workspace.rs

    1pub mod dock;
    2pub mod history_manager;
    3pub mod item;
    4mod modal_layer;
    5pub mod notifications;
    6pub mod pane;
    7pub mod pane_group;
    8mod persistence;
    9pub mod searchable;
   10pub mod shared_screen;
   11mod status_bar;
   12pub mod tasks;
   13mod theme_preview;
   14mod toast_layer;
   15mod toolbar;
   16mod workspace_settings;
   17
   18pub use crate::notifications::NotificationFrame;
   19pub use dock::Panel;
   20pub use toast_layer::{ToastAction, ToastLayer, ToastView};
   21
   22use anyhow::{Context as _, Result, anyhow};
   23use call::{ActiveCall, call_settings::CallSettings};
   24use client::{
   25    ChannelId, Client, ErrorExt, Status, TypedEnvelope, UserStore,
   26    proto::{self, ErrorCode, PanelId, PeerId},
   27};
   28use collections::{HashMap, HashSet, hash_map};
   29use dock::{Dock, DockPosition, PanelButtons, PanelHandle, RESIZE_HANDLE_SIZE};
   30use futures::{
   31    Future, FutureExt, StreamExt,
   32    channel::{
   33        mpsc::{self, UnboundedReceiver, UnboundedSender},
   34        oneshot,
   35    },
   36    future::{Shared, try_join_all},
   37};
   38use gpui::{
   39    Action, AnyEntity, AnyView, AnyWeakView, App, AsyncApp, AsyncWindowContext, Bounds, Context,
   40    CursorStyle, Decorations, DragMoveEvent, Entity, EntityId, EventEmitter, FocusHandle,
   41    Focusable, Global, HitboxBehavior, Hsla, KeyContext, Keystroke, ManagedView, MouseButton,
   42    PathPromptOptions, Point, PromptLevel, Render, ResizeEdge, Size, Stateful, Subscription, Task,
   43    Tiling, WeakEntity, WindowBounds, WindowHandle, WindowId, WindowOptions, actions, canvas,
   44    point, relative, size, transparent_black,
   45};
   46pub use history_manager::*;
   47pub use item::{
   48    FollowableItem, FollowableItemHandle, Item, ItemHandle, ItemSettings, PreviewTabsSettings,
   49    ProjectItem, SerializableItem, SerializableItemHandle, WeakItemHandle,
   50};
   51use itertools::Itertools;
   52use language::{
   53    Buffer, LanguageRegistry, Rope,
   54    language_settings::{AllLanguageSettings, all_language_settings},
   55};
   56pub use modal_layer::*;
   57use node_runtime::NodeRuntime;
   58use notifications::{
   59    DetachAndPromptErr, Notifications, dismiss_app_notification,
   60    simple_message_notification::MessageNotification,
   61};
   62pub use pane::*;
   63pub use pane_group::*;
   64use persistence::{
   65    DB, SerializedWindowBounds,
   66    model::{SerializedSshProject, SerializedWorkspace},
   67};
   68pub use persistence::{
   69    DB as WORKSPACE_DB, WorkspaceDb, delete_unloaded_items,
   70    model::{ItemId, LocalPaths, SerializedWorkspaceLocation},
   71};
   72use postage::stream::Stream;
   73use project::{
   74    DirectoryLister, Project, ProjectEntryId, ProjectPath, ResolvedPath, Worktree, WorktreeId,
   75    debugger::{breakpoint_store::BreakpointStoreEvent, session::ThreadStatus},
   76};
   77use remote::{SshClientDelegate, SshConnectionOptions, ssh_session::ConnectionIdentifier};
   78use schemars::JsonSchema;
   79use serde::Deserialize;
   80use session::AppSession;
   81use settings::{Settings, update_settings_file};
   82use shared_screen::SharedScreen;
   83use sqlez::{
   84    bindable::{Bind, Column, StaticColumnCount},
   85    statement::Statement,
   86};
   87use status_bar::StatusBar;
   88pub use status_bar::StatusItemView;
   89use std::{
   90    any::TypeId,
   91    borrow::Cow,
   92    cell::RefCell,
   93    cmp,
   94    collections::{VecDeque, hash_map::DefaultHasher},
   95    env,
   96    hash::{Hash, Hasher},
   97    path::{Path, PathBuf},
   98    process::ExitStatus,
   99    rc::Rc,
  100    sync::{Arc, LazyLock, Weak, atomic::AtomicUsize},
  101    time::Duration,
  102};
  103use task::{DebugScenario, SpawnInTerminal, TaskContext};
  104use theme::{ActiveTheme, SystemAppearance, ThemeSettings};
  105pub use toolbar::{Toolbar, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView};
  106pub use ui;
  107use ui::{Window, prelude::*};
  108use util::{ResultExt, TryFutureExt, paths::SanitizedPath, serde::default_true};
  109use uuid::Uuid;
  110pub use workspace_settings::{
  111    AutosaveSetting, BottomDockLayout, RestoreOnStartupBehavior, TabBarSettings, WorkspaceSettings,
  112};
  113use zed_actions::{Spawn, feedback::FileBugReport};
  114
  115use crate::notifications::NotificationId;
  116use crate::persistence::{
  117    SerializedAxis,
  118    model::{DockData, DockStructure, SerializedItem, SerializedPane, SerializedPaneGroup},
  119};
  120
  121pub const SERIALIZATION_THROTTLE_TIME: Duration = Duration::from_millis(200);
  122
  123static ZED_WINDOW_SIZE: LazyLock<Option<Size<Pixels>>> = LazyLock::new(|| {
  124    env::var("ZED_WINDOW_SIZE")
  125        .ok()
  126        .as_deref()
  127        .and_then(parse_pixel_size_env_var)
  128});
  129
  130static ZED_WINDOW_POSITION: LazyLock<Option<Point<Pixels>>> = LazyLock::new(|| {
  131    env::var("ZED_WINDOW_POSITION")
  132        .ok()
  133        .as_deref()
  134        .and_then(parse_pixel_position_env_var)
  135});
  136
  137pub trait TerminalProvider {
  138    fn spawn(
  139        &self,
  140        task: SpawnInTerminal,
  141        window: &mut Window,
  142        cx: &mut App,
  143    ) -> Task<Option<Result<ExitStatus>>>;
  144}
  145
  146pub trait DebuggerProvider {
  147    // `active_buffer` is used to resolve build task's name against language-specific tasks.
  148    fn start_session(
  149        &self,
  150        definition: DebugScenario,
  151        task_context: TaskContext,
  152        active_buffer: Option<Entity<Buffer>>,
  153        worktree_id: Option<WorktreeId>,
  154        window: &mut Window,
  155        cx: &mut App,
  156    );
  157
  158    fn spawn_task_or_modal(
  159        &self,
  160        workspace: &mut Workspace,
  161        action: &Spawn,
  162        window: &mut Window,
  163        cx: &mut Context<Workspace>,
  164    );
  165
  166    fn task_scheduled(&self, cx: &mut App);
  167    fn debug_scenario_scheduled(&self, cx: &mut App);
  168    fn debug_scenario_scheduled_last(&self, cx: &App) -> bool;
  169
  170    fn active_thread_state(&self, cx: &App) -> Option<ThreadStatus>;
  171}
  172
  173actions!(
  174    workspace,
  175    [
  176        /// Activates the next pane in the workspace.
  177        ActivateNextPane,
  178        /// Activates the previous pane in the workspace.
  179        ActivatePreviousPane,
  180        /// Switches to the next window.
  181        ActivateNextWindow,
  182        /// Switches to the previous window.
  183        ActivatePreviousWindow,
  184        /// Adds a folder to the current project.
  185        AddFolderToProject,
  186        /// Clears all notifications.
  187        ClearAllNotifications,
  188        /// Closes the active dock.
  189        CloseActiveDock,
  190        /// Closes all docks.
  191        CloseAllDocks,
  192        /// Closes the current window.
  193        CloseWindow,
  194        /// Opens the feedback dialog.
  195        Feedback,
  196        /// Follows the next collaborator in the session.
  197        FollowNextCollaborator,
  198        /// Moves the focused panel to the next position.
  199        MoveFocusedPanelToNextPosition,
  200        /// Opens a new terminal in the center.
  201        NewCenterTerminal,
  202        /// Creates a new file.
  203        NewFile,
  204        /// Creates a new file in a vertical split.
  205        NewFileSplitVertical,
  206        /// Creates a new file in a horizontal split.
  207        NewFileSplitHorizontal,
  208        /// Opens a new search.
  209        NewSearch,
  210        /// Opens a new terminal.
  211        NewTerminal,
  212        /// Opens a new window.
  213        NewWindow,
  214        /// Opens a file or directory.
  215        Open,
  216        /// Opens multiple files.
  217        OpenFiles,
  218        /// Opens the current location in terminal.
  219        OpenInTerminal,
  220        /// Opens the component preview.
  221        OpenComponentPreview,
  222        /// Reloads the active item.
  223        ReloadActiveItem,
  224        /// Resets the active dock to its default size.
  225        ResetActiveDockSize,
  226        /// Resets all open docks to their default sizes.
  227        ResetOpenDocksSize,
  228        /// Reloads the application
  229        Reload,
  230        /// Saves the current file with a new name.
  231        SaveAs,
  232        /// Saves without formatting.
  233        SaveWithoutFormat,
  234        /// Shuts down all debug adapters.
  235        ShutdownDebugAdapters,
  236        /// Suppresses the current notification.
  237        SuppressNotification,
  238        /// Toggles the bottom dock.
  239        ToggleBottomDock,
  240        /// Toggles centered layout mode.
  241        ToggleCenteredLayout,
  242        /// Toggles edit prediction feature globally for all files.
  243        ToggleEditPrediction,
  244        /// Toggles the left dock.
  245        ToggleLeftDock,
  246        /// Toggles the right dock.
  247        ToggleRightDock,
  248        /// Toggles zoom on the active pane.
  249        ToggleZoom,
  250        /// Stops following a collaborator.
  251        Unfollow,
  252        /// Restores the banner.
  253        RestoreBanner,
  254        /// Toggles expansion of the selected item.
  255        ToggleExpandItem,
  256    ]
  257);
  258
  259#[derive(Clone, PartialEq)]
  260pub struct OpenPaths {
  261    pub paths: Vec<PathBuf>,
  262}
  263
  264/// Activates a specific pane by its index.
  265#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  266#[action(namespace = workspace)]
  267pub struct ActivatePane(pub usize);
  268
  269/// Moves an item to a specific pane by index.
  270#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  271#[action(namespace = workspace)]
  272#[serde(deny_unknown_fields)]
  273pub struct MoveItemToPane {
  274    #[serde(default = "default_1")]
  275    pub destination: usize,
  276    #[serde(default = "default_true")]
  277    pub focus: bool,
  278    #[serde(default)]
  279    pub clone: bool,
  280}
  281
  282fn default_1() -> usize {
  283    1
  284}
  285
  286/// Moves an item to a pane in the specified direction.
  287#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  288#[action(namespace = workspace)]
  289#[serde(deny_unknown_fields)]
  290pub struct MoveItemToPaneInDirection {
  291    #[serde(default = "default_right")]
  292    pub direction: SplitDirection,
  293    #[serde(default = "default_true")]
  294    pub focus: bool,
  295    #[serde(default)]
  296    pub clone: bool,
  297}
  298
  299fn default_right() -> SplitDirection {
  300    SplitDirection::Right
  301}
  302
  303/// Saves all open files in the workspace.
  304#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  305#[action(namespace = workspace)]
  306#[serde(deny_unknown_fields)]
  307pub struct SaveAll {
  308    #[serde(default)]
  309    pub save_intent: Option<SaveIntent>,
  310}
  311
  312/// Saves the current file with the specified options.
  313#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  314#[action(namespace = workspace)]
  315#[serde(deny_unknown_fields)]
  316pub struct Save {
  317    #[serde(default)]
  318    pub save_intent: Option<SaveIntent>,
  319}
  320
  321/// Closes all items and panes in the workspace.
  322#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  323#[action(namespace = workspace)]
  324#[serde(deny_unknown_fields)]
  325pub struct CloseAllItemsAndPanes {
  326    #[serde(default)]
  327    pub save_intent: Option<SaveIntent>,
  328}
  329
  330/// Closes all inactive tabs and panes in the workspace.
  331#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  332#[action(namespace = workspace)]
  333#[serde(deny_unknown_fields)]
  334pub struct CloseInactiveTabsAndPanes {
  335    #[serde(default)]
  336    pub save_intent: Option<SaveIntent>,
  337}
  338
  339/// Sends a sequence of keystrokes to the active element.
  340#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  341#[action(namespace = workspace)]
  342pub struct SendKeystrokes(pub String);
  343
  344actions!(
  345    project_symbols,
  346    [
  347        /// Toggles the project symbols search.
  348        #[action(name = "Toggle")]
  349        ToggleProjectSymbols
  350    ]
  351);
  352
  353/// Toggles the file finder interface.
  354#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  355#[action(namespace = file_finder, name = "Toggle")]
  356#[serde(deny_unknown_fields)]
  357pub struct ToggleFileFinder {
  358    #[serde(default)]
  359    pub separate_history: bool,
  360}
  361
  362/// Increases size of a currently focused dock by a given amount of pixels.
  363#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  364#[action(namespace = workspace)]
  365#[serde(deny_unknown_fields)]
  366pub struct IncreaseActiveDockSize {
  367    /// For 0px parameter, uses UI font size value.
  368    #[serde(default)]
  369    pub px: u32,
  370}
  371
  372/// Decreases size of a currently focused dock by a given amount of pixels.
  373#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  374#[action(namespace = workspace)]
  375#[serde(deny_unknown_fields)]
  376pub struct DecreaseActiveDockSize {
  377    /// For 0px parameter, uses UI font size value.
  378    #[serde(default)]
  379    pub px: u32,
  380}
  381
  382/// Increases size of all currently visible docks uniformly, by a given amount of pixels.
  383#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  384#[action(namespace = workspace)]
  385#[serde(deny_unknown_fields)]
  386pub struct IncreaseOpenDocksSize {
  387    /// For 0px parameter, uses UI font size value.
  388    #[serde(default)]
  389    pub px: u32,
  390}
  391
  392/// Decreases size of all currently visible docks uniformly, by a given amount of pixels.
  393#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  394#[action(namespace = workspace)]
  395#[serde(deny_unknown_fields)]
  396pub struct DecreaseOpenDocksSize {
  397    /// For 0px parameter, uses UI font size value.
  398    #[serde(default)]
  399    pub px: u32,
  400}
  401
  402actions!(
  403    workspace,
  404    [
  405        /// Activates the pane to the left.
  406        ActivatePaneLeft,
  407        /// Activates the pane to the right.
  408        ActivatePaneRight,
  409        /// Activates the pane above.
  410        ActivatePaneUp,
  411        /// Activates the pane below.
  412        ActivatePaneDown,
  413        /// Swaps the current pane with the one to the left.
  414        SwapPaneLeft,
  415        /// Swaps the current pane with the one to the right.
  416        SwapPaneRight,
  417        /// Swaps the current pane with the one above.
  418        SwapPaneUp,
  419        /// Swaps the current pane with the one below.
  420        SwapPaneDown,
  421    ]
  422);
  423
  424#[derive(PartialEq, Eq, Debug)]
  425pub enum CloseIntent {
  426    /// Quit the program entirely.
  427    Quit,
  428    /// Close a window.
  429    CloseWindow,
  430    /// Replace the workspace in an existing window.
  431    ReplaceWindow,
  432}
  433
  434#[derive(Clone)]
  435pub struct Toast {
  436    id: NotificationId,
  437    msg: Cow<'static, str>,
  438    autohide: bool,
  439    on_click: Option<(Cow<'static, str>, Arc<dyn Fn(&mut Window, &mut App)>)>,
  440}
  441
  442impl Toast {
  443    pub fn new<I: Into<Cow<'static, str>>>(id: NotificationId, msg: I) -> Self {
  444        Toast {
  445            id,
  446            msg: msg.into(),
  447            on_click: None,
  448            autohide: false,
  449        }
  450    }
  451
  452    pub fn on_click<F, M>(mut self, message: M, on_click: F) -> Self
  453    where
  454        M: Into<Cow<'static, str>>,
  455        F: Fn(&mut Window, &mut App) + 'static,
  456    {
  457        self.on_click = Some((message.into(), Arc::new(on_click)));
  458        self
  459    }
  460
  461    pub fn autohide(mut self) -> Self {
  462        self.autohide = true;
  463        self
  464    }
  465}
  466
  467impl PartialEq for Toast {
  468    fn eq(&self, other: &Self) -> bool {
  469        self.id == other.id
  470            && self.msg == other.msg
  471            && self.on_click.is_some() == other.on_click.is_some()
  472    }
  473}
  474
  475/// Opens a new terminal with the specified working directory.
  476#[derive(Debug, Default, Clone, Deserialize, PartialEq, JsonSchema, Action)]
  477#[action(namespace = workspace)]
  478#[serde(deny_unknown_fields)]
  479pub struct OpenTerminal {
  480    pub working_directory: PathBuf,
  481}
  482
  483#[derive(Clone, Copy, Debug, Default, Hash, PartialEq, Eq, PartialOrd, Ord)]
  484pub struct WorkspaceId(i64);
  485
  486impl StaticColumnCount for WorkspaceId {}
  487impl Bind for WorkspaceId {
  488    fn bind(&self, statement: &Statement, start_index: i32) -> Result<i32> {
  489        self.0.bind(statement, start_index)
  490    }
  491}
  492impl Column for WorkspaceId {
  493    fn column(statement: &mut Statement, start_index: i32) -> Result<(Self, i32)> {
  494        i64::column(statement, start_index)
  495            .map(|(i, next_index)| (Self(i), next_index))
  496            .with_context(|| format!("Failed to read WorkspaceId at index {start_index}"))
  497    }
  498}
  499impl From<WorkspaceId> for i64 {
  500    fn from(val: WorkspaceId) -> Self {
  501        val.0
  502    }
  503}
  504
  505pub fn init_settings(cx: &mut App) {
  506    WorkspaceSettings::register(cx);
  507    ItemSettings::register(cx);
  508    PreviewTabsSettings::register(cx);
  509    TabBarSettings::register(cx);
  510}
  511
  512fn prompt_and_open_paths(app_state: Arc<AppState>, options: PathPromptOptions, cx: &mut App) {
  513    let paths = cx.prompt_for_paths(options);
  514    cx.spawn(
  515        async move |cx| match paths.await.anyhow().and_then(|res| res) {
  516            Ok(Some(paths)) => {
  517                cx.update(|cx| {
  518                    open_paths(&paths, app_state, OpenOptions::default(), cx).detach_and_log_err(cx)
  519                })
  520                .ok();
  521            }
  522            Ok(None) => {}
  523            Err(err) => {
  524                util::log_err(&err);
  525                cx.update(|cx| {
  526                    if let Some(workspace_window) = cx
  527                        .active_window()
  528                        .and_then(|window| window.downcast::<Workspace>())
  529                    {
  530                        workspace_window
  531                            .update(cx, |workspace, _, cx| {
  532                                workspace.show_portal_error(err.to_string(), cx);
  533                            })
  534                            .ok();
  535                    }
  536                })
  537                .ok();
  538            }
  539        },
  540    )
  541    .detach();
  542}
  543
  544pub fn init(app_state: Arc<AppState>, cx: &mut App) {
  545    init_settings(cx);
  546    component::init();
  547    theme_preview::init(cx);
  548    toast_layer::init(cx);
  549    history_manager::init(cx);
  550
  551    cx.on_action(|_: &CloseWindow, cx| Workspace::close_global(cx));
  552    cx.on_action(|_: &Reload, cx| reload(cx));
  553
  554    cx.on_action({
  555        let app_state = Arc::downgrade(&app_state);
  556        move |_: &Open, cx: &mut App| {
  557            if let Some(app_state) = app_state.upgrade() {
  558                prompt_and_open_paths(
  559                    app_state,
  560                    PathPromptOptions {
  561                        files: true,
  562                        directories: true,
  563                        multiple: true,
  564                    },
  565                    cx,
  566                );
  567            }
  568        }
  569    });
  570    cx.on_action({
  571        let app_state = Arc::downgrade(&app_state);
  572        move |_: &OpenFiles, cx: &mut App| {
  573            let directories = cx.can_select_mixed_files_and_dirs();
  574            if let Some(app_state) = app_state.upgrade() {
  575                prompt_and_open_paths(
  576                    app_state,
  577                    PathPromptOptions {
  578                        files: true,
  579                        directories,
  580                        multiple: true,
  581                    },
  582                    cx,
  583                );
  584            }
  585        }
  586    });
  587}
  588
  589type BuildProjectItemFn =
  590    fn(AnyEntity, Entity<Project>, Option<&Pane>, &mut Window, &mut App) -> Box<dyn ItemHandle>;
  591
  592type BuildProjectItemForPathFn =
  593    fn(
  594        &Entity<Project>,
  595        &ProjectPath,
  596        &mut Window,
  597        &mut App,
  598    ) -> Option<Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>>>;
  599
  600#[derive(Clone, Default)]
  601struct ProjectItemRegistry {
  602    build_project_item_fns_by_type: HashMap<TypeId, BuildProjectItemFn>,
  603    build_project_item_for_path_fns: Vec<BuildProjectItemForPathFn>,
  604}
  605
  606impl ProjectItemRegistry {
  607    fn register<T: ProjectItem>(&mut self) {
  608        self.build_project_item_fns_by_type.insert(
  609            TypeId::of::<T::Item>(),
  610            |item, project, pane, window, cx| {
  611                let item = item.downcast().unwrap();
  612                Box::new(cx.new(|cx| T::for_project_item(project, pane, item, window, cx)))
  613                    as Box<dyn ItemHandle>
  614            },
  615        );
  616        self.build_project_item_for_path_fns
  617            .push(|project, project_path, window, cx| {
  618                let project_item =
  619                    <T::Item as project::ProjectItem>::try_open(project, project_path, cx)?;
  620                let project = project.clone();
  621                Some(window.spawn(cx, async move |cx| {
  622                    let project_item = project_item.await?;
  623                    let project_entry_id: Option<ProjectEntryId> =
  624                        project_item.read_with(cx, project::ProjectItem::entry_id)?;
  625                    let build_workspace_item = Box::new(
  626                        |pane: &mut Pane, window: &mut Window, cx: &mut Context<Pane>| {
  627                            Box::new(cx.new(|cx| {
  628                                T::for_project_item(project, Some(pane), project_item, window, cx)
  629                            })) as Box<dyn ItemHandle>
  630                        },
  631                    ) as Box<_>;
  632                    Ok((project_entry_id, build_workspace_item))
  633                }))
  634            });
  635    }
  636
  637    fn open_path(
  638        &self,
  639        project: &Entity<Project>,
  640        path: &ProjectPath,
  641        window: &mut Window,
  642        cx: &mut App,
  643    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
  644        let Some(open_project_item) = self
  645            .build_project_item_for_path_fns
  646            .iter()
  647            .rev()
  648            .find_map(|open_project_item| open_project_item(&project, &path, window, cx))
  649        else {
  650            return Task::ready(Err(anyhow!("cannot open file {:?}", path.path)));
  651        };
  652        open_project_item
  653    }
  654
  655    fn build_item<T: project::ProjectItem>(
  656        &self,
  657        item: Entity<T>,
  658        project: Entity<Project>,
  659        pane: Option<&Pane>,
  660        window: &mut Window,
  661        cx: &mut App,
  662    ) -> Option<Box<dyn ItemHandle>> {
  663        let build = self
  664            .build_project_item_fns_by_type
  665            .get(&TypeId::of::<T>())?;
  666        Some(build(item.into_any(), project, pane, window, cx))
  667    }
  668}
  669
  670type WorkspaceItemBuilder =
  671    Box<dyn FnOnce(&mut Pane, &mut Window, &mut Context<Pane>) -> Box<dyn ItemHandle>>;
  672
  673impl Global for ProjectItemRegistry {}
  674
  675/// Registers a [ProjectItem] for the app. When opening a file, all the registered
  676/// items will get a chance to open the file, starting from the project item that
  677/// was added last.
  678pub fn register_project_item<I: ProjectItem>(cx: &mut App) {
  679    cx.default_global::<ProjectItemRegistry>().register::<I>();
  680}
  681
  682#[derive(Default)]
  683pub struct FollowableViewRegistry(HashMap<TypeId, FollowableViewDescriptor>);
  684
  685struct FollowableViewDescriptor {
  686    from_state_proto: fn(
  687        Entity<Workspace>,
  688        ViewId,
  689        &mut Option<proto::view::Variant>,
  690        &mut Window,
  691        &mut App,
  692    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>>,
  693    to_followable_view: fn(&AnyView) -> Box<dyn FollowableItemHandle>,
  694}
  695
  696impl Global for FollowableViewRegistry {}
  697
  698impl FollowableViewRegistry {
  699    pub fn register<I: FollowableItem>(cx: &mut App) {
  700        cx.default_global::<Self>().0.insert(
  701            TypeId::of::<I>(),
  702            FollowableViewDescriptor {
  703                from_state_proto: |workspace, id, state, window, cx| {
  704                    I::from_state_proto(workspace, id, state, window, cx).map(|task| {
  705                        cx.foreground_executor()
  706                            .spawn(async move { Ok(Box::new(task.await?) as Box<_>) })
  707                    })
  708                },
  709                to_followable_view: |view| Box::new(view.clone().downcast::<I>().unwrap()),
  710            },
  711        );
  712    }
  713
  714    pub fn from_state_proto(
  715        workspace: Entity<Workspace>,
  716        view_id: ViewId,
  717        mut state: Option<proto::view::Variant>,
  718        window: &mut Window,
  719        cx: &mut App,
  720    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>> {
  721        cx.update_default_global(|this: &mut Self, cx| {
  722            this.0.values().find_map(|descriptor| {
  723                (descriptor.from_state_proto)(workspace.clone(), view_id, &mut state, window, cx)
  724            })
  725        })
  726    }
  727
  728    pub fn to_followable_view(
  729        view: impl Into<AnyView>,
  730        cx: &App,
  731    ) -> Option<Box<dyn FollowableItemHandle>> {
  732        let this = cx.try_global::<Self>()?;
  733        let view = view.into();
  734        let descriptor = this.0.get(&view.entity_type())?;
  735        Some((descriptor.to_followable_view)(&view))
  736    }
  737}
  738
  739#[derive(Copy, Clone)]
  740struct SerializableItemDescriptor {
  741    deserialize: fn(
  742        Entity<Project>,
  743        WeakEntity<Workspace>,
  744        WorkspaceId,
  745        ItemId,
  746        &mut Window,
  747        &mut Context<Pane>,
  748    ) -> Task<Result<Box<dyn ItemHandle>>>,
  749    cleanup: fn(WorkspaceId, Vec<ItemId>, &mut Window, &mut App) -> Task<Result<()>>,
  750    view_to_serializable_item: fn(AnyView) -> Box<dyn SerializableItemHandle>,
  751}
  752
  753#[derive(Default)]
  754struct SerializableItemRegistry {
  755    descriptors_by_kind: HashMap<Arc<str>, SerializableItemDescriptor>,
  756    descriptors_by_type: HashMap<TypeId, SerializableItemDescriptor>,
  757}
  758
  759impl Global for SerializableItemRegistry {}
  760
  761impl SerializableItemRegistry {
  762    fn deserialize(
  763        item_kind: &str,
  764        project: Entity<Project>,
  765        workspace: WeakEntity<Workspace>,
  766        workspace_id: WorkspaceId,
  767        item_item: ItemId,
  768        window: &mut Window,
  769        cx: &mut Context<Pane>,
  770    ) -> Task<Result<Box<dyn ItemHandle>>> {
  771        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  772            return Task::ready(Err(anyhow!(
  773                "cannot deserialize {}, descriptor not found",
  774                item_kind
  775            )));
  776        };
  777
  778        (descriptor.deserialize)(project, workspace, workspace_id, item_item, window, cx)
  779    }
  780
  781    fn cleanup(
  782        item_kind: &str,
  783        workspace_id: WorkspaceId,
  784        loaded_items: Vec<ItemId>,
  785        window: &mut Window,
  786        cx: &mut App,
  787    ) -> Task<Result<()>> {
  788        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  789            return Task::ready(Err(anyhow!(
  790                "cannot cleanup {}, descriptor not found",
  791                item_kind
  792            )));
  793        };
  794
  795        (descriptor.cleanup)(workspace_id, loaded_items, window, cx)
  796    }
  797
  798    fn view_to_serializable_item_handle(
  799        view: AnyView,
  800        cx: &App,
  801    ) -> Option<Box<dyn SerializableItemHandle>> {
  802        let this = cx.try_global::<Self>()?;
  803        let descriptor = this.descriptors_by_type.get(&view.entity_type())?;
  804        Some((descriptor.view_to_serializable_item)(view))
  805    }
  806
  807    fn descriptor(item_kind: &str, cx: &App) -> Option<SerializableItemDescriptor> {
  808        let this = cx.try_global::<Self>()?;
  809        this.descriptors_by_kind.get(item_kind).copied()
  810    }
  811}
  812
  813pub fn register_serializable_item<I: SerializableItem>(cx: &mut App) {
  814    let serialized_item_kind = I::serialized_item_kind();
  815
  816    let registry = cx.default_global::<SerializableItemRegistry>();
  817    let descriptor = SerializableItemDescriptor {
  818        deserialize: |project, workspace, workspace_id, item_id, window, cx| {
  819            let task = I::deserialize(project, workspace, workspace_id, item_id, window, cx);
  820            cx.foreground_executor()
  821                .spawn(async { Ok(Box::new(task.await?) as Box<_>) })
  822        },
  823        cleanup: |workspace_id, loaded_items, window, cx| {
  824            I::cleanup(workspace_id, loaded_items, window, cx)
  825        },
  826        view_to_serializable_item: |view| Box::new(view.downcast::<I>().unwrap()),
  827    };
  828    registry
  829        .descriptors_by_kind
  830        .insert(Arc::from(serialized_item_kind), descriptor);
  831    registry
  832        .descriptors_by_type
  833        .insert(TypeId::of::<I>(), descriptor);
  834}
  835
  836pub struct AppState {
  837    pub languages: Arc<LanguageRegistry>,
  838    pub client: Arc<Client>,
  839    pub user_store: Entity<UserStore>,
  840    pub workspace_store: Entity<WorkspaceStore>,
  841    pub fs: Arc<dyn fs::Fs>,
  842    pub build_window_options: fn(Option<Uuid>, &mut App) -> WindowOptions,
  843    pub node_runtime: NodeRuntime,
  844    pub session: Entity<AppSession>,
  845}
  846
  847struct GlobalAppState(Weak<AppState>);
  848
  849impl Global for GlobalAppState {}
  850
  851pub struct WorkspaceStore {
  852    workspaces: HashSet<WindowHandle<Workspace>>,
  853    client: Arc<Client>,
  854    _subscriptions: Vec<client::Subscription>,
  855}
  856
  857#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq, PartialOrd, Ord)]
  858pub enum CollaboratorId {
  859    PeerId(PeerId),
  860    Agent,
  861}
  862
  863impl From<PeerId> for CollaboratorId {
  864    fn from(peer_id: PeerId) -> Self {
  865        CollaboratorId::PeerId(peer_id)
  866    }
  867}
  868
  869impl From<&PeerId> for CollaboratorId {
  870    fn from(peer_id: &PeerId) -> Self {
  871        CollaboratorId::PeerId(*peer_id)
  872    }
  873}
  874
  875#[derive(PartialEq, Eq, PartialOrd, Ord, Debug)]
  876struct Follower {
  877    project_id: Option<u64>,
  878    peer_id: PeerId,
  879}
  880
  881impl AppState {
  882    #[track_caller]
  883    pub fn global(cx: &App) -> Weak<Self> {
  884        cx.global::<GlobalAppState>().0.clone()
  885    }
  886    pub fn try_global(cx: &App) -> Option<Weak<Self>> {
  887        cx.try_global::<GlobalAppState>()
  888            .map(|state| state.0.clone())
  889    }
  890    pub fn set_global(state: Weak<AppState>, cx: &mut App) {
  891        cx.set_global(GlobalAppState(state));
  892    }
  893
  894    #[cfg(any(test, feature = "test-support"))]
  895    pub fn test(cx: &mut App) -> Arc<Self> {
  896        use node_runtime::NodeRuntime;
  897        use session::Session;
  898        use settings::SettingsStore;
  899
  900        if !cx.has_global::<SettingsStore>() {
  901            let settings_store = SettingsStore::test(cx);
  902            cx.set_global(settings_store);
  903        }
  904
  905        let fs = fs::FakeFs::new(cx.background_executor().clone());
  906        let languages = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));
  907        let clock = Arc::new(clock::FakeSystemClock::new());
  908        let http_client = http_client::FakeHttpClient::with_404_response();
  909        let client = Client::new(clock, http_client.clone(), cx);
  910        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
  911        let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
  912        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
  913
  914        theme::init(theme::LoadThemes::JustBase, cx);
  915        client::init(&client, cx);
  916        crate::init_settings(cx);
  917
  918        Arc::new(Self {
  919            client,
  920            fs,
  921            languages,
  922            user_store,
  923            workspace_store,
  924            node_runtime: NodeRuntime::unavailable(),
  925            build_window_options: |_, _| Default::default(),
  926            session,
  927        })
  928    }
  929}
  930
  931struct DelayedDebouncedEditAction {
  932    task: Option<Task<()>>,
  933    cancel_channel: Option<oneshot::Sender<()>>,
  934}
  935
  936impl DelayedDebouncedEditAction {
  937    fn new() -> DelayedDebouncedEditAction {
  938        DelayedDebouncedEditAction {
  939            task: None,
  940            cancel_channel: None,
  941        }
  942    }
  943
  944    fn fire_new<F>(
  945        &mut self,
  946        delay: Duration,
  947        window: &mut Window,
  948        cx: &mut Context<Workspace>,
  949        func: F,
  950    ) where
  951        F: 'static
  952            + Send
  953            + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> Task<Result<()>>,
  954    {
  955        if let Some(channel) = self.cancel_channel.take() {
  956            _ = channel.send(());
  957        }
  958
  959        let (sender, mut receiver) = oneshot::channel::<()>();
  960        self.cancel_channel = Some(sender);
  961
  962        let previous_task = self.task.take();
  963        self.task = Some(cx.spawn_in(window, async move |workspace, cx| {
  964            let mut timer = cx.background_executor().timer(delay).fuse();
  965            if let Some(previous_task) = previous_task {
  966                previous_task.await;
  967            }
  968
  969            futures::select_biased! {
  970                _ = receiver => return,
  971                    _ = timer => {}
  972            }
  973
  974            if let Some(result) = workspace
  975                .update_in(cx, |workspace, window, cx| (func)(workspace, window, cx))
  976                .log_err()
  977            {
  978                result.await.log_err();
  979            }
  980        }));
  981    }
  982}
  983
  984pub enum Event {
  985    PaneAdded(Entity<Pane>),
  986    PaneRemoved,
  987    ItemAdded {
  988        item: Box<dyn ItemHandle>,
  989    },
  990    ItemRemoved,
  991    ActiveItemChanged,
  992    UserSavedItem {
  993        pane: WeakEntity<Pane>,
  994        item: Box<dyn WeakItemHandle>,
  995        save_intent: SaveIntent,
  996    },
  997    ContactRequestedJoin(u64),
  998    WorkspaceCreated(WeakEntity<Workspace>),
  999    OpenBundledFile {
 1000        text: Cow<'static, str>,
 1001        title: &'static str,
 1002        language: &'static str,
 1003    },
 1004    ZoomChanged,
 1005    ModalOpened,
 1006    ClearActivityIndicator,
 1007}
 1008
 1009#[derive(Debug)]
 1010pub enum OpenVisible {
 1011    All,
 1012    None,
 1013    OnlyFiles,
 1014    OnlyDirectories,
 1015}
 1016
 1017enum WorkspaceLocation {
 1018    // Valid local paths or SSH project to serialize
 1019    Location(SerializedWorkspaceLocation),
 1020    // No valid location found hence clear session id
 1021    DetachFromSession,
 1022    // No valid location found to serialize
 1023    None,
 1024}
 1025
 1026type PromptForNewPath = Box<
 1027    dyn Fn(
 1028        &mut Workspace,
 1029        DirectoryLister,
 1030        &mut Window,
 1031        &mut Context<Workspace>,
 1032    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1033>;
 1034
 1035type PromptForOpenPath = Box<
 1036    dyn Fn(
 1037        &mut Workspace,
 1038        DirectoryLister,
 1039        &mut Window,
 1040        &mut Context<Workspace>,
 1041    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1042>;
 1043
 1044#[derive(Default)]
 1045struct DispatchingKeystrokes {
 1046    dispatched: HashSet<Vec<Keystroke>>,
 1047    queue: VecDeque<Keystroke>,
 1048    task: Option<Shared<Task<()>>>,
 1049}
 1050
 1051/// Collects everything project-related for a certain window opened.
 1052/// In some way, is a counterpart of a window, as the [`WindowHandle`] could be downcast into `Workspace`.
 1053///
 1054/// A `Workspace` usually consists of 1 or more projects, a central pane group, 3 docks and a status bar.
 1055/// The `Workspace` owns everybody's state and serves as a default, "global context",
 1056/// that can be used to register a global action to be triggered from any place in the window.
 1057pub struct Workspace {
 1058    weak_self: WeakEntity<Self>,
 1059    workspace_actions: Vec<Box<dyn Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div>>,
 1060    zoomed: Option<AnyWeakView>,
 1061    previous_dock_drag_coordinates: Option<Point<Pixels>>,
 1062    zoomed_position: Option<DockPosition>,
 1063    center: PaneGroup,
 1064    left_dock: Entity<Dock>,
 1065    bottom_dock: Entity<Dock>,
 1066    right_dock: Entity<Dock>,
 1067    panes: Vec<Entity<Pane>>,
 1068    panes_by_item: HashMap<EntityId, WeakEntity<Pane>>,
 1069    active_pane: Entity<Pane>,
 1070    last_active_center_pane: Option<WeakEntity<Pane>>,
 1071    last_active_view_id: Option<proto::ViewId>,
 1072    status_bar: Entity<StatusBar>,
 1073    modal_layer: Entity<ModalLayer>,
 1074    toast_layer: Entity<ToastLayer>,
 1075    titlebar_item: Option<AnyView>,
 1076    notifications: Notifications,
 1077    suppressed_notifications: HashSet<NotificationId>,
 1078    project: Entity<Project>,
 1079    follower_states: HashMap<CollaboratorId, FollowerState>,
 1080    last_leaders_by_pane: HashMap<WeakEntity<Pane>, CollaboratorId>,
 1081    window_edited: bool,
 1082    last_window_title: Option<String>,
 1083    dirty_items: HashMap<EntityId, Subscription>,
 1084    active_call: Option<(Entity<ActiveCall>, Vec<Subscription>)>,
 1085    leader_updates_tx: mpsc::UnboundedSender<(PeerId, proto::UpdateFollowers)>,
 1086    database_id: Option<WorkspaceId>,
 1087    app_state: Arc<AppState>,
 1088    dispatching_keystrokes: Rc<RefCell<DispatchingKeystrokes>>,
 1089    _subscriptions: Vec<Subscription>,
 1090    _apply_leader_updates: Task<Result<()>>,
 1091    _observe_current_user: Task<Result<()>>,
 1092    _schedule_serialize_workspace: Option<Task<()>>,
 1093    _schedule_serialize_ssh_paths: Option<Task<()>>,
 1094    pane_history_timestamp: Arc<AtomicUsize>,
 1095    bounds: Bounds<Pixels>,
 1096    pub centered_layout: bool,
 1097    bounds_save_task_queued: Option<Task<()>>,
 1098    on_prompt_for_new_path: Option<PromptForNewPath>,
 1099    on_prompt_for_open_path: Option<PromptForOpenPath>,
 1100    terminal_provider: Option<Box<dyn TerminalProvider>>,
 1101    debugger_provider: Option<Arc<dyn DebuggerProvider>>,
 1102    serializable_items_tx: UnboundedSender<Box<dyn SerializableItemHandle>>,
 1103    serialized_ssh_project: Option<SerializedSshProject>,
 1104    _items_serializer: Task<Result<()>>,
 1105    session_id: Option<String>,
 1106    scheduled_tasks: Vec<Task<()>>,
 1107}
 1108
 1109impl EventEmitter<Event> for Workspace {}
 1110
 1111#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
 1112pub struct ViewId {
 1113    pub creator: CollaboratorId,
 1114    pub id: u64,
 1115}
 1116
 1117pub struct FollowerState {
 1118    center_pane: Entity<Pane>,
 1119    dock_pane: Option<Entity<Pane>>,
 1120    active_view_id: Option<ViewId>,
 1121    items_by_leader_view_id: HashMap<ViewId, FollowerView>,
 1122}
 1123
 1124struct FollowerView {
 1125    view: Box<dyn FollowableItemHandle>,
 1126    location: Option<proto::PanelId>,
 1127}
 1128
 1129impl Workspace {
 1130    const DEFAULT_PADDING: f32 = 0.2;
 1131    const MAX_PADDING: f32 = 0.4;
 1132
 1133    pub fn new(
 1134        workspace_id: Option<WorkspaceId>,
 1135        project: Entity<Project>,
 1136        app_state: Arc<AppState>,
 1137        window: &mut Window,
 1138        cx: &mut Context<Self>,
 1139    ) -> Self {
 1140        cx.subscribe_in(&project, window, move |this, _, event, window, cx| {
 1141            match event {
 1142                project::Event::RemoteIdChanged(_) => {
 1143                    this.update_window_title(window, cx);
 1144                }
 1145
 1146                project::Event::CollaboratorLeft(peer_id) => {
 1147                    this.collaborator_left(*peer_id, window, cx);
 1148                }
 1149
 1150                project::Event::WorktreeRemoved(_) | project::Event::WorktreeAdded(_) => {
 1151                    this.update_window_title(window, cx);
 1152                    this.update_ssh_paths(cx);
 1153                    this.serialize_ssh_paths(window, cx);
 1154                    this.serialize_workspace(window, cx);
 1155                    // This event could be triggered by `AddFolderToProject` or `RemoveFromProject`.
