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 toast_layer::{ToastAction, ToastLayer, ToastView};
   19
   20use anyhow::{Context as _, Result, anyhow};
   21use call::{ActiveCall, call_settings::CallSettings};
   22use client::{
   23    ChannelId, Client, ErrorExt, Status, TypedEnvelope, UserStore,
   24    proto::{self, ErrorCode, PanelId, PeerId},
   25};
   26use collections::{HashMap, HashSet, hash_map};
   27pub use dock::Panel;
   28use dock::{Dock, DockPosition, PanelButtons, PanelHandle, RESIZE_HANDLE_SIZE};
   29use futures::{
   30    Future, FutureExt, StreamExt,
   31    channel::{
   32        mpsc::{self, UnboundedReceiver, UnboundedSender},
   33        oneshot,
   34    },
   35    future::{Shared, try_join_all},
   36};
   37use gpui::{
   38    Action, AnyEntity, AnyView, AnyWeakView, App, AsyncApp, AsyncWindowContext, Bounds, Context,
   39    CursorStyle, Decorations, DragMoveEvent, Entity, EntityId, EventEmitter, FocusHandle,
   40    Focusable, Global, HitboxBehavior, Hsla, KeyContext, Keystroke, ManagedView, MouseButton,
   41    PathPromptOptions, Point, PromptLevel, Render, ResizeEdge, Size, Stateful, Subscription, Task,
   42    Tiling, WeakEntity, WindowBounds, WindowHandle, WindowId, WindowOptions, actions, canvas,
   43    point, relative, size, transparent_black,
   44};
   45pub use history_manager::*;
   46pub use item::{
   47    FollowableItem, FollowableItemHandle, Item, ItemHandle, ItemSettings, PreviewTabsSettings,
   48    ProjectItem, SerializableItem, SerializableItemHandle, WeakItemHandle,
   49};
   50use itertools::Itertools;
   51use language::{Buffer, LanguageRegistry, Rope};
   52pub use modal_layer::*;
   53use node_runtime::NodeRuntime;
   54use notifications::{
   55    DetachAndPromptErr, Notifications, dismiss_app_notification,
   56    simple_message_notification::MessageNotification,
   57};
   58pub use pane::*;
   59pub use pane_group::*;
   60use persistence::{
   61    DB, SerializedWindowBounds,
   62    model::{SerializedSshProject, SerializedWorkspace},
   63};
   64pub use persistence::{
   65    DB as WORKSPACE_DB, WorkspaceDb, delete_unloaded_items,
   66    model::{ItemId, LocalPaths, SerializedWorkspaceLocation},
   67};
   68use postage::stream::Stream;
   69use project::{
   70    DirectoryLister, Project, ProjectEntryId, ProjectPath, ResolvedPath, Worktree, WorktreeId,
   71    debugger::{breakpoint_store::BreakpointStoreEvent, session::ThreadStatus},
   72};
   73use remote::{SshClientDelegate, SshConnectionOptions, ssh_session::ConnectionIdentifier};
   74use schemars::JsonSchema;
   75use serde::Deserialize;
   76use session::AppSession;
   77use settings::Settings;
   78use shared_screen::SharedScreen;
   79use sqlez::{
   80    bindable::{Bind, Column, StaticColumnCount},
   81    statement::Statement,
   82};
   83use status_bar::StatusBar;
   84pub use status_bar::StatusItemView;
   85use std::{
   86    any::TypeId,
   87    borrow::Cow,
   88    cell::RefCell,
   89    cmp,
   90    collections::{VecDeque, hash_map::DefaultHasher},
   91    env,
   92    hash::{Hash, Hasher},
   93    path::{Path, PathBuf},
   94    process::ExitStatus,
   95    rc::Rc,
   96    sync::{Arc, LazyLock, Weak, atomic::AtomicUsize},
   97    time::Duration,
   98};
   99use task::{DebugScenario, SpawnInTerminal, TaskContext};
  100use theme::{ActiveTheme, SystemAppearance, ThemeSettings};
  101pub use toolbar::{Toolbar, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView};
  102pub use ui;
  103use ui::{Window, prelude::*};
  104use util::{ResultExt, TryFutureExt, paths::SanitizedPath, serde::default_true};
  105use uuid::Uuid;
  106pub use workspace_settings::{
  107    AutosaveSetting, BottomDockLayout, RestoreOnStartupBehavior, TabBarSettings, WorkspaceSettings,
  108};
  109use zed_actions::{Spawn, feedback::FileBugReport};
  110
  111use crate::notifications::NotificationId;
  112use crate::persistence::{
  113    SerializedAxis,
  114    model::{DockData, DockStructure, SerializedItem, SerializedPane, SerializedPaneGroup},
  115};
  116
  117pub const SERIALIZATION_THROTTLE_TIME: Duration = Duration::from_millis(200);
  118
  119static ZED_WINDOW_SIZE: LazyLock<Option<Size<Pixels>>> = LazyLock::new(|| {
  120    env::var("ZED_WINDOW_SIZE")
  121        .ok()
  122        .as_deref()
  123        .and_then(parse_pixel_size_env_var)
  124});
  125
  126static ZED_WINDOW_POSITION: LazyLock<Option<Point<Pixels>>> = LazyLock::new(|| {
  127    env::var("ZED_WINDOW_POSITION")
  128        .ok()
  129        .as_deref()
  130        .and_then(parse_pixel_position_env_var)
  131});
  132
  133pub trait TerminalProvider {
  134    fn spawn(
  135        &self,
  136        task: SpawnInTerminal,
  137        window: &mut Window,
  138        cx: &mut App,
  139    ) -> Task<Option<Result<ExitStatus>>>;
  140}
  141
  142pub trait DebuggerProvider {
  143    // `active_buffer` is used to resolve build task's name against language-specific tasks.
  144    fn start_session(
  145        &self,
  146        definition: DebugScenario,
  147        task_context: TaskContext,
  148        active_buffer: Option<Entity<Buffer>>,
  149        worktree_id: Option<WorktreeId>,
  150        window: &mut Window,
  151        cx: &mut App,
  152    );
  153
  154    fn spawn_task_or_modal(
  155        &self,
  156        workspace: &mut Workspace,
  157        action: &Spawn,
  158        window: &mut Window,
  159        cx: &mut Context<Workspace>,
  160    );
  161
  162    fn task_scheduled(&self, cx: &mut App);
  163    fn debug_scenario_scheduled(&self, cx: &mut App);
  164    fn debug_scenario_scheduled_last(&self, cx: &App) -> bool;
  165
  166    fn active_thread_state(&self, cx: &App) -> Option<ThreadStatus>;
  167}
  168
  169actions!(
  170    workspace,
  171    [
  172        /// Activates the next pane in the workspace.
  173        ActivateNextPane,
  174        /// Activates the previous pane in the workspace.
  175        ActivatePreviousPane,
  176        /// Switches to the next window.
  177        ActivateNextWindow,
  178        /// Switches to the previous window.
  179        ActivatePreviousWindow,
  180        /// Adds a folder to the current project.
  181        AddFolderToProject,
  182        /// Clears all notifications.
  183        ClearAllNotifications,
  184        /// Closes the active dock.
  185        CloseActiveDock,
  186        /// Closes all docks.
  187        CloseAllDocks,
  188        /// Closes the current window.
  189        CloseWindow,
  190        /// Opens the feedback dialog.
  191        Feedback,
  192        /// Follows the next collaborator in the session.
  193        FollowNextCollaborator,
  194        /// Moves the focused panel to the next position.
  195        MoveFocusedPanelToNextPosition,
  196        /// Opens a new terminal in the center.
  197        NewCenterTerminal,
  198        /// Creates a new file.
  199        NewFile,
  200        /// Creates a new file in a vertical split.
  201        NewFileSplitVertical,
  202        /// Creates a new file in a horizontal split.
  203        NewFileSplitHorizontal,
  204        /// Opens a new search.
  205        NewSearch,
  206        /// Opens a new terminal.
  207        NewTerminal,
  208        /// Opens a new window.
  209        NewWindow,
  210        /// Opens a file or directory.
  211        Open,
  212        /// Opens multiple files.
  213        OpenFiles,
  214        /// Opens the current location in terminal.
  215        OpenInTerminal,
  216        /// Opens the component preview.
  217        OpenComponentPreview,
  218        /// Reloads the active item.
  219        ReloadActiveItem,
  220        /// Resets the active dock to its default size.
  221        ResetActiveDockSize,
  222        /// Resets all open docks to their default sizes.
  223        ResetOpenDocksSize,
  224        /// Saves the current file with a new name.
  225        SaveAs,
  226        /// Saves without formatting.
  227        SaveWithoutFormat,
  228        /// Shuts down all debug adapters.
  229        ShutdownDebugAdapters,
  230        /// Suppresses the current notification.
  231        SuppressNotification,
  232        /// Toggles the bottom dock.
  233        ToggleBottomDock,
  234        /// Toggles centered layout mode.
  235        ToggleCenteredLayout,
  236        /// Toggles the left dock.
  237        ToggleLeftDock,
  238        /// Toggles the right dock.
  239        ToggleRightDock,
  240        /// Toggles zoom on the active pane.
  241        ToggleZoom,
  242        /// Stops following a collaborator.
  243        Unfollow,
  244        /// Shows the welcome screen.
  245        Welcome,
  246        /// Restores the banner.
  247        RestoreBanner,
  248        /// Toggles expansion of the selected item.
  249        ToggleExpandItem,
  250    ]
  251);
  252
  253#[derive(Clone, PartialEq)]
  254pub struct OpenPaths {
  255    pub paths: Vec<PathBuf>,
  256}
  257
  258/// Activates a specific pane by its index.
  259#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  260#[action(namespace = workspace)]
  261pub struct ActivatePane(pub usize);
  262
  263/// Moves an item to a specific pane by index.
  264#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  265#[action(namespace = workspace)]
  266#[serde(deny_unknown_fields)]
  267pub struct MoveItemToPane {
  268    #[serde(default = "default_1")]
  269    pub destination: usize,
  270    #[serde(default = "default_true")]
  271    pub focus: bool,
  272    #[serde(default)]
  273    pub clone: bool,
  274}
  275
  276fn default_1() -> usize {
  277    1
  278}
  279
  280/// Moves an item to a pane in the specified direction.
  281#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  282#[action(namespace = workspace)]
  283#[serde(deny_unknown_fields)]
  284pub struct MoveItemToPaneInDirection {
  285    #[serde(default = "default_right")]
  286    pub direction: SplitDirection,
  287    #[serde(default = "default_true")]
  288    pub focus: bool,
  289    #[serde(default)]
  290    pub clone: bool,
  291}
  292
  293fn default_right() -> SplitDirection {
  294    SplitDirection::Right
  295}
  296
  297/// Saves all open files in the workspace.
  298#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  299#[action(namespace = workspace)]
  300#[serde(deny_unknown_fields)]
  301pub struct SaveAll {
  302    #[serde(default)]
  303    pub save_intent: Option<SaveIntent>,
  304}
  305
  306/// Saves the current file with the specified options.
  307#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  308#[action(namespace = workspace)]
  309#[serde(deny_unknown_fields)]
  310pub struct Save {
  311    #[serde(default)]
  312    pub save_intent: Option<SaveIntent>,
  313}
  314
  315/// Closes all items and panes in the workspace.
  316#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  317#[action(namespace = workspace)]
  318#[serde(deny_unknown_fields)]
  319pub struct CloseAllItemsAndPanes {
  320    #[serde(default)]
  321    pub save_intent: Option<SaveIntent>,
  322}
  323
  324/// Closes all inactive tabs and panes in the workspace.
  325#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  326#[action(namespace = workspace)]
  327#[serde(deny_unknown_fields)]
  328pub struct CloseInactiveTabsAndPanes {
  329    #[serde(default)]
  330    pub save_intent: Option<SaveIntent>,
  331}
  332
  333/// Sends a sequence of keystrokes to the active element.
  334#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  335#[action(namespace = workspace)]
  336pub struct SendKeystrokes(pub String);
  337
  338/// Reloads the active item or workspace.
  339#[derive(Clone, Deserialize, PartialEq, Default, JsonSchema, Action)]
  340#[action(namespace = workspace)]
  341#[serde(deny_unknown_fields)]
  342pub struct Reload {
  343    pub binary_path: Option<PathBuf>,
  344}
  345
  346actions!(
  347    project_symbols,
  348    [
  349        /// Toggles the project symbols search.
  350        #[action(name = "Toggle")]
  351        ToggleProjectSymbols
  352    ]
  353);
  354
  355/// Toggles the file finder interface.
  356#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  357#[action(namespace = file_finder, name = "Toggle")]
  358#[serde(deny_unknown_fields)]
  359pub struct ToggleFileFinder {
  360    #[serde(default)]
  361    pub separate_history: bool,
  362}
  363
  364/// Increases size of a currently focused dock by a given amount of pixels.
  365#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  366#[action(namespace = workspace)]
  367#[serde(deny_unknown_fields)]
  368pub struct IncreaseActiveDockSize {
  369    /// For 0px parameter, uses UI font size value.
  370    #[serde(default)]
  371    pub px: u32,
  372}
  373
  374/// Decreases size of a currently focused dock by a given amount of pixels.
  375#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  376#[action(namespace = workspace)]
  377#[serde(deny_unknown_fields)]
  378pub struct DecreaseActiveDockSize {
  379    /// For 0px parameter, uses UI font size value.
  380    #[serde(default)]
  381    pub px: u32,
  382}
  383
  384/// Increases size of all currently visible docks uniformly, by a given amount of pixels.
  385#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  386#[action(namespace = workspace)]
  387#[serde(deny_unknown_fields)]
  388pub struct IncreaseOpenDocksSize {
  389    /// For 0px parameter, uses UI font size value.
  390    #[serde(default)]
  391    pub px: u32,
  392}
  393
  394/// Decreases size of all currently visible docks uniformly, by a given amount of pixels.
  395#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  396#[action(namespace = workspace)]
  397#[serde(deny_unknown_fields)]
  398pub struct DecreaseOpenDocksSize {
  399    /// For 0px parameter, uses UI font size value.
  400    #[serde(default)]
  401    pub px: u32,
  402}
  403
  404actions!(
  405    workspace,
  406    [
  407        /// Activates the pane to the left.
  408        ActivatePaneLeft,
  409        /// Activates the pane to the right.
  410        ActivatePaneRight,
  411        /// Activates the pane above.
  412        ActivatePaneUp,
  413        /// Activates the pane below.
  414        ActivatePaneDown,
  415        /// Swaps the current pane with the one to the left.
  416        SwapPaneLeft,
  417        /// Swaps the current pane with the one to the right.
  418        SwapPaneRight,
  419        /// Swaps the current pane with the one above.
  420        SwapPaneUp,
  421        /// Swaps the current pane with the one below.
  422        SwapPaneDown,
  423    ]
  424);
  425
  426#[derive(PartialEq, Eq, Debug)]
  427pub enum CloseIntent {
  428    /// Quit the program entirely.
  429    Quit,
  430    /// Close a window.
  431    CloseWindow,
  432    /// Replace the workspace in an existing window.
  433    ReplaceWindow,
  434}
  435
  436#[derive(Clone)]
  437pub struct Toast {
  438    id: NotificationId,
  439    msg: Cow<'static, str>,
  440    autohide: bool,
  441    on_click: Option<(Cow<'static, str>, Arc<dyn Fn(&mut Window, &mut App)>)>,
  442}
  443
  444impl Toast {
  445    pub fn new<I: Into<Cow<'static, str>>>(id: NotificationId, msg: I) -> Self {
  446        Toast {
  447            id,
  448            msg: msg.into(),
  449            on_click: None,
  450            autohide: false,
  451        }
  452    }
  453
  454    pub fn on_click<F, M>(mut self, message: M, on_click: F) -> Self
  455    where
  456        M: Into<Cow<'static, str>>,
  457        F: Fn(&mut Window, &mut App) + 'static,
  458    {
  459        self.on_click = Some((message.into(), Arc::new(on_click)));
  460        self
  461    }
  462
  463    pub fn autohide(mut self) -> Self {
  464        self.autohide = true;
  465        self
  466    }
  467}
  468
  469impl PartialEq for Toast {
  470    fn eq(&self, other: &Self) -> bool {
  471        self.id == other.id
  472            && self.msg == other.msg
  473            && self.on_click.is_some() == other.on_click.is_some()
  474    }
  475}
  476
  477/// Opens a new terminal with the specified working directory.
  478#[derive(Debug, Default, Clone, Deserialize, PartialEq, JsonSchema, Action)]
  479#[action(namespace = workspace)]
  480#[serde(deny_unknown_fields)]
  481pub struct OpenTerminal {
  482    pub working_directory: PathBuf,
  483}
  484
  485#[derive(Clone, Copy, Debug, Default, Hash, PartialEq, Eq, PartialOrd, Ord)]
  486pub struct WorkspaceId(i64);
  487
  488impl StaticColumnCount for WorkspaceId {}
  489impl Bind for WorkspaceId {
  490    fn bind(&self, statement: &Statement, start_index: i32) -> Result<i32> {
  491        self.0.bind(statement, start_index)
  492    }
  493}
  494impl Column for WorkspaceId {
  495    fn column(statement: &mut Statement, start_index: i32) -> Result<(Self, i32)> {
  496        i64::column(statement, start_index)
  497            .map(|(i, next_index)| (Self(i), next_index))
  498            .with_context(|| format!("Failed to read WorkspaceId at index {start_index}"))
  499    }
  500}
  501impl From<WorkspaceId> for i64 {
  502    fn from(val: WorkspaceId) -> Self {
  503        val.0
  504    }
  505}
  506
  507pub fn init_settings(cx: &mut App) {
  508    WorkspaceSettings::register(cx);
  509    ItemSettings::register(cx);
  510    PreviewTabsSettings::register(cx);
  511    TabBarSettings::register(cx);
  512}
  513
  514fn prompt_and_open_paths(app_state: Arc<AppState>, options: PathPromptOptions, cx: &mut App) {
  515    let paths = cx.prompt_for_paths(options);
  516    cx.spawn(
  517        async move |cx| match paths.await.anyhow().and_then(|res| res) {
  518            Ok(Some(paths)) => {
  519                cx.update(|cx| {
  520                    open_paths(&paths, app_state, OpenOptions::default(), cx).detach_and_log_err(cx)
  521                })
  522                .ok();
  523            }
  524            Ok(None) => {}
  525            Err(err) => {
  526                util::log_err(&err);
  527                cx.update(|cx| {
  528                    if let Some(workspace_window) = cx
  529                        .active_window()
  530                        .and_then(|window| window.downcast::<Workspace>())
  531                    {
  532                        workspace_window
  533                            .update(cx, |workspace, _, cx| {
  534                                workspace.show_portal_error(err.to_string(), cx);
  535                            })
  536                            .ok();
  537                    }
  538                })
  539                .ok();
  540            }
  541        },
  542    )
  543    .detach();
  544}
  545
  546pub fn init(app_state: Arc<AppState>, cx: &mut App) {
  547    init_settings(cx);
  548    component::init();
  549    theme_preview::init(cx);
  550    toast_layer::init(cx);
  551    history_manager::init(cx);
  552
  553    cx.on_action(Workspace::close_global);
  554    cx.on_action(reload);
  555
  556    cx.on_action({
  557        let app_state = Arc::downgrade(&app_state);
  558        move |_: &Open, cx: &mut App| {
  559            if let Some(app_state) = app_state.upgrade() {
  560                prompt_and_open_paths(
  561                    app_state,
  562                    PathPromptOptions {
  563                        files: true,
  564                        directories: true,
  565                        multiple: true,
  566                    },
  567                    cx,
  568                );
  569            }
  570        }
  571    });
  572    cx.on_action({
  573        let app_state = Arc::downgrade(&app_state);
  574        move |_: &OpenFiles, cx: &mut App| {
  575            let directories = cx.can_select_mixed_files_and_dirs();
  576            if let Some(app_state) = app_state.upgrade() {
  577                prompt_and_open_paths(
  578                    app_state,
  579                    PathPromptOptions {
  580                        files: true,
  581                        directories,
  582                        multiple: true,
  583                    },
  584                    cx,
  585                );
  586            }
  587        }
  588    });
  589}
  590
  591type BuildProjectItemFn =
  592    fn(AnyEntity, Entity<Project>, Option<&Pane>, &mut Window, &mut App) -> Box<dyn ItemHandle>;
  593
  594type BuildProjectItemForPathFn =
  595    fn(
  596        &Entity<Project>,
  597        &ProjectPath,
  598        &mut Window,
  599        &mut App,
  600    ) -> Option<Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>>>;
  601
  602#[derive(Clone, Default)]
  603struct ProjectItemRegistry {
  604    build_project_item_fns_by_type: HashMap<TypeId, BuildProjectItemFn>,
  605    build_project_item_for_path_fns: Vec<BuildProjectItemForPathFn>,
  606}
  607
  608impl ProjectItemRegistry {
  609    fn register<T: ProjectItem>(&mut self) {
  610        self.build_project_item_fns_by_type.insert(
  611            TypeId::of::<T::Item>(),
  612            |item, project, pane, window, cx| {
  613                let item = item.downcast().unwrap();
  614                Box::new(cx.new(|cx| T::for_project_item(project, pane, item, window, cx)))
  615                    as Box<dyn ItemHandle>
  616            },
  617        );
  618        self.build_project_item_for_path_fns
  619            .push(|project, project_path, window, cx| {
  620                let project_item =
  621                    <T::Item as project::ProjectItem>::try_open(project, project_path, cx)?;
  622                let project = project.clone();
  623                Some(window.spawn(cx, async move |cx| {
  624                    let project_item = project_item.await?;
  625                    let project_entry_id: Option<ProjectEntryId> =
  626                        project_item.read_with(cx, project::ProjectItem::entry_id)?;
  627                    let build_workspace_item = Box::new(
  628                        |pane: &mut Pane, window: &mut Window, cx: &mut Context<Pane>| {
  629                            Box::new(cx.new(|cx| {
  630                                T::for_project_item(project, Some(pane), project_item, window, cx)
  631                            })) as Box<dyn ItemHandle>
  632                        },
  633                    ) as Box<_>;
  634                    Ok((project_entry_id, build_workspace_item))
  635                }))
  636            });
  637    }
  638
  639    fn open_path(
  640        &self,
  641        project: &Entity<Project>,
  642        path: &ProjectPath,
  643        window: &mut Window,
  644        cx: &mut App,
  645    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
  646        let Some(open_project_item) = self
  647            .build_project_item_for_path_fns
  648            .iter()
  649            .rev()
  650            .find_map(|open_project_item| open_project_item(&project, &path, window, cx))
  651        else {
  652            return Task::ready(Err(anyhow!("cannot open file {:?}", path.path)));
  653        };
  654        open_project_item
  655    }
  656
  657    fn build_item<T: project::ProjectItem>(
  658        &self,
  659        item: Entity<T>,
  660        project: Entity<Project>,
  661        pane: Option<&Pane>,
  662        window: &mut Window,
  663        cx: &mut App,
  664    ) -> Option<Box<dyn ItemHandle>> {
  665        let build = self
  666            .build_project_item_fns_by_type
  667            .get(&TypeId::of::<T>())?;
  668        Some(build(item.into_any(), project, pane, window, cx))
  669    }
  670}
  671
  672type WorkspaceItemBuilder =
  673    Box<dyn FnOnce(&mut Pane, &mut Window, &mut Context<Pane>) -> Box<dyn ItemHandle>>;
  674
  675impl Global for ProjectItemRegistry {}
  676
  677/// Registers a [ProjectItem] for the app. When opening a file, all the registered
  678/// items will get a chance to open the file, starting from the project item that
  679/// was added last.
  680pub fn register_project_item<I: ProjectItem>(cx: &mut App) {
  681    cx.default_global::<ProjectItemRegistry>().register::<I>();
  682}
  683
  684#[derive(Default)]
  685pub struct FollowableViewRegistry(HashMap<TypeId, FollowableViewDescriptor>);
  686
  687struct FollowableViewDescriptor {
  688    from_state_proto: fn(
  689        Entity<Workspace>,
  690        ViewId,
  691        &mut Option<proto::view::Variant>,
  692        &mut Window,
  693        &mut App,
  694    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>>,
  695    to_followable_view: fn(&AnyView) -> Box<dyn FollowableItemHandle>,
  696}
  697
  698impl Global for FollowableViewRegistry {}
  699
  700impl FollowableViewRegistry {
  701    pub fn register<I: FollowableItem>(cx: &mut App) {
  702        cx.default_global::<Self>().0.insert(
  703            TypeId::of::<I>(),
  704            FollowableViewDescriptor {
  705                from_state_proto: |workspace, id, state, window, cx| {
  706                    I::from_state_proto(workspace, id, state, window, cx).map(|task| {
  707                        cx.foreground_executor()
  708                            .spawn(async move { Ok(Box::new(task.await?) as Box<_>) })
  709                    })
  710                },
  711                to_followable_view: |view| Box::new(view.clone().downcast::<I>().unwrap()),
  712            },
  713        );
  714    }
  715
  716    pub fn from_state_proto(
  717        workspace: Entity<Workspace>,
  718        view_id: ViewId,
  719        mut state: Option<proto::view::Variant>,
  720        window: &mut Window,
  721        cx: &mut App,
  722    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>> {
  723        cx.update_default_global(|this: &mut Self, cx| {
  724            this.0.values().find_map(|descriptor| {
  725                (descriptor.from_state_proto)(workspace.clone(), view_id, &mut state, window, cx)
  726            })
  727        })
  728    }
  729
  730    pub fn to_followable_view(
  731        view: impl Into<AnyView>,
  732        cx: &App,
  733    ) -> Option<Box<dyn FollowableItemHandle>> {
  734        let this = cx.try_global::<Self>()?;
  735        let view = view.into();
  736        let descriptor = this.0.get(&view.entity_type())?;
  737        Some((descriptor.to_followable_view)(&view))
  738    }
  739}
  740
  741#[derive(Copy, Clone)]
  742struct SerializableItemDescriptor {
  743    deserialize: fn(
  744        Entity<Project>,
  745        WeakEntity<Workspace>,
  746        WorkspaceId,
  747        ItemId,
  748        &mut Window,
  749        &mut Context<Pane>,
  750    ) -> Task<Result<Box<dyn ItemHandle>>>,
  751    cleanup: fn(WorkspaceId, Vec<ItemId>, &mut Window, &mut App) -> Task<Result<()>>,
  752    view_to_serializable_item: fn(AnyView) -> Box<dyn SerializableItemHandle>,
  753}
  754
  755#[derive(Default)]
  756struct SerializableItemRegistry {
  757    descriptors_by_kind: HashMap<Arc<str>, SerializableItemDescriptor>,
  758    descriptors_by_type: HashMap<TypeId, SerializableItemDescriptor>,
  759}
  760
  761impl Global for SerializableItemRegistry {}
  762
  763impl SerializableItemRegistry {
  764    fn deserialize(
  765        item_kind: &str,
  766        project: Entity<Project>,
  767        workspace: WeakEntity<Workspace>,
  768        workspace_id: WorkspaceId,
  769        item_item: ItemId,
  770        window: &mut Window,
  771        cx: &mut Context<Pane>,
  772    ) -> Task<Result<Box<dyn ItemHandle>>> {
  773        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  774            return Task::ready(Err(anyhow!(
  775                "cannot deserialize {}, descriptor not found",
  776                item_kind
  777            )));
  778        };
  779
  780        (descriptor.deserialize)(project, workspace, workspace_id, item_item, window, cx)
  781    }
  782
  783    fn cleanup(
  784        item_kind: &str,
  785        workspace_id: WorkspaceId,
  786        loaded_items: Vec<ItemId>,
  787        window: &mut Window,
  788        cx: &mut App,
  789    ) -> Task<Result<()>> {
  790        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  791            return Task::ready(Err(anyhow!(
  792                "cannot cleanup {}, descriptor not found",
  793                item_kind
  794            )));
  795        };
  796
  797        (descriptor.cleanup)(workspace_id, loaded_items, window, cx)
  798    }
  799
  800    fn view_to_serializable_item_handle(
  801        view: AnyView,
  802        cx: &App,
  803    ) -> Option<Box<dyn SerializableItemHandle>> {
  804        let this = cx.try_global::<Self>()?;
  805        let descriptor = this.descriptors_by_type.get(&view.entity_type())?;
  806        Some((descriptor.view_to_serializable_item)(view))
  807    }
  808
  809    fn descriptor(item_kind: &str, cx: &App) -> Option<SerializableItemDescriptor> {
  810        let this = cx.try_global::<Self>()?;
  811        this.descriptors_by_kind.get(item_kind).copied()
  812    }
  813}
  814
  815pub fn register_serializable_item<I: SerializableItem>(cx: &mut App) {
  816    let serialized_item_kind = I::serialized_item_kind();
  817
  818    let registry = cx.default_global::<SerializableItemRegistry>();
  819    let descriptor = SerializableItemDescriptor {
  820        deserialize: |project, workspace, workspace_id, item_id, window, cx| {
  821            let task = I::deserialize(project, workspace, workspace_id, item_id, window, cx);
  822            cx.foreground_executor()
  823                .spawn(async { Ok(Box::new(task.await?) as Box<_>) })
  824        },
  825        cleanup: |workspace_id, loaded_items, window, cx| {
  826            I::cleanup(workspace_id, loaded_items, window, cx)
  827        },
  828        view_to_serializable_item: |view| Box::new(view.downcast::<I>().unwrap()),
  829    };
  830    registry
  831        .descriptors_by_kind
  832        .insert(Arc::from(serialized_item_kind), descriptor);
  833    registry
  834        .descriptors_by_type
  835        .insert(TypeId::of::<I>(), descriptor);
  836}
  837
  838pub struct AppState {
  839    pub languages: Arc<LanguageRegistry>,
  840    pub client: Arc<Client>,
  841    pub user_store: Entity<UserStore>,
  842    pub workspace_store: Entity<WorkspaceStore>,
  843    pub fs: Arc<dyn fs::Fs>,
  844    pub build_window_options: fn(Option<Uuid>, &mut App) -> WindowOptions,
  845    pub node_runtime: NodeRuntime,
  846    pub session: Entity<AppSession>,
  847}
  848
  849struct GlobalAppState(Weak<AppState>);
  850
  851impl Global for GlobalAppState {}
  852
  853pub struct WorkspaceStore {
  854    workspaces: HashSet<WindowHandle<Workspace>>,
  855    client: Arc<Client>,
  856    _subscriptions: Vec<client::Subscription>,
  857}
  858
  859#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq, PartialOrd, Ord)]
  860pub enum CollaboratorId {
  861    PeerId(PeerId),
  862    Agent,
  863}
  864
  865impl From<PeerId> for CollaboratorId {
  866    fn from(peer_id: PeerId) -> Self {
  867        CollaboratorId::PeerId(peer_id)
  868    }
  869}
  870
  871impl From<&PeerId> for CollaboratorId {
  872    fn from(peer_id: &PeerId) -> Self {
  873        CollaboratorId::PeerId(*peer_id)
  874    }
  875}
  876
  877#[derive(PartialEq, Eq, PartialOrd, Ord, Debug)]
  878struct Follower {
  879    project_id: Option<u64>,
  880    peer_id: PeerId,
  881}
  882
  883impl AppState {
  884    #[track_caller]
  885    pub fn global(cx: &App) -> Weak<Self> {
  886        cx.global::<GlobalAppState>().0.clone()
  887    }
  888    pub fn try_global(cx: &App) -> Option<Weak<Self>> {
  889        cx.try_global::<GlobalAppState>()
  890            .map(|state| state.0.clone())
  891    }
  892    pub fn set_global(state: Weak<AppState>, cx: &mut App) {
  893        cx.set_global(GlobalAppState(state));
  894    }
  895
  896    #[cfg(any(test, feature = "test-support"))]
  897    pub fn test(cx: &mut App) -> Arc<Self> {
  898        use node_runtime::NodeRuntime;
  899        use session::Session;
  900        use settings::SettingsStore;
  901
  902        if !cx.has_global::<SettingsStore>() {
  903            let settings_store = SettingsStore::test(cx);
  904            cx.set_global(settings_store);
  905        }
  906
  907        let fs = fs::FakeFs::new(cx.background_executor().clone());
  908        let languages = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));
  909        let clock = Arc::new(clock::FakeSystemClock::new());
  910        let http_client = http_client::FakeHttpClient::with_404_response();
  911        let client = Client::new(clock, http_client.clone(), cx);
  912        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
  913        let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
  914        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
  915
  916        theme::init(theme::LoadThemes::JustBase, cx);
  917        client::init(&client, cx);
  918        crate::init_settings(cx);
  919
  920        Arc::new(Self {
  921            client,
  922            fs,
  923            languages,
  924            user_store,
  925            workspace_store,
  926            node_runtime: NodeRuntime::unavailable(),
  927            build_window_options: |_, _| Default::default(),
  928            session,
  929        })
  930    }
  931}
  932
  933struct DelayedDebouncedEditAction {
  934    task: Option<Task<()>>,
  935    cancel_channel: Option<oneshot::Sender<()>>,
  936}
  937
  938impl DelayedDebouncedEditAction {
  939    fn new() -> DelayedDebouncedEditAction {
  940        DelayedDebouncedEditAction {
  941            task: None,
  942            cancel_channel: None,
  943        }
  944    }
  945
  946    fn fire_new<F>(
  947        &mut self,
  948        delay: Duration,
  949        window: &mut Window,
  950        cx: &mut Context<Workspace>,
  951        func: F,
  952    ) where
  953        F: 'static
  954            + Send
  955            + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> Task<Result<()>>,
  956    {
  957        if let Some(channel) = self.cancel_channel.take() {
  958            _ = channel.send(());
  959        }
  960
  961        let (sender, mut receiver) = oneshot::channel::<()>();
  962        self.cancel_channel = Some(sender);
  963
  964        let previous_task = self.task.take();
  965        self.task = Some(cx.spawn_in(window, async move |workspace, cx| {
  966            let mut timer = cx.background_executor().timer(delay).fuse();
  967            if let Some(previous_task) = previous_task {
  968                previous_task.await;
  969            }
  970
  971            futures::select_biased! {
  972                _ = receiver => return,
  973                    _ = timer => {}
  974            }
  975
  976            if let Some(result) = workspace
  977                .update_in(cx, |workspace, window, cx| (func)(workspace, window, cx))
  978                .log_err()
  979            {
  980                result.await.log_err();
  981            }
  982        }));
  983    }
  984}
  985
  986pub enum Event {
  987    PaneAdded(Entity<Pane>),
  988    PaneRemoved,
  989    ItemAdded {
  990        item: Box<dyn ItemHandle>,
  991    },
  992    ItemRemoved,
  993    ActiveItemChanged,
  994    UserSavedItem {
  995        pane: WeakEntity<Pane>,
  996        item: Box<dyn WeakItemHandle>,
  997        save_intent: SaveIntent,
  998    },
  999    ContactRequestedJoin(u64),
 1000    WorkspaceCreated(WeakEntity<Workspace>),
 1001    OpenBundledFile {
 1002        text: Cow<'static, str>,
 1003        title: &'static str,
 1004        language: &'static str,
 1005    },
 1006    ZoomChanged,
 1007    ModalOpened,
 1008    ClearActivityIndicator,
 1009}
 1010
 1011#[derive(Debug)]
 1012pub enum OpenVisible {
 1013    All,
 1014    None,
 1015    OnlyFiles,
 1016    OnlyDirectories,
 1017}
 1018
 1019enum WorkspaceLocation {
 1020    // Valid local paths or SSH project to serialize
 1021    Location(SerializedWorkspaceLocation),
 1022    // No valid location found hence clear session id
 1023    DetachFromSession,
 1024    // No valid location found to serialize
 1025    None,
 1026}
 1027
 1028type PromptForNewPath = Box<
 1029    dyn Fn(
 1030        &mut Workspace,
 1031        DirectoryLister,
 1032        &mut Window,
 1033        &mut Context<Workspace>,
 1034    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1035>;
 1036
 1037type PromptForOpenPath = Box<
 1038    dyn Fn(
 1039        &mut Workspace,
 1040        DirectoryLister,
 1041        &mut Window,
 1042        &mut Context<Workspace>,
 1043    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1044>;
 1045
 1046#[derive(Default)]
 1047struct DispatchingKeystrokes {
 1048    dispatched: HashSet<Vec<Keystroke>>,
 1049    queue: VecDeque<Keystroke>,
 1050    task: Option<Shared<Task<()>>>,
 1051}
 1052
 1053/// Collects everything project-related for a certain window opened.
 1054/// In some way, is a counterpart of a window, as the [`WindowHandle`] could be downcast into `Workspace`.
 1055///
 1056/// A `Workspace` usually consists of 1 or more projects, a central pane group, 3 docks and a status bar.
 1057/// The `Workspace` owns everybody's state and serves as a default, "global context",
 1058/// that can be used to register a global action to be triggered from any place in the window.
 1059pub struct Workspace {
 1060    weak_self: WeakEntity<Self>,
 1061    workspace_actions: Vec<Box<dyn Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div>>,
 1062    zoomed: Option<AnyWeakView>,
 1063    previous_dock_drag_coordinates: Option<Point<Pixels>>,
 1064    zoomed_position: Option<DockPosition>,
 1065    center: PaneGroup,
 1066    left_dock: Entity<Dock>,
 1067    bottom_dock: Entity<Dock>,
 1068    right_dock: Entity<Dock>,
 1069    panes: Vec<Entity<Pane>>,
 1070    panes_by_item: HashMap<EntityId, WeakEntity<Pane>>,
 1071    active_pane: Entity<Pane>,
 1072    last_active_center_pane: Option<WeakEntity<Pane>>,
 1073    last_active_view_id: Option<proto::ViewId>,
 1074    status_bar: Entity<StatusBar>,
 1075    modal_layer: Entity<ModalLayer>,
 1076    toast_layer: Entity<ToastLayer>,
 1077    titlebar_item: Option<AnyView>,
 1078    notifications: Notifications,
 1079    suppressed_notifications: HashSet<NotificationId>,
 1080    project: Entity<Project>,
 1081    follower_states: HashMap<CollaboratorId, FollowerState>,
 1082    last_leaders_by_pane: HashMap<WeakEntity<Pane>, CollaboratorId>,
 1083    window_edited: bool,
 1084    dirty_items: HashMap<EntityId, Subscription>,
 1085    active_call: Option<(Entity<ActiveCall>, Vec<Subscription>)>,
 1086    leader_updates_tx: mpsc::UnboundedSender<(PeerId, proto::UpdateFollowers)>,
 1087    database_id: Option<WorkspaceId>,
 1088    app_state: Arc<AppState>,
 1089    dispatching_keystrokes: Rc<RefCell<DispatchingKeystrokes>>,
 1090    _subscriptions: Vec<Subscription>,
 1091    _apply_leader_updates: Task<Result<()>>,
 1092    _observe_current_user: Task<Result<()>>,
 1093    _schedule_serialize_workspace: Option<Task<()>>,
 1094    _schedule_serialize_ssh_paths: Option<Task<()>>,
 1095    pane_history_timestamp: Arc<AtomicUsize>,
 1096    bounds: Bounds<Pixels>,
 1097    pub centered_layout: bool,
 1098    bounds_save_task_queued: Option<Task<()>>,
 1099    on_prompt_for_new_path: Option<PromptForNewPath>,
 1100    on_prompt_for_open_path: Option<PromptForOpenPath>,
 1101    terminal_provider: Option<Box<dyn TerminalProvider>>,
 1102    debugger_provider: Option<Arc<dyn DebuggerProvider>>,
 1103    serializable_items_tx: UnboundedSender<Box<dyn SerializableItemHandle>>,
 1104    serialized_ssh_project: Option<SerializedSshProject>,
 1105    _items_serializer: Task<Result<()>>,
 1106    session_id: Option<String>,
 1107    scheduled_tasks: Vec<Task<()>>,
 1108}
 1109
 1110impl EventEmitter<Event> for Workspace {}
 1111
 1112#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
 1113pub struct ViewId {
 1114    pub creator: CollaboratorId,
 1115    pub id: u64,
 1116}
 1117
 1118pub struct FollowerState {
 1119    center_pane: Entity<Pane>,
 1120    dock_pane: Option<Entity<Pane>>,
 1121    active_view_id: Option<ViewId>,
 1122    items_by_leader_view_id: HashMap<ViewId, FollowerView>,
 1123}
 1124
 1125struct FollowerView {
 1126    view: Box<dyn FollowableItemHandle>,
 1127    location: Option<proto::PanelId>,
 1128}
 1129
 1130impl Workspace {
 1131    const DEFAULT_PADDING: f32 = 0.2;
 1132    const MAX_PADDING: f32 = 0.4;
 1133
 1134    pub fn new(
 1135        workspace_id: Option<WorkspaceId>,
 1136        project: Entity<Project>,
 1137        app_state: Arc<AppState>,
 1138        window: &mut Window,
 1139        cx: &mut Context<Self>,
 1140    ) -> Self {
 1141        cx.subscribe_in(&project, window, move |this, _, event, window, cx| {
 1142            match event {
 1143                project::Event::RemoteIdChanged(_) => {
 1144                    this.update_window_title(window, cx);
 1145                }
 1146
 1147                project::Event::CollaboratorLeft(peer_id) => {
 1148                    this.collaborator_left(*peer_id, window, cx);
 1149                }
 1150
 1151                project::Event::WorktreeRemoved(_) | project::Event::WorktreeAdded(_) => {
 1152                    this.update_window_title(window, cx);
 1153                    this.update_ssh_paths(cx);
 1154                    this.serialize_ssh_paths(window, cx);
 1155                    this.serialize_workspace(window, cx);
 1156                    // This event could be triggered by `AddFolderToProject` or `RemoveFromProject`.
 1157                    this.update_history(cx);
 1158                }
 1159
 1160                project::Event::DisconnectedFromHost => {
 1161                    this.update_window_edited(window, cx);
 1162                    let leaders_to_unfollow =
 1163                        this.follower_states.keys().copied().collect::<Vec<_>>();
 1164                    for leader_id in leaders_to_unfollow {
 1165                        this.unfollow(leader_id, window, cx);
 1166                    }
 1167                }
 1168
 1169                project::Event::DisconnectedFromSshRemote => {
 1170                    this.update_window_edited(window, cx);
 1171                }
 1172
 1173                project::Event::Closed => {
 1174                    window.remove_window();
 1175                }
 1176
 1177                project::Event::DeletedEntry(_, entry_id) => {
 1178                    for pane in this.panes.iter() {
 1179                        pane.update(cx, |pane, cx| {
 1180                            pane.handle_deleted_project_item(*entry_id, window, cx)
 1181                        });
 1182                    }
 1183                }
 1184
 1185                project::Event::Toast {
 1186                    notification_id,
 1187                    message,
 1188                } => this.show_notification(
 1189                    NotificationId::named(notification_id.clone()),
 1190                    cx,
 1191                    |cx| cx.new(|cx| MessageNotification::new(message.clone(), cx)),
 1192                ),
 1193
 1194                project::Event::HideToast { notification_id } => {
 1195                    this.dismiss_notification(&NotificationId::named(notification_id.clone()), cx)
 1196                }
 1197
 1198                project::Event::LanguageServerPrompt(request) => {
 1199                    struct LanguageServerPrompt;
 1200
 1201                    let mut hasher = DefaultHasher::new();
 1202                    request.lsp_name.as_str().hash(&mut hasher);
 1203                    let id = hasher.finish();
 1204
 1205                    this.show_notification(
 1206                        NotificationId::composite::<LanguageServerPrompt>(id as usize),
 1207                        cx,
 1208                        |cx| {
 1209                            cx.new(|cx| {
 1210                                notifications::LanguageServerPrompt::new(request.clone(), cx)
 1211                            })
 1212                        },
 1213                    );
 1214                }
 1215
 1216                project::Event::AgentLocationChanged => {
 1217                    this.handle_agent_location_changed(window, cx)
 1218                }
 1219
 1220                _ => {}
 1221            }
 1222            cx.notify()
 1223        })
 1224        .detach();
 1225
 1226        cx.subscribe_in(
 1227            &project.read(cx).breakpoint_store(),
 1228            window,
 1229            |workspace, _, event, window, cx| match event {
 1230                BreakpointStoreEvent::BreakpointsUpdated(_, _)
 1231                | BreakpointStoreEvent::BreakpointsCleared(_) => {
 1232                    workspace.serialize_workspace(window, cx);
 1233                }
 1234                BreakpointStoreEvent::SetDebugLine | BreakpointStoreEvent::ClearDebugLines => {}
 1235            },
 1236        )
 1237        .detach();
 1238
 1239        cx.on_focus_lost(window, |this, window, cx| {
 1240            let focus_handle = this.focus_handle(cx);
 1241            window.focus(&focus_handle);
 1242        })
 1243        .detach();
 1244
 1245        let weak_handle = cx.entity().downgrade();
 1246        let pane_history_timestamp = Arc::new(AtomicUsize::new(0));
 1247
 1248        let center_pane = cx.new(|cx| {
 1249            let mut center_pane = Pane::new(
 1250                weak_handle.clone(),
 1251                project.clone(),
 1252                pane_history_timestamp.clone(),
 1253                None,
 1254                NewFile.boxed_clone(),
 1255                window,
 1256                cx,
 1257            );
 1258            center_pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 1259            center_pane
 1260        });
 1261        cx.subscribe_in(&center_pane, window, Self::handle_pane_event)
 1262            .detach();
 1263
 1264        window.focus(&center_pane.focus_handle(cx));
 1265
 1266        cx.emit(Event::PaneAdded(center_pane.clone()));
 1267
 1268        let window_handle = window.window_handle().downcast::<Workspace>().unwrap();
 1269        app_state.workspace_store.update(cx, |store, _| {
 1270            store.workspaces.insert(window_handle);
 1271        });
 1272
 1273        let mut current_user = app_state.user_store.read(cx).watch_current_user();
 1274        let mut connection_status = app_state.client.status();
 1275        let _observe_current_user = cx.spawn_in(window, async move |this, cx| {
 1276            current_user.next().await;
 1277            connection_status.next().await;
 1278            let mut stream =
 1279                Stream::map(current_user, drop).merge(Stream::map(connection_status, drop));
 1280
 1281            while stream.recv().await.is_some() {
 1282                this.update(cx, |_, cx| cx.notify())?;
 1283            }
 1284            anyhow::Ok(())
 1285        });
 1286
 1287        // All leader updates are enqueued and then processed in a single task, so
 1288        // that each asynchronous operation can be run in order.
