workspace.rs

    1pub mod dock;
    2pub mod history_manager;
    3pub mod item;
    4mod modal_layer;
    5pub mod notifications;
    6pub mod pane;
    7pub mod pane_group;
    8mod persistence;
    9pub mod searchable;
   10pub mod shared_screen;
   11mod status_bar;
   12pub mod tasks;
   13mod theme_preview;
   14mod toast_layer;
   15mod toolbar;
   16mod workspace_settings;
   17
   18pub use toast_layer::{ToastAction, ToastLayer, ToastView};
   19
   20use anyhow::{Context as _, Result, anyhow};
   21use call::{ActiveCall, call_settings::CallSettings};
   22use client::{
   23    ChannelId, Client, ErrorExt, Status, TypedEnvelope, UserStore,
   24    proto::{self, ErrorCode, PanelId, PeerId},
   25};
   26use collections::{HashMap, HashSet, hash_map};
   27pub use dock::Panel;
   28use dock::{Dock, DockPosition, PanelButtons, PanelHandle, RESIZE_HANDLE_SIZE};
   29use futures::{
   30    Future, FutureExt, StreamExt,
   31    channel::{
   32        mpsc::{self, UnboundedReceiver, UnboundedSender},
   33        oneshot,
   34    },
   35    future::{Shared, try_join_all},
   36};
   37use gpui::{
   38    Action, AnyEntity, AnyView, AnyWeakView, App, AsyncApp, AsyncWindowContext, Bounds, Context,
   39    CursorStyle, Decorations, DragMoveEvent, Entity, EntityId, EventEmitter, FocusHandle,
   40    Focusable, Global, HitboxBehavior, Hsla, KeyContext, Keystroke, ManagedView, MouseButton,
   41    PathPromptOptions, Point, PromptLevel, Render, ResizeEdge, Size, Stateful, Subscription, Task,
   42    Tiling, WeakEntity, WindowBounds, WindowHandle, WindowId, WindowOptions, actions, canvas,
   43    point, relative, size, transparent_black,
   44};
   45pub use history_manager::*;
   46pub use item::{
   47    FollowableItem, FollowableItemHandle, Item, ItemHandle, ItemSettings, PreviewTabsSettings,
   48    ProjectItem, SerializableItem, SerializableItemHandle, WeakItemHandle,
   49};
   50use itertools::Itertools;
   51use language::{Buffer, LanguageRegistry, Rope};
   52pub use modal_layer::*;
   53use node_runtime::NodeRuntime;
   54use notifications::{
   55    DetachAndPromptErr, Notifications, dismiss_app_notification,
   56    simple_message_notification::MessageNotification,
   57};
   58pub use pane::*;
   59pub use pane_group::*;
   60use persistence::{
   61    DB, SerializedWindowBounds,
   62    model::{SerializedSshProject, SerializedWorkspace},
   63};
   64pub use persistence::{
   65    DB as WORKSPACE_DB, WorkspaceDb, delete_unloaded_items,
   66    model::{ItemId, LocalPaths, SerializedWorkspaceLocation},
   67};
   68use postage::stream::Stream;
   69use project::{
   70    DirectoryLister, Project, ProjectEntryId, ProjectPath, ResolvedPath, Worktree, WorktreeId,
   71    debugger::{breakpoint_store::BreakpointStoreEvent, session::ThreadStatus},
   72};
   73use remote::{SshClientDelegate, SshConnectionOptions, ssh_session::ConnectionIdentifier};
   74use schemars::JsonSchema;
   75use serde::Deserialize;
   76use session::AppSession;
   77use settings::Settings;
   78use shared_screen::SharedScreen;
   79use sqlez::{
   80    bindable::{Bind, Column, StaticColumnCount},
   81    statement::Statement,
   82};
   83use status_bar::StatusBar;
   84pub use status_bar::StatusItemView;
   85use std::{
   86    any::TypeId,
   87    borrow::Cow,
   88    cell::RefCell,
   89    cmp,
   90    collections::{VecDeque, hash_map::DefaultHasher},
   91    env,
   92    hash::{Hash, Hasher},
   93    path::{Path, PathBuf},
   94    process::ExitStatus,
   95    rc::Rc,
   96    sync::{Arc, LazyLock, Weak, atomic::AtomicUsize},
   97    time::Duration,
   98};
   99use task::{DebugScenario, SpawnInTerminal, TaskContext};
  100use theme::{ActiveTheme, SystemAppearance, ThemeSettings};
  101pub use toolbar::{Toolbar, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView};
  102pub use ui;
  103use ui::{Window, prelude::*};
  104use util::{ResultExt, TryFutureExt, paths::SanitizedPath, serde::default_true};
  105use uuid::Uuid;
  106pub use workspace_settings::{
  107    AutosaveSetting, BottomDockLayout, RestoreOnStartupBehavior, TabBarSettings, WorkspaceSettings,
  108};
  109use zed_actions::{Spawn, feedback::FileBugReport};
  110
  111use crate::notifications::NotificationId;
  112use crate::persistence::{
  113    SerializedAxis,
  114    model::{DockData, DockStructure, SerializedItem, SerializedPane, SerializedPaneGroup},
  115};
  116
  117pub const SERIALIZATION_THROTTLE_TIME: Duration = Duration::from_millis(200);
  118
  119static ZED_WINDOW_SIZE: LazyLock<Option<Size<Pixels>>> = LazyLock::new(|| {
  120    env::var("ZED_WINDOW_SIZE")
  121        .ok()
  122        .as_deref()
  123        .and_then(parse_pixel_size_env_var)
  124});
  125
  126static ZED_WINDOW_POSITION: LazyLock<Option<Point<Pixels>>> = LazyLock::new(|| {
  127    env::var("ZED_WINDOW_POSITION")
  128        .ok()
  129        .as_deref()
  130        .and_then(parse_pixel_position_env_var)
  131});
  132
  133pub trait TerminalProvider {
  134    fn spawn(
  135        &self,
  136        task: SpawnInTerminal,
  137        window: &mut Window,
  138        cx: &mut App,
  139    ) -> Task<Option<Result<ExitStatus>>>;
  140}
  141
  142pub trait DebuggerProvider {
  143    // `active_buffer` is used to resolve build task's name against language-specific tasks.
  144    fn start_session(
  145        &self,
  146        definition: DebugScenario,
  147        task_context: TaskContext,
  148        active_buffer: Option<Entity<Buffer>>,
  149        worktree_id: Option<WorktreeId>,
  150        window: &mut Window,
  151        cx: &mut App,
  152    );
  153
  154    fn spawn_task_or_modal(
  155        &self,
  156        workspace: &mut Workspace,
  157        action: &Spawn,
  158        window: &mut Window,
  159        cx: &mut Context<Workspace>,
  160    );
  161
  162    fn task_scheduled(&self, cx: &mut App);
  163    fn debug_scenario_scheduled(&self, cx: &mut App);
  164    fn debug_scenario_scheduled_last(&self, cx: &App) -> bool;
  165
  166    fn active_thread_state(&self, cx: &App) -> Option<ThreadStatus>;
  167}
  168
  169actions!(
  170    workspace,
  171    [
  172        /// Activates the next pane in the workspace.
  173        ActivateNextPane,
  174        /// Activates the previous pane in the workspace.
  175        ActivatePreviousPane,
  176        /// Switches to the next window.
  177        ActivateNextWindow,
  178        /// Switches to the previous window.
  179        ActivatePreviousWindow,
  180        /// Adds a folder to the current project.
  181        AddFolderToProject,
  182        /// Clears all notifications.
  183        ClearAllNotifications,
  184        /// Closes the active dock.
  185        CloseActiveDock,
  186        /// Closes all docks.
  187        CloseAllDocks,
  188        /// Closes the current window.
  189        CloseWindow,
  190        /// Opens the feedback dialog.
  191        Feedback,
  192        /// Follows the next collaborator in the session.
  193        FollowNextCollaborator,
  194        /// Moves the focused panel to the next position.
  195        MoveFocusedPanelToNextPosition,
  196        /// Opens a new terminal in the center.
  197        NewCenterTerminal,
  198        /// Creates a new file.
  199        NewFile,
  200        /// Creates a new file in a vertical split.
  201        NewFileSplitVertical,
  202        /// Creates a new file in a horizontal split.
  203        NewFileSplitHorizontal,
  204        /// Opens a new search.
  205        NewSearch,
  206        /// Opens a new terminal.
  207        NewTerminal,
  208        /// Opens a new window.
  209        NewWindow,
  210        /// Opens a file or directory.
  211        Open,
  212        /// Opens multiple files.
  213        OpenFiles,
  214        /// Opens the current location in terminal.
  215        OpenInTerminal,
  216        /// Opens the component preview.
  217        OpenComponentPreview,
  218        /// Reloads the active item.
  219        ReloadActiveItem,
  220        /// Resets the active dock to its default size.
  221        ResetActiveDockSize,
  222        /// Resets all open docks to their default sizes.
  223        ResetOpenDocksSize,
  224        /// Saves the current file with a new name.
  225        SaveAs,
  226        /// Saves without formatting.
  227        SaveWithoutFormat,
  228        /// Shuts down all debug adapters.
  229        ShutdownDebugAdapters,
  230        /// Suppresses the current notification.
  231        SuppressNotification,
  232        /// Toggles the bottom dock.
  233        ToggleBottomDock,
  234        /// Toggles centered layout mode.
  235        ToggleCenteredLayout,
  236        /// Toggles the left dock.
  237        ToggleLeftDock,
  238        /// Toggles the right dock.
  239        ToggleRightDock,
  240        /// Toggles zoom on the active pane.
  241        ToggleZoom,
  242        /// Stops following a collaborator.
  243        Unfollow,
  244        /// Shows the welcome screen.
  245        Welcome,
  246        /// Restores the banner.
  247        RestoreBanner,
  248        /// Toggles expansion of the selected item.
  249        ToggleExpandItem,
  250    ]
  251);
  252
  253#[derive(Clone, PartialEq)]
  254pub struct OpenPaths {
  255    pub paths: Vec<PathBuf>,
  256}
  257
  258/// Activates a specific pane by its index.
  259#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  260#[action(namespace = workspace)]
  261pub struct ActivatePane(pub usize);
  262
  263/// Moves an item to a specific pane by index.
  264#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  265#[action(namespace = workspace)]
  266#[serde(deny_unknown_fields)]
  267pub struct MoveItemToPane {
  268    #[serde(default = "default_1")]
  269    pub destination: usize,
  270    #[serde(default = "default_true")]
  271    pub focus: bool,
  272    #[serde(default)]
  273    pub clone: bool,
  274}
  275
  276fn default_1() -> usize {
  277    1
  278}
  279
  280/// Moves an item to a pane in the specified direction.
  281#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  282#[action(namespace = workspace)]
  283#[serde(deny_unknown_fields)]
  284pub struct MoveItemToPaneInDirection {
  285    #[serde(default = "default_right")]
  286    pub direction: SplitDirection,
  287    #[serde(default = "default_true")]
  288    pub focus: bool,
  289    #[serde(default)]
  290    pub clone: bool,
  291}
  292
  293fn default_right() -> SplitDirection {
  294    SplitDirection::Right
  295}
  296
  297/// Saves all open files in the workspace.
  298#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  299#[action(namespace = workspace)]
  300#[serde(deny_unknown_fields)]
  301pub struct SaveAll {
  302    #[serde(default)]
  303    pub save_intent: Option<SaveIntent>,
  304}
  305
  306/// Saves the current file with the specified options.
  307#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  308#[action(namespace = workspace)]
  309#[serde(deny_unknown_fields)]
  310pub struct Save {
  311    #[serde(default)]
  312    pub save_intent: Option<SaveIntent>,
  313}
  314
  315/// Closes all items and panes in the workspace.
  316#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  317#[action(namespace = workspace)]
  318#[serde(deny_unknown_fields)]
  319pub struct CloseAllItemsAndPanes {
  320    #[serde(default)]
  321    pub save_intent: Option<SaveIntent>,
  322}
  323
  324/// Closes all inactive tabs and panes in the workspace.
  325#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  326#[action(namespace = workspace)]
  327#[serde(deny_unknown_fields)]
  328pub struct CloseInactiveTabsAndPanes {
  329    #[serde(default)]
  330    pub save_intent: Option<SaveIntent>,
  331}
  332
  333/// Sends a sequence of keystrokes to the active element.
  334#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  335#[action(namespace = workspace)]
  336pub struct SendKeystrokes(pub String);
  337
  338/// Reloads the active item or workspace.
  339#[derive(Clone, Deserialize, PartialEq, Default, JsonSchema, Action)]
  340#[action(namespace = workspace)]
  341#[serde(deny_unknown_fields)]
  342pub struct Reload {
  343    pub binary_path: Option<PathBuf>,
  344}
  345
  346actions!(
  347    project_symbols,
  348    [
  349        /// Toggles the project symbols search.
  350        #[action(name = "Toggle")]
  351        ToggleProjectSymbols
  352    ]
  353);
  354
  355/// Toggles the file finder interface.
  356#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  357#[action(namespace = file_finder, name = "Toggle")]
  358#[serde(deny_unknown_fields)]
  359pub struct ToggleFileFinder {
  360    #[serde(default)]
  361    pub separate_history: bool,
  362}
  363
  364/// Increases size of a currently focused dock by a given amount of pixels.
  365#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  366#[action(namespace = workspace)]
  367#[serde(deny_unknown_fields)]
  368pub struct IncreaseActiveDockSize {
  369    /// For 0px parameter, uses UI font size value.
  370    #[serde(default)]
  371    pub px: u32,
  372}
  373
  374/// Decreases size of a currently focused dock by a given amount of pixels.
  375#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  376#[action(namespace = workspace)]
  377#[serde(deny_unknown_fields)]
  378pub struct DecreaseActiveDockSize {
  379    /// For 0px parameter, uses UI font size value.
  380    #[serde(default)]
  381    pub px: u32,
  382}
  383
  384/// Increases size of all currently visible docks uniformly, by a given amount of pixels.
  385#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  386#[action(namespace = workspace)]
  387#[serde(deny_unknown_fields)]
  388pub struct IncreaseOpenDocksSize {
  389    /// For 0px parameter, uses UI font size value.
  390    #[serde(default)]
  391    pub px: u32,
  392}
  393
  394/// Decreases size of all currently visible docks uniformly, by a given amount of pixels.
  395#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  396#[action(namespace = workspace)]
  397#[serde(deny_unknown_fields)]
  398pub struct DecreaseOpenDocksSize {
  399    /// For 0px parameter, uses UI font size value.
  400    #[serde(default)]
  401    pub px: u32,
  402}
  403
  404actions!(
  405    workspace,
  406    [
  407        /// Activates the pane to the left.
  408        ActivatePaneLeft,
  409        /// Activates the pane to the right.
  410        ActivatePaneRight,
  411        /// Activates the pane above.
  412        ActivatePaneUp,
  413        /// Activates the pane below.
  414        ActivatePaneDown,
  415        /// Swaps the current pane with the one to the left.
  416        SwapPaneLeft,
  417        /// Swaps the current pane with the one to the right.
  418        SwapPaneRight,
  419        /// Swaps the current pane with the one above.
  420        SwapPaneUp,
  421        /// Swaps the current pane with the one below.
  422        SwapPaneDown,
  423    ]
  424);
  425
  426#[derive(PartialEq, Eq, Debug)]
  427pub enum CloseIntent {
  428    /// Quit the program entirely.
  429    Quit,
  430    /// Close a window.
  431    CloseWindow,
  432    /// Replace the workspace in an existing window.
  433    ReplaceWindow,
  434}
  435
  436#[derive(Clone)]
  437pub struct Toast {
  438    id: NotificationId,
  439    msg: Cow<'static, str>,
  440    autohide: bool,
  441    on_click: Option<(Cow<'static, str>, Arc<dyn Fn(&mut Window, &mut App)>)>,
  442}
  443
  444impl Toast {
  445    pub fn new<I: Into<Cow<'static, str>>>(id: NotificationId, msg: I) -> Self {
  446        Toast {
  447            id,
  448            msg: msg.into(),
  449            on_click: None,
  450            autohide: false,
  451        }
  452    }
  453
  454    pub fn on_click<F, M>(mut self, message: M, on_click: F) -> Self
  455    where
  456        M: Into<Cow<'static, str>>,
  457        F: Fn(&mut Window, &mut App) + 'static,
  458    {
  459        self.on_click = Some((message.into(), Arc::new(on_click)));
  460        self
  461    }
  462
  463    pub fn autohide(mut self) -> Self {
  464        self.autohide = true;
  465        self
  466    }
  467}
  468
  469impl PartialEq for Toast {
  470    fn eq(&self, other: &Self) -> bool {
  471        self.id == other.id
  472            && self.msg == other.msg
  473            && self.on_click.is_some() == other.on_click.is_some()
  474    }
  475}
  476
  477/// Opens a new terminal with the specified working directory.
  478#[derive(Debug, Default, Clone, Deserialize, PartialEq, JsonSchema, Action)]
  479#[action(namespace = workspace)]
  480#[serde(deny_unknown_fields)]
  481pub struct OpenTerminal {
  482    pub working_directory: PathBuf,
  483}
  484
  485#[derive(Clone, Copy, Debug, Default, Hash, PartialEq, Eq, PartialOrd, Ord)]
  486pub struct WorkspaceId(i64);
  487
  488impl StaticColumnCount for WorkspaceId {}
  489impl Bind for WorkspaceId {
  490    fn bind(&self, statement: &Statement, start_index: i32) -> Result<i32> {
  491        self.0.bind(statement, start_index)
  492    }
  493}
  494impl Column for WorkspaceId {
  495    fn column(statement: &mut Statement, start_index: i32) -> Result<(Self, i32)> {
  496        i64::column(statement, start_index)
  497            .map(|(i, next_index)| (Self(i), next_index))
  498            .with_context(|| format!("Failed to read WorkspaceId at index {start_index}"))
  499    }
  500}
  501impl From<WorkspaceId> for i64 {
  502    fn from(val: WorkspaceId) -> Self {
  503        val.0
  504    }
  505}
  506
  507pub fn init_settings(cx: &mut App) {
  508    WorkspaceSettings::register(cx);
  509    ItemSettings::register(cx);
  510    PreviewTabsSettings::register(cx);
  511    TabBarSettings::register(cx);
  512}
  513
  514fn prompt_and_open_paths(app_state: Arc<AppState>, options: PathPromptOptions, cx: &mut App) {
  515    let paths = cx.prompt_for_paths(options);
  516    cx.spawn(
  517        async move |cx| match paths.await.anyhow().and_then(|res| res) {
  518            Ok(Some(paths)) => {
  519                cx.update(|cx| {
  520                    open_paths(&paths, app_state, OpenOptions::default(), cx).detach_and_log_err(cx)
  521                })
  522                .ok();
  523            }
  524            Ok(None) => {}
  525            Err(err) => {
  526                util::log_err(&err);
  527                cx.update(|cx| {
  528                    if let Some(workspace_window) = cx
  529                        .active_window()
  530                        .and_then(|window| window.downcast::<Workspace>())
  531                    {
  532                        workspace_window
  533                            .update(cx, |workspace, _, cx| {
  534                                workspace.show_portal_error(err.to_string(), cx);
  535                            })
  536                            .ok();
  537                    }
  538                })
  539                .ok();
  540            }
  541        },
  542    )
  543    .detach();
  544}
  545
  546pub fn init(app_state: Arc<AppState>, cx: &mut App) {
  547    init_settings(cx);
  548    component::init();
  549    theme_preview::init(cx);
  550    toast_layer::init(cx);
  551    history_manager::init(cx);
  552
  553    cx.on_action(Workspace::close_global);
  554    cx.on_action(reload);
  555
  556    cx.on_action({
  557        let app_state = Arc::downgrade(&app_state);
  558        move |_: &Open, cx: &mut App| {
  559            if let Some(app_state) = app_state.upgrade() {
  560                prompt_and_open_paths(
  561                    app_state,
  562                    PathPromptOptions {
  563                        files: true,
  564                        directories: true,
  565                        multiple: true,
  566                    },
  567                    cx,
  568                );
  569            }
  570        }
  571    });
  572    cx.on_action({
  573        let app_state = Arc::downgrade(&app_state);
  574        move |_: &OpenFiles, cx: &mut App| {
  575            let directories = cx.can_select_mixed_files_and_dirs();
  576            if let Some(app_state) = app_state.upgrade() {
  577                prompt_and_open_paths(
  578                    app_state,
  579                    PathPromptOptions {
  580                        files: true,
  581                        directories,
  582                        multiple: true,
  583                    },
  584                    cx,
  585                );
  586            }
  587        }
  588    });
  589}
  590
  591type BuildProjectItemFn =
  592    fn(AnyEntity, Entity<Project>, Option<&Pane>, &mut Window, &mut App) -> Box<dyn ItemHandle>;
  593
  594type BuildProjectItemForPathFn =
  595    fn(
  596        &Entity<Project>,
  597        &ProjectPath,
  598        &mut Window,
  599        &mut App,
  600    ) -> Option<Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>>>;
  601
  602#[derive(Clone, Default)]
  603struct ProjectItemRegistry {
  604    build_project_item_fns_by_type: HashMap<TypeId, BuildProjectItemFn>,
  605    build_project_item_for_path_fns: Vec<BuildProjectItemForPathFn>,
  606}
  607
  608impl ProjectItemRegistry {
  609    fn register<T: ProjectItem>(&mut self) {
  610        self.build_project_item_fns_by_type.insert(
  611            TypeId::of::<T::Item>(),
  612            |item, project, pane, window, cx| {
  613                let item = item.downcast().unwrap();
  614                Box::new(cx.new(|cx| T::for_project_item(project, pane, item, window, cx)))
  615                    as Box<dyn ItemHandle>
  616            },
  617        );
  618        self.build_project_item_for_path_fns
  619            .push(|project, project_path, window, cx| {
  620                let project_item =
  621                    <T::Item as project::ProjectItem>::try_open(project, project_path, cx)?;
  622                let project = project.clone();
  623                Some(window.spawn(cx, async move |cx| {
  624                    let project_item = project_item.await?;
  625                    let project_entry_id: Option<ProjectEntryId> =
  626                        project_item.read_with(cx, project::ProjectItem::entry_id)?;
  627                    let build_workspace_item = Box::new(
  628                        |pane: &mut Pane, window: &mut Window, cx: &mut Context<Pane>| {
  629                            Box::new(cx.new(|cx| {
  630                                T::for_project_item(project, Some(pane), project_item, window, cx)
  631                            })) as Box<dyn ItemHandle>
  632                        },
  633                    ) as Box<_>;
  634                    Ok((project_entry_id, build_workspace_item))
  635                }))
  636            });
  637    }
  638
  639    fn open_path(
  640        &self,
  641        project: &Entity<Project>,
  642        path: &ProjectPath,
  643        window: &mut Window,
  644        cx: &mut App,
  645    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
  646        let Some(open_project_item) = self
  647            .build_project_item_for_path_fns
  648            .iter()
  649            .rev()
  650            .find_map(|open_project_item| open_project_item(&project, &path, window, cx))
  651        else {
  652            return Task::ready(Err(anyhow!("cannot open file {:?}", path.path)));
  653        };
  654        open_project_item
  655    }
  656
  657    fn build_item<T: project::ProjectItem>(
  658        &self,
  659        item: Entity<T>,
  660        project: Entity<Project>,
  661        pane: Option<&Pane>,
  662        window: &mut Window,
  663        cx: &mut App,
  664    ) -> Option<Box<dyn ItemHandle>> {
  665        let build = self
  666            .build_project_item_fns_by_type
  667            .get(&TypeId::of::<T>())?;
  668        Some(build(item.into_any(), project, pane, window, cx))
  669    }
  670}
  671
  672type WorkspaceItemBuilder =
  673    Box<dyn FnOnce(&mut Pane, &mut Window, &mut Context<Pane>) -> Box<dyn ItemHandle>>;
  674
  675impl Global for ProjectItemRegistry {}
  676
  677/// Registers a [ProjectItem] for the app. When opening a file, all the registered
  678/// items will get a chance to open the file, starting from the project item that
  679/// was added last.