 1156                    this.update_history(cx);
 1157                }
 1158
 1159                project::Event::DisconnectedFromHost => {
 1160                    this.update_window_edited(window, cx);
 1161                    let leaders_to_unfollow =
 1162                        this.follower_states.keys().copied().collect::<Vec<_>>();
 1163                    for leader_id in leaders_to_unfollow {
 1164                        this.unfollow(leader_id, window, cx);
 1165                    }
 1166                }
 1167
 1168                project::Event::DisconnectedFromSshRemote => {
 1169                    this.update_window_edited(window, cx);
 1170                }
 1171
 1172                project::Event::Closed => {
 1173                    window.remove_window();
 1174                }
 1175
 1176                project::Event::DeletedEntry(_, entry_id) => {
 1177                    for pane in this.panes.iter() {
 1178                        pane.update(cx, |pane, cx| {
 1179                            pane.handle_deleted_project_item(*entry_id, window, cx)
 1180                        });
 1181                    }
 1182                }
 1183
 1184                project::Event::Toast {
 1185                    notification_id,
 1186                    message,
 1187                } => this.show_notification(
 1188                    NotificationId::named(notification_id.clone()),
 1189                    cx,
 1190                    |cx| cx.new(|cx| MessageNotification::new(message.clone(), cx)),
 1191                ),
 1192
 1193                project::Event::HideToast { notification_id } => {
 1194                    this.dismiss_notification(&NotificationId::named(notification_id.clone()), cx)
 1195                }
 1196
 1197                project::Event::LanguageServerPrompt(request) => {
 1198                    struct LanguageServerPrompt;
 1199
 1200                    let mut hasher = DefaultHasher::new();
 1201                    request.lsp_name.as_str().hash(&mut hasher);
 1202                    let id = hasher.finish();
 1203
 1204                    this.show_notification(
 1205                        NotificationId::composite::<LanguageServerPrompt>(id as usize),
 1206                        cx,
 1207                        |cx| {
 1208                            cx.new(|cx| {
 1209                                notifications::LanguageServerPrompt::new(request.clone(), cx)
 1210                            })
 1211                        },
 1212                    );
 1213                }
 1214
 1215                project::Event::AgentLocationChanged => {
 1216                    this.handle_agent_location_changed(window, cx)
 1217                }
 1218
 1219                _ => {}
 1220            }
 1221            cx.notify()
 1222        })
 1223        .detach();
 1224
 1225        cx.subscribe_in(
 1226            &project.read(cx).breakpoint_store(),
 1227            window,
 1228            |workspace, _, event, window, cx| match event {
 1229                BreakpointStoreEvent::BreakpointsUpdated(_, _)
 1230                | BreakpointStoreEvent::BreakpointsCleared(_) => {
 1231                    workspace.serialize_workspace(window, cx);
 1232                }
 1233                BreakpointStoreEvent::SetDebugLine | BreakpointStoreEvent::ClearDebugLines => {}
 1234            },
 1235        )
 1236        .detach();
 1237
 1238        cx.on_focus_lost(window, |this, window, cx| {
 1239            let focus_handle = this.focus_handle(cx);
 1240            window.focus(&focus_handle);
 1241        })
 1242        .detach();
 1243
 1244        let weak_handle = cx.entity().downgrade();
 1245        let pane_history_timestamp = Arc::new(AtomicUsize::new(0));
 1246
 1247        let center_pane = cx.new(|cx| {
 1248            let mut center_pane = Pane::new(
 1249                weak_handle.clone(),
 1250                project.clone(),
 1251                pane_history_timestamp.clone(),
 1252                None,
 1253                NewFile.boxed_clone(),
 1254                window,
 1255                cx,
 1256            );
 1257            center_pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 1258            center_pane
 1259        });
 1260        cx.subscribe_in(&center_pane, window, Self::handle_pane_event)
 1261            .detach();
 1262
 1263        window.focus(&center_pane.focus_handle(cx));
 1264
 1265        cx.emit(Event::PaneAdded(center_pane.clone()));
 1266
 1267        let window_handle = window.window_handle().downcast::<Workspace>().unwrap();
 1268        app_state.workspace_store.update(cx, |store, _| {
 1269            store.workspaces.insert(window_handle);
 1270        });
 1271
 1272        let mut current_user = app_state.user_store.read(cx).watch_current_user();
 1273        let mut connection_status = app_state.client.status();
 1274        let _observe_current_user = cx.spawn_in(window, async move |this, cx| {
 1275            current_user.next().await;
 1276            connection_status.next().await;
 1277            let mut stream =
 1278                Stream::map(current_user, drop).merge(Stream::map(connection_status, drop));
 1279
 1280            while stream.recv().await.is_some() {
 1281                this.update(cx, |_, cx| cx.notify())?;
 1282            }
 1283            anyhow::Ok(())
 1284        });
 1285
 1286        // All leader updates are enqueued and then processed in a single task, so
 1287        // that each asynchronous operation can be run in order.
 1288        let (leader_updates_tx, mut leader_updates_rx) =
 1289            mpsc::unbounded::<(PeerId, proto::UpdateFollowers)>();
 1290        let _apply_leader_updates = cx.spawn_in(window, async move |this, cx| {
 1291            while let Some((leader_id, update)) = leader_updates_rx.next().await {
 1292                Self::process_leader_update(&this, leader_id, update, cx)
 1293                    .await
 1294                    .log_err();
 1295            }
 1296
 1297            Ok(())
 1298        });
 1299
 1300        cx.emit(Event::WorkspaceCreated(weak_handle.clone()));
 1301        let modal_layer = cx.new(|_| ModalLayer::new());
 1302        let toast_layer = cx.new(|_| ToastLayer::new());
 1303        cx.subscribe(
 1304            &modal_layer,
 1305            |_, _, _: &modal_layer::ModalOpenedEvent, cx| {
 1306                cx.emit(Event::ModalOpened);
 1307            },
 1308        )
 1309        .detach();
 1310
 1311        let left_dock = Dock::new(DockPosition::Left, modal_layer.clone(), window, cx);
 1312        let bottom_dock = Dock::new(DockPosition::Bottom, modal_layer.clone(), window, cx);
 1313        let right_dock = Dock::new(DockPosition::Right, modal_layer.clone(), window, cx);
 1314        let left_dock_buttons = cx.new(|cx| PanelButtons::new(left_dock.clone(), cx));
 1315        let bottom_dock_buttons = cx.new(|cx| PanelButtons::new(bottom_dock.clone(), cx));
 1316        let right_dock_buttons = cx.new(|cx| PanelButtons::new(right_dock.clone(), cx));
 1317        let status_bar = cx.new(|cx| {
 1318            let mut status_bar = StatusBar::new(&center_pane.clone(), window, cx);
 1319            status_bar.add_left_item(left_dock_buttons, window, cx);
 1320            status_bar.add_right_item(right_dock_buttons, window, cx);
 1321            status_bar.add_right_item(bottom_dock_buttons, window, cx);
 1322            status_bar
 1323        });
 1324
 1325        let session_id = app_state.session.read(cx).id().to_owned();
 1326
 1327        let mut active_call = None;
 1328        if let Some(call) = ActiveCall::try_global(cx) {
 1329            let call = call.clone();
 1330            let subscriptions = vec![cx.subscribe_in(&call, window, Self::on_active_call_event)];
 1331            active_call = Some((call, subscriptions));
 1332        }
 1333
 1334        let (serializable_items_tx, serializable_items_rx) =
 1335            mpsc::unbounded::<Box<dyn SerializableItemHandle>>();
 1336        let _items_serializer = cx.spawn_in(window, async move |this, cx| {
 1337            Self::serialize_items(&this, serializable_items_rx, cx).await
 1338        });
 1339
 1340        let subscriptions = vec![
 1341            cx.observe_window_activation(window, Self::on_window_activation_changed),
 1342            cx.observe_window_bounds(window, move |this, window, cx| {
 1343                if this.bounds_save_task_queued.is_some() {
 1344                    return;
 1345                }
 1346                this.bounds_save_task_queued = Some(cx.spawn_in(window, async move |this, cx| {
 1347                    cx.background_executor()
 1348                        .timer(Duration::from_millis(100))
 1349                        .await;
 1350                    this.update_in(cx, |this, window, cx| {
 1351                        if let Some(display) = window.display(cx) {
 1352                            if let Ok(display_uuid) = display.uuid() {
 1353                                let window_bounds = window.inner_window_bounds();
 1354                                if let Some(database_id) = workspace_id {
 1355                                    cx.background_executor()
 1356                                        .spawn(DB.set_window_open_status(
 1357                                            database_id,
 1358                                            SerializedWindowBounds(window_bounds),
 1359                                            display_uuid,
 1360                                        ))
 1361                                        .detach_and_log_err(cx);
 1362                                }
 1363                            }
 1364                        }
 1365                        this.bounds_save_task_queued.take();
 1366                    })
 1367                    .ok();
 1368                }));
 1369                cx.notify();
 1370            }),
 1371            cx.observe_window_appearance(window, |_, window, cx| {
 1372                let window_appearance = window.appearance();
 1373
 1374                *SystemAppearance::global_mut(cx) = SystemAppearance(window_appearance.into());
 1375
 1376                ThemeSettings::reload_current_theme(cx);
 1377                ThemeSettings::reload_current_icon_theme(cx);
 1378            }),
 1379            cx.on_release(move |this, cx| {
 1380                this.app_state.workspace_store.update(cx, move |store, _| {
 1381                    store.workspaces.remove(&window_handle.clone());
 1382                })
 1383            }),
 1384        ];
 1385
 1386        cx.defer_in(window, |this, window, cx| {
 1387            this.update_window_title(window, cx);
 1388            this.show_initial_notifications(cx);
 1389        });
 1390        Workspace {
 1391            weak_self: weak_handle.clone(),
 1392            zoomed: None,
 1393            zoomed_position: None,
 1394            previous_dock_drag_coordinates: None,
 1395            center: PaneGroup::new(center_pane.clone()),
 1396            panes: vec![center_pane.clone()],
 1397            panes_by_item: Default::default(),
 1398            active_pane: center_pane.clone(),
 1399            last_active_center_pane: Some(center_pane.downgrade()),
 1400            last_active_view_id: None,
 1401            status_bar,
 1402            modal_layer,
 1403            toast_layer,
 1404            titlebar_item: None,
 1405            notifications: Notifications::default(),
 1406            suppressed_notifications: HashSet::default(),
 1407            left_dock,
 1408            bottom_dock,
 1409            right_dock,
 1410            project: project.clone(),
 1411            follower_states: Default::default(),
 1412            last_leaders_by_pane: Default::default(),
 1413            dispatching_keystrokes: Default::default(),
 1414            window_edited: false,
 1415            last_window_title: None,
 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                latest_project_path_opened.map_or(true, |path| path == history_path)
 1812            })
 1813    }
 1814
 1815    pub fn recent_navigation_history(
 1816        &self,
 1817        limit: Option<usize>,
 1818        cx: &App,
 1819    ) -> Vec<(ProjectPath, Option<PathBuf>)> {
 1820        self.recent_navigation_history_iter(cx)
 1821            .take(limit.unwrap_or(usize::MAX))
 1822            .collect()
 1823    }
 1824
 1825    fn navigate_history(
 1826        &mut self,
 1827        pane: WeakEntity<Pane>,
 1828        mode: NavigationMode,
 1829        window: &mut Window,
 1830        cx: &mut Context<Workspace>,
 1831    ) -> Task<Result<()>> {
 1832        let to_load = if let Some(pane) = pane.upgrade() {
 1833            pane.update(cx, |pane, cx| {
 1834                window.focus(&pane.focus_handle(cx));
 1835                loop {
 1836                    // Retrieve the weak item handle from the history.
 1837                    let entry = pane.nav_history_mut().pop(mode, cx)?;
 1838
 1839                    // If the item is still present in this pane, then activate it.
 1840                    if let Some(index) = entry
 1841                        .item
 1842                        .upgrade()
 1843                        .and_then(|v| pane.index_for_item(v.as_ref()))
 1844                    {
 1845                        let prev_active_item_index = pane.active_item_index();
 1846                        pane.nav_history_mut().set_mode(mode);
 1847                        pane.activate_item(index, true, true, window, cx);
 1848                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1849
 1850                        let mut navigated = prev_active_item_index != pane.active_item_index();
 1851                        if let Some(data) = entry.data {
 1852                            navigated |= pane.active_item()?.navigate(data, window, cx);
 1853                        }
 1854
 1855                        if navigated {
 1856                            break None;
 1857                        }
 1858                    } else {
 1859                        // If the item is no longer present in this pane, then retrieve its
 1860                        // path info in order to reopen it.
 1861                        break pane
 1862                            .nav_history()
 1863                            .path_for_item(entry.item.id())
 1864                            .map(|(project_path, abs_path)| (project_path, abs_path, entry));
 1865                    }
 1866                }
 1867            })
 1868        } else {
 1869            None
 1870        };
 1871
 1872        if let Some((project_path, abs_path, entry)) = to_load {
 1873            // If the item was no longer present, then load it again from its previous path, first try the local path
 1874            let open_by_project_path = self.load_path(project_path.clone(), window, cx);
 1875
 1876            cx.spawn_in(window, async move  |workspace, cx| {
 1877                let open_by_project_path = open_by_project_path.await;
 1878                let mut navigated = false;
 1879                match open_by_project_path
 1880                    .with_context(|| format!("Navigating to {project_path:?}"))
 1881                {
 1882                    Ok((project_entry_id, build_item)) => {
 1883                        let prev_active_item_id = pane.update(cx, |pane, _| {
 1884                            pane.nav_history_mut().set_mode(mode);
 1885                            pane.active_item().map(|p| p.item_id())
 1886                        })?;
 1887
 1888                        pane.update_in(cx, |pane, window, cx| {
 1889                            let item = pane.open_item(
 1890                                project_entry_id,
 1891                                project_path,
 1892                                true,
 1893                                entry.is_preview,
 1894                                true,
 1895                                None,
 1896                                window, cx,
 1897                                build_item,
 1898                            );
 1899                            navigated |= Some(item.item_id()) != prev_active_item_id;
 1900                            pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1901                            if let Some(data) = entry.data {
 1902                                navigated |= item.navigate(data, window, cx);
 1903                            }
 1904                        })?;
 1905                    }
 1906                    Err(open_by_project_path_e) => {
 1907                        // Fall back to opening by abs path, in case an external file was opened and closed,
 1908                        // and its worktree is now dropped
 1909                        if let Some(abs_path) = abs_path {
 1910                            let prev_active_item_id = pane.update(cx, |pane, _| {
 1911                                pane.nav_history_mut().set_mode(mode);
 1912                                pane.active_item().map(|p| p.item_id())
 1913                            })?;
 1914                            let open_by_abs_path = workspace.update_in(cx, |workspace, window, cx| {
 1915                                workspace.open_abs_path(abs_path.clone(), OpenOptions { visible: Some(OpenVisible::None), ..Default::default() }, window, cx)
 1916                            })?;
 1917                            match open_by_abs_path
 1918                                .await
 1919                                .with_context(|| format!("Navigating to {abs_path:?}"))
 1920                            {
 1921                                Ok(item) => {
 1922                                    pane.update_in(cx, |pane, window, cx| {
 1923                                        navigated |= Some(item.item_id()) != prev_active_item_id;
 1924                                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1925                                        if let Some(data) = entry.data {
 1926                                            navigated |= item.navigate(data, window, cx);
 1927                                        }
 1928                                    })?;
 1929                                }
 1930                                Err(open_by_abs_path_e) => {
 1931                                    log::error!("Failed to navigate history: {open_by_project_path_e:#} and {open_by_abs_path_e:#}");
 1932                                }
 1933                            }
 1934                        }
 1935                    }
 1936                }
 1937
 1938                if !navigated {
 1939                    workspace
 1940                        .update_in(cx, |workspace, window, cx| {
 1941                            Self::navigate_history(workspace, pane, mode, window, cx)
 1942                        })?
 1943                        .await?;
 1944                }
 1945
 1946                Ok(())
 1947            })
 1948        } else {
 1949            Task::ready(Ok(()))
 1950        }
 1951    }
 1952
 1953    pub fn go_back(
 1954        &mut self,
 1955        pane: WeakEntity<Pane>,
 1956        window: &mut Window,
 1957        cx: &mut Context<Workspace>,
 1958    ) -> Task<Result<()>> {
 1959        self.navigate_history(pane, NavigationMode::GoingBack, window, cx)
 1960    }
 1961
 1962    pub fn go_forward(
 1963        &mut self,
 1964        pane: WeakEntity<Pane>,
 1965        window: &mut Window,
 1966        cx: &mut Context<Workspace>,
 1967    ) -> Task<Result<()>> {
 1968        self.navigate_history(pane, NavigationMode::GoingForward, window, cx)
 1969    }
 1970
 1971    pub fn reopen_closed_item(
 1972        &mut self,
 1973        window: &mut Window,
 1974        cx: &mut Context<Workspace>,
 1975    ) -> Task<Result<()>> {
 1976        self.navigate_history(
 1977            self.active_pane().downgrade(),
 1978            NavigationMode::ReopeningClosedItem,
 1979            window,
 1980            cx,
 1981        )
 1982    }
 1983
 1984    pub fn client(&self) -> &Arc<Client> {
 1985        &self.app_state.client
 1986    }
 1987
 1988    pub fn set_titlebar_item(&mut self, item: AnyView, _: &mut Window, cx: &mut Context<Self>) {
 1989        self.titlebar_item = Some(item);
 1990        cx.notify();
 1991    }
 1992
 1993    pub fn set_prompt_for_new_path(&mut self, prompt: PromptForNewPath) {
 1994        self.on_prompt_for_new_path = Some(prompt)
 1995    }
 1996
 1997    pub fn set_prompt_for_open_path(&mut self, prompt: PromptForOpenPath) {
 1998        self.on_prompt_for_open_path = Some(prompt)
 1999    }
 2000
 2001    pub fn set_terminal_provider(&mut self, provider: impl TerminalProvider + 'static) {
 2002        self.terminal_provider = Some(Box::new(provider));
 2003    }
 2004
 2005    pub fn set_debugger_provider(&mut self, provider: impl DebuggerProvider + 'static) {
 2006        self.debugger_provider = Some(Arc::new(provider));
 2007    }
 2008
 2009    pub fn debugger_provider(&self) -> Option<Arc<dyn DebuggerProvider>> {
 2010        self.debugger_provider.clone()
 2011    }
 2012
 2013    pub fn serialized_ssh_project(&self) -> Option<SerializedSshProject> {
 2014        self.serialized_ssh_project.clone()
 2015    }
 2016
 2017    pub fn set_serialized_ssh_project(&mut self, serialized_ssh_project: SerializedSshProject) {
 2018        self.serialized_ssh_project = Some(serialized_ssh_project);
 2019    }
 2020
 2021    pub fn prompt_for_open_path(
 2022        &mut self,
 2023        path_prompt_options: PathPromptOptions,
 2024        lister: DirectoryLister,
 2025        window: &mut Window,
 2026        cx: &mut Context<Self>,
 2027    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2028        if !lister.is_local(cx) || !WorkspaceSettings::get_global(cx).use_system_path_prompts {
 2029            let prompt = self.on_prompt_for_open_path.take().unwrap();
 2030            let rx = prompt(self, lister, window, cx);
 2031            self.on_prompt_for_open_path = Some(prompt);
 2032            rx
 2033        } else {
 2034            let (tx, rx) = oneshot::channel();
 2035            let abs_path = cx.prompt_for_paths(path_prompt_options);
 2036
 2037            cx.spawn_in(window, async move |workspace, cx| {
 2038                let Ok(result) = abs_path.await else {
 2039                    return Ok(());
 2040                };
 2041
 2042                match result {
 2043                    Ok(result) => {
 2044                        tx.send(result).ok();
 2045                    }
 2046                    Err(err) => {
 2047                        let rx = workspace.update_in(cx, |workspace, window, cx| {
 2048                            workspace.show_portal_error(err.to_string(), cx);
 2049                            let prompt = workspace.on_prompt_for_open_path.take().unwrap();
 2050                            let rx = prompt(workspace, lister, window, cx);
 2051                            workspace.on_prompt_for_open_path = Some(prompt);
 2052                            rx
 2053                        })?;
 2054                        if let Ok(path) = rx.await {
 2055                            tx.send(path).ok();
 2056                        }
 2057                    }
 2058                };
 2059                anyhow::Ok(())
 2060            })
 2061            .detach();
 2062
 2063            rx
 2064        }
 2065    }
 2066
 2067    pub fn prompt_for_new_path(
 2068        &mut self,
 2069        lister: DirectoryLister,
 2070        suggested_name: Option<String>,
 2071        window: &mut Window,
 2072        cx: &mut Context<Self>,
 2073    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2074        if self.project.read(cx).is_via_collab()
 2075            || self.project.read(cx).is_via_ssh()
 2076            || !WorkspaceSettings::get_global(cx).use_system_path_prompts
 2077        {
 2078            let prompt = self.on_prompt_for_new_path.take().unwrap();
 2079            let rx = prompt(self, lister, window, cx);
 2080            self.on_prompt_for_new_path = Some(prompt);
 2081            return rx;
 2082        }
 2083
 2084        let (tx, rx) = oneshot::channel();
 2085        cx.spawn_in(window, async move |workspace, cx| {
 2086            let abs_path = workspace.update(cx, |workspace, cx| {
 2087                let relative_to = workspace
 2088                    .most_recent_active_path(cx)
 2089                    .and_then(|p| p.parent().map(|p| p.to_path_buf()))
 2090                    .or_else(|| {
 2091                        let project = workspace.project.read(cx);
 2092                        project.visible_worktrees(cx).find_map(|worktree| {
 2093                            Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
 2094                        })
 2095                    })
 2096                    .or_else(std::env::home_dir)
 2097                    .unwrap_or_else(|| PathBuf::from(""));
 2098                cx.prompt_for_new_path(&relative_to, suggested_name.as_deref())
 2099            })?;
 2100            let abs_path = match abs_path.await? {
 2101                Ok(path) => path,
 2102                Err(err) => {
 2103                    let rx = workspace.update_in(cx, |workspace, window, cx| {
 2104                        workspace.show_portal_error(err.to_string(), cx);
 2105
 2106                        let prompt = workspace.on_prompt_for_new_path.take().unwrap();
 2107                        let rx = prompt(workspace, lister, window, cx);
 2108                        workspace.on_prompt_for_new_path = Some(prompt);
 2109                        rx
 2110                    })?;
 2111                    if let Ok(path) = rx.await {
 2112                        tx.send(path).ok();
 2113                    }
 2114                    return anyhow::Ok(());
 2115                }
 2116            };
 2117
 2118            tx.send(abs_path.map(|path| vec![path])).ok();
 2119            anyhow::Ok(())
 2120        })
 2121        .detach();
 2122
 2123        rx
 2124    }
 2125
 2126    pub fn titlebar_item(&self) -> Option<AnyView> {
 2127        self.titlebar_item.clone()
 2128    }
 2129
 2130    /// Call the given callback with a workspace whose project is local.
 2131    ///
 2132    /// If the given workspace has a local project, then it will be passed
 2133    /// to the callback. Otherwise, a new empty window will be created.
 2134    pub fn with_local_workspace<T, F>(
 2135        &mut self,
 2136        window: &mut Window,
 2137        cx: &mut Context<Self>,
 2138        callback: F,
 2139    ) -> Task<Result<T>>
 2140    where
 2141        T: 'static,
 2142        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
 2143    {
 2144        if self.project.read(cx).is_local() {
 2145            Task::ready(Ok(callback(self, window, cx)))
 2146        } else {
 2147            let env = self.project.read(cx).cli_environment(cx);
 2148            let task = Self::new_local(Vec::new(), self.app_state.clone(), None, env, cx);
 2149            cx.spawn_in(window, async move |_vh, cx| {
 2150                let (workspace, _) = task.await?;
 2151                workspace.update(cx, callback)
 2152            })
 2153        }
 2154    }
 2155
 2156    pub fn worktrees<'a>(&self, cx: &'a App) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2157        self.project.read(cx).worktrees(cx)
 2158    }
 2159
 2160    pub fn visible_worktrees<'a>(
 2161        &self,
 2162        cx: &'a App,
 2163    ) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2164        self.project.read(cx).visible_worktrees(cx)
 2165    }
 2166
 2167    #[cfg(any(test, feature = "test-support"))]
 2168    pub fn worktree_scans_complete(&self, cx: &App) -> impl Future<Output = ()> + 'static + use<> {
 2169        let futures = self
 2170            .worktrees(cx)
 2171            .filter_map(|worktree| worktree.read(cx).as_local())
 2172            .map(|worktree| worktree.scan_complete())
 2173            .collect::<Vec<_>>();
 2174        async move {
 2175            for future in futures {
 2176                future.await;
 2177            }
 2178        }
 2179    }
 2180
 2181    pub fn close_global(cx: &mut App) {
 2182        cx.defer(|cx| {
 2183            cx.windows().iter().find(|window| {
 2184                window
 2185                    .update(cx, |_, window, _| {
 2186                        if window.is_window_active() {
 2187                            //This can only get called when the window's project connection has been lost
 2188                            //so we don't need to prompt the user for anything and instead just close the window
 2189                            window.remove_window();
 2190                            true
 2191                        } else {
 2192                            false
 2193                        }
 2194                    })
 2195                    .unwrap_or(false)
 2196            });
 2197        });
 2198    }
 2199
 2200    pub fn close_window(&mut self, _: &CloseWindow, window: &mut Window, cx: &mut Context<Self>) {
 2201        let prepare = self.prepare_to_close(CloseIntent::CloseWindow, window, cx);
 2202        cx.spawn_in(window, async move |_, cx| {
 2203            if prepare.await? {
 2204                cx.update(|window, _cx| window.remove_window())?;
 2205            }
 2206            anyhow::Ok(())
 2207        })
 2208        .detach_and_log_err(cx)
 2209    }
 2210
 2211    pub fn move_focused_panel_to_next_position(
 2212        &mut self,
 2213        _: &MoveFocusedPanelToNextPosition,
 2214        window: &mut Window,
 2215        cx: &mut Context<Self>,
 2216    ) {
 2217        let docks = self.all_docks();
 2218        let active_dock = docks
 2219            .into_iter()
 2220            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 2221
 2222        if let Some(dock) = active_dock {
 2223            dock.update(cx, |dock, cx| {
 2224                let active_panel = dock
 2225                    .active_panel()
 2226                    .filter(|panel| panel.panel_focus_handle(cx).contains_focused(window, cx));
 2227
 2228                if let Some(panel) = active_panel {
 2229                    panel.move_to_next_position(window, cx);
 2230                }
 2231            })
 2232        }
 2233    }
 2234
 2235    pub fn prepare_to_close(
 2236        &mut self,
 2237        close_intent: CloseIntent,
 2238        window: &mut Window,
 2239        cx: &mut Context<Self>,
 2240    ) -> Task<Result<bool>> {
 2241        let active_call = self.active_call().cloned();
 2242
 2243        // On Linux and Windows, closing the last window should restore the last workspace.
 2244        let save_last_workspace = cfg!(not(target_os = "macos"))
 2245            && close_intent != CloseIntent::ReplaceWindow
 2246            && cx.windows().len() == 1;
 2247
 2248        cx.spawn_in(window, async move |this, cx| {
 2249            let workspace_count = cx.update(|_window, cx| {
 2250                cx.windows()
 2251                    .iter()
 2252                    .filter(|window| window.downcast::<Workspace>().is_some())
 2253                    .count()
 2254            })?;
 2255
 2256            if let Some(active_call) = active_call {
 2257                if close_intent != CloseIntent::Quit
 2258                    && workspace_count == 1
 2259                    && active_call.read_with(cx, |call, _| call.room().is_some())?
 2260                {
 2261                    let answer = cx.update(|window, cx| {
 2262                        window.prompt(
 2263                            PromptLevel::Warning,
 2264                            "Do you want to leave the current call?",
 2265                            None,
 2266                            &["Close window and hang up", "Cancel"],
 2267                            cx,
 2268                        )
 2269                    })?;
 2270
 2271                    if answer.await.log_err() == Some(1) {
 2272                        return anyhow::Ok(false);
 2273                    } else {
 2274                        active_call
 2275                            .update(cx, |call, cx| call.hang_up(cx))?
 2276                            .await
 2277                            .log_err();
 2278                    }
 2279                }
 2280            }
 2281
 2282            let save_result = this
 2283                .update_in(cx, |this, window, cx| {
 2284                    this.save_all_internal(SaveIntent::Close, window, cx)
 2285                })?
 2286                .await;
 2287
 2288            // If we're not quitting, but closing, we remove the workspace from
 2289            // the current session.
 2290            if close_intent != CloseIntent::Quit
 2291                && !save_last_workspace
 2292                && save_result.as_ref().map_or(false, |&res| res)
 2293            {
 2294                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))?
 2295                    .await;
 2296            }
 2297
 2298            save_result
 2299        })
 2300    }
 2301
 2302    fn save_all(&mut self, action: &SaveAll, window: &mut Window, cx: &mut Context<Self>) {
 2303        self.save_all_internal(
 2304            action.save_intent.unwrap_or(SaveIntent::SaveAll),
 2305            window,
 2306            cx,
 2307        )
 2308        .detach_and_log_err(cx);
 2309    }
 2310
 2311    fn send_keystrokes(
 2312        &mut self,
 2313        action: &SendKeystrokes,
 2314        window: &mut Window,
 2315        cx: &mut Context<Self>,
 2316    ) {
 2317        let keystrokes: Vec<Keystroke> = action
 2318            .0
 2319            .split(' ')
 2320            .flat_map(|k| Keystroke::parse(k).log_err())
 2321            .collect();
 2322        let _ = self.send_keystrokes_impl(keystrokes, window, cx);
 2323    }
 2324
 2325    pub fn send_keystrokes_impl(
 2326        &mut self,
 2327        keystrokes: Vec<Keystroke>,
 2328        window: &mut Window,
 2329        cx: &mut Context<Self>,
 2330    ) -> Shared<Task<()>> {
 2331        let mut state = self.dispatching_keystrokes.borrow_mut();
 2332        if !state.dispatched.insert(keystrokes.clone()) {
 2333            cx.propagate();
 2334            return state.task.clone().unwrap();
 2335        }
 2336
 2337        state.queue.extend(keystrokes);
 2338
 2339        let keystrokes = self.dispatching_keystrokes.clone();
 2340        if state.task.is_none() {
 2341            state.task = Some(
 2342                window
 2343                    .spawn(cx, async move |cx| {
 2344                        // limit to 100 keystrokes to avoid infinite recursion.
 2345                        for _ in 0..100 {
 2346                            let mut state = keystrokes.borrow_mut();
 2347                            let Some(keystroke) = state.queue.pop_front() else {
 2348                                state.dispatched.clear();
 2349                                state.task.take();
 2350                                return;
 2351                            };
 2352                            drop(state);
 2353                            cx.update(|window, cx| {
 2354                                let focused = window.focused(cx);
 2355                                window.dispatch_keystroke(keystroke.clone(), cx);
 2356                                if window.focused(cx) != focused {
 2357                                    // dispatch_keystroke may cause the focus to change.
 2358                                    // draw's side effect is to schedule the FocusChanged events in the current flush effect cycle
 2359                                    // And we need that to happen before the next keystroke to keep vim mode happy...
 2360                                    // (Note that the tests always do this implicitly, so you must manually test with something like:
 2361                                    //   "bindings": { "g z": ["workspace::SendKeystrokes", ": j <enter> u"]}
 2362                                    // )
 2363                                    window.draw(cx).clear();
 2364                                }
 2365                            })
 2366                            .ok();
 2367                        }
 2368
 2369                        *keystrokes.borrow_mut() = Default::default();
 2370                        log::error!("over 100 keystrokes passed to send_keystrokes");
 2371                    })
 2372                    .shared(),
 2373            );
 2374        }
 2375        state.task.clone().unwrap()
 2376    }
 2377
 2378    fn save_all_internal(
 2379        &mut self,
 2380        mut save_intent: SaveIntent,
 2381        window: &mut Window,
 2382        cx: &mut Context<Self>,
 2383    ) -> Task<Result<bool>> {
 2384        if self.project.read(cx).is_disconnected(cx) {
 2385            return Task::ready(Ok(true));
 2386        }
 2387        let dirty_items = self
 2388            .panes
 2389            .iter()
 2390            .flat_map(|pane| {
 2391                pane.read(cx).items().filter_map(|item| {
 2392                    if item.is_dirty(cx) {
 2393                        item.tab_content_text(0, cx);
 2394                        Some((pane.downgrade(), item.boxed_clone()))
 2395                    } else {
 2396                        None
 2397                    }
 2398                })
 2399            })
 2400            .collect::<Vec<_>>();
 2401
 2402        let project = self.project.clone();
 2403        cx.spawn_in(window, async move |workspace, cx| {
 2404            let dirty_items = if save_intent == SaveIntent::Close && !dirty_items.is_empty() {
 2405                let (serialize_tasks, remaining_dirty_items) =
 2406                    workspace.update_in(cx, |workspace, window, cx| {
 2407                        let mut remaining_dirty_items = Vec::new();
 2408                        let mut serialize_tasks = Vec::new();
 2409                        for (pane, item) in dirty_items {
 2410                            if let Some(task) = item
 2411                                .to_serializable_item_handle(cx)
 2412                                .and_then(|handle| handle.serialize(workspace, true, window, cx))
 2413                            {
 2414                                serialize_tasks.push(task);
 2415                            } else {
 2416                                remaining_dirty_items.push((pane, item));
 2417                            }
 2418                        }
 2419                        (serialize_tasks, remaining_dirty_items)
 2420                    })?;
 2421
 2422                futures::future::try_join_all(serialize_tasks).await?;
 2423
 2424                if remaining_dirty_items.len() > 1 {
 2425                    let answer = workspace.update_in(cx, |_, window, cx| {
 2426                        let detail = Pane::file_names_for_prompt(
 2427                            &mut remaining_dirty_items.iter().map(|(_, handle)| handle),
 2428                            cx,
 2429                        );
 2430                        window.prompt(
 2431                            PromptLevel::Warning,
 2432                            &"Do you want to save all changes in the following files?",
 2433                            Some(&detail),
 2434                            &["Save all", "Discard all", "Cancel"],
 2435                            cx,
 2436                        )
 2437                    })?;
 2438                    match answer.await.log_err() {
 2439                        Some(0) => save_intent = SaveIntent::SaveAll,
 2440                        Some(1) => save_intent = SaveIntent::Skip,
 2441                        Some(2) => return Ok(false),
 2442                        _ => {}
 2443                    }
 2444                }
 2445
 2446                remaining_dirty_items
 2447            } else {
 2448                dirty_items
 2449            };
 2450
 2451            for (pane, item) in dirty_items {
 2452                let (singleton, project_entry_ids) =
 2453                    cx.update(|_, cx| (item.is_singleton(cx), item.project_entry_ids(cx)))?;
 2454                if singleton || !project_entry_ids.is_empty() {
 2455                    if !Pane::save_item(project.clone(), &pane, &*item, save_intent, cx).await? {
 2456                        return Ok(false);
 2457                    }
 2458                }
 2459            }
 2460            Ok(true)
 2461        })
 2462    }
 2463
 2464    pub fn open_workspace_for_paths(
 2465        &mut self,
 2466        replace_current_window: bool,
 2467        paths: Vec<PathBuf>,
 2468        window: &mut Window,
 2469        cx: &mut Context<Self>,
 2470    ) -> Task<Result<()>> {
 2471        let window_handle = window.window_handle().downcast::<Self>();
 2472        let is_remote = self.project.read(cx).is_via_collab();
 2473        let has_worktree = self.project.read(cx).worktrees(cx).next().is_some();
 2474        let has_dirty_items = self.items(cx).any(|item| item.is_dirty(cx));
 2475
 2476        let window_to_replace = if replace_current_window {
 2477            window_handle
 2478        } else if is_remote || has_worktree || has_dirty_items {
 2479            None
 2480        } else {
 2481            window_handle
 2482        };
 2483        let app_state = self.app_state.clone();
 2484
 2485        cx.spawn(async move |_, cx| {
 2486            cx.update(|cx| {
 2487                open_paths(
 2488                    &paths,
 2489                    app_state,
 2490                    OpenOptions {
 2491                        replace_window: window_to_replace,
 2492                        ..Default::default()
 2493                    },
 2494                    cx,
 2495                )
 2496            })?
 2497            .await?;
 2498            Ok(())
 2499        })
 2500    }
 2501
 2502    #[allow(clippy::type_complexity)]
 2503    pub fn open_paths(
 2504        &mut self,
 2505        mut abs_paths: Vec<PathBuf>,
 2506        options: OpenOptions,
 2507        pane: Option<WeakEntity<Pane>>,
 2508        window: &mut Window,
 2509        cx: &mut Context<Self>,
 2510    ) -> Task<Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>> {
 2511        log::info!("open paths {abs_paths:?}");
 2512
 2513        let fs = self.app_state.fs.clone();
 2514
 2515        // Sort the paths to ensure we add worktrees for parents before their children.