 1289        let (leader_updates_tx, mut leader_updates_rx) =
 1290            mpsc::unbounded::<(PeerId, proto::UpdateFollowers)>();
 1291        let _apply_leader_updates = cx.spawn_in(window, async move |this, cx| {
 1292            while let Some((leader_id, update)) = leader_updates_rx.next().await {
 1293                Self::process_leader_update(&this, leader_id, update, cx)
 1294                    .await
 1295                    .log_err();
 1296            }
 1297
 1298            Ok(())
 1299        });
 1300
 1301        cx.emit(Event::WorkspaceCreated(weak_handle.clone()));
 1302        let modal_layer = cx.new(|_| ModalLayer::new());
 1303        let toast_layer = cx.new(|_| ToastLayer::new());
 1304        cx.subscribe(
 1305            &modal_layer,
 1306            |_, _, _: &modal_layer::ModalOpenedEvent, cx| {
 1307                cx.emit(Event::ModalOpened);
 1308            },
 1309        )
 1310        .detach();
 1311
 1312        let left_dock = Dock::new(DockPosition::Left, modal_layer.clone(), window, cx);
 1313        let bottom_dock = Dock::new(DockPosition::Bottom, modal_layer.clone(), window, cx);
 1314        let right_dock = Dock::new(DockPosition::Right, modal_layer.clone(), window, cx);
 1315        let left_dock_buttons = cx.new(|cx| PanelButtons::new(left_dock.clone(), cx));
 1316        let bottom_dock_buttons = cx.new(|cx| PanelButtons::new(bottom_dock.clone(), cx));
 1317        let right_dock_buttons = cx.new(|cx| PanelButtons::new(right_dock.clone(), cx));
 1318        let status_bar = cx.new(|cx| {
 1319            let mut status_bar = StatusBar::new(&center_pane.clone(), window, cx);
 1320            status_bar.add_left_item(left_dock_buttons, window, cx);
 1321            status_bar.add_right_item(right_dock_buttons, window, cx);
 1322            status_bar.add_right_item(bottom_dock_buttons, window, cx);
 1323            status_bar
 1324        });
 1325
 1326        let session_id = app_state.session.read(cx).id().to_owned();
 1327
 1328        let mut active_call = None;
 1329        if let Some(call) = ActiveCall::try_global(cx) {
 1330            let call = call.clone();
 1331            let subscriptions = vec![cx.subscribe_in(&call, window, Self::on_active_call_event)];
 1332            active_call = Some((call, subscriptions));
 1333        }
 1334
 1335        let (serializable_items_tx, serializable_items_rx) =
 1336            mpsc::unbounded::<Box<dyn SerializableItemHandle>>();
 1337        let _items_serializer = cx.spawn_in(window, async move |this, cx| {
 1338            Self::serialize_items(&this, serializable_items_rx, cx).await
 1339        });
 1340
 1341        let subscriptions = vec![
 1342            cx.observe_window_activation(window, Self::on_window_activation_changed),
 1343            cx.observe_window_bounds(window, move |this, window, cx| {
 1344                if this.bounds_save_task_queued.is_some() {
 1345                    return;
 1346                }
 1347                this.bounds_save_task_queued = Some(cx.spawn_in(window, async move |this, cx| {
 1348                    cx.background_executor()
 1349                        .timer(Duration::from_millis(100))
 1350                        .await;
 1351                    this.update_in(cx, |this, window, cx| {
 1352                        if let Some(display) = window.display(cx) {
 1353                            if let Ok(display_uuid) = display.uuid() {
 1354                                let window_bounds = window.inner_window_bounds();
 1355                                if let Some(database_id) = workspace_id {
 1356                                    cx.background_executor()
 1357                                        .spawn(DB.set_window_open_status(
 1358                                            database_id,
 1359                                            SerializedWindowBounds(window_bounds),
 1360                                            display_uuid,
 1361                                        ))
 1362                                        .detach_and_log_err(cx);
 1363                                }
 1364                            }
 1365                        }
 1366                        this.bounds_save_task_queued.take();
 1367                    })
 1368                    .ok();
 1369                }));
 1370                cx.notify();
 1371            }),
 1372            cx.observe_window_appearance(window, |_, window, cx| {
 1373                let window_appearance = window.appearance();
 1374
 1375                *SystemAppearance::global_mut(cx) = SystemAppearance(window_appearance.into());
 1376
 1377                ThemeSettings::reload_current_theme(cx);
 1378                ThemeSettings::reload_current_icon_theme(cx);
 1379            }),
 1380            cx.on_release(move |this, cx| {
 1381                this.app_state.workspace_store.update(cx, move |store, _| {
 1382                    store.workspaces.remove(&window_handle.clone());
 1383                })
 1384            }),
 1385        ];
 1386
 1387        cx.defer_in(window, |this, window, cx| {
 1388            this.update_window_title(window, cx);
 1389            this.show_initial_notifications(cx);
 1390        });
 1391        Workspace {
 1392            weak_self: weak_handle.clone(),
 1393            zoomed: None,
 1394            zoomed_position: None,
 1395            previous_dock_drag_coordinates: None,
 1396            center: PaneGroup::new(center_pane.clone()),
 1397            panes: vec![center_pane.clone()],
 1398            panes_by_item: Default::default(),
 1399            active_pane: center_pane.clone(),
 1400            last_active_center_pane: Some(center_pane.downgrade()),
 1401            last_active_view_id: None,
 1402            status_bar,
 1403            modal_layer,
 1404            toast_layer,
 1405            titlebar_item: None,
 1406            notifications: Notifications::default(),
 1407            suppressed_notifications: HashSet::default(),
 1408            left_dock,
 1409            bottom_dock,
 1410            right_dock,
 1411            project: project.clone(),
 1412            follower_states: Default::default(),
 1413            last_leaders_by_pane: Default::default(),
 1414            dispatching_keystrokes: Default::default(),
 1415            window_edited: false,
 1416            dirty_items: Default::default(),
 1417            active_call,
 1418            database_id: workspace_id,
 1419            app_state,
 1420            _observe_current_user,
 1421            _apply_leader_updates,
 1422            _schedule_serialize_workspace: None,
 1423            _schedule_serialize_ssh_paths: None,
 1424            leader_updates_tx,
 1425            _subscriptions: subscriptions,
 1426            pane_history_timestamp,
 1427            workspace_actions: Default::default(),
 1428            // This data will be incorrect, but it will be overwritten by the time it needs to be used.
 1429            bounds: Default::default(),
 1430            centered_layout: false,
 1431            bounds_save_task_queued: None,
 1432            on_prompt_for_new_path: None,
 1433            on_prompt_for_open_path: None,
 1434            terminal_provider: None,
 1435            debugger_provider: None,
 1436            serializable_items_tx,
 1437            _items_serializer,
 1438            session_id: Some(session_id),
 1439            serialized_ssh_project: None,
 1440            scheduled_tasks: Vec::new(),
 1441        }
 1442    }
 1443
 1444    pub fn new_local(
 1445        abs_paths: Vec<PathBuf>,
 1446        app_state: Arc<AppState>,
 1447        requesting_window: Option<WindowHandle<Workspace>>,
 1448        env: Option<HashMap<String, String>>,
 1449        cx: &mut App,
 1450    ) -> Task<
 1451        anyhow::Result<(
 1452            WindowHandle<Workspace>,
 1453            Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 1454        )>,
 1455    > {
 1456        let project_handle = Project::local(
 1457            app_state.client.clone(),
 1458            app_state.node_runtime.clone(),
 1459            app_state.user_store.clone(),
 1460            app_state.languages.clone(),
 1461            app_state.fs.clone(),
 1462            env,
 1463            cx,
 1464        );
 1465
 1466        cx.spawn(async move |cx| {
 1467            let mut paths_to_open = Vec::with_capacity(abs_paths.len());
 1468            for path in abs_paths.into_iter() {
 1469                if let Some(canonical) = app_state.fs.canonicalize(&path).await.ok() {
 1470                    paths_to_open.push(canonical)
 1471                } else {
 1472                    paths_to_open.push(path)
 1473                }
 1474            }
 1475
 1476            let serialized_workspace =
 1477                persistence::DB.workspace_for_roots(paths_to_open.as_slice());
 1478
 1479            let workspace_location = serialized_workspace
 1480                .as_ref()
 1481                .map(|ws| &ws.location)
 1482                .and_then(|loc| match loc {
 1483                    SerializedWorkspaceLocation::Local(_, order) => {
 1484                        Some((loc.sorted_paths(), order.order()))
 1485                    }
 1486                    _ => None,
 1487                });
 1488
 1489            if let Some((paths, order)) = workspace_location {
 1490                paths_to_open = paths.iter().cloned().collect();
 1491
 1492                if order.iter().enumerate().any(|(i, &j)| i != j) {
 1493                    project_handle
 1494                        .update(cx, |project, cx| {
 1495                            project.set_worktrees_reordered(true, cx);
 1496                        })
 1497                        .log_err();
 1498                }
 1499            }
 1500
 1501            // Get project paths for all of the abs_paths
 1502            let mut project_paths: Vec<(PathBuf, Option<ProjectPath>)> =
 1503                Vec::with_capacity(paths_to_open.len());
 1504
 1505            for path in paths_to_open.into_iter() {
 1506                if let Some((_, project_entry)) = cx
 1507                    .update(|cx| {
 1508                        Workspace::project_path_for_path(project_handle.clone(), &path, true, cx)
 1509                    })?
 1510                    .await
 1511                    .log_err()
 1512                {
 1513                    project_paths.push((path, Some(project_entry)));
 1514                } else {
 1515                    project_paths.push((path, None));
 1516                }
 1517            }
 1518
 1519            let workspace_id = if let Some(serialized_workspace) = serialized_workspace.as_ref() {
 1520                serialized_workspace.id
 1521            } else {
 1522                DB.next_id().await.unwrap_or_else(|_| Default::default())
 1523            };
 1524
 1525            let toolchains = DB.toolchains(workspace_id).await?;
 1526
 1527            for (toolchain, worktree_id, path) in toolchains {
 1528                let toolchain_path = PathBuf::from(toolchain.path.clone().to_string());
 1529                if !app_state.fs.is_file(toolchain_path.as_path()).await {
 1530                    continue;
 1531                }
 1532
 1533                project_handle
 1534                    .update(cx, |this, cx| {
 1535                        this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 1536                    })?
 1537                    .await;
 1538            }
 1539            let window = if let Some(window) = requesting_window {
 1540                let centered_layout = serialized_workspace
 1541                    .as_ref()
 1542                    .map(|w| w.centered_layout)
 1543                    .unwrap_or(false);
 1544
 1545                cx.update_window(window.into(), |_, window, cx| {
 1546                    window.replace_root(cx, |window, cx| {
 1547                        let mut workspace = Workspace::new(
 1548                            Some(workspace_id),
 1549                            project_handle.clone(),
 1550                            app_state.clone(),
 1551                            window,
 1552                            cx,
 1553                        );
 1554
 1555                        workspace.centered_layout = centered_layout;
 1556                        workspace
 1557                    });
 1558                })?;
 1559                window
 1560            } else {
 1561                let window_bounds_override = window_bounds_env_override();
 1562
 1563                let (window_bounds, display) = if let Some(bounds) = window_bounds_override {
 1564                    (Some(WindowBounds::Windowed(bounds)), None)
 1565                } else {
 1566                    let restorable_bounds = serialized_workspace
 1567                        .as_ref()
 1568                        .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 1569                        .or_else(|| {
 1570                            let (display, window_bounds) = DB.last_window().log_err()?;
 1571                            Some((display?, window_bounds?))
 1572                        });
 1573
 1574                    if let Some((serialized_display, serialized_status)) = restorable_bounds {
 1575                        (Some(serialized_status.0), Some(serialized_display))
 1576                    } else {
 1577                        (None, None)
 1578                    }
 1579                };
 1580
 1581                // Use the serialized workspace to construct the new window
 1582                let mut options = cx.update(|cx| (app_state.build_window_options)(display, cx))?;
 1583                options.window_bounds = window_bounds;
 1584                let centered_layout = serialized_workspace
 1585                    .as_ref()
 1586                    .map(|w| w.centered_layout)
 1587                    .unwrap_or(false);
 1588                cx.open_window(options, {
 1589                    let app_state = app_state.clone();
 1590                    let project_handle = project_handle.clone();
 1591                    move |window, cx| {
 1592                        cx.new(|cx| {
 1593                            let mut workspace = Workspace::new(
 1594                                Some(workspace_id),
 1595                                project_handle,
 1596                                app_state,
 1597                                window,
 1598                                cx,
 1599                            );
 1600                            workspace.centered_layout = centered_layout;
 1601                            workspace
 1602                        })
 1603                    }
 1604                })?
 1605            };
 1606
 1607            notify_if_database_failed(window, cx);
 1608            let opened_items = window
 1609                .update(cx, |_workspace, window, cx| {
 1610                    open_items(serialized_workspace, project_paths, window, cx)
 1611                })?
 1612                .await
 1613                .unwrap_or_default();
 1614
 1615            window
 1616                .update(cx, |workspace, window, cx| {
 1617                    window.activate_window();
 1618                    workspace.update_history(cx);
 1619                })
 1620                .log_err();
 1621            Ok((window, opened_items))
 1622        })
 1623    }
 1624
 1625    pub fn weak_handle(&self) -> WeakEntity<Self> {
 1626        self.weak_self.clone()
 1627    }
 1628
 1629    pub fn left_dock(&self) -> &Entity<Dock> {
 1630        &self.left_dock
 1631    }
 1632
 1633    pub fn bottom_dock(&self) -> &Entity<Dock> {
 1634        &self.bottom_dock
 1635    }
 1636
 1637    pub fn set_bottom_dock_layout(
 1638        &mut self,
 1639        layout: BottomDockLayout,
 1640        window: &mut Window,
 1641        cx: &mut Context<Self>,
 1642    ) {
 1643        let fs = self.project().read(cx).fs();
 1644        settings::update_settings_file::<WorkspaceSettings>(fs.clone(), cx, move |content, _cx| {
 1645            content.bottom_dock_layout = Some(layout);
 1646        });
 1647
 1648        cx.notify();
 1649        self.serialize_workspace(window, cx);
 1650    }
 1651
 1652    pub fn right_dock(&self) -> &Entity<Dock> {
 1653        &self.right_dock
 1654    }
 1655
 1656    pub fn all_docks(&self) -> [&Entity<Dock>; 3] {
 1657        [&self.left_dock, &self.bottom_dock, &self.right_dock]
 1658    }
 1659
 1660    pub fn dock_at_position(&self, position: DockPosition) -> &Entity<Dock> {
 1661        match position {
 1662            DockPosition::Left => &self.left_dock,
 1663            DockPosition::Bottom => &self.bottom_dock,
 1664            DockPosition::Right => &self.right_dock,
 1665        }
 1666    }
 1667
 1668    pub fn is_edited(&self) -> bool {
 1669        self.window_edited
 1670    }
 1671
 1672    pub fn add_panel<T: Panel>(
 1673        &mut self,
 1674        panel: Entity<T>,
 1675        window: &mut Window,
 1676        cx: &mut Context<Self>,
 1677    ) {
 1678        let focus_handle = panel.panel_focus_handle(cx);
 1679        cx.on_focus_in(&focus_handle, window, Self::handle_panel_focused)
 1680            .detach();
 1681
 1682        let dock_position = panel.position(window, cx);
 1683        let dock = self.dock_at_position(dock_position);
 1684
 1685        dock.update(cx, |dock, cx| {
 1686            dock.add_panel(panel, self.weak_self.clone(), window, cx)
 1687        });
 1688    }
 1689
 1690    pub fn status_bar(&self) -> &Entity<StatusBar> {
 1691        &self.status_bar
 1692    }
 1693
 1694    pub fn app_state(&self) -> &Arc<AppState> {
 1695        &self.app_state
 1696    }
 1697
 1698    pub fn user_store(&self) -> &Entity<UserStore> {
 1699        &self.app_state.user_store
 1700    }
 1701
 1702    pub fn project(&self) -> &Entity<Project> {
 1703        &self.project
 1704    }
 1705
 1706    pub fn recently_activated_items(&self, cx: &App) -> HashMap<EntityId, usize> {
 1707        let mut history: HashMap<EntityId, usize> = HashMap::default();
 1708
 1709        for pane_handle in &self.panes {
 1710            let pane = pane_handle.read(cx);
 1711
 1712            for entry in pane.activation_history() {
 1713                history.insert(
 1714                    entry.entity_id,
 1715                    history
 1716                        .get(&entry.entity_id)
 1717                        .cloned()
 1718                        .unwrap_or(0)
 1719                        .max(entry.timestamp),
 1720                );
 1721            }
 1722        }
 1723
 1724        history
 1725    }
 1726
 1727    pub fn recent_active_item_by_type<T: 'static>(&self, cx: &App) -> Option<Entity<T>> {
 1728        let mut recent_item: Option<Entity<T>> = None;
 1729        let mut recent_timestamp = 0;
 1730        for pane_handle in &self.panes {
 1731            let pane = pane_handle.read(cx);
 1732            let item_map: HashMap<EntityId, &Box<dyn ItemHandle>> =
 1733                pane.items().map(|item| (item.item_id(), item)).collect();
 1734            for entry in pane.activation_history() {
 1735                if entry.timestamp > recent_timestamp {
 1736                    if let Some(&item) = item_map.get(&entry.entity_id) {
 1737                        if let Some(typed_item) = item.act_as::<T>(cx) {
 1738                            recent_timestamp = entry.timestamp;
 1739                            recent_item = Some(typed_item);
 1740                        }
 1741                    }
 1742                }
 1743            }
 1744        }
 1745        recent_item
 1746    }
 1747
 1748    pub fn recent_navigation_history_iter(
 1749        &self,
 1750        cx: &App,
 1751    ) -> impl Iterator<Item = (ProjectPath, Option<PathBuf>)> {
 1752        let mut abs_paths_opened: HashMap<PathBuf, HashSet<ProjectPath>> = HashMap::default();
 1753        let mut history: HashMap<ProjectPath, (Option<PathBuf>, usize)> = HashMap::default();
 1754
 1755        for pane in &self.panes {
 1756            let pane = pane.read(cx);
 1757
 1758            pane.nav_history()
 1759                .for_each_entry(cx, |entry, (project_path, fs_path)| {
 1760                    if let Some(fs_path) = &fs_path {
 1761                        abs_paths_opened
 1762                            .entry(fs_path.clone())
 1763                            .or_default()
 1764                            .insert(project_path.clone());
 1765                    }
 1766                    let timestamp = entry.timestamp;
 1767                    match history.entry(project_path) {
 1768                        hash_map::Entry::Occupied(mut entry) => {
 1769                            let (_, old_timestamp) = entry.get();
 1770                            if &timestamp > old_timestamp {
 1771                                entry.insert((fs_path, timestamp));
 1772                            }
 1773                        }
 1774                        hash_map::Entry::Vacant(entry) => {
 1775                            entry.insert((fs_path, timestamp));
 1776                        }
 1777                    }
 1778                });
 1779
 1780            if let Some(item) = pane.active_item() {
 1781                if let Some(project_path) = item.project_path(cx) {
 1782                    let fs_path = self.project.read(cx).absolute_path(&project_path, cx);
 1783
 1784                    if let Some(fs_path) = &fs_path {
 1785                        abs_paths_opened
 1786                            .entry(fs_path.clone())
 1787                            .or_default()
 1788                            .insert(project_path.clone());
 1789                    }
 1790
 1791                    history.insert(project_path, (fs_path, std::usize::MAX));
 1792                }
 1793            }
 1794        }
 1795
 1796        history
 1797            .into_iter()
 1798            .sorted_by_key(|(_, (_, order))| *order)
 1799            .map(|(project_path, (fs_path, _))| (project_path, fs_path))
 1800            .rev()
 1801            .filter(move |(history_path, abs_path)| {
 1802                let latest_project_path_opened = abs_path
 1803                    .as_ref()
 1804                    .and_then(|abs_path| abs_paths_opened.get(abs_path))
 1805                    .and_then(|project_paths| {
 1806                        project_paths
 1807                            .iter()
 1808                            .max_by(|b1, b2| b1.worktree_id.cmp(&b2.worktree_id))
 1809                    });
 1810
 1811                match latest_project_path_opened {
 1812                    Some(latest_project_path_opened) => latest_project_path_opened == history_path,
 1813                    None => true,
 1814                }
 1815            })
 1816    }
 1817
 1818    pub fn recent_navigation_history(
 1819        &self,
 1820        limit: Option<usize>,
 1821        cx: &App,
 1822    ) -> Vec<(ProjectPath, Option<PathBuf>)> {
 1823        self.recent_navigation_history_iter(cx)
 1824            .take(limit.unwrap_or(usize::MAX))
 1825            .collect()
 1826    }
 1827
 1828    fn navigate_history(
 1829        &mut self,
 1830        pane: WeakEntity<Pane>,
 1831        mode: NavigationMode,
 1832        window: &mut Window,
 1833        cx: &mut Context<Workspace>,
 1834    ) -> Task<Result<()>> {
 1835        let to_load = if let Some(pane) = pane.upgrade() {
 1836            pane.update(cx, |pane, cx| {
 1837                window.focus(&pane.focus_handle(cx));
 1838                loop {
 1839                    // Retrieve the weak item handle from the history.
 1840                    let entry = pane.nav_history_mut().pop(mode, cx)?;
 1841
 1842                    // If the item is still present in this pane, then activate it.
 1843                    if let Some(index) = entry
 1844                        .item
 1845                        .upgrade()
 1846                        .and_then(|v| pane.index_for_item(v.as_ref()))
 1847                    {
 1848                        let prev_active_item_index = pane.active_item_index();
 1849                        pane.nav_history_mut().set_mode(mode);
 1850                        pane.activate_item(index, true, true, window, cx);
 1851                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1852
 1853                        let mut navigated = prev_active_item_index != pane.active_item_index();
 1854                        if let Some(data) = entry.data {
 1855                            navigated |= pane.active_item()?.navigate(data, window, cx);
 1856                        }
 1857
 1858                        if navigated {
 1859                            break None;
 1860                        }
 1861                    } else {
 1862                        // If the item is no longer present in this pane, then retrieve its
 1863                        // path info in order to reopen it.
 1864                        break pane
 1865                            .nav_history()
 1866                            .path_for_item(entry.item.id())
 1867                            .map(|(project_path, abs_path)| (project_path, abs_path, entry));
 1868                    }
 1869                }
 1870            })
 1871        } else {
 1872            None
 1873        };
 1874
 1875        if let Some((project_path, abs_path, entry)) = to_load {
 1876            // If the item was no longer present, then load it again from its previous path, first try the local path
 1877            let open_by_project_path = self.load_path(project_path.clone(), window, cx);
 1878
 1879            cx.spawn_in(window, async move  |workspace, cx| {
 1880                let open_by_project_path = open_by_project_path.await;
 1881                let mut navigated = false;
 1882                match open_by_project_path
 1883                    .with_context(|| format!("Navigating to {project_path:?}"))
 1884                {
 1885                    Ok((project_entry_id, build_item)) => {
 1886                        let prev_active_item_id = pane.update(cx, |pane, _| {
 1887                            pane.nav_history_mut().set_mode(mode);
 1888                            pane.active_item().map(|p| p.item_id())
 1889                        })?;
 1890
 1891                        pane.update_in(cx, |pane, window, cx| {
 1892                            let item = pane.open_item(
 1893                                project_entry_id,
 1894                                project_path,
 1895                                true,
 1896                                entry.is_preview,
 1897                                true,
 1898                                None,
 1899                                window, cx,
 1900                                build_item,
 1901                            );
 1902                            navigated |= Some(item.item_id()) != prev_active_item_id;
 1903                            pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1904                            if let Some(data) = entry.data {
 1905                                navigated |= item.navigate(data, window, cx);
 1906                            }
 1907                        })?;
 1908                    }
 1909                    Err(open_by_project_path_e) => {
 1910                        // Fall back to opening by abs path, in case an external file was opened and closed,
 1911                        // and its worktree is now dropped
 1912                        if let Some(abs_path) = abs_path {
 1913                            let prev_active_item_id = pane.update(cx, |pane, _| {
 1914                                pane.nav_history_mut().set_mode(mode);
 1915                                pane.active_item().map(|p| p.item_id())
 1916                            })?;
 1917                            let open_by_abs_path = workspace.update_in(cx, |workspace, window, cx| {
 1918                                workspace.open_abs_path(abs_path.clone(), OpenOptions { visible: Some(OpenVisible::None), ..Default::default() }, window, cx)
 1919                            })?;
 1920                            match open_by_abs_path
 1921                                .await
 1922                                .with_context(|| format!("Navigating to {abs_path:?}"))
 1923                            {
 1924                                Ok(item) => {
 1925                                    pane.update_in(cx, |pane, window, cx| {
 1926                                        navigated |= Some(item.item_id()) != prev_active_item_id;
 1927                                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1928                                        if let Some(data) = entry.data {
 1929                                            navigated |= item.navigate(data, window, cx);
 1930                                        }
 1931                                    })?;
 1932                                }
 1933                                Err(open_by_abs_path_e) => {
 1934                                    log::error!("Failed to navigate history: {open_by_project_path_e:#} and {open_by_abs_path_e:#}");
 1935                                }
 1936                            }
 1937                        }
 1938                    }
 1939                }
 1940
 1941                if !navigated {
 1942                    workspace
 1943                        .update_in(cx, |workspace, window, cx| {
 1944                            Self::navigate_history(workspace, pane, mode, window, cx)
 1945                        })?
 1946                        .await?;
 1947                }
 1948
 1949                Ok(())
 1950            })
 1951        } else {
 1952            Task::ready(Ok(()))
 1953        }
 1954    }
 1955
 1956    pub fn go_back(
 1957        &mut self,
 1958        pane: WeakEntity<Pane>,
 1959        window: &mut Window,
 1960        cx: &mut Context<Workspace>,
 1961    ) -> Task<Result<()>> {
 1962        self.navigate_history(pane, NavigationMode::GoingBack, window, cx)
 1963    }
 1964
 1965    pub fn go_forward(
 1966        &mut self,
 1967        pane: WeakEntity<Pane>,
 1968        window: &mut Window,
 1969        cx: &mut Context<Workspace>,
 1970    ) -> Task<Result<()>> {
 1971        self.navigate_history(pane, NavigationMode::GoingForward, window, cx)
 1972    }
 1973
 1974    pub fn reopen_closed_item(
 1975        &mut self,
 1976        window: &mut Window,
 1977        cx: &mut Context<Workspace>,
 1978    ) -> Task<Result<()>> {
 1979        self.navigate_history(
 1980            self.active_pane().downgrade(),
 1981            NavigationMode::ReopeningClosedItem,
 1982            window,
 1983            cx,
 1984        )
 1985    }
 1986
 1987    pub fn client(&self) -> &Arc<Client> {
 1988        &self.app_state.client
 1989    }
 1990
 1991    pub fn set_titlebar_item(&mut self, item: AnyView, _: &mut Window, cx: &mut Context<Self>) {
 1992        self.titlebar_item = Some(item);
 1993        cx.notify();
 1994    }
 1995
 1996    pub fn set_prompt_for_new_path(&mut self, prompt: PromptForNewPath) {
 1997        self.on_prompt_for_new_path = Some(prompt)
 1998    }
 1999
 2000    pub fn set_prompt_for_open_path(&mut self, prompt: PromptForOpenPath) {
 2001        self.on_prompt_for_open_path = Some(prompt)
 2002    }
 2003
 2004    pub fn set_terminal_provider(&mut self, provider: impl TerminalProvider + 'static) {
 2005        self.terminal_provider = Some(Box::new(provider));
 2006    }
 2007
 2008    pub fn set_debugger_provider(&mut self, provider: impl DebuggerProvider + 'static) {
 2009        self.debugger_provider = Some(Arc::new(provider));
 2010    }
 2011
 2012    pub fn debugger_provider(&self) -> Option<Arc<dyn DebuggerProvider>> {
 2013        self.debugger_provider.clone()
 2014    }
 2015
 2016    pub fn serialized_ssh_project(&self) -> Option<SerializedSshProject> {
 2017        self.serialized_ssh_project.clone()
 2018    }
 2019
 2020    pub fn set_serialized_ssh_project(&mut self, serialized_ssh_project: SerializedSshProject) {
 2021        self.serialized_ssh_project = Some(serialized_ssh_project);
 2022    }
 2023
 2024    pub fn prompt_for_open_path(
 2025        &mut self,
 2026        path_prompt_options: PathPromptOptions,
 2027        lister: DirectoryLister,
 2028        window: &mut Window,
 2029        cx: &mut Context<Self>,
 2030    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2031        if !lister.is_local(cx) || !WorkspaceSettings::get_global(cx).use_system_path_prompts {
 2032            let prompt = self.on_prompt_for_open_path.take().unwrap();
 2033            let rx = prompt(self, lister, window, cx);
 2034            self.on_prompt_for_open_path = Some(prompt);
 2035            rx
 2036        } else {
 2037            let (tx, rx) = oneshot::channel();
 2038            let abs_path = cx.prompt_for_paths(path_prompt_options);
 2039
 2040            cx.spawn_in(window, async move |workspace, cx| {
 2041                let Ok(result) = abs_path.await else {
 2042                    return Ok(());
 2043                };
 2044
 2045                match result {
 2046                    Ok(result) => {
 2047                        tx.send(result).ok();
 2048                    }
 2049                    Err(err) => {
 2050                        let rx = workspace.update_in(cx, |workspace, window, cx| {
 2051                            workspace.show_portal_error(err.to_string(), cx);
 2052                            let prompt = workspace.on_prompt_for_open_path.take().unwrap();
 2053                            let rx = prompt(workspace, lister, window, cx);
 2054                            workspace.on_prompt_for_open_path = Some(prompt);
 2055                            rx
 2056                        })?;
 2057                        if let Ok(path) = rx.await {
 2058                            tx.send(path).ok();
 2059                        }
 2060                    }
 2061                };
 2062                anyhow::Ok(())
 2063            })
 2064            .detach();
 2065
 2066            rx
 2067        }
 2068    }
 2069
 2070    pub fn prompt_for_new_path(
 2071        &mut self,
 2072        lister: DirectoryLister,
 2073        window: &mut Window,
 2074        cx: &mut Context<Self>,
 2075    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2076        if self.project.read(cx).is_via_collab()
 2077            || self.project.read(cx).is_via_ssh()
 2078            || !WorkspaceSettings::get_global(cx).use_system_path_prompts
 2079        {
 2080            let prompt = self.on_prompt_for_new_path.take().unwrap();
 2081            let rx = prompt(self, lister, window, cx);
 2082            self.on_prompt_for_new_path = Some(prompt);
 2083            return rx;
 2084        }
 2085
 2086        let (tx, rx) = oneshot::channel();
 2087        cx.spawn_in(window, async move |workspace, cx| {
 2088            let abs_path = workspace.update(cx, |workspace, cx| {
 2089                let relative_to = workspace
 2090                    .most_recent_active_path(cx)
 2091                    .and_then(|p| p.parent().map(|p| p.to_path_buf()))
 2092                    .or_else(|| {
 2093                        let project = workspace.project.read(cx);
 2094                        project.visible_worktrees(cx).find_map(|worktree| {
 2095                            Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
 2096                        })
 2097                    })
 2098                    .or_else(std::env::home_dir)
 2099                    .unwrap_or_else(|| PathBuf::from(""));
 2100                cx.prompt_for_new_path(&relative_to)
 2101            })?;
 2102            let abs_path = match abs_path.await? {
 2103                Ok(path) => path,
 2104                Err(err) => {
 2105                    let rx = workspace.update_in(cx, |workspace, window, cx| {
 2106                        workspace.show_portal_error(err.to_string(), cx);
 2107
 2108                        let prompt = workspace.on_prompt_for_new_path.take().unwrap();
 2109                        let rx = prompt(workspace, lister, window, cx);
 2110                        workspace.on_prompt_for_new_path = Some(prompt);
 2111                        rx
 2112                    })?;
 2113                    if let Ok(path) = rx.await {
 2114                        tx.send(path).ok();
 2115                    }
 2116                    return anyhow::Ok(());
 2117                }
 2118            };
 2119
 2120            tx.send(abs_path.map(|path| vec![path])).ok();
 2121            anyhow::Ok(())
 2122        })
 2123        .detach();
 2124
 2125        rx
 2126    }
 2127
 2128    pub fn titlebar_item(&self) -> Option<AnyView> {
 2129        self.titlebar_item.clone()
 2130    }
 2131
 2132    /// Call the given callback with a workspace whose project is local.
 2133    ///
 2134    /// If the given workspace has a local project, then it will be passed
 2135    /// to the callback. Otherwise, a new empty window will be created.
 2136    pub fn with_local_workspace<T, F>(
 2137        &mut self,
 2138        window: &mut Window,
 2139        cx: &mut Context<Self>,
 2140        callback: F,
 2141    ) -> Task<Result<T>>
 2142    where
 2143        T: 'static,
 2144        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
 2145    {
 2146        if self.project.read(cx).is_local() {
 2147            Task::ready(Ok(callback(self, window, cx)))
 2148        } else {
 2149            let env = self.project.read(cx).cli_environment(cx);
 2150            let task = Self::new_local(Vec::new(), self.app_state.clone(), None, env, cx);
 2151            cx.spawn_in(window, async move |_vh, cx| {
 2152                let (workspace, _) = task.await?;
 2153                workspace.update(cx, callback)
 2154            })
 2155        }
 2156    }
 2157
 2158    pub fn worktrees<'a>(&self, cx: &'a App) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2159        self.project.read(cx).worktrees(cx)
 2160    }
 2161
 2162    pub fn visible_worktrees<'a>(
 2163        &self,
 2164        cx: &'a App,
 2165    ) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2166        self.project.read(cx).visible_worktrees(cx)
 2167    }
 2168
 2169    #[cfg(any(test, feature = "test-support"))]
 2170    pub fn worktree_scans_complete(&self, cx: &App) -> impl Future<Output = ()> + 'static + use<> {
 2171        let futures = self
 2172            .worktrees(cx)
 2173            .filter_map(|worktree| worktree.read(cx).as_local())
 2174            .map(|worktree| worktree.scan_complete())
 2175            .collect::<Vec<_>>();
 2176        async move {
 2177            for future in futures {
 2178                future.await;
 2179            }
 2180        }
 2181    }
 2182
 2183    pub fn close_global(_: &CloseWindow, cx: &mut App) {
 2184        cx.defer(|cx| {
 2185            cx.windows().iter().find(|window| {
 2186                window
 2187                    .update(cx, |_, window, _| {
 2188                        if window.is_window_active() {
 2189                            //This can only get called when the window's project connection has been lost
 2190                            //so we don't need to prompt the user for anything and instead just close the window
 2191                            window.remove_window();
 2192                            true
 2193                        } else {
 2194                            false
 2195                        }
 2196                    })
 2197                    .unwrap_or(false)
 2198            });
 2199        });
 2200    }
 2201
 2202    pub fn close_window(&mut self, _: &CloseWindow, window: &mut Window, cx: &mut Context<Self>) {
 2203        let prepare = self.prepare_to_close(CloseIntent::CloseWindow, window, cx);
 2204        cx.spawn_in(window, async move |_, cx| {
 2205            if prepare.await? {
 2206                cx.update(|window, _cx| window.remove_window())?;
 2207            }
 2208            anyhow::Ok(())
 2209        })
 2210        .detach_and_log_err(cx)
 2211    }
 2212
 2213    pub fn move_focused_panel_to_next_position(
 2214        &mut self,
 2215        _: &MoveFocusedPanelToNextPosition,
 2216        window: &mut Window,
 2217        cx: &mut Context<Self>,
 2218    ) {
 2219        let docks = self.all_docks();
 2220        let active_dock = docks
 2221            .into_iter()
 2222            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 2223
 2224        if let Some(dock) = active_dock {
 2225            dock.update(cx, |dock, cx| {
 2226                let active_panel = dock
 2227                    .active_panel()
 2228                    .filter(|panel| panel.panel_focus_handle(cx).contains_focused(window, cx));
 2229
 2230                if let Some(panel) = active_panel {
 2231                    panel.move_to_next_position(window, cx);
 2232                }
 2233            })
 2234        }
 2235    }
 2236
 2237    pub fn prepare_to_close(
 2238        &mut self,
 2239        close_intent: CloseIntent,
 2240        window: &mut Window,
 2241        cx: &mut Context<Self>,
 2242    ) -> Task<Result<bool>> {
 2243        let active_call = self.active_call().cloned();
 2244
 2245        // On Linux and Windows, closing the last window should restore the last workspace.
 2246        let save_last_workspace = cfg!(not(target_os = "macos"))
 2247            && close_intent != CloseIntent::ReplaceWindow
 2248            && cx.windows().len() == 1;
 2249
 2250        cx.spawn_in(window, async move |this, cx| {
 2251            let workspace_count = cx.update(|_window, cx| {
 2252                cx.windows()
 2253                    .iter()
 2254                    .filter(|window| window.downcast::<Workspace>().is_some())
 2255                    .count()
 2256            })?;
 2257
 2258            if let Some(active_call) = active_call {
 2259                if close_intent != CloseIntent::Quit
 2260                    && workspace_count == 1
 2261                    && active_call.read_with(cx, |call, _| call.room().is_some())?
 2262                {
 2263                    let answer = cx.update(|window, cx| {
 2264                        window.prompt(
 2265                            PromptLevel::Warning,
 2266                            "Do you want to leave the current call?",
 2267                            None,
 2268                            &["Close window and hang up", "Cancel"],
 2269                            cx,
 2270                        )
 2271                    })?;
 2272
 2273                    if answer.await.log_err() == Some(1) {
 2274                        return anyhow::Ok(false);
 2275                    } else {
 2276                        active_call
 2277                            .update(cx, |call, cx| call.hang_up(cx))?
 2278                            .await
 2279                            .log_err();
 2280                    }
 2281                }
 2282            }
 2283
 2284            let save_result = this
 2285                .update_in(cx, |this, window, cx| {
 2286                    this.save_all_internal(SaveIntent::Close, window, cx)
 2287                })?
 2288                .await;
 2289
 2290            // If we're not quitting, but closing, we remove the workspace from
 2291            // the current session.
 2292            if close_intent != CloseIntent::Quit
 2293                && !save_last_workspace
 2294                && save_result.as_ref().map_or(false, |&res| res)
 2295            {
 2296                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))?
 2297                    .await;
 2298            }
 2299
 2300            save_result
 2301        })
 2302    }
 2303
 2304    fn save_all(&mut self, action: &SaveAll, window: &mut Window, cx: &mut Context<Self>) {
 2305        self.save_all_internal(
 2306            action.save_intent.unwrap_or(SaveIntent::SaveAll),
 2307            window,
 2308            cx,
 2309        )
 2310        .detach_and_log_err(cx);
 2311    }
 2312
 2313    fn send_keystrokes(
 2314        &mut self,
 2315        action: &SendKeystrokes,
 2316        window: &mut Window,
 2317        cx: &mut Context<Self>,
 2318    ) {
 2319        let keystrokes: Vec<Keystroke> = action
 2320            .0
 2321            .split(' ')
 2322            .flat_map(|k| Keystroke::parse(k).log_err())
 2323            .collect();
 2324        let _ = self.send_keystrokes_impl(keystrokes, window, cx);
 2325    }
 2326
 2327    pub fn send_keystrokes_impl(
 2328        &mut self,
 2329        keystrokes: Vec<Keystroke>,
 2330        window: &mut Window,
 2331        cx: &mut Context<Self>,
 2332    ) -> Shared<Task<()>> {
 2333        let mut state = self.dispatching_keystrokes.borrow_mut();
 2334        if !state.dispatched.insert(keystrokes.clone()) {
 2335            cx.propagate();
 2336            return state.task.clone().unwrap();
 2337        }
 2338
 2339        state.queue.extend(keystrokes);
 2340
 2341        let keystrokes = self.dispatching_keystrokes.clone();
 2342        if state.task.is_none() {
 2343            state.task = Some(
 2344                window
 2345                    .spawn(cx, async move |cx| {
 2346                        // limit to 100 keystrokes to avoid infinite recursion.
 2347                        for _ in 0..100 {
 2348                            let mut state = keystrokes.borrow_mut();
 2349                            let Some(keystroke) = state.queue.pop_front() else {
 2350                                state.dispatched.clear();
 2351                                state.task.take();
 2352                                return;
 2353                            };
 2354                            drop(state);
 2355                            cx.update(|window, cx| {
 2356                                let focused = window.focused(cx);
 2357                                window.dispatch_keystroke(keystroke.clone(), cx);
 2358                                if window.focused(cx) != focused {
 2359                                    // dispatch_keystroke may cause the focus to change.
 2360                                    // draw's side effect is to schedule the FocusChanged events in the current flush effect cycle
 2361                                    // And we need that to happen before the next keystroke to keep vim mode happy...
 2362                                    // (Note that the tests always do this implicitly, so you must manually test with something like:
 2363                                    //   "bindings": { "g z": ["workspace::SendKeystrokes", ": j <enter> u"]}
 2364                                    // )
 2365                                    window.draw(cx).clear();
 2366                                }
 2367                            })
 2368                            .ok();
 2369                        }
 2370
 2371                        *keystrokes.borrow_mut() = Default::default();
 2372                        log::error!("over 100 keystrokes passed to send_keystrokes");
 2373                    })
 2374                    .shared(),
 2375            );
 2376        }
 2377        state.task.clone().unwrap()
 2378    }
 2379
 2380    fn save_all_internal(
 2381        &mut self,
 2382        mut save_intent: SaveIntent,
 2383        window: &mut Window,
 2384        cx: &mut Context<Self>,
 2385    ) -> Task<Result<bool>> {
 2386        if self.project.read(cx).is_disconnected(cx) {
 2387            return Task::ready(Ok(true));
 2388        }
 2389        let dirty_items = self
 2390            .panes
 2391            .iter()
 2392            .flat_map(|pane| {
 2393                pane.read(cx).items().filter_map(|item| {
 2394                    if item.is_dirty(cx) {
 2395                        item.tab_content_text(0, cx);
 2396                        Some((pane.downgrade(), item.boxed_clone()))
 2397                    } else {
 2398                        None
 2399                    }
 2400                })
 2401            })
 2402            .collect::<Vec<_>>();
 2403
 2404        let project = self.project.clone();
 2405        cx.spawn_in(window, async move |workspace, cx| {
 2406            let dirty_items = if save_intent == SaveIntent::Close && !dirty_items.is_empty() {
 2407                let (serialize_tasks, remaining_dirty_items) =
 2408                    workspace.update_in(cx, |workspace, window, cx| {
 2409                        let mut remaining_dirty_items = Vec::new();
 2410                        let mut serialize_tasks = Vec::new();
 2411                        for (pane, item) in dirty_items {
 2412                            if let Some(task) = item
 2413                                .to_serializable_item_handle(cx)
 2414                                .and_then(|handle| handle.serialize(workspace, true, window, cx))
 2415                            {
 2416                                serialize_tasks.push(task);
 2417                            } else {
 2418                                remaining_dirty_items.push((pane, item));
 2419                            }
 2420                        }
 2421                        (serialize_tasks, remaining_dirty_items)
 2422                    })?;
 2423
 2424                futures::future::try_join_all(serialize_tasks).await?;
 2425
 2426                if remaining_dirty_items.len() > 1 {
 2427                    let answer = workspace.update_in(cx, |_, window, cx| {
 2428                        let detail = Pane::file_names_for_prompt(
 2429                            &mut remaining_dirty_items.iter().map(|(_, handle)| handle),
 2430                            cx,
 2431                        );
 2432                        window.prompt(
 2433                            PromptLevel::Warning,
 2434                            &"Do you want to save all changes in the following files?",
 2435                            Some(&detail),
 2436                            &["Save all", "Discard all", "Cancel"],
 2437                            cx,
 2438                        )
 2439                    })?;
 2440                    match answer.await.log_err() {
 2441                        Some(0) => save_intent = SaveIntent::SaveAll,
 2442                        Some(1) => save_intent = SaveIntent::Skip,
 2443                        Some(2) => return Ok(false),
 2444                        _ => {}
 2445                    }
 2446                }
 2447
 2448                remaining_dirty_items
 2449            } else {
 2450                dirty_items
 2451            };
 2452
 2453            for (pane, item) in dirty_items {
 2454                let (singleton, project_entry_ids) =
 2455                    cx.update(|_, cx| (item.is_singleton(cx), item.project_entry_ids(cx)))?;
 2456                if singleton || !project_entry_ids.is_empty() {
 2457                    if !Pane::save_item(project.clone(), &pane, &*item, save_intent, cx).await? {
 2458                        return Ok(false);
 2459                    }
 2460                }
 2461            }
 2462            Ok(true)
 2463        })
 2464    }
 2465
 2466    pub fn open_workspace_for_paths(
 2467        &mut self,
 2468        replace_current_window: bool,
 2469        paths: Vec<PathBuf>,
 2470        window: &mut Window,
 2471        cx: &mut Context<Self>,
 2472    ) -> Task<Result<()>> {
 2473        let window_handle = window.window_handle().downcast::<Self>();
 2474        let is_remote = self.project.read(cx).is_via_collab();
 2475        let has_worktree = self.project.read(cx).worktrees(cx).next().is_some();
 2476        let has_dirty_items = self.items(cx).any(|item| item.is_dirty(cx));
 2477
 2478        let window_to_replace = if replace_current_window {
 2479            window_handle
 2480        } else if is_remote || has_worktree || has_dirty_items {
 2481            None
 2482        } else {
 2483            window_handle
 2484        };
 2485        let app_state = self.app_state.clone();
 2486
 2487        cx.spawn(async move |_, cx| {
 2488            cx.update(|cx| {
 2489                open_paths(
 2490                    &paths,
 2491                    app_state,
 2492                    OpenOptions {
 2493                        replace_window: window_to_replace,
 2494                        ..Default::default()
 2495                    },
 2496                    cx,
 2497                )
 2498            })?
 2499            .await?;
 2500            Ok(())
 2501        })
 2502    }
 2503
 2504    #[allow(clippy::type_complexity)]
 2505    pub fn open_paths(
 2506        &mut self,
 2507        mut abs_paths: Vec<PathBuf>,
 2508        options: OpenOptions,
 2509        pane: Option<WeakEntity<Pane>>,
 2510        window: &mut Window,
 2511        cx: &mut Context<Self>,
 2512    ) -> Task<Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>> {
 2513        log::info!("open paths {abs_paths:?}");
 2514
 2515        let fs = self.app_state.fs.clone();
 2516
 2517        // Sort the paths to ensure we add worktrees for parents before their children.
 2518        abs_paths.sort_unstable();
 2519        cx.spawn_in(window, async move |this, cx| {
 2520            let mut tasks = Vec::with_capacity(abs_paths.len());
 2521
 2522            for abs_path in &abs_paths {
 2523                let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
 2524                    OpenVisible::All => Some(true),
 2525                    OpenVisible::None => Some(false),
 2526                    OpenVisible::OnlyFiles => match fs.metadata(abs_path).await.log_err() {
 2527                        Some(Some(metadata)) => Some(!metadata.is_dir),
 2528                        Some(None) => Some(true),
 2529                        None => None,
 2530                    },
 2531                    OpenVisible::OnlyDirectories => match fs.metadata(abs_path).await.log_err() {
 2532                        Some(Some(metadata)) => Some(metadata.is_dir),
 2533                        Some(None) => Some(false),
 2534                        None => None,
 2535                    },
 2536                };
 2537                let project_path = match visible {
 2538                    Some(visible) => match this
 2539                        .update(cx, |this, cx| {
 2540                            Workspace::project_path_for_path(
 2541                                this.project.clone(),
 2542                                abs_path,
 2543                                visible,
 2544                                cx,
 2545                            )
 2546                        })
 2547                        .log_err()
 2548                    {
 2549                        Some(project_path) => project_path.await.log_err(),
 2550                        None => None,
 2551                    },
 2552                    None => None,
 2553                };
 2554
 2555                let this = this.clone();
 2556                let abs_path: Arc<Path> = SanitizedPath::from(abs_path.clone()).into();
 2557                let fs = fs.clone();
 2558                let pane = pane.clone();
 2559                let task = cx.spawn(async move |cx| {
 2560                    let (worktree, project_path) = project_path?;
 2561                    if fs.is_dir(&abs_path).await {
 2562                        this.update(cx, |workspace, cx| {
 2563                            let worktree = worktree.read(cx);
 2564                            let worktree_abs_path = worktree.abs_path();
 2565                            let entry_id = if abs_path.as_ref() == worktree_abs_path.as_ref() {
 2566                                worktree.root_entry()
 2567                            } else {
 2568                                abs_path
 2569                                    .strip_prefix(worktree_abs_path.as_ref())
 2570                                    .ok()
 2571                                    .and_then(|relative_path| {
 2572                                        worktree.entry_for_path(relative_path)
 2573                                    })
 2574                            }
 2575                            .map(|entry| entry.id);
 2576                            if let Some(entry_id) = entry_id {
 2577                                workspace.project.update(cx, |_, cx| {
 2578                                    cx.emit(project::Event::ActiveEntryChanged(Some(entry_id)));
 2579                                })
 2580                            }
 2581                        })
 2582                        .ok()?;
 2583                        None
 2584                    } else {
 2585                        Some(
 2586                            this.update_in(cx, |this, window, cx| {
 2587                                this.open_path(
 2588                                    project_path,
 2589                                    pane,
 2590                                    options.focus.unwrap_or(true),
 2591                                    window,
 2592                                    cx,
 2593                                )
 2594                            })
 2595                            .ok()?
