.listener(Self::move_item_to_pane_at_index))
 6794            .on_action(cx.listener(Self::move_focused_panel_to_next_position))
 6795            .on_action(cx.listener(Self::toggle_edit_predictions_all_files))
 6796            .on_action(cx.listener(Self::toggle_theme_mode))
 6797            .on_action(cx.listener(|workspace, _: &Unfollow, window, cx| {
 6798                let pane = workspace.active_pane().clone();
 6799                workspace.unfollow_in_pane(&pane, window, cx);
 6800            }))
 6801            .on_action(cx.listener(|workspace, action: &Save, window, cx| {
 6802                workspace
 6803                    .save_active_item(action.save_intent.unwrap_or(SaveIntent::Save), window, cx)
 6804                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 6805            }))
 6806            .on_action(cx.listener(|workspace, _: &SaveWithoutFormat, window, cx| {
 6807                workspace
 6808                    .save_active_item(SaveIntent::SaveWithoutFormat, window, cx)
 6809                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 6810            }))
 6811            .on_action(cx.listener(|workspace, _: &SaveAs, window, cx| {
 6812                workspace
 6813                    .save_active_item(SaveIntent::SaveAs, window, cx)
 6814                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 6815            }))
 6816            .on_action(
 6817                cx.listener(|workspace, _: &ActivatePreviousPane, window, cx| {
 6818                    workspace.activate_previous_pane(window, cx)
 6819                }),
 6820            )
 6821            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 6822                workspace.activate_next_pane(window, cx)
 6823            }))
 6824            .on_action(cx.listener(|workspace, _: &ActivateLastPane, window, cx| {
 6825                workspace.activate_last_pane(window, cx)
 6826            }))
 6827            .on_action(
 6828                cx.listener(|workspace, _: &ActivateNextWindow, _window, cx| {
 6829                    workspace.activate_next_window(cx)
 6830                }),
 6831            )
 6832            .on_action(
 6833                cx.listener(|workspace, _: &ActivatePreviousWindow, _window, cx| {
 6834                    workspace.activate_previous_window(cx)
 6835                }),
 6836            )
 6837            .on_action(cx.listener(|workspace, _: &ActivatePaneLeft, window, cx| {
 6838                workspace.activate_pane_in_direction(SplitDirection::Left, window, cx)
 6839            }))
 6840            .on_action(cx.listener(|workspace, _: &ActivatePaneRight, window, cx| {
 6841                workspace.activate_pane_in_direction(SplitDirection::Right, window, cx)
 6842            }))
 6843            .on_action(cx.listener(|workspace, _: &ActivatePaneUp, window, cx| {
 6844                workspace.activate_pane_in_direction(SplitDirection::Up, window, cx)
 6845            }))
 6846            .on_action(cx.listener(|workspace, _: &ActivatePaneDown, window, cx| {
 6847                workspace.activate_pane_in_direction(SplitDirection::Down, window, cx)
 6848            }))
 6849            .on_action(cx.listener(
 6850                |workspace, action: &MoveItemToPaneInDirection, window, cx| {
 6851                    workspace.move_item_to_pane_in_direction(action, window, cx)
 6852                },
 6853            ))
 6854            .on_action(cx.listener(|workspace, _: &SwapPaneLeft, _, cx| {
 6855                workspace.swap_pane_in_direction(SplitDirection::Left, cx)
 6856            }))
 6857            .on_action(cx.listener(|workspace, _: &SwapPaneRight, _, cx| {
 6858                workspace.swap_pane_in_direction(SplitDirection::Right, cx)
 6859            }))
 6860            .on_action(cx.listener(|workspace, _: &SwapPaneUp, _, cx| {
 6861                workspace.swap_pane_in_direction(SplitDirection::Up, cx)
 6862            }))
 6863            .on_action(cx.listener(|workspace, _: &SwapPaneDown, _, cx| {
 6864                workspace.swap_pane_in_direction(SplitDirection::Down, cx)
 6865            }))
 6866            .on_action(cx.listener(|workspace, _: &SwapPaneAdjacent, window, cx| {
 6867                const DIRECTION_PRIORITY: [SplitDirection; 4] = [
 6868                    SplitDirection::Down,
 6869                    SplitDirection::Up,
 6870                    SplitDirection::Right,
 6871                    SplitDirection::Left,
 6872                ];
 6873                for dir in DIRECTION_PRIORITY {
 6874                    if workspace.find_pane_in_direction(dir, cx).is_some() {
 6875                        workspace.swap_pane_in_direction(dir, cx);
 6876                        workspace.activate_pane_in_direction(dir.opposite(), window, cx);
 6877                        break;
 6878                    }
 6879                }
 6880            }))
 6881            .on_action(cx.listener(|workspace, _: &MovePaneLeft, _, cx| {
 6882                workspace.move_pane_to_border(SplitDirection::Left, cx)
 6883            }))
 6884            .on_action(cx.listener(|workspace, _: &MovePaneRight, _, cx| {
 6885                workspace.move_pane_to_border(SplitDirection::Right, cx)
 6886            }))
 6887            .on_action(cx.listener(|workspace, _: &MovePaneUp, _, cx| {
 6888                workspace.move_pane_to_border(SplitDirection::Up, cx)
 6889            }))
 6890            .on_action(cx.listener(|workspace, _: &MovePaneDown, _, cx| {
 6891                workspace.move_pane_to_border(SplitDirection::Down, cx)
 6892            }))
 6893            .on_action(cx.listener(|this, _: &ToggleLeftDock, window, cx| {
 6894                this.toggle_dock(DockPosition::Left, window, cx);
 6895            }))
 6896            .on_action(cx.listener(
 6897                |workspace: &mut Workspace, _: &ToggleRightDock, window, cx| {
 6898                    workspace.toggle_dock(DockPosition::Right, window, cx);
 6899                },
 6900            ))
 6901            .on_action(cx.listener(
 6902                |workspace: &mut Workspace, _: &ToggleBottomDock, window, cx| {
 6903                    workspace.toggle_dock(DockPosition::Bottom, window, cx);
 6904                },
 6905            ))
 6906            .on_action(cx.listener(
 6907                |workspace: &mut Workspace, _: &CloseActiveDock, window, cx| {
 6908                    if !workspace.close_active_dock(window, cx) {
 6909                        cx.propagate();
 6910                    }
 6911                },
 6912            ))
 6913            .on_action(
 6914                cx.listener(|workspace: &mut Workspace, _: &CloseAllDocks, window, cx| {
 6915                    workspace.close_all_docks(window, cx);
 6916                }),
 6917            )
 6918            .on_action(cx.listener(Self::toggle_all_docks))
 6919            .on_action(cx.listener(
 6920                |workspace: &mut Workspace, _: &ClearAllNotifications, _, cx| {
 6921                    workspace.clear_all_notifications(cx);
 6922                },
 6923            ))
 6924            .on_action(cx.listener(
 6925                |workspace: &mut Workspace, _: &ClearNavigationHistory, window, cx| {
 6926                    workspace.clear_navigation_history(window, cx);
 6927                },
 6928            ))
 6929            .on_action(cx.listener(
 6930                |workspace: &mut Workspace, _: &SuppressNotification, _, cx| {
 6931                    if let Some((notification_id, _)) = workspace.notifications.pop() {
 6932                        workspace.suppress_notification(&notification_id, cx);
 6933                    }
 6934                },
 6935            ))
 6936            .on_action(cx.listener(
 6937                |workspace: &mut Workspace, _: &ToggleWorktreeSecurity, window, cx| {
 6938                    workspace.show_worktree_trust_security_modal(true, window, cx);
 6939                },
 6940            ))
 6941            .on_action(
 6942                cx.listener(|_: &mut Workspace, _: &ClearTrustedWorktrees, _, cx| {
 6943                    if let Some(trusted_worktrees) = TrustedWorktrees::try_get_global(cx) {
 6944                        trusted_worktrees.update(cx, |trusted_worktrees, _| {
 6945                            trusted_worktrees.clear_trusted_paths()
 6946                        });
 6947                        let db = WorkspaceDb::global(cx);
 6948                        cx.spawn(async move |_, cx| {
 6949                            if db.clear_trusted_worktrees().await.log_err().is_some() {
 6950                                cx.update(|cx| reload(cx));
 6951                            }
 6952                        })
 6953                        .detach();
 6954                    }
 6955                }),
 6956            )
 6957            .on_action(cx.listener(
 6958                |workspace: &mut Workspace, _: &ReopenClosedItem, window, cx| {
 6959                    workspace.reopen_closed_item(window, cx).detach();
 6960                },
 6961            ))
 6962            .on_action(cx.listener(
 6963                |workspace: &mut Workspace, _: &ResetActiveDockSize, window, cx| {
 6964                    for dock in workspace.all_docks() {
 6965                        if dock.focus_handle(cx).contains_focused(window, cx) {
 6966                            let panel = dock.read(cx).active_panel().cloned();
 6967                            if let Some(panel) = panel {
 6968                                dock.update(cx, |dock, cx| {
 6969                                    dock.set_panel_size_state(
 6970                                        panel.as_ref(),
 6971                                        dock::PanelSizeState::default(),
 6972                                        cx,
 6973                                    );
 6974                                });
 6975                            }
 6976                            return;
 6977                        }
 6978                    }
 6979                },
 6980            ))
 6981            .on_action(cx.listener(
 6982                |workspace: &mut Workspace, _: &ResetOpenDocksSize, _window, cx| {
 6983                    for dock in workspace.all_docks() {
 6984                        let panel = dock.read(cx).visible_panel().cloned();
 6985                        if let Some(panel) = panel {
 6986                            dock.update(cx, |dock, cx| {
 6987                                dock.set_panel_size_state(
 6988                                    panel.as_ref(),
 6989                                    dock::PanelSizeState::default(),
 6990                                    cx,
 6991                                );
 6992                            });
 6993                        }
 6994                    }
 6995                },
 6996            ))
 6997            .on_action(cx.listener(
 6998                |workspace: &mut Workspace, act: &IncreaseActiveDockSize, window, cx| {
 6999                    adjust_active_dock_size_by_px(
 7000                        px_with_ui_font_fallback(act.px, cx),
 7001                        workspace,
 7002                        window,
 7003                        cx,
 7004                    );
 7005                },
 7006            ))
 7007            .on_action(cx.listener(
 7008                |workspace: &mut Workspace, act: &DecreaseActiveDockSize, window, cx| {
 7009                    adjust_active_dock_size_by_px(
 7010                        px_with_ui_font_fallback(act.px, cx) * -1.,
 7011                        workspace,
 7012                        window,
 7013                        cx,
 7014                    );
 7015                },
 7016            ))
 7017            .on_action(cx.listener(
 7018                |workspace: &mut Workspace, act: &IncreaseOpenDocksSize, window, cx| {
 7019                    adjust_open_docks_size_by_px(
 7020                        px_with_ui_font_fallback(act.px, cx),
 7021                        workspace,
 7022                        window,
 7023                        cx,
 7024                    );
 7025                },
 7026            ))
 7027            .on_action(cx.listener(
 7028                |workspace: &mut Workspace, act: &DecreaseOpenDocksSize, window, cx| {
 7029                    adjust_open_docks_size_by_px(
 7030                        px_with_ui_font_fallback(act.px, cx) * -1.,
 7031                        workspace,
 7032                        window,
 7033                        cx,
 7034                    );
 7035                },
 7036            ))
 7037            .on_action(cx.listener(Workspace::toggle_centered_layout))
 7038            .on_action(cx.listener(
 7039                |workspace: &mut Workspace, _action: &pane::ActivateNextItem, window, cx| {
 7040                    if let Some(active_dock) = workspace.active_dock(window, cx) {
 7041                        let dock = active_dock.read(cx);
 7042                        if let Some(active_panel) = dock.active_panel() {
 7043                            if active_panel.pane(cx).is_none() {
 7044                                let mut recent_pane: Option<Entity<Pane>> = None;
 7045                                let mut recent_timestamp = 0;
 7046                                for pane_handle in workspace.panes() {
 7047                                    let pane = pane_handle.read(cx);
 7048                                    for entry in pane.activation_history() {
 7049                                        if entry.timestamp > recent_timestamp {
 7050                                            recent_timestamp = entry.timestamp;
 7051                                            recent_pane = Some(pane_handle.clone());
 7052                                        }
 7053                                    }
 7054                                }
 7055
 7056                                if let Some(pane) = recent_pane {
 7057                                    pane.update(cx, |pane, cx| {
 7058                                        let current_index = pane.active_item_index();
 7059                                        let items_len = pane.items_len();
 7060                                        if items_len > 0 {
 7061                                            let next_index = if current_index + 1 < items_len {
 7062                                                current_index + 1
 7063                                            } else {
 7064                                                0
 7065                                            };
 7066                                            pane.activate_item(
 7067                                                next_index, false, false, window, cx,
 7068                                            );
 7069                                        }
 7070                                    });
 7071                                    return;
 7072                                }
 7073                            }
 7074                        }
 7075                    }
 7076                    cx.propagate();
 7077                },
 7078            ))
 7079            .on_action(cx.listener(
 7080                |workspace: &mut Workspace, _action: &pane::ActivatePreviousItem, window, cx| {
 7081                    if let Some(active_dock) = workspace.active_dock(window, cx) {
 7082                        let dock = active_dock.read(cx);
 7083                        if let Some(active_panel) = dock.active_panel() {
 7084                            if active_panel.pane(cx).is_none() {
 7085                                let mut recent_pane: Option<Entity<Pane>> = None;
 7086                                let mut recent_timestamp = 0;
 7087                                for pane_handle in workspace.panes() {
 7088                                    let pane = pane_handle.read(cx);
 7089                                    for entry in pane.activation_history() {
 7090                                        if entry.timestamp > recent_timestamp {
 7091                                            recent_timestamp = entry.timestamp;
 7092                                            recent_pane = Some(pane_handle.clone());
 7093                                        }
 7094                                    }
 7095                                }
 7096
 7097                                if let Some(pane) = recent_pane {
 7098                                    pane.update(cx, |pane, cx| {
 7099                                        let current_index = pane.active_item_index();
 7100                                        let items_len = pane.items_len();
 7101                                        if items_len > 0 {
 7102                                            let prev_index = if current_index > 0 {
 7103                                                current_index - 1
 7104                                            } else {
 7105                                                items_len.saturating_sub(1)
 7106                                            };
 7107                                            pane.activate_item(
 7108                                                prev_index, false, false, window, cx,
 7109                                            );
 7110                                        }
 7111                                    });
 7112                                    return;
 7113                                }
 7114                            }
 7115                        }
 7116                    }
 7117                    cx.propagate();
 7118                },
 7119            ))
 7120            .on_action(cx.listener(
 7121                |workspace: &mut Workspace, action: &pane::CloseActiveItem, window, cx| {
 7122                    if let Some(active_dock) = workspace.active_dock(window, cx) {
 7123                        let dock = active_dock.read(cx);
 7124                        if let Some(active_panel) = dock.active_panel() {
 7125                            if active_panel.pane(cx).is_none() {
 7126                                let active_pane = workspace.active_pane().clone();
 7127                                active_pane.update(cx, |pane, cx| {
 7128                                    pane.close_active_item(action, window, cx)
 7129                                        .detach_and_log_err(cx);
 7130                                });
 7131                                return;
 7132                            }
 7133                        }
 7134                    }
 7135                    cx.propagate();
 7136                },
 7137            ))
 7138            .on_action(
 7139                cx.listener(|workspace, _: &ToggleReadOnlyFile, window, cx| {
 7140                    let pane = workspace.active_pane().clone();
 7141                    if let Some(item) = pane.read(cx).active_item() {
 7142                        item.toggle_read_only(window, cx);
 7143                    }
 7144                }),
 7145            )
 7146            .on_action(cx.listener(|workspace, _: &FocusCenterPane, window, cx| {
 7147                workspace.focus_center_pane(window, cx);
 7148            }))
 7149            .on_action(cx.listener(Workspace::cancel))
 7150    }
 7151
 7152    #[cfg(any(test, feature = "test-support"))]
 7153    pub fn set_random_database_id(&mut self) {
 7154        self.database_id = Some(WorkspaceId(Uuid::new_v4().as_u64_pair().0 as i64));
 7155    }
 7156
 7157    #[cfg(any(test, feature = "test-support"))]
 7158    pub(crate) fn test_new(
 7159        project: Entity<Project>,
 7160        window: &mut Window,
 7161        cx: &mut Context<Self>,
 7162    ) -> Self {
 7163        use node_runtime::NodeRuntime;
 7164        use session::Session;
 7165
 7166        let client = project.read(cx).client();
 7167        let user_store = project.read(cx).user_store();
 7168        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 7169        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 7170        window.activate_window();
 7171        let app_state = Arc::new(AppState {
 7172            languages: project.read(cx).languages().clone(),
 7173            workspace_store,
 7174            client,
 7175            user_store,
 7176            fs: project.read(cx).fs().clone(),
 7177            build_window_options: |_, _| Default::default(),
 7178            node_runtime: NodeRuntime::unavailable(),
 7179            session,
 7180        });
 7181        let workspace = Self::new(Default::default(), project, app_state, window, cx);
 7182        workspace
 7183            .active_pane
 7184            .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx));
 7185        workspace
 7186    }
 7187
 7188    pub fn register_action<A: Action>(
 7189        &mut self,
 7190        callback: impl Fn(&mut Self, &A, &mut Window, &mut Context<Self>) + 'static,
 7191    ) -> &mut Self {
 7192        let callback = Arc::new(callback);
 7193
 7194        self.workspace_actions.push(Box::new(move |div, _, _, cx| {
 7195            let callback = callback.clone();
 7196            div.on_action(cx.listener(move |workspace, event, window, cx| {
 7197                (callback)(workspace, event, window, cx)
 7198            }))
 7199        }));
 7200        self
 7201    }
 7202    pub fn register_action_renderer(
 7203        &mut self,
 7204        callback: impl Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div + 'static,
 7205    ) -> &mut Self {
 7206        self.workspace_actions.push(Box::new(callback));
 7207        self
 7208    }
 7209
 7210    fn add_workspace_actions_listeners(
 7211        &self,
 7212        mut div: Div,
 7213        window: &mut Window,
 7214        cx: &mut Context<Self>,
 7215    ) -> Div {
 7216        for action in self.workspace_actions.iter() {
 7217            div = (action)(div, self, window, cx)
 7218        }
 7219        div
 7220    }
 7221
 7222    pub fn has_active_modal(&self, _: &mut Window, cx: &mut App) -> bool {
 7223        self.modal_layer.read(cx).has_active_modal()
 7224    }
 7225
 7226    pub fn is_active_modal_command_palette(&self, cx: &mut App) -> bool {
 7227        self.modal_layer
 7228            .read(cx)
 7229            .is_active_modal_command_palette(cx)
 7230    }
 7231
 7232    pub fn active_modal<V: ManagedView + 'static>(&self, cx: &App) -> Option<Entity<V>> {
 7233        self.modal_layer.read(cx).active_modal()
 7234    }
 7235
 7236    /// Toggles a modal of type `V`. If a modal of the same type is currently active,
 7237    /// it will be hidden. If a different modal is active, it will be replaced with the new one.
 7238    /// If no modal is active, the new modal will be shown.
 7239    ///
 7240    /// If closing the current modal fails (e.g., due to `on_before_dismiss` returning
 7241    /// `DismissDecision::Dismiss(false)` or `DismissDecision::Pending`), the new modal
 7242    /// will not be shown.
 7243    pub fn toggle_modal<V: ModalView, B>(&mut self, window: &mut Window, cx: &mut App, build: B)
 7244    where
 7245        B: FnOnce(&mut Window, &mut Context<V>) -> V,
 7246    {
 7247        self.modal_layer.update(cx, |modal_layer, cx| {
 7248            modal_layer.toggle_modal(window, cx, build)
 7249        })
 7250    }
 7251
 7252    pub fn hide_modal(&mut self, window: &mut Window, cx: &mut App) -> bool {
 7253        self.modal_layer
 7254            .update(cx, |modal_layer, cx| modal_layer.hide_modal(window, cx))
 7255    }
 7256
 7257    pub fn toggle_status_toast<V: ToastView>(&mut self, entity: Entity<V>, cx: &mut App) {
 7258        self.toast_layer
 7259            .update(cx, |toast_layer, cx| toast_layer.toggle_toast(cx, entity))
 7260    }
 7261
 7262    pub fn toggle_centered_layout(
 7263        &mut self,
 7264        _: &ToggleCenteredLayout,
 7265        _: &mut Window,
 7266        cx: &mut Context<Self>,
 7267    ) {
 7268        self.centered_layout = !self.centered_layout;
 7269        if let Some(database_id) = self.database_id() {
 7270            let db = WorkspaceDb::global(cx);
 7271            let centered_layout = self.centered_layout;
 7272            cx.background_spawn(async move {
 7273                db.set_centered_layout(database_id, centered_layout).await
 7274            })
 7275            .detach_and_log_err(cx);
 7276        }
 7277        cx.notify();
 7278    }
 7279
 7280    fn adjust_padding(padding: Option<f32>) -> f32 {
 7281        padding
 7282            .unwrap_or(CenteredPaddingSettings::default().0)
 7283            .clamp(
 7284                CenteredPaddingSettings::MIN_PADDING,
 7285                CenteredPaddingSettings::MAX_PADDING,
 7286            )
 7287    }
 7288
 7289    fn render_dock(
 7290        &self,
 7291        position: DockPosition,
 7292        dock: &Entity<Dock>,
 7293        window: &mut Window,
 7294        cx: &mut App,
 7295    ) -> Option<Div> {
 7296        if self.zoomed_position == Some(position) {
 7297            return None;
 7298        }
 7299
 7300        let leader_border = dock.read(cx).active_panel().and_then(|panel| {
 7301            let pane = panel.pane(cx)?;
 7302            let follower_states = &self.follower_states;
 7303            leader_border_for_pane(follower_states, &pane, window, cx)
 7304        });
 7305
 7306        Some(
 7307            div()
 7308                .flex()
 7309                .flex_none()
 7310                .overflow_hidden()
 7311                .child(dock.clone())
 7312                .children(leader_border),
 7313        )
 7314    }
 7315
 7316    pub fn for_window(window: &Window, cx: &App) -> Option<Entity<Workspace>> {
 7317        window
 7318            .root::<MultiWorkspace>()
 7319            .flatten()
 7320            .map(|multi_workspace| multi_workspace.read(cx).workspace().clone())
 7321    }
 7322
 7323    pub fn zoomed_item(&self) -> Option<&AnyWeakView> {
 7324        self.zoomed.as_ref()
 7325    }
 7326
 7327    pub fn activate_next_window(&mut self, cx: &mut Context<Self>) {
 7328        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 7329            return;
 7330        };
 7331        let windows = cx.windows();
 7332        let next_window =
 7333            SystemWindowTabController::get_next_tab_group_window(cx, current_window_id).or_else(
 7334                || {
 7335                    windows
 7336                        .iter()
 7337                        .cycle()
 7338                        .skip_while(|window| window.window_id() != current_window_id)
 7339                        .nth(1)
 7340                },
 7341            );
 7342
 7343        if let Some(window) = next_window {
 7344            window
 7345                .update(cx, |_, window, _| window.activate_window())
 7346                .ok();
 7347        }
 7348    }
 7349
 7350    pub fn activate_previous_window(&mut self, cx: &mut Context<Self>) {
 7351        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 7352            return;
 7353        };
 7354        let windows = cx.windows();
 7355        let prev_window =
 7356            SystemWindowTabController::get_prev_tab_group_window(cx, current_window_id).or_else(
 7357                || {
 7358                    windows
 7359                        .iter()
 7360                        .rev()
 7361                        .cycle()
 7362                        .skip_while(|window| window.window_id() != current_window_id)
 7363                        .nth(1)
 7364                },
 7365            );
 7366
 7367        if let Some(window) = prev_window {
 7368            window
 7369                .update(cx, |_, window, _| window.activate_window())
 7370                .ok();
 7371        }
 7372    }
 7373
 7374    pub fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
 7375        if cx.stop_active_drag(window) {
 7376        } else if let Some((notification_id, _)) = self.notifications.pop() {
 7377            dismiss_app_notification(&notification_id, cx);
 7378        } else {
 7379            cx.propagate();
 7380        }
 7381    }
 7382
 7383    fn adjust_dock_size_by_px(
 7384        &mut self,
 7385        panel_size: Pixels,
 7386        dock_pos: DockPosition,
 7387        px: Pixels,
 7388        window: &mut Window,
 7389        cx: &mut Context<Self>,
 7390    ) {
 7391        match dock_pos {
 7392            DockPosition::Left => self.resize_left_dock(panel_size + px, window, cx),
 7393            DockPosition::Right => self.resize_right_dock(panel_size + px, window, cx),
 7394            DockPosition::Bottom => self.resize_bottom_dock(panel_size + px, window, cx),
 7395        }
 7396    }
 7397
 7398    fn resize_left_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 7399        let workspace_width = self.bounds.size.width;
 7400        let mut size = new_size.min(workspace_width - RESIZE_HANDLE_SIZE);
 7401
 7402        self.right_dock.read_with(cx, |right_dock, cx| {
 7403            let right_dock_size = right_dock
 7404                .stored_active_panel_size(window, cx)
 7405                .unwrap_or(Pixels::ZERO);
 7406            if right_dock_size + size > workspace_width {
 7407                size = workspace_width - right_dock_size
 7408            }
 7409        });
 7410
 7411        let ratio = self.flexible_dock_ratio_for_size(DockPosition::Left, size, window, cx);
 7412        self.left_dock.update(cx, |left_dock, cx| {
 7413            if WorkspaceSettings::get_global(cx)
 7414                .resize_all_panels_in_dock
 7415                .contains(&DockPosition::Left)
 7416            {
 7417                left_dock.resize_all_panels(Some(size), ratio, window, cx);
 7418            } else {
 7419                left_dock.resize_active_panel(Some(size), ratio, window, cx);
 7420            }
 7421        });
 7422    }
 7423
 7424    fn resize_right_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 7425        let workspace_width = self.bounds.size.width;
 7426        let mut size = new_size.min(workspace_width - RESIZE_HANDLE_SIZE);
 7427        self.left_dock.read_with(cx, |left_dock, cx| {
 7428            let left_dock_size = left_dock
 7429                .stored_active_panel_size(window, cx)
 7430                .unwrap_or(Pixels::ZERO);
 7431            if left_dock_size + size > workspace_width {
 7432                size = workspace_width - left_dock_size
 7433            }
 7434        });
 7435        let ratio = self.flexible_dock_ratio_for_size(DockPosition::Right, size, window, cx);
 7436        self.right_dock.update(cx, |right_dock, cx| {
 7437            if WorkspaceSettings::get_global(cx)
 7438                .resize_all_panels_in_dock
 7439                .contains(&DockPosition::Right)
 7440            {
 7441                right_dock.resize_all_panels(Some(size), ratio, window, cx);
 7442            } else {
 7443                right_dock.resize_active_panel(Some(size), ratio, window, cx);
 7444            }
 7445        });
 7446    }
 7447
 7448    fn resize_bottom_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 7449        let size = new_size.min(self.bounds.bottom() - RESIZE_HANDLE_SIZE - self.bounds.top());
 7450        self.bottom_dock.update(cx, |bottom_dock, cx| {
 7451            if WorkspaceSettings::get_global(cx)
 7452                .resize_all_panels_in_dock
 7453                .contains(&DockPosition::Bottom)
 7454            {
 7455                bottom_dock.resize_all_panels(Some(size), None, window, cx);
 7456            } else {
 7457                bottom_dock.resize_active_panel(Some(size), None, window, cx);
 7458            }
 7459        });
 7460    }
 7461
 7462    fn toggle_edit_predictions_all_files(
 7463        &mut self,
 7464        _: &ToggleEditPrediction,
 7465        _window: &mut Window,
 7466        cx: &mut Context<Self>,
 7467    ) {
 7468        let fs = self.project().read(cx).fs().clone();
 7469        let show_edit_predictions = all_language_settings(None, cx).show_edit_predictions(None, cx);
 7470        update_settings_file(fs, cx, move |file, _| {
 7471            file.project.all_languages.defaults.show_edit_predictions = Some(!show_edit_predictions)
 7472        });
 7473    }
 7474
 7475    fn toggle_theme_mode(&mut self, _: &ToggleMode, _window: &mut Window, cx: &mut Context<Self>) {
 7476        let current_mode = ThemeSettings::get_global(cx).theme.mode();
 7477        let next_mode = match current_mode {
 7478            Some(theme::ThemeAppearanceMode::Light) => theme::ThemeAppearanceMode::Dark,
 7479            Some(theme::ThemeAppearanceMode::Dark) => theme::ThemeAppearanceMode::Light,
 7480            Some(theme::ThemeAppearanceMode::System) | None => match cx.theme().appearance() {
 7481                theme::Appearance::Light => theme::ThemeAppearanceMode::Dark,
 7482                theme::Appearance::Dark => theme::ThemeAppearanceMode::Light,
 7483            },
 7484        };
 7485
 7486        let fs = self.project().read(cx).fs().clone();
 7487        settings::update_settings_file(fs, cx, move |settings, _cx| {
 7488            theme::set_mode(settings, next_mode);
 7489        });
 7490    }
 7491
 7492    pub fn show_worktree_trust_security_modal(
 7493        &mut self,
 7494        toggle: bool,
 7495        window: &mut Window,
 7496        cx: &mut Context<Self>,
 7497    ) {
 7498        if let Some(security_modal) = self.active_modal::<SecurityModal>(cx) {
 7499            if toggle {
 7500                security_modal.update(cx, |security_modal, cx| {
 7501                    security_modal.dismiss(cx);
 7502                })
 7503            } else {
 7504                security_modal.update(cx, |security_modal, cx| {
 7505                    security_modal.refresh_restricted_paths(cx);
 7506                });
 7507            }
 7508        } else {
 7509            let has_restricted_worktrees = TrustedWorktrees::try_get_global(cx)
 7510                .map(|trusted_worktrees| {
 7511                    trusted_worktrees
 7512                        .read(cx)
 7513                        .has_restricted_worktrees(&self.project().read(cx).worktree_store(), cx)
 7514                })
 7515                .unwrap_or(false);
 7516            if has_restricted_worktrees {
 7517                let project = self.project().read(cx);
 7518                let remote_host = project
 7519                    .remote_connection_options(cx)
 7520                    .map(RemoteHostLocation::from);
 7521                let worktree_store = project.worktree_store().downgrade();
 7522                self.toggle_modal(window, cx, |_, cx| {
 7523                    SecurityModal::new(worktree_store, remote_host, cx)
 7524                });
 7525            }
 7526        }
 7527    }
 7528}
 7529
 7530pub trait AnyActiveCall {
 7531    fn entity(&self) -> AnyEntity;
 7532    fn is_in_room(&self, _: &App) -> bool;
 7533    fn room_id(&self, _: &App) -> Option<u64>;
 7534    fn channel_id(&self, _: &App) -> Option<ChannelId>;
 7535    fn hang_up(&self, _: &mut App) -> Task<Result<()>>;
 7536    fn unshare_project(&self, _: Entity<Project>, _: &mut App) -> Result<()>;
 7537    fn remote_participant_for_peer_id(&self, _: PeerId, _: &App) -> Option<RemoteCollaborator>;
 7538    fn is_sharing_project(&self, _: &App) -> bool;
 7539    fn has_remote_participants(&self, _: &App) -> bool;
 7540    fn local_participant_is_guest(&self, _: &App) -> bool;
 7541    fn client(&self, _: &App) -> Arc<Client>;
 7542    fn share_on_join(&self, _: &App) -> bool;
 7543    fn join_channel(&self, _: ChannelId, _: &mut App) -> Task<Result<bool>>;
 7544    fn room_update_completed(&self, _: &mut App) -> Task<()>;
 7545    fn most_active_project(&self, _: &App) -> Option<(u64, u64)>;
 7546    fn share_project(&self, _: Entity<Project>, _: &mut App) -> Task<Result<u64>>;
 7547    fn join_project(
 7548        &self,
 7549        _: u64,
 7550        _: Arc<LanguageRegistry>,
 7551        _: Arc<dyn Fs>,
 7552        _: &mut App,
 7553    ) -> Task<Result<Entity<Project>>>;
 7554    fn peer_id_for_user_in_room(&self, _: u64, _: &App) -> Option<PeerId>;
 7555    fn subscribe(
 7556        &self,
 7557        _: &mut Window,
 7558        _: &mut Context<Workspace>,
 7559        _: Box<dyn Fn(&mut Workspace, &ActiveCallEvent, &mut Window, &mut Context<Workspace>)>,
 7560    ) -> Subscription;
 7561    fn create_shared_screen(
 7562        &self,
 7563        _: PeerId,
 7564        _: &Entity<Pane>,
 7565        _: &mut Window,
 7566        _: &mut App,
 7567    ) -> Option<Entity<SharedScreen>>;
 7568}
 7569
 7570#[derive(Clone)]
 7571pub struct GlobalAnyActiveCall(pub Arc<dyn AnyActiveCall>);
 7572impl Global for GlobalAnyActiveCall {}
 7573
 7574impl GlobalAnyActiveCall {
 7575    pub(crate) fn try_global(cx: &App) -> Option<&Self> {
 7576        cx.try_global()
 7577    }
 7578
 7579    pub(crate) fn global(cx: &App) -> &Self {
 7580        cx.global()
 7581    }
 7582}
 7583
 7584pub fn merge_conflict_notification_id() -> NotificationId {
 7585    struct MergeConflictNotification;
 7586    NotificationId::unique::<MergeConflictNotification>()
 7587}
 7588
 7589/// Workspace-local view of a remote participant's location.
 7590#[derive(Clone, Copy, Debug, PartialEq, Eq)]
 7591pub enum ParticipantLocation {
 7592    SharedProject { project_id: u64 },
 7593    UnsharedProject,
 7594    External,
 7595}
 7596
 7597impl ParticipantLocation {
 7598    pub fn from_proto(location: Option<proto::ParticipantLocation>) -> Result<Self> {
 7599        match location
 7600            .and_then(|l| l.variant)
 7601            .context("participant location was not provided")?
 7602        {
 7603            proto::participant_location::Variant::SharedProject(project) => {
 7604                Ok(Self::SharedProject {
 7605                    project_id: project.id,
 7606                })
 7607            }
 7608            proto::participant_location::Variant::UnsharedProject(_) => Ok(Self::UnsharedProject),
 7609            proto::participant_location::Variant::External(_) => Ok(Self::External),
 7610        }
 7611    }
 7612}
 7613/// Workspace-local view of a remote collaborator's state.
 7614/// This is the subset of `call::RemoteParticipant` that workspace needs.
