workspace.rs

    1pub mod dock;
    2pub mod history_manager;
    3pub mod invalid_item_view;
    4pub mod item;
    5mod modal_layer;
    6pub mod notifications;
    7pub mod pane;
    8pub mod pane_group;
    9mod path_list;
   10mod persistence;
   11pub mod searchable;
   12pub mod shared_screen;
   13mod status_bar;
   14pub mod tasks;
   15mod theme_preview;
   16mod toast_layer;
   17mod toolbar;
   18mod workspace_settings;
   19
   20pub use crate::notifications::NotificationFrame;
   21pub use dock::Panel;
   22pub use path_list::PathList;
   23pub use toast_layer::{ToastAction, ToastLayer, ToastView};
   24
   25use anyhow::{Context as _, Result, anyhow};
   26use call::{ActiveCall, call_settings::CallSettings};
   27use client::{
   28    ChannelId, Client, ErrorExt, Status, TypedEnvelope, UserStore,
   29    proto::{self, ErrorCode, PanelId, PeerId},
   30};
   31use collections::{HashMap, HashSet, hash_map};
   32use dock::{Dock, DockPosition, PanelButtons, PanelHandle, RESIZE_HANDLE_SIZE};
   33use futures::{
   34    Future, FutureExt, StreamExt,
   35    channel::{
   36        mpsc::{self, UnboundedReceiver, UnboundedSender},
   37        oneshot,
   38    },
   39    future::{Shared, try_join_all},
   40};
   41use gpui::{
   42    Action, AnyEntity, AnyView, AnyWeakView, App, AsyncApp, AsyncWindowContext, Bounds, Context,
   43    CursorStyle, Decorations, DragMoveEvent, Entity, EntityId, EventEmitter, FocusHandle,
   44    Focusable, Global, HitboxBehavior, Hsla, KeyContext, Keystroke, ManagedView, MouseButton,
   45    PathPromptOptions, Point, PromptLevel, Render, ResizeEdge, Size, Stateful, Subscription,
   46    SystemWindowTabController, Task, Tiling, WeakEntity, WindowBounds, WindowHandle, WindowId,
   47    WindowOptions, actions, canvas, point, relative, size, transparent_black,
   48};
   49pub use history_manager::*;
   50pub use item::{
   51    FollowableItem, FollowableItemHandle, Item, ItemHandle, ItemSettings, PreviewTabsSettings,
   52    ProjectItem, SerializableItem, SerializableItemHandle, WeakItemHandle,
   53};
   54use itertools::Itertools;
   55use language::{Buffer, LanguageRegistry, Rope, language_settings::all_language_settings};
   56pub use modal_layer::*;
   57use node_runtime::NodeRuntime;
   58use notifications::{
   59    DetachAndPromptErr, Notifications, dismiss_app_notification,
   60    simple_message_notification::MessageNotification,
   61};
   62pub use pane::*;
   63pub use pane_group::{
   64    ActivePaneDecorator, HANDLE_HITBOX_SIZE, Member, PaneAxis, PaneGroup, PaneRenderContext,
   65    SplitDirection,
   66};
   67use persistence::{DB, SerializedWindowBounds, model::SerializedWorkspace};
   68pub use persistence::{
   69    DB as WORKSPACE_DB, WorkspaceDb, delete_unloaded_items,
   70    model::{ItemId, SerializedWorkspaceLocation},
   71};
   72use postage::stream::Stream;
   73use project::{
   74    DirectoryLister, Project, ProjectEntryId, ProjectPath, ResolvedPath, Worktree, WorktreeId,
   75    WorktreeSettings,
   76    debugger::{breakpoint_store::BreakpointStoreEvent, session::ThreadStatus},
   77    toolchain_store::ToolchainStoreEvent,
   78};
   79use remote::{
   80    RemoteClientDelegate, RemoteConnection, RemoteConnectionOptions,
   81    remote_client::ConnectionIdentifier,
   82};
   83use schemars::JsonSchema;
   84use serde::Deserialize;
   85use session::AppSession;
   86use settings::{CenteredPaddingSettings, Settings, SettingsLocation, update_settings_file};
   87use shared_screen::SharedScreen;
   88use sqlez::{
   89    bindable::{Bind, Column, StaticColumnCount},
   90    statement::Statement,
   91};
   92use status_bar::StatusBar;
   93pub use status_bar::StatusItemView;
   94use std::{
   95    any::TypeId,
   96    borrow::Cow,
   97    cell::RefCell,
   98    cmp,
   99    collections::{VecDeque, hash_map::DefaultHasher},
  100    env,
  101    hash::{Hash, Hasher},
  102    path::{Path, PathBuf},
  103    process::ExitStatus,
  104    rc::Rc,
  105    sync::{
  106        Arc, LazyLock, Weak,
  107        atomic::{AtomicBool, AtomicUsize},
  108    },
  109    time::Duration,
  110};
  111use task::{DebugScenario, SpawnInTerminal, TaskContext};
  112use theme::{ActiveTheme, GlobalTheme, SystemAppearance, ThemeSettings};
  113pub use toolbar::{Toolbar, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView};
  114pub use ui;
  115use ui::{Window, prelude::*};
  116use util::{
  117    ResultExt, TryFutureExt,
  118    paths::{PathStyle, SanitizedPath},
  119    rel_path::RelPath,
  120    serde::default_true,
  121};
  122use uuid::Uuid;
  123pub use workspace_settings::{
  124    AutosaveSetting, BottomDockLayout, RestoreOnStartupBehavior, StatusBarSettings, TabBarSettings,
  125    WorkspaceSettings,
  126};
  127use zed_actions::{Spawn, feedback::FileBugReport};
  128
  129use crate::persistence::{
  130    SerializedAxis,
  131    model::{DockData, DockStructure, SerializedItem, SerializedPane, SerializedPaneGroup},
  132};
  133use crate::{item::ItemBufferKind, notifications::NotificationId};
  134
  135pub const SERIALIZATION_THROTTLE_TIME: Duration = Duration::from_millis(200);
  136
  137static ZED_WINDOW_SIZE: LazyLock<Option<Size<Pixels>>> = LazyLock::new(|| {
  138    env::var("ZED_WINDOW_SIZE")
  139        .ok()
  140        .as_deref()
  141        .and_then(parse_pixel_size_env_var)
  142});
  143
  144static ZED_WINDOW_POSITION: LazyLock<Option<Point<Pixels>>> = LazyLock::new(|| {
  145    env::var("ZED_WINDOW_POSITION")
  146        .ok()
  147        .as_deref()
  148        .and_then(parse_pixel_position_env_var)
  149});
  150
  151pub trait TerminalProvider {
  152    fn spawn(
  153        &self,
  154        task: SpawnInTerminal,
  155        window: &mut Window,
  156        cx: &mut App,
  157    ) -> Task<Option<Result<ExitStatus>>>;
  158}
  159
  160pub trait DebuggerProvider {
  161    // `active_buffer` is used to resolve build task's name against language-specific tasks.
  162    fn start_session(
  163        &self,
  164        definition: DebugScenario,
  165        task_context: TaskContext,
  166        active_buffer: Option<Entity<Buffer>>,
  167        worktree_id: Option<WorktreeId>,
  168        window: &mut Window,
  169        cx: &mut App,
  170    );
  171
  172    fn spawn_task_or_modal(
  173        &self,
  174        workspace: &mut Workspace,
  175        action: &Spawn,
  176        window: &mut Window,
  177        cx: &mut Context<Workspace>,
  178    );
  179
  180    fn task_scheduled(&self, cx: &mut App);
  181    fn debug_scenario_scheduled(&self, cx: &mut App);
  182    fn debug_scenario_scheduled_last(&self, cx: &App) -> bool;
  183
  184    fn active_thread_state(&self, cx: &App) -> Option<ThreadStatus>;
  185}
  186
  187actions!(
  188    workspace,
  189    [
  190        /// Activates the next pane in the workspace.
  191        ActivateNextPane,
  192        /// Activates the previous pane in the workspace.
  193        ActivatePreviousPane,
  194        /// Switches to the next window.
  195        ActivateNextWindow,
  196        /// Switches to the previous window.
  197        ActivatePreviousWindow,
  198        /// Adds a folder to the current project.
  199        AddFolderToProject,
  200        /// Clears all notifications.
  201        ClearAllNotifications,
  202        /// Clears all navigation history, including forward/backward navigation, recently opened files, and recently closed tabs. **This action is irreversible**.
  203        ClearNavigationHistory,
  204        /// Closes the active dock.
  205        CloseActiveDock,
  206        /// Closes all docks.
  207        CloseAllDocks,
  208        /// Toggles all docks.
  209        ToggleAllDocks,
  210        /// Closes the current window.
  211        CloseWindow,
  212        /// Opens the feedback dialog.
  213        Feedback,
  214        /// Follows the next collaborator in the session.
  215        FollowNextCollaborator,
  216        /// Moves the focused panel to the next position.
  217        MoveFocusedPanelToNextPosition,
  218        /// Opens a new terminal in the center.
  219        NewCenterTerminal,
  220        /// Creates a new file.
  221        NewFile,
  222        /// Creates a new file in a vertical split.
  223        NewFileSplitVertical,
  224        /// Creates a new file in a horizontal split.
  225        NewFileSplitHorizontal,
  226        /// Opens a new search.
  227        NewSearch,
  228        /// Opens a new terminal.
  229        NewTerminal,
  230        /// Opens a new window.
  231        NewWindow,
  232        /// Opens a file or directory.
  233        Open,
  234        /// Opens multiple files.
  235        OpenFiles,
  236        /// Opens the current location in terminal.
  237        OpenInTerminal,
  238        /// Opens the component preview.
  239        OpenComponentPreview,
  240        /// Reloads the active item.
  241        ReloadActiveItem,
  242        /// Resets the active dock to its default size.
  243        ResetActiveDockSize,
  244        /// Resets all open docks to their default sizes.
  245        ResetOpenDocksSize,
  246        /// Reloads the application
  247        Reload,
  248        /// Saves the current file with a new name.
  249        SaveAs,
  250        /// Saves without formatting.
  251        SaveWithoutFormat,
  252        /// Shuts down all debug adapters.
  253        ShutdownDebugAdapters,
  254        /// Suppresses the current notification.
  255        SuppressNotification,
  256        /// Toggles the bottom dock.
  257        ToggleBottomDock,
  258        /// Toggles centered layout mode.
  259        ToggleCenteredLayout,
  260        /// Toggles edit prediction feature globally for all files.
  261        ToggleEditPrediction,
  262        /// Toggles the left dock.
  263        ToggleLeftDock,
  264        /// Toggles the right dock.
  265        ToggleRightDock,
  266        /// Toggles zoom on the active pane.
  267        ToggleZoom,
  268        /// Stops following a collaborator.
  269        Unfollow,
  270        /// Restores the banner.
  271        RestoreBanner,
  272        /// Toggles expansion of the selected item.
  273        ToggleExpandItem,
  274    ]
  275);
  276
  277/// Activates a specific pane by its index.
  278#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  279#[action(namespace = workspace)]
  280pub struct ActivatePane(pub usize);
  281
  282/// Moves an item to a specific pane by index.
  283#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  284#[action(namespace = workspace)]
  285#[serde(deny_unknown_fields)]
  286pub struct MoveItemToPane {
  287    #[serde(default = "default_1")]
  288    pub destination: usize,
  289    #[serde(default = "default_true")]
  290    pub focus: bool,
  291    #[serde(default)]
  292    pub clone: bool,
  293}
  294
  295fn default_1() -> usize {
  296    1
  297}
  298
  299/// Moves an item to a pane in the specified direction.
  300#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  301#[action(namespace = workspace)]
  302#[serde(deny_unknown_fields)]
  303pub struct MoveItemToPaneInDirection {
  304    #[serde(default = "default_right")]
  305    pub direction: SplitDirection,
  306    #[serde(default = "default_true")]
  307    pub focus: bool,
  308    #[serde(default)]
  309    pub clone: bool,
  310}
  311
  312/// Creates a new file in a split of the desired direction.
  313#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  314#[action(namespace = workspace)]
  315#[serde(deny_unknown_fields)]
  316pub struct NewFileSplit(pub SplitDirection);
  317
  318fn default_right() -> SplitDirection {
  319    SplitDirection::Right
  320}
  321
  322/// Saves all open files in the workspace.
  323#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  324#[action(namespace = workspace)]
  325#[serde(deny_unknown_fields)]
  326pub struct SaveAll {
  327    #[serde(default)]
  328    pub save_intent: Option<SaveIntent>,
  329}
  330
  331/// Saves the current file with the specified options.
  332#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  333#[action(namespace = workspace)]
  334#[serde(deny_unknown_fields)]
  335pub struct Save {
  336    #[serde(default)]
  337    pub save_intent: Option<SaveIntent>,
  338}
  339
  340/// Closes all items and panes in the workspace.
  341#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  342#[action(namespace = workspace)]
  343#[serde(deny_unknown_fields)]
  344pub struct CloseAllItemsAndPanes {
  345    #[serde(default)]
  346    pub save_intent: Option<SaveIntent>,
  347}
  348
  349/// Closes all inactive tabs and panes in the workspace.
  350#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  351#[action(namespace = workspace)]
  352#[serde(deny_unknown_fields)]
  353pub struct CloseInactiveTabsAndPanes {
  354    #[serde(default)]
  355    pub save_intent: Option<SaveIntent>,
  356}
  357
  358/// Sends a sequence of keystrokes to the active element.
  359#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  360#[action(namespace = workspace)]
  361pub struct SendKeystrokes(pub String);
  362
  363actions!(
  364    project_symbols,
  365    [
  366        /// Toggles the project symbols search.
  367        #[action(name = "Toggle")]
  368        ToggleProjectSymbols
  369    ]
  370);
  371
  372/// Toggles the file finder interface.
  373#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  374#[action(namespace = file_finder, name = "Toggle")]
  375#[serde(deny_unknown_fields)]
  376pub struct ToggleFileFinder {
  377    #[serde(default)]
  378    pub separate_history: bool,
  379}
  380
  381/// Increases size of a currently focused dock by a given amount of pixels.
  382#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  383#[action(namespace = workspace)]
  384#[serde(deny_unknown_fields)]
  385pub struct IncreaseActiveDockSize {
  386    /// For 0px parameter, uses UI font size value.
  387    #[serde(default)]
  388    pub px: u32,
  389}
  390
  391/// Decreases size of a currently focused dock by a given amount of pixels.
  392#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  393#[action(namespace = workspace)]
  394#[serde(deny_unknown_fields)]
  395pub struct DecreaseActiveDockSize {
  396    /// For 0px parameter, uses UI font size value.
  397    #[serde(default)]
  398    pub px: u32,
  399}
  400
  401/// Increases size of all currently visible docks uniformly, by a given amount of pixels.
  402#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  403#[action(namespace = workspace)]
  404#[serde(deny_unknown_fields)]
  405pub struct IncreaseOpenDocksSize {
  406    /// For 0px parameter, uses UI font size value.
  407    #[serde(default)]
  408    pub px: u32,
  409}
  410
  411/// Decreases size of all currently visible docks uniformly, by a given amount of pixels.
  412#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  413#[action(namespace = workspace)]
  414#[serde(deny_unknown_fields)]
  415pub struct DecreaseOpenDocksSize {
  416    /// For 0px parameter, uses UI font size value.
  417    #[serde(default)]
  418    pub px: u32,
  419}
  420
  421actions!(
  422    workspace,
  423    [
  424        /// Activates the pane to the left.
  425        ActivatePaneLeft,
  426        /// Activates the pane to the right.
  427        ActivatePaneRight,
  428        /// Activates the pane above.
  429        ActivatePaneUp,
  430        /// Activates the pane below.
  431        ActivatePaneDown,
  432        /// Swaps the current pane with the one to the left.
  433        SwapPaneLeft,
  434        /// Swaps the current pane with the one to the right.
  435        SwapPaneRight,
  436        /// Swaps the current pane with the one above.
  437        SwapPaneUp,
  438        /// Swaps the current pane with the one below.
  439        SwapPaneDown,
  440        /// Move the current pane to be at the far left.
  441        MovePaneLeft,
  442        /// Move the current pane to be at the far right.
  443        MovePaneRight,
  444        /// Move the current pane to be at the very top.
  445        MovePaneUp,
  446        /// Move the current pane to be at the very bottom.
  447        MovePaneDown,
  448    ]
  449);
  450
  451#[derive(PartialEq, Eq, Debug)]
  452pub enum CloseIntent {
  453    /// Quit the program entirely.
  454    Quit,
  455    /// Close a window.
  456    CloseWindow,
  457    /// Replace the workspace in an existing window.
  458    ReplaceWindow,
  459}
  460
  461#[derive(Clone)]
  462pub struct Toast {
  463    id: NotificationId,
  464    msg: Cow<'static, str>,
  465    autohide: bool,
  466    on_click: Option<(Cow<'static, str>, Arc<dyn Fn(&mut Window, &mut App)>)>,
  467}
  468
  469impl Toast {
  470    pub fn new<I: Into<Cow<'static, str>>>(id: NotificationId, msg: I) -> Self {
  471        Toast {
  472            id,
  473            msg: msg.into(),
  474            on_click: None,
  475            autohide: false,
  476        }
  477    }
  478
  479    pub fn on_click<F, M>(mut self, message: M, on_click: F) -> Self
  480    where
  481        M: Into<Cow<'static, str>>,
  482        F: Fn(&mut Window, &mut App) + 'static,
  483    {
  484        self.on_click = Some((message.into(), Arc::new(on_click)));
  485        self
  486    }
  487
  488    pub fn autohide(mut self) -> Self {
  489        self.autohide = true;
  490        self
  491    }
  492}
  493
  494impl PartialEq for Toast {
  495    fn eq(&self, other: &Self) -> bool {
  496        self.id == other.id
  497            && self.msg == other.msg
  498            && self.on_click.is_some() == other.on_click.is_some()
  499    }
  500}
  501
  502/// Opens a new terminal with the specified working directory.
  503#[derive(Debug, Default, Clone, Deserialize, PartialEq, JsonSchema, Action)]
  504#[action(namespace = workspace)]
  505#[serde(deny_unknown_fields)]
  506pub struct OpenTerminal {
  507    pub working_directory: PathBuf,
  508}
  509
  510#[derive(Clone, Copy, Debug, Default, Hash, PartialEq, Eq, PartialOrd, Ord)]
  511pub struct WorkspaceId(i64);
  512
  513impl StaticColumnCount for WorkspaceId {}
  514impl Bind for WorkspaceId {
  515    fn bind(&self, statement: &Statement, start_index: i32) -> Result<i32> {
  516        self.0.bind(statement, start_index)
  517    }
  518}
  519impl Column for WorkspaceId {
  520    fn column(statement: &mut Statement, start_index: i32) -> Result<(Self, i32)> {
  521        i64::column(statement, start_index)
  522            .map(|(i, next_index)| (Self(i), next_index))
  523            .with_context(|| format!("Failed to read WorkspaceId at index {start_index}"))
  524    }
  525}
  526impl From<WorkspaceId> for i64 {
  527    fn from(val: WorkspaceId) -> Self {
  528        val.0
  529    }
  530}
  531
  532fn prompt_and_open_paths(app_state: Arc<AppState>, options: PathPromptOptions, cx: &mut App) {
  533    let paths = cx.prompt_for_paths(options);
  534    cx.spawn(
  535        async move |cx| match paths.await.anyhow().and_then(|res| res) {
  536            Ok(Some(paths)) => {
  537                cx.update(|cx| {
  538                    open_paths(&paths, app_state, OpenOptions::default(), cx).detach_and_log_err(cx)
  539                })
  540                .ok();
  541            }
  542            Ok(None) => {}
  543            Err(err) => {
  544                util::log_err(&err);
  545                cx.update(|cx| {
  546                    if let Some(workspace_window) = cx
  547                        .active_window()
  548                        .and_then(|window| window.downcast::<Workspace>())
  549                    {
  550                        workspace_window
  551                            .update(cx, |workspace, _, cx| {
  552                                workspace.show_portal_error(err.to_string(), cx);
  553                            })
  554                            .ok();
  555                    }
  556                })
  557                .ok();
  558            }
  559        },
  560    )
  561    .detach();
  562}
  563
  564pub fn init(app_state: Arc<AppState>, cx: &mut App) {
  565    component::init();
  566    theme_preview::init(cx);
  567    toast_layer::init(cx);
  568    history_manager::init(cx);
  569
  570    cx.on_action(|_: &CloseWindow, cx| Workspace::close_global(cx));
  571    cx.on_action(|_: &Reload, cx| reload(cx));
  572
  573    cx.on_action({
  574        let app_state = Arc::downgrade(&app_state);
  575        move |_: &Open, cx: &mut App| {
  576            if let Some(app_state) = app_state.upgrade() {
  577                prompt_and_open_paths(
  578                    app_state,
  579                    PathPromptOptions {
  580                        files: true,
  581                        directories: true,
  582                        multiple: true,
  583                        prompt: None,
  584                    },
  585                    cx,
  586                );
  587            }
  588        }
  589    });
  590    cx.on_action({
  591        let app_state = Arc::downgrade(&app_state);
  592        move |_: &OpenFiles, cx: &mut App| {
  593            let directories = cx.can_select_mixed_files_and_dirs();
  594            if let Some(app_state) = app_state.upgrade() {
  595                prompt_and_open_paths(
  596                    app_state,
  597                    PathPromptOptions {
  598                        files: true,
  599                        directories,
  600                        multiple: true,
  601                        prompt: None,
  602                    },
  603                    cx,
  604                );
  605            }
  606        }
  607    });
  608}
  609
  610type BuildProjectItemFn =
  611    fn(AnyEntity, Entity<Project>, Option<&Pane>, &mut Window, &mut App) -> Box<dyn ItemHandle>;
  612
  613type BuildProjectItemForPathFn =
  614    fn(
  615        &Entity<Project>,
  616        &ProjectPath,
  617        &mut Window,
  618        &mut App,
  619    ) -> Option<Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>>>;
  620
  621#[derive(Clone, Default)]
  622struct ProjectItemRegistry {
  623    build_project_item_fns_by_type: HashMap<TypeId, BuildProjectItemFn>,
  624    build_project_item_for_path_fns: Vec<BuildProjectItemForPathFn>,
  625}
  626
  627impl ProjectItemRegistry {
  628    fn register<T: ProjectItem>(&mut self) {
  629        self.build_project_item_fns_by_type.insert(
  630            TypeId::of::<T::Item>(),
  631            |item, project, pane, window, cx| {
  632                let item = item.downcast().unwrap();
  633                Box::new(cx.new(|cx| T::for_project_item(project, pane, item, window, cx)))
  634                    as Box<dyn ItemHandle>
  635            },
  636        );
  637        self.build_project_item_for_path_fns
  638            .push(|project, project_path, window, cx| {
  639                let project_path = project_path.clone();
  640                let is_file = project
  641                    .read(cx)
  642                    .entry_for_path(&project_path, cx)
  643                    .is_some_and(|entry| entry.is_file());
  644                let entry_abs_path = project.read(cx).absolute_path(&project_path, cx);
  645                let is_local = project.read(cx).is_local();
  646                let project_item =
  647                    <T::Item as project::ProjectItem>::try_open(project, &project_path, cx)?;
  648                let project = project.clone();
  649                Some(window.spawn(cx, async move |cx| {
  650                    match project_item.await.with_context(|| {
  651                        format!(
  652                            "opening project path {:?}",
  653                            entry_abs_path.as_deref().unwrap_or(&project_path.path.as_std_path())
  654                        )
  655                    }) {
  656                        Ok(project_item) => {
  657                            let project_item = project_item;
  658                            let project_entry_id: Option<ProjectEntryId> =
  659                                project_item.read_with(cx, project::ProjectItem::entry_id)?;
  660                            let build_workspace_item = Box::new(
  661                                |pane: &mut Pane, window: &mut Window, cx: &mut Context<Pane>| {
  662                                    Box::new(cx.new(|cx| {
  663                                        T::for_project_item(
  664                                            project,
  665                                            Some(pane),
  666                                            project_item,
  667                                            window,
  668                                            cx,
  669                                        )
  670                                    })) as Box<dyn ItemHandle>
  671                                },
  672                            ) as Box<_>;
  673                            Ok((project_entry_id, build_workspace_item))
  674                        }
  675                        Err(e) => {
  676                            if e.error_code() == ErrorCode::Internal {
  677                                if let Some(abs_path) =
  678                                    entry_abs_path.as_deref().filter(|_| is_file)
  679                                {
  680                                    if let Some(broken_project_item_view) =
  681                                        cx.update(|window, cx| {
  682                                            T::for_broken_project_item(
  683                                                abs_path, is_local, &e, window, cx,
  684                                            )
  685                                        })?
  686                                    {
  687                                        let build_workspace_item = Box::new(
  688                                            move |_: &mut Pane, _: &mut Window, cx: &mut Context<Pane>| {
  689                                                cx.new(|_| broken_project_item_view).boxed_clone()
  690                                            },
  691                                        )
  692                                        as Box<_>;
  693                                        return Ok((None, build_workspace_item));
  694                                    }
  695                                }
  696                            }
  697                            Err(e)
  698                        }
  699                    }
  700                }))
  701            });
  702    }
  703
  704    fn open_path(
  705        &self,
  706        project: &Entity<Project>,
  707        path: &ProjectPath,
  708        window: &mut Window,
  709        cx: &mut App,
  710    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
  711        let Some(open_project_item) = self
  712            .build_project_item_for_path_fns
  713            .iter()
  714            .rev()
  715            .find_map(|open_project_item| open_project_item(project, path, window, cx))
  716        else {
  717            return Task::ready(Err(anyhow!("cannot open file {:?}", path.path)));
  718        };
  719        open_project_item
  720    }
  721
  722    fn build_item<T: project::ProjectItem>(
  723        &self,
  724        item: Entity<T>,
  725        project: Entity<Project>,
  726        pane: Option<&Pane>,
  727        window: &mut Window,
  728        cx: &mut App,
  729    ) -> Option<Box<dyn ItemHandle>> {
  730        let build = self
  731            .build_project_item_fns_by_type
  732            .get(&TypeId::of::<T>())?;
  733        Some(build(item.into_any(), project, pane, window, cx))
  734    }
  735}
  736
  737type WorkspaceItemBuilder =
  738    Box<dyn FnOnce(&mut Pane, &mut Window, &mut Context<Pane>) -> Box<dyn ItemHandle>>;
  739
  740impl Global for ProjectItemRegistry {}
  741
  742/// Registers a [ProjectItem] for the app. When opening a file, all the registered
  743/// items will get a chance to open the file, starting from the project item that
  744/// was added last.
  745pub fn register_project_item<I: ProjectItem>(cx: &mut App) {
  746    cx.default_global::<ProjectItemRegistry>().register::<I>();
  747}
  748
  749#[derive(Default)]
  750pub struct FollowableViewRegistry(HashMap<TypeId, FollowableViewDescriptor>);
  751
  752struct FollowableViewDescriptor {
  753    from_state_proto: fn(
  754        Entity<Workspace>,
  755        ViewId,
  756        &mut Option<proto::view::Variant>,
  757        &mut Window,
  758        &mut App,
  759    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>>,
  760    to_followable_view: fn(&AnyView) -> Box<dyn FollowableItemHandle>,
  761}
  762
  763impl Global for FollowableViewRegistry {}
  764
  765impl FollowableViewRegistry {
  766    pub fn register<I: FollowableItem>(cx: &mut App) {
  767        cx.default_global::<Self>().0.insert(
  768            TypeId::of::<I>(),
  769            FollowableViewDescriptor {
  770                from_state_proto: |workspace, id, state, window, cx| {
  771                    I::from_state_proto(workspace, id, state, window, cx).map(|task| {
  772                        cx.foreground_executor()
  773                            .spawn(async move { Ok(Box::new(task.await?) as Box<_>) })
  774                    })
  775                },
  776                to_followable_view: |view| Box::new(view.clone().downcast::<I>().unwrap()),
  777            },
  778        );
  779    }
  780
  781    pub fn from_state_proto(
  782        workspace: Entity<Workspace>,
  783        view_id: ViewId,
  784        mut state: Option<proto::view::Variant>,
  785        window: &mut Window,
  786        cx: &mut App,
  787    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>> {
  788        cx.update_default_global(|this: &mut Self, cx| {
  789            this.0.values().find_map(|descriptor| {
  790                (descriptor.from_state_proto)(workspace.clone(), view_id, &mut state, window, cx)
  791            })
  792        })
  793    }
  794
  795    pub fn to_followable_view(
  796        view: impl Into<AnyView>,
  797        cx: &App,
  798    ) -> Option<Box<dyn FollowableItemHandle>> {
  799        let this = cx.try_global::<Self>()?;
  800        let view = view.into();
  801        let descriptor = this.0.get(&view.entity_type())?;
  802        Some((descriptor.to_followable_view)(&view))
  803    }
  804}
  805
  806#[derive(Copy, Clone)]
  807struct SerializableItemDescriptor {
  808    deserialize: fn(
  809        Entity<Project>,
  810        WeakEntity<Workspace>,
  811        WorkspaceId,
  812        ItemId,
  813        &mut Window,
  814        &mut Context<Pane>,
  815    ) -> Task<Result<Box<dyn ItemHandle>>>,
  816    cleanup: fn(WorkspaceId, Vec<ItemId>, &mut Window, &mut App) -> Task<Result<()>>,
  817    view_to_serializable_item: fn(AnyView) -> Box<dyn SerializableItemHandle>,
  818}
  819
  820#[derive(Default)]
  821struct SerializableItemRegistry {
  822    descriptors_by_kind: HashMap<Arc<str>, SerializableItemDescriptor>,
  823    descriptors_by_type: HashMap<TypeId, SerializableItemDescriptor>,
  824}
  825
  826impl Global for SerializableItemRegistry {}
  827
  828impl SerializableItemRegistry {
  829    fn deserialize(
  830        item_kind: &str,
  831        project: Entity<Project>,
  832        workspace: WeakEntity<Workspace>,
  833        workspace_id: WorkspaceId,
  834        item_item: ItemId,
  835        window: &mut Window,
  836        cx: &mut Context<Pane>,
  837    ) -> Task<Result<Box<dyn ItemHandle>>> {
  838        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  839            return Task::ready(Err(anyhow!(
  840                "cannot deserialize {}, descriptor not found",
  841                item_kind
  842            )));
  843        };
  844
  845        (descriptor.deserialize)(project, workspace, workspace_id, item_item, window, cx)
  846    }
  847
  848    fn cleanup(
  849        item_kind: &str,
  850        workspace_id: WorkspaceId,
  851        loaded_items: Vec<ItemId>,
  852        window: &mut Window,
  853        cx: &mut App,
  854    ) -> Task<Result<()>> {
  855        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  856            return Task::ready(Err(anyhow!(
  857                "cannot cleanup {}, descriptor not found",
  858                item_kind
  859            )));
  860        };
  861
  862        (descriptor.cleanup)(workspace_id, loaded_items, window, cx)
  863    }
  864
  865    fn view_to_serializable_item_handle(
  866        view: AnyView,
  867        cx: &App,
  868    ) -> Option<Box<dyn SerializableItemHandle>> {
  869        let this = cx.try_global::<Self>()?;
  870        let descriptor = this.descriptors_by_type.get(&view.entity_type())?;
  871        Some((descriptor.view_to_serializable_item)(view))
  872    }
  873
  874    fn descriptor(item_kind: &str, cx: &App) -> Option<SerializableItemDescriptor> {
  875        let this = cx.try_global::<Self>()?;
  876        this.descriptors_by_kind.get(item_kind).copied()
  877    }
  878}
  879
  880pub fn register_serializable_item<I: SerializableItem>(cx: &mut App) {
  881    let serialized_item_kind = I::serialized_item_kind();
  882
  883    let registry = cx.default_global::<SerializableItemRegistry>();
  884    let descriptor = SerializableItemDescriptor {
  885        deserialize: |project, workspace, workspace_id, item_id, window, cx| {
  886            let task = I::deserialize(project, workspace, workspace_id, item_id, window, cx);
  887            cx.foreground_executor()
  888                .spawn(async { Ok(Box::new(task.await?) as Box<_>) })
  889        },
  890        cleanup: |workspace_id, loaded_items, window, cx| {
  891            I::cleanup(workspace_id, loaded_items, window, cx)
  892        },
  893        view_to_serializable_item: |view| Box::new(view.downcast::<I>().unwrap()),
  894    };
  895    registry
  896        .descriptors_by_kind
  897        .insert(Arc::from(serialized_item_kind), descriptor);
  898    registry
  899        .descriptors_by_type
  900        .insert(TypeId::of::<I>(), descriptor);
  901}
  902
  903pub struct AppState {
  904    pub languages: Arc<LanguageRegistry>,
  905    pub client: Arc<Client>,
  906    pub user_store: Entity<UserStore>,
  907    pub workspace_store: Entity<WorkspaceStore>,
  908    pub fs: Arc<dyn fs::Fs>,
  909    pub build_window_options: fn(Option<Uuid>, &mut App) -> WindowOptions,
  910    pub node_runtime: NodeRuntime,
  911    pub session: Entity<AppSession>,
  912}
  913
  914struct GlobalAppState(Weak<AppState>);
  915
  916impl Global for GlobalAppState {}
  917
  918pub struct WorkspaceStore {
  919    workspaces: HashSet<WindowHandle<Workspace>>,
  920    client: Arc<Client>,
  921    _subscriptions: Vec<client::Subscription>,
  922}
  923
  924#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq, PartialOrd, Ord)]
  925pub enum CollaboratorId {
  926    PeerId(PeerId),
  927    Agent,
  928}
  929
  930impl From<PeerId> for CollaboratorId {
  931    fn from(peer_id: PeerId) -> Self {
  932        CollaboratorId::PeerId(peer_id)
  933    }
  934}
  935
  936impl From<&PeerId> for CollaboratorId {
  937    fn from(peer_id: &PeerId) -> Self {
  938        CollaboratorId::PeerId(*peer_id)
  939    }
  940}
  941
  942#[derive(PartialEq, Eq, PartialOrd, Ord, Debug)]
  943struct Follower {
  944    project_id: Option<u64>,
  945    peer_id: PeerId,
  946}
  947
  948impl AppState {
  949    #[track_caller]
  950    pub fn global(cx: &App) -> Weak<Self> {
  951        cx.global::<GlobalAppState>().0.clone()
  952    }
  953    pub fn try_global(cx: &App) -> Option<Weak<Self>> {
  954        cx.try_global::<GlobalAppState>()
  955            .map(|state| state.0.clone())
  956    }
  957    pub fn set_global(state: Weak<AppState>, cx: &mut App) {
  958        cx.set_global(GlobalAppState(state));
  959    }
  960
  961    #[cfg(any(test, feature = "test-support"))]
  962    pub fn test(cx: &mut App) -> Arc<Self> {
  963        use node_runtime::NodeRuntime;
  964        use session::Session;
  965        use settings::SettingsStore;
  966
  967        if !cx.has_global::<SettingsStore>() {
  968            let settings_store = SettingsStore::test(cx);
  969            cx.set_global(settings_store);
  970        }
  971
  972        let fs = fs::FakeFs::new(cx.background_executor().clone());
  973        let languages = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));
  974        let clock = Arc::new(clock::FakeSystemClock::new());
  975        let http_client = http_client::FakeHttpClient::with_404_response();
  976        let client = Client::new(clock, http_client, cx);
  977        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
  978        let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
  979        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
  980
  981        theme::init(theme::LoadThemes::JustBase, cx);
  982        client::init(&client, cx);
  983
  984        Arc::new(Self {
  985            client,
  986            fs,
  987            languages,
  988            user_store,
  989            workspace_store,
  990            node_runtime: NodeRuntime::unavailable(),
  991            build_window_options: |_, _| Default::default(),
  992            session,
  993        })
  994    }
  995}
  996
  997struct DelayedDebouncedEditAction {
  998    task: Option<Task<()>>,
  999    cancel_channel: Option<oneshot::Sender<()>>,
 1000}
 1001
 1002impl DelayedDebouncedEditAction {
 1003    fn new() -> DelayedDebouncedEditAction {
 1004        DelayedDebouncedEditAction {
 1005            task: None,
 1006            cancel_channel: None,
 1007        }
 1008    }
 1009
 1010    fn fire_new<F>(
 1011        &mut self,
 1012        delay: Duration,
 1013        window: &mut Window,
 1014        cx: &mut Context<Workspace>,
 1015        func: F,
 1016    ) where
 1017        F: 'static
 1018            + Send
 1019            + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> Task<Result<()>>,
 1020    {
 1021        if let Some(channel) = self.cancel_channel.take() {
 1022            _ = channel.send(());
 1023        }
 1024
 1025        let (sender, mut receiver) = oneshot::channel::<()>();
 1026        self.cancel_channel = Some(sender);
 1027
 1028        let previous_task = self.task.take();
 1029        self.task = Some(cx.spawn_in(window, async move |workspace, cx| {
 1030            let mut timer = cx.background_executor().timer(delay).fuse();
 1031            if let Some(previous_task) = previous_task {
 1032                previous_task.await;
 1033            }
 1034
 1035            futures::select_biased! {
 1036                _ = receiver => return,
 1037                    _ = timer => {}
 1038            }
 1039
 1040            if let Some(result) = workspace
 1041                .update_in(cx, |workspace, window, cx| (func)(workspace, window, cx))
 1042                .log_err()
 1043            {
 1044                result.await.log_err();
 1045            }
 1046        }));
 1047    }
 1048}
 1049
 1050pub enum Event {
 1051    PaneAdded(Entity<Pane>),
 1052    PaneRemoved,
 1053    ItemAdded {
 1054        item: Box<dyn ItemHandle>,
 1055    },
 1056    ActiveItemChanged,
 1057    ItemRemoved {
 1058        item_id: EntityId,
 1059    },
 1060    UserSavedItem {
 1061        pane: WeakEntity<Pane>,
 1062        item: Box<dyn WeakItemHandle>,
 1063        save_intent: SaveIntent,
 1064    },
 1065    ContactRequestedJoin(u64),
 1066    WorkspaceCreated(WeakEntity<Workspace>),
 1067    OpenBundledFile {
 1068        text: Cow<'static, str>,
 1069        title: &'static str,
 1070        language: &'static str,
 1071    },
 1072    ZoomChanged,
 1073    ModalOpened,
 1074}
 1075
 1076#[derive(Debug)]
 1077pub enum OpenVisible {
 1078    All,
 1079    None,
 1080    OnlyFiles,
 1081    OnlyDirectories,
 1082}
 1083
 1084enum WorkspaceLocation {
 1085    // Valid local paths or SSH project to serialize
 1086    Location(SerializedWorkspaceLocation, PathList),
 1087    // No valid location found hence clear session id
 1088    DetachFromSession,
 1089    // No valid location found to serialize
 1090    None,
 1091}
 1092
 1093type PromptForNewPath = Box<
 1094    dyn Fn(
 1095        &mut Workspace,
 1096        DirectoryLister,
 1097        &mut Window,
 1098        &mut Context<Workspace>,
 1099    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1100>;
 1101
 1102type PromptForOpenPath = Box<
 1103    dyn Fn(
 1104        &mut Workspace,
 1105        DirectoryLister,
 1106        &mut Window,
 1107        &mut Context<Workspace>,
 1108    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1109>;
 1110
 1111#[derive(Default)]
 1112struct DispatchingKeystrokes {
 1113    dispatched: HashSet<Vec<Keystroke>>,
 1114    queue: VecDeque<Keystroke>,
 1115    task: Option<Shared<Task<()>>>,
 1116}
 1117
 1118/// Collects everything project-related for a certain window opened.
 1119/// In some way, is a counterpart of a window, as the [`WindowHandle`] could be downcast into `Workspace`.
 1120///
 1121/// A `Workspace` usually consists of 1 or more projects, a central pane group, 3 docks and a status bar.
 1122/// The `Workspace` owns everybody's state and serves as a default, "global context",
 1123/// that can be used to register a global action to be triggered from any place in the window.
 1124pub struct Workspace {
 1125    weak_self: WeakEntity<Self>,
 1126    workspace_actions: Vec<Box<dyn Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div>>,
 1127    zoomed: Option<AnyWeakView>,
 1128    previous_dock_drag_coordinates: Option<Point<Pixels>>,
 1129    zoomed_position: Option<DockPosition>,
 1130    center: PaneGroup,
 1131    left_dock: Entity<Dock>,
 1132    bottom_dock: Entity<Dock>,
 1133    right_dock: Entity<Dock>,
 1134    panes: Vec<Entity<Pane>>,
 1135    panes_by_item: HashMap<EntityId, WeakEntity<Pane>>,
 1136    active_pane: Entity<Pane>,
 1137    last_active_center_pane: Option<WeakEntity<Pane>>,
 1138    last_active_view_id: Option<proto::ViewId>,
 1139    status_bar: Entity<StatusBar>,
 1140    modal_layer: Entity<ModalLayer>,
 1141    toast_layer: Entity<ToastLayer>,
 1142    titlebar_item: Option<AnyView>,
 1143    notifications: Notifications,
 1144    suppressed_notifications: HashSet<NotificationId>,
 1145    project: Entity<Project>,
 1146    follower_states: HashMap<CollaboratorId, FollowerState>,
 1147    last_leaders_by_pane: HashMap<WeakEntity<Pane>, CollaboratorId>,
 1148    window_edited: bool,
 1149    last_window_title: Option<String>,
 1150    dirty_items: HashMap<EntityId, Subscription>,
 1151    active_call: Option<(Entity<ActiveCall>, Vec<Subscription>)>,
 1152    leader_updates_tx: mpsc::UnboundedSender<(PeerId, proto::UpdateFollowers)>,
 1153    database_id: Option<WorkspaceId>,
 1154    app_state: Arc<AppState>,
 1155    dispatching_keystrokes: Rc<RefCell<DispatchingKeystrokes>>,
 1156    _subscriptions: Vec<Subscription>,
 1157    _apply_leader_updates: Task<Result<()>>,
 1158    _observe_current_user: Task<Result<()>>,
 1159    _schedule_serialize_workspace: Option<Task<()>>,
 1160    _schedule_serialize_ssh_paths: Option<Task<()>>,
 1161    pane_history_timestamp: Arc<AtomicUsize>,
 1162    bounds: Bounds<Pixels>,
 1163    pub centered_layout: bool,
 1164    bounds_save_task_queued: Option<Task<()>>,
 1165    on_prompt_for_new_path: Option<PromptForNewPath>,
 1166    on_prompt_for_open_path: Option<PromptForOpenPath>,
 1167    terminal_provider: Option<Box<dyn TerminalProvider>>,
 1168    debugger_provider: Option<Arc<dyn DebuggerProvider>>,
 1169    serializable_items_tx: UnboundedSender<Box<dyn SerializableItemHandle>>,
 1170    _items_serializer: Task<Result<()>>,
 1171    session_id: Option<String>,
 1172    scheduled_tasks: Vec<Task<()>>,
 1173    last_open_dock_positions: Vec<DockPosition>,
 1174    removing: bool,
 1175}
 1176
 1177impl EventEmitter<Event> for Workspace {}
 1178
 1179#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
 1180pub struct ViewId {
 1181    pub creator: CollaboratorId,
 1182    pub id: u64,
 1183}
 1184
 1185pub struct FollowerState {
 1186    center_pane: Entity<Pane>,
 1187    dock_pane: Option<Entity<Pane>>,
 1188    active_view_id: Option<ViewId>,
 1189    items_by_leader_view_id: HashMap<ViewId, FollowerView>,
 1190}
 1191
 1192struct FollowerView {
 1193    view: Box<dyn FollowableItemHandle>,
 1194    location: Option<proto::PanelId>,
 1195}
 1196
 1197impl Workspace {
 1198    pub fn new(
 1199        workspace_id: Option<WorkspaceId>,
 1200        project: Entity<Project>,
 1201        app_state: Arc<AppState>,
 1202        window: &mut Window,
 1203        cx: &mut Context<Self>,
 1204    ) -> Self {
 1205        cx.subscribe_in(&project, window, move |this, _, event, window, cx| {
 1206            match event {
 1207                project::Event::RemoteIdChanged(_) => {
 1208                    this.update_window_title(window, cx);
 1209                }
 1210
 1211                project::Event::CollaboratorLeft(peer_id) => {
 1212                    this.collaborator_left(*peer_id, window, cx);
 1213                }
 1214
 1215                project::Event::WorktreeRemoved(_) | project::Event::WorktreeAdded(_) => {
 1216                    this.update_window_title(window, cx);
 1217                    this.serialize_workspace(window, cx);
 1218                    // This event could be triggered by `AddFolderToProject` or `RemoveFromProject`.
 1219                    this.update_history(cx);
 1220                }
 1221
 1222                project::Event::DisconnectedFromHost => {
 1223                    this.update_window_edited(window, cx);
 1224                    let leaders_to_unfollow =
 1225                        this.follower_states.keys().copied().collect::<Vec<_>>();
 1226                    for leader_id in leaders_to_unfollow {
 1227                        this.unfollow(leader_id, window, cx);
 1228                    }
 1229                }
 1230
 1231                project::Event::DisconnectedFromSshRemote => {
 1232                    this.update_window_edited(window, cx);
 1233                }
 1234
 1235                project::Event::Closed => {
 1236                    window.remove_window();
 1237                }
 1238
 1239                project::Event::DeletedEntry(_, entry_id) => {
 1240                    for pane in this.panes.iter() {
 1241                        pane.update(cx, |pane, cx| {
 1242                            pane.handle_deleted_project_item(*entry_id, window, cx)
 1243                        });
 1244                    }
 1245                }
 1246
 1247                project::Event::Toast {
 1248                    notification_id,
 1249                    message,
 1250                } => this.show_notification(
 1251                    NotificationId::named(notification_id.clone()),
 1252                    cx,
 1253                    |cx| cx.new(|cx| MessageNotification::new(message.clone(), cx)),
 1254                ),
 1255
 1256                project::Event::HideToast { notification_id } => {
 1257                    this.dismiss_notification(&NotificationId::named(notification_id.clone()), cx)
 1258                }
 1259
 1260                project::Event::LanguageServerPrompt(request) => {
 1261                    struct LanguageServerPrompt;
 1262
 1263                    let mut hasher = DefaultHasher::new();
 1264                    request.lsp_name.as_str().hash(&mut hasher);
 1265                    let id = hasher.finish();
 1266
 1267                    this.show_notification(
 1268                        NotificationId::composite::<LanguageServerPrompt>(id as usize),
 1269                        cx,
 1270                        |cx| {
 1271                            cx.new(|cx| {
 1272                                notifications::LanguageServerPrompt::new(request.clone(), cx)
 1273                            })
 1274                        },
 1275                    );
 1276                }
 1277
 1278                project::Event::AgentLocationChanged => {
 1279                    this.handle_agent_location_changed(window, cx)
 1280                }
 1281
 1282                _ => {}
 1283            }
 1284            cx.notify()
 1285        })
 1286        .detach();
 1287
 1288        cx.subscribe_in(
 1289            &project.read(cx).breakpoint_store(),
 1290            window,
 1291            |workspace, _, event, window, cx| match event {
 1292                BreakpointStoreEvent::BreakpointsUpdated(_, _)
 1293                | BreakpointStoreEvent::BreakpointsCleared(_) => {
 1294                    workspace.serialize_workspace(window, cx);
 1295                }
 1296                BreakpointStoreEvent::SetDebugLine | BreakpointStoreEvent::ClearDebugLines => {}
 1297            },
 1298        )
 1299        .detach();
 1300        if let Some(toolchain_store) = project.read(cx).toolchain_store() {
 1301            cx.subscribe_in(
 1302                &toolchain_store,
 1303                window,
 1304                |workspace, _, event, window, cx| match event {
 1305                    ToolchainStoreEvent::CustomToolchainsModified => {
 1306                        workspace.serialize_workspace(window, cx);
 1307                    }
 1308                    _ => {}
 1309                },
 1310            )
 1311            .detach();
 1312        }
 1313
 1314        cx.on_focus_lost(window, |this, window, cx| {
 1315            let focus_handle = this.focus_handle(cx);
 1316            window.focus(&focus_handle);
 1317        })
 1318        .detach();
 1319
 1320        let weak_handle = cx.entity().downgrade();
 1321        let pane_history_timestamp = Arc::new(AtomicUsize::new(0));
 1322
 1323        let center_pane = cx.new(|cx| {
 1324            let mut center_pane = Pane::new(
 1325                weak_handle.clone(),
 1326                project.clone(),
 1327                pane_history_timestamp.clone(),
 1328                None,
 1329                NewFile.boxed_clone(),
 1330                true,
 1331                window,
 1332                cx,
 1333            );
 1334            center_pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 1335            center_pane
 1336        });
 1337        cx.subscribe_in(&center_pane, window, Self::handle_pane_event)
 1338            .detach();
 1339
 1340        window.focus(&center_pane.focus_handle(cx));
 1341
 1342        cx.emit(Event::PaneAdded(center_pane.clone()));
 1343
 1344        let window_handle = window.window_handle().downcast::<Workspace>().unwrap();
 1345        app_state.workspace_store.update(cx, |store, _| {
 1346            store.workspaces.insert(window_handle);
 1347        });
 1348
 1349        let mut current_user = app_state.user_store.read(cx).watch_current_user();
 1350        let mut connection_status = app_state.client.status();
 1351        let _observe_current_user = cx.spawn_in(window, async move |this, cx| {
 1352            current_user.next().await;
 1353            connection_status.next().await;
 1354            let mut stream =
 1355                Stream::map(current_user, drop).merge(Stream::map(connection_status, drop));
 1356
 1357            while stream.recv().await.is_some() {
 1358                this.update(cx, |_, cx| cx.notify())?;
 1359            }
 1360            anyhow::Ok(())
 1361        });
 1362
 1363        // All leader updates are enqueued and then processed in a single task, so
 1364        // that each asynchronous operation can be run in order.