  680pub fn register_project_item<I: ProjectItem>(cx: &mut App) {
  681    cx.default_global::<ProjectItemRegistry>().register::<I>();
  682}
  683
  684#[derive(Default)]
  685pub struct FollowableViewRegistry(HashMap<TypeId, FollowableViewDescriptor>);
  686
  687struct FollowableViewDescriptor {
  688    from_state_proto: fn(
  689        Entity<Workspace>,
  690        ViewId,
  691        &mut Option<proto::view::Variant>,
  692        &mut Window,
  693        &mut App,
  694    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>>,
  695    to_followable_view: fn(&AnyView) -> Box<dyn FollowableItemHandle>,
  696}
  697
  698impl Global for FollowableViewRegistry {}
  699
  700impl FollowableViewRegistry {
  701    pub fn register<I: FollowableItem>(cx: &mut App) {
  702        cx.default_global::<Self>().0.insert(
  703            TypeId::of::<I>(),
  704            FollowableViewDescriptor {
  705                from_state_proto: |workspace, id, state, window, cx| {
  706                    I::from_state_proto(workspace, id, state, window, cx).map(|task| {
  707                        cx.foreground_executor()
  708                            .spawn(async move { Ok(Box::new(task.await?) as Box<_>) })
  709                    })
  710                },
  711                to_followable_view: |view| Box::new(view.clone().downcast::<I>().unwrap()),
  712            },
  713        );
  714    }
  715
  716    pub fn from_state_proto(
  717        workspace: Entity<Workspace>,
  718        view_id: ViewId,
  719        mut state: Option<proto::view::Variant>,
  720        window: &mut Window,
  721        cx: &mut App,
  722    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>> {
  723        cx.update_default_global(|this: &mut Self, cx| {
  724            this.0.values().find_map(|descriptor| {
  725                (descriptor.from_state_proto)(workspace.clone(), view_id, &mut state, window, cx)
  726            })
  727        })
  728    }
  729
  730    pub fn to_followable_view(
  731        view: impl Into<AnyView>,
  732        cx: &App,
  733    ) -> Option<Box<dyn FollowableItemHandle>> {
  734        let this = cx.try_global::<Self>()?;
  735        let view = view.into();
  736        let descriptor = this.0.get(&view.entity_type())?;
  737        Some((descriptor.to_followable_view)(&view))
  738    }
  739}
  740
  741#[derive(Copy, Clone)]
  742struct SerializableItemDescriptor {
  743    deserialize: fn(
  744        Entity<Project>,
  745        WeakEntity<Workspace>,
  746        WorkspaceId,
  747        ItemId,
  748        &mut Window,
  749        &mut Context<Pane>,
  750    ) -> Task<Result<Box<dyn ItemHandle>>>,
  751    cleanup: fn(WorkspaceId, Vec<ItemId>, &mut Window, &mut App) -> Task<Result<()>>,
  752    view_to_serializable_item: fn(AnyView) -> Box<dyn SerializableItemHandle>,
  753}
  754
  755#[derive(Default)]
  756struct SerializableItemRegistry {
  757    descriptors_by_kind: HashMap<Arc<str>, SerializableItemDescriptor>,
  758    descriptors_by_type: HashMap<TypeId, SerializableItemDescriptor>,
  759}
  760
  761impl Global for SerializableItemRegistry {}
  762
  763impl SerializableItemRegistry {
  764    fn deserialize(
  765        item_kind: &str,
  766        project: Entity<Project>,
  767        workspace: WeakEntity<Workspace>,
  768        workspace_id: WorkspaceId,
  769        item_item: ItemId,
  770        window: &mut Window,
  771        cx: &mut Context<Pane>,
  772    ) -> Task<Result<Box<dyn ItemHandle>>> {
  773        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  774            return Task::ready(Err(anyhow!(
  775                "cannot deserialize {}, descriptor not found",
  776                item_kind
  777            )));
  778        };
  779
  780        (descriptor.deserialize)(project, workspace, workspace_id, item_item, window, cx)
  781    }
  782
  783    fn cleanup(
  784        item_kind: &str,
  785        workspace_id: WorkspaceId,
  786        loaded_items: Vec<ItemId>,
  787        window: &mut Window,
  788        cx: &mut App,
  789    ) -> Task<Result<()>> {
  790        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  791            return Task::ready(Err(anyhow!(
  792                "cannot cleanup {}, descriptor not found",
  793                item_kind
  794            )));
  795        };
  796
  797        (descriptor.cleanup)(workspace_id, loaded_items, window, cx)
  798    }
  799
  800    fn view_to_serializable_item_handle(
  801        view: AnyView,
  802        cx: &App,
  803    ) -> Option<Box<dyn SerializableItemHandle>> {
  804        let this = cx.try_global::<Self>()?;
  805        let descriptor = this.descriptors_by_type.get(&view.entity_type())?;
  806        Some((descriptor.view_to_serializable_item)(view))
  807    }
  808
  809    fn descriptor(item_kind: &str, cx: &App) -> Option<SerializableItemDescriptor> {
  810        let this = cx.try_global::<Self>()?;
  811        this.descriptors_by_kind.get(item_kind).copied()
  812    }
  813}
  814
  815pub fn register_serializable_item<I: SerializableItem>(cx: &mut App) {
  816    let serialized_item_kind = I::serialized_item_kind();
  817
  818    let registry = cx.default_global::<SerializableItemRegistry>();
  819    let descriptor = SerializableItemDescriptor {
  820        deserialize: |project, workspace, workspace_id, item_id, window, cx| {
  821            let task = I::deserialize(project, workspace, workspace_id, item_id, window, cx);
  822            cx.foreground_executor()
  823                .spawn(async { Ok(Box::new(task.await?) as Box<_>) })
  824        },
  825        cleanup: |workspace_id, loaded_items, window, cx| {
  826            I::cleanup(workspace_id, loaded_items, window, cx)
  827        },
  828        view_to_serializable_item: |view| Box::new(view.downcast::<I>().unwrap()),
  829    };
  830    registry
  831        .descriptors_by_kind
  832        .insert(Arc::from(serialized_item_kind), descriptor);
  833    registry
  834        .descriptors_by_type
  835        .insert(TypeId::of::<I>(), descriptor);
  836}
  837
  838pub struct AppState {
  839    pub languages: Arc<LanguageRegistry>,
  840    pub client: Arc<Client>,
  841    pub user_store: Entity<UserStore>,
  842    pub workspace_store: Entity<WorkspaceStore>,
  843    pub fs: Arc<dyn fs::Fs>,
  844    pub build_window_options: fn(Option<Uuid>, &mut App) -> WindowOptions,
  845    pub node_runtime: NodeRuntime,
  846    pub session: Entity<AppSession>,
  847}
  848
  849struct GlobalAppState(Weak<AppState>);
  850
  851impl Global for GlobalAppState {}
  852
  853pub struct WorkspaceStore {
  854    workspaces: HashSet<WindowHandle<Workspace>>,
  855    client: Arc<Client>,
  856    _subscriptions: Vec<client::Subscription>,
  857}
  858
  859#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq, PartialOrd, Ord)]
  860pub enum CollaboratorId {
  861    PeerId(PeerId),
  862    Agent,
  863}
  864
  865impl From<PeerId> for CollaboratorId {
  866    fn from(peer_id: PeerId) -> Self {
  867        CollaboratorId::PeerId(peer_id)
  868    }
  869}
  870
  871impl From<&PeerId> for CollaboratorId {
  872    fn from(peer_id: &PeerId) -> Self {
  873        CollaboratorId::PeerId(*peer_id)
  874    }
  875}
  876
  877#[derive(PartialEq, Eq, PartialOrd, Ord, Debug)]
  878struct Follower {
  879    project_id: Option<u64>,
  880    peer_id: PeerId,
  881}
  882
  883impl AppState {
  884    #[track_caller]
  885    pub fn global(cx: &App) -> Weak<Self> {
  886        cx.global::<GlobalAppState>().0.clone()
  887    }
  888    pub fn try_global(cx: &App) -> Option<Weak<Self>> {
  889        cx.try_global::<GlobalAppState>()
  890            .map(|state| state.0.clone())
  891    }
  892    pub fn set_global(state: Weak<AppState>, cx: &mut App) {
  893        cx.set_global(GlobalAppState(state));
  894    }
  895
  896    #[cfg(any(test, feature = "test-support"))]
  897    pub fn test(cx: &mut App) -> Arc<Self> {
  898        use node_runtime::NodeRuntime;
  899        use session::Session;
  900        use settings::SettingsStore;
  901
  902        if !cx.has_global::<SettingsStore>() {
  903            let settings_store = SettingsStore::test(cx);
  904            cx.set_global(settings_store);
  905        }
  906
  907        let fs = fs::FakeFs::new(cx.background_executor().clone());
  908        let languages = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));
  909        let clock = Arc::new(clock::FakeSystemClock::new());
  910        let http_client = http_client::FakeHttpClient::with_404_response();
  911        let client = Client::new(clock, http_client.clone(), cx);
  912        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
  913        let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
  914        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
  915
  916        theme::init(theme::LoadThemes::JustBase, cx);
  917        client::init(&client, cx);
  918        crate::init_settings(cx);
  919
  920        Arc::new(Self {
  921            client,
  922            fs,
  923            languages,
  924            user_store,
  925            workspace_store,
  926            node_runtime: NodeRuntime::unavailable(),
  927            build_window_options: |_, _| Default::default(),
  928            session,
  929        })
  930    }
  931}
  932
  933struct DelayedDebouncedEditAction {
  934    task: Option<Task<()>>,
  935    cancel_channel: Option<oneshot::Sender<()>>,
  936}
  937
  938impl DelayedDebouncedEditAction {
  939    fn new() -> DelayedDebouncedEditAction {
  940        DelayedDebouncedEditAction {
  941            task: None,
  942            cancel_channel: None,
  943        }
  944    }
  945
  946    fn fire_new<F>(
  947        &mut self,
  948        delay: Duration,
  949        window: &mut Window,
  950        cx: &mut Context<Workspace>,
  951        func: F,
  952    ) where
  953        F: 'static
  954            + Send
  955            + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> Task<Result<()>>,
  956    {
  957        if let Some(channel) = self.cancel_channel.take() {
  958            _ = channel.send(());
  959        }
  960
  961        let (sender, mut receiver) = oneshot::channel::<()>();
  962        self.cancel_channel = Some(sender);
  963
  964        let previous_task = self.task.take();
  965        self.task = Some(cx.spawn_in(window, async move |workspace, cx| {
  966            let mut timer = cx.background_executor().timer(delay).fuse();
  967            if let Some(previous_task) = previous_task {
  968                previous_task.await;
  969            }
  970
  971            futures::select_biased! {
  972                _ = receiver => return,
  973                    _ = timer => {}
  974            }
  975
  976            if let Some(result) = workspace
  977                .update_in(cx, |workspace, window, cx| (func)(workspace, window, cx))
  978                .log_err()
  979            {
  980                result.await.log_err();
  981            }
  982        }));
  983    }
  984}
  985
  986pub enum Event {
  987    PaneAdded(Entity<Pane>),
  988    PaneRemoved,
  989    ItemAdded {
  990        item: Box<dyn ItemHandle>,
  991    },
  992    ItemRemoved,
  993    ActiveItemChanged,
  994    UserSavedItem {
  995        pane: WeakEntity<Pane>,
  996        item: Box<dyn WeakItemHandle>,
  997        save_intent: SaveIntent,
  998    },
  999    ContactRequestedJoin(u64),
 1000    WorkspaceCreated(WeakEntity<Workspace>),
 1001    OpenBundledFile {
 1002        text: Cow<'static, str>,
 1003        title: &'static str,
 1004        language: &'static str,
 1005    },
 1006    ZoomChanged,
 1007    ModalOpened,
 1008    ClearActivityIndicator,
 1009}
 1010
 1011#[derive(Debug)]
 1012pub enum OpenVisible {
 1013    All,
 1014    None,
 1015    OnlyFiles,
 1016    OnlyDirectories,
 1017}
 1018
 1019enum WorkspaceLocation {
 1020    // Valid local paths or SSH project to serialize
 1021    Location(SerializedWorkspaceLocation),
 1022    // No valid location found hence clear session id
 1023    DetachFromSession,
 1024    // No valid location found to serialize
 1025    None,
 1026}
 1027
 1028type PromptForNewPath = Box<
 1029    dyn Fn(
 1030        &mut Workspace,
 1031        DirectoryLister,
 1032        &mut Window,
 1033        &mut Context<Workspace>,
 1034    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1035>;
 1036
 1037type PromptForOpenPath = Box<
 1038    dyn Fn(
 1039        &mut Workspace,
 1040        DirectoryLister,
 1041        &mut Window,
 1042        &mut Context<Workspace>,
 1043    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1044>;
 1045
 1046#[derive(Default)]
 1047struct DispatchingKeystrokes {
 1048    dispatched: HashSet<Vec<Keystroke>>,
 1049    queue: VecDeque<Keystroke>,
 1050    task: Option<Shared<Task<()>>>,
 1051}
 1052
 1053/// Collects everything project-related for a certain window opened.
 1054/// In some way, is a counterpart of a window, as the [`WindowHandle`] could be downcast into `Workspace`.
 1055///
 1056/// A `Workspace` usually consists of 1 or more projects, a central pane group, 3 docks and a status bar.
 1057/// The `Workspace` owns everybody's state and serves as a default, "global context",
 1058/// that can be used to register a global action to be triggered from any place in the window.
 1059pub struct Workspace {
 1060    weak_self: WeakEntity<Self>,
 1061    workspace_actions: Vec<Box<dyn Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div>>,
 1062    zoomed: Option<AnyWeakView>,
 1063    previous_dock_drag_coordinates: Option<Point<Pixels>>,
 1064    zoomed_position: Option<DockPosition>,
 1065    center: PaneGroup,
 1066    left_dock: Entity<Dock>,
 1067    bottom_dock: Entity<Dock>,
 1068    bottom_dock_layout: BottomDockLayout,
 1069    right_dock: Entity<Dock>,
 1070    panes: Vec<Entity<Pane>>,
 1071    panes_by_item: HashMap<EntityId, WeakEntity<Pane>>,
 1072    active_pane: Entity<Pane>,
 1073    last_active_center_pane: Option<WeakEntity<Pane>>,
 1074    last_active_view_id: Option<proto::ViewId>,
 1075    status_bar: Entity<StatusBar>,
 1076    modal_layer: Entity<ModalLayer>,
 1077    toast_layer: Entity<ToastLayer>,
 1078    titlebar_item: Option<AnyView>,
 1079    notifications: Notifications,
 1080    suppressed_notifications: HashSet<NotificationId>,
 1081    project: Entity<Project>,
 1082    follower_states: HashMap<CollaboratorId, FollowerState>,
 1083    last_leaders_by_pane: HashMap<WeakEntity<Pane>, CollaboratorId>,
 1084    window_edited: bool,
 1085    dirty_items: HashMap<EntityId, Subscription>,
 1086    active_call: Option<(Entity<ActiveCall>, Vec<Subscription>)>,
 1087    leader_updates_tx: mpsc::UnboundedSender<(PeerId, proto::UpdateFollowers)>,
 1088    database_id: Option<WorkspaceId>,
 1089    app_state: Arc<AppState>,
 1090    dispatching_keystrokes: Rc<RefCell<DispatchingKeystrokes>>,
 1091    _subscriptions: Vec<Subscription>,
 1092    _apply_leader_updates: Task<Result<()>>,
 1093    _observe_current_user: Task<Result<()>>,
 1094    _schedule_serialize: Option<Task<()>>,
 1095    pane_history_timestamp: Arc<AtomicUsize>,
 1096    bounds: Bounds<Pixels>,
 1097    pub centered_layout: bool,
 1098    bounds_save_task_queued: Option<Task<()>>,
 1099    on_prompt_for_new_path: Option<PromptForNewPath>,
 1100    on_prompt_for_open_path: Option<PromptForOpenPath>,
 1101    terminal_provider: Option<Box<dyn TerminalProvider>>,
 1102    debugger_provider: Option<Arc<dyn DebuggerProvider>>,
 1103    serializable_items_tx: UnboundedSender<Box<dyn SerializableItemHandle>>,
 1104    serialized_ssh_project: Option<SerializedSshProject>,
 1105    _items_serializer: Task<Result<()>>,
 1106    session_id: Option<String>,
 1107}
 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.serialize_workspace(window, cx);
 1153                    // This event could be triggered by `AddFolderToProject` or `RemoveFromProject`.
 1154                    this.update_history(cx);
 1155                }
 1156
 1157                project::Event::DisconnectedFromHost => {
 1158                    this.update_window_edited(window, cx);
 1159                    let leaders_to_unfollow =
 1160                        this.follower_states.keys().copied().collect::<Vec<_>>();
 1161                    for leader_id in leaders_to_unfollow {
 1162                        this.unfollow(leader_id, window, cx);
 1163                    }
 1164                }
 1165
 1166                project::Event::DisconnectedFromSshRemote => {
 1167                    this.update_window_edited(window, cx);
 1168                }
 1169
 1170                project::Event::Closed => {
 1171                    window.remove_window();
 1172                }
 1173
 1174                project::Event::DeletedEntry(_, entry_id) => {
 1175                    for pane in this.panes.iter() {
 1176                        pane.update(cx, |pane, cx| {
 1177                            pane.handle_deleted_project_item(*entry_id, window, cx)
 1178                        });
 1179                    }
 1180                }
 1181
 1182                project::Event::Toast {
 1183                    notification_id,
 1184                    message,
 1185                } => this.show_notification(
 1186                    NotificationId::named(notification_id.clone()),
 1187                    cx,
 1188                    |cx| cx.new(|cx| MessageNotification::new(message.clone(), cx)),
 1189                ),
 1190
 1191                project::Event::HideToast { notification_id } => {
 1192                    this.dismiss_notification(&NotificationId::named(notification_id.clone()), cx)
 1193                }
 1194
 1195                project::Event::LanguageServerPrompt(request) => {
 1196                    struct LanguageServerPrompt;
 1197
 1198                    let mut hasher = DefaultHasher::new();
 1199                    request.lsp_name.as_str().hash(&mut hasher);
 1200                    let id = hasher.finish();
 1201
 1202                    this.show_notification(
 1203                        NotificationId::composite::<LanguageServerPrompt>(id as usize),
 1204                        cx,
 1205                        |cx| {
 1206                            cx.new(|cx| {
 1207                                notifications::LanguageServerPrompt::new(request.clone(), cx)
 1208                            })
 1209                        },
 1210                    );
 1211                }
 1212
 1213                project::Event::AgentLocationChanged => {
 1214                    this.handle_agent_location_changed(window, cx)
 1215                }
 1216
 1217                _ => {}
 1218            }
 1219            cx.notify()
 1220        })
 1221        .detach();
 1222
 1223        cx.subscribe_in(
 1224            &project.read(cx).breakpoint_store(),
 1225            window,
 1226            |workspace, _, event, window, cx| match event {
 1227                BreakpointStoreEvent::BreakpointsUpdated(_, _)
 1228                | BreakpointStoreEvent::BreakpointsCleared(_) => {
 1229                    workspace.serialize_workspace(window, cx);
 1230                }
 1231                BreakpointStoreEvent::SetDebugLine | BreakpointStoreEvent::ClearDebugLines => {}
 1232            },
 1233        )
 1234        .detach();
 1235
 1236        cx.on_focus_lost(window, |this, window, cx| {
 1237            let focus_handle = this.focus_handle(cx);
 1238            window.focus(&focus_handle);
 1239        })
 1240        .detach();
 1241
 1242        let weak_handle = cx.entity().downgrade();
 1243        let pane_history_timestamp = Arc::new(AtomicUsize::new(0));
 1244
 1245        let center_pane = cx.new(|cx| {
 1246            let mut center_pane = Pane::new(
 1247                weak_handle.clone(),
 1248                project.clone(),
 1249                pane_history_timestamp.clone(),
 1250                None,
 1251                NewFile.boxed_clone(),
 1252                window,
 1253                cx,
 1254            );
 1255            center_pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 1256            center_pane
 1257        });
 1258        cx.subscribe_in(&center_pane, window, Self::handle_pane_event)
 1259            .detach();
 1260
 1261        window.focus(&center_pane.focus_handle(cx));
 1262
 1263        cx.emit(Event::PaneAdded(center_pane.clone()));
 1264
 1265        let window_handle = window.window_handle().downcast::<Workspace>().unwrap();
 1266        app_state.workspace_store.update(cx, |store, _| {
 1267            store.workspaces.insert(window_handle);
 1268        });
 1269
 1270        let mut current_user = app_state.user_store.read(cx).watch_current_user();
 1271        let mut connection_status = app_state.client.status();
 1272        let _observe_current_user = cx.spawn_in(window, async move |this, cx| {
 1273            current_user.next().await;
 1274            connection_status.next().await;
 1275            let mut stream =
 1276                Stream::map(current_user, drop).merge(Stream::map(connection_status, drop));
 1277
 1278            while stream.recv().await.is_some() {
 1279                this.update(cx, |_, cx| cx.notify())?;
 1280            }
 1281            anyhow::Ok(())
 1282        });
 1283
 1284        // All leader updates are enqueued and then processed in a single task, so
 1285        // that each asynchronous operation can be run in order.
 1286        let (leader_updates_tx, mut leader_updates_rx) =
 1287            mpsc::unbounded::<(PeerId, proto::UpdateFollowers)>();
 1288        let _apply_leader_updates = cx.spawn_in(window, async move |this, cx| {
 1289            while let Some((leader_id, update)) = leader_updates_rx.next().await {
 1290                Self::process_leader_update(&this, leader_id, update, cx)
 1291                    .await
 1292                    .log_err();
 1293            }
 1294
 1295            Ok(())
 1296        });
 1297
 1298        cx.emit(Event::WorkspaceCreated(weak_handle.clone()));
 1299        let modal_layer = cx.new(|_| ModalLayer::new());
 1300        let toast_layer = cx.new(|_| ToastLayer::new());
 1301        cx.subscribe(
 1302            &modal_layer,
 1303            |_, _, _: &modal_layer::ModalOpenedEvent, cx| {
 1304                cx.emit(Event::ModalOpened);
 1305            },
 1306        )
 1307        .detach();
 1308
 1309        let bottom_dock_layout = WorkspaceSettings::get_global(cx).bottom_dock_layout;
 1310        let left_dock = Dock::new(DockPosition::Left, modal_layer.clone(), window, cx);
 1311        let bottom_dock = Dock::new(DockPosition::Bottom, modal_layer.clone(), window, cx);
 1312        let right_dock = Dock::new(DockPosition::Right, modal_layer.clone(), window, cx);
 1313        let left_dock_buttons = cx.new(|cx| PanelButtons::new(left_dock.clone(), cx));
 1314        let bottom_dock_buttons = cx.new(|cx| PanelButtons::new(bottom_dock.clone(), cx));
 1315        let right_dock_buttons = cx.new(|cx| PanelButtons::new(right_dock.clone(), cx));
 1316        let status_bar = cx.new(|cx| {
 1317            let mut status_bar = StatusBar::new(&center_pane.clone(), window, cx);
 1318            status_bar.add_left_item(left_dock_buttons, window, cx);
 1319            status_bar.add_right_item(right_dock_buttons, window, cx);
 1320            status_bar.add_right_item(bottom_dock_buttons, window, cx);
 1321            status_bar
 1322        });
 1323
 1324        let session_id = app_state.session.read(cx).id().to_owned();
 1325
 1326        let mut active_call = None;
 1327        if let Some(call) = ActiveCall::try_global(cx) {
 1328            let call = call.clone();
 1329            let subscriptions = vec![cx.subscribe_in(&call, window, Self::on_active_call_event)];
 1330            active_call = Some((call, subscriptions));
 1331        }
 1332
 1333        let (serializable_items_tx, serializable_items_rx) =
 1334            mpsc::unbounded::<Box<dyn SerializableItemHandle>>();
 1335        let _items_serializer = cx.spawn_in(window, async move |this, cx| {
 1336            Self::serialize_items(&this, serializable_items_rx, cx).await
 1337        });
 1338
 1339        let subscriptions = vec![
 1340            cx.observe_window_activation(window, Self::on_window_activation_changed),
 1341            cx.observe_window_bounds(window, move |this, window, cx| {
 1342                if this.bounds_save_task_queued.is_some() {
 1343                    return;
 1344                }
 1345                this.bounds_save_task_queued = Some(cx.spawn_in(window, async move |this, cx| {
 1346                    cx.background_executor()
 1347                        .timer(Duration::from_millis(100))
 1348                        .await;
 1349                    this.update_in(cx, |this, window, cx| {
 1350                        if let Some(display) = window.display(cx) {
 1351                            if let Ok(display_uuid) = display.uuid() {
 1352                                let window_bounds = window.inner_window_bounds();
 1353                                if let Some(database_id) = workspace_id {
 1354                                    cx.background_executor()
 1355                                        .spawn(DB.set_window_open_status(
 1356                                            database_id,
 1357                                            SerializedWindowBounds(window_bounds),
 1358                                            display_uuid,
 1359                                        ))
 1360                                        .detach_and_log_err(cx);
 1361                                }
 1362                            }
 1363                        }
 1364                        this.bounds_save_task_queued.take();
 1365                    })
 1366                    .ok();
 1367                }));
 1368                cx.notify();
 1369            }),
 1370            cx.observe_window_appearance(window, |_, window, cx| {
 1371                let window_appearance = window.appearance();
 1372
 1373                *SystemAppearance::global_mut(cx) = SystemAppearance(window_appearance.into());
 1374
 1375                ThemeSettings::reload_current_theme(cx);
 1376                ThemeSettings::reload_current_icon_theme(cx);
 1377            }),
 1378            cx.on_release(move |this, cx| {
 1379                this.app_state.workspace_store.update(cx, move |store, _| {
 1380                    store.workspaces.remove(&window_handle.clone());
 1381                })
 1382            }),
 1383        ];
 1384
 1385        cx.defer_in(window, |this, window, cx| {
 1386            this.update_window_title(window, cx);
 1387            this.show_initial_notifications(cx);
 1388        });
 1389        Workspace {
 1390            weak_self: weak_handle.clone(),
 1391            zoomed: None,
 1392            zoomed_position: None,
 1393            previous_dock_drag_coordinates: None,
 1394            center: PaneGroup::new(center_pane.clone()),
 1395            panes: vec![center_pane.clone()],
 1396            panes_by_item: Default::default(),
 1397            active_pane: center_pane.clone(),
 1398            last_active_center_pane: Some(center_pane.downgrade()),
 1399            last_active_view_id: None,
 1400            status_bar,
 1401            modal_layer,
 1402            toast_layer,
 1403            titlebar_item: None,
 1404            notifications: Notifications::default(),
 1405            suppressed_notifications: HashSet::default(),
 1406            left_dock,
 1407            bottom_dock,
 1408            bottom_dock_layout,
 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            dirty_items: Default::default(),
 1416            active_call,
 1417            database_id: workspace_id,
 1418            app_state,
 1419            _observe_current_user,
 1420            _apply_leader_updates,
 1421            _schedule_serialize: None,
 1422            leader_updates_tx,
 1423            _subscriptions: subscriptions,
 1424            pane_history_timestamp,
 1425            workspace_actions: Default::default(),
 1426            // This data will be incorrect, but it will be overwritten by the time it needs to be used.
 1427            bounds: Default::default(),
 1428            centered_layout: false,
 1429            bounds_save_task_queued: None,
 1430            on_prompt_for_new_path: None,
 1431            on_prompt_for_open_path: None,
 1432            terminal_provider: None,
 1433            debugger_provider: None,
 1434            serializable_items_tx,
 1435            _items_serializer,
 1436            session_id: Some(session_id),
 1437            serialized_ssh_project: None,
 1438        }
 1439    }
 1440
 1441    pub fn new_local(
 1442        abs_paths: Vec<PathBuf>,
 1443        app_state: Arc<AppState>,
 1444        requesting_window: Option<WindowHandle<Workspace>>,
 1445        env: Option<HashMap<String, String>>,
 1446        cx: &mut App,
 1447    ) -> Task<
 1448        anyhow::Result<(
 1449            WindowHandle<Workspace>,
 1450            Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 1451        )>,
 1452    > {
 1453        let project_handle = Project::local(
 1454            app_state.client.clone(),
 1455            app_state.node_runtime.clone(),
 1456            app_state.user_store.clone(),
 1457            app_state.languages.clone(),
 1458            app_state.fs.clone(),
 1459            env,
 1460            cx,
 1461        );
 1462
 1463        cx.spawn(async move |cx| {
 1464            let mut paths_to_open = Vec::with_capacity(abs_paths.len());
 1465            for path in abs_paths.into_iter() {
 1466                if let Some(canonical) = app_state.fs.canonicalize(&path).await.ok() {
 1467                    paths_to_open.push(canonical)
 1468                } else {
 1469                    paths_to_open.push(path)
 1470                }
 1471            }
 1472
 1473            let serialized_workspace =
 1474                persistence::DB.workspace_for_roots(paths_to_open.as_slice());
 1475
 1476            let workspace_location = serialized_workspace
 1477                .as_ref()
 1478                .map(|ws| &ws.location)
 1479                .and_then(|loc| match loc {
 1480                    SerializedWorkspaceLocation::Local(_, order) => {
 1481                        Some((loc.sorted_paths(), order.order()))
 1482                    }
 1483                    _ => None,
 1484                });
 1485
 1486            if let Some((paths, order)) = workspace_location {
 1487                paths_to_open = paths.iter().cloned().collect();
 1488
 1489                if order.iter().enumerate().any(|(i, &j)| i != j) {
 1490                    project_handle
 1491                        .update(cx, |project, cx| {
 1492                            project.set_worktrees_reordered(true, cx);
 1493                        })
 1494                        .log_err();
 1495                }
 1496            }
 1497
 1498            // Get project paths for all of the abs_paths
 1499            let mut project_paths: Vec<(PathBuf, Option<ProjectPath>)> =
 1500                Vec::with_capacity(paths_to_open.len());
 1501
 1502            for path in paths_to_open.into_iter() {
 1503                if let Some((_, project_entry)) = cx
 1504                    .update(|cx| {
 1505                        Workspace::project_path_for_path(project_handle.clone(), &path, true, cx)
 1506                    })?
 1507                    .await
 1508                    .log_err()
 1509                {
 1510                    project_paths.push((path, Some(project_entry)));
 1511                } else {
 1512                    project_paths.push((path, None));
 1513                }
 1514            }
 1515
 1516            let workspace_id = if let Some(serialized_workspace) = serialized_workspace.as_ref() {
 1517                serialized_workspace.id
 1518            } else {
 1519                DB.next_id().await.unwrap_or_else(|_| Default::default())
 1520            };
 1521
 1522            let toolchains = DB.toolchains(workspace_id).await?;
 1523
 1524            for (toolchain, worktree_id, path) in toolchains {
 1525                let toolchain_path = PathBuf::from(toolchain.path.clone().to_string());
 1526                if !app_state.fs.is_file(toolchain_path.as_path()).await {
 1527                    continue;
 1528                }
 1529
 1530                project_handle
 1531                    .update(cx, |this, cx| {
 1532                        this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 1533                    })?
 1534                    .await;
 1535            }
 1536            let window = if let Some(window) = requesting_window {
 1537                let centered_layout = serialized_workspace
 1538                    .as_ref()
 1539                    .map(|w| w.centered_layout)
 1540                    .unwrap_or(false);
 1541
 1542                cx.update_window(window.into(), |_, window, cx| {
 1543                    window.replace_root(cx, |window, cx| {
 1544                        let mut workspace = Workspace::new(
 1545                            Some(workspace_id),
 1546                            project_handle.clone(),
 1547                            app_state.clone(),
 1548                            window,
 1549                            cx,
 1550                        );
 1551
 1552                        workspace.centered_layout = centered_layout;
 1553                        workspace
 1554                    });
 1555                })?;
 1556                window
 1557            } else {
 1558                let window_bounds_override = window_bounds_env_override();
 1559
 1560                let (window_bounds, display) = if let Some(bounds) = window_bounds_override {
 1561                    (Some(WindowBounds::Windowed(bounds)), None)
 1562                } else {
 1563                    let restorable_bounds = serialized_workspace
 1564                        .as_ref()
 1565                        .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 1566                        .or_else(|| {
 1567                            let (display, window_bounds) = DB.last_window().log_err()?;
 1568                            Some((display?, window_bounds?))
 1569                        });
 1570
 1571                    if let Some((serialized_display, serialized_status)) = restorable_bounds {
 1572                        (Some(serialized_status.0), Some(serialized_display))
 1573                    } else {
 1574                        (None, None)
 1575                    }
 1576                };
 1577
 1578                // Use the serialized workspace to construct the new window
 1579                let mut options = cx.update(|cx| (app_state.build_window_options)(display, cx))?;
 1580                options.window_bounds = window_bounds;
 1581                let centered_layout = serialized_workspace
 1582                    .as_ref()
 1583                    .map(|w| w.centered_layout)
 1584                    .unwrap_or(false);
 1585                cx.open_window(options, {
 1586                    let app_state = app_state.clone();
 1587                    let project_handle = project_handle.clone();
 1588                    move |window, cx| {
 1589                        cx.new(|cx| {
 1590                            let mut workspace = Workspace::new(
 1591                                Some(workspace_id),
 1592                                project_handle,
 1593                                app_state,
 1594                                window,
 1595                                cx,
 1596                            );
 1597                            workspace.centered_layout = centered_layout;
 1598                            workspace
 1599                        })
 1600                    }
 1601                })?
 1602            };
 1603
 1604            notify_if_database_failed(window, cx);
 1605            let opened_items = window
 1606                .update(cx, |_workspace, window, cx| {
 1607                    open_items(serialized_workspace, project_paths, window, cx)
 1608                })?