 7615#[derive(Clone)]
 7616pub struct RemoteCollaborator {
 7617    pub user: Arc<User>,
 7618    pub peer_id: PeerId,
 7619    pub location: ParticipantLocation,
 7620    pub participant_index: ParticipantIndex,
 7621}
 7622
 7623pub enum ActiveCallEvent {
 7624    ParticipantLocationChanged { participant_id: PeerId },
 7625    RemoteVideoTracksChanged { participant_id: PeerId },
 7626}
 7627
 7628fn leader_border_for_pane(
 7629    follower_states: &HashMap<CollaboratorId, FollowerState>,
 7630    pane: &Entity<Pane>,
 7631    _: &Window,
 7632    cx: &App,
 7633) -> Option<Div> {
 7634    let (leader_id, _follower_state) = follower_states.iter().find_map(|(leader_id, state)| {
 7635        if state.pane() == pane {
 7636            Some((*leader_id, state))
 7637        } else {
 7638            None
 7639        }
 7640    })?;
 7641
 7642    let mut leader_color = match leader_id {
 7643        CollaboratorId::PeerId(leader_peer_id) => {
 7644            let leader = GlobalAnyActiveCall::try_global(cx)?
 7645                .0
 7646                .remote_participant_for_peer_id(leader_peer_id, cx)?;
 7647
 7648            cx.theme()
 7649                .players()
 7650                .color_for_participant(leader.participant_index.0)
 7651                .cursor
 7652        }
 7653        CollaboratorId::Agent => cx.theme().players().agent().cursor,
 7654    };
 7655    leader_color.fade_out(0.3);
 7656    Some(
 7657        div()
 7658            .absolute()
 7659            .size_full()
 7660            .left_0()
 7661            .top_0()
 7662            .border_2()
 7663            .border_color(leader_color),
 7664    )
 7665}
 7666
 7667fn window_bounds_env_override() -> Option<Bounds<Pixels>> {
 7668    ZED_WINDOW_POSITION
 7669        .zip(*ZED_WINDOW_SIZE)
 7670        .map(|(position, size)| Bounds {
 7671            origin: position,
 7672            size,
 7673        })
 7674}
 7675
 7676fn open_items(
 7677    serialized_workspace: Option<SerializedWorkspace>,
 7678    mut project_paths_to_open: Vec<(PathBuf, Option<ProjectPath>)>,
 7679    window: &mut Window,
 7680    cx: &mut Context<Workspace>,
 7681) -> impl 'static + Future<Output = Result<Vec<Option<Result<Box<dyn ItemHandle>>>>>> + use<> {
 7682    let restored_items = serialized_workspace.map(|serialized_workspace| {
 7683        Workspace::load_workspace(
 7684            serialized_workspace,
 7685            project_paths_to_open
 7686                .iter()
 7687                .map(|(_, project_path)| project_path)
 7688                .cloned()
 7689                .collect(),
 7690            window,
 7691            cx,
 7692        )
 7693    });
 7694
 7695    cx.spawn_in(window, async move |workspace, cx| {
 7696        let mut opened_items = Vec::with_capacity(project_paths_to_open.len());
 7697
 7698        if let Some(restored_items) = restored_items {
 7699            let restored_items = restored_items.await?;
 7700
 7701            let restored_project_paths = restored_items
 7702                .iter()
 7703                .filter_map(|item| {
 7704                    cx.update(|_, cx| item.as_ref()?.project_path(cx))
 7705                        .ok()
 7706                        .flatten()
 7707                })
 7708                .collect::<HashSet<_>>();
 7709
 7710            for restored_item in restored_items {
 7711                opened_items.push(restored_item.map(Ok));
 7712            }
 7713
 7714            project_paths_to_open
 7715                .iter_mut()
 7716                .for_each(|(_, project_path)| {
 7717                    if let Some(project_path_to_open) = project_path
 7718                        && restored_project_paths.contains(project_path_to_open)
 7719                    {
 7720                        *project_path = None;
 7721                    }
 7722                });
 7723        } else {
 7724            for _ in 0..project_paths_to_open.len() {
 7725                opened_items.push(None);
 7726            }
 7727        }
 7728        assert!(opened_items.len() == project_paths_to_open.len());
 7729
 7730        let tasks =
 7731            project_paths_to_open
 7732                .into_iter()
 7733                .enumerate()
 7734                .map(|(ix, (abs_path, project_path))| {
 7735                    let workspace = workspace.clone();
 7736                    cx.spawn(async move |cx| {
 7737                        let file_project_path = project_path?;
 7738                        let abs_path_task = workspace.update(cx, |workspace, cx| {
 7739                            workspace.project().update(cx, |project, cx| {
 7740                                project.resolve_abs_path(abs_path.to_string_lossy().as_ref(), cx)
 7741                            })
 7742                        });
 7743
 7744                        // We only want to open file paths here. If one of the items
 7745                        // here is a directory, it was already opened further above
 7746                        // with a `find_or_create_worktree`.
 7747                        if let Ok(task) = abs_path_task
 7748                            && task.await.is_none_or(|p| p.is_file())
 7749                        {
 7750                            return Some((
 7751                                ix,
 7752                                workspace
 7753                                    .update_in(cx, |workspace, window, cx| {
 7754                                        workspace.open_path(
 7755                                            file_project_path,
 7756                                            None,
 7757                                            true,
 7758                                            window,
 7759                                            cx,
 7760                                        )
 7761                                    })
 7762                                    .log_err()?
 7763                                    .await,
 7764                            ));
 7765                        }
 7766                        None
 7767                    })
 7768                });
 7769
 7770        let tasks = tasks.collect::<Vec<_>>();
 7771
 7772        let tasks = futures::future::join_all(tasks);
 7773        for (ix, path_open_result) in tasks.await.into_iter().flatten() {
 7774            opened_items[ix] = Some(path_open_result);
 7775        }
 7776
 7777        Ok(opened_items)
 7778    })
 7779}
 7780
 7781#[derive(Clone)]
 7782enum ActivateInDirectionTarget {
 7783    Pane(Entity<Pane>),
 7784    Dock(Entity<Dock>),
 7785    Sidebar(FocusHandle),
 7786}
 7787
 7788fn notify_if_database_failed(window: WindowHandle<MultiWorkspace>, cx: &mut AsyncApp) {
 7789    window
 7790        .update(cx, |multi_workspace, _, cx| {
 7791            let workspace = multi_workspace.workspace().clone();
 7792            workspace.update(cx, |workspace, cx| {
 7793                if (*db::ALL_FILE_DB_FAILED).load(std::sync::atomic::Ordering::Acquire) {
 7794                    struct DatabaseFailedNotification;
 7795
 7796                    workspace.show_notification(
 7797                        NotificationId::unique::<DatabaseFailedNotification>(),
 7798                        cx,
 7799                        |cx| {
 7800                            cx.new(|cx| {
 7801                                MessageNotification::new("Failed to load the database file.", cx)
 7802                                    .primary_message("File an Issue")
 7803                                    .primary_icon(IconName::Plus)
 7804                                    .primary_on_click(|window, cx| {
 7805                                        window.dispatch_action(Box::new(FileBugReport), cx)
 7806                                    })
 7807                            })
 7808                        },
 7809                    );
 7810                }
 7811            });
 7812        })
 7813        .log_err();
 7814}
 7815
 7816fn px_with_ui_font_fallback(val: u32, cx: &Context<Workspace>) -> Pixels {
 7817    if val == 0 {
 7818        ThemeSettings::get_global(cx).ui_font_size(cx)
 7819    } else {
 7820        px(val as f32)
 7821    }
 7822}
 7823
 7824fn adjust_active_dock_size_by_px(
 7825    px: Pixels,
 7826    workspace: &mut Workspace,
 7827    window: &mut Window,
 7828    cx: &mut Context<Workspace>,
 7829) {
 7830    let Some(active_dock) = workspace
 7831        .all_docks()
 7832        .into_iter()
 7833        .find(|dock| dock.focus_handle(cx).contains_focused(window, cx))
 7834    else {
 7835        return;
 7836    };
 7837    let dock = active_dock.read(cx);
 7838    let Some(panel_size) = dock
 7839        .active_panel()
 7840        .map(|panel| workspace.resolved_dock_panel_size(&dock, panel.as_ref(), window, cx))
 7841    else {
 7842        return;
 7843    };
 7844    let dock_pos = dock.position();
 7845    workspace.adjust_dock_size_by_px(panel_size, dock_pos, px, window, cx);
 7846}
 7847
 7848fn adjust_open_docks_size_by_px(
 7849    px: Pixels,
 7850    workspace: &mut Workspace,
 7851    window: &mut Window,
 7852    cx: &mut Context<Workspace>,
 7853) {
 7854    let docks = workspace
 7855        .all_docks()
 7856        .into_iter()
 7857        .filter_map(|dock_entity| {
 7858            let dock = dock_entity.read(cx);
 7859            if dock.is_open() {
 7860                let panel_size = dock.active_panel().map(|panel| {
 7861                    workspace.resolved_dock_panel_size(&dock, panel.as_ref(), window, cx)
 7862                })?;
 7863                let dock_pos = dock.position();
 7864                Some((panel_size, dock_pos, px))
 7865            } else {
 7866                None
 7867            }
 7868        })
 7869        .collect::<Vec<_>>();
 7870
 7871    docks
 7872        .into_iter()
 7873        .for_each(|(panel_size, dock_pos, offset)| {
 7874            workspace.adjust_dock_size_by_px(panel_size, dock_pos, offset, window, cx);
 7875        });
 7876}
 7877
 7878impl Focusable for Workspace {
 7879    fn focus_handle(&self, cx: &App) -> FocusHandle {
 7880        self.active_pane.focus_handle(cx)
 7881    }
 7882}
 7883
 7884#[derive(Clone)]
 7885struct DraggedDock(DockPosition);
 7886
 7887impl Render for DraggedDock {
 7888    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
 7889        gpui::Empty
 7890    }
 7891}
 7892
 7893impl Render for Workspace {
 7894    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 7895        static FIRST_PAINT: AtomicBool = AtomicBool::new(true);
 7896        if FIRST_PAINT.swap(false, std::sync::atomic::Ordering::Relaxed) {
 7897            log::info!("Rendered first frame");
 7898        }
 7899
 7900        let centered_layout = self.centered_layout
 7901            && self.center.panes().len() == 1
 7902            && self.active_item(cx).is_some();
 7903        let render_padding = |size| {
 7904            (size > 0.0).then(|| {
 7905                div()
 7906                    .h_full()
 7907                    .w(relative(size))
 7908                    .bg(cx.theme().colors().editor_background)
 7909                    .border_color(cx.theme().colors().pane_group_border)
 7910            })
 7911        };
 7912        let paddings = if centered_layout {
 7913            let settings = WorkspaceSettings::get_global(cx).centered_layout;
 7914            (
 7915                render_padding(Self::adjust_padding(
 7916                    settings.left_padding.map(|padding| padding.0),
 7917                )),
 7918                render_padding(Self::adjust_padding(
 7919                    settings.right_padding.map(|padding| padding.0),
 7920                )),
 7921            )
 7922        } else {
 7923            (None, None)
 7924        };
 7925        let ui_font = theme::setup_ui_font(window, cx);
 7926
 7927        let theme = cx.theme().clone();
 7928        let colors = theme.colors();
 7929        let notification_entities = self
 7930            .notifications
 7931            .iter()
 7932            .map(|(_, notification)| notification.entity_id())
 7933            .collect::<Vec<_>>();
 7934        let bottom_dock_layout = WorkspaceSettings::get_global(cx).bottom_dock_layout;
 7935
 7936        div()
 7937            .relative()
 7938            .size_full()
 7939            .flex()
 7940            .flex_col()
 7941            .font(ui_font)
 7942            .gap_0()
 7943                .justify_start()
 7944                .items_start()
 7945                .text_color(colors.text)
 7946                .overflow_hidden()
 7947                .children(self.titlebar_item.clone())
 7948                .on_modifiers_changed(move |_, _, cx| {
 7949                    for &id in &notification_entities {
 7950                        cx.notify(id);
 7951                    }
 7952                })
 7953                .child(
 7954                    div()
 7955                        .size_full()
 7956                        .relative()
 7957                        .flex_1()
 7958                        .flex()
 7959                        .flex_col()
 7960                        .child(
 7961                            div()
 7962                                .id("workspace")
 7963                                .bg(colors.background)
 7964                                .relative()
 7965                                .flex_1()
 7966                                .w_full()
 7967                                .flex()
 7968                                .flex_col()
 7969                                .overflow_hidden()
 7970                                .border_t_1()
 7971                                .border_b_1()
 7972                                .border_color(colors.border)
 7973                                .child({
 7974                                    let this = cx.entity();
 7975                                    canvas(
 7976                                        move |bounds, window, cx| {
 7977                                            this.update(cx, |this, cx| {
 7978                                                let bounds_changed = this.bounds != bounds;
 7979                                                this.bounds = bounds;
 7980
 7981                                                if bounds_changed {
 7982                                                    this.left_dock.update(cx, |dock, cx| {
 7983                                                        dock.clamp_panel_size(
 7984                                                            bounds.size.width,
 7985                                                            window,
 7986                                                            cx,
 7987                                                        )
 7988                                                    });
 7989
 7990                                                    this.right_dock.update(cx, |dock, cx| {
 7991                                                        dock.clamp_panel_size(
 7992                                                            bounds.size.width,
 7993                                                            window,
 7994                                                            cx,
 7995                                                        )
 7996                                                    });
 7997
 7998                                                    this.bottom_dock.update(cx, |dock, cx| {
 7999                                                        dock.clamp_panel_size(
 8000                                                            bounds.size.height,
 8001                                                            window,
 8002                                                            cx,
 8003                                                        )
 8004                                                    });
 8005                                                }
 8006                                            })
 8007                                        },
 8008                                        |_, _, _, _| {},
 8009                                    )
 8010                                    .absolute()
 8011                                    .size_full()
 8012                                })
 8013                                .when(self.zoomed.is_none(), |this| {
 8014                                    this.on_drag_move(cx.listener(
 8015                                        move |workspace,
 8016                                              e: &DragMoveEvent<DraggedDock>,
 8017                                              window,
 8018                                              cx| {
 8019                                            if workspace.previous_dock_drag_coordinates
 8020                                                != Some(e.event.position)
 8021                                            {
 8022                                                workspace.previous_dock_drag_coordinates =
 8023                                                    Some(e.event.position);
 8024
 8025                                                match e.drag(cx).0 {
 8026                                                    DockPosition::Left => {
 8027                                                        workspace.resize_left_dock(
 8028                                                            e.event.position.x
 8029                                                                - workspace.bounds.left(),
 8030                                                            window,
 8031                                                            cx,
 8032                                                        );
 8033                                                    }
 8034                                                    DockPosition::Right => {
 8035                                                        workspace.resize_right_dock(
 8036                                                            workspace.bounds.right()
 8037                                                                - e.event.position.x,
 8038                                                            window,
 8039                                                            cx,
 8040                                                        );
 8041                                                    }
 8042                                                    DockPosition::Bottom => {
 8043                                                        workspace.resize_bottom_dock(
 8044                                                            workspace.bounds.bottom()
 8045                                                                - e.event.position.y,
 8046                                                            window,
 8047                                                            cx,
 8048                                                        );
 8049                                                    }
 8050                                                };
 8051                                                workspace.serialize_workspace(window, cx);
 8052                                            }
 8053                                        },
 8054                                    ))
 8055
 8056                                })
 8057                                .child({
 8058                                    match bottom_dock_layout {
 8059                                        BottomDockLayout::Full => div()
 8060                                            .flex()
 8061                                            .flex_col()
 8062                                            .h_full()
 8063                                            .child(
 8064                                                div()
 8065                                                    .flex()
 8066                                                    .flex_row()
 8067                                                    .flex_1()
 8068                                                    .overflow_hidden()
 8069                                                    .children(self.render_dock(
 8070                                                        DockPosition::Left,
 8071                                                        &self.left_dock,
 8072                                                        window,
 8073                                                        cx,
 8074                                                    ))
 8075
 8076                                                    .child(
 8077                                                        div()
 8078                                                            .flex()
 8079                                                            .flex_col()
 8080                                                            .flex_1()
 8081                                                            .overflow_hidden()
 8082                                                            .child(
 8083                                                                h_flex()
 8084                                                                    .flex_1()
 8085                                                                    .when_some(
 8086                                                                        paddings.0,
 8087                                                                        |this, p| {
 8088                                                                            this.child(
 8089                                                                                p.border_r_1(),
 8090                                                                            )
 8091                                                                        },
 8092                                                                    )
 8093                                                                    .child(self.center.render(
 8094                                                                        self.zoomed.as_ref(),
 8095                                                                        &PaneRenderContext {
 8096                                                                            follower_states:
 8097                                                                                &self.follower_states,
 8098                                                                            active_call: self.active_call(),
 8099                                                                            active_pane: &self.active_pane,
 8100                                                                            app_state: &self.app_state,
 8101                                                                            project: &self.project,
 8102                                                                            workspace: &self.weak_self,
 8103                                                                        },
 8104                                                                        window,
 8105                                                                        cx,
 8106                                                                    ))
 8107                                                                    .when_some(
 8108                                                                        paddings.1,
 8109                                                                        |this, p| {
 8110                                                                            this.child(
 8111                                                                                p.border_l_1(),
 8112                                                                            )
 8113                                                                        },
 8114                                                                    ),
 8115                                                            ),
 8116                                                    )
 8117
 8118                                                    .children(self.render_dock(
 8119                                                        DockPosition::Right,
 8120                                                        &self.right_dock,
 8121                                                        window,
 8122                                                        cx,
 8123                                                    )),
 8124                                            )
 8125                                            .child(div().w_full().children(self.render_dock(
 8126                                                DockPosition::Bottom,
 8127                                                &self.bottom_dock,
 8128                                                window,
 8129                                                cx
 8130                                            ))),
 8131
 8132                                        BottomDockLayout::LeftAligned => div()
 8133                                            .flex()
 8134                                            .flex_row()
 8135                                            .h_full()
 8136                                            .child(
 8137                                                div()
 8138                                                    .flex()
 8139                                                    .flex_col()
 8140                                                    .flex_1()
 8141                                                    .h_full()
 8142                                                    .child(
 8143                                                        div()
 8144                                                            .flex()
 8145                                                            .flex_row()
 8146                                                            .flex_1()
 8147                                                            .children(self.render_dock(DockPosition::Left, &self.left_dock, window, cx))
 8148
 8149                                                            .child(
 8150                                                                div()
 8151                                                                    .flex()
 8152                                                                    .flex_col()
 8153                                                                    .flex_1()
 8154                                                                    .overflow_hidden()
 8155                                                                    .child(
 8156                                                                        h_flex()
 8157                                                                            .flex_1()
 8158                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 8159                                                                            .child(self.center.render(
 8160                                                                                self.zoomed.as_ref(),
 8161                                                                                &PaneRenderContext {
 8162                                                                                    follower_states:
 8163                                                                                        &self.follower_states,
 8164                                                                                    active_call: self.active_call(),
 8165                                                                                    active_pane: &self.active_pane,
 8166                                                                                    app_state: &self.app_state,
 8167                                                                                    project: &self.project,
 8168                                                                                    workspace: &self.weak_self,
 8169                                                                                },
 8170                                                                                window,
 8171                                                                                cx,
 8172                                                                            ))
 8173                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 8174                                                                    )
 8175                                                            )
 8176
 8177                                                    )
 8178                                                    .child(
 8179                                                        div()
 8180                                                            .w_full()
 8181                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 8182                                                    ),
 8183                                            )
 8184                                            .children(self.render_dock(
 8185                                                DockPosition::Right,
 8186                                                &self.right_dock,
 8187                                                window,
 8188                                                cx,
 8189                                            )),
 8190                                        BottomDockLayout::RightAligned => div()
 8191                                            .flex()
 8192                                            .flex_row()
 8193                                            .h_full()
 8194                                            .children(self.render_dock(
 8195                                                DockPosition::Left,
 8196                                                &self.left_dock,
 8197                                                window,
 8198                                                cx,
 8199                                            ))
 8200
 8201                                            .child(
 8202                                                div()
 8203                                                    .flex()
 8204                                                    .flex_col()
 8205                                                    .flex_1()
 8206                                                    .h_full()
 8207                                                    .child(
 8208                                                        div()
 8209                                                            .flex()
 8210                                                            .flex_row()
 8211                                                            .flex_1()
 8212                                                            .child(
 8213                                                                div()
 8214                                                                    .flex()
 8215                                                                    .flex_col()
 8216                                                                    .flex_1()
 8217                                                                    .overflow_hidden()
 8218                                                                    .child(
 8219                                                                        h_flex()
 8220                                                                            .flex_1()
 8221                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 8222                                                                            .child(self.center.render(
 8223                                                                                self.zoomed.as_ref(),
 8224                                                                                &PaneRenderContext {
 8225                                                                                    follower_states:
 8226                                                                                        &self.follower_states,
 8227                                                                                    active_call: self.active_call(),
 8228                                                                                    active_pane: &self.active_pane,
 8229                                                                                    app_state: &self.app_state,
 8230                                                                                    project: &self.project,
 8231                                                                                    workspace: &self.weak_self,
 8232                                                                                },
 8233                                                                                window,
 8234                                                                                cx,
 8235                                                                            ))
 8236                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 8237                                                                    )
 8238                                                            )
 8239
 8240                                                            .children(self.render_dock(DockPosition::Right, &self.right_dock, window, cx))
 8241                                                    )
 8242                                                    .child(
 8243                                                        div()
 8244                                                            .w_full()
 8245                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 8246                                                    ),
 8247                                            ),
 8248                                        BottomDockLayout::Contained => div()
 8249                                            .flex()
 8250                                            .flex_row()
 8251                                            .h_full()
 8252                                            .children(self.render_dock(
 8253                                                DockPosition::Left,
 8254                                                &self.left_dock,
 8255                                                window,
 8256                                                cx,
 8257                                            ))
 8258
 8259                                            .child(
 8260                                                div()
 8261                                                    .flex()
 8262                                                    .flex_col()
 8263                                                    .flex_1()
 8264                                                    .overflow_hidden()
 8265                                                    .child(
 8266                                                        h_flex()
 8267                                                            .flex_1()
 8268                                                            .when_some(paddings.0, |this, p| {
 8269                                                                this.child(p.border_r_1())
 8270                                                            })
 8271                                                            .child(self.center.render(
 8272                                                                self.zoomed.as_ref(),
 8273                                                                &PaneRenderContext {
 8274                                                                    follower_states:
 8275                                                                        &self.follower_states,
 8276                                                                    active_call: self.active_call(),
 8277                                                                    active_pane: &self.active_pane,
 8278                                                                    app_state: &self.app_state,
 8279                                                                    project: &self.project,
 8280                                                                    workspace: &self.weak_self,
 8281                                                                },
 8282                                                                window,
 8283                                                                cx,
 8284                                                            ))
 8285                                                            .when_some(paddings.1, |this, p| {
 8286                                                                this.child(p.border_l_1())
 8287                                                            }),
 8288                                                    )
 8289                                                    .children(self.render_dock(
 8290                                                        DockPosition::Bottom,
 8291                                                        &self.bottom_dock,
 8292                                                        window,
 8293                                                        cx,
 8294                                                    )),
 8295                                            )
 8296
 8297                                            .children(self.render_dock(
 8298                                                DockPosition::Right,
 8299                                                &self.right_dock,
 8300                                                window,
 8301                                                cx,
 8302                                            )),
 8303                                    }
 8304                                })
 8305                                .children(self.zoomed.as_ref().and_then(|view| {
 8306                                    let zoomed_view = view.upgrade()?;
 8307                                    let div = div()
 8308                                        .occlude()
 8309                                        .absolute()
 8310                                        .overflow_hidden()
 8311                                        .border_color(colors.border)
 8312                                        .bg(colors.background)
 8313                                        .child(zoomed_view)
 8314                                        .inset_0()
 8315                                        .shadow_lg();
 8316
 8317                                    if !WorkspaceSettings::get_global(cx).zoomed_padding {
 8318                                       return Some(div);
 8319                                    }
 8320
 8321                                    Some(match self.zoomed_position {
 8322                                        Some(DockPosition::Left) => div.right_2().border_r_1(),
 8323                                        Some(DockPosition::Right) => div.left_2().border_l_1(),
 8324                                        Some(DockPosition::Bottom) => div.top_2().border_t_1(),
 8325                                        None => {
 8326                                            div.top_2().bottom_2().left_2().right_2().border_1()
 8327                                        }
 8328                                    })
 8329                                }))
 8330                                .children(self.render_notifications(window, cx)),
 8331                        )
 8332                        .when(self.status_bar_visible(cx), |parent| {
 8333                            parent.child(self.status_bar.clone())
 8334                        })
 8335                        .child(self.toast_layer.clone()),
 8336                )
 8337    }
 8338}
 8339
 8340impl WorkspaceStore {
 8341    pub fn new(client: Arc<Client>, cx: &mut Context<Self>) -> Self {
 8342        Self {
 8343            workspaces: Default::default(),
 8344            _subscriptions: vec![
 8345                client.add_request_handler(cx.weak_entity(), Self::handle_follow),
 8346                client.add_message_handler(cx.weak_entity(), Self::handle_update_followers),
 8347            ],
 8348            client,
 8349        }
 8350    }
 8351
 8352    pub fn update_followers(
 8353        &self,
 8354        project_id: Option<u64>,
 8355        update: proto::update_followers::Variant,
 8356        cx: &App,
 8357    ) -> Option<()> {
 8358        let active_call = GlobalAnyActiveCall::try_global(cx)?;
 8359        let room_id = active_call.0.room_id(cx)?;
 8360        self.client
 8361            .send(proto::UpdateFollowers {
 8362                room_id,
 8363                project_id,
 8364                variant: Some(update),
 8365            })
 8366            .log_err()
 8367    }
 8368
 8369    pub async fn handle_follow(
 8370        this: Entity<Self>,
 8371        envelope: TypedEnvelope<proto::Follow>,
 8372        mut cx: AsyncApp,
 8373    ) -> Result<proto::FollowResponse> {
 8374        this.update(&mut cx, |this, cx| {
 8375            let follower = Follower {
 8376                project_id: envelope.payload.project_id,
 8377                peer_id: envelope.original_sender_id()?,
 8378            };
 8379
 8380            let mut response = proto::FollowResponse::default();
 8381
 8382            this.workspaces.retain(|(window_handle, weak_workspace)| {
 8383                let Some(workspace) = weak_workspace.upgrade() else {
 8384                    return false;
 8385                };
 8386                window_handle
 8387                    .update(cx, |_, window, cx| {
 8388                        workspace.update(cx, |workspace, cx| {
 8389                            let handler_response =
 8390                                workspace.handle_follow(follower.project_id, window, cx);
 8391                            if let Some(active_view) = handler_response.active_view
 8392                                && workspace.project.read(cx).remote_id() == follower.project_id
 8393                            {
 8394                                response.active_view = Some(active_view)
 8395                            }
 8396                        });
 8397                    })
 8398                    .is_ok()
 8399            });
 8400
 8401            Ok(response)
 8402        })
 8403    }
 8404
 8405    async fn handle_update_followers(
 8406        this: Entity<Self>,
 8407        envelope: TypedEnvelope<proto::UpdateFollowers>,
 8408        mut cx: AsyncApp,
 8409    ) -> Result<()> {
 8410        let leader_id = envelope.original_sender_id()?;
 8411        let update = envelope.payload;
 8412
 8413        this.update(&mut cx, |this, cx| {
 8414            this.workspaces.retain(|(window_handle, weak_workspace)| {
 8415                let Some(workspace) = weak_workspace.upgrade() else {
 8416                    return false;
 8417                };
 8418                window_handle
 8419                    .update(cx, |_, window, cx| {
 8420                        workspace.update(cx, |workspace, cx| {
 8421                            let project_id = workspace.project.read(cx).remote_id();
 8422                            if update.project_id != project_id && update.project_id.is_some() {
 8423                                return;
 8424                            }
 8425                            workspace.handle_update_followers(
 8426                                leader_id,
 8427                                update.clone(),
 8428                                window,
 8429                                cx,
 8430                            );
 8431                        });
 8432                    })
 8433                    .is_ok()
 8434            });
 8435            Ok(())
 8436        })
 8437    }
 8438
 8439    pub fn workspaces(&self) -> impl Iterator<Item = &WeakEntity<Workspace>> {
 8440        self.workspaces.iter().map(|(_, weak)| weak)
 8441    }
 8442
 8443    pub fn workspaces_with_windows(
 8444        &self,
 8445    ) -> impl Iterator<Item = (gpui::AnyWindowHandle, &WeakEntity<Workspace>)> {
 8446        self.workspaces.iter().map(|(window, weak)| (*window, weak))
 8447    }
 8448}
 8449
 8450impl ViewId {
 8451    pub(crate) fn from_proto(message: proto::ViewId) -> Result<Self> {
 8452        Ok(Self {
 8453            creator: message
 8454                .creator
 8455                .map(CollaboratorId::PeerId)
 8456                .context("creator is missing")?,
 8457            id: message.id,
 8458        })
 8459    }
 8460
 8461    pub(crate) fn to_proto(self) -> Option<proto::ViewId> {
 8462        if let CollaboratorId::PeerId(peer_id) = self.creator {
 8463            Some(proto::ViewId {
 8464                creator: Some(peer_id),
 8465                id: self.id,
 8466            })
 8467        } else {
 8468            None
 8469        }
 8470    }
 8471}
 8472
 8473impl FollowerState {
 8474    fn pane(&self) -> &Entity<Pane> {
 8475        self.dock_pane.as_ref().unwrap_or(&self.center_pane)
 8476    }
 8477}
 8478
 8479pub trait WorkspaceHandle {
 8480    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath>;
 8481}
 8482
 8483impl WorkspaceHandle for Entity<Workspace> {
 8484    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath> {
 8485        self.read(cx)
 8486            .worktrees(cx)
 8487            .flat_map(|worktree| {
 8488                let worktree_id = worktree.read(cx).id();
 8489                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
 8490                    worktree_id,
 8491                    path: f.path.clone(),
 8492                })
 8493            })
 8494            .collect::<Vec<_>>()
 8495    }
 8496}
 8497
 8498pub async fn last_opened_workspace_location(
 8499    db: &WorkspaceDb,
 8500    fs: &dyn fs::Fs,
 8501) -> Option<(WorkspaceId, SerializedWorkspaceLocation, PathList)> {
 8502    db.last_workspace(fs)
 8503        .await
 8504        .log_err()
 8505        .flatten()
 8506        .map(|(id, location, paths, _timestamp)| (id, location, paths))
 8507}
 8508
 8509pub async fn last_session_workspace_locations(
 8510    db: &WorkspaceDb,
 8511    last_session_id: &str,
 8512    last_session_window_stack: Option<Vec<WindowId>>,
 8513    fs: &dyn fs::Fs,
 8514) -> Option<Vec<SessionWorkspace>> {
 8515    db.last_session_workspace_locations(last_session_id, last_session_window_stack, fs)
 8516        .await
 8517        .log_err()
 8518}
 8519
 8520pub struct MultiWorkspaceRestoreResult {
 8521    pub window_handle: WindowHandle<MultiWorkspace>,
 8522    pub errors: Vec<anyhow::Error>,
 8523}
 8524
 8525pub async fn restore_multiworkspace(
 8526    multi_workspace: SerializedMultiWorkspace,
 8527    app_state: Arc<AppState>,
 8528    cx: &mut AsyncApp,
 8529) -> anyhow::Result<MultiWorkspaceRestoreResult> {
 8530    let SerializedMultiWorkspace { workspaces, state } = multi_workspace;
 8531    let mut group_iter = workspaces.into_iter();
 8532    let first = group_iter
 8533        .next()
 8534        .context("window group must not be empty")?;
 8535
 8536    let window_handle = if first.paths.is_empty() {
 8537        cx.update(|cx| open_workspace_by_id(first.workspace_id, app_state.clone(), None, cx))
 8538            .await?
 8539    } else {
 8540        let OpenResult { window, .. } = cx
 8541            .update(|cx| {
 8542                Workspace::new_local(
 8543                    first.paths.paths().to_vec(),
 8544                    app_state.clone(),
 8545                    None,
 8546                    None,
 8547                    None,
 8548                    true,
 8549                    cx,
 8550                )
 8551            })
 8552            .await?;
 8553        window
 8554    };
 8555
 8556    let mut errors = Vec::new();
 8557
 8558    for session_workspace in group_iter {
 8559        let error = if session_workspace.paths.is_empty() {
 8560            cx.update(|cx| {
 8561                open_workspace_by_id(
 8562                    session_workspace.workspace_id,
 8563                    app_state.clone(),
 8564                    Some(window_handle),
 8565                    cx,
 8566                )
 8567            })
 8568            .await
 8569            .err()
 8570        } else {
 8571            cx.update(|cx| {
 8572                Workspace::new_local(
 8573                    session_workspace.paths.paths().to_vec(),
 8574                    app_state.clone(),
 8575                    Some(window_handle),
 8576                    None,
 8577                    None,
 8578                    false,
 8579                    cx,
 8580                )
 8581            })
 8582            .await
 8583            .err()
 8584        };
 8585
 8586        if let Some(error) = error {
 8587            errors.push(error);
 8588        }
 8589    }
 8590
 8591    if let Some(target_id) = state.active_workspace_id {
 8592        window_handle
 8593            .update(cx, |multi_workspace, window, cx| {
 8594                let target_index = multi_workspace
 8595                    .workspaces()
 8596                    .iter()
 8597                    .position(|ws| ws.read(cx).database_id() == Some(target_id));
 8598                if let Some(index) = target_index {
 8599                    multi_workspace.activate_index(index, window, cx);
 8600                } else if !multi_workspace.workspaces().is_empty() {
 8601                    multi_workspace.activate_index(0, window, cx);
 8602                }
 8603            })
 8604            .ok();
 8605    } else {
 8606        window_handle
 8607            .update(cx, |multi_workspace, window, cx| {
 8608                if !multi_workspace.workspaces().is_empty() {
 8609                    multi_workspace.activate_index(0, window, cx);
 8610                }
 8611            })
 8612            .ok();
 8613    }
 8614
 8615    if state.sidebar_open {
 8616        window_handle
 8617            .update(cx, |multi_workspace, _, cx| {
 8618                multi_workspace.open_sidebar(cx);
 8619            })
 8620            .ok();
 8621    }
 8622
 8623    window_handle
 8624        .update(cx, |_, window, _cx| {
 8625            window.activate_window();
 8626        })
 8627        .ok();
 8628
 8629    Ok(MultiWorkspaceRestoreResult {
 8630        window_handle,
 8631        errors,
 8632    })
 8633}
 8634
 8635actions!(
 8636    collab,
 8637    [
 8638        /// Opens the channel notes for the current call.
 8639        ///
 8640        /// Use `collab_panel::OpenSelectedChannelNotes` to open the channel notes for the selected
 8641        /// channel in the collab panel.
 8642        ///
 8643        /// If you want to open a specific channel, use `zed::OpenZedUrl` with a channel notes URL -
 8644        /// can be copied via "Copy link to section" in the context menu of the channel notes
 8645        /// buffer. These URLs look like `https://zed.dev/channel/channel-name-CHANNEL_ID/notes`.
 8646        OpenChannelNotes,
 8647        /// Mutes your microphone.
 8648        Mute,
 8649        /// Deafens yourself (mute both microphone and speakers).
 8650        Deafen,
 8651        /// Leaves the current call.