 1365        let (leader_updates_tx, mut leader_updates_rx) =
 1366            mpsc::unbounded::<(PeerId, proto::UpdateFollowers)>();
 1367        let _apply_leader_updates = cx.spawn_in(window, async move |this, cx| {
 1368            while let Some((leader_id, update)) = leader_updates_rx.next().await {
 1369                Self::process_leader_update(&this, leader_id, update, cx)
 1370                    .await
 1371                    .log_err();
 1372            }
 1373
 1374            Ok(())
 1375        });
 1376
 1377        cx.emit(Event::WorkspaceCreated(weak_handle.clone()));
 1378        let modal_layer = cx.new(|_| ModalLayer::new());
 1379        let toast_layer = cx.new(|_| ToastLayer::new());
 1380        cx.subscribe(
 1381            &modal_layer,
 1382            |_, _, _: &modal_layer::ModalOpenedEvent, cx| {
 1383                cx.emit(Event::ModalOpened);
 1384            },
 1385        )
 1386        .detach();
 1387
 1388        let left_dock = Dock::new(DockPosition::Left, modal_layer.clone(), window, cx);
 1389        let bottom_dock = Dock::new(DockPosition::Bottom, modal_layer.clone(), window, cx);
 1390        let right_dock = Dock::new(DockPosition::Right, modal_layer.clone(), window, cx);
 1391        let left_dock_buttons = cx.new(|cx| PanelButtons::new(left_dock.clone(), cx));
 1392        let bottom_dock_buttons = cx.new(|cx| PanelButtons::new(bottom_dock.clone(), cx));
 1393        let right_dock_buttons = cx.new(|cx| PanelButtons::new(right_dock.clone(), cx));
 1394        let status_bar = cx.new(|cx| {
 1395            let mut status_bar = StatusBar::new(&center_pane.clone(), window, cx);
 1396            status_bar.add_left_item(left_dock_buttons, window, cx);
 1397            status_bar.add_right_item(right_dock_buttons, window, cx);
 1398            status_bar.add_right_item(bottom_dock_buttons, window, cx);
 1399            status_bar
 1400        });
 1401
 1402        let session_id = app_state.session.read(cx).id().to_owned();
 1403
 1404        let mut active_call = None;
 1405        if let Some(call) = ActiveCall::try_global(cx) {
 1406            let subscriptions = vec![cx.subscribe_in(&call, window, Self::on_active_call_event)];
 1407            active_call = Some((call, subscriptions));
 1408        }
 1409
 1410        let (serializable_items_tx, serializable_items_rx) =
 1411            mpsc::unbounded::<Box<dyn SerializableItemHandle>>();
 1412        let _items_serializer = cx.spawn_in(window, async move |this, cx| {
 1413            Self::serialize_items(&this, serializable_items_rx, cx).await
 1414        });
 1415
 1416        let subscriptions = vec![
 1417            cx.observe_window_activation(window, Self::on_window_activation_changed),
 1418            cx.observe_window_bounds(window, move |this, window, cx| {
 1419                if this.bounds_save_task_queued.is_some() {
 1420                    return;
 1421                }
 1422                this.bounds_save_task_queued = Some(cx.spawn_in(window, async move |this, cx| {
 1423                    cx.background_executor()
 1424                        .timer(Duration::from_millis(100))
 1425                        .await;
 1426                    this.update_in(cx, |this, window, cx| {
 1427                        if let Some(display) = window.display(cx)
 1428                            && let Ok(display_uuid) = display.uuid()
 1429                        {
 1430                            let window_bounds = window.inner_window_bounds();
 1431                            if let Some(database_id) = workspace_id {
 1432                                cx.background_executor()
 1433                                    .spawn(DB.set_window_open_status(
 1434                                        database_id,
 1435                                        SerializedWindowBounds(window_bounds),
 1436                                        display_uuid,
 1437                                    ))
 1438                                    .detach_and_log_err(cx);
 1439                            }
 1440                        }
 1441                        this.bounds_save_task_queued.take();
 1442                    })
 1443                    .ok();
 1444                }));
 1445                cx.notify();
 1446            }),
 1447            cx.observe_window_appearance(window, |_, window, cx| {
 1448                let window_appearance = window.appearance();
 1449
 1450                *SystemAppearance::global_mut(cx) = SystemAppearance(window_appearance.into());
 1451
 1452                GlobalTheme::reload_theme(cx);
 1453                GlobalTheme::reload_icon_theme(cx);
 1454            }),
 1455            cx.on_release(move |this, cx| {
 1456                this.app_state.workspace_store.update(cx, move |store, _| {
 1457                    store.workspaces.remove(&window_handle);
 1458                })
 1459            }),
 1460        ];
 1461
 1462        cx.defer_in(window, |this, window, cx| {
 1463            this.update_window_title(window, cx);
 1464            this.show_initial_notifications(cx);
 1465        });
 1466        Workspace {
 1467            weak_self: weak_handle.clone(),
 1468            zoomed: None,
 1469            zoomed_position: None,
 1470            previous_dock_drag_coordinates: None,
 1471            center: PaneGroup::new(center_pane.clone()),
 1472            panes: vec![center_pane.clone()],
 1473            panes_by_item: Default::default(),
 1474            active_pane: center_pane.clone(),
 1475            last_active_center_pane: Some(center_pane.downgrade()),
 1476            last_active_view_id: None,
 1477            status_bar,
 1478            modal_layer,
 1479            toast_layer,
 1480            titlebar_item: None,
 1481            notifications: Notifications::default(),
 1482            suppressed_notifications: HashSet::default(),
 1483            left_dock,
 1484            bottom_dock,
 1485            right_dock,
 1486            project: project.clone(),
 1487            follower_states: Default::default(),
 1488            last_leaders_by_pane: Default::default(),
 1489            dispatching_keystrokes: Default::default(),
 1490            window_edited: false,
 1491            last_window_title: None,
 1492            dirty_items: Default::default(),
 1493            active_call,
 1494            database_id: workspace_id,
 1495            app_state,
 1496            _observe_current_user,
 1497            _apply_leader_updates,
 1498            _schedule_serialize_workspace: None,
 1499            _schedule_serialize_ssh_paths: None,
 1500            leader_updates_tx,
 1501            _subscriptions: subscriptions,
 1502            pane_history_timestamp,
 1503            workspace_actions: Default::default(),
 1504            // This data will be incorrect, but it will be overwritten by the time it needs to be used.
 1505            bounds: Default::default(),
 1506            centered_layout: false,
 1507            bounds_save_task_queued: None,
 1508            on_prompt_for_new_path: None,
 1509            on_prompt_for_open_path: None,
 1510            terminal_provider: None,
 1511            debugger_provider: None,
 1512            serializable_items_tx,
 1513            _items_serializer,
 1514            session_id: Some(session_id),
 1515
 1516            scheduled_tasks: Vec::new(),
 1517            last_open_dock_positions: Vec::new(),
 1518            removing: false,
 1519        }
 1520    }
 1521
 1522    pub fn new_local(
 1523        abs_paths: Vec<PathBuf>,
 1524        app_state: Arc<AppState>,
 1525        requesting_window: Option<WindowHandle<Workspace>>,
 1526        env: Option<HashMap<String, String>>,
 1527        cx: &mut App,
 1528    ) -> Task<
 1529        anyhow::Result<(
 1530            WindowHandle<Workspace>,
 1531            Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 1532        )>,
 1533    > {
 1534        let project_handle = Project::local(
 1535            app_state.client.clone(),
 1536            app_state.node_runtime.clone(),
 1537            app_state.user_store.clone(),
 1538            app_state.languages.clone(),
 1539            app_state.fs.clone(),
 1540            env,
 1541            cx,
 1542        );
 1543
 1544        cx.spawn(async move |cx| {
 1545            let mut paths_to_open = Vec::with_capacity(abs_paths.len());
 1546            for path in abs_paths.into_iter() {
 1547                if let Some(canonical) = app_state.fs.canonicalize(&path).await.ok() {
 1548                    paths_to_open.push(canonical)
 1549                } else {
 1550                    paths_to_open.push(path)
 1551                }
 1552            }
 1553
 1554            let serialized_workspace =
 1555                persistence::DB.workspace_for_roots(paths_to_open.as_slice());
 1556
 1557            if let Some(paths) = serialized_workspace.as_ref().map(|ws| &ws.paths) {
 1558                paths_to_open = paths.ordered_paths().cloned().collect();
 1559                if !paths.is_lexicographically_ordered() {
 1560                    project_handle
 1561                        .update(cx, |project, cx| {
 1562                            project.set_worktrees_reordered(true, cx);
 1563                        })
 1564                        .log_err();
 1565                }
 1566            }
 1567
 1568            // Get project paths for all of the abs_paths
 1569            let mut project_paths: Vec<(PathBuf, Option<ProjectPath>)> =
 1570                Vec::with_capacity(paths_to_open.len());
 1571
 1572            for path in paths_to_open.into_iter() {
 1573                if let Some((_, project_entry)) = cx
 1574                    .update(|cx| {
 1575                        Workspace::project_path_for_path(project_handle.clone(), &path, true, cx)
 1576                    })?
 1577                    .await
 1578                    .log_err()
 1579                {
 1580                    project_paths.push((path, Some(project_entry)));
 1581                } else {
 1582                    project_paths.push((path, None));
 1583                }
 1584            }
 1585
 1586            let workspace_id = if let Some(serialized_workspace) = serialized_workspace.as_ref() {
 1587                serialized_workspace.id
 1588            } else {
 1589                DB.next_id().await.unwrap_or_else(|_| Default::default())
 1590            };
 1591
 1592            let toolchains = DB.toolchains(workspace_id).await?;
 1593
 1594            for (toolchain, worktree_id, path) in toolchains {
 1595                let toolchain_path = PathBuf::from(toolchain.path.clone().to_string());
 1596                if !app_state.fs.is_file(toolchain_path.as_path()).await {
 1597                    continue;
 1598                }
 1599
 1600                project_handle
 1601                    .update(cx, |this, cx| {
 1602                        this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 1603                    })?
 1604                    .await;
 1605            }
 1606            if let Some(workspace) = serialized_workspace.as_ref() {
 1607                project_handle.update(cx, |this, cx| {
 1608                    for (scope, toolchains) in &workspace.user_toolchains {
 1609                        for toolchain in toolchains {
 1610                            this.add_toolchain(toolchain.clone(), scope.clone(), cx);
 1611                        }
 1612                    }
 1613                })?;
 1614            }
 1615
 1616            let window = if let Some(window) = requesting_window {
 1617                let centered_layout = serialized_workspace
 1618                    .as_ref()
 1619                    .map(|w| w.centered_layout)
 1620                    .unwrap_or(false);
 1621
 1622                cx.update_window(window.into(), |_, window, cx| {
 1623                    window.replace_root(cx, |window, cx| {
 1624                        let mut workspace = Workspace::new(
 1625                            Some(workspace_id),
 1626                            project_handle.clone(),
 1627                            app_state.clone(),
 1628                            window,
 1629                            cx,
 1630                        );
 1631
 1632                        workspace.centered_layout = centered_layout;
 1633                        workspace
 1634                    });
 1635                })?;
 1636                window
 1637            } else {
 1638                let window_bounds_override = window_bounds_env_override();
 1639
 1640                let (window_bounds, display) = if let Some(bounds) = window_bounds_override {
 1641                    (Some(WindowBounds::Windowed(bounds)), None)
 1642                } else {
 1643                    let restorable_bounds = serialized_workspace
 1644                        .as_ref()
 1645                        .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 1646                        .or_else(|| {
 1647                            let (display, window_bounds) = DB.last_window().log_err()?;
 1648                            Some((display?, window_bounds?))
 1649                        });
 1650
 1651                    if let Some((serialized_display, serialized_status)) = restorable_bounds {
 1652                        (Some(serialized_status.0), Some(serialized_display))
 1653                    } else {
 1654                        (None, None)
 1655                    }
 1656                };
 1657
 1658                // Use the serialized workspace to construct the new window
 1659                let mut options = cx.update(|cx| (app_state.build_window_options)(display, cx))?;
 1660                options.window_bounds = window_bounds;
 1661                let centered_layout = serialized_workspace
 1662                    .as_ref()
 1663                    .map(|w| w.centered_layout)
 1664                    .unwrap_or(false);
 1665                cx.open_window(options, {
 1666                    let app_state = app_state.clone();
 1667                    let project_handle = project_handle.clone();
 1668                    move |window, cx| {
 1669                        cx.new(|cx| {
 1670                            let mut workspace = Workspace::new(
 1671                                Some(workspace_id),
 1672                                project_handle,
 1673                                app_state,
 1674                                window,
 1675                                cx,
 1676                            );
 1677                            workspace.centered_layout = centered_layout;
 1678                            workspace
 1679                        })
 1680                    }
 1681                })?
 1682            };
 1683
 1684            notify_if_database_failed(window, cx);
 1685            let opened_items = window
 1686                .update(cx, |_workspace, window, cx| {
 1687                    open_items(serialized_workspace, project_paths, window, cx)
 1688                })?
 1689                .await
 1690                .unwrap_or_default();
 1691
 1692            window
 1693                .update(cx, |workspace, window, cx| {
 1694                    window.activate_window();
 1695                    workspace.update_history(cx);
 1696                })
 1697                .log_err();
 1698            Ok((window, opened_items))
 1699        })
 1700    }
 1701
 1702    pub fn weak_handle(&self) -> WeakEntity<Self> {
 1703        self.weak_self.clone()
 1704    }
 1705
 1706    pub fn left_dock(&self) -> &Entity<Dock> {
 1707        &self.left_dock
 1708    }
 1709
 1710    pub fn bottom_dock(&self) -> &Entity<Dock> {
 1711        &self.bottom_dock
 1712    }
 1713
 1714    pub fn set_bottom_dock_layout(
 1715        &mut self,
 1716        layout: BottomDockLayout,
 1717        window: &mut Window,
 1718        cx: &mut Context<Self>,
 1719    ) {
 1720        let fs = self.project().read(cx).fs();
 1721        settings::update_settings_file(fs.clone(), cx, move |content, _cx| {
 1722            content.workspace.bottom_dock_layout = Some(layout);
 1723        });
 1724
 1725        cx.notify();
 1726        self.serialize_workspace(window, cx);
 1727    }
 1728
 1729    pub fn right_dock(&self) -> &Entity<Dock> {
 1730        &self.right_dock
 1731    }
 1732
 1733    pub fn all_docks(&self) -> [&Entity<Dock>; 3] {
 1734        [&self.left_dock, &self.bottom_dock, &self.right_dock]
 1735    }
 1736
 1737    pub fn dock_at_position(&self, position: DockPosition) -> &Entity<Dock> {
 1738        match position {
 1739            DockPosition::Left => &self.left_dock,
 1740            DockPosition::Bottom => &self.bottom_dock,
 1741            DockPosition::Right => &self.right_dock,
 1742        }
 1743    }
 1744
 1745    pub fn is_edited(&self) -> bool {
 1746        self.window_edited
 1747    }
 1748
 1749    pub fn add_panel<T: Panel>(
 1750        &mut self,
 1751        panel: Entity<T>,
 1752        window: &mut Window,
 1753        cx: &mut Context<Self>,
 1754    ) {
 1755        let focus_handle = panel.panel_focus_handle(cx);
 1756        cx.on_focus_in(&focus_handle, window, Self::handle_panel_focused)
 1757            .detach();
 1758
 1759        let dock_position = panel.position(window, cx);
 1760        let dock = self.dock_at_position(dock_position);
 1761
 1762        dock.update(cx, |dock, cx| {
 1763            dock.add_panel(panel, self.weak_self.clone(), window, cx)
 1764        });
 1765    }
 1766
 1767    pub fn remove_panel<T: Panel>(
 1768        &mut self,
 1769        panel: &Entity<T>,
 1770        window: &mut Window,
 1771        cx: &mut Context<Self>,
 1772    ) {
 1773        for dock in [&self.left_dock, &self.bottom_dock, &self.right_dock] {
 1774            dock.update(cx, |dock, cx| {
 1775                dock.remove_panel(panel, window, cx);
 1776            })
 1777        }
 1778    }
 1779
 1780    pub fn status_bar(&self) -> &Entity<StatusBar> {
 1781        &self.status_bar
 1782    }
 1783
 1784    pub fn status_bar_visible(&self, cx: &App) -> bool {
 1785        StatusBarSettings::get_global(cx).show
 1786    }
 1787
 1788    pub fn app_state(&self) -> &Arc<AppState> {
 1789        &self.app_state
 1790    }
 1791
 1792    pub fn user_store(&self) -> &Entity<UserStore> {
 1793        &self.app_state.user_store
 1794    }
 1795
 1796    pub fn project(&self) -> &Entity<Project> {
 1797        &self.project
 1798    }
 1799
 1800    pub fn path_style(&self, cx: &App) -> PathStyle {
 1801        self.project.read(cx).path_style(cx)
 1802    }
 1803
 1804    pub fn recently_activated_items(&self, cx: &App) -> HashMap<EntityId, usize> {
 1805        let mut history: HashMap<EntityId, usize> = HashMap::default();
 1806
 1807        for pane_handle in &self.panes {
 1808            let pane = pane_handle.read(cx);
 1809
 1810            for entry in pane.activation_history() {
 1811                history.insert(
 1812                    entry.entity_id,
 1813                    history
 1814                        .get(&entry.entity_id)
 1815                        .cloned()
 1816                        .unwrap_or(0)
 1817                        .max(entry.timestamp),
 1818                );
 1819            }
 1820        }
 1821
 1822        history
 1823    }
 1824
 1825    pub fn recent_active_item_by_type<T: 'static>(&self, cx: &App) -> Option<Entity<T>> {
 1826        let mut recent_item: Option<Entity<T>> = None;
 1827        let mut recent_timestamp = 0;
 1828        for pane_handle in &self.panes {
 1829            let pane = pane_handle.read(cx);
 1830            let item_map: HashMap<EntityId, &Box<dyn ItemHandle>> =
 1831                pane.items().map(|item| (item.item_id(), item)).collect();
 1832            for entry in pane.activation_history() {
 1833                if entry.timestamp > recent_timestamp
 1834                    && let Some(&item) = item_map.get(&entry.entity_id)
 1835                    && let Some(typed_item) = item.act_as::<T>(cx)
 1836                {
 1837                    recent_timestamp = entry.timestamp;
 1838                    recent_item = Some(typed_item);
 1839                }
 1840            }
 1841        }
 1842        recent_item
 1843    }
 1844
 1845    pub fn recent_navigation_history_iter(
 1846        &self,
 1847        cx: &App,
 1848    ) -> impl Iterator<Item = (ProjectPath, Option<PathBuf>)> {
 1849        let mut abs_paths_opened: HashMap<PathBuf, HashSet<ProjectPath>> = HashMap::default();
 1850        let mut history: HashMap<ProjectPath, (Option<PathBuf>, usize)> = HashMap::default();
 1851
 1852        for pane in &self.panes {
 1853            let pane = pane.read(cx);
 1854
 1855            pane.nav_history()
 1856                .for_each_entry(cx, |entry, (project_path, fs_path)| {
 1857                    if let Some(fs_path) = &fs_path {
 1858                        abs_paths_opened
 1859                            .entry(fs_path.clone())
 1860                            .or_default()
 1861                            .insert(project_path.clone());
 1862                    }
 1863                    let timestamp = entry.timestamp;
 1864                    match history.entry(project_path) {
 1865                        hash_map::Entry::Occupied(mut entry) => {
 1866                            let (_, old_timestamp) = entry.get();
 1867                            if &timestamp > old_timestamp {
 1868                                entry.insert((fs_path, timestamp));
 1869                            }
 1870                        }
 1871                        hash_map::Entry::Vacant(entry) => {
 1872                            entry.insert((fs_path, timestamp));
 1873                        }
 1874                    }
 1875                });
 1876
 1877            if let Some(item) = pane.active_item()
 1878                && let Some(project_path) = item.project_path(cx)
 1879            {
 1880                let fs_path = self.project.read(cx).absolute_path(&project_path, cx);
 1881
 1882                if let Some(fs_path) = &fs_path {
 1883                    abs_paths_opened
 1884                        .entry(fs_path.clone())
 1885                        .or_default()
 1886                        .insert(project_path.clone());
 1887                }
 1888
 1889                history.insert(project_path, (fs_path, std::usize::MAX));
 1890            }
 1891        }
 1892
 1893        history
 1894            .into_iter()
 1895            .sorted_by_key(|(_, (_, order))| *order)
 1896            .map(|(project_path, (fs_path, _))| (project_path, fs_path))
 1897            .rev()
 1898            .filter(move |(history_path, abs_path)| {
 1899                let latest_project_path_opened = abs_path
 1900                    .as_ref()
 1901                    .and_then(|abs_path| abs_paths_opened.get(abs_path))
 1902                    .and_then(|project_paths| {
 1903                        project_paths
 1904                            .iter()
 1905                            .max_by(|b1, b2| b1.worktree_id.cmp(&b2.worktree_id))
 1906                    });
 1907
 1908                latest_project_path_opened.is_none_or(|path| path == history_path)
 1909            })
 1910    }
 1911
 1912    pub fn recent_navigation_history(
 1913        &self,
 1914        limit: Option<usize>,
 1915        cx: &App,
 1916    ) -> Vec<(ProjectPath, Option<PathBuf>)> {
 1917        self.recent_navigation_history_iter(cx)
 1918            .take(limit.unwrap_or(usize::MAX))
 1919            .collect()
 1920    }
 1921
 1922    pub fn clear_navigation_history(&mut self, _window: &mut Window, cx: &mut Context<Workspace>) {
 1923        for pane in &self.panes {
 1924            pane.update(cx, |pane, cx| pane.nav_history_mut().clear(cx));
 1925        }
 1926    }
 1927
 1928    fn navigate_history(
 1929        &mut self,
 1930        pane: WeakEntity<Pane>,
 1931        mode: NavigationMode,
 1932        window: &mut Window,
 1933        cx: &mut Context<Workspace>,
 1934    ) -> Task<Result<()>> {
 1935        let to_load = if let Some(pane) = pane.upgrade() {
 1936            pane.update(cx, |pane, cx| {
 1937                window.focus(&pane.focus_handle(cx));
 1938                loop {
 1939                    // Retrieve the weak item handle from the history.
 1940                    let entry = pane.nav_history_mut().pop(mode, cx)?;
 1941
 1942                    // If the item is still present in this pane, then activate it.
 1943                    if let Some(index) = entry
 1944                        .item
 1945                        .upgrade()
 1946                        .and_then(|v| pane.index_for_item(v.as_ref()))
 1947                    {
 1948                        let prev_active_item_index = pane.active_item_index();
 1949                        pane.nav_history_mut().set_mode(mode);
 1950                        pane.activate_item(index, true, true, window, cx);
 1951                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1952
 1953                        let mut navigated = prev_active_item_index != pane.active_item_index();
 1954                        if let Some(data) = entry.data {
 1955                            navigated |= pane.active_item()?.navigate(data, window, cx);
 1956                        }
 1957
 1958                        if navigated {
 1959                            break None;
 1960                        }
 1961                    } else {
 1962                        // If the item is no longer present in this pane, then retrieve its
 1963                        // path info in order to reopen it.
 1964                        break pane
 1965                            .nav_history()
 1966                            .path_for_item(entry.item.id())
 1967                            .map(|(project_path, abs_path)| (project_path, abs_path, entry));
 1968                    }
 1969                }
 1970            })
 1971        } else {
 1972            None
 1973        };
 1974
 1975        if let Some((project_path, abs_path, entry)) = to_load {
 1976            // If the item was no longer present, then load it again from its previous path, first try the local path
 1977            let open_by_project_path = self.load_path(project_path.clone(), window, cx);
 1978
 1979            cx.spawn_in(window, async move  |workspace, cx| {
 1980                let open_by_project_path = open_by_project_path.await;
 1981                let mut navigated = false;
 1982                match open_by_project_path
 1983                    .with_context(|| format!("Navigating to {project_path:?}"))
 1984                {
 1985                    Ok((project_entry_id, build_item)) => {
 1986                        let prev_active_item_id = pane.update(cx, |pane, _| {
 1987                            pane.nav_history_mut().set_mode(mode);
 1988                            pane.active_item().map(|p| p.item_id())
 1989                        })?;
 1990
 1991                        pane.update_in(cx, |pane, window, cx| {
 1992                            let item = pane.open_item(
 1993                                project_entry_id,
 1994                                project_path,
 1995                                true,
 1996                                entry.is_preview,
 1997                                true,
 1998                                None,
 1999                                window, cx,
 2000                                build_item,
 2001                            );
 2002                            navigated |= Some(item.item_id()) != prev_active_item_id;
 2003                            pane.nav_history_mut().set_mode(NavigationMode::Normal);
 2004                            if let Some(data) = entry.data {
 2005                                navigated |= item.navigate(data, window, cx);
 2006                            }
 2007                        })?;
 2008                    }
 2009                    Err(open_by_project_path_e) => {
 2010                        // Fall back to opening by abs path, in case an external file was opened and closed,
 2011                        // and its worktree is now dropped
 2012                        if let Some(abs_path) = abs_path {
 2013                            let prev_active_item_id = pane.update(cx, |pane, _| {
 2014                                pane.nav_history_mut().set_mode(mode);
 2015                                pane.active_item().map(|p| p.item_id())
 2016                            })?;
 2017                            let open_by_abs_path = workspace.update_in(cx, |workspace, window, cx| {
 2018                                workspace.open_abs_path(abs_path.clone(), OpenOptions { visible: Some(OpenVisible::None), ..Default::default() }, window, cx)
 2019                            })?;
 2020                            match open_by_abs_path
 2021                                .await
 2022                                .with_context(|| format!("Navigating to {abs_path:?}"))
 2023                            {
 2024                                Ok(item) => {
 2025                                    pane.update_in(cx, |pane, window, cx| {
 2026                                        navigated |= Some(item.item_id()) != prev_active_item_id;
 2027                                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 2028                                        if let Some(data) = entry.data {
 2029                                            navigated |= item.navigate(data, window, cx);
 2030                                        }
 2031                                    })?;
 2032                                }
 2033                                Err(open_by_abs_path_e) => {
 2034                                    log::error!("Failed to navigate history: {open_by_project_path_e:#} and {open_by_abs_path_e:#}");
 2035                                }
 2036                            }
 2037                        }
 2038                    }
 2039                }
 2040
 2041                if !navigated {
 2042                    workspace
 2043                        .update_in(cx, |workspace, window, cx| {
 2044                            Self::navigate_history(workspace, pane, mode, window, cx)
 2045                        })?
 2046                        .await?;
 2047                }
 2048
 2049                Ok(())
 2050            })
 2051        } else {
 2052            Task::ready(Ok(()))
 2053        }
 2054    }
 2055
 2056    pub fn go_back(
 2057        &mut self,
 2058        pane: WeakEntity<Pane>,
 2059        window: &mut Window,
 2060        cx: &mut Context<Workspace>,
 2061    ) -> Task<Result<()>> {
 2062        self.navigate_history(pane, NavigationMode::GoingBack, window, cx)
 2063    }
 2064
 2065    pub fn go_forward(
 2066        &mut self,
 2067        pane: WeakEntity<Pane>,
 2068        window: &mut Window,
 2069        cx: &mut Context<Workspace>,
 2070    ) -> Task<Result<()>> {
 2071        self.navigate_history(pane, NavigationMode::GoingForward, window, cx)
 2072    }
 2073
 2074    pub fn reopen_closed_item(
 2075        &mut self,
 2076        window: &mut Window,
 2077        cx: &mut Context<Workspace>,
 2078    ) -> Task<Result<()>> {
 2079        self.navigate_history(
 2080            self.active_pane().downgrade(),
 2081            NavigationMode::ReopeningClosedItem,
 2082            window,
 2083            cx,
 2084        )
 2085    }
 2086
 2087    pub fn client(&self) -> &Arc<Client> {
 2088        &self.app_state.client
 2089    }
 2090
 2091    pub fn set_titlebar_item(&mut self, item: AnyView, _: &mut Window, cx: &mut Context<Self>) {
 2092        self.titlebar_item = Some(item);
 2093        cx.notify();
 2094    }
 2095
 2096    pub fn set_prompt_for_new_path(&mut self, prompt: PromptForNewPath) {
 2097        self.on_prompt_for_new_path = Some(prompt)
 2098    }
 2099
 2100    pub fn set_prompt_for_open_path(&mut self, prompt: PromptForOpenPath) {
 2101        self.on_prompt_for_open_path = Some(prompt)
 2102    }
 2103
 2104    pub fn set_terminal_provider(&mut self, provider: impl TerminalProvider + 'static) {
 2105        self.terminal_provider = Some(Box::new(provider));
 2106    }
 2107
 2108    pub fn set_debugger_provider(&mut self, provider: impl DebuggerProvider + 'static) {
 2109        self.debugger_provider = Some(Arc::new(provider));
 2110    }
 2111
 2112    pub fn debugger_provider(&self) -> Option<Arc<dyn DebuggerProvider>> {
 2113        self.debugger_provider.clone()
 2114    }
 2115
 2116    pub fn prompt_for_open_path(
 2117        &mut self,
 2118        path_prompt_options: PathPromptOptions,
 2119        lister: DirectoryLister,
 2120        window: &mut Window,
 2121        cx: &mut Context<Self>,
 2122    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2123        if !lister.is_local(cx) || !WorkspaceSettings::get_global(cx).use_system_path_prompts {
 2124            let prompt = self.on_prompt_for_open_path.take().unwrap();
 2125            let rx = prompt(self, lister, window, cx);
 2126            self.on_prompt_for_open_path = Some(prompt);
 2127            rx
 2128        } else {
 2129            let (tx, rx) = oneshot::channel();
 2130            let abs_path = cx.prompt_for_paths(path_prompt_options);
 2131
 2132            cx.spawn_in(window, async move |workspace, cx| {
 2133                let Ok(result) = abs_path.await else {
 2134                    return Ok(());
 2135                };
 2136
 2137                match result {
 2138                    Ok(result) => {
 2139                        tx.send(result).ok();
 2140                    }
 2141                    Err(err) => {
 2142                        let rx = workspace.update_in(cx, |workspace, window, cx| {
 2143                            workspace.show_portal_error(err.to_string(), cx);
 2144                            let prompt = workspace.on_prompt_for_open_path.take().unwrap();
 2145                            let rx = prompt(workspace, lister, window, cx);
 2146                            workspace.on_prompt_for_open_path = Some(prompt);
 2147                            rx
 2148                        })?;
 2149                        if let Ok(path) = rx.await {
 2150                            tx.send(path).ok();
 2151                        }
 2152                    }
 2153                };
 2154                anyhow::Ok(())
 2155            })
 2156            .detach();
 2157
 2158            rx
 2159        }
 2160    }
 2161
 2162    pub fn prompt_for_new_path(
 2163        &mut self,
 2164        lister: DirectoryLister,
 2165        suggested_name: Option<String>,
 2166        window: &mut Window,
 2167        cx: &mut Context<Self>,
 2168    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2169        if self.project.read(cx).is_via_collab()
 2170            || self.project.read(cx).is_via_remote_server()
 2171            || !WorkspaceSettings::get_global(cx).use_system_path_prompts
 2172        {
 2173            let prompt = self.on_prompt_for_new_path.take().unwrap();
 2174            let rx = prompt(self, lister, window, cx);
 2175            self.on_prompt_for_new_path = Some(prompt);
 2176            return rx;
 2177        }
 2178
 2179        let (tx, rx) = oneshot::channel();
 2180        cx.spawn_in(window, async move |workspace, cx| {
 2181            let abs_path = workspace.update(cx, |workspace, cx| {
 2182                let relative_to = workspace
 2183                    .most_recent_active_path(cx)
 2184                    .and_then(|p| p.parent().map(|p| p.to_path_buf()))
 2185                    .or_else(|| {
 2186                        let project = workspace.project.read(cx);
 2187                        project.visible_worktrees(cx).find_map(|worktree| {
 2188                            Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
 2189                        })
 2190                    })
 2191                    .or_else(std::env::home_dir)
 2192                    .unwrap_or_else(|| PathBuf::from(""));
 2193                cx.prompt_for_new_path(&relative_to, suggested_name.as_deref())
 2194            })?;
 2195            let abs_path = match abs_path.await? {
 2196                Ok(path) => path,
 2197                Err(err) => {
 2198                    let rx = workspace.update_in(cx, |workspace, window, cx| {
 2199                        workspace.show_portal_error(err.to_string(), cx);
 2200
 2201                        let prompt = workspace.on_prompt_for_new_path.take().unwrap();
 2202                        let rx = prompt(workspace, lister, window, cx);
 2203                        workspace.on_prompt_for_new_path = Some(prompt);
 2204                        rx
 2205                    })?;
 2206                    if let Ok(path) = rx.await {
 2207                        tx.send(path).ok();
 2208                    }
 2209                    return anyhow::Ok(());
 2210                }
 2211            };
 2212
 2213            tx.send(abs_path.map(|path| vec![path])).ok();
 2214            anyhow::Ok(())
 2215        })
 2216        .detach();
 2217
 2218        rx
 2219    }
 2220
 2221    pub fn titlebar_item(&self) -> Option<AnyView> {
 2222        self.titlebar_item.clone()
 2223    }
 2224
 2225    /// Call the given callback with a workspace whose project is local.
 2226    ///
 2227    /// If the given workspace has a local project, then it will be passed
 2228    /// to the callback. Otherwise, a new empty window will be created.
 2229    pub fn with_local_workspace<T, F>(
 2230        &mut self,
 2231        window: &mut Window,
 2232        cx: &mut Context<Self>,
 2233        callback: F,
 2234    ) -> Task<Result<T>>
 2235    where
 2236        T: 'static,
 2237        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
 2238    {
 2239        if self.project.read(cx).is_local() {
 2240            Task::ready(Ok(callback(self, window, cx)))
 2241        } else {
 2242            let env = self.project.read(cx).cli_environment(cx);
 2243            let task = Self::new_local(Vec::new(), self.app_state.clone(), None, env, cx);
 2244            cx.spawn_in(window, async move |_vh, cx| {
 2245                let (workspace, _) = task.await?;
 2246                workspace.update(cx, callback)
 2247            })
 2248        }
 2249    }
 2250
 2251    pub fn worktrees<'a>(&self, cx: &'a App) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2252        self.project.read(cx).worktrees(cx)
 2253    }
 2254
 2255    pub fn visible_worktrees<'a>(
 2256        &self,
 2257        cx: &'a App,
 2258    ) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2259        self.project.read(cx).visible_worktrees(cx)
 2260    }
 2261
 2262    #[cfg(any(test, feature = "test-support"))]
 2263    pub fn worktree_scans_complete(&self, cx: &App) -> impl Future<Output = ()> + 'static + use<> {
 2264        let futures = self
 2265            .worktrees(cx)
 2266            .filter_map(|worktree| worktree.read(cx).as_local())
 2267            .map(|worktree| worktree.scan_complete())
 2268            .collect::<Vec<_>>();
 2269        async move {
 2270            for future in futures {
 2271                future.await;
 2272            }
 2273        }
 2274    }
 2275
 2276    pub fn close_global(cx: &mut App) {
 2277        cx.defer(|cx| {
 2278            cx.windows().iter().find(|window| {
 2279                window
 2280                    .update(cx, |_, window, _| {
 2281                        if window.is_window_active() {
 2282                            //This can only get called when the window's project connection has been lost
 2283                            //so we don't need to prompt the user for anything and instead just close the window
 2284                            window.remove_window();
 2285                            true
 2286                        } else {
 2287                            false
 2288                        }
 2289                    })
 2290                    .unwrap_or(false)
 2291            });
 2292        });
 2293    }
 2294
 2295    pub fn close_window(&mut self, _: &CloseWindow, window: &mut Window, cx: &mut Context<Self>) {
 2296        let prepare = self.prepare_to_close(CloseIntent::CloseWindow, window, cx);
 2297        cx.spawn_in(window, async move |_, cx| {
 2298            if prepare.await? {
 2299                cx.update(|window, _cx| window.remove_window())?;
 2300            }
 2301            anyhow::Ok(())
 2302        })
 2303        .detach_and_log_err(cx)
 2304    }
 2305
 2306    pub fn move_focused_panel_to_next_position(
 2307        &mut self,
 2308        _: &MoveFocusedPanelToNextPosition,
 2309        window: &mut Window,
 2310        cx: &mut Context<Self>,
 2311    ) {
 2312        let docks = self.all_docks();
 2313        let active_dock = docks
 2314            .into_iter()
 2315            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 2316
 2317        if let Some(dock) = active_dock {
 2318            dock.update(cx, |dock, cx| {
 2319                let active_panel = dock
 2320                    .active_panel()
 2321                    .filter(|panel| panel.panel_focus_handle(cx).contains_focused(window, cx));
 2322
 2323                if let Some(panel) = active_panel {
 2324                    panel.move_to_next_position(window, cx);
 2325                }
 2326            })
 2327        }
 2328    }
 2329
 2330    pub fn prepare_to_close(
 2331        &mut self,
 2332        close_intent: CloseIntent,
 2333        window: &mut Window,
 2334        cx: &mut Context<Self>,
 2335    ) -> Task<Result<bool>> {
 2336        let active_call = self.active_call().cloned();
 2337
 2338        cx.spawn_in(window, async move |this, cx| {
 2339            this.update(cx, |this, _| {
 2340                if close_intent == CloseIntent::CloseWindow {
 2341                    this.removing = true;
 2342                }
 2343            })?;
 2344
 2345            let workspace_count = cx.update(|_window, cx| {
 2346                cx.windows()
 2347                    .iter()
 2348                    .filter(|window| window.downcast::<Workspace>().is_some())
 2349                    .count()
 2350            })?;
 2351
 2352            #[cfg(target_os = "macos")]
 2353            let save_last_workspace = false;
 2354
 2355            // On Linux and Windows, closing the last window should restore the last workspace.
 2356            #[cfg(not(target_os = "macos"))]
 2357            let save_last_workspace = {
 2358                let remaining_workspaces = cx.update(|_window, cx| {
 2359                    cx.windows()
 2360                        .iter()
 2361                        .filter_map(|window| window.downcast::<Workspace>())
 2362                        .filter_map(|workspace| {
 2363                            workspace
 2364                                .update(cx, |workspace, _, _| workspace.removing)
 2365                                .ok()
 2366                        })
 2367                        .filter(|removing| !removing)
 2368                        .count()
 2369                })?;
 2370
 2371                close_intent != CloseIntent::ReplaceWindow && remaining_workspaces == 0
 2372            };
 2373
 2374            if let Some(active_call) = active_call
 2375                && workspace_count == 1
 2376                && active_call.read_with(cx, |call, _| call.room().is_some())?
 2377            {
 2378                if close_intent == CloseIntent::CloseWindow {
 2379                    let answer = cx.update(|window, cx| {
 2380                        window.prompt(
 2381                            PromptLevel::Warning,
 2382                            "Do you want to leave the current call?",
 2383                            None,
 2384                            &["Close window and hang up", "Cancel"],
 2385                            cx,
 2386                        )
 2387                    })?;
 2388
 2389                    if answer.await.log_err() == Some(1) {
 2390                        return anyhow::Ok(false);
 2391                    } else {
 2392                        active_call
 2393                            .update(cx, |call, cx| call.hang_up(cx))?
 2394                            .await
 2395                            .log_err();
 2396                    }
 2397                }
 2398                if close_intent == CloseIntent::ReplaceWindow {
 2399                    _ = active_call.update(cx, |this, cx| {
 2400                        let workspace = cx
 2401                            .windows()
 2402                            .iter()
 2403                            .filter_map(|window| window.downcast::<Workspace>())
 2404                            .next()
 2405                            .unwrap();
 2406                        let project = workspace.read(cx)?.project.clone();
 2407                        if project.read(cx).is_shared() {
 2408                            this.unshare_project(project, cx)?;
 2409                        }
 2410                        Ok::<_, anyhow::Error>(())
 2411                    })?;
 2412                }
 2413            }
 2414
 2415            let save_result = this
 2416                .update_in(cx, |this, window, cx| {
 2417                    this.save_all_internal(SaveIntent::Close, window, cx)
 2418                })?
 2419                .await;
 2420
 2421            // If we're not quitting, but closing, we remove the workspace from
 2422            // the current session.
 2423            if close_intent != CloseIntent::Quit
 2424                && !save_last_workspace
 2425                && save_result.as_ref().is_ok_and(|&res| res)
 2426            {
 2427                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))?
 2428                    .await;
 2429            }
 2430
 2431            save_result
 2432        })
 2433    }
 2434
 2435    fn save_all(&mut self, action: &SaveAll, window: &mut Window, cx: &mut Context<Self>) {
 2436        self.save_all_internal(
 2437            action.save_intent.unwrap_or(SaveIntent::SaveAll),
 2438            window,
 2439            cx,
 2440        )
 2441        .detach_and_log_err(cx);
 2442    }
 2443
 2444    fn send_keystrokes(
 2445        &mut self,
 2446        action: &SendKeystrokes,
 2447        window: &mut Window,
 2448        cx: &mut Context<Self>,
 2449    ) {
 2450        let keystrokes: Vec<Keystroke> = action
 2451            .0
 2452            .split(' ')
 2453            .flat_map(|k| Keystroke::parse(k).log_err())
 2454            .collect();
 2455        let _ = self.send_keystrokes_impl(keystrokes, window, cx);
 2456    }
 2457
 2458    pub fn send_keystrokes_impl(
 2459        &mut self,
 2460        keystrokes: Vec<Keystroke>,
 2461        window: &mut Window,
 2462        cx: &mut Context<Self>,
 2463    ) -> Shared<Task<()>> {
 2464        let mut state = self.dispatching_keystrokes.borrow_mut();
 2465        if !state.dispatched.insert(keystrokes.clone()) {
 2466            cx.propagate();
 2467            return state.task.clone().unwrap();
 2468        }
 2469
 2470        state.queue.extend(keystrokes);
 2471
 2472        let keystrokes = self.dispatching_keystrokes.clone();
 2473        if state.task.is_none() {
 2474            state.task = Some(
 2475                window
 2476                    .spawn(cx, async move |cx| {
 2477                        // limit to 100 keystrokes to avoid infinite recursion.
 2478                        for _ in 0..100 {
 2479                            let mut state = keystrokes.borrow_mut();
 2480                            let Some(keystroke) = state.queue.pop_front() else {
 2481                                state.dispatched.clear();
 2482                                state.task.take();
 2483                                return;
 2484                            };
 2485                            drop(state);
 2486                            cx.update(|window, cx| {
 2487                                let focused = window.focused(cx);
 2488                                window.dispatch_keystroke(keystroke.clone(), cx);
 2489                                if window.focused(cx) != focused {
 2490                                    // dispatch_keystroke may cause the focus to change.
 2491                                    // draw's side effect is to schedule the FocusChanged events in the current flush effect cycle
 2492                                    // And we need that to happen before the next keystroke to keep vim mode happy...
 2493                                    // (Note that the tests always do this implicitly, so you must manually test with something like:
 2494                                    //   "bindings": { "g z": ["workspace::SendKeystrokes", ": j <enter> u"]}
 2495                                    // )
 2496                                    window.draw(cx).clear();
 2497                                }
 2498                            })
 2499                            .ok();
 2500                        }
 2501
 2502                        *keystrokes.borrow_mut() = Default::default();
 2503                        log::error!("over 100 keystrokes passed to send_keystrokes");
 2504                    })
 2505                    .shared(),
 2506            );
 2507        }
 2508        state.task.clone().unwrap()
 2509    }
 2510
 2511    fn save_all_internal(
 2512        &mut self,
 2513        mut save_intent: SaveIntent,
 2514        window: &mut Window,
 2515        cx: &mut Context<Self>,
 2516    ) -> Task<Result<bool>> {
 2517        if self.project.read(cx).is_disconnected(cx) {
 2518            return Task::ready(Ok(true));
 2519        }
 2520        let dirty_items = self
 2521            .panes
 2522            .iter()
 2523            .flat_map(|pane| {
 2524                pane.read(cx).items().filter_map(|item| {
 2525                    if item.is_dirty(cx) {
 2526                        item.tab_content_text(0, cx);
 2527                        Some((pane.downgrade(), item.boxed_clone()))
 2528                    } else {
 2529                        None
 2530                    }
 2531                })
 2532            })
 2533            .collect::<Vec<_>>();
 2534
 2535        let project = self.project.clone();
 2536        cx.spawn_in(window, async move |workspace, cx| {
 2537            let dirty_items = if save_intent == SaveIntent::Close && !dirty_items.is_empty() {
 2538                let (serialize_tasks, remaining_dirty_items) =
 2539                    workspace.update_in(cx, |workspace, window, cx| {
 2540                        let mut remaining_dirty_items = Vec::new();
 2541                        let mut serialize_tasks = Vec::new();
 2542                        for (pane, item) in dirty_items {
 2543                            if let Some(task) = item
 2544                                .to_serializable_item_handle(cx)
 2545                                .and_then(|handle| handle.serialize(workspace, true, window, cx))
 2546                            {
 2547                                serialize_tasks.push(task);
 2548                            } else {
 2549                                remaining_dirty_items.push((pane, item));
 2550                            }
 2551                        }
 2552                        (serialize_tasks, remaining_dirty_items)
 2553                    })?;
 2554
 2555                futures::future::try_join_all(serialize_tasks).await?;
 2556
 2557                if remaining_dirty_items.len() > 1 {
 2558                    let answer = workspace.update_in(cx, |_, window, cx| {
 2559                        let detail = Pane::file_names_for_prompt(
 2560                            &mut remaining_dirty_items.iter().map(|(_, handle)| handle),
 2561                            cx,
 2562                        );
 2563                        window.prompt(
 2564                            PromptLevel::Warning,
 2565                            "Do you want to save all changes in the following files?",
 2566                            Some(&detail),
 2567                            &["Save all", "Discard all", "Cancel"],
 2568                            cx,
 2569                        )
 2570                    })?;
 2571                    match answer.await.log_err() {
 2572                        Some(0) => save_intent = SaveIntent::SaveAll,
 2573                        Some(1) => save_intent = SaveIntent::Skip,
 2574                        Some(2) => return Ok(false),
 2575                        _ => {}
 2576                    }
 2577                }
 2578
 2579                remaining_dirty_items
 2580            } else {
 2581                dirty_items
 2582            };
 2583
 2584            for (pane, item) in dirty_items {
 2585                let (singleton, project_entry_ids) = cx.update(|_, cx| {
 2586                    (
 2587                        item.buffer_kind(cx) == ItemBufferKind::Singleton,
 2588                        item.project_entry_ids(cx),
 2589                    )
 2590                })?;
 2591                if (singleton || !project_entry_ids.is_empty())
 2592                    && !Pane::save_item(project.clone(), &pane, &*item, save_intent, cx).await?
 2593                {
 2594                    return Ok(false);
 2595                }
 2596            }
 2597            Ok(true)
 2598        })
 2599    }
 2600
 2601    pub fn open_workspace_for_paths(
 2602        &mut self,
 2603        replace_current_window: bool,
 2604        paths: Vec<PathBuf>,
 2605        window: &mut Window,
 2606        cx: &mut Context<Self>,
 2607    ) -> Task<Result<()>> {
 2608        let window_handle = window.window_handle().downcast::<Self>();
 2609        let is_remote = self.project.read(cx).is_via_collab();
 2610        let has_worktree = self.project.read(cx).worktrees(cx).next().is_some();
 2611        let has_dirty_items = self.items(cx).any(|item| item.is_dirty(cx));
 2612
 2613        let window_to_replace = if replace_current_window {
 2614            window_handle
 2615        } else if is_remote || has_worktree || has_dirty_items {
 2616            None
 2617        } else {
 2618            window_handle
 2619        };
 2620        let app_state = self.app_state.clone();
 2621
 2622        cx.spawn(async move |_, cx| {
 2623            cx.update(|cx| {
 2624                open_paths(
 2625                    &paths,
 2626                    app_state,
 2627                    OpenOptions {
 2628                        replace_window: window_to_replace,
 2629                        ..Default::default()
 2630                    },
 2631                    cx,
 2632                )
 2633            })?
 2634            .await?;
 2635            Ok(())
 2636        })
 2637    }
 2638
 2639    #[allow(clippy::type_complexity)]
 2640    pub fn open_paths(
 2641        &mut self,
 2642        mut abs_paths: Vec<PathBuf>,
 2643        options: OpenOptions,
 2644        pane: Option<WeakEntity<Pane>>,
 2645        window: &mut Window,
 2646        cx: &mut Context<Self>,
 2647    ) -> Task<Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>> {
 2648        let fs = self.app_state.fs.clone();
 2649
 2650        // Sort the paths to ensure we add worktrees for parents before their children.
 2651        abs_paths.sort_unstable();
 2652        cx.spawn_in(window, async move |this, cx| {
 2653            let mut tasks = Vec::with_capacity(abs_paths.len());
 2654
 2655            for abs_path in &abs_paths {
 2656                let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
 2657                    OpenVisible::All => Some(true),
 2658                    OpenVisible::None => Some(false),
 2659                    OpenVisible::OnlyFiles => match fs.metadata(abs_path).await.log_err() {
 2660                        Some(Some(metadata)) => Some(!metadata.is_dir),
 2661                        Some(None) => Some(true),
 2662                        None => None,
 2663                    },
 2664                    OpenVisible::OnlyDirectories => match fs.metadata(abs_path).await.log_err() {
 2665                        Some(Some(metadata)) => Some(metadata.is_dir),
 2666                        Some(None) => Some(false),
 2667                        None => None,
 2668                    },
 2669                };
 2670                let project_path = match visible {
 2671                    Some(visible) => match this
 2672                        .update(cx, |this, cx| {
 2673                            Workspace::project_path_for_path(
 2674                                this.project.clone(),
 2675                                abs_path,
 2676                                visible,
 2677                                cx,
 2678                            )
 2679                        })
 2680                        .log_err()
 2681                    {
 2682                        Some(project_path) => project_path.await.log_err(),
 2683                        None => None,
 2684                    },
 2685                    None => None,
 2686                };
 2687
 2688                let this = this.clone();
 2689                let abs_path: Arc<Path> = SanitizedPath::new(&abs_path).as_path().into();
 2690                let fs = fs.clone();
 2691                let pane = pane.clone();
 2692                let task = cx.spawn(async move |cx| {
 2693                    let (worktree, project_path) = project_path?;
 2694                    if fs.is_dir(&abs_path).await {
 2695                        this.update(cx, |workspace, cx| {
 2696                            let worktree = worktree.read(cx);
 2697                            let worktree_abs_path = worktree.abs_path();
 2698                            let entry_id = if abs_path.as_ref() == worktree_abs_path.as_ref() {
 2699                                worktree.root_entry()
 2700                            } else {
 2701                                abs_path
 2702                                    .strip_prefix(worktree_abs_path.as_ref())
 2703                                    .ok()
 2704                                    .and_then(|relative_path| {
 2705                                        let relative_path =
 2706                                            RelPath::new(relative_path, PathStyle::local())
 2707                                                .log_err()?;
 2708                                        worktree.entry_for_path(&relative_path)
 2709                                    })
 2710                            }
 2711                            .map(|entry| entry.id);
 2712                            if let Some(entry_id) = entry_id {
 2713                                workspace.project.update(cx, |_, cx| {
 2714                                    cx.emit(project::Event::ActiveEntryChanged(Some(entry_id)));
 2715                                })
 2716                            }
 2717                        })
 2718                        .ok()?;
 2719                        None
 2720                    } else {
 2721                        Some(
 2722                            this.update_in(cx, |this, window, cx| {
 2723                                this.open_path(
 2724                                    project_path,
 2725                                    pane,
 2726                                    options.focus.unwrap_or(true),
 2727                                    window,
 2728                                    cx,
 2729                                )
 2730                            })
 2731                            .ok()?
