workspace.rs

    1pub mod dock;
    2pub mod history_manager;
    3pub mod item;
    4mod modal_layer;
    5pub mod notifications;
    6pub mod pane;
    7pub mod pane_group;
    8mod persistence;
    9pub mod searchable;
   10pub mod shared_screen;
   11mod status_bar;
   12pub mod tasks;
   13mod theme_preview;
   14mod toast_layer;
   15mod toolbar;
   16mod workspace_settings;
   17
   18pub use crate::notifications::NotificationFrame;
   19pub use dock::Panel;
   20pub use toast_layer::{ToastAction, ToastLayer, ToastView};
   21
   22use anyhow::{Context as _, Result, anyhow};
   23use call::{ActiveCall, call_settings::CallSettings};
   24use client::{
   25    ChannelId, Client, ErrorExt, Status, TypedEnvelope, UserStore,
   26    proto::{self, ErrorCode, PanelId, PeerId},
   27};
   28use collections::{HashMap, HashSet, hash_map};
   29use dock::{Dock, DockPosition, PanelButtons, PanelHandle, RESIZE_HANDLE_SIZE};
   30use futures::{
   31    Future, FutureExt, StreamExt,
   32    channel::{
   33        mpsc::{self, UnboundedReceiver, UnboundedSender},
   34        oneshot,
   35    },
   36    future::{Shared, try_join_all},
   37};
   38use gpui::{
   39    Action, AnyEntity, AnyView, AnyWeakView, App, AsyncApp, AsyncWindowContext, Bounds, Context,
   40    CursorStyle, Decorations, DragMoveEvent, Entity, EntityId, EventEmitter, FocusHandle,
   41    Focusable, Global, HitboxBehavior, Hsla, KeyContext, Keystroke, ManagedView, MouseButton,
   42    PathPromptOptions, Point, PromptLevel, Render, ResizeEdge, Size, Stateful, Subscription, Task,
   43    Tiling, WeakEntity, WindowBounds, WindowHandle, WindowId, WindowOptions, actions, canvas,
   44    point, relative, size, transparent_black,
   45};
   46pub use history_manager::*;
   47pub use item::{
   48    FollowableItem, FollowableItemHandle, Item, ItemHandle, ItemSettings, PreviewTabsSettings,
   49    ProjectItem, SerializableItem, SerializableItemHandle, WeakItemHandle,
   50};
   51use itertools::Itertools;
   52use language::{
   53    Buffer, LanguageRegistry, Rope,
   54    language_settings::{AllLanguageSettings, all_language_settings},
   55};
   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::*;
   64use persistence::{
   65    DB, SerializedWindowBounds,
   66    model::{SerializedSshProject, SerializedWorkspace},
   67};
   68pub use persistence::{
   69    DB as WORKSPACE_DB, WorkspaceDb, delete_unloaded_items,
   70    model::{ItemId, LocalPaths, SerializedWorkspaceLocation},
   71};
   72use postage::stream::Stream;
   73use project::{
   74    DirectoryLister, Project, ProjectEntryId, ProjectPath, ResolvedPath, Worktree, WorktreeId,
   75    debugger::{breakpoint_store::BreakpointStoreEvent, session::ThreadStatus},
   76};
   77use remote::{SshClientDelegate, SshConnectionOptions, ssh_session::ConnectionIdentifier};
   78use schemars::JsonSchema;
   79use serde::Deserialize;
   80use session::AppSession;
   81use settings::{Settings, update_settings_file};
   82use shared_screen::SharedScreen;
   83use sqlez::{
   84    bindable::{Bind, Column, StaticColumnCount},
   85    statement::Statement,
   86};
   87use status_bar::StatusBar;
   88pub use status_bar::StatusItemView;
   89use std::{
   90    any::TypeId,
   91    borrow::Cow,
   92    cell::RefCell,
   93    cmp,
   94    collections::{VecDeque, hash_map::DefaultHasher},
   95    env,
   96    hash::{Hash, Hasher},
   97    path::{Path, PathBuf},
   98    process::ExitStatus,
   99    rc::Rc,
  100    sync::{Arc, LazyLock, Weak, atomic::AtomicUsize},
  101    time::Duration,
  102};
  103use task::{DebugScenario, SpawnInTerminal, TaskContext};
  104use theme::{ActiveTheme, SystemAppearance, ThemeSettings};
  105pub use toolbar::{Toolbar, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView};
  106pub use ui;
  107use ui::{Window, prelude::*};
  108use util::{ResultExt, TryFutureExt, paths::SanitizedPath, serde::default_true};
  109use uuid::Uuid;
  110pub use workspace_settings::{
  111    AutosaveSetting, BottomDockLayout, RestoreOnStartupBehavior, TabBarSettings, WorkspaceSettings,
  112};
  113use zed_actions::{Spawn, feedback::FileBugReport};
  114
  115use crate::notifications::NotificationId;
  116use crate::persistence::{
  117    SerializedAxis,
  118    model::{DockData, DockStructure, SerializedItem, SerializedPane, SerializedPaneGroup},
  119};
  120
  121pub const SERIALIZATION_THROTTLE_TIME: Duration = Duration::from_millis(200);
  122
  123static ZED_WINDOW_SIZE: LazyLock<Option<Size<Pixels>>> = LazyLock::new(|| {
  124    env::var("ZED_WINDOW_SIZE")
  125        .ok()
  126        .as_deref()
  127        .and_then(parse_pixel_size_env_var)
  128});
  129
  130static ZED_WINDOW_POSITION: LazyLock<Option<Point<Pixels>>> = LazyLock::new(|| {
  131    env::var("ZED_WINDOW_POSITION")
  132        .ok()
  133        .as_deref()
  134        .and_then(parse_pixel_position_env_var)
  135});
  136
  137pub trait TerminalProvider {
  138    fn spawn(
  139        &self,
  140        task: SpawnInTerminal,
  141        window: &mut Window,
  142        cx: &mut App,
  143    ) -> Task<Option<Result<ExitStatus>>>;
  144}
  145
  146pub trait DebuggerProvider {
  147    // `active_buffer` is used to resolve build task's name against language-specific tasks.
  148    fn start_session(
  149        &self,
  150        definition: DebugScenario,
  151        task_context: TaskContext,
  152        active_buffer: Option<Entity<Buffer>>,
  153        worktree_id: Option<WorktreeId>,
  154        window: &mut Window,
  155        cx: &mut App,
  156    );
  157
  158    fn spawn_task_or_modal(
  159        &self,
  160        workspace: &mut Workspace,
  161        action: &Spawn,
  162        window: &mut Window,
  163        cx: &mut Context<Workspace>,
  164    );
  165
  166    fn task_scheduled(&self, cx: &mut App);
  167    fn debug_scenario_scheduled(&self, cx: &mut App);
  168    fn debug_scenario_scheduled_last(&self, cx: &App) -> bool;
  169
  170    fn active_thread_state(&self, cx: &App) -> Option<ThreadStatus>;
  171}
  172
  173actions!(
  174    workspace,
  175    [
  176        /// Activates the next pane in the workspace.
  177        ActivateNextPane,
  178        /// Activates the previous pane in the workspace.
  179        ActivatePreviousPane,
  180        /// Switches to the next window.
  181        ActivateNextWindow,
  182        /// Switches to the previous window.
  183        ActivatePreviousWindow,
  184        /// Adds a folder to the current project.
  185        AddFolderToProject,
  186        /// Clears all notifications.
  187        ClearAllNotifications,
  188        /// Closes the active dock.
  189        CloseActiveDock,
  190        /// Closes all docks.
  191        CloseAllDocks,
  192        /// Closes the current window.
  193        CloseWindow,
  194        /// Opens the feedback dialog.
  195        Feedback,
  196        /// Follows the next collaborator in the session.
  197        FollowNextCollaborator,
  198        /// Moves the focused panel to the next position.
  199        MoveFocusedPanelToNextPosition,
  200        /// Opens a new terminal in the center.
  201        NewCenterTerminal,
  202        /// Creates a new file.
  203        NewFile,
  204        /// Creates a new file in a vertical split.
  205        NewFileSplitVertical,
  206        /// Creates a new file in a horizontal split.
  207        NewFileSplitHorizontal,
  208        /// Opens a new search.
  209        NewSearch,
  210        /// Opens a new terminal.
  211        NewTerminal,
  212        /// Opens a new window.
  213        NewWindow,
  214        /// Opens a file or directory.
  215        Open,
  216        /// Opens multiple files.
  217        OpenFiles,
  218        /// Opens the current location in terminal.
  219        OpenInTerminal,
  220        /// Opens the component preview.
  221        OpenComponentPreview,
  222        /// Reloads the active item.
  223        ReloadActiveItem,
  224        /// Resets the active dock to its default size.
  225        ResetActiveDockSize,
  226        /// Resets all open docks to their default sizes.
  227        ResetOpenDocksSize,
  228        /// Reloads the application
  229        Reload,
  230        /// Saves the current file with a new name.
  231        SaveAs,
  232        /// Saves without formatting.
  233        SaveWithoutFormat,
  234        /// Shuts down all debug adapters.
  235        ShutdownDebugAdapters,
  236        /// Suppresses the current notification.
  237        SuppressNotification,
  238        /// Toggles the bottom dock.
  239        ToggleBottomDock,
  240        /// Toggles centered layout mode.
  241        ToggleCenteredLayout,
  242        /// Toggles edit prediction feature globally for all files.
  243        ToggleEditPrediction,
  244        /// Toggles the left dock.
  245        ToggleLeftDock,
  246        /// Toggles the right dock.
  247        ToggleRightDock,
  248        /// Toggles zoom on the active pane.
  249        ToggleZoom,
  250        /// Stops following a collaborator.
  251        Unfollow,
  252        /// Restores the banner.
  253        RestoreBanner,
  254        /// Toggles expansion of the selected item.
  255        ToggleExpandItem,
  256    ]
  257);
  258
  259/// Activates a specific pane by its index.
  260#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  261#[action(namespace = workspace)]
  262pub struct ActivatePane(pub usize);
  263
  264/// Moves an item to a specific pane by index.
  265#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  266#[action(namespace = workspace)]
  267#[serde(deny_unknown_fields)]
  268pub struct MoveItemToPane {
  269    #[serde(default = "default_1")]
  270    pub destination: usize,
  271    #[serde(default = "default_true")]
  272    pub focus: bool,
  273    #[serde(default)]
  274    pub clone: bool,
  275}
  276
  277fn default_1() -> usize {
  278    1
  279}
  280
  281/// Moves an item to a pane in the specified direction.
  282#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  283#[action(namespace = workspace)]
  284#[serde(deny_unknown_fields)]
  285pub struct MoveItemToPaneInDirection {
  286    #[serde(default = "default_right")]
  287    pub direction: SplitDirection,
  288    #[serde(default = "default_true")]
  289    pub focus: bool,
  290    #[serde(default)]
  291    pub clone: bool,
  292}
  293
  294fn default_right() -> SplitDirection {
  295    SplitDirection::Right
  296}
  297
  298/// Saves all open files in the workspace.
  299#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  300#[action(namespace = workspace)]
  301#[serde(deny_unknown_fields)]
  302pub struct SaveAll {
  303    #[serde(default)]
  304    pub save_intent: Option<SaveIntent>,
  305}
  306
  307/// Saves the current file with the specified options.
  308#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  309#[action(namespace = workspace)]
  310#[serde(deny_unknown_fields)]
  311pub struct Save {
  312    #[serde(default)]
  313    pub save_intent: Option<SaveIntent>,
  314}
  315
  316/// Closes all items and panes in the workspace.
  317#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  318#[action(namespace = workspace)]
  319#[serde(deny_unknown_fields)]
  320pub struct CloseAllItemsAndPanes {
  321    #[serde(default)]
  322    pub save_intent: Option<SaveIntent>,
  323}
  324
  325/// Closes all inactive tabs and panes in the workspace.
  326#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  327#[action(namespace = workspace)]
  328#[serde(deny_unknown_fields)]
  329pub struct CloseInactiveTabsAndPanes {
  330    #[serde(default)]
  331    pub save_intent: Option<SaveIntent>,
  332}
  333
  334/// Sends a sequence of keystrokes to the active element.
  335#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  336#[action(namespace = workspace)]
  337pub struct SendKeystrokes(pub String);
  338
  339actions!(
  340    project_symbols,
  341    [
  342        /// Toggles the project symbols search.
  343        #[action(name = "Toggle")]
  344        ToggleProjectSymbols
  345    ]
  346);
  347
  348/// Toggles the file finder interface.
  349#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  350#[action(namespace = file_finder, name = "Toggle")]
  351#[serde(deny_unknown_fields)]
  352pub struct ToggleFileFinder {
  353    #[serde(default)]
  354    pub separate_history: bool,
  355}
  356
  357/// Increases size of a currently focused dock by a given amount of pixels.
  358#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  359#[action(namespace = workspace)]
  360#[serde(deny_unknown_fields)]
  361pub struct IncreaseActiveDockSize {
  362    /// For 0px parameter, uses UI font size value.
  363    #[serde(default)]
  364    pub px: u32,
  365}
  366
  367/// Decreases size of a currently focused dock by a given amount of pixels.
  368#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  369#[action(namespace = workspace)]
  370#[serde(deny_unknown_fields)]
  371pub struct DecreaseActiveDockSize {
  372    /// For 0px parameter, uses UI font size value.
  373    #[serde(default)]
  374    pub px: u32,
  375}
  376
  377/// Increases size of all currently visible docks uniformly, by a given amount of pixels.
  378#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  379#[action(namespace = workspace)]
  380#[serde(deny_unknown_fields)]
  381pub struct IncreaseOpenDocksSize {
  382    /// For 0px parameter, uses UI font size value.
  383    #[serde(default)]
  384    pub px: u32,
  385}
  386
  387/// Decreases size of all currently visible docks uniformly, by a given amount of pixels.
  388#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  389#[action(namespace = workspace)]
  390#[serde(deny_unknown_fields)]
  391pub struct DecreaseOpenDocksSize {
  392    /// For 0px parameter, uses UI font size value.
  393    #[serde(default)]
  394    pub px: u32,
  395}
  396
  397actions!(
  398    workspace,
  399    [
  400        /// Activates the pane to the left.
  401        ActivatePaneLeft,
  402        /// Activates the pane to the right.
  403        ActivatePaneRight,
  404        /// Activates the pane above.
  405        ActivatePaneUp,
  406        /// Activates the pane below.
  407        ActivatePaneDown,
  408        /// Swaps the current pane with the one to the left.
  409        SwapPaneLeft,
  410        /// Swaps the current pane with the one to the right.
  411        SwapPaneRight,
  412        /// Swaps the current pane with the one above.
  413        SwapPaneUp,
  414        /// Swaps the current pane with the one below.
  415        SwapPaneDown,
  416    ]
  417);
  418
  419#[derive(PartialEq, Eq, Debug)]
  420pub enum CloseIntent {
  421    /// Quit the program entirely.
  422    Quit,
  423    /// Close a window.
  424    CloseWindow,
  425    /// Replace the workspace in an existing window.
  426    ReplaceWindow,
  427}
  428
  429#[derive(Clone)]
  430pub struct Toast {
  431    id: NotificationId,
  432    msg: Cow<'static, str>,
  433    autohide: bool,
  434    on_click: Option<(Cow<'static, str>, Arc<dyn Fn(&mut Window, &mut App)>)>,
  435}
  436
  437impl Toast {
  438    pub fn new<I: Into<Cow<'static, str>>>(id: NotificationId, msg: I) -> Self {
  439        Toast {
  440            id,
  441            msg: msg.into(),
  442            on_click: None,
  443            autohide: false,
  444        }
  445    }
  446
  447    pub fn on_click<F, M>(mut self, message: M, on_click: F) -> Self
  448    where
  449        M: Into<Cow<'static, str>>,
  450        F: Fn(&mut Window, &mut App) + 'static,
  451    {
  452        self.on_click = Some((message.into(), Arc::new(on_click)));
  453        self
  454    }
  455
  456    pub fn autohide(mut self) -> Self {
  457        self.autohide = true;
  458        self
  459    }
  460}
  461
  462impl PartialEq for Toast {
  463    fn eq(&self, other: &Self) -> bool {
  464        self.id == other.id
  465            && self.msg == other.msg
  466            && self.on_click.is_some() == other.on_click.is_some()
  467    }
  468}
  469
  470/// Opens a new terminal with the specified working directory.
  471#[derive(Debug, Default, Clone, Deserialize, PartialEq, JsonSchema, Action)]
  472#[action(namespace = workspace)]
  473#[serde(deny_unknown_fields)]
  474pub struct OpenTerminal {
  475    pub working_directory: PathBuf,
  476}
  477
  478#[derive(Clone, Copy, Debug, Default, Hash, PartialEq, Eq, PartialOrd, Ord)]
  479pub struct WorkspaceId(i64);
  480
  481impl StaticColumnCount for WorkspaceId {}
  482impl Bind for WorkspaceId {
  483    fn bind(&self, statement: &Statement, start_index: i32) -> Result<i32> {
  484        self.0.bind(statement, start_index)
  485    }
  486}
  487impl Column for WorkspaceId {
  488    fn column(statement: &mut Statement, start_index: i32) -> Result<(Self, i32)> {
  489        i64::column(statement, start_index)
  490            .map(|(i, next_index)| (Self(i), next_index))
  491            .with_context(|| format!("Failed to read WorkspaceId at index {start_index}"))
  492    }
  493}
  494impl From<WorkspaceId> for i64 {
  495    fn from(val: WorkspaceId) -> Self {
  496        val.0
  497    }
  498}
  499
  500pub fn init_settings(cx: &mut App) {
  501    WorkspaceSettings::register(cx);
  502    ItemSettings::register(cx);
  503    PreviewTabsSettings::register(cx);
  504    TabBarSettings::register(cx);
  505}
  506
  507fn prompt_and_open_paths(app_state: Arc<AppState>, options: PathPromptOptions, cx: &mut App) {
  508    let paths = cx.prompt_for_paths(options);
  509    cx.spawn(
  510        async move |cx| match paths.await.anyhow().and_then(|res| res) {
  511            Ok(Some(paths)) => {
  512                cx.update(|cx| {
  513                    open_paths(&paths, app_state, OpenOptions::default(), cx).detach_and_log_err(cx)
  514                })
  515                .ok();
  516            }
  517            Ok(None) => {}
  518            Err(err) => {
  519                util::log_err(&err);
  520                cx.update(|cx| {
  521                    if let Some(workspace_window) = cx
  522                        .active_window()
  523                        .and_then(|window| window.downcast::<Workspace>())
  524                    {
  525                        workspace_window
  526                            .update(cx, |workspace, _, cx| {
  527                                workspace.show_portal_error(err.to_string(), cx);
  528                            })
  529                            .ok();
  530                    }
  531                })
  532                .ok();
  533            }
  534        },
  535    )
  536    .detach();
  537}
  538
  539pub fn init(app_state: Arc<AppState>, cx: &mut App) {
  540    init_settings(cx);
  541    component::init();
  542    theme_preview::init(cx);
  543    toast_layer::init(cx);
  544    history_manager::init(cx);
  545
  546    cx.on_action(|_: &CloseWindow, cx| Workspace::close_global(cx));
  547    cx.on_action(|_: &Reload, cx| reload(cx));
  548
  549    cx.on_action({
  550        let app_state = Arc::downgrade(&app_state);
  551        move |_: &Open, cx: &mut App| {
  552            if let Some(app_state) = app_state.upgrade() {
  553                prompt_and_open_paths(
  554                    app_state,
  555                    PathPromptOptions {
  556                        files: true,
  557                        directories: true,
  558                        multiple: true,
  559                        prompt: None,
  560                    },
  561                    cx,
  562                );
  563            }
  564        }
  565    });
  566    cx.on_action({
  567        let app_state = Arc::downgrade(&app_state);
  568        move |_: &OpenFiles, cx: &mut App| {
  569            let directories = cx.can_select_mixed_files_and_dirs();
  570            if let Some(app_state) = app_state.upgrade() {
  571                prompt_and_open_paths(
  572                    app_state,
  573                    PathPromptOptions {
  574                        files: true,
  575                        directories,
  576                        multiple: true,
  577                        prompt: None,
  578                    },
  579                    cx,
  580                );
  581            }
  582        }
  583    });
  584}
  585
  586type BuildProjectItemFn =
  587    fn(AnyEntity, Entity<Project>, Option<&Pane>, &mut Window, &mut App) -> Box<dyn ItemHandle>;
  588
  589type BuildProjectItemForPathFn =
  590    fn(
  591        &Entity<Project>,
  592        &ProjectPath,
  593        &mut Window,
  594        &mut App,
  595    ) -> Option<Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>>>;
  596
  597#[derive(Clone, Default)]
  598struct ProjectItemRegistry {
  599    build_project_item_fns_by_type: HashMap<TypeId, BuildProjectItemFn>,
  600    build_project_item_for_path_fns: Vec<BuildProjectItemForPathFn>,
  601}
  602
  603impl ProjectItemRegistry {
  604    fn register<T: ProjectItem>(&mut self) {
  605        self.build_project_item_fns_by_type.insert(
  606            TypeId::of::<T::Item>(),
  607            |item, project, pane, window, cx| {
  608                let item = item.downcast().unwrap();
  609                Box::new(cx.new(|cx| T::for_project_item(project, pane, item, window, cx)))
  610                    as Box<dyn ItemHandle>
  611            },
  612        );
  613        self.build_project_item_for_path_fns
  614            .push(|project, project_path, window, cx| {
  615                let project_item =
  616                    <T::Item as project::ProjectItem>::try_open(project, project_path, cx)?;
  617                let project = project.clone();
  618                Some(window.spawn(cx, async move |cx| {
  619                    let project_item = project_item.await?;
  620                    let project_entry_id: Option<ProjectEntryId> =
  621                        project_item.read_with(cx, project::ProjectItem::entry_id)?;
  622                    let build_workspace_item = Box::new(
  623                        |pane: &mut Pane, window: &mut Window, cx: &mut Context<Pane>| {
  624                            Box::new(cx.new(|cx| {
  625                                T::for_project_item(project, Some(pane), project_item, window, cx)
  626                            })) as Box<dyn ItemHandle>
  627                        },
  628                    ) as Box<_>;
  629                    Ok((project_entry_id, build_workspace_item))
  630                }))
  631            });
  632    }
  633
  634    fn open_path(
  635        &self,
  636        project: &Entity<Project>,
  637        path: &ProjectPath,
  638        window: &mut Window,
  639        cx: &mut App,
  640    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
  641        let Some(open_project_item) = self
  642            .build_project_item_for_path_fns
  643            .iter()
  644            .rev()
  645            .find_map(|open_project_item| open_project_item(project, path, window, cx))
  646        else {
  647            return Task::ready(Err(anyhow!("cannot open file {:?}", path.path)));
  648        };
  649        open_project_item
  650    }
  651
  652    fn build_item<T: project::ProjectItem>(
  653        &self,
  654        item: Entity<T>,
  655        project: Entity<Project>,
  656        pane: Option<&Pane>,
  657        window: &mut Window,
  658        cx: &mut App,
  659    ) -> Option<Box<dyn ItemHandle>> {
  660        let build = self
  661            .build_project_item_fns_by_type
  662            .get(&TypeId::of::<T>())?;
  663        Some(build(item.into_any(), project, pane, window, cx))
  664    }
  665}
  666
  667type WorkspaceItemBuilder =
  668    Box<dyn FnOnce(&mut Pane, &mut Window, &mut Context<Pane>) -> Box<dyn ItemHandle>>;
  669
  670impl Global for ProjectItemRegistry {}
  671
  672/// Registers a [ProjectItem] for the app. When opening a file, all the registered
  673/// items will get a chance to open the file, starting from the project item that
  674/// was added last.
  675pub fn register_project_item<I: ProjectItem>(cx: &mut App) {
  676    cx.default_global::<ProjectItemRegistry>().register::<I>();
  677}
  678
  679#[derive(Default)]
  680pub struct FollowableViewRegistry(HashMap<TypeId, FollowableViewDescriptor>);
  681
  682struct FollowableViewDescriptor {
  683    from_state_proto: fn(
  684        Entity<Workspace>,
  685        ViewId,
  686        &mut Option<proto::view::Variant>,
  687        &mut Window,
  688        &mut App,
  689    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>>,
  690    to_followable_view: fn(&AnyView) -> Box<dyn FollowableItemHandle>,
  691}
  692
  693impl Global for FollowableViewRegistry {}
  694
  695impl FollowableViewRegistry {
  696    pub fn register<I: FollowableItem>(cx: &mut App) {
  697        cx.default_global::<Self>().0.insert(
  698            TypeId::of::<I>(),
  699            FollowableViewDescriptor {
  700                from_state_proto: |workspace, id, state, window, cx| {
  701                    I::from_state_proto(workspace, id, state, window, cx).map(|task| {
  702                        cx.foreground_executor()
  703                            .spawn(async move { Ok(Box::new(task.await?) as Box<_>) })
  704                    })
  705                },
  706                to_followable_view: |view| Box::new(view.clone().downcast::<I>().unwrap()),
  707            },
  708        );
  709    }
  710
  711    pub fn from_state_proto(
  712        workspace: Entity<Workspace>,
  713        view_id: ViewId,
  714        mut state: Option<proto::view::Variant>,
  715        window: &mut Window,
  716        cx: &mut App,
  717    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>> {
  718        cx.update_default_global(|this: &mut Self, cx| {
  719            this.0.values().find_map(|descriptor| {
  720                (descriptor.from_state_proto)(workspace.clone(), view_id, &mut state, window, cx)
  721            })
  722        })
  723    }
  724
  725    pub fn to_followable_view(
  726        view: impl Into<AnyView>,
  727        cx: &App,
  728    ) -> Option<Box<dyn FollowableItemHandle>> {
  729        let this = cx.try_global::<Self>()?;
  730        let view = view.into();
  731        let descriptor = this.0.get(&view.entity_type())?;
  732        Some((descriptor.to_followable_view)(&view))
  733    }
  734}
  735
  736#[derive(Copy, Clone)]
  737struct SerializableItemDescriptor {
  738    deserialize: fn(
  739        Entity<Project>,
  740        WeakEntity<Workspace>,
  741        WorkspaceId,
  742        ItemId,
  743        &mut Window,
  744        &mut Context<Pane>,
  745    ) -> Task<Result<Box<dyn ItemHandle>>>,
  746    cleanup: fn(WorkspaceId, Vec<ItemId>, &mut Window, &mut App) -> Task<Result<()>>,
  747    view_to_serializable_item: fn(AnyView) -> Box<dyn SerializableItemHandle>,
  748}
  749
  750#[derive(Default)]
  751struct SerializableItemRegistry {
  752    descriptors_by_kind: HashMap<Arc<str>, SerializableItemDescriptor>,
  753    descriptors_by_type: HashMap<TypeId, SerializableItemDescriptor>,
  754}
  755
  756impl Global for SerializableItemRegistry {}
  757
  758impl SerializableItemRegistry {
  759    fn deserialize(
  760        item_kind: &str,
  761        project: Entity<Project>,
  762        workspace: WeakEntity<Workspace>,
  763        workspace_id: WorkspaceId,
  764        item_item: ItemId,
  765        window: &mut Window,
  766        cx: &mut Context<Pane>,
  767    ) -> Task<Result<Box<dyn ItemHandle>>> {
  768        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  769            return Task::ready(Err(anyhow!(
  770                "cannot deserialize {}, descriptor not found",
  771                item_kind
  772            )));
  773        };
  774
  775        (descriptor.deserialize)(project, workspace, workspace_id, item_item, window, cx)
  776    }
  777
  778    fn cleanup(
  779        item_kind: &str,
  780        workspace_id: WorkspaceId,
  781        loaded_items: Vec<ItemId>,
  782        window: &mut Window,
  783        cx: &mut App,
  784    ) -> Task<Result<()>> {
  785        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  786            return Task::ready(Err(anyhow!(
  787                "cannot cleanup {}, descriptor not found",
  788                item_kind
  789            )));
  790        };
  791
  792        (descriptor.cleanup)(workspace_id, loaded_items, window, cx)
  793    }
  794
  795    fn view_to_serializable_item_handle(
  796        view: AnyView,
  797        cx: &App,
  798    ) -> Option<Box<dyn SerializableItemHandle>> {
  799        let this = cx.try_global::<Self>()?;
  800        let descriptor = this.descriptors_by_type.get(&view.entity_type())?;
  801        Some((descriptor.view_to_serializable_item)(view))
  802    }
  803
  804    fn descriptor(item_kind: &str, cx: &App) -> Option<SerializableItemDescriptor> {
  805        let this = cx.try_global::<Self>()?;
  806        this.descriptors_by_kind.get(item_kind).copied()
  807    }
  808}
  809
  810pub fn register_serializable_item<I: SerializableItem>(cx: &mut App) {
  811    let serialized_item_kind = I::serialized_item_kind();
  812
  813    let registry = cx.default_global::<SerializableItemRegistry>();
  814    let descriptor = SerializableItemDescriptor {
  815        deserialize: |project, workspace, workspace_id, item_id, window, cx| {
  816            let task = I::deserialize(project, workspace, workspace_id, item_id, window, cx);
  817            cx.foreground_executor()
  818                .spawn(async { Ok(Box::new(task.await?) as Box<_>) })
  819        },
  820        cleanup: |workspace_id, loaded_items, window, cx| {
  821            I::cleanup(workspace_id, loaded_items, window, cx)
  822        },
  823        view_to_serializable_item: |view| Box::new(view.downcast::<I>().unwrap()),
  824    };
  825    registry
  826        .descriptors_by_kind
  827        .insert(Arc::from(serialized_item_kind), descriptor);
  828    registry
  829        .descriptors_by_type
  830        .insert(TypeId::of::<I>(), descriptor);
  831}
  832
  833pub struct AppState {
  834    pub languages: Arc<LanguageRegistry>,
  835    pub client: Arc<Client>,
  836    pub user_store: Entity<UserStore>,
  837    pub workspace_store: Entity<WorkspaceStore>,
  838    pub fs: Arc<dyn fs::Fs>,
  839    pub build_window_options: fn(Option<Uuid>, &mut App) -> WindowOptions,
  840    pub node_runtime: NodeRuntime,
  841    pub session: Entity<AppSession>,
  842}
  843
  844struct GlobalAppState(Weak<AppState>);
  845
  846impl Global for GlobalAppState {}
  847
  848pub struct WorkspaceStore {
  849    workspaces: HashSet<WindowHandle<Workspace>>,
  850    client: Arc<Client>,
  851    _subscriptions: Vec<client::Subscription>,
  852}
  853
  854#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq, PartialOrd, Ord)]
  855pub enum CollaboratorId {
  856    PeerId(PeerId),
  857    Agent,
  858}
  859
  860impl From<PeerId> for CollaboratorId {
  861    fn from(peer_id: PeerId) -> Self {
  862        CollaboratorId::PeerId(peer_id)
  863    }
  864}
  865
  866impl From<&PeerId> for CollaboratorId {
  867    fn from(peer_id: &PeerId) -> Self {
  868        CollaboratorId::PeerId(*peer_id)
  869    }
  870}
  871
  872#[derive(PartialEq, Eq, PartialOrd, Ord, Debug)]
  873struct Follower {
  874    project_id: Option<u64>,
  875    peer_id: PeerId,
  876}
  877
  878impl AppState {
  879    #[track_caller]
  880    pub fn global(cx: &App) -> Weak<Self> {
  881        cx.global::<GlobalAppState>().0.clone()
  882    }
  883    pub fn try_global(cx: &App) -> Option<Weak<Self>> {
  884        cx.try_global::<GlobalAppState>()
  885            .map(|state| state.0.clone())
  886    }
  887    pub fn set_global(state: Weak<AppState>, cx: &mut App) {
  888        cx.set_global(GlobalAppState(state));
  889    }
  890
  891    #[cfg(any(test, feature = "test-support"))]
  892    pub fn test(cx: &mut App) -> Arc<Self> {
  893        use node_runtime::NodeRuntime;
  894        use session::Session;
  895        use settings::SettingsStore;
  896
  897        if !cx.has_global::<SettingsStore>() {
  898            let settings_store = SettingsStore::test(cx);
  899            cx.set_global(settings_store);
  900        }
  901
  902        let fs = fs::FakeFs::new(cx.background_executor().clone());
  903        let languages = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));
  904        let clock = Arc::new(clock::FakeSystemClock::new());
  905        let http_client = http_client::FakeHttpClient::with_404_response();
  906        let client = Client::new(clock, http_client.clone(), cx);
  907        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
  908        let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
  909        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
  910
  911        theme::init(theme::LoadThemes::JustBase, cx);
  912        client::init(&client, cx);
  913        crate::init_settings(cx);
  914
  915        Arc::new(Self {
  916            client,
  917            fs,
  918            languages,
  919            user_store,
  920            workspace_store,
  921            node_runtime: NodeRuntime::unavailable(),
  922            build_window_options: |_, _| Default::default(),
  923            session,
  924        })
  925    }
  926}
  927
  928struct DelayedDebouncedEditAction {
  929    task: Option<Task<()>>,
  930    cancel_channel: Option<oneshot::Sender<()>>,
  931}
  932
  933impl DelayedDebouncedEditAction {
  934    fn new() -> DelayedDebouncedEditAction {
  935        DelayedDebouncedEditAction {
  936            task: None,
  937            cancel_channel: None,
  938        }
  939    }
  940
  941    fn fire_new<F>(
  942        &mut self,
  943        delay: Duration,
  944        window: &mut Window,
  945        cx: &mut Context<Workspace>,
  946        func: F,
  947    ) where
  948        F: 'static
  949            + Send
  950            + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> Task<Result<()>>,
  951    {
  952        if let Some(channel) = self.cancel_channel.take() {
  953            _ = channel.send(());
  954        }
  955
  956        let (sender, mut receiver) = oneshot::channel::<()>();
  957        self.cancel_channel = Some(sender);
  958
  959        let previous_task = self.task.take();
  960        self.task = Some(cx.spawn_in(window, async move |workspace, cx| {
  961            let mut timer = cx.background_executor().timer(delay).fuse();
  962            if let Some(previous_task) = previous_task {
  963                previous_task.await;
  964            }
  965
  966            futures::select_biased! {
  967                _ = receiver => return,
  968                    _ = timer => {}
  969            }
  970
  971            if let Some(result) = workspace
  972                .update_in(cx, |workspace, window, cx| (func)(workspace, window, cx))
  973                .log_err()
  974            {
  975                result.await.log_err();
  976            }
  977        }));
  978    }
  979}
  980
  981pub enum Event {
  982    PaneAdded(Entity<Pane>),
  983    PaneRemoved,
  984    ItemAdded {
  985        item: Box<dyn ItemHandle>,
  986    },
  987    ItemRemoved,
  988    ActiveItemChanged,
  989    UserSavedItem {
  990        pane: WeakEntity<Pane>,
  991        item: Box<dyn WeakItemHandle>,
  992        save_intent: SaveIntent,
  993    },
  994    ContactRequestedJoin(u64),
  995    WorkspaceCreated(WeakEntity<Workspace>),
  996    OpenBundledFile {
  997        text: Cow<'static, str>,
  998        title: &'static str,
  999        language: &'static str,
 1000    },
 1001    ZoomChanged,
 1002    ModalOpened,
 1003    ClearActivityIndicator,
 1004}
 1005
 1006#[derive(Debug)]
 1007pub enum OpenVisible {
 1008    All,
 1009    None,
 1010    OnlyFiles,
 1011    OnlyDirectories,
 1012}
 1013
 1014enum WorkspaceLocation {
 1015    // Valid local paths or SSH project to serialize
 1016    Location(SerializedWorkspaceLocation),
 1017    // No valid location found hence clear session id
 1018    DetachFromSession,
 1019    // No valid location found to serialize
 1020    None,
 1021}
 1022
 1023type PromptForNewPath = Box<
 1024    dyn Fn(
 1025        &mut Workspace,
 1026        DirectoryLister,
 1027        &mut Window,
 1028        &mut Context<Workspace>,
 1029    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1030>;
 1031
 1032type PromptForOpenPath = Box<
 1033    dyn Fn(
 1034        &mut Workspace,
 1035        DirectoryLister,
 1036        &mut Window,
 1037        &mut Context<Workspace>,
 1038    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1039>;
 1040
 1041#[derive(Default)]
 1042struct DispatchingKeystrokes {
 1043    dispatched: HashSet<Vec<Keystroke>>,
 1044    queue: VecDeque<Keystroke>,
 1045    task: Option<Shared<Task<()>>>,
 1046}
 1047
 1048/// Collects everything project-related for a certain window opened.
 1049/// In some way, is a counterpart of a window, as the [`WindowHandle`] could be downcast into `Workspace`.
 1050///
 1051/// A `Workspace` usually consists of 1 or more projects, a central pane group, 3 docks and a status bar.
 1052/// The `Workspace` owns everybody's state and serves as a default, "global context",
 1053/// that can be used to register a global action to be triggered from any place in the window.
 1054pub struct Workspace {
 1055    weak_self: WeakEntity<Self>,
 1056    workspace_actions: Vec<Box<dyn Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div>>,
 1057    zoomed: Option<AnyWeakView>,
 1058    previous_dock_drag_coordinates: Option<Point<Pixels>>,
 1059    zoomed_position: Option<DockPosition>,
 1060    center: PaneGroup,
 1061    left_dock: Entity<Dock>,
 1062    bottom_dock: Entity<Dock>,
 1063    right_dock: Entity<Dock>,
 1064    panes: Vec<Entity<Pane>>,
 1065    panes_by_item: HashMap<EntityId, WeakEntity<Pane>>,
 1066    active_pane: Entity<Pane>,
 1067    last_active_center_pane: Option<WeakEntity<Pane>>,
 1068    last_active_view_id: Option<proto::ViewId>,
 1069    status_bar: Entity<StatusBar>,
 1070    modal_layer: Entity<ModalLayer>,
 1071    toast_layer: Entity<ToastLayer>,
 1072    titlebar_item: Option<AnyView>,
 1073    notifications: Notifications,
 1074    suppressed_notifications: HashSet<NotificationId>,
 1075    project: Entity<Project>,
 1076    follower_states: HashMap<CollaboratorId, FollowerState>,
 1077    last_leaders_by_pane: HashMap<WeakEntity<Pane>, CollaboratorId>,
 1078    window_edited: bool,
 1079    last_window_title: Option<String>,
 1080    dirty_items: HashMap<EntityId, Subscription>,
 1081    active_call: Option<(Entity<ActiveCall>, Vec<Subscription>)>,
 1082    leader_updates_tx: mpsc::UnboundedSender<(PeerId, proto::UpdateFollowers)>,
 1083    database_id: Option<WorkspaceId>,
 1084    app_state: Arc<AppState>,
 1085    dispatching_keystrokes: Rc<RefCell<DispatchingKeystrokes>>,
 1086    _subscriptions: Vec<Subscription>,
 1087    _apply_leader_updates: Task<Result<()>>,
 1088    _observe_current_user: Task<Result<()>>,
 1089    _schedule_serialize_workspace: Option<Task<()>>,
 1090    _schedule_serialize_ssh_paths: Option<Task<()>>,
 1091    pane_history_timestamp: Arc<AtomicUsize>,
 1092    bounds: Bounds<Pixels>,
 1093    pub centered_layout: bool,
 1094    bounds_save_task_queued: Option<Task<()>>,
 1095    on_prompt_for_new_path: Option<PromptForNewPath>,
 1096    on_prompt_for_open_path: Option<PromptForOpenPath>,
 1097    terminal_provider: Option<Box<dyn TerminalProvider>>,
 1098    debugger_provider: Option<Arc<dyn DebuggerProvider>>,
 1099    serializable_items_tx: UnboundedSender<Box<dyn SerializableItemHandle>>,
 1100    serialized_ssh_project: Option<SerializedSshProject>,
 1101    _items_serializer: Task<Result<()>>,
 1102    session_id: Option<String>,
 1103    scheduled_tasks: Vec<Task<()>>,
 1104}
 1105
 1106impl EventEmitter<Event> for Workspace {}
 1107
 1108#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
 1109pub struct ViewId {
 1110    pub creator: CollaboratorId,
 1111    pub id: u64,
 1112}
 1113
 1114pub struct FollowerState {
 1115    center_pane: Entity<Pane>,
 1116    dock_pane: Option<Entity<Pane>>,
 1117    active_view_id: Option<ViewId>,
 1118    items_by_leader_view_id: HashMap<ViewId, FollowerView>,
 1119}
 1120
 1121struct FollowerView {
 1122    view: Box<dyn FollowableItemHandle>,
 1123    location: Option<proto::PanelId>,
 1124}
 1125
 1126impl Workspace {
 1127    const DEFAULT_PADDING: f32 = 0.2;
 1128    const MAX_PADDING: f32 = 0.4;
 1129
 1130    pub fn new(
 1131        workspace_id: Option<WorkspaceId>,
 1132        project: Entity<Project>,
 1133        app_state: Arc<AppState>,
 1134        window: &mut Window,
 1135        cx: &mut Context<Self>,
 1136    ) -> Self {
 1137        cx.subscribe_in(&project, window, move |this, _, event, window, cx| {
 1138            match event {
 1139                project::Event::RemoteIdChanged(_) => {
 1140                    this.update_window_title(window, cx);
 1141                }
 1142
 1143                project::Event::CollaboratorLeft(peer_id) => {
 1144                    this.collaborator_left(*peer_id, window, cx);
 1145                }
 1146
 1147                project::Event::WorktreeRemoved(_) | project::Event::WorktreeAdded(_) => {
 1148                    this.update_window_title(window, cx);
 1149                    this.update_ssh_paths(cx);
 1150                    this.serialize_ssh_paths(window, cx);
 1151                    this.serialize_workspace(window, cx);
 1152                    // This event could be triggered by `AddFolderToProject` or `RemoveFromProject`.
 1153                    this.update_history(cx);
 1154                }
 1155
 1156                project::Event::DisconnectedFromHost => {
 1157                    this.update_window_edited(window, cx);
 1158                    let leaders_to_unfollow =
 1159                        this.follower_states.keys().copied().collect::<Vec<_>>();
 1160                    for leader_id in leaders_to_unfollow {
 1161                        this.unfollow(leader_id, window, cx);
 1162                    }
 1163                }
 1164
 1165                project::Event::DisconnectedFromSshRemote => {
 1166                    this.update_window_edited(window, cx);
 1167                }
 1168
 1169                project::Event::Closed => {
 1170                    window.remove_window();
 1171                }
 1172
 1173                project::Event::DeletedEntry(_, entry_id) => {
 1174                    for pane in this.panes.iter() {
 1175                        pane.update(cx, |pane, cx| {
 1176                            pane.handle_deleted_project_item(*entry_id, window, cx)
 1177                        });
 1178                    }
 1179                }
 1180
 1181                project::Event::Toast {
 1182                    notification_id,
 1183                    message,
 1184                } => this.show_notification(
 1185                    NotificationId::named(notification_id.clone()),
 1186                    cx,
 1187                    |cx| cx.new(|cx| MessageNotification::new(message.clone(), cx)),
 1188                ),
 1189
 1190                project::Event::HideToast { notification_id } => {
 1191                    this.dismiss_notification(&NotificationId::named(notification_id.clone()), cx)
 1192                }
 1193
 1194                project::Event::LanguageServerPrompt(request) => {
 1195                    struct LanguageServerPrompt;
 1196
 1197                    let mut hasher = DefaultHasher::new();
 1198                    request.lsp_name.as_str().hash(&mut hasher);
 1199                    let id = hasher.finish();
 1200
 1201                    this.show_notification(
 1202                        NotificationId::composite::<LanguageServerPrompt>(id as usize),
 1203                        cx,
 1204                        |cx| {
 1205                            cx.new(|cx| {
 1206                                notifications::LanguageServerPrompt::new(request.clone(), cx)
 1207                            })
 1208                        },
 1209                    );
 1210                }
 1211
 1212                project::Event::AgentLocationChanged => {
 1213                    this.handle_agent_location_changed(window, cx)
 1214                }
 1215
 1216                _ => {}
 1217            }
 1218            cx.notify()
 1219        })
 1220        .detach();
 1221
 1222        cx.subscribe_in(
 1223            &project.read(cx).breakpoint_store(),
 1224            window,
 1225            |workspace, _, event, window, cx| match event {
 1226                BreakpointStoreEvent::BreakpointsUpdated(_, _)
 1227                | BreakpointStoreEvent::BreakpointsCleared(_) => {
 1228                    workspace.serialize_workspace(window, cx);
 1229                }
 1230                BreakpointStoreEvent::SetDebugLine | BreakpointStoreEvent::ClearDebugLines => {}
 1231            },
 1232        )
 1233        .detach();
 1234
 1235        cx.on_focus_lost(window, |this, window, cx| {
 1236            let focus_handle = this.focus_handle(cx);
 1237            window.focus(&focus_handle);
 1238        })
 1239        .detach();
 1240
 1241        let weak_handle = cx.entity().downgrade();
 1242        let pane_history_timestamp = Arc::new(AtomicUsize::new(0));
 1243
 1244        let center_pane = cx.new(|cx| {
 1245            let mut center_pane = Pane::new(
 1246                weak_handle.clone(),
 1247                project.clone(),
 1248                pane_history_timestamp.clone(),
 1249                None,
 1250                NewFile.boxed_clone(),
 1251                window,
 1252                cx,
 1253            );
 1254            center_pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 1255            center_pane
 1256        });
 1257        cx.subscribe_in(&center_pane, window, Self::handle_pane_event)
 1258            .detach();
 1259
 1260        window.focus(&center_pane.focus_handle(cx));
 1261
 1262        cx.emit(Event::PaneAdded(center_pane.clone()));
 1263
 1264        let window_handle = window.window_handle().downcast::<Workspace>().unwrap();
 1265        app_state.workspace_store.update(cx, |store, _| {
 1266            store.workspaces.insert(window_handle);
 1267        });
 1268
 1269        let mut current_user = app_state.user_store.read(cx).watch_current_user();
 1270        let mut connection_status = app_state.client.status();
 1271        let _observe_current_user = cx.spawn_in(window, async move |this, cx| {
 1272            current_user.next().await;
 1273            connection_status.next().await;
 1274            let mut stream =
 1275                Stream::map(current_user, drop).merge(Stream::map(connection_status, drop));
 1276
 1277            while stream.recv().await.is_some() {
 1278                this.update(cx, |_, cx| cx.notify())?;
 1279            }
 1280            anyhow::Ok(())
 1281        });
 1282
 1283        // All leader updates are enqueued and then processed in a single task, so
 1284        // that each asynchronous operation can be run in order.