 2596                            .await,
 2597                        )
 2598                    }
 2599                });
 2600                tasks.push(task);
 2601            }
 2602
 2603            futures::future::join_all(tasks).await
 2604        })
 2605    }
 2606
 2607    pub fn open_resolved_path(
 2608        &mut self,
 2609        path: ResolvedPath,
 2610        window: &mut Window,
 2611        cx: &mut Context<Self>,
 2612    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 2613        match path {
 2614            ResolvedPath::ProjectPath { project_path, .. } => {
 2615                self.open_path(project_path, None, true, window, cx)
 2616            }
 2617            ResolvedPath::AbsPath { path, .. } => self.open_abs_path(
 2618                path,
 2619                OpenOptions {
 2620                    visible: Some(OpenVisible::None),
 2621                    ..Default::default()
 2622                },
 2623                window,
 2624                cx,
 2625            ),
 2626        }
 2627    }
 2628
 2629    pub fn absolute_path_of_worktree(
 2630        &self,
 2631        worktree_id: WorktreeId,
 2632        cx: &mut Context<Self>,
 2633    ) -> Option<PathBuf> {
 2634        self.project
 2635            .read(cx)
 2636            .worktree_for_id(worktree_id, cx)
 2637            // TODO: use `abs_path` or `root_dir`
 2638            .map(|wt| wt.read(cx).abs_path().as_ref().to_path_buf())
 2639    }
 2640
 2641    fn add_folder_to_project(
 2642        &mut self,
 2643        _: &AddFolderToProject,
 2644        window: &mut Window,
 2645        cx: &mut Context<Self>,
 2646    ) {
 2647        let project = self.project.read(cx);
 2648        if project.is_via_collab() {
 2649            self.show_error(
 2650                &anyhow!("You cannot add folders to someone else's project"),
 2651                cx,
 2652            );
 2653            return;
 2654        }
 2655        let paths = self.prompt_for_open_path(
 2656            PathPromptOptions {
 2657                files: false,
 2658                directories: true,
 2659                multiple: true,
 2660            },
 2661            DirectoryLister::Project(self.project.clone()),
 2662            window,
 2663            cx,
 2664        );
 2665        cx.spawn_in(window, async move |this, cx| {
 2666            if let Some(paths) = paths.await.log_err().flatten() {
 2667                let results = this
 2668                    .update_in(cx, |this, window, cx| {
 2669                        this.open_paths(
 2670                            paths,
 2671                            OpenOptions {
 2672                                visible: Some(OpenVisible::All),
 2673                                ..Default::default()
 2674                            },
 2675                            None,
 2676                            window,
 2677                            cx,
 2678                        )
 2679                    })?
 2680                    .await;
 2681                for result in results.into_iter().flatten() {
 2682                    result.log_err();
 2683                }
 2684            }
 2685            anyhow::Ok(())
 2686        })
 2687        .detach_and_log_err(cx);
 2688    }
 2689
 2690    pub fn project_path_for_path(
 2691        project: Entity<Project>,
 2692        abs_path: &Path,
 2693        visible: bool,
 2694        cx: &mut App,
 2695    ) -> Task<Result<(Entity<Worktree>, ProjectPath)>> {
 2696        let entry = project.update(cx, |project, cx| {
 2697            project.find_or_create_worktree(abs_path, visible, cx)
 2698        });
 2699        cx.spawn(async move |cx| {
 2700            let (worktree, path) = entry.await?;
 2701            let worktree_id = worktree.read_with(cx, |t, _| t.id())?;
 2702            Ok((
 2703                worktree,
 2704                ProjectPath {
 2705                    worktree_id,
 2706                    path: path.into(),
 2707                },
 2708            ))
 2709        })
 2710    }
 2711
 2712    pub fn items<'a>(&'a self, cx: &'a App) -> impl 'a + Iterator<Item = &'a Box<dyn ItemHandle>> {
 2713        self.panes.iter().flat_map(|pane| pane.read(cx).items())
 2714    }
 2715
 2716    pub fn item_of_type<T: Item>(&self, cx: &App) -> Option<Entity<T>> {
 2717        self.items_of_type(cx).max_by_key(|item| item.item_id())
 2718    }
 2719
 2720    pub fn items_of_type<'a, T: Item>(
 2721        &'a self,
 2722        cx: &'a App,
 2723    ) -> impl 'a + Iterator<Item = Entity<T>> {
 2724        self.panes
 2725            .iter()
 2726            .flat_map(|pane| pane.read(cx).items_of_type())
 2727    }
 2728
 2729    pub fn active_item(&self, cx: &App) -> Option<Box<dyn ItemHandle>> {
 2730        self.active_pane().read(cx).active_item()
 2731    }
 2732
 2733    pub fn active_item_as<I: 'static>(&self, cx: &App) -> Option<Entity<I>> {
 2734        let item = self.active_item(cx)?;
 2735        item.to_any().downcast::<I>().ok()
 2736    }
 2737
 2738    fn active_project_path(&self, cx: &App) -> Option<ProjectPath> {
 2739        self.active_item(cx).and_then(|item| item.project_path(cx))
 2740    }
 2741
 2742    pub fn most_recent_active_path(&self, cx: &App) -> Option<PathBuf> {
 2743        self.recent_navigation_history_iter(cx)
 2744            .filter_map(|(path, abs_path)| {
 2745                let worktree = self
 2746                    .project
 2747                    .read(cx)
 2748                    .worktree_for_id(path.worktree_id, cx)?;
 2749                if worktree.read(cx).is_visible() {
 2750                    abs_path
 2751                } else {
 2752                    None
 2753                }
 2754            })
 2755            .next()
 2756    }
 2757
 2758    pub fn save_active_item(
 2759        &mut self,
 2760        save_intent: SaveIntent,
 2761        window: &mut Window,
 2762        cx: &mut App,
 2763    ) -> Task<Result<()>> {
 2764        let project = self.project.clone();
 2765        let pane = self.active_pane();
 2766        let item = pane.read(cx).active_item();
 2767        let pane = pane.downgrade();
 2768
 2769        window.spawn(cx, async move |mut cx| {
 2770            if let Some(item) = item {
 2771                Pane::save_item(project, &pane, item.as_ref(), save_intent, &mut cx)
 2772                    .await
 2773                    .map(|_| ())
 2774            } else {
 2775                Ok(())
 2776            }
 2777        })
 2778    }
 2779
 2780    pub fn close_inactive_items_and_panes(
 2781        &mut self,
 2782        action: &CloseInactiveTabsAndPanes,
 2783        window: &mut Window,
 2784        cx: &mut Context<Self>,
 2785    ) {
 2786        if let Some(task) = self.close_all_internal(
 2787            true,
 2788            action.save_intent.unwrap_or(SaveIntent::Close),
 2789            window,
 2790            cx,
 2791        ) {
 2792            task.detach_and_log_err(cx)
 2793        }
 2794    }
 2795
 2796    pub fn close_all_items_and_panes(
 2797        &mut self,
 2798        action: &CloseAllItemsAndPanes,
 2799        window: &mut Window,
 2800        cx: &mut Context<Self>,
 2801    ) {
 2802        if let Some(task) = self.close_all_internal(
 2803            false,
 2804            action.save_intent.unwrap_or(SaveIntent::Close),
 2805            window,
 2806            cx,
 2807        ) {
 2808            task.detach_and_log_err(cx)
 2809        }
 2810    }
 2811
 2812    fn close_all_internal(
 2813        &mut self,
 2814        retain_active_pane: bool,
 2815        save_intent: SaveIntent,
 2816        window: &mut Window,
 2817        cx: &mut Context<Self>,
 2818    ) -> Option<Task<Result<()>>> {
 2819        let current_pane = self.active_pane();
 2820
 2821        let mut tasks = Vec::new();
 2822
 2823        if retain_active_pane {
 2824            let current_pane_close = current_pane.update(cx, |pane, cx| {
 2825                pane.close_other_items(
 2826                    &CloseOtherItems {
 2827                        save_intent: None,
 2828                        close_pinned: false,
 2829                    },
 2830                    None,
 2831                    window,
 2832                    cx,
 2833                )
 2834            });
 2835
 2836            tasks.push(current_pane_close);
 2837        }
 2838
 2839        for pane in self.panes() {
 2840            if retain_active_pane && pane.entity_id() == current_pane.entity_id() {
 2841                continue;
 2842            }
 2843
 2844            let close_pane_items = pane.update(cx, |pane: &mut Pane, cx| {
 2845                pane.close_all_items(
 2846                    &CloseAllItems {
 2847                        save_intent: Some(save_intent),
 2848                        close_pinned: false,
 2849                    },
 2850                    window,
 2851                    cx,
 2852                )
 2853            });
 2854
 2855            tasks.push(close_pane_items)
 2856        }
 2857
 2858        if tasks.is_empty() {
 2859            None
 2860        } else {
 2861            Some(cx.spawn_in(window, async move |_, _| {
 2862                for task in tasks {
 2863                    task.await?
 2864                }
 2865                Ok(())
 2866            }))
 2867        }
 2868    }
 2869
 2870    pub fn is_dock_at_position_open(&self, position: DockPosition, cx: &mut Context<Self>) -> bool {
 2871        self.dock_at_position(position).read(cx).is_open()
 2872    }
 2873
 2874    pub fn toggle_dock(
 2875        &mut self,
 2876        dock_side: DockPosition,
 2877        window: &mut Window,
 2878        cx: &mut Context<Self>,
 2879    ) {
 2880        let dock = self.dock_at_position(dock_side);
 2881        let mut focus_center = false;
 2882        let mut reveal_dock = false;
 2883        dock.update(cx, |dock, cx| {
 2884            let other_is_zoomed = self.zoomed.is_some() && self.zoomed_position != Some(dock_side);
 2885            let was_visible = dock.is_open() && !other_is_zoomed;
 2886            dock.set_open(!was_visible, window, cx);
 2887
 2888            if dock.active_panel().is_none() {
 2889                let Some(panel_ix) = dock
 2890                    .first_enabled_panel_idx(cx)
 2891                    .log_with_level(log::Level::Info)
 2892                else {
 2893                    return;
 2894                };
 2895                dock.activate_panel(panel_ix, window, cx);
 2896            }
 2897
 2898            if let Some(active_panel) = dock.active_panel() {
 2899                if was_visible {
 2900                    if active_panel
 2901                        .panel_focus_handle(cx)
 2902                        .contains_focused(window, cx)
 2903                    {
 2904                        focus_center = true;
 2905                    }
 2906                } else {
 2907                    let focus_handle = &active_panel.panel_focus_handle(cx);
 2908                    window.focus(focus_handle);
 2909                    reveal_dock = true;
 2910                }
 2911            }
 2912        });
 2913
 2914        if reveal_dock {
 2915            self.dismiss_zoomed_items_to_reveal(Some(dock_side), window, cx);
 2916        }
 2917
 2918        if focus_center {
 2919            self.active_pane
 2920                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 2921        }
 2922
 2923        cx.notify();
 2924        self.serialize_workspace(window, cx);
 2925    }
 2926
 2927    fn active_dock(&self, window: &Window, cx: &Context<Self>) -> Option<&Entity<Dock>> {
 2928        self.all_docks().into_iter().find(|&dock| {
 2929            dock.read(cx).is_open() && dock.focus_handle(cx).contains_focused(window, cx)
 2930        })
 2931    }
 2932
 2933    fn close_active_dock(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
 2934        if let Some(dock) = self.active_dock(window, cx) {
 2935            dock.update(cx, |dock, cx| {
 2936                dock.set_open(false, window, cx);
 2937            });
 2938            return true;
 2939        }
 2940        false
 2941    }
 2942
 2943    pub fn close_all_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 2944        for dock in self.all_docks() {
 2945            dock.update(cx, |dock, cx| {
 2946                dock.set_open(false, window, cx);
 2947            });
 2948        }
 2949
 2950        cx.focus_self(window);
 2951        cx.notify();
 2952        self.serialize_workspace(window, cx);
 2953    }
 2954
 2955    /// Transfer focus to the panel of the given type.
 2956    pub fn focus_panel<T: Panel>(
 2957        &mut self,
 2958        window: &mut Window,
 2959        cx: &mut Context<Self>,
 2960    ) -> Option<Entity<T>> {
 2961        let panel = self.focus_or_unfocus_panel::<T>(window, cx, |_, _, _| true)?;
 2962        panel.to_any().downcast().ok()
 2963    }
 2964
 2965    /// Focus the panel of the given type if it isn't already focused. If it is
 2966    /// already focused, then transfer focus back to the workspace center.
 2967    pub fn toggle_panel_focus<T: Panel>(
 2968        &mut self,
 2969        window: &mut Window,
 2970        cx: &mut Context<Self>,
 2971    ) -> bool {
 2972        let mut did_focus_panel = false;
 2973        self.focus_or_unfocus_panel::<T>(window, cx, |panel, window, cx| {
 2974            did_focus_panel = !panel.panel_focus_handle(cx).contains_focused(window, cx);
 2975            did_focus_panel
 2976        });
 2977        did_focus_panel
 2978    }
 2979
 2980    pub fn activate_panel_for_proto_id(
 2981        &mut self,
 2982        panel_id: PanelId,
 2983        window: &mut Window,
 2984        cx: &mut Context<Self>,
 2985    ) -> Option<Arc<dyn PanelHandle>> {
 2986        let mut panel = None;
 2987        for dock in self.all_docks() {
 2988            if let Some(panel_index) = dock.read(cx).panel_index_for_proto_id(panel_id) {
 2989                panel = dock.update(cx, |dock, cx| {
 2990                    dock.activate_panel(panel_index, window, cx);
 2991                    dock.set_open(true, window, cx);
 2992                    dock.active_panel().cloned()
 2993                });
 2994                break;
 2995            }
 2996        }
 2997
 2998        if panel.is_some() {
 2999            cx.notify();
 3000            self.serialize_workspace(window, cx);
 3001        }
 3002
 3003        panel
 3004    }
 3005
 3006    /// Focus or unfocus the given panel type, depending on the given callback.
 3007    fn focus_or_unfocus_panel<T: Panel>(
 3008        &mut self,
 3009        window: &mut Window,
 3010        cx: &mut Context<Self>,
 3011        mut should_focus: impl FnMut(&dyn PanelHandle, &mut Window, &mut Context<Dock>) -> bool,
 3012    ) -> Option<Arc<dyn PanelHandle>> {
 3013        let mut result_panel = None;
 3014        let mut serialize = false;
 3015        for dock in self.all_docks() {
 3016            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3017                let mut focus_center = false;
 3018                let panel = dock.update(cx, |dock, cx| {
 3019                    dock.activate_panel(panel_index, window, cx);
 3020
 3021                    let panel = dock.active_panel().cloned();
 3022                    if let Some(panel) = panel.as_ref() {
 3023                        if should_focus(&**panel, window, cx) {
 3024                            dock.set_open(true, window, cx);
 3025                            panel.panel_focus_handle(cx).focus(window);
 3026                        } else {
 3027                            focus_center = true;
 3028                        }
 3029                    }
 3030                    panel
 3031                });
 3032
 3033                if focus_center {
 3034                    self.active_pane
 3035                        .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3036                }
 3037
 3038                result_panel = panel;
 3039                serialize = true;
 3040                break;
 3041            }
 3042        }
 3043
 3044        if serialize {
 3045            self.serialize_workspace(window, cx);
 3046        }
 3047
 3048        cx.notify();
 3049        result_panel
 3050    }
 3051
 3052    /// Open the panel of the given type
 3053    pub fn open_panel<T: Panel>(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3054        for dock in self.all_docks() {
 3055            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3056                dock.update(cx, |dock, cx| {
 3057                    dock.activate_panel(panel_index, window, cx);
 3058                    dock.set_open(true, window, cx);
 3059                });
 3060            }
 3061        }
 3062    }
 3063
 3064    pub fn panel<T: Panel>(&self, cx: &App) -> Option<Entity<T>> {
 3065        self.all_docks()
 3066            .iter()
 3067            .find_map(|dock| dock.read(cx).panel::<T>())
 3068    }
 3069
 3070    fn dismiss_zoomed_items_to_reveal(
 3071        &mut self,
 3072        dock_to_reveal: Option<DockPosition>,
 3073        window: &mut Window,
 3074        cx: &mut Context<Self>,
 3075    ) {
 3076        // If a center pane is zoomed, unzoom it.
 3077        for pane in &self.panes {
 3078            if pane != &self.active_pane || dock_to_reveal.is_some() {
 3079                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 3080            }
 3081        }
 3082
 3083        // If another dock is zoomed, hide it.
 3084        let mut focus_center = false;
 3085        for dock in self.all_docks() {
 3086            dock.update(cx, |dock, cx| {
 3087                if Some(dock.position()) != dock_to_reveal {
 3088                    if let Some(panel) = dock.active_panel() {
 3089                        if panel.is_zoomed(window, cx) {
 3090                            focus_center |=
 3091                                panel.panel_focus_handle(cx).contains_focused(window, cx);
 3092                            dock.set_open(false, window, cx);
 3093                        }
 3094                    }
 3095                }
 3096            });
 3097        }
 3098
 3099        if focus_center {
 3100            self.active_pane
 3101                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3102        }
 3103
 3104        if self.zoomed_position != dock_to_reveal {
 3105            self.zoomed = None;
 3106            self.zoomed_position = None;
 3107            cx.emit(Event::ZoomChanged);
 3108        }
 3109
 3110        cx.notify();
 3111    }
 3112
 3113    fn add_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 3114        let pane = cx.new(|cx| {
 3115            let mut pane = Pane::new(
 3116                self.weak_handle(),
 3117                self.project.clone(),
 3118                self.pane_history_timestamp.clone(),
 3119                None,
 3120                NewFile.boxed_clone(),
 3121                window,
 3122                cx,
 3123            );
 3124            pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 3125            pane
 3126        });
 3127        cx.subscribe_in(&pane, window, Self::handle_pane_event)
 3128            .detach();
 3129        self.panes.push(pane.clone());
 3130
 3131        window.focus(&pane.focus_handle(cx));
 3132
 3133        cx.emit(Event::PaneAdded(pane.clone()));
 3134        pane
 3135    }
 3136
 3137    pub fn add_item_to_center(
 3138        &mut self,
 3139        item: Box<dyn ItemHandle>,
 3140        window: &mut Window,
 3141        cx: &mut Context<Self>,
 3142    ) -> bool {
 3143        if let Some(center_pane) = self.last_active_center_pane.clone() {
 3144            if let Some(center_pane) = center_pane.upgrade() {
 3145                center_pane.update(cx, |pane, cx| {
 3146                    pane.add_item(item, true, true, None, window, cx)
 3147                });
 3148                true
 3149            } else {
 3150                false
 3151            }
 3152        } else {
 3153            false
 3154        }
 3155    }
 3156
 3157    pub fn add_item_to_active_pane(
 3158        &mut self,
 3159        item: Box<dyn ItemHandle>,
 3160        destination_index: Option<usize>,
 3161        focus_item: bool,
 3162        window: &mut Window,
 3163        cx: &mut App,
 3164    ) {
 3165        self.add_item(
 3166            self.active_pane.clone(),
 3167            item,
 3168            destination_index,
 3169            false,
 3170            focus_item,
 3171            window,
 3172            cx,
 3173        )
 3174    }
 3175
 3176    pub fn add_item(
 3177        &mut self,
 3178        pane: Entity<Pane>,
 3179        item: Box<dyn ItemHandle>,
 3180        destination_index: Option<usize>,
 3181        activate_pane: bool,
 3182        focus_item: bool,
 3183        window: &mut Window,
 3184        cx: &mut App,
 3185    ) {
 3186        if let Some(text) = item.telemetry_event_text(cx) {
 3187            telemetry::event!(text);
 3188        }
 3189
 3190        pane.update(cx, |pane, cx| {
 3191            pane.add_item(
 3192                item,
 3193                activate_pane,
 3194                focus_item,
 3195                destination_index,
 3196                window,
 3197                cx,
 3198            )
 3199        });
 3200    }
 3201
 3202    pub fn split_item(
 3203        &mut self,
 3204        split_direction: SplitDirection,
 3205        item: Box<dyn ItemHandle>,
 3206        window: &mut Window,
 3207        cx: &mut Context<Self>,
 3208    ) {
 3209        let new_pane = self.split_pane(self.active_pane.clone(), split_direction, window, cx);
 3210        self.add_item(new_pane, item, None, true, true, window, cx);
 3211    }
 3212
 3213    pub fn open_abs_path(
 3214        &mut self,
 3215        abs_path: PathBuf,
 3216        options: OpenOptions,
 3217        window: &mut Window,
 3218        cx: &mut Context<Self>,
 3219    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3220        cx.spawn_in(window, async move |workspace, cx| {
 3221            let open_paths_task_result = workspace
 3222                .update_in(cx, |workspace, window, cx| {
 3223                    workspace.open_paths(vec![abs_path.clone()], options, None, window, cx)
 3224                })
 3225                .with_context(|| format!("open abs path {abs_path:?} task spawn"))?
 3226                .await;
 3227            anyhow::ensure!(
 3228                open_paths_task_result.len() == 1,
 3229                "open abs path {abs_path:?} task returned incorrect number of results"
 3230            );
 3231            match open_paths_task_result
 3232                .into_iter()
 3233                .next()
 3234                .expect("ensured single task result")
 3235            {
 3236                Some(open_result) => {
 3237                    open_result.with_context(|| format!("open abs path {abs_path:?} task join"))
 3238                }
 3239                None => anyhow::bail!("open abs path {abs_path:?} task returned None"),
 3240            }
 3241        })
 3242    }
 3243
 3244    pub fn split_abs_path(
 3245        &mut self,
 3246        abs_path: PathBuf,
 3247        visible: bool,
 3248        window: &mut Window,
 3249        cx: &mut Context<Self>,
 3250    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3251        let project_path_task =
 3252            Workspace::project_path_for_path(self.project.clone(), &abs_path, visible, cx);
 3253        cx.spawn_in(window, async move |this, cx| {
 3254            let (_, path) = project_path_task.await?;
 3255            this.update_in(cx, |this, window, cx| this.split_path(path, window, cx))?
 3256                .await
 3257        })
 3258    }
 3259
 3260    pub fn open_path(
 3261        &mut self,
 3262        path: impl Into<ProjectPath>,
 3263        pane: Option<WeakEntity<Pane>>,
 3264        focus_item: bool,
 3265        window: &mut Window,
 3266        cx: &mut App,
 3267    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3268        self.open_path_preview(path, pane, focus_item, false, true, window, cx)
 3269    }
 3270
 3271    pub fn open_path_preview(
 3272        &mut self,
 3273        path: impl Into<ProjectPath>,
 3274        pane: Option<WeakEntity<Pane>>,
 3275        focus_item: bool,
 3276        allow_preview: bool,
 3277        activate: bool,
 3278        window: &mut Window,
 3279        cx: &mut App,
 3280    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3281        let pane = pane.unwrap_or_else(|| {
 3282            self.last_active_center_pane.clone().unwrap_or_else(|| {
 3283                self.panes
 3284                    .first()
 3285                    .expect("There must be an active pane")
 3286                    .downgrade()
 3287            })
 3288        });
 3289
 3290        let project_path = path.into();
 3291        let task = self.load_path(project_path.clone(), window, cx);
 3292        window.spawn(cx, async move |cx| {
 3293            let (project_entry_id, build_item) = task.await?;
 3294            let result = pane.update_in(cx, |pane, window, cx| {
 3295                pane.open_item(
 3296                    project_entry_id,
 3297                    project_path,
 3298                    focus_item,
 3299                    allow_preview,
 3300                    activate,
 3301                    None,
 3302                    window,
 3303                    cx,
 3304                    build_item,
 3305                )
 3306            });
 3307            result
 3308        })
 3309    }
 3310
 3311    pub fn split_path(
 3312        &mut self,
 3313        path: impl Into<ProjectPath>,
 3314        window: &mut Window,
 3315        cx: &mut Context<Self>,
 3316    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3317        self.split_path_preview(path, false, None, window, cx)
 3318    }
 3319
 3320    pub fn split_path_preview(
 3321        &mut self,
 3322        path: impl Into<ProjectPath>,
 3323        allow_preview: bool,
 3324        split_direction: Option<SplitDirection>,
 3325        window: &mut Window,
 3326        cx: &mut Context<Self>,
 3327    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3328        let pane = self.last_active_center_pane.clone().unwrap_or_else(|| {
 3329            self.panes
 3330                .first()
 3331                .expect("There must be an active pane")
 3332                .downgrade()
 3333        });
 3334
 3335        if let Member::Pane(center_pane) = &self.center.root {
 3336            if center_pane.read(cx).items_len() == 0 {
 3337                return self.open_path(path, Some(pane), true, window, cx);
 3338            }
 3339        }
 3340
 3341        let project_path = path.into();
 3342        let task = self.load_path(project_path.clone(), window, cx);
 3343        cx.spawn_in(window, async move |this, cx| {
 3344            let (project_entry_id, build_item) = task.await?;
 3345            this.update_in(cx, move |this, window, cx| -> Option<_> {
 3346                let pane = pane.upgrade()?;
 3347                let new_pane = this.split_pane(
 3348                    pane,
 3349                    split_direction.unwrap_or(SplitDirection::Right),
 3350                    window,
 3351                    cx,
 3352                );
 3353                new_pane.update(cx, |new_pane, cx| {
 3354                    Some(new_pane.open_item(
 3355                        project_entry_id,
 3356                        project_path,
 3357                        true,
 3358                        allow_preview,
 3359                        true,
 3360                        None,
 3361                        window,
 3362                        cx,
 3363                        build_item,
 3364                    ))
 3365                })
 3366            })
 3367            .map(|option| option.context("pane was dropped"))?
 3368        })
 3369    }
 3370
 3371    fn load_path(
 3372        &mut self,
 3373        path: ProjectPath,
 3374        window: &mut Window,
 3375        cx: &mut App,
 3376    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
 3377        let project = self.project().clone();
 3378        let registry = cx.default_global::<ProjectItemRegistry>().clone();
 3379        registry.open_path(&project, &path, window, cx)
 3380    }
 3381
 3382    pub fn find_project_item<T>(
 3383        &self,
 3384        pane: &Entity<Pane>,
 3385        project_item: &Entity<T::Item>,
 3386        cx: &App,
 3387    ) -> Option<Entity<T>>
 3388    where
 3389        T: ProjectItem,
 3390    {
 3391        use project::ProjectItem as _;
 3392        let project_item = project_item.read(cx);
 3393        let entry_id = project_item.entry_id(cx);
 3394        let project_path = project_item.project_path(cx);
 3395
 3396        let mut item = None;
 3397        if let Some(entry_id) = entry_id {
 3398            item = pane.read(cx).item_for_entry(entry_id, cx);
 3399        }
 3400        if item.is_none() {
 3401            if let Some(project_path) = project_path {
 3402                item = pane.read(cx).item_for_path(project_path, cx);
 3403            }
 3404        }
 3405
 3406        item.and_then(|item| item.downcast::<T>())
 3407    }
 3408
 3409    pub fn is_project_item_open<T>(
 3410        &self,
 3411        pane: &Entity<Pane>,
 3412        project_item: &Entity<T::Item>,
 3413        cx: &App,
 3414    ) -> bool
 3415    where
 3416        T: ProjectItem,
 3417    {
 3418        self.find_project_item::<T>(pane, project_item, cx)
 3419            .is_some()
 3420    }
 3421
 3422    pub fn open_project_item<T>(
 3423        &mut self,
 3424        pane: Entity<Pane>,
 3425        project_item: Entity<T::Item>,
 3426        activate_pane: bool,
 3427        focus_item: bool,
 3428        window: &mut Window,
 3429        cx: &mut Context<Self>,
 3430    ) -> Entity<T>
 3431    where
 3432        T: ProjectItem,
 3433    {
 3434        if let Some(item) = self.find_project_item(&pane, &project_item, cx) {
 3435            self.activate_item(&item, activate_pane, focus_item, window, cx);
 3436            return item;
 3437        }
 3438
 3439        let item = pane.update(cx, |pane, cx| {
 3440            cx.new(|cx| {
 3441                T::for_project_item(self.project().clone(), Some(pane), project_item, window, cx)
 3442            })
 3443        });
 3444        let item_id = item.item_id();
 3445        let mut destination_index = None;
 3446        pane.update(cx, |pane, cx| {
 3447            if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation {
 3448                if let Some(preview_item_id) = pane.preview_item_id() {
 3449                    if preview_item_id != item_id {
 3450                        destination_index = pane.close_current_preview_item(window, cx);
 3451                    }
 3452                }
 3453            }
 3454            pane.set_preview_item_id(Some(item.item_id()), cx)
 3455        });
 3456
 3457        self.add_item(
 3458            pane,
 3459            Box::new(item.clone()),
 3460            destination_index,
 3461            activate_pane,
 3462            focus_item,
 3463            window,
 3464            cx,
 3465        );
 3466        item
 3467    }
 3468
 3469    pub fn open_shared_screen(
 3470        &mut self,
 3471        peer_id: PeerId,
 3472        window: &mut Window,
 3473        cx: &mut Context<Self>,
 3474    ) {
 3475        if let Some(shared_screen) =
 3476            self.shared_screen_for_peer(peer_id, &self.active_pane, window, cx)
 3477        {
 3478            self.active_pane.update(cx, |pane, cx| {
 3479                pane.add_item(Box::new(shared_screen), false, true, None, window, cx)
 3480            });
 3481        }
 3482    }
 3483
 3484    pub fn activate_item(
 3485        &mut self,
 3486        item: &dyn ItemHandle,
 3487        activate_pane: bool,
 3488        focus_item: bool,
 3489        window: &mut Window,
 3490        cx: &mut App,
 3491    ) -> bool {
 3492        let result = self.panes.iter().find_map(|pane| {
 3493            pane.read(cx)
 3494                .index_for_item(item)
 3495                .map(|ix| (pane.clone(), ix))
 3496        });
 3497        if let Some((pane, ix)) = result {
 3498            pane.update(cx, |pane, cx| {
 3499                pane.activate_item(ix, activate_pane, focus_item, window, cx)
 3500            });
 3501            true
 3502        } else {
 3503            false
 3504        }
 3505    }
 3506
 3507    fn activate_pane_at_index(
 3508        &mut self,
 3509        action: &ActivatePane,
 3510        window: &mut Window,
 3511        cx: &mut Context<Self>,
 3512    ) {
 3513        let panes = self.center.panes();
 3514        if let Some(pane) = panes.get(action.0).map(|p| (*p).clone()) {
 3515            window.focus(&pane.focus_handle(cx));
 3516        } else {
 3517            self.split_and_clone(self.active_pane.clone(), SplitDirection::Right, window, cx);
 3518        }
 3519    }
 3520
 3521    fn move_item_to_pane_at_index(
 3522        &mut self,
 3523        action: &MoveItemToPane,
 3524        window: &mut Window,
 3525        cx: &mut Context<Self>,
 3526    ) {
 3527        let panes = self.center.panes();
 3528        let destination = match panes.get(action.destination) {
 3529            Some(&destination) => destination.clone(),
 3530            None => {
 3531                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3532                    return;
 3533                }
 3534                let direction = SplitDirection::Right;
 3535                let split_off_pane = self
 3536                    .find_pane_in_direction(direction, cx)
 3537                    .unwrap_or_else(|| self.active_pane.clone());
 3538                let new_pane = self.add_pane(window, cx);
 3539                if self
 3540                    .center
 3541                    .split(&split_off_pane, &new_pane, direction)
 3542                    .log_err()
 3543                    .is_none()
 3544                {
 3545                    return;
 3546                };
 3547                new_pane
 3548            }
 3549        };
 3550
 3551        if action.clone {
 3552            clone_active_item(
 3553                self.database_id(),
 3554                &self.active_pane,
 3555                &destination,
 3556                action.focus,
 3557                window,
 3558                cx,
 3559            )
 3560        } else {
 3561            move_active_item(
 3562                &self.active_pane,
 3563                &destination,
 3564                action.focus,
 3565                true,
 3566                window,
 3567                cx,
 3568            )
 3569        }
 3570    }
 3571
 3572    pub fn activate_next_pane(&mut self, window: &mut Window, cx: &mut App) {
 3573        let panes = self.center.panes();
 3574        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3575            let next_ix = (ix + 1) % panes.len();
 3576            let next_pane = panes[next_ix].clone();
 3577            window.focus(&next_pane.focus_handle(cx));
 3578        }
 3579    }
 3580
 3581    pub fn activate_previous_pane(&mut self, window: &mut Window, cx: &mut App) {
 3582        let panes = self.center.panes();
 3583        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3584            let prev_ix = cmp::min(ix.wrapping_sub(1), panes.len() - 1);
 3585            let prev_pane = panes[prev_ix].clone();
 3586            window.focus(&prev_pane.focus_handle(cx));
 3587        }
 3588    }
 3589
 3590    pub fn activate_pane_in_direction(
 3591        &mut self,
 3592        direction: SplitDirection,
 3593        window: &mut Window,
 3594        cx: &mut App,
 3595    ) {
 3596        use ActivateInDirectionTarget as Target;
 3597        enum Origin {
 3598            LeftDock,
 3599            RightDock,
 3600            BottomDock,
 3601            Center,
 3602        }
 3603
 3604        let origin: Origin = [
 3605            (&self.left_dock, Origin::LeftDock),
 3606            (&self.right_dock, Origin::RightDock),
 3607            (&self.bottom_dock, Origin::BottomDock),
 3608        ]
 3609        .into_iter()
 3610        .find_map(|(dock, origin)| {
 3611            if dock.focus_handle(cx).contains_focused(window, cx) && dock.read(cx).is_open() {
 3612                Some(origin)
 3613            } else {
 3614                None
 3615            }
 3616        })
 3617        .unwrap_or(Origin::Center);
 3618
 3619        let get_last_active_pane = || {
 3620            let pane = self
 3621                .last_active_center_pane
 3622                .clone()
 3623                .unwrap_or_else(|| {
 3624                    self.panes
 3625                        .first()
 3626                        .expect("There must be an active pane")
 3627                        .downgrade()
 3628                })
 3629                .upgrade()?;
 3630            (pane.read(cx).items_len() != 0).then_some(pane)
 3631        };
 3632
 3633        let try_dock =
 3634            |dock: &Entity<Dock>| dock.read(cx).is_open().then(|| Target::Dock(dock.clone()));
 3635
 3636        let target = match (origin, direction) {
 3637            // We're in the center, so we first try to go to a different pane,
 3638            // otherwise try to go to a dock.
 3639            (Origin::Center, direction) => {
 3640                if let Some(pane) = self.find_pane_in_direction(direction, cx) {
 3641                    Some(Target::Pane(pane))
 3642                } else {
 3643                    match direction {
 3644                        SplitDirection::Up => None,
 3645                        SplitDirection::Down => try_dock(&self.bottom_dock),
 3646                        SplitDirection::Left => try_dock(&self.left_dock),
 3647                        SplitDirection::Right => try_dock(&self.right_dock),
 3648                    }
 3649                }
 3650            }
 3651
 3652            (Origin::LeftDock, SplitDirection::Right) => {
 3653                if let Some(last_active_pane) = get_last_active_pane() {
 3654                    Some(Target::Pane(last_active_pane))
 3655                } else {
 3656                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.right_dock))
 3657                }
 3658            }
 3659
 3660            (Origin::LeftDock, SplitDirection::Down)
 3661            | (Origin::RightDock, SplitDirection::Down) => try_dock(&self.bottom_dock),
 3662
 3663            (Origin::BottomDock, SplitDirection::Up) => get_last_active_pane().map(Target::Pane),
 3664            (Origin::BottomDock, SplitDirection::Left) => try_dock(&self.left_dock),
 3665            (Origin::BottomDock, SplitDirection::Right) => try_dock(&self.right_dock),
 3666
 3667            (Origin::RightDock, SplitDirection::Left) => {
 3668                if let Some(last_active_pane) = get_last_active_pane() {
 3669                    Some(Target::Pane(last_active_pane))
 3670                } else {
 3671                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.left_dock))
 3672                }
 3673            }
 3674
 3675            _ => None,
 3676        };
 3677
 3678        match target {
 3679            Some(ActivateInDirectionTarget::Pane(pane)) => {
 3680                let pane = pane.read(cx);
 3681                if let Some(item) = pane.active_item() {
 3682                    item.item_focus_handle(cx).focus(window);
 3683                } else {
 3684                    log::error!(
 3685                        "Could not find a focus target when in switching focus in {direction} direction for a pane",
 3686                    );
 3687                }
 3688            }
 3689            Some(ActivateInDirectionTarget::Dock(dock)) => {
 3690                // Defer this to avoid a panic when the dock's active panel is already on the stack.
 3691                window.defer(cx, move |window, cx| {
 3692                    let dock = dock.read(cx);
 3693                    if let Some(panel) = dock.active_panel() {
 3694                        panel.panel_focus_handle(cx).focus(window);
 3695                    } else {
 3696                        log::error!("Could not find a focus target when in switching focus in {direction} direction for a {:?} dock", dock.position());
 3697                    }
 3698                })
 3699            }
 3700            None => {}
 3701        }
 3702    }
 3703
 3704    pub fn move_item_to_pane_in_direction(
 3705        &mut self,
 3706        action: &MoveItemToPaneInDirection,
 3707        window: &mut Window,
 3708        cx: &mut Context<Self>,
 3709    ) {
 3710        let destination = match self.find_pane_in_direction(action.direction, cx) {
 3711            Some(destination) => destination,
 3712            None => {
 3713                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3714                    return;
 3715                }
 3716                let new_pane = self.add_pane(window, cx);
 3717                if self
 3718                    .center
 3719                    .split(&self.active_pane, &new_pane, action.direction)
 3720                    .log_err()
 3721                    .is_none()
 3722                {
 3723                    return;
 3724                };
 3725                new_pane
 3726            }
 3727        };
 3728
 3729        if action.clone {
 3730            clone_active_item(
 3731                self.database_id(),
 3732                &self.active_pane,
 3733                &destination,
 3734                action.focus,
 3735                window,
 3736                cx,
 3737            )
 3738        } else {
 3739            move_active_item(
 3740                &self.active_pane,
 3741                &destination,
 3742                action.focus,
 3743                true,
 3744                window,
 3745                cx,
 3746            );
 3747        }
 3748    }
 3749
 3750    pub fn bounding_box_for_pane(&self, pane: &Entity<Pane>) -> Option<Bounds<Pixels>> {
 3751        self.center.bounding_box_for_pane(pane)
 3752    }
 3753
 3754    pub fn find_pane_in_direction(
 3755        &mut self,
 3756        direction: SplitDirection,
 3757        cx: &App,
 3758    ) -> Option<Entity<Pane>> {
 3759        self.center
 3760            .find_pane_in_direction(&self.active_pane, direction, cx)
 3761            .cloned()
 3762    }
 3763
 3764    pub fn swap_pane_in_direction(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 3765        if let Some(to) = self.find_pane_in_direction(direction, cx) {
 3766            self.center.swap(&self.active_pane, &to);
 3767            cx.notify();
 3768        }
 3769    }
 3770
 3771    pub fn resize_pane(
 3772        &mut self,
 3773        axis: gpui::Axis,
 3774        amount: Pixels,
 3775        window: &mut Window,
 3776        cx: &mut Context<Self>,
 3777    ) {
 3778        let docks = self.all_docks();
 3779        let active_dock = docks
 3780            .into_iter()
 3781            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 3782
 3783        if let Some(dock) = active_dock {
 3784            let Some(panel_size) = dock.read(cx).active_panel_size(window, cx) else {
 3785                return;
 3786            };
 3787            match dock.read(cx).position() {
 3788                DockPosition::Left => self.resize_left_dock(panel_size + amount, window, cx),
 3789                DockPosition::Bottom => self.resize_bottom_dock(panel_size + amount, window, cx),
 3790                DockPosition::Right => self.resize_right_dock(panel_size + amount, window, cx),
 3791            }
 3792        } else {
 3793            self.center
 3794                .resize(&self.active_pane, axis, amount, &self.bounds);
 3795        }
 3796        cx.notify();
 3797    }
 3798
 3799    pub fn reset_pane_sizes(&mut self, cx: &mut Context<Self>) {
 3800        self.center.reset_pane_sizes();
 3801        cx.notify();
 3802    }
 3803
 3804    fn handle_pane_focused(
 3805        &mut self,
 3806        pane: Entity<Pane>,
 3807        window: &mut Window,
 3808        cx: &mut Context<Self>,
 3809    ) {
 3810        // This is explicitly hoisted out of the following check for pane identity as
 3811        // terminal panel panes are not registered as a center panes.