 1609                .await
 1610                .unwrap_or_default();
 1611
 1612            window
 1613                .update(cx, |workspace, window, cx| {
 1614                    window.activate_window();
 1615                    workspace.update_history(cx);
 1616                })
 1617                .log_err();
 1618            Ok((window, opened_items))
 1619        })
 1620    }
 1621
 1622    pub fn weak_handle(&self) -> WeakEntity<Self> {
 1623        self.weak_self.clone()
 1624    }
 1625
 1626    pub fn left_dock(&self) -> &Entity<Dock> {
 1627        &self.left_dock
 1628    }
 1629
 1630    pub fn bottom_dock(&self) -> &Entity<Dock> {
 1631        &self.bottom_dock
 1632    }
 1633
 1634    pub fn bottom_dock_layout(&self) -> BottomDockLayout {
 1635        self.bottom_dock_layout
 1636    }
 1637
 1638    pub fn set_bottom_dock_layout(
 1639        &mut self,
 1640        layout: BottomDockLayout,
 1641        window: &mut Window,
 1642        cx: &mut Context<Self>,
 1643    ) {
 1644        let fs = self.project().read(cx).fs();
 1645        settings::update_settings_file::<WorkspaceSettings>(fs.clone(), cx, move |content, _cx| {
 1646            content.bottom_dock_layout = Some(layout);
 1647        });
 1648
 1649        self.bottom_dock_layout = layout;
 1650        cx.notify();
 1651        self.serialize_workspace(window, cx);
 1652    }
 1653
 1654    pub fn right_dock(&self) -> &Entity<Dock> {
 1655        &self.right_dock
 1656    }
 1657
 1658    pub fn all_docks(&self) -> [&Entity<Dock>; 3] {
 1659        [&self.left_dock, &self.bottom_dock, &self.right_dock]
 1660    }
 1661
 1662    pub fn dock_at_position(&self, position: DockPosition) -> &Entity<Dock> {
 1663        match position {
 1664            DockPosition::Left => &self.left_dock,
 1665            DockPosition::Bottom => &self.bottom_dock,
 1666            DockPosition::Right => &self.right_dock,
 1667        }
 1668    }
 1669
 1670    pub fn is_edited(&self) -> bool {
 1671        self.window_edited
 1672    }
 1673
 1674    pub fn add_panel<T: Panel>(
 1675        &mut self,
 1676        panel: Entity<T>,
 1677        window: &mut Window,
 1678        cx: &mut Context<Self>,
 1679    ) {
 1680        let focus_handle = panel.panel_focus_handle(cx);
 1681        cx.on_focus_in(&focus_handle, window, Self::handle_panel_focused)
 1682            .detach();
 1683
 1684        let dock_position = panel.position(window, cx);
 1685        let dock = self.dock_at_position(dock_position);
 1686
 1687        dock.update(cx, |dock, cx| {
 1688            dock.add_panel(panel, self.weak_self.clone(), window, cx)
 1689        });
 1690    }
 1691
 1692    pub fn status_bar(&self) -> &Entity<StatusBar> {
 1693        &self.status_bar
 1694    }
 1695
 1696    pub fn app_state(&self) -> &Arc<AppState> {
 1697        &self.app_state
 1698    }
 1699
 1700    pub fn user_store(&self) -> &Entity<UserStore> {
 1701        &self.app_state.user_store
 1702    }
 1703
 1704    pub fn project(&self) -> &Entity<Project> {
 1705        &self.project
 1706    }
 1707
 1708    pub fn recently_activated_items(&self, cx: &App) -> HashMap<EntityId, usize> {
 1709        let mut history: HashMap<EntityId, usize> = HashMap::default();
 1710
 1711        for pane_handle in &self.panes {
 1712            let pane = pane_handle.read(cx);
 1713
 1714            for entry in pane.activation_history() {
 1715                history.insert(
 1716                    entry.entity_id,
 1717                    history
 1718                        .get(&entry.entity_id)
 1719                        .cloned()
 1720                        .unwrap_or(0)
 1721                        .max(entry.timestamp),
 1722                );
 1723            }
 1724        }
 1725
 1726        history
 1727    }
 1728
 1729    pub fn recent_active_item_by_type<T: 'static>(&self, cx: &App) -> Option<Entity<T>> {
 1730        let mut recent_item: Option<Entity<T>> = None;
 1731        let mut recent_timestamp = 0;
 1732        for pane_handle in &self.panes {
 1733            let pane = pane_handle.read(cx);
 1734            let item_map: HashMap<EntityId, &Box<dyn ItemHandle>> =
 1735                pane.items().map(|item| (item.item_id(), item)).collect();
 1736            for entry in pane.activation_history() {
 1737                if entry.timestamp > recent_timestamp {
 1738                    if let Some(&item) = item_map.get(&entry.entity_id) {
 1739                        if let Some(typed_item) = item.act_as::<T>(cx) {
 1740                            recent_timestamp = entry.timestamp;
 1741                            recent_item = Some(typed_item);
 1742                        }
 1743                    }
 1744                }
 1745            }
 1746        }
 1747        recent_item
 1748    }
 1749
 1750    pub fn recent_navigation_history_iter(
 1751        &self,
 1752        cx: &App,
 1753    ) -> impl Iterator<Item = (ProjectPath, Option<PathBuf>)> {
 1754        let mut abs_paths_opened: HashMap<PathBuf, HashSet<ProjectPath>> = HashMap::default();
 1755        let mut history: HashMap<ProjectPath, (Option<PathBuf>, usize)> = HashMap::default();
 1756
 1757        for pane in &self.panes {
 1758            let pane = pane.read(cx);
 1759
 1760            pane.nav_history()
 1761                .for_each_entry(cx, |entry, (project_path, fs_path)| {
 1762                    if let Some(fs_path) = &fs_path {
 1763                        abs_paths_opened
 1764                            .entry(fs_path.clone())
 1765                            .or_default()
 1766                            .insert(project_path.clone());
 1767                    }
 1768                    let timestamp = entry.timestamp;
 1769                    match history.entry(project_path) {
 1770                        hash_map::Entry::Occupied(mut entry) => {
 1771                            let (_, old_timestamp) = entry.get();
 1772                            if &timestamp > old_timestamp {
 1773                                entry.insert((fs_path, timestamp));
 1774                            }
 1775                        }
 1776                        hash_map::Entry::Vacant(entry) => {
 1777                            entry.insert((fs_path, timestamp));
 1778                        }
 1779                    }
 1780                });
 1781
 1782            if let Some(item) = pane.active_item() {
 1783                if let Some(project_path) = item.project_path(cx) {
 1784                    let fs_path = self.project.read(cx).absolute_path(&project_path, cx);
 1785
 1786                    if let Some(fs_path) = &fs_path {
 1787                        abs_paths_opened
 1788                            .entry(fs_path.clone())
 1789                            .or_default()
 1790                            .insert(project_path.clone());
 1791                    }
 1792
 1793                    history.insert(project_path, (fs_path, std::usize::MAX));
 1794                }
 1795            }
 1796        }
 1797
 1798        history
 1799            .into_iter()
 1800            .sorted_by_key(|(_, (_, order))| *order)
 1801            .map(|(project_path, (fs_path, _))| (project_path, fs_path))
 1802            .rev()
 1803            .filter(move |(history_path, abs_path)| {
 1804                let latest_project_path_opened = abs_path
 1805                    .as_ref()
 1806                    .and_then(|abs_path| abs_paths_opened.get(abs_path))
 1807                    .and_then(|project_paths| {
 1808                        project_paths
 1809                            .iter()
 1810                            .max_by(|b1, b2| b1.worktree_id.cmp(&b2.worktree_id))
 1811                    });
 1812
 1813                match latest_project_path_opened {
 1814                    Some(latest_project_path_opened) => latest_project_path_opened == history_path,
 1815                    None => true,
 1816                }
 1817            })
 1818    }
 1819
 1820    pub fn recent_navigation_history(
 1821        &self,
 1822        limit: Option<usize>,
 1823        cx: &App,
 1824    ) -> Vec<(ProjectPath, Option<PathBuf>)> {
 1825        self.recent_navigation_history_iter(cx)
 1826            .take(limit.unwrap_or(usize::MAX))
 1827            .collect()
 1828    }
 1829
 1830    fn navigate_history(
 1831        &mut self,
 1832        pane: WeakEntity<Pane>,
 1833        mode: NavigationMode,
 1834        window: &mut Window,
 1835        cx: &mut Context<Workspace>,
 1836    ) -> Task<Result<()>> {
 1837        let to_load = if let Some(pane) = pane.upgrade() {
 1838            pane.update(cx, |pane, cx| {
 1839                window.focus(&pane.focus_handle(cx));
 1840                loop {
 1841                    // Retrieve the weak item handle from the history.
 1842                    let entry = pane.nav_history_mut().pop(mode, cx)?;
 1843
 1844                    // If the item is still present in this pane, then activate it.
 1845                    if let Some(index) = entry
 1846                        .item
 1847                        .upgrade()
 1848                        .and_then(|v| pane.index_for_item(v.as_ref()))
 1849                    {
 1850                        let prev_active_item_index = pane.active_item_index();
 1851                        pane.nav_history_mut().set_mode(mode);
 1852                        pane.activate_item(index, true, true, window, cx);
 1853                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1854
 1855                        let mut navigated = prev_active_item_index != pane.active_item_index();
 1856                        if let Some(data) = entry.data {
 1857                            navigated |= pane.active_item()?.navigate(data, window, cx);
 1858                        }
 1859
 1860                        if navigated {
 1861                            break None;
 1862                        }
 1863                    } else {
 1864                        // If the item is no longer present in this pane, then retrieve its
 1865                        // path info in order to reopen it.
 1866                        break pane
 1867                            .nav_history()
 1868                            .path_for_item(entry.item.id())
 1869                            .map(|(project_path, abs_path)| (project_path, abs_path, entry));
 1870                    }
 1871                }
 1872            })
 1873        } else {
 1874            None
 1875        };
 1876
 1877        if let Some((project_path, abs_path, entry)) = to_load {
 1878            // If the item was no longer present, then load it again from its previous path, first try the local path
 1879            let open_by_project_path = self.load_path(project_path.clone(), window, cx);
 1880
 1881            cx.spawn_in(window, async move  |workspace, cx| {
 1882                let open_by_project_path = open_by_project_path.await;
 1883                let mut navigated = false;
 1884                match open_by_project_path
 1885                    .with_context(|| format!("Navigating to {project_path:?}"))
 1886                {
 1887                    Ok((project_entry_id, build_item)) => {
 1888                        let prev_active_item_id = pane.update(cx, |pane, _| {
 1889                            pane.nav_history_mut().set_mode(mode);
 1890                            pane.active_item().map(|p| p.item_id())
 1891                        })?;
 1892
 1893                        pane.update_in(cx, |pane, window, cx| {
 1894                            let item = pane.open_item(
 1895                                project_entry_id,
 1896                                project_path,
 1897                                true,
 1898                                entry.is_preview,
 1899                                true,
 1900                                None,
 1901                                window, cx,
 1902                                build_item,
 1903                            );
 1904                            navigated |= Some(item.item_id()) != prev_active_item_id;
 1905                            pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1906                            if let Some(data) = entry.data {
 1907                                navigated |= item.navigate(data, window, cx);
 1908                            }
 1909                        })?;
 1910                    }
 1911                    Err(open_by_project_path_e) => {
 1912                        // Fall back to opening by abs path, in case an external file was opened and closed,
 1913                        // and its worktree is now dropped
 1914                        if let Some(abs_path) = abs_path {
 1915                            let prev_active_item_id = pane.update(cx, |pane, _| {
 1916                                pane.nav_history_mut().set_mode(mode);
 1917                                pane.active_item().map(|p| p.item_id())
 1918                            })?;
 1919                            let open_by_abs_path = workspace.update_in(cx, |workspace, window, cx| {
 1920                                workspace.open_abs_path(abs_path.clone(), OpenOptions { visible: Some(OpenVisible::None), ..Default::default() }, window, cx)
 1921                            })?;
 1922                            match open_by_abs_path
 1923                                .await
 1924                                .with_context(|| format!("Navigating to {abs_path:?}"))
 1925                            {
 1926                                Ok(item) => {
 1927                                    pane.update_in(cx, |pane, window, cx| {
 1928                                        navigated |= Some(item.item_id()) != prev_active_item_id;
 1929                                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1930                                        if let Some(data) = entry.data {
 1931                                            navigated |= item.navigate(data, window, cx);
 1932                                        }
 1933                                    })?;
 1934                                }
 1935                                Err(open_by_abs_path_e) => {
 1936                                    log::error!("Failed to navigate history: {open_by_project_path_e:#} and {open_by_abs_path_e:#}");
 1937                                }
 1938                            }
 1939                        }
 1940                    }
 1941                }
 1942
 1943                if !navigated {
 1944                    workspace
 1945                        .update_in(cx, |workspace, window, cx| {
 1946                            Self::navigate_history(workspace, pane, mode, window, cx)
 1947                        })?
 1948                        .await?;
 1949                }
 1950
 1951                Ok(())
 1952            })
 1953        } else {
 1954            Task::ready(Ok(()))
 1955        }
 1956    }
 1957
 1958    pub fn go_back(
 1959        &mut self,
 1960        pane: WeakEntity<Pane>,
 1961        window: &mut Window,
 1962        cx: &mut Context<Workspace>,
 1963    ) -> Task<Result<()>> {
 1964        self.navigate_history(pane, NavigationMode::GoingBack, window, cx)
 1965    }
 1966
 1967    pub fn go_forward(
 1968        &mut self,
 1969        pane: WeakEntity<Pane>,
 1970        window: &mut Window,
 1971        cx: &mut Context<Workspace>,
 1972    ) -> Task<Result<()>> {
 1973        self.navigate_history(pane, NavigationMode::GoingForward, window, cx)
 1974    }
 1975
 1976    pub fn reopen_closed_item(
 1977        &mut self,
 1978        window: &mut Window,
 1979        cx: &mut Context<Workspace>,
 1980    ) -> Task<Result<()>> {
 1981        self.navigate_history(
 1982            self.active_pane().downgrade(),
 1983            NavigationMode::ReopeningClosedItem,
 1984            window,
 1985            cx,
 1986        )
 1987    }
 1988
 1989    pub fn client(&self) -> &Arc<Client> {
 1990        &self.app_state.client
 1991    }
 1992
 1993    pub fn set_titlebar_item(&mut self, item: AnyView, _: &mut Window, cx: &mut Context<Self>) {
 1994        self.titlebar_item = Some(item);
 1995        cx.notify();
 1996    }
 1997
 1998    pub fn set_prompt_for_new_path(&mut self, prompt: PromptForNewPath) {
 1999        self.on_prompt_for_new_path = Some(prompt)
 2000    }
 2001
 2002    pub fn set_prompt_for_open_path(&mut self, prompt: PromptForOpenPath) {
 2003        self.on_prompt_for_open_path = Some(prompt)
 2004    }
 2005
 2006    pub fn set_terminal_provider(&mut self, provider: impl TerminalProvider + 'static) {
 2007        self.terminal_provider = Some(Box::new(provider));
 2008    }
 2009
 2010    pub fn set_debugger_provider(&mut self, provider: impl DebuggerProvider + 'static) {
 2011        self.debugger_provider = Some(Arc::new(provider));
 2012    }
 2013
 2014    pub fn debugger_provider(&self) -> Option<Arc<dyn DebuggerProvider>> {
 2015        self.debugger_provider.clone()
 2016    }
 2017
 2018    pub fn serialized_ssh_project(&self) -> Option<SerializedSshProject> {
 2019        self.serialized_ssh_project.clone()
 2020    }
 2021
 2022    pub fn set_serialized_ssh_project(&mut self, serialized_ssh_project: SerializedSshProject) {
 2023        self.serialized_ssh_project = Some(serialized_ssh_project);
 2024    }
 2025
 2026    pub fn prompt_for_open_path(
 2027        &mut self,
 2028        path_prompt_options: PathPromptOptions,
 2029        lister: DirectoryLister,
 2030        window: &mut Window,
 2031        cx: &mut Context<Self>,
 2032    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2033        if !lister.is_local(cx) || !WorkspaceSettings::get_global(cx).use_system_path_prompts {
 2034            let prompt = self.on_prompt_for_open_path.take().unwrap();
 2035            let rx = prompt(self, lister, window, cx);
 2036            self.on_prompt_for_open_path = Some(prompt);
 2037            rx
 2038        } else {
 2039            let (tx, rx) = oneshot::channel();
 2040            let abs_path = cx.prompt_for_paths(path_prompt_options);
 2041
 2042            cx.spawn_in(window, async move |workspace, cx| {
 2043                let Ok(result) = abs_path.await else {
 2044                    return Ok(());
 2045                };
 2046
 2047                match result {
 2048                    Ok(result) => {
 2049                        tx.send(result).ok();
 2050                    }
 2051                    Err(err) => {
 2052                        let rx = workspace.update_in(cx, |workspace, window, cx| {
 2053                            workspace.show_portal_error(err.to_string(), cx);
 2054                            let prompt = workspace.on_prompt_for_open_path.take().unwrap();
 2055                            let rx = prompt(workspace, lister, window, cx);
 2056                            workspace.on_prompt_for_open_path = Some(prompt);
 2057                            rx
 2058                        })?;
 2059                        if let Ok(path) = rx.await {
 2060                            tx.send(path).ok();
 2061                        }
 2062                    }
 2063                };
 2064                anyhow::Ok(())
 2065            })
 2066            .detach();
 2067
 2068            rx
 2069        }
 2070    }
 2071
 2072    pub fn prompt_for_new_path(
 2073        &mut self,
 2074        lister: DirectoryLister,
 2075        window: &mut Window,
 2076        cx: &mut Context<Self>,
 2077    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2078        if self.project.read(cx).is_via_collab()
 2079            || self.project.read(cx).is_via_ssh()
 2080            || !WorkspaceSettings::get_global(cx).use_system_path_prompts
 2081        {
 2082            let prompt = self.on_prompt_for_new_path.take().unwrap();
 2083            let rx = prompt(self, lister, window, cx);
 2084            self.on_prompt_for_new_path = Some(prompt);
 2085            return rx;
 2086        }
 2087
 2088        let (tx, rx) = oneshot::channel();
 2089        cx.spawn_in(window, async move |workspace, cx| {
 2090            let abs_path = workspace.update(cx, |workspace, cx| {
 2091                let relative_to = workspace
 2092                    .most_recent_active_path(cx)
 2093                    .and_then(|p| p.parent().map(|p| p.to_path_buf()))
 2094                    .or_else(|| {
 2095                        let project = workspace.project.read(cx);
 2096                        project.visible_worktrees(cx).find_map(|worktree| {
 2097                            Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
 2098                        })
 2099                    })
 2100                    .or_else(std::env::home_dir)
 2101                    .unwrap_or_else(|| PathBuf::from(""));
 2102                cx.prompt_for_new_path(&relative_to)
 2103            })?;
 2104            let abs_path = match abs_path.await? {
 2105                Ok(path) => path,
 2106                Err(err) => {
 2107                    let rx = workspace.update_in(cx, |workspace, window, cx| {
 2108                        workspace.show_portal_error(err.to_string(), cx);
 2109
 2110                        let prompt = workspace.on_prompt_for_new_path.take().unwrap();
 2111                        let rx = prompt(workspace, lister, window, cx);
 2112                        workspace.on_prompt_for_new_path = Some(prompt);
 2113                        rx
 2114                    })?;
 2115                    if let Ok(path) = rx.await {
 2116                        tx.send(path).ok();
 2117                    }
 2118                    return anyhow::Ok(());
 2119                }
 2120            };
 2121
 2122            tx.send(abs_path.map(|path| vec![path])).ok();
 2123            anyhow::Ok(())
 2124        })
 2125        .detach();
 2126
 2127        rx
 2128    }
 2129
 2130    pub fn titlebar_item(&self) -> Option<AnyView> {
 2131        self.titlebar_item.clone()
 2132    }
 2133
 2134    /// Call the given callback with a workspace whose project is local.
 2135    ///
 2136    /// If the given workspace has a local project, then it will be passed
 2137    /// to the callback. Otherwise, a new empty window will be created.
 2138    pub fn with_local_workspace<T, F>(
 2139        &mut self,
 2140        window: &mut Window,
 2141        cx: &mut Context<Self>,
 2142        callback: F,
 2143    ) -> Task<Result<T>>
 2144    where
 2145        T: 'static,
 2146        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
 2147    {
 2148        if self.project.read(cx).is_local() {
 2149            Task::ready(Ok(callback(self, window, cx)))
 2150        } else {
 2151            let env = self.project.read(cx).cli_environment(cx);
 2152            let task = Self::new_local(Vec::new(), self.app_state.clone(), None, env, cx);
 2153            cx.spawn_in(window, async move |_vh, cx| {
 2154                let (workspace, _) = task.await?;
 2155                workspace.update(cx, callback)
 2156            })
 2157        }
 2158    }
 2159
 2160    pub fn worktrees<'a>(&self, cx: &'a App) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2161        self.project.read(cx).worktrees(cx)
 2162    }
 2163
 2164    pub fn visible_worktrees<'a>(
 2165        &self,
 2166        cx: &'a App,
 2167    ) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2168        self.project.read(cx).visible_worktrees(cx)
 2169    }
 2170
 2171    #[cfg(any(test, feature = "test-support"))]
 2172    pub fn worktree_scans_complete(&self, cx: &App) -> impl Future<Output = ()> + 'static + use<> {
 2173        let futures = self
 2174            .worktrees(cx)
 2175            .filter_map(|worktree| worktree.read(cx).as_local())
 2176            .map(|worktree| worktree.scan_complete())
 2177            .collect::<Vec<_>>();
 2178        async move {
 2179            for future in futures {
 2180                future.await;
 2181            }
 2182        }
 2183    }
 2184
 2185    pub fn close_global(_: &CloseWindow, cx: &mut App) {
 2186        cx.defer(|cx| {
 2187            cx.windows().iter().find(|window| {
 2188                window
 2189                    .update(cx, |_, window, _| {
 2190                        if window.is_window_active() {
 2191                            //This can only get called when the window's project connection has been lost
 2192                            //so we don't need to prompt the user for anything and instead just close the window
 2193                            window.remove_window();
 2194                            true
 2195                        } else {
 2196                            false
 2197                        }
 2198                    })
 2199                    .unwrap_or(false)
 2200            });
 2201        });
 2202    }
 2203
 2204    pub fn close_window(&mut self, _: &CloseWindow, window: &mut Window, cx: &mut Context<Self>) {
 2205        let prepare = self.prepare_to_close(CloseIntent::CloseWindow, window, cx);
 2206        cx.spawn_in(window, async move |_, cx| {
 2207            if prepare.await? {
 2208                cx.update(|window, _cx| window.remove_window())?;
 2209            }
 2210            anyhow::Ok(())
 2211        })
 2212        .detach_and_log_err(cx)
 2213    }
 2214
 2215    pub fn move_focused_panel_to_next_position(
 2216        &mut self,
 2217        _: &MoveFocusedPanelToNextPosition,
 2218        window: &mut Window,
 2219        cx: &mut Context<Self>,
 2220    ) {
 2221        let docks = self.all_docks();
 2222        let active_dock = docks
 2223            .into_iter()
 2224            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 2225
 2226        if let Some(dock) = active_dock {
 2227            dock.update(cx, |dock, cx| {
 2228                let active_panel = dock
 2229                    .active_panel()
 2230                    .filter(|panel| panel.panel_focus_handle(cx).contains_focused(window, cx));
 2231
 2232                if let Some(panel) = active_panel {
 2233                    panel.move_to_next_position(window, cx);
 2234                }
 2235            })
 2236        }
 2237    }
 2238
 2239    pub fn prepare_to_close(
 2240        &mut self,
 2241        close_intent: CloseIntent,
 2242        window: &mut Window,
 2243        cx: &mut Context<Self>,
 2244    ) -> Task<Result<bool>> {
 2245        let active_call = self.active_call().cloned();
 2246
 2247        // On Linux and Windows, closing the last window should restore the last workspace.
 2248        let save_last_workspace = cfg!(not(target_os = "macos"))
 2249            && close_intent != CloseIntent::ReplaceWindow
 2250            && cx.windows().len() == 1;
 2251
 2252        cx.spawn_in(window, async move |this, cx| {
 2253            let workspace_count = cx.update(|_window, cx| {
 2254                cx.windows()
 2255                    .iter()
 2256                    .filter(|window| window.downcast::<Workspace>().is_some())
 2257                    .count()
 2258            })?;
 2259
 2260            if let Some(active_call) = active_call {
 2261                if close_intent != CloseIntent::Quit
 2262                    && workspace_count == 1
 2263                    && active_call.read_with(cx, |call, _| call.room().is_some())?
 2264                {
 2265                    let answer = cx.update(|window, cx| {
 2266                        window.prompt(
 2267                            PromptLevel::Warning,
 2268                            "Do you want to leave the current call?",
 2269                            None,
 2270                            &["Close window and hang up", "Cancel"],
 2271                            cx,
 2272                        )
 2273                    })?;
 2274
 2275                    if answer.await.log_err() == Some(1) {
 2276                        return anyhow::Ok(false);
 2277                    } else {
 2278                        active_call
 2279                            .update(cx, |call, cx| call.hang_up(cx))?
 2280                            .await
 2281                            .log_err();
 2282                    }
 2283                }
 2284            }
 2285
 2286            let save_result = this
 2287                .update_in(cx, |this, window, cx| {
 2288                    this.save_all_internal(SaveIntent::Close, window, cx)
 2289                })?
 2290                .await;
 2291
 2292            // If we're not quitting, but closing, we remove the workspace from
 2293            // the current session.
 2294            if close_intent != CloseIntent::Quit
 2295                && !save_last_workspace
 2296                && save_result.as_ref().map_or(false, |&res| res)
 2297            {
 2298                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))?
 2299                    .await;
 2300            }
 2301
 2302            save_result
 2303        })
 2304    }
 2305
 2306    fn save_all(&mut self, action: &SaveAll, window: &mut Window, cx: &mut Context<Self>) {
 2307        self.save_all_internal(
 2308            action.save_intent.unwrap_or(SaveIntent::SaveAll),
 2309            window,
 2310            cx,
 2311        )
 2312        .detach_and_log_err(cx);
 2313    }
 2314
 2315    fn send_keystrokes(
 2316        &mut self,
 2317        action: &SendKeystrokes,
 2318        window: &mut Window,
 2319        cx: &mut Context<Self>,
 2320    ) {
 2321        let keystrokes: Vec<Keystroke> = action
 2322            .0
 2323            .split(' ')
 2324            .flat_map(|k| Keystroke::parse(k).log_err())
 2325            .collect();
 2326        let _ = self.send_keystrokes_impl(keystrokes, window, cx);
 2327    }
 2328
 2329    pub fn send_keystrokes_impl(
 2330        &mut self,
 2331        keystrokes: Vec<Keystroke>,
 2332        window: &mut Window,
 2333        cx: &mut Context<Self>,
 2334    ) -> Shared<Task<()>> {
 2335        let mut state = self.dispatching_keystrokes.borrow_mut();
 2336        if !state.dispatched.insert(keystrokes.clone()) {
 2337            cx.propagate();
 2338            return state.task.clone().unwrap();
 2339        }
 2340
 2341        state.queue.extend(keystrokes);
 2342
 2343        let keystrokes = self.dispatching_keystrokes.clone();
 2344        if state.task.is_none() {
 2345            state.task = Some(
 2346                window
 2347                    .spawn(cx, async move |cx| {
 2348                        // limit to 100 keystrokes to avoid infinite recursion.
 2349                        for _ in 0..100 {
 2350                            let mut state = keystrokes.borrow_mut();
 2351                            let Some(keystroke) = state.queue.pop_front() else {
 2352                                state.dispatched.clear();
 2353                                state.task.take();
 2354                                return;
 2355                            };
 2356                            drop(state);
 2357                            cx.update(|window, cx| {
 2358                                let focused = window.focused(cx);
 2359                                window.dispatch_keystroke(keystroke.clone(), cx);
 2360                                if window.focused(cx) != focused {
 2361                                    // dispatch_keystroke may cause the focus to change.
 2362                                    // draw's side effect is to schedule the FocusChanged events in the current flush effect cycle
 2363                                    // And we need that to happen before the next keystroke to keep vim mode happy...
 2364                                    // (Note that the tests always do this implicitly, so you must manually test with something like:
 2365                                    //   "bindings": { "g z": ["workspace::SendKeystrokes", ": j <enter> u"]}
 2366                                    // )
 2367                                    window.draw(cx).clear();
 2368                                }
 2369                            })
 2370                            .ok();
 2371                        }
 2372
 2373                        *keystrokes.borrow_mut() = Default::default();
 2374                        log::error!("over 100 keystrokes passed to send_keystrokes");
 2375                    })
 2376                    .shared(),
 2377            );
 2378        }
 2379        state.task.clone().unwrap()
 2380    }
 2381
 2382    fn save_all_internal(
 2383        &mut self,
 2384        mut save_intent: SaveIntent,
 2385        window: &mut Window,
 2386        cx: &mut Context<Self>,
 2387    ) -> Task<Result<bool>> {
 2388        if self.project.read(cx).is_disconnected(cx) {
 2389            return Task::ready(Ok(true));
 2390        }
 2391        let dirty_items = self
 2392            .panes
 2393            .iter()
 2394            .flat_map(|pane| {
 2395                pane.read(cx).items().filter_map(|item| {
 2396                    if item.is_dirty(cx) {
 2397                        item.tab_content_text(0, cx);
 2398                        Some((pane.downgrade(), item.boxed_clone()))
 2399                    } else {
 2400                        None
 2401                    }
 2402                })
 2403            })
 2404            .collect::<Vec<_>>();
 2405
 2406        let project = self.project.clone();
 2407        cx.spawn_in(window, async move |workspace, cx| {
 2408            let dirty_items = if save_intent == SaveIntent::Close && !dirty_items.is_empty() {
 2409                let (serialize_tasks, remaining_dirty_items) =
 2410                    workspace.update_in(cx, |workspace, window, cx| {
 2411                        let mut remaining_dirty_items = Vec::new();
 2412                        let mut serialize_tasks = Vec::new();
 2413                        for (pane, item) in dirty_items {
 2414                            if let Some(task) = item
 2415                                .to_serializable_item_handle(cx)
 2416                                .and_then(|handle| handle.serialize(workspace, true, window, cx))
 2417                            {
 2418                                serialize_tasks.push(task);
 2419                            } else {
 2420                                remaining_dirty_items.push((pane, item));
 2421                            }
 2422                        }
 2423                        (serialize_tasks, remaining_dirty_items)
 2424                    })?;
 2425
 2426                futures::future::try_join_all(serialize_tasks).await?;
 2427
 2428                if remaining_dirty_items.len() > 1 {
 2429                    let answer = workspace.update_in(cx, |_, window, cx| {
 2430                        let detail = Pane::file_names_for_prompt(
 2431                            &mut remaining_dirty_items.iter().map(|(_, handle)| handle),
 2432                            cx,
 2433                        );
 2434                        window.prompt(
 2435                            PromptLevel::Warning,
 2436                            &"Do you want to save all changes in the following files?",
 2437                            Some(&detail),
 2438                            &["Save all", "Discard all", "Cancel"],
 2439                            cx,
 2440                        )
 2441                    })?;
 2442                    match answer.await.log_err() {
 2443                        Some(0) => save_intent = SaveIntent::SaveAll,
 2444                        Some(1) => save_intent = SaveIntent::Skip,
 2445                        Some(2) => return Ok(false),
 2446                        _ => {}
 2447                    }
 2448                }
 2449
 2450                remaining_dirty_items
 2451            } else {
 2452                dirty_items
 2453            };
 2454
 2455            for (pane, item) in dirty_items {
 2456                let (singleton, project_entry_ids) =
 2457                    cx.update(|_, cx| (item.is_singleton(cx), item.project_entry_ids(cx)))?;
 2458                if singleton || !project_entry_ids.is_empty() {
 2459                    if !Pane::save_item(project.clone(), &pane, &*item, save_intent, cx).await? {
 2460                        return Ok(false);
 2461                    }
 2462                }
 2463            }
 2464            Ok(true)
 2465        })
 2466    }
 2467
 2468    pub fn open_workspace_for_paths(
 2469        &mut self,
 2470        replace_current_window: bool,
 2471        paths: Vec<PathBuf>,
 2472        window: &mut Window,
 2473        cx: &mut Context<Self>,
 2474    ) -> Task<Result<()>> {
 2475        let window_handle = window.window_handle().downcast::<Self>();
 2476        let is_remote = self.project.read(cx).is_via_collab();
 2477        let has_worktree = self.project.read(cx).worktrees(cx).next().is_some();
 2478        let has_dirty_items = self.items(cx).any(|item| item.is_dirty(cx));
 2479
 2480        let window_to_replace = if replace_current_window {
 2481            window_handle
 2482        } else if is_remote || has_worktree || has_dirty_items {
 2483            None
 2484        } else {
 2485            window_handle
 2486        };
 2487        let app_state = self.app_state.clone();
 2488
 2489        cx.spawn(async move |_, cx| {
 2490            cx.update(|cx| {
 2491                open_paths(
 2492                    &paths,
 2493                    app_state,
 2494                    OpenOptions {
 2495                        replace_window: window_to_replace,
 2496                        ..Default::default()
 2497                    },
 2498                    cx,
 2499                )
 2500            })?