 1285        let (leader_updates_tx, mut leader_updates_rx) =
 1286            mpsc::unbounded::<(PeerId, proto::UpdateFollowers)>();
 1287        let _apply_leader_updates = cx.spawn_in(window, async move |this, cx| {
 1288            while let Some((leader_id, update)) = leader_updates_rx.next().await {
 1289                Self::process_leader_update(&this, leader_id, update, cx)
 1290                    .await
 1291                    .log_err();
 1292            }
 1293
 1294            Ok(())
 1295        });
 1296
 1297        cx.emit(Event::WorkspaceCreated(weak_handle.clone()));
 1298        let modal_layer = cx.new(|_| ModalLayer::new());
 1299        let toast_layer = cx.new(|_| ToastLayer::new());
 1300        cx.subscribe(
 1301            &modal_layer,
 1302            |_, _, _: &modal_layer::ModalOpenedEvent, cx| {
 1303                cx.emit(Event::ModalOpened);
 1304            },
 1305        )
 1306        .detach();
 1307
 1308        let left_dock = Dock::new(DockPosition::Left, modal_layer.clone(), window, cx);
 1309        let bottom_dock = Dock::new(DockPosition::Bottom, modal_layer.clone(), window, cx);
 1310        let right_dock = Dock::new(DockPosition::Right, modal_layer.clone(), window, cx);
 1311        let left_dock_buttons = cx.new(|cx| PanelButtons::new(left_dock.clone(), cx));
 1312        let bottom_dock_buttons = cx.new(|cx| PanelButtons::new(bottom_dock.clone(), cx));
 1313        let right_dock_buttons = cx.new(|cx| PanelButtons::new(right_dock.clone(), cx));
 1314        let status_bar = cx.new(|cx| {
 1315            let mut status_bar = StatusBar::new(&center_pane.clone(), window, cx);
 1316            status_bar.add_left_item(left_dock_buttons, window, cx);
 1317            status_bar.add_right_item(right_dock_buttons, window, cx);
 1318            status_bar.add_right_item(bottom_dock_buttons, window, cx);
 1319            status_bar
 1320        });
 1321
 1322        let session_id = app_state.session.read(cx).id().to_owned();
 1323
 1324        let mut active_call = None;
 1325        if let Some(call) = ActiveCall::try_global(cx) {
 1326            let call = call.clone();
 1327            let subscriptions = vec![cx.subscribe_in(&call, window, Self::on_active_call_event)];
 1328            active_call = Some((call, subscriptions));
 1329        }
 1330
 1331        let (serializable_items_tx, serializable_items_rx) =
 1332            mpsc::unbounded::<Box<dyn SerializableItemHandle>>();
 1333        let _items_serializer = cx.spawn_in(window, async move |this, cx| {
 1334            Self::serialize_items(&this, serializable_items_rx, cx).await
 1335        });
 1336
 1337        let subscriptions = vec![
 1338            cx.observe_window_activation(window, Self::on_window_activation_changed),
 1339            cx.observe_window_bounds(window, move |this, window, cx| {
 1340                if this.bounds_save_task_queued.is_some() {
 1341                    return;
 1342                }
 1343                this.bounds_save_task_queued = Some(cx.spawn_in(window, async move |this, cx| {
 1344                    cx.background_executor()
 1345                        .timer(Duration::from_millis(100))
 1346                        .await;
 1347                    this.update_in(cx, |this, window, cx| {
 1348                        if let Some(display) = window.display(cx) {
 1349                            if let Ok(display_uuid) = display.uuid() {
 1350                                let window_bounds = window.inner_window_bounds();
 1351                                if let Some(database_id) = workspace_id {
 1352                                    cx.background_executor()
 1353                                        .spawn(DB.set_window_open_status(
 1354                                            database_id,
 1355                                            SerializedWindowBounds(window_bounds),
 1356                                            display_uuid,
 1357                                        ))
 1358                                        .detach_and_log_err(cx);
 1359                                }
 1360                            }
 1361                        }
 1362                        this.bounds_save_task_queued.take();
 1363                    })
 1364                    .ok();
 1365                }));
 1366                cx.notify();
 1367            }),
 1368            cx.observe_window_appearance(window, |_, window, cx| {
 1369                let window_appearance = window.appearance();
 1370
 1371                *SystemAppearance::global_mut(cx) = SystemAppearance(window_appearance.into());
 1372
 1373                ThemeSettings::reload_current_theme(cx);
 1374                ThemeSettings::reload_current_icon_theme(cx);
 1375            }),
 1376            cx.on_release(move |this, cx| {
 1377                this.app_state.workspace_store.update(cx, move |store, _| {
 1378                    store.workspaces.remove(&window_handle.clone());
 1379                })
 1380            }),
 1381        ];
 1382
 1383        cx.defer_in(window, |this, window, cx| {
 1384            this.update_window_title(window, cx);
 1385            this.show_initial_notifications(cx);
 1386        });
 1387        Workspace {
 1388            weak_self: weak_handle.clone(),
 1389            zoomed: None,
 1390            zoomed_position: None,
 1391            previous_dock_drag_coordinates: None,
 1392            center: PaneGroup::new(center_pane.clone()),
 1393            panes: vec![center_pane.clone()],
 1394            panes_by_item: Default::default(),
 1395            active_pane: center_pane.clone(),
 1396            last_active_center_pane: Some(center_pane.downgrade()),
 1397            last_active_view_id: None,
 1398            status_bar,
 1399            modal_layer,
 1400            toast_layer,
 1401            titlebar_item: None,
 1402            notifications: Notifications::default(),
 1403            suppressed_notifications: HashSet::default(),
 1404            left_dock,
 1405            bottom_dock,
 1406            right_dock,
 1407            project: project.clone(),
 1408            follower_states: Default::default(),
 1409            last_leaders_by_pane: Default::default(),
 1410            dispatching_keystrokes: Default::default(),
 1411            window_edited: false,
 1412            last_window_title: None,
 1413            dirty_items: Default::default(),
 1414            active_call,
 1415            database_id: workspace_id,
 1416            app_state,
 1417            _observe_current_user,
 1418            _apply_leader_updates,
 1419            _schedule_serialize_workspace: None,
 1420            _schedule_serialize_ssh_paths: None,
 1421            leader_updates_tx,
 1422            _subscriptions: subscriptions,
 1423            pane_history_timestamp,
 1424            workspace_actions: Default::default(),
 1425            // This data will be incorrect, but it will be overwritten by the time it needs to be used.
 1426            bounds: Default::default(),
 1427            centered_layout: false,
 1428            bounds_save_task_queued: None,
 1429            on_prompt_for_new_path: None,
 1430            on_prompt_for_open_path: None,
 1431            terminal_provider: None,
 1432            debugger_provider: None,
 1433            serializable_items_tx,
 1434            _items_serializer,
 1435            session_id: Some(session_id),
 1436            serialized_ssh_project: None,
 1437            scheduled_tasks: Vec::new(),
 1438        }
 1439    }
 1440
 1441    pub fn new_local(
 1442        abs_paths: Vec<PathBuf>,
 1443        app_state: Arc<AppState>,
 1444        requesting_window: Option<WindowHandle<Workspace>>,
 1445        env: Option<HashMap<String, String>>,
 1446        cx: &mut App,
 1447    ) -> Task<
 1448        anyhow::Result<(
 1449            WindowHandle<Workspace>,
 1450            Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 1451        )>,
 1452    > {
 1453        let project_handle = Project::local(
 1454            app_state.client.clone(),
 1455            app_state.node_runtime.clone(),
 1456            app_state.user_store.clone(),
 1457            app_state.languages.clone(),
 1458            app_state.fs.clone(),
 1459            env,
 1460            cx,
 1461        );
 1462
 1463        cx.spawn(async move |cx| {
 1464            let mut paths_to_open = Vec::with_capacity(abs_paths.len());
 1465            for path in abs_paths.into_iter() {
 1466                if let Some(canonical) = app_state.fs.canonicalize(&path).await.ok() {
 1467                    paths_to_open.push(canonical)
 1468                } else {
 1469                    paths_to_open.push(path)
 1470                }
 1471            }
 1472
 1473            let serialized_workspace =
 1474                persistence::DB.workspace_for_roots(paths_to_open.as_slice());
 1475
 1476            let workspace_location = serialized_workspace
 1477                .as_ref()
 1478                .map(|ws| &ws.location)
 1479                .and_then(|loc| match loc {
 1480                    SerializedWorkspaceLocation::Local(_, order) => {
 1481                        Some((loc.sorted_paths(), order.order()))
 1482                    }
 1483                    _ => None,
 1484                });
 1485
 1486            if let Some((paths, order)) = workspace_location {
 1487                paths_to_open = paths.iter().cloned().collect();
 1488
 1489                if order.iter().enumerate().any(|(i, &j)| i != j) {
 1490                    project_handle
 1491                        .update(cx, |project, cx| {
 1492                            project.set_worktrees_reordered(true, cx);
 1493                        })
 1494                        .log_err();
 1495                }
 1496            }
 1497
 1498            // Get project paths for all of the abs_paths
 1499            let mut project_paths: Vec<(PathBuf, Option<ProjectPath>)> =
 1500                Vec::with_capacity(paths_to_open.len());
 1501
 1502            for path in paths_to_open.into_iter() {
 1503                if let Some((_, project_entry)) = cx
 1504                    .update(|cx| {
 1505                        Workspace::project_path_for_path(project_handle.clone(), &path, true, cx)
 1506                    })?
 1507                    .await
 1508                    .log_err()
 1509                {
 1510                    project_paths.push((path, Some(project_entry)));
 1511                } else {
 1512                    project_paths.push((path, None));
 1513                }
 1514            }
 1515
 1516            let workspace_id = if let Some(serialized_workspace) = serialized_workspace.as_ref() {
 1517                serialized_workspace.id
 1518            } else {
 1519                DB.next_id().await.unwrap_or_else(|_| Default::default())
 1520            };
 1521
 1522            let toolchains = DB.toolchains(workspace_id).await?;
 1523
 1524            for (toolchain, worktree_id, path) in toolchains {
 1525                let toolchain_path = PathBuf::from(toolchain.path.clone().to_string());
 1526                if !app_state.fs.is_file(toolchain_path.as_path()).await {
 1527                    continue;
 1528                }
 1529
 1530                project_handle
 1531                    .update(cx, |this, cx| {
 1532                        this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 1533                    })?
 1534                    .await;
 1535            }
 1536            let window = if let Some(window) = requesting_window {
 1537                let centered_layout = serialized_workspace
 1538                    .as_ref()
 1539                    .map(|w| w.centered_layout)
 1540                    .unwrap_or(false);
 1541
 1542                cx.update_window(window.into(), |_, window, cx| {
 1543                    window.replace_root(cx, |window, cx| {
 1544                        let mut workspace = Workspace::new(
 1545                            Some(workspace_id),
 1546                            project_handle.clone(),
 1547                            app_state.clone(),
 1548                            window,
 1549                            cx,
 1550                        );
 1551
 1552                        workspace.centered_layout = centered_layout;
 1553                        workspace
 1554                    });
 1555                })?;
 1556                window
 1557            } else {
 1558                let window_bounds_override = window_bounds_env_override();
 1559
 1560                let (window_bounds, display) = if let Some(bounds) = window_bounds_override {
 1561                    (Some(WindowBounds::Windowed(bounds)), None)
 1562                } else {
 1563                    let restorable_bounds = serialized_workspace
 1564                        .as_ref()
 1565                        .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 1566                        .or_else(|| {
 1567                            let (display, window_bounds) = DB.last_window().log_err()?;
 1568                            Some((display?, window_bounds?))
 1569                        });
 1570
 1571                    if let Some((serialized_display, serialized_status)) = restorable_bounds {
 1572                        (Some(serialized_status.0), Some(serialized_display))
 1573                    } else {
 1574                        (None, None)
 1575                    }
 1576                };
 1577
 1578                // Use the serialized workspace to construct the new window
 1579                let mut options = cx.update(|cx| (app_state.build_window_options)(display, cx))?;
 1580                options.window_bounds = window_bounds;
 1581                let centered_layout = serialized_workspace
 1582                    .as_ref()
 1583                    .map(|w| w.centered_layout)
 1584                    .unwrap_or(false);
 1585                cx.open_window(options, {
 1586                    let app_state = app_state.clone();
 1587                    let project_handle = project_handle.clone();
 1588                    move |window, cx| {
 1589                        cx.new(|cx| {
 1590                            let mut workspace = Workspace::new(
 1591                                Some(workspace_id),
 1592                                project_handle,
 1593                                app_state,
 1594                                window,
 1595                                cx,
 1596                            );
 1597                            workspace.centered_layout = centered_layout;
 1598                            workspace
 1599                        })
 1600                    }
 1601                })?
 1602            };
 1603
 1604            notify_if_database_failed(window, cx);
 1605            let opened_items = window
 1606                .update(cx, |_workspace, window, cx| {
 1607                    open_items(serialized_workspace, project_paths, window, cx)
 1608                })?
 1609                .await
 1610                .unwrap_or_default();
 1611
 1612            window
 1613                .update(cx, |workspace, window, cx| {
 1614                    window.activate_window();
 1615                    workspace.update_history(cx);
 1616                })
 1617                .log_err();
 1618            Ok((window, opened_items))
 1619        })
 1620    }
 1621
 1622    pub fn weak_handle(&self) -> WeakEntity<Self> {
 1623        self.weak_self.clone()
 1624    }
 1625
 1626    pub fn left_dock(&self) -> &Entity<Dock> {
 1627        &self.left_dock
 1628    }
 1629
 1630    pub fn bottom_dock(&self) -> &Entity<Dock> {
 1631        &self.bottom_dock
 1632    }
 1633
 1634    pub fn set_bottom_dock_layout(
 1635        &mut self,
 1636        layout: BottomDockLayout,
 1637        window: &mut Window,
 1638        cx: &mut Context<Self>,
 1639    ) {
 1640        let fs = self.project().read(cx).fs();
 1641        settings::update_settings_file::<WorkspaceSettings>(fs.clone(), cx, move |content, _cx| {
 1642            content.bottom_dock_layout = Some(layout);
 1643        });
 1644
 1645        cx.notify();
 1646        self.serialize_workspace(window, cx);
 1647    }
 1648
 1649    pub fn right_dock(&self) -> &Entity<Dock> {
 1650        &self.right_dock
 1651    }
 1652
 1653    pub fn all_docks(&self) -> [&Entity<Dock>; 3] {
 1654        [&self.left_dock, &self.bottom_dock, &self.right_dock]
 1655    }
 1656
 1657    pub fn dock_at_position(&self, position: DockPosition) -> &Entity<Dock> {
 1658        match position {
 1659            DockPosition::Left => &self.left_dock,
 1660            DockPosition::Bottom => &self.bottom_dock,
 1661            DockPosition::Right => &self.right_dock,
 1662        }
 1663    }
 1664
 1665    pub fn is_edited(&self) -> bool {
 1666        self.window_edited
 1667    }
 1668
 1669    pub fn add_panel<T: Panel>(
 1670        &mut self,
 1671        panel: Entity<T>,
 1672        window: &mut Window,
 1673        cx: &mut Context<Self>,
 1674    ) {
 1675        let focus_handle = panel.panel_focus_handle(cx);
 1676        cx.on_focus_in(&focus_handle, window, Self::handle_panel_focused)
 1677            .detach();
 1678
 1679        let dock_position = panel.position(window, cx);
 1680        let dock = self.dock_at_position(dock_position);
 1681
 1682        dock.update(cx, |dock, cx| {
 1683            dock.add_panel(panel, self.weak_self.clone(), window, cx)
 1684        });
 1685    }
 1686
 1687    pub fn status_bar(&self) -> &Entity<StatusBar> {
 1688        &self.status_bar
 1689    }
 1690
 1691    pub fn app_state(&self) -> &Arc<AppState> {
 1692        &self.app_state
 1693    }
 1694
 1695    pub fn user_store(&self) -> &Entity<UserStore> {
 1696        &self.app_state.user_store
 1697    }
 1698
 1699    pub fn project(&self) -> &Entity<Project> {
 1700        &self.project
 1701    }
 1702
 1703    pub fn recently_activated_items(&self, cx: &App) -> HashMap<EntityId, usize> {
 1704        let mut history: HashMap<EntityId, usize> = HashMap::default();
 1705
 1706        for pane_handle in &self.panes {
 1707            let pane = pane_handle.read(cx);
 1708
 1709            for entry in pane.activation_history() {
 1710                history.insert(
 1711                    entry.entity_id,
 1712                    history
 1713                        .get(&entry.entity_id)
 1714                        .cloned()
 1715                        .unwrap_or(0)
 1716                        .max(entry.timestamp),
 1717                );
 1718            }
 1719        }
 1720
 1721        history
 1722    }
 1723
 1724    pub fn recent_active_item_by_type<T: 'static>(&self, cx: &App) -> Option<Entity<T>> {
 1725        let mut recent_item: Option<Entity<T>> = None;
 1726        let mut recent_timestamp = 0;
 1727        for pane_handle in &self.panes {
 1728            let pane = pane_handle.read(cx);
 1729            let item_map: HashMap<EntityId, &Box<dyn ItemHandle>> =
 1730                pane.items().map(|item| (item.item_id(), item)).collect();
 1731            for entry in pane.activation_history() {
 1732                if entry.timestamp > recent_timestamp {
 1733                    if let Some(&item) = item_map.get(&entry.entity_id) {
 1734                        if let Some(typed_item) = item.act_as::<T>(cx) {
 1735                            recent_timestamp = entry.timestamp;
 1736                            recent_item = Some(typed_item);
 1737                        }
 1738                    }
 1739                }
 1740            }
 1741        }
 1742        recent_item
 1743    }
 1744
 1745    pub fn recent_navigation_history_iter(
 1746        &self,
 1747        cx: &App,
 1748    ) -> impl Iterator<Item = (ProjectPath, Option<PathBuf>)> {
 1749        let mut abs_paths_opened: HashMap<PathBuf, HashSet<ProjectPath>> = HashMap::default();
 1750        let mut history: HashMap<ProjectPath, (Option<PathBuf>, usize)> = HashMap::default();
 1751
 1752        for pane in &self.panes {
 1753            let pane = pane.read(cx);
 1754
 1755            pane.nav_history()
 1756                .for_each_entry(cx, |entry, (project_path, fs_path)| {
 1757                    if let Some(fs_path) = &fs_path {
 1758                        abs_paths_opened
 1759                            .entry(fs_path.clone())
 1760                            .or_default()
 1761                            .insert(project_path.clone());
 1762                    }
 1763                    let timestamp = entry.timestamp;
 1764                    match history.entry(project_path) {
 1765                        hash_map::Entry::Occupied(mut entry) => {
 1766                            let (_, old_timestamp) = entry.get();
 1767                            if &timestamp > old_timestamp {
 1768                                entry.insert((fs_path, timestamp));
 1769                            }
 1770                        }
 1771                        hash_map::Entry::Vacant(entry) => {
 1772                            entry.insert((fs_path, timestamp));
 1773                        }
 1774                    }
 1775                });
 1776
 1777            if let Some(item) = pane.active_item() {
 1778                if let Some(project_path) = item.project_path(cx) {
 1779                    let fs_path = self.project.read(cx).absolute_path(&project_path, cx);
 1780
 1781                    if let Some(fs_path) = &fs_path {
 1782                        abs_paths_opened
 1783                            .entry(fs_path.clone())
 1784                            .or_default()
 1785                            .insert(project_path.clone());
 1786                    }
 1787
 1788                    history.insert(project_path, (fs_path, std::usize::MAX));
 1789                }
 1790            }
 1791        }
 1792
 1793        history
 1794            .into_iter()
 1795            .sorted_by_key(|(_, (_, order))| *order)
 1796            .map(|(project_path, (fs_path, _))| (project_path, fs_path))
 1797            .rev()
 1798            .filter(move |(history_path, abs_path)| {
 1799                let latest_project_path_opened = abs_path
 1800                    .as_ref()
 1801                    .and_then(|abs_path| abs_paths_opened.get(abs_path))
 1802                    .and_then(|project_paths| {
 1803                        project_paths
 1804                            .iter()
 1805                            .max_by(|b1, b2| b1.worktree_id.cmp(&b2.worktree_id))
 1806                    });
 1807
 1808                latest_project_path_opened.map_or(true, |path| path == history_path)
 1809            })
 1810    }
 1811
 1812    pub fn recent_navigation_history(
 1813        &self,
 1814        limit: Option<usize>,
 1815        cx: &App,
 1816    ) -> Vec<(ProjectPath, Option<PathBuf>)> {
 1817        self.recent_navigation_history_iter(cx)
 1818            .take(limit.unwrap_or(usize::MAX))
 1819            .collect()
 1820    }
 1821
 1822    fn navigate_history(
 1823        &mut self,
 1824        pane: WeakEntity<Pane>,
 1825        mode: NavigationMode,
 1826        window: &mut Window,
 1827        cx: &mut Context<Workspace>,
 1828    ) -> Task<Result<()>> {
 1829        let to_load = if let Some(pane) = pane.upgrade() {
 1830            pane.update(cx, |pane, cx| {
 1831                window.focus(&pane.focus_handle(cx));
 1832                loop {
 1833                    // Retrieve the weak item handle from the history.
 1834                    let entry = pane.nav_history_mut().pop(mode, cx)?;
 1835
 1836                    // If the item is still present in this pane, then activate it.
 1837                    if let Some(index) = entry
 1838                        .item
 1839                        .upgrade()
 1840                        .and_then(|v| pane.index_for_item(v.as_ref()))
 1841                    {
 1842                        let prev_active_item_index = pane.active_item_index();
 1843                        pane.nav_history_mut().set_mode(mode);
 1844                        pane.activate_item(index, true, true, window, cx);
 1845                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1846
 1847                        let mut navigated = prev_active_item_index != pane.active_item_index();
 1848                        if let Some(data) = entry.data {
 1849                            navigated |= pane.active_item()?.navigate(data, window, cx);
 1850                        }
 1851
 1852                        if navigated {
 1853                            break None;
 1854                        }
 1855                    } else {
 1856                        // If the item is no longer present in this pane, then retrieve its
 1857                        // path info in order to reopen it.
 1858                        break pane
 1859                            .nav_history()
 1860                            .path_for_item(entry.item.id())
 1861                            .map(|(project_path, abs_path)| (project_path, abs_path, entry));
 1862                    }
 1863                }
 1864            })
 1865        } else {
 1866            None
 1867        };
 1868
 1869        if let Some((project_path, abs_path, entry)) = to_load {
 1870            // If the item was no longer present, then load it again from its previous path, first try the local path
 1871            let open_by_project_path = self.load_path(project_path.clone(), window, cx);
 1872
 1873            cx.spawn_in(window, async move  |workspace, cx| {
 1874                let open_by_project_path = open_by_project_path.await;
 1875                let mut navigated = false;
 1876                match open_by_project_path
 1877                    .with_context(|| format!("Navigating to {project_path:?}"))
 1878                {
 1879                    Ok((project_entry_id, build_item)) => {
 1880                        let prev_active_item_id = pane.update(cx, |pane, _| {
 1881                            pane.nav_history_mut().set_mode(mode);
 1882                            pane.active_item().map(|p| p.item_id())
 1883                        })?;
 1884
 1885                        pane.update_in(cx, |pane, window, cx| {
 1886                            let item = pane.open_item(
 1887                                project_entry_id,
 1888                                project_path,
 1889                                true,
 1890                                entry.is_preview,
 1891                                true,
 1892                                None,
 1893                                window, cx,
 1894                                build_item,
 1895                            );
 1896                            navigated |= Some(item.item_id()) != prev_active_item_id;
 1897                            pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1898                            if let Some(data) = entry.data {
 1899                                navigated |= item.navigate(data, window, cx);
 1900                            }
 1901                        })?;
 1902                    }
 1903                    Err(open_by_project_path_e) => {
 1904                        // Fall back to opening by abs path, in case an external file was opened and closed,
 1905                        // and its worktree is now dropped
 1906                        if let Some(abs_path) = abs_path {
 1907                            let prev_active_item_id = pane.update(cx, |pane, _| {
 1908                                pane.nav_history_mut().set_mode(mode);
 1909                                pane.active_item().map(|p| p.item_id())
 1910                            })?;
 1911                            let open_by_abs_path = workspace.update_in(cx, |workspace, window, cx| {
 1912                                workspace.open_abs_path(abs_path.clone(), OpenOptions { visible: Some(OpenVisible::None), ..Default::default() }, window, cx)
 1913                            })?;
 1914                            match open_by_abs_path
 1915                                .await
 1916                                .with_context(|| format!("Navigating to {abs_path:?}"))
 1917                            {
 1918                                Ok(item) => {
 1919                                    pane.update_in(cx, |pane, window, cx| {
 1920                                        navigated |= Some(item.item_id()) != prev_active_item_id;
 1921                                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1922                                        if let Some(data) = entry.data {
 1923                                            navigated |= item.navigate(data, window, cx);
 1924                                        }
 1925                                    })?;
 1926                                }
 1927                                Err(open_by_abs_path_e) => {
 1928                                    log::error!("Failed to navigate history: {open_by_project_path_e:#} and {open_by_abs_path_e:#}");
 1929                                }
 1930                            }
 1931                        }
 1932                    }
 1933                }
 1934
 1935                if !navigated {
 1936                    workspace
 1937                        .update_in(cx, |workspace, window, cx| {
 1938                            Self::navigate_history(workspace, pane, mode, window, cx)
 1939                        })?
 1940                        .await?;
 1941                }
 1942
 1943                Ok(())
 1944            })
 1945        } else {
 1946            Task::ready(Ok(()))
 1947        }
 1948    }
 1949
 1950    pub fn go_back(
 1951        &mut self,
 1952        pane: WeakEntity<Pane>,
 1953        window: &mut Window,
 1954        cx: &mut Context<Workspace>,
 1955    ) -> Task<Result<()>> {
 1956        self.navigate_history(pane, NavigationMode::GoingBack, window, cx)
 1957    }
 1958
 1959    pub fn go_forward(
 1960        &mut self,
 1961        pane: WeakEntity<Pane>,
 1962        window: &mut Window,
 1963        cx: &mut Context<Workspace>,
 1964    ) -> Task<Result<()>> {
 1965        self.navigate_history(pane, NavigationMode::GoingForward, window, cx)
 1966    }
 1967
 1968    pub fn reopen_closed_item(
 1969        &mut self,
 1970        window: &mut Window,
 1971        cx: &mut Context<Workspace>,
 1972    ) -> Task<Result<()>> {
 1973        self.navigate_history(
 1974            self.active_pane().downgrade(),
 1975            NavigationMode::ReopeningClosedItem,
 1976            window,
 1977            cx,
 1978        )
 1979    }
 1980
 1981    pub fn client(&self) -> &Arc<Client> {
 1982        &self.app_state.client
 1983    }
 1984
 1985    pub fn set_titlebar_item(&mut self, item: AnyView, _: &mut Window, cx: &mut Context<Self>) {
 1986        self.titlebar_item = Some(item);
 1987        cx.notify();
 1988    }
 1989
 1990    pub fn set_prompt_for_new_path(&mut self, prompt: PromptForNewPath) {
 1991        self.on_prompt_for_new_path = Some(prompt)
 1992    }
 1993
 1994    pub fn set_prompt_for_open_path(&mut self, prompt: PromptForOpenPath) {
 1995        self.on_prompt_for_open_path = Some(prompt)
 1996    }
 1997
 1998    pub fn set_terminal_provider(&mut self, provider: impl TerminalProvider + 'static) {
 1999        self.terminal_provider = Some(Box::new(provider));
 2000    }
 2001
 2002    pub fn set_debugger_provider(&mut self, provider: impl DebuggerProvider + 'static) {
 2003        self.debugger_provider = Some(Arc::new(provider));
 2004    }
 2005
 2006    pub fn debugger_provider(&self) -> Option<Arc<dyn DebuggerProvider>> {
 2007        self.debugger_provider.clone()
 2008    }
 2009
 2010    pub fn serialized_ssh_project(&self) -> Option<SerializedSshProject> {
 2011        self.serialized_ssh_project.clone()
 2012    }
 2013
 2014    pub fn set_serialized_ssh_project(&mut self, serialized_ssh_project: SerializedSshProject) {
 2015        self.serialized_ssh_project = Some(serialized_ssh_project);
 2016    }
 2017
 2018    pub fn prompt_for_open_path(
 2019        &mut self,
 2020        path_prompt_options: PathPromptOptions,
 2021        lister: DirectoryLister,
 2022        window: &mut Window,
 2023        cx: &mut Context<Self>,
 2024    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2025        if !lister.is_local(cx) || !WorkspaceSettings::get_global(cx).use_system_path_prompts {
 2026            let prompt = self.on_prompt_for_open_path.take().unwrap();
 2027            let rx = prompt(self, lister, window, cx);
 2028            self.on_prompt_for_open_path = Some(prompt);
 2029            rx
 2030        } else {
 2031            let (tx, rx) = oneshot::channel();
 2032            let abs_path = cx.prompt_for_paths(path_prompt_options);
 2033
 2034            cx.spawn_in(window, async move |workspace, cx| {
 2035                let Ok(result) = abs_path.await else {
 2036                    return Ok(());
 2037                };
 2038
 2039                match result {
 2040                    Ok(result) => {
 2041                        tx.send(result).ok();
 2042                    }
 2043                    Err(err) => {
 2044                        let rx = workspace.update_in(cx, |workspace, window, cx| {
 2045                            workspace.show_portal_error(err.to_string(), cx);
 2046                            let prompt = workspace.on_prompt_for_open_path.take().unwrap();
 2047                            let rx = prompt(workspace, lister, window, cx);
 2048                            workspace.on_prompt_for_open_path = Some(prompt);
 2049                            rx
 2050                        })?;
 2051                        if let Ok(path) = rx.await {
 2052                            tx.send(path).ok();
 2053                        }
 2054                    }
 2055                };
 2056                anyhow::Ok(())
 2057            })
 2058            .detach();
 2059
 2060            rx
 2061        }
 2062    }
 2063
 2064    pub fn prompt_for_new_path(
 2065        &mut self,
 2066        lister: DirectoryLister,
 2067        suggested_name: Option<String>,
 2068        window: &mut Window,
 2069        cx: &mut Context<Self>,
 2070    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2071        if self.project.read(cx).is_via_collab()
 2072            || self.project.read(cx).is_via_ssh()
 2073            || !WorkspaceSettings::get_global(cx).use_system_path_prompts
 2074        {
 2075            let prompt = self.on_prompt_for_new_path.take().unwrap();
 2076            let rx = prompt(self, lister, window, cx);
 2077            self.on_prompt_for_new_path = Some(prompt);
 2078            return rx;
 2079        }
 2080
 2081        let (tx, rx) = oneshot::channel();
 2082        cx.spawn_in(window, async move |workspace, cx| {
 2083            let abs_path = workspace.update(cx, |workspace, cx| {
 2084                let relative_to = workspace
 2085                    .most_recent_active_path(cx)
 2086                    .and_then(|p| p.parent().map(|p| p.to_path_buf()))
 2087                    .or_else(|| {
 2088                        let project = workspace.project.read(cx);
 2089                        project.visible_worktrees(cx).find_map(|worktree| {
 2090                            Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
 2091                        })
 2092                    })
 2093                    .or_else(std::env::home_dir)
 2094                    .unwrap_or_else(|| PathBuf::from(""));
 2095                cx.prompt_for_new_path(&relative_to, suggested_name.as_deref())
 2096            })?;
 2097            let abs_path = match abs_path.await? {
 2098                Ok(path) => path,
 2099                Err(err) => {
 2100                    let rx = workspace.update_in(cx, |workspace, window, cx| {
 2101                        workspace.show_portal_error(err.to_string(), cx);
 2102
 2103                        let prompt = workspace.on_prompt_for_new_path.take().unwrap();
 2104                        let rx = prompt(workspace, lister, window, cx);
 2105                        workspace.on_prompt_for_new_path = Some(prompt);
 2106                        rx
 2107                    })?;
 2108                    if let Ok(path) = rx.await {
 2109                        tx.send(path).ok();
 2110                    }
 2111                    return anyhow::Ok(());
 2112                }
 2113            };
 2114
 2115            tx.send(abs_path.map(|path| vec![path])).ok();
 2116            anyhow::Ok(())
 2117        })
 2118        .detach();
 2119
 2120        rx
 2121    }
 2122
 2123    pub fn titlebar_item(&self) -> Option<AnyView> {
 2124        self.titlebar_item.clone()
 2125    }
 2126
 2127    /// Call the given callback with a workspace whose project is local.
 2128    ///
 2129    /// If the given workspace has a local project, then it will be passed
 2130    /// to the callback. Otherwise, a new empty window will be created.
 2131    pub fn with_local_workspace<T, F>(
 2132        &mut self,
 2133        window: &mut Window,
 2134        cx: &mut Context<Self>,
 2135        callback: F,
 2136    ) -> Task<Result<T>>
 2137    where
 2138        T: 'static,
 2139        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
 2140    {
 2141        if self.project.read(cx).is_local() {
 2142            Task::ready(Ok(callback(self, window, cx)))
 2143        } else {
 2144            let env = self.project.read(cx).cli_environment(cx);
 2145            let task = Self::new_local(Vec::new(), self.app_state.clone(), None, env, cx);
 2146            cx.spawn_in(window, async move |_vh, cx| {
 2147                let (workspace, _) = task.await?;
 2148                workspace.update(cx, callback)
 2149            })
 2150        }
 2151    }
 2152
 2153    pub fn worktrees<'a>(&self, cx: &'a App) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2154        self.project.read(cx).worktrees(cx)
 2155    }
 2156
 2157    pub fn visible_worktrees<'a>(
 2158        &self,
 2159        cx: &'a App,
 2160    ) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2161        self.project.read(cx).visible_worktrees(cx)
 2162    }
 2163
 2164    #[cfg(any(test, feature = "test-support"))]
 2165    pub fn worktree_scans_complete(&self, cx: &App) -> impl Future<Output = ()> + 'static + use<> {
 2166        let futures = self
 2167            .worktrees(cx)
 2168            .filter_map(|worktree| worktree.read(cx).as_local())
 2169            .map(|worktree| worktree.scan_complete())
 2170            .collect::<Vec<_>>();
 2171        async move {
 2172            for future in futures {
 2173                future.await;
 2174            }
 2175        }
 2176    }
 2177
 2178    pub fn close_global(cx: &mut App) {
 2179        cx.defer(|cx| {
 2180            cx.windows().iter().find(|window| {
 2181                window
 2182                    .update(cx, |_, window, _| {
 2183                        if window.is_window_active() {
 2184                            //This can only get called when the window's project connection has been lost
 2185                            //so we don't need to prompt the user for anything and instead just close the window
 2186                            window.remove_window();
 2187                            true
 2188                        } else {
 2189                            false
 2190                        }
 2191                    })
 2192                    .unwrap_or(false)
 2193            });
 2194        });
 2195    }
 2196
 2197    pub fn close_window(&mut self, _: &CloseWindow, window: &mut Window, cx: &mut Context<Self>) {
 2198        let prepare = self.prepare_to_close(CloseIntent::CloseWindow, window, cx);
 2199        cx.spawn_in(window, async move |_, cx| {
 2200            if prepare.await? {
 2201                cx.update(|window, _cx| window.remove_window())?;
 2202            }
 2203            anyhow::Ok(())
 2204        })
 2205        .detach_and_log_err(cx)
 2206    }
 2207
 2208    pub fn move_focused_panel_to_next_position(
 2209        &mut self,
 2210        _: &MoveFocusedPanelToNextPosition,
 2211        window: &mut Window,
 2212        cx: &mut Context<Self>,
 2213    ) {
 2214        let docks = self.all_docks();
 2215        let active_dock = docks
 2216            .into_iter()
 2217            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 2218
 2219        if let Some(dock) = active_dock {
 2220            dock.update(cx, |dock, cx| {
 2221                let active_panel = dock
 2222                    .active_panel()
 2223                    .filter(|panel| panel.panel_focus_handle(cx).contains_focused(window, cx));
 2224
 2225                if let Some(panel) = active_panel {
 2226                    panel.move_to_next_position(window, cx);
 2227                }
 2228            })
 2229        }
 2230    }
 2231
 2232    pub fn prepare_to_close(
 2233        &mut self,
 2234        close_intent: CloseIntent,
 2235        window: &mut Window,
 2236        cx: &mut Context<Self>,
 2237    ) -> Task<Result<bool>> {
 2238        let active_call = self.active_call().cloned();
 2239
 2240        // On Linux and Windows, closing the last window should restore the last workspace.
 2241        let save_last_workspace = cfg!(not(target_os = "macos"))
 2242            && close_intent != CloseIntent::ReplaceWindow
 2243            && cx.windows().len() == 1;
 2244
 2245        cx.spawn_in(window, async move |this, cx| {
 2246            let workspace_count = cx.update(|_window, cx| {
 2247                cx.windows()
 2248                    .iter()
 2249                    .filter(|window| window.downcast::<Workspace>().is_some())
 2250                    .count()
 2251            })?;
 2252
 2253            if let Some(active_call) = active_call {
 2254                if close_intent != CloseIntent::Quit
 2255                    && workspace_count == 1
 2256                    && active_call.read_with(cx, |call, _| call.room().is_some())?
 2257                {
 2258                    let answer = cx.update(|window, cx| {
 2259                        window.prompt(
 2260                            PromptLevel::Warning,
 2261                            "Do you want to leave the current call?",
 2262                            None,
 2263                            &["Close window and hang up", "Cancel"],
 2264                            cx,
 2265                        )
 2266                    })?;
 2267
 2268                    if answer.await.log_err() == Some(1) {
 2269                        return anyhow::Ok(false);
 2270                    } else {
 2271                        active_call
 2272                            .update(cx, |call, cx| call.hang_up(cx))?
 2273                            .await
 2274                            .log_err();
 2275                    }
 2276                }
 2277            }
 2278
 2279            let save_result = this
 2280                .update_in(cx, |this, window, cx| {
 2281                    this.save_all_internal(SaveIntent::Close, window, cx)
 2282                })?
 2283                .await;
 2284
 2285            // If we're not quitting, but closing, we remove the workspace from
 2286            // the current session.
 2287            if close_intent != CloseIntent::Quit
 2288                && !save_last_workspace
 2289                && save_result.as_ref().map_or(false, |&res| res)
 2290            {
 2291                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))?
 2292                    .await;
 2293            }
 2294
 2295            save_result
 2296        })
 2297    }
 2298
 2299    fn save_all(&mut self, action: &SaveAll, window: &mut Window, cx: &mut Context<Self>) {
 2300        self.save_all_internal(
 2301            action.save_intent.unwrap_or(SaveIntent::SaveAll),
 2302            window,
 2303            cx,
 2304        )
 2305        .detach_and_log_err(cx);
 2306    }
 2307
 2308    fn send_keystrokes(
 2309        &mut self,
 2310        action: &SendKeystrokes,
 2311        window: &mut Window,
 2312        cx: &mut Context<Self>,
 2313    ) {
 2314        let keystrokes: Vec<Keystroke> = action
 2315            .0
 2316            .split(' ')
 2317            .flat_map(|k| Keystroke::parse(k).log_err())
 2318            .collect();
 2319        let _ = self.send_keystrokes_impl(keystrokes, window, cx);
 2320    }
 2321
 2322    pub fn send_keystrokes_impl(
 2323        &mut self,
 2324        keystrokes: Vec<Keystroke>,
 2325        window: &mut Window,
 2326        cx: &mut Context<Self>,
 2327    ) -> Shared<Task<()>> {
 2328        let mut state = self.dispatching_keystrokes.borrow_mut();
 2329        if !state.dispatched.insert(keystrokes.clone()) {
 2330            cx.propagate();
 2331            return state.task.clone().unwrap();
 2332        }
 2333
 2334        state.queue.extend(keystrokes);
 2335
 2336        let keystrokes = self.dispatching_keystrokes.clone();
 2337        if state.task.is_none() {
 2338            state.task = Some(
 2339                window
 2340                    .spawn(cx, async move |cx| {
 2341                        // limit to 100 keystrokes to avoid infinite recursion.
 2342                        for _ in 0..100 {
 2343                            let mut state = keystrokes.borrow_mut();
 2344                            let Some(keystroke) = state.queue.pop_front() else {
 2345                                state.dispatched.clear();
 2346                                state.task.take();
 2347                                return;
 2348                            };
 2349                            drop(state);
 2350                            cx.update(|window, cx| {
 2351                                let focused = window.focused(cx);
 2352                                window.dispatch_keystroke(keystroke.clone(), cx);
 2353                                if window.focused(cx) != focused {
 2354                                    // dispatch_keystroke may cause the focus to change.
 2355                                    // draw's side effect is to schedule the FocusChanged events in the current flush effect cycle
 2356                                    // And we need that to happen before the next keystroke to keep vim mode happy...
 2357                                    // (Note that the tests always do this implicitly, so you must manually test with something like:
 2358                                    //   "bindings": { "g z": ["workspace::SendKeystrokes", ": j <enter> u"]}
 2359                                    // )
 2360                                    window.draw(cx).clear();
 2361                                }
 2362                            })
 2363                            .ok();
 2364                        }
 2365
 2366                        *keystrokes.borrow_mut() = Default::default();
 2367                        log::error!("over 100 keystrokes passed to send_keystrokes");
 2368                    })
 2369                    .shared(),
 2370            );
 2371        }
 2372        state.task.clone().unwrap()
 2373    }
 2374
 2375    fn save_all_internal(
 2376        &mut self,
 2377        mut save_intent: SaveIntent,
 2378        window: &mut Window,
 2379        cx: &mut Context<Self>,
 2380    ) -> Task<Result<bool>> {
 2381        if self.project.read(cx).is_disconnected(cx) {
 2382            return Task::ready(Ok(true));
 2383        }
 2384        let dirty_items = self
 2385            .panes
 2386            .iter()
 2387            .flat_map(|pane| {
 2388                pane.read(cx).items().filter_map(|item| {
 2389                    if item.is_dirty(cx) {
 2390                        item.tab_content_text(0, cx);
 2391                        Some((pane.downgrade(), item.boxed_clone()))
 2392                    } else {
 2393                        None
 2394                    }
 2395                })
 2396            })
 2397            .collect::<Vec<_>>();
 2398
 2399        let project = self.project.clone();
 2400        cx.spawn_in(window, async move |workspace, cx| {
 2401            let dirty_items = if save_intent == SaveIntent::Close && !dirty_items.is_empty() {
 2402                let (serialize_tasks, remaining_dirty_items) =
 2403                    workspace.update_in(cx, |workspace, window, cx| {
 2404                        let mut remaining_dirty_items = Vec::new();
 2405                        let mut serialize_tasks = Vec::new();
 2406                        for (pane, item) in dirty_items {
 2407                            if let Some(task) = item
 2408                                .to_serializable_item_handle(cx)
 2409                                .and_then(|handle| handle.serialize(workspace, true, window, cx))
 2410                            {
 2411                                serialize_tasks.push(task);
 2412                            } else {
 2413                                remaining_dirty_items.push((pane, item));
 2414                            }
 2415                        }
 2416                        (serialize_tasks, remaining_dirty_items)
 2417                    })?;
 2418
 2419                futures::future::try_join_all(serialize_tasks).await?;
 2420
 2421                if remaining_dirty_items.len() > 1 {
 2422                    let answer = workspace.update_in(cx, |_, window, cx| {
 2423                        let detail = Pane::file_names_for_prompt(
 2424                            &mut remaining_dirty_items.iter().map(|(_, handle)| handle),
 2425                            cx,
 2426                        );
 2427                        window.prompt(
 2428                            PromptLevel::Warning,
 2429                            "Do you want to save all changes in the following files?",
 2430                            Some(&detail),
 2431                            &["Save all", "Discard all", "Cancel"],
 2432                            cx,
 2433                        )
 2434                    })?;
 2435                    match answer.await.log_err() {
 2436                        Some(0) => save_intent = SaveIntent::SaveAll,
 2437                        Some(1) => save_intent = SaveIntent::Skip,
 2438                        Some(2) => return Ok(false),
 2439                        _ => {}
 2440                    }
 2441                }
 2442
 2443                remaining_dirty_items
 2444            } else {
 2445                dirty_items
 2446            };
 2447
 2448            for (pane, item) in dirty_items {
 2449                let (singleton, project_entry_ids) =
 2450                    cx.update(|_, cx| (item.is_singleton(cx), item.project_entry_ids(cx)))?;
 2451                if singleton || !project_entry_ids.is_empty() {
 2452                    if !Pane::save_item(project.clone(), &pane, &*item, save_intent, cx).await? {
 2453                        return Ok(false);
 2454                    }
 2455                }
 2456            }
 2457            Ok(true)
 2458        })
 2459    }
 2460
 2461    pub fn open_workspace_for_paths(
 2462        &mut self,
 2463        replace_current_window: bool,
 2464        paths: Vec<PathBuf>,
 2465        window: &mut Window,
 2466        cx: &mut Context<Self>,
 2467    ) -> Task<Result<()>> {
 2468        let window_handle = window.window_handle().downcast::<Self>();
 2469        let is_remote = self.project.read(cx).is_via_collab();
 2470        let has_worktree = self.project.read(cx).worktrees(cx).next().is_some();
 2471        let has_dirty_items = self.items(cx).any(|item| item.is_dirty(cx));
 2472
 2473        let window_to_replace = if replace_current_window {
 2474            window_handle
 2475        } else if is_remote || has_worktree || has_dirty_items {
 2476            None
 2477        } else {
 2478            window_handle
 2479        };
 2480        let app_state = self.app_state.clone();
 2481
 2482        cx.spawn(async move |_, cx| {
 2483            cx.update(|cx| {
 2484                open_paths(
 2485                    &paths,
 2486                    app_state,
 2487                    OpenOptions {
 2488                        replace_window: window_to_replace,
 2489                        ..Default::default()
 2490                    },
 2491                    cx,
 2492                )
 2493            })?
 2494            .await?;
 2495            Ok(())
 2496        })
 2497    }
 2498
 2499    #[allow(clippy::type_complexity)]
 2500    pub fn open_paths(
 2501        &mut self,
 2502        mut abs_paths: Vec<PathBuf>,
 2503        options: OpenOptions,
 2504        pane: Option<WeakEntity<Pane>>,
 2505        window: &mut Window,
 2506        cx: &mut Context<Self>,
 2507    ) -> Task<Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>> {
 2508        log::info!("open paths {abs_paths:?}");
 2509
 2510        let fs = self.app_state.fs.clone();
 2511
 2512        // Sort the paths to ensure we add worktrees for parents before their children.
 2513        abs_paths.sort_unstable();
 2514        cx.spawn_in(window, async move |this, cx| {
 2515            let mut tasks = Vec::with_capacity(abs_paths.len());
 2516
 2517            for abs_path in &abs_paths {
 2518                let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
 2519                    OpenVisible::All => Some(true),
 2520                    OpenVisible::None => Some(false),
 2521                    OpenVisible::OnlyFiles => match fs.metadata(abs_path).await.log_err() {
 2522                        Some(Some(metadata)) => Some(!metadata.is_dir),
 2523                        Some(None) => Some(true),
 2524                        None => None,
 2525                    },
 2526                    OpenVisible::OnlyDirectories => match fs.metadata(abs_path).await.log_err() {
 2527                        Some(Some(metadata)) => Some(metadata.is_dir),
 2528                        Some(None) => Some(false),
 2529                        None => None,
 2530                    },
 2531                };
 2532                let project_path = match visible {
 2533                    Some(visible) => match this
 2534                        .update(cx, |this, cx| {
 2535                            Workspace::project_path_for_path(
 2536                                this.project.clone(),
 2537                                abs_path,
 2538                                visible,
 2539                                cx,
 2540                            )
 2541                        })
 2542                        .log_err()
 2543                    {
 2544                        Some(project_path) => project_path.await.log_err(),
 2545                        None => None,
 2546                    },
 2547                    None => None,
 2548                };
 2549
 2550                let this = this.clone();
 2551                let abs_path: Arc<Path> = SanitizedPath::from(abs_path.clone()).into();
 2552                let fs = fs.clone();
 2553                let pane = pane.clone();
 2554                let task = cx.spawn(async move |cx| {
 2555                    let (worktree, project_path) = project_path?;
 2556                    if fs.is_dir(&abs_path).await {
 2557                        this.update(cx, |workspace, cx| {
 2558                            let worktree = worktree.read(cx);
 2559                            let worktree_abs_path = worktree.abs_path();
 2560                            let entry_id = if abs_path.as_ref() == worktree_abs_path.as_ref() {
 2561                                worktree.root_entry()
 2562                            } else {
 2563                                abs_path
 2564                                    .strip_prefix(worktree_abs_path.as_ref())
 2565                                    .ok()
 2566                                    .and_then(|relative_path| {
 2567                                        worktree.entry_for_path(relative_path)
 2568                                    })
 2569                            }
 2570                            .map(|entry| entry.id);
 2571                            if let Some(entry_id) = entry_id {
 2572                                workspace.project.update(cx, |_, cx| {
 2573                                    cx.emit(project::Event::ActiveEntryChanged(Some(entry_id)));
 2574                                })
 2575                            }
 2576                        })
 2577                        .ok()?;
 2578                        None
 2579                    } else {
 2580                        Some(
 2581                            this.update_in(cx, |this, window, cx| {
 2582                                this.open_path(
 2583                                    project_path,
 2584                                    pane,
 2585                                    options.focus.unwrap_or(true),
 2586                                    window,
 2587                                    cx,
 2588                                )
 2589                            })
 2590                            .ok()?