 2516        abs_paths.sort_unstable();
 2517        cx.spawn_in(window, async move |this, cx| {
 2518            let mut tasks = Vec::with_capacity(abs_paths.len());
 2519
 2520            for abs_path in &abs_paths {
 2521                let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
 2522                    OpenVisible::All => Some(true),
 2523                    OpenVisible::None => Some(false),
 2524                    OpenVisible::OnlyFiles => match fs.metadata(abs_path).await.log_err() {
 2525                        Some(Some(metadata)) => Some(!metadata.is_dir),
 2526                        Some(None) => Some(true),
 2527                        None => None,
 2528                    },
 2529                    OpenVisible::OnlyDirectories => match fs.metadata(abs_path).await.log_err() {
 2530                        Some(Some(metadata)) => Some(metadata.is_dir),
 2531                        Some(None) => Some(false),
 2532                        None => None,
 2533                    },
 2534                };
 2535                let project_path = match visible {
 2536                    Some(visible) => match this
 2537                        .update(cx, |this, cx| {
 2538                            Workspace::project_path_for_path(
 2539                                this.project.clone(),
 2540                                abs_path,
 2541                                visible,
 2542                                cx,
 2543                            )
 2544                        })
 2545                        .log_err()
 2546                    {
 2547                        Some(project_path) => project_path.await.log_err(),
 2548                        None => None,
 2549                    },
 2550                    None => None,
 2551                };
 2552
 2553                let this = this.clone();
 2554                let abs_path: Arc<Path> = SanitizedPath::from(abs_path.clone()).into();
 2555                let fs = fs.clone();
 2556                let pane = pane.clone();
 2557                let task = cx.spawn(async move |cx| {
 2558                    let (worktree, project_path) = project_path?;
 2559                    if fs.is_dir(&abs_path).await {
 2560                        this.update(cx, |workspace, cx| {
 2561                            let worktree = worktree.read(cx);
 2562                            let worktree_abs_path = worktree.abs_path();
 2563                            let entry_id = if abs_path.as_ref() == worktree_abs_path.as_ref() {
 2564                                worktree.root_entry()
 2565                            } else {
 2566                                abs_path
 2567                                    .strip_prefix(worktree_abs_path.as_ref())
 2568                                    .ok()
 2569                                    .and_then(|relative_path| {
 2570                                        worktree.entry_for_path(relative_path)
 2571                                    })
 2572                            }
 2573                            .map(|entry| entry.id);
 2574                            if let Some(entry_id) = entry_id {
 2575                                workspace.project.update(cx, |_, cx| {
 2576                                    cx.emit(project::Event::ActiveEntryChanged(Some(entry_id)));
 2577                                })
 2578                            }
 2579                        })
 2580                        .ok()?;
 2581                        None
 2582                    } else {
 2583                        Some(
 2584                            this.update_in(cx, |this, window, cx| {
 2585                                this.open_path(
 2586                                    project_path,
 2587                                    pane,
 2588                                    options.focus.unwrap_or(true),
 2589                                    window,
 2590                                    cx,
 2591                                )
 2592                            })
 2593                            .ok()?
 2594                            .await,
 2595                        )
 2596                    }
 2597                });
 2598                tasks.push(task);
 2599            }
 2600
 2601            futures::future::join_all(tasks).await
 2602        })
 2603    }
 2604
 2605    pub fn open_resolved_path(
 2606        &mut self,
 2607        path: ResolvedPath,
 2608        window: &mut Window,
 2609        cx: &mut Context<Self>,
 2610    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 2611        match path {
 2612            ResolvedPath::ProjectPath { project_path, .. } => {
 2613                self.open_path(project_path, None, true, window, cx)
 2614            }
 2615            ResolvedPath::AbsPath { path, .. } => self.open_abs_path(
 2616                path,
 2617                OpenOptions {
 2618                    visible: Some(OpenVisible::None),
 2619                    ..Default::default()
 2620                },
 2621                window,
 2622                cx,
 2623            ),
 2624        }
 2625    }
 2626
 2627    pub fn absolute_path_of_worktree(
 2628        &self,
 2629        worktree_id: WorktreeId,
 2630        cx: &mut Context<Self>,
 2631    ) -> Option<PathBuf> {
 2632        self.project
 2633            .read(cx)
 2634            .worktree_for_id(worktree_id, cx)
 2635            // TODO: use `abs_path` or `root_dir`
 2636            .map(|wt| wt.read(cx).abs_path().as_ref().to_path_buf())
 2637    }
 2638
 2639    fn add_folder_to_project(
 2640        &mut self,
 2641        _: &AddFolderToProject,
 2642        window: &mut Window,
 2643        cx: &mut Context<Self>,
 2644    ) {
 2645        let project = self.project.read(cx);
 2646        if project.is_via_collab() {
 2647            self.show_error(
 2648                &anyhow!("You cannot add folders to someone else's project"),
 2649                cx,
 2650            );
 2651            return;
 2652        }
 2653        let paths = self.prompt_for_open_path(
 2654            PathPromptOptions {
 2655                files: false,
 2656                directories: true,
 2657                multiple: true,
 2658            },
 2659            DirectoryLister::Project(self.project.clone()),
 2660            window,
 2661            cx,
 2662        );
 2663        cx.spawn_in(window, async move |this, cx| {
 2664            if let Some(paths) = paths.await.log_err().flatten() {
 2665                let results = this
 2666                    .update_in(cx, |this, window, cx| {
 2667                        this.open_paths(
 2668                            paths,
 2669                            OpenOptions {
 2670                                visible: Some(OpenVisible::All),
 2671                                ..Default::default()
 2672                            },
 2673                            None,
 2674                            window,
 2675                            cx,
 2676                        )
 2677                    })?
 2678                    .await;
 2679                for result in results.into_iter().flatten() {
 2680                    result.log_err();
 2681                }
 2682            }
 2683            anyhow::Ok(())
 2684        })
 2685        .detach_and_log_err(cx);
 2686    }
 2687
 2688    pub fn project_path_for_path(
 2689        project: Entity<Project>,
 2690        abs_path: &Path,
 2691        visible: bool,
 2692        cx: &mut App,
 2693    ) -> Task<Result<(Entity<Worktree>, ProjectPath)>> {
 2694        let entry = project.update(cx, |project, cx| {
 2695            project.find_or_create_worktree(abs_path, visible, cx)
 2696        });
 2697        cx.spawn(async move |cx| {
 2698            let (worktree, path) = entry.await?;
 2699            let worktree_id = worktree.read_with(cx, |t, _| t.id())?;
 2700            Ok((
 2701                worktree,
 2702                ProjectPath {
 2703                    worktree_id,
 2704                    path: path.into(),
 2705                },
 2706            ))
 2707        })
 2708    }
 2709
 2710    pub fn items<'a>(&'a self, cx: &'a App) -> impl 'a + Iterator<Item = &'a Box<dyn ItemHandle>> {
 2711        self.panes.iter().flat_map(|pane| pane.read(cx).items())
 2712    }
 2713
 2714    pub fn item_of_type<T: Item>(&self, cx: &App) -> Option<Entity<T>> {
 2715        self.items_of_type(cx).max_by_key(|item| item.item_id())
 2716    }
 2717
 2718    pub fn items_of_type<'a, T: Item>(
 2719        &'a self,
 2720        cx: &'a App,
 2721    ) -> impl 'a + Iterator<Item = Entity<T>> {
 2722        self.panes
 2723            .iter()
 2724            .flat_map(|pane| pane.read(cx).items_of_type())
 2725    }
 2726
 2727    pub fn active_item(&self, cx: &App) -> Option<Box<dyn ItemHandle>> {
 2728        self.active_pane().read(cx).active_item()
 2729    }
 2730
 2731    pub fn active_item_as<I: 'static>(&self, cx: &App) -> Option<Entity<I>> {
 2732        let item = self.active_item(cx)?;
 2733        item.to_any().downcast::<I>().ok()
 2734    }
 2735
 2736    fn active_project_path(&self, cx: &App) -> Option<ProjectPath> {
 2737        self.active_item(cx).and_then(|item| item.project_path(cx))
 2738    }
 2739
 2740    pub fn most_recent_active_path(&self, cx: &App) -> Option<PathBuf> {
 2741        self.recent_navigation_history_iter(cx)
 2742            .filter_map(|(path, abs_path)| {
 2743                let worktree = self
 2744                    .project
 2745                    .read(cx)
 2746                    .worktree_for_id(path.worktree_id, cx)?;
 2747                if worktree.read(cx).is_visible() {
 2748                    abs_path
 2749                } else {
 2750                    None
 2751                }
 2752            })
 2753            .next()
 2754    }
 2755
 2756    pub fn save_active_item(
 2757        &mut self,
 2758        save_intent: SaveIntent,
 2759        window: &mut Window,
 2760        cx: &mut App,
 2761    ) -> Task<Result<()>> {
 2762        let project = self.project.clone();
 2763        let pane = self.active_pane();
 2764        let item = pane.read(cx).active_item();
 2765        let pane = pane.downgrade();
 2766
 2767        window.spawn(cx, async move |mut cx| {
 2768            if let Some(item) = item {
 2769                Pane::save_item(project, &pane, item.as_ref(), save_intent, &mut cx)
 2770                    .await
 2771                    .map(|_| ())
 2772            } else {
 2773                Ok(())
 2774            }
 2775        })
 2776    }
 2777
 2778    pub fn close_inactive_items_and_panes(
 2779        &mut self,
 2780        action: &CloseInactiveTabsAndPanes,
 2781        window: &mut Window,
 2782        cx: &mut Context<Self>,
 2783    ) {
 2784        if let Some(task) = self.close_all_internal(
 2785            true,
 2786            action.save_intent.unwrap_or(SaveIntent::Close),
 2787            window,
 2788            cx,
 2789        ) {
 2790            task.detach_and_log_err(cx)
 2791        }
 2792    }
 2793
 2794    pub fn close_all_items_and_panes(
 2795        &mut self,
 2796        action: &CloseAllItemsAndPanes,
 2797        window: &mut Window,
 2798        cx: &mut Context<Self>,
 2799    ) {
 2800        if let Some(task) = self.close_all_internal(
 2801            false,
 2802            action.save_intent.unwrap_or(SaveIntent::Close),
 2803            window,
 2804            cx,
 2805        ) {
 2806            task.detach_and_log_err(cx)
 2807        }
 2808    }
 2809
 2810    fn close_all_internal(
 2811        &mut self,
 2812        retain_active_pane: bool,
 2813        save_intent: SaveIntent,
 2814        window: &mut Window,
 2815        cx: &mut Context<Self>,
 2816    ) -> Option<Task<Result<()>>> {
 2817        let current_pane = self.active_pane();
 2818
 2819        let mut tasks = Vec::new();
 2820
 2821        if retain_active_pane {
 2822            let current_pane_close = current_pane.update(cx, |pane, cx| {
 2823                pane.close_other_items(
 2824                    &CloseOtherItems {
 2825                        save_intent: None,
 2826                        close_pinned: false,
 2827                    },
 2828                    None,
 2829                    window,
 2830                    cx,
 2831                )
 2832            });
 2833
 2834            tasks.push(current_pane_close);
 2835        }
 2836
 2837        for pane in self.panes() {
 2838            if retain_active_pane && pane.entity_id() == current_pane.entity_id() {
 2839                continue;
 2840            }
 2841
 2842            let close_pane_items = pane.update(cx, |pane: &mut Pane, cx| {
 2843                pane.close_all_items(
 2844                    &CloseAllItems {
 2845                        save_intent: Some(save_intent),
 2846                        close_pinned: false,
 2847                    },
 2848                    window,
 2849                    cx,
 2850                )
 2851            });
 2852
 2853            tasks.push(close_pane_items)
 2854        }
 2855
 2856        if tasks.is_empty() {
 2857            None
 2858        } else {
 2859            Some(cx.spawn_in(window, async move |_, _| {
 2860                for task in tasks {
 2861                    task.await?
 2862                }
 2863                Ok(())
 2864            }))
 2865        }
 2866    }
 2867
 2868    pub fn is_dock_at_position_open(&self, position: DockPosition, cx: &mut Context<Self>) -> bool {
 2869        self.dock_at_position(position).read(cx).is_open()
 2870    }
 2871
 2872    pub fn toggle_dock(
 2873        &mut self,
 2874        dock_side: DockPosition,
 2875        window: &mut Window,
 2876        cx: &mut Context<Self>,
 2877    ) {
 2878        let dock = self.dock_at_position(dock_side);
 2879        let mut focus_center = false;
 2880        let mut reveal_dock = false;
 2881        dock.update(cx, |dock, cx| {
 2882            let other_is_zoomed = self.zoomed.is_some() && self.zoomed_position != Some(dock_side);
 2883            let was_visible = dock.is_open() && !other_is_zoomed;
 2884            dock.set_open(!was_visible, window, cx);
 2885
 2886            if dock.active_panel().is_none() {
 2887                let Some(panel_ix) = dock
 2888                    .first_enabled_panel_idx(cx)
 2889                    .log_with_level(log::Level::Info)
 2890                else {
 2891                    return;
 2892                };
 2893                dock.activate_panel(panel_ix, window, cx);
 2894            }
 2895
 2896            if let Some(active_panel) = dock.active_panel() {
 2897                if was_visible {
 2898                    if active_panel
 2899                        .panel_focus_handle(cx)
 2900                        .contains_focused(window, cx)
 2901                    {
 2902                        focus_center = true;
 2903                    }
 2904                } else {
 2905                    let focus_handle = &active_panel.panel_focus_handle(cx);
 2906                    window.focus(focus_handle);
 2907                    reveal_dock = true;
 2908                }
 2909            }
 2910        });
 2911
 2912        if reveal_dock {
 2913            self.dismiss_zoomed_items_to_reveal(Some(dock_side), window, cx);
 2914        }
 2915
 2916        if focus_center {
 2917            self.active_pane
 2918                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 2919        }
 2920
 2921        cx.notify();
 2922        self.serialize_workspace(window, cx);
 2923    }
 2924
 2925    fn active_dock(&self, window: &Window, cx: &Context<Self>) -> Option<&Entity<Dock>> {
 2926        self.all_docks().into_iter().find(|&dock| {
 2927            dock.read(cx).is_open() && dock.focus_handle(cx).contains_focused(window, cx)
 2928        })
 2929    }
 2930
 2931    fn close_active_dock(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
 2932        if let Some(dock) = self.active_dock(window, cx) {
 2933            dock.update(cx, |dock, cx| {
 2934                dock.set_open(false, window, cx);
 2935            });
 2936            return true;
 2937        }
 2938        false
 2939    }
 2940
 2941    pub fn close_all_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 2942        for dock in self.all_docks() {
 2943            dock.update(cx, |dock, cx| {
 2944                dock.set_open(false, window, cx);
 2945            });
 2946        }
 2947
 2948        cx.focus_self(window);
 2949        cx.notify();
 2950        self.serialize_workspace(window, cx);
 2951    }
 2952
 2953    /// Transfer focus to the panel of the given type.
 2954    pub fn focus_panel<T: Panel>(
 2955        &mut self,
 2956        window: &mut Window,
 2957        cx: &mut Context<Self>,
 2958    ) -> Option<Entity<T>> {
 2959        let panel = self.focus_or_unfocus_panel::<T>(window, cx, |_, _, _| true)?;
 2960        panel.to_any().downcast().ok()
 2961    }
 2962
 2963    /// Focus the panel of the given type if it isn't already focused. If it is
 2964    /// already focused, then transfer focus back to the workspace center.
 2965    pub fn toggle_panel_focus<T: Panel>(
 2966        &mut self,
 2967        window: &mut Window,
 2968        cx: &mut Context<Self>,
 2969    ) -> bool {
 2970        let mut did_focus_panel = false;
 2971        self.focus_or_unfocus_panel::<T>(window, cx, |panel, window, cx| {
 2972            did_focus_panel = !panel.panel_focus_handle(cx).contains_focused(window, cx);
 2973            did_focus_panel
 2974        });
 2975        did_focus_panel
 2976    }
 2977
 2978    pub fn activate_panel_for_proto_id(
 2979        &mut self,
 2980        panel_id: PanelId,
 2981        window: &mut Window,
 2982        cx: &mut Context<Self>,
 2983    ) -> Option<Arc<dyn PanelHandle>> {
 2984        let mut panel = None;
 2985        for dock in self.all_docks() {
 2986            if let Some(panel_index) = dock.read(cx).panel_index_for_proto_id(panel_id) {
 2987                panel = dock.update(cx, |dock, cx| {
 2988                    dock.activate_panel(panel_index, window, cx);
 2989                    dock.set_open(true, window, cx);
 2990                    dock.active_panel().cloned()
 2991                });
 2992                break;
 2993            }
 2994        }
 2995
 2996        if panel.is_some() {
 2997            cx.notify();
 2998            self.serialize_workspace(window, cx);
 2999        }
 3000
 3001        panel
 3002    }
 3003
 3004    /// Focus or unfocus the given panel type, depending on the given callback.
 3005    fn focus_or_unfocus_panel<T: Panel>(
 3006        &mut self,
 3007        window: &mut Window,
 3008        cx: &mut Context<Self>,
 3009        mut should_focus: impl FnMut(&dyn PanelHandle, &mut Window, &mut Context<Dock>) -> bool,
 3010    ) -> Option<Arc<dyn PanelHandle>> {
 3011        let mut result_panel = None;
 3012        let mut serialize = false;
 3013        for dock in self.all_docks() {
 3014            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3015                let mut focus_center = false;
 3016                let panel = dock.update(cx, |dock, cx| {
 3017                    dock.activate_panel(panel_index, window, cx);
 3018
 3019                    let panel = dock.active_panel().cloned();
 3020                    if let Some(panel) = panel.as_ref() {
 3021                        if should_focus(&**panel, window, cx) {
 3022                            dock.set_open(true, window, cx);
 3023                            panel.panel_focus_handle(cx).focus(window);
 3024                        } else {
 3025                            focus_center = true;
 3026                        }
 3027                    }
 3028                    panel
 3029                });
 3030
 3031                if focus_center {
 3032                    self.active_pane
 3033                        .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3034                }
 3035
 3036                result_panel = panel;
 3037                serialize = true;
 3038                break;
 3039            }
 3040        }
 3041
 3042        if serialize {
 3043            self.serialize_workspace(window, cx);
 3044        }
 3045
 3046        cx.notify();
 3047        result_panel
 3048    }
 3049
 3050    /// Open the panel of the given type
 3051    pub fn open_panel<T: Panel>(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3052        for dock in self.all_docks() {
 3053            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3054                dock.update(cx, |dock, cx| {
 3055                    dock.activate_panel(panel_index, window, cx);
 3056                    dock.set_open(true, window, cx);
 3057                });
 3058            }
 3059        }
 3060    }
 3061
 3062    pub fn panel<T: Panel>(&self, cx: &App) -> Option<Entity<T>> {
 3063        self.all_docks()
 3064            .iter()
 3065            .find_map(|dock| dock.read(cx).panel::<T>())
 3066    }
 3067
 3068    fn dismiss_zoomed_items_to_reveal(
 3069        &mut self,
 3070        dock_to_reveal: Option<DockPosition>,
 3071        window: &mut Window,
 3072        cx: &mut Context<Self>,
 3073    ) {
 3074        // If a center pane is zoomed, unzoom it.
 3075        for pane in &self.panes {
 3076            if pane != &self.active_pane || dock_to_reveal.is_some() {
 3077                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 3078            }
 3079        }
 3080
 3081        // If another dock is zoomed, hide it.
 3082        let mut focus_center = false;
 3083        for dock in self.all_docks() {
 3084            dock.update(cx, |dock, cx| {
 3085                if Some(dock.position()) != dock_to_reveal {
 3086                    if let Some(panel) = dock.active_panel() {
 3087                        if panel.is_zoomed(window, cx) {
 3088                            focus_center |=
 3089                                panel.panel_focus_handle(cx).contains_focused(window, cx);
 3090                            dock.set_open(false, window, cx);
 3091                        }
 3092                    }
 3093                }
 3094            });
 3095        }
 3096
 3097        if focus_center {
 3098            self.active_pane
 3099                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3100        }
 3101
 3102        if self.zoomed_position != dock_to_reveal {
 3103            self.zoomed = None;
 3104            self.zoomed_position = None;
 3105            cx.emit(Event::ZoomChanged);
 3106        }
 3107
 3108        cx.notify();
 3109    }
 3110
 3111    fn add_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 3112        let pane = cx.new(|cx| {
 3113            let mut pane = Pane::new(
 3114                self.weak_handle(),
 3115                self.project.clone(),
 3116                self.pane_history_timestamp.clone(),
 3117                None,
 3118                NewFile.boxed_clone(),
 3119                window,
 3120                cx,
 3121            );
 3122            pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 3123            pane
 3124        });
 3125        cx.subscribe_in(&pane, window, Self::handle_pane_event)
 3126            .detach();
 3127        self.panes.push(pane.clone());
 3128
 3129        window.focus(&pane.focus_handle(cx));
 3130
 3131        cx.emit(Event::PaneAdded(pane.clone()));
 3132        pane
 3133    }
 3134
 3135    pub fn add_item_to_center(
 3136        &mut self,
 3137        item: Box<dyn ItemHandle>,
 3138        window: &mut Window,
 3139        cx: &mut Context<Self>,
 3140    ) -> bool {
 3141        if let Some(center_pane) = self.last_active_center_pane.clone() {
 3142            if let Some(center_pane) = center_pane.upgrade() {
 3143                center_pane.update(cx, |pane, cx| {
 3144                    pane.add_item(item, true, true, None, window, cx)
 3145                });
 3146                true
 3147            } else {
 3148                false
 3149            }
 3150        } else {
 3151            false
 3152        }
 3153    }
 3154
 3155    pub fn add_item_to_active_pane(
 3156        &mut self,
 3157        item: Box<dyn ItemHandle>,
 3158        destination_index: Option<usize>,
 3159        focus_item: bool,
 3160        window: &mut Window,
 3161        cx: &mut App,
 3162    ) {
 3163        self.add_item(
 3164            self.active_pane.clone(),
 3165            item,
 3166            destination_index,
 3167            false,
 3168            focus_item,
 3169            window,
 3170            cx,
 3171        )
 3172    }
 3173
 3174    pub fn add_item(
 3175        &mut self,
 3176        pane: Entity<Pane>,
 3177        item: Box<dyn ItemHandle>,
 3178        destination_index: Option<usize>,
 3179        activate_pane: bool,
 3180        focus_item: bool,
 3181        window: &mut Window,
 3182        cx: &mut App,
 3183    ) {
 3184        if let Some(text) = item.telemetry_event_text(cx) {
 3185            telemetry::event!(text);
 3186        }
 3187
 3188        pane.update(cx, |pane, cx| {
 3189            pane.add_item(
 3190                item,
 3191                activate_pane,
 3192                focus_item,
 3193                destination_index,
 3194                window,
 3195                cx,
 3196            )
 3197        });
 3198    }
 3199
 3200    pub fn split_item(
 3201        &mut self,
 3202        split_direction: SplitDirection,
 3203        item: Box<dyn ItemHandle>,
 3204        window: &mut Window,
 3205        cx: &mut Context<Self>,
 3206    ) {
 3207        let new_pane = self.split_pane(self.active_pane.clone(), split_direction, window, cx);
 3208        self.add_item(new_pane, item, None, true, true, window, cx);
 3209    }
 3210
 3211    pub fn open_abs_path(
 3212        &mut self,
 3213        abs_path: PathBuf,
 3214        options: OpenOptions,
 3215        window: &mut Window,
 3216        cx: &mut Context<Self>,
 3217    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3218        cx.spawn_in(window, async move |workspace, cx| {
 3219            let open_paths_task_result = workspace
 3220                .update_in(cx, |workspace, window, cx| {
 3221                    workspace.open_paths(vec![abs_path.clone()], options, None, window, cx)
 3222                })
 3223                .with_context(|| format!("open abs path {abs_path:?} task spawn"))?
 3224                .await;
 3225            anyhow::ensure!(
 3226                open_paths_task_result.len() == 1,
 3227                "open abs path {abs_path:?} task returned incorrect number of results"
 3228            );
 3229            match open_paths_task_result
 3230                .into_iter()
 3231                .next()
 3232                .expect("ensured single task result")
 3233            {
 3234                Some(open_result) => {
 3235                    open_result.with_context(|| format!("open abs path {abs_path:?} task join"))
 3236                }
 3237                None => anyhow::bail!("open abs path {abs_path:?} task returned None"),
 3238            }
 3239        })
 3240    }
 3241
 3242    pub fn split_abs_path(
 3243        &mut self,
 3244        abs_path: PathBuf,
 3245        visible: bool,
 3246        window: &mut Window,
 3247        cx: &mut Context<Self>,
 3248    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3249        let project_path_task =
 3250            Workspace::project_path_for_path(self.project.clone(), &abs_path, visible, cx);
 3251        cx.spawn_in(window, async move |this, cx| {
 3252            let (_, path) = project_path_task.await?;
 3253            this.update_in(cx, |this, window, cx| this.split_path(path, window, cx))?
 3254                .await
 3255        })
 3256    }
 3257
 3258    pub fn open_path(
 3259        &mut self,
 3260        path: impl Into<ProjectPath>,
 3261        pane: Option<WeakEntity<Pane>>,
 3262        focus_item: bool,
 3263        window: &mut Window,
 3264        cx: &mut App,
 3265    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3266        self.open_path_preview(path, pane, focus_item, false, true, window, cx)
 3267    }
 3268
 3269    pub fn open_path_preview(
 3270        &mut self,
 3271        path: impl Into<ProjectPath>,
 3272        pane: Option<WeakEntity<Pane>>,
 3273        focus_item: bool,
 3274        allow_preview: bool,
 3275        activate: bool,
 3276        window: &mut Window,
 3277        cx: &mut App,
 3278    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3279        let pane = pane.unwrap_or_else(|| {
 3280            self.last_active_center_pane.clone().unwrap_or_else(|| {
 3281                self.panes
 3282                    .first()
 3283                    .expect("There must be an active pane")
 3284                    .downgrade()
 3285            })
 3286        });
 3287
 3288        let project_path = path.into();
 3289        let task = self.load_path(project_path.clone(), window, cx);
 3290        window.spawn(cx, async move |cx| {
 3291            let (project_entry_id, build_item) = task.await?;
 3292            let result = pane.update_in(cx, |pane, window, cx| {
 3293                pane.open_item(
 3294                    project_entry_id,
 3295                    project_path,
 3296                    focus_item,
 3297                    allow_preview,
 3298                    activate,
 3299                    None,
 3300                    window,
 3301                    cx,
 3302                    build_item,
 3303                )
 3304            });
 3305            result
 3306        })
 3307    }
 3308
 3309    pub fn split_path(
 3310        &mut self,
 3311        path: impl Into<ProjectPath>,
 3312        window: &mut Window,
 3313        cx: &mut Context<Self>,
 3314    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3315        self.split_path_preview(path, false, None, window, cx)
 3316    }
 3317
 3318    pub fn split_path_preview(
 3319        &mut self,
 3320        path: impl Into<ProjectPath>,
 3321        allow_preview: bool,
 3322        split_direction: Option<SplitDirection>,
 3323        window: &mut Window,
 3324        cx: &mut Context<Self>,
 3325    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3326        let pane = self.last_active_center_pane.clone().unwrap_or_else(|| {
 3327            self.panes
 3328                .first()
 3329                .expect("There must be an active pane")
 3330                .downgrade()
 3331        });
 3332
 3333        if let Member::Pane(center_pane) = &self.center.root {
 3334            if center_pane.read(cx).items_len() == 0 {
 3335                return self.open_path(path, Some(pane), true, window, cx);
 3336            }
 3337        }
 3338
 3339        let project_path = path.into();
 3340        let task = self.load_path(project_path.clone(), window, cx);
 3341        cx.spawn_in(window, async move |this, cx| {
 3342            let (project_entry_id, build_item) = task.await?;
 3343            this.update_in(cx, move |this, window, cx| -> Option<_> {
 3344                let pane = pane.upgrade()?;
 3345                let new_pane = this.split_pane(
 3346                    pane,
 3347                    split_direction.unwrap_or(SplitDirection::Right),
 3348                    window,
 3349                    cx,
 3350                );
 3351                new_pane.update(cx, |new_pane, cx| {
 3352                    Some(new_pane.open_item(
 3353                        project_entry_id,
 3354                        project_path,
 3355                        true,
 3356                        allow_preview,
 3357                        true,
 3358                        None,
 3359                        window,
 3360                        cx,
 3361                        build_item,
 3362                    ))
 3363                })
 3364            })
 3365            .map(|option| option.context("pane was dropped"))?
 3366        })
 3367    }
 3368
 3369    fn load_path(
 3370        &mut self,
 3371        path: ProjectPath,
 3372        window: &mut Window,
 3373        cx: &mut App,
 3374    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
 3375        let project = self.project().clone();
 3376        let registry = cx.default_global::<ProjectItemRegistry>().clone();
 3377        registry.open_path(&project, &path, window, cx)
 3378    }
 3379
 3380    pub fn find_project_item<T>(
 3381        &self,
 3382        pane: &Entity<Pane>,
 3383        project_item: &Entity<T::Item>,
 3384        cx: &App,
 3385    ) -> Option<Entity<T>>
 3386    where
 3387        T: ProjectItem,
 3388    {
 3389        use project::ProjectItem as _;
 3390        let project_item = project_item.read(cx);
 3391        let entry_id = project_item.entry_id(cx);
 3392        let project_path = project_item.project_path(cx);
 3393
 3394        let mut item = None;
 3395        if let Some(entry_id) = entry_id {
 3396            item = pane.read(cx).item_for_entry(entry_id, cx);
 3397        }
 3398        if item.is_none() {
 3399            if let Some(project_path) = project_path {
 3400                item = pane.read(cx).item_for_path(project_path, cx);
 3401            }
 3402        }
 3403
 3404        item.and_then(|item| item.downcast::<T>())
 3405    }
 3406
 3407    pub fn is_project_item_open<T>(
 3408        &self,
 3409        pane: &Entity<Pane>,
 3410        project_item: &Entity<T::Item>,
 3411        cx: &App,
 3412    ) -> bool
 3413    where
 3414        T: ProjectItem,
 3415    {
 3416        self.find_project_item::<T>(pane, project_item, cx)
 3417            .is_some()
 3418    }
 3419
 3420    pub fn open_project_item<T>(
 3421        &mut self,
 3422        pane: Entity<Pane>,
 3423        project_item: Entity<T::Item>,
 3424        activate_pane: bool,
 3425        focus_item: bool,
 3426        window: &mut Window,
 3427        cx: &mut Context<Self>,
 3428    ) -> Entity<T>
 3429    where
 3430        T: ProjectItem,
 3431    {
 3432        if let Some(item) = self.find_project_item(&pane, &project_item, cx) {
 3433            self.activate_item(&item, activate_pane, focus_item, window, cx);
 3434            return item;
 3435        }
 3436
 3437        let item = pane.update(cx, |pane, cx| {
 3438            cx.new(|cx| {
 3439                T::for_project_item(self.project().clone(), Some(pane), project_item, window, cx)
 3440            })
 3441        });
 3442        let item_id = item.item_id();
 3443        let mut destination_index = None;
 3444        pane.update(cx, |pane, cx| {
 3445            if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation {
 3446                if let Some(preview_item_id) = pane.preview_item_id() {
 3447                    if preview_item_id != item_id {
 3448                        destination_index = pane.close_current_preview_item(window, cx);
 3449                    }
 3450                }
 3451            }
 3452            pane.set_preview_item_id(Some(item.item_id()), cx)
 3453        });
 3454
 3455        self.add_item(
 3456            pane,
 3457            Box::new(item.clone()),
 3458            destination_index,
 3459            activate_pane,
 3460            focus_item,
 3461            window,
 3462            cx,
 3463        );
 3464        item
 3465    }
 3466
 3467    pub fn open_shared_screen(
 3468        &mut self,
 3469        peer_id: PeerId,
 3470        window: &mut Window,
 3471        cx: &mut Context<Self>,
 3472    ) {
 3473        if let Some(shared_screen) =
 3474            self.shared_screen_for_peer(peer_id, &self.active_pane, window, cx)
 3475        {
 3476            self.active_pane.update(cx, |pane, cx| {
 3477                pane.add_item(Box::new(shared_screen), false, true, None, window, cx)
 3478            });
 3479        }
 3480    }
 3481
 3482    pub fn activate_item(
 3483        &mut self,
 3484        item: &dyn ItemHandle,
 3485        activate_pane: bool,
 3486        focus_item: bool,
 3487        window: &mut Window,
 3488        cx: &mut App,
 3489    ) -> bool {
 3490        let result = self.panes.iter().find_map(|pane| {
 3491            pane.read(cx)
 3492                .index_for_item(item)
 3493                .map(|ix| (pane.clone(), ix))
 3494        });
 3495        if let Some((pane, ix)) = result {
 3496            pane.update(cx, |pane, cx| {
 3497                pane.activate_item(ix, activate_pane, focus_item, window, cx)
 3498            });
 3499            true
 3500        } else {
 3501            false
 3502        }
 3503    }
 3504
 3505    fn activate_pane_at_index(
 3506        &mut self,
 3507        action: &ActivatePane,
 3508        window: &mut Window,
 3509        cx: &mut Context<Self>,
 3510    ) {
 3511        let panes = self.center.panes();
 3512        if let Some(pane) = panes.get(action.0).map(|p| (*p).clone()) {
 3513            window.focus(&pane.focus_handle(cx));
 3514        } else {
 3515            self.split_and_clone(self.active_pane.clone(), SplitDirection::Right, window, cx);
 3516        }
 3517    }
 3518
 3519    fn move_item_to_pane_at_index(
 3520        &mut self,
 3521        action: &MoveItemToPane,
 3522        window: &mut Window,
 3523        cx: &mut Context<Self>,
 3524    ) {
 3525        let panes = self.center.panes();
 3526        let destination = match panes.get(action.destination) {
 3527            Some(&destination) => destination.clone(),
 3528            None => {
 3529                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3530                    return;
 3531                }
 3532                let direction = SplitDirection::Right;
 3533                let split_off_pane = self
 3534                    .find_pane_in_direction(direction, cx)
 3535                    .unwrap_or_else(|| self.active_pane.clone());
 3536                let new_pane = self.add_pane(window, cx);
 3537                if self
 3538                    .center
 3539                    .split(&split_off_pane, &new_pane, direction)
 3540                    .log_err()
 3541                    .is_none()
 3542                {
 3543                    return;
 3544                };
 3545                new_pane
 3546            }
 3547        };
 3548
 3549        if action.clone {
 3550            clone_active_item(
 3551                self.database_id(),
 3552                &self.active_pane,
 3553                &destination,
 3554                action.focus,
 3555                window,
 3556                cx,
 3557            )
 3558        } else {
 3559            move_active_item(
 3560                &self.active_pane,
 3561                &destination,
 3562                action.focus,
 3563                true,
 3564                window,
 3565                cx,
 3566            )
 3567        }
 3568    }
 3569
 3570    pub fn activate_next_pane(&mut self, window: &mut Window, cx: &mut App) {
 3571        let panes = self.center.panes();
 3572        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3573            let next_ix = (ix + 1) % panes.len();
 3574            let next_pane = panes[next_ix].clone();
 3575            window.focus(&next_pane.focus_handle(cx));
 3576        }
 3577    }
 3578
 3579    pub fn activate_previous_pane(&mut self, window: &mut Window, cx: &mut App) {
 3580        let panes = self.center.panes();
 3581        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3582            let prev_ix = cmp::min(ix.wrapping_sub(1), panes.len() - 1);
 3583            let prev_pane = panes[prev_ix].clone();
 3584            window.focus(&prev_pane.focus_handle(cx));
 3585        }
 3586    }
 3587
 3588    pub fn activate_pane_in_direction(
 3589        &mut self,
 3590        direction: SplitDirection,
 3591        window: &mut Window,
 3592        cx: &mut App,
 3593    ) {
 3594        use ActivateInDirectionTarget as Target;
 3595        enum Origin {
 3596            LeftDock,
 3597            RightDock,
 3598            BottomDock,
 3599            Center,
 3600        }
 3601
 3602        let origin: Origin = [
 3603            (&self.left_dock, Origin::LeftDock),
 3604            (&self.right_dock, Origin::RightDock),
 3605            (&self.bottom_dock, Origin::BottomDock),
 3606        ]
 3607        .into_iter()
 3608        .find_map(|(dock, origin)| {
 3609            if dock.focus_handle(cx).contains_focused(window, cx) && dock.read(cx).is_open() {
 3610                Some(origin)
 3611            } else {
 3612                None
 3613            }
 3614        })
 3615        .unwrap_or(Origin::Center);
 3616
 3617        let get_last_active_pane = || {
 3618            let pane = self
 3619                .last_active_center_pane
 3620                .clone()
 3621                .unwrap_or_else(|| {
 3622                    self.panes
 3623                        .first()
 3624                        .expect("There must be an active pane")
 3625                        .downgrade()
 3626                })
 3627                .upgrade()?;
 3628            (pane.read(cx).items_len() != 0).then_some(pane)
 3629        };
 3630
 3631        let try_dock =
 3632            |dock: &Entity<Dock>| dock.read(cx).is_open().then(|| Target::Dock(dock.clone()));
 3633
 3634        let target = match (origin, direction) {
 3635            // We're in the center, so we first try to go to a different pane,
 3636            // otherwise try to go to a dock.
 3637            (Origin::Center, direction) => {
 3638                if let Some(pane) = self.find_pane_in_direction(direction, cx) {
 3639                    Some(Target::Pane(pane))
 3640                } else {
 3641                    match direction {
 3642                        SplitDirection::Up => None,
 3643                        SplitDirection::Down => try_dock(&self.bottom_dock),
 3644                        SplitDirection::Left => try_dock(&self.left_dock),
 3645                        SplitDirection::Right => try_dock(&self.right_dock),
 3646                    }
 3647                }
 3648            }
 3649
 3650            (Origin::LeftDock, SplitDirection::Right) => {
 3651                if let Some(last_active_pane) = get_last_active_pane() {
 3652                    Some(Target::Pane(last_active_pane))
 3653                } else {
 3654                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.right_dock))
 3655                }
 3656            }
 3657
 3658            (Origin::LeftDock, SplitDirection::Down)
 3659            | (Origin::RightDock, SplitDirection::Down) => try_dock(&self.bottom_dock),
 3660
 3661            (Origin::BottomDock, SplitDirection::Up) => get_last_active_pane().map(Target::Pane),
 3662            (Origin::BottomDock, SplitDirection::Left) => try_dock(&self.left_dock),
 3663            (Origin::BottomDock, SplitDirection::Right) => try_dock(&self.right_dock),
 3664
 3665            (Origin::RightDock, SplitDirection::Left) => {
 3666                if let Some(last_active_pane) = get_last_active_pane() {
 3667                    Some(Target::Pane(last_active_pane))
 3668                } else {
 3669                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.left_dock))
 3670                }
 3671            }
 3672
 3673            _ => None,
 3674        };
 3675
 3676        match target {
 3677            Some(ActivateInDirectionTarget::Pane(pane)) => {
 3678                let pane = pane.read(cx);
 3679                if let Some(item) = pane.active_item() {
 3680                    item.item_focus_handle(cx).focus(window);
 3681                } else {
 3682                    log::error!(
 3683                        "Could not find a focus target when in switching focus in {direction} direction for a pane",
 3684                    );
 3685                }
 3686            }
 3687            Some(ActivateInDirectionTarget::Dock(dock)) => {
 3688                // Defer this to avoid a panic when the dock's active panel is already on the stack.
 3689                window.defer(cx, move |window, cx| {
 3690                    let dock = dock.read(cx);
 3691                    if let Some(panel) = dock.active_panel() {
 3692                        panel.panel_focus_handle(cx).focus(window);
 3693                    } else {
 3694                        log::error!("Could not find a focus target when in switching focus in {direction} direction for a {:?} dock", dock.position());
 3695                    }
 3696                })
 3697            }
 3698            None => {}
 3699        }
 3700    }
 3701
 3702    pub fn move_item_to_pane_in_direction(
 3703        &mut self,
 3704        action: &MoveItemToPaneInDirection,
 3705        window: &mut Window,
 3706        cx: &mut Context<Self>,
 3707    ) {
 3708        let destination = match self.find_pane_in_direction(action.direction, cx) {
 3709            Some(destination) => destination,
 3710            None => {
 3711                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3712                    return;
 3713                }
 3714                let new_pane = self.add_pane(window, cx);
 3715                if self
 3716                    .center
 3717                    .split(&self.active_pane, &new_pane, action.direction)
 3718                    .log_err()
 3719                    .is_none()
 3720                {
 3721                    return;
 3722                };
 3723                new_pane
 3724            }
 3725        };
 3726
 3727        if action.clone {
 3728            clone_active_item(
 3729                self.database_id(),
 3730                &self.active_pane,
 3731                &destination,
 3732                action.focus,
 3733                window,
 3734                cx,
 3735            )
 3736        } else {
 3737            move_active_item(
 3738                &self.active_pane,
 3739                &destination,
 3740                action.focus,
 3741                true,
 3742                window,
 3743                cx,
 3744            );
 3745        }
 3746    }
 3747
 3748    pub fn bounding_box_for_pane(&self, pane: &Entity<Pane>) -> Option<Bounds<Pixels>> {
 3749        self.center.bounding_box_for_pane(pane)
 3750    }
 3751
 3752    pub fn find_pane_in_direction(
 3753        &mut self,
 3754        direction: SplitDirection,
 3755        cx: &App,
 3756    ) -> Option<Entity<Pane>> {
 3757        self.center
 3758            .find_pane_in_direction(&self.active_pane, direction, cx)
 3759            .cloned()
 3760    }
 3761
 3762    pub fn swap_pane_in_direction(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 3763        if let Some(to) = self.find_pane_in_direction(direction, cx) {
 3764            self.center.swap(&self.active_pane, &to);
 3765            cx.notify();
 3766        }
 3767    }
 3768
 3769    pub fn resize_pane(
 3770        &mut self,
 3771        axis: gpui::Axis,
 3772        amount: Pixels,
 3773        window: &mut Window,
 3774        cx: &mut Context<Self>,
 3775    ) {
 3776        let docks = self.all_docks();
 3777        let active_dock = docks
 3778            .into_iter()
 3779            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 3780
 3781        if let Some(dock) = active_dock {
 3782            let Some(panel_size) = dock.read(cx).active_panel_size(window, cx) else {
 3783                return;
 3784            };
 3785            match dock.read(cx).position() {
 3786                DockPosition::Left => self.resize_left_dock(panel_size + amount, window, cx),
 3787                DockPosition::Bottom => self.resize_bottom_dock(panel_size + amount, window, cx),
 3788                DockPosition::Right => self.resize_right_dock(panel_size + amount, window, cx),
 3789            }
 3790        } else {
 3791            self.center
 3792                .resize(&self.active_pane, axis, amount, &self.bounds);
 3793        }
 3794        cx.notify();
 3795    }
 3796
 3797    pub fn reset_pane_sizes(&mut self, cx: &mut Context<Self>) {
 3798        self.center.reset_pane_sizes();
 3799        cx.notify();
 3800    }
 3801
 3802    fn handle_pane_focused(
 3803        &mut self,
 3804        pane: Entity<Pane>,
 3805        window: &mut Window,
 3806        cx: &mut Context<Self>,
 3807    ) {
 3808        // This is explicitly hoisted out of the following check for pane identity as
 3809        // terminal panel panes are not registered as a center panes.