 2501            .await?;
 2502            Ok(())
 2503        })
 2504    }
 2505
 2506    #[allow(clippy::type_complexity)]
 2507    pub fn open_paths(
 2508        &mut self,
 2509        mut abs_paths: Vec<PathBuf>,
 2510        options: OpenOptions,
 2511        pane: Option<WeakEntity<Pane>>,
 2512        window: &mut Window,
 2513        cx: &mut Context<Self>,
 2514    ) -> Task<Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>> {
 2515        log::info!("open paths {abs_paths:?}");
 2516
 2517        let fs = self.app_state.fs.clone();
 2518
 2519        // Sort the paths to ensure we add worktrees for parents before their children.
 2520        abs_paths.sort_unstable();
 2521        cx.spawn_in(window, async move |this, cx| {
 2522            let mut tasks = Vec::with_capacity(abs_paths.len());
 2523
 2524            for abs_path in &abs_paths {
 2525                let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
 2526                    OpenVisible::All => Some(true),
 2527                    OpenVisible::None => Some(false),
 2528                    OpenVisible::OnlyFiles => match fs.metadata(abs_path).await.log_err() {
 2529                        Some(Some(metadata)) => Some(!metadata.is_dir),
 2530                        Some(None) => Some(true),
 2531                        None => None,
 2532                    },
 2533                    OpenVisible::OnlyDirectories => match fs.metadata(abs_path).await.log_err() {
 2534                        Some(Some(metadata)) => Some(metadata.is_dir),
 2535                        Some(None) => Some(false),
 2536                        None => None,
 2537                    },
 2538                };
 2539                let project_path = match visible {
 2540                    Some(visible) => match this
 2541                        .update(cx, |this, cx| {
 2542                            Workspace::project_path_for_path(
 2543                                this.project.clone(),
 2544                                abs_path,
 2545                                visible,
 2546                                cx,
 2547                            )
 2548                        })
 2549                        .log_err()
 2550                    {
 2551                        Some(project_path) => project_path.await.log_err(),
 2552                        None => None,
 2553                    },
 2554                    None => None,
 2555                };
 2556
 2557                let this = this.clone();
 2558                let abs_path: Arc<Path> = SanitizedPath::from(abs_path.clone()).into();
 2559                let fs = fs.clone();
 2560                let pane = pane.clone();
 2561                let task = cx.spawn(async move |cx| {
 2562                    let (worktree, project_path) = project_path?;
 2563                    if fs.is_dir(&abs_path).await {
 2564                        this.update(cx, |workspace, cx| {
 2565                            let worktree = worktree.read(cx);
 2566                            let worktree_abs_path = worktree.abs_path();
 2567                            let entry_id = if abs_path.as_ref() == worktree_abs_path.as_ref() {
 2568                                worktree.root_entry()
 2569                            } else {
 2570                                abs_path
 2571                                    .strip_prefix(worktree_abs_path.as_ref())
 2572                                    .ok()
 2573                                    .and_then(|relative_path| {
 2574                                        worktree.entry_for_path(relative_path)
 2575                                    })
 2576                            }
 2577                            .map(|entry| entry.id);
 2578                            if let Some(entry_id) = entry_id {
 2579                                workspace.project.update(cx, |_, cx| {
 2580                                    cx.emit(project::Event::ActiveEntryChanged(Some(entry_id)));
 2581                                })
 2582                            }
 2583                        })
 2584                        .ok()?;
 2585                        None
 2586                    } else {
 2587                        Some(
 2588                            this.update_in(cx, |this, window, cx| {
 2589                                this.open_path(
 2590                                    project_path,
 2591                                    pane,
 2592                                    options.focus.unwrap_or(true),
 2593                                    window,
 2594                                    cx,
 2595                                )
 2596                            })
 2597                            .ok()?
 2598                            .await,
 2599                        )
 2600                    }
 2601                });
 2602                tasks.push(task);
 2603            }
 2604
 2605            futures::future::join_all(tasks).await
 2606        })
 2607    }
 2608
 2609    pub fn open_resolved_path(
 2610        &mut self,
 2611        path: ResolvedPath,
 2612        window: &mut Window,
 2613        cx: &mut Context<Self>,
 2614    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 2615        match path {
 2616            ResolvedPath::ProjectPath { project_path, .. } => {
 2617                self.open_path(project_path, None, true, window, cx)
 2618            }
 2619            ResolvedPath::AbsPath { path, .. } => self.open_abs_path(
 2620                path,
 2621                OpenOptions {
 2622                    visible: Some(OpenVisible::None),
 2623                    ..Default::default()
 2624                },
 2625                window,
 2626                cx,
 2627            ),
 2628        }
 2629    }
 2630
 2631    pub fn absolute_path_of_worktree(
 2632        &self,
 2633        worktree_id: WorktreeId,
 2634        cx: &mut Context<Self>,
 2635    ) -> Option<PathBuf> {
 2636        self.project
 2637            .read(cx)
 2638            .worktree_for_id(worktree_id, cx)
 2639            // TODO: use `abs_path` or `root_dir`
 2640            .map(|wt| wt.read(cx).abs_path().as_ref().to_path_buf())
 2641    }
 2642
 2643    fn add_folder_to_project(
 2644        &mut self,
 2645        _: &AddFolderToProject,
 2646        window: &mut Window,
 2647        cx: &mut Context<Self>,
 2648    ) {
 2649        let project = self.project.read(cx);
 2650        if project.is_via_collab() {
 2651            self.show_error(
 2652                &anyhow!("You cannot add folders to someone else's project"),
 2653                cx,
 2654            );
 2655            return;
 2656        }
 2657        let paths = self.prompt_for_open_path(
 2658            PathPromptOptions {
 2659                files: false,
 2660                directories: true,
 2661                multiple: true,
 2662            },
 2663            DirectoryLister::Project(self.project.clone()),
 2664            window,
 2665            cx,
 2666        );
 2667        cx.spawn_in(window, async move |this, cx| {
 2668            if let Some(paths) = paths.await.log_err().flatten() {
 2669                let results = this
 2670                    .update_in(cx, |this, window, cx| {
 2671                        this.open_paths(
 2672                            paths,
 2673                            OpenOptions {
 2674                                visible: Some(OpenVisible::All),
 2675                                ..Default::default()
 2676                            },
 2677                            None,
 2678                            window,
 2679                            cx,
 2680                        )
 2681                    })?
 2682                    .await;
 2683                for result in results.into_iter().flatten() {
 2684                    result.log_err();
 2685                }
 2686            }
 2687            anyhow::Ok(())
 2688        })
 2689        .detach_and_log_err(cx);
 2690    }
 2691
 2692    pub fn project_path_for_path(
 2693        project: Entity<Project>,
 2694        abs_path: &Path,
 2695        visible: bool,
 2696        cx: &mut App,
 2697    ) -> Task<Result<(Entity<Worktree>, ProjectPath)>> {
 2698        let entry = project.update(cx, |project, cx| {
 2699            project.find_or_create_worktree(abs_path, visible, cx)
 2700        });
 2701        cx.spawn(async move |cx| {
 2702            let (worktree, path) = entry.await?;
 2703            let worktree_id = worktree.read_with(cx, |t, _| t.id())?;
 2704            Ok((
 2705                worktree,
 2706                ProjectPath {
 2707                    worktree_id,
 2708                    path: path.into(),
 2709                },
 2710            ))
 2711        })
 2712    }
 2713
 2714    pub fn items<'a>(&'a self, cx: &'a App) -> impl 'a + Iterator<Item = &'a Box<dyn ItemHandle>> {
 2715        self.panes.iter().flat_map(|pane| pane.read(cx).items())
 2716    }
 2717
 2718    pub fn item_of_type<T: Item>(&self, cx: &App) -> Option<Entity<T>> {
 2719        self.items_of_type(cx).max_by_key(|item| item.item_id())
 2720    }
 2721
 2722    pub fn items_of_type<'a, T: Item>(
 2723        &'a self,
 2724        cx: &'a App,
 2725    ) -> impl 'a + Iterator<Item = Entity<T>> {
 2726        self.panes
 2727            .iter()
 2728            .flat_map(|pane| pane.read(cx).items_of_type())
 2729    }
 2730
 2731    pub fn active_item(&self, cx: &App) -> Option<Box<dyn ItemHandle>> {
 2732        self.active_pane().read(cx).active_item()
 2733    }
 2734
 2735    pub fn active_item_as<I: 'static>(&self, cx: &App) -> Option<Entity<I>> {
 2736        let item = self.active_item(cx)?;
 2737        item.to_any().downcast::<I>().ok()
 2738    }
 2739
 2740    fn active_project_path(&self, cx: &App) -> Option<ProjectPath> {
 2741        self.active_item(cx).and_then(|item| item.project_path(cx))
 2742    }
 2743
 2744    pub fn most_recent_active_path(&self, cx: &App) -> Option<PathBuf> {
 2745        self.recent_navigation_history_iter(cx)
 2746            .filter_map(|(path, abs_path)| {
 2747                let worktree = self
 2748                    .project
 2749                    .read(cx)
 2750                    .worktree_for_id(path.worktree_id, cx)?;
 2751                if worktree.read(cx).is_visible() {
 2752                    abs_path
 2753                } else {
 2754                    None
 2755                }
 2756            })
 2757            .next()
 2758    }
 2759
 2760    pub fn save_active_item(
 2761        &mut self,
 2762        save_intent: SaveIntent,
 2763        window: &mut Window,
 2764        cx: &mut App,
 2765    ) -> Task<Result<()>> {
 2766        let project = self.project.clone();
 2767        let pane = self.active_pane();
 2768        let item = pane.read(cx).active_item();
 2769        let pane = pane.downgrade();
 2770
 2771        window.spawn(cx, async move |mut cx| {
 2772            if let Some(item) = item {
 2773                Pane::save_item(project, &pane, item.as_ref(), save_intent, &mut cx)
 2774                    .await
 2775                    .map(|_| ())
 2776            } else {
 2777                Ok(())
 2778            }
 2779        })
 2780    }
 2781
 2782    pub fn close_inactive_items_and_panes(
 2783        &mut self,
 2784        action: &CloseInactiveTabsAndPanes,
 2785        window: &mut Window,
 2786        cx: &mut Context<Self>,
 2787    ) {
 2788        if let Some(task) = self.close_all_internal(
 2789            true,
 2790            action.save_intent.unwrap_or(SaveIntent::Close),
 2791            window,
 2792            cx,
 2793        ) {
 2794            task.detach_and_log_err(cx)
 2795        }
 2796    }
 2797
 2798    pub fn close_all_items_and_panes(
 2799        &mut self,
 2800        action: &CloseAllItemsAndPanes,
 2801        window: &mut Window,
 2802        cx: &mut Context<Self>,
 2803    ) {
 2804        if let Some(task) = self.close_all_internal(
 2805            false,
 2806            action.save_intent.unwrap_or(SaveIntent::Close),
 2807            window,
 2808            cx,
 2809        ) {
 2810            task.detach_and_log_err(cx)
 2811        }
 2812    }
 2813
 2814    fn close_all_internal(
 2815        &mut self,
 2816        retain_active_pane: bool,
 2817        save_intent: SaveIntent,
 2818        window: &mut Window,
 2819        cx: &mut Context<Self>,
 2820    ) -> Option<Task<Result<()>>> {
 2821        let current_pane = self.active_pane();
 2822
 2823        let mut tasks = Vec::new();
 2824
 2825        if retain_active_pane {
 2826            let current_pane_close = current_pane.update(cx, |pane, cx| {
 2827                pane.close_other_items(
 2828                    &CloseOtherItems {
 2829                        save_intent: None,
 2830                        close_pinned: false,
 2831                    },
 2832                    None,
 2833                    window,
 2834                    cx,
 2835                )
 2836            });
 2837
 2838            tasks.push(current_pane_close);
 2839        }
 2840
 2841        for pane in self.panes() {
 2842            if retain_active_pane && pane.entity_id() == current_pane.entity_id() {
 2843                continue;
 2844            }
 2845
 2846            let close_pane_items = pane.update(cx, |pane: &mut Pane, cx| {
 2847                pane.close_all_items(
 2848                    &CloseAllItems {
 2849                        save_intent: Some(save_intent),
 2850                        close_pinned: false,
 2851                    },
 2852                    window,
 2853                    cx,
 2854                )
 2855            });
 2856
 2857            tasks.push(close_pane_items)
 2858        }
 2859
 2860        if tasks.is_empty() {
 2861            None
 2862        } else {
 2863            Some(cx.spawn_in(window, async move |_, _| {
 2864                for task in tasks {
 2865                    task.await?
 2866                }
 2867                Ok(())
 2868            }))
 2869        }
 2870    }
 2871
 2872    pub fn is_dock_at_position_open(&self, position: DockPosition, cx: &mut Context<Self>) -> bool {
 2873        self.dock_at_position(position).read(cx).is_open()
 2874    }
 2875
 2876    pub fn toggle_dock(
 2877        &mut self,
 2878        dock_side: DockPosition,
 2879        window: &mut Window,
 2880        cx: &mut Context<Self>,
 2881    ) {
 2882        let dock = self.dock_at_position(dock_side);
 2883        let mut focus_center = false;
 2884        let mut reveal_dock = false;
 2885        dock.update(cx, |dock, cx| {
 2886            let other_is_zoomed = self.zoomed.is_some() && self.zoomed_position != Some(dock_side);
 2887            let was_visible = dock.is_open() && !other_is_zoomed;
 2888            dock.set_open(!was_visible, window, cx);
 2889
 2890            if dock.active_panel().is_none() {
 2891                let Some(panel_ix) = dock
 2892                    .first_enabled_panel_idx(cx)
 2893                    .log_with_level(log::Level::Info)
 2894                else {
 2895                    return;
 2896                };
 2897                dock.activate_panel(panel_ix, window, cx);
 2898            }
 2899
 2900            if let Some(active_panel) = dock.active_panel() {
 2901                if was_visible {
 2902                    if active_panel
 2903                        .panel_focus_handle(cx)
 2904                        .contains_focused(window, cx)
 2905                    {
 2906                        focus_center = true;
 2907                    }
 2908                } else {
 2909                    let focus_handle = &active_panel.panel_focus_handle(cx);
 2910                    window.focus(focus_handle);
 2911                    reveal_dock = true;
 2912                }
 2913            }
 2914        });
 2915
 2916        if reveal_dock {
 2917            self.dismiss_zoomed_items_to_reveal(Some(dock_side), window, cx);
 2918        }
 2919
 2920        if focus_center {
 2921            self.active_pane
 2922                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 2923        }
 2924
 2925        cx.notify();
 2926        self.serialize_workspace(window, cx);
 2927    }
 2928
 2929    fn active_dock(&self, window: &Window, cx: &Context<Self>) -> Option<&Entity<Dock>> {
 2930        self.all_docks().into_iter().find(|&dock| {
 2931            dock.read(cx).is_open() && dock.focus_handle(cx).contains_focused(window, cx)
 2932        })
 2933    }
 2934
 2935    fn close_active_dock(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
 2936        if let Some(dock) = self.active_dock(window, cx) {
 2937            dock.update(cx, |dock, cx| {
 2938                dock.set_open(false, window, cx);
 2939            });
 2940            return true;
 2941        }
 2942        false
 2943    }
 2944
 2945    pub fn close_all_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 2946        for dock in self.all_docks() {
 2947            dock.update(cx, |dock, cx| {
 2948                dock.set_open(false, window, cx);
 2949            });
 2950        }
 2951
 2952        cx.focus_self(window);
 2953        cx.notify();
 2954        self.serialize_workspace(window, cx);
 2955    }
 2956
 2957    /// Transfer focus to the panel of the given type.
 2958    pub fn focus_panel<T: Panel>(
 2959        &mut self,
 2960        window: &mut Window,
 2961        cx: &mut Context<Self>,
 2962    ) -> Option<Entity<T>> {
 2963        let panel = self.focus_or_unfocus_panel::<T>(window, cx, |_, _, _| true)?;
 2964        panel.to_any().downcast().ok()
 2965    }
 2966
 2967    /// Focus the panel of the given type if it isn't already focused. If it is
 2968    /// already focused, then transfer focus back to the workspace center.
 2969    pub fn toggle_panel_focus<T: Panel>(
 2970        &mut self,
 2971        window: &mut Window,
 2972        cx: &mut Context<Self>,
 2973    ) -> bool {
 2974        let mut did_focus_panel = false;
 2975        self.focus_or_unfocus_panel::<T>(window, cx, |panel, window, cx| {
 2976            did_focus_panel = !panel.panel_focus_handle(cx).contains_focused(window, cx);
 2977            did_focus_panel
 2978        });
 2979        did_focus_panel
 2980    }
 2981
 2982    pub fn activate_panel_for_proto_id(
 2983        &mut self,
 2984        panel_id: PanelId,
 2985        window: &mut Window,
 2986        cx: &mut Context<Self>,
 2987    ) -> Option<Arc<dyn PanelHandle>> {
 2988        let mut panel = None;
 2989        for dock in self.all_docks() {
 2990            if let Some(panel_index) = dock.read(cx).panel_index_for_proto_id(panel_id) {
 2991                panel = dock.update(cx, |dock, cx| {
 2992                    dock.activate_panel(panel_index, window, cx);
 2993                    dock.set_open(true, window, cx);
 2994                    dock.active_panel().cloned()
 2995                });
 2996                break;
 2997            }
 2998        }
 2999
 3000        if panel.is_some() {
 3001            cx.notify();
 3002            self.serialize_workspace(window, cx);
 3003        }
 3004
 3005        panel
 3006    }
 3007
 3008    /// Focus or unfocus the given panel type, depending on the given callback.
 3009    fn focus_or_unfocus_panel<T: Panel>(
 3010        &mut self,
 3011        window: &mut Window,
 3012        cx: &mut Context<Self>,
 3013        mut should_focus: impl FnMut(&dyn PanelHandle, &mut Window, &mut Context<Dock>) -> bool,
 3014    ) -> Option<Arc<dyn PanelHandle>> {
 3015        let mut result_panel = None;
 3016        let mut serialize = false;
 3017        for dock in self.all_docks() {
 3018            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3019                let mut focus_center = false;
 3020                let panel = dock.update(cx, |dock, cx| {
 3021                    dock.activate_panel(panel_index, window, cx);
 3022
 3023                    let panel = dock.active_panel().cloned();
 3024                    if let Some(panel) = panel.as_ref() {
 3025                        if should_focus(&**panel, window, cx) {
 3026                            dock.set_open(true, window, cx);
 3027                            panel.panel_focus_handle(cx).focus(window);
 3028                        } else {
 3029                            focus_center = true;
 3030                        }
 3031                    }
 3032                    panel
 3033                });
 3034
 3035                if focus_center {
 3036                    self.active_pane
 3037                        .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3038                }
 3039
 3040                result_panel = panel;
 3041                serialize = true;
 3042                break;
 3043            }
 3044        }
 3045
 3046        if serialize {
 3047            self.serialize_workspace(window, cx);
 3048        }
 3049
 3050        cx.notify();
 3051        result_panel
 3052    }
 3053
 3054    /// Open the panel of the given type
 3055    pub fn open_panel<T: Panel>(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3056        for dock in self.all_docks() {
 3057            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3058                dock.update(cx, |dock, cx| {
 3059                    dock.activate_panel(panel_index, window, cx);
 3060                    dock.set_open(true, window, cx);
 3061                });
 3062            }
 3063        }
 3064    }
 3065
 3066    pub fn panel<T: Panel>(&self, cx: &App) -> Option<Entity<T>> {
 3067        self.all_docks()
 3068            .iter()
 3069            .find_map(|dock| dock.read(cx).panel::<T>())
 3070    }
 3071
 3072    fn dismiss_zoomed_items_to_reveal(
 3073        &mut self,
 3074        dock_to_reveal: Option<DockPosition>,
 3075        window: &mut Window,
 3076        cx: &mut Context<Self>,
 3077    ) {
 3078        // If a center pane is zoomed, unzoom it.
 3079        for pane in &self.panes {
 3080            if pane != &self.active_pane || dock_to_reveal.is_some() {
 3081                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 3082            }
 3083        }
 3084
 3085        // If another dock is zoomed, hide it.
 3086        let mut focus_center = false;
 3087        for dock in self.all_docks() {
 3088            dock.update(cx, |dock, cx| {
 3089                if Some(dock.position()) != dock_to_reveal {
 3090                    if let Some(panel) = dock.active_panel() {
 3091                        if panel.is_zoomed(window, cx) {
 3092                            focus_center |=
 3093                                panel.panel_focus_handle(cx).contains_focused(window, cx);
 3094                            dock.set_open(false, window, cx);
 3095                        }
 3096                    }
 3097                }
 3098            });
 3099        }
 3100
 3101        if focus_center {
 3102            self.active_pane
 3103                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3104        }
 3105
 3106        if self.zoomed_position != dock_to_reveal {
 3107            self.zoomed = None;
 3108            self.zoomed_position = None;
 3109            cx.emit(Event::ZoomChanged);
 3110        }
 3111
 3112        cx.notify();
 3113    }
 3114
 3115    fn add_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 3116        let pane = cx.new(|cx| {
 3117            let mut pane = Pane::new(
 3118                self.weak_handle(),
 3119                self.project.clone(),
 3120                self.pane_history_timestamp.clone(),
 3121                None,
 3122                NewFile.boxed_clone(),
 3123                window,
 3124                cx,
 3125            );
 3126            pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 3127            pane
 3128        });
 3129        cx.subscribe_in(&pane, window, Self::handle_pane_event)
 3130            .detach();
 3131        self.panes.push(pane.clone());
 3132
 3133        window.focus(&pane.focus_handle(cx));
 3134
 3135        cx.emit(Event::PaneAdded(pane.clone()));
 3136        pane
 3137    }
 3138
 3139    pub fn add_item_to_center(
 3140        &mut self,
 3141        item: Box<dyn ItemHandle>,
 3142        window: &mut Window,
 3143        cx: &mut Context<Self>,
 3144    ) -> bool {
 3145        if let Some(center_pane) = self.last_active_center_pane.clone() {
 3146            if let Some(center_pane) = center_pane.upgrade() {
 3147                center_pane.update(cx, |pane, cx| {
 3148                    pane.add_item(item, true, true, None, window, cx)
 3149                });
 3150                true
 3151            } else {
 3152                false
 3153            }
 3154        } else {
 3155            false
 3156        }
 3157    }
 3158
 3159    pub fn add_item_to_active_pane(
 3160        &mut self,
 3161        item: Box<dyn ItemHandle>,
 3162        destination_index: Option<usize>,
 3163        focus_item: bool,
 3164        window: &mut Window,
 3165        cx: &mut App,
 3166    ) {
 3167        self.add_item(
 3168            self.active_pane.clone(),
 3169            item,
 3170            destination_index,
 3171            false,
 3172            focus_item,
 3173            window,
 3174            cx,
 3175        )
 3176    }
 3177
 3178    pub fn add_item(
 3179        &mut self,
 3180        pane: Entity<Pane>,
 3181        item: Box<dyn ItemHandle>,
 3182        destination_index: Option<usize>,
 3183        activate_pane: bool,
 3184        focus_item: bool,
 3185        window: &mut Window,
 3186        cx: &mut App,
 3187    ) {
 3188        if let Some(text) = item.telemetry_event_text(cx) {
 3189            telemetry::event!(text);
 3190        }
 3191
 3192        pane.update(cx, |pane, cx| {
 3193            pane.add_item(
 3194                item,
 3195                activate_pane,
 3196                focus_item,
 3197                destination_index,
 3198                window,
 3199                cx,
 3200            )
 3201        });
 3202    }
 3203
 3204    pub fn split_item(
 3205        &mut self,
 3206        split_direction: SplitDirection,
 3207        item: Box<dyn ItemHandle>,
 3208        window: &mut Window,
 3209        cx: &mut Context<Self>,
 3210    ) {
 3211        let new_pane = self.split_pane(self.active_pane.clone(), split_direction, window, cx);
 3212        self.add_item(new_pane, item, None, true, true, window, cx);
 3213    }
 3214
 3215    pub fn open_abs_path(
 3216        &mut self,
 3217        abs_path: PathBuf,
 3218        options: OpenOptions,
 3219        window: &mut Window,
 3220        cx: &mut Context<Self>,
 3221    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3222        cx.spawn_in(window, async move |workspace, cx| {
 3223            let open_paths_task_result = workspace
 3224                .update_in(cx, |workspace, window, cx| {
 3225                    workspace.open_paths(vec![abs_path.clone()], options, None, window, cx)
 3226                })
 3227                .with_context(|| format!("open abs path {abs_path:?} task spawn"))?
 3228                .await;
 3229            anyhow::ensure!(
 3230                open_paths_task_result.len() == 1,
 3231                "open abs path {abs_path:?} task returned incorrect number of results"
 3232            );
 3233            match open_paths_task_result
 3234                .into_iter()
 3235                .next()
 3236                .expect("ensured single task result")
 3237            {
 3238                Some(open_result) => {
 3239                    open_result.with_context(|| format!("open abs path {abs_path:?} task join"))
 3240                }
 3241                None => anyhow::bail!("open abs path {abs_path:?} task returned None"),
 3242            }
 3243        })
 3244    }
 3245
 3246    pub fn split_abs_path(
 3247        &mut self,
 3248        abs_path: PathBuf,
 3249        visible: bool,
 3250        window: &mut Window,
 3251        cx: &mut Context<Self>,
 3252    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3253        let project_path_task =
 3254            Workspace::project_path_for_path(self.project.clone(), &abs_path, visible, cx);
 3255        cx.spawn_in(window, async move |this, cx| {
 3256            let (_, path) = project_path_task.await?;
 3257            this.update_in(cx, |this, window, cx| this.split_path(path, window, cx))?
 3258                .await
 3259        })
 3260    }
 3261
 3262    pub fn open_path(
 3263        &mut self,
 3264        path: impl Into<ProjectPath>,
 3265        pane: Option<WeakEntity<Pane>>,
 3266        focus_item: bool,
 3267        window: &mut Window,
 3268        cx: &mut App,
 3269    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3270        self.open_path_preview(path, pane, focus_item, false, true, window, cx)
 3271    }
 3272
 3273    pub fn open_path_preview(
 3274        &mut self,
 3275        path: impl Into<ProjectPath>,
 3276        pane: Option<WeakEntity<Pane>>,
 3277        focus_item: bool,
 3278        allow_preview: bool,
 3279        activate: bool,
 3280        window: &mut Window,
 3281        cx: &mut App,
 3282    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3283        let pane = pane.unwrap_or_else(|| {
 3284            self.last_active_center_pane.clone().unwrap_or_else(|| {
 3285                self.panes
 3286                    .first()
 3287                    .expect("There must be an active pane")
 3288                    .downgrade()
 3289            })
 3290        });
 3291
 3292        let project_path = path.into();
 3293        let task = self.load_path(project_path.clone(), window, cx);
 3294        window.spawn(cx, async move |cx| {
 3295            let (project_entry_id, build_item) = task.await?;
 3296            let result = pane.update_in(cx, |pane, window, cx| {
 3297                pane.open_item(
 3298                    project_entry_id,
 3299                    project_path,
 3300                    focus_item,
 3301                    allow_preview,
 3302                    activate,
 3303                    None,
 3304                    window,
 3305                    cx,
 3306                    build_item,
 3307                )
 3308            });
 3309            result
 3310        })
 3311    }
 3312
 3313    pub fn split_path(
 3314        &mut self,
 3315        path: impl Into<ProjectPath>,
 3316        window: &mut Window,
 3317        cx: &mut Context<Self>,
 3318    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3319        self.split_path_preview(path, false, None, window, cx)
 3320    }
 3321
 3322    pub fn split_path_preview(
 3323        &mut self,
 3324        path: impl Into<ProjectPath>,
 3325        allow_preview: bool,
 3326        split_direction: Option<SplitDirection>,
 3327        window: &mut Window,
 3328        cx: &mut Context<Self>,
 3329    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3330        let pane = self.last_active_center_pane.clone().unwrap_or_else(|| {
 3331            self.panes
 3332                .first()
 3333                .expect("There must be an active pane")
 3334                .downgrade()
 3335        });
 3336
 3337        if let Member::Pane(center_pane) = &self.center.root {
 3338            if center_pane.read(cx).items_len() == 0 {
 3339                return self.open_path(path, Some(pane), true, window, cx);
 3340            }
 3341        }
 3342
 3343        let project_path = path.into();
 3344        let task = self.load_path(project_path.clone(), window, cx);
 3345        cx.spawn_in(window, async move |this, cx| {
 3346            let (project_entry_id, build_item) = task.await?;
 3347            this.update_in(cx, move |this, window, cx| -> Option<_> {
 3348                let pane = pane.upgrade()?;
 3349                let new_pane = this.split_pane(
 3350                    pane,
 3351                    split_direction.unwrap_or(SplitDirection::Right),
 3352                    window,
 3353                    cx,
 3354                );
 3355                new_pane.update(cx, |new_pane, cx| {
 3356                    Some(new_pane.open_item(
 3357                        project_entry_id,
 3358                        project_path,
 3359                        true,
 3360                        allow_preview,
 3361                        true,
 3362                        None,
 3363                        window,
 3364                        cx,
 3365                        build_item,
 3366                    ))
 3367                })
 3368            })
 3369            .map(|option| option.context("pane was dropped"))?
