workspace.rs

    1pub mod active_file_name;
    2pub mod dock;
    3pub mod history_manager;
    4pub mod invalid_item_view;
    5pub mod item;
    6mod modal_layer;
    7mod multi_workspace;
    8pub mod notifications;
    9pub mod pane;
   10pub mod pane_group;
   11pub mod path_list {
   12    pub use util::path_list::{PathList, SerializedPathList};
   13}
   14mod persistence;
   15pub mod searchable;
   16mod security_modal;
   17pub mod shared_screen;
   18use db::smol::future::yield_now;
   19pub use shared_screen::SharedScreen;
   20mod status_bar;
   21pub mod tasks;
   22mod theme_preview;
   23mod toast_layer;
   24mod toolbar;
   25pub mod welcome;
   26mod workspace_settings;
   27
   28pub use crate::notifications::NotificationFrame;
   29pub use dock::Panel;
   30pub use multi_workspace::{
   31    CloseWorkspaceSidebar, DraggedSidebar, FocusWorkspaceSidebar, MultiWorkspace,
   32    MultiWorkspaceEvent, NextWorkspace, PreviousWorkspace, Sidebar, SidebarHandle,
   33    SidebarRenderState, SidebarSide, ToggleWorkspaceSidebar, sidebar_side_context_menu,
   34};
   35pub use path_list::{PathList, SerializedPathList};
   36pub use toast_layer::{ToastAction, ToastLayer, ToastView};
   37
   38use anyhow::{Context as _, Result, anyhow};
   39use client::{
   40    ChannelId, Client, ErrorExt, ParticipantIndex, Status, TypedEnvelope, User, UserStore,
   41    proto::{self, ErrorCode, PanelId, PeerId},
   42};
   43use collections::{HashMap, HashSet, hash_map};
   44use dock::{Dock, DockPosition, PanelButtons, PanelHandle, RESIZE_HANDLE_SIZE};
   45use fs::Fs;
   46use futures::{
   47    Future, FutureExt, StreamExt,
   48    channel::{
   49        mpsc::{self, UnboundedReceiver, UnboundedSender},
   50        oneshot,
   51    },
   52    future::{Shared, try_join_all},
   53};
   54use gpui::{
   55    Action, AnyEntity, AnyView, AnyWeakView, App, AsyncApp, AsyncWindowContext, Axis, Bounds,
   56    Context, CursorStyle, Decorations, DragMoveEvent, Entity, EntityId, EventEmitter, FocusHandle,
   57    Focusable, Global, HitboxBehavior, Hsla, KeyContext, Keystroke, ManagedView, MouseButton,
   58    PathPromptOptions, Point, PromptLevel, Render, ResizeEdge, Size, Stateful, Subscription,
   59    SystemWindowTabController, Task, Tiling, WeakEntity, WindowBounds, WindowHandle, WindowId,
   60    WindowOptions, actions, canvas, point, relative, size, transparent_black,
   61};
   62pub use history_manager::*;
   63pub use item::{
   64    FollowableItem, FollowableItemHandle, Item, ItemHandle, ItemSettings, PreviewTabsSettings,
   65    ProjectItem, SerializableItem, SerializableItemHandle, WeakItemHandle,
   66};
   67use itertools::Itertools;
   68use language::{Buffer, LanguageRegistry, Rope, language_settings::all_language_settings};
   69pub use modal_layer::*;
   70use node_runtime::NodeRuntime;
   71use notifications::{
   72    DetachAndPromptErr, Notifications, dismiss_app_notification,
   73    simple_message_notification::MessageNotification,
   74};
   75pub use pane::*;
   76pub use pane_group::{
   77    ActivePaneDecorator, HANDLE_HITBOX_SIZE, Member, PaneAxis, PaneGroup, PaneRenderContext,
   78    SplitDirection,
   79};
   80use persistence::{SerializedWindowBounds, model::SerializedWorkspace};
   81pub use persistence::{
   82    WorkspaceDb, delete_unloaded_items,
   83    model::{
   84        DockStructure, ItemId, SerializedMultiWorkspace, SerializedWorkspaceLocation,
   85        SessionWorkspace,
   86    },
   87    read_serialized_multi_workspaces, resolve_worktree_workspaces,
   88};
   89use postage::stream::Stream;
   90use project::{
   91    DirectoryLister, Project, ProjectEntryId, ProjectPath, ResolvedPath, Worktree, WorktreeId,
   92    WorktreeSettings,
   93    debugger::{breakpoint_store::BreakpointStoreEvent, session::ThreadStatus},
   94    project_settings::ProjectSettings,
   95    toolchain_store::ToolchainStoreEvent,
   96    trusted_worktrees::{RemoteHostLocation, TrustedWorktrees, TrustedWorktreesEvent},
   97};
   98use remote::{
   99    RemoteClientDelegate, RemoteConnection, RemoteConnectionOptions,
  100    remote_client::ConnectionIdentifier,
  101};
  102use schemars::JsonSchema;
  103use serde::Deserialize;
  104use session::AppSession;
  105use settings::{
  106    CenteredPaddingSettings, Settings, SettingsLocation, SettingsStore, update_settings_file,
  107};
  108
  109use sqlez::{
  110    bindable::{Bind, Column, StaticColumnCount},
  111    statement::Statement,
  112};
  113use status_bar::StatusBar;
  114pub use status_bar::StatusItemView;
  115use std::{
  116    any::TypeId,
  117    borrow::Cow,
  118    cell::RefCell,
  119    cmp,
  120    collections::VecDeque,
  121    env,
  122    hash::Hash,
  123    path::{Path, PathBuf},
  124    process::ExitStatus,
  125    rc::Rc,
  126    sync::{
  127        Arc, LazyLock,
  128        atomic::{AtomicBool, AtomicUsize},
  129    },
  130    time::Duration,
  131};
  132use task::{DebugScenario, SharedTaskContext, SpawnInTerminal};
  133use theme::{ActiveTheme, SystemAppearance};
  134use theme_settings::ThemeSettings;
  135pub use toolbar::{
  136    PaneSearchBarCallbacks, Toolbar, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView,
  137};
  138pub use ui;
  139use ui::{Window, prelude::*};
  140use util::{
  141    ResultExt, TryFutureExt,
  142    paths::{PathStyle, SanitizedPath},
  143    rel_path::RelPath,
  144    serde::default_true,
  145};
  146use uuid::Uuid;
  147pub use workspace_settings::{
  148    AutosaveSetting, BottomDockLayout, RestoreOnStartupBehavior, StatusBarSettings, TabBarSettings,
  149    WorkspaceSettings,
  150};
  151use zed_actions::{Spawn, feedback::FileBugReport, theme::ToggleMode};
  152
  153use crate::{dock::PanelSizeState, item::ItemBufferKind, notifications::NotificationId};
  154use crate::{
  155    persistence::{
  156        SerializedAxis,
  157        model::{DockData, SerializedItem, SerializedPane, SerializedPaneGroup},
  158    },
  159    security_modal::SecurityModal,
  160};
  161
  162pub const SERIALIZATION_THROTTLE_TIME: Duration = Duration::from_millis(200);
  163
  164static ZED_WINDOW_SIZE: LazyLock<Option<Size<Pixels>>> = LazyLock::new(|| {
  165    env::var("ZED_WINDOW_SIZE")
  166        .ok()
  167        .as_deref()
  168        .and_then(parse_pixel_size_env_var)
  169});
  170
  171static ZED_WINDOW_POSITION: LazyLock<Option<Point<Pixels>>> = LazyLock::new(|| {
  172    env::var("ZED_WINDOW_POSITION")
  173        .ok()
  174        .as_deref()
  175        .and_then(parse_pixel_position_env_var)
  176});
  177
  178pub trait TerminalProvider {
  179    fn spawn(
  180        &self,
  181        task: SpawnInTerminal,
  182        window: &mut Window,
  183        cx: &mut App,
  184    ) -> Task<Option<Result<ExitStatus>>>;
  185}
  186
  187pub trait DebuggerProvider {
  188    // `active_buffer` is used to resolve build task's name against language-specific tasks.
  189    fn start_session(
  190        &self,
  191        definition: DebugScenario,
  192        task_context: SharedTaskContext,
  193        active_buffer: Option<Entity<Buffer>>,
  194        worktree_id: Option<WorktreeId>,
  195        window: &mut Window,
  196        cx: &mut App,
  197    );
  198
  199    fn spawn_task_or_modal(
  200        &self,
  201        workspace: &mut Workspace,
  202        action: &Spawn,
  203        window: &mut Window,
  204        cx: &mut Context<Workspace>,
  205    );
  206
  207    fn task_scheduled(&self, cx: &mut App);
  208    fn debug_scenario_scheduled(&self, cx: &mut App);
  209    fn debug_scenario_scheduled_last(&self, cx: &App) -> bool;
  210
  211    fn active_thread_state(&self, cx: &App) -> Option<ThreadStatus>;
  212}
  213
  214/// Opens a file or directory.
  215#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  216#[action(namespace = workspace)]
  217pub struct Open {
  218    /// When true, opens in a new window. When false, adds to the current
  219    /// window as a new workspace (multi-workspace).
  220    #[serde(default = "Open::default_create_new_window")]
  221    pub create_new_window: bool,
  222}
  223
  224impl Open {
  225    pub const DEFAULT: Self = Self {
  226        create_new_window: true,
  227    };
  228
  229    /// Used by `#[serde(default)]` on the `create_new_window` field so that
  230    /// the serde default and `Open::DEFAULT` stay in sync.
  231    fn default_create_new_window() -> bool {
  232        Self::DEFAULT.create_new_window
  233    }
  234}
  235
  236impl Default for Open {
  237    fn default() -> Self {
  238        Self::DEFAULT
  239    }
  240}
  241
  242actions!(
  243    workspace,
  244    [
  245        /// Activates the next pane in the workspace.
  246        ActivateNextPane,
  247        /// Activates the previous pane in the workspace.
  248        ActivatePreviousPane,
  249        /// Activates the last pane in the workspace.
  250        ActivateLastPane,
  251        /// Switches to the next window.
  252        ActivateNextWindow,
  253        /// Switches to the previous window.
  254        ActivatePreviousWindow,
  255        /// Adds a folder to the current project.
  256        AddFolderToProject,
  257        /// Clears all notifications.
  258        ClearAllNotifications,
  259        /// Clears all navigation history, including forward/backward navigation, recently opened files, and recently closed tabs. **This action is irreversible**.
  260        ClearNavigationHistory,
  261        /// Closes the active dock.
  262        CloseActiveDock,
  263        /// Closes all docks.
  264        CloseAllDocks,
  265        /// Toggles all docks.
  266        ToggleAllDocks,
  267        /// Closes the current window.
  268        CloseWindow,
  269        /// Closes the current project.
  270        CloseProject,
  271        /// Opens the feedback dialog.
  272        Feedback,
  273        /// Follows the next collaborator in the session.
  274        FollowNextCollaborator,
  275        /// Moves the focused panel to the next position.
  276        MoveFocusedPanelToNextPosition,
  277        /// Creates a new file.
  278        NewFile,
  279        /// Creates a new file in a vertical split.
  280        NewFileSplitVertical,
  281        /// Creates a new file in a horizontal split.
  282        NewFileSplitHorizontal,
  283        /// Opens a new search.
  284        NewSearch,
  285        /// Opens a new window.
  286        NewWindow,
  287        /// Opens multiple files.
  288        OpenFiles,
  289        /// Opens the current location in terminal.
  290        OpenInTerminal,
  291        /// Opens the component preview.
  292        OpenComponentPreview,
  293        /// Reloads the active item.
  294        ReloadActiveItem,
  295        /// Resets the active dock to its default size.
  296        ResetActiveDockSize,
  297        /// Resets all open docks to their default sizes.
  298        ResetOpenDocksSize,
  299        /// Reloads the application
  300        Reload,
  301        /// Saves the current file with a new name.
  302        SaveAs,
  303        /// Saves without formatting.
  304        SaveWithoutFormat,
  305        /// Shuts down all debug adapters.
  306        ShutdownDebugAdapters,
  307        /// Suppresses the current notification.
  308        SuppressNotification,
  309        /// Toggles the bottom dock.
  310        ToggleBottomDock,
  311        /// Toggles centered layout mode.
  312        ToggleCenteredLayout,
  313        /// Toggles edit prediction feature globally for all files.
  314        ToggleEditPrediction,
  315        /// Toggles the left dock.
  316        ToggleLeftDock,
  317        /// Toggles the right dock.
  318        ToggleRightDock,
  319        /// Toggles zoom on the active pane.
  320        ToggleZoom,
  321        /// Toggles read-only mode for the active item (if supported by that item).
  322        ToggleReadOnlyFile,
  323        /// Zooms in on the active pane.
  324        ZoomIn,
  325        /// Zooms out of the active pane.
  326        ZoomOut,
  327        /// If any worktrees are in restricted mode, shows a modal with possible actions.
  328        /// If the modal is shown already, closes it without trusting any worktree.
  329        ToggleWorktreeSecurity,
  330        /// Clears all trusted worktrees, placing them in restricted mode on next open.
  331        /// Requires restart to take effect on already opened projects.
  332        ClearTrustedWorktrees,
  333        /// Stops following a collaborator.
  334        Unfollow,
  335        /// Restores the banner.
  336        RestoreBanner,
  337        /// Toggles expansion of the selected item.
  338        ToggleExpandItem,
  339    ]
  340);
  341
  342/// Activates a specific pane by its index.
  343#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  344#[action(namespace = workspace)]
  345pub struct ActivatePane(pub usize);
  346
  347/// Moves an item to a specific pane by index.
  348#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  349#[action(namespace = workspace)]
  350#[serde(deny_unknown_fields)]
  351pub struct MoveItemToPane {
  352    #[serde(default = "default_1")]
  353    pub destination: usize,
  354    #[serde(default = "default_true")]
  355    pub focus: bool,
  356    #[serde(default)]
  357    pub clone: bool,
  358}
  359
  360fn default_1() -> usize {
  361    1
  362}
  363
  364/// Moves an item to a pane in the specified direction.
  365#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  366#[action(namespace = workspace)]
  367#[serde(deny_unknown_fields)]
  368pub struct MoveItemToPaneInDirection {
  369    #[serde(default = "default_right")]
  370    pub direction: SplitDirection,
  371    #[serde(default = "default_true")]
  372    pub focus: bool,
  373    #[serde(default)]
  374    pub clone: bool,
  375}
  376
  377/// Creates a new file in a split of the desired direction.
  378#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  379#[action(namespace = workspace)]
  380#[serde(deny_unknown_fields)]
  381pub struct NewFileSplit(pub SplitDirection);
  382
  383fn default_right() -> SplitDirection {
  384    SplitDirection::Right
  385}
  386
  387/// Saves all open files in the workspace.
  388#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  389#[action(namespace = workspace)]
  390#[serde(deny_unknown_fields)]
  391pub struct SaveAll {
  392    #[serde(default)]
  393    pub save_intent: Option<SaveIntent>,
  394}
  395
  396/// Saves the current file with the specified options.
  397#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  398#[action(namespace = workspace)]
  399#[serde(deny_unknown_fields)]
  400pub struct Save {
  401    #[serde(default)]
  402    pub save_intent: Option<SaveIntent>,
  403}
  404
  405/// Moves Focus to the central panes in the workspace.
  406#[derive(Clone, Debug, PartialEq, Eq, Action)]
  407#[action(namespace = workspace)]
  408pub struct FocusCenterPane;
  409
  410///  Closes all items and panes in the workspace.
  411#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  412#[action(namespace = workspace)]
  413#[serde(deny_unknown_fields)]
  414pub struct CloseAllItemsAndPanes {
  415    #[serde(default)]
  416    pub save_intent: Option<SaveIntent>,
  417}
  418
  419/// Closes all inactive tabs and panes in the workspace.
  420#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  421#[action(namespace = workspace)]
  422#[serde(deny_unknown_fields)]
  423pub struct CloseInactiveTabsAndPanes {
  424    #[serde(default)]
  425    pub save_intent: Option<SaveIntent>,
  426}
  427
  428/// Closes the active item across all panes.
  429#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  430#[action(namespace = workspace)]
  431#[serde(deny_unknown_fields)]
  432pub struct CloseItemInAllPanes {
  433    #[serde(default)]
  434    pub save_intent: Option<SaveIntent>,
  435    #[serde(default)]
  436    pub close_pinned: bool,
  437}
  438
  439/// Sends a sequence of keystrokes to the active element.
  440#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  441#[action(namespace = workspace)]
  442pub struct SendKeystrokes(pub String);
  443
  444actions!(
  445    project_symbols,
  446    [
  447        /// Toggles the project symbols search.
  448        #[action(name = "Toggle")]
  449        ToggleProjectSymbols
  450    ]
  451);
  452
  453/// Toggles the file finder interface.
  454#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  455#[action(namespace = file_finder, name = "Toggle")]
  456#[serde(deny_unknown_fields)]
  457pub struct ToggleFileFinder {
  458    #[serde(default)]
  459    pub separate_history: bool,
  460}
  461
  462/// Opens a new terminal in the center.
  463#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  464#[action(namespace = workspace)]
  465#[serde(deny_unknown_fields)]
  466pub struct NewCenterTerminal {
  467    /// If true, creates a local terminal even in remote projects.
  468    #[serde(default)]
  469    pub local: bool,
  470}
  471
  472/// Opens a new terminal.
  473#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  474#[action(namespace = workspace)]
  475#[serde(deny_unknown_fields)]
  476pub struct NewTerminal {
  477    /// If true, creates a local terminal even in remote projects.
  478    #[serde(default)]
  479    pub local: bool,
  480}
  481
  482/// Increases size of a currently focused dock by a given amount of pixels.
  483#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  484#[action(namespace = workspace)]
  485#[serde(deny_unknown_fields)]
  486pub struct IncreaseActiveDockSize {
  487    /// For 0px parameter, uses UI font size value.
  488    #[serde(default)]
  489    pub px: u32,
  490}
  491
  492/// Decreases size of a currently focused dock by a given amount of pixels.
  493#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  494#[action(namespace = workspace)]
  495#[serde(deny_unknown_fields)]
  496pub struct DecreaseActiveDockSize {
  497    /// For 0px parameter, uses UI font size value.
  498    #[serde(default)]
  499    pub px: u32,
  500}
  501
  502/// Increases size of all currently visible docks uniformly, by a given amount of pixels.
  503#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  504#[action(namespace = workspace)]
  505#[serde(deny_unknown_fields)]
  506pub struct IncreaseOpenDocksSize {
  507    /// For 0px parameter, uses UI font size value.
  508    #[serde(default)]
  509    pub px: u32,
  510}
  511
  512/// Decreases size of all currently visible docks uniformly, by a given amount of pixels.
  513#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  514#[action(namespace = workspace)]
  515#[serde(deny_unknown_fields)]
  516pub struct DecreaseOpenDocksSize {
  517    /// For 0px parameter, uses UI font size value.
  518    #[serde(default)]
  519    pub px: u32,
  520}
  521
  522actions!(
  523    workspace,
  524    [
  525        /// Activates the pane to the left.
  526        ActivatePaneLeft,
  527        /// Activates the pane to the right.
  528        ActivatePaneRight,
  529        /// Activates the pane above.
  530        ActivatePaneUp,
  531        /// Activates the pane below.
  532        ActivatePaneDown,
  533        /// Swaps the current pane with the one to the left.
  534        SwapPaneLeft,
  535        /// Swaps the current pane with the one to the right.
  536        SwapPaneRight,
  537        /// Swaps the current pane with the one above.
  538        SwapPaneUp,
  539        /// Swaps the current pane with the one below.
  540        SwapPaneDown,
  541        // Swaps the current pane with the first available adjacent pane (searching in order: below, above, right, left) and activates that pane.
  542        SwapPaneAdjacent,
  543        /// Move the current pane to be at the far left.
  544        MovePaneLeft,
  545        /// Move the current pane to be at the far right.
  546        MovePaneRight,
  547        /// Move the current pane to be at the very top.
  548        MovePaneUp,
  549        /// Move the current pane to be at the very bottom.
  550        MovePaneDown,
  551    ]
  552);
  553
  554#[derive(PartialEq, Eq, Debug)]
  555pub enum CloseIntent {
  556    /// Quit the program entirely.
  557    Quit,
  558    /// Close a window.
  559    CloseWindow,
  560    /// Replace the workspace in an existing window.
  561    ReplaceWindow,
  562}
  563
  564#[derive(Clone)]
  565pub struct Toast {
  566    id: NotificationId,
  567    msg: Cow<'static, str>,
  568    autohide: bool,
  569    on_click: Option<(Cow<'static, str>, Arc<dyn Fn(&mut Window, &mut App)>)>,
  570}
  571
  572impl Toast {
  573    pub fn new<I: Into<Cow<'static, str>>>(id: NotificationId, msg: I) -> Self {
  574        Toast {
  575            id,
  576            msg: msg.into(),
  577            on_click: None,
  578            autohide: false,
  579        }
  580    }
  581
  582    pub fn on_click<F, M>(mut self, message: M, on_click: F) -> Self
  583    where
  584        M: Into<Cow<'static, str>>,
  585        F: Fn(&mut Window, &mut App) + 'static,
  586    {
  587        self.on_click = Some((message.into(), Arc::new(on_click)));
  588        self
  589    }
  590
  591    pub fn autohide(mut self) -> Self {
  592        self.autohide = true;
  593        self
  594    }
  595}
  596
  597impl PartialEq for Toast {
  598    fn eq(&self, other: &Self) -> bool {
  599        self.id == other.id
  600            && self.msg == other.msg
  601            && self.on_click.is_some() == other.on_click.is_some()
  602    }
  603}
  604
  605/// Opens a new terminal with the specified working directory.
  606#[derive(Debug, Default, Clone, Deserialize, PartialEq, JsonSchema, Action)]
  607#[action(namespace = workspace)]
  608#[serde(deny_unknown_fields)]
  609pub struct OpenTerminal {
  610    pub working_directory: PathBuf,
  611    /// If true, creates a local terminal even in remote projects.
  612    #[serde(default)]
  613    pub local: bool,
  614}
  615
  616#[derive(
  617    Clone,
  618    Copy,
  619    Debug,
  620    Default,
  621    Hash,
  622    PartialEq,
  623    Eq,
  624    PartialOrd,
  625    Ord,
  626    serde::Serialize,
  627    serde::Deserialize,
  628)]
  629pub struct WorkspaceId(i64);
  630
  631impl WorkspaceId {
  632    pub fn from_i64(value: i64) -> Self {
  633        Self(value)
  634    }
  635}
  636
  637impl StaticColumnCount for WorkspaceId {}
  638impl Bind for WorkspaceId {
  639    fn bind(&self, statement: &Statement, start_index: i32) -> Result<i32> {
  640        self.0.bind(statement, start_index)
  641    }
  642}
  643impl Column for WorkspaceId {
  644    fn column(statement: &mut Statement, start_index: i32) -> Result<(Self, i32)> {
  645        i64::column(statement, start_index)
  646            .map(|(i, next_index)| (Self(i), next_index))
  647            .with_context(|| format!("Failed to read WorkspaceId at index {start_index}"))
  648    }
  649}
  650impl From<WorkspaceId> for i64 {
  651    fn from(val: WorkspaceId) -> Self {
  652        val.0
  653    }
  654}
  655
  656fn prompt_and_open_paths(app_state: Arc<AppState>, options: PathPromptOptions, cx: &mut App) {
  657    if let Some(workspace_window) = local_workspace_windows(cx).into_iter().next() {
  658        workspace_window
  659            .update(cx, |multi_workspace, window, cx| {
  660                let workspace = multi_workspace.workspace().clone();
  661                workspace.update(cx, |workspace, cx| {
  662                    prompt_for_open_path_and_open(workspace, app_state, options, true, window, cx);
  663                });
  664            })
  665            .ok();
  666    } else {
  667        let task = Workspace::new_local(
  668            Vec::new(),
  669            app_state.clone(),
  670            None,
  671            None,
  672            None,
  673            OpenMode::Replace,
  674            cx,
  675        );
  676        cx.spawn(async move |cx| {
  677            let OpenResult { window, .. } = task.await?;
  678            window.update(cx, |multi_workspace, window, cx| {
  679                window.activate_window();
  680                let workspace = multi_workspace.workspace().clone();
  681                workspace.update(cx, |workspace, cx| {
  682                    prompt_for_open_path_and_open(workspace, app_state, options, true, window, cx);
  683                });
  684            })?;
  685            anyhow::Ok(())
  686        })
  687        .detach_and_log_err(cx);
  688    }
  689}
  690
  691pub fn prompt_for_open_path_and_open(
  692    workspace: &mut Workspace,
  693    app_state: Arc<AppState>,
  694    options: PathPromptOptions,
  695    create_new_window: bool,
  696    window: &mut Window,
  697    cx: &mut Context<Workspace>,
  698) {
  699    let paths = workspace.prompt_for_open_path(
  700        options,
  701        DirectoryLister::Local(workspace.project().clone(), app_state.fs.clone()),
  702        window,
  703        cx,
  704    );
  705    let multi_workspace_handle = window.window_handle().downcast::<MultiWorkspace>();
  706    cx.spawn_in(window, async move |this, cx| {
  707        let Some(paths) = paths.await.log_err().flatten() else {
  708            return;
  709        };
  710        if !create_new_window {
  711            if let Some(handle) = multi_workspace_handle {
  712                if let Some(task) = handle
  713                    .update(cx, |multi_workspace, window, cx| {
  714                        multi_workspace.open_project(paths, OpenMode::Replace, window, cx)
  715                    })
  716                    .log_err()
  717                {
  718                    task.await.log_err();
  719                }
  720                return;
  721            }
  722        }
  723        if let Some(task) = this
  724            .update_in(cx, |this, window, cx| {
  725                this.open_workspace_for_paths(OpenMode::NewWindow, paths, window, cx)
  726            })
  727            .log_err()
  728        {
  729            task.await.log_err();
  730        }
  731    })
  732    .detach();
  733}
  734
  735pub fn init(app_state: Arc<AppState>, cx: &mut App) {
  736    component::init();
  737    theme_preview::init(cx);
  738    toast_layer::init(cx);
  739    history_manager::init(app_state.fs.clone(), cx);
  740
  741    cx.on_action(|_: &CloseWindow, cx| Workspace::close_global(cx))
  742        .on_action(|_: &Reload, cx| reload(cx))
  743        .on_action(|_: &Open, cx: &mut App| {
  744            let app_state = AppState::global(cx);
  745            prompt_and_open_paths(
  746                app_state,
  747                PathPromptOptions {
  748                    files: true,
  749                    directories: true,
  750                    multiple: true,
  751                    prompt: None,
  752                },
  753                cx,
  754            );
  755        })
  756        .on_action(|_: &OpenFiles, cx: &mut App| {
  757            let directories = cx.can_select_mixed_files_and_dirs();
  758            let app_state = AppState::global(cx);
  759            prompt_and_open_paths(
  760                app_state,
  761                PathPromptOptions {
  762                    files: true,
  763                    directories,
  764                    multiple: true,
  765                    prompt: None,
  766                },
  767                cx,
  768            );
  769        });
  770}
  771
  772type BuildProjectItemFn =
  773    fn(AnyEntity, Entity<Project>, Option<&Pane>, &mut Window, &mut App) -> Box<dyn ItemHandle>;
  774
  775type BuildProjectItemForPathFn =
  776    fn(
  777        &Entity<Project>,
  778        &ProjectPath,
  779        &mut Window,
  780        &mut App,
  781    ) -> Option<Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>>>;
  782
  783#[derive(Clone, Default)]
  784struct ProjectItemRegistry {
  785    build_project_item_fns_by_type: HashMap<TypeId, BuildProjectItemFn>,
  786    build_project_item_for_path_fns: Vec<BuildProjectItemForPathFn>,
  787}
  788
  789impl ProjectItemRegistry {
  790    fn register<T: ProjectItem>(&mut self) {
  791        self.build_project_item_fns_by_type.insert(
  792            TypeId::of::<T::Item>(),
  793            |item, project, pane, window, cx| {
  794                let item = item.downcast().unwrap();
  795                Box::new(cx.new(|cx| T::for_project_item(project, pane, item, window, cx)))
  796                    as Box<dyn ItemHandle>
  797            },
  798        );
  799        self.build_project_item_for_path_fns
  800            .push(|project, project_path, window, cx| {
  801                let project_path = project_path.clone();
  802                let is_file = project
  803                    .read(cx)
  804                    .entry_for_path(&project_path, cx)
  805                    .is_some_and(|entry| entry.is_file());
  806                let entry_abs_path = project.read(cx).absolute_path(&project_path, cx);
  807                let is_local = project.read(cx).is_local();
  808                let project_item =
  809                    <T::Item as project::ProjectItem>::try_open(project, &project_path, cx)?;
  810                let project = project.clone();
  811                Some(window.spawn(cx, async move |cx| {
  812                    match project_item.await.with_context(|| {
  813                        format!(
  814                            "opening project path {:?}",
  815                            entry_abs_path.as_deref().unwrap_or(&project_path.path.as_std_path())
  816                        )
  817                    }) {
  818                        Ok(project_item) => {
  819                            let project_item = project_item;
  820                            let project_entry_id: Option<ProjectEntryId> =
  821                                project_item.read_with(cx, project::ProjectItem::entry_id);
  822                            let build_workspace_item = Box::new(
  823                                |pane: &mut Pane, window: &mut Window, cx: &mut Context<Pane>| {
  824                                    Box::new(cx.new(|cx| {
  825                                        T::for_project_item(
  826                                            project,
  827                                            Some(pane),
  828                                            project_item,
  829                                            window,
  830                                            cx,
  831                                        )
  832                                    })) as Box<dyn ItemHandle>
  833                                },
  834                            ) as Box<_>;
  835                            Ok((project_entry_id, build_workspace_item))
  836                        }
  837                        Err(e) => {
  838                            log::warn!("Failed to open a project item: {e:#}");
  839                            if e.error_code() == ErrorCode::Internal {
  840                                if let Some(abs_path) =
  841                                    entry_abs_path.as_deref().filter(|_| is_file)
  842                                {
  843                                    if let Some(broken_project_item_view) =
  844                                        cx.update(|window, cx| {
  845                                            T::for_broken_project_item(
  846                                                abs_path, is_local, &e, window, cx,
  847                                            )
  848                                        })?
  849                                    {
  850                                        let build_workspace_item = Box::new(
  851                                            move |_: &mut Pane, _: &mut Window, cx: &mut Context<Pane>| {
  852                                                cx.new(|_| broken_project_item_view).boxed_clone()
  853                                            },
  854                                        )
  855                                        as Box<_>;
  856                                        return Ok((None, build_workspace_item));
  857                                    }
  858                                }
  859                            }
  860                            Err(e)
  861                        }
  862                    }
  863                }))
  864            });
  865    }
  866
  867    fn open_path(
  868        &self,
  869        project: &Entity<Project>,
  870        path: &ProjectPath,
  871        window: &mut Window,
  872        cx: &mut App,
  873    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
  874        let Some(open_project_item) = self
  875            .build_project_item_for_path_fns
  876            .iter()
  877            .rev()
  878            .find_map(|open_project_item| open_project_item(project, path, window, cx))
  879        else {
  880            return Task::ready(Err(anyhow!("cannot open file {:?}", path.path)));
  881        };
  882        open_project_item
  883    }
  884
  885    fn build_item<T: project::ProjectItem>(
  886        &self,
  887        item: Entity<T>,
  888        project: Entity<Project>,
  889        pane: Option<&Pane>,
  890        window: &mut Window,
  891        cx: &mut App,
  892    ) -> Option<Box<dyn ItemHandle>> {
  893        let build = self
  894            .build_project_item_fns_by_type
  895            .get(&TypeId::of::<T>())?;
  896        Some(build(item.into_any(), project, pane, window, cx))
  897    }
  898}
  899
  900type WorkspaceItemBuilder =
  901    Box<dyn FnOnce(&mut Pane, &mut Window, &mut Context<Pane>) -> Box<dyn ItemHandle>>;
  902
  903impl Global for ProjectItemRegistry {}
  904
  905/// Registers a [ProjectItem] for the app. When opening a file, all the registered
  906/// items will get a chance to open the file, starting from the project item that
  907/// was added last.
  908pub fn register_project_item<I: ProjectItem>(cx: &mut App) {
  909    cx.default_global::<ProjectItemRegistry>().register::<I>();
  910}
  911
  912#[derive(Default)]
  913pub struct FollowableViewRegistry(HashMap<TypeId, FollowableViewDescriptor>);
  914
  915struct FollowableViewDescriptor {
  916    from_state_proto: fn(
  917        Entity<Workspace>,
  918        ViewId,
  919        &mut Option<proto::view::Variant>,
  920        &mut Window,
  921        &mut App,
  922    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>>,
  923    to_followable_view: fn(&AnyView) -> Box<dyn FollowableItemHandle>,
  924}
  925
  926impl Global for FollowableViewRegistry {}
  927
  928impl FollowableViewRegistry {
  929    pub fn register<I: FollowableItem>(cx: &mut App) {
  930        cx.default_global::<Self>().0.insert(
  931            TypeId::of::<I>(),
  932            FollowableViewDescriptor {
  933                from_state_proto: |workspace, id, state, window, cx| {
  934                    I::from_state_proto(workspace, id, state, window, cx).map(|task| {
  935                        cx.foreground_executor()
  936                            .spawn(async move { Ok(Box::new(task.await?) as Box<_>) })
  937                    })
  938                },
  939                to_followable_view: |view| Box::new(view.clone().downcast::<I>().unwrap()),
  940            },
  941        );
  942    }
  943
  944    pub fn from_state_proto(
  945        workspace: Entity<Workspace>,
  946        view_id: ViewId,
  947        mut state: Option<proto::view::Variant>,
  948        window: &mut Window,
  949        cx: &mut App,
  950    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>> {
  951        cx.update_default_global(|this: &mut Self, cx| {
  952            this.0.values().find_map(|descriptor| {
  953                (descriptor.from_state_proto)(workspace.clone(), view_id, &mut state, window, cx)
  954            })
  955        })
  956    }
  957
  958    pub fn to_followable_view(
  959        view: impl Into<AnyView>,
  960        cx: &App,
  961    ) -> Option<Box<dyn FollowableItemHandle>> {
  962        let this = cx.try_global::<Self>()?;
  963        let view = view.into();
  964        let descriptor = this.0.get(&view.entity_type())?;
  965        Some((descriptor.to_followable_view)(&view))
  966    }
  967}
  968
  969#[derive(Copy, Clone)]
  970struct SerializableItemDescriptor {
  971    deserialize: fn(
  972        Entity<Project>,
  973        WeakEntity<Workspace>,
  974        WorkspaceId,
  975        ItemId,
  976        &mut Window,
  977        &mut Context<Pane>,
  978    ) -> Task<Result<Box<dyn ItemHandle>>>,
  979    cleanup: fn(WorkspaceId, Vec<ItemId>, &mut Window, &mut App) -> Task<Result<()>>,
  980    view_to_serializable_item: fn(AnyView) -> Box<dyn SerializableItemHandle>,
  981}
  982
  983#[derive(Default)]
  984struct SerializableItemRegistry {
  985    descriptors_by_kind: HashMap<Arc<str>, SerializableItemDescriptor>,
  986    descriptors_by_type: HashMap<TypeId, SerializableItemDescriptor>,
  987}
  988
  989impl Global for SerializableItemRegistry {}
  990
  991impl SerializableItemRegistry {
  992    fn deserialize(
  993        item_kind: &str,
  994        project: Entity<Project>,
  995        workspace: WeakEntity<Workspace>,
  996        workspace_id: WorkspaceId,
  997        item_item: ItemId,
  998        window: &mut Window,
  999        cx: &mut Context<Pane>,
 1000    ) -> Task<Result<Box<dyn ItemHandle>>> {
 1001        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
 1002            return Task::ready(Err(anyhow!(
 1003                "cannot deserialize {}, descriptor not found",
 1004                item_kind
 1005            )));
 1006        };
 1007
 1008        (descriptor.deserialize)(project, workspace, workspace_id, item_item, window, cx)
 1009    }
 1010
 1011    fn cleanup(
 1012        item_kind: &str,
 1013        workspace_id: WorkspaceId,
 1014        loaded_items: Vec<ItemId>,
 1015        window: &mut Window,
 1016        cx: &mut App,
 1017    ) -> Task<Result<()>> {
 1018        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
 1019            return Task::ready(Err(anyhow!(
 1020                "cannot cleanup {}, descriptor not found",
 1021                item_kind
 1022            )));
 1023        };
 1024
 1025        (descriptor.cleanup)(workspace_id, loaded_items, window, cx)
 1026    }
 1027
 1028    fn view_to_serializable_item_handle(
 1029        view: AnyView,
 1030        cx: &App,
 1031    ) -> Option<Box<dyn SerializableItemHandle>> {
 1032        let this = cx.try_global::<Self>()?;
 1033        let descriptor = this.descriptors_by_type.get(&view.entity_type())?;
 1034        Some((descriptor.view_to_serializable_item)(view))
 1035    }
 1036
 1037    fn descriptor(item_kind: &str, cx: &App) -> Option<SerializableItemDescriptor> {
 1038        let this = cx.try_global::<Self>()?;
 1039        this.descriptors_by_kind.get(item_kind).copied()
 1040    }
 1041}
 1042
 1043pub fn register_serializable_item<I: SerializableItem>(cx: &mut App) {
 1044    let serialized_item_kind = I::serialized_item_kind();
 1045
 1046    let registry = cx.default_global::<SerializableItemRegistry>();
 1047    let descriptor = SerializableItemDescriptor {
 1048        deserialize: |project, workspace, workspace_id, item_id, window, cx| {
 1049            let task = I::deserialize(project, workspace, workspace_id, item_id, window, cx);
 1050            cx.foreground_executor()
 1051                .spawn(async { Ok(Box::new(task.await?) as Box<_>) })
 1052        },
 1053        cleanup: |workspace_id, loaded_items, window, cx| {
 1054            I::cleanup(workspace_id, loaded_items, window, cx)
 1055        },
 1056        view_to_serializable_item: |view| Box::new(view.downcast::<I>().unwrap()),
 1057    };
 1058    registry
 1059        .descriptors_by_kind
 1060        .insert(Arc::from(serialized_item_kind), descriptor);
 1061    registry
 1062        .descriptors_by_type
 1063        .insert(TypeId::of::<I>(), descriptor);
 1064}
 1065
 1066pub struct AppState {
 1067    pub languages: Arc<LanguageRegistry>,
 1068    pub client: Arc<Client>,
 1069    pub user_store: Entity<UserStore>,
 1070    pub workspace_store: Entity<WorkspaceStore>,
 1071    pub fs: Arc<dyn fs::Fs>,
 1072    pub build_window_options: fn(Option<Uuid>, &mut App) -> WindowOptions,
 1073    pub node_runtime: NodeRuntime,
 1074    pub session: Entity<AppSession>,
 1075}
 1076
 1077struct GlobalAppState(Arc<AppState>);
 1078
 1079impl Global for GlobalAppState {}
 1080
 1081pub struct WorkspaceStore {
 1082    workspaces: HashSet<(gpui::AnyWindowHandle, WeakEntity<Workspace>)>,
 1083    client: Arc<Client>,
 1084    _subscriptions: Vec<client::Subscription>,
 1085}
 1086
 1087#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq, PartialOrd, Ord)]
 1088pub enum CollaboratorId {
 1089    PeerId(PeerId),
 1090    Agent,
 1091}
 1092
 1093impl From<PeerId> for CollaboratorId {
 1094    fn from(peer_id: PeerId) -> Self {
 1095        CollaboratorId::PeerId(peer_id)
 1096    }
 1097}
 1098
 1099impl From<&PeerId> for CollaboratorId {
 1100    fn from(peer_id: &PeerId) -> Self {
 1101        CollaboratorId::PeerId(*peer_id)
 1102    }
 1103}
 1104
 1105#[derive(PartialEq, Eq, PartialOrd, Ord, Debug)]
 1106struct Follower {
 1107    project_id: Option<u64>,
 1108    peer_id: PeerId,
 1109}
 1110
 1111impl AppState {
 1112    #[track_caller]
 1113    pub fn global(cx: &App) -> Arc<Self> {
 1114        cx.global::<GlobalAppState>().0.clone()
 1115    }
 1116    pub fn try_global(cx: &App) -> Option<Arc<Self>> {
 1117        cx.try_global::<GlobalAppState>()
 1118            .map(|state| state.0.clone())
 1119    }
 1120    pub fn set_global(state: Arc<AppState>, cx: &mut App) {
 1121        cx.set_global(GlobalAppState(state));
 1122    }
 1123
 1124    #[cfg(any(test, feature = "test-support"))]
 1125    pub fn test(cx: &mut App) -> Arc<Self> {
 1126        use fs::Fs;
 1127        use node_runtime::NodeRuntime;
 1128        use session::Session;
 1129        use settings::SettingsStore;
 1130
 1131        if !cx.has_global::<SettingsStore>() {
 1132            let settings_store = SettingsStore::test(cx);
 1133            cx.set_global(settings_store);
 1134        }
 1135
 1136        let fs = fs::FakeFs::new(cx.background_executor().clone());
 1137        <dyn Fs>::set_global(fs.clone(), cx);
 1138        let languages = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));
 1139        let clock = Arc::new(clock::FakeSystemClock::new());
 1140        let http_client = http_client::FakeHttpClient::with_404_response();
 1141        let client = Client::new(clock, http_client, cx);
 1142        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 1143        let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
 1144        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 1145
 1146        theme_settings::init(theme::LoadThemes::JustBase, cx);
 1147        client::init(&client, cx);
 1148
 1149        Arc::new(Self {
 1150            client,
 1151            fs,
 1152            languages,
 1153            user_store,
 1154            workspace_store,
 1155            node_runtime: NodeRuntime::unavailable(),
 1156            build_window_options: |_, _| Default::default(),
 1157            session,
 1158        })
 1159    }
 1160}
 1161
 1162struct DelayedDebouncedEditAction {
 1163    task: Option<Task<()>>,
 1164    cancel_channel: Option<oneshot::Sender<()>>,
 1165}
 1166
 1167impl DelayedDebouncedEditAction {
 1168    fn new() -> DelayedDebouncedEditAction {
 1169        DelayedDebouncedEditAction {
 1170            task: None,
 1171            cancel_channel: None,
 1172        }
 1173    }
 1174
 1175    fn fire_new<F>(
 1176        &mut self,
 1177        delay: Duration,
 1178        window: &mut Window,
 1179        cx: &mut Context<Workspace>,
 1180        func: F,
 1181    ) where
 1182        F: 'static
 1183            + Send
 1184            + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> Task<Result<()>>,
 1185    {
 1186        if let Some(channel) = self.cancel_channel.take() {
 1187            _ = channel.send(());
 1188        }
 1189
 1190        let (sender, mut receiver) = oneshot::channel::<()>();
 1191        self.cancel_channel = Some(sender);
 1192
 1193        let previous_task = self.task.take();
 1194        self.task = Some(cx.spawn_in(window, async move |workspace, cx| {
 1195            let mut timer = cx.background_executor().timer(delay).fuse();
 1196            if let Some(previous_task) = previous_task {
 1197                previous_task.await;
 1198            }
 1199
 1200            futures::select_biased! {
 1201                _ = receiver => return,
 1202                    _ = timer => {}
 1203            }
 1204
 1205            if let Some(result) = workspace
 1206                .update_in(cx, |workspace, window, cx| (func)(workspace, window, cx))
 1207                .log_err()
 1208            {
 1209                result.await.log_err();
 1210            }
 1211        }));
 1212    }
 1213}
 1214
 1215pub enum Event {
 1216    PaneAdded(Entity<Pane>),
 1217    PaneRemoved,
 1218    ItemAdded {
 1219        item: Box<dyn ItemHandle>,
 1220    },
 1221    ActiveItemChanged,
 1222    ItemRemoved {
 1223        item_id: EntityId,
 1224    },
 1225    UserSavedItem {
 1226        pane: WeakEntity<Pane>,
 1227        item: Box<dyn WeakItemHandle>,
 1228        save_intent: SaveIntent,
 1229    },
 1230    ContactRequestedJoin(u64),
 1231    WorkspaceCreated(WeakEntity<Workspace>),
 1232    OpenBundledFile {
 1233        text: Cow<'static, str>,
 1234        title: &'static str,
 1235        language: &'static str,
 1236    },
 1237    ZoomChanged,
 1238    ModalOpened,
 1239    Activate,
 1240    PanelAdded(AnyView),
 1241}
 1242
 1243#[derive(Debug, Clone)]
 1244pub enum OpenVisible {
 1245    All,
 1246    None,
 1247    OnlyFiles,
 1248    OnlyDirectories,
 1249}
 1250
 1251enum WorkspaceLocation {
 1252    // Valid local paths or SSH project to serialize
 1253    Location(SerializedWorkspaceLocation, PathList),
 1254    // No valid location found hence clear session id
 1255    DetachFromSession,
 1256    // No valid location found to serialize
 1257    None,
 1258}
 1259
 1260type PromptForNewPath = Box<
 1261    dyn Fn(
 1262        &mut Workspace,
 1263        DirectoryLister,
 1264        Option<String>,
 1265        &mut Window,
 1266        &mut Context<Workspace>,
 1267    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1268>;
 1269
 1270type PromptForOpenPath = Box<
 1271    dyn Fn(
 1272        &mut Workspace,
 1273        DirectoryLister,
 1274        &mut Window,
 1275        &mut Context<Workspace>,
 1276    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1277>;
 1278
 1279#[derive(Default)]
 1280struct DispatchingKeystrokes {
 1281    dispatched: HashSet<Vec<Keystroke>>,
 1282    queue: VecDeque<Keystroke>,
 1283    task: Option<Shared<Task<()>>>,
 1284}
 1285
 1286/// Collects everything project-related for a certain window opened.
 1287/// In some way, is a counterpart of a window, as the [`WindowHandle`] could be downcast into `Workspace`.
 1288///
 1289/// A `Workspace` usually consists of 1 or more projects, a central pane group, 3 docks and a status bar.
 1290/// The `Workspace` owns everybody's state and serves as a default, "global context",
 1291/// that can be used to register a global action to be triggered from any place in the window.
 1292pub struct Workspace {
 1293    weak_self: WeakEntity<Self>,
 1294    workspace_actions: Vec<Box<dyn Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div>>,
 1295    zoomed: Option<AnyWeakView>,
 1296    previous_dock_drag_coordinates: Option<Point<Pixels>>,
 1297    zoomed_position: Option<DockPosition>,
 1298    center: PaneGroup,
 1299    left_dock: Entity<Dock>,
 1300    bottom_dock: Entity<Dock>,
 1301    right_dock: Entity<Dock>,
 1302    panes: Vec<Entity<Pane>>,
 1303    active_worktree_override: Option<WorktreeId>,
 1304    panes_by_item: HashMap<EntityId, WeakEntity<Pane>>,
 1305    active_pane: Entity<Pane>,
 1306    last_active_center_pane: Option<WeakEntity<Pane>>,
 1307    last_active_view_id: Option<proto::ViewId>,
 1308    status_bar: Entity<StatusBar>,
 1309    pub(crate) modal_layer: Entity<ModalLayer>,
 1310    toast_layer: Entity<ToastLayer>,
 1311    titlebar_item: Option<AnyView>,
 1312    notifications: Notifications,
 1313    suppressed_notifications: HashSet<NotificationId>,
 1314    project: Entity<Project>,
 1315    follower_states: HashMap<CollaboratorId, FollowerState>,
 1316    last_leaders_by_pane: HashMap<WeakEntity<Pane>, CollaboratorId>,
 1317    window_edited: bool,
 1318    last_window_title: Option<String>,
 1319    dirty_items: HashMap<EntityId, Subscription>,
 1320    active_call: Option<(GlobalAnyActiveCall, Vec<Subscription>)>,
 1321    leader_updates_tx: mpsc::UnboundedSender<(PeerId, proto::UpdateFollowers)>,
 1322    database_id: Option<WorkspaceId>,
 1323    app_state: Arc<AppState>,
 1324    dispatching_keystrokes: Rc<RefCell<DispatchingKeystrokes>>,
 1325    _subscriptions: Vec<Subscription>,
 1326    _apply_leader_updates: Task<Result<()>>,
 1327    _observe_current_user: Task<Result<()>>,
 1328    _schedule_serialize_workspace: Option<Task<()>>,
 1329    _serialize_workspace_task: Option<Task<()>>,
 1330    _schedule_serialize_ssh_paths: Option<Task<()>>,
 1331    pane_history_timestamp: Arc<AtomicUsize>,
 1332    bounds: Bounds<Pixels>,
 1333    pub centered_layout: bool,
 1334    bounds_save_task_queued: Option<Task<()>>,
 1335    on_prompt_for_new_path: Option<PromptForNewPath>,
 1336    on_prompt_for_open_path: Option<PromptForOpenPath>,
 1337    terminal_provider: Option<Box<dyn TerminalProvider>>,
 1338    debugger_provider: Option<Arc<dyn DebuggerProvider>>,
 1339    serializable_items_tx: UnboundedSender<Box<dyn SerializableItemHandle>>,
 1340    _items_serializer: Task<Result<()>>,
 1341    session_id: Option<String>,
 1342    scheduled_tasks: Vec<Task<()>>,
 1343    last_open_dock_positions: Vec<DockPosition>,
 1344    removing: bool,
 1345    _panels_task: Option<Task<Result<()>>>,
 1346    sidebar_focus_handle: Option<FocusHandle>,
 1347    multi_workspace: Option<WeakEntity<MultiWorkspace>>,
 1348}
 1349
 1350impl EventEmitter<Event> for Workspace {}
 1351
 1352#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
 1353pub struct ViewId {
 1354    pub creator: CollaboratorId,
 1355    pub id: u64,
 1356}
 1357
 1358pub struct FollowerState {
 1359    center_pane: Entity<Pane>,
 1360    dock_pane: Option<Entity<Pane>>,
 1361    active_view_id: Option<ViewId>,
 1362    items_by_leader_view_id: HashMap<ViewId, FollowerView>,
 1363}
 1364
 1365struct FollowerView {
 1366    view: Box<dyn FollowableItemHandle>,
 1367    location: Option<proto::PanelId>,
 1368}
 1369
 1370#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
 1371pub enum OpenMode {
 1372    /// Open the workspace in a new window.
 1373    NewWindow,
 1374    /// Add to the window's multi workspace without activating it (used during deserialization).
 1375    Add,
 1376    /// Add to the window's multi workspace and activate it.
 1377    #[default]
 1378    Activate,
 1379    /// Replace the currently active workspace, and any of it's linked workspaces
 1380    Replace,
 1381}
 1382
 1383impl Workspace {
 1384    pub fn new(
 1385        workspace_id: Option<WorkspaceId>,
 1386        project: Entity<Project>,
 1387        app_state: Arc<AppState>,
 1388        window: &mut Window,
 1389        cx: &mut Context<Self>,
 1390    ) -> Self {
 1391        if let Some(trusted_worktrees) = TrustedWorktrees::try_get_global(cx) {
 1392            cx.subscribe(&trusted_worktrees, |_, worktrees_store, e, cx| {
 1393                if let TrustedWorktreesEvent::Trusted(..) = e {
 1394                    // Do not persist auto trusted worktrees
 1395                    if !ProjectSettings::get_global(cx).session.trust_all_worktrees {
 1396                        worktrees_store.update(cx, |worktrees_store, cx| {
 1397                            worktrees_store.schedule_serialization(
 1398                                cx,
 1399                                |new_trusted_worktrees, cx| {
 1400                                    let timeout =
 1401                                        cx.background_executor().timer(SERIALIZATION_THROTTLE_TIME);
 1402                                    let db = WorkspaceDb::global(cx);
 1403                                    cx.background_spawn(async move {
 1404                                        timeout.await;
 1405                                        db.save_trusted_worktrees(new_trusted_worktrees)
 1406                                            .await
 1407                                            .log_err();
 1408                                    })
 1409                                },
 1410                            )
 1411                        });
 1412                    }
 1413                }
 1414            })
 1415            .detach();
 1416
 1417            cx.observe_global::<SettingsStore>(|_, cx| {
 1418                if ProjectSettings::get_global(cx).session.trust_all_worktrees {
 1419                    if let Some(trusted_worktrees) = TrustedWorktrees::try_get_global(cx) {
 1420                        trusted_worktrees.update(cx, |trusted_worktrees, cx| {
 1421                            trusted_worktrees.auto_trust_all(cx);
 1422                        })
 1423                    }
 1424                }
 1425            })
 1426            .detach();
 1427        }
 1428
 1429        cx.subscribe_in(&project, window, move |this, _, event, window, cx| {
 1430            match event {
 1431                project::Event::RemoteIdChanged(_) => {
 1432                    this.update_window_title(window, cx);
 1433                }
 1434
 1435                project::Event::CollaboratorLeft(peer_id) => {
 1436                    this.collaborator_left(*peer_id, window, cx);
 1437                }
 1438
 1439                &project::Event::WorktreeRemoved(_) => {
 1440                    this.update_window_title(window, cx);
 1441                    this.serialize_workspace(window, cx);
 1442                    this.update_history(cx);
 1443                }
 1444
 1445                &project::Event::WorktreeAdded(id) => {
 1446                    this.update_window_title(window, cx);
 1447                    if this
 1448                        .project()
 1449                        .read(cx)
 1450                        .worktree_for_id(id, cx)
 1451                        .is_some_and(|wt| wt.read(cx).is_visible())
 1452                    {
 1453                        this.serialize_workspace(window, cx);
 1454                        this.update_history(cx);
 1455                    }
 1456                }
 1457                project::Event::WorktreeUpdatedEntries(..) => {
 1458                    this.update_window_title(window, cx);
 1459                    this.serialize_workspace(window, cx);
 1460                }
 1461
 1462                project::Event::DisconnectedFromHost => {
 1463                    this.update_window_edited(window, cx);
 1464                    let leaders_to_unfollow =
 1465                        this.follower_states.keys().copied().collect::<Vec<_>>();
 1466                    for leader_id in leaders_to_unfollow {
 1467                        this.unfollow(leader_id, window, cx);
 1468                    }
 1469                }
 1470
 1471                project::Event::DisconnectedFromRemote {
 1472                    server_not_running: _,
 1473                } => {
 1474                    this.update_window_edited(window, cx);
 1475                }
 1476
 1477                project::Event::Closed => {
 1478                    window.remove_window();
 1479                }
 1480
 1481                project::Event::DeletedEntry(_, entry_id) => {
 1482                    for pane in this.panes.iter() {
 1483                        pane.update(cx, |pane, cx| {
 1484                            pane.handle_deleted_project_item(*entry_id, window, cx)
 1485                        });
 1486                    }
 1487                }
 1488
 1489                project::Event::Toast {
 1490                    notification_id,
 1491                    message,
 1492                    link,
 1493                } => this.show_notification(
 1494                    NotificationId::named(notification_id.clone()),
 1495                    cx,
 1496                    |cx| {
 1497                        let mut notification = MessageNotification::new(message.clone(), cx);
 1498                        if let Some(link) = link {
 1499                            notification = notification
 1500                                .more_info_message(link.label)
 1501                                .more_info_url(link.url);
 1502                        }
 1503
 1504                        cx.new(|_| notification)
 1505                    },
 1506                ),
 1507
 1508                project::Event::HideToast { notification_id } => {
 1509                    this.dismiss_notification(&NotificationId::named(notification_id.clone()), cx)
 1510                }
 1511
 1512                project::Event::LanguageServerPrompt(request) => {
 1513                    struct LanguageServerPrompt;
 1514
 1515                    this.show_notification(
 1516                        NotificationId::composite::<LanguageServerPrompt>(request.id),
 1517                        cx,
 1518                        |cx| {
 1519                            cx.new(|cx| {
 1520                                notifications::LanguageServerPrompt::new(request.clone(), cx)
 1521                            })
 1522                        },
 1523                    );
 1524                }
 1525
 1526                project::Event::AgentLocationChanged => {
 1527                    this.handle_agent_location_changed(window, cx)
 1528                }
 1529
 1530                _ => {}
 1531            }
 1532            cx.notify()
 1533        })
 1534        .detach();
 1535
 1536        cx.subscribe_in(
 1537            &project.read(cx).breakpoint_store(),
 1538            window,
 1539            |workspace, _, event, window, cx| match event {
 1540                BreakpointStoreEvent::BreakpointsUpdated(_, _)
 1541                | BreakpointStoreEvent::BreakpointsCleared(_) => {
 1542                    workspace.serialize_workspace(window, cx);
 1543                }
 1544                BreakpointStoreEvent::SetDebugLine | BreakpointStoreEvent::ClearDebugLines => {}
 1545            },
 1546        )
 1547        .detach();
 1548        if let Some(toolchain_store) = project.read(cx).toolchain_store() {
 1549            cx.subscribe_in(
 1550                &toolchain_store,
 1551                window,
 1552                |workspace, _, event, window, cx| match event {
 1553                    ToolchainStoreEvent::CustomToolchainsModified => {
 1554                        workspace.serialize_workspace(window, cx);
 1555                    }
 1556                    _ => {}
 1557                },
 1558            )
 1559            .detach();
 1560        }
 1561
 1562        cx.on_focus_lost(window, |this, window, cx| {
 1563            let focus_handle = this.focus_handle(cx);
 1564            window.focus(&focus_handle, cx);
 1565        })
 1566        .detach();
 1567
 1568        let weak_handle = cx.entity().downgrade();
 1569        let pane_history_timestamp = Arc::new(AtomicUsize::new(0));
 1570
 1571        let center_pane = cx.new(|cx| {
 1572            let mut center_pane = Pane::new(
 1573                weak_handle.clone(),
 1574                project.clone(),
 1575                pane_history_timestamp.clone(),
 1576                None,
 1577                NewFile.boxed_clone(),
 1578                true,
 1579                window,
 1580                cx,
 1581            );
 1582            center_pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 1583            center_pane.set_should_display_welcome_page(true);
 1584            center_pane
 1585        });
 1586        cx.subscribe_in(&center_pane, window, Self::handle_pane_event)
 1587            .detach();
 1588
 1589        window.focus(&center_pane.focus_handle(cx), cx);
 1590
 1591        cx.emit(Event::PaneAdded(center_pane.clone()));
 1592
 1593        let any_window_handle = window.window_handle();
 1594        app_state.workspace_store.update(cx, |store, _| {
 1595            store
 1596                .workspaces
 1597                .insert((any_window_handle, weak_handle.clone()));
 1598        });
 1599
 1600        let mut current_user = app_state.user_store.read(cx).watch_current_user();
 1601        let mut connection_status = app_state.client.status();
 1602        let _observe_current_user = cx.spawn_in(window, async move |this, cx| {
 1603            current_user.next().await;
 1604            connection_status.next().await;
 1605            let mut stream =
 1606                Stream::map(current_user, drop).merge(Stream::map(connection_status, drop));
 1607
 1608            while stream.recv().await.is_some() {
 1609                this.update(cx, |_, cx| cx.notify())?;
 1610            }
 1611            anyhow::Ok(())
 1612        });
 1613
 1614        // All leader updates are enqueued and then processed in a single task, so
 1615        // that each asynchronous operation can be run in order.
 1616        let (leader_updates_tx, mut leader_updates_rx) =
 1617            mpsc::unbounded::<(PeerId, proto::UpdateFollowers)>();
 1618        let _apply_leader_updates = cx.spawn_in(window, async move |this, cx| {
 1619            while let Some((leader_id, update)) = leader_updates_rx.next().await {
 1620                Self::process_leader_update(&this, leader_id, update, cx)
 1621                    .await
 1622                    .log_err();
 1623            }
 1624
 1625            Ok(())
 1626        });
 1627
 1628        cx.emit(Event::WorkspaceCreated(weak_handle.clone()));
 1629        let modal_layer = cx.new(|_| ModalLayer::new());
 1630        let toast_layer = cx.new(|_| ToastLayer::new());
 1631        cx.subscribe(
 1632            &modal_layer,
 1633            |_, _, _: &modal_layer::ModalOpenedEvent, cx| {
 1634                cx.emit(Event::ModalOpened);
 1635            },
 1636        )
 1637        .detach();
 1638
 1639        let left_dock = Dock::new(DockPosition::Left, modal_layer.clone(), window, cx);
 1640        let bottom_dock = Dock::new(DockPosition::Bottom, modal_layer.clone(), window, cx);
 1641        let right_dock = Dock::new(DockPosition::Right, modal_layer.clone(), window, cx);
 1642        let left_dock_buttons = cx.new(|cx| PanelButtons::new(left_dock.clone(), cx));
 1643        let bottom_dock_buttons = cx.new(|cx| PanelButtons::new(bottom_dock.clone(), cx));
 1644        let right_dock_buttons = cx.new(|cx| PanelButtons::new(right_dock.clone(), cx));
 1645        let multi_workspace = window
 1646            .root::<MultiWorkspace>()
 1647            .flatten()
 1648            .map(|mw| mw.downgrade());
 1649        let status_bar = cx.new(|cx| {
 1650            let mut status_bar =
 1651                StatusBar::new(&center_pane.clone(), multi_workspace.clone(), window, cx);
 1652            status_bar.add_left_item(left_dock_buttons, window, cx);
 1653            status_bar.add_right_item(right_dock_buttons, window, cx);
 1654            status_bar.add_right_item(bottom_dock_buttons, window, cx);
 1655            status_bar
 1656        });
 1657
 1658        let session_id = app_state.session.read(cx).id().to_owned();
 1659
 1660        let mut active_call = None;
 1661        if let Some(call) = GlobalAnyActiveCall::try_global(cx).cloned() {
 1662            let subscriptions =
 1663                vec![
 1664                    call.0
 1665                        .subscribe(window, cx, Box::new(Self::on_active_call_event)),
 1666                ];
 1667            active_call = Some((call, subscriptions));
 1668        }
 1669
 1670        let (serializable_items_tx, serializable_items_rx) =
 1671            mpsc::unbounded::<Box<dyn SerializableItemHandle>>();
 1672        let _items_serializer = cx.spawn_in(window, async move |this, cx| {
 1673            Self::serialize_items(&this, serializable_items_rx, cx).await
 1674        });
 1675
 1676        let subscriptions = vec![
 1677            cx.observe_window_activation(window, Self::on_window_activation_changed),
 1678            cx.observe_window_bounds(window, move |this, window, cx| {
 1679                if this.bounds_save_task_queued.is_some() {
 1680                    return;
 1681                }
 1682                this.bounds_save_task_queued = Some(cx.spawn_in(window, async move |this, cx| {
 1683                    cx.background_executor()
 1684                        .timer(Duration::from_millis(100))
 1685                        .await;
 1686                    this.update_in(cx, |this, window, cx| {
 1687                        this.save_window_bounds(window, cx).detach();
 1688                        this.bounds_save_task_queued.take();
 1689                    })
 1690                    .ok();
 1691                }));
 1692                cx.notify();
 1693            }),
 1694            cx.observe_window_appearance(window, |_, window, cx| {
 1695                let window_appearance = window.appearance();
 1696
 1697                *SystemAppearance::global_mut(cx) = SystemAppearance(window_appearance.into());
 1698
 1699                theme_settings::reload_theme(cx);
 1700                theme_settings::reload_icon_theme(cx);
 1701            }),
 1702            cx.on_release({
 1703                let weak_handle = weak_handle.clone();
 1704                move |this, cx| {
 1705                    this.app_state.workspace_store.update(cx, move |store, _| {
 1706                        store.workspaces.retain(|(_, weak)| weak != &weak_handle);
 1707                    })
 1708                }
 1709            }),
 1710        ];
 1711
 1712        cx.defer_in(window, move |this, window, cx| {
 1713            this.update_window_title(window, cx);
 1714            this.show_initial_notifications(cx);
 1715        });
 1716
 1717        let mut center = PaneGroup::new(center_pane.clone());
 1718        center.set_is_center(true);
 1719        center.mark_positions(cx);
 1720
 1721        Workspace {
 1722            weak_self: weak_handle.clone(),
 1723            zoomed: None,
 1724            zoomed_position: None,
 1725            previous_dock_drag_coordinates: None,
 1726            center,
 1727            panes: vec![center_pane.clone()],
 1728            panes_by_item: Default::default(),
 1729            active_pane: center_pane.clone(),
 1730            last_active_center_pane: Some(center_pane.downgrade()),
 1731            last_active_view_id: None,
 1732            status_bar,
 1733            modal_layer,
 1734            toast_layer,
 1735            titlebar_item: None,
 1736            active_worktree_override: None,
 1737            notifications: Notifications::default(),
 1738            suppressed_notifications: HashSet::default(),
 1739            left_dock,
 1740            bottom_dock,
 1741            right_dock,
 1742            _panels_task: None,
 1743            project: project.clone(),
 1744            follower_states: Default::default(),
 1745            last_leaders_by_pane: Default::default(),
 1746            dispatching_keystrokes: Default::default(),
 1747            window_edited: false,
 1748            last_window_title: None,
 1749            dirty_items: Default::default(),
 1750            active_call,
 1751            database_id: workspace_id,
 1752            app_state,
 1753            _observe_current_user,
 1754            _apply_leader_updates,
 1755            _schedule_serialize_workspace: None,
 1756            _serialize_workspace_task: None,
 1757            _schedule_serialize_ssh_paths: None,
 1758            leader_updates_tx,
 1759            _subscriptions: subscriptions,
 1760            pane_history_timestamp,
 1761            workspace_actions: Default::default(),
 1762            // This data will be incorrect, but it will be overwritten by the time it needs to be used.