 3810        self.status_bar.update(cx, |status_bar, cx| {
 3811            status_bar.set_active_pane(&pane, window, cx);
 3812        });
 3813        if self.active_pane != pane {
 3814            self.set_active_pane(&pane, window, cx);
 3815        }
 3816
 3817        if self.last_active_center_pane.is_none() {
 3818            self.last_active_center_pane = Some(pane.downgrade());
 3819        }
 3820
 3821        self.dismiss_zoomed_items_to_reveal(None, window, cx);
 3822        if pane.read(cx).is_zoomed() {
 3823            self.zoomed = Some(pane.downgrade().into());
 3824        } else {
 3825            self.zoomed = None;
 3826        }
 3827        self.zoomed_position = None;
 3828        cx.emit(Event::ZoomChanged);
 3829        self.update_active_view_for_followers(window, cx);
 3830        pane.update(cx, |pane, _| {
 3831            pane.track_alternate_file_items();
 3832        });
 3833
 3834        cx.notify();
 3835    }
 3836
 3837    fn set_active_pane(
 3838        &mut self,
 3839        pane: &Entity<Pane>,
 3840        window: &mut Window,
 3841        cx: &mut Context<Self>,
 3842    ) {
 3843        self.active_pane = pane.clone();
 3844        self.active_item_path_changed(window, cx);
 3845        self.last_active_center_pane = Some(pane.downgrade());
 3846    }
 3847
 3848    fn handle_panel_focused(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3849        self.update_active_view_for_followers(window, cx);
 3850    }
 3851
 3852    fn handle_pane_event(
 3853        &mut self,
 3854        pane: &Entity<Pane>,
 3855        event: &pane::Event,
 3856        window: &mut Window,
 3857        cx: &mut Context<Self>,
 3858    ) {
 3859        let mut serialize_workspace = true;
 3860        match event {
 3861            pane::Event::AddItem { item } => {
 3862                item.added_to_pane(self, pane.clone(), window, cx);
 3863                cx.emit(Event::ItemAdded {
 3864                    item: item.boxed_clone(),
 3865                });
 3866            }
 3867            pane::Event::Split(direction) => {
 3868                self.split_and_clone(pane.clone(), *direction, window, cx);
 3869            }
 3870            pane::Event::JoinIntoNext => {
 3871                self.join_pane_into_next(pane.clone(), window, cx);
 3872            }
 3873            pane::Event::JoinAll => {
 3874                self.join_all_panes(window, cx);
 3875            }
 3876            pane::Event::Remove { focus_on_pane } => {
 3877                self.remove_pane(pane.clone(), focus_on_pane.clone(), window, cx);
 3878            }
 3879            pane::Event::ActivateItem {
 3880                local,
 3881                focus_changed,
 3882            } => {
 3883                window.invalidate_character_coordinates();
 3884
 3885                pane.update(cx, |pane, _| {
 3886                    pane.track_alternate_file_items();
 3887                });
 3888                if *local {
 3889                    self.unfollow_in_pane(&pane, window, cx);
 3890                }
 3891                serialize_workspace = *focus_changed || pane != self.active_pane();
 3892                if pane == self.active_pane() {
 3893                    self.active_item_path_changed(window, cx);
 3894                    self.update_active_view_for_followers(window, cx);
 3895                } else if *local {
 3896                    self.set_active_pane(&pane, window, cx);
 3897                }
 3898            }
 3899            pane::Event::UserSavedItem { item, save_intent } => {
 3900                cx.emit(Event::UserSavedItem {
 3901                    pane: pane.downgrade(),
 3902                    item: item.boxed_clone(),
 3903                    save_intent: *save_intent,
 3904                });
 3905                serialize_workspace = false;
 3906            }
 3907            pane::Event::ChangeItemTitle => {
 3908                if *pane == self.active_pane {
 3909                    self.active_item_path_changed(window, cx);
 3910                }
 3911                serialize_workspace = false;
 3912            }
 3913            pane::Event::RemoveItem { .. } => {}
 3914            pane::Event::RemovedItem { item } => {
 3915                cx.emit(Event::ActiveItemChanged);
 3916                self.update_window_edited(window, cx);
 3917                if let hash_map::Entry::Occupied(entry) = self.panes_by_item.entry(item.item_id()) {
 3918                    if entry.get().entity_id() == pane.entity_id() {
 3919                        entry.remove();
 3920                    }
 3921                }
 3922            }
 3923            pane::Event::Focus => {
 3924                window.invalidate_character_coordinates();
 3925                self.handle_pane_focused(pane.clone(), window, cx);
 3926            }
 3927            pane::Event::ZoomIn => {
 3928                if *pane == self.active_pane {
 3929                    pane.update(cx, |pane, cx| pane.set_zoomed(true, cx));
 3930                    if pane.read(cx).has_focus(window, cx) {
 3931                        self.zoomed = Some(pane.downgrade().into());
 3932                        self.zoomed_position = None;
 3933                        cx.emit(Event::ZoomChanged);
 3934                    }
 3935                    cx.notify();
 3936                }
 3937            }
 3938            pane::Event::ZoomOut => {
 3939                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 3940                if self.zoomed_position.is_none() {
 3941                    self.zoomed = None;
 3942                    cx.emit(Event::ZoomChanged);
 3943                }
 3944                cx.notify();
 3945            }
 3946            pane::Event::ItemPinned | pane::Event::ItemUnpinned => {}
 3947        }
 3948
 3949        if serialize_workspace {
 3950            self.serialize_workspace(window, cx);
 3951        }
 3952    }
 3953
 3954    pub fn unfollow_in_pane(
 3955        &mut self,
 3956        pane: &Entity<Pane>,
 3957        window: &mut Window,
 3958        cx: &mut Context<Workspace>,
 3959    ) -> Option<CollaboratorId> {
 3960        let leader_id = self.leader_for_pane(pane)?;
 3961        self.unfollow(leader_id, window, cx);
 3962        Some(leader_id)
 3963    }
 3964
 3965    pub fn split_pane(
 3966        &mut self,
 3967        pane_to_split: Entity<Pane>,
 3968        split_direction: SplitDirection,
 3969        window: &mut Window,
 3970        cx: &mut Context<Self>,
 3971    ) -> Entity<Pane> {
 3972        let new_pane = self.add_pane(window, cx);
 3973        self.center
 3974            .split(&pane_to_split, &new_pane, split_direction)
 3975            .unwrap();
 3976        cx.notify();
 3977        new_pane
 3978    }
 3979
 3980    pub fn split_and_clone(
 3981        &mut self,
 3982        pane: Entity<Pane>,
 3983        direction: SplitDirection,
 3984        window: &mut Window,
 3985        cx: &mut Context<Self>,
 3986    ) -> Option<Entity<Pane>> {
 3987        let item = pane.read(cx).active_item()?;
 3988        let maybe_pane_handle =
 3989            if let Some(clone) = item.clone_on_split(self.database_id(), window, cx) {
 3990                let new_pane = self.add_pane(window, cx);
 3991                new_pane.update(cx, |pane, cx| {
 3992                    pane.add_item(clone, true, true, None, window, cx)
 3993                });
 3994                self.center.split(&pane, &new_pane, direction).unwrap();
 3995                Some(new_pane)
 3996            } else {
 3997                None
 3998            };
 3999        cx.notify();
 4000        maybe_pane_handle
 4001    }
 4002
 4003    pub fn split_pane_with_item(
 4004        &mut self,
 4005        pane_to_split: WeakEntity<Pane>,
 4006        split_direction: SplitDirection,
 4007        from: WeakEntity<Pane>,
 4008        item_id_to_move: EntityId,
 4009        window: &mut Window,
 4010        cx: &mut Context<Self>,
 4011    ) {
 4012        let Some(pane_to_split) = pane_to_split.upgrade() else {
 4013            return;
 4014        };
 4015        let Some(from) = from.upgrade() else {
 4016            return;
 4017        };
 4018
 4019        let new_pane = self.add_pane(window, cx);
 4020        move_item(&from, &new_pane, item_id_to_move, 0, true, window, cx);
 4021        self.center
 4022            .split(&pane_to_split, &new_pane, split_direction)
 4023            .unwrap();
 4024        cx.notify();
 4025    }
 4026
 4027    pub fn split_pane_with_project_entry(
 4028        &mut self,
 4029        pane_to_split: WeakEntity<Pane>,
 4030        split_direction: SplitDirection,
 4031        project_entry: ProjectEntryId,
 4032        window: &mut Window,
 4033        cx: &mut Context<Self>,
 4034    ) -> Option<Task<Result<()>>> {
 4035        let pane_to_split = pane_to_split.upgrade()?;
 4036        let new_pane = self.add_pane(window, cx);
 4037        self.center
 4038            .split(&pane_to_split, &new_pane, split_direction)
 4039            .unwrap();
 4040
 4041        let path = self.project.read(cx).path_for_entry(project_entry, cx)?;
 4042        let task = self.open_path(path, Some(new_pane.downgrade()), true, window, cx);
 4043        Some(cx.foreground_executor().spawn(async move {
 4044            task.await?;
 4045            Ok(())
 4046        }))
 4047    }
 4048
 4049    pub fn join_all_panes(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4050        let active_item = self.active_pane.read(cx).active_item();
 4051        for pane in &self.panes {
 4052            join_pane_into_active(&self.active_pane, pane, window, cx);
 4053        }
 4054        if let Some(active_item) = active_item {
 4055            self.activate_item(active_item.as_ref(), true, true, window, cx);
 4056        }
 4057        cx.notify();
 4058    }
 4059
 4060    pub fn join_pane_into_next(
 4061        &mut self,
 4062        pane: Entity<Pane>,
 4063        window: &mut Window,
 4064        cx: &mut Context<Self>,
 4065    ) {
 4066        let next_pane = self
 4067            .find_pane_in_direction(SplitDirection::Right, cx)
 4068            .or_else(|| self.find_pane_in_direction(SplitDirection::Down, cx))
 4069            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4070            .or_else(|| self.find_pane_in_direction(SplitDirection::Up, cx));
 4071        let Some(next_pane) = next_pane else {
 4072            return;
 4073        };
 4074        move_all_items(&pane, &next_pane, window, cx);
 4075        cx.notify();
 4076    }
 4077
 4078    fn remove_pane(
 4079        &mut self,
 4080        pane: Entity<Pane>,
 4081        focus_on: Option<Entity<Pane>>,
 4082        window: &mut Window,
 4083        cx: &mut Context<Self>,
 4084    ) {
 4085        if self.center.remove(&pane).unwrap() {
 4086            self.force_remove_pane(&pane, &focus_on, window, cx);
 4087            self.unfollow_in_pane(&pane, window, cx);
 4088            self.last_leaders_by_pane.remove(&pane.downgrade());
 4089            for removed_item in pane.read(cx).items() {
 4090                self.panes_by_item.remove(&removed_item.item_id());
 4091            }
 4092
 4093            cx.notify();
 4094        } else {
 4095            self.active_item_path_changed(window, cx);
 4096        }
 4097        cx.emit(Event::PaneRemoved);
 4098    }
 4099
 4100    pub fn panes(&self) -> &[Entity<Pane>] {
 4101        &self.panes
 4102    }
 4103
 4104    pub fn active_pane(&self) -> &Entity<Pane> {
 4105        &self.active_pane
 4106    }
 4107
 4108    pub fn focused_pane(&self, window: &Window, cx: &App) -> Entity<Pane> {
 4109        for dock in self.all_docks() {
 4110            if dock.focus_handle(cx).contains_focused(window, cx) {
 4111                if let Some(pane) = dock
 4112                    .read(cx)
 4113                    .active_panel()
 4114                    .and_then(|panel| panel.pane(cx))
 4115                {
 4116                    return pane;
 4117                }
 4118            }
 4119        }
 4120        self.active_pane().clone()
 4121    }
 4122
 4123    pub fn adjacent_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 4124        self.find_pane_in_direction(SplitDirection::Right, cx)
 4125            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4126            .unwrap_or_else(|| {
 4127                self.split_pane(self.active_pane.clone(), SplitDirection::Right, window, cx)
 4128            })
 4129            .clone()
 4130    }
 4131
 4132    pub fn pane_for(&self, handle: &dyn ItemHandle) -> Option<Entity<Pane>> {
 4133        let weak_pane = self.panes_by_item.get(&handle.item_id())?;
 4134        weak_pane.upgrade()
 4135    }
 4136
 4137    fn collaborator_left(&mut self, peer_id: PeerId, window: &mut Window, cx: &mut Context<Self>) {
 4138        self.follower_states.retain(|leader_id, state| {
 4139            if *leader_id == CollaboratorId::PeerId(peer_id) {
 4140                for item in state.items_by_leader_view_id.values() {
 4141                    item.view.set_leader_id(None, window, cx);
 4142                }
 4143                false
 4144            } else {
 4145                true
 4146            }
 4147        });
 4148        cx.notify();
 4149    }
 4150
 4151    pub fn start_following(
 4152        &mut self,
 4153        leader_id: impl Into<CollaboratorId>,
 4154        window: &mut Window,
 4155        cx: &mut Context<Self>,
 4156    ) -> Option<Task<Result<()>>> {
 4157        let leader_id = leader_id.into();
 4158        let pane = self.active_pane().clone();
 4159
 4160        self.last_leaders_by_pane
 4161            .insert(pane.downgrade(), leader_id);
 4162        self.unfollow(leader_id, window, cx);
 4163        self.unfollow_in_pane(&pane, window, cx);
 4164        self.follower_states.insert(
 4165            leader_id,
 4166            FollowerState {
 4167                center_pane: pane.clone(),
 4168                dock_pane: None,
 4169                active_view_id: None,
 4170                items_by_leader_view_id: Default::default(),
 4171            },
 4172        );
 4173        cx.notify();
 4174
 4175        match leader_id {
 4176            CollaboratorId::PeerId(leader_peer_id) => {
 4177                let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4178                let project_id = self.project.read(cx).remote_id();
 4179                let request = self.app_state.client.request(proto::Follow {
 4180                    room_id,
 4181                    project_id,
 4182                    leader_id: Some(leader_peer_id),
 4183                });
 4184
 4185                Some(cx.spawn_in(window, async move |this, cx| {
 4186                    let response = request.await?;
 4187                    this.update(cx, |this, _| {
 4188                        let state = this
 4189                            .follower_states
 4190                            .get_mut(&leader_id)
 4191                            .context("following interrupted")?;
 4192                        state.active_view_id = response
 4193                            .active_view
 4194                            .as_ref()
 4195                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4196                        anyhow::Ok(())
 4197                    })??;
 4198                    if let Some(view) = response.active_view {
 4199                        Self::add_view_from_leader(this.clone(), leader_peer_id, &view, cx).await?;
 4200                    }
 4201                    this.update_in(cx, |this, window, cx| {
 4202                        this.leader_updated(leader_id, window, cx)
 4203                    })?;
 4204                    Ok(())
 4205                }))
 4206            }
 4207            CollaboratorId::Agent => {
 4208                self.leader_updated(leader_id, window, cx)?;
 4209                Some(Task::ready(Ok(())))
 4210            }
 4211        }
 4212    }
 4213
 4214    pub fn follow_next_collaborator(
 4215        &mut self,
 4216        _: &FollowNextCollaborator,
 4217        window: &mut Window,
 4218        cx: &mut Context<Self>,
 4219    ) {
 4220        let collaborators = self.project.read(cx).collaborators();
 4221        let next_leader_id = if let Some(leader_id) = self.leader_for_pane(&self.active_pane) {
 4222            let mut collaborators = collaborators.keys().copied();
 4223            for peer_id in collaborators.by_ref() {
 4224                if CollaboratorId::PeerId(peer_id) == leader_id {
 4225                    break;
 4226                }
 4227            }
 4228            collaborators.next().map(CollaboratorId::PeerId)
 4229        } else if let Some(last_leader_id) =
 4230            self.last_leaders_by_pane.get(&self.active_pane.downgrade())
 4231        {
 4232            match last_leader_id {
 4233                CollaboratorId::PeerId(peer_id) => {
 4234                    if collaborators.contains_key(peer_id) {
 4235                        Some(*last_leader_id)
 4236                    } else {
 4237                        None
 4238                    }
 4239                }
 4240                CollaboratorId::Agent => Some(CollaboratorId::Agent),
 4241            }
 4242        } else {
 4243            None
 4244        };
 4245
 4246        let pane = self.active_pane.clone();
 4247        let Some(leader_id) = next_leader_id.or_else(|| {
 4248            Some(CollaboratorId::PeerId(
 4249                collaborators.keys().copied().next()?,
 4250            ))
 4251        }) else {
 4252            return;
 4253        };
 4254        if self.unfollow_in_pane(&pane, window, cx) == Some(leader_id) {
 4255            return;
 4256        }
 4257        if let Some(task) = self.start_following(leader_id, window, cx) {
 4258            task.detach_and_log_err(cx)
 4259        }
 4260    }
 4261
 4262    pub fn follow(
 4263        &mut self,
 4264        leader_id: impl Into<CollaboratorId>,
 4265        window: &mut Window,
 4266        cx: &mut Context<Self>,
 4267    ) {
 4268        let leader_id = leader_id.into();
 4269
 4270        if let CollaboratorId::PeerId(peer_id) = leader_id {
 4271            let Some(room) = ActiveCall::global(cx).read(cx).room() else {
 4272                return;
 4273            };
 4274            let room = room.read(cx);
 4275            let Some(remote_participant) = room.remote_participant_for_peer_id(peer_id) else {
 4276                return;
 4277            };
 4278
 4279            let project = self.project.read(cx);
 4280
 4281            let other_project_id = match remote_participant.location {
 4282                call::ParticipantLocation::External => None,
 4283                call::ParticipantLocation::UnsharedProject => None,
 4284                call::ParticipantLocation::SharedProject { project_id } => {
 4285                    if Some(project_id) == project.remote_id() {
 4286                        None
 4287                    } else {
 4288                        Some(project_id)
 4289                    }
 4290                }
 4291            };
 4292
 4293            // if they are active in another project, follow there.
 4294            if let Some(project_id) = other_project_id {
 4295                let app_state = self.app_state.clone();
 4296                crate::join_in_room_project(project_id, remote_participant.user.id, app_state, cx)
 4297                    .detach_and_log_err(cx);
 4298            }
 4299        }
 4300
 4301        // if you're already following, find the right pane and focus it.
 4302        if let Some(follower_state) = self.follower_states.get(&leader_id) {
 4303            window.focus(&follower_state.pane().focus_handle(cx));
 4304
 4305            return;
 4306        }
 4307
 4308        // Otherwise, follow.
 4309        if let Some(task) = self.start_following(leader_id, window, cx) {
 4310            task.detach_and_log_err(cx)
 4311        }
 4312    }
 4313
 4314    pub fn unfollow(
 4315        &mut self,
 4316        leader_id: impl Into<CollaboratorId>,
 4317        window: &mut Window,
 4318        cx: &mut Context<Self>,
 4319    ) -> Option<()> {
 4320        cx.notify();
 4321
 4322        let leader_id = leader_id.into();
 4323        let state = self.follower_states.remove(&leader_id)?;
 4324        for (_, item) in state.items_by_leader_view_id {
 4325            item.view.set_leader_id(None, window, cx);
 4326        }
 4327
 4328        if let CollaboratorId::PeerId(leader_peer_id) = leader_id {
 4329            let project_id = self.project.read(cx).remote_id();
 4330            let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4331            self.app_state
 4332                .client
 4333                .send(proto::Unfollow {
 4334                    room_id,
 4335                    project_id,
 4336                    leader_id: Some(leader_peer_id),
 4337                })
 4338                .log_err();
 4339        }
 4340
 4341        Some(())
 4342    }
 4343
 4344    pub fn is_being_followed(&self, id: impl Into<CollaboratorId>) -> bool {
 4345        self.follower_states.contains_key(&id.into())
 4346    }
 4347
 4348    fn active_item_path_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4349        cx.emit(Event::ActiveItemChanged);
 4350        let active_entry = self.active_project_path(cx);
 4351        self.project
 4352            .update(cx, |project, cx| project.set_active_path(active_entry, cx));
 4353
 4354        self.update_window_title(window, cx);
 4355    }
 4356
 4357    fn update_window_title(&mut self, window: &mut Window, cx: &mut App) {
 4358        let project = self.project().read(cx);
 4359        let mut title = String::new();
 4360
 4361        for (i, name) in project.worktree_root_names(cx).enumerate() {
 4362            if i > 0 {
 4363                title.push_str(", ");
 4364            }
 4365            title.push_str(name);
 4366        }
 4367
 4368        if title.is_empty() {
 4369            title = "empty project".to_string();
 4370        }
 4371
 4372        if let Some(path) = self.active_item(cx).and_then(|item| item.project_path(cx)) {
 4373            let filename = path
 4374                .path
 4375                .file_name()
 4376                .map(|s| s.to_string_lossy())
 4377                .or_else(|| {
 4378                    Some(Cow::Borrowed(
 4379                        project
 4380                            .worktree_for_id(path.worktree_id, cx)?
 4381                            .read(cx)
 4382                            .root_name(),
 4383                    ))
 4384                });
 4385
 4386            if let Some(filename) = filename {
 4387                title.push_str("");
 4388                title.push_str(filename.as_ref());
 4389            }
 4390        }
 4391
 4392        if project.is_via_collab() {
 4393            title.push_str("");
 4394        } else if project.is_shared() {
 4395            title.push_str("");
 4396        }
 4397
 4398        if let Some(last_title) = self.last_window_title.as_ref() {
 4399            if &title == last_title {
 4400                return;
 4401            }
 4402        }
 4403        window.set_window_title(&title);
 4404        self.last_window_title = Some(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 {
 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,
 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(Self::toggle_edit_predictions_all_files))
 5550            .on_action(cx.listener(|workspace, _: &Unfollow, window, cx| {
 5551                let pane = workspace.active_pane().clone();
 5552                workspace.unfollow_in_pane(&pane, window, cx);
 5553            }))
 5554            .on_action(cx.listener(|workspace, action: &Save, window, cx| {
 5555                workspace
 5556                    .save_active_item(action.save_intent.unwrap_or(SaveIntent::Save), window, cx)
 5557                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5558            }))
 5559            .on_action(cx.listener(|workspace, _: &SaveWithoutFormat, window, cx| {
 5560                workspace
 5561                    .save_active_item(SaveIntent::SaveWithoutFormat, window, cx)
 5562                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5563            }))
 5564            .on_action(cx.listener(|workspace, _: &SaveAs, window, cx| {
 5565                workspace
 5566                    .save_active_item(SaveIntent::SaveAs, window, cx)
 5567                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5568            }))
 5569            .on_action(
 5570                cx.listener(|workspace, _: &ActivatePreviousPane, window, cx| {
 5571                    workspace.activate_previous_pane(window, cx)
 5572                }),
 5573            )
 5574            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5575                workspace.activate_next_pane(window, cx)
 5576            }))
 5577            .on_action(
 5578                cx.listener(|workspace, _: &ActivateNextWindow, _window, cx| {
 5579                    workspace.activate_next_window(cx)
 5580                }),
 5581            )
 5582            .on_action(
 5583                cx.listener(|workspace, _: &ActivatePreviousWindow, _window, cx| {
 5584                    workspace.activate_previous_window(cx)
 5585                }),
 5586            )
 5587            .on_action(cx.listener(|workspace, _: &ActivatePaneLeft, window, cx| {
 5588                workspace.activate_pane_in_direction(SplitDirection::Left, window, cx)
 5589            }))
 5590            .on_action(cx.listener(|workspace, _: &ActivatePaneRight, window, cx| {
 5591                workspace.activate_pane_in_direction(SplitDirection::Right, window, cx)
 5592            }))
 5593            .on_action(cx.listener(|workspace, _: &ActivatePaneUp, window, cx| {
 5594                workspace.activate_pane_in_direction(SplitDirection::Up, window, cx)
 5595            }))
 5596            .on_action(cx.listener(|workspace, _: &ActivatePaneDown, window, cx| {
 5597                workspace.activate_pane_in_direction(SplitDirection::Down, window, cx)
 5598            }))
 5599            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5600                workspace.activate_next_pane(window, cx)
 5601            }))
 5602            .on_action(cx.listener(
 5603                |workspace, action: &MoveItemToPaneInDirection, window, cx| {
 5604                    workspace.move_item_to_pane_in_direction(action, window, cx)
 5605                },
 5606            ))
 5607            .on_action(cx.listener(|workspace, _: &SwapPaneLeft, _, cx| {
 5608                workspace.swap_pane_in_direction(SplitDirection::Left, cx)
 5609            }))
 5610            .on_action(cx.listener(|workspace, _: &SwapPaneRight, _, cx| {
 5611                workspace.swap_pane_in_direction(SplitDirection::Right, cx)
 5612            }))
 5613            .on_action(cx.listener(|workspace, _: &SwapPaneUp, _, cx| {
 5614                workspace.swap_pane_in_direction(SplitDirection::Up, cx)
 5615            }))
 5616            .on_action(cx.listener(|workspace, _: &SwapPaneDown, _, cx| {
 5617                workspace.swap_pane_in_direction(SplitDirection::Down, cx)
 5618            }))
 5619            .on_action(cx.listener(|this, _: &ToggleLeftDock, window, cx| {
 5620                this.toggle_dock(DockPosition::Left, window, cx);
 5621            }))
 5622            .on_action(cx.listener(
 5623                |workspace: &mut Workspace, _: &ToggleRightDock, window, cx| {
 5624                    workspace.toggle_dock(DockPosition::Right, window, cx);
 5625                },
 5626            ))
 5627            .on_action(cx.listener(
 5628                |workspace: &mut Workspace, _: &ToggleBottomDock, window, cx| {
 5629                    workspace.toggle_dock(DockPosition::Bottom, window, cx);
 5630                },
 5631            ))
 5632            .on_action(cx.listener(
 5633                |workspace: &mut Workspace, _: &CloseActiveDock, window, cx| {
 5634                    if !workspace.close_active_dock(window, cx) {
 5635                        cx.propagate();
 5636                    }
 5637                },
 5638            ))
 5639            .on_action(
 5640                cx.listener(|workspace: &mut Workspace, _: &CloseAllDocks, window, cx| {
 5641                    workspace.close_all_docks(window, cx);
 5642                }),
 5643            )
 5644            .on_action(cx.listener(
 5645                |workspace: &mut Workspace, _: &ClearAllNotifications, _, cx| {
 5646                    workspace.clear_all_notifications(cx);
 5647                },
 5648            ))
 5649            .on_action(cx.listener(
 5650                |workspace: &mut Workspace, _: &SuppressNotification, _, cx| {
 5651                    if let Some((notification_id, _)) = workspace.notifications.pop() {
 5652                        workspace.suppress_notification(&notification_id, cx);
 5653                    }
 5654                },
 5655            ))
 5656            .on_action(cx.listener(
 5657                |workspace: &mut Workspace, _: &ReopenClosedItem, window, cx| {
 5658                    workspace.reopen_closed_item(window, cx).detach();
 5659                },
 5660            ))
 5661            .on_action(cx.listener(
 5662                |workspace: &mut Workspace, _: &ResetActiveDockSize, window, cx| {
 5663                    for dock in workspace.all_docks() {
 5664                        if dock.focus_handle(cx).contains_focused(window, cx) {
 5665                            let Some(panel) = dock.read(cx).active_panel() else {
 5666                                return;
 5667                            };
 5668
 5669                            // Set to `None`, then the size will fall back to the default.
 5670                            panel.clone().set_size(None, window, cx);
 5671
 5672                            return;
 5673                        }
 5674                    }
 5675                },
 5676            ))
 5677            .on_action(cx.listener(
 5678                |workspace: &mut Workspace, _: &ResetOpenDocksSize, window, cx| {
 5679                    for dock in workspace.all_docks() {
 5680                        if let Some(panel) = dock.read(cx).visible_panel() {
 5681                            // Set to `None`, then the size will fall back to the default.
 5682                            panel.clone().set_size(None, window, cx);
 5683                        }
 5684                    }
 5685                },
 5686            ))
 5687            .on_action(cx.listener(
 5688                |workspace: &mut Workspace, act: &IncreaseActiveDockSize, window, cx| {
 5689                    adjust_active_dock_size_by_px(
 5690                        px_with_ui_font_fallback(act.px, cx),
 5691                        workspace,
 5692                        window,
 5693                        cx,
 5694                    );
 5695                },
 5696            ))
 5697            .on_action(cx.listener(
 5698                |workspace: &mut Workspace, act: &DecreaseActiveDockSize, window, cx| {
 5699                    adjust_active_dock_size_by_px(
 5700                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5701                        workspace,
 5702                        window,
 5703                        cx,
 5704                    );
 5705                },
 5706            ))
 5707            .on_action(cx.listener(
 5708                |workspace: &mut Workspace, act: &IncreaseOpenDocksSize, window, cx| {
 5709                    adjust_open_docks_size_by_px(
 5710                        px_with_ui_font_fallback(act.px, cx),
 5711                        workspace,
 5712                        window,
 5713                        cx,
 5714                    );
 5715                },
 5716            ))
 5717            .on_action(cx.listener(
 5718                |workspace: &mut Workspace, act: &DecreaseOpenDocksSize, window, cx| {
 5719                    adjust_open_docks_size_by_px(
 5720                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5721                        workspace,
 5722                        window,
 5723                        cx,
 5724                    );
 5725                },
 5726            ))
 5727            .on_action(cx.listener(Workspace::toggle_centered_layout))
 5728            .on_action(cx.listener(Workspace::cancel))
 5729    }
 5730
 5731    #[cfg(any(test, feature = "test-support"))]
 5732    pub fn test_new(project: Entity<Project>, window: &mut Window, cx: &mut Context<Self>) -> Self {
 5733        use node_runtime::NodeRuntime;
 5734        use session::Session;
 5735
 5736        let client = project.read(cx).client();
 5737        let user_store = project.read(cx).user_store();
 5738        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 5739        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 5740        window.activate_window();
 5741        let app_state = Arc::new(AppState {
 5742            languages: project.read(cx).languages().clone(),
 5743            workspace_store,
 5744            client,
 5745            user_store,
 5746            fs: project.read(cx).fs().clone(),
 5747            build_window_options: |_, _| Default::default(),
 5748            node_runtime: NodeRuntime::unavailable(),
 5749            session,
 5750        });
 5751        let workspace = Self::new(Default::default(), project, app_state, window, cx);
 5752        workspace
 5753            .active_pane
 5754            .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5755        workspace
 5756    }
 5757
 5758    pub fn register_action<A: Action>(
 5759        &mut self,
 5760        callback: impl Fn(&mut Self, &A, &mut Window, &mut Context<Self>) + 'static,
 5761    ) -> &mut Self {
 5762        let callback = Arc::new(callback);
 5763
 5764        self.workspace_actions.push(Box::new(move |div, _, _, cx| {
 5765            let callback = callback.clone();
 5766            div.on_action(cx.listener(move |workspace, event, window, cx| {
 5767                (callback)(workspace, event, window, cx)
 5768            }))
 5769        }));
 5770        self
 5771    }
 5772    pub fn register_action_renderer(
 5773        &mut self,
 5774        callback: impl Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div + 'static,
 5775    ) -> &mut Self {
 5776        self.workspace_actions.push(Box::new(callback));
 5777        self
 5778    }
 5779
 5780    fn add_workspace_actions_listeners(
 5781        &self,
 5782        mut div: Div,
 5783        window: &mut Window,
 5784        cx: &mut Context<Self>,
 5785    ) -> Div {
 5786        for action in self.workspace_actions.iter() {
 5787            div = (action)(div, self, window, cx)
 5788        }
 5789        div
 5790    }
 5791
 5792    pub fn has_active_modal(&self, _: &mut Window, cx: &mut App) -> bool {
 5793        self.modal_layer.read(cx).has_active_modal()
 5794    }
 5795
 5796    pub fn active_modal<V: ManagedView + 'static>(&self, cx: &App) -> Option<Entity<V>> {
 5797        self.modal_layer.read(cx).active_modal()
 5798    }
 5799
 5800    pub fn toggle_modal<V: ModalView, B>(&mut self, window: &mut Window, cx: &mut App, build: B)
 5801    where
 5802        B: FnOnce(&mut Window, &mut Context<V>) -> V,
 5803    {
 5804        self.modal_layer.update(cx, |modal_layer, cx| {
 5805            modal_layer.toggle_modal(window, cx, build)
 5806        })
 5807    }
 5808
 5809    pub fn toggle_status_toast<V: ToastView>(&mut self, entity: Entity<V>, cx: &mut App) {
 5810        self.toast_layer
 5811            .update(cx, |toast_layer, cx| toast_layer.toggle_toast(cx, entity))
 5812    }
 5813
 5814    pub fn toggle_centered_layout(
 5815        &mut self,
 5816        _: &ToggleCenteredLayout,
 5817        _: &mut Window,
 5818        cx: &mut Context<Self>,
 5819    ) {
 5820        self.centered_layout = !self.centered_layout;
 5821        if let Some(database_id) = self.database_id() {
 5822            cx.background_spawn(DB.set_centered_layout(database_id, self.centered_layout))
 5823                .detach_and_log_err(cx);
 5824        }
 5825        cx.notify();
 5826    }
 5827
 5828    fn adjust_padding(padding: Option<f32>) -> f32 {
 5829        padding
 5830            .unwrap_or(Self::DEFAULT_PADDING)
 5831            .clamp(0.0, Self::MAX_PADDING)
 5832    }
 5833
 5834    fn render_dock(
 5835        &self,
 5836        position: DockPosition,
 5837        dock: &Entity<Dock>,
 5838        window: &mut Window,
 5839        cx: &mut App,
 5840    ) -> Option<Div> {
 5841        if self.zoomed_position == Some(position) {
 5842            return None;
 5843        }
 5844
 5845        let leader_border = dock.read(cx).active_panel().and_then(|panel| {
 5846            let pane = panel.pane(cx)?;
 5847            let follower_states = &self.follower_states;
 5848            leader_border_for_pane(follower_states, &pane, window, cx)
 5849        });
 5850
 5851        Some(
 5852            div()
 5853                .flex()
 5854                .flex_none()
 5855                .overflow_hidden()
 5856                .child(dock.clone())
 5857                .children(leader_border),
 5858        )
 5859    }
 5860
 5861    pub fn for_window(window: &mut Window, _: &mut App) -> Option<Entity<Workspace>> {
 5862        window.root().flatten()
 5863    }
 5864
 5865    pub fn zoomed_item(&self) -> Option<&AnyWeakView> {
 5866        self.zoomed.as_ref()
 5867    }
 5868
 5869    pub fn activate_next_window(&mut self, cx: &mut Context<Self>) {
 5870        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 5871            return;
 5872        };
 5873        let windows = cx.windows();
 5874        let Some(next_window) = windows
 5875            .iter()
 5876            .cycle()
 5877            .skip_while(|window| window.window_id() != current_window_id)
 5878            .nth(1)
 5879        else {
 5880            return;
 5881        };
 5882        next_window
 5883            .update(cx, |_, window, _| window.activate_window())
 5884            .ok();
 5885    }
 5886
 5887    pub fn activate_previous_window(&mut self, cx: &mut Context<Self>) {
 5888        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 5889            return;
 5890        };
 5891        let windows = cx.windows();
 5892        let Some(prev_window) = windows
 5893            .iter()
 5894            .rev()
 5895            .cycle()
 5896            .skip_while(|window| window.window_id() != current_window_id)
 5897            .nth(1)
 5898        else {
 5899            return;
 5900        };
 5901        prev_window
 5902            .update(cx, |_, window, _| window.activate_window())
 5903            .ok();
 5904    }
 5905
 5906    pub fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
 5907        if cx.stop_active_drag(window) {
 5908            return;
 5909        } else if let Some((notification_id, _)) = self.notifications.pop() {
 5910            dismiss_app_notification(&notification_id, cx);
 5911        } else {
 5912            cx.propagate();
 5913        }
 5914    }
 5915
 5916    fn adjust_dock_size_by_px(
 5917        &mut self,
 5918        panel_size: Pixels,
 5919        dock_pos: DockPosition,
 5920        px: Pixels,
 5921        window: &mut Window,
 5922        cx: &mut Context<Self>,
 5923    ) {
 5924        match dock_pos {
 5925            DockPosition::Left => self.resize_left_dock(panel_size + px, window, cx),
 5926            DockPosition::Right => self.resize_right_dock(panel_size + px, window, cx),
 5927            DockPosition::Bottom => self.resize_bottom_dock(panel_size + px, window, cx),
 5928        }
 5929    }
 5930
 5931    fn resize_left_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5932        let size = new_size.min(self.bounds.right() - RESIZE_HANDLE_SIZE);
 5933
 5934        self.left_dock.update(cx, |left_dock, cx| {
 5935            if WorkspaceSettings::get_global(cx)
 5936                .resize_all_panels_in_dock
 5937                .contains(&DockPosition::Left)
 5938            {
 5939                left_dock.resize_all_panels(Some(size), window, cx);
 5940            } else {
 5941                left_dock.resize_active_panel(Some(size), window, cx);
 5942            }
 5943        });
 5944    }
 5945
 5946    fn resize_right_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5947        let mut size = new_size.max(self.bounds.left() - RESIZE_HANDLE_SIZE);
 5948        self.left_dock.read_with(cx, |left_dock, cx| {
 5949            let left_dock_size = left_dock
 5950                .active_panel_size(window, cx)
 5951                .unwrap_or(Pixels(0.0));
 5952            if left_dock_size + size > self.bounds.right() {
 5953                size = self.bounds.right() - left_dock_size
 5954            }
 5955        });
 5956        self.right_dock.update(cx, |right_dock, cx| {
 5957            if WorkspaceSettings::get_global(cx)
 5958                .resize_all_panels_in_dock
 5959                .contains(&DockPosition::Right)
 5960            {
 5961                right_dock.resize_all_panels(Some(size), window, cx);
 5962            } else {
 5963                right_dock.resize_active_panel(Some(size), window, cx);
 5964            }
 5965        });
 5966    }
 5967
 5968    fn resize_bottom_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5969        let size = new_size.min(self.bounds.bottom() - RESIZE_HANDLE_SIZE - self.bounds.top());
 5970        self.bottom_dock.update(cx, |bottom_dock, cx| {
 5971            if WorkspaceSettings::get_global(cx)
 5972                .resize_all_panels_in_dock
 5973                .contains(&DockPosition::Bottom)
 5974            {
 5975                bottom_dock.resize_all_panels(Some(size), window, cx);
 5976            } else {
 5977                bottom_dock.resize_active_panel(Some(size), window, cx);
 5978            }
 5979        });
 5980    }
 5981
 5982    fn toggle_edit_predictions_all_files(
 5983        &mut self,
 5984        _: &ToggleEditPrediction,
 5985        _window: &mut Window,
 5986        cx: &mut Context<Self>,
 5987    ) {
 5988        let fs = self.project().read(cx).fs().clone();
 5989        let show_edit_predictions = all_language_settings(None, cx).show_edit_predictions(None, cx);
 5990        update_settings_file::<AllLanguageSettings>(fs, cx, move |file, _| {
 5991            file.defaults.show_edit_predictions = Some(!show_edit_predictions)
 5992        });
 5993    }
 5994}
 5995
 5996fn leader_border_for_pane(
 5997    follower_states: &HashMap<CollaboratorId, FollowerState>,
 5998    pane: &Entity<Pane>,
 5999    _: &Window,
 6000    cx: &App,
 6001) -> Option<Div> {
 6002    let (leader_id, _follower_state) = follower_states.iter().find_map(|(leader_id, state)| {
 6003        if state.pane() == pane {
 6004            Some((*leader_id, state))
 6005        } else {
 6006            None
 6007        }
 6008    })?;
 6009
 6010    let mut leader_color = match leader_id {
 6011        CollaboratorId::PeerId(leader_peer_id) => {
 6012            let room = ActiveCall::try_global(cx)?.read(cx).room()?.read(cx);
 6013            let leader = room.remote_participant_for_peer_id(leader_peer_id)?;
 6014
 6015            cx.theme()
 6016                .players()
 6017                .color_for_participant(leader.participant_index.0)
 6018                .cursor
 6019        }
 6020        CollaboratorId::Agent => cx.theme().players().agent().cursor,
 6021    };
 6022    leader_color.fade_out(0.3);
 6023    Some(
 6024        div()
 6025            .absolute()
 6026            .size_full()
 6027            .left_0()
 6028            .top_0()
 6029            .border_2()
 6030            .border_color(leader_color),
 6031    )
 6032}
 6033
 6034fn window_bounds_env_override() -> Option<Bounds<Pixels>> {
 6035    ZED_WINDOW_POSITION
 6036        .zip(*ZED_WINDOW_SIZE)
 6037        .map(|(position, size)| Bounds {
 6038            origin: position,
 6039            size,
 6040        })
 6041}
 6042
 6043fn open_items(
 6044    serialized_workspace: Option<SerializedWorkspace>,
 6045    mut project_paths_to_open: Vec<(PathBuf, Option<ProjectPath>)>,
 6046    window: &mut Window,
 6047    cx: &mut Context<Workspace>,
 6048) -> impl 'static + Future<Output = Result<Vec<Option<Result<Box<dyn ItemHandle>>>>>> + use<> {
 6049    let restored_items = serialized_workspace.map(|serialized_workspace| {
 6050        Workspace::load_workspace(
 6051            serialized_workspace,
 6052            project_paths_to_open
 6053                .iter()
 6054                .map(|(_, project_path)| project_path)
 6055                .cloned()
 6056                .collect(),
 6057            window,
 6058            cx,
 6059        )
 6060    });
 6061
 6062    cx.spawn_in(window, async move |workspace, cx| {
 6063        let mut opened_items = Vec::with_capacity(project_paths_to_open.len());
 6064
 6065        if let Some(restored_items) = restored_items {
 6066            let restored_items = restored_items.await?;
 6067
 6068            let restored_project_paths = restored_items
 6069                .iter()
 6070                .filter_map(|item| {
 6071                    cx.update(|_, cx| item.as_ref()?.project_path(cx))
 6072                        .ok()
 6073                        .flatten()
 6074                })
 6075                .collect::<HashSet<_>>();
 6076
 6077            for restored_item in restored_items {
 6078                opened_items.push(restored_item.map(Ok));
 6079            }
 6080
 6081            project_paths_to_open
 6082                .iter_mut()
 6083                .for_each(|(_, project_path)| {
 6084                    if let Some(project_path_to_open) = project_path {
 6085                        if restored_project_paths.contains(project_path_to_open) {
 6086                            *project_path = None;
 6087                        }
 6088                    }
 6089                });
 6090        } else {
 6091            for _ in 0..project_paths_to_open.len() {
 6092                opened_items.push(None);
 6093            }
 6094        }
 6095        assert!(opened_items.len() == project_paths_to_open.len());
 6096
 6097        let tasks =
 6098            project_paths_to_open
 6099                .into_iter()
 6100                .enumerate()
 6101                .map(|(ix, (abs_path, project_path))| {
 6102                    let workspace = workspace.clone();
 6103                    cx.spawn(async move |cx| {
 6104                        let file_project_path = project_path?;
 6105                        let abs_path_task = workspace.update(cx, |workspace, cx| {
 6106                            workspace.project().update(cx, |project, cx| {
 6107                                project.resolve_abs_path(abs_path.to_string_lossy().as_ref(), cx)
 6108                            })
 6109                        });
 6110
 6111                        // We only want to open file paths here. If one of the items
 6112                        // here is a directory, it was already opened further above
 6113                        // with a `find_or_create_worktree`.