 3812        self.status_bar.update(cx, |status_bar, cx| {
 3813            status_bar.set_active_pane(&pane, window, cx);
 3814        });
 3815        if self.active_pane != pane {
 3816            self.set_active_pane(&pane, window, cx);
 3817        }
 3818
 3819        if self.last_active_center_pane.is_none() {
 3820            self.last_active_center_pane = Some(pane.downgrade());
 3821        }
 3822
 3823        self.dismiss_zoomed_items_to_reveal(None, window, cx);
 3824        if pane.read(cx).is_zoomed() {
 3825            self.zoomed = Some(pane.downgrade().into());
 3826        } else {
 3827            self.zoomed = None;
 3828        }
 3829        self.zoomed_position = None;
 3830        cx.emit(Event::ZoomChanged);
 3831        self.update_active_view_for_followers(window, cx);
 3832        pane.update(cx, |pane, _| {
 3833            pane.track_alternate_file_items();
 3834        });
 3835
 3836        cx.notify();
 3837    }
 3838
 3839    fn set_active_pane(
 3840        &mut self,
 3841        pane: &Entity<Pane>,
 3842        window: &mut Window,
 3843        cx: &mut Context<Self>,
 3844    ) {
 3845        self.active_pane = pane.clone();
 3846        self.active_item_path_changed(window, cx);
 3847        self.last_active_center_pane = Some(pane.downgrade());
 3848    }
 3849
 3850    fn handle_panel_focused(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3851        self.update_active_view_for_followers(window, cx);
 3852    }
 3853
 3854    fn handle_pane_event(
 3855        &mut self,
 3856        pane: &Entity<Pane>,
 3857        event: &pane::Event,
 3858        window: &mut Window,
 3859        cx: &mut Context<Self>,
 3860    ) {
 3861        let mut serialize_workspace = true;
 3862        match event {
 3863            pane::Event::AddItem { item } => {
 3864                item.added_to_pane(self, pane.clone(), window, cx);
 3865                cx.emit(Event::ItemAdded {
 3866                    item: item.boxed_clone(),
 3867                });
 3868            }
 3869            pane::Event::Split(direction) => {
 3870                self.split_and_clone(pane.clone(), *direction, window, cx);
 3871            }
 3872            pane::Event::JoinIntoNext => {
 3873                self.join_pane_into_next(pane.clone(), window, cx);
 3874            }
 3875            pane::Event::JoinAll => {
 3876                self.join_all_panes(window, cx);
 3877            }
 3878            pane::Event::Remove { focus_on_pane } => {
 3879                self.remove_pane(pane.clone(), focus_on_pane.clone(), window, cx);
 3880            }
 3881            pane::Event::ActivateItem {
 3882                local,
 3883                focus_changed,
 3884            } => {
 3885                cx.on_next_frame(window, |_, window, _| {
 3886                    window.invalidate_character_coordinates();
 3887                });
 3888
 3889                pane.update(cx, |pane, _| {
 3890                    pane.track_alternate_file_items();
 3891                });
 3892                if *local {
 3893                    self.unfollow_in_pane(&pane, window, cx);
 3894                }
 3895                serialize_workspace = *focus_changed || pane != self.active_pane();
 3896                if pane == self.active_pane() {
 3897                    self.active_item_path_changed(window, cx);
 3898                    self.update_active_view_for_followers(window, cx);
 3899                } else if *local {
 3900                    self.set_active_pane(&pane, window, cx);
 3901                }
 3902            }
 3903            pane::Event::UserSavedItem { item, save_intent } => {
 3904                cx.emit(Event::UserSavedItem {
 3905                    pane: pane.downgrade(),
 3906                    item: item.boxed_clone(),
 3907                    save_intent: *save_intent,
 3908                });
 3909                serialize_workspace = false;
 3910            }
 3911            pane::Event::ChangeItemTitle => {
 3912                if *pane == self.active_pane {
 3913                    self.active_item_path_changed(window, cx);
 3914                }
 3915                serialize_workspace = false;
 3916            }
 3917            pane::Event::RemoveItem { .. } => {}
 3918            pane::Event::RemovedItem { item } => {
 3919                cx.emit(Event::ActiveItemChanged);
 3920                self.update_window_edited(window, cx);
 3921                if let hash_map::Entry::Occupied(entry) = self.panes_by_item.entry(item.item_id()) {
 3922                    if entry.get().entity_id() == pane.entity_id() {
 3923                        entry.remove();
 3924                    }
 3925                }
 3926            }
 3927            pane::Event::Focus => {
 3928                cx.on_next_frame(window, |_, window, _| {
 3929                    window.invalidate_character_coordinates();
 3930                });
 3931                self.handle_pane_focused(pane.clone(), window, cx);
 3932            }
 3933            pane::Event::ZoomIn => {
 3934                if *pane == self.active_pane {
 3935                    pane.update(cx, |pane, cx| pane.set_zoomed(true, cx));
 3936                    if pane.read(cx).has_focus(window, cx) {
 3937                        self.zoomed = Some(pane.downgrade().into());
 3938                        self.zoomed_position = None;
 3939                        cx.emit(Event::ZoomChanged);
 3940                    }
 3941                    cx.notify();
 3942                }
 3943            }
 3944            pane::Event::ZoomOut => {
 3945                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 3946                if self.zoomed_position.is_none() {
 3947                    self.zoomed = None;
 3948                    cx.emit(Event::ZoomChanged);
 3949                }
 3950                cx.notify();
 3951            }
 3952            pane::Event::ItemPinned | pane::Event::ItemUnpinned => {}
 3953        }
 3954
 3955        if serialize_workspace {
 3956            self.serialize_workspace(window, cx);
 3957        }
 3958    }
 3959
 3960    pub fn unfollow_in_pane(
 3961        &mut self,
 3962        pane: &Entity<Pane>,
 3963        window: &mut Window,
 3964        cx: &mut Context<Workspace>,
 3965    ) -> Option<CollaboratorId> {
 3966        let leader_id = self.leader_for_pane(pane)?;
 3967        self.unfollow(leader_id, window, cx);
 3968        Some(leader_id)
 3969    }
 3970
 3971    pub fn split_pane(
 3972        &mut self,
 3973        pane_to_split: Entity<Pane>,
 3974        split_direction: SplitDirection,
 3975        window: &mut Window,
 3976        cx: &mut Context<Self>,
 3977    ) -> Entity<Pane> {
 3978        let new_pane = self.add_pane(window, cx);
 3979        self.center
 3980            .split(&pane_to_split, &new_pane, split_direction)
 3981            .unwrap();
 3982        cx.notify();
 3983        new_pane
 3984    }
 3985
 3986    pub fn split_and_clone(
 3987        &mut self,
 3988        pane: Entity<Pane>,
 3989        direction: SplitDirection,
 3990        window: &mut Window,
 3991        cx: &mut Context<Self>,
 3992    ) -> Option<Entity<Pane>> {
 3993        let item = pane.read(cx).active_item()?;
 3994        let maybe_pane_handle =
 3995            if let Some(clone) = item.clone_on_split(self.database_id(), window, cx) {
 3996                let new_pane = self.add_pane(window, cx);
 3997                new_pane.update(cx, |pane, cx| {
 3998                    pane.add_item(clone, true, true, None, window, cx)
 3999                });
 4000                self.center.split(&pane, &new_pane, direction).unwrap();
 4001                Some(new_pane)
 4002            } else {
 4003                None
 4004            };
 4005        cx.notify();
 4006        maybe_pane_handle
 4007    }
 4008
 4009    pub fn split_pane_with_item(
 4010        &mut self,
 4011        pane_to_split: WeakEntity<Pane>,
 4012        split_direction: SplitDirection,
 4013        from: WeakEntity<Pane>,
 4014        item_id_to_move: EntityId,
 4015        window: &mut Window,
 4016        cx: &mut Context<Self>,
 4017    ) {
 4018        let Some(pane_to_split) = pane_to_split.upgrade() else {
 4019            return;
 4020        };
 4021        let Some(from) = from.upgrade() else {
 4022            return;
 4023        };
 4024
 4025        let new_pane = self.add_pane(window, cx);
 4026        move_item(&from, &new_pane, item_id_to_move, 0, true, window, cx);
 4027        self.center
 4028            .split(&pane_to_split, &new_pane, split_direction)
 4029            .unwrap();
 4030        cx.notify();
 4031    }
 4032
 4033    pub fn split_pane_with_project_entry(
 4034        &mut self,
 4035        pane_to_split: WeakEntity<Pane>,
 4036        split_direction: SplitDirection,
 4037        project_entry: ProjectEntryId,
 4038        window: &mut Window,
 4039        cx: &mut Context<Self>,
 4040    ) -> Option<Task<Result<()>>> {
 4041        let pane_to_split = pane_to_split.upgrade()?;
 4042        let new_pane = self.add_pane(window, cx);
 4043        self.center
 4044            .split(&pane_to_split, &new_pane, split_direction)
 4045            .unwrap();
 4046
 4047        let path = self.project.read(cx).path_for_entry(project_entry, cx)?;
 4048        let task = self.open_path(path, Some(new_pane.downgrade()), true, window, cx);
 4049        Some(cx.foreground_executor().spawn(async move {
 4050            task.await?;
 4051            Ok(())
 4052        }))
 4053    }
 4054
 4055    pub fn join_all_panes(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4056        let active_item = self.active_pane.read(cx).active_item();
 4057        for pane in &self.panes {
 4058            join_pane_into_active(&self.active_pane, pane, window, cx);
 4059        }
 4060        if let Some(active_item) = active_item {
 4061            self.activate_item(active_item.as_ref(), true, true, window, cx);
 4062        }
 4063        cx.notify();
 4064    }
 4065
 4066    pub fn join_pane_into_next(
 4067        &mut self,
 4068        pane: Entity<Pane>,
 4069        window: &mut Window,
 4070        cx: &mut Context<Self>,
 4071    ) {
 4072        let next_pane = self
 4073            .find_pane_in_direction(SplitDirection::Right, cx)
 4074            .or_else(|| self.find_pane_in_direction(SplitDirection::Down, cx))
 4075            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4076            .or_else(|| self.find_pane_in_direction(SplitDirection::Up, cx));
 4077        let Some(next_pane) = next_pane else {
 4078            return;
 4079        };
 4080        move_all_items(&pane, &next_pane, window, cx);
 4081        cx.notify();
 4082    }
 4083
 4084    fn remove_pane(
 4085        &mut self,
 4086        pane: Entity<Pane>,
 4087        focus_on: Option<Entity<Pane>>,
 4088        window: &mut Window,
 4089        cx: &mut Context<Self>,
 4090    ) {
 4091        if self.center.remove(&pane).unwrap() {
 4092            self.force_remove_pane(&pane, &focus_on, window, cx);
 4093            self.unfollow_in_pane(&pane, window, cx);
 4094            self.last_leaders_by_pane.remove(&pane.downgrade());
 4095            for removed_item in pane.read(cx).items() {
 4096                self.panes_by_item.remove(&removed_item.item_id());
 4097            }
 4098
 4099            cx.notify();
 4100        } else {
 4101            self.active_item_path_changed(window, cx);
 4102        }
 4103        cx.emit(Event::PaneRemoved);
 4104    }
 4105
 4106    pub fn panes(&self) -> &[Entity<Pane>] {
 4107        &self.panes
 4108    }
 4109
 4110    pub fn active_pane(&self) -> &Entity<Pane> {
 4111        &self.active_pane
 4112    }
 4113
 4114    pub fn focused_pane(&self, window: &Window, cx: &App) -> Entity<Pane> {
 4115        for dock in self.all_docks() {
 4116            if dock.focus_handle(cx).contains_focused(window, cx) {
 4117                if let Some(pane) = dock
 4118                    .read(cx)
 4119                    .active_panel()
 4120                    .and_then(|panel| panel.pane(cx))
 4121                {
 4122                    return pane;
 4123                }
 4124            }
 4125        }
 4126        self.active_pane().clone()
 4127    }
 4128
 4129    pub fn adjacent_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 4130        self.find_pane_in_direction(SplitDirection::Right, cx)
 4131            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4132            .unwrap_or_else(|| {
 4133                self.split_pane(self.active_pane.clone(), SplitDirection::Right, window, cx)
 4134            })
 4135            .clone()
 4136    }
 4137
 4138    pub fn pane_for(&self, handle: &dyn ItemHandle) -> Option<Entity<Pane>> {
 4139        let weak_pane = self.panes_by_item.get(&handle.item_id())?;
 4140        weak_pane.upgrade()
 4141    }
 4142
 4143    fn collaborator_left(&mut self, peer_id: PeerId, window: &mut Window, cx: &mut Context<Self>) {
 4144        self.follower_states.retain(|leader_id, state| {
 4145            if *leader_id == CollaboratorId::PeerId(peer_id) {
 4146                for item in state.items_by_leader_view_id.values() {
 4147                    item.view.set_leader_id(None, window, cx);
 4148                }
 4149                false
 4150            } else {
 4151                true
 4152            }
 4153        });
 4154        cx.notify();
 4155    }
 4156
 4157    pub fn start_following(
 4158        &mut self,
 4159        leader_id: impl Into<CollaboratorId>,
 4160        window: &mut Window,
 4161        cx: &mut Context<Self>,
 4162    ) -> Option<Task<Result<()>>> {
 4163        let leader_id = leader_id.into();
 4164        let pane = self.active_pane().clone();
 4165
 4166        self.last_leaders_by_pane
 4167            .insert(pane.downgrade(), leader_id);
 4168        self.unfollow(leader_id, window, cx);
 4169        self.unfollow_in_pane(&pane, window, cx);
 4170        self.follower_states.insert(
 4171            leader_id,
 4172            FollowerState {
 4173                center_pane: pane.clone(),
 4174                dock_pane: None,
 4175                active_view_id: None,
 4176                items_by_leader_view_id: Default::default(),
 4177            },
 4178        );
 4179        cx.notify();
 4180
 4181        match leader_id {
 4182            CollaboratorId::PeerId(leader_peer_id) => {
 4183                let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4184                let project_id = self.project.read(cx).remote_id();
 4185                let request = self.app_state.client.request(proto::Follow {
 4186                    room_id,
 4187                    project_id,
 4188                    leader_id: Some(leader_peer_id),
 4189                });
 4190
 4191                Some(cx.spawn_in(window, async move |this, cx| {
 4192                    let response = request.await?;
 4193                    this.update(cx, |this, _| {
 4194                        let state = this
 4195                            .follower_states
 4196                            .get_mut(&leader_id)
 4197                            .context("following interrupted")?;
 4198                        state.active_view_id = response
 4199                            .active_view
 4200                            .as_ref()
 4201                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4202                        anyhow::Ok(())
 4203                    })??;
 4204                    if let Some(view) = response.active_view {
 4205                        Self::add_view_from_leader(this.clone(), leader_peer_id, &view, cx).await?;
 4206                    }
 4207                    this.update_in(cx, |this, window, cx| {
 4208                        this.leader_updated(leader_id, window, cx)
 4209                    })?;
 4210                    Ok(())
 4211                }))
 4212            }
 4213            CollaboratorId::Agent => {
 4214                self.leader_updated(leader_id, window, cx)?;
 4215                Some(Task::ready(Ok(())))
 4216            }
 4217        }
 4218    }
 4219
 4220    pub fn follow_next_collaborator(
 4221        &mut self,
 4222        _: &FollowNextCollaborator,
 4223        window: &mut Window,
 4224        cx: &mut Context<Self>,
 4225    ) {
 4226        let collaborators = self.project.read(cx).collaborators();
 4227        let next_leader_id = if let Some(leader_id) = self.leader_for_pane(&self.active_pane) {
 4228            let mut collaborators = collaborators.keys().copied();
 4229            for peer_id in collaborators.by_ref() {
 4230                if CollaboratorId::PeerId(peer_id) == leader_id {
 4231                    break;
 4232                }
 4233            }
 4234            collaborators.next().map(CollaboratorId::PeerId)
 4235        } else if let Some(last_leader_id) =
 4236            self.last_leaders_by_pane.get(&self.active_pane.downgrade())
 4237        {
 4238            match last_leader_id {
 4239                CollaboratorId::PeerId(peer_id) => {
 4240                    if collaborators.contains_key(peer_id) {
 4241                        Some(*last_leader_id)
 4242                    } else {
 4243                        None
 4244                    }
 4245                }
 4246                CollaboratorId::Agent => Some(CollaboratorId::Agent),
 4247            }
 4248        } else {
 4249            None
 4250        };
 4251
 4252        let pane = self.active_pane.clone();
 4253        let Some(leader_id) = next_leader_id.or_else(|| {
 4254            Some(CollaboratorId::PeerId(
 4255                collaborators.keys().copied().next()?,
 4256            ))
 4257        }) else {
 4258            return;
 4259        };
 4260        if self.unfollow_in_pane(&pane, window, cx) == Some(leader_id) {
 4261            return;
 4262        }
 4263        if let Some(task) = self.start_following(leader_id, window, cx) {
 4264            task.detach_and_log_err(cx)
 4265        }
 4266    }
 4267
 4268    pub fn follow(
 4269        &mut self,
 4270        leader_id: impl Into<CollaboratorId>,
 4271        window: &mut Window,
 4272        cx: &mut Context<Self>,
 4273    ) {
 4274        let leader_id = leader_id.into();
 4275
 4276        if let CollaboratorId::PeerId(peer_id) = leader_id {
 4277            let Some(room) = ActiveCall::global(cx).read(cx).room() else {
 4278                return;
 4279            };
 4280            let room = room.read(cx);
 4281            let Some(remote_participant) = room.remote_participant_for_peer_id(peer_id) else {
 4282                return;
 4283            };
 4284
 4285            let project = self.project.read(cx);
 4286
 4287            let other_project_id = match remote_participant.location {
 4288                call::ParticipantLocation::External => None,
 4289                call::ParticipantLocation::UnsharedProject => None,
 4290                call::ParticipantLocation::SharedProject { project_id } => {
 4291                    if Some(project_id) == project.remote_id() {
 4292                        None
 4293                    } else {
 4294                        Some(project_id)
 4295                    }
 4296                }
 4297            };
 4298
 4299            // if they are active in another project, follow there.
 4300            if let Some(project_id) = other_project_id {
 4301                let app_state = self.app_state.clone();
 4302                crate::join_in_room_project(project_id, remote_participant.user.id, app_state, cx)
 4303                    .detach_and_log_err(cx);
 4304            }
 4305        }
 4306
 4307        // if you're already following, find the right pane and focus it.
 4308        if let Some(follower_state) = self.follower_states.get(&leader_id) {
 4309            window.focus(&follower_state.pane().focus_handle(cx));
 4310
 4311            return;
 4312        }
 4313
 4314        // Otherwise, follow.
 4315        if let Some(task) = self.start_following(leader_id, window, cx) {
 4316            task.detach_and_log_err(cx)
 4317        }
 4318    }
 4319
 4320    pub fn unfollow(
 4321        &mut self,
 4322        leader_id: impl Into<CollaboratorId>,
 4323        window: &mut Window,
 4324        cx: &mut Context<Self>,
 4325    ) -> Option<()> {
 4326        cx.notify();
 4327
 4328        let leader_id = leader_id.into();
 4329        let state = self.follower_states.remove(&leader_id)?;
 4330        for (_, item) in state.items_by_leader_view_id {
 4331            item.view.set_leader_id(None, window, cx);
 4332        }
 4333
 4334        if let CollaboratorId::PeerId(leader_peer_id) = leader_id {
 4335            let project_id = self.project.read(cx).remote_id();
 4336            let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4337            self.app_state
 4338                .client
 4339                .send(proto::Unfollow {
 4340                    room_id,
 4341                    project_id,
 4342                    leader_id: Some(leader_peer_id),
 4343                })
 4344                .log_err();
 4345        }
 4346
 4347        Some(())
 4348    }
 4349
 4350    pub fn is_being_followed(&self, id: impl Into<CollaboratorId>) -> bool {
 4351        self.follower_states.contains_key(&id.into())
 4352    }
 4353
 4354    fn active_item_path_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4355        cx.emit(Event::ActiveItemChanged);
 4356        let active_entry = self.active_project_path(cx);
 4357        self.project
 4358            .update(cx, |project, cx| project.set_active_path(active_entry, cx));
 4359
 4360        self.update_window_title(window, cx);
 4361    }
 4362
 4363    fn update_window_title(&mut self, window: &mut Window, cx: &mut App) {
 4364        let project = self.project().read(cx);
 4365        let mut title = String::new();
 4366
 4367        for (i, name) in project.worktree_root_names(cx).enumerate() {
 4368            if i > 0 {
 4369                title.push_str(", ");
 4370            }
 4371            title.push_str(name);
 4372        }
 4373
 4374        if title.is_empty() {
 4375            title = "empty project".to_string();
 4376        }
 4377
 4378        if let Some(path) = self.active_item(cx).and_then(|item| item.project_path(cx)) {
 4379            let filename = path
 4380                .path
 4381                .file_name()
 4382                .map(|s| s.to_string_lossy())
 4383                .or_else(|| {
 4384                    Some(Cow::Borrowed(
 4385                        project
 4386                            .worktree_for_id(path.worktree_id, cx)?
 4387                            .read(cx)
 4388                            .root_name(),
 4389                    ))
 4390                });
 4391
 4392            if let Some(filename) = filename {
 4393                title.push_str("");
 4394                title.push_str(filename.as_ref());
 4395            }
 4396        }
 4397
 4398        if project.is_via_collab() {
 4399            title.push_str("");
 4400        } else if project.is_shared() {
 4401            title.push_str("");
 4402        }
 4403
 4404        window.set_window_title(&title);
 4405    }
 4406
 4407    fn update_window_edited(&mut self, window: &mut Window, cx: &mut App) {
 4408        let is_edited = !self.project.read(cx).is_disconnected(cx) && !self.dirty_items.is_empty();
 4409        if is_edited != self.window_edited {
 4410            self.window_edited = is_edited;
 4411            window.set_window_edited(self.window_edited)
 4412        }
 4413    }
 4414
 4415    fn update_item_dirty_state(
 4416        &mut self,
 4417        item: &dyn ItemHandle,
 4418        window: &mut Window,
 4419        cx: &mut App,
 4420    ) {
 4421        let is_dirty = item.is_dirty(cx);
 4422        let item_id = item.item_id();
 4423        let was_dirty = self.dirty_items.contains_key(&item_id);
 4424        if is_dirty == was_dirty {
 4425            return;
 4426        }
 4427        if was_dirty {
 4428            self.dirty_items.remove(&item_id);
 4429            self.update_window_edited(window, cx);
 4430            return;
 4431        }
 4432        if let Some(window_handle) = window.window_handle().downcast::<Self>() {
 4433            let s = item.on_release(
 4434                cx,
 4435                Box::new(move |cx| {
 4436                    window_handle
 4437                        .update(cx, |this, window, cx| {
 4438                            this.dirty_items.remove(&item_id);
 4439                            this.update_window_edited(window, cx)
 4440                        })
 4441                        .ok();
 4442                }),
 4443            );
 4444            self.dirty_items.insert(item_id, s);
 4445            self.update_window_edited(window, cx);
 4446        }
 4447    }
 4448
 4449    fn render_notifications(&self, _window: &mut Window, _cx: &mut Context<Self>) -> Option<Div> {
 4450        if self.notifications.is_empty() {
 4451            None
 4452        } else {
 4453            Some(
 4454                div()
 4455                    .absolute()
 4456                    .right_3()
 4457                    .bottom_3()
 4458                    .w_112()
 4459                    .h_full()
 4460                    .flex()
 4461                    .flex_col()
 4462                    .justify_end()
 4463                    .gap_2()
 4464                    .children(
 4465                        self.notifications
 4466                            .iter()
 4467                            .map(|(_, notification)| notification.clone().into_any()),
 4468                    ),
 4469            )
 4470        }
 4471    }
 4472
 4473    // RPC handlers
 4474
 4475    fn active_view_for_follower(
 4476        &self,
 4477        follower_project_id: Option<u64>,
 4478        window: &mut Window,
 4479        cx: &mut Context<Self>,
 4480    ) -> Option<proto::View> {
 4481        let (item, panel_id) = self.active_item_for_followers(window, cx);
 4482        let item = item?;
 4483        let leader_id = self
 4484            .pane_for(&*item)
 4485            .and_then(|pane| self.leader_for_pane(&pane));
 4486        let leader_peer_id = match leader_id {
 4487            Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4488            Some(CollaboratorId::Agent) | None => None,
 4489        };
 4490
 4491        let item_handle = item.to_followable_item_handle(cx)?;
 4492        let id = item_handle.remote_id(&self.app_state.client, window, cx)?;
 4493        let variant = item_handle.to_state_proto(window, cx)?;
 4494
 4495        if item_handle.is_project_item(window, cx)
 4496            && (follower_project_id.is_none()
 4497                || follower_project_id != self.project.read(cx).remote_id())
 4498        {
 4499            return None;
 4500        }
 4501
 4502        Some(proto::View {
 4503            id: id.to_proto(),
 4504            leader_id: leader_peer_id,
 4505            variant: Some(variant),
 4506            panel_id: panel_id.map(|id| id as i32),
 4507        })
 4508    }
 4509
 4510    fn handle_follow(
 4511        &mut self,
 4512        follower_project_id: Option<u64>,
 4513        window: &mut Window,
 4514        cx: &mut Context<Self>,
 4515    ) -> proto::FollowResponse {
 4516        let active_view = self.active_view_for_follower(follower_project_id, window, cx);
 4517
 4518        cx.notify();
 4519        proto::FollowResponse {
 4520            // TODO: Remove after version 0.145.x stabilizes.
 4521            active_view_id: active_view.as_ref().and_then(|view| view.id.clone()),
 4522            views: active_view.iter().cloned().collect(),
 4523            active_view,
 4524        }
 4525    }
 4526
 4527    fn handle_update_followers(
 4528        &mut self,
 4529        leader_id: PeerId,
 4530        message: proto::UpdateFollowers,
 4531        _window: &mut Window,
 4532        _cx: &mut Context<Self>,
 4533    ) {
 4534        self.leader_updates_tx
 4535            .unbounded_send((leader_id, message))
 4536            .ok();
 4537    }
 4538
 4539    async fn process_leader_update(
 4540        this: &WeakEntity<Self>,
 4541        leader_id: PeerId,
 4542        update: proto::UpdateFollowers,
 4543        cx: &mut AsyncWindowContext,
 4544    ) -> Result<()> {
 4545        match update.variant.context("invalid update")? {
 4546            proto::update_followers::Variant::CreateView(view) => {
 4547                let view_id = ViewId::from_proto(view.id.clone().context("invalid view id")?)?;
 4548                let should_add_view = this.update(cx, |this, _| {
 4549                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4550                        anyhow::Ok(!state.items_by_leader_view_id.contains_key(&view_id))
 4551                    } else {
 4552                        anyhow::Ok(false)
 4553                    }
 4554                })??;
 4555
 4556                if should_add_view {
 4557                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4558                }
 4559            }
 4560            proto::update_followers::Variant::UpdateActiveView(update_active_view) => {
 4561                let should_add_view = this.update(cx, |this, _| {
 4562                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4563                        state.active_view_id = update_active_view
 4564                            .view
 4565                            .as_ref()
 4566                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4567
 4568                        if state.active_view_id.is_some_and(|view_id| {
 4569                            !state.items_by_leader_view_id.contains_key(&view_id)
 4570                        }) {
 4571                            anyhow::Ok(true)
 4572                        } else {
 4573                            anyhow::Ok(false)
 4574                        }
 4575                    } else {
 4576                        anyhow::Ok(false)
 4577                    }
 4578                })??;
 4579
 4580                if should_add_view {
 4581                    if let Some(view) = update_active_view.view {
 4582                        Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4583                    }
 4584                }
 4585            }
 4586            proto::update_followers::Variant::UpdateView(update_view) => {
 4587                let variant = update_view.variant.context("missing update view variant")?;
 4588                let id = update_view.id.context("missing update view id")?;
 4589                let mut tasks = Vec::new();
 4590                this.update_in(cx, |this, window, cx| {
 4591                    let project = this.project.clone();
 4592                    if let Some(state) = this.follower_states.get(&leader_id.into()) {
 4593                        let view_id = ViewId::from_proto(id.clone())?;
 4594                        if let Some(item) = state.items_by_leader_view_id.get(&view_id) {
 4595                            tasks.push(item.view.apply_update_proto(
 4596                                &project,
 4597                                variant.clone(),
 4598                                window,
 4599                                cx,
 4600                            ));
 4601                        }
 4602                    }
 4603                    anyhow::Ok(())
 4604                })??;
 4605                try_join_all(tasks).await.log_err();
 4606            }
 4607        }
 4608        this.update_in(cx, |this, window, cx| {
 4609            this.leader_updated(leader_id, window, cx)
 4610        })?;
 4611        Ok(())
 4612    }
 4613
 4614    async fn add_view_from_leader(
 4615        this: WeakEntity<Self>,
 4616        leader_id: PeerId,
 4617        view: &proto::View,
 4618        cx: &mut AsyncWindowContext,
 4619    ) -> Result<()> {
 4620        let this = this.upgrade().context("workspace dropped")?;
 4621
 4622        let Some(id) = view.id.clone() else {
 4623            anyhow::bail!("no id for view");
 4624        };
 4625        let id = ViewId::from_proto(id)?;
 4626        let panel_id = view.panel_id.and_then(proto::PanelId::from_i32);
 4627
 4628        let pane = this.update(cx, |this, _cx| {
 4629            let state = this
 4630                .follower_states
 4631                .get(&leader_id.into())
 4632                .context("stopped following")?;
 4633            anyhow::Ok(state.pane().clone())
 4634        })??;
 4635        let existing_item = pane.update_in(cx, |pane, window, cx| {
 4636            let client = this.read(cx).client().clone();
 4637            pane.items().find_map(|item| {
 4638                let item = item.to_followable_item_handle(cx)?;
 4639                if item.remote_id(&client, window, cx) == Some(id) {
 4640                    Some(item)
 4641                } else {
 4642                    None
 4643                }
 4644            })
 4645        })?;
 4646        let item = if let Some(existing_item) = existing_item {
 4647            existing_item
 4648        } else {
 4649            let variant = view.variant.clone();
 4650            anyhow::ensure!(variant.is_some(), "missing view variant");
 4651
 4652            let task = cx.update(|window, cx| {
 4653                FollowableViewRegistry::from_state_proto(this.clone(), id, variant, window, cx)
 4654            })?;
 4655
 4656            let Some(task) = task else {
 4657                anyhow::bail!(
 4658                    "failed to construct view from leader (maybe from a different version of zed?)"
 4659                );
 4660            };
 4661
 4662            let mut new_item = task.await?;
 4663            pane.update_in(cx, |pane, window, cx| {
 4664                let mut item_to_remove = None;
 4665                for (ix, item) in pane.items().enumerate() {
 4666                    if let Some(item) = item.to_followable_item_handle(cx) {
 4667                        match new_item.dedup(item.as_ref(), window, cx) {
 4668                            Some(item::Dedup::KeepExisting) => {
 4669                                new_item =
 4670                                    item.boxed_clone().to_followable_item_handle(cx).unwrap();
 4671                                break;
 4672                            }
 4673                            Some(item::Dedup::ReplaceExisting) => {
 4674                                item_to_remove = Some((ix, item.item_id()));
 4675                                break;
 4676                            }
 4677                            None => {}
 4678                        }
 4679                    }
 4680                }
 4681
 4682                if let Some((ix, id)) = item_to_remove {
 4683                    pane.remove_item(id, false, false, window, cx);
 4684                    pane.add_item(new_item.boxed_clone(), false, false, Some(ix), window, cx);
 4685                }
 4686            })?;
 4687
 4688            new_item
 4689        };
 4690
 4691        this.update_in(cx, |this, window, cx| {
 4692            let state = this.follower_states.get_mut(&leader_id.into())?;
 4693            item.set_leader_id(Some(leader_id.into()), window, cx);
 4694            state.items_by_leader_view_id.insert(
 4695                id,
 4696                FollowerView {
 4697                    view: item,
 4698                    location: panel_id,
 4699                },
 4700            );
 4701
 4702            Some(())
 4703        })?;
 4704
 4705        Ok(())
 4706    }
 4707
 4708    fn handle_agent_location_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4709        let Some(follower_state) = self.follower_states.get_mut(&CollaboratorId::Agent) else {
 4710            return;
 4711        };
 4712
 4713        if let Some(agent_location) = self.project.read(cx).agent_location() {
 4714            let buffer_entity_id = agent_location.buffer.entity_id();
 4715            let view_id = ViewId {
 4716                creator: CollaboratorId::Agent,
 4717                id: buffer_entity_id.as_u64(),
 4718            };
 4719            follower_state.active_view_id = Some(view_id);
 4720
 4721            let item = match follower_state.items_by_leader_view_id.entry(view_id) {
 4722                hash_map::Entry::Occupied(entry) => Some(entry.into_mut()),
 4723                hash_map::Entry::Vacant(entry) => {
 4724                    let existing_view =
 4725                        follower_state
 4726                            .center_pane
 4727                            .read(cx)
 4728                            .items()
 4729                            .find_map(|item| {
 4730                                let item = item.to_followable_item_handle(cx)?;
 4731                                if item.is_singleton(cx)
 4732                                    && item.project_item_model_ids(cx).as_slice()
 4733                                        == [buffer_entity_id]
 4734                                {
 4735                                    Some(item)
 4736                                } else {
 4737                                    None
 4738                                }
 4739                            });
 4740                    let view = existing_view.or_else(|| {
 4741                        agent_location.buffer.upgrade().and_then(|buffer| {
 4742                            cx.update_default_global(|registry: &mut ProjectItemRegistry, cx| {
 4743                                registry.build_item(buffer, self.project.clone(), None, window, cx)
 4744                            })?
 4745                            .to_followable_item_handle(cx)
 4746                        })
 4747                    });
 4748
 4749                    if let Some(view) = view {
 4750                        Some(entry.insert(FollowerView {
 4751                            view,
 4752                            location: None,
 4753                        }))
 4754                    } else {
 4755                        None
 4756                    }
 4757                }
 4758            };
 4759
 4760            if let Some(item) = item {
 4761                item.view
 4762                    .set_leader_id(Some(CollaboratorId::Agent), window, cx);
 4763                item.view
 4764                    .update_agent_location(agent_location.position, window, cx);
 4765            }
 4766        } else {
 4767            follower_state.active_view_id = None;
 4768        }
 4769
 4770        self.leader_updated(CollaboratorId::Agent, window, cx);
 4771    }
 4772
 4773    pub fn update_active_view_for_followers(&mut self, window: &mut Window, cx: &mut App) {
 4774        let mut is_project_item = true;
 4775        let mut update = proto::UpdateActiveView::default();
 4776        if window.is_window_active() {
 4777            let (active_item, panel_id) = self.active_item_for_followers(window, cx);
 4778
 4779            if let Some(item) = active_item {
 4780                if item.item_focus_handle(cx).contains_focused(window, cx) {
 4781                    let leader_id = self
 4782                        .pane_for(&*item)
 4783                        .and_then(|pane| self.leader_for_pane(&pane));
 4784                    let leader_peer_id = match leader_id {
 4785                        Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4786                        Some(CollaboratorId::Agent) | None => None,
 4787                    };
 4788
 4789                    if let Some(item) = item.to_followable_item_handle(cx) {
 4790                        let id = item
 4791                            .remote_id(&self.app_state.client, window, cx)
 4792                            .map(|id| id.to_proto());
 4793
 4794                        if let Some(id) = id.clone() {
 4795                            if let Some(variant) = item.to_state_proto(window, cx) {
 4796                                let view = Some(proto::View {
 4797                                    id: id.clone(),
 4798                                    leader_id: leader_peer_id,
 4799                                    variant: Some(variant),
 4800                                    panel_id: panel_id.map(|id| id as i32),
 4801                                });
 4802
 4803                                is_project_item = item.is_project_item(window, cx);
 4804                                update = proto::UpdateActiveView {
 4805                                    view,
 4806                                    // TODO: Remove after version 0.145.x stabilizes.
 4807                                    id: id.clone(),
 4808                                    leader_id: leader_peer_id,
 4809                                };
 4810                            }
 4811                        };
 4812                    }
 4813                }
 4814            }
 4815        }
 4816
 4817        let active_view_id = update.view.as_ref().and_then(|view| view.id.as_ref());
 4818        if active_view_id != self.last_active_view_id.as_ref() {
 4819            self.last_active_view_id = active_view_id.cloned();
 4820            self.update_followers(
 4821                is_project_item,
 4822                proto::update_followers::Variant::UpdateActiveView(update),
 4823                window,
 4824                cx,
 4825            );
 4826        }
 4827    }
 4828
 4829    fn active_item_for_followers(
 4830        &self,
 4831        window: &mut Window,
 4832        cx: &mut App,
 4833    ) -> (Option<Box<dyn ItemHandle>>, Option<proto::PanelId>) {
 4834        let mut active_item = None;
 4835        let mut panel_id = None;
 4836        for dock in self.all_docks() {
 4837            if dock.focus_handle(cx).contains_focused(window, cx) {
 4838                if let Some(panel) = dock.read(cx).active_panel() {
 4839                    if let Some(pane) = panel.pane(cx) {
 4840                        if let Some(item) = pane.read(cx).active_item() {
 4841                            active_item = Some(item);
 4842                            panel_id = panel.remote_id();
 4843                            break;
 4844                        }
 4845                    }
 4846                }
 4847            }
 4848        }
 4849
 4850        if active_item.is_none() {
 4851            active_item = self.active_pane().read(cx).active_item();
 4852        }
 4853        (active_item, panel_id)
 4854    }
 4855
 4856    fn update_followers(
 4857        &self,
 4858        project_only: bool,
 4859        update: proto::update_followers::Variant,
 4860        _: &mut Window,
 4861        cx: &mut App,
 4862    ) -> Option<()> {
 4863        // If this update only applies to for followers in the current project,
 4864        // then skip it unless this project is shared. If it applies to all
 4865        // followers, regardless of project, then set `project_id` to none,
 4866        // indicating that it goes to all followers.
 4867        let project_id = if project_only {
 4868            Some(self.project.read(cx).remote_id()?)
 4869        } else {
 4870            None
 4871        };
 4872        self.app_state().workspace_store.update(cx, |store, cx| {
 4873            store.update_followers(project_id, update, cx)
 4874        })
 4875    }
 4876
 4877    pub fn leader_for_pane(&self, pane: &Entity<Pane>) -> Option<CollaboratorId> {
 4878        self.follower_states.iter().find_map(|(leader_id, state)| {
 4879            if state.center_pane == *pane || state.dock_pane.as_ref() == Some(pane) {
 4880                Some(*leader_id)
 4881            } else {
 4882                None
 4883            }
 4884        })
 4885    }
 4886
 4887    fn leader_updated(
 4888        &mut self,
 4889        leader_id: impl Into<CollaboratorId>,
 4890        window: &mut Window,
 4891        cx: &mut Context<Self>,
 4892    ) -> Option<Box<dyn ItemHandle>> {
 4893        cx.notify();
 4894
 4895        let leader_id = leader_id.into();
 4896        let (panel_id, item) = match leader_id {
 4897            CollaboratorId::PeerId(peer_id) => self.active_item_for_peer(peer_id, window, cx)?,
 4898            CollaboratorId::Agent => (None, self.active_item_for_agent()?),
 4899        };
 4900
 4901        let state = self.follower_states.get(&leader_id)?;
 4902        let mut transfer_focus = state.center_pane.read(cx).has_focus(window, cx);
 4903        let pane;
 4904        if let Some(panel_id) = panel_id {
 4905            pane = self
 4906                .activate_panel_for_proto_id(panel_id, window, cx)?
 4907                .pane(cx)?;
 4908            let state = self.follower_states.get_mut(&leader_id)?;
 4909            state.dock_pane = Some(pane.clone());
 4910        } else {
 4911            pane = state.center_pane.clone();
 4912            let state = self.follower_states.get_mut(&leader_id)?;
 4913            if let Some(dock_pane) = state.dock_pane.take() {
 4914                transfer_focus |= dock_pane.focus_handle(cx).contains_focused(window, cx);
 4915            }
 4916        }
 4917
 4918        pane.update(cx, |pane, cx| {
 4919            let focus_active_item = pane.has_focus(window, cx) || transfer_focus;
 4920            if let Some(index) = pane.index_for_item(item.as_ref()) {
 4921                pane.activate_item(index, false, false, window, cx);
 4922            } else {
 4923                pane.add_item(item.boxed_clone(), false, false, None, window, cx)
 4924            }
 4925
 4926            if focus_active_item {
 4927                pane.focus_active_item(window, cx)
 4928            }
 4929        });
 4930
 4931        Some(item)
 4932    }
 4933
 4934    fn active_item_for_agent(&self) -> Option<Box<dyn ItemHandle>> {
 4935        let state = self.follower_states.get(&CollaboratorId::Agent)?;
 4936        let active_view_id = state.active_view_id?;
 4937        Some(
 4938            state
 4939                .items_by_leader_view_id
 4940                .get(&active_view_id)?
 4941                .view
 4942                .boxed_clone(),
 4943        )
 4944    }
 4945
 4946    fn active_item_for_peer(
 4947        &self,
 4948        peer_id: PeerId,
 4949        window: &mut Window,
 4950        cx: &mut Context<Self>,
 4951    ) -> Option<(Option<PanelId>, Box<dyn ItemHandle>)> {
 4952        let call = self.active_call()?;
 4953        let room = call.read(cx).room()?.read(cx);
 4954        let participant = room.remote_participant_for_peer_id(peer_id)?;
 4955        let leader_in_this_app;
 4956        let leader_in_this_project;
 4957        match participant.location {
 4958            call::ParticipantLocation::SharedProject { project_id } => {
 4959                leader_in_this_app = true;
 4960                leader_in_this_project = Some(project_id) == self.project.read(cx).remote_id();
 4961            }
 4962            call::ParticipantLocation::UnsharedProject => {
 4963                leader_in_this_app = true;
 4964                leader_in_this_project = false;
 4965            }
 4966            call::ParticipantLocation::External => {
 4967                leader_in_this_app = false;
 4968                leader_in_this_project = false;
 4969            }
 4970        };
 4971        let state = self.follower_states.get(&peer_id.into())?;
 4972        let mut item_to_activate = None;
 4973        if let (Some(active_view_id), true) = (state.active_view_id, leader_in_this_app) {
 4974            if let Some(item) = state.items_by_leader_view_id.get(&active_view_id) {
 4975                if leader_in_this_project || !item.view.is_project_item(window, cx) {
 4976                    item_to_activate = Some((item.location, item.view.boxed_clone()));
 4977                }
 4978            }
 4979        } else if let Some(shared_screen) =
 4980            self.shared_screen_for_peer(peer_id, &state.center_pane, window, cx)
 4981        {
 4982            item_to_activate = Some((None, Box::new(shared_screen)));
 4983        }
 4984        item_to_activate
 4985    }
 4986
 4987    fn shared_screen_for_peer(
 4988        &self,
 4989        peer_id: PeerId,
 4990        pane: &Entity<Pane>,
 4991        window: &mut Window,
 4992        cx: &mut App,
 4993    ) -> Option<Entity<SharedScreen>> {
 4994        let call = self.active_call()?;
 4995        let room = call.read(cx).room()?.clone();
 4996        let participant = room.read(cx).remote_participant_for_peer_id(peer_id)?;
 4997        let track = participant.video_tracks.values().next()?.clone();
 4998        let user = participant.user.clone();
 4999
 5000        for item in pane.read(cx).items_of_type::<SharedScreen>() {
 5001            if item.read(cx).peer_id == peer_id {
 5002                return Some(item);
 5003            }
 5004        }
 5005
 5006        Some(cx.new(|cx| SharedScreen::new(track, peer_id, user.clone(), room.clone(), window, cx)))
 5007    }
 5008
 5009    pub fn on_window_activation_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5010        if window.is_window_active() {
 5011            self.update_active_view_for_followers(window, cx);
 5012
 5013            if let Some(database_id) = self.database_id {
 5014                cx.background_spawn(persistence::DB.update_timestamp(database_id))
 5015                    .detach();
 5016            }
 5017        } else {
 5018            for pane in &self.panes {
 5019                pane.update(cx, |pane, cx| {
 5020                    if let Some(item) = pane.active_item() {
 5021                        item.workspace_deactivated(window, cx);
 5022                    }
 5023                    for item in pane.items() {
 5024                        if matches!(
 5025                            item.workspace_settings(cx).autosave,
 5026                            AutosaveSetting::OnWindowChange | AutosaveSetting::OnFocusChange
 5027                        ) {
 5028                            Pane::autosave_item(item.as_ref(), self.project.clone(), window, cx)
 5029                                .detach_and_log_err(cx);
 5030                        }
 5031                    }
 5032                });
 5033            }
 5034        }
 5035    }
 5036
 5037    pub fn active_call(&self) -> Option<&Entity<ActiveCall>> {
 5038        self.active_call.as_ref().map(|(call, _)| call)
 5039    }
 5040
 5041    fn on_active_call_event(
 5042        &mut self,
 5043        _: &Entity<ActiveCall>,
 5044        event: &call::room::Event,
 5045        window: &mut Window,
 5046        cx: &mut Context<Self>,
 5047    ) {
 5048        match event {
 5049            call::room::Event::ParticipantLocationChanged { participant_id }
 5050            | call::room::Event::RemoteVideoTracksChanged { participant_id } => {
 5051                self.leader_updated(participant_id, window, cx);
 5052            }
 5053            _ => {}
 5054        }
 5055    }
 5056
 5057    pub fn database_id(&self) -> Option<WorkspaceId> {
 5058        self.database_id
 5059    }
 5060
 5061    pub fn session_id(&self) -> Option<String> {
 5062        self.session_id.clone()
 5063    }
 5064
 5065    fn local_paths(&self, cx: &App) -> Option<Vec<Arc<Path>>> {
 5066        let project = self.project().read(cx);
 5067
 5068        if project.is_local() {
 5069            Some(
 5070                project
 5071                    .visible_worktrees(cx)
 5072                    .map(|worktree| worktree.read(cx).abs_path())
 5073                    .collect::<Vec<_>>(),
 5074            )
 5075        } else {
 5076            None
 5077        }
 5078    }
 5079
 5080    fn update_ssh_paths(&mut self, cx: &App) {
 5081        let project = self.project().read(cx);
 5082        if !project.is_local() {
 5083            let paths: Vec<String> = project
 5084                .visible_worktrees(cx)
 5085                .map(|worktree| worktree.read(cx).abs_path().to_string_lossy().to_string())
 5086                .collect();
 5087            if let Some(ssh_project) = &mut self.serialized_ssh_project {
 5088                ssh_project.paths = paths;
 5089            }
 5090        }
 5091    }
 5092
 5093    fn serialize_ssh_paths(&mut self, window: &mut Window, cx: &mut Context<Workspace>) {
 5094        if self._schedule_serialize_ssh_paths.is_none() {
 5095            self._schedule_serialize_ssh_paths =
 5096                Some(cx.spawn_in(window, async move |this, cx| {
 5097                    cx.background_executor()
 5098                        .timer(SERIALIZATION_THROTTLE_TIME)
 5099                        .await;
 5100                    this.update_in(cx, |this, window, cx| {
 5101                        let task = if let Some(ssh_project) = &this.serialized_ssh_project {
 5102                            let ssh_project_id = ssh_project.id;
 5103                            let ssh_project_paths = ssh_project.paths.clone();
 5104                            window.spawn(cx, async move |_| {
 5105                                persistence::DB
 5106                                    .update_ssh_project_paths(ssh_project_id, ssh_project_paths)
 5107                                    .await
 5108                            })
 5109                        } else {
 5110                            Task::ready(Err(anyhow::anyhow!("No SSH project to serialize")))
 5111                        };
 5112                        task.detach();
 5113                        this._schedule_serialize_ssh_paths.take();
 5114                    })
 5115                    .log_err();
 5116                }));
 5117        }
 5118    }
 5119
 5120    fn remove_panes(&mut self, member: Member, window: &mut Window, cx: &mut Context<Workspace>) {
 5121        match member {
 5122            Member::Axis(PaneAxis { members, .. }) => {
 5123                for child in members.iter() {
 5124                    self.remove_panes(child.clone(), window, cx)
 5125                }
 5126            }
 5127            Member::Pane(pane) => {
 5128                self.force_remove_pane(&pane, &None, window, cx);
 5129            }
 5130        }
 5131    }
 5132
 5133    fn remove_from_session(&mut self, window: &mut Window, cx: &mut App) -> Task<()> {
 5134        self.session_id.take();
 5135        self.serialize_workspace_internal(window, cx)
 5136    }
 5137
 5138    fn force_remove_pane(
 5139        &mut self,
 5140        pane: &Entity<Pane>,
 5141        focus_on: &Option<Entity<Pane>>,
 5142        window: &mut Window,
 5143        cx: &mut Context<Workspace>,
 5144    ) {
 5145        self.panes.retain(|p| p != pane);
 5146        if let Some(focus_on) = focus_on {
 5147            focus_on.update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5148        } else {
 5149            if self.active_pane() == pane {
 5150                self.panes
 5151                    .last()
 5152                    .unwrap()
 5153                    .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5154            }
 5155        }
 5156        if self.last_active_center_pane == Some(pane.downgrade()) {
 5157            self.last_active_center_pane = None;
 5158        }
 5159        cx.notify();
 5160    }
 5161
 5162    fn serialize_workspace(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5163        if self._schedule_serialize_workspace.is_none() {
 5164            self._schedule_serialize_workspace =
 5165                Some(cx.spawn_in(window, async move |this, cx| {
 5166                    cx.background_executor()
 5167                        .timer(SERIALIZATION_THROTTLE_TIME)
 5168                        .await;
 5169                    this.update_in(cx, |this, window, cx| {
 5170                        this.serialize_workspace_internal(window, cx).detach();
 5171                        this._schedule_serialize_workspace.take();
 5172                    })
 5173                    .log_err();
 5174                }));
 5175        }
 5176    }
 5177
 5178    fn serialize_workspace_internal(&self, window: &mut Window, cx: &mut App) -> Task<()> {
 5179        let Some(database_id) = self.database_id() else {
 5180            return Task::ready(());
 5181        };
 5182
 5183        fn serialize_pane_handle(
 5184            pane_handle: &Entity<Pane>,
 5185            window: &mut Window,
 5186            cx: &mut App,
 5187        ) -> SerializedPane {
 5188            let (items, active, pinned_count) = {
 5189                let pane = pane_handle.read(cx);
 5190                let active_item_id = pane.active_item().map(|item| item.item_id());
 5191                (
 5192                    pane.items()
 5193                        .filter_map(|handle| {
 5194                            let handle = handle.to_serializable_item_handle(cx)?;
 5195
 5196                            Some(SerializedItem {
 5197                                kind: Arc::from(handle.serialized_item_kind()),
 5198                                item_id: handle.item_id().as_u64(),
 5199                                active: Some(handle.item_id()) == active_item_id,
 5200                                preview: pane.is_active_preview_item(handle.item_id()),
 5201                            })
 5202                        })
 5203                        .collect::<Vec<_>>(),
 5204                    pane.has_focus(window, cx),
 5205                    pane.pinned_count(),
 5206                )
 5207            };
 5208
 5209            SerializedPane::new(items, active, pinned_count)
 5210        }
 5211
 5212        fn build_serialized_pane_group(
 5213            pane_group: &Member,
 5214            window: &mut Window,
 5215            cx: &mut App,
 5216        ) -> SerializedPaneGroup {
 5217            match pane_group {
 5218                Member::Axis(PaneAxis {
 5219                    axis,
 5220                    members,
 5221                    flexes,
 5222                    bounding_boxes: _,
 5223                }) => SerializedPaneGroup::Group {
 5224                    axis: SerializedAxis(*axis),
 5225                    children: members
 5226                        .iter()
 5227                        .map(|member| build_serialized_pane_group(member, window, cx))
 5228                        .collect::<Vec<_>>(),
 5229                    flexes: Some(flexes.lock().clone()),
 5230                },
 5231                Member::Pane(pane_handle) => {
 5232                    SerializedPaneGroup::Pane(serialize_pane_handle(pane_handle, window, cx))
 5233                }
 5234            }
 5235        }
 5236
 5237        fn build_serialized_docks(
 5238            this: &Workspace,
 5239            window: &mut Window,
 5240            cx: &mut App,
 5241        ) -> DockStructure {
 5242            let left_dock = this.left_dock.read(cx);
 5243            let left_visible = left_dock.is_open();
 5244            let left_active_panel = left_dock
 5245                .active_panel()
 5246                .map(|panel| panel.persistent_name().to_string());
 5247            let left_dock_zoom = left_dock
 5248                .active_panel()
 5249                .map(|panel| panel.is_zoomed(window, cx))
 5250                .unwrap_or(false);
 5251
 5252            let right_dock = this.right_dock.read(cx);
 5253            let right_visible = right_dock.is_open();
 5254            let right_active_panel = right_dock
 5255                .active_panel()
 5256                .map(|panel| panel.persistent_name().to_string());
 5257            let right_dock_zoom = right_dock
 5258                .active_panel()
 5259                .map(|panel| panel.is_zoomed(window, cx))
 5260                .unwrap_or(false);
 5261
 5262            let bottom_dock = this.bottom_dock.read(cx);
 5263            let bottom_visible = bottom_dock.is_open();
 5264            let bottom_active_panel = bottom_dock
 5265                .active_panel()
 5266                .map(|panel| panel.persistent_name().to_string());
 5267            let bottom_dock_zoom = bottom_dock
 5268                .active_panel()
 5269                .map(|panel| panel.is_zoomed(window, cx))
 5270                .unwrap_or(false);
 5271
 5272            DockStructure {
 5273                left: DockData {
 5274                    visible: left_visible,
 5275                    active_panel: left_active_panel,
 5276                    zoom: left_dock_zoom,
 5277                },
 5278                right: DockData {
 5279                    visible: right_visible,
 5280                    active_panel: right_active_panel,
 5281                    zoom: right_dock_zoom,
 5282                },
 5283                bottom: DockData {
 5284                    visible: bottom_visible,
 5285                    active_panel: bottom_active_panel,
 5286                    zoom: bottom_dock_zoom,
 5287                },
 5288            }
 5289        }
 5290
 5291        match self.serialize_workspace_location(cx) {
 5292            WorkspaceLocation::Location(location) => {
 5293                let breakpoints = self.project.update(cx, |project, cx| {
 5294                    project
 5295                        .breakpoint_store()
 5296                        .read(cx)
 5297                        .all_source_breakpoints(cx)
 5298                });
 5299
 5300                let center_group = build_serialized_pane_group(&self.center.root, window, cx);
 5301                let docks = build_serialized_docks(self, window, cx);
 5302                let window_bounds = Some(SerializedWindowBounds(window.window_bounds()));
 5303                let serialized_workspace = SerializedWorkspace {
 5304                    id: database_id,
 5305                    location,
 5306                    center_group,
 5307                    window_bounds,
 5308                    display: Default::default(),
 5309                    docks,
 5310                    centered_layout: self.centered_layout,
 5311                    session_id: self.session_id.clone(),
 5312                    breakpoints,
 5313                    window_id: Some(window.window_handle().window_id().as_u64()),
 5314                };
 5315
 5316                window.spawn(cx, async move |_| {
 5317                    persistence::DB.save_workspace(serialized_workspace).await;
 5318                })
 5319            }
 5320            WorkspaceLocation::DetachFromSession => window.spawn(cx, async move |_| {
 5321                persistence::DB
 5322                    .set_session_id(database_id, None)
 5323                    .await
 5324                    .log_err();
 5325            }),
 5326            WorkspaceLocation::None => Task::ready(()),
 5327        }
 5328    }
 5329
 5330    fn serialize_workspace_location(&self, cx: &App) -> WorkspaceLocation {
 5331        if let Some(ssh_project) = &self.serialized_ssh_project {
 5332            WorkspaceLocation::Location(SerializedWorkspaceLocation::Ssh(ssh_project.clone()))
 5333        } else if let Some(local_paths) = self.local_paths(cx) {
 5334            if !local_paths.is_empty() {
 5335                WorkspaceLocation::Location(SerializedWorkspaceLocation::from_local_paths(
 5336                    local_paths,
 5337                ))
 5338            } else {
 5339                WorkspaceLocation::DetachFromSession
 5340            }
 5341        } else {
 5342            WorkspaceLocation::None
 5343        }
 5344    }
 5345
 5346    fn update_history(&self, cx: &mut App) {
 5347        let Some(id) = self.database_id() else {
 5348            return;
 5349        };
 5350        let location = match self.serialize_workspace_location(cx) {
 5351            WorkspaceLocation::Location(location) => location,
 5352            _ => return,
 5353        };
 5354        if let Some(manager) = HistoryManager::global(cx) {
 5355            manager.update(cx, |this, cx| {
 5356                this.update_history(id, HistoryManagerEntry::new(id, &location), cx);
 5357            });
 5358        }
 5359    }
 5360
 5361    async fn serialize_items(
 5362        this: &WeakEntity<Self>,
 5363        items_rx: UnboundedReceiver<Box<dyn SerializableItemHandle>>,
 5364        cx: &mut AsyncWindowContext,
 5365    ) -> Result<()> {
 5366        const CHUNK_SIZE: usize = 200;
 5367
 5368        let mut serializable_items = items_rx.ready_chunks(CHUNK_SIZE);
 5369
 5370        while let Some(items_received) = serializable_items.next().await {
 5371            let unique_items =
 5372                items_received
 5373                    .into_iter()
 5374                    .fold(HashMap::default(), |mut acc, item| {
 5375                        acc.entry(item.item_id()).or_insert(item);
 5376                        acc
 5377                    });
 5378
 5379            // We use into_iter() here so that the references to the items are moved into
 5380            // the tasks and not kept alive while we're sleeping.