 1763            bounds: Default::default(),
 1764            centered_layout: false,
 1765            bounds_save_task_queued: None,
 1766            on_prompt_for_new_path: None,
 1767            on_prompt_for_open_path: None,
 1768            terminal_provider: None,
 1769            debugger_provider: None,
 1770            serializable_items_tx,
 1771            _items_serializer,
 1772            session_id: Some(session_id),
 1773
 1774            scheduled_tasks: Vec::new(),
 1775            last_open_dock_positions: Vec::new(),
 1776            removing: false,
 1777            sidebar_focus_handle: None,
 1778            multi_workspace,
 1779        }
 1780    }
 1781
 1782    pub fn new_local(
 1783        abs_paths: Vec<PathBuf>,
 1784        app_state: Arc<AppState>,
 1785        requesting_window: Option<WindowHandle<MultiWorkspace>>,
 1786        env: Option<HashMap<String, String>>,
 1787        init: Option<Box<dyn FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send>>,
 1788        open_mode: OpenMode,
 1789        cx: &mut App,
 1790    ) -> Task<anyhow::Result<OpenResult>> {
 1791        let project_handle = Project::local(
 1792            app_state.client.clone(),
 1793            app_state.node_runtime.clone(),
 1794            app_state.user_store.clone(),
 1795            app_state.languages.clone(),
 1796            app_state.fs.clone(),
 1797            env,
 1798            Default::default(),
 1799            cx,
 1800        );
 1801
 1802        let db = WorkspaceDb::global(cx);
 1803        let kvp = db::kvp::KeyValueStore::global(cx);
 1804        cx.spawn(async move |cx| {
 1805            let mut paths_to_open = Vec::with_capacity(abs_paths.len());
 1806            for path in abs_paths.into_iter() {
 1807                if let Some(canonical) = app_state.fs.canonicalize(&path).await.ok() {
 1808                    paths_to_open.push(canonical)
 1809                } else {
 1810                    paths_to_open.push(path)
 1811                }
 1812            }
 1813
 1814            let serialized_workspace = db.workspace_for_roots(paths_to_open.as_slice());
 1815
 1816            if let Some(paths) = serialized_workspace.as_ref().map(|ws| &ws.paths) {
 1817                paths_to_open = paths.ordered_paths().cloned().collect();
 1818                if !paths.is_lexicographically_ordered() {
 1819                    project_handle.update(cx, |project, cx| {
 1820                        project.set_worktrees_reordered(true, cx);
 1821                    });
 1822                }
 1823            }
 1824
 1825            // Get project paths for all of the abs_paths
 1826            let mut project_paths: Vec<(PathBuf, Option<ProjectPath>)> =
 1827                Vec::with_capacity(paths_to_open.len());
 1828
 1829            for path in paths_to_open.into_iter() {
 1830                if let Some((_, project_entry)) = cx
 1831                    .update(|cx| {
 1832                        Workspace::project_path_for_path(project_handle.clone(), &path, true, cx)
 1833                    })
 1834                    .await
 1835                    .log_err()
 1836                {
 1837                    project_paths.push((path, Some(project_entry)));
 1838                } else {
 1839                    project_paths.push((path, None));
 1840                }
 1841            }
 1842
 1843            let workspace_id = if let Some(serialized_workspace) = serialized_workspace.as_ref() {
 1844                serialized_workspace.id
 1845            } else {
 1846                db.next_id().await.unwrap_or_else(|_| Default::default())
 1847            };
 1848
 1849            let toolchains = db.toolchains(workspace_id).await?;
 1850
 1851            for (toolchain, worktree_path, path) in toolchains {
 1852                let toolchain_path = PathBuf::from(toolchain.path.clone().to_string());
 1853                let Some(worktree_id) = project_handle.read_with(cx, |this, cx| {
 1854                    this.find_worktree(&worktree_path, cx)
 1855                        .and_then(|(worktree, rel_path)| {
 1856                            if rel_path.is_empty() {
 1857                                Some(worktree.read(cx).id())
 1858                            } else {
 1859                                None
 1860                            }
 1861                        })
 1862                }) else {
 1863                    // We did not find a worktree with a given path, but that's whatever.
 1864                    continue;
 1865                };
 1866                if !app_state.fs.is_file(toolchain_path.as_path()).await {
 1867                    continue;
 1868                }
 1869
 1870                project_handle
 1871                    .update(cx, |this, cx| {
 1872                        this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 1873                    })
 1874                    .await;
 1875            }
 1876            if let Some(workspace) = serialized_workspace.as_ref() {
 1877                project_handle.update(cx, |this, cx| {
 1878                    for (scope, toolchains) in &workspace.user_toolchains {
 1879                        for toolchain in toolchains {
 1880                            this.add_toolchain(toolchain.clone(), scope.clone(), cx);
 1881                        }
 1882                    }
 1883                });
 1884            }
 1885
 1886            let window_to_replace = match open_mode {
 1887                OpenMode::NewWindow => None,
 1888                _ => requesting_window,
 1889            };
 1890
 1891            let (window, workspace): (WindowHandle<MultiWorkspace>, Entity<Workspace>) =
 1892                if let Some(window) = window_to_replace {
 1893                    let centered_layout = serialized_workspace
 1894                        .as_ref()
 1895                        .map(|w| w.centered_layout)
 1896                        .unwrap_or(false);
 1897
 1898                    let workspace = window.update(cx, |multi_workspace, window, cx| {
 1899                        let workspace = cx.new(|cx| {
 1900                            let mut workspace = Workspace::new(
 1901                                Some(workspace_id),
 1902                                project_handle.clone(),
 1903                                app_state.clone(),
 1904                                window,
 1905                                cx,
 1906                            );
 1907
 1908                            workspace.centered_layout = centered_layout;
 1909
 1910                            // Call init callback to add items before window renders
 1911                            if let Some(init) = init {
 1912                                init(&mut workspace, window, cx);
 1913                            }
 1914
 1915                            workspace
 1916                        });
 1917                        match open_mode {
 1918                            OpenMode::Replace => {
 1919                                multi_workspace.replace(workspace.clone(), &*window, cx);
 1920                            }
 1921                            OpenMode::Activate => {
 1922                                multi_workspace.activate(workspace.clone(), window, cx);
 1923                            }
 1924                            OpenMode::Add => {
 1925                                multi_workspace.add(workspace.clone(), &*window, cx);
 1926                            }
 1927                            OpenMode::NewWindow => {
 1928                                unreachable!()
 1929                            }
 1930                        }
 1931                        workspace
 1932                    })?;
 1933                    (window, workspace)
 1934                } else {
 1935                    let window_bounds_override = window_bounds_env_override();
 1936
 1937                    let (window_bounds, display) = if let Some(bounds) = window_bounds_override {
 1938                        (Some(WindowBounds::Windowed(bounds)), None)
 1939                    } else if let Some(workspace) = serialized_workspace.as_ref()
 1940                        && let Some(display) = workspace.display
 1941                        && let Some(bounds) = workspace.window_bounds.as_ref()
 1942                    {
 1943                        // Reopening an existing workspace - restore its saved bounds
 1944                        (Some(bounds.0), Some(display))
 1945                    } else if let Some((display, bounds)) =
 1946                        persistence::read_default_window_bounds(&kvp)
 1947                    {
 1948                        // New or empty workspace - use the last known window bounds
 1949                        (Some(bounds), Some(display))
 1950                    } else {
 1951                        // New window - let GPUI's default_bounds() handle cascading
 1952                        (None, None)
 1953                    };
 1954
 1955                    // Use the serialized workspace to construct the new window
 1956                    let mut options = cx.update(|cx| (app_state.build_window_options)(display, cx));
 1957                    options.window_bounds = window_bounds;
 1958                    let centered_layout = serialized_workspace
 1959                        .as_ref()
 1960                        .map(|w| w.centered_layout)
 1961                        .unwrap_or(false);
 1962                    let window = cx.open_window(options, {
 1963                        let app_state = app_state.clone();
 1964                        let project_handle = project_handle.clone();
 1965                        move |window, cx| {
 1966                            let workspace = cx.new(|cx| {
 1967                                let mut workspace = Workspace::new(
 1968                                    Some(workspace_id),
 1969                                    project_handle,
 1970                                    app_state,
 1971                                    window,
 1972                                    cx,
 1973                                );
 1974                                workspace.centered_layout = centered_layout;
 1975
 1976                                // Call init callback to add items before window renders
 1977                                if let Some(init) = init {
 1978                                    init(&mut workspace, window, cx);
 1979                                }
 1980
 1981                                workspace
 1982                            });
 1983                            cx.new(|cx| MultiWorkspace::new(workspace, window, cx))
 1984                        }
 1985                    })?;
 1986                    let workspace =
 1987                        window.update(cx, |multi_workspace: &mut MultiWorkspace, _, _cx| {
 1988                            multi_workspace.workspace().clone()
 1989                        })?;
 1990                    (window, workspace)
 1991                };
 1992
 1993            notify_if_database_failed(window, cx);
 1994            // Check if this is an empty workspace (no paths to open)
 1995            // An empty workspace is one where project_paths is empty
 1996            let is_empty_workspace = project_paths.is_empty();
 1997            // Check if serialized workspace has paths before it's moved
 1998            let serialized_workspace_has_paths = serialized_workspace
 1999                .as_ref()
 2000                .map(|ws| !ws.paths.is_empty())
 2001                .unwrap_or(false);
 2002
 2003            let opened_items = window
 2004                .update(cx, |_, window, cx| {
 2005                    workspace.update(cx, |_workspace: &mut Workspace, cx| {
 2006                        open_items(serialized_workspace, project_paths, window, cx)
 2007                    })
 2008                })?
 2009                .await
 2010                .unwrap_or_default();
 2011
 2012            // Restore default dock state for empty workspaces
 2013            // Only restore if:
 2014            // 1. This is an empty workspace (no paths), AND
 2015            // 2. The serialized workspace either doesn't exist or has no paths
 2016            if is_empty_workspace && !serialized_workspace_has_paths {
 2017                if let Some(default_docks) = persistence::read_default_dock_state(&kvp) {
 2018                    window
 2019                        .update(cx, |_, window, cx| {
 2020                            workspace.update(cx, |workspace, cx| {
 2021                                for (dock, serialized_dock) in [
 2022                                    (&workspace.right_dock, &default_docks.right),
 2023                                    (&workspace.left_dock, &default_docks.left),
 2024                                    (&workspace.bottom_dock, &default_docks.bottom),
 2025                                ] {
 2026                                    dock.update(cx, |dock, cx| {
 2027                                        dock.serialized_dock = Some(serialized_dock.clone());
 2028                                        dock.restore_state(window, cx);
 2029                                    });
 2030                                }
 2031                                cx.notify();
 2032                            });
 2033                        })
 2034                        .log_err();
 2035                }
 2036            }
 2037
 2038            window
 2039                .update(cx, |_, _window, cx| {
 2040                    workspace.update(cx, |this: &mut Workspace, cx| {
 2041                        this.update_history(cx);
 2042                    });
 2043                })
 2044                .log_err();
 2045            Ok(OpenResult {
 2046                window,
 2047                workspace,
 2048                opened_items,
 2049            })
 2050        })
 2051    }
 2052
 2053    pub fn weak_handle(&self) -> WeakEntity<Self> {
 2054        self.weak_self.clone()
 2055    }
 2056
 2057    pub fn left_dock(&self) -> &Entity<Dock> {
 2058        &self.left_dock
 2059    }
 2060
 2061    pub fn bottom_dock(&self) -> &Entity<Dock> {
 2062        &self.bottom_dock
 2063    }
 2064
 2065    pub fn set_bottom_dock_layout(
 2066        &mut self,
 2067        layout: BottomDockLayout,
 2068        window: &mut Window,
 2069        cx: &mut Context<Self>,
 2070    ) {
 2071        let fs = self.project().read(cx).fs();
 2072        settings::update_settings_file(fs.clone(), cx, move |content, _cx| {
 2073            content.workspace.bottom_dock_layout = Some(layout);
 2074        });
 2075
 2076        cx.notify();
 2077        self.serialize_workspace(window, cx);
 2078    }
 2079
 2080    pub fn right_dock(&self) -> &Entity<Dock> {
 2081        &self.right_dock
 2082    }
 2083
 2084    pub fn all_docks(&self) -> [&Entity<Dock>; 3] {
 2085        [&self.left_dock, &self.bottom_dock, &self.right_dock]
 2086    }
 2087
 2088    pub fn capture_dock_state(&self, _window: &Window, cx: &App) -> DockStructure {
 2089        let left_dock = self.left_dock.read(cx);
 2090        let left_visible = left_dock.is_open();
 2091        let left_active_panel = left_dock
 2092            .active_panel()
 2093            .map(|panel| panel.persistent_name().to_string());
 2094        // `zoomed_position` is kept in sync with individual panel zoom state
 2095        // by the dock code in `Dock::new` and `Dock::add_panel`.
 2096        let left_dock_zoom = self.zoomed_position == Some(DockPosition::Left);
 2097
 2098        let right_dock = self.right_dock.read(cx);
 2099        let right_visible = right_dock.is_open();
 2100        let right_active_panel = right_dock
 2101            .active_panel()
 2102            .map(|panel| panel.persistent_name().to_string());
 2103        let right_dock_zoom = self.zoomed_position == Some(DockPosition::Right);
 2104
 2105        let bottom_dock = self.bottom_dock.read(cx);
 2106        let bottom_visible = bottom_dock.is_open();
 2107        let bottom_active_panel = bottom_dock
 2108            .active_panel()
 2109            .map(|panel| panel.persistent_name().to_string());
 2110        let bottom_dock_zoom = self.zoomed_position == Some(DockPosition::Bottom);
 2111
 2112        DockStructure {
 2113            left: DockData {
 2114                visible: left_visible,
 2115                active_panel: left_active_panel,
 2116                zoom: left_dock_zoom,
 2117            },
 2118            right: DockData {
 2119                visible: right_visible,
 2120                active_panel: right_active_panel,
 2121                zoom: right_dock_zoom,
 2122            },
 2123            bottom: DockData {
 2124                visible: bottom_visible,
 2125                active_panel: bottom_active_panel,
 2126                zoom: bottom_dock_zoom,
 2127            },
 2128        }
 2129    }
 2130
 2131    pub fn set_dock_structure(
 2132        &self,
 2133        docks: DockStructure,
 2134        window: &mut Window,
 2135        cx: &mut Context<Self>,
 2136    ) {
 2137        for (dock, data) in [
 2138            (&self.left_dock, docks.left),
 2139            (&self.bottom_dock, docks.bottom),
 2140            (&self.right_dock, docks.right),
 2141        ] {
 2142            dock.update(cx, |dock, cx| {
 2143                dock.serialized_dock = Some(data);
 2144                dock.restore_state(window, cx);
 2145            });
 2146        }
 2147    }
 2148
 2149    pub fn open_item_abs_paths(&self, cx: &App) -> Vec<PathBuf> {
 2150        self.items(cx)
 2151            .filter_map(|item| {
 2152                let project_path = item.project_path(cx)?;
 2153                self.project.read(cx).absolute_path(&project_path, cx)
 2154            })
 2155            .collect()
 2156    }
 2157
 2158    pub fn dock_at_position(&self, position: DockPosition) -> &Entity<Dock> {
 2159        match position {
 2160            DockPosition::Left => &self.left_dock,
 2161            DockPosition::Bottom => &self.bottom_dock,
 2162            DockPosition::Right => &self.right_dock,
 2163        }
 2164    }
 2165
 2166    pub fn agent_panel_position(&self, cx: &App) -> Option<DockPosition> {
 2167        self.all_docks().into_iter().find_map(|dock| {
 2168            let dock = dock.read(cx);
 2169            dock.has_agent_panel(cx).then_some(dock.position())
 2170        })
 2171    }
 2172
 2173    pub fn panel_size_state<T: Panel>(&self, cx: &App) -> Option<dock::PanelSizeState> {
 2174        self.all_docks().into_iter().find_map(|dock| {
 2175            let dock = dock.read(cx);
 2176            let panel = dock.panel::<T>()?;
 2177            dock.stored_panel_size_state(&panel)
 2178        })
 2179    }
 2180
 2181    pub fn persisted_panel_size_state(
 2182        &self,
 2183        panel_key: &'static str,
 2184        cx: &App,
 2185    ) -> Option<dock::PanelSizeState> {
 2186        dock::Dock::load_persisted_size_state(self, panel_key, cx)
 2187    }
 2188
 2189    pub fn persist_panel_size_state(
 2190        &self,
 2191        panel_key: &str,
 2192        size_state: dock::PanelSizeState,
 2193        cx: &mut App,
 2194    ) {
 2195        let Some(workspace_id) = self
 2196            .database_id()
 2197            .map(|id| i64::from(id).to_string())
 2198            .or(self.session_id())
 2199        else {
 2200            return;
 2201        };
 2202
 2203        let kvp = db::kvp::KeyValueStore::global(cx);
 2204        let panel_key = panel_key.to_string();
 2205        cx.background_spawn(async move {
 2206            let scope = kvp.scoped(dock::PANEL_SIZE_STATE_KEY);
 2207            scope
 2208                .write(
 2209                    format!("{workspace_id}:{panel_key}"),
 2210                    serde_json::to_string(&size_state)?,
 2211                )
 2212                .await
 2213        })
 2214        .detach_and_log_err(cx);
 2215    }
 2216
 2217    pub fn set_panel_size_state<T: Panel>(
 2218        &mut self,
 2219        size_state: dock::PanelSizeState,
 2220        window: &mut Window,
 2221        cx: &mut Context<Self>,
 2222    ) -> bool {
 2223        let Some(panel) = self.panel::<T>(cx) else {
 2224            return false;
 2225        };
 2226
 2227        let dock = self.dock_at_position(panel.position(window, cx));
 2228        let did_set = dock.update(cx, |dock, cx| {
 2229            dock.set_panel_size_state(&panel, size_state, cx)
 2230        });
 2231
 2232        if did_set {
 2233            self.persist_panel_size_state(T::panel_key(), size_state, cx);
 2234        }
 2235
 2236        did_set
 2237    }
 2238
 2239    pub fn toggle_dock_panel_flexible_size(
 2240        &self,
 2241        dock: &Entity<Dock>,
 2242        panel: &dyn PanelHandle,
 2243        window: &mut Window,
 2244        cx: &mut App,
 2245    ) {
 2246        let position = dock.read(cx).position();
 2247        let current_size = self.dock_size(&dock.read(cx), window, cx);
 2248        let current_flex =
 2249            current_size.and_then(|size| self.dock_flex_for_size(position, size, window, cx));
 2250        dock.update(cx, |dock, cx| {
 2251            dock.toggle_panel_flexible_size(panel, current_size, current_flex, window, cx);
 2252        });
 2253    }
 2254
 2255    fn dock_size(&self, dock: &Dock, window: &Window, cx: &App) -> Option<Pixels> {
 2256        let panel = dock.active_panel()?;
 2257        let size_state = dock
 2258            .stored_panel_size_state(panel.as_ref())
 2259            .unwrap_or_default();
 2260        let position = dock.position();
 2261
 2262        let use_flex = panel.has_flexible_size(window, cx);
 2263
 2264        if position.axis() == Axis::Horizontal
 2265            && use_flex
 2266            && let Some(flex) = size_state.flex.or_else(|| self.default_dock_flex(position))
 2267        {
 2268            let workspace_width = self.bounds.size.width;
 2269            if workspace_width <= Pixels::ZERO {
 2270                return None;
 2271            }
 2272            let flex = flex.max(0.001);
 2273            let opposite = self.opposite_dock_panel_and_size_state(position, window, cx);
 2274            if let Some(opposite_flex) = opposite.as_ref().and_then(|(_, s)| s.flex) {
 2275                // Both docks are flex items sharing the full workspace width.
 2276                let total_flex = flex + 1.0 + opposite_flex;
 2277                return Some((flex / total_flex * workspace_width).max(RESIZE_HANDLE_SIZE));
 2278            } else {
 2279                // Opposite dock is fixed-width; flex items share (W - fixed).
 2280                let opposite_fixed = opposite
 2281                    .map(|(panel, s)| s.size.unwrap_or_else(|| panel.default_size(window, cx)))
 2282                    .unwrap_or_default();
 2283                let available = (workspace_width - opposite_fixed).max(RESIZE_HANDLE_SIZE);
 2284                return Some((flex / (flex + 1.0) * available).max(RESIZE_HANDLE_SIZE));
 2285            }
 2286        }
 2287
 2288        Some(
 2289            size_state
 2290                .size
 2291                .unwrap_or_else(|| panel.default_size(window, cx)),
 2292        )
 2293    }
 2294
 2295    pub fn dock_flex_for_size(
 2296        &self,
 2297        position: DockPosition,
 2298        size: Pixels,
 2299        window: &Window,
 2300        cx: &App,
 2301    ) -> Option<f32> {
 2302        if position.axis() != Axis::Horizontal {
 2303            return None;
 2304        }
 2305
 2306        let workspace_width = self.bounds.size.width;
 2307        if workspace_width <= Pixels::ZERO {
 2308            return None;
 2309        }
 2310
 2311        let opposite = self.opposite_dock_panel_and_size_state(position, window, cx);
 2312        if let Some(opposite_flex) = opposite.as_ref().and_then(|(_, s)| s.flex) {
 2313            let size = size.clamp(px(0.), workspace_width - px(1.));
 2314            Some((size * (1.0 + opposite_flex) / (workspace_width - size)).max(0.0))
 2315        } else {
 2316            let opposite_width = opposite
 2317                .map(|(panel, s)| s.size.unwrap_or_else(|| panel.default_size(window, cx)))
 2318                .unwrap_or_default();
 2319            let available = (workspace_width - opposite_width).max(RESIZE_HANDLE_SIZE);
 2320            let remaining = (available - size).max(px(1.));
 2321            Some((size / remaining).max(0.0))
 2322        }
 2323    }
 2324
 2325    fn opposite_dock_panel_and_size_state(
 2326        &self,
 2327        position: DockPosition,
 2328        window: &Window,
 2329        cx: &App,
 2330    ) -> Option<(Arc<dyn PanelHandle>, PanelSizeState)> {
 2331        let opposite_position = match position {
 2332            DockPosition::Left => DockPosition::Right,
 2333            DockPosition::Right => DockPosition::Left,
 2334            DockPosition::Bottom => return None,
 2335        };
 2336
 2337        let opposite_dock = self.dock_at_position(opposite_position).read(cx);
 2338        let panel = opposite_dock.visible_panel()?;
 2339        let mut size_state = opposite_dock
 2340            .stored_panel_size_state(panel.as_ref())
 2341            .unwrap_or_default();
 2342        if size_state.flex.is_none() && panel.has_flexible_size(window, cx) {
 2343            size_state.flex = self.default_dock_flex(opposite_position);
 2344        }
 2345        Some((panel.clone(), size_state))
 2346    }
 2347
 2348    pub fn default_dock_flex(&self, position: DockPosition) -> Option<f32> {
 2349        if position.axis() != Axis::Horizontal {
 2350            return None;
 2351        }
 2352
 2353        let pane = self.last_active_center_pane.clone()?.upgrade()?;
 2354        Some(self.center.width_fraction_for_pane(&pane).unwrap_or(1.0))
 2355    }
 2356
 2357    pub fn is_edited(&self) -> bool {
 2358        self.window_edited
 2359    }
 2360
 2361    pub fn add_panel<T: Panel>(
 2362        &mut self,
 2363        panel: Entity<T>,
 2364        window: &mut Window,
 2365        cx: &mut Context<Self>,
 2366    ) {
 2367        let focus_handle = panel.panel_focus_handle(cx);
 2368        cx.on_focus_in(&focus_handle, window, Self::handle_panel_focused)
 2369            .detach();
 2370
 2371        let dock_position = panel.position(window, cx);
 2372        let dock = self.dock_at_position(dock_position);
 2373        let any_panel = panel.to_any();
 2374        let persisted_size_state =
 2375            self.persisted_panel_size_state(T::panel_key(), cx)
 2376                .or_else(|| {
 2377                    load_legacy_panel_size(T::panel_key(), dock_position, self, cx).map(|size| {
 2378                        let state = dock::PanelSizeState {
 2379                            size: Some(size),
 2380                            flex: None,
 2381                        };
 2382                        self.persist_panel_size_state(T::panel_key(), state, cx);
 2383                        state
 2384                    })
 2385                });
 2386
 2387        dock.update(cx, |dock, cx| {
 2388            let index = dock.add_panel(panel.clone(), self.weak_self.clone(), window, cx);
 2389            if let Some(size_state) = persisted_size_state {
 2390                dock.set_panel_size_state(&panel, size_state, cx);
 2391            }
 2392            index
 2393        });
 2394
 2395        cx.emit(Event::PanelAdded(any_panel));
 2396    }
 2397
 2398    pub fn remove_panel<T: Panel>(
 2399        &mut self,
 2400        panel: &Entity<T>,
 2401        window: &mut Window,
 2402        cx: &mut Context<Self>,
 2403    ) {
 2404        for dock in [&self.left_dock, &self.bottom_dock, &self.right_dock] {
 2405            dock.update(cx, |dock, cx| dock.remove_panel(panel, window, cx));
 2406        }
 2407    }
 2408
 2409    pub fn status_bar(&self) -> &Entity<StatusBar> {
 2410        &self.status_bar
 2411    }
 2412
 2413    pub fn set_sidebar_focus_handle(&mut self, handle: Option<FocusHandle>) {
 2414        self.sidebar_focus_handle = handle;
 2415    }
 2416
 2417    pub fn status_bar_visible(&self, cx: &App) -> bool {
 2418        StatusBarSettings::get_global(cx).show
 2419    }
 2420
 2421    pub fn multi_workspace(&self) -> Option<&WeakEntity<MultiWorkspace>> {
 2422        self.multi_workspace.as_ref()
 2423    }
 2424
 2425    pub fn set_multi_workspace(
 2426        &mut self,
 2427        multi_workspace: WeakEntity<MultiWorkspace>,
 2428        cx: &mut App,
 2429    ) {
 2430        self.status_bar.update(cx, |status_bar, cx| {
 2431            status_bar.set_multi_workspace(multi_workspace.clone(), cx);
 2432        });
 2433        self.multi_workspace = Some(multi_workspace);
 2434    }
 2435
 2436    pub fn app_state(&self) -> &Arc<AppState> {
 2437        &self.app_state
 2438    }
 2439
 2440    pub fn set_panels_task(&mut self, task: Task<Result<()>>) {
 2441        self._panels_task = Some(task);
 2442    }
 2443
 2444    pub fn take_panels_task(&mut self) -> Option<Task<Result<()>>> {
 2445        self._panels_task.take()
 2446    }
 2447
 2448    pub fn user_store(&self) -> &Entity<UserStore> {
 2449        &self.app_state.user_store
 2450    }
 2451
 2452    pub fn project(&self) -> &Entity<Project> {
 2453        &self.project
 2454    }
 2455
 2456    pub fn path_style(&self, cx: &App) -> PathStyle {
 2457        self.project.read(cx).path_style(cx)
 2458    }
 2459
 2460    pub fn recently_activated_items(&self, cx: &App) -> HashMap<EntityId, usize> {
 2461        let mut history: HashMap<EntityId, usize> = HashMap::default();
 2462
 2463        for pane_handle in &self.panes {
 2464            let pane = pane_handle.read(cx);
 2465
 2466            for entry in pane.activation_history() {
 2467                history.insert(
 2468                    entry.entity_id,
 2469                    history
 2470                        .get(&entry.entity_id)
 2471                        .cloned()
 2472                        .unwrap_or(0)
 2473                        .max(entry.timestamp),
 2474                );
 2475            }
 2476        }
 2477
 2478        history
 2479    }
 2480
 2481    pub fn recent_active_item_by_type<T: 'static>(&self, cx: &App) -> Option<Entity<T>> {
 2482        let mut recent_item: Option<Entity<T>> = None;
 2483        let mut recent_timestamp = 0;
 2484        for pane_handle in &self.panes {
 2485            let pane = pane_handle.read(cx);
 2486            let item_map: HashMap<EntityId, &Box<dyn ItemHandle>> =
 2487                pane.items().map(|item| (item.item_id(), item)).collect();
 2488            for entry in pane.activation_history() {
 2489                if entry.timestamp > recent_timestamp
 2490                    && let Some(&item) = item_map.get(&entry.entity_id)
 2491                    && let Some(typed_item) = item.act_as::<T>(cx)
 2492                {
 2493                    recent_timestamp = entry.timestamp;
 2494                    recent_item = Some(typed_item);
 2495                }
 2496            }
 2497        }
 2498        recent_item
 2499    }
 2500
 2501    pub fn recent_navigation_history_iter(
 2502        &self,
 2503        cx: &App,
 2504    ) -> impl Iterator<Item = (ProjectPath, Option<PathBuf>)> + use<> {
 2505        let mut abs_paths_opened: HashMap<PathBuf, HashSet<ProjectPath>> = HashMap::default();
 2506        let mut history: HashMap<ProjectPath, (Option<PathBuf>, usize)> = HashMap::default();
 2507
 2508        for pane in &self.panes {
 2509            let pane = pane.read(cx);
 2510
 2511            pane.nav_history()
 2512                .for_each_entry(cx, &mut |entry, (project_path, fs_path)| {
 2513                    if let Some(fs_path) = &fs_path {
 2514                        abs_paths_opened
 2515                            .entry(fs_path.clone())
 2516                            .or_default()
 2517                            .insert(project_path.clone());
 2518                    }
 2519                    let timestamp = entry.timestamp;
 2520                    match history.entry(project_path) {
 2521                        hash_map::Entry::Occupied(mut entry) => {
 2522                            let (_, old_timestamp) = entry.get();
 2523                            if &timestamp > old_timestamp {
 2524                                entry.insert((fs_path, timestamp));
 2525                            }
 2526                        }
 2527                        hash_map::Entry::Vacant(entry) => {
 2528                            entry.insert((fs_path, timestamp));
 2529                        }
 2530                    }
 2531                });
 2532
 2533            if let Some(item) = pane.active_item()
 2534                && let Some(project_path) = item.project_path(cx)
 2535            {
 2536                let fs_path = self.project.read(cx).absolute_path(&project_path, cx);
 2537
 2538                if let Some(fs_path) = &fs_path {
 2539                    abs_paths_opened
 2540                        .entry(fs_path.clone())
 2541                        .or_default()
 2542                        .insert(project_path.clone());
 2543                }
 2544
 2545                history.insert(project_path, (fs_path, std::usize::MAX));
 2546            }
 2547        }
 2548
 2549        history
 2550            .into_iter()
 2551            .sorted_by_key(|(_, (_, order))| *order)
 2552            .map(|(project_path, (fs_path, _))| (project_path, fs_path))
 2553            .rev()
 2554            .filter(move |(history_path, abs_path)| {
 2555                let latest_project_path_opened = abs_path
 2556                    .as_ref()
 2557                    .and_then(|abs_path| abs_paths_opened.get(abs_path))
 2558                    .and_then(|project_paths| {
 2559                        project_paths
 2560                            .iter()
 2561                            .max_by(|b1, b2| b1.worktree_id.cmp(&b2.worktree_id))
 2562                    });
 2563
 2564                latest_project_path_opened.is_none_or(|path| path == history_path)
 2565            })
 2566    }
 2567
 2568    pub fn recent_navigation_history(
 2569        &self,
 2570        limit: Option<usize>,
 2571        cx: &App,
 2572    ) -> Vec<(ProjectPath, Option<PathBuf>)> {
 2573        self.recent_navigation_history_iter(cx)
 2574            .take(limit.unwrap_or(usize::MAX))
 2575            .collect()
 2576    }
 2577
 2578    pub fn clear_navigation_history(&mut self, _window: &mut Window, cx: &mut Context<Workspace>) {
 2579        for pane in &self.panes {
 2580            pane.update(cx, |pane, cx| pane.nav_history_mut().clear(cx));
 2581        }
 2582    }
 2583
 2584    fn navigate_history(
 2585        &mut self,
 2586        pane: WeakEntity<Pane>,
 2587        mode: NavigationMode,
 2588        window: &mut Window,
 2589        cx: &mut Context<Workspace>,
 2590    ) -> Task<Result<()>> {
 2591        self.navigate_history_impl(
 2592            pane,
 2593            mode,
 2594            window,
 2595            &mut |history, cx| history.pop(mode, cx),
 2596            cx,
 2597        )
 2598    }
 2599
 2600    fn navigate_tag_history(
 2601        &mut self,
 2602        pane: WeakEntity<Pane>,
 2603        mode: TagNavigationMode,
 2604        window: &mut Window,
 2605        cx: &mut Context<Workspace>,
 2606    ) -> Task<Result<()>> {
 2607        self.navigate_history_impl(
 2608            pane,
 2609            NavigationMode::Normal,
 2610            window,
 2611            &mut |history, _cx| history.pop_tag(mode),
 2612            cx,
 2613        )
 2614    }
 2615
 2616    fn navigate_history_impl(
 2617        &mut self,
 2618        pane: WeakEntity<Pane>,
 2619        mode: NavigationMode,
 2620        window: &mut Window,
 2621        cb: &mut dyn FnMut(&mut NavHistory, &mut App) -> Option<NavigationEntry>,
 2622        cx: &mut Context<Workspace>,
 2623    ) -> Task<Result<()>> {
 2624        let to_load = if let Some(pane) = pane.upgrade() {
 2625            pane.update(cx, |pane, cx| {
 2626                window.focus(&pane.focus_handle(cx), cx);
 2627                loop {
 2628                    // Retrieve the weak item handle from the history.
 2629                    let entry = cb(pane.nav_history_mut(), cx)?;
 2630
 2631                    // If the item is still present in this pane, then activate it.
 2632                    if let Some(index) = entry
 2633                        .item
 2634                        .upgrade()
 2635                        .and_then(|v| pane.index_for_item(v.as_ref()))
 2636                    {
 2637                        let prev_active_item_index = pane.active_item_index();
 2638                        pane.nav_history_mut().set_mode(mode);
 2639                        pane.activate_item(index, true, true, window, cx);
 2640                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 2641
 2642                        let mut navigated = prev_active_item_index != pane.active_item_index();
 2643                        if let Some(data) = entry.data {
 2644                            navigated |= pane.active_item()?.navigate(data, window, cx);
 2645                        }
 2646
 2647                        if navigated {
 2648                            break None;
 2649                        }
 2650                    } else {
 2651                        // If the item is no longer present in this pane, then retrieve its
 2652                        // path info in order to reopen it.
 2653                        break pane
 2654                            .nav_history()
 2655                            .path_for_item(entry.item.id())
 2656                            .map(|(project_path, abs_path)| (project_path, abs_path, entry));
 2657                    }
 2658                }
 2659            })
 2660        } else {
 2661            None
 2662        };
 2663
 2664        if let Some((project_path, abs_path, entry)) = to_load {
 2665            // If the item was no longer present, then load it again from its previous path, first try the local path
 2666            let open_by_project_path = self.load_path(project_path.clone(), window, cx);
 2667
 2668            cx.spawn_in(window, async move  |workspace, cx| {
 2669                let open_by_project_path = open_by_project_path.await;
 2670                let mut navigated = false;
 2671                match open_by_project_path
 2672                    .with_context(|| format!("Navigating to {project_path:?}"))
 2673                {
 2674                    Ok((project_entry_id, build_item)) => {
 2675                        let prev_active_item_id = pane.update(cx, |pane, _| {
 2676                            pane.nav_history_mut().set_mode(mode);
 2677                            pane.active_item().map(|p| p.item_id())
 2678                        })?;
 2679
 2680                        pane.update_in(cx, |pane, window, cx| {
 2681                            let item = pane.open_item(
 2682                                project_entry_id,
 2683                                project_path,
 2684                                true,
 2685                                entry.is_preview,
 2686                                true,
 2687                                None,
 2688                                window, cx,
 2689                                build_item,
 2690                            );
 2691                            navigated |= Some(item.item_id()) != prev_active_item_id;
 2692                            pane.nav_history_mut().set_mode(NavigationMode::Normal);
 2693                            if let Some(data) = entry.data {
 2694                                navigated |= item.navigate(data, window, cx);
 2695                            }
 2696                        })?;
 2697                    }
 2698                    Err(open_by_project_path_e) => {
 2699                        // Fall back to opening by abs path, in case an external file was opened and closed,
 2700                        // and its worktree is now dropped
 2701                        if let Some(abs_path) = abs_path {
 2702                            let prev_active_item_id = pane.update(cx, |pane, _| {
 2703                                pane.nav_history_mut().set_mode(mode);
 2704                                pane.active_item().map(|p| p.item_id())
 2705                            })?;
 2706                            let open_by_abs_path = workspace.update_in(cx, |workspace, window, cx| {
 2707                                workspace.open_abs_path(abs_path.clone(), OpenOptions { visible: Some(OpenVisible::None), ..Default::default() }, window, cx)
 2708                            })?;
 2709                            match open_by_abs_path
 2710                                .await
 2711                                .with_context(|| format!("Navigating to {abs_path:?}"))
 2712                            {
 2713                                Ok(item) => {
 2714                                    pane.update_in(cx, |pane, window, cx| {
 2715                                        navigated |= Some(item.item_id()) != prev_active_item_id;
 2716                                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 2717                                        if let Some(data) = entry.data {
 2718                                            navigated |= item.navigate(data, window, cx);
 2719                                        }
 2720                                    })?;
 2721                                }
 2722                                Err(open_by_abs_path_e) => {
 2723                                    log::error!("Failed to navigate history: {open_by_project_path_e:#} and {open_by_abs_path_e:#}");
 2724                                }
 2725                            }
 2726                        }
 2727                    }
 2728                }
 2729
 2730                if !navigated {
 2731                    workspace
 2732                        .update_in(cx, |workspace, window, cx| {
 2733                            Self::navigate_history(workspace, pane, mode, window, cx)
 2734                        })?
 2735                        .await?;
 2736                }
 2737
 2738                Ok(())
 2739            })
 2740        } else {
 2741            Task::ready(Ok(()))
 2742        }
 2743    }
 2744
 2745    pub fn go_back(
 2746        &mut self,
 2747        pane: WeakEntity<Pane>,
 2748        window: &mut Window,
 2749        cx: &mut Context<Workspace>,
 2750    ) -> Task<Result<()>> {
 2751        self.navigate_history(pane, NavigationMode::GoingBack, window, cx)
 2752    }
 2753
 2754    pub fn go_forward(
 2755        &mut self,
 2756        pane: WeakEntity<Pane>,
 2757        window: &mut Window,
 2758        cx: &mut Context<Workspace>,
 2759    ) -> Task<Result<()>> {
 2760        self.navigate_history(pane, NavigationMode::GoingForward, window, cx)
 2761    }
 2762
 2763    pub fn reopen_closed_item(
 2764        &mut self,
 2765        window: &mut Window,
 2766        cx: &mut Context<Workspace>,
 2767    ) -> Task<Result<()>> {
 2768        self.navigate_history(
 2769            self.active_pane().downgrade(),
 2770            NavigationMode::ReopeningClosedItem,
 2771            window,
 2772            cx,
 2773        )
 2774    }
 2775
 2776    pub fn client(&self) -> &Arc<Client> {
 2777        &self.app_state.client
 2778    }
 2779
 2780    pub fn set_titlebar_item(&mut self, item: AnyView, _: &mut Window, cx: &mut Context<Self>) {
 2781        self.titlebar_item = Some(item);
 2782        cx.notify();
 2783    }
 2784
 2785    pub fn set_prompt_for_new_path(&mut self, prompt: PromptForNewPath) {
 2786        self.on_prompt_for_new_path = Some(prompt)
 2787    }
 2788
 2789    pub fn set_prompt_for_open_path(&mut self, prompt: PromptForOpenPath) {
 2790        self.on_prompt_for_open_path = Some(prompt)
 2791    }
 2792
 2793    pub fn set_terminal_provider(&mut self, provider: impl TerminalProvider + 'static) {
 2794        self.terminal_provider = Some(Box::new(provider));
 2795    }
 2796
 2797    pub fn set_debugger_provider(&mut self, provider: impl DebuggerProvider + 'static) {
 2798        self.debugger_provider = Some(Arc::new(provider));
 2799    }
 2800
 2801    pub fn debugger_provider(&self) -> Option<Arc<dyn DebuggerProvider>> {
 2802        self.debugger_provider.clone()
 2803    }
 2804
 2805    pub fn prompt_for_open_path(
 2806        &mut self,
 2807        path_prompt_options: PathPromptOptions,
 2808        lister: DirectoryLister,
 2809        window: &mut Window,
 2810        cx: &mut Context<Self>,
 2811    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2812        if !lister.is_local(cx) || !WorkspaceSettings::get_global(cx).use_system_path_prompts {
 2813            let prompt = self.on_prompt_for_open_path.take().unwrap();
 2814            let rx = prompt(self, lister, window, cx);
 2815            self.on_prompt_for_open_path = Some(prompt);
 2816            rx
 2817        } else {
 2818            let (tx, rx) = oneshot::channel();
 2819            let abs_path = cx.prompt_for_paths(path_prompt_options);
 2820
 2821            cx.spawn_in(window, async move |workspace, cx| {
 2822                let Ok(result) = abs_path.await else {
 2823                    return Ok(());
 2824                };
 2825
 2826                match result {
 2827                    Ok(result) => {
 2828                        tx.send(result).ok();
 2829                    }
 2830                    Err(err) => {
 2831                        let rx = workspace.update_in(cx, |workspace, window, cx| {
 2832                            workspace.show_portal_error(err.to_string(), cx);
 2833                            let prompt = workspace.on_prompt_for_open_path.take().unwrap();
 2834                            let rx = prompt(workspace, lister, window, cx);
 2835                            workspace.on_prompt_for_open_path = Some(prompt);
 2836                            rx
 2837                        })?;
 2838                        if let Ok(path) = rx.await {
 2839                            tx.send(path).ok();
 2840                        }
 2841                    }
 2842                };
 2843                anyhow::Ok(())
 2844            })
 2845            .detach();
 2846
 2847            rx
 2848        }
 2849    }
 2850
 2851    pub fn prompt_for_new_path(
 2852        &mut self,
 2853        lister: DirectoryLister,
 2854        suggested_name: Option<String>,
 2855        window: &mut Window,
 2856        cx: &mut Context<Self>,
 2857    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2858        if self.project.read(cx).is_via_collab()
 2859            || self.project.read(cx).is_via_remote_server()
 2860            || !WorkspaceSettings::get_global(cx).use_system_path_prompts
 2861        {
 2862            let prompt = self.on_prompt_for_new_path.take().unwrap();
 2863            let rx = prompt(self, lister, suggested_name, window, cx);
 2864            self.on_prompt_for_new_path = Some(prompt);
 2865            return rx;
 2866        }
 2867
 2868        let (tx, rx) = oneshot::channel();
 2869        cx.spawn_in(window, async move |workspace, cx| {
 2870            let abs_path = workspace.update(cx, |workspace, cx| {
 2871                let relative_to = workspace
 2872                    .most_recent_active_path(cx)
 2873                    .and_then(|p| p.parent().map(|p| p.to_path_buf()))
 2874                    .or_else(|| {
 2875                        let project = workspace.project.read(cx);
 2876                        project.visible_worktrees(cx).find_map(|worktree| {
 2877                            Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
 2878                        })
 2879                    })
 2880                    .or_else(std::env::home_dir)
 2881                    .unwrap_or_else(|| PathBuf::from(""));
 2882                cx.prompt_for_new_path(&relative_to, suggested_name.as_deref())
 2883            })?;
 2884            let abs_path = match abs_path.await? {
 2885                Ok(path) => path,
 2886                Err(err) => {
 2887                    let rx = workspace.update_in(cx, |workspace, window, cx| {
 2888                        workspace.show_portal_error(err.to_string(), cx);
 2889
 2890                        let prompt = workspace.on_prompt_for_new_path.take().unwrap();
 2891                        let rx = prompt(workspace, lister, suggested_name, window, cx);
 2892                        workspace.on_prompt_for_new_path = Some(prompt);
 2893                        rx
 2894                    })?;
 2895                    if let Ok(path) = rx.await {
 2896                        tx.send(path).ok();
 2897                    }
 2898                    return anyhow::Ok(());
 2899                }
 2900            };
 2901
 2902            tx.send(abs_path.map(|path| vec![path])).ok();
 2903            anyhow::Ok(())
 2904        })
 2905        .detach();
 2906
 2907        rx
 2908    }
 2909
 2910    pub fn titlebar_item(&self) -> Option<AnyView> {
 2911        self.titlebar_item.clone()
 2912    }
 2913
 2914    /// Returns the worktree override set by the user (e.g., via the project dropdown).
 2915    /// When set, git-related operations should use this worktree instead of deriving
 2916    /// the active worktree from the focused file.
 2917    pub fn active_worktree_override(&self) -> Option<WorktreeId> {
 2918        self.active_worktree_override
 2919    }
 2920
 2921    pub fn set_active_worktree_override(
 2922        &mut self,
 2923        worktree_id: Option<WorktreeId>,
 2924        cx: &mut Context<Self>,
 2925    ) {
 2926        self.active_worktree_override = worktree_id;
 2927        cx.notify();
 2928    }
 2929
 2930    pub fn clear_active_worktree_override(&mut self, cx: &mut Context<Self>) {
 2931        self.active_worktree_override = None;
 2932        cx.notify();
 2933    }
 2934
 2935    /// Call the given callback with a workspace whose project is local or remote via WSL (allowing host access).
 2936    ///
 2937    /// If the given workspace has a local project, then it will be passed
 2938    /// to the callback. Otherwise, a new empty window will be created.
 2939    pub fn with_local_workspace<T, F>(
 2940        &mut self,
 2941        window: &mut Window,
 2942        cx: &mut Context<Self>,
 2943        callback: F,
 2944    ) -> Task<Result<T>>
 2945    where
 2946        T: 'static,
 2947        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
 2948    {
 2949        if self.project.read(cx).is_local() {
 2950            Task::ready(Ok(callback(self, window, cx)))
 2951        } else {
 2952            let env = self.project.read(cx).cli_environment(cx);
 2953            let task = Self::new_local(
 2954                Vec::new(),
 2955                self.app_state.clone(),
 2956                None,
 2957                env,
 2958                None,
 2959                OpenMode::Activate,
 2960                cx,
 2961            );
 2962            cx.spawn_in(window, async move |_vh, cx| {
 2963                let OpenResult {
 2964                    window: multi_workspace_window,
 2965                    ..
 2966                } = task.await?;
 2967                multi_workspace_window.update(cx, |multi_workspace, window, cx| {
 2968                    let workspace = multi_workspace.workspace().clone();
 2969                    workspace.update(cx, |workspace, cx| callback(workspace, window, cx))
 2970                })
 2971            })
 2972        }
 2973    }
 2974
 2975    /// Call the given callback with a workspace whose project is local or remote via WSL (allowing host access).
 2976    ///
 2977    /// If the given workspace has a local project, then it will be passed
 2978    /// to the callback. Otherwise, a new empty window will be created.
 2979    pub fn with_local_or_wsl_workspace<T, F>(
 2980        &mut self,
 2981        window: &mut Window,
 2982        cx: &mut Context<Self>,
 2983        callback: F,
 2984    ) -> Task<Result<T>>
 2985    where
 2986        T: 'static,
 2987        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
 2988    {
 2989        let project = self.project.read(cx);
 2990        if project.is_local() || project.is_via_wsl_with_host_interop(cx) {
 2991            Task::ready(Ok(callback(self, window, cx)))
 2992        } else {
 2993            let env = self.project.read(cx).cli_environment(cx);
 2994            let task = Self::new_local(
 2995                Vec::new(),
 2996                self.app_state.clone(),
 2997                None,
 2998                env,
 2999                None,
 3000                OpenMode::Activate,
 3001                cx,
 3002            );
 3003            cx.spawn_in(window, async move |_vh, cx| {
 3004                let OpenResult {
 3005                    window: multi_workspace_window,
 3006                    ..
 3007                } = task.await?;
 3008                multi_workspace_window.update(cx, |multi_workspace, window, cx| {
 3009                    let workspace = multi_workspace.workspace().clone();
 3010                    workspace.update(cx, |workspace, cx| callback(workspace, window, cx))
 3011                })
 3012            })
 3013        }
 3014    }
 3015
 3016    pub fn worktrees<'a>(&self, cx: &'a App) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 3017        self.project.read(cx).worktrees(cx)
 3018    }
 3019
 3020    pub fn visible_worktrees<'a>(
 3021        &self,
 3022        cx: &'a App,
 3023    ) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 3024        self.project.read(cx).visible_worktrees(cx)
 3025    }
 3026
 3027    #[cfg(any(test, feature = "test-support"))]
 3028    pub fn worktree_scans_complete(&self, cx: &App) -> impl Future<Output = ()> + 'static + use<> {
 3029        let futures = self
 3030            .worktrees(cx)
 3031            .filter_map(|worktree| worktree.read(cx).as_local())
 3032            .map(|worktree| worktree.scan_complete())
 3033            .collect::<Vec<_>>();
 3034        async move {
 3035            for future in futures {
 3036                future.await;
 3037            }
 3038        }
 3039    }
 3040
 3041    pub fn close_global(cx: &mut App) {
 3042        cx.defer(|cx| {
 3043            cx.windows().iter().find(|window| {
 3044                window
 3045                    .update(cx, |_, window, _| {
 3046                        if window.is_window_active() {
 3047                            //This can only get called when the window's project connection has been lost
 3048                            //so we don't need to prompt the user for anything and instead just close the window
 3049                            window.remove_window();
 3050                            true
 3051                        } else {
 3052                            false
 3053                        }
 3054                    })
 3055                    .unwrap_or(false)
 3056            });
 3057        });
 3058    }
 3059
 3060    pub fn move_focused_panel_to_next_position(
 3061        &mut self,
 3062        _: &MoveFocusedPanelToNextPosition,
 3063        window: &mut Window,
 3064        cx: &mut Context<Self>,
 3065    ) {
 3066        let docks = self.all_docks();
 3067        let active_dock = docks
 3068            .into_iter()
 3069            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 3070
 3071        if let Some(dock) = active_dock {
 3072            dock.update(cx, |dock, cx| {
 3073                let active_panel = dock
 3074                    .active_panel()
 3075                    .filter(|panel| panel.panel_focus_handle(cx).contains_focused(window, cx));
 3076
 3077                if let Some(panel) = active_panel {
 3078                    panel.move_to_next_position(window, cx);
 3079                }
 3080            })
 3081        }
 3082    }
 3083
 3084    pub fn prepare_to_close(
 3085        &mut self,
 3086        close_intent: CloseIntent,
 3087        window: &mut Window,
 3088        cx: &mut Context<Self>,
 3089    ) -> Task<Result<bool>> {
 3090        let active_call = self.active_global_call();
 3091
 3092        cx.spawn_in(window, async move |this, cx| {
 3093            this.update(cx, |this, _| {
 3094                if close_intent == CloseIntent::CloseWindow {
 3095                    this.removing = true;
 3096                }
 3097            })?;
 3098
 3099            let workspace_count = cx.update(|_window, cx| {
 3100                cx.windows()
 3101                    .iter()
 3102                    .filter(|window| window.downcast::<MultiWorkspace>().is_some())
 3103                    .count()
 3104            })?;
 3105
 3106            #[cfg(target_os = "macos")]
 3107            let save_last_workspace = false;
 3108
 3109            // On Linux and Windows, closing the last window should restore the last workspace.
 3110            #[cfg(not(target_os = "macos"))]
 3111            let save_last_workspace = {
 3112                let remaining_workspaces = cx.update(|_window, cx| {
 3113                    cx.windows()
 3114                        .iter()
 3115                        .filter_map(|window| window.downcast::<MultiWorkspace>())
 3116                        .filter_map(|multi_workspace| {
 3117                            multi_workspace
 3118                                .update(cx, |multi_workspace, _, cx| {
 3119                                    multi_workspace.workspace().read(cx).removing
 3120                                })
 3121                                .ok()
 3122                        })
 3123                        .filter(|removing| !removing)
 3124                        .count()
 3125                })?;
 3126
 3127                close_intent != CloseIntent::ReplaceWindow && remaining_workspaces == 0
 3128            };
 3129
 3130            if let Some(active_call) = active_call
 3131                && workspace_count == 1
 3132                && cx
 3133                    .update(|_window, cx| active_call.0.is_in_room(cx))
 3134                    .unwrap_or(false)
 3135            {
 3136                if close_intent == CloseIntent::CloseWindow {
 3137                    this.update(cx, |_, cx| cx.emit(Event::Activate))?;
 3138                    let answer = cx.update(|window, cx| {
 3139                        window.prompt(
 3140                            PromptLevel::Warning,
 3141                            "Do you want to leave the current call?",
 3142                            None,
 3143                            &["Close window and hang up", "Cancel"],
 3144                            cx,
 3145                        )
 3146                    })?;
 3147
 3148                    if answer.await.log_err() == Some(1) {
 3149                        return anyhow::Ok(false);
 3150                    } else {
 3151                        if let Ok(task) = cx.update(|_window, cx| active_call.0.hang_up(cx)) {
 3152                            task.await.log_err();
 3153                        }
 3154                    }
 3155                }
 3156                if close_intent == CloseIntent::ReplaceWindow {
 3157                    _ = cx.update(|_window, cx| {
 3158                        let multi_workspace = cx
 3159                            .windows()
 3160                            .iter()
 3161                            .filter_map(|window| window.downcast::<MultiWorkspace>())
 3162                            .next()
 3163                            .unwrap();
 3164                        let project = multi_workspace
 3165                            .read(cx)?
 3166                            .workspace()
 3167                            .read(cx)
 3168                            .project
 3169                            .clone();
 3170                        if project.read(cx).is_shared() {
 3171                            active_call.0.unshare_project(project, cx)?;
 3172                        }
 3173                        Ok::<_, anyhow::Error>(())
 3174                    });
 3175                }
 3176            }
 3177
 3178            let save_result = this
 3179                .update_in(cx, |this, window, cx| {
 3180                    this.save_all_internal(SaveIntent::Close, window, cx)
 3181                })?
 3182                .await;
 3183
 3184            // If we're not quitting, but closing, we remove the workspace from
 3185            // the current session.
 3186            if close_intent != CloseIntent::Quit
 3187                && !save_last_workspace
 3188                && save_result.as_ref().is_ok_and(|&res| res)
 3189            {
 3190                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))?
 3191                    .await;
 3192            }
 3193
 3194            save_result
 3195        })
 3196    }
 3197
 3198    fn save_all(&mut self, action: &SaveAll, window: &mut Window, cx: &mut Context<Self>) {
 3199        self.save_all_internal(
 3200            action.save_intent.unwrap_or(SaveIntent::SaveAll),
 3201            window,
 3202            cx,
 3203        )
 3204        .detach_and_log_err(cx);
 3205    }
 3206
 3207    fn send_keystrokes(
 3208        &mut self,
 3209        action: &SendKeystrokes,
 3210        window: &mut Window,
 3211        cx: &mut Context<Self>,
 3212    ) {
 3213        let keystrokes: Vec<Keystroke> = action
 3214            .0
 3215            .split(' ')
 3216            .flat_map(|k| Keystroke::parse(k).log_err())
 3217            .map(|k| {
 3218                cx.keyboard_mapper()
 3219                    .map_key_equivalent(k, false)
 3220                    .inner()
 3221                    .clone()
 3222            })
 3223            .collect();
 3224        let _ = self.send_keystrokes_impl(keystrokes, window, cx);
 3225    }
 3226
 3227    pub fn send_keystrokes_impl(
 3228        &mut self,
 3229        keystrokes: Vec<Keystroke>,
 3230        window: &mut Window,
 3231        cx: &mut Context<Self>,
 3232    ) -> Shared<Task<()>> {
 3233        let mut state = self.dispatching_keystrokes.borrow_mut();
 3234        if !state.dispatched.insert(keystrokes.clone()) {
 3235            cx.propagate();
 3236            return state.task.clone().unwrap();
 3237        }
 3238
 3239        state.queue.extend(keystrokes);
 3240
 3241        let keystrokes = self.dispatching_keystrokes.clone();
 3242        if state.task.is_none() {
 3243            state.task = Some(
 3244                window
 3245                    .spawn(cx, async move |cx| {
 3246                        // limit to 100 keystrokes to avoid infinite recursion.
 3247                        for _ in 0..100 {
 3248                            let keystroke = {
 3249                                let mut state = keystrokes.borrow_mut();
 3250                                let Some(keystroke) = state.queue.pop_front() else {
 3251                                    state.dispatched.clear();
 3252                                    state.task.take();
 3253                                    return;
 3254                                };
 3255                                keystroke
 3256                            };
 3257                            cx.update(|window, cx| {
 3258                                let focused = window.focused(cx);
 3259                                window.dispatch_keystroke(keystroke.clone(), cx);
 3260                                if window.focused(cx) != focused {
 3261                                    // dispatch_keystroke may cause the focus to change.
 3262                                    // draw's side effect is to schedule the FocusChanged events in the current flush effect cycle
 3263                                    // And we need that to happen before the next keystroke to keep vim mode happy...
 3264                                    // (Note that the tests always do this implicitly, so you must manually test with something like:
 3265                                    //   "bindings": { "g z": ["workspace::SendKeystrokes", ": j <enter> u"]}
 3266                                    // )
 3267                                    window.draw(cx).clear();
 3268                                }
 3269                            })
 3270                            .ok();
 3271
 3272                            // Yield between synthetic keystrokes so deferred focus and
 3273                            // other effects can settle before dispatching the next key.
 3274                            yield_now().await;
 3275                        }
 3276
 3277                        *keystrokes.borrow_mut() = Default::default();
 3278                        log::error!("over 100 keystrokes passed to send_keystrokes");
 3279                    })
 3280                    .shared(),
 3281            );
 3282        }
 3283        state.task.clone().unwrap()
 3284    }
 3285
 3286    fn save_all_internal(
 3287        &mut self,
 3288        mut save_intent: SaveIntent,
 3289        window: &mut Window,
 3290        cx: &mut Context<Self>,
 3291    ) -> Task<Result<bool>> {
 3292        if self.project.read(cx).is_disconnected(cx) {
 3293            return Task::ready(Ok(true));
 3294        }
 3295        let dirty_items = self
 3296            .panes
 3297            .iter()
 3298            .flat_map(|pane| {
 3299                pane.read(cx).items().filter_map(|item| {
 3300                    if item.is_dirty(cx) {
 3301                        item.tab_content_text(0, cx);
 3302                        Some((pane.downgrade(), item.boxed_clone()))
 3303                    } else {
 3304                        None
 3305                    }
 3306                })
 3307            })
 3308            .collect::<Vec<_>>();
 3309
 3310        let project = self.project.clone();
 3311        cx.spawn_in(window, async move |workspace, cx| {
 3312            let dirty_items = if save_intent == SaveIntent::Close && !dirty_items.is_empty() {
 3313                let (serialize_tasks, remaining_dirty_items) =
 3314                    workspace.update_in(cx, |workspace, window, cx| {
 3315                        let mut remaining_dirty_items = Vec::new();
 3316                        let mut serialize_tasks = Vec::new();
 3317                        for (pane, item) in dirty_items {
 3318                            if let Some(task) = item
 3319                                .to_serializable_item_handle(cx)
 3320                                .and_then(|handle| handle.serialize(workspace, true, window, cx))
 3321                            {
 3322                                serialize_tasks.push(task);
 3323                            } else {
 3324                                remaining_dirty_items.push((pane, item));
 3325                            }
 3326                        }
 3327                        (serialize_tasks, remaining_dirty_items)
 3328                    })?;
 3329
 3330                futures::future::try_join_all(serialize_tasks).await?;
 3331
 3332                if !remaining_dirty_items.is_empty() {
 3333                    workspace.update(cx, |_, cx| cx.emit(Event::Activate))?;
 3334                }
 3335
 3336                if remaining_dirty_items.len() > 1 {
 3337                    let answer = workspace.update_in(cx, |_, window, cx| {
 3338                        let detail = Pane::file_names_for_prompt(
 3339                            &mut remaining_dirty_items.iter().map(|(_, handle)| handle),
 3340                            cx,
 3341                        );
 3342                        window.prompt(
 3343                            PromptLevel::Warning,
 3344                            "Do you want to save all changes in the following files?",
 3345                            Some(&detail),
 3346                            &["Save all", "Discard all", "Cancel"],
 3347                            cx,
 3348                        )
 3349                    })?;
 3350                    match answer.await.log_err() {
 3351                        Some(0) => save_intent = SaveIntent::SaveAll,
 3352                        Some(1) => save_intent = SaveIntent::Skip,
 3353                        Some(2) => return Ok(false),
 3354                        _ => {}
 3355                    }
 3356                }
 3357
 3358                remaining_dirty_items
 3359            } else {
 3360                dirty_items
 3361            };
 3362
 3363            for (pane, item) in dirty_items {
 3364                let (singleton, project_entry_ids) = cx.update(|_, cx| {
 3365                    (
 3366                        item.buffer_kind(cx) == ItemBufferKind::Singleton,
 3367                        item.project_entry_ids(cx),
 3368                    )
 3369                })?;
 3370                if (singleton || !project_entry_ids.is_empty())
 3371                    && !Pane::save_item(project.clone(), &pane, &*item, save_intent, cx).await?
 3372                {
 3373                    return Ok(false);
 3374                }
 3375            }
 3376            Ok(true)
 3377        })
 3378    }
 3379
 3380    pub fn open_workspace_for_paths(
 3381        &mut self,
 3382        // replace_current_window: bool,
 3383        mut open_mode: OpenMode,
 3384        paths: Vec<PathBuf>,
 3385        window: &mut Window,
 3386        cx: &mut Context<Self>,
 3387    ) -> Task<Result<Entity<Workspace>>> {
 3388        let requesting_window = window.window_handle().downcast::<MultiWorkspace>();
 3389        let is_remote = self.project.read(cx).is_via_collab();
 3390        let has_worktree = self.project.read(cx).worktrees(cx).next().is_some();
 3391        let has_dirty_items = self.items(cx).any(|item| item.is_dirty(cx));
 3392
 3393        let workspace_is_empty = !is_remote && !has_worktree && !has_dirty_items;
 3394        if workspace_is_empty {
 3395            open_mode = OpenMode::Replace;
 3396        }
 3397
 3398        let app_state = self.app_state.clone();
 3399
 3400        cx.spawn(async move |_, cx| {
 3401            let OpenResult { workspace, .. } = cx
 3402                .update(|cx| {
 3403                    open_paths(
 3404                        &paths,
 3405                        app_state,
 3406                        OpenOptions {
 3407                            requesting_window,
 3408                            open_mode,
 3409                            ..Default::default()
 3410                        },
 3411                        cx,
 3412                    )
 3413                })
 3414                .await?;
 3415            Ok(workspace)
 3416        })
 3417    }
 3418
 3419    #[allow(clippy::type_complexity)]
 3420    pub fn open_paths(
 3421        &mut self,
 3422        mut abs_paths: Vec<PathBuf>,
 3423        options: OpenOptions,
 3424        pane: Option<WeakEntity<Pane>>,
 3425        window: &mut Window,
 3426        cx: &mut Context<Self>,
 3427    ) -> Task<Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>> {
 3428        let fs = self.app_state.fs.clone();
 3429
 3430        let caller_ordered_abs_paths = abs_paths.clone();
 3431
 3432        // Sort the paths to ensure we add worktrees for parents before their children.
 3433        abs_paths.sort_unstable();
 3434        cx.spawn_in(window, async move |this, cx| {
 3435            let mut tasks = Vec::with_capacity(abs_paths.len());
 3436
 3437            for abs_path in &abs_paths {
 3438                let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
 3439                    OpenVisible::All => Some(true),
 3440                    OpenVisible::None => Some(false),
 3441                    OpenVisible::OnlyFiles => match fs.metadata(abs_path).await.log_err() {
 3442                        Some(Some(metadata)) => Some(!metadata.is_dir),
 3443                        Some(None) => Some(true),
 3444                        None => None,
 3445                    },
 3446                    OpenVisible::OnlyDirectories => match fs.metadata(abs_path).await.log_err() {
 3447                        Some(Some(metadata)) => Some(metadata.is_dir),
 3448                        Some(None) => Some(false),
 3449                        None => None,
 3450                    },
 3451                };
 3452                let project_path = match visible {
 3453                    Some(visible) => match this
 3454                        .update(cx, |this, cx| {
 3455                            Workspace::project_path_for_path(
 3456                                this.project.clone(),
 3457                                abs_path,
 3458                                visible,
 3459                                cx,
 3460                            )
 3461                        })
 3462                        .log_err()
 3463                    {
 3464                        Some(project_path) => project_path.await.log_err(),
 3465                        None => None,
 3466                    },
 3467                    None => None,
 3468                };
 3469
 3470                let this = this.clone();
 3471                let abs_path: Arc<Path> = SanitizedPath::new(&abs_path).as_path().into();
 3472                let fs = fs.clone();
 3473                let pane = pane.clone();
 3474                let task = cx.spawn(async move |cx| {
 3475                    let (_worktree, project_path) = project_path?;
 3476                    if fs.is_dir(&abs_path).await {
 3477                        // Opening a directory should not race to update the active entry.
 3478                        // We'll select/reveal a deterministic final entry after all paths finish opening.
 3479                        None
 3480                    } else {
 3481                        Some(
 3482                            this.update_in(cx, |this, window, cx| {
 3483                                this.open_path(
 3484                                    project_path,
 3485                                    pane,
 3486                                    options.focus.unwrap_or(true),
 3487                                    window,
 3488                                    cx,
 3489                                )
 3490                            })
 3491                            .ok()?
 3492                            .await,
 3493                        )
 3494                    }
 3495                });
 3496                tasks.push(task);
 3497            }
 3498
 3499            let results = futures::future::join_all(tasks).await;
 3500
 3501            // Determine the winner using the fake/abstract FS metadata, not `Path::is_dir`.
 3502            let mut winner: Option<(PathBuf, bool)> = None;
 3503            for abs_path in caller_ordered_abs_paths.into_iter().rev() {
 3504                if let Some(Some(metadata)) = fs.metadata(&abs_path).await.log_err() {
 3505                    if !metadata.is_dir {
 3506                        winner = Some((abs_path, false));
 3507                        break;
 3508                    }
 3509                    if winner.is_none() {
 3510                        winner = Some((abs_path, true));
 3511                    }
 3512                } else if winner.is_none() {
 3513                    winner = Some((abs_path, false));
 3514                }
 3515            }
 3516
 3517            // Compute the winner entry id on the foreground thread and emit once, after all
 3518            // paths finish opening. This avoids races between concurrently-opening paths
 3519            // (directories in particular) and makes the resulting project panel selection
 3520            // deterministic.