 2591                            .await,
 2592                        )
 2593                    }
 2594                });
 2595                tasks.push(task);
 2596            }
 2597
 2598            futures::future::join_all(tasks).await
 2599        })
 2600    }
 2601
 2602    pub fn open_resolved_path(
 2603        &mut self,
 2604        path: ResolvedPath,
 2605        window: &mut Window,
 2606        cx: &mut Context<Self>,
 2607    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 2608        match path {
 2609            ResolvedPath::ProjectPath { project_path, .. } => {
 2610                self.open_path(project_path, None, true, window, cx)
 2611            }
 2612            ResolvedPath::AbsPath { path, .. } => self.open_abs_path(
 2613                path,
 2614                OpenOptions {
 2615                    visible: Some(OpenVisible::None),
 2616                    ..Default::default()
 2617                },
 2618                window,
 2619                cx,
 2620            ),
 2621        }
 2622    }
 2623
 2624    pub fn absolute_path_of_worktree(
 2625        &self,
 2626        worktree_id: WorktreeId,
 2627        cx: &mut Context<Self>,
 2628    ) -> Option<PathBuf> {
 2629        self.project
 2630            .read(cx)
 2631            .worktree_for_id(worktree_id, cx)
 2632            // TODO: use `abs_path` or `root_dir`
 2633            .map(|wt| wt.read(cx).abs_path().as_ref().to_path_buf())
 2634    }
 2635
 2636    fn add_folder_to_project(
 2637        &mut self,
 2638        _: &AddFolderToProject,
 2639        window: &mut Window,
 2640        cx: &mut Context<Self>,
 2641    ) {
 2642        let project = self.project.read(cx);
 2643        if project.is_via_collab() {
 2644            self.show_error(
 2645                &anyhow!("You cannot add folders to someone else's project"),
 2646                cx,
 2647            );
 2648            return;
 2649        }
 2650        let paths = self.prompt_for_open_path(
 2651            PathPromptOptions {
 2652                files: false,
 2653                directories: true,
 2654                multiple: true,
 2655                prompt: None,
 2656            },
 2657            DirectoryLister::Project(self.project.clone()),
 2658            window,
 2659            cx,
 2660        );
 2661        cx.spawn_in(window, async move |this, cx| {
 2662            if let Some(paths) = paths.await.log_err().flatten() {
 2663                let results = this
 2664                    .update_in(cx, |this, window, cx| {
 2665                        this.open_paths(
 2666                            paths,
 2667                            OpenOptions {
 2668                                visible: Some(OpenVisible::All),
 2669                                ..Default::default()
 2670                            },
 2671                            None,
 2672                            window,
 2673                            cx,
 2674                        )
 2675                    })?
 2676                    .await;
 2677                for result in results.into_iter().flatten() {
 2678                    result.log_err();
 2679                }
 2680            }
 2681            anyhow::Ok(())
 2682        })
 2683        .detach_and_log_err(cx);
 2684    }
 2685
 2686    pub fn project_path_for_path(
 2687        project: Entity<Project>,
 2688        abs_path: &Path,
 2689        visible: bool,
 2690        cx: &mut App,
 2691    ) -> Task<Result<(Entity<Worktree>, ProjectPath)>> {
 2692        let entry = project.update(cx, |project, cx| {
 2693            project.find_or_create_worktree(abs_path, visible, cx)
 2694        });
 2695        cx.spawn(async move |cx| {
 2696            let (worktree, path) = entry.await?;
 2697            let worktree_id = worktree.read_with(cx, |t, _| t.id())?;
 2698            Ok((
 2699                worktree,
 2700                ProjectPath {
 2701                    worktree_id,
 2702                    path: path.into(),
 2703                },
 2704            ))
 2705        })
 2706    }
 2707
 2708    pub fn items<'a>(&'a self, cx: &'a App) -> impl 'a + Iterator<Item = &'a Box<dyn ItemHandle>> {
 2709        self.panes.iter().flat_map(|pane| pane.read(cx).items())
 2710    }
 2711
 2712    pub fn item_of_type<T: Item>(&self, cx: &App) -> Option<Entity<T>> {
 2713        self.items_of_type(cx).max_by_key(|item| item.item_id())
 2714    }
 2715
 2716    pub fn items_of_type<'a, T: Item>(
 2717        &'a self,
 2718        cx: &'a App,
 2719    ) -> impl 'a + Iterator<Item = Entity<T>> {
 2720        self.panes
 2721            .iter()
 2722            .flat_map(|pane| pane.read(cx).items_of_type())
 2723    }
 2724
 2725    pub fn active_item(&self, cx: &App) -> Option<Box<dyn ItemHandle>> {
 2726        self.active_pane().read(cx).active_item()
 2727    }
 2728
 2729    pub fn active_item_as<I: 'static>(&self, cx: &App) -> Option<Entity<I>> {
 2730        let item = self.active_item(cx)?;
 2731        item.to_any().downcast::<I>().ok()
 2732    }
 2733
 2734    fn active_project_path(&self, cx: &App) -> Option<ProjectPath> {
 2735        self.active_item(cx).and_then(|item| item.project_path(cx))
 2736    }
 2737
 2738    pub fn most_recent_active_path(&self, cx: &App) -> Option<PathBuf> {
 2739        self.recent_navigation_history_iter(cx)
 2740            .filter_map(|(path, abs_path)| {
 2741                let worktree = self
 2742                    .project
 2743                    .read(cx)
 2744                    .worktree_for_id(path.worktree_id, cx)?;
 2745                if worktree.read(cx).is_visible() {
 2746                    abs_path
 2747                } else {
 2748                    None
 2749                }
 2750            })
 2751            .next()
 2752    }
 2753
 2754    pub fn save_active_item(
 2755        &mut self,
 2756        save_intent: SaveIntent,
 2757        window: &mut Window,
 2758        cx: &mut App,
 2759    ) -> Task<Result<()>> {
 2760        let project = self.project.clone();
 2761        let pane = self.active_pane();
 2762        let item = pane.read(cx).active_item();
 2763        let pane = pane.downgrade();
 2764
 2765        window.spawn(cx, async move |cx| {
 2766            if let Some(item) = item {
 2767                Pane::save_item(project, &pane, item.as_ref(), save_intent, cx)
 2768                    .await
 2769                    .map(|_| ())
 2770            } else {
 2771                Ok(())
 2772            }
 2773        })
 2774    }
 2775
 2776    pub fn close_inactive_items_and_panes(
 2777        &mut self,
 2778        action: &CloseInactiveTabsAndPanes,
 2779        window: &mut Window,
 2780        cx: &mut Context<Self>,
 2781    ) {
 2782        if let Some(task) = self.close_all_internal(
 2783            true,
 2784            action.save_intent.unwrap_or(SaveIntent::Close),
 2785            window,
 2786            cx,
 2787        ) {
 2788            task.detach_and_log_err(cx)
 2789        }
 2790    }
 2791
 2792    pub fn close_all_items_and_panes(
 2793        &mut self,
 2794        action: &CloseAllItemsAndPanes,
 2795        window: &mut Window,
 2796        cx: &mut Context<Self>,
 2797    ) {
 2798        if let Some(task) = self.close_all_internal(
 2799            false,
 2800            action.save_intent.unwrap_or(SaveIntent::Close),
 2801            window,
 2802            cx,
 2803        ) {
 2804            task.detach_and_log_err(cx)
 2805        }
 2806    }
 2807
 2808    fn close_all_internal(
 2809        &mut self,
 2810        retain_active_pane: bool,
 2811        save_intent: SaveIntent,
 2812        window: &mut Window,
 2813        cx: &mut Context<Self>,
 2814    ) -> Option<Task<Result<()>>> {
 2815        let current_pane = self.active_pane();
 2816
 2817        let mut tasks = Vec::new();
 2818
 2819        if retain_active_pane {
 2820            let current_pane_close = current_pane.update(cx, |pane, cx| {
 2821                pane.close_other_items(
 2822                    &CloseOtherItems {
 2823                        save_intent: None,
 2824                        close_pinned: false,
 2825                    },
 2826                    None,
 2827                    window,
 2828                    cx,
 2829                )
 2830            });
 2831
 2832            tasks.push(current_pane_close);
 2833        }
 2834
 2835        for pane in self.panes() {
 2836            if retain_active_pane && pane.entity_id() == current_pane.entity_id() {
 2837                continue;
 2838            }
 2839
 2840            let close_pane_items = pane.update(cx, |pane: &mut Pane, cx| {
 2841                pane.close_all_items(
 2842                    &CloseAllItems {
 2843                        save_intent: Some(save_intent),
 2844                        close_pinned: false,
 2845                    },
 2846                    window,
 2847                    cx,
 2848                )
 2849            });
 2850
 2851            tasks.push(close_pane_items)
 2852        }
 2853
 2854        if tasks.is_empty() {
 2855            None
 2856        } else {
 2857            Some(cx.spawn_in(window, async move |_, _| {
 2858                for task in tasks {
 2859                    task.await?
 2860                }
 2861                Ok(())
 2862            }))
 2863        }
 2864    }
 2865
 2866    pub fn is_dock_at_position_open(&self, position: DockPosition, cx: &mut Context<Self>) -> bool {
 2867        self.dock_at_position(position).read(cx).is_open()
 2868    }
 2869
 2870    pub fn toggle_dock(
 2871        &mut self,
 2872        dock_side: DockPosition,
 2873        window: &mut Window,
 2874        cx: &mut Context<Self>,
 2875    ) {
 2876        let dock = self.dock_at_position(dock_side);
 2877        let mut focus_center = false;
 2878        let mut reveal_dock = false;
 2879        dock.update(cx, |dock, cx| {
 2880            let other_is_zoomed = self.zoomed.is_some() && self.zoomed_position != Some(dock_side);
 2881            let was_visible = dock.is_open() && !other_is_zoomed;
 2882            dock.set_open(!was_visible, window, cx);
 2883
 2884            if dock.active_panel().is_none() {
 2885                let Some(panel_ix) = dock
 2886                    .first_enabled_panel_idx(cx)
 2887                    .log_with_level(log::Level::Info)
 2888                else {
 2889                    return;
 2890                };
 2891                dock.activate_panel(panel_ix, window, cx);
 2892            }
 2893
 2894            if let Some(active_panel) = dock.active_panel() {
 2895                if was_visible {
 2896                    if active_panel
 2897                        .panel_focus_handle(cx)
 2898                        .contains_focused(window, cx)
 2899                    {
 2900                        focus_center = true;
 2901                    }
 2902                } else {
 2903                    let focus_handle = &active_panel.panel_focus_handle(cx);
 2904                    window.focus(focus_handle);
 2905                    reveal_dock = true;
 2906                }
 2907            }
 2908        });
 2909
 2910        if reveal_dock {
 2911            self.dismiss_zoomed_items_to_reveal(Some(dock_side), window, cx);
 2912        }
 2913
 2914        if focus_center {
 2915            self.active_pane
 2916                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 2917        }
 2918
 2919        cx.notify();
 2920        self.serialize_workspace(window, cx);
 2921    }
 2922
 2923    fn active_dock(&self, window: &Window, cx: &Context<Self>) -> Option<&Entity<Dock>> {
 2924        self.all_docks().into_iter().find(|&dock| {
 2925            dock.read(cx).is_open() && dock.focus_handle(cx).contains_focused(window, cx)
 2926        })
 2927    }
 2928
 2929    fn close_active_dock(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
 2930        if let Some(dock) = self.active_dock(window, cx) {
 2931            dock.update(cx, |dock, cx| {
 2932                dock.set_open(false, window, cx);
 2933            });
 2934            return true;
 2935        }
 2936        false
 2937    }
 2938
 2939    pub fn close_all_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 2940        for dock in self.all_docks() {
 2941            dock.update(cx, |dock, cx| {
 2942                dock.set_open(false, window, cx);
 2943            });
 2944        }
 2945
 2946        cx.focus_self(window);
 2947        cx.notify();
 2948        self.serialize_workspace(window, cx);
 2949    }
 2950
 2951    /// Transfer focus to the panel of the given type.
 2952    pub fn focus_panel<T: Panel>(
 2953        &mut self,
 2954        window: &mut Window,
 2955        cx: &mut Context<Self>,
 2956    ) -> Option<Entity<T>> {
 2957        let panel = self.focus_or_unfocus_panel::<T>(window, cx, |_, _, _| true)?;
 2958        panel.to_any().downcast().ok()
 2959    }
 2960
 2961    /// Focus the panel of the given type if it isn't already focused. If it is
 2962    /// already focused, then transfer focus back to the workspace center.
 2963    pub fn toggle_panel_focus<T: Panel>(
 2964        &mut self,
 2965        window: &mut Window,
 2966        cx: &mut Context<Self>,
 2967    ) -> bool {
 2968        let mut did_focus_panel = false;
 2969        self.focus_or_unfocus_panel::<T>(window, cx, |panel, window, cx| {
 2970            did_focus_panel = !panel.panel_focus_handle(cx).contains_focused(window, cx);
 2971            did_focus_panel
 2972        });
 2973        did_focus_panel
 2974    }
 2975
 2976    pub fn activate_panel_for_proto_id(
 2977        &mut self,
 2978        panel_id: PanelId,
 2979        window: &mut Window,
 2980        cx: &mut Context<Self>,
 2981    ) -> Option<Arc<dyn PanelHandle>> {
 2982        let mut panel = None;
 2983        for dock in self.all_docks() {
 2984            if let Some(panel_index) = dock.read(cx).panel_index_for_proto_id(panel_id) {
 2985                panel = dock.update(cx, |dock, cx| {
 2986                    dock.activate_panel(panel_index, window, cx);
 2987                    dock.set_open(true, window, cx);
 2988                    dock.active_panel().cloned()
 2989                });
 2990                break;
 2991            }
 2992        }
 2993
 2994        if panel.is_some() {
 2995            cx.notify();
 2996            self.serialize_workspace(window, cx);
 2997        }
 2998
 2999        panel
 3000    }
 3001
 3002    /// Focus or unfocus the given panel type, depending on the given callback.
 3003    fn focus_or_unfocus_panel<T: Panel>(
 3004        &mut self,
 3005        window: &mut Window,
 3006        cx: &mut Context<Self>,
 3007        mut should_focus: impl FnMut(&dyn PanelHandle, &mut Window, &mut Context<Dock>) -> bool,
 3008    ) -> Option<Arc<dyn PanelHandle>> {
 3009        let mut result_panel = None;
 3010        let mut serialize = false;
 3011        for dock in self.all_docks() {
 3012            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3013                let mut focus_center = false;
 3014                let panel = dock.update(cx, |dock, cx| {
 3015                    dock.activate_panel(panel_index, window, cx);
 3016
 3017                    let panel = dock.active_panel().cloned();
 3018                    if let Some(panel) = panel.as_ref() {
 3019                        if should_focus(&**panel, window, cx) {
 3020                            dock.set_open(true, window, cx);
 3021                            panel.panel_focus_handle(cx).focus(window);
 3022                        } else {
 3023                            focus_center = true;
 3024                        }
 3025                    }
 3026                    panel
 3027                });
 3028
 3029                if focus_center {
 3030                    self.active_pane
 3031                        .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3032                }
 3033
 3034                result_panel = panel;
 3035                serialize = true;
 3036                break;
 3037            }
 3038        }
 3039
 3040        if serialize {
 3041            self.serialize_workspace(window, cx);
 3042        }
 3043
 3044        cx.notify();
 3045        result_panel
 3046    }
 3047
 3048    /// Open the panel of the given type
 3049    pub fn open_panel<T: Panel>(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3050        for dock in self.all_docks() {
 3051            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3052                dock.update(cx, |dock, cx| {
 3053                    dock.activate_panel(panel_index, window, cx);
 3054                    dock.set_open(true, window, cx);
 3055                });
 3056            }
 3057        }
 3058    }
 3059
 3060    pub fn panel<T: Panel>(&self, cx: &App) -> Option<Entity<T>> {
 3061        self.all_docks()
 3062            .iter()
 3063            .find_map(|dock| dock.read(cx).panel::<T>())
 3064    }
 3065
 3066    fn dismiss_zoomed_items_to_reveal(
 3067        &mut self,
 3068        dock_to_reveal: Option<DockPosition>,
 3069        window: &mut Window,
 3070        cx: &mut Context<Self>,
 3071    ) {
 3072        // If a center pane is zoomed, unzoom it.
 3073        for pane in &self.panes {
 3074            if pane != &self.active_pane || dock_to_reveal.is_some() {
 3075                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 3076            }
 3077        }
 3078
 3079        // If another dock is zoomed, hide it.
 3080        let mut focus_center = false;
 3081        for dock in self.all_docks() {
 3082            dock.update(cx, |dock, cx| {
 3083                if Some(dock.position()) != dock_to_reveal {
 3084                    if let Some(panel) = dock.active_panel() {
 3085                        if panel.is_zoomed(window, cx) {
 3086                            focus_center |=
 3087                                panel.panel_focus_handle(cx).contains_focused(window, cx);
 3088                            dock.set_open(false, window, cx);
 3089                        }
 3090                    }
 3091                }
 3092            });
 3093        }
 3094
 3095        if focus_center {
 3096            self.active_pane
 3097                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3098        }
 3099
 3100        if self.zoomed_position != dock_to_reveal {
 3101            self.zoomed = None;
 3102            self.zoomed_position = None;
 3103            cx.emit(Event::ZoomChanged);
 3104        }
 3105
 3106        cx.notify();
 3107    }
 3108
 3109    fn add_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 3110        let pane = cx.new(|cx| {
 3111            let mut pane = Pane::new(
 3112                self.weak_handle(),
 3113                self.project.clone(),
 3114                self.pane_history_timestamp.clone(),
 3115                None,
 3116                NewFile.boxed_clone(),
 3117                window,
 3118                cx,
 3119            );
 3120            pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 3121            pane
 3122        });
 3123        cx.subscribe_in(&pane, window, Self::handle_pane_event)
 3124            .detach();
 3125        self.panes.push(pane.clone());
 3126
 3127        window.focus(&pane.focus_handle(cx));
 3128
 3129        cx.emit(Event::PaneAdded(pane.clone()));
 3130        pane
 3131    }
 3132
 3133    pub fn add_item_to_center(
 3134        &mut self,
 3135        item: Box<dyn ItemHandle>,
 3136        window: &mut Window,
 3137        cx: &mut Context<Self>,
 3138    ) -> bool {
 3139        if let Some(center_pane) = self.last_active_center_pane.clone() {
 3140            if let Some(center_pane) = center_pane.upgrade() {
 3141                center_pane.update(cx, |pane, cx| {
 3142                    pane.add_item(item, true, true, None, window, cx)
 3143                });
 3144                true
 3145            } else {
 3146                false
 3147            }
 3148        } else {
 3149            false
 3150        }
 3151    }
 3152
 3153    pub fn add_item_to_active_pane(
 3154        &mut self,
 3155        item: Box<dyn ItemHandle>,
 3156        destination_index: Option<usize>,
 3157        focus_item: bool,
 3158        window: &mut Window,
 3159        cx: &mut App,
 3160    ) {
 3161        self.add_item(
 3162            self.active_pane.clone(),
 3163            item,
 3164            destination_index,
 3165            false,
 3166            focus_item,
 3167            window,
 3168            cx,
 3169        )
 3170    }
 3171
 3172    pub fn add_item(
 3173        &mut self,
 3174        pane: Entity<Pane>,
 3175        item: Box<dyn ItemHandle>,
 3176        destination_index: Option<usize>,
 3177        activate_pane: bool,
 3178        focus_item: bool,
 3179        window: &mut Window,
 3180        cx: &mut App,
 3181    ) {
 3182        if let Some(text) = item.telemetry_event_text(cx) {
 3183            telemetry::event!(text);
 3184        }
 3185
 3186        pane.update(cx, |pane, cx| {
 3187            pane.add_item(
 3188                item,
 3189                activate_pane,
 3190                focus_item,
 3191                destination_index,
 3192                window,
 3193                cx,
 3194            )
 3195        });
 3196    }
 3197
 3198    pub fn split_item(
 3199        &mut self,
 3200        split_direction: SplitDirection,
 3201        item: Box<dyn ItemHandle>,
 3202        window: &mut Window,
 3203        cx: &mut Context<Self>,
 3204    ) {
 3205        let new_pane = self.split_pane(self.active_pane.clone(), split_direction, window, cx);
 3206        self.add_item(new_pane, item, None, true, true, window, cx);
 3207    }
 3208
 3209    pub fn open_abs_path(
 3210        &mut self,
 3211        abs_path: PathBuf,
 3212        options: OpenOptions,
 3213        window: &mut Window,
 3214        cx: &mut Context<Self>,
 3215    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3216        cx.spawn_in(window, async move |workspace, cx| {
 3217            let open_paths_task_result = workspace
 3218                .update_in(cx, |workspace, window, cx| {
 3219                    workspace.open_paths(vec![abs_path.clone()], options, None, window, cx)
 3220                })
 3221                .with_context(|| format!("open abs path {abs_path:?} task spawn"))?
 3222                .await;
 3223            anyhow::ensure!(
 3224                open_paths_task_result.len() == 1,
 3225                "open abs path {abs_path:?} task returned incorrect number of results"
 3226            );
 3227            match open_paths_task_result
 3228                .into_iter()
 3229                .next()
 3230                .expect("ensured single task result")
 3231            {
 3232                Some(open_result) => {
 3233                    open_result.with_context(|| format!("open abs path {abs_path:?} task join"))
 3234                }
 3235                None => anyhow::bail!("open abs path {abs_path:?} task returned None"),
 3236            }
 3237        })
 3238    }
 3239
 3240    pub fn split_abs_path(
 3241        &mut self,
 3242        abs_path: PathBuf,
 3243        visible: bool,
 3244        window: &mut Window,
 3245        cx: &mut Context<Self>,
 3246    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3247        let project_path_task =
 3248            Workspace::project_path_for_path(self.project.clone(), &abs_path, visible, cx);
 3249        cx.spawn_in(window, async move |this, cx| {
 3250            let (_, path) = project_path_task.await?;
 3251            this.update_in(cx, |this, window, cx| this.split_path(path, window, cx))?
 3252                .await
 3253        })
 3254    }
 3255
 3256    pub fn open_path(
 3257        &mut self,
 3258        path: impl Into<ProjectPath>,
 3259        pane: Option<WeakEntity<Pane>>,
 3260        focus_item: bool,
 3261        window: &mut Window,
 3262        cx: &mut App,
 3263    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3264        self.open_path_preview(path, pane, focus_item, false, true, window, cx)
 3265    }
 3266
 3267    pub fn open_path_preview(
 3268        &mut self,
 3269        path: impl Into<ProjectPath>,
 3270        pane: Option<WeakEntity<Pane>>,
 3271        focus_item: bool,
 3272        allow_preview: bool,
 3273        activate: bool,
 3274        window: &mut Window,
 3275        cx: &mut App,
 3276    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3277        let pane = pane.unwrap_or_else(|| {
 3278            self.last_active_center_pane.clone().unwrap_or_else(|| {
 3279                self.panes
 3280                    .first()
 3281                    .expect("There must be an active pane")
 3282                    .downgrade()
 3283            })
 3284        });
 3285
 3286        let project_path = path.into();
 3287        let task = self.load_path(project_path.clone(), window, cx);
 3288        window.spawn(cx, async move |cx| {
 3289            let (project_entry_id, build_item) = task.await?;
 3290            let result = pane.update_in(cx, |pane, window, cx| {
 3291                pane.open_item(
 3292                    project_entry_id,
 3293                    project_path,
 3294                    focus_item,
 3295                    allow_preview,
 3296                    activate,
 3297                    None,
 3298                    window,
 3299                    cx,
 3300                    build_item,
 3301                )
 3302            });
 3303            result
 3304        })
 3305    }
 3306
 3307    pub fn split_path(
 3308        &mut self,
 3309        path: impl Into<ProjectPath>,
 3310        window: &mut Window,
 3311        cx: &mut Context<Self>,
 3312    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3313        self.split_path_preview(path, false, None, window, cx)
 3314    }
 3315
 3316    pub fn split_path_preview(
 3317        &mut self,
 3318        path: impl Into<ProjectPath>,
 3319        allow_preview: bool,
 3320        split_direction: Option<SplitDirection>,
 3321        window: &mut Window,
 3322        cx: &mut Context<Self>,
 3323    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3324        let pane = self.last_active_center_pane.clone().unwrap_or_else(|| {
 3325            self.panes
 3326                .first()
 3327                .expect("There must be an active pane")
 3328                .downgrade()
 3329        });
 3330
 3331        if let Member::Pane(center_pane) = &self.center.root {
 3332            if center_pane.read(cx).items_len() == 0 {
 3333                return self.open_path(path, Some(pane), true, window, cx);
 3334            }
 3335        }
 3336
 3337        let project_path = path.into();
 3338        let task = self.load_path(project_path.clone(), window, cx);
 3339        cx.spawn_in(window, async move |this, cx| {
 3340            let (project_entry_id, build_item) = task.await?;
 3341            this.update_in(cx, move |this, window, cx| -> Option<_> {
 3342                let pane = pane.upgrade()?;
 3343                let new_pane = this.split_pane(
 3344                    pane,
 3345                    split_direction.unwrap_or(SplitDirection::Right),
 3346                    window,
 3347                    cx,
 3348                );
 3349                new_pane.update(cx, |new_pane, cx| {
 3350                    Some(new_pane.open_item(
 3351                        project_entry_id,
 3352                        project_path,
 3353                        true,
 3354                        allow_preview,
 3355                        true,
 3356                        None,
 3357                        window,
 3358                        cx,
 3359                        build_item,
 3360                    ))
 3361                })
 3362            })
 3363            .map(|option| option.context("pane was dropped"))?
 3364        })
 3365    }
 3366
 3367    fn load_path(
 3368        &mut self,
 3369        path: ProjectPath,
 3370        window: &mut Window,
 3371        cx: &mut App,
 3372    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
 3373        let project = self.project().clone();
 3374        let registry = cx.default_global::<ProjectItemRegistry>().clone();
 3375        registry.open_path(&project, &path, window, cx)
 3376    }
 3377
 3378    pub fn find_project_item<T>(
 3379        &self,
 3380        pane: &Entity<Pane>,
 3381        project_item: &Entity<T::Item>,
 3382        cx: &App,
 3383    ) -> Option<Entity<T>>
 3384    where
 3385        T: ProjectItem,
 3386    {
 3387        use project::ProjectItem as _;
 3388        let project_item = project_item.read(cx);
 3389        let entry_id = project_item.entry_id(cx);
 3390        let project_path = project_item.project_path(cx);
 3391
 3392        let mut item = None;
 3393        if let Some(entry_id) = entry_id {
 3394            item = pane.read(cx).item_for_entry(entry_id, cx);
 3395        }
 3396        if item.is_none() {
 3397            if let Some(project_path) = project_path {
 3398                item = pane.read(cx).item_for_path(project_path, cx);
 3399            }
 3400        }
 3401
 3402        item.and_then(|item| item.downcast::<T>())
 3403    }
 3404
 3405    pub fn is_project_item_open<T>(
 3406        &self,
 3407        pane: &Entity<Pane>,
 3408        project_item: &Entity<T::Item>,
 3409        cx: &App,
 3410    ) -> bool
 3411    where
 3412        T: ProjectItem,
 3413    {
 3414        self.find_project_item::<T>(pane, project_item, cx)
 3415            .is_some()
 3416    }
 3417
 3418    pub fn open_project_item<T>(
 3419        &mut self,
 3420        pane: Entity<Pane>,
 3421        project_item: Entity<T::Item>,
 3422        activate_pane: bool,
 3423        focus_item: bool,
 3424        window: &mut Window,
 3425        cx: &mut Context<Self>,
 3426    ) -> Entity<T>
 3427    where
 3428        T: ProjectItem,
 3429    {
 3430        if let Some(item) = self.find_project_item(&pane, &project_item, cx) {
 3431            self.activate_item(&item, activate_pane, focus_item, window, cx);
 3432            return item;
 3433        }
 3434
 3435        let item = pane.update(cx, |pane, cx| {
 3436            cx.new(|cx| {
 3437                T::for_project_item(self.project().clone(), Some(pane), project_item, window, cx)
 3438            })
 3439        });
 3440        let item_id = item.item_id();
 3441        let mut destination_index = None;
 3442        pane.update(cx, |pane, cx| {
 3443            if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation {
 3444                if let Some(preview_item_id) = pane.preview_item_id() {
 3445                    if preview_item_id != item_id {
 3446                        destination_index = pane.close_current_preview_item(window, cx);
 3447                    }
 3448                }
 3449            }
 3450            pane.set_preview_item_id(Some(item.item_id()), cx)
 3451        });
 3452
 3453        self.add_item(
 3454            pane,
 3455            Box::new(item.clone()),
 3456            destination_index,
 3457            activate_pane,
 3458            focus_item,
 3459            window,
 3460            cx,
 3461        );
 3462        item
 3463    }
 3464
 3465    pub fn open_shared_screen(
 3466        &mut self,
 3467        peer_id: PeerId,
 3468        window: &mut Window,
 3469        cx: &mut Context<Self>,
 3470    ) {
 3471        if let Some(shared_screen) =
 3472            self.shared_screen_for_peer(peer_id, &self.active_pane, window, cx)
 3473        {
 3474            self.active_pane.update(cx, |pane, cx| {
 3475                pane.add_item(Box::new(shared_screen), false, true, None, window, cx)
 3476            });
 3477        }
 3478    }
 3479
 3480    pub fn activate_item(
 3481        &mut self,
 3482        item: &dyn ItemHandle,
 3483        activate_pane: bool,
 3484        focus_item: bool,
 3485        window: &mut Window,
 3486        cx: &mut App,
 3487    ) -> bool {
 3488        let result = self.panes.iter().find_map(|pane| {
 3489            pane.read(cx)
 3490                .index_for_item(item)
 3491                .map(|ix| (pane.clone(), ix))
 3492        });
 3493        if let Some((pane, ix)) = result {
 3494            pane.update(cx, |pane, cx| {
 3495                pane.activate_item(ix, activate_pane, focus_item, window, cx)
 3496            });
 3497            true
 3498        } else {
 3499            false
 3500        }
 3501    }
 3502
 3503    fn activate_pane_at_index(
 3504        &mut self,
 3505        action: &ActivatePane,
 3506        window: &mut Window,
 3507        cx: &mut Context<Self>,
 3508    ) {
 3509        let panes = self.center.panes();
 3510        if let Some(pane) = panes.get(action.0).map(|p| (*p).clone()) {
 3511            window.focus(&pane.focus_handle(cx));
 3512        } else {
 3513            self.split_and_clone(self.active_pane.clone(), SplitDirection::Right, window, cx);
 3514        }
 3515    }
 3516
 3517    fn move_item_to_pane_at_index(
 3518        &mut self,
 3519        action: &MoveItemToPane,
 3520        window: &mut Window,
 3521        cx: &mut Context<Self>,
 3522    ) {
 3523        let panes = self.center.panes();
 3524        let destination = match panes.get(action.destination) {
 3525            Some(&destination) => destination.clone(),
 3526            None => {
 3527                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3528                    return;
 3529                }
 3530                let direction = SplitDirection::Right;
 3531                let split_off_pane = self
 3532                    .find_pane_in_direction(direction, cx)
 3533                    .unwrap_or_else(|| self.active_pane.clone());
 3534                let new_pane = self.add_pane(window, cx);
 3535                if self
 3536                    .center
 3537                    .split(&split_off_pane, &new_pane, direction)
 3538                    .log_err()
 3539                    .is_none()
 3540                {
 3541                    return;
 3542                };
 3543                new_pane
 3544            }
 3545        };
 3546
 3547        if action.clone {
 3548            clone_active_item(
 3549                self.database_id(),
 3550                &self.active_pane,
 3551                &destination,
 3552                action.focus,
 3553                window,
 3554                cx,
 3555            )
 3556        } else {
 3557            move_active_item(
 3558                &self.active_pane,
 3559                &destination,
 3560                action.focus,
 3561                true,
 3562                window,
 3563                cx,
 3564            )
 3565        }
 3566    }
 3567
 3568    pub fn activate_next_pane(&mut self, window: &mut Window, cx: &mut App) {
 3569        let panes = self.center.panes();
 3570        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3571            let next_ix = (ix + 1) % panes.len();
 3572            let next_pane = panes[next_ix].clone();
 3573            window.focus(&next_pane.focus_handle(cx));
 3574        }
 3575    }
 3576
 3577    pub fn activate_previous_pane(&mut self, window: &mut Window, cx: &mut App) {
 3578        let panes = self.center.panes();
 3579        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3580            let prev_ix = cmp::min(ix.wrapping_sub(1), panes.len() - 1);
 3581            let prev_pane = panes[prev_ix].clone();
 3582            window.focus(&prev_pane.focus_handle(cx));
 3583        }
 3584    }
 3585
 3586    pub fn activate_pane_in_direction(
 3587        &mut self,
 3588        direction: SplitDirection,
 3589        window: &mut Window,
 3590        cx: &mut App,
 3591    ) {
 3592        use ActivateInDirectionTarget as Target;
 3593        enum Origin {
 3594            LeftDock,
 3595            RightDock,
 3596            BottomDock,
 3597            Center,
 3598        }
 3599
 3600        let origin: Origin = [
 3601            (&self.left_dock, Origin::LeftDock),
 3602            (&self.right_dock, Origin::RightDock),
 3603            (&self.bottom_dock, Origin::BottomDock),
 3604        ]
 3605        .into_iter()
 3606        .find_map(|(dock, origin)| {
 3607            if dock.focus_handle(cx).contains_focused(window, cx) && dock.read(cx).is_open() {
 3608                Some(origin)
 3609            } else {
 3610                None
 3611            }
 3612        })
 3613        .unwrap_or(Origin::Center);
 3614
 3615        let get_last_active_pane = || {
 3616            let pane = self
 3617                .last_active_center_pane
 3618                .clone()
 3619                .unwrap_or_else(|| {
 3620                    self.panes
 3621                        .first()
 3622                        .expect("There must be an active pane")
 3623                        .downgrade()
 3624                })
 3625                .upgrade()?;
 3626            (pane.read(cx).items_len() != 0).then_some(pane)
 3627        };
 3628
 3629        let try_dock =
 3630            |dock: &Entity<Dock>| dock.read(cx).is_open().then(|| Target::Dock(dock.clone()));
 3631
 3632        let target = match (origin, direction) {
 3633            // We're in the center, so we first try to go to a different pane,
 3634            // otherwise try to go to a dock.
 3635            (Origin::Center, direction) => {
 3636                if let Some(pane) = self.find_pane_in_direction(direction, cx) {
 3637                    Some(Target::Pane(pane))
 3638                } else {
 3639                    match direction {
 3640                        SplitDirection::Up => None,
 3641                        SplitDirection::Down => try_dock(&self.bottom_dock),
 3642                        SplitDirection::Left => try_dock(&self.left_dock),
 3643                        SplitDirection::Right => try_dock(&self.right_dock),
 3644                    }
 3645                }
 3646            }
 3647
 3648            (Origin::LeftDock, SplitDirection::Right) => {
 3649                if let Some(last_active_pane) = get_last_active_pane() {
 3650                    Some(Target::Pane(last_active_pane))
 3651                } else {
 3652                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.right_dock))
 3653                }
 3654            }
 3655
 3656            (Origin::LeftDock, SplitDirection::Down)
 3657            | (Origin::RightDock, SplitDirection::Down) => try_dock(&self.bottom_dock),
 3658
 3659            (Origin::BottomDock, SplitDirection::Up) => get_last_active_pane().map(Target::Pane),
 3660            (Origin::BottomDock, SplitDirection::Left) => try_dock(&self.left_dock),
 3661            (Origin::BottomDock, SplitDirection::Right) => try_dock(&self.right_dock),
 3662
 3663            (Origin::RightDock, SplitDirection::Left) => {
 3664                if let Some(last_active_pane) = get_last_active_pane() {
 3665                    Some(Target::Pane(last_active_pane))
 3666                } else {
 3667                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.left_dock))
 3668                }
 3669            }
 3670
 3671            _ => None,
 3672        };
 3673
 3674        match target {
 3675            Some(ActivateInDirectionTarget::Pane(pane)) => {
 3676                let pane = pane.read(cx);
 3677                if let Some(item) = pane.active_item() {
 3678                    item.item_focus_handle(cx).focus(window);
 3679                } else {
 3680                    log::error!(
 3681                        "Could not find a focus target when in switching focus in {direction} direction for a pane",
 3682                    );
 3683                }
 3684            }
 3685            Some(ActivateInDirectionTarget::Dock(dock)) => {
 3686                // Defer this to avoid a panic when the dock's active panel is already on the stack.
 3687                window.defer(cx, move |window, cx| {
 3688                    let dock = dock.read(cx);
 3689                    if let Some(panel) = dock.active_panel() {
 3690                        panel.panel_focus_handle(cx).focus(window);
 3691                    } else {
 3692                        log::error!("Could not find a focus target when in switching focus in {direction} direction for a {:?} dock", dock.position());
 3693                    }
 3694                })
 3695            }
 3696            None => {}
 3697        }
 3698    }
 3699
 3700    pub fn move_item_to_pane_in_direction(
 3701        &mut self,
 3702        action: &MoveItemToPaneInDirection,
 3703        window: &mut Window,
 3704        cx: &mut Context<Self>,
 3705    ) {
 3706        let destination = match self.find_pane_in_direction(action.direction, cx) {
 3707            Some(destination) => destination,
 3708            None => {
 3709                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3710                    return;
 3711                }
 3712                let new_pane = self.add_pane(window, cx);
 3713                if self
 3714                    .center
 3715                    .split(&self.active_pane, &new_pane, action.direction)
 3716                    .log_err()
 3717                    .is_none()
 3718                {
 3719                    return;
 3720                };
 3721                new_pane
 3722            }
 3723        };
 3724
 3725        if action.clone {
 3726            clone_active_item(
 3727                self.database_id(),
 3728                &self.active_pane,
 3729                &destination,
 3730                action.focus,
 3731                window,
 3732                cx,
 3733            )
 3734        } else {
 3735            move_active_item(
 3736                &self.active_pane,
 3737                &destination,
 3738                action.focus,
 3739                true,
 3740                window,
 3741                cx,
 3742            );
 3743        }
 3744    }
 3745
 3746    pub fn bounding_box_for_pane(&self, pane: &Entity<Pane>) -> Option<Bounds<Pixels>> {
 3747        self.center.bounding_box_for_pane(pane)
 3748    }
 3749
 3750    pub fn find_pane_in_direction(
 3751        &mut self,
 3752        direction: SplitDirection,
 3753        cx: &App,
 3754    ) -> Option<Entity<Pane>> {
 3755        self.center
 3756            .find_pane_in_direction(&self.active_pane, direction, cx)
 3757            .cloned()
 3758    }
 3759
 3760    pub fn swap_pane_in_direction(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 3761        if let Some(to) = self.find_pane_in_direction(direction, cx) {
 3762            self.center.swap(&self.active_pane, &to);
 3763            cx.notify();
 3764        }
 3765    }
 3766
 3767    pub fn resize_pane(
 3768        &mut self,
 3769        axis: gpui::Axis,
 3770        amount: Pixels,
 3771        window: &mut Window,
 3772        cx: &mut Context<Self>,
 3773    ) {
 3774        let docks = self.all_docks();
 3775        let active_dock = docks
 3776            .into_iter()
 3777            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 3778
 3779        if let Some(dock) = active_dock {
 3780            let Some(panel_size) = dock.read(cx).active_panel_size(window, cx) else {
 3781                return;
 3782            };
 3783            match dock.read(cx).position() {
 3784                DockPosition::Left => self.resize_left_dock(panel_size + amount, window, cx),
 3785                DockPosition::Bottom => self.resize_bottom_dock(panel_size + amount, window, cx),
 3786                DockPosition::Right => self.resize_right_dock(panel_size + amount, window, cx),
 3787            }
 3788        } else {
 3789            self.center
 3790                .resize(&self.active_pane, axis, amount, &self.bounds);
 3791        }
 3792        cx.notify();
 3793    }
 3794
 3795    pub fn reset_pane_sizes(&mut self, cx: &mut Context<Self>) {
 3796        self.center.reset_pane_sizes();
 3797        cx.notify();
 3798    }
 3799
 3800    fn handle_pane_focused(
 3801        &mut self,
 3802        pane: Entity<Pane>,
 3803        window: &mut Window,
 3804        cx: &mut Context<Self>,
 3805    ) {
 3806        // This is explicitly hoisted out of the following check for pane identity as
 3807        // terminal panel panes are not registered as a center panes.