 2732                            .await,
 2733                        )
 2734                    }
 2735                });
 2736                tasks.push(task);
 2737            }
 2738
 2739            futures::future::join_all(tasks).await
 2740        })
 2741    }
 2742
 2743    pub fn open_resolved_path(
 2744        &mut self,
 2745        path: ResolvedPath,
 2746        window: &mut Window,
 2747        cx: &mut Context<Self>,
 2748    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 2749        match path {
 2750            ResolvedPath::ProjectPath { project_path, .. } => {
 2751                self.open_path(project_path, None, true, window, cx)
 2752            }
 2753            ResolvedPath::AbsPath { path, .. } => self.open_abs_path(
 2754                PathBuf::from(path),
 2755                OpenOptions {
 2756                    visible: Some(OpenVisible::None),
 2757                    ..Default::default()
 2758                },
 2759                window,
 2760                cx,
 2761            ),
 2762        }
 2763    }
 2764
 2765    pub fn absolute_path_of_worktree(
 2766        &self,
 2767        worktree_id: WorktreeId,
 2768        cx: &mut Context<Self>,
 2769    ) -> Option<PathBuf> {
 2770        self.project
 2771            .read(cx)
 2772            .worktree_for_id(worktree_id, cx)
 2773            // TODO: use `abs_path` or `root_dir`
 2774            .map(|wt| wt.read(cx).abs_path().as_ref().to_path_buf())
 2775    }
 2776
 2777    fn add_folder_to_project(
 2778        &mut self,
 2779        _: &AddFolderToProject,
 2780        window: &mut Window,
 2781        cx: &mut Context<Self>,
 2782    ) {
 2783        let project = self.project.read(cx);
 2784        if project.is_via_collab() {
 2785            self.show_error(
 2786                &anyhow!("You cannot add folders to someone else's project"),
 2787                cx,
 2788            );
 2789            return;
 2790        }
 2791        let paths = self.prompt_for_open_path(
 2792            PathPromptOptions {
 2793                files: false,
 2794                directories: true,
 2795                multiple: true,
 2796                prompt: None,
 2797            },
 2798            DirectoryLister::Project(self.project.clone()),
 2799            window,
 2800            cx,
 2801        );
 2802        cx.spawn_in(window, async move |this, cx| {
 2803            if let Some(paths) = paths.await.log_err().flatten() {
 2804                let results = this
 2805                    .update_in(cx, |this, window, cx| {
 2806                        this.open_paths(
 2807                            paths,
 2808                            OpenOptions {
 2809                                visible: Some(OpenVisible::All),
 2810                                ..Default::default()
 2811                            },
 2812                            None,
 2813                            window,
 2814                            cx,
 2815                        )
 2816                    })?
 2817                    .await;
 2818                for result in results.into_iter().flatten() {
 2819                    result.log_err();
 2820                }
 2821            }
 2822            anyhow::Ok(())
 2823        })
 2824        .detach_and_log_err(cx);
 2825    }
 2826
 2827    pub fn project_path_for_path(
 2828        project: Entity<Project>,
 2829        abs_path: &Path,
 2830        visible: bool,
 2831        cx: &mut App,
 2832    ) -> Task<Result<(Entity<Worktree>, ProjectPath)>> {
 2833        let entry = project.update(cx, |project, cx| {
 2834            project.find_or_create_worktree(abs_path, visible, cx)
 2835        });
 2836        cx.spawn(async move |cx| {
 2837            let (worktree, path) = entry.await?;
 2838            let worktree_id = worktree.read_with(cx, |t, _| t.id())?;
 2839            Ok((
 2840                worktree,
 2841                ProjectPath {
 2842                    worktree_id,
 2843                    path: path,
 2844                },
 2845            ))
 2846        })
 2847    }
 2848
 2849    pub fn items<'a>(&'a self, cx: &'a App) -> impl 'a + Iterator<Item = &'a Box<dyn ItemHandle>> {
 2850        self.panes.iter().flat_map(|pane| pane.read(cx).items())
 2851    }
 2852
 2853    pub fn item_of_type<T: Item>(&self, cx: &App) -> Option<Entity<T>> {
 2854        self.items_of_type(cx).max_by_key(|item| item.item_id())
 2855    }
 2856
 2857    pub fn items_of_type<'a, T: Item>(
 2858        &'a self,
 2859        cx: &'a App,
 2860    ) -> impl 'a + Iterator<Item = Entity<T>> {
 2861        self.panes
 2862            .iter()
 2863            .flat_map(|pane| pane.read(cx).items_of_type())
 2864    }
 2865
 2866    pub fn active_item(&self, cx: &App) -> Option<Box<dyn ItemHandle>> {
 2867        self.active_pane().read(cx).active_item()
 2868    }
 2869
 2870    pub fn active_item_as<I: 'static>(&self, cx: &App) -> Option<Entity<I>> {
 2871        let item = self.active_item(cx)?;
 2872        item.to_any().downcast::<I>().ok()
 2873    }
 2874
 2875    fn active_project_path(&self, cx: &App) -> Option<ProjectPath> {
 2876        self.active_item(cx).and_then(|item| item.project_path(cx))
 2877    }
 2878
 2879    pub fn most_recent_active_path(&self, cx: &App) -> Option<PathBuf> {
 2880        self.recent_navigation_history_iter(cx)
 2881            .filter_map(|(path, abs_path)| {
 2882                let worktree = self
 2883                    .project
 2884                    .read(cx)
 2885                    .worktree_for_id(path.worktree_id, cx)?;
 2886                if worktree.read(cx).is_visible() {
 2887                    abs_path
 2888                } else {
 2889                    None
 2890                }
 2891            })
 2892            .next()
 2893    }
 2894
 2895    pub fn save_active_item(
 2896        &mut self,
 2897        save_intent: SaveIntent,
 2898        window: &mut Window,
 2899        cx: &mut App,
 2900    ) -> Task<Result<()>> {
 2901        let project = self.project.clone();
 2902        let pane = self.active_pane();
 2903        let item = pane.read(cx).active_item();
 2904        let pane = pane.downgrade();
 2905
 2906        window.spawn(cx, async move |cx| {
 2907            if let Some(item) = item {
 2908                Pane::save_item(project, &pane, item.as_ref(), save_intent, cx)
 2909                    .await
 2910                    .map(|_| ())
 2911            } else {
 2912                Ok(())
 2913            }
 2914        })
 2915    }
 2916
 2917    pub fn close_inactive_items_and_panes(
 2918        &mut self,
 2919        action: &CloseInactiveTabsAndPanes,
 2920        window: &mut Window,
 2921        cx: &mut Context<Self>,
 2922    ) {
 2923        if let Some(task) = self.close_all_internal(
 2924            true,
 2925            action.save_intent.unwrap_or(SaveIntent::Close),
 2926            window,
 2927            cx,
 2928        ) {
 2929            task.detach_and_log_err(cx)
 2930        }
 2931    }
 2932
 2933    pub fn close_all_items_and_panes(
 2934        &mut self,
 2935        action: &CloseAllItemsAndPanes,
 2936        window: &mut Window,
 2937        cx: &mut Context<Self>,
 2938    ) {
 2939        if let Some(task) = self.close_all_internal(
 2940            false,
 2941            action.save_intent.unwrap_or(SaveIntent::Close),
 2942            window,
 2943            cx,
 2944        ) {
 2945            task.detach_and_log_err(cx)
 2946        }
 2947    }
 2948
 2949    fn close_all_internal(
 2950        &mut self,
 2951        retain_active_pane: bool,
 2952        save_intent: SaveIntent,
 2953        window: &mut Window,
 2954        cx: &mut Context<Self>,
 2955    ) -> Option<Task<Result<()>>> {
 2956        let current_pane = self.active_pane();
 2957
 2958        let mut tasks = Vec::new();
 2959
 2960        if retain_active_pane {
 2961            let current_pane_close = current_pane.update(cx, |pane, cx| {
 2962                pane.close_other_items(
 2963                    &CloseOtherItems {
 2964                        save_intent: None,
 2965                        close_pinned: false,
 2966                    },
 2967                    None,
 2968                    window,
 2969                    cx,
 2970                )
 2971            });
 2972
 2973            tasks.push(current_pane_close);
 2974        }
 2975
 2976        for pane in self.panes() {
 2977            if retain_active_pane && pane.entity_id() == current_pane.entity_id() {
 2978                continue;
 2979            }
 2980
 2981            let close_pane_items = pane.update(cx, |pane: &mut Pane, cx| {
 2982                pane.close_all_items(
 2983                    &CloseAllItems {
 2984                        save_intent: Some(save_intent),
 2985                        close_pinned: false,
 2986                    },
 2987                    window,
 2988                    cx,
 2989                )
 2990            });
 2991
 2992            tasks.push(close_pane_items)
 2993        }
 2994
 2995        if tasks.is_empty() {
 2996            None
 2997        } else {
 2998            Some(cx.spawn_in(window, async move |_, _| {
 2999                for task in tasks {
 3000                    task.await?
 3001                }
 3002                Ok(())
 3003            }))
 3004        }
 3005    }
 3006
 3007    pub fn is_dock_at_position_open(&self, position: DockPosition, cx: &mut Context<Self>) -> bool {
 3008        self.dock_at_position(position).read(cx).is_open()
 3009    }
 3010
 3011    pub fn toggle_dock(
 3012        &mut self,
 3013        dock_side: DockPosition,
 3014        window: &mut Window,
 3015        cx: &mut Context<Self>,
 3016    ) {
 3017        let mut focus_center = false;
 3018        let mut reveal_dock = false;
 3019
 3020        let other_is_zoomed = self.zoomed.is_some() && self.zoomed_position != Some(dock_side);
 3021        let was_visible = self.is_dock_at_position_open(dock_side, cx) && !other_is_zoomed;
 3022        if was_visible {
 3023            self.save_open_dock_positions(cx);
 3024        }
 3025
 3026        let dock = self.dock_at_position(dock_side);
 3027        dock.update(cx, |dock, cx| {
 3028            dock.set_open(!was_visible, window, cx);
 3029
 3030            if dock.active_panel().is_none() {
 3031                let Some(panel_ix) = dock
 3032                    .first_enabled_panel_idx(cx)
 3033                    .log_with_level(log::Level::Info)
 3034                else {
 3035                    return;
 3036                };
 3037                dock.activate_panel(panel_ix, window, cx);
 3038            }
 3039
 3040            if let Some(active_panel) = dock.active_panel() {
 3041                if was_visible {
 3042                    if active_panel
 3043                        .panel_focus_handle(cx)
 3044                        .contains_focused(window, cx)
 3045                    {
 3046                        focus_center = true;
 3047                    }
 3048                } else {
 3049                    let focus_handle = &active_panel.panel_focus_handle(cx);
 3050                    window.focus(focus_handle);
 3051                    reveal_dock = true;
 3052                }
 3053            }
 3054        });
 3055
 3056        if reveal_dock {
 3057            self.dismiss_zoomed_items_to_reveal(Some(dock_side), window, cx);
 3058        }
 3059
 3060        if focus_center {
 3061            self.active_pane
 3062                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3063        }
 3064
 3065        cx.notify();
 3066        self.serialize_workspace(window, cx);
 3067    }
 3068
 3069    fn active_dock(&self, window: &Window, cx: &Context<Self>) -> Option<&Entity<Dock>> {
 3070        self.all_docks().into_iter().find(|&dock| {
 3071            dock.read(cx).is_open() && dock.focus_handle(cx).contains_focused(window, cx)
 3072        })
 3073    }
 3074
 3075    fn close_active_dock(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
 3076        if let Some(dock) = self.active_dock(window, cx).cloned() {
 3077            self.save_open_dock_positions(cx);
 3078            dock.update(cx, |dock, cx| {
 3079                dock.set_open(false, window, cx);
 3080            });
 3081            return true;
 3082        }
 3083        false
 3084    }
 3085
 3086    pub fn close_all_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3087        self.save_open_dock_positions(cx);
 3088        for dock in self.all_docks() {
 3089            dock.update(cx, |dock, cx| {
 3090                dock.set_open(false, window, cx);
 3091            });
 3092        }
 3093
 3094        cx.focus_self(window);
 3095        cx.notify();
 3096        self.serialize_workspace(window, cx);
 3097    }
 3098
 3099    fn get_open_dock_positions(&self, cx: &Context<Self>) -> Vec<DockPosition> {
 3100        self.all_docks()
 3101            .into_iter()
 3102            .filter_map(|dock| {
 3103                let dock_ref = dock.read(cx);
 3104                if dock_ref.is_open() {
 3105                    Some(dock_ref.position())
 3106                } else {
 3107                    None
 3108                }
 3109            })
 3110            .collect()
 3111    }
 3112
 3113    /// Saves the positions of currently open docks.
 3114    ///
 3115    /// Updates `last_open_dock_positions` with positions of all currently open
 3116    /// docks, to later be restored by the 'Toggle All Docks' action.
 3117    fn save_open_dock_positions(&mut self, cx: &mut Context<Self>) {
 3118        let open_dock_positions = self.get_open_dock_positions(cx);
 3119        if !open_dock_positions.is_empty() {
 3120            self.last_open_dock_positions = open_dock_positions;
 3121        }
 3122    }
 3123
 3124    /// Toggles all docks between open and closed states.
 3125    ///
 3126    /// If any docks are open, closes all and remembers their positions. If all
 3127    /// docks are closed, restores the last remembered dock configuration.
 3128    fn toggle_all_docks(
 3129        &mut self,
 3130        _: &ToggleAllDocks,
 3131        window: &mut Window,
 3132        cx: &mut Context<Self>,
 3133    ) {
 3134        let open_dock_positions = self.get_open_dock_positions(cx);
 3135
 3136        if !open_dock_positions.is_empty() {
 3137            self.close_all_docks(window, cx);
 3138        } else if !self.last_open_dock_positions.is_empty() {
 3139            self.restore_last_open_docks(window, cx);
 3140        }
 3141    }
 3142
 3143    /// Reopens docks from the most recently remembered configuration.
 3144    ///
 3145    /// Opens all docks whose positions are stored in `last_open_dock_positions`
 3146    /// and clears the stored positions.
 3147    fn restore_last_open_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3148        let positions_to_open = std::mem::take(&mut self.last_open_dock_positions);
 3149
 3150        for position in positions_to_open {
 3151            let dock = self.dock_at_position(position);
 3152            dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
 3153        }
 3154
 3155        cx.focus_self(window);
 3156        cx.notify();
 3157        self.serialize_workspace(window, cx);
 3158    }
 3159
 3160    /// Transfer focus to the panel of the given type.
 3161    pub fn focus_panel<T: Panel>(
 3162        &mut self,
 3163        window: &mut Window,
 3164        cx: &mut Context<Self>,
 3165    ) -> Option<Entity<T>> {
 3166        let panel = self.focus_or_unfocus_panel::<T>(window, cx, |_, _, _| true)?;
 3167        panel.to_any().downcast().ok()
 3168    }
 3169
 3170    /// Focus the panel of the given type if it isn't already focused. If it is
 3171    /// already focused, then transfer focus back to the workspace center.
 3172    pub fn toggle_panel_focus<T: Panel>(
 3173        &mut self,
 3174        window: &mut Window,
 3175        cx: &mut Context<Self>,
 3176    ) -> bool {
 3177        let mut did_focus_panel = false;
 3178        self.focus_or_unfocus_panel::<T>(window, cx, |panel, window, cx| {
 3179            did_focus_panel = !panel.panel_focus_handle(cx).contains_focused(window, cx);
 3180            did_focus_panel
 3181        });
 3182        did_focus_panel
 3183    }
 3184
 3185    pub fn activate_panel_for_proto_id(
 3186        &mut self,
 3187        panel_id: PanelId,
 3188        window: &mut Window,
 3189        cx: &mut Context<Self>,
 3190    ) -> Option<Arc<dyn PanelHandle>> {
 3191        let mut panel = None;
 3192        for dock in self.all_docks() {
 3193            if let Some(panel_index) = dock.read(cx).panel_index_for_proto_id(panel_id) {
 3194                panel = dock.update(cx, |dock, cx| {
 3195                    dock.activate_panel(panel_index, window, cx);
 3196                    dock.set_open(true, window, cx);
 3197                    dock.active_panel().cloned()
 3198                });
 3199                break;
 3200            }
 3201        }
 3202
 3203        if panel.is_some() {
 3204            cx.notify();
 3205            self.serialize_workspace(window, cx);
 3206        }
 3207
 3208        panel
 3209    }
 3210
 3211    /// Focus or unfocus the given panel type, depending on the given callback.
 3212    fn focus_or_unfocus_panel<T: Panel>(
 3213        &mut self,
 3214        window: &mut Window,
 3215        cx: &mut Context<Self>,
 3216        mut should_focus: impl FnMut(&dyn PanelHandle, &mut Window, &mut Context<Dock>) -> bool,
 3217    ) -> Option<Arc<dyn PanelHandle>> {
 3218        let mut result_panel = None;
 3219        let mut serialize = false;
 3220        for dock in self.all_docks() {
 3221            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3222                let mut focus_center = false;
 3223                let panel = dock.update(cx, |dock, cx| {
 3224                    dock.activate_panel(panel_index, window, cx);
 3225
 3226                    let panel = dock.active_panel().cloned();
 3227                    if let Some(panel) = panel.as_ref() {
 3228                        if should_focus(&**panel, window, cx) {
 3229                            dock.set_open(true, window, cx);
 3230                            panel.panel_focus_handle(cx).focus(window);
 3231                        } else {
 3232                            focus_center = true;
 3233                        }
 3234                    }
 3235                    panel
 3236                });
 3237
 3238                if focus_center {
 3239                    self.active_pane
 3240                        .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3241                }
 3242
 3243                result_panel = panel;
 3244                serialize = true;
 3245                break;
 3246            }
 3247        }
 3248
 3249        if serialize {
 3250            self.serialize_workspace(window, cx);
 3251        }
 3252
 3253        cx.notify();
 3254        result_panel
 3255    }
 3256
 3257    /// Open the panel of the given type
 3258    pub fn open_panel<T: Panel>(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3259        for dock in self.all_docks() {
 3260            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3261                dock.update(cx, |dock, cx| {
 3262                    dock.activate_panel(panel_index, window, cx);
 3263                    dock.set_open(true, window, cx);
 3264                });
 3265            }
 3266        }
 3267    }
 3268
 3269    pub fn close_panel<T: Panel>(&self, window: &mut Window, cx: &mut Context<Self>) {
 3270        for dock in self.all_docks().iter() {
 3271            dock.update(cx, |dock, cx| {
 3272                if dock.panel::<T>().is_some() {
 3273                    dock.set_open(false, window, cx)
 3274                }
 3275            })
 3276        }
 3277    }
 3278
 3279    pub fn panel<T: Panel>(&self, cx: &App) -> Option<Entity<T>> {
 3280        self.all_docks()
 3281            .iter()
 3282            .find_map(|dock| dock.read(cx).panel::<T>())
 3283    }
 3284
 3285    fn dismiss_zoomed_items_to_reveal(
 3286        &mut self,
 3287        dock_to_reveal: Option<DockPosition>,
 3288        window: &mut Window,
 3289        cx: &mut Context<Self>,
 3290    ) {
 3291        // If a center pane is zoomed, unzoom it.
 3292        for pane in &self.panes {
 3293            if pane != &self.active_pane || dock_to_reveal.is_some() {
 3294                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 3295            }
 3296        }
 3297
 3298        // If another dock is zoomed, hide it.
 3299        let mut focus_center = false;
 3300        for dock in self.all_docks() {
 3301            dock.update(cx, |dock, cx| {
 3302                if Some(dock.position()) != dock_to_reveal
 3303                    && let Some(panel) = dock.active_panel()
 3304                    && panel.is_zoomed(window, cx)
 3305                {
 3306                    focus_center |= panel.panel_focus_handle(cx).contains_focused(window, cx);
 3307                    dock.set_open(false, window, cx);
 3308                }
 3309            });
 3310        }
 3311
 3312        if focus_center {
 3313            self.active_pane
 3314                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3315        }
 3316
 3317        if self.zoomed_position != dock_to_reveal {
 3318            self.zoomed = None;
 3319            self.zoomed_position = None;
 3320            cx.emit(Event::ZoomChanged);
 3321        }
 3322
 3323        cx.notify();
 3324    }
 3325
 3326    fn add_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 3327        let pane = cx.new(|cx| {
 3328            let mut pane = Pane::new(
 3329                self.weak_handle(),
 3330                self.project.clone(),
 3331                self.pane_history_timestamp.clone(),
 3332                None,
 3333                NewFile.boxed_clone(),
 3334                true,
 3335                window,
 3336                cx,
 3337            );
 3338            pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 3339            pane
 3340        });
 3341        cx.subscribe_in(&pane, window, Self::handle_pane_event)
 3342            .detach();
 3343        self.panes.push(pane.clone());
 3344
 3345        window.focus(&pane.focus_handle(cx));
 3346
 3347        cx.emit(Event::PaneAdded(pane.clone()));
 3348        pane
 3349    }
 3350
 3351    pub fn add_item_to_center(
 3352        &mut self,
 3353        item: Box<dyn ItemHandle>,
 3354        window: &mut Window,
 3355        cx: &mut Context<Self>,
 3356    ) -> bool {
 3357        if let Some(center_pane) = self.last_active_center_pane.clone() {
 3358            if let Some(center_pane) = center_pane.upgrade() {
 3359                center_pane.update(cx, |pane, cx| {
 3360                    pane.add_item(item, true, true, None, window, cx)
 3361                });
 3362                true
 3363            } else {
 3364                false
 3365            }
 3366        } else {
 3367            false
 3368        }
 3369    }
 3370
 3371    pub fn add_item_to_active_pane(
 3372        &mut self,
 3373        item: Box<dyn ItemHandle>,
 3374        destination_index: Option<usize>,
 3375        focus_item: bool,
 3376        window: &mut Window,
 3377        cx: &mut App,
 3378    ) {
 3379        self.add_item(
 3380            self.active_pane.clone(),
 3381            item,
 3382            destination_index,
 3383            false,
 3384            focus_item,
 3385            window,
 3386            cx,
 3387        )
 3388    }
 3389
 3390    pub fn add_item(
 3391        &mut self,
 3392        pane: Entity<Pane>,
 3393        item: Box<dyn ItemHandle>,
 3394        destination_index: Option<usize>,
 3395        activate_pane: bool,
 3396        focus_item: bool,
 3397        window: &mut Window,
 3398        cx: &mut App,
 3399    ) {
 3400        pane.update(cx, |pane, cx| {
 3401            pane.add_item(
 3402                item,
 3403                activate_pane,
 3404                focus_item,
 3405                destination_index,
 3406                window,
 3407                cx,
 3408            )
 3409        });
 3410    }
 3411
 3412    pub fn split_item(
 3413        &mut self,
 3414        split_direction: SplitDirection,
 3415        item: Box<dyn ItemHandle>,
 3416        window: &mut Window,
 3417        cx: &mut Context<Self>,
 3418    ) {
 3419        let new_pane = self.split_pane(self.active_pane.clone(), split_direction, window, cx);
 3420        self.add_item(new_pane, item, None, true, true, window, cx);
 3421    }
 3422
 3423    pub fn open_abs_path(
 3424        &mut self,
 3425        abs_path: PathBuf,
 3426        options: OpenOptions,
 3427        window: &mut Window,
 3428        cx: &mut Context<Self>,
 3429    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3430        cx.spawn_in(window, async move |workspace, cx| {
 3431            let open_paths_task_result = workspace
 3432                .update_in(cx, |workspace, window, cx| {
 3433                    workspace.open_paths(vec![abs_path.clone()], options, None, window, cx)
 3434                })
 3435                .with_context(|| format!("open abs path {abs_path:?} task spawn"))?
 3436                .await;
 3437            anyhow::ensure!(
 3438                open_paths_task_result.len() == 1,
 3439                "open abs path {abs_path:?} task returned incorrect number of results"
 3440            );
 3441            match open_paths_task_result
 3442                .into_iter()
 3443                .next()
 3444                .expect("ensured single task result")
 3445            {
 3446                Some(open_result) => {
 3447                    open_result.with_context(|| format!("open abs path {abs_path:?} task join"))
 3448                }
 3449                None => anyhow::bail!("open abs path {abs_path:?} task returned None"),
 3450            }
 3451        })
 3452    }
 3453
 3454    pub fn split_abs_path(
 3455        &mut self,
 3456        abs_path: PathBuf,
 3457        visible: bool,
 3458        window: &mut Window,
 3459        cx: &mut Context<Self>,
 3460    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3461        let project_path_task =
 3462            Workspace::project_path_for_path(self.project.clone(), &abs_path, visible, cx);
 3463        cx.spawn_in(window, async move |this, cx| {
 3464            let (_, path) = project_path_task.await?;
 3465            this.update_in(cx, |this, window, cx| this.split_path(path, window, cx))?
 3466                .await
 3467        })
 3468    }
 3469
 3470    pub fn open_path(
 3471        &mut self,
 3472        path: impl Into<ProjectPath>,
 3473        pane: Option<WeakEntity<Pane>>,
 3474        focus_item: bool,
 3475        window: &mut Window,
 3476        cx: &mut App,
 3477    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3478        self.open_path_preview(path, pane, focus_item, false, true, window, cx)
 3479    }
 3480
 3481    pub fn open_path_preview(
 3482        &mut self,
 3483        path: impl Into<ProjectPath>,
 3484        pane: Option<WeakEntity<Pane>>,
 3485        focus_item: bool,
 3486        allow_preview: bool,
 3487        activate: bool,
 3488        window: &mut Window,
 3489        cx: &mut App,
 3490    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3491        let pane = pane.unwrap_or_else(|| {
 3492            self.last_active_center_pane.clone().unwrap_or_else(|| {
 3493                self.panes
 3494                    .first()
 3495                    .expect("There must be an active pane")
 3496                    .downgrade()
 3497            })
 3498        });
 3499
 3500        let project_path = path.into();
 3501        let task = self.load_path(project_path.clone(), window, cx);
 3502        window.spawn(cx, async move |cx| {
 3503            let (project_entry_id, build_item) = task.await?;
 3504
 3505            pane.update_in(cx, |pane, window, cx| {
 3506                pane.open_item(
 3507                    project_entry_id,
 3508                    project_path,
 3509                    focus_item,
 3510                    allow_preview,
 3511                    activate,
 3512                    None,
 3513                    window,
 3514                    cx,
 3515                    build_item,
 3516                )
 3517            })
 3518        })
 3519    }
 3520
 3521    pub fn split_path(
 3522        &mut self,
 3523        path: impl Into<ProjectPath>,
 3524        window: &mut Window,
 3525        cx: &mut Context<Self>,
 3526    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3527        self.split_path_preview(path, false, None, window, cx)
 3528    }
 3529
 3530    pub fn split_path_preview(
 3531        &mut self,
 3532        path: impl Into<ProjectPath>,
 3533        allow_preview: bool,
 3534        split_direction: Option<SplitDirection>,
 3535        window: &mut Window,
 3536        cx: &mut Context<Self>,
 3537    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3538        let pane = self.last_active_center_pane.clone().unwrap_or_else(|| {
 3539            self.panes
 3540                .first()
 3541                .expect("There must be an active pane")
 3542                .downgrade()
 3543        });
 3544
 3545        if let Member::Pane(center_pane) = &self.center.root
 3546            && center_pane.read(cx).items_len() == 0
 3547        {
 3548            return self.open_path(path, Some(pane), true, window, cx);
 3549        }
 3550
 3551        let project_path = path.into();
 3552        let task = self.load_path(project_path.clone(), window, cx);
 3553        cx.spawn_in(window, async move |this, cx| {
 3554            let (project_entry_id, build_item) = task.await?;
 3555            this.update_in(cx, move |this, window, cx| -> Option<_> {
 3556                let pane = pane.upgrade()?;
 3557                let new_pane = this.split_pane(
 3558                    pane,
 3559                    split_direction.unwrap_or(SplitDirection::Right),
 3560                    window,
 3561                    cx,
 3562                );
 3563                new_pane.update(cx, |new_pane, cx| {
 3564                    Some(new_pane.open_item(
 3565                        project_entry_id,
 3566                        project_path,
 3567                        true,
 3568                        allow_preview,
 3569                        true,
 3570                        None,
 3571                        window,
 3572                        cx,
 3573                        build_item,
 3574                    ))
 3575                })
 3576            })
 3577            .map(|option| option.context("pane was dropped"))?
 3578        })
 3579    }
 3580
 3581    fn load_path(
 3582        &mut self,
 3583        path: ProjectPath,
 3584        window: &mut Window,
 3585        cx: &mut App,
 3586    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
 3587        let registry = cx.default_global::<ProjectItemRegistry>().clone();
 3588        registry.open_path(self.project(), &path, window, cx)
 3589    }
 3590
 3591    pub fn find_project_item<T>(
 3592        &self,
 3593        pane: &Entity<Pane>,
 3594        project_item: &Entity<T::Item>,
 3595        cx: &App,
 3596    ) -> Option<Entity<T>>
 3597    where
 3598        T: ProjectItem,
 3599    {
 3600        use project::ProjectItem as _;
 3601        let project_item = project_item.read(cx);
 3602        let entry_id = project_item.entry_id(cx);
 3603        let project_path = project_item.project_path(cx);
 3604
 3605        let mut item = None;
 3606        if let Some(entry_id) = entry_id {
 3607            item = pane.read(cx).item_for_entry(entry_id, cx);
 3608        }
 3609        if item.is_none()
 3610            && let Some(project_path) = project_path
 3611        {
 3612            item = pane.read(cx).item_for_path(project_path, cx);
 3613        }
 3614
 3615        item.and_then(|item| item.downcast::<T>())
 3616    }
 3617
 3618    pub fn is_project_item_open<T>(
 3619        &self,
 3620        pane: &Entity<Pane>,
 3621        project_item: &Entity<T::Item>,
 3622        cx: &App,
 3623    ) -> bool
 3624    where
 3625        T: ProjectItem,
 3626    {
 3627        self.find_project_item::<T>(pane, project_item, cx)
 3628            .is_some()
 3629    }
 3630
 3631    pub fn open_project_item<T>(
 3632        &mut self,
 3633        pane: Entity<Pane>,
 3634        project_item: Entity<T::Item>,
 3635        activate_pane: bool,
 3636        focus_item: bool,
 3637        window: &mut Window,
 3638        cx: &mut Context<Self>,
 3639    ) -> Entity<T>
 3640    where
 3641        T: ProjectItem,
 3642    {
 3643        if let Some(item) = self.find_project_item(&pane, &project_item, cx) {
 3644            self.activate_item(&item, activate_pane, focus_item, window, cx);
 3645            return item;
 3646        }
 3647
 3648        let item = pane.update(cx, |pane, cx| {
 3649            cx.new(|cx| {
 3650                T::for_project_item(self.project().clone(), Some(pane), project_item, window, cx)
 3651            })
 3652        });
 3653        let item_id = item.item_id();
 3654        let mut destination_index = None;
 3655        pane.update(cx, |pane, cx| {
 3656            if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation
 3657                && let Some(preview_item_id) = pane.preview_item_id()
 3658                && preview_item_id != item_id
 3659            {
 3660                destination_index = pane.close_current_preview_item(window, cx);
 3661            }
 3662            pane.set_preview_item_id(Some(item.item_id()), cx)
 3663        });
 3664
 3665        self.add_item(
 3666            pane,
 3667            Box::new(item.clone()),
 3668            destination_index,
 3669            activate_pane,
 3670            focus_item,
 3671            window,
 3672            cx,
 3673        );
 3674        item
 3675    }
 3676
 3677    pub fn open_shared_screen(
 3678        &mut self,
 3679        peer_id: PeerId,
 3680        window: &mut Window,
 3681        cx: &mut Context<Self>,
 3682    ) {
 3683        if let Some(shared_screen) =
 3684            self.shared_screen_for_peer(peer_id, &self.active_pane, window, cx)
 3685        {
 3686            self.active_pane.update(cx, |pane, cx| {
 3687                pane.add_item(Box::new(shared_screen), false, true, None, window, cx)
 3688            });
 3689        }
 3690    }
 3691
 3692    pub fn activate_item(
 3693        &mut self,
 3694        item: &dyn ItemHandle,
 3695        activate_pane: bool,
 3696        focus_item: bool,
 3697        window: &mut Window,
 3698        cx: &mut App,
 3699    ) -> bool {
 3700        let result = self.panes.iter().find_map(|pane| {
 3701            pane.read(cx)
 3702                .index_for_item(item)
 3703                .map(|ix| (pane.clone(), ix))
 3704        });
 3705        if let Some((pane, ix)) = result {
 3706            pane.update(cx, |pane, cx| {
 3707                pane.activate_item(ix, activate_pane, focus_item, window, cx)
 3708            });
 3709            true
 3710        } else {
 3711            false
 3712        }
 3713    }
 3714
 3715    fn activate_pane_at_index(
 3716        &mut self,
 3717        action: &ActivatePane,
 3718        window: &mut Window,
 3719        cx: &mut Context<Self>,
 3720    ) {
 3721        let panes = self.center.panes();
 3722        if let Some(pane) = panes.get(action.0).map(|p| (*p).clone()) {
 3723            window.focus(&pane.focus_handle(cx));
 3724        } else {
 3725            self.split_and_clone(self.active_pane.clone(), SplitDirection::Right, window, cx)
 3726                .detach();
 3727        }
 3728    }
 3729
 3730    fn move_item_to_pane_at_index(
 3731        &mut self,
 3732        action: &MoveItemToPane,
 3733        window: &mut Window,
 3734        cx: &mut Context<Self>,
 3735    ) {
 3736        let panes = self.center.panes();
 3737        let destination = match panes.get(action.destination) {
 3738            Some(&destination) => destination.clone(),
 3739            None => {
 3740                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3741                    return;
 3742                }
 3743                let direction = SplitDirection::Right;
 3744                let split_off_pane = self
 3745                    .find_pane_in_direction(direction, cx)
 3746                    .unwrap_or_else(|| self.active_pane.clone());
 3747                let new_pane = self.add_pane(window, cx);
 3748                if self
 3749                    .center
 3750                    .split(&split_off_pane, &new_pane, direction)
 3751                    .log_err()
 3752                    .is_none()
 3753                {
 3754                    return;
 3755                };
 3756                new_pane
 3757            }
 3758        };
 3759
 3760        if action.clone {
 3761            if self
 3762                .active_pane
 3763                .read(cx)
 3764                .active_item()
 3765                .is_some_and(|item| item.can_split(cx))
 3766            {
 3767                clone_active_item(
 3768                    self.database_id(),
 3769                    &self.active_pane,
 3770                    &destination,
 3771                    action.focus,
 3772                    window,
 3773                    cx,
 3774                );
 3775                return;
 3776            }
 3777        }
 3778        move_active_item(
 3779            &self.active_pane,
 3780            &destination,
 3781            action.focus,
 3782            true,
 3783            window,
 3784            cx,
 3785        )
 3786    }
 3787
 3788    pub fn activate_next_pane(&mut self, window: &mut Window, cx: &mut App) {
 3789        let panes = self.center.panes();
 3790        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3791            let next_ix = (ix + 1) % panes.len();
 3792            let next_pane = panes[next_ix].clone();
 3793            window.focus(&next_pane.focus_handle(cx));
 3794        }
 3795    }
 3796
 3797    pub fn activate_previous_pane(&mut self, window: &mut Window, cx: &mut App) {
 3798        let panes = self.center.panes();
 3799        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3800            let prev_ix = cmp::min(ix.wrapping_sub(1), panes.len() - 1);
 3801            let prev_pane = panes[prev_ix].clone();
 3802            window.focus(&prev_pane.focus_handle(cx));
 3803        }
 3804    }
 3805
 3806    pub fn activate_pane_in_direction(
 3807        &mut self,
 3808        direction: SplitDirection,
 3809        window: &mut Window,
 3810        cx: &mut App,
 3811    ) {
 3812        use ActivateInDirectionTarget as Target;
 3813        enum Origin {
 3814            LeftDock,
 3815            RightDock,
 3816            BottomDock,
 3817            Center,
 3818        }
 3819
 3820        let origin: Origin = [
 3821            (&self.left_dock, Origin::LeftDock),
 3822            (&self.right_dock, Origin::RightDock),
 3823            (&self.bottom_dock, Origin::BottomDock),
 3824        ]
 3825        .into_iter()
 3826        .find_map(|(dock, origin)| {
 3827            if dock.focus_handle(cx).contains_focused(window, cx) && dock.read(cx).is_open() {
 3828                Some(origin)
 3829            } else {
 3830                None
 3831            }
 3832        })
 3833        .unwrap_or(Origin::Center);
 3834
 3835        let get_last_active_pane = || {
 3836            let pane = self
 3837                .last_active_center_pane
 3838                .clone()
 3839                .unwrap_or_else(|| {
 3840                    self.panes
 3841                        .first()
 3842                        .expect("There must be an active pane")
 3843                        .downgrade()
 3844                })
 3845                .upgrade()?;
 3846            (pane.read(cx).items_len() != 0).then_some(pane)
 3847        };
 3848
 3849        let try_dock =
 3850            |dock: &Entity<Dock>| dock.read(cx).is_open().then(|| Target::Dock(dock.clone()));
 3851
 3852        let target = match (origin, direction) {
 3853            // We're in the center, so we first try to go to a different pane,
 3854            // otherwise try to go to a dock.
 3855            (Origin::Center, direction) => {
 3856                if let Some(pane) = self.find_pane_in_direction(direction, cx) {
 3857                    Some(Target::Pane(pane))
 3858                } else {
 3859                    match direction {
 3860                        SplitDirection::Up => None,
 3861                        SplitDirection::Down => try_dock(&self.bottom_dock),
 3862                        SplitDirection::Left => try_dock(&self.left_dock),
 3863                        SplitDirection::Right => try_dock(&self.right_dock),
 3864                    }
 3865                }
 3866            }
 3867
 3868            (Origin::LeftDock, SplitDirection::Right) => {
 3869                if let Some(last_active_pane) = get_last_active_pane() {
 3870                    Some(Target::Pane(last_active_pane))
 3871                } else {
 3872                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.right_dock))
 3873                }
 3874            }
 3875
 3876            (Origin::LeftDock, SplitDirection::Down)
 3877            | (Origin::RightDock, SplitDirection::Down) => try_dock(&self.bottom_dock),
 3878
 3879            (Origin::BottomDock, SplitDirection::Up) => get_last_active_pane().map(Target::Pane),
 3880            (Origin::BottomDock, SplitDirection::Left) => try_dock(&self.left_dock),
 3881            (Origin::BottomDock, SplitDirection::Right) => try_dock(&self.right_dock),
 3882
 3883            (Origin::RightDock, SplitDirection::Left) => {
 3884                if let Some(last_active_pane) = get_last_active_pane() {
 3885                    Some(Target::Pane(last_active_pane))
 3886                } else {
 3887                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.left_dock))
 3888                }
 3889            }
 3890
 3891            _ => None,
 3892        };
 3893
 3894        match target {
 3895            Some(ActivateInDirectionTarget::Pane(pane)) => {
 3896                let pane = pane.read(cx);
 3897                if let Some(item) = pane.active_item() {
 3898                    item.item_focus_handle(cx).focus(window);
 3899                } else {
 3900                    log::error!(
 3901                        "Could not find a focus target when in switching focus in {direction} direction for a pane",
 3902                    );
 3903                }
 3904            }
 3905            Some(ActivateInDirectionTarget::Dock(dock)) => {
 3906                // Defer this to avoid a panic when the dock's active panel is already on the stack.
 3907                window.defer(cx, move |window, cx| {
 3908                    let dock = dock.read(cx);
 3909                    if let Some(panel) = dock.active_panel() {
 3910                        panel.panel_focus_handle(cx).focus(window);
 3911                    } else {
 3912                        log::error!("Could not find a focus target when in switching focus in {direction} direction for a {:?} dock", dock.position());
 3913                    }
 3914                })
 3915            }
 3916            None => {}
 3917        }
 3918    }
 3919
 3920    pub fn move_item_to_pane_in_direction(
 3921        &mut self,
 3922        action: &MoveItemToPaneInDirection,
 3923        window: &mut Window,
 3924        cx: &mut Context<Self>,
 3925    ) {
 3926        let destination = match self.find_pane_in_direction(action.direction, cx) {
 3927            Some(destination) => destination,
 3928            None => {
 3929                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3930                    return;
 3931                }
 3932                let new_pane = self.add_pane(window, cx);
 3933                if self
 3934                    .center
 3935                    .split(&self.active_pane, &new_pane, action.direction)
 3936                    .log_err()
 3937                    .is_none()
 3938                {
 3939                    return;
 3940                };
 3941                new_pane
 3942            }
 3943        };
 3944
 3945        if action.clone {
 3946            if self
 3947                .active_pane
 3948                .read(cx)
 3949                .active_item()
 3950                .is_some_and(|item| item.can_split(cx))
 3951            {
 3952                clone_active_item(
 3953                    self.database_id(),
 3954                    &self.active_pane,
 3955                    &destination,
 3956                    action.focus,
 3957                    window,
 3958                    cx,
 3959                );
 3960                return;
 3961            }
 3962        }
 3963        move_active_item(
 3964            &self.active_pane,
 3965            &destination,
 3966            action.focus,
 3967            true,
 3968            window,
 3969            cx,
 3970        );
 3971    }
 3972
 3973    pub fn bounding_box_for_pane(&self, pane: &Entity<Pane>) -> Option<Bounds<Pixels>> {
 3974        self.center.bounding_box_for_pane(pane)
 3975    }
 3976
 3977    pub fn find_pane_in_direction(
 3978        &mut self,
 3979        direction: SplitDirection,
 3980        cx: &App,
 3981    ) -> Option<Entity<Pane>> {
 3982        self.center
 3983            .find_pane_in_direction(&self.active_pane, direction, cx)
 3984            .cloned()
 3985    }
 3986
 3987    pub fn swap_pane_in_direction(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 3988        if let Some(to) = self.find_pane_in_direction(direction, cx) {
 3989            self.center.swap(&self.active_pane, &to);
 3990            cx.notify();
 3991        }
 3992    }
 3993
 3994    pub fn move_pane_to_border(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 3995        if self
 3996            .center
 3997            .move_to_border(&self.active_pane, direction)
 3998            .unwrap()
 3999        {
 4000            cx.notify();
 4001        }
 4002    }
 4003
 4004    pub fn resize_pane(
 4005        &mut self,
 4006        axis: gpui::Axis,
 4007        amount: Pixels,
 4008        window: &mut Window,
 4009        cx: &mut Context<Self>,
 4010    ) {
 4011        let docks = self.all_docks();
 4012        let active_dock = docks
 4013            .into_iter()
 4014            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 4015
 4016        if let Some(dock) = active_dock {
 4017            let Some(panel_size) = dock.read(cx).active_panel_size(window, cx) else {
 4018                return;
 4019            };
 4020            match dock.read(cx).position() {
 4021                DockPosition::Left => self.resize_left_dock(panel_size + amount, window, cx),
 4022                DockPosition::Bottom => self.resize_bottom_dock(panel_size + amount, window, cx),
 4023                DockPosition::Right => self.resize_right_dock(panel_size + amount, window, cx),
 4024            }
 4025        } else {
 4026            self.center
 4027                .resize(&self.active_pane, axis, amount, &self.bounds);
 4028        }
 4029        cx.notify();
 4030    }
 4031
 4032    pub fn reset_pane_sizes(&mut self, cx: &mut Context<Self>) {
 4033        self.center.reset_pane_sizes();
 4034        cx.notify();
 4035    }
 4036
 4037    fn handle_pane_focused(
 4038        &mut self,
 4039        pane: Entity<Pane>,
 4040        window: &mut Window,
 4041        cx: &mut Context<Self>,
 4042    ) {
 4043        // This is explicitly hoisted out of the following check for pane identity as
 4044        // terminal panel panes are not registered as a center panes.