 5381            for (_, item) in unique_items.into_iter() {
 5382                if let Ok(Some(task)) = this.update_in(cx, |workspace, window, cx| {
 5383                    item.serialize(workspace, false, window, cx)
 5384                }) {
 5385                    cx.background_spawn(async move { task.await.log_err() })
 5386                        .detach();
 5387                }
 5388            }
 5389
 5390            cx.background_executor()
 5391                .timer(SERIALIZATION_THROTTLE_TIME)
 5392                .await;
 5393        }
 5394
 5395        Ok(())
 5396    }
 5397
 5398    pub(crate) fn enqueue_item_serialization(
 5399        &mut self,
 5400        item: Box<dyn SerializableItemHandle>,
 5401    ) -> Result<()> {
 5402        self.serializable_items_tx
 5403            .unbounded_send(item)
 5404            .map_err(|err| anyhow!("failed to send serializable item over channel: {err}"))
 5405    }
 5406
 5407    pub(crate) fn load_workspace(
 5408        serialized_workspace: SerializedWorkspace,
 5409        paths_to_open: Vec<Option<ProjectPath>>,
 5410        window: &mut Window,
 5411        cx: &mut Context<Workspace>,
 5412    ) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 5413        cx.spawn_in(window, async move |workspace, cx| {
 5414            let project = workspace.read_with(cx, |workspace, _| workspace.project().clone())?;
 5415
 5416            let mut center_group = None;
 5417            let mut center_items = None;
 5418
 5419            // Traverse the splits tree and add to things
 5420            if let Some((group, active_pane, items)) = serialized_workspace
 5421                .center_group
 5422                .deserialize(&project, serialized_workspace.id, workspace.clone(), cx)
 5423                .await
 5424            {
 5425                center_items = Some(items);
 5426                center_group = Some((group, active_pane))
 5427            }
 5428
 5429            let mut items_by_project_path = HashMap::default();
 5430            let mut item_ids_by_kind = HashMap::default();
 5431            let mut all_deserialized_items = Vec::default();
 5432            cx.update(|_, cx| {
 5433                for item in center_items.unwrap_or_default().into_iter().flatten() {
 5434                    if let Some(serializable_item_handle) = item.to_serializable_item_handle(cx) {
 5435                        item_ids_by_kind
 5436                            .entry(serializable_item_handle.serialized_item_kind())
 5437                            .or_insert(Vec::new())
 5438                            .push(item.item_id().as_u64() as ItemId);
 5439                    }
 5440
 5441                    if let Some(project_path) = item.project_path(cx) {
 5442                        items_by_project_path.insert(project_path, item.clone());
 5443                    }
 5444                    all_deserialized_items.push(item);
 5445                }
 5446            })?;
 5447
 5448            let opened_items = paths_to_open
 5449                .into_iter()
 5450                .map(|path_to_open| {
 5451                    path_to_open
 5452                        .and_then(|path_to_open| items_by_project_path.remove(&path_to_open))
 5453                })
 5454                .collect::<Vec<_>>();
 5455
 5456            // Remove old panes from workspace panes list
 5457            workspace.update_in(cx, |workspace, window, cx| {
 5458                if let Some((center_group, active_pane)) = center_group {
 5459                    workspace.remove_panes(workspace.center.root.clone(), window, cx);
 5460
 5461                    // Swap workspace center group
 5462                    workspace.center = PaneGroup::with_root(center_group);
 5463                    if let Some(active_pane) = active_pane {
 5464                        workspace.set_active_pane(&active_pane, window, cx);
 5465                        cx.focus_self(window);
 5466                    } else {
 5467                        workspace.set_active_pane(&workspace.center.first_pane(), window, cx);
 5468                    }
 5469                }
 5470
 5471                let docks = serialized_workspace.docks;
 5472
 5473                for (dock, serialized_dock) in [
 5474                    (&mut workspace.right_dock, docks.right),
 5475                    (&mut workspace.left_dock, docks.left),
 5476                    (&mut workspace.bottom_dock, docks.bottom),
 5477                ]
 5478                .iter_mut()
 5479                {
 5480                    dock.update(cx, |dock, cx| {
 5481                        dock.serialized_dock = Some(serialized_dock.clone());
 5482                        dock.restore_state(window, cx);
 5483                    });
 5484                }
 5485
 5486                cx.notify();
 5487            })?;
 5488
 5489            let _ = project
 5490                .update(cx, |project, cx| {
 5491                    project
 5492                        .breakpoint_store()
 5493                        .update(cx, |breakpoint_store, cx| {
 5494                            breakpoint_store
 5495                                .with_serialized_breakpoints(serialized_workspace.breakpoints, cx)
 5496                        })
 5497                })?
 5498                .await;
 5499
 5500            // Clean up all the items that have _not_ been loaded. Our ItemIds aren't stable. That means
 5501            // after loading the items, we might have different items and in order to avoid
 5502            // the database filling up, we delete items that haven't been loaded now.
 5503            //
 5504            // The items that have been loaded, have been saved after they've been added to the workspace.
 5505            let clean_up_tasks = workspace.update_in(cx, |_, window, cx| {
 5506                item_ids_by_kind
 5507                    .into_iter()
 5508                    .map(|(item_kind, loaded_items)| {
 5509                        SerializableItemRegistry::cleanup(
 5510                            item_kind,
 5511                            serialized_workspace.id,
 5512                            loaded_items,
 5513                            window,
 5514                            cx,
 5515                        )
 5516                        .log_err()
 5517                    })
 5518                    .collect::<Vec<_>>()
 5519            })?;
 5520
 5521            futures::future::join_all(clean_up_tasks).await;
 5522
 5523            workspace
 5524                .update_in(cx, |workspace, window, cx| {
 5525                    // Serialize ourself to make sure our timestamps and any pane / item changes are replicated
 5526                    workspace.serialize_workspace_internal(window, cx).detach();
 5527
 5528                    // Ensure that we mark the window as edited if we did load dirty items
 5529                    workspace.update_window_edited(window, cx);
 5530                })
 5531                .ok();
 5532
 5533            Ok(opened_items)
 5534        })
 5535    }
 5536
 5537    fn actions(&self, div: Div, window: &mut Window, cx: &mut Context<Self>) -> Div {
 5538        self.add_workspace_actions_listeners(div, window, cx)
 5539            .on_action(cx.listener(Self::close_inactive_items_and_panes))
 5540            .on_action(cx.listener(Self::close_all_items_and_panes))
 5541            .on_action(cx.listener(Self::save_all))
 5542            .on_action(cx.listener(Self::send_keystrokes))
 5543            .on_action(cx.listener(Self::add_folder_to_project))
 5544            .on_action(cx.listener(Self::follow_next_collaborator))
 5545            .on_action(cx.listener(Self::close_window))
 5546            .on_action(cx.listener(Self::activate_pane_at_index))
 5547            .on_action(cx.listener(Self::move_item_to_pane_at_index))
 5548            .on_action(cx.listener(Self::move_focused_panel_to_next_position))
 5549            .on_action(cx.listener(|workspace, _: &Unfollow, window, cx| {
 5550                let pane = workspace.active_pane().clone();
 5551                workspace.unfollow_in_pane(&pane, window, cx);
 5552            }))
 5553            .on_action(cx.listener(|workspace, action: &Save, window, cx| {
 5554                workspace
 5555                    .save_active_item(action.save_intent.unwrap_or(SaveIntent::Save), window, cx)
 5556                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5557            }))
 5558            .on_action(cx.listener(|workspace, _: &SaveWithoutFormat, window, cx| {
 5559                workspace
 5560                    .save_active_item(SaveIntent::SaveWithoutFormat, window, cx)
 5561                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5562            }))
 5563            .on_action(cx.listener(|workspace, _: &SaveAs, window, cx| {
 5564                workspace
 5565                    .save_active_item(SaveIntent::SaveAs, window, cx)
 5566                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5567            }))
 5568            .on_action(
 5569                cx.listener(|workspace, _: &ActivatePreviousPane, window, cx| {
 5570                    workspace.activate_previous_pane(window, cx)
 5571                }),
 5572            )
 5573            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5574                workspace.activate_next_pane(window, cx)
 5575            }))
 5576            .on_action(
 5577                cx.listener(|workspace, _: &ActivateNextWindow, _window, cx| {
 5578                    workspace.activate_next_window(cx)
 5579                }),
 5580            )
 5581            .on_action(
 5582                cx.listener(|workspace, _: &ActivatePreviousWindow, _window, cx| {
 5583                    workspace.activate_previous_window(cx)
 5584                }),
 5585            )
 5586            .on_action(cx.listener(|workspace, _: &ActivatePaneLeft, window, cx| {
 5587                workspace.activate_pane_in_direction(SplitDirection::Left, window, cx)
 5588            }))
 5589            .on_action(cx.listener(|workspace, _: &ActivatePaneRight, window, cx| {
 5590                workspace.activate_pane_in_direction(SplitDirection::Right, window, cx)
 5591            }))
 5592            .on_action(cx.listener(|workspace, _: &ActivatePaneUp, window, cx| {
 5593                workspace.activate_pane_in_direction(SplitDirection::Up, window, cx)
 5594            }))
 5595            .on_action(cx.listener(|workspace, _: &ActivatePaneDown, window, cx| {
 5596                workspace.activate_pane_in_direction(SplitDirection::Down, window, cx)
 5597            }))
 5598            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5599                workspace.activate_next_pane(window, cx)
 5600            }))
 5601            .on_action(cx.listener(
 5602                |workspace, action: &MoveItemToPaneInDirection, window, cx| {
 5603                    workspace.move_item_to_pane_in_direction(action, window, cx)
 5604                },
 5605            ))
 5606            .on_action(cx.listener(|workspace, _: &SwapPaneLeft, _, cx| {
 5607                workspace.swap_pane_in_direction(SplitDirection::Left, cx)
 5608            }))
 5609            .on_action(cx.listener(|workspace, _: &SwapPaneRight, _, cx| {
 5610                workspace.swap_pane_in_direction(SplitDirection::Right, cx)
 5611            }))
 5612            .on_action(cx.listener(|workspace, _: &SwapPaneUp, _, cx| {
 5613                workspace.swap_pane_in_direction(SplitDirection::Up, cx)
 5614            }))
 5615            .on_action(cx.listener(|workspace, _: &SwapPaneDown, _, cx| {
 5616                workspace.swap_pane_in_direction(SplitDirection::Down, cx)
 5617            }))
 5618            .on_action(cx.listener(|this, _: &ToggleLeftDock, window, cx| {
 5619                this.toggle_dock(DockPosition::Left, window, cx);
 5620            }))
 5621            .on_action(cx.listener(
 5622                |workspace: &mut Workspace, _: &ToggleRightDock, window, cx| {
 5623                    workspace.toggle_dock(DockPosition::Right, window, cx);
 5624                },
 5625            ))
 5626            .on_action(cx.listener(
 5627                |workspace: &mut Workspace, _: &ToggleBottomDock, window, cx| {
 5628                    workspace.toggle_dock(DockPosition::Bottom, window, cx);
 5629                },
 5630            ))
 5631            .on_action(cx.listener(
 5632                |workspace: &mut Workspace, _: &CloseActiveDock, window, cx| {
 5633                    if !workspace.close_active_dock(window, cx) {
 5634                        cx.propagate();
 5635                    }
 5636                },
 5637            ))
 5638            .on_action(
 5639                cx.listener(|workspace: &mut Workspace, _: &CloseAllDocks, window, cx| {
 5640                    workspace.close_all_docks(window, cx);
 5641                }),
 5642            )
 5643            .on_action(cx.listener(
 5644                |workspace: &mut Workspace, _: &ClearAllNotifications, _, cx| {
 5645                    workspace.clear_all_notifications(cx);
 5646                },
 5647            ))
 5648            .on_action(cx.listener(
 5649                |workspace: &mut Workspace, _: &SuppressNotification, _, cx| {
 5650                    if let Some((notification_id, _)) = workspace.notifications.pop() {
 5651                        workspace.suppress_notification(&notification_id, cx);
 5652                    }
 5653                },
 5654            ))
 5655            .on_action(cx.listener(
 5656                |workspace: &mut Workspace, _: &ReopenClosedItem, window, cx| {
 5657                    workspace.reopen_closed_item(window, cx).detach();
 5658                },
 5659            ))
 5660            .on_action(cx.listener(
 5661                |workspace: &mut Workspace, _: &ResetActiveDockSize, window, cx| {
 5662                    for dock in workspace.all_docks() {
 5663                        if dock.focus_handle(cx).contains_focused(window, cx) {
 5664                            let Some(panel) = dock.read(cx).active_panel() else {
 5665                                return;
 5666                            };
 5667
 5668                            // Set to `None`, then the size will fall back to the default.
 5669                            panel.clone().set_size(None, window, cx);
 5670
 5671                            return;
 5672                        }
 5673                    }
 5674                },
 5675            ))
 5676            .on_action(cx.listener(
 5677                |workspace: &mut Workspace, _: &ResetOpenDocksSize, window, cx| {
 5678                    for dock in workspace.all_docks() {
 5679                        if let Some(panel) = dock.read(cx).visible_panel() {
 5680                            // Set to `None`, then the size will fall back to the default.
 5681                            panel.clone().set_size(None, window, cx);
 5682                        }
 5683                    }
 5684                },
 5685            ))
 5686            .on_action(cx.listener(
 5687                |workspace: &mut Workspace, act: &IncreaseActiveDockSize, window, cx| {
 5688                    adjust_active_dock_size_by_px(
 5689                        px_with_ui_font_fallback(act.px, cx),
 5690                        workspace,
 5691                        window,
 5692                        cx,
 5693                    );
 5694                },
 5695            ))
 5696            .on_action(cx.listener(
 5697                |workspace: &mut Workspace, act: &DecreaseActiveDockSize, window, cx| {
 5698                    adjust_active_dock_size_by_px(
 5699                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5700                        workspace,
 5701                        window,
 5702                        cx,
 5703                    );
 5704                },
 5705            ))
 5706            .on_action(cx.listener(
 5707                |workspace: &mut Workspace, act: &IncreaseOpenDocksSize, window, cx| {
 5708                    adjust_open_docks_size_by_px(
 5709                        px_with_ui_font_fallback(act.px, cx),
 5710                        workspace,
 5711                        window,
 5712                        cx,
 5713                    );
 5714                },
 5715            ))
 5716            .on_action(cx.listener(
 5717                |workspace: &mut Workspace, act: &DecreaseOpenDocksSize, window, cx| {
 5718                    adjust_open_docks_size_by_px(
 5719                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5720                        workspace,
 5721                        window,
 5722                        cx,
 5723                    );
 5724                },
 5725            ))
 5726            .on_action(cx.listener(Workspace::toggle_centered_layout))
 5727            .on_action(cx.listener(Workspace::cancel))
 5728    }
 5729
 5730    #[cfg(any(test, feature = "test-support"))]
 5731    pub fn test_new(project: Entity<Project>, window: &mut Window, cx: &mut Context<Self>) -> Self {
 5732        use node_runtime::NodeRuntime;
 5733        use session::Session;
 5734
 5735        let client = project.read(cx).client();
 5736        let user_store = project.read(cx).user_store();
 5737        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 5738        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 5739        window.activate_window();
 5740        let app_state = Arc::new(AppState {
 5741            languages: project.read(cx).languages().clone(),
 5742            workspace_store,
 5743            client,
 5744            user_store,
 5745            fs: project.read(cx).fs().clone(),
 5746            build_window_options: |_, _| Default::default(),
 5747            node_runtime: NodeRuntime::unavailable(),
 5748            session,
 5749        });
 5750        let workspace = Self::new(Default::default(), project, app_state, window, cx);
 5751        workspace
 5752            .active_pane
 5753            .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5754        workspace
 5755    }
 5756
 5757    pub fn register_action<A: Action>(
 5758        &mut self,
 5759        callback: impl Fn(&mut Self, &A, &mut Window, &mut Context<Self>) + 'static,
 5760    ) -> &mut Self {
 5761        let callback = Arc::new(callback);
 5762
 5763        self.workspace_actions.push(Box::new(move |div, _, _, cx| {
 5764            let callback = callback.clone();
 5765            div.on_action(cx.listener(move |workspace, event, window, cx| {
 5766                (callback)(workspace, event, window, cx)
 5767            }))
 5768        }));
 5769        self
 5770    }
 5771    pub fn register_action_renderer(
 5772        &mut self,
 5773        callback: impl Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div + 'static,
 5774    ) -> &mut Self {
 5775        self.workspace_actions.push(Box::new(callback));
 5776        self
 5777    }
 5778
 5779    fn add_workspace_actions_listeners(
 5780        &self,
 5781        mut div: Div,
 5782        window: &mut Window,
 5783        cx: &mut Context<Self>,
 5784    ) -> Div {
 5785        for action in self.workspace_actions.iter() {
 5786            div = (action)(div, self, window, cx)
 5787        }
 5788        div
 5789    }
 5790
 5791    pub fn has_active_modal(&self, _: &mut Window, cx: &mut App) -> bool {
 5792        self.modal_layer.read(cx).has_active_modal()
 5793    }
 5794
 5795    pub fn active_modal<V: ManagedView + 'static>(&self, cx: &App) -> Option<Entity<V>> {
 5796        self.modal_layer.read(cx).active_modal()
 5797    }
 5798
 5799    pub fn toggle_modal<V: ModalView, B>(&mut self, window: &mut Window, cx: &mut App, build: B)
 5800    where
 5801        B: FnOnce(&mut Window, &mut Context<V>) -> V,
 5802    {
 5803        self.modal_layer.update(cx, |modal_layer, cx| {
 5804            modal_layer.toggle_modal(window, cx, build)
 5805        })
 5806    }
 5807
 5808    pub fn toggle_status_toast<V: ToastView>(&mut self, entity: Entity<V>, cx: &mut App) {
 5809        self.toast_layer
 5810            .update(cx, |toast_layer, cx| toast_layer.toggle_toast(cx, entity))
 5811    }
 5812
 5813    pub fn toggle_centered_layout(
 5814        &mut self,
 5815        _: &ToggleCenteredLayout,
 5816        _: &mut Window,
 5817        cx: &mut Context<Self>,
 5818    ) {
 5819        self.centered_layout = !self.centered_layout;
 5820        if let Some(database_id) = self.database_id() {
 5821            cx.background_spawn(DB.set_centered_layout(database_id, self.centered_layout))
 5822                .detach_and_log_err(cx);
 5823        }
 5824        cx.notify();
 5825    }
 5826
 5827    fn adjust_padding(padding: Option<f32>) -> f32 {
 5828        padding
 5829            .unwrap_or(Self::DEFAULT_PADDING)
 5830            .clamp(0.0, Self::MAX_PADDING)
 5831    }
 5832
 5833    fn render_dock(
 5834        &self,
 5835        position: DockPosition,
 5836        dock: &Entity<Dock>,
 5837        window: &mut Window,
 5838        cx: &mut App,
 5839    ) -> Option<Div> {
 5840        if self.zoomed_position == Some(position) {
 5841            return None;
 5842        }
 5843
 5844        let leader_border = dock.read(cx).active_panel().and_then(|panel| {
 5845            let pane = panel.pane(cx)?;
 5846            let follower_states = &self.follower_states;
 5847            leader_border_for_pane(follower_states, &pane, window, cx)
 5848        });
 5849
 5850        Some(
 5851            div()
 5852                .flex()
 5853                .flex_none()
 5854                .overflow_hidden()
 5855                .child(dock.clone())
 5856                .children(leader_border),
 5857        )
 5858    }
 5859
 5860    pub fn for_window(window: &mut Window, _: &mut App) -> Option<Entity<Workspace>> {
 5861        window.root().flatten()
 5862    }
 5863
 5864    pub fn zoomed_item(&self) -> Option<&AnyWeakView> {
 5865        self.zoomed.as_ref()
 5866    }
 5867
 5868    pub fn activate_next_window(&mut self, cx: &mut Context<Self>) {
 5869        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 5870            return;
 5871        };
 5872        let windows = cx.windows();
 5873        let Some(next_window) = windows
 5874            .iter()
 5875            .cycle()
 5876            .skip_while(|window| window.window_id() != current_window_id)
 5877            .nth(1)
 5878        else {
 5879            return;
 5880        };
 5881        next_window
 5882            .update(cx, |_, window, _| window.activate_window())
 5883            .ok();
 5884    }
 5885
 5886    pub fn activate_previous_window(&mut self, cx: &mut Context<Self>) {
 5887        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 5888            return;
 5889        };
 5890        let windows = cx.windows();
 5891        let Some(prev_window) = windows
 5892            .iter()
 5893            .rev()
 5894            .cycle()
 5895            .skip_while(|window| window.window_id() != current_window_id)
 5896            .nth(1)
 5897        else {
 5898            return;
 5899        };
 5900        prev_window
 5901            .update(cx, |_, window, _| window.activate_window())
 5902            .ok();
 5903    }
 5904
 5905    pub fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
 5906        if cx.stop_active_drag(window) {
 5907            return;
 5908        } else if let Some((notification_id, _)) = self.notifications.pop() {
 5909            dismiss_app_notification(&notification_id, cx);
 5910        } else {
 5911            cx.propagate();
 5912        }
 5913    }
 5914
 5915    fn adjust_dock_size_by_px(
 5916        &mut self,
 5917        panel_size: Pixels,
 5918        dock_pos: DockPosition,
 5919        px: Pixels,
 5920        window: &mut Window,
 5921        cx: &mut Context<Self>,
 5922    ) {
 5923        match dock_pos {
 5924            DockPosition::Left => self.resize_left_dock(panel_size + px, window, cx),
 5925            DockPosition::Right => self.resize_right_dock(panel_size + px, window, cx),
 5926            DockPosition::Bottom => self.resize_bottom_dock(panel_size + px, window, cx),
 5927        }
 5928    }
 5929
 5930    fn resize_left_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5931        let size = new_size.min(self.bounds.right() - RESIZE_HANDLE_SIZE);
 5932
 5933        self.left_dock.update(cx, |left_dock, cx| {
 5934            if WorkspaceSettings::get_global(cx)
 5935                .resize_all_panels_in_dock
 5936                .contains(&DockPosition::Left)
 5937            {
 5938                left_dock.resize_all_panels(Some(size), window, cx);
 5939            } else {
 5940                left_dock.resize_active_panel(Some(size), window, cx);
 5941            }
 5942        });
 5943    }
 5944
 5945    fn resize_right_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5946        let mut size = new_size.max(self.bounds.left() - RESIZE_HANDLE_SIZE);
 5947        self.left_dock.read_with(cx, |left_dock, cx| {
 5948            let left_dock_size = left_dock
 5949                .active_panel_size(window, cx)
 5950                .unwrap_or(Pixels(0.0));
 5951            if left_dock_size + size > self.bounds.right() {
 5952                size = self.bounds.right() - left_dock_size
 5953            }
 5954        });
 5955        self.right_dock.update(cx, |right_dock, cx| {
 5956            if WorkspaceSettings::get_global(cx)
 5957                .resize_all_panels_in_dock
 5958                .contains(&DockPosition::Right)
 5959            {
 5960                right_dock.resize_all_panels(Some(size), window, cx);
 5961            } else {
 5962                right_dock.resize_active_panel(Some(size), window, cx);
 5963            }
 5964        });
 5965    }
 5966
 5967    fn resize_bottom_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5968        let size = new_size.min(self.bounds.bottom() - RESIZE_HANDLE_SIZE - self.bounds.top());
 5969        self.bottom_dock.update(cx, |bottom_dock, cx| {
 5970            if WorkspaceSettings::get_global(cx)
 5971                .resize_all_panels_in_dock
 5972                .contains(&DockPosition::Bottom)
 5973            {
 5974                bottom_dock.resize_all_panels(Some(size), window, cx);
 5975            } else {
 5976                bottom_dock.resize_active_panel(Some(size), window, cx);
 5977            }
 5978        });
 5979    }
 5980}
 5981
 5982fn leader_border_for_pane(
 5983    follower_states: &HashMap<CollaboratorId, FollowerState>,
 5984    pane: &Entity<Pane>,
 5985    _: &Window,
 5986    cx: &App,
 5987) -> Option<Div> {
 5988    let (leader_id, _follower_state) = follower_states.iter().find_map(|(leader_id, state)| {
 5989        if state.pane() == pane {
 5990            Some((*leader_id, state))
 5991        } else {
 5992            None
 5993        }
 5994    })?;
 5995
 5996    let mut leader_color = match leader_id {
 5997        CollaboratorId::PeerId(leader_peer_id) => {
 5998            let room = ActiveCall::try_global(cx)?.read(cx).room()?.read(cx);
 5999            let leader = room.remote_participant_for_peer_id(leader_peer_id)?;
 6000
 6001            cx.theme()
 6002                .players()
 6003                .color_for_participant(leader.participant_index.0)
 6004                .cursor
 6005        }
 6006        CollaboratorId::Agent => cx.theme().players().agent().cursor,
 6007    };
 6008    leader_color.fade_out(0.3);
 6009    Some(
 6010        div()
 6011            .absolute()
 6012            .size_full()
 6013            .left_0()
 6014            .top_0()
 6015            .border_2()
 6016            .border_color(leader_color),
 6017    )
 6018}
 6019
 6020fn window_bounds_env_override() -> Option<Bounds<Pixels>> {
 6021    ZED_WINDOW_POSITION
 6022        .zip(*ZED_WINDOW_SIZE)
 6023        .map(|(position, size)| Bounds {
 6024            origin: position,
 6025            size,
 6026        })
 6027}
 6028
 6029fn open_items(
 6030    serialized_workspace: Option<SerializedWorkspace>,
 6031    mut project_paths_to_open: Vec<(PathBuf, Option<ProjectPath>)>,
 6032    window: &mut Window,
 6033    cx: &mut Context<Workspace>,
 6034) -> impl 'static + Future<Output = Result<Vec<Option<Result<Box<dyn ItemHandle>>>>>> + use<> {
 6035    let restored_items = serialized_workspace.map(|serialized_workspace| {
 6036        Workspace::load_workspace(
 6037            serialized_workspace,
 6038            project_paths_to_open
 6039                .iter()
 6040                .map(|(_, project_path)| project_path)
 6041                .cloned()
 6042                .collect(),
 6043            window,
 6044            cx,
 6045        )
 6046    });
 6047
 6048    cx.spawn_in(window, async move |workspace, cx| {
 6049        let mut opened_items = Vec::with_capacity(project_paths_to_open.len());
 6050
 6051        if let Some(restored_items) = restored_items {
 6052            let restored_items = restored_items.await?;
 6053
 6054            let restored_project_paths = restored_items
 6055                .iter()
 6056                .filter_map(|item| {
 6057                    cx.update(|_, cx| item.as_ref()?.project_path(cx))
 6058                        .ok()
 6059                        .flatten()
 6060                })
 6061                .collect::<HashSet<_>>();
 6062
 6063            for restored_item in restored_items {
 6064                opened_items.push(restored_item.map(Ok));
 6065            }
 6066
 6067            project_paths_to_open
 6068                .iter_mut()
 6069                .for_each(|(_, project_path)| {
 6070                    if let Some(project_path_to_open) = project_path {
 6071                        if restored_project_paths.contains(project_path_to_open) {
 6072                            *project_path = None;
 6073                        }
 6074                    }
 6075                });
 6076        } else {
 6077            for _ in 0..project_paths_to_open.len() {
 6078                opened_items.push(None);
 6079            }
 6080        }
 6081        assert!(opened_items.len() == project_paths_to_open.len());
 6082
 6083        let tasks =
 6084            project_paths_to_open
 6085                .into_iter()
 6086                .enumerate()
 6087                .map(|(ix, (abs_path, project_path))| {
 6088                    let workspace = workspace.clone();
 6089                    cx.spawn(async move |cx| {
 6090                        let file_project_path = project_path?;
 6091                        let abs_path_task = workspace.update(cx, |workspace, cx| {
 6092                            workspace.project().update(cx, |project, cx| {
 6093                                project.resolve_abs_path(abs_path.to_string_lossy().as_ref(), cx)
 6094                            })
 6095                        });
 6096
 6097                        // We only want to open file paths here. If one of the items
 6098                        // here is a directory, it was already opened further above
 6099                        // with a `find_or_create_worktree`.
 6100                        if let Ok(task) = abs_path_task {
 6101                            if task.await.map_or(true, |p| p.is_file()) {
 6102                                return Some((
 6103                                    ix,
 6104                                    workspace
 6105                                        .update_in(cx, |workspace, window, cx| {
 6106                                            workspace.open_path(
 6107                                                file_project_path,
 6108                                                None,
 6109                                                true,
 6110                                                window,
 6111                                                cx,
 6112                                            )
 6113                                        })
 6114                                        .log_err()?
 6115                                        .await,
 6116                                ));
 6117                            }
 6118                        }
 6119                        None
 6120                    })
 6121                });
 6122
 6123        let tasks = tasks.collect::<Vec<_>>();
 6124
 6125        let tasks = futures::future::join_all(tasks);
 6126        for (ix, path_open_result) in tasks.await.into_iter().flatten() {
 6127            opened_items[ix] = Some(path_open_result);
 6128        }
 6129
 6130        Ok(opened_items)
 6131    })
 6132}
 6133
 6134enum ActivateInDirectionTarget {
 6135    Pane(Entity<Pane>),
 6136    Dock(Entity<Dock>),
 6137}
 6138
 6139fn notify_if_database_failed(workspace: WindowHandle<Workspace>, cx: &mut AsyncApp) {
 6140    workspace
 6141        .update(cx, |workspace, _, cx| {
 6142            if (*db::ALL_FILE_DB_FAILED).load(std::sync::atomic::Ordering::Acquire) {
 6143                struct DatabaseFailedNotification;
 6144
 6145                workspace.show_notification(
 6146                    NotificationId::unique::<DatabaseFailedNotification>(),
 6147                    cx,
 6148                    |cx| {
 6149                        cx.new(|cx| {
 6150                            MessageNotification::new("Failed to load the database file.", cx)
 6151                                .primary_message("File an Issue")
 6152                                .primary_icon(IconName::Plus)
 6153                                .primary_on_click(|window, cx| {
 6154                                    window.dispatch_action(Box::new(FileBugReport), cx)
 6155                                })
 6156                        })
 6157                    },
 6158                );
 6159            }
 6160        })
 6161        .log_err();
 6162}
 6163
 6164fn px_with_ui_font_fallback(val: u32, cx: &Context<Workspace>) -> Pixels {
 6165    if val == 0 {
 6166        ThemeSettings::get_global(cx).ui_font_size(cx)
 6167    } else {
 6168        px(val as f32)
 6169    }
 6170}
 6171
 6172fn adjust_active_dock_size_by_px(
 6173    px: Pixels,
 6174    workspace: &mut Workspace,
 6175    window: &mut Window,
 6176    cx: &mut Context<Workspace>,
 6177) {
 6178    let Some(active_dock) = workspace
 6179        .all_docks()
 6180        .into_iter()
 6181        .find(|dock| dock.focus_handle(cx).contains_focused(window, cx))
 6182    else {
 6183        return;
 6184    };
 6185    let dock = active_dock.read(cx);
 6186    let Some(panel_size) = dock.active_panel_size(window, cx) else {
 6187        return;
 6188    };
 6189    let dock_pos = dock.position();
 6190    workspace.adjust_dock_size_by_px(panel_size, dock_pos, px, window, cx);
 6191}
 6192
 6193fn adjust_open_docks_size_by_px(
 6194    px: Pixels,
 6195    workspace: &mut Workspace,
 6196    window: &mut Window,
 6197    cx: &mut Context<Workspace>,
 6198) {
 6199    let docks = workspace
 6200        .all_docks()
 6201        .into_iter()
 6202        .filter_map(|dock| {
 6203            if dock.read(cx).is_open() {
 6204                let dock = dock.read(cx);
 6205                let panel_size = dock.active_panel_size(window, cx)?;
 6206                let dock_pos = dock.position();
 6207                Some((panel_size, dock_pos, px))
 6208            } else {
 6209                None
 6210            }
 6211        })
 6212        .collect::<Vec<_>>();
 6213
 6214    docks
 6215        .into_iter()
 6216        .for_each(|(panel_size, dock_pos, offset)| {
 6217            workspace.adjust_dock_size_by_px(panel_size, dock_pos, offset, window, cx);
 6218        });
 6219}
 6220
 6221impl Focusable for Workspace {
 6222    fn focus_handle(&self, cx: &App) -> FocusHandle {
 6223        self.active_pane.focus_handle(cx)
 6224    }
 6225}
 6226
 6227#[derive(Clone)]
 6228struct DraggedDock(DockPosition);
 6229
 6230impl Render for DraggedDock {
 6231    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
 6232        gpui::Empty
 6233    }
 6234}
 6235
 6236impl Render for Workspace {
 6237    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 6238        let mut context = KeyContext::new_with_defaults();
 6239        context.add("Workspace");
 6240        context.set("keyboard_layout", cx.keyboard_layout().name().to_string());
 6241        if let Some(status) = self
 6242            .debugger_provider
 6243            .as_ref()
 6244            .and_then(|provider| provider.active_thread_state(cx))
 6245        {
 6246            match status {
 6247                ThreadStatus::Running | ThreadStatus::Stepping => {
 6248                    context.add("debugger_running");
 6249                }
 6250                ThreadStatus::Stopped => context.add("debugger_stopped"),
 6251                ThreadStatus::Exited | ThreadStatus::Ended => {}
 6252            }
 6253        }
 6254
 6255        let centered_layout = self.centered_layout
 6256            && self.center.panes().len() == 1
 6257            && self.active_item(cx).is_some();
 6258        let render_padding = |size| {
 6259            (size > 0.0).then(|| {
 6260                div()
 6261                    .h_full()
 6262                    .w(relative(size))
 6263                    .bg(cx.theme().colors().editor_background)
 6264                    .border_color(cx.theme().colors().pane_group_border)
 6265            })
 6266        };
 6267        let paddings = if centered_layout {
 6268            let settings = WorkspaceSettings::get_global(cx).centered_layout;
 6269            (
 6270                render_padding(Self::adjust_padding(settings.left_padding)),
 6271                render_padding(Self::adjust_padding(settings.right_padding)),
 6272            )
 6273        } else {
 6274            (None, None)
 6275        };
 6276        let ui_font = theme::setup_ui_font(window, cx);
 6277
 6278        let theme = cx.theme().clone();
 6279        let colors = theme.colors();
 6280        let notification_entities = self
 6281            .notifications
 6282            .iter()
 6283            .map(|(_, notification)| notification.entity_id())
 6284            .collect::<Vec<_>>();
 6285        let bottom_dock_layout = WorkspaceSettings::get_global(cx).bottom_dock_layout;
 6286
 6287        client_side_decorations(
 6288            self.actions(div(), window, cx)
 6289                .key_context(context)
 6290                .relative()
 6291                .size_full()
 6292                .flex()
 6293                .flex_col()
 6294                .font(ui_font)
 6295                .gap_0()
 6296                .justify_start()
 6297                .items_start()
 6298                .text_color(colors.text)
 6299                .overflow_hidden()
 6300                .children(self.titlebar_item.clone())
 6301                .on_modifiers_changed(move |_, _, cx| {
 6302                    for &id in &notification_entities {
 6303                        cx.notify(id);
 6304                    }
 6305                })
 6306                .child(
 6307                    div()
 6308                        .size_full()
 6309                        .relative()
 6310                        .flex_1()
 6311                        .flex()
 6312                        .flex_col()
 6313                        .child(
 6314                            div()
 6315                                .id("workspace")
 6316                                .bg(colors.background)
 6317                                .relative()
 6318                                .flex_1()
 6319                                .w_full()
 6320                                .flex()
 6321                                .flex_col()
 6322                                .overflow_hidden()
 6323                                .border_t_1()
 6324                                .border_b_1()
 6325                                .border_color(colors.border)
 6326                                .child({
 6327                                    let this = cx.entity().clone();
 6328                                    canvas(
 6329                                        move |bounds, window, cx| {
 6330                                            this.update(cx, |this, cx| {
 6331                                                let bounds_changed = this.bounds != bounds;
 6332                                                this.bounds = bounds;
 6333
 6334                                                if bounds_changed {
 6335                                                    this.left_dock.update(cx, |dock, cx| {
 6336                                                        dock.clamp_panel_size(
 6337                                                            bounds.size.width,
 6338                                                            window,
 6339                                                            cx,
 6340                                                        )
 6341                                                    });
 6342
 6343                                                    this.right_dock.update(cx, |dock, cx| {
 6344                                                        dock.clamp_panel_size(
 6345                                                            bounds.size.width,
 6346                                                            window,
 6347                                                            cx,
 6348                                                        )
 6349                                                    });
 6350
 6351                                                    this.bottom_dock.update(cx, |dock, cx| {
 6352                                                        dock.clamp_panel_size(
 6353                                                            bounds.size.height,
 6354                                                            window,
 6355                                                            cx,
 6356                                                        )
 6357                                                    });
 6358                                                }
 6359                                            })
 6360                                        },
 6361                                        |_, _, _, _| {},
 6362                                    )
 6363                                    .absolute()
 6364                                    .size_full()
 6365                                })
 6366                                .when(self.zoomed.is_none(), |this| {
 6367                                    this.on_drag_move(cx.listener(
 6368                                        move |workspace,
 6369                                              e: &DragMoveEvent<DraggedDock>,
 6370                                              window,
 6371                                              cx| {
 6372                                            if workspace.previous_dock_drag_coordinates
 6373                                                != Some(e.event.position)
 6374                                            {
 6375                                                workspace.previous_dock_drag_coordinates =
 6376                                                    Some(e.event.position);
 6377                                                match e.drag(cx).0 {
 6378                                                    DockPosition::Left => {
 6379                                                        workspace.resize_left_dock(
 6380                                                            e.event.position.x
 6381                                                                - workspace.bounds.left(),
 6382                                                            window,
 6383                                                            cx,
 6384                                                        );
 6385                                                    }
 6386                                                    DockPosition::Right => {
 6387                                                        workspace.resize_right_dock(
 6388                                                            workspace.bounds.right()
 6389                                                                - e.event.position.x,
 6390                                                            window,
 6391                                                            cx,
 6392                                                        );
 6393                                                    }
 6394                                                    DockPosition::Bottom => {
 6395                                                        workspace.resize_bottom_dock(
 6396                                                            workspace.bounds.bottom()
 6397                                                                - e.event.position.y,
 6398                                                            window,
 6399                                                            cx,
 6400                                                        );
 6401                                                    }
 6402                                                };
 6403                                                workspace.serialize_workspace(window, cx);
 6404                                            }
 6405                                        },
 6406                                    ))
 6407                                })
 6408                                .child({
 6409                                    match bottom_dock_layout {
 6410                                        BottomDockLayout::Full => div()
 6411                                            .flex()
 6412                                            .flex_col()
 6413                                            .h_full()
 6414                                            .child(
 6415                                                div()
 6416                                                    .flex()
 6417                                                    .flex_row()
 6418                                                    .flex_1()
 6419                                                    .overflow_hidden()
 6420                                                    .children(self.render_dock(
 6421                                                        DockPosition::Left,
 6422                                                        &self.left_dock,
 6423                                                        window,
 6424                                                        cx,
 6425                                                    ))
 6426                                                    .child(
 6427                                                        div()
 6428                                                            .flex()
 6429                                                            .flex_col()
 6430                                                            .flex_1()
 6431                                                            .overflow_hidden()
 6432                                                            .child(
 6433                                                                h_flex()
 6434                                                                    .flex_1()
 6435                                                                    .when_some(
 6436                                                                        paddings.0,
 6437                                                                        |this, p| {
 6438                                                                            this.child(
 6439                                                                                p.border_r_1(),
 6440                                                                            )
 6441                                                                        },
 6442                                                                    )
 6443                                                                    .child(self.center.render(
 6444                                                                        self.zoomed.as_ref(),
 6445                                                                        &PaneRenderContext {
 6446                                                                            follower_states:
 6447                                                                                &self.follower_states,
 6448                                                                            active_call: self.active_call(),
 6449                                                                            active_pane: &self.active_pane,
 6450                                                                            app_state: &self.app_state,
 6451                                                                            project: &self.project,
 6452                                                                            workspace: &self.weak_self,
 6453                                                                        },
 6454                                                                        window,
 6455                                                                        cx,
 6456                                                                    ))
 6457                                                                    .when_some(
 6458                                                                        paddings.1,
 6459                                                                        |this, p| {
 6460                                                                            this.child(
 6461                                                                                p.border_l_1(),
 6462                                                                            )
 6463                                                                        },
 6464                                                                    ),
 6465                                                            ),
 6466                                                    )
 6467                                                    .children(self.render_dock(
 6468                                                        DockPosition::Right,
 6469                                                        &self.right_dock,
 6470                                                        window,
 6471                                                        cx,
 6472                                                    )),
 6473                                            )
 6474                                            .child(div().w_full().children(self.render_dock(
 6475                                                DockPosition::Bottom,
 6476                                                &self.bottom_dock,
 6477                                                window,
 6478                                                cx
 6479                                            ))),
 6480
 6481                                        BottomDockLayout::LeftAligned => div()
 6482                                            .flex()
 6483                                            .flex_row()
 6484                                            .h_full()
 6485                                            .child(
 6486                                                div()
 6487                                                    .flex()
 6488                                                    .flex_col()
 6489                                                    .flex_1()
 6490                                                    .h_full()
 6491                                                    .child(
 6492                                                        div()
 6493                                                            .flex()
 6494                                                            .flex_row()
 6495                                                            .flex_1()
 6496                                                            .children(self.render_dock(DockPosition::Left, &self.left_dock, window, cx))
 6497                                                            .child(
 6498                                                                div()
 6499                                                                    .flex()
 6500                                                                    .flex_col()
 6501                                                                    .flex_1()
 6502                                                                    .overflow_hidden()
 6503                                                                    .child(
 6504                                                                        h_flex()
 6505                                                                            .flex_1()
 6506                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6507                                                                            .child(self.center.render(
 6508                                                                                self.zoomed.as_ref(),
 6509                                                                                &PaneRenderContext {
 6510                                                                                    follower_states:
 6511                                                                                        &self.follower_states,
 6512                                                                                    active_call: self.active_call(),
 6513                                                                                    active_pane: &self.active_pane,
 6514                                                                                    app_state: &self.app_state,
 6515                                                                                    project: &self.project,
 6516                                                                                    workspace: &self.weak_self,
 6517                                                                                },
 6518                                                                                window,
 6519                                                                                cx,
 6520                                                                            ))
 6521                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6522                                                                    )
 6523                                                            )
 6524                                                    )
 6525                                                    .child(
 6526                                                        div()
 6527                                                            .w_full()
 6528                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6529                                                    ),
 6530                                            )
 6531                                            .children(self.render_dock(
 6532                                                DockPosition::Right,
 6533                                                &self.right_dock,
 6534                                                window,
 6535                                                cx,
 6536                                            )),
 6537
 6538                                        BottomDockLayout::RightAligned => div()
 6539                                            .flex()
 6540                                            .flex_row()
 6541                                            .h_full()
 6542                                            .children(self.render_dock(
 6543                                                DockPosition::Left,
 6544                                                &self.left_dock,
 6545                                                window,
 6546                                                cx,
 6547                                            ))
 6548                                            .child(
 6549                                                div()
 6550                                                    .flex()
 6551                                                    .flex_col()
 6552                                                    .flex_1()
 6553                                                    .h_full()
 6554                                                    .child(
 6555                                                        div()
 6556                                                            .flex()
 6557                                                            .flex_row()
 6558                                                            .flex_1()
 6559                                                            .child(
 6560                                                                div()
 6561                                                                    .flex()
 6562                                                                    .flex_col()
 6563                                                                    .flex_1()
 6564                                                                    .overflow_hidden()
 6565                                                                    .child(
 6566                                                                        h_flex()
 6567                                                                            .flex_1()
 6568                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6569                                                                            .child(self.center.render(
 6570                                                                                self.zoomed.as_ref(),
 6571                                                                                &PaneRenderContext {
 6572                                                                                    follower_states:
 6573                                                                                        &self.follower_states,
 6574                                                                                    active_call: self.active_call(),
 6575                                                                                    active_pane: &self.active_pane,
 6576                                                                                    app_state: &self.app_state,
 6577                                                                                    project: &self.project,
 6578                                                                                    workspace: &self.weak_self,
 6579                                                                                },
 6580                                                                                window,
 6581                                                                                cx,
 6582                                                                            ))
 6583                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6584                                                                    )
 6585                                                            )
 6586                                                            .children(self.render_dock(DockPosition::Right, &self.right_dock, window, cx))
 6587                                                    )
 6588                                                    .child(
 6589                                                        div()
 6590                                                            .w_full()
 6591                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6592                                                    ),
 6593                                            ),
 6594
 6595                                        BottomDockLayout::Contained => div()
 6596                                            .flex()
 6597                                            .flex_row()
 6598                                            .h_full()
 6599                                            .children(self.render_dock(
 6600                                                DockPosition::Left,
 6601                                                &self.left_dock,
 6602                                                window,
 6603                                                cx,
 6604                                            ))
 6605                                            .child(
 6606                                                div()
 6607                                                    .flex()
 6608                                                    .flex_col()
 6609                                                    .flex_1()
 6610                                                    .overflow_hidden()
 6611                                                    .child(
 6612                                                        h_flex()
 6613                                                            .flex_1()
 6614                                                            .when_some(paddings.0, |this, p| {
 6615                                                                this.child(p.border_r_1())
 6616                                                            })
 6617                                                            .child(self.center.render(
 6618                                                                self.zoomed.as_ref(),
 6619                                                                &PaneRenderContext {
 6620                                                                    follower_states:
 6621                                                                        &self.follower_states,
 6622                                                                    active_call: self.active_call(),
 6623                                                                    active_pane: &self.active_pane,
 6624                                                                    app_state: &self.app_state,
 6625                                                                    project: &self.project,
 6626                                                                    workspace: &self.weak_self,
 6627                                                                },
 6628                                                                window,
 6629                                                                cx,
 6630                                                            ))
 6631                                                            .when_some(paddings.1, |this, p| {
 6632                                                                this.child(p.border_l_1())
 6633                                                            }),
 6634                                                    )
 6635                                                    .children(self.render_dock(
 6636                                                        DockPosition::Bottom,
 6637                                                        &self.bottom_dock,
 6638                                                        window,
 6639                                                        cx,
 6640                                                    )),
 6641                                            )
 6642                                            .children(self.render_dock(
 6643                                                DockPosition::Right,
 6644                                                &self.right_dock,
 6645                                                window,
 6646                                                cx,
 6647                                            )),
 6648                                    }
 6649                                })
 6650                                .children(self.zoomed.as_ref().and_then(|view| {
 6651                                    let zoomed_view = view.upgrade()?;
 6652                                    let div = div()
 6653                                        .occlude()
 6654                                        .absolute()
 6655                                        .overflow_hidden()
 6656                                        .border_color(colors.border)
 6657                                        .bg(colors.background)
 6658                                        .child(zoomed_view)
 6659                                        .inset_0()
 6660                                        .shadow_lg();
 6661
 6662                                    Some(match self.zoomed_position {
 6663                                        Some(DockPosition::Left) => div.right_2().border_r_1(),
 6664                                        Some(DockPosition::Right) => div.left_2().border_l_1(),
 6665                                        Some(DockPosition::Bottom) => div.top_2().border_t_1(),
 6666                                        None => {
 6667                                            div.top_2().bottom_2().left_2().right_2().border_1()
 6668                                        }
 6669                                    })
 6670                                }))
 6671                                .children(self.render_notifications(window, cx)),
 6672                        )
 6673                        .child(self.status_bar.clone())
 6674                        .child(self.modal_layer.clone())
 6675                        .child(self.toast_layer.clone()),
 6676                ),
 6677            window,
 6678            cx,
 6679        )
 6680    }
 6681}
 6682
 6683impl WorkspaceStore {
 6684    pub fn new(client: Arc<Client>, cx: &mut Context<Self>) -> Self {
 6685        Self {
 6686            workspaces: Default::default(),
 6687            _subscriptions: vec![
 6688                client.add_request_handler(cx.weak_entity(), Self::handle_follow),
 6689                client.add_message_handler(cx.weak_entity(), Self::handle_update_followers),
 6690            ],
 6691            client,
 6692        }
 6693    }
 6694
 6695    pub fn update_followers(
 6696        &self,
 6697        project_id: Option<u64>,
 6698        update: proto::update_followers::Variant,
 6699        cx: &App,
 6700    ) -> Option<()> {
 6701        let active_call = ActiveCall::try_global(cx)?;
 6702        let room_id = active_call.read(cx).room()?.read(cx).id();
 6703        self.client
 6704            .send(proto::UpdateFollowers {
 6705                room_id,
 6706                project_id,
 6707                variant: Some(update),
 6708            })
 6709            .log_err()
 6710    }
 6711
 6712    pub async fn handle_follow(
 6713        this: Entity<Self>,
 6714        envelope: TypedEnvelope<proto::Follow>,
 6715        mut cx: AsyncApp,
 6716    ) -> Result<proto::FollowResponse> {
 6717        this.update(&mut cx, |this, cx| {
 6718            let follower = Follower {
 6719                project_id: envelope.payload.project_id,
 6720                peer_id: envelope.original_sender_id()?,
 6721            };
 6722
 6723            let mut response = proto::FollowResponse::default();
 6724            this.workspaces.retain(|workspace| {
 6725                workspace
 6726                    .update(cx, |workspace, window, cx| {
 6727                        let handler_response =
 6728                            workspace.handle_follow(follower.project_id, window, cx);
 6729                        if let Some(active_view) = handler_response.active_view.clone() {
 6730                            if workspace.project.read(cx).remote_id() == follower.project_id {
 6731                                response.active_view = Some(active_view)
 6732                            }
 6733                        }
 6734                    })
 6735                    .is_ok()
 6736            });
 6737
 6738            Ok(response)
 6739        })?