 8652        LeaveCall,
 8653        /// Shares the current project with collaborators.
 8654        ShareProject,
 8655        /// Shares your screen with collaborators.
 8656        ScreenShare,
 8657        /// Copies the current room name and session id for debugging purposes.
 8658        CopyRoomId,
 8659    ]
 8660);
 8661
 8662/// Opens the channel notes for a specific channel by its ID.
 8663#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
 8664#[action(namespace = collab)]
 8665#[serde(deny_unknown_fields)]
 8666pub struct OpenChannelNotesById {
 8667    pub channel_id: u64,
 8668}
 8669
 8670actions!(
 8671    zed,
 8672    [
 8673        /// Opens the Zed log file.
 8674        OpenLog,
 8675        /// Reveals the Zed log file in the system file manager.
 8676        RevealLogInFileManager
 8677    ]
 8678);
 8679
 8680async fn join_channel_internal(
 8681    channel_id: ChannelId,
 8682    app_state: &Arc<AppState>,
 8683    requesting_window: Option<WindowHandle<MultiWorkspace>>,
 8684    requesting_workspace: Option<WeakEntity<Workspace>>,
 8685    active_call: &dyn AnyActiveCall,
 8686    cx: &mut AsyncApp,
 8687) -> Result<bool> {
 8688    let (should_prompt, already_in_channel) = cx.update(|cx| {
 8689        if !active_call.is_in_room(cx) {
 8690            return (false, false);
 8691        }
 8692
 8693        let already_in_channel = active_call.channel_id(cx) == Some(channel_id);
 8694        let should_prompt = active_call.is_sharing_project(cx)
 8695            && active_call.has_remote_participants(cx)
 8696            && !already_in_channel;
 8697        (should_prompt, already_in_channel)
 8698    });
 8699
 8700    if already_in_channel {
 8701        let task = cx.update(|cx| {
 8702            if let Some((project, host)) = active_call.most_active_project(cx) {
 8703                Some(join_in_room_project(project, host, app_state.clone(), cx))
 8704            } else {
 8705                None
 8706            }
 8707        });
 8708        if let Some(task) = task {
 8709            task.await?;
 8710        }
 8711        return anyhow::Ok(true);
 8712    }
 8713
 8714    if should_prompt {
 8715        if let Some(multi_workspace) = requesting_window {
 8716            let answer = multi_workspace
 8717                .update(cx, |_, window, cx| {
 8718                    window.prompt(
 8719                        PromptLevel::Warning,
 8720                        "Do you want to switch channels?",
 8721                        Some("Leaving this call will unshare your current project."),
 8722                        &["Yes, Join Channel", "Cancel"],
 8723                        cx,
 8724                    )
 8725                })?
 8726                .await;
 8727
 8728            if answer == Ok(1) {
 8729                return Ok(false);
 8730            }
 8731        } else {
 8732            return Ok(false);
 8733        }
 8734    }
 8735
 8736    let client = cx.update(|cx| active_call.client(cx));
 8737
 8738    let mut client_status = client.status();
 8739
 8740    // this loop will terminate within client::CONNECTION_TIMEOUT seconds.
 8741    'outer: loop {
 8742        let Some(status) = client_status.recv().await else {
 8743            anyhow::bail!("error connecting");
 8744        };
 8745
 8746        match status {
 8747            Status::Connecting
 8748            | Status::Authenticating
 8749            | Status::Authenticated
 8750            | Status::Reconnecting
 8751            | Status::Reauthenticating
 8752            | Status::Reauthenticated => continue,
 8753            Status::Connected { .. } => break 'outer,
 8754            Status::SignedOut | Status::AuthenticationError => {
 8755                return Err(ErrorCode::SignedOut.into());
 8756            }
 8757            Status::UpgradeRequired => return Err(ErrorCode::UpgradeRequired.into()),
 8758            Status::ConnectionError | Status::ConnectionLost | Status::ReconnectionError { .. } => {
 8759                return Err(ErrorCode::Disconnected.into());
 8760            }
 8761        }
 8762    }
 8763
 8764    let joined = cx
 8765        .update(|cx| active_call.join_channel(channel_id, cx))
 8766        .await?;
 8767
 8768    if !joined {
 8769        return anyhow::Ok(true);
 8770    }
 8771
 8772    cx.update(|cx| active_call.room_update_completed(cx)).await;
 8773
 8774    let task = cx.update(|cx| {
 8775        if let Some((project, host)) = active_call.most_active_project(cx) {
 8776            return Some(join_in_room_project(project, host, app_state.clone(), cx));
 8777        }
 8778
 8779        // If you are the first to join a channel, see if you should share your project.
 8780        if !active_call.has_remote_participants(cx)
 8781            && !active_call.local_participant_is_guest(cx)
 8782            && let Some(workspace) = requesting_workspace.as_ref().and_then(|w| w.upgrade())
 8783        {
 8784            let project = workspace.update(cx, |workspace, cx| {
 8785                let project = workspace.project.read(cx);
 8786
 8787                if !active_call.share_on_join(cx) {
 8788                    return None;
 8789                }
 8790
 8791                if (project.is_local() || project.is_via_remote_server())
 8792                    && project.visible_worktrees(cx).any(|tree| {
 8793                        tree.read(cx)
 8794                            .root_entry()
 8795                            .is_some_and(|entry| entry.is_dir())
 8796                    })
 8797                {
 8798                    Some(workspace.project.clone())
 8799                } else {
 8800                    None
 8801                }
 8802            });
 8803            if let Some(project) = project {
 8804                let share_task = active_call.share_project(project, cx);
 8805                return Some(cx.spawn(async move |_cx| -> Result<()> {
 8806                    share_task.await?;
 8807                    Ok(())
 8808                }));
 8809            }
 8810        }
 8811
 8812        None
 8813    });
 8814    if let Some(task) = task {
 8815        task.await?;
 8816        return anyhow::Ok(true);
 8817    }
 8818    anyhow::Ok(false)
 8819}
 8820
 8821pub fn join_channel(
 8822    channel_id: ChannelId,
 8823    app_state: Arc<AppState>,
 8824    requesting_window: Option<WindowHandle<MultiWorkspace>>,
 8825    requesting_workspace: Option<WeakEntity<Workspace>>,
 8826    cx: &mut App,
 8827) -> Task<Result<()>> {
 8828    let active_call = GlobalAnyActiveCall::global(cx).clone();
 8829    cx.spawn(async move |cx| {
 8830        let result = join_channel_internal(
 8831            channel_id,
 8832            &app_state,
 8833            requesting_window,
 8834            requesting_workspace,
 8835            &*active_call.0,
 8836            cx,
 8837        )
 8838        .await;
 8839
 8840        // join channel succeeded, and opened a window
 8841        if matches!(result, Ok(true)) {
 8842            return anyhow::Ok(());
 8843        }
 8844
 8845        // find an existing workspace to focus and show call controls
 8846        let mut active_window = requesting_window.or_else(|| activate_any_workspace_window(cx));
 8847        if active_window.is_none() {
 8848            // no open workspaces, make one to show the error in (blergh)
 8849            let OpenResult {
 8850                window: window_handle,
 8851                ..
 8852            } = cx
 8853                .update(|cx| {
 8854                    Workspace::new_local(
 8855                        vec![],
 8856                        app_state.clone(),
 8857                        requesting_window,
 8858                        None,
 8859                        None,
 8860                        true,
 8861                        cx,
 8862                    )
 8863                })
 8864                .await?;
 8865
 8866            window_handle
 8867                .update(cx, |_, window, _cx| {
 8868                    window.activate_window();
 8869                })
 8870                .ok();
 8871
 8872            if result.is_ok() {
 8873                cx.update(|cx| {
 8874                    cx.dispatch_action(&OpenChannelNotes);
 8875                });
 8876            }
 8877
 8878            active_window = Some(window_handle);
 8879        }
 8880
 8881        if let Err(err) = result {
 8882            log::error!("failed to join channel: {}", err);
 8883            if let Some(active_window) = active_window {
 8884                active_window
 8885                    .update(cx, |_, window, cx| {
 8886                        let detail: SharedString = match err.error_code() {
 8887                            ErrorCode::SignedOut => "Please sign in to continue.".into(),
 8888                            ErrorCode::UpgradeRequired => concat!(
 8889                                "Your are running an unsupported version of Zed. ",
 8890                                "Please update to continue."
 8891                            )
 8892                            .into(),
 8893                            ErrorCode::NoSuchChannel => concat!(
 8894                                "No matching channel was found. ",
 8895                                "Please check the link and try again."
 8896                            )
 8897                            .into(),
 8898                            ErrorCode::Forbidden => concat!(
 8899                                "This channel is private, and you do not have access. ",
 8900                                "Please ask someone to add you and try again."
 8901                            )
 8902                            .into(),
 8903                            ErrorCode::Disconnected => {
 8904                                "Please check your internet connection and try again.".into()
 8905                            }
 8906                            _ => format!("{}\n\nPlease try again.", err).into(),
 8907                        };
 8908                        window.prompt(
 8909                            PromptLevel::Critical,
 8910                            "Failed to join channel",
 8911                            Some(&detail),
 8912                            &["Ok"],
 8913                            cx,
 8914                        )
 8915                    })?
 8916                    .await
 8917                    .ok();
 8918            }
 8919        }
 8920
 8921        // return ok, we showed the error to the user.
 8922        anyhow::Ok(())
 8923    })
 8924}
 8925
 8926pub async fn get_any_active_multi_workspace(
 8927    app_state: Arc<AppState>,
 8928    mut cx: AsyncApp,
 8929) -> anyhow::Result<WindowHandle<MultiWorkspace>> {
 8930    // find an existing workspace to focus and show call controls
 8931    let active_window = activate_any_workspace_window(&mut cx);
 8932    if active_window.is_none() {
 8933        cx.update(|cx| Workspace::new_local(vec![], app_state.clone(), None, None, None, true, cx))
 8934            .await?;
 8935    }
 8936    activate_any_workspace_window(&mut cx).context("could not open zed")
 8937}
 8938
 8939fn activate_any_workspace_window(cx: &mut AsyncApp) -> Option<WindowHandle<MultiWorkspace>> {
 8940    cx.update(|cx| {
 8941        if let Some(workspace_window) = cx
 8942            .active_window()
 8943            .and_then(|window| window.downcast::<MultiWorkspace>())
 8944        {
 8945            return Some(workspace_window);
 8946        }
 8947
 8948        for window in cx.windows() {
 8949            if let Some(workspace_window) = window.downcast::<MultiWorkspace>() {
 8950                workspace_window
 8951                    .update(cx, |_, window, _| window.activate_window())
 8952                    .ok();
 8953                return Some(workspace_window);
 8954            }
 8955        }
 8956        None
 8957    })
 8958}
 8959
 8960pub fn local_workspace_windows(cx: &App) -> Vec<WindowHandle<MultiWorkspace>> {
 8961    workspace_windows_for_location(&SerializedWorkspaceLocation::Local, cx)
 8962}
 8963
 8964pub fn workspace_windows_for_location(
 8965    serialized_location: &SerializedWorkspaceLocation,
 8966    cx: &App,
 8967) -> Vec<WindowHandle<MultiWorkspace>> {
 8968    cx.windows()
 8969        .into_iter()
 8970        .filter_map(|window| window.downcast::<MultiWorkspace>())
 8971        .filter(|multi_workspace| {
 8972            let same_host = |left: &RemoteConnectionOptions, right: &RemoteConnectionOptions| match (left, right) {
 8973                (RemoteConnectionOptions::Ssh(a), RemoteConnectionOptions::Ssh(b)) => {
 8974                    (&a.host, &a.username, &a.port) == (&b.host, &b.username, &b.port)
 8975                }
 8976                (RemoteConnectionOptions::Wsl(a), RemoteConnectionOptions::Wsl(b)) => {
 8977                    // The WSL username is not consistently populated in the workspace location, so ignore it for now.
 8978                    a.distro_name == b.distro_name
 8979                }
 8980                (RemoteConnectionOptions::Docker(a), RemoteConnectionOptions::Docker(b)) => {
 8981                    a.container_id == b.container_id
 8982                }
 8983                #[cfg(any(test, feature = "test-support"))]
 8984                (RemoteConnectionOptions::Mock(a), RemoteConnectionOptions::Mock(b)) => {
 8985                    a.id == b.id
 8986                }
 8987                _ => false,
 8988            };
 8989
 8990            multi_workspace.read(cx).is_ok_and(|multi_workspace| {
 8991                multi_workspace.workspaces().iter().any(|workspace| {
 8992                    match workspace.read(cx).workspace_location(cx) {
 8993                        WorkspaceLocation::Location(location, _) => {
 8994                            match (&location, serialized_location) {
 8995                                (
 8996                                    SerializedWorkspaceLocation::Local,
 8997                                    SerializedWorkspaceLocation::Local,
 8998                                ) => true,
 8999                                (
 9000                                    SerializedWorkspaceLocation::Remote(a),
 9001                                    SerializedWorkspaceLocation::Remote(b),
 9002                                ) => same_host(a, b),
 9003                                _ => false,
 9004                            }
 9005                        }
 9006                        _ => false,
 9007                    }
 9008                })
 9009            })
 9010        })
 9011        .collect()
 9012}
 9013
 9014pub async fn find_existing_workspace(
 9015    abs_paths: &[PathBuf],
 9016    open_options: &OpenOptions,
 9017    location: &SerializedWorkspaceLocation,
 9018    cx: &mut AsyncApp,
 9019) -> (
 9020    Option<(WindowHandle<MultiWorkspace>, Entity<Workspace>)>,
 9021    OpenVisible,
 9022) {
 9023    let mut existing: Option<(WindowHandle<MultiWorkspace>, Entity<Workspace>)> = None;
 9024    let mut open_visible = OpenVisible::All;
 9025    let mut best_match = None;
 9026
 9027    if open_options.open_new_workspace != Some(true) {
 9028        cx.update(|cx| {
 9029            for window in workspace_windows_for_location(location, cx) {
 9030                if let Ok(multi_workspace) = window.read(cx) {
 9031                    for workspace in multi_workspace.workspaces() {
 9032                        let project = workspace.read(cx).project.read(cx);
 9033                        let m = project.visibility_for_paths(
 9034                            abs_paths,
 9035                            open_options.open_new_workspace == None,
 9036                            cx,
 9037                        );
 9038                        if m > best_match {
 9039                            existing = Some((window, workspace.clone()));
 9040                            best_match = m;
 9041                        } else if best_match.is_none()
 9042                            && open_options.open_new_workspace == Some(false)
 9043                        {
 9044                            existing = Some((window, workspace.clone()))
 9045                        }
 9046                    }
 9047                }
 9048            }
 9049        });
 9050
 9051        let all_paths_are_files = existing
 9052            .as_ref()
 9053            .and_then(|(_, target_workspace)| {
 9054                cx.update(|cx| {
 9055                    let workspace = target_workspace.read(cx);
 9056                    let project = workspace.project.read(cx);
 9057                    let path_style = workspace.path_style(cx);
 9058                    Some(!abs_paths.iter().any(|path| {
 9059                        let path = util::paths::SanitizedPath::new(path);
 9060                        project.worktrees(cx).any(|worktree| {
 9061                            let worktree = worktree.read(cx);
 9062                            let abs_path = worktree.abs_path();
 9063                            path_style
 9064                                .strip_prefix(path.as_ref(), abs_path.as_ref())
 9065                                .and_then(|rel| worktree.entry_for_path(&rel))
 9066                                .is_some_and(|e| e.is_dir())
 9067                        })
 9068                    }))
 9069                })
 9070            })
 9071            .unwrap_or(false);
 9072
 9073        if open_options.open_new_workspace.is_none()
 9074            && existing.is_some()
 9075            && open_options.wait
 9076            && all_paths_are_files
 9077        {
 9078            cx.update(|cx| {
 9079                let windows = workspace_windows_for_location(location, cx);
 9080                let window = cx
 9081                    .active_window()
 9082                    .and_then(|window| window.downcast::<MultiWorkspace>())
 9083                    .filter(|window| windows.contains(window))
 9084                    .or_else(|| windows.into_iter().next());
 9085                if let Some(window) = window {
 9086                    if let Ok(multi_workspace) = window.read(cx) {
 9087                        let active_workspace = multi_workspace.workspace().clone();
 9088                        existing = Some((window, active_workspace));
 9089                        open_visible = OpenVisible::None;
 9090                    }
 9091                }
 9092            });
 9093        }
 9094    }
 9095    (existing, open_visible)
 9096}
 9097
 9098#[derive(Default, Clone)]
 9099pub struct OpenOptions {
 9100    pub visible: Option<OpenVisible>,
 9101    pub focus: Option<bool>,
 9102    pub open_new_workspace: Option<bool>,
 9103    pub wait: bool,
 9104    pub replace_window: Option<WindowHandle<MultiWorkspace>>,
 9105    pub env: Option<HashMap<String, String>>,
 9106}
 9107
 9108/// The result of opening a workspace via [`open_paths`], [`Workspace::new_local`],
 9109/// or [`Workspace::open_workspace_for_paths`].
 9110pub struct OpenResult {
 9111    pub window: WindowHandle<MultiWorkspace>,
 9112    pub workspace: Entity<Workspace>,
 9113    pub opened_items: Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 9114}
 9115
 9116/// Opens a workspace by its database ID, used for restoring empty workspaces with unsaved content.
 9117pub fn open_workspace_by_id(
 9118    workspace_id: WorkspaceId,
 9119    app_state: Arc<AppState>,
 9120    requesting_window: Option<WindowHandle<MultiWorkspace>>,
 9121    cx: &mut App,
 9122) -> Task<anyhow::Result<WindowHandle<MultiWorkspace>>> {
 9123    let project_handle = Project::local(
 9124        app_state.client.clone(),
 9125        app_state.node_runtime.clone(),
 9126        app_state.user_store.clone(),
 9127        app_state.languages.clone(),
 9128        app_state.fs.clone(),
 9129        None,
 9130        project::LocalProjectFlags {
 9131            init_worktree_trust: true,
 9132            ..project::LocalProjectFlags::default()
 9133        },
 9134        cx,
 9135    );
 9136
 9137    let db = WorkspaceDb::global(cx);
 9138    let kvp = db::kvp::KeyValueStore::global(cx);
 9139    cx.spawn(async move |cx| {
 9140        let serialized_workspace = db
 9141            .workspace_for_id(workspace_id)
 9142            .with_context(|| format!("Workspace {workspace_id:?} not found"))?;
 9143
 9144        let centered_layout = serialized_workspace.centered_layout;
 9145
 9146        let (window, workspace) = if let Some(window) = requesting_window {
 9147            let workspace = window.update(cx, |multi_workspace, window, cx| {
 9148                let workspace = cx.new(|cx| {
 9149                    let mut workspace = Workspace::new(
 9150                        Some(workspace_id),
 9151                        project_handle.clone(),
 9152                        app_state.clone(),
 9153                        window,
 9154                        cx,
 9155                    );
 9156                    workspace.centered_layout = centered_layout;
 9157                    workspace
 9158                });
 9159                multi_workspace.add_workspace(workspace.clone(), cx);
 9160                workspace
 9161            })?;
 9162            (window, workspace)
 9163        } else {
 9164            let window_bounds_override = window_bounds_env_override();
 9165
 9166            let (window_bounds, display) = if let Some(bounds) = window_bounds_override {
 9167                (Some(WindowBounds::Windowed(bounds)), None)
 9168            } else if let Some(display) = serialized_workspace.display
 9169                && let Some(bounds) = serialized_workspace.window_bounds.as_ref()
 9170            {
 9171                (Some(bounds.0), Some(display))
 9172            } else if let Some((display, bounds)) = persistence::read_default_window_bounds(&kvp) {
 9173                (Some(bounds), Some(display))
 9174            } else {
 9175                (None, None)
 9176            };
 9177
 9178            let options = cx.update(|cx| {
 9179                let mut options = (app_state.build_window_options)(display, cx);
 9180                options.window_bounds = window_bounds;
 9181                options
 9182            });
 9183
 9184            let window = cx.open_window(options, {
 9185                let app_state = app_state.clone();
 9186                let project_handle = project_handle.clone();
 9187                move |window, cx| {
 9188                    let workspace = cx.new(|cx| {
 9189                        let mut workspace = Workspace::new(
 9190                            Some(workspace_id),
 9191                            project_handle,
 9192                            app_state,
 9193                            window,
 9194                            cx,
 9195                        );
 9196                        workspace.centered_layout = centered_layout;
 9197                        workspace
 9198                    });
 9199                    cx.new(|cx| MultiWorkspace::new(workspace, window, cx))
 9200                }
 9201            })?;
 9202
 9203            let workspace = window.update(cx, |multi_workspace: &mut MultiWorkspace, _, _cx| {
 9204                multi_workspace.workspace().clone()
 9205            })?;
 9206
 9207            (window, workspace)
 9208        };
 9209
 9210        notify_if_database_failed(window, cx);
 9211
 9212        // Restore items from the serialized workspace
 9213        window
 9214            .update(cx, |_, window, cx| {
 9215                workspace.update(cx, |_workspace, cx| {
 9216                    open_items(Some(serialized_workspace), vec![], window, cx)
 9217                })
 9218            })?
 9219            .await?;
 9220
 9221        window.update(cx, |_, window, cx| {
 9222            workspace.update(cx, |workspace, cx| {
 9223                workspace.serialize_workspace(window, cx);
 9224            });
 9225        })?;
 9226
 9227        Ok(window)
 9228    })
 9229}
 9230
 9231#[allow(clippy::type_complexity)]
 9232pub fn open_paths(
 9233    abs_paths: &[PathBuf],
 9234    app_state: Arc<AppState>,
 9235    open_options: OpenOptions,
 9236    cx: &mut App,
 9237) -> Task<anyhow::Result<OpenResult>> {
 9238    let abs_paths = abs_paths.to_vec();
 9239    #[cfg(target_os = "windows")]
 9240    let wsl_path = abs_paths
 9241        .iter()
 9242        .find_map(|p| util::paths::WslPath::from_path(p));
 9243
 9244    cx.spawn(async move |cx| {
 9245        let (mut existing, mut open_visible) = find_existing_workspace(
 9246            &abs_paths,
 9247            &open_options,
 9248            &SerializedWorkspaceLocation::Local,
 9249            cx,
 9250        )
 9251        .await;
 9252
 9253        // Fallback: if no workspace contains the paths and all paths are files,
 9254        // prefer an existing local workspace window (active window first).
 9255        if open_options.open_new_workspace.is_none() && existing.is_none() {
 9256            let all_paths = abs_paths.iter().map(|path| app_state.fs.metadata(path));
 9257            let all_metadatas = futures::future::join_all(all_paths)
 9258                .await
 9259                .into_iter()
 9260                .filter_map(|result| result.ok().flatten())
 9261                .collect::<Vec<_>>();
 9262
 9263            if all_metadatas.iter().all(|file| !file.is_dir) {
 9264                cx.update(|cx| {
 9265                    let windows = workspace_windows_for_location(
 9266                        &SerializedWorkspaceLocation::Local,
 9267                        cx,
 9268                    );
 9269                    let window = cx
 9270                        .active_window()
 9271                        .and_then(|window| window.downcast::<MultiWorkspace>())
 9272                        .filter(|window| windows.contains(window))
 9273                        .or_else(|| windows.into_iter().next());
 9274                    if let Some(window) = window {
 9275                        if let Ok(multi_workspace) = window.read(cx) {
 9276                            let active_workspace = multi_workspace.workspace().clone();
 9277                            existing = Some((window, active_workspace));
 9278                            open_visible = OpenVisible::None;
 9279                        }
 9280                    }
 9281                });
 9282            }
 9283        }
 9284
 9285        let result = if let Some((existing, target_workspace)) = existing {
 9286            let open_task = existing
 9287                .update(cx, |multi_workspace, window, cx| {
 9288                    window.activate_window();
 9289                    multi_workspace.activate(target_workspace.clone(), cx);
 9290                    target_workspace.update(cx, |workspace, cx| {
 9291                        workspace.open_paths(
 9292                            abs_paths,
 9293                            OpenOptions {
 9294                                visible: Some(open_visible),
 9295                                ..Default::default()
 9296                            },
 9297                            None,
 9298                            window,
 9299                            cx,
 9300                        )
 9301                    })
 9302                })?
 9303                .await;
 9304
 9305            _ = existing.update(cx, |multi_workspace, _, cx| {
 9306                let workspace = multi_workspace.workspace().clone();
 9307                workspace.update(cx, |workspace, cx| {
 9308                    for item in open_task.iter().flatten() {
 9309                        if let Err(e) = item {
 9310                            workspace.show_error(&e, cx);
 9311                        }
 9312                    }
 9313                });
 9314            });
 9315
 9316            Ok(OpenResult { window: existing, workspace: target_workspace, opened_items: open_task })
 9317        } else {
 9318            let result = cx
 9319                .update(move |cx| {
 9320                    Workspace::new_local(
 9321                        abs_paths,
 9322                        app_state.clone(),
 9323                        open_options.replace_window,
 9324                        open_options.env,
 9325                        None,
 9326                        true,
 9327                        cx,
 9328                    )
 9329                })
 9330                .await;
 9331
 9332            if let Ok(ref result) = result {
 9333                result.window
 9334                    .update(cx, |_, window, _cx| {
 9335                        window.activate_window();
 9336                    })
 9337                    .log_err();
 9338            }
 9339
 9340            result
 9341        };
 9342
 9343        #[cfg(target_os = "windows")]
 9344        if let Some(util::paths::WslPath{distro, path}) = wsl_path
 9345            && let Ok(ref result) = result
 9346        {
 9347            result.window
 9348                .update(cx, move |multi_workspace, _window, cx| {
 9349                    struct OpenInWsl;
 9350                    let workspace = multi_workspace.workspace().clone();
 9351                    workspace.update(cx, |workspace, cx| {
 9352                        workspace.show_notification(NotificationId::unique::<OpenInWsl>(), cx, move |cx| {
 9353                            let display_path = util::markdown::MarkdownInlineCode(&path.to_string_lossy());
 9354                            let msg = format!("{display_path} is inside a WSL filesystem, some features may not work unless you open it with WSL remote");
 9355                            cx.new(move |cx| {
 9356                                MessageNotification::new(msg, cx)
 9357                                    .primary_message("Open in WSL")
 9358                                    .primary_icon(IconName::FolderOpen)
 9359                                    .primary_on_click(move |window, cx| {
 9360                                        window.dispatch_action(Box::new(remote::OpenWslPath {
 9361                                                distro: remote::WslConnectionOptions {
 9362                                                        distro_name: distro.clone(),
 9363                                                    user: None,
 9364                                                },
 9365                                                paths: vec![path.clone().into()],
 9366                                            }), cx)
 9367                                    })
 9368                            })
 9369                        });
 9370                    });
 9371                })
 9372                .unwrap();
 9373        };
 9374        result
 9375    })
 9376}
 9377
 9378pub fn open_new(
 9379    open_options: OpenOptions,
 9380    app_state: Arc<AppState>,
 9381    cx: &mut App,
 9382    init: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + 'static + Send,
 9383) -> Task<anyhow::Result<()>> {
 9384    let task = Workspace::new_local(
 9385        Vec::new(),
 9386        app_state,
 9387        open_options.replace_window,
 9388        open_options.env,
 9389        Some(Box::new(init)),
 9390        true,
 9391        cx,
 9392    );
 9393    cx.spawn(async move |cx| {
 9394        let OpenResult { window, .. } = task.await?;
 9395        window
 9396            .update(cx, |_, window, _cx| {
 9397                window.activate_window();
 9398            })
 9399            .ok();
 9400        Ok(())
 9401    })
 9402}
 9403
 9404pub fn create_and_open_local_file(
 9405    path: &'static Path,
 9406    window: &mut Window,
 9407    cx: &mut Context<Workspace>,
 9408    default_content: impl 'static + Send + FnOnce() -> Rope,
 9409) -> Task<Result<Box<dyn ItemHandle>>> {
 9410    cx.spawn_in(window, async move |workspace, cx| {
 9411        let fs = workspace.read_with(cx, |workspace, _| workspace.app_state().fs.clone())?;
 9412        if !fs.is_file(path).await {
 9413            fs.create_file(path, Default::default()).await?;
 9414            fs.save(path, &default_content(), Default::default())
 9415                .await?;
 9416        }
 9417
 9418        workspace
 9419            .update_in(cx, |workspace, window, cx| {
 9420                workspace.with_local_or_wsl_workspace(window, cx, |workspace, window, cx| {
 9421                    let path = workspace
 9422                        .project
 9423                        .read_with(cx, |project, cx| project.try_windows_path_to_wsl(path, cx));
 9424                    cx.spawn_in(window, async move |workspace, cx| {
 9425                        let path = path.await?;
 9426
 9427                        let path = fs.canonicalize(&path).await.unwrap_or(path);
 9428
 9429                        let mut items = workspace
 9430                            .update_in(cx, |workspace, window, cx| {
 9431                                workspace.open_paths(
 9432                                    vec![path.to_path_buf()],
 9433                                    OpenOptions {
 9434                                        visible: Some(OpenVisible::None),
 9435                                        ..Default::default()
 9436                                    },
 9437                                    None,
 9438                                    window,
 9439                                    cx,
 9440                                )
 9441                            })?
 9442                            .await;
 9443                        let item = items.pop().flatten();
 9444                        item.with_context(|| format!("path {path:?} is not a file"))?
 9445                    })
 9446                })
 9447            })?
 9448            .await?
 9449            .await
 9450    })
 9451}
 9452
 9453pub fn open_remote_project_with_new_connection(
 9454    window: WindowHandle<MultiWorkspace>,
 9455    remote_connection: Arc<dyn RemoteConnection>,
 9456    cancel_rx: oneshot::Receiver<()>,
 9457    delegate: Arc<dyn RemoteClientDelegate>,
 9458    app_state: Arc<AppState>,
 9459    paths: Vec<PathBuf>,
 9460    cx: &mut App,
 9461) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 9462    cx.spawn(async move |cx| {
 9463        let (workspace_id, serialized_workspace) =
 9464            deserialize_remote_project(remote_connection.connection_options(), paths.clone(), cx)
 9465                .await?;
 9466
 9467        let session = match cx
 9468            .update(|cx| {
 9469                remote::RemoteClient::new(
 9470                    ConnectionIdentifier::Workspace(workspace_id.0),
 9471                    remote_connection,
 9472                    cancel_rx,
 9473                    delegate,
 9474                    cx,
 9475                )
 9476            })
 9477            .await?
 9478        {
 9479            Some(result) => result,
 9480            None => return Ok(Vec::new()),
 9481        };
 9482
 9483        let project = cx.update(|cx| {
 9484            project::Project::remote(
 9485                session,
 9486                app_state.client.clone(),
 9487                app_state.node_runtime.clone(),
 9488                app_state.user_store.clone(),
 9489                app_state.languages.clone(),
 9490                app_state.fs.clone(),
 9491                true,
 9492                cx,
 9493            )
 9494        });
 9495
 9496        open_remote_project_inner(
 9497            project,
 9498            paths,
 9499            workspace_id,
 9500            serialized_workspace,
 9501            app_state,
 9502            window,
 9503            cx,
 9504        )
 9505        .await
 9506    })
 9507}
 9508
 9509pub fn open_remote_project_with_existing_connection(
 9510    connection_options: RemoteConnectionOptions,
 9511    project: Entity<Project>,
 9512    paths: Vec<PathBuf>,
 9513    app_state: Arc<AppState>,
 9514    window: WindowHandle<MultiWorkspace>,
 9515    cx: &mut AsyncApp,
 9516) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 9517    cx.spawn(async move |cx| {
 9518        let (workspace_id, serialized_workspace) =
 9519            deserialize_remote_project(connection_options.clone(), paths.clone(), cx).await?;
 9520
 9521        open_remote_project_inner(
 9522            project,
 9523            paths,
 9524            workspace_id,
 9525            serialized_workspace,
 9526            app_state,
 9527            window,
 9528            cx,
 9529        )
 9530        .await
 9531    })
 9532}
 9533
 9534async fn open_remote_project_inner(
 9535    project: Entity<Project>,
 9536    paths: Vec<PathBuf>,
 9537    workspace_id: WorkspaceId,
 9538    serialized_workspace: Option<SerializedWorkspace>,
 9539    app_state: Arc<AppState>,
 9540    window: WindowHandle<MultiWorkspace>,
 9541    cx: &mut AsyncApp,
 9542) -> Result<Vec<Option<Box<dyn ItemHandle>>>> {
 9543    let db = cx.update(|cx| WorkspaceDb::global(cx));
 9544    let toolchains = db.toolchains(workspace_id).await?;
 9545    for (toolchain, worktree_path, path) in toolchains {
 9546        project
 9547            .update(cx, |this, cx| {
 9548                let Some(worktree_id) =
 9549                    this.find_worktree(&worktree_path, cx)
 9550                        .and_then(|(worktree, rel_path)| {
 9551                            if rel_path.is_empty() {
 9552                                Some(worktree.read(cx).id())
 9553                            } else {
 9554                                None
 9555                            }
 9556                        })
 9557                else {
 9558                    return Task::ready(None);
 9559                };
 9560
 9561                this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 9562            })
 9563            .await;
 9564    }
 9565    let mut project_paths_to_open = vec![];
 9566    let mut project_path_errors = vec![];
 9567
 9568    for path in paths {
 9569        let result = cx
 9570            .update(|cx| Workspace::project_path_for_path(project.clone(), &path, true, cx))
 9571            .await;
 9572        match result {
 9573            Ok((_, project_path)) => {
 9574                project_paths_to_open.push((path.clone(), Some(project_path)));
 9575            }
 9576            Err(error) => {
 9577                project_path_errors.push(error);
 9578            }
 9579        };
 9580    }
 9581
 9582    if project_paths_to_open.is_empty() {
 9583        return Err(project_path_errors.pop().context("no paths given")?);
 9584    }
 9585
 9586    let workspace = window.update(cx, |multi_workspace, window, cx| {
 9587        telemetry::event!("SSH Project Opened");
 9588
 9589        let new_workspace = cx.new(|cx| {
 9590            let mut workspace =
 9591                Workspace::new(Some(workspace_id), project, app_state.clone(), window, cx);
 9592            workspace.update_history(cx);
 9593
 9594            if let Some(ref serialized) = serialized_workspace {
 9595                workspace.centered_layout = serialized.centered_layout;
 9596            }
 9597
 9598            workspace
 9599        });
 9600
 9601        multi_workspace.activate(new_workspace.clone(), cx);
 9602        new_workspace
 9603    })?;
 9604
 9605    let items = window
 9606        .update(cx, |_, window, cx| {
 9607            window.activate_window();
 9608            workspace.update(cx, |_workspace, cx| {
 9609                open_items(serialized_workspace, project_paths_to_open, window, cx)
 9610            })
 9611        })?