 3370        })
 3371    }
 3372
 3373    fn load_path(
 3374        &mut self,
 3375        path: ProjectPath,
 3376        window: &mut Window,
 3377        cx: &mut App,
 3378    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
 3379        let project = self.project().clone();
 3380        let registry = cx.default_global::<ProjectItemRegistry>().clone();
 3381        registry.open_path(&project, &path, window, cx)
 3382    }
 3383
 3384    pub fn find_project_item<T>(
 3385        &self,
 3386        pane: &Entity<Pane>,
 3387        project_item: &Entity<T::Item>,
 3388        cx: &App,
 3389    ) -> Option<Entity<T>>
 3390    where
 3391        T: ProjectItem,
 3392    {
 3393        use project::ProjectItem as _;
 3394        let project_item = project_item.read(cx);
 3395        let entry_id = project_item.entry_id(cx);
 3396        let project_path = project_item.project_path(cx);
 3397
 3398        let mut item = None;
 3399        if let Some(entry_id) = entry_id {
 3400            item = pane.read(cx).item_for_entry(entry_id, cx);
 3401        }
 3402        if item.is_none() {
 3403            if let Some(project_path) = project_path {
 3404                item = pane.read(cx).item_for_path(project_path, cx);
 3405            }
 3406        }
 3407
 3408        item.and_then(|item| item.downcast::<T>())
 3409    }
 3410
 3411    pub fn is_project_item_open<T>(
 3412        &self,
 3413        pane: &Entity<Pane>,
 3414        project_item: &Entity<T::Item>,
 3415        cx: &App,
 3416    ) -> bool
 3417    where
 3418        T: ProjectItem,
 3419    {
 3420        self.find_project_item::<T>(pane, project_item, cx)
 3421            .is_some()
 3422    }
 3423
 3424    pub fn open_project_item<T>(
 3425        &mut self,
 3426        pane: Entity<Pane>,
 3427        project_item: Entity<T::Item>,
 3428        activate_pane: bool,
 3429        focus_item: bool,
 3430        window: &mut Window,
 3431        cx: &mut Context<Self>,
 3432    ) -> Entity<T>
 3433    where
 3434        T: ProjectItem,
 3435    {
 3436        if let Some(item) = self.find_project_item(&pane, &project_item, cx) {
 3437            self.activate_item(&item, activate_pane, focus_item, window, cx);
 3438            return item;
 3439        }
 3440
 3441        let item = pane.update(cx, |pane, cx| {
 3442            cx.new(|cx| {
 3443                T::for_project_item(self.project().clone(), Some(pane), project_item, window, cx)
 3444            })
 3445        });
 3446        let item_id = item.item_id();
 3447        let mut destination_index = None;
 3448        pane.update(cx, |pane, cx| {
 3449            if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation {
 3450                if let Some(preview_item_id) = pane.preview_item_id() {
 3451                    if preview_item_id != item_id {
 3452                        destination_index = pane.close_current_preview_item(window, cx);
 3453                    }
 3454                }
 3455            }
 3456            pane.set_preview_item_id(Some(item.item_id()), cx)
 3457        });
 3458
 3459        self.add_item(
 3460            pane,
 3461            Box::new(item.clone()),
 3462            destination_index,
 3463            activate_pane,
 3464            focus_item,
 3465            window,
 3466            cx,
 3467        );
 3468        item
 3469    }
 3470
 3471    pub fn open_shared_screen(
 3472        &mut self,
 3473        peer_id: PeerId,
 3474        window: &mut Window,
 3475        cx: &mut Context<Self>,
 3476    ) {
 3477        if let Some(shared_screen) =
 3478            self.shared_screen_for_peer(peer_id, &self.active_pane, window, cx)
 3479        {
 3480            self.active_pane.update(cx, |pane, cx| {
 3481                pane.add_item(Box::new(shared_screen), false, true, None, window, cx)
 3482            });
 3483        }
 3484    }
 3485
 3486    pub fn activate_item(
 3487        &mut self,
 3488        item: &dyn ItemHandle,
 3489        activate_pane: bool,
 3490        focus_item: bool,
 3491        window: &mut Window,
 3492        cx: &mut App,
 3493    ) -> bool {
 3494        let result = self.panes.iter().find_map(|pane| {
 3495            pane.read(cx)
 3496                .index_for_item(item)
 3497                .map(|ix| (pane.clone(), ix))
 3498        });
 3499        if let Some((pane, ix)) = result {
 3500            pane.update(cx, |pane, cx| {
 3501                pane.activate_item(ix, activate_pane, focus_item, window, cx)
 3502            });
 3503            true
 3504        } else {
 3505            false
 3506        }
 3507    }
 3508
 3509    fn activate_pane_at_index(
 3510        &mut self,
 3511        action: &ActivatePane,
 3512        window: &mut Window,
 3513        cx: &mut Context<Self>,
 3514    ) {
 3515        let panes = self.center.panes();
 3516        if let Some(pane) = panes.get(action.0).map(|p| (*p).clone()) {
 3517            window.focus(&pane.focus_handle(cx));
 3518        } else {
 3519            self.split_and_clone(self.active_pane.clone(), SplitDirection::Right, window, cx);
 3520        }
 3521    }
 3522
 3523    fn move_item_to_pane_at_index(
 3524        &mut self,
 3525        action: &MoveItemToPane,
 3526        window: &mut Window,
 3527        cx: &mut Context<Self>,
 3528    ) {
 3529        let panes = self.center.panes();
 3530        let destination = match panes.get(action.destination) {
 3531            Some(&destination) => destination.clone(),
 3532            None => {
 3533                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3534                    return;
 3535                }
 3536                let direction = SplitDirection::Right;
 3537                let split_off_pane = self
 3538                    .find_pane_in_direction(direction, cx)
 3539                    .unwrap_or_else(|| self.active_pane.clone());
 3540                let new_pane = self.add_pane(window, cx);
 3541                if self
 3542                    .center
 3543                    .split(&split_off_pane, &new_pane, direction)
 3544                    .log_err()
 3545                    .is_none()
 3546                {
 3547                    return;
 3548                };
 3549                new_pane
 3550            }
 3551        };
 3552
 3553        if action.clone {
 3554            clone_active_item(
 3555                self.database_id(),
 3556                &self.active_pane,
 3557                &destination,
 3558                action.focus,
 3559                window,
 3560                cx,
 3561            )
 3562        } else {
 3563            move_active_item(
 3564                &self.active_pane,
 3565                &destination,
 3566                action.focus,
 3567                true,
 3568                window,
 3569                cx,
 3570            )
 3571        }
 3572    }
 3573
 3574    pub fn activate_next_pane(&mut self, window: &mut Window, cx: &mut App) {
 3575        let panes = self.center.panes();
 3576        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3577            let next_ix = (ix + 1) % panes.len();
 3578            let next_pane = panes[next_ix].clone();
 3579            window.focus(&next_pane.focus_handle(cx));
 3580        }
 3581    }
 3582
 3583    pub fn activate_previous_pane(&mut self, window: &mut Window, cx: &mut App) {
 3584        let panes = self.center.panes();
 3585        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3586            let prev_ix = cmp::min(ix.wrapping_sub(1), panes.len() - 1);
 3587            let prev_pane = panes[prev_ix].clone();
 3588            window.focus(&prev_pane.focus_handle(cx));
 3589        }
 3590    }
 3591
 3592    pub fn activate_pane_in_direction(
 3593        &mut self,
 3594        direction: SplitDirection,
 3595        window: &mut Window,
 3596        cx: &mut App,
 3597    ) {
 3598        use ActivateInDirectionTarget as Target;
 3599        enum Origin {
 3600            LeftDock,
 3601            RightDock,
 3602            BottomDock,
 3603            Center,
 3604        }
 3605
 3606        let origin: Origin = [
 3607            (&self.left_dock, Origin::LeftDock),
 3608            (&self.right_dock, Origin::RightDock),
 3609            (&self.bottom_dock, Origin::BottomDock),
 3610        ]
 3611        .into_iter()
 3612        .find_map(|(dock, origin)| {
 3613            if dock.focus_handle(cx).contains_focused(window, cx) && dock.read(cx).is_open() {
 3614                Some(origin)
 3615            } else {
 3616                None
 3617            }
 3618        })
 3619        .unwrap_or(Origin::Center);
 3620
 3621        let get_last_active_pane = || {
 3622            let pane = self
 3623                .last_active_center_pane
 3624                .clone()
 3625                .unwrap_or_else(|| {
 3626                    self.panes
 3627                        .first()
 3628                        .expect("There must be an active pane")
 3629                        .downgrade()
 3630                })
 3631                .upgrade()?;
 3632            (pane.read(cx).items_len() != 0).then_some(pane)
 3633        };
 3634
 3635        let try_dock =
 3636            |dock: &Entity<Dock>| dock.read(cx).is_open().then(|| Target::Dock(dock.clone()));
 3637
 3638        let target = match (origin, direction) {
 3639            // We're in the center, so we first try to go to a different pane,
 3640            // otherwise try to go to a dock.
 3641            (Origin::Center, direction) => {
 3642                if let Some(pane) = self.find_pane_in_direction(direction, cx) {
 3643                    Some(Target::Pane(pane))
 3644                } else {
 3645                    match direction {
 3646                        SplitDirection::Up => None,
 3647                        SplitDirection::Down => try_dock(&self.bottom_dock),
 3648                        SplitDirection::Left => try_dock(&self.left_dock),
 3649                        SplitDirection::Right => try_dock(&self.right_dock),
 3650                    }
 3651                }
 3652            }
 3653
 3654            (Origin::LeftDock, SplitDirection::Right) => {
 3655                if let Some(last_active_pane) = get_last_active_pane() {
 3656                    Some(Target::Pane(last_active_pane))
 3657                } else {
 3658                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.right_dock))
 3659                }
 3660            }
 3661
 3662            (Origin::LeftDock, SplitDirection::Down)
 3663            | (Origin::RightDock, SplitDirection::Down) => try_dock(&self.bottom_dock),
 3664
 3665            (Origin::BottomDock, SplitDirection::Up) => get_last_active_pane().map(Target::Pane),
 3666            (Origin::BottomDock, SplitDirection::Left) => try_dock(&self.left_dock),
 3667            (Origin::BottomDock, SplitDirection::Right) => try_dock(&self.right_dock),
 3668
 3669            (Origin::RightDock, SplitDirection::Left) => {
 3670                if let Some(last_active_pane) = get_last_active_pane() {
 3671                    Some(Target::Pane(last_active_pane))
 3672                } else {
 3673                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.left_dock))
 3674                }
 3675            }
 3676
 3677            _ => None,
 3678        };
 3679
 3680        match target {
 3681            Some(ActivateInDirectionTarget::Pane(pane)) => {
 3682                let pane = pane.read(cx);
 3683                if let Some(item) = pane.active_item() {
 3684                    item.item_focus_handle(cx).focus(window);
 3685                } else {
 3686                    log::error!(
 3687                        "Could not find a focus target when in switching focus in {direction} direction for a pane",
 3688                    );
 3689                }
 3690            }
 3691            Some(ActivateInDirectionTarget::Dock(dock)) => {
 3692                // Defer this to avoid a panic when the dock's active panel is already on the stack.
 3693                window.defer(cx, move |window, cx| {
 3694                    let dock = dock.read(cx);
 3695                    if let Some(panel) = dock.active_panel() {
 3696                        panel.panel_focus_handle(cx).focus(window);
 3697                    } else {
 3698                        log::error!("Could not find a focus target when in switching focus in {direction} direction for a {:?} dock", dock.position());
 3699                    }
 3700                })
 3701            }
 3702            None => {}
 3703        }
 3704    }
 3705
 3706    pub fn move_item_to_pane_in_direction(
 3707        &mut self,
 3708        action: &MoveItemToPaneInDirection,
 3709        window: &mut Window,
 3710        cx: &mut Context<Self>,
 3711    ) {
 3712        let destination = match self.find_pane_in_direction(action.direction, cx) {
 3713            Some(destination) => destination,
 3714            None => {
 3715                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3716                    return;
 3717                }
 3718                let new_pane = self.add_pane(window, cx);
 3719                if self
 3720                    .center
 3721                    .split(&self.active_pane, &new_pane, action.direction)
 3722                    .log_err()
 3723                    .is_none()
 3724                {
 3725                    return;
 3726                };
 3727                new_pane
 3728            }
 3729        };
 3730
 3731        if action.clone {
 3732            clone_active_item(
 3733                self.database_id(),
 3734                &self.active_pane,
 3735                &destination,
 3736                action.focus,
 3737                window,
 3738                cx,
 3739            )
 3740        } else {
 3741            move_active_item(
 3742                &self.active_pane,
 3743                &destination,
 3744                action.focus,
 3745                true,
 3746                window,
 3747                cx,
 3748            );
 3749        }
 3750    }
 3751
 3752    pub fn bounding_box_for_pane(&self, pane: &Entity<Pane>) -> Option<Bounds<Pixels>> {
 3753        self.center.bounding_box_for_pane(pane)
 3754    }
 3755
 3756    pub fn find_pane_in_direction(
 3757        &mut self,
 3758        direction: SplitDirection,
 3759        cx: &App,
 3760    ) -> Option<Entity<Pane>> {
 3761        self.center
 3762            .find_pane_in_direction(&self.active_pane, direction, cx)
 3763            .cloned()
 3764    }
 3765
 3766    pub fn swap_pane_in_direction(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 3767        if let Some(to) = self.find_pane_in_direction(direction, cx) {
 3768            self.center.swap(&self.active_pane, &to);
 3769            cx.notify();
 3770        }
 3771    }
 3772
 3773    pub fn resize_pane(
 3774        &mut self,
 3775        axis: gpui::Axis,
 3776        amount: Pixels,
 3777        window: &mut Window,
 3778        cx: &mut Context<Self>,
 3779    ) {
 3780        let docks = self.all_docks();
 3781        let active_dock = docks
 3782            .into_iter()
 3783            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 3784
 3785        if let Some(dock) = active_dock {
 3786            let Some(panel_size) = dock.read(cx).active_panel_size(window, cx) else {
 3787                return;
 3788            };
 3789            match dock.read(cx).position() {
 3790                DockPosition::Left => self.resize_left_dock(panel_size + amount, window, cx),
 3791                DockPosition::Bottom => self.resize_bottom_dock(panel_size + amount, window, cx),
 3792                DockPosition::Right => self.resize_right_dock(panel_size + amount, window, cx),
 3793            }
 3794        } else {
 3795            self.center
 3796                .resize(&self.active_pane, axis, amount, &self.bounds);
 3797        }
 3798        cx.notify();
 3799    }
 3800
 3801    pub fn reset_pane_sizes(&mut self, cx: &mut Context<Self>) {
 3802        self.center.reset_pane_sizes();
 3803        cx.notify();
 3804    }
 3805
 3806    fn handle_pane_focused(
 3807        &mut self,
 3808        pane: Entity<Pane>,
 3809        window: &mut Window,
 3810        cx: &mut Context<Self>,
 3811    ) {
 3812        // This is explicitly hoisted out of the following check for pane identity as
 3813        // terminal panel panes are not registered as a center panes.
 3814        self.status_bar.update(cx, |status_bar, cx| {
 3815            status_bar.set_active_pane(&pane, window, cx);
 3816        });
 3817        if self.active_pane != pane {
 3818            self.set_active_pane(&pane, window, cx);
 3819        }
 3820
 3821        if self.last_active_center_pane.is_none() {
 3822            self.last_active_center_pane = Some(pane.downgrade());
 3823        }
 3824
 3825        self.dismiss_zoomed_items_to_reveal(None, window, cx);
 3826        if pane.read(cx).is_zoomed() {
 3827            self.zoomed = Some(pane.downgrade().into());
 3828        } else {
 3829            self.zoomed = None;
 3830        }
 3831        self.zoomed_position = None;
 3832        cx.emit(Event::ZoomChanged);
 3833        self.update_active_view_for_followers(window, cx);
 3834        pane.update(cx, |pane, _| {
 3835            pane.track_alternate_file_items();
 3836        });
 3837
 3838        cx.notify();
 3839    }
 3840
 3841    fn set_active_pane(
 3842        &mut self,
 3843        pane: &Entity<Pane>,
 3844        window: &mut Window,
 3845        cx: &mut Context<Self>,
 3846    ) {
 3847        self.active_pane = pane.clone();
 3848        self.active_item_path_changed(window, cx);
 3849        self.last_active_center_pane = Some(pane.downgrade());
 3850    }
 3851
 3852    fn handle_panel_focused(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3853        self.update_active_view_for_followers(window, cx);
 3854    }
 3855
 3856    fn handle_pane_event(
 3857        &mut self,
 3858        pane: &Entity<Pane>,
 3859        event: &pane::Event,
 3860        window: &mut Window,
 3861        cx: &mut Context<Self>,
 3862    ) {
 3863        let mut serialize_workspace = true;
 3864        match event {
 3865            pane::Event::AddItem { item } => {
 3866                item.added_to_pane(self, pane.clone(), window, cx);
 3867                cx.emit(Event::ItemAdded {
 3868                    item: item.boxed_clone(),
 3869                });
 3870            }
 3871            pane::Event::Split(direction) => {
 3872                self.split_and_clone(pane.clone(), *direction, window, cx);
 3873            }
 3874            pane::Event::JoinIntoNext => {
 3875                self.join_pane_into_next(pane.clone(), window, cx);
 3876            }
 3877            pane::Event::JoinAll => {
 3878                self.join_all_panes(window, cx);
 3879            }
 3880            pane::Event::Remove { focus_on_pane } => {
 3881                self.remove_pane(pane.clone(), focus_on_pane.clone(), window, cx);
 3882            }
 3883            pane::Event::ActivateItem {
 3884                local,
 3885                focus_changed,
 3886            } => {
 3887                cx.on_next_frame(window, |_, window, _| {
 3888                    window.invalidate_character_coordinates();
 3889                });
 3890
 3891                pane.update(cx, |pane, _| {
 3892                    pane.track_alternate_file_items();
 3893                });
 3894                if *local {
 3895                    self.unfollow_in_pane(&pane, window, cx);
 3896                }
 3897                serialize_workspace = *focus_changed || pane != self.active_pane();
 3898                if pane == self.active_pane() {
 3899                    self.active_item_path_changed(window, cx);
 3900                    self.update_active_view_for_followers(window, cx);
 3901                } else if *local {
 3902                    self.set_active_pane(&pane, window, cx);
 3903                }
 3904            }
 3905            pane::Event::UserSavedItem { item, save_intent } => {
 3906                cx.emit(Event::UserSavedItem {
 3907                    pane: pane.downgrade(),
 3908                    item: item.boxed_clone(),
 3909                    save_intent: *save_intent,
 3910                });
 3911                serialize_workspace = false;
 3912            }
 3913            pane::Event::ChangeItemTitle => {
 3914                if *pane == self.active_pane {
 3915                    self.active_item_path_changed(window, cx);
 3916                }
 3917                serialize_workspace = false;
 3918            }
 3919            pane::Event::RemoveItem { .. } => {}
 3920            pane::Event::RemovedItem { item } => {
 3921                cx.emit(Event::ActiveItemChanged);
 3922                self.update_window_edited(window, cx);
 3923                if let hash_map::Entry::Occupied(entry) = self.panes_by_item.entry(item.item_id()) {
 3924                    if entry.get().entity_id() == pane.entity_id() {
 3925                        entry.remove();
 3926                    }
 3927                }
 3928            }
 3929            pane::Event::Focus => {
 3930                cx.on_next_frame(window, |_, window, _| {
 3931                    window.invalidate_character_coordinates();
 3932                });
 3933                self.handle_pane_focused(pane.clone(), window, cx);
 3934            }
 3935            pane::Event::ZoomIn => {
 3936                if *pane == self.active_pane {
 3937                    pane.update(cx, |pane, cx| pane.set_zoomed(true, cx));
 3938                    if pane.read(cx).has_focus(window, cx) {
 3939                        self.zoomed = Some(pane.downgrade().into());
 3940                        self.zoomed_position = None;
 3941                        cx.emit(Event::ZoomChanged);
 3942                    }
 3943                    cx.notify();
 3944                }
 3945            }
 3946            pane::Event::ZoomOut => {
 3947                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 3948                if self.zoomed_position.is_none() {
 3949                    self.zoomed = None;
 3950                    cx.emit(Event::ZoomChanged);
 3951                }
 3952                cx.notify();
 3953            }
 3954            pane::Event::ItemPinned | pane::Event::ItemUnpinned => {}
 3955        }
 3956
 3957        if serialize_workspace {
 3958            self.serialize_workspace(window, cx);
 3959        }
 3960    }
 3961
 3962    pub fn unfollow_in_pane(
 3963        &mut self,
 3964        pane: &Entity<Pane>,
 3965        window: &mut Window,
 3966        cx: &mut Context<Workspace>,
 3967    ) -> Option<CollaboratorId> {
 3968        let leader_id = self.leader_for_pane(pane)?;
 3969        self.unfollow(leader_id, window, cx);
 3970        Some(leader_id)
 3971    }
 3972
 3973    pub fn split_pane(
 3974        &mut self,
 3975        pane_to_split: Entity<Pane>,
 3976        split_direction: SplitDirection,
 3977        window: &mut Window,
 3978        cx: &mut Context<Self>,
 3979    ) -> Entity<Pane> {
 3980        let new_pane = self.add_pane(window, cx);
 3981        self.center
 3982            .split(&pane_to_split, &new_pane, split_direction)
 3983            .unwrap();
 3984        cx.notify();
 3985        new_pane
 3986    }
 3987
 3988    pub fn split_and_clone(
 3989        &mut self,
 3990        pane: Entity<Pane>,
 3991        direction: SplitDirection,
 3992        window: &mut Window,
 3993        cx: &mut Context<Self>,
 3994    ) -> Option<Entity<Pane>> {
 3995        let item = pane.read(cx).active_item()?;
 3996        let maybe_pane_handle =
 3997            if let Some(clone) = item.clone_on_split(self.database_id(), window, cx) {
 3998                let new_pane = self.add_pane(window, cx);
 3999                new_pane.update(cx, |pane, cx| {
 4000                    pane.add_item(clone, true, true, None, window, cx)
 4001                });
 4002                self.center.split(&pane, &new_pane, direction).unwrap();
 4003                Some(new_pane)
 4004            } else {
 4005                None
 4006            };
 4007        cx.notify();
 4008        maybe_pane_handle
 4009    }
 4010
 4011    pub fn split_pane_with_item(
 4012        &mut self,
 4013        pane_to_split: WeakEntity<Pane>,
 4014        split_direction: SplitDirection,
 4015        from: WeakEntity<Pane>,
 4016        item_id_to_move: EntityId,
 4017        window: &mut Window,
 4018        cx: &mut Context<Self>,
 4019    ) {
 4020        let Some(pane_to_split) = pane_to_split.upgrade() else {
 4021            return;
 4022        };
 4023        let Some(from) = from.upgrade() else {
 4024            return;
 4025        };
 4026
 4027        let new_pane = self.add_pane(window, cx);
 4028        move_item(&from, &new_pane, item_id_to_move, 0, true, window, cx);
 4029        self.center
 4030            .split(&pane_to_split, &new_pane, split_direction)
 4031            .unwrap();
 4032        cx.notify();
 4033    }
 4034
 4035    pub fn split_pane_with_project_entry(
 4036        &mut self,
 4037        pane_to_split: WeakEntity<Pane>,
 4038        split_direction: SplitDirection,
 4039        project_entry: ProjectEntryId,
 4040        window: &mut Window,
 4041        cx: &mut Context<Self>,
 4042    ) -> Option<Task<Result<()>>> {
 4043        let pane_to_split = pane_to_split.upgrade()?;
 4044        let new_pane = self.add_pane(window, cx);
 4045        self.center
 4046            .split(&pane_to_split, &new_pane, split_direction)
 4047            .unwrap();
 4048
 4049        let path = self.project.read(cx).path_for_entry(project_entry, cx)?;
 4050        let task = self.open_path(path, Some(new_pane.downgrade()), true, window, cx);
 4051        Some(cx.foreground_executor().spawn(async move {
 4052            task.await?;
 4053            Ok(())
 4054        }))
 4055    }
 4056
 4057    pub fn join_all_panes(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4058        let active_item = self.active_pane.read(cx).active_item();
 4059        for pane in &self.panes {
 4060            join_pane_into_active(&self.active_pane, pane, window, cx);
 4061        }
 4062        if let Some(active_item) = active_item {
 4063            self.activate_item(active_item.as_ref(), true, true, window, cx);
 4064        }
 4065        cx.notify();
 4066    }
 4067
 4068    pub fn join_pane_into_next(
 4069        &mut self,
 4070        pane: Entity<Pane>,
 4071        window: &mut Window,
 4072        cx: &mut Context<Self>,
 4073    ) {
 4074        let next_pane = self
 4075            .find_pane_in_direction(SplitDirection::Right, cx)
 4076            .or_else(|| self.find_pane_in_direction(SplitDirection::Down, cx))
 4077            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4078            .or_else(|| self.find_pane_in_direction(SplitDirection::Up, cx));
 4079        let Some(next_pane) = next_pane else {
 4080            return;
 4081        };
 4082        move_all_items(&pane, &next_pane, window, cx);
 4083        cx.notify();
 4084    }
 4085
 4086    fn remove_pane(
 4087        &mut self,
 4088        pane: Entity<Pane>,
 4089        focus_on: Option<Entity<Pane>>,
 4090        window: &mut Window,
 4091        cx: &mut Context<Self>,
 4092    ) {
 4093        if self.center.remove(&pane).unwrap() {
 4094            self.force_remove_pane(&pane, &focus_on, window, cx);
 4095            self.unfollow_in_pane(&pane, window, cx);
 4096            self.last_leaders_by_pane.remove(&pane.downgrade());
 4097            for removed_item in pane.read(cx).items() {
 4098                self.panes_by_item.remove(&removed_item.item_id());
 4099            }
 4100
 4101            cx.notify();
 4102        } else {
 4103            self.active_item_path_changed(window, cx);
 4104        }
 4105        cx.emit(Event::PaneRemoved);
 4106    }
 4107
 4108    pub fn panes(&self) -> &[Entity<Pane>] {
 4109        &self.panes
 4110    }
 4111
 4112    pub fn active_pane(&self) -> &Entity<Pane> {
 4113        &self.active_pane
 4114    }
 4115
 4116    pub fn focused_pane(&self, window: &Window, cx: &App) -> Entity<Pane> {
 4117        for dock in self.all_docks() {
 4118            if dock.focus_handle(cx).contains_focused(window, cx) {
 4119                if let Some(pane) = dock
 4120                    .read(cx)
 4121                    .active_panel()
 4122                    .and_then(|panel| panel.pane(cx))
 4123                {
 4124                    return pane;
 4125                }
 4126            }
 4127        }
 4128        self.active_pane().clone()
 4129    }
 4130
 4131    pub fn adjacent_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 4132        self.find_pane_in_direction(SplitDirection::Right, cx)
 4133            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4134            .unwrap_or_else(|| {
 4135                self.split_pane(self.active_pane.clone(), SplitDirection::Right, window, cx)
 4136            })
 4137            .clone()
 4138    }
 4139
 4140    pub fn pane_for(&self, handle: &dyn ItemHandle) -> Option<Entity<Pane>> {
 4141        let weak_pane = self.panes_by_item.get(&handle.item_id())?;
 4142        weak_pane.upgrade()
 4143    }
 4144
 4145    fn collaborator_left(&mut self, peer_id: PeerId, window: &mut Window, cx: &mut Context<Self>) {
 4146        self.follower_states.retain(|leader_id, state| {
 4147            if *leader_id == CollaboratorId::PeerId(peer_id) {
 4148                for item in state.items_by_leader_view_id.values() {
 4149                    item.view.set_leader_id(None, window, cx);
 4150                }
 4151                false
 4152            } else {
 4153                true
 4154            }
 4155        });
 4156        cx.notify();
 4157    }
 4158
 4159    pub fn start_following(
 4160        &mut self,
 4161        leader_id: impl Into<CollaboratorId>,
 4162        window: &mut Window,
 4163        cx: &mut Context<Self>,
 4164    ) -> Option<Task<Result<()>>> {
 4165        let leader_id = leader_id.into();
 4166        let pane = self.active_pane().clone();
 4167
 4168        self.last_leaders_by_pane
 4169            .insert(pane.downgrade(), leader_id);
 4170        self.unfollow(leader_id, window, cx);
 4171        self.unfollow_in_pane(&pane, window, cx);
 4172        self.follower_states.insert(
 4173            leader_id,
 4174            FollowerState {
 4175                center_pane: pane.clone(),
 4176                dock_pane: None,
 4177                active_view_id: None,
 4178                items_by_leader_view_id: Default::default(),
 4179            },
 4180        );
 4181        cx.notify();
 4182
 4183        match leader_id {
 4184            CollaboratorId::PeerId(leader_peer_id) => {
 4185                let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4186                let project_id = self.project.read(cx).remote_id();
 4187                let request = self.app_state.client.request(proto::Follow {
 4188                    room_id,
 4189                    project_id,
 4190                    leader_id: Some(leader_peer_id),
 4191                });
 4192
 4193                Some(cx.spawn_in(window, async move |this, cx| {
 4194                    let response = request.await?;
 4195                    this.update(cx, |this, _| {
 4196                        let state = this
 4197                            .follower_states
 4198                            .get_mut(&leader_id)
 4199                            .context("following interrupted")?;
 4200                        state.active_view_id = response
 4201                            .active_view
 4202                            .as_ref()
 4203                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4204                        anyhow::Ok(())
 4205                    })??;
 4206                    if let Some(view) = response.active_view {
 4207                        Self::add_view_from_leader(this.clone(), leader_peer_id, &view, cx).await?;
 4208                    }
 4209                    this.update_in(cx, |this, window, cx| {
 4210                        this.leader_updated(leader_id, window, cx)
 4211                    })?;
 4212                    Ok(())
 4213                }))
 4214            }
 4215            CollaboratorId::Agent => {
 4216                self.leader_updated(leader_id, window, cx)?;
 4217                Some(Task::ready(Ok(())))
 4218            }
 4219        }
 4220    }
 4221
 4222    pub fn follow_next_collaborator(
 4223        &mut self,
 4224        _: &FollowNextCollaborator,
 4225        window: &mut Window,
 4226        cx: &mut Context<Self>,
 4227    ) {
 4228        let collaborators = self.project.read(cx).collaborators();
 4229        let next_leader_id = if let Some(leader_id) = self.leader_for_pane(&self.active_pane) {
 4230            let mut collaborators = collaborators.keys().copied();
 4231            for peer_id in collaborators.by_ref() {
 4232                if CollaboratorId::PeerId(peer_id) == leader_id {
 4233                    break;
 4234                }
 4235            }
 4236            collaborators.next().map(CollaboratorId::PeerId)
 4237        } else if let Some(last_leader_id) =
 4238            self.last_leaders_by_pane.get(&self.active_pane.downgrade())
 4239        {
 4240            match last_leader_id {
 4241                CollaboratorId::PeerId(peer_id) => {
 4242                    if collaborators.contains_key(peer_id) {
 4243                        Some(*last_leader_id)
 4244                    } else {
 4245                        None
 4246                    }
 4247                }
 4248                CollaboratorId::Agent => Some(CollaboratorId::Agent),
 4249            }
 4250        } else {
 4251            None
 4252        };
 4253
 4254        let pane = self.active_pane.clone();
 4255        let Some(leader_id) = next_leader_id.or_else(|| {
 4256            Some(CollaboratorId::PeerId(
 4257                collaborators.keys().copied().next()?,
 4258            ))
 4259        }) else {
 4260            return;
 4261        };
 4262        if self.unfollow_in_pane(&pane, window, cx) == Some(leader_id) {
 4263            return;
 4264        }
 4265        if let Some(task) = self.start_following(leader_id, window, cx) {
 4266            task.detach_and_log_err(cx)
 4267        }
 4268    }
 4269
 4270    pub fn follow(
 4271        &mut self,
 4272        leader_id: impl Into<CollaboratorId>,
 4273        window: &mut Window,
 4274        cx: &mut Context<Self>,
 4275    ) {
 4276        let leader_id = leader_id.into();
 4277
 4278        if let CollaboratorId::PeerId(peer_id) = leader_id {
 4279            let Some(room) = ActiveCall::global(cx).read(cx).room() else {
 4280                return;
 4281            };
 4282            let room = room.read(cx);
 4283            let Some(remote_participant) = room.remote_participant_for_peer_id(peer_id) else {
 4284                return;
 4285            };
 4286
 4287            let project = self.project.read(cx);
 4288
 4289            let other_project_id = match remote_participant.location {
 4290                call::ParticipantLocation::External => None,
 4291                call::ParticipantLocation::UnsharedProject => None,
 4292                call::ParticipantLocation::SharedProject { project_id } => {
 4293                    if Some(project_id) == project.remote_id() {
 4294                        None
 4295                    } else {
 4296                        Some(project_id)
 4297                    }
 4298                }
 4299            };
 4300
 4301            // if they are active in another project, follow there.