 6114                        if let Ok(task) = abs_path_task {
 6115                            if task.await.map_or(true, |p| p.is_file()) {
 6116                                return Some((
 6117                                    ix,
 6118                                    workspace
 6119                                        .update_in(cx, |workspace, window, cx| {
 6120                                            workspace.open_path(
 6121                                                file_project_path,
 6122                                                None,
 6123                                                true,
 6124                                                window,
 6125                                                cx,
 6126                                            )
 6127                                        })
 6128                                        .log_err()?
 6129                                        .await,
 6130                                ));
 6131                            }
 6132                        }
 6133                        None
 6134                    })
 6135                });
 6136
 6137        let tasks = tasks.collect::<Vec<_>>();
 6138
 6139        let tasks = futures::future::join_all(tasks);
 6140        for (ix, path_open_result) in tasks.await.into_iter().flatten() {
 6141            opened_items[ix] = Some(path_open_result);
 6142        }
 6143
 6144        Ok(opened_items)
 6145    })
 6146}
 6147
 6148enum ActivateInDirectionTarget {
 6149    Pane(Entity<Pane>),
 6150    Dock(Entity<Dock>),
 6151}
 6152
 6153fn notify_if_database_failed(workspace: WindowHandle<Workspace>, cx: &mut AsyncApp) {
 6154    workspace
 6155        .update(cx, |workspace, _, cx| {
 6156            if (*db::ALL_FILE_DB_FAILED).load(std::sync::atomic::Ordering::Acquire) {
 6157                struct DatabaseFailedNotification;
 6158
 6159                workspace.show_notification(
 6160                    NotificationId::unique::<DatabaseFailedNotification>(),
 6161                    cx,
 6162                    |cx| {
 6163                        cx.new(|cx| {
 6164                            MessageNotification::new("Failed to load the database file.", cx)
 6165                                .primary_message("File an Issue")
 6166                                .primary_icon(IconName::Plus)
 6167                                .primary_on_click(|window, cx| {
 6168                                    window.dispatch_action(Box::new(FileBugReport), cx)
 6169                                })
 6170                        })
 6171                    },
 6172                );
 6173            }
 6174        })
 6175        .log_err();
 6176}
 6177
 6178fn px_with_ui_font_fallback(val: u32, cx: &Context<Workspace>) -> Pixels {
 6179    if val == 0 {
 6180        ThemeSettings::get_global(cx).ui_font_size(cx)
 6181    } else {
 6182        px(val as f32)
 6183    }
 6184}
 6185
 6186fn adjust_active_dock_size_by_px(
 6187    px: Pixels,
 6188    workspace: &mut Workspace,
 6189    window: &mut Window,
 6190    cx: &mut Context<Workspace>,
 6191) {
 6192    let Some(active_dock) = workspace
 6193        .all_docks()
 6194        .into_iter()
 6195        .find(|dock| dock.focus_handle(cx).contains_focused(window, cx))
 6196    else {
 6197        return;
 6198    };
 6199    let dock = active_dock.read(cx);
 6200    let Some(panel_size) = dock.active_panel_size(window, cx) else {
 6201        return;
 6202    };
 6203    let dock_pos = dock.position();
 6204    workspace.adjust_dock_size_by_px(panel_size, dock_pos, px, window, cx);
 6205}
 6206
 6207fn adjust_open_docks_size_by_px(
 6208    px: Pixels,
 6209    workspace: &mut Workspace,
 6210    window: &mut Window,
 6211    cx: &mut Context<Workspace>,
 6212) {
 6213    let docks = workspace
 6214        .all_docks()
 6215        .into_iter()
 6216        .filter_map(|dock| {
 6217            if dock.read(cx).is_open() {
 6218                let dock = dock.read(cx);
 6219                let panel_size = dock.active_panel_size(window, cx)?;
 6220                let dock_pos = dock.position();
 6221                Some((panel_size, dock_pos, px))
 6222            } else {
 6223                None
 6224            }
 6225        })
 6226        .collect::<Vec<_>>();
 6227
 6228    docks
 6229        .into_iter()
 6230        .for_each(|(panel_size, dock_pos, offset)| {
 6231            workspace.adjust_dock_size_by_px(panel_size, dock_pos, offset, window, cx);
 6232        });
 6233}
 6234
 6235impl Focusable for Workspace {
 6236    fn focus_handle(&self, cx: &App) -> FocusHandle {
 6237        self.active_pane.focus_handle(cx)
 6238    }
 6239}
 6240
 6241#[derive(Clone)]
 6242struct DraggedDock(DockPosition);
 6243
 6244impl Render for DraggedDock {
 6245    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
 6246        gpui::Empty
 6247    }
 6248}
 6249
 6250impl Render for Workspace {
 6251    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 6252        let mut context = KeyContext::new_with_defaults();
 6253        context.add("Workspace");
 6254        context.set("keyboard_layout", cx.keyboard_layout().name().to_string());
 6255        if let Some(status) = self
 6256            .debugger_provider
 6257            .as_ref()
 6258            .and_then(|provider| provider.active_thread_state(cx))
 6259        {
 6260            match status {
 6261                ThreadStatus::Running | ThreadStatus::Stepping => {
 6262                    context.add("debugger_running");
 6263                }
 6264                ThreadStatus::Stopped => context.add("debugger_stopped"),
 6265                ThreadStatus::Exited | ThreadStatus::Ended => {}
 6266            }
 6267        }
 6268
 6269        let centered_layout = self.centered_layout
 6270            && self.center.panes().len() == 1
 6271            && self.active_item(cx).is_some();
 6272        let render_padding = |size| {
 6273            (size > 0.0).then(|| {
 6274                div()
 6275                    .h_full()
 6276                    .w(relative(size))
 6277                    .bg(cx.theme().colors().editor_background)
 6278                    .border_color(cx.theme().colors().pane_group_border)
 6279            })
 6280        };
 6281        let paddings = if centered_layout {
 6282            let settings = WorkspaceSettings::get_global(cx).centered_layout;
 6283            (
 6284                render_padding(Self::adjust_padding(settings.left_padding)),
 6285                render_padding(Self::adjust_padding(settings.right_padding)),
 6286            )
 6287        } else {
 6288            (None, None)
 6289        };
 6290        let ui_font = theme::setup_ui_font(window, cx);
 6291
 6292        let theme = cx.theme().clone();
 6293        let colors = theme.colors();
 6294        let notification_entities = self
 6295            .notifications
 6296            .iter()
 6297            .map(|(_, notification)| notification.entity_id())
 6298            .collect::<Vec<_>>();
 6299        let bottom_dock_layout = WorkspaceSettings::get_global(cx).bottom_dock_layout;
 6300
 6301        client_side_decorations(
 6302            self.actions(div(), window, cx)
 6303                .key_context(context)
 6304                .relative()
 6305                .size_full()
 6306                .flex()
 6307                .flex_col()
 6308                .font(ui_font)
 6309                .gap_0()
 6310                .justify_start()
 6311                .items_start()
 6312                .text_color(colors.text)
 6313                .overflow_hidden()
 6314                .children(self.titlebar_item.clone())
 6315                .on_modifiers_changed(move |_, _, cx| {
 6316                    for &id in &notification_entities {
 6317                        cx.notify(id);
 6318                    }
 6319                })
 6320                .child(
 6321                    div()
 6322                        .size_full()
 6323                        .relative()
 6324                        .flex_1()
 6325                        .flex()
 6326                        .flex_col()
 6327                        .child(
 6328                            div()
 6329                                .id("workspace")
 6330                                .bg(colors.background)
 6331                                .relative()
 6332                                .flex_1()
 6333                                .w_full()
 6334                                .flex()
 6335                                .flex_col()
 6336                                .overflow_hidden()
 6337                                .border_t_1()
 6338                                .border_b_1()
 6339                                .border_color(colors.border)
 6340                                .child({
 6341                                    let this = cx.entity();
 6342                                    canvas(
 6343                                        move |bounds, window, cx| {
 6344                                            this.update(cx, |this, cx| {
 6345                                                let bounds_changed = this.bounds != bounds;
 6346                                                this.bounds = bounds;
 6347
 6348                                                if bounds_changed {
 6349                                                    this.left_dock.update(cx, |dock, cx| {
 6350                                                        dock.clamp_panel_size(
 6351                                                            bounds.size.width,
 6352                                                            window,
 6353                                                            cx,
 6354                                                        )
 6355                                                    });
 6356
 6357                                                    this.right_dock.update(cx, |dock, cx| {
 6358                                                        dock.clamp_panel_size(
 6359                                                            bounds.size.width,
 6360                                                            window,
 6361                                                            cx,
 6362                                                        )
 6363                                                    });
 6364
 6365                                                    this.bottom_dock.update(cx, |dock, cx| {
 6366                                                        dock.clamp_panel_size(
 6367                                                            bounds.size.height,
 6368                                                            window,
 6369                                                            cx,
 6370                                                        )
 6371                                                    });
 6372                                                }
 6373                                            })
 6374                                        },
 6375                                        |_, _, _, _| {},
 6376                                    )
 6377                                    .absolute()
 6378                                    .size_full()
 6379                                })
 6380                                .when(self.zoomed.is_none(), |this| {
 6381                                    this.on_drag_move(cx.listener(
 6382                                        move |workspace,
 6383                                              e: &DragMoveEvent<DraggedDock>,
 6384                                              window,
 6385                                              cx| {
 6386                                            if workspace.previous_dock_drag_coordinates
 6387                                                != Some(e.event.position)
 6388                                            {
 6389                                                workspace.previous_dock_drag_coordinates =
 6390                                                    Some(e.event.position);
 6391                                                match e.drag(cx).0 {
 6392                                                    DockPosition::Left => {
 6393                                                        workspace.resize_left_dock(
 6394                                                            e.event.position.x
 6395                                                                - workspace.bounds.left(),
 6396                                                            window,
 6397                                                            cx,
 6398                                                        );
 6399                                                    }
 6400                                                    DockPosition::Right => {
 6401                                                        workspace.resize_right_dock(
 6402                                                            workspace.bounds.right()
 6403                                                                - e.event.position.x,
 6404                                                            window,
 6405                                                            cx,
 6406                                                        );
 6407                                                    }
 6408                                                    DockPosition::Bottom => {
 6409                                                        workspace.resize_bottom_dock(
 6410                                                            workspace.bounds.bottom()
 6411                                                                - e.event.position.y,
 6412                                                            window,
 6413                                                            cx,
 6414                                                        );
 6415                                                    }
 6416                                                };
 6417                                                workspace.serialize_workspace(window, cx);
 6418                                            }
 6419                                        },
 6420                                    ))
 6421                                })
 6422                                .child({
 6423                                    match bottom_dock_layout {
 6424                                        BottomDockLayout::Full => div()
 6425                                            .flex()
 6426                                            .flex_col()
 6427                                            .h_full()
 6428                                            .child(
 6429                                                div()
 6430                                                    .flex()
 6431                                                    .flex_row()
 6432                                                    .flex_1()
 6433                                                    .overflow_hidden()
 6434                                                    .children(self.render_dock(
 6435                                                        DockPosition::Left,
 6436                                                        &self.left_dock,
 6437                                                        window,
 6438                                                        cx,
 6439                                                    ))
 6440                                                    .child(
 6441                                                        div()
 6442                                                            .flex()
 6443                                                            .flex_col()
 6444                                                            .flex_1()
 6445                                                            .overflow_hidden()
 6446                                                            .child(
 6447                                                                h_flex()
 6448                                                                    .flex_1()
 6449                                                                    .when_some(
 6450                                                                        paddings.0,
 6451                                                                        |this, p| {
 6452                                                                            this.child(
 6453                                                                                p.border_r_1(),
 6454                                                                            )
 6455                                                                        },
 6456                                                                    )
 6457                                                                    .child(self.center.render(
 6458                                                                        self.zoomed.as_ref(),
 6459                                                                        &PaneRenderContext {
 6460                                                                            follower_states:
 6461                                                                                &self.follower_states,
 6462                                                                            active_call: self.active_call(),
 6463                                                                            active_pane: &self.active_pane,
 6464                                                                            app_state: &self.app_state,
 6465                                                                            project: &self.project,
 6466                                                                            workspace: &self.weak_self,
 6467                                                                        },
 6468                                                                        window,
 6469                                                                        cx,
 6470                                                                    ))
 6471                                                                    .when_some(
 6472                                                                        paddings.1,
 6473                                                                        |this, p| {
 6474                                                                            this.child(
 6475                                                                                p.border_l_1(),
 6476                                                                            )
 6477                                                                        },
 6478                                                                    ),
 6479                                                            ),
 6480                                                    )
 6481                                                    .children(self.render_dock(
 6482                                                        DockPosition::Right,
 6483                                                        &self.right_dock,
 6484                                                        window,
 6485                                                        cx,
 6486                                                    )),
 6487                                            )
 6488                                            .child(div().w_full().children(self.render_dock(
 6489                                                DockPosition::Bottom,
 6490                                                &self.bottom_dock,
 6491                                                window,
 6492                                                cx
 6493                                            ))),
 6494
 6495                                        BottomDockLayout::LeftAligned => div()
 6496                                            .flex()
 6497                                            .flex_row()
 6498                                            .h_full()
 6499                                            .child(
 6500                                                div()
 6501                                                    .flex()
 6502                                                    .flex_col()
 6503                                                    .flex_1()
 6504                                                    .h_full()
 6505                                                    .child(
 6506                                                        div()
 6507                                                            .flex()
 6508                                                            .flex_row()
 6509                                                            .flex_1()
 6510                                                            .children(self.render_dock(DockPosition::Left, &self.left_dock, window, cx))
 6511                                                            .child(
 6512                                                                div()
 6513                                                                    .flex()
 6514                                                                    .flex_col()
 6515                                                                    .flex_1()
 6516                                                                    .overflow_hidden()
 6517                                                                    .child(
 6518                                                                        h_flex()
 6519                                                                            .flex_1()
 6520                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6521                                                                            .child(self.center.render(
 6522                                                                                self.zoomed.as_ref(),
 6523                                                                                &PaneRenderContext {
 6524                                                                                    follower_states:
 6525                                                                                        &self.follower_states,
 6526                                                                                    active_call: self.active_call(),
 6527                                                                                    active_pane: &self.active_pane,
 6528                                                                                    app_state: &self.app_state,
 6529                                                                                    project: &self.project,
 6530                                                                                    workspace: &self.weak_self,
 6531                                                                                },
 6532                                                                                window,
 6533                                                                                cx,
 6534                                                                            ))
 6535                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6536                                                                    )
 6537                                                            )
 6538                                                    )
 6539                                                    .child(
 6540                                                        div()
 6541                                                            .w_full()
 6542                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6543                                                    ),
 6544                                            )
 6545                                            .children(self.render_dock(
 6546                                                DockPosition::Right,
 6547                                                &self.right_dock,
 6548                                                window,
 6549                                                cx,
 6550                                            )),
 6551
 6552                                        BottomDockLayout::RightAligned => div()
 6553                                            .flex()
 6554                                            .flex_row()
 6555                                            .h_full()
 6556                                            .children(self.render_dock(
 6557                                                DockPosition::Left,
 6558                                                &self.left_dock,
 6559                                                window,
 6560                                                cx,
 6561                                            ))
 6562                                            .child(
 6563                                                div()
 6564                                                    .flex()
 6565                                                    .flex_col()
 6566                                                    .flex_1()
 6567                                                    .h_full()
 6568                                                    .child(
 6569                                                        div()
 6570                                                            .flex()
 6571                                                            .flex_row()
 6572                                                            .flex_1()
 6573                                                            .child(
 6574                                                                div()
 6575                                                                    .flex()
 6576                                                                    .flex_col()
 6577                                                                    .flex_1()
 6578                                                                    .overflow_hidden()
 6579                                                                    .child(
 6580                                                                        h_flex()
 6581                                                                            .flex_1()
 6582                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6583                                                                            .child(self.center.render(
 6584                                                                                self.zoomed.as_ref(),
 6585                                                                                &PaneRenderContext {
 6586                                                                                    follower_states:
 6587                                                                                        &self.follower_states,
 6588                                                                                    active_call: self.active_call(),
 6589                                                                                    active_pane: &self.active_pane,
 6590                                                                                    app_state: &self.app_state,
 6591                                                                                    project: &self.project,
 6592                                                                                    workspace: &self.weak_self,
 6593                                                                                },
 6594                                                                                window,
 6595                                                                                cx,
 6596                                                                            ))
 6597                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6598                                                                    )
 6599                                                            )
 6600                                                            .children(self.render_dock(DockPosition::Right, &self.right_dock, window, cx))
 6601                                                    )
 6602                                                    .child(
 6603                                                        div()
 6604                                                            .w_full()
 6605                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6606                                                    ),
 6607                                            ),
 6608
 6609                                        BottomDockLayout::Contained => div()
 6610                                            .flex()
 6611                                            .flex_row()
 6612                                            .h_full()
 6613                                            .children(self.render_dock(
 6614                                                DockPosition::Left,
 6615                                                &self.left_dock,
 6616                                                window,
 6617                                                cx,
 6618                                            ))
 6619                                            .child(
 6620                                                div()
 6621                                                    .flex()
 6622                                                    .flex_col()
 6623                                                    .flex_1()
 6624                                                    .overflow_hidden()
 6625                                                    .child(
 6626                                                        h_flex()
 6627                                                            .flex_1()
 6628                                                            .when_some(paddings.0, |this, p| {
 6629                                                                this.child(p.border_r_1())
 6630                                                            })
 6631                                                            .child(self.center.render(
 6632                                                                self.zoomed.as_ref(),
 6633                                                                &PaneRenderContext {
 6634                                                                    follower_states:
 6635                                                                        &self.follower_states,
 6636                                                                    active_call: self.active_call(),
 6637                                                                    active_pane: &self.active_pane,
 6638                                                                    app_state: &self.app_state,
 6639                                                                    project: &self.project,
 6640                                                                    workspace: &self.weak_self,
 6641                                                                },
 6642                                                                window,
 6643                                                                cx,
 6644                                                            ))
 6645                                                            .when_some(paddings.1, |this, p| {
 6646                                                                this.child(p.border_l_1())
 6647                                                            }),
 6648                                                    )
 6649                                                    .children(self.render_dock(
 6650                                                        DockPosition::Bottom,
 6651                                                        &self.bottom_dock,
 6652                                                        window,
 6653                                                        cx,
 6654                                                    )),
 6655                                            )
 6656                                            .children(self.render_dock(
 6657                                                DockPosition::Right,
 6658                                                &self.right_dock,
 6659                                                window,
 6660                                                cx,
 6661                                            )),
 6662                                    }
 6663                                })
 6664                                .children(self.zoomed.as_ref().and_then(|view| {
 6665                                    Some(div()
 6666                                        .occlude()
 6667                                        .absolute()
 6668                                        .overflow_hidden()
 6669                                        .border_color(colors.border)
 6670                                        .bg(colors.background)
 6671                                        .child(view.upgrade()?)
 6672                                        .inset_0()
 6673                                        .shadow_lg())
 6674                                }))
 6675                                .children(self.render_notifications(window, cx)),
 6676                        )
 6677                        .child(self.status_bar.clone())
 6678                        .child(self.modal_layer.clone())
 6679                        .child(self.toast_layer.clone()),
 6680                ),
 6681            window,
 6682            cx,
 6683        )
 6684    }
 6685}
 6686
 6687impl WorkspaceStore {
 6688    pub fn new(client: Arc<Client>, cx: &mut Context<Self>) -> Self {
 6689        Self {
 6690            workspaces: Default::default(),
 6691            _subscriptions: vec![
 6692                client.add_request_handler(cx.weak_entity(), Self::handle_follow),
 6693                client.add_message_handler(cx.weak_entity(), Self::handle_update_followers),
 6694            ],
 6695            client,
 6696        }
 6697    }
 6698
 6699    pub fn update_followers(
 6700        &self,
 6701        project_id: Option<u64>,
 6702        update: proto::update_followers::Variant,
 6703        cx: &App,
 6704    ) -> Option<()> {
 6705        let active_call = ActiveCall::try_global(cx)?;
 6706        let room_id = active_call.read(cx).room()?.read(cx).id();
 6707        self.client
 6708            .send(proto::UpdateFollowers {
 6709                room_id,
 6710                project_id,
 6711                variant: Some(update),
 6712            })
 6713            .log_err()
 6714    }
 6715
 6716    pub async fn handle_follow(
 6717        this: Entity<Self>,
 6718        envelope: TypedEnvelope<proto::Follow>,
 6719        mut cx: AsyncApp,
 6720    ) -> Result<proto::FollowResponse> {
 6721        this.update(&mut cx, |this, cx| {
 6722            let follower = Follower {
 6723                project_id: envelope.payload.project_id,
 6724                peer_id: envelope.original_sender_id()?,
 6725            };
 6726
 6727            let mut response = proto::FollowResponse::default();
 6728            this.workspaces.retain(|workspace| {
 6729                workspace
 6730                    .update(cx, |workspace, window, cx| {
 6731                        let handler_response =
 6732                            workspace.handle_follow(follower.project_id, window, cx);
 6733                        if let Some(active_view) = handler_response.active_view.clone() {
 6734                            if workspace.project.read(cx).remote_id() == follower.project_id {
 6735                                response.active_view = Some(active_view)
 6736                            }
 6737                        }
 6738                    })
 6739                    .is_ok()
 6740            });
 6741
 6742            Ok(response)
 6743        })?
 6744    }
 6745
 6746    async fn handle_update_followers(
 6747        this: Entity<Self>,
 6748        envelope: TypedEnvelope<proto::UpdateFollowers>,
 6749        mut cx: AsyncApp,
 6750    ) -> Result<()> {
 6751        let leader_id = envelope.original_sender_id()?;
 6752        let update = envelope.payload;
 6753
 6754        this.update(&mut cx, |this, cx| {
 6755            this.workspaces.retain(|workspace| {
 6756                workspace
 6757                    .update(cx, |workspace, window, cx| {
 6758                        let project_id = workspace.project.read(cx).remote_id();
 6759                        if update.project_id != project_id && update.project_id.is_some() {
 6760                            return;
 6761                        }
 6762                        workspace.handle_update_followers(leader_id, update.clone(), window, cx);
 6763                    })
 6764                    .is_ok()
 6765            });
 6766            Ok(())
 6767        })?
 6768    }
 6769
 6770    pub fn workspaces(&self) -> &HashSet<WindowHandle<Workspace>> {
 6771        &self.workspaces
 6772    }
 6773}
 6774
 6775impl ViewId {
 6776    pub(crate) fn from_proto(message: proto::ViewId) -> Result<Self> {
 6777        Ok(Self {
 6778            creator: message
 6779                .creator
 6780                .map(CollaboratorId::PeerId)
 6781                .context("creator is missing")?,
 6782            id: message.id,
 6783        })
 6784    }
 6785
 6786    pub(crate) fn to_proto(self) -> Option<proto::ViewId> {
 6787        if let CollaboratorId::PeerId(peer_id) = self.creator {
 6788            Some(proto::ViewId {
 6789                creator: Some(peer_id),
 6790                id: self.id,
 6791            })
 6792        } else {
 6793            None
 6794        }
 6795    }
 6796}
 6797
 6798impl FollowerState {
 6799    fn pane(&self) -> &Entity<Pane> {
 6800        self.dock_pane.as_ref().unwrap_or(&self.center_pane)
 6801    }
 6802}
 6803
 6804pub trait WorkspaceHandle {
 6805    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath>;
 6806}
 6807
 6808impl WorkspaceHandle for Entity<Workspace> {
 6809    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath> {
 6810        self.read(cx)
 6811            .worktrees(cx)
 6812            .flat_map(|worktree| {
 6813                let worktree_id = worktree.read(cx).id();
 6814                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
 6815                    worktree_id,
 6816                    path: f.path.clone(),
 6817                })
 6818            })
 6819            .collect::<Vec<_>>()
 6820    }
 6821}
 6822
 6823impl std::fmt::Debug for OpenPaths {
 6824    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
 6825        f.debug_struct("OpenPaths")
 6826            .field("paths", &self.paths)
 6827            .finish()
 6828    }
 6829}
 6830
 6831pub async fn last_opened_workspace_location() -> Option<SerializedWorkspaceLocation> {
 6832    DB.last_workspace().await.log_err().flatten()
 6833}
 6834
 6835pub fn last_session_workspace_locations(
 6836    last_session_id: &str,
 6837    last_session_window_stack: Option<Vec<WindowId>>,
 6838) -> Option<Vec<SerializedWorkspaceLocation>> {
 6839    DB.last_session_workspace_locations(last_session_id, last_session_window_stack)
 6840        .log_err()
 6841}
 6842
 6843actions!(
 6844    collab,
 6845    [
 6846        /// Opens the channel notes for the current call.
 6847        ///
 6848        /// If you want to open a specific channel, use `zed::OpenZedUrl` with a channel notes URL -
 6849        /// can be copied via "Copy link to section" in the context menu of the channel notes
 6850        /// buffer. These URLs look like `https://zed.dev/channel/channel-name-CHANNEL_ID/notes`.
 6851        OpenChannelNotes,
 6852        /// Mutes your microphone.
 6853        Mute,
 6854        /// Deafens yourself (mute both microphone and speakers).
 6855        Deafen,
 6856        /// Leaves the current call.
 6857        LeaveCall,
 6858        /// Shares the current project with collaborators.
 6859        ShareProject,
 6860        /// Shares your screen with collaborators.
 6861        ScreenShare
 6862    ]
 6863);
 6864actions!(
 6865    zed,
 6866    [
 6867        /// Opens the Zed log file.
 6868        OpenLog
 6869    ]
 6870);
 6871
 6872async fn join_channel_internal(
 6873    channel_id: ChannelId,
 6874    app_state: &Arc<AppState>,
 6875    requesting_window: Option<WindowHandle<Workspace>>,
 6876    active_call: &Entity<ActiveCall>,
 6877    cx: &mut AsyncApp,
 6878) -> Result<bool> {
 6879    let (should_prompt, open_room) = active_call.update(cx, |active_call, cx| {
 6880        let Some(room) = active_call.room().map(|room| room.read(cx)) else {
 6881            return (false, None);
 6882        };
 6883
 6884        let already_in_channel = room.channel_id() == Some(channel_id);
 6885        let should_prompt = room.is_sharing_project()
 6886            && !room.remote_participants().is_empty()
 6887            && !already_in_channel;
 6888        let open_room = if already_in_channel {
 6889            active_call.room().cloned()
 6890        } else {
 6891            None
 6892        };
 6893        (should_prompt, open_room)
 6894    })?;
 6895
 6896    if let Some(room) = open_room {
 6897        let task = room.update(cx, |room, cx| {
 6898            if let Some((project, host)) = room.most_active_project(cx) {
 6899                return Some(join_in_room_project(project, host, app_state.clone(), cx));
 6900            }
 6901
 6902            None
 6903        })?;
 6904        if let Some(task) = task {
 6905            task.await?;
 6906        }
 6907        return anyhow::Ok(true);
 6908    }
 6909
 6910    if should_prompt {
 6911        if let Some(workspace) = requesting_window {
 6912            let answer = workspace
 6913                .update(cx, |_, window, cx| {
 6914                    window.prompt(
 6915                        PromptLevel::Warning,
 6916                        "Do you want to switch channels?",
 6917                        Some("Leaving this call will unshare your current project."),
 6918                        &["Yes, Join Channel", "Cancel"],
 6919                        cx,
 6920                    )
 6921                })?
 6922                .await;
 6923
 6924            if answer == Ok(1) {
 6925                return Ok(false);
 6926            }
 6927        } else {
 6928            return Ok(false); // unreachable!() hopefully
 6929        }
 6930    }
 6931
 6932    let client = cx.update(|cx| active_call.read(cx).client())?;
 6933
 6934    let mut client_status = client.status();
 6935
 6936    // this loop will terminate within client::CONNECTION_TIMEOUT seconds.
 6937    'outer: loop {
 6938        let Some(status) = client_status.recv().await else {
 6939            anyhow::bail!("error connecting");
 6940        };
 6941
 6942        match status {
 6943            Status::Connecting
 6944            | Status::Authenticating
 6945            | Status::Authenticated
 6946            | Status::Reconnecting
 6947            | Status::Reauthenticating => continue,
 6948            Status::Connected { .. } => break 'outer,
 6949            Status::SignedOut | Status::AuthenticationError => {
 6950                return Err(ErrorCode::SignedOut.into());
 6951            }
 6952            Status::UpgradeRequired => return Err(ErrorCode::UpgradeRequired.into()),
 6953            Status::ConnectionError | Status::ConnectionLost | Status::ReconnectionError { .. } => {
 6954                return Err(ErrorCode::Disconnected.into());
 6955            }
 6956        }
 6957    }
 6958
 6959    let room = active_call
 6960        .update(cx, |active_call, cx| {
 6961            active_call.join_channel(channel_id, cx)
 6962        })?
 6963        .await?;
 6964
 6965    let Some(room) = room else {
 6966        return anyhow::Ok(true);
 6967    };
 6968
 6969    room.update(cx, |room, _| room.room_update_completed())?
 6970        .await;
 6971
 6972    let task = room.update(cx, |room, cx| {
 6973        if let Some((project, host)) = room.most_active_project(cx) {
 6974            return Some(join_in_room_project(project, host, app_state.clone(), cx));
 6975        }
 6976
 6977        // If you are the first to join a channel, see if you should share your project.
 6978        if room.remote_participants().is_empty() && !room.local_participant_is_guest() {
 6979            if let Some(workspace) = requesting_window {
 6980                let project = workspace.update(cx, |workspace, _, cx| {
 6981                    let project = workspace.project.read(cx);
 6982
 6983                    if !CallSettings::get_global(cx).share_on_join {
 6984                        return None;
 6985                    }
 6986
 6987                    if (project.is_local() || project.is_via_ssh())
 6988                        && project.visible_worktrees(cx).any(|tree| {
 6989                            tree.read(cx)
 6990                                .root_entry()
 6991                                .map_or(false, |entry| entry.is_dir())
 6992                        })
 6993                    {
 6994                        Some(workspace.project.clone())
 6995                    } else {
 6996                        None
 6997                    }
 6998                });
 6999                if let Ok(Some(project)) = project {
 7000                    return Some(cx.spawn(async move |room, cx| {
 7001                        room.update(cx, |room, cx| room.share_project(project, cx))?
 7002                            .await?;
 7003                        Ok(())
 7004                    }));
 7005                }
 7006            }
 7007        }
 7008
 7009        None
 7010    })?;
 7011    if let Some(task) = task {
 7012        task.await?;
 7013        return anyhow::Ok(true);
 7014    }
 7015    anyhow::Ok(false)
 7016}
 7017
 7018pub fn join_channel(
 7019    channel_id: ChannelId,
 7020    app_state: Arc<AppState>,
 7021    requesting_window: Option<WindowHandle<Workspace>>,
 7022    cx: &mut App,
 7023) -> Task<Result<()>> {
 7024    let active_call = ActiveCall::global(cx);
 7025    cx.spawn(async move |cx| {
 7026        let result = join_channel_internal(
 7027            channel_id,
 7028            &app_state,
 7029            requesting_window,
 7030            &active_call,
 7031             cx,
 7032        )
 7033            .await;
 7034
 7035        // join channel succeeded, and opened a window
 7036        if matches!(result, Ok(true)) {
 7037            return anyhow::Ok(());
 7038        }
 7039
 7040        // find an existing workspace to focus and show call controls
 7041        let mut active_window =
 7042            requesting_window.or_else(|| activate_any_workspace_window( cx));
 7043        if active_window.is_none() {
 7044            // no open workspaces, make one to show the error in (blergh)
 7045            let (window_handle, _) = cx
 7046                .update(|cx| {
 7047                    Workspace::new_local(vec![], app_state.clone(), requesting_window, None, cx)
 7048                })?
 7049                .await?;
 7050
 7051            if result.is_ok() {
 7052                cx.update(|cx| {
 7053                    cx.dispatch_action(&OpenChannelNotes);
 7054                }).log_err();
 7055            }
 7056
 7057            active_window = Some(window_handle);
 7058        }
 7059
 7060        if let Err(err) = result {
 7061            log::error!("failed to join channel: {}", err);
 7062            if let Some(active_window) = active_window {
 7063                active_window
 7064                    .update(cx, |_, window, cx| {
 7065                        let detail: SharedString = match err.error_code() {
 7066                            ErrorCode::SignedOut => {
 7067                                "Please sign in to continue.".into()
 7068                            }
 7069                            ErrorCode::UpgradeRequired => {
 7070                                "Your are running an unsupported version of Zed. Please update to continue.".into()
 7071                            }
 7072                            ErrorCode::NoSuchChannel => {
 7073                                "No matching channel was found. Please check the link and try again.".into()
 7074                            }
 7075                            ErrorCode::Forbidden => {
 7076                                "This channel is private, and you do not have access. Please ask someone to add you and try again.".into()
 7077                            }
 7078                            ErrorCode::Disconnected => "Please check your internet connection and try again.".into(),
 7079                            _ => format!("{}\n\nPlease try again.", err).into(),
 7080                        };
 7081                        window.prompt(
 7082                            PromptLevel::Critical,
 7083                            "Failed to join channel",
 7084                            Some(&detail),
 7085                            &["Ok"],
 7086                        cx)
 7087                    })?
 7088                    .await
 7089                    .ok();
 7090            }
 7091        }
 7092
 7093        // return ok, we showed the error to the user.
 7094        anyhow::Ok(())
 7095    })
 7096}
 7097
 7098pub async fn get_any_active_workspace(
 7099    app_state: Arc<AppState>,
 7100    mut cx: AsyncApp,
 7101) -> anyhow::Result<WindowHandle<Workspace>> {
 7102    // find an existing workspace to focus and show call controls
 7103    let active_window = activate_any_workspace_window(&mut cx);
 7104    if active_window.is_none() {
 7105        cx.update(|cx| Workspace::new_local(vec![], app_state.clone(), None, None, cx))?