 3808        self.status_bar.update(cx, |status_bar, cx| {
 3809            status_bar.set_active_pane(&pane, window, cx);
 3810        });
 3811        if self.active_pane != pane {
 3812            self.set_active_pane(&pane, window, cx);
 3813        }
 3814
 3815        if self.last_active_center_pane.is_none() {
 3816            self.last_active_center_pane = Some(pane.downgrade());
 3817        }
 3818
 3819        self.dismiss_zoomed_items_to_reveal(None, window, cx);
 3820        if pane.read(cx).is_zoomed() {
 3821            self.zoomed = Some(pane.downgrade().into());
 3822        } else {
 3823            self.zoomed = None;
 3824        }
 3825        self.zoomed_position = None;
 3826        cx.emit(Event::ZoomChanged);
 3827        self.update_active_view_for_followers(window, cx);
 3828        pane.update(cx, |pane, _| {
 3829            pane.track_alternate_file_items();
 3830        });
 3831
 3832        cx.notify();
 3833    }
 3834
 3835    fn set_active_pane(
 3836        &mut self,
 3837        pane: &Entity<Pane>,
 3838        window: &mut Window,
 3839        cx: &mut Context<Self>,
 3840    ) {
 3841        self.active_pane = pane.clone();
 3842        self.active_item_path_changed(window, cx);
 3843        self.last_active_center_pane = Some(pane.downgrade());
 3844    }
 3845
 3846    fn handle_panel_focused(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3847        self.update_active_view_for_followers(window, cx);
 3848    }
 3849
 3850    fn handle_pane_event(
 3851        &mut self,
 3852        pane: &Entity<Pane>,
 3853        event: &pane::Event,
 3854        window: &mut Window,
 3855        cx: &mut Context<Self>,
 3856    ) {
 3857        let mut serialize_workspace = true;
 3858        match event {
 3859            pane::Event::AddItem { item } => {
 3860                item.added_to_pane(self, pane.clone(), window, cx);
 3861                cx.emit(Event::ItemAdded {
 3862                    item: item.boxed_clone(),
 3863                });
 3864            }
 3865            pane::Event::Split(direction) => {
 3866                self.split_and_clone(pane.clone(), *direction, window, cx);
 3867            }
 3868            pane::Event::JoinIntoNext => {
 3869                self.join_pane_into_next(pane.clone(), window, cx);
 3870            }
 3871            pane::Event::JoinAll => {
 3872                self.join_all_panes(window, cx);
 3873            }
 3874            pane::Event::Remove { focus_on_pane } => {
 3875                self.remove_pane(pane.clone(), focus_on_pane.clone(), window, cx);
 3876            }
 3877            pane::Event::ActivateItem {
 3878                local,
 3879                focus_changed,
 3880            } => {
 3881                window.invalidate_character_coordinates();
 3882
 3883                pane.update(cx, |pane, _| {
 3884                    pane.track_alternate_file_items();
 3885                });
 3886                if *local {
 3887                    self.unfollow_in_pane(pane, window, cx);
 3888                }
 3889                serialize_workspace = *focus_changed || pane != self.active_pane();
 3890                if pane == self.active_pane() {
 3891                    self.active_item_path_changed(window, cx);
 3892                    self.update_active_view_for_followers(window, cx);
 3893                } else if *local {
 3894                    self.set_active_pane(pane, window, cx);
 3895                }
 3896            }
 3897            pane::Event::UserSavedItem { item, save_intent } => {
 3898                cx.emit(Event::UserSavedItem {
 3899                    pane: pane.downgrade(),
 3900                    item: item.boxed_clone(),
 3901                    save_intent: *save_intent,
 3902                });
 3903                serialize_workspace = false;
 3904            }
 3905            pane::Event::ChangeItemTitle => {
 3906                if *pane == self.active_pane {
 3907                    self.active_item_path_changed(window, cx);
 3908                }
 3909                serialize_workspace = false;
 3910            }
 3911            pane::Event::RemoveItem { .. } => {}
 3912            pane::Event::RemovedItem { item } => {
 3913                cx.emit(Event::ActiveItemChanged);
 3914                self.update_window_edited(window, cx);
 3915                if let hash_map::Entry::Occupied(entry) = self.panes_by_item.entry(item.item_id()) {
 3916                    if entry.get().entity_id() == pane.entity_id() {
 3917                        entry.remove();
 3918                    }
 3919                }
 3920            }
 3921            pane::Event::Focus => {
 3922                window.invalidate_character_coordinates();
 3923                self.handle_pane_focused(pane.clone(), window, cx);
 3924            }
 3925            pane::Event::ZoomIn => {
 3926                if *pane == self.active_pane {
 3927                    pane.update(cx, |pane, cx| pane.set_zoomed(true, cx));
 3928                    if pane.read(cx).has_focus(window, cx) {
 3929                        self.zoomed = Some(pane.downgrade().into());
 3930                        self.zoomed_position = None;
 3931                        cx.emit(Event::ZoomChanged);
 3932                    }
 3933                    cx.notify();
 3934                }
 3935            }
 3936            pane::Event::ZoomOut => {
 3937                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 3938                if self.zoomed_position.is_none() {
 3939                    self.zoomed = None;
 3940                    cx.emit(Event::ZoomChanged);
 3941                }
 3942                cx.notify();
 3943            }
 3944            pane::Event::ItemPinned | pane::Event::ItemUnpinned => {}
 3945        }
 3946
 3947        if serialize_workspace {
 3948            self.serialize_workspace(window, cx);
 3949        }
 3950    }
 3951
 3952    pub fn unfollow_in_pane(
 3953        &mut self,
 3954        pane: &Entity<Pane>,
 3955        window: &mut Window,
 3956        cx: &mut Context<Workspace>,
 3957    ) -> Option<CollaboratorId> {
 3958        let leader_id = self.leader_for_pane(pane)?;
 3959        self.unfollow(leader_id, window, cx);
 3960        Some(leader_id)
 3961    }
 3962
 3963    pub fn split_pane(
 3964        &mut self,
 3965        pane_to_split: Entity<Pane>,
 3966        split_direction: SplitDirection,
 3967        window: &mut Window,
 3968        cx: &mut Context<Self>,
 3969    ) -> Entity<Pane> {
 3970        let new_pane = self.add_pane(window, cx);
 3971        self.center
 3972            .split(&pane_to_split, &new_pane, split_direction)
 3973            .unwrap();
 3974        cx.notify();
 3975        new_pane
 3976    }
 3977
 3978    pub fn split_and_clone(
 3979        &mut self,
 3980        pane: Entity<Pane>,
 3981        direction: SplitDirection,
 3982        window: &mut Window,
 3983        cx: &mut Context<Self>,
 3984    ) -> Option<Entity<Pane>> {
 3985        let item = pane.read(cx).active_item()?;
 3986        let maybe_pane_handle =
 3987            if let Some(clone) = item.clone_on_split(self.database_id(), window, cx) {
 3988                let new_pane = self.add_pane(window, cx);
 3989                new_pane.update(cx, |pane, cx| {
 3990                    pane.add_item(clone, true, true, None, window, cx)
 3991                });
 3992                self.center.split(&pane, &new_pane, direction).unwrap();
 3993                Some(new_pane)
 3994            } else {
 3995                None
 3996            };
 3997        cx.notify();
 3998        maybe_pane_handle
 3999    }
 4000
 4001    pub fn split_pane_with_item(
 4002        &mut self,
 4003        pane_to_split: WeakEntity<Pane>,
 4004        split_direction: SplitDirection,
 4005        from: WeakEntity<Pane>,
 4006        item_id_to_move: EntityId,
 4007        window: &mut Window,
 4008        cx: &mut Context<Self>,
 4009    ) {
 4010        let Some(pane_to_split) = pane_to_split.upgrade() else {
 4011            return;
 4012        };
 4013        let Some(from) = from.upgrade() else {
 4014            return;
 4015        };
 4016
 4017        let new_pane = self.add_pane(window, cx);
 4018        move_item(&from, &new_pane, item_id_to_move, 0, true, window, cx);
 4019        self.center
 4020            .split(&pane_to_split, &new_pane, split_direction)
 4021            .unwrap();
 4022        cx.notify();
 4023    }
 4024
 4025    pub fn split_pane_with_project_entry(
 4026        &mut self,
 4027        pane_to_split: WeakEntity<Pane>,
 4028        split_direction: SplitDirection,
 4029        project_entry: ProjectEntryId,
 4030        window: &mut Window,
 4031        cx: &mut Context<Self>,
 4032    ) -> Option<Task<Result<()>>> {
 4033        let pane_to_split = pane_to_split.upgrade()?;
 4034        let new_pane = self.add_pane(window, cx);
 4035        self.center
 4036            .split(&pane_to_split, &new_pane, split_direction)
 4037            .unwrap();
 4038
 4039        let path = self.project.read(cx).path_for_entry(project_entry, cx)?;
 4040        let task = self.open_path(path, Some(new_pane.downgrade()), true, window, cx);
 4041        Some(cx.foreground_executor().spawn(async move {
 4042            task.await?;
 4043            Ok(())
 4044        }))
 4045    }
 4046
 4047    pub fn join_all_panes(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4048        let active_item = self.active_pane.read(cx).active_item();
 4049        for pane in &self.panes {
 4050            join_pane_into_active(&self.active_pane, pane, window, cx);
 4051        }
 4052        if let Some(active_item) = active_item {
 4053            self.activate_item(active_item.as_ref(), true, true, window, cx);
 4054        }
 4055        cx.notify();
 4056    }
 4057
 4058    pub fn join_pane_into_next(
 4059        &mut self,
 4060        pane: Entity<Pane>,
 4061        window: &mut Window,
 4062        cx: &mut Context<Self>,
 4063    ) {
 4064        let next_pane = self
 4065            .find_pane_in_direction(SplitDirection::Right, cx)
 4066            .or_else(|| self.find_pane_in_direction(SplitDirection::Down, cx))
 4067            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4068            .or_else(|| self.find_pane_in_direction(SplitDirection::Up, cx));
 4069        let Some(next_pane) = next_pane else {
 4070            return;
 4071        };
 4072        move_all_items(&pane, &next_pane, window, cx);
 4073        cx.notify();
 4074    }
 4075
 4076    fn remove_pane(
 4077        &mut self,
 4078        pane: Entity<Pane>,
 4079        focus_on: Option<Entity<Pane>>,
 4080        window: &mut Window,
 4081        cx: &mut Context<Self>,
 4082    ) {
 4083        if self.center.remove(&pane).unwrap() {
 4084            self.force_remove_pane(&pane, &focus_on, window, cx);
 4085            self.unfollow_in_pane(&pane, window, cx);
 4086            self.last_leaders_by_pane.remove(&pane.downgrade());
 4087            for removed_item in pane.read(cx).items() {
 4088                self.panes_by_item.remove(&removed_item.item_id());
 4089            }
 4090
 4091            cx.notify();
 4092        } else {
 4093            self.active_item_path_changed(window, cx);
 4094        }
 4095        cx.emit(Event::PaneRemoved);
 4096    }
 4097
 4098    pub fn panes(&self) -> &[Entity<Pane>] {
 4099        &self.panes
 4100    }
 4101
 4102    pub fn active_pane(&self) -> &Entity<Pane> {
 4103        &self.active_pane
 4104    }
 4105
 4106    pub fn focused_pane(&self, window: &Window, cx: &App) -> Entity<Pane> {
 4107        for dock in self.all_docks() {
 4108            if dock.focus_handle(cx).contains_focused(window, cx) {
 4109                if let Some(pane) = dock
 4110                    .read(cx)
 4111                    .active_panel()
 4112                    .and_then(|panel| panel.pane(cx))
 4113                {
 4114                    return pane;
 4115                }
 4116            }
 4117        }
 4118        self.active_pane().clone()
 4119    }
 4120
 4121    pub fn adjacent_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 4122        self.find_pane_in_direction(SplitDirection::Right, cx)
 4123            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4124            .unwrap_or_else(|| {
 4125                self.split_pane(self.active_pane.clone(), SplitDirection::Right, window, cx)
 4126            })
 4127            .clone()
 4128    }
 4129
 4130    pub fn pane_for(&self, handle: &dyn ItemHandle) -> Option<Entity<Pane>> {
 4131        let weak_pane = self.panes_by_item.get(&handle.item_id())?;
 4132        weak_pane.upgrade()
 4133    }
 4134
 4135    fn collaborator_left(&mut self, peer_id: PeerId, window: &mut Window, cx: &mut Context<Self>) {
 4136        self.follower_states.retain(|leader_id, state| {
 4137            if *leader_id == CollaboratorId::PeerId(peer_id) {
 4138                for item in state.items_by_leader_view_id.values() {
 4139                    item.view.set_leader_id(None, window, cx);
 4140                }
 4141                false
 4142            } else {
 4143                true
 4144            }
 4145        });
 4146        cx.notify();
 4147    }
 4148
 4149    pub fn start_following(
 4150        &mut self,
 4151        leader_id: impl Into<CollaboratorId>,
 4152        window: &mut Window,
 4153        cx: &mut Context<Self>,
 4154    ) -> Option<Task<Result<()>>> {
 4155        let leader_id = leader_id.into();
 4156        let pane = self.active_pane().clone();
 4157
 4158        self.last_leaders_by_pane
 4159            .insert(pane.downgrade(), leader_id);
 4160        self.unfollow(leader_id, window, cx);
 4161        self.unfollow_in_pane(&pane, window, cx);
 4162        self.follower_states.insert(
 4163            leader_id,
 4164            FollowerState {
 4165                center_pane: pane.clone(),
 4166                dock_pane: None,
 4167                active_view_id: None,
 4168                items_by_leader_view_id: Default::default(),
 4169            },
 4170        );
 4171        cx.notify();
 4172
 4173        match leader_id {
 4174            CollaboratorId::PeerId(leader_peer_id) => {
 4175                let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4176                let project_id = self.project.read(cx).remote_id();
 4177                let request = self.app_state.client.request(proto::Follow {
 4178                    room_id,
 4179                    project_id,
 4180                    leader_id: Some(leader_peer_id),
 4181                });
 4182
 4183                Some(cx.spawn_in(window, async move |this, cx| {
 4184                    let response = request.await?;
 4185                    this.update(cx, |this, _| {
 4186                        let state = this
 4187                            .follower_states
 4188                            .get_mut(&leader_id)
 4189                            .context("following interrupted")?;
 4190                        state.active_view_id = response
 4191                            .active_view
 4192                            .as_ref()
 4193                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4194                        anyhow::Ok(())
 4195                    })??;
 4196                    if let Some(view) = response.active_view {
 4197                        Self::add_view_from_leader(this.clone(), leader_peer_id, &view, cx).await?;
 4198                    }
 4199                    this.update_in(cx, |this, window, cx| {
 4200                        this.leader_updated(leader_id, window, cx)
 4201                    })?;
 4202                    Ok(())
 4203                }))
 4204            }
 4205            CollaboratorId::Agent => {
 4206                self.leader_updated(leader_id, window, cx)?;
 4207                Some(Task::ready(Ok(())))
 4208            }
 4209        }
 4210    }
 4211
 4212    pub fn follow_next_collaborator(
 4213        &mut self,
 4214        _: &FollowNextCollaborator,
 4215        window: &mut Window,
 4216        cx: &mut Context<Self>,
 4217    ) {
 4218        let collaborators = self.project.read(cx).collaborators();
 4219        let next_leader_id = if let Some(leader_id) = self.leader_for_pane(&self.active_pane) {
 4220            let mut collaborators = collaborators.keys().copied();
 4221            for peer_id in collaborators.by_ref() {
 4222                if CollaboratorId::PeerId(peer_id) == leader_id {
 4223                    break;
 4224                }
 4225            }
 4226            collaborators.next().map(CollaboratorId::PeerId)
 4227        } else if let Some(last_leader_id) =
 4228            self.last_leaders_by_pane.get(&self.active_pane.downgrade())
 4229        {
 4230            match last_leader_id {
 4231                CollaboratorId::PeerId(peer_id) => {
 4232                    if collaborators.contains_key(peer_id) {
 4233                        Some(*last_leader_id)
 4234                    } else {
 4235                        None
 4236                    }
 4237                }
 4238                CollaboratorId::Agent => Some(CollaboratorId::Agent),
 4239            }
 4240        } else {
 4241            None
 4242        };
 4243
 4244        let pane = self.active_pane.clone();
 4245        let Some(leader_id) = next_leader_id.or_else(|| {
 4246            Some(CollaboratorId::PeerId(
 4247                collaborators.keys().copied().next()?,
 4248            ))
 4249        }) else {
 4250            return;
 4251        };
 4252        if self.unfollow_in_pane(&pane, window, cx) == Some(leader_id) {
 4253            return;
 4254        }
 4255        if let Some(task) = self.start_following(leader_id, window, cx) {
 4256            task.detach_and_log_err(cx)
 4257        }
 4258    }
 4259
 4260    pub fn follow(
 4261        &mut self,
 4262        leader_id: impl Into<CollaboratorId>,
 4263        window: &mut Window,
 4264        cx: &mut Context<Self>,
 4265    ) {
 4266        let leader_id = leader_id.into();
 4267
 4268        if let CollaboratorId::PeerId(peer_id) = leader_id {
 4269            let Some(room) = ActiveCall::global(cx).read(cx).room() else {
 4270                return;
 4271            };
 4272            let room = room.read(cx);
 4273            let Some(remote_participant) = room.remote_participant_for_peer_id(peer_id) else {
 4274                return;
 4275            };
 4276
 4277            let project = self.project.read(cx);
 4278
 4279            let other_project_id = match remote_participant.location {
 4280                call::ParticipantLocation::External => None,
 4281                call::ParticipantLocation::UnsharedProject => None,
 4282                call::ParticipantLocation::SharedProject { project_id } => {
 4283                    if Some(project_id) == project.remote_id() {
 4284                        None
 4285                    } else {
 4286                        Some(project_id)
 4287                    }
 4288                }
 4289            };
 4290
 4291            // if they are active in another project, follow there.
 4292            if let Some(project_id) = other_project_id {
 4293                let app_state = self.app_state.clone();
 4294                crate::join_in_room_project(project_id, remote_participant.user.id, app_state, cx)
 4295                    .detach_and_log_err(cx);
 4296            }
 4297        }
 4298
 4299        // if you're already following, find the right pane and focus it.
 4300        if let Some(follower_state) = self.follower_states.get(&leader_id) {
 4301            window.focus(&follower_state.pane().focus_handle(cx));
 4302
 4303            return;
 4304        }
 4305
 4306        // Otherwise, follow.
 4307        if let Some(task) = self.start_following(leader_id, window, cx) {
 4308            task.detach_and_log_err(cx)
 4309        }
 4310    }
 4311
 4312    pub fn unfollow(
 4313        &mut self,
 4314        leader_id: impl Into<CollaboratorId>,
 4315        window: &mut Window,
 4316        cx: &mut Context<Self>,
 4317    ) -> Option<()> {
 4318        cx.notify();
 4319
 4320        let leader_id = leader_id.into();
 4321        let state = self.follower_states.remove(&leader_id)?;
 4322        for (_, item) in state.items_by_leader_view_id {
 4323            item.view.set_leader_id(None, window, cx);
 4324        }
 4325
 4326        if let CollaboratorId::PeerId(leader_peer_id) = leader_id {
 4327            let project_id = self.project.read(cx).remote_id();
 4328            let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4329            self.app_state
 4330                .client
 4331                .send(proto::Unfollow {
 4332                    room_id,
 4333                    project_id,
 4334                    leader_id: Some(leader_peer_id),
 4335                })
 4336                .log_err();
 4337        }
 4338
 4339        Some(())
 4340    }
 4341
 4342    pub fn is_being_followed(&self, id: impl Into<CollaboratorId>) -> bool {
 4343        self.follower_states.contains_key(&id.into())
 4344    }
 4345
 4346    fn active_item_path_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4347        cx.emit(Event::ActiveItemChanged);
 4348        let active_entry = self.active_project_path(cx);
 4349        self.project
 4350            .update(cx, |project, cx| project.set_active_path(active_entry, cx));
 4351
 4352        self.update_window_title(window, cx);
 4353    }
 4354
 4355    fn update_window_title(&mut self, window: &mut Window, cx: &mut App) {
 4356        let project = self.project().read(cx);
 4357        let mut title = String::new();
 4358
 4359        for (i, name) in project.worktree_root_names(cx).enumerate() {
 4360            if i > 0 {
 4361                title.push_str(", ");
 4362            }
 4363            title.push_str(name);
 4364        }
 4365
 4366        if title.is_empty() {
 4367            title = "empty project".to_string();
 4368        }
 4369
 4370        if let Some(path) = self.active_item(cx).and_then(|item| item.project_path(cx)) {
 4371            let filename = path
 4372                .path
 4373                .file_name()
 4374                .map(|s| s.to_string_lossy())
 4375                .or_else(|| {
 4376                    Some(Cow::Borrowed(
 4377                        project
 4378                            .worktree_for_id(path.worktree_id, cx)?
 4379                            .read(cx)
 4380                            .root_name(),
 4381                    ))
 4382                });
 4383
 4384            if let Some(filename) = filename {
 4385                title.push_str("");
 4386                title.push_str(filename.as_ref());
 4387            }
 4388        }
 4389
 4390        if project.is_via_collab() {
 4391            title.push_str("");
 4392        } else if project.is_shared() {
 4393            title.push_str("");
 4394        }
 4395
 4396        if let Some(last_title) = self.last_window_title.as_ref() {
 4397            if &title == last_title {
 4398                return;
 4399            }
 4400        }
 4401        window.set_window_title(&title);
 4402        self.last_window_title = Some(title);
 4403    }
 4404
 4405    fn update_window_edited(&mut self, window: &mut Window, cx: &mut App) {
 4406        let is_edited = !self.project.read(cx).is_disconnected(cx) && !self.dirty_items.is_empty();
 4407        if is_edited != self.window_edited {
 4408            self.window_edited = is_edited;
 4409            window.set_window_edited(self.window_edited)
 4410        }
 4411    }
 4412
 4413    fn update_item_dirty_state(
 4414        &mut self,
 4415        item: &dyn ItemHandle,
 4416        window: &mut Window,
 4417        cx: &mut App,
 4418    ) {
 4419        let is_dirty = item.is_dirty(cx);
 4420        let item_id = item.item_id();
 4421        let was_dirty = self.dirty_items.contains_key(&item_id);
 4422        if is_dirty == was_dirty {
 4423            return;
 4424        }
 4425        if was_dirty {
 4426            self.dirty_items.remove(&item_id);
 4427            self.update_window_edited(window, cx);
 4428            return;
 4429        }
 4430        if let Some(window_handle) = window.window_handle().downcast::<Self>() {
 4431            let s = item.on_release(
 4432                cx,
 4433                Box::new(move |cx| {
 4434                    window_handle
 4435                        .update(cx, |this, window, cx| {
 4436                            this.dirty_items.remove(&item_id);
 4437                            this.update_window_edited(window, cx)
 4438                        })
 4439                        .ok();
 4440                }),
 4441            );
 4442            self.dirty_items.insert(item_id, s);
 4443            self.update_window_edited(window, cx);
 4444        }
 4445    }
 4446
 4447    fn render_notifications(&self, _window: &mut Window, _cx: &mut Context<Self>) -> Option<Div> {
 4448        if self.notifications.is_empty() {
 4449            None
 4450        } else {
 4451            Some(
 4452                div()
 4453                    .absolute()
 4454                    .right_3()
 4455                    .bottom_3()
 4456                    .w_112()
 4457                    .h_full()
 4458                    .flex()
 4459                    .flex_col()
 4460                    .justify_end()
 4461                    .gap_2()
 4462                    .children(
 4463                        self.notifications
 4464                            .iter()
 4465                            .map(|(_, notification)| notification.clone().into_any()),
 4466                    ),
 4467            )
 4468        }
 4469    }
 4470
 4471    // RPC handlers
 4472
 4473    fn active_view_for_follower(
 4474        &self,
 4475        follower_project_id: Option<u64>,
 4476        window: &mut Window,
 4477        cx: &mut Context<Self>,
 4478    ) -> Option<proto::View> {
 4479        let (item, panel_id) = self.active_item_for_followers(window, cx);
 4480        let item = item?;
 4481        let leader_id = self
 4482            .pane_for(&*item)
 4483            .and_then(|pane| self.leader_for_pane(&pane));
 4484        let leader_peer_id = match leader_id {
 4485            Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4486            Some(CollaboratorId::Agent) | None => None,
 4487        };
 4488
 4489        let item_handle = item.to_followable_item_handle(cx)?;
 4490        let id = item_handle.remote_id(&self.app_state.client, window, cx)?;
 4491        let variant = item_handle.to_state_proto(window, cx)?;
 4492
 4493        if item_handle.is_project_item(window, cx)
 4494            && (follower_project_id.is_none()
 4495                || follower_project_id != self.project.read(cx).remote_id())
 4496        {
 4497            return None;
 4498        }
 4499
 4500        Some(proto::View {
 4501            id: id.to_proto(),
 4502            leader_id: leader_peer_id,
 4503            variant: Some(variant),
 4504            panel_id: panel_id.map(|id| id as i32),
 4505        })
 4506    }
 4507
 4508    fn handle_follow(
 4509        &mut self,
 4510        follower_project_id: Option<u64>,
 4511        window: &mut Window,
 4512        cx: &mut Context<Self>,
 4513    ) -> proto::FollowResponse {
 4514        let active_view = self.active_view_for_follower(follower_project_id, window, cx);
 4515
 4516        cx.notify();
 4517        proto::FollowResponse {
 4518            // TODO: Remove after version 0.145.x stabilizes.
 4519            active_view_id: active_view.as_ref().and_then(|view| view.id.clone()),
 4520            views: active_view.iter().cloned().collect(),
 4521            active_view,
 4522        }
 4523    }
 4524
 4525    fn handle_update_followers(
 4526        &mut self,
 4527        leader_id: PeerId,
 4528        message: proto::UpdateFollowers,
 4529        _window: &mut Window,
 4530        _cx: &mut Context<Self>,
 4531    ) {
 4532        self.leader_updates_tx
 4533            .unbounded_send((leader_id, message))
 4534            .ok();
 4535    }
 4536
 4537    async fn process_leader_update(
 4538        this: &WeakEntity<Self>,
 4539        leader_id: PeerId,
 4540        update: proto::UpdateFollowers,
 4541        cx: &mut AsyncWindowContext,
 4542    ) -> Result<()> {
 4543        match update.variant.context("invalid update")? {
 4544            proto::update_followers::Variant::CreateView(view) => {
 4545                let view_id = ViewId::from_proto(view.id.clone().context("invalid view id")?)?;
 4546                let should_add_view = this.update(cx, |this, _| {
 4547                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4548                        anyhow::Ok(!state.items_by_leader_view_id.contains_key(&view_id))
 4549                    } else {
 4550                        anyhow::Ok(false)
 4551                    }
 4552                })??;
 4553
 4554                if should_add_view {
 4555                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4556                }
 4557            }
 4558            proto::update_followers::Variant::UpdateActiveView(update_active_view) => {
 4559                let should_add_view = this.update(cx, |this, _| {
 4560                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4561                        state.active_view_id = update_active_view
 4562                            .view
 4563                            .as_ref()
 4564                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4565
 4566                        if state.active_view_id.is_some_and(|view_id| {
 4567                            !state.items_by_leader_view_id.contains_key(&view_id)
 4568                        }) {
 4569                            anyhow::Ok(true)
 4570                        } else {
 4571                            anyhow::Ok(false)
 4572                        }
 4573                    } else {
 4574                        anyhow::Ok(false)
 4575                    }
 4576                })??;
 4577
 4578                if should_add_view {
 4579                    if let Some(view) = update_active_view.view {
 4580                        Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4581                    }
 4582                }
 4583            }
 4584            proto::update_followers::Variant::UpdateView(update_view) => {
 4585                let variant = update_view.variant.context("missing update view variant")?;
 4586                let id = update_view.id.context("missing update view id")?;
 4587                let mut tasks = Vec::new();
 4588                this.update_in(cx, |this, window, cx| {
 4589                    let project = this.project.clone();
 4590                    if let Some(state) = this.follower_states.get(&leader_id.into()) {
 4591                        let view_id = ViewId::from_proto(id.clone())?;
 4592                        if let Some(item) = state.items_by_leader_view_id.get(&view_id) {
 4593                            tasks.push(item.view.apply_update_proto(
 4594                                &project,
 4595                                variant.clone(),
 4596                                window,
 4597                                cx,
 4598                            ));
 4599                        }
 4600                    }
 4601                    anyhow::Ok(())
 4602                })??;
 4603                try_join_all(tasks).await.log_err();
 4604            }
 4605        }
 4606        this.update_in(cx, |this, window, cx| {
 4607            this.leader_updated(leader_id, window, cx)
 4608        })?;
 4609        Ok(())
 4610    }
 4611
 4612    async fn add_view_from_leader(
 4613        this: WeakEntity<Self>,
 4614        leader_id: PeerId,
 4615        view: &proto::View,
 4616        cx: &mut AsyncWindowContext,
 4617    ) -> Result<()> {
 4618        let this = this.upgrade().context("workspace dropped")?;
 4619
 4620        let Some(id) = view.id.clone() else {
 4621            anyhow::bail!("no id for view");
 4622        };
 4623        let id = ViewId::from_proto(id)?;
 4624        let panel_id = view.panel_id.and_then(proto::PanelId::from_i32);
 4625
 4626        let pane = this.update(cx, |this, _cx| {
 4627            let state = this
 4628                .follower_states
 4629                .get(&leader_id.into())
 4630                .context("stopped following")?;
 4631            anyhow::Ok(state.pane().clone())
 4632        })??;
 4633        let existing_item = pane.update_in(cx, |pane, window, cx| {
 4634            let client = this.read(cx).client().clone();
 4635            pane.items().find_map(|item| {
 4636                let item = item.to_followable_item_handle(cx)?;
 4637                if item.remote_id(&client, window, cx) == Some(id) {
 4638                    Some(item)
 4639                } else {
 4640                    None
 4641                }
 4642            })
 4643        })?;
 4644        let item = if let Some(existing_item) = existing_item {
 4645            existing_item
 4646        } else {
 4647            let variant = view.variant.clone();
 4648            anyhow::ensure!(variant.is_some(), "missing view variant");
 4649
 4650            let task = cx.update(|window, cx| {
 4651                FollowableViewRegistry::from_state_proto(this.clone(), id, variant, window, cx)
 4652            })?;
 4653
 4654            let Some(task) = task else {
 4655                anyhow::bail!(
 4656                    "failed to construct view from leader (maybe from a different version of zed?)"
 4657                );
 4658            };
 4659
 4660            let mut new_item = task.await?;
 4661            pane.update_in(cx, |pane, window, cx| {
 4662                let mut item_to_remove = None;
 4663                for (ix, item) in pane.items().enumerate() {
 4664                    if let Some(item) = item.to_followable_item_handle(cx) {
 4665                        match new_item.dedup(item.as_ref(), window, cx) {
 4666                            Some(item::Dedup::KeepExisting) => {
 4667                                new_item =
 4668                                    item.boxed_clone().to_followable_item_handle(cx).unwrap();
 4669                                break;
 4670                            }
 4671                            Some(item::Dedup::ReplaceExisting) => {
 4672                                item_to_remove = Some((ix, item.item_id()));
 4673                                break;
 4674                            }
 4675                            None => {}
 4676                        }
 4677                    }
 4678                }
 4679
 4680                if let Some((ix, id)) = item_to_remove {
 4681                    pane.remove_item(id, false, false, window, cx);
 4682                    pane.add_item(new_item.boxed_clone(), false, false, Some(ix), window, cx);
 4683                }
 4684            })?;
 4685
 4686            new_item
 4687        };
 4688
 4689        this.update_in(cx, |this, window, cx| {
 4690            let state = this.follower_states.get_mut(&leader_id.into())?;
 4691            item.set_leader_id(Some(leader_id.into()), window, cx);
 4692            state.items_by_leader_view_id.insert(
 4693                id,
 4694                FollowerView {
 4695                    view: item,
 4696                    location: panel_id,
 4697                },
 4698            );
 4699
 4700            Some(())
 4701        })?;
 4702
 4703        Ok(())
 4704    }
 4705
 4706    fn handle_agent_location_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4707        let Some(follower_state) = self.follower_states.get_mut(&CollaboratorId::Agent) else {
 4708            return;
 4709        };
 4710
 4711        if let Some(agent_location) = self.project.read(cx).agent_location() {
 4712            let buffer_entity_id = agent_location.buffer.entity_id();
 4713            let view_id = ViewId {
 4714                creator: CollaboratorId::Agent,
 4715                id: buffer_entity_id.as_u64(),
 4716            };
 4717            follower_state.active_view_id = Some(view_id);
 4718
 4719            let item = match follower_state.items_by_leader_view_id.entry(view_id) {
 4720                hash_map::Entry::Occupied(entry) => Some(entry.into_mut()),
 4721                hash_map::Entry::Vacant(entry) => {
 4722                    let existing_view =
 4723                        follower_state
 4724                            .center_pane
 4725                            .read(cx)
 4726                            .items()
 4727                            .find_map(|item| {
 4728                                let item = item.to_followable_item_handle(cx)?;
 4729                                if item.is_singleton(cx)
 4730                                    && item.project_item_model_ids(cx).as_slice()
 4731                                        == [buffer_entity_id]
 4732                                {
 4733                                    Some(item)
 4734                                } else {
 4735                                    None
 4736                                }
 4737                            });
 4738                    let view = existing_view.or_else(|| {
 4739                        agent_location.buffer.upgrade().and_then(|buffer| {
 4740                            cx.update_default_global(|registry: &mut ProjectItemRegistry, cx| {
 4741                                registry.build_item(buffer, self.project.clone(), None, window, cx)
 4742                            })?
 4743                            .to_followable_item_handle(cx)
 4744                        })
 4745                    });
 4746
 4747                    if let Some(view) = view {
 4748                        Some(entry.insert(FollowerView {
 4749                            view,
 4750                            location: None,
 4751                        }))
 4752                    } else {
 4753                        None
 4754                    }
 4755                }
 4756            };
 4757
 4758            if let Some(item) = item {
 4759                item.view
 4760                    .set_leader_id(Some(CollaboratorId::Agent), window, cx);
 4761                item.view
 4762                    .update_agent_location(agent_location.position, window, cx);
 4763            }
 4764        } else {
 4765            follower_state.active_view_id = None;
 4766        }
 4767
 4768        self.leader_updated(CollaboratorId::Agent, window, cx);
 4769    }
 4770
 4771    pub fn update_active_view_for_followers(&mut self, window: &mut Window, cx: &mut App) {
 4772        let mut is_project_item = true;
 4773        let mut update = proto::UpdateActiveView::default();
 4774        if window.is_window_active() {
 4775            let (active_item, panel_id) = self.active_item_for_followers(window, cx);
 4776
 4777            if let Some(item) = active_item {
 4778                if item.item_focus_handle(cx).contains_focused(window, cx) {
 4779                    let leader_id = self
 4780                        .pane_for(&*item)
 4781                        .and_then(|pane| self.leader_for_pane(&pane));
 4782                    let leader_peer_id = match leader_id {
 4783                        Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4784                        Some(CollaboratorId::Agent) | None => None,
 4785                    };
 4786
 4787                    if let Some(item) = item.to_followable_item_handle(cx) {
 4788                        let id = item
 4789                            .remote_id(&self.app_state.client, window, cx)
 4790                            .map(|id| id.to_proto());
 4791
 4792                        if let Some(id) = id {
 4793                            if let Some(variant) = item.to_state_proto(window, cx) {
 4794                                let view = Some(proto::View {
 4795                                    id: id.clone(),
 4796                                    leader_id: leader_peer_id,
 4797                                    variant: Some(variant),
 4798                                    panel_id: panel_id.map(|id| id as i32),
 4799                                });
 4800
 4801                                is_project_item = item.is_project_item(window, cx);
 4802                                update = proto::UpdateActiveView {
 4803                                    view,
 4804                                    // TODO: Remove after version 0.145.x stabilizes.
 4805                                    id,
 4806                                    leader_id: leader_peer_id,
 4807                                };
 4808                            }
 4809                        };
 4810                    }
 4811                }
 4812            }
 4813        }
 4814
 4815        let active_view_id = update.view.as_ref().and_then(|view| view.id.as_ref());
 4816        if active_view_id != self.last_active_view_id.as_ref() {
 4817            self.last_active_view_id = active_view_id.cloned();
 4818            self.update_followers(
 4819                is_project_item,
 4820                proto::update_followers::Variant::UpdateActiveView(update),
 4821                window,
 4822                cx,
 4823            );
 4824        }
 4825    }
 4826
 4827    fn active_item_for_followers(
 4828        &self,
 4829        window: &mut Window,
 4830        cx: &mut App,
 4831    ) -> (Option<Box<dyn ItemHandle>>, Option<proto::PanelId>) {
 4832        let mut active_item = None;
 4833        let mut panel_id = None;
 4834        for dock in self.all_docks() {
 4835            if dock.focus_handle(cx).contains_focused(window, cx) {
 4836                if let Some(panel) = dock.read(cx).active_panel() {
 4837                    if let Some(pane) = panel.pane(cx) {
 4838                        if let Some(item) = pane.read(cx).active_item() {
 4839                            active_item = Some(item);
 4840                            panel_id = panel.remote_id();
 4841                            break;
 4842                        }
 4843                    }
 4844                }
 4845            }
 4846        }
 4847
 4848        if active_item.is_none() {
 4849            active_item = self.active_pane().read(cx).active_item();
 4850        }
 4851        (active_item, panel_id)
 4852    }
 4853
 4854    fn update_followers(
 4855        &self,
 4856        project_only: bool,
 4857        update: proto::update_followers::Variant,
 4858        _: &mut Window,
 4859        cx: &mut App,
 4860    ) -> Option<()> {
 4861        // If this update only applies to for followers in the current project,
 4862        // then skip it unless this project is shared. If it applies to all
 4863        // followers, regardless of project, then set `project_id` to none,
 4864        // indicating that it goes to all followers.
 4865        let project_id = if project_only {
 4866            Some(self.project.read(cx).remote_id()?)
 4867        } else {
 4868            None
 4869        };
 4870        self.app_state().workspace_store.update(cx, |store, cx| {
 4871            store.update_followers(project_id, update, cx)
 4872        })
 4873    }
 4874
 4875    pub fn leader_for_pane(&self, pane: &Entity<Pane>) -> Option<CollaboratorId> {
 4876        self.follower_states.iter().find_map(|(leader_id, state)| {
 4877            if state.center_pane == *pane || state.dock_pane.as_ref() == Some(pane) {
 4878                Some(*leader_id)
 4879            } else {
 4880                None
 4881            }
 4882        })
 4883    }
 4884
 4885    fn leader_updated(
 4886        &mut self,
 4887        leader_id: impl Into<CollaboratorId>,
 4888        window: &mut Window,
 4889        cx: &mut Context<Self>,
 4890    ) -> Option<Box<dyn ItemHandle>> {
 4891        cx.notify();
 4892
 4893        let leader_id = leader_id.into();
 4894        let (panel_id, item) = match leader_id {
 4895            CollaboratorId::PeerId(peer_id) => self.active_item_for_peer(peer_id, window, cx)?,
 4896            CollaboratorId::Agent => (None, self.active_item_for_agent()?),
 4897        };
 4898
 4899        let state = self.follower_states.get(&leader_id)?;
 4900        let mut transfer_focus = state.center_pane.read(cx).has_focus(window, cx);
 4901        let pane;
 4902        if let Some(panel_id) = panel_id {
 4903            pane = self
 4904                .activate_panel_for_proto_id(panel_id, window, cx)?
 4905                .pane(cx)?;
 4906            let state = self.follower_states.get_mut(&leader_id)?;
 4907            state.dock_pane = Some(pane.clone());
 4908        } else {
 4909            pane = state.center_pane.clone();
 4910            let state = self.follower_states.get_mut(&leader_id)?;
 4911            if let Some(dock_pane) = state.dock_pane.take() {
 4912                transfer_focus |= dock_pane.focus_handle(cx).contains_focused(window, cx);
 4913            }
 4914        }
 4915
 4916        pane.update(cx, |pane, cx| {
 4917            let focus_active_item = pane.has_focus(window, cx) || transfer_focus;
 4918            if let Some(index) = pane.index_for_item(item.as_ref()) {
 4919                pane.activate_item(index, false, false, window, cx);
 4920            } else {
 4921                pane.add_item(item.boxed_clone(), false, false, None, window, cx)
 4922            }
 4923
 4924            if focus_active_item {
 4925                pane.focus_active_item(window, cx)
 4926            }
 4927        });
 4928
 4929        Some(item)
 4930    }
 4931
 4932    fn active_item_for_agent(&self) -> Option<Box<dyn ItemHandle>> {
 4933        let state = self.follower_states.get(&CollaboratorId::Agent)?;
 4934        let active_view_id = state.active_view_id?;
 4935        Some(
 4936            state
 4937                .items_by_leader_view_id
 4938                .get(&active_view_id)?
 4939                .view
 4940                .boxed_clone(),
 4941        )
 4942    }
 4943
 4944    fn active_item_for_peer(
 4945        &self,
 4946        peer_id: PeerId,
 4947        window: &mut Window,
 4948        cx: &mut Context<Self>,
 4949    ) -> Option<(Option<PanelId>, Box<dyn ItemHandle>)> {
 4950        let call = self.active_call()?;
 4951        let room = call.read(cx).room()?.read(cx);
 4952        let participant = room.remote_participant_for_peer_id(peer_id)?;
 4953        let leader_in_this_app;
 4954        let leader_in_this_project;
 4955        match participant.location {
 4956            call::ParticipantLocation::SharedProject { project_id } => {
 4957                leader_in_this_app = true;
 4958                leader_in_this_project = Some(project_id) == self.project.read(cx).remote_id();
 4959            }
 4960            call::ParticipantLocation::UnsharedProject => {
 4961                leader_in_this_app = true;
 4962                leader_in_this_project = false;
 4963            }
 4964            call::ParticipantLocation::External => {
 4965                leader_in_this_app = false;
 4966                leader_in_this_project = false;
 4967            }
 4968        };
 4969        let state = self.follower_states.get(&peer_id.into())?;
 4970        let mut item_to_activate = None;
 4971        if let (Some(active_view_id), true) = (state.active_view_id, leader_in_this_app) {
 4972            if let Some(item) = state.items_by_leader_view_id.get(&active_view_id) {
 4973                if leader_in_this_project || !item.view.is_project_item(window, cx) {
 4974                    item_to_activate = Some((item.location, item.view.boxed_clone()));
 4975                }
 4976            }
 4977        } else if let Some(shared_screen) =
 4978            self.shared_screen_for_peer(peer_id, &state.center_pane, window, cx)
 4979        {
 4980            item_to_activate = Some((None, Box::new(shared_screen)));
 4981        }
 4982        item_to_activate
 4983    }
 4984
 4985    fn shared_screen_for_peer(
 4986        &self,
 4987        peer_id: PeerId,
 4988        pane: &Entity<Pane>,
 4989        window: &mut Window,
 4990        cx: &mut App,
 4991    ) -> Option<Entity<SharedScreen>> {
 4992        let call = self.active_call()?;
 4993        let room = call.read(cx).room()?.clone();
 4994        let participant = room.read(cx).remote_participant_for_peer_id(peer_id)?;
 4995        let track = participant.video_tracks.values().next()?.clone();
 4996        let user = participant.user.clone();
 4997
 4998        for item in pane.read(cx).items_of_type::<SharedScreen>() {
 4999            if item.read(cx).peer_id == peer_id {
 5000                return Some(item);
 5001            }
 5002        }
 5003
 5004        Some(cx.new(|cx| SharedScreen::new(track, peer_id, user.clone(), room.clone(), window, cx)))
 5005    }
 5006
 5007    pub fn on_window_activation_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5008        if window.is_window_active() {
 5009            self.update_active_view_for_followers(window, cx);
 5010
 5011            if let Some(database_id) = self.database_id {
 5012                cx.background_spawn(persistence::DB.update_timestamp(database_id))
 5013                    .detach();
 5014            }
 5015        } else {
 5016            for pane in &self.panes {
 5017                pane.update(cx, |pane, cx| {
 5018                    if let Some(item) = pane.active_item() {
 5019                        item.workspace_deactivated(window, cx);
 5020                    }
 5021                    for item in pane.items() {
 5022                        if matches!(
 5023                            item.workspace_settings(cx).autosave,
 5024                            AutosaveSetting::OnWindowChange | AutosaveSetting::OnFocusChange
 5025                        ) {
 5026                            Pane::autosave_item(item.as_ref(), self.project.clone(), window, cx)
 5027                                .detach_and_log_err(cx);
 5028                        }
 5029                    }
 5030                });
 5031            }
 5032        }
 5033    }
 5034
 5035    pub fn active_call(&self) -> Option<&Entity<ActiveCall>> {
 5036        self.active_call.as_ref().map(|(call, _)| call)
 5037    }
 5038
 5039    fn on_active_call_event(
 5040        &mut self,
 5041        _: &Entity<ActiveCall>,
 5042        event: &call::room::Event,
 5043        window: &mut Window,
 5044        cx: &mut Context<Self>,
 5045    ) {
 5046        match event {
 5047            call::room::Event::ParticipantLocationChanged { participant_id }
 5048            | call::room::Event::RemoteVideoTracksChanged { participant_id } => {
 5049                self.leader_updated(participant_id, window, cx);
 5050            }
 5051            _ => {}
 5052        }
 5053    }
 5054
 5055    pub fn database_id(&self) -> Option<WorkspaceId> {
 5056        self.database_id
 5057    }
 5058
 5059    pub fn session_id(&self) -> Option<String> {
 5060        self.session_id.clone()
 5061    }
 5062
 5063    fn local_paths(&self, cx: &App) -> Option<Vec<Arc<Path>>> {
 5064        let project = self.project().read(cx);
 5065
 5066        if project.is_local() {
 5067            Some(
 5068                project
 5069                    .visible_worktrees(cx)
 5070                    .map(|worktree| worktree.read(cx).abs_path())
 5071                    .collect::<Vec<_>>(),
 5072            )
 5073        } else {
 5074            None
 5075        }
 5076    }
 5077
 5078    fn update_ssh_paths(&mut self, cx: &App) {
 5079        let project = self.project().read(cx);
 5080        if !project.is_local() {
 5081            let paths: Vec<String> = project
 5082                .visible_worktrees(cx)
 5083                .map(|worktree| worktree.read(cx).abs_path().to_string_lossy().to_string())
 5084                .collect();
 5085            if let Some(ssh_project) = &mut self.serialized_ssh_project {
 5086                ssh_project.paths = paths;
 5087            }
 5088        }
 5089    }
 5090
 5091    fn serialize_ssh_paths(&mut self, window: &mut Window, cx: &mut Context<Workspace>) {
 5092        if self._schedule_serialize_ssh_paths.is_none() {
 5093            self._schedule_serialize_ssh_paths =
 5094                Some(cx.spawn_in(window, async move |this, cx| {
 5095                    cx.background_executor()
 5096                        .timer(SERIALIZATION_THROTTLE_TIME)
 5097                        .await;
 5098                    this.update_in(cx, |this, window, cx| {
 5099                        let task = if let Some(ssh_project) = &this.serialized_ssh_project {
 5100                            let ssh_project_id = ssh_project.id;
 5101                            let ssh_project_paths = ssh_project.paths.clone();
 5102                            window.spawn(cx, async move |_| {
 5103                                persistence::DB
 5104                                    .update_ssh_project_paths(ssh_project_id, ssh_project_paths)
 5105                                    .await
 5106                            })
 5107                        } else {
 5108                            Task::ready(Err(anyhow::anyhow!("No SSH project to serialize")))
 5109                        };
 5110                        task.detach();
 5111                        this._schedule_serialize_ssh_paths.take();
 5112                    })
 5113                    .log_err();
 5114                }));
 5115        }
 5116    }
 5117
 5118    fn remove_panes(&mut self, member: Member, window: &mut Window, cx: &mut Context<Workspace>) {
 5119        match member {
 5120            Member::Axis(PaneAxis { members, .. }) => {
 5121                for child in members.iter() {
 5122                    self.remove_panes(child.clone(), window, cx)
 5123                }
 5124            }
 5125            Member::Pane(pane) => {
 5126                self.force_remove_pane(&pane, &None, window, cx);
 5127            }
 5128        }
 5129    }
 5130
 5131    fn remove_from_session(&mut self, window: &mut Window, cx: &mut App) -> Task<()> {
 5132        self.session_id.take();
 5133        self.serialize_workspace_internal(window, cx)
 5134    }
 5135
 5136    fn force_remove_pane(
 5137        &mut self,
 5138        pane: &Entity<Pane>,
 5139        focus_on: &Option<Entity<Pane>>,
 5140        window: &mut Window,
 5141        cx: &mut Context<Workspace>,
 5142    ) {
 5143        self.panes.retain(|p| p != pane);
 5144        if let Some(focus_on) = focus_on {
 5145            focus_on.update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5146        } else {
 5147            if self.active_pane() == pane {
 5148                self.panes
 5149                    .last()
 5150                    .unwrap()
 5151                    .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5152            }
 5153        }
 5154        if self.last_active_center_pane == Some(pane.downgrade()) {
 5155            self.last_active_center_pane = None;
 5156        }
 5157        cx.notify();
 5158    }
 5159
 5160    fn serialize_workspace(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5161        if self._schedule_serialize_workspace.is_none() {
 5162            self._schedule_serialize_workspace =
 5163                Some(cx.spawn_in(window, async move |this, cx| {
 5164                    cx.background_executor()
 5165                        .timer(SERIALIZATION_THROTTLE_TIME)
 5166                        .await;
 5167                    this.update_in(cx, |this, window, cx| {
 5168                        this.serialize_workspace_internal(window, cx).detach();
 5169                        this._schedule_serialize_workspace.take();
 5170                    })
 5171                    .log_err();
 5172                }));
 5173        }
 5174    }
 5175
 5176    fn serialize_workspace_internal(&self, window: &mut Window, cx: &mut App) -> Task<()> {
 5177        let Some(database_id) = self.database_id() else {
 5178            return Task::ready(());
 5179        };
 5180
 5181        fn serialize_pane_handle(
 5182            pane_handle: &Entity<Pane>,
 5183            window: &mut Window,
 5184            cx: &mut App,
 5185        ) -> SerializedPane {
 5186            let (items, active, pinned_count) = {
 5187                let pane = pane_handle.read(cx);
 5188                let active_item_id = pane.active_item().map(|item| item.item_id());
 5189                (
 5190                    pane.items()
 5191                        .filter_map(|handle| {
 5192                            let handle = handle.to_serializable_item_handle(cx)?;
 5193
 5194                            Some(SerializedItem {
 5195                                kind: Arc::from(handle.serialized_item_kind()),
 5196                                item_id: handle.item_id().as_u64(),
 5197                                active: Some(handle.item_id()) == active_item_id,
 5198                                preview: pane.is_active_preview_item(handle.item_id()),
 5199                            })
 5200                        })
 5201                        .collect::<Vec<_>>(),
 5202                    pane.has_focus(window, cx),
 5203                    pane.pinned_count(),
 5204                )
 5205            };
 5206
 5207            SerializedPane::new(items, active, pinned_count)
 5208        }
 5209
 5210        fn build_serialized_pane_group(
 5211            pane_group: &Member,
 5212            window: &mut Window,
 5213            cx: &mut App,
 5214        ) -> SerializedPaneGroup {
 5215            match pane_group {
 5216                Member::Axis(PaneAxis {
 5217                    axis,
 5218                    members,
 5219                    flexes,
 5220                    bounding_boxes: _,
 5221                }) => SerializedPaneGroup::Group {
 5222                    axis: SerializedAxis(*axis),
 5223                    children: members
 5224                        .iter()
 5225                        .map(|member| build_serialized_pane_group(member, window, cx))
 5226                        .collect::<Vec<_>>(),
 5227                    flexes: Some(flexes.lock().clone()),
 5228                },
 5229                Member::Pane(pane_handle) => {
 5230                    SerializedPaneGroup::Pane(serialize_pane_handle(pane_handle, window, cx))
 5231                }
 5232            }
 5233        }
 5234
 5235        fn build_serialized_docks(
 5236            this: &Workspace,
 5237            window: &mut Window,
 5238            cx: &mut App,
 5239        ) -> DockStructure {
 5240            let left_dock = this.left_dock.read(cx);
 5241            let left_visible = left_dock.is_open();
 5242            let left_active_panel = left_dock
 5243                .active_panel()
 5244                .map(|panel| panel.persistent_name().to_string());
 5245            let left_dock_zoom = left_dock
 5246                .active_panel()
 5247                .map(|panel| panel.is_zoomed(window, cx))
 5248                .unwrap_or(false);
 5249
 5250            let right_dock = this.right_dock.read(cx);
 5251            let right_visible = right_dock.is_open();
 5252            let right_active_panel = right_dock
 5253                .active_panel()
 5254                .map(|panel| panel.persistent_name().to_string());
 5255            let right_dock_zoom = right_dock
 5256                .active_panel()
 5257                .map(|panel| panel.is_zoomed(window, cx))
 5258                .unwrap_or(false);
 5259
 5260            let bottom_dock = this.bottom_dock.read(cx);
 5261            let bottom_visible = bottom_dock.is_open();
 5262            let bottom_active_panel = bottom_dock
 5263                .active_panel()
 5264                .map(|panel| panel.persistent_name().to_string());
 5265            let bottom_dock_zoom = bottom_dock
 5266                .active_panel()
 5267                .map(|panel| panel.is_zoomed(window, cx))
 5268                .unwrap_or(false);
 5269
 5270            DockStructure {
 5271                left: DockData {
 5272                    visible: left_visible,
 5273                    active_panel: left_active_panel,
 5274                    zoom: left_dock_zoom,
 5275                },
 5276                right: DockData {
 5277                    visible: right_visible,
 5278                    active_panel: right_active_panel,
 5279                    zoom: right_dock_zoom,
 5280                },
 5281                bottom: DockData {
 5282                    visible: bottom_visible,
 5283                    active_panel: bottom_active_panel,
 5284                    zoom: bottom_dock_zoom,
 5285                },
 5286            }
 5287        }
 5288
 5289        match self.serialize_workspace_location(cx) {
 5290            WorkspaceLocation::Location(location) => {
 5291                let breakpoints = self.project.update(cx, |project, cx| {
 5292                    project
 5293                        .breakpoint_store()
 5294                        .read(cx)
 5295                        .all_source_breakpoints(cx)
 5296                });
 5297
 5298                let center_group = build_serialized_pane_group(&self.center.root, window, cx);
 5299                let docks = build_serialized_docks(self, window, cx);
 5300                let window_bounds = Some(SerializedWindowBounds(window.window_bounds()));
 5301                let serialized_workspace = SerializedWorkspace {
 5302                    id: database_id,
 5303                    location,
 5304                    center_group,
 5305                    window_bounds,
 5306                    display: Default::default(),
 5307                    docks,
 5308                    centered_layout: self.centered_layout,
 5309                    session_id: self.session_id.clone(),
 5310                    breakpoints,
 5311                    window_id: Some(window.window_handle().window_id().as_u64()),
 5312                };
 5313
 5314                window.spawn(cx, async move |_| {
 5315                    persistence::DB.save_workspace(serialized_workspace).await;
 5316                })
 5317            }
 5318            WorkspaceLocation::DetachFromSession => window.spawn(cx, async move |_| {
 5319                persistence::DB
 5320                    .set_session_id(database_id, None)
 5321                    .await
 5322                    .log_err();
 5323            }),
 5324            WorkspaceLocation::None => Task::ready(()),
 5325        }
 5326    }
 5327
 5328    fn serialize_workspace_location(&self, cx: &App) -> WorkspaceLocation {
 5329        if let Some(ssh_project) = &self.serialized_ssh_project {
 5330            WorkspaceLocation::Location(SerializedWorkspaceLocation::Ssh(ssh_project.clone()))
 5331        } else if let Some(local_paths) = self.local_paths(cx) {
 5332            if !local_paths.is_empty() {
 5333                WorkspaceLocation::Location(SerializedWorkspaceLocation::from_local_paths(
 5334                    local_paths,
 5335                ))
 5336            } else {
 5337                WorkspaceLocation::DetachFromSession
 5338            }
 5339        } else {
 5340            WorkspaceLocation::None
 5341        }
 5342    }
 5343
 5344    fn update_history(&self, cx: &mut App) {
 5345        let Some(id) = self.database_id() else {
 5346            return;
 5347        };
 5348        let location = match self.serialize_workspace_location(cx) {
 5349            WorkspaceLocation::Location(location) => location,
 5350            _ => return,
 5351        };
 5352        if let Some(manager) = HistoryManager::global(cx) {
 5353            manager.update(cx, |this, cx| {
 5354                this.update_history(id, HistoryManagerEntry::new(id, &location), cx);
 5355            });
 5356        }
 5357    }
 5358
 5359    async fn serialize_items(
 5360        this: &WeakEntity<Self>,
 5361        items_rx: UnboundedReceiver<Box<dyn SerializableItemHandle>>,
 5362        cx: &mut AsyncWindowContext,
 5363    ) -> Result<()> {
 5364        const CHUNK_SIZE: usize = 200;
 5365
 5366        let mut serializable_items = items_rx.ready_chunks(CHUNK_SIZE);
 5367
 5368        while let Some(items_received) = serializable_items.next().await {
 5369            let unique_items =
 5370                items_received
 5371                    .into_iter()
 5372                    .fold(HashMap::default(), |mut acc, item| {
 5373                        acc.entry(item.item_id()).or_insert(item);
 5374                        acc
 5375                    });
 5376
 5377            // We use into_iter() here so that the references to the items are moved into
 5378            // the tasks and not kept alive while we're sleeping.