 9612        .await?;
 9613
 9614    workspace.update(cx, |workspace, cx| {
 9615        for error in project_path_errors {
 9616            if error.error_code() == proto::ErrorCode::DevServerProjectPathDoesNotExist {
 9617                if let Some(path) = error.error_tag("path") {
 9618                    workspace.show_error(&anyhow!("'{path}' does not exist"), cx)
 9619                }
 9620            } else {
 9621                workspace.show_error(&error, cx)
 9622            }
 9623        }
 9624    });
 9625
 9626    Ok(items.into_iter().map(|item| item?.ok()).collect())
 9627}
 9628
 9629fn deserialize_remote_project(
 9630    connection_options: RemoteConnectionOptions,
 9631    paths: Vec<PathBuf>,
 9632    cx: &AsyncApp,
 9633) -> Task<Result<(WorkspaceId, Option<SerializedWorkspace>)>> {
 9634    let db = cx.update(|cx| WorkspaceDb::global(cx));
 9635    cx.background_spawn(async move {
 9636        let remote_connection_id = db
 9637            .get_or_create_remote_connection(connection_options)
 9638            .await?;
 9639
 9640        let serialized_workspace = db.remote_workspace_for_roots(&paths, remote_connection_id);
 9641
 9642        let workspace_id = if let Some(workspace_id) =
 9643            serialized_workspace.as_ref().map(|workspace| workspace.id)
 9644        {
 9645            workspace_id
 9646        } else {
 9647            db.next_id().await?
 9648        };
 9649
 9650        Ok((workspace_id, serialized_workspace))
 9651    })
 9652}
 9653
 9654pub fn join_in_room_project(
 9655    project_id: u64,
 9656    follow_user_id: u64,
 9657    app_state: Arc<AppState>,
 9658    cx: &mut App,
 9659) -> Task<Result<()>> {
 9660    let windows = cx.windows();
 9661    cx.spawn(async move |cx| {
 9662        let existing_window_and_workspace: Option<(
 9663            WindowHandle<MultiWorkspace>,
 9664            Entity<Workspace>,
 9665        )> = windows.into_iter().find_map(|window_handle| {
 9666            window_handle
 9667                .downcast::<MultiWorkspace>()
 9668                .and_then(|window_handle| {
 9669                    window_handle
 9670                        .update(cx, |multi_workspace, _window, cx| {
 9671                            for workspace in multi_workspace.workspaces() {
 9672                                if workspace.read(cx).project().read(cx).remote_id()
 9673                                    == Some(project_id)
 9674                                {
 9675                                    return Some((window_handle, workspace.clone()));
 9676                                }
 9677                            }
 9678                            None
 9679                        })
 9680                        .unwrap_or(None)
 9681                })
 9682        });
 9683
 9684        let multi_workspace_window = if let Some((existing_window, target_workspace)) =
 9685            existing_window_and_workspace
 9686        {
 9687            existing_window
 9688                .update(cx, |multi_workspace, _, cx| {
 9689                    multi_workspace.activate(target_workspace, cx);
 9690                })
 9691                .ok();
 9692            existing_window
 9693        } else {
 9694            let active_call = cx.update(|cx| GlobalAnyActiveCall::global(cx).clone());
 9695            let project = cx
 9696                .update(|cx| {
 9697                    active_call.0.join_project(
 9698                        project_id,
 9699                        app_state.languages.clone(),
 9700                        app_state.fs.clone(),
 9701                        cx,
 9702                    )
 9703                })
 9704                .await?;
 9705
 9706            let window_bounds_override = window_bounds_env_override();
 9707            cx.update(|cx| {
 9708                let mut options = (app_state.build_window_options)(None, cx);
 9709                options.window_bounds = window_bounds_override.map(WindowBounds::Windowed);
 9710                cx.open_window(options, |window, cx| {
 9711                    let workspace = cx.new(|cx| {
 9712                        Workspace::new(Default::default(), project, app_state.clone(), window, cx)
 9713                    });
 9714                    cx.new(|cx| MultiWorkspace::new(workspace, window, cx))
 9715                })
 9716            })?
 9717        };
 9718
 9719        multi_workspace_window.update(cx, |multi_workspace, window, cx| {
 9720            cx.activate(true);
 9721            window.activate_window();
 9722
 9723            // We set the active workspace above, so this is the correct workspace.
 9724            let workspace = multi_workspace.workspace().clone();
 9725            workspace.update(cx, |workspace, cx| {
 9726                let follow_peer_id = GlobalAnyActiveCall::try_global(cx)
 9727                    .and_then(|call| call.0.peer_id_for_user_in_room(follow_user_id, cx))
 9728                    .or_else(|| {
 9729                        // If we couldn't follow the given user, follow the host instead.
 9730                        let collaborator = workspace
 9731                            .project()
 9732                            .read(cx)
 9733                            .collaborators()
 9734                            .values()
 9735                            .find(|collaborator| collaborator.is_host)?;
 9736                        Some(collaborator.peer_id)
 9737                    });
 9738
 9739                if let Some(follow_peer_id) = follow_peer_id {
 9740                    workspace.follow(follow_peer_id, window, cx);
 9741                }
 9742            });
 9743        })?;
 9744
 9745        anyhow::Ok(())
 9746    })
 9747}
 9748
 9749pub fn reload(cx: &mut App) {
 9750    let should_confirm = WorkspaceSettings::get_global(cx).confirm_quit;
 9751    let mut workspace_windows = cx
 9752        .windows()
 9753        .into_iter()
 9754        .filter_map(|window| window.downcast::<MultiWorkspace>())
 9755        .collect::<Vec<_>>();
 9756
 9757    // If multiple windows have unsaved changes, and need a save prompt,
 9758    // prompt in the active window before switching to a different window.
 9759    workspace_windows.sort_by_key(|window| window.is_active(cx) == Some(false));
 9760
 9761    let mut prompt = None;
 9762    if let (true, Some(window)) = (should_confirm, workspace_windows.first()) {
 9763        prompt = window
 9764            .update(cx, |_, window, cx| {
 9765                window.prompt(
 9766                    PromptLevel::Info,
 9767                    "Are you sure you want to restart?",
 9768                    None,
 9769                    &["Restart", "Cancel"],
 9770                    cx,
 9771                )
 9772            })
 9773            .ok();
 9774    }
 9775
 9776    cx.spawn(async move |cx| {
 9777        if let Some(prompt) = prompt {
 9778            let answer = prompt.await?;
 9779            if answer != 0 {
 9780                return anyhow::Ok(());
 9781            }
 9782        }
 9783
 9784        // If the user cancels any save prompt, then keep the app open.
 9785        for window in workspace_windows {
 9786            if let Ok(should_close) = window.update(cx, |multi_workspace, window, cx| {
 9787                let workspace = multi_workspace.workspace().clone();
 9788                workspace.update(cx, |workspace, cx| {
 9789                    workspace.prepare_to_close(CloseIntent::Quit, window, cx)
 9790                })
 9791            }) && !should_close.await?
 9792            {
 9793                return anyhow::Ok(());
 9794            }
 9795        }
 9796        cx.update(|cx| cx.restart());
 9797        anyhow::Ok(())
 9798    })
 9799    .detach_and_log_err(cx);
 9800}
 9801
 9802fn parse_pixel_position_env_var(value: &str) -> Option<Point<Pixels>> {
 9803    let mut parts = value.split(',');
 9804    let x: usize = parts.next()?.parse().ok()?;
 9805    let y: usize = parts.next()?.parse().ok()?;
 9806    Some(point(px(x as f32), px(y as f32)))
 9807}
 9808
 9809fn parse_pixel_size_env_var(value: &str) -> Option<Size<Pixels>> {
 9810    let mut parts = value.split(',');
 9811    let width: usize = parts.next()?.parse().ok()?;
 9812    let height: usize = parts.next()?.parse().ok()?;
 9813    Some(size(px(width as f32), px(height as f32)))
 9814}
 9815
 9816/// Add client-side decorations (rounded corners, shadows, resize handling) when
 9817/// appropriate.
 9818///
 9819/// The `border_radius_tiling` parameter allows overriding which corners get
 9820/// rounded, independently of the actual window tiling state. This is used
 9821/// specifically for the workspace switcher sidebar: when the sidebar is open,
 9822/// we want square corners on the left (so the sidebar appears flush with the
 9823/// window edge) but we still need the shadow padding for proper visual
 9824/// appearance. Unlike actual window tiling, this only affects border radius -
 9825/// not padding or shadows.
 9826pub fn client_side_decorations(
 9827    element: impl IntoElement,
 9828    window: &mut Window,
 9829    cx: &mut App,
 9830    border_radius_tiling: Tiling,
 9831) -> Stateful<Div> {
 9832    const BORDER_SIZE: Pixels = px(1.0);
 9833    let decorations = window.window_decorations();
 9834    let tiling = match decorations {
 9835        Decorations::Server => Tiling::default(),
 9836        Decorations::Client { tiling } => tiling,
 9837    };
 9838
 9839    match decorations {
 9840        Decorations::Client { .. } => window.set_client_inset(theme::CLIENT_SIDE_DECORATION_SHADOW),
 9841        Decorations::Server => window.set_client_inset(px(0.0)),
 9842    }
 9843
 9844    struct GlobalResizeEdge(ResizeEdge);
 9845    impl Global for GlobalResizeEdge {}
 9846
 9847    div()
 9848        .id("window-backdrop")
 9849        .bg(transparent_black())
 9850        .map(|div| match decorations {
 9851            Decorations::Server => div,
 9852            Decorations::Client { .. } => div
 9853                .when(
 9854                    !(tiling.top
 9855                        || tiling.right
 9856                        || border_radius_tiling.top
 9857                        || border_radius_tiling.right),
 9858                    |div| div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING),
 9859                )
 9860                .when(
 9861                    !(tiling.top
 9862                        || tiling.left
 9863                        || border_radius_tiling.top
 9864                        || border_radius_tiling.left),
 9865                    |div| div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING),
 9866                )
 9867                .when(
 9868                    !(tiling.bottom
 9869                        || tiling.right
 9870                        || border_radius_tiling.bottom
 9871                        || border_radius_tiling.right),
 9872                    |div| div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING),
 9873                )
 9874                .when(
 9875                    !(tiling.bottom
 9876                        || tiling.left
 9877                        || border_radius_tiling.bottom
 9878                        || border_radius_tiling.left),
 9879                    |div| div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING),
 9880                )
 9881                .when(!tiling.top, |div| {
 9882                    div.pt(theme::CLIENT_SIDE_DECORATION_SHADOW)
 9883                })
 9884                .when(!tiling.bottom, |div| {
 9885                    div.pb(theme::CLIENT_SIDE_DECORATION_SHADOW)
 9886                })
 9887                .when(!tiling.left, |div| {
 9888                    div.pl(theme::CLIENT_SIDE_DECORATION_SHADOW)
 9889                })
 9890                .when(!tiling.right, |div| {
 9891                    div.pr(theme::CLIENT_SIDE_DECORATION_SHADOW)
 9892                })
 9893                .on_mouse_move(move |e, window, cx| {
 9894                    let size = window.window_bounds().get_bounds().size;
 9895                    let pos = e.position;
 9896
 9897                    let new_edge =
 9898                        resize_edge(pos, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling);
 9899
 9900                    let edge = cx.try_global::<GlobalResizeEdge>();
 9901                    if new_edge != edge.map(|edge| edge.0) {
 9902                        window
 9903                            .window_handle()
 9904                            .update(cx, |workspace, _, cx| {
 9905                                cx.notify(workspace.entity_id());
 9906                            })
 9907                            .ok();
 9908                    }
 9909                })
 9910                .on_mouse_down(MouseButton::Left, move |e, window, _| {
 9911                    let size = window.window_bounds().get_bounds().size;
 9912                    let pos = e.position;
 9913
 9914                    let edge = match resize_edge(
 9915                        pos,
 9916                        theme::CLIENT_SIDE_DECORATION_SHADOW,
 9917                        size,
 9918                        tiling,
 9919                    ) {
 9920                        Some(value) => value,
 9921                        None => return,
 9922                    };
 9923
 9924                    window.start_window_resize(edge);
 9925                }),
 9926        })
 9927        .size_full()
 9928        .child(
 9929            div()
 9930                .cursor(CursorStyle::Arrow)
 9931                .map(|div| match decorations {
 9932                    Decorations::Server => div,
 9933                    Decorations::Client { .. } => div
 9934                        .border_color(cx.theme().colors().border)
 9935                        .when(
 9936                            !(tiling.top
 9937                                || tiling.right
 9938                                || border_radius_tiling.top
 9939                                || border_radius_tiling.right),
 9940                            |div| div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING),
 9941                        )
 9942                        .when(
 9943                            !(tiling.top
 9944                                || tiling.left
 9945                                || border_radius_tiling.top
 9946                                || border_radius_tiling.left),
 9947                            |div| div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING),
 9948                        )
 9949                        .when(
 9950                            !(tiling.bottom
 9951                                || tiling.right
 9952                                || border_radius_tiling.bottom
 9953                                || border_radius_tiling.right),
 9954                            |div| div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING),
 9955                        )
 9956                        .when(
 9957                            !(tiling.bottom
 9958                                || tiling.left
 9959                                || border_radius_tiling.bottom
 9960                                || border_radius_tiling.left),
 9961                            |div| div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING),
 9962                        )
 9963                        .when(!tiling.top, |div| div.border_t(BORDER_SIZE))
 9964                        .when(!tiling.bottom, |div| div.border_b(BORDER_SIZE))
 9965                        .when(!tiling.left, |div| div.border_l(BORDER_SIZE))
 9966                        .when(!tiling.right, |div| div.border_r(BORDER_SIZE))
 9967                        .when(!tiling.is_tiled(), |div| {
 9968                            div.shadow(vec![gpui::BoxShadow {
 9969                                color: Hsla {
 9970                                    h: 0.,
 9971                                    s: 0.,
 9972                                    l: 0.,
 9973                                    a: 0.4,
 9974                                },
 9975                                blur_radius: theme::CLIENT_SIDE_DECORATION_SHADOW / 2.,
 9976                                spread_radius: px(0.),
 9977                                offset: point(px(0.0), px(0.0)),
 9978                            }])
 9979                        }),
 9980                })
 9981                .on_mouse_move(|_e, _, cx| {
 9982                    cx.stop_propagation();
 9983                })
 9984                .size_full()
 9985                .child(element),
 9986        )
 9987        .map(|div| match decorations {
 9988            Decorations::Server => div,
 9989            Decorations::Client { tiling, .. } => div.child(
 9990                canvas(
 9991                    |_bounds, window, _| {
 9992                        window.insert_hitbox(
 9993                            Bounds::new(
 9994                                point(px(0.0), px(0.0)),
 9995                                window.window_bounds().get_bounds().size,
 9996                            ),
 9997                            HitboxBehavior::Normal,
 9998                        )
 9999                    },
10000                    move |_bounds, hitbox, window, cx| {
10001                        let mouse = window.mouse_position();
10002                        let size = window.window_bounds().get_bounds().size;
10003                        let Some(edge) =
10004                            resize_edge(mouse, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling)
10005                        else {
10006                            return;
10007                        };
10008                        cx.set_global(GlobalResizeEdge(edge));
10009                        window.set_cursor_style(
10010                            match edge {
10011                                ResizeEdge::Top | ResizeEdge::Bottom => CursorStyle::ResizeUpDown,
10012                                ResizeEdge::Left | ResizeEdge::Right => {
10013                                    CursorStyle::ResizeLeftRight
10014                                }
10015                                ResizeEdge::TopLeft | ResizeEdge::BottomRight => {
10016                                    CursorStyle::ResizeUpLeftDownRight
10017                                }
10018                                ResizeEdge::TopRight | ResizeEdge::BottomLeft => {
10019                                    CursorStyle::ResizeUpRightDownLeft
10020                                }
10021                            },
10022                            &hitbox,
10023                        );
10024                    },
10025                )
10026                .size_full()
10027                .absolute(),
10028            ),
10029        })
10030}
10031
10032fn resize_edge(
10033    pos: Point<Pixels>,
10034    shadow_size: Pixels,
10035    window_size: Size<Pixels>,
10036    tiling: Tiling,
10037) -> Option<ResizeEdge> {
10038    let bounds = Bounds::new(Point::default(), window_size).inset(shadow_size * 1.5);
10039    if bounds.contains(&pos) {
10040        return None;
10041    }
10042
10043    let corner_size = size(shadow_size * 1.5, shadow_size * 1.5);
10044    let top_left_bounds = Bounds::new(Point::new(px(0.), px(0.)), corner_size);
10045    if !tiling.top && top_left_bounds.contains(&pos) {
10046        return Some(ResizeEdge::TopLeft);
10047    }
10048
10049    let top_right_bounds = Bounds::new(
10050        Point::new(window_size.width - corner_size.width, px(0.)),
10051        corner_size,
10052    );
10053    if !tiling.top && top_right_bounds.contains(&pos) {
10054        return Some(ResizeEdge::TopRight);
10055    }
10056
10057    let bottom_left_bounds = Bounds::new(
10058        Point::new(px(0.), window_size.height - corner_size.height),
10059        corner_size,
10060    );
10061    if !tiling.bottom && bottom_left_bounds.contains(&pos) {
10062        return Some(ResizeEdge::BottomLeft);
10063    }
10064
10065    let bottom_right_bounds = Bounds::new(
10066        Point::new(
10067            window_size.width - corner_size.width,
10068            window_size.height - corner_size.height,
10069        ),
10070        corner_size,
10071    );
10072    if !tiling.bottom && bottom_right_bounds.contains(&pos) {
10073        return Some(ResizeEdge::BottomRight);
10074    }
10075
10076    if !tiling.top && pos.y < shadow_size {
10077        Some(ResizeEdge::Top)
10078    } else if !tiling.bottom && pos.y > window_size.height - shadow_size {
10079        Some(ResizeEdge::Bottom)
10080    } else if !tiling.left && pos.x < shadow_size {
10081        Some(ResizeEdge::Left)
10082    } else if !tiling.right && pos.x > window_size.width - shadow_size {
10083        Some(ResizeEdge::Right)
10084    } else {
10085        None
10086    }
10087}
10088
10089fn join_pane_into_active(
10090    active_pane: &Entity<Pane>,
10091    pane: &Entity<Pane>,
10092    window: &mut Window,
10093    cx: &mut App,
10094) {
10095    if pane == active_pane {
10096    } else if pane.read(cx).items_len() == 0 {
10097        pane.update(cx, |_, cx| {
10098            cx.emit(pane::Event::Remove {
10099                focus_on_pane: None,
10100            });
10101        })
10102    } else {
10103        move_all_items(pane, active_pane, window, cx);
10104    }
10105}
10106
10107fn move_all_items(
10108    from_pane: &Entity<Pane>,
10109    to_pane: &Entity<Pane>,
10110    window: &mut Window,
10111    cx: &mut App,
10112) {
10113    let destination_is_different = from_pane != to_pane;
10114    let mut moved_items = 0;
10115    for (item_ix, item_handle) in from_pane
10116        .read(cx)
10117        .items()
10118        .enumerate()
10119        .map(|(ix, item)| (ix, item.clone()))
10120        .collect::<Vec<_>>()
10121    {
10122        let ix = item_ix - moved_items;
10123        if destination_is_different {
10124            // Close item from previous pane
10125            from_pane.update(cx, |source, cx| {
10126                source.remove_item_and_focus_on_pane(ix, false, to_pane.clone(), window, cx);
10127            });
10128            moved_items += 1;
10129        }
10130
10131        // This automatically removes duplicate items in the pane
10132        to_pane.update(cx, |destination, cx| {
10133            destination.add_item(item_handle, true, true, None, window, cx);
10134            window.focus(&destination.focus_handle(cx), cx)
10135        });
10136    }
10137}
10138
10139pub fn move_item(
10140    source: &Entity<Pane>,
10141    destination: &Entity<Pane>,
10142    item_id_to_move: EntityId,
10143    destination_index: usize,
10144    activate: bool,
10145    window: &mut Window,
10146    cx: &mut App,
10147) {
10148    let Some((item_ix, item_handle)) = source
10149        .read(cx)
10150        .items()
10151        .enumerate()
10152        .find(|(_, item_handle)| item_handle.item_id() == item_id_to_move)
10153        .map(|(ix, item)| (ix, item.clone()))
10154    else {
10155        // Tab was closed during drag
10156        return;
10157    };
10158
10159    if source != destination {
10160        // Close item from previous pane
10161        source.update(cx, |source, cx| {
10162            source.remove_item_and_focus_on_pane(item_ix, false, destination.clone(), window, cx);
10163        });
10164    }
10165
10166    // This automatically removes duplicate items in the pane
10167    destination.update(cx, |destination, cx| {
10168        destination.add_item_inner(
10169            item_handle,
10170            activate,
10171            activate,
10172            activate,
10173            Some(destination_index),
10174            window,
10175            cx,
10176        );
10177        if activate {
10178            window.focus(&destination.focus_handle(cx), cx)
10179        }
10180    });
10181}
10182
10183pub fn move_active_item(
10184    source: &Entity<Pane>,
10185    destination: &Entity<Pane>,
10186    focus_destination: bool,
10187    close_if_empty: bool,
10188    window: &mut Window,
10189    cx: &mut App,
10190) {
10191    if source == destination {
10192        return;
10193    }
10194    let Some(active_item) = source.read(cx).active_item() else {
10195        return;
10196    };
10197    source.update(cx, |source_pane, cx| {
10198        let item_id = active_item.item_id();
10199        source_pane.remove_item(item_id, false, close_if_empty, window, cx);
10200        destination.update(cx, |target_pane, cx| {
10201            target_pane.add_item(
10202                active_item,
10203                focus_destination,
10204                focus_destination,
10205                Some(target_pane.items_len()),
10206                window,
10207                cx,
10208            );
10209        });
10210    });
10211}
10212
10213pub fn clone_active_item(
10214    workspace_id: Option<WorkspaceId>,
10215    source: &Entity<Pane>,
10216    destination: &Entity<Pane>,
10217    focus_destination: bool,
10218    window: &mut Window,
10219    cx: &mut App,
10220) {
10221    if source == destination {
10222        return;
10223    }
10224    let Some(active_item) = source.read(cx).active_item() else {
10225        return;
10226    };
10227    if !active_item.can_split(cx) {
10228        return;
10229    }
10230    let destination = destination.downgrade();
10231    let task = active_item.clone_on_split(workspace_id, window, cx);
10232    window
10233        .spawn(cx, async move |cx| {
10234            let Some(clone) = task.await else {
10235                return;
10236            };
10237            destination
10238                .update_in(cx, |target_pane, window, cx| {
10239                    target_pane.add_item(
10240                        clone,
10241                        focus_destination,
10242                        focus_destination,
10243                        Some(target_pane.items_len()),
10244                        window,
10245                        cx,
10246                    );
10247                })
10248                .log_err();
10249        })
10250        .detach();
10251}
10252
10253#[derive(Debug)]
10254pub struct WorkspacePosition {
10255    pub window_bounds: Option<WindowBounds>,
10256    pub display: Option<Uuid>,
10257    pub centered_layout: bool,
10258}
10259
10260pub fn remote_workspace_position_from_db(
10261    connection_options: RemoteConnectionOptions,
10262    paths_to_open: &[PathBuf],
10263    cx: &App,
10264) -> Task<Result<WorkspacePosition>> {
10265    let paths = paths_to_open.to_vec();
10266    let db = WorkspaceDb::global(cx);
10267    let kvp = db::kvp::KeyValueStore::global(cx);
10268
10269    cx.background_spawn(async move {
10270        let remote_connection_id = db
10271            .get_or_create_remote_connection(connection_options)
10272            .await
10273            .context("fetching serialized ssh project")?;
10274        let serialized_workspace = db.remote_workspace_for_roots(&paths, remote_connection_id);
10275
10276        let (window_bounds, display) = if let Some(bounds) = window_bounds_env_override() {
10277            (Some(WindowBounds::Windowed(bounds)), None)
10278        } else {
10279            let restorable_bounds = serialized_workspace
10280                .as_ref()
10281                .and_then(|workspace| {
10282                    Some((workspace.display?, workspace.window_bounds.map(|b| b.0)?))
10283                })
10284                .or_else(|| persistence::read_default_window_bounds(&kvp));
10285
10286            if let Some((serialized_display, serialized_bounds)) = restorable_bounds {
10287                (Some(serialized_bounds), Some(serialized_display))
10288            } else {
10289                (None, None)
10290            }
10291        };
10292
10293        let centered_layout = serialized_workspace
10294            .as_ref()
10295            .map(|w| w.centered_layout)
10296            .unwrap_or(false);
10297
10298        Ok(WorkspacePosition {
10299            window_bounds,
10300            display,
10301            centered_layout,
10302        })
10303    })
10304}
10305
10306pub fn with_active_or_new_workspace(
10307    cx: &mut App,
10308    f: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send + 'static,
10309) {
10310    match cx
10311        .active_window()
10312        .and_then(|w| w.downcast::<MultiWorkspace>())
10313    {
10314        Some(multi_workspace) => {
10315            cx.defer(move |cx| {
10316                multi_workspace
10317                    .update(cx, |multi_workspace, window, cx| {
10318                        let workspace = multi_workspace.workspace().clone();
10319                        workspace.update(cx, |workspace, cx| f(workspace, window, cx));
10320                    })
10321                    .log_err();
10322            });
10323        }
10324        None => {
10325            let app_state = AppState::global(cx);
10326            if let Some(app_state) = app_state.upgrade() {
10327                open_new(
10328                    OpenOptions::default(),
10329                    app_state,
10330                    cx,
10331                    move |workspace, window, cx| f(workspace, window, cx),
10332                )
10333                .detach_and_log_err(cx);
10334            }
10335        }
10336    }
10337}
10338
10339/// Reads a panel's pixel size from its legacy KVP format and deletes the legacy
10340/// key. This migration path only runs once per panel per workspace.
10341fn load_legacy_panel_size(
10342    panel_key: &str,
10343    dock_position: DockPosition,
10344    workspace: &Workspace,
10345    cx: &mut App,
10346) -> Option<Pixels> {
10347    #[derive(Deserialize)]
10348    struct LegacyPanelState {
10349        #[serde(default)]
10350        width: Option<Pixels>,
10351        #[serde(default)]
10352        height: Option<Pixels>,
10353    }
10354
10355    let workspace_id = workspace
10356        .database_id()
10357        .map(|id| i64::from(id).to_string())
10358        .or_else(|| workspace.session_id())?;
10359
10360    let legacy_key = match panel_key {
10361        "ProjectPanel" => {
10362            format!("{}-{:?}", "ProjectPanel", workspace_id)
10363        }
10364        "OutlinePanel" => {
10365            format!("{}-{:?}", "OutlinePanel", workspace_id)
10366        }
10367        "GitPanel" => {
10368            format!("{}-{:?}", "GitPanel", workspace_id)
10369        }
10370        "TerminalPanel" => {
10371            format!("{:?}-{:?}", "TerminalPanel", workspace_id)
10372        }
10373        _ => return None,
10374    };
10375
10376    let kvp = db::kvp::KeyValueStore::global(cx);
10377    let json = kvp.read_kvp(&legacy_key).log_err().flatten()?;
10378    let state = serde_json::from_str::<LegacyPanelState>(&json).log_err()?;
10379    let size = match dock_position {
10380        DockPosition::Bottom => state.height,
10381        DockPosition::Left | DockPosition::Right => state.width,
10382    }?;
10383
10384    cx.background_spawn(async move { kvp.delete_kvp(legacy_key).await })
10385        .detach_and_log_err(cx);
10386
10387    Some(size)
10388}
10389
10390#[cfg(test)]
10391mod tests {
10392    use std::{cell::RefCell, rc::Rc, sync::Arc, time::Duration};
10393
10394    use super::*;
10395    use crate::{
10396        dock::{PanelEvent, test::TestPanel},
10397        item::{
10398            ItemBufferKind, ItemEvent,
10399            test::{TestItem, TestProjectItem},
10400        },
10401    };
10402    use fs::FakeFs;
10403    use gpui::{
10404        DismissEvent, Empty, EventEmitter, FocusHandle, Focusable, Render, TestAppContext,
10405        UpdateGlobal, VisualTestContext, px,
10406    };
10407    use project::{Project, ProjectEntryId};
10408    use serde_json::json;
10409    use settings::SettingsStore;
10410    use util::path;
10411    use util::rel_path::rel_path;
10412
10413    #[gpui::test]
10414    async fn test_tab_disambiguation(cx: &mut TestAppContext) {
10415        init_test(cx);
10416
10417        let fs = FakeFs::new(cx.executor());
10418        let project = Project::test(fs, [], cx).await;
10419        let (workspace, cx) =
10420            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10421
10422        // Adding an item with no ambiguity renders the tab without detail.
10423        let item1 = cx.new(|cx| {
10424            let mut item = TestItem::new(cx);
10425            item.tab_descriptions = Some(vec!["c", "b1/c", "a/b1/c"]);
10426            item
10427        });
10428        workspace.update_in(cx, |workspace, window, cx| {
10429            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
10430        });
10431        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(0)));
10432
10433        // Adding an item that creates ambiguity increases the level of detail on
10434        // both tabs.
10435        let item2 = cx.new_window_entity(|_window, cx| {
10436            let mut item = TestItem::new(cx);
10437            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
10438            item
10439        });
10440        workspace.update_in(cx, |workspace, window, cx| {
10441            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
10442        });
10443        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
10444        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
10445
10446        // Adding an item that creates ambiguity increases the level of detail only
10447        // on the ambiguous tabs. In this case, the ambiguity can't be resolved so
10448        // we stop at the highest detail available.
10449        let item3 = cx.new(|cx| {
10450            let mut item = TestItem::new(cx);
10451            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
10452            item
10453        });
10454        workspace.update_in(cx, |workspace, window, cx| {
10455            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
10456        });
10457        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
10458        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
10459        item3.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
10460    }
10461
10462    #[gpui::test]
10463    async fn test_tracking_active_path(cx: &mut TestAppContext) {
10464        init_test(cx);
10465
10466        let fs = FakeFs::new(cx.executor());
10467        fs.insert_tree(
10468            "/root1",
10469            json!({
10470                "one.txt": "",
10471                "two.txt": "",
10472            }),
10473        )
10474        .await;
10475        fs.insert_tree(
10476            "/root2",
10477            json!({
10478                "three.txt": "",
10479            }),
10480        )
10481        .await;
10482
10483        let project = Project::test(fs, ["root1".as_ref()], cx).await;
10484        let (workspace, cx) =
10485            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10486        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10487        let worktree_id = project.update(cx, |project, cx| {
10488            project.worktrees(cx).next().unwrap().read(cx).id()
10489        });
10490
10491        let item1 = cx.new(|cx| {
10492            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
10493        });
10494        let item2 = cx.new(|cx| {
10495            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "two.txt", cx)])
10496        });
10497
10498        // Add an item to an empty pane
10499        workspace.update_in(cx, |workspace, window, cx| {
10500            workspace.add_item_to_active_pane(Box::new(item1), None, true, window, cx)
10501        });
10502        project.update(cx, |project, cx| {
10503            assert_eq!(
10504                project.active_entry(),
10505                project
10506                    .entry_for_path(&(worktree_id, rel_path("one.txt")).into(), cx)
10507                    .map(|e| e.id)
10508            );
10509        });
10510        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
10511
10512        // Add a second item to a non-empty pane
10513        workspace.update_in(cx, |workspace, window, cx| {
10514            workspace.add_item_to_active_pane(Box::new(item2), None, true, window, cx)
10515        });
10516        assert_eq!(cx.window_title().as_deref(), Some("root1 — two.txt"));
10517        project.update(cx, |project, cx| {
10518            assert_eq!(
10519                project.active_entry(),
10520                project
10521                    .entry_for_path(&(worktree_id, rel_path("two.txt")).into(), cx)
10522                    .map(|e| e.id)
10523            );
10524        });
10525
10526        // Close the active item
10527        pane.update_in(cx, |pane, window, cx| {
10528            pane.close_active_item(&Default::default(), window, cx)
10529        })
10530        .await
10531        .unwrap();
10532        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
10533        project.update(cx, |project, cx| {
10534            assert_eq!(
10535                project.active_entry(),
10536                project
10537                    .entry_for_path(&(worktree_id, rel_path("one.txt")).into(), cx)
10538                    .map(|e| e.id)
10539            );
10540        });
10541
10542        // Add a project folder
10543        project
10544            .update(cx, |project, cx| {
10545                project.find_or_create_worktree("root2", true, cx)
10546            })
10547            .await
10548            .unwrap();
10549        assert_eq!(cx.window_title().as_deref(), Some("root1, root2 — one.txt"));
10550
10551        // Remove a project folder
10552        project.update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
10553        assert_eq!(cx.window_title().as_deref(), Some("root2 — one.txt"));
10554    }
10555
10556    #[gpui::test]
10557    async fn test_close_window(cx: &mut TestAppContext) {
10558        init_test(cx);
10559
10560        let fs = FakeFs::new(cx.executor());
10561        fs.insert_tree("/root", json!({ "one": "" })).await;
10562
10563        let project = Project::test(fs, ["root".as_ref()], cx).await;
10564        let (workspace, cx) =
10565            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10566
10567        // When there are no dirty items, there's nothing to do.
10568        let item1 = cx.new(TestItem::new);
10569        workspace.update_in(cx, |w, window, cx| {
10570            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx)
10571        });
10572        let task = workspace.update_in(cx, |w, window, cx| {
10573            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
10574        });
10575        assert!(task.await.unwrap());
10576
10577        // When there are dirty untitled items, prompt to save each one. If the user
10578        // cancels any prompt, then abort.