 7106            .await?;
 7107    }
 7108    activate_any_workspace_window(&mut cx).context("could not open zed")
 7109}
 7110
 7111fn activate_any_workspace_window(cx: &mut AsyncApp) -> Option<WindowHandle<Workspace>> {
 7112    cx.update(|cx| {
 7113        if let Some(workspace_window) = cx
 7114            .active_window()
 7115            .and_then(|window| window.downcast::<Workspace>())
 7116        {
 7117            return Some(workspace_window);
 7118        }
 7119
 7120        for window in cx.windows() {
 7121            if let Some(workspace_window) = window.downcast::<Workspace>() {
 7122                workspace_window
 7123                    .update(cx, |_, window, _| window.activate_window())
 7124                    .ok();
 7125                return Some(workspace_window);
 7126            }
 7127        }
 7128        None
 7129    })
 7130    .ok()
 7131    .flatten()
 7132}
 7133
 7134pub fn local_workspace_windows(cx: &App) -> Vec<WindowHandle<Workspace>> {
 7135    cx.windows()
 7136        .into_iter()
 7137        .filter_map(|window| window.downcast::<Workspace>())
 7138        .filter(|workspace| {
 7139            workspace
 7140                .read(cx)
 7141                .is_ok_and(|workspace| workspace.project.read(cx).is_local())
 7142        })
 7143        .collect()
 7144}
 7145
 7146#[derive(Default)]
 7147pub struct OpenOptions {
 7148    pub visible: Option<OpenVisible>,
 7149    pub focus: Option<bool>,
 7150    pub open_new_workspace: Option<bool>,
 7151    pub replace_window: Option<WindowHandle<Workspace>>,
 7152    pub env: Option<HashMap<String, String>>,
 7153}
 7154
 7155#[allow(clippy::type_complexity)]
 7156pub fn open_paths(
 7157    abs_paths: &[PathBuf],
 7158    app_state: Arc<AppState>,
 7159    open_options: OpenOptions,
 7160    cx: &mut App,
 7161) -> Task<
 7162    anyhow::Result<(
 7163        WindowHandle<Workspace>,
 7164        Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 7165    )>,
 7166> {
 7167    let abs_paths = abs_paths.to_vec();
 7168    let mut existing = None;
 7169    let mut best_match = None;
 7170    let mut open_visible = OpenVisible::All;
 7171
 7172    cx.spawn(async move |cx| {
 7173        if open_options.open_new_workspace != Some(true) {
 7174            let all_paths = abs_paths.iter().map(|path| app_state.fs.metadata(path));
 7175            let all_metadatas = futures::future::join_all(all_paths)
 7176                .await
 7177                .into_iter()
 7178                .filter_map(|result| result.ok().flatten())
 7179                .collect::<Vec<_>>();
 7180
 7181            cx.update(|cx| {
 7182                for window in local_workspace_windows(&cx) {
 7183                    if let Ok(workspace) = window.read(&cx) {
 7184                        let m = workspace.project.read(&cx).visibility_for_paths(
 7185                            &abs_paths,
 7186                            &all_metadatas,
 7187                            open_options.open_new_workspace == None,
 7188                            cx,
 7189                        );
 7190                        if m > best_match {
 7191                            existing = Some(window);
 7192                            best_match = m;
 7193                        } else if best_match.is_none()
 7194                            && open_options.open_new_workspace == Some(false)
 7195                        {
 7196                            existing = Some(window)
 7197                        }
 7198                    }
 7199                }
 7200            })?;
 7201
 7202            if open_options.open_new_workspace.is_none() && existing.is_none() {
 7203                if all_metadatas.iter().all(|file| !file.is_dir) {
 7204                    cx.update(|cx| {
 7205                        if let Some(window) = cx
 7206                            .active_window()
 7207                            .and_then(|window| window.downcast::<Workspace>())
 7208                        {
 7209                            if let Ok(workspace) = window.read(cx) {
 7210                                let project = workspace.project().read(cx);
 7211                                if project.is_local() && !project.is_via_collab() {
 7212                                    existing = Some(window);
 7213                                    open_visible = OpenVisible::None;
 7214                                    return;
 7215                                }
 7216                            }
 7217                        }
 7218                        for window in local_workspace_windows(cx) {
 7219                            if let Ok(workspace) = window.read(cx) {
 7220                                let project = workspace.project().read(cx);
 7221                                if project.is_via_collab() {
 7222                                    continue;
 7223                                }
 7224                                existing = Some(window);
 7225                                open_visible = OpenVisible::None;
 7226                                break;
 7227                            }
 7228                        }
 7229                    })?;
 7230                }
 7231            }
 7232        }
 7233
 7234        if let Some(existing) = existing {
 7235            let open_task = existing
 7236                .update(cx, |workspace, window, cx| {
 7237                    window.activate_window();
 7238                    workspace.open_paths(
 7239                        abs_paths,
 7240                        OpenOptions {
 7241                            visible: Some(open_visible),
 7242                            ..Default::default()
 7243                        },
 7244                        None,
 7245                        window,
 7246                        cx,
 7247                    )
 7248                })?
 7249                .await;
 7250
 7251            _ = existing.update(cx, |workspace, _, cx| {
 7252                for item in open_task.iter().flatten() {
 7253                    if let Err(e) = item {
 7254                        workspace.show_error(&e, cx);
 7255                    }
 7256                }
 7257            });
 7258
 7259            Ok((existing, open_task))
 7260        } else {
 7261            cx.update(move |cx| {
 7262                Workspace::new_local(
 7263                    abs_paths,
 7264                    app_state.clone(),
 7265                    open_options.replace_window,
 7266                    open_options.env,
 7267                    cx,
 7268                )
 7269            })?
 7270            .await
 7271        }
 7272    })
 7273}
 7274
 7275pub fn open_new(
 7276    open_options: OpenOptions,
 7277    app_state: Arc<AppState>,
 7278    cx: &mut App,
 7279    init: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + 'static + Send,
 7280) -> Task<anyhow::Result<()>> {
 7281    let task = Workspace::new_local(Vec::new(), app_state, None, open_options.env, cx);
 7282    cx.spawn(async move |cx| {
 7283        let (workspace, opened_paths) = task.await?;
 7284        workspace.update(cx, |workspace, window, cx| {
 7285            if opened_paths.is_empty() {
 7286                init(workspace, window, cx)
 7287            }
 7288        })?;
 7289        Ok(())
 7290    })
 7291}
 7292
 7293pub fn create_and_open_local_file(
 7294    path: &'static Path,
 7295    window: &mut Window,
 7296    cx: &mut Context<Workspace>,
 7297    default_content: impl 'static + Send + FnOnce() -> Rope,
 7298) -> Task<Result<Box<dyn ItemHandle>>> {
 7299    cx.spawn_in(window, async move |workspace, cx| {
 7300        let fs = workspace.read_with(cx, |workspace, _| workspace.app_state().fs.clone())?;
 7301        if !fs.is_file(path).await {
 7302            fs.create_file(path, Default::default()).await?;
 7303            fs.save(path, &default_content(), Default::default())
 7304                .await?;
 7305        }
 7306
 7307        let mut items = workspace
 7308            .update_in(cx, |workspace, window, cx| {
 7309                workspace.with_local_workspace(window, cx, |workspace, window, cx| {
 7310                    workspace.open_paths(
 7311                        vec![path.to_path_buf()],
 7312                        OpenOptions {
 7313                            visible: Some(OpenVisible::None),
 7314                            ..Default::default()
 7315                        },
 7316                        None,
 7317                        window,
 7318                        cx,
 7319                    )
 7320                })
 7321            })?
 7322            .await?
 7323            .await;
 7324
 7325        let item = items.pop().flatten();
 7326        item.with_context(|| format!("path {path:?} is not a file"))?
 7327    })
 7328}
 7329
 7330pub fn open_ssh_project_with_new_connection(
 7331    window: WindowHandle<Workspace>,
 7332    connection_options: SshConnectionOptions,
 7333    cancel_rx: oneshot::Receiver<()>,
 7334    delegate: Arc<dyn SshClientDelegate>,
 7335    app_state: Arc<AppState>,
 7336    paths: Vec<PathBuf>,
 7337    cx: &mut App,
 7338) -> Task<Result<()>> {
 7339    cx.spawn(async move |cx| {
 7340        let (serialized_ssh_project, workspace_id, serialized_workspace) =
 7341            serialize_ssh_project(connection_options.clone(), paths.clone(), &cx).await?;
 7342
 7343        let session = match cx
 7344            .update(|cx| {
 7345                remote::SshRemoteClient::new(
 7346                    ConnectionIdentifier::Workspace(workspace_id.0),
 7347                    connection_options,
 7348                    cancel_rx,
 7349                    delegate,
 7350                    cx,
 7351                )
 7352            })?
 7353            .await?
 7354        {
 7355            Some(result) => result,
 7356            None => return Ok(()),
 7357        };
 7358
 7359        let project = cx.update(|cx| {
 7360            project::Project::ssh(
 7361                session,
 7362                app_state.client.clone(),
 7363                app_state.node_runtime.clone(),
 7364                app_state.user_store.clone(),
 7365                app_state.languages.clone(),
 7366                app_state.fs.clone(),
 7367                cx,
 7368            )
 7369        })?;
 7370
 7371        open_ssh_project_inner(
 7372            project,
 7373            paths,
 7374            serialized_ssh_project,
 7375            workspace_id,
 7376            serialized_workspace,
 7377            app_state,
 7378            window,
 7379            cx,
 7380        )
 7381        .await
 7382    })
 7383}
 7384
 7385pub fn open_ssh_project_with_existing_connection(
 7386    connection_options: SshConnectionOptions,
 7387    project: Entity<Project>,
 7388    paths: Vec<PathBuf>,
 7389    app_state: Arc<AppState>,
 7390    window: WindowHandle<Workspace>,
 7391    cx: &mut AsyncApp,
 7392) -> Task<Result<()>> {
 7393    cx.spawn(async move |cx| {
 7394        let (serialized_ssh_project, workspace_id, serialized_workspace) =
 7395            serialize_ssh_project(connection_options.clone(), paths.clone(), &cx).await?;
 7396
 7397        open_ssh_project_inner(
 7398            project,
 7399            paths,
 7400            serialized_ssh_project,
 7401            workspace_id,
 7402            serialized_workspace,
 7403            app_state,
 7404            window,
 7405            cx,
 7406        )
 7407        .await
 7408    })
 7409}
 7410
 7411async fn open_ssh_project_inner(
 7412    project: Entity<Project>,
 7413    paths: Vec<PathBuf>,
 7414    serialized_ssh_project: SerializedSshProject,
 7415    workspace_id: WorkspaceId,
 7416    serialized_workspace: Option<SerializedWorkspace>,
 7417    app_state: Arc<AppState>,
 7418    window: WindowHandle<Workspace>,
 7419    cx: &mut AsyncApp,
 7420) -> Result<()> {
 7421    let toolchains = DB.toolchains(workspace_id).await?;
 7422    for (toolchain, worktree_id, path) in toolchains {
 7423        project
 7424            .update(cx, |this, cx| {
 7425                this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 7426            })?
 7427            .await;
 7428    }
 7429    let mut project_paths_to_open = vec![];
 7430    let mut project_path_errors = vec![];
 7431
 7432    for path in paths {
 7433        let result = cx
 7434            .update(|cx| Workspace::project_path_for_path(project.clone(), &path, true, cx))?
 7435            .await;
 7436        match result {
 7437            Ok((_, project_path)) => {
 7438                project_paths_to_open.push((path.clone(), Some(project_path)));
 7439            }
 7440            Err(error) => {
 7441                project_path_errors.push(error);
 7442            }
 7443        };
 7444    }
 7445
 7446    if project_paths_to_open.is_empty() {
 7447        return Err(project_path_errors.pop().context("no paths given")?);
 7448    }
 7449
 7450    if let Some(detach_session_task) = window
 7451        .update(cx, |_workspace, window, cx| {
 7452            cx.spawn_in(window, async move |this, cx| {
 7453                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))
 7454            })
 7455        })
 7456        .ok()
 7457    {
 7458        detach_session_task.await.ok();
 7459    }
 7460
 7461    cx.update_window(window.into(), |_, window, cx| {
 7462        window.replace_root(cx, |window, cx| {
 7463            telemetry::event!("SSH Project Opened");
 7464
 7465            let mut workspace =
 7466                Workspace::new(Some(workspace_id), project, app_state.clone(), window, cx);
 7467            workspace.set_serialized_ssh_project(serialized_ssh_project);
 7468            workspace.update_history(cx);
 7469
 7470            if let Some(ref serialized) = serialized_workspace {
 7471                workspace.centered_layout = serialized.centered_layout;
 7472            }
 7473
 7474            workspace
 7475        });
 7476    })?;
 7477
 7478    window
 7479        .update(cx, |_, window, cx| {
 7480            window.activate_window();
 7481            open_items(serialized_workspace, project_paths_to_open, window, cx)
 7482        })?
 7483        .await?;
 7484
 7485    window.update(cx, |workspace, _, cx| {
 7486        for error in project_path_errors {
 7487            if error.error_code() == proto::ErrorCode::DevServerProjectPathDoesNotExist {
 7488                if let Some(path) = error.error_tag("path") {
 7489                    workspace.show_error(&anyhow!("'{path}' does not exist"), cx)
 7490                }
 7491            } else {
 7492                workspace.show_error(&error, cx)
 7493            }
 7494        }
 7495    })?;
 7496
 7497    Ok(())
 7498}
 7499
 7500fn serialize_ssh_project(
 7501    connection_options: SshConnectionOptions,
 7502    paths: Vec<PathBuf>,
 7503    cx: &AsyncApp,
 7504) -> Task<
 7505    Result<(
 7506        SerializedSshProject,
 7507        WorkspaceId,
 7508        Option<SerializedWorkspace>,
 7509    )>,
 7510> {
 7511    cx.background_spawn(async move {
 7512        let serialized_ssh_project = persistence::DB
 7513            .get_or_create_ssh_project(
 7514                connection_options.host.clone(),
 7515                connection_options.port,
 7516                paths
 7517                    .iter()
 7518                    .map(|path| path.to_string_lossy().to_string())
 7519                    .collect::<Vec<_>>(),
 7520                connection_options.username.clone(),
 7521            )
 7522            .await?;
 7523
 7524        let serialized_workspace =
 7525            persistence::DB.workspace_for_ssh_project(&serialized_ssh_project);
 7526
 7527        let workspace_id = if let Some(workspace_id) =
 7528            serialized_workspace.as_ref().map(|workspace| workspace.id)
 7529        {
 7530            workspace_id
 7531        } else {
 7532            persistence::DB.next_id().await?
 7533        };
 7534
 7535        Ok((serialized_ssh_project, workspace_id, serialized_workspace))
 7536    })
 7537}
 7538
 7539pub fn join_in_room_project(
 7540    project_id: u64,
 7541    follow_user_id: u64,
 7542    app_state: Arc<AppState>,
 7543    cx: &mut App,
 7544) -> Task<Result<()>> {
 7545    let windows = cx.windows();
 7546    cx.spawn(async move |cx| {
 7547        let existing_workspace = windows.into_iter().find_map(|window_handle| {
 7548            window_handle
 7549                .downcast::<Workspace>()
 7550                .and_then(|window_handle| {
 7551                    window_handle
 7552                        .update(cx, |workspace, _window, cx| {
 7553                            if workspace.project().read(cx).remote_id() == Some(project_id) {
 7554                                Some(window_handle)
 7555                            } else {
 7556                                None
 7557                            }
 7558                        })
 7559                        .unwrap_or(None)
 7560                })
 7561        });
 7562
 7563        let workspace = if let Some(existing_workspace) = existing_workspace {
 7564            existing_workspace
 7565        } else {
 7566            let active_call = cx.update(|cx| ActiveCall::global(cx))?;
 7567            let room = active_call
 7568                .read_with(cx, |call, _| call.room().cloned())?
 7569                .context("not in a call")?;
 7570            let project = room
 7571                .update(cx, |room, cx| {
 7572                    room.join_project(
 7573                        project_id,
 7574                        app_state.languages.clone(),
 7575                        app_state.fs.clone(),
 7576                        cx,
 7577                    )
 7578                })?
 7579                .await?;
 7580
 7581            let window_bounds_override = window_bounds_env_override();
 7582            cx.update(|cx| {
 7583                let mut options = (app_state.build_window_options)(None, cx);
 7584                options.window_bounds = window_bounds_override.map(WindowBounds::Windowed);
 7585                cx.open_window(options, |window, cx| {
 7586                    cx.new(|cx| {
 7587                        Workspace::new(Default::default(), project, app_state.clone(), window, cx)
 7588                    })
 7589                })
 7590            })??
 7591        };
 7592
 7593        workspace.update(cx, |workspace, window, cx| {
 7594            cx.activate(true);
 7595            window.activate_window();
 7596
 7597            if let Some(room) = ActiveCall::global(cx).read(cx).room().cloned() {
 7598                let follow_peer_id = room
 7599                    .read(cx)
 7600                    .remote_participants()
 7601                    .iter()
 7602                    .find(|(_, participant)| participant.user.id == follow_user_id)
 7603                    .map(|(_, p)| p.peer_id)
 7604                    .or_else(|| {
 7605                        // If we couldn't follow the given user, follow the host instead.
 7606                        let collaborator = workspace
 7607                            .project()
 7608                            .read(cx)
 7609                            .collaborators()
 7610                            .values()
 7611                            .find(|collaborator| collaborator.is_host)?;
 7612                        Some(collaborator.peer_id)
 7613                    });
 7614
 7615                if let Some(follow_peer_id) = follow_peer_id {
 7616                    workspace.follow(follow_peer_id, window, cx);
 7617                }
 7618            }
 7619        })?;
 7620
 7621        anyhow::Ok(())
 7622    })
 7623}
 7624
 7625pub fn reload(cx: &mut App) {
 7626    let should_confirm = WorkspaceSettings::get_global(cx).confirm_quit;
 7627    let mut workspace_windows = cx
 7628        .windows()
 7629        .into_iter()
 7630        .filter_map(|window| window.downcast::<Workspace>())
 7631        .collect::<Vec<_>>();
 7632
 7633    // If multiple windows have unsaved changes, and need a save prompt,
 7634    // prompt in the active window before switching to a different window.
 7635    workspace_windows.sort_by_key(|window| window.is_active(cx) == Some(false));
 7636
 7637    let mut prompt = None;
 7638    if let (true, Some(window)) = (should_confirm, workspace_windows.first()) {
 7639        prompt = window
 7640            .update(cx, |_, window, cx| {
 7641                window.prompt(
 7642                    PromptLevel::Info,
 7643                    "Are you sure you want to restart?",
 7644                    None,
 7645                    &["Restart", "Cancel"],
 7646                    cx,
 7647                )
 7648            })
 7649            .ok();
 7650    }
 7651
 7652    cx.spawn(async move |cx| {
 7653        if let Some(prompt) = prompt {
 7654            let answer = prompt.await?;
 7655            if answer != 0 {
 7656                return Ok(());
 7657            }
 7658        }
 7659
 7660        // If the user cancels any save prompt, then keep the app open.
 7661        for window in workspace_windows {
 7662            if let Ok(should_close) = window.update(cx, |workspace, window, cx| {
 7663                workspace.prepare_to_close(CloseIntent::Quit, window, cx)
 7664            }) {
 7665                if !should_close.await? {
 7666                    return Ok(());
 7667                }
 7668            }
 7669        }
 7670        cx.update(|cx| cx.restart())
 7671    })
 7672    .detach_and_log_err(cx);
 7673}
 7674
 7675fn parse_pixel_position_env_var(value: &str) -> Option<Point<Pixels>> {
 7676    let mut parts = value.split(',');
 7677    let x: usize = parts.next()?.parse().ok()?;
 7678    let y: usize = parts.next()?.parse().ok()?;
 7679    Some(point(px(x as f32), px(y as f32)))
 7680}
 7681
 7682fn parse_pixel_size_env_var(value: &str) -> Option<Size<Pixels>> {
 7683    let mut parts = value.split(',');
 7684    let width: usize = parts.next()?.parse().ok()?;
 7685    let height: usize = parts.next()?.parse().ok()?;
 7686    Some(size(px(width as f32), px(height as f32)))
 7687}
 7688
 7689/// Add client-side decorations (rounded corners, shadows, resize handling) when appropriate.
 7690pub fn client_side_decorations(
 7691    element: impl IntoElement,
 7692    window: &mut Window,
 7693    cx: &mut App,
 7694) -> Stateful<Div> {
 7695    const BORDER_SIZE: Pixels = px(1.0);
 7696    let decorations = window.window_decorations();
 7697
 7698    match decorations {
 7699        Decorations::Client { .. } => window.set_client_inset(theme::CLIENT_SIDE_DECORATION_SHADOW),
 7700        Decorations::Server { .. } => window.set_client_inset(px(0.0)),
 7701    }
 7702
 7703    struct GlobalResizeEdge(ResizeEdge);
 7704    impl Global for GlobalResizeEdge {}
 7705
 7706    div()
 7707        .id("window-backdrop")
 7708        .bg(transparent_black())
 7709        .map(|div| match decorations {
 7710            Decorations::Server => div,
 7711            Decorations::Client { tiling, .. } => div
 7712                .when(!(tiling.top || tiling.right), |div| {
 7713                    div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7714                })
 7715                .when(!(tiling.top || tiling.left), |div| {
 7716                    div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7717                })
 7718                .when(!(tiling.bottom || tiling.right), |div| {
 7719                    div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7720                })
 7721                .when(!(tiling.bottom || tiling.left), |div| {
 7722                    div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7723                })
 7724                .when(!tiling.top, |div| {
 7725                    div.pt(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7726                })
 7727                .when(!tiling.bottom, |div| {
 7728                    div.pb(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7729                })
 7730                .when(!tiling.left, |div| {
 7731                    div.pl(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7732                })
 7733                .when(!tiling.right, |div| {
 7734                    div.pr(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7735                })
 7736                .on_mouse_move(move |e, window, cx| {
 7737                    let size = window.window_bounds().get_bounds().size;
 7738                    let pos = e.position;
 7739
 7740                    let new_edge =
 7741                        resize_edge(pos, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling);
 7742
 7743                    let edge = cx.try_global::<GlobalResizeEdge>();
 7744                    if new_edge != edge.map(|edge| edge.0) {
 7745                        window
 7746                            .window_handle()
 7747                            .update(cx, |workspace, _, cx| {
 7748                                cx.notify(workspace.entity_id());
 7749                            })
 7750                            .ok();
 7751                    }
 7752                })
 7753                .on_mouse_down(MouseButton::Left, move |e, window, _| {
 7754                    let size = window.window_bounds().get_bounds().size;
 7755                    let pos = e.position;
 7756
 7757                    let edge = match resize_edge(
 7758                        pos,
 7759                        theme::CLIENT_SIDE_DECORATION_SHADOW,
 7760                        size,
 7761                        tiling,
 7762                    ) {
 7763                        Some(value) => value,
 7764                        None => return,
 7765                    };
 7766
 7767                    window.start_window_resize(edge);
 7768                }),
 7769        })
 7770        .size_full()
 7771        .child(
 7772            div()
 7773                .cursor(CursorStyle::Arrow)
 7774                .map(|div| match decorations {
 7775                    Decorations::Server => div,
 7776                    Decorations::Client { tiling } => div
 7777                        .border_color(cx.theme().colors().border)
 7778                        .when(!(tiling.top || tiling.right), |div| {
 7779                            div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7780                        })
 7781                        .when(!(tiling.top || tiling.left), |div| {
 7782                            div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7783                        })
 7784                        .when(!(tiling.bottom || tiling.right), |div| {
 7785                            div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7786                        })
 7787                        .when(!(tiling.bottom || tiling.left), |div| {
 7788                            div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7789                        })
 7790                        .when(!tiling.top, |div| div.border_t(BORDER_SIZE))
 7791                        .when(!tiling.bottom, |div| div.border_b(BORDER_SIZE))
 7792                        .when(!tiling.left, |div| div.border_l(BORDER_SIZE))
 7793                        .when(!tiling.right, |div| div.border_r(BORDER_SIZE))
 7794                        .when(!tiling.is_tiled(), |div| {
 7795                            div.shadow(vec![gpui::BoxShadow {
 7796                                color: Hsla {
 7797                                    h: 0.,
 7798                                    s: 0.,
 7799                                    l: 0.,
 7800                                    a: 0.4,
 7801                                },
 7802                                blur_radius: theme::CLIENT_SIDE_DECORATION_SHADOW / 2.,
 7803                                spread_radius: px(0.),
 7804                                offset: point(px(0.0), px(0.0)),
 7805                            }])
 7806                        }),
 7807                })
 7808                .on_mouse_move(|_e, _, cx| {
 7809                    cx.stop_propagation();
 7810                })
 7811                .size_full()
 7812                .child(element),
 7813        )
 7814        .map(|div| match decorations {
 7815            Decorations::Server => div,
 7816            Decorations::Client { tiling, .. } => div.child(
 7817                canvas(
 7818                    |_bounds, window, _| {
 7819                        window.insert_hitbox(
 7820                            Bounds::new(
 7821                                point(px(0.0), px(0.0)),
 7822                                window.window_bounds().get_bounds().size,
 7823                            ),
 7824                            HitboxBehavior::Normal,
 7825                        )
 7826                    },
 7827                    move |_bounds, hitbox, window, cx| {
 7828                        let mouse = window.mouse_position();
 7829                        let size = window.window_bounds().get_bounds().size;
 7830                        let Some(edge) =
 7831                            resize_edge(mouse, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling)
 7832                        else {
 7833                            return;
 7834                        };
 7835                        cx.set_global(GlobalResizeEdge(edge));
 7836                        window.set_cursor_style(
 7837                            match edge {
 7838                                ResizeEdge::Top | ResizeEdge::Bottom => CursorStyle::ResizeUpDown,
 7839                                ResizeEdge::Left | ResizeEdge::Right => {
 7840                                    CursorStyle::ResizeLeftRight
 7841                                }
 7842                                ResizeEdge::TopLeft | ResizeEdge::BottomRight => {
 7843                                    CursorStyle::ResizeUpLeftDownRight
 7844                                }
 7845                                ResizeEdge::TopRight | ResizeEdge::BottomLeft => {
 7846                                    CursorStyle::ResizeUpRightDownLeft
 7847                                }
 7848                            },
 7849                            &hitbox,
 7850                        );
 7851                    },
 7852                )
 7853                .size_full()
 7854                .absolute(),
 7855            ),
 7856        })
 7857}
 7858
 7859fn resize_edge(
 7860    pos: Point<Pixels>,
 7861    shadow_size: Pixels,
 7862    window_size: Size<Pixels>,
 7863    tiling: Tiling,
 7864) -> Option<ResizeEdge> {
 7865    let bounds = Bounds::new(Point::default(), window_size).inset(shadow_size * 1.5);
 7866    if bounds.contains(&pos) {
 7867        return None;
 7868    }
 7869
 7870    let corner_size = size(shadow_size * 1.5, shadow_size * 1.5);
 7871    let top_left_bounds = Bounds::new(Point::new(px(0.), px(0.)), corner_size);
 7872    if !tiling.top && top_left_bounds.contains(&pos) {
 7873        return Some(ResizeEdge::TopLeft);
 7874    }
 7875
 7876    let top_right_bounds = Bounds::new(
 7877        Point::new(window_size.width - corner_size.width, px(0.)),
 7878        corner_size,
 7879    );
 7880    if !tiling.top && top_right_bounds.contains(&pos) {
 7881        return Some(ResizeEdge::TopRight);
 7882    }
 7883
 7884    let bottom_left_bounds = Bounds::new(
 7885        Point::new(px(0.), window_size.height - corner_size.height),
 7886        corner_size,
 7887    );
 7888    if !tiling.bottom && bottom_left_bounds.contains(&pos) {
 7889        return Some(ResizeEdge::BottomLeft);
 7890    }
 7891
 7892    let bottom_right_bounds = Bounds::new(
 7893        Point::new(
 7894            window_size.width - corner_size.width,
 7895            window_size.height - corner_size.height,
 7896        ),
 7897        corner_size,
 7898    );
 7899    if !tiling.bottom && bottom_right_bounds.contains(&pos) {
 7900        return Some(ResizeEdge::BottomRight);
 7901    }
 7902
 7903    if !tiling.top && pos.y < shadow_size {
 7904        Some(ResizeEdge::Top)
 7905    } else if !tiling.bottom && pos.y > window_size.height - shadow_size {
 7906        Some(ResizeEdge::Bottom)
 7907    } else if !tiling.left && pos.x < shadow_size {
 7908        Some(ResizeEdge::Left)
 7909    } else if !tiling.right && pos.x > window_size.width - shadow_size {
 7910        Some(ResizeEdge::Right)
 7911    } else {
 7912        None
 7913    }
 7914}
 7915
 7916fn join_pane_into_active(
 7917    active_pane: &Entity<Pane>,
 7918    pane: &Entity<Pane>,
 7919    window: &mut Window,
 7920    cx: &mut App,
 7921) {
 7922    if pane == active_pane {
 7923        return;
 7924    } else if pane.read(cx).items_len() == 0 {
 7925        pane.update(cx, |_, cx| {
 7926            cx.emit(pane::Event::Remove {
 7927                focus_on_pane: None,
 7928            });
 7929        })
 7930    } else {
 7931        move_all_items(pane, active_pane, window, cx);
 7932    }
 7933}
 7934
 7935fn move_all_items(
 7936    from_pane: &Entity<Pane>,
 7937    to_pane: &Entity<Pane>,
 7938    window: &mut Window,
 7939    cx: &mut App,
 7940) {
 7941    let destination_is_different = from_pane != to_pane;
 7942    let mut moved_items = 0;
 7943    for (item_ix, item_handle) in from_pane
 7944        .read(cx)
 7945        .items()
 7946        .enumerate()
 7947        .map(|(ix, item)| (ix, item.clone()))
 7948        .collect::<Vec<_>>()
 7949    {
 7950        let ix = item_ix - moved_items;
 7951        if destination_is_different {
 7952            // Close item from previous pane
 7953            from_pane.update(cx, |source, cx| {
 7954                source.remove_item_and_focus_on_pane(ix, false, to_pane.clone(), window, cx);
 7955            });
 7956            moved_items += 1;
 7957        }
 7958
 7959        // This automatically removes duplicate items in the pane
 7960        to_pane.update(cx, |destination, cx| {
 7961            destination.add_item(item_handle, true, true, None, window, cx);
 7962            window.focus(&destination.focus_handle(cx))
 7963        });
 7964    }
 7965}
 7966
 7967pub fn move_item(
 7968    source: &Entity<Pane>,
 7969    destination: &Entity<Pane>,
 7970    item_id_to_move: EntityId,
 7971    destination_index: usize,
 7972    activate: bool,
 7973    window: &mut Window,
 7974    cx: &mut App,
 7975) {
 7976    let Some((item_ix, item_handle)) = source
 7977        .read(cx)
 7978        .items()
 7979        .enumerate()
 7980        .find(|(_, item_handle)| item_handle.item_id() == item_id_to_move)
 7981        .map(|(ix, item)| (ix, item.clone()))
 7982    else {
 7983        // Tab was closed during drag
 7984        return;
 7985    };
 7986
 7987    if source != destination {
 7988        // Close item from previous pane
 7989        source.update(cx, |source, cx| {
 7990            source.remove_item_and_focus_on_pane(item_ix, false, destination.clone(), window, cx);
 7991        });
 7992    }
 7993
 7994    // This automatically removes duplicate items in the pane
 7995    destination.update(cx, |destination, cx| {
 7996        destination.add_item_inner(
 7997            item_handle,
 7998            activate,
 7999            activate,
 8000            activate,
 8001            Some(destination_index),
 8002            window,
 8003            cx,
 8004        );
 8005        if activate {
 8006            window.focus(&destination.focus_handle(cx))
 8007        }
 8008    });
 8009}
 8010
 8011pub fn move_active_item(
 8012    source: &Entity<Pane>,
 8013    destination: &Entity<Pane>,
 8014    focus_destination: bool,
 8015    close_if_empty: bool,
 8016    window: &mut Window,
 8017    cx: &mut App,
 8018) {
 8019    if source == destination {
 8020        return;
 8021    }
 8022    let Some(active_item) = source.read(cx).active_item() else {
 8023        return;
 8024    };
 8025    source.update(cx, |source_pane, cx| {
 8026        let item_id = active_item.item_id();
 8027        source_pane.remove_item(item_id, false, close_if_empty, window, cx);
 8028        destination.update(cx, |target_pane, cx| {
 8029            target_pane.add_item(
 8030                active_item,
 8031                focus_destination,
 8032                focus_destination,
 8033                Some(target_pane.items_len()),
 8034                window,
 8035                cx,
 8036            );
 8037        });
 8038    });
 8039}
 8040
 8041pub fn clone_active_item(
 8042    workspace_id: Option<WorkspaceId>,
 8043    source: &Entity<Pane>,
 8044    destination: &Entity<Pane>,
 8045    focus_destination: bool,
 8046    window: &mut Window,
 8047    cx: &mut App,
 8048) {
 8049    if source == destination {
 8050        return;
 8051    }
 8052    let Some(active_item) = source.read(cx).active_item() else {
 8053        return;
 8054    };
 8055    destination.update(cx, |target_pane, cx| {
 8056        let Some(clone) = active_item.clone_on_split(workspace_id, window, cx) else {
 8057            return;
 8058        };
 8059        target_pane.add_item(
 8060            clone,
 8061            focus_destination,
 8062            focus_destination,
 8063            Some(target_pane.items_len()),
 8064            window,
 8065            cx,
 8066        );
 8067    });
 8068}
 8069
 8070#[derive(Debug)]
 8071pub struct WorkspacePosition {
 8072    pub window_bounds: Option<WindowBounds>,
 8073    pub display: Option<Uuid>,
 8074    pub centered_layout: bool,
 8075}
 8076
 8077pub fn ssh_workspace_position_from_db(
 8078    host: String,
 8079    port: Option<u16>,
 8080    user: Option<String>,
 8081    paths_to_open: &[PathBuf],
 8082    cx: &App,
 8083) -> Task<Result<WorkspacePosition>> {
 8084    let paths = paths_to_open
 8085        .iter()
 8086        .map(|path| path.to_string_lossy().to_string())
 8087        .collect::<Vec<_>>();
 8088
 8089    cx.background_spawn(async move {
 8090        let serialized_ssh_project = persistence::DB
 8091            .get_or_create_ssh_project(host, port, paths, user)
 8092            .await
 8093            .context("fetching serialized ssh project")?;
 8094        let serialized_workspace =
 8095            persistence::DB.workspace_for_ssh_project(&serialized_ssh_project);
 8096
 8097        let (window_bounds, display) = if let Some(bounds) = window_bounds_env_override() {
 8098            (Some(WindowBounds::Windowed(bounds)), None)
 8099        } else {
 8100            let restorable_bounds = serialized_workspace
 8101                .as_ref()
 8102                .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 8103                .or_else(|| {
 8104                    let (display, window_bounds) = DB.last_window().log_err()?;
 8105                    Some((display?, window_bounds?))
 8106                });
 8107
 8108            if let Some((serialized_display, serialized_status)) = restorable_bounds {
 8109                (Some(serialized_status.0), Some(serialized_display))
 8110            } else {
 8111                (None, None)
 8112            }
 8113        };
 8114
 8115        let centered_layout = serialized_workspace
 8116            .as_ref()
 8117            .map(|w| w.centered_layout)
 8118            .unwrap_or(false);
 8119
 8120        Ok(WorkspacePosition {
 8121            window_bounds,
 8122            display,
 8123            centered_layout,
 8124        })
 8125    })
 8126}
 8127
 8128pub fn with_active_or_new_workspace(
 8129    cx: &mut App,
 8130    f: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send + 'static,
 8131) {
 8132    match cx.active_window().and_then(|w| w.downcast::<Workspace>()) {
 8133        Some(workspace) => {
 8134            cx.defer(move |cx| {
 8135                workspace
 8136                    .update(cx, |workspace, window, cx| f(workspace, window, cx))
 8137                    .log_err();
 8138            });
 8139        }
 8140        None => {
 8141            let app_state = AppState::global(cx);
 8142            if let Some(app_state) = app_state.upgrade() {
 8143                open_new(
 8144                    OpenOptions::default(),
 8145                    app_state,
 8146                    cx,
 8147                    move |workspace, window, cx| f(workspace, window, cx),
 8148                )
 8149                .detach_and_log_err(cx);
 8150            }
 8151        }
 8152    }
 8153}
 8154
 8155#[cfg(test)]
 8156mod tests {
 8157    use std::{cell::RefCell, rc::Rc};
 8158
 8159    use super::*;
 8160    use crate::{
 8161        dock::{PanelEvent, test::TestPanel},
 8162        item::{
 8163            ItemEvent,
 8164            test::{TestItem, TestProjectItem},
 8165        },
 8166    };
 8167    use fs::FakeFs;
 8168    use gpui::{
 8169        DismissEvent, Empty, EventEmitter, FocusHandle, Focusable, Render, TestAppContext,
 8170        UpdateGlobal, VisualTestContext, px,
 8171    };
 8172    use project::{Project, ProjectEntryId};
 8173    use serde_json::json;
 8174    use settings::SettingsStore;
 8175
 8176    #[gpui::test]
 8177    async fn test_tab_disambiguation(cx: &mut TestAppContext) {
 8178        init_test(cx);
 8179
 8180        let fs = FakeFs::new(cx.executor());
 8181        let project = Project::test(fs, [], cx).await;
 8182        let (workspace, cx) =
 8183            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8184
 8185        // Adding an item with no ambiguity renders the tab without detail.
 8186        let item1 = cx.new(|cx| {
 8187            let mut item = TestItem::new(cx);
 8188            item.tab_descriptions = Some(vec!["c", "b1/c", "a/b1/c"]);
 8189            item
 8190        });
 8191        workspace.update_in(cx, |workspace, window, cx| {
 8192            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8193        });
 8194        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(0)));
 8195
 8196        // Adding an item that creates ambiguity increases the level of detail on
 8197        // both tabs.
 8198        let item2 = cx.new_window_entity(|_window, cx| {
 8199            let mut item = TestItem::new(cx);
 8200            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8201            item
 8202        });
 8203        workspace.update_in(cx, |workspace, window, cx| {
 8204            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8205        });
 8206        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8207        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8208
 8209        // Adding an item that creates ambiguity increases the level of detail only
 8210        // on the ambiguous tabs. In this case, the ambiguity can't be resolved so
 8211        // we stop at the highest detail available.
 8212        let item3 = cx.new(|cx| {
 8213            let mut item = TestItem::new(cx);
 8214            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8215            item
 8216        });
 8217        workspace.update_in(cx, |workspace, window, cx| {
 8218            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8219        });
 8220        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8221        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8222        item3.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8223    }
 8224
 8225    #[gpui::test]
 8226    async fn test_tracking_active_path(cx: &mut TestAppContext) {
 8227        init_test(cx);
 8228
 8229        let fs = FakeFs::new(cx.executor());
 8230        fs.insert_tree(
 8231            "/root1",
 8232            json!({
 8233                "one.txt": "",
 8234                "two.txt": "",
 8235            }),
 8236        )
 8237        .await;
 8238        fs.insert_tree(
 8239            "/root2",
 8240            json!({
 8241                "three.txt": "",
 8242            }),
 8243        )
 8244        .await;
 8245
 8246        let project = Project::test(fs, ["root1".as_ref()], cx).await;
 8247        let (workspace, cx) =
 8248            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8249        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8250        let worktree_id = project.update(cx, |project, cx| {
 8251            project.worktrees(cx).next().unwrap().read(cx).id()
 8252        });
 8253
 8254        let item1 = cx.new(|cx| {
 8255            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
 8256        });
 8257        let item2 = cx.new(|cx| {
 8258            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "two.txt", cx)])
 8259        });
 8260
 8261        // Add an item to an empty pane
 8262        workspace.update_in(cx, |workspace, window, cx| {
 8263            workspace.add_item_to_active_pane(Box::new(item1), None, true, window, cx)
 8264        });
 8265        project.update(cx, |project, cx| {
 8266            assert_eq!(
 8267                project.active_entry(),
 8268                project
 8269                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
 8270                    .map(|e| e.id)
 8271            );
 8272        });
 8273        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8274
 8275        // Add a second item to a non-empty pane
 8276        workspace.update_in(cx, |workspace, window, cx| {
 8277            workspace.add_item_to_active_pane(Box::new(item2), None, true, window, cx)
 8278        });
 8279        assert_eq!(cx.window_title().as_deref(), Some("root1 — two.txt"));
 8280        project.update(cx, |project, cx| {
 8281            assert_eq!(
 8282                project.active_entry(),
 8283                project
 8284                    .entry_for_path(&(worktree_id, "two.txt").into(), cx)
 8285                    .map(|e| e.id)
 8286            );
 8287        });
 8288
 8289        // Close the active item
 8290        pane.update_in(cx, |pane, window, cx| {
 8291            pane.close_active_item(&Default::default(), window, cx)
 8292        })
 8293        .await
 8294        .unwrap();
 8295        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8296        project.update(cx, |project, cx| {
 8297            assert_eq!(
 8298                project.active_entry(),
 8299                project
 8300                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
 8301                    .map(|e| e.id)
 8302            );
 8303        });
 8304
 8305        // Add a project folder
 8306        project
 8307            .update(cx, |project, cx| {
 8308                project.find_or_create_worktree("root2", true, cx)
 8309            })
 8310            .await
 8311            .unwrap();
 8312        assert_eq!(cx.window_title().as_deref(), Some("root1, root2 — one.txt"));
 8313
 8314        // Remove a project folder
 8315        project.update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
 8316        assert_eq!(cx.window_title().as_deref(), Some("root2 — one.txt"));
 8317    }
 8318
 8319    #[gpui::test]
 8320    async fn test_close_window(cx: &mut TestAppContext) {
 8321        init_test(cx);
 8322
 8323        let fs = FakeFs::new(cx.executor());
 8324        fs.insert_tree("/root", json!({ "one": "" })).await;
 8325
 8326        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8327        let (workspace, cx) =
 8328            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8329
 8330        // When there are no dirty items, there's nothing to do.