 4045        self.status_bar.update(cx, |status_bar, cx| {
 4046            status_bar.set_active_pane(&pane, window, cx);
 4047        });
 4048        if self.active_pane != pane {
 4049            self.set_active_pane(&pane, window, cx);
 4050        }
 4051
 4052        if self.last_active_center_pane.is_none() {
 4053            self.last_active_center_pane = Some(pane.downgrade());
 4054        }
 4055
 4056        self.dismiss_zoomed_items_to_reveal(None, window, cx);
 4057        if pane.read(cx).is_zoomed() {
 4058            self.zoomed = Some(pane.downgrade().into());
 4059        } else {
 4060            self.zoomed = None;
 4061        }
 4062        self.zoomed_position = None;
 4063        cx.emit(Event::ZoomChanged);
 4064        self.update_active_view_for_followers(window, cx);
 4065        pane.update(cx, |pane, _| {
 4066            pane.track_alternate_file_items();
 4067        });
 4068
 4069        cx.notify();
 4070    }
 4071
 4072    fn set_active_pane(
 4073        &mut self,
 4074        pane: &Entity<Pane>,
 4075        window: &mut Window,
 4076        cx: &mut Context<Self>,
 4077    ) {
 4078        self.active_pane = pane.clone();
 4079        self.active_item_path_changed(window, cx);
 4080        self.last_active_center_pane = Some(pane.downgrade());
 4081    }
 4082
 4083    fn handle_panel_focused(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4084        self.update_active_view_for_followers(window, cx);
 4085    }
 4086
 4087    fn handle_pane_event(
 4088        &mut self,
 4089        pane: &Entity<Pane>,
 4090        event: &pane::Event,
 4091        window: &mut Window,
 4092        cx: &mut Context<Self>,
 4093    ) {
 4094        let mut serialize_workspace = true;
 4095        match event {
 4096            pane::Event::AddItem { item } => {
 4097                item.added_to_pane(self, pane.clone(), window, cx);
 4098                cx.emit(Event::ItemAdded {
 4099                    item: item.boxed_clone(),
 4100                });
 4101            }
 4102            pane::Event::Split {
 4103                direction,
 4104                clone_active_item,
 4105            } => {
 4106                if *clone_active_item {
 4107                    self.split_and_clone(pane.clone(), *direction, window, cx)
 4108                        .detach();
 4109                } else {
 4110                    self.split_and_move(pane.clone(), *direction, window, cx);
 4111                }
 4112            }
 4113            pane::Event::JoinIntoNext => {
 4114                self.join_pane_into_next(pane.clone(), window, cx);
 4115            }
 4116            pane::Event::JoinAll => {
 4117                self.join_all_panes(window, cx);
 4118            }
 4119            pane::Event::Remove { focus_on_pane } => {
 4120                self.remove_pane(pane.clone(), focus_on_pane.clone(), window, cx);
 4121            }
 4122            pane::Event::ActivateItem {
 4123                local,
 4124                focus_changed,
 4125            } => {
 4126                window.invalidate_character_coordinates();
 4127
 4128                pane.update(cx, |pane, _| {
 4129                    pane.track_alternate_file_items();
 4130                });
 4131                if *local {
 4132                    self.unfollow_in_pane(pane, window, cx);
 4133                }
 4134                serialize_workspace = *focus_changed || pane != self.active_pane();
 4135                if pane == self.active_pane() {
 4136                    self.active_item_path_changed(window, cx);
 4137                    self.update_active_view_for_followers(window, cx);
 4138                } else if *local {
 4139                    self.set_active_pane(pane, window, cx);
 4140                }
 4141            }
 4142            pane::Event::UserSavedItem { item, save_intent } => {
 4143                cx.emit(Event::UserSavedItem {
 4144                    pane: pane.downgrade(),
 4145                    item: item.boxed_clone(),
 4146                    save_intent: *save_intent,
 4147                });
 4148                serialize_workspace = false;
 4149            }
 4150            pane::Event::ChangeItemTitle => {
 4151                if *pane == self.active_pane {
 4152                    self.active_item_path_changed(window, cx);
 4153                }
 4154                serialize_workspace = false;
 4155            }
 4156            pane::Event::RemovedItem { item } => {
 4157                cx.emit(Event::ActiveItemChanged);
 4158                self.update_window_edited(window, cx);
 4159                if let hash_map::Entry::Occupied(entry) = self.panes_by_item.entry(item.item_id())
 4160                    && entry.get().entity_id() == pane.entity_id()
 4161                {
 4162                    entry.remove();
 4163                }
 4164                cx.emit(Event::ItemRemoved {
 4165                    item_id: item.item_id(),
 4166                });
 4167            }
 4168            pane::Event::Focus => {
 4169                window.invalidate_character_coordinates();
 4170                self.handle_pane_focused(pane.clone(), window, cx);
 4171            }
 4172            pane::Event::ZoomIn => {
 4173                if *pane == self.active_pane {
 4174                    pane.update(cx, |pane, cx| pane.set_zoomed(true, cx));
 4175                    if pane.read(cx).has_focus(window, cx) {
 4176                        self.zoomed = Some(pane.downgrade().into());
 4177                        self.zoomed_position = None;
 4178                        cx.emit(Event::ZoomChanged);
 4179                    }
 4180                    cx.notify();
 4181                }
 4182            }
 4183            pane::Event::ZoomOut => {
 4184                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 4185                if self.zoomed_position.is_none() {
 4186                    self.zoomed = None;
 4187                    cx.emit(Event::ZoomChanged);
 4188                }
 4189                cx.notify();
 4190            }
 4191            pane::Event::ItemPinned | pane::Event::ItemUnpinned => {}
 4192        }
 4193
 4194        if serialize_workspace {
 4195            self.serialize_workspace(window, cx);
 4196        }
 4197    }
 4198
 4199    pub fn unfollow_in_pane(
 4200        &mut self,
 4201        pane: &Entity<Pane>,
 4202        window: &mut Window,
 4203        cx: &mut Context<Workspace>,
 4204    ) -> Option<CollaboratorId> {
 4205        let leader_id = self.leader_for_pane(pane)?;
 4206        self.unfollow(leader_id, window, cx);
 4207        Some(leader_id)
 4208    }
 4209
 4210    pub fn split_pane(
 4211        &mut self,
 4212        pane_to_split: Entity<Pane>,
 4213        split_direction: SplitDirection,
 4214        window: &mut Window,
 4215        cx: &mut Context<Self>,
 4216    ) -> Entity<Pane> {
 4217        let new_pane = self.add_pane(window, cx);
 4218        self.center
 4219            .split(&pane_to_split, &new_pane, split_direction)
 4220            .unwrap();
 4221        cx.notify();
 4222        new_pane
 4223    }
 4224
 4225    pub fn split_and_move(
 4226        &mut self,
 4227        pane: Entity<Pane>,
 4228        direction: SplitDirection,
 4229        window: &mut Window,
 4230        cx: &mut Context<Self>,
 4231    ) {
 4232        let Some(item) = pane.update(cx, |pane, cx| pane.take_active_item(window, cx)) else {
 4233            return;
 4234        };
 4235        let new_pane = self.add_pane(window, cx);
 4236        new_pane.update(cx, |pane, cx| {
 4237            pane.add_item(item, true, true, None, window, cx)
 4238        });
 4239        self.center.split(&pane, &new_pane, direction).unwrap();
 4240        cx.notify();
 4241    }
 4242
 4243    pub fn split_and_clone(
 4244        &mut self,
 4245        pane: Entity<Pane>,
 4246        direction: SplitDirection,
 4247        window: &mut Window,
 4248        cx: &mut Context<Self>,
 4249    ) -> Task<Option<Entity<Pane>>> {
 4250        let Some(item) = pane.read(cx).active_item() else {
 4251            return Task::ready(None);
 4252        };
 4253        if !item.can_split(cx) {
 4254            return Task::ready(None);
 4255        }
 4256        let task = item.clone_on_split(self.database_id(), window, cx);
 4257        cx.spawn_in(window, async move |this, cx| {
 4258            if let Some(clone) = task.await {
 4259                this.update_in(cx, |this, window, cx| {
 4260                    let new_pane = this.add_pane(window, cx);
 4261                    new_pane.update(cx, |pane, cx| {
 4262                        pane.add_item(clone, true, true, None, window, cx)
 4263                    });
 4264                    this.center.split(&pane, &new_pane, direction).unwrap();
 4265                    cx.notify();
 4266                    new_pane
 4267                })
 4268                .ok()
 4269            } else {
 4270                None
 4271            }
 4272        })
 4273    }
 4274
 4275    pub fn join_all_panes(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4276        let active_item = self.active_pane.read(cx).active_item();
 4277        for pane in &self.panes {
 4278            join_pane_into_active(&self.active_pane, pane, window, cx);
 4279        }
 4280        if let Some(active_item) = active_item {
 4281            self.activate_item(active_item.as_ref(), true, true, window, cx);
 4282        }
 4283        cx.notify();
 4284    }
 4285
 4286    pub fn join_pane_into_next(
 4287        &mut self,
 4288        pane: Entity<Pane>,
 4289        window: &mut Window,
 4290        cx: &mut Context<Self>,
 4291    ) {
 4292        let next_pane = self
 4293            .find_pane_in_direction(SplitDirection::Right, cx)
 4294            .or_else(|| self.find_pane_in_direction(SplitDirection::Down, cx))
 4295            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4296            .or_else(|| self.find_pane_in_direction(SplitDirection::Up, cx));
 4297        let Some(next_pane) = next_pane else {
 4298            return;
 4299        };
 4300        move_all_items(&pane, &next_pane, window, cx);
 4301        cx.notify();
 4302    }
 4303
 4304    fn remove_pane(
 4305        &mut self,
 4306        pane: Entity<Pane>,
 4307        focus_on: Option<Entity<Pane>>,
 4308        window: &mut Window,
 4309        cx: &mut Context<Self>,
 4310    ) {
 4311        if self.center.remove(&pane).unwrap() {
 4312            self.force_remove_pane(&pane, &focus_on, window, cx);
 4313            self.unfollow_in_pane(&pane, window, cx);
 4314            self.last_leaders_by_pane.remove(&pane.downgrade());
 4315            for removed_item in pane.read(cx).items() {
 4316                self.panes_by_item.remove(&removed_item.item_id());
 4317            }
 4318
 4319            cx.notify();
 4320        } else {
 4321            self.active_item_path_changed(window, cx);
 4322        }
 4323        cx.emit(Event::PaneRemoved);
 4324    }
 4325
 4326    pub fn panes_mut(&mut self) -> &mut [Entity<Pane>] {
 4327        &mut self.panes
 4328    }
 4329
 4330    pub fn panes(&self) -> &[Entity<Pane>] {
 4331        &self.panes
 4332    }
 4333
 4334    pub fn active_pane(&self) -> &Entity<Pane> {
 4335        &self.active_pane
 4336    }
 4337
 4338    pub fn focused_pane(&self, window: &Window, cx: &App) -> Entity<Pane> {
 4339        for dock in self.all_docks() {
 4340            if dock.focus_handle(cx).contains_focused(window, cx)
 4341                && let Some(pane) = dock
 4342                    .read(cx)
 4343                    .active_panel()
 4344                    .and_then(|panel| panel.pane(cx))
 4345            {
 4346                return pane;
 4347            }
 4348        }
 4349        self.active_pane().clone()
 4350    }
 4351
 4352    pub fn adjacent_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 4353        self.find_pane_in_direction(SplitDirection::Right, cx)
 4354            .unwrap_or_else(|| {
 4355                self.split_pane(self.active_pane.clone(), SplitDirection::Right, window, cx)
 4356            })
 4357    }
 4358
 4359    pub fn pane_for(&self, handle: &dyn ItemHandle) -> Option<Entity<Pane>> {
 4360        let weak_pane = self.panes_by_item.get(&handle.item_id())?;
 4361        weak_pane.upgrade()
 4362    }
 4363
 4364    fn collaborator_left(&mut self, peer_id: PeerId, window: &mut Window, cx: &mut Context<Self>) {
 4365        self.follower_states.retain(|leader_id, state| {
 4366            if *leader_id == CollaboratorId::PeerId(peer_id) {
 4367                for item in state.items_by_leader_view_id.values() {
 4368                    item.view.set_leader_id(None, window, cx);
 4369                }
 4370                false
 4371            } else {
 4372                true
 4373            }
 4374        });
 4375        cx.notify();
 4376    }
 4377
 4378    pub fn start_following(
 4379        &mut self,
 4380        leader_id: impl Into<CollaboratorId>,
 4381        window: &mut Window,
 4382        cx: &mut Context<Self>,
 4383    ) -> Option<Task<Result<()>>> {
 4384        let leader_id = leader_id.into();
 4385        let pane = self.active_pane().clone();
 4386
 4387        self.last_leaders_by_pane
 4388            .insert(pane.downgrade(), leader_id);
 4389        self.unfollow(leader_id, window, cx);
 4390        self.unfollow_in_pane(&pane, window, cx);
 4391        self.follower_states.insert(
 4392            leader_id,
 4393            FollowerState {
 4394                center_pane: pane.clone(),
 4395                dock_pane: None,
 4396                active_view_id: None,
 4397                items_by_leader_view_id: Default::default(),
 4398            },
 4399        );
 4400        cx.notify();
 4401
 4402        match leader_id {
 4403            CollaboratorId::PeerId(leader_peer_id) => {
 4404                let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4405                let project_id = self.project.read(cx).remote_id();
 4406                let request = self.app_state.client.request(proto::Follow {
 4407                    room_id,
 4408                    project_id,
 4409                    leader_id: Some(leader_peer_id),
 4410                });
 4411
 4412                Some(cx.spawn_in(window, async move |this, cx| {
 4413                    let response = request.await?;
 4414                    this.update(cx, |this, _| {
 4415                        let state = this
 4416                            .follower_states
 4417                            .get_mut(&leader_id)
 4418                            .context("following interrupted")?;
 4419                        state.active_view_id = response
 4420                            .active_view
 4421                            .as_ref()
 4422                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4423                        anyhow::Ok(())
 4424                    })??;
 4425                    if let Some(view) = response.active_view {
 4426                        Self::add_view_from_leader(this.clone(), leader_peer_id, &view, cx).await?;
 4427                    }
 4428                    this.update_in(cx, |this, window, cx| {
 4429                        this.leader_updated(leader_id, window, cx)
 4430                    })?;
 4431                    Ok(())
 4432                }))
 4433            }
 4434            CollaboratorId::Agent => {
 4435                self.leader_updated(leader_id, window, cx)?;
 4436                Some(Task::ready(Ok(())))
 4437            }
 4438        }
 4439    }
 4440
 4441    pub fn follow_next_collaborator(
 4442        &mut self,
 4443        _: &FollowNextCollaborator,
 4444        window: &mut Window,
 4445        cx: &mut Context<Self>,
 4446    ) {
 4447        let collaborators = self.project.read(cx).collaborators();
 4448        let next_leader_id = if let Some(leader_id) = self.leader_for_pane(&self.active_pane) {
 4449            let mut collaborators = collaborators.keys().copied();
 4450            for peer_id in collaborators.by_ref() {
 4451                if CollaboratorId::PeerId(peer_id) == leader_id {
 4452                    break;
 4453                }
 4454            }
 4455            collaborators.next().map(CollaboratorId::PeerId)
 4456        } else if let Some(last_leader_id) =
 4457            self.last_leaders_by_pane.get(&self.active_pane.downgrade())
 4458        {
 4459            match last_leader_id {
 4460                CollaboratorId::PeerId(peer_id) => {
 4461                    if collaborators.contains_key(peer_id) {
 4462                        Some(*last_leader_id)
 4463                    } else {
 4464                        None
 4465                    }
 4466                }
 4467                CollaboratorId::Agent => Some(CollaboratorId::Agent),
 4468            }
 4469        } else {
 4470            None
 4471        };
 4472
 4473        let pane = self.active_pane.clone();
 4474        let Some(leader_id) = next_leader_id.or_else(|| {
 4475            Some(CollaboratorId::PeerId(
 4476                collaborators.keys().copied().next()?,
 4477            ))
 4478        }) else {
 4479            return;
 4480        };
 4481        if self.unfollow_in_pane(&pane, window, cx) == Some(leader_id) {
 4482            return;
 4483        }
 4484        if let Some(task) = self.start_following(leader_id, window, cx) {
 4485            task.detach_and_log_err(cx)
 4486        }
 4487    }
 4488
 4489    pub fn follow(
 4490        &mut self,
 4491        leader_id: impl Into<CollaboratorId>,
 4492        window: &mut Window,
 4493        cx: &mut Context<Self>,
 4494    ) {
 4495        let leader_id = leader_id.into();
 4496
 4497        if let CollaboratorId::PeerId(peer_id) = leader_id {
 4498            let Some(room) = ActiveCall::global(cx).read(cx).room() else {
 4499                return;
 4500            };
 4501            let room = room.read(cx);
 4502            let Some(remote_participant) = room.remote_participant_for_peer_id(peer_id) else {
 4503                return;
 4504            };
 4505
 4506            let project = self.project.read(cx);
 4507
 4508            let other_project_id = match remote_participant.location {
 4509                call::ParticipantLocation::External => None,
 4510                call::ParticipantLocation::UnsharedProject => None,
 4511                call::ParticipantLocation::SharedProject { project_id } => {
 4512                    if Some(project_id) == project.remote_id() {
 4513                        None
 4514                    } else {
 4515                        Some(project_id)
 4516                    }
 4517                }
 4518            };
 4519
 4520            // if they are active in another project, follow there.
 4521            if let Some(project_id) = other_project_id {
 4522                let app_state = self.app_state.clone();
 4523                crate::join_in_room_project(project_id, remote_participant.user.id, app_state, cx)
 4524                    .detach_and_log_err(cx);
 4525            }
 4526        }
 4527
 4528        // if you're already following, find the right pane and focus it.
 4529        if let Some(follower_state) = self.follower_states.get(&leader_id) {
 4530            window.focus(&follower_state.pane().focus_handle(cx));
 4531
 4532            return;
 4533        }
 4534
 4535        // Otherwise, follow.
 4536        if let Some(task) = self.start_following(leader_id, window, cx) {
 4537            task.detach_and_log_err(cx)
 4538        }
 4539    }
 4540
 4541    pub fn unfollow(
 4542        &mut self,
 4543        leader_id: impl Into<CollaboratorId>,
 4544        window: &mut Window,
 4545        cx: &mut Context<Self>,
 4546    ) -> Option<()> {
 4547        cx.notify();
 4548
 4549        let leader_id = leader_id.into();
 4550        let state = self.follower_states.remove(&leader_id)?;
 4551        for (_, item) in state.items_by_leader_view_id {
 4552            item.view.set_leader_id(None, window, cx);
 4553        }
 4554
 4555        if let CollaboratorId::PeerId(leader_peer_id) = leader_id {
 4556            let project_id = self.project.read(cx).remote_id();
 4557            let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4558            self.app_state
 4559                .client
 4560                .send(proto::Unfollow {
 4561                    room_id,
 4562                    project_id,
 4563                    leader_id: Some(leader_peer_id),
 4564                })
 4565                .log_err();
 4566        }
 4567
 4568        Some(())
 4569    }
 4570
 4571    pub fn is_being_followed(&self, id: impl Into<CollaboratorId>) -> bool {
 4572        self.follower_states.contains_key(&id.into())
 4573    }
 4574
 4575    fn active_item_path_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4576        cx.emit(Event::ActiveItemChanged);
 4577        let active_entry = self.active_project_path(cx);
 4578        self.project.update(cx, |project, cx| {
 4579            project.set_active_path(active_entry.clone(), cx)
 4580        });
 4581
 4582        if let Some(project_path) = &active_entry {
 4583            let git_store_entity = self.project.read(cx).git_store().clone();
 4584            git_store_entity.update(cx, |git_store, cx| {
 4585                git_store.set_active_repo_for_path(project_path, cx);
 4586            });
 4587        }
 4588
 4589        self.update_window_title(window, cx);
 4590    }
 4591
 4592    fn update_window_title(&mut self, window: &mut Window, cx: &mut App) {
 4593        let project = self.project().read(cx);
 4594        let mut title = String::new();
 4595
 4596        for (i, worktree) in project.visible_worktrees(cx).enumerate() {
 4597            let name = {
 4598                let settings_location = SettingsLocation {
 4599                    worktree_id: worktree.read(cx).id(),
 4600                    path: RelPath::empty(),
 4601                };
 4602
 4603                let settings = WorktreeSettings::get(Some(settings_location), cx);
 4604                match &settings.project_name {
 4605                    Some(name) => name.as_str(),
 4606                    None => worktree.read(cx).root_name_str(),
 4607                }
 4608            };
 4609            if i > 0 {
 4610                title.push_str(", ");
 4611            }
 4612            title.push_str(name);
 4613        }
 4614
 4615        if title.is_empty() {
 4616            title = "empty project".to_string();
 4617        }
 4618
 4619        if let Some(path) = self.active_item(cx).and_then(|item| item.project_path(cx)) {
 4620            let filename = path.path.file_name().or_else(|| {
 4621                Some(
 4622                    project
 4623                        .worktree_for_id(path.worktree_id, cx)?
 4624                        .read(cx)
 4625                        .root_name_str(),
 4626                )
 4627            });
 4628
 4629            if let Some(filename) = filename {
 4630                title.push_str("");
 4631                title.push_str(filename.as_ref());
 4632            }
 4633        }
 4634
 4635        if project.is_via_collab() {
 4636            title.push_str("");
 4637        } else if project.is_shared() {
 4638            title.push_str("");
 4639        }
 4640
 4641        if let Some(last_title) = self.last_window_title.as_ref()
 4642            && &title == last_title
 4643        {
 4644            return;
 4645        }
 4646        window.set_window_title(&title);
 4647        SystemWindowTabController::update_tab_title(
 4648            cx,
 4649            window.window_handle().window_id(),
 4650            SharedString::from(&title),
 4651        );
 4652        self.last_window_title = Some(title);
 4653    }
 4654
 4655    fn update_window_edited(&mut self, window: &mut Window, cx: &mut App) {
 4656        let is_edited = !self.project.read(cx).is_disconnected(cx) && !self.dirty_items.is_empty();
 4657        if is_edited != self.window_edited {
 4658            self.window_edited = is_edited;
 4659            window.set_window_edited(self.window_edited)
 4660        }
 4661    }
 4662
 4663    fn update_item_dirty_state(
 4664        &mut self,
 4665        item: &dyn ItemHandle,
 4666        window: &mut Window,
 4667        cx: &mut App,
 4668    ) {
 4669        let is_dirty = item.is_dirty(cx);
 4670        let item_id = item.item_id();
 4671        let was_dirty = self.dirty_items.contains_key(&item_id);
 4672        if is_dirty == was_dirty {
 4673            return;
 4674        }
 4675        if was_dirty {
 4676            self.dirty_items.remove(&item_id);
 4677            self.update_window_edited(window, cx);
 4678            return;
 4679        }
 4680        if let Some(window_handle) = window.window_handle().downcast::<Self>() {
 4681            let s = item.on_release(
 4682                cx,
 4683                Box::new(move |cx| {
 4684                    window_handle
 4685                        .update(cx, |this, window, cx| {
 4686                            this.dirty_items.remove(&item_id);
 4687                            this.update_window_edited(window, cx)
 4688                        })
 4689                        .ok();
 4690                }),
 4691            );
 4692            self.dirty_items.insert(item_id, s);
 4693            self.update_window_edited(window, cx);
 4694        }
 4695    }
 4696
 4697    fn render_notifications(&self, _window: &mut Window, _cx: &mut Context<Self>) -> Option<Div> {
 4698        if self.notifications.is_empty() {
 4699            None
 4700        } else {
 4701            Some(
 4702                div()
 4703                    .absolute()
 4704                    .right_3()
 4705                    .bottom_3()
 4706                    .w_112()
 4707                    .h_full()
 4708                    .flex()
 4709                    .flex_col()
 4710                    .justify_end()
 4711                    .gap_2()
 4712                    .children(
 4713                        self.notifications
 4714                            .iter()
 4715                            .map(|(_, notification)| notification.clone().into_any()),
 4716                    ),
 4717            )
 4718        }
 4719    }
 4720
 4721    // RPC handlers
 4722
 4723    fn active_view_for_follower(
 4724        &self,
 4725        follower_project_id: Option<u64>,
 4726        window: &mut Window,
 4727        cx: &mut Context<Self>,
 4728    ) -> Option<proto::View> {
 4729        let (item, panel_id) = self.active_item_for_followers(window, cx);
 4730        let item = item?;
 4731        let leader_id = self
 4732            .pane_for(&*item)
 4733            .and_then(|pane| self.leader_for_pane(&pane));
 4734        let leader_peer_id = match leader_id {
 4735            Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4736            Some(CollaboratorId::Agent) | None => None,
 4737        };
 4738
 4739        let item_handle = item.to_followable_item_handle(cx)?;
 4740        let id = item_handle.remote_id(&self.app_state.client, window, cx)?;
 4741        let variant = item_handle.to_state_proto(window, cx)?;
 4742
 4743        if item_handle.is_project_item(window, cx)
 4744            && (follower_project_id.is_none()
 4745                || follower_project_id != self.project.read(cx).remote_id())
 4746        {
 4747            return None;
 4748        }
 4749
 4750        Some(proto::View {
 4751            id: id.to_proto(),
 4752            leader_id: leader_peer_id,
 4753            variant: Some(variant),
 4754            panel_id: panel_id.map(|id| id as i32),
 4755        })
 4756    }
 4757
 4758    fn handle_follow(
 4759        &mut self,
 4760        follower_project_id: Option<u64>,
 4761        window: &mut Window,
 4762        cx: &mut Context<Self>,
 4763    ) -> proto::FollowResponse {
 4764        let active_view = self.active_view_for_follower(follower_project_id, window, cx);
 4765
 4766        cx.notify();
 4767        proto::FollowResponse {
 4768            // TODO: Remove after version 0.145.x stabilizes.
 4769            active_view_id: active_view.as_ref().and_then(|view| view.id.clone()),
 4770            views: active_view.iter().cloned().collect(),
 4771            active_view,
 4772        }
 4773    }
 4774
 4775    fn handle_update_followers(
 4776        &mut self,
 4777        leader_id: PeerId,
 4778        message: proto::UpdateFollowers,
 4779        _window: &mut Window,
 4780        _cx: &mut Context<Self>,
 4781    ) {
 4782        self.leader_updates_tx
 4783            .unbounded_send((leader_id, message))
 4784            .ok();
 4785    }
 4786
 4787    async fn process_leader_update(
 4788        this: &WeakEntity<Self>,
 4789        leader_id: PeerId,
 4790        update: proto::UpdateFollowers,
 4791        cx: &mut AsyncWindowContext,
 4792    ) -> Result<()> {
 4793        match update.variant.context("invalid update")? {
 4794            proto::update_followers::Variant::CreateView(view) => {
 4795                let view_id = ViewId::from_proto(view.id.clone().context("invalid view id")?)?;
 4796                let should_add_view = this.update(cx, |this, _| {
 4797                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4798                        anyhow::Ok(!state.items_by_leader_view_id.contains_key(&view_id))
 4799                    } else {
 4800                        anyhow::Ok(false)
 4801                    }
 4802                })??;
 4803
 4804                if should_add_view {
 4805                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4806                }
 4807            }
 4808            proto::update_followers::Variant::UpdateActiveView(update_active_view) => {
 4809                let should_add_view = this.update(cx, |this, _| {
 4810                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4811                        state.active_view_id = update_active_view
 4812                            .view
 4813                            .as_ref()
 4814                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4815
 4816                        if state.active_view_id.is_some_and(|view_id| {
 4817                            !state.items_by_leader_view_id.contains_key(&view_id)
 4818                        }) {
 4819                            anyhow::Ok(true)
 4820                        } else {
 4821                            anyhow::Ok(false)
 4822                        }
 4823                    } else {
 4824                        anyhow::Ok(false)
 4825                    }
 4826                })??;
 4827
 4828                if should_add_view && let Some(view) = update_active_view.view {
 4829                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4830                }
 4831            }
 4832            proto::update_followers::Variant::UpdateView(update_view) => {
 4833                let variant = update_view.variant.context("missing update view variant")?;
 4834                let id = update_view.id.context("missing update view id")?;
 4835                let mut tasks = Vec::new();
 4836                this.update_in(cx, |this, window, cx| {
 4837                    let project = this.project.clone();
 4838                    if let Some(state) = this.follower_states.get(&leader_id.into()) {
 4839                        let view_id = ViewId::from_proto(id.clone())?;
 4840                        if let Some(item) = state.items_by_leader_view_id.get(&view_id) {
 4841                            tasks.push(item.view.apply_update_proto(
 4842                                &project,
 4843                                variant.clone(),
 4844                                window,
 4845                                cx,
 4846                            ));
 4847                        }
 4848                    }
 4849                    anyhow::Ok(())
 4850                })??;
 4851                try_join_all(tasks).await.log_err();
 4852            }
 4853        }
 4854        this.update_in(cx, |this, window, cx| {
 4855            this.leader_updated(leader_id, window, cx)
 4856        })?;
 4857        Ok(())
 4858    }
 4859
 4860    async fn add_view_from_leader(
 4861        this: WeakEntity<Self>,
 4862        leader_id: PeerId,
 4863        view: &proto::View,
 4864        cx: &mut AsyncWindowContext,
 4865    ) -> Result<()> {
 4866        let this = this.upgrade().context("workspace dropped")?;
 4867
 4868        let Some(id) = view.id.clone() else {
 4869            anyhow::bail!("no id for view");
 4870        };
 4871        let id = ViewId::from_proto(id)?;
 4872        let panel_id = view.panel_id.and_then(proto::PanelId::from_i32);
 4873
 4874        let pane = this.update(cx, |this, _cx| {
 4875            let state = this
 4876                .follower_states
 4877                .get(&leader_id.into())
 4878                .context("stopped following")?;
 4879            anyhow::Ok(state.pane().clone())
 4880        })??;
 4881        let existing_item = pane.update_in(cx, |pane, window, cx| {
 4882            let client = this.read(cx).client().clone();
 4883            pane.items().find_map(|item| {
 4884                let item = item.to_followable_item_handle(cx)?;
 4885                if item.remote_id(&client, window, cx) == Some(id) {
 4886                    Some(item)
 4887                } else {
 4888                    None
 4889                }
 4890            })
 4891        })?;
 4892        let item = if let Some(existing_item) = existing_item {
 4893            existing_item
 4894        } else {
 4895            let variant = view.variant.clone();
 4896            anyhow::ensure!(variant.is_some(), "missing view variant");
 4897
 4898            let task = cx.update(|window, cx| {
 4899                FollowableViewRegistry::from_state_proto(this.clone(), id, variant, window, cx)
 4900            })?;
 4901
 4902            let Some(task) = task else {
 4903                anyhow::bail!(
 4904                    "failed to construct view from leader (maybe from a different version of zed?)"
 4905                );
 4906            };
 4907
 4908            let mut new_item = task.await?;
 4909            pane.update_in(cx, |pane, window, cx| {
 4910                let mut item_to_remove = None;
 4911                for (ix, item) in pane.items().enumerate() {
 4912                    if let Some(item) = item.to_followable_item_handle(cx) {
 4913                        match new_item.dedup(item.as_ref(), window, cx) {
 4914                            Some(item::Dedup::KeepExisting) => {
 4915                                new_item =
 4916                                    item.boxed_clone().to_followable_item_handle(cx).unwrap();
 4917                                break;
 4918                            }
 4919                            Some(item::Dedup::ReplaceExisting) => {
 4920                                item_to_remove = Some((ix, item.item_id()));
 4921                                break;
 4922                            }
 4923                            None => {}
 4924                        }
 4925                    }
 4926                }
 4927
 4928                if let Some((ix, id)) = item_to_remove {
 4929                    pane.remove_item(id, false, false, window, cx);
 4930                    pane.add_item(new_item.boxed_clone(), false, false, Some(ix), window, cx);
 4931                }
 4932            })?;
 4933
 4934            new_item
 4935        };
 4936
 4937        this.update_in(cx, |this, window, cx| {
 4938            let state = this.follower_states.get_mut(&leader_id.into())?;
 4939            item.set_leader_id(Some(leader_id.into()), window, cx);
 4940            state.items_by_leader_view_id.insert(
 4941                id,
 4942                FollowerView {
 4943                    view: item,
 4944                    location: panel_id,
 4945                },
 4946            );
 4947
 4948            Some(())
 4949        })?;
 4950
 4951        Ok(())
 4952    }
 4953
 4954    fn handle_agent_location_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4955        let Some(follower_state) = self.follower_states.get_mut(&CollaboratorId::Agent) else {
 4956            return;
 4957        };
 4958
 4959        if let Some(agent_location) = self.project.read(cx).agent_location() {
 4960            let buffer_entity_id = agent_location.buffer.entity_id();
 4961            let view_id = ViewId {
 4962                creator: CollaboratorId::Agent,
 4963                id: buffer_entity_id.as_u64(),
 4964            };
 4965            follower_state.active_view_id = Some(view_id);
 4966
 4967            let item = match follower_state.items_by_leader_view_id.entry(view_id) {
 4968                hash_map::Entry::Occupied(entry) => Some(entry.into_mut()),
 4969                hash_map::Entry::Vacant(entry) => {
 4970                    let existing_view =
 4971                        follower_state
 4972                            .center_pane
 4973                            .read(cx)
 4974                            .items()
 4975                            .find_map(|item| {
 4976                                let item = item.to_followable_item_handle(cx)?;
 4977                                if item.buffer_kind(cx) == ItemBufferKind::Singleton
 4978                                    && item.project_item_model_ids(cx).as_slice()
 4979                                        == [buffer_entity_id]
 4980                                {
 4981                                    Some(item)
 4982                                } else {
 4983                                    None
 4984                                }
 4985                            });
 4986                    let view = existing_view.or_else(|| {
 4987                        agent_location.buffer.upgrade().and_then(|buffer| {
 4988                            cx.update_default_global(|registry: &mut ProjectItemRegistry, cx| {
 4989                                registry.build_item(buffer, self.project.clone(), None, window, cx)
 4990                            })?
 4991                            .to_followable_item_handle(cx)
 4992                        })
 4993                    });
 4994
 4995                    view.map(|view| {
 4996                        entry.insert(FollowerView {
 4997                            view,
 4998                            location: None,
 4999                        })
 5000                    })
 5001                }
 5002            };
 5003
 5004            if let Some(item) = item {
 5005                item.view
 5006                    .set_leader_id(Some(CollaboratorId::Agent), window, cx);
 5007                item.view
 5008                    .update_agent_location(agent_location.position, window, cx);
 5009            }
 5010        } else {
 5011            follower_state.active_view_id = None;
 5012        }
 5013
 5014        self.leader_updated(CollaboratorId::Agent, window, cx);
 5015    }
 5016
 5017    pub fn update_active_view_for_followers(&mut self, window: &mut Window, cx: &mut App) {
 5018        let mut is_project_item = true;
 5019        let mut update = proto::UpdateActiveView::default();
 5020        if window.is_window_active() {
 5021            let (active_item, panel_id) = self.active_item_for_followers(window, cx);
 5022
 5023            if let Some(item) = active_item
 5024                && item.item_focus_handle(cx).contains_focused(window, cx)
 5025            {
 5026                let leader_id = self
 5027                    .pane_for(&*item)
 5028                    .and_then(|pane| self.leader_for_pane(&pane));
 5029                let leader_peer_id = match leader_id {
 5030                    Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 5031                    Some(CollaboratorId::Agent) | None => None,
 5032                };
 5033
 5034                if let Some(item) = item.to_followable_item_handle(cx) {
 5035                    let id = item
 5036                        .remote_id(&self.app_state.client, window, cx)
 5037                        .map(|id| id.to_proto());
 5038
 5039                    if let Some(id) = id
 5040                        && let Some(variant) = item.to_state_proto(window, cx)
 5041                    {
 5042                        let view = Some(proto::View {
 5043                            id: id.clone(),
 5044                            leader_id: leader_peer_id,
 5045                            variant: Some(variant),
 5046                            panel_id: panel_id.map(|id| id as i32),
 5047                        });
 5048
 5049                        is_project_item = item.is_project_item(window, cx);
 5050                        update = proto::UpdateActiveView {
 5051                            view,
 5052                            // TODO: Remove after version 0.145.x stabilizes.
 5053                            id,
 5054                            leader_id: leader_peer_id,
 5055                        };
 5056                    };
 5057                }
 5058            }
 5059        }
 5060
 5061        let active_view_id = update.view.as_ref().and_then(|view| view.id.as_ref());
 5062        if active_view_id != self.last_active_view_id.as_ref() {
 5063            self.last_active_view_id = active_view_id.cloned();
 5064            self.update_followers(
 5065                is_project_item,
 5066                proto::update_followers::Variant::UpdateActiveView(update),
 5067                window,
 5068                cx,
 5069            );
 5070        }
 5071    }
 5072
 5073    fn active_item_for_followers(
 5074        &self,
 5075        window: &mut Window,
 5076        cx: &mut App,
 5077    ) -> (Option<Box<dyn ItemHandle>>, Option<proto::PanelId>) {
 5078        let mut active_item = None;
 5079        let mut panel_id = None;
 5080        for dock in self.all_docks() {
 5081            if dock.focus_handle(cx).contains_focused(window, cx)
 5082                && let Some(panel) = dock.read(cx).active_panel()
 5083                && let Some(pane) = panel.pane(cx)
 5084                && let Some(item) = pane.read(cx).active_item()
 5085            {
 5086                active_item = Some(item);
 5087                panel_id = panel.remote_id();
 5088                break;
 5089            }
 5090        }
 5091
 5092        if active_item.is_none() {
 5093            active_item = self.active_pane().read(cx).active_item();
 5094        }
 5095        (active_item, panel_id)
 5096    }
 5097
 5098    fn update_followers(
 5099        &self,
 5100        project_only: bool,
 5101        update: proto::update_followers::Variant,
 5102        _: &mut Window,
 5103        cx: &mut App,
 5104    ) -> Option<()> {
 5105        // If this update only applies to for followers in the current project,
 5106        // then skip it unless this project is shared. If it applies to all
 5107        // followers, regardless of project, then set `project_id` to none,
 5108        // indicating that it goes to all followers.
 5109        let project_id = if project_only {
 5110            Some(self.project.read(cx).remote_id()?)
 5111        } else {
 5112            None
 5113        };
 5114        self.app_state().workspace_store.update(cx, |store, cx| {
 5115            store.update_followers(project_id, update, cx)
 5116        })
 5117    }
 5118
 5119    pub fn leader_for_pane(&self, pane: &Entity<Pane>) -> Option<CollaboratorId> {
 5120        self.follower_states.iter().find_map(|(leader_id, state)| {
 5121            if state.center_pane == *pane || state.dock_pane.as_ref() == Some(pane) {
 5122                Some(*leader_id)
 5123            } else {
 5124                None
 5125            }
 5126        })
 5127    }
 5128
 5129    fn leader_updated(
 5130        &mut self,
 5131        leader_id: impl Into<CollaboratorId>,
 5132        window: &mut Window,
 5133        cx: &mut Context<Self>,
 5134    ) -> Option<Box<dyn ItemHandle>> {
 5135        cx.notify();
 5136
 5137        let leader_id = leader_id.into();
 5138        let (panel_id, item) = match leader_id {
 5139            CollaboratorId::PeerId(peer_id) => self.active_item_for_peer(peer_id, window, cx)?,
 5140            CollaboratorId::Agent => (None, self.active_item_for_agent()?),
 5141        };
 5142
 5143        let state = self.follower_states.get(&leader_id)?;
 5144        let mut transfer_focus = state.center_pane.read(cx).has_focus(window, cx);
 5145        let pane;
 5146        if let Some(panel_id) = panel_id {
 5147            pane = self
 5148                .activate_panel_for_proto_id(panel_id, window, cx)?
 5149                .pane(cx)?;
 5150            let state = self.follower_states.get_mut(&leader_id)?;
 5151            state.dock_pane = Some(pane.clone());
 5152        } else {
 5153            pane = state.center_pane.clone();
 5154            let state = self.follower_states.get_mut(&leader_id)?;
 5155            if let Some(dock_pane) = state.dock_pane.take() {
 5156                transfer_focus |= dock_pane.focus_handle(cx).contains_focused(window, cx);
 5157            }
 5158        }
 5159
 5160        pane.update(cx, |pane, cx| {
 5161            let focus_active_item = pane.has_focus(window, cx) || transfer_focus;
 5162            if let Some(index) = pane.index_for_item(item.as_ref()) {
 5163                pane.activate_item(index, false, false, window, cx);
 5164            } else {
 5165                pane.add_item(item.boxed_clone(), false, false, None, window, cx)
 5166            }
 5167
 5168            if focus_active_item {
 5169                pane.focus_active_item(window, cx)
 5170            }
 5171        });
 5172
 5173        Some(item)
 5174    }
 5175
 5176    fn active_item_for_agent(&self) -> Option<Box<dyn ItemHandle>> {
 5177        let state = self.follower_states.get(&CollaboratorId::Agent)?;
 5178        let active_view_id = state.active_view_id?;
 5179        Some(
 5180            state
 5181                .items_by_leader_view_id
 5182                .get(&active_view_id)?
 5183                .view
 5184                .boxed_clone(),
 5185        )
 5186    }
 5187
 5188    fn active_item_for_peer(
 5189        &self,
 5190        peer_id: PeerId,
 5191        window: &mut Window,
 5192        cx: &mut Context<Self>,
 5193    ) -> Option<(Option<PanelId>, Box<dyn ItemHandle>)> {
 5194        let call = self.active_call()?;
 5195        let room = call.read(cx).room()?.read(cx);
 5196        let participant = room.remote_participant_for_peer_id(peer_id)?;
 5197        let leader_in_this_app;
 5198        let leader_in_this_project;
 5199        match participant.location {
 5200            call::ParticipantLocation::SharedProject { project_id } => {
 5201                leader_in_this_app = true;
 5202                leader_in_this_project = Some(project_id) == self.project.read(cx).remote_id();
 5203            }
 5204            call::ParticipantLocation::UnsharedProject => {
 5205                leader_in_this_app = true;
 5206                leader_in_this_project = false;
 5207            }
 5208            call::ParticipantLocation::External => {
 5209                leader_in_this_app = false;
 5210                leader_in_this_project = false;
 5211            }
 5212        };
 5213        let state = self.follower_states.get(&peer_id.into())?;
 5214        let mut item_to_activate = None;
 5215        if let (Some(active_view_id), true) = (state.active_view_id, leader_in_this_app) {
 5216            if let Some(item) = state.items_by_leader_view_id.get(&active_view_id)
 5217                && (leader_in_this_project || !item.view.is_project_item(window, cx))
 5218            {
 5219                item_to_activate = Some((item.location, item.view.boxed_clone()));
 5220            }
 5221        } else if let Some(shared_screen) =
 5222            self.shared_screen_for_peer(peer_id, &state.center_pane, window, cx)
 5223        {
 5224            item_to_activate = Some((None, Box::new(shared_screen)));
 5225        }
 5226        item_to_activate
 5227    }
 5228
 5229    fn shared_screen_for_peer(
 5230        &self,
 5231        peer_id: PeerId,
 5232        pane: &Entity<Pane>,
 5233        window: &mut Window,
 5234        cx: &mut App,
 5235    ) -> Option<Entity<SharedScreen>> {
 5236        let call = self.active_call()?;
 5237        let room = call.read(cx).room()?.clone();
 5238        let participant = room.read(cx).remote_participant_for_peer_id(peer_id)?;
 5239        let track = participant.video_tracks.values().next()?.clone();
 5240        let user = participant.user.clone();
 5241
 5242        for item in pane.read(cx).items_of_type::<SharedScreen>() {
 5243            if item.read(cx).peer_id == peer_id {
 5244                return Some(item);
 5245            }
 5246        }
 5247
 5248        Some(cx.new(|cx| SharedScreen::new(track, peer_id, user.clone(), room.clone(), window, cx)))
 5249    }
 5250
 5251    pub fn on_window_activation_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5252        if window.is_window_active() {
 5253            self.update_active_view_for_followers(window, cx);
 5254
 5255            if let Some(database_id) = self.database_id {
 5256                cx.background_spawn(persistence::DB.update_timestamp(database_id))
 5257                    .detach();
 5258            }
 5259        } else {
 5260            for pane in &self.panes {
 5261                pane.update(cx, |pane, cx| {
 5262                    if let Some(item) = pane.active_item() {
 5263                        item.workspace_deactivated(window, cx);
 5264                    }
 5265                    for item in pane.items() {
 5266                        if matches!(
 5267                            item.workspace_settings(cx).autosave,
 5268                            AutosaveSetting::OnWindowChange | AutosaveSetting::OnFocusChange
 5269                        ) {
 5270                            Pane::autosave_item(item.as_ref(), self.project.clone(), window, cx)
 5271                                .detach_and_log_err(cx);
 5272                        }
 5273                    }
 5274                });
 5275            }
 5276        }
 5277    }
 5278
 5279    pub fn active_call(&self) -> Option<&Entity<ActiveCall>> {
 5280        self.active_call.as_ref().map(|(call, _)| call)
 5281    }
 5282
 5283    fn on_active_call_event(
 5284        &mut self,
 5285        _: &Entity<ActiveCall>,
 5286        event: &call::room::Event,
 5287        window: &mut Window,
 5288        cx: &mut Context<Self>,
 5289    ) {
 5290        match event {
 5291            call::room::Event::ParticipantLocationChanged { participant_id }
 5292            | call::room::Event::RemoteVideoTracksChanged { participant_id } => {
 5293                self.leader_updated(participant_id, window, cx);
 5294            }
 5295            _ => {}
 5296        }
 5297    }
 5298
 5299    pub fn database_id(&self) -> Option<WorkspaceId> {
 5300        self.database_id
 5301    }
 5302
 5303    pub fn session_id(&self) -> Option<String> {
 5304        self.session_id.clone()
 5305    }
 5306
 5307    pub fn root_paths(&self, cx: &App) -> Vec<Arc<Path>> {
 5308        let project = self.project().read(cx);
 5309        project
 5310            .visible_worktrees(cx)
 5311            .map(|worktree| worktree.read(cx).abs_path())
 5312            .collect::<Vec<_>>()
 5313    }
 5314
 5315    fn remove_panes(&mut self, member: Member, window: &mut Window, cx: &mut Context<Workspace>) {
 5316        match member {
 5317            Member::Axis(PaneAxis { members, .. }) => {
 5318                for child in members.iter() {
 5319                    self.remove_panes(child.clone(), window, cx)
 5320                }
 5321            }
 5322            Member::Pane(pane) => {
 5323                self.force_remove_pane(&pane, &None, window, cx);
 5324            }
 5325        }
 5326    }
 5327
 5328    fn remove_from_session(&mut self, window: &mut Window, cx: &mut App) -> Task<()> {
 5329        self.session_id.take();
 5330        self.serialize_workspace_internal(window, cx)
 5331    }
 5332
 5333    fn force_remove_pane(
 5334        &mut self,
 5335        pane: &Entity<Pane>,
 5336        focus_on: &Option<Entity<Pane>>,
 5337        window: &mut Window,
 5338        cx: &mut Context<Workspace>,
 5339    ) {
 5340        self.panes.retain(|p| p != pane);
 5341        if let Some(focus_on) = focus_on {
 5342            focus_on.update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5343        } else if self.active_pane() == pane {
 5344            self.panes
 5345                .last()
 5346                .unwrap()
 5347                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5348        }
 5349        if self.last_active_center_pane == Some(pane.downgrade()) {
 5350            self.last_active_center_pane = None;
 5351        }
 5352        cx.notify();
 5353    }
 5354
 5355    fn serialize_workspace(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5356        if self._schedule_serialize_workspace.is_none() {
 5357            self._schedule_serialize_workspace =
 5358                Some(cx.spawn_in(window, async move |this, cx| {
 5359                    cx.background_executor()
 5360                        .timer(SERIALIZATION_THROTTLE_TIME)
 5361                        .await;
 5362                    this.update_in(cx, |this, window, cx| {
 5363                        this.serialize_workspace_internal(window, cx).detach();
 5364                        this._schedule_serialize_workspace.take();
 5365                    })
 5366                    .log_err();
 5367                }));
 5368        }
 5369    }
 5370
 5371    fn serialize_workspace_internal(&self, window: &mut Window, cx: &mut App) -> Task<()> {
 5372        let Some(database_id) = self.database_id() else {
 5373            return Task::ready(());
 5374        };
 5375
 5376        fn serialize_pane_handle(
 5377            pane_handle: &Entity<Pane>,
 5378            window: &mut Window,
 5379            cx: &mut App,
 5380        ) -> SerializedPane {
 5381            let (items, active, pinned_count) = {
 5382                let pane = pane_handle.read(cx);
 5383                let active_item_id = pane.active_item().map(|item| item.item_id());
 5384                (
 5385                    pane.items()
 5386                        .filter_map(|handle| {
 5387                            let handle = handle.to_serializable_item_handle(cx)?;
 5388
 5389                            Some(SerializedItem {
 5390                                kind: Arc::from(handle.serialized_item_kind()),
 5391                                item_id: handle.item_id().as_u64(),
 5392                                active: Some(handle.item_id()) == active_item_id,
 5393                                preview: pane.is_active_preview_item(handle.item_id()),
 5394                            })
 5395                        })
 5396                        .collect::<Vec<_>>(),
 5397                    pane.has_focus(window, cx),
 5398                    pane.pinned_count(),
 5399                )
 5400            };
 5401
 5402            SerializedPane::new(items, active, pinned_count)
 5403        }
 5404
 5405        fn build_serialized_pane_group(
 5406            pane_group: &Member,
 5407            window: &mut Window,
 5408            cx: &mut App,
 5409        ) -> SerializedPaneGroup {
 5410            match pane_group {
 5411                Member::Axis(PaneAxis {
 5412                    axis,
 5413                    members,
 5414                    flexes,
 5415                    bounding_boxes: _,
 5416                }) => SerializedPaneGroup::Group {
 5417                    axis: SerializedAxis(*axis),
 5418                    children: members
 5419                        .iter()
 5420                        .map(|member| build_serialized_pane_group(member, window, cx))
 5421                        .collect::<Vec<_>>(),
 5422                    flexes: Some(flexes.lock().clone()),
 5423                },
 5424                Member::Pane(pane_handle) => {
 5425                    SerializedPaneGroup::Pane(serialize_pane_handle(pane_handle, window, cx))
 5426                }
 5427            }
 5428        }
 5429
 5430        fn build_serialized_docks(
 5431            this: &Workspace,
 5432            window: &mut Window,
 5433            cx: &mut App,
 5434        ) -> DockStructure {
 5435            let left_dock = this.left_dock.read(cx);
 5436            let left_visible = left_dock.is_open();
 5437            let left_active_panel = left_dock
 5438                .active_panel()
 5439                .map(|panel| panel.persistent_name().to_string());
 5440            let left_dock_zoom = left_dock
 5441                .active_panel()
 5442                .map(|panel| panel.is_zoomed(window, cx))
 5443                .unwrap_or(false);
 5444
 5445            let right_dock = this.right_dock.read(cx);
 5446            let right_visible = right_dock.is_open();
 5447            let right_active_panel = right_dock
 5448                .active_panel()
 5449                .map(|panel| panel.persistent_name().to_string());
 5450            let right_dock_zoom = right_dock
 5451                .active_panel()
 5452                .map(|panel| panel.is_zoomed(window, cx))
 5453                .unwrap_or(false);
 5454
 5455            let bottom_dock = this.bottom_dock.read(cx);
 5456            let bottom_visible = bottom_dock.is_open();
 5457            let bottom_active_panel = bottom_dock
 5458                .active_panel()
 5459                .map(|panel| panel.persistent_name().to_string());
 5460            let bottom_dock_zoom = bottom_dock
 5461                .active_panel()
 5462                .map(|panel| panel.is_zoomed(window, cx))
 5463                .unwrap_or(false);
 5464
 5465            DockStructure {
 5466                left: DockData {
 5467                    visible: left_visible,
 5468                    active_panel: left_active_panel,
 5469                    zoom: left_dock_zoom,
 5470                },
 5471                right: DockData {
 5472                    visible: right_visible,
 5473                    active_panel: right_active_panel,
 5474                    zoom: right_dock_zoom,
 5475                },
 5476                bottom: DockData {
 5477                    visible: bottom_visible,
 5478                    active_panel: bottom_active_panel,
 5479                    zoom: bottom_dock_zoom,
 5480                },
 5481            }
 5482        }
 5483
 5484        match self.serialize_workspace_location(cx) {
 5485            WorkspaceLocation::Location(location, paths) => {
 5486                let breakpoints = self.project.update(cx, |project, cx| {
 5487                    project
 5488                        .breakpoint_store()
 5489                        .read(cx)
 5490                        .all_source_breakpoints(cx)
 5491                });
 5492                let user_toolchains = self
 5493                    .project
 5494                    .read(cx)
 5495                    .user_toolchains(cx)
 5496                    .unwrap_or_default();
 5497
 5498                let center_group = build_serialized_pane_group(&self.center.root, window, cx);
 5499                let docks = build_serialized_docks(self, window, cx);
 5500                let window_bounds = Some(SerializedWindowBounds(window.window_bounds()));
 5501
 5502                let serialized_workspace = SerializedWorkspace {
 5503                    id: database_id,
 5504                    location,
 5505                    paths,
 5506                    center_group,
 5507                    window_bounds,
 5508                    display: Default::default(),
 5509                    docks,
 5510                    centered_layout: self.centered_layout,
 5511                    session_id: self.session_id.clone(),
 5512                    breakpoints,
 5513                    window_id: Some(window.window_handle().window_id().as_u64()),
 5514                    user_toolchains,
 5515                };
 5516
 5517                window.spawn(cx, async move |_| {
 5518                    persistence::DB.save_workspace(serialized_workspace).await;
 5519                })
 5520            }
 5521            WorkspaceLocation::DetachFromSession => window.spawn(cx, async move |_| {
 5522                persistence::DB
 5523                    .set_session_id(database_id, None)
 5524                    .await
 5525                    .log_err();
 5526            }),
 5527            WorkspaceLocation::None => Task::ready(()),
 5528        }
 5529    }
 5530
 5531    fn serialize_workspace_location(&self, cx: &App) -> WorkspaceLocation {
 5532        let paths = PathList::new(&self.root_paths(cx));
 5533        if let Some(connection) = self.project.read(cx).remote_connection_options(cx) {
 5534            WorkspaceLocation::Location(SerializedWorkspaceLocation::Remote(connection), paths)
 5535        } else if self.project.read(cx).is_local() {
 5536            if !paths.is_empty() {
 5537                WorkspaceLocation::Location(SerializedWorkspaceLocation::Local, paths)
 5538            } else {
 5539                WorkspaceLocation::DetachFromSession
 5540            }
 5541        } else {
 5542            WorkspaceLocation::None
 5543        }
 5544    }
 5545
 5546    fn update_history(&self, cx: &mut App) {
 5547        let Some(id) = self.database_id() else {
 5548            return;
 5549        };
 5550        if !self.project.read(cx).is_local() {
 5551            return;
 5552        }
 5553        if let Some(manager) = HistoryManager::global(cx) {
 5554            let paths = PathList::new(&self.root_paths(cx));
 5555            manager.update(cx, |this, cx| {
 5556                this.update_history(id, HistoryManagerEntry::new(id, &paths), cx);
 5557            });
 5558        }
 5559    }
 5560
 5561    async fn serialize_items(
 5562        this: &WeakEntity<Self>,
 5563        items_rx: UnboundedReceiver<Box<dyn SerializableItemHandle>>,
 5564        cx: &mut AsyncWindowContext,
 5565    ) -> Result<()> {
 5566        const CHUNK_SIZE: usize = 200;
 5567
 5568        let mut serializable_items = items_rx.ready_chunks(CHUNK_SIZE);
 5569
 5570        while let Some(items_received) = serializable_items.next().await {
 5571            let unique_items =
 5572                items_received
 5573                    .into_iter()
 5574                    .fold(HashMap::default(), |mut acc, item| {
 5575                        acc.entry(item.item_id()).or_insert(item);
 5576                        acc
 5577                    });
 5578
 5579            // We use into_iter() here so that the references to the items are moved into
 5580            // the tasks and not kept alive while we're sleeping.