 5379            for (_, item) in unique_items.into_iter() {
 5380                if let Ok(Some(task)) = this.update_in(cx, |workspace, window, cx| {
 5381                    item.serialize(workspace, false, window, cx)
 5382                }) {
 5383                    cx.background_spawn(async move { task.await.log_err() })
 5384                        .detach();
 5385                }
 5386            }
 5387
 5388            cx.background_executor()
 5389                .timer(SERIALIZATION_THROTTLE_TIME)
 5390                .await;
 5391        }
 5392
 5393        Ok(())
 5394    }
 5395
 5396    pub(crate) fn enqueue_item_serialization(
 5397        &mut self,
 5398        item: Box<dyn SerializableItemHandle>,
 5399    ) -> Result<()> {
 5400        self.serializable_items_tx
 5401            .unbounded_send(item)
 5402            .map_err(|err| anyhow!("failed to send serializable item over channel: {err}"))
 5403    }
 5404
 5405    pub(crate) fn load_workspace(
 5406        serialized_workspace: SerializedWorkspace,
 5407        paths_to_open: Vec<Option<ProjectPath>>,
 5408        window: &mut Window,
 5409        cx: &mut Context<Workspace>,
 5410    ) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 5411        cx.spawn_in(window, async move |workspace, cx| {
 5412            let project = workspace.read_with(cx, |workspace, _| workspace.project().clone())?;
 5413
 5414            let mut center_group = None;
 5415            let mut center_items = None;
 5416
 5417            // Traverse the splits tree and add to things
 5418            if let Some((group, active_pane, items)) = serialized_workspace
 5419                .center_group
 5420                .deserialize(&project, serialized_workspace.id, workspace.clone(), cx)
 5421                .await
 5422            {
 5423                center_items = Some(items);
 5424                center_group = Some((group, active_pane))
 5425            }
 5426
 5427            let mut items_by_project_path = HashMap::default();
 5428            let mut item_ids_by_kind = HashMap::default();
 5429            let mut all_deserialized_items = Vec::default();
 5430            cx.update(|_, cx| {
 5431                for item in center_items.unwrap_or_default().into_iter().flatten() {
 5432                    if let Some(serializable_item_handle) = item.to_serializable_item_handle(cx) {
 5433                        item_ids_by_kind
 5434                            .entry(serializable_item_handle.serialized_item_kind())
 5435                            .or_insert(Vec::new())
 5436                            .push(item.item_id().as_u64() as ItemId);
 5437                    }
 5438
 5439                    if let Some(project_path) = item.project_path(cx) {
 5440                        items_by_project_path.insert(project_path, item.clone());
 5441                    }
 5442                    all_deserialized_items.push(item);
 5443                }
 5444            })?;
 5445
 5446            let opened_items = paths_to_open
 5447                .into_iter()
 5448                .map(|path_to_open| {
 5449                    path_to_open
 5450                        .and_then(|path_to_open| items_by_project_path.remove(&path_to_open))
 5451                })
 5452                .collect::<Vec<_>>();
 5453
 5454            // Remove old panes from workspace panes list
 5455            workspace.update_in(cx, |workspace, window, cx| {
 5456                if let Some((center_group, active_pane)) = center_group {
 5457                    workspace.remove_panes(workspace.center.root.clone(), window, cx);
 5458
 5459                    // Swap workspace center group
 5460                    workspace.center = PaneGroup::with_root(center_group);
 5461                    if let Some(active_pane) = active_pane {
 5462                        workspace.set_active_pane(&active_pane, window, cx);
 5463                        cx.focus_self(window);
 5464                    } else {
 5465                        workspace.set_active_pane(&workspace.center.first_pane(), window, cx);
 5466                    }
 5467                }
 5468
 5469                let docks = serialized_workspace.docks;
 5470
 5471                for (dock, serialized_dock) in [
 5472                    (&mut workspace.right_dock, docks.right),
 5473                    (&mut workspace.left_dock, docks.left),
 5474                    (&mut workspace.bottom_dock, docks.bottom),
 5475                ]
 5476                .iter_mut()
 5477                {
 5478                    dock.update(cx, |dock, cx| {
 5479                        dock.serialized_dock = Some(serialized_dock.clone());
 5480                        dock.restore_state(window, cx);
 5481                    });
 5482                }
 5483
 5484                cx.notify();
 5485            })?;
 5486
 5487            let _ = project
 5488                .update(cx, |project, cx| {
 5489                    project
 5490                        .breakpoint_store()
 5491                        .update(cx, |breakpoint_store, cx| {
 5492                            breakpoint_store
 5493                                .with_serialized_breakpoints(serialized_workspace.breakpoints, cx)
 5494                        })
 5495                })?
 5496                .await;
 5497
 5498            // Clean up all the items that have _not_ been loaded. Our ItemIds aren't stable. That means
 5499            // after loading the items, we might have different items and in order to avoid
 5500            // the database filling up, we delete items that haven't been loaded now.
 5501            //
 5502            // The items that have been loaded, have been saved after they've been added to the workspace.
 5503            let clean_up_tasks = workspace.update_in(cx, |_, window, cx| {
 5504                item_ids_by_kind
 5505                    .into_iter()
 5506                    .map(|(item_kind, loaded_items)| {
 5507                        SerializableItemRegistry::cleanup(
 5508                            item_kind,
 5509                            serialized_workspace.id,
 5510                            loaded_items,
 5511                            window,
 5512                            cx,
 5513                        )
 5514                        .log_err()
 5515                    })
 5516                    .collect::<Vec<_>>()
 5517            })?;
 5518
 5519            futures::future::join_all(clean_up_tasks).await;
 5520
 5521            workspace
 5522                .update_in(cx, |workspace, window, cx| {
 5523                    // Serialize ourself to make sure our timestamps and any pane / item changes are replicated
 5524                    workspace.serialize_workspace_internal(window, cx).detach();
 5525
 5526                    // Ensure that we mark the window as edited if we did load dirty items
 5527                    workspace.update_window_edited(window, cx);
 5528                })
 5529                .ok();
 5530
 5531            Ok(opened_items)
 5532        })
 5533    }
 5534
 5535    fn actions(&self, div: Div, window: &mut Window, cx: &mut Context<Self>) -> Div {
 5536        self.add_workspace_actions_listeners(div, window, cx)
 5537            .on_action(cx.listener(Self::close_inactive_items_and_panes))
 5538            .on_action(cx.listener(Self::close_all_items_and_panes))
 5539            .on_action(cx.listener(Self::save_all))
 5540            .on_action(cx.listener(Self::send_keystrokes))
 5541            .on_action(cx.listener(Self::add_folder_to_project))
 5542            .on_action(cx.listener(Self::follow_next_collaborator))
 5543            .on_action(cx.listener(Self::close_window))
 5544            .on_action(cx.listener(Self::activate_pane_at_index))
 5545            .on_action(cx.listener(Self::move_item_to_pane_at_index))
 5546            .on_action(cx.listener(Self::move_focused_panel_to_next_position))
 5547            .on_action(cx.listener(Self::toggle_edit_predictions_all_files))
 5548            .on_action(cx.listener(|workspace, _: &Unfollow, window, cx| {
 5549                let pane = workspace.active_pane().clone();
 5550                workspace.unfollow_in_pane(&pane, window, cx);
 5551            }))
 5552            .on_action(cx.listener(|workspace, action: &Save, window, cx| {
 5553                workspace
 5554                    .save_active_item(action.save_intent.unwrap_or(SaveIntent::Save), window, cx)
 5555                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5556            }))
 5557            .on_action(cx.listener(|workspace, _: &SaveWithoutFormat, window, cx| {
 5558                workspace
 5559                    .save_active_item(SaveIntent::SaveWithoutFormat, window, cx)
 5560                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5561            }))
 5562            .on_action(cx.listener(|workspace, _: &SaveAs, window, cx| {
 5563                workspace
 5564                    .save_active_item(SaveIntent::SaveAs, window, cx)
 5565                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5566            }))
 5567            .on_action(
 5568                cx.listener(|workspace, _: &ActivatePreviousPane, window, cx| {
 5569                    workspace.activate_previous_pane(window, cx)
 5570                }),
 5571            )
 5572            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5573                workspace.activate_next_pane(window, cx)
 5574            }))
 5575            .on_action(
 5576                cx.listener(|workspace, _: &ActivateNextWindow, _window, cx| {
 5577                    workspace.activate_next_window(cx)
 5578                }),
 5579            )
 5580            .on_action(
 5581                cx.listener(|workspace, _: &ActivatePreviousWindow, _window, cx| {
 5582                    workspace.activate_previous_window(cx)
 5583                }),
 5584            )
 5585            .on_action(cx.listener(|workspace, _: &ActivatePaneLeft, window, cx| {
 5586                workspace.activate_pane_in_direction(SplitDirection::Left, window, cx)
 5587            }))
 5588            .on_action(cx.listener(|workspace, _: &ActivatePaneRight, window, cx| {
 5589                workspace.activate_pane_in_direction(SplitDirection::Right, window, cx)
 5590            }))
 5591            .on_action(cx.listener(|workspace, _: &ActivatePaneUp, window, cx| {
 5592                workspace.activate_pane_in_direction(SplitDirection::Up, window, cx)
 5593            }))
 5594            .on_action(cx.listener(|workspace, _: &ActivatePaneDown, window, cx| {
 5595                workspace.activate_pane_in_direction(SplitDirection::Down, window, cx)
 5596            }))
 5597            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5598                workspace.activate_next_pane(window, cx)
 5599            }))
 5600            .on_action(cx.listener(
 5601                |workspace, action: &MoveItemToPaneInDirection, window, cx| {
 5602                    workspace.move_item_to_pane_in_direction(action, window, cx)
 5603                },
 5604            ))
 5605            .on_action(cx.listener(|workspace, _: &SwapPaneLeft, _, cx| {
 5606                workspace.swap_pane_in_direction(SplitDirection::Left, cx)
 5607            }))
 5608            .on_action(cx.listener(|workspace, _: &SwapPaneRight, _, cx| {
 5609                workspace.swap_pane_in_direction(SplitDirection::Right, cx)
 5610            }))
 5611            .on_action(cx.listener(|workspace, _: &SwapPaneUp, _, cx| {
 5612                workspace.swap_pane_in_direction(SplitDirection::Up, cx)
 5613            }))
 5614            .on_action(cx.listener(|workspace, _: &SwapPaneDown, _, cx| {
 5615                workspace.swap_pane_in_direction(SplitDirection::Down, cx)
 5616            }))
 5617            .on_action(cx.listener(|this, _: &ToggleLeftDock, window, cx| {
 5618                this.toggle_dock(DockPosition::Left, window, cx);
 5619            }))
 5620            .on_action(cx.listener(
 5621                |workspace: &mut Workspace, _: &ToggleRightDock, window, cx| {
 5622                    workspace.toggle_dock(DockPosition::Right, window, cx);
 5623                },
 5624            ))
 5625            .on_action(cx.listener(
 5626                |workspace: &mut Workspace, _: &ToggleBottomDock, window, cx| {
 5627                    workspace.toggle_dock(DockPosition::Bottom, window, cx);
 5628                },
 5629            ))
 5630            .on_action(cx.listener(
 5631                |workspace: &mut Workspace, _: &CloseActiveDock, window, cx| {
 5632                    if !workspace.close_active_dock(window, cx) {
 5633                        cx.propagate();
 5634                    }
 5635                },
 5636            ))
 5637            .on_action(
 5638                cx.listener(|workspace: &mut Workspace, _: &CloseAllDocks, window, cx| {
 5639                    workspace.close_all_docks(window, cx);
 5640                }),
 5641            )
 5642            .on_action(cx.listener(
 5643                |workspace: &mut Workspace, _: &ClearAllNotifications, _, cx| {
 5644                    workspace.clear_all_notifications(cx);
 5645                },
 5646            ))
 5647            .on_action(cx.listener(
 5648                |workspace: &mut Workspace, _: &SuppressNotification, _, cx| {
 5649                    if let Some((notification_id, _)) = workspace.notifications.pop() {
 5650                        workspace.suppress_notification(&notification_id, cx);
 5651                    }
 5652                },
 5653            ))
 5654            .on_action(cx.listener(
 5655                |workspace: &mut Workspace, _: &ReopenClosedItem, window, cx| {
 5656                    workspace.reopen_closed_item(window, cx).detach();
 5657                },
 5658            ))
 5659            .on_action(cx.listener(
 5660                |workspace: &mut Workspace, _: &ResetActiveDockSize, window, cx| {
 5661                    for dock in workspace.all_docks() {
 5662                        if dock.focus_handle(cx).contains_focused(window, cx) {
 5663                            let Some(panel) = dock.read(cx).active_panel() else {
 5664                                return;
 5665                            };
 5666
 5667                            // Set to `None`, then the size will fall back to the default.
 5668                            panel.clone().set_size(None, window, cx);
 5669
 5670                            return;
 5671                        }
 5672                    }
 5673                },
 5674            ))
 5675            .on_action(cx.listener(
 5676                |workspace: &mut Workspace, _: &ResetOpenDocksSize, window, cx| {
 5677                    for dock in workspace.all_docks() {
 5678                        if let Some(panel) = dock.read(cx).visible_panel() {
 5679                            // Set to `None`, then the size will fall back to the default.
 5680                            panel.clone().set_size(None, window, cx);
 5681                        }
 5682                    }
 5683                },
 5684            ))
 5685            .on_action(cx.listener(
 5686                |workspace: &mut Workspace, act: &IncreaseActiveDockSize, window, cx| {
 5687                    adjust_active_dock_size_by_px(
 5688                        px_with_ui_font_fallback(act.px, cx),
 5689                        workspace,
 5690                        window,
 5691                        cx,
 5692                    );
 5693                },
 5694            ))
 5695            .on_action(cx.listener(
 5696                |workspace: &mut Workspace, act: &DecreaseActiveDockSize, window, cx| {
 5697                    adjust_active_dock_size_by_px(
 5698                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5699                        workspace,
 5700                        window,
 5701                        cx,
 5702                    );
 5703                },
 5704            ))
 5705            .on_action(cx.listener(
 5706                |workspace: &mut Workspace, act: &IncreaseOpenDocksSize, window, cx| {
 5707                    adjust_open_docks_size_by_px(
 5708                        px_with_ui_font_fallback(act.px, cx),
 5709                        workspace,
 5710                        window,
 5711                        cx,
 5712                    );
 5713                },
 5714            ))
 5715            .on_action(cx.listener(
 5716                |workspace: &mut Workspace, act: &DecreaseOpenDocksSize, window, cx| {
 5717                    adjust_open_docks_size_by_px(
 5718                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5719                        workspace,
 5720                        window,
 5721                        cx,
 5722                    );
 5723                },
 5724            ))
 5725            .on_action(cx.listener(Workspace::toggle_centered_layout))
 5726            .on_action(cx.listener(Workspace::cancel))
 5727    }
 5728
 5729    #[cfg(any(test, feature = "test-support"))]
 5730    pub fn test_new(project: Entity<Project>, window: &mut Window, cx: &mut Context<Self>) -> Self {
 5731        use node_runtime::NodeRuntime;
 5732        use session::Session;
 5733
 5734        let client = project.read(cx).client();
 5735        let user_store = project.read(cx).user_store();
 5736        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 5737        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 5738        window.activate_window();
 5739        let app_state = Arc::new(AppState {
 5740            languages: project.read(cx).languages().clone(),
 5741            workspace_store,
 5742            client,
 5743            user_store,
 5744            fs: project.read(cx).fs().clone(),
 5745            build_window_options: |_, _| Default::default(),
 5746            node_runtime: NodeRuntime::unavailable(),
 5747            session,
 5748        });
 5749        let workspace = Self::new(Default::default(), project, app_state, window, cx);
 5750        workspace
 5751            .active_pane
 5752            .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5753        workspace
 5754    }
 5755
 5756    pub fn register_action<A: Action>(
 5757        &mut self,
 5758        callback: impl Fn(&mut Self, &A, &mut Window, &mut Context<Self>) + 'static,
 5759    ) -> &mut Self {
 5760        let callback = Arc::new(callback);
 5761
 5762        self.workspace_actions.push(Box::new(move |div, _, _, cx| {
 5763            let callback = callback.clone();
 5764            div.on_action(cx.listener(move |workspace, event, window, cx| {
 5765                (callback)(workspace, event, window, cx)
 5766            }))
 5767        }));
 5768        self
 5769    }
 5770    pub fn register_action_renderer(
 5771        &mut self,
 5772        callback: impl Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div + 'static,
 5773    ) -> &mut Self {
 5774        self.workspace_actions.push(Box::new(callback));
 5775        self
 5776    }
 5777
 5778    fn add_workspace_actions_listeners(
 5779        &self,
 5780        mut div: Div,
 5781        window: &mut Window,
 5782        cx: &mut Context<Self>,
 5783    ) -> Div {
 5784        for action in self.workspace_actions.iter() {
 5785            div = (action)(div, self, window, cx)
 5786        }
 5787        div
 5788    }
 5789
 5790    pub fn has_active_modal(&self, _: &mut Window, cx: &mut App) -> bool {
 5791        self.modal_layer.read(cx).has_active_modal()
 5792    }
 5793
 5794    pub fn active_modal<V: ManagedView + 'static>(&self, cx: &App) -> Option<Entity<V>> {
 5795        self.modal_layer.read(cx).active_modal()
 5796    }
 5797
 5798    pub fn toggle_modal<V: ModalView, B>(&mut self, window: &mut Window, cx: &mut App, build: B)
 5799    where
 5800        B: FnOnce(&mut Window, &mut Context<V>) -> V,
 5801    {
 5802        self.modal_layer.update(cx, |modal_layer, cx| {
 5803            modal_layer.toggle_modal(window, cx, build)
 5804        })
 5805    }
 5806
 5807    pub fn toggle_status_toast<V: ToastView>(&mut self, entity: Entity<V>, cx: &mut App) {
 5808        self.toast_layer
 5809            .update(cx, |toast_layer, cx| toast_layer.toggle_toast(cx, entity))
 5810    }
 5811
 5812    pub fn toggle_centered_layout(
 5813        &mut self,
 5814        _: &ToggleCenteredLayout,
 5815        _: &mut Window,
 5816        cx: &mut Context<Self>,
 5817    ) {
 5818        self.centered_layout = !self.centered_layout;
 5819        if let Some(database_id) = self.database_id() {
 5820            cx.background_spawn(DB.set_centered_layout(database_id, self.centered_layout))
 5821                .detach_and_log_err(cx);
 5822        }
 5823        cx.notify();
 5824    }
 5825
 5826    fn adjust_padding(padding: Option<f32>) -> f32 {
 5827        padding
 5828            .unwrap_or(Self::DEFAULT_PADDING)
 5829            .clamp(0.0, Self::MAX_PADDING)
 5830    }
 5831
 5832    fn render_dock(
 5833        &self,
 5834        position: DockPosition,
 5835        dock: &Entity<Dock>,
 5836        window: &mut Window,
 5837        cx: &mut App,
 5838    ) -> Option<Div> {
 5839        if self.zoomed_position == Some(position) {
 5840            return None;
 5841        }
 5842
 5843        let leader_border = dock.read(cx).active_panel().and_then(|panel| {
 5844            let pane = panel.pane(cx)?;
 5845            let follower_states = &self.follower_states;
 5846            leader_border_for_pane(follower_states, &pane, window, cx)
 5847        });
 5848
 5849        Some(
 5850            div()
 5851                .flex()
 5852                .flex_none()
 5853                .overflow_hidden()
 5854                .child(dock.clone())
 5855                .children(leader_border),
 5856        )
 5857    }
 5858
 5859    pub fn for_window(window: &mut Window, _: &mut App) -> Option<Entity<Workspace>> {
 5860        window.root().flatten()
 5861    }
 5862
 5863    pub fn zoomed_item(&self) -> Option<&AnyWeakView> {
 5864        self.zoomed.as_ref()
 5865    }
 5866
 5867    pub fn activate_next_window(&mut self, cx: &mut Context<Self>) {
 5868        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 5869            return;
 5870        };
 5871        let windows = cx.windows();
 5872        let Some(next_window) = windows
 5873            .iter()
 5874            .cycle()
 5875            .skip_while(|window| window.window_id() != current_window_id)
 5876            .nth(1)
 5877        else {
 5878            return;
 5879        };
 5880        next_window
 5881            .update(cx, |_, window, _| window.activate_window())
 5882            .ok();
 5883    }
 5884
 5885    pub fn activate_previous_window(&mut self, cx: &mut Context<Self>) {
 5886        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 5887            return;
 5888        };
 5889        let windows = cx.windows();
 5890        let Some(prev_window) = windows
 5891            .iter()
 5892            .rev()
 5893            .cycle()
 5894            .skip_while(|window| window.window_id() != current_window_id)
 5895            .nth(1)
 5896        else {
 5897            return;
 5898        };
 5899        prev_window
 5900            .update(cx, |_, window, _| window.activate_window())
 5901            .ok();
 5902    }
 5903
 5904    pub fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
 5905        if cx.stop_active_drag(window) {
 5906            return;
 5907        } else if let Some((notification_id, _)) = self.notifications.pop() {
 5908            dismiss_app_notification(&notification_id, cx);
 5909        } else {
 5910            cx.propagate();
 5911        }
 5912    }
 5913
 5914    fn adjust_dock_size_by_px(
 5915        &mut self,
 5916        panel_size: Pixels,
 5917        dock_pos: DockPosition,
 5918        px: Pixels,
 5919        window: &mut Window,
 5920        cx: &mut Context<Self>,
 5921    ) {
 5922        match dock_pos {
 5923            DockPosition::Left => self.resize_left_dock(panel_size + px, window, cx),
 5924            DockPosition::Right => self.resize_right_dock(panel_size + px, window, cx),
 5925            DockPosition::Bottom => self.resize_bottom_dock(panel_size + px, window, cx),
 5926        }
 5927    }
 5928
 5929    fn resize_left_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5930        let size = new_size.min(self.bounds.right() - RESIZE_HANDLE_SIZE);
 5931
 5932        self.left_dock.update(cx, |left_dock, cx| {
 5933            if WorkspaceSettings::get_global(cx)
 5934                .resize_all_panels_in_dock
 5935                .contains(&DockPosition::Left)
 5936            {
 5937                left_dock.resize_all_panels(Some(size), window, cx);
 5938            } else {
 5939                left_dock.resize_active_panel(Some(size), window, cx);
 5940            }
 5941        });
 5942    }
 5943
 5944    fn resize_right_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5945        let mut size = new_size.max(self.bounds.left() - RESIZE_HANDLE_SIZE);
 5946        self.left_dock.read_with(cx, |left_dock, cx| {
 5947            let left_dock_size = left_dock
 5948                .active_panel_size(window, cx)
 5949                .unwrap_or(Pixels(0.0));
 5950            if left_dock_size + size > self.bounds.right() {
 5951                size = self.bounds.right() - left_dock_size
 5952            }
 5953        });
 5954        self.right_dock.update(cx, |right_dock, cx| {
 5955            if WorkspaceSettings::get_global(cx)
 5956                .resize_all_panels_in_dock
 5957                .contains(&DockPosition::Right)
 5958            {
 5959                right_dock.resize_all_panels(Some(size), window, cx);
 5960            } else {
 5961                right_dock.resize_active_panel(Some(size), window, cx);
 5962            }
 5963        });
 5964    }
 5965
 5966    fn resize_bottom_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5967        let size = new_size.min(self.bounds.bottom() - RESIZE_HANDLE_SIZE - self.bounds.top());
 5968        self.bottom_dock.update(cx, |bottom_dock, cx| {
 5969            if WorkspaceSettings::get_global(cx)
 5970                .resize_all_panels_in_dock
 5971                .contains(&DockPosition::Bottom)
 5972            {
 5973                bottom_dock.resize_all_panels(Some(size), window, cx);
 5974            } else {
 5975                bottom_dock.resize_active_panel(Some(size), window, cx);
 5976            }
 5977        });
 5978    }
 5979
 5980    fn toggle_edit_predictions_all_files(
 5981        &mut self,
 5982        _: &ToggleEditPrediction,
 5983        _window: &mut Window,
 5984        cx: &mut Context<Self>,
 5985    ) {
 5986        let fs = self.project().read(cx).fs().clone();
 5987        let show_edit_predictions = all_language_settings(None, cx).show_edit_predictions(None, cx);
 5988        update_settings_file::<AllLanguageSettings>(fs, cx, move |file, _| {
 5989            file.defaults.show_edit_predictions = Some(!show_edit_predictions)
 5990        });
 5991    }
 5992}
 5993
 5994fn leader_border_for_pane(
 5995    follower_states: &HashMap<CollaboratorId, FollowerState>,
 5996    pane: &Entity<Pane>,
 5997    _: &Window,
 5998    cx: &App,
 5999) -> Option<Div> {
 6000    let (leader_id, _follower_state) = follower_states.iter().find_map(|(leader_id, state)| {
 6001        if state.pane() == pane {
 6002            Some((*leader_id, state))
 6003        } else {
 6004            None
 6005        }
 6006    })?;
 6007
 6008    let mut leader_color = match leader_id {
 6009        CollaboratorId::PeerId(leader_peer_id) => {
 6010            let room = ActiveCall::try_global(cx)?.read(cx).room()?.read(cx);
 6011            let leader = room.remote_participant_for_peer_id(leader_peer_id)?;
 6012
 6013            cx.theme()
 6014                .players()
 6015                .color_for_participant(leader.participant_index.0)
 6016                .cursor
 6017        }
 6018        CollaboratorId::Agent => cx.theme().players().agent().cursor,
 6019    };
 6020    leader_color.fade_out(0.3);
 6021    Some(
 6022        div()
 6023            .absolute()
 6024            .size_full()
 6025            .left_0()
 6026            .top_0()
 6027            .border_2()
 6028            .border_color(leader_color),
 6029    )
 6030}
 6031
 6032fn window_bounds_env_override() -> Option<Bounds<Pixels>> {
 6033    ZED_WINDOW_POSITION
 6034        .zip(*ZED_WINDOW_SIZE)
 6035        .map(|(position, size)| Bounds {
 6036            origin: position,
 6037            size,
 6038        })
 6039}
 6040
 6041fn open_items(
 6042    serialized_workspace: Option<SerializedWorkspace>,
 6043    mut project_paths_to_open: Vec<(PathBuf, Option<ProjectPath>)>,
 6044    window: &mut Window,
 6045    cx: &mut Context<Workspace>,
 6046) -> impl 'static + Future<Output = Result<Vec<Option<Result<Box<dyn ItemHandle>>>>>> + use<> {
 6047    let restored_items = serialized_workspace.map(|serialized_workspace| {
 6048        Workspace::load_workspace(
 6049            serialized_workspace,
 6050            project_paths_to_open
 6051                .iter()
 6052                .map(|(_, project_path)| project_path)
 6053                .cloned()
 6054                .collect(),
 6055            window,
 6056            cx,
 6057        )
 6058    });
 6059
 6060    cx.spawn_in(window, async move |workspace, cx| {
 6061        let mut opened_items = Vec::with_capacity(project_paths_to_open.len());
 6062
 6063        if let Some(restored_items) = restored_items {
 6064            let restored_items = restored_items.await?;
 6065
 6066            let restored_project_paths = restored_items
 6067                .iter()
 6068                .filter_map(|item| {
 6069                    cx.update(|_, cx| item.as_ref()?.project_path(cx))
 6070                        .ok()
 6071                        .flatten()
 6072                })
 6073                .collect::<HashSet<_>>();
 6074
 6075            for restored_item in restored_items {
 6076                opened_items.push(restored_item.map(Ok));
 6077            }
 6078
 6079            project_paths_to_open
 6080                .iter_mut()
 6081                .for_each(|(_, project_path)| {
 6082                    if let Some(project_path_to_open) = project_path {
 6083                        if restored_project_paths.contains(project_path_to_open) {
 6084                            *project_path = None;
 6085                        }
 6086                    }
 6087                });
 6088        } else {
 6089            for _ in 0..project_paths_to_open.len() {
 6090                opened_items.push(None);
 6091            }
 6092        }
 6093        assert!(opened_items.len() == project_paths_to_open.len());
 6094
 6095        let tasks =
 6096            project_paths_to_open
 6097                .into_iter()
 6098                .enumerate()
 6099                .map(|(ix, (abs_path, project_path))| {
 6100                    let workspace = workspace.clone();
 6101                    cx.spawn(async move |cx| {
 6102                        let file_project_path = project_path?;
 6103                        let abs_path_task = workspace.update(cx, |workspace, cx| {
 6104                            workspace.project().update(cx, |project, cx| {
 6105                                project.resolve_abs_path(abs_path.to_string_lossy().as_ref(), cx)
 6106                            })
 6107                        });
 6108
 6109                        // We only want to open file paths here. If one of the items
 6110                        // here is a directory, it was already opened further above
 6111                        // with a `find_or_create_worktree`.
 6112                        if let Ok(task) = abs_path_task {
 6113                            if task.await.map_or(true, |p| p.is_file()) {
 6114                                return Some((
 6115                                    ix,
 6116                                    workspace
 6117                                        .update_in(cx, |workspace, window, cx| {
 6118                                            workspace.open_path(
 6119                                                file_project_path,
 6120                                                None,
 6121                                                true,
 6122                                                window,
 6123                                                cx,
 6124                                            )
 6125                                        })
 6126                                        .log_err()?
 6127                                        .await,
 6128                                ));
 6129                            }
 6130                        }
 6131                        None
 6132                    })
 6133                });
 6134
 6135        let tasks = tasks.collect::<Vec<_>>();
 6136
 6137        let tasks = futures::future::join_all(tasks);
 6138        for (ix, path_open_result) in tasks.await.into_iter().flatten() {
 6139            opened_items[ix] = Some(path_open_result);
 6140        }
 6141
 6142        Ok(opened_items)
 6143    })
 6144}
 6145
 6146enum ActivateInDirectionTarget {
 6147    Pane(Entity<Pane>),
 6148    Dock(Entity<Dock>),
 6149}
 6150
 6151fn notify_if_database_failed(workspace: WindowHandle<Workspace>, cx: &mut AsyncApp) {
 6152    workspace
 6153        .update(cx, |workspace, _, cx| {
 6154            if (*db::ALL_FILE_DB_FAILED).load(std::sync::atomic::Ordering::Acquire) {
 6155                struct DatabaseFailedNotification;
 6156
 6157                workspace.show_notification(
 6158                    NotificationId::unique::<DatabaseFailedNotification>(),
 6159                    cx,
 6160                    |cx| {
 6161                        cx.new(|cx| {
 6162                            MessageNotification::new("Failed to load the database file.", cx)
 6163                                .primary_message("File an Issue")
 6164                                .primary_icon(IconName::Plus)
 6165                                .primary_on_click(|window, cx| {
 6166                                    window.dispatch_action(Box::new(FileBugReport), cx)
 6167                                })
 6168                        })
 6169                    },
 6170                );
 6171            }
 6172        })
 6173        .log_err();
 6174}
 6175
 6176fn px_with_ui_font_fallback(val: u32, cx: &Context<Workspace>) -> Pixels {
 6177    if val == 0 {
 6178        ThemeSettings::get_global(cx).ui_font_size(cx)
 6179    } else {
 6180        px(val as f32)
 6181    }
 6182}
 6183
 6184fn adjust_active_dock_size_by_px(
 6185    px: Pixels,
 6186    workspace: &mut Workspace,
 6187    window: &mut Window,
 6188    cx: &mut Context<Workspace>,
 6189) {
 6190    let Some(active_dock) = workspace
 6191        .all_docks()
 6192        .into_iter()
 6193        .find(|dock| dock.focus_handle(cx).contains_focused(window, cx))
 6194    else {
 6195        return;
 6196    };
 6197    let dock = active_dock.read(cx);
 6198    let Some(panel_size) = dock.active_panel_size(window, cx) else {
 6199        return;
 6200    };
 6201    let dock_pos = dock.position();
 6202    workspace.adjust_dock_size_by_px(panel_size, dock_pos, px, window, cx);
 6203}
 6204
 6205fn adjust_open_docks_size_by_px(
 6206    px: Pixels,
 6207    workspace: &mut Workspace,
 6208    window: &mut Window,
 6209    cx: &mut Context<Workspace>,
 6210) {
 6211    let docks = workspace
 6212        .all_docks()
 6213        .into_iter()
 6214        .filter_map(|dock| {
 6215            if dock.read(cx).is_open() {
 6216                let dock = dock.read(cx);
 6217                let panel_size = dock.active_panel_size(window, cx)?;
 6218                let dock_pos = dock.position();
 6219                Some((panel_size, dock_pos, px))
 6220            } else {
 6221                None
 6222            }
 6223        })
 6224        .collect::<Vec<_>>();
 6225
 6226    docks
 6227        .into_iter()
 6228        .for_each(|(panel_size, dock_pos, offset)| {
 6229            workspace.adjust_dock_size_by_px(panel_size, dock_pos, offset, window, cx);
 6230        });
 6231}
 6232
 6233impl Focusable for Workspace {
 6234    fn focus_handle(&self, cx: &App) -> FocusHandle {
 6235        self.active_pane.focus_handle(cx)
 6236    }
 6237}
 6238
 6239#[derive(Clone)]
 6240struct DraggedDock(DockPosition);
 6241
 6242impl Render for DraggedDock {
 6243    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
 6244        gpui::Empty
 6245    }
 6246}
 6247
 6248impl Render for Workspace {
 6249    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 6250        let mut context = KeyContext::new_with_defaults();
 6251        context.add("Workspace");
 6252        context.set("keyboard_layout", cx.keyboard_layout().name().to_string());
 6253        if let Some(status) = self
 6254            .debugger_provider
 6255            .as_ref()
 6256            .and_then(|provider| provider.active_thread_state(cx))
 6257        {
 6258            match status {
 6259                ThreadStatus::Running | ThreadStatus::Stepping => {
 6260                    context.add("debugger_running");
 6261                }
 6262                ThreadStatus::Stopped => context.add("debugger_stopped"),
 6263                ThreadStatus::Exited | ThreadStatus::Ended => {}
 6264            }
 6265        }
 6266
 6267        let centered_layout = self.centered_layout
 6268            && self.center.panes().len() == 1
 6269            && self.active_item(cx).is_some();
 6270        let render_padding = |size| {
 6271            (size > 0.0).then(|| {
 6272                div()
 6273                    .h_full()
 6274                    .w(relative(size))
 6275                    .bg(cx.theme().colors().editor_background)
 6276                    .border_color(cx.theme().colors().pane_group_border)
 6277            })
 6278        };
 6279        let paddings = if centered_layout {
 6280            let settings = WorkspaceSettings::get_global(cx).centered_layout;
 6281            (
 6282                render_padding(Self::adjust_padding(settings.left_padding)),
 6283                render_padding(Self::adjust_padding(settings.right_padding)),
 6284            )
 6285        } else {
 6286            (None, None)
 6287        };
 6288        let ui_font = theme::setup_ui_font(window, cx);
 6289
 6290        let theme = cx.theme().clone();
 6291        let colors = theme.colors();
 6292        let notification_entities = self
 6293            .notifications
 6294            .iter()
 6295            .map(|(_, notification)| notification.entity_id())
 6296            .collect::<Vec<_>>();
 6297        let bottom_dock_layout = WorkspaceSettings::get_global(cx).bottom_dock_layout;
 6298
 6299        client_side_decorations(
 6300            self.actions(div(), window, cx)
 6301                .key_context(context)
 6302                .relative()
 6303                .size_full()
 6304                .flex()
 6305                .flex_col()
 6306                .font(ui_font)
 6307                .gap_0()
 6308                .justify_start()
 6309                .items_start()
 6310                .text_color(colors.text)
 6311                .overflow_hidden()
 6312                .children(self.titlebar_item.clone())
 6313                .on_modifiers_changed(move |_, _, cx| {
 6314                    for &id in &notification_entities {
 6315                        cx.notify(id);
 6316                    }
 6317                })
 6318                .child(
 6319                    div()
 6320                        .size_full()
 6321                        .relative()
 6322                        .flex_1()
 6323                        .flex()
 6324                        .flex_col()
 6325                        .child(
 6326                            div()
 6327                                .id("workspace")
 6328                                .bg(colors.background)
 6329                                .relative()
 6330                                .flex_1()
 6331                                .w_full()
 6332                                .flex()
 6333                                .flex_col()
 6334                                .overflow_hidden()
 6335                                .border_t_1()
 6336                                .border_b_1()
 6337                                .border_color(colors.border)
 6338                                .child({
 6339                                    let this = cx.entity();
 6340                                    canvas(
 6341                                        move |bounds, window, cx| {
 6342                                            this.update(cx, |this, cx| {
 6343                                                let bounds_changed = this.bounds != bounds;
 6344                                                this.bounds = bounds;
 6345
 6346                                                if bounds_changed {
 6347                                                    this.left_dock.update(cx, |dock, cx| {
 6348                                                        dock.clamp_panel_size(
 6349                                                            bounds.size.width,
 6350                                                            window,
 6351                                                            cx,
 6352                                                        )
 6353                                                    });
 6354
 6355                                                    this.right_dock.update(cx, |dock, cx| {
 6356                                                        dock.clamp_panel_size(
 6357                                                            bounds.size.width,
 6358                                                            window,
 6359                                                            cx,
 6360                                                        )
 6361                                                    });
 6362
 6363                                                    this.bottom_dock.update(cx, |dock, cx| {
 6364                                                        dock.clamp_panel_size(
 6365                                                            bounds.size.height,
 6366                                                            window,
 6367                                                            cx,
 6368                                                        )
 6369                                                    });
 6370                                                }
 6371                                            })
 6372                                        },
 6373                                        |_, _, _, _| {},
 6374                                    )
 6375                                    .absolute()
 6376                                    .size_full()
 6377                                })
 6378                                .when(self.zoomed.is_none(), |this| {
 6379                                    this.on_drag_move(cx.listener(
 6380                                        move |workspace,
 6381                                              e: &DragMoveEvent<DraggedDock>,
 6382                                              window,
 6383                                              cx| {
 6384                                            if workspace.previous_dock_drag_coordinates
 6385                                                != Some(e.event.position)
 6386                                            {
 6387                                                workspace.previous_dock_drag_coordinates =
 6388                                                    Some(e.event.position);
 6389                                                match e.drag(cx).0 {
 6390                                                    DockPosition::Left => {
 6391                                                        workspace.resize_left_dock(
 6392                                                            e.event.position.x
 6393                                                                - workspace.bounds.left(),
 6394                                                            window,
 6395                                                            cx,
 6396                                                        );
 6397                                                    }
 6398                                                    DockPosition::Right => {
 6399                                                        workspace.resize_right_dock(
 6400                                                            workspace.bounds.right()
 6401                                                                - e.event.position.x,
 6402                                                            window,
 6403                                                            cx,
 6404                                                        );
 6405                                                    }
 6406                                                    DockPosition::Bottom => {
 6407                                                        workspace.resize_bottom_dock(
 6408                                                            workspace.bounds.bottom()
 6409                                                                - e.event.position.y,
 6410                                                            window,
 6411                                                            cx,
 6412                                                        );
 6413                                                    }
 6414                                                };
 6415                                                workspace.serialize_workspace(window, cx);
 6416                                            }
 6417                                        },
 6418                                    ))
 6419                                })
 6420                                .child({
 6421                                    match bottom_dock_layout {
 6422                                        BottomDockLayout::Full => div()
 6423                                            .flex()
 6424                                            .flex_col()
 6425                                            .h_full()
 6426                                            .child(
 6427                                                div()
 6428                                                    .flex()
 6429                                                    .flex_row()
 6430                                                    .flex_1()
 6431                                                    .overflow_hidden()
 6432                                                    .children(self.render_dock(
 6433                                                        DockPosition::Left,
 6434                                                        &self.left_dock,
 6435                                                        window,
 6436                                                        cx,
 6437                                                    ))
 6438                                                    .child(
 6439                                                        div()
 6440                                                            .flex()
 6441                                                            .flex_col()
 6442                                                            .flex_1()
 6443                                                            .overflow_hidden()
 6444                                                            .child(
 6445                                                                h_flex()
 6446                                                                    .flex_1()
 6447                                                                    .when_some(
 6448                                                                        paddings.0,
 6449                                                                        |this, p| {
 6450                                                                            this.child(
 6451                                                                                p.border_r_1(),
 6452                                                                            )
 6453                                                                        },
 6454                                                                    )
 6455                                                                    .child(self.center.render(
 6456                                                                        self.zoomed.as_ref(),
 6457                                                                        &PaneRenderContext {
 6458                                                                            follower_states:
 6459                                                                                &self.follower_states,
 6460                                                                            active_call: self.active_call(),
 6461                                                                            active_pane: &self.active_pane,
 6462                                                                            app_state: &self.app_state,
 6463                                                                            project: &self.project,
 6464                                                                            workspace: &self.weak_self,
 6465                                                                        },
 6466                                                                        window,
 6467                                                                        cx,
 6468                                                                    ))
 6469                                                                    .when_some(
 6470                                                                        paddings.1,
 6471                                                                        |this, p| {
 6472                                                                            this.child(
 6473                                                                                p.border_l_1(),
 6474                                                                            )
 6475                                                                        },
 6476                                                                    ),
 6477                                                            ),
 6478                                                    )
 6479                                                    .children(self.render_dock(
 6480                                                        DockPosition::Right,
 6481                                                        &self.right_dock,
 6482                                                        window,
 6483                                                        cx,
 6484                                                    )),
 6485                                            )
 6486                                            .child(div().w_full().children(self.render_dock(
 6487                                                DockPosition::Bottom,
 6488                                                &self.bottom_dock,
 6489                                                window,
 6490                                                cx
 6491                                            ))),
 6492
 6493                                        BottomDockLayout::LeftAligned => div()
 6494                                            .flex()
 6495                                            .flex_row()
 6496                                            .h_full()
 6497                                            .child(
 6498                                                div()
 6499                                                    .flex()
 6500                                                    .flex_col()
 6501                                                    .flex_1()
 6502                                                    .h_full()
 6503                                                    .child(
 6504                                                        div()
 6505                                                            .flex()
 6506                                                            .flex_row()
 6507                                                            .flex_1()
 6508                                                            .children(self.render_dock(DockPosition::Left, &self.left_dock, window, cx))
 6509                                                            .child(
 6510                                                                div()
 6511                                                                    .flex()
 6512                                                                    .flex_col()
 6513                                                                    .flex_1()
 6514                                                                    .overflow_hidden()
 6515                                                                    .child(
 6516                                                                        h_flex()
 6517                                                                            .flex_1()
 6518                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6519                                                                            .child(self.center.render(
 6520                                                                                self.zoomed.as_ref(),
 6521                                                                                &PaneRenderContext {
 6522                                                                                    follower_states:
 6523                                                                                        &self.follower_states,
 6524                                                                                    active_call: self.active_call(),
 6525                                                                                    active_pane: &self.active_pane,
 6526                                                                                    app_state: &self.app_state,
 6527                                                                                    project: &self.project,
 6528                                                                                    workspace: &self.weak_self,
 6529                                                                                },
 6530                                                                                window,
 6531                                                                                cx,
 6532                                                                            ))
 6533                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6534                                                                    )
 6535                                                            )
 6536                                                    )
 6537                                                    .child(
 6538                                                        div()
 6539                                                            .w_full()
 6540                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6541                                                    ),
 6542                                            )
 6543                                            .children(self.render_dock(
 6544                                                DockPosition::Right,
 6545                                                &self.right_dock,
 6546                                                window,
 6547                                                cx,
 6548                                            )),
 6549
 6550                                        BottomDockLayout::RightAligned => div()
 6551                                            .flex()
 6552                                            .flex_row()
 6553                                            .h_full()
 6554                                            .children(self.render_dock(
 6555                                                DockPosition::Left,
 6556                                                &self.left_dock,
 6557                                                window,
 6558                                                cx,
 6559                                            ))
 6560                                            .child(
 6561                                                div()
 6562                                                    .flex()
 6563                                                    .flex_col()
 6564                                                    .flex_1()
 6565                                                    .h_full()
 6566                                                    .child(
 6567                                                        div()
 6568                                                            .flex()
 6569                                                            .flex_row()
 6570                                                            .flex_1()
 6571                                                            .child(
 6572                                                                div()
 6573                                                                    .flex()
 6574                                                                    .flex_col()
 6575                                                                    .flex_1()
 6576                                                                    .overflow_hidden()
 6577                                                                    .child(
 6578                                                                        h_flex()
 6579                                                                            .flex_1()
 6580                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6581                                                                            .child(self.center.render(
 6582                                                                                self.zoomed.as_ref(),
 6583                                                                                &PaneRenderContext {
 6584                                                                                    follower_states:
 6585                                                                                        &self.follower_states,
 6586                                                                                    active_call: self.active_call(),
 6587                                                                                    active_pane: &self.active_pane,
 6588                                                                                    app_state: &self.app_state,
 6589                                                                                    project: &self.project,
 6590                                                                                    workspace: &self.weak_self,
 6591                                                                                },
 6592                                                                                window,
 6593                                                                                cx,
 6594                                                                            ))
 6595                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6596                                                                    )
 6597                                                            )
 6598                                                            .children(self.render_dock(DockPosition::Right, &self.right_dock, window, cx))
 6599                                                    )
 6600                                                    .child(
 6601                                                        div()
 6602                                                            .w_full()
 6603                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6604                                                    ),
 6605                                            ),
 6606
 6607                                        BottomDockLayout::Contained => div()
 6608                                            .flex()
 6609                                            .flex_row()
 6610                                            .h_full()
 6611                                            .children(self.render_dock(
 6612                                                DockPosition::Left,
 6613                                                &self.left_dock,
 6614                                                window,
 6615                                                cx,
 6616                                            ))
 6617                                            .child(
 6618                                                div()
 6619                                                    .flex()
 6620                                                    .flex_col()
 6621                                                    .flex_1()
 6622                                                    .overflow_hidden()
 6623                                                    .child(
 6624                                                        h_flex()
 6625                                                            .flex_1()
 6626                                                            .when_some(paddings.0, |this, p| {
 6627                                                                this.child(p.border_r_1())
 6628                                                            })
 6629                                                            .child(self.center.render(
 6630                                                                self.zoomed.as_ref(),
 6631                                                                &PaneRenderContext {
 6632                                                                    follower_states:
 6633                                                                        &self.follower_states,
 6634                                                                    active_call: self.active_call(),
 6635                                                                    active_pane: &self.active_pane,
 6636                                                                    app_state: &self.app_state,
 6637                                                                    project: &self.project,
 6638                                                                    workspace: &self.weak_self,
 6639                                                                },
 6640                                                                window,
 6641                                                                cx,
 6642                                                            ))
 6643                                                            .when_some(paddings.1, |this, p| {
 6644                                                                this.child(p.border_l_1())
 6645                                                            }),
 6646                                                    )
 6647                                                    .children(self.render_dock(
 6648                                                        DockPosition::Bottom,
 6649                                                        &self.bottom_dock,
 6650                                                        window,
 6651                                                        cx,
 6652                                                    )),
 6653                                            )
 6654                                            .children(self.render_dock(
 6655                                                DockPosition::Right,
 6656                                                &self.right_dock,
 6657                                                window,
 6658                                                cx,
 6659                                            )),
 6660                                    }
 6661                                })
 6662                                .children(self.zoomed.as_ref().and_then(|view| {
 6663                                    Some(div()
 6664                                        .occlude()
 6665                                        .absolute()
 6666                                        .overflow_hidden()
 6667                                        .border_color(colors.border)
 6668                                        .bg(colors.background)
 6669                                        .child(view.upgrade()?)