 4302            if let Some(project_id) = other_project_id {
 4303                let app_state = self.app_state.clone();
 4304                crate::join_in_room_project(project_id, remote_participant.user.id, app_state, cx)
 4305                    .detach_and_log_err(cx);
 4306            }
 4307        }
 4308
 4309        // if you're already following, find the right pane and focus it.
 4310        if let Some(follower_state) = self.follower_states.get(&leader_id) {
 4311            window.focus(&follower_state.pane().focus_handle(cx));
 4312
 4313            return;
 4314        }
 4315
 4316        // Otherwise, follow.
 4317        if let Some(task) = self.start_following(leader_id, window, cx) {
 4318            task.detach_and_log_err(cx)
 4319        }
 4320    }
 4321
 4322    pub fn unfollow(
 4323        &mut self,
 4324        leader_id: impl Into<CollaboratorId>,
 4325        window: &mut Window,
 4326        cx: &mut Context<Self>,
 4327    ) -> Option<()> {
 4328        cx.notify();
 4329
 4330        let leader_id = leader_id.into();
 4331        let state = self.follower_states.remove(&leader_id)?;
 4332        for (_, item) in state.items_by_leader_view_id {
 4333            item.view.set_leader_id(None, window, cx);
 4334        }
 4335
 4336        if let CollaboratorId::PeerId(leader_peer_id) = leader_id {
 4337            let project_id = self.project.read(cx).remote_id();
 4338            let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4339            self.app_state
 4340                .client
 4341                .send(proto::Unfollow {
 4342                    room_id,
 4343                    project_id,
 4344                    leader_id: Some(leader_peer_id),
 4345                })
 4346                .log_err();
 4347        }
 4348
 4349        Some(())
 4350    }
 4351
 4352    pub fn is_being_followed(&self, id: impl Into<CollaboratorId>) -> bool {
 4353        self.follower_states.contains_key(&id.into())
 4354    }
 4355
 4356    fn active_item_path_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4357        cx.emit(Event::ActiveItemChanged);
 4358        let active_entry = self.active_project_path(cx);
 4359        self.project
 4360            .update(cx, |project, cx| project.set_active_path(active_entry, cx));
 4361
 4362        self.update_window_title(window, cx);
 4363    }
 4364
 4365    fn update_window_title(&mut self, window: &mut Window, cx: &mut App) {
 4366        let project = self.project().read(cx);
 4367        let mut title = String::new();
 4368
 4369        for (i, name) in project.worktree_root_names(cx).enumerate() {
 4370            if i > 0 {
 4371                title.push_str(", ");
 4372            }
 4373            title.push_str(name);
 4374        }
 4375
 4376        if title.is_empty() {
 4377            title = "empty project".to_string();
 4378        }
 4379
 4380        if let Some(path) = self.active_item(cx).and_then(|item| item.project_path(cx)) {
 4381            let filename = path
 4382                .path
 4383                .file_name()
 4384                .map(|s| s.to_string_lossy())
 4385                .or_else(|| {
 4386                    Some(Cow::Borrowed(
 4387                        project
 4388                            .worktree_for_id(path.worktree_id, cx)?
 4389                            .read(cx)
 4390                            .root_name(),
 4391                    ))
 4392                });
 4393
 4394            if let Some(filename) = filename {
 4395                title.push_str("");
 4396                title.push_str(filename.as_ref());
 4397            }
 4398        }
 4399
 4400        if project.is_via_collab() {
 4401            title.push_str("");
 4402        } else if project.is_shared() {
 4403            title.push_str("");
 4404        }
 4405
 4406        window.set_window_title(&title);
 4407    }
 4408
 4409    fn update_window_edited(&mut self, window: &mut Window, cx: &mut App) {
 4410        let is_edited = !self.project.read(cx).is_disconnected(cx) && !self.dirty_items.is_empty();
 4411        if is_edited != self.window_edited {
 4412            self.window_edited = is_edited;
 4413            window.set_window_edited(self.window_edited)
 4414        }
 4415    }
 4416
 4417    fn update_item_dirty_state(
 4418        &mut self,
 4419        item: &dyn ItemHandle,
 4420        window: &mut Window,
 4421        cx: &mut App,
 4422    ) {
 4423        let is_dirty = item.is_dirty(cx);
 4424        let item_id = item.item_id();
 4425        let was_dirty = self.dirty_items.contains_key(&item_id);
 4426        if is_dirty == was_dirty {
 4427            return;
 4428        }
 4429        if was_dirty {
 4430            self.dirty_items.remove(&item_id);
 4431            self.update_window_edited(window, cx);
 4432            return;
 4433        }
 4434        if let Some(window_handle) = window.window_handle().downcast::<Self>() {
 4435            let s = item.on_release(
 4436                cx,
 4437                Box::new(move |cx| {
 4438                    window_handle
 4439                        .update(cx, |this, window, cx| {
 4440                            this.dirty_items.remove(&item_id);
 4441                            this.update_window_edited(window, cx)
 4442                        })
 4443                        .ok();
 4444                }),
 4445            );
 4446            self.dirty_items.insert(item_id, s);
 4447            self.update_window_edited(window, cx);
 4448        }
 4449    }
 4450
 4451    fn render_notifications(&self, _window: &mut Window, _cx: &mut Context<Self>) -> Option<Div> {
 4452        if self.notifications.is_empty() {
 4453            None
 4454        } else {
 4455            Some(
 4456                div()
 4457                    .absolute()
 4458                    .right_3()
 4459                    .bottom_3()
 4460                    .w_112()
 4461                    .h_full()
 4462                    .flex()
 4463                    .flex_col()
 4464                    .justify_end()
 4465                    .gap_2()
 4466                    .children(
 4467                        self.notifications
 4468                            .iter()
 4469                            .map(|(_, notification)| notification.clone().into_any()),
 4470                    ),
 4471            )
 4472        }
 4473    }
 4474
 4475    // RPC handlers
 4476
 4477    fn active_view_for_follower(
 4478        &self,
 4479        follower_project_id: Option<u64>,
 4480        window: &mut Window,
 4481        cx: &mut Context<Self>,
 4482    ) -> Option<proto::View> {
 4483        let (item, panel_id) = self.active_item_for_followers(window, cx);
 4484        let item = item?;
 4485        let leader_id = self
 4486            .pane_for(&*item)
 4487            .and_then(|pane| self.leader_for_pane(&pane));
 4488        let leader_peer_id = match leader_id {
 4489            Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4490            Some(CollaboratorId::Agent) | None => None,
 4491        };
 4492
 4493        let item_handle = item.to_followable_item_handle(cx)?;
 4494        let id = item_handle.remote_id(&self.app_state.client, window, cx)?;
 4495        let variant = item_handle.to_state_proto(window, cx)?;
 4496
 4497        if item_handle.is_project_item(window, cx)
 4498            && (follower_project_id.is_none()
 4499                || follower_project_id != self.project.read(cx).remote_id())
 4500        {
 4501            return None;
 4502        }
 4503
 4504        Some(proto::View {
 4505            id: id.to_proto(),
 4506            leader_id: leader_peer_id,
 4507            variant: Some(variant),
 4508            panel_id: panel_id.map(|id| id as i32),
 4509        })
 4510    }
 4511
 4512    fn handle_follow(
 4513        &mut self,
 4514        follower_project_id: Option<u64>,
 4515        window: &mut Window,
 4516        cx: &mut Context<Self>,
 4517    ) -> proto::FollowResponse {
 4518        let active_view = self.active_view_for_follower(follower_project_id, window, cx);
 4519
 4520        cx.notify();
 4521        proto::FollowResponse {
 4522            // TODO: Remove after version 0.145.x stabilizes.
 4523            active_view_id: active_view.as_ref().and_then(|view| view.id.clone()),
 4524            views: active_view.iter().cloned().collect(),
 4525            active_view,
 4526        }
 4527    }
 4528
 4529    fn handle_update_followers(
 4530        &mut self,
 4531        leader_id: PeerId,
 4532        message: proto::UpdateFollowers,
 4533        _window: &mut Window,
 4534        _cx: &mut Context<Self>,
 4535    ) {
 4536        self.leader_updates_tx
 4537            .unbounded_send((leader_id, message))
 4538            .ok();
 4539    }
 4540
 4541    async fn process_leader_update(
 4542        this: &WeakEntity<Self>,
 4543        leader_id: PeerId,
 4544        update: proto::UpdateFollowers,
 4545        cx: &mut AsyncWindowContext,
 4546    ) -> Result<()> {
 4547        match update.variant.context("invalid update")? {
 4548            proto::update_followers::Variant::CreateView(view) => {
 4549                let view_id = ViewId::from_proto(view.id.clone().context("invalid view id")?)?;
 4550                let should_add_view = this.update(cx, |this, _| {
 4551                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4552                        anyhow::Ok(!state.items_by_leader_view_id.contains_key(&view_id))
 4553                    } else {
 4554                        anyhow::Ok(false)
 4555                    }
 4556                })??;
 4557
 4558                if should_add_view {
 4559                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4560                }
 4561            }
 4562            proto::update_followers::Variant::UpdateActiveView(update_active_view) => {
 4563                let should_add_view = this.update(cx, |this, _| {
 4564                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4565                        state.active_view_id = update_active_view
 4566                            .view
 4567                            .as_ref()
 4568                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4569
 4570                        if state.active_view_id.is_some_and(|view_id| {
 4571                            !state.items_by_leader_view_id.contains_key(&view_id)
 4572                        }) {
 4573                            anyhow::Ok(true)
 4574                        } else {
 4575                            anyhow::Ok(false)
 4576                        }
 4577                    } else {
 4578                        anyhow::Ok(false)
 4579                    }
 4580                })??;
 4581
 4582                if should_add_view {
 4583                    if let Some(view) = update_active_view.view {
 4584                        Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4585                    }
 4586                }
 4587            }
 4588            proto::update_followers::Variant::UpdateView(update_view) => {
 4589                let variant = update_view.variant.context("missing update view variant")?;
 4590                let id = update_view.id.context("missing update view id")?;
 4591                let mut tasks = Vec::new();
 4592                this.update_in(cx, |this, window, cx| {
 4593                    let project = this.project.clone();
 4594                    if let Some(state) = this.follower_states.get(&leader_id.into()) {
 4595                        let view_id = ViewId::from_proto(id.clone())?;
 4596                        if let Some(item) = state.items_by_leader_view_id.get(&view_id) {
 4597                            tasks.push(item.view.apply_update_proto(
 4598                                &project,
 4599                                variant.clone(),
 4600                                window,
 4601                                cx,
 4602                            ));
 4603                        }
 4604                    }
 4605                    anyhow::Ok(())
 4606                })??;
 4607                try_join_all(tasks).await.log_err();
 4608            }
 4609        }
 4610        this.update_in(cx, |this, window, cx| {
 4611            this.leader_updated(leader_id, window, cx)
 4612        })?;
 4613        Ok(())
 4614    }
 4615
 4616    async fn add_view_from_leader(
 4617        this: WeakEntity<Self>,
 4618        leader_id: PeerId,
 4619        view: &proto::View,
 4620        cx: &mut AsyncWindowContext,
 4621    ) -> Result<()> {
 4622        let this = this.upgrade().context("workspace dropped")?;
 4623
 4624        let Some(id) = view.id.clone() else {
 4625            anyhow::bail!("no id for view");
 4626        };
 4627        let id = ViewId::from_proto(id)?;
 4628        let panel_id = view.panel_id.and_then(proto::PanelId::from_i32);
 4629
 4630        let pane = this.update(cx, |this, _cx| {
 4631            let state = this
 4632                .follower_states
 4633                .get(&leader_id.into())
 4634                .context("stopped following")?;
 4635            anyhow::Ok(state.pane().clone())
 4636        })??;
 4637        let existing_item = pane.update_in(cx, |pane, window, cx| {
 4638            let client = this.read(cx).client().clone();
 4639            pane.items().find_map(|item| {
 4640                let item = item.to_followable_item_handle(cx)?;
 4641                if item.remote_id(&client, window, cx) == Some(id) {
 4642                    Some(item)
 4643                } else {
 4644                    None
 4645                }
 4646            })
 4647        })?;
 4648        let item = if let Some(existing_item) = existing_item {
 4649            existing_item
 4650        } else {
 4651            let variant = view.variant.clone();
 4652            anyhow::ensure!(variant.is_some(), "missing view variant");
 4653
 4654            let task = cx.update(|window, cx| {
 4655                FollowableViewRegistry::from_state_proto(this.clone(), id, variant, window, cx)
 4656            })?;
 4657
 4658            let Some(task) = task else {
 4659                anyhow::bail!(
 4660                    "failed to construct view from leader (maybe from a different version of zed?)"
 4661                );
 4662            };
 4663
 4664            let mut new_item = task.await?;
 4665            pane.update_in(cx, |pane, window, cx| {
 4666                let mut item_to_remove = None;
 4667                for (ix, item) in pane.items().enumerate() {
 4668                    if let Some(item) = item.to_followable_item_handle(cx) {
 4669                        match new_item.dedup(item.as_ref(), window, cx) {
 4670                            Some(item::Dedup::KeepExisting) => {
 4671                                new_item =
 4672                                    item.boxed_clone().to_followable_item_handle(cx).unwrap();
 4673                                break;
 4674                            }
 4675                            Some(item::Dedup::ReplaceExisting) => {
 4676                                item_to_remove = Some((ix, item.item_id()));
 4677                                break;
 4678                            }
 4679                            None => {}
 4680                        }
 4681                    }
 4682                }
 4683
 4684                if let Some((ix, id)) = item_to_remove {
 4685                    pane.remove_item(id, false, false, window, cx);
 4686                    pane.add_item(new_item.boxed_clone(), false, false, Some(ix), window, cx);
 4687                }
 4688            })?;
 4689
 4690            new_item
 4691        };
 4692
 4693        this.update_in(cx, |this, window, cx| {
 4694            let state = this.follower_states.get_mut(&leader_id.into())?;
 4695            item.set_leader_id(Some(leader_id.into()), window, cx);
 4696            state.items_by_leader_view_id.insert(
 4697                id,
 4698                FollowerView {
 4699                    view: item,
 4700                    location: panel_id,
 4701                },
 4702            );
 4703
 4704            Some(())
 4705        })?;
 4706
 4707        Ok(())
 4708    }
 4709
 4710    fn handle_agent_location_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4711        let Some(follower_state) = self.follower_states.get_mut(&CollaboratorId::Agent) else {
 4712            return;
 4713        };
 4714
 4715        if let Some(agent_location) = self.project.read(cx).agent_location() {
 4716            let buffer_entity_id = agent_location.buffer.entity_id();
 4717            let view_id = ViewId {
 4718                creator: CollaboratorId::Agent,
 4719                id: buffer_entity_id.as_u64(),
 4720            };
 4721            follower_state.active_view_id = Some(view_id);
 4722
 4723            let item = match follower_state.items_by_leader_view_id.entry(view_id) {
 4724                hash_map::Entry::Occupied(entry) => Some(entry.into_mut()),
 4725                hash_map::Entry::Vacant(entry) => {
 4726                    let existing_view =
 4727                        follower_state
 4728                            .center_pane
 4729                            .read(cx)
 4730                            .items()
 4731                            .find_map(|item| {
 4732                                let item = item.to_followable_item_handle(cx)?;
 4733                                if item.is_singleton(cx)
 4734                                    && item.project_item_model_ids(cx).as_slice()
 4735                                        == [buffer_entity_id]
 4736                                {
 4737                                    Some(item)
 4738                                } else {
 4739                                    None
 4740                                }
 4741                            });
 4742                    let view = existing_view.or_else(|| {
 4743                        agent_location.buffer.upgrade().and_then(|buffer| {
 4744                            cx.update_default_global(|registry: &mut ProjectItemRegistry, cx| {
 4745                                registry.build_item(buffer, self.project.clone(), None, window, cx)
 4746                            })?
 4747                            .to_followable_item_handle(cx)
 4748                        })
 4749                    });
 4750
 4751                    if let Some(view) = view {
 4752                        Some(entry.insert(FollowerView {
 4753                            view,
 4754                            location: None,
 4755                        }))
 4756                    } else {
 4757                        None
 4758                    }
 4759                }
 4760            };
 4761
 4762            if let Some(item) = item {
 4763                item.view
 4764                    .set_leader_id(Some(CollaboratorId::Agent), window, cx);
 4765                item.view
 4766                    .update_agent_location(agent_location.position, window, cx);
 4767            }
 4768        } else {
 4769            follower_state.active_view_id = None;
 4770        }
 4771
 4772        self.leader_updated(CollaboratorId::Agent, window, cx);
 4773    }
 4774
 4775    pub fn update_active_view_for_followers(&mut self, window: &mut Window, cx: &mut App) {
 4776        let mut is_project_item = true;
 4777        let mut update = proto::UpdateActiveView::default();
 4778        if window.is_window_active() {
 4779            let (active_item, panel_id) = self.active_item_for_followers(window, cx);
 4780
 4781            if let Some(item) = active_item {
 4782                if item.item_focus_handle(cx).contains_focused(window, cx) {
 4783                    let leader_id = self
 4784                        .pane_for(&*item)
 4785                        .and_then(|pane| self.leader_for_pane(&pane));
 4786                    let leader_peer_id = match leader_id {
 4787                        Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4788                        Some(CollaboratorId::Agent) | None => None,
 4789                    };
 4790
 4791                    if let Some(item) = item.to_followable_item_handle(cx) {
 4792                        let id = item
 4793                            .remote_id(&self.app_state.client, window, cx)
 4794                            .map(|id| id.to_proto());
 4795
 4796                        if let Some(id) = id.clone() {
 4797                            if let Some(variant) = item.to_state_proto(window, cx) {
 4798                                let view = Some(proto::View {
 4799                                    id: id.clone(),
 4800                                    leader_id: leader_peer_id,
 4801                                    variant: Some(variant),
 4802                                    panel_id: panel_id.map(|id| id as i32),
 4803                                });
 4804
 4805                                is_project_item = item.is_project_item(window, cx);
 4806                                update = proto::UpdateActiveView {
 4807                                    view,
 4808                                    // TODO: Remove after version 0.145.x stabilizes.
 4809                                    id: id.clone(),
 4810                                    leader_id: leader_peer_id,
 4811                                };
 4812                            }
 4813                        };
 4814                    }
 4815                }
 4816            }
 4817        }
 4818
 4819        let active_view_id = update.view.as_ref().and_then(|view| view.id.as_ref());
 4820        if active_view_id != self.last_active_view_id.as_ref() {
 4821            self.last_active_view_id = active_view_id.cloned();
 4822            self.update_followers(
 4823                is_project_item,
 4824                proto::update_followers::Variant::UpdateActiveView(update),
 4825                window,
 4826                cx,
 4827            );
 4828        }
 4829    }
 4830
 4831    fn active_item_for_followers(
 4832        &self,
 4833        window: &mut Window,
 4834        cx: &mut App,
 4835    ) -> (Option<Box<dyn ItemHandle>>, Option<proto::PanelId>) {
 4836        let mut active_item = None;
 4837        let mut panel_id = None;
 4838        for dock in self.all_docks() {
 4839            if dock.focus_handle(cx).contains_focused(window, cx) {
 4840                if let Some(panel) = dock.read(cx).active_panel() {
 4841                    if let Some(pane) = panel.pane(cx) {
 4842                        if let Some(item) = pane.read(cx).active_item() {
 4843                            active_item = Some(item);
 4844                            panel_id = panel.remote_id();
 4845                            break;
 4846                        }
 4847                    }
 4848                }
 4849            }
 4850        }
 4851
 4852        if active_item.is_none() {
 4853            active_item = self.active_pane().read(cx).active_item();
 4854        }
 4855        (active_item, panel_id)
 4856    }
 4857
 4858    fn update_followers(
 4859        &self,
 4860        project_only: bool,
 4861        update: proto::update_followers::Variant,
 4862        _: &mut Window,
 4863        cx: &mut App,
 4864    ) -> Option<()> {
 4865        // If this update only applies to for followers in the current project,
 4866        // then skip it unless this project is shared. If it applies to all
 4867        // followers, regardless of project, then set `project_id` to none,
 4868        // indicating that it goes to all followers.
 4869        let project_id = if project_only {
 4870            Some(self.project.read(cx).remote_id()?)
 4871        } else {
 4872            None
 4873        };
 4874        self.app_state().workspace_store.update(cx, |store, cx| {
 4875            store.update_followers(project_id, update, cx)
 4876        })
 4877    }
 4878
 4879    pub fn leader_for_pane(&self, pane: &Entity<Pane>) -> Option<CollaboratorId> {
 4880        self.follower_states.iter().find_map(|(leader_id, state)| {
 4881            if state.center_pane == *pane || state.dock_pane.as_ref() == Some(pane) {
 4882                Some(*leader_id)
 4883            } else {
 4884                None
 4885            }
 4886        })
 4887    }
 4888
 4889    fn leader_updated(
 4890        &mut self,
 4891        leader_id: impl Into<CollaboratorId>,
 4892        window: &mut Window,
 4893        cx: &mut Context<Self>,
 4894    ) -> Option<Box<dyn ItemHandle>> {
 4895        cx.notify();
 4896
 4897        let leader_id = leader_id.into();
 4898        let (panel_id, item) = match leader_id {
 4899            CollaboratorId::PeerId(peer_id) => self.active_item_for_peer(peer_id, window, cx)?,
 4900            CollaboratorId::Agent => (None, self.active_item_for_agent()?),
 4901        };
 4902
 4903        let state = self.follower_states.get(&leader_id)?;
 4904        let mut transfer_focus = state.center_pane.read(cx).has_focus(window, cx);
 4905        let pane;
 4906        if let Some(panel_id) = panel_id {
 4907            pane = self
 4908                .activate_panel_for_proto_id(panel_id, window, cx)?
 4909                .pane(cx)?;
 4910            let state = self.follower_states.get_mut(&leader_id)?;
 4911            state.dock_pane = Some(pane.clone());
 4912        } else {
 4913            pane = state.center_pane.clone();
 4914            let state = self.follower_states.get_mut(&leader_id)?;
 4915            if let Some(dock_pane) = state.dock_pane.take() {
 4916                transfer_focus |= dock_pane.focus_handle(cx).contains_focused(window, cx);
 4917            }
 4918        }
 4919
 4920        pane.update(cx, |pane, cx| {
 4921            let focus_active_item = pane.has_focus(window, cx) || transfer_focus;
 4922            if let Some(index) = pane.index_for_item(item.as_ref()) {
 4923                pane.activate_item(index, false, false, window, cx);
 4924            } else {
 4925                pane.add_item(item.boxed_clone(), false, false, None, window, cx)
 4926            }
 4927
 4928            if focus_active_item {
 4929                pane.focus_active_item(window, cx)
 4930            }
 4931        });
 4932
 4933        Some(item)
 4934    }
 4935
 4936    fn active_item_for_agent(&self) -> Option<Box<dyn ItemHandle>> {
 4937        let state = self.follower_states.get(&CollaboratorId::Agent)?;
 4938        let active_view_id = state.active_view_id?;
 4939        Some(
 4940            state
 4941                .items_by_leader_view_id
 4942                .get(&active_view_id)?