 3521            if let Some((winner_abs_path, winner_is_dir)) = winner {
 3522                'emit_winner: {
 3523                    let winner_abs_path: Arc<Path> =
 3524                        SanitizedPath::new(&winner_abs_path).as_path().into();
 3525
 3526                    let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
 3527                        OpenVisible::All => true,
 3528                        OpenVisible::None => false,
 3529                        OpenVisible::OnlyFiles => !winner_is_dir,
 3530                        OpenVisible::OnlyDirectories => winner_is_dir,
 3531                    };
 3532
 3533                    let Some(worktree_task) = this
 3534                        .update(cx, |workspace, cx| {
 3535                            workspace.project.update(cx, |project, cx| {
 3536                                project.find_or_create_worktree(
 3537                                    winner_abs_path.as_ref(),
 3538                                    visible,
 3539                                    cx,
 3540                                )
 3541                            })
 3542                        })
 3543                        .ok()
 3544                    else {
 3545                        break 'emit_winner;
 3546                    };
 3547
 3548                    let Ok((worktree, _)) = worktree_task.await else {
 3549                        break 'emit_winner;
 3550                    };
 3551
 3552                    let Ok(Some(entry_id)) = this.update(cx, |_, cx| {
 3553                        let worktree = worktree.read(cx);
 3554                        let worktree_abs_path = worktree.abs_path();
 3555                        let entry = if winner_abs_path.as_ref() == worktree_abs_path.as_ref() {
 3556                            worktree.root_entry()
 3557                        } else {
 3558                            winner_abs_path
 3559                                .strip_prefix(worktree_abs_path.as_ref())
 3560                                .ok()
 3561                                .and_then(|relative_path| {
 3562                                    let relative_path =
 3563                                        RelPath::new(relative_path, PathStyle::local())
 3564                                            .log_err()?;
 3565                                    worktree.entry_for_path(&relative_path)
 3566                                })
 3567                        }?;
 3568                        Some(entry.id)
 3569                    }) else {
 3570                        break 'emit_winner;
 3571                    };
 3572
 3573                    this.update(cx, |workspace, cx| {
 3574                        workspace.project.update(cx, |_, cx| {
 3575                            cx.emit(project::Event::ActiveEntryChanged(Some(entry_id)));
 3576                        });
 3577                    })
 3578                    .ok();
 3579                }
 3580            }
 3581
 3582            results
 3583        })
 3584    }
 3585
 3586    pub fn open_resolved_path(
 3587        &mut self,
 3588        path: ResolvedPath,
 3589        window: &mut Window,
 3590        cx: &mut Context<Self>,
 3591    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3592        match path {
 3593            ResolvedPath::ProjectPath { project_path, .. } => {
 3594                self.open_path(project_path, None, true, window, cx)
 3595            }
 3596            ResolvedPath::AbsPath { path, .. } => self.open_abs_path(
 3597                PathBuf::from(path),
 3598                OpenOptions {
 3599                    visible: Some(OpenVisible::None),
 3600                    ..Default::default()
 3601                },
 3602                window,
 3603                cx,
 3604            ),
 3605        }
 3606    }
 3607
 3608    pub fn absolute_path_of_worktree(
 3609        &self,
 3610        worktree_id: WorktreeId,
 3611        cx: &mut Context<Self>,
 3612    ) -> Option<PathBuf> {
 3613        self.project
 3614            .read(cx)
 3615            .worktree_for_id(worktree_id, cx)
 3616            // TODO: use `abs_path` or `root_dir`
 3617            .map(|wt| wt.read(cx).abs_path().as_ref().to_path_buf())
 3618    }
 3619
 3620    pub fn add_folder_to_project(
 3621        &mut self,
 3622        _: &AddFolderToProject,
 3623        window: &mut Window,
 3624        cx: &mut Context<Self>,
 3625    ) {
 3626        let project = self.project.read(cx);
 3627        if project.is_via_collab() {
 3628            self.show_error(
 3629                &anyhow!("You cannot add folders to someone else's project"),
 3630                cx,
 3631            );
 3632            return;
 3633        }
 3634        let paths = self.prompt_for_open_path(
 3635            PathPromptOptions {
 3636                files: false,
 3637                directories: true,
 3638                multiple: true,
 3639                prompt: None,
 3640            },
 3641            DirectoryLister::Project(self.project.clone()),
 3642            window,
 3643            cx,
 3644        );
 3645        cx.spawn_in(window, async move |this, cx| {
 3646            if let Some(paths) = paths.await.log_err().flatten() {
 3647                let results = this
 3648                    .update_in(cx, |this, window, cx| {
 3649                        this.open_paths(
 3650                            paths,
 3651                            OpenOptions {
 3652                                visible: Some(OpenVisible::All),
 3653                                ..Default::default()
 3654                            },
 3655                            None,
 3656                            window,
 3657                            cx,
 3658                        )
 3659                    })?
 3660                    .await;
 3661                for result in results.into_iter().flatten() {
 3662                    result.log_err();
 3663                }
 3664            }
 3665            anyhow::Ok(())
 3666        })
 3667        .detach_and_log_err(cx);
 3668    }
 3669
 3670    pub fn project_path_for_path(
 3671        project: Entity<Project>,
 3672        abs_path: &Path,
 3673        visible: bool,
 3674        cx: &mut App,
 3675    ) -> Task<Result<(Entity<Worktree>, ProjectPath)>> {
 3676        let entry = project.update(cx, |project, cx| {
 3677            project.find_or_create_worktree(abs_path, visible, cx)
 3678        });
 3679        cx.spawn(async move |cx| {
 3680            let (worktree, path) = entry.await?;
 3681            let worktree_id = worktree.read_with(cx, |t, _| t.id());
 3682            Ok((worktree, ProjectPath { worktree_id, path }))
 3683        })
 3684    }
 3685
 3686    pub fn items<'a>(&'a self, cx: &'a App) -> impl 'a + Iterator<Item = &'a Box<dyn ItemHandle>> {
 3687        self.panes.iter().flat_map(|pane| pane.read(cx).items())
 3688    }
 3689
 3690    pub fn item_of_type<T: Item>(&self, cx: &App) -> Option<Entity<T>> {
 3691        self.items_of_type(cx).max_by_key(|item| item.item_id())
 3692    }
 3693
 3694    pub fn items_of_type<'a, T: Item>(
 3695        &'a self,
 3696        cx: &'a App,
 3697    ) -> impl 'a + Iterator<Item = Entity<T>> {
 3698        self.panes
 3699            .iter()
 3700            .flat_map(|pane| pane.read(cx).items_of_type())
 3701    }
 3702
 3703    pub fn active_item(&self, cx: &App) -> Option<Box<dyn ItemHandle>> {
 3704        self.active_pane().read(cx).active_item()
 3705    }
 3706
 3707    pub fn active_item_as<I: 'static>(&self, cx: &App) -> Option<Entity<I>> {
 3708        let item = self.active_item(cx)?;
 3709        item.to_any_view().downcast::<I>().ok()
 3710    }
 3711
 3712    fn active_project_path(&self, cx: &App) -> Option<ProjectPath> {
 3713        self.active_item(cx).and_then(|item| item.project_path(cx))
 3714    }
 3715
 3716    pub fn most_recent_active_path(&self, cx: &App) -> Option<PathBuf> {
 3717        self.recent_navigation_history_iter(cx)
 3718            .filter_map(|(path, abs_path)| {
 3719                let worktree = self
 3720                    .project
 3721                    .read(cx)
 3722                    .worktree_for_id(path.worktree_id, cx)?;
 3723                if worktree.read(cx).is_visible() {
 3724                    abs_path
 3725                } else {
 3726                    None
 3727                }
 3728            })
 3729            .next()
 3730    }
 3731
 3732    pub fn save_active_item(
 3733        &mut self,
 3734        save_intent: SaveIntent,
 3735        window: &mut Window,
 3736        cx: &mut App,
 3737    ) -> Task<Result<()>> {
 3738        let project = self.project.clone();
 3739        let pane = self.active_pane();
 3740        let item = pane.read(cx).active_item();
 3741        let pane = pane.downgrade();
 3742
 3743        window.spawn(cx, async move |cx| {
 3744            if let Some(item) = item {
 3745                Pane::save_item(project, &pane, item.as_ref(), save_intent, cx)
 3746                    .await
 3747                    .map(|_| ())
 3748            } else {
 3749                Ok(())
 3750            }
 3751        })
 3752    }
 3753
 3754    pub fn close_inactive_items_and_panes(
 3755        &mut self,
 3756        action: &CloseInactiveTabsAndPanes,
 3757        window: &mut Window,
 3758        cx: &mut Context<Self>,
 3759    ) {
 3760        if let Some(task) = self.close_all_internal(
 3761            true,
 3762            action.save_intent.unwrap_or(SaveIntent::Close),
 3763            window,
 3764            cx,
 3765        ) {
 3766            task.detach_and_log_err(cx)
 3767        }
 3768    }
 3769
 3770    pub fn close_all_items_and_panes(
 3771        &mut self,
 3772        action: &CloseAllItemsAndPanes,
 3773        window: &mut Window,
 3774        cx: &mut Context<Self>,
 3775    ) {
 3776        if let Some(task) = self.close_all_internal(
 3777            false,
 3778            action.save_intent.unwrap_or(SaveIntent::Close),
 3779            window,
 3780            cx,
 3781        ) {
 3782            task.detach_and_log_err(cx)
 3783        }
 3784    }
 3785
 3786    /// Closes the active item across all panes.
 3787    pub fn close_item_in_all_panes(
 3788        &mut self,
 3789        action: &CloseItemInAllPanes,
 3790        window: &mut Window,
 3791        cx: &mut Context<Self>,
 3792    ) {
 3793        let Some(active_item) = self.active_pane().read(cx).active_item() else {
 3794            return;
 3795        };
 3796
 3797        let save_intent = action.save_intent.unwrap_or(SaveIntent::Close);
 3798        let close_pinned = action.close_pinned;
 3799
 3800        if let Some(project_path) = active_item.project_path(cx) {
 3801            self.close_items_with_project_path(
 3802                &project_path,
 3803                save_intent,
 3804                close_pinned,
 3805                window,
 3806                cx,
 3807            );
 3808        } else if close_pinned || !self.active_pane().read(cx).is_active_item_pinned() {
 3809            let item_id = active_item.item_id();
 3810            self.active_pane().update(cx, |pane, cx| {
 3811                pane.close_item_by_id(item_id, save_intent, window, cx)
 3812                    .detach_and_log_err(cx);
 3813            });
 3814        }
 3815    }
 3816
 3817    /// Closes all items with the given project path across all panes.
 3818    pub fn close_items_with_project_path(
 3819        &mut self,
 3820        project_path: &ProjectPath,
 3821        save_intent: SaveIntent,
 3822        close_pinned: bool,
 3823        window: &mut Window,
 3824        cx: &mut Context<Self>,
 3825    ) {
 3826        let panes = self.panes().to_vec();
 3827        for pane in panes {
 3828            pane.update(cx, |pane, cx| {
 3829                pane.close_items_for_project_path(
 3830                    project_path,
 3831                    save_intent,
 3832                    close_pinned,
 3833                    window,
 3834                    cx,
 3835                )
 3836                .detach_and_log_err(cx);
 3837            });
 3838        }
 3839    }
 3840
 3841    fn close_all_internal(
 3842        &mut self,
 3843        retain_active_pane: bool,
 3844        save_intent: SaveIntent,
 3845        window: &mut Window,
 3846        cx: &mut Context<Self>,
 3847    ) -> Option<Task<Result<()>>> {
 3848        let current_pane = self.active_pane();
 3849
 3850        let mut tasks = Vec::new();
 3851
 3852        if retain_active_pane {
 3853            let current_pane_close = current_pane.update(cx, |pane, cx| {
 3854                pane.close_other_items(
 3855                    &CloseOtherItems {
 3856                        save_intent: None,
 3857                        close_pinned: false,
 3858                    },
 3859                    None,
 3860                    window,
 3861                    cx,
 3862                )
 3863            });
 3864
 3865            tasks.push(current_pane_close);
 3866        }
 3867
 3868        for pane in self.panes() {
 3869            if retain_active_pane && pane.entity_id() == current_pane.entity_id() {
 3870                continue;
 3871            }
 3872
 3873            let close_pane_items = pane.update(cx, |pane: &mut Pane, cx| {
 3874                pane.close_all_items(
 3875                    &CloseAllItems {
 3876                        save_intent: Some(save_intent),
 3877                        close_pinned: false,
 3878                    },
 3879                    window,
 3880                    cx,
 3881                )
 3882            });
 3883
 3884            tasks.push(close_pane_items)
 3885        }
 3886
 3887        if tasks.is_empty() {
 3888            None
 3889        } else {
 3890            Some(cx.spawn_in(window, async move |_, _| {
 3891                for task in tasks {
 3892                    task.await?
 3893                }
 3894                Ok(())
 3895            }))
 3896        }
 3897    }
 3898
 3899    pub fn is_dock_at_position_open(&self, position: DockPosition, cx: &mut Context<Self>) -> bool {
 3900        self.dock_at_position(position).read(cx).is_open()
 3901    }
 3902
 3903    pub fn toggle_dock(
 3904        &mut self,
 3905        dock_side: DockPosition,
 3906        window: &mut Window,
 3907        cx: &mut Context<Self>,
 3908    ) {
 3909        let mut focus_center = false;
 3910        let mut reveal_dock = false;
 3911
 3912        let other_is_zoomed = self.zoomed.is_some() && self.zoomed_position != Some(dock_side);
 3913        let was_visible = self.is_dock_at_position_open(dock_side, cx) && !other_is_zoomed;
 3914
 3915        if let Some(panel) = self.dock_at_position(dock_side).read(cx).active_panel() {
 3916            telemetry::event!(
 3917                "Panel Button Clicked",
 3918                name = panel.persistent_name(),
 3919                toggle_state = !was_visible
 3920            );
 3921        }
 3922        if was_visible {
 3923            self.save_open_dock_positions(cx);
 3924        }
 3925
 3926        let dock = self.dock_at_position(dock_side);
 3927        dock.update(cx, |dock, cx| {
 3928            dock.set_open(!was_visible, window, cx);
 3929
 3930            if dock.active_panel().is_none() {
 3931                let Some(panel_ix) = dock
 3932                    .first_enabled_panel_idx(cx)
 3933                    .log_with_level(log::Level::Info)
 3934                else {
 3935                    return;
 3936                };
 3937                dock.activate_panel(panel_ix, window, cx);
 3938            }
 3939
 3940            if let Some(active_panel) = dock.active_panel() {
 3941                if was_visible {
 3942                    if active_panel
 3943                        .panel_focus_handle(cx)
 3944                        .contains_focused(window, cx)
 3945                    {
 3946                        focus_center = true;
 3947                    }
 3948                } else {
 3949                    let focus_handle = &active_panel.panel_focus_handle(cx);
 3950                    window.focus(focus_handle, cx);
 3951                    reveal_dock = true;
 3952                }
 3953            }
 3954        });
 3955
 3956        if reveal_dock {
 3957            self.dismiss_zoomed_items_to_reveal(Some(dock_side), window, cx);
 3958        }
 3959
 3960        if focus_center {
 3961            self.active_pane
 3962                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx))
 3963        }
 3964
 3965        cx.notify();
 3966        self.serialize_workspace(window, cx);
 3967    }
 3968
 3969    fn active_dock(&self, window: &Window, cx: &Context<Self>) -> Option<&Entity<Dock>> {
 3970        self.all_docks().into_iter().find(|&dock| {
 3971            dock.read(cx).is_open() && dock.focus_handle(cx).contains_focused(window, cx)
 3972        })
 3973    }
 3974
 3975    fn close_active_dock(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
 3976        if let Some(dock) = self.active_dock(window, cx).cloned() {
 3977            self.save_open_dock_positions(cx);
 3978            dock.update(cx, |dock, cx| {
 3979                dock.set_open(false, window, cx);
 3980            });
 3981            return true;
 3982        }
 3983        false
 3984    }
 3985
 3986    pub fn close_all_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3987        self.save_open_dock_positions(cx);
 3988        for dock in self.all_docks() {
 3989            dock.update(cx, |dock, cx| {
 3990                dock.set_open(false, window, cx);
 3991            });
 3992        }
 3993
 3994        cx.focus_self(window);
 3995        cx.notify();
 3996        self.serialize_workspace(window, cx);
 3997    }
 3998
 3999    fn get_open_dock_positions(&self, cx: &Context<Self>) -> Vec<DockPosition> {
 4000        self.all_docks()
 4001            .into_iter()
 4002            .filter_map(|dock| {
 4003                let dock_ref = dock.read(cx);
 4004                if dock_ref.is_open() {
 4005                    Some(dock_ref.position())
 4006                } else {
 4007                    None
 4008                }
 4009            })
 4010            .collect()
 4011    }
 4012
 4013    /// Saves the positions of currently open docks.
 4014    ///
 4015    /// Updates `last_open_dock_positions` with positions of all currently open
 4016    /// docks, to later be restored by the 'Toggle All Docks' action.
 4017    fn save_open_dock_positions(&mut self, cx: &mut Context<Self>) {
 4018        let open_dock_positions = self.get_open_dock_positions(cx);
 4019        if !open_dock_positions.is_empty() {
 4020            self.last_open_dock_positions = open_dock_positions;
 4021        }
 4022    }
 4023
 4024    /// Toggles all docks between open and closed states.
 4025    ///
 4026    /// If any docks are open, closes all and remembers their positions. If all
 4027    /// docks are closed, restores the last remembered dock configuration.
 4028    fn toggle_all_docks(
 4029        &mut self,
 4030        _: &ToggleAllDocks,
 4031        window: &mut Window,
 4032        cx: &mut Context<Self>,
 4033    ) {
 4034        let open_dock_positions = self.get_open_dock_positions(cx);
 4035
 4036        if !open_dock_positions.is_empty() {
 4037            self.close_all_docks(window, cx);
 4038        } else if !self.last_open_dock_positions.is_empty() {
 4039            self.restore_last_open_docks(window, cx);
 4040        }
 4041    }
 4042
 4043    /// Reopens docks from the most recently remembered configuration.
 4044    ///
 4045    /// Opens all docks whose positions are stored in `last_open_dock_positions`
 4046    /// and clears the stored positions.
 4047    fn restore_last_open_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4048        let positions_to_open = std::mem::take(&mut self.last_open_dock_positions);
 4049
 4050        for position in positions_to_open {
 4051            let dock = self.dock_at_position(position);
 4052            dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
 4053        }
 4054
 4055        cx.focus_self(window);
 4056        cx.notify();
 4057        self.serialize_workspace(window, cx);
 4058    }
 4059
 4060    /// Transfer focus to the panel of the given type.
 4061    pub fn focus_panel<T: Panel>(
 4062        &mut self,
 4063        window: &mut Window,
 4064        cx: &mut Context<Self>,
 4065    ) -> Option<Entity<T>> {
 4066        let panel = self.focus_or_unfocus_panel::<T>(window, cx, &mut |_, _, _| true)?;
 4067        panel.to_any().downcast().ok()
 4068    }
 4069
 4070    /// Focus the panel of the given type if it isn't already focused. If it is
 4071    /// already focused, then transfer focus back to the workspace center.
 4072    /// When the `close_panel_on_toggle` setting is enabled, also closes the
 4073    /// panel when transferring focus back to the center.
 4074    pub fn toggle_panel_focus<T: Panel>(
 4075        &mut self,
 4076        window: &mut Window,
 4077        cx: &mut Context<Self>,
 4078    ) -> bool {
 4079        let mut did_focus_panel = false;
 4080        self.focus_or_unfocus_panel::<T>(window, cx, &mut |panel, window, cx| {
 4081            did_focus_panel = !panel.panel_focus_handle(cx).contains_focused(window, cx);
 4082            did_focus_panel
 4083        });
 4084
 4085        if !did_focus_panel && WorkspaceSettings::get_global(cx).close_panel_on_toggle {
 4086            self.close_panel::<T>(window, cx);
 4087        }
 4088
 4089        telemetry::event!(
 4090            "Panel Button Clicked",
 4091            name = T::persistent_name(),
 4092            toggle_state = did_focus_panel
 4093        );
 4094
 4095        did_focus_panel
 4096    }
 4097
 4098    pub fn focus_center_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4099        if let Some(item) = self.active_item(cx) {
 4100            item.item_focus_handle(cx).focus(window, cx);
 4101        } else {
 4102            log::error!("Could not find a focus target when switching focus to the center panes",);
 4103        }
 4104    }
 4105
 4106    pub fn activate_panel_for_proto_id(
 4107        &mut self,
 4108        panel_id: PanelId,
 4109        window: &mut Window,
 4110        cx: &mut Context<Self>,
 4111    ) -> Option<Arc<dyn PanelHandle>> {
 4112        let mut panel = None;
 4113        for dock in self.all_docks() {
 4114            if let Some(panel_index) = dock.read(cx).panel_index_for_proto_id(panel_id) {
 4115                panel = dock.update(cx, |dock, cx| {
 4116                    dock.activate_panel(panel_index, window, cx);
 4117                    dock.set_open(true, window, cx);
 4118                    dock.active_panel().cloned()
 4119                });
 4120                break;
 4121            }
 4122        }
 4123
 4124        if panel.is_some() {
 4125            cx.notify();
 4126            self.serialize_workspace(window, cx);
 4127        }
 4128
 4129        panel
 4130    }
 4131
 4132    /// Focus or unfocus the given panel type, depending on the given callback.
 4133    fn focus_or_unfocus_panel<T: Panel>(
 4134        &mut self,
 4135        window: &mut Window,
 4136        cx: &mut Context<Self>,
 4137        should_focus: &mut dyn FnMut(&dyn PanelHandle, &mut Window, &mut Context<Dock>) -> bool,
 4138    ) -> Option<Arc<dyn PanelHandle>> {
 4139        let mut result_panel = None;
 4140        let mut serialize = false;
 4141        for dock in self.all_docks() {
 4142            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 4143                let mut focus_center = false;
 4144                let panel = dock.update(cx, |dock, cx| {
 4145                    dock.activate_panel(panel_index, window, cx);
 4146
 4147                    let panel = dock.active_panel().cloned();
 4148                    if let Some(panel) = panel.as_ref() {
 4149                        if should_focus(&**panel, window, cx) {
 4150                            dock.set_open(true, window, cx);
 4151                            panel.panel_focus_handle(cx).focus(window, cx);
 4152                        } else {
 4153                            focus_center = true;
 4154                        }
 4155                    }
 4156                    panel
 4157                });
 4158
 4159                if focus_center {
 4160                    self.active_pane
 4161                        .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx))
 4162                }
 4163
 4164                result_panel = panel;
 4165                serialize = true;
 4166                break;
 4167            }
 4168        }
 4169
 4170        if serialize {
 4171            self.serialize_workspace(window, cx);
 4172        }
 4173
 4174        cx.notify();
 4175        result_panel
 4176    }
 4177
 4178    /// Open the panel of the given type
 4179    pub fn open_panel<T: Panel>(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4180        for dock in self.all_docks() {
 4181            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 4182                dock.update(cx, |dock, cx| {
 4183                    dock.activate_panel(panel_index, window, cx);
 4184                    dock.set_open(true, window, cx);
 4185                });
 4186            }
 4187        }
 4188    }
 4189
 4190    pub fn close_panel<T: Panel>(&self, window: &mut Window, cx: &mut Context<Self>) {
 4191        for dock in self.all_docks().iter() {
 4192            dock.update(cx, |dock, cx| {
 4193                if dock.panel::<T>().is_some() {
 4194                    dock.set_open(false, window, cx)
 4195                }
 4196            })
 4197        }
 4198    }
 4199
 4200    pub fn panel<T: Panel>(&self, cx: &App) -> Option<Entity<T>> {
 4201        self.all_docks()
 4202            .iter()
 4203            .find_map(|dock| dock.read(cx).panel::<T>())
 4204    }
 4205
 4206    fn dismiss_zoomed_items_to_reveal(
 4207        &mut self,
 4208        dock_to_reveal: Option<DockPosition>,
 4209        window: &mut Window,
 4210        cx: &mut Context<Self>,
 4211    ) {
 4212        // If a center pane is zoomed, unzoom it.
 4213        for pane in &self.panes {
 4214            if pane != &self.active_pane || dock_to_reveal.is_some() {
 4215                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 4216            }
 4217        }
 4218
 4219        // If another dock is zoomed, hide it.
 4220        let mut focus_center = false;
 4221        for dock in self.all_docks() {
 4222            dock.update(cx, |dock, cx| {
 4223                if Some(dock.position()) != dock_to_reveal
 4224                    && let Some(panel) = dock.active_panel()
 4225                    && panel.is_zoomed(window, cx)
 4226                {
 4227                    focus_center |= panel.panel_focus_handle(cx).contains_focused(window, cx);
 4228                    dock.set_open(false, window, cx);
 4229                }
 4230            });
 4231        }
 4232
 4233        if focus_center {
 4234            self.active_pane
 4235                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx))
 4236        }
 4237
 4238        if self.zoomed_position != dock_to_reveal {
 4239            self.zoomed = None;
 4240            self.zoomed_position = None;
 4241            cx.emit(Event::ZoomChanged);
 4242        }
 4243
 4244        cx.notify();
 4245    }
 4246
 4247    fn add_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 4248        let pane = cx.new(|cx| {
 4249            let mut pane = Pane::new(
 4250                self.weak_handle(),
 4251                self.project.clone(),
 4252                self.pane_history_timestamp.clone(),
 4253                None,
 4254                NewFile.boxed_clone(),
 4255                true,
 4256                window,
 4257                cx,
 4258            );
 4259            pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 4260            pane
 4261        });
 4262        cx.subscribe_in(&pane, window, Self::handle_pane_event)
 4263            .detach();
 4264        self.panes.push(pane.clone());
 4265
 4266        window.focus(&pane.focus_handle(cx), cx);
 4267
 4268        cx.emit(Event::PaneAdded(pane.clone()));
 4269        pane
 4270    }
 4271
 4272    pub fn add_item_to_center(
 4273        &mut self,
 4274        item: Box<dyn ItemHandle>,
 4275        window: &mut Window,
 4276        cx: &mut Context<Self>,
 4277    ) -> bool {
 4278        if let Some(center_pane) = self.last_active_center_pane.clone() {
 4279            if let Some(center_pane) = center_pane.upgrade() {
 4280                center_pane.update(cx, |pane, cx| {
 4281                    pane.add_item(item, true, true, None, window, cx)
 4282                });
 4283                true
 4284            } else {
 4285                false
 4286            }
 4287        } else {
 4288            false
 4289        }
 4290    }
 4291
 4292    pub fn add_item_to_active_pane(
 4293        &mut self,
 4294        item: Box<dyn ItemHandle>,
 4295        destination_index: Option<usize>,
 4296        focus_item: bool,
 4297        window: &mut Window,
 4298        cx: &mut App,
 4299    ) {
 4300        self.add_item(
 4301            self.active_pane.clone(),
 4302            item,
 4303            destination_index,
 4304            false,
 4305            focus_item,
 4306            window,
 4307            cx,
 4308        )
 4309    }
 4310
 4311    pub fn add_item(
 4312        &mut self,
 4313        pane: Entity<Pane>,
 4314        item: Box<dyn ItemHandle>,
 4315        destination_index: Option<usize>,
 4316        activate_pane: bool,
 4317        focus_item: bool,
 4318        window: &mut Window,
 4319        cx: &mut App,
 4320    ) {
 4321        pane.update(cx, |pane, cx| {
 4322            pane.add_item(
 4323                item,
 4324                activate_pane,
 4325                focus_item,
 4326                destination_index,
 4327                window,
 4328                cx,
 4329            )
 4330        });
 4331    }
 4332
 4333    pub fn split_item(
 4334        &mut self,
 4335        split_direction: SplitDirection,
 4336        item: Box<dyn ItemHandle>,
 4337        window: &mut Window,
 4338        cx: &mut Context<Self>,
 4339    ) {
 4340        let new_pane = self.split_pane(self.active_pane.clone(), split_direction, window, cx);
 4341        self.add_item(new_pane, item, None, true, true, window, cx);
 4342    }
 4343
 4344    pub fn open_abs_path(
 4345        &mut self,
 4346        abs_path: PathBuf,
 4347        options: OpenOptions,
 4348        window: &mut Window,
 4349        cx: &mut Context<Self>,
 4350    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4351        cx.spawn_in(window, async move |workspace, cx| {
 4352            let open_paths_task_result = workspace
 4353                .update_in(cx, |workspace, window, cx| {
 4354                    workspace.open_paths(vec![abs_path.clone()], options, None, window, cx)
 4355                })
 4356                .with_context(|| format!("open abs path {abs_path:?} task spawn"))?
 4357                .await;
 4358            anyhow::ensure!(
 4359                open_paths_task_result.len() == 1,
 4360                "open abs path {abs_path:?} task returned incorrect number of results"
 4361            );
 4362            match open_paths_task_result
 4363                .into_iter()
 4364                .next()
 4365                .expect("ensured single task result")
 4366            {
 4367                Some(open_result) => {
 4368                    open_result.with_context(|| format!("open abs path {abs_path:?} task join"))
 4369                }
 4370                None => anyhow::bail!("open abs path {abs_path:?} task returned None"),
 4371            }
 4372        })
 4373    }
 4374
 4375    pub fn split_abs_path(
 4376        &mut self,
 4377        abs_path: PathBuf,
 4378        visible: bool,
 4379        window: &mut Window,
 4380        cx: &mut Context<Self>,
 4381    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4382        let project_path_task =
 4383            Workspace::project_path_for_path(self.project.clone(), &abs_path, visible, cx);
 4384        cx.spawn_in(window, async move |this, cx| {
 4385            let (_, path) = project_path_task.await?;
 4386            this.update_in(cx, |this, window, cx| this.split_path(path, window, cx))?
 4387                .await
 4388        })
 4389    }
 4390
 4391    pub fn open_path(
 4392        &mut self,
 4393        path: impl Into<ProjectPath>,
 4394        pane: Option<WeakEntity<Pane>>,
 4395        focus_item: bool,
 4396        window: &mut Window,
 4397        cx: &mut App,
 4398    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4399        self.open_path_preview(path, pane, focus_item, false, true, window, cx)
 4400    }
 4401
 4402    pub fn open_path_preview(
 4403        &mut self,
 4404        path: impl Into<ProjectPath>,
 4405        pane: Option<WeakEntity<Pane>>,
 4406        focus_item: bool,
 4407        allow_preview: bool,
 4408        activate: bool,
 4409        window: &mut Window,
 4410        cx: &mut App,
 4411    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4412        let pane = pane.unwrap_or_else(|| {
 4413            self.last_active_center_pane.clone().unwrap_or_else(|| {
 4414                self.panes
 4415                    .first()
 4416                    .expect("There must be an active pane")
 4417                    .downgrade()
 4418            })
 4419        });
 4420
 4421        let project_path = path.into();
 4422        let task = self.load_path(project_path.clone(), window, cx);
 4423        window.spawn(cx, async move |cx| {
 4424            let (project_entry_id, build_item) = task.await?;
 4425
 4426            pane.update_in(cx, |pane, window, cx| {
 4427                pane.open_item(
 4428                    project_entry_id,
 4429                    project_path,
 4430                    focus_item,
 4431                    allow_preview,
 4432                    activate,
 4433                    None,
 4434                    window,
 4435                    cx,
 4436                    build_item,
 4437                )
 4438            })
 4439        })
 4440    }
 4441
 4442    pub fn split_path(
 4443        &mut self,
 4444        path: impl Into<ProjectPath>,
 4445        window: &mut Window,
 4446        cx: &mut Context<Self>,
 4447    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4448        self.split_path_preview(path, false, None, window, cx)
 4449    }
 4450
 4451    pub fn split_path_preview(
 4452        &mut self,
 4453        path: impl Into<ProjectPath>,
 4454        allow_preview: bool,
 4455        split_direction: Option<SplitDirection>,
 4456        window: &mut Window,
 4457        cx: &mut Context<Self>,
 4458    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 4459        let pane = self.last_active_center_pane.clone().unwrap_or_else(|| {
 4460            self.panes
 4461                .first()
 4462                .expect("There must be an active pane")
 4463                .downgrade()
 4464        });
 4465
 4466        if let Member::Pane(center_pane) = &self.center.root
 4467            && center_pane.read(cx).items_len() == 0
 4468        {
 4469            return self.open_path(path, Some(pane), true, window, cx);
 4470        }
 4471
 4472        let project_path = path.into();
 4473        let task = self.load_path(project_path.clone(), window, cx);
 4474        cx.spawn_in(window, async move |this, cx| {
 4475            let (project_entry_id, build_item) = task.await?;
 4476            this.update_in(cx, move |this, window, cx| -> Option<_> {
 4477                let pane = pane.upgrade()?;
 4478                let new_pane = this.split_pane(
 4479                    pane,
 4480                    split_direction.unwrap_or(SplitDirection::Right),
 4481                    window,
 4482                    cx,
 4483                );
 4484                new_pane.update(cx, |new_pane, cx| {
 4485                    Some(new_pane.open_item(
 4486                        project_entry_id,
 4487                        project_path,
 4488                        true,
 4489                        allow_preview,
 4490                        true,
 4491                        None,
 4492                        window,
 4493                        cx,
 4494                        build_item,
 4495                    ))
 4496                })
 4497            })
 4498            .map(|option| option.context("pane was dropped"))?
 4499        })
 4500    }
 4501
 4502    fn load_path(
 4503        &mut self,
 4504        path: ProjectPath,
 4505        window: &mut Window,
 4506        cx: &mut App,
 4507    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
 4508        let registry = cx.default_global::<ProjectItemRegistry>().clone();
 4509        registry.open_path(self.project(), &path, window, cx)
 4510    }
 4511
 4512    pub fn find_project_item<T>(
 4513        &self,
 4514        pane: &Entity<Pane>,
 4515        project_item: &Entity<T::Item>,
 4516        cx: &App,
 4517    ) -> Option<Entity<T>>
 4518    where
 4519        T: ProjectItem,
 4520    {
 4521        use project::ProjectItem as _;
 4522        let project_item = project_item.read(cx);
 4523        let entry_id = project_item.entry_id(cx);
 4524        let project_path = project_item.project_path(cx);
 4525
 4526        let mut item = None;
 4527        if let Some(entry_id) = entry_id {
 4528            item = pane.read(cx).item_for_entry(entry_id, cx);
 4529        }
 4530        if item.is_none()
 4531            && let Some(project_path) = project_path
 4532        {
 4533            item = pane.read(cx).item_for_path(project_path, cx);
 4534        }
 4535
 4536        item.and_then(|item| item.downcast::<T>())
 4537    }
 4538
 4539    pub fn is_project_item_open<T>(
 4540        &self,
 4541        pane: &Entity<Pane>,
 4542        project_item: &Entity<T::Item>,
 4543        cx: &App,
 4544    ) -> bool
 4545    where
 4546        T: ProjectItem,
 4547    {
 4548        self.find_project_item::<T>(pane, project_item, cx)
 4549            .is_some()
 4550    }
 4551
 4552    pub fn open_project_item<T>(
 4553        &mut self,
 4554        pane: Entity<Pane>,
 4555        project_item: Entity<T::Item>,
 4556        activate_pane: bool,
 4557        focus_item: bool,
 4558        keep_old_preview: bool,
 4559        allow_new_preview: bool,
 4560        window: &mut Window,
 4561        cx: &mut Context<Self>,
 4562    ) -> Entity<T>
 4563    where
 4564        T: ProjectItem,
 4565    {
 4566        let old_item_id = pane.read(cx).active_item().map(|item| item.item_id());
 4567
 4568        if let Some(item) = self.find_project_item(&pane, &project_item, cx) {
 4569            if !keep_old_preview
 4570                && let Some(old_id) = old_item_id
 4571                && old_id != item.item_id()
 4572            {
 4573                // switching to a different item, so unpreview old active item
 4574                pane.update(cx, |pane, _| {
 4575                    pane.unpreview_item_if_preview(old_id);
 4576                });
 4577            }
 4578
 4579            self.activate_item(&item, activate_pane, focus_item, window, cx);
 4580            if !allow_new_preview {
 4581                pane.update(cx, |pane, _| {
 4582                    pane.unpreview_item_if_preview(item.item_id());
 4583                });
 4584            }
 4585            return item;
 4586        }
 4587
 4588        let item = pane.update(cx, |pane, cx| {
 4589            cx.new(|cx| {
 4590                T::for_project_item(self.project().clone(), Some(pane), project_item, window, cx)
 4591            })
 4592        });
 4593        let mut destination_index = None;
 4594        pane.update(cx, |pane, cx| {
 4595            if !keep_old_preview && let Some(old_id) = old_item_id {
 4596                pane.unpreview_item_if_preview(old_id);
 4597            }
 4598            if allow_new_preview {
 4599                destination_index = pane.replace_preview_item_id(item.item_id(), window, cx);
 4600            }
 4601        });
 4602
 4603        self.add_item(
 4604            pane,
 4605            Box::new(item.clone()),
 4606            destination_index,
 4607            activate_pane,
 4608            focus_item,
 4609            window,
 4610            cx,
 4611        );
 4612        item
 4613    }
 4614
 4615    pub fn open_shared_screen(
 4616        &mut self,
 4617        peer_id: PeerId,
 4618        window: &mut Window,
 4619        cx: &mut Context<Self>,
 4620    ) {
 4621        if let Some(shared_screen) =
 4622            self.shared_screen_for_peer(peer_id, &self.active_pane, window, cx)
 4623        {
 4624            self.active_pane.update(cx, |pane, cx| {
 4625                pane.add_item(Box::new(shared_screen), false, true, None, window, cx)
 4626            });
 4627        }
 4628    }
 4629
 4630    pub fn activate_item(
 4631        &mut self,
 4632        item: &dyn ItemHandle,
 4633        activate_pane: bool,
 4634        focus_item: bool,
 4635        window: &mut Window,
 4636        cx: &mut App,
 4637    ) -> bool {
 4638        let result = self.panes.iter().find_map(|pane| {
 4639            pane.read(cx)
 4640                .index_for_item(item)
 4641                .map(|ix| (pane.clone(), ix))
 4642        });
 4643        if let Some((pane, ix)) = result {
 4644            pane.update(cx, |pane, cx| {
 4645                pane.activate_item(ix, activate_pane, focus_item, window, cx)
 4646            });
 4647            true
 4648        } else {
 4649            false
 4650        }
 4651    }
 4652
 4653    fn activate_pane_at_index(
 4654        &mut self,
 4655        action: &ActivatePane,
 4656        window: &mut Window,
 4657        cx: &mut Context<Self>,
 4658    ) {
 4659        let panes = self.center.panes();
 4660        if let Some(pane) = panes.get(action.0).map(|p| (*p).clone()) {
 4661            window.focus(&pane.focus_handle(cx), cx);
 4662        } else {
 4663            self.split_and_clone(self.active_pane.clone(), SplitDirection::Right, window, cx)
 4664                .detach();
 4665        }
 4666    }
 4667
 4668    fn move_item_to_pane_at_index(
 4669        &mut self,
 4670        action: &MoveItemToPane,
 4671        window: &mut Window,
 4672        cx: &mut Context<Self>,
 4673    ) {
 4674        let panes = self.center.panes();
 4675        let destination = match panes.get(action.destination) {
 4676            Some(&destination) => destination.clone(),
 4677            None => {
 4678                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 4679                    return;
 4680                }
 4681                let direction = SplitDirection::Right;
 4682                let split_off_pane = self
 4683                    .find_pane_in_direction(direction, cx)
 4684                    .unwrap_or_else(|| self.active_pane.clone());
 4685                let new_pane = self.add_pane(window, cx);
 4686                self.center.split(&split_off_pane, &new_pane, direction, cx);
 4687                new_pane
 4688            }
 4689        };
 4690
 4691        if action.clone {
 4692            if self
 4693                .active_pane
 4694                .read(cx)
 4695                .active_item()
 4696                .is_some_and(|item| item.can_split(cx))
 4697            {
 4698                clone_active_item(
 4699                    self.database_id(),
 4700                    &self.active_pane,
 4701                    &destination,
 4702                    action.focus,
 4703                    window,
 4704                    cx,
 4705                );
 4706                return;
 4707            }
 4708        }
 4709        move_active_item(
 4710            &self.active_pane,
 4711            &destination,
 4712            action.focus,
 4713            true,
 4714            window,
 4715            cx,
 4716        )
 4717    }
 4718
 4719    pub fn activate_next_pane(&mut self, window: &mut Window, cx: &mut App) {
 4720        let panes = self.center.panes();
 4721        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 4722            let next_ix = (ix + 1) % panes.len();
 4723            let next_pane = panes[next_ix].clone();
 4724            window.focus(&next_pane.focus_handle(cx), cx);
 4725        }
 4726    }
 4727
 4728    pub fn activate_previous_pane(&mut self, window: &mut Window, cx: &mut App) {
 4729        let panes = self.center.panes();
 4730        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 4731            let prev_ix = cmp::min(ix.wrapping_sub(1), panes.len() - 1);
 4732            let prev_pane = panes[prev_ix].clone();
 4733            window.focus(&prev_pane.focus_handle(cx), cx);
 4734        }
 4735    }
 4736
 4737    pub fn activate_last_pane(&mut self, window: &mut Window, cx: &mut App) {
 4738        let last_pane = self.center.last_pane();
 4739        window.focus(&last_pane.focus_handle(cx), cx);
 4740    }
 4741
 4742    pub fn activate_pane_in_direction(
 4743        &mut self,
 4744        direction: SplitDirection,
 4745        window: &mut Window,
 4746        cx: &mut App,
 4747    ) {
 4748        use ActivateInDirectionTarget as Target;
 4749        enum Origin {
 4750            Sidebar,
 4751            LeftDock,
 4752            RightDock,
 4753            BottomDock,
 4754            Center,
 4755        }
 4756
 4757        let origin: Origin = if self
 4758            .sidebar_focus_handle
 4759            .as_ref()
 4760            .is_some_and(|h| h.contains_focused(window, cx))
 4761        {
 4762            Origin::Sidebar
 4763        } else {
 4764            [
 4765                (&self.left_dock, Origin::LeftDock),
 4766                (&self.right_dock, Origin::RightDock),
 4767                (&self.bottom_dock, Origin::BottomDock),
 4768            ]
 4769            .into_iter()
 4770            .find_map(|(dock, origin)| {
 4771                if dock.focus_handle(cx).contains_focused(window, cx) && dock.read(cx).is_open() {
 4772                    Some(origin)
 4773                } else {
 4774                    None
 4775                }
 4776            })
 4777            .unwrap_or(Origin::Center)
 4778        };
 4779
 4780        let get_last_active_pane = || {
 4781            let pane = self
 4782                .last_active_center_pane
 4783                .clone()
 4784                .unwrap_or_else(|| {
 4785                    self.panes
 4786                        .first()
 4787                        .expect("There must be an active pane")
 4788                        .downgrade()
 4789                })
 4790                .upgrade()?;
 4791            (pane.read(cx).items_len() != 0).then_some(pane)
 4792        };
 4793
 4794        let try_dock =
 4795            |dock: &Entity<Dock>| dock.read(cx).is_open().then(|| Target::Dock(dock.clone()));
 4796
 4797        let sidebar_target = self
 4798            .sidebar_focus_handle
 4799            .as_ref()
 4800            .map(|h| Target::Sidebar(h.clone()));
 4801
 4802        let target = match (origin, direction) {
 4803            // From the sidebar, only Right navigates into the workspace.
 4804            (Origin::Sidebar, SplitDirection::Right) => try_dock(&self.left_dock)
 4805                .or_else(|| get_last_active_pane().map(Target::Pane))
 4806                .or_else(|| try_dock(&self.bottom_dock))
 4807                .or_else(|| try_dock(&self.right_dock)),
 4808
 4809            (Origin::Sidebar, _) => None,
 4810
 4811            // We're in the center, so we first try to go to a different pane,
 4812            // otherwise try to go to a dock.
 4813            (Origin::Center, direction) => {
 4814                if let Some(pane) = self.find_pane_in_direction(direction, cx) {
 4815                    Some(Target::Pane(pane))
 4816                } else {
 4817                    match direction {
 4818                        SplitDirection::Up => None,
 4819                        SplitDirection::Down => try_dock(&self.bottom_dock),
 4820                        SplitDirection::Left => try_dock(&self.left_dock).or(sidebar_target),
 4821                        SplitDirection::Right => try_dock(&self.right_dock),
 4822                    }
 4823                }
 4824            }
 4825
 4826            (Origin::LeftDock, SplitDirection::Right) => {
 4827                if let Some(last_active_pane) = get_last_active_pane() {
 4828                    Some(Target::Pane(last_active_pane))
 4829                } else {
 4830                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.right_dock))
 4831                }
 4832            }
 4833
 4834            (Origin::LeftDock, SplitDirection::Left) => sidebar_target,
 4835
 4836            (Origin::LeftDock, SplitDirection::Down)
 4837            | (Origin::RightDock, SplitDirection::Down) => try_dock(&self.bottom_dock),
 4838
 4839            (Origin::BottomDock, SplitDirection::Up) => get_last_active_pane().map(Target::Pane),
 4840            (Origin::BottomDock, SplitDirection::Left) => {
 4841                try_dock(&self.left_dock).or(sidebar_target)
 4842            }
 4843            (Origin::BottomDock, SplitDirection::Right) => try_dock(&self.right_dock),
 4844
 4845            (Origin::RightDock, SplitDirection::Left) => {
 4846                if let Some(last_active_pane) = get_last_active_pane() {
 4847                    Some(Target::Pane(last_active_pane))
 4848                } else {
 4849                    try_dock(&self.bottom_dock)
 4850                        .or_else(|| try_dock(&self.left_dock))
 4851                        .or(sidebar_target)
 4852                }
 4853            }
 4854
 4855            _ => None,
 4856        };
 4857
 4858        match target {
 4859            Some(ActivateInDirectionTarget::Pane(pane)) => {
 4860                let pane = pane.read(cx);
 4861                if let Some(item) = pane.active_item() {
 4862                    item.item_focus_handle(cx).focus(window, cx);
 4863                } else {
 4864                    log::error!(
 4865                        "Could not find a focus target when in switching focus in {direction} direction for a pane",
 4866                    );
 4867                }
 4868            }
 4869            Some(ActivateInDirectionTarget::Dock(dock)) => {
 4870                // Defer this to avoid a panic when the dock's active panel is already on the stack.
 4871                window.defer(cx, move |window, cx| {
 4872                    let dock = dock.read(cx);
 4873                    if let Some(panel) = dock.active_panel() {
 4874                        panel.panel_focus_handle(cx).focus(window, cx);
 4875                    } else {
 4876                        log::error!("Could not find a focus target when in switching focus in {direction} direction for a {:?} dock", dock.position());
 4877                    }
 4878                })
 4879            }
 4880            Some(ActivateInDirectionTarget::Sidebar(focus_handle)) => {
 4881                focus_handle.focus(window, cx);
 4882            }
 4883            None => {}
 4884        }
 4885    }
 4886
 4887    pub fn move_item_to_pane_in_direction(
 4888        &mut self,
 4889        action: &MoveItemToPaneInDirection,
 4890        window: &mut Window,
 4891        cx: &mut Context<Self>,
 4892    ) {
 4893        let destination = match self.find_pane_in_direction(action.direction, cx) {
 4894            Some(destination) => destination,
 4895            None => {
 4896                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 4897                    return;
 4898                }
 4899                let new_pane = self.add_pane(window, cx);
 4900                self.center
 4901                    .split(&self.active_pane, &new_pane, action.direction, cx);
 4902                new_pane
 4903            }
 4904        };
 4905
 4906        if action.clone {
 4907            if self
 4908                .active_pane
 4909                .read(cx)
 4910                .active_item()
 4911                .is_some_and(|item| item.can_split(cx))
 4912            {
 4913                clone_active_item(
 4914                    self.database_id(),
 4915                    &self.active_pane,
 4916                    &destination,
 4917                    action.focus,
 4918                    window,
 4919                    cx,
 4920                );
 4921                return;
 4922            }
 4923        }
 4924        move_active_item(
 4925            &self.active_pane,
 4926            &destination,
 4927            action.focus,
 4928            true,
 4929            window,
 4930            cx,
 4931        );
 4932    }
 4933
 4934    pub fn bounding_box_for_pane(&self, pane: &Entity<Pane>) -> Option<Bounds<Pixels>> {
 4935        self.center.bounding_box_for_pane(pane)
 4936    }
 4937
 4938    pub fn find_pane_in_direction(
 4939        &mut self,
 4940        direction: SplitDirection,
 4941        cx: &App,
 4942    ) -> Option<Entity<Pane>> {
 4943        self.center
 4944            .find_pane_in_direction(&self.active_pane, direction, cx)
 4945            .cloned()
 4946    }
 4947
 4948    pub fn swap_pane_in_direction(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 4949        if let Some(to) = self.find_pane_in_direction(direction, cx) {
 4950            self.center.swap(&self.active_pane, &to, cx);
 4951            cx.notify();
 4952        }
 4953    }
 4954
 4955    pub fn move_pane_to_border(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 4956        if self
 4957            .center
 4958            .move_to_border(&self.active_pane, direction, cx)
 4959            .unwrap()
 4960        {
 4961            cx.notify();
 4962        }
 4963    }
 4964
 4965    pub fn resize_pane(
 4966        &mut self,
 4967        axis: gpui::Axis,
 4968        amount: Pixels,
 4969        window: &mut Window,
 4970        cx: &mut Context<Self>,
 4971    ) {
 4972        let docks = self.all_docks();
 4973        let active_dock = docks
 4974            .into_iter()
 4975            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 4976
 4977        if let Some(dock_entity) = active_dock {
 4978            let dock = dock_entity.read(cx);
 4979            let Some(panel_size) = self.dock_size(&dock, window, cx) else {
 4980                return;
 4981            };
 4982            match dock.position() {
 4983                DockPosition::Left => self.resize_left_dock(panel_size + amount, window, cx),
 4984                DockPosition::Bottom => self.resize_bottom_dock(panel_size + amount, window, cx),
 4985                DockPosition::Right => self.resize_right_dock(panel_size + amount, window, cx),
 4986            }
 4987        } else {
 4988            self.center
 4989                .resize(&self.active_pane, axis, amount, &self.bounds, cx);
 4990        }
 4991        cx.notify();
 4992    }
 4993
 4994    pub fn reset_pane_sizes(&mut self, cx: &mut Context<Self>) {
 4995        self.center.reset_pane_sizes(cx);
 4996        cx.notify();
 4997    }
 4998
 4999    fn handle_pane_focused(
 5000        &mut self,
 5001        pane: Entity<Pane>,
 5002        window: &mut Window,
 5003        cx: &mut Context<Self>,
 5004    ) {
 5005        // This is explicitly hoisted out of the following check for pane identity as
 5006        // terminal panel panes are not registered as a center panes.
 5007        self.status_bar.update(cx, |status_bar, cx| {
 5008            status_bar.set_active_pane(&pane, window, cx);
 5009        });
 5010        if self.active_pane != pane {
 5011            self.set_active_pane(&pane, window, cx);
 5012        }
 5013
 5014        if self.last_active_center_pane.is_none() {
 5015            self.last_active_center_pane = Some(pane.downgrade());
 5016        }
 5017
 5018        // If this pane is in a dock, preserve that dock when dismissing zoomed items.
 5019        // This prevents the dock from closing when focus events fire during window activation.
 5020        // We also preserve any dock whose active panel itself has focus — this covers
 5021        // panels like AgentPanel that don't implement `pane()` but can still be zoomed.
 5022        let dock_to_preserve = self.all_docks().iter().find_map(|dock| {
 5023            let dock_read = dock.read(cx);
 5024            if let Some(panel) = dock_read.active_panel() {
 5025                if panel.pane(cx).is_some_and(|dock_pane| dock_pane == pane)
 5026                    || panel.panel_focus_handle(cx).contains_focused(window, cx)
 5027                {
 5028                    return Some(dock_read.position());
 5029                }
 5030            }
 5031            None
 5032        });
 5033
 5034        self.dismiss_zoomed_items_to_reveal(dock_to_preserve, window, cx);
 5035        if pane.read(cx).is_zoomed() {
 5036            self.zoomed = Some(pane.downgrade().into());
 5037        } else {
 5038            self.zoomed = None;
 5039        }
 5040        self.zoomed_position = None;
 5041        cx.emit(Event::ZoomChanged);
 5042        self.update_active_view_for_followers(window, cx);
 5043        pane.update(cx, |pane, _| {
 5044            pane.track_alternate_file_items();
 5045        });
 5046
 5047        cx.notify();
 5048    }
 5049
 5050    fn set_active_pane(
 5051        &mut self,
 5052        pane: &Entity<Pane>,
 5053        window: &mut Window,
 5054        cx: &mut Context<Self>,
 5055    ) {
 5056        self.active_pane = pane.clone();
 5057        self.active_item_path_changed(true, window, cx);
 5058        self.last_active_center_pane = Some(pane.downgrade());
 5059    }
 5060
 5061    fn handle_panel_focused(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5062        self.update_active_view_for_followers(window, cx);
 5063    }
 5064
 5065    fn handle_pane_event(
 5066        &mut self,
 5067        pane: &Entity<Pane>,
 5068        event: &pane::Event,
 5069        window: &mut Window,
 5070        cx: &mut Context<Self>,
 5071    ) {
 5072        let mut serialize_workspace = true;
 5073        match event {
 5074            pane::Event::AddItem { item } => {
 5075                item.added_to_pane(self, pane.clone(), window, cx);
 5076                cx.emit(Event::ItemAdded {
 5077                    item: item.boxed_clone(),
 5078                });
 5079            }
 5080            pane::Event::Split { direction, mode } => {
 5081                match mode {
 5082                    SplitMode::ClonePane => {
 5083                        self.split_and_clone(pane.clone(), *direction, window, cx)
 5084                            .detach();
 5085                    }
 5086                    SplitMode::EmptyPane => {
 5087                        self.split_pane(pane.clone(), *direction, window, cx);
 5088                    }
 5089                    SplitMode::MovePane => {
 5090                        self.split_and_move(pane.clone(), *direction, window, cx);
 5091                    }
 5092                };
 5093            }
 5094            pane::Event::JoinIntoNext => {
 5095                self.join_pane_into_next(pane.clone(), window, cx);
 5096            }
 5097            pane::Event::JoinAll => {
 5098                self.join_all_panes(window, cx);
 5099            }
 5100            pane::Event::Remove { focus_on_pane } => {
 5101                self.remove_pane(pane.clone(), focus_on_pane.clone(), window, cx);
 5102            }
 5103            pane::Event::ActivateItem {
 5104                local,
 5105                focus_changed,
 5106            } => {
 5107                window.invalidate_character_coordinates();
 5108
 5109                pane.update(cx, |pane, _| {
 5110                    pane.track_alternate_file_items();
 5111                });
 5112                if *local {
 5113                    self.unfollow_in_pane(pane, window, cx);
 5114                }
 5115                serialize_workspace = *focus_changed || pane != self.active_pane();
 5116                if pane == self.active_pane() {
 5117                    self.active_item_path_changed(*focus_changed, window, cx);
 5118                    self.update_active_view_for_followers(window, cx);
 5119                } else if *local {
 5120                    self.set_active_pane(pane, window, cx);
 5121                }
 5122            }
 5123            pane::Event::UserSavedItem { item, save_intent } => {
 5124                cx.emit(Event::UserSavedItem {
 5125                    pane: pane.downgrade(),
 5126                    item: item.boxed_clone(),
 5127                    save_intent: *save_intent,
 5128                });
 5129                serialize_workspace = false;
 5130            }
 5131            pane::Event::ChangeItemTitle => {
 5132                if *pane == self.active_pane {
 5133                    self.active_item_path_changed(false, window, cx);
 5134                }
 5135                serialize_workspace = false;
 5136            }
 5137            pane::Event::RemovedItem { item } => {
 5138                cx.emit(Event::ActiveItemChanged);
 5139                self.update_window_edited(window, cx);
 5140                if let hash_map::Entry::Occupied(entry) = self.panes_by_item.entry(item.item_id())
 5141                    && entry.get().entity_id() == pane.entity_id()
 5142                {
 5143                    entry.remove();
 5144                }
 5145                cx.emit(Event::ItemRemoved {
 5146                    item_id: item.item_id(),
 5147                });
 5148            }
 5149            pane::Event::Focus => {
 5150                window.invalidate_character_coordinates();
 5151                self.handle_pane_focused(pane.clone(), window, cx);
 5152            }
 5153            pane::Event::ZoomIn => {
 5154                if *pane == self.active_pane {
 5155                    pane.update(cx, |pane, cx| pane.set_zoomed(true, cx));
 5156                    if pane.read(cx).has_focus(window, cx) {
 5157                        self.zoomed = Some(pane.downgrade().into());
 5158                        self.zoomed_position = None;
 5159                        cx.emit(Event::ZoomChanged);
 5160                    }
 5161                    cx.notify();
 5162                }
 5163            }
 5164            pane::Event::ZoomOut => {
 5165                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 5166                if self.zoomed_position.is_none() {
 5167                    self.zoomed = None;
 5168                    cx.emit(Event::ZoomChanged);
 5169                }
 5170                cx.notify();
 5171            }
 5172            pane::Event::ItemPinned | pane::Event::ItemUnpinned => {}
 5173        }
 5174
 5175        if serialize_workspace {
 5176            self.serialize_workspace(window, cx);
 5177        }
 5178    }
 5179
 5180    pub fn unfollow_in_pane(
 5181        &mut self,
 5182        pane: &Entity<Pane>,
 5183        window: &mut Window,
 5184        cx: &mut Context<Workspace>,
 5185    ) -> Option<CollaboratorId> {
 5186        let leader_id = self.leader_for_pane(pane)?;
 5187        self.unfollow(leader_id, window, cx);
 5188        Some(leader_id)
 5189    }
 5190
 5191    pub fn split_pane(
 5192        &mut self,
 5193        pane_to_split: Entity<Pane>,
 5194        split_direction: SplitDirection,
 5195        window: &mut Window,
 5196        cx: &mut Context<Self>,
 5197    ) -> Entity<Pane> {
 5198        let new_pane = self.add_pane(window, cx);
 5199        self.center
 5200            .split(&pane_to_split, &new_pane, split_direction, cx);
 5201        cx.notify();
 5202        new_pane
 5203    }
 5204
 5205    pub fn split_and_move(
 5206        &mut self,
 5207        pane: Entity<Pane>,
 5208        direction: SplitDirection,
 5209        window: &mut Window,
 5210        cx: &mut Context<Self>,
 5211    ) {
 5212        let Some(item) = pane.update(cx, |pane, cx| pane.take_active_item(window, cx)) else {
 5213            return;
 5214        };
 5215        let new_pane = self.add_pane(window, cx);
 5216        new_pane.update(cx, |pane, cx| {
 5217            pane.add_item(item, true, true, None, window, cx)
 5218        });
 5219        self.center.split(&pane, &new_pane, direction, cx);
 5220        cx.notify();
 5221    }
 5222
 5223    pub fn split_and_clone(
 5224        &mut self,
 5225        pane: Entity<Pane>,
 5226        direction: SplitDirection,
 5227        window: &mut Window,
 5228        cx: &mut Context<Self>,
 5229    ) -> Task<Option<Entity<Pane>>> {
 5230        let Some(item) = pane.read(cx).active_item() else {
 5231            return Task::ready(None);
 5232        };
 5233        if !item.can_split(cx) {
 5234            return Task::ready(None);
 5235        }
 5236        let task = item.clone_on_split(self.database_id(), window, cx);
 5237        cx.spawn_in(window, async move |this, cx| {
 5238            if let Some(clone) = task.await {
 5239                this.update_in(cx, |this, window, cx| {
 5240                    let new_pane = this.add_pane(window, cx);
 5241                    let nav_history = pane.read(cx).fork_nav_history();
 5242                    new_pane.update(cx, |pane, cx| {
 5243                        pane.set_nav_history(nav_history, cx);
 5244                        pane.add_item(clone, true, true, None, window, cx)
 5245                    });
 5246                    this.center.split(&pane, &new_pane, direction, cx);
 5247                    cx.notify();
 5248                    new_pane
 5249                })
 5250                .ok()
 5251            } else {
 5252                None
 5253            }
 5254        })
 5255    }
 5256
 5257    pub fn join_all_panes(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5258        let active_item = self.active_pane.read(cx).active_item();
 5259        for pane in &self.panes {
 5260            join_pane_into_active(&self.active_pane, pane, window, cx);
 5261        }
 5262        if let Some(active_item) = active_item {
 5263            self.activate_item(active_item.as_ref(), true, true, window, cx);
 5264        }
 5265        cx.notify();
 5266    }
 5267
 5268    pub fn join_pane_into_next(
 5269        &mut self,
 5270        pane: Entity<Pane>,
 5271        window: &mut Window,
 5272        cx: &mut Context<Self>,
 5273    ) {
 5274        let next_pane = self
 5275            .find_pane_in_direction(SplitDirection::Right, cx)
 5276            .or_else(|| self.find_pane_in_direction(SplitDirection::Down, cx))
 5277            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 5278            .or_else(|| self.find_pane_in_direction(SplitDirection::Up, cx));
 5279        let Some(next_pane) = next_pane else {
 5280            return;
 5281        };
 5282        move_all_items(&pane, &next_pane, window, cx);
 5283        cx.notify();
 5284    }
 5285
 5286    fn remove_pane(
 5287        &mut self,
 5288        pane: Entity<Pane>,
 5289        focus_on: Option<Entity<Pane>>,
 5290        window: &mut Window,
 5291        cx: &mut Context<Self>,
 5292    ) {
 5293        if self.center.remove(&pane, cx).unwrap() {
 5294            self.force_remove_pane(&pane, &focus_on, window, cx);
 5295            self.unfollow_in_pane(&pane, window, cx);
 5296            self.last_leaders_by_pane.remove(&pane.downgrade());
 5297            for removed_item in pane.read(cx).items() {
 5298                self.panes_by_item.remove(&removed_item.item_id());
 5299            }
 5300
 5301            cx.notify();
 5302        } else {
 5303            self.active_item_path_changed(true, window, cx);
 5304        }
 5305        cx.emit(Event::PaneRemoved);
 5306    }
 5307
 5308    pub fn panes_mut(&mut self) -> &mut [Entity<Pane>] {
 5309        &mut self.panes
 5310    }
 5311
 5312    pub fn panes(&self) -> &[Entity<Pane>] {
 5313        &self.panes
 5314    }
 5315
 5316    pub fn active_pane(&self) -> &Entity<Pane> {
 5317        &self.active_pane
 5318    }
 5319
 5320    pub fn focused_pane(&self, window: &Window, cx: &App) -> Entity<Pane> {
 5321        for dock in self.all_docks() {
 5322            if dock.focus_handle(cx).contains_focused(window, cx)
 5323                && let Some(pane) = dock
 5324                    .read(cx)
 5325                    .active_panel()
 5326                    .and_then(|panel| panel.pane(cx))
 5327            {
 5328                return pane;
 5329            }
 5330        }
 5331        self.active_pane().clone()
 5332    }
 5333
 5334    pub fn adjacent_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 5335        self.find_pane_in_direction(SplitDirection::Right, cx)
 5336            .unwrap_or_else(|| {
 5337                self.split_pane(self.active_pane.clone(), SplitDirection::Right, window, cx)
 5338            })
 5339    }
 5340
 5341    pub fn pane_for(&self, handle: &dyn ItemHandle) -> Option<Entity<Pane>> {
 5342        self.pane_for_item_id(handle.item_id())
 5343    }
 5344
 5345    pub fn pane_for_item_id(&self, item_id: EntityId) -> Option<Entity<Pane>> {
 5346        let weak_pane = self.panes_by_item.get(&item_id)?;
 5347        weak_pane.upgrade()
 5348    }
 5349
 5350    pub fn pane_for_entity_id(&self, entity_id: EntityId) -> Option<Entity<Pane>> {
 5351        self.panes
 5352            .iter()
 5353            .find(|pane| pane.entity_id() == entity_id)
 5354            .cloned()
 5355    }
 5356
 5357    fn collaborator_left(&mut self, peer_id: PeerId, window: &mut Window, cx: &mut Context<Self>) {
 5358        self.follower_states.retain(|leader_id, state| {
 5359            if *leader_id == CollaboratorId::PeerId(peer_id) {
 5360                for item in state.items_by_leader_view_id.values() {
 5361                    item.view.set_leader_id(None, window, cx);
 5362                }
 5363                false
 5364            } else {
 5365                true
 5366            }
 5367        });
 5368        cx.notify();
 5369    }
 5370
 5371    pub fn start_following(
 5372        &mut self,
 5373        leader_id: impl Into<CollaboratorId>,
 5374        window: &mut Window,
 5375        cx: &mut Context<Self>,
 5376    ) -> Option<Task<Result<()>>> {
 5377        let leader_id = leader_id.into();
 5378        let pane = self.active_pane().clone();
 5379
 5380        self.last_leaders_by_pane
 5381            .insert(pane.downgrade(), leader_id);
 5382        self.unfollow(leader_id, window, cx);
 5383        self.unfollow_in_pane(&pane, window, cx);
 5384        self.follower_states.insert(
 5385            leader_id,
 5386            FollowerState {
 5387                center_pane: pane.clone(),
 5388                dock_pane: None,
 5389                active_view_id: None,
 5390                items_by_leader_view_id: Default::default(),
 5391            },
 5392        );
 5393        cx.notify();
 5394
 5395        match leader_id {
 5396            CollaboratorId::PeerId(leader_peer_id) => {
 5397                let room_id = self.active_call()?.room_id(cx)?;
 5398                let project_id = self.project.read(cx).remote_id();
 5399                let request = self.app_state.client.request(proto::Follow {
 5400                    room_id,
 5401                    project_id,
 5402                    leader_id: Some(leader_peer_id),
 5403                });
 5404
 5405                Some(cx.spawn_in(window, async move |this, cx| {
 5406                    let response = request.await?;
 5407                    this.update(cx, |this, _| {
 5408                        let state = this
 5409                            .follower_states
 5410                            .get_mut(&leader_id)
 5411                            .context("following interrupted")?;
 5412                        state.active_view_id = response
 5413                            .active_view
 5414                            .as_ref()
 5415                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 5416                        anyhow::Ok(())
 5417                    })??;
 5418                    if let Some(view) = response.active_view {
 5419                        Self::add_view_from_leader(this.clone(), leader_peer_id, &view, cx).await?;
 5420                    }
 5421                    this.update_in(cx, |this, window, cx| {
 5422                        this.leader_updated(leader_id, window, cx)
 5423                    })?;
 5424                    Ok(())
 5425                }))
 5426            }
 5427            CollaboratorId::Agent => {
 5428                self.leader_updated(leader_id, window, cx)?;
 5429                Some(Task::ready(Ok(())))
 5430            }
 5431        }
 5432    }
 5433
 5434    pub fn follow_next_collaborator(
 5435        &mut self,
 5436        _: &FollowNextCollaborator,
 5437        window: &mut Window,
 5438        cx: &mut Context<Self>,
 5439    ) {
 5440        let collaborators = self.project.read(cx).collaborators();
 5441        let next_leader_id = if let Some(leader_id) = self.leader_for_pane(&self.active_pane) {
 5442            let mut collaborators = collaborators.keys().copied();
 5443            for peer_id in collaborators.by_ref() {
 5444                if CollaboratorId::PeerId(peer_id) == leader_id {
 5445                    break;
 5446                }
 5447            }
 5448            collaborators.next().map(CollaboratorId::PeerId)
 5449        } else if let Some(last_leader_id) =
 5450            self.last_leaders_by_pane.get(&self.active_pane.downgrade())
 5451        {
 5452            match last_leader_id {
 5453                CollaboratorId::PeerId(peer_id) => {
 5454                    if collaborators.contains_key(peer_id) {
 5455                        Some(*last_leader_id)
 5456                    } else {
 5457                        None
 5458                    }
 5459                }
 5460                CollaboratorId::Agent => Some(CollaboratorId::Agent),
 5461            }
 5462        } else {
 5463            None
 5464        };
 5465
 5466        let pane = self.active_pane.clone();
 5467        let Some(leader_id) = next_leader_id.or_else(|| {
 5468            Some(CollaboratorId::PeerId(
 5469                collaborators.keys().copied().next()?,
 5470            ))
 5471        }) else {
 5472            return;
 5473        };
 5474        if self.unfollow_in_pane(&pane, window, cx) == Some(leader_id) {
 5475            return;
 5476        }
 5477        if let Some(task) = self.start_following(leader_id, window, cx) {
 5478            task.detach_and_log_err(cx)
 5479        }
 5480    }
 5481
 5482    pub fn follow(
 5483        &mut self,
 5484        leader_id: impl Into<CollaboratorId>,
 5485        window: &mut Window,
 5486        cx: &mut Context<Self>,
 5487    ) {
 5488        let leader_id = leader_id.into();
 5489
 5490        if let CollaboratorId::PeerId(peer_id) = leader_id {
 5491            let Some(active_call) = GlobalAnyActiveCall::try_global(cx) else {
 5492                return;
 5493            };
 5494            let Some(remote_participant) =
 5495                active_call.0.remote_participant_for_peer_id(peer_id, cx)
 5496            else {
 5497                return;
 5498            };
 5499
 5500            let project = self.project.read(cx);
 5501
 5502            let other_project_id = match remote_participant.location {
 5503                ParticipantLocation::External => None,
 5504                ParticipantLocation::UnsharedProject => None,
 5505                ParticipantLocation::SharedProject { project_id } => {
 5506                    if Some(project_id) == project.remote_id() {
 5507                        None
 5508                    } else {
 5509                        Some(project_id)
 5510                    }
 5511                }
 5512            };
 5513
 5514            // if they are active in another project, follow there.