 6670                                        .inset_0()
 6671                                        .shadow_lg())
 6672                                }))
 6673                                .children(self.render_notifications(window, cx)),
 6674                        )
 6675                        .child(self.status_bar.clone())
 6676                        .child(self.modal_layer.clone())
 6677                        .child(self.toast_layer.clone()),
 6678                ),
 6679            window,
 6680            cx,
 6681        )
 6682    }
 6683}
 6684
 6685impl WorkspaceStore {
 6686    pub fn new(client: Arc<Client>, cx: &mut Context<Self>) -> Self {
 6687        Self {
 6688            workspaces: Default::default(),
 6689            _subscriptions: vec![
 6690                client.add_request_handler(cx.weak_entity(), Self::handle_follow),
 6691                client.add_message_handler(cx.weak_entity(), Self::handle_update_followers),
 6692            ],
 6693            client,
 6694        }
 6695    }
 6696
 6697    pub fn update_followers(
 6698        &self,
 6699        project_id: Option<u64>,
 6700        update: proto::update_followers::Variant,
 6701        cx: &App,
 6702    ) -> Option<()> {
 6703        let active_call = ActiveCall::try_global(cx)?;
 6704        let room_id = active_call.read(cx).room()?.read(cx).id();
 6705        self.client
 6706            .send(proto::UpdateFollowers {
 6707                room_id,
 6708                project_id,
 6709                variant: Some(update),
 6710            })
 6711            .log_err()
 6712    }
 6713
 6714    pub async fn handle_follow(
 6715        this: Entity<Self>,
 6716        envelope: TypedEnvelope<proto::Follow>,
 6717        mut cx: AsyncApp,
 6718    ) -> Result<proto::FollowResponse> {
 6719        this.update(&mut cx, |this, cx| {
 6720            let follower = Follower {
 6721                project_id: envelope.payload.project_id,
 6722                peer_id: envelope.original_sender_id()?,
 6723            };
 6724
 6725            let mut response = proto::FollowResponse::default();
 6726            this.workspaces.retain(|workspace| {
 6727                workspace
 6728                    .update(cx, |workspace, window, cx| {
 6729                        let handler_response =
 6730                            workspace.handle_follow(follower.project_id, window, cx);
 6731                        if let Some(active_view) = handler_response.active_view.clone() {
 6732                            if workspace.project.read(cx).remote_id() == follower.project_id {
 6733                                response.active_view = Some(active_view)
 6734                            }
 6735                        }
 6736                    })
 6737                    .is_ok()
 6738            });
 6739
 6740            Ok(response)
 6741        })?
 6742    }
 6743
 6744    async fn handle_update_followers(
 6745        this: Entity<Self>,
 6746        envelope: TypedEnvelope<proto::UpdateFollowers>,
 6747        mut cx: AsyncApp,
 6748    ) -> Result<()> {
 6749        let leader_id = envelope.original_sender_id()?;
 6750        let update = envelope.payload;
 6751
 6752        this.update(&mut cx, |this, cx| {
 6753            this.workspaces.retain(|workspace| {
 6754                workspace
 6755                    .update(cx, |workspace, window, cx| {
 6756                        let project_id = workspace.project.read(cx).remote_id();
 6757                        if update.project_id != project_id && update.project_id.is_some() {
 6758                            return;
 6759                        }
 6760                        workspace.handle_update_followers(leader_id, update.clone(), window, cx);
 6761                    })
 6762                    .is_ok()
 6763            });
 6764            Ok(())
 6765        })?
 6766    }
 6767
 6768    pub fn workspaces(&self) -> &HashSet<WindowHandle<Workspace>> {
 6769        &self.workspaces
 6770    }
 6771}
 6772
 6773impl ViewId {
 6774    pub(crate) fn from_proto(message: proto::ViewId) -> Result<Self> {
 6775        Ok(Self {
 6776            creator: message
 6777                .creator
 6778                .map(CollaboratorId::PeerId)
 6779                .context("creator is missing")?,
 6780            id: message.id,
 6781        })
 6782    }
 6783
 6784    pub(crate) fn to_proto(self) -> Option<proto::ViewId> {
 6785        if let CollaboratorId::PeerId(peer_id) = self.creator {
 6786            Some(proto::ViewId {
 6787                creator: Some(peer_id),
 6788                id: self.id,
 6789            })
 6790        } else {
 6791            None
 6792        }
 6793    }
 6794}
 6795
 6796impl FollowerState {
 6797    fn pane(&self) -> &Entity<Pane> {
 6798        self.dock_pane.as_ref().unwrap_or(&self.center_pane)
 6799    }
 6800}
 6801
 6802pub trait WorkspaceHandle {
 6803    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath>;
 6804}
 6805
 6806impl WorkspaceHandle for Entity<Workspace> {
 6807    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath> {
 6808        self.read(cx)
 6809            .worktrees(cx)
 6810            .flat_map(|worktree| {
 6811                let worktree_id = worktree.read(cx).id();
 6812                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
 6813                    worktree_id,
 6814                    path: f.path.clone(),
 6815                })
 6816            })
 6817            .collect::<Vec<_>>()
 6818    }
 6819}
 6820
 6821pub async fn last_opened_workspace_location() -> Option<SerializedWorkspaceLocation> {
 6822    DB.last_workspace().await.log_err().flatten()
 6823}
 6824
 6825pub fn last_session_workspace_locations(
 6826    last_session_id: &str,
 6827    last_session_window_stack: Option<Vec<WindowId>>,
 6828) -> Option<Vec<SerializedWorkspaceLocation>> {
 6829    DB.last_session_workspace_locations(last_session_id, last_session_window_stack)
 6830        .log_err()
 6831}
 6832
 6833actions!(
 6834    collab,
 6835    [
 6836        /// Opens the channel notes for the current call.
 6837        ///
 6838        /// If you want to open a specific channel, use `zed::OpenZedUrl` with a channel notes URL -
 6839        /// can be copied via "Copy link to section" in the context menu of the channel notes
 6840        /// buffer. These URLs look like `https://zed.dev/channel/channel-name-CHANNEL_ID/notes`.
 6841        OpenChannelNotes,
 6842        /// Mutes your microphone.
 6843        Mute,
 6844        /// Deafens yourself (mute both microphone and speakers).
 6845        Deafen,
 6846        /// Leaves the current call.
 6847        LeaveCall,
 6848        /// Shares the current project with collaborators.
 6849        ShareProject,
 6850        /// Shares your screen with collaborators.
 6851        ScreenShare
 6852    ]
 6853);
 6854actions!(
 6855    zed,
 6856    [
 6857        /// Opens the Zed log file.
 6858        OpenLog
 6859    ]
 6860);
 6861
 6862async fn join_channel_internal(
 6863    channel_id: ChannelId,
 6864    app_state: &Arc<AppState>,
 6865    requesting_window: Option<WindowHandle<Workspace>>,
 6866    active_call: &Entity<ActiveCall>,
 6867    cx: &mut AsyncApp,
 6868) -> Result<bool> {
 6869    let (should_prompt, open_room) = active_call.update(cx, |active_call, cx| {
 6870        let Some(room) = active_call.room().map(|room| room.read(cx)) else {
 6871            return (false, None);
 6872        };
 6873
 6874        let already_in_channel = room.channel_id() == Some(channel_id);
 6875        let should_prompt = room.is_sharing_project()
 6876            && !room.remote_participants().is_empty()
 6877            && !already_in_channel;
 6878        let open_room = if already_in_channel {
 6879            active_call.room().cloned()
 6880        } else {
 6881            None
 6882        };
 6883        (should_prompt, open_room)
 6884    })?;
 6885
 6886    if let Some(room) = open_room {
 6887        let task = room.update(cx, |room, cx| {
 6888            if let Some((project, host)) = room.most_active_project(cx) {
 6889                return Some(join_in_room_project(project, host, app_state.clone(), cx));
 6890            }
 6891
 6892            None
 6893        })?;
 6894        if let Some(task) = task {
 6895            task.await?;
 6896        }
 6897        return anyhow::Ok(true);
 6898    }
 6899
 6900    if should_prompt {
 6901        if let Some(workspace) = requesting_window {
 6902            let answer = workspace
 6903                .update(cx, |_, window, cx| {
 6904                    window.prompt(
 6905                        PromptLevel::Warning,
 6906                        "Do you want to switch channels?",
 6907                        Some("Leaving this call will unshare your current project."),
 6908                        &["Yes, Join Channel", "Cancel"],
 6909                        cx,
 6910                    )
 6911                })?
 6912                .await;
 6913
 6914            if answer == Ok(1) {
 6915                return Ok(false);
 6916            }
 6917        } else {
 6918            return Ok(false); // unreachable!() hopefully
 6919        }
 6920    }
 6921
 6922    let client = cx.update(|cx| active_call.read(cx).client())?;
 6923
 6924    let mut client_status = client.status();
 6925
 6926    // this loop will terminate within client::CONNECTION_TIMEOUT seconds.
 6927    'outer: loop {
 6928        let Some(status) = client_status.recv().await else {
 6929            anyhow::bail!("error connecting");
 6930        };
 6931
 6932        match status {
 6933            Status::Connecting
 6934            | Status::Authenticating
 6935            | Status::Authenticated
 6936            | Status::Reconnecting
 6937            | Status::Reauthenticating => continue,
 6938            Status::Connected { .. } => break 'outer,
 6939            Status::SignedOut | Status::AuthenticationError => {
 6940                return Err(ErrorCode::SignedOut.into());
 6941            }
 6942            Status::UpgradeRequired => return Err(ErrorCode::UpgradeRequired.into()),
 6943            Status::ConnectionError | Status::ConnectionLost | Status::ReconnectionError { .. } => {
 6944                return Err(ErrorCode::Disconnected.into());
 6945            }
 6946        }
 6947    }
 6948
 6949    let room = active_call
 6950        .update(cx, |active_call, cx| {
 6951            active_call.join_channel(channel_id, cx)
 6952        })?
 6953        .await?;
 6954
 6955    let Some(room) = room else {
 6956        return anyhow::Ok(true);
 6957    };
 6958
 6959    room.update(cx, |room, _| room.room_update_completed())?
 6960        .await;
 6961
 6962    let task = room.update(cx, |room, cx| {
 6963        if let Some((project, host)) = room.most_active_project(cx) {
 6964            return Some(join_in_room_project(project, host, app_state.clone(), cx));
 6965        }
 6966
 6967        // If you are the first to join a channel, see if you should share your project.
 6968        if room.remote_participants().is_empty() && !room.local_participant_is_guest() {
 6969            if let Some(workspace) = requesting_window {
 6970                let project = workspace.update(cx, |workspace, _, cx| {
 6971                    let project = workspace.project.read(cx);
 6972
 6973                    if !CallSettings::get_global(cx).share_on_join {
 6974                        return None;
 6975                    }
 6976
 6977                    if (project.is_local() || project.is_via_ssh())
 6978                        && project.visible_worktrees(cx).any(|tree| {
 6979                            tree.read(cx)
 6980                                .root_entry()
 6981                                .map_or(false, |entry| entry.is_dir())
 6982                        })
 6983                    {
 6984                        Some(workspace.project.clone())
 6985                    } else {
 6986                        None
 6987                    }
 6988                });
 6989                if let Ok(Some(project)) = project {
 6990                    return Some(cx.spawn(async move |room, cx| {
 6991                        room.update(cx, |room, cx| room.share_project(project, cx))?
 6992                            .await?;
 6993                        Ok(())
 6994                    }));
 6995                }
 6996            }
 6997        }
 6998
 6999        None
 7000    })?;
 7001    if let Some(task) = task {
 7002        task.await?;
 7003        return anyhow::Ok(true);
 7004    }
 7005    anyhow::Ok(false)
 7006}
 7007
 7008pub fn join_channel(
 7009    channel_id: ChannelId,
 7010    app_state: Arc<AppState>,
 7011    requesting_window: Option<WindowHandle<Workspace>>,
 7012    cx: &mut App,
 7013) -> Task<Result<()>> {
 7014    let active_call = ActiveCall::global(cx);
 7015    cx.spawn(async move |cx| {
 7016        let result = join_channel_internal(
 7017            channel_id,
 7018            &app_state,
 7019            requesting_window,
 7020            &active_call,
 7021             cx,
 7022        )
 7023            .await;
 7024
 7025        // join channel succeeded, and opened a window
 7026        if matches!(result, Ok(true)) {
 7027            return anyhow::Ok(());
 7028        }
 7029
 7030        // find an existing workspace to focus and show call controls
 7031        let mut active_window =
 7032            requesting_window.or_else(|| activate_any_workspace_window( cx));
 7033        if active_window.is_none() {
 7034            // no open workspaces, make one to show the error in (blergh)
 7035            let (window_handle, _) = cx
 7036                .update(|cx| {
 7037                    Workspace::new_local(vec![], app_state.clone(), requesting_window, None, cx)
 7038                })?
 7039                .await?;
 7040
 7041            if result.is_ok() {
 7042                cx.update(|cx| {
 7043                    cx.dispatch_action(&OpenChannelNotes);
 7044                }).log_err();
 7045            }
 7046
 7047            active_window = Some(window_handle);
 7048        }
 7049
 7050        if let Err(err) = result {
 7051            log::error!("failed to join channel: {}", err);
 7052            if let Some(active_window) = active_window {
 7053                active_window
 7054                    .update(cx, |_, window, cx| {
 7055                        let detail: SharedString = match err.error_code() {
 7056                            ErrorCode::SignedOut => {
 7057                                "Please sign in to continue.".into()
 7058                            }
 7059                            ErrorCode::UpgradeRequired => {
 7060                                "Your are running an unsupported version of Zed. Please update to continue.".into()
 7061                            }
 7062                            ErrorCode::NoSuchChannel => {
 7063                                "No matching channel was found. Please check the link and try again.".into()
 7064                            }
 7065                            ErrorCode::Forbidden => {
 7066                                "This channel is private, and you do not have access. Please ask someone to add you and try again.".into()
 7067                            }
 7068                            ErrorCode::Disconnected => "Please check your internet connection and try again.".into(),
 7069                            _ => format!("{}\n\nPlease try again.", err).into(),
 7070                        };
 7071                        window.prompt(
 7072                            PromptLevel::Critical,
 7073                            "Failed to join channel",
 7074                            Some(&detail),
 7075                            &["Ok"],
 7076                        cx)
 7077                    })?
 7078                    .await
 7079                    .ok();
 7080            }
 7081        }
 7082
 7083        // return ok, we showed the error to the user.
 7084        anyhow::Ok(())
 7085    })
 7086}
 7087
 7088pub async fn get_any_active_workspace(
 7089    app_state: Arc<AppState>,
 7090    mut cx: AsyncApp,
 7091) -> anyhow::Result<WindowHandle<Workspace>> {
 7092    // find an existing workspace to focus and show call controls
 7093    let active_window = activate_any_workspace_window(&mut cx);
 7094    if active_window.is_none() {
 7095        cx.update(|cx| Workspace::new_local(vec![], app_state.clone(), None, None, cx))?
 7096            .await?;
 7097    }
 7098    activate_any_workspace_window(&mut cx).context("could not open zed")
 7099}
 7100
 7101fn activate_any_workspace_window(cx: &mut AsyncApp) -> Option<WindowHandle<Workspace>> {
 7102    cx.update(|cx| {
 7103        if let Some(workspace_window) = cx
 7104            .active_window()
 7105            .and_then(|window| window.downcast::<Workspace>())
 7106        {
 7107            return Some(workspace_window);
 7108        }
 7109
 7110        for window in cx.windows() {
 7111            if let Some(workspace_window) = window.downcast::<Workspace>() {
 7112                workspace_window
 7113                    .update(cx, |_, window, _| window.activate_window())
 7114                    .ok();
 7115                return Some(workspace_window);
 7116            }
 7117        }
 7118        None
 7119    })
 7120    .ok()
 7121    .flatten()
 7122}
 7123
 7124pub fn local_workspace_windows(cx: &App) -> Vec<WindowHandle<Workspace>> {
 7125    cx.windows()
 7126        .into_iter()
 7127        .filter_map(|window| window.downcast::<Workspace>())
 7128        .filter(|workspace| {
 7129            workspace
 7130                .read(cx)
 7131                .is_ok_and(|workspace| workspace.project.read(cx).is_local())
 7132        })
 7133        .collect()
 7134}
 7135
 7136#[derive(Default)]
 7137pub struct OpenOptions {
 7138    pub visible: Option<OpenVisible>,
 7139    pub focus: Option<bool>,
 7140    pub open_new_workspace: Option<bool>,
 7141    pub replace_window: Option<WindowHandle<Workspace>>,
 7142    pub env: Option<HashMap<String, String>>,
 7143}
 7144
 7145#[allow(clippy::type_complexity)]
 7146pub fn open_paths(
 7147    abs_paths: &[PathBuf],
 7148    app_state: Arc<AppState>,
 7149    open_options: OpenOptions,
 7150    cx: &mut App,
 7151) -> Task<
 7152    anyhow::Result<(
 7153        WindowHandle<Workspace>,
 7154        Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 7155    )>,
 7156> {
 7157    let abs_paths = abs_paths.to_vec();
 7158    let mut existing = None;
 7159    let mut best_match = None;
 7160    let mut open_visible = OpenVisible::All;
 7161
 7162    cx.spawn(async move |cx| {
 7163        if open_options.open_new_workspace != Some(true) {
 7164            let all_paths = abs_paths.iter().map(|path| app_state.fs.metadata(path));
 7165            let all_metadatas = futures::future::join_all(all_paths)
 7166                .await
 7167                .into_iter()
 7168                .filter_map(|result| result.ok().flatten())
 7169                .collect::<Vec<_>>();
 7170
 7171            cx.update(|cx| {
 7172                for window in local_workspace_windows(cx) {
 7173                    if let Ok(workspace) = window.read(cx) {
 7174                        let m = workspace.project.read(cx).visibility_for_paths(
 7175                            &abs_paths,
 7176                            &all_metadatas,
 7177                            open_options.open_new_workspace == None,
 7178                            cx,
 7179                        );
 7180                        if m > best_match {
 7181                            existing = Some(window);
 7182                            best_match = m;
 7183                        } else if best_match.is_none()
 7184                            && open_options.open_new_workspace == Some(false)
 7185                        {
 7186                            existing = Some(window)
 7187                        }
 7188                    }
 7189                }
 7190            })?;
 7191
 7192            if open_options.open_new_workspace.is_none() && existing.is_none() {
 7193                if all_metadatas.iter().all(|file| !file.is_dir) {
 7194                    cx.update(|cx| {
 7195                        if let Some(window) = cx
 7196                            .active_window()
 7197                            .and_then(|window| window.downcast::<Workspace>())
 7198                        {
 7199                            if let Ok(workspace) = window.read(cx) {
 7200                                let project = workspace.project().read(cx);
 7201                                if project.is_local() && !project.is_via_collab() {
 7202                                    existing = Some(window);
 7203                                    open_visible = OpenVisible::None;
 7204                                    return;
 7205                                }
 7206                            }
 7207                        }
 7208                        for window in local_workspace_windows(cx) {
 7209                            if let Ok(workspace) = window.read(cx) {
 7210                                let project = workspace.project().read(cx);
 7211                                if project.is_via_collab() {
 7212                                    continue;
 7213                                }
 7214                                existing = Some(window);
 7215                                open_visible = OpenVisible::None;
 7216                                break;
 7217                            }
 7218                        }
 7219                    })?;
 7220                }
 7221            }
 7222        }
 7223
 7224        if let Some(existing) = existing {
 7225            let open_task = existing
 7226                .update(cx, |workspace, window, cx| {
 7227                    window.activate_window();
 7228                    workspace.open_paths(
 7229                        abs_paths,
 7230                        OpenOptions {
 7231                            visible: Some(open_visible),
 7232                            ..Default::default()
 7233                        },
 7234                        None,
 7235                        window,
 7236                        cx,
 7237                    )
 7238                })?
 7239                .await;
 7240
 7241            _ = existing.update(cx, |workspace, _, cx| {
 7242                for item in open_task.iter().flatten() {
 7243                    if let Err(e) = item {
 7244                        workspace.show_error(&e, cx);
 7245                    }
 7246                }
 7247            });
 7248
 7249            Ok((existing, open_task))
 7250        } else {
 7251            cx.update(move |cx| {
 7252                Workspace::new_local(
 7253                    abs_paths,
 7254                    app_state.clone(),
 7255                    open_options.replace_window,
 7256                    open_options.env,
 7257                    cx,
 7258                )
 7259            })?
 7260            .await
 7261        }
 7262    })
 7263}
 7264
 7265pub fn open_new(
 7266    open_options: OpenOptions,
 7267    app_state: Arc<AppState>,
 7268    cx: &mut App,
 7269    init: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + 'static + Send,
 7270) -> Task<anyhow::Result<()>> {
 7271    let task = Workspace::new_local(Vec::new(), app_state, None, open_options.env, cx);
 7272    cx.spawn(async move |cx| {
 7273        let (workspace, opened_paths) = task.await?;
 7274        workspace.update(cx, |workspace, window, cx| {
 7275            if opened_paths.is_empty() {
 7276                init(workspace, window, cx)
 7277            }
 7278        })?;
 7279        Ok(())
 7280    })
 7281}
 7282
 7283pub fn create_and_open_local_file(
 7284    path: &'static Path,
 7285    window: &mut Window,
 7286    cx: &mut Context<Workspace>,
 7287    default_content: impl 'static + Send + FnOnce() -> Rope,
 7288) -> Task<Result<Box<dyn ItemHandle>>> {
 7289    cx.spawn_in(window, async move |workspace, cx| {
 7290        let fs = workspace.read_with(cx, |workspace, _| workspace.app_state().fs.clone())?;
 7291        if !fs.is_file(path).await {
 7292            fs.create_file(path, Default::default()).await?;
 7293            fs.save(path, &default_content(), Default::default())
 7294                .await?;
 7295        }
 7296
 7297        let mut items = workspace
 7298            .update_in(cx, |workspace, window, cx| {
 7299                workspace.with_local_workspace(window, cx, |workspace, window, cx| {
 7300                    workspace.open_paths(
 7301                        vec![path.to_path_buf()],
 7302                        OpenOptions {
 7303                            visible: Some(OpenVisible::None),
 7304                            ..Default::default()
 7305                        },
 7306                        None,
 7307                        window,
 7308                        cx,
 7309                    )
 7310                })
 7311            })?
 7312            .await?
 7313            .await;
 7314
 7315        let item = items.pop().flatten();
 7316        item.with_context(|| format!("path {path:?} is not a file"))?
 7317    })
 7318}
 7319
 7320pub fn open_ssh_project_with_new_connection(
 7321    window: WindowHandle<Workspace>,
 7322    connection_options: SshConnectionOptions,
 7323    cancel_rx: oneshot::Receiver<()>,
 7324    delegate: Arc<dyn SshClientDelegate>,
 7325    app_state: Arc<AppState>,
 7326    paths: Vec<PathBuf>,
 7327    cx: &mut App,
 7328) -> Task<Result<()>> {
 7329    cx.spawn(async move |cx| {
 7330        let (serialized_ssh_project, workspace_id, serialized_workspace) =
 7331            serialize_ssh_project(connection_options.clone(), paths.clone(), cx).await?;
 7332
 7333        let session = match cx
 7334            .update(|cx| {
 7335                remote::SshRemoteClient::new(
 7336                    ConnectionIdentifier::Workspace(workspace_id.0),
 7337                    connection_options,
 7338                    cancel_rx,
 7339                    delegate,
 7340                    cx,
 7341                )
 7342            })?
 7343            .await?
 7344        {
 7345            Some(result) => result,
 7346            None => return Ok(()),
 7347        };
 7348
 7349        let project = cx.update(|cx| {
 7350            project::Project::ssh(
 7351                session,
 7352                app_state.client.clone(),
 7353                app_state.node_runtime.clone(),
 7354                app_state.user_store.clone(),
 7355                app_state.languages.clone(),
 7356                app_state.fs.clone(),
 7357                cx,
 7358            )
 7359        })?;
 7360
 7361        open_ssh_project_inner(
 7362            project,
 7363            paths,
 7364            serialized_ssh_project,
 7365            workspace_id,
 7366            serialized_workspace,
 7367            app_state,
 7368            window,
 7369            cx,
 7370        )
 7371        .await
 7372    })
 7373}
 7374
 7375pub fn open_ssh_project_with_existing_connection(
 7376    connection_options: SshConnectionOptions,
 7377    project: Entity<Project>,
 7378    paths: Vec<PathBuf>,
 7379    app_state: Arc<AppState>,
 7380    window: WindowHandle<Workspace>,
 7381    cx: &mut AsyncApp,
 7382) -> Task<Result<()>> {
 7383    cx.spawn(async move |cx| {
 7384        let (serialized_ssh_project, workspace_id, serialized_workspace) =
 7385            serialize_ssh_project(connection_options.clone(), paths.clone(), cx).await?;
 7386
 7387        open_ssh_project_inner(
 7388            project,
 7389            paths,
 7390            serialized_ssh_project,
 7391            workspace_id,
 7392            serialized_workspace,
 7393            app_state,
 7394            window,
 7395            cx,
 7396        )
 7397        .await
 7398    })
 7399}
 7400
 7401async fn open_ssh_project_inner(
 7402    project: Entity<Project>,
 7403    paths: Vec<PathBuf>,
 7404    serialized_ssh_project: SerializedSshProject,
 7405    workspace_id: WorkspaceId,
 7406    serialized_workspace: Option<SerializedWorkspace>,
 7407    app_state: Arc<AppState>,
 7408    window: WindowHandle<Workspace>,
 7409    cx: &mut AsyncApp,
 7410) -> Result<()> {
 7411    let toolchains = DB.toolchains(workspace_id).await?;
 7412    for (toolchain, worktree_id, path) in toolchains {
 7413        project
 7414            .update(cx, |this, cx| {
 7415                this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 7416            })?
 7417            .await;
 7418    }
 7419    let mut project_paths_to_open = vec![];
 7420    let mut project_path_errors = vec![];
 7421
 7422    for path in paths {
 7423        let result = cx
 7424            .update(|cx| Workspace::project_path_for_path(project.clone(), &path, true, cx))?
 7425            .await;
 7426        match result {
 7427            Ok((_, project_path)) => {
 7428                project_paths_to_open.push((path.clone(), Some(project_path)));
 7429            }
 7430            Err(error) => {
 7431                project_path_errors.push(error);
 7432            }
 7433        };
 7434    }
 7435
 7436    if project_paths_to_open.is_empty() {
 7437        return Err(project_path_errors.pop().context("no paths given")?);
 7438    }
 7439
 7440    if let Some(detach_session_task) = window
 7441        .update(cx, |_workspace, window, cx| {
 7442            cx.spawn_in(window, async move |this, cx| {
 7443                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))
 7444            })
 7445        })
 7446        .ok()
 7447    {
 7448        detach_session_task.await.ok();
 7449    }
 7450
 7451    cx.update_window(window.into(), |_, window, cx| {
 7452        window.replace_root(cx, |window, cx| {
 7453            telemetry::event!("SSH Project Opened");
 7454
 7455            let mut workspace =
 7456                Workspace::new(Some(workspace_id), project, app_state.clone(), window, cx);
 7457            workspace.set_serialized_ssh_project(serialized_ssh_project);
 7458            workspace.update_history(cx);
 7459
 7460            if let Some(ref serialized) = serialized_workspace {
 7461                workspace.centered_layout = serialized.centered_layout;
 7462            }
 7463
 7464            workspace
 7465        });
 7466    })?;
 7467
 7468    window
 7469        .update(cx, |_, window, cx| {
 7470            window.activate_window();
 7471            open_items(serialized_workspace, project_paths_to_open, window, cx)
 7472        })?
 7473        .await?;
 7474
 7475    window.update(cx, |workspace, _, cx| {
 7476        for error in project_path_errors {
 7477            if error.error_code() == proto::ErrorCode::DevServerProjectPathDoesNotExist {
 7478                if let Some(path) = error.error_tag("path") {
 7479                    workspace.show_error(&anyhow!("'{path}' does not exist"), cx)
 7480                }
 7481            } else {
 7482                workspace.show_error(&error, cx)
 7483            }
 7484        }
 7485    })?;
 7486
 7487    Ok(())
 7488}
 7489
 7490fn serialize_ssh_project(
 7491    connection_options: SshConnectionOptions,
 7492    paths: Vec<PathBuf>,
 7493    cx: &AsyncApp,
 7494) -> Task<
 7495    Result<(
 7496        SerializedSshProject,
 7497        WorkspaceId,
 7498        Option<SerializedWorkspace>,
 7499    )>,
 7500> {
 7501    cx.background_spawn(async move {
 7502        let serialized_ssh_project = persistence::DB
 7503            .get_or_create_ssh_project(
 7504                connection_options.host.clone(),
 7505                connection_options.port,
 7506                paths
 7507                    .iter()
 7508                    .map(|path| path.to_string_lossy().to_string())
 7509                    .collect::<Vec<_>>(),
 7510                connection_options.username.clone(),
 7511            )
 7512            .await?;
 7513
 7514        let serialized_workspace =
 7515            persistence::DB.workspace_for_ssh_project(&serialized_ssh_project);
 7516
 7517        let workspace_id = if let Some(workspace_id) =
 7518            serialized_workspace.as_ref().map(|workspace| workspace.id)
 7519        {
 7520            workspace_id
 7521        } else {
 7522            persistence::DB.next_id().await?
 7523        };
 7524
 7525        Ok((serialized_ssh_project, workspace_id, serialized_workspace))
 7526    })
 7527}
 7528
 7529pub fn join_in_room_project(
 7530    project_id: u64,
 7531    follow_user_id: u64,
 7532    app_state: Arc<AppState>,
 7533    cx: &mut App,
 7534) -> Task<Result<()>> {
 7535    let windows = cx.windows();
 7536    cx.spawn(async move |cx| {
 7537        let existing_workspace = windows.into_iter().find_map(|window_handle| {
 7538            window_handle
 7539                .downcast::<Workspace>()
 7540                .and_then(|window_handle| {
 7541                    window_handle
 7542                        .update(cx, |workspace, _window, cx| {
 7543                            if workspace.project().read(cx).remote_id() == Some(project_id) {
 7544                                Some(window_handle)
 7545                            } else {
 7546                                None
 7547                            }
 7548                        })
 7549                        .unwrap_or(None)
 7550                })
 7551        });
 7552
 7553        let workspace = if let Some(existing_workspace) = existing_workspace {
 7554            existing_workspace
 7555        } else {
 7556            let active_call = cx.update(|cx| ActiveCall::global(cx))?;
 7557            let room = active_call
 7558                .read_with(cx, |call, _| call.room().cloned())?
 7559                .context("not in a call")?;
 7560            let project = room
 7561                .update(cx, |room, cx| {
 7562                    room.join_project(
 7563                        project_id,
 7564                        app_state.languages.clone(),
 7565                        app_state.fs.clone(),
 7566                        cx,
 7567                    )
 7568                })?
 7569                .await?;
 7570
 7571            let window_bounds_override = window_bounds_env_override();
 7572            cx.update(|cx| {
 7573                let mut options = (app_state.build_window_options)(None, cx);
 7574                options.window_bounds = window_bounds_override.map(WindowBounds::Windowed);
 7575                cx.open_window(options, |window, cx| {
 7576                    cx.new(|cx| {
 7577                        Workspace::new(Default::default(), project, app_state.clone(), window, cx)
 7578                    })
 7579                })
 7580            })??
 7581        };
 7582
 7583        workspace.update(cx, |workspace, window, cx| {
 7584            cx.activate(true);
 7585            window.activate_window();
 7586
 7587            if let Some(room) = ActiveCall::global(cx).read(cx).room().cloned() {
 7588                let follow_peer_id = room
 7589                    .read(cx)
 7590                    .remote_participants()
 7591                    .iter()
 7592                    .find(|(_, participant)| participant.user.id == follow_user_id)
 7593                    .map(|(_, p)| p.peer_id)
 7594                    .or_else(|| {
 7595                        // If we couldn't follow the given user, follow the host instead.
 7596                        let collaborator = workspace
 7597                            .project()
 7598                            .read(cx)
 7599                            .collaborators()
 7600                            .values()
 7601                            .find(|collaborator| collaborator.is_host)?;
 7602                        Some(collaborator.peer_id)
 7603                    });
 7604
 7605                if let Some(follow_peer_id) = follow_peer_id {
 7606                    workspace.follow(follow_peer_id, window, cx);
 7607                }
 7608            }
 7609        })?;
 7610
 7611        anyhow::Ok(())
 7612    })
 7613}
 7614
 7615pub fn reload(cx: &mut App) {
 7616    let should_confirm = WorkspaceSettings::get_global(cx).confirm_quit;
 7617    let mut workspace_windows = cx
 7618        .windows()
 7619        .into_iter()
 7620        .filter_map(|window| window.downcast::<Workspace>())
 7621        .collect::<Vec<_>>();
 7622
 7623    // If multiple windows have unsaved changes, and need a save prompt,
 7624    // prompt in the active window before switching to a different window.
 7625    workspace_windows.sort_by_key(|window| window.is_active(cx) == Some(false));
 7626
 7627    let mut prompt = None;
 7628    if let (true, Some(window)) = (should_confirm, workspace_windows.first()) {
 7629        prompt = window
 7630            .update(cx, |_, window, cx| {
 7631                window.prompt(
 7632                    PromptLevel::Info,
 7633                    "Are you sure you want to restart?",
 7634                    None,
 7635                    &["Restart", "Cancel"],
 7636                    cx,
 7637                )
 7638            })
 7639            .ok();
 7640    }
 7641
 7642    cx.spawn(async move |cx| {
 7643        if let Some(prompt) = prompt {
 7644            let answer = prompt.await?;
 7645            if answer != 0 {
 7646                return Ok(());
 7647            }
 7648        }
 7649
 7650        // If the user cancels any save prompt, then keep the app open.
 7651        for window in workspace_windows {
 7652            if let Ok(should_close) = window.update(cx, |workspace, window, cx| {
 7653                workspace.prepare_to_close(CloseIntent::Quit, window, cx)
 7654            }) {
 7655                if !should_close.await? {
 7656                    return Ok(());
 7657                }
 7658            }
 7659        }
 7660        cx.update(|cx| cx.restart())
 7661    })
 7662    .detach_and_log_err(cx);
 7663}
 7664
 7665fn parse_pixel_position_env_var(value: &str) -> Option<Point<Pixels>> {
 7666    let mut parts = value.split(',');
 7667    let x: usize = parts.next()?.parse().ok()?;
 7668    let y: usize = parts.next()?.parse().ok()?;
 7669    Some(point(px(x as f32), px(y as f32)))
 7670}
 7671
 7672fn parse_pixel_size_env_var(value: &str) -> Option<Size<Pixels>> {
 7673    let mut parts = value.split(',');
 7674    let width: usize = parts.next()?.parse().ok()?;
 7675    let height: usize = parts.next()?.parse().ok()?;
 7676    Some(size(px(width as f32), px(height as f32)))
 7677}
 7678
 7679/// Add client-side decorations (rounded corners, shadows, resize handling) when appropriate.