 5581            for (_, item) in unique_items.into_iter() {
 5582                if let Ok(Some(task)) = this.update_in(cx, |workspace, window, cx| {
 5583                    item.serialize(workspace, false, window, cx)
 5584                }) {
 5585                    cx.background_spawn(async move { task.await.log_err() })
 5586                        .detach();
 5587                }
 5588            }
 5589
 5590            cx.background_executor()
 5591                .timer(SERIALIZATION_THROTTLE_TIME)
 5592                .await;
 5593        }
 5594
 5595        Ok(())
 5596    }
 5597
 5598    pub(crate) fn enqueue_item_serialization(
 5599        &mut self,
 5600        item: Box<dyn SerializableItemHandle>,
 5601    ) -> Result<()> {
 5602        self.serializable_items_tx
 5603            .unbounded_send(item)
 5604            .map_err(|err| anyhow!("failed to send serializable item over channel: {err}"))
 5605    }
 5606
 5607    pub(crate) fn load_workspace(
 5608        serialized_workspace: SerializedWorkspace,
 5609        paths_to_open: Vec<Option<ProjectPath>>,
 5610        window: &mut Window,
 5611        cx: &mut Context<Workspace>,
 5612    ) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 5613        cx.spawn_in(window, async move |workspace, cx| {
 5614            let project = workspace.read_with(cx, |workspace, _| workspace.project().clone())?;
 5615
 5616            let mut center_group = None;
 5617            let mut center_items = None;
 5618
 5619            // Traverse the splits tree and add to things
 5620            if let Some((group, active_pane, items)) = serialized_workspace
 5621                .center_group
 5622                .deserialize(&project, serialized_workspace.id, workspace.clone(), cx)
 5623                .await
 5624            {
 5625                center_items = Some(items);
 5626                center_group = Some((group, active_pane))
 5627            }
 5628
 5629            let mut items_by_project_path = HashMap::default();
 5630            let mut item_ids_by_kind = HashMap::default();
 5631            let mut all_deserialized_items = Vec::default();
 5632            cx.update(|_, cx| {
 5633                for item in center_items.unwrap_or_default().into_iter().flatten() {
 5634                    if let Some(serializable_item_handle) = item.to_serializable_item_handle(cx) {
 5635                        item_ids_by_kind
 5636                            .entry(serializable_item_handle.serialized_item_kind())
 5637                            .or_insert(Vec::new())
 5638                            .push(item.item_id().as_u64() as ItemId);
 5639                    }
 5640
 5641                    if let Some(project_path) = item.project_path(cx) {
 5642                        items_by_project_path.insert(project_path, item.clone());
 5643                    }
 5644                    all_deserialized_items.push(item);
 5645                }
 5646            })?;
 5647
 5648            let opened_items = paths_to_open
 5649                .into_iter()
 5650                .map(|path_to_open| {
 5651                    path_to_open
 5652                        .and_then(|path_to_open| items_by_project_path.remove(&path_to_open))
 5653                })
 5654                .collect::<Vec<_>>();
 5655
 5656            // Remove old panes from workspace panes list
 5657            workspace.update_in(cx, |workspace, window, cx| {
 5658                if let Some((center_group, active_pane)) = center_group {
 5659                    workspace.remove_panes(workspace.center.root.clone(), window, cx);
 5660
 5661                    // Swap workspace center group
 5662                    workspace.center = PaneGroup::with_root(center_group);
 5663                    if let Some(active_pane) = active_pane {
 5664                        workspace.set_active_pane(&active_pane, window, cx);
 5665                        cx.focus_self(window);
 5666                    } else {
 5667                        workspace.set_active_pane(&workspace.center.first_pane(), window, cx);
 5668                    }
 5669                }
 5670
 5671                let docks = serialized_workspace.docks;
 5672
 5673                for (dock, serialized_dock) in [
 5674                    (&mut workspace.right_dock, docks.right),
 5675                    (&mut workspace.left_dock, docks.left),
 5676                    (&mut workspace.bottom_dock, docks.bottom),
 5677                ]
 5678                .iter_mut()
 5679                {
 5680                    dock.update(cx, |dock, cx| {
 5681                        dock.serialized_dock = Some(serialized_dock.clone());
 5682                        dock.restore_state(window, cx);
 5683                    });
 5684                }
 5685
 5686                cx.notify();
 5687            })?;
 5688
 5689            let _ = project
 5690                .update(cx, |project, cx| {
 5691                    project
 5692                        .breakpoint_store()
 5693                        .update(cx, |breakpoint_store, cx| {
 5694                            breakpoint_store
 5695                                .with_serialized_breakpoints(serialized_workspace.breakpoints, cx)
 5696                        })
 5697                })?
 5698                .await;
 5699
 5700            // Clean up all the items that have _not_ been loaded. Our ItemIds aren't stable. That means
 5701            // after loading the items, we might have different items and in order to avoid
 5702            // the database filling up, we delete items that haven't been loaded now.
 5703            //
 5704            // The items that have been loaded, have been saved after they've been added to the workspace.
 5705            let clean_up_tasks = workspace.update_in(cx, |_, window, cx| {
 5706                item_ids_by_kind
 5707                    .into_iter()
 5708                    .map(|(item_kind, loaded_items)| {
 5709                        SerializableItemRegistry::cleanup(
 5710                            item_kind,
 5711                            serialized_workspace.id,
 5712                            loaded_items,
 5713                            window,
 5714                            cx,
 5715                        )
 5716                        .log_err()
 5717                    })
 5718                    .collect::<Vec<_>>()
 5719            })?;
 5720
 5721            futures::future::join_all(clean_up_tasks).await;
 5722
 5723            workspace
 5724                .update_in(cx, |workspace, window, cx| {
 5725                    // Serialize ourself to make sure our timestamps and any pane / item changes are replicated
 5726                    workspace.serialize_workspace_internal(window, cx).detach();
 5727
 5728                    // Ensure that we mark the window as edited if we did load dirty items
 5729                    workspace.update_window_edited(window, cx);
 5730                })
 5731                .ok();
 5732
 5733            Ok(opened_items)
 5734        })
 5735    }
 5736
 5737    fn actions(&self, div: Div, window: &mut Window, cx: &mut Context<Self>) -> Div {
 5738        self.add_workspace_actions_listeners(div, window, cx)
 5739            .on_action(cx.listener(
 5740                |_workspace, action_sequence: &settings::ActionSequence, window, cx| {
 5741                    for action in &action_sequence.0 {
 5742                        window.dispatch_action(action.boxed_clone(), cx);
 5743                    }
 5744                },
 5745            ))
 5746            .on_action(cx.listener(Self::close_inactive_items_and_panes))
 5747            .on_action(cx.listener(Self::close_all_items_and_panes))
 5748            .on_action(cx.listener(Self::save_all))
 5749            .on_action(cx.listener(Self::send_keystrokes))
 5750            .on_action(cx.listener(Self::add_folder_to_project))
 5751            .on_action(cx.listener(Self::follow_next_collaborator))
 5752            .on_action(cx.listener(Self::close_window))
 5753            .on_action(cx.listener(Self::activate_pane_at_index))
 5754            .on_action(cx.listener(Self::move_item_to_pane_at_index))
 5755            .on_action(cx.listener(Self::move_focused_panel_to_next_position))
 5756            .on_action(cx.listener(Self::toggle_edit_predictions_all_files))
 5757            .on_action(cx.listener(|workspace, _: &Unfollow, window, cx| {
 5758                let pane = workspace.active_pane().clone();
 5759                workspace.unfollow_in_pane(&pane, window, cx);
 5760            }))
 5761            .on_action(cx.listener(|workspace, action: &Save, window, cx| {
 5762                workspace
 5763                    .save_active_item(action.save_intent.unwrap_or(SaveIntent::Save), window, cx)
 5764                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5765            }))
 5766            .on_action(cx.listener(|workspace, _: &SaveWithoutFormat, window, cx| {
 5767                workspace
 5768                    .save_active_item(SaveIntent::SaveWithoutFormat, window, cx)
 5769                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5770            }))
 5771            .on_action(cx.listener(|workspace, _: &SaveAs, window, cx| {
 5772                workspace
 5773                    .save_active_item(SaveIntent::SaveAs, window, cx)
 5774                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5775            }))
 5776            .on_action(
 5777                cx.listener(|workspace, _: &ActivatePreviousPane, window, cx| {
 5778                    workspace.activate_previous_pane(window, cx)
 5779                }),
 5780            )
 5781            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5782                workspace.activate_next_pane(window, cx)
 5783            }))
 5784            .on_action(
 5785                cx.listener(|workspace, _: &ActivateNextWindow, _window, cx| {
 5786                    workspace.activate_next_window(cx)
 5787                }),
 5788            )
 5789            .on_action(
 5790                cx.listener(|workspace, _: &ActivatePreviousWindow, _window, cx| {
 5791                    workspace.activate_previous_window(cx)
 5792                }),
 5793            )
 5794            .on_action(cx.listener(|workspace, _: &ActivatePaneLeft, window, cx| {
 5795                workspace.activate_pane_in_direction(SplitDirection::Left, window, cx)
 5796            }))
 5797            .on_action(cx.listener(|workspace, _: &ActivatePaneRight, window, cx| {
 5798                workspace.activate_pane_in_direction(SplitDirection::Right, window, cx)
 5799            }))
 5800            .on_action(cx.listener(|workspace, _: &ActivatePaneUp, window, cx| {
 5801                workspace.activate_pane_in_direction(SplitDirection::Up, window, cx)
 5802            }))
 5803            .on_action(cx.listener(|workspace, _: &ActivatePaneDown, window, cx| {
 5804                workspace.activate_pane_in_direction(SplitDirection::Down, window, cx)
 5805            }))
 5806            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5807                workspace.activate_next_pane(window, cx)
 5808            }))
 5809            .on_action(cx.listener(
 5810                |workspace, action: &MoveItemToPaneInDirection, window, cx| {
 5811                    workspace.move_item_to_pane_in_direction(action, window, cx)
 5812                },
 5813            ))
 5814            .on_action(cx.listener(|workspace, _: &SwapPaneLeft, _, cx| {
 5815                workspace.swap_pane_in_direction(SplitDirection::Left, cx)
 5816            }))
 5817            .on_action(cx.listener(|workspace, _: &SwapPaneRight, _, cx| {
 5818                workspace.swap_pane_in_direction(SplitDirection::Right, cx)
 5819            }))
 5820            .on_action(cx.listener(|workspace, _: &SwapPaneUp, _, cx| {
 5821                workspace.swap_pane_in_direction(SplitDirection::Up, cx)
 5822            }))
 5823            .on_action(cx.listener(|workspace, _: &SwapPaneDown, _, cx| {
 5824                workspace.swap_pane_in_direction(SplitDirection::Down, cx)
 5825            }))
 5826            .on_action(cx.listener(|workspace, _: &MovePaneLeft, _, cx| {
 5827                workspace.move_pane_to_border(SplitDirection::Left, cx)
 5828            }))
 5829            .on_action(cx.listener(|workspace, _: &MovePaneRight, _, cx| {
 5830                workspace.move_pane_to_border(SplitDirection::Right, cx)
 5831            }))
 5832            .on_action(cx.listener(|workspace, _: &MovePaneUp, _, cx| {
 5833                workspace.move_pane_to_border(SplitDirection::Up, cx)
 5834            }))
 5835            .on_action(cx.listener(|workspace, _: &MovePaneDown, _, cx| {
 5836                workspace.move_pane_to_border(SplitDirection::Down, cx)
 5837            }))
 5838            .on_action(cx.listener(|this, _: &ToggleLeftDock, window, cx| {
 5839                this.toggle_dock(DockPosition::Left, window, cx);
 5840            }))
 5841            .on_action(cx.listener(
 5842                |workspace: &mut Workspace, _: &ToggleRightDock, window, cx| {
 5843                    workspace.toggle_dock(DockPosition::Right, window, cx);
 5844                },
 5845            ))
 5846            .on_action(cx.listener(
 5847                |workspace: &mut Workspace, _: &ToggleBottomDock, window, cx| {
 5848                    workspace.toggle_dock(DockPosition::Bottom, window, cx);
 5849                },
 5850            ))
 5851            .on_action(cx.listener(
 5852                |workspace: &mut Workspace, _: &CloseActiveDock, window, cx| {
 5853                    if !workspace.close_active_dock(window, cx) {
 5854                        cx.propagate();
 5855                    }
 5856                },
 5857            ))
 5858            .on_action(
 5859                cx.listener(|workspace: &mut Workspace, _: &CloseAllDocks, window, cx| {
 5860                    workspace.close_all_docks(window, cx);
 5861                }),
 5862            )
 5863            .on_action(cx.listener(Self::toggle_all_docks))
 5864            .on_action(cx.listener(
 5865                |workspace: &mut Workspace, _: &ClearAllNotifications, _, cx| {
 5866                    workspace.clear_all_notifications(cx);
 5867                },
 5868            ))
 5869            .on_action(cx.listener(
 5870                |workspace: &mut Workspace, _: &ClearNavigationHistory, window, cx| {
 5871                    workspace.clear_navigation_history(window, cx);
 5872                },
 5873            ))
 5874            .on_action(cx.listener(
 5875                |workspace: &mut Workspace, _: &SuppressNotification, _, cx| {
 5876                    if let Some((notification_id, _)) = workspace.notifications.pop() {
 5877                        workspace.suppress_notification(&notification_id, cx);
 5878                    }
 5879                },
 5880            ))
 5881            .on_action(cx.listener(
 5882                |workspace: &mut Workspace, _: &ReopenClosedItem, window, cx| {
 5883                    workspace.reopen_closed_item(window, cx).detach();
 5884                },
 5885            ))
 5886            .on_action(cx.listener(
 5887                |workspace: &mut Workspace, _: &ResetActiveDockSize, window, cx| {
 5888                    for dock in workspace.all_docks() {
 5889                        if dock.focus_handle(cx).contains_focused(window, cx) {
 5890                            let Some(panel) = dock.read(cx).active_panel() else {
 5891                                return;
 5892                            };
 5893
 5894                            // Set to `None`, then the size will fall back to the default.
 5895                            panel.clone().set_size(None, window, cx);
 5896
 5897                            return;
 5898                        }
 5899                    }
 5900                },
 5901            ))
 5902            .on_action(cx.listener(
 5903                |workspace: &mut Workspace, _: &ResetOpenDocksSize, window, cx| {
 5904                    for dock in workspace.all_docks() {
 5905                        if let Some(panel) = dock.read(cx).visible_panel() {
 5906                            // Set to `None`, then the size will fall back to the default.
 5907                            panel.clone().set_size(None, window, cx);
 5908                        }
 5909                    }
 5910                },
 5911            ))
 5912            .on_action(cx.listener(
 5913                |workspace: &mut Workspace, act: &IncreaseActiveDockSize, window, cx| {
 5914                    adjust_active_dock_size_by_px(
 5915                        px_with_ui_font_fallback(act.px, cx),
 5916                        workspace,
 5917                        window,
 5918                        cx,
 5919                    );
 5920                },
 5921            ))
 5922            .on_action(cx.listener(
 5923                |workspace: &mut Workspace, act: &DecreaseActiveDockSize, window, cx| {
 5924                    adjust_active_dock_size_by_px(
 5925                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5926                        workspace,
 5927                        window,
 5928                        cx,
 5929                    );
 5930                },
 5931            ))
 5932            .on_action(cx.listener(
 5933                |workspace: &mut Workspace, act: &IncreaseOpenDocksSize, window, cx| {
 5934                    adjust_open_docks_size_by_px(
 5935                        px_with_ui_font_fallback(act.px, cx),
 5936                        workspace,
 5937                        window,
 5938                        cx,
 5939                    );
 5940                },
 5941            ))
 5942            .on_action(cx.listener(
 5943                |workspace: &mut Workspace, act: &DecreaseOpenDocksSize, window, cx| {
 5944                    adjust_open_docks_size_by_px(
 5945                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5946                        workspace,
 5947                        window,
 5948                        cx,
 5949                    );
 5950                },
 5951            ))
 5952            .on_action(cx.listener(Workspace::toggle_centered_layout))
 5953            .on_action(cx.listener(Workspace::cancel))
 5954    }
 5955
 5956    #[cfg(any(test, feature = "test-support"))]
 5957    pub fn test_new(project: Entity<Project>, window: &mut Window, cx: &mut Context<Self>) -> Self {
 5958        use node_runtime::NodeRuntime;
 5959        use session::Session;
 5960
 5961        let client = project.read(cx).client();
 5962        let user_store = project.read(cx).user_store();
 5963        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 5964        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 5965        window.activate_window();
 5966        let app_state = Arc::new(AppState {
 5967            languages: project.read(cx).languages().clone(),
 5968            workspace_store,
 5969            client,
 5970            user_store,
 5971            fs: project.read(cx).fs().clone(),
 5972            build_window_options: |_, _| Default::default(),
 5973            node_runtime: NodeRuntime::unavailable(),
 5974            session,
 5975        });
 5976        let workspace = Self::new(Default::default(), project, app_state, window, cx);
 5977        workspace
 5978            .active_pane
 5979            .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5980        workspace
 5981    }
 5982
 5983    pub fn register_action<A: Action>(
 5984        &mut self,
 5985        callback: impl Fn(&mut Self, &A, &mut Window, &mut Context<Self>) + 'static,
 5986    ) -> &mut Self {
 5987        let callback = Arc::new(callback);
 5988
 5989        self.workspace_actions.push(Box::new(move |div, _, _, cx| {
 5990            let callback = callback.clone();
 5991            div.on_action(cx.listener(move |workspace, event, window, cx| {
 5992                (callback)(workspace, event, window, cx)
 5993            }))
 5994        }));
 5995        self
 5996    }
 5997    pub fn register_action_renderer(
 5998        &mut self,
 5999        callback: impl Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div + 'static,
 6000    ) -> &mut Self {
 6001        self.workspace_actions.push(Box::new(callback));
 6002        self
 6003    }
 6004
 6005    fn add_workspace_actions_listeners(
 6006        &self,
 6007        mut div: Div,
 6008        window: &mut Window,
 6009        cx: &mut Context<Self>,
 6010    ) -> Div {
 6011        for action in self.workspace_actions.iter() {
 6012            div = (action)(div, self, window, cx)
 6013        }
 6014        div
 6015    }
 6016
 6017    pub fn has_active_modal(&self, _: &mut Window, cx: &mut App) -> bool {
 6018        self.modal_layer.read(cx).has_active_modal()
 6019    }
 6020
 6021    pub fn active_modal<V: ManagedView + 'static>(&self, cx: &App) -> Option<Entity<V>> {
 6022        self.modal_layer.read(cx).active_modal()
 6023    }
 6024
 6025    pub fn toggle_modal<V: ModalView, B>(&mut self, window: &mut Window, cx: &mut App, build: B)
 6026    where
 6027        B: FnOnce(&mut Window, &mut Context<V>) -> V,
 6028    {
 6029        self.modal_layer.update(cx, |modal_layer, cx| {
 6030            modal_layer.toggle_modal(window, cx, build)
 6031        })
 6032    }
 6033
 6034    pub fn hide_modal(&mut self, window: &mut Window, cx: &mut App) -> bool {
 6035        self.modal_layer
 6036            .update(cx, |modal_layer, cx| modal_layer.hide_modal(window, cx))
 6037    }
 6038
 6039    pub fn toggle_status_toast<V: ToastView>(&mut self, entity: Entity<V>, cx: &mut App) {
 6040        self.toast_layer
 6041            .update(cx, |toast_layer, cx| toast_layer.toggle_toast(cx, entity))
 6042    }
 6043
 6044    pub fn toggle_centered_layout(
 6045        &mut self,
 6046        _: &ToggleCenteredLayout,
 6047        _: &mut Window,
 6048        cx: &mut Context<Self>,
 6049    ) {
 6050        self.centered_layout = !self.centered_layout;
 6051        if let Some(database_id) = self.database_id() {
 6052            cx.background_spawn(DB.set_centered_layout(database_id, self.centered_layout))
 6053                .detach_and_log_err(cx);
 6054        }
 6055        cx.notify();
 6056    }
 6057
 6058    fn adjust_padding(padding: Option<f32>) -> f32 {
 6059        padding
 6060            .unwrap_or(CenteredPaddingSettings::default().0)
 6061            .clamp(
 6062                CenteredPaddingSettings::MIN_PADDING,
 6063                CenteredPaddingSettings::MAX_PADDING,
 6064            )
 6065    }
 6066
 6067    fn render_dock(
 6068        &self,
 6069        position: DockPosition,
 6070        dock: &Entity<Dock>,
 6071        window: &mut Window,
 6072        cx: &mut App,
 6073    ) -> Option<Div> {
 6074        if self.zoomed_position == Some(position) {
 6075            return None;
 6076        }
 6077
 6078        let leader_border = dock.read(cx).active_panel().and_then(|panel| {
 6079            let pane = panel.pane(cx)?;
 6080            let follower_states = &self.follower_states;
 6081            leader_border_for_pane(follower_states, &pane, window, cx)
 6082        });
 6083
 6084        Some(
 6085            div()
 6086                .flex()
 6087                .flex_none()
 6088                .overflow_hidden()
 6089                .child(dock.clone())
 6090                .children(leader_border),
 6091        )
 6092    }
 6093
 6094    pub fn for_window(window: &mut Window, _: &mut App) -> Option<Entity<Workspace>> {
 6095        window.root().flatten()
 6096    }
 6097
 6098    pub fn zoomed_item(&self) -> Option<&AnyWeakView> {
 6099        self.zoomed.as_ref()
 6100    }
 6101
 6102    pub fn activate_next_window(&mut self, cx: &mut Context<Self>) {
 6103        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 6104            return;
 6105        };
 6106        let windows = cx.windows();
 6107        let next_window =
 6108            SystemWindowTabController::get_next_tab_group_window(cx, current_window_id).or_else(
 6109                || {
 6110                    windows
 6111                        .iter()
 6112                        .cycle()
 6113                        .skip_while(|window| window.window_id() != current_window_id)
 6114                        .nth(1)
 6115                },
 6116            );
 6117
 6118        if let Some(window) = next_window {
 6119            window
 6120                .update(cx, |_, window, _| window.activate_window())
 6121                .ok();
 6122        }
 6123    }
 6124
 6125    pub fn activate_previous_window(&mut self, cx: &mut Context<Self>) {
 6126        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 6127            return;
 6128        };
 6129        let windows = cx.windows();
 6130        let prev_window =
 6131            SystemWindowTabController::get_prev_tab_group_window(cx, current_window_id).or_else(
 6132                || {
 6133                    windows
 6134                        .iter()
 6135                        .rev()
 6136                        .cycle()
 6137                        .skip_while(|window| window.window_id() != current_window_id)
 6138                        .nth(1)
 6139                },
 6140            );
 6141
 6142        if let Some(window) = prev_window {
 6143            window
 6144                .update(cx, |_, window, _| window.activate_window())
 6145                .ok();
 6146        }
 6147    }
 6148
 6149    pub fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
 6150        if cx.stop_active_drag(window) {
 6151        } else if let Some((notification_id, _)) = self.notifications.pop() {
 6152            dismiss_app_notification(&notification_id, cx);
 6153        } else {
 6154            cx.propagate();
 6155        }
 6156    }
 6157
 6158    fn adjust_dock_size_by_px(
 6159        &mut self,
 6160        panel_size: Pixels,
 6161        dock_pos: DockPosition,
 6162        px: Pixels,
 6163        window: &mut Window,
 6164        cx: &mut Context<Self>,
 6165    ) {
 6166        match dock_pos {
 6167            DockPosition::Left => self.resize_left_dock(panel_size + px, window, cx),
 6168            DockPosition::Right => self.resize_right_dock(panel_size + px, window, cx),
 6169            DockPosition::Bottom => self.resize_bottom_dock(panel_size + px, window, cx),
 6170        }
 6171    }
 6172
 6173    fn resize_left_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 6174        let size = new_size.min(self.bounds.right() - RESIZE_HANDLE_SIZE);
 6175
 6176        self.left_dock.update(cx, |left_dock, cx| {
 6177            if WorkspaceSettings::get_global(cx)
 6178                .resize_all_panels_in_dock
 6179                .contains(&DockPosition::Left)
 6180            {
 6181                left_dock.resize_all_panels(Some(size), window, cx);
 6182            } else {
 6183                left_dock.resize_active_panel(Some(size), window, cx);
 6184            }
 6185        });
 6186    }
 6187
 6188    fn resize_right_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 6189        let mut size = new_size.max(self.bounds.left() - RESIZE_HANDLE_SIZE);
 6190        self.left_dock.read_with(cx, |left_dock, cx| {
 6191            let left_dock_size = left_dock
 6192                .active_panel_size(window, cx)
 6193                .unwrap_or(Pixels::ZERO);
 6194            if left_dock_size + size > self.bounds.right() {
 6195                size = self.bounds.right() - left_dock_size
 6196            }
 6197        });
 6198        self.right_dock.update(cx, |right_dock, cx| {
 6199            if WorkspaceSettings::get_global(cx)
 6200                .resize_all_panels_in_dock
 6201                .contains(&DockPosition::Right)
 6202            {
 6203                right_dock.resize_all_panels(Some(size), window, cx);
 6204            } else {
 6205                right_dock.resize_active_panel(Some(size), window, cx);
 6206            }
 6207        });
 6208    }
 6209
 6210    fn resize_bottom_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 6211        let size = new_size.min(self.bounds.bottom() - RESIZE_HANDLE_SIZE - self.bounds.top());
 6212        self.bottom_dock.update(cx, |bottom_dock, cx| {
 6213            if WorkspaceSettings::get_global(cx)
 6214                .resize_all_panels_in_dock
 6215                .contains(&DockPosition::Bottom)
 6216            {
 6217                bottom_dock.resize_all_panels(Some(size), window, cx);
 6218            } else {
 6219                bottom_dock.resize_active_panel(Some(size), window, cx);
 6220            }
 6221        });
 6222    }
 6223
 6224    fn toggle_edit_predictions_all_files(
 6225        &mut self,
 6226        _: &ToggleEditPrediction,
 6227        _window: &mut Window,
 6228        cx: &mut Context<Self>,
 6229    ) {
 6230        let fs = self.project().read(cx).fs().clone();
 6231        let show_edit_predictions = all_language_settings(None, cx).show_edit_predictions(None, cx);
 6232        update_settings_file(fs, cx, move |file, _| {
 6233            file.project.all_languages.defaults.show_edit_predictions = Some(!show_edit_predictions)
 6234        });
 6235    }
 6236}
 6237
 6238fn leader_border_for_pane(
 6239    follower_states: &HashMap<CollaboratorId, FollowerState>,
 6240    pane: &Entity<Pane>,
 6241    _: &Window,
 6242    cx: &App,
 6243) -> Option<Div> {
 6244    let (leader_id, _follower_state) = follower_states.iter().find_map(|(leader_id, state)| {
 6245        if state.pane() == pane {
 6246            Some((*leader_id, state))
 6247        } else {
 6248            None
 6249        }
 6250    })?;
 6251
 6252    let mut leader_color = match leader_id {
 6253        CollaboratorId::PeerId(leader_peer_id) => {
 6254            let room = ActiveCall::try_global(cx)?.read(cx).room()?.read(cx);
 6255            let leader = room.remote_participant_for_peer_id(leader_peer_id)?;
 6256
 6257            cx.theme()
 6258                .players()
 6259                .color_for_participant(leader.participant_index.0)
 6260                .cursor
 6261        }
 6262        CollaboratorId::Agent => cx.theme().players().agent().cursor,
 6263    };
 6264    leader_color.fade_out(0.3);
 6265    Some(
 6266        div()
 6267            .absolute()
 6268            .size_full()
 6269            .left_0()
 6270            .top_0()
 6271            .border_2()
 6272            .border_color(leader_color),
 6273    )
 6274}
 6275
 6276fn window_bounds_env_override() -> Option<Bounds<Pixels>> {
 6277    ZED_WINDOW_POSITION
 6278        .zip(*ZED_WINDOW_SIZE)
 6279        .map(|(position, size)| Bounds {
 6280            origin: position,
 6281            size,
 6282        })
 6283}
 6284
 6285fn open_items(
 6286    serialized_workspace: Option<SerializedWorkspace>,
 6287    mut project_paths_to_open: Vec<(PathBuf, Option<ProjectPath>)>,
 6288    window: &mut Window,
 6289    cx: &mut Context<Workspace>,
 6290) -> impl 'static + Future<Output = Result<Vec<Option<Result<Box<dyn ItemHandle>>>>>> + use<> {
 6291    let restored_items = serialized_workspace.map(|serialized_workspace| {
 6292        Workspace::load_workspace(
 6293            serialized_workspace,
 6294            project_paths_to_open
 6295                .iter()
 6296                .map(|(_, project_path)| project_path)
 6297                .cloned()
 6298                .collect(),
 6299            window,
 6300            cx,
 6301        )
 6302    });
 6303
 6304    cx.spawn_in(window, async move |workspace, cx| {
 6305        let mut opened_items = Vec::with_capacity(project_paths_to_open.len());
 6306
 6307        if let Some(restored_items) = restored_items {
 6308            let restored_items = restored_items.await?;
 6309
 6310            let restored_project_paths = restored_items
 6311                .iter()
 6312                .filter_map(|item| {
 6313                    cx.update(|_, cx| item.as_ref()?.project_path(cx))
 6314                        .ok()
 6315                        .flatten()
 6316                })
 6317                .collect::<HashSet<_>>();
 6318
 6319            for restored_item in restored_items {
 6320                opened_items.push(restored_item.map(Ok));
 6321            }
 6322
 6323            project_paths_to_open
 6324                .iter_mut()
 6325                .for_each(|(_, project_path)| {
 6326                    if let Some(project_path_to_open) = project_path
 6327                        && restored_project_paths.contains(project_path_to_open)
 6328                    {
 6329                        *project_path = None;
 6330                    }
 6331                });
 6332        } else {
 6333            for _ in 0..project_paths_to_open.len() {
 6334                opened_items.push(None);
 6335            }
 6336        }
 6337        assert!(opened_items.len() == project_paths_to_open.len());
 6338
 6339        let tasks =
 6340            project_paths_to_open
 6341                .into_iter()
 6342                .enumerate()
 6343                .map(|(ix, (abs_path, project_path))| {
 6344                    let workspace = workspace.clone();
 6345                    cx.spawn(async move |cx| {
 6346                        let file_project_path = project_path?;
 6347                        let abs_path_task = workspace.update(cx, |workspace, cx| {
 6348                            workspace.project().update(cx, |project, cx| {
 6349                                project.resolve_abs_path(abs_path.to_string_lossy().as_ref(), cx)
 6350                            })
 6351                        });
 6352
 6353                        // We only want to open file paths here. If one of the items
 6354                        // here is a directory, it was already opened further above
 6355                        // with a `find_or_create_worktree`.
 6356                        if let Ok(task) = abs_path_task
 6357                            && task.await.is_none_or(|p| p.is_file())
 6358                        {
 6359                            return Some((
 6360                                ix,
 6361                                workspace
 6362                                    .update_in(cx, |workspace, window, cx| {
 6363                                        workspace.open_path(
 6364                                            file_project_path,
 6365                                            None,
 6366                                            true,
 6367                                            window,
 6368                                            cx,
 6369                                        )
 6370                                    })
 6371                                    .log_err()?
 6372                                    .await,
 6373                            ));
 6374                        }
 6375                        None
 6376                    })
 6377                });
 6378
 6379        let tasks = tasks.collect::<Vec<_>>();
 6380
 6381        let tasks = futures::future::join_all(tasks);
 6382        for (ix, path_open_result) in tasks.await.into_iter().flatten() {
 6383            opened_items[ix] = Some(path_open_result);
 6384        }
 6385
 6386        Ok(opened_items)
 6387    })
 6388}
 6389
 6390enum ActivateInDirectionTarget {
 6391    Pane(Entity<Pane>),
 6392    Dock(Entity<Dock>),
 6393}
 6394
 6395fn notify_if_database_failed(workspace: WindowHandle<Workspace>, cx: &mut AsyncApp) {
 6396    workspace
 6397        .update(cx, |workspace, _, cx| {
 6398            if (*db::ALL_FILE_DB_FAILED).load(std::sync::atomic::Ordering::Acquire) {
 6399                struct DatabaseFailedNotification;
 6400
 6401                workspace.show_notification(
 6402                    NotificationId::unique::<DatabaseFailedNotification>(),
 6403                    cx,
 6404                    |cx| {
 6405                        cx.new(|cx| {
 6406                            MessageNotification::new("Failed to load the database file.", cx)
 6407                                .primary_message("File an Issue")
 6408                                .primary_icon(IconName::Plus)
 6409                                .primary_on_click(|window, cx| {
 6410                                    window.dispatch_action(Box::new(FileBugReport), cx)
 6411                                })
 6412                        })
 6413                    },
 6414                );
 6415            }
 6416        })
 6417        .log_err();
 6418}
 6419
 6420fn px_with_ui_font_fallback(val: u32, cx: &Context<Workspace>) -> Pixels {
 6421    if val == 0 {
 6422        ThemeSettings::get_global(cx).ui_font_size(cx)
 6423    } else {
 6424        px(val as f32)
 6425    }
 6426}
 6427
 6428fn adjust_active_dock_size_by_px(
 6429    px: Pixels,
 6430    workspace: &mut Workspace,
 6431    window: &mut Window,
 6432    cx: &mut Context<Workspace>,
 6433) {
 6434    let Some(active_dock) = workspace
 6435        .all_docks()
 6436        .into_iter()
 6437        .find(|dock| dock.focus_handle(cx).contains_focused(window, cx))
 6438    else {
 6439        return;
 6440    };
 6441    let dock = active_dock.read(cx);
 6442    let Some(panel_size) = dock.active_panel_size(window, cx) else {
 6443        return;
 6444    };
 6445    let dock_pos = dock.position();
 6446    workspace.adjust_dock_size_by_px(panel_size, dock_pos, px, window, cx);
 6447}
 6448
 6449fn adjust_open_docks_size_by_px(
 6450    px: Pixels,
 6451    workspace: &mut Workspace,
 6452    window: &mut Window,
 6453    cx: &mut Context<Workspace>,
 6454) {
 6455    let docks = workspace
 6456        .all_docks()
 6457        .into_iter()
 6458        .filter_map(|dock| {
 6459            if dock.read(cx).is_open() {
 6460                let dock = dock.read(cx);
 6461                let panel_size = dock.active_panel_size(window, cx)?;
 6462                let dock_pos = dock.position();
 6463                Some((panel_size, dock_pos, px))
 6464            } else {
 6465                None
 6466            }
 6467        })
 6468        .collect::<Vec<_>>();
 6469
 6470    docks
 6471        .into_iter()
 6472        .for_each(|(panel_size, dock_pos, offset)| {
 6473            workspace.adjust_dock_size_by_px(panel_size, dock_pos, offset, window, cx);
 6474        });
 6475}
 6476
 6477impl Focusable for Workspace {
 6478    fn focus_handle(&self, cx: &App) -> FocusHandle {
 6479        self.active_pane.focus_handle(cx)
 6480    }
 6481}
 6482
 6483#[derive(Clone)]
 6484struct DraggedDock(DockPosition);
 6485
 6486impl Render for DraggedDock {
 6487    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
 6488        gpui::Empty
 6489    }
 6490}
 6491
 6492impl Render for Workspace {
 6493    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 6494        static FIRST_PAINT: AtomicBool = AtomicBool::new(true);
 6495        if FIRST_PAINT.swap(false, std::sync::atomic::Ordering::Relaxed) {
 6496            log::info!("Rendered first frame");
 6497        }
 6498        let mut context = KeyContext::new_with_defaults();
 6499        context.add("Workspace");
 6500        context.set("keyboard_layout", cx.keyboard_layout().name().to_string());
 6501        if let Some(status) = self
 6502            .debugger_provider
 6503            .as_ref()
 6504            .and_then(|provider| provider.active_thread_state(cx))
 6505        {
 6506            match status {
 6507                ThreadStatus::Running | ThreadStatus::Stepping => {
 6508                    context.add("debugger_running");
 6509                }
 6510                ThreadStatus::Stopped => context.add("debugger_stopped"),
 6511                ThreadStatus::Exited | ThreadStatus::Ended => {}
 6512            }
 6513        }
 6514
 6515        if self.left_dock.read(cx).is_open() {
 6516            if let Some(active_panel) = self.left_dock.read(cx).active_panel() {
 6517                context.set("left_dock", active_panel.panel_key());
 6518            }
 6519        }
 6520
 6521        if self.right_dock.read(cx).is_open() {
 6522            if let Some(active_panel) = self.right_dock.read(cx).active_panel() {
 6523                context.set("right_dock", active_panel.panel_key());
 6524            }
 6525        }
 6526
 6527        if self.bottom_dock.read(cx).is_open() {
 6528            if let Some(active_panel) = self.bottom_dock.read(cx).active_panel() {
 6529                context.set("bottom_dock", active_panel.panel_key());
 6530            }
 6531        }
 6532
 6533        let centered_layout = self.centered_layout
 6534            && self.center.panes().len() == 1
 6535            && self.active_item(cx).is_some();
 6536        let render_padding = |size| {
 6537            (size > 0.0).then(|| {
 6538                div()
 6539                    .h_full()
 6540                    .w(relative(size))
 6541                    .bg(cx.theme().colors().editor_background)
 6542                    .border_color(cx.theme().colors().pane_group_border)
 6543            })
 6544        };
 6545        let paddings = if centered_layout {
 6546            let settings = WorkspaceSettings::get_global(cx).centered_layout;
 6547            (
 6548                render_padding(Self::adjust_padding(
 6549                    settings.left_padding.map(|padding| padding.0),
 6550                )),
 6551                render_padding(Self::adjust_padding(
 6552                    settings.right_padding.map(|padding| padding.0),
 6553                )),
 6554            )
 6555        } else {
 6556            (None, None)
 6557        };
 6558        let ui_font = theme::setup_ui_font(window, cx);
 6559
 6560        let theme = cx.theme().clone();
 6561        let colors = theme.colors();
 6562        let notification_entities = self
 6563            .notifications
 6564            .iter()
 6565            .map(|(_, notification)| notification.entity_id())
 6566            .collect::<Vec<_>>();
 6567        let bottom_dock_layout = WorkspaceSettings::get_global(cx).bottom_dock_layout;
 6568
 6569        client_side_decorations(
 6570            self.actions(div(), window, cx)
 6571                .key_context(context)
 6572                .relative()
 6573                .size_full()
 6574                .flex()
 6575                .flex_col()
 6576                .font(ui_font)
 6577                .gap_0()
 6578                .justify_start()
 6579                .items_start()
 6580                .text_color(colors.text)
 6581                .overflow_hidden()
 6582                .children(self.titlebar_item.clone())
 6583                .on_modifiers_changed(move |_, _, cx| {
 6584                    for &id in &notification_entities {
 6585                        cx.notify(id);
 6586                    }
 6587                })
 6588                .child(
 6589                    div()
 6590                        .size_full()
 6591                        .relative()
 6592                        .flex_1()
 6593                        .flex()
 6594                        .flex_col()
 6595                        .child(
 6596                            div()
 6597                                .id("workspace")
 6598                                .bg(colors.background)
 6599                                .relative()
 6600                                .flex_1()
 6601                                .w_full()
 6602                                .flex()
 6603                                .flex_col()
 6604                                .overflow_hidden()
 6605                                .border_t_1()
 6606                                .border_b_1()
 6607                                .border_color(colors.border)
 6608                                .child({
 6609                                    let this = cx.entity();
 6610                                    canvas(
 6611                                        move |bounds, window, cx| {
 6612                                            this.update(cx, |this, cx| {
 6613                                                let bounds_changed = this.bounds != bounds;
 6614                                                this.bounds = bounds;
 6615
 6616                                                if bounds_changed {
 6617                                                    this.left_dock.update(cx, |dock, cx| {
 6618                                                        dock.clamp_panel_size(
 6619                                                            bounds.size.width,
 6620                                                            window,
 6621                                                            cx,
 6622                                                        )
 6623                                                    });
 6624
 6625                                                    this.right_dock.update(cx, |dock, cx| {
 6626                                                        dock.clamp_panel_size(
 6627                                                            bounds.size.width,
 6628                                                            window,
 6629                                                            cx,
 6630                                                        )
 6631                                                    });
 6632
 6633                                                    this.bottom_dock.update(cx, |dock, cx| {
 6634                                                        dock.clamp_panel_size(
 6635                                                            bounds.size.height,
 6636                                                            window,
 6637                                                            cx,
 6638                                                        )
 6639                                                    });
 6640                                                }
 6641                                            })
 6642                                        },
 6643                                        |_, _, _, _| {},
 6644                                    )
 6645                                    .absolute()
 6646                                    .size_full()
 6647                                })
 6648                                .when(self.zoomed.is_none(), |this| {
 6649                                    this.on_drag_move(cx.listener(
 6650                                        move |workspace,
 6651                                              e: &DragMoveEvent<DraggedDock>,
 6652                                              window,
 6653                                              cx| {
 6654                                            if workspace.previous_dock_drag_coordinates
 6655                                                != Some(e.event.position)
 6656                                            {
 6657                                                workspace.previous_dock_drag_coordinates =
 6658                                                    Some(e.event.position);
 6659                                                match e.drag(cx).0 {
 6660                                                    DockPosition::Left => {
 6661                                                        workspace.resize_left_dock(
 6662                                                            e.event.position.x
 6663                                                                - workspace.bounds.left(),
 6664                                                            window,
 6665                                                            cx,
 6666                                                        );
 6667                                                    }
 6668                                                    DockPosition::Right => {
 6669                                                        workspace.resize_right_dock(
 6670                                                            workspace.bounds.right()
 6671                                                                - e.event.position.x,
 6672                                                            window,
 6673                                                            cx,
 6674                                                        );
 6675                                                    }
 6676                                                    DockPosition::Bottom => {
 6677                                                        workspace.resize_bottom_dock(
 6678                                                            workspace.bounds.bottom()
 6679                                                                - e.event.position.y,
 6680                                                            window,
 6681                                                            cx,
 6682                                                        );
 6683                                                    }
 6684                                                };
 6685                                                workspace.serialize_workspace(window, cx);
 6686                                            }
 6687                                        },
 6688                                    ))
 6689                                })
 6690                                .child({
 6691                                    match bottom_dock_layout {
 6692                                        BottomDockLayout::Full => div()
 6693                                            .flex()
 6694                                            .flex_col()
 6695                                            .h_full()
 6696                                            .child(
 6697                                                div()
 6698                                                    .flex()
 6699                                                    .flex_row()
 6700                                                    .flex_1()
 6701                                                    .overflow_hidden()
 6702                                                    .children(self.render_dock(
 6703                                                        DockPosition::Left,
 6704                                                        &self.left_dock,
 6705                                                        window,
 6706                                                        cx,
 6707                                                    ))
 6708                                                    .child(
 6709                                                        div()
 6710                                                            .flex()
 6711                                                            .flex_col()
 6712                                                            .flex_1()
 6713                                                            .overflow_hidden()
 6714                                                            .child(
 6715                                                                h_flex()
 6716                                                                    .flex_1()
 6717                                                                    .when_some(
 6718                                                                        paddings.0,
 6719                                                                        |this, p| {
 6720                                                                            this.child(
 6721                                                                                p.border_r_1(),
 6722                                                                            )
 6723                                                                        },
 6724                                                                    )
 6725                                                                    .child(self.center.render(
 6726                                                                        self.zoomed.as_ref(),
 6727                                                                        &PaneRenderContext {
 6728                                                                            follower_states:
 6729                                                                                &self.follower_states,
 6730                                                                            active_call: self.active_call(),
 6731                                                                            active_pane: &self.active_pane,
 6732                                                                            app_state: &self.app_state,
 6733                                                                            project: &self.project,
 6734                                                                            workspace: &self.weak_self,
 6735                                                                        },
 6736                                                                        window,
 6737                                                                        cx,
 6738                                                                    ))
 6739                                                                    .when_some(
 6740                                                                        paddings.1,
 6741                                                                        |this, p| {
 6742                                                                            this.child(
 6743                                                                                p.border_l_1(),
 6744                                                                            )
 6745                                                                        },
 6746                                                                    ),
 6747                                                            ),
 6748                                                    )
 6749                                                    .children(self.render_dock(
 6750                                                        DockPosition::Right,
 6751                                                        &self.right_dock,
 6752                                                        window,
 6753                                                        cx,
 6754                                                    )),
 6755                                            )
 6756                                            .child(div().w_full().children(self.render_dock(
 6757                                                DockPosition::Bottom,
 6758                                                &self.bottom_dock,
 6759                                                window,
 6760                                                cx
 6761                                            ))),
 6762
 6763                                        BottomDockLayout::LeftAligned => div()
 6764                                            .flex()
 6765                                            .flex_row()
 6766                                            .h_full()
 6767                                            .child(
 6768                                                div()
 6769                                                    .flex()
 6770                                                    .flex_col()
 6771                                                    .flex_1()
 6772                                                    .h_full()
 6773                                                    .child(
 6774                                                        div()
 6775                                                            .flex()
 6776                                                            .flex_row()
 6777                                                            .flex_1()
 6778                                                            .children(self.render_dock(DockPosition::Left, &self.left_dock, window, cx))
 6779                                                            .child(
 6780                                                                div()
 6781                                                                    .flex()
 6782                                                                    .flex_col()
 6783                                                                    .flex_1()
 6784                                                                    .overflow_hidden()
 6785                                                                    .child(
 6786                                                                        h_flex()
 6787                                                                            .flex_1()
 6788                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6789                                                                            .child(self.center.render(
 6790                                                                                self.zoomed.as_ref(),
 6791                                                                                &PaneRenderContext {
 6792                                                                                    follower_states:
 6793                                                                                        &self.follower_states,
 6794                                                                                    active_call: self.active_call(),
 6795                                                                                    active_pane: &self.active_pane,
 6796                                                                                    app_state: &self.app_state,
 6797                                                                                    project: &self.project,
 6798                                                                                    workspace: &self.weak_self,
 6799                                                                                },
 6800                                                                                window,
 6801                                                                                cx,
 6802                                                                            ))
 6803                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6804                                                                    )
 6805                                                            )
 6806                                                    )
 6807                                                    .child(
 6808                                                        div()
 6809                                                            .w_full()
 6810                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6811                                                    ),
 6812                                            )
 6813                                            .children(self.render_dock(
 6814                                                DockPosition::Right,
 6815                                                &self.right_dock,
 6816                                                window,
 6817                                                cx,
 6818                                            )),
 6819
 6820                                        BottomDockLayout::RightAligned => div()
 6821                                            .flex()
 6822                                            .flex_row()
 6823                                            .h_full()
 6824                                            .children(self.render_dock(
 6825                                                DockPosition::Left,
 6826                                                &self.left_dock,
 6827                                                window,
 6828                                                cx,
 6829                                            ))
 6830                                            .child(
 6831                                                div()
 6832                                                    .flex()
 6833                                                    .flex_col()
 6834                                                    .flex_1()
 6835                                                    .h_full()
 6836                                                    .child(
 6837                                                        div()
 6838                                                            .flex()
 6839                                                            .flex_row()
 6840                                                            .flex_1()
 6841                                                            .child(
 6842                                                                div()
 6843                                                                    .flex()
 6844                                                                    .flex_col()
 6845                                                                    .flex_1()
 6846                                                                    .overflow_hidden()
 6847                                                                    .child(
 6848                                                                        h_flex()
 6849                                                                            .flex_1()
 6850                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6851                                                                            .child(self.center.render(
 6852                                                                                self.zoomed.as_ref(),
 6853                                                                                &PaneRenderContext {
 6854                                                                                    follower_states:
 6855                                                                                        &self.follower_states,
 6856                                                                                    active_call: self.active_call(),
 6857                                                                                    active_pane: &self.active_pane,
 6858                                                                                    app_state: &self.app_state,
 6859                                                                                    project: &self.project,
 6860                                                                                    workspace: &self.weak_self,
 6861                                                                                },
 6862                                                                                window,
 6863                                                                                cx,
 6864                                                                            ))
 6865                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6866                                                                    )
 6867                                                            )
 6868                                                            .children(self.render_dock(DockPosition::Right, &self.right_dock, window, cx))
 6869                                                    )
 6870                                                    .child(
 6871                                                        div()
 6872                                                            .w_full()
 6873                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6874                                                    ),
 6875                                            ),
 6876
 6877                                        BottomDockLayout::Contained => div()
 6878                                            .flex()
 6879                                            .flex_row()
 6880                                            .h_full()
 6881                                            .children(self.render_dock(
 6882                                                DockPosition::Left,
 6883                                                &self.left_dock,
 6884                                                window,
 6885                                                cx,
 6886                                            ))
 6887                                            .child(
 6888                                                div()
 6889                                                    .flex()
 6890                                                    .flex_col()
 6891                                                    .flex_1()
 6892                                                    .overflow_hidden()
 6893                                                    .child(
 6894                                                        h_flex()
 6895                                                            .flex_1()
 6896                                                            .when_some(paddings.0, |this, p| {
 6897                                                                this.child(p.border_r_1())
 6898                                                            })
 6899                                                            .child(self.center.render(
 6900                                                                self.zoomed.as_ref(),
 6901                                                                &PaneRenderContext {
 6902                                                                    follower_states:
 6903                                                                        &self.follower_states,
 6904                                                                    active_call: self.active_call(),
 6905                                                                    active_pane: &self.active_pane,
 6906                                                                    app_state: &self.app_state,
 6907                                                                    project: &self.project,
 6908                                                                    workspace: &self.weak_self,
 6909                                                                },
 6910                                                                window,
 6911                                                                cx,
 6912                                                            ))
 6913                                                            .when_some(paddings.1, |this, p| {
 6914                                                                this.child(p.border_l_1())
 6915                                                            }),
 6916                                                    )
 6917                                                    .children(self.render_dock(
 6918                                                        DockPosition::Bottom,
 6919                                                        &self.bottom_dock,
 6920                                                        window,
 6921                                                        cx,
 6922                                                    )),
 6923                                            )
 6924                                            .children(self.render_dock(
 6925                                                DockPosition::Right,
 6926                                                &self.right_dock,
 6927                                                window,
 6928                                                cx,
 6929                                            )),
 6930                                    }
 6931                                })
 6932                                .children(self.zoomed.as_ref().and_then(|view| {
 6933                                    let zoomed_view = view.upgrade()?;
 6934                                    let div = div()
 6935                                        .occlude()
 6936                                        .absolute()
 6937                                        .overflow_hidden()
 6938                                        .border_color(colors.border)
 6939                                        .bg(colors.background)
 6940                                        .child(zoomed_view)
 6941                                        .inset_0()
 6942                                        .shadow_lg();
 6943
 6944                                    if !WorkspaceSettings::get_global(cx).zoomed_padding {
 6945                                       return Some(div);
 6946                                    }
 6947
 6948                                    Some(match self.zoomed_position {
 6949                                        Some(DockPosition::Left) => div.right_2().border_r_1(),
 6950                                        Some(DockPosition::Right) => div.left_2().border_l_1(),
 6951                                        Some(DockPosition::Bottom) => div.top_2().border_t_1(),
 6952                                        None => {
 6953                                            div.top_2().bottom_2().left_2().right_2().border_1()
 6954                                        }
 6955                                    })
 6956                                }))
 6957                                .children(self.render_notifications(window, cx)),
 6958                        )
 6959                        .when(self.status_bar_visible(cx), |parent| {
 6960                            parent.child(self.status_bar.clone())
 6961                        })
 6962                        .child(self.modal_layer.clone())
 6963                        .child(self.toast_layer.clone()),
 6964                ),
 6965            window,
 6966            cx,
 6967        )
 6968    }
 6969}
 6970
 6971impl WorkspaceStore {
 6972    pub fn new(client: Arc<Client>, cx: &mut Context<Self>) -> Self {
 6973        Self {
 6974            workspaces: Default::default(),
 6975            _subscriptions: vec![
 6976                client.add_request_handler(cx.weak_entity(), Self::handle_follow),
 6977                client.add_message_handler(cx.weak_entity(), Self::handle_update_followers),
 6978            ],
 6979            client,
 6980        }
 6981    }
 6982
 6983    pub fn update_followers(
 6984        &self,
 6985        project_id: Option<u64>,
 6986        update: proto::update_followers::Variant,
 6987        cx: &App,
 6988    ) -> Option<()> {
 6989        let active_call = ActiveCall::try_global(cx)?;
 6990        let room_id = active_call.read(cx).room()?.read(cx).id();
 6991        self.client
 6992            .send(proto::UpdateFollowers {
 6993                room_id,
 6994                project_id,
 6995                variant: Some(update),
 6996            })
 6997            .log_err()
 6998    }
 6999
 7000    pub async fn handle_follow(
 7001        this: Entity<Self>,
 7002        envelope: TypedEnvelope<proto::Follow>,
 7003        mut cx: AsyncApp,
 7004    ) -> Result<proto::FollowResponse> {
 7005        this.update(&mut cx, |this, cx| {
 7006            let follower = Follower {
 7007                project_id: envelope.payload.project_id,
 7008                peer_id: envelope.original_sender_id()?,
 7009            };
 7010
 7011            let mut response = proto::FollowResponse::default();
 7012            this.workspaces.retain(|workspace| {
 7013                workspace
 7014                    .update(cx, |workspace, window, cx| {
 7015                        let handler_response =
 7016                            workspace.handle_follow(follower.project_id, window, cx);
 7017                        if let Some(active_view) = handler_response.active_view
 7018                            && workspace.project.read(cx).remote_id() == follower.project_id
 7019                        {
 7020                            response.active_view = Some(active_view)
 7021                        }
 7022                    })
 7023                    .is_ok()
 7024            });
 7025
 7026            Ok(response)
 7027        })?