 5515            if let Some(project_id) = other_project_id {
 5516                let app_state = self.app_state.clone();
 5517                crate::join_in_room_project(project_id, remote_participant.user.id, app_state, cx)
 5518                    .detach_and_log_err(cx);
 5519            }
 5520        }
 5521
 5522        // if you're already following, find the right pane and focus it.
 5523        if let Some(follower_state) = self.follower_states.get(&leader_id) {
 5524            window.focus(&follower_state.pane().focus_handle(cx), cx);
 5525
 5526            return;
 5527        }
 5528
 5529        // Otherwise, follow.
 5530        if let Some(task) = self.start_following(leader_id, window, cx) {
 5531            task.detach_and_log_err(cx)
 5532        }
 5533    }
 5534
 5535    pub fn unfollow(
 5536        &mut self,
 5537        leader_id: impl Into<CollaboratorId>,
 5538        window: &mut Window,
 5539        cx: &mut Context<Self>,
 5540    ) -> Option<()> {
 5541        cx.notify();
 5542
 5543        let leader_id = leader_id.into();
 5544        let state = self.follower_states.remove(&leader_id)?;
 5545        for (_, item) in state.items_by_leader_view_id {
 5546            item.view.set_leader_id(None, window, cx);
 5547        }
 5548
 5549        if let CollaboratorId::PeerId(leader_peer_id) = leader_id {
 5550            let project_id = self.project.read(cx).remote_id();
 5551            let room_id = self.active_call()?.room_id(cx)?;
 5552            self.app_state
 5553                .client
 5554                .send(proto::Unfollow {
 5555                    room_id,
 5556                    project_id,
 5557                    leader_id: Some(leader_peer_id),
 5558                })
 5559                .log_err();
 5560        }
 5561
 5562        Some(())
 5563    }
 5564
 5565    pub fn is_being_followed(&self, id: impl Into<CollaboratorId>) -> bool {
 5566        self.follower_states.contains_key(&id.into())
 5567    }
 5568
 5569    fn active_item_path_changed(
 5570        &mut self,
 5571        focus_changed: bool,
 5572        window: &mut Window,
 5573        cx: &mut Context<Self>,
 5574    ) {
 5575        cx.emit(Event::ActiveItemChanged);
 5576        let active_entry = self.active_project_path(cx);
 5577        self.project.update(cx, |project, cx| {
 5578            project.set_active_path(active_entry.clone(), cx)
 5579        });
 5580
 5581        if focus_changed && let Some(project_path) = &active_entry {
 5582            let git_store_entity = self.project.read(cx).git_store().clone();
 5583            git_store_entity.update(cx, |git_store, cx| {
 5584                git_store.set_active_repo_for_path(project_path, cx);
 5585            });
 5586        }
 5587
 5588        self.update_window_title(window, cx);
 5589    }
 5590
 5591    fn update_window_title(&mut self, window: &mut Window, cx: &mut App) {
 5592        let project = self.project().read(cx);
 5593        let mut title = String::new();
 5594
 5595        for (i, worktree) in project.visible_worktrees(cx).enumerate() {
 5596            let name = {
 5597                let settings_location = SettingsLocation {
 5598                    worktree_id: worktree.read(cx).id(),
 5599                    path: RelPath::empty(),
 5600                };
 5601
 5602                let settings = WorktreeSettings::get(Some(settings_location), cx);
 5603                match &settings.project_name {
 5604                    Some(name) => name.as_str(),
 5605                    None => worktree.read(cx).root_name_str(),
 5606                }
 5607            };
 5608            if i > 0 {
 5609                title.push_str(", ");
 5610            }
 5611            title.push_str(name);
 5612        }
 5613
 5614        if title.is_empty() {
 5615            title = "empty project".to_string();
 5616        }
 5617
 5618        if let Some(path) = self.active_item(cx).and_then(|item| item.project_path(cx)) {
 5619            let filename = path.path.file_name().or_else(|| {
 5620                Some(
 5621                    project
 5622                        .worktree_for_id(path.worktree_id, cx)?
 5623                        .read(cx)
 5624                        .root_name_str(),
 5625                )
 5626            });
 5627
 5628            if let Some(filename) = filename {
 5629                title.push_str("");
 5630                title.push_str(filename.as_ref());
 5631            }
 5632        }
 5633
 5634        if project.is_via_collab() {
 5635            title.push_str("");
 5636        } else if project.is_shared() {
 5637            title.push_str("");
 5638        }
 5639
 5640        if let Some(last_title) = self.last_window_title.as_ref()
 5641            && &title == last_title
 5642        {
 5643            return;
 5644        }
 5645        window.set_window_title(&title);
 5646        SystemWindowTabController::update_tab_title(
 5647            cx,
 5648            window.window_handle().window_id(),
 5649            SharedString::from(&title),
 5650        );
 5651        self.last_window_title = Some(title);
 5652    }
 5653
 5654    fn update_window_edited(&mut self, window: &mut Window, cx: &mut App) {
 5655        let is_edited = !self.project.read(cx).is_disconnected(cx) && !self.dirty_items.is_empty();
 5656        if is_edited != self.window_edited {
 5657            self.window_edited = is_edited;
 5658            window.set_window_edited(self.window_edited)
 5659        }
 5660    }
 5661
 5662    fn update_item_dirty_state(
 5663        &mut self,
 5664        item: &dyn ItemHandle,
 5665        window: &mut Window,
 5666        cx: &mut App,
 5667    ) {
 5668        let is_dirty = item.is_dirty(cx);
 5669        let item_id = item.item_id();
 5670        let was_dirty = self.dirty_items.contains_key(&item_id);
 5671        if is_dirty == was_dirty {
 5672            return;
 5673        }
 5674        if was_dirty {
 5675            self.dirty_items.remove(&item_id);
 5676            self.update_window_edited(window, cx);
 5677            return;
 5678        }
 5679
 5680        let workspace = self.weak_handle();
 5681        let Some(window_handle) = window.window_handle().downcast::<MultiWorkspace>() else {
 5682            return;
 5683        };
 5684        let on_release_callback = Box::new(move |cx: &mut App| {
 5685            window_handle
 5686                .update(cx, |_, window, cx| {
 5687                    workspace
 5688                        .update(cx, |workspace, cx| {
 5689                            workspace.dirty_items.remove(&item_id);
 5690                            workspace.update_window_edited(window, cx)
 5691                        })
 5692                        .ok();
 5693                })
 5694                .ok();
 5695        });
 5696
 5697        let s = item.on_release(cx, on_release_callback);
 5698        self.dirty_items.insert(item_id, s);
 5699        self.update_window_edited(window, cx);
 5700    }
 5701
 5702    fn render_notifications(&self, _window: &mut Window, _cx: &mut Context<Self>) -> Option<Div> {
 5703        if self.notifications.is_empty() {
 5704            None
 5705        } else {
 5706            Some(
 5707                div()
 5708                    .absolute()
 5709                    .right_3()
 5710                    .bottom_3()
 5711                    .w_112()
 5712                    .h_full()
 5713                    .flex()
 5714                    .flex_col()
 5715                    .justify_end()
 5716                    .gap_2()
 5717                    .children(
 5718                        self.notifications
 5719                            .iter()
 5720                            .map(|(_, notification)| notification.clone().into_any()),
 5721                    ),
 5722            )
 5723        }
 5724    }
 5725
 5726    // RPC handlers
 5727
 5728    fn active_view_for_follower(
 5729        &self,
 5730        follower_project_id: Option<u64>,
 5731        window: &mut Window,
 5732        cx: &mut Context<Self>,
 5733    ) -> Option<proto::View> {
 5734        let (item, panel_id) = self.active_item_for_followers(window, cx);
 5735        let item = item?;
 5736        let leader_id = self
 5737            .pane_for(&*item)
 5738            .and_then(|pane| self.leader_for_pane(&pane));
 5739        let leader_peer_id = match leader_id {
 5740            Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 5741            Some(CollaboratorId::Agent) | None => None,
 5742        };
 5743
 5744        let item_handle = item.to_followable_item_handle(cx)?;
 5745        let id = item_handle.remote_id(&self.app_state.client, window, cx)?;
 5746        let variant = item_handle.to_state_proto(window, cx)?;
 5747
 5748        if item_handle.is_project_item(window, cx)
 5749            && (follower_project_id.is_none()
 5750                || follower_project_id != self.project.read(cx).remote_id())
 5751        {
 5752            return None;
 5753        }
 5754
 5755        Some(proto::View {
 5756            id: id.to_proto(),
 5757            leader_id: leader_peer_id,
 5758            variant: Some(variant),
 5759            panel_id: panel_id.map(|id| id as i32),
 5760        })
 5761    }
 5762
 5763    fn handle_follow(
 5764        &mut self,
 5765        follower_project_id: Option<u64>,
 5766        window: &mut Window,
 5767        cx: &mut Context<Self>,
 5768    ) -> proto::FollowResponse {
 5769        let active_view = self.active_view_for_follower(follower_project_id, window, cx);
 5770
 5771        cx.notify();
 5772        proto::FollowResponse {
 5773            views: active_view.iter().cloned().collect(),
 5774            active_view,
 5775        }
 5776    }
 5777
 5778    fn handle_update_followers(
 5779        &mut self,
 5780        leader_id: PeerId,
 5781        message: proto::UpdateFollowers,
 5782        _window: &mut Window,
 5783        _cx: &mut Context<Self>,
 5784    ) {
 5785        self.leader_updates_tx
 5786            .unbounded_send((leader_id, message))
 5787            .ok();
 5788    }
 5789
 5790    async fn process_leader_update(
 5791        this: &WeakEntity<Self>,
 5792        leader_id: PeerId,
 5793        update: proto::UpdateFollowers,
 5794        cx: &mut AsyncWindowContext,
 5795    ) -> Result<()> {
 5796        match update.variant.context("invalid update")? {
 5797            proto::update_followers::Variant::CreateView(view) => {
 5798                let view_id = ViewId::from_proto(view.id.clone().context("invalid view id")?)?;
 5799                let should_add_view = this.update(cx, |this, _| {
 5800                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 5801                        anyhow::Ok(!state.items_by_leader_view_id.contains_key(&view_id))
 5802                    } else {
 5803                        anyhow::Ok(false)
 5804                    }
 5805                })??;
 5806
 5807                if should_add_view {
 5808                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 5809                }
 5810            }
 5811            proto::update_followers::Variant::UpdateActiveView(update_active_view) => {
 5812                let should_add_view = this.update(cx, |this, _| {
 5813                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 5814                        state.active_view_id = update_active_view
 5815                            .view
 5816                            .as_ref()
 5817                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 5818
 5819                        if state.active_view_id.is_some_and(|view_id| {
 5820                            !state.items_by_leader_view_id.contains_key(&view_id)
 5821                        }) {
 5822                            anyhow::Ok(true)
 5823                        } else {
 5824                            anyhow::Ok(false)
 5825                        }
 5826                    } else {
 5827                        anyhow::Ok(false)
 5828                    }
 5829                })??;
 5830
 5831                if should_add_view && let Some(view) = update_active_view.view {
 5832                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 5833                }
 5834            }
 5835            proto::update_followers::Variant::UpdateView(update_view) => {
 5836                let variant = update_view.variant.context("missing update view variant")?;
 5837                let id = update_view.id.context("missing update view id")?;
 5838                let mut tasks = Vec::new();
 5839                this.update_in(cx, |this, window, cx| {
 5840                    let project = this.project.clone();
 5841                    if let Some(state) = this.follower_states.get(&leader_id.into()) {
 5842                        let view_id = ViewId::from_proto(id.clone())?;
 5843                        if let Some(item) = state.items_by_leader_view_id.get(&view_id) {
 5844                            tasks.push(item.view.apply_update_proto(
 5845                                &project,
 5846                                variant.clone(),
 5847                                window,
 5848                                cx,
 5849                            ));
 5850                        }
 5851                    }
 5852                    anyhow::Ok(())
 5853                })??;
 5854                try_join_all(tasks).await.log_err();
 5855            }
 5856        }
 5857        this.update_in(cx, |this, window, cx| {
 5858            this.leader_updated(leader_id, window, cx)
 5859        })?;
 5860        Ok(())
 5861    }
 5862
 5863    async fn add_view_from_leader(
 5864        this: WeakEntity<Self>,
 5865        leader_id: PeerId,
 5866        view: &proto::View,
 5867        cx: &mut AsyncWindowContext,
 5868    ) -> Result<()> {
 5869        let this = this.upgrade().context("workspace dropped")?;
 5870
 5871        let Some(id) = view.id.clone() else {
 5872            anyhow::bail!("no id for view");
 5873        };
 5874        let id = ViewId::from_proto(id)?;
 5875        let panel_id = view.panel_id.and_then(proto::PanelId::from_i32);
 5876
 5877        let pane = this.update(cx, |this, _cx| {
 5878            let state = this
 5879                .follower_states
 5880                .get(&leader_id.into())
 5881                .context("stopped following")?;
 5882            anyhow::Ok(state.pane().clone())
 5883        })?;
 5884        let existing_item = pane.update_in(cx, |pane, window, cx| {
 5885            let client = this.read(cx).client().clone();
 5886            pane.items().find_map(|item| {
 5887                let item = item.to_followable_item_handle(cx)?;
 5888                if item.remote_id(&client, window, cx) == Some(id) {
 5889                    Some(item)
 5890                } else {
 5891                    None
 5892                }
 5893            })
 5894        })?;
 5895        let item = if let Some(existing_item) = existing_item {
 5896            existing_item
 5897        } else {
 5898            let variant = view.variant.clone();
 5899            anyhow::ensure!(variant.is_some(), "missing view variant");
 5900
 5901            let task = cx.update(|window, cx| {
 5902                FollowableViewRegistry::from_state_proto(this.clone(), id, variant, window, cx)
 5903            })?;
 5904
 5905            let Some(task) = task else {
 5906                anyhow::bail!(
 5907                    "failed to construct view from leader (maybe from a different version of zed?)"
 5908                );
 5909            };
 5910
 5911            let mut new_item = task.await?;
 5912            pane.update_in(cx, |pane, window, cx| {
 5913                let mut item_to_remove = None;
 5914                for (ix, item) in pane.items().enumerate() {
 5915                    if let Some(item) = item.to_followable_item_handle(cx) {
 5916                        match new_item.dedup(item.as_ref(), window, cx) {
 5917                            Some(item::Dedup::KeepExisting) => {
 5918                                new_item =
 5919                                    item.boxed_clone().to_followable_item_handle(cx).unwrap();
 5920                                break;
 5921                            }
 5922                            Some(item::Dedup::ReplaceExisting) => {
 5923                                item_to_remove = Some((ix, item.item_id()));
 5924                                break;
 5925                            }
 5926                            None => {}
 5927                        }
 5928                    }
 5929                }
 5930
 5931                if let Some((ix, id)) = item_to_remove {
 5932                    pane.remove_item(id, false, false, window, cx);
 5933                    pane.add_item(new_item.boxed_clone(), false, false, Some(ix), window, cx);
 5934                }
 5935            })?;
 5936
 5937            new_item
 5938        };
 5939
 5940        this.update_in(cx, |this, window, cx| {
 5941            let state = this.follower_states.get_mut(&leader_id.into())?;
 5942            item.set_leader_id(Some(leader_id.into()), window, cx);
 5943            state.items_by_leader_view_id.insert(
 5944                id,
 5945                FollowerView {
 5946                    view: item,
 5947                    location: panel_id,
 5948                },
 5949            );
 5950
 5951            Some(())
 5952        })
 5953        .context("no follower state")?;
 5954
 5955        Ok(())
 5956    }
 5957
 5958    fn handle_agent_location_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5959        let Some(follower_state) = self.follower_states.get_mut(&CollaboratorId::Agent) else {
 5960            return;
 5961        };
 5962
 5963        if let Some(agent_location) = self.project.read(cx).agent_location() {
 5964            let buffer_entity_id = agent_location.buffer.entity_id();
 5965            let view_id = ViewId {
 5966                creator: CollaboratorId::Agent,
 5967                id: buffer_entity_id.as_u64(),
 5968            };
 5969            follower_state.active_view_id = Some(view_id);
 5970
 5971            let item = match follower_state.items_by_leader_view_id.entry(view_id) {
 5972                hash_map::Entry::Occupied(entry) => Some(entry.into_mut()),
 5973                hash_map::Entry::Vacant(entry) => {
 5974                    let existing_view =
 5975                        follower_state
 5976                            .center_pane
 5977                            .read(cx)
 5978                            .items()
 5979                            .find_map(|item| {
 5980                                let item = item.to_followable_item_handle(cx)?;
 5981                                if item.buffer_kind(cx) == ItemBufferKind::Singleton
 5982                                    && item.project_item_model_ids(cx).as_slice()
 5983                                        == [buffer_entity_id]
 5984                                {
 5985                                    Some(item)
 5986                                } else {
 5987                                    None
 5988                                }
 5989                            });
 5990                    let view = existing_view.or_else(|| {
 5991                        agent_location.buffer.upgrade().and_then(|buffer| {
 5992                            cx.update_default_global(|registry: &mut ProjectItemRegistry, cx| {
 5993                                registry.build_item(buffer, self.project.clone(), None, window, cx)
 5994                            })?
 5995                            .to_followable_item_handle(cx)
 5996                        })
 5997                    });
 5998
 5999                    view.map(|view| {
 6000                        entry.insert(FollowerView {
 6001                            view,
 6002                            location: None,
 6003                        })
 6004                    })
 6005                }
 6006            };
 6007
 6008            if let Some(item) = item {
 6009                item.view
 6010                    .set_leader_id(Some(CollaboratorId::Agent), window, cx);
 6011                item.view
 6012                    .update_agent_location(agent_location.position, window, cx);
 6013            }
 6014        } else {
 6015            follower_state.active_view_id = None;
 6016        }
 6017
 6018        self.leader_updated(CollaboratorId::Agent, window, cx);
 6019    }
 6020
 6021    pub fn update_active_view_for_followers(&mut self, window: &mut Window, cx: &mut App) {
 6022        let mut is_project_item = true;
 6023        let mut update = proto::UpdateActiveView::default();
 6024        if window.is_window_active() {
 6025            let (active_item, panel_id) = self.active_item_for_followers(window, cx);
 6026
 6027            if let Some(item) = active_item
 6028                && item.item_focus_handle(cx).contains_focused(window, cx)
 6029            {
 6030                let leader_id = self
 6031                    .pane_for(&*item)
 6032                    .and_then(|pane| self.leader_for_pane(&pane));
 6033                let leader_peer_id = match leader_id {
 6034                    Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 6035                    Some(CollaboratorId::Agent) | None => None,
 6036                };
 6037
 6038                if let Some(item) = item.to_followable_item_handle(cx) {
 6039                    let id = item
 6040                        .remote_id(&self.app_state.client, window, cx)
 6041                        .map(|id| id.to_proto());
 6042
 6043                    if let Some(id) = id
 6044                        && let Some(variant) = item.to_state_proto(window, cx)
 6045                    {
 6046                        let view = Some(proto::View {
 6047                            id,
 6048                            leader_id: leader_peer_id,
 6049                            variant: Some(variant),
 6050                            panel_id: panel_id.map(|id| id as i32),
 6051                        });
 6052
 6053                        is_project_item = item.is_project_item(window, cx);
 6054                        update = proto::UpdateActiveView { view };
 6055                    };
 6056                }
 6057            }
 6058        }
 6059
 6060        let active_view_id = update.view.as_ref().and_then(|view| view.id.as_ref());
 6061        if active_view_id != self.last_active_view_id.as_ref() {
 6062            self.last_active_view_id = active_view_id.cloned();
 6063            self.update_followers(
 6064                is_project_item,
 6065                proto::update_followers::Variant::UpdateActiveView(update),
 6066                window,
 6067                cx,
 6068            );
 6069        }
 6070    }
 6071
 6072    fn active_item_for_followers(
 6073        &self,
 6074        window: &mut Window,
 6075        cx: &mut App,
 6076    ) -> (Option<Box<dyn ItemHandle>>, Option<proto::PanelId>) {
 6077        let mut active_item = None;
 6078        let mut panel_id = None;
 6079        for dock in self.all_docks() {
 6080            if dock.focus_handle(cx).contains_focused(window, cx)
 6081                && let Some(panel) = dock.read(cx).active_panel()
 6082                && let Some(pane) = panel.pane(cx)
 6083                && let Some(item) = pane.read(cx).active_item()
 6084            {
 6085                active_item = Some(item);
 6086                panel_id = panel.remote_id();
 6087                break;
 6088            }
 6089        }
 6090
 6091        if active_item.is_none() {
 6092            active_item = self.active_pane().read(cx).active_item();
 6093        }
 6094        (active_item, panel_id)
 6095    }
 6096
 6097    fn update_followers(
 6098        &self,
 6099        project_only: bool,
 6100        update: proto::update_followers::Variant,
 6101        _: &mut Window,
 6102        cx: &mut App,
 6103    ) -> Option<()> {
 6104        // If this update only applies to for followers in the current project,
 6105        // then skip it unless this project is shared. If it applies to all
 6106        // followers, regardless of project, then set `project_id` to none,
 6107        // indicating that it goes to all followers.
 6108        let project_id = if project_only {
 6109            Some(self.project.read(cx).remote_id()?)
 6110        } else {
 6111            None
 6112        };
 6113        self.app_state().workspace_store.update(cx, |store, cx| {
 6114            store.update_followers(project_id, update, cx)
 6115        })
 6116    }
 6117
 6118    pub fn leader_for_pane(&self, pane: &Entity<Pane>) -> Option<CollaboratorId> {
 6119        self.follower_states.iter().find_map(|(leader_id, state)| {
 6120            if state.center_pane == *pane || state.dock_pane.as_ref() == Some(pane) {
 6121                Some(*leader_id)
 6122            } else {
 6123                None
 6124            }
 6125        })
 6126    }
 6127
 6128    fn leader_updated(
 6129        &mut self,
 6130        leader_id: impl Into<CollaboratorId>,
 6131        window: &mut Window,
 6132        cx: &mut Context<Self>,
 6133    ) -> Option<Box<dyn ItemHandle>> {
 6134        cx.notify();
 6135
 6136        let leader_id = leader_id.into();
 6137        let (panel_id, item) = match leader_id {
 6138            CollaboratorId::PeerId(peer_id) => self.active_item_for_peer(peer_id, window, cx)?,
 6139            CollaboratorId::Agent => (None, self.active_item_for_agent()?),
 6140        };
 6141
 6142        let state = self.follower_states.get(&leader_id)?;
 6143        let mut transfer_focus = state.center_pane.read(cx).has_focus(window, cx);
 6144        let pane;
 6145        if let Some(panel_id) = panel_id {
 6146            pane = self
 6147                .activate_panel_for_proto_id(panel_id, window, cx)?
 6148                .pane(cx)?;
 6149            let state = self.follower_states.get_mut(&leader_id)?;
 6150            state.dock_pane = Some(pane.clone());
 6151        } else {
 6152            pane = state.center_pane.clone();
 6153            let state = self.follower_states.get_mut(&leader_id)?;
 6154            if let Some(dock_pane) = state.dock_pane.take() {
 6155                transfer_focus |= dock_pane.focus_handle(cx).contains_focused(window, cx);
 6156            }
 6157        }
 6158
 6159        pane.update(cx, |pane, cx| {
 6160            let focus_active_item = pane.has_focus(window, cx) || transfer_focus;
 6161            if let Some(index) = pane.index_for_item(item.as_ref()) {
 6162                pane.activate_item(index, false, false, window, cx);
 6163            } else {
 6164                pane.add_item(item.boxed_clone(), false, false, None, window, cx)
 6165            }
 6166
 6167            if focus_active_item {
 6168                pane.focus_active_item(window, cx)
 6169            }
 6170        });
 6171
 6172        Some(item)
 6173    }
 6174
 6175    fn active_item_for_agent(&self) -> Option<Box<dyn ItemHandle>> {
 6176        let state = self.follower_states.get(&CollaboratorId::Agent)?;
 6177        let active_view_id = state.active_view_id?;
 6178        Some(
 6179            state
 6180                .items_by_leader_view_id
 6181                .get(&active_view_id)?
 6182                .view
 6183                .boxed_clone(),
 6184        )
 6185    }
 6186
 6187    fn active_item_for_peer(
 6188        &self,
 6189        peer_id: PeerId,
 6190        window: &mut Window,
 6191        cx: &mut Context<Self>,
 6192    ) -> Option<(Option<PanelId>, Box<dyn ItemHandle>)> {
 6193        let call = self.active_call()?;
 6194        let participant = call.remote_participant_for_peer_id(peer_id, cx)?;
 6195        let leader_in_this_app;
 6196        let leader_in_this_project;
 6197        match participant.location {
 6198            ParticipantLocation::SharedProject { project_id } => {
 6199                leader_in_this_app = true;
 6200                leader_in_this_project = Some(project_id) == self.project.read(cx).remote_id();
 6201            }
 6202            ParticipantLocation::UnsharedProject => {
 6203                leader_in_this_app = true;
 6204                leader_in_this_project = false;
 6205            }
 6206            ParticipantLocation::External => {
 6207                leader_in_this_app = false;
 6208                leader_in_this_project = false;
 6209            }
 6210        };
 6211        let state = self.follower_states.get(&peer_id.into())?;
 6212        let mut item_to_activate = None;
 6213        if let (Some(active_view_id), true) = (state.active_view_id, leader_in_this_app) {
 6214            if let Some(item) = state.items_by_leader_view_id.get(&active_view_id)
 6215                && (leader_in_this_project || !item.view.is_project_item(window, cx))
 6216            {
 6217                item_to_activate = Some((item.location, item.view.boxed_clone()));
 6218            }
 6219        } else if let Some(shared_screen) =
 6220            self.shared_screen_for_peer(peer_id, &state.center_pane, window, cx)
 6221        {
 6222            item_to_activate = Some((None, Box::new(shared_screen)));
 6223        }
 6224        item_to_activate
 6225    }
 6226
 6227    fn shared_screen_for_peer(
 6228        &self,
 6229        peer_id: PeerId,
 6230        pane: &Entity<Pane>,
 6231        window: &mut Window,
 6232        cx: &mut App,
 6233    ) -> Option<Entity<SharedScreen>> {
 6234        self.active_call()?
 6235            .create_shared_screen(peer_id, pane, window, cx)
 6236    }
 6237
 6238    pub fn on_window_activation_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 6239        if window.is_window_active() {
 6240            self.update_active_view_for_followers(window, cx);
 6241
 6242            if let Some(database_id) = self.database_id {
 6243                let db = WorkspaceDb::global(cx);
 6244                cx.background_spawn(async move { db.update_timestamp(database_id).await })
 6245                    .detach();
 6246            }
 6247        } else {
 6248            for pane in &self.panes {
 6249                pane.update(cx, |pane, cx| {
 6250                    if let Some(item) = pane.active_item() {
 6251                        item.workspace_deactivated(window, cx);
 6252                    }
 6253                    for item in pane.items() {
 6254                        if matches!(
 6255                            item.workspace_settings(cx).autosave,
 6256                            AutosaveSetting::OnWindowChange | AutosaveSetting::OnFocusChange
 6257                        ) {
 6258                            Pane::autosave_item(item.as_ref(), self.project.clone(), window, cx)
 6259                                .detach_and_log_err(cx);
 6260                        }
 6261                    }
 6262                });
 6263            }
 6264        }
 6265    }
 6266
 6267    pub fn active_call(&self) -> Option<&dyn AnyActiveCall> {
 6268        self.active_call.as_ref().map(|(call, _)| &*call.0)
 6269    }
 6270
 6271    pub fn active_global_call(&self) -> Option<GlobalAnyActiveCall> {
 6272        self.active_call.as_ref().map(|(call, _)| call.clone())
 6273    }
 6274
 6275    fn on_active_call_event(
 6276        &mut self,
 6277        event: &ActiveCallEvent,
 6278        window: &mut Window,
 6279        cx: &mut Context<Self>,
 6280    ) {
 6281        match event {
 6282            ActiveCallEvent::ParticipantLocationChanged { participant_id }
 6283            | ActiveCallEvent::RemoteVideoTracksChanged { participant_id } => {
 6284                self.leader_updated(participant_id, window, cx);
 6285            }
 6286        }
 6287    }
 6288
 6289    pub fn database_id(&self) -> Option<WorkspaceId> {
 6290        self.database_id
 6291    }
 6292
 6293    #[cfg(any(test, feature = "test-support"))]
 6294    pub(crate) fn set_database_id(&mut self, id: WorkspaceId) {
 6295        self.database_id = Some(id);
 6296    }
 6297
 6298    pub fn session_id(&self) -> Option<String> {
 6299        self.session_id.clone()
 6300    }
 6301
 6302    fn save_window_bounds(&self, window: &mut Window, cx: &mut App) -> Task<()> {
 6303        let Some(display) = window.display(cx) else {
 6304            return Task::ready(());
 6305        };
 6306        let Ok(display_uuid) = display.uuid() else {
 6307            return Task::ready(());
 6308        };
 6309
 6310        let window_bounds = window.inner_window_bounds();
 6311        let database_id = self.database_id;
 6312        let has_paths = !self.root_paths(cx).is_empty();
 6313        let db = WorkspaceDb::global(cx);
 6314        let kvp = db::kvp::KeyValueStore::global(cx);
 6315
 6316        cx.background_executor().spawn(async move {
 6317            if !has_paths {
 6318                persistence::write_default_window_bounds(&kvp, window_bounds, display_uuid)
 6319                    .await
 6320                    .log_err();
 6321            }
 6322            if let Some(database_id) = database_id {
 6323                db.set_window_open_status(
 6324                    database_id,
 6325                    SerializedWindowBounds(window_bounds),
 6326                    display_uuid,
 6327                )
 6328                .await
 6329                .log_err();
 6330            } else {
 6331                persistence::write_default_window_bounds(&kvp, window_bounds, display_uuid)
 6332                    .await
 6333                    .log_err();
 6334            }
 6335        })
 6336    }
 6337
 6338    /// Bypass the 200ms serialization throttle and write workspace state to
 6339    /// the DB immediately. Returns a task the caller can await to ensure the
 6340    /// write completes. Used by the quit handler so the most recent state
 6341    /// isn't lost to a pending throttle timer when the process exits.
 6342    pub fn flush_serialization(&mut self, window: &mut Window, cx: &mut App) -> Task<()> {
 6343        self._schedule_serialize_workspace.take();
 6344        self._serialize_workspace_task.take();
 6345        self.bounds_save_task_queued.take();
 6346
 6347        let bounds_task = self.save_window_bounds(window, cx);
 6348        let serialize_task = self.serialize_workspace_internal(window, cx);
 6349        cx.spawn(async move |_| {
 6350            bounds_task.await;
 6351            serialize_task.await;
 6352        })
 6353    }
 6354
 6355    pub fn root_paths(&self, cx: &App) -> Vec<Arc<Path>> {
 6356        let project = self.project().read(cx);
 6357        project
 6358            .visible_worktrees(cx)
 6359            .map(|worktree| worktree.read(cx).abs_path())
 6360            .collect::<Vec<_>>()
 6361    }
 6362
 6363    fn remove_panes(&mut self, member: Member, window: &mut Window, cx: &mut Context<Workspace>) {
 6364        match member {
 6365            Member::Axis(PaneAxis { members, .. }) => {
 6366                for child in members.iter() {
 6367                    self.remove_panes(child.clone(), window, cx)
 6368                }
 6369            }
 6370            Member::Pane(pane) => {
 6371                self.force_remove_pane(&pane, &None, window, cx);
 6372            }
 6373        }
 6374    }
 6375
 6376    fn remove_from_session(&mut self, window: &mut Window, cx: &mut App) -> Task<()> {
 6377        self.session_id.take();
 6378        self.serialize_workspace_internal(window, cx)
 6379    }
 6380
 6381    fn force_remove_pane(
 6382        &mut self,
 6383        pane: &Entity<Pane>,
 6384        focus_on: &Option<Entity<Pane>>,
 6385        window: &mut Window,
 6386        cx: &mut Context<Workspace>,
 6387    ) {
 6388        self.panes.retain(|p| p != pane);
 6389        if let Some(focus_on) = focus_on {
 6390            focus_on.update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx));
 6391        } else if self.active_pane() == pane {
 6392            self.panes
 6393                .last()
 6394                .unwrap()
 6395                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx));
 6396        }
 6397        if self.last_active_center_pane == Some(pane.downgrade()) {
 6398            self.last_active_center_pane = None;
 6399        }
 6400        cx.notify();
 6401    }
 6402
 6403    fn serialize_workspace(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 6404        if self._schedule_serialize_workspace.is_none() {
 6405            self._schedule_serialize_workspace =
 6406                Some(cx.spawn_in(window, async move |this, cx| {
 6407                    cx.background_executor()
 6408                        .timer(SERIALIZATION_THROTTLE_TIME)
 6409                        .await;
 6410                    this.update_in(cx, |this, window, cx| {
 6411                        this._serialize_workspace_task =
 6412                            Some(this.serialize_workspace_internal(window, cx));
 6413                        this._schedule_serialize_workspace.take();
 6414                    })
 6415                    .log_err();
 6416                }));
 6417        }
 6418    }
 6419
 6420    fn serialize_workspace_internal(&self, window: &mut Window, cx: &mut App) -> Task<()> {
 6421        let Some(database_id) = self.database_id() else {
 6422            return Task::ready(());
 6423        };
 6424
 6425        fn serialize_pane_handle(
 6426            pane_handle: &Entity<Pane>,
 6427            window: &mut Window,
 6428            cx: &mut App,
 6429        ) -> SerializedPane {
 6430            let (items, active, pinned_count) = {
 6431                let pane = pane_handle.read(cx);
 6432                let active_item_id = pane.active_item().map(|item| item.item_id());
 6433                (
 6434                    pane.items()
 6435                        .filter_map(|handle| {
 6436                            let handle = handle.to_serializable_item_handle(cx)?;
 6437
 6438                            Some(SerializedItem {
 6439                                kind: Arc::from(handle.serialized_item_kind()),
 6440                                item_id: handle.item_id().as_u64(),
 6441                                active: Some(handle.item_id()) == active_item_id,
 6442                                preview: pane.is_active_preview_item(handle.item_id()),
 6443                            })
 6444                        })
 6445                        .collect::<Vec<_>>(),
 6446                    pane.has_focus(window, cx),
 6447                    pane.pinned_count(),
 6448                )
 6449            };
 6450
 6451            SerializedPane::new(items, active, pinned_count)
 6452        }
 6453
 6454        fn build_serialized_pane_group(
 6455            pane_group: &Member,
 6456            window: &mut Window,
 6457            cx: &mut App,
 6458        ) -> SerializedPaneGroup {
 6459            match pane_group {
 6460                Member::Axis(PaneAxis {
 6461                    axis,
 6462                    members,
 6463                    flexes,
 6464                    bounding_boxes: _,
 6465                }) => SerializedPaneGroup::Group {
 6466                    axis: SerializedAxis(*axis),
 6467                    children: members
 6468                        .iter()
 6469                        .map(|member| build_serialized_pane_group(member, window, cx))
 6470                        .collect::<Vec<_>>(),
 6471                    flexes: Some(flexes.lock().clone()),
 6472                },
 6473                Member::Pane(pane_handle) => {
 6474                    SerializedPaneGroup::Pane(serialize_pane_handle(pane_handle, window, cx))
 6475                }
 6476            }
 6477        }
 6478
 6479        fn build_serialized_docks(
 6480            this: &Workspace,
 6481            window: &mut Window,
 6482            cx: &mut App,
 6483        ) -> DockStructure {
 6484            this.capture_dock_state(window, cx)
 6485        }
 6486
 6487        match self.workspace_location(cx) {
 6488            WorkspaceLocation::Location(location, paths) => {
 6489                let breakpoints = self.project.update(cx, |project, cx| {
 6490                    project
 6491                        .breakpoint_store()
 6492                        .read(cx)
 6493                        .all_source_breakpoints(cx)
 6494                });
 6495                let user_toolchains = self
 6496                    .project
 6497                    .read(cx)
 6498                    .user_toolchains(cx)
 6499                    .unwrap_or_default();
 6500
 6501                let center_group = build_serialized_pane_group(&self.center.root, window, cx);
 6502                let docks = build_serialized_docks(self, window, cx);
 6503                let window_bounds = Some(SerializedWindowBounds(window.window_bounds()));
 6504
 6505                let serialized_workspace = SerializedWorkspace {
 6506                    id: database_id,
 6507                    location,
 6508                    paths,
 6509                    center_group,
 6510                    window_bounds,
 6511                    display: Default::default(),
 6512                    docks,
 6513                    centered_layout: self.centered_layout,
 6514                    session_id: self.session_id.clone(),
 6515                    breakpoints,
 6516                    window_id: Some(window.window_handle().window_id().as_u64()),
 6517                    user_toolchains,
 6518                };
 6519
 6520                let db = WorkspaceDb::global(cx);
 6521                window.spawn(cx, async move |_| {
 6522                    db.save_workspace(serialized_workspace).await;
 6523                })
 6524            }
 6525            WorkspaceLocation::DetachFromSession => {
 6526                let window_bounds = SerializedWindowBounds(window.window_bounds());
 6527                let display = window.display(cx).and_then(|d| d.uuid().ok());
 6528                // Save dock state for empty local workspaces
 6529                let docks = build_serialized_docks(self, window, cx);
 6530                let db = WorkspaceDb::global(cx);
 6531                let kvp = db::kvp::KeyValueStore::global(cx);
 6532                window.spawn(cx, async move |_| {
 6533                    db.set_window_open_status(
 6534                        database_id,
 6535                        window_bounds,
 6536                        display.unwrap_or_default(),
 6537                    )
 6538                    .await
 6539                    .log_err();
 6540                    db.set_session_id(database_id, None).await.log_err();
 6541                    persistence::write_default_dock_state(&kvp, docks)
 6542                        .await
 6543                        .log_err();
 6544                })
 6545            }
 6546            WorkspaceLocation::None => {
 6547                // Save dock state for empty non-local workspaces
 6548                let docks = build_serialized_docks(self, window, cx);
 6549                let kvp = db::kvp::KeyValueStore::global(cx);
 6550                window.spawn(cx, async move |_| {
 6551                    persistence::write_default_dock_state(&kvp, docks)
 6552                        .await
 6553                        .log_err();
 6554                })
 6555            }
 6556        }
 6557    }
 6558
 6559    fn has_any_items_open(&self, cx: &App) -> bool {
 6560        self.panes.iter().any(|pane| pane.read(cx).items_len() > 0)
 6561    }
 6562
 6563    fn workspace_location(&self, cx: &App) -> WorkspaceLocation {
 6564        let paths = PathList::new(&self.root_paths(cx));
 6565        if let Some(connection) = self.project.read(cx).remote_connection_options(cx) {
 6566            WorkspaceLocation::Location(SerializedWorkspaceLocation::Remote(connection), paths)
 6567        } else if self.project.read(cx).is_local() {
 6568            if !paths.is_empty() || self.has_any_items_open(cx) {
 6569                WorkspaceLocation::Location(SerializedWorkspaceLocation::Local, paths)
 6570            } else {
 6571                WorkspaceLocation::DetachFromSession
 6572            }
 6573        } else {
 6574            WorkspaceLocation::None
 6575        }
 6576    }
 6577
 6578    fn update_history(&self, cx: &mut App) {
 6579        let Some(id) = self.database_id() else {
 6580            return;
 6581        };
 6582        if !self.project.read(cx).is_local() {
 6583            return;
 6584        }
 6585        if let Some(manager) = HistoryManager::global(cx) {
 6586            let paths = PathList::new(&self.root_paths(cx));
 6587            manager.update(cx, |this, cx| {
 6588                this.update_history(id, HistoryManagerEntry::new(id, &paths), cx);
 6589            });
 6590        }
 6591    }
 6592
 6593    async fn serialize_items(
 6594        this: &WeakEntity<Self>,
 6595        items_rx: UnboundedReceiver<Box<dyn SerializableItemHandle>>,
 6596        cx: &mut AsyncWindowContext,
 6597    ) -> Result<()> {
 6598        const CHUNK_SIZE: usize = 200;
 6599
 6600        let mut serializable_items = items_rx.ready_chunks(CHUNK_SIZE);
 6601
 6602        while let Some(items_received) = serializable_items.next().await {
 6603            let unique_items =
 6604                items_received
 6605                    .into_iter()
 6606                    .fold(HashMap::default(), |mut acc, item| {
 6607                        acc.entry(item.item_id()).or_insert(item);
 6608                        acc
 6609                    });
 6610
 6611            // We use into_iter() here so that the references to the items are moved into
 6612            // the tasks and not kept alive while we're sleeping.
 6613            for (_, item) in unique_items.into_iter() {
 6614                if let Ok(Some(task)) = this.update_in(cx, |workspace, window, cx| {
 6615                    item.serialize(workspace, false, window, cx)
 6616                }) {
 6617                    cx.background_spawn(async move { task.await.log_err() })
 6618                        .detach();
 6619                }
 6620            }
 6621
 6622            cx.background_executor()
 6623                .timer(SERIALIZATION_THROTTLE_TIME)
 6624                .await;
 6625        }
 6626
 6627        Ok(())
 6628    }
 6629
 6630    pub(crate) fn enqueue_item_serialization(
 6631        &mut self,
 6632        item: Box<dyn SerializableItemHandle>,
 6633    ) -> Result<()> {
 6634        self.serializable_items_tx
 6635            .unbounded_send(item)
 6636            .map_err(|err| anyhow!("failed to send serializable item over channel: {err}"))
 6637    }
 6638
 6639    pub(crate) fn load_workspace(
 6640        serialized_workspace: SerializedWorkspace,
 6641        paths_to_open: Vec<Option<ProjectPath>>,
 6642        window: &mut Window,
 6643        cx: &mut Context<Workspace>,
 6644    ) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 6645        cx.spawn_in(window, async move |workspace, cx| {
 6646            let project = workspace.read_with(cx, |workspace, _| workspace.project().clone())?;
 6647
 6648            let mut center_group = None;
 6649            let mut center_items = None;
 6650
 6651            // Traverse the splits tree and add to things
 6652            if let Some((group, active_pane, items)) = serialized_workspace
 6653                .center_group
 6654                .deserialize(&project, serialized_workspace.id, workspace.clone(), cx)
 6655                .await
 6656            {
 6657                center_items = Some(items);
 6658                center_group = Some((group, active_pane))
 6659            }
 6660
 6661            let mut items_by_project_path = HashMap::default();
 6662            let mut item_ids_by_kind = HashMap::default();
 6663            let mut all_deserialized_items = Vec::default();
 6664            cx.update(|_, cx| {
 6665                for item in center_items.unwrap_or_default().into_iter().flatten() {
 6666                    if let Some(serializable_item_handle) = item.to_serializable_item_handle(cx) {
 6667                        item_ids_by_kind
 6668                            .entry(serializable_item_handle.serialized_item_kind())
 6669                            .or_insert(Vec::new())
 6670                            .push(item.item_id().as_u64() as ItemId);
 6671                    }
 6672
 6673                    if let Some(project_path) = item.project_path(cx) {
 6674                        items_by_project_path.insert(project_path, item.clone());
 6675                    }
 6676                    all_deserialized_items.push(item);
 6677                }
 6678            })?;
 6679
 6680            let opened_items = paths_to_open
 6681                .into_iter()
 6682                .map(|path_to_open| {
 6683                    path_to_open
 6684                        .and_then(|path_to_open| items_by_project_path.remove(&path_to_open))
 6685                })
 6686                .collect::<Vec<_>>();
 6687
 6688            // Remove old panes from workspace panes list
 6689            workspace.update_in(cx, |workspace, window, cx| {
 6690                if let Some((center_group, active_pane)) = center_group {
 6691                    workspace.remove_panes(workspace.center.root.clone(), window, cx);
 6692
 6693                    // Swap workspace center group
 6694                    workspace.center = PaneGroup::with_root(center_group);
 6695                    workspace.center.set_is_center(true);
 6696                    workspace.center.mark_positions(cx);
 6697
 6698                    if let Some(active_pane) = active_pane {
 6699                        workspace.set_active_pane(&active_pane, window, cx);
 6700                        cx.focus_self(window);
 6701                    } else {
 6702                        workspace.set_active_pane(&workspace.center.first_pane(), window, cx);
 6703                    }
 6704                }
 6705
 6706                let docks = serialized_workspace.docks;
 6707
 6708                for (dock, serialized_dock) in [
 6709                    (&mut workspace.right_dock, docks.right),
 6710                    (&mut workspace.left_dock, docks.left),
 6711                    (&mut workspace.bottom_dock, docks.bottom),
 6712                ]
 6713                .iter_mut()
 6714                {
 6715                    dock.update(cx, |dock, cx| {
 6716                        dock.serialized_dock = Some(serialized_dock.clone());
 6717                        dock.restore_state(window, cx);
 6718                    });
 6719                }
 6720
 6721                cx.notify();
 6722            })?;
 6723
 6724            let _ = project
 6725                .update(cx, |project, cx| {
 6726                    project
 6727                        .breakpoint_store()
 6728                        .update(cx, |breakpoint_store, cx| {
 6729                            breakpoint_store
 6730                                .with_serialized_breakpoints(serialized_workspace.breakpoints, cx)
 6731                        })
 6732                })
 6733                .await;
 6734
 6735            // Clean up all the items that have _not_ been loaded. Our ItemIds aren't stable. That means
 6736            // after loading the items, we might have different items and in order to avoid
 6737            // the database filling up, we delete items that haven't been loaded now.
 6738            //
 6739            // The items that have been loaded, have been saved after they've been added to the workspace.
 6740            let clean_up_tasks = workspace.update_in(cx, |_, window, cx| {
 6741                item_ids_by_kind
 6742                    .into_iter()
 6743                    .map(|(item_kind, loaded_items)| {
 6744                        SerializableItemRegistry::cleanup(
 6745                            item_kind,
 6746                            serialized_workspace.id,
 6747                            loaded_items,
 6748                            window,
 6749                            cx,
 6750                        )
 6751                        .log_err()
 6752                    })
 6753                    .collect::<Vec<_>>()
 6754            })?;
 6755
 6756            futures::future::join_all(clean_up_tasks).await;
 6757
 6758            workspace
 6759                .update_in(cx, |workspace, window, cx| {
 6760                    // Serialize ourself to make sure our timestamps and any pane / item changes are replicated
 6761                    workspace.serialize_workspace_internal(window, cx).detach();
 6762
 6763                    // Ensure that we mark the window as edited if we did load dirty items
 6764                    workspace.update_window_edited(window, cx);
 6765                })
 6766                .ok();
 6767
 6768            Ok(opened_items)
 6769        })
 6770    }
 6771
 6772    pub fn key_context(&self, cx: &App) -> KeyContext {
 6773        let mut context = KeyContext::new_with_defaults();
 6774        context.add("Workspace");
 6775        context.set("keyboard_layout", cx.keyboard_layout().name().to_string());
 6776        if let Some(status) = self
 6777            .debugger_provider
 6778            .as_ref()
 6779            .and_then(|provider| provider.active_thread_state(cx))
 6780        {
 6781            match status {
 6782                ThreadStatus::Running | ThreadStatus::Stepping => {
 6783                    context.add("debugger_running");
 6784                }
 6785                ThreadStatus::Stopped => context.add("debugger_stopped"),
 6786                ThreadStatus::Exited | ThreadStatus::Ended => {}
 6787            }
 6788        }
 6789
 6790        if self.left_dock.read(cx).is_open() {
 6791            if let Some(active_panel) = self.left_dock.read(cx).active_panel() {
 6792                context.set("left_dock", active_panel.panel_key());
 6793            }
 6794        }
 6795
 6796        if self.right_dock.read(cx).is_open() {
 6797            if let Some(active_panel) = self.right_dock.read(cx).active_panel() {
 6798                context.set("right_dock", active_panel.panel_key());
 6799            }
 6800        }
 6801
 6802        if self.bottom_dock.read(cx).is_open() {
 6803            if let Some(active_panel) = self.bottom_dock.read(cx).active_panel() {
 6804                context.set("bottom_dock", active_panel.panel_key());
 6805            }
 6806        }
 6807
 6808        context
 6809    }
 6810
 6811    /// Multiworkspace uses this to add workspace action handling to itself
 6812    pub fn actions(&self, div: Div, window: &mut Window, cx: &mut Context<Self>) -> Div {
 6813        self.add_workspace_actions_listeners(div, window, cx)
 6814            .on_action(cx.listener(
 6815                |_workspace, action_sequence: &settings::ActionSequence, window, cx| {
 6816                    for action in &action_sequence.0 {
 6817                        window.dispatch_action(action.boxed_clone(), cx);
 6818                    }
 6819                },
 6820            ))
 6821            .on_action(cx.listener(Self::close_inactive_items_and_panes))
 6822            .on_action(cx.listener(Self::close_all_items_and_panes))
 6823            .on_action(cx.listener(Self::close_item_in_all_panes))
 6824            .on_action(cx.listener(Self::save_all))
 6825            .on_action(cx.listener(Self::send_keystrokes))
 6826            .on_action(cx.listener(Self::add_folder_to_project))
 6827            .on_action(cx.listener(Self::follow_next_collaborator))
 6828            .on_action(cx.listener(Self::activate_pane_at_index))
 6829            .on_action(cx.listener(Self::move_item_to_pane_at_index))
 6830            .on_action(cx.listener(Self::move_focused_panel_to_next_position))
 6831            .on_action(cx.listener(Self::toggle_edit_predictions_all_files))
 6832            .on_action(cx.listener(Self::toggle_theme_mode))
 6833            .on_action(cx.listener(|workspace, _: &Unfollow, window, cx| {
 6834                let pane = workspace.active_pane().clone();
 6835                workspace.unfollow_in_pane(&pane, window, cx);
 6836            }))
 6837            .on_action(cx.listener(|workspace, action: &Save, window, cx| {
 6838                workspace
 6839                    .save_active_item(action.save_intent.unwrap_or(SaveIntent::Save), window, cx)
 6840                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 6841            }))
 6842            .on_action(cx.listener(|workspace, _: &SaveWithoutFormat, window, cx| {
 6843                workspace
 6844                    .save_active_item(SaveIntent::SaveWithoutFormat, window, cx)
 6845                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 6846            }))
 6847            .on_action(cx.listener(|workspace, _: &SaveAs, window, cx| {
 6848                workspace
 6849                    .save_active_item(SaveIntent::SaveAs, window, cx)
 6850                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 6851            }))
 6852            .on_action(
 6853                cx.listener(|workspace, _: &ActivatePreviousPane, window, cx| {
 6854                    workspace.activate_previous_pane(window, cx)
 6855                }),
 6856            )
 6857            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 6858                workspace.activate_next_pane(window, cx)
 6859            }))
 6860            .on_action(cx.listener(|workspace, _: &ActivateLastPane, window, cx| {
 6861                workspace.activate_last_pane(window, cx)
 6862            }))
 6863            .on_action(
 6864                cx.listener(|workspace, _: &ActivateNextWindow, _window, cx| {
 6865                    workspace.activate_next_window(cx)
 6866                }),
 6867            )
 6868            .on_action(
 6869                cx.listener(|workspace, _: &ActivatePreviousWindow, _window, cx| {
 6870                    workspace.activate_previous_window(cx)
 6871                }),
 6872            )
 6873            .on_action(cx.listener(|workspace, _: &ActivatePaneLeft, window, cx| {
 6874                workspace.activate_pane_in_direction(SplitDirection::Left, window, cx)
 6875            }))
 6876            .on_action(cx.listener(|workspace, _: &ActivatePaneRight, window, cx| {
 6877                workspace.activate_pane_in_direction(SplitDirection::Right, window, cx)
 6878            }))
 6879            .on_action(cx.listener(|workspace, _: &ActivatePaneUp, window, cx| {
 6880                workspace.activate_pane_in_direction(SplitDirection::Up, window, cx)
 6881            }))
 6882            .on_action(cx.listener(|workspace, _: &ActivatePaneDown, window, cx| {
 6883                workspace.activate_pane_in_direction(SplitDirection::Down, window, cx)
 6884            }))
 6885            .on_action(cx.listener(
 6886                |workspace, action: &MoveItemToPaneInDirection, window, cx| {
 6887                    workspace.move_item_to_pane_in_direction(action, window, cx)
 6888                },
 6889            ))
 6890            .on_action(cx.listener(|workspace, _: &SwapPaneLeft, _, cx| {
 6891                workspace.swap_pane_in_direction(SplitDirection::Left, cx)
 6892            }))
 6893            .on_action(cx.listener(|workspace, _: &SwapPaneRight, _, cx| {
 6894                workspace.swap_pane_in_direction(SplitDirection::Right, cx)
 6895            }))
 6896            .on_action(cx.listener(|workspace, _: &SwapPaneUp, _, cx| {
 6897                workspace.swap_pane_in_direction(SplitDirection::Up, cx)
 6898            }))
 6899            .on_action(cx.listener(|workspace, _: &SwapPaneDown, _, cx| {
 6900                workspace.swap_pane_in_direction(SplitDirection::Down, cx)
 6901            }))
 6902            .on_action(cx.listener(|workspace, _: &SwapPaneAdjacent, window, cx| {
 6903                const DIRECTION_PRIORITY: [SplitDirection; 4] = [
 6904                    SplitDirection::Down,
 6905                    SplitDirection::Up,
 6906                    SplitDirection::Right,
 6907                    SplitDirection::Left,
 6908                ];
 6909                for dir in DIRECTION_PRIORITY {
 6910                    if workspace.find_pane_in_direction(dir, cx).is_some() {
 6911                        workspace.swap_pane_in_direction(dir, cx);
 6912                        workspace.activate_pane_in_direction(dir.opposite(), window, cx);
 6913                        break;
 6914                    }
 6915                }
 6916            }))
 6917            .on_action(cx.listener(|workspace, _: &MovePaneLeft, _, cx| {
 6918                workspace.move_pane_to_border(SplitDirection::Left, cx)
 6919            }))
 6920            .on_action(cx.listener(|workspace, _: &MovePaneRight, _, cx| {
 6921                workspace.move_pane_to_border(SplitDirection::Right, cx)
 6922            }))
 6923            .on_action(cx.listener(|workspace, _: &MovePaneUp, _, cx| {
 6924                workspace.move_pane_to_border(SplitDirection::Up, cx)
 6925            }))
 6926            .on_action(cx.listener(|workspace, _: &MovePaneDown, _, cx| {
 6927                workspace.move_pane_to_border(SplitDirection::Down, cx)
 6928            }))
 6929            .on_action(cx.listener(|this, _: &ToggleLeftDock, window, cx| {
 6930                this.toggle_dock(DockPosition::Left, window, cx);
 6931            }))
 6932            .on_action(cx.listener(
 6933                |workspace: &mut Workspace, _: &ToggleRightDock, window, cx| {
 6934                    workspace.toggle_dock(DockPosition::Right, window, cx);
 6935                },
 6936            ))
 6937            .on_action(cx.listener(
 6938                |workspace: &mut Workspace, _: &ToggleBottomDock, window, cx| {
 6939                    workspace.toggle_dock(DockPosition::Bottom, window, cx);
 6940                },
 6941            ))
 6942            .on_action(cx.listener(
 6943                |workspace: &mut Workspace, _: &CloseActiveDock, window, cx| {
 6944                    if !workspace.close_active_dock(window, cx) {
 6945                        cx.propagate();
 6946                    }
 6947                },
 6948            ))
 6949            .on_action(
 6950                cx.listener(|workspace: &mut Workspace, _: &CloseAllDocks, window, cx| {
 6951                    workspace.close_all_docks(window, cx);
 6952                }),
 6953            )
 6954            .on_action(cx.listener(Self::toggle_all_docks))
 6955            .on_action(cx.listener(
 6956                |workspace: &mut Workspace, _: &ClearAllNotifications, _, cx| {
 6957                    workspace.clear_all_notifications(cx);
 6958                },
 6959            ))
 6960            .on_action(cx.listener(
 6961                |workspace: &mut Workspace, _: &ClearNavigationHistory, window, cx| {
 6962                    workspace.clear_navigation_history(window, cx);
 6963                },
 6964            ))
 6965            .on_action(cx.listener(
 6966                |workspace: &mut Workspace, _: &SuppressNotification, _, cx| {
 6967                    if let Some((notification_id, _)) = workspace.notifications.pop() {
 6968                        workspace.suppress_notification(&notification_id, cx);
 6969                    }
 6970                },
 6971            ))
 6972            .on_action(cx.listener(
 6973                |workspace: &mut Workspace, _: &ToggleWorktreeSecurity, window, cx| {
 6974                    workspace.show_worktree_trust_security_modal(true, window, cx);
 6975                },
 6976            ))
 6977            .on_action(
 6978                cx.listener(|_: &mut Workspace, _: &ClearTrustedWorktrees, _, cx| {
 6979                    if let Some(trusted_worktrees) = TrustedWorktrees::try_get_global(cx) {
 6980                        trusted_worktrees.update(cx, |trusted_worktrees, _| {
 6981                            trusted_worktrees.clear_trusted_paths()
 6982                        });
 6983                        let db = WorkspaceDb::global(cx);
 6984                        cx.spawn(async move |_, cx| {
 6985                            if db.clear_trusted_worktrees().await.log_err().is_some() {
 6986                                cx.update(|cx| reload(cx));
 6987                            }
 6988                        })
 6989                        .detach();
 6990                    }
 6991                }),
 6992            )
 6993            .on_action(cx.listener(
 6994                |workspace: &mut Workspace, _: &ReopenClosedItem, window, cx| {
 6995                    workspace.reopen_closed_item(window, cx).detach();
 6996                },
 6997            ))
 6998            .on_action(cx.listener(
 6999                |workspace: &mut Workspace, _: &ResetActiveDockSize, window, cx| {
 7000                    for dock in workspace.all_docks() {
 7001                        if dock.focus_handle(cx).contains_focused(window, cx) {
 7002                            let panel = dock.read(cx).active_panel().cloned();
 7003                            if let Some(panel) = panel {
 7004                                dock.update(cx, |dock, cx| {
 7005                                    dock.set_panel_size_state(
 7006                                        panel.as_ref(),
 7007                                        dock::PanelSizeState::default(),
 7008                                        cx,
 7009                                    );
 7010                                });
 7011                            }
 7012                            return;
 7013                        }
 7014                    }
 7015                },
 7016            ))
 7017            .on_action(cx.listener(
 7018                |workspace: &mut Workspace, _: &ResetOpenDocksSize, _window, cx| {
 7019                    for dock in workspace.all_docks() {
 7020                        let panel = dock.read(cx).visible_panel().cloned();
 7021                        if let Some(panel) = panel {
 7022                            dock.update(cx, |dock, cx| {
 7023                                dock.set_panel_size_state(
 7024                                    panel.as_ref(),
 7025                                    dock::PanelSizeState::default(),
 7026                                    cx,
 7027                                );
 7028                            });
 7029                        }
 7030                    }
 7031                },
 7032            ))
 7033            .on_action(cx.listener(
 7034                |workspace: &mut Workspace, act: &IncreaseActiveDockSize, window, cx| {
 7035                    adjust_active_dock_size_by_px(
 7036                        px_with_ui_font_fallback(act.px, cx),
 7037                        workspace,
 7038                        window,
 7039                        cx,
 7040                    );
 7041                },
 7042            ))
 7043            .on_action(cx.listener(
 7044                |workspace: &mut Workspace, act: &DecreaseActiveDockSize, window, cx| {
 7045                    adjust_active_dock_size_by_px(
 7046                        px_with_ui_font_fallback(act.px, cx) * -1.,
 7047                        workspace,
 7048                        window,
 7049                        cx,
 7050                    );
 7051                },
 7052            ))
 7053            .on_action(cx.listener(
 7054                |workspace: &mut Workspace, act: &IncreaseOpenDocksSize, window, cx| {
 7055                    adjust_open_docks_size_by_px(
 7056                        px_with_ui_font_fallback(act.px, cx),
 7057                        workspace,
 7058                        window,
 7059                        cx,
 7060                    );
 7061                },
 7062            ))
 7063            .on_action(cx.listener(
 7064                |workspace: &mut Workspace, act: &DecreaseOpenDocksSize, window, cx| {
 7065                    adjust_open_docks_size_by_px(
 7066                        px_with_ui_font_fallback(act.px, cx) * -1.,
 7067                        workspace,
 7068                        window,
 7069                        cx,
 7070                    );
 7071                },
 7072            ))
 7073            .on_action(cx.listener(Workspace::toggle_centered_layout))
 7074            .on_action(cx.listener(
 7075                |workspace: &mut Workspace, _action: &pane::ActivateNextItem, window, cx| {
 7076                    if let Some(active_dock) = workspace.active_dock(window, cx) {
 7077                        let dock = active_dock.read(cx);
 7078                        if let Some(active_panel) = dock.active_panel() {
 7079                            if active_panel.pane(cx).is_none() {
 7080                                let mut recent_pane: Option<Entity<Pane>> = None;
 7081                                let mut recent_timestamp = 0;
 7082                                for pane_handle in workspace.panes() {
 7083                                    let pane = pane_handle.read(cx);
 7084                                    for entry in pane.activation_history() {
 7085                                        if entry.timestamp > recent_timestamp {
 7086                                            recent_timestamp = entry.timestamp;
 7087                                            recent_pane = Some(pane_handle.clone());
 7088                                        }
 7089                                    }
 7090                                }
 7091
 7092                                if let Some(pane) = recent_pane {
 7093                                    pane.update(cx, |pane, cx| {
 7094                                        let current_index = pane.active_item_index();
 7095                                        let items_len = pane.items_len();
 7096                                        if items_len > 0 {
 7097                                            let next_index = if current_index + 1 < items_len {
 7098                                                current_index + 1
 7099                                            } else {
 7100                                                0
 7101                                            };
 7102                                            pane.activate_item(
 7103                                                next_index, false, false, window, cx,
 7104                                            );
 7105                                        }
 7106                                    });
 7107                                    return;
 7108                                }
 7109                            }
 7110                        }
 7111                    }
 7112                    cx.propagate();
 7113                },
 7114            ))
 7115            .on_action(cx.listener(
 7116                |workspace: &mut Workspace, _action: &pane::ActivatePreviousItem, window, cx| {
 7117                    if let Some(active_dock) = workspace.active_dock(window, cx) {
 7118                        let dock = active_dock.read(cx);
 7119                        if let Some(active_panel) = dock.active_panel() {
 7120                            if active_panel.pane(cx).is_none() {
 7121                                let mut recent_pane: Option<Entity<Pane>> = None;
 7122                                let mut recent_timestamp = 0;
 7123                                for pane_handle in workspace.panes() {
 7124                                    let pane = pane_handle.read(cx);
 7125                                    for entry in pane.activation_history() {
 7126                                        if entry.timestamp > recent_timestamp {
 7127                                            recent_timestamp = entry.timestamp;
 7128                                            recent_pane = Some(pane_handle.clone());
 7129                                        }
 7130                                    }
 7131                                }
 7132
 7133                                if let Some(pane) = recent_pane {
 7134                                    pane.update(cx, |pane, cx| {
 7135                                        let current_index = pane.active_item_index();
 7136                                        let items_len = pane.items_len();
 7137                                        if items_len > 0 {
 7138                                            let prev_index = if current_index > 0 {
 7139                                                current_index - 1
 7140                                            } else {
 7141                                                items_len.saturating_sub(1)
 7142                                            };
 7143                                            pane.activate_item(
 7144                                                prev_index, false, false, window, cx,
 7145                                            );
 7146                                        }
 7147                                    });
 7148                                    return;
 7149                                }
 7150                            }
 7151                        }
 7152                    }
 7153                    cx.propagate();
 7154                },
 7155            ))
 7156            .on_action(cx.listener(
 7157                |workspace: &mut Workspace, action: &pane::CloseActiveItem, window, cx| {
 7158                    if let Some(active_dock) = workspace.active_dock(window, cx) {
 7159                        let dock = active_dock.read(cx);
 7160                        if let Some(active_panel) = dock.active_panel() {
 7161                            if active_panel.pane(cx).is_none() {
 7162                                let active_pane = workspace.active_pane().clone();
 7163                                active_pane.update(cx, |pane, cx| {
 7164                                    pane.close_active_item(action, window, cx)
 7165                                        .detach_and_log_err(cx);
 7166                                });
 7167                                return;
 7168                            }
 7169                        }
 7170                    }
 7171                    cx.propagate();
 7172                },
 7173            ))
 7174            .on_action(
 7175                cx.listener(|workspace, _: &ToggleReadOnlyFile, window, cx| {
 7176                    let pane = workspace.active_pane().clone();
 7177                    if let Some(item) = pane.read(cx).active_item() {
 7178                        item.toggle_read_only(window, cx);
 7179                    }
 7180                }),
 7181            )
 7182            .on_action(cx.listener(|workspace, _: &FocusCenterPane, window, cx| {
 7183                workspace.focus_center_pane(window, cx);
 7184            }))
 7185            .on_action(cx.listener(Workspace::cancel))
 7186    }
 7187
 7188    #[cfg(any(test, feature = "test-support"))]
 7189    pub fn set_random_database_id(&mut self) {
 7190        self.database_id = Some(WorkspaceId(Uuid::new_v4().as_u64_pair().0 as i64));
 7191    }
 7192
 7193    #[cfg(any(test, feature = "test-support"))]
 7194    pub(crate) fn test_new(
 7195        project: Entity<Project>,
 7196        window: &mut Window,
 7197        cx: &mut Context<Self>,
 7198    ) -> Self {
 7199        use node_runtime::NodeRuntime;
 7200        use session::Session;
 7201
 7202        let client = project.read(cx).client();
 7203        let user_store = project.read(cx).user_store();
 7204        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 7205        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 7206        window.activate_window();
 7207        let app_state = Arc::new(AppState {
 7208            languages: project.read(cx).languages().clone(),
 7209            workspace_store,
 7210            client,
 7211            user_store,
 7212            fs: project.read(cx).fs().clone(),
 7213            build_window_options: |_, _| Default::default(),
 7214            node_runtime: NodeRuntime::unavailable(),
 7215            session,
 7216        });
 7217        let workspace = Self::new(Default::default(), project, app_state, window, cx);
 7218        workspace
 7219            .active_pane
 7220            .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx), cx));
 7221        workspace
 7222    }
 7223
 7224    pub fn register_action<A: Action>(
 7225        &mut self,
 7226        callback: impl Fn(&mut Self, &A, &mut Window, &mut Context<Self>) + 'static,
 7227    ) -> &mut Self {
 7228        let callback = Arc::new(callback);
 7229
 7230        self.workspace_actions.push(Box::new(move |div, _, _, cx| {
 7231            let callback = callback.clone();
 7232            div.on_action(cx.listener(move |workspace, event, window, cx| {
 7233                (callback)(workspace, event, window, cx)
 7234            }))
 7235        }));
 7236        self
 7237    }
 7238    pub fn register_action_renderer(
 7239        &mut self,
 7240        callback: impl Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div + 'static,
 7241    ) -> &mut Self {
 7242        self.workspace_actions.push(Box::new(callback));
 7243        self
 7244    }
 7245
 7246    fn add_workspace_actions_listeners(
 7247        &self,
 7248        mut div: Div,
 7249        window: &mut Window,
 7250        cx: &mut Context<Self>,
 7251    ) -> Div {
 7252        for action in self.workspace_actions.iter() {
 7253            div = (action)(div, self, window, cx)
 7254        }
 7255        div
 7256    }
 7257
 7258    pub fn has_active_modal(&self, _: &mut Window, cx: &mut App) -> bool {
 7259        self.modal_layer.read(cx).has_active_modal()
 7260    }
 7261
 7262    pub fn is_active_modal_command_palette(&self, cx: &mut App) -> bool {
 7263        self.modal_layer
 7264            .read(cx)
 7265            .is_active_modal_command_palette(cx)
 7266    }
 7267
 7268    pub fn active_modal<V: ManagedView + 'static>(&self, cx: &App) -> Option<Entity<V>> {
 7269        self.modal_layer.read(cx).active_modal()
 7270    }
 7271
 7272    /// Toggles a modal of type `V`. If a modal of the same type is currently active,
 7273    /// it will be hidden. If a different modal is active, it will be replaced with the new one.