10579        let item2 = cx.new(|cx| TestItem::new(cx).with_dirty(true));
10580        let item3 = cx.new(|cx| {
10581            TestItem::new(cx)
10582                .with_dirty(true)
10583                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
10584        });
10585        workspace.update_in(cx, |w, window, cx| {
10586            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
10587            w.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
10588        });
10589        let task = workspace.update_in(cx, |w, window, cx| {
10590            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
10591        });
10592        cx.executor().run_until_parked();
10593        cx.simulate_prompt_answer("Cancel"); // cancel save all
10594        cx.executor().run_until_parked();
10595        assert!(!cx.has_pending_prompt());
10596        assert!(!task.await.unwrap());
10597    }
10598
10599    #[gpui::test]
10600    async fn test_multi_workspace_close_window_multiple_workspaces_cancel(cx: &mut TestAppContext) {
10601        init_test(cx);
10602
10603        let fs = FakeFs::new(cx.executor());
10604        fs.insert_tree("/root", json!({ "one": "" })).await;
10605
10606        let project_a = Project::test(fs.clone(), ["root".as_ref()], cx).await;
10607        let project_b = Project::test(fs, ["root".as_ref()], cx).await;
10608        let multi_workspace_handle =
10609            cx.add_window(|window, cx| MultiWorkspace::test_new(project_a.clone(), window, cx));
10610        cx.run_until_parked();
10611
10612        let workspace_a = multi_workspace_handle
10613            .read_with(cx, |mw, _| mw.workspace().clone())
10614            .unwrap();
10615
10616        let workspace_b = multi_workspace_handle
10617            .update(cx, |mw, window, cx| {
10618                mw.test_add_workspace(project_b, window, cx)
10619            })
10620            .unwrap();
10621
10622        // Activate workspace A
10623        multi_workspace_handle
10624            .update(cx, |mw, window, cx| {
10625                mw.activate_index(0, window, cx);
10626            })
10627            .unwrap();
10628
10629        let cx = &mut VisualTestContext::from_window(multi_workspace_handle.into(), cx);
10630
10631        // Workspace A has a clean item
10632        let item_a = cx.new(TestItem::new);
10633        workspace_a.update_in(cx, |w, window, cx| {
10634            w.add_item_to_active_pane(Box::new(item_a.clone()), None, true, window, cx)
10635        });
10636
10637        // Workspace B has a dirty item
10638        let item_b = cx.new(|cx| TestItem::new(cx).with_dirty(true));
10639        workspace_b.update_in(cx, |w, window, cx| {
10640            w.add_item_to_active_pane(Box::new(item_b.clone()), None, true, window, cx)
10641        });
10642
10643        // Verify workspace A is active
10644        multi_workspace_handle
10645            .read_with(cx, |mw, _| {
10646                assert_eq!(mw.active_workspace_index(), 0);
10647            })
10648            .unwrap();
10649
10650        // Dispatch CloseWindow — workspace A will pass, workspace B will prompt
10651        multi_workspace_handle
10652            .update(cx, |mw, window, cx| {
10653                mw.close_window(&CloseWindow, window, cx);
10654            })
10655            .unwrap();
10656        cx.run_until_parked();
10657
10658        // Workspace B should now be active since it has dirty items that need attention
10659        multi_workspace_handle
10660            .read_with(cx, |mw, _| {
10661                assert_eq!(
10662                    mw.active_workspace_index(),
10663                    1,
10664                    "workspace B should be activated when it prompts"
10665                );
10666            })
10667            .unwrap();
10668
10669        // User cancels the save prompt from workspace B
10670        cx.simulate_prompt_answer("Cancel");
10671        cx.run_until_parked();
10672
10673        // Window should still exist because workspace B's close was cancelled
10674        assert!(
10675            multi_workspace_handle.update(cx, |_, _, _| ()).is_ok(),
10676            "window should still exist after cancelling one workspace's close"
10677        );
10678    }
10679
10680    #[gpui::test]
10681    async fn test_close_window_with_serializable_items(cx: &mut TestAppContext) {
10682        init_test(cx);
10683
10684        // Register TestItem as a serializable item
10685        cx.update(|cx| {
10686            register_serializable_item::<TestItem>(cx);
10687        });
10688
10689        let fs = FakeFs::new(cx.executor());
10690        fs.insert_tree("/root", json!({ "one": "" })).await;
10691
10692        let project = Project::test(fs, ["root".as_ref()], cx).await;
10693        let (workspace, cx) =
10694            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10695
10696        // When there are dirty untitled items, but they can serialize, then there is no prompt.
10697        let item1 = cx.new(|cx| {
10698            TestItem::new(cx)
10699                .with_dirty(true)
10700                .with_serialize(|| Some(Task::ready(Ok(()))))
10701        });
10702        let item2 = cx.new(|cx| {
10703            TestItem::new(cx)
10704                .with_dirty(true)
10705                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
10706                .with_serialize(|| Some(Task::ready(Ok(()))))
10707        });
10708        workspace.update_in(cx, |w, window, cx| {
10709            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
10710            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
10711        });
10712        let task = workspace.update_in(cx, |w, window, cx| {
10713            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
10714        });
10715        assert!(task.await.unwrap());
10716    }
10717
10718    #[gpui::test]
10719    async fn test_close_pane_items(cx: &mut TestAppContext) {
10720        init_test(cx);
10721
10722        let fs = FakeFs::new(cx.executor());
10723
10724        let project = Project::test(fs, None, cx).await;
10725        let (workspace, cx) =
10726            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10727
10728        let item1 = cx.new(|cx| {
10729            TestItem::new(cx)
10730                .with_dirty(true)
10731                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10732        });
10733        let item2 = cx.new(|cx| {
10734            TestItem::new(cx)
10735                .with_dirty(true)
10736                .with_conflict(true)
10737                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10738        });
10739        let item3 = cx.new(|cx| {
10740            TestItem::new(cx)
10741                .with_dirty(true)
10742                .with_conflict(true)
10743                .with_project_items(&[dirty_project_item(3, "3.txt", cx)])
10744        });
10745        let item4 = cx.new(|cx| {
10746            TestItem::new(cx).with_dirty(true).with_project_items(&[{
10747                let project_item = TestProjectItem::new_untitled(cx);
10748                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
10749                project_item
10750            }])
10751        });
10752        let pane = workspace.update_in(cx, |workspace, window, cx| {
10753            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
10754            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
10755            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
10756            workspace.add_item_to_active_pane(Box::new(item4.clone()), None, true, window, cx);
10757            workspace.active_pane().clone()
10758        });
10759
10760        let close_items = pane.update_in(cx, |pane, window, cx| {
10761            pane.activate_item(1, true, true, window, cx);
10762            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
10763            let item1_id = item1.item_id();
10764            let item3_id = item3.item_id();
10765            let item4_id = item4.item_id();
10766            pane.close_items(window, cx, SaveIntent::Close, &move |id| {
10767                [item1_id, item3_id, item4_id].contains(&id)
10768            })
10769        });
10770        cx.executor().run_until_parked();
10771
10772        assert!(cx.has_pending_prompt());
10773        cx.simulate_prompt_answer("Save all");
10774
10775        cx.executor().run_until_parked();
10776
10777        // Item 1 is saved. There's a prompt to save item 3.
10778        pane.update(cx, |pane, cx| {
10779            assert_eq!(item1.read(cx).save_count, 1);
10780            assert_eq!(item1.read(cx).save_as_count, 0);
10781            assert_eq!(item1.read(cx).reload_count, 0);
10782            assert_eq!(pane.items_len(), 3);
10783            assert_eq!(pane.active_item().unwrap().item_id(), item3.item_id());
10784        });
10785        assert!(cx.has_pending_prompt());
10786
10787        // Cancel saving item 3.
10788        cx.simulate_prompt_answer("Discard");
10789        cx.executor().run_until_parked();
10790
10791        // Item 3 is reloaded. There's a prompt to save item 4.
10792        pane.update(cx, |pane, cx| {
10793            assert_eq!(item3.read(cx).save_count, 0);
10794            assert_eq!(item3.read(cx).save_as_count, 0);
10795            assert_eq!(item3.read(cx).reload_count, 1);
10796            assert_eq!(pane.items_len(), 2);
10797            assert_eq!(pane.active_item().unwrap().item_id(), item4.item_id());
10798        });
10799
10800        // There's a prompt for a path for item 4.
10801        cx.simulate_new_path_selection(|_| Some(Default::default()));
10802        close_items.await.unwrap();
10803
10804        // The requested items are closed.
10805        pane.update(cx, |pane, cx| {
10806            assert_eq!(item4.read(cx).save_count, 0);
10807            assert_eq!(item4.read(cx).save_as_count, 1);
10808            assert_eq!(item4.read(cx).reload_count, 0);
10809            assert_eq!(pane.items_len(), 1);
10810            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
10811        });
10812    }
10813
10814    #[gpui::test]
10815    async fn test_prompting_to_save_only_on_last_item_for_entry(cx: &mut TestAppContext) {
10816        init_test(cx);
10817
10818        let fs = FakeFs::new(cx.executor());
10819        let project = Project::test(fs, [], cx).await;
10820        let (workspace, cx) =
10821            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10822
10823        // Create several workspace items with single project entries, and two
10824        // workspace items with multiple project entries.
10825        let single_entry_items = (0..=4)
10826            .map(|project_entry_id| {
10827                cx.new(|cx| {
10828                    TestItem::new(cx)
10829                        .with_dirty(true)
10830                        .with_project_items(&[dirty_project_item(
10831                            project_entry_id,
10832                            &format!("{project_entry_id}.txt"),
10833                            cx,
10834                        )])
10835                })
10836            })
10837            .collect::<Vec<_>>();
10838        let item_2_3 = cx.new(|cx| {
10839            TestItem::new(cx)
10840                .with_dirty(true)
10841                .with_buffer_kind(ItemBufferKind::Multibuffer)
10842                .with_project_items(&[
10843                    single_entry_items[2].read(cx).project_items[0].clone(),
10844                    single_entry_items[3].read(cx).project_items[0].clone(),
10845                ])
10846        });
10847        let item_3_4 = cx.new(|cx| {
10848            TestItem::new(cx)
10849                .with_dirty(true)
10850                .with_buffer_kind(ItemBufferKind::Multibuffer)
10851                .with_project_items(&[
10852                    single_entry_items[3].read(cx).project_items[0].clone(),
10853                    single_entry_items[4].read(cx).project_items[0].clone(),
10854                ])
10855        });
10856
10857        // Create two panes that contain the following project entries:
10858        //   left pane:
10859        //     multi-entry items:   (2, 3)
10860        //     single-entry items:  0, 2, 3, 4
10861        //   right pane:
10862        //     single-entry items:  4, 1
10863        //     multi-entry items:   (3, 4)
10864        let (left_pane, right_pane) = workspace.update_in(cx, |workspace, window, cx| {
10865            let left_pane = workspace.active_pane().clone();
10866            workspace.add_item_to_active_pane(Box::new(item_2_3.clone()), None, true, window, cx);
10867            workspace.add_item_to_active_pane(
10868                single_entry_items[0].boxed_clone(),
10869                None,
10870                true,
10871                window,
10872                cx,
10873            );
10874            workspace.add_item_to_active_pane(
10875                single_entry_items[2].boxed_clone(),
10876                None,
10877                true,
10878                window,
10879                cx,
10880            );
10881            workspace.add_item_to_active_pane(
10882                single_entry_items[3].boxed_clone(),
10883                None,
10884                true,
10885                window,
10886                cx,
10887            );
10888            workspace.add_item_to_active_pane(
10889                single_entry_items[4].boxed_clone(),
10890                None,
10891                true,
10892                window,
10893                cx,
10894            );
10895
10896            let right_pane =
10897                workspace.split_and_clone(left_pane.clone(), SplitDirection::Right, window, cx);
10898
10899            let boxed_clone = single_entry_items[1].boxed_clone();
10900            let right_pane = window.spawn(cx, async move |cx| {
10901                right_pane.await.inspect(|right_pane| {
10902                    right_pane
10903                        .update_in(cx, |pane, window, cx| {
10904                            pane.add_item(boxed_clone, true, true, None, window, cx);
10905                            pane.add_item(Box::new(item_3_4.clone()), true, true, None, window, cx);
10906                        })
10907                        .unwrap();
10908                })
10909            });
10910
10911            (left_pane, right_pane)
10912        });
10913        let right_pane = right_pane.await.unwrap();
10914        cx.focus(&right_pane);
10915
10916        let close = right_pane.update_in(cx, |pane, window, cx| {
10917            pane.close_all_items(&CloseAllItems::default(), window, cx)
10918                .unwrap()
10919        });
10920        cx.executor().run_until_parked();
10921
10922        let msg = cx.pending_prompt().unwrap().0;
10923        assert!(msg.contains("1.txt"));
10924        assert!(!msg.contains("2.txt"));
10925        assert!(!msg.contains("3.txt"));
10926        assert!(!msg.contains("4.txt"));
10927
10928        // With best-effort close, cancelling item 1 keeps it open but items 4
10929        // and (3,4) still close since their entries exist in left pane.
10930        cx.simulate_prompt_answer("Cancel");
10931        close.await;
10932
10933        right_pane.read_with(cx, |pane, _| {
10934            assert_eq!(pane.items_len(), 1);
10935        });
10936
10937        // Remove item 3 from left pane, making (2,3) the only item with entry 3.
10938        left_pane
10939            .update_in(cx, |left_pane, window, cx| {
10940                left_pane.close_item_by_id(
10941                    single_entry_items[3].entity_id(),
10942                    SaveIntent::Skip,
10943                    window,
10944                    cx,
10945                )
10946            })
10947            .await
10948            .unwrap();
10949
10950        let close = left_pane.update_in(cx, |pane, window, cx| {
10951            pane.close_all_items(&CloseAllItems::default(), window, cx)
10952                .unwrap()
10953        });
10954        cx.executor().run_until_parked();
10955
10956        let details = cx.pending_prompt().unwrap().1;
10957        assert!(details.contains("0.txt"));
10958        assert!(details.contains("3.txt"));
10959        assert!(details.contains("4.txt"));
10960        // Ideally 2.txt wouldn't appear since entry 2 still exists in item 2.
10961        // But we can only save whole items, so saving (2,3) for entry 3 includes 2.
10962        // assert!(!details.contains("2.txt"));
10963
10964        cx.simulate_prompt_answer("Save all");
10965        cx.executor().run_until_parked();
10966        close.await;
10967
10968        left_pane.read_with(cx, |pane, _| {
10969            assert_eq!(pane.items_len(), 0);
10970        });
10971    }
10972
10973    #[gpui::test]
10974    async fn test_autosave(cx: &mut gpui::TestAppContext) {
10975        init_test(cx);
10976
10977        let fs = FakeFs::new(cx.executor());
10978        let project = Project::test(fs, [], cx).await;
10979        let (workspace, cx) =
10980            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10981        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10982
10983        let item = cx.new(|cx| {
10984            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
10985        });
10986        let item_id = item.entity_id();
10987        workspace.update_in(cx, |workspace, window, cx| {
10988            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
10989        });
10990
10991        // Autosave on window change.
10992        item.update(cx, |item, cx| {
10993            SettingsStore::update_global(cx, |settings, cx| {
10994                settings.update_user_settings(cx, |settings| {
10995                    settings.workspace.autosave = Some(AutosaveSetting::OnWindowChange);
10996                })
10997            });
10998            item.is_dirty = true;
10999        });
11000
11001        // Deactivating the window saves the file.
11002        cx.deactivate_window();
11003        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
11004
11005        // Re-activating the window doesn't save the file.
11006        cx.update(|window, _| window.activate_window());
11007        cx.executor().run_until_parked();
11008        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
11009
11010        // Autosave on focus change.
11011        item.update_in(cx, |item, window, cx| {
11012            cx.focus_self(window);
11013            SettingsStore::update_global(cx, |settings, cx| {
11014                settings.update_user_settings(cx, |settings| {
11015                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
11016                })
11017            });
11018            item.is_dirty = true;
11019        });
11020        // Blurring the item saves the file.
11021        item.update_in(cx, |_, window, _| window.blur());
11022        cx.executor().run_until_parked();
11023        item.read_with(cx, |item, _| assert_eq!(item.save_count, 2));
11024
11025        // Deactivating the window still saves the file.
11026        item.update_in(cx, |item, window, cx| {
11027            cx.focus_self(window);
11028            item.is_dirty = true;
11029        });
11030        cx.deactivate_window();
11031        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
11032
11033        // Autosave after delay.
11034        item.update(cx, |item, cx| {
11035            SettingsStore::update_global(cx, |settings, cx| {
11036                settings.update_user_settings(cx, |settings| {
11037                    settings.workspace.autosave = Some(AutosaveSetting::AfterDelay {
11038                        milliseconds: 500.into(),
11039                    });
11040                })
11041            });
11042            item.is_dirty = true;
11043            cx.emit(ItemEvent::Edit);
11044        });
11045
11046        // Delay hasn't fully expired, so the file is still dirty and unsaved.
11047        cx.executor().advance_clock(Duration::from_millis(250));
11048        item.read_with(cx, |item, _| assert_eq!(item.save_count, 3));
11049
11050        // After delay expires, the file is saved.
11051        cx.executor().advance_clock(Duration::from_millis(250));
11052        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
11053
11054        // Autosave after delay, should save earlier than delay if tab is closed
11055        item.update(cx, |item, cx| {
11056            item.is_dirty = true;
11057            cx.emit(ItemEvent::Edit);
11058        });
11059        cx.executor().advance_clock(Duration::from_millis(250));
11060        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
11061
11062        // // Ensure auto save with delay saves the item on close, even if the timer hasn't yet run out.
11063        pane.update_in(cx, |pane, window, cx| {
11064            pane.close_items(window, cx, SaveIntent::Close, &move |id| id == item_id)
11065        })
11066        .await
11067        .unwrap();
11068        assert!(!cx.has_pending_prompt());
11069        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
11070
11071        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
11072        workspace.update_in(cx, |workspace, window, cx| {
11073            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
11074        });
11075        item.update_in(cx, |item, _window, cx| {
11076            item.is_dirty = true;
11077            for project_item in &mut item.project_items {
11078                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
11079            }
11080        });
11081        cx.run_until_parked();
11082        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
11083
11084        // Autosave on focus change, ensuring closing the tab counts as such.
11085        item.update(cx, |item, cx| {
11086            SettingsStore::update_global(cx, |settings, cx| {
11087                settings.update_user_settings(cx, |settings| {
11088                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
11089                })
11090            });
11091            item.is_dirty = true;
11092            for project_item in &mut item.project_items {
11093                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
11094            }
11095        });
11096
11097        pane.update_in(cx, |pane, window, cx| {
11098            pane.close_items(window, cx, SaveIntent::Close, &move |id| id == item_id)
11099        })
11100        .await
11101        .unwrap();
11102        assert!(!cx.has_pending_prompt());
11103        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
11104
11105        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
11106        workspace.update_in(cx, |workspace, window, cx| {
11107            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
11108        });
11109        item.update_in(cx, |item, window, cx| {
11110            item.project_items[0].update(cx, |item, _| {
11111                item.entry_id = None;
11112            });
11113            item.is_dirty = true;
11114            window.blur();
11115        });
11116        cx.run_until_parked();
11117        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
11118
11119        // Ensure autosave is prevented for deleted files also when closing the buffer.
11120        let _close_items = pane.update_in(cx, |pane, window, cx| {
11121            pane.close_items(window, cx, SaveIntent::Close, &move |id| id == item_id)
11122        });
11123        cx.run_until_parked();
11124        assert!(cx.has_pending_prompt());
11125        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
11126    }
11127
11128    #[gpui::test]
11129    async fn test_autosave_on_focus_change_in_multibuffer(cx: &mut gpui::TestAppContext) {
11130        init_test(cx);
11131
11132        let fs = FakeFs::new(cx.executor());
11133        let project = Project::test(fs, [], cx).await;
11134        let (workspace, cx) =
11135            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11136
11137        // Create a multibuffer-like item with two child focus handles,
11138        // simulating individual buffer editors within a multibuffer.
11139        let item = cx.new(|cx| {
11140            TestItem::new(cx)
11141                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
11142                .with_child_focus_handles(2, cx)
11143        });
11144        workspace.update_in(cx, |workspace, window, cx| {
11145            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
11146        });
11147
11148        // Set autosave to OnFocusChange and focus the first child handle,
11149        // simulating the user's cursor being inside one of the multibuffer's excerpts.
11150        item.update_in(cx, |item, window, cx| {
11151            SettingsStore::update_global(cx, |settings, cx| {
11152                settings.update_user_settings(cx, |settings| {
11153                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
11154                })
11155            });
11156            item.is_dirty = true;
11157            window.focus(&item.child_focus_handles[0], cx);
11158        });
11159        cx.executor().run_until_parked();
11160        item.read_with(cx, |item, _| assert_eq!(item.save_count, 0));
11161
11162        // Moving focus from one child to another within the same item should
11163        // NOT trigger autosave — focus is still within the item's focus hierarchy.
11164        item.update_in(cx, |item, window, cx| {
11165            window.focus(&item.child_focus_handles[1], cx);
11166        });
11167        cx.executor().run_until_parked();
11168        item.read_with(cx, |item, _| {
11169            assert_eq!(
11170                item.save_count, 0,
11171                "Switching focus between children within the same item should not autosave"
11172            );
11173        });
11174
11175        // Blurring the item saves the file. This is the core regression scenario:
11176        // with `on_blur`, this would NOT trigger because `on_blur` only fires when
11177        // the item's own focus handle is the leaf that lost focus. In a multibuffer,
11178        // the leaf is always a child focus handle, so `on_blur` never detected
11179        // focus leaving the item.
11180        item.update_in(cx, |_, window, _| window.blur());
11181        cx.executor().run_until_parked();
11182        item.read_with(cx, |item, _| {
11183            assert_eq!(
11184                item.save_count, 1,
11185                "Blurring should trigger autosave when focus was on a child of the item"
11186            );
11187        });
11188
11189        // Deactivating the window should also trigger autosave when a child of
11190        // the multibuffer item currently owns focus.
11191        item.update_in(cx, |item, window, cx| {
11192            item.is_dirty = true;
11193            window.focus(&item.child_focus_handles[0], cx);
11194        });
11195        cx.executor().run_until_parked();
11196        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
11197
11198        cx.deactivate_window();
11199        item.read_with(cx, |item, _| {
11200            assert_eq!(
11201                item.save_count, 2,
11202                "Deactivating window should trigger autosave when focus was on a child"
11203            );
11204        });
11205    }
11206
11207    #[gpui::test]
11208    async fn test_pane_navigation(cx: &mut gpui::TestAppContext) {
11209        init_test(cx);
11210
11211        let fs = FakeFs::new(cx.executor());
11212
11213        let project = Project::test(fs, [], cx).await;
11214        let (workspace, cx) =
11215            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11216
11217        let item = cx.new(|cx| {
11218            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
11219        });
11220        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11221        let toolbar = pane.read_with(cx, |pane, _| pane.toolbar().clone());
11222        let toolbar_notify_count = Rc::new(RefCell::new(0));
11223
11224        workspace.update_in(cx, |workspace, window, cx| {
11225            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
11226            let toolbar_notification_count = toolbar_notify_count.clone();
11227            cx.observe_in(&toolbar, window, move |_, _, _, _| {
11228                *toolbar_notification_count.borrow_mut() += 1
11229            })
11230            .detach();
11231        });
11232
11233        pane.read_with(cx, |pane, _| {
11234            assert!(!pane.can_navigate_backward());
11235            assert!(!pane.can_navigate_forward());
11236        });
11237
11238        item.update_in(cx, |item, _, cx| {
11239            item.set_state("one".to_string(), cx);
11240        });
11241
11242        // Toolbar must be notified to re-render the navigation buttons
11243        assert_eq!(*toolbar_notify_count.borrow(), 1);
11244
11245        pane.read_with(cx, |pane, _| {
11246            assert!(pane.can_navigate_backward());
11247            assert!(!pane.can_navigate_forward());
11248        });
11249
11250        workspace
11251            .update_in(cx, |workspace, window, cx| {
11252                workspace.go_back(pane.downgrade(), window, cx)
11253            })
11254            .await
11255            .unwrap();
11256
11257        assert_eq!(*toolbar_notify_count.borrow(), 2);
11258        pane.read_with(cx, |pane, _| {
11259            assert!(!pane.can_navigate_backward());
11260            assert!(pane.can_navigate_forward());
11261        });
11262    }
11263
11264    /// Tests that the navigation history deduplicates entries for the same item.
11265    ///
11266    /// When navigating back and forth between items (e.g., A -> B -> A -> B -> A -> B -> C),
11267    /// the navigation history deduplicates by keeping only the most recent visit to each item,
11268    /// resulting in [A, B, C] instead of [A, B, A, B, A, B, C]. This ensures that Go Back (Ctrl-O)
11269    /// navigates through unique items efficiently: C -> B -> A, rather than bouncing between
11270    /// repeated entries: C -> B -> A -> B -> A -> B -> A.
11271    ///
11272    /// This behavior prevents the navigation history from growing unnecessarily large and provides
11273    /// a better user experience by eliminating redundant navigation steps when jumping between files.
11274    #[gpui::test]
11275    async fn test_navigation_history_deduplication(cx: &mut gpui::TestAppContext) {
11276        init_test(cx);
11277
11278        let fs = FakeFs::new(cx.executor());
11279        let project = Project::test(fs, [], cx).await;
11280        let (workspace, cx) =
11281            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11282
11283        let item_a = cx.new(|cx| {
11284            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "a.txt", cx)])
11285        });
11286        let item_b = cx.new(|cx| {
11287            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "b.txt", cx)])
11288        });
11289        let item_c = cx.new(|cx| {
11290            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "c.txt", cx)])
11291        });
11292
11293        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11294
11295        workspace.update_in(cx, |workspace, window, cx| {
11296            workspace.add_item_to_active_pane(Box::new(item_a.clone()), None, true, window, cx);
11297            workspace.add_item_to_active_pane(Box::new(item_b.clone()), None, true, window, cx);
11298            workspace.add_item_to_active_pane(Box::new(item_c.clone()), None, true, window, cx);
11299        });
11300
11301        workspace.update_in(cx, |workspace, window, cx| {
11302            workspace.activate_item(&item_a, false, false, window, cx);
11303        });
11304        cx.run_until_parked();
11305
11306        workspace.update_in(cx, |workspace, window, cx| {
11307            workspace.activate_item(&item_b, false, false, window, cx);
11308        });
11309        cx.run_until_parked();
11310
11311        workspace.update_in(cx, |workspace, window, cx| {
11312            workspace.activate_item(&item_a, false, false, window, cx);
11313        });
11314        cx.run_until_parked();
11315
11316        workspace.update_in(cx, |workspace, window, cx| {
11317            workspace.activate_item(&item_b, false, false, window, cx);
11318        });
11319        cx.run_until_parked();
11320
11321        workspace.update_in(cx, |workspace, window, cx| {
11322            workspace.activate_item(&item_a, false, false, window, cx);
11323        });
11324        cx.run_until_parked();
11325
11326        workspace.update_in(cx, |workspace, window, cx| {
11327            workspace.activate_item(&item_b, false, false, window, cx);
11328        });
11329        cx.run_until_parked();
11330
11331        workspace.update_in(cx, |workspace, window, cx| {
11332            workspace.activate_item(&item_c, false, false, window, cx);
11333        });
11334        cx.run_until_parked();
11335
11336        let backward_count = pane.read_with(cx, |pane, cx| {
11337            let mut count = 0;
11338            pane.nav_history().for_each_entry(cx, &mut |_, _| {
11339                count += 1;
11340            });
11341            count
11342        });
11343        assert!(
11344            backward_count <= 4,
11345            "Should have at most 4 entries, got {}",
11346            backward_count
11347        );
11348
11349        workspace
11350            .update_in(cx, |workspace, window, cx| {
11351                workspace.go_back(pane.downgrade(), window, cx)
11352            })
11353            .await
11354            .unwrap();
11355
11356        let active_item = workspace.read_with(cx, |workspace, cx| {
11357            workspace.active_item(cx).unwrap().item_id()
11358        });
11359        assert_eq!(
11360            active_item,
11361            item_b.entity_id(),
11362            "After first go_back, should be at item B"
11363        );
11364
11365        workspace
11366            .update_in(cx, |workspace, window, cx| {
11367                workspace.go_back(pane.downgrade(), window, cx)
11368            })
11369            .await
11370            .unwrap();
11371
11372        let active_item = workspace.read_with(cx, |workspace, cx| {
11373            workspace.active_item(cx).unwrap().item_id()
11374        });
11375        assert_eq!(
11376            active_item,
11377            item_a.entity_id(),
11378            "After second go_back, should be at item A"
11379        );
11380
11381        pane.read_with(cx, |pane, _| {
11382            assert!(pane.can_navigate_forward(), "Should be able to go forward");
11383        });
11384    }
11385
11386    #[gpui::test]
11387    async fn test_activate_last_pane(cx: &mut gpui::TestAppContext) {
11388        init_test(cx);
11389        let fs = FakeFs::new(cx.executor());
11390        let project = Project::test(fs, [], cx).await;
11391        let (multi_workspace, cx) =
11392            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
11393        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
11394
11395        workspace.update_in(cx, |workspace, window, cx| {
11396            let first_item = cx.new(|cx| {
11397                TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
11398            });
11399            workspace.add_item_to_active_pane(Box::new(first_item), None, true, window, cx);
11400            workspace.split_pane(
11401                workspace.active_pane().clone(),
11402                SplitDirection::Right,
11403                window,
11404                cx,
11405            );
11406            workspace.split_pane(
11407                workspace.active_pane().clone(),
11408                SplitDirection::Right,
11409                window,
11410                cx,
11411            );
11412        });
11413
11414        let (first_pane_id, target_last_pane_id) = workspace.update(cx, |workspace, _cx| {
11415            let panes = workspace.center.panes();
11416            assert!(panes.len() >= 2);
11417            (
11418                panes.first().expect("at least one pane").entity_id(),
11419                panes.last().expect("at least one pane").entity_id(),
11420            )
11421        });
11422
11423        workspace.update_in(cx, |workspace, window, cx| {
11424            workspace.activate_pane_at_index(&ActivatePane(0), window, cx);
11425        });
11426        workspace.update(cx, |workspace, _| {
11427            assert_eq!(workspace.active_pane().entity_id(), first_pane_id);
11428            assert_ne!(workspace.active_pane().entity_id(), target_last_pane_id);
11429        });
11430
11431        cx.dispatch_action(ActivateLastPane);
11432
11433        workspace.update(cx, |workspace, _| {
11434            assert_eq!(workspace.active_pane().entity_id(), target_last_pane_id);
11435        });
11436    }
11437
11438    #[gpui::test]
11439    async fn test_toggle_docks_and_panels(cx: &mut gpui::TestAppContext) {
11440        init_test(cx);
11441        let fs = FakeFs::new(cx.executor());
11442
11443        let project = Project::test(fs, [], cx).await;
11444        let (workspace, cx) =
11445            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11446
11447        let panel = workspace.update_in(cx, |workspace, window, cx| {
11448            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
11449            workspace.add_panel(panel.clone(), window, cx);
11450
11451            workspace
11452                .right_dock()
11453                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
11454
11455            panel
11456        });
11457
11458        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11459        pane.update_in(cx, |pane, window, cx| {
11460            let item = cx.new(TestItem::new);
11461            pane.add_item(Box::new(item), true, true, None, window, cx);
11462        });
11463
11464        // Transfer focus from center to panel
11465        workspace.update_in(cx, |workspace, window, cx| {
11466            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11467        });
11468
11469        workspace.update_in(cx, |workspace, window, cx| {
11470            assert!(workspace.right_dock().read(cx).is_open());
11471            assert!(!panel.is_zoomed(window, cx));
11472            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11473        });
11474
11475        // Transfer focus from panel to center
11476        workspace.update_in(cx, |workspace, window, cx| {
11477            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11478        });
11479
11480        workspace.update_in(cx, |workspace, window, cx| {
11481            assert!(workspace.right_dock().read(cx).is_open());
11482            assert!(!panel.is_zoomed(window, cx));
11483            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11484            assert!(pane.read(cx).focus_handle(cx).contains_focused(window, cx));
11485        });
11486
11487        // Close the dock
11488        workspace.update_in(cx, |workspace, window, cx| {
11489            workspace.toggle_dock(DockPosition::Right, window, cx);
11490        });
11491
11492        workspace.update_in(cx, |workspace, window, cx| {
11493            assert!(!workspace.right_dock().read(cx).is_open());
11494            assert!(!panel.is_zoomed(window, cx));
11495            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11496            assert!(pane.read(cx).focus_handle(cx).contains_focused(window, cx));
11497        });
11498
11499        // Open the dock
11500        workspace.update_in(cx, |workspace, window, cx| {
11501            workspace.toggle_dock(DockPosition::Right, window, cx);
11502        });
11503
11504        workspace.update_in(cx, |workspace, window, cx| {
11505            assert!(workspace.right_dock().read(cx).is_open());
11506            assert!(!panel.is_zoomed(window, cx));
11507            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11508        });
11509
11510        // Focus and zoom panel
11511        panel.update_in(cx, |panel, window, cx| {
11512            cx.focus_self(window);
11513            panel.set_zoomed(true, window, cx)
11514        });
11515
11516        workspace.update_in(cx, |workspace, window, cx| {
11517            assert!(workspace.right_dock().read(cx).is_open());
11518            assert!(panel.is_zoomed(window, cx));
11519            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11520        });
11521
11522        // Transfer focus to the center closes the dock
11523        workspace.update_in(cx, |workspace, window, cx| {
11524            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11525        });
11526
11527        workspace.update_in(cx, |workspace, window, cx| {
11528            assert!(!workspace.right_dock().read(cx).is_open());
11529            assert!(panel.is_zoomed(window, cx));
11530            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11531        });
11532
11533        // Transferring focus back to the panel keeps it zoomed
11534        workspace.update_in(cx, |workspace, window, cx| {
11535            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11536        });
11537
11538        workspace.update_in(cx, |workspace, window, cx| {
11539            assert!(workspace.right_dock().read(cx).is_open());
11540            assert!(panel.is_zoomed(window, cx));
11541            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11542        });
11543
11544        // Close the dock while it is zoomed
11545        workspace.update_in(cx, |workspace, window, cx| {
11546            workspace.toggle_dock(DockPosition::Right, window, cx)
11547        });
11548
11549        workspace.update_in(cx, |workspace, window, cx| {
11550            assert!(!workspace.right_dock().read(cx).is_open());
11551            assert!(panel.is_zoomed(window, cx));
11552            assert!(workspace.zoomed.is_none());
11553            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11554        });
11555
11556        // Opening the dock, when it's zoomed, retains focus
11557        workspace.update_in(cx, |workspace, window, cx| {
11558            workspace.toggle_dock(DockPosition::Right, window, cx)
11559        });
11560
11561        workspace.update_in(cx, |workspace, window, cx| {
11562            assert!(workspace.right_dock().read(cx).is_open());
11563            assert!(panel.is_zoomed(window, cx));
11564            assert!(workspace.zoomed.is_some());
11565            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11566        });
11567
11568        // Unzoom and close the panel, zoom the active pane.
11569        panel.update_in(cx, |panel, window, cx| panel.set_zoomed(false, window, cx));
11570        workspace.update_in(cx, |workspace, window, cx| {
11571            workspace.toggle_dock(DockPosition::Right, window, cx)
11572        });
11573        pane.update_in(cx, |pane, window, cx| {
11574            pane.toggle_zoom(&Default::default(), window, cx)
11575        });
11576
11577        // Opening a dock unzooms the pane.
11578        workspace.update_in(cx, |workspace, window, cx| {
11579            workspace.toggle_dock(DockPosition::Right, window, cx)
11580        });
11581        workspace.update_in(cx, |workspace, window, cx| {
11582            let pane = pane.read(cx);
11583            assert!(!pane.is_zoomed());
11584            assert!(!pane.focus_handle(cx).is_focused(window));
11585            assert!(workspace.right_dock().read(cx).is_open());
11586            assert!(workspace.zoomed.is_none());
11587        });
11588    }
11589
11590    #[gpui::test]
11591    async fn test_close_panel_on_toggle(cx: &mut gpui::TestAppContext) {
11592        init_test(cx);
11593        let fs = FakeFs::new(cx.executor());
11594
11595        let project = Project::test(fs, [], cx).await;
11596        let (workspace, cx) =
11597            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11598
11599        let panel = workspace.update_in(cx, |workspace, window, cx| {
11600            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
11601            workspace.add_panel(panel.clone(), window, cx);
11602            panel
11603        });
11604
11605        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11606        pane.update_in(cx, |pane, window, cx| {
11607            let item = cx.new(TestItem::new);
11608            pane.add_item(Box::new(item), true, true, None, window, cx);
11609        });
11610
11611        // Enable close_panel_on_toggle
11612        cx.update_global(|store: &mut SettingsStore, cx| {
11613            store.update_user_settings(cx, |settings| {
11614                settings.workspace.close_panel_on_toggle = Some(true);
11615            });
11616        });
11617
11618        // Panel starts closed. Toggling should open and focus it.