 8331        let item1 = cx.new(TestItem::new);
 8332        workspace.update_in(cx, |w, window, cx| {
 8333            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx)
 8334        });
 8335        let task = workspace.update_in(cx, |w, window, cx| {
 8336            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8337        });
 8338        assert!(task.await.unwrap());
 8339
 8340        // When there are dirty untitled items, prompt to save each one. If the user
 8341        // cancels any prompt, then abort.
 8342        let item2 = cx.new(|cx| TestItem::new(cx).with_dirty(true));
 8343        let item3 = cx.new(|cx| {
 8344            TestItem::new(cx)
 8345                .with_dirty(true)
 8346                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8347        });
 8348        workspace.update_in(cx, |w, window, cx| {
 8349            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8350            w.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8351        });
 8352        let task = workspace.update_in(cx, |w, window, cx| {
 8353            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8354        });
 8355        cx.executor().run_until_parked();
 8356        cx.simulate_prompt_answer("Cancel"); // cancel save all
 8357        cx.executor().run_until_parked();
 8358        assert!(!cx.has_pending_prompt());
 8359        assert!(!task.await.unwrap());
 8360    }
 8361
 8362    #[gpui::test]
 8363    async fn test_close_window_with_serializable_items(cx: &mut TestAppContext) {
 8364        init_test(cx);
 8365
 8366        // Register TestItem as a serializable item
 8367        cx.update(|cx| {
 8368            register_serializable_item::<TestItem>(cx);
 8369        });
 8370
 8371        let fs = FakeFs::new(cx.executor());
 8372        fs.insert_tree("/root", json!({ "one": "" })).await;
 8373
 8374        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8375        let (workspace, cx) =
 8376            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8377
 8378        // When there are dirty untitled items, but they can serialize, then there is no prompt.
 8379        let item1 = cx.new(|cx| {
 8380            TestItem::new(cx)
 8381                .with_dirty(true)
 8382                .with_serialize(|| Some(Task::ready(Ok(()))))
 8383        });
 8384        let item2 = cx.new(|cx| {
 8385            TestItem::new(cx)
 8386                .with_dirty(true)
 8387                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8388                .with_serialize(|| Some(Task::ready(Ok(()))))
 8389        });
 8390        workspace.update_in(cx, |w, window, cx| {
 8391            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8392            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8393        });
 8394        let task = workspace.update_in(cx, |w, window, cx| {
 8395            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8396        });
 8397        assert!(task.await.unwrap());
 8398    }
 8399
 8400    #[gpui::test]
 8401    async fn test_close_pane_items(cx: &mut TestAppContext) {
 8402        init_test(cx);
 8403
 8404        let fs = FakeFs::new(cx.executor());
 8405
 8406        let project = Project::test(fs, None, cx).await;
 8407        let (workspace, cx) =
 8408            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8409
 8410        let item1 = cx.new(|cx| {
 8411            TestItem::new(cx)
 8412                .with_dirty(true)
 8413                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 8414        });
 8415        let item2 = cx.new(|cx| {
 8416            TestItem::new(cx)
 8417                .with_dirty(true)
 8418                .with_conflict(true)
 8419                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 8420        });
 8421        let item3 = cx.new(|cx| {
 8422            TestItem::new(cx)
 8423                .with_dirty(true)
 8424                .with_conflict(true)
 8425                .with_project_items(&[dirty_project_item(3, "3.txt", cx)])
 8426        });
 8427        let item4 = cx.new(|cx| {
 8428            TestItem::new(cx).with_dirty(true).with_project_items(&[{
 8429                let project_item = TestProjectItem::new_untitled(cx);
 8430                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8431                project_item
 8432            }])
 8433        });
 8434        let pane = workspace.update_in(cx, |workspace, window, cx| {
 8435            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8436            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8437            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8438            workspace.add_item_to_active_pane(Box::new(item4.clone()), None, true, window, cx);
 8439            workspace.active_pane().clone()
 8440        });
 8441
 8442        let close_items = pane.update_in(cx, |pane, window, cx| {
 8443            pane.activate_item(1, true, true, window, cx);
 8444            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8445            let item1_id = item1.item_id();
 8446            let item3_id = item3.item_id();
 8447            let item4_id = item4.item_id();
 8448            pane.close_items(window, cx, SaveIntent::Close, move |id| {
 8449                [item1_id, item3_id, item4_id].contains(&id)
 8450            })
 8451        });
 8452        cx.executor().run_until_parked();
 8453
 8454        assert!(cx.has_pending_prompt());
 8455        cx.simulate_prompt_answer("Save all");
 8456
 8457        cx.executor().run_until_parked();
 8458
 8459        // Item 1 is saved. There's a prompt to save item 3.
 8460        pane.update(cx, |pane, cx| {
 8461            assert_eq!(item1.read(cx).save_count, 1);
 8462            assert_eq!(item1.read(cx).save_as_count, 0);
 8463            assert_eq!(item1.read(cx).reload_count, 0);
 8464            assert_eq!(pane.items_len(), 3);
 8465            assert_eq!(pane.active_item().unwrap().item_id(), item3.item_id());
 8466        });
 8467        assert!(cx.has_pending_prompt());
 8468
 8469        // Cancel saving item 3.
 8470        cx.simulate_prompt_answer("Discard");
 8471        cx.executor().run_until_parked();
 8472
 8473        // Item 3 is reloaded. There's a prompt to save item 4.
 8474        pane.update(cx, |pane, cx| {
 8475            assert_eq!(item3.read(cx).save_count, 0);
 8476            assert_eq!(item3.read(cx).save_as_count, 0);
 8477            assert_eq!(item3.read(cx).reload_count, 1);
 8478            assert_eq!(pane.items_len(), 2);
 8479            assert_eq!(pane.active_item().unwrap().item_id(), item4.item_id());
 8480        });
 8481
 8482        // There's a prompt for a path for item 4.
 8483        cx.simulate_new_path_selection(|_| Some(Default::default()));
 8484        close_items.await.unwrap();
 8485
 8486        // The requested items are closed.
 8487        pane.update(cx, |pane, cx| {
 8488            assert_eq!(item4.read(cx).save_count, 0);
 8489            assert_eq!(item4.read(cx).save_as_count, 1);
 8490            assert_eq!(item4.read(cx).reload_count, 0);
 8491            assert_eq!(pane.items_len(), 1);
 8492            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8493        });
 8494    }
 8495
 8496    #[gpui::test]
 8497    async fn test_prompting_to_save_only_on_last_item_for_entry(cx: &mut TestAppContext) {
 8498        init_test(cx);
 8499
 8500        let fs = FakeFs::new(cx.executor());
 8501        let project = Project::test(fs, [], cx).await;
 8502        let (workspace, cx) =
 8503            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8504
 8505        // Create several workspace items with single project entries, and two
 8506        // workspace items with multiple project entries.
 8507        let single_entry_items = (0..=4)
 8508            .map(|project_entry_id| {
 8509                cx.new(|cx| {
 8510                    TestItem::new(cx)
 8511                        .with_dirty(true)
 8512                        .with_project_items(&[dirty_project_item(
 8513                            project_entry_id,
 8514                            &format!("{project_entry_id}.txt"),
 8515                            cx,
 8516                        )])
 8517                })
 8518            })
 8519            .collect::<Vec<_>>();
 8520        let item_2_3 = cx.new(|cx| {
 8521            TestItem::new(cx)
 8522                .with_dirty(true)
 8523                .with_singleton(false)
 8524                .with_project_items(&[
 8525                    single_entry_items[2].read(cx).project_items[0].clone(),
 8526                    single_entry_items[3].read(cx).project_items[0].clone(),
 8527                ])
 8528        });
 8529        let item_3_4 = cx.new(|cx| {
 8530            TestItem::new(cx)
 8531                .with_dirty(true)
 8532                .with_singleton(false)
 8533                .with_project_items(&[
 8534                    single_entry_items[3].read(cx).project_items[0].clone(),
 8535                    single_entry_items[4].read(cx).project_items[0].clone(),
 8536                ])
 8537        });
 8538
 8539        // Create two panes that contain the following project entries:
 8540        //   left pane:
 8541        //     multi-entry items:   (2, 3)
 8542        //     single-entry items:  0, 2, 3, 4
 8543        //   right pane:
 8544        //     single-entry items:  4, 1
 8545        //     multi-entry items:   (3, 4)
 8546        let (left_pane, right_pane) = workspace.update_in(cx, |workspace, window, cx| {
 8547            let left_pane = workspace.active_pane().clone();
 8548            workspace.add_item_to_active_pane(Box::new(item_2_3.clone()), None, true, window, cx);
 8549            workspace.add_item_to_active_pane(
 8550                single_entry_items[0].boxed_clone(),
 8551                None,
 8552                true,
 8553                window,
 8554                cx,
 8555            );
 8556            workspace.add_item_to_active_pane(
 8557                single_entry_items[2].boxed_clone(),
 8558                None,
 8559                true,
 8560                window,
 8561                cx,
 8562            );
 8563            workspace.add_item_to_active_pane(
 8564                single_entry_items[3].boxed_clone(),
 8565                None,
 8566                true,
 8567                window,
 8568                cx,
 8569            );
 8570            workspace.add_item_to_active_pane(
 8571                single_entry_items[4].boxed_clone(),
 8572                None,
 8573                true,
 8574                window,
 8575                cx,
 8576            );
 8577
 8578            let right_pane = workspace
 8579                .split_and_clone(left_pane.clone(), SplitDirection::Right, window, cx)
 8580                .unwrap();
 8581
 8582            right_pane.update(cx, |pane, cx| {
 8583                pane.add_item(
 8584                    single_entry_items[1].boxed_clone(),
 8585                    true,
 8586                    true,
 8587                    None,
 8588                    window,
 8589                    cx,
 8590                );
 8591                pane.add_item(Box::new(item_3_4.clone()), true, true, None, window, cx);
 8592            });
 8593
 8594            (left_pane, right_pane)
 8595        });
 8596
 8597        cx.focus(&right_pane);
 8598
 8599        let mut close = right_pane.update_in(cx, |pane, window, cx| {
 8600            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8601                .unwrap()
 8602        });
 8603        cx.executor().run_until_parked();
 8604
 8605        let msg = cx.pending_prompt().unwrap().0;
 8606        assert!(msg.contains("1.txt"));
 8607        assert!(!msg.contains("2.txt"));
 8608        assert!(!msg.contains("3.txt"));
 8609        assert!(!msg.contains("4.txt"));
 8610
 8611        cx.simulate_prompt_answer("Cancel");
 8612        close.await;
 8613
 8614        left_pane
 8615            .update_in(cx, |left_pane, window, cx| {
 8616                left_pane.close_item_by_id(
 8617                    single_entry_items[3].entity_id(),
 8618                    SaveIntent::Skip,
 8619                    window,
 8620                    cx,
 8621                )
 8622            })
 8623            .await
 8624            .unwrap();
 8625
 8626        close = right_pane.update_in(cx, |pane, window, cx| {
 8627            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8628                .unwrap()
 8629        });
 8630        cx.executor().run_until_parked();
 8631
 8632        let details = cx.pending_prompt().unwrap().1;
 8633        assert!(details.contains("1.txt"));
 8634        assert!(!details.contains("2.txt"));
 8635        assert!(details.contains("3.txt"));
 8636        // ideally this assertion could be made, but today we can only
 8637        // save whole items not project items, so the orphaned item 3 causes
 8638        // 4 to be saved too.
 8639        // assert!(!details.contains("4.txt"));
 8640
 8641        cx.simulate_prompt_answer("Save all");
 8642
 8643        cx.executor().run_until_parked();
 8644        close.await;
 8645        right_pane.read_with(cx, |pane, _| {
 8646            assert_eq!(pane.items_len(), 0);
 8647        });
 8648    }
 8649
 8650    #[gpui::test]
 8651    async fn test_autosave(cx: &mut gpui::TestAppContext) {
 8652        init_test(cx);
 8653
 8654        let fs = FakeFs::new(cx.executor());
 8655        let project = Project::test(fs, [], cx).await;
 8656        let (workspace, cx) =
 8657            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8658        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8659
 8660        let item = cx.new(|cx| {
 8661            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8662        });
 8663        let item_id = item.entity_id();
 8664        workspace.update_in(cx, |workspace, window, cx| {
 8665            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8666        });
 8667
 8668        // Autosave on window change.
 8669        item.update(cx, |item, cx| {
 8670            SettingsStore::update_global(cx, |settings, cx| {
 8671                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8672                    settings.autosave = Some(AutosaveSetting::OnWindowChange);
 8673                })
 8674            });
 8675            item.is_dirty = true;
 8676        });
 8677
 8678        // Deactivating the window saves the file.
 8679        cx.deactivate_window();
 8680        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8681
 8682        // Re-activating the window doesn't save the file.
 8683        cx.update(|window, _| window.activate_window());
 8684        cx.executor().run_until_parked();
 8685        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8686
 8687        // Autosave on focus change.
 8688        item.update_in(cx, |item, window, cx| {
 8689            cx.focus_self(window);
 8690            SettingsStore::update_global(cx, |settings, cx| {
 8691                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8692                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
 8693                })
 8694            });
 8695            item.is_dirty = true;
 8696        });
 8697
 8698        // Blurring the item saves the file.
 8699        item.update_in(cx, |_, window, _| window.blur());
 8700        cx.executor().run_until_parked();
 8701        item.read_with(cx, |item, _| assert_eq!(item.save_count, 2));
 8702
 8703        // Deactivating the window still saves the file.
 8704        item.update_in(cx, |item, window, cx| {
 8705            cx.focus_self(window);
 8706            item.is_dirty = true;
 8707        });
 8708        cx.deactivate_window();
 8709        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
 8710
 8711        // Autosave after delay.
 8712        item.update(cx, |item, cx| {
 8713            SettingsStore::update_global(cx, |settings, cx| {
 8714                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8715                    settings.autosave = Some(AutosaveSetting::AfterDelay { milliseconds: 500 });
 8716                })
 8717            });
 8718            item.is_dirty = true;
 8719            cx.emit(ItemEvent::Edit);
 8720        });
 8721
 8722        // Delay hasn't fully expired, so the file is still dirty and unsaved.
 8723        cx.executor().advance_clock(Duration::from_millis(250));
 8724        item.read_with(cx, |item, _| assert_eq!(item.save_count, 3));
 8725
 8726        // After delay expires, the file is saved.
 8727        cx.executor().advance_clock(Duration::from_millis(250));
 8728        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
 8729
 8730        // Autosave on focus change, ensuring closing the tab counts as such.
 8731        item.update(cx, |item, cx| {
 8732            SettingsStore::update_global(cx, |settings, cx| {
 8733                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8734                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
 8735                })
 8736            });
 8737            item.is_dirty = true;
 8738            for project_item in &mut item.project_items {
 8739                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8740            }
 8741        });
 8742
 8743        pane.update_in(cx, |pane, window, cx| {
 8744            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8745        })
 8746        .await
 8747        .unwrap();
 8748        assert!(!cx.has_pending_prompt());
 8749        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8750
 8751        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
 8752        workspace.update_in(cx, |workspace, window, cx| {
 8753            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8754        });
 8755        item.update_in(cx, |item, window, cx| {
 8756            item.project_items[0].update(cx, |item, _| {
 8757                item.entry_id = None;
 8758            });
 8759            item.is_dirty = true;
 8760            window.blur();
 8761        });
 8762        cx.run_until_parked();
 8763        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8764
 8765        // Ensure autosave is prevented for deleted files also when closing the buffer.
 8766        let _close_items = pane.update_in(cx, |pane, window, cx| {
 8767            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8768        });
 8769        cx.run_until_parked();
 8770        assert!(cx.has_pending_prompt());
 8771        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8772    }
 8773
 8774    #[gpui::test]
 8775    async fn test_pane_navigation(cx: &mut gpui::TestAppContext) {
 8776        init_test(cx);
 8777
 8778        let fs = FakeFs::new(cx.executor());
 8779
 8780        let project = Project::test(fs, [], cx).await;
 8781        let (workspace, cx) =
 8782            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8783
 8784        let item = cx.new(|cx| {
 8785            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8786        });
 8787        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8788        let toolbar = pane.read_with(cx, |pane, _| pane.toolbar().clone());
 8789        let toolbar_notify_count = Rc::new(RefCell::new(0));
 8790
 8791        workspace.update_in(cx, |workspace, window, cx| {
 8792            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8793            let toolbar_notification_count = toolbar_notify_count.clone();
 8794            cx.observe_in(&toolbar, window, move |_, _, _, _| {
 8795                *toolbar_notification_count.borrow_mut() += 1
 8796            })
 8797            .detach();
 8798        });
 8799
 8800        pane.read_with(cx, |pane, _| {
 8801            assert!(!pane.can_navigate_backward());
 8802            assert!(!pane.can_navigate_forward());
 8803        });
 8804
 8805        item.update_in(cx, |item, _, cx| {
 8806            item.set_state("one".to_string(), cx);
 8807        });
 8808
 8809        // Toolbar must be notified to re-render the navigation buttons
 8810        assert_eq!(*toolbar_notify_count.borrow(), 1);
 8811
 8812        pane.read_with(cx, |pane, _| {
 8813            assert!(pane.can_navigate_backward());
 8814            assert!(!pane.can_navigate_forward());
 8815        });
 8816
 8817        workspace
 8818            .update_in(cx, |workspace, window, cx| {
 8819                workspace.go_back(pane.downgrade(), window, cx)
 8820            })
 8821            .await
 8822            .unwrap();
 8823
 8824        assert_eq!(*toolbar_notify_count.borrow(), 2);
 8825        pane.read_with(cx, |pane, _| {
 8826            assert!(!pane.can_navigate_backward());
 8827            assert!(pane.can_navigate_forward());
 8828        });
 8829    }
 8830
 8831    #[gpui::test]
 8832    async fn test_toggle_docks_and_panels(cx: &mut gpui::TestAppContext) {
 8833        init_test(cx);
 8834        let fs = FakeFs::new(cx.executor());
 8835
 8836        let project = Project::test(fs, [], cx).await;
 8837        let (workspace, cx) =
 8838            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8839
 8840        let panel = workspace.update_in(cx, |workspace, window, cx| {
 8841            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 8842            workspace.add_panel(panel.clone(), window, cx);
 8843
 8844            workspace
 8845                .right_dock()
 8846                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
 8847
 8848            panel
 8849        });
 8850
 8851        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8852        pane.update_in(cx, |pane, window, cx| {
 8853            let item = cx.new(TestItem::new);
 8854            pane.add_item(Box::new(item), true, true, None, window, cx);
 8855        });
 8856
 8857        // Transfer focus from center to panel
 8858        workspace.update_in(cx, |workspace, window, cx| {
 8859            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8860        });
 8861
 8862        workspace.update_in(cx, |workspace, window, cx| {
 8863            assert!(workspace.right_dock().read(cx).is_open());
 8864            assert!(!panel.is_zoomed(window, cx));
 8865            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8866        });
 8867
 8868        // Transfer focus from panel to center
 8869        workspace.update_in(cx, |workspace, window, cx| {
 8870            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8871        });
 8872
 8873        workspace.update_in(cx, |workspace, window, cx| {
 8874            assert!(workspace.right_dock().read(cx).is_open());
 8875            assert!(!panel.is_zoomed(window, cx));
 8876            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8877        });
 8878
 8879        // Close the dock
 8880        workspace.update_in(cx, |workspace, window, cx| {
 8881            workspace.toggle_dock(DockPosition::Right, window, cx);
 8882        });
 8883
 8884        workspace.update_in(cx, |workspace, window, cx| {
 8885            assert!(!workspace.right_dock().read(cx).is_open());
 8886            assert!(!panel.is_zoomed(window, cx));
 8887            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8888        });
 8889
 8890        // Open the dock
 8891        workspace.update_in(cx, |workspace, window, cx| {
 8892            workspace.toggle_dock(DockPosition::Right, window, cx);
 8893        });
 8894
 8895        workspace.update_in(cx, |workspace, window, cx| {
 8896            assert!(workspace.right_dock().read(cx).is_open());
 8897            assert!(!panel.is_zoomed(window, cx));
 8898            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8899        });
 8900
 8901        // Focus and zoom panel
 8902        panel.update_in(cx, |panel, window, cx| {
 8903            cx.focus_self(window);
 8904            panel.set_zoomed(true, window, cx)
 8905        });
 8906
 8907        workspace.update_in(cx, |workspace, window, cx| {
 8908            assert!(workspace.right_dock().read(cx).is_open());
 8909            assert!(panel.is_zoomed(window, cx));
 8910            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8911        });
 8912
 8913        // Transfer focus to the center closes the dock
 8914        workspace.update_in(cx, |workspace, window, cx| {
 8915            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8916        });
 8917
 8918        workspace.update_in(cx, |workspace, window, cx| {
 8919            assert!(!workspace.right_dock().read(cx).is_open());
 8920            assert!(panel.is_zoomed(window, cx));
 8921            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8922        });
 8923
 8924        // Transferring focus back to the panel keeps it zoomed
 8925        workspace.update_in(cx, |workspace, window, cx| {
 8926            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8927        });
 8928
 8929        workspace.update_in(cx, |workspace, window, cx| {
 8930            assert!(workspace.right_dock().read(cx).is_open());
 8931            assert!(panel.is_zoomed(window, cx));
 8932            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8933        });
 8934
 8935        // Close the dock while it is zoomed
 8936        workspace.update_in(cx, |workspace, window, cx| {
 8937            workspace.toggle_dock(DockPosition::Right, window, cx)
 8938        });
 8939
 8940        workspace.update_in(cx, |workspace, window, cx| {
 8941            assert!(!workspace.right_dock().read(cx).is_open());
 8942            assert!(panel.is_zoomed(window, cx));
 8943            assert!(workspace.zoomed.is_none());
 8944            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8945        });
 8946
 8947        // Opening the dock, when it's zoomed, retains focus
 8948        workspace.update_in(cx, |workspace, window, cx| {
 8949            workspace.toggle_dock(DockPosition::Right, window, cx)
 8950        });
 8951
 8952        workspace.update_in(cx, |workspace, window, cx| {
 8953            assert!(workspace.right_dock().read(cx).is_open());
 8954            assert!(panel.is_zoomed(window, cx));
 8955            assert!(workspace.zoomed.is_some());
 8956            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8957        });
 8958
 8959        // Unzoom and close the panel, zoom the active pane.
 8960        panel.update_in(cx, |panel, window, cx| panel.set_zoomed(false, window, cx));
 8961        workspace.update_in(cx, |workspace, window, cx| {
 8962            workspace.toggle_dock(DockPosition::Right, window, cx)
 8963        });
 8964        pane.update_in(cx, |pane, window, cx| {
 8965            pane.toggle_zoom(&Default::default(), window, cx)
 8966        });
 8967
 8968        // Opening a dock unzooms the pane.
 8969        workspace.update_in(cx, |workspace, window, cx| {
 8970            workspace.toggle_dock(DockPosition::Right, window, cx)
 8971        });
 8972        workspace.update_in(cx, |workspace, window, cx| {
 8973            let pane = pane.read(cx);
 8974            assert!(!pane.is_zoomed());
 8975            assert!(!pane.focus_handle(cx).is_focused(window));
 8976            assert!(workspace.right_dock().read(cx).is_open());
 8977            assert!(workspace.zoomed.is_none());
 8978        });
 8979    }
 8980
 8981    #[gpui::test]
 8982    async fn test_join_pane_into_next(cx: &mut gpui::TestAppContext) {
 8983        init_test(cx);
 8984
 8985        let fs = FakeFs::new(cx.executor());
 8986
 8987        let project = Project::test(fs, None, cx).await;
 8988        let (workspace, cx) =
 8989            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8990
 8991        // Let's arrange the panes like this:
 8992        //
 8993        // +-----------------------+
 8994        // |         top           |
 8995        // +------+--------+-------+
 8996        // | left | center | right |
 8997        // +------+--------+-------+
 8998        // |        bottom         |
 8999        // +-----------------------+
 9000
 9001        let top_item = cx.new(|cx| {
 9002            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "top.txt", cx)])
 9003        });
 9004        let bottom_item = cx.new(|cx| {
 9005            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "bottom.txt", cx)])
 9006        });
 9007        let left_item = cx.new(|cx| {
 9008            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "left.txt", cx)])
 9009        });
 9010        let right_item = cx.new(|cx| {
 9011            TestItem::new(cx).with_project_items(&[TestProjectItem::new(4, "right.txt", cx)])
 9012        });
 9013        let center_item = cx.new(|cx| {
 9014            TestItem::new(cx).with_project_items(&[TestProjectItem::new(5, "center.txt", cx)])
 9015        });
 9016
 9017        let top_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9018            let top_pane_id = workspace.active_pane().entity_id();
 9019            workspace.add_item_to_active_pane(Box::new(top_item.clone()), None, false, window, cx);
 9020            workspace.split_pane(
 9021                workspace.active_pane().clone(),
 9022                SplitDirection::Down,
 9023                window,
 9024                cx,
 9025            );
 9026            top_pane_id
 9027        });
 9028        let bottom_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9029            let bottom_pane_id = workspace.active_pane().entity_id();
 9030            workspace.add_item_to_active_pane(
 9031                Box::new(bottom_item.clone()),
 9032                None,
 9033                false,
 9034                window,
 9035                cx,
 9036            );
 9037            workspace.split_pane(
 9038                workspace.active_pane().clone(),
 9039                SplitDirection::Up,
 9040                window,
 9041                cx,
 9042            );
 9043            bottom_pane_id
 9044        });
 9045        let left_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9046            let left_pane_id = workspace.active_pane().entity_id();
 9047            workspace.add_item_to_active_pane(Box::new(left_item.clone()), None, false, window, cx);
 9048            workspace.split_pane(
 9049                workspace.active_pane().clone(),
 9050                SplitDirection::Right,
 9051                window,
 9052                cx,
 9053            );
 9054            left_pane_id
 9055        });
 9056        let right_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9057            let right_pane_id = workspace.active_pane().entity_id();
 9058            workspace.add_item_to_active_pane(
 9059                Box::new(right_item.clone()),
 9060                None,
 9061                false,
 9062                window,
 9063                cx,
 9064            );
 9065            workspace.split_pane(
 9066                workspace.active_pane().clone(),
 9067                SplitDirection::Left,
 9068                window,
 9069                cx,
 9070            );
 9071            right_pane_id
 9072        });
 9073        let center_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9074            let center_pane_id = workspace.active_pane().entity_id();
 9075            workspace.add_item_to_active_pane(
 9076                Box::new(center_item.clone()),
 9077                None,
 9078                false,
 9079                window,
 9080                cx,
 9081            );
 9082            center_pane_id
 9083        });
 9084        cx.executor().run_until_parked();
 9085
 9086        workspace.update_in(cx, |workspace, window, cx| {
 9087            assert_eq!(center_pane_id, workspace.active_pane().entity_id());
 9088
 9089            // Join into next from center pane into right
 9090            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9091        });
 9092
 9093        workspace.update_in(cx, |workspace, window, cx| {
 9094            let active_pane = workspace.active_pane();
 9095            assert_eq!(right_pane_id, active_pane.entity_id());
 9096            assert_eq!(2, active_pane.read(cx).items_len());
 9097            let item_ids_in_pane =
 9098                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9099            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9100            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9101
 9102            // Join into next from right pane into bottom
 9103            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9104        });
 9105
 9106        workspace.update_in(cx, |workspace, window, cx| {
 9107            let active_pane = workspace.active_pane();
 9108            assert_eq!(bottom_pane_id, active_pane.entity_id());
 9109            assert_eq!(3, active_pane.read(cx).items_len());
 9110            let item_ids_in_pane =
 9111                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9112            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9113            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9114            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9115
 9116            // Join into next from bottom pane into left
 9117            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9118        });
 9119
 9120        workspace.update_in(cx, |workspace, window, cx| {
 9121            let active_pane = workspace.active_pane();
 9122            assert_eq!(left_pane_id, active_pane.entity_id());
 9123            assert_eq!(4, active_pane.read(cx).items_len());
 9124            let item_ids_in_pane =
 9125                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9126            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9127            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9128            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9129            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9130
 9131            // Join into next from left pane into top
 9132            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9133        });
 9134
 9135        workspace.update_in(cx, |workspace, window, cx| {
 9136            let active_pane = workspace.active_pane();
 9137            assert_eq!(top_pane_id, active_pane.entity_id());
 9138            assert_eq!(5, active_pane.read(cx).items_len());
 9139            let item_ids_in_pane =
 9140                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9141            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9142            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9143            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9144            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9145            assert!(item_ids_in_pane.contains(&top_item.item_id()));
 9146
 9147            // Single pane left: no-op
 9148            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx)
 9149        });
 9150
 9151        workspace.update(cx, |workspace, _cx| {
 9152            let active_pane = workspace.active_pane();
 9153            assert_eq!(top_pane_id, active_pane.entity_id());
 9154        });
 9155    }
 9156
 9157    fn add_an_item_to_active_pane(
 9158        cx: &mut VisualTestContext,
 9159        workspace: &Entity<Workspace>,
 9160        item_id: u64,
 9161    ) -> Entity<TestItem> {
 9162        let item = cx.new(|cx| {
 9163            TestItem::new(cx).with_project_items(&[TestProjectItem::new(
 9164                item_id,
 9165                "item{item_id}.txt",
 9166                cx,
 9167            )])
 9168        });
 9169        workspace.update_in(cx, |workspace, window, cx| {
 9170            workspace.add_item_to_active_pane(Box::new(item.clone()), None, false, window, cx);
 9171        });
 9172        return item;
 9173    }
 9174
 9175    fn split_pane(cx: &mut VisualTestContext, workspace: &Entity<Workspace>) -> Entity<Pane> {
 9176        return workspace.update_in(cx, |workspace, window, cx| {
 9177            let new_pane = workspace.split_pane(
 9178                workspace.active_pane().clone(),
 9179                SplitDirection::Right,
 9180                window,
 9181                cx,
 9182            );
 9183            new_pane
 9184        });
 9185    }
 9186
 9187    #[gpui::test]
 9188    async fn test_join_all_panes(cx: &mut gpui::TestAppContext) {
 9189        init_test(cx);
 9190        let fs = FakeFs::new(cx.executor());
 9191        let project = Project::test(fs, None, cx).await;
 9192        let (workspace, cx) =
 9193            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9194
 9195        add_an_item_to_active_pane(cx, &workspace, 1);
 9196        split_pane(cx, &workspace);
 9197        add_an_item_to_active_pane(cx, &workspace, 2);
 9198        split_pane(cx, &workspace); // empty pane
 9199        split_pane(cx, &workspace);
 9200        let last_item = add_an_item_to_active_pane(cx, &workspace, 3);
 9201
 9202        cx.executor().run_until_parked();
 9203
 9204        workspace.update(cx, |workspace, cx| {
 9205            let num_panes = workspace.panes().len();
 9206            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9207            let active_item = workspace
 9208                .active_pane()
 9209                .read(cx)
 9210                .active_item()
 9211                .expect("item is in focus");
 9212
 9213            assert_eq!(num_panes, 4);
 9214            assert_eq!(num_items_in_current_pane, 1);
 9215            assert_eq!(active_item.item_id(), last_item.item_id());
 9216        });
 9217
 9218        workspace.update_in(cx, |workspace, window, cx| {
 9219            workspace.join_all_panes(window, cx);
 9220        });
 9221
 9222        workspace.update(cx, |workspace, cx| {
 9223            let num_panes = workspace.panes().len();
 9224            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9225            let active_item = workspace
 9226                .active_pane()
 9227                .read(cx)
 9228                .active_item()
 9229                .expect("item is in focus");
 9230
 9231            assert_eq!(num_panes, 1);
 9232            assert_eq!(num_items_in_current_pane, 3);
 9233            assert_eq!(active_item.item_id(), last_item.item_id());
 9234        });
 9235    }
 9236    struct TestModal(FocusHandle);
 9237
 9238    impl TestModal {
 9239        fn new(_: &mut Window, cx: &mut Context<Self>) -> Self {
 9240            Self(cx.focus_handle())
 9241        }
 9242    }
 9243
 9244    impl EventEmitter<DismissEvent> for TestModal {}
 9245
 9246    impl Focusable for TestModal {
 9247        fn focus_handle(&self, _cx: &App) -> FocusHandle {
 9248            self.0.clone()
 9249        }
 9250    }
 9251
 9252    impl ModalView for TestModal {}
 9253
 9254    impl Render for TestModal {
 9255        fn render(
 9256            &mut self,
 9257            _window: &mut Window,
 9258            _cx: &mut Context<TestModal>,
 9259        ) -> impl IntoElement {
 9260            div().track_focus(&self.0)
 9261        }
 9262    }
 9263
 9264    #[gpui::test]
 9265    async fn test_panels(cx: &mut gpui::TestAppContext) {
 9266        init_test(cx);
 9267        let fs = FakeFs::new(cx.executor());
 9268
 9269        let project = Project::test(fs, [], cx).await;
 9270        let (workspace, cx) =
 9271            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9272
 9273        let (panel_1, panel_2) = workspace.update_in(cx, |workspace, window, cx| {
 9274            let panel_1 = cx.new(|cx| TestPanel::new(DockPosition::Left, cx));
 9275            workspace.add_panel(panel_1.clone(), window, cx);
 9276            workspace.toggle_dock(DockPosition::Left, window, cx);
 9277            let panel_2 = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 9278            workspace.add_panel(panel_2.clone(), window, cx);
 9279            workspace.toggle_dock(DockPosition::Right, window, cx);
 9280
 9281            let left_dock = workspace.left_dock();
 9282            assert_eq!(
 9283                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9284                panel_1.panel_id()
 9285            );
 9286            assert_eq!(
 9287                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9288                panel_1.size(window, cx)
 9289            );
 9290
 9291            left_dock.update(cx, |left_dock, cx| {
 9292                left_dock.resize_active_panel(Some(px(1337.)), window, cx)
 9293            });
 9294            assert_eq!(
 9295                workspace
 9296                    .right_dock()
 9297                    .read(cx)
 9298                    .visible_panel()
 9299                    .unwrap()
 9300                    .panel_id(),
 9301                panel_2.panel_id(),
 9302            );
 9303
 9304            (panel_1, panel_2)
 9305        });
 9306
 9307        // Move panel_1 to the right
 9308        panel_1.update_in(cx, |panel_1, window, cx| {
 9309            panel_1.set_position(DockPosition::Right, window, cx)
 9310        });
 9311
 9312        workspace.update_in(cx, |workspace, window, cx| {
 9313            // Since panel_1 was visible on the left, it should now be visible now that it's been moved to the right.
 9314            // Since it was the only panel on the left, the left dock should now be closed.
 9315            assert!(!workspace.left_dock().read(cx).is_open());
 9316            assert!(workspace.left_dock().read(cx).visible_panel().is_none());
 9317            let right_dock = workspace.right_dock();
 9318            assert_eq!(
 9319                right_dock.read(cx).visible_panel().unwrap().panel_id(),
 9320                panel_1.panel_id()
 9321            );
 9322            assert_eq!(
 9323                right_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9324                px(1337.)
 9325            );
 9326
 9327            // Now we move panel_2 to the left
 9328            panel_2.set_position(DockPosition::Left, window, cx);
 9329        });
 9330
 9331        workspace.update(cx, |workspace, cx| {
 9332            // Since panel_2 was not visible on the right, we don't open the left dock.
 9333            assert!(!workspace.left_dock().read(cx).is_open());
 9334            // And the right dock is unaffected in its displaying of panel_1
 9335            assert!(workspace.right_dock().read(cx).is_open());
 9336            assert_eq!(
 9337                workspace
 9338                    .right_dock()
 9339                    .read(cx)
 9340                    .visible_panel()
 9341                    .unwrap()
 9342                    .panel_id(),
 9343                panel_1.panel_id(),
 9344            );
 9345        });
 9346
 9347        // Move panel_1 back to the left
 9348        panel_1.update_in(cx, |panel_1, window, cx| {
 9349            panel_1.set_position(DockPosition::Left, window, cx)
 9350        });
 9351
 9352        workspace.update_in(cx, |workspace, window, cx| {
 9353            // Since panel_1 was visible on the right, we open the left dock and make panel_1 active.
 9354            let left_dock = workspace.left_dock();
 9355            assert!(left_dock.read(cx).is_open());
 9356            assert_eq!(
 9357                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9358                panel_1.panel_id()
 9359            );
 9360            assert_eq!(
 9361                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9362                px(1337.)
 9363            );
 9364            // And the right dock should be closed as it no longer has any panels.
 9365            assert!(!workspace.right_dock().read(cx).is_open());
 9366
 9367            // Now we move panel_1 to the bottom
 9368            panel_1.set_position(DockPosition::Bottom, window, cx);
 9369        });
 9370
 9371        workspace.update_in(cx, |workspace, window, cx| {
 9372            // Since panel_1 was visible on the left, we close the left dock.
 9373            assert!(!workspace.left_dock().read(cx).is_open());
 9374            // The bottom dock is sized based on the panel's default size,
 9375            // since the panel orientation changed from vertical to horizontal.
 9376            let bottom_dock = workspace.bottom_dock();
 9377            assert_eq!(
 9378                bottom_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9379                panel_1.size(window, cx),
 9380            );
 9381            // Close bottom dock and move panel_1 back to the left.
 9382            bottom_dock.update(cx, |bottom_dock, cx| {
 9383                bottom_dock.set_open(false, window, cx)
 9384            });
 9385            panel_1.set_position(DockPosition::Left, window, cx);
 9386        });
 9387
 9388        // Emit activated event on panel 1
 9389        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Activate));
 9390
 9391        // Now the left dock is open and panel_1 is active and focused.
 9392        workspace.update_in(cx, |workspace, window, cx| {
 9393            let left_dock = workspace.left_dock();
 9394            assert!(left_dock.read(cx).is_open());
 9395            assert_eq!(
 9396                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9397                panel_1.panel_id(),
 9398            );
 9399            assert!(panel_1.focus_handle(cx).is_focused(window));
 9400        });
 9401
 9402        // Emit closed event on panel 2, which is not active
 9403        panel_2.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9404
 9405        // Wo don't close the left dock, because panel_2 wasn't the active panel
 9406        workspace.update(cx, |workspace, cx| {
 9407            let left_dock = workspace.left_dock();
 9408            assert!(left_dock.read(cx).is_open());
 9409            assert_eq!(
 9410                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9411                panel_1.panel_id(),
 9412            );
 9413        });
 9414
 9415        // Emitting a ZoomIn event shows the panel as zoomed.
 9416        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomIn));
 9417        workspace.read_with(cx, |workspace, _| {
 9418            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9419            assert_eq!(workspace.zoomed_position, Some(DockPosition::Left));
 9420        });
 9421
 9422        // Move panel to another dock while it is zoomed
 9423        panel_1.update_in(cx, |panel, window, cx| {
 9424            panel.set_position(DockPosition::Right, window, cx)
 9425        });
 9426        workspace.read_with(cx, |workspace, _| {
 9427            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9428
 9429            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9430        });
 9431
 9432        // This is a helper for getting a:
 9433        // - valid focus on an element,
 9434        // - that isn't a part of the panes and panels system of the Workspace,
 9435        // - and doesn't trigger the 'on_focus_lost' API.
 9436        let focus_other_view = {
 9437            let workspace = workspace.clone();
 9438            move |cx: &mut VisualTestContext| {
 9439                workspace.update_in(cx, |workspace, window, cx| {
 9440                    if let Some(_) = workspace.active_modal::<TestModal>(cx) {
 9441                        workspace.toggle_modal(window, cx, TestModal::new);
 9442                        workspace.toggle_modal(window, cx, TestModal::new);
 9443                    } else {
 9444                        workspace.toggle_modal(window, cx, TestModal::new);
 9445                    }
 9446                })
 9447            }
 9448        };
 9449
 9450        // If focus is transferred to another view that's not a panel or another pane, we still show
 9451        // the panel as zoomed.