 7274    /// If no modal is active, the new modal will be shown.
 7275    ///
 7276    /// If closing the current modal fails (e.g., due to `on_before_dismiss` returning
 7277    /// `DismissDecision::Dismiss(false)` or `DismissDecision::Pending`), the new modal
 7278    /// will not be shown.
 7279    pub fn toggle_modal<V: ModalView, B>(&mut self, window: &mut Window, cx: &mut App, build: B)
 7280    where
 7281        B: FnOnce(&mut Window, &mut Context<V>) -> V,
 7282    {
 7283        self.modal_layer.update(cx, |modal_layer, cx| {
 7284            modal_layer.toggle_modal(window, cx, build)
 7285        })
 7286    }
 7287
 7288    pub fn hide_modal(&mut self, window: &mut Window, cx: &mut App) -> bool {
 7289        self.modal_layer
 7290            .update(cx, |modal_layer, cx| modal_layer.hide_modal(window, cx))
 7291    }
 7292
 7293    pub fn toggle_status_toast<V: ToastView>(&mut self, entity: Entity<V>, cx: &mut App) {
 7294        self.toast_layer
 7295            .update(cx, |toast_layer, cx| toast_layer.toggle_toast(cx, entity))
 7296    }
 7297
 7298    pub fn toggle_centered_layout(
 7299        &mut self,
 7300        _: &ToggleCenteredLayout,
 7301        _: &mut Window,
 7302        cx: &mut Context<Self>,
 7303    ) {
 7304        self.centered_layout = !self.centered_layout;
 7305        if let Some(database_id) = self.database_id() {
 7306            let db = WorkspaceDb::global(cx);
 7307            let centered_layout = self.centered_layout;
 7308            cx.background_spawn(async move {
 7309                db.set_centered_layout(database_id, centered_layout).await
 7310            })
 7311            .detach_and_log_err(cx);
 7312        }
 7313        cx.notify();
 7314    }
 7315
 7316    fn adjust_padding(padding: Option<f32>) -> f32 {
 7317        padding
 7318            .unwrap_or(CenteredPaddingSettings::default().0)
 7319            .clamp(
 7320                CenteredPaddingSettings::MIN_PADDING,
 7321                CenteredPaddingSettings::MAX_PADDING,
 7322            )
 7323    }
 7324
 7325    fn render_dock(
 7326        &self,
 7327        position: DockPosition,
 7328        dock: &Entity<Dock>,
 7329        window: &mut Window,
 7330        cx: &mut App,
 7331    ) -> Option<Div> {
 7332        if self.zoomed_position == Some(position) {
 7333            return None;
 7334        }
 7335
 7336        let leader_border = dock.read(cx).active_panel().and_then(|panel| {
 7337            let pane = panel.pane(cx)?;
 7338            let follower_states = &self.follower_states;
 7339            leader_border_for_pane(follower_states, &pane, window, cx)
 7340        });
 7341
 7342        let mut container = div()
 7343            .flex()
 7344            .overflow_hidden()
 7345            .flex_none()
 7346            .child(dock.clone())
 7347            .children(leader_border);
 7348
 7349        // Apply sizing only when the dock is open. When closed the dock is still
 7350        // included in the element tree so its focus handle remains mounted — without
 7351        // this, toggle_panel_focus cannot focus the panel when the dock is closed.
 7352        let dock = dock.read(cx);
 7353        if let Some(panel) = dock.visible_panel() {
 7354            let size_state = dock.stored_panel_size_state(panel.as_ref());
 7355            if position.axis() == Axis::Horizontal {
 7356                let use_flexible = panel.has_flexible_size(window, cx);
 7357                let flex_grow = if use_flexible {
 7358                    size_state
 7359                        .and_then(|state| state.flex)
 7360                        .or_else(|| self.default_dock_flex(position))
 7361                } else {
 7362                    None
 7363                };
 7364                if let Some(grow) = flex_grow {
 7365                    let grow = grow.max(0.001);
 7366                    let style = container.style();
 7367                    style.flex_grow = Some(grow);
 7368                    style.flex_shrink = Some(1.0);
 7369                    style.flex_basis = Some(relative(0.).into());
 7370                } else {
 7371                    let size = size_state
 7372                        .and_then(|state| state.size)
 7373                        .unwrap_or_else(|| panel.default_size(window, cx));
 7374                    container = container.w(size);
 7375                }
 7376            } else {
 7377                let size = size_state
 7378                    .and_then(|state| state.size)
 7379                    .unwrap_or_else(|| panel.default_size(window, cx));
 7380                container = container.h(size);
 7381            }
 7382        }
 7383
 7384        Some(container)
 7385    }
 7386
 7387    pub fn for_window(window: &Window, cx: &App) -> Option<Entity<Workspace>> {
 7388        window
 7389            .root::<MultiWorkspace>()
 7390            .flatten()
 7391            .map(|multi_workspace| multi_workspace.read(cx).workspace().clone())
 7392    }
 7393
 7394    pub fn zoomed_item(&self) -> Option<&AnyWeakView> {
 7395        self.zoomed.as_ref()
 7396    }
 7397
 7398    pub fn activate_next_window(&mut self, cx: &mut Context<Self>) {
 7399        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 7400            return;
 7401        };
 7402        let windows = cx.windows();
 7403        let next_window =
 7404            SystemWindowTabController::get_next_tab_group_window(cx, current_window_id).or_else(
 7405                || {
 7406                    windows
 7407                        .iter()
 7408                        .cycle()
 7409                        .skip_while(|window| window.window_id() != current_window_id)
 7410                        .nth(1)
 7411                },
 7412            );
 7413
 7414        if let Some(window) = next_window {
 7415            window
 7416                .update(cx, |_, window, _| window.activate_window())
 7417                .ok();
 7418        }
 7419    }
 7420
 7421    pub fn activate_previous_window(&mut self, cx: &mut Context<Self>) {
 7422        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 7423            return;
 7424        };
 7425        let windows = cx.windows();
 7426        let prev_window =
 7427            SystemWindowTabController::get_prev_tab_group_window(cx, current_window_id).or_else(
 7428                || {
 7429                    windows
 7430                        .iter()
 7431                        .rev()
 7432                        .cycle()
 7433                        .skip_while(|window| window.window_id() != current_window_id)
 7434                        .nth(1)
 7435                },
 7436            );
 7437
 7438        if let Some(window) = prev_window {
 7439            window
 7440                .update(cx, |_, window, _| window.activate_window())
 7441                .ok();
 7442        }
 7443    }
 7444
 7445    pub fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
 7446        if cx.stop_active_drag(window) {
 7447        } else if let Some((notification_id, _)) = self.notifications.pop() {
 7448            dismiss_app_notification(&notification_id, cx);
 7449        } else {
 7450            cx.propagate();
 7451        }
 7452    }
 7453
 7454    fn resize_dock(
 7455        &mut self,
 7456        dock_pos: DockPosition,
 7457        new_size: Pixels,
 7458        window: &mut Window,
 7459        cx: &mut Context<Self>,
 7460    ) {
 7461        match dock_pos {
 7462            DockPosition::Left => self.resize_left_dock(new_size, window, cx),
 7463            DockPosition::Right => self.resize_right_dock(new_size, window, cx),
 7464            DockPosition::Bottom => self.resize_bottom_dock(new_size, window, cx),
 7465        }
 7466    }
 7467
 7468    fn resize_left_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 7469        let workspace_width = self.bounds.size.width;
 7470        let mut size = new_size.min(workspace_width - RESIZE_HANDLE_SIZE);
 7471
 7472        self.right_dock.read_with(cx, |right_dock, cx| {
 7473            let right_dock_size = right_dock
 7474                .stored_active_panel_size(window, cx)
 7475                .unwrap_or(Pixels::ZERO);
 7476            if right_dock_size + size > workspace_width {
 7477                size = workspace_width - right_dock_size
 7478            }
 7479        });
 7480
 7481        let flex_grow = self.dock_flex_for_size(DockPosition::Left, size, window, cx);
 7482        self.left_dock.update(cx, |left_dock, cx| {
 7483            if WorkspaceSettings::get_global(cx)
 7484                .resize_all_panels_in_dock
 7485                .contains(&DockPosition::Left)
 7486            {
 7487                left_dock.resize_all_panels(Some(size), flex_grow, window, cx);
 7488            } else {
 7489                left_dock.resize_active_panel(Some(size), flex_grow, window, cx);
 7490            }
 7491        });
 7492    }
 7493
 7494    fn resize_right_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 7495        let workspace_width = self.bounds.size.width;
 7496        let mut size = new_size.min(workspace_width - RESIZE_HANDLE_SIZE);
 7497        self.left_dock.read_with(cx, |left_dock, cx| {
 7498            let left_dock_size = left_dock
 7499                .stored_active_panel_size(window, cx)
 7500                .unwrap_or(Pixels::ZERO);
 7501            if left_dock_size + size > workspace_width {
 7502                size = workspace_width - left_dock_size
 7503            }
 7504        });
 7505        let flex_grow = self.dock_flex_for_size(DockPosition::Right, size, window, cx);
 7506        self.right_dock.update(cx, |right_dock, cx| {
 7507            if WorkspaceSettings::get_global(cx)
 7508                .resize_all_panels_in_dock
 7509                .contains(&DockPosition::Right)
 7510            {
 7511                right_dock.resize_all_panels(Some(size), flex_grow, window, cx);
 7512            } else {
 7513                right_dock.resize_active_panel(Some(size), flex_grow, window, cx);
 7514            }
 7515        });
 7516    }
 7517
 7518    fn resize_bottom_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 7519        let size = new_size.min(self.bounds.bottom() - RESIZE_HANDLE_SIZE - self.bounds.top());
 7520        self.bottom_dock.update(cx, |bottom_dock, cx| {
 7521            if WorkspaceSettings::get_global(cx)
 7522                .resize_all_panels_in_dock
 7523                .contains(&DockPosition::Bottom)
 7524            {
 7525                bottom_dock.resize_all_panels(Some(size), None, window, cx);
 7526            } else {
 7527                bottom_dock.resize_active_panel(Some(size), None, window, cx);
 7528            }
 7529        });
 7530    }
 7531
 7532    fn toggle_edit_predictions_all_files(
 7533        &mut self,
 7534        _: &ToggleEditPrediction,
 7535        _window: &mut Window,
 7536        cx: &mut Context<Self>,
 7537    ) {
 7538        let fs = self.project().read(cx).fs().clone();
 7539        let show_edit_predictions = all_language_settings(None, cx).show_edit_predictions(None, cx);
 7540        update_settings_file(fs, cx, move |file, _| {
 7541            file.project.all_languages.defaults.show_edit_predictions = Some(!show_edit_predictions)
 7542        });
 7543    }
 7544
 7545    fn toggle_theme_mode(&mut self, _: &ToggleMode, _window: &mut Window, cx: &mut Context<Self>) {
 7546        let current_mode = ThemeSettings::get_global(cx).theme.mode();
 7547        let next_mode = match current_mode {
 7548            Some(theme_settings::ThemeAppearanceMode::Light) => {
 7549                theme_settings::ThemeAppearanceMode::Dark
 7550            }
 7551            Some(theme_settings::ThemeAppearanceMode::Dark) => {
 7552                theme_settings::ThemeAppearanceMode::Light
 7553            }
 7554            Some(theme_settings::ThemeAppearanceMode::System) | None => {
 7555                match cx.theme().appearance() {
 7556                    theme::Appearance::Light => theme_settings::ThemeAppearanceMode::Dark,
 7557                    theme::Appearance::Dark => theme_settings::ThemeAppearanceMode::Light,
 7558                }
 7559            }
 7560        };
 7561
 7562        let fs = self.project().read(cx).fs().clone();
 7563        settings::update_settings_file(fs, cx, move |settings, _cx| {
 7564            theme_settings::set_mode(settings, next_mode);
 7565        });
 7566    }
 7567
 7568    pub fn show_worktree_trust_security_modal(
 7569        &mut self,
 7570        toggle: bool,
 7571        window: &mut Window,
 7572        cx: &mut Context<Self>,
 7573    ) {
 7574        if let Some(security_modal) = self.active_modal::<SecurityModal>(cx) {
 7575            if toggle {
 7576                security_modal.update(cx, |security_modal, cx| {
 7577                    security_modal.dismiss(cx);
 7578                })
 7579            } else {
 7580                security_modal.update(cx, |security_modal, cx| {
 7581                    security_modal.refresh_restricted_paths(cx);
 7582                });
 7583            }
 7584        } else {
 7585            let has_restricted_worktrees = TrustedWorktrees::try_get_global(cx)
 7586                .map(|trusted_worktrees| {
 7587                    trusted_worktrees
 7588                        .read(cx)
 7589                        .has_restricted_worktrees(&self.project().read(cx).worktree_store(), cx)
 7590                })
 7591                .unwrap_or(false);
 7592            if has_restricted_worktrees {
 7593                let project = self.project().read(cx);
 7594                let remote_host = project
 7595                    .remote_connection_options(cx)
 7596                    .map(RemoteHostLocation::from);
 7597                let worktree_store = project.worktree_store().downgrade();
 7598                self.toggle_modal(window, cx, |_, cx| {
 7599                    SecurityModal::new(worktree_store, remote_host, cx)
 7600                });
 7601            }
 7602        }
 7603    }
 7604}
 7605
 7606pub trait AnyActiveCall {
 7607    fn entity(&self) -> AnyEntity;
 7608    fn is_in_room(&self, _: &App) -> bool;
 7609    fn room_id(&self, _: &App) -> Option<u64>;
 7610    fn channel_id(&self, _: &App) -> Option<ChannelId>;
 7611    fn hang_up(&self, _: &mut App) -> Task<Result<()>>;
 7612    fn unshare_project(&self, _: Entity<Project>, _: &mut App) -> Result<()>;
 7613    fn remote_participant_for_peer_id(&self, _: PeerId, _: &App) -> Option<RemoteCollaborator>;
 7614    fn is_sharing_project(&self, _: &App) -> bool;
 7615    fn has_remote_participants(&self, _: &App) -> bool;
 7616    fn local_participant_is_guest(&self, _: &App) -> bool;
 7617    fn client(&self, _: &App) -> Arc<Client>;
 7618    fn share_on_join(&self, _: &App) -> bool;
 7619    fn join_channel(&self, _: ChannelId, _: &mut App) -> Task<Result<bool>>;
 7620    fn room_update_completed(&self, _: &mut App) -> Task<()>;
 7621    fn most_active_project(&self, _: &App) -> Option<(u64, u64)>;
 7622    fn share_project(&self, _: Entity<Project>, _: &mut App) -> Task<Result<u64>>;
 7623    fn join_project(
 7624        &self,
 7625        _: u64,
 7626        _: Arc<LanguageRegistry>,
 7627        _: Arc<dyn Fs>,
 7628        _: &mut App,
 7629    ) -> Task<Result<Entity<Project>>>;
 7630    fn peer_id_for_user_in_room(&self, _: u64, _: &App) -> Option<PeerId>;
 7631    fn subscribe(
 7632        &self,
 7633        _: &mut Window,
 7634        _: &mut Context<Workspace>,
 7635        _: Box<dyn Fn(&mut Workspace, &ActiveCallEvent, &mut Window, &mut Context<Workspace>)>,
 7636    ) -> Subscription;
 7637    fn create_shared_screen(
 7638        &self,
 7639        _: PeerId,
 7640        _: &Entity<Pane>,
 7641        _: &mut Window,
 7642        _: &mut App,
 7643    ) -> Option<Entity<SharedScreen>>;
 7644}
 7645
 7646#[derive(Clone)]
 7647pub struct GlobalAnyActiveCall(pub Arc<dyn AnyActiveCall>);
 7648impl Global for GlobalAnyActiveCall {}
 7649
 7650impl GlobalAnyActiveCall {
 7651    pub(crate) fn try_global(cx: &App) -> Option<&Self> {
 7652        cx.try_global()
 7653    }
 7654
 7655    pub(crate) fn global(cx: &App) -> &Self {
 7656        cx.global()
 7657    }
 7658}
 7659
 7660pub fn merge_conflict_notification_id() -> NotificationId {
 7661    struct MergeConflictNotification;
 7662    NotificationId::unique::<MergeConflictNotification>()
 7663}
 7664
 7665/// Workspace-local view of a remote participant's location.
 7666#[derive(Clone, Copy, Debug, PartialEq, Eq)]
 7667pub enum ParticipantLocation {
 7668    SharedProject { project_id: u64 },
 7669    UnsharedProject,
 7670    External,
 7671}
 7672
 7673impl ParticipantLocation {
 7674    pub fn from_proto(location: Option<proto::ParticipantLocation>) -> Result<Self> {
 7675        match location
 7676            .and_then(|l| l.variant)
 7677            .context("participant location was not provided")?
 7678        {
 7679            proto::participant_location::Variant::SharedProject(project) => {
 7680                Ok(Self::SharedProject {
 7681                    project_id: project.id,
 7682                })
 7683            }
 7684            proto::participant_location::Variant::UnsharedProject(_) => Ok(Self::UnsharedProject),
 7685            proto::participant_location::Variant::External(_) => Ok(Self::External),
 7686        }
 7687    }
 7688}
 7689/// Workspace-local view of a remote collaborator's state.
 7690/// This is the subset of `call::RemoteParticipant` that workspace needs.
 7691#[derive(Clone)]
 7692pub struct RemoteCollaborator {
 7693    pub user: Arc<User>,
 7694    pub peer_id: PeerId,
 7695    pub location: ParticipantLocation,
 7696    pub participant_index: ParticipantIndex,
 7697}
 7698
 7699pub enum ActiveCallEvent {
 7700    ParticipantLocationChanged { participant_id: PeerId },
 7701    RemoteVideoTracksChanged { participant_id: PeerId },
 7702}
 7703
 7704fn leader_border_for_pane(
 7705    follower_states: &HashMap<CollaboratorId, FollowerState>,
 7706    pane: &Entity<Pane>,
 7707    _: &Window,
 7708    cx: &App,
 7709) -> Option<Div> {
 7710    let (leader_id, _follower_state) = follower_states.iter().find_map(|(leader_id, state)| {
 7711        if state.pane() == pane {
 7712            Some((*leader_id, state))
 7713        } else {
 7714            None
 7715        }
 7716    })?;
 7717
 7718    let mut leader_color = match leader_id {
 7719        CollaboratorId::PeerId(leader_peer_id) => {
 7720            let leader = GlobalAnyActiveCall::try_global(cx)?
 7721                .0
 7722                .remote_participant_for_peer_id(leader_peer_id, cx)?;
 7723
 7724            cx.theme()
 7725                .players()
 7726                .color_for_participant(leader.participant_index.0)
 7727                .cursor
 7728        }
 7729        CollaboratorId::Agent => cx.theme().players().agent().cursor,
 7730    };
 7731    leader_color.fade_out(0.3);
 7732    Some(
 7733        div()
 7734            .absolute()
 7735            .size_full()
 7736            .left_0()
 7737            .top_0()
 7738            .border_2()
 7739            .border_color(leader_color),
 7740    )
 7741}
 7742
 7743fn window_bounds_env_override() -> Option<Bounds<Pixels>> {
 7744    ZED_WINDOW_POSITION
 7745        .zip(*ZED_WINDOW_SIZE)
 7746        .map(|(position, size)| Bounds {
 7747            origin: position,
 7748            size,
 7749        })
 7750}
 7751
 7752fn open_items(
 7753    serialized_workspace: Option<SerializedWorkspace>,
 7754    mut project_paths_to_open: Vec<(PathBuf, Option<ProjectPath>)>,
 7755    window: &mut Window,
 7756    cx: &mut Context<Workspace>,
 7757) -> impl 'static + Future<Output = Result<Vec<Option<Result<Box<dyn ItemHandle>>>>>> + use<> {
 7758    let restored_items = serialized_workspace.map(|serialized_workspace| {
 7759        Workspace::load_workspace(
 7760            serialized_workspace,
 7761            project_paths_to_open
 7762                .iter()
 7763                .map(|(_, project_path)| project_path)
 7764                .cloned()
 7765                .collect(),
 7766            window,
 7767            cx,
 7768        )
 7769    });
 7770
 7771    cx.spawn_in(window, async move |workspace, cx| {
 7772        let mut opened_items = Vec::with_capacity(project_paths_to_open.len());
 7773
 7774        if let Some(restored_items) = restored_items {
 7775            let restored_items = restored_items.await?;
 7776
 7777            let restored_project_paths = restored_items
 7778                .iter()
 7779                .filter_map(|item| {
 7780                    cx.update(|_, cx| item.as_ref()?.project_path(cx))
 7781                        .ok()
 7782                        .flatten()
 7783                })
 7784                .collect::<HashSet<_>>();
 7785
 7786            for restored_item in restored_items {
 7787                opened_items.push(restored_item.map(Ok));
 7788            }
 7789
 7790            project_paths_to_open
 7791                .iter_mut()
 7792                .for_each(|(_, project_path)| {
 7793                    if let Some(project_path_to_open) = project_path
 7794                        && restored_project_paths.contains(project_path_to_open)
 7795                    {
 7796                        *project_path = None;
 7797                    }
 7798                });
 7799        } else {
 7800            for _ in 0..project_paths_to_open.len() {
 7801                opened_items.push(None);
 7802            }
 7803        }
 7804        assert!(opened_items.len() == project_paths_to_open.len());
 7805
 7806        let tasks =
 7807            project_paths_to_open
 7808                .into_iter()
 7809                .enumerate()
 7810                .map(|(ix, (abs_path, project_path))| {
 7811                    let workspace = workspace.clone();
 7812                    cx.spawn(async move |cx| {
 7813                        let file_project_path = project_path?;
 7814                        let abs_path_task = workspace.update(cx, |workspace, cx| {
 7815                            workspace.project().update(cx, |project, cx| {
 7816                                project.resolve_abs_path(abs_path.to_string_lossy().as_ref(), cx)
 7817                            })
 7818                        });
 7819
 7820                        // We only want to open file paths here. If one of the items
 7821                        // here is a directory, it was already opened further above
 7822                        // with a `find_or_create_worktree`.
 7823                        if let Ok(task) = abs_path_task
 7824                            && task.await.is_none_or(|p| p.is_file())
 7825                        {
 7826                            return Some((
 7827                                ix,
 7828                                workspace
 7829                                    .update_in(cx, |workspace, window, cx| {
 7830                                        workspace.open_path(
 7831                                            file_project_path,
 7832                                            None,
 7833                                            true,
 7834                                            window,
 7835                                            cx,
 7836                                        )
 7837                                    })
 7838                                    .log_err()?
 7839                                    .await,
 7840                            ));
 7841                        }
 7842                        None
 7843                    })
 7844                });
 7845
 7846        let tasks = tasks.collect::<Vec<_>>();
 7847
 7848        let tasks = futures::future::join_all(tasks);
 7849        for (ix, path_open_result) in tasks.await.into_iter().flatten() {
 7850            opened_items[ix] = Some(path_open_result);
 7851        }
 7852
 7853        Ok(opened_items)
 7854    })
 7855}
 7856
 7857#[derive(Clone)]
 7858enum ActivateInDirectionTarget {
 7859    Pane(Entity<Pane>),
 7860    Dock(Entity<Dock>),
 7861    Sidebar(FocusHandle),
 7862}
 7863
 7864fn notify_if_database_failed(window: WindowHandle<MultiWorkspace>, cx: &mut AsyncApp) {
 7865    window
 7866        .update(cx, |multi_workspace, _, cx| {
 7867            let workspace = multi_workspace.workspace().clone();
 7868            workspace.update(cx, |workspace, cx| {
 7869                if (*db::ALL_FILE_DB_FAILED).load(std::sync::atomic::Ordering::Acquire) {
 7870                    struct DatabaseFailedNotification;
 7871
 7872                    workspace.show_notification(
 7873                        NotificationId::unique::<DatabaseFailedNotification>(),
 7874                        cx,
 7875                        |cx| {
 7876                            cx.new(|cx| {
 7877                                MessageNotification::new("Failed to load the database file.", cx)
 7878                                    .primary_message("File an Issue")
 7879                                    .primary_icon(IconName::Plus)
 7880                                    .primary_on_click(|window, cx| {
 7881                                        window.dispatch_action(Box::new(FileBugReport), cx)
 7882                                    })
 7883                            })
 7884                        },
 7885                    );
 7886                }
 7887            });
 7888        })
 7889        .log_err();
 7890}
 7891
 7892fn px_with_ui_font_fallback(val: u32, cx: &Context<Workspace>) -> Pixels {
 7893    if val == 0 {
 7894        ThemeSettings::get_global(cx).ui_font_size(cx)
 7895    } else {
 7896        px(val as f32)
 7897    }
 7898}
 7899
 7900fn adjust_active_dock_size_by_px(
 7901    px: Pixels,
 7902    workspace: &mut Workspace,
 7903    window: &mut Window,
 7904    cx: &mut Context<Workspace>,
 7905) {
 7906    let Some(active_dock) = workspace
 7907        .all_docks()
 7908        .into_iter()
 7909        .find(|dock| dock.focus_handle(cx).contains_focused(window, cx))
 7910    else {
 7911        return;
 7912    };
 7913    let dock = active_dock.read(cx);
 7914    let Some(panel_size) = workspace.dock_size(&dock, window, cx) else {
 7915        return;
 7916    };
 7917    workspace.resize_dock(dock.position(), panel_size + px, window, cx);
 7918}
 7919
 7920fn adjust_open_docks_size_by_px(
 7921    px: Pixels,
 7922    workspace: &mut Workspace,
 7923    window: &mut Window,
 7924    cx: &mut Context<Workspace>,
 7925) {
 7926    let docks = workspace
 7927        .all_docks()
 7928        .into_iter()
 7929        .filter_map(|dock_entity| {
 7930            let dock = dock_entity.read(cx);
 7931            if dock.is_open() {
 7932                let dock_pos = dock.position();
 7933                let panel_size = workspace.dock_size(&dock, window, cx)?;
 7934                Some((dock_pos, panel_size + px))
 7935            } else {
 7936                None
 7937            }
 7938        })
 7939        .collect::<Vec<_>>();
 7940
 7941    for (position, new_size) in docks {
 7942        workspace.resize_dock(position, new_size, window, cx);
 7943    }
 7944}
 7945
 7946impl Focusable for Workspace {
 7947    fn focus_handle(&self, cx: &App) -> FocusHandle {
 7948        self.active_pane.focus_handle(cx)
 7949    }
 7950}
 7951
 7952#[derive(Clone)]
 7953struct DraggedDock(DockPosition);
 7954
 7955impl Render for DraggedDock {
 7956    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
 7957        gpui::Empty
 7958    }
 7959}
 7960
 7961impl Render for Workspace {
 7962    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 7963        static FIRST_PAINT: AtomicBool = AtomicBool::new(true);
 7964        if FIRST_PAINT.swap(false, std::sync::atomic::Ordering::Relaxed) {
 7965            log::info!("Rendered first frame");
 7966        }
 7967
 7968        let centered_layout = self.centered_layout
 7969            && self.center.panes().len() == 1
 7970            && self.active_item(cx).is_some();
 7971        let render_padding = |size| {
 7972            (size > 0.0).then(|| {
 7973                div()
 7974                    .h_full()
 7975                    .w(relative(size))
 7976                    .bg(cx.theme().colors().editor_background)
 7977                    .border_color(cx.theme().colors().pane_group_border)
 7978            })
 7979        };
 7980        let paddings = if centered_layout {
 7981            let settings = WorkspaceSettings::get_global(cx).centered_layout;
 7982            (
 7983                render_padding(Self::adjust_padding(
 7984                    settings.left_padding.map(|padding| padding.0),
 7985                )),
 7986                render_padding(Self::adjust_padding(
 7987                    settings.right_padding.map(|padding| padding.0),
 7988                )),
 7989            )
 7990        } else {
 7991            (None, None)
 7992        };
 7993        let ui_font = theme_settings::setup_ui_font(window, cx);
 7994
 7995        let theme = cx.theme().clone();
 7996        let colors = theme.colors();
 7997        let notification_entities = self
 7998            .notifications
 7999            .iter()
 8000            .map(|(_, notification)| notification.entity_id())
 8001            .collect::<Vec<_>>();
 8002        let bottom_dock_layout = WorkspaceSettings::get_global(cx).bottom_dock_layout;
 8003
 8004        div()
 8005            .relative()
 8006            .size_full()
 8007            .flex()
 8008            .flex_col()
 8009            .font(ui_font)
 8010            .gap_0()
 8011                .justify_start()
 8012                .items_start()
 8013                .text_color(colors.text)
 8014                .overflow_hidden()
 8015                .children(self.titlebar_item.clone())
 8016                .on_modifiers_changed(move |_, _, cx| {
 8017                    for &id in &notification_entities {
 8018                        cx.notify(id);
 8019                    }
 8020                })
 8021                .child(
 8022                    div()
 8023                        .size_full()
 8024                        .relative()
 8025                        .flex_1()
 8026                        .flex()
 8027                        .flex_col()
 8028                        .child(
 8029                            div()
 8030                                .id("workspace")
 8031                                .bg(colors.background)
 8032                                .relative()
 8033                                .flex_1()
 8034                                .w_full()
 8035                                .flex()
 8036                                .flex_col()
 8037                                .overflow_hidden()
 8038                                .border_t_1()
 8039                                .border_b_1()
 8040                                .border_color(colors.border)
 8041                                .child({
 8042                                    let this = cx.entity();
 8043                                    canvas(
 8044                                        move |bounds, window, cx| {
 8045                                            this.update(cx, |this, cx| {
 8046                                                let bounds_changed = this.bounds != bounds;
 8047                                                this.bounds = bounds;
 8048
 8049                                                if bounds_changed {
 8050                                                    this.left_dock.update(cx, |dock, cx| {
 8051                                                        dock.clamp_panel_size(
 8052                                                            bounds.size.width,
 8053                                                            window,
 8054                                                            cx,
 8055                                                        )
 8056                                                    });
 8057
 8058                                                    this.right_dock.update(cx, |dock, cx| {
 8059                                                        dock.clamp_panel_size(
 8060                                                            bounds.size.width,
 8061                                                            window,
 8062                                                            cx,
 8063                                                        )
 8064                                                    });
 8065
 8066                                                    this.bottom_dock.update(cx, |dock, cx| {
 8067                                                        dock.clamp_panel_size(
 8068                                                            bounds.size.height,
 8069                                                            window,
 8070                                                            cx,
 8071                                                        )
 8072                                                    });
 8073                                                }
 8074                                            })
 8075                                        },
 8076                                        |_, _, _, _| {},
 8077                                    )
 8078                                    .absolute()
 8079                                    .size_full()
 8080                                })
 8081                                .when(self.zoomed.is_none(), |this| {
 8082                                    this.on_drag_move(cx.listener(
 8083                                        move |workspace,
 8084                                              e: &DragMoveEvent<DraggedDock>,
 8085                                              window,
 8086                                              cx| {
 8087                                            if workspace.previous_dock_drag_coordinates
 8088                                                != Some(e.event.position)
 8089                                            {
 8090                                                workspace.previous_dock_drag_coordinates =
 8091                                                    Some(e.event.position);
 8092
 8093                                                match e.drag(cx).0 {
 8094                                                    DockPosition::Left => {
 8095                                                        workspace.resize_left_dock(
 8096                                                            e.event.position.x
 8097                                                                - workspace.bounds.left(),
 8098                                                            window,
 8099                                                            cx,
 8100                                                        );
 8101                                                    }
 8102                                                    DockPosition::Right => {
 8103                                                        workspace.resize_right_dock(
 8104                                                            workspace.bounds.right()
 8105                                                                - e.event.position.x,
 8106                                                            window,
 8107                                                            cx,
 8108                                                        );
 8109                                                    }
 8110                                                    DockPosition::Bottom => {
 8111                                                        workspace.resize_bottom_dock(
 8112                                                            workspace.bounds.bottom()
 8113                                                                - e.event.position.y,
 8114                                                            window,
 8115                                                            cx,
 8116                                                        );
 8117                                                    }
 8118                                                };
 8119                                                workspace.serialize_workspace(window, cx);
 8120                                            }
 8121                                        },
 8122                                    ))
 8123
 8124                                })
 8125                                .child({
 8126                                    match bottom_dock_layout {
 8127                                        BottomDockLayout::Full => div()
 8128                                            .flex()
 8129                                            .flex_col()
 8130                                            .h_full()
 8131                                            .child(
 8132                                                div()
 8133                                                    .flex()
 8134                                                    .flex_row()
 8135                                                    .flex_1()
 8136                                                    .overflow_hidden()
 8137                                                    .children(self.render_dock(
 8138                                                        DockPosition::Left,
 8139                                                        &self.left_dock,
 8140                                                        window,
 8141                                                        cx,
 8142                                                    ))
 8143
 8144                                                    .child(
 8145                                                        div()
 8146                                                            .flex()
 8147                                                            .flex_col()
 8148                                                            .flex_1()
 8149                                                            .overflow_hidden()
 8150                                                            .child(
 8151                                                                h_flex()
 8152                                                                    .flex_1()
 8153                                                                    .when_some(
 8154                                                                        paddings.0,
 8155                                                                        |this, p| {
 8156                                                                            this.child(
 8157                                                                                p.border_r_1(),
 8158                                                                            )
 8159                                                                        },
 8160                                                                    )
 8161                                                                    .child(self.center.render(
 8162                                                                        self.zoomed.as_ref(),
 8163                                                                        &PaneRenderContext {
 8164                                                                            follower_states:
 8165                                                                                &self.follower_states,
 8166                                                                            active_call: self.active_call(),
 8167                                                                            active_pane: &self.active_pane,
 8168                                                                            app_state: &self.app_state,
 8169                                                                            project: &self.project,
 8170                                                                            workspace: &self.weak_self,
 8171                                                                        },
 8172                                                                        window,
 8173                                                                        cx,
 8174                                                                    ))
 8175                                                                    .when_some(
 8176                                                                        paddings.1,
 8177                                                                        |this, p| {
 8178                                                                            this.child(
 8179                                                                                p.border_l_1(),
 8180                                                                            )
 8181                                                                        },
 8182                                                                    ),
 8183                                                            ),
 8184                                                    )
 8185
 8186                                                    .children(self.render_dock(
 8187                                                        DockPosition::Right,
 8188                                                        &self.right_dock,
 8189                                                        window,
 8190                                                        cx,
 8191                                                    )),
 8192                                            )
 8193                                            .child(div().w_full().children(self.render_dock(
 8194                                                DockPosition::Bottom,
 8195                                                &self.bottom_dock,
 8196                                                window,
 8197                                                cx
 8198                                            ))),
 8199
 8200                                        BottomDockLayout::LeftAligned => div()
 8201                                            .flex()
 8202                                            .flex_row()
 8203                                            .h_full()
 8204                                            .child(
 8205                                                div()
 8206                                                    .flex()
 8207                                                    .flex_col()
 8208                                                    .flex_1()
 8209                                                    .h_full()
 8210                                                    .child(
 8211                                                        div()
 8212                                                            .flex()
 8213                                                            .flex_row()
 8214                                                            .flex_1()
 8215                                                            .children(self.render_dock(DockPosition::Left, &self.left_dock, window, cx))
 8216
 8217                                                            .child(
 8218                                                                div()
 8219                                                                    .flex()
 8220                                                                    .flex_col()
 8221                                                                    .flex_1()
 8222                                                                    .overflow_hidden()
 8223                                                                    .child(
 8224                                                                        h_flex()
 8225                                                                            .flex_1()
 8226                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 8227                                                                            .child(self.center.render(
 8228                                                                                self.zoomed.as_ref(),
 8229                                                                                &PaneRenderContext {
 8230                                                                                    follower_states:
 8231                                                                                        &self.follower_states,
 8232                                                                                    active_call: self.active_call(),
 8233                                                                                    active_pane: &self.active_pane,
 8234                                                                                    app_state: &self.app_state,
 8235                                                                                    project: &self.project,
 8236                                                                                    workspace: &self.weak_self,
 8237                                                                                },
 8238                                                                                window,
 8239                                                                                cx,
 8240                                                                            ))
 8241                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 8242                                                                    )
 8243                                                            )
 8244
 8245                                                    )
 8246                                                    .child(
 8247                                                        div()
 8248                                                            .w_full()
 8249                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 8250                                                    ),
 8251                                            )
 8252                                            .children(self.render_dock(
 8253                                                DockPosition::Right,
 8254                                                &self.right_dock,
 8255                                                window,
 8256                                                cx,
 8257                                            )),
 8258                                        BottomDockLayout::RightAligned => div()
 8259                                            .flex()
 8260                                            .flex_row()
 8261                                            .h_full()
 8262                                            .children(self.render_dock(
 8263                                                DockPosition::Left,
 8264                                                &self.left_dock,
 8265                                                window,
 8266                                                cx,
 8267                                            ))
 8268
 8269                                            .child(
 8270                                                div()
 8271                                                    .flex()
 8272                                                    .flex_col()
 8273                                                    .flex_1()
 8274                                                    .h_full()
 8275                                                    .child(
 8276                                                        div()
 8277                                                            .flex()
 8278                                                            .flex_row()
 8279                                                            .flex_1()
 8280                                                            .child(
 8281                                                                div()
 8282                                                                    .flex()
 8283                                                                    .flex_col()
 8284                                                                    .flex_1()
 8285                                                                    .overflow_hidden()
 8286                                                                    .child(
 8287                                                                        h_flex()
 8288                                                                            .flex_1()
 8289                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 8290                                                                            .child(self.center.render(
 8291                                                                                self.zoomed.as_ref(),
 8292                                                                                &PaneRenderContext {
 8293                                                                                    follower_states:
 8294                                                                                        &self.follower_states,
 8295                                                                                    active_call: self.active_call(),
 8296                                                                                    active_pane: &self.active_pane,
 8297                                                                                    app_state: &self.app_state,
 8298                                                                                    project: &self.project,
 8299                                                                                    workspace: &self.weak_self,
 8300                                                                                },
 8301                                                                                window,
 8302                                                                                cx,
 8303                                                                            ))
 8304                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 8305                                                                    )
 8306                                                            )
 8307
 8308                                                            .children(self.render_dock(DockPosition::Right, &self.right_dock, window, cx))
 8309                                                    )
 8310                                                    .child(
 8311                                                        div()
 8312                                                            .w_full()
 8313                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 8314                                                    ),
 8315                                            ),
 8316                                        BottomDockLayout::Contained => div()
 8317                                            .flex()
 8318                                            .flex_row()
 8319                                            .h_full()
 8320                                            .children(self.render_dock(
 8321                                                DockPosition::Left,
 8322                                                &self.left_dock,
 8323                                                window,
 8324                                                cx,
 8325                                            ))
 8326
 8327                                            .child(
 8328                                                div()
 8329                                                    .flex()
 8330                                                    .flex_col()
 8331                                                    .flex_1()
 8332                                                    .overflow_hidden()
 8333                                                    .child(
 8334                                                        h_flex()
 8335                                                            .flex_1()
 8336                                                            .when_some(paddings.0, |this, p| {
 8337                                                                this.child(p.border_r_1())
 8338                                                            })
 8339                                                            .child(self.center.render(
 8340                                                                self.zoomed.as_ref(),
 8341                                                                &PaneRenderContext {
 8342                                                                    follower_states:
 8343                                                                        &self.follower_states,
 8344                                                                    active_call: self.active_call(),
 8345                                                                    active_pane: &self.active_pane,
 8346                                                                    app_state: &self.app_state,
 8347                                                                    project: &self.project,
 8348                                                                    workspace: &self.weak_self,
 8349                                                                },
 8350                                                                window,
 8351                                                                cx,
 8352                                                            ))
 8353                                                            .when_some(paddings.1, |this, p| {
 8354                                                                this.child(p.border_l_1())
 8355                                                            }),
 8356                                                    )
 8357                                                    .children(self.render_dock(
 8358                                                        DockPosition::Bottom,
 8359                                                        &self.bottom_dock,
 8360                                                        window,
 8361                                                        cx,
 8362                                                    )),
 8363                                            )
 8364
 8365                                            .children(self.render_dock(
 8366                                                DockPosition::Right,
 8367                                                &self.right_dock,
 8368                                                window,
 8369                                                cx,
 8370                                            )),
 8371                                    }
 8372                                })
 8373                                .children(self.zoomed.as_ref().and_then(|view| {
 8374                                    let zoomed_view = view.upgrade()?;
 8375                                    let div = div()
 8376                                        .occlude()
 8377                                        .absolute()
 8378                                        .overflow_hidden()
 8379                                        .border_color(colors.border)
 8380                                        .bg(colors.background)
 8381                                        .child(zoomed_view)
 8382                                        .inset_0()
 8383                                        .shadow_lg();
 8384
 8385                                    if !WorkspaceSettings::get_global(cx).zoomed_padding {
 8386                                       return Some(div);
 8387                                    }
 8388
 8389                                    Some(match self.zoomed_position {
 8390                                        Some(DockPosition::Left) => div.right_2().border_r_1(),
 8391                                        Some(DockPosition::Right) => div.left_2().border_l_1(),
 8392                                        Some(DockPosition::Bottom) => div.top_2().border_t_1(),
 8393                                        None => {
 8394                                            div.top_2().bottom_2().left_2().right_2().border_1()
 8395                                        }
 8396                                    })
 8397                                }))
 8398                                .children(self.render_notifications(window, cx)),
 8399                        )
 8400                        .when(self.status_bar_visible(cx), |parent| {
 8401                            parent.child(self.status_bar.clone())
 8402                        })
 8403                        .child(self.toast_layer.clone()),
 8404                )
 8405    }
 8406}
 8407
 8408impl WorkspaceStore {
 8409    pub fn new(client: Arc<Client>, cx: &mut Context<Self>) -> Self {
 8410        Self {
 8411            workspaces: Default::default(),
 8412            _subscriptions: vec![
 8413                client.add_request_handler(cx.weak_entity(), Self::handle_follow),
 8414                client.add_message_handler(cx.weak_entity(), Self::handle_update_followers),
 8415            ],
 8416            client,
 8417        }
 8418    }
 8419
 8420    pub fn update_followers(
 8421        &self,
 8422        project_id: Option<u64>,
 8423        update: proto::update_followers::Variant,
 8424        cx: &App,
 8425    ) -> Option<()> {
 8426        let active_call = GlobalAnyActiveCall::try_global(cx)?;
 8427        let room_id = active_call.0.room_id(cx)?;
 8428        self.client
 8429            .send(proto::UpdateFollowers {
 8430                room_id,
 8431                project_id,
 8432                variant: Some(update),
 8433            })
 8434            .log_err()
 8435    }
 8436
 8437    pub async fn handle_follow(
 8438        this: Entity<Self>,
 8439        envelope: TypedEnvelope<proto::Follow>,
 8440        mut cx: AsyncApp,
 8441    ) -> Result<proto::FollowResponse> {
 8442        this.update(&mut cx, |this, cx| {
 8443            let follower = Follower {
 8444                project_id: envelope.payload.project_id,
 8445                peer_id: envelope.original_sender_id()?,
 8446            };
 8447
 8448            let mut response = proto::FollowResponse::default();
 8449
 8450            this.workspaces.retain(|(window_handle, weak_workspace)| {
 8451                let Some(workspace) = weak_workspace.upgrade() else {
 8452                    return false;
 8453                };
 8454                window_handle
 8455                    .update(cx, |_, window, cx| {
 8456                        workspace.update(cx, |workspace, cx| {
 8457                            let handler_response =
 8458                                workspace.handle_follow(follower.project_id, window, cx);
 8459                            if let Some(active_view) = handler_response.active_view
 8460                                && workspace.project.read(cx).remote_id() == follower.project_id
 8461                            {
 8462                                response.active_view = Some(active_view)
 8463                            }
 8464                        });
 8465                    })
 8466                    .is_ok()
 8467            });
 8468
 8469            Ok(response)
 8470        })
 8471    }
 8472
 8473    async fn handle_update_followers(
 8474        this: Entity<Self>,
 8475        envelope: TypedEnvelope<proto::UpdateFollowers>,
 8476        mut cx: AsyncApp,
 8477    ) -> Result<()> {
 8478        let leader_id = envelope.original_sender_id()?;
 8479        let update = envelope.payload;
 8480
 8481        this.update(&mut cx, |this, cx| {
 8482            this.workspaces.retain(|(window_handle, weak_workspace)| {
 8483                let Some(workspace) = weak_workspace.upgrade() else {
 8484                    return false;
 8485                };
 8486                window_handle
 8487                    .update(cx, |_, window, cx| {
 8488                        workspace.update(cx, |workspace, cx| {
 8489                            let project_id = workspace.project.read(cx).remote_id();
 8490                            if update.project_id != project_id && update.project_id.is_some() {
 8491                                return;
 8492                            }
 8493                            workspace.handle_update_followers(
 8494                                leader_id,
 8495                                update.clone(),
 8496                                window,
 8497                                cx,
 8498                            );
 8499                        });
 8500                    })
 8501                    .is_ok()
 8502            });
 8503            Ok(())
 8504        })
 8505    }
 8506
 8507    pub fn workspaces(&self) -> impl Iterator<Item = &WeakEntity<Workspace>> {
 8508        self.workspaces.iter().map(|(_, weak)| weak)
 8509    }
 8510
 8511    pub fn workspaces_with_windows(
 8512        &self,
 8513    ) -> impl Iterator<Item = (gpui::AnyWindowHandle, &WeakEntity<Workspace>)> {
 8514        self.workspaces.iter().map(|(window, weak)| (*window, weak))
 8515    }
 8516}
 8517
 8518impl ViewId {
 8519    pub(crate) fn from_proto(message: proto::ViewId) -> Result<Self> {
 8520        Ok(Self {
 8521            creator: message
 8522                .creator
 8523                .map(CollaboratorId::PeerId)
 8524                .context("creator is missing")?,
 8525            id: message.id,
 8526        })
 8527    }
 8528
 8529    pub(crate) fn to_proto(self) -> Option<proto::ViewId> {
 8530        if let CollaboratorId::PeerId(peer_id) = self.creator {
 8531            Some(proto::ViewId {
 8532                creator: Some(peer_id),
 8533                id: self.id,
 8534            })
 8535        } else {
 8536            None
 8537        }
 8538    }
 8539}
 8540
 8541impl FollowerState {
 8542    fn pane(&self) -> &Entity<Pane> {
 8543        self.dock_pane.as_ref().unwrap_or(&self.center_pane)
 8544    }
 8545}
 8546
 8547pub trait WorkspaceHandle {
 8548    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath>;
 8549}
 8550
 8551impl WorkspaceHandle for Entity<Workspace> {
 8552    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath> {
 8553        self.read(cx)
 8554            .worktrees(cx)
 8555            .flat_map(|worktree| {
 8556                let worktree_id = worktree.read(cx).id();
 8557                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
 8558                    worktree_id,
 8559                    path: f.path.clone(),
 8560                })
 8561            })
 8562            .collect::<Vec<_>>()
 8563    }
 8564}
 8565
 8566pub async fn last_opened_workspace_location(
 8567    db: &WorkspaceDb,
 8568    fs: &dyn fs::Fs,
 8569) -> Option<(WorkspaceId, SerializedWorkspaceLocation, PathList)> {
 8570    db.last_workspace(fs)
 8571        .await
 8572        .log_err()
 8573        .flatten()
 8574        .map(|(id, location, paths, _timestamp)| (id, location, paths))
 8575}
 8576
 8577pub async fn last_session_workspace_locations(
 8578    db: &WorkspaceDb,
 8579    last_session_id: &str,
 8580    last_session_window_stack: Option<Vec<WindowId>>,
 8581    fs: &dyn fs::Fs,
 8582) -> Option<Vec<SessionWorkspace>> {
 8583    db.last_session_workspace_locations(last_session_id, last_session_window_stack, fs)
 8584        .await
 8585        .log_err()
 8586}
 8587
 8588pub struct MultiWorkspaceRestoreResult {
 8589    pub window_handle: WindowHandle<MultiWorkspace>,
 8590    pub errors: Vec<anyhow::Error>,
 8591}
 8592
 8593pub async fn restore_multiworkspace(
 8594    multi_workspace: SerializedMultiWorkspace,
 8595    app_state: Arc<AppState>,
 8596    cx: &mut AsyncApp,
 8597) -> anyhow::Result<MultiWorkspaceRestoreResult> {
 8598    let SerializedMultiWorkspace { workspaces, state } = multi_workspace;
 8599    let mut group_iter = workspaces.into_iter();
 8600    let first = group_iter
 8601        .next()
 8602        .context("window group must not be empty")?;
 8603
 8604    let window_handle = if first.paths.is_empty() {
 8605        cx.update(|cx| open_workspace_by_id(first.workspace_id, app_state.clone(), None, cx))
 8606            .await?
 8607    } else {
 8608        let OpenResult { window, .. } = cx
 8609            .update(|cx| {
 8610                Workspace::new_local(
 8611                    first.paths.paths().to_vec(),
 8612                    app_state.clone(),
 8613                    None,
 8614                    None,
 8615                    None,
 8616                    OpenMode::Activate,
 8617                    cx,
 8618                )
 8619            })
 8620            .await?;
 8621        window
 8622    };
 8623
 8624    let mut errors = Vec::new();
 8625
 8626    for session_workspace in group_iter {
 8627        let error = if session_workspace.paths.is_empty() {
 8628            cx.update(|cx| {
 8629                open_workspace_by_id(
 8630                    session_workspace.workspace_id,
 8631                    app_state.clone(),
 8632                    Some(window_handle),
 8633                    cx,
 8634                )
 8635            })
 8636            .await
 8637            .err()
 8638        } else {
 8639            cx.update(|cx| {
 8640                Workspace::new_local(
 8641                    session_workspace.paths.paths().to_vec(),
 8642                    app_state.clone(),
 8643                    Some(window_handle),
 8644                    None,
 8645                    None,
 8646                    OpenMode::Add,
 8647                    cx,
 8648                )
 8649            })
 8650            .await
 8651            .err()
 8652        };
 8653
 8654        if let Some(error) = error {
 8655            errors.push(error);
 8656        }
 8657    }
 8658
 8659    if let Some(target_id) = state.active_workspace_id {
 8660        window_handle
 8661            .update(cx, |multi_workspace, window, cx| {
 8662                let target_index = multi_workspace
 8663                    .workspaces()
 8664                    .iter()
 8665                    .position(|ws| ws.read(cx).database_id() == Some(target_id));
 8666                let index = target_index.unwrap_or(0);
 8667                if let Some(workspace) = multi_workspace.workspaces().get(index).cloned() {
 8668                    multi_workspace.activate(workspace, window, cx);
 8669                }
 8670            })
 8671            .ok();
 8672    } else {
 8673        window_handle
 8674            .update(cx, |multi_workspace, window, cx| {
 8675                if let Some(workspace) = multi_workspace.workspaces().first().cloned() {
 8676                    multi_workspace.activate(workspace, window, cx);
 8677                }
 8678            })
 8679            .ok();
 8680    }
 8681
 8682    if state.sidebar_open {
 8683        window_handle
 8684            .update(cx, |multi_workspace, _, cx| {
 8685                multi_workspace.open_sidebar(cx);
 8686            })
 8687            .ok();
 8688    }
 8689
 8690    window_handle
 8691        .update(cx, |_, window, _cx| {
 8692            window.activate_window();
 8693        })
 8694        .ok();
 8695
 8696    Ok(MultiWorkspaceRestoreResult {
 8697        window_handle,
 8698        errors,
 8699    })
 8700}
 8701
 8702actions!(
 8703    collab,
 8704    [
 8705        /// Opens the channel notes for the current call.
 8706        ///
 8707        /// Use `collab_panel::OpenSelectedChannelNotes` to open the channel notes for the selected
 8708        /// channel in the collab panel.
 8709        ///
 8710        /// If you want to open a specific channel, use `zed::OpenZedUrl` with a channel notes URL -
 8711        /// can be copied via "Copy link to section" in the context menu of the channel notes
 8712        /// buffer. These URLs look like `https://zed.dev/channel/channel-name-CHANNEL_ID/notes`.
 8713        OpenChannelNotes,
 8714        /// Mutes your microphone.
 8715        Mute,
 8716        /// Deafens yourself (mute both microphone and speakers).
 8717        Deafen,
 8718        /// Leaves the current call.
 8719        LeaveCall,
 8720        /// Shares the current project with collaborators.
 8721        ShareProject,
 8722        /// Shares your screen with collaborators.
 8723        ScreenShare,
 8724        /// Copies the current room name and session id for debugging purposes.
 8725        CopyRoomId,
 8726    ]
 8727);
 8728
 8729/// Opens the channel notes for a specific channel by its ID.
 8730#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
 8731#[action(namespace = collab)]
 8732#[serde(deny_unknown_fields)]
 8733pub struct OpenChannelNotesById {
 8734    pub channel_id: u64,
 8735}
 8736
 8737actions!(
 8738    zed,
 8739    [
 8740        /// Opens the Zed log file.
 8741        OpenLog,
 8742        /// Reveals the Zed log file in the system file manager.
 8743        RevealLogInFileManager
 8744    ]
 8745);
 8746
 8747async fn join_channel_internal(
 8748    channel_id: ChannelId,
 8749    app_state: &Arc<AppState>,
 8750    requesting_window: Option<WindowHandle<MultiWorkspace>>,
 8751    requesting_workspace: Option<WeakEntity<Workspace>>,
 8752    active_call: &dyn AnyActiveCall,
 8753    cx: &mut AsyncApp,
 8754) -> Result<bool> {
 8755    let (should_prompt, already_in_channel) = cx.update(|cx| {
 8756        if !active_call.is_in_room(cx) {
 8757            return (false, false);
 8758        }
 8759
 8760        let already_in_channel = active_call.channel_id(cx) == Some(channel_id);
 8761        let should_prompt = active_call.is_sharing_project(cx)
 8762            && active_call.has_remote_participants(cx)
 8763            && !already_in_channel;
 8764        (should_prompt, already_in_channel)
 8765    });
 8766
 8767    if already_in_channel {
 8768        let task = cx.update(|cx| {
 8769            if let Some((project, host)) = active_call.most_active_project(cx) {
 8770                Some(join_in_room_project(project, host, app_state.clone(), cx))
 8771            } else {
 8772                None
 8773            }
 8774        });
 8775        if let Some(task) = task {
 8776            task.await?;
 8777        }
 8778        return anyhow::Ok(true);
 8779    }
 8780
 8781    if should_prompt {
 8782        if let Some(multi_workspace) = requesting_window {
 8783            let answer = multi_workspace
 8784                .update(cx, |_, window, cx| {
 8785                    window.prompt(
 8786                        PromptLevel::Warning,
 8787                        "Do you want to switch channels?",
 8788                        Some("Leaving this call will unshare your current project."),
 8789                        &["Yes, Join Channel", "Cancel"],
 8790                        cx,
 8791                    )
 8792                })?
 8793                .await;
 8794
 8795            if answer == Ok(1) {
 8796                return Ok(false);
 8797            }
 8798        } else {
 8799            return Ok(false);
 8800        }
 8801    }
 8802
 8803    let client = cx.update(|cx| active_call.client(cx));
 8804
 8805    let mut client_status = client.status();
 8806
 8807    // this loop will terminate within client::CONNECTION_TIMEOUT seconds.
 8808    'outer: loop {
 8809        let Some(status) = client_status.recv().await else {
 8810            anyhow::bail!("error connecting");
 8811        };
 8812
 8813        match status {
 8814            Status::Connecting
 8815            | Status::Authenticating
 8816            | Status::Authenticated
 8817            | Status::Reconnecting
 8818            | Status::Reauthenticating
 8819            | Status::Reauthenticated => continue,
 8820            Status::Connected { .. } => break 'outer,
 8821            Status::SignedOut | Status::AuthenticationError => {
 8822                return Err(ErrorCode::SignedOut.into());
 8823            }
 8824            Status::UpgradeRequired => return Err(ErrorCode::UpgradeRequired.into()),
 8825            Status::ConnectionError | Status::ConnectionLost | Status::ReconnectionError { .. } => {
 8826                return Err(ErrorCode::Disconnected.into());
 8827            }
 8828        }
 8829    }
 8830
 8831    let joined = cx
 8832        .update(|cx| active_call.join_channel(channel_id, cx))
 8833        .await?;
 8834
 8835    if !joined {
 8836        return anyhow::Ok(true);
 8837    }
 8838
 8839    cx.update(|cx| active_call.room_update_completed(cx)).await;
 8840
 8841    let task = cx.update(|cx| {
 8842        if let Some((project, host)) = active_call.most_active_project(cx) {
 8843            return Some(join_in_room_project(project, host, app_state.clone(), cx));
 8844        }
 8845
 8846        // If you are the first to join a channel, see if you should share your project.
 8847        if !active_call.has_remote_participants(cx)
 8848            && !active_call.local_participant_is_guest(cx)
 8849            && let Some(workspace) = requesting_workspace.as_ref().and_then(|w| w.upgrade())
 8850        {
 8851            let project = workspace.update(cx, |workspace, cx| {
 8852                let project = workspace.project.read(cx);
 8853
 8854                if !active_call.share_on_join(cx) {
 8855                    return None;
 8856                }
 8857
 8858                if (project.is_local() || project.is_via_remote_server())
 8859                    && project.visible_worktrees(cx).any(|tree| {
 8860                        tree.read(cx)
 8861                            .root_entry()
 8862                            .is_some_and(|entry| entry.is_dir())
 8863                    })
 8864                {
 8865                    Some(workspace.project.clone())
 8866                } else {
 8867                    None
 8868                }
 8869            });
 8870            if let Some(project) = project {
 8871                let share_task = active_call.share_project(project, cx);
 8872                return Some(cx.spawn(async move |_cx| -> Result<()> {
 8873                    share_task.await?;
 8874                    Ok(())
 8875                }));
 8876            }
 8877        }
 8878
 8879        None
 8880    });
 8881    if let Some(task) = task {
 8882        task.await?;
 8883        return anyhow::Ok(true);
 8884    }
 8885    anyhow::Ok(false)
 8886}
 8887
 8888pub fn join_channel(
 8889    channel_id: ChannelId,
 8890    app_state: Arc<AppState>,
 8891    requesting_window: Option<WindowHandle<MultiWorkspace>>,
 8892    requesting_workspace: Option<WeakEntity<Workspace>>,
 8893    cx: &mut App,
 8894) -> Task<Result<()>> {
 8895    let active_call = GlobalAnyActiveCall::global(cx).clone();
 8896    cx.spawn(async move |cx| {
 8897        let result = join_channel_internal(
 8898            channel_id,
 8899            &app_state,
 8900            requesting_window,
 8901            requesting_workspace,
 8902            &*active_call.0,
 8903            cx,
 8904        )
 8905        .await;
 8906
 8907        // join channel succeeded, and opened a window
 8908        if matches!(result, Ok(true)) {
 8909            return anyhow::Ok(());
 8910        }
 8911
 8912        // find an existing workspace to focus and show call controls
 8913        let mut active_window = requesting_window.or_else(|| activate_any_workspace_window(cx));
 8914        if active_window.is_none() {
 8915            // no open workspaces, make one to show the error in (blergh)
 8916            let OpenResult {
 8917                window: window_handle,
 8918                ..
 8919            } = cx
 8920                .update(|cx| {
 8921                    Workspace::new_local(
 8922                        vec![],
 8923                        app_state.clone(),
 8924                        requesting_window,
 8925                        None,
 8926                        None,
 8927                        OpenMode::Activate,
 8928                        cx,
 8929                    )
 8930                })
 8931                .await?;
 8932
 8933            window_handle
 8934                .update(cx, |_, window, _cx| {
 8935                    window.activate_window();
 8936                })
 8937                .ok();
 8938
 8939            if result.is_ok() {
 8940                cx.update(|cx| {
 8941                    cx.dispatch_action(&OpenChannelNotes);
 8942                });
 8943            }
 8944
 8945            active_window = Some(window_handle);
 8946        }
 8947
 8948        if let Err(err) = result {
 8949            log::error!("failed to join channel: {}", err);
 8950            if let Some(active_window) = active_window {
 8951                active_window
 8952                    .update(cx, |_, window, cx| {
 8953                        let detail: SharedString = match err.error_code() {
 8954                            ErrorCode::SignedOut => "Please sign in to continue.".into(),
 8955                            ErrorCode::UpgradeRequired => concat!(
 8956                                "Your are running an unsupported version of Zed. ",
 8957                                "Please update to continue."
 8958                            )
 8959                            .into(),
 8960                            ErrorCode::NoSuchChannel => concat!(
 8961                                "No matching channel was found. ",
 8962                                "Please check the link and try again."
 8963                            )
 8964                            .into(),
 8965                            ErrorCode::Forbidden => concat!(
 8966                                "This channel is private, and you do not have access. ",
 8967                                "Please ask someone to add you and try again."
 8968                            )
 8969                            .into(),
 8970                            ErrorCode::Disconnected => {
 8971                                "Please check your internet connection and try again.".into()
 8972                            }
 8973                            _ => format!("{}\n\nPlease try again.", err).into(),
 8974                        };
 8975                        window.prompt(
 8976                            PromptLevel::Critical,
 8977                            "Failed to join channel",
 8978                            Some(&detail),
 8979                            &["Ok"],
 8980                            cx,
 8981                        )
 8982                    })?
 8983                    .await
 8984                    .ok();
 8985            }
 8986        }
 8987
 8988        // return ok, we showed the error to the user.
 8989        anyhow::Ok(())
 8990    })
 8991}
 8992
 8993pub async fn get_any_active_multi_workspace(
 8994    app_state: Arc<AppState>,
 8995    mut cx: AsyncApp,
 8996) -> anyhow::Result<WindowHandle<MultiWorkspace>> {
 8997    // find an existing workspace to focus and show call controls
 8998    let active_window = activate_any_workspace_window(&mut cx);
 8999    if active_window.is_none() {
 9000        cx.update(|cx| {
 9001            Workspace::new_local(
 9002                vec![],
 9003                app_state.clone(),
 9004                None,
 9005                None,
 9006                None,
 9007                OpenMode::Activate,
 9008                cx,
 9009            )
 9010        })
 9011        .await?;
 9012    }
 9013    activate_any_workspace_window(&mut cx).context("could not open zed")
 9014}
 9015
 9016fn activate_any_workspace_window(cx: &mut AsyncApp) -> Option<WindowHandle<MultiWorkspace>> {
 9017    cx.update(|cx| {
 9018        if let Some(workspace_window) = cx
 9019            .active_window()
 9020            .and_then(|window| window.downcast::<MultiWorkspace>())
 9021        {
 9022            return Some(workspace_window);
 9023        }
 9024
 9025        for window in cx.windows() {
 9026            if let Some(workspace_window) = window.downcast::<MultiWorkspace>() {
 9027                workspace_window
 9028                    .update(cx, |_, window, _| window.activate_window())
 9029                    .ok();
 9030                return Some(workspace_window);
 9031            }
 9032        }
 9033        None
 9034    })
 9035}
 9036
 9037pub fn local_workspace_windows(cx: &App) -> Vec<WindowHandle<MultiWorkspace>> {
 9038    workspace_windows_for_location(&SerializedWorkspaceLocation::Local, cx)
 9039}
 9040
 9041pub fn workspace_windows_for_location(
 9042    serialized_location: &SerializedWorkspaceLocation,
 9043    cx: &App,
 9044) -> Vec<WindowHandle<MultiWorkspace>> {
 9045    cx.windows()
 9046        .into_iter()
 9047        .filter_map(|window| window.downcast::<MultiWorkspace>())
 9048        .filter(|multi_workspace| {
 9049            let same_host = |left: &RemoteConnectionOptions, right: &RemoteConnectionOptions| match (left, right) {
 9050                (RemoteConnectionOptions::Ssh(a), RemoteConnectionOptions::Ssh(b)) => {
 9051                    (&a.host, &a.username, &a.port) == (&b.host, &b.username, &b.port)
 9052                }
 9053                (RemoteConnectionOptions::Wsl(a), RemoteConnectionOptions::Wsl(b)) => {
 9054                    // The WSL username is not consistently populated in the workspace location, so ignore it for now.