 6740    }
 6741
 6742    async fn handle_update_followers(
 6743        this: Entity<Self>,
 6744        envelope: TypedEnvelope<proto::UpdateFollowers>,
 6745        mut cx: AsyncApp,
 6746    ) -> Result<()> {
 6747        let leader_id = envelope.original_sender_id()?;
 6748        let update = envelope.payload;
 6749
 6750        this.update(&mut cx, |this, cx| {
 6751            this.workspaces.retain(|workspace| {
 6752                workspace
 6753                    .update(cx, |workspace, window, cx| {
 6754                        let project_id = workspace.project.read(cx).remote_id();
 6755                        if update.project_id != project_id && update.project_id.is_some() {
 6756                            return;
 6757                        }
 6758                        workspace.handle_update_followers(leader_id, update.clone(), window, cx);
 6759                    })
 6760                    .is_ok()
 6761            });
 6762            Ok(())
 6763        })?
 6764    }
 6765
 6766    pub fn workspaces(&self) -> &HashSet<WindowHandle<Workspace>> {
 6767        &self.workspaces
 6768    }
 6769}
 6770
 6771impl ViewId {
 6772    pub(crate) fn from_proto(message: proto::ViewId) -> Result<Self> {
 6773        Ok(Self {
 6774            creator: message
 6775                .creator
 6776                .map(CollaboratorId::PeerId)
 6777                .context("creator is missing")?,
 6778            id: message.id,
 6779        })
 6780    }
 6781
 6782    pub(crate) fn to_proto(self) -> Option<proto::ViewId> {
 6783        if let CollaboratorId::PeerId(peer_id) = self.creator {
 6784            Some(proto::ViewId {
 6785                creator: Some(peer_id),
 6786                id: self.id,
 6787            })
 6788        } else {
 6789            None
 6790        }
 6791    }
 6792}
 6793
 6794impl FollowerState {
 6795    fn pane(&self) -> &Entity<Pane> {
 6796        self.dock_pane.as_ref().unwrap_or(&self.center_pane)
 6797    }
 6798}
 6799
 6800pub trait WorkspaceHandle {
 6801    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath>;
 6802}
 6803
 6804impl WorkspaceHandle for Entity<Workspace> {
 6805    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath> {
 6806        self.read(cx)
 6807            .worktrees(cx)
 6808            .flat_map(|worktree| {
 6809                let worktree_id = worktree.read(cx).id();
 6810                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
 6811                    worktree_id,
 6812                    path: f.path.clone(),
 6813                })
 6814            })
 6815            .collect::<Vec<_>>()
 6816    }
 6817}
 6818
 6819impl std::fmt::Debug for OpenPaths {
 6820    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
 6821        f.debug_struct("OpenPaths")
 6822            .field("paths", &self.paths)
 6823            .finish()
 6824    }
 6825}
 6826
 6827pub async fn last_opened_workspace_location() -> Option<SerializedWorkspaceLocation> {
 6828    DB.last_workspace().await.log_err().flatten()
 6829}
 6830
 6831pub fn last_session_workspace_locations(
 6832    last_session_id: &str,
 6833    last_session_window_stack: Option<Vec<WindowId>>,
 6834) -> Option<Vec<SerializedWorkspaceLocation>> {
 6835    DB.last_session_workspace_locations(last_session_id, last_session_window_stack)
 6836        .log_err()
 6837}
 6838
 6839actions!(
 6840    collab,
 6841    [
 6842        /// Opens the channel notes for the current call.
 6843        ///
 6844        /// If you want to open a specific channel, use `zed::OpenZedUrl` with a channel notes URL -
 6845        /// can be copied via "Copy link to section" in the context menu of the channel notes
 6846        /// buffer. These URLs look like `https://zed.dev/channel/channel-name-CHANNEL_ID/notes`.
 6847        OpenChannelNotes,
 6848        /// Mutes your microphone.
 6849        Mute,
 6850        /// Deafens yourself (mute both microphone and speakers).
 6851        Deafen,
 6852        /// Leaves the current call.
 6853        LeaveCall,
 6854        /// Shares the current project with collaborators.
 6855        ShareProject,
 6856        /// Shares your screen with collaborators.
 6857        ScreenShare
 6858    ]
 6859);
 6860actions!(
 6861    zed,
 6862    [
 6863        /// Opens the Zed log file.
 6864        OpenLog
 6865    ]
 6866);
 6867
 6868async fn join_channel_internal(
 6869    channel_id: ChannelId,
 6870    app_state: &Arc<AppState>,
 6871    requesting_window: Option<WindowHandle<Workspace>>,
 6872    active_call: &Entity<ActiveCall>,
 6873    cx: &mut AsyncApp,
 6874) -> Result<bool> {
 6875    let (should_prompt, open_room) = active_call.update(cx, |active_call, cx| {
 6876        let Some(room) = active_call.room().map(|room| room.read(cx)) else {
 6877            return (false, None);
 6878        };
 6879
 6880        let already_in_channel = room.channel_id() == Some(channel_id);
 6881        let should_prompt = room.is_sharing_project()
 6882            && !room.remote_participants().is_empty()
 6883            && !already_in_channel;
 6884        let open_room = if already_in_channel {
 6885            active_call.room().cloned()
 6886        } else {
 6887            None
 6888        };
 6889        (should_prompt, open_room)
 6890    })?;
 6891
 6892    if let Some(room) = open_room {
 6893        let task = room.update(cx, |room, cx| {
 6894            if let Some((project, host)) = room.most_active_project(cx) {
 6895                return Some(join_in_room_project(project, host, app_state.clone(), cx));
 6896            }
 6897
 6898            None
 6899        })?;
 6900        if let Some(task) = task {
 6901            task.await?;
 6902        }
 6903        return anyhow::Ok(true);
 6904    }
 6905
 6906    if should_prompt {
 6907        if let Some(workspace) = requesting_window {
 6908            let answer = workspace
 6909                .update(cx, |_, window, cx| {
 6910                    window.prompt(
 6911                        PromptLevel::Warning,
 6912                        "Do you want to switch channels?",
 6913                        Some("Leaving this call will unshare your current project."),
 6914                        &["Yes, Join Channel", "Cancel"],
 6915                        cx,
 6916                    )
 6917                })?
 6918                .await;
 6919
 6920            if answer == Ok(1) {
 6921                return Ok(false);
 6922            }
 6923        } else {
 6924            return Ok(false); // unreachable!() hopefully
 6925        }
 6926    }
 6927
 6928    let client = cx.update(|cx| active_call.read(cx).client())?;
 6929
 6930    let mut client_status = client.status();
 6931
 6932    // this loop will terminate within client::CONNECTION_TIMEOUT seconds.
 6933    'outer: loop {
 6934        let Some(status) = client_status.recv().await else {
 6935            anyhow::bail!("error connecting");
 6936        };
 6937
 6938        match status {
 6939            Status::Connecting
 6940            | Status::Authenticating
 6941            | Status::Authenticated
 6942            | Status::Reconnecting
 6943            | Status::Reauthenticating => continue,
 6944            Status::Connected { .. } => break 'outer,
 6945            Status::SignedOut | Status::AuthenticationError => {
 6946                return Err(ErrorCode::SignedOut.into());
 6947            }
 6948            Status::UpgradeRequired => return Err(ErrorCode::UpgradeRequired.into()),
 6949            Status::ConnectionError | Status::ConnectionLost | Status::ReconnectionError { .. } => {
 6950                return Err(ErrorCode::Disconnected.into());
 6951            }
 6952        }
 6953    }
 6954
 6955    let room = active_call
 6956        .update(cx, |active_call, cx| {
 6957            active_call.join_channel(channel_id, cx)
 6958        })?
 6959        .await?;
 6960
 6961    let Some(room) = room else {
 6962        return anyhow::Ok(true);
 6963    };
 6964
 6965    room.update(cx, |room, _| room.room_update_completed())?
 6966        .await;
 6967
 6968    let task = room.update(cx, |room, cx| {
 6969        if let Some((project, host)) = room.most_active_project(cx) {
 6970            return Some(join_in_room_project(project, host, app_state.clone(), cx));
 6971        }
 6972
 6973        // If you are the first to join a channel, see if you should share your project.
 6974        if room.remote_participants().is_empty() && !room.local_participant_is_guest() {
 6975            if let Some(workspace) = requesting_window {
 6976                let project = workspace.update(cx, |workspace, _, cx| {
 6977                    let project = workspace.project.read(cx);
 6978
 6979                    if !CallSettings::get_global(cx).share_on_join {
 6980                        return None;
 6981                    }
 6982
 6983                    if (project.is_local() || project.is_via_ssh())
 6984                        && project.visible_worktrees(cx).any(|tree| {
 6985                            tree.read(cx)
 6986                                .root_entry()
 6987                                .map_or(false, |entry| entry.is_dir())
 6988                        })
 6989                    {
 6990                        Some(workspace.project.clone())
 6991                    } else {
 6992                        None
 6993                    }
 6994                });
 6995                if let Ok(Some(project)) = project {
 6996                    return Some(cx.spawn(async move |room, cx| {
 6997                        room.update(cx, |room, cx| room.share_project(project, cx))?
 6998                            .await?;
 6999                        Ok(())
 7000                    }));
 7001                }
 7002            }
 7003        }
 7004
 7005        None
 7006    })?;
 7007    if let Some(task) = task {
 7008        task.await?;
 7009        return anyhow::Ok(true);
 7010    }
 7011    anyhow::Ok(false)
 7012}
 7013
 7014pub fn join_channel(
 7015    channel_id: ChannelId,
 7016    app_state: Arc<AppState>,
 7017    requesting_window: Option<WindowHandle<Workspace>>,
 7018    cx: &mut App,
 7019) -> Task<Result<()>> {
 7020    let active_call = ActiveCall::global(cx);
 7021    cx.spawn(async move |cx| {
 7022        let result = join_channel_internal(
 7023            channel_id,
 7024            &app_state,
 7025            requesting_window,
 7026            &active_call,
 7027             cx,
 7028        )
 7029            .await;
 7030
 7031        // join channel succeeded, and opened a window
 7032        if matches!(result, Ok(true)) {
 7033            return anyhow::Ok(());
 7034        }
 7035
 7036        // find an existing workspace to focus and show call controls
 7037        let mut active_window =
 7038            requesting_window.or_else(|| activate_any_workspace_window( cx));
 7039        if active_window.is_none() {
 7040            // no open workspaces, make one to show the error in (blergh)
 7041            let (window_handle, _) = cx
 7042                .update(|cx| {
 7043                    Workspace::new_local(vec![], app_state.clone(), requesting_window, None, cx)
 7044                })?
 7045                .await?;
 7046
 7047            if result.is_ok() {
 7048                cx.update(|cx| {
 7049                    cx.dispatch_action(&OpenChannelNotes);
 7050                }).log_err();
 7051            }
 7052
 7053            active_window = Some(window_handle);
 7054        }
 7055
 7056        if let Err(err) = result {
 7057            log::error!("failed to join channel: {}", err);
 7058            if let Some(active_window) = active_window {
 7059                active_window
 7060                    .update(cx, |_, window, cx| {
 7061                        let detail: SharedString = match err.error_code() {
 7062                            ErrorCode::SignedOut => {
 7063                                "Please sign in to continue.".into()
 7064                            }
 7065                            ErrorCode::UpgradeRequired => {
 7066                                "Your are running an unsupported version of Zed. Please update to continue.".into()
 7067                            }
 7068                            ErrorCode::NoSuchChannel => {
 7069                                "No matching channel was found. Please check the link and try again.".into()
 7070                            }
 7071                            ErrorCode::Forbidden => {
 7072                                "This channel is private, and you do not have access. Please ask someone to add you and try again.".into()
 7073                            }
 7074                            ErrorCode::Disconnected => "Please check your internet connection and try again.".into(),
 7075                            _ => format!("{}\n\nPlease try again.", err).into(),
 7076                        };
 7077                        window.prompt(
 7078                            PromptLevel::Critical,
 7079                            "Failed to join channel",
 7080                            Some(&detail),
 7081                            &["Ok"],
 7082                        cx)
 7083                    })?
 7084                    .await
 7085                    .ok();
 7086            }
 7087        }
 7088
 7089        // return ok, we showed the error to the user.
 7090        anyhow::Ok(())
 7091    })
 7092}
 7093
 7094pub async fn get_any_active_workspace(
 7095    app_state: Arc<AppState>,
 7096    mut cx: AsyncApp,
 7097) -> anyhow::Result<WindowHandle<Workspace>> {
 7098    // find an existing workspace to focus and show call controls
 7099    let active_window = activate_any_workspace_window(&mut cx);
 7100    if active_window.is_none() {
 7101        cx.update(|cx| Workspace::new_local(vec![], app_state.clone(), None, None, cx))?
 7102            .await?;
 7103    }
 7104    activate_any_workspace_window(&mut cx).context("could not open zed")
 7105}
 7106
 7107fn activate_any_workspace_window(cx: &mut AsyncApp) -> Option<WindowHandle<Workspace>> {
 7108    cx.update(|cx| {
 7109        if let Some(workspace_window) = cx
 7110            .active_window()
 7111            .and_then(|window| window.downcast::<Workspace>())
 7112        {
 7113            return Some(workspace_window);
 7114        }
 7115
 7116        for window in cx.windows() {
 7117            if let Some(workspace_window) = window.downcast::<Workspace>() {
 7118                workspace_window
 7119                    .update(cx, |_, window, _| window.activate_window())
 7120                    .ok();
 7121                return Some(workspace_window);
 7122            }
 7123        }
 7124        None
 7125    })
 7126    .ok()
 7127    .flatten()
 7128}
 7129
 7130pub fn local_workspace_windows(cx: &App) -> Vec<WindowHandle<Workspace>> {
 7131    cx.windows()
 7132        .into_iter()
 7133        .filter_map(|window| window.downcast::<Workspace>())
 7134        .filter(|workspace| {
 7135            workspace
 7136                .read(cx)
 7137                .is_ok_and(|workspace| workspace.project.read(cx).is_local())
 7138        })
 7139        .collect()
 7140}
 7141
 7142#[derive(Default)]
 7143pub struct OpenOptions {
 7144    pub visible: Option<OpenVisible>,
 7145    pub focus: Option<bool>,
 7146    pub open_new_workspace: Option<bool>,
 7147    pub replace_window: Option<WindowHandle<Workspace>>,
 7148    pub env: Option<HashMap<String, String>>,
 7149}
 7150
 7151#[allow(clippy::type_complexity)]
 7152pub fn open_paths(
 7153    abs_paths: &[PathBuf],
 7154    app_state: Arc<AppState>,
 7155    open_options: OpenOptions,
 7156    cx: &mut App,
 7157) -> Task<
 7158    anyhow::Result<(
 7159        WindowHandle<Workspace>,
 7160        Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 7161    )>,
 7162> {
 7163    let abs_paths = abs_paths.to_vec();
 7164    let mut existing = None;
 7165    let mut best_match = None;
 7166    let mut open_visible = OpenVisible::All;
 7167
 7168    cx.spawn(async move |cx| {
 7169        if open_options.open_new_workspace != Some(true) {
 7170            let all_paths = abs_paths.iter().map(|path| app_state.fs.metadata(path));
 7171            let all_metadatas = futures::future::join_all(all_paths)
 7172                .await
 7173                .into_iter()
 7174                .filter_map(|result| result.ok().flatten())
 7175                .collect::<Vec<_>>();
 7176
 7177            cx.update(|cx| {
 7178                for window in local_workspace_windows(&cx) {
 7179                    if let Ok(workspace) = window.read(&cx) {
 7180                        let m = workspace.project.read(&cx).visibility_for_paths(
 7181                            &abs_paths,
 7182                            &all_metadatas,
 7183                            open_options.open_new_workspace == None,
 7184                            cx,
 7185                        );
 7186                        if m > best_match {
 7187                            existing = Some(window);
 7188                            best_match = m;
 7189                        } else if best_match.is_none()
 7190                            && open_options.open_new_workspace == Some(false)
 7191                        {
 7192                            existing = Some(window)
 7193                        }
 7194                    }
 7195                }
 7196            })?;
 7197
 7198            if open_options.open_new_workspace.is_none() && existing.is_none() {
 7199                if all_metadatas.iter().all(|file| !file.is_dir) {
 7200                    cx.update(|cx| {
 7201                        if let Some(window) = cx
 7202                            .active_window()
 7203                            .and_then(|window| window.downcast::<Workspace>())
 7204                        {
 7205                            if let Ok(workspace) = window.read(cx) {
 7206                                let project = workspace.project().read(cx);
 7207                                if project.is_local() && !project.is_via_collab() {
 7208                                    existing = Some(window);
 7209                                    open_visible = OpenVisible::None;
 7210                                    return;
 7211                                }
 7212                            }
 7213                        }
 7214                        for window in local_workspace_windows(cx) {
 7215                            if let Ok(workspace) = window.read(cx) {
 7216                                let project = workspace.project().read(cx);
 7217                                if project.is_via_collab() {
 7218                                    continue;
 7219                                }
 7220                                existing = Some(window);
 7221                                open_visible = OpenVisible::None;
 7222                                break;
 7223                            }
 7224                        }
 7225                    })?;
 7226                }
 7227            }
 7228        }
 7229
 7230        if let Some(existing) = existing {
 7231            let open_task = existing
 7232                .update(cx, |workspace, window, cx| {
 7233                    window.activate_window();
 7234                    workspace.open_paths(
 7235                        abs_paths,
 7236                        OpenOptions {
 7237                            visible: Some(open_visible),
 7238                            ..Default::default()
 7239                        },
 7240                        None,
 7241                        window,
 7242                        cx,
 7243                    )
 7244                })?
 7245                .await;
 7246
 7247            _ = existing.update(cx, |workspace, _, cx| {
 7248                for item in open_task.iter().flatten() {
 7249                    if let Err(e) = item {
 7250                        workspace.show_error(&e, cx);
 7251                    }
 7252                }
 7253            });
 7254
 7255            Ok((existing, open_task))
 7256        } else {
 7257            cx.update(move |cx| {
 7258                Workspace::new_local(
 7259                    abs_paths,
 7260                    app_state.clone(),
 7261                    open_options.replace_window,
 7262                    open_options.env,
 7263                    cx,
 7264                )
 7265            })?
 7266            .await
 7267        }
 7268    })
 7269}
 7270
 7271pub fn open_new(
 7272    open_options: OpenOptions,
 7273    app_state: Arc<AppState>,
 7274    cx: &mut App,
 7275    init: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + 'static + Send,
 7276) -> Task<anyhow::Result<()>> {
 7277    let task = Workspace::new_local(Vec::new(), app_state, None, open_options.env, cx);
 7278    cx.spawn(async move |cx| {
 7279        let (workspace, opened_paths) = task.await?;
 7280        workspace.update(cx, |workspace, window, cx| {
 7281            if opened_paths.is_empty() {
 7282                init(workspace, window, cx)
 7283            }
 7284        })?;
 7285        Ok(())
 7286    })
 7287}
 7288
 7289pub fn create_and_open_local_file(
 7290    path: &'static Path,
 7291    window: &mut Window,
 7292    cx: &mut Context<Workspace>,
 7293    default_content: impl 'static + Send + FnOnce() -> Rope,
 7294) -> Task<Result<Box<dyn ItemHandle>>> {
 7295    cx.spawn_in(window, async move |workspace, cx| {
 7296        let fs = workspace.read_with(cx, |workspace, _| workspace.app_state().fs.clone())?;
 7297        if !fs.is_file(path).await {
 7298            fs.create_file(path, Default::default()).await?;
 7299            fs.save(path, &default_content(), Default::default())
 7300                .await?;
 7301        }
 7302
 7303        let mut items = workspace
 7304            .update_in(cx, |workspace, window, cx| {
 7305                workspace.with_local_workspace(window, cx, |workspace, window, cx| {
 7306                    workspace.open_paths(
 7307                        vec![path.to_path_buf()],
 7308                        OpenOptions {
 7309                            visible: Some(OpenVisible::None),
 7310                            ..Default::default()
 7311                        },
 7312                        None,
 7313                        window,
 7314                        cx,
 7315                    )
 7316                })
 7317            })?
 7318            .await?
 7319            .await;
 7320
 7321        let item = items.pop().flatten();
 7322        item.with_context(|| format!("path {path:?} is not a file"))?
 7323    })
 7324}
 7325
 7326pub fn open_ssh_project_with_new_connection(
 7327    window: WindowHandle<Workspace>,
 7328    connection_options: SshConnectionOptions,
 7329    cancel_rx: oneshot::Receiver<()>,
 7330    delegate: Arc<dyn SshClientDelegate>,
 7331    app_state: Arc<AppState>,
 7332    paths: Vec<PathBuf>,
 7333    cx: &mut App,
 7334) -> Task<Result<()>> {
 7335    cx.spawn(async move |cx| {
 7336        let (serialized_ssh_project, workspace_id, serialized_workspace) =
 7337            serialize_ssh_project(connection_options.clone(), paths.clone(), &cx).await?;
 7338
 7339        let session = match cx
 7340            .update(|cx| {
 7341                remote::SshRemoteClient::new(
 7342                    ConnectionIdentifier::Workspace(workspace_id.0),
 7343                    connection_options,
 7344                    cancel_rx,
 7345                    delegate,
 7346                    cx,
 7347                )
 7348            })?
 7349            .await?
 7350        {
 7351            Some(result) => result,
 7352            None => return Ok(()),
 7353        };
 7354
 7355        let project = cx.update(|cx| {
 7356            project::Project::ssh(
 7357                session,
 7358                app_state.client.clone(),
 7359                app_state.node_runtime.clone(),
 7360                app_state.user_store.clone(),
 7361                app_state.languages.clone(),
 7362                app_state.fs.clone(),
 7363                cx,
 7364            )
 7365        })?;
 7366
 7367        open_ssh_project_inner(
 7368            project,
 7369            paths,
 7370            serialized_ssh_project,
 7371            workspace_id,
 7372            serialized_workspace,
 7373            app_state,
 7374            window,
 7375            cx,
 7376        )
 7377        .await
 7378    })
 7379}
 7380
 7381pub fn open_ssh_project_with_existing_connection(
 7382    connection_options: SshConnectionOptions,
 7383    project: Entity<Project>,
 7384    paths: Vec<PathBuf>,
 7385    app_state: Arc<AppState>,
 7386    window: WindowHandle<Workspace>,
 7387    cx: &mut AsyncApp,
 7388) -> Task<Result<()>> {
 7389    cx.spawn(async move |cx| {
 7390        let (serialized_ssh_project, workspace_id, serialized_workspace) =
 7391            serialize_ssh_project(connection_options.clone(), paths.clone(), &cx).await?;
 7392
 7393        open_ssh_project_inner(
 7394            project,
 7395            paths,
 7396            serialized_ssh_project,
 7397            workspace_id,
 7398            serialized_workspace,
 7399            app_state,
 7400            window,
 7401            cx,
 7402        )
 7403        .await
 7404    })
 7405}
 7406
 7407async fn open_ssh_project_inner(
 7408    project: Entity<Project>,
 7409    paths: Vec<PathBuf>,
 7410    serialized_ssh_project: SerializedSshProject,
 7411    workspace_id: WorkspaceId,
 7412    serialized_workspace: Option<SerializedWorkspace>,
 7413    app_state: Arc<AppState>,
 7414    window: WindowHandle<Workspace>,
 7415    cx: &mut AsyncApp,
 7416) -> Result<()> {
 7417    let toolchains = DB.toolchains(workspace_id).await?;
 7418    for (toolchain, worktree_id, path) in toolchains {
 7419        project
 7420            .update(cx, |this, cx| {
 7421                this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 7422            })?
 7423            .await;
 7424    }
 7425    let mut project_paths_to_open = vec![];
 7426    let mut project_path_errors = vec![];
 7427
 7428    for path in paths {
 7429        let result = cx
 7430            .update(|cx| Workspace::project_path_for_path(project.clone(), &path, true, cx))?
 7431            .await;
 7432        match result {
 7433            Ok((_, project_path)) => {
 7434                project_paths_to_open.push((path.clone(), Some(project_path)));
 7435            }
 7436            Err(error) => {
 7437                project_path_errors.push(error);
 7438            }
 7439        };
 7440    }
 7441
 7442    if project_paths_to_open.is_empty() {
 7443        return Err(project_path_errors.pop().context("no paths given")?);
 7444    }
 7445
 7446    if let Some(detach_session_task) = window
 7447        .update(cx, |_workspace, window, cx| {
 7448            cx.spawn_in(window, async move |this, cx| {
 7449                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))
 7450            })
 7451        })
 7452        .ok()
 7453    {
 7454        detach_session_task.await.ok();
 7455    }
 7456
 7457    cx.update_window(window.into(), |_, window, cx| {
 7458        window.replace_root(cx, |window, cx| {
 7459            telemetry::event!("SSH Project Opened");
 7460
 7461            let mut workspace =
 7462                Workspace::new(Some(workspace_id), project, app_state.clone(), window, cx);
 7463            workspace.set_serialized_ssh_project(serialized_ssh_project);
 7464            workspace.update_history(cx);
 7465
 7466            if let Some(ref serialized) = serialized_workspace {
 7467                workspace.centered_layout = serialized.centered_layout;
 7468            }
 7469
 7470            workspace
 7471        });
 7472    })?;
 7473
 7474    window
 7475        .update(cx, |_, window, cx| {
 7476            window.activate_window();
 7477            open_items(serialized_workspace, project_paths_to_open, window, cx)
 7478        })?
 7479        .await?;
 7480
 7481    window.update(cx, |workspace, _, cx| {
 7482        for error in project_path_errors {
 7483            if error.error_code() == proto::ErrorCode::DevServerProjectPathDoesNotExist {
 7484                if let Some(path) = error.error_tag("path") {
 7485                    workspace.show_error(&anyhow!("'{path}' does not exist"), cx)
 7486                }
 7487            } else {
 7488                workspace.show_error(&error, cx)
 7489            }
 7490        }
 7491    })?;
 7492
 7493    Ok(())
 7494}
 7495
 7496fn serialize_ssh_project(
 7497    connection_options: SshConnectionOptions,
 7498    paths: Vec<PathBuf>,
 7499    cx: &AsyncApp,
 7500) -> Task<
 7501    Result<(
 7502        SerializedSshProject,
 7503        WorkspaceId,
 7504        Option<SerializedWorkspace>,
 7505    )>,
 7506> {
 7507    cx.background_spawn(async move {
 7508        let serialized_ssh_project = persistence::DB
 7509            .get_or_create_ssh_project(
 7510                connection_options.host.clone(),
 7511                connection_options.port,
 7512                paths
 7513                    .iter()
 7514                    .map(|path| path.to_string_lossy().to_string())
 7515                    .collect::<Vec<_>>(),
 7516                connection_options.username.clone(),
 7517            )
 7518            .await?;
 7519
 7520        let serialized_workspace =
 7521            persistence::DB.workspace_for_ssh_project(&serialized_ssh_project);
 7522
 7523        let workspace_id = if let Some(workspace_id) =
 7524            serialized_workspace.as_ref().map(|workspace| workspace.id)
 7525        {
 7526            workspace_id
 7527        } else {
 7528            persistence::DB.next_id().await?
 7529        };
 7530
 7531        Ok((serialized_ssh_project, workspace_id, serialized_workspace))
 7532    })
 7533}
 7534
 7535pub fn join_in_room_project(
 7536    project_id: u64,
 7537    follow_user_id: u64,
 7538    app_state: Arc<AppState>,
 7539    cx: &mut App,
 7540) -> Task<Result<()>> {
 7541    let windows = cx.windows();
 7542    cx.spawn(async move |cx| {
 7543        let existing_workspace = windows.into_iter().find_map(|window_handle| {
 7544            window_handle
 7545                .downcast::<Workspace>()
 7546                .and_then(|window_handle| {
 7547                    window_handle
 7548                        .update(cx, |workspace, _window, cx| {
 7549                            if workspace.project().read(cx).remote_id() == Some(project_id) {
 7550                                Some(window_handle)
 7551                            } else {
 7552                                None
 7553                            }
 7554                        })
 7555                        .unwrap_or(None)
 7556                })
 7557        });
 7558
 7559        let workspace = if let Some(existing_workspace) = existing_workspace {
 7560            existing_workspace
 7561        } else {
 7562            let active_call = cx.update(|cx| ActiveCall::global(cx))?;
 7563            let room = active_call
 7564                .read_with(cx, |call, _| call.room().cloned())?
 7565                .context("not in a call")?;
 7566            let project = room
 7567                .update(cx, |room, cx| {
 7568                    room.join_project(
 7569                        project_id,
 7570                        app_state.languages.clone(),
 7571                        app_state.fs.clone(),
 7572                        cx,
 7573                    )
 7574                })?
 7575                .await?;
 7576
 7577            let window_bounds_override = window_bounds_env_override();
 7578            cx.update(|cx| {
 7579                let mut options = (app_state.build_window_options)(None, cx);
 7580                options.window_bounds = window_bounds_override.map(WindowBounds::Windowed);
 7581                cx.open_window(options, |window, cx| {
 7582                    cx.new(|cx| {
 7583                        Workspace::new(Default::default(), project, app_state.clone(), window, cx)
 7584                    })
 7585                })
 7586            })??
 7587        };
 7588
 7589        workspace.update(cx, |workspace, window, cx| {
 7590            cx.activate(true);
 7591            window.activate_window();
 7592
 7593            if let Some(room) = ActiveCall::global(cx).read(cx).room().cloned() {
 7594                let follow_peer_id = room
 7595                    .read(cx)
 7596                    .remote_participants()
 7597                    .iter()
 7598                    .find(|(_, participant)| participant.user.id == follow_user_id)
 7599                    .map(|(_, p)| p.peer_id)
 7600                    .or_else(|| {
 7601                        // If we couldn't follow the given user, follow the host instead.
 7602                        let collaborator = workspace
 7603                            .project()
 7604                            .read(cx)
 7605                            .collaborators()
 7606                            .values()
 7607                            .find(|collaborator| collaborator.is_host)?;
 7608                        Some(collaborator.peer_id)
 7609                    });
 7610
 7611                if let Some(follow_peer_id) = follow_peer_id {
 7612                    workspace.follow(follow_peer_id, window, cx);
 7613                }
 7614            }
 7615        })?;
 7616
 7617        anyhow::Ok(())
 7618    })
 7619}
 7620
 7621pub fn reload(reload: &Reload, cx: &mut App) {
 7622    let should_confirm = WorkspaceSettings::get_global(cx).confirm_quit;
 7623    let mut workspace_windows = cx
 7624        .windows()
 7625        .into_iter()
 7626        .filter_map(|window| window.downcast::<Workspace>())
 7627        .collect::<Vec<_>>();
 7628
 7629    // If multiple windows have unsaved changes, and need a save prompt,
 7630    // prompt in the active window before switching to a different window.
 7631    workspace_windows.sort_by_key(|window| window.is_active(cx) == Some(false));
 7632
 7633    let mut prompt = None;
 7634    if let (true, Some(window)) = (should_confirm, workspace_windows.first()) {
 7635        prompt = window
 7636            .update(cx, |_, window, cx| {
 7637                window.prompt(
 7638                    PromptLevel::Info,
 7639                    "Are you sure you want to restart?",
 7640                    None,
 7641                    &["Restart", "Cancel"],
 7642                    cx,
 7643                )
 7644            })
 7645            .ok();
 7646    }
 7647
 7648    let binary_path = reload.binary_path.clone();
 7649    cx.spawn(async move |cx| {
 7650        if let Some(prompt) = prompt {
 7651            let answer = prompt.await?;
 7652            if answer != 0 {
 7653                return Ok(());
 7654            }
 7655        }
 7656
 7657        // If the user cancels any save prompt, then keep the app open.
 7658        for window in workspace_windows {
 7659            if let Ok(should_close) = window.update(cx, |workspace, window, cx| {
 7660                workspace.prepare_to_close(CloseIntent::Quit, window, cx)
 7661            }) {
 7662                if !should_close.await? {
 7663                    return Ok(());
 7664                }
 7665            }
 7666        }
 7667
 7668        cx.update(|cx| cx.restart(binary_path))
 7669    })
 7670    .detach_and_log_err(cx);
 7671}
 7672
 7673fn parse_pixel_position_env_var(value: &str) -> Option<Point<Pixels>> {
 7674    let mut parts = value.split(',');
 7675    let x: usize = parts.next()?.parse().ok()?;
 7676    let y: usize = parts.next()?.parse().ok()?;
 7677    Some(point(px(x as f32), px(y as f32)))
 7678}
 7679
 7680fn parse_pixel_size_env_var(value: &str) -> Option<Size<Pixels>> {
 7681    let mut parts = value.split(',');
 7682    let width: usize = parts.next()?.parse().ok()?;
 7683    let height: usize = parts.next()?.parse().ok()?;
 7684    Some(size(px(width as f32), px(height as f32)))
 7685}
 7686
 7687/// Add client-side decorations (rounded corners, shadows, resize handling) when appropriate.