 4943                .view
 4944                .boxed_clone(),
 4945        )
 4946    }
 4947
 4948    fn active_item_for_peer(
 4949        &self,
 4950        peer_id: PeerId,
 4951        window: &mut Window,
 4952        cx: &mut Context<Self>,
 4953    ) -> Option<(Option<PanelId>, Box<dyn ItemHandle>)> {
 4954        let call = self.active_call()?;
 4955        let room = call.read(cx).room()?.read(cx);
 4956        let participant = room.remote_participant_for_peer_id(peer_id)?;
 4957        let leader_in_this_app;
 4958        let leader_in_this_project;
 4959        match participant.location {
 4960            call::ParticipantLocation::SharedProject { project_id } => {
 4961                leader_in_this_app = true;
 4962                leader_in_this_project = Some(project_id) == self.project.read(cx).remote_id();
 4963            }
 4964            call::ParticipantLocation::UnsharedProject => {
 4965                leader_in_this_app = true;
 4966                leader_in_this_project = false;
 4967            }
 4968            call::ParticipantLocation::External => {
 4969                leader_in_this_app = false;
 4970                leader_in_this_project = false;
 4971            }
 4972        };
 4973        let state = self.follower_states.get(&peer_id.into())?;
 4974        let mut item_to_activate = None;
 4975        if let (Some(active_view_id), true) = (state.active_view_id, leader_in_this_app) {
 4976            if let Some(item) = state.items_by_leader_view_id.get(&active_view_id) {
 4977                if leader_in_this_project || !item.view.is_project_item(window, cx) {
 4978                    item_to_activate = Some((item.location, item.view.boxed_clone()));
 4979                }
 4980            }
 4981        } else if let Some(shared_screen) =
 4982            self.shared_screen_for_peer(peer_id, &state.center_pane, window, cx)
 4983        {
 4984            item_to_activate = Some((None, Box::new(shared_screen)));
 4985        }
 4986        item_to_activate
 4987    }
 4988
 4989    fn shared_screen_for_peer(
 4990        &self,
 4991        peer_id: PeerId,
 4992        pane: &Entity<Pane>,
 4993        window: &mut Window,
 4994        cx: &mut App,
 4995    ) -> Option<Entity<SharedScreen>> {
 4996        let call = self.active_call()?;
 4997        let room = call.read(cx).room()?.clone();
 4998        let participant = room.read(cx).remote_participant_for_peer_id(peer_id)?;
 4999        let track = participant.video_tracks.values().next()?.clone();
 5000        let user = participant.user.clone();
 5001
 5002        for item in pane.read(cx).items_of_type::<SharedScreen>() {
 5003            if item.read(cx).peer_id == peer_id {
 5004                return Some(item);
 5005            }
 5006        }
 5007
 5008        Some(cx.new(|cx| SharedScreen::new(track, peer_id, user.clone(), room.clone(), window, cx)))
 5009    }
 5010
 5011    pub fn on_window_activation_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5012        if window.is_window_active() {
 5013            self.update_active_view_for_followers(window, cx);
 5014
 5015            if let Some(database_id) = self.database_id {
 5016                cx.background_spawn(persistence::DB.update_timestamp(database_id))
 5017                    .detach();
 5018            }
 5019        } else {
 5020            for pane in &self.panes {
 5021                pane.update(cx, |pane, cx| {
 5022                    if let Some(item) = pane.active_item() {
 5023                        item.workspace_deactivated(window, cx);
 5024                    }
 5025                    for item in pane.items() {
 5026                        if matches!(
 5027                            item.workspace_settings(cx).autosave,
 5028                            AutosaveSetting::OnWindowChange | AutosaveSetting::OnFocusChange
 5029                        ) {
 5030                            Pane::autosave_item(item.as_ref(), self.project.clone(), window, cx)
 5031                                .detach_and_log_err(cx);
 5032                        }
 5033                    }
 5034                });
 5035            }
 5036        }
 5037    }
 5038
 5039    pub fn active_call(&self) -> Option<&Entity<ActiveCall>> {
 5040        self.active_call.as_ref().map(|(call, _)| call)
 5041    }
 5042
 5043    fn on_active_call_event(
 5044        &mut self,
 5045        _: &Entity<ActiveCall>,
 5046        event: &call::room::Event,
 5047        window: &mut Window,
 5048        cx: &mut Context<Self>,
 5049    ) {
 5050        match event {
 5051            call::room::Event::ParticipantLocationChanged { participant_id }
 5052            | call::room::Event::RemoteVideoTracksChanged { participant_id } => {
 5053                self.leader_updated(participant_id, window, cx);
 5054            }
 5055            _ => {}
 5056        }
 5057    }
 5058
 5059    pub fn database_id(&self) -> Option<WorkspaceId> {
 5060        self.database_id
 5061    }
 5062
 5063    pub fn session_id(&self) -> Option<String> {
 5064        self.session_id.clone()
 5065    }
 5066
 5067    fn local_paths(&self, cx: &App) -> Option<Vec<Arc<Path>>> {
 5068        let project = self.project().read(cx);
 5069
 5070        if project.is_local() {
 5071            Some(
 5072                project
 5073                    .visible_worktrees(cx)
 5074                    .map(|worktree| worktree.read(cx).abs_path())
 5075                    .collect::<Vec<_>>(),
 5076            )
 5077        } else {
 5078            None
 5079        }
 5080    }
 5081
 5082    fn remove_panes(&mut self, member: Member, window: &mut Window, cx: &mut Context<Workspace>) {
 5083        match member {
 5084            Member::Axis(PaneAxis { members, .. }) => {
 5085                for child in members.iter() {
 5086                    self.remove_panes(child.clone(), window, cx)
 5087                }
 5088            }
 5089            Member::Pane(pane) => {
 5090                self.force_remove_pane(&pane, &None, window, cx);
 5091            }
 5092        }
 5093    }
 5094
 5095    fn remove_from_session(&mut self, window: &mut Window, cx: &mut App) -> Task<()> {
 5096        self.session_id.take();
 5097        self.serialize_workspace_internal(window, cx)
 5098    }
 5099
 5100    fn force_remove_pane(
 5101        &mut self,
 5102        pane: &Entity<Pane>,
 5103        focus_on: &Option<Entity<Pane>>,
 5104        window: &mut Window,
 5105        cx: &mut Context<Workspace>,
 5106    ) {
 5107        self.panes.retain(|p| p != pane);
 5108        if let Some(focus_on) = focus_on {
 5109            focus_on.update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5110        } else {
 5111            if self.active_pane() == pane {
 5112                self.panes
 5113                    .last()
 5114                    .unwrap()
 5115                    .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5116            }
 5117        }
 5118        if self.last_active_center_pane == Some(pane.downgrade()) {
 5119            self.last_active_center_pane = None;
 5120        }
 5121        cx.notify();
 5122    }
 5123
 5124    fn serialize_workspace(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5125        if self._schedule_serialize.is_none() {
 5126            self._schedule_serialize = Some(cx.spawn_in(window, async move |this, cx| {
 5127                cx.background_executor()
 5128                    .timer(Duration::from_millis(100))
 5129                    .await;
 5130                this.update_in(cx, |this, window, cx| {
 5131                    this.serialize_workspace_internal(window, cx).detach();
 5132                    this._schedule_serialize.take();
 5133                })
 5134                .log_err();
 5135            }));
 5136        }
 5137    }
 5138
 5139    fn serialize_workspace_internal(&self, window: &mut Window, cx: &mut App) -> Task<()> {
 5140        let Some(database_id) = self.database_id() else {
 5141            return Task::ready(());
 5142        };
 5143
 5144        fn serialize_pane_handle(
 5145            pane_handle: &Entity<Pane>,
 5146            window: &mut Window,
 5147            cx: &mut App,
 5148        ) -> SerializedPane {
 5149            let (items, active, pinned_count) = {
 5150                let pane = pane_handle.read(cx);
 5151                let active_item_id = pane.active_item().map(|item| item.item_id());
 5152                (
 5153                    pane.items()
 5154                        .filter_map(|handle| {
 5155                            let handle = handle.to_serializable_item_handle(cx)?;
 5156
 5157                            Some(SerializedItem {
 5158                                kind: Arc::from(handle.serialized_item_kind()),
 5159                                item_id: handle.item_id().as_u64(),
 5160                                active: Some(handle.item_id()) == active_item_id,
 5161                                preview: pane.is_active_preview_item(handle.item_id()),
 5162                            })
 5163                        })
 5164                        .collect::<Vec<_>>(),
 5165                    pane.has_focus(window, cx),
 5166                    pane.pinned_count(),
 5167                )
 5168            };
 5169
 5170            SerializedPane::new(items, active, pinned_count)
 5171        }
 5172
 5173        fn build_serialized_pane_group(
 5174            pane_group: &Member,
 5175            window: &mut Window,
 5176            cx: &mut App,
 5177        ) -> SerializedPaneGroup {
 5178            match pane_group {
 5179                Member::Axis(PaneAxis {
 5180                    axis,
 5181                    members,
 5182                    flexes,
 5183                    bounding_boxes: _,
 5184                }) => SerializedPaneGroup::Group {
 5185                    axis: SerializedAxis(*axis),
 5186                    children: members
 5187                        .iter()
 5188                        .map(|member| build_serialized_pane_group(member, window, cx))
 5189                        .collect::<Vec<_>>(),
 5190                    flexes: Some(flexes.lock().clone()),
 5191                },
 5192                Member::Pane(pane_handle) => {
 5193                    SerializedPaneGroup::Pane(serialize_pane_handle(pane_handle, window, cx))
 5194                }
 5195            }
 5196        }
 5197
 5198        fn build_serialized_docks(
 5199            this: &Workspace,
 5200            window: &mut Window,
 5201            cx: &mut App,
 5202        ) -> DockStructure {
 5203            let left_dock = this.left_dock.read(cx);
 5204            let left_visible = left_dock.is_open();
 5205            let left_active_panel = left_dock
 5206                .active_panel()
 5207                .map(|panel| panel.persistent_name().to_string());
 5208            let left_dock_zoom = left_dock
 5209                .active_panel()
 5210                .map(|panel| panel.is_zoomed(window, cx))
 5211                .unwrap_or(false);
 5212
 5213            let right_dock = this.right_dock.read(cx);
 5214            let right_visible = right_dock.is_open();
 5215            let right_active_panel = right_dock
 5216                .active_panel()
 5217                .map(|panel| panel.persistent_name().to_string());
 5218            let right_dock_zoom = right_dock
 5219                .active_panel()
 5220                .map(|panel| panel.is_zoomed(window, cx))
 5221                .unwrap_or(false);
 5222
 5223            let bottom_dock = this.bottom_dock.read(cx);
 5224            let bottom_visible = bottom_dock.is_open();
 5225            let bottom_active_panel = bottom_dock
 5226                .active_panel()
 5227                .map(|panel| panel.persistent_name().to_string());
 5228            let bottom_dock_zoom = bottom_dock
 5229                .active_panel()
 5230                .map(|panel| panel.is_zoomed(window, cx))
 5231                .unwrap_or(false);
 5232
 5233            DockStructure {
 5234                left: DockData {
 5235                    visible: left_visible,
 5236                    active_panel: left_active_panel,
 5237                    zoom: left_dock_zoom,
 5238                },
 5239                right: DockData {
 5240                    visible: right_visible,
 5241                    active_panel: right_active_panel,
 5242                    zoom: right_dock_zoom,
 5243                },
 5244                bottom: DockData {
 5245                    visible: bottom_visible,
 5246                    active_panel: bottom_active_panel,
 5247                    zoom: bottom_dock_zoom,
 5248                },
 5249            }
 5250        }
 5251
 5252        match self.serialize_workspace_location(cx) {
 5253            WorkspaceLocation::Location(location) => {
 5254                let breakpoints = self.project.update(cx, |project, cx| {
 5255                    project
 5256                        .breakpoint_store()
 5257                        .read(cx)
 5258                        .all_source_breakpoints(cx)
 5259                });
 5260
 5261                let center_group = build_serialized_pane_group(&self.center.root, window, cx);
 5262                let docks = build_serialized_docks(self, window, cx);
 5263                let window_bounds = Some(SerializedWindowBounds(window.window_bounds()));
 5264                let serialized_workspace = SerializedWorkspace {
 5265                    id: database_id,
 5266                    location,
 5267                    center_group,
 5268                    window_bounds,
 5269                    display: Default::default(),
 5270                    docks,
 5271                    centered_layout: self.centered_layout,
 5272                    session_id: self.session_id.clone(),
 5273                    breakpoints,
 5274                    window_id: Some(window.window_handle().window_id().as_u64()),
 5275                };
 5276
 5277                window.spawn(cx, async move |_| {
 5278                    persistence::DB.save_workspace(serialized_workspace).await;
 5279                })
 5280            }
 5281            WorkspaceLocation::DetachFromSession => window.spawn(cx, async move |_| {
 5282                persistence::DB
 5283                    .set_session_id(database_id, None)
 5284                    .await
 5285                    .log_err();
 5286            }),
 5287            WorkspaceLocation::None => Task::ready(()),
 5288        }
 5289    }
 5290
 5291    fn serialize_workspace_location(&self, cx: &App) -> WorkspaceLocation {
 5292        if let Some(ssh_project) = &self.serialized_ssh_project {
 5293            WorkspaceLocation::Location(SerializedWorkspaceLocation::Ssh(ssh_project.clone()))
 5294        } else if let Some(local_paths) = self.local_paths(cx) {
 5295            if !local_paths.is_empty() {
 5296                WorkspaceLocation::Location(SerializedWorkspaceLocation::from_local_paths(
 5297                    local_paths,
 5298                ))
 5299            } else {
 5300                WorkspaceLocation::DetachFromSession
 5301            }
 5302        } else {
 5303            WorkspaceLocation::None
 5304        }
 5305    }
 5306
 5307    fn update_history(&self, cx: &mut App) {
 5308        let Some(id) = self.database_id() else {
 5309            return;
 5310        };
 5311        let location = match self.serialize_workspace_location(cx) {
 5312            WorkspaceLocation::Location(location) => location,
 5313            _ => return,
 5314        };
 5315        if let Some(manager) = HistoryManager::global(cx) {
 5316            manager.update(cx, |this, cx| {
 5317                this.update_history(id, HistoryManagerEntry::new(id, &location), cx);
 5318            });
 5319        }
 5320    }
 5321
 5322    async fn serialize_items(
 5323        this: &WeakEntity<Self>,
 5324        items_rx: UnboundedReceiver<Box<dyn SerializableItemHandle>>,
 5325        cx: &mut AsyncWindowContext,
 5326    ) -> Result<()> {
 5327        const CHUNK_SIZE: usize = 200;
 5328
 5329        let mut serializable_items = items_rx.ready_chunks(CHUNK_SIZE);
 5330
 5331        while let Some(items_received) = serializable_items.next().await {
 5332            let unique_items =
 5333                items_received
 5334                    .into_iter()
 5335                    .fold(HashMap::default(), |mut acc, item| {
 5336                        acc.entry(item.item_id()).or_insert(item);
 5337                        acc
 5338                    });
 5339
 5340            // We use into_iter() here so that the references to the items are moved into
 5341            // the tasks and not kept alive while we're sleeping.
 5342            for (_, item) in unique_items.into_iter() {
 5343                if let Ok(Some(task)) = this.update_in(cx, |workspace, window, cx| {
 5344                    item.serialize(workspace, false, window, cx)
 5345                }) {
 5346                    cx.background_spawn(async move { task.await.log_err() })
 5347                        .detach();
 5348                }
 5349            }
 5350
 5351            cx.background_executor()
 5352                .timer(SERIALIZATION_THROTTLE_TIME)
 5353                .await;
 5354        }
 5355
 5356        Ok(())
 5357    }
 5358
 5359    pub(crate) fn enqueue_item_serialization(
 5360        &mut self,
 5361        item: Box<dyn SerializableItemHandle>,
 5362    ) -> Result<()> {
 5363        self.serializable_items_tx
 5364            .unbounded_send(item)
 5365            .map_err(|err| anyhow!("failed to send serializable item over channel: {err}"))
 5366    }
 5367
 5368    pub(crate) fn load_workspace(
 5369        serialized_workspace: SerializedWorkspace,
 5370        paths_to_open: Vec<Option<ProjectPath>>,
 5371        window: &mut Window,
 5372        cx: &mut Context<Workspace>,
 5373    ) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 5374        cx.spawn_in(window, async move |workspace, cx| {
 5375            let project = workspace.read_with(cx, |workspace, _| workspace.project().clone())?;
 5376
 5377            let mut center_group = None;
 5378            let mut center_items = None;
 5379
 5380            // Traverse the splits tree and add to things
 5381            if let Some((group, active_pane, items)) = serialized_workspace
 5382                .center_group
 5383                .deserialize(&project, serialized_workspace.id, workspace.clone(), cx)
 5384                .await
 5385            {
 5386                center_items = Some(items);
 5387                center_group = Some((group, active_pane))
 5388            }
 5389
 5390            let mut items_by_project_path = HashMap::default();
 5391            let mut item_ids_by_kind = HashMap::default();
 5392            let mut all_deserialized_items = Vec::default();
 5393            cx.update(|_, cx| {
 5394                for item in center_items.unwrap_or_default().into_iter().flatten() {
 5395                    if let Some(serializable_item_handle) = item.to_serializable_item_handle(cx) {
 5396                        item_ids_by_kind
 5397                            .entry(serializable_item_handle.serialized_item_kind())
 5398                            .or_insert(Vec::new())
 5399                            .push(item.item_id().as_u64() as ItemId);
 5400                    }
 5401
 5402                    if let Some(project_path) = item.project_path(cx) {
 5403                        items_by_project_path.insert(project_path, item.clone());
 5404                    }
 5405                    all_deserialized_items.push(item);
 5406                }
 5407            })?;
 5408
 5409            let opened_items = paths_to_open
 5410                .into_iter()
 5411                .map(|path_to_open| {
 5412                    path_to_open
 5413                        .and_then(|path_to_open| items_by_project_path.remove(&path_to_open))
 5414                })
 5415                .collect::<Vec<_>>();
 5416
 5417            // Remove old panes from workspace panes list
 5418            workspace.update_in(cx, |workspace, window, cx| {
 5419                if let Some((center_group, active_pane)) = center_group {
 5420                    workspace.remove_panes(workspace.center.root.clone(), window, cx);
 5421
 5422                    // Swap workspace center group
 5423                    workspace.center = PaneGroup::with_root(center_group);
 5424                    if let Some(active_pane) = active_pane {
 5425                        workspace.set_active_pane(&active_pane, window, cx);
 5426                        cx.focus_self(window);
 5427                    } else {
 5428                        workspace.set_active_pane(&workspace.center.first_pane(), window, cx);
 5429                    }
 5430                }
 5431
 5432                let docks = serialized_workspace.docks;
 5433
 5434                for (dock, serialized_dock) in [
 5435                    (&mut workspace.right_dock, docks.right),
 5436                    (&mut workspace.left_dock, docks.left),
 5437                    (&mut workspace.bottom_dock, docks.bottom),
 5438                ]
 5439                .iter_mut()
 5440                {
 5441                    dock.update(cx, |dock, cx| {
 5442                        dock.serialized_dock = Some(serialized_dock.clone());
 5443                        dock.restore_state(window, cx);
 5444                    });
 5445                }
 5446
 5447                cx.notify();
 5448            })?;
 5449
 5450            let _ = project
 5451                .update(cx, |project, cx| {
 5452                    project
 5453                        .breakpoint_store()
 5454                        .update(cx, |breakpoint_store, cx| {
 5455                            breakpoint_store
 5456                                .with_serialized_breakpoints(serialized_workspace.breakpoints, cx)
 5457                        })
 5458                })?
 5459                .await;
 5460
 5461            // Clean up all the items that have _not_ been loaded. Our ItemIds aren't stable. That means
 5462            // after loading the items, we might have different items and in order to avoid
 5463            // the database filling up, we delete items that haven't been loaded now.
 5464            //
 5465            // The items that have been loaded, have been saved after they've been added to the workspace.
 5466            let clean_up_tasks = workspace.update_in(cx, |_, window, cx| {
 5467                item_ids_by_kind
 5468                    .into_iter()
 5469                    .map(|(item_kind, loaded_items)| {
 5470                        SerializableItemRegistry::cleanup(
 5471                            item_kind,
 5472                            serialized_workspace.id,
 5473                            loaded_items,
 5474                            window,
 5475                            cx,
 5476                        )
 5477                        .log_err()
 5478                    })
 5479                    .collect::<Vec<_>>()
 5480            })?;
 5481
 5482            futures::future::join_all(clean_up_tasks).await;
 5483
 5484            workspace
 5485                .update_in(cx, |workspace, window, cx| {
 5486                    // Serialize ourself to make sure our timestamps and any pane / item changes are replicated
 5487                    workspace.serialize_workspace_internal(window, cx).detach();
 5488
 5489                    // Ensure that we mark the window as edited if we did load dirty items
 5490                    workspace.update_window_edited(window, cx);
 5491                })
 5492                .ok();
 5493
 5494            Ok(opened_items)
 5495        })
 5496    }
 5497
 5498    fn actions(&self, div: Div, window: &mut Window, cx: &mut Context<Self>) -> Div {
 5499        self.add_workspace_actions_listeners(div, window, cx)
 5500            .on_action(cx.listener(Self::close_inactive_items_and_panes))
 5501            .on_action(cx.listener(Self::close_all_items_and_panes))
 5502            .on_action(cx.listener(Self::save_all))
 5503            .on_action(cx.listener(Self::send_keystrokes))
 5504            .on_action(cx.listener(Self::add_folder_to_project))
 5505            .on_action(cx.listener(Self::follow_next_collaborator))
 5506            .on_action(cx.listener(Self::close_window))
 5507            .on_action(cx.listener(Self::activate_pane_at_index))
 5508            .on_action(cx.listener(Self::move_item_to_pane_at_index))
 5509            .on_action(cx.listener(Self::move_focused_panel_to_next_position))
 5510            .on_action(cx.listener(|workspace, _: &Unfollow, window, cx| {
 5511                let pane = workspace.active_pane().clone();
 5512                workspace.unfollow_in_pane(&pane, window, cx);
 5513            }))
 5514            .on_action(cx.listener(|workspace, action: &Save, window, cx| {
 5515                workspace
 5516                    .save_active_item(action.save_intent.unwrap_or(SaveIntent::Save), window, cx)
 5517                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5518            }))
 5519            .on_action(cx.listener(|workspace, _: &SaveWithoutFormat, window, cx| {
 5520                workspace
 5521                    .save_active_item(SaveIntent::SaveWithoutFormat, window, cx)
 5522                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5523            }))
 5524            .on_action(cx.listener(|workspace, _: &SaveAs, window, cx| {
 5525                workspace
 5526                    .save_active_item(SaveIntent::SaveAs, window, cx)
 5527                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5528            }))
 5529            .on_action(
 5530                cx.listener(|workspace, _: &ActivatePreviousPane, window, cx| {
 5531                    workspace.activate_previous_pane(window, cx)
 5532                }),
 5533            )
 5534            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5535                workspace.activate_next_pane(window, cx)
 5536            }))
 5537            .on_action(
 5538                cx.listener(|workspace, _: &ActivateNextWindow, _window, cx| {
 5539                    workspace.activate_next_window(cx)
 5540                }),
 5541            )
 5542            .on_action(
 5543                cx.listener(|workspace, _: &ActivatePreviousWindow, _window, cx| {
 5544                    workspace.activate_previous_window(cx)
 5545                }),
 5546            )
 5547            .on_action(cx.listener(|workspace, _: &ActivatePaneLeft, window, cx| {
 5548                workspace.activate_pane_in_direction(SplitDirection::Left, window, cx)
 5549            }))
 5550            .on_action(cx.listener(|workspace, _: &ActivatePaneRight, window, cx| {
 5551                workspace.activate_pane_in_direction(SplitDirection::Right, window, cx)
 5552            }))
 5553            .on_action(cx.listener(|workspace, _: &ActivatePaneUp, window, cx| {
 5554                workspace.activate_pane_in_direction(SplitDirection::Up, window, cx)
 5555            }))
 5556            .on_action(cx.listener(|workspace, _: &ActivatePaneDown, window, cx| {
 5557                workspace.activate_pane_in_direction(SplitDirection::Down, window, cx)
 5558            }))
 5559            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5560                workspace.activate_next_pane(window, cx)
 5561            }))
 5562            .on_action(cx.listener(
 5563                |workspace, action: &MoveItemToPaneInDirection, window, cx| {
 5564                    workspace.move_item_to_pane_in_direction(action, window, cx)
 5565                },
 5566            ))
 5567            .on_action(cx.listener(|workspace, _: &SwapPaneLeft, _, cx| {
 5568                workspace.swap_pane_in_direction(SplitDirection::Left, cx)
 5569            }))
 5570            .on_action(cx.listener(|workspace, _: &SwapPaneRight, _, cx| {
 5571                workspace.swap_pane_in_direction(SplitDirection::Right, cx)
 5572            }))
 5573            .on_action(cx.listener(|workspace, _: &SwapPaneUp, _, cx| {
 5574                workspace.swap_pane_in_direction(SplitDirection::Up, cx)
 5575            }))
 5576            .on_action(cx.listener(|workspace, _: &SwapPaneDown, _, cx| {
 5577                workspace.swap_pane_in_direction(SplitDirection::Down, cx)
 5578            }))
 5579            .on_action(cx.listener(|this, _: &ToggleLeftDock, window, cx| {
 5580                this.toggle_dock(DockPosition::Left, window, cx);
 5581            }))
 5582            .on_action(cx.listener(
 5583                |workspace: &mut Workspace, _: &ToggleRightDock, window, cx| {
 5584                    workspace.toggle_dock(DockPosition::Right, window, cx);
 5585                },
 5586            ))
 5587            .on_action(cx.listener(
 5588                |workspace: &mut Workspace, _: &ToggleBottomDock, window, cx| {
 5589                    workspace.toggle_dock(DockPosition::Bottom, window, cx);
 5590                },
 5591            ))
 5592            .on_action(cx.listener(
 5593                |workspace: &mut Workspace, _: &CloseActiveDock, window, cx| {
 5594                    if !workspace.close_active_dock(window, cx) {
 5595                        cx.propagate();
 5596                    }
 5597                },
 5598            ))
 5599            .on_action(
 5600                cx.listener(|workspace: &mut Workspace, _: &CloseAllDocks, window, cx| {
 5601                    workspace.close_all_docks(window, cx);
 5602                }),
 5603            )
 5604            .on_action(cx.listener(
 5605                |workspace: &mut Workspace, _: &ClearAllNotifications, _, cx| {
 5606                    workspace.clear_all_notifications(cx);
 5607                },
 5608            ))
 5609            .on_action(cx.listener(
 5610                |workspace: &mut Workspace, _: &SuppressNotification, _, cx| {
 5611                    if let Some((notification_id, _)) = workspace.notifications.pop() {
 5612                        workspace.suppress_notification(&notification_id, cx);
 5613                    }
 5614                },
 5615            ))
 5616            .on_action(cx.listener(
 5617                |workspace: &mut Workspace, _: &ReopenClosedItem, window, cx| {
 5618                    workspace.reopen_closed_item(window, cx).detach();
 5619                },
 5620            ))
 5621            .on_action(cx.listener(
 5622                |workspace: &mut Workspace, _: &ResetActiveDockSize, window, cx| {
 5623                    for dock in workspace.all_docks() {
 5624                        if dock.focus_handle(cx).contains_focused(window, cx) {
 5625                            let Some(panel) = dock.read(cx).active_panel() else {
 5626                                return;
 5627                            };
 5628
 5629                            // Set to `None`, then the size will fall back to the default.
 5630                            panel.clone().set_size(None, window, cx);
 5631
 5632                            return;
 5633                        }
 5634                    }
 5635                },
 5636            ))
 5637            .on_action(cx.listener(
 5638                |workspace: &mut Workspace, _: &ResetOpenDocksSize, window, cx| {
 5639                    for dock in workspace.all_docks() {
 5640                        if let Some(panel) = dock.read(cx).visible_panel() {
 5641                            // Set to `None`, then the size will fall back to the default.