 9055                    a.distro_name == b.distro_name
 9056                }
 9057                (RemoteConnectionOptions::Docker(a), RemoteConnectionOptions::Docker(b)) => {
 9058                    a.container_id == b.container_id
 9059                }
 9060                #[cfg(any(test, feature = "test-support"))]
 9061                (RemoteConnectionOptions::Mock(a), RemoteConnectionOptions::Mock(b)) => {
 9062                    a.id == b.id
 9063                }
 9064                _ => false,
 9065            };
 9066
 9067            multi_workspace.read(cx).is_ok_and(|multi_workspace| {
 9068                multi_workspace.workspaces().iter().any(|workspace| {
 9069                    match workspace.read(cx).workspace_location(cx) {
 9070                        WorkspaceLocation::Location(location, _) => {
 9071                            match (&location, serialized_location) {
 9072                                (
 9073                                    SerializedWorkspaceLocation::Local,
 9074                                    SerializedWorkspaceLocation::Local,
 9075                                ) => true,
 9076                                (
 9077                                    SerializedWorkspaceLocation::Remote(a),
 9078                                    SerializedWorkspaceLocation::Remote(b),
 9079                                ) => same_host(a, b),
 9080                                _ => false,
 9081                            }
 9082                        }
 9083                        _ => false,
 9084                    }
 9085                })
 9086            })
 9087        })
 9088        .collect()
 9089}
 9090
 9091pub async fn find_existing_workspace(
 9092    abs_paths: &[PathBuf],
 9093    open_options: &OpenOptions,
 9094    location: &SerializedWorkspaceLocation,
 9095    cx: &mut AsyncApp,
 9096) -> (
 9097    Option<(WindowHandle<MultiWorkspace>, Entity<Workspace>)>,
 9098    OpenVisible,
 9099) {
 9100    let mut existing: Option<(WindowHandle<MultiWorkspace>, Entity<Workspace>)> = None;
 9101    let mut open_visible = OpenVisible::All;
 9102    let mut best_match = None;
 9103
 9104    if open_options.open_new_workspace != Some(true) {
 9105        cx.update(|cx| {
 9106            for window in workspace_windows_for_location(location, cx) {
 9107                if let Ok(multi_workspace) = window.read(cx) {
 9108                    for workspace in multi_workspace.workspaces() {
 9109                        let project = workspace.read(cx).project.read(cx);
 9110                        let m = project.visibility_for_paths(
 9111                            abs_paths,
 9112                            open_options.open_new_workspace == None,
 9113                            cx,
 9114                        );
 9115                        if m > best_match {
 9116                            existing = Some((window, workspace.clone()));
 9117                            best_match = m;
 9118                        } else if best_match.is_none()
 9119                            && open_options.open_new_workspace == Some(false)
 9120                        {
 9121                            existing = Some((window, workspace.clone()))
 9122                        }
 9123                    }
 9124                }
 9125            }
 9126        });
 9127
 9128        let all_paths_are_files = existing
 9129            .as_ref()
 9130            .and_then(|(_, target_workspace)| {
 9131                cx.update(|cx| {
 9132                    let workspace = target_workspace.read(cx);
 9133                    let project = workspace.project.read(cx);
 9134                    let path_style = workspace.path_style(cx);
 9135                    Some(!abs_paths.iter().any(|path| {
 9136                        let path = util::paths::SanitizedPath::new(path);
 9137                        project.worktrees(cx).any(|worktree| {
 9138                            let worktree = worktree.read(cx);
 9139                            let abs_path = worktree.abs_path();
 9140                            path_style
 9141                                .strip_prefix(path.as_ref(), abs_path.as_ref())
 9142                                .and_then(|rel| worktree.entry_for_path(&rel))
 9143                                .is_some_and(|e| e.is_dir())
 9144                        })
 9145                    }))
 9146                })
 9147            })
 9148            .unwrap_or(false);
 9149
 9150        if open_options.open_new_workspace.is_none()
 9151            && existing.is_some()
 9152            && open_options.wait
 9153            && all_paths_are_files
 9154        {
 9155            cx.update(|cx| {
 9156                let windows = workspace_windows_for_location(location, cx);
 9157                let window = cx
 9158                    .active_window()
 9159                    .and_then(|window| window.downcast::<MultiWorkspace>())
 9160                    .filter(|window| windows.contains(window))
 9161                    .or_else(|| windows.into_iter().next());
 9162                if let Some(window) = window {
 9163                    if let Ok(multi_workspace) = window.read(cx) {
 9164                        let active_workspace = multi_workspace.workspace().clone();
 9165                        existing = Some((window, active_workspace));
 9166                        open_visible = OpenVisible::None;
 9167                    }
 9168                }
 9169            });
 9170        }
 9171    }
 9172    (existing, open_visible)
 9173}
 9174
 9175#[derive(Default, Clone)]
 9176pub struct OpenOptions {
 9177    pub visible: Option<OpenVisible>,
 9178    pub focus: Option<bool>,
 9179    pub open_new_workspace: Option<bool>,
 9180    pub wait: bool,
 9181    pub requesting_window: Option<WindowHandle<MultiWorkspace>>,
 9182    pub open_mode: OpenMode,
 9183    pub env: Option<HashMap<String, String>>,
 9184}
 9185
 9186/// The result of opening a workspace via [`open_paths`], [`Workspace::new_local`],
 9187/// or [`Workspace::open_workspace_for_paths`].
 9188pub struct OpenResult {
 9189    pub window: WindowHandle<MultiWorkspace>,
 9190    pub workspace: Entity<Workspace>,
 9191    pub opened_items: Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 9192}
 9193
 9194/// Opens a workspace by its database ID, used for restoring empty workspaces with unsaved content.
 9195pub fn open_workspace_by_id(
 9196    workspace_id: WorkspaceId,
 9197    app_state: Arc<AppState>,
 9198    requesting_window: Option<WindowHandle<MultiWorkspace>>,
 9199    cx: &mut App,
 9200) -> Task<anyhow::Result<WindowHandle<MultiWorkspace>>> {
 9201    let project_handle = Project::local(
 9202        app_state.client.clone(),
 9203        app_state.node_runtime.clone(),
 9204        app_state.user_store.clone(),
 9205        app_state.languages.clone(),
 9206        app_state.fs.clone(),
 9207        None,
 9208        project::LocalProjectFlags {
 9209            init_worktree_trust: true,
 9210            ..project::LocalProjectFlags::default()
 9211        },
 9212        cx,
 9213    );
 9214
 9215    let db = WorkspaceDb::global(cx);
 9216    let kvp = db::kvp::KeyValueStore::global(cx);
 9217    cx.spawn(async move |cx| {
 9218        let serialized_workspace = db
 9219            .workspace_for_id(workspace_id)
 9220            .with_context(|| format!("Workspace {workspace_id:?} not found"))?;
 9221
 9222        let centered_layout = serialized_workspace.centered_layout;
 9223
 9224        let (window, workspace) = if let Some(window) = requesting_window {
 9225            let workspace = window.update(cx, |multi_workspace, window, cx| {
 9226                let workspace = cx.new(|cx| {
 9227                    let mut workspace = Workspace::new(
 9228                        Some(workspace_id),
 9229                        project_handle.clone(),
 9230                        app_state.clone(),
 9231                        window,
 9232                        cx,
 9233                    );
 9234                    workspace.centered_layout = centered_layout;
 9235                    workspace
 9236                });
 9237                multi_workspace.add(workspace.clone(), &*window, cx);
 9238                workspace
 9239            })?;
 9240            (window, workspace)
 9241        } else {
 9242            let window_bounds_override = window_bounds_env_override();
 9243
 9244            let (window_bounds, display) = if let Some(bounds) = window_bounds_override {
 9245                (Some(WindowBounds::Windowed(bounds)), None)
 9246            } else if let Some(display) = serialized_workspace.display
 9247                && let Some(bounds) = serialized_workspace.window_bounds.as_ref()
 9248            {
 9249                (Some(bounds.0), Some(display))
 9250            } else if let Some((display, bounds)) = persistence::read_default_window_bounds(&kvp) {
 9251                (Some(bounds), Some(display))
 9252            } else {
 9253                (None, None)
 9254            };
 9255
 9256            let options = cx.update(|cx| {
 9257                let mut options = (app_state.build_window_options)(display, cx);
 9258                options.window_bounds = window_bounds;
 9259                options
 9260            });
 9261
 9262            let window = cx.open_window(options, {
 9263                let app_state = app_state.clone();
 9264                let project_handle = project_handle.clone();
 9265                move |window, cx| {
 9266                    let workspace = cx.new(|cx| {
 9267                        let mut workspace = Workspace::new(
 9268                            Some(workspace_id),
 9269                            project_handle,
 9270                            app_state,
 9271                            window,
 9272                            cx,
 9273                        );
 9274                        workspace.centered_layout = centered_layout;
 9275                        workspace
 9276                    });
 9277                    cx.new(|cx| MultiWorkspace::new(workspace, window, cx))
 9278                }
 9279            })?;
 9280
 9281            let workspace = window.update(cx, |multi_workspace: &mut MultiWorkspace, _, _cx| {
 9282                multi_workspace.workspace().clone()
 9283            })?;
 9284
 9285            (window, workspace)
 9286        };
 9287
 9288        notify_if_database_failed(window, cx);
 9289
 9290        // Restore items from the serialized workspace
 9291        window
 9292            .update(cx, |_, window, cx| {
 9293                workspace.update(cx, |_workspace, cx| {
 9294                    open_items(Some(serialized_workspace), vec![], window, cx)
 9295                })
 9296            })?
 9297            .await?;
 9298
 9299        window.update(cx, |_, window, cx| {
 9300            workspace.update(cx, |workspace, cx| {
 9301                workspace.serialize_workspace(window, cx);
 9302            });
 9303        })?;
 9304
 9305        Ok(window)
 9306    })
 9307}
 9308
 9309#[allow(clippy::type_complexity)]
 9310pub fn open_paths(
 9311    abs_paths: &[PathBuf],
 9312    app_state: Arc<AppState>,
 9313    open_options: OpenOptions,
 9314    cx: &mut App,
 9315) -> Task<anyhow::Result<OpenResult>> {
 9316    let abs_paths = abs_paths.to_vec();
 9317    #[cfg(target_os = "windows")]
 9318    let wsl_path = abs_paths
 9319        .iter()
 9320        .find_map(|p| util::paths::WslPath::from_path(p));
 9321
 9322    cx.spawn(async move |cx| {
 9323        let (mut existing, mut open_visible) = find_existing_workspace(
 9324            &abs_paths,
 9325            &open_options,
 9326            &SerializedWorkspaceLocation::Local,
 9327            cx,
 9328        )
 9329        .await;
 9330
 9331        // Fallback: if no workspace contains the paths and all paths are files,
 9332        // prefer an existing local workspace window (active window first).
 9333        if open_options.open_new_workspace.is_none() && existing.is_none() {
 9334            let all_paths = abs_paths.iter().map(|path| app_state.fs.metadata(path));
 9335            let all_metadatas = futures::future::join_all(all_paths)
 9336                .await
 9337                .into_iter()
 9338                .filter_map(|result| result.ok().flatten())
 9339                .collect::<Vec<_>>();
 9340
 9341            if all_metadatas.iter().all(|file| !file.is_dir) {
 9342                cx.update(|cx| {
 9343                    let windows = workspace_windows_for_location(
 9344                        &SerializedWorkspaceLocation::Local,
 9345                        cx,
 9346                    );
 9347                    let window = cx
 9348                        .active_window()
 9349                        .and_then(|window| window.downcast::<MultiWorkspace>())
 9350                        .filter(|window| windows.contains(window))
 9351                        .or_else(|| windows.into_iter().next());
 9352                    if let Some(window) = window {
 9353                        if let Ok(multi_workspace) = window.read(cx) {
 9354                            let active_workspace = multi_workspace.workspace().clone();
 9355                            existing = Some((window, active_workspace));
 9356                            open_visible = OpenVisible::None;
 9357                        }
 9358                    }
 9359                });
 9360            }
 9361        }
 9362
 9363        let result = if let Some((existing, target_workspace)) = existing {
 9364            let open_task = existing
 9365                .update(cx, |multi_workspace, window, cx| {
 9366                    window.activate_window();
 9367                    multi_workspace.activate(target_workspace.clone(), window, cx);
 9368                    target_workspace.update(cx, |workspace, cx| {
 9369                        workspace.open_paths(
 9370                            abs_paths,
 9371                            OpenOptions {
 9372                                visible: Some(open_visible),
 9373                                ..Default::default()
 9374                            },
 9375                            None,
 9376                            window,
 9377                            cx,
 9378                        )
 9379                    })
 9380                })?
 9381                .await;
 9382
 9383            _ = existing.update(cx, |multi_workspace, _, cx| {
 9384                let workspace = multi_workspace.workspace().clone();
 9385                workspace.update(cx, |workspace, cx| {
 9386                    for item in open_task.iter().flatten() {
 9387                        if let Err(e) = item {
 9388                            workspace.show_error(&e, cx);
 9389                        }
 9390                    }
 9391                });
 9392            });
 9393
 9394            Ok(OpenResult { window: existing, workspace: target_workspace, opened_items: open_task })
 9395        } else {
 9396            let result = cx
 9397                .update(move |cx| {
 9398                    Workspace::new_local(
 9399                        abs_paths,
 9400                        app_state.clone(),
 9401                        open_options.requesting_window,
 9402                        open_options.env,
 9403                        None,
 9404                        open_options.open_mode,
 9405                        cx,
 9406                    )
 9407                })
 9408                .await;
 9409
 9410            if let Ok(ref result) = result {
 9411                result.window
 9412                    .update(cx, |_, window, _cx| {
 9413                        window.activate_window();
 9414                    })
 9415                    .log_err();
 9416            }
 9417
 9418            result
 9419        };
 9420
 9421        #[cfg(target_os = "windows")]
 9422        if let Some(util::paths::WslPath{distro, path}) = wsl_path
 9423            && let Ok(ref result) = result
 9424        {
 9425            result.window
 9426                .update(cx, move |multi_workspace, _window, cx| {
 9427                    struct OpenInWsl;
 9428                    let workspace = multi_workspace.workspace().clone();
 9429                    workspace.update(cx, |workspace, cx| {
 9430                        workspace.show_notification(NotificationId::unique::<OpenInWsl>(), cx, move |cx| {
 9431                            let display_path = util::markdown::MarkdownInlineCode(&path.to_string_lossy());
 9432                            let msg = format!("{display_path} is inside a WSL filesystem, some features may not work unless you open it with WSL remote");
 9433                            cx.new(move |cx| {
 9434                                MessageNotification::new(msg, cx)
 9435                                    .primary_message("Open in WSL")
 9436                                    .primary_icon(IconName::FolderOpen)
 9437                                    .primary_on_click(move |window, cx| {
 9438                                        window.dispatch_action(Box::new(remote::OpenWslPath {
 9439                                                distro: remote::WslConnectionOptions {
 9440                                                        distro_name: distro.clone(),
 9441                                                    user: None,
 9442                                                },
 9443                                                paths: vec![path.clone().into()],
 9444                                            }), cx)
 9445                                    })
 9446                            })
 9447                        });
 9448                    });
 9449                })
 9450                .unwrap();
 9451        };
 9452        result
 9453    })
 9454}
 9455
 9456pub fn open_new(
 9457    open_options: OpenOptions,
 9458    app_state: Arc<AppState>,
 9459    cx: &mut App,
 9460    init: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + 'static + Send,
 9461) -> Task<anyhow::Result<()>> {
 9462    let addition = open_options.open_mode;
 9463    let task = Workspace::new_local(
 9464        Vec::new(),
 9465        app_state,
 9466        open_options.requesting_window,
 9467        open_options.env,
 9468        Some(Box::new(init)),
 9469        addition,
 9470        cx,
 9471    );
 9472    cx.spawn(async move |cx| {
 9473        let OpenResult { window, .. } = task.await?;
 9474        window
 9475            .update(cx, |_, window, _cx| {
 9476                window.activate_window();
 9477            })
 9478            .ok();
 9479        Ok(())
 9480    })
 9481}
 9482
 9483pub fn create_and_open_local_file(
 9484    path: &'static Path,
 9485    window: &mut Window,
 9486    cx: &mut Context<Workspace>,
 9487    default_content: impl 'static + Send + FnOnce() -> Rope,
 9488) -> Task<Result<Box<dyn ItemHandle>>> {
 9489    cx.spawn_in(window, async move |workspace, cx| {
 9490        let fs = workspace.read_with(cx, |workspace, _| workspace.app_state().fs.clone())?;
 9491        if !fs.is_file(path).await {
 9492            fs.create_file(path, Default::default()).await?;
 9493            fs.save(path, &default_content(), Default::default())
 9494                .await?;
 9495        }
 9496
 9497        workspace
 9498            .update_in(cx, |workspace, window, cx| {
 9499                workspace.with_local_or_wsl_workspace(window, cx, |workspace, window, cx| {
 9500                    let path = workspace
 9501                        .project
 9502                        .read_with(cx, |project, cx| project.try_windows_path_to_wsl(path, cx));
 9503                    cx.spawn_in(window, async move |workspace, cx| {
 9504                        let path = path.await?;
 9505
 9506                        let path = fs.canonicalize(&path).await.unwrap_or(path);
 9507
 9508                        let mut items = workspace
 9509                            .update_in(cx, |workspace, window, cx| {
 9510                                workspace.open_paths(
 9511                                    vec![path.to_path_buf()],
 9512                                    OpenOptions {
 9513                                        visible: Some(OpenVisible::None),
 9514                                        ..Default::default()
 9515                                    },
 9516                                    None,
 9517                                    window,
 9518                                    cx,
 9519                                )
 9520                            })?
 9521                            .await;
 9522                        let item = items.pop().flatten();
 9523                        item.with_context(|| format!("path {path:?} is not a file"))?
 9524                    })
 9525                })
 9526            })?
 9527            .await?
 9528            .await
 9529    })
 9530}
 9531
 9532pub fn open_remote_project_with_new_connection(
 9533    window: WindowHandle<MultiWorkspace>,
 9534    remote_connection: Arc<dyn RemoteConnection>,
 9535    cancel_rx: oneshot::Receiver<()>,
 9536    delegate: Arc<dyn RemoteClientDelegate>,
 9537    app_state: Arc<AppState>,
 9538    paths: Vec<PathBuf>,
 9539    cx: &mut App,
 9540) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 9541    cx.spawn(async move |cx| {
 9542        let (workspace_id, serialized_workspace) =
 9543            deserialize_remote_project(remote_connection.connection_options(), paths.clone(), cx)
 9544                .await?;
 9545
 9546        let session = match cx
 9547            .update(|cx| {
 9548                remote::RemoteClient::new(
 9549                    ConnectionIdentifier::Workspace(workspace_id.0),
 9550                    remote_connection,
 9551                    cancel_rx,
 9552                    delegate,
 9553                    cx,
 9554                )
 9555            })
 9556            .await?
 9557        {
 9558            Some(result) => result,
 9559            None => return Ok(Vec::new()),
 9560        };
 9561
 9562        let project = cx.update(|cx| {
 9563            project::Project::remote(
 9564                session,
 9565                app_state.client.clone(),
 9566                app_state.node_runtime.clone(),
 9567                app_state.user_store.clone(),
 9568                app_state.languages.clone(),
 9569                app_state.fs.clone(),
 9570                true,
 9571                cx,
 9572            )
 9573        });
 9574
 9575        open_remote_project_inner(
 9576            project,
 9577            paths,
 9578            workspace_id,
 9579            serialized_workspace,
 9580            app_state,
 9581            window,
 9582            cx,
 9583        )
 9584        .await
 9585    })
 9586}
 9587
 9588pub fn open_remote_project_with_existing_connection(
 9589    connection_options: RemoteConnectionOptions,
 9590    project: Entity<Project>,
 9591    paths: Vec<PathBuf>,
 9592    app_state: Arc<AppState>,
 9593    window: WindowHandle<MultiWorkspace>,
 9594    cx: &mut AsyncApp,
 9595) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 9596    cx.spawn(async move |cx| {
 9597        let (workspace_id, serialized_workspace) =
 9598            deserialize_remote_project(connection_options.clone(), paths.clone(), cx).await?;
 9599
 9600        open_remote_project_inner(
 9601            project,
 9602            paths,
 9603            workspace_id,
 9604            serialized_workspace,
 9605            app_state,
 9606            window,
 9607            cx,
 9608        )
 9609        .await
 9610    })
 9611}
 9612
 9613async fn open_remote_project_inner(
 9614    project: Entity<Project>,
 9615    paths: Vec<PathBuf>,
 9616    workspace_id: WorkspaceId,
 9617    serialized_workspace: Option<SerializedWorkspace>,
 9618    app_state: Arc<AppState>,
 9619    window: WindowHandle<MultiWorkspace>,
 9620    cx: &mut AsyncApp,
 9621) -> Result<Vec<Option<Box<dyn ItemHandle>>>> {
 9622    let db = cx.update(|cx| WorkspaceDb::global(cx));
 9623    let toolchains = db.toolchains(workspace_id).await?;
 9624    for (toolchain, worktree_path, path) in toolchains {
 9625        project
 9626            .update(cx, |this, cx| {
 9627                let Some(worktree_id) =
 9628                    this.find_worktree(&worktree_path, cx)
 9629                        .and_then(|(worktree, rel_path)| {
 9630                            if rel_path.is_empty() {
 9631                                Some(worktree.read(cx).id())
 9632                            } else {
 9633                                None
 9634                            }
 9635                        })
 9636                else {
 9637                    return Task::ready(None);
 9638                };
 9639
 9640                this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 9641            })
 9642            .await;
 9643    }
 9644    let mut project_paths_to_open = vec![];
 9645    let mut project_path_errors = vec![];
 9646
 9647    for path in paths {
 9648        let result = cx
 9649            .update(|cx| Workspace::project_path_for_path(project.clone(), &path, true, cx))
 9650            .await;
 9651        match result {
 9652            Ok((_, project_path)) => {
 9653                project_paths_to_open.push((path.clone(), Some(project_path)));
 9654            }
 9655            Err(error) => {
 9656                project_path_errors.push(error);
 9657            }
 9658        };
 9659    }
 9660
 9661    if project_paths_to_open.is_empty() {
 9662        return Err(project_path_errors.pop().context("no paths given")?);
 9663    }
 9664
 9665    let workspace = window.update(cx, |multi_workspace, window, cx| {
 9666        telemetry::event!("SSH Project Opened");
 9667
 9668        let new_workspace = cx.new(|cx| {
 9669            let mut workspace =
 9670                Workspace::new(Some(workspace_id), project, app_state.clone(), window, cx);
 9671            workspace.update_history(cx);
 9672
 9673            if let Some(ref serialized) = serialized_workspace {
 9674                workspace.centered_layout = serialized.centered_layout;
 9675            }
 9676
 9677            workspace
 9678        });
 9679
 9680        multi_workspace.activate(new_workspace.clone(), window, cx);
 9681        new_workspace
 9682    })?;
 9683
 9684    let items = window
 9685        .update(cx, |_, window, cx| {
 9686            window.activate_window();
 9687            workspace.update(cx, |_workspace, cx| {
 9688                open_items(serialized_workspace, project_paths_to_open, window, cx)
 9689            })
 9690        })?
 9691        .await?;
 9692
 9693    workspace.update(cx, |workspace, cx| {
 9694        for error in project_path_errors {
 9695            if error.error_code() == proto::ErrorCode::DevServerProjectPathDoesNotExist {
 9696                if let Some(path) = error.error_tag("path") {
 9697                    workspace.show_error(&anyhow!("'{path}' does not exist"), cx)
 9698                }
 9699            } else {
 9700                workspace.show_error(&error, cx)
 9701            }
 9702        }
 9703    });
 9704
 9705    Ok(items.into_iter().map(|item| item?.ok()).collect())
 9706}
 9707
 9708fn deserialize_remote_project(
 9709    connection_options: RemoteConnectionOptions,
 9710    paths: Vec<PathBuf>,
 9711    cx: &AsyncApp,
 9712) -> Task<Result<(WorkspaceId, Option<SerializedWorkspace>)>> {
 9713    let db = cx.update(|cx| WorkspaceDb::global(cx));
 9714    cx.background_spawn(async move {
 9715        let remote_connection_id = db
 9716            .get_or_create_remote_connection(connection_options)
 9717            .await?;
 9718
 9719        let serialized_workspace = db.remote_workspace_for_roots(&paths, remote_connection_id);
 9720
 9721        let workspace_id = if let Some(workspace_id) =
 9722            serialized_workspace.as_ref().map(|workspace| workspace.id)
 9723        {
 9724            workspace_id
 9725        } else {
 9726            db.next_id().await?
 9727        };
 9728
 9729        Ok((workspace_id, serialized_workspace))
 9730    })
 9731}
 9732
 9733pub fn join_in_room_project(
 9734    project_id: u64,
 9735    follow_user_id: u64,
 9736    app_state: Arc<AppState>,
 9737    cx: &mut App,
 9738) -> Task<Result<()>> {
 9739    let windows = cx.windows();
 9740    cx.spawn(async move |cx| {
 9741        let existing_window_and_workspace: Option<(
 9742            WindowHandle<MultiWorkspace>,
 9743            Entity<Workspace>,
 9744        )> = windows.into_iter().find_map(|window_handle| {
 9745            window_handle
 9746                .downcast::<MultiWorkspace>()
 9747                .and_then(|window_handle| {
 9748                    window_handle
 9749                        .update(cx, |multi_workspace, _window, cx| {
 9750                            for workspace in multi_workspace.workspaces() {
 9751                                if workspace.read(cx).project().read(cx).remote_id()
 9752                                    == Some(project_id)
 9753                                {
 9754                                    return Some((window_handle, workspace.clone()));
 9755                                }
 9756                            }
 9757                            None
 9758                        })
 9759                        .unwrap_or(None)
 9760                })
 9761        });
 9762
 9763        let multi_workspace_window = if let Some((existing_window, target_workspace)) =
 9764            existing_window_and_workspace
 9765        {
 9766            existing_window
 9767                .update(cx, |multi_workspace, window, cx| {
 9768                    multi_workspace.activate(target_workspace, window, cx);
 9769                })
 9770                .ok();
 9771            existing_window
 9772        } else {
 9773            let active_call = cx.update(|cx| GlobalAnyActiveCall::global(cx).clone());
 9774            let project = cx
 9775                .update(|cx| {
 9776                    active_call.0.join_project(
 9777                        project_id,
 9778                        app_state.languages.clone(),
 9779                        app_state.fs.clone(),
 9780                        cx,
 9781                    )
 9782                })
 9783                .await?;
 9784
 9785            let window_bounds_override = window_bounds_env_override();
 9786            cx.update(|cx| {
 9787                let mut options = (app_state.build_window_options)(None, cx);
 9788                options.window_bounds = window_bounds_override.map(WindowBounds::Windowed);
 9789                cx.open_window(options, |window, cx| {
 9790                    let workspace = cx.new(|cx| {
 9791                        Workspace::new(Default::default(), project, app_state.clone(), window, cx)
 9792                    });
 9793                    cx.new(|cx| MultiWorkspace::new(workspace, window, cx))
 9794                })
 9795            })?
 9796        };
 9797
 9798        multi_workspace_window.update(cx, |multi_workspace, window, cx| {
 9799            cx.activate(true);
 9800            window.activate_window();
 9801
 9802            // We set the active workspace above, so this is the correct workspace.
 9803            let workspace = multi_workspace.workspace().clone();
 9804            workspace.update(cx, |workspace, cx| {
 9805                let follow_peer_id = GlobalAnyActiveCall::try_global(cx)
 9806                    .and_then(|call| call.0.peer_id_for_user_in_room(follow_user_id, cx))
 9807                    .or_else(|| {
 9808                        // If we couldn't follow the given user, follow the host instead.
 9809                        let collaborator = workspace
 9810                            .project()
 9811                            .read(cx)
 9812                            .collaborators()
 9813                            .values()
 9814                            .find(|collaborator| collaborator.is_host)?;
 9815                        Some(collaborator.peer_id)
 9816                    });
 9817
 9818                if let Some(follow_peer_id) = follow_peer_id {
 9819                    workspace.follow(follow_peer_id, window, cx);
 9820                }
 9821            });
 9822        })?;
 9823
 9824        anyhow::Ok(())
 9825    })
 9826}
 9827
 9828pub fn reload(cx: &mut App) {
 9829    let should_confirm = WorkspaceSettings::get_global(cx).confirm_quit;
 9830    let mut workspace_windows = cx
 9831        .windows()
 9832        .into_iter()
 9833        .filter_map(|window| window.downcast::<MultiWorkspace>())
 9834        .collect::<Vec<_>>();
 9835
 9836    // If multiple windows have unsaved changes, and need a save prompt,
 9837    // prompt in the active window before switching to a different window.
 9838    workspace_windows.sort_by_key(|window| window.is_active(cx) == Some(false));
 9839
 9840    let mut prompt = None;
 9841    if let (true, Some(window)) = (should_confirm, workspace_windows.first()) {
 9842        prompt = window
 9843            .update(cx, |_, window, cx| {
 9844                window.prompt(
 9845                    PromptLevel::Info,
 9846                    "Are you sure you want to restart?",
 9847                    None,
 9848                    &["Restart", "Cancel"],
 9849                    cx,
 9850                )
 9851            })
 9852            .ok();
 9853    }
 9854
 9855    cx.spawn(async move |cx| {
 9856        if let Some(prompt) = prompt {
 9857            let answer = prompt.await?;
 9858            if answer != 0 {
 9859                return anyhow::Ok(());
 9860            }
 9861        }
 9862
 9863        // If the user cancels any save prompt, then keep the app open.
 9864        for window in workspace_windows {
 9865            if let Ok(should_close) = window.update(cx, |multi_workspace, window, cx| {
 9866                let workspace = multi_workspace.workspace().clone();
 9867                workspace.update(cx, |workspace, cx| {
 9868                    workspace.prepare_to_close(CloseIntent::Quit, window, cx)
 9869                })
 9870            }) && !should_close.await?
 9871            {
 9872                return anyhow::Ok(());
 9873            }
 9874        }
 9875        cx.update(|cx| cx.restart());
 9876        anyhow::Ok(())
 9877    })
 9878    .detach_and_log_err(cx);
 9879}
 9880
 9881fn parse_pixel_position_env_var(value: &str) -> Option<Point<Pixels>> {
 9882    let mut parts = value.split(',');
 9883    let x: usize = parts.next()?.parse().ok()?;
 9884    let y: usize = parts.next()?.parse().ok()?;
 9885    Some(point(px(x as f32), px(y as f32)))
 9886}
 9887
 9888fn parse_pixel_size_env_var(value: &str) -> Option<Size<Pixels>> {
 9889    let mut parts = value.split(',');
 9890    let width: usize = parts.next()?.parse().ok()?;
 9891    let height: usize = parts.next()?.parse().ok()?;
 9892    Some(size(px(width as f32), px(height as f32)))
 9893}
 9894
 9895/// Add client-side decorations (rounded corners, shadows, resize handling) when
 9896/// appropriate.
 9897///
 9898/// The `border_radius_tiling` parameter allows overriding which corners get
 9899/// rounded, independently of the actual window tiling state. This is used
 9900/// specifically for the workspace switcher sidebar: when the sidebar is open,
 9901/// we want square corners on the left (so the sidebar appears flush with the
 9902/// window edge) but we still need the shadow padding for proper visual
 9903/// appearance. Unlike actual window tiling, this only affects border radius -
 9904/// not padding or shadows.
 9905pub fn client_side_decorations(
 9906    element: impl IntoElement,
 9907    window: &mut Window,
 9908    cx: &mut App,
 9909    border_radius_tiling: Tiling,
 9910) -> Stateful<Div> {
 9911    const BORDER_SIZE: Pixels = px(1.0);
 9912    let decorations = window.window_decorations();
 9913    let tiling = match decorations {
 9914        Decorations::Server => Tiling::default(),
 9915        Decorations::Client { tiling } => tiling,
 9916    };
 9917
 9918    match decorations {
 9919        Decorations::Client { .. } => window.set_client_inset(theme::CLIENT_SIDE_DECORATION_SHADOW),
 9920        Decorations::Server => window.set_client_inset(px(0.0)),
 9921    }
 9922
 9923    struct GlobalResizeEdge(ResizeEdge);
 9924    impl Global for GlobalResizeEdge {}
 9925
 9926    div()
 9927        .id("window-backdrop")
 9928        .bg(transparent_black())
 9929        .map(|div| match decorations {
 9930            Decorations::Server => div,
 9931            Decorations::Client { .. } => div
 9932                .when(
 9933                    !(tiling.top
 9934                        || tiling.right
 9935                        || border_radius_tiling.top
 9936                        || border_radius_tiling.right),
 9937                    |div| div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING),
 9938                )
 9939                .when(
 9940                    !(tiling.top
 9941                        || tiling.left
 9942                        || border_radius_tiling.top
 9943                        || border_radius_tiling.left),
 9944                    |div| div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING),
 9945                )
 9946                .when(
 9947                    !(tiling.bottom
 9948                        || tiling.right
 9949                        || border_radius_tiling.bottom
 9950                        || border_radius_tiling.right),
 9951                    |div| div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING),
 9952                )
 9953                .when(
 9954                    !(tiling.bottom
 9955                        || tiling.left
 9956                        || border_radius_tiling.bottom
 9957                        || border_radius_tiling.left),
 9958                    |div| div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING),
 9959                )
 9960                .when(!tiling.top, |div| {
 9961                    div.pt(theme::CLIENT_SIDE_DECORATION_SHADOW)
 9962                })
 9963                .when(!tiling.bottom, |div| {
 9964                    div.pb(theme::CLIENT_SIDE_DECORATION_SHADOW)
 9965                })
 9966                .when(!tiling.left, |div| {
 9967                    div.pl(theme::CLIENT_SIDE_DECORATION_SHADOW)
 9968                })
 9969                .when(!tiling.right, |div| {
 9970                    div.pr(theme::CLIENT_SIDE_DECORATION_SHADOW)
 9971                })
 9972                .on_mouse_move(move |e, window, cx| {
 9973                    let size = window.window_bounds().get_bounds().size;
 9974                    let pos = e.position;
 9975
 9976                    let new_edge =
 9977                        resize_edge(pos, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling);
 9978
 9979                    let edge = cx.try_global::<GlobalResizeEdge>();
 9980                    if new_edge != edge.map(|edge| edge.0) {
 9981                        window
 9982                            .window_handle()
 9983                            .update(cx, |workspace, _, cx| {
 9984                                cx.notify(workspace.entity_id());
 9985                            })
 9986                            .ok();
 9987                    }
 9988                })
 9989                .on_mouse_down(MouseButton::Left, move |e, window, _| {
 9990                    let size = window.window_bounds().get_bounds().size;
 9991                    let pos = e.position;
 9992
 9993                    let edge = match resize_edge(
 9994                        pos,
 9995                        theme::CLIENT_SIDE_DECORATION_SHADOW,
 9996                        size,
 9997                        tiling,
 9998                    ) {
 9999                        Some(value) => value,
10000                        None => return,
10001                    };
10002
10003                    window.start_window_resize(edge);
10004                }),
10005        })
10006        .size_full()
10007        .child(
10008            div()
10009                .cursor(CursorStyle::Arrow)
10010                .map(|div| match decorations {
10011                    Decorations::Server => div,
10012                    Decorations::Client { .. } => div
10013                        .border_color(cx.theme().colors().border)
10014                        .when(
10015                            !(tiling.top
10016                                || tiling.right
10017                                || border_radius_tiling.top
10018                                || border_radius_tiling.right),
10019                            |div| div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING),
10020                        )
10021                        .when(
10022                            !(tiling.top
10023                                || tiling.left
10024                                || border_radius_tiling.top
10025                                || border_radius_tiling.left),
10026                            |div| div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING),
10027                        )
10028                        .when(
10029                            !(tiling.bottom
10030                                || tiling.right
10031                                || border_radius_tiling.bottom
10032                                || border_radius_tiling.right),
10033                            |div| div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING),
10034                        )
10035                        .when(
10036                            !(tiling.bottom
10037                                || tiling.left
10038                                || border_radius_tiling.bottom
10039                                || border_radius_tiling.left),
10040                            |div| div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING),
10041                        )
10042                        .when(!tiling.top, |div| div.border_t(BORDER_SIZE))
10043                        .when(!tiling.bottom, |div| div.border_b(BORDER_SIZE))
10044                        .when(!tiling.left, |div| div.border_l(BORDER_SIZE))
10045                        .when(!tiling.right, |div| div.border_r(BORDER_SIZE))
10046                        .when(!tiling.is_tiled(), |div| {
10047                            div.shadow(vec![gpui::BoxShadow {
10048                                color: Hsla {
10049                                    h: 0.,
10050                                    s: 0.,
10051                                    l: 0.,
10052                                    a: 0.4,
10053                                },
10054                                blur_radius: theme::CLIENT_SIDE_DECORATION_SHADOW / 2.,
10055                                spread_radius: px(0.),
10056                                offset: point(px(0.0), px(0.0)),
10057                            }])
10058                        }),
10059                })
10060                .on_mouse_move(|_e, _, cx| {
10061                    cx.stop_propagation();
10062                })
10063                .size_full()
10064                .child(element),
10065        )
10066        .map(|div| match decorations {
10067            Decorations::Server => div,
10068            Decorations::Client { tiling, .. } => div.child(
10069                canvas(
10070                    |_bounds, window, _| {
10071                        window.insert_hitbox(
10072                            Bounds::new(
10073                                point(px(0.0), px(0.0)),
10074                                window.window_bounds().get_bounds().size,
10075                            ),
10076                            HitboxBehavior::Normal,
10077                        )
10078                    },
10079                    move |_bounds, hitbox, window, cx| {
10080                        let mouse = window.mouse_position();
10081                        let size = window.window_bounds().get_bounds().size;
10082                        let Some(edge) =
10083                            resize_edge(mouse, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling)
10084                        else {
10085                            return;
10086                        };
10087                        cx.set_global(GlobalResizeEdge(edge));
10088                        window.set_cursor_style(
10089                            match edge {
10090                                ResizeEdge::Top | ResizeEdge::Bottom => CursorStyle::ResizeUpDown,
10091                                ResizeEdge::Left | ResizeEdge::Right => {
10092                                    CursorStyle::ResizeLeftRight
10093                                }
10094                                ResizeEdge::TopLeft | ResizeEdge::BottomRight => {
10095                                    CursorStyle::ResizeUpLeftDownRight
10096                                }
10097                                ResizeEdge::TopRight | ResizeEdge::BottomLeft => {
10098                                    CursorStyle::ResizeUpRightDownLeft
10099                                }
10100                            },
10101                            &hitbox,
10102                        );
10103                    },
10104                )
10105                .size_full()
10106                .absolute(),
10107            ),
10108        })
10109}
10110
10111fn resize_edge(
10112    pos: Point<Pixels>,
10113    shadow_size: Pixels,
10114    window_size: Size<Pixels>,
10115    tiling: Tiling,
10116) -> Option<ResizeEdge> {
10117    let bounds = Bounds::new(Point::default(), window_size).inset(shadow_size * 1.5);
10118    if bounds.contains(&pos) {
10119        return None;
10120    }
10121
10122    let corner_size = size(shadow_size * 1.5, shadow_size * 1.5);
10123    let top_left_bounds = Bounds::new(Point::new(px(0.), px(0.)), corner_size);
10124    if !tiling.top && top_left_bounds.contains(&pos) {
10125        return Some(ResizeEdge::TopLeft);
10126    }
10127
10128    let top_right_bounds = Bounds::new(
10129        Point::new(window_size.width - corner_size.width, px(0.)),
10130        corner_size,
10131    );
10132    if !tiling.top && top_right_bounds.contains(&pos) {
10133        return Some(ResizeEdge::TopRight);
10134    }
10135
10136    let bottom_left_bounds = Bounds::new(
10137        Point::new(px(0.), window_size.height - corner_size.height),
10138        corner_size,
10139    );
10140    if !tiling.bottom && bottom_left_bounds.contains(&pos) {
10141        return Some(ResizeEdge::BottomLeft);
10142    }
10143
10144    let bottom_right_bounds = Bounds::new(
10145        Point::new(
10146            window_size.width - corner_size.width,
10147            window_size.height - corner_size.height,
10148        ),
10149        corner_size,
10150    );
10151    if !tiling.bottom && bottom_right_bounds.contains(&pos) {
10152        return Some(ResizeEdge::BottomRight);
10153    }
10154
10155    if !tiling.top && pos.y < shadow_size {
10156        Some(ResizeEdge::Top)
10157    } else if !tiling.bottom && pos.y > window_size.height - shadow_size {
10158        Some(ResizeEdge::Bottom)
10159    } else if !tiling.left && pos.x < shadow_size {
10160        Some(ResizeEdge::Left)
10161    } else if !tiling.right && pos.x > window_size.width - shadow_size {
10162        Some(ResizeEdge::Right)
10163    } else {
10164        None
10165    }
10166}
10167
10168fn join_pane_into_active(
10169    active_pane: &Entity<Pane>,
10170    pane: &Entity<Pane>,
10171    window: &mut Window,
10172    cx: &mut App,
10173) {
10174    if pane == active_pane {
10175    } else if pane.read(cx).items_len() == 0 {
10176        pane.update(cx, |_, cx| {
10177            cx.emit(pane::Event::Remove {
10178                focus_on_pane: None,
10179            });
10180        })
10181    } else {
10182        move_all_items(pane, active_pane, window, cx);
10183    }
10184}
10185
10186fn move_all_items(
10187    from_pane: &Entity<Pane>,
10188    to_pane: &Entity<Pane>,
10189    window: &mut Window,
10190    cx: &mut App,
10191) {
10192    let destination_is_different = from_pane != to_pane;
10193    let mut moved_items = 0;
10194    for (item_ix, item_handle) in from_pane
10195        .read(cx)
10196        .items()
10197        .enumerate()
10198        .map(|(ix, item)| (ix, item.clone()))
10199        .collect::<Vec<_>>()
10200    {
10201        let ix = item_ix - moved_items;
10202        if destination_is_different {
10203            // Close item from previous pane
10204            from_pane.update(cx, |source, cx| {
10205                source.remove_item_and_focus_on_pane(ix, false, to_pane.clone(), window, cx);
10206            });
10207            moved_items += 1;
10208        }
10209
10210        // This automatically removes duplicate items in the pane
10211        to_pane.update(cx, |destination, cx| {
10212            destination.add_item(item_handle, true, true, None, window, cx);
10213            window.focus(&destination.focus_handle(cx), cx)
10214        });
10215    }
10216}
10217
10218pub fn move_item(
10219    source: &Entity<Pane>,
10220    destination: &Entity<Pane>,
10221    item_id_to_move: EntityId,
10222    destination_index: usize,
10223    activate: bool,
10224    window: &mut Window,
10225    cx: &mut App,
10226) {
10227    let Some((item_ix, item_handle)) = source
10228        .read(cx)
10229        .items()
10230        .enumerate()
10231        .find(|(_, item_handle)| item_handle.item_id() == item_id_to_move)
10232        .map(|(ix, item)| (ix, item.clone()))
10233    else {
10234        // Tab was closed during drag
10235        return;
10236    };
10237
10238    if source != destination {
10239        // Close item from previous pane
10240        source.update(cx, |source, cx| {
10241            source.remove_item_and_focus_on_pane(item_ix, false, destination.clone(), window, cx);
10242        });
10243    }
10244
10245    // This automatically removes duplicate items in the pane
10246    destination.update(cx, |destination, cx| {
10247        destination.add_item_inner(
10248            item_handle,
10249            activate,
10250            activate,
10251            activate,
10252            Some(destination_index),
10253            window,
10254            cx,
10255        );
10256        if activate {
10257            window.focus(&destination.focus_handle(cx), cx)
10258        }
10259    });
10260}
10261
10262pub fn move_active_item(
10263    source: &Entity<Pane>,
10264    destination: &Entity<Pane>,
10265    focus_destination: bool,
10266    close_if_empty: bool,
10267    window: &mut Window,
10268    cx: &mut App,
10269) {
10270    if source == destination {
10271        return;
10272    }
10273    let Some(active_item) = source.read(cx).active_item() else {
10274        return;
10275    };
10276    source.update(cx, |source_pane, cx| {
10277        let item_id = active_item.item_id();
10278        source_pane.remove_item(item_id, false, close_if_empty, window, cx);
10279        destination.update(cx, |target_pane, cx| {
10280            target_pane.add_item(
10281                active_item,
10282                focus_destination,
10283                focus_destination,
10284                Some(target_pane.items_len()),
10285                window,
10286                cx,
10287            );
10288        });
10289    });
10290}
10291
10292pub fn clone_active_item(
10293    workspace_id: Option<WorkspaceId>,
10294    source: &Entity<Pane>,
10295    destination: &Entity<Pane>,
10296    focus_destination: bool,
10297    window: &mut Window,
10298    cx: &mut App,
10299) {
10300    if source == destination {
10301        return;
10302    }
10303    let Some(active_item) = source.read(cx).active_item() else {
10304        return;
10305    };
10306    if !active_item.can_split(cx) {
10307        return;
10308    }
10309    let destination = destination.downgrade();
10310    let task = active_item.clone_on_split(workspace_id, window, cx);
10311    window
10312        .spawn(cx, async move |cx| {
10313            let Some(clone) = task.await else {
10314                return;
10315            };
10316            destination
10317                .update_in(cx, |target_pane, window, cx| {
10318                    target_pane.add_item(
10319                        clone,
10320                        focus_destination,
10321                        focus_destination,
10322                        Some(target_pane.items_len()),
10323                        window,
10324                        cx,
10325                    );
10326                })
10327                .log_err();
10328        })
10329        .detach();
10330}
10331
10332#[derive(Debug)]
10333pub struct WorkspacePosition {
10334    pub window_bounds: Option<WindowBounds>,
10335    pub display: Option<Uuid>,
10336    pub centered_layout: bool,
10337}
10338
10339pub fn remote_workspace_position_from_db(
10340    connection_options: RemoteConnectionOptions,
10341    paths_to_open: &[PathBuf],
10342    cx: &App,
10343) -> Task<Result<WorkspacePosition>> {
10344    let paths = paths_to_open.to_vec();
10345    let db = WorkspaceDb::global(cx);
10346    let kvp = db::kvp::KeyValueStore::global(cx);
10347
10348    cx.background_spawn(async move {
10349        let remote_connection_id = db
10350            .get_or_create_remote_connection(connection_options)
10351            .await
10352            .context("fetching serialized ssh project")?;
10353        let serialized_workspace = db.remote_workspace_for_roots(&paths, remote_connection_id);
10354
10355        let (window_bounds, display) = if let Some(bounds) = window_bounds_env_override() {
10356            (Some(WindowBounds::Windowed(bounds)), None)
10357        } else {
10358            let restorable_bounds = serialized_workspace
10359                .as_ref()
10360                .and_then(|workspace| {
10361                    Some((workspace.display?, workspace.window_bounds.map(|b| b.0)?))
10362                })
10363                .or_else(|| persistence::read_default_window_bounds(&kvp));
10364
10365            if let Some((serialized_display, serialized_bounds)) = restorable_bounds {
10366                (Some(serialized_bounds), Some(serialized_display))
10367            } else {
10368                (None, None)
10369            }
10370        };
10371
10372        let centered_layout = serialized_workspace
10373            .as_ref()
10374            .map(|w| w.centered_layout)
10375            .unwrap_or(false);
10376
10377        Ok(WorkspacePosition {
10378            window_bounds,
10379            display,
10380            centered_layout,
10381        })
10382    })
10383}
10384
10385pub fn with_active_or_new_workspace(
10386    cx: &mut App,
10387    f: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send + 'static,
10388) {
10389    match cx
10390        .active_window()
10391        .and_then(|w| w.downcast::<MultiWorkspace>())
10392    {
10393        Some(multi_workspace) => {
10394            cx.defer(move |cx| {
10395                multi_workspace
10396                    .update(cx, |multi_workspace, window, cx| {
10397                        let workspace = multi_workspace.workspace().clone();
10398                        workspace.update(cx, |workspace, cx| f(workspace, window, cx));
10399                    })
10400                    .log_err();
10401            });
10402        }
10403        None => {
10404            let app_state = AppState::global(cx);
10405            open_new(
10406                OpenOptions::default(),
10407                app_state,
10408                cx,
10409                move |workspace, window, cx| f(workspace, window, cx),
10410            )
10411            .detach_and_log_err(cx);
10412        }
10413    }
10414}
10415
10416/// Reads a panel's pixel size from its legacy KVP format and deletes the legacy
10417/// key. This migration path only runs once per panel per workspace.
10418fn load_legacy_panel_size(
10419    panel_key: &str,
10420    dock_position: DockPosition,
10421    workspace: &Workspace,
10422    cx: &mut App,
10423) -> Option<Pixels> {
10424    #[derive(Deserialize)]
10425    struct LegacyPanelState {
10426        #[serde(default)]
10427        width: Option<Pixels>,
10428        #[serde(default)]
10429        height: Option<Pixels>,
10430    }
10431
10432    let workspace_id = workspace
10433        .database_id()
10434        .map(|id| i64::from(id).to_string())
10435        .or_else(|| workspace.session_id())?;
10436
10437    let legacy_key = match panel_key {
10438        "ProjectPanel" => {
10439            format!("{}-{:?}", "ProjectPanel", workspace_id)
10440        }
10441        "OutlinePanel" => {
10442            format!("{}-{:?}", "OutlinePanel", workspace_id)
10443        }
10444        "GitPanel" => {
10445            format!("{}-{:?}", "GitPanel", workspace_id)
10446        }
10447        "TerminalPanel" => {
10448            format!("{:?}-{:?}", "TerminalPanel", workspace_id)
10449        }
10450        _ => return None,
10451    };
10452
10453    let kvp = db::kvp::KeyValueStore::global(cx);
10454    let json = kvp.read_kvp(&legacy_key).log_err().flatten()?;
10455    let state = serde_json::from_str::<LegacyPanelState>(&json).log_err()?;
10456    let size = match dock_position {
10457        DockPosition::Bottom => state.height,
10458        DockPosition::Left | DockPosition::Right => state.width,
10459    }?;
10460
10461    cx.background_spawn(async move { kvp.delete_kvp(legacy_key).await })
10462        .detach_and_log_err(cx);
10463
10464    Some(size)
10465}
10466
10467#[cfg(test)]
10468mod tests {
10469    use std::{cell::RefCell, rc::Rc, sync::Arc, time::Duration};
10470
10471    use super::*;
10472    use crate::{
10473        dock::{PanelEvent, test::TestPanel},
10474        item::{
10475            ItemBufferKind, ItemEvent,
10476            test::{TestItem, TestProjectItem},
10477        },
10478    };
10479    use fs::FakeFs;
10480    use gpui::{
10481        DismissEvent, Empty, EventEmitter, FocusHandle, Focusable, Render, TestAppContext,
10482        UpdateGlobal, VisualTestContext, px,
10483    };
10484    use project::{Project, ProjectEntryId};
10485    use serde_json::json;
10486    use settings::SettingsStore;
10487    use util::path;
10488    use util::rel_path::rel_path;
10489
10490    #[gpui::test]
10491    async fn test_tab_disambiguation(cx: &mut TestAppContext) {
10492        init_test(cx);
10493
10494        let fs = FakeFs::new(cx.executor());
10495        let project = Project::test(fs, [], cx).await;
10496        let (workspace, cx) =
10497            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10498
10499        // Adding an item with no ambiguity renders the tab without detail.
10500        let item1 = cx.new(|cx| {
10501            let mut item = TestItem::new(cx);
10502            item.tab_descriptions = Some(vec!["c", "b1/c", "a/b1/c"]);
10503            item
10504        });
10505        workspace.update_in(cx, |workspace, window, cx| {
10506            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
10507        });
10508        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(0)));
10509
10510        // Adding an item that creates ambiguity increases the level of detail on
10511        // both tabs.
10512        let item2 = cx.new_window_entity(|_window, cx| {
10513            let mut item = TestItem::new(cx);
10514            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
10515            item
10516        });
10517        workspace.update_in(cx, |workspace, window, cx| {
10518            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
10519        });
10520        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
10521        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
10522
10523        // Adding an item that creates ambiguity increases the level of detail only
10524        // on the ambiguous tabs. In this case, the ambiguity can't be resolved so
10525        // we stop at the highest detail available.
10526        let item3 = cx.new(|cx| {
10527            let mut item = TestItem::new(cx);
10528            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
10529            item
10530        });
10531        workspace.update_in(cx, |workspace, window, cx| {
10532            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
10533        });
10534        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
10535        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
10536        item3.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
10537    }
10538
10539    #[gpui::test]
10540    async fn test_tracking_active_path(cx: &mut TestAppContext) {
10541        init_test(cx);
10542
10543        let fs = FakeFs::new(cx.executor());
10544        fs.insert_tree(
10545            "/root1",
10546            json!({
10547                "one.txt": "",
10548                "two.txt": "",
10549            }),
10550        )
10551        .await;
10552        fs.insert_tree(
10553            "/root2",
10554            json!({
10555                "three.txt": "",
10556            }),
10557        )
10558        .await;
10559
10560        let project = Project::test(fs, ["root1".as_ref()], cx).await;
10561        let (workspace, cx) =
10562            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10563        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10564        let worktree_id = project.update(cx, |project, cx| {
10565            project.worktrees(cx).next().unwrap().read(cx).id()
10566        });
10567
10568        let item1 = cx.new(|cx| {
10569            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
10570        });
10571        let item2 = cx.new(|cx| {
10572            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "two.txt", cx)])
10573        });
10574
10575        // Add an item to an empty pane
10576        workspace.update_in(cx, |workspace, window, cx| {
10577            workspace.add_item_to_active_pane(Box::new(item1), None, true, window, cx)
10578        });
10579        project.update(cx, |project, cx| {
10580            assert_eq!(
10581                project.active_entry(),
10582                project
10583                    .entry_for_path(&(worktree_id, rel_path("one.txt")).into(), cx)
10584                    .map(|e| e.id)
10585            );
10586        });
10587        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
10588
10589        // Add a second item to a non-empty pane
10590        workspace.update_in(cx, |workspace, window, cx| {
10591            workspace.add_item_to_active_pane(Box::new(item2), None, true, window, cx)
10592        });
10593        assert_eq!(cx.window_title().as_deref(), Some("root1 — two.txt"));
10594        project.update(cx, |project, cx| {
10595            assert_eq!(
10596                project.active_entry(),
10597                project
10598                    .entry_for_path(&(worktree_id, rel_path("two.txt")).into(), cx)
10599                    .map(|e| e.id)
10600            );
10601        });
10602
10603        // Close the active item
10604        pane.update_in(cx, |pane, window, cx| {
10605            pane.close_active_item(&Default::default(), window, cx)
10606        })
10607        .await
10608        .unwrap();
10609        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
10610        project.update(cx, |project, cx| {
10611            assert_eq!(
10612                project.active_entry(),
10613                project
10614                    .entry_for_path(&(worktree_id, rel_path("one.txt")).into(), cx)
10615                    .map(|e| e.id)
10616            );
10617        });
10618
10619        // Add a project folder
10620        project
10621            .update(cx, |project, cx| {
10622                project.find_or_create_worktree("root2", true, cx)
10623            })
10624            .await
10625            .unwrap();
10626        assert_eq!(cx.window_title().as_deref(), Some("root1, root2 — one.txt"));
10627
10628        // Remove a project folder
10629        project.update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
10630        assert_eq!(cx.window_title().as_deref(), Some("root2 — one.txt"));
10631    }
10632
10633    #[gpui::test]
10634    async fn test_close_window(cx: &mut TestAppContext) {
10635        init_test(cx);
10636
10637        let fs = FakeFs::new(cx.executor());
10638        fs.insert_tree("/root", json!({ "one": "" })).await;
10639
10640        let project = Project::test(fs, ["root".as_ref()], cx).await;
10641        let (workspace, cx) =
10642            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10643
10644        // When there are no dirty items, there's nothing to do.
10645        let item1 = cx.new(TestItem::new);
10646        workspace.update_in(cx, |w, window, cx| {
10647            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx)
10648        });
10649        let task = workspace.update_in(cx, |w, window, cx| {
10650            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
10651        });
10652        assert!(task.await.unwrap());
10653
10654        // When there are dirty untitled items, prompt to save each one. If the user
10655        // cancels any prompt, then abort.
10656        let item2 = cx.new(|cx| TestItem::new(cx).with_dirty(true));
10657        let item3 = cx.new(|cx| {
10658            TestItem::new(cx)
10659                .with_dirty(true)
10660                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
10661        });
10662        workspace.update_in(cx, |w, window, cx| {
10663            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
10664            w.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
10665        });
10666        let task = workspace.update_in(cx, |w, window, cx| {
10667            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
10668        });
10669        cx.executor().run_until_parked();
10670        cx.simulate_prompt_answer("Cancel"); // cancel save all
10671        cx.executor().run_until_parked();
10672        assert!(!cx.has_pending_prompt());
10673        assert!(!task.await.unwrap());
10674    }
10675
10676    #[gpui::test]
10677    async fn test_multi_workspace_close_window_multiple_workspaces_cancel(cx: &mut TestAppContext) {
10678        init_test(cx);
10679
10680        let fs = FakeFs::new(cx.executor());
10681        fs.insert_tree("/root", json!({ "one": "" })).await;
10682
10683        let project_a = Project::test(fs.clone(), ["root".as_ref()], cx).await;
10684        let project_b = Project::test(fs, ["root".as_ref()], cx).await;
10685        let multi_workspace_handle =
10686            cx.add_window(|window, cx| MultiWorkspace::test_new(project_a.clone(), window, cx));
10687        cx.run_until_parked();
10688
10689        let workspace_a = multi_workspace_handle
10690            .read_with(cx, |mw, _| mw.workspace().clone())
10691            .unwrap();
10692
10693        let workspace_b = multi_workspace_handle
10694            .update(cx, |mw, window, cx| {
10695                mw.test_add_workspace(project_b, window, cx)
10696            })
10697            .unwrap();
10698
10699        // Activate workspace A
10700        multi_workspace_handle
10701            .update(cx, |mw, window, cx| {
10702                let workspace = mw.workspaces()[0].clone();
10703                mw.activate(workspace, window, cx);
10704            })
10705            .unwrap();
10706
10707        let cx = &mut VisualTestContext::from_window(multi_workspace_handle.into(), cx);
10708
10709        // Workspace A has a clean item
10710        let item_a = cx.new(TestItem::new);
10711        workspace_a.update_in(cx, |w, window, cx| {
10712            w.add_item_to_active_pane(Box::new(item_a.clone()), None, true, window, cx)
10713        });
10714
10715        // Workspace B has a dirty item
10716        let item_b = cx.new(|cx| TestItem::new(cx).with_dirty(true));
10717        workspace_b.update_in(cx, |w, window, cx| {
10718            w.add_item_to_active_pane(Box::new(item_b.clone()), None, true, window, cx)
10719        });
10720
10721        // Verify workspace A is active
10722        multi_workspace_handle
10723            .read_with(cx, |mw, _| {
10724                assert_eq!(mw.active_workspace_index(), 0);
10725            })
10726            .unwrap();
10727
10728        // Dispatch CloseWindow — workspace A will pass, workspace B will prompt
10729        multi_workspace_handle
10730            .update(cx, |mw, window, cx| {
10731                mw.close_window(&CloseWindow, window, cx);
10732            })
10733            .unwrap();
10734        cx.run_until_parked();
10735
10736        // Workspace B should now be active since it has dirty items that need attention
10737        multi_workspace_handle
10738            .read_with(cx, |mw, _| {
10739                assert_eq!(
10740                    mw.active_workspace_index(),
10741                    1,
10742                    "workspace B should be activated when it prompts"
10743                );
10744            })
10745            .unwrap();
10746
10747        // User cancels the save prompt from workspace B
10748        cx.simulate_prompt_answer("Cancel");
10749        cx.run_until_parked();
10750
10751        // Window should still exist because workspace B's close was cancelled
10752        assert!(
10753            multi_workspace_handle.update(cx, |_, _, _| ()).is_ok(),
10754            "window should still exist after cancelling one workspace's close"
10755        );
10756    }
10757
10758    #[gpui::test]
10759    async fn test_close_window_with_serializable_items(cx: &mut TestAppContext) {
10760        init_test(cx);
10761
10762        // Register TestItem as a serializable item
10763        cx.update(|cx| {
10764            register_serializable_item::<TestItem>(cx);
10765        });
10766
10767        let fs = FakeFs::new(cx.executor());
10768        fs.insert_tree("/root", json!({ "one": "" })).await;
10769
10770        let project = Project::test(fs, ["root".as_ref()], cx).await;
10771        let (workspace, cx) =
10772            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10773
10774        // When there are dirty untitled items, but they can serialize, then there is no prompt.
10775        let item1 = cx.new(|cx| {
10776            TestItem::new(cx)
10777                .with_dirty(true)
10778                .with_serialize(|| Some(Task::ready(Ok(()))))
10779        });
10780        let item2 = cx.new(|cx| {
10781            TestItem::new(cx)
10782                .with_dirty(true)
10783                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
10784                .with_serialize(|| Some(Task::ready(Ok(()))))
10785        });
10786        workspace.update_in(cx, |w, window, cx| {
10787            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
10788            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
10789        });
10790        let task = workspace.update_in(cx, |w, window, cx| {
10791            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
10792        });
10793        assert!(task.await.unwrap());
10794    }
10795
10796    #[gpui::test]
10797    async fn test_close_pane_items(cx: &mut TestAppContext) {
10798        init_test(cx);
10799
10800        let fs = FakeFs::new(cx.executor());
10801
10802        let project = Project::test(fs, None, cx).await;
10803        let (workspace, cx) =
10804            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10805
10806        let item1 = cx.new(|cx| {
10807            TestItem::new(cx)
10808                .with_dirty(true)
10809                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10810        });
10811        let item2 = cx.new(|cx| {
10812            TestItem::new(cx)
10813                .with_dirty(true)
10814                .with_conflict(true)
10815                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10816        });
10817        let item3 = cx.new(|cx| {
10818            TestItem::new(cx)
10819                .with_dirty(true)
10820                .with_conflict(true)
10821                .with_project_items(&[dirty_project_item(3, "3.txt", cx)])
10822        });
10823        let item4 = cx.new(|cx| {
10824            TestItem::new(cx).with_dirty(true).with_project_items(&[{
10825                let project_item = TestProjectItem::new_untitled(cx);
10826                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
10827                project_item
10828            }])
10829        });
10830        let pane = workspace.update_in(cx, |workspace, window, cx| {
10831            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
10832            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
10833            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
10834            workspace.add_item_to_active_pane(Box::new(item4.clone()), None, true, window, cx);
10835            workspace.active_pane().clone()
10836        });
10837
10838        let close_items = pane.update_in(cx, |pane, window, cx| {
10839            pane.activate_item(1, true, true, window, cx);
10840            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
10841            let item1_id = item1.item_id();
10842            let item3_id = item3.item_id();
10843            let item4_id = item4.item_id();
10844            pane.close_items(window, cx, SaveIntent::Close, &move |id| {
10845                [item1_id, item3_id, item4_id].contains(&id)
10846            })
10847        });
10848        cx.executor().run_until_parked();
10849
10850        assert!(cx.has_pending_prompt());
10851        cx.simulate_prompt_answer("Save all");
10852
10853        cx.executor().run_until_parked();
10854
10855        // Item 1 is saved. There's a prompt to save item 3.
10856        pane.update(cx, |pane, cx| {
10857            assert_eq!(item1.read(cx).save_count, 1);
10858            assert_eq!(item1.read(cx).save_as_count, 0);
10859            assert_eq!(item1.read(cx).reload_count, 0);
10860            assert_eq!(pane.items_len(), 3);
10861            assert_eq!(pane.active_item().unwrap().item_id(), item3.item_id());
10862        });
10863        assert!(cx.has_pending_prompt());
10864
10865        // Cancel saving item 3.
10866        cx.simulate_prompt_answer("Discard");
10867        cx.executor().run_until_parked();
10868
10869        // Item 3 is reloaded. There's a prompt to save item 4.
10870        pane.update(cx, |pane, cx| {
10871            assert_eq!(item3.read(cx).save_count, 0);
10872            assert_eq!(item3.read(cx).save_as_count, 0);
10873            assert_eq!(item3.read(cx).reload_count, 1);
10874            assert_eq!(pane.items_len(), 2);
10875            assert_eq!(pane.active_item().unwrap().item_id(), item4.item_id());
10876        });
10877
10878        // There's a prompt for a path for item 4.
10879        cx.simulate_new_path_selection(|_| Some(Default::default()));
10880        close_items.await.unwrap();
10881
10882        // The requested items are closed.
10883        pane.update(cx, |pane, cx| {
10884            assert_eq!(item4.read(cx).save_count, 0);
10885            assert_eq!(item4.read(cx).save_as_count, 1);
10886            assert_eq!(item4.read(cx).reload_count, 0);
10887            assert_eq!(pane.items_len(), 1);
10888            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
10889        });
10890    }
10891
10892    #[gpui::test]
10893    async fn test_prompting_to_save_only_on_last_item_for_entry(cx: &mut TestAppContext) {
10894        init_test(cx);
10895
10896        let fs = FakeFs::new(cx.executor());
10897        let project = Project::test(fs, [], cx).await;
10898        let (workspace, cx) =
10899            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10900
10901        // Create several workspace items with single project entries, and two
10902        // workspace items with multiple project entries.