 7028    }
 7029
 7030    async fn handle_update_followers(
 7031        this: Entity<Self>,
 7032        envelope: TypedEnvelope<proto::UpdateFollowers>,
 7033        mut cx: AsyncApp,
 7034    ) -> Result<()> {
 7035        let leader_id = envelope.original_sender_id()?;
 7036        let update = envelope.payload;
 7037
 7038        this.update(&mut cx, |this, cx| {
 7039            this.workspaces.retain(|workspace| {
 7040                workspace
 7041                    .update(cx, |workspace, window, cx| {
 7042                        let project_id = workspace.project.read(cx).remote_id();
 7043                        if update.project_id != project_id && update.project_id.is_some() {
 7044                            return;
 7045                        }
 7046                        workspace.handle_update_followers(leader_id, update.clone(), window, cx);
 7047                    })
 7048                    .is_ok()
 7049            });
 7050            Ok(())
 7051        })?
 7052    }
 7053
 7054    pub fn workspaces(&self) -> &HashSet<WindowHandle<Workspace>> {
 7055        &self.workspaces
 7056    }
 7057}
 7058
 7059impl ViewId {
 7060    pub(crate) fn from_proto(message: proto::ViewId) -> Result<Self> {
 7061        Ok(Self {
 7062            creator: message
 7063                .creator
 7064                .map(CollaboratorId::PeerId)
 7065                .context("creator is missing")?,
 7066            id: message.id,
 7067        })
 7068    }
 7069
 7070    pub(crate) fn to_proto(self) -> Option<proto::ViewId> {
 7071        if let CollaboratorId::PeerId(peer_id) = self.creator {
 7072            Some(proto::ViewId {
 7073                creator: Some(peer_id),
 7074                id: self.id,
 7075            })
 7076        } else {
 7077            None
 7078        }
 7079    }
 7080}
 7081
 7082impl FollowerState {
 7083    fn pane(&self) -> &Entity<Pane> {
 7084        self.dock_pane.as_ref().unwrap_or(&self.center_pane)
 7085    }
 7086}
 7087
 7088pub trait WorkspaceHandle {
 7089    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath>;
 7090}
 7091
 7092impl WorkspaceHandle for Entity<Workspace> {
 7093    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath> {
 7094        self.read(cx)
 7095            .worktrees(cx)
 7096            .flat_map(|worktree| {
 7097                let worktree_id = worktree.read(cx).id();
 7098                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
 7099                    worktree_id,
 7100                    path: f.path.clone(),
 7101                })
 7102            })
 7103            .collect::<Vec<_>>()
 7104    }
 7105}
 7106
 7107pub async fn last_opened_workspace_location() -> Option<(SerializedWorkspaceLocation, PathList)> {
 7108    DB.last_workspace().await.log_err().flatten()
 7109}
 7110
 7111pub fn last_session_workspace_locations(
 7112    last_session_id: &str,
 7113    last_session_window_stack: Option<Vec<WindowId>>,
 7114) -> Option<Vec<(SerializedWorkspaceLocation, PathList)>> {
 7115    DB.last_session_workspace_locations(last_session_id, last_session_window_stack)
 7116        .log_err()
 7117}
 7118
 7119actions!(
 7120    collab,
 7121    [
 7122        /// Opens the channel notes for the current call.
 7123        ///
 7124        /// Use `collab_panel::OpenSelectedChannelNotes` to open the channel notes for the selected
 7125        /// channel in the collab panel.
 7126        ///
 7127        /// If you want to open a specific channel, use `zed::OpenZedUrl` with a channel notes URL -
 7128        /// can be copied via "Copy link to section" in the context menu of the channel notes
 7129        /// buffer. These URLs look like `https://zed.dev/channel/channel-name-CHANNEL_ID/notes`.
 7130        OpenChannelNotes,
 7131        /// Mutes your microphone.
 7132        Mute,
 7133        /// Deafens yourself (mute both microphone and speakers).
 7134        Deafen,
 7135        /// Leaves the current call.
 7136        LeaveCall,
 7137        /// Shares the current project with collaborators.
 7138        ShareProject,
 7139        /// Shares your screen with collaborators.
 7140        ScreenShare
 7141    ]
 7142);
 7143actions!(
 7144    zed,
 7145    [
 7146        /// Opens the Zed log file.
 7147        OpenLog,
 7148        /// Reveals the Zed log file in the system file manager.
 7149        RevealLogInFileManager
 7150    ]
 7151);
 7152
 7153async fn join_channel_internal(
 7154    channel_id: ChannelId,
 7155    app_state: &Arc<AppState>,
 7156    requesting_window: Option<WindowHandle<Workspace>>,
 7157    active_call: &Entity<ActiveCall>,
 7158    cx: &mut AsyncApp,
 7159) -> Result<bool> {
 7160    let (should_prompt, open_room) = active_call.update(cx, |active_call, cx| {
 7161        let Some(room) = active_call.room().map(|room| room.read(cx)) else {
 7162            return (false, None);
 7163        };
 7164
 7165        let already_in_channel = room.channel_id() == Some(channel_id);
 7166        let should_prompt = room.is_sharing_project()
 7167            && !room.remote_participants().is_empty()
 7168            && !already_in_channel;
 7169        let open_room = if already_in_channel {
 7170            active_call.room().cloned()
 7171        } else {
 7172            None
 7173        };
 7174        (should_prompt, open_room)
 7175    })?;
 7176
 7177    if let Some(room) = open_room {
 7178        let task = room.update(cx, |room, cx| {
 7179            if let Some((project, host)) = room.most_active_project(cx) {
 7180                return Some(join_in_room_project(project, host, app_state.clone(), cx));
 7181            }
 7182
 7183            None
 7184        })?;
 7185        if let Some(task) = task {
 7186            task.await?;
 7187        }
 7188        return anyhow::Ok(true);
 7189    }
 7190
 7191    if should_prompt {
 7192        if let Some(workspace) = requesting_window {
 7193            let answer = workspace
 7194                .update(cx, |_, window, cx| {
 7195                    window.prompt(
 7196                        PromptLevel::Warning,
 7197                        "Do you want to switch channels?",
 7198                        Some("Leaving this call will unshare your current project."),
 7199                        &["Yes, Join Channel", "Cancel"],
 7200                        cx,
 7201                    )
 7202                })?
 7203                .await;
 7204
 7205            if answer == Ok(1) {
 7206                return Ok(false);
 7207            }
 7208        } else {
 7209            return Ok(false); // unreachable!() hopefully
 7210        }
 7211    }
 7212
 7213    let client = cx.update(|cx| active_call.read(cx).client())?;
 7214
 7215    let mut client_status = client.status();
 7216
 7217    // this loop will terminate within client::CONNECTION_TIMEOUT seconds.
 7218    'outer: loop {
 7219        let Some(status) = client_status.recv().await else {
 7220            anyhow::bail!("error connecting");
 7221        };
 7222
 7223        match status {
 7224            Status::Connecting
 7225            | Status::Authenticating
 7226            | Status::Authenticated
 7227            | Status::Reconnecting
 7228            | Status::Reauthenticating
 7229            | Status::Reauthenticated => continue,
 7230            Status::Connected { .. } => break 'outer,
 7231            Status::SignedOut | Status::AuthenticationError => {
 7232                return Err(ErrorCode::SignedOut.into());
 7233            }
 7234            Status::UpgradeRequired => return Err(ErrorCode::UpgradeRequired.into()),
 7235            Status::ConnectionError | Status::ConnectionLost | Status::ReconnectionError { .. } => {
 7236                return Err(ErrorCode::Disconnected.into());
 7237            }
 7238        }
 7239    }
 7240
 7241    let room = active_call
 7242        .update(cx, |active_call, cx| {
 7243            active_call.join_channel(channel_id, cx)
 7244        })?
 7245        .await?;
 7246
 7247    let Some(room) = room else {
 7248        return anyhow::Ok(true);
 7249    };
 7250
 7251    room.update(cx, |room, _| room.room_update_completed())?
 7252        .await;
 7253
 7254    let task = room.update(cx, |room, cx| {
 7255        if let Some((project, host)) = room.most_active_project(cx) {
 7256            return Some(join_in_room_project(project, host, app_state.clone(), cx));
 7257        }
 7258
 7259        // If you are the first to join a channel, see if you should share your project.
 7260        if room.remote_participants().is_empty()
 7261            && !room.local_participant_is_guest()
 7262            && let Some(workspace) = requesting_window
 7263        {
 7264            let project = workspace.update(cx, |workspace, _, cx| {
 7265                let project = workspace.project.read(cx);
 7266
 7267                if !CallSettings::get_global(cx).share_on_join {
 7268                    return None;
 7269                }
 7270
 7271                if (project.is_local() || project.is_via_remote_server())
 7272                    && project.visible_worktrees(cx).any(|tree| {
 7273                        tree.read(cx)
 7274                            .root_entry()
 7275                            .is_some_and(|entry| entry.is_dir())
 7276                    })
 7277                {
 7278                    Some(workspace.project.clone())
 7279                } else {
 7280                    None
 7281                }
 7282            });
 7283            if let Ok(Some(project)) = project {
 7284                return Some(cx.spawn(async move |room, cx| {
 7285                    room.update(cx, |room, cx| room.share_project(project, cx))?
 7286                        .await?;
 7287                    Ok(())
 7288                }));
 7289            }
 7290        }
 7291
 7292        None
 7293    })?;
 7294    if let Some(task) = task {
 7295        task.await?;
 7296        return anyhow::Ok(true);
 7297    }
 7298    anyhow::Ok(false)
 7299}
 7300
 7301pub fn join_channel(
 7302    channel_id: ChannelId,
 7303    app_state: Arc<AppState>,
 7304    requesting_window: Option<WindowHandle<Workspace>>,
 7305    cx: &mut App,
 7306) -> Task<Result<()>> {
 7307    let active_call = ActiveCall::global(cx);
 7308    cx.spawn(async move |cx| {
 7309        let result = join_channel_internal(
 7310            channel_id,
 7311            &app_state,
 7312            requesting_window,
 7313            &active_call,
 7314             cx,
 7315        )
 7316            .await;
 7317
 7318        // join channel succeeded, and opened a window
 7319        if matches!(result, Ok(true)) {
 7320            return anyhow::Ok(());
 7321        }
 7322
 7323        // find an existing workspace to focus and show call controls
 7324        let mut active_window =
 7325            requesting_window.or_else(|| activate_any_workspace_window( cx));
 7326        if active_window.is_none() {
 7327            // no open workspaces, make one to show the error in (blergh)
 7328            let (window_handle, _) = cx
 7329                .update(|cx| {
 7330                    Workspace::new_local(vec![], app_state.clone(), requesting_window, None, cx)
 7331                })?
 7332                .await?;
 7333
 7334            if result.is_ok() {
 7335                cx.update(|cx| {
 7336                    cx.dispatch_action(&OpenChannelNotes);
 7337                }).log_err();
 7338            }
 7339
 7340            active_window = Some(window_handle);
 7341        }
 7342
 7343        if let Err(err) = result {
 7344            log::error!("failed to join channel: {}", err);
 7345            if let Some(active_window) = active_window {
 7346                active_window
 7347                    .update(cx, |_, window, cx| {
 7348                        let detail: SharedString = match err.error_code() {
 7349                            ErrorCode::SignedOut => {
 7350                                "Please sign in to continue.".into()
 7351                            }
 7352                            ErrorCode::UpgradeRequired => {
 7353                                "Your are running an unsupported version of Zed. Please update to continue.".into()
 7354                            }
 7355                            ErrorCode::NoSuchChannel => {
 7356                                "No matching channel was found. Please check the link and try again.".into()
 7357                            }
 7358                            ErrorCode::Forbidden => {
 7359                                "This channel is private, and you do not have access. Please ask someone to add you and try again.".into()
 7360                            }
 7361                            ErrorCode::Disconnected => "Please check your internet connection and try again.".into(),
 7362                            _ => format!("{}\n\nPlease try again.", err).into(),
 7363                        };
 7364                        window.prompt(
 7365                            PromptLevel::Critical,
 7366                            "Failed to join channel",
 7367                            Some(&detail),
 7368                            &["Ok"],
 7369                        cx)
 7370                    })?
 7371                    .await
 7372                    .ok();
 7373            }
 7374        }
 7375
 7376        // return ok, we showed the error to the user.
 7377        anyhow::Ok(())
 7378    })
 7379}
 7380
 7381pub async fn get_any_active_workspace(
 7382    app_state: Arc<AppState>,
 7383    mut cx: AsyncApp,
 7384) -> anyhow::Result<WindowHandle<Workspace>> {
 7385    // find an existing workspace to focus and show call controls
 7386    let active_window = activate_any_workspace_window(&mut cx);
 7387    if active_window.is_none() {
 7388        cx.update(|cx| Workspace::new_local(vec![], app_state.clone(), None, None, cx))?
 7389            .await?;
 7390    }
 7391    activate_any_workspace_window(&mut cx).context("could not open zed")
 7392}
 7393
 7394fn activate_any_workspace_window(cx: &mut AsyncApp) -> Option<WindowHandle<Workspace>> {
 7395    cx.update(|cx| {
 7396        if let Some(workspace_window) = cx
 7397            .active_window()
 7398            .and_then(|window| window.downcast::<Workspace>())
 7399        {
 7400            return Some(workspace_window);
 7401        }
 7402
 7403        for window in cx.windows() {
 7404            if let Some(workspace_window) = window.downcast::<Workspace>() {
 7405                workspace_window
 7406                    .update(cx, |_, window, _| window.activate_window())
 7407                    .ok();
 7408                return Some(workspace_window);
 7409            }
 7410        }
 7411        None
 7412    })
 7413    .ok()
 7414    .flatten()
 7415}
 7416
 7417pub fn local_workspace_windows(cx: &App) -> Vec<WindowHandle<Workspace>> {
 7418    cx.windows()
 7419        .into_iter()
 7420        .filter_map(|window| window.downcast::<Workspace>())
 7421        .filter(|workspace| {
 7422            workspace
 7423                .read(cx)
 7424                .is_ok_and(|workspace| workspace.project.read(cx).is_local())
 7425        })
 7426        .collect()
 7427}
 7428
 7429#[derive(Default)]
 7430pub struct OpenOptions {
 7431    pub visible: Option<OpenVisible>,
 7432    pub focus: Option<bool>,
 7433    pub open_new_workspace: Option<bool>,
 7434    pub prefer_focused_window: bool,
 7435    pub replace_window: Option<WindowHandle<Workspace>>,
 7436    pub env: Option<HashMap<String, String>>,
 7437}
 7438
 7439#[allow(clippy::type_complexity)]
 7440pub fn open_paths(
 7441    abs_paths: &[PathBuf],
 7442    app_state: Arc<AppState>,
 7443    open_options: OpenOptions,
 7444    cx: &mut App,
 7445) -> Task<
 7446    anyhow::Result<(
 7447        WindowHandle<Workspace>,
 7448        Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 7449    )>,
 7450> {
 7451    let abs_paths = abs_paths.to_vec();
 7452    let mut existing = None;
 7453    let mut best_match = None;
 7454    let mut open_visible = OpenVisible::All;
 7455    #[cfg(target_os = "windows")]
 7456    let wsl_path = abs_paths
 7457        .iter()
 7458        .find_map(|p| util::paths::WslPath::from_path(p));
 7459
 7460    cx.spawn(async move |cx| {
 7461        if open_options.open_new_workspace != Some(true) {
 7462            let all_paths = abs_paths.iter().map(|path| app_state.fs.metadata(path));
 7463            let all_metadatas = futures::future::join_all(all_paths)
 7464                .await
 7465                .into_iter()
 7466                .filter_map(|result| result.ok().flatten())
 7467                .collect::<Vec<_>>();
 7468
 7469            cx.update(|cx| {
 7470                for window in local_workspace_windows(cx) {
 7471                    if let Ok(workspace) = window.read(cx) {
 7472                        let m = workspace.project.read(cx).visibility_for_paths(
 7473                            &abs_paths,
 7474                            &all_metadatas,
 7475                            open_options.open_new_workspace == None,
 7476                            cx,
 7477                        );
 7478                        if m > best_match {
 7479                            existing = Some(window);
 7480                            best_match = m;
 7481                        } else if best_match.is_none()
 7482                            && open_options.open_new_workspace == Some(false)
 7483                        {
 7484                            existing = Some(window)
 7485                        }
 7486                    }
 7487                }
 7488            })?;
 7489
 7490            if open_options.open_new_workspace.is_none()
 7491                && (existing.is_none() || open_options.prefer_focused_window)
 7492                && all_metadatas.iter().all(|file| !file.is_dir)
 7493            {
 7494                cx.update(|cx| {
 7495                    if let Some(window) = cx
 7496                        .active_window()
 7497                        .and_then(|window| window.downcast::<Workspace>())
 7498                        && let Ok(workspace) = window.read(cx)
 7499                    {
 7500                        let project = workspace.project().read(cx);
 7501                        if project.is_local() && !project.is_via_collab() {
 7502                            existing = Some(window);
 7503                            open_visible = OpenVisible::None;
 7504                            return;
 7505                        }
 7506                    }
 7507                    for window in local_workspace_windows(cx) {
 7508                        if let Ok(workspace) = window.read(cx) {
 7509                            let project = workspace.project().read(cx);
 7510                            if project.is_via_collab() {
 7511                                continue;
 7512                            }
 7513                            existing = Some(window);
 7514                            open_visible = OpenVisible::None;
 7515                            break;
 7516                        }
 7517                    }
 7518                })?;
 7519            }
 7520        }
 7521
 7522        let result = if let Some(existing) = existing {
 7523            let open_task = existing
 7524                .update(cx, |workspace, window, cx| {
 7525                    window.activate_window();
 7526                    workspace.open_paths(
 7527                        abs_paths,
 7528                        OpenOptions {
 7529                            visible: Some(open_visible),
 7530                            ..Default::default()
 7531                        },
 7532                        None,
 7533                        window,
 7534                        cx,
 7535                    )
 7536                })?
 7537                .await;
 7538
 7539            _ = existing.update(cx, |workspace, _, cx| {
 7540                for item in open_task.iter().flatten() {
 7541                    if let Err(e) = item {
 7542                        workspace.show_error(&e, cx);
 7543                    }
 7544                }
 7545            });
 7546
 7547            Ok((existing, open_task))
 7548        } else {
 7549            cx.update(move |cx| {
 7550                Workspace::new_local(
 7551                    abs_paths,
 7552                    app_state.clone(),
 7553                    open_options.replace_window,
 7554                    open_options.env,
 7555                    cx,
 7556                )
 7557            })?
 7558            .await
 7559        };
 7560
 7561        #[cfg(target_os = "windows")]
 7562        if let Some(util::paths::WslPath{distro, path}) = wsl_path
 7563            && let Ok((workspace, _)) = &result
 7564        {
 7565            workspace
 7566                .update(cx, move |workspace, _window, cx| {
 7567                    struct OpenInWsl;
 7568                    workspace.show_notification(NotificationId::unique::<OpenInWsl>(), cx, move |cx| {
 7569                        let display_path = util::markdown::MarkdownInlineCode(&path.to_string_lossy());
 7570                        let msg = format!("{display_path} is inside a WSL filesystem, some features may not work unless you open it with WSL remote");
 7571                        cx.new(move |cx| {
 7572                            MessageNotification::new(msg, cx)
 7573                                .primary_message("Open in WSL")
 7574                                .primary_icon(IconName::FolderOpen)
 7575                                .primary_on_click(move |window, cx| {
 7576                                    window.dispatch_action(Box::new(remote::OpenWslPath {
 7577                                            distro: remote::WslConnectionOptions {
 7578                                                    distro_name: distro.clone(),
 7579                                                user: None,
 7580                                            },
 7581                                            paths: vec![path.clone().into()],
 7582                                        }), cx)
 7583                                })
 7584                        })
 7585                    });
 7586                })
 7587                .unwrap();
 7588        };
 7589        result
 7590    })
 7591}
 7592
 7593pub fn open_new(
 7594    open_options: OpenOptions,
 7595    app_state: Arc<AppState>,
 7596    cx: &mut App,
 7597    init: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + 'static + Send,
 7598) -> Task<anyhow::Result<()>> {
 7599    let task = Workspace::new_local(Vec::new(), app_state, None, open_options.env, cx);
 7600    cx.spawn(async move |cx| {
 7601        let (workspace, opened_paths) = task.await?;
 7602        workspace.update(cx, |workspace, window, cx| {
 7603            if opened_paths.is_empty() {
 7604                init(workspace, window, cx)
 7605            }
 7606        })?;
 7607        Ok(())
 7608    })
 7609}
 7610
 7611pub fn create_and_open_local_file(
 7612    path: &'static Path,
 7613    window: &mut Window,
 7614    cx: &mut Context<Workspace>,
 7615    default_content: impl 'static + Send + FnOnce() -> Rope,
 7616) -> Task<Result<Box<dyn ItemHandle>>> {
 7617    cx.spawn_in(window, async move |workspace, cx| {
 7618        let fs = workspace.read_with(cx, |workspace, _| workspace.app_state().fs.clone())?;
 7619        if !fs.is_file(path).await {
 7620            fs.create_file(path, Default::default()).await?;
 7621            fs.save(path, &default_content(), Default::default())
 7622                .await?;
 7623        }
 7624
 7625        let mut items = workspace
 7626            .update_in(cx, |workspace, window, cx| {
 7627                workspace.with_local_workspace(window, cx, |workspace, window, cx| {
 7628                    workspace.open_paths(
 7629                        vec![path.to_path_buf()],
 7630                        OpenOptions {
 7631                            visible: Some(OpenVisible::None),
 7632                            ..Default::default()
 7633                        },
 7634                        None,
 7635                        window,
 7636                        cx,
 7637                    )
 7638                })
 7639            })?
 7640            .await?
 7641            .await;
 7642
 7643        let item = items.pop().flatten();
 7644        item.with_context(|| format!("path {path:?} is not a file"))?
 7645    })
 7646}
 7647
 7648pub fn open_remote_project_with_new_connection(
 7649    window: WindowHandle<Workspace>,
 7650    remote_connection: Arc<dyn RemoteConnection>,
 7651    cancel_rx: oneshot::Receiver<()>,
 7652    delegate: Arc<dyn RemoteClientDelegate>,
 7653    app_state: Arc<AppState>,
 7654    paths: Vec<PathBuf>,
 7655    cx: &mut App,
 7656) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 7657    cx.spawn(async move |cx| {
 7658        let (workspace_id, serialized_workspace) =
 7659            serialize_remote_project(remote_connection.connection_options(), paths.clone(), cx)
 7660                .await?;
 7661
 7662        let session = match cx
 7663            .update(|cx| {
 7664                remote::RemoteClient::new(
 7665                    ConnectionIdentifier::Workspace(workspace_id.0),
 7666                    remote_connection,
 7667                    cancel_rx,
 7668                    delegate,
 7669                    cx,
 7670                )
 7671            })?
 7672            .await?
 7673        {
 7674            Some(result) => result,
 7675            None => return Ok(Vec::new()),
 7676        };
 7677
 7678        let project = cx.update(|cx| {
 7679            project::Project::remote(
 7680                session,
 7681                app_state.client.clone(),
 7682                app_state.node_runtime.clone(),
 7683                app_state.user_store.clone(),
 7684                app_state.languages.clone(),
 7685                app_state.fs.clone(),
 7686                cx,
 7687            )
 7688        })?;
 7689
 7690        open_remote_project_inner(
 7691            project,
 7692            paths,
 7693            workspace_id,
 7694            serialized_workspace,
 7695            app_state,
 7696            window,
 7697            cx,
 7698        )
 7699        .await
 7700    })
 7701}
 7702
 7703pub fn open_remote_project_with_existing_connection(
 7704    connection_options: RemoteConnectionOptions,
 7705    project: Entity<Project>,
 7706    paths: Vec<PathBuf>,
 7707    app_state: Arc<AppState>,
 7708    window: WindowHandle<Workspace>,
 7709    cx: &mut AsyncApp,
 7710) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 7711    cx.spawn(async move |cx| {
 7712        let (workspace_id, serialized_workspace) =
 7713            serialize_remote_project(connection_options.clone(), paths.clone(), cx).await?;
 7714
 7715        open_remote_project_inner(
 7716            project,
 7717            paths,
 7718            workspace_id,
 7719            serialized_workspace,
 7720            app_state,
 7721            window,
 7722            cx,
 7723        )
 7724        .await
 7725    })
 7726}
 7727
 7728async fn open_remote_project_inner(
 7729    project: Entity<Project>,
 7730    paths: Vec<PathBuf>,
 7731    workspace_id: WorkspaceId,
 7732    serialized_workspace: Option<SerializedWorkspace>,
 7733    app_state: Arc<AppState>,
 7734    window: WindowHandle<Workspace>,
 7735    cx: &mut AsyncApp,
 7736) -> Result<Vec<Option<Box<dyn ItemHandle>>>> {
 7737    let toolchains = DB.toolchains(workspace_id).await?;
 7738    for (toolchain, worktree_id, path) in toolchains {
 7739        project
 7740            .update(cx, |this, cx| {
 7741                this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 7742            })?
 7743            .await;
 7744    }
 7745    let mut project_paths_to_open = vec![];
 7746    let mut project_path_errors = vec![];
 7747
 7748    for path in paths {
 7749        let result = cx
 7750            .update(|cx| Workspace::project_path_for_path(project.clone(), &path, true, cx))?
 7751            .await;
 7752        match result {
 7753            Ok((_, project_path)) => {
 7754                project_paths_to_open.push((path.clone(), Some(project_path)));
 7755            }
 7756            Err(error) => {
 7757                project_path_errors.push(error);
 7758            }
 7759        };
 7760    }
 7761
 7762    if project_paths_to_open.is_empty() {
 7763        return Err(project_path_errors.pop().context("no paths given")?);
 7764    }
 7765
 7766    if let Some(detach_session_task) = window
 7767        .update(cx, |_workspace, window, cx| {
 7768            cx.spawn_in(window, async move |this, cx| {
 7769                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))
 7770            })
 7771        })
 7772        .ok()
 7773    {
 7774        detach_session_task.await.ok();
 7775    }
 7776
 7777    cx.update_window(window.into(), |_, window, cx| {
 7778        window.replace_root(cx, |window, cx| {
 7779            telemetry::event!("SSH Project Opened");
 7780
 7781            let mut workspace =
 7782                Workspace::new(Some(workspace_id), project, app_state.clone(), window, cx);
 7783            workspace.update_history(cx);
 7784
 7785            if let Some(ref serialized) = serialized_workspace {
 7786                workspace.centered_layout = serialized.centered_layout;
 7787            }
 7788
 7789            workspace
 7790        });
 7791    })?;
 7792
 7793    let items = window
 7794        .update(cx, |_, window, cx| {
 7795            window.activate_window();
 7796            open_items(serialized_workspace, project_paths_to_open, window, cx)
 7797        })?
 7798        .await?;
 7799
 7800    window.update(cx, |workspace, _, cx| {
 7801        for error in project_path_errors {
 7802            if error.error_code() == proto::ErrorCode::DevServerProjectPathDoesNotExist {
 7803                if let Some(path) = error.error_tag("path") {
 7804                    workspace.show_error(&anyhow!("'{path}' does not exist"), cx)
 7805                }
 7806            } else {
 7807                workspace.show_error(&error, cx)
 7808            }
 7809        }
 7810    })?;
 7811
 7812    Ok(items.into_iter().map(|item| item?.ok()).collect())
 7813}
 7814
 7815fn serialize_remote_project(
 7816    connection_options: RemoteConnectionOptions,
 7817    paths: Vec<PathBuf>,
 7818    cx: &AsyncApp,
 7819) -> Task<Result<(WorkspaceId, Option<SerializedWorkspace>)>> {
 7820    cx.background_spawn(async move {
 7821        let remote_connection_id = persistence::DB
 7822            .get_or_create_remote_connection(connection_options)
 7823            .await?;
 7824
 7825        let serialized_workspace =
 7826            persistence::DB.remote_workspace_for_roots(&paths, remote_connection_id);
 7827
 7828        let workspace_id = if let Some(workspace_id) =
 7829            serialized_workspace.as_ref().map(|workspace| workspace.id)
 7830        {
 7831            workspace_id
 7832        } else {
 7833            persistence::DB.next_id().await?
 7834        };
 7835
 7836        Ok((workspace_id, serialized_workspace))
 7837    })
 7838}
 7839
 7840pub fn join_in_room_project(
 7841    project_id: u64,
 7842    follow_user_id: u64,
 7843    app_state: Arc<AppState>,
 7844    cx: &mut App,
 7845) -> Task<Result<()>> {
 7846    let windows = cx.windows();
 7847    cx.spawn(async move |cx| {
 7848        let existing_workspace = windows.into_iter().find_map(|window_handle| {
 7849            window_handle
 7850                .downcast::<Workspace>()
 7851                .and_then(|window_handle| {
 7852                    window_handle
 7853                        .update(cx, |workspace, _window, cx| {
 7854                            if workspace.project().read(cx).remote_id() == Some(project_id) {
 7855                                Some(window_handle)
 7856                            } else {
 7857                                None
 7858                            }
 7859                        })
 7860                        .unwrap_or(None)
 7861                })
 7862        });
 7863
 7864        let workspace = if let Some(existing_workspace) = existing_workspace {
 7865            existing_workspace
 7866        } else {
 7867            let active_call = cx.update(|cx| ActiveCall::global(cx))?;
 7868            let room = active_call
 7869                .read_with(cx, |call, _| call.room().cloned())?
 7870                .context("not in a call")?;
 7871            let project = room
 7872                .update(cx, |room, cx| {
 7873                    room.join_project(
 7874                        project_id,
 7875                        app_state.languages.clone(),
 7876                        app_state.fs.clone(),
 7877                        cx,
 7878                    )
 7879                })?
 7880                .await?;
 7881
 7882            let window_bounds_override = window_bounds_env_override();
 7883            cx.update(|cx| {
 7884                let mut options = (app_state.build_window_options)(None, cx);
 7885                options.window_bounds = window_bounds_override.map(WindowBounds::Windowed);
 7886                cx.open_window(options, |window, cx| {
 7887                    cx.new(|cx| {
 7888                        Workspace::new(Default::default(), project, app_state.clone(), window, cx)
 7889                    })
 7890                })
 7891            })??
 7892        };
 7893
 7894        workspace.update(cx, |workspace, window, cx| {
 7895            cx.activate(true);
 7896            window.activate_window();
 7897
 7898            if let Some(room) = ActiveCall::global(cx).read(cx).room().cloned() {
 7899                let follow_peer_id = room
 7900                    .read(cx)
 7901                    .remote_participants()
 7902                    .iter()
 7903                    .find(|(_, participant)| participant.user.id == follow_user_id)
 7904                    .map(|(_, p)| p.peer_id)
 7905                    .or_else(|| {
 7906                        // If we couldn't follow the given user, follow the host instead.
 7907                        let collaborator = workspace
 7908                            .project()
 7909                            .read(cx)
 7910                            .collaborators()
 7911                            .values()
 7912                            .find(|collaborator| collaborator.is_host)?;
 7913                        Some(collaborator.peer_id)
 7914                    });
 7915
 7916                if let Some(follow_peer_id) = follow_peer_id {
 7917                    workspace.follow(follow_peer_id, window, cx);
 7918                }
 7919            }
 7920        })?;
 7921
 7922        anyhow::Ok(())
 7923    })
 7924}
 7925
 7926pub fn reload(cx: &mut App) {
 7927    let should_confirm = WorkspaceSettings::get_global(cx).confirm_quit;
 7928    let mut workspace_windows = cx
 7929        .windows()
 7930        .into_iter()
 7931        .filter_map(|window| window.downcast::<Workspace>())
 7932        .collect::<Vec<_>>();
 7933
 7934    // If multiple windows have unsaved changes, and need a save prompt,
 7935    // prompt in the active window before switching to a different window.
 7936    workspace_windows.sort_by_key(|window| window.is_active(cx) == Some(false));
 7937
 7938    let mut prompt = None;
 7939    if let (true, Some(window)) = (should_confirm, workspace_windows.first()) {
 7940        prompt = window
 7941            .update(cx, |_, window, cx| {
 7942                window.prompt(
 7943                    PromptLevel::Info,
 7944                    "Are you sure you want to restart?",
 7945                    None,
 7946                    &["Restart", "Cancel"],
 7947                    cx,
 7948                )
 7949            })
 7950            .ok();
 7951    }
 7952
 7953    cx.spawn(async move |cx| {
 7954        if let Some(prompt) = prompt {
 7955            let answer = prompt.await?;
 7956            if answer != 0 {
 7957                return Ok(());
 7958            }
 7959        }
 7960
 7961        // If the user cancels any save prompt, then keep the app open.
 7962        for window in workspace_windows {
 7963            if let Ok(should_close) = window.update(cx, |workspace, window, cx| {
 7964                workspace.prepare_to_close(CloseIntent::Quit, window, cx)
 7965            }) && !should_close.await?
 7966            {
 7967                return Ok(());
 7968            }
 7969        }
 7970        cx.update(|cx| cx.restart())
 7971    })
 7972    .detach_and_log_err(cx);
 7973}
 7974
 7975fn parse_pixel_position_env_var(value: &str) -> Option<Point<Pixels>> {
 7976    let mut parts = value.split(',');
 7977    let x: usize = parts.next()?.parse().ok()?;
 7978    let y: usize = parts.next()?.parse().ok()?;
 7979    Some(point(px(x as f32), px(y as f32)))
 7980}
 7981
 7982fn parse_pixel_size_env_var(value: &str) -> Option<Size<Pixels>> {
 7983    let mut parts = value.split(',');
 7984    let width: usize = parts.next()?.parse().ok()?;
 7985    let height: usize = parts.next()?.parse().ok()?;
 7986    Some(size(px(width as f32), px(height as f32)))
 7987}
 7988
 7989/// Add client-side decorations (rounded corners, shadows, resize handling) when appropriate.
 7990pub fn client_side_decorations(
 7991    element: impl IntoElement,
 7992    window: &mut Window,
 7993    cx: &mut App,
 7994) -> Stateful<Div> {
 7995    const BORDER_SIZE: Pixels = px(1.0);
 7996    let decorations = window.window_decorations();
 7997
 7998    match decorations {
 7999        Decorations::Client { .. } => window.set_client_inset(theme::CLIENT_SIDE_DECORATION_SHADOW),
 8000        Decorations::Server => window.set_client_inset(px(0.0)),
 8001    }
 8002
 8003    struct GlobalResizeEdge(ResizeEdge);
 8004    impl Global for GlobalResizeEdge {}
 8005
 8006    div()
 8007        .id("window-backdrop")
 8008        .bg(transparent_black())
 8009        .map(|div| match decorations {
 8010            Decorations::Server => div,
 8011            Decorations::Client { tiling, .. } => div
 8012                .when(!(tiling.top || tiling.right), |div| {
 8013                    div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8014                })
 8015                .when(!(tiling.top || tiling.left), |div| {
 8016                    div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8017                })
 8018                .when(!(tiling.bottom || tiling.right), |div| {
 8019                    div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8020                })
 8021                .when(!(tiling.bottom || tiling.left), |div| {
 8022                    div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8023                })
 8024                .when(!tiling.top, |div| {
 8025                    div.pt(theme::CLIENT_SIDE_DECORATION_SHADOW)
 8026                })
 8027                .when(!tiling.bottom, |div| {
 8028                    div.pb(theme::CLIENT_SIDE_DECORATION_SHADOW)
 8029                })
 8030                .when(!tiling.left, |div| {
 8031                    div.pl(theme::CLIENT_SIDE_DECORATION_SHADOW)
 8032                })
 8033                .when(!tiling.right, |div| {
 8034                    div.pr(theme::CLIENT_SIDE_DECORATION_SHADOW)
 8035                })
 8036                .on_mouse_move(move |e, window, cx| {
 8037                    let size = window.window_bounds().get_bounds().size;
 8038                    let pos = e.position;
 8039
 8040                    let new_edge =
 8041                        resize_edge(pos, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling);
 8042
 8043                    let edge = cx.try_global::<GlobalResizeEdge>();
 8044                    if new_edge != edge.map(|edge| edge.0) {
 8045                        window
 8046                            .window_handle()
 8047                            .update(cx, |workspace, _, cx| {
 8048                                cx.notify(workspace.entity_id());
 8049                            })
 8050                            .ok();
 8051                    }
 8052                })
 8053                .on_mouse_down(MouseButton::Left, move |e, window, _| {
 8054                    let size = window.window_bounds().get_bounds().size;
 8055                    let pos = e.position;
 8056
 8057                    let edge = match resize_edge(
 8058                        pos,
 8059                        theme::CLIENT_SIDE_DECORATION_SHADOW,
 8060                        size,
 8061                        tiling,
 8062                    ) {
 8063                        Some(value) => value,
 8064                        None => return,
 8065                    };
 8066
 8067                    window.start_window_resize(edge);
 8068                }),
 8069        })
 8070        .size_full()
 8071        .child(
 8072            div()
 8073                .cursor(CursorStyle::Arrow)
 8074                .map(|div| match decorations {
 8075                    Decorations::Server => div,
 8076                    Decorations::Client { tiling } => div
 8077                        .border_color(cx.theme().colors().border)
 8078                        .when(!(tiling.top || tiling.right), |div| {
 8079                            div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8080                        })
 8081                        .when(!(tiling.top || tiling.left), |div| {
 8082                            div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8083                        })
 8084                        .when(!(tiling.bottom || tiling.right), |div| {
 8085                            div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8086                        })
 8087                        .when(!(tiling.bottom || tiling.left), |div| {
 8088                            div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8089                        })
 8090                        .when(!tiling.top, |div| div.border_t(BORDER_SIZE))
 8091                        .when(!tiling.bottom, |div| div.border_b(BORDER_SIZE))
 8092                        .when(!tiling.left, |div| div.border_l(BORDER_SIZE))
 8093                        .when(!tiling.right, |div| div.border_r(BORDER_SIZE))
 8094                        .when(!tiling.is_tiled(), |div| {
 8095                            div.shadow(vec![gpui::BoxShadow {
 8096                                color: Hsla {
 8097                                    h: 0.,
 8098                                    s: 0.,
 8099                                    l: 0.,
 8100                                    a: 0.4,
 8101                                },
 8102                                blur_radius: theme::CLIENT_SIDE_DECORATION_SHADOW / 2.,
 8103                                spread_radius: px(0.),
 8104                                offset: point(px(0.0), px(0.0)),
 8105                            }])
 8106                        }),
 8107                })
 8108                .on_mouse_move(|_e, _, cx| {
 8109                    cx.stop_propagation();
 8110                })
 8111                .size_full()
 8112                .child(element),
 8113        )
 8114        .map(|div| match decorations {
 8115            Decorations::Server => div,
 8116            Decorations::Client { tiling, .. } => div.child(
 8117                canvas(
 8118                    |_bounds, window, _| {
 8119                        window.insert_hitbox(
 8120                            Bounds::new(
 8121                                point(px(0.0), px(0.0)),
 8122                                window.window_bounds().get_bounds().size,
 8123                            ),
 8124                            HitboxBehavior::Normal,
 8125                        )
 8126                    },
 8127                    move |_bounds, hitbox, window, cx| {
 8128                        let mouse = window.mouse_position();
 8129                        let size = window.window_bounds().get_bounds().size;
 8130                        let Some(edge) =
 8131                            resize_edge(mouse, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling)
 8132                        else {
 8133                            return;
 8134                        };
 8135                        cx.set_global(GlobalResizeEdge(edge));
 8136                        window.set_cursor_style(
 8137                            match edge {
 8138                                ResizeEdge::Top | ResizeEdge::Bottom => CursorStyle::ResizeUpDown,
 8139                                ResizeEdge::Left | ResizeEdge::Right => {
 8140                                    CursorStyle::ResizeLeftRight
 8141                                }
 8142                                ResizeEdge::TopLeft | ResizeEdge::BottomRight => {
 8143                                    CursorStyle::ResizeUpLeftDownRight
 8144                                }
 8145                                ResizeEdge::TopRight | ResizeEdge::BottomLeft => {
 8146                                    CursorStyle::ResizeUpRightDownLeft
 8147                                }
 8148                            },
 8149                            &hitbox,
 8150                        );
 8151                    },
 8152                )
 8153                .size_full()
 8154                .absolute(),
 8155            ),
 8156        })
 8157}
 8158
 8159fn resize_edge(
 8160    pos: Point<Pixels>,
 8161    shadow_size: Pixels,
 8162    window_size: Size<Pixels>,
 8163    tiling: Tiling,
 8164) -> Option<ResizeEdge> {
 8165    let bounds = Bounds::new(Point::default(), window_size).inset(shadow_size * 1.5);
 8166    if bounds.contains(&pos) {
 8167        return None;
 8168    }
 8169
 8170    let corner_size = size(shadow_size * 1.5, shadow_size * 1.5);
 8171    let top_left_bounds = Bounds::new(Point::new(px(0.), px(0.)), corner_size);
 8172    if !tiling.top && top_left_bounds.contains(&pos) {
 8173        return Some(ResizeEdge::TopLeft);
 8174    }
 8175
 8176    let top_right_bounds = Bounds::new(
 8177        Point::new(window_size.width - corner_size.width, px(0.)),
 8178        corner_size,
 8179    );
 8180    if !tiling.top && top_right_bounds.contains(&pos) {
 8181        return Some(ResizeEdge::TopRight);
 8182    }
 8183
 8184    let bottom_left_bounds = Bounds::new(
 8185        Point::new(px(0.), window_size.height - corner_size.height),
 8186        corner_size,
 8187    );
 8188    if !tiling.bottom && bottom_left_bounds.contains(&pos) {
 8189        return Some(ResizeEdge::BottomLeft);
 8190    }
 8191
 8192    let bottom_right_bounds = Bounds::new(
 8193        Point::new(
 8194            window_size.width - corner_size.width,
 8195            window_size.height - corner_size.height,
 8196        ),
 8197        corner_size,
 8198    );
 8199    if !tiling.bottom && bottom_right_bounds.contains(&pos) {
 8200        return Some(ResizeEdge::BottomRight);
 8201    }
 8202
 8203    if !tiling.top && pos.y < shadow_size {
 8204        Some(ResizeEdge::Top)
 8205    } else if !tiling.bottom && pos.y > window_size.height - shadow_size {
 8206        Some(ResizeEdge::Bottom)
 8207    } else if !tiling.left && pos.x < shadow_size {
 8208        Some(ResizeEdge::Left)
 8209    } else if !tiling.right && pos.x > window_size.width - shadow_size {
 8210        Some(ResizeEdge::Right)
 8211    } else {
 8212        None
 8213    }
 8214}
 8215
 8216fn join_pane_into_active(
 8217    active_pane: &Entity<Pane>,
 8218    pane: &Entity<Pane>,
 8219    window: &mut Window,
 8220    cx: &mut App,
 8221) {
 8222    if pane == active_pane {
 8223    } else if pane.read(cx).items_len() == 0 {
 8224        pane.update(cx, |_, cx| {
 8225            cx.emit(pane::Event::Remove {
 8226                focus_on_pane: None,
 8227            });
 8228        })
 8229    } else {
 8230        move_all_items(pane, active_pane, window, cx);
 8231    }
 8232}
 8233
 8234fn move_all_items(
 8235    from_pane: &Entity<Pane>,
 8236    to_pane: &Entity<Pane>,
 8237    window: &mut Window,
 8238    cx: &mut App,
 8239) {
 8240    let destination_is_different = from_pane != to_pane;
 8241    let mut moved_items = 0;
 8242    for (item_ix, item_handle) in from_pane
 8243        .read(cx)
 8244        .items()
 8245        .enumerate()
 8246        .map(|(ix, item)| (ix, item.clone()))
 8247        .collect::<Vec<_>>()
 8248    {
 8249        let ix = item_ix - moved_items;
 8250        if destination_is_different {
 8251            // Close item from previous pane
 8252            from_pane.update(cx, |source, cx| {
 8253                source.remove_item_and_focus_on_pane(ix, false, to_pane.clone(), window, cx);
 8254            });
 8255            moved_items += 1;
 8256        }
 8257
 8258        // This automatically removes duplicate items in the pane
 8259        to_pane.update(cx, |destination, cx| {
 8260            destination.add_item(item_handle, true, true, None, window, cx);
 8261            window.focus(&destination.focus_handle(cx))
 8262        });
 8263    }
 8264}
 8265
 8266pub fn move_item(
 8267    source: &Entity<Pane>,
 8268    destination: &Entity<Pane>,
 8269    item_id_to_move: EntityId,
 8270    destination_index: usize,
 8271    activate: bool,
 8272    window: &mut Window,
 8273    cx: &mut App,
 8274) {
 8275    let Some((item_ix, item_handle)) = source
 8276        .read(cx)
 8277        .items()
 8278        .enumerate()
 8279        .find(|(_, item_handle)| item_handle.item_id() == item_id_to_move)
 8280        .map(|(ix, item)| (ix, item.clone()))
 8281    else {
 8282        // Tab was closed during drag
 8283        return;
 8284    };
 8285
 8286    if source != destination {
 8287        // Close item from previous pane
 8288        source.update(cx, |source, cx| {
 8289            source.remove_item_and_focus_on_pane(item_ix, false, destination.clone(), window, cx);
 8290        });
 8291    }
 8292
 8293    // This automatically removes duplicate items in the pane
 8294    destination.update(cx, |destination, cx| {
 8295        destination.add_item_inner(
 8296            item_handle,
 8297            activate,
 8298            activate,
 8299            activate,
 8300            Some(destination_index),
 8301            window,
 8302            cx,
 8303        );
 8304        if activate {
 8305            window.focus(&destination.focus_handle(cx))
 8306        }
 8307    });
 8308}
 8309
 8310pub fn move_active_item(
 8311    source: &Entity<Pane>,
 8312    destination: &Entity<Pane>,
 8313    focus_destination: bool,
 8314    close_if_empty: bool,
 8315    window: &mut Window,
 8316    cx: &mut App,
 8317) {
 8318    if source == destination {
 8319        return;
 8320    }
 8321    let Some(active_item) = source.read(cx).active_item() else {
 8322        return;
 8323    };
 8324    source.update(cx, |source_pane, cx| {
 8325        let item_id = active_item.item_id();
 8326        source_pane.remove_item(item_id, false, close_if_empty, window, cx);
 8327        destination.update(cx, |target_pane, cx| {
 8328            target_pane.add_item(
 8329                active_item,
 8330                focus_destination,
 8331                focus_destination,
 8332                Some(target_pane.items_len()),
 8333                window,
 8334                cx,
 8335            );
 8336        });
 8337    });
 8338}
 8339
 8340pub fn clone_active_item(
 8341    workspace_id: Option<WorkspaceId>,
 8342    source: &Entity<Pane>,
 8343    destination: &Entity<Pane>,
 8344    focus_destination: bool,
 8345    window: &mut Window,
 8346    cx: &mut App,
 8347) {
 8348    if source == destination {
 8349        return;
 8350    }
 8351    let Some(active_item) = source.read(cx).active_item() else {
 8352        return;
 8353    };
 8354    if !active_item.can_split(cx) {
 8355        return;
 8356    }
 8357    let destination = destination.downgrade();
 8358    let task = active_item.clone_on_split(workspace_id, window, cx);
 8359    window
 8360        .spawn(cx, async move |cx| {
 8361            let Some(clone) = task.await else {
 8362                return;
 8363            };
 8364            destination
 8365                .update_in(cx, |target_pane, window, cx| {
 8366                    target_pane.add_item(
 8367                        clone,
 8368                        focus_destination,
 8369                        focus_destination,
 8370                        Some(target_pane.items_len()),
 8371                        window,
 8372                        cx,
 8373                    );
 8374                })
 8375                .log_err();
 8376        })
 8377        .detach();
 8378}
 8379
 8380#[derive(Debug)]
 8381pub struct WorkspacePosition {
 8382    pub window_bounds: Option<WindowBounds>,
 8383    pub display: Option<Uuid>,
 8384    pub centered_layout: bool,
 8385}
 8386
 8387pub fn remote_workspace_position_from_db(
 8388    connection_options: RemoteConnectionOptions,
 8389    paths_to_open: &[PathBuf],
 8390    cx: &App,
 8391) -> Task<Result<WorkspacePosition>> {
 8392    let paths = paths_to_open.to_vec();
 8393
 8394    cx.background_spawn(async move {
 8395        let remote_connection_id = persistence::DB
 8396            .get_or_create_remote_connection(connection_options)
 8397            .await
 8398            .context("fetching serialized ssh project")?;
 8399        let serialized_workspace =
 8400            persistence::DB.remote_workspace_for_roots(&paths, remote_connection_id);
 8401
 8402        let (window_bounds, display) = if let Some(bounds) = window_bounds_env_override() {
 8403            (Some(WindowBounds::Windowed(bounds)), None)
 8404        } else {
 8405            let restorable_bounds = serialized_workspace
 8406                .as_ref()
 8407                .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 8408                .or_else(|| {
 8409                    let (display, window_bounds) = DB.last_window().log_err()?;
 8410                    Some((display?, window_bounds?))
 8411                });
 8412
 8413            if let Some((serialized_display, serialized_status)) = restorable_bounds {
 8414                (Some(serialized_status.0), Some(serialized_display))
 8415            } else {
 8416                (None, None)
 8417            }
 8418        };
 8419
 8420        let centered_layout = serialized_workspace
 8421            .as_ref()
 8422            .map(|w| w.centered_layout)
 8423            .unwrap_or(false);
 8424
 8425        Ok(WorkspacePosition {
 8426            window_bounds,
 8427            display,
 8428            centered_layout,
 8429        })
 8430    })
 8431}
 8432
 8433pub fn with_active_or_new_workspace(
 8434    cx: &mut App,
 8435    f: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send + 'static,
 8436) {
 8437    match cx.active_window().and_then(|w| w.downcast::<Workspace>()) {
 8438        Some(workspace) => {
 8439            cx.defer(move |cx| {
 8440                workspace
 8441                    .update(cx, |workspace, window, cx| f(workspace, window, cx))
 8442                    .log_err();
 8443            });
 8444        }
 8445        None => {
 8446            let app_state = AppState::global(cx);
 8447            if let Some(app_state) = app_state.upgrade() {
 8448                open_new(
 8449                    OpenOptions::default(),
 8450                    app_state,
 8451                    cx,
 8452                    move |workspace, window, cx| f(workspace, window, cx),
 8453                )
 8454                .detach_and_log_err(cx);
 8455            }
 8456        }
 8457    }
 8458}
 8459
 8460#[cfg(test)]
 8461mod tests {
 8462    use std::{cell::RefCell, rc::Rc};
 8463
 8464    use super::*;
 8465    use crate::{
 8466        dock::{PanelEvent, test::TestPanel},
 8467        item::{
 8468            ItemBufferKind, ItemEvent,
 8469            test::{TestItem, TestProjectItem},
 8470        },
 8471    };
 8472    use fs::FakeFs;
 8473    use gpui::{
 8474        DismissEvent, Empty, EventEmitter, FocusHandle, Focusable, Render, TestAppContext,
 8475        UpdateGlobal, VisualTestContext, px,
 8476    };
 8477    use project::{Project, ProjectEntryId};
 8478    use serde_json::json;
 8479    use settings::SettingsStore;
 8480    use util::rel_path::rel_path;
 8481
 8482    #[gpui::test]
 8483    async fn test_tab_disambiguation(cx: &mut TestAppContext) {
 8484        init_test(cx);
 8485
 8486        let fs = FakeFs::new(cx.executor());
 8487        let project = Project::test(fs, [], cx).await;
 8488        let (workspace, cx) =
 8489            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8490
 8491        // Adding an item with no ambiguity renders the tab without detail.