11619        workspace.update_in(cx, |workspace, window, cx| {
11620            assert!(!workspace.right_dock().read(cx).is_open());
11621            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11622        });
11623
11624        workspace.update_in(cx, |workspace, window, cx| {
11625            assert!(
11626                workspace.right_dock().read(cx).is_open(),
11627                "Dock should be open after toggling from center"
11628            );
11629            assert!(
11630                panel.read(cx).focus_handle(cx).contains_focused(window, cx),
11631                "Panel should be focused after toggling from center"
11632            );
11633        });
11634
11635        // Panel is open and focused. Toggling should close the panel and
11636        // return focus to the center.
11637        workspace.update_in(cx, |workspace, window, cx| {
11638            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11639        });
11640
11641        workspace.update_in(cx, |workspace, window, cx| {
11642            assert!(
11643                !workspace.right_dock().read(cx).is_open(),
11644                "Dock should be closed after toggling from focused panel"
11645            );
11646            assert!(
11647                !panel.read(cx).focus_handle(cx).contains_focused(window, cx),
11648                "Panel should not be focused after toggling from focused panel"
11649            );
11650        });
11651
11652        // Open the dock and focus something else so the panel is open but not
11653        // focused. Toggling should focus the panel (not close it).
11654        workspace.update_in(cx, |workspace, window, cx| {
11655            workspace
11656                .right_dock()
11657                .update(cx, |dock, cx| dock.set_open(true, window, cx));
11658            window.focus(&pane.read(cx).focus_handle(cx), cx);
11659        });
11660
11661        workspace.update_in(cx, |workspace, window, cx| {
11662            assert!(workspace.right_dock().read(cx).is_open());
11663            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11664            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11665        });
11666
11667        workspace.update_in(cx, |workspace, window, cx| {
11668            assert!(
11669                workspace.right_dock().read(cx).is_open(),
11670                "Dock should remain open when toggling focuses an open-but-unfocused panel"
11671            );
11672            assert!(
11673                panel.read(cx).focus_handle(cx).contains_focused(window, cx),
11674                "Panel should be focused after toggling an open-but-unfocused panel"
11675            );
11676        });
11677
11678        // Now disable the setting and verify the original behavior: toggling
11679        // from a focused panel moves focus to center but leaves the dock open.
11680        cx.update_global(|store: &mut SettingsStore, cx| {
11681            store.update_user_settings(cx, |settings| {
11682                settings.workspace.close_panel_on_toggle = Some(false);
11683            });
11684        });
11685
11686        workspace.update_in(cx, |workspace, window, cx| {
11687            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11688        });
11689
11690        workspace.update_in(cx, |workspace, window, cx| {
11691            assert!(
11692                workspace.right_dock().read(cx).is_open(),
11693                "Dock should remain open when setting is disabled"
11694            );
11695            assert!(
11696                !panel.read(cx).focus_handle(cx).contains_focused(window, cx),
11697                "Panel should not be focused after toggling with setting disabled"
11698            );
11699        });
11700    }
11701
11702    #[gpui::test]
11703    async fn test_pane_zoom_in_out(cx: &mut TestAppContext) {
11704        init_test(cx);
11705        let fs = FakeFs::new(cx.executor());
11706
11707        let project = Project::test(fs, [], cx).await;
11708        let (workspace, cx) =
11709            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11710
11711        let pane = workspace.update_in(cx, |workspace, _window, _cx| {
11712            workspace.active_pane().clone()
11713        });
11714
11715        // Add an item to the pane so it can be zoomed
11716        workspace.update_in(cx, |workspace, window, cx| {
11717            let item = cx.new(TestItem::new);
11718            workspace.add_item(pane.clone(), Box::new(item), None, true, true, window, cx);
11719        });
11720
11721        // Initially not zoomed
11722        workspace.update_in(cx, |workspace, _window, cx| {
11723            assert!(!pane.read(cx).is_zoomed(), "Pane starts unzoomed");
11724            assert!(
11725                workspace.zoomed.is_none(),
11726                "Workspace should track no zoomed pane"
11727            );
11728            assert!(pane.read(cx).items_len() > 0, "Pane should have items");
11729        });
11730
11731        // Zoom In
11732        pane.update_in(cx, |pane, window, cx| {
11733            pane.zoom_in(&crate::ZoomIn, window, cx);
11734        });
11735
11736        workspace.update_in(cx, |workspace, window, cx| {
11737            assert!(
11738                pane.read(cx).is_zoomed(),
11739                "Pane should be zoomed after ZoomIn"
11740            );
11741            assert!(
11742                workspace.zoomed.is_some(),
11743                "Workspace should track the zoomed pane"
11744            );
11745            assert!(
11746                pane.read(cx).focus_handle(cx).contains_focused(window, cx),
11747                "ZoomIn should focus the pane"
11748            );
11749        });
11750
11751        // Zoom In again is a no-op
11752        pane.update_in(cx, |pane, window, cx| {
11753            pane.zoom_in(&crate::ZoomIn, window, cx);
11754        });
11755
11756        workspace.update_in(cx, |workspace, window, cx| {
11757            assert!(pane.read(cx).is_zoomed(), "Second ZoomIn keeps pane zoomed");
11758            assert!(
11759                workspace.zoomed.is_some(),
11760                "Workspace still tracks zoomed pane"
11761            );
11762            assert!(
11763                pane.read(cx).focus_handle(cx).contains_focused(window, cx),
11764                "Pane remains focused after repeated ZoomIn"
11765            );
11766        });
11767
11768        // Zoom Out
11769        pane.update_in(cx, |pane, window, cx| {
11770            pane.zoom_out(&crate::ZoomOut, window, cx);
11771        });
11772
11773        workspace.update_in(cx, |workspace, _window, cx| {
11774            assert!(
11775                !pane.read(cx).is_zoomed(),
11776                "Pane should unzoom after ZoomOut"
11777            );
11778            assert!(
11779                workspace.zoomed.is_none(),
11780                "Workspace clears zoom tracking after ZoomOut"
11781            );
11782        });
11783
11784        // Zoom Out again is a no-op
11785        pane.update_in(cx, |pane, window, cx| {
11786            pane.zoom_out(&crate::ZoomOut, window, cx);
11787        });
11788
11789        workspace.update_in(cx, |workspace, _window, cx| {
11790            assert!(
11791                !pane.read(cx).is_zoomed(),
11792                "Second ZoomOut keeps pane unzoomed"
11793            );
11794            assert!(
11795                workspace.zoomed.is_none(),
11796                "Workspace remains without zoomed pane"
11797            );
11798        });
11799    }
11800
11801    #[gpui::test]
11802    async fn test_toggle_all_docks(cx: &mut gpui::TestAppContext) {
11803        init_test(cx);
11804        let fs = FakeFs::new(cx.executor());
11805
11806        let project = Project::test(fs, [], cx).await;
11807        let (workspace, cx) =
11808            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11809        workspace.update_in(cx, |workspace, window, cx| {
11810            // Open two docks
11811            let left_dock = workspace.dock_at_position(DockPosition::Left);
11812            let right_dock = workspace.dock_at_position(DockPosition::Right);
11813
11814            left_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
11815            right_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
11816
11817            assert!(left_dock.read(cx).is_open());
11818            assert!(right_dock.read(cx).is_open());
11819        });
11820
11821        workspace.update_in(cx, |workspace, window, cx| {
11822            // Toggle all docks - should close both
11823            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
11824
11825            let left_dock = workspace.dock_at_position(DockPosition::Left);
11826            let right_dock = workspace.dock_at_position(DockPosition::Right);
11827            assert!(!left_dock.read(cx).is_open());
11828            assert!(!right_dock.read(cx).is_open());
11829        });
11830
11831        workspace.update_in(cx, |workspace, window, cx| {
11832            // Toggle again - should reopen both
11833            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
11834
11835            let left_dock = workspace.dock_at_position(DockPosition::Left);
11836            let right_dock = workspace.dock_at_position(DockPosition::Right);
11837            assert!(left_dock.read(cx).is_open());
11838            assert!(right_dock.read(cx).is_open());
11839        });
11840    }
11841
11842    #[gpui::test]
11843    async fn test_toggle_all_with_manual_close(cx: &mut gpui::TestAppContext) {
11844        init_test(cx);
11845        let fs = FakeFs::new(cx.executor());
11846
11847        let project = Project::test(fs, [], cx).await;
11848        let (workspace, cx) =
11849            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11850        workspace.update_in(cx, |workspace, window, cx| {
11851            // Open two docks
11852            let left_dock = workspace.dock_at_position(DockPosition::Left);
11853            let right_dock = workspace.dock_at_position(DockPosition::Right);
11854
11855            left_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
11856            right_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
11857
11858            assert!(left_dock.read(cx).is_open());
11859            assert!(right_dock.read(cx).is_open());
11860        });
11861
11862        workspace.update_in(cx, |workspace, window, cx| {
11863            // Close them manually
11864            workspace.toggle_dock(DockPosition::Left, window, cx);
11865            workspace.toggle_dock(DockPosition::Right, window, cx);
11866
11867            let left_dock = workspace.dock_at_position(DockPosition::Left);
11868            let right_dock = workspace.dock_at_position(DockPosition::Right);
11869            assert!(!left_dock.read(cx).is_open());
11870            assert!(!right_dock.read(cx).is_open());
11871        });
11872
11873        workspace.update_in(cx, |workspace, window, cx| {
11874            // Toggle all docks - only last closed (right dock) should reopen
11875            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
11876
11877            let left_dock = workspace.dock_at_position(DockPosition::Left);
11878            let right_dock = workspace.dock_at_position(DockPosition::Right);
11879            assert!(!left_dock.read(cx).is_open());
11880            assert!(right_dock.read(cx).is_open());
11881        });
11882    }
11883
11884    #[gpui::test]
11885    async fn test_toggle_all_docks_after_dock_move(cx: &mut gpui::TestAppContext) {
11886        init_test(cx);
11887        let fs = FakeFs::new(cx.executor());
11888        let project = Project::test(fs, [], cx).await;
11889        let (multi_workspace, cx) =
11890            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
11891        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
11892
11893        // Open two docks (left and right) with one panel each
11894        let (left_panel, right_panel) = workspace.update_in(cx, |workspace, window, cx| {
11895            let left_panel = cx.new(|cx| TestPanel::new(DockPosition::Left, 100, cx));
11896            workspace.add_panel(left_panel.clone(), window, cx);
11897
11898            let right_panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 101, cx));
11899            workspace.add_panel(right_panel.clone(), window, cx);
11900
11901            workspace.toggle_dock(DockPosition::Left, window, cx);
11902            workspace.toggle_dock(DockPosition::Right, window, cx);
11903
11904            // Verify initial state
11905            assert!(
11906                workspace.left_dock().read(cx).is_open(),
11907                "Left dock should be open"
11908            );
11909            assert_eq!(
11910                workspace
11911                    .left_dock()
11912                    .read(cx)
11913                    .visible_panel()
11914                    .unwrap()
11915                    .panel_id(),
11916                left_panel.panel_id(),
11917                "Left panel should be visible in left dock"
11918            );
11919            assert!(
11920                workspace.right_dock().read(cx).is_open(),
11921                "Right dock should be open"
11922            );
11923            assert_eq!(
11924                workspace
11925                    .right_dock()
11926                    .read(cx)
11927                    .visible_panel()
11928                    .unwrap()
11929                    .panel_id(),
11930                right_panel.panel_id(),
11931                "Right panel should be visible in right dock"
11932            );
11933            assert!(
11934                !workspace.bottom_dock().read(cx).is_open(),
11935                "Bottom dock should be closed"
11936            );
11937
11938            (left_panel, right_panel)
11939        });
11940
11941        // Focus the left panel and move it to the next position (bottom dock)
11942        workspace.update_in(cx, |workspace, window, cx| {
11943            workspace.toggle_panel_focus::<TestPanel>(window, cx); // Focus left panel
11944            assert!(
11945                left_panel.read(cx).focus_handle(cx).is_focused(window),
11946                "Left panel should be focused"
11947            );
11948        });
11949
11950        cx.dispatch_action(MoveFocusedPanelToNextPosition);
11951
11952        // Verify the left panel has moved to the bottom dock, and the bottom dock is now open
11953        workspace.update(cx, |workspace, cx| {
11954            assert!(
11955                !workspace.left_dock().read(cx).is_open(),
11956                "Left dock should be closed"
11957            );
11958            assert!(
11959                workspace.bottom_dock().read(cx).is_open(),
11960                "Bottom dock should now be open"
11961            );
11962            assert_eq!(
11963                left_panel.read(cx).position,
11964                DockPosition::Bottom,
11965                "Left panel should now be in the bottom dock"
11966            );
11967            assert_eq!(
11968                workspace
11969                    .bottom_dock()
11970                    .read(cx)
11971                    .visible_panel()
11972                    .unwrap()
11973                    .panel_id(),
11974                left_panel.panel_id(),
11975                "Left panel should be the visible panel in the bottom dock"
11976            );
11977        });
11978
11979        // Toggle all docks off
11980        workspace.update_in(cx, |workspace, window, cx| {
11981            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
11982            assert!(
11983                !workspace.left_dock().read(cx).is_open(),
11984                "Left dock should be closed"
11985            );
11986            assert!(
11987                !workspace.right_dock().read(cx).is_open(),
11988                "Right dock should be closed"
11989            );
11990            assert!(
11991                !workspace.bottom_dock().read(cx).is_open(),
11992                "Bottom dock should be closed"
11993            );
11994        });
11995
11996        // Toggle all docks back on and verify positions are restored
11997        workspace.update_in(cx, |workspace, window, cx| {
11998            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
11999            assert!(
12000                !workspace.left_dock().read(cx).is_open(),
12001                "Left dock should remain closed"
12002            );
12003            assert!(
12004                workspace.right_dock().read(cx).is_open(),
12005                "Right dock should remain open"
12006            );
12007            assert!(
12008                workspace.bottom_dock().read(cx).is_open(),
12009                "Bottom dock should remain open"
12010            );
12011            assert_eq!(
12012                left_panel.read(cx).position,
12013                DockPosition::Bottom,
12014                "Left panel should remain in the bottom dock"
12015            );
12016            assert_eq!(
12017                right_panel.read(cx).position,
12018                DockPosition::Right,
12019                "Right panel should remain in the right dock"
12020            );
12021            assert_eq!(
12022                workspace
12023                    .bottom_dock()
12024                    .read(cx)
12025                    .visible_panel()
12026                    .unwrap()
12027                    .panel_id(),
12028                left_panel.panel_id(),
12029                "Left panel should be the visible panel in the right dock"
12030            );
12031        });
12032    }
12033
12034    #[gpui::test]
12035    async fn test_join_pane_into_next(cx: &mut gpui::TestAppContext) {
12036        init_test(cx);
12037
12038        let fs = FakeFs::new(cx.executor());
12039
12040        let project = Project::test(fs, None, cx).await;
12041        let (workspace, cx) =
12042            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
12043
12044        // Let's arrange the panes like this:
12045        //
12046        // +-----------------------+
12047        // |         top           |
12048        // +------+--------+-------+
12049        // | left | center | right |
12050        // +------+--------+-------+
12051        // |        bottom         |
12052        // +-----------------------+
12053
12054        let top_item = cx.new(|cx| {
12055            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "top.txt", cx)])
12056        });
12057        let bottom_item = cx.new(|cx| {
12058            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "bottom.txt", cx)])
12059        });
12060        let left_item = cx.new(|cx| {
12061            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "left.txt", cx)])
12062        });
12063        let right_item = cx.new(|cx| {
12064            TestItem::new(cx).with_project_items(&[TestProjectItem::new(4, "right.txt", cx)])
12065        });
12066        let center_item = cx.new(|cx| {
12067            TestItem::new(cx).with_project_items(&[TestProjectItem::new(5, "center.txt", cx)])
12068        });
12069
12070        let top_pane_id = workspace.update_in(cx, |workspace, window, cx| {
12071            let top_pane_id = workspace.active_pane().entity_id();
12072            workspace.add_item_to_active_pane(Box::new(top_item.clone()), None, false, window, cx);
12073            workspace.split_pane(
12074                workspace.active_pane().clone(),
12075                SplitDirection::Down,
12076                window,
12077                cx,
12078            );
12079            top_pane_id
12080        });
12081        let bottom_pane_id = workspace.update_in(cx, |workspace, window, cx| {
12082            let bottom_pane_id = workspace.active_pane().entity_id();
12083            workspace.add_item_to_active_pane(
12084                Box::new(bottom_item.clone()),
12085                None,
12086                false,
12087                window,
12088                cx,
12089            );
12090            workspace.split_pane(
12091                workspace.active_pane().clone(),
12092                SplitDirection::Up,
12093                window,
12094                cx,
12095            );
12096            bottom_pane_id
12097        });
12098        let left_pane_id = workspace.update_in(cx, |workspace, window, cx| {
12099            let left_pane_id = workspace.active_pane().entity_id();
12100            workspace.add_item_to_active_pane(Box::new(left_item.clone()), None, false, window, cx);
12101            workspace.split_pane(
12102                workspace.active_pane().clone(),
12103                SplitDirection::Right,
12104                window,
12105                cx,
12106            );
12107            left_pane_id
12108        });
12109        let right_pane_id = workspace.update_in(cx, |workspace, window, cx| {
12110            let right_pane_id = workspace.active_pane().entity_id();
12111            workspace.add_item_to_active_pane(
12112                Box::new(right_item.clone()),
12113                None,
12114                false,
12115                window,
12116                cx,
12117            );
12118            workspace.split_pane(
12119                workspace.active_pane().clone(),
12120                SplitDirection::Left,
12121                window,
12122                cx,
12123            );
12124            right_pane_id
12125        });
12126        let center_pane_id = workspace.update_in(cx, |workspace, window, cx| {
12127            let center_pane_id = workspace.active_pane().entity_id();
12128            workspace.add_item_to_active_pane(
12129                Box::new(center_item.clone()),
12130                None,
12131                false,
12132                window,
12133                cx,
12134            );
12135            center_pane_id
12136        });
12137        cx.executor().run_until_parked();
12138
12139        workspace.update_in(cx, |workspace, window, cx| {
12140            assert_eq!(center_pane_id, workspace.active_pane().entity_id());
12141
12142            // Join into next from center pane into right
12143            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
12144        });
12145
12146        workspace.update_in(cx, |workspace, window, cx| {
12147            let active_pane = workspace.active_pane();
12148            assert_eq!(right_pane_id, active_pane.entity_id());
12149            assert_eq!(2, active_pane.read(cx).items_len());
12150            let item_ids_in_pane =
12151                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
12152            assert!(item_ids_in_pane.contains(&center_item.item_id()));
12153            assert!(item_ids_in_pane.contains(&right_item.item_id()));
12154
12155            // Join into next from right pane into bottom
12156            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
12157        });
12158
12159        workspace.update_in(cx, |workspace, window, cx| {
12160            let active_pane = workspace.active_pane();
12161            assert_eq!(bottom_pane_id, active_pane.entity_id());
12162            assert_eq!(3, active_pane.read(cx).items_len());
12163            let item_ids_in_pane =
12164                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
12165            assert!(item_ids_in_pane.contains(&center_item.item_id()));
12166            assert!(item_ids_in_pane.contains(&right_item.item_id()));
12167            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
12168
12169            // Join into next from bottom pane into left
12170            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
12171        });
12172
12173        workspace.update_in(cx, |workspace, window, cx| {
12174            let active_pane = workspace.active_pane();
12175            assert_eq!(left_pane_id, active_pane.entity_id());
12176            assert_eq!(4, active_pane.read(cx).items_len());
12177            let item_ids_in_pane =
12178                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
12179            assert!(item_ids_in_pane.contains(&center_item.item_id()));
12180            assert!(item_ids_in_pane.contains(&right_item.item_id()));
12181            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
12182            assert!(item_ids_in_pane.contains(&left_item.item_id()));
12183
12184            // Join into next from left pane into top
12185            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
12186        });
12187
12188        workspace.update_in(cx, |workspace, window, cx| {
12189            let active_pane = workspace.active_pane();
12190            assert_eq!(top_pane_id, active_pane.entity_id());
12191            assert_eq!(5, active_pane.read(cx).items_len());
12192            let item_ids_in_pane =
12193                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
12194            assert!(item_ids_in_pane.contains(&center_item.item_id()));
12195            assert!(item_ids_in_pane.contains(&right_item.item_id()));
12196            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
12197            assert!(item_ids_in_pane.contains(&left_item.item_id()));
12198            assert!(item_ids_in_pane.contains(&top_item.item_id()));
12199
12200            // Single pane left: no-op
12201            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx)
12202        });
12203
12204        workspace.update(cx, |workspace, _cx| {
12205            let active_pane = workspace.active_pane();
12206            assert_eq!(top_pane_id, active_pane.entity_id());
12207        });
12208    }
12209
12210    fn add_an_item_to_active_pane(
12211        cx: &mut VisualTestContext,
12212        workspace: &Entity<Workspace>,
12213        item_id: u64,
12214    ) -> Entity<TestItem> {
12215        let item = cx.new(|cx| {
12216            TestItem::new(cx).with_project_items(&[TestProjectItem::new(
12217                item_id,
12218                "item{item_id}.txt",
12219                cx,
12220            )])
12221        });
12222        workspace.update_in(cx, |workspace, window, cx| {
12223            workspace.add_item_to_active_pane(Box::new(item.clone()), None, false, window, cx);
12224        });
12225        item
12226    }
12227
12228    fn split_pane(cx: &mut VisualTestContext, workspace: &Entity<Workspace>) -> Entity<Pane> {
12229        workspace.update_in(cx, |workspace, window, cx| {
12230            workspace.split_pane(
12231                workspace.active_pane().clone(),
12232                SplitDirection::Right,
12233                window,
12234                cx,
12235            )
12236        })
12237    }
12238
12239    #[gpui::test]
12240    async fn test_join_all_panes(cx: &mut gpui::TestAppContext) {
12241        init_test(cx);
12242        let fs = FakeFs::new(cx.executor());
12243        let project = Project::test(fs, None, cx).await;
12244        let (workspace, cx) =
12245            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
12246
12247        add_an_item_to_active_pane(cx, &workspace, 1);
12248        split_pane(cx, &workspace);
12249        add_an_item_to_active_pane(cx, &workspace, 2);
12250        split_pane(cx, &workspace); // empty pane
12251        split_pane(cx, &workspace);
12252        let last_item = add_an_item_to_active_pane(cx, &workspace, 3);
12253
12254        cx.executor().run_until_parked();
12255
12256        workspace.update(cx, |workspace, cx| {
12257            let num_panes = workspace.panes().len();
12258            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
12259            let active_item = workspace
12260                .active_pane()
12261                .read(cx)
12262                .active_item()
12263                .expect("item is in focus");
12264
12265            assert_eq!(num_panes, 4);
12266            assert_eq!(num_items_in_current_pane, 1);
12267            assert_eq!(active_item.item_id(), last_item.item_id());
12268        });
12269
12270        workspace.update_in(cx, |workspace, window, cx| {
12271            workspace.join_all_panes(window, cx);
12272        });
12273
12274        workspace.update(cx, |workspace, cx| {
12275            let num_panes = workspace.panes().len();
12276            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
12277            let active_item = workspace
12278                .active_pane()
12279                .read(cx)
12280                .active_item()
12281                .expect("item is in focus");
12282
12283            assert_eq!(num_panes, 1);
12284            assert_eq!(num_items_in_current_pane, 3);
12285            assert_eq!(active_item.item_id(), last_item.item_id());
12286        });
12287    }
12288
12289    #[gpui::test]
12290    async fn test_flexible_dock_sizing(cx: &mut gpui::TestAppContext) {
12291        init_test(cx);
12292        let fs = FakeFs::new(cx.executor());
12293
12294        let project = Project::test(fs, [], cx).await;
12295        let (multi_workspace, cx) =
12296            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
12297        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
12298
12299        workspace.update(cx, |workspace, _cx| {
12300            workspace.bounds.size.width = px(800.);
12301        });
12302
12303        workspace.update_in(cx, |workspace, window, cx| {
12304            let panel = cx.new(|cx| TestPanel::new_flexible(DockPosition::Right, 100, cx));
12305            workspace.add_panel(panel, window, cx);
12306            workspace.toggle_dock(DockPosition::Right, window, cx);
12307        });
12308
12309        let (panel, resized_width, ratio_basis_width) =
12310            workspace.update_in(cx, |workspace, window, cx| {
12311                let item = cx.new(|cx| {
12312                    TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
12313                });
12314                workspace.add_item_to_active_pane(Box::new(item), None, true, window, cx);
12315
12316                let dock = workspace.right_dock().read(cx);
12317                let workspace_width = workspace.bounds.size.width;
12318                let initial_width = dock
12319                    .active_panel()
12320                    .map(|panel| {
12321                        workspace.resolved_dock_panel_size(&dock, panel.as_ref(), window, cx)
12322                    })
12323                    .expect("flexible dock should have an initial width");
12324
12325                assert_eq!(initial_width, workspace_width / 2.);
12326
12327                workspace.resize_right_dock(px(300.), window, cx);
12328
12329                let dock = workspace.right_dock().read(cx);
12330                let resized_width = dock
12331                    .active_panel()
12332                    .map(|panel| {
12333                        workspace.resolved_dock_panel_size(&dock, panel.as_ref(), window, cx)
12334                    })
12335                    .expect("flexible dock should keep its resized width");
12336
12337                assert_eq!(resized_width, px(300.));
12338
12339                let panel = workspace
12340                    .right_dock()
12341                    .read(cx)
12342                    .visible_panel()
12343                    .expect("flexible dock should have a visible panel")
12344                    .panel_id();
12345
12346                (panel, resized_width, workspace_width)
12347            });
12348
12349        workspace.update_in(cx, |workspace, window, cx| {
12350            workspace.toggle_dock(DockPosition::Right, window, cx);
12351            workspace.toggle_dock(DockPosition::Right, window, cx);
12352
12353            let dock = workspace.right_dock().read(cx);
12354            let reopened_width = dock
12355                .active_panel()
12356                .map(|panel| workspace.resolved_dock_panel_size(&dock, panel.as_ref(), window, cx))
12357                .expect("flexible dock should restore when reopened");
12358
12359            assert_eq!(reopened_width, resized_width);
12360
12361            let right_dock = workspace.right_dock().read(cx);
12362            let flexible_panel = right_dock
12363                .visible_panel()
12364                .expect("flexible dock should still have a visible panel");
12365            assert_eq!(flexible_panel.panel_id(), panel);
12366            assert_eq!(
12367                right_dock
12368                    .stored_panel_size_state(flexible_panel.as_ref())
12369                    .and_then(|size_state| size_state.flexible_size_ratio),
12370                Some(resized_width.to_f64() as f32 / workspace.bounds.size.width.to_f64() as f32)
12371            );
12372        });
12373
12374        workspace.update_in(cx, |workspace, window, cx| {
12375            workspace.split_pane(
12376                workspace.active_pane().clone(),
12377                SplitDirection::Right,
12378                window,
12379                cx,
12380            );
12381
12382            let dock = workspace.right_dock().read(cx);
12383            let split_width = dock
12384                .active_panel()
12385                .map(|panel| workspace.resolved_dock_panel_size(&dock, panel.as_ref(), window, cx))
12386                .expect("flexible dock should keep its user-resized proportion");
12387
12388            assert_eq!(split_width, px(300.));
12389
12390            workspace.bounds.size.width = px(1600.);
12391
12392            let dock = workspace.right_dock().read(cx);
12393            let resized_window_width = dock
12394                .active_panel()
12395                .map(|panel| workspace.resolved_dock_panel_size(&dock, panel.as_ref(), window, cx))
12396                .expect("flexible dock should preserve proportional size on window resize");
12397
12398            assert_eq!(
12399                resized_window_width,
12400                workspace.bounds.size.width
12401                    * (resized_width.to_f64() as f32 / ratio_basis_width.to_f64() as f32)
12402            );
12403        });
12404    }
12405
12406    #[gpui::test]
12407    async fn test_panel_size_state_persistence(cx: &mut gpui::TestAppContext) {
12408        init_test(cx);
12409        let fs = FakeFs::new(cx.executor());
12410
12411        // Fixed-width panel: pixel size is persisted to KVP and restored on re-add.
12412        {
12413            let project = Project::test(fs.clone(), [], cx).await;
12414            let (multi_workspace, cx) =
12415                cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
12416            let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
12417
12418            workspace.update(cx, |workspace, _cx| {
12419                workspace.set_random_database_id();
12420                workspace.bounds.size.width = px(800.);
12421            });
12422
12423            let panel = workspace.update_in(cx, |workspace, window, cx| {
12424                let panel = cx.new(|cx| TestPanel::new(DockPosition::Left, 100, cx));
12425                workspace.add_panel(panel.clone(), window, cx);
12426                workspace.toggle_dock(DockPosition::Left, window, cx);
12427                panel
12428            });
12429
12430            workspace.update_in(cx, |workspace, window, cx| {
12431                workspace.resize_left_dock(px(350.), window, cx);
12432            });
12433
12434            cx.run_until_parked();
12435
12436            let persisted = workspace.read_with(cx, |workspace, cx| {
12437                workspace.persisted_panel_size_state(TestPanel::panel_key(), cx)
12438            });
12439            assert_eq!(
12440                persisted.and_then(|s| s.size),
12441                Some(px(350.)),
12442                "fixed-width panel size should be persisted to KVP"
12443            );
12444
12445            // Remove the panel and re-add a fresh instance with the same key.
12446            // The new instance should have its size state restored from KVP.
12447            workspace.update_in(cx, |workspace, window, cx| {
12448                workspace.remove_panel(&panel, window, cx);
12449            });
12450
12451            workspace.update_in(cx, |workspace, window, cx| {
12452                let new_panel = cx.new(|cx| TestPanel::new(DockPosition::Left, 100, cx));
12453                workspace.add_panel(new_panel, window, cx);
12454
12455                let left_dock = workspace.left_dock().read(cx);
12456                let size_state = left_dock
12457                    .panel::<TestPanel>()
12458                    .and_then(|p| left_dock.stored_panel_size_state(&p));
12459                assert_eq!(
12460                    size_state.and_then(|s| s.size),
12461                    Some(px(350.)),
12462                    "re-added fixed-width panel should restore persisted size from KVP"
12463                );
12464            });
12465        }
12466
12467        // Flexible panel: both pixel size and ratio are persisted and restored.
12468        {
12469            let project = Project::test(fs.clone(), [], cx).await;
12470            let (multi_workspace, cx) =
12471                cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
12472            let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
12473
12474            workspace.update(cx, |workspace, _cx| {
12475                workspace.set_random_database_id();
12476                workspace.bounds.size.width = px(800.);
12477            });
12478
12479            let panel = workspace.update_in(cx, |workspace, window, cx| {
12480                let item = cx.new(|cx| {
12481                    TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
12482                });
12483                workspace.add_item_to_active_pane(Box::new(item), None, true, window, cx);
12484
12485                let panel = cx.new(|cx| TestPanel::new_flexible(DockPosition::Right, 100, cx));
12486                workspace.add_panel(panel.clone(), window, cx);
12487                workspace.toggle_dock(DockPosition::Right, window, cx);
12488                panel
12489            });
12490
12491            workspace.update_in(cx, |workspace, window, cx| {
12492                workspace.resize_right_dock(px(300.), window, cx);
12493            });
12494
12495            cx.run_until_parked();
12496
12497            let persisted = workspace
12498                .read_with(cx, |workspace, cx| {
12499                    workspace.persisted_panel_size_state(TestPanel::panel_key(), cx)
12500                })
12501                .expect("flexible panel state should be persisted to KVP");
12502            assert_eq!(
12503                persisted.size, None,
12504                "flexible panel should not persist a redundant pixel size"
12505            );
12506            let original_ratio = persisted
12507                .flexible_size_ratio
12508                .expect("flexible panel ratio should be persisted");
12509
12510            // Remove the panel and re-add: both size and ratio should be restored.
12511            workspace.update_in(cx, |workspace, window, cx| {
12512                workspace.remove_panel(&panel, window, cx);
12513            });
12514
12515            workspace.update_in(cx, |workspace, window, cx| {
12516                let new_panel = cx.new(|cx| TestPanel::new_flexible(DockPosition::Right, 100, cx));
12517                workspace.add_panel(new_panel, window, cx);
12518
12519                let right_dock = workspace.right_dock().read(cx);
12520                let size_state = right_dock
12521                    .panel::<TestPanel>()
12522                    .and_then(|p| right_dock.stored_panel_size_state(&p))
12523                    .expect("re-added flexible panel should have restored size state from KVP");
12524                assert_eq!(
12525                    size_state.size, None,
12526                    "re-added flexible panel should not have a persisted pixel size"
12527                );
12528                assert_eq!(
12529                    size_state.flexible_size_ratio,
12530                    Some(original_ratio),
12531                    "re-added flexible panel should restore persisted ratio"
12532                );
12533            });
12534        }
12535    }
12536
12537    #[gpui::test]
12538    async fn test_flexible_panel_left_dock_sizing(cx: &mut gpui::TestAppContext) {
12539        init_test(cx);
12540        let fs = FakeFs::new(cx.executor());
12541
12542        let project = Project::test(fs, [], cx).await;
12543        let (multi_workspace, cx) =
12544            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
12545        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
12546
12547        workspace.update(cx, |workspace, _cx| {
12548            workspace.bounds.size.width = px(900.);
12549        });
12550
12551        // Step 1: Add a tab to the center pane then open a flexible panel in the left
12552        // dock. With one full-width center pane the default ratio is 0.5, so the panel
12553        // and the center pane each take half the workspace width.
12554        workspace.update_in(cx, |workspace, window, cx| {
12555            let item = cx.new(|cx| {
12556                TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
12557            });
12558            workspace.add_item_to_active_pane(Box::new(item), None, true, window, cx);
12559
12560            let panel = cx.new(|cx| TestPanel::new_flexible(DockPosition::Left, 100, cx));
12561            workspace.add_panel(panel, window, cx);
12562            workspace.toggle_dock(DockPosition::Left, window, cx);
12563
12564            let left_dock = workspace.left_dock().read(cx);
12565            let left_width = left_dock
12566                .active_panel()
12567                .map(|p| workspace.resolved_dock_panel_size(&left_dock, p.as_ref(), window, cx))
12568                .expect("left dock should have an active panel");
12569
12570            assert_eq!(
12571                left_width,
12572                workspace.bounds.size.width / 2.,
12573                "flexible left panel should split evenly with the center pane"
12574            );
12575        });
12576
12577        // Step 2: Split the center pane vertically (top/bottom). Vertical splits do not
12578        // change horizontal width fractions, so the flexible panel stays at the same
12579        // width as each half of the split.