10903        let single_entry_items = (0..=4)
10904            .map(|project_entry_id| {
10905                cx.new(|cx| {
10906                    TestItem::new(cx)
10907                        .with_dirty(true)
10908                        .with_project_items(&[dirty_project_item(
10909                            project_entry_id,
10910                            &format!("{project_entry_id}.txt"),
10911                            cx,
10912                        )])
10913                })
10914            })
10915            .collect::<Vec<_>>();
10916        let item_2_3 = cx.new(|cx| {
10917            TestItem::new(cx)
10918                .with_dirty(true)
10919                .with_buffer_kind(ItemBufferKind::Multibuffer)
10920                .with_project_items(&[
10921                    single_entry_items[2].read(cx).project_items[0].clone(),
10922                    single_entry_items[3].read(cx).project_items[0].clone(),
10923                ])
10924        });
10925        let item_3_4 = cx.new(|cx| {
10926            TestItem::new(cx)
10927                .with_dirty(true)
10928                .with_buffer_kind(ItemBufferKind::Multibuffer)
10929                .with_project_items(&[
10930                    single_entry_items[3].read(cx).project_items[0].clone(),
10931                    single_entry_items[4].read(cx).project_items[0].clone(),
10932                ])
10933        });
10934
10935        // Create two panes that contain the following project entries:
10936        //   left pane:
10937        //     multi-entry items:   (2, 3)
10938        //     single-entry items:  0, 2, 3, 4
10939        //   right pane:
10940        //     single-entry items:  4, 1
10941        //     multi-entry items:   (3, 4)
10942        let (left_pane, right_pane) = workspace.update_in(cx, |workspace, window, cx| {
10943            let left_pane = workspace.active_pane().clone();
10944            workspace.add_item_to_active_pane(Box::new(item_2_3.clone()), None, true, window, cx);
10945            workspace.add_item_to_active_pane(
10946                single_entry_items[0].boxed_clone(),
10947                None,
10948                true,
10949                window,
10950                cx,
10951            );
10952            workspace.add_item_to_active_pane(
10953                single_entry_items[2].boxed_clone(),
10954                None,
10955                true,
10956                window,
10957                cx,
10958            );
10959            workspace.add_item_to_active_pane(
10960                single_entry_items[3].boxed_clone(),
10961                None,
10962                true,
10963                window,
10964                cx,
10965            );
10966            workspace.add_item_to_active_pane(
10967                single_entry_items[4].boxed_clone(),
10968                None,
10969                true,
10970                window,
10971                cx,
10972            );
10973
10974            let right_pane =
10975                workspace.split_and_clone(left_pane.clone(), SplitDirection::Right, window, cx);
10976
10977            let boxed_clone = single_entry_items[1].boxed_clone();
10978            let right_pane = window.spawn(cx, async move |cx| {
10979                right_pane.await.inspect(|right_pane| {
10980                    right_pane
10981                        .update_in(cx, |pane, window, cx| {
10982                            pane.add_item(boxed_clone, true, true, None, window, cx);
10983                            pane.add_item(Box::new(item_3_4.clone()), true, true, None, window, cx);
10984                        })
10985                        .unwrap();
10986                })
10987            });
10988
10989            (left_pane, right_pane)
10990        });
10991        let right_pane = right_pane.await.unwrap();
10992        cx.focus(&right_pane);
10993
10994        let close = right_pane.update_in(cx, |pane, window, cx| {
10995            pane.close_all_items(&CloseAllItems::default(), window, cx)
10996                .unwrap()
10997        });
10998        cx.executor().run_until_parked();
10999
11000        let msg = cx.pending_prompt().unwrap().0;
11001        assert!(msg.contains("1.txt"));
11002        assert!(!msg.contains("2.txt"));
11003        assert!(!msg.contains("3.txt"));
11004        assert!(!msg.contains("4.txt"));
11005
11006        // With best-effort close, cancelling item 1 keeps it open but items 4
11007        // and (3,4) still close since their entries exist in left pane.
11008        cx.simulate_prompt_answer("Cancel");
11009        close.await;
11010
11011        right_pane.read_with(cx, |pane, _| {
11012            assert_eq!(pane.items_len(), 1);
11013        });
11014
11015        // Remove item 3 from left pane, making (2,3) the only item with entry 3.
11016        left_pane
11017            .update_in(cx, |left_pane, window, cx| {
11018                left_pane.close_item_by_id(
11019                    single_entry_items[3].entity_id(),
11020                    SaveIntent::Skip,
11021                    window,
11022                    cx,
11023                )
11024            })
11025            .await
11026            .unwrap();
11027
11028        let close = left_pane.update_in(cx, |pane, window, cx| {
11029            pane.close_all_items(&CloseAllItems::default(), window, cx)
11030                .unwrap()
11031        });
11032        cx.executor().run_until_parked();
11033
11034        let details = cx.pending_prompt().unwrap().1;
11035        assert!(details.contains("0.txt"));
11036        assert!(details.contains("3.txt"));
11037        assert!(details.contains("4.txt"));
11038        // Ideally 2.txt wouldn't appear since entry 2 still exists in item 2.
11039        // But we can only save whole items, so saving (2,3) for entry 3 includes 2.
11040        // assert!(!details.contains("2.txt"));
11041
11042        cx.simulate_prompt_answer("Save all");
11043        cx.executor().run_until_parked();
11044        close.await;
11045
11046        left_pane.read_with(cx, |pane, _| {
11047            assert_eq!(pane.items_len(), 0);
11048        });
11049    }
11050
11051    #[gpui::test]
11052    async fn test_autosave(cx: &mut gpui::TestAppContext) {
11053        init_test(cx);
11054
11055        let fs = FakeFs::new(cx.executor());
11056        let project = Project::test(fs, [], cx).await;
11057        let (workspace, cx) =
11058            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11059        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11060
11061        let item = cx.new(|cx| {
11062            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
11063        });
11064        let item_id = item.entity_id();
11065        workspace.update_in(cx, |workspace, window, cx| {
11066            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
11067        });
11068
11069        // Autosave on window change.
11070        item.update(cx, |item, cx| {
11071            SettingsStore::update_global(cx, |settings, cx| {
11072                settings.update_user_settings(cx, |settings| {
11073                    settings.workspace.autosave = Some(AutosaveSetting::OnWindowChange);
11074                })
11075            });
11076            item.is_dirty = true;
11077        });
11078
11079        // Deactivating the window saves the file.
11080        cx.deactivate_window();
11081        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
11082
11083        // Re-activating the window doesn't save the file.
11084        cx.update(|window, _| window.activate_window());
11085        cx.executor().run_until_parked();
11086        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
11087
11088        // Autosave on focus change.
11089        item.update_in(cx, |item, window, cx| {
11090            cx.focus_self(window);
11091            SettingsStore::update_global(cx, |settings, cx| {
11092                settings.update_user_settings(cx, |settings| {
11093                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
11094                })
11095            });
11096            item.is_dirty = true;
11097        });
11098        // Blurring the item saves the file.
11099        item.update_in(cx, |_, window, _| window.blur());
11100        cx.executor().run_until_parked();
11101        item.read_with(cx, |item, _| assert_eq!(item.save_count, 2));
11102
11103        // Deactivating the window still saves the file.
11104        item.update_in(cx, |item, window, cx| {
11105            cx.focus_self(window);
11106            item.is_dirty = true;
11107        });
11108        cx.deactivate_window();
11109        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
11110
11111        // Autosave after delay.
11112        item.update(cx, |item, cx| {
11113            SettingsStore::update_global(cx, |settings, cx| {
11114                settings.update_user_settings(cx, |settings| {
11115                    settings.workspace.autosave = Some(AutosaveSetting::AfterDelay {
11116                        milliseconds: 500.into(),
11117                    });
11118                })
11119            });
11120            item.is_dirty = true;
11121            cx.emit(ItemEvent::Edit);
11122        });
11123
11124        // Delay hasn't fully expired, so the file is still dirty and unsaved.
11125        cx.executor().advance_clock(Duration::from_millis(250));
11126        item.read_with(cx, |item, _| assert_eq!(item.save_count, 3));
11127
11128        // After delay expires, the file is saved.
11129        cx.executor().advance_clock(Duration::from_millis(250));
11130        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
11131
11132        // Autosave after delay, should save earlier than delay if tab is closed
11133        item.update(cx, |item, cx| {
11134            item.is_dirty = true;
11135            cx.emit(ItemEvent::Edit);
11136        });
11137        cx.executor().advance_clock(Duration::from_millis(250));
11138        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
11139
11140        // // Ensure auto save with delay saves the item on close, even if the timer hasn't yet run out.
11141        pane.update_in(cx, |pane, window, cx| {
11142            pane.close_items(window, cx, SaveIntent::Close, &move |id| id == item_id)
11143        })
11144        .await
11145        .unwrap();
11146        assert!(!cx.has_pending_prompt());
11147        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
11148
11149        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
11150        workspace.update_in(cx, |workspace, window, cx| {
11151            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
11152        });
11153        item.update_in(cx, |item, _window, cx| {
11154            item.is_dirty = true;
11155            for project_item in &mut item.project_items {
11156                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
11157            }
11158        });
11159        cx.run_until_parked();
11160        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
11161
11162        // Autosave on focus change, ensuring closing the tab counts as such.
11163        item.update(cx, |item, cx| {
11164            SettingsStore::update_global(cx, |settings, cx| {
11165                settings.update_user_settings(cx, |settings| {
11166                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
11167                })
11168            });
11169            item.is_dirty = true;
11170            for project_item in &mut item.project_items {
11171                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
11172            }
11173        });
11174
11175        pane.update_in(cx, |pane, window, cx| {
11176            pane.close_items(window, cx, SaveIntent::Close, &move |id| id == item_id)
11177        })
11178        .await
11179        .unwrap();
11180        assert!(!cx.has_pending_prompt());
11181        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
11182
11183        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
11184        workspace.update_in(cx, |workspace, window, cx| {
11185            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
11186        });
11187        item.update_in(cx, |item, window, cx| {
11188            item.project_items[0].update(cx, |item, _| {
11189                item.entry_id = None;
11190            });
11191            item.is_dirty = true;
11192            window.blur();
11193        });
11194        cx.run_until_parked();
11195        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
11196
11197        // Ensure autosave is prevented for deleted files also when closing the buffer.
11198        let _close_items = pane.update_in(cx, |pane, window, cx| {
11199            pane.close_items(window, cx, SaveIntent::Close, &move |id| id == item_id)
11200        });
11201        cx.run_until_parked();
11202        assert!(cx.has_pending_prompt());
11203        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
11204    }
11205
11206    #[gpui::test]
11207    async fn test_autosave_on_focus_change_in_multibuffer(cx: &mut gpui::TestAppContext) {
11208        init_test(cx);
11209
11210        let fs = FakeFs::new(cx.executor());
11211        let project = Project::test(fs, [], cx).await;
11212        let (workspace, cx) =
11213            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11214
11215        // Create a multibuffer-like item with two child focus handles,
11216        // simulating individual buffer editors within a multibuffer.
11217        let item = cx.new(|cx| {
11218            TestItem::new(cx)
11219                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
11220                .with_child_focus_handles(2, cx)
11221        });
11222        workspace.update_in(cx, |workspace, window, cx| {
11223            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
11224        });
11225
11226        // Set autosave to OnFocusChange and focus the first child handle,
11227        // simulating the user's cursor being inside one of the multibuffer's excerpts.
11228        item.update_in(cx, |item, window, cx| {
11229            SettingsStore::update_global(cx, |settings, cx| {
11230                settings.update_user_settings(cx, |settings| {
11231                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
11232                })
11233            });
11234            item.is_dirty = true;
11235            window.focus(&item.child_focus_handles[0], cx);
11236        });
11237        cx.executor().run_until_parked();
11238        item.read_with(cx, |item, _| assert_eq!(item.save_count, 0));
11239
11240        // Moving focus from one child to another within the same item should
11241        // NOT trigger autosave — focus is still within the item's focus hierarchy.
11242        item.update_in(cx, |item, window, cx| {
11243            window.focus(&item.child_focus_handles[1], cx);
11244        });
11245        cx.executor().run_until_parked();
11246        item.read_with(cx, |item, _| {
11247            assert_eq!(
11248                item.save_count, 0,
11249                "Switching focus between children within the same item should not autosave"
11250            );
11251        });
11252
11253        // Blurring the item saves the file. This is the core regression scenario:
11254        // with `on_blur`, this would NOT trigger because `on_blur` only fires when
11255        // the item's own focus handle is the leaf that lost focus. In a multibuffer,
11256        // the leaf is always a child focus handle, so `on_blur` never detected
11257        // focus leaving the item.
11258        item.update_in(cx, |_, window, _| window.blur());
11259        cx.executor().run_until_parked();
11260        item.read_with(cx, |item, _| {
11261            assert_eq!(
11262                item.save_count, 1,
11263                "Blurring should trigger autosave when focus was on a child of the item"
11264            );
11265        });
11266
11267        // Deactivating the window should also trigger autosave when a child of
11268        // the multibuffer item currently owns focus.
11269        item.update_in(cx, |item, window, cx| {
11270            item.is_dirty = true;
11271            window.focus(&item.child_focus_handles[0], cx);
11272        });
11273        cx.executor().run_until_parked();
11274        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
11275
11276        cx.deactivate_window();
11277        item.read_with(cx, |item, _| {
11278            assert_eq!(
11279                item.save_count, 2,
11280                "Deactivating window should trigger autosave when focus was on a child"
11281            );
11282        });
11283    }
11284
11285    #[gpui::test]
11286    async fn test_pane_navigation(cx: &mut gpui::TestAppContext) {
11287        init_test(cx);
11288
11289        let fs = FakeFs::new(cx.executor());
11290
11291        let project = Project::test(fs, [], cx).await;
11292        let (workspace, cx) =
11293            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11294
11295        let item = cx.new(|cx| {
11296            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
11297        });
11298        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11299        let toolbar = pane.read_with(cx, |pane, _| pane.toolbar().clone());
11300        let toolbar_notify_count = Rc::new(RefCell::new(0));
11301
11302        workspace.update_in(cx, |workspace, window, cx| {
11303            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
11304            let toolbar_notification_count = toolbar_notify_count.clone();
11305            cx.observe_in(&toolbar, window, move |_, _, _, _| {
11306                *toolbar_notification_count.borrow_mut() += 1
11307            })
11308            .detach();
11309        });
11310
11311        pane.read_with(cx, |pane, _| {
11312            assert!(!pane.can_navigate_backward());
11313            assert!(!pane.can_navigate_forward());
11314        });
11315
11316        item.update_in(cx, |item, _, cx| {
11317            item.set_state("one".to_string(), cx);
11318        });
11319
11320        // Toolbar must be notified to re-render the navigation buttons
11321        assert_eq!(*toolbar_notify_count.borrow(), 1);
11322
11323        pane.read_with(cx, |pane, _| {
11324            assert!(pane.can_navigate_backward());
11325            assert!(!pane.can_navigate_forward());
11326        });
11327
11328        workspace
11329            .update_in(cx, |workspace, window, cx| {
11330                workspace.go_back(pane.downgrade(), window, cx)
11331            })
11332            .await
11333            .unwrap();
11334
11335        assert_eq!(*toolbar_notify_count.borrow(), 2);
11336        pane.read_with(cx, |pane, _| {
11337            assert!(!pane.can_navigate_backward());
11338            assert!(pane.can_navigate_forward());
11339        });
11340    }
11341
11342    /// Tests that the navigation history deduplicates entries for the same item.
11343    ///
11344    /// When navigating back and forth between items (e.g., A -> B -> A -> B -> A -> B -> C),
11345    /// the navigation history deduplicates by keeping only the most recent visit to each item,
11346    /// resulting in [A, B, C] instead of [A, B, A, B, A, B, C]. This ensures that Go Back (Ctrl-O)
11347    /// navigates through unique items efficiently: C -> B -> A, rather than bouncing between
11348    /// repeated entries: C -> B -> A -> B -> A -> B -> A.
11349    ///
11350    /// This behavior prevents the navigation history from growing unnecessarily large and provides
11351    /// a better user experience by eliminating redundant navigation steps when jumping between files.
11352    #[gpui::test]
11353    async fn test_navigation_history_deduplication(cx: &mut gpui::TestAppContext) {
11354        init_test(cx);
11355
11356        let fs = FakeFs::new(cx.executor());
11357        let project = Project::test(fs, [], cx).await;
11358        let (workspace, cx) =
11359            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11360
11361        let item_a = cx.new(|cx| {
11362            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "a.txt", cx)])
11363        });
11364        let item_b = cx.new(|cx| {
11365            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "b.txt", cx)])
11366        });
11367        let item_c = cx.new(|cx| {
11368            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "c.txt", cx)])
11369        });
11370
11371        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11372
11373        workspace.update_in(cx, |workspace, window, cx| {
11374            workspace.add_item_to_active_pane(Box::new(item_a.clone()), None, true, window, cx);
11375            workspace.add_item_to_active_pane(Box::new(item_b.clone()), None, true, window, cx);
11376            workspace.add_item_to_active_pane(Box::new(item_c.clone()), None, true, window, cx);
11377        });
11378
11379        workspace.update_in(cx, |workspace, window, cx| {
11380            workspace.activate_item(&item_a, false, false, window, cx);
11381        });
11382        cx.run_until_parked();
11383
11384        workspace.update_in(cx, |workspace, window, cx| {
11385            workspace.activate_item(&item_b, false, false, window, cx);
11386        });
11387        cx.run_until_parked();
11388
11389        workspace.update_in(cx, |workspace, window, cx| {
11390            workspace.activate_item(&item_a, false, false, window, cx);
11391        });
11392        cx.run_until_parked();
11393
11394        workspace.update_in(cx, |workspace, window, cx| {
11395            workspace.activate_item(&item_b, false, false, window, cx);
11396        });
11397        cx.run_until_parked();
11398
11399        workspace.update_in(cx, |workspace, window, cx| {
11400            workspace.activate_item(&item_a, false, false, window, cx);
11401        });
11402        cx.run_until_parked();
11403
11404        workspace.update_in(cx, |workspace, window, cx| {
11405            workspace.activate_item(&item_b, false, false, window, cx);
11406        });
11407        cx.run_until_parked();
11408
11409        workspace.update_in(cx, |workspace, window, cx| {
11410            workspace.activate_item(&item_c, false, false, window, cx);
11411        });
11412        cx.run_until_parked();
11413
11414        let backward_count = pane.read_with(cx, |pane, cx| {
11415            let mut count = 0;
11416            pane.nav_history().for_each_entry(cx, &mut |_, _| {
11417                count += 1;
11418            });
11419            count
11420        });
11421        assert!(
11422            backward_count <= 4,
11423            "Should have at most 4 entries, got {}",
11424            backward_count
11425        );
11426
11427        workspace
11428            .update_in(cx, |workspace, window, cx| {
11429                workspace.go_back(pane.downgrade(), window, cx)
11430            })
11431            .await
11432            .unwrap();
11433
11434        let active_item = workspace.read_with(cx, |workspace, cx| {
11435            workspace.active_item(cx).unwrap().item_id()
11436        });
11437        assert_eq!(
11438            active_item,
11439            item_b.entity_id(),
11440            "After first go_back, should be at item B"
11441        );
11442
11443        workspace
11444            .update_in(cx, |workspace, window, cx| {
11445                workspace.go_back(pane.downgrade(), window, cx)
11446            })
11447            .await
11448            .unwrap();
11449
11450        let active_item = workspace.read_with(cx, |workspace, cx| {
11451            workspace.active_item(cx).unwrap().item_id()
11452        });
11453        assert_eq!(
11454            active_item,
11455            item_a.entity_id(),
11456            "After second go_back, should be at item A"
11457        );
11458
11459        pane.read_with(cx, |pane, _| {
11460            assert!(pane.can_navigate_forward(), "Should be able to go forward");
11461        });
11462    }
11463
11464    #[gpui::test]
11465    async fn test_activate_last_pane(cx: &mut gpui::TestAppContext) {
11466        init_test(cx);
11467        let fs = FakeFs::new(cx.executor());
11468        let project = Project::test(fs, [], cx).await;
11469        let (multi_workspace, cx) =
11470            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
11471        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
11472
11473        workspace.update_in(cx, |workspace, window, cx| {
11474            let first_item = cx.new(|cx| {
11475                TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
11476            });
11477            workspace.add_item_to_active_pane(Box::new(first_item), None, true, window, cx);
11478            workspace.split_pane(
11479                workspace.active_pane().clone(),
11480                SplitDirection::Right,
11481                window,
11482                cx,
11483            );
11484            workspace.split_pane(
11485                workspace.active_pane().clone(),
11486                SplitDirection::Right,
11487                window,
11488                cx,
11489            );
11490        });
11491
11492        let (first_pane_id, target_last_pane_id) = workspace.update(cx, |workspace, _cx| {
11493            let panes = workspace.center.panes();
11494            assert!(panes.len() >= 2);
11495            (
11496                panes.first().expect("at least one pane").entity_id(),
11497                panes.last().expect("at least one pane").entity_id(),
11498            )
11499        });
11500
11501        workspace.update_in(cx, |workspace, window, cx| {
11502            workspace.activate_pane_at_index(&ActivatePane(0), window, cx);
11503        });
11504        workspace.update(cx, |workspace, _| {
11505            assert_eq!(workspace.active_pane().entity_id(), first_pane_id);
11506            assert_ne!(workspace.active_pane().entity_id(), target_last_pane_id);
11507        });
11508
11509        cx.dispatch_action(ActivateLastPane);
11510
11511        workspace.update(cx, |workspace, _| {
11512            assert_eq!(workspace.active_pane().entity_id(), target_last_pane_id);
11513        });
11514    }
11515
11516    #[gpui::test]
11517    async fn test_toggle_docks_and_panels(cx: &mut gpui::TestAppContext) {
11518        init_test(cx);
11519        let fs = FakeFs::new(cx.executor());
11520
11521        let project = Project::test(fs, [], cx).await;
11522        let (workspace, cx) =
11523            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11524
11525        let panel = workspace.update_in(cx, |workspace, window, cx| {
11526            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
11527            workspace.add_panel(panel.clone(), window, cx);
11528
11529            workspace
11530                .right_dock()
11531                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
11532
11533            panel
11534        });
11535
11536        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11537        pane.update_in(cx, |pane, window, cx| {
11538            let item = cx.new(TestItem::new);
11539            pane.add_item(Box::new(item), true, true, None, window, cx);
11540        });
11541
11542        // Transfer focus from center to panel
11543        workspace.update_in(cx, |workspace, window, cx| {
11544            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11545        });
11546
11547        workspace.update_in(cx, |workspace, window, cx| {
11548            assert!(workspace.right_dock().read(cx).is_open());
11549            assert!(!panel.is_zoomed(window, cx));
11550            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11551        });
11552
11553        // Transfer focus from panel to center
11554        workspace.update_in(cx, |workspace, window, cx| {
11555            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11556        });
11557
11558        workspace.update_in(cx, |workspace, window, cx| {
11559            assert!(workspace.right_dock().read(cx).is_open());
11560            assert!(!panel.is_zoomed(window, cx));
11561            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11562            assert!(pane.read(cx).focus_handle(cx).contains_focused(window, cx));
11563        });
11564
11565        // Close the dock
11566        workspace.update_in(cx, |workspace, window, cx| {
11567            workspace.toggle_dock(DockPosition::Right, window, cx);
11568        });
11569
11570        workspace.update_in(cx, |workspace, window, cx| {
11571            assert!(!workspace.right_dock().read(cx).is_open());
11572            assert!(!panel.is_zoomed(window, cx));
11573            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11574            assert!(pane.read(cx).focus_handle(cx).contains_focused(window, cx));
11575        });
11576
11577        // Open the dock
11578        workspace.update_in(cx, |workspace, window, cx| {
11579            workspace.toggle_dock(DockPosition::Right, window, cx);
11580        });
11581
11582        workspace.update_in(cx, |workspace, window, cx| {
11583            assert!(workspace.right_dock().read(cx).is_open());
11584            assert!(!panel.is_zoomed(window, cx));
11585            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11586        });
11587
11588        // Focus and zoom panel
11589        panel.update_in(cx, |panel, window, cx| {
11590            cx.focus_self(window);
11591            panel.set_zoomed(true, window, cx)
11592        });
11593
11594        workspace.update_in(cx, |workspace, window, cx| {
11595            assert!(workspace.right_dock().read(cx).is_open());
11596            assert!(panel.is_zoomed(window, cx));
11597            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11598        });
11599
11600        // Transfer focus to the center closes the dock
11601        workspace.update_in(cx, |workspace, window, cx| {
11602            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11603        });
11604
11605        workspace.update_in(cx, |workspace, window, cx| {
11606            assert!(!workspace.right_dock().read(cx).is_open());
11607            assert!(panel.is_zoomed(window, cx));
11608            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11609        });
11610
11611        // Transferring focus back to the panel keeps it zoomed
11612        workspace.update_in(cx, |workspace, window, cx| {
11613            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11614        });
11615
11616        workspace.update_in(cx, |workspace, window, cx| {
11617            assert!(workspace.right_dock().read(cx).is_open());
11618            assert!(panel.is_zoomed(window, cx));
11619            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11620        });
11621
11622        // Close the dock while it is zoomed
11623        workspace.update_in(cx, |workspace, window, cx| {
11624            workspace.toggle_dock(DockPosition::Right, window, cx)
11625        });
11626
11627        workspace.update_in(cx, |workspace, window, cx| {
11628            assert!(!workspace.right_dock().read(cx).is_open());
11629            assert!(panel.is_zoomed(window, cx));
11630            assert!(workspace.zoomed.is_none());
11631            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11632        });
11633
11634        // Opening the dock, when it's zoomed, retains focus
11635        workspace.update_in(cx, |workspace, window, cx| {
11636            workspace.toggle_dock(DockPosition::Right, window, cx)
11637        });
11638
11639        workspace.update_in(cx, |workspace, window, cx| {
11640            assert!(workspace.right_dock().read(cx).is_open());
11641            assert!(panel.is_zoomed(window, cx));
11642            assert!(workspace.zoomed.is_some());
11643            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11644        });
11645
11646        // Unzoom and close the panel, zoom the active pane.
11647        panel.update_in(cx, |panel, window, cx| panel.set_zoomed(false, window, cx));
11648        workspace.update_in(cx, |workspace, window, cx| {
11649            workspace.toggle_dock(DockPosition::Right, window, cx)
11650        });
11651        pane.update_in(cx, |pane, window, cx| {
11652            pane.toggle_zoom(&Default::default(), window, cx)
11653        });
11654
11655        // Opening a dock unzooms the pane.
11656        workspace.update_in(cx, |workspace, window, cx| {
11657            workspace.toggle_dock(DockPosition::Right, window, cx)
11658        });
11659        workspace.update_in(cx, |workspace, window, cx| {
11660            let pane = pane.read(cx);
11661            assert!(!pane.is_zoomed());
11662            assert!(!pane.focus_handle(cx).is_focused(window));
11663            assert!(workspace.right_dock().read(cx).is_open());
11664            assert!(workspace.zoomed.is_none());
11665        });
11666    }
11667
11668    #[gpui::test]
11669    async fn test_close_panel_on_toggle(cx: &mut gpui::TestAppContext) {
11670        init_test(cx);
11671        let fs = FakeFs::new(cx.executor());
11672
11673        let project = Project::test(fs, [], cx).await;
11674        let (workspace, cx) =
11675            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11676
11677        let panel = workspace.update_in(cx, |workspace, window, cx| {
11678            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
11679            workspace.add_panel(panel.clone(), window, cx);
11680            panel
11681        });
11682
11683        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
11684        pane.update_in(cx, |pane, window, cx| {
11685            let item = cx.new(TestItem::new);
11686            pane.add_item(Box::new(item), true, true, None, window, cx);
11687        });
11688
11689        // Enable close_panel_on_toggle
11690        cx.update_global(|store: &mut SettingsStore, cx| {
11691            store.update_user_settings(cx, |settings| {
11692                settings.workspace.close_panel_on_toggle = Some(true);
11693            });
11694        });
11695
11696        // Panel starts closed. Toggling should open and focus it.
11697        workspace.update_in(cx, |workspace, window, cx| {
11698            assert!(!workspace.right_dock().read(cx).is_open());
11699            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11700        });
11701
11702        workspace.update_in(cx, |workspace, window, cx| {
11703            assert!(
11704                workspace.right_dock().read(cx).is_open(),
11705                "Dock should be open after toggling from center"
11706            );
11707            assert!(
11708                panel.read(cx).focus_handle(cx).contains_focused(window, cx),
11709                "Panel should be focused after toggling from center"
11710            );
11711        });
11712
11713        // Panel is open and focused. Toggling should close the panel and
11714        // return focus to the center.
11715        workspace.update_in(cx, |workspace, window, cx| {
11716            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11717        });
11718
11719        workspace.update_in(cx, |workspace, window, cx| {
11720            assert!(
11721                !workspace.right_dock().read(cx).is_open(),
11722                "Dock should be closed after toggling from focused panel"
11723            );
11724            assert!(
11725                !panel.read(cx).focus_handle(cx).contains_focused(window, cx),
11726                "Panel should not be focused after toggling from focused panel"
11727            );
11728        });
11729
11730        // Open the dock and focus something else so the panel is open but not
11731        // focused. Toggling should focus the panel (not close it).
11732        workspace.update_in(cx, |workspace, window, cx| {
11733            workspace
11734                .right_dock()
11735                .update(cx, |dock, cx| dock.set_open(true, window, cx));
11736            window.focus(&pane.read(cx).focus_handle(cx), cx);
11737        });
11738
11739        workspace.update_in(cx, |workspace, window, cx| {
11740            assert!(workspace.right_dock().read(cx).is_open());
11741            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
11742            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11743        });
11744
11745        workspace.update_in(cx, |workspace, window, cx| {
11746            assert!(
11747                workspace.right_dock().read(cx).is_open(),
11748                "Dock should remain open when toggling focuses an open-but-unfocused panel"
11749            );
11750            assert!(
11751                panel.read(cx).focus_handle(cx).contains_focused(window, cx),
11752                "Panel should be focused after toggling an open-but-unfocused panel"
11753            );
11754        });
11755
11756        // Now disable the setting and verify the original behavior: toggling
11757        // from a focused panel moves focus to center but leaves the dock open.
11758        cx.update_global(|store: &mut SettingsStore, cx| {
11759            store.update_user_settings(cx, |settings| {
11760                settings.workspace.close_panel_on_toggle = Some(false);
11761            });
11762        });
11763
11764        workspace.update_in(cx, |workspace, window, cx| {
11765            workspace.toggle_panel_focus::<TestPanel>(window, cx);
11766        });
11767
11768        workspace.update_in(cx, |workspace, window, cx| {
11769            assert!(
11770                workspace.right_dock().read(cx).is_open(),
11771                "Dock should remain open when setting is disabled"
11772            );
11773            assert!(
11774                !panel.read(cx).focus_handle(cx).contains_focused(window, cx),
11775                "Panel should not be focused after toggling with setting disabled"
11776            );
11777        });
11778    }
11779
11780    #[gpui::test]
11781    async fn test_pane_zoom_in_out(cx: &mut TestAppContext) {
11782        init_test(cx);
11783        let fs = FakeFs::new(cx.executor());
11784
11785        let project = Project::test(fs, [], cx).await;
11786        let (workspace, cx) =
11787            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11788
11789        let pane = workspace.update_in(cx, |workspace, _window, _cx| {
11790            workspace.active_pane().clone()
11791        });
11792
11793        // Add an item to the pane so it can be zoomed
11794        workspace.update_in(cx, |workspace, window, cx| {
11795            let item = cx.new(TestItem::new);
11796            workspace.add_item(pane.clone(), Box::new(item), None, true, true, window, cx);
11797        });
11798
11799        // Initially not zoomed
11800        workspace.update_in(cx, |workspace, _window, cx| {
11801            assert!(!pane.read(cx).is_zoomed(), "Pane starts unzoomed");
11802            assert!(
11803                workspace.zoomed.is_none(),
11804                "Workspace should track no zoomed pane"
11805            );
11806            assert!(pane.read(cx).items_len() > 0, "Pane should have items");
11807        });
11808
11809        // Zoom In
11810        pane.update_in(cx, |pane, window, cx| {
11811            pane.zoom_in(&crate::ZoomIn, window, cx);
11812        });
11813
11814        workspace.update_in(cx, |workspace, window, cx| {
11815            assert!(
11816                pane.read(cx).is_zoomed(),
11817                "Pane should be zoomed after ZoomIn"
11818            );
11819            assert!(
11820                workspace.zoomed.is_some(),
11821                "Workspace should track the zoomed pane"
11822            );
11823            assert!(
11824                pane.read(cx).focus_handle(cx).contains_focused(window, cx),
11825                "ZoomIn should focus the pane"
11826            );
11827        });
11828
11829        // Zoom In again is a no-op
11830        pane.update_in(cx, |pane, window, cx| {
11831            pane.zoom_in(&crate::ZoomIn, window, cx);
11832        });
11833
11834        workspace.update_in(cx, |workspace, window, cx| {
11835            assert!(pane.read(cx).is_zoomed(), "Second ZoomIn keeps pane zoomed");
11836            assert!(
11837                workspace.zoomed.is_some(),
11838                "Workspace still tracks zoomed pane"
11839            );
11840            assert!(
11841                pane.read(cx).focus_handle(cx).contains_focused(window, cx),
11842                "Pane remains focused after repeated ZoomIn"
11843            );
11844        });
11845
11846        // Zoom Out
11847        pane.update_in(cx, |pane, window, cx| {
11848            pane.zoom_out(&crate::ZoomOut, window, cx);
11849        });
11850
11851        workspace.update_in(cx, |workspace, _window, cx| {
11852            assert!(
11853                !pane.read(cx).is_zoomed(),
11854                "Pane should unzoom after ZoomOut"
11855            );
11856            assert!(
11857                workspace.zoomed.is_none(),
11858                "Workspace clears zoom tracking after ZoomOut"
11859            );
11860        });
11861
11862        // Zoom Out again is a no-op
11863        pane.update_in(cx, |pane, window, cx| {
11864            pane.zoom_out(&crate::ZoomOut, window, cx);
11865        });
11866
11867        workspace.update_in(cx, |workspace, _window, cx| {
11868            assert!(
11869                !pane.read(cx).is_zoomed(),
11870                "Second ZoomOut keeps pane unzoomed"
11871            );
11872            assert!(
11873                workspace.zoomed.is_none(),
11874                "Workspace remains without zoomed pane"
11875            );
11876        });
11877    }
11878
11879    #[gpui::test]
11880    async fn test_toggle_all_docks(cx: &mut gpui::TestAppContext) {
11881        init_test(cx);
11882        let fs = FakeFs::new(cx.executor());
11883
11884        let project = Project::test(fs, [], cx).await;
11885        let (workspace, cx) =
11886            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11887        workspace.update_in(cx, |workspace, window, cx| {
11888            // Open two docks
11889            let left_dock = workspace.dock_at_position(DockPosition::Left);
11890            let right_dock = workspace.dock_at_position(DockPosition::Right);
11891
11892            left_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
11893            right_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
11894
11895            assert!(left_dock.read(cx).is_open());
11896            assert!(right_dock.read(cx).is_open());
11897        });
11898
11899        workspace.update_in(cx, |workspace, window, cx| {
11900            // Toggle all docks - should close both
11901            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
11902
11903            let left_dock = workspace.dock_at_position(DockPosition::Left);
11904            let right_dock = workspace.dock_at_position(DockPosition::Right);
11905            assert!(!left_dock.read(cx).is_open());
11906            assert!(!right_dock.read(cx).is_open());
11907        });
11908
11909        workspace.update_in(cx, |workspace, window, cx| {
11910            // Toggle again - should reopen both
11911            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
11912
11913            let left_dock = workspace.dock_at_position(DockPosition::Left);
11914            let right_dock = workspace.dock_at_position(DockPosition::Right);
11915            assert!(left_dock.read(cx).is_open());
11916            assert!(right_dock.read(cx).is_open());
11917        });
11918    }
11919
11920    #[gpui::test]
11921    async fn test_toggle_all_with_manual_close(cx: &mut gpui::TestAppContext) {
11922        init_test(cx);
11923        let fs = FakeFs::new(cx.executor());
11924
11925        let project = Project::test(fs, [], cx).await;
11926        let (workspace, cx) =
11927            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
11928        workspace.update_in(cx, |workspace, window, cx| {
11929            // Open two docks
11930            let left_dock = workspace.dock_at_position(DockPosition::Left);
11931            let right_dock = workspace.dock_at_position(DockPosition::Right);
11932
11933            left_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
11934            right_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
11935
11936            assert!(left_dock.read(cx).is_open());
11937            assert!(right_dock.read(cx).is_open());
11938        });
11939
11940        workspace.update_in(cx, |workspace, window, cx| {
11941            // Close them manually
11942            workspace.toggle_dock(DockPosition::Left, window, cx);
11943            workspace.toggle_dock(DockPosition::Right, window, cx);
11944
11945            let left_dock = workspace.dock_at_position(DockPosition::Left);
11946            let right_dock = workspace.dock_at_position(DockPosition::Right);
11947            assert!(!left_dock.read(cx).is_open());
11948            assert!(!right_dock.read(cx).is_open());
11949        });
11950
11951        workspace.update_in(cx, |workspace, window, cx| {
11952            // Toggle all docks - only last closed (right dock) should reopen
11953            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
11954
11955            let left_dock = workspace.dock_at_position(DockPosition::Left);
11956            let right_dock = workspace.dock_at_position(DockPosition::Right);
11957            assert!(!left_dock.read(cx).is_open());
11958            assert!(right_dock.read(cx).is_open());
11959        });
11960    }
11961
11962    #[gpui::test]
11963    async fn test_toggle_all_docks_after_dock_move(cx: &mut gpui::TestAppContext) {
11964        init_test(cx);
11965        let fs = FakeFs::new(cx.executor());
11966        let project = Project::test(fs, [], cx).await;
11967        let (multi_workspace, cx) =
11968            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
11969        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
11970
11971        // Open two docks (left and right) with one panel each
11972        let (left_panel, right_panel) = workspace.update_in(cx, |workspace, window, cx| {
11973            let left_panel = cx.new(|cx| TestPanel::new(DockPosition::Left, 100, cx));
11974            workspace.add_panel(left_panel.clone(), window, cx);
11975
11976            let right_panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 101, cx));
11977            workspace.add_panel(right_panel.clone(), window, cx);
11978
11979            workspace.toggle_dock(DockPosition::Left, window, cx);
11980            workspace.toggle_dock(DockPosition::Right, window, cx);
11981
11982            // Verify initial state
11983            assert!(
11984                workspace.left_dock().read(cx).is_open(),
11985                "Left dock should be open"
11986            );
11987            assert_eq!(
11988                workspace
11989                    .left_dock()
11990                    .read(cx)
11991                    .visible_panel()
11992                    .unwrap()
11993                    .panel_id(),
11994                left_panel.panel_id(),
11995                "Left panel should be visible in left dock"
11996            );
11997            assert!(
11998                workspace.right_dock().read(cx).is_open(),
11999                "Right dock should be open"
12000            );
12001            assert_eq!(
12002                workspace
12003                    .right_dock()
12004                    .read(cx)
12005                    .visible_panel()
12006                    .unwrap()
12007                    .panel_id(),
12008                right_panel.panel_id(),
12009                "Right panel should be visible in right dock"
12010            );
12011            assert!(
12012                !workspace.bottom_dock().read(cx).is_open(),
12013                "Bottom dock should be closed"
12014            );
12015
12016            (left_panel, right_panel)
12017        });
12018
12019        // Focus the left panel and move it to the next position (bottom dock)
12020        workspace.update_in(cx, |workspace, window, cx| {
12021            workspace.toggle_panel_focus::<TestPanel>(window, cx); // Focus left panel
12022            assert!(
12023                left_panel.read(cx).focus_handle(cx).is_focused(window),
12024                "Left panel should be focused"
12025            );
12026        });
12027
12028        cx.dispatch_action(MoveFocusedPanelToNextPosition);
12029
12030        // Verify the left panel has moved to the bottom dock, and the bottom dock is now open
12031        workspace.update(cx, |workspace, cx| {
12032            assert!(
12033                !workspace.left_dock().read(cx).is_open(),
12034                "Left dock should be closed"
12035            );
12036            assert!(
12037                workspace.bottom_dock().read(cx).is_open(),
12038                "Bottom dock should now be open"
12039            );
12040            assert_eq!(
12041                left_panel.read(cx).position,
12042                DockPosition::Bottom,
12043                "Left panel should now be in the bottom dock"
12044            );
12045            assert_eq!(
12046                workspace
12047                    .bottom_dock()
12048                    .read(cx)
12049                    .visible_panel()
12050                    .unwrap()
12051                    .panel_id(),
12052                left_panel.panel_id(),
12053                "Left panel should be the visible panel in the bottom dock"
12054            );
12055        });
12056
12057        // Toggle all docks off
12058        workspace.update_in(cx, |workspace, window, cx| {
12059            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
12060            assert!(
12061                !workspace.left_dock().read(cx).is_open(),
12062                "Left dock should be closed"
12063            );
12064            assert!(
12065                !workspace.right_dock().read(cx).is_open(),
12066                "Right dock should be closed"
12067            );
12068            assert!(
12069                !workspace.bottom_dock().read(cx).is_open(),
12070                "Bottom dock should be closed"
12071            );
12072        });
12073
12074        // Toggle all docks back on and verify positions are restored
12075        workspace.update_in(cx, |workspace, window, cx| {
12076            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
12077            assert!(
12078                !workspace.left_dock().read(cx).is_open(),
12079                "Left dock should remain closed"
12080            );
12081            assert!(
12082                workspace.right_dock().read(cx).is_open(),
12083                "Right dock should remain open"
12084            );
12085            assert!(
12086                workspace.bottom_dock().read(cx).is_open(),
12087                "Bottom dock should remain open"
12088            );
12089            assert_eq!(
12090                left_panel.read(cx).position,
12091                DockPosition::Bottom,
12092                "Left panel should remain in the bottom dock"
12093            );
12094            assert_eq!(
12095                right_panel.read(cx).position,
12096                DockPosition::Right,
12097                "Right panel should remain in the right dock"
12098            );
12099            assert_eq!(
12100                workspace
12101                    .bottom_dock()
12102                    .read(cx)
12103                    .visible_panel()
12104                    .unwrap()
12105                    .panel_id(),
12106                left_panel.panel_id(),
12107                "Left panel should be the visible panel in the right dock"
12108            );
12109        });
12110    }
12111
12112    #[gpui::test]
12113    async fn test_join_pane_into_next(cx: &mut gpui::TestAppContext) {
12114        init_test(cx);
12115
12116        let fs = FakeFs::new(cx.executor());
12117
12118        let project = Project::test(fs, None, cx).await;
12119        let (workspace, cx) =
12120            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
12121
12122        // Let's arrange the panes like this:
12123        //
12124        // +-----------------------+
12125        // |         top           |
12126        // +------+--------+-------+
12127        // | left | center | right |
12128        // +------+--------+-------+
12129        // |        bottom         |
12130        // +-----------------------+
12131
12132        let top_item = cx.new(|cx| {
12133            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "top.txt", cx)])
12134        });
12135        let bottom_item = cx.new(|cx| {
12136            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "bottom.txt", cx)])
12137        });
12138        let left_item = cx.new(|cx| {
12139            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "left.txt", cx)])
12140        });
12141        let right_item = cx.new(|cx| {
12142            TestItem::new(cx).with_project_items(&[TestProjectItem::new(4, "right.txt", cx)])
12143        });
12144        let center_item = cx.new(|cx| {
12145            TestItem::new(cx).with_project_items(&[TestProjectItem::new(5, "center.txt", cx)])
12146        });
12147
12148        let top_pane_id = workspace.update_in(cx, |workspace, window, cx| {
12149            let top_pane_id = workspace.active_pane().entity_id();
12150            workspace.add_item_to_active_pane(Box::new(top_item.clone()), None, false, window, cx);
12151            workspace.split_pane(
12152                workspace.active_pane().clone(),
12153                SplitDirection::Down,
12154                window,
12155                cx,
12156            );
12157            top_pane_id
12158        });
12159        let bottom_pane_id = workspace.update_in(cx, |workspace, window, cx| {
12160            let bottom_pane_id = workspace.active_pane().entity_id();
12161            workspace.add_item_to_active_pane(
12162                Box::new(bottom_item.clone()),
12163                None,
12164                false,
12165                window,
12166                cx,
12167            );
12168            workspace.split_pane(
12169                workspace.active_pane().clone(),
12170                SplitDirection::Up,
12171                window,
12172                cx,
12173            );
12174            bottom_pane_id
12175        });
12176        let left_pane_id = workspace.update_in(cx, |workspace, window, cx| {
12177            let left_pane_id = workspace.active_pane().entity_id();
12178            workspace.add_item_to_active_pane(Box::new(left_item.clone()), None, false, window, cx);
12179            workspace.split_pane(
12180                workspace.active_pane().clone(),
12181                SplitDirection::Right,
12182                window,
12183                cx,
12184            );
12185            left_pane_id
12186        });
12187        let right_pane_id = workspace.update_in(cx, |workspace, window, cx| {
12188            let right_pane_id = workspace.active_pane().entity_id();
12189            workspace.add_item_to_active_pane(
12190                Box::new(right_item.clone()),
12191                None,
12192                false,
12193                window,
12194                cx,
12195            );
12196            workspace.split_pane(
12197                workspace.active_pane().clone(),
12198                SplitDirection::Left,
12199                window,
12200                cx,
12201            );
12202            right_pane_id
12203        });
12204        let center_pane_id = workspace.update_in(cx, |workspace, window, cx| {
12205            let center_pane_id = workspace.active_pane().entity_id();
12206            workspace.add_item_to_active_pane(
12207                Box::new(center_item.clone()),
12208                None,
12209                false,
12210                window,
12211                cx,
12212            );
12213            center_pane_id
12214        });
12215        cx.executor().run_until_parked();
12216
12217        workspace.update_in(cx, |workspace, window, cx| {
12218            assert_eq!(center_pane_id, workspace.active_pane().entity_id());
12219
12220            // Join into next from center pane into right
12221            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
12222        });
12223
12224        workspace.update_in(cx, |workspace, window, cx| {
12225            let active_pane = workspace.active_pane();
12226            assert_eq!(right_pane_id, active_pane.entity_id());
12227            assert_eq!(2, active_pane.read(cx).items_len());
12228            let item_ids_in_pane =
12229                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
12230            assert!(item_ids_in_pane.contains(&center_item.item_id()));
12231            assert!(item_ids_in_pane.contains(&right_item.item_id()));
12232
12233            // Join into next from right pane into bottom
12234            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
12235        });
12236
12237        workspace.update_in(cx, |workspace, window, cx| {
12238            let active_pane = workspace.active_pane();
12239            assert_eq!(bottom_pane_id, active_pane.entity_id());
12240            assert_eq!(3, active_pane.read(cx).items_len());
12241            let item_ids_in_pane =
12242                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
12243            assert!(item_ids_in_pane.contains(&center_item.item_id()));
12244            assert!(item_ids_in_pane.contains(&right_item.item_id()));
12245            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
12246
12247            // Join into next from bottom pane into left
12248            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
12249        });
12250
12251        workspace.update_in(cx, |workspace, window, cx| {
12252            let active_pane = workspace.active_pane();
12253            assert_eq!(left_pane_id, active_pane.entity_id());
12254            assert_eq!(4, active_pane.read(cx).items_len());
12255            let item_ids_in_pane =
12256                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
12257            assert!(item_ids_in_pane.contains(&center_item.item_id()));
12258            assert!(item_ids_in_pane.contains(&right_item.item_id()));
12259            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
12260            assert!(item_ids_in_pane.contains(&left_item.item_id()));
12261
12262            // Join into next from left pane into top
12263            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
12264        });
12265
12266        workspace.update_in(cx, |workspace, window, cx| {
12267            let active_pane = workspace.active_pane();
12268            assert_eq!(top_pane_id, active_pane.entity_id());
12269            assert_eq!(5, active_pane.read(cx).items_len());
12270            let item_ids_in_pane =
12271                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
12272            assert!(item_ids_in_pane.contains(&center_item.item_id()));
12273            assert!(item_ids_in_pane.contains(&right_item.item_id()));
12274            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
12275            assert!(item_ids_in_pane.contains(&left_item.item_id()));
12276            assert!(item_ids_in_pane.contains(&top_item.item_id()));
12277
12278            // Single pane left: no-op
12279            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx)
12280        });
12281
12282        workspace.update(cx, |workspace, _cx| {
12283            let active_pane = workspace.active_pane();
12284            assert_eq!(top_pane_id, active_pane.entity_id());
12285        });
12286    }
12287
12288    fn add_an_item_to_active_pane(
12289        cx: &mut VisualTestContext,
12290        workspace: &Entity<Workspace>,
12291        item_id: u64,
12292    ) -> Entity<TestItem> {
12293        let item = cx.new(|cx| {
12294            TestItem::new(cx).with_project_items(&[TestProjectItem::new(
12295                item_id,
12296                "item{item_id}.txt",
12297                cx,
12298            )])
12299        });
12300        workspace.update_in(cx, |workspace, window, cx| {
12301            workspace.add_item_to_active_pane(Box::new(item.clone()), None, false, window, cx);
12302        });
12303        item
12304    }
12305
12306    fn split_pane(cx: &mut VisualTestContext, workspace: &Entity<Workspace>) -> Entity<Pane> {
12307        workspace.update_in(cx, |workspace, window, cx| {
12308            workspace.split_pane(
12309                workspace.active_pane().clone(),
12310                SplitDirection::Right,
12311                window,
12312                cx,
12313            )
12314        })
12315    }
12316
12317    #[gpui::test]
12318    async fn test_join_all_panes(cx: &mut gpui::TestAppContext) {
12319        init_test(cx);
12320        let fs = FakeFs::new(cx.executor());
12321        let project = Project::test(fs, None, cx).await;
12322        let (workspace, cx) =
12323            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
12324
12325        add_an_item_to_active_pane(cx, &workspace, 1);
12326        split_pane(cx, &workspace);
12327        add_an_item_to_active_pane(cx, &workspace, 2);
12328        split_pane(cx, &workspace); // empty pane
12329        split_pane(cx, &workspace);
12330        let last_item = add_an_item_to_active_pane(cx, &workspace, 3);
12331
12332        cx.executor().run_until_parked();
12333
12334        workspace.update(cx, |workspace, cx| {
12335            let num_panes = workspace.panes().len();
12336            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
12337            let active_item = workspace
12338                .active_pane()
12339                .read(cx)
12340                .active_item()
12341                .expect("item is in focus");
12342
12343            assert_eq!(num_panes, 4);
12344            assert_eq!(num_items_in_current_pane, 1);
12345            assert_eq!(active_item.item_id(), last_item.item_id());
12346        });
12347
12348        workspace.update_in(cx, |workspace, window, cx| {
12349            workspace.join_all_panes(window, cx);
12350        });
12351
12352        workspace.update(cx, |workspace, cx| {
12353            let num_panes = workspace.panes().len();
12354            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
12355            let active_item = workspace
12356                .active_pane()
12357                .read(cx)
12358                .active_item()
12359                .expect("item is in focus");
12360
12361            assert_eq!(num_panes, 1);
12362            assert_eq!(num_items_in_current_pane, 3);
12363            assert_eq!(active_item.item_id(), last_item.item_id());
12364        });
12365    }
12366
12367    #[gpui::test]
12368    async fn test_flexible_dock_sizing(cx: &mut gpui::TestAppContext) {
12369        init_test(cx);
12370        let fs = FakeFs::new(cx.executor());
12371
12372        let project = Project::test(fs, [], cx).await;
12373        let (multi_workspace, cx) =
12374            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
12375        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
12376
12377        workspace.update(cx, |workspace, _cx| {
12378            workspace.bounds.size.width = px(800.);
12379        });
12380
12381        workspace.update_in(cx, |workspace, window, cx| {
12382            let panel = cx.new(|cx| TestPanel::new_flexible(DockPosition::Right, 100, cx));
12383            workspace.add_panel(panel, window, cx);
12384            workspace.toggle_dock(DockPosition::Right, window, cx);
12385        });
12386
12387        let (panel, resized_width, ratio_basis_width) =
12388            workspace.update_in(cx, |workspace, window, cx| {
12389                let item = cx.new(|cx| {
12390                    TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
12391                });
12392                workspace.add_item_to_active_pane(Box::new(item), None, true, window, cx);
12393
12394                let dock = workspace.right_dock().read(cx);
12395                let workspace_width = workspace.bounds.size.width;
12396                let initial_width = workspace
12397                    .dock_size(&dock, window, cx)
12398                    .expect("flexible dock should have an initial width");
12399
12400                assert_eq!(initial_width, workspace_width / 2.);
12401
12402                workspace.resize_right_dock(px(300.), window, cx);
12403
12404                let dock = workspace.right_dock().read(cx);
12405                let resized_width = workspace
12406                    .dock_size(&dock, window, cx)
12407                    .expect("flexible dock should keep its resized width");
12408
12409                assert_eq!(resized_width, px(300.));
12410
12411                let panel = workspace
12412                    .right_dock()
12413                    .read(cx)
12414                    .visible_panel()
12415                    .expect("flexible dock should have a visible panel")
12416                    .panel_id();
12417
12418                (panel, resized_width, workspace_width)
12419            });
12420
12421        workspace.update_in(cx, |workspace, window, cx| {
12422            workspace.toggle_dock(DockPosition::Right, window, cx);
12423            workspace.toggle_dock(DockPosition::Right, window, cx);
12424
12425            let dock = workspace.right_dock().read(cx);
12426            let reopened_width = workspace
12427                .dock_size(&dock, window, cx)
12428                .expect("flexible dock should restore when reopened");
12429
12430            assert_eq!(reopened_width, resized_width);
12431
12432            let right_dock = workspace.right_dock().read(cx);
12433            let flexible_panel = right_dock
12434                .visible_panel()
12435                .expect("flexible dock should still have a visible panel");
12436            assert_eq!(flexible_panel.panel_id(), panel);
12437            assert_eq!(
12438                right_dock
12439                    .stored_panel_size_state(flexible_panel.as_ref())
12440                    .and_then(|size_state| size_state.flex),
12441                Some(
12442                    resized_width.to_f64() as f32
12443                        / (workspace.bounds.size.width - resized_width).to_f64() as f32
12444                )
12445            );
12446        });
12447
12448        workspace.update_in(cx, |workspace, window, cx| {
12449            workspace.split_pane(
12450                workspace.active_pane().clone(),
12451                SplitDirection::Right,
12452                window,
12453                cx,
12454            );
12455
12456            let dock = workspace.right_dock().read(cx);
12457            let split_width = workspace
12458                .dock_size(&dock, window, cx)
12459                .expect("flexible dock should keep its user-resized proportion");
12460
12461            assert_eq!(split_width, px(300.));
12462
12463            workspace.bounds.size.width = px(1600.);
12464
12465            let dock = workspace.right_dock().read(cx);
12466            let resized_window_width = workspace
12467                .dock_size(&dock, window, cx)
12468                .expect("flexible dock should preserve proportional size on window resize");
12469
12470            assert_eq!(
12471                resized_window_width,
12472                workspace.bounds.size.width
12473                    * (resized_width.to_f64() as f32 / ratio_basis_width.to_f64() as f32)
12474            );
12475        });
12476    }
12477
12478    #[gpui::test]
12479    async fn test_panel_size_state_persistence(cx: &mut gpui::TestAppContext) {
12480        init_test(cx);
12481        let fs = FakeFs::new(cx.executor());
12482
12483        // Fixed-width panel: pixel size is persisted to KVP and restored on re-add.
12484        {
12485            let project = Project::test(fs.clone(), [], cx).await;
12486            let (multi_workspace, cx) =
12487                cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
12488            let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
12489
12490            workspace.update(cx, |workspace, _cx| {
12491                workspace.set_random_database_id();
12492                workspace.bounds.size.width = px(800.);
12493            });
12494
12495            let panel = workspace.update_in(cx, |workspace, window, cx| {
12496                let panel = cx.new(|cx| TestPanel::new(DockPosition::Left, 100, cx));
12497                workspace.add_panel(panel.clone(), window, cx);
12498                workspace.toggle_dock(DockPosition::Left, window, cx);
12499                panel
12500            });
12501
12502            workspace.update_in(cx, |workspace, window, cx| {
12503                workspace.resize_left_dock(px(350.), window, cx);
12504            });
12505
12506            cx.run_until_parked();
12507
12508            let persisted = workspace.read_with(cx, |workspace, cx| {
12509                workspace.persisted_panel_size_state(TestPanel::panel_key(), cx)
12510            });
12511            assert_eq!(
12512                persisted.and_then(|s| s.size),
12513                Some(px(350.)),
12514                "fixed-width panel size should be persisted to KVP"
12515            );
12516
12517            // Remove the panel and re-add a fresh instance with the same key.
12518            // The new instance should have its size state restored from KVP.
12519            workspace.update_in(cx, |workspace, window, cx| {
12520                workspace.remove_panel(&panel, window, cx);
12521            });
12522
12523            workspace.update_in(cx, |workspace, window, cx| {
12524                let new_panel = cx.new(|cx| TestPanel::new(DockPosition::Left, 100, cx));
12525                workspace.add_panel(new_panel, window, cx);
12526
12527                let left_dock = workspace.left_dock().read(cx);
12528                let size_state = left_dock
12529                    .panel::<TestPanel>()
12530                    .and_then(|p| left_dock.stored_panel_size_state(&p));
12531                assert_eq!(
12532                    size_state.and_then(|s| s.size),
12533                    Some(px(350.)),
12534                    "re-added fixed-width panel should restore persisted size from KVP"
12535                );
12536            });
12537        }
12538
12539        // Flexible panel: both pixel size and ratio are persisted and restored.
12540        {
12541            let project = Project::test(fs.clone(), [], cx).await;
12542            let (multi_workspace, cx) =
12543                cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
12544            let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
12545
12546            workspace.update(cx, |workspace, _cx| {
12547                workspace.set_random_database_id();
12548                workspace.bounds.size.width = px(800.);
12549            });
12550
12551            let panel = workspace.update_in(cx, |workspace, window, cx| {
12552                let item = cx.new(|cx| {
12553                    TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
12554                });
12555                workspace.add_item_to_active_pane(Box::new(item), None, true, window, cx);
12556
12557                let panel = cx.new(|cx| TestPanel::new_flexible(DockPosition::Right, 100, cx));
12558                workspace.add_panel(panel.clone(), window, cx);
12559                workspace.toggle_dock(DockPosition::Right, window, cx);
12560                panel
12561            });
12562
12563            workspace.update_in(cx, |workspace, window, cx| {
12564                workspace.resize_right_dock(px(300.), window, cx);
12565            });
12566
12567            cx.run_until_parked();
12568
12569            let persisted = workspace
12570                .read_with(cx, |workspace, cx| {
12571                    workspace.persisted_panel_size_state(TestPanel::panel_key(), cx)
12572                })
12573                .expect("flexible panel state should be persisted to KVP");
12574            assert_eq!(
12575                persisted.size, None,
12576                "flexible panel should not persist a redundant pixel size"
12577            );
12578            let original_ratio = persisted.flex.expect("panel's flex should be persisted");
12579
12580            // Remove the panel and re-add: both size and ratio should be restored.
12581            workspace.update_in(cx, |workspace, window, cx| {
12582                workspace.remove_panel(&panel, window, cx);
12583            });
12584
12585            workspace.update_in(cx, |workspace, window, cx| {
12586                let new_panel = cx.new(|cx| TestPanel::new_flexible(DockPosition::Right, 100, cx));
12587                workspace.add_panel(new_panel, window, cx);
12588
12589                let right_dock = workspace.right_dock().read(cx);
12590                let size_state = right_dock
12591                    .panel::<TestPanel>()
12592                    .and_then(|p| right_dock.stored_panel_size_state(&p))
12593                    .expect("re-added flexible panel should have restored size state from KVP");
12594                assert_eq!(
12595                    size_state.size, None,
12596                    "re-added flexible panel should not have a persisted pixel size"
12597                );
12598                assert_eq!(
12599                    size_state.flex,
12600                    Some(original_ratio),
12601                    "re-added flexible panel should restore persisted flex"
12602                );
12603            });
12604        }
12605    }
12606
12607    #[gpui::test]
12608    async fn test_flexible_panel_left_dock_sizing(cx: &mut gpui::TestAppContext) {
12609        init_test(cx);
12610        let fs = FakeFs::new(cx.executor());
12611
12612        let project = Project::test(fs, [], cx).await;
12613        let (multi_workspace, cx) =
12614            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
12615        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
12616
12617        workspace.update(cx, |workspace, _cx| {
12618            workspace.bounds.size.width = px(900.);
12619        });
12620
12621        // Step 1: Add a tab to the center pane then open a flexible panel in the left
12622        // dock. With one full-width center pane the default ratio is 0.5, so the panel
12623        // and the center pane each take half the workspace width.
12624        workspace.update_in(cx, |workspace, window, cx| {
12625            let item = cx.new(|cx| {
12626                TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
12627            });
12628            workspace.add_item_to_active_pane(Box::new(item), None, true, window, cx);
12629
12630            let panel = cx.new(|cx| TestPanel::new_flexible(DockPosition::Left, 100, cx));
12631            workspace.add_panel(panel, window, cx);
12632            workspace.toggle_dock(DockPosition::Left, window, cx);
12633
12634            let left_dock = workspace.left_dock().read(cx);
12635            let left_width = workspace
12636                .dock_size(&left_dock, window, cx)
12637                .expect("left dock should have an active panel");
12638
12639            assert_eq!(
12640                left_width,
12641                workspace.bounds.size.width / 2.,
12642                "flexible left panel should split evenly with the center pane"
12643            );
12644        });
12645
12646        // Step 2: Split the center pane vertically (top/bottom). Vertical splits do not
12647        // change horizontal width fractions, so the flexible panel stays at the same
12648        // width as each half of the split.
12649        workspace.update_in(cx, |workspace, window, cx| {
12650            workspace.split_pane(
12651                workspace.active_pane().clone(),
12652                SplitDirection::Down,
12653                window,
12654                cx,
12655            );
12656
12657            let left_dock = workspace.left_dock().read(cx);
12658            let left_width = workspace
12659                .dock_size(&left_dock, window, cx)
12660                .expect("left dock should still have an active panel after vertical split");
12661
12662            assert_eq!(
12663                left_width,
12664                workspace.bounds.size.width / 2.,
12665                "flexible left panel width should match each vertically-split pane"
12666            );
12667        });
12668
12669        // Step 3: Open a fixed-width panel in the right dock. The right dock's default
12670        // size reduces the available width, so the flexible left panel and the center
12671        // panes all shrink proportionally to accommodate it.
12672        workspace.update_in(cx, |workspace, window, cx| {
12673            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 200, cx));
12674            workspace.add_panel(panel, window, cx);
12675            workspace.toggle_dock(DockPosition::Right, window, cx);
12676
12677            let right_dock = workspace.right_dock().read(cx);
12678            let right_width = workspace
12679                .dock_size(&right_dock, window, cx)
12680                .expect("right dock should have an active panel");
12681
12682            let left_dock = workspace.left_dock().read(cx);
12683            let left_width = workspace
12684                .dock_size(&left_dock, window, cx)
12685                .expect("left dock should still have an active panel");
12686
12687            let available_width = workspace.bounds.size.width - right_width;
12688            assert_eq!(
12689                left_width,
12690                available_width / 2.,
12691                "flexible left panel should shrink proportionally as the right dock takes space"
12692            );
12693        });
12694
12695        // Step 4: Toggle the right dock's panel to flexible. Now both docks use
12696        // flex sizing and the workspace width is divided among left-flex, center
12697        // (implicit flex 1.0), and right-flex.
12698        workspace.update_in(cx, |workspace, window, cx| {
12699            let right_dock = workspace.right_dock().clone();
12700            let right_panel = right_dock
12701                .read(cx)
12702                .visible_panel()
12703                .expect("right dock should have a visible panel")
12704                .clone();
12705            workspace.toggle_dock_panel_flexible_size(
12706                &right_dock,
12707                right_panel.as_ref(),
12708                window,
12709                cx,
12710            );
12711
12712            let right_dock = right_dock.read(cx);
12713            let right_panel = right_dock
12714                .visible_panel()
12715                .expect("right dock should still have a visible panel");
12716            assert!(
12717                right_panel.has_flexible_size(window, cx),
12718                "right panel should now be flexible"
12719            );
12720
12721            let right_size_state = right_dock
12722                .stored_panel_size_state(right_panel.as_ref())
12723                .expect("right panel should have a stored size state after toggling");
12724            let right_flex = right_size_state
12725                .flex
12726                .expect("right panel should have a flex value after toggling");
12727
12728            let left_dock = workspace.left_dock().read(cx);
12729            let left_width = workspace
12730                .dock_size(&left_dock, window, cx)
12731                .expect("left dock should still have an active panel");
12732            let right_width = workspace
12733                .dock_size(&right_dock, window, cx)
12734                .expect("right dock should still have an active panel");
12735
12736            let left_flex = workspace
12737                .default_dock_flex(DockPosition::Left)
12738                .expect("left dock should have a default flex");
12739
12740            let total_flex = left_flex + 1.0 + right_flex;
12741            let expected_left = left_flex / total_flex * workspace.bounds.size.width;
12742            let expected_right = right_flex / total_flex * workspace.bounds.size.width;
12743            assert_eq!(
12744                left_width, expected_left,
12745                "flexible left panel should share workspace width via flex ratios"
12746            );
12747            assert_eq!(
12748                right_width, expected_right,
12749                "flexible right panel should share workspace width via flex ratios"
12750            );
12751        });
12752    }
12753
12754    struct TestModal(FocusHandle);
12755
12756    impl TestModal {
12757        fn new(_: &mut Window, cx: &mut Context<Self>) -> Self {
12758            Self(cx.focus_handle())
12759        }
12760    }
12761
12762    impl EventEmitter<DismissEvent> for TestModal {}
12763
12764    impl Focusable for TestModal {
12765        fn focus_handle(&self, _cx: &App) -> FocusHandle {
12766            self.0.clone()
12767        }
12768    }
12769
12770    impl ModalView for TestModal {}
12771
12772    impl Render for TestModal {
12773        fn render(
12774            &mut self,
12775            _window: &mut Window,
12776            _cx: &mut Context<TestModal>,
12777        ) -> impl IntoElement {
12778            div().track_focus(&self.0)
12779        }
12780    }
12781
12782    #[gpui::test]
12783    async fn test_panels(cx: &mut gpui::TestAppContext) {
12784        init_test(cx);
12785        let fs = FakeFs::new(cx.executor());
12786
12787        let project = Project::test(fs, [], cx).await;
12788        let (multi_workspace, cx) =
12789            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
12790        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
12791
12792        let (panel_1, panel_2) = workspace.update_in(cx, |workspace, window, cx| {
12793            let panel_1 = cx.new(|cx| TestPanel::new(DockPosition::Left, 100, cx));
12794            workspace.add_panel(panel_1.clone(), window, cx);
12795            workspace.toggle_dock(DockPosition::Left, window, cx);
12796            let panel_2 = cx.new(|cx| TestPanel::new(DockPosition::Right, 101, cx));
12797            workspace.add_panel(panel_2.clone(), window, cx);
12798            workspace.toggle_dock(DockPosition::Right, window, cx);
12799
12800            let left_dock = workspace.left_dock();
12801            assert_eq!(
12802                left_dock.read(cx).visible_panel().unwrap().panel_id(),
12803                panel_1.panel_id()
12804            );
12805            assert_eq!(
12806                workspace.dock_size(&left_dock.read(cx), window, cx),
12807                Some(px(300.))
12808            );
12809
12810            workspace.resize_left_dock(px(1337.), window, cx);
12811            assert_eq!(
12812                workspace
12813                    .right_dock()
12814                    .read(cx)
12815                    .visible_panel()
12816                    .unwrap()
12817                    .panel_id(),
12818                panel_2.panel_id(),
12819            );
12820
12821            (panel_1, panel_2)
12822        });
12823
12824        // Move panel_1 to the right
12825        panel_1.update_in(cx, |panel_1, window, cx| {
12826            panel_1.set_position(DockPosition::Right, window, cx)
12827        });
12828
12829        workspace.update_in(cx, |workspace, window, cx| {
12830            // Since panel_1 was visible on the left, it should now be visible now that it's been moved to the right.