 8492        let item1 = cx.new(|cx| {
 8493            let mut item = TestItem::new(cx);
 8494            item.tab_descriptions = Some(vec!["c", "b1/c", "a/b1/c"]);
 8495            item
 8496        });
 8497        workspace.update_in(cx, |workspace, window, cx| {
 8498            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8499        });
 8500        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(0)));
 8501
 8502        // Adding an item that creates ambiguity increases the level of detail on
 8503        // both tabs.
 8504        let item2 = cx.new_window_entity(|_window, cx| {
 8505            let mut item = TestItem::new(cx);
 8506            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8507            item
 8508        });
 8509        workspace.update_in(cx, |workspace, window, cx| {
 8510            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8511        });
 8512        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8513        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8514
 8515        // Adding an item that creates ambiguity increases the level of detail only
 8516        // on the ambiguous tabs. In this case, the ambiguity can't be resolved so
 8517        // we stop at the highest detail available.
 8518        let item3 = cx.new(|cx| {
 8519            let mut item = TestItem::new(cx);
 8520            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8521            item
 8522        });
 8523        workspace.update_in(cx, |workspace, window, cx| {
 8524            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8525        });
 8526        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8527        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8528        item3.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8529    }
 8530
 8531    #[gpui::test]
 8532    async fn test_tracking_active_path(cx: &mut TestAppContext) {
 8533        init_test(cx);
 8534
 8535        let fs = FakeFs::new(cx.executor());
 8536        fs.insert_tree(
 8537            "/root1",
 8538            json!({
 8539                "one.txt": "",
 8540                "two.txt": "",
 8541            }),
 8542        )
 8543        .await;
 8544        fs.insert_tree(
 8545            "/root2",
 8546            json!({
 8547                "three.txt": "",
 8548            }),
 8549        )
 8550        .await;
 8551
 8552        let project = Project::test(fs, ["root1".as_ref()], cx).await;
 8553        let (workspace, cx) =
 8554            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8555        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8556        let worktree_id = project.update(cx, |project, cx| {
 8557            project.worktrees(cx).next().unwrap().read(cx).id()
 8558        });
 8559
 8560        let item1 = cx.new(|cx| {
 8561            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
 8562        });
 8563        let item2 = cx.new(|cx| {
 8564            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "two.txt", cx)])
 8565        });
 8566
 8567        // Add an item to an empty pane
 8568        workspace.update_in(cx, |workspace, window, cx| {
 8569            workspace.add_item_to_active_pane(Box::new(item1), None, true, window, cx)
 8570        });
 8571        project.update(cx, |project, cx| {
 8572            assert_eq!(
 8573                project.active_entry(),
 8574                project
 8575                    .entry_for_path(&(worktree_id, rel_path("one.txt")).into(), cx)
 8576                    .map(|e| e.id)
 8577            );
 8578        });
 8579        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8580
 8581        // Add a second item to a non-empty pane
 8582        workspace.update_in(cx, |workspace, window, cx| {
 8583            workspace.add_item_to_active_pane(Box::new(item2), None, true, window, cx)
 8584        });
 8585        assert_eq!(cx.window_title().as_deref(), Some("root1 — two.txt"));
 8586        project.update(cx, |project, cx| {
 8587            assert_eq!(
 8588                project.active_entry(),
 8589                project
 8590                    .entry_for_path(&(worktree_id, rel_path("two.txt")).into(), cx)
 8591                    .map(|e| e.id)
 8592            );
 8593        });
 8594
 8595        // Close the active item
 8596        pane.update_in(cx, |pane, window, cx| {
 8597            pane.close_active_item(&Default::default(), window, cx)
 8598        })
 8599        .await
 8600        .unwrap();
 8601        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8602        project.update(cx, |project, cx| {
 8603            assert_eq!(
 8604                project.active_entry(),
 8605                project
 8606                    .entry_for_path(&(worktree_id, rel_path("one.txt")).into(), cx)
 8607                    .map(|e| e.id)
 8608            );
 8609        });
 8610
 8611        // Add a project folder
 8612        project
 8613            .update(cx, |project, cx| {
 8614                project.find_or_create_worktree("root2", true, cx)
 8615            })
 8616            .await
 8617            .unwrap();
 8618        assert_eq!(cx.window_title().as_deref(), Some("root1, root2 — one.txt"));
 8619
 8620        // Remove a project folder
 8621        project.update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
 8622        assert_eq!(cx.window_title().as_deref(), Some("root2 — one.txt"));
 8623    }
 8624
 8625    #[gpui::test]
 8626    async fn test_close_window(cx: &mut TestAppContext) {
 8627        init_test(cx);
 8628
 8629        let fs = FakeFs::new(cx.executor());
 8630        fs.insert_tree("/root", json!({ "one": "" })).await;
 8631
 8632        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8633        let (workspace, cx) =
 8634            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8635
 8636        // When there are no dirty items, there's nothing to do.
 8637        let item1 = cx.new(TestItem::new);
 8638        workspace.update_in(cx, |w, window, cx| {
 8639            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx)
 8640        });
 8641        let task = workspace.update_in(cx, |w, window, cx| {
 8642            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8643        });
 8644        assert!(task.await.unwrap());
 8645
 8646        // When there are dirty untitled items, prompt to save each one. If the user
 8647        // cancels any prompt, then abort.
 8648        let item2 = cx.new(|cx| TestItem::new(cx).with_dirty(true));
 8649        let item3 = cx.new(|cx| {
 8650            TestItem::new(cx)
 8651                .with_dirty(true)
 8652                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8653        });
 8654        workspace.update_in(cx, |w, window, cx| {
 8655            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8656            w.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8657        });
 8658        let task = workspace.update_in(cx, |w, window, cx| {
 8659            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8660        });
 8661        cx.executor().run_until_parked();
 8662        cx.simulate_prompt_answer("Cancel"); // cancel save all
 8663        cx.executor().run_until_parked();
 8664        assert!(!cx.has_pending_prompt());
 8665        assert!(!task.await.unwrap());
 8666    }
 8667
 8668    #[gpui::test]
 8669    async fn test_close_window_with_serializable_items(cx: &mut TestAppContext) {
 8670        init_test(cx);
 8671
 8672        // Register TestItem as a serializable item
 8673        cx.update(|cx| {
 8674            register_serializable_item::<TestItem>(cx);
 8675        });
 8676
 8677        let fs = FakeFs::new(cx.executor());
 8678        fs.insert_tree("/root", json!({ "one": "" })).await;
 8679
 8680        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8681        let (workspace, cx) =
 8682            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8683
 8684        // When there are dirty untitled items, but they can serialize, then there is no prompt.
 8685        let item1 = cx.new(|cx| {
 8686            TestItem::new(cx)
 8687                .with_dirty(true)
 8688                .with_serialize(|| Some(Task::ready(Ok(()))))
 8689        });
 8690        let item2 = cx.new(|cx| {
 8691            TestItem::new(cx)
 8692                .with_dirty(true)
 8693                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8694                .with_serialize(|| Some(Task::ready(Ok(()))))
 8695        });
 8696        workspace.update_in(cx, |w, window, cx| {
 8697            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8698            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8699        });
 8700        let task = workspace.update_in(cx, |w, window, cx| {
 8701            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8702        });
 8703        assert!(task.await.unwrap());
 8704    }
 8705
 8706    #[gpui::test]
 8707    async fn test_close_pane_items(cx: &mut TestAppContext) {
 8708        init_test(cx);
 8709
 8710        let fs = FakeFs::new(cx.executor());
 8711
 8712        let project = Project::test(fs, None, cx).await;
 8713        let (workspace, cx) =
 8714            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8715
 8716        let item1 = cx.new(|cx| {
 8717            TestItem::new(cx)
 8718                .with_dirty(true)
 8719                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 8720        });
 8721        let item2 = cx.new(|cx| {
 8722            TestItem::new(cx)
 8723                .with_dirty(true)
 8724                .with_conflict(true)
 8725                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 8726        });
 8727        let item3 = cx.new(|cx| {
 8728            TestItem::new(cx)
 8729                .with_dirty(true)
 8730                .with_conflict(true)
 8731                .with_project_items(&[dirty_project_item(3, "3.txt", cx)])
 8732        });
 8733        let item4 = cx.new(|cx| {
 8734            TestItem::new(cx).with_dirty(true).with_project_items(&[{
 8735                let project_item = TestProjectItem::new_untitled(cx);
 8736                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8737                project_item
 8738            }])
 8739        });
 8740        let pane = workspace.update_in(cx, |workspace, window, cx| {
 8741            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8742            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8743            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8744            workspace.add_item_to_active_pane(Box::new(item4.clone()), None, true, window, cx);
 8745            workspace.active_pane().clone()
 8746        });
 8747
 8748        let close_items = pane.update_in(cx, |pane, window, cx| {
 8749            pane.activate_item(1, true, true, window, cx);
 8750            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8751            let item1_id = item1.item_id();
 8752            let item3_id = item3.item_id();
 8753            let item4_id = item4.item_id();
 8754            pane.close_items(window, cx, SaveIntent::Close, move |id| {
 8755                [item1_id, item3_id, item4_id].contains(&id)
 8756            })
 8757        });
 8758        cx.executor().run_until_parked();
 8759
 8760        assert!(cx.has_pending_prompt());
 8761        cx.simulate_prompt_answer("Save all");
 8762
 8763        cx.executor().run_until_parked();
 8764
 8765        // Item 1 is saved. There's a prompt to save item 3.
 8766        pane.update(cx, |pane, cx| {
 8767            assert_eq!(item1.read(cx).save_count, 1);
 8768            assert_eq!(item1.read(cx).save_as_count, 0);
 8769            assert_eq!(item1.read(cx).reload_count, 0);
 8770            assert_eq!(pane.items_len(), 3);
 8771            assert_eq!(pane.active_item().unwrap().item_id(), item3.item_id());
 8772        });
 8773        assert!(cx.has_pending_prompt());
 8774
 8775        // Cancel saving item 3.
 8776        cx.simulate_prompt_answer("Discard");
 8777        cx.executor().run_until_parked();
 8778
 8779        // Item 3 is reloaded. There's a prompt to save item 4.
 8780        pane.update(cx, |pane, cx| {
 8781            assert_eq!(item3.read(cx).save_count, 0);
 8782            assert_eq!(item3.read(cx).save_as_count, 0);
 8783            assert_eq!(item3.read(cx).reload_count, 1);
 8784            assert_eq!(pane.items_len(), 2);
 8785            assert_eq!(pane.active_item().unwrap().item_id(), item4.item_id());
 8786        });
 8787
 8788        // There's a prompt for a path for item 4.
 8789        cx.simulate_new_path_selection(|_| Some(Default::default()));
 8790        close_items.await.unwrap();
 8791
 8792        // The requested items are closed.
 8793        pane.update(cx, |pane, cx| {
 8794            assert_eq!(item4.read(cx).save_count, 0);
 8795            assert_eq!(item4.read(cx).save_as_count, 1);
 8796            assert_eq!(item4.read(cx).reload_count, 0);
 8797            assert_eq!(pane.items_len(), 1);
 8798            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8799        });
 8800    }
 8801
 8802    #[gpui::test]
 8803    async fn test_prompting_to_save_only_on_last_item_for_entry(cx: &mut TestAppContext) {
 8804        init_test(cx);
 8805
 8806        let fs = FakeFs::new(cx.executor());
 8807        let project = Project::test(fs, [], cx).await;
 8808        let (workspace, cx) =
 8809            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8810
 8811        // Create several workspace items with single project entries, and two
 8812        // workspace items with multiple project entries.
 8813        let single_entry_items = (0..=4)
 8814            .map(|project_entry_id| {
 8815                cx.new(|cx| {
 8816                    TestItem::new(cx)
 8817                        .with_dirty(true)
 8818                        .with_project_items(&[dirty_project_item(
 8819                            project_entry_id,
 8820                            &format!("{project_entry_id}.txt"),
 8821                            cx,
 8822                        )])
 8823                })
 8824            })
 8825            .collect::<Vec<_>>();
 8826        let item_2_3 = cx.new(|cx| {
 8827            TestItem::new(cx)
 8828                .with_dirty(true)
 8829                .with_buffer_kind(ItemBufferKind::Multibuffer)
 8830                .with_project_items(&[
 8831                    single_entry_items[2].read(cx).project_items[0].clone(),
 8832                    single_entry_items[3].read(cx).project_items[0].clone(),
 8833                ])
 8834        });
 8835        let item_3_4 = cx.new(|cx| {
 8836            TestItem::new(cx)
 8837                .with_dirty(true)
 8838                .with_buffer_kind(ItemBufferKind::Multibuffer)
 8839                .with_project_items(&[
 8840                    single_entry_items[3].read(cx).project_items[0].clone(),
 8841                    single_entry_items[4].read(cx).project_items[0].clone(),
 8842                ])
 8843        });
 8844
 8845        // Create two panes that contain the following project entries:
 8846        //   left pane:
 8847        //     multi-entry items:   (2, 3)
 8848        //     single-entry items:  0, 2, 3, 4
 8849        //   right pane:
 8850        //     single-entry items:  4, 1
 8851        //     multi-entry items:   (3, 4)
 8852        let (left_pane, right_pane) = workspace.update_in(cx, |workspace, window, cx| {
 8853            let left_pane = workspace.active_pane().clone();
 8854            workspace.add_item_to_active_pane(Box::new(item_2_3.clone()), None, true, window, cx);
 8855            workspace.add_item_to_active_pane(
 8856                single_entry_items[0].boxed_clone(),
 8857                None,
 8858                true,
 8859                window,
 8860                cx,
 8861            );
 8862            workspace.add_item_to_active_pane(
 8863                single_entry_items[2].boxed_clone(),
 8864                None,
 8865                true,
 8866                window,
 8867                cx,
 8868            );
 8869            workspace.add_item_to_active_pane(
 8870                single_entry_items[3].boxed_clone(),
 8871                None,
 8872                true,
 8873                window,
 8874                cx,
 8875            );
 8876            workspace.add_item_to_active_pane(
 8877                single_entry_items[4].boxed_clone(),
 8878                None,
 8879                true,
 8880                window,
 8881                cx,
 8882            );
 8883
 8884            let right_pane =
 8885                workspace.split_and_clone(left_pane.clone(), SplitDirection::Right, window, cx);
 8886
 8887            let boxed_clone = single_entry_items[1].boxed_clone();
 8888            let right_pane = window.spawn(cx, async move |cx| {
 8889                right_pane.await.inspect(|right_pane| {
 8890                    right_pane
 8891                        .update_in(cx, |pane, window, cx| {
 8892                            pane.add_item(boxed_clone, true, true, None, window, cx);
 8893                            pane.add_item(Box::new(item_3_4.clone()), true, true, None, window, cx);
 8894                        })
 8895                        .unwrap();
 8896                })
 8897            });
 8898
 8899            (left_pane, right_pane)
 8900        });
 8901        let right_pane = right_pane.await.unwrap();
 8902        cx.focus(&right_pane);
 8903
 8904        let mut close = right_pane.update_in(cx, |pane, window, cx| {
 8905            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8906                .unwrap()
 8907        });
 8908        cx.executor().run_until_parked();
 8909
 8910        let msg = cx.pending_prompt().unwrap().0;
 8911        assert!(msg.contains("1.txt"));
 8912        assert!(!msg.contains("2.txt"));
 8913        assert!(!msg.contains("3.txt"));
 8914        assert!(!msg.contains("4.txt"));
 8915
 8916        cx.simulate_prompt_answer("Cancel");
 8917        close.await;
 8918
 8919        left_pane
 8920            .update_in(cx, |left_pane, window, cx| {
 8921                left_pane.close_item_by_id(
 8922                    single_entry_items[3].entity_id(),
 8923                    SaveIntent::Skip,
 8924                    window,
 8925                    cx,
 8926                )
 8927            })
 8928            .await
 8929            .unwrap();
 8930
 8931        close = right_pane.update_in(cx, |pane, window, cx| {
 8932            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8933                .unwrap()
 8934        });
 8935        cx.executor().run_until_parked();
 8936
 8937        let details = cx.pending_prompt().unwrap().1;
 8938        assert!(details.contains("1.txt"));
 8939        assert!(!details.contains("2.txt"));
 8940        assert!(details.contains("3.txt"));
 8941        // ideally this assertion could be made, but today we can only
 8942        // save whole items not project items, so the orphaned item 3 causes
 8943        // 4 to be saved too.
 8944        // assert!(!details.contains("4.txt"));
 8945
 8946        cx.simulate_prompt_answer("Save all");
 8947
 8948        cx.executor().run_until_parked();
 8949        close.await;
 8950        right_pane.read_with(cx, |pane, _| {
 8951            assert_eq!(pane.items_len(), 0);
 8952        });
 8953    }
 8954
 8955    #[gpui::test]
 8956    async fn test_autosave(cx: &mut gpui::TestAppContext) {
 8957        init_test(cx);
 8958
 8959        let fs = FakeFs::new(cx.executor());
 8960        let project = Project::test(fs, [], cx).await;
 8961        let (workspace, cx) =
 8962            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8963        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8964
 8965        let item = cx.new(|cx| {
 8966            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8967        });
 8968        let item_id = item.entity_id();
 8969        workspace.update_in(cx, |workspace, window, cx| {
 8970            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8971        });
 8972
 8973        // Autosave on window change.
 8974        item.update(cx, |item, cx| {
 8975            SettingsStore::update_global(cx, |settings, cx| {
 8976                settings.update_user_settings(cx, |settings| {
 8977                    settings.workspace.autosave = Some(AutosaveSetting::OnWindowChange);
 8978                })
 8979            });
 8980            item.is_dirty = true;
 8981        });
 8982
 8983        // Deactivating the window saves the file.
 8984        cx.deactivate_window();
 8985        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8986
 8987        // Re-activating the window doesn't save the file.
 8988        cx.update(|window, _| window.activate_window());
 8989        cx.executor().run_until_parked();
 8990        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8991
 8992        // Autosave on focus change.
 8993        item.update_in(cx, |item, window, cx| {
 8994            cx.focus_self(window);
 8995            SettingsStore::update_global(cx, |settings, cx| {
 8996                settings.update_user_settings(cx, |settings| {
 8997                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
 8998                })
 8999            });
 9000            item.is_dirty = true;
 9001        });
 9002        // Blurring the item saves the file.
 9003        item.update_in(cx, |_, window, _| window.blur());
 9004        cx.executor().run_until_parked();
 9005        item.read_with(cx, |item, _| assert_eq!(item.save_count, 2));
 9006
 9007        // Deactivating the window still saves the file.
 9008        item.update_in(cx, |item, window, cx| {
 9009            cx.focus_self(window);
 9010            item.is_dirty = true;
 9011        });
 9012        cx.deactivate_window();
 9013        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
 9014
 9015        // Autosave after delay.
 9016        item.update(cx, |item, cx| {
 9017            SettingsStore::update_global(cx, |settings, cx| {
 9018                settings.update_user_settings(cx, |settings| {
 9019                    settings.workspace.autosave = Some(AutosaveSetting::AfterDelay {
 9020                        milliseconds: 500.into(),
 9021                    });
 9022                })
 9023            });
 9024            item.is_dirty = true;
 9025            cx.emit(ItemEvent::Edit);
 9026        });
 9027
 9028        // Delay hasn't fully expired, so the file is still dirty and unsaved.
 9029        cx.executor().advance_clock(Duration::from_millis(250));
 9030        item.read_with(cx, |item, _| assert_eq!(item.save_count, 3));
 9031
 9032        // After delay expires, the file is saved.
 9033        cx.executor().advance_clock(Duration::from_millis(250));
 9034        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
 9035
 9036        // Autosave after delay, should save earlier than delay if tab is closed
 9037        item.update(cx, |item, cx| {
 9038            item.is_dirty = true;
 9039            cx.emit(ItemEvent::Edit);
 9040        });
 9041        cx.executor().advance_clock(Duration::from_millis(250));
 9042        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
 9043
 9044        // // Ensure auto save with delay saves the item on close, even if the timer hasn't yet run out.
 9045        pane.update_in(cx, |pane, window, cx| {
 9046            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 9047        })
 9048        .await
 9049        .unwrap();
 9050        assert!(!cx.has_pending_prompt());
 9051        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 9052
 9053        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
 9054        workspace.update_in(cx, |workspace, window, cx| {
 9055            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 9056        });
 9057        item.update_in(cx, |item, _window, cx| {
 9058            item.is_dirty = true;
 9059            for project_item in &mut item.project_items {
 9060                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 9061            }
 9062        });
 9063        cx.run_until_parked();
 9064        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 9065
 9066        // Autosave on focus change, ensuring closing the tab counts as such.
 9067        item.update(cx, |item, cx| {
 9068            SettingsStore::update_global(cx, |settings, cx| {
 9069                settings.update_user_settings(cx, |settings| {
 9070                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
 9071                })
 9072            });
 9073            item.is_dirty = true;
 9074            for project_item in &mut item.project_items {
 9075                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 9076            }
 9077        });
 9078
 9079        pane.update_in(cx, |pane, window, cx| {
 9080            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 9081        })
 9082        .await
 9083        .unwrap();
 9084        assert!(!cx.has_pending_prompt());
 9085        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
 9086
 9087        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
 9088        workspace.update_in(cx, |workspace, window, cx| {
 9089            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 9090        });
 9091        item.update_in(cx, |item, window, cx| {
 9092            item.project_items[0].update(cx, |item, _| {
 9093                item.entry_id = None;
 9094            });
 9095            item.is_dirty = true;
 9096            window.blur();
 9097        });
 9098        cx.run_until_parked();
 9099        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
 9100
 9101        // Ensure autosave is prevented for deleted files also when closing the buffer.
 9102        let _close_items = pane.update_in(cx, |pane, window, cx| {
 9103            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 9104        });
 9105        cx.run_until_parked();
 9106        assert!(cx.has_pending_prompt());
 9107        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
 9108    }
 9109
 9110    #[gpui::test]
 9111    async fn test_pane_navigation(cx: &mut gpui::TestAppContext) {
 9112        init_test(cx);
 9113
 9114        let fs = FakeFs::new(cx.executor());
 9115
 9116        let project = Project::test(fs, [], cx).await;
 9117        let (workspace, cx) =
 9118            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9119
 9120        let item = cx.new(|cx| {
 9121            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 9122        });
 9123        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9124        let toolbar = pane.read_with(cx, |pane, _| pane.toolbar().clone());
 9125        let toolbar_notify_count = Rc::new(RefCell::new(0));
 9126
 9127        workspace.update_in(cx, |workspace, window, cx| {
 9128            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 9129            let toolbar_notification_count = toolbar_notify_count.clone();
 9130            cx.observe_in(&toolbar, window, move |_, _, _, _| {
 9131                *toolbar_notification_count.borrow_mut() += 1
 9132            })
 9133            .detach();
 9134        });
 9135
 9136        pane.read_with(cx, |pane, _| {
 9137            assert!(!pane.can_navigate_backward());
 9138            assert!(!pane.can_navigate_forward());
 9139        });
 9140
 9141        item.update_in(cx, |item, _, cx| {
 9142            item.set_state("one".to_string(), cx);
 9143        });
 9144
 9145        // Toolbar must be notified to re-render the navigation buttons
 9146        assert_eq!(*toolbar_notify_count.borrow(), 1);
 9147
 9148        pane.read_with(cx, |pane, _| {
 9149            assert!(pane.can_navigate_backward());
 9150            assert!(!pane.can_navigate_forward());
 9151        });
 9152
 9153        workspace
 9154            .update_in(cx, |workspace, window, cx| {
 9155                workspace.go_back(pane.downgrade(), window, cx)
 9156            })
 9157            .await
 9158            .unwrap();
 9159
 9160        assert_eq!(*toolbar_notify_count.borrow(), 2);
 9161        pane.read_with(cx, |pane, _| {
 9162            assert!(!pane.can_navigate_backward());
 9163            assert!(pane.can_navigate_forward());
 9164        });
 9165    }
 9166
 9167    #[gpui::test]
 9168    async fn test_toggle_docks_and_panels(cx: &mut gpui::TestAppContext) {
 9169        init_test(cx);
 9170        let fs = FakeFs::new(cx.executor());
 9171
 9172        let project = Project::test(fs, [], cx).await;
 9173        let (workspace, cx) =
 9174            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9175
 9176        let panel = workspace.update_in(cx, |workspace, window, cx| {
 9177            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 9178            workspace.add_panel(panel.clone(), window, cx);
 9179
 9180            workspace
 9181                .right_dock()
 9182                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
 9183
 9184            panel
 9185        });
 9186
 9187        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9188        pane.update_in(cx, |pane, window, cx| {
 9189            let item = cx.new(TestItem::new);
 9190            pane.add_item(Box::new(item), true, true, None, window, cx);
 9191        });
 9192
 9193        // Transfer focus from center to panel
 9194        workspace.update_in(cx, |workspace, window, cx| {
 9195            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 9196        });
 9197
 9198        workspace.update_in(cx, |workspace, window, cx| {
 9199            assert!(workspace.right_dock().read(cx).is_open());
 9200            assert!(!panel.is_zoomed(window, cx));
 9201            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9202        });
 9203
 9204        // Transfer focus from panel to center
 9205        workspace.update_in(cx, |workspace, window, cx| {
 9206            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 9207        });
 9208
 9209        workspace.update_in(cx, |workspace, window, cx| {
 9210            assert!(workspace.right_dock().read(cx).is_open());
 9211            assert!(!panel.is_zoomed(window, cx));
 9212            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9213        });
 9214
 9215        // Close the dock
 9216        workspace.update_in(cx, |workspace, window, cx| {
 9217            workspace.toggle_dock(DockPosition::Right, window, cx);
 9218        });
 9219
 9220        workspace.update_in(cx, |workspace, window, cx| {
 9221            assert!(!workspace.right_dock().read(cx).is_open());
 9222            assert!(!panel.is_zoomed(window, cx));
 9223            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9224        });
 9225
 9226        // Open the dock
 9227        workspace.update_in(cx, |workspace, window, cx| {
 9228            workspace.toggle_dock(DockPosition::Right, window, cx);
 9229        });
 9230
 9231        workspace.update_in(cx, |workspace, window, cx| {
 9232            assert!(workspace.right_dock().read(cx).is_open());
 9233            assert!(!panel.is_zoomed(window, cx));
 9234            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9235        });
 9236
 9237        // Focus and zoom panel
 9238        panel.update_in(cx, |panel, window, cx| {
 9239            cx.focus_self(window);
 9240            panel.set_zoomed(true, window, cx)
 9241        });
 9242
 9243        workspace.update_in(cx, |workspace, window, cx| {
 9244            assert!(workspace.right_dock().read(cx).is_open());
 9245            assert!(panel.is_zoomed(window, cx));
 9246            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9247        });
 9248
 9249        // Transfer focus to the center closes the dock
 9250        workspace.update_in(cx, |workspace, window, cx| {
 9251            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 9252        });
 9253
 9254        workspace.update_in(cx, |workspace, window, cx| {
 9255            assert!(!workspace.right_dock().read(cx).is_open());
 9256            assert!(panel.is_zoomed(window, cx));
 9257            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9258        });
 9259
 9260        // Transferring focus back to the panel keeps it zoomed
 9261        workspace.update_in(cx, |workspace, window, cx| {
 9262            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 9263        });
 9264
 9265        workspace.update_in(cx, |workspace, window, cx| {
 9266            assert!(workspace.right_dock().read(cx).is_open());
 9267            assert!(panel.is_zoomed(window, cx));
 9268            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9269        });
 9270
 9271        // Close the dock while it is zoomed
 9272        workspace.update_in(cx, |workspace, window, cx| {
 9273            workspace.toggle_dock(DockPosition::Right, window, cx)
 9274        });
 9275
 9276        workspace.update_in(cx, |workspace, window, cx| {
 9277            assert!(!workspace.right_dock().read(cx).is_open());
 9278            assert!(panel.is_zoomed(window, cx));
 9279            assert!(workspace.zoomed.is_none());
 9280            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9281        });
 9282
 9283        // Opening the dock, when it's zoomed, retains focus
 9284        workspace.update_in(cx, |workspace, window, cx| {
 9285            workspace.toggle_dock(DockPosition::Right, window, cx)
 9286        });
 9287
 9288        workspace.update_in(cx, |workspace, window, cx| {
 9289            assert!(workspace.right_dock().read(cx).is_open());
 9290            assert!(panel.is_zoomed(window, cx));
 9291            assert!(workspace.zoomed.is_some());
 9292            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9293        });
 9294
 9295        // Unzoom and close the panel, zoom the active pane.
 9296        panel.update_in(cx, |panel, window, cx| panel.set_zoomed(false, window, cx));
 9297        workspace.update_in(cx, |workspace, window, cx| {
 9298            workspace.toggle_dock(DockPosition::Right, window, cx)
 9299        });
 9300        pane.update_in(cx, |pane, window, cx| {
 9301            pane.toggle_zoom(&Default::default(), window, cx)
 9302        });
 9303
 9304        // Opening a dock unzooms the pane.
 9305        workspace.update_in(cx, |workspace, window, cx| {
 9306            workspace.toggle_dock(DockPosition::Right, window, cx)
 9307        });
 9308        workspace.update_in(cx, |workspace, window, cx| {
 9309            let pane = pane.read(cx);
 9310            assert!(!pane.is_zoomed());
 9311            assert!(!pane.focus_handle(cx).is_focused(window));
 9312            assert!(workspace.right_dock().read(cx).is_open());
 9313            assert!(workspace.zoomed.is_none());
 9314        });
 9315    }
 9316
 9317    #[gpui::test]
 9318    async fn test_toggle_all_docks(cx: &mut gpui::TestAppContext) {
 9319        init_test(cx);
 9320        let fs = FakeFs::new(cx.executor());
 9321
 9322        let project = Project::test(fs, [], cx).await;
 9323        let (workspace, cx) =
 9324            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9325        workspace.update_in(cx, |workspace, window, cx| {
 9326            // Open two docks
 9327            let left_dock = workspace.dock_at_position(DockPosition::Left);
 9328            let right_dock = workspace.dock_at_position(DockPosition::Right);
 9329
 9330            left_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
 9331            right_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
 9332
 9333            assert!(left_dock.read(cx).is_open());
 9334            assert!(right_dock.read(cx).is_open());
 9335        });
 9336
 9337        workspace.update_in(cx, |workspace, window, cx| {
 9338            // Toggle all docks - should close both
 9339            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
 9340
 9341            let left_dock = workspace.dock_at_position(DockPosition::Left);
 9342            let right_dock = workspace.dock_at_position(DockPosition::Right);
 9343            assert!(!left_dock.read(cx).is_open());
 9344            assert!(!right_dock.read(cx).is_open());
 9345        });
 9346
 9347        workspace.update_in(cx, |workspace, window, cx| {
 9348            // Toggle again - should reopen both
 9349            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
 9350
 9351            let left_dock = workspace.dock_at_position(DockPosition::Left);
 9352            let right_dock = workspace.dock_at_position(DockPosition::Right);
 9353            assert!(left_dock.read(cx).is_open());
 9354            assert!(right_dock.read(cx).is_open());
 9355        });
 9356    }
 9357
 9358    #[gpui::test]
 9359    async fn test_toggle_all_with_manual_close(cx: &mut gpui::TestAppContext) {
 9360        init_test(cx);
 9361        let fs = FakeFs::new(cx.executor());
 9362
 9363        let project = Project::test(fs, [], cx).await;
 9364        let (workspace, cx) =
 9365            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9366        workspace.update_in(cx, |workspace, window, cx| {
 9367            // Open two docks
 9368            let left_dock = workspace.dock_at_position(DockPosition::Left);
 9369            let right_dock = workspace.dock_at_position(DockPosition::Right);
 9370
 9371            left_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
 9372            right_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
 9373
 9374            assert!(left_dock.read(cx).is_open());
 9375            assert!(right_dock.read(cx).is_open());
 9376        });
 9377
 9378        workspace.update_in(cx, |workspace, window, cx| {
 9379            // Close them manually
 9380            workspace.toggle_dock(DockPosition::Left, window, cx);
 9381            workspace.toggle_dock(DockPosition::Right, window, cx);
 9382
 9383            let left_dock = workspace.dock_at_position(DockPosition::Left);
 9384            let right_dock = workspace.dock_at_position(DockPosition::Right);
 9385            assert!(!left_dock.read(cx).is_open());
 9386            assert!(!right_dock.read(cx).is_open());
 9387        });
 9388
 9389        workspace.update_in(cx, |workspace, window, cx| {
 9390            // Toggle all docks - only last closed (right dock) should reopen
 9391            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
 9392
 9393            let left_dock = workspace.dock_at_position(DockPosition::Left);
 9394            let right_dock = workspace.dock_at_position(DockPosition::Right);
 9395            assert!(!left_dock.read(cx).is_open());
 9396            assert!(right_dock.read(cx).is_open());
 9397        });
 9398    }
 9399
 9400    #[gpui::test]
 9401    async fn test_toggle_all_docks_after_dock_move(cx: &mut gpui::TestAppContext) {
 9402        init_test(cx);
 9403        let fs = FakeFs::new(cx.executor());
 9404        let project = Project::test(fs, [], cx).await;
 9405        let (workspace, cx) =
 9406            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9407
 9408        // Open two docks (left and right) with one panel each
 9409        let (left_panel, right_panel) = workspace.update_in(cx, |workspace, window, cx| {
 9410            let left_panel = cx.new(|cx| TestPanel::new(DockPosition::Left, cx));
 9411            workspace.add_panel(left_panel.clone(), window, cx);
 9412
 9413            let right_panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 9414            workspace.add_panel(right_panel.clone(), window, cx);
 9415
 9416            workspace.toggle_dock(DockPosition::Left, window, cx);
 9417            workspace.toggle_dock(DockPosition::Right, window, cx);
 9418
 9419            // Verify initial state
 9420            assert!(
 9421                workspace.left_dock().read(cx).is_open(),
 9422                "Left dock should be open"
 9423            );
 9424            assert_eq!(
 9425                workspace
 9426                    .left_dock()
 9427                    .read(cx)
 9428                    .visible_panel()
 9429                    .unwrap()
 9430                    .panel_id(),
 9431                left_panel.panel_id(),
 9432                "Left panel should be visible in left dock"
 9433            );
 9434            assert!(
 9435                workspace.right_dock().read(cx).is_open(),
 9436                "Right dock should be open"
 9437            );
 9438            assert_eq!(
 9439                workspace
 9440                    .right_dock()
 9441                    .read(cx)
 9442                    .visible_panel()
 9443                    .unwrap()
 9444                    .panel_id(),
 9445                right_panel.panel_id(),
 9446                "Right panel should be visible in right dock"
 9447            );
 9448            assert!(
 9449                !workspace.bottom_dock().read(cx).is_open(),
 9450                "Bottom dock should be closed"
 9451            );
 9452
 9453            (left_panel, right_panel)
 9454        });
 9455
 9456        // Focus the left panel and move it to the next position (bottom dock)
 9457        workspace.update_in(cx, |workspace, window, cx| {
 9458            workspace.toggle_panel_focus::<TestPanel>(window, cx); // Focus left panel
 9459            assert!(
 9460                left_panel.read(cx).focus_handle(cx).is_focused(window),
 9461                "Left panel should be focused"
 9462            );
 9463        });
 9464
 9465        cx.dispatch_action(MoveFocusedPanelToNextPosition);
 9466
 9467        // Verify the left panel has moved to the bottom dock, and the bottom dock is now open
 9468        workspace.update(cx, |workspace, cx| {
 9469            assert!(
 9470                !workspace.left_dock().read(cx).is_open(),
 9471                "Left dock should be closed"
 9472            );
 9473            assert!(
 9474                workspace.bottom_dock().read(cx).is_open(),
 9475                "Bottom dock should now be open"
 9476            );
 9477            assert_eq!(
 9478                left_panel.read(cx).position,
 9479                DockPosition::Bottom,
 9480                "Left panel should now be in the bottom dock"
 9481            );
 9482            assert_eq!(
 9483                workspace
 9484                    .bottom_dock()
 9485                    .read(cx)
 9486                    .visible_panel()
 9487                    .unwrap()
 9488                    .panel_id(),
 9489                left_panel.panel_id(),
 9490                "Left panel should be the visible panel in the bottom dock"
 9491            );
 9492        });
 9493
 9494        // Toggle all docks off
 9495        workspace.update_in(cx, |workspace, window, cx| {
 9496            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
 9497            assert!(
 9498                !workspace.left_dock().read(cx).is_open(),
 9499                "Left dock should be closed"
 9500            );
 9501            assert!(
 9502                !workspace.right_dock().read(cx).is_open(),
 9503                "Right dock should be closed"
 9504            );
 9505            assert!(
 9506                !workspace.bottom_dock().read(cx).is_open(),
 9507                "Bottom dock should be closed"
 9508            );
 9509        });
 9510
 9511        // Toggle all docks back on and verify positions are restored
 9512        workspace.update_in(cx, |workspace, window, cx| {
 9513            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
 9514            assert!(
 9515                !workspace.left_dock().read(cx).is_open(),
 9516                "Left dock should remain closed"
 9517            );
 9518            assert!(
 9519                workspace.right_dock().read(cx).is_open(),
 9520                "Right dock should remain open"
 9521            );
 9522            assert!(
 9523                workspace.bottom_dock().read(cx).is_open(),
 9524                "Bottom dock should remain open"
 9525            );
 9526            assert_eq!(
 9527                left_panel.read(cx).position,
 9528                DockPosition::Bottom,
 9529                "Left panel should remain in the bottom dock"
 9530            );
 9531            assert_eq!(
 9532                right_panel.read(cx).position,
 9533                DockPosition::Right,
 9534                "Right panel should remain in the right dock"
 9535            );
 9536            assert_eq!(
 9537                workspace
 9538                    .bottom_dock()
 9539                    .read(cx)
 9540                    .visible_panel()
 9541                    .unwrap()
 9542                    .panel_id(),
 9543                left_panel.panel_id(),
 9544                "Left panel should be the visible panel in the right dock"
 9545            );
 9546        });
 9547    }
 9548
 9549    #[gpui::test]
 9550    async fn test_join_pane_into_next(cx: &mut gpui::TestAppContext) {
 9551        init_test(cx);
 9552
 9553        let fs = FakeFs::new(cx.executor());
 9554
 9555        let project = Project::test(fs, None, cx).await;
 9556        let (workspace, cx) =
 9557            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9558
 9559        // Let's arrange the panes like this:
 9560        //
 9561        // +-----------------------+
 9562        // |         top           |
 9563        // +------+--------+-------+
 9564        // | left | center | right |
 9565        // +------+--------+-------+
 9566        // |        bottom         |
 9567        // +-----------------------+
 9568
 9569        let top_item = cx.new(|cx| {
 9570            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "top.txt", cx)])
 9571        });
 9572        let bottom_item = cx.new(|cx| {
 9573            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "bottom.txt", cx)])
 9574        });
 9575        let left_item = cx.new(|cx| {
 9576            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "left.txt", cx)])
 9577        });
 9578        let right_item = cx.new(|cx| {
 9579            TestItem::new(cx).with_project_items(&[TestProjectItem::new(4, "right.txt", cx)])
 9580        });
 9581        let center_item = cx.new(|cx| {
 9582            TestItem::new(cx).with_project_items(&[TestProjectItem::new(5, "center.txt", cx)])
 9583        });
 9584
 9585        let top_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9586            let top_pane_id = workspace.active_pane().entity_id();
 9587            workspace.add_item_to_active_pane(Box::new(top_item.clone()), None, false, window, cx);
 9588            workspace.split_pane(
 9589                workspace.active_pane().clone(),
 9590                SplitDirection::Down,
 9591                window,
 9592                cx,
 9593            );
 9594            top_pane_id
 9595        });
 9596        let bottom_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9597            let bottom_pane_id = workspace.active_pane().entity_id();
 9598            workspace.add_item_to_active_pane(
 9599                Box::new(bottom_item.clone()),
 9600                None,
 9601                false,
 9602                window,
 9603                cx,
 9604            );
 9605            workspace.split_pane(
 9606                workspace.active_pane().clone(),
 9607                SplitDirection::Up,
 9608                window,
 9609                cx,
 9610            );
 9611            bottom_pane_id
 9612        });
 9613        let left_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9614            let left_pane_id = workspace.active_pane().entity_id();
 9615            workspace.add_item_to_active_pane(Box::new(left_item.clone()), None, false, window, cx);
 9616            workspace.split_pane(
 9617                workspace.active_pane().clone(),
 9618                SplitDirection::Right,
 9619                window,
 9620                cx,
 9621            );
 9622            left_pane_id
 9623        });
 9624        let right_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9625            let right_pane_id = workspace.active_pane().entity_id();
 9626            workspace.add_item_to_active_pane(
 9627                Box::new(right_item.clone()),
 9628                None,
 9629                false,
 9630                window,
 9631                cx,
 9632            );
 9633            workspace.split_pane(
 9634                workspace.active_pane().clone(),
 9635                SplitDirection::Left,
 9636                window,
 9637                cx,
 9638            );
 9639            right_pane_id
 9640        });
 9641        let center_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9642            let center_pane_id = workspace.active_pane().entity_id();
 9643            workspace.add_item_to_active_pane(
 9644                Box::new(center_item.clone()),
 9645                None,
 9646                false,
 9647                window,
 9648                cx,
 9649            );
 9650            center_pane_id
 9651        });
 9652        cx.executor().run_until_parked();
 9653
 9654        workspace.update_in(cx, |workspace, window, cx| {
 9655            assert_eq!(center_pane_id, workspace.active_pane().entity_id());
 9656
 9657            // Join into next from center pane into right
 9658            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9659        });
 9660
 9661        workspace.update_in(cx, |workspace, window, cx| {
 9662            let active_pane = workspace.active_pane();
 9663            assert_eq!(right_pane_id, active_pane.entity_id());
 9664            assert_eq!(2, active_pane.read(cx).items_len());
 9665            let item_ids_in_pane =
 9666                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9667            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9668            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9669
 9670            // Join into next from right pane into bottom
 9671            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9672        });
 9673
 9674        workspace.update_in(cx, |workspace, window, cx| {
 9675            let active_pane = workspace.active_pane();
 9676            assert_eq!(bottom_pane_id, active_pane.entity_id());
 9677            assert_eq!(3, active_pane.read(cx).items_len());
 9678            let item_ids_in_pane =
 9679                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9680            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9681            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9682            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9683
 9684            // Join into next from bottom pane into left
 9685            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9686        });
 9687
 9688        workspace.update_in(cx, |workspace, window, cx| {
 9689            let active_pane = workspace.active_pane();
 9690            assert_eq!(left_pane_id, active_pane.entity_id());
 9691            assert_eq!(4, active_pane.read(cx).items_len());
 9692            let item_ids_in_pane =
 9693                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9694            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9695            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9696            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9697            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9698
 9699            // Join into next from left pane into top
 9700            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9701        });
 9702
 9703        workspace.update_in(cx, |workspace, window, cx| {
 9704            let active_pane = workspace.active_pane();
 9705            assert_eq!(top_pane_id, active_pane.entity_id());
 9706            assert_eq!(5, active_pane.read(cx).items_len());
 9707            let item_ids_in_pane =
 9708                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9709            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9710            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9711            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9712            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9713            assert!(item_ids_in_pane.contains(&top_item.item_id()));
 9714
 9715            // Single pane left: no-op
 9716            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx)
 9717        });
 9718
 9719        workspace.update(cx, |workspace, _cx| {
 9720            let active_pane = workspace.active_pane();
 9721            assert_eq!(top_pane_id, active_pane.entity_id());
 9722        });
 9723    }
 9724
 9725    fn add_an_item_to_active_pane(
 9726        cx: &mut VisualTestContext,
 9727        workspace: &Entity<Workspace>,
 9728        item_id: u64,
 9729    ) -> Entity<TestItem> {
 9730        let item = cx.new(|cx| {
 9731            TestItem::new(cx).with_project_items(&[TestProjectItem::new(
 9732                item_id,
 9733                "item{item_id}.txt",
 9734                cx,
 9735            )])
 9736        });
 9737        workspace.update_in(cx, |workspace, window, cx| {
 9738            workspace.add_item_to_active_pane(Box::new(item.clone()), None, false, window, cx);
 9739        });
 9740        item
 9741    }
 9742
 9743    fn split_pane(cx: &mut VisualTestContext, workspace: &Entity<Workspace>) -> Entity<Pane> {
 9744        workspace.update_in(cx, |workspace, window, cx| {
 9745            workspace.split_pane(
 9746                workspace.active_pane().clone(),
 9747                SplitDirection::Right,
 9748                window,
 9749                cx,
 9750            )
 9751        })
 9752    }
 9753
 9754    #[gpui::test]
 9755    async fn test_join_all_panes(cx: &mut gpui::TestAppContext) {
 9756        init_test(cx);
 9757        let fs = FakeFs::new(cx.executor());
 9758        let project = Project::test(fs, None, cx).await;
 9759        let (workspace, cx) =
 9760            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9761
 9762        add_an_item_to_active_pane(cx, &workspace, 1);
 9763        split_pane(cx, &workspace);
 9764        add_an_item_to_active_pane(cx, &workspace, 2);
 9765        split_pane(cx, &workspace); // empty pane
 9766        split_pane(cx, &workspace);
 9767        let last_item = add_an_item_to_active_pane(cx, &workspace, 3);
 9768
 9769        cx.executor().run_until_parked();
 9770
 9771        workspace.update(cx, |workspace, cx| {
 9772            let num_panes = workspace.panes().len();
 9773            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9774            let active_item = workspace
 9775                .active_pane()
 9776                .read(cx)
 9777                .active_item()
 9778                .expect("item is in focus");
 9779
 9780            assert_eq!(num_panes, 4);
 9781            assert_eq!(num_items_in_current_pane, 1);
 9782            assert_eq!(active_item.item_id(), last_item.item_id());
 9783        });
 9784
 9785        workspace.update_in(cx, |workspace, window, cx| {
 9786            workspace.join_all_panes(window, cx);
 9787        });
 9788
 9789        workspace.update(cx, |workspace, cx| {
 9790            let num_panes = workspace.panes().len();
 9791            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9792            let active_item = workspace
 9793                .active_pane()
 9794                .read(cx)
 9795                .active_item()
 9796                .expect("item is in focus");
 9797
 9798            assert_eq!(num_panes, 1);
 9799            assert_eq!(num_items_in_current_pane, 3);
 9800            assert_eq!(active_item.item_id(), last_item.item_id());
 9801        });
 9802    }
 9803    struct TestModal(FocusHandle);
 9804
 9805    impl TestModal {
 9806        fn new(_: &mut Window, cx: &mut Context<Self>) -> Self {
 9807            Self(cx.focus_handle())
 9808        }
 9809    }
 9810
 9811    impl EventEmitter<DismissEvent> for TestModal {}
 9812
 9813    impl Focusable for TestModal {
 9814        fn focus_handle(&self, _cx: &App) -> FocusHandle {
 9815            self.0.clone()
 9816        }
 9817    }
 9818
 9819    impl ModalView for TestModal {}
 9820
 9821    impl Render for TestModal {
 9822        fn render(
 9823            &mut self,
 9824            _window: &mut Window,
 9825            _cx: &mut Context<TestModal>,
 9826        ) -> impl IntoElement {
 9827            div().track_focus(&self.0)
 9828        }
 9829    }
 9830
 9831    #[gpui::test]
 9832    async fn test_panels(cx: &mut gpui::TestAppContext) {
 9833        init_test(cx);
 9834        let fs = FakeFs::new(cx.executor());
 9835
 9836        let project = Project::test(fs, [], cx).await;
 9837        let (workspace, cx) =
 9838            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9839
 9840        let (panel_1, panel_2) = workspace.update_in(cx, |workspace, window, cx| {
 9841            let panel_1 = cx.new(|cx| TestPanel::new(DockPosition::Left, cx));
 9842            workspace.add_panel(panel_1.clone(), window, cx);
 9843            workspace.toggle_dock(DockPosition::Left, window, cx);
 9844            let panel_2 = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 9845            workspace.add_panel(panel_2.clone(), window, cx);
 9846            workspace.toggle_dock(DockPosition::Right, window, cx);
 9847
 9848            let left_dock = workspace.left_dock();
 9849            assert_eq!(
 9850                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9851                panel_1.panel_id()
 9852            );
 9853            assert_eq!(
 9854                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9855                panel_1.size(window, cx)
 9856            );
 9857
 9858            left_dock.update(cx, |left_dock, cx| {
 9859                left_dock.resize_active_panel(Some(px(1337.)), window, cx)
 9860            });
 9861            assert_eq!(
 9862                workspace
 9863                    .right_dock()
 9864                    .read(cx)
 9865                    .visible_panel()
 9866                    .unwrap()
 9867                    .panel_id(),
 9868                panel_2.panel_id(),
 9869            );
 9870
 9871            (panel_1, panel_2)
 9872        });
 9873
 9874        // Move panel_1 to the right
 9875        panel_1.update_in(cx, |panel_1, window, cx| {
 9876            panel_1.set_position(DockPosition::Right, window, cx)
 9877        });
 9878
 9879        workspace.update_in(cx, |workspace, window, cx| {
 9880            // Since panel_1 was visible on the left, it should now be visible now that it's been moved to the right.
