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