 7680pub fn client_side_decorations(
 7681    element: impl IntoElement,
 7682    window: &mut Window,
 7683    cx: &mut App,
 7684) -> Stateful<Div> {
 7685    const BORDER_SIZE: Pixels = px(1.0);
 7686    let decorations = window.window_decorations();
 7687
 7688    match decorations {
 7689        Decorations::Client { .. } => window.set_client_inset(theme::CLIENT_SIDE_DECORATION_SHADOW),
 7690        Decorations::Server { .. } => window.set_client_inset(px(0.0)),
 7691    }
 7692
 7693    struct GlobalResizeEdge(ResizeEdge);
 7694    impl Global for GlobalResizeEdge {}
 7695
 7696    div()
 7697        .id("window-backdrop")
 7698        .bg(transparent_black())
 7699        .map(|div| match decorations {
 7700            Decorations::Server => div,
 7701            Decorations::Client { tiling, .. } => div
 7702                .when(!(tiling.top || tiling.right), |div| {
 7703                    div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7704                })
 7705                .when(!(tiling.top || tiling.left), |div| {
 7706                    div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7707                })
 7708                .when(!(tiling.bottom || tiling.right), |div| {
 7709                    div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7710                })
 7711                .when(!(tiling.bottom || tiling.left), |div| {
 7712                    div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7713                })
 7714                .when(!tiling.top, |div| {
 7715                    div.pt(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7716                })
 7717                .when(!tiling.bottom, |div| {
 7718                    div.pb(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7719                })
 7720                .when(!tiling.left, |div| {
 7721                    div.pl(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7722                })
 7723                .when(!tiling.right, |div| {
 7724                    div.pr(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7725                })
 7726                .on_mouse_move(move |e, window, cx| {
 7727                    let size = window.window_bounds().get_bounds().size;
 7728                    let pos = e.position;
 7729
 7730                    let new_edge =
 7731                        resize_edge(pos, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling);
 7732
 7733                    let edge = cx.try_global::<GlobalResizeEdge>();
 7734                    if new_edge != edge.map(|edge| edge.0) {
 7735                        window
 7736                            .window_handle()
 7737                            .update(cx, |workspace, _, cx| {
 7738                                cx.notify(workspace.entity_id());
 7739                            })
 7740                            .ok();
 7741                    }
 7742                })
 7743                .on_mouse_down(MouseButton::Left, move |e, window, _| {
 7744                    let size = window.window_bounds().get_bounds().size;
 7745                    let pos = e.position;
 7746
 7747                    let edge = match resize_edge(
 7748                        pos,
 7749                        theme::CLIENT_SIDE_DECORATION_SHADOW,
 7750                        size,
 7751                        tiling,
 7752                    ) {
 7753                        Some(value) => value,
 7754                        None => return,
 7755                    };
 7756
 7757                    window.start_window_resize(edge);
 7758                }),
 7759        })
 7760        .size_full()
 7761        .child(
 7762            div()
 7763                .cursor(CursorStyle::Arrow)
 7764                .map(|div| match decorations {
 7765                    Decorations::Server => div,
 7766                    Decorations::Client { tiling } => div
 7767                        .border_color(cx.theme().colors().border)
 7768                        .when(!(tiling.top || tiling.right), |div| {
 7769                            div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7770                        })
 7771                        .when(!(tiling.top || tiling.left), |div| {
 7772                            div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7773                        })
 7774                        .when(!(tiling.bottom || tiling.right), |div| {
 7775                            div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7776                        })
 7777                        .when(!(tiling.bottom || tiling.left), |div| {
 7778                            div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7779                        })
 7780                        .when(!tiling.top, |div| div.border_t(BORDER_SIZE))
 7781                        .when(!tiling.bottom, |div| div.border_b(BORDER_SIZE))
 7782                        .when(!tiling.left, |div| div.border_l(BORDER_SIZE))
 7783                        .when(!tiling.right, |div| div.border_r(BORDER_SIZE))
 7784                        .when(!tiling.is_tiled(), |div| {
 7785                            div.shadow(vec![gpui::BoxShadow {
 7786                                color: Hsla {
 7787                                    h: 0.,
 7788                                    s: 0.,
 7789                                    l: 0.,
 7790                                    a: 0.4,
 7791                                },
 7792                                blur_radius: theme::CLIENT_SIDE_DECORATION_SHADOW / 2.,
 7793                                spread_radius: px(0.),
 7794                                offset: point(px(0.0), px(0.0)),
 7795                            }])
 7796                        }),
 7797                })
 7798                .on_mouse_move(|_e, _, cx| {
 7799                    cx.stop_propagation();
 7800                })
 7801                .size_full()
 7802                .child(element),
 7803        )
 7804        .map(|div| match decorations {
 7805            Decorations::Server => div,
 7806            Decorations::Client { tiling, .. } => div.child(
 7807                canvas(
 7808                    |_bounds, window, _| {
 7809                        window.insert_hitbox(
 7810                            Bounds::new(
 7811                                point(px(0.0), px(0.0)),
 7812                                window.window_bounds().get_bounds().size,
 7813                            ),
 7814                            HitboxBehavior::Normal,
 7815                        )
 7816                    },
 7817                    move |_bounds, hitbox, window, cx| {
 7818                        let mouse = window.mouse_position();
 7819                        let size = window.window_bounds().get_bounds().size;
 7820                        let Some(edge) =
 7821                            resize_edge(mouse, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling)
 7822                        else {
 7823                            return;
 7824                        };
 7825                        cx.set_global(GlobalResizeEdge(edge));
 7826                        window.set_cursor_style(
 7827                            match edge {
 7828                                ResizeEdge::Top | ResizeEdge::Bottom => CursorStyle::ResizeUpDown,
 7829                                ResizeEdge::Left | ResizeEdge::Right => {
 7830                                    CursorStyle::ResizeLeftRight
 7831                                }
 7832                                ResizeEdge::TopLeft | ResizeEdge::BottomRight => {
 7833                                    CursorStyle::ResizeUpLeftDownRight
 7834                                }
 7835                                ResizeEdge::TopRight | ResizeEdge::BottomLeft => {
 7836                                    CursorStyle::ResizeUpRightDownLeft
 7837                                }
 7838                            },
 7839                            &hitbox,
 7840                        );
 7841                    },
 7842                )
 7843                .size_full()
 7844                .absolute(),
 7845            ),
 7846        })
 7847}
 7848
 7849fn resize_edge(
 7850    pos: Point<Pixels>,
 7851    shadow_size: Pixels,
 7852    window_size: Size<Pixels>,
 7853    tiling: Tiling,
 7854) -> Option<ResizeEdge> {
 7855    let bounds = Bounds::new(Point::default(), window_size).inset(shadow_size * 1.5);
 7856    if bounds.contains(&pos) {
 7857        return None;
 7858    }
 7859
 7860    let corner_size = size(shadow_size * 1.5, shadow_size * 1.5);
 7861    let top_left_bounds = Bounds::new(Point::new(px(0.), px(0.)), corner_size);
 7862    if !tiling.top && top_left_bounds.contains(&pos) {
 7863        return Some(ResizeEdge::TopLeft);
 7864    }
 7865
 7866    let top_right_bounds = Bounds::new(
 7867        Point::new(window_size.width - corner_size.width, px(0.)),
 7868        corner_size,
 7869    );
 7870    if !tiling.top && top_right_bounds.contains(&pos) {
 7871        return Some(ResizeEdge::TopRight);
 7872    }
 7873
 7874    let bottom_left_bounds = Bounds::new(
 7875        Point::new(px(0.), window_size.height - corner_size.height),
 7876        corner_size,
 7877    );
 7878    if !tiling.bottom && bottom_left_bounds.contains(&pos) {
 7879        return Some(ResizeEdge::BottomLeft);
 7880    }
 7881
 7882    let bottom_right_bounds = Bounds::new(
 7883        Point::new(
 7884            window_size.width - corner_size.width,
 7885            window_size.height - corner_size.height,
 7886        ),
 7887        corner_size,
 7888    );
 7889    if !tiling.bottom && bottom_right_bounds.contains(&pos) {
 7890        return Some(ResizeEdge::BottomRight);
 7891    }
 7892
 7893    if !tiling.top && pos.y < shadow_size {
 7894        Some(ResizeEdge::Top)
 7895    } else if !tiling.bottom && pos.y > window_size.height - shadow_size {
 7896        Some(ResizeEdge::Bottom)
 7897    } else if !tiling.left && pos.x < shadow_size {
 7898        Some(ResizeEdge::Left)
 7899    } else if !tiling.right && pos.x > window_size.width - shadow_size {
 7900        Some(ResizeEdge::Right)
 7901    } else {
 7902        None
 7903    }
 7904}
 7905
 7906fn join_pane_into_active(
 7907    active_pane: &Entity<Pane>,
 7908    pane: &Entity<Pane>,
 7909    window: &mut Window,
 7910    cx: &mut App,
 7911) {
 7912    if pane == active_pane {
 7913        return;
 7914    } else if pane.read(cx).items_len() == 0 {
 7915        pane.update(cx, |_, cx| {
 7916            cx.emit(pane::Event::Remove {
 7917                focus_on_pane: None,
 7918            });
 7919        })
 7920    } else {
 7921        move_all_items(pane, active_pane, window, cx);
 7922    }
 7923}
 7924
 7925fn move_all_items(
 7926    from_pane: &Entity<Pane>,
 7927    to_pane: &Entity<Pane>,
 7928    window: &mut Window,
 7929    cx: &mut App,
 7930) {
 7931    let destination_is_different = from_pane != to_pane;
 7932    let mut moved_items = 0;
 7933    for (item_ix, item_handle) in from_pane
 7934        .read(cx)
 7935        .items()
 7936        .enumerate()
 7937        .map(|(ix, item)| (ix, item.clone()))
 7938        .collect::<Vec<_>>()
 7939    {
 7940        let ix = item_ix - moved_items;
 7941        if destination_is_different {
 7942            // Close item from previous pane
 7943            from_pane.update(cx, |source, cx| {
 7944                source.remove_item_and_focus_on_pane(ix, false, to_pane.clone(), window, cx);
 7945            });
 7946            moved_items += 1;
 7947        }
 7948
 7949        // This automatically removes duplicate items in the pane
 7950        to_pane.update(cx, |destination, cx| {
 7951            destination.add_item(item_handle, true, true, None, window, cx);
 7952            window.focus(&destination.focus_handle(cx))
 7953        });
 7954    }
 7955}
 7956
 7957pub fn move_item(
 7958    source: &Entity<Pane>,
 7959    destination: &Entity<Pane>,
 7960    item_id_to_move: EntityId,
 7961    destination_index: usize,
 7962    activate: bool,
 7963    window: &mut Window,
 7964    cx: &mut App,
 7965) {
 7966    let Some((item_ix, item_handle)) = source
 7967        .read(cx)
 7968        .items()
 7969        .enumerate()
 7970        .find(|(_, item_handle)| item_handle.item_id() == item_id_to_move)
 7971        .map(|(ix, item)| (ix, item.clone()))
 7972    else {
 7973        // Tab was closed during drag
 7974        return;
 7975    };
 7976
 7977    if source != destination {
 7978        // Close item from previous pane
 7979        source.update(cx, |source, cx| {
 7980            source.remove_item_and_focus_on_pane(item_ix, false, destination.clone(), window, cx);
 7981        });
 7982    }
 7983
 7984    // This automatically removes duplicate items in the pane
 7985    destination.update(cx, |destination, cx| {
 7986        destination.add_item_inner(
 7987            item_handle,
 7988            activate,
 7989            activate,
 7990            activate,
 7991            Some(destination_index),
 7992            window,
 7993            cx,
 7994        );
 7995        if activate {
 7996            window.focus(&destination.focus_handle(cx))
 7997        }
 7998    });
 7999}
 8000
 8001pub fn move_active_item(
 8002    source: &Entity<Pane>,
 8003    destination: &Entity<Pane>,
 8004    focus_destination: bool,
 8005    close_if_empty: bool,
 8006    window: &mut Window,
 8007    cx: &mut App,
 8008) {
 8009    if source == destination {
 8010        return;
 8011    }
 8012    let Some(active_item) = source.read(cx).active_item() else {
 8013        return;
 8014    };
 8015    source.update(cx, |source_pane, cx| {
 8016        let item_id = active_item.item_id();
 8017        source_pane.remove_item(item_id, false, close_if_empty, window, cx);
 8018        destination.update(cx, |target_pane, cx| {
 8019            target_pane.add_item(
 8020                active_item,
 8021                focus_destination,
 8022                focus_destination,
 8023                Some(target_pane.items_len()),
 8024                window,
 8025                cx,
 8026            );
 8027        });
 8028    });
 8029}
 8030
 8031pub fn clone_active_item(
 8032    workspace_id: Option<WorkspaceId>,
 8033    source: &Entity<Pane>,
 8034    destination: &Entity<Pane>,
 8035    focus_destination: bool,
 8036    window: &mut Window,
 8037    cx: &mut App,
 8038) {
 8039    if source == destination {
 8040        return;
 8041    }
 8042    let Some(active_item) = source.read(cx).active_item() else {
 8043        return;
 8044    };
 8045    destination.update(cx, |target_pane, cx| {
 8046        let Some(clone) = active_item.clone_on_split(workspace_id, window, cx) else {
 8047            return;
 8048        };
 8049        target_pane.add_item(
 8050            clone,
 8051            focus_destination,
 8052            focus_destination,
 8053            Some(target_pane.items_len()),
 8054            window,
 8055            cx,
 8056        );
 8057    });
 8058}
 8059
 8060#[derive(Debug)]
 8061pub struct WorkspacePosition {
 8062    pub window_bounds: Option<WindowBounds>,
 8063    pub display: Option<Uuid>,
 8064    pub centered_layout: bool,
 8065}
 8066
 8067pub fn ssh_workspace_position_from_db(
 8068    host: String,
 8069    port: Option<u16>,
 8070    user: Option<String>,
 8071    paths_to_open: &[PathBuf],
 8072    cx: &App,
 8073) -> Task<Result<WorkspacePosition>> {
 8074    let paths = paths_to_open
 8075        .iter()
 8076        .map(|path| path.to_string_lossy().to_string())
 8077        .collect::<Vec<_>>();
 8078
 8079    cx.background_spawn(async move {
 8080        let serialized_ssh_project = persistence::DB
 8081            .get_or_create_ssh_project(host, port, paths, user)
 8082            .await
 8083            .context("fetching serialized ssh project")?;
 8084        let serialized_workspace =
 8085            persistence::DB.workspace_for_ssh_project(&serialized_ssh_project);
 8086
 8087        let (window_bounds, display) = if let Some(bounds) = window_bounds_env_override() {
 8088            (Some(WindowBounds::Windowed(bounds)), None)
 8089        } else {
 8090            let restorable_bounds = serialized_workspace
 8091                .as_ref()
 8092                .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 8093                .or_else(|| {
 8094                    let (display, window_bounds) = DB.last_window().log_err()?;
 8095                    Some((display?, window_bounds?))
 8096                });
 8097
 8098            if let Some((serialized_display, serialized_status)) = restorable_bounds {
 8099                (Some(serialized_status.0), Some(serialized_display))
 8100            } else {
 8101                (None, None)
 8102            }
 8103        };
 8104
 8105        let centered_layout = serialized_workspace
 8106            .as_ref()
 8107            .map(|w| w.centered_layout)
 8108            .unwrap_or(false);
 8109
 8110        Ok(WorkspacePosition {
 8111            window_bounds,
 8112            display,
 8113            centered_layout,
 8114        })
 8115    })
 8116}
 8117
 8118pub fn with_active_or_new_workspace(
 8119    cx: &mut App,
 8120    f: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send + 'static,
 8121) {
 8122    match cx.active_window().and_then(|w| w.downcast::<Workspace>()) {
 8123        Some(workspace) => {
 8124            cx.defer(move |cx| {
 8125                workspace
 8126                    .update(cx, |workspace, window, cx| f(workspace, window, cx))
 8127                    .log_err();
 8128            });
 8129        }
 8130        None => {
 8131            let app_state = AppState::global(cx);
 8132            if let Some(app_state) = app_state.upgrade() {
 8133                open_new(
 8134                    OpenOptions::default(),
 8135                    app_state,
 8136                    cx,
 8137                    move |workspace, window, cx| f(workspace, window, cx),
 8138                )
 8139                .detach_and_log_err(cx);
 8140            }
 8141        }
 8142    }
 8143}
 8144
 8145#[cfg(test)]
 8146mod tests {
 8147    use std::{cell::RefCell, rc::Rc};
 8148
 8149    use super::*;
 8150    use crate::{
 8151        dock::{PanelEvent, test::TestPanel},
 8152        item::{
 8153            ItemEvent,
 8154            test::{TestItem, TestProjectItem},
 8155        },
 8156    };
 8157    use fs::FakeFs;
 8158    use gpui::{
 8159        DismissEvent, Empty, EventEmitter, FocusHandle, Focusable, Render, TestAppContext,
 8160        UpdateGlobal, VisualTestContext, px,
 8161    };
 8162    use project::{Project, ProjectEntryId};
 8163    use serde_json::json;
 8164    use settings::SettingsStore;
 8165
 8166    #[gpui::test]
 8167    async fn test_tab_disambiguation(cx: &mut TestAppContext) {
 8168        init_test(cx);
 8169
 8170        let fs = FakeFs::new(cx.executor());
 8171        let project = Project::test(fs, [], cx).await;
 8172        let (workspace, cx) =
 8173            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8174
 8175        // Adding an item with no ambiguity renders the tab without detail.
 8176        let item1 = cx.new(|cx| {
 8177            let mut item = TestItem::new(cx);
 8178            item.tab_descriptions = Some(vec!["c", "b1/c", "a/b1/c"]);
 8179            item
 8180        });
 8181        workspace.update_in(cx, |workspace, window, cx| {
 8182            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8183        });
 8184        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(0)));
 8185
 8186        // Adding an item that creates ambiguity increases the level of detail on
 8187        // both tabs.
 8188        let item2 = cx.new_window_entity(|_window, cx| {
 8189            let mut item = TestItem::new(cx);
 8190            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8191            item
 8192        });
 8193        workspace.update_in(cx, |workspace, window, cx| {
 8194            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8195        });
 8196        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8197        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8198
 8199        // Adding an item that creates ambiguity increases the level of detail only
 8200        // on the ambiguous tabs. In this case, the ambiguity can't be resolved so
 8201        // we stop at the highest detail available.
 8202        let item3 = cx.new(|cx| {
 8203            let mut item = TestItem::new(cx);
 8204            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8205            item
 8206        });
 8207        workspace.update_in(cx, |workspace, window, cx| {
 8208            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8209        });
 8210        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8211        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8212        item3.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8213    }
 8214
 8215    #[gpui::test]
 8216    async fn test_tracking_active_path(cx: &mut TestAppContext) {
 8217        init_test(cx);
 8218
 8219        let fs = FakeFs::new(cx.executor());
 8220        fs.insert_tree(
 8221            "/root1",
 8222            json!({
 8223                "one.txt": "",
 8224                "two.txt": "",
 8225            }),
 8226        )
 8227        .await;
 8228        fs.insert_tree(
 8229            "/root2",
 8230            json!({
 8231                "three.txt": "",
 8232            }),
 8233        )
 8234        .await;
 8235
 8236        let project = Project::test(fs, ["root1".as_ref()], cx).await;
 8237        let (workspace, cx) =
 8238            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8239        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8240        let worktree_id = project.update(cx, |project, cx| {
 8241            project.worktrees(cx).next().unwrap().read(cx).id()
 8242        });
 8243
 8244        let item1 = cx.new(|cx| {
 8245            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
 8246        });
 8247        let item2 = cx.new(|cx| {
 8248            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "two.txt", cx)])
 8249        });
 8250
 8251        // Add an item to an empty pane
 8252        workspace.update_in(cx, |workspace, window, cx| {
 8253            workspace.add_item_to_active_pane(Box::new(item1), None, true, window, cx)
 8254        });
 8255        project.update(cx, |project, cx| {
 8256            assert_eq!(
 8257                project.active_entry(),
 8258                project
 8259                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
 8260                    .map(|e| e.id)
 8261            );
 8262        });
 8263        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8264
 8265        // Add a second item to a non-empty pane
 8266        workspace.update_in(cx, |workspace, window, cx| {
 8267            workspace.add_item_to_active_pane(Box::new(item2), None, true, window, cx)
 8268        });
 8269        assert_eq!(cx.window_title().as_deref(), Some("root1 — two.txt"));
 8270        project.update(cx, |project, cx| {
 8271            assert_eq!(
 8272                project.active_entry(),
 8273                project
 8274                    .entry_for_path(&(worktree_id, "two.txt").into(), cx)
 8275                    .map(|e| e.id)
 8276            );
 8277        });
 8278
 8279        // Close the active item
 8280        pane.update_in(cx, |pane, window, cx| {
 8281            pane.close_active_item(&Default::default(), window, cx)
 8282        })
 8283        .await
 8284        .unwrap();
 8285        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8286        project.update(cx, |project, cx| {
 8287            assert_eq!(
 8288                project.active_entry(),
 8289                project
 8290                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
 8291                    .map(|e| e.id)
 8292            );
 8293        });
 8294
 8295        // Add a project folder
 8296        project
 8297            .update(cx, |project, cx| {
 8298                project.find_or_create_worktree("root2", true, cx)
 8299            })
 8300            .await
 8301            .unwrap();
 8302        assert_eq!(cx.window_title().as_deref(), Some("root1, root2 — one.txt"));
 8303
 8304        // Remove a project folder
 8305        project.update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
 8306        assert_eq!(cx.window_title().as_deref(), Some("root2 — one.txt"));
 8307    }
 8308
 8309    #[gpui::test]
 8310    async fn test_close_window(cx: &mut TestAppContext) {
 8311        init_test(cx);
 8312
 8313        let fs = FakeFs::new(cx.executor());
 8314        fs.insert_tree("/root", json!({ "one": "" })).await;
 8315
 8316        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8317        let (workspace, cx) =
 8318            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8319
 8320        // When there are no dirty items, there's nothing to do.
 8321        let item1 = cx.new(TestItem::new);
 8322        workspace.update_in(cx, |w, window, cx| {
 8323            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx)
 8324        });
 8325        let task = workspace.update_in(cx, |w, window, cx| {
 8326            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8327        });
 8328        assert!(task.await.unwrap());
 8329
 8330        // When there are dirty untitled items, prompt to save each one. If the user
 8331        // cancels any prompt, then abort.
 8332        let item2 = cx.new(|cx| TestItem::new(cx).with_dirty(true));
 8333        let item3 = cx.new(|cx| {
 8334            TestItem::new(cx)
 8335                .with_dirty(true)
 8336                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8337        });
 8338        workspace.update_in(cx, |w, window, cx| {
 8339            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8340            w.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8341        });
 8342        let task = workspace.update_in(cx, |w, window, cx| {
 8343            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8344        });
 8345        cx.executor().run_until_parked();
 8346        cx.simulate_prompt_answer("Cancel"); // cancel save all
 8347        cx.executor().run_until_parked();
 8348        assert!(!cx.has_pending_prompt());
 8349        assert!(!task.await.unwrap());
 8350    }
 8351
 8352    #[gpui::test]
 8353    async fn test_close_window_with_serializable_items(cx: &mut TestAppContext) {
 8354        init_test(cx);
 8355
 8356        // Register TestItem as a serializable item
 8357        cx.update(|cx| {
 8358            register_serializable_item::<TestItem>(cx);
 8359        });
 8360
 8361        let fs = FakeFs::new(cx.executor());
 8362        fs.insert_tree("/root", json!({ "one": "" })).await;
 8363
 8364        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8365        let (workspace, cx) =
 8366            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8367
 8368        // When there are dirty untitled items, but they can serialize, then there is no prompt.
 8369        let item1 = cx.new(|cx| {
 8370            TestItem::new(cx)
 8371                .with_dirty(true)
 8372                .with_serialize(|| Some(Task::ready(Ok(()))))
 8373        });
 8374        let item2 = cx.new(|cx| {
 8375            TestItem::new(cx)
 8376                .with_dirty(true)
 8377                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8378                .with_serialize(|| Some(Task::ready(Ok(()))))
 8379        });
 8380        workspace.update_in(cx, |w, window, cx| {
 8381            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8382            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8383        });
 8384        let task = workspace.update_in(cx, |w, window, cx| {
 8385            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8386        });
 8387        assert!(task.await.unwrap());
 8388    }
 8389
 8390    #[gpui::test]
 8391    async fn test_close_pane_items(cx: &mut TestAppContext) {
 8392        init_test(cx);
 8393
 8394        let fs = FakeFs::new(cx.executor());
 8395
 8396        let project = Project::test(fs, None, cx).await;
 8397        let (workspace, cx) =
 8398            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8399
 8400        let item1 = cx.new(|cx| {
 8401            TestItem::new(cx)
 8402                .with_dirty(true)
 8403                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 8404        });
 8405        let item2 = cx.new(|cx| {
 8406            TestItem::new(cx)
 8407                .with_dirty(true)
 8408                .with_conflict(true)
 8409                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 8410        });
 8411        let item3 = cx.new(|cx| {
 8412            TestItem::new(cx)
 8413                .with_dirty(true)
 8414                .with_conflict(true)
 8415                .with_project_items(&[dirty_project_item(3, "3.txt", cx)])
 8416        });
 8417        let item4 = cx.new(|cx| {
 8418            TestItem::new(cx).with_dirty(true).with_project_items(&[{
 8419                let project_item = TestProjectItem::new_untitled(cx);
 8420                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8421                project_item
 8422            }])
 8423        });
 8424        let pane = workspace.update_in(cx, |workspace, window, cx| {
 8425            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8426            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8427            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8428            workspace.add_item_to_active_pane(Box::new(item4.clone()), None, true, window, cx);
 8429            workspace.active_pane().clone()
 8430        });
 8431
 8432        let close_items = pane.update_in(cx, |pane, window, cx| {
 8433            pane.activate_item(1, true, true, window, cx);
 8434            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8435            let item1_id = item1.item_id();
 8436            let item3_id = item3.item_id();
 8437            let item4_id = item4.item_id();
 8438            pane.close_items(window, cx, SaveIntent::Close, move |id| {
 8439                [item1_id, item3_id, item4_id].contains(&id)
 8440            })
 8441        });
 8442        cx.executor().run_until_parked();
 8443
 8444        assert!(cx.has_pending_prompt());
 8445        cx.simulate_prompt_answer("Save all");
 8446
 8447        cx.executor().run_until_parked();
 8448
 8449        // Item 1 is saved. There's a prompt to save item 3.
 8450        pane.update(cx, |pane, cx| {
 8451            assert_eq!(item1.read(cx).save_count, 1);
 8452            assert_eq!(item1.read(cx).save_as_count, 0);
 8453            assert_eq!(item1.read(cx).reload_count, 0);
 8454            assert_eq!(pane.items_len(), 3);
 8455            assert_eq!(pane.active_item().unwrap().item_id(), item3.item_id());
 8456        });
 8457        assert!(cx.has_pending_prompt());
 8458
 8459        // Cancel saving item 3.
 8460        cx.simulate_prompt_answer("Discard");
 8461        cx.executor().run_until_parked();
 8462
 8463        // Item 3 is reloaded. There's a prompt to save item 4.
 8464        pane.update(cx, |pane, cx| {
 8465            assert_eq!(item3.read(cx).save_count, 0);
 8466            assert_eq!(item3.read(cx).save_as_count, 0);
 8467            assert_eq!(item3.read(cx).reload_count, 1);
 8468            assert_eq!(pane.items_len(), 2);
 8469            assert_eq!(pane.active_item().unwrap().item_id(), item4.item_id());
 8470        });
 8471
 8472        // There's a prompt for a path for item 4.
 8473        cx.simulate_new_path_selection(|_| Some(Default::default()));
 8474        close_items.await.unwrap();
 8475
 8476        // The requested items are closed.
 8477        pane.update(cx, |pane, cx| {
 8478            assert_eq!(item4.read(cx).save_count, 0);
 8479            assert_eq!(item4.read(cx).save_as_count, 1);
 8480            assert_eq!(item4.read(cx).reload_count, 0);
 8481            assert_eq!(pane.items_len(), 1);
 8482            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8483        });
 8484    }
 8485
 8486    #[gpui::test]
 8487    async fn test_prompting_to_save_only_on_last_item_for_entry(cx: &mut TestAppContext) {
 8488        init_test(cx);
 8489
 8490        let fs = FakeFs::new(cx.executor());
 8491        let project = Project::test(fs, [], cx).await;
 8492        let (workspace, cx) =
 8493            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8494
 8495        // Create several workspace items with single project entries, and two
 8496        // workspace items with multiple project entries.
 8497        let single_entry_items = (0..=4)
 8498            .map(|project_entry_id| {
 8499                cx.new(|cx| {
 8500                    TestItem::new(cx)
 8501                        .with_dirty(true)
 8502                        .with_project_items(&[dirty_project_item(
 8503                            project_entry_id,
 8504                            &format!("{project_entry_id}.txt"),
 8505                            cx,
 8506                        )])
 8507                })
 8508            })
 8509            .collect::<Vec<_>>();
 8510        let item_2_3 = cx.new(|cx| {
 8511            TestItem::new(cx)
 8512                .with_dirty(true)
 8513                .with_singleton(false)
 8514                .with_project_items(&[
 8515                    single_entry_items[2].read(cx).project_items[0].clone(),
 8516                    single_entry_items[3].read(cx).project_items[0].clone(),
 8517                ])
 8518        });
 8519        let item_3_4 = cx.new(|cx| {
 8520            TestItem::new(cx)
 8521                .with_dirty(true)
 8522                .with_singleton(false)
 8523                .with_project_items(&[
 8524                    single_entry_items[3].read(cx).project_items[0].clone(),
 8525                    single_entry_items[4].read(cx).project_items[0].clone(),
 8526                ])
 8527        });
 8528
 8529        // Create two panes that contain the following project entries:
 8530        //   left pane:
 8531        //     multi-entry items:   (2, 3)
 8532        //     single-entry items:  0, 2, 3, 4
 8533        //   right pane:
 8534        //     single-entry items:  4, 1
 8535        //     multi-entry items:   (3, 4)
 8536        let (left_pane, right_pane) = workspace.update_in(cx, |workspace, window, cx| {
 8537            let left_pane = workspace.active_pane().clone();
 8538            workspace.add_item_to_active_pane(Box::new(item_2_3.clone()), None, true, window, cx);
 8539            workspace.add_item_to_active_pane(
 8540                single_entry_items[0].boxed_clone(),
 8541                None,
 8542                true,
 8543                window,
 8544                cx,
 8545            );
 8546            workspace.add_item_to_active_pane(
 8547                single_entry_items[2].boxed_clone(),
 8548                None,
 8549                true,
 8550                window,
 8551                cx,
 8552            );
 8553            workspace.add_item_to_active_pane(
 8554                single_entry_items[3].boxed_clone(),
 8555                None,
 8556                true,
 8557                window,
 8558                cx,
 8559            );
 8560            workspace.add_item_to_active_pane(
 8561                single_entry_items[4].boxed_clone(),
 8562                None,
 8563                true,
 8564                window,
 8565                cx,
 8566            );
 8567
 8568            let right_pane = workspace
 8569                .split_and_clone(left_pane.clone(), SplitDirection::Right, window, cx)
 8570                .unwrap();
 8571
 8572            right_pane.update(cx, |pane, cx| {
 8573                pane.add_item(
 8574                    single_entry_items[1].boxed_clone(),
 8575                    true,
 8576                    true,
 8577                    None,
 8578                    window,
 8579                    cx,
 8580                );
 8581                pane.add_item(Box::new(item_3_4.clone()), true, true, None, window, cx);
 8582            });
 8583
 8584            (left_pane, right_pane)
 8585        });
 8586
 8587        cx.focus(&right_pane);
 8588
 8589        let mut close = right_pane.update_in(cx, |pane, window, cx| {
 8590            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8591                .unwrap()
 8592        });
 8593        cx.executor().run_until_parked();
 8594
 8595        let msg = cx.pending_prompt().unwrap().0;
 8596        assert!(msg.contains("1.txt"));
 8597        assert!(!msg.contains("2.txt"));
 8598        assert!(!msg.contains("3.txt"));
 8599        assert!(!msg.contains("4.txt"));
 8600
 8601        cx.simulate_prompt_answer("Cancel");
 8602        close.await;
 8603
 8604        left_pane
 8605            .update_in(cx, |left_pane, window, cx| {
 8606                left_pane.close_item_by_id(
 8607                    single_entry_items[3].entity_id(),
 8608                    SaveIntent::Skip,
 8609                    window,
 8610                    cx,
 8611                )
 8612            })
 8613            .await
 8614            .unwrap();
 8615
 8616        close = right_pane.update_in(cx, |pane, window, cx| {
 8617            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8618                .unwrap()
 8619        });
 8620        cx.executor().run_until_parked();
 8621
 8622        let details = cx.pending_prompt().unwrap().1;
 8623        assert!(details.contains("1.txt"));
 8624        assert!(!details.contains("2.txt"));
 8625        assert!(details.contains("3.txt"));
 8626        // ideally this assertion could be made, but today we can only
 8627        // save whole items not project items, so the orphaned item 3 causes
 8628        // 4 to be saved too.
 8629        // assert!(!details.contains("4.txt"));
 8630
 8631        cx.simulate_prompt_answer("Save all");
 8632
 8633        cx.executor().run_until_parked();
 8634        close.await;
 8635        right_pane.read_with(cx, |pane, _| {
 8636            assert_eq!(pane.items_len(), 0);
 8637        });
 8638    }
 8639
 8640    #[gpui::test]
 8641    async fn test_autosave(cx: &mut gpui::TestAppContext) {
 8642        init_test(cx);
 8643
 8644        let fs = FakeFs::new(cx.executor());
 8645        let project = Project::test(fs, [], cx).await;
 8646        let (workspace, cx) =
 8647            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8648        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8649
 8650        let item = cx.new(|cx| {
 8651            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8652        });
 8653        let item_id = item.entity_id();
 8654        workspace.update_in(cx, |workspace, window, cx| {
 8655            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8656        });
 8657
 8658        // Autosave on window change.
 8659        item.update(cx, |item, cx| {
 8660            SettingsStore::update_global(cx, |settings, cx| {
 8661                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8662                    settings.autosave = Some(AutosaveSetting::OnWindowChange);
 8663                })
 8664            });
 8665            item.is_dirty = true;
 8666        });
 8667
 8668        // Deactivating the window saves the file.
 8669        cx.deactivate_window();
 8670        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8671
 8672        // Re-activating the window doesn't save the file.
 8673        cx.update(|window, _| window.activate_window());
 8674        cx.executor().run_until_parked();
 8675        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8676
 8677        // Autosave on focus change.
 8678        item.update_in(cx, |item, window, cx| {
 8679            cx.focus_self(window);
 8680            SettingsStore::update_global(cx, |settings, cx| {
 8681                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8682                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
 8683                })
 8684            });
 8685            item.is_dirty = true;
 8686        });
 8687
 8688        // Blurring the item saves the file.
 8689        item.update_in(cx, |_, window, _| window.blur());
 8690        cx.executor().run_until_parked();
 8691        item.read_with(cx, |item, _| assert_eq!(item.save_count, 2));
 8692
 8693        // Deactivating the window still saves the file.
 8694        item.update_in(cx, |item, window, cx| {
 8695            cx.focus_self(window);
 8696            item.is_dirty = true;
 8697        });
 8698        cx.deactivate_window();
 8699        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
 8700
 8701        // Autosave after delay.
 8702        item.update(cx, |item, cx| {
 8703            SettingsStore::update_global(cx, |settings, cx| {
 8704                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8705                    settings.autosave = Some(AutosaveSetting::AfterDelay { milliseconds: 500 });
 8706                })
 8707            });
 8708            item.is_dirty = true;
 8709            cx.emit(ItemEvent::Edit);
 8710        });
 8711
 8712        // Delay hasn't fully expired, so the file is still dirty and unsaved.
 8713        cx.executor().advance_clock(Duration::from_millis(250));
 8714        item.read_with(cx, |item, _| assert_eq!(item.save_count, 3));
 8715
 8716        // After delay expires, the file is saved.
 8717        cx.executor().advance_clock(Duration::from_millis(250));
 8718        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
 8719
 8720        // Autosave on focus change, ensuring closing the tab counts as such.
 8721        item.update(cx, |item, cx| {
 8722            SettingsStore::update_global(cx, |settings, cx| {
 8723                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8724                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
 8725                })
 8726            });
 8727            item.is_dirty = true;
 8728            for project_item in &mut item.project_items {
 8729                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8730            }
 8731        });
 8732
 8733        pane.update_in(cx, |pane, window, cx| {
 8734            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8735        })
 8736        .await
 8737        .unwrap();
 8738        assert!(!cx.has_pending_prompt());
 8739        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8740
 8741        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
 8742        workspace.update_in(cx, |workspace, window, cx| {
 8743            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8744        });
 8745        item.update_in(cx, |item, window, cx| {
 8746            item.project_items[0].update(cx, |item, _| {
 8747                item.entry_id = None;
 8748            });
 8749            item.is_dirty = true;
 8750            window.blur();
 8751        });
 8752        cx.run_until_parked();
 8753        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8754
 8755        // Ensure autosave is prevented for deleted files also when closing the buffer.
 8756        let _close_items = pane.update_in(cx, |pane, window, cx| {
 8757            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8758        });
 8759        cx.run_until_parked();
 8760        assert!(cx.has_pending_prompt());
 8761        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8762    }
 8763
 8764    #[gpui::test]
 8765    async fn test_pane_navigation(cx: &mut gpui::TestAppContext) {
 8766        init_test(cx);
 8767
 8768        let fs = FakeFs::new(cx.executor());
 8769
 8770        let project = Project::test(fs, [], cx).await;
 8771        let (workspace, cx) =
 8772            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8773
 8774        let item = cx.new(|cx| {
 8775            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8776        });
 8777        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8778        let toolbar = pane.read_with(cx, |pane, _| pane.toolbar().clone());
 8779        let toolbar_notify_count = Rc::new(RefCell::new(0));
 8780
 8781        workspace.update_in(cx, |workspace, window, cx| {
 8782            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8783            let toolbar_notification_count = toolbar_notify_count.clone();
 8784            cx.observe_in(&toolbar, window, move |_, _, _, _| {
 8785                *toolbar_notification_count.borrow_mut() += 1
 8786            })
 8787            .detach();
 8788        });
 8789
 8790        pane.read_with(cx, |pane, _| {
 8791            assert!(!pane.can_navigate_backward());
 8792            assert!(!pane.can_navigate_forward());
 8793        });
 8794
 8795        item.update_in(cx, |item, _, cx| {
 8796            item.set_state("one".to_string(), cx);
 8797        });
 8798
 8799        // Toolbar must be notified to re-render the navigation buttons
 8800        assert_eq!(*toolbar_notify_count.borrow(), 1);
 8801
 8802        pane.read_with(cx, |pane, _| {
 8803            assert!(pane.can_navigate_backward());
 8804            assert!(!pane.can_navigate_forward());
 8805        });
 8806
 8807        workspace
 8808            .update_in(cx, |workspace, window, cx| {
 8809                workspace.go_back(pane.downgrade(), window, cx)
 8810            })
 8811            .await
 8812            .unwrap();
 8813
 8814        assert_eq!(*toolbar_notify_count.borrow(), 2);
 8815        pane.read_with(cx, |pane, _| {
 8816            assert!(!pane.can_navigate_backward());
 8817            assert!(pane.can_navigate_forward());
 8818        });
 8819    }
 8820
 8821    #[gpui::test]
 8822    async fn test_toggle_docks_and_panels(cx: &mut gpui::TestAppContext) {
 8823        init_test(cx);
 8824        let fs = FakeFs::new(cx.executor());
 8825
 8826        let project = Project::test(fs, [], cx).await;
 8827        let (workspace, cx) =
 8828            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8829
 8830        let panel = workspace.update_in(cx, |workspace, window, cx| {
 8831            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 8832            workspace.add_panel(panel.clone(), window, cx);
 8833
 8834            workspace
 8835                .right_dock()
 8836                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
 8837
 8838            panel
 8839        });
 8840
 8841        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8842        pane.update_in(cx, |pane, window, cx| {
 8843            let item = cx.new(TestItem::new);
 8844            pane.add_item(Box::new(item), true, true, None, window, cx);
 8845        });
 8846
 8847        // Transfer focus from center to panel
 8848        workspace.update_in(cx, |workspace, window, cx| {
 8849            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8850        });
 8851
 8852        workspace.update_in(cx, |workspace, window, cx| {
 8853            assert!(workspace.right_dock().read(cx).is_open());
 8854            assert!(!panel.is_zoomed(window, cx));
 8855            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8856        });
 8857
 8858        // Transfer focus from panel to center
 8859        workspace.update_in(cx, |workspace, window, cx| {
 8860            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8861        });
 8862
 8863        workspace.update_in(cx, |workspace, window, cx| {
 8864            assert!(workspace.right_dock().read(cx).is_open());
 8865            assert!(!panel.is_zoomed(window, cx));
 8866            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8867        });
 8868
 8869        // Close the dock
 8870        workspace.update_in(cx, |workspace, window, cx| {
 8871            workspace.toggle_dock(DockPosition::Right, window, cx);
 8872        });
 8873
 8874        workspace.update_in(cx, |workspace, window, cx| {
 8875            assert!(!workspace.right_dock().read(cx).is_open());
 8876            assert!(!panel.is_zoomed(window, cx));
 8877            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8878        });
 8879
 8880        // Open the dock
 8881        workspace.update_in(cx, |workspace, window, cx| {
 8882            workspace.toggle_dock(DockPosition::Right, window, cx);
 8883        });
 8884
 8885        workspace.update_in(cx, |workspace, window, cx| {
 8886            assert!(workspace.right_dock().read(cx).is_open());
 8887            assert!(!panel.is_zoomed(window, cx));
 8888            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8889        });
 8890
 8891        // Focus and zoom panel
 8892        panel.update_in(cx, |panel, window, cx| {
 8893            cx.focus_self(window);
 8894            panel.set_zoomed(true, window, cx)
 8895        });
 8896
 8897        workspace.update_in(cx, |workspace, window, cx| {
 8898            assert!(workspace.right_dock().read(cx).is_open());
 8899            assert!(panel.is_zoomed(window, cx));
 8900            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8901        });
 8902
 8903        // Transfer focus to the center closes the dock
 8904        workspace.update_in(cx, |workspace, window, cx| {
 8905            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8906        });
 8907
 8908        workspace.update_in(cx, |workspace, window, cx| {
 8909            assert!(!workspace.right_dock().read(cx).is_open());
 8910            assert!(panel.is_zoomed(window, cx));
 8911            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8912        });
 8913
 8914        // Transferring focus back to the panel keeps it zoomed
 8915        workspace.update_in(cx, |workspace, window, cx| {
 8916            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8917        });
 8918
 8919        workspace.update_in(cx, |workspace, window, cx| {
 8920            assert!(workspace.right_dock().read(cx).is_open());
 8921            assert!(panel.is_zoomed(window, cx));
 8922            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8923        });
 8924
 8925        // Close the dock while it is zoomed
 8926        workspace.update_in(cx, |workspace, window, cx| {
 8927            workspace.toggle_dock(DockPosition::Right, window, cx)
 8928        });
 8929
 8930        workspace.update_in(cx, |workspace, window, cx| {
 8931            assert!(!workspace.right_dock().read(cx).is_open());
 8932            assert!(panel.is_zoomed(window, cx));
 8933            assert!(workspace.zoomed.is_none());
 8934            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8935        });
 8936
 8937        // Opening the dock, when it's zoomed, retains focus
 8938        workspace.update_in(cx, |workspace, window, cx| {
 8939            workspace.toggle_dock(DockPosition::Right, window, cx)
 8940        });
 8941
 8942        workspace.update_in(cx, |workspace, window, cx| {
 8943            assert!(workspace.right_dock().read(cx).is_open());
 8944            assert!(panel.is_zoomed(window, cx));
 8945            assert!(workspace.zoomed.is_some());
 8946            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8947        });
 8948
 8949        // Unzoom and close the panel, zoom the active pane.
 8950        panel.update_in(cx, |panel, window, cx| panel.set_zoomed(false, window, cx));
 8951        workspace.update_in(cx, |workspace, window, cx| {
 8952            workspace.toggle_dock(DockPosition::Right, window, cx)
 8953        });
 8954        pane.update_in(cx, |pane, window, cx| {
 8955            pane.toggle_zoom(&Default::default(), window, cx)
 8956        });
 8957
 8958        // Opening a dock unzooms the pane.
 8959        workspace.update_in(cx, |workspace, window, cx| {
 8960            workspace.toggle_dock(DockPosition::Right, window, cx)
 8961        });
 8962        workspace.update_in(cx, |workspace, window, cx| {
 8963            let pane = pane.read(cx);
 8964            assert!(!pane.is_zoomed());
 8965            assert!(!pane.focus_handle(cx).is_focused(window));
 8966            assert!(workspace.right_dock().read(cx).is_open());
 8967            assert!(workspace.zoomed.is_none());
 8968        });
 8969    }
 8970
 8971    #[gpui::test]
 8972    async fn test_join_pane_into_next(cx: &mut gpui::TestAppContext) {
 8973        init_test(cx);
 8974
 8975        let fs = FakeFs::new(cx.executor());
 8976
 8977        let project = Project::test(fs, None, cx).await;
 8978        let (workspace, cx) =
 8979            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8980
 8981        // Let's arrange the panes like this:
 8982        //
 8983        // +-----------------------+
 8984        // |         top           |
 8985        // +------+--------+-------+
 8986        // | left | center | right |
 8987        // +------+--------+-------+
 8988        // |        bottom         |
 8989        // +-----------------------+
 8990
 8991        let top_item = cx.new(|cx| {
 8992            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "top.txt", cx)])
 8993        });
 8994        let bottom_item = cx.new(|cx| {
 8995            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "bottom.txt", cx)])
 8996        });
 8997        let left_item = cx.new(|cx| {
 8998            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "left.txt", cx)])
 8999        });
 9000        let right_item = cx.new(|cx| {
 9001            TestItem::new(cx).with_project_items(&[TestProjectItem::new(4, "right.txt", cx)])
 9002        });
 9003        let center_item = cx.new(|cx| {
 9004            TestItem::new(cx).with_project_items(&[TestProjectItem::new(5, "center.txt", cx)])
 9005        });
 9006
 9007        let top_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9008            let top_pane_id = workspace.active_pane().entity_id();
 9009            workspace.add_item_to_active_pane(Box::new(top_item.clone()), None, false, window, cx);
 9010            workspace.split_pane(
 9011                workspace.active_pane().clone(),
 9012                SplitDirection::Down,
 9013                window,
 9014                cx,
 9015            );
 9016            top_pane_id
 9017        });
 9018        let bottom_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9019            let bottom_pane_id = workspace.active_pane().entity_id();
 9020            workspace.add_item_to_active_pane(
 9021                Box::new(bottom_item.clone()),
 9022                None,
 9023                false,
 9024                window,
 9025                cx,
 9026            );
 9027            workspace.split_pane(
 9028                workspace.active_pane().clone(),
 9029                SplitDirection::Up,
 9030                window,
 9031                cx,
 9032            );
 9033            bottom_pane_id
 9034        });
 9035        let left_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9036            let left_pane_id = workspace.active_pane().entity_id();
 9037            workspace.add_item_to_active_pane(Box::new(left_item.clone()), None, false, window, cx);
 9038            workspace.split_pane(
 9039                workspace.active_pane().clone(),
 9040                SplitDirection::Right,
 9041                window,
 9042                cx,
 9043            );
 9044            left_pane_id
 9045        });
 9046        let right_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9047            let right_pane_id = workspace.active_pane().entity_id();
 9048            workspace.add_item_to_active_pane(
 9049                Box::new(right_item.clone()),
 9050                None,
 9051                false,
 9052                window,
 9053                cx,
 9054            );
 9055            workspace.split_pane(
 9056                workspace.active_pane().clone(),
 9057                SplitDirection::Left,
 9058                window,
 9059                cx,
 9060            );
 9061            right_pane_id
 9062        });
 9063        let center_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9064            let center_pane_id = workspace.active_pane().entity_id();
 9065            workspace.add_item_to_active_pane(
 9066                Box::new(center_item.clone()),
 9067                None,
 9068                false,
 9069                window,
 9070                cx,
 9071            );
 9072            center_pane_id
 9073        });
 9074        cx.executor().run_until_parked();
 9075
 9076        workspace.update_in(cx, |workspace, window, cx| {
 9077            assert_eq!(center_pane_id, workspace.active_pane().entity_id());
 9078
 9079            // Join into next from center pane into right
 9080            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9081        });
 9082
 9083        workspace.update_in(cx, |workspace, window, cx| {
 9084            let active_pane = workspace.active_pane();
 9085            assert_eq!(right_pane_id, active_pane.entity_id());
 9086            assert_eq!(2, active_pane.read(cx).items_len());
 9087            let item_ids_in_pane =
 9088                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9089            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9090            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9091
 9092            // Join into next from right pane into bottom
 9093            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9094        });
 9095
 9096        workspace.update_in(cx, |workspace, window, cx| {
 9097            let active_pane = workspace.active_pane();
 9098            assert_eq!(bottom_pane_id, active_pane.entity_id());
 9099            assert_eq!(3, active_pane.read(cx).items_len());
 9100            let item_ids_in_pane =
 9101                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9102            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9103            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9104            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9105
 9106            // Join into next from bottom pane into left
 9107            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9108        });
 9109
 9110        workspace.update_in(cx, |workspace, window, cx| {
 9111            let active_pane = workspace.active_pane();
 9112            assert_eq!(left_pane_id, active_pane.entity_id());
 9113            assert_eq!(4, active_pane.read(cx).items_len());
 9114            let item_ids_in_pane =
 9115                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9116            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9117            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9118            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9119            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9120
 9121            // Join into next from left pane into top
 9122            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9123        });
 9124
 9125        workspace.update_in(cx, |workspace, window, cx| {
 9126            let active_pane = workspace.active_pane();
 9127            assert_eq!(top_pane_id, active_pane.entity_id());
 9128            assert_eq!(5, active_pane.read(cx).items_len());
 9129            let item_ids_in_pane =
 9130                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9131            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9132            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9133            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9134            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9135            assert!(item_ids_in_pane.contains(&top_item.item_id()));
 9136
 9137            // Single pane left: no-op
 9138            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx)
 9139        });
 9140
 9141        workspace.update(cx, |workspace, _cx| {
 9142            let active_pane = workspace.active_pane();
 9143            assert_eq!(top_pane_id, active_pane.entity_id());
 9144        });
 9145    }
 9146
 9147    fn add_an_item_to_active_pane(
 9148        cx: &mut VisualTestContext,
 9149        workspace: &Entity<Workspace>,
 9150        item_id: u64,
 9151    ) -> Entity<TestItem> {
 9152        let item = cx.new(|cx| {
 9153            TestItem::new(cx).with_project_items(&[TestProjectItem::new(
 9154                item_id,
 9155                "item{item_id}.txt",
 9156                cx,
 9157            )])
 9158        });
 9159        workspace.update_in(cx, |workspace, window, cx| {
 9160            workspace.add_item_to_active_pane(Box::new(item.clone()), None, false, window, cx);
 9161        });
 9162        return item;
 9163    }
 9164
 9165    fn split_pane(cx: &mut VisualTestContext, workspace: &Entity<Workspace>) -> Entity<Pane> {
 9166        return workspace.update_in(cx, |workspace, window, cx| {
 9167            let new_pane = workspace.split_pane(
 9168                workspace.active_pane().clone(),
 9169                SplitDirection::Right,
 9170                window,
 9171                cx,
 9172            );
 9173            new_pane
 9174        });
 9175    }
 9176
 9177    #[gpui::test]
 9178    async fn test_join_all_panes(cx: &mut gpui::TestAppContext) {
 9179        init_test(cx);
 9180        let fs = FakeFs::new(cx.executor());
 9181        let project = Project::test(fs, None, cx).await;
 9182        let (workspace, cx) =
 9183            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9184
 9185        add_an_item_to_active_pane(cx, &workspace, 1);
 9186        split_pane(cx, &workspace);
 9187        add_an_item_to_active_pane(cx, &workspace, 2);
 9188        split_pane(cx, &workspace); // empty pane
 9189        split_pane(cx, &workspace);
 9190        let last_item = add_an_item_to_active_pane(cx, &workspace, 3);
 9191
 9192        cx.executor().run_until_parked();
 9193
 9194        workspace.update(cx, |workspace, cx| {
 9195            let num_panes = workspace.panes().len();
 9196            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9197            let active_item = workspace
 9198                .active_pane()
 9199                .read(cx)
 9200                .active_item()
 9201                .expect("item is in focus");
 9202
 9203            assert_eq!(num_panes, 4);
 9204            assert_eq!(num_items_in_current_pane, 1);
 9205            assert_eq!(active_item.item_id(), last_item.item_id());
 9206        });
 9207
 9208        workspace.update_in(cx, |workspace, window, cx| {
 9209            workspace.join_all_panes(window, cx);
 9210        });
 9211
 9212        workspace.update(cx, |workspace, cx| {
 9213            let num_panes = workspace.panes().len();
 9214            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9215            let active_item = workspace
 9216                .active_pane()
 9217                .read(cx)
 9218                .active_item()
 9219                .expect("item is in focus");
 9220
 9221            assert_eq!(num_panes, 1);
 9222            assert_eq!(num_items_in_current_pane, 3);
 9223            assert_eq!(active_item.item_id(), last_item.item_id());
 9224        });
 9225    }
 9226    struct TestModal(FocusHandle);
 9227
 9228    impl TestModal {
 9229        fn new(_: &mut Window, cx: &mut Context<Self>) -> Self {
 9230            Self(cx.focus_handle())
 9231        }
 9232    }
 9233
 9234    impl EventEmitter<DismissEvent> for TestModal {}
 9235
 9236    impl Focusable for TestModal {
 9237        fn focus_handle(&self, _cx: &App) -> FocusHandle {
 9238            self.0.clone()
 9239        }
 9240    }
 9241
 9242    impl ModalView for TestModal {}
 9243
 9244    impl Render for TestModal {
 9245        fn render(
 9246            &mut self,
 9247            _window: &mut Window,
 9248            _cx: &mut Context<TestModal>,
 9249        ) -> impl IntoElement {
 9250            div().track_focus(&self.0)
 9251        }
 9252    }
 9253
 9254    #[gpui::test]
 9255    async fn test_panels(cx: &mut gpui::TestAppContext) {
 9256        init_test(cx);
 9257        let fs = FakeFs::new(cx.executor());
 9258
 9259        let project = Project::test(fs, [], cx).await;
 9260        let (workspace, cx) =
 9261            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9262
 9263        let (panel_1, panel_2) = workspace.update_in(cx, |workspace, window, cx| {
 9264            let panel_1 = cx.new(|cx| TestPanel::new(DockPosition::Left, cx));
 9265            workspace.add_panel(panel_1.clone(), window, cx);
 9266            workspace.toggle_dock(DockPosition::Left, window, cx);
 9267            let panel_2 = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 9268            workspace.add_panel(panel_2.clone(), window, cx);
 9269            workspace.toggle_dock(DockPosition::Right, window, cx);
 9270
 9271            let left_dock = workspace.left_dock();
 9272            assert_eq!(
 9273                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9274                panel_1.panel_id()
 9275            );
 9276            assert_eq!(
 9277                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9278                panel_1.size(window, cx)
 9279            );
 9280
 9281            left_dock.update(cx, |left_dock, cx| {
 9282                left_dock.resize_active_panel(Some(px(1337.)), window, cx)
 9283            });
 9284            assert_eq!(
 9285                workspace
 9286                    .right_dock()
 9287                    .read(cx)
 9288                    .visible_panel()
 9289                    .unwrap()
 9290                    .panel_id(),
 9291                panel_2.panel_id(),
 9292            );
 9293
 9294            (panel_1, panel_2)
 9295        });
 9296
 9297        // Move panel_1 to the right
 9298        panel_1.update_in(cx, |panel_1, window, cx| {
 9299            panel_1.set_position(DockPosition::Right, window, cx)
 9300        });
 9301
 9302        workspace.update_in(cx, |workspace, window, cx| {
 9303            // Since panel_1 was visible on the left, it should now be visible now that it's been moved to the right.