12831            // Since it was the only panel on the left, the left dock should now be closed.
12832            assert!(!workspace.left_dock().read(cx).is_open());
12833            assert!(workspace.left_dock().read(cx).visible_panel().is_none());
12834            let right_dock = workspace.right_dock();
12835            assert_eq!(
12836                right_dock.read(cx).visible_panel().unwrap().panel_id(),
12837                panel_1.panel_id()
12838            );
12839            assert_eq!(
12840                right_dock
12841                    .read(cx)
12842                    .active_panel_size()
12843                    .unwrap()
12844                    .size
12845                    .unwrap(),
12846                px(1337.)
12847            );
12848
12849            // Now we move panel_2 to the left
12850            panel_2.set_position(DockPosition::Left, window, cx);
12851        });
12852
12853        workspace.update(cx, |workspace, cx| {
12854            // Since panel_2 was not visible on the right, we don't open the left dock.
12855            assert!(!workspace.left_dock().read(cx).is_open());
12856            // And the right dock is unaffected in its displaying of panel_1
12857            assert!(workspace.right_dock().read(cx).is_open());
12858            assert_eq!(
12859                workspace
12860                    .right_dock()
12861                    .read(cx)
12862                    .visible_panel()
12863                    .unwrap()
12864                    .panel_id(),
12865                panel_1.panel_id(),
12866            );
12867        });
12868
12869        // Move panel_1 back to the left
12870        panel_1.update_in(cx, |panel_1, window, cx| {
12871            panel_1.set_position(DockPosition::Left, window, cx)
12872        });
12873
12874        workspace.update_in(cx, |workspace, window, cx| {
12875            // Since panel_1 was visible on the right, we open the left dock and make panel_1 active.
12876            let left_dock = workspace.left_dock();
12877            assert!(left_dock.read(cx).is_open());
12878            assert_eq!(
12879                left_dock.read(cx).visible_panel().unwrap().panel_id(),
12880                panel_1.panel_id()
12881            );
12882            assert_eq!(
12883                workspace.dock_size(&left_dock.read(cx), window, cx),
12884                Some(px(1337.))
12885            );
12886            // And the right dock should be closed as it no longer has any panels.
12887            assert!(!workspace.right_dock().read(cx).is_open());
12888
12889            // Now we move panel_1 to the bottom
12890            panel_1.set_position(DockPosition::Bottom, window, cx);
12891        });
12892
12893        workspace.update_in(cx, |workspace, window, cx| {
12894            // Since panel_1 was visible on the left, we close the left dock.
12895            assert!(!workspace.left_dock().read(cx).is_open());
12896            // The bottom dock is sized based on the panel's default size,
12897            // since the panel orientation changed from vertical to horizontal.
12898            let bottom_dock = workspace.bottom_dock();
12899            assert_eq!(
12900                workspace.dock_size(&bottom_dock.read(cx), window, cx),
12901                Some(px(300.))
12902            );
12903            // Close bottom dock and move panel_1 back to the left.
12904            bottom_dock.update(cx, |bottom_dock, cx| {
12905                bottom_dock.set_open(false, window, cx)
12906            });
12907            panel_1.set_position(DockPosition::Left, window, cx);
12908        });
12909
12910        // Emit activated event on panel 1
12911        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Activate));
12912
12913        // Now the left dock is open and panel_1 is active and focused.
12914        workspace.update_in(cx, |workspace, window, cx| {
12915            let left_dock = workspace.left_dock();
12916            assert!(left_dock.read(cx).is_open());
12917            assert_eq!(
12918                left_dock.read(cx).visible_panel().unwrap().panel_id(),
12919                panel_1.panel_id(),
12920            );
12921            assert!(panel_1.focus_handle(cx).is_focused(window));
12922        });
12923
12924        // Emit closed event on panel 2, which is not active
12925        panel_2.update(cx, |_, cx| cx.emit(PanelEvent::Close));
12926
12927        // Wo don't close the left dock, because panel_2 wasn't the active panel
12928        workspace.update(cx, |workspace, cx| {
12929            let left_dock = workspace.left_dock();
12930            assert!(left_dock.read(cx).is_open());
12931            assert_eq!(
12932                left_dock.read(cx).visible_panel().unwrap().panel_id(),
12933                panel_1.panel_id(),
12934            );
12935        });
12936
12937        // Emitting a ZoomIn event shows the panel as zoomed.
12938        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomIn));
12939        workspace.read_with(cx, |workspace, _| {
12940            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
12941            assert_eq!(workspace.zoomed_position, Some(DockPosition::Left));
12942        });
12943
12944        // Move panel to another dock while it is zoomed
12945        panel_1.update_in(cx, |panel, window, cx| {
12946            panel.set_position(DockPosition::Right, window, cx)
12947        });
12948        workspace.read_with(cx, |workspace, _| {
12949            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
12950
12951            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
12952        });
12953
12954        // This is a helper for getting a:
12955        // - valid focus on an element,
12956        // - that isn't a part of the panes and panels system of the Workspace,
12957        // - and doesn't trigger the 'on_focus_lost' API.
12958        let focus_other_view = {
12959            let workspace = workspace.clone();
12960            move |cx: &mut VisualTestContext| {
12961                workspace.update_in(cx, |workspace, window, cx| {
12962                    if workspace.active_modal::<TestModal>(cx).is_some() {
12963                        workspace.toggle_modal(window, cx, TestModal::new);
12964                        workspace.toggle_modal(window, cx, TestModal::new);
12965                    } else {
12966                        workspace.toggle_modal(window, cx, TestModal::new);
12967                    }
12968                })
12969            }
12970        };
12971
12972        // If focus is transferred to another view that's not a panel or another pane, we still show
12973        // the panel as zoomed.
12974        focus_other_view(cx);
12975        workspace.read_with(cx, |workspace, _| {
12976            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
12977            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
12978        });
12979
12980        // If focus is transferred elsewhere in the workspace, the panel is no longer zoomed.
12981        workspace.update_in(cx, |_workspace, window, cx| {
12982            cx.focus_self(window);
12983        });
12984        workspace.read_with(cx, |workspace, _| {
12985            assert_eq!(workspace.zoomed, None);
12986            assert_eq!(workspace.zoomed_position, None);
12987        });
12988
12989        // If focus is transferred again to another view that's not a panel or a pane, we won't
12990        // show the panel as zoomed because it wasn't zoomed before.
12991        focus_other_view(cx);
12992        workspace.read_with(cx, |workspace, _| {
12993            assert_eq!(workspace.zoomed, None);
12994            assert_eq!(workspace.zoomed_position, None);
12995        });
12996
12997        // When the panel is activated, it is zoomed again.
12998        cx.dispatch_action(ToggleRightDock);
12999        workspace.read_with(cx, |workspace, _| {
13000            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
13001            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
13002        });
13003
13004        // Emitting a ZoomOut event unzooms the panel.
13005        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomOut));
13006        workspace.read_with(cx, |workspace, _| {
13007            assert_eq!(workspace.zoomed, None);
13008            assert_eq!(workspace.zoomed_position, None);
13009        });
13010
13011        // Emit closed event on panel 1, which is active
13012        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Close));
13013
13014        // Now the left dock is closed, because panel_1 was the active panel
13015        workspace.update(cx, |workspace, cx| {
13016            let right_dock = workspace.right_dock();
13017            assert!(!right_dock.read(cx).is_open());
13018        });
13019    }
13020
13021    #[gpui::test]
13022    async fn test_no_save_prompt_when_multi_buffer_dirty_items_closed(cx: &mut TestAppContext) {
13023        init_test(cx);
13024
13025        let fs = FakeFs::new(cx.background_executor.clone());
13026        let project = Project::test(fs, [], cx).await;
13027        let (workspace, cx) =
13028            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13029        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13030
13031        let dirty_regular_buffer = cx.new(|cx| {
13032            TestItem::new(cx)
13033                .with_dirty(true)
13034                .with_label("1.txt")
13035                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
13036        });
13037        let dirty_regular_buffer_2 = cx.new(|cx| {
13038            TestItem::new(cx)
13039                .with_dirty(true)
13040                .with_label("2.txt")
13041                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
13042        });
13043        let dirty_multi_buffer_with_both = cx.new(|cx| {
13044            TestItem::new(cx)
13045                .with_dirty(true)
13046                .with_buffer_kind(ItemBufferKind::Multibuffer)
13047                .with_label("Fake Project Search")
13048                .with_project_items(&[
13049                    dirty_regular_buffer.read(cx).project_items[0].clone(),
13050                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
13051                ])
13052        });
13053        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
13054        workspace.update_in(cx, |workspace, window, cx| {
13055            workspace.add_item(
13056                pane.clone(),
13057                Box::new(dirty_regular_buffer.clone()),
13058                None,
13059                false,
13060                false,
13061                window,
13062                cx,
13063            );
13064            workspace.add_item(
13065                pane.clone(),
13066                Box::new(dirty_regular_buffer_2.clone()),
13067                None,
13068                false,
13069                false,
13070                window,
13071                cx,
13072            );
13073            workspace.add_item(
13074                pane.clone(),
13075                Box::new(dirty_multi_buffer_with_both.clone()),
13076                None,
13077                false,
13078                false,
13079                window,
13080                cx,
13081            );
13082        });
13083
13084        pane.update_in(cx, |pane, window, cx| {
13085            pane.activate_item(2, true, true, window, cx);
13086            assert_eq!(
13087                pane.active_item().unwrap().item_id(),
13088                multi_buffer_with_both_files_id,
13089                "Should select the multi buffer in the pane"
13090            );
13091        });
13092        let close_all_but_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
13093            pane.close_other_items(
13094                &CloseOtherItems {
13095                    save_intent: Some(SaveIntent::Save),
13096                    close_pinned: true,
13097                },
13098                None,
13099                window,
13100                cx,
13101            )
13102        });
13103        cx.background_executor.run_until_parked();
13104        assert!(!cx.has_pending_prompt());
13105        close_all_but_multi_buffer_task
13106            .await
13107            .expect("Closing all buffers but the multi buffer failed");
13108        pane.update(cx, |pane, cx| {
13109            assert_eq!(dirty_regular_buffer.read(cx).save_count, 1);
13110            assert_eq!(dirty_multi_buffer_with_both.read(cx).save_count, 0);
13111            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 1);
13112            assert_eq!(pane.items_len(), 1);
13113            assert_eq!(
13114                pane.active_item().unwrap().item_id(),
13115                multi_buffer_with_both_files_id,
13116                "Should have only the multi buffer left in the pane"
13117            );
13118            assert!(
13119                dirty_multi_buffer_with_both.read(cx).is_dirty,
13120                "The multi buffer containing the unsaved buffer should still be dirty"
13121            );
13122        });
13123
13124        dirty_regular_buffer.update(cx, |buffer, cx| {
13125            buffer.project_items[0].update(cx, |pi, _| pi.is_dirty = true)
13126        });
13127
13128        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
13129            pane.close_active_item(
13130                &CloseActiveItem {
13131                    save_intent: Some(SaveIntent::Close),
13132                    close_pinned: false,
13133                },
13134                window,
13135                cx,
13136            )
13137        });
13138        cx.background_executor.run_until_parked();
13139        assert!(
13140            cx.has_pending_prompt(),
13141            "Dirty multi buffer should prompt a save dialog"
13142        );
13143        cx.simulate_prompt_answer("Save");
13144        cx.background_executor.run_until_parked();
13145        close_multi_buffer_task
13146            .await
13147            .expect("Closing the multi buffer failed");
13148        pane.update(cx, |pane, cx| {
13149            assert_eq!(
13150                dirty_multi_buffer_with_both.read(cx).save_count,
13151                1,
13152                "Multi buffer item should get be saved"
13153            );
13154            // Test impl does not save inner items, so we do not assert them
13155            assert_eq!(
13156                pane.items_len(),
13157                0,
13158                "No more items should be left in the pane"
13159            );
13160            assert!(pane.active_item().is_none());
13161        });
13162    }
13163
13164    #[gpui::test]
13165    async fn test_save_prompt_when_dirty_multi_buffer_closed_with_some_of_its_dirty_items_not_present_in_the_pane(
13166        cx: &mut TestAppContext,
13167    ) {
13168        init_test(cx);
13169
13170        let fs = FakeFs::new(cx.background_executor.clone());
13171        let project = Project::test(fs, [], cx).await;
13172        let (workspace, cx) =
13173            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13174        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13175
13176        let dirty_regular_buffer = cx.new(|cx| {
13177            TestItem::new(cx)
13178                .with_dirty(true)
13179                .with_label("1.txt")
13180                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
13181        });
13182        let dirty_regular_buffer_2 = cx.new(|cx| {
13183            TestItem::new(cx)
13184                .with_dirty(true)
13185                .with_label("2.txt")
13186                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
13187        });
13188        let clear_regular_buffer = cx.new(|cx| {
13189            TestItem::new(cx)
13190                .with_label("3.txt")
13191                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
13192        });
13193
13194        let dirty_multi_buffer_with_both = cx.new(|cx| {
13195            TestItem::new(cx)
13196                .with_dirty(true)
13197                .with_buffer_kind(ItemBufferKind::Multibuffer)
13198                .with_label("Fake Project Search")
13199                .with_project_items(&[
13200                    dirty_regular_buffer.read(cx).project_items[0].clone(),
13201                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
13202                    clear_regular_buffer.read(cx).project_items[0].clone(),
13203                ])
13204        });
13205        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
13206        workspace.update_in(cx, |workspace, window, cx| {
13207            workspace.add_item(
13208                pane.clone(),
13209                Box::new(dirty_regular_buffer.clone()),
13210                None,
13211                false,
13212                false,
13213                window,
13214                cx,
13215            );
13216            workspace.add_item(
13217                pane.clone(),
13218                Box::new(dirty_multi_buffer_with_both.clone()),
13219                None,
13220                false,
13221                false,
13222                window,
13223                cx,
13224            );
13225        });
13226
13227        pane.update_in(cx, |pane, window, cx| {
13228            pane.activate_item(1, true, true, window, cx);
13229            assert_eq!(
13230                pane.active_item().unwrap().item_id(),
13231                multi_buffer_with_both_files_id,
13232                "Should select the multi buffer in the pane"
13233            );
13234        });
13235        let _close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
13236            pane.close_active_item(
13237                &CloseActiveItem {
13238                    save_intent: None,
13239                    close_pinned: false,
13240                },
13241                window,
13242                cx,
13243            )
13244        });
13245        cx.background_executor.run_until_parked();
13246        assert!(
13247            cx.has_pending_prompt(),
13248            "With one dirty item from the multi buffer not being in the pane, a save prompt should be shown"
13249        );
13250    }
13251
13252    /// Tests that when `close_on_file_delete` is enabled, files are automatically
13253    /// closed when they are deleted from disk.
13254    #[gpui::test]
13255    async fn test_close_on_disk_deletion_enabled(cx: &mut TestAppContext) {
13256        init_test(cx);
13257
13258        // Enable the close_on_disk_deletion setting
13259        cx.update_global(|store: &mut SettingsStore, cx| {
13260            store.update_user_settings(cx, |settings| {
13261                settings.workspace.close_on_file_delete = Some(true);
13262            });
13263        });
13264
13265        let fs = FakeFs::new(cx.background_executor.clone());
13266        let project = Project::test(fs, [], cx).await;
13267        let (workspace, cx) =
13268            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13269        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13270
13271        // Create a test item that simulates a file
13272        let item = cx.new(|cx| {
13273            TestItem::new(cx)
13274                .with_label("test.txt")
13275                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
13276        });
13277
13278        // Add item to workspace
13279        workspace.update_in(cx, |workspace, window, cx| {
13280            workspace.add_item(
13281                pane.clone(),
13282                Box::new(item.clone()),
13283                None,
13284                false,
13285                false,
13286                window,
13287                cx,
13288            );
13289        });
13290
13291        // Verify the item is in the pane
13292        pane.read_with(cx, |pane, _| {
13293            assert_eq!(pane.items().count(), 1);
13294        });
13295
13296        // Simulate file deletion by setting the item's deleted state
13297        item.update(cx, |item, _| {
13298            item.set_has_deleted_file(true);
13299        });
13300
13301        // Emit UpdateTab event to trigger the close behavior
13302        cx.run_until_parked();
13303        item.update(cx, |_, cx| {
13304            cx.emit(ItemEvent::UpdateTab);
13305        });
13306
13307        // Allow the close operation to complete
13308        cx.run_until_parked();
13309
13310        // Verify the item was automatically closed
13311        pane.read_with(cx, |pane, _| {
13312            assert_eq!(
13313                pane.items().count(),
13314                0,
13315                "Item should be automatically closed when file is deleted"
13316            );
13317        });
13318    }
13319
13320    /// Tests that when `close_on_file_delete` is disabled (default), files remain
13321    /// open with a strikethrough when they are deleted from disk.
13322    #[gpui::test]
13323    async fn test_close_on_disk_deletion_disabled(cx: &mut TestAppContext) {
13324        init_test(cx);
13325
13326        // Ensure close_on_disk_deletion is disabled (default)
13327        cx.update_global(|store: &mut SettingsStore, cx| {
13328            store.update_user_settings(cx, |settings| {
13329                settings.workspace.close_on_file_delete = Some(false);
13330            });
13331        });
13332
13333        let fs = FakeFs::new(cx.background_executor.clone());
13334        let project = Project::test(fs, [], cx).await;
13335        let (workspace, cx) =
13336            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13337        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13338
13339        // Create a test item that simulates a file
13340        let item = cx.new(|cx| {
13341            TestItem::new(cx)
13342                .with_label("test.txt")
13343                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
13344        });
13345
13346        // Add item to workspace
13347        workspace.update_in(cx, |workspace, window, cx| {
13348            workspace.add_item(
13349                pane.clone(),
13350                Box::new(item.clone()),
13351                None,
13352                false,
13353                false,
13354                window,
13355                cx,
13356            );
13357        });
13358
13359        // Verify the item is in the pane
13360        pane.read_with(cx, |pane, _| {
13361            assert_eq!(pane.items().count(), 1);
13362        });
13363
13364        // Simulate file deletion
13365        item.update(cx, |item, _| {
13366            item.set_has_deleted_file(true);
13367        });
13368
13369        // Emit UpdateTab event
13370        cx.run_until_parked();
13371        item.update(cx, |_, cx| {
13372            cx.emit(ItemEvent::UpdateTab);
13373        });
13374
13375        // Allow any potential close operation to complete
13376        cx.run_until_parked();
13377
13378        // Verify the item remains open (with strikethrough)
13379        pane.read_with(cx, |pane, _| {
13380            assert_eq!(
13381                pane.items().count(),
13382                1,
13383                "Item should remain open when close_on_disk_deletion is disabled"
13384            );
13385        });
13386
13387        // Verify the item shows as deleted
13388        item.read_with(cx, |item, _| {
13389            assert!(
13390                item.has_deleted_file,
13391                "Item should be marked as having deleted file"
13392            );
13393        });
13394    }
13395
13396    /// Tests that dirty files are not automatically closed when deleted from disk,
13397    /// even when `close_on_file_delete` is enabled. This ensures users don't lose
13398    /// unsaved changes without being prompted.
13399    #[gpui::test]
13400    async fn test_close_on_disk_deletion_with_dirty_file(cx: &mut TestAppContext) {
13401        init_test(cx);
13402
13403        // Enable the close_on_file_delete setting
13404        cx.update_global(|store: &mut SettingsStore, cx| {
13405            store.update_user_settings(cx, |settings| {
13406                settings.workspace.close_on_file_delete = Some(true);
13407            });
13408        });
13409
13410        let fs = FakeFs::new(cx.background_executor.clone());
13411        let project = Project::test(fs, [], cx).await;
13412        let (workspace, cx) =
13413            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13414        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13415
13416        // Create a dirty test item
13417        let item = cx.new(|cx| {
13418            TestItem::new(cx)
13419                .with_dirty(true)
13420                .with_label("test.txt")
13421                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
13422        });
13423
13424        // Add item to workspace
13425        workspace.update_in(cx, |workspace, window, cx| {
13426            workspace.add_item(
13427                pane.clone(),
13428                Box::new(item.clone()),
13429                None,
13430                false,
13431                false,
13432                window,
13433                cx,
13434            );
13435        });
13436
13437        // Simulate file deletion
13438        item.update(cx, |item, _| {
13439            item.set_has_deleted_file(true);
13440        });
13441
13442        // Emit UpdateTab event to trigger the close behavior
13443        cx.run_until_parked();
13444        item.update(cx, |_, cx| {
13445            cx.emit(ItemEvent::UpdateTab);
13446        });
13447
13448        // Allow any potential close operation to complete
13449        cx.run_until_parked();
13450
13451        // Verify the item remains open (dirty files are not auto-closed)
13452        pane.read_with(cx, |pane, _| {
13453            assert_eq!(
13454                pane.items().count(),
13455                1,
13456                "Dirty items should not be automatically closed even when file is deleted"
13457            );
13458        });
13459
13460        // Verify the item is marked as deleted and still dirty
13461        item.read_with(cx, |item, _| {
13462            assert!(
13463                item.has_deleted_file,
13464                "Item should be marked as having deleted file"
13465            );
13466            assert!(item.is_dirty, "Item should still be dirty");
13467        });
13468    }
13469
13470    /// Tests that navigation history is cleaned up when files are auto-closed
13471    /// due to deletion from disk.
13472    #[gpui::test]
13473    async fn test_close_on_disk_deletion_cleans_navigation_history(cx: &mut TestAppContext) {
13474        init_test(cx);
13475
13476        // Enable the close_on_file_delete setting
13477        cx.update_global(|store: &mut SettingsStore, cx| {
13478            store.update_user_settings(cx, |settings| {
13479                settings.workspace.close_on_file_delete = Some(true);
13480            });
13481        });
13482
13483        let fs = FakeFs::new(cx.background_executor.clone());
13484        let project = Project::test(fs, [], cx).await;
13485        let (workspace, cx) =
13486            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13487        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13488
13489        // Create test items
13490        let item1 = cx.new(|cx| {
13491            TestItem::new(cx)
13492                .with_label("test1.txt")
13493                .with_project_items(&[TestProjectItem::new(1, "test1.txt", cx)])
13494        });
13495        let item1_id = item1.item_id();
13496
13497        let item2 = cx.new(|cx| {
13498            TestItem::new(cx)
13499                .with_label("test2.txt")
13500                .with_project_items(&[TestProjectItem::new(2, "test2.txt", cx)])
13501        });
13502
13503        // Add items to workspace
13504        workspace.update_in(cx, |workspace, window, cx| {
13505            workspace.add_item(
13506                pane.clone(),
13507                Box::new(item1.clone()),
13508                None,
13509                false,
13510                false,
13511                window,
13512                cx,
13513            );
13514            workspace.add_item(
13515                pane.clone(),
13516                Box::new(item2.clone()),
13517                None,
13518                false,
13519                false,
13520                window,
13521                cx,
13522            );
13523        });
13524
13525        // Activate item1 to ensure it gets navigation entries
13526        pane.update_in(cx, |pane, window, cx| {
13527            pane.activate_item(0, true, true, window, cx);
13528        });
13529
13530        // Switch to item2 and back to create navigation history
13531        pane.update_in(cx, |pane, window, cx| {
13532            pane.activate_item(1, true, true, window, cx);
13533        });
13534        cx.run_until_parked();
13535
13536        pane.update_in(cx, |pane, window, cx| {
13537            pane.activate_item(0, true, true, window, cx);
13538        });
13539        cx.run_until_parked();
13540
13541        // Simulate file deletion for item1
13542        item1.update(cx, |item, _| {
13543            item.set_has_deleted_file(true);
13544        });
13545
13546        // Emit UpdateTab event to trigger the close behavior
13547        item1.update(cx, |_, cx| {
13548            cx.emit(ItemEvent::UpdateTab);
13549        });
13550        cx.run_until_parked();
13551
13552        // Verify item1 was closed
13553        pane.read_with(cx, |pane, _| {
13554            assert_eq!(
13555                pane.items().count(),
13556                1,
13557                "Should have 1 item remaining after auto-close"
13558            );
13559        });
13560
13561        // Check navigation history after close
13562        let has_item = pane.read_with(cx, |pane, cx| {
13563            let mut has_item = false;
13564            pane.nav_history().for_each_entry(cx, &mut |entry, _| {
13565                if entry.item.id() == item1_id {
13566                    has_item = true;
13567                }
13568            });
13569            has_item
13570        });
13571
13572        assert!(
13573            !has_item,
13574            "Navigation history should not contain closed item entries"
13575        );
13576    }
13577
13578    #[gpui::test]
13579    async fn test_no_save_prompt_when_dirty_multi_buffer_closed_with_all_of_its_dirty_items_present_in_the_pane(
13580        cx: &mut TestAppContext,
13581    ) {
13582        init_test(cx);
13583
13584        let fs = FakeFs::new(cx.background_executor.clone());
13585        let project = Project::test(fs, [], cx).await;
13586        let (workspace, cx) =
13587            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
13588        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13589
13590        let dirty_regular_buffer = cx.new(|cx| {
13591            TestItem::new(cx)
13592                .with_dirty(true)
13593                .with_label("1.txt")
13594                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
13595        });
13596        let dirty_regular_buffer_2 = cx.new(|cx| {
13597            TestItem::new(cx)
13598                .with_dirty(true)
13599                .with_label("2.txt")
13600                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
13601        });
13602        let clear_regular_buffer = cx.new(|cx| {
13603            TestItem::new(cx)
13604                .with_label("3.txt")
13605                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
13606        });
13607
13608        let dirty_multi_buffer = cx.new(|cx| {
13609            TestItem::new(cx)
13610                .with_dirty(true)
13611                .with_buffer_kind(ItemBufferKind::Multibuffer)
13612                .with_label("Fake Project Search")
13613                .with_project_items(&[
13614                    dirty_regular_buffer.read(cx).project_items[0].clone(),
13615                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
13616                    clear_regular_buffer.read(cx).project_items[0].clone(),
13617                ])
13618        });
13619        workspace.update_in(cx, |workspace, window, cx| {
13620            workspace.add_item(
13621                pane.clone(),
13622                Box::new(dirty_regular_buffer.clone()),
13623                None,
13624                false,
13625                false,
13626                window,
13627                cx,
13628            );
13629            workspace.add_item(
13630                pane.clone(),
13631                Box::new(dirty_regular_buffer_2.clone()),
13632                None,
13633                false,
13634                false,
13635                window,
13636                cx,
13637            );
13638            workspace.add_item(
13639                pane.clone(),
13640                Box::new(dirty_multi_buffer.clone()),
13641                None,
13642                false,
13643                false,
13644                window,
13645                cx,
13646            );
13647        });
13648
13649        pane.update_in(cx, |pane, window, cx| {
13650            pane.activate_item(2, true, true, window, cx);
13651            assert_eq!(
13652                pane.active_item().unwrap().item_id(),
13653                dirty_multi_buffer.item_id(),
13654                "Should select the multi buffer in the pane"
13655            );
13656        });
13657        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
13658            pane.close_active_item(
13659                &CloseActiveItem {
13660                    save_intent: None,
13661                    close_pinned: false,
13662                },
13663                window,
13664                cx,
13665            )
13666        });
13667        cx.background_executor.run_until_parked();
13668        assert!(
13669            !cx.has_pending_prompt(),
13670            "All dirty items from the multi buffer are in the pane still, no save prompts should be shown"
13671        );
13672        close_multi_buffer_task
13673            .await
13674            .expect("Closing multi buffer failed");
13675        pane.update(cx, |pane, cx| {
13676            assert_eq!(dirty_regular_buffer.read(cx).save_count, 0);
13677            assert_eq!(dirty_multi_buffer.read(cx).save_count, 0);
13678            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 0);
13679            assert_eq!(
13680                pane.items()
13681                    .map(|item| item.item_id())
13682                    .sorted()
13683                    .collect::<Vec<_>>(),
13684                vec![
13685                    dirty_regular_buffer.item_id(),
13686                    dirty_regular_buffer_2.item_id(),
13687                ],
13688                "Should have no multi buffer left in the pane"
13689            );
13690            assert!(dirty_regular_buffer.read(cx).is_dirty);
13691            assert!(dirty_regular_buffer_2.read(cx).is_dirty);
13692        });
13693    }
13694
13695    #[gpui::test]
13696    async fn test_move_focused_panel_to_next_position(cx: &mut gpui::TestAppContext) {
13697        init_test(cx);
13698        let fs = FakeFs::new(cx.executor());
13699        let project = Project::test(fs, [], cx).await;
13700        let (multi_workspace, cx) =
13701            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
13702        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
13703
13704        // Add a new panel to the right dock, opening the dock and setting the
13705        // focus to the new panel.
13706        let panel = workspace.update_in(cx, |workspace, window, cx| {
13707            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
13708            workspace.add_panel(panel.clone(), window, cx);
13709
13710            workspace
13711                .right_dock()
13712                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
13713
13714            workspace.toggle_panel_focus::<TestPanel>(window, cx);
13715
13716            panel
13717        });
13718
13719        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
13720        // panel to the next valid position which, in this case, is the left
13721        // dock.
13722        cx.dispatch_action(MoveFocusedPanelToNextPosition);
13723        workspace.update(cx, |workspace, cx| {
13724            assert!(workspace.left_dock().read(cx).is_open());
13725            assert_eq!(panel.read(cx).position, DockPosition::Left);
13726        });
13727
13728        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
13729        // panel to the next valid position which, in this case, is the bottom
13730        // dock.
13731        cx.dispatch_action(MoveFocusedPanelToNextPosition);
13732        workspace.update(cx, |workspace, cx| {
13733            assert!(workspace.bottom_dock().read(cx).is_open());
13734            assert_eq!(panel.read(cx).position, DockPosition::Bottom);
13735        });
13736
13737        // Dispatch the `MoveFocusedPanelToNextPosition` action again, this time
13738        // around moving the panel to its initial position, the right dock.
13739        cx.dispatch_action(MoveFocusedPanelToNextPosition);
13740        workspace.update(cx, |workspace, cx| {
13741            assert!(workspace.right_dock().read(cx).is_open());
13742            assert_eq!(panel.read(cx).position, DockPosition::Right);
13743        });
13744
13745        // Remove focus from the panel, ensuring that, if the panel is not
13746        // focused, the `MoveFocusedPanelToNextPosition` action does not update
13747        // the panel's position, so the panel is still in the right dock.
13748        workspace.update_in(cx, |workspace, window, cx| {
13749            workspace.toggle_panel_focus::<TestPanel>(window, cx);
13750        });
13751
13752        cx.dispatch_action(MoveFocusedPanelToNextPosition);
13753        workspace.update(cx, |workspace, cx| {
13754            assert!(workspace.right_dock().read(cx).is_open());
13755            assert_eq!(panel.read(cx).position, DockPosition::Right);
13756        });
13757    }
13758
13759    #[gpui::test]
13760    async fn test_moving_items_create_panes(cx: &mut TestAppContext) {
13761        init_test(cx);
13762
13763        let fs = FakeFs::new(cx.executor());
13764        let project = Project::test(fs, [], cx).await;
13765        let (workspace, cx) =
13766            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
13767
13768        let item_1 = cx.new(|cx| {
13769            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
13770        });
13771        workspace.update_in(cx, |workspace, window, cx| {
13772            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
13773            workspace.move_item_to_pane_in_direction(
13774                &MoveItemToPaneInDirection {
13775                    direction: SplitDirection::Right,
13776                    focus: true,
13777                    clone: false,
13778                },
13779                window,
13780                cx,
13781            );
13782            workspace.move_item_to_pane_at_index(
13783                &MoveItemToPane {
13784                    destination: 3,
13785                    focus: true,
13786                    clone: false,
13787                },
13788                window,
13789                cx,
13790            );
13791
13792            assert_eq!(workspace.panes.len(), 1, "No new panes were created");
13793            assert_eq!(
13794                pane_items_paths(&workspace.active_pane, cx),
13795                vec!["first.txt".to_string()],
13796                "Single item was not moved anywhere"
13797            );
13798        });
13799
13800        let item_2 = cx.new(|cx| {
13801            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "second.txt", cx)])
13802        });
13803        workspace.update_in(cx, |workspace, window, cx| {
13804            workspace.add_item_to_active_pane(Box::new(item_2), None, true, window, cx);
13805            assert_eq!(
13806                pane_items_paths(&workspace.panes[0], cx),
13807                vec!["first.txt".to_string(), "second.txt".to_string()],
13808            );
13809            workspace.move_item_to_pane_in_direction(
13810                &MoveItemToPaneInDirection {
13811                    direction: SplitDirection::Right,
13812                    focus: true,
13813                    clone: false,
13814                },
13815                window,
13816                cx,
13817            );
13818
13819            assert_eq!(workspace.panes.len(), 2, "A new pane should be created");
13820            assert_eq!(
13821                pane_items_paths(&workspace.panes[0], cx),
13822                vec!["first.txt".to_string()],
13823                "After moving, one item should be left in the original pane"
13824            );
13825            assert_eq!(
13826                pane_items_paths(&workspace.panes[1], cx),
13827                vec!["second.txt".to_string()],
13828                "New item should have been moved to the new pane"
13829            );
13830        });
13831
13832        let item_3 = cx.new(|cx| {
13833            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "third.txt", cx)])
13834        });
13835        workspace.update_in(cx, |workspace, window, cx| {
13836            let original_pane = workspace.panes[0].clone();
13837            workspace.set_active_pane(&original_pane, window, cx);
13838            workspace.add_item_to_active_pane(Box::new(item_3), None, true, window, cx);
13839            assert_eq!(workspace.panes.len(), 2, "No new panes were created");
13840            assert_eq!(
13841                pane_items_paths(&workspace.active_pane, cx),
13842                vec!["first.txt".to_string(), "third.txt".to_string()],
13843                "New pane should be ready to move one item out"
13844            );
13845
13846            workspace.move_item_to_pane_at_index(
13847                &MoveItemToPane {
13848                    destination: 3,
13849                    focus: true,
13850                    clone: false,
13851                },
13852                window,
13853                cx,
13854            );
13855            assert_eq!(workspace.panes.len(), 3, "A new pane should be created");
13856            assert_eq!(
13857                pane_items_paths(&workspace.active_pane, cx),
13858                vec!["first.txt".to_string()],
13859                "After moving, one item should be left in the original pane"
13860            );
13861            assert_eq!(
13862                pane_items_paths(&workspace.panes[1], cx),
13863                vec!["second.txt".to_string()],
13864                "Previously created pane should be unchanged"
13865            );
13866            assert_eq!(
13867                pane_items_paths(&workspace.panes[2], cx),
13868                vec!["third.txt".to_string()],
13869                "New item should have been moved to the new pane"
13870            );
13871        });
13872    }
13873
13874    #[gpui::test]
13875    async fn test_moving_items_can_clone_panes(cx: &mut TestAppContext) {
13876        init_test(cx);
13877
13878        let fs = FakeFs::new(cx.executor());
13879        let project = Project::test(fs, [], cx).await;
13880        let (workspace, cx) =
13881            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
13882
13883        let item_1 = cx.new(|cx| {
13884            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
13885        });
13886        workspace.update_in(cx, |workspace, window, cx| {
13887            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
13888            workspace.move_item_to_pane_in_direction(
13889                &MoveItemToPaneInDirection {
13890                    direction: SplitDirection::Right,
13891                    focus: true,
13892                    clone: true,
13893                },
13894                window,
13895                cx,
13896            );
13897        });
13898        cx.run_until_parked();
13899        workspace.update_in(cx, |workspace, window, cx| {
13900            workspace.move_item_to_pane_at_index(
13901                &MoveItemToPane {
13902                    destination: 3,
13903                    focus: true,
13904                    clone: true,
13905                },
13906                window,
13907                cx,
13908            );
13909        });
13910        cx.run_until_parked();
13911
13912        workspace.update(cx, |workspace, cx| {
13913            assert_eq!(workspace.panes.len(), 3, "Two new panes were created");
13914            for pane in workspace.panes() {
13915                assert_eq!(
13916                    pane_items_paths(pane, cx),
13917                    vec!["first.txt".to_string()],
13918                    "Single item exists in all panes"
13919                );
13920            }
13921        });
13922
13923        // verify that the active pane has been updated after waiting for the
13924        // pane focus event to fire and resolve
13925        workspace.read_with(cx, |workspace, _app| {
13926            assert_eq!(
13927                workspace.active_pane(),
13928                &workspace.panes[2],
13929                "The third pane should be the active one: {:?}",
13930                workspace.panes
13931            );
13932        })
13933    }
13934
13935    #[gpui::test]
13936    async fn test_close_item_in_all_panes(cx: &mut TestAppContext) {
13937        init_test(cx);
13938
13939        let fs = FakeFs::new(cx.executor());
13940        fs.insert_tree("/root", json!({ "test.txt": "" })).await;
13941
13942        let project = Project::test(fs, ["root".as_ref()], cx).await;
13943        let (workspace, cx) =
13944            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
13945
13946        let pane_a = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
13947        // Add item to pane A with project path
13948        let item_a = cx.new(|cx| {
13949            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
13950        });
13951        workspace.update_in(cx, |workspace, window, cx| {
13952            workspace.add_item_to_active_pane(Box::new(item_a.clone()), None, true, window, cx)
13953        });
13954
13955        // Split to create pane B
13956        let pane_b = workspace.update_in(cx, |workspace, window, cx| {
13957            workspace.split_pane(pane_a.clone(), SplitDirection::Right, window, cx)
13958        });
13959
13960        // Add item with SAME project path to pane B, and pin it
13961        let item_b = cx.new(|cx| {
13962            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
13963        });
13964        pane_b.update_in(cx, |pane, window, cx| {
13965            pane.add_item(Box::new(item_b.clone()), true, true, None, window, cx);
13966            pane.set_pinned_count(1);
13967        });
13968
13969        assert_eq!(pane_a.read_with(cx, |pane, _| pane.items_len()), 1);
13970        assert_eq!(pane_b.read_with(cx, |pane, _| pane.items_len()), 1);
13971
13972        // close_pinned: false should only close the unpinned copy
13973        workspace.update_in(cx, |workspace, window, cx| {
13974            workspace.close_item_in_all_panes(
13975                &CloseItemInAllPanes {
13976                    save_intent: Some(SaveIntent::Close),
13977                    close_pinned: false,
13978                },
13979                window,
13980                cx,
13981            )
13982        });
13983        cx.executor().run_until_parked();
13984
13985        let item_count_a = pane_a.read_with(cx, |pane, _| pane.items_len());
13986        let item_count_b = pane_b.read_with(cx, |pane, _| pane.items_len());
13987        assert_eq!(item_count_a, 0, "Unpinned item in pane A should be closed");
13988        assert_eq!(item_count_b, 1, "Pinned item in pane B should remain");
13989
13990        // Split again, seeing as closing the previous item also closed its
13991        // pane, so only pane remains, which does not allow us to properly test
13992        // that both items close when `close_pinned: true`.
13993        let pane_c = workspace.update_in(cx, |workspace, window, cx| {
13994            workspace.split_pane(pane_b.clone(), SplitDirection::Right, window, cx)
13995        });
13996
13997        // Add an item with the same project path to pane C so that
13998        // close_item_in_all_panes can determine what to close across all panes
13999        // (it reads the active item from the active pane, and split_pane
14000        // creates an empty pane).
14001        let item_c = cx.new(|cx| {
14002            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
14003        });
14004        pane_c.update_in(cx, |pane, window, cx| {
14005            pane.add_item(Box::new(item_c.clone()), true, true, None, window, cx);
14006        });
14007
14008        // close_pinned: true should close the pinned copy too
14009        workspace.update_in(cx, |workspace, window, cx| {
14010            let panes_count = workspace.panes().len();
14011            assert_eq!(panes_count, 2, "Workspace should have two panes (B and C)");
14012
14013            workspace.close_item_in_all_panes(
14014                &CloseItemInAllPanes {
14015                    save_intent: Some(SaveIntent::Close),
14016                    close_pinned: true,
14017                },
14018                window,
14019                cx,
14020            )
14021        });
14022        cx.executor().run_until_parked();
14023
14024        let item_count_b = pane_b.read_with(cx, |pane, _| pane.items_len());
14025        let item_count_c = pane_c.read_with(cx, |pane, _| pane.items_len());
14026        assert_eq!(item_count_b, 0, "Pinned item in pane B should be closed");
14027        assert_eq!(item_count_c, 0, "Unpinned item in pane C should be closed");
14028    }
14029
14030    mod register_project_item_tests {
14031
14032        use super::*;
14033
14034        // View
14035        struct TestPngItemView {
14036            focus_handle: FocusHandle,
14037        }
14038        // Model
14039        struct TestPngItem {}
14040
14041        impl project::ProjectItem for TestPngItem {
14042            fn try_open(
14043                _project: &Entity<Project>,
14044                path: &ProjectPath,
14045                cx: &mut App,
14046            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
14047                if path.path.extension().unwrap() == "png" {
14048                    Some(cx.spawn(async move |cx| Ok(cx.new(|_| TestPngItem {}))))
14049                } else {
14050                    None
14051                }
14052            }
14053
14054            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
14055                None
14056            }
14057
14058            fn project_path(&self, _: &App) -> Option<ProjectPath> {
14059                None
14060            }
14061
14062            fn is_dirty(&self) -> bool {
14063                false
14064            }
14065        }
14066
14067        impl Item for TestPngItemView {
14068            type Event = ();
14069            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
14070                "".into()
14071            }
14072        }
14073        impl EventEmitter<()> for TestPngItemView {}
14074        impl Focusable for TestPngItemView {
14075            fn focus_handle(&self, _cx: &App) -> FocusHandle {
14076                self.focus_handle.clone()
14077            }
14078        }
14079
14080        impl Render for TestPngItemView {
14081            fn render(
14082                &mut self,
14083                _window: &mut Window,
14084                _cx: &mut Context<Self>,
14085            ) -> impl IntoElement {
14086                Empty
14087            }
14088        }
14089
14090        impl ProjectItem for TestPngItemView {
14091            type Item = TestPngItem;
14092
14093            fn for_project_item(
14094                _project: Entity<Project>,
14095                _pane: Option<&Pane>,
14096                _item: Entity<Self::Item>,
14097                _: &mut Window,
14098                cx: &mut Context<Self>,
14099            ) -> Self
14100            where
14101                Self: Sized,
14102            {
14103                Self {
14104                    focus_handle: cx.focus_handle(),
14105                }
14106            }
14107        }
14108
14109        // View
14110        struct TestIpynbItemView {
14111            focus_handle: FocusHandle,
14112        }
14113        // Model
14114        struct TestIpynbItem {}
14115
14116        impl project::ProjectItem for TestIpynbItem {
14117            fn try_open(
14118                _project: &Entity<Project>,
14119                path: &ProjectPath,
14120                cx: &mut App,
14121            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
14122                if path.path.extension().unwrap() == "ipynb" {
14123                    Some(cx.spawn(async move |cx| Ok(cx.new(|_| TestIpynbItem {}))))
14124                } else {
14125                    None
14126                }
14127            }
14128
14129            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
14130                None
14131            }
14132
14133            fn project_path(&self, _: &App) -> Option<ProjectPath> {
14134                None
14135            }
14136
14137            fn is_dirty(&self) -> bool {
14138                false
14139            }
14140        }
14141
14142        impl Item for TestIpynbItemView {
14143            type Event = ();
14144            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
14145                "".into()
14146            }
14147        }
14148        impl EventEmitter<()> for TestIpynbItemView {}
14149        impl Focusable for TestIpynbItemView {
14150            fn focus_handle(&self, _cx: &App) -> FocusHandle {
14151                self.focus_handle.clone()
14152            }
14153        }
14154
14155        impl Render for TestIpynbItemView {
14156            fn render(
14157                &mut self,
14158                _window: &mut Window,
14159                _cx: &mut Context<Self>,
14160            ) -> impl IntoElement {
14161                Empty
14162            }
14163        }
14164
14165        impl ProjectItem for TestIpynbItemView {
14166            type Item = TestIpynbItem;
14167
14168            fn for_project_item(
14169                _project: Entity<Project>,
14170                _pane: Option<&Pane>,
14171                _item: Entity<Self::Item>,
14172                _: &mut Window,
14173                cx: &mut Context<Self>,
14174            ) -> Self
14175            where
14176                Self: Sized,
14177            {
14178                Self {
14179                    focus_handle: cx.focus_handle(),
14180                }
14181            }
14182        }
14183
14184        struct TestAlternatePngItemView {
14185            focus_handle: FocusHandle,
14186        }
14187
14188        impl Item for TestAlternatePngItemView {
14189            type Event = ();
14190            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
14191                "".into()
14192            }
14193        }
14194
14195        impl EventEmitter<()> for TestAlternatePngItemView {}
14196        impl Focusable for TestAlternatePngItemView {
14197            fn focus_handle(&self, _cx: &App) -> FocusHandle {
14198                self.focus_handle.clone()
14199            }
14200        }
14201
14202        impl Render for TestAlternatePngItemView {
14203            fn render(
14204                &mut self,
14205                _window: &mut Window,
14206                _cx: &mut Context<Self>,
14207            ) -> impl IntoElement {
14208                Empty
14209            }
14210        }
14211
14212        impl ProjectItem for TestAlternatePngItemView {
14213            type Item = TestPngItem;
14214
14215            fn for_project_item(
14216                _project: Entity<Project>,
14217                _pane: Option<&Pane>,
14218                _item: Entity<Self::Item>,
14219                _: &mut Window,
14220                cx: &mut Context<Self>,
14221            ) -> Self
14222            where
14223                Self: Sized,
14224            {
14225                Self {
14226                    focus_handle: cx.focus_handle(),
14227                }
14228            }
14229        }
14230
14231        #[gpui::test]
14232        async fn test_register_project_item(cx: &mut TestAppContext) {
14233            init_test(cx);
14234
14235            cx.update(|cx| {
14236                register_project_item::<TestPngItemView>(cx);
14237                register_project_item::<TestIpynbItemView>(cx);
14238            });
14239
14240            let fs = FakeFs::new(cx.executor());
14241            fs.insert_tree(
14242                "/root1",
14243                json!({
14244                    "one.png": "BINARYDATAHERE",
14245                    "two.ipynb": "{ totally a notebook }",
14246                    "three.txt": "editing text, sure why not?"
14247                }),
14248            )
14249            .await;
14250
14251            let project = Project::test(fs, ["root1".as_ref()], cx).await;
14252            let (workspace, cx) =
14253                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
14254
14255            let worktree_id = project.update(cx, |project, cx| {
14256                project.worktrees(cx).next().unwrap().read(cx).id()
14257            });
14258
14259            let handle = workspace
14260                .update_in(cx, |workspace, window, cx| {
14261                    let project_path = (worktree_id, rel_path("one.png"));
14262                    workspace.open_path(project_path, None, true, window, cx)
14263                })
14264                .await
14265                .unwrap();
14266
14267            // Now we can check if the handle we got back errored or not
14268            assert_eq!(
14269                handle.to_any_view().entity_type(),
14270                TypeId::of::<TestPngItemView>()
14271            );
14272
14273            let handle = workspace
14274                .update_in(cx, |workspace, window, cx| {
14275                    let project_path = (worktree_id, rel_path("two.ipynb"));
14276                    workspace.open_path(project_path, None, true, window, cx)
14277                })
14278                .await
14279                .unwrap();
14280
14281            assert_eq!(
14282                handle.to_any_view().entity_type(),
14283                TypeId::of::<TestIpynbItemView>()
14284            );
14285
14286            let handle = workspace
14287                .update_in(cx, |workspace, window, cx| {
14288                    let project_path = (worktree_id, rel_path("three.txt"));
14289                    workspace.open_path(project_path, None, true, window, cx)
14290                })
14291                .await;
14292            assert!(handle.is_err());
14293        }
14294
14295        #[gpui::test]
14296        async fn test_register_project_item_two_enter_one_leaves(cx: &mut TestAppContext) {
14297            init_test(cx);
14298
14299            cx.update(|cx| {
14300                register_project_item::<TestPngItemView>(cx);
14301                register_project_item::<TestAlternatePngItemView>(cx);
14302            });
14303
14304            let fs = FakeFs::new(cx.executor());
14305            fs.insert_tree(
14306                "/root1",
14307                json!({
14308                    "one.png": "BINARYDATAHERE",
14309                    "two.ipynb": "{ totally a notebook }",
14310                    "three.txt": "editing text, sure why not?"
14311                }),
14312            )
14313            .await;
14314            let project = Project::test(fs, ["root1".as_ref()], cx).await;
14315            let (workspace, cx) =
14316                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
14317            let worktree_id = project.update(cx, |project, cx| {
14318                project.worktrees(cx).next().unwrap().read(cx).id()
14319            });
14320
14321            let handle = workspace
14322                .update_in(cx, |workspace, window, cx| {
14323                    let project_path = (worktree_id, rel_path("one.png"));
14324                    workspace.open_path(project_path, None, true, window, cx)
14325                })
14326                .await
14327                .unwrap();
14328
14329            // This _must_ be the second item registered
14330            assert_eq!(
14331                handle.to_any_view().entity_type(),
14332                TypeId::of::<TestAlternatePngItemView>()
14333            );
14334
14335            let handle = workspace
14336                .update_in(cx, |workspace, window, cx| {
14337                    let project_path = (worktree_id, rel_path("three.txt"));
14338                    workspace.open_path(project_path, None, true, window, cx)
14339                })
14340                .await;
14341            assert!(handle.is_err());
14342        }
14343    }
14344
14345    #[gpui::test]
14346    async fn test_status_bar_visibility(cx: &mut TestAppContext) {
14347        init_test(cx);
14348
14349        let fs = FakeFs::new(cx.executor());
14350        let project = Project::test(fs, [], cx).await;
14351        let (workspace, _cx) =
14352            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
14353
14354        // Test with status bar shown (default)
14355        workspace.read_with(cx, |workspace, cx| {
14356            let visible = workspace.status_bar_visible(cx);
14357            assert!(visible, "Status bar should be visible by default");
14358        });
14359
14360        // Test with status bar hidden
14361        cx.update_global(|store: &mut SettingsStore, cx| {
14362            store.update_user_settings(cx, |settings| {
14363                settings.status_bar.get_or_insert_default().show = Some(false);
14364            });
14365        });
14366
14367        workspace.read_with(cx, |workspace, cx| {
14368            let visible = workspace.status_bar_visible(cx);
14369            assert!(!visible, "Status bar should be hidden when show is false");
14370        });
14371
14372        // Test with status bar shown explicitly
14373        cx.update_global(|store: &mut SettingsStore, cx| {
14374            store.update_user_settings(cx, |settings| {
14375                settings.status_bar.get_or_insert_default().show = Some(true);
14376            });
14377        });
14378
14379        workspace.read_with(cx, |workspace, cx| {
14380            let visible = workspace.status_bar_visible(cx);
14381            assert!(visible, "Status bar should be visible when show is true");
14382        });
14383    }
14384
14385    #[gpui::test]
14386    async fn test_pane_close_active_item(cx: &mut TestAppContext) {
14387        init_test(cx);
14388
14389        let fs = FakeFs::new(cx.executor());
14390        let project = Project::test(fs, [], cx).await;
14391        let (multi_workspace, cx) =
14392            cx.add_window_view(|window, cx| MultiWorkspace::test_new(project, window, cx));
14393        let workspace = multi_workspace.read_with(cx, |mw, _| mw.workspace().clone());
14394        let panel = workspace.update_in(cx, |workspace, window, cx| {
14395            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
14396            workspace.add_panel(panel.clone(), window, cx);
14397
14398            workspace
14399                .right_dock()
14400                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
14401
14402            panel
14403        });
14404
14405        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
14406        let item_a = cx.new(TestItem::new);
14407        let item_b = cx.new(TestItem::new);
14408        let item_a_id = item_a.entity_id();
14409        let item_b_id = item_b.entity_id();
14410
14411        pane.update_in(cx, |pane, window, cx| {
14412            pane.add_item(Box::new(item_a.clone()), true, true, None, window, cx);
14413            pane.add_item(Box::new(item_b.clone()), true, true, None, window, cx);
14414        });
14415
14416        pane.read_with(cx, |pane, _| {
14417            assert_eq!(pane.items_len(), 2);
14418            assert_eq!(pane.active_item().unwrap().item_id(), item_b_id);
14419        });
14420
14421        workspace.update_in(cx, |workspace, window, cx| {
14422            workspace.toggle_panel_focus::<TestPanel>(window, cx);
14423        });
14424
14425        workspace.update_in(cx, |_, window, cx| {
14426            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
14427        });
14428
14429        // Assert that the `pane::CloseActiveItem` action is handled at the
14430        // workspace level when one of the dock panels is focused and, in that
14431        // case, the center pane's active item is closed but the focus is not
14432        // moved.
14433        cx.dispatch_action(pane::CloseActiveItem::default());
14434        cx.run_until_parked();
14435
14436        pane.read_with(cx, |pane, _| {
14437            assert_eq!(pane.items_len(), 1);
14438            assert_eq!(pane.active_item().unwrap().item_id(), item_a_id);
14439        });
14440
14441        workspace.update_in(cx, |workspace, window, cx| {
14442            assert!(workspace.right_dock().read(cx).is_open());
14443            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
14444        });
14445    }
14446
14447    #[gpui::test]
14448    async fn test_panel_zoom_preserved_across_workspace_switch(cx: &mut TestAppContext) {
14449        init_test(cx);
14450        let fs = FakeFs::new(cx.executor());
14451
14452        let project_a = Project::test(fs.clone(), [], cx).await;
14453        let project_b = Project::test(fs, [], cx).await;
14454
14455        let multi_workspace_handle =
14456            cx.add_window(|window, cx| MultiWorkspace::test_new(project_a.clone(), window, cx));
14457        cx.run_until_parked();
14458
14459        let workspace_a = multi_workspace_handle
14460            .read_with(cx, |mw, _| mw.workspace().clone())
14461            .unwrap();
14462
14463        let _workspace_b = multi_workspace_handle
14464            .update(cx, |mw, window, cx| {
14465                mw.test_add_workspace(project_b, window, cx)
14466            })
14467            .unwrap();
14468
14469        // Switch to workspace A
14470        multi_workspace_handle
14471            .update(cx, |mw, window, cx| {
14472                let workspace = mw.workspaces()[0].clone();
14473                mw.activate(workspace, window, cx);
14474            })
14475            .unwrap();
14476
14477        let cx = &mut VisualTestContext::from_window(multi_workspace_handle.into(), cx);
14478
14479        // Add a panel to workspace A's right dock and open the dock
14480        let panel = workspace_a.update_in(cx, |workspace, window, cx| {
14481            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
14482            workspace.add_panel(panel.clone(), window, cx);
14483            workspace
14484                .right_dock()
14485                .update(cx, |dock, cx| dock.set_open(true, window, cx));
14486            panel
14487        });
14488
14489        // Focus the panel through the workspace (matching existing test pattern)
14490        workspace_a.update_in(cx, |workspace, window, cx| {
14491            workspace.toggle_panel_focus::<TestPanel>(window, cx);
14492        });
14493
14494        // Zoom the panel
14495        panel.update_in(cx, |panel, window, cx| {
14496            panel.set_zoomed(true, window, cx);
14497        });
14498
14499        // Verify the panel is zoomed and the dock is open
14500        workspace_a.update_in(cx, |workspace, window, cx| {
14501            assert!(
14502                workspace.right_dock().read(cx).is_open(),
14503                "dock should be open before switch"
14504            );
14505            assert!(
14506                panel.is_zoomed(window, cx),
14507                "panel should be zoomed before switch"
14508            );
14509            assert!(
14510                panel.read(cx).focus_handle(cx).contains_focused(window, cx),
14511                "panel should be focused before switch"
14512            );
14513        });
14514
14515        // Switch to workspace B
14516        multi_workspace_handle
14517            .update(cx, |mw, window, cx| {
14518                let workspace = mw.workspaces()[1].clone();
14519                mw.activate(workspace, window, cx);
14520            })
14521            .unwrap();
14522        cx.run_until_parked();
14523
14524        // Switch back to workspace A
14525        multi_workspace_handle
14526            .update(cx, |mw, window, cx| {
14527                let workspace = mw.workspaces()[0].clone();
14528                mw.activate(workspace, window, cx);
14529            })
14530            .unwrap();
14531        cx.run_until_parked();
14532
14533        // Verify the panel is still zoomed and the dock is still open
14534        workspace_a.update_in(cx, |workspace, window, cx| {
14535            assert!(
14536                workspace.right_dock().read(cx).is_open(),
14537                "dock should still be open after switching back"
14538            );
14539            assert!(
14540                panel.is_zoomed(window, cx),
14541                "panel should still be zoomed after switching back"
14542            );
14543        });
14544    }
14545
14546    fn pane_items_paths(pane: &Entity<Pane>, cx: &App) -> Vec<String> {
14547        pane.read(cx)
14548            .items()
14549            .flat_map(|item| {
14550                item.project_paths(cx)
14551                    .into_iter()
14552                    .map(|path| path.path.display(PathStyle::local()).into_owned())
14553            })
14554            .collect()
14555    }
14556
14557    pub fn init_test(cx: &mut TestAppContext) {
14558        cx.update(|cx| {
14559            let settings_store = SettingsStore::test(cx);
14560            cx.set_global(settings_store);
14561            cx.set_global(db::AppDatabase::test_new());
14562            theme_settings::init(theme::LoadThemes::JustBase, cx);
14563        });
14564    }
14565
14566    #[gpui::test]
14567    async fn test_toggle_theme_mode_persists_and_updates_active_theme(cx: &mut TestAppContext) {
14568        use settings::{ThemeName, ThemeSelection};
14569        use theme::SystemAppearance;
14570        use zed_actions::theme::ToggleMode;
14571
14572        init_test(cx);
14573
14574        let fs = FakeFs::new(cx.executor());
14575        let settings_fs: Arc<dyn fs::Fs> = fs.clone();
14576
14577        fs.insert_tree(path!("/root"), json!({ "file.rs": "fn main() {}\n" }))
14578            .await;
14579
14580        // Build a test project and workspace view so the test can invoke
14581        // the workspace action handler the same way the UI would.
14582        let project = Project::test(fs.clone(), [path!("/root").as_ref()], cx).await;
14583        let (workspace, cx) =
14584            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
14585
14586        // Seed the settings file with a plain static light theme so the
14587        // first toggle always starts from a known persisted state.
14588        workspace.update_in(cx, |_workspace, _window, cx| {
14589            *SystemAppearance::global_mut(cx) = SystemAppearance(theme::Appearance::Light);
14590            settings::update_settings_file(settings_fs.clone(), cx, |settings, _cx| {
14591                settings.theme.theme = Some(ThemeSelection::Static(ThemeName("One Light".into())));
14592            });
14593        });
14594        cx.executor().advance_clock(Duration::from_millis(200));
14595        cx.run_until_parked();
14596
14597        // Confirm the initial persisted settings contain the static theme
14598        // we just wrote before any toggling happens.
14599        let settings_text = SettingsStore::load_settings(&settings_fs).await.unwrap();
14600        assert!(settings_text.contains(r#""theme": "One Light""#));
14601
14602        // Toggle once. This should migrate the persisted theme settings
14603        // into light/dark slots and enable system mode.
14604        workspace.update_in(cx, |workspace, window, cx| {
14605            workspace.toggle_theme_mode(&ToggleMode, window, cx);
14606        });
14607        cx.executor().advance_clock(Duration::from_millis(200));
14608        cx.run_until_parked();
14609
14610        // 1. Static -> Dynamic
14611        // this assertion checks theme changed from static to dynamic.
14612        let settings_text = SettingsStore::load_settings(&settings_fs).await.unwrap();
14613        let parsed: serde_json::Value = settings::parse_json_with_comments(&settings_text).unwrap();
14614        assert_eq!(
14615            parsed["theme"],
14616            serde_json::json!({
14617                "mode": "system",
14618                "light": "One Light",
14619                "dark": "One Dark"
14620            })
14621        );
14622
14623        // 2. Toggle again, suppose it will change the mode to light
14624        workspace.update_in(cx, |workspace, window, cx| {
14625            workspace.toggle_theme_mode(&ToggleMode, window, cx);
14626        });
14627        cx.executor().advance_clock(Duration::from_millis(200));
14628        cx.run_until_parked();
14629
14630        let settings_text = SettingsStore::load_settings(&settings_fs).await.unwrap();
14631        assert!(settings_text.contains(r#""mode": "light""#));
14632    }
14633
14634    fn dirty_project_item(id: u64, path: &str, cx: &mut App) -> Entity<TestProjectItem> {
14635        let item = TestProjectItem::new(id, path, cx);
14636        item.update(cx, |item, _| {
14637            item.is_dirty = true;
14638        });
14639        item
14640    }
14641
14642    #[gpui::test]
14643    async fn test_zoomed_panel_without_pane_preserved_on_center_focus(
14644        cx: &mut gpui::TestAppContext,
14645    ) {
14646        init_test(cx);
14647        let fs = FakeFs::new(cx.executor());
14648
14649        let project = Project::test(fs, [], cx).await;
14650        let (workspace, cx) =
14651            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
14652
14653        let panel = workspace.update_in(cx, |workspace, window, cx| {
14654            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, 100, cx));
14655            workspace.add_panel(panel.clone(), window, cx);
14656            workspace
14657                .right_dock()
14658                .update(cx, |dock, cx| dock.set_open(true, window, cx));
14659            panel
14660        });
14661
14662        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
14663        pane.update_in(cx, |pane, window, cx| {
14664            let item = cx.new(TestItem::new);
14665            pane.add_item(Box::new(item), true, true, None, window, cx);
14666        });
14667
14668        // Transfer focus to the panel, then zoom it. Using toggle_panel_focus
14669        // mirrors the real-world flow and avoids side effects from directly
14670        // focusing the panel while the center pane is active.
14671        workspace.update_in(cx, |workspace, window, cx| {
14672            workspace.toggle_panel_focus::<TestPanel>(window, cx);
14673        });
14674
14675        panel.update_in(cx, |panel, window, cx| {
14676            panel.set_zoomed(true, window, cx);
14677        });
14678
14679        workspace.update_in(cx, |workspace, window, cx| {
14680            assert!(workspace.right_dock().read(cx).is_open());
14681            assert!(panel.is_zoomed(window, cx));
14682            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
14683        });
14684
14685        // Simulate a spurious pane::Event::Focus on the center pane while the
14686        // panel still has focus. This mirrors what happens during macOS window
14687        // activation: the center pane fires a focus event even though actual
14688        // focus remains on the dock panel.
14689        pane.update_in(cx, |_, _, cx| {
14690            cx.emit(pane::Event::Focus);
14691        });
14692
14693        // The dock must remain open because the panel had focus at the time the
14694        // event was processed. Before the fix, dock_to_preserve was None for
14695        // panels that don't implement pane(), causing the dock to close.
14696        workspace.update_in(cx, |workspace, window, cx| {
14697            assert!(
14698                workspace.right_dock().read(cx).is_open(),
14699                "Dock should stay open when its zoomed panel (without pane()) still has focus"
14700            );
14701            assert!(panel.is_zoomed(window, cx));
14702        });
14703    }
14704
14705    #[gpui::test]
14706    async fn test_panels_stay_open_after_position_change_and_settings_update(
14707        cx: &mut gpui::TestAppContext,
14708    ) {
14709        init_test(cx);
14710        let fs = FakeFs::new(cx.executor());
14711        let project = Project::test(fs, [], cx).await;
14712        let (workspace, cx) =
14713            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
14714
14715        // Add two panels to the left dock and open it.
14716        let (panel_a, panel_b) = workspace.update_in(cx, |workspace, window, cx| {
14717            let panel_a = cx.new(|cx| TestPanel::new(DockPosition::Left, 100, cx));
14718            let panel_b = cx.new(|cx| TestPanel::new(DockPosition::Left, 101, cx));
14719            workspace.add_panel(panel_a.clone(), window, cx);
14720            workspace.add_panel(panel_b.clone(), window, cx);
14721            workspace.left_dock().update(cx, |dock, cx| {
14722                dock.set_open(true, window, cx);
14723                dock.activate_panel(0, window, cx);
14724            });
14725            (panel_a, panel_b)
14726        });
14727
14728        workspace.update_in(cx, |workspace, _, cx| {
14729            assert!(workspace.left_dock().read(cx).is_open());
14730        });
14731
14732        // Simulate a feature flag changing default dock positions: both panels
14733        // move from Left to Right.
14734        workspace.update_in(cx, |_workspace, _window, cx| {
14735            panel_a.update(cx, |p, _cx| p.position = DockPosition::Right);
14736            panel_b.update(cx, |p, _cx| p.position = DockPosition::Right);
14737            cx.update_global::<SettingsStore, _>(|_, _| {});
14738        });
14739
14740        // Both panels should now be in the right dock.
14741        workspace.update_in(cx, |workspace, _, cx| {
14742            let right_dock = workspace.right_dock().read(cx);
14743            assert_eq!(right_dock.panels_len(), 2);
14744        });
14745
14746        // Open the right dock and activate panel_b (simulating the user
14747        // opening the panel after it moved).
14748        workspace.update_in(cx, |workspace, window, cx| {
14749            workspace.right_dock().update(cx, |dock, cx| {
14750                dock.set_open(true, window, cx);
14751                dock.activate_panel(1, window, cx);
14752            });
14753        });
14754
14755        // Now trigger another SettingsStore change
14756        workspace.update_in(cx, |_workspace, _window, cx| {
14757            cx.update_global::<SettingsStore, _>(|_, _| {});
14758        });
14759
14760        workspace.update_in(cx, |workspace, _, cx| {
14761            assert!(
14762                workspace.right_dock().read(cx).is_open(),
14763                "Right dock should still be open after a settings change"
14764            );
14765            assert_eq!(
14766                workspace.right_dock().read(cx).panels_len(),
14767                2,
14768                "Both panels should still be in the right dock"
14769            );
14770        });
14771    }
14772}