 9452        focus_other_view(cx);
 9453        workspace.read_with(cx, |workspace, _| {
 9454            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9455            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9456        });
 9457
 9458        // If focus is transferred elsewhere in the workspace, the panel is no longer zoomed.
 9459        workspace.update_in(cx, |_workspace, window, cx| {
 9460            cx.focus_self(window);
 9461        });
 9462        workspace.read_with(cx, |workspace, _| {
 9463            assert_eq!(workspace.zoomed, None);
 9464            assert_eq!(workspace.zoomed_position, None);
 9465        });
 9466
 9467        // If focus is transferred again to another view that's not a panel or a pane, we won't
 9468        // show the panel as zoomed because it wasn't zoomed before.
 9469        focus_other_view(cx);
 9470        workspace.read_with(cx, |workspace, _| {
 9471            assert_eq!(workspace.zoomed, None);
 9472            assert_eq!(workspace.zoomed_position, None);
 9473        });
 9474
 9475        // When the panel is activated, it is zoomed again.
 9476        cx.dispatch_action(ToggleRightDock);
 9477        workspace.read_with(cx, |workspace, _| {
 9478            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9479            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9480        });
 9481
 9482        // Emitting a ZoomOut event unzooms the panel.
 9483        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomOut));
 9484        workspace.read_with(cx, |workspace, _| {
 9485            assert_eq!(workspace.zoomed, None);
 9486            assert_eq!(workspace.zoomed_position, None);
 9487        });
 9488
 9489        // Emit closed event on panel 1, which is active
 9490        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9491
 9492        // Now the left dock is closed, because panel_1 was the active panel
 9493        workspace.update(cx, |workspace, cx| {
 9494            let right_dock = workspace.right_dock();
 9495            assert!(!right_dock.read(cx).is_open());
 9496        });
 9497    }
 9498
 9499    #[gpui::test]
 9500    async fn test_no_save_prompt_when_multi_buffer_dirty_items_closed(cx: &mut TestAppContext) {
 9501        init_test(cx);
 9502
 9503        let fs = FakeFs::new(cx.background_executor.clone());
 9504        let project = Project::test(fs, [], cx).await;
 9505        let (workspace, cx) =
 9506            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9507        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9508
 9509        let dirty_regular_buffer = cx.new(|cx| {
 9510            TestItem::new(cx)
 9511                .with_dirty(true)
 9512                .with_label("1.txt")
 9513                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9514        });
 9515        let dirty_regular_buffer_2 = cx.new(|cx| {
 9516            TestItem::new(cx)
 9517                .with_dirty(true)
 9518                .with_label("2.txt")
 9519                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9520        });
 9521        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9522            TestItem::new(cx)
 9523                .with_dirty(true)
 9524                .with_singleton(false)
 9525                .with_label("Fake Project Search")
 9526                .with_project_items(&[
 9527                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9528                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9529                ])
 9530        });
 9531        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9532        workspace.update_in(cx, |workspace, window, cx| {
 9533            workspace.add_item(
 9534                pane.clone(),
 9535                Box::new(dirty_regular_buffer.clone()),
 9536                None,
 9537                false,
 9538                false,
 9539                window,
 9540                cx,
 9541            );
 9542            workspace.add_item(
 9543                pane.clone(),
 9544                Box::new(dirty_regular_buffer_2.clone()),
 9545                None,
 9546                false,
 9547                false,
 9548                window,
 9549                cx,
 9550            );
 9551            workspace.add_item(
 9552                pane.clone(),
 9553                Box::new(dirty_multi_buffer_with_both.clone()),
 9554                None,
 9555                false,
 9556                false,
 9557                window,
 9558                cx,
 9559            );
 9560        });
 9561
 9562        pane.update_in(cx, |pane, window, cx| {
 9563            pane.activate_item(2, true, true, window, cx);
 9564            assert_eq!(
 9565                pane.active_item().unwrap().item_id(),
 9566                multi_buffer_with_both_files_id,
 9567                "Should select the multi buffer in the pane"
 9568            );
 9569        });
 9570        let close_all_but_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9571            pane.close_other_items(
 9572                &CloseOtherItems {
 9573                    save_intent: Some(SaveIntent::Save),
 9574                    close_pinned: true,
 9575                },
 9576                None,
 9577                window,
 9578                cx,
 9579            )
 9580        });
 9581        cx.background_executor.run_until_parked();
 9582        assert!(!cx.has_pending_prompt());
 9583        close_all_but_multi_buffer_task
 9584            .await
 9585            .expect("Closing all buffers but the multi buffer failed");
 9586        pane.update(cx, |pane, cx| {
 9587            assert_eq!(dirty_regular_buffer.read(cx).save_count, 1);
 9588            assert_eq!(dirty_multi_buffer_with_both.read(cx).save_count, 0);
 9589            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 1);
 9590            assert_eq!(pane.items_len(), 1);
 9591            assert_eq!(
 9592                pane.active_item().unwrap().item_id(),
 9593                multi_buffer_with_both_files_id,
 9594                "Should have only the multi buffer left in the pane"
 9595            );
 9596            assert!(
 9597                dirty_multi_buffer_with_both.read(cx).is_dirty,
 9598                "The multi buffer containing the unsaved buffer should still be dirty"
 9599            );
 9600        });
 9601
 9602        dirty_regular_buffer.update(cx, |buffer, cx| {
 9603            buffer.project_items[0].update(cx, |pi, _| pi.is_dirty = true)
 9604        });
 9605
 9606        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9607            pane.close_active_item(
 9608                &CloseActiveItem {
 9609                    save_intent: Some(SaveIntent::Close),
 9610                    close_pinned: false,
 9611                },
 9612                window,
 9613                cx,
 9614            )
 9615        });
 9616        cx.background_executor.run_until_parked();
 9617        assert!(
 9618            cx.has_pending_prompt(),
 9619            "Dirty multi buffer should prompt a save dialog"
 9620        );
 9621        cx.simulate_prompt_answer("Save");
 9622        cx.background_executor.run_until_parked();
 9623        close_multi_buffer_task
 9624            .await
 9625            .expect("Closing the multi buffer failed");
 9626        pane.update(cx, |pane, cx| {
 9627            assert_eq!(
 9628                dirty_multi_buffer_with_both.read(cx).save_count,
 9629                1,
 9630                "Multi buffer item should get be saved"
 9631            );
 9632            // Test impl does not save inner items, so we do not assert them
 9633            assert_eq!(
 9634                pane.items_len(),
 9635                0,
 9636                "No more items should be left in the pane"
 9637            );
 9638            assert!(pane.active_item().is_none());
 9639        });
 9640    }
 9641
 9642    #[gpui::test]
 9643    async fn test_save_prompt_when_dirty_multi_buffer_closed_with_some_of_its_dirty_items_not_present_in_the_pane(
 9644        cx: &mut TestAppContext,
 9645    ) {
 9646        init_test(cx);
 9647
 9648        let fs = FakeFs::new(cx.background_executor.clone());
 9649        let project = Project::test(fs, [], cx).await;
 9650        let (workspace, cx) =
 9651            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9652        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9653
 9654        let dirty_regular_buffer = cx.new(|cx| {
 9655            TestItem::new(cx)
 9656                .with_dirty(true)
 9657                .with_label("1.txt")
 9658                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9659        });
 9660        let dirty_regular_buffer_2 = cx.new(|cx| {
 9661            TestItem::new(cx)
 9662                .with_dirty(true)
 9663                .with_label("2.txt")
 9664                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9665        });
 9666        let clear_regular_buffer = cx.new(|cx| {
 9667            TestItem::new(cx)
 9668                .with_label("3.txt")
 9669                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
 9670        });
 9671
 9672        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9673            TestItem::new(cx)
 9674                .with_dirty(true)
 9675                .with_singleton(false)
 9676                .with_label("Fake Project Search")
 9677                .with_project_items(&[
 9678                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9679                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9680                    clear_regular_buffer.read(cx).project_items[0].clone(),
 9681                ])
 9682        });
 9683        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9684        workspace.update_in(cx, |workspace, window, cx| {
 9685            workspace.add_item(
 9686                pane.clone(),
 9687                Box::new(dirty_regular_buffer.clone()),
 9688                None,
 9689                false,
 9690                false,
 9691                window,
 9692                cx,
 9693            );
 9694            workspace.add_item(
 9695                pane.clone(),
 9696                Box::new(dirty_multi_buffer_with_both.clone()),
 9697                None,
 9698                false,
 9699                false,
 9700                window,
 9701                cx,
 9702            );
 9703        });
 9704
 9705        pane.update_in(cx, |pane, window, cx| {
 9706            pane.activate_item(1, true, true, window, cx);
 9707            assert_eq!(
 9708                pane.active_item().unwrap().item_id(),
 9709                multi_buffer_with_both_files_id,
 9710                "Should select the multi buffer in the pane"
 9711            );
 9712        });
 9713        let _close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9714            pane.close_active_item(
 9715                &CloseActiveItem {
 9716                    save_intent: None,
 9717                    close_pinned: false,
 9718                },
 9719                window,
 9720                cx,
 9721            )
 9722        });
 9723        cx.background_executor.run_until_parked();
 9724        assert!(
 9725            cx.has_pending_prompt(),
 9726            "With one dirty item from the multi buffer not being in the pane, a save prompt should be shown"
 9727        );
 9728    }
 9729
 9730    /// Tests that when `close_on_file_delete` is enabled, files are automatically
 9731    /// closed when they are deleted from disk.
 9732    #[gpui::test]
 9733    async fn test_close_on_disk_deletion_enabled(cx: &mut TestAppContext) {
 9734        init_test(cx);
 9735
 9736        // Enable the close_on_disk_deletion setting
 9737        cx.update_global(|store: &mut SettingsStore, cx| {
 9738            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9739                settings.close_on_file_delete = Some(true);
 9740            });
 9741        });
 9742
 9743        let fs = FakeFs::new(cx.background_executor.clone());
 9744        let project = Project::test(fs, [], cx).await;
 9745        let (workspace, cx) =
 9746            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9747        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9748
 9749        // Create a test item that simulates a file
 9750        let item = cx.new(|cx| {
 9751            TestItem::new(cx)
 9752                .with_label("test.txt")
 9753                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9754        });
 9755
 9756        // Add item to workspace
 9757        workspace.update_in(cx, |workspace, window, cx| {
 9758            workspace.add_item(
 9759                pane.clone(),
 9760                Box::new(item.clone()),
 9761                None,
 9762                false,
 9763                false,
 9764                window,
 9765                cx,
 9766            );
 9767        });
 9768
 9769        // Verify the item is in the pane
 9770        pane.read_with(cx, |pane, _| {
 9771            assert_eq!(pane.items().count(), 1);
 9772        });
 9773
 9774        // Simulate file deletion by setting the item's deleted state
 9775        item.update(cx, |item, _| {
 9776            item.set_has_deleted_file(true);
 9777        });
 9778
 9779        // Emit UpdateTab event to trigger the close behavior
 9780        cx.run_until_parked();
 9781        item.update(cx, |_, cx| {
 9782            cx.emit(ItemEvent::UpdateTab);
 9783        });
 9784
 9785        // Allow the close operation to complete
 9786        cx.run_until_parked();
 9787
 9788        // Verify the item was automatically closed
 9789        pane.read_with(cx, |pane, _| {
 9790            assert_eq!(
 9791                pane.items().count(),
 9792                0,
 9793                "Item should be automatically closed when file is deleted"
 9794            );
 9795        });
 9796    }
 9797
 9798    /// Tests that when `close_on_file_delete` is disabled (default), files remain
 9799    /// open with a strikethrough when they are deleted from disk.
 9800    #[gpui::test]
 9801    async fn test_close_on_disk_deletion_disabled(cx: &mut TestAppContext) {
 9802        init_test(cx);
 9803
 9804        // Ensure close_on_disk_deletion is disabled (default)
 9805        cx.update_global(|store: &mut SettingsStore, cx| {
 9806            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9807                settings.close_on_file_delete = Some(false);
 9808            });
 9809        });
 9810
 9811        let fs = FakeFs::new(cx.background_executor.clone());
 9812        let project = Project::test(fs, [], cx).await;
 9813        let (workspace, cx) =
 9814            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9815        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9816
 9817        // Create a test item that simulates a file
 9818        let item = cx.new(|cx| {
 9819            TestItem::new(cx)
 9820                .with_label("test.txt")
 9821                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9822        });
 9823
 9824        // Add item to workspace
 9825        workspace.update_in(cx, |workspace, window, cx| {
 9826            workspace.add_item(
 9827                pane.clone(),
 9828                Box::new(item.clone()),
 9829                None,
 9830                false,
 9831                false,
 9832                window,
 9833                cx,
 9834            );
 9835        });
 9836
 9837        // Verify the item is in the pane
 9838        pane.read_with(cx, |pane, _| {
 9839            assert_eq!(pane.items().count(), 1);
 9840        });
 9841
 9842        // Simulate file deletion
 9843        item.update(cx, |item, _| {
 9844            item.set_has_deleted_file(true);
 9845        });
 9846
 9847        // Emit UpdateTab event
 9848        cx.run_until_parked();
 9849        item.update(cx, |_, cx| {
 9850            cx.emit(ItemEvent::UpdateTab);
 9851        });
 9852
 9853        // Allow any potential close operation to complete
 9854        cx.run_until_parked();
 9855
 9856        // Verify the item remains open (with strikethrough)
 9857        pane.read_with(cx, |pane, _| {
 9858            assert_eq!(
 9859                pane.items().count(),
 9860                1,
 9861                "Item should remain open when close_on_disk_deletion is disabled"
 9862            );
 9863        });
 9864
 9865        // Verify the item shows as deleted
 9866        item.read_with(cx, |item, _| {
 9867            assert!(
 9868                item.has_deleted_file,
 9869                "Item should be marked as having deleted file"
 9870            );
 9871        });
 9872    }
 9873
 9874    /// Tests that dirty files are not automatically closed when deleted from disk,
 9875    /// even when `close_on_file_delete` is enabled. This ensures users don't lose
 9876    /// unsaved changes without being prompted.
 9877    #[gpui::test]
 9878    async fn test_close_on_disk_deletion_with_dirty_file(cx: &mut TestAppContext) {
 9879        init_test(cx);
 9880
 9881        // Enable the close_on_file_delete setting
 9882        cx.update_global(|store: &mut SettingsStore, cx| {
 9883            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9884                settings.close_on_file_delete = Some(true);
 9885            });
 9886        });
 9887
 9888        let fs = FakeFs::new(cx.background_executor.clone());
 9889        let project = Project::test(fs, [], cx).await;
 9890        let (workspace, cx) =
 9891            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9892        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9893
 9894        // Create a dirty test item
 9895        let item = cx.new(|cx| {
 9896            TestItem::new(cx)
 9897                .with_dirty(true)
 9898                .with_label("test.txt")
 9899                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9900        });
 9901
 9902        // Add item to workspace
 9903        workspace.update_in(cx, |workspace, window, cx| {
 9904            workspace.add_item(
 9905                pane.clone(),
 9906                Box::new(item.clone()),
 9907                None,
 9908                false,
 9909                false,
 9910                window,
 9911                cx,
 9912            );
 9913        });
 9914
 9915        // Simulate file deletion
 9916        item.update(cx, |item, _| {
 9917            item.set_has_deleted_file(true);
 9918        });
 9919
 9920        // Emit UpdateTab event to trigger the close behavior
 9921        cx.run_until_parked();
 9922        item.update(cx, |_, cx| {
 9923            cx.emit(ItemEvent::UpdateTab);
 9924        });
 9925
 9926        // Allow any potential close operation to complete
 9927        cx.run_until_parked();
 9928
 9929        // Verify the item remains open (dirty files are not auto-closed)
 9930        pane.read_with(cx, |pane, _| {
 9931            assert_eq!(
 9932                pane.items().count(),
 9933                1,
 9934                "Dirty items should not be automatically closed even when file is deleted"
 9935            );
 9936        });
 9937
 9938        // Verify the item is marked as deleted and still dirty
 9939        item.read_with(cx, |item, _| {
 9940            assert!(
 9941                item.has_deleted_file,
 9942                "Item should be marked as having deleted file"
 9943            );
 9944            assert!(item.is_dirty, "Item should still be dirty");
 9945        });
 9946    }
 9947
 9948    /// Tests that navigation history is cleaned up when files are auto-closed
 9949    /// due to deletion from disk.
 9950    #[gpui::test]
 9951    async fn test_close_on_disk_deletion_cleans_navigation_history(cx: &mut TestAppContext) {
 9952        init_test(cx);
 9953
 9954        // Enable the close_on_file_delete setting
 9955        cx.update_global(|store: &mut SettingsStore, cx| {
 9956            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9957                settings.close_on_file_delete = Some(true);
 9958            });
 9959        });
 9960
 9961        let fs = FakeFs::new(cx.background_executor.clone());
 9962        let project = Project::test(fs, [], cx).await;
 9963        let (workspace, cx) =
 9964            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9965        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9966
 9967        // Create test items
 9968        let item1 = cx.new(|cx| {
 9969            TestItem::new(cx)
 9970                .with_label("test1.txt")
 9971                .with_project_items(&[TestProjectItem::new(1, "test1.txt", cx)])
 9972        });
 9973        let item1_id = item1.item_id();
 9974
 9975        let item2 = cx.new(|cx| {
 9976            TestItem::new(cx)
 9977                .with_label("test2.txt")
 9978                .with_project_items(&[TestProjectItem::new(2, "test2.txt", cx)])
 9979        });
 9980
 9981        // Add items to workspace
 9982        workspace.update_in(cx, |workspace, window, cx| {
 9983            workspace.add_item(
 9984                pane.clone(),
 9985                Box::new(item1.clone()),
 9986                None,
 9987                false,
 9988                false,
 9989                window,
 9990                cx,
 9991            );
 9992            workspace.add_item(
 9993                pane.clone(),
 9994                Box::new(item2.clone()),
 9995                None,
 9996                false,
 9997                false,
 9998                window,
 9999                cx,
10000            );
10001        });
10002
10003        // Activate item1 to ensure it gets navigation entries
10004        pane.update_in(cx, |pane, window, cx| {
10005            pane.activate_item(0, true, true, window, cx);
10006        });
10007
10008        // Switch to item2 and back to create navigation history
10009        pane.update_in(cx, |pane, window, cx| {
10010            pane.activate_item(1, true, true, window, cx);
10011        });
10012        cx.run_until_parked();
10013
10014        pane.update_in(cx, |pane, window, cx| {
10015            pane.activate_item(0, true, true, window, cx);
10016        });
10017        cx.run_until_parked();
10018
10019        // Simulate file deletion for item1
10020        item1.update(cx, |item, _| {
10021            item.set_has_deleted_file(true);
10022        });
10023
10024        // Emit UpdateTab event to trigger the close behavior
10025        item1.update(cx, |_, cx| {
10026            cx.emit(ItemEvent::UpdateTab);
10027        });
10028        cx.run_until_parked();
10029
10030        // Verify item1 was closed
10031        pane.read_with(cx, |pane, _| {
10032            assert_eq!(
10033                pane.items().count(),
10034                1,
10035                "Should have 1 item remaining after auto-close"
10036            );
10037        });
10038
10039        // Check navigation history after close
10040        let has_item = pane.read_with(cx, |pane, cx| {
10041            let mut has_item = false;
10042            pane.nav_history().for_each_entry(cx, |entry, _| {
10043                if entry.item.id() == item1_id {
10044                    has_item = true;
10045                }
10046            });
10047            has_item
10048        });
10049
10050        assert!(
10051            !has_item,
10052            "Navigation history should not contain closed item entries"
10053        );
10054    }
10055
10056    #[gpui::test]
10057    async fn test_no_save_prompt_when_dirty_multi_buffer_closed_with_all_of_its_dirty_items_present_in_the_pane(
10058        cx: &mut TestAppContext,
10059    ) {
10060        init_test(cx);
10061
10062        let fs = FakeFs::new(cx.background_executor.clone());
10063        let project = Project::test(fs, [], cx).await;
10064        let (workspace, cx) =
10065            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10066        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10067
10068        let dirty_regular_buffer = cx.new(|cx| {
10069            TestItem::new(cx)
10070                .with_dirty(true)
10071                .with_label("1.txt")
10072                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10073        });
10074        let dirty_regular_buffer_2 = cx.new(|cx| {
10075            TestItem::new(cx)
10076                .with_dirty(true)
10077                .with_label("2.txt")
10078                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10079        });
10080        let clear_regular_buffer = cx.new(|cx| {
10081            TestItem::new(cx)
10082                .with_label("3.txt")
10083                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
10084        });
10085
10086        let dirty_multi_buffer = cx.new(|cx| {
10087            TestItem::new(cx)
10088                .with_dirty(true)
10089                .with_singleton(false)
10090                .with_label("Fake Project Search")
10091                .with_project_items(&[
10092                    dirty_regular_buffer.read(cx).project_items[0].clone(),
10093                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
10094                    clear_regular_buffer.read(cx).project_items[0].clone(),
10095                ])
10096        });
10097        workspace.update_in(cx, |workspace, window, cx| {
10098            workspace.add_item(
10099                pane.clone(),
10100                Box::new(dirty_regular_buffer.clone()),
10101                None,
10102                false,
10103                false,
10104                window,
10105                cx,
10106            );
10107            workspace.add_item(
10108                pane.clone(),
10109                Box::new(dirty_regular_buffer_2.clone()),
10110                None,
10111                false,
10112                false,
10113                window,
10114                cx,
10115            );
10116            workspace.add_item(
10117                pane.clone(),
10118                Box::new(dirty_multi_buffer.clone()),
10119                None,
10120                false,
10121                false,
10122                window,
10123                cx,
10124            );
10125        });
10126
10127        pane.update_in(cx, |pane, window, cx| {
10128            pane.activate_item(2, true, true, window, cx);
10129            assert_eq!(
10130                pane.active_item().unwrap().item_id(),
10131                dirty_multi_buffer.item_id(),
10132                "Should select the multi buffer in the pane"
10133            );
10134        });
10135        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
10136            pane.close_active_item(
10137                &CloseActiveItem {
10138                    save_intent: None,
10139                    close_pinned: false,
10140                },
10141                window,
10142                cx,
10143            )
10144        });
10145        cx.background_executor.run_until_parked();
10146        assert!(
10147            !cx.has_pending_prompt(),
10148            "All dirty items from the multi buffer are in the pane still, no save prompts should be shown"
10149        );
10150        close_multi_buffer_task
10151            .await
10152            .expect("Closing multi buffer failed");
10153        pane.update(cx, |pane, cx| {
10154            assert_eq!(dirty_regular_buffer.read(cx).save_count, 0);
10155            assert_eq!(dirty_multi_buffer.read(cx).save_count, 0);
10156            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 0);
10157            assert_eq!(
10158                pane.items()
10159                    .map(|item| item.item_id())
10160                    .sorted()
10161                    .collect::<Vec<_>>(),
10162                vec![
10163                    dirty_regular_buffer.item_id(),
10164                    dirty_regular_buffer_2.item_id(),
10165                ],
10166                "Should have no multi buffer left in the pane"
10167            );
10168            assert!(dirty_regular_buffer.read(cx).is_dirty);
10169            assert!(dirty_regular_buffer_2.read(cx).is_dirty);
10170        });
10171    }
10172
10173    #[gpui::test]
10174    async fn test_move_focused_panel_to_next_position(cx: &mut gpui::TestAppContext) {
10175        init_test(cx);
10176        let fs = FakeFs::new(cx.executor());
10177        let project = Project::test(fs, [], cx).await;
10178        let (workspace, cx) =
10179            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10180
10181        // Add a new panel to the right dock, opening the dock and setting the
10182        // focus to the new panel.
10183        let panel = workspace.update_in(cx, |workspace, window, cx| {
10184            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
10185            workspace.add_panel(panel.clone(), window, cx);
10186
10187            workspace
10188                .right_dock()
10189                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
10190
10191            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10192
10193            panel
10194        });
10195
10196        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10197        // panel to the next valid position which, in this case, is the left
10198        // dock.
10199        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10200        workspace.update(cx, |workspace, cx| {
10201            assert!(workspace.left_dock().read(cx).is_open());
10202            assert_eq!(panel.read(cx).position, DockPosition::Left);
10203        });
10204
10205        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10206        // panel to the next valid position which, in this case, is the bottom
10207        // dock.
10208        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10209        workspace.update(cx, |workspace, cx| {
10210            assert!(workspace.bottom_dock().read(cx).is_open());
10211            assert_eq!(panel.read(cx).position, DockPosition::Bottom);
10212        });
10213
10214        // Dispatch the `MoveFocusedPanelToNextPosition` action again, this time
10215        // around moving the panel to its initial position, the right dock.
10216        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10217        workspace.update(cx, |workspace, cx| {
10218            assert!(workspace.right_dock().read(cx).is_open());
10219            assert_eq!(panel.read(cx).position, DockPosition::Right);
10220        });
10221
10222        // Remove focus from the panel, ensuring that, if the panel is not
10223        // focused, the `MoveFocusedPanelToNextPosition` action does not update
10224        // the panel's position, so the panel is still in the right dock.
10225        workspace.update_in(cx, |workspace, window, cx| {
10226            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10227        });
10228
10229        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10230        workspace.update(cx, |workspace, cx| {
10231            assert!(workspace.right_dock().read(cx).is_open());
10232            assert_eq!(panel.read(cx).position, DockPosition::Right);
10233        });
10234    }
10235
10236    #[gpui::test]
10237    async fn test_moving_items_create_panes(cx: &mut TestAppContext) {
10238        init_test(cx);
10239
10240        let fs = FakeFs::new(cx.executor());
10241        let project = Project::test(fs, [], cx).await;
10242        let (workspace, cx) =
10243            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10244
10245        let item_1 = cx.new(|cx| {
10246            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10247        });
10248        workspace.update_in(cx, |workspace, window, cx| {
10249            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10250            workspace.move_item_to_pane_in_direction(
10251                &MoveItemToPaneInDirection {
10252                    direction: SplitDirection::Right,
10253                    focus: true,
10254                    clone: false,
10255                },
10256                window,
10257                cx,
10258            );
10259            workspace.move_item_to_pane_at_index(
10260                &MoveItemToPane {
10261                    destination: 3,
10262                    focus: true,
10263                    clone: false,
10264                },
10265                window,
10266                cx,
10267            );
10268
10269            assert_eq!(workspace.panes.len(), 1, "No new panes were created");
10270            assert_eq!(
10271                pane_items_paths(&workspace.active_pane, cx),
10272                vec!["first.txt".to_string()],
10273                "Single item was not moved anywhere"
10274            );
10275        });
10276
10277        let item_2 = cx.new(|cx| {
10278            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "second.txt", cx)])
10279        });
10280        workspace.update_in(cx, |workspace, window, cx| {
10281            workspace.add_item_to_active_pane(Box::new(item_2), None, true, window, cx);
10282            assert_eq!(
10283                pane_items_paths(&workspace.panes[0], cx),
10284                vec!["first.txt".to_string(), "second.txt".to_string()],
10285            );
10286            workspace.move_item_to_pane_in_direction(
10287                &MoveItemToPaneInDirection {
10288                    direction: SplitDirection::Right,
10289                    focus: true,
10290                    clone: false,
10291                },
10292                window,
10293                cx,
10294            );
10295
10296            assert_eq!(workspace.panes.len(), 2, "A new pane should be created");
10297            assert_eq!(
10298                pane_items_paths(&workspace.panes[0], cx),
10299                vec!["first.txt".to_string()],
10300                "After moving, one item should be left in the original pane"
10301            );
10302            assert_eq!(
10303                pane_items_paths(&workspace.panes[1], cx),
10304                vec!["second.txt".to_string()],
10305                "New item should have been moved to the new pane"
10306            );
10307        });
10308
10309        let item_3 = cx.new(|cx| {
10310            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "third.txt", cx)])
10311        });
10312        workspace.update_in(cx, |workspace, window, cx| {
10313            let original_pane = workspace.panes[0].clone();
10314            workspace.set_active_pane(&original_pane, window, cx);
10315            workspace.add_item_to_active_pane(Box::new(item_3), None, true, window, cx);
10316            assert_eq!(workspace.panes.len(), 2, "No new panes were created");
10317            assert_eq!(
10318                pane_items_paths(&workspace.active_pane, cx),
10319                vec!["first.txt".to_string(), "third.txt".to_string()],
10320                "New pane should be ready to move one item out"
10321            );
10322
10323            workspace.move_item_to_pane_at_index(
10324                &MoveItemToPane {
10325                    destination: 3,
10326                    focus: true,
10327                    clone: false,
10328                },
10329                window,
10330                cx,
10331            );
10332            assert_eq!(workspace.panes.len(), 3, "A new pane should be created");
10333            assert_eq!(
10334                pane_items_paths(&workspace.active_pane, cx),
10335                vec!["first.txt".to_string()],
10336                "After moving, one item should be left in the original pane"
10337            );
10338            assert_eq!(
10339                pane_items_paths(&workspace.panes[1], cx),
10340                vec!["second.txt".to_string()],
10341                "Previously created pane should be unchanged"
10342            );
10343            assert_eq!(
10344                pane_items_paths(&workspace.panes[2], cx),
10345                vec!["third.txt".to_string()],
10346                "New item should have been moved to the new pane"
10347            );
10348        });
10349    }
10350
10351    #[gpui::test]
10352    async fn test_moving_items_can_clone_panes(cx: &mut TestAppContext) {
10353        init_test(cx);
10354
10355        let fs = FakeFs::new(cx.executor());
10356        let project = Project::test(fs, [], cx).await;
10357        let (workspace, cx) =
10358            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10359
10360        let item_1 = cx.new(|cx| {
10361            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10362        });
10363        workspace.update_in(cx, |workspace, window, cx| {
10364            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10365            workspace.move_item_to_pane_in_direction(
10366                &MoveItemToPaneInDirection {
10367                    direction: SplitDirection::Right,
10368                    focus: true,
10369                    clone: true,
10370                },
10371                window,
10372                cx,
10373            );
10374            workspace.move_item_to_pane_at_index(
10375                &MoveItemToPane {
10376                    destination: 3,
10377                    focus: true,
10378                    clone: true,
10379                },
10380                window,
10381                cx,
10382            );
10383
10384            assert_eq!(workspace.panes.len(), 3, "Two new panes were created");
10385            for pane in workspace.panes() {
10386                assert_eq!(
10387                    pane_items_paths(pane, cx),
10388                    vec!["first.txt".to_string()],
10389                    "Single item exists in all panes"
10390                );
10391            }
10392        });
10393
10394        // verify that the active pane has been updated after waiting for the
10395        // pane focus event to fire and resolve
10396        workspace.read_with(cx, |workspace, _app| {
10397            assert_eq!(
10398                workspace.active_pane(),
10399                &workspace.panes[2],
10400                "The third pane should be the active one: {:?}",
10401                workspace.panes
10402            );
10403        })
10404    }
10405
10406    mod register_project_item_tests {
10407
10408        use super::*;
10409
10410        // View
10411        struct TestPngItemView {
10412            focus_handle: FocusHandle,
10413        }
10414        // Model
10415        struct TestPngItem {}
10416
10417        impl project::ProjectItem for TestPngItem {
10418            fn try_open(
10419                _project: &Entity<Project>,
10420                path: &ProjectPath,
10421                cx: &mut App,
10422            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10423                if path.path.extension().unwrap() == "png" {
10424                    Some(cx.spawn(async move |cx| cx.new(|_| TestPngItem {})))
10425                } else {
10426                    None
10427                }
10428            }
10429
10430            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10431                None
10432            }
10433
10434            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10435                None
10436            }
10437
10438            fn is_dirty(&self) -> bool {
10439                false
10440            }
10441        }
10442
10443        impl Item for TestPngItemView {
10444            type Event = ();
10445            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10446                "".into()
10447            }
10448        }
10449        impl EventEmitter<()> for TestPngItemView {}
10450        impl Focusable for TestPngItemView {
10451            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10452                self.focus_handle.clone()
10453            }
10454        }
10455
10456        impl Render for TestPngItemView {
10457            fn render(
10458                &mut self,
10459                _window: &mut Window,
10460                _cx: &mut Context<Self>,
10461            ) -> impl IntoElement {
10462                Empty
10463            }
10464        }
10465
10466        impl ProjectItem for TestPngItemView {
10467            type Item = TestPngItem;
10468
10469            fn for_project_item(
10470                _project: Entity<Project>,
10471                _pane: Option<&Pane>,
10472                _item: Entity<Self::Item>,
10473                _: &mut Window,
10474                cx: &mut Context<Self>,
10475            ) -> Self
10476            where
10477                Self: Sized,
10478            {
10479                Self {
10480                    focus_handle: cx.focus_handle(),
10481                }
10482            }
10483        }
10484
10485        // View
10486        struct TestIpynbItemView {
10487            focus_handle: FocusHandle,
10488        }
10489        // Model
10490        struct TestIpynbItem {}
10491
10492        impl project::ProjectItem for TestIpynbItem {
10493            fn try_open(
10494                _project: &Entity<Project>,
10495                path: &ProjectPath,
10496                cx: &mut App,
10497            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10498                if path.path.extension().unwrap() == "ipynb" {
10499                    Some(cx.spawn(async move |cx| cx.new(|_| TestIpynbItem {})))
10500                } else {
10501                    None
10502                }
10503            }
10504
10505            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10506                None
10507            }
10508
10509            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10510                None
10511            }
10512
10513            fn is_dirty(&self) -> bool {
10514                false
10515            }
10516        }
10517
10518        impl Item for TestIpynbItemView {
10519            type Event = ();
10520            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10521                "".into()
10522            }
10523        }
10524        impl EventEmitter<()> for TestIpynbItemView {}
10525        impl Focusable for TestIpynbItemView {
10526            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10527                self.focus_handle.clone()
10528            }
10529        }
10530
10531        impl Render for TestIpynbItemView {
10532            fn render(
10533                &mut self,
10534                _window: &mut Window,
10535                _cx: &mut Context<Self>,
10536            ) -> impl IntoElement {
10537                Empty
10538            }
10539        }
10540
10541        impl ProjectItem for TestIpynbItemView {
10542            type Item = TestIpynbItem;
10543
10544            fn for_project_item(
10545                _project: Entity<Project>,
10546                _pane: Option<&Pane>,
10547                _item: Entity<Self::Item>,
10548                _: &mut Window,
10549                cx: &mut Context<Self>,
10550            ) -> Self
10551            where
10552                Self: Sized,
10553            {
10554                Self {
10555                    focus_handle: cx.focus_handle(),
10556                }
10557            }
10558        }
10559
10560        struct TestAlternatePngItemView {
10561            focus_handle: FocusHandle,
10562        }
10563
10564        impl Item for TestAlternatePngItemView {
10565            type Event = ();
10566            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10567                "".into()
10568            }
10569        }
10570
10571        impl EventEmitter<()> for TestAlternatePngItemView {}
10572        impl Focusable for TestAlternatePngItemView {
10573            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10574                self.focus_handle.clone()
10575            }
10576        }
10577
10578        impl Render for TestAlternatePngItemView {
10579            fn render(
10580                &mut self,
10581                _window: &mut Window,
10582                _cx: &mut Context<Self>,
10583            ) -> impl IntoElement {
10584                Empty
10585            }
10586        }
10587
10588        impl ProjectItem for TestAlternatePngItemView {
10589            type Item = TestPngItem;
10590
10591            fn for_project_item(
10592                _project: Entity<Project>,
10593                _pane: Option<&Pane>,
10594                _item: Entity<Self::Item>,
10595                _: &mut Window,
10596                cx: &mut Context<Self>,
10597            ) -> Self
10598            where
10599                Self: Sized,
10600            {
10601                Self {
10602                    focus_handle: cx.focus_handle(),
10603                }
10604            }
10605        }
10606
10607        #[gpui::test]
10608        async fn test_register_project_item(cx: &mut TestAppContext) {
10609            init_test(cx);
10610
10611            cx.update(|cx| {
10612                register_project_item::<TestPngItemView>(cx);
10613                register_project_item::<TestIpynbItemView>(cx);
10614            });
10615
10616            let fs = FakeFs::new(cx.executor());
10617            fs.insert_tree(
10618                "/root1",
10619                json!({
10620                    "one.png": "BINARYDATAHERE",
10621                    "two.ipynb": "{ totally a notebook }",
10622                    "three.txt": "editing text, sure why not?"
10623                }),
10624            )
10625            .await;
10626
10627            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10628            let (workspace, cx) =
10629                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10630
10631            let worktree_id = project.update(cx, |project, cx| {
10632                project.worktrees(cx).next().unwrap().read(cx).id()
10633            });
10634
10635            let handle = workspace
10636                .update_in(cx, |workspace, window, cx| {
10637                    let project_path = (worktree_id, "one.png");
10638                    workspace.open_path(project_path, None, true, window, cx)
10639                })
10640                .await
10641                .unwrap();
10642
10643            // Now we can check if the handle we got back errored or not
10644            assert_eq!(
10645                handle.to_any().entity_type(),
10646                TypeId::of::<TestPngItemView>()
10647            );
10648
10649            let handle = workspace
10650                .update_in(cx, |workspace, window, cx| {
10651                    let project_path = (worktree_id, "two.ipynb");
10652                    workspace.open_path(project_path, None, true, window, cx)
10653                })
10654                .await
10655                .unwrap();
10656
10657            assert_eq!(
10658                handle.to_any().entity_type(),
10659                TypeId::of::<TestIpynbItemView>()
10660            );
10661
10662            let handle = workspace
10663                .update_in(cx, |workspace, window, cx| {
10664                    let project_path = (worktree_id, "three.txt");
10665                    workspace.open_path(project_path, None, true, window, cx)
10666                })
10667                .await;
10668            assert!(handle.is_err());
10669        }
10670
10671        #[gpui::test]
10672        async fn test_register_project_item_two_enter_one_leaves(cx: &mut TestAppContext) {
10673            init_test(cx);
10674
10675            cx.update(|cx| {
10676                register_project_item::<TestPngItemView>(cx);
10677                register_project_item::<TestAlternatePngItemView>(cx);
10678            });
10679
10680            let fs = FakeFs::new(cx.executor());
10681            fs.insert_tree(
10682                "/root1",
10683                json!({
10684                    "one.png": "BINARYDATAHERE",
10685                    "two.ipynb": "{ totally a notebook }",
10686                    "three.txt": "editing text, sure why not?"
10687                }),
10688            )
10689            .await;
10690            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10691            let (workspace, cx) =
10692                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10693            let worktree_id = project.update(cx, |project, cx| {
10694                project.worktrees(cx).next().unwrap().read(cx).id()
10695            });
10696
10697            let handle = workspace
10698                .update_in(cx, |workspace, window, cx| {
10699                    let project_path = (worktree_id, "one.png");
10700                    workspace.open_path(project_path, None, true, window, cx)
10701                })
10702                .await
10703                .unwrap();
10704
10705            // This _must_ be the second item registered
10706            assert_eq!(
10707                handle.to_any().entity_type(),
10708                TypeId::of::<TestAlternatePngItemView>()
10709            );
10710
10711            let handle = workspace
10712                .update_in(cx, |workspace, window, cx| {
10713                    let project_path = (worktree_id, "three.txt");
10714                    workspace.open_path(project_path, None, true, window, cx)
10715                })
10716                .await;
10717            assert!(handle.is_err());
10718        }
10719    }
10720
10721    fn pane_items_paths(pane: &Entity<Pane>, cx: &App) -> Vec<String> {
10722        pane.read(cx)
10723            .items()
10724            .flat_map(|item| {
10725                item.project_paths(cx)
10726                    .into_iter()
10727                    .map(|path| path.path.to_string_lossy().to_string())
10728            })
10729            .collect()
10730    }
10731
10732    pub fn init_test(cx: &mut TestAppContext) {
10733        cx.update(|cx| {
10734            let settings_store = SettingsStore::test(cx);
10735            cx.set_global(settings_store);
10736            theme::init(theme::LoadThemes::JustBase, cx);
10737            language::init(cx);
10738            crate::init_settings(cx);
10739            Project::init_settings(cx);
10740        });
10741    }
10742
10743    fn dirty_project_item(id: u64, path: &str, cx: &mut App) -> Entity<TestProjectItem> {
10744        let item = TestProjectItem::new(id, path, cx);
10745        item.update(cx, |item, _| {
10746            item.is_dirty = true;
10747        });
10748        item
10749    }
10750}