 7688pub fn client_side_decorations(
 7689    element: impl IntoElement,
 7690    window: &mut Window,
 7691    cx: &mut App,
 7692) -> Stateful<Div> {
 7693    const BORDER_SIZE: Pixels = px(1.0);
 7694    let decorations = window.window_decorations();
 7695
 7696    match decorations {
 7697        Decorations::Client { .. } => window.set_client_inset(theme::CLIENT_SIDE_DECORATION_SHADOW),
 7698        Decorations::Server { .. } => window.set_client_inset(px(0.0)),
 7699    }
 7700
 7701    struct GlobalResizeEdge(ResizeEdge);
 7702    impl Global for GlobalResizeEdge {}
 7703
 7704    div()
 7705        .id("window-backdrop")
 7706        .bg(transparent_black())
 7707        .map(|div| match decorations {
 7708            Decorations::Server => div,
 7709            Decorations::Client { tiling, .. } => div
 7710                .when(!(tiling.top || tiling.right), |div| {
 7711                    div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7712                })
 7713                .when(!(tiling.top || tiling.left), |div| {
 7714                    div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7715                })
 7716                .when(!(tiling.bottom || tiling.right), |div| {
 7717                    div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7718                })
 7719                .when(!(tiling.bottom || tiling.left), |div| {
 7720                    div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7721                })
 7722                .when(!tiling.top, |div| {
 7723                    div.pt(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7724                })
 7725                .when(!tiling.bottom, |div| {
 7726                    div.pb(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7727                })
 7728                .when(!tiling.left, |div| {
 7729                    div.pl(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7730                })
 7731                .when(!tiling.right, |div| {
 7732                    div.pr(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7733                })
 7734                .on_mouse_move(move |e, window, cx| {
 7735                    let size = window.window_bounds().get_bounds().size;
 7736                    let pos = e.position;
 7737
 7738                    let new_edge =
 7739                        resize_edge(pos, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling);
 7740
 7741                    let edge = cx.try_global::<GlobalResizeEdge>();
 7742                    if new_edge != edge.map(|edge| edge.0) {
 7743                        window
 7744                            .window_handle()
 7745                            .update(cx, |workspace, _, cx| {
 7746                                cx.notify(workspace.entity_id());
 7747                            })
 7748                            .ok();
 7749                    }
 7750                })
 7751                .on_mouse_down(MouseButton::Left, move |e, window, _| {
 7752                    let size = window.window_bounds().get_bounds().size;
 7753                    let pos = e.position;
 7754
 7755                    let edge = match resize_edge(
 7756                        pos,
 7757                        theme::CLIENT_SIDE_DECORATION_SHADOW,
 7758                        size,
 7759                        tiling,
 7760                    ) {
 7761                        Some(value) => value,
 7762                        None => return,
 7763                    };
 7764
 7765                    window.start_window_resize(edge);
 7766                }),
 7767        })
 7768        .size_full()
 7769        .child(
 7770            div()
 7771                .cursor(CursorStyle::Arrow)
 7772                .map(|div| match decorations {
 7773                    Decorations::Server => div,
 7774                    Decorations::Client { tiling } => div
 7775                        .border_color(cx.theme().colors().border)
 7776                        .when(!(tiling.top || tiling.right), |div| {
 7777                            div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7778                        })
 7779                        .when(!(tiling.top || tiling.left), |div| {
 7780                            div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7781                        })
 7782                        .when(!(tiling.bottom || tiling.right), |div| {
 7783                            div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7784                        })
 7785                        .when(!(tiling.bottom || tiling.left), |div| {
 7786                            div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7787                        })
 7788                        .when(!tiling.top, |div| div.border_t(BORDER_SIZE))
 7789                        .when(!tiling.bottom, |div| div.border_b(BORDER_SIZE))
 7790                        .when(!tiling.left, |div| div.border_l(BORDER_SIZE))
 7791                        .when(!tiling.right, |div| div.border_r(BORDER_SIZE))
 7792                        .when(!tiling.is_tiled(), |div| {
 7793                            div.shadow(vec![gpui::BoxShadow {
 7794                                color: Hsla {
 7795                                    h: 0.,
 7796                                    s: 0.,
 7797                                    l: 0.,
 7798                                    a: 0.4,
 7799                                },
 7800                                blur_radius: theme::CLIENT_SIDE_DECORATION_SHADOW / 2.,
 7801                                spread_radius: px(0.),
 7802                                offset: point(px(0.0), px(0.0)),
 7803                            }])
 7804                        }),
 7805                })
 7806                .on_mouse_move(|_e, _, cx| {
 7807                    cx.stop_propagation();
 7808                })
 7809                .size_full()
 7810                .child(element),
 7811        )
 7812        .map(|div| match decorations {
 7813            Decorations::Server => div,
 7814            Decorations::Client { tiling, .. } => div.child(
 7815                canvas(
 7816                    |_bounds, window, _| {
 7817                        window.insert_hitbox(
 7818                            Bounds::new(
 7819                                point(px(0.0), px(0.0)),
 7820                                window.window_bounds().get_bounds().size,
 7821                            ),
 7822                            HitboxBehavior::Normal,
 7823                        )
 7824                    },
 7825                    move |_bounds, hitbox, window, cx| {
 7826                        let mouse = window.mouse_position();
 7827                        let size = window.window_bounds().get_bounds().size;
 7828                        let Some(edge) =
 7829                            resize_edge(mouse, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling)
 7830                        else {
 7831                            return;
 7832                        };
 7833                        cx.set_global(GlobalResizeEdge(edge));
 7834                        window.set_cursor_style(
 7835                            match edge {
 7836                                ResizeEdge::Top | ResizeEdge::Bottom => CursorStyle::ResizeUpDown,
 7837                                ResizeEdge::Left | ResizeEdge::Right => {
 7838                                    CursorStyle::ResizeLeftRight
 7839                                }
 7840                                ResizeEdge::TopLeft | ResizeEdge::BottomRight => {
 7841                                    CursorStyle::ResizeUpLeftDownRight
 7842                                }
 7843                                ResizeEdge::TopRight | ResizeEdge::BottomLeft => {
 7844                                    CursorStyle::ResizeUpRightDownLeft
 7845                                }
 7846                            },
 7847                            &hitbox,
 7848                        );
 7849                    },
 7850                )
 7851                .size_full()
 7852                .absolute(),
 7853            ),
 7854        })
 7855}
 7856
 7857fn resize_edge(
 7858    pos: Point<Pixels>,
 7859    shadow_size: Pixels,
 7860    window_size: Size<Pixels>,
 7861    tiling: Tiling,
 7862) -> Option<ResizeEdge> {
 7863    let bounds = Bounds::new(Point::default(), window_size).inset(shadow_size * 1.5);
 7864    if bounds.contains(&pos) {
 7865        return None;
 7866    }
 7867
 7868    let corner_size = size(shadow_size * 1.5, shadow_size * 1.5);
 7869    let top_left_bounds = Bounds::new(Point::new(px(0.), px(0.)), corner_size);
 7870    if !tiling.top && top_left_bounds.contains(&pos) {
 7871        return Some(ResizeEdge::TopLeft);
 7872    }
 7873
 7874    let top_right_bounds = Bounds::new(
 7875        Point::new(window_size.width - corner_size.width, px(0.)),
 7876        corner_size,
 7877    );
 7878    if !tiling.top && top_right_bounds.contains(&pos) {
 7879        return Some(ResizeEdge::TopRight);
 7880    }
 7881
 7882    let bottom_left_bounds = Bounds::new(
 7883        Point::new(px(0.), window_size.height - corner_size.height),
 7884        corner_size,
 7885    );
 7886    if !tiling.bottom && bottom_left_bounds.contains(&pos) {
 7887        return Some(ResizeEdge::BottomLeft);
 7888    }
 7889
 7890    let bottom_right_bounds = Bounds::new(
 7891        Point::new(
 7892            window_size.width - corner_size.width,
 7893            window_size.height - corner_size.height,
 7894        ),
 7895        corner_size,
 7896    );
 7897    if !tiling.bottom && bottom_right_bounds.contains(&pos) {
 7898        return Some(ResizeEdge::BottomRight);
 7899    }
 7900
 7901    if !tiling.top && pos.y < shadow_size {
 7902        Some(ResizeEdge::Top)
 7903    } else if !tiling.bottom && pos.y > window_size.height - shadow_size {
 7904        Some(ResizeEdge::Bottom)
 7905    } else if !tiling.left && pos.x < shadow_size {
 7906        Some(ResizeEdge::Left)
 7907    } else if !tiling.right && pos.x > window_size.width - shadow_size {
 7908        Some(ResizeEdge::Right)
 7909    } else {
 7910        None
 7911    }
 7912}
 7913
 7914fn join_pane_into_active(
 7915    active_pane: &Entity<Pane>,
 7916    pane: &Entity<Pane>,
 7917    window: &mut Window,
 7918    cx: &mut App,
 7919) {
 7920    if pane == active_pane {
 7921        return;
 7922    } else if pane.read(cx).items_len() == 0 {
 7923        pane.update(cx, |_, cx| {
 7924            cx.emit(pane::Event::Remove {
 7925                focus_on_pane: None,
 7926            });
 7927        })
 7928    } else {
 7929        move_all_items(pane, active_pane, window, cx);
 7930    }
 7931}
 7932
 7933fn move_all_items(
 7934    from_pane: &Entity<Pane>,
 7935    to_pane: &Entity<Pane>,
 7936    window: &mut Window,
 7937    cx: &mut App,
 7938) {
 7939    let destination_is_different = from_pane != to_pane;
 7940    let mut moved_items = 0;
 7941    for (item_ix, item_handle) in from_pane
 7942        .read(cx)
 7943        .items()
 7944        .enumerate()
 7945        .map(|(ix, item)| (ix, item.clone()))
 7946        .collect::<Vec<_>>()
 7947    {
 7948        let ix = item_ix - moved_items;
 7949        if destination_is_different {
 7950            // Close item from previous pane
 7951            from_pane.update(cx, |source, cx| {
 7952                source.remove_item_and_focus_on_pane(ix, false, to_pane.clone(), window, cx);
 7953            });
 7954            moved_items += 1;
 7955        }
 7956
 7957        // This automatically removes duplicate items in the pane
 7958        to_pane.update(cx, |destination, cx| {
 7959            destination.add_item(item_handle, true, true, None, window, cx);
 7960            window.focus(&destination.focus_handle(cx))
 7961        });
 7962    }
 7963}
 7964
 7965pub fn move_item(
 7966    source: &Entity<Pane>,
 7967    destination: &Entity<Pane>,
 7968    item_id_to_move: EntityId,
 7969    destination_index: usize,
 7970    activate: bool,
 7971    window: &mut Window,
 7972    cx: &mut App,
 7973) {
 7974    let Some((item_ix, item_handle)) = source
 7975        .read(cx)
 7976        .items()
 7977        .enumerate()
 7978        .find(|(_, item_handle)| item_handle.item_id() == item_id_to_move)
 7979        .map(|(ix, item)| (ix, item.clone()))
 7980    else {
 7981        // Tab was closed during drag
 7982        return;
 7983    };
 7984
 7985    if source != destination {
 7986        // Close item from previous pane
 7987        source.update(cx, |source, cx| {
 7988            source.remove_item_and_focus_on_pane(item_ix, false, destination.clone(), window, cx);
 7989        });
 7990    }
 7991
 7992    // This automatically removes duplicate items in the pane
 7993    destination.update(cx, |destination, cx| {
 7994        destination.add_item_inner(
 7995            item_handle,
 7996            activate,
 7997            activate,
 7998            activate,
 7999            Some(destination_index),
 8000            window,
 8001            cx,
 8002        );
 8003        if activate {
 8004            window.focus(&destination.focus_handle(cx))
 8005        }
 8006    });
 8007}
 8008
 8009pub fn move_active_item(
 8010    source: &Entity<Pane>,
 8011    destination: &Entity<Pane>,
 8012    focus_destination: bool,
 8013    close_if_empty: bool,
 8014    window: &mut Window,
 8015    cx: &mut App,
 8016) {
 8017    if source == destination {
 8018        return;
 8019    }
 8020    let Some(active_item) = source.read(cx).active_item() else {
 8021        return;
 8022    };
 8023    source.update(cx, |source_pane, cx| {
 8024        let item_id = active_item.item_id();
 8025        source_pane.remove_item(item_id, false, close_if_empty, window, cx);
 8026        destination.update(cx, |target_pane, cx| {
 8027            target_pane.add_item(
 8028                active_item,
 8029                focus_destination,
 8030                focus_destination,
 8031                Some(target_pane.items_len()),
 8032                window,
 8033                cx,
 8034            );
 8035        });
 8036    });
 8037}
 8038
 8039pub fn clone_active_item(
 8040    workspace_id: Option<WorkspaceId>,
 8041    source: &Entity<Pane>,
 8042    destination: &Entity<Pane>,
 8043    focus_destination: bool,
 8044    window: &mut Window,
 8045    cx: &mut App,
 8046) {
 8047    if source == destination {
 8048        return;
 8049    }
 8050    let Some(active_item) = source.read(cx).active_item() else {
 8051        return;
 8052    };
 8053    destination.update(cx, |target_pane, cx| {
 8054        let Some(clone) = active_item.clone_on_split(workspace_id, window, cx) else {
 8055            return;
 8056        };
 8057        target_pane.add_item(
 8058            clone,
 8059            focus_destination,
 8060            focus_destination,
 8061            Some(target_pane.items_len()),
 8062            window,
 8063            cx,
 8064        );
 8065    });
 8066}
 8067
 8068#[derive(Debug)]
 8069pub struct WorkspacePosition {
 8070    pub window_bounds: Option<WindowBounds>,
 8071    pub display: Option<Uuid>,
 8072    pub centered_layout: bool,
 8073}
 8074
 8075pub fn ssh_workspace_position_from_db(
 8076    host: String,
 8077    port: Option<u16>,
 8078    user: Option<String>,
 8079    paths_to_open: &[PathBuf],
 8080    cx: &App,
 8081) -> Task<Result<WorkspacePosition>> {
 8082    let paths = paths_to_open
 8083        .iter()
 8084        .map(|path| path.to_string_lossy().to_string())
 8085        .collect::<Vec<_>>();
 8086
 8087    cx.background_spawn(async move {
 8088        let serialized_ssh_project = persistence::DB
 8089            .get_or_create_ssh_project(host, port, paths, user)
 8090            .await
 8091            .context("fetching serialized ssh project")?;
 8092        let serialized_workspace =
 8093            persistence::DB.workspace_for_ssh_project(&serialized_ssh_project);
 8094
 8095        let (window_bounds, display) = if let Some(bounds) = window_bounds_env_override() {
 8096            (Some(WindowBounds::Windowed(bounds)), None)
 8097        } else {
 8098            let restorable_bounds = serialized_workspace
 8099                .as_ref()
 8100                .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 8101                .or_else(|| {
 8102                    let (display, window_bounds) = DB.last_window().log_err()?;
 8103                    Some((display?, window_bounds?))
 8104                });
 8105
 8106            if let Some((serialized_display, serialized_status)) = restorable_bounds {
 8107                (Some(serialized_status.0), Some(serialized_display))
 8108            } else {
 8109                (None, None)
 8110            }
 8111        };
 8112
 8113        let centered_layout = serialized_workspace
 8114            .as_ref()
 8115            .map(|w| w.centered_layout)
 8116            .unwrap_or(false);
 8117
 8118        Ok(WorkspacePosition {
 8119            window_bounds,
 8120            display,
 8121            centered_layout,
 8122        })
 8123    })
 8124}
 8125
 8126pub fn with_active_or_new_workspace(
 8127    cx: &mut App,
 8128    f: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send + 'static,
 8129) {
 8130    match cx.active_window().and_then(|w| w.downcast::<Workspace>()) {
 8131        Some(workspace) => {
 8132            cx.defer(move |cx| {
 8133                workspace
 8134                    .update(cx, |workspace, window, cx| f(workspace, window, cx))
 8135                    .log_err();
 8136            });
 8137        }
 8138        None => {
 8139            let app_state = AppState::global(cx);
 8140            if let Some(app_state) = app_state.upgrade() {
 8141                open_new(
 8142                    OpenOptions::default(),
 8143                    app_state,
 8144                    cx,
 8145                    move |workspace, window, cx| f(workspace, window, cx),
 8146                )
 8147                .detach_and_log_err(cx);
 8148            }
 8149        }
 8150    }
 8151}
 8152
 8153#[cfg(test)]
 8154mod tests {
 8155    use std::{cell::RefCell, rc::Rc};
 8156
 8157    use super::*;
 8158    use crate::{
 8159        dock::{PanelEvent, test::TestPanel},
 8160        item::{
 8161            ItemEvent,
 8162            test::{TestItem, TestProjectItem},
 8163        },
 8164    };
 8165    use fs::FakeFs;
 8166    use gpui::{
 8167        DismissEvent, Empty, EventEmitter, FocusHandle, Focusable, Render, TestAppContext,
 8168        UpdateGlobal, VisualTestContext, px,
 8169    };
 8170    use project::{Project, ProjectEntryId};
 8171    use serde_json::json;
 8172    use settings::SettingsStore;
 8173
 8174    #[gpui::test]
 8175    async fn test_tab_disambiguation(cx: &mut TestAppContext) {
 8176        init_test(cx);
 8177
 8178        let fs = FakeFs::new(cx.executor());
 8179        let project = Project::test(fs, [], cx).await;
 8180        let (workspace, cx) =
 8181            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8182
 8183        // Adding an item with no ambiguity renders the tab without detail.
 8184        let item1 = cx.new(|cx| {
 8185            let mut item = TestItem::new(cx);
 8186            item.tab_descriptions = Some(vec!["c", "b1/c", "a/b1/c"]);
 8187            item
 8188        });
 8189        workspace.update_in(cx, |workspace, window, cx| {
 8190            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8191        });
 8192        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(0)));
 8193
 8194        // Adding an item that creates ambiguity increases the level of detail on
 8195        // both tabs.
 8196        let item2 = cx.new_window_entity(|_window, cx| {
 8197            let mut item = TestItem::new(cx);
 8198            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8199            item
 8200        });
 8201        workspace.update_in(cx, |workspace, window, cx| {
 8202            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8203        });
 8204        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8205        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8206
 8207        // Adding an item that creates ambiguity increases the level of detail only
 8208        // on the ambiguous tabs. In this case, the ambiguity can't be resolved so
 8209        // we stop at the highest detail available.
 8210        let item3 = cx.new(|cx| {
 8211            let mut item = TestItem::new(cx);
 8212            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8213            item
 8214        });
 8215        workspace.update_in(cx, |workspace, window, cx| {
 8216            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8217        });
 8218        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8219        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8220        item3.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8221    }
 8222
 8223    #[gpui::test]
 8224    async fn test_tracking_active_path(cx: &mut TestAppContext) {
 8225        init_test(cx);
 8226
 8227        let fs = FakeFs::new(cx.executor());
 8228        fs.insert_tree(
 8229            "/root1",
 8230            json!({
 8231                "one.txt": "",
 8232                "two.txt": "",
 8233            }),
 8234        )
 8235        .await;
 8236        fs.insert_tree(
 8237            "/root2",
 8238            json!({
 8239                "three.txt": "",
 8240            }),
 8241        )
 8242        .await;
 8243
 8244        let project = Project::test(fs, ["root1".as_ref()], cx).await;
 8245        let (workspace, cx) =
 8246            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8247        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8248        let worktree_id = project.update(cx, |project, cx| {
 8249            project.worktrees(cx).next().unwrap().read(cx).id()
 8250        });
 8251
 8252        let item1 = cx.new(|cx| {
 8253            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
 8254        });
 8255        let item2 = cx.new(|cx| {
 8256            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "two.txt", cx)])
 8257        });
 8258
 8259        // Add an item to an empty pane
 8260        workspace.update_in(cx, |workspace, window, cx| {
 8261            workspace.add_item_to_active_pane(Box::new(item1), None, true, window, cx)
 8262        });
 8263        project.update(cx, |project, cx| {
 8264            assert_eq!(
 8265                project.active_entry(),
 8266                project
 8267                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
 8268                    .map(|e| e.id)
 8269            );
 8270        });
 8271        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8272
 8273        // Add a second item to a non-empty pane
 8274        workspace.update_in(cx, |workspace, window, cx| {
 8275            workspace.add_item_to_active_pane(Box::new(item2), None, true, window, cx)
 8276        });
 8277        assert_eq!(cx.window_title().as_deref(), Some("root1 — two.txt"));
 8278        project.update(cx, |project, cx| {
 8279            assert_eq!(
 8280                project.active_entry(),
 8281                project
 8282                    .entry_for_path(&(worktree_id, "two.txt").into(), cx)
 8283                    .map(|e| e.id)
 8284            );
 8285        });
 8286
 8287        // Close the active item
 8288        pane.update_in(cx, |pane, window, cx| {
 8289            pane.close_active_item(&Default::default(), window, cx)
 8290        })
 8291        .await
 8292        .unwrap();
 8293        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8294        project.update(cx, |project, cx| {
 8295            assert_eq!(
 8296                project.active_entry(),
 8297                project
 8298                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
 8299                    .map(|e| e.id)
 8300            );
 8301        });
 8302
 8303        // Add a project folder
 8304        project
 8305            .update(cx, |project, cx| {
 8306                project.find_or_create_worktree("root2", true, cx)
 8307            })
 8308            .await
 8309            .unwrap();
 8310        assert_eq!(cx.window_title().as_deref(), Some("root1, root2 — one.txt"));
 8311
 8312        // Remove a project folder
 8313        project.update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
 8314        assert_eq!(cx.window_title().as_deref(), Some("root2 — one.txt"));
 8315    }
 8316
 8317    #[gpui::test]
 8318    async fn test_close_window(cx: &mut TestAppContext) {
 8319        init_test(cx);
 8320
 8321        let fs = FakeFs::new(cx.executor());
 8322        fs.insert_tree("/root", json!({ "one": "" })).await;
 8323
 8324        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8325        let (workspace, cx) =
 8326            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8327
 8328        // When there are no dirty items, there's nothing to do.
 8329        let item1 = cx.new(TestItem::new);
 8330        workspace.update_in(cx, |w, window, cx| {
 8331            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx)
 8332        });
 8333        let task = workspace.update_in(cx, |w, window, cx| {
 8334            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8335        });
 8336        assert!(task.await.unwrap());
 8337
 8338        // When there are dirty untitled items, prompt to save each one. If the user
 8339        // cancels any prompt, then abort.
 8340        let item2 = cx.new(|cx| TestItem::new(cx).with_dirty(true));
 8341        let item3 = cx.new(|cx| {
 8342            TestItem::new(cx)
 8343                .with_dirty(true)
 8344                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8345        });
 8346        workspace.update_in(cx, |w, window, cx| {
 8347            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8348            w.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8349        });
 8350        let task = workspace.update_in(cx, |w, window, cx| {
 8351            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8352        });
 8353        cx.executor().run_until_parked();
 8354        cx.simulate_prompt_answer("Cancel"); // cancel save all
 8355        cx.executor().run_until_parked();
 8356        assert!(!cx.has_pending_prompt());
 8357        assert!(!task.await.unwrap());
 8358    }
 8359
 8360    #[gpui::test]
 8361    async fn test_close_window_with_serializable_items(cx: &mut TestAppContext) {
 8362        init_test(cx);
 8363
 8364        // Register TestItem as a serializable item
 8365        cx.update(|cx| {
 8366            register_serializable_item::<TestItem>(cx);
 8367        });
 8368
 8369        let fs = FakeFs::new(cx.executor());
 8370        fs.insert_tree("/root", json!({ "one": "" })).await;
 8371
 8372        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8373        let (workspace, cx) =
 8374            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8375
 8376        // When there are dirty untitled items, but they can serialize, then there is no prompt.
 8377        let item1 = cx.new(|cx| {
 8378            TestItem::new(cx)
 8379                .with_dirty(true)
 8380                .with_serialize(|| Some(Task::ready(Ok(()))))
 8381        });
 8382        let item2 = cx.new(|cx| {
 8383            TestItem::new(cx)
 8384                .with_dirty(true)
 8385                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8386                .with_serialize(|| Some(Task::ready(Ok(()))))
 8387        });
 8388        workspace.update_in(cx, |w, window, cx| {
 8389            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8390            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8391        });
 8392        let task = workspace.update_in(cx, |w, window, cx| {
 8393            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8394        });
 8395        assert!(task.await.unwrap());
 8396    }
 8397
 8398    #[gpui::test]
 8399    async fn test_close_pane_items(cx: &mut TestAppContext) {
 8400        init_test(cx);
 8401
 8402        let fs = FakeFs::new(cx.executor());
 8403
 8404        let project = Project::test(fs, None, cx).await;
 8405        let (workspace, cx) =
 8406            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8407
 8408        let item1 = cx.new(|cx| {
 8409            TestItem::new(cx)
 8410                .with_dirty(true)
 8411                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 8412        });
 8413        let item2 = cx.new(|cx| {
 8414            TestItem::new(cx)
 8415                .with_dirty(true)
 8416                .with_conflict(true)
 8417                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 8418        });
 8419        let item3 = cx.new(|cx| {
 8420            TestItem::new(cx)
 8421                .with_dirty(true)
 8422                .with_conflict(true)
 8423                .with_project_items(&[dirty_project_item(3, "3.txt", cx)])
 8424        });
 8425        let item4 = cx.new(|cx| {
 8426            TestItem::new(cx).with_dirty(true).with_project_items(&[{
 8427                let project_item = TestProjectItem::new_untitled(cx);
 8428                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8429                project_item
 8430            }])
 8431        });
 8432        let pane = workspace.update_in(cx, |workspace, window, cx| {
 8433            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8434            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8435            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8436            workspace.add_item_to_active_pane(Box::new(item4.clone()), None, true, window, cx);
 8437            workspace.active_pane().clone()
 8438        });
 8439
 8440        let close_items = pane.update_in(cx, |pane, window, cx| {
 8441            pane.activate_item(1, true, true, window, cx);
 8442            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8443            let item1_id = item1.item_id();
 8444            let item3_id = item3.item_id();
 8445            let item4_id = item4.item_id();
 8446            pane.close_items(window, cx, SaveIntent::Close, move |id| {
 8447                [item1_id, item3_id, item4_id].contains(&id)
 8448            })
 8449        });
 8450        cx.executor().run_until_parked();
 8451
 8452        assert!(cx.has_pending_prompt());
 8453        cx.simulate_prompt_answer("Save all");
 8454
 8455        cx.executor().run_until_parked();
 8456
 8457        // Item 1 is saved. There's a prompt to save item 3.
 8458        pane.update(cx, |pane, cx| {
 8459            assert_eq!(item1.read(cx).save_count, 1);
 8460            assert_eq!(item1.read(cx).save_as_count, 0);
 8461            assert_eq!(item1.read(cx).reload_count, 0);
 8462            assert_eq!(pane.items_len(), 3);
 8463            assert_eq!(pane.active_item().unwrap().item_id(), item3.item_id());
 8464        });
 8465        assert!(cx.has_pending_prompt());
 8466
 8467        // Cancel saving item 3.
 8468        cx.simulate_prompt_answer("Discard");
 8469        cx.executor().run_until_parked();
 8470
 8471        // Item 3 is reloaded. There's a prompt to save item 4.
 8472        pane.update(cx, |pane, cx| {
 8473            assert_eq!(item3.read(cx).save_count, 0);
 8474            assert_eq!(item3.read(cx).save_as_count, 0);
 8475            assert_eq!(item3.read(cx).reload_count, 1);
 8476            assert_eq!(pane.items_len(), 2);
 8477            assert_eq!(pane.active_item().unwrap().item_id(), item4.item_id());
 8478        });
 8479
 8480        // There's a prompt for a path for item 4.
 8481        cx.simulate_new_path_selection(|_| Some(Default::default()));
 8482        close_items.await.unwrap();
 8483
 8484        // The requested items are closed.
 8485        pane.update(cx, |pane, cx| {
 8486            assert_eq!(item4.read(cx).save_count, 0);
 8487            assert_eq!(item4.read(cx).save_as_count, 1);
 8488            assert_eq!(item4.read(cx).reload_count, 0);
 8489            assert_eq!(pane.items_len(), 1);
 8490            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8491        });
 8492    }
 8493
 8494    #[gpui::test]
 8495    async fn test_prompting_to_save_only_on_last_item_for_entry(cx: &mut TestAppContext) {
 8496        init_test(cx);
 8497
 8498        let fs = FakeFs::new(cx.executor());
 8499        let project = Project::test(fs, [], cx).await;
 8500        let (workspace, cx) =
 8501            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8502
 8503        // Create several workspace items with single project entries, and two
 8504        // workspace items with multiple project entries.
 8505        let single_entry_items = (0..=4)
 8506            .map(|project_entry_id| {
 8507                cx.new(|cx| {
 8508                    TestItem::new(cx)
 8509                        .with_dirty(true)
 8510                        .with_project_items(&[dirty_project_item(
 8511                            project_entry_id,
 8512                            &format!("{project_entry_id}.txt"),
 8513                            cx,
 8514                        )])
 8515                })
 8516            })
 8517            .collect::<Vec<_>>();
 8518        let item_2_3 = cx.new(|cx| {
 8519            TestItem::new(cx)
 8520                .with_dirty(true)
 8521                .with_singleton(false)
 8522                .with_project_items(&[
 8523                    single_entry_items[2].read(cx).project_items[0].clone(),
 8524                    single_entry_items[3].read(cx).project_items[0].clone(),
 8525                ])
 8526        });
 8527        let item_3_4 = cx.new(|cx| {
 8528            TestItem::new(cx)
 8529                .with_dirty(true)
 8530                .with_singleton(false)
 8531                .with_project_items(&[
 8532                    single_entry_items[3].read(cx).project_items[0].clone(),
 8533                    single_entry_items[4].read(cx).project_items[0].clone(),
 8534                ])
 8535        });
 8536
 8537        // Create two panes that contain the following project entries:
 8538        //   left pane:
 8539        //     multi-entry items:   (2, 3)
 8540        //     single-entry items:  0, 2, 3, 4
 8541        //   right pane:
 8542        //     single-entry items:  4, 1
 8543        //     multi-entry items:   (3, 4)
 8544        let (left_pane, right_pane) = workspace.update_in(cx, |workspace, window, cx| {
 8545            let left_pane = workspace.active_pane().clone();
 8546            workspace.add_item_to_active_pane(Box::new(item_2_3.clone()), None, true, window, cx);
 8547            workspace.add_item_to_active_pane(
 8548                single_entry_items[0].boxed_clone(),
 8549                None,
 8550                true,
 8551                window,
 8552                cx,
 8553            );
 8554            workspace.add_item_to_active_pane(
 8555                single_entry_items[2].boxed_clone(),
 8556                None,
 8557                true,
 8558                window,
 8559                cx,
 8560            );
 8561            workspace.add_item_to_active_pane(
 8562                single_entry_items[3].boxed_clone(),
 8563                None,
 8564                true,
 8565                window,
 8566                cx,
 8567            );
 8568            workspace.add_item_to_active_pane(
 8569                single_entry_items[4].boxed_clone(),
 8570                None,
 8571                true,
 8572                window,
 8573                cx,
 8574            );
 8575
 8576            let right_pane = workspace
 8577                .split_and_clone(left_pane.clone(), SplitDirection::Right, window, cx)
 8578                .unwrap();
 8579
 8580            right_pane.update(cx, |pane, cx| {
 8581                pane.add_item(
 8582                    single_entry_items[1].boxed_clone(),
 8583                    true,
 8584                    true,
 8585                    None,
 8586                    window,
 8587                    cx,
 8588                );
 8589                pane.add_item(Box::new(item_3_4.clone()), true, true, None, window, cx);
 8590            });
 8591
 8592            (left_pane, right_pane)
 8593        });
 8594
 8595        cx.focus(&right_pane);
 8596
 8597        let mut close = right_pane.update_in(cx, |pane, window, cx| {
 8598            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8599                .unwrap()
 8600        });
 8601        cx.executor().run_until_parked();
 8602
 8603        let msg = cx.pending_prompt().unwrap().0;
 8604        assert!(msg.contains("1.txt"));
 8605        assert!(!msg.contains("2.txt"));
 8606        assert!(!msg.contains("3.txt"));
 8607        assert!(!msg.contains("4.txt"));
 8608
 8609        cx.simulate_prompt_answer("Cancel");
 8610        close.await;
 8611
 8612        left_pane
 8613            .update_in(cx, |left_pane, window, cx| {
 8614                left_pane.close_item_by_id(
 8615                    single_entry_items[3].entity_id(),
 8616                    SaveIntent::Skip,
 8617                    window,
 8618                    cx,
 8619                )
 8620            })
 8621            .await
 8622            .unwrap();
 8623
 8624        close = right_pane.update_in(cx, |pane, window, cx| {
 8625            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8626                .unwrap()
 8627        });
 8628        cx.executor().run_until_parked();
 8629
 8630        let details = cx.pending_prompt().unwrap().1;
 8631        assert!(details.contains("1.txt"));
 8632        assert!(!details.contains("2.txt"));
 8633        assert!(details.contains("3.txt"));
 8634        // ideally this assertion could be made, but today we can only
 8635        // save whole items not project items, so the orphaned item 3 causes
 8636        // 4 to be saved too.
 8637        // assert!(!details.contains("4.txt"));
 8638
 8639        cx.simulate_prompt_answer("Save all");
 8640
 8641        cx.executor().run_until_parked();
 8642        close.await;
 8643        right_pane.read_with(cx, |pane, _| {
 8644            assert_eq!(pane.items_len(), 0);
 8645        });
 8646    }
 8647
 8648    #[gpui::test]
 8649    async fn test_autosave(cx: &mut gpui::TestAppContext) {
 8650        init_test(cx);
 8651
 8652        let fs = FakeFs::new(cx.executor());
 8653        let project = Project::test(fs, [], cx).await;
 8654        let (workspace, cx) =
 8655            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8656        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8657
 8658        let item = cx.new(|cx| {
 8659            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8660        });
 8661        let item_id = item.entity_id();
 8662        workspace.update_in(cx, |workspace, window, cx| {
 8663            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8664        });
 8665
 8666        // Autosave on window change.
 8667        item.update(cx, |item, cx| {
 8668            SettingsStore::update_global(cx, |settings, cx| {
 8669                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8670                    settings.autosave = Some(AutosaveSetting::OnWindowChange);
 8671                })
 8672            });
 8673            item.is_dirty = true;
 8674        });
 8675
 8676        // Deactivating the window saves the file.
 8677        cx.deactivate_window();
 8678        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8679
 8680        // Re-activating the window doesn't save the file.
 8681        cx.update(|window, _| window.activate_window());
 8682        cx.executor().run_until_parked();
 8683        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8684
 8685        // Autosave on focus change.
 8686        item.update_in(cx, |item, window, cx| {
 8687            cx.focus_self(window);
 8688            SettingsStore::update_global(cx, |settings, cx| {
 8689                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8690                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
 8691                })
 8692            });
 8693            item.is_dirty = true;
 8694        });
 8695
 8696        // Blurring the item saves the file.
 8697        item.update_in(cx, |_, window, _| window.blur());
 8698        cx.executor().run_until_parked();
 8699        item.read_with(cx, |item, _| assert_eq!(item.save_count, 2));
 8700
 8701        // Deactivating the window still saves the file.
 8702        item.update_in(cx, |item, window, cx| {
 8703            cx.focus_self(window);
 8704            item.is_dirty = true;
 8705        });
 8706        cx.deactivate_window();
 8707        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
 8708
 8709        // Autosave after delay.
 8710        item.update(cx, |item, cx| {
 8711            SettingsStore::update_global(cx, |settings, cx| {
 8712                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8713                    settings.autosave = Some(AutosaveSetting::AfterDelay { milliseconds: 500 });
 8714                })
 8715            });
 8716            item.is_dirty = true;
 8717            cx.emit(ItemEvent::Edit);
 8718        });
 8719
 8720        // Delay hasn't fully expired, so the file is still dirty and unsaved.
 8721        cx.executor().advance_clock(Duration::from_millis(250));
 8722        item.read_with(cx, |item, _| assert_eq!(item.save_count, 3));
 8723
 8724        // After delay expires, the file is saved.
 8725        cx.executor().advance_clock(Duration::from_millis(250));
 8726        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
 8727
 8728        // Autosave on focus change, ensuring closing the tab counts as such.
 8729        item.update(cx, |item, cx| {
 8730            SettingsStore::update_global(cx, |settings, cx| {
 8731                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8732                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
 8733                })
 8734            });
 8735            item.is_dirty = true;
 8736            for project_item in &mut item.project_items {
 8737                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8738            }
 8739        });
 8740
 8741        pane.update_in(cx, |pane, window, cx| {
 8742            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8743        })
 8744        .await
 8745        .unwrap();
 8746        assert!(!cx.has_pending_prompt());
 8747        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8748
 8749        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
 8750        workspace.update_in(cx, |workspace, window, cx| {
 8751            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8752        });
 8753        item.update_in(cx, |item, window, cx| {
 8754            item.project_items[0].update(cx, |item, _| {
 8755                item.entry_id = None;
 8756            });
 8757            item.is_dirty = true;
 8758            window.blur();
 8759        });
 8760        cx.run_until_parked();
 8761        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8762
 8763        // Ensure autosave is prevented for deleted files also when closing the buffer.
 8764        let _close_items = pane.update_in(cx, |pane, window, cx| {
 8765            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8766        });
 8767        cx.run_until_parked();
 8768        assert!(cx.has_pending_prompt());
 8769        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8770    }
 8771
 8772    #[gpui::test]
 8773    async fn test_pane_navigation(cx: &mut gpui::TestAppContext) {
 8774        init_test(cx);
 8775
 8776        let fs = FakeFs::new(cx.executor());
 8777
 8778        let project = Project::test(fs, [], cx).await;
 8779        let (workspace, cx) =
 8780            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8781
 8782        let item = cx.new(|cx| {
 8783            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8784        });
 8785        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8786        let toolbar = pane.read_with(cx, |pane, _| pane.toolbar().clone());
 8787        let toolbar_notify_count = Rc::new(RefCell::new(0));
 8788
 8789        workspace.update_in(cx, |workspace, window, cx| {
 8790            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8791            let toolbar_notification_count = toolbar_notify_count.clone();
 8792            cx.observe_in(&toolbar, window, move |_, _, _, _| {
 8793                *toolbar_notification_count.borrow_mut() += 1
 8794            })
 8795            .detach();
 8796        });
 8797
 8798        pane.read_with(cx, |pane, _| {
 8799            assert!(!pane.can_navigate_backward());
 8800            assert!(!pane.can_navigate_forward());
 8801        });
 8802
 8803        item.update_in(cx, |item, _, cx| {
 8804            item.set_state("one".to_string(), cx);
 8805        });
 8806
 8807        // Toolbar must be notified to re-render the navigation buttons
 8808        assert_eq!(*toolbar_notify_count.borrow(), 1);
 8809
 8810        pane.read_with(cx, |pane, _| {
 8811            assert!(pane.can_navigate_backward());
 8812            assert!(!pane.can_navigate_forward());
 8813        });
 8814
 8815        workspace
 8816            .update_in(cx, |workspace, window, cx| {
 8817                workspace.go_back(pane.downgrade(), window, cx)
 8818            })
 8819            .await
 8820            .unwrap();
 8821
 8822        assert_eq!(*toolbar_notify_count.borrow(), 2);
 8823        pane.read_with(cx, |pane, _| {
 8824            assert!(!pane.can_navigate_backward());
 8825            assert!(pane.can_navigate_forward());
 8826        });
 8827    }
 8828
 8829    #[gpui::test]
 8830    async fn test_toggle_docks_and_panels(cx: &mut gpui::TestAppContext) {
 8831        init_test(cx);
 8832        let fs = FakeFs::new(cx.executor());
 8833
 8834        let project = Project::test(fs, [], cx).await;
 8835        let (workspace, cx) =
 8836            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8837
 8838        let panel = workspace.update_in(cx, |workspace, window, cx| {
 8839            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 8840            workspace.add_panel(panel.clone(), window, cx);
 8841
 8842            workspace
 8843                .right_dock()
 8844                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
 8845
 8846            panel
 8847        });
 8848
 8849        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8850        pane.update_in(cx, |pane, window, cx| {
 8851            let item = cx.new(TestItem::new);
 8852            pane.add_item(Box::new(item), true, true, None, window, cx);
 8853        });
 8854
 8855        // Transfer focus from center to panel
 8856        workspace.update_in(cx, |workspace, window, cx| {
 8857            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8858        });
 8859
 8860        workspace.update_in(cx, |workspace, window, cx| {
 8861            assert!(workspace.right_dock().read(cx).is_open());
 8862            assert!(!panel.is_zoomed(window, cx));
 8863            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8864        });
 8865
 8866        // Transfer focus from panel to center
 8867        workspace.update_in(cx, |workspace, window, cx| {
 8868            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8869        });
 8870
 8871        workspace.update_in(cx, |workspace, window, cx| {
 8872            assert!(workspace.right_dock().read(cx).is_open());
 8873            assert!(!panel.is_zoomed(window, cx));
 8874            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8875        });
 8876
 8877        // Close the dock
 8878        workspace.update_in(cx, |workspace, window, cx| {
 8879            workspace.toggle_dock(DockPosition::Right, window, cx);
 8880        });
 8881
 8882        workspace.update_in(cx, |workspace, window, cx| {
 8883            assert!(!workspace.right_dock().read(cx).is_open());
 8884            assert!(!panel.is_zoomed(window, cx));
 8885            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8886        });
 8887
 8888        // Open the dock
 8889        workspace.update_in(cx, |workspace, window, cx| {
 8890            workspace.toggle_dock(DockPosition::Right, window, cx);
 8891        });
 8892
 8893        workspace.update_in(cx, |workspace, window, cx| {
 8894            assert!(workspace.right_dock().read(cx).is_open());
 8895            assert!(!panel.is_zoomed(window, cx));
 8896            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8897        });
 8898
 8899        // Focus and zoom panel
 8900        panel.update_in(cx, |panel, window, cx| {
 8901            cx.focus_self(window);
 8902            panel.set_zoomed(true, window, cx)
 8903        });
 8904
 8905        workspace.update_in(cx, |workspace, window, cx| {
 8906            assert!(workspace.right_dock().read(cx).is_open());
 8907            assert!(panel.is_zoomed(window, cx));
 8908            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8909        });
 8910
 8911        // Transfer focus to the center closes the dock
 8912        workspace.update_in(cx, |workspace, window, cx| {
 8913            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8914        });
 8915
 8916        workspace.update_in(cx, |workspace, window, cx| {
 8917            assert!(!workspace.right_dock().read(cx).is_open());
 8918            assert!(panel.is_zoomed(window, cx));
 8919            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8920        });
 8921
 8922        // Transferring focus back to the panel keeps it zoomed
 8923        workspace.update_in(cx, |workspace, window, cx| {
 8924            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8925        });
 8926
 8927        workspace.update_in(cx, |workspace, window, cx| {
 8928            assert!(workspace.right_dock().read(cx).is_open());
 8929            assert!(panel.is_zoomed(window, cx));
 8930            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8931        });
 8932
 8933        // Close the dock while it is zoomed
 8934        workspace.update_in(cx, |workspace, window, cx| {
 8935            workspace.toggle_dock(DockPosition::Right, window, cx)
 8936        });
 8937
 8938        workspace.update_in(cx, |workspace, window, cx| {
 8939            assert!(!workspace.right_dock().read(cx).is_open());
 8940            assert!(panel.is_zoomed(window, cx));
 8941            assert!(workspace.zoomed.is_none());
 8942            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8943        });
 8944
 8945        // Opening the dock, when it's zoomed, retains focus
 8946        workspace.update_in(cx, |workspace, window, cx| {
 8947            workspace.toggle_dock(DockPosition::Right, window, cx)
 8948        });
 8949
 8950        workspace.update_in(cx, |workspace, window, cx| {
 8951            assert!(workspace.right_dock().read(cx).is_open());
 8952            assert!(panel.is_zoomed(window, cx));
 8953            assert!(workspace.zoomed.is_some());
 8954            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8955        });
 8956
 8957        // Unzoom and close the panel, zoom the active pane.
 8958        panel.update_in(cx, |panel, window, cx| panel.set_zoomed(false, window, cx));
 8959        workspace.update_in(cx, |workspace, window, cx| {
 8960            workspace.toggle_dock(DockPosition::Right, window, cx)
 8961        });
 8962        pane.update_in(cx, |pane, window, cx| {
 8963            pane.toggle_zoom(&Default::default(), window, cx)
 8964        });
 8965
 8966        // Opening a dock unzooms the pane.
 8967        workspace.update_in(cx, |workspace, window, cx| {
 8968            workspace.toggle_dock(DockPosition::Right, window, cx)
 8969        });
 8970        workspace.update_in(cx, |workspace, window, cx| {
 8971            let pane = pane.read(cx);
 8972            assert!(!pane.is_zoomed());
 8973            assert!(!pane.focus_handle(cx).is_focused(window));
 8974            assert!(workspace.right_dock().read(cx).is_open());
 8975            assert!(workspace.zoomed.is_none());
 8976        });
 8977    }
 8978
 8979    #[gpui::test]
 8980    async fn test_join_pane_into_next(cx: &mut gpui::TestAppContext) {
 8981        init_test(cx);
 8982
 8983        let fs = FakeFs::new(cx.executor());
 8984
 8985        let project = Project::test(fs, None, cx).await;
 8986        let (workspace, cx) =
 8987            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8988
 8989        // Let's arrange the panes like this:
 8990        //
 8991        // +-----------------------+
 8992        // |         top           |
 8993        // +------+--------+-------+
 8994        // | left | center | right |
 8995        // +------+--------+-------+
 8996        // |        bottom         |
 8997        // +-----------------------+
 8998
 8999        let top_item = cx.new(|cx| {
 9000            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "top.txt", cx)])
 9001        });
 9002        let bottom_item = cx.new(|cx| {
 9003            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "bottom.txt", cx)])
 9004        });
 9005        let left_item = cx.new(|cx| {
 9006            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "left.txt", cx)])
 9007        });
 9008        let right_item = cx.new(|cx| {
 9009            TestItem::new(cx).with_project_items(&[TestProjectItem::new(4, "right.txt", cx)])
 9010        });
 9011        let center_item = cx.new(|cx| {
 9012            TestItem::new(cx).with_project_items(&[TestProjectItem::new(5, "center.txt", cx)])
 9013        });
 9014
 9015        let top_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9016            let top_pane_id = workspace.active_pane().entity_id();
 9017            workspace.add_item_to_active_pane(Box::new(top_item.clone()), None, false, window, cx);
 9018            workspace.split_pane(
 9019                workspace.active_pane().clone(),
 9020                SplitDirection::Down,
 9021                window,
 9022                cx,
 9023            );
 9024            top_pane_id
 9025        });
 9026        let bottom_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9027            let bottom_pane_id = workspace.active_pane().entity_id();
 9028            workspace.add_item_to_active_pane(
 9029                Box::new(bottom_item.clone()),
 9030                None,
 9031                false,
 9032                window,
 9033                cx,
 9034            );
 9035            workspace.split_pane(
 9036                workspace.active_pane().clone(),
 9037                SplitDirection::Up,
 9038                window,
 9039                cx,
 9040            );
 9041            bottom_pane_id
 9042        });
 9043        let left_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9044            let left_pane_id = workspace.active_pane().entity_id();
 9045            workspace.add_item_to_active_pane(Box::new(left_item.clone()), None, false, window, cx);
 9046            workspace.split_pane(
 9047                workspace.active_pane().clone(),
 9048                SplitDirection::Right,
 9049                window,
 9050                cx,
 9051            );
 9052            left_pane_id
 9053        });
 9054        let right_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9055            let right_pane_id = workspace.active_pane().entity_id();
 9056            workspace.add_item_to_active_pane(
 9057                Box::new(right_item.clone()),
 9058                None,
 9059                false,
 9060                window,
 9061                cx,
 9062            );
 9063            workspace.split_pane(
 9064                workspace.active_pane().clone(),
 9065                SplitDirection::Left,
 9066                window,
 9067                cx,
 9068            );
 9069            right_pane_id
 9070        });
 9071        let center_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9072            let center_pane_id = workspace.active_pane().entity_id();
 9073            workspace.add_item_to_active_pane(
 9074                Box::new(center_item.clone()),
 9075                None,
 9076                false,
 9077                window,
 9078                cx,
 9079            );
 9080            center_pane_id
 9081        });
 9082        cx.executor().run_until_parked();
 9083
 9084        workspace.update_in(cx, |workspace, window, cx| {
 9085            assert_eq!(center_pane_id, workspace.active_pane().entity_id());
 9086
 9087            // Join into next from center pane into right
 9088            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9089        });
 9090
 9091        workspace.update_in(cx, |workspace, window, cx| {
 9092            let active_pane = workspace.active_pane();
 9093            assert_eq!(right_pane_id, active_pane.entity_id());
 9094            assert_eq!(2, active_pane.read(cx).items_len());
 9095            let item_ids_in_pane =
 9096                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9097            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9098            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9099
 9100            // Join into next from right pane into bottom
 9101            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9102        });
 9103
 9104        workspace.update_in(cx, |workspace, window, cx| {
 9105            let active_pane = workspace.active_pane();
 9106            assert_eq!(bottom_pane_id, active_pane.entity_id());
 9107            assert_eq!(3, active_pane.read(cx).items_len());
 9108            let item_ids_in_pane =
 9109                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9110            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9111            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9112            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9113
 9114            // Join into next from bottom pane into left
 9115            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9116        });
 9117
 9118        workspace.update_in(cx, |workspace, window, cx| {
 9119            let active_pane = workspace.active_pane();
 9120            assert_eq!(left_pane_id, active_pane.entity_id());
 9121            assert_eq!(4, active_pane.read(cx).items_len());
 9122            let item_ids_in_pane =
 9123                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9124            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9125            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9126            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9127            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9128
 9129            // Join into next from left pane into top
 9130            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9131        });
 9132
 9133        workspace.update_in(cx, |workspace, window, cx| {
 9134            let active_pane = workspace.active_pane();
 9135            assert_eq!(top_pane_id, active_pane.entity_id());
 9136            assert_eq!(5, active_pane.read(cx).items_len());
 9137            let item_ids_in_pane =
 9138                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9139            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9140            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9141            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9142            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9143            assert!(item_ids_in_pane.contains(&top_item.item_id()));
 9144
 9145            // Single pane left: no-op
 9146            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx)
 9147        });
 9148
 9149        workspace.update(cx, |workspace, _cx| {
 9150            let active_pane = workspace.active_pane();
 9151            assert_eq!(top_pane_id, active_pane.entity_id());
 9152        });
 9153    }
 9154
 9155    fn add_an_item_to_active_pane(
 9156        cx: &mut VisualTestContext,
 9157        workspace: &Entity<Workspace>,
 9158        item_id: u64,
 9159    ) -> Entity<TestItem> {
 9160        let item = cx.new(|cx| {
 9161            TestItem::new(cx).with_project_items(&[TestProjectItem::new(
 9162                item_id,
 9163                "item{item_id}.txt",
 9164                cx,
 9165            )])
 9166        });
 9167        workspace.update_in(cx, |workspace, window, cx| {
 9168            workspace.add_item_to_active_pane(Box::new(item.clone()), None, false, window, cx);
 9169        });
 9170        return item;
 9171    }
 9172
 9173    fn split_pane(cx: &mut VisualTestContext, workspace: &Entity<Workspace>) -> Entity<Pane> {
 9174        return workspace.update_in(cx, |workspace, window, cx| {
 9175            let new_pane = workspace.split_pane(
 9176                workspace.active_pane().clone(),
 9177                SplitDirection::Right,
 9178                window,
 9179                cx,
 9180            );
 9181            new_pane
 9182        });
 9183    }
 9184
 9185    #[gpui::test]
 9186    async fn test_join_all_panes(cx: &mut gpui::TestAppContext) {
 9187        init_test(cx);
 9188        let fs = FakeFs::new(cx.executor());
 9189        let project = Project::test(fs, None, cx).await;
 9190        let (workspace, cx) =
 9191            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9192
 9193        add_an_item_to_active_pane(cx, &workspace, 1);
 9194        split_pane(cx, &workspace);
 9195        add_an_item_to_active_pane(cx, &workspace, 2);
 9196        split_pane(cx, &workspace); // empty pane
 9197        split_pane(cx, &workspace);
 9198        let last_item = add_an_item_to_active_pane(cx, &workspace, 3);
 9199
 9200        cx.executor().run_until_parked();
 9201
 9202        workspace.update(cx, |workspace, cx| {
 9203            let num_panes = workspace.panes().len();
 9204            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9205            let active_item = workspace
 9206                .active_pane()
 9207                .read(cx)
 9208                .active_item()
 9209                .expect("item is in focus");
 9210
 9211            assert_eq!(num_panes, 4);
 9212            assert_eq!(num_items_in_current_pane, 1);
 9213            assert_eq!(active_item.item_id(), last_item.item_id());
 9214        });
 9215
 9216        workspace.update_in(cx, |workspace, window, cx| {
 9217            workspace.join_all_panes(window, cx);
 9218        });
 9219
 9220        workspace.update(cx, |workspace, cx| {
 9221            let num_panes = workspace.panes().len();
 9222            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9223            let active_item = workspace
 9224                .active_pane()
 9225                .read(cx)
 9226                .active_item()
 9227                .expect("item is in focus");
 9228
 9229            assert_eq!(num_panes, 1);
 9230            assert_eq!(num_items_in_current_pane, 3);
 9231            assert_eq!(active_item.item_id(), last_item.item_id());
 9232        });
 9233    }
 9234    struct TestModal(FocusHandle);
 9235
 9236    impl TestModal {
 9237        fn new(_: &mut Window, cx: &mut Context<Self>) -> Self {
 9238            Self(cx.focus_handle())
 9239        }
 9240    }
 9241
 9242    impl EventEmitter<DismissEvent> for TestModal {}
 9243
 9244    impl Focusable for TestModal {
 9245        fn focus_handle(&self, _cx: &App) -> FocusHandle {
 9246            self.0.clone()
 9247        }
 9248    }
 9249
 9250    impl ModalView for TestModal {}
 9251
 9252    impl Render for TestModal {
 9253        fn render(
 9254            &mut self,
 9255            _window: &mut Window,
 9256            _cx: &mut Context<TestModal>,
 9257        ) -> impl IntoElement {
 9258            div().track_focus(&self.0)
 9259        }
 9260    }
 9261
 9262    #[gpui::test]
 9263    async fn test_panels(cx: &mut gpui::TestAppContext) {
 9264        init_test(cx);
 9265        let fs = FakeFs::new(cx.executor());
 9266
 9267        let project = Project::test(fs, [], cx).await;
 9268        let (workspace, cx) =
 9269            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9270
 9271        let (panel_1, panel_2) = workspace.update_in(cx, |workspace, window, cx| {
 9272            let panel_1 = cx.new(|cx| TestPanel::new(DockPosition::Left, cx));
 9273            workspace.add_panel(panel_1.clone(), window, cx);
 9274            workspace.toggle_dock(DockPosition::Left, window, cx);
 9275            let panel_2 = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 9276            workspace.add_panel(panel_2.clone(), window, cx);
 9277            workspace.toggle_dock(DockPosition::Right, window, cx);
 9278
 9279            let left_dock = workspace.left_dock();
 9280            assert_eq!(
 9281                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9282                panel_1.panel_id()
 9283            );
 9284            assert_eq!(
 9285                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9286                panel_1.size(window, cx)
 9287            );
 9288
 9289            left_dock.update(cx, |left_dock, cx| {
 9290                left_dock.resize_active_panel(Some(px(1337.)), window, cx)
 9291            });
 9292            assert_eq!(
 9293                workspace
 9294                    .right_dock()
 9295                    .read(cx)
 9296                    .visible_panel()
 9297                    .unwrap()
 9298                    .panel_id(),
 9299                panel_2.panel_id(),
 9300            );
 9301
 9302            (panel_1, panel_2)
 9303        });
 9304
 9305        // Move panel_1 to the right
 9306        panel_1.update_in(cx, |panel_1, window, cx| {
 9307            panel_1.set_position(DockPosition::Right, window, cx)
 9308        });
 9309
 9310        workspace.update_in(cx, |workspace, window, cx| {
 9311            // Since panel_1 was visible on the left, it should now be visible now that it's been moved to the right.