 9881            // Since it was the only panel on the left, the left dock should now be closed.
 9882            assert!(!workspace.left_dock().read(cx).is_open());
 9883            assert!(workspace.left_dock().read(cx).visible_panel().is_none());
 9884            let right_dock = workspace.right_dock();
 9885            assert_eq!(
 9886                right_dock.read(cx).visible_panel().unwrap().panel_id(),
 9887                panel_1.panel_id()
 9888            );
 9889            assert_eq!(
 9890                right_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9891                px(1337.)
 9892            );
 9893
 9894            // Now we move panel_2 to the left
 9895            panel_2.set_position(DockPosition::Left, window, cx);
 9896        });
 9897
 9898        workspace.update(cx, |workspace, cx| {
 9899            // Since panel_2 was not visible on the right, we don't open the left dock.
 9900            assert!(!workspace.left_dock().read(cx).is_open());
 9901            // And the right dock is unaffected in its displaying of panel_1
 9902            assert!(workspace.right_dock().read(cx).is_open());
 9903            assert_eq!(
 9904                workspace
 9905                    .right_dock()
 9906                    .read(cx)
 9907                    .visible_panel()
 9908                    .unwrap()
 9909                    .panel_id(),
 9910                panel_1.panel_id(),
 9911            );
 9912        });
 9913
 9914        // Move panel_1 back to the left
 9915        panel_1.update_in(cx, |panel_1, window, cx| {
 9916            panel_1.set_position(DockPosition::Left, window, cx)
 9917        });
 9918
 9919        workspace.update_in(cx, |workspace, window, cx| {
 9920            // Since panel_1 was visible on the right, we open the left dock and make panel_1 active.
 9921            let left_dock = workspace.left_dock();
 9922            assert!(left_dock.read(cx).is_open());
 9923            assert_eq!(
 9924                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9925                panel_1.panel_id()
 9926            );
 9927            assert_eq!(
 9928                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9929                px(1337.)
 9930            );
 9931            // And the right dock should be closed as it no longer has any panels.
 9932            assert!(!workspace.right_dock().read(cx).is_open());
 9933
 9934            // Now we move panel_1 to the bottom
 9935            panel_1.set_position(DockPosition::Bottom, window, cx);
 9936        });
 9937
 9938        workspace.update_in(cx, |workspace, window, cx| {
 9939            // Since panel_1 was visible on the left, we close the left dock.
 9940            assert!(!workspace.left_dock().read(cx).is_open());
 9941            // The bottom dock is sized based on the panel's default size,
 9942            // since the panel orientation changed from vertical to horizontal.
 9943            let bottom_dock = workspace.bottom_dock();
 9944            assert_eq!(
 9945                bottom_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9946                panel_1.size(window, cx),
 9947            );
 9948            // Close bottom dock and move panel_1 back to the left.
 9949            bottom_dock.update(cx, |bottom_dock, cx| {
 9950                bottom_dock.set_open(false, window, cx)
 9951            });
 9952            panel_1.set_position(DockPosition::Left, window, cx);
 9953        });
 9954
 9955        // Emit activated event on panel 1
 9956        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Activate));
 9957
 9958        // Now the left dock is open and panel_1 is active and focused.
 9959        workspace.update_in(cx, |workspace, window, cx| {
 9960            let left_dock = workspace.left_dock();
 9961            assert!(left_dock.read(cx).is_open());
 9962            assert_eq!(
 9963                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9964                panel_1.panel_id(),
 9965            );
 9966            assert!(panel_1.focus_handle(cx).is_focused(window));
 9967        });
 9968
 9969        // Emit closed event on panel 2, which is not active
 9970        panel_2.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9971
 9972        // Wo don't close the left dock, because panel_2 wasn't the active panel
 9973        workspace.update(cx, |workspace, cx| {
 9974            let left_dock = workspace.left_dock();
 9975            assert!(left_dock.read(cx).is_open());
 9976            assert_eq!(
 9977                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9978                panel_1.panel_id(),
 9979            );
 9980        });
 9981
 9982        // Emitting a ZoomIn event shows the panel as zoomed.
 9983        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomIn));
 9984        workspace.read_with(cx, |workspace, _| {
 9985            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9986            assert_eq!(workspace.zoomed_position, Some(DockPosition::Left));
 9987        });
 9988
 9989        // Move panel to another dock while it is zoomed
 9990        panel_1.update_in(cx, |panel, window, cx| {
 9991            panel.set_position(DockPosition::Right, window, cx)
 9992        });
 9993        workspace.read_with(cx, |workspace, _| {
 9994            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9995
 9996            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9997        });
 9998
 9999        // This is a helper for getting a:
10000        // - valid focus on an element,
10001        // - that isn't a part of the panes and panels system of the Workspace,
10002        // - and doesn't trigger the 'on_focus_lost' API.
10003        let focus_other_view = {
10004            let workspace = workspace.clone();
10005            move |cx: &mut VisualTestContext| {
10006                workspace.update_in(cx, |workspace, window, cx| {
10007                    if workspace.active_modal::<TestModal>(cx).is_some() {
10008                        workspace.toggle_modal(window, cx, TestModal::new);
10009                        workspace.toggle_modal(window, cx, TestModal::new);
10010                    } else {
10011                        workspace.toggle_modal(window, cx, TestModal::new);
10012                    }
10013                })
10014            }
10015        };
10016
10017        // If focus is transferred to another view that's not a panel or another pane, we still show
10018        // the panel as zoomed.
10019        focus_other_view(cx);
10020        workspace.read_with(cx, |workspace, _| {
10021            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
10022            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
10023        });
10024
10025        // If focus is transferred elsewhere in the workspace, the panel is no longer zoomed.
10026        workspace.update_in(cx, |_workspace, window, cx| {
10027            cx.focus_self(window);
10028        });
10029        workspace.read_with(cx, |workspace, _| {
10030            assert_eq!(workspace.zoomed, None);
10031            assert_eq!(workspace.zoomed_position, None);
10032        });
10033
10034        // If focus is transferred again to another view that's not a panel or a pane, we won't
10035        // show the panel as zoomed because it wasn't zoomed before.
10036        focus_other_view(cx);
10037        workspace.read_with(cx, |workspace, _| {
10038            assert_eq!(workspace.zoomed, None);
10039            assert_eq!(workspace.zoomed_position, None);
10040        });
10041
10042        // When the panel is activated, it is zoomed again.
10043        cx.dispatch_action(ToggleRightDock);
10044        workspace.read_with(cx, |workspace, _| {
10045            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
10046            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
10047        });
10048
10049        // Emitting a ZoomOut event unzooms the panel.
10050        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomOut));
10051        workspace.read_with(cx, |workspace, _| {
10052            assert_eq!(workspace.zoomed, None);
10053            assert_eq!(workspace.zoomed_position, None);
10054        });
10055
10056        // Emit closed event on panel 1, which is active
10057        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Close));
10058
10059        // Now the left dock is closed, because panel_1 was the active panel
10060        workspace.update(cx, |workspace, cx| {
10061            let right_dock = workspace.right_dock();
10062            assert!(!right_dock.read(cx).is_open());
10063        });
10064    }
10065
10066    #[gpui::test]
10067    async fn test_no_save_prompt_when_multi_buffer_dirty_items_closed(cx: &mut TestAppContext) {
10068        init_test(cx);
10069
10070        let fs = FakeFs::new(cx.background_executor.clone());
10071        let project = Project::test(fs, [], cx).await;
10072        let (workspace, cx) =
10073            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10074        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10075
10076        let dirty_regular_buffer = cx.new(|cx| {
10077            TestItem::new(cx)
10078                .with_dirty(true)
10079                .with_label("1.txt")
10080                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10081        });
10082        let dirty_regular_buffer_2 = cx.new(|cx| {
10083            TestItem::new(cx)
10084                .with_dirty(true)
10085                .with_label("2.txt")
10086                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10087        });
10088        let dirty_multi_buffer_with_both = cx.new(|cx| {
10089            TestItem::new(cx)
10090                .with_dirty(true)
10091                .with_buffer_kind(ItemBufferKind::Multibuffer)
10092                .with_label("Fake Project Search")
10093                .with_project_items(&[
10094                    dirty_regular_buffer.read(cx).project_items[0].clone(),
10095                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
10096                ])
10097        });
10098        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
10099        workspace.update_in(cx, |workspace, window, cx| {
10100            workspace.add_item(
10101                pane.clone(),
10102                Box::new(dirty_regular_buffer.clone()),
10103                None,
10104                false,
10105                false,
10106                window,
10107                cx,
10108            );
10109            workspace.add_item(
10110                pane.clone(),
10111                Box::new(dirty_regular_buffer_2.clone()),
10112                None,
10113                false,
10114                false,
10115                window,
10116                cx,
10117            );
10118            workspace.add_item(
10119                pane.clone(),
10120                Box::new(dirty_multi_buffer_with_both.clone()),
10121                None,
10122                false,
10123                false,
10124                window,
10125                cx,
10126            );
10127        });
10128
10129        pane.update_in(cx, |pane, window, cx| {
10130            pane.activate_item(2, true, true, window, cx);
10131            assert_eq!(
10132                pane.active_item().unwrap().item_id(),
10133                multi_buffer_with_both_files_id,
10134                "Should select the multi buffer in the pane"
10135            );
10136        });
10137        let close_all_but_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
10138            pane.close_other_items(
10139                &CloseOtherItems {
10140                    save_intent: Some(SaveIntent::Save),
10141                    close_pinned: true,
10142                },
10143                None,
10144                window,
10145                cx,
10146            )
10147        });
10148        cx.background_executor.run_until_parked();
10149        assert!(!cx.has_pending_prompt());
10150        close_all_but_multi_buffer_task
10151            .await
10152            .expect("Closing all buffers but the multi buffer failed");
10153        pane.update(cx, |pane, cx| {
10154            assert_eq!(dirty_regular_buffer.read(cx).save_count, 1);
10155            assert_eq!(dirty_multi_buffer_with_both.read(cx).save_count, 0);
10156            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 1);
10157            assert_eq!(pane.items_len(), 1);
10158            assert_eq!(
10159                pane.active_item().unwrap().item_id(),
10160                multi_buffer_with_both_files_id,
10161                "Should have only the multi buffer left in the pane"
10162            );
10163            assert!(
10164                dirty_multi_buffer_with_both.read(cx).is_dirty,
10165                "The multi buffer containing the unsaved buffer should still be dirty"
10166            );
10167        });
10168
10169        dirty_regular_buffer.update(cx, |buffer, cx| {
10170            buffer.project_items[0].update(cx, |pi, _| pi.is_dirty = true)
10171        });
10172
10173        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
10174            pane.close_active_item(
10175                &CloseActiveItem {
10176                    save_intent: Some(SaveIntent::Close),
10177                    close_pinned: false,
10178                },
10179                window,
10180                cx,
10181            )
10182        });
10183        cx.background_executor.run_until_parked();
10184        assert!(
10185            cx.has_pending_prompt(),
10186            "Dirty multi buffer should prompt a save dialog"
10187        );
10188        cx.simulate_prompt_answer("Save");
10189        cx.background_executor.run_until_parked();
10190        close_multi_buffer_task
10191            .await
10192            .expect("Closing the multi buffer failed");
10193        pane.update(cx, |pane, cx| {
10194            assert_eq!(
10195                dirty_multi_buffer_with_both.read(cx).save_count,
10196                1,
10197                "Multi buffer item should get be saved"
10198            );
10199            // Test impl does not save inner items, so we do not assert them
10200            assert_eq!(
10201                pane.items_len(),
10202                0,
10203                "No more items should be left in the pane"
10204            );
10205            assert!(pane.active_item().is_none());
10206        });
10207    }
10208
10209    #[gpui::test]
10210    async fn test_save_prompt_when_dirty_multi_buffer_closed_with_some_of_its_dirty_items_not_present_in_the_pane(
10211        cx: &mut TestAppContext,
10212    ) {
10213        init_test(cx);
10214
10215        let fs = FakeFs::new(cx.background_executor.clone());
10216        let project = Project::test(fs, [], cx).await;
10217        let (workspace, cx) =
10218            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10219        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10220
10221        let dirty_regular_buffer = cx.new(|cx| {
10222            TestItem::new(cx)
10223                .with_dirty(true)
10224                .with_label("1.txt")
10225                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10226        });
10227        let dirty_regular_buffer_2 = cx.new(|cx| {
10228            TestItem::new(cx)
10229                .with_dirty(true)
10230                .with_label("2.txt")
10231                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10232        });
10233        let clear_regular_buffer = cx.new(|cx| {
10234            TestItem::new(cx)
10235                .with_label("3.txt")
10236                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
10237        });
10238
10239        let dirty_multi_buffer_with_both = cx.new(|cx| {
10240            TestItem::new(cx)
10241                .with_dirty(true)
10242                .with_buffer_kind(ItemBufferKind::Multibuffer)
10243                .with_label("Fake Project Search")
10244                .with_project_items(&[
10245                    dirty_regular_buffer.read(cx).project_items[0].clone(),
10246                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
10247                    clear_regular_buffer.read(cx).project_items[0].clone(),
10248                ])
10249        });
10250        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
10251        workspace.update_in(cx, |workspace, window, cx| {
10252            workspace.add_item(
10253                pane.clone(),
10254                Box::new(dirty_regular_buffer.clone()),
10255                None,
10256                false,
10257                false,
10258                window,
10259                cx,
10260            );
10261            workspace.add_item(
10262                pane.clone(),
10263                Box::new(dirty_multi_buffer_with_both.clone()),
10264                None,
10265                false,
10266                false,
10267                window,
10268                cx,
10269            );
10270        });
10271
10272        pane.update_in(cx, |pane, window, cx| {
10273            pane.activate_item(1, true, true, window, cx);
10274            assert_eq!(
10275                pane.active_item().unwrap().item_id(),
10276                multi_buffer_with_both_files_id,
10277                "Should select the multi buffer in the pane"
10278            );
10279        });
10280        let _close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
10281            pane.close_active_item(
10282                &CloseActiveItem {
10283                    save_intent: None,
10284                    close_pinned: false,
10285                },
10286                window,
10287                cx,
10288            )
10289        });
10290        cx.background_executor.run_until_parked();
10291        assert!(
10292            cx.has_pending_prompt(),
10293            "With one dirty item from the multi buffer not being in the pane, a save prompt should be shown"
10294        );
10295    }
10296
10297    /// Tests that when `close_on_file_delete` is enabled, files are automatically
10298    /// closed when they are deleted from disk.
10299    #[gpui::test]
10300    async fn test_close_on_disk_deletion_enabled(cx: &mut TestAppContext) {
10301        init_test(cx);
10302
10303        // Enable the close_on_disk_deletion setting
10304        cx.update_global(|store: &mut SettingsStore, cx| {
10305            store.update_user_settings(cx, |settings| {
10306                settings.workspace.close_on_file_delete = Some(true);
10307            });
10308        });
10309
10310        let fs = FakeFs::new(cx.background_executor.clone());
10311        let project = Project::test(fs, [], cx).await;
10312        let (workspace, cx) =
10313            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10314        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10315
10316        // Create a test item that simulates a file
10317        let item = cx.new(|cx| {
10318            TestItem::new(cx)
10319                .with_label("test.txt")
10320                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
10321        });
10322
10323        // Add item to workspace
10324        workspace.update_in(cx, |workspace, window, cx| {
10325            workspace.add_item(
10326                pane.clone(),
10327                Box::new(item.clone()),
10328                None,
10329                false,
10330                false,
10331                window,
10332                cx,
10333            );
10334        });
10335
10336        // Verify the item is in the pane
10337        pane.read_with(cx, |pane, _| {
10338            assert_eq!(pane.items().count(), 1);
10339        });
10340
10341        // Simulate file deletion by setting the item's deleted state
10342        item.update(cx, |item, _| {
10343            item.set_has_deleted_file(true);
10344        });
10345
10346        // Emit UpdateTab event to trigger the close behavior
10347        cx.run_until_parked();
10348        item.update(cx, |_, cx| {
10349            cx.emit(ItemEvent::UpdateTab);
10350        });
10351
10352        // Allow the close operation to complete
10353        cx.run_until_parked();
10354
10355        // Verify the item was automatically closed
10356        pane.read_with(cx, |pane, _| {
10357            assert_eq!(
10358                pane.items().count(),
10359                0,
10360                "Item should be automatically closed when file is deleted"
10361            );
10362        });
10363    }
10364
10365    /// Tests that when `close_on_file_delete` is disabled (default), files remain
10366    /// open with a strikethrough when they are deleted from disk.
10367    #[gpui::test]
10368    async fn test_close_on_disk_deletion_disabled(cx: &mut TestAppContext) {
10369        init_test(cx);
10370
10371        // Ensure close_on_disk_deletion is disabled (default)
10372        cx.update_global(|store: &mut SettingsStore, cx| {
10373            store.update_user_settings(cx, |settings| {
10374                settings.workspace.close_on_file_delete = Some(false);
10375            });
10376        });
10377
10378        let fs = FakeFs::new(cx.background_executor.clone());
10379        let project = Project::test(fs, [], cx).await;
10380        let (workspace, cx) =
10381            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10382        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10383
10384        // Create a test item that simulates a file
10385        let item = cx.new(|cx| {
10386            TestItem::new(cx)
10387                .with_label("test.txt")
10388                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
10389        });
10390
10391        // Add item to workspace
10392        workspace.update_in(cx, |workspace, window, cx| {
10393            workspace.add_item(
10394                pane.clone(),
10395                Box::new(item.clone()),
10396                None,
10397                false,
10398                false,
10399                window,
10400                cx,
10401            );
10402        });
10403
10404        // Verify the item is in the pane
10405        pane.read_with(cx, |pane, _| {
10406            assert_eq!(pane.items().count(), 1);
10407        });
10408
10409        // Simulate file deletion
10410        item.update(cx, |item, _| {
10411            item.set_has_deleted_file(true);
10412        });
10413
10414        // Emit UpdateTab event
10415        cx.run_until_parked();
10416        item.update(cx, |_, cx| {
10417            cx.emit(ItemEvent::UpdateTab);
10418        });
10419
10420        // Allow any potential close operation to complete
10421        cx.run_until_parked();
10422
10423        // Verify the item remains open (with strikethrough)
10424        pane.read_with(cx, |pane, _| {
10425            assert_eq!(
10426                pane.items().count(),
10427                1,
10428                "Item should remain open when close_on_disk_deletion is disabled"
10429            );
10430        });
10431
10432        // Verify the item shows as deleted
10433        item.read_with(cx, |item, _| {
10434            assert!(
10435                item.has_deleted_file,
10436                "Item should be marked as having deleted file"
10437            );
10438        });
10439    }
10440
10441    /// Tests that dirty files are not automatically closed when deleted from disk,
10442    /// even when `close_on_file_delete` is enabled. This ensures users don't lose
10443    /// unsaved changes without being prompted.
10444    #[gpui::test]
10445    async fn test_close_on_disk_deletion_with_dirty_file(cx: &mut TestAppContext) {
10446        init_test(cx);
10447
10448        // Enable the close_on_file_delete setting
10449        cx.update_global(|store: &mut SettingsStore, cx| {
10450            store.update_user_settings(cx, |settings| {
10451                settings.workspace.close_on_file_delete = Some(true);
10452            });
10453        });
10454
10455        let fs = FakeFs::new(cx.background_executor.clone());
10456        let project = Project::test(fs, [], cx).await;
10457        let (workspace, cx) =
10458            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10459        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10460
10461        // Create a dirty test item
10462        let item = cx.new(|cx| {
10463            TestItem::new(cx)
10464                .with_dirty(true)
10465                .with_label("test.txt")
10466                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
10467        });
10468
10469        // Add item to workspace
10470        workspace.update_in(cx, |workspace, window, cx| {
10471            workspace.add_item(
10472                pane.clone(),
10473                Box::new(item.clone()),
10474                None,
10475                false,
10476                false,
10477                window,
10478                cx,
10479            );
10480        });
10481
10482        // Simulate file deletion
10483        item.update(cx, |item, _| {
10484            item.set_has_deleted_file(true);
10485        });
10486
10487        // Emit UpdateTab event to trigger the close behavior
10488        cx.run_until_parked();
10489        item.update(cx, |_, cx| {
10490            cx.emit(ItemEvent::UpdateTab);
10491        });
10492
10493        // Allow any potential close operation to complete
10494        cx.run_until_parked();
10495
10496        // Verify the item remains open (dirty files are not auto-closed)
10497        pane.read_with(cx, |pane, _| {
10498            assert_eq!(
10499                pane.items().count(),
10500                1,
10501                "Dirty items should not be automatically closed even when file is deleted"
10502            );
10503        });
10504
10505        // Verify the item is marked as deleted and still dirty
10506        item.read_with(cx, |item, _| {
10507            assert!(
10508                item.has_deleted_file,
10509                "Item should be marked as having deleted file"
10510            );
10511            assert!(item.is_dirty, "Item should still be dirty");
10512        });
10513    }
10514
10515    /// Tests that navigation history is cleaned up when files are auto-closed
10516    /// due to deletion from disk.
10517    #[gpui::test]
10518    async fn test_close_on_disk_deletion_cleans_navigation_history(cx: &mut TestAppContext) {
10519        init_test(cx);
10520
10521        // Enable the close_on_file_delete setting
10522        cx.update_global(|store: &mut SettingsStore, cx| {
10523            store.update_user_settings(cx, |settings| {
10524                settings.workspace.close_on_file_delete = Some(true);
10525            });
10526        });
10527
10528        let fs = FakeFs::new(cx.background_executor.clone());
10529        let project = Project::test(fs, [], cx).await;
10530        let (workspace, cx) =
10531            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10532        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10533
10534        // Create test items
10535        let item1 = cx.new(|cx| {
10536            TestItem::new(cx)
10537                .with_label("test1.txt")
10538                .with_project_items(&[TestProjectItem::new(1, "test1.txt", cx)])
10539        });
10540        let item1_id = item1.item_id();
10541
10542        let item2 = cx.new(|cx| {
10543            TestItem::new(cx)
10544                .with_label("test2.txt")
10545                .with_project_items(&[TestProjectItem::new(2, "test2.txt", cx)])
10546        });
10547
10548        // Add items to workspace
10549        workspace.update_in(cx, |workspace, window, cx| {
10550            workspace.add_item(
10551                pane.clone(),
10552                Box::new(item1.clone()),
10553                None,
10554                false,
10555                false,
10556                window,
10557                cx,
10558            );
10559            workspace.add_item(
10560                pane.clone(),
10561                Box::new(item2.clone()),
10562                None,
10563                false,
10564                false,
10565                window,
10566                cx,
10567            );
10568        });
10569
10570        // Activate item1 to ensure it gets navigation entries
10571        pane.update_in(cx, |pane, window, cx| {
10572            pane.activate_item(0, true, true, window, cx);
10573        });
10574
10575        // Switch to item2 and back to create navigation history
10576        pane.update_in(cx, |pane, window, cx| {
10577            pane.activate_item(1, true, true, window, cx);
10578        });
10579        cx.run_until_parked();
10580
10581        pane.update_in(cx, |pane, window, cx| {
10582            pane.activate_item(0, true, true, window, cx);
10583        });
10584        cx.run_until_parked();
10585
10586        // Simulate file deletion for item1
10587        item1.update(cx, |item, _| {
10588            item.set_has_deleted_file(true);
10589        });
10590
10591        // Emit UpdateTab event to trigger the close behavior
10592        item1.update(cx, |_, cx| {
10593            cx.emit(ItemEvent::UpdateTab);
10594        });
10595        cx.run_until_parked();
10596
10597        // Verify item1 was closed
10598        pane.read_with(cx, |pane, _| {
10599            assert_eq!(
10600                pane.items().count(),
10601                1,
10602                "Should have 1 item remaining after auto-close"
10603            );
10604        });
10605
10606        // Check navigation history after close
10607        let has_item = pane.read_with(cx, |pane, cx| {
10608            let mut has_item = false;
10609            pane.nav_history().for_each_entry(cx, |entry, _| {
10610                if entry.item.id() == item1_id {
10611                    has_item = true;
10612                }
10613            });
10614            has_item
10615        });
10616
10617        assert!(
10618            !has_item,
10619            "Navigation history should not contain closed item entries"
10620        );
10621    }
10622
10623    #[gpui::test]
10624    async fn test_no_save_prompt_when_dirty_multi_buffer_closed_with_all_of_its_dirty_items_present_in_the_pane(
10625        cx: &mut TestAppContext,
10626    ) {
10627        init_test(cx);
10628
10629        let fs = FakeFs::new(cx.background_executor.clone());
10630        let project = Project::test(fs, [], cx).await;
10631        let (workspace, cx) =
10632            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10633        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10634
10635        let dirty_regular_buffer = cx.new(|cx| {
10636            TestItem::new(cx)
10637                .with_dirty(true)
10638                .with_label("1.txt")
10639                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10640        });
10641        let dirty_regular_buffer_2 = cx.new(|cx| {
10642            TestItem::new(cx)
10643                .with_dirty(true)
10644                .with_label("2.txt")
10645                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10646        });
10647        let clear_regular_buffer = cx.new(|cx| {
10648            TestItem::new(cx)
10649                .with_label("3.txt")
10650                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
10651        });
10652
10653        let dirty_multi_buffer = cx.new(|cx| {
10654            TestItem::new(cx)
10655                .with_dirty(true)
10656                .with_buffer_kind(ItemBufferKind::Multibuffer)
10657                .with_label("Fake Project Search")
10658                .with_project_items(&[
10659                    dirty_regular_buffer.read(cx).project_items[0].clone(),
10660                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
10661                    clear_regular_buffer.read(cx).project_items[0].clone(),
10662                ])
10663        });
10664        workspace.update_in(cx, |workspace, window, cx| {
10665            workspace.add_item(
10666                pane.clone(),
10667                Box::new(dirty_regular_buffer.clone()),
10668                None,
10669                false,
10670                false,
10671                window,
10672                cx,
10673            );
10674            workspace.add_item(
10675                pane.clone(),
10676                Box::new(dirty_regular_buffer_2.clone()),
10677                None,
10678                false,
10679                false,
10680                window,
10681                cx,
10682            );
10683            workspace.add_item(
10684                pane.clone(),
10685                Box::new(dirty_multi_buffer.clone()),
10686                None,
10687                false,
10688                false,
10689                window,
10690                cx,
10691            );
10692        });
10693
10694        pane.update_in(cx, |pane, window, cx| {
10695            pane.activate_item(2, true, true, window, cx);
10696            assert_eq!(
10697                pane.active_item().unwrap().item_id(),
10698                dirty_multi_buffer.item_id(),
10699                "Should select the multi buffer in the pane"
10700            );
10701        });
10702        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
10703            pane.close_active_item(
10704                &CloseActiveItem {
10705                    save_intent: None,
10706                    close_pinned: false,
10707                },
10708                window,
10709                cx,
10710            )
10711        });
10712        cx.background_executor.run_until_parked();
10713        assert!(
10714            !cx.has_pending_prompt(),
10715            "All dirty items from the multi buffer are in the pane still, no save prompts should be shown"
10716        );
10717        close_multi_buffer_task
10718            .await
10719            .expect("Closing multi buffer failed");
10720        pane.update(cx, |pane, cx| {
10721            assert_eq!(dirty_regular_buffer.read(cx).save_count, 0);
10722            assert_eq!(dirty_multi_buffer.read(cx).save_count, 0);
10723            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 0);
10724            assert_eq!(
10725                pane.items()
10726                    .map(|item| item.item_id())
10727                    .sorted()
10728                    .collect::<Vec<_>>(),
10729                vec![
10730                    dirty_regular_buffer.item_id(),
10731                    dirty_regular_buffer_2.item_id(),
10732                ],
10733                "Should have no multi buffer left in the pane"
10734            );
10735            assert!(dirty_regular_buffer.read(cx).is_dirty);
10736            assert!(dirty_regular_buffer_2.read(cx).is_dirty);
10737        });
10738    }
10739
10740    #[gpui::test]
10741    async fn test_move_focused_panel_to_next_position(cx: &mut gpui::TestAppContext) {
10742        init_test(cx);
10743        let fs = FakeFs::new(cx.executor());
10744        let project = Project::test(fs, [], cx).await;
10745        let (workspace, cx) =
10746            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10747
10748        // Add a new panel to the right dock, opening the dock and setting the
10749        // focus to the new panel.
10750        let panel = workspace.update_in(cx, |workspace, window, cx| {
10751            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
10752            workspace.add_panel(panel.clone(), window, cx);
10753
10754            workspace
10755                .right_dock()
10756                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
10757
10758            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10759
10760            panel
10761        });
10762
10763        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10764        // panel to the next valid position which, in this case, is the left
10765        // dock.
10766        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10767        workspace.update(cx, |workspace, cx| {
10768            assert!(workspace.left_dock().read(cx).is_open());
10769            assert_eq!(panel.read(cx).position, DockPosition::Left);
10770        });
10771
10772        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10773        // panel to the next valid position which, in this case, is the bottom
10774        // dock.
10775        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10776        workspace.update(cx, |workspace, cx| {
10777            assert!(workspace.bottom_dock().read(cx).is_open());
10778            assert_eq!(panel.read(cx).position, DockPosition::Bottom);
10779        });
10780
10781        // Dispatch the `MoveFocusedPanelToNextPosition` action again, this time
10782        // around moving the panel to its initial position, the right dock.
10783        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10784        workspace.update(cx, |workspace, cx| {
10785            assert!(workspace.right_dock().read(cx).is_open());
10786            assert_eq!(panel.read(cx).position, DockPosition::Right);
10787        });
10788
10789        // Remove focus from the panel, ensuring that, if the panel is not
10790        // focused, the `MoveFocusedPanelToNextPosition` action does not update
10791        // the panel's position, so the panel is still in the right dock.
10792        workspace.update_in(cx, |workspace, window, cx| {
10793            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10794        });
10795
10796        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10797        workspace.update(cx, |workspace, cx| {
10798            assert!(workspace.right_dock().read(cx).is_open());
10799            assert_eq!(panel.read(cx).position, DockPosition::Right);
10800        });
10801    }
10802
10803    #[gpui::test]
10804    async fn test_moving_items_create_panes(cx: &mut TestAppContext) {
10805        init_test(cx);
10806
10807        let fs = FakeFs::new(cx.executor());
10808        let project = Project::test(fs, [], cx).await;
10809        let (workspace, cx) =
10810            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10811
10812        let item_1 = cx.new(|cx| {
10813            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10814        });
10815        workspace.update_in(cx, |workspace, window, cx| {
10816            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10817            workspace.move_item_to_pane_in_direction(
10818                &MoveItemToPaneInDirection {
10819                    direction: SplitDirection::Right,
10820                    focus: true,
10821                    clone: false,
10822                },
10823                window,
10824                cx,
10825            );
10826            workspace.move_item_to_pane_at_index(
10827                &MoveItemToPane {
10828                    destination: 3,
10829                    focus: true,
10830                    clone: false,
10831                },
10832                window,
10833                cx,
10834            );
10835
10836            assert_eq!(workspace.panes.len(), 1, "No new panes were created");
10837            assert_eq!(
10838                pane_items_paths(&workspace.active_pane, cx),
10839                vec!["first.txt".to_string()],
10840                "Single item was not moved anywhere"
10841            );
10842        });
10843
10844        let item_2 = cx.new(|cx| {
10845            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "second.txt", cx)])
10846        });
10847        workspace.update_in(cx, |workspace, window, cx| {
10848            workspace.add_item_to_active_pane(Box::new(item_2), None, true, window, cx);
10849            assert_eq!(
10850                pane_items_paths(&workspace.panes[0], cx),
10851                vec!["first.txt".to_string(), "second.txt".to_string()],
10852            );
10853            workspace.move_item_to_pane_in_direction(
10854                &MoveItemToPaneInDirection {
10855                    direction: SplitDirection::Right,
10856                    focus: true,
10857                    clone: false,
10858                },
10859                window,
10860                cx,
10861            );
10862
10863            assert_eq!(workspace.panes.len(), 2, "A new pane should be created");
10864            assert_eq!(
10865                pane_items_paths(&workspace.panes[0], cx),
10866                vec!["first.txt".to_string()],
10867                "After moving, one item should be left in the original pane"
10868            );
10869            assert_eq!(
10870                pane_items_paths(&workspace.panes[1], cx),
10871                vec!["second.txt".to_string()],
10872                "New item should have been moved to the new pane"
10873            );
10874        });
10875
10876        let item_3 = cx.new(|cx| {
10877            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "third.txt", cx)])
10878        });
10879        workspace.update_in(cx, |workspace, window, cx| {
10880            let original_pane = workspace.panes[0].clone();
10881            workspace.set_active_pane(&original_pane, window, cx);
10882            workspace.add_item_to_active_pane(Box::new(item_3), None, true, window, cx);
10883            assert_eq!(workspace.panes.len(), 2, "No new panes were created");
10884            assert_eq!(
10885                pane_items_paths(&workspace.active_pane, cx),
10886                vec!["first.txt".to_string(), "third.txt".to_string()],
10887                "New pane should be ready to move one item out"
10888            );
10889
10890            workspace.move_item_to_pane_at_index(
10891                &MoveItemToPane {
10892                    destination: 3,
10893                    focus: true,
10894                    clone: false,
10895                },
10896                window,
10897                cx,
10898            );
10899            assert_eq!(workspace.panes.len(), 3, "A new pane should be created");
10900            assert_eq!(
10901                pane_items_paths(&workspace.active_pane, cx),
10902                vec!["first.txt".to_string()],
10903                "After moving, one item should be left in the original pane"
10904            );
10905            assert_eq!(
10906                pane_items_paths(&workspace.panes[1], cx),
10907                vec!["second.txt".to_string()],
10908                "Previously created pane should be unchanged"
10909            );
10910            assert_eq!(
10911                pane_items_paths(&workspace.panes[2], cx),
10912                vec!["third.txt".to_string()],
10913                "New item should have been moved to the new pane"
10914            );
10915        });
10916    }
10917
10918    #[gpui::test]
10919    async fn test_moving_items_can_clone_panes(cx: &mut TestAppContext) {
10920        init_test(cx);
10921
10922        let fs = FakeFs::new(cx.executor());
10923        let project = Project::test(fs, [], cx).await;
10924        let (workspace, cx) =
10925            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10926
10927        let item_1 = cx.new(|cx| {
10928            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10929        });
10930        workspace.update_in(cx, |workspace, window, cx| {
10931            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10932            workspace.move_item_to_pane_in_direction(
10933                &MoveItemToPaneInDirection {
10934                    direction: SplitDirection::Right,
10935                    focus: true,
10936                    clone: true,
10937                },
10938                window,
10939                cx,
10940            );
10941            workspace.move_item_to_pane_at_index(
10942                &MoveItemToPane {
10943                    destination: 3,
10944                    focus: true,
10945                    clone: true,
10946                },
10947                window,
10948                cx,
10949            );
10950        });
10951        cx.run_until_parked();
10952
10953        workspace.update(cx, |workspace, cx| {
10954            assert_eq!(workspace.panes.len(), 3, "Two new panes were created");
10955            for pane in workspace.panes() {
10956                assert_eq!(
10957                    pane_items_paths(pane, cx),
10958                    vec!["first.txt".to_string()],
10959                    "Single item exists in all panes"
10960                );
10961            }
10962        });
10963
10964        // verify that the active pane has been updated after waiting for the
10965        // pane focus event to fire and resolve
10966        workspace.read_with(cx, |workspace, _app| {
10967            assert_eq!(
10968                workspace.active_pane(),
10969                &workspace.panes[2],
10970                "The third pane should be the active one: {:?}",
10971                workspace.panes
10972            );
10973        })
10974    }
10975
10976    mod register_project_item_tests {
10977
10978        use super::*;
10979
10980        // View
10981        struct TestPngItemView {
10982            focus_handle: FocusHandle,
10983        }
10984        // Model
10985        struct TestPngItem {}
10986
10987        impl project::ProjectItem for TestPngItem {
10988            fn try_open(
10989                _project: &Entity<Project>,
10990                path: &ProjectPath,
10991                cx: &mut App,
10992            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10993                if path.path.extension().unwrap() == "png" {
10994                    Some(cx.spawn(async move |cx| cx.new(|_| TestPngItem {})))
10995                } else {
10996                    None
10997                }
10998            }
10999
11000            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
11001                None
11002            }
11003
11004            fn project_path(&self, _: &App) -> Option<ProjectPath> {
11005                None
11006            }
11007
11008            fn is_dirty(&self) -> bool {
11009                false
11010            }
11011        }
11012
11013        impl Item for TestPngItemView {
11014            type Event = ();
11015            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
11016                "".into()
11017            }
11018        }
11019        impl EventEmitter<()> for TestPngItemView {}
11020        impl Focusable for TestPngItemView {
11021            fn focus_handle(&self, _cx: &App) -> FocusHandle {
11022                self.focus_handle.clone()
11023            }
11024        }
11025
11026        impl Render for TestPngItemView {
11027            fn render(
11028                &mut self,
11029                _window: &mut Window,
11030                _cx: &mut Context<Self>,
11031            ) -> impl IntoElement {
11032                Empty
11033            }
11034        }
11035
11036        impl ProjectItem for TestPngItemView {
11037            type Item = TestPngItem;
11038
11039            fn for_project_item(
11040                _project: Entity<Project>,
11041                _pane: Option<&Pane>,
11042                _item: Entity<Self::Item>,
11043                _: &mut Window,
11044                cx: &mut Context<Self>,
11045            ) -> Self
11046            where
11047                Self: Sized,
11048            {
11049                Self {
11050                    focus_handle: cx.focus_handle(),
11051                }
11052            }
11053        }
11054
11055        // View
11056        struct TestIpynbItemView {
11057            focus_handle: FocusHandle,
11058        }
11059        // Model
11060        struct TestIpynbItem {}
11061
11062        impl project::ProjectItem for TestIpynbItem {
11063            fn try_open(
11064                _project: &Entity<Project>,
11065                path: &ProjectPath,
11066                cx: &mut App,
11067            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
11068                if path.path.extension().unwrap() == "ipynb" {
11069                    Some(cx.spawn(async move |cx| cx.new(|_| TestIpynbItem {})))
11070                } else {
11071                    None
11072                }
11073            }
11074
11075            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
11076                None
11077            }
11078
11079            fn project_path(&self, _: &App) -> Option<ProjectPath> {
11080                None
11081            }
11082
11083            fn is_dirty(&self) -> bool {
11084                false
11085            }
11086        }
11087
11088        impl Item for TestIpynbItemView {
11089            type Event = ();
11090            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
11091                "".into()
11092            }
11093        }
11094        impl EventEmitter<()> for TestIpynbItemView {}
11095        impl Focusable for TestIpynbItemView {
11096            fn focus_handle(&self, _cx: &App) -> FocusHandle {
11097                self.focus_handle.clone()
11098            }
11099        }
11100
11101        impl Render for TestIpynbItemView {
11102            fn render(
11103                &mut self,
11104                _window: &mut Window,
11105                _cx: &mut Context<Self>,
11106            ) -> impl IntoElement {
11107                Empty
11108            }
11109        }
11110
11111        impl ProjectItem for TestIpynbItemView {
11112            type Item = TestIpynbItem;
11113
11114            fn for_project_item(
11115                _project: Entity<Project>,
11116                _pane: Option<&Pane>,
11117                _item: Entity<Self::Item>,
11118                _: &mut Window,
11119                cx: &mut Context<Self>,
11120            ) -> Self
11121            where
11122                Self: Sized,
11123            {
11124                Self {
11125                    focus_handle: cx.focus_handle(),
11126                }
11127            }
11128        }
11129
11130        struct TestAlternatePngItemView {
11131            focus_handle: FocusHandle,
11132        }
11133
11134        impl Item for TestAlternatePngItemView {
11135            type Event = ();
11136            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
11137                "".into()
11138            }
11139        }
11140
11141        impl EventEmitter<()> for TestAlternatePngItemView {}
11142        impl Focusable for TestAlternatePngItemView {
11143            fn focus_handle(&self, _cx: &App) -> FocusHandle {
11144                self.focus_handle.clone()
11145            }
11146        }
11147
11148        impl Render for TestAlternatePngItemView {
11149            fn render(
11150                &mut self,
11151                _window: &mut Window,
11152                _cx: &mut Context<Self>,
11153            ) -> impl IntoElement {
11154                Empty
11155            }
11156        }
11157
11158        impl ProjectItem for TestAlternatePngItemView {
11159            type Item = TestPngItem;
11160
11161            fn for_project_item(
11162                _project: Entity<Project>,
11163                _pane: Option<&Pane>,
11164                _item: Entity<Self::Item>,
11165                _: &mut Window,
11166                cx: &mut Context<Self>,
11167            ) -> Self
11168            where
11169                Self: Sized,
11170            {
11171                Self {
11172                    focus_handle: cx.focus_handle(),
11173                }
11174            }
11175        }
11176
11177        #[gpui::test]
11178        async fn test_register_project_item(cx: &mut TestAppContext) {
11179            init_test(cx);
11180
11181            cx.update(|cx| {
11182                register_project_item::<TestPngItemView>(cx);
11183                register_project_item::<TestIpynbItemView>(cx);
11184            });
11185
11186            let fs = FakeFs::new(cx.executor());
11187            fs.insert_tree(
11188                "/root1",
11189                json!({
11190                    "one.png": "BINARYDATAHERE",
11191                    "two.ipynb": "{ totally a notebook }",
11192                    "three.txt": "editing text, sure why not?"
11193                }),
11194            )
11195            .await;
11196
11197            let project = Project::test(fs, ["root1".as_ref()], cx).await;
11198            let (workspace, cx) =
11199                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
11200
11201            let worktree_id = project.update(cx, |project, cx| {
11202                project.worktrees(cx).next().unwrap().read(cx).id()
11203            });
11204
11205            let handle = workspace
11206                .update_in(cx, |workspace, window, cx| {
11207                    let project_path = (worktree_id, rel_path("one.png"));
11208                    workspace.open_path(project_path, None, true, window, cx)
11209                })
11210                .await
11211                .unwrap();
11212
11213            // Now we can check if the handle we got back errored or not
11214            assert_eq!(
11215                handle.to_any().entity_type(),
11216                TypeId::of::<TestPngItemView>()
11217            );
11218
11219            let handle = workspace
11220                .update_in(cx, |workspace, window, cx| {
11221                    let project_path = (worktree_id, rel_path("two.ipynb"));
11222                    workspace.open_path(project_path, None, true, window, cx)
11223                })
11224                .await
11225                .unwrap();
11226
11227            assert_eq!(
11228                handle.to_any().entity_type(),
11229                TypeId::of::<TestIpynbItemView>()
11230            );
11231
11232            let handle = workspace
11233                .update_in(cx, |workspace, window, cx| {
11234                    let project_path = (worktree_id, rel_path("three.txt"));
11235                    workspace.open_path(project_path, None, true, window, cx)
11236                })
11237                .await;
11238            assert!(handle.is_err());
11239        }
11240
11241        #[gpui::test]
11242        async fn test_register_project_item_two_enter_one_leaves(cx: &mut TestAppContext) {
11243            init_test(cx);
11244
11245            cx.update(|cx| {
11246                register_project_item::<TestPngItemView>(cx);
11247                register_project_item::<TestAlternatePngItemView>(cx);
11248            });
11249
11250            let fs = FakeFs::new(cx.executor());
11251            fs.insert_tree(
11252                "/root1",
11253                json!({
11254                    "one.png": "BINARYDATAHERE",
11255                    "two.ipynb": "{ totally a notebook }",
11256                    "three.txt": "editing text, sure why not?"
11257                }),
11258            )
11259            .await;
11260            let project = Project::test(fs, ["root1".as_ref()], cx).await;
11261            let (workspace, cx) =
11262                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
11263            let worktree_id = project.update(cx, |project, cx| {
11264                project.worktrees(cx).next().unwrap().read(cx).id()
11265            });
11266
11267            let handle = workspace
11268                .update_in(cx, |workspace, window, cx| {
11269                    let project_path = (worktree_id, rel_path("one.png"));
11270                    workspace.open_path(project_path, None, true, window, cx)
11271                })
11272                .await
11273                .unwrap();
11274
11275            // This _must_ be the second item registered
11276            assert_eq!(
11277                handle.to_any().entity_type(),
11278                TypeId::of::<TestAlternatePngItemView>()
11279            );
11280
11281            let handle = workspace
11282                .update_in(cx, |workspace, window, cx| {
11283                    let project_path = (worktree_id, rel_path("three.txt"));
11284                    workspace.open_path(project_path, None, true, window, cx)
11285                })
11286                .await;
11287            assert!(handle.is_err());
11288        }
11289    }
11290
11291    #[gpui::test]
11292    async fn test_status_bar_visibility(cx: &mut TestAppContext) {
11293        init_test(cx);
11294
11295        let fs = FakeFs::new(cx.executor());
11296        let project = Project::test(fs, [], cx).await;
11297        let (workspace, _cx) =
11298            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
11299
11300        // Test with status bar shown (default)
11301        workspace.read_with(cx, |workspace, cx| {
11302            let visible = workspace.status_bar_visible(cx);
11303            assert!(visible, "Status bar should be visible by default");
11304        });
11305
11306        // Test with status bar hidden
11307        cx.update_global(|store: &mut SettingsStore, cx| {
11308            store.update_user_settings(cx, |settings| {
11309                settings.status_bar.get_or_insert_default().show = Some(false);
11310            });
11311        });
11312
11313        workspace.read_with(cx, |workspace, cx| {
11314            let visible = workspace.status_bar_visible(cx);
11315            assert!(!visible, "Status bar should be hidden when show is false");
11316        });
11317
11318        // Test with status bar shown explicitly
11319        cx.update_global(|store: &mut SettingsStore, cx| {
11320            store.update_user_settings(cx, |settings| {
11321                settings.status_bar.get_or_insert_default().show = Some(true);
11322            });
11323        });
11324
11325        workspace.read_with(cx, |workspace, cx| {
11326            let visible = workspace.status_bar_visible(cx);
11327            assert!(visible, "Status bar should be visible when show is true");
11328        });
11329    }
11330
11331    fn pane_items_paths(pane: &Entity<Pane>, cx: &App) -> Vec<String> {
11332        pane.read(cx)
11333            .items()
11334            .flat_map(|item| {
11335                item.project_paths(cx)
11336                    .into_iter()
11337                    .map(|path| path.path.display(PathStyle::local()).into_owned())
11338            })
11339            .collect()
11340    }
11341
11342    pub fn init_test(cx: &mut TestAppContext) {
11343        cx.update(|cx| {
11344            let settings_store = SettingsStore::test(cx);
11345            cx.set_global(settings_store);
11346            theme::init(theme::LoadThemes::JustBase, cx);
11347        });
11348    }
11349
11350    fn dirty_project_item(id: u64, path: &str, cx: &mut App) -> Entity<TestProjectItem> {
11351        let item = TestProjectItem::new(id, path, cx);
11352        item.update(cx, |item, _| {
11353            item.is_dirty = true;
11354        });
11355        item
11356    }
11357}