12580        workspace.update_in(cx, |workspace, window, cx| {
12581            workspace.split_pane(
12582                workspace.active_pane().clone(),
12583                SplitDirection::Down,
12584                window,
12585                cx,
12586            );
12587
12588            let left_dock = workspace.left_dock().read(cx);
12589            let left_width = left_dock
12590                .active_panel()
12591                .map(|p| workspace.resolved_dock_panel_size(&left_dock, p.as_ref(), window, cx))
12592                .expect("left dock should still have an active panel after vertical split");
12593
12594            assert_eq!(
12595                left_width,
12596                workspace.bounds.size.width / 2.,
12597                "flexible left panel width should match each vertically-split pane"
12598            );
12599        });
12600
12601        // Step 3: Open a fixed-width panel in the right dock. The right dock's default
12602        // size reduces the available width, so the flexible left panel and the center
12603        // panes all shrink proportionally to accommodate it.
12604        workspace.update_in(cx, |workspace, window, cx| {
12605            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 200, cx));
12606            workspace.add_panel(panel, window, cx);
12607            workspace.toggle_dock(DockPosition::Right, window, cx);
12608
12609            let right_dock = workspace.right_dock().read(cx);
12610            let right_width = right_dock
12611                .active_panel()
12612                .map(|p| workspace.resolved_dock_panel_size(&right_dock, p.as_ref(), window, cx))
12613                .expect("right dock should have an active panel");
12614
12615            let left_dock = workspace.left_dock().read(cx);
12616            let left_width = left_dock
12617                .active_panel()
12618                .map(|p| workspace.resolved_dock_panel_size(&left_dock, p.as_ref(), window, cx))
12619                .expect("left dock should still have an active panel");
12620
12621            let available_width = workspace.bounds.size.width - right_width;
12622            assert_eq!(
12623                left_width,
12624                available_width / 2.,
12625                "flexible left panel should shrink proportionally as the right dock takes space"
12626            );
12627        });
12628    }
12629
12630    struct TestModal(FocusHandle);
12631
12632    impl TestModal {
12633        fn new(_: &mut Window, cx: &mut Context<Self>) -> Self {
12634            Self(cx.focus_handle())
12635        }
12636    }
12637
12638    impl EventEmitter<DismissEvent> for TestModal {}
12639
12640    impl Focusable for TestModal {
12641        fn focus_handle(&self, _cx: &App) -> FocusHandle {
12642            self.0.clone()
12643        }
12644    }
12645
12646    impl ModalView for TestModal {}
12647
12648    impl Render for TestModal {
12649        fn render(
12650            &mut self,
12651            _window: &mut Window,
12652            _cx: &mut Context<TestModal>,
12653        ) -> impl IntoElement {
12654            div().track_focus(&self.0)
12655        }
12656    }
12657
12658    #[gpui::test]
12659    async fn test_panels(cx: &mut gpui::TestAppContext) {
12660        init_test(cx);
12661        let fs = FakeFs::new(cx.executor());
12662
12663        let project = Project::test(fs, [], cx).await;
12664        let (multi_workspace, cx) =
12665            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
12666        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
12667
12668        let (panel_1, panel_2) = workspace.update_in(cx, |workspace, window, cx| {
12669            let panel_1 = cx.new(|cx| TestPanel::new(DockPosition::Left, 100, cx));
12670            workspace.add_panel(panel_1.clone(), window, cx);
12671            workspace.toggle_dock(DockPosition::Left, window, cx);
12672            let panel_2 = cx.new(|cx| TestPanel::new(DockPosition::Right, 101, cx));
12673            workspace.add_panel(panel_2.clone(), window, cx);
12674            workspace.toggle_dock(DockPosition::Right, window, cx);
12675
12676            let left_dock = workspace.left_dock();
12677            assert_eq!(
12678                left_dock.read(cx).visible_panel().unwrap().panel_id(),
12679                panel_1.panel_id()
12680            );
12681            assert_eq!(
12682                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
12683                px(300.)
12684            );
12685
12686            workspace.resize_left_dock(px(1337.), window, cx);
12687            assert_eq!(
12688                workspace
12689                    .right_dock()
12690                    .read(cx)
12691                    .visible_panel()
12692                    .unwrap()
12693                    .panel_id(),
12694                panel_2.panel_id(),
12695            );
12696
12697            (panel_1, panel_2)
12698        });
12699
12700        // Move panel_1 to the right
12701        panel_1.update_in(cx, |panel_1, window, cx| {
12702            panel_1.set_position(DockPosition::Right, window, cx)
12703        });
12704
12705        workspace.update_in(cx, |workspace, window, cx| {
12706            // Since panel_1 was visible on the left, it should now be visible now that it's been moved to the right.
12707            // Since it was the only panel on the left, the left dock should now be closed.
12708            assert!(!workspace.left_dock().read(cx).is_open());
12709            assert!(workspace.left_dock().read(cx).visible_panel().is_none());
12710            let right_dock = workspace.right_dock();
12711            assert_eq!(
12712                right_dock.read(cx).visible_panel().unwrap().panel_id(),
12713                panel_1.panel_id()
12714            );
12715            assert_eq!(
12716                right_dock.read(cx).active_panel_size(window, cx).unwrap(),
12717                px(1337.)
12718            );
12719
12720            // Now we move panel_2 to the left
12721            panel_2.set_position(DockPosition::Left, window, cx);
12722        });
12723
12724        workspace.update(cx, |workspace, cx| {
12725            // Since panel_2 was not visible on the right, we don't open the left dock.
12726            assert!(!workspace.left_dock().read(cx).is_open());
12727            // And the right dock is unaffected in its displaying of panel_1
12728            assert!(workspace.right_dock().read(cx).is_open());
12729            assert_eq!(
12730                workspace
12731                    .right_dock()
12732                    .read(cx)
12733                    .visible_panel()
12734                    .unwrap()
12735                    .panel_id(),
12736                panel_1.panel_id(),
12737            );
12738        });
12739
12740        // Move panel_1 back to the left
12741        panel_1.update_in(cx, |panel_1, window, cx| {
12742            panel_1.set_position(DockPosition::Left, window, cx)
12743        });
12744
12745        workspace.update_in(cx, |workspace, window, cx| {
12746            // Since panel_1 was visible on the right, we open the left dock and make panel_1 active.
12747            let left_dock = workspace.left_dock();
12748            assert!(left_dock.read(cx).is_open());
12749            assert_eq!(
12750                left_dock.read(cx).visible_panel().unwrap().panel_id(),
12751                panel_1.panel_id()
12752            );
12753            assert_eq!(
12754                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
12755                px(1337.)
12756            );
12757            // And the right dock should be closed as it no longer has any panels.
12758            assert!(!workspace.right_dock().read(cx).is_open());
12759
12760            // Now we move panel_1 to the bottom
12761            panel_1.set_position(DockPosition::Bottom, window, cx);
12762        });
12763
12764        workspace.update_in(cx, |workspace, window, cx| {
12765            // Since panel_1 was visible on the left, we close the left dock.
12766            assert!(!workspace.left_dock().read(cx).is_open());
12767            // The bottom dock is sized based on the panel's default size,
12768            // since the panel orientation changed from vertical to horizontal.
12769            let bottom_dock = workspace.bottom_dock();
12770            assert_eq!(
12771                bottom_dock.read(cx).active_panel_size(window, cx).unwrap(),
12772                px(300.),
12773            );
12774            // Close bottom dock and move panel_1 back to the left.
12775            bottom_dock.update(cx, |bottom_dock, cx| {
12776                bottom_dock.set_open(false, window, cx)
12777            });
12778            panel_1.set_position(DockPosition::Left, window, cx);
12779        });
12780
12781        // Emit activated event on panel 1
12782        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Activate));
12783
12784        // Now the left dock is open and panel_1 is active and focused.
12785        workspace.update_in(cx, |workspace, window, cx| {
12786            let left_dock = workspace.left_dock();
12787            assert!(left_dock.read(cx).is_open());
12788            assert_eq!(
12789                left_dock.read(cx).visible_panel().unwrap().panel_id(),
12790                panel_1.panel_id(),
12791            );
12792            assert!(panel_1.focus_handle(cx).is_focused(window));
12793        });
12794
12795        // Emit closed event on panel 2, which is not active
12796        panel_2.update(cx, |_, cx| cx.emit(PanelEvent::Close));
12797
12798        // Wo don't close the left dock, because panel_2 wasn't the active panel
12799        workspace.update(cx, |workspace, cx| {
12800            let left_dock = workspace.left_dock();
12801            assert!(left_dock.read(cx).is_open());
12802            assert_eq!(
12803                left_dock.read(cx).visible_panel().unwrap().panel_id(),
12804                panel_1.panel_id(),
12805            );
12806        });
12807
12808        // Emitting a ZoomIn event shows the panel as zoomed.
12809        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomIn));
12810        workspace.read_with(cx, |workspace, _| {
12811            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
12812            assert_eq!(workspace.zoomed_position, Some(DockPosition::Left));
12813        });
12814
12815        // Move panel to another dock while it is zoomed
12816        panel_1.update_in(cx, |panel, window, cx| {
12817            panel.set_position(DockPosition::Right, window, cx)
12818        });
12819        workspace.read_with(cx, |workspace, _| {
12820            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
12821
12822            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
12823        });
12824
12825        // This is a helper for getting a:
12826        // - valid focus on an element,
12827        // - that isn't a part of the panes and panels system of the Workspace,
12828        // - and doesn't trigger the 'on_focus_lost' API.
12829        let focus_other_view = {
12830            let workspace = workspace.clone();
12831            move |cx: &mut VisualTestContext| {
12832                workspace.update_in(cx, |workspace, window, cx| {
12833                    if workspace.active_modal::<TestModal>(cx).is_some() {
12834                        workspace.toggle_modal(window, cx, TestModal::new);
12835                        workspace.toggle_modal(window, cx, TestModal::new);
12836                    } else {
12837                        workspace.toggle_modal(window, cx, TestModal::new);
12838                    }
12839                })
12840            }
12841        };
12842
12843        // If focus is transferred to another view that's not a panel or another pane, we still show
12844        // the panel as zoomed.
12845        focus_other_view(cx);
12846        workspace.read_with(cx, |workspace, _| {
12847            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
12848            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
12849        });
12850
12851        // If focus is transferred elsewhere in the workspace, the panel is no longer zoomed.
12852        workspace.update_in(cx, |_workspace, window, cx| {
12853            cx.focus_self(window);
12854        });
12855        workspace.read_with(cx, |workspace, _| {
12856            assert_eq!(workspace.zoomed, None);
12857            assert_eq!(workspace.zoomed_position, None);
12858        });
12859
12860        // If focus is transferred again to another view that's not a panel or a pane, we won't
12861        // show the panel as zoomed because it wasn't zoomed before.
12862        focus_other_view(cx);
12863        workspace.read_with(cx, |workspace, _| {
12864            assert_eq!(workspace.zoomed, None);
12865            assert_eq!(workspace.zoomed_position, None);
12866        });
12867
12868        // When the panel is activated, it is zoomed again.
12869        cx.dispatch_action(ToggleRightDock);
12870        workspace.read_with(cx, |workspace, _| {
12871            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
12872            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
12873        });
12874
12875        // Emitting a ZoomOut event unzooms the panel.
12876        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomOut));
12877        workspace.read_with(cx, |workspace, _| {
12878            assert_eq!(workspace.zoomed, None);
12879            assert_eq!(workspace.zoomed_position, None);
12880        });
12881
12882        // Emit closed event on panel 1, which is active
12883        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Close));
12884
12885        // Now the left dock is closed, because panel_1 was the active panel
12886        workspace.update(cx, |workspace, cx| {
12887            let right_dock = workspace.right_dock();
12888            assert!(!right_dock.read(cx).is_open());
12889        });
12890    }
12891
12892    #[gpui::test]
12893    async fn test_no_save_prompt_when_multi_buffer_dirty_items_closed(cx: &mut TestAppContext) {
12894        init_test(cx);
12895
12896        let fs = FakeFs::new(cx.background_executor.clone());
12897        let project = Project::test(fs, [], cx).await;
12898        let (workspace, cx) =
12899            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
12900        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
12901
12902        let dirty_regular_buffer = cx.new(|cx| {
12903            TestItem::new(cx)
12904                .with_dirty(true)
12905                .with_label("1.txt")
12906                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
12907        });
12908        let dirty_regular_buffer_2 = cx.new(|cx| {
12909            TestItem::new(cx)
12910                .with_dirty(true)
12911                .with_label("2.txt")
12912                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
12913        });
12914        let dirty_multi_buffer_with_both = cx.new(|cx| {
12915            TestItem::new(cx)
12916                .with_dirty(true)
12917                .with_buffer_kind(ItemBufferKind::Multibuffer)
12918                .with_label("Fake Project Search")
12919                .with_project_items(&[
12920                    dirty_regular_buffer.read(cx).project_items[0].clone(),
12921                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
12922                ])
12923        });
12924        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
12925        workspace.update_in(cx, |workspace, window, cx| {
12926            workspace.add_item(
12927                pane.clone(),
12928                Box::new(dirty_regular_buffer.clone()),
12929                None,
12930                false,
12931                false,
12932                window,
12933                cx,
12934            );
12935            workspace.add_item(
12936                pane.clone(),
12937                Box::new(dirty_regular_buffer_2.clone()),
12938                None,
12939                false,
12940                false,
12941                window,
12942                cx,
12943            );
12944            workspace.add_item(
12945                pane.clone(),
12946                Box::new(dirty_multi_buffer_with_both.clone()),
12947                None,
12948                false,
12949                false,
12950                window,
12951                cx,
12952            );
12953        });
12954
12955        pane.update_in(cx, |pane, window, cx| {
12956            pane.activate_item(2, true, true, window, cx);
12957            assert_eq!(
12958                pane.active_item().unwrap().item_id(),
12959                multi_buffer_with_both_files_id,
12960                "Should select the multi buffer in the pane"
12961            );
12962        });
12963        let close_all_but_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
12964            pane.close_other_items(
12965                &CloseOtherItems {
12966                    save_intent: Some(SaveIntent::Save),
12967                    close_pinned: true,
12968                },
12969                None,
12970                window,
12971                cx,
12972            )
12973        });
12974        cx.background_executor.run_until_parked();
12975        assert!(!cx.has_pending_prompt());
12976        close_all_but_multi_buffer_task
12977            .await
12978            .expect("Closing all buffers but the multi buffer failed");
12979        pane.update(cx, |pane, cx| {
12980            assert_eq!(dirty_regular_buffer.read(cx).save_count, 1);
12981            assert_eq!(dirty_multi_buffer_with_both.read(cx).save_count, 0);
12982            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 1);
12983            assert_eq!(pane.items_len(), 1);
12984            assert_eq!(
12985                pane.active_item().unwrap().item_id(),
12986                multi_buffer_with_both_files_id,
12987                "Should have only the multi buffer left in the pane"
12988            );
12989            assert!(
12990                dirty_multi_buffer_with_both.read(cx).is_dirty,
12991                "The multi buffer containing the unsaved buffer should still be dirty"
12992            );
12993        });
12994
12995        dirty_regular_buffer.update(cx, |buffer, cx| {
12996            buffer.project_items[0].update(cx, |pi, _| pi.is_dirty = true)
12997        });
12998
12999        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
13000            pane.close_active_item(
13001                &CloseActiveItem {
13002                    save_intent: Some(SaveIntent::Close),
13003                    close_pinned: false,
13004                },
13005                window,
13006                cx,
13007            )
13008        });
13009        cx.background_executor.run_until_parked();
13010        assert!(
13011            cx.has_pending_prompt(),
13012            "Dirty multi buffer should prompt a save dialog"
13013        );
13014        cx.simulate_prompt_answer("Save");
13015        cx.background_executor.run_until_parked();
13016        close_multi_buffer_task
13017            .await
13018            .expect("Closing the multi buffer failed");
13019        pane.update(cx, |pane, cx| {
13020            assert_eq!(
13021                dirty_multi_buffer_with_both.read(cx).save_count,
13022                1,
13023                "Multi buffer item should get be saved"
13024            );
13025            // Test impl does not save inner items, so we do not assert them
13026            assert_eq!(
13027                pane.items_len(),
13028                0,
13029                "No more items should be left in the pane"
13030            );
13031            assert!(pane.active_item().is_none());
13032        });
13033    }
13034
13035    #[gpui::test]
13036    async fn test_save_prompt_when_dirty_multi_buffer_closed_with_some_of_its_dirty_items_not_present_in_the_pane(
13037        cx: &mut TestAppContext,
13038    ) {
13039        init_test(cx);
13040
13041        let fs = FakeFs::new(cx.background_executor.clone());
13042        let project = Project::test(fs, [], cx).await;
13043        let (workspace, cx) =
13044            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13045        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13046
13047        let dirty_regular_buffer = cx.new(|cx| {
13048            TestItem::new(cx)
13049                .with_dirty(true)
13050                .with_label("1.txt")
13051                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
13052        });
13053        let dirty_regular_buffer_2 = cx.new(|cx| {
13054            TestItem::new(cx)
13055                .with_dirty(true)
13056                .with_label("2.txt")
13057                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
13058        });
13059        let clear_regular_buffer = cx.new(|cx| {
13060            TestItem::new(cx)
13061                .with_label("3.txt")
13062                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
13063        });
13064
13065        let dirty_multi_buffer_with_both = cx.new(|cx| {
13066            TestItem::new(cx)
13067                .with_dirty(true)
13068                .with_buffer_kind(ItemBufferKind::Multibuffer)
13069                .with_label("Fake Project Search")
13070                .with_project_items(&[
13071                    dirty_regular_buffer.read(cx).project_items[0].clone(),
13072                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
13073                    clear_regular_buffer.read(cx).project_items[0].clone(),
13074                ])
13075        });
13076        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
13077        workspace.update_in(cx, |workspace, window, cx| {
13078            workspace.add_item(
13079                pane.clone(),
13080                Box::new(dirty_regular_buffer.clone()),
13081                None,
13082                false,
13083                false,
13084                window,
13085                cx,
13086            );
13087            workspace.add_item(
13088                pane.clone(),
13089                Box::new(dirty_multi_buffer_with_both.clone()),
13090                None,
13091                false,
13092                false,
13093                window,
13094                cx,
13095            );
13096        });
13097
13098        pane.update_in(cx, |pane, window, cx| {
13099            pane.activate_item(1, true, true, window, cx);
13100            assert_eq!(
13101                pane.active_item().unwrap().item_id(),
13102                multi_buffer_with_both_files_id,
13103                "Should select the multi buffer in the pane"
13104            );
13105        });
13106        let _close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
13107            pane.close_active_item(
13108                &CloseActiveItem {
13109                    save_intent: None,
13110                    close_pinned: false,
13111                },
13112                window,
13113                cx,
13114            )
13115        });
13116        cx.background_executor.run_until_parked();
13117        assert!(
13118            cx.has_pending_prompt(),
13119            "With one dirty item from the multi buffer not being in the pane, a save prompt should be shown"
13120        );
13121    }
13122
13123    /// Tests that when `close_on_file_delete` is enabled, files are automatically
13124    /// closed when they are deleted from disk.
13125    #[gpui::test]
13126    async fn test_close_on_disk_deletion_enabled(cx: &mut TestAppContext) {
13127        init_test(cx);
13128
13129        // Enable the close_on_disk_deletion setting
13130        cx.update_global(|store: &mut SettingsStore, cx| {
13131            store.update_user_settings(cx, |settings| {
13132                settings.workspace.close_on_file_delete = Some(true);
13133            });
13134        });
13135
13136        let fs = FakeFs::new(cx.background_executor.clone());
13137        let project = Project::test(fs, [], cx).await;
13138        let (workspace, cx) =
13139            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13140        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13141
13142        // Create a test item that simulates a file
13143        let item = cx.new(|cx| {
13144            TestItem::new(cx)
13145                .with_label("test.txt")
13146                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
13147        });
13148
13149        // Add item to workspace
13150        workspace.update_in(cx, |workspace, window, cx| {
13151            workspace.add_item(
13152                pane.clone(),
13153                Box::new(item.clone()),
13154                None,
13155                false,
13156                false,
13157                window,
13158                cx,
13159            );
13160        });
13161
13162        // Verify the item is in the pane
13163        pane.read_with(cx, |pane, _| {
13164            assert_eq!(pane.items().count(), 1);
13165        });
13166
13167        // Simulate file deletion by setting the item's deleted state
13168        item.update(cx, |item, _| {
13169            item.set_has_deleted_file(true);
13170        });
13171
13172        // Emit UpdateTab event to trigger the close behavior
13173        cx.run_until_parked();
13174        item.update(cx, |_, cx| {
13175            cx.emit(ItemEvent::UpdateTab);
13176        });
13177
13178        // Allow the close operation to complete
13179        cx.run_until_parked();
13180
13181        // Verify the item was automatically closed
13182        pane.read_with(cx, |pane, _| {
13183            assert_eq!(
13184                pane.items().count(),
13185                0,
13186                "Item should be automatically closed when file is deleted"
13187            );
13188        });
13189    }
13190
13191    /// Tests that when `close_on_file_delete` is disabled (default), files remain
13192    /// open with a strikethrough when they are deleted from disk.
13193    #[gpui::test]
13194    async fn test_close_on_disk_deletion_disabled(cx: &mut TestAppContext) {
13195        init_test(cx);
13196
13197        // Ensure close_on_disk_deletion is disabled (default)
13198        cx.update_global(|store: &mut SettingsStore, cx| {
13199            store.update_user_settings(cx, |settings| {
13200                settings.workspace.close_on_file_delete = Some(false);
13201            });
13202        });
13203
13204        let fs = FakeFs::new(cx.background_executor.clone());
13205        let project = Project::test(fs, [], cx).await;
13206        let (workspace, cx) =
13207            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13208        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13209
13210        // Create a test item that simulates a file
13211        let item = cx.new(|cx| {
13212            TestItem::new(cx)
13213                .with_label("test.txt")
13214                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
13215        });
13216
13217        // Add item to workspace
13218        workspace.update_in(cx, |workspace, window, cx| {
13219            workspace.add_item(
13220                pane.clone(),
13221                Box::new(item.clone()),
13222                None,
13223                false,
13224                false,
13225                window,
13226                cx,
13227            );
13228        });
13229
13230        // Verify the item is in the pane
13231        pane.read_with(cx, |pane, _| {
13232            assert_eq!(pane.items().count(), 1);
13233        });
13234
13235        // Simulate file deletion
13236        item.update(cx, |item, _| {
13237            item.set_has_deleted_file(true);
13238        });
13239
13240        // Emit UpdateTab event
13241        cx.run_until_parked();
13242        item.update(cx, |_, cx| {
13243            cx.emit(ItemEvent::UpdateTab);
13244        });
13245
13246        // Allow any potential close operation to complete
13247        cx.run_until_parked();
13248
13249        // Verify the item remains open (with strikethrough)
13250        pane.read_with(cx, |pane, _| {
13251            assert_eq!(
13252                pane.items().count(),
13253                1,
13254                "Item should remain open when close_on_disk_deletion is disabled"
13255            );
13256        });
13257
13258        // Verify the item shows as deleted
13259        item.read_with(cx, |item, _| {
13260            assert!(
13261                item.has_deleted_file,
13262                "Item should be marked as having deleted file"
13263            );
13264        });
13265    }
13266
13267    /// Tests that dirty files are not automatically closed when deleted from disk,
13268    /// even when `close_on_file_delete` is enabled. This ensures users don't lose
13269    /// unsaved changes without being prompted.
13270    #[gpui::test]
13271    async fn test_close_on_disk_deletion_with_dirty_file(cx: &mut TestAppContext) {
13272        init_test(cx);
13273
13274        // Enable the close_on_file_delete setting
13275        cx.update_global(|store: &mut SettingsStore, cx| {
13276            store.update_user_settings(cx, |settings| {
13277                settings.workspace.close_on_file_delete = Some(true);
13278            });
13279        });
13280
13281        let fs = FakeFs::new(cx.background_executor.clone());
13282        let project = Project::test(fs, [], cx).await;
13283        let (workspace, cx) =
13284            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13285        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13286
13287        // Create a dirty test item
13288        let item = cx.new(|cx| {
13289            TestItem::new(cx)
13290                .with_dirty(true)
13291                .with_label("test.txt")
13292                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
13293        });
13294
13295        // Add item to workspace
13296        workspace.update_in(cx, |workspace, window, cx| {
13297            workspace.add_item(
13298                pane.clone(),
13299                Box::new(item.clone()),
13300                None,
13301                false,
13302                false,
13303                window,
13304                cx,
13305            );
13306        });
13307
13308        // Simulate file deletion
13309        item.update(cx, |item, _| {
13310            item.set_has_deleted_file(true);
13311        });
13312
13313        // Emit UpdateTab event to trigger the close behavior
13314        cx.run_until_parked();
13315        item.update(cx, |_, cx| {
13316            cx.emit(ItemEvent::UpdateTab);
13317        });
13318
13319        // Allow any potential close operation to complete
13320        cx.run_until_parked();
13321
13322        // Verify the item remains open (dirty files are not auto-closed)
13323        pane.read_with(cx, |pane, _| {
13324            assert_eq!(
13325                pane.items().count(),
13326                1,
13327                "Dirty items should not be automatically closed even when file is deleted"
13328            );
13329        });
13330
13331        // Verify the item is marked as deleted and still dirty
13332        item.read_with(cx, |item, _| {
13333            assert!(
13334                item.has_deleted_file,
13335                "Item should be marked as having deleted file"
13336            );
13337            assert!(item.is_dirty, "Item should still be dirty");
13338        });
13339    }
13340
13341    /// Tests that navigation history is cleaned up when files are auto-closed
13342    /// due to deletion from disk.
13343    #[gpui::test]
13344    async fn test_close_on_disk_deletion_cleans_navigation_history(cx: &mut TestAppContext) {
13345        init_test(cx);
13346
13347        // Enable the close_on_file_delete setting
13348        cx.update_global(|store: &mut SettingsStore, cx| {
13349            store.update_user_settings(cx, |settings| {
13350                settings.workspace.close_on_file_delete = Some(true);
13351            });
13352        });
13353
13354        let fs = FakeFs::new(cx.background_executor.clone());
13355        let project = Project::test(fs, [], cx).await;
13356        let (workspace, cx) =
13357            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13358        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13359
13360        // Create test items
13361        let item1 = cx.new(|cx| {
13362            TestItem::new(cx)
13363                .with_label("test1.txt")
13364                .with_project_items(&[TestProjectItem::new(1, "test1.txt", cx)])
13365        });
13366        let item1_id = item1.item_id();
13367
13368        let item2 = cx.new(|cx| {
13369            TestItem::new(cx)
13370                .with_label("test2.txt")
13371                .with_project_items(&[TestProjectItem::new(2, "test2.txt", cx)])
13372        });
13373
13374        // Add items to workspace
13375        workspace.update_in(cx, |workspace, window, cx| {
13376            workspace.add_item(
13377                pane.clone(),
13378                Box::new(item1.clone()),
13379                None,
13380                false,
13381                false,
13382                window,
13383                cx,
13384            );
13385            workspace.add_item(
13386                pane.clone(),
13387                Box::new(item2.clone()),
13388                None,
13389                false,
13390                false,
13391                window,
13392                cx,
13393            );
13394        });
13395
13396        // Activate item1 to ensure it gets navigation entries
13397        pane.update_in(cx, |pane, window, cx| {
13398            pane.activate_item(0, true, true, window, cx);
13399        });
13400
13401        // Switch to item2 and back to create navigation history
13402        pane.update_in(cx, |pane, window, cx| {
13403            pane.activate_item(1, true, true, window, cx);
13404        });
13405        cx.run_until_parked();
13406
13407        pane.update_in(cx, |pane, window, cx| {
13408            pane.activate_item(0, true, true, window, cx);
13409        });
13410        cx.run_until_parked();
13411
13412        // Simulate file deletion for item1
13413        item1.update(cx, |item, _| {
13414            item.set_has_deleted_file(true);
13415        });
13416
13417        // Emit UpdateTab event to trigger the close behavior
13418        item1.update(cx, |_, cx| {
13419            cx.emit(ItemEvent::UpdateTab);
13420        });
13421        cx.run_until_parked();
13422
13423        // Verify item1 was closed
13424        pane.read_with(cx, |pane, _| {
13425            assert_eq!(
13426                pane.items().count(),
13427                1,
13428                "Should have 1 item remaining after auto-close"
13429            );
13430        });
13431
13432        // Check navigation history after close
13433        let has_item = pane.read_with(cx, |pane, cx| {
13434            let mut has_item = false;
13435            pane.nav_history().for_each_entry(cx, &mut |entry, _| {
13436                if entry.item.id() == item1_id {
13437                    has_item = true;
13438                }
13439            });
13440            has_item
13441        });
13442
13443        assert!(
13444            !has_item,
13445            "Navigation history should not contain closed item entries"
13446        );
13447    }
13448
13449    #[gpui::test]
13450    async fn test_no_save_prompt_when_dirty_multi_buffer_closed_with_all_of_its_dirty_items_present_in_the_pane(
13451        cx: &mut TestAppContext,
13452    ) {
13453        init_test(cx);
13454
13455        let fs = FakeFs::new(cx.background_executor.clone());
13456        let project = Project::test(fs, [], cx).await;
13457        let (workspace, cx) =
13458            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13459        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13460
13461        let dirty_regular_buffer = cx.new(|cx| {
13462            TestItem::new(cx)
13463                .with_dirty(true)
13464                .with_label("1.txt")
13465                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
13466        });
13467        let dirty_regular_buffer_2 = cx.new(|cx| {
13468            TestItem::new(cx)
13469                .with_dirty(true)
13470                .with_label("2.txt")
13471                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
13472        });
13473        let clear_regular_buffer = cx.new(|cx| {
13474            TestItem::new(cx)
13475                .with_label("3.txt")
13476                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
13477        });
13478
13479        let dirty_multi_buffer = cx.new(|cx| {
13480            TestItem::new(cx)
13481                .with_dirty(true)
13482                .with_buffer_kind(ItemBufferKind::Multibuffer)
13483                .with_label("Fake Project Search")
13484                .with_project_items(&[
13485                    dirty_regular_buffer.read(cx).project_items[0].clone(),
13486                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
13487                    clear_regular_buffer.read(cx).project_items[0].clone(),
13488                ])
13489        });
13490        workspace.update_in(cx, |workspace, window, cx| {
13491            workspace.add_item(
13492                pane.clone(),
13493                Box::new(dirty_regular_buffer.clone()),
13494                None,
13495                false,
13496                false,
13497                window,
13498                cx,
13499            );
13500            workspace.add_item(
13501                pane.clone(),
13502                Box::new(dirty_regular_buffer_2.clone()),
13503                None,
13504                false,
13505                false,
13506                window,
13507                cx,
13508            );
13509            workspace.add_item(
13510                pane.clone(),
13511                Box::new(dirty_multi_buffer.clone()),
13512                None,
13513                false,
13514                false,
13515                window,
13516                cx,
13517            );
13518        });
13519
13520        pane.update_in(cx, |pane, window, cx| {
13521            pane.activate_item(2, true, true, window, cx);
13522            assert_eq!(
13523                pane.active_item().unwrap().item_id(),
13524                dirty_multi_buffer.item_id(),
13525                "Should select the multi buffer in the pane"
13526            );
13527        });
13528        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
13529            pane.close_active_item(
13530                &CloseActiveItem {
13531                    save_intent: None,
13532                    close_pinned: false,
13533                },
13534                window,
13535                cx,
13536            )
13537        });
13538        cx.background_executor.run_until_parked();
13539        assert!(
13540            !cx.has_pending_prompt(),
13541            "All dirty items from the multi buffer are in the pane still, no save prompts should be shown"
13542        );
13543        close_multi_buffer_task
13544            .await
13545            .expect("Closing multi buffer failed");
13546        pane.update(cx, |pane, cx| {
13547            assert_eq!(dirty_regular_buffer.read(cx).save_count, 0);
13548            assert_eq!(dirty_multi_buffer.read(cx).save_count, 0);
13549            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 0);
13550            assert_eq!(
13551                pane.items()
13552                    .map(|item| item.item_id())
13553                    .sorted()
13554                    .collect::<Vec<_>>(),
13555                vec![
13556                    dirty_regular_buffer.item_id(),
13557                    dirty_regular_buffer_2.item_id(),
13558                ],
13559                "Should have no multi buffer left in the pane"
13560            );
13561            assert!(dirty_regular_buffer.read(cx).is_dirty);
13562            assert!(dirty_regular_buffer_2.read(cx).is_dirty);
13563        });
13564    }
13565
13566    #[gpui::test]
13567    async fn test_move_focused_panel_to_next_position(cx: &mut gpui::TestAppContext) {
13568        init_test(cx);
13569        let fs = FakeFs::new(cx.executor());
13570        let project = Project::test(fs, [], cx).await;
13571        let (multi_workspace, cx) =
13572            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
13573        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
13574
13575        // Add a new panel to the right dock, opening the dock and setting the
13576        // focus to the new panel.
13577        let panel = workspace.update_in(cx, |workspace, window, cx| {
13578            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
13579            workspace.add_panel(panel.clone(), window, cx);
13580
13581            workspace
13582                .right_dock()
13583                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
13584
13585            workspace.toggle_panel_focus::<TestPanel>(window, cx);
13586
13587            panel
13588        });
13589
13590        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
13591        // panel to the next valid position which, in this case, is the left
13592        // dock.
13593        cx.dispatch_action(MoveFocusedPanelToNextPosition);
13594        workspace.update(cx, |workspace, cx| {
13595            assert!(workspace.left_dock().read(cx).is_open());
13596            assert_eq!(panel.read(cx).position, DockPosition::Left);
13597        });
13598
13599        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
13600        // panel to the next valid position which, in this case, is the bottom
13601        // dock.
13602        cx.dispatch_action(MoveFocusedPanelToNextPosition);
13603        workspace.update(cx, |workspace, cx| {
13604            assert!(workspace.bottom_dock().read(cx).is_open());
13605            assert_eq!(panel.read(cx).position, DockPosition::Bottom);
13606        });
13607
13608        // Dispatch the `MoveFocusedPanelToNextPosition` action again, this time
13609        // around moving the panel to its initial position, the right dock.
13610        cx.dispatch_action(MoveFocusedPanelToNextPosition);
13611        workspace.update(cx, |workspace, cx| {
13612            assert!(workspace.right_dock().read(cx).is_open());
13613            assert_eq!(panel.read(cx).position, DockPosition::Right);
13614        });
13615
13616        // Remove focus from the panel, ensuring that, if the panel is not
13617        // focused, the `MoveFocusedPanelToNextPosition` action does not update
13618        // the panel's position, so the panel is still in the right dock.