 9312            // Since it was the only panel on the left, the left dock should now be closed.
 9313            assert!(!workspace.left_dock().read(cx).is_open());
 9314            assert!(workspace.left_dock().read(cx).visible_panel().is_none());
 9315            let right_dock = workspace.right_dock();
 9316            assert_eq!(
 9317                right_dock.read(cx).visible_panel().unwrap().panel_id(),
 9318                panel_1.panel_id()
 9319            );
 9320            assert_eq!(
 9321                right_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9322                px(1337.)
 9323            );
 9324
 9325            // Now we move panel_2 to the left
 9326            panel_2.set_position(DockPosition::Left, window, cx);
 9327        });
 9328
 9329        workspace.update(cx, |workspace, cx| {
 9330            // Since panel_2 was not visible on the right, we don't open the left dock.
 9331            assert!(!workspace.left_dock().read(cx).is_open());
 9332            // And the right dock is unaffected in its displaying of panel_1
 9333            assert!(workspace.right_dock().read(cx).is_open());
 9334            assert_eq!(
 9335                workspace
 9336                    .right_dock()
 9337                    .read(cx)
 9338                    .visible_panel()
 9339                    .unwrap()
 9340                    .panel_id(),
 9341                panel_1.panel_id(),
 9342            );
 9343        });
 9344
 9345        // Move panel_1 back to the left
 9346        panel_1.update_in(cx, |panel_1, window, cx| {
 9347            panel_1.set_position(DockPosition::Left, window, cx)
 9348        });
 9349
 9350        workspace.update_in(cx, |workspace, window, cx| {
 9351            // Since panel_1 was visible on the right, we open the left dock and make panel_1 active.
 9352            let left_dock = workspace.left_dock();
 9353            assert!(left_dock.read(cx).is_open());
 9354            assert_eq!(
 9355                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9356                panel_1.panel_id()
 9357            );
 9358            assert_eq!(
 9359                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9360                px(1337.)
 9361            );
 9362            // And the right dock should be closed as it no longer has any panels.
 9363            assert!(!workspace.right_dock().read(cx).is_open());
 9364
 9365            // Now we move panel_1 to the bottom
 9366            panel_1.set_position(DockPosition::Bottom, window, cx);
 9367        });
 9368
 9369        workspace.update_in(cx, |workspace, window, cx| {
 9370            // Since panel_1 was visible on the left, we close the left dock.
 9371            assert!(!workspace.left_dock().read(cx).is_open());
 9372            // The bottom dock is sized based on the panel's default size,
 9373            // since the panel orientation changed from vertical to horizontal.
 9374            let bottom_dock = workspace.bottom_dock();
 9375            assert_eq!(
 9376                bottom_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9377                panel_1.size(window, cx),
 9378            );
 9379            // Close bottom dock and move panel_1 back to the left.
 9380            bottom_dock.update(cx, |bottom_dock, cx| {
 9381                bottom_dock.set_open(false, window, cx)
 9382            });
 9383            panel_1.set_position(DockPosition::Left, window, cx);
 9384        });
 9385
 9386        // Emit activated event on panel 1
 9387        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Activate));
 9388
 9389        // Now the left dock is open and panel_1 is active and focused.
 9390        workspace.update_in(cx, |workspace, window, cx| {
 9391            let left_dock = workspace.left_dock();
 9392            assert!(left_dock.read(cx).is_open());
 9393            assert_eq!(
 9394                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9395                panel_1.panel_id(),
 9396            );
 9397            assert!(panel_1.focus_handle(cx).is_focused(window));
 9398        });
 9399
 9400        // Emit closed event on panel 2, which is not active
 9401        panel_2.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9402
 9403        // Wo don't close the left dock, because panel_2 wasn't the active panel
 9404        workspace.update(cx, |workspace, cx| {
 9405            let left_dock = workspace.left_dock();
 9406            assert!(left_dock.read(cx).is_open());
 9407            assert_eq!(
 9408                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9409                panel_1.panel_id(),
 9410            );
 9411        });
 9412
 9413        // Emitting a ZoomIn event shows the panel as zoomed.
 9414        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomIn));
 9415        workspace.read_with(cx, |workspace, _| {
 9416            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9417            assert_eq!(workspace.zoomed_position, Some(DockPosition::Left));
 9418        });
 9419
 9420        // Move panel to another dock while it is zoomed
 9421        panel_1.update_in(cx, |panel, window, cx| {
 9422            panel.set_position(DockPosition::Right, window, cx)
 9423        });
 9424        workspace.read_with(cx, |workspace, _| {
 9425            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9426
 9427            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9428        });
 9429
 9430        // This is a helper for getting a:
 9431        // - valid focus on an element,
 9432        // - that isn't a part of the panes and panels system of the Workspace,
 9433        // - and doesn't trigger the 'on_focus_lost' API.
 9434        let focus_other_view = {
 9435            let workspace = workspace.clone();
 9436            move |cx: &mut VisualTestContext| {
 9437                workspace.update_in(cx, |workspace, window, cx| {
 9438                    if let Some(_) = workspace.active_modal::<TestModal>(cx) {
 9439                        workspace.toggle_modal(window, cx, TestModal::new);
 9440                        workspace.toggle_modal(window, cx, TestModal::new);
 9441                    } else {
 9442                        workspace.toggle_modal(window, cx, TestModal::new);
 9443                    }
 9444                })
 9445            }
 9446        };
 9447
 9448        // If focus is transferred to another view that's not a panel or another pane, we still show
 9449        // the panel as zoomed.
 9450        focus_other_view(cx);
 9451        workspace.read_with(cx, |workspace, _| {
 9452            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9453            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9454        });
 9455
 9456        // If focus is transferred elsewhere in the workspace, the panel is no longer zoomed.
 9457        workspace.update_in(cx, |_workspace, window, cx| {
 9458            cx.focus_self(window);
 9459        });
 9460        workspace.read_with(cx, |workspace, _| {
 9461            assert_eq!(workspace.zoomed, None);
 9462            assert_eq!(workspace.zoomed_position, None);
 9463        });
 9464
 9465        // If focus is transferred again to another view that's not a panel or a pane, we won't
 9466        // show the panel as zoomed because it wasn't zoomed before.
 9467        focus_other_view(cx);
 9468        workspace.read_with(cx, |workspace, _| {
 9469            assert_eq!(workspace.zoomed, None);
 9470            assert_eq!(workspace.zoomed_position, None);
 9471        });
 9472
 9473        // When the panel is activated, it is zoomed again.
 9474        cx.dispatch_action(ToggleRightDock);
 9475        workspace.read_with(cx, |workspace, _| {
 9476            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9477            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9478        });
 9479
 9480        // Emitting a ZoomOut event unzooms the panel.
 9481        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomOut));
 9482        workspace.read_with(cx, |workspace, _| {
 9483            assert_eq!(workspace.zoomed, None);
 9484            assert_eq!(workspace.zoomed_position, None);
 9485        });
 9486
 9487        // Emit closed event on panel 1, which is active
 9488        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9489
 9490        // Now the left dock is closed, because panel_1 was the active panel
 9491        workspace.update(cx, |workspace, cx| {
 9492            let right_dock = workspace.right_dock();
 9493            assert!(!right_dock.read(cx).is_open());
 9494        });
 9495    }
 9496
 9497    #[gpui::test]
 9498    async fn test_no_save_prompt_when_multi_buffer_dirty_items_closed(cx: &mut TestAppContext) {
 9499        init_test(cx);
 9500
 9501        let fs = FakeFs::new(cx.background_executor.clone());
 9502        let project = Project::test(fs, [], cx).await;
 9503        let (workspace, cx) =
 9504            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9505        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9506
 9507        let dirty_regular_buffer = cx.new(|cx| {
 9508            TestItem::new(cx)
 9509                .with_dirty(true)
 9510                .with_label("1.txt")
 9511                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9512        });
 9513        let dirty_regular_buffer_2 = cx.new(|cx| {
 9514            TestItem::new(cx)
 9515                .with_dirty(true)
 9516                .with_label("2.txt")
 9517                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9518        });
 9519        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9520            TestItem::new(cx)
 9521                .with_dirty(true)
 9522                .with_singleton(false)
 9523                .with_label("Fake Project Search")
 9524                .with_project_items(&[
 9525                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9526                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9527                ])
 9528        });
 9529        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9530        workspace.update_in(cx, |workspace, window, cx| {
 9531            workspace.add_item(
 9532                pane.clone(),
 9533                Box::new(dirty_regular_buffer.clone()),
 9534                None,
 9535                false,
 9536                false,
 9537                window,
 9538                cx,
 9539            );
 9540            workspace.add_item(
 9541                pane.clone(),
 9542                Box::new(dirty_regular_buffer_2.clone()),
 9543                None,
 9544                false,
 9545                false,
 9546                window,
 9547                cx,
 9548            );
 9549            workspace.add_item(
 9550                pane.clone(),
 9551                Box::new(dirty_multi_buffer_with_both.clone()),
 9552                None,
 9553                false,
 9554                false,
 9555                window,
 9556                cx,
 9557            );
 9558        });
 9559
 9560        pane.update_in(cx, |pane, window, cx| {
 9561            pane.activate_item(2, true, true, window, cx);
 9562            assert_eq!(
 9563                pane.active_item().unwrap().item_id(),
 9564                multi_buffer_with_both_files_id,
 9565                "Should select the multi buffer in the pane"
 9566            );
 9567        });
 9568        let close_all_but_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9569            pane.close_other_items(
 9570                &CloseOtherItems {
 9571                    save_intent: Some(SaveIntent::Save),
 9572                    close_pinned: true,
 9573                },
 9574                None,
 9575                window,
 9576                cx,
 9577            )
 9578        });
 9579        cx.background_executor.run_until_parked();
 9580        assert!(!cx.has_pending_prompt());
 9581        close_all_but_multi_buffer_task
 9582            .await
 9583            .expect("Closing all buffers but the multi buffer failed");
 9584        pane.update(cx, |pane, cx| {
 9585            assert_eq!(dirty_regular_buffer.read(cx).save_count, 1);
 9586            assert_eq!(dirty_multi_buffer_with_both.read(cx).save_count, 0);
 9587            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 1);
 9588            assert_eq!(pane.items_len(), 1);
 9589            assert_eq!(
 9590                pane.active_item().unwrap().item_id(),
 9591                multi_buffer_with_both_files_id,
 9592                "Should have only the multi buffer left in the pane"
 9593            );
 9594            assert!(
 9595                dirty_multi_buffer_with_both.read(cx).is_dirty,
 9596                "The multi buffer containing the unsaved buffer should still be dirty"
 9597            );
 9598        });
 9599
 9600        dirty_regular_buffer.update(cx, |buffer, cx| {
 9601            buffer.project_items[0].update(cx, |pi, _| pi.is_dirty = true)
 9602        });
 9603
 9604        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9605            pane.close_active_item(
 9606                &CloseActiveItem {
 9607                    save_intent: Some(SaveIntent::Close),
 9608                    close_pinned: false,
 9609                },
 9610                window,
 9611                cx,
 9612            )
 9613        });
 9614        cx.background_executor.run_until_parked();
 9615        assert!(
 9616            cx.has_pending_prompt(),
 9617            "Dirty multi buffer should prompt a save dialog"
 9618        );
 9619        cx.simulate_prompt_answer("Save");
 9620        cx.background_executor.run_until_parked();
 9621        close_multi_buffer_task
 9622            .await
 9623            .expect("Closing the multi buffer failed");
 9624        pane.update(cx, |pane, cx| {
 9625            assert_eq!(
 9626                dirty_multi_buffer_with_both.read(cx).save_count,
 9627                1,
 9628                "Multi buffer item should get be saved"
 9629            );
 9630            // Test impl does not save inner items, so we do not assert them
 9631            assert_eq!(
 9632                pane.items_len(),
 9633                0,
 9634                "No more items should be left in the pane"
 9635            );
 9636            assert!(pane.active_item().is_none());
 9637        });
 9638    }
 9639
 9640    #[gpui::test]
 9641    async fn test_save_prompt_when_dirty_multi_buffer_closed_with_some_of_its_dirty_items_not_present_in_the_pane(
 9642        cx: &mut TestAppContext,
 9643    ) {
 9644        init_test(cx);
 9645
 9646        let fs = FakeFs::new(cx.background_executor.clone());
 9647        let project = Project::test(fs, [], cx).await;
 9648        let (workspace, cx) =
 9649            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9650        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9651
 9652        let dirty_regular_buffer = cx.new(|cx| {
 9653            TestItem::new(cx)
 9654                .with_dirty(true)
 9655                .with_label("1.txt")
 9656                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9657        });
 9658        let dirty_regular_buffer_2 = cx.new(|cx| {
 9659            TestItem::new(cx)
 9660                .with_dirty(true)
 9661                .with_label("2.txt")
 9662                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9663        });
 9664        let clear_regular_buffer = cx.new(|cx| {
 9665            TestItem::new(cx)
 9666                .with_label("3.txt")
 9667                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
 9668        });
 9669
 9670        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9671            TestItem::new(cx)
 9672                .with_dirty(true)
 9673                .with_singleton(false)
 9674                .with_label("Fake Project Search")
 9675                .with_project_items(&[
 9676                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9677                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9678                    clear_regular_buffer.read(cx).project_items[0].clone(),
 9679                ])
 9680        });
 9681        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9682        workspace.update_in(cx, |workspace, window, cx| {
 9683            workspace.add_item(
 9684                pane.clone(),
 9685                Box::new(dirty_regular_buffer.clone()),
 9686                None,
 9687                false,
 9688                false,
 9689                window,
 9690                cx,
 9691            );
 9692            workspace.add_item(
 9693                pane.clone(),
 9694                Box::new(dirty_multi_buffer_with_both.clone()),
 9695                None,
 9696                false,
 9697                false,
 9698                window,
 9699                cx,
 9700            );
 9701        });
 9702
 9703        pane.update_in(cx, |pane, window, cx| {
 9704            pane.activate_item(1, true, true, window, cx);
 9705            assert_eq!(
 9706                pane.active_item().unwrap().item_id(),
 9707                multi_buffer_with_both_files_id,
 9708                "Should select the multi buffer in the pane"
 9709            );
 9710        });
 9711        let _close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9712            pane.close_active_item(
 9713                &CloseActiveItem {
 9714                    save_intent: None,
 9715                    close_pinned: false,
 9716                },
 9717                window,
 9718                cx,
 9719            )
 9720        });
 9721        cx.background_executor.run_until_parked();
 9722        assert!(
 9723            cx.has_pending_prompt(),
 9724            "With one dirty item from the multi buffer not being in the pane, a save prompt should be shown"
 9725        );
 9726    }
 9727
 9728    /// Tests that when `close_on_file_delete` is enabled, files are automatically
 9729    /// closed when they are deleted from disk.
 9730    #[gpui::test]
 9731    async fn test_close_on_disk_deletion_enabled(cx: &mut TestAppContext) {
 9732        init_test(cx);
 9733
 9734        // Enable the close_on_disk_deletion setting
 9735        cx.update_global(|store: &mut SettingsStore, cx| {
 9736            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9737                settings.close_on_file_delete = Some(true);
 9738            });
 9739        });
 9740
 9741        let fs = FakeFs::new(cx.background_executor.clone());
 9742        let project = Project::test(fs, [], cx).await;
 9743        let (workspace, cx) =
 9744            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9745        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9746
 9747        // Create a test item that simulates a file
 9748        let item = cx.new(|cx| {
 9749            TestItem::new(cx)
 9750                .with_label("test.txt")
 9751                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9752        });
 9753
 9754        // Add item to workspace
 9755        workspace.update_in(cx, |workspace, window, cx| {
 9756            workspace.add_item(
 9757                pane.clone(),
 9758                Box::new(item.clone()),
 9759                None,
 9760                false,
 9761                false,
 9762                window,
 9763                cx,
 9764            );
 9765        });
 9766
 9767        // Verify the item is in the pane
 9768        pane.read_with(cx, |pane, _| {
 9769            assert_eq!(pane.items().count(), 1);
 9770        });
 9771
 9772        // Simulate file deletion by setting the item's deleted state
 9773        item.update(cx, |item, _| {
 9774            item.set_has_deleted_file(true);
 9775        });
 9776
 9777        // Emit UpdateTab event to trigger the close behavior
 9778        cx.run_until_parked();
 9779        item.update(cx, |_, cx| {
 9780            cx.emit(ItemEvent::UpdateTab);
 9781        });
 9782
 9783        // Allow the close operation to complete
 9784        cx.run_until_parked();
 9785
 9786        // Verify the item was automatically closed
 9787        pane.read_with(cx, |pane, _| {
 9788            assert_eq!(
 9789                pane.items().count(),
 9790                0,
 9791                "Item should be automatically closed when file is deleted"
 9792            );
 9793        });
 9794    }
 9795
 9796    /// Tests that when `close_on_file_delete` is disabled (default), files remain
 9797    /// open with a strikethrough when they are deleted from disk.
 9798    #[gpui::test]
 9799    async fn test_close_on_disk_deletion_disabled(cx: &mut TestAppContext) {
 9800        init_test(cx);
 9801
 9802        // Ensure close_on_disk_deletion is disabled (default)
 9803        cx.update_global(|store: &mut SettingsStore, cx| {
 9804            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9805                settings.close_on_file_delete = Some(false);
 9806            });
 9807        });
 9808
 9809        let fs = FakeFs::new(cx.background_executor.clone());
 9810        let project = Project::test(fs, [], cx).await;
 9811        let (workspace, cx) =
 9812            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9813        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9814
 9815        // Create a test item that simulates a file
 9816        let item = cx.new(|cx| {
 9817            TestItem::new(cx)
 9818                .with_label("test.txt")
 9819                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9820        });
 9821
 9822        // Add item to workspace
 9823        workspace.update_in(cx, |workspace, window, cx| {
 9824            workspace.add_item(
 9825                pane.clone(),
 9826                Box::new(item.clone()),
 9827                None,
 9828                false,
 9829                false,
 9830                window,
 9831                cx,
 9832            );
 9833        });
 9834
 9835        // Verify the item is in the pane
 9836        pane.read_with(cx, |pane, _| {
 9837            assert_eq!(pane.items().count(), 1);
 9838        });
 9839
 9840        // Simulate file deletion
 9841        item.update(cx, |item, _| {
 9842            item.set_has_deleted_file(true);
 9843        });
 9844
 9845        // Emit UpdateTab event
 9846        cx.run_until_parked();
 9847        item.update(cx, |_, cx| {
 9848            cx.emit(ItemEvent::UpdateTab);
 9849        });
 9850
 9851        // Allow any potential close operation to complete
 9852        cx.run_until_parked();
 9853
 9854        // Verify the item remains open (with strikethrough)
 9855        pane.read_with(cx, |pane, _| {
 9856            assert_eq!(
 9857                pane.items().count(),
 9858                1,
 9859                "Item should remain open when close_on_disk_deletion is disabled"
 9860            );
 9861        });
 9862
 9863        // Verify the item shows as deleted
 9864        item.read_with(cx, |item, _| {
 9865            assert!(
 9866                item.has_deleted_file,
 9867                "Item should be marked as having deleted file"
 9868            );
 9869        });
 9870    }
 9871
 9872    /// Tests that dirty files are not automatically closed when deleted from disk,
 9873    /// even when `close_on_file_delete` is enabled. This ensures users don't lose
 9874    /// unsaved changes without being prompted.
 9875    #[gpui::test]
 9876    async fn test_close_on_disk_deletion_with_dirty_file(cx: &mut TestAppContext) {
 9877        init_test(cx);
 9878
 9879        // Enable the close_on_file_delete setting
 9880        cx.update_global(|store: &mut SettingsStore, cx| {
 9881            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9882                settings.close_on_file_delete = Some(true);
 9883            });
 9884        });
 9885
 9886        let fs = FakeFs::new(cx.background_executor.clone());
 9887        let project = Project::test(fs, [], cx).await;
 9888        let (workspace, cx) =
 9889            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9890        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9891
 9892        // Create a dirty test item
 9893        let item = cx.new(|cx| {
 9894            TestItem::new(cx)
 9895                .with_dirty(true)
 9896                .with_label("test.txt")
 9897                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9898        });
 9899
 9900        // Add item to workspace
 9901        workspace.update_in(cx, |workspace, window, cx| {
 9902            workspace.add_item(
 9903                pane.clone(),
 9904                Box::new(item.clone()),
 9905                None,
 9906                false,
 9907                false,
 9908                window,
 9909                cx,
 9910            );
 9911        });
 9912
 9913        // Simulate file deletion
 9914        item.update(cx, |item, _| {
 9915            item.set_has_deleted_file(true);
 9916        });
 9917
 9918        // Emit UpdateTab event to trigger the close behavior
 9919        cx.run_until_parked();
 9920        item.update(cx, |_, cx| {
 9921            cx.emit(ItemEvent::UpdateTab);
 9922        });
 9923
 9924        // Allow any potential close operation to complete
 9925        cx.run_until_parked();
 9926
 9927        // Verify the item remains open (dirty files are not auto-closed)
 9928        pane.read_with(cx, |pane, _| {
 9929            assert_eq!(
 9930                pane.items().count(),
 9931                1,
 9932                "Dirty items should not be automatically closed even when file is deleted"
 9933            );
 9934        });
 9935
 9936        // Verify the item is marked as deleted and still dirty
 9937        item.read_with(cx, |item, _| {
 9938            assert!(
 9939                item.has_deleted_file,
 9940                "Item should be marked as having deleted file"
 9941            );
 9942            assert!(item.is_dirty, "Item should still be dirty");
 9943        });
 9944    }
 9945
 9946    /// Tests that navigation history is cleaned up when files are auto-closed
 9947    /// due to deletion from disk.
 9948    #[gpui::test]
 9949    async fn test_close_on_disk_deletion_cleans_navigation_history(cx: &mut TestAppContext) {
 9950        init_test(cx);
 9951
 9952        // Enable the close_on_file_delete setting
 9953        cx.update_global(|store: &mut SettingsStore, cx| {
 9954            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9955                settings.close_on_file_delete = Some(true);
 9956            });
 9957        });
 9958
 9959        let fs = FakeFs::new(cx.background_executor.clone());
 9960        let project = Project::test(fs, [], cx).await;
 9961        let (workspace, cx) =
 9962            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9963        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9964
 9965        // Create test items
 9966        let item1 = cx.new(|cx| {
 9967            TestItem::new(cx)
 9968                .with_label("test1.txt")
 9969                .with_project_items(&[TestProjectItem::new(1, "test1.txt", cx)])
 9970        });
 9971        let item1_id = item1.item_id();
 9972
 9973        let item2 = cx.new(|cx| {
 9974            TestItem::new(cx)
 9975                .with_label("test2.txt")
 9976                .with_project_items(&[TestProjectItem::new(2, "test2.txt", cx)])
 9977        });
 9978
 9979        // Add items to workspace
 9980        workspace.update_in(cx, |workspace, window, cx| {
 9981            workspace.add_item(
 9982                pane.clone(),
 9983                Box::new(item1.clone()),
 9984                None,
 9985                false,
 9986                false,
 9987                window,
 9988                cx,
 9989            );
 9990            workspace.add_item(
 9991                pane.clone(),
 9992                Box::new(item2.clone()),
 9993                None,
 9994                false,
 9995                false,
 9996                window,
 9997                cx,
 9998            );
 9999        });
10000
10001        // Activate item1 to ensure it gets navigation entries
10002        pane.update_in(cx, |pane, window, cx| {
10003            pane.activate_item(0, true, true, window, cx);
10004        });
10005
10006        // Switch to item2 and back to create navigation history
10007        pane.update_in(cx, |pane, window, cx| {
10008            pane.activate_item(1, true, true, window, cx);
10009        });
10010        cx.run_until_parked();
10011
10012        pane.update_in(cx, |pane, window, cx| {
10013            pane.activate_item(0, true, true, window, cx);
10014        });
10015        cx.run_until_parked();
10016
10017        // Simulate file deletion for item1
10018        item1.update(cx, |item, _| {
10019            item.set_has_deleted_file(true);
10020        });
10021
10022        // Emit UpdateTab event to trigger the close behavior
10023        item1.update(cx, |_, cx| {
10024            cx.emit(ItemEvent::UpdateTab);
10025        });
10026        cx.run_until_parked();
10027
10028        // Verify item1 was closed
10029        pane.read_with(cx, |pane, _| {
10030            assert_eq!(
10031                pane.items().count(),
10032                1,
10033                "Should have 1 item remaining after auto-close"
10034            );
10035        });
10036
10037        // Check navigation history after close
10038        let has_item = pane.read_with(cx, |pane, cx| {
10039            let mut has_item = false;
10040            pane.nav_history().for_each_entry(cx, |entry, _| {
10041                if entry.item.id() == item1_id {
10042                    has_item = true;
10043                }
10044            });
10045            has_item
10046        });
10047
10048        assert!(
10049            !has_item,
10050            "Navigation history should not contain closed item entries"
10051        );
10052    }
10053
10054    #[gpui::test]
10055    async fn test_no_save_prompt_when_dirty_multi_buffer_closed_with_all_of_its_dirty_items_present_in_the_pane(
10056        cx: &mut TestAppContext,
10057    ) {
10058        init_test(cx);
10059
10060        let fs = FakeFs::new(cx.background_executor.clone());
10061        let project = Project::test(fs, [], cx).await;
10062        let (workspace, cx) =
10063            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10064        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10065
10066        let dirty_regular_buffer = cx.new(|cx| {
10067            TestItem::new(cx)
10068                .with_dirty(true)
10069                .with_label("1.txt")
10070                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10071        });
10072        let dirty_regular_buffer_2 = cx.new(|cx| {
10073            TestItem::new(cx)
10074                .with_dirty(true)
10075                .with_label("2.txt")
10076                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10077        });
10078        let clear_regular_buffer = cx.new(|cx| {
10079            TestItem::new(cx)
10080                .with_label("3.txt")
10081                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
10082        });
10083
10084        let dirty_multi_buffer = cx.new(|cx| {
10085            TestItem::new(cx)
10086                .with_dirty(true)
10087                .with_singleton(false)
10088                .with_label("Fake Project Search")
10089                .with_project_items(&[
10090                    dirty_regular_buffer.read(cx).project_items[0].clone(),
10091                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
10092                    clear_regular_buffer.read(cx).project_items[0].clone(),
10093                ])
10094        });
10095        workspace.update_in(cx, |workspace, window, cx| {
10096            workspace.add_item(
10097                pane.clone(),
10098                Box::new(dirty_regular_buffer.clone()),
10099                None,
10100                false,
10101                false,
10102                window,
10103                cx,
10104            );
10105            workspace.add_item(
10106                pane.clone(),
10107                Box::new(dirty_regular_buffer_2.clone()),
10108                None,
10109                false,
10110                false,
10111                window,
10112                cx,
10113            );
10114            workspace.add_item(
10115                pane.clone(),
10116                Box::new(dirty_multi_buffer.clone()),
10117                None,
10118                false,
10119                false,
10120                window,
10121                cx,
10122            );
10123        });
10124
10125        pane.update_in(cx, |pane, window, cx| {
10126            pane.activate_item(2, true, true, window, cx);
10127            assert_eq!(
10128                pane.active_item().unwrap().item_id(),
10129                dirty_multi_buffer.item_id(),
10130                "Should select the multi buffer in the pane"
10131            );
10132        });
10133        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
10134            pane.close_active_item(
10135                &CloseActiveItem {
10136                    save_intent: None,
10137                    close_pinned: false,
10138                },
10139                window,
10140                cx,
10141            )
10142        });
10143        cx.background_executor.run_until_parked();
10144        assert!(
10145            !cx.has_pending_prompt(),
10146            "All dirty items from the multi buffer are in the pane still, no save prompts should be shown"
10147        );
10148        close_multi_buffer_task
10149            .await
10150            .expect("Closing multi buffer failed");
10151        pane.update(cx, |pane, cx| {
10152            assert_eq!(dirty_regular_buffer.read(cx).save_count, 0);
10153            assert_eq!(dirty_multi_buffer.read(cx).save_count, 0);
10154            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 0);
10155            assert_eq!(
10156                pane.items()
10157                    .map(|item| item.item_id())
10158                    .sorted()
10159                    .collect::<Vec<_>>(),
10160                vec![
10161                    dirty_regular_buffer.item_id(),
10162                    dirty_regular_buffer_2.item_id(),
10163                ],
10164                "Should have no multi buffer left in the pane"
10165            );
10166            assert!(dirty_regular_buffer.read(cx).is_dirty);
10167            assert!(dirty_regular_buffer_2.read(cx).is_dirty);
10168        });
10169    }
10170
10171    #[gpui::test]
10172    async fn test_move_focused_panel_to_next_position(cx: &mut gpui::TestAppContext) {
10173        init_test(cx);
10174        let fs = FakeFs::new(cx.executor());
10175        let project = Project::test(fs, [], cx).await;
10176        let (workspace, cx) =
10177            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10178
10179        // Add a new panel to the right dock, opening the dock and setting the
10180        // focus to the new panel.
10181        let panel = workspace.update_in(cx, |workspace, window, cx| {
10182            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
10183            workspace.add_panel(panel.clone(), window, cx);
10184
10185            workspace
10186                .right_dock()
10187                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
10188
10189            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10190
10191            panel
10192        });
10193
10194        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10195        // panel to the next valid position which, in this case, is the left
10196        // dock.
10197        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10198        workspace.update(cx, |workspace, cx| {
10199            assert!(workspace.left_dock().read(cx).is_open());
10200            assert_eq!(panel.read(cx).position, DockPosition::Left);
10201        });
10202
10203        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10204        // panel to the next valid position which, in this case, is the bottom
10205        // dock.
10206        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10207        workspace.update(cx, |workspace, cx| {
10208            assert!(workspace.bottom_dock().read(cx).is_open());
10209            assert_eq!(panel.read(cx).position, DockPosition::Bottom);
10210        });
10211
10212        // Dispatch the `MoveFocusedPanelToNextPosition` action again, this time
10213        // around moving the panel to its initial position, the right dock.
10214        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10215        workspace.update(cx, |workspace, cx| {
10216            assert!(workspace.right_dock().read(cx).is_open());
10217            assert_eq!(panel.read(cx).position, DockPosition::Right);
10218        });
10219
10220        // Remove focus from the panel, ensuring that, if the panel is not
10221        // focused, the `MoveFocusedPanelToNextPosition` action does not update
10222        // the panel's position, so the panel is still in the right dock.
10223        workspace.update_in(cx, |workspace, window, cx| {
10224            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10225        });
10226
10227        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10228        workspace.update(cx, |workspace, cx| {
10229            assert!(workspace.right_dock().read(cx).is_open());
10230            assert_eq!(panel.read(cx).position, DockPosition::Right);
10231        });
10232    }
10233
10234    #[gpui::test]
10235    async fn test_moving_items_create_panes(cx: &mut TestAppContext) {
10236        init_test(cx);
10237
10238        let fs = FakeFs::new(cx.executor());
10239        let project = Project::test(fs, [], cx).await;
10240        let (workspace, cx) =
10241            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10242
10243        let item_1 = cx.new(|cx| {
10244            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10245        });
10246        workspace.update_in(cx, |workspace, window, cx| {
10247            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10248            workspace.move_item_to_pane_in_direction(
10249                &MoveItemToPaneInDirection {
10250                    direction: SplitDirection::Right,
10251                    focus: true,
10252                    clone: false,
10253                },
10254                window,
10255                cx,
10256            );
10257            workspace.move_item_to_pane_at_index(
10258                &MoveItemToPane {
10259                    destination: 3,
10260                    focus: true,
10261                    clone: false,
10262                },
10263                window,
10264                cx,
10265            );
10266
10267            assert_eq!(workspace.panes.len(), 1, "No new panes were created");
10268            assert_eq!(
10269                pane_items_paths(&workspace.active_pane, cx),
10270                vec!["first.txt".to_string()],
10271                "Single item was not moved anywhere"
10272            );
10273        });
10274
10275        let item_2 = cx.new(|cx| {
10276            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "second.txt", cx)])
10277        });
10278        workspace.update_in(cx, |workspace, window, cx| {
10279            workspace.add_item_to_active_pane(Box::new(item_2), None, true, window, cx);
10280            assert_eq!(
10281                pane_items_paths(&workspace.panes[0], cx),
10282                vec!["first.txt".to_string(), "second.txt".to_string()],
10283            );
10284            workspace.move_item_to_pane_in_direction(
10285                &MoveItemToPaneInDirection {
10286                    direction: SplitDirection::Right,
10287                    focus: true,
10288                    clone: false,
10289                },
10290                window,
10291                cx,
10292            );
10293
10294            assert_eq!(workspace.panes.len(), 2, "A new pane should be created");
10295            assert_eq!(
10296                pane_items_paths(&workspace.panes[0], cx),
10297                vec!["first.txt".to_string()],
10298                "After moving, one item should be left in the original pane"
10299            );
10300            assert_eq!(
10301                pane_items_paths(&workspace.panes[1], cx),
10302                vec!["second.txt".to_string()],
10303                "New item should have been moved to the new pane"
10304            );
10305        });
10306
10307        let item_3 = cx.new(|cx| {
10308            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "third.txt", cx)])
10309        });
10310        workspace.update_in(cx, |workspace, window, cx| {
10311            let original_pane = workspace.panes[0].clone();
10312            workspace.set_active_pane(&original_pane, window, cx);
10313            workspace.add_item_to_active_pane(Box::new(item_3), None, true, window, cx);
10314            assert_eq!(workspace.panes.len(), 2, "No new panes were created");
10315            assert_eq!(
10316                pane_items_paths(&workspace.active_pane, cx),
10317                vec!["first.txt".to_string(), "third.txt".to_string()],
10318                "New pane should be ready to move one item out"
10319            );
10320
10321            workspace.move_item_to_pane_at_index(
10322                &MoveItemToPane {
10323                    destination: 3,
10324                    focus: true,
10325                    clone: false,
10326                },
10327                window,
10328                cx,
10329            );
10330            assert_eq!(workspace.panes.len(), 3, "A new pane should be created");
10331            assert_eq!(
10332                pane_items_paths(&workspace.active_pane, cx),
10333                vec!["first.txt".to_string()],
10334                "After moving, one item should be left in the original pane"
10335            );
10336            assert_eq!(
10337                pane_items_paths(&workspace.panes[1], cx),
10338                vec!["second.txt".to_string()],
10339                "Previously created pane should be unchanged"
10340            );
10341            assert_eq!(
10342                pane_items_paths(&workspace.panes[2], cx),
10343                vec!["third.txt".to_string()],
10344                "New item should have been moved to the new pane"
10345            );
10346        });
10347    }
10348
10349    #[gpui::test]
10350    async fn test_moving_items_can_clone_panes(cx: &mut TestAppContext) {
10351        init_test(cx);
10352
10353        let fs = FakeFs::new(cx.executor());
10354        let project = Project::test(fs, [], cx).await;
10355        let (workspace, cx) =
10356            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10357
10358        let item_1 = cx.new(|cx| {
10359            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10360        });
10361        workspace.update_in(cx, |workspace, window, cx| {
10362            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10363            workspace.move_item_to_pane_in_direction(
10364                &MoveItemToPaneInDirection {
10365                    direction: SplitDirection::Right,
10366                    focus: true,
10367                    clone: true,
10368                },
10369                window,
10370                cx,
10371            );
10372            workspace.move_item_to_pane_at_index(
10373                &MoveItemToPane {
10374                    destination: 3,
10375                    focus: true,
10376                    clone: true,
10377                },
10378                window,
10379                cx,
10380            );
10381
10382            assert_eq!(workspace.panes.len(), 3, "Two new panes were created");
10383            for pane in workspace.panes() {
10384                assert_eq!(
10385                    pane_items_paths(pane, cx),
10386                    vec!["first.txt".to_string()],
10387                    "Single item exists in all panes"
10388                );
10389            }
10390        });
10391
10392        // verify that the active pane has been updated after waiting for the
10393        // pane focus event to fire and resolve
10394        workspace.read_with(cx, |workspace, _app| {
10395            assert_eq!(
10396                workspace.active_pane(),
10397                &workspace.panes[2],
10398                "The third pane should be the active one: {:?}",
10399                workspace.panes
10400            );
10401        })
10402    }
10403
10404    mod register_project_item_tests {
10405
10406        use super::*;
10407
10408        // View
10409        struct TestPngItemView {
10410            focus_handle: FocusHandle,
10411        }
10412        // Model
10413        struct TestPngItem {}
10414
10415        impl project::ProjectItem for TestPngItem {
10416            fn try_open(
10417                _project: &Entity<Project>,
10418                path: &ProjectPath,
10419                cx: &mut App,
10420            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10421                if path.path.extension().unwrap() == "png" {
10422                    Some(cx.spawn(async move |cx| cx.new(|_| TestPngItem {})))
10423                } else {
10424                    None
10425                }
10426            }
10427
10428            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10429                None
10430            }
10431
10432            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10433                None
10434            }
10435
10436            fn is_dirty(&self) -> bool {
10437                false
10438            }
10439        }
10440
10441        impl Item for TestPngItemView {
10442            type Event = ();
10443            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10444                "".into()
10445            }
10446        }
10447        impl EventEmitter<()> for TestPngItemView {}
10448        impl Focusable for TestPngItemView {
10449            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10450                self.focus_handle.clone()
10451            }
10452        }
10453
10454        impl Render for TestPngItemView {
10455            fn render(
10456                &mut self,
10457                _window: &mut Window,
10458                _cx: &mut Context<Self>,
10459            ) -> impl IntoElement {
10460                Empty
10461            }
10462        }
10463
10464        impl ProjectItem for TestPngItemView {
10465            type Item = TestPngItem;
10466
10467            fn for_project_item(
10468                _project: Entity<Project>,
10469                _pane: Option<&Pane>,
10470                _item: Entity<Self::Item>,
10471                _: &mut Window,
10472                cx: &mut Context<Self>,
10473            ) -> Self
10474            where
10475                Self: Sized,
10476            {
10477                Self {
10478                    focus_handle: cx.focus_handle(),
10479                }
10480            }
10481        }
10482
10483        // View
10484        struct TestIpynbItemView {
10485            focus_handle: FocusHandle,
10486        }
10487        // Model
10488        struct TestIpynbItem {}
10489
10490        impl project::ProjectItem for TestIpynbItem {
10491            fn try_open(
10492                _project: &Entity<Project>,
10493                path: &ProjectPath,
10494                cx: &mut App,
10495            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10496                if path.path.extension().unwrap() == "ipynb" {
10497                    Some(cx.spawn(async move |cx| cx.new(|_| TestIpynbItem {})))
10498                } else {
10499                    None
10500                }
10501            }
10502
10503            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10504                None
10505            }
10506
10507            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10508                None
10509            }
10510
10511            fn is_dirty(&self) -> bool {
10512                false
10513            }
10514        }
10515
10516        impl Item for TestIpynbItemView {
10517            type Event = ();
10518            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10519                "".into()
10520            }
10521        }
10522        impl EventEmitter<()> for TestIpynbItemView {}
10523        impl Focusable for TestIpynbItemView {
10524            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10525                self.focus_handle.clone()
10526            }
10527        }
10528
10529        impl Render for TestIpynbItemView {
10530            fn render(
10531                &mut self,
10532                _window: &mut Window,
10533                _cx: &mut Context<Self>,
10534            ) -> impl IntoElement {
10535                Empty
10536            }
10537        }
10538
10539        impl ProjectItem for TestIpynbItemView {
10540            type Item = TestIpynbItem;
10541
10542            fn for_project_item(
10543                _project: Entity<Project>,
10544                _pane: Option<&Pane>,
10545                _item: Entity<Self::Item>,
10546                _: &mut Window,
10547                cx: &mut Context<Self>,
10548            ) -> Self
10549            where
10550                Self: Sized,
10551            {
10552                Self {
10553                    focus_handle: cx.focus_handle(),
10554                }
10555            }
10556        }
10557
10558        struct TestAlternatePngItemView {
10559            focus_handle: FocusHandle,
10560        }
10561
10562        impl Item for TestAlternatePngItemView {
10563            type Event = ();
10564            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10565                "".into()
10566            }
10567        }
10568
10569        impl EventEmitter<()> for TestAlternatePngItemView {}
10570        impl Focusable for TestAlternatePngItemView {
10571            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10572                self.focus_handle.clone()
10573            }
10574        }
10575
10576        impl Render for TestAlternatePngItemView {
10577            fn render(
10578                &mut self,
10579                _window: &mut Window,
10580                _cx: &mut Context<Self>,
10581            ) -> impl IntoElement {
10582                Empty
10583            }
10584        }
10585
10586        impl ProjectItem for TestAlternatePngItemView {
10587            type Item = TestPngItem;
10588
10589            fn for_project_item(
10590                _project: Entity<Project>,
10591                _pane: Option<&Pane>,
10592                _item: Entity<Self::Item>,
10593                _: &mut Window,
10594                cx: &mut Context<Self>,
10595            ) -> Self
10596            where
10597                Self: Sized,
10598            {
10599                Self {
10600                    focus_handle: cx.focus_handle(),
10601                }
10602            }
10603        }
10604
10605        #[gpui::test]
10606        async fn test_register_project_item(cx: &mut TestAppContext) {
10607            init_test(cx);
10608
10609            cx.update(|cx| {
10610                register_project_item::<TestPngItemView>(cx);
10611                register_project_item::<TestIpynbItemView>(cx);
10612            });
10613
10614            let fs = FakeFs::new(cx.executor());
10615            fs.insert_tree(
10616                "/root1",
10617                json!({
10618                    "one.png": "BINARYDATAHERE",
10619                    "two.ipynb": "{ totally a notebook }",
10620                    "three.txt": "editing text, sure why not?"
10621                }),
10622            )
10623            .await;
10624
10625            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10626            let (workspace, cx) =
10627                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10628
10629            let worktree_id = project.update(cx, |project, cx| {
10630                project.worktrees(cx).next().unwrap().read(cx).id()
10631            });
10632
10633            let handle = workspace
10634                .update_in(cx, |workspace, window, cx| {
10635                    let project_path = (worktree_id, "one.png");
10636                    workspace.open_path(project_path, None, true, window, cx)
10637                })
10638                .await
10639                .unwrap();
10640
10641            // Now we can check if the handle we got back errored or not
10642            assert_eq!(
10643                handle.to_any().entity_type(),
10644                TypeId::of::<TestPngItemView>()
10645            );
10646
10647            let handle = workspace
10648                .update_in(cx, |workspace, window, cx| {
10649                    let project_path = (worktree_id, "two.ipynb");
10650                    workspace.open_path(project_path, None, true, window, cx)
10651                })
10652                .await
10653                .unwrap();
10654
10655            assert_eq!(
10656                handle.to_any().entity_type(),
10657                TypeId::of::<TestIpynbItemView>()
10658            );
10659
10660            let handle = workspace
10661                .update_in(cx, |workspace, window, cx| {
10662                    let project_path = (worktree_id, "three.txt");
10663                    workspace.open_path(project_path, None, true, window, cx)
10664                })
10665                .await;
10666            assert!(handle.is_err());
10667        }
10668
10669        #[gpui::test]
10670        async fn test_register_project_item_two_enter_one_leaves(cx: &mut TestAppContext) {
10671            init_test(cx);
10672
10673            cx.update(|cx| {
10674                register_project_item::<TestPngItemView>(cx);
10675                register_project_item::<TestAlternatePngItemView>(cx);
10676            });
10677
10678            let fs = FakeFs::new(cx.executor());
10679            fs.insert_tree(
10680                "/root1",
10681                json!({
10682                    "one.png": "BINARYDATAHERE",
10683                    "two.ipynb": "{ totally a notebook }",
10684                    "three.txt": "editing text, sure why not?"
10685                }),
10686            )
10687            .await;
10688            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10689            let (workspace, cx) =
10690                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10691            let worktree_id = project.update(cx, |project, cx| {
10692                project.worktrees(cx).next().unwrap().read(cx).id()
10693            });
10694
10695            let handle = workspace
10696                .update_in(cx, |workspace, window, cx| {
10697                    let project_path = (worktree_id, "one.png");
10698                    workspace.open_path(project_path, None, true, window, cx)
10699                })
10700                .await
10701                .unwrap();
10702
10703            // This _must_ be the second item registered
10704            assert_eq!(
10705                handle.to_any().entity_type(),
10706                TypeId::of::<TestAlternatePngItemView>()
10707            );
10708
10709            let handle = workspace
10710                .update_in(cx, |workspace, window, cx| {
10711                    let project_path = (worktree_id, "three.txt");
10712                    workspace.open_path(project_path, None, true, window, cx)
10713                })
10714                .await;
10715            assert!(handle.is_err());
10716        }
10717    }
10718
10719    fn pane_items_paths(pane: &Entity<Pane>, cx: &App) -> Vec<String> {
10720        pane.read(cx)
10721            .items()
10722            .flat_map(|item| {
10723                item.project_paths(cx)
10724                    .into_iter()
10725                    .map(|path| path.path.to_string_lossy().to_string())
10726            })
10727            .collect()
10728    }
10729
10730    pub fn init_test(cx: &mut TestAppContext) {
10731        cx.update(|cx| {
10732            let settings_store = SettingsStore::test(cx);
10733            cx.set_global(settings_store);
10734            theme::init(theme::LoadThemes::JustBase, cx);
10735            language::init(cx);
10736            crate::init_settings(cx);
10737            Project::init_settings(cx);
10738        });
10739    }
10740
10741    fn dirty_project_item(id: u64, path: &str, cx: &mut App) -> Entity<TestProjectItem> {
10742        let item = TestProjectItem::new(id, path, cx);
10743        item.update(cx, |item, _| {
10744            item.is_dirty = true;
10745        });
10746        item
10747    }
10748}