 9304            // Since it was the only panel on the left, the left dock should now be closed.
 9305            assert!(!workspace.left_dock().read(cx).is_open());
 9306            assert!(workspace.left_dock().read(cx).visible_panel().is_none());
 9307            let right_dock = workspace.right_dock();
 9308            assert_eq!(
 9309                right_dock.read(cx).visible_panel().unwrap().panel_id(),
 9310                panel_1.panel_id()
 9311            );
 9312            assert_eq!(
 9313                right_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9314                px(1337.)
 9315            );
 9316
 9317            // Now we move panel_2 to the left
 9318            panel_2.set_position(DockPosition::Left, window, cx);
 9319        });
 9320
 9321        workspace.update(cx, |workspace, cx| {
 9322            // Since panel_2 was not visible on the right, we don't open the left dock.
 9323            assert!(!workspace.left_dock().read(cx).is_open());
 9324            // And the right dock is unaffected in its displaying of panel_1
 9325            assert!(workspace.right_dock().read(cx).is_open());
 9326            assert_eq!(
 9327                workspace
 9328                    .right_dock()
 9329                    .read(cx)
 9330                    .visible_panel()
 9331                    .unwrap()
 9332                    .panel_id(),
 9333                panel_1.panel_id(),
 9334            );
 9335        });
 9336
 9337        // Move panel_1 back to the left
 9338        panel_1.update_in(cx, |panel_1, window, cx| {
 9339            panel_1.set_position(DockPosition::Left, window, cx)
 9340        });
 9341
 9342        workspace.update_in(cx, |workspace, window, cx| {
 9343            // Since panel_1 was visible on the right, we open the left dock and make panel_1 active.
 9344            let left_dock = workspace.left_dock();
 9345            assert!(left_dock.read(cx).is_open());
 9346            assert_eq!(
 9347                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9348                panel_1.panel_id()
 9349            );
 9350            assert_eq!(
 9351                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9352                px(1337.)
 9353            );
 9354            // And the right dock should be closed as it no longer has any panels.
 9355            assert!(!workspace.right_dock().read(cx).is_open());
 9356
 9357            // Now we move panel_1 to the bottom
 9358            panel_1.set_position(DockPosition::Bottom, window, cx);
 9359        });
 9360
 9361        workspace.update_in(cx, |workspace, window, cx| {
 9362            // Since panel_1 was visible on the left, we close the left dock.
 9363            assert!(!workspace.left_dock().read(cx).is_open());
 9364            // The bottom dock is sized based on the panel's default size,
 9365            // since the panel orientation changed from vertical to horizontal.
 9366            let bottom_dock = workspace.bottom_dock();
 9367            assert_eq!(
 9368                bottom_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9369                panel_1.size(window, cx),
 9370            );
 9371            // Close bottom dock and move panel_1 back to the left.
 9372            bottom_dock.update(cx, |bottom_dock, cx| {
 9373                bottom_dock.set_open(false, window, cx)
 9374            });
 9375            panel_1.set_position(DockPosition::Left, window, cx);
 9376        });
 9377
 9378        // Emit activated event on panel 1
 9379        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Activate));
 9380
 9381        // Now the left dock is open and panel_1 is active and focused.
 9382        workspace.update_in(cx, |workspace, window, cx| {
 9383            let left_dock = workspace.left_dock();
 9384            assert!(left_dock.read(cx).is_open());
 9385            assert_eq!(
 9386                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9387                panel_1.panel_id(),
 9388            );
 9389            assert!(panel_1.focus_handle(cx).is_focused(window));
 9390        });
 9391
 9392        // Emit closed event on panel 2, which is not active
 9393        panel_2.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9394
 9395        // Wo don't close the left dock, because panel_2 wasn't the active panel
 9396        workspace.update(cx, |workspace, cx| {
 9397            let left_dock = workspace.left_dock();
 9398            assert!(left_dock.read(cx).is_open());
 9399            assert_eq!(
 9400                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9401                panel_1.panel_id(),
 9402            );
 9403        });
 9404
 9405        // Emitting a ZoomIn event shows the panel as zoomed.
 9406        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomIn));
 9407        workspace.read_with(cx, |workspace, _| {
 9408            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9409            assert_eq!(workspace.zoomed_position, Some(DockPosition::Left));
 9410        });
 9411
 9412        // Move panel to another dock while it is zoomed
 9413        panel_1.update_in(cx, |panel, window, cx| {
 9414            panel.set_position(DockPosition::Right, window, cx)
 9415        });
 9416        workspace.read_with(cx, |workspace, _| {
 9417            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9418
 9419            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9420        });
 9421
 9422        // This is a helper for getting a:
 9423        // - valid focus on an element,
 9424        // - that isn't a part of the panes and panels system of the Workspace,
 9425        // - and doesn't trigger the 'on_focus_lost' API.
 9426        let focus_other_view = {
 9427            let workspace = workspace.clone();
 9428            move |cx: &mut VisualTestContext| {
 9429                workspace.update_in(cx, |workspace, window, cx| {
 9430                    if let Some(_) = workspace.active_modal::<TestModal>(cx) {
 9431                        workspace.toggle_modal(window, cx, TestModal::new);
 9432                        workspace.toggle_modal(window, cx, TestModal::new);
 9433                    } else {
 9434                        workspace.toggle_modal(window, cx, TestModal::new);
 9435                    }
 9436                })
 9437            }
 9438        };
 9439
 9440        // If focus is transferred to another view that's not a panel or another pane, we still show
 9441        // the panel as zoomed.
 9442        focus_other_view(cx);
 9443        workspace.read_with(cx, |workspace, _| {
 9444            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9445            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9446        });
 9447
 9448        // If focus is transferred elsewhere in the workspace, the panel is no longer zoomed.
 9449        workspace.update_in(cx, |_workspace, window, cx| {
 9450            cx.focus_self(window);
 9451        });
 9452        workspace.read_with(cx, |workspace, _| {
 9453            assert_eq!(workspace.zoomed, None);
 9454            assert_eq!(workspace.zoomed_position, None);
 9455        });
 9456
 9457        // If focus is transferred again to another view that's not a panel or a pane, we won't
 9458        // show the panel as zoomed because it wasn't zoomed before.
 9459        focus_other_view(cx);
 9460        workspace.read_with(cx, |workspace, _| {
 9461            assert_eq!(workspace.zoomed, None);
 9462            assert_eq!(workspace.zoomed_position, None);
 9463        });
 9464
 9465        // When the panel is activated, it is zoomed again.
 9466        cx.dispatch_action(ToggleRightDock);
 9467        workspace.read_with(cx, |workspace, _| {
 9468            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9469            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9470        });
 9471
 9472        // Emitting a ZoomOut event unzooms the panel.
 9473        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomOut));
 9474        workspace.read_with(cx, |workspace, _| {
 9475            assert_eq!(workspace.zoomed, None);
 9476            assert_eq!(workspace.zoomed_position, None);
 9477        });
 9478
 9479        // Emit closed event on panel 1, which is active
 9480        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9481
 9482        // Now the left dock is closed, because panel_1 was the active panel
 9483        workspace.update(cx, |workspace, cx| {
 9484            let right_dock = workspace.right_dock();
 9485            assert!(!right_dock.read(cx).is_open());
 9486        });
 9487    }
 9488
 9489    #[gpui::test]
 9490    async fn test_no_save_prompt_when_multi_buffer_dirty_items_closed(cx: &mut TestAppContext) {
 9491        init_test(cx);
 9492
 9493        let fs = FakeFs::new(cx.background_executor.clone());
 9494        let project = Project::test(fs, [], cx).await;
 9495        let (workspace, cx) =
 9496            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9497        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9498
 9499        let dirty_regular_buffer = cx.new(|cx| {
 9500            TestItem::new(cx)
 9501                .with_dirty(true)
 9502                .with_label("1.txt")
 9503                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9504        });
 9505        let dirty_regular_buffer_2 = cx.new(|cx| {
 9506            TestItem::new(cx)
 9507                .with_dirty(true)
 9508                .with_label("2.txt")
 9509                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9510        });
 9511        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9512            TestItem::new(cx)
 9513                .with_dirty(true)
 9514                .with_singleton(false)
 9515                .with_label("Fake Project Search")
 9516                .with_project_items(&[
 9517                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9518                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9519                ])
 9520        });
 9521        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9522        workspace.update_in(cx, |workspace, window, cx| {
 9523            workspace.add_item(
 9524                pane.clone(),
 9525                Box::new(dirty_regular_buffer.clone()),
 9526                None,
 9527                false,
 9528                false,
 9529                window,
 9530                cx,
 9531            );
 9532            workspace.add_item(
 9533                pane.clone(),
 9534                Box::new(dirty_regular_buffer_2.clone()),
 9535                None,
 9536                false,
 9537                false,
 9538                window,
 9539                cx,
 9540            );
 9541            workspace.add_item(
 9542                pane.clone(),
 9543                Box::new(dirty_multi_buffer_with_both.clone()),
 9544                None,
 9545                false,
 9546                false,
 9547                window,
 9548                cx,
 9549            );
 9550        });
 9551
 9552        pane.update_in(cx, |pane, window, cx| {
 9553            pane.activate_item(2, true, true, window, cx);
 9554            assert_eq!(
 9555                pane.active_item().unwrap().item_id(),
 9556                multi_buffer_with_both_files_id,
 9557                "Should select the multi buffer in the pane"
 9558            );
 9559        });
 9560        let close_all_but_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9561            pane.close_other_items(
 9562                &CloseOtherItems {
 9563                    save_intent: Some(SaveIntent::Save),
 9564                    close_pinned: true,
 9565                },
 9566                None,
 9567                window,
 9568                cx,
 9569            )
 9570        });
 9571        cx.background_executor.run_until_parked();
 9572        assert!(!cx.has_pending_prompt());
 9573        close_all_but_multi_buffer_task
 9574            .await
 9575            .expect("Closing all buffers but the multi buffer failed");
 9576        pane.update(cx, |pane, cx| {
 9577            assert_eq!(dirty_regular_buffer.read(cx).save_count, 1);
 9578            assert_eq!(dirty_multi_buffer_with_both.read(cx).save_count, 0);
 9579            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 1);
 9580            assert_eq!(pane.items_len(), 1);
 9581            assert_eq!(
 9582                pane.active_item().unwrap().item_id(),
 9583                multi_buffer_with_both_files_id,
 9584                "Should have only the multi buffer left in the pane"
 9585            );
 9586            assert!(
 9587                dirty_multi_buffer_with_both.read(cx).is_dirty,
 9588                "The multi buffer containing the unsaved buffer should still be dirty"
 9589            );
 9590        });
 9591
 9592        dirty_regular_buffer.update(cx, |buffer, cx| {
 9593            buffer.project_items[0].update(cx, |pi, _| pi.is_dirty = true)
 9594        });
 9595
 9596        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9597            pane.close_active_item(
 9598                &CloseActiveItem {
 9599                    save_intent: Some(SaveIntent::Close),
 9600                    close_pinned: false,
 9601                },
 9602                window,
 9603                cx,
 9604            )
 9605        });
 9606        cx.background_executor.run_until_parked();
 9607        assert!(
 9608            cx.has_pending_prompt(),
 9609            "Dirty multi buffer should prompt a save dialog"
 9610        );
 9611        cx.simulate_prompt_answer("Save");
 9612        cx.background_executor.run_until_parked();
 9613        close_multi_buffer_task
 9614            .await
 9615            .expect("Closing the multi buffer failed");
 9616        pane.update(cx, |pane, cx| {
 9617            assert_eq!(
 9618                dirty_multi_buffer_with_both.read(cx).save_count,
 9619                1,
 9620                "Multi buffer item should get be saved"
 9621            );
 9622            // Test impl does not save inner items, so we do not assert them
 9623            assert_eq!(
 9624                pane.items_len(),
 9625                0,
 9626                "No more items should be left in the pane"
 9627            );
 9628            assert!(pane.active_item().is_none());
 9629        });
 9630    }
 9631
 9632    #[gpui::test]
 9633    async fn test_save_prompt_when_dirty_multi_buffer_closed_with_some_of_its_dirty_items_not_present_in_the_pane(
 9634        cx: &mut TestAppContext,
 9635    ) {
 9636        init_test(cx);
 9637
 9638        let fs = FakeFs::new(cx.background_executor.clone());
 9639        let project = Project::test(fs, [], cx).await;
 9640        let (workspace, cx) =
 9641            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9642        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9643
 9644        let dirty_regular_buffer = cx.new(|cx| {
 9645            TestItem::new(cx)
 9646                .with_dirty(true)
 9647                .with_label("1.txt")
 9648                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9649        });
 9650        let dirty_regular_buffer_2 = cx.new(|cx| {
 9651            TestItem::new(cx)
 9652                .with_dirty(true)
 9653                .with_label("2.txt")
 9654                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9655        });
 9656        let clear_regular_buffer = cx.new(|cx| {
 9657            TestItem::new(cx)
 9658                .with_label("3.txt")
 9659                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
 9660        });
 9661
 9662        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9663            TestItem::new(cx)
 9664                .with_dirty(true)
 9665                .with_singleton(false)
 9666                .with_label("Fake Project Search")
 9667                .with_project_items(&[
 9668                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9669                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9670                    clear_regular_buffer.read(cx).project_items[0].clone(),
 9671                ])
 9672        });
 9673        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9674        workspace.update_in(cx, |workspace, window, cx| {
 9675            workspace.add_item(
 9676                pane.clone(),
 9677                Box::new(dirty_regular_buffer.clone()),
 9678                None,
 9679                false,
 9680                false,
 9681                window,
 9682                cx,
 9683            );
 9684            workspace.add_item(
 9685                pane.clone(),
 9686                Box::new(dirty_multi_buffer_with_both.clone()),
 9687                None,
 9688                false,
 9689                false,
 9690                window,
 9691                cx,
 9692            );
 9693        });
 9694
 9695        pane.update_in(cx, |pane, window, cx| {
 9696            pane.activate_item(1, true, true, window, cx);
 9697            assert_eq!(
 9698                pane.active_item().unwrap().item_id(),
 9699                multi_buffer_with_both_files_id,
 9700                "Should select the multi buffer in the pane"
 9701            );
 9702        });
 9703        let _close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9704            pane.close_active_item(
 9705                &CloseActiveItem {
 9706                    save_intent: None,
 9707                    close_pinned: false,
 9708                },
 9709                window,
 9710                cx,
 9711            )
 9712        });
 9713        cx.background_executor.run_until_parked();
 9714        assert!(
 9715            cx.has_pending_prompt(),
 9716            "With one dirty item from the multi buffer not being in the pane, a save prompt should be shown"
 9717        );
 9718    }
 9719
 9720    /// Tests that when `close_on_file_delete` is enabled, files are automatically
 9721    /// closed when they are deleted from disk.
 9722    #[gpui::test]
 9723    async fn test_close_on_disk_deletion_enabled(cx: &mut TestAppContext) {
 9724        init_test(cx);
 9725
 9726        // Enable the close_on_disk_deletion setting
 9727        cx.update_global(|store: &mut SettingsStore, cx| {
 9728            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9729                settings.close_on_file_delete = Some(true);
 9730            });
 9731        });
 9732
 9733        let fs = FakeFs::new(cx.background_executor.clone());
 9734        let project = Project::test(fs, [], cx).await;
 9735        let (workspace, cx) =
 9736            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9737        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9738
 9739        // Create a test item that simulates a file
 9740        let item = cx.new(|cx| {
 9741            TestItem::new(cx)
 9742                .with_label("test.txt")
 9743                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9744        });
 9745
 9746        // Add item to workspace
 9747        workspace.update_in(cx, |workspace, window, cx| {
 9748            workspace.add_item(
 9749                pane.clone(),
 9750                Box::new(item.clone()),
 9751                None,
 9752                false,
 9753                false,
 9754                window,
 9755                cx,
 9756            );
 9757        });
 9758
 9759        // Verify the item is in the pane
 9760        pane.read_with(cx, |pane, _| {
 9761            assert_eq!(pane.items().count(), 1);
 9762        });
 9763
 9764        // Simulate file deletion by setting the item's deleted state
 9765        item.update(cx, |item, _| {
 9766            item.set_has_deleted_file(true);
 9767        });
 9768
 9769        // Emit UpdateTab event to trigger the close behavior
 9770        cx.run_until_parked();
 9771        item.update(cx, |_, cx| {
 9772            cx.emit(ItemEvent::UpdateTab);
 9773        });
 9774
 9775        // Allow the close operation to complete
 9776        cx.run_until_parked();
 9777
 9778        // Verify the item was automatically closed
 9779        pane.read_with(cx, |pane, _| {
 9780            assert_eq!(
 9781                pane.items().count(),
 9782                0,
 9783                "Item should be automatically closed when file is deleted"
 9784            );
 9785        });
 9786    }
 9787
 9788    /// Tests that when `close_on_file_delete` is disabled (default), files remain
 9789    /// open with a strikethrough when they are deleted from disk.
 9790    #[gpui::test]
 9791    async fn test_close_on_disk_deletion_disabled(cx: &mut TestAppContext) {
 9792        init_test(cx);
 9793
 9794        // Ensure close_on_disk_deletion is disabled (default)
 9795        cx.update_global(|store: &mut SettingsStore, cx| {
 9796            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9797                settings.close_on_file_delete = Some(false);
 9798            });
 9799        });
 9800
 9801        let fs = FakeFs::new(cx.background_executor.clone());
 9802        let project = Project::test(fs, [], cx).await;
 9803        let (workspace, cx) =
 9804            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9805        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9806
 9807        // Create a test item that simulates a file
 9808        let item = cx.new(|cx| {
 9809            TestItem::new(cx)
 9810                .with_label("test.txt")
 9811                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9812        });
 9813
 9814        // Add item to workspace
 9815        workspace.update_in(cx, |workspace, window, cx| {
 9816            workspace.add_item(
 9817                pane.clone(),
 9818                Box::new(item.clone()),
 9819                None,
 9820                false,
 9821                false,
 9822                window,
 9823                cx,
 9824            );
 9825        });
 9826
 9827        // Verify the item is in the pane
 9828        pane.read_with(cx, |pane, _| {
 9829            assert_eq!(pane.items().count(), 1);
 9830        });
 9831
 9832        // Simulate file deletion
 9833        item.update(cx, |item, _| {
 9834            item.set_has_deleted_file(true);
 9835        });
 9836
 9837        // Emit UpdateTab event
 9838        cx.run_until_parked();
 9839        item.update(cx, |_, cx| {
 9840            cx.emit(ItemEvent::UpdateTab);
 9841        });
 9842
 9843        // Allow any potential close operation to complete
 9844        cx.run_until_parked();
 9845
 9846        // Verify the item remains open (with strikethrough)
 9847        pane.read_with(cx, |pane, _| {
 9848            assert_eq!(
 9849                pane.items().count(),
 9850                1,
 9851                "Item should remain open when close_on_disk_deletion is disabled"
 9852            );
 9853        });
 9854
 9855        // Verify the item shows as deleted
 9856        item.read_with(cx, |item, _| {
 9857            assert!(
 9858                item.has_deleted_file,
 9859                "Item should be marked as having deleted file"
 9860            );
 9861        });
 9862    }
 9863
 9864    /// Tests that dirty files are not automatically closed when deleted from disk,
 9865    /// even when `close_on_file_delete` is enabled. This ensures users don't lose
 9866    /// unsaved changes without being prompted.
 9867    #[gpui::test]
 9868    async fn test_close_on_disk_deletion_with_dirty_file(cx: &mut TestAppContext) {
 9869        init_test(cx);
 9870
 9871        // Enable the close_on_file_delete setting
 9872        cx.update_global(|store: &mut SettingsStore, cx| {
 9873            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9874                settings.close_on_file_delete = Some(true);
 9875            });
 9876        });
 9877
 9878        let fs = FakeFs::new(cx.background_executor.clone());
 9879        let project = Project::test(fs, [], cx).await;
 9880        let (workspace, cx) =
 9881            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9882        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9883
 9884        // Create a dirty test item
 9885        let item = cx.new(|cx| {
 9886            TestItem::new(cx)
 9887                .with_dirty(true)
 9888                .with_label("test.txt")
 9889                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9890        });
 9891
 9892        // Add item to workspace
 9893        workspace.update_in(cx, |workspace, window, cx| {
 9894            workspace.add_item(
 9895                pane.clone(),
 9896                Box::new(item.clone()),
 9897                None,
 9898                false,
 9899                false,
 9900                window,
 9901                cx,
 9902            );
 9903        });
 9904
 9905        // Simulate file deletion
 9906        item.update(cx, |item, _| {
 9907            item.set_has_deleted_file(true);
 9908        });
 9909
 9910        // Emit UpdateTab event to trigger the close behavior
 9911        cx.run_until_parked();
 9912        item.update(cx, |_, cx| {
 9913            cx.emit(ItemEvent::UpdateTab);
 9914        });
 9915
 9916        // Allow any potential close operation to complete
 9917        cx.run_until_parked();
 9918
 9919        // Verify the item remains open (dirty files are not auto-closed)
 9920        pane.read_with(cx, |pane, _| {
 9921            assert_eq!(
 9922                pane.items().count(),
 9923                1,
 9924                "Dirty items should not be automatically closed even when file is deleted"
 9925            );
 9926        });
 9927
 9928        // Verify the item is marked as deleted and still dirty
 9929        item.read_with(cx, |item, _| {
 9930            assert!(
 9931                item.has_deleted_file,
 9932                "Item should be marked as having deleted file"
 9933            );
 9934            assert!(item.is_dirty, "Item should still be dirty");
 9935        });
 9936    }
 9937
 9938    /// Tests that navigation history is cleaned up when files are auto-closed
 9939    /// due to deletion from disk.
 9940    #[gpui::test]
 9941    async fn test_close_on_disk_deletion_cleans_navigation_history(cx: &mut TestAppContext) {
 9942        init_test(cx);
 9943
 9944        // Enable the close_on_file_delete setting
 9945        cx.update_global(|store: &mut SettingsStore, cx| {
 9946            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9947                settings.close_on_file_delete = Some(true);
 9948            });
 9949        });
 9950
 9951        let fs = FakeFs::new(cx.background_executor.clone());
 9952        let project = Project::test(fs, [], cx).await;
 9953        let (workspace, cx) =
 9954            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9955        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9956
 9957        // Create test items
 9958        let item1 = cx.new(|cx| {
 9959            TestItem::new(cx)
 9960                .with_label("test1.txt")
 9961                .with_project_items(&[TestProjectItem::new(1, "test1.txt", cx)])
 9962        });
 9963        let item1_id = item1.item_id();
 9964
 9965        let item2 = cx.new(|cx| {
 9966            TestItem::new(cx)
 9967                .with_label("test2.txt")
 9968                .with_project_items(&[TestProjectItem::new(2, "test2.txt", cx)])
 9969        });
 9970
 9971        // Add items to workspace
 9972        workspace.update_in(cx, |workspace, window, cx| {
 9973            workspace.add_item(
 9974                pane.clone(),
 9975                Box::new(item1.clone()),
 9976                None,
 9977                false,
 9978                false,
 9979                window,
 9980                cx,
 9981            );
 9982            workspace.add_item(
 9983                pane.clone(),
 9984                Box::new(item2.clone()),
 9985                None,
 9986                false,
 9987                false,
 9988                window,
 9989                cx,
 9990            );
 9991        });
 9992
 9993        // Activate item1 to ensure it gets navigation entries
 9994        pane.update_in(cx, |pane, window, cx| {
 9995            pane.activate_item(0, true, true, window, cx);
 9996        });
 9997
 9998        // Switch to item2 and back to create navigation history
 9999        pane.update_in(cx, |pane, window, cx| {
10000            pane.activate_item(1, true, true, window, cx);
10001        });
10002        cx.run_until_parked();
10003
10004        pane.update_in(cx, |pane, window, cx| {
10005            pane.activate_item(0, true, true, window, cx);
10006        });
10007        cx.run_until_parked();
10008
10009        // Simulate file deletion for item1
10010        item1.update(cx, |item, _| {
10011            item.set_has_deleted_file(true);
10012        });
10013
10014        // Emit UpdateTab event to trigger the close behavior
10015        item1.update(cx, |_, cx| {
10016            cx.emit(ItemEvent::UpdateTab);
10017        });
10018        cx.run_until_parked();
10019
10020        // Verify item1 was closed
10021        pane.read_with(cx, |pane, _| {
10022            assert_eq!(
10023                pane.items().count(),
10024                1,
10025                "Should have 1 item remaining after auto-close"
10026            );
10027        });
10028
10029        // Check navigation history after close
10030        let has_item = pane.read_with(cx, |pane, cx| {
10031            let mut has_item = false;
10032            pane.nav_history().for_each_entry(cx, |entry, _| {
10033                if entry.item.id() == item1_id {
10034                    has_item = true;
10035                }
10036            });
10037            has_item
10038        });
10039
10040        assert!(
10041            !has_item,
10042            "Navigation history should not contain closed item entries"
10043        );
10044    }
10045
10046    #[gpui::test]
10047    async fn test_no_save_prompt_when_dirty_multi_buffer_closed_with_all_of_its_dirty_items_present_in_the_pane(
10048        cx: &mut TestAppContext,
10049    ) {
10050        init_test(cx);
10051
10052        let fs = FakeFs::new(cx.background_executor.clone());
10053        let project = Project::test(fs, [], cx).await;
10054        let (workspace, cx) =
10055            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10056        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10057
10058        let dirty_regular_buffer = cx.new(|cx| {
10059            TestItem::new(cx)
10060                .with_dirty(true)
10061                .with_label("1.txt")
10062                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10063        });
10064        let dirty_regular_buffer_2 = cx.new(|cx| {
10065            TestItem::new(cx)
10066                .with_dirty(true)
10067                .with_label("2.txt")
10068                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10069        });
10070        let clear_regular_buffer = cx.new(|cx| {
10071            TestItem::new(cx)
10072                .with_label("3.txt")
10073                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
10074        });
10075
10076        let dirty_multi_buffer = cx.new(|cx| {
10077            TestItem::new(cx)
10078                .with_dirty(true)
10079                .with_singleton(false)
10080                .with_label("Fake Project Search")
10081                .with_project_items(&[
10082                    dirty_regular_buffer.read(cx).project_items[0].clone(),
10083                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
10084                    clear_regular_buffer.read(cx).project_items[0].clone(),
10085                ])
10086        });
10087        workspace.update_in(cx, |workspace, window, cx| {
10088            workspace.add_item(
10089                pane.clone(),
10090                Box::new(dirty_regular_buffer.clone()),
10091                None,
10092                false,
10093                false,
10094                window,
10095                cx,
10096            );
10097            workspace.add_item(
10098                pane.clone(),
10099                Box::new(dirty_regular_buffer_2.clone()),
10100                None,
10101                false,
10102                false,
10103                window,
10104                cx,
10105            );
10106            workspace.add_item(
10107                pane.clone(),
10108                Box::new(dirty_multi_buffer.clone()),
10109                None,
10110                false,
10111                false,
10112                window,
10113                cx,
10114            );
10115        });
10116
10117        pane.update_in(cx, |pane, window, cx| {
10118            pane.activate_item(2, true, true, window, cx);
10119            assert_eq!(
10120                pane.active_item().unwrap().item_id(),
10121                dirty_multi_buffer.item_id(),
10122                "Should select the multi buffer in the pane"
10123            );
10124        });
10125        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
10126            pane.close_active_item(
10127                &CloseActiveItem {
10128                    save_intent: None,
10129                    close_pinned: false,
10130                },
10131                window,
10132                cx,
10133            )
10134        });
10135        cx.background_executor.run_until_parked();
10136        assert!(
10137            !cx.has_pending_prompt(),
10138            "All dirty items from the multi buffer are in the pane still, no save prompts should be shown"
10139        );
10140        close_multi_buffer_task
10141            .await
10142            .expect("Closing multi buffer failed");
10143        pane.update(cx, |pane, cx| {
10144            assert_eq!(dirty_regular_buffer.read(cx).save_count, 0);
10145            assert_eq!(dirty_multi_buffer.read(cx).save_count, 0);
10146            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 0);
10147            assert_eq!(
10148                pane.items()
10149                    .map(|item| item.item_id())
10150                    .sorted()
10151                    .collect::<Vec<_>>(),
10152                vec![
10153                    dirty_regular_buffer.item_id(),
10154                    dirty_regular_buffer_2.item_id(),
10155                ],
10156                "Should have no multi buffer left in the pane"
10157            );
10158            assert!(dirty_regular_buffer.read(cx).is_dirty);
10159            assert!(dirty_regular_buffer_2.read(cx).is_dirty);
10160        });
10161    }
10162
10163    #[gpui::test]
10164    async fn test_move_focused_panel_to_next_position(cx: &mut gpui::TestAppContext) {
10165        init_test(cx);
10166        let fs = FakeFs::new(cx.executor());
10167        let project = Project::test(fs, [], cx).await;
10168        let (workspace, cx) =
10169            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10170
10171        // Add a new panel to the right dock, opening the dock and setting the
10172        // focus to the new panel.
10173        let panel = workspace.update_in(cx, |workspace, window, cx| {
10174            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
10175            workspace.add_panel(panel.clone(), window, cx);
10176
10177            workspace
10178                .right_dock()
10179                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
10180
10181            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10182
10183            panel
10184        });
10185
10186        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10187        // panel to the next valid position which, in this case, is the left
10188        // dock.
10189        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10190        workspace.update(cx, |workspace, cx| {
10191            assert!(workspace.left_dock().read(cx).is_open());
10192            assert_eq!(panel.read(cx).position, DockPosition::Left);
10193        });
10194
10195        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10196        // panel to the next valid position which, in this case, is the bottom
10197        // dock.
10198        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10199        workspace.update(cx, |workspace, cx| {
10200            assert!(workspace.bottom_dock().read(cx).is_open());
10201            assert_eq!(panel.read(cx).position, DockPosition::Bottom);
10202        });
10203
10204        // Dispatch the `MoveFocusedPanelToNextPosition` action again, this time
10205        // around moving the panel to its initial position, the right dock.
10206        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10207        workspace.update(cx, |workspace, cx| {
10208            assert!(workspace.right_dock().read(cx).is_open());
10209            assert_eq!(panel.read(cx).position, DockPosition::Right);
10210        });
10211
10212        // Remove focus from the panel, ensuring that, if the panel is not
10213        // focused, the `MoveFocusedPanelToNextPosition` action does not update
10214        // the panel's position, so the panel is still in the right dock.
10215        workspace.update_in(cx, |workspace, window, cx| {
10216            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10217        });
10218
10219        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10220        workspace.update(cx, |workspace, cx| {
10221            assert!(workspace.right_dock().read(cx).is_open());
10222            assert_eq!(panel.read(cx).position, DockPosition::Right);
10223        });
10224    }
10225
10226    #[gpui::test]
10227    async fn test_moving_items_create_panes(cx: &mut TestAppContext) {
10228        init_test(cx);
10229
10230        let fs = FakeFs::new(cx.executor());
10231        let project = Project::test(fs, [], cx).await;
10232        let (workspace, cx) =
10233            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10234
10235        let item_1 = cx.new(|cx| {
10236            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10237        });
10238        workspace.update_in(cx, |workspace, window, cx| {
10239            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10240            workspace.move_item_to_pane_in_direction(
10241                &MoveItemToPaneInDirection {
10242                    direction: SplitDirection::Right,
10243                    focus: true,
10244                    clone: false,
10245                },
10246                window,
10247                cx,
10248            );
10249            workspace.move_item_to_pane_at_index(
10250                &MoveItemToPane {
10251                    destination: 3,
10252                    focus: true,
10253                    clone: false,
10254                },
10255                window,
10256                cx,
10257            );
10258
10259            assert_eq!(workspace.panes.len(), 1, "No new panes were created");
10260            assert_eq!(
10261                pane_items_paths(&workspace.active_pane, cx),
10262                vec!["first.txt".to_string()],
10263                "Single item was not moved anywhere"
10264            );
10265        });
10266
10267        let item_2 = cx.new(|cx| {
10268            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "second.txt", cx)])
10269        });
10270        workspace.update_in(cx, |workspace, window, cx| {
10271            workspace.add_item_to_active_pane(Box::new(item_2), None, true, window, cx);
10272            assert_eq!(
10273                pane_items_paths(&workspace.panes[0], cx),
10274                vec!["first.txt".to_string(), "second.txt".to_string()],
10275            );
10276            workspace.move_item_to_pane_in_direction(
10277                &MoveItemToPaneInDirection {
10278                    direction: SplitDirection::Right,
10279                    focus: true,
10280                    clone: false,
10281                },
10282                window,
10283                cx,
10284            );
10285
10286            assert_eq!(workspace.panes.len(), 2, "A new pane should be created");
10287            assert_eq!(
10288                pane_items_paths(&workspace.panes[0], cx),
10289                vec!["first.txt".to_string()],
10290                "After moving, one item should be left in the original pane"
10291            );
10292            assert_eq!(
10293                pane_items_paths(&workspace.panes[1], cx),
10294                vec!["second.txt".to_string()],
10295                "New item should have been moved to the new pane"
10296            );
10297        });
10298
10299        let item_3 = cx.new(|cx| {
10300            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "third.txt", cx)])
10301        });
10302        workspace.update_in(cx, |workspace, window, cx| {
10303            let original_pane = workspace.panes[0].clone();
10304            workspace.set_active_pane(&original_pane, window, cx);
10305            workspace.add_item_to_active_pane(Box::new(item_3), None, true, window, cx);
10306            assert_eq!(workspace.panes.len(), 2, "No new panes were created");
10307            assert_eq!(
10308                pane_items_paths(&workspace.active_pane, cx),
10309                vec!["first.txt".to_string(), "third.txt".to_string()],
10310                "New pane should be ready to move one item out"
10311            );
10312
10313            workspace.move_item_to_pane_at_index(
10314                &MoveItemToPane {
10315                    destination: 3,
10316                    focus: true,
10317                    clone: false,
10318                },
10319                window,
10320                cx,
10321            );
10322            assert_eq!(workspace.panes.len(), 3, "A new pane should be created");
10323            assert_eq!(
10324                pane_items_paths(&workspace.active_pane, cx),
10325                vec!["first.txt".to_string()],
10326                "After moving, one item should be left in the original pane"
10327            );
10328            assert_eq!(
10329                pane_items_paths(&workspace.panes[1], cx),
10330                vec!["second.txt".to_string()],
10331                "Previously created pane should be unchanged"
10332            );
10333            assert_eq!(
10334                pane_items_paths(&workspace.panes[2], cx),
10335                vec!["third.txt".to_string()],
10336                "New item should have been moved to the new pane"
10337            );
10338        });
10339    }
10340
10341    #[gpui::test]
10342    async fn test_moving_items_can_clone_panes(cx: &mut TestAppContext) {
10343        init_test(cx);
10344
10345        let fs = FakeFs::new(cx.executor());
10346        let project = Project::test(fs, [], cx).await;
10347        let (workspace, cx) =
10348            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10349
10350        let item_1 = cx.new(|cx| {
10351            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10352        });
10353        workspace.update_in(cx, |workspace, window, cx| {
10354            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10355            workspace.move_item_to_pane_in_direction(
10356                &MoveItemToPaneInDirection {
10357                    direction: SplitDirection::Right,
10358                    focus: true,
10359                    clone: true,
10360                },
10361                window,
10362                cx,
10363            );
10364            workspace.move_item_to_pane_at_index(
10365                &MoveItemToPane {
10366                    destination: 3,
10367                    focus: true,
10368                    clone: true,
10369                },
10370                window,
10371                cx,
10372            );
10373
10374            assert_eq!(workspace.panes.len(), 3, "Two new panes were created");
10375            for pane in workspace.panes() {
10376                assert_eq!(
10377                    pane_items_paths(pane, cx),
10378                    vec!["first.txt".to_string()],
10379                    "Single item exists in all panes"
10380                );
10381            }
10382        });
10383
10384        // verify that the active pane has been updated after waiting for the
10385        // pane focus event to fire and resolve
10386        workspace.read_with(cx, |workspace, _app| {
10387            assert_eq!(
10388                workspace.active_pane(),
10389                &workspace.panes[2],
10390                "The third pane should be the active one: {:?}",
10391                workspace.panes
10392            );
10393        })
10394    }
10395
10396    mod register_project_item_tests {
10397
10398        use super::*;
10399
10400        // View
10401        struct TestPngItemView {
10402            focus_handle: FocusHandle,
10403        }
10404        // Model
10405        struct TestPngItem {}
10406
10407        impl project::ProjectItem for TestPngItem {
10408            fn try_open(
10409                _project: &Entity<Project>,
10410                path: &ProjectPath,
10411                cx: &mut App,
10412            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10413                if path.path.extension().unwrap() == "png" {
10414                    Some(cx.spawn(async move |cx| cx.new(|_| TestPngItem {})))
10415                } else {
10416                    None
10417                }
10418            }
10419
10420            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10421                None
10422            }
10423
10424            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10425                None
10426            }
10427
10428            fn is_dirty(&self) -> bool {
10429                false
10430            }
10431        }
10432
10433        impl Item for TestPngItemView {
10434            type Event = ();
10435            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10436                "".into()
10437            }
10438        }
10439        impl EventEmitter<()> for TestPngItemView {}
10440        impl Focusable for TestPngItemView {
10441            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10442                self.focus_handle.clone()
10443            }
10444        }
10445
10446        impl Render for TestPngItemView {
10447            fn render(
10448                &mut self,
10449                _window: &mut Window,
10450                _cx: &mut Context<Self>,
10451            ) -> impl IntoElement {
10452                Empty
10453            }
10454        }
10455
10456        impl ProjectItem for TestPngItemView {
10457            type Item = TestPngItem;
10458
10459            fn for_project_item(
10460                _project: Entity<Project>,
10461                _pane: Option<&Pane>,
10462                _item: Entity<Self::Item>,
10463                _: &mut Window,
10464                cx: &mut Context<Self>,
10465            ) -> Self
10466            where
10467                Self: Sized,
10468            {
10469                Self {
10470                    focus_handle: cx.focus_handle(),
10471                }
10472            }
10473        }
10474
10475        // View
10476        struct TestIpynbItemView {
10477            focus_handle: FocusHandle,
10478        }
10479        // Model
10480        struct TestIpynbItem {}
10481
10482        impl project::ProjectItem for TestIpynbItem {
10483            fn try_open(
10484                _project: &Entity<Project>,
10485                path: &ProjectPath,
10486                cx: &mut App,
10487            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10488                if path.path.extension().unwrap() == "ipynb" {
10489                    Some(cx.spawn(async move |cx| cx.new(|_| TestIpynbItem {})))
10490                } else {
10491                    None
10492                }
10493            }
10494
10495            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10496                None
10497            }
10498
10499            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10500                None
10501            }
10502
10503            fn is_dirty(&self) -> bool {
10504                false
10505            }
10506        }
10507
10508        impl Item for TestIpynbItemView {
10509            type Event = ();
10510            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10511                "".into()
10512            }
10513        }
10514        impl EventEmitter<()> for TestIpynbItemView {}
10515        impl Focusable for TestIpynbItemView {
10516            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10517                self.focus_handle.clone()
10518            }
10519        }
10520
10521        impl Render for TestIpynbItemView {
10522            fn render(
10523                &mut self,
10524                _window: &mut Window,
10525                _cx: &mut Context<Self>,
10526            ) -> impl IntoElement {
10527                Empty
10528            }
10529        }
10530
10531        impl ProjectItem for TestIpynbItemView {
10532            type Item = TestIpynbItem;
10533
10534            fn for_project_item(
10535                _project: Entity<Project>,
10536                _pane: Option<&Pane>,
10537                _item: Entity<Self::Item>,
10538                _: &mut Window,
10539                cx: &mut Context<Self>,
10540            ) -> Self
10541            where
10542                Self: Sized,
10543            {
10544                Self {
10545                    focus_handle: cx.focus_handle(),
10546                }
10547            }
10548        }
10549
10550        struct TestAlternatePngItemView {
10551            focus_handle: FocusHandle,
10552        }
10553
10554        impl Item for TestAlternatePngItemView {
10555            type Event = ();
10556            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10557                "".into()
10558            }
10559        }
10560
10561        impl EventEmitter<()> for TestAlternatePngItemView {}
10562        impl Focusable for TestAlternatePngItemView {
10563            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10564                self.focus_handle.clone()
10565            }
10566        }
10567
10568        impl Render for TestAlternatePngItemView {
10569            fn render(
10570                &mut self,
10571                _window: &mut Window,
10572                _cx: &mut Context<Self>,
10573            ) -> impl IntoElement {
10574                Empty
10575            }
10576        }
10577
10578        impl ProjectItem for TestAlternatePngItemView {
10579            type Item = TestPngItem;
10580
10581            fn for_project_item(
10582                _project: Entity<Project>,
10583                _pane: Option<&Pane>,
10584                _item: Entity<Self::Item>,
10585                _: &mut Window,
10586                cx: &mut Context<Self>,
10587            ) -> Self
10588            where
10589                Self: Sized,
10590            {
10591                Self {
10592                    focus_handle: cx.focus_handle(),
10593                }
10594            }
10595        }
10596
10597        #[gpui::test]
10598        async fn test_register_project_item(cx: &mut TestAppContext) {
10599            init_test(cx);
10600
10601            cx.update(|cx| {
10602                register_project_item::<TestPngItemView>(cx);
10603                register_project_item::<TestIpynbItemView>(cx);
10604            });
10605
10606            let fs = FakeFs::new(cx.executor());
10607            fs.insert_tree(
10608                "/root1",
10609                json!({
10610                    "one.png": "BINARYDATAHERE",
10611                    "two.ipynb": "{ totally a notebook }",
10612                    "three.txt": "editing text, sure why not?"
10613                }),
10614            )
10615            .await;
10616
10617            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10618            let (workspace, cx) =
10619                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10620
10621            let worktree_id = project.update(cx, |project, cx| {
10622                project.worktrees(cx).next().unwrap().read(cx).id()
10623            });
10624
10625            let handle = workspace
10626                .update_in(cx, |workspace, window, cx| {
10627                    let project_path = (worktree_id, "one.png");
10628                    workspace.open_path(project_path, None, true, window, cx)
10629                })
10630                .await
10631                .unwrap();
10632
10633            // Now we can check if the handle we got back errored or not
10634            assert_eq!(
10635                handle.to_any().entity_type(),
10636                TypeId::of::<TestPngItemView>()
10637            );
10638
10639            let handle = workspace
10640                .update_in(cx, |workspace, window, cx| {
10641                    let project_path = (worktree_id, "two.ipynb");
10642                    workspace.open_path(project_path, None, true, window, cx)
10643                })
10644                .await
10645                .unwrap();
10646
10647            assert_eq!(
10648                handle.to_any().entity_type(),
10649                TypeId::of::<TestIpynbItemView>()
10650            );
10651
10652            let handle = workspace
10653                .update_in(cx, |workspace, window, cx| {
10654                    let project_path = (worktree_id, "three.txt");
10655                    workspace.open_path(project_path, None, true, window, cx)
10656                })
10657                .await;
10658            assert!(handle.is_err());
10659        }
10660
10661        #[gpui::test]
10662        async fn test_register_project_item_two_enter_one_leaves(cx: &mut TestAppContext) {
10663            init_test(cx);
10664
10665            cx.update(|cx| {
10666                register_project_item::<TestPngItemView>(cx);
10667                register_project_item::<TestAlternatePngItemView>(cx);
10668            });
10669
10670            let fs = FakeFs::new(cx.executor());
10671            fs.insert_tree(
10672                "/root1",
10673                json!({
10674                    "one.png": "BINARYDATAHERE",
10675                    "two.ipynb": "{ totally a notebook }",
10676                    "three.txt": "editing text, sure why not?"
10677                }),
10678            )
10679            .await;
10680            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10681            let (workspace, cx) =
10682                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10683            let worktree_id = project.update(cx, |project, cx| {
10684                project.worktrees(cx).next().unwrap().read(cx).id()
10685            });
10686
10687            let handle = workspace
10688                .update_in(cx, |workspace, window, cx| {
10689                    let project_path = (worktree_id, "one.png");
10690                    workspace.open_path(project_path, None, true, window, cx)
10691                })
10692                .await
10693                .unwrap();
10694
10695            // This _must_ be the second item registered
10696            assert_eq!(
10697                handle.to_any().entity_type(),
10698                TypeId::of::<TestAlternatePngItemView>()
10699            );
10700
10701            let handle = workspace
10702                .update_in(cx, |workspace, window, cx| {
10703                    let project_path = (worktree_id, "three.txt");
10704                    workspace.open_path(project_path, None, true, window, cx)
10705                })
10706                .await;
10707            assert!(handle.is_err());
10708        }
10709    }
10710
10711    fn pane_items_paths(pane: &Entity<Pane>, cx: &App) -> Vec<String> {
10712        pane.read(cx)
10713            .items()
10714            .flat_map(|item| {
10715                item.project_paths(cx)
10716                    .into_iter()
10717                    .map(|path| path.path.to_string_lossy().to_string())
10718            })
10719            .collect()
10720    }
10721
10722    pub fn init_test(cx: &mut TestAppContext) {
10723        cx.update(|cx| {
10724            let settings_store = SettingsStore::test(cx);
10725            cx.set_global(settings_store);
10726            theme::init(theme::LoadThemes::JustBase, cx);
10727            language::init(cx);
10728            crate::init_settings(cx);
10729            Project::init_settings(cx);
10730        });
10731    }
10732
10733    fn dirty_project_item(id: u64, path: &str, cx: &mut App) -> Entity<TestProjectItem> {
10734        let item = TestProjectItem::new(id, path, cx);
10735        item.update(cx, |item, _| {
10736            item.is_dirty = true;
10737        });
10738        item
10739    }
10740}