13619        workspace.update_in(cx, |workspace, window, cx| {
13620            workspace.toggle_panel_focus::<TestPanel>(window, cx);
13621        });
13622
13623        cx.dispatch_action(MoveFocusedPanelToNextPosition);
13624        workspace.update(cx, |workspace, cx| {
13625            assert!(workspace.right_dock().read(cx).is_open());
13626            assert_eq!(panel.read(cx).position, DockPosition::Right);
13627        });
13628    }
13629
13630    #[gpui::test]
13631    async fn test_moving_items_create_panes(cx: &mut TestAppContext) {
13632        init_test(cx);
13633
13634        let fs = FakeFs::new(cx.executor());
13635        let project = Project::test(fs, [], cx).await;
13636        let (workspace, cx) =
13637            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
13638
13639        let item_1 = cx.new(|cx| {
13640            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
13641        });
13642        workspace.update_in(cx, |workspace, window, cx| {
13643            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
13644            workspace.move_item_to_pane_in_direction(
13645                &MoveItemToPaneInDirection {
13646                    direction: SplitDirection::Right,
13647                    focus: true,
13648                    clone: false,
13649                },
13650                window,
13651                cx,
13652            );
13653            workspace.move_item_to_pane_at_index(
13654                &MoveItemToPane {
13655                    destination: 3,
13656                    focus: true,
13657                    clone: false,
13658                },
13659                window,
13660                cx,
13661            );
13662
13663            assert_eq!(workspace.panes.len(), 1, "No new panes were created");
13664            assert_eq!(
13665                pane_items_paths(&workspace.active_pane, cx),
13666                vec!["first.txt".to_string()],
13667                "Single item was not moved anywhere"
13668            );
13669        });
13670
13671        let item_2 = cx.new(|cx| {
13672            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "second.txt", cx)])
13673        });
13674        workspace.update_in(cx, |workspace, window, cx| {
13675            workspace.add_item_to_active_pane(Box::new(item_2), None, true, window, cx);
13676            assert_eq!(
13677                pane_items_paths(&workspace.panes[0], cx),
13678                vec!["first.txt".to_string(), "second.txt".to_string()],
13679            );
13680            workspace.move_item_to_pane_in_direction(
13681                &MoveItemToPaneInDirection {
13682                    direction: SplitDirection::Right,
13683                    focus: true,
13684                    clone: false,
13685                },
13686                window,
13687                cx,
13688            );
13689
13690            assert_eq!(workspace.panes.len(), 2, "A new pane should be created");
13691            assert_eq!(
13692                pane_items_paths(&workspace.panes[0], cx),
13693                vec!["first.txt".to_string()],
13694                "After moving, one item should be left in the original pane"
13695            );
13696            assert_eq!(
13697                pane_items_paths(&workspace.panes[1], cx),
13698                vec!["second.txt".to_string()],
13699                "New item should have been moved to the new pane"
13700            );
13701        });
13702
13703        let item_3 = cx.new(|cx| {
13704            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "third.txt", cx)])
13705        });
13706        workspace.update_in(cx, |workspace, window, cx| {
13707            let original_pane = workspace.panes[0].clone();
13708            workspace.set_active_pane(&original_pane, window, cx);
13709            workspace.add_item_to_active_pane(Box::new(item_3), None, true, window, cx);
13710            assert_eq!(workspace.panes.len(), 2, "No new panes were created");
13711            assert_eq!(
13712                pane_items_paths(&workspace.active_pane, cx),
13713                vec!["first.txt".to_string(), "third.txt".to_string()],
13714                "New pane should be ready to move one item out"
13715            );
13716
13717            workspace.move_item_to_pane_at_index(
13718                &MoveItemToPane {
13719                    destination: 3,
13720                    focus: true,
13721                    clone: false,
13722                },
13723                window,
13724                cx,
13725            );
13726            assert_eq!(workspace.panes.len(), 3, "A new pane should be created");
13727            assert_eq!(
13728                pane_items_paths(&workspace.active_pane, cx),
13729                vec!["first.txt".to_string()],
13730                "After moving, one item should be left in the original pane"
13731            );
13732            assert_eq!(
13733                pane_items_paths(&workspace.panes[1], cx),
13734                vec!["second.txt".to_string()],
13735                "Previously created pane should be unchanged"
13736            );
13737            assert_eq!(
13738                pane_items_paths(&workspace.panes[2], cx),
13739                vec!["third.txt".to_string()],
13740                "New item should have been moved to the new pane"
13741            );
13742        });
13743    }
13744
13745    #[gpui::test]
13746    async fn test_moving_items_can_clone_panes(cx: &mut TestAppContext) {
13747        init_test(cx);
13748
13749        let fs = FakeFs::new(cx.executor());
13750        let project = Project::test(fs, [], cx).await;
13751        let (workspace, cx) =
13752            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
13753
13754        let item_1 = cx.new(|cx| {
13755            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
13756        });
13757        workspace.update_in(cx, |workspace, window, cx| {
13758            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
13759            workspace.move_item_to_pane_in_direction(
13760                &MoveItemToPaneInDirection {
13761                    direction: SplitDirection::Right,
13762                    focus: true,
13763                    clone: true,
13764                },
13765                window,
13766                cx,
13767            );
13768        });
13769        cx.run_until_parked();
13770        workspace.update_in(cx, |workspace, window, cx| {
13771            workspace.move_item_to_pane_at_index(
13772                &MoveItemToPane {
13773                    destination: 3,
13774                    focus: true,
13775                    clone: true,
13776                },
13777                window,
13778                cx,
13779            );
13780        });
13781        cx.run_until_parked();
13782
13783        workspace.update(cx, |workspace, cx| {
13784            assert_eq!(workspace.panes.len(), 3, "Two new panes were created");
13785            for pane in workspace.panes() {
13786                assert_eq!(
13787                    pane_items_paths(pane, cx),
13788                    vec!["first.txt".to_string()],
13789                    "Single item exists in all panes"
13790                );
13791            }
13792        });
13793
13794        // verify that the active pane has been updated after waiting for the
13795        // pane focus event to fire and resolve
13796        workspace.read_with(cx, |workspace, _app| {
13797            assert_eq!(
13798                workspace.active_pane(),
13799                &workspace.panes[2],
13800                "The third pane should be the active one: {:?}",
13801                workspace.panes
13802            );
13803        })
13804    }
13805
13806    #[gpui::test]
13807    async fn test_close_item_in_all_panes(cx: &mut TestAppContext) {
13808        init_test(cx);
13809
13810        let fs = FakeFs::new(cx.executor());
13811        fs.insert_tree("/root", json!({ "test.txt": "" })).await;
13812
13813        let project = Project::test(fs, ["root".as_ref()], cx).await;
13814        let (workspace, cx) =
13815            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
13816
13817        let pane_a = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13818        // Add item to pane A with project path
13819        let item_a = cx.new(|cx| {
13820            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
13821        });
13822        workspace.update_in(cx, |workspace, window, cx| {
13823            workspace.add_item_to_active_pane(Box::new(item_a.clone()), None, true, window, cx)
13824        });
13825
13826        // Split to create pane B
13827        let pane_b = workspace.update_in(cx, |workspace, window, cx| {
13828            workspace.split_pane(pane_a.clone(), SplitDirection::Right, window, cx)
13829        });
13830
13831        // Add item with SAME project path to pane B, and pin it
13832        let item_b = cx.new(|cx| {
13833            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
13834        });
13835        pane_b.update_in(cx, |pane, window, cx| {
13836            pane.add_item(Box::new(item_b.clone()), true, true, None, window, cx);
13837            pane.set_pinned_count(1);
13838        });
13839
13840        assert_eq!(pane_a.read_with(cx, |pane, _| pane.items_len()), 1);
13841        assert_eq!(pane_b.read_with(cx, |pane, _| pane.items_len()), 1);
13842
13843        // close_pinned: false should only close the unpinned copy
13844        workspace.update_in(cx, |workspace, window, cx| {
13845            workspace.close_item_in_all_panes(
13846                &CloseItemInAllPanes {
13847                    save_intent: Some(SaveIntent::Close),
13848                    close_pinned: false,
13849                },
13850                window,
13851                cx,
13852            )
13853        });
13854        cx.executor().run_until_parked();
13855
13856        let item_count_a = pane_a.read_with(cx, |pane, _| pane.items_len());
13857        let item_count_b = pane_b.read_with(cx, |pane, _| pane.items_len());
13858        assert_eq!(item_count_a, 0, "Unpinned item in pane A should be closed");
13859        assert_eq!(item_count_b, 1, "Pinned item in pane B should remain");
13860
13861        // Split again, seeing as closing the previous item also closed its
13862        // pane, so only pane remains, which does not allow us to properly test
13863        // that both items close when `close_pinned: true`.
13864        let pane_c = workspace.update_in(cx, |workspace, window, cx| {
13865            workspace.split_pane(pane_b.clone(), SplitDirection::Right, window, cx)
13866        });
13867
13868        // Add an item with the same project path to pane C so that
13869        // close_item_in_all_panes can determine what to close across all panes
13870        // (it reads the active item from the active pane, and split_pane
13871        // creates an empty pane).
13872        let item_c = cx.new(|cx| {
13873            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
13874        });
13875        pane_c.update_in(cx, |pane, window, cx| {
13876            pane.add_item(Box::new(item_c.clone()), true, true, None, window, cx);
13877        });
13878
13879        // close_pinned: true should close the pinned copy too
13880        workspace.update_in(cx, |workspace, window, cx| {
13881            let panes_count = workspace.panes().len();
13882            assert_eq!(panes_count, 2, "Workspace should have two panes (B and C)");
13883
13884            workspace.close_item_in_all_panes(
13885                &CloseItemInAllPanes {
13886                    save_intent: Some(SaveIntent::Close),
13887                    close_pinned: true,
13888                },
13889                window,
13890                cx,
13891            )
13892        });
13893        cx.executor().run_until_parked();
13894
13895        let item_count_b = pane_b.read_with(cx, |pane, _| pane.items_len());
13896        let item_count_c = pane_c.read_with(cx, |pane, _| pane.items_len());
13897        assert_eq!(item_count_b, 0, "Pinned item in pane B should be closed");
13898        assert_eq!(item_count_c, 0, "Unpinned item in pane C should be closed");
13899    }
13900
13901    mod register_project_item_tests {
13902
13903        use super::*;
13904
13905        // View
13906        struct TestPngItemView {
13907            focus_handle: FocusHandle,
13908        }
13909        // Model
13910        struct TestPngItem {}
13911
13912        impl project::ProjectItem for TestPngItem {
13913            fn try_open(
13914                _project: &Entity<Project>,
13915                path: &ProjectPath,
13916                cx: &mut App,
13917            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
13918                if path.path.extension().unwrap() == "png" {
13919                    Some(cx.spawn(async move |cx| Ok(cx.new(|_| TestPngItem {}))))
13920                } else {
13921                    None
13922                }
13923            }
13924
13925            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
13926                None
13927            }
13928
13929            fn project_path(&self, _: &App) -> Option<ProjectPath> {
13930                None
13931            }
13932
13933            fn is_dirty(&self) -> bool {
13934                false
13935            }
13936        }
13937
13938        impl Item for TestPngItemView {
13939            type Event = ();
13940            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
13941                "".into()
13942            }
13943        }
13944        impl EventEmitter<()> for TestPngItemView {}
13945        impl Focusable for TestPngItemView {
13946            fn focus_handle(&self, _cx: &App) -> FocusHandle {
13947                self.focus_handle.clone()
13948            }
13949        }
13950
13951        impl Render for TestPngItemView {
13952            fn render(
13953                &mut self,
13954                _window: &mut Window,
13955                _cx: &mut Context<Self>,
13956            ) -> impl IntoElement {
13957                Empty
13958            }
13959        }
13960
13961        impl ProjectItem for TestPngItemView {
13962            type Item = TestPngItem;
13963
13964            fn for_project_item(
13965                _project: Entity<Project>,
13966                _pane: Option<&Pane>,
13967                _item: Entity<Self::Item>,
13968                _: &mut Window,
13969                cx: &mut Context<Self>,
13970            ) -> Self
13971            where
13972                Self: Sized,
13973            {
13974                Self {
13975                    focus_handle: cx.focus_handle(),
13976                }
13977            }
13978        }
13979
13980        // View
13981        struct TestIpynbItemView {
13982            focus_handle: FocusHandle,
13983        }
13984        // Model
13985        struct TestIpynbItem {}
13986
13987        impl project::ProjectItem for TestIpynbItem {
13988            fn try_open(
13989                _project: &Entity<Project>,
13990                path: &ProjectPath,
13991                cx: &mut App,
13992            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
13993                if path.path.extension().unwrap() == "ipynb" {
13994                    Some(cx.spawn(async move |cx| Ok(cx.new(|_| TestIpynbItem {}))))
13995                } else {
13996                    None
13997                }
13998            }
13999
14000            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
14001                None
14002            }
14003
14004            fn project_path(&self, _: &App) -> Option<ProjectPath> {
14005                None
14006            }
14007
14008            fn is_dirty(&self) -> bool {
14009                false
14010            }
14011        }
14012
14013        impl Item for TestIpynbItemView {
14014            type Event = ();
14015            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
14016                "".into()
14017            }
14018        }
14019        impl EventEmitter<()> for TestIpynbItemView {}
14020        impl Focusable for TestIpynbItemView {
14021            fn focus_handle(&self, _cx: &App) -> FocusHandle {
14022                self.focus_handle.clone()
14023            }
14024        }
14025
14026        impl Render for TestIpynbItemView {
14027            fn render(
14028                &mut self,
14029                _window: &mut Window,
14030                _cx: &mut Context<Self>,
14031            ) -> impl IntoElement {
14032                Empty
14033            }
14034        }
14035
14036        impl ProjectItem for TestIpynbItemView {
14037            type Item = TestIpynbItem;
14038
14039            fn for_project_item(
14040                _project: Entity<Project>,
14041                _pane: Option<&Pane>,
14042                _item: Entity<Self::Item>,
14043                _: &mut Window,
14044                cx: &mut Context<Self>,
14045            ) -> Self
14046            where
14047                Self: Sized,
14048            {
14049                Self {
14050                    focus_handle: cx.focus_handle(),
14051                }
14052            }
14053        }
14054
14055        struct TestAlternatePngItemView {
14056            focus_handle: FocusHandle,
14057        }
14058
14059        impl Item for TestAlternatePngItemView {
14060            type Event = ();
14061            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
14062                "".into()
14063            }
14064        }
14065
14066        impl EventEmitter<()> for TestAlternatePngItemView {}
14067        impl Focusable for TestAlternatePngItemView {
14068            fn focus_handle(&self, _cx: &App) -> FocusHandle {
14069                self.focus_handle.clone()
14070            }
14071        }
14072
14073        impl Render for TestAlternatePngItemView {
14074            fn render(
14075                &mut self,
14076                _window: &mut Window,
14077                _cx: &mut Context<Self>,
14078            ) -> impl IntoElement {
14079                Empty
14080            }
14081        }
14082
14083        impl ProjectItem for TestAlternatePngItemView {
14084            type Item = TestPngItem;
14085
14086            fn for_project_item(
14087                _project: Entity<Project>,
14088                _pane: Option<&Pane>,
14089                _item: Entity<Self::Item>,
14090                _: &mut Window,
14091                cx: &mut Context<Self>,
14092            ) -> Self
14093            where
14094                Self: Sized,
14095            {
14096                Self {
14097                    focus_handle: cx.focus_handle(),
14098                }
14099            }
14100        }
14101
14102        #[gpui::test]
14103        async fn test_register_project_item(cx: &mut TestAppContext) {
14104            init_test(cx);
14105
14106            cx.update(|cx| {
14107                register_project_item::<TestPngItemView>(cx);
14108                register_project_item::<TestIpynbItemView>(cx);
14109            });
14110
14111            let fs = FakeFs::new(cx.executor());
14112            fs.insert_tree(
14113                "/root1",
14114                json!({
14115                    "one.png": "BINARYDATAHERE",
14116                    "two.ipynb": "{ totally a notebook }",
14117                    "three.txt": "editing text, sure why not?"
14118                }),
14119            )
14120            .await;
14121
14122            let project = Project::test(fs, ["root1".as_ref()], cx).await;
14123            let (workspace, cx) =
14124                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
14125
14126            let worktree_id = project.update(cx, |project, cx| {
14127                project.worktrees(cx).next().unwrap().read(cx).id()
14128            });
14129
14130            let handle = workspace
14131                .update_in(cx, |workspace, window, cx| {
14132                    let project_path = (worktree_id, rel_path("one.png"));
14133                    workspace.open_path(project_path, None, true, window, cx)
14134                })
14135                .await
14136                .unwrap();
14137
14138            // Now we can check if the handle we got back errored or not
14139            assert_eq!(
14140                handle.to_any_view().entity_type(),
14141                TypeId::of::<TestPngItemView>()
14142            );
14143
14144            let handle = workspace
14145                .update_in(cx, |workspace, window, cx| {
14146                    let project_path = (worktree_id, rel_path("two.ipynb"));
14147                    workspace.open_path(project_path, None, true, window, cx)
14148                })
14149                .await
14150                .unwrap();
14151
14152            assert_eq!(
14153                handle.to_any_view().entity_type(),
14154                TypeId::of::<TestIpynbItemView>()
14155            );
14156
14157            let handle = workspace
14158                .update_in(cx, |workspace, window, cx| {
14159                    let project_path = (worktree_id, rel_path("three.txt"));
14160                    workspace.open_path(project_path, None, true, window, cx)
14161                })
14162                .await;
14163            assert!(handle.is_err());
14164        }
14165
14166        #[gpui::test]
14167        async fn test_register_project_item_two_enter_one_leaves(cx: &mut TestAppContext) {
14168            init_test(cx);
14169
14170            cx.update(|cx| {
14171                register_project_item::<TestPngItemView>(cx);
14172                register_project_item::<TestAlternatePngItemView>(cx);
14173            });
14174
14175            let fs = FakeFs::new(cx.executor());
14176            fs.insert_tree(
14177                "/root1",
14178                json!({
14179                    "one.png": "BINARYDATAHERE",
14180                    "two.ipynb": "{ totally a notebook }",
14181                    "three.txt": "editing text, sure why not?"
14182                }),
14183            )
14184            .await;
14185            let project = Project::test(fs, ["root1".as_ref()], cx).await;
14186            let (workspace, cx) =
14187                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
14188            let worktree_id = project.update(cx, |project, cx| {
14189                project.worktrees(cx).next().unwrap().read(cx).id()
14190            });
14191
14192            let handle = workspace
14193                .update_in(cx, |workspace, window, cx| {
14194                    let project_path = (worktree_id, rel_path("one.png"));
14195                    workspace.open_path(project_path, None, true, window, cx)
14196                })
14197                .await
14198                .unwrap();
14199
14200            // This _must_ be the second item registered
14201            assert_eq!(
14202                handle.to_any_view().entity_type(),
14203                TypeId::of::<TestAlternatePngItemView>()
14204            );
14205
14206            let handle = workspace
14207                .update_in(cx, |workspace, window, cx| {
14208                    let project_path = (worktree_id, rel_path("three.txt"));
14209                    workspace.open_path(project_path, None, true, window, cx)
14210                })
14211                .await;
14212            assert!(handle.is_err());
14213        }
14214    }
14215
14216    #[gpui::test]
14217    async fn test_status_bar_visibility(cx: &mut TestAppContext) {
14218        init_test(cx);
14219
14220        let fs = FakeFs::new(cx.executor());
14221        let project = Project::test(fs, [], cx).await;
14222        let (workspace, _cx) =
14223            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
14224
14225        // Test with status bar shown (default)
14226        workspace.read_with(cx, |workspace, cx| {
14227            let visible = workspace.status_bar_visible(cx);
14228            assert!(visible, "Status bar should be visible by default");
14229        });
14230
14231        // Test with status bar hidden
14232        cx.update_global(|store: &mut SettingsStore, cx| {
14233            store.update_user_settings(cx, |settings| {
14234                settings.status_bar.get_or_insert_default().show = Some(false);
14235            });
14236        });
14237
14238        workspace.read_with(cx, |workspace, cx| {
14239            let visible = workspace.status_bar_visible(cx);
14240            assert!(!visible, "Status bar should be hidden when show is false");
14241        });
14242
14243        // Test with status bar shown explicitly
14244        cx.update_global(|store: &mut SettingsStore, cx| {
14245            store.update_user_settings(cx, |settings| {
14246                settings.status_bar.get_or_insert_default().show = Some(true);
14247            });
14248        });
14249
14250        workspace.read_with(cx, |workspace, cx| {
14251            let visible = workspace.status_bar_visible(cx);
14252            assert!(visible, "Status bar should be visible when show is true");
14253        });
14254    }
14255
14256    #[gpui::test]
14257    async fn test_pane_close_active_item(cx: &mut TestAppContext) {
14258        init_test(cx);
14259
14260        let fs = FakeFs::new(cx.executor());
14261        let project = Project::test(fs, [], cx).await;
14262        let (multi_workspace, cx) =
14263            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
14264        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
14265        let panel = workspace.update_in(cx, |workspace, window, cx| {
14266            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
14267            workspace.add_panel(panel.clone(), window, cx);
14268
14269            workspace
14270                .right_dock()
14271                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
14272
14273            panel
14274        });
14275
14276        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
14277        let item_a = cx.new(TestItem::new);
14278        let item_b = cx.new(TestItem::new);
14279        let item_a_id = item_a.entity_id();
14280        let item_b_id = item_b.entity_id();
14281
14282        pane.update_in(cx, |pane, window, cx| {
14283            pane.add_item(Box::new(item_a.clone()), true, true, None, window, cx);
14284            pane.add_item(Box::new(item_b.clone()), true, true, None, window, cx);
14285        });
14286
14287        pane.read_with(cx, |pane, _| {
14288            assert_eq!(pane.items_len(), 2);
14289            assert_eq!(pane.active_item().unwrap().item_id(), item_b_id);
14290        });
14291
14292        workspace.update_in(cx, |workspace, window, cx| {
14293            workspace.toggle_panel_focus::<TestPanel>(window, cx);
14294        });
14295
14296        workspace.update_in(cx, |_, window, cx| {
14297            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
14298        });
14299
14300        // Assert that the `pane::CloseActiveItem` action is handled at the
14301        // workspace level when one of the dock panels is focused and, in that
14302        // case, the center pane's active item is closed but the focus is not
14303        // moved.
14304        cx.dispatch_action(pane::CloseActiveItem::default());
14305        cx.run_until_parked();
14306
14307        pane.read_with(cx, |pane, _| {
14308            assert_eq!(pane.items_len(), 1);
14309            assert_eq!(pane.active_item().unwrap().item_id(), item_a_id);
14310        });
14311
14312        workspace.update_in(cx, |workspace, window, cx| {
14313            assert!(workspace.right_dock().read(cx).is_open());
14314            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
14315        });
14316    }
14317
14318    #[gpui::test]
14319    async fn test_panel_zoom_preserved_across_workspace_switch(cx: &mut TestAppContext) {
14320        init_test(cx);
14321        let fs = FakeFs::new(cx.executor());
14322
14323        let project_a = Project::test(fs.clone(), [], cx).await;
14324        let project_b = Project::test(fs, [], cx).await;
14325
14326        let multi_workspace_handle =
14327            cx.add_window(|window, cx| MultiWorkspace::test_new(project_a.clone(), window, cx));
14328        cx.run_until_parked();
14329
14330        let workspace_a = multi_workspace_handle
14331            .read_with(cx, |mw, _| mw.workspace().clone())
14332            .unwrap();
14333
14334        let _workspace_b = multi_workspace_handle
14335            .update(cx, |mw, window, cx| {
14336                mw.test_add_workspace(project_b, window, cx)
14337            })
14338            .unwrap();
14339
14340        // Switch to workspace A
14341        multi_workspace_handle
14342            .update(cx, |mw, window, cx| {
14343                mw.activate_index(0, window, cx);
14344            })
14345            .unwrap();
14346
14347        let cx = &mut VisualTestContext::from_window(multi_workspace_handle.into(), cx);
14348
14349        // Add a panel to workspace A's right dock and open the dock
14350        let panel = workspace_a.update_in(cx, |workspace, window, cx| {
14351            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
14352            workspace.add_panel(panel.clone(), window, cx);
14353            workspace
14354                .right_dock()
14355                .update(cx, |dock, cx| dock.set_open(true, window, cx));
14356            panel
14357        });
14358
14359        // Focus the panel through the workspace (matching existing test pattern)
14360        workspace_a.update_in(cx, |workspace, window, cx| {
14361            workspace.toggle_panel_focus::<TestPanel>(window, cx);
14362        });
14363
14364        // Zoom the panel
14365        panel.update_in(cx, |panel, window, cx| {
14366            panel.set_zoomed(true, window, cx);
14367        });
14368
14369        // Verify the panel is zoomed and the dock is open
14370        workspace_a.update_in(cx, |workspace, window, cx| {
14371            assert!(
14372                workspace.right_dock().read(cx).is_open(),
14373                "dock should be open before switch"
14374            );
14375            assert!(
14376                panel.is_zoomed(window, cx),
14377                "panel should be zoomed before switch"
14378            );
14379            assert!(
14380                panel.read(cx).focus_handle(cx).contains_focused(window, cx),
14381                "panel should be focused before switch"
14382            );
14383        });
14384
14385        // Switch to workspace B
14386        multi_workspace_handle
14387            .update(cx, |mw, window, cx| {
14388                mw.activate_index(1, window, cx);
14389            })
14390            .unwrap();
14391        cx.run_until_parked();
14392
14393        // Switch back to workspace A
14394        multi_workspace_handle
14395            .update(cx, |mw, window, cx| {
14396                mw.activate_index(0, window, cx);
14397            })
14398            .unwrap();
14399        cx.run_until_parked();
14400
14401        // Verify the panel is still zoomed and the dock is still open
14402        workspace_a.update_in(cx, |workspace, window, cx| {
14403            assert!(
14404                workspace.right_dock().read(cx).is_open(),
14405                "dock should still be open after switching back"
14406            );
14407            assert!(
14408                panel.is_zoomed(window, cx),
14409                "panel should still be zoomed after switching back"
14410            );
14411        });
14412    }
14413
14414    fn pane_items_paths(pane: &Entity<Pane>, cx: &App) -> Vec<String> {
14415        pane.read(cx)
14416            .items()
14417            .flat_map(|item| {
14418                item.project_paths(cx)
14419                    .into_iter()
14420                    .map(|path| path.path.display(PathStyle::local()).into_owned())
14421            })
14422            .collect()
14423    }
14424
14425    pub fn init_test(cx: &mut TestAppContext) {
14426        cx.update(|cx| {
14427            let settings_store = SettingsStore::test(cx);
14428            cx.set_global(settings_store);
14429            cx.set_global(db::AppDatabase::test_new());
14430            theme::init(theme::LoadThemes::JustBase, cx);
14431        });
14432    }
14433
14434    #[gpui::test]
14435    async fn test_toggle_theme_mode_persists_and_updates_active_theme(cx: &mut TestAppContext) {
14436        use settings::{ThemeName, ThemeSelection};
14437        use theme::SystemAppearance;
14438        use zed_actions::theme::ToggleMode;
14439
14440        init_test(cx);
14441
14442        let fs = FakeFs::new(cx.executor());
14443        let settings_fs: Arc<dyn fs::Fs> = fs.clone();
14444
14445        fs.insert_tree(path!("/root"), json!({ "file.rs": "fn main() {}\n" }))
14446            .await;
14447
14448        // Build a test project and workspace view so the test can invoke
14449        // the workspace action handler the same way the UI would.
14450        let project = Project::test(fs.clone(), [path!("/root").as_ref()], cx).await;
14451        let (workspace, cx) =
14452            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
14453
14454        // Seed the settings file with a plain static light theme so the
14455        // first toggle always starts from a known persisted state.
14456        workspace.update_in(cx, |_workspace, _window, cx| {
14457            *SystemAppearance::global_mut(cx) = SystemAppearance(theme::Appearance::Light);
14458            settings::update_settings_file(settings_fs.clone(), cx, |settings, _cx| {
14459                settings.theme.theme = Some(ThemeSelection::Static(ThemeName("One Light".into())));
14460            });
14461        });
14462        cx.executor().advance_clock(Duration::from_millis(200));
14463        cx.run_until_parked();
14464
14465        // Confirm the initial persisted settings contain the static theme
14466        // we just wrote before any toggling happens.
14467        let settings_text = SettingsStore::load_settings(&settings_fs).await.unwrap();
14468        assert!(settings_text.contains(r#""theme": "One Light""#));
14469
14470        // Toggle once. This should migrate the persisted theme settings
14471        // into light/dark slots and enable system mode.
14472        workspace.update_in(cx, |workspace, window, cx| {
14473            workspace.toggle_theme_mode(&ToggleMode, window, cx);
14474        });
14475        cx.executor().advance_clock(Duration::from_millis(200));
14476        cx.run_until_parked();
14477
14478        // 1. Static -> Dynamic
14479        // this assertion checks theme changed from static to dynamic.
14480        let settings_text = SettingsStore::load_settings(&settings_fs).await.unwrap();
14481        let parsed: serde_json::Value = settings::parse_json_with_comments(&settings_text).unwrap();
14482        assert_eq!(
14483            parsed["theme"],
14484            serde_json::json!({
14485                "mode": "system",
14486                "light": "One Light",
14487                "dark": "One Dark"
14488            })
14489        );
14490
14491        // 2. Toggle again, suppose it will change the mode to light
14492        workspace.update_in(cx, |workspace, window, cx| {
14493            workspace.toggle_theme_mode(&ToggleMode, window, cx);
14494        });
14495        cx.executor().advance_clock(Duration::from_millis(200));
14496        cx.run_until_parked();
14497
14498        let settings_text = SettingsStore::load_settings(&settings_fs).await.unwrap();
14499        assert!(settings_text.contains(r#""mode": "light""#));
14500    }
14501
14502    fn dirty_project_item(id: u64, path: &str, cx: &mut App) -> Entity<TestProjectItem> {
14503        let item = TestProjectItem::new(id, path, cx);
14504        item.update(cx, |item, _| {
14505            item.is_dirty = true;
14506        });
14507        item
14508    }
14509
14510    #[gpui::test]
14511    async fn test_zoomed_panel_without_pane_preserved_on_center_focus(
14512        cx: &mut gpui::TestAppContext,
14513    ) {
14514        init_test(cx);
14515        let fs = FakeFs::new(cx.executor());
14516
14517        let project = Project::test(fs, [], cx).await;
14518        let (workspace, cx) =
14519            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
14520
14521        let panel = workspace.update_in(cx, |workspace, window, cx| {
14522            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
14523            workspace.add_panel(panel.clone(), window, cx);
14524            workspace
14525                .right_dock()
14526                .update(cx, |dock, cx| dock.set_open(true, window, cx));
14527            panel
14528        });
14529
14530        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
14531        pane.update_in(cx, |pane, window, cx| {
14532            let item = cx.new(TestItem::new);
14533            pane.add_item(Box::new(item), true, true, None, window, cx);
14534        });
14535
14536        // Transfer focus to the panel, then zoom it. Using toggle_panel_focus
14537        // mirrors the real-world flow and avoids side effects from directly
14538        // focusing the panel while the center pane is active.
14539        workspace.update_in(cx, |workspace, window, cx| {
14540            workspace.toggle_panel_focus::<TestPanel>(window, cx);
14541        });
14542
14543        panel.update_in(cx, |panel, window, cx| {
14544            panel.set_zoomed(true, window, cx);
14545        });
14546
14547        workspace.update_in(cx, |workspace, window, cx| {
14548            assert!(workspace.right_dock().read(cx).is_open());
14549            assert!(panel.is_zoomed(window, cx));
14550            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
14551        });
14552
14553        // Simulate a spurious pane::Event::Focus on the center pane while the
14554        // panel still has focus. This mirrors what happens during macOS window
14555        // activation: the center pane fires a focus event even though actual
14556        // focus remains on the dock panel.
14557        pane.update_in(cx, |_, _, cx| {
14558            cx.emit(pane::Event::Focus);
14559        });
14560
14561        // The dock must remain open because the panel had focus at the time the
14562        // event was processed. Before the fix, dock_to_preserve was None for
14563        // panels that don't implement pane(), causing the dock to close.
14564        workspace.update_in(cx, |workspace, window, cx| {
14565            assert!(
14566                workspace.right_dock().read(cx).is_open(),
14567                "Dock should stay open when its zoomed panel (without pane()) still has focus"
14568            );
14569            assert!(panel.is_zoomed(window, cx));
14570        });
14571    }
14572
14573    #[gpui::test]
14574    async fn test_panels_stay_open_after_position_change_and_settings_update(
14575        cx: &mut gpui::TestAppContext,
14576    ) {
14577        init_test(cx);
14578        let fs = FakeFs::new(cx.executor());
14579        let project = Project::test(fs, [], cx).await;
14580        let (workspace, cx) =
14581            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
14582
14583        // Add two panels to the left dock and open it.
14584        let (panel_a, panel_b) = workspace.update_in(cx, |workspace, window, cx| {
14585            let panel_a = cx.new(|cx| TestPanel::new(DockPosition::Left, 100, cx));
14586            let panel_b = cx.new(|cx| TestPanel::new(DockPosition::Left, 101, cx));
14587            workspace.add_panel(panel_a.clone(), window, cx);
14588            workspace.add_panel(panel_b.clone(), window, cx);
14589            workspace.left_dock().update(cx, |dock, cx| {
14590                dock.set_open(true, window, cx);
14591                dock.activate_panel(0, window, cx);
14592            });
14593            (panel_a, panel_b)
14594        });
14595
14596        workspace.update_in(cx, |workspace, _, cx| {
14597            assert!(workspace.left_dock().read(cx).is_open());
14598        });
14599
14600        // Simulate a feature flag changing default dock positions: both panels
14601        // move from Left to Right.
14602        workspace.update_in(cx, |_workspace, _window, cx| {
14603            panel_a.update(cx, |p, _cx| p.position = DockPosition::Right);
14604            panel_b.update(cx, |p, _cx| p.position = DockPosition::Right);
14605            cx.update_global::<SettingsStore, _>(|_, _| {});
14606        });
14607
14608        // Both panels should now be in the right dock.
14609        workspace.update_in(cx, |workspace, _, cx| {
14610            let right_dock = workspace.right_dock().read(cx);
14611            assert_eq!(right_dock.panels_len(), 2);
14612        });
14613
14614        // Open the right dock and activate panel_b (simulating the user
14615        // opening the panel after it moved).
14616        workspace.update_in(cx, |workspace, window, cx| {
14617            workspace.right_dock().update(cx, |dock, cx| {
14618                dock.set_open(true, window, cx);
14619                dock.activate_panel(1, window, cx);
14620            });
14621        });
14622
14623        // Now trigger another SettingsStore change
14624        workspace.update_in(cx, |_workspace, _window, cx| {
14625            cx.update_global::<SettingsStore, _>(|_, _| {});
14626        });
14627
14628        workspace.update_in(cx, |workspace, _, cx| {
14629            assert!(
14630                workspace.right_dock().read(cx).is_open(),
14631                "Right dock should still be open after a settings change"
14632            );
14633            assert_eq!(
14634                workspace.right_dock().read(cx).panels_len(),
14635                2,
14636                "Both panels should still be in the right dock"
14637            );
14638        });
14639    }
14640}