 5642                            panel.clone().set_size(None, window, cx);
 5643                        }
 5644                    }
 5645                },
 5646            ))
 5647            .on_action(cx.listener(
 5648                |workspace: &mut Workspace, act: &IncreaseActiveDockSize, window, cx| {
 5649                    adjust_active_dock_size_by_px(
 5650                        px_with_ui_font_fallback(act.px, cx),
 5651                        workspace,
 5652                        window,
 5653                        cx,
 5654                    );
 5655                },
 5656            ))
 5657            .on_action(cx.listener(
 5658                |workspace: &mut Workspace, act: &DecreaseActiveDockSize, window, cx| {
 5659                    adjust_active_dock_size_by_px(
 5660                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5661                        workspace,
 5662                        window,
 5663                        cx,
 5664                    );
 5665                },
 5666            ))
 5667            .on_action(cx.listener(
 5668                |workspace: &mut Workspace, act: &IncreaseOpenDocksSize, window, cx| {
 5669                    adjust_open_docks_size_by_px(
 5670                        px_with_ui_font_fallback(act.px, cx),
 5671                        workspace,
 5672                        window,
 5673                        cx,
 5674                    );
 5675                },
 5676            ))
 5677            .on_action(cx.listener(
 5678                |workspace: &mut Workspace, act: &DecreaseOpenDocksSize, window, cx| {
 5679                    adjust_open_docks_size_by_px(
 5680                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5681                        workspace,
 5682                        window,
 5683                        cx,
 5684                    );
 5685                },
 5686            ))
 5687            .on_action(cx.listener(Workspace::toggle_centered_layout))
 5688            .on_action(cx.listener(Workspace::cancel))
 5689    }
 5690
 5691    #[cfg(any(test, feature = "test-support"))]
 5692    pub fn test_new(project: Entity<Project>, window: &mut Window, cx: &mut Context<Self>) -> Self {
 5693        use node_runtime::NodeRuntime;
 5694        use session::Session;
 5695
 5696        let client = project.read(cx).client();
 5697        let user_store = project.read(cx).user_store();
 5698
 5699        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 5700        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 5701        window.activate_window();
 5702        let app_state = Arc::new(AppState {
 5703            languages: project.read(cx).languages().clone(),
 5704            workspace_store,
 5705            client,
 5706            user_store,
 5707            fs: project.read(cx).fs().clone(),
 5708            build_window_options: |_, _| Default::default(),
 5709            node_runtime: NodeRuntime::unavailable(),
 5710            session,
 5711        });
 5712        let workspace = Self::new(Default::default(), project, app_state, window, cx);
 5713        workspace
 5714            .active_pane
 5715            .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5716        workspace
 5717    }
 5718
 5719    pub fn register_action<A: Action>(
 5720        &mut self,
 5721        callback: impl Fn(&mut Self, &A, &mut Window, &mut Context<Self>) + 'static,
 5722    ) -> &mut Self {
 5723        let callback = Arc::new(callback);
 5724
 5725        self.workspace_actions.push(Box::new(move |div, _, _, cx| {
 5726            let callback = callback.clone();
 5727            div.on_action(cx.listener(move |workspace, event, window, cx| {
 5728                (callback)(workspace, event, window, cx)
 5729            }))
 5730        }));
 5731        self
 5732    }
 5733    pub fn register_action_renderer(
 5734        &mut self,
 5735        callback: impl Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div + 'static,
 5736    ) -> &mut Self {
 5737        self.workspace_actions.push(Box::new(callback));
 5738        self
 5739    }
 5740
 5741    fn add_workspace_actions_listeners(
 5742        &self,
 5743        mut div: Div,
 5744        window: &mut Window,
 5745        cx: &mut Context<Self>,
 5746    ) -> Div {
 5747        for action in self.workspace_actions.iter() {
 5748            div = (action)(div, self, window, cx)
 5749        }
 5750        div
 5751    }
 5752
 5753    pub fn has_active_modal(&self, _: &mut Window, cx: &mut App) -> bool {
 5754        self.modal_layer.read(cx).has_active_modal()
 5755    }
 5756
 5757    pub fn active_modal<V: ManagedView + 'static>(&self, cx: &App) -> Option<Entity<V>> {
 5758        self.modal_layer.read(cx).active_modal()
 5759    }
 5760
 5761    pub fn toggle_modal<V: ModalView, B>(&mut self, window: &mut Window, cx: &mut App, build: B)
 5762    where
 5763        B: FnOnce(&mut Window, &mut Context<V>) -> V,
 5764    {
 5765        self.modal_layer.update(cx, |modal_layer, cx| {
 5766            modal_layer.toggle_modal(window, cx, build)
 5767        })
 5768    }
 5769
 5770    pub fn toggle_status_toast<V: ToastView>(&mut self, entity: Entity<V>, cx: &mut App) {
 5771        self.toast_layer
 5772            .update(cx, |toast_layer, cx| toast_layer.toggle_toast(cx, entity))
 5773    }
 5774
 5775    pub fn toggle_centered_layout(
 5776        &mut self,
 5777        _: &ToggleCenteredLayout,
 5778        _: &mut Window,
 5779        cx: &mut Context<Self>,
 5780    ) {
 5781        self.centered_layout = !self.centered_layout;
 5782        if let Some(database_id) = self.database_id() {
 5783            cx.background_spawn(DB.set_centered_layout(database_id, self.centered_layout))
 5784                .detach_and_log_err(cx);
 5785        }
 5786        cx.notify();
 5787    }
 5788
 5789    fn adjust_padding(padding: Option<f32>) -> f32 {
 5790        padding
 5791            .unwrap_or(Self::DEFAULT_PADDING)
 5792            .clamp(0.0, Self::MAX_PADDING)
 5793    }
 5794
 5795    fn render_dock(
 5796        &self,
 5797        position: DockPosition,
 5798        dock: &Entity<Dock>,
 5799        window: &mut Window,
 5800        cx: &mut App,
 5801    ) -> Option<Div> {
 5802        if self.zoomed_position == Some(position) {
 5803            return None;
 5804        }
 5805
 5806        let leader_border = dock.read(cx).active_panel().and_then(|panel| {
 5807            let pane = panel.pane(cx)?;
 5808            let follower_states = &self.follower_states;
 5809            leader_border_for_pane(follower_states, &pane, window, cx)
 5810        });
 5811
 5812        Some(
 5813            div()
 5814                .flex()
 5815                .flex_none()
 5816                .overflow_hidden()
 5817                .child(dock.clone())
 5818                .children(leader_border),
 5819        )
 5820    }
 5821
 5822    pub fn for_window(window: &mut Window, _: &mut App) -> Option<Entity<Workspace>> {
 5823        window.root().flatten()
 5824    }
 5825
 5826    pub fn zoomed_item(&self) -> Option<&AnyWeakView> {
 5827        self.zoomed.as_ref()
 5828    }
 5829
 5830    pub fn activate_next_window(&mut self, cx: &mut Context<Self>) {
 5831        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 5832            return;
 5833        };
 5834        let windows = cx.windows();
 5835        let Some(next_window) = windows
 5836            .iter()
 5837            .cycle()
 5838            .skip_while(|window| window.window_id() != current_window_id)
 5839            .nth(1)
 5840        else {
 5841            return;
 5842        };
 5843        next_window
 5844            .update(cx, |_, window, _| window.activate_window())
 5845            .ok();
 5846    }
 5847
 5848    pub fn activate_previous_window(&mut self, cx: &mut Context<Self>) {
 5849        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 5850            return;
 5851        };
 5852        let windows = cx.windows();
 5853        let Some(prev_window) = windows
 5854            .iter()
 5855            .rev()
 5856            .cycle()
 5857            .skip_while(|window| window.window_id() != current_window_id)
 5858            .nth(1)
 5859        else {
 5860            return;
 5861        };
 5862        prev_window
 5863            .update(cx, |_, window, _| window.activate_window())
 5864            .ok();
 5865    }
 5866
 5867    pub fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
 5868        if cx.stop_active_drag(window) {
 5869            return;
 5870        } else if let Some((notification_id, _)) = self.notifications.pop() {
 5871            dismiss_app_notification(&notification_id, cx);
 5872        } else {
 5873            cx.propagate();
 5874        }
 5875    }
 5876
 5877    fn adjust_dock_size_by_px(
 5878        &mut self,
 5879        panel_size: Pixels,
 5880        dock_pos: DockPosition,
 5881        px: Pixels,
 5882        window: &mut Window,
 5883        cx: &mut Context<Self>,
 5884    ) {
 5885        match dock_pos {
 5886            DockPosition::Left => self.resize_left_dock(panel_size + px, window, cx),
 5887            DockPosition::Right => self.resize_right_dock(panel_size + px, window, cx),
 5888            DockPosition::Bottom => self.resize_bottom_dock(panel_size + px, window, cx),
 5889        }
 5890    }
 5891
 5892    fn resize_left_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5893        let size = new_size.min(self.bounds.right() - RESIZE_HANDLE_SIZE);
 5894
 5895        self.left_dock.update(cx, |left_dock, cx| {
 5896            if WorkspaceSettings::get_global(cx)
 5897                .resize_all_panels_in_dock
 5898                .contains(&DockPosition::Left)
 5899            {
 5900                left_dock.resize_all_panels(Some(size), window, cx);
 5901            } else {
 5902                left_dock.resize_active_panel(Some(size), window, cx);
 5903            }
 5904        });
 5905    }
 5906
 5907    fn resize_right_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5908        let mut size = new_size.max(self.bounds.left() - RESIZE_HANDLE_SIZE);
 5909        self.left_dock.read_with(cx, |left_dock, cx| {
 5910            let left_dock_size = left_dock
 5911                .active_panel_size(window, cx)
 5912                .unwrap_or(Pixels(0.0));
 5913            if left_dock_size + size > self.bounds.right() {
 5914                size = self.bounds.right() - left_dock_size
 5915            }
 5916        });
 5917        self.right_dock.update(cx, |right_dock, cx| {
 5918            if WorkspaceSettings::get_global(cx)
 5919                .resize_all_panels_in_dock
 5920                .contains(&DockPosition::Right)
 5921            {
 5922                right_dock.resize_all_panels(Some(size), window, cx);
 5923            } else {
 5924                right_dock.resize_active_panel(Some(size), window, cx);
 5925            }
 5926        });
 5927    }
 5928
 5929    fn resize_bottom_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5930        let size = new_size.min(self.bounds.bottom() - RESIZE_HANDLE_SIZE - self.bounds.top());
 5931        self.bottom_dock.update(cx, |bottom_dock, cx| {
 5932            if WorkspaceSettings::get_global(cx)
 5933                .resize_all_panels_in_dock
 5934                .contains(&DockPosition::Bottom)
 5935            {
 5936                bottom_dock.resize_all_panels(Some(size), window, cx);
 5937            } else {
 5938                bottom_dock.resize_active_panel(Some(size), window, cx);
 5939            }
 5940        });
 5941    }
 5942}
 5943
 5944fn leader_border_for_pane(
 5945    follower_states: &HashMap<CollaboratorId, FollowerState>,
 5946    pane: &Entity<Pane>,
 5947    _: &Window,
 5948    cx: &App,
 5949) -> Option<Div> {
 5950    let (leader_id, _follower_state) = follower_states.iter().find_map(|(leader_id, state)| {
 5951        if state.pane() == pane {
 5952            Some((*leader_id, state))
 5953        } else {
 5954            None
 5955        }
 5956    })?;
 5957
 5958    let mut leader_color = match leader_id {
 5959        CollaboratorId::PeerId(leader_peer_id) => {
 5960            let room = ActiveCall::try_global(cx)?.read(cx).room()?.read(cx);
 5961            let leader = room.remote_participant_for_peer_id(leader_peer_id)?;
 5962
 5963            cx.theme()
 5964                .players()
 5965                .color_for_participant(leader.participant_index.0)
 5966                .cursor
 5967        }
 5968        CollaboratorId::Agent => cx.theme().players().agent().cursor,
 5969    };
 5970    leader_color.fade_out(0.3);
 5971    Some(
 5972        div()
 5973            .absolute()
 5974            .size_full()
 5975            .left_0()
 5976            .top_0()
 5977            .border_2()
 5978            .border_color(leader_color),
 5979    )
 5980}
 5981
 5982fn window_bounds_env_override() -> Option<Bounds<Pixels>> {
 5983    ZED_WINDOW_POSITION
 5984        .zip(*ZED_WINDOW_SIZE)
 5985        .map(|(position, size)| Bounds {
 5986            origin: position,
 5987            size,
 5988        })
 5989}
 5990
 5991fn open_items(
 5992    serialized_workspace: Option<SerializedWorkspace>,
 5993    mut project_paths_to_open: Vec<(PathBuf, Option<ProjectPath>)>,
 5994    window: &mut Window,
 5995    cx: &mut Context<Workspace>,
 5996) -> impl 'static + Future<Output = Result<Vec<Option<Result<Box<dyn ItemHandle>>>>>> + use<> {
 5997    let restored_items = serialized_workspace.map(|serialized_workspace| {
 5998        Workspace::load_workspace(
 5999            serialized_workspace,
 6000            project_paths_to_open
 6001                .iter()
 6002                .map(|(_, project_path)| project_path)
 6003                .cloned()
 6004                .collect(),
 6005            window,
 6006            cx,
 6007        )
 6008    });
 6009
 6010    cx.spawn_in(window, async move |workspace, cx| {
 6011        let mut opened_items = Vec::with_capacity(project_paths_to_open.len());
 6012
 6013        if let Some(restored_items) = restored_items {
 6014            let restored_items = restored_items.await?;
 6015
 6016            let restored_project_paths = restored_items
 6017                .iter()
 6018                .filter_map(|item| {
 6019                    cx.update(|_, cx| item.as_ref()?.project_path(cx))
 6020                        .ok()
 6021                        .flatten()
 6022                })
 6023                .collect::<HashSet<_>>();
 6024
 6025            for restored_item in restored_items {
 6026                opened_items.push(restored_item.map(Ok));
 6027            }
 6028
 6029            project_paths_to_open
 6030                .iter_mut()
 6031                .for_each(|(_, project_path)| {
 6032                    if let Some(project_path_to_open) = project_path {
 6033                        if restored_project_paths.contains(project_path_to_open) {
 6034                            *project_path = None;
 6035                        }
 6036                    }
 6037                });
 6038        } else {
 6039            for _ in 0..project_paths_to_open.len() {
 6040                opened_items.push(None);
 6041            }
 6042        }
 6043        assert!(opened_items.len() == project_paths_to_open.len());
 6044
 6045        let tasks =
 6046            project_paths_to_open
 6047                .into_iter()
 6048                .enumerate()
 6049                .map(|(ix, (abs_path, project_path))| {
 6050                    let workspace = workspace.clone();
 6051                    cx.spawn(async move |cx| {
 6052                        let file_project_path = project_path?;
 6053                        let abs_path_task = workspace.update(cx, |workspace, cx| {
 6054                            workspace.project().update(cx, |project, cx| {
 6055                                project.resolve_abs_path(abs_path.to_string_lossy().as_ref(), cx)
 6056                            })
 6057                        });
 6058
 6059                        // We only want to open file paths here. If one of the items
 6060                        // here is a directory, it was already opened further above
 6061                        // with a `find_or_create_worktree`.
 6062                        if let Ok(task) = abs_path_task {
 6063                            if task.await.map_or(true, |p| p.is_file()) {
 6064                                return Some((
 6065                                    ix,
 6066                                    workspace
 6067                                        .update_in(cx, |workspace, window, cx| {
 6068                                            workspace.open_path(
 6069                                                file_project_path,
 6070                                                None,
 6071                                                true,
 6072                                                window,
 6073                                                cx,
 6074                                            )
 6075                                        })
 6076                                        .log_err()?
 6077                                        .await,
 6078                                ));
 6079                            }
 6080                        }
 6081                        None
 6082                    })
 6083                });
 6084
 6085        let tasks = tasks.collect::<Vec<_>>();
 6086
 6087        let tasks = futures::future::join_all(tasks);
 6088        for (ix, path_open_result) in tasks.await.into_iter().flatten() {
 6089            opened_items[ix] = Some(path_open_result);
 6090        }
 6091
 6092        Ok(opened_items)
 6093    })
 6094}
 6095
 6096enum ActivateInDirectionTarget {
 6097    Pane(Entity<Pane>),
 6098    Dock(Entity<Dock>),
 6099}
 6100
 6101fn notify_if_database_failed(workspace: WindowHandle<Workspace>, cx: &mut AsyncApp) {
 6102    workspace
 6103        .update(cx, |workspace, _, cx| {
 6104            if (*db::ALL_FILE_DB_FAILED).load(std::sync::atomic::Ordering::Acquire) {
 6105                struct DatabaseFailedNotification;
 6106
 6107                workspace.show_notification(
 6108                    NotificationId::unique::<DatabaseFailedNotification>(),
 6109                    cx,
 6110                    |cx| {
 6111                        cx.new(|cx| {
 6112                            MessageNotification::new("Failed to load the database file.", cx)
 6113                                .primary_message("File an Issue")
 6114                                .primary_icon(IconName::Plus)
 6115                                .primary_on_click(|window, cx| {
 6116                                    window.dispatch_action(Box::new(FileBugReport), cx)
 6117                                })
 6118                        })
 6119                    },
 6120                );
 6121            }
 6122        })
 6123        .log_err();
 6124}
 6125
 6126fn px_with_ui_font_fallback(val: u32, cx: &Context<Workspace>) -> Pixels {
 6127    if val == 0 {
 6128        ThemeSettings::get_global(cx).ui_font_size(cx)
 6129    } else {
 6130        px(val as f32)
 6131    }
 6132}
 6133
 6134fn adjust_active_dock_size_by_px(
 6135    px: Pixels,
 6136    workspace: &mut Workspace,
 6137    window: &mut Window,
 6138    cx: &mut Context<Workspace>,
 6139) {
 6140    let Some(active_dock) = workspace
 6141        .all_docks()
 6142        .into_iter()
 6143        .find(|dock| dock.focus_handle(cx).contains_focused(window, cx))
 6144    else {
 6145        return;
 6146    };
 6147    let dock = active_dock.read(cx);
 6148    let Some(panel_size) = dock.active_panel_size(window, cx) else {
 6149        return;
 6150    };
 6151    let dock_pos = dock.position();
 6152    workspace.adjust_dock_size_by_px(panel_size, dock_pos, px, window, cx);
 6153}
 6154
 6155fn adjust_open_docks_size_by_px(
 6156    px: Pixels,
 6157    workspace: &mut Workspace,
 6158    window: &mut Window,
 6159    cx: &mut Context<Workspace>,
 6160) {
 6161    let docks = workspace
 6162        .all_docks()
 6163        .into_iter()
 6164        .filter_map(|dock| {
 6165            if dock.read(cx).is_open() {
 6166                let dock = dock.read(cx);
 6167                let panel_size = dock.active_panel_size(window, cx)?;
 6168                let dock_pos = dock.position();
 6169                Some((panel_size, dock_pos, px))
 6170            } else {
 6171                None
 6172            }
 6173        })
 6174        .collect::<Vec<_>>();
 6175
 6176    docks
 6177        .into_iter()
 6178        .for_each(|(panel_size, dock_pos, offset)| {
 6179            workspace.adjust_dock_size_by_px(panel_size, dock_pos, offset, window, cx);
 6180        });
 6181}
 6182
 6183impl Focusable for Workspace {
 6184    fn focus_handle(&self, cx: &App) -> FocusHandle {
 6185        self.active_pane.focus_handle(cx)
 6186    }
 6187}
 6188
 6189#[derive(Clone)]
 6190struct DraggedDock(DockPosition);
 6191
 6192impl Render for DraggedDock {
 6193    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
 6194        gpui::Empty
 6195    }
 6196}
 6197
 6198impl Render for Workspace {
 6199    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 6200        let mut context = KeyContext::new_with_defaults();
 6201        context.add("Workspace");
 6202        context.set("keyboard_layout", cx.keyboard_layout().name().to_string());
 6203        if let Some(status) = self
 6204            .debugger_provider
 6205            .as_ref()
 6206            .and_then(|provider| provider.active_thread_state(cx))
 6207        {
 6208            match status {
 6209                ThreadStatus::Running | ThreadStatus::Stepping => {
 6210                    context.add("debugger_running");
 6211                }
 6212                ThreadStatus::Stopped => context.add("debugger_stopped"),
 6213                ThreadStatus::Exited | ThreadStatus::Ended => {}
 6214            }
 6215        }
 6216
 6217        let centered_layout = self.centered_layout
 6218            && self.center.panes().len() == 1
 6219            && self.active_item(cx).is_some();
 6220        let render_padding = |size| {
 6221            (size > 0.0).then(|| {
 6222                div()
 6223                    .h_full()
 6224                    .w(relative(size))
 6225                    .bg(cx.theme().colors().editor_background)
 6226                    .border_color(cx.theme().colors().pane_group_border)
 6227            })
 6228        };
 6229        let paddings = if centered_layout {
 6230            let settings = WorkspaceSettings::get_global(cx).centered_layout;
 6231            (
 6232                render_padding(Self::adjust_padding(settings.left_padding)),
 6233                render_padding(Self::adjust_padding(settings.right_padding)),
 6234            )
 6235        } else {
 6236            (None, None)
 6237        };
 6238        let ui_font = theme::setup_ui_font(window, cx);
 6239
 6240        let theme = cx.theme().clone();
 6241        let colors = theme.colors();
 6242        let notification_entities = self
 6243            .notifications
 6244            .iter()
 6245            .map(|(_, notification)| notification.entity_id())
 6246            .collect::<Vec<_>>();
 6247
 6248        client_side_decorations(
 6249            self.actions(div(), window, cx)
 6250                .key_context(context)
 6251                .relative()
 6252                .size_full()
 6253                .flex()
 6254                .flex_col()
 6255                .font(ui_font)
 6256                .gap_0()
 6257                .justify_start()
 6258                .items_start()
 6259                .text_color(colors.text)
 6260                .overflow_hidden()
 6261                .children(self.titlebar_item.clone())
 6262                .on_modifiers_changed(move |_, _, cx| {
 6263                    for &id in &notification_entities {
 6264                        cx.notify(id);
 6265                    }
 6266                })
 6267                .child(
 6268                    div()
 6269                        .size_full()
 6270                        .relative()
 6271                        .flex_1()
 6272                        .flex()
 6273                        .flex_col()
 6274                        .child(
 6275                            div()
 6276                                .id("workspace")
 6277                                .bg(colors.background)
 6278                                .relative()
 6279                                .flex_1()
 6280                                .w_full()
 6281                                .flex()
 6282                                .flex_col()
 6283                                .overflow_hidden()
 6284                                .border_t_1()
 6285                                .border_b_1()
 6286                                .border_color(colors.border)
 6287                                .child({
 6288                                    let this = cx.entity().clone();
 6289                                    canvas(
 6290                                        move |bounds, window, cx| {
 6291                                            this.update(cx, |this, cx| {
 6292                                                let bounds_changed = this.bounds != bounds;
 6293                                                this.bounds = bounds;
 6294
 6295                                                if bounds_changed {
 6296                                                    this.left_dock.update(cx, |dock, cx| {
 6297                                                        dock.clamp_panel_size(
 6298                                                            bounds.size.width,
 6299                                                            window,
 6300                                                            cx,
 6301                                                        )
 6302                                                    });
 6303
 6304                                                    this.right_dock.update(cx, |dock, cx| {
 6305                                                        dock.clamp_panel_size(
 6306                                                            bounds.size.width,
 6307                                                            window,
 6308                                                            cx,
 6309                                                        )
 6310                                                    });
 6311
 6312                                                    this.bottom_dock.update(cx, |dock, cx| {
 6313                                                        dock.clamp_panel_size(
 6314                                                            bounds.size.height,
 6315                                                            window,
 6316                                                            cx,
 6317                                                        )
 6318                                                    });
 6319                                                }
 6320                                            })
 6321                                        },
 6322                                        |_, _, _, _| {},
 6323                                    )
 6324                                    .absolute()
 6325                                    .size_full()
 6326                                })
 6327                                .when(self.zoomed.is_none(), |this| {
 6328                                    this.on_drag_move(cx.listener(
 6329                                        move |workspace,
 6330                                              e: &DragMoveEvent<DraggedDock>,
 6331                                              window,
 6332                                              cx| {
 6333                                            if workspace.previous_dock_drag_coordinates
 6334                                                != Some(e.event.position)
 6335                                            {
 6336                                                workspace.previous_dock_drag_coordinates =
 6337                                                    Some(e.event.position);
 6338                                                match e.drag(cx).0 {
 6339                                                    DockPosition::Left => {
 6340                                                        workspace.resize_left_dock(
 6341                                                            e.event.position.x
 6342                                                                - workspace.bounds.left(),
 6343                                                            window,
 6344                                                            cx,
 6345                                                        );
 6346                                                    }
 6347                                                    DockPosition::Right => {
 6348                                                        workspace.resize_right_dock(
 6349                                                            workspace.bounds.right()
 6350                                                                - e.event.position.x,
 6351                                                            window,
 6352                                                            cx,
 6353                                                        );
 6354                                                    }
 6355                                                    DockPosition::Bottom => {
 6356                                                        workspace.resize_bottom_dock(
 6357                                                            workspace.bounds.bottom()
 6358                                                                - e.event.position.y,
 6359                                                            window,
 6360                                                            cx,
 6361                                                        );
 6362                                                    }
 6363                                                };
 6364                                                workspace.serialize_workspace(window, cx);
 6365                                            }
 6366                                        },
 6367                                    ))
 6368                                })
 6369                                .child({
 6370                                    match self.bottom_dock_layout {
 6371                                        BottomDockLayout::Full => div()
 6372                                            .flex()
 6373                                            .flex_col()
 6374                                            .h_full()
 6375                                            .child(
 6376                                                div()
 6377                                                    .flex()
 6378                                                    .flex_row()
 6379                                                    .flex_1()
 6380                                                    .overflow_hidden()
 6381                                                    .children(self.render_dock(
 6382                                                        DockPosition::Left,
 6383                                                        &self.left_dock,
 6384                                                        window,
 6385                                                        cx,
 6386                                                    ))
 6387                                                    .child(
 6388                                                        div()
 6389                                                            .flex()
 6390                                                            .flex_col()
 6391                                                            .flex_1()
 6392                                                            .overflow_hidden()
 6393                                                            .child(
 6394                                                                h_flex()
 6395                                                                    .flex_1()
 6396                                                                    .when_some(
 6397                                                                        paddings.0,
 6398                                                                        |this, p| {
 6399                                                                            this.child(
 6400                                                                                p.border_r_1(),
 6401                                                                            )
 6402                                                                        },
 6403                                                                    )
 6404                                                                    .child(self.center.render(
 6405                                                                        self.zoomed.as_ref(),
 6406                                                                        &PaneRenderContext {
 6407                                                                            follower_states:
 6408                                                                                &self.follower_states,
 6409                                                                            active_call: self.active_call(),
 6410                                                                            active_pane: &self.active_pane,
 6411                                                                            app_state: &self.app_state,
 6412                                                                            project: &self.project,
 6413                                                                            workspace: &self.weak_self,
 6414                                                                        },
 6415                                                                        window,
 6416                                                                        cx,
 6417                                                                    ))
 6418                                                                    .when_some(
 6419                                                                        paddings.1,
 6420                                                                        |this, p| {
 6421                                                                            this.child(
 6422                                                                                p.border_l_1(),
 6423                                                                            )
 6424                                                                        },
 6425                                                                    ),
 6426                                                            ),
 6427                                                    )
 6428                                                    .children(self.render_dock(
 6429                                                        DockPosition::Right,
 6430                                                        &self.right_dock,
 6431                                                        window,
 6432                                                        cx,
 6433                                                    )),
 6434                                            )
 6435                                            .child(div().w_full().children(self.render_dock(
 6436                                                DockPosition::Bottom,
 6437                                                &self.bottom_dock,
 6438                                                window,
 6439                                                cx
 6440                                            ))),
 6441
 6442                                        BottomDockLayout::LeftAligned => div()
 6443                                            .flex()
 6444                                            .flex_row()
 6445                                            .h_full()
 6446                                            .child(
 6447                                                div()
 6448                                                    .flex()
 6449                                                    .flex_col()
 6450                                                    .flex_1()
 6451                                                    .h_full()
 6452                                                    .child(
 6453                                                        div()
 6454                                                            .flex()
 6455                                                            .flex_row()
 6456                                                            .flex_1()
 6457                                                            .children(self.render_dock(DockPosition::Left, &self.left_dock, window, cx))
 6458                                                            .child(
 6459                                                                div()
 6460                                                                    .flex()
 6461                                                                    .flex_col()
 6462                                                                    .flex_1()
 6463                                                                    .overflow_hidden()
 6464                                                                    .child(
 6465                                                                        h_flex()
 6466                                                                            .flex_1()
 6467                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6468                                                                            .child(self.center.render(
 6469                                                                                self.zoomed.as_ref(),
 6470                                                                                &PaneRenderContext {
 6471                                                                                    follower_states:
 6472                                                                                        &self.follower_states,
 6473                                                                                    active_call: self.active_call(),
 6474                                                                                    active_pane: &self.active_pane,
 6475                                                                                    app_state: &self.app_state,
 6476                                                                                    project: &self.project,
 6477                                                                                    workspace: &self.weak_self,
 6478                                                                                },
 6479                                                                                window,
 6480                                                                                cx,
 6481                                                                            ))
 6482                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6483                                                                    )
 6484                                                            )
 6485                                                    )
 6486                                                    .child(
 6487                                                        div()
 6488                                                            .w_full()
 6489                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6490                                                    ),
 6491                                            )
 6492                                            .children(self.render_dock(
 6493                                                DockPosition::Right,
 6494                                                &self.right_dock,
 6495                                                window,
 6496                                                cx,
 6497                                            )),
 6498
 6499                                        BottomDockLayout::RightAligned => div()
 6500                                            .flex()
 6501                                            .flex_row()
 6502                                            .h_full()
 6503                                            .children(self.render_dock(
 6504                                                DockPosition::Left,
 6505                                                &self.left_dock,
 6506                                                window,
 6507                                                cx,
 6508                                            ))
 6509                                            .child(
 6510                                                div()
 6511                                                    .flex()
 6512                                                    .flex_col()
 6513                                                    .flex_1()
 6514                                                    .h_full()
 6515                                                    .child(
 6516                                                        div()
 6517                                                            .flex()
 6518                                                            .flex_row()
 6519                                                            .flex_1()
 6520                                                            .child(
 6521                                                                div()
 6522                                                                    .flex()
 6523                                                                    .flex_col()
 6524                                                                    .flex_1()
 6525                                                                    .overflow_hidden()
 6526                                                                    .child(
 6527                                                                        h_flex()
 6528                                                                            .flex_1()
 6529                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6530                                                                            .child(self.center.render(
 6531                                                                                self.zoomed.as_ref(),
 6532                                                                                &PaneRenderContext {
 6533                                                                                    follower_states:
 6534                                                                                        &self.follower_states,
 6535                                                                                    active_call: self.active_call(),
 6536                                                                                    active_pane: &self.active_pane,
 6537                                                                                    app_state: &self.app_state,
 6538                                                                                    project: &self.project,
 6539                                                                                    workspace: &self.weak_self,
 6540                                                                                },
 6541                                                                                window,
 6542                                                                                cx,
 6543                                                                            ))
 6544                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6545                                                                    )
 6546                                                            )
 6547                                                            .children(self.render_dock(DockPosition::Right, &self.right_dock, window, cx))
 6548                                                    )
 6549                                                    .child(
 6550                                                        div()
 6551                                                            .w_full()
 6552                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6553                                                    ),
 6554                                            ),
 6555
 6556                                        BottomDockLayout::Contained => div()
 6557                                            .flex()
 6558                                            .flex_row()
 6559                                            .h_full()
 6560                                            .children(self.render_dock(
 6561                                                DockPosition::Left,
 6562                                                &self.left_dock,
 6563                                                window,
 6564                                                cx,
 6565                                            ))
 6566                                            .child(
 6567                                                div()
 6568                                                    .flex()
 6569                                                    .flex_col()
 6570                                                    .flex_1()
 6571                                                    .overflow_hidden()
 6572                                                    .child(
 6573                                                        h_flex()
 6574                                                            .flex_1()
 6575                                                            .when_some(paddings.0, |this, p| {
 6576                                                                this.child(p.border_r_1())
 6577                                                            })
 6578                                                            .child(self.center.render(
 6579                                                                self.zoomed.as_ref(),
 6580                                                                &PaneRenderContext {
 6581                                                                    follower_states:
 6582                                                                        &self.follower_states,
 6583                                                                    active_call: self.active_call(),
 6584                                                                    active_pane: &self.active_pane,
 6585                                                                    app_state: &self.app_state,
 6586                                                                    project: &self.project,
 6587                                                                    workspace: &self.weak_self,
 6588                                                                },
 6589                                                                window,
 6590                                                                cx,
 6591                                                            ))
 6592                                                            .when_some(paddings.1, |this, p| {
 6593                                                                this.child(p.border_l_1())
 6594                                                            }),
 6595                                                    )
 6596                                                    .children(self.render_dock(
 6597                                                        DockPosition::Bottom,
 6598                                                        &self.bottom_dock,
 6599                                                        window,
 6600                                                        cx,
 6601                                                    )),
 6602                                            )
 6603                                            .children(self.render_dock(
 6604                                                DockPosition::Right,
 6605                                                &self.right_dock,
 6606                                                window,
 6607                                                cx,
 6608                                            )),
 6609                                    }
 6610                                })
 6611                                .children(self.zoomed.as_ref().and_then(|view| {
 6612                                    let zoomed_view = view.upgrade()?;
 6613                                    let div = div()
 6614                                        .occlude()
 6615                                        .absolute()
 6616                                        .overflow_hidden()
 6617                                        .border_color(colors.border)
 6618                                        .bg(colors.background)
 6619                                        .child(zoomed_view)
 6620                                        .inset_0()
 6621                                        .shadow_lg();
 6622
 6623                                    Some(match self.zoomed_position {
 6624                                        Some(DockPosition::Left) => div.right_2().border_r_1(),
 6625                                        Some(DockPosition::Right) => div.left_2().border_l_1(),
 6626                                        Some(DockPosition::Bottom) => div.top_2().border_t_1(),
 6627                                        None => {
 6628                                            div.top_2().bottom_2().left_2().right_2().border_1()
 6629                                        }
 6630                                    })
 6631                                }))
 6632                                .children(self.render_notifications(window, cx)),
 6633                        )
 6634                        .child(self.status_bar.clone())
 6635                        .child(self.modal_layer.clone())
 6636                        .child(self.toast_layer.clone()),
 6637                ),
 6638            window,
 6639            cx,
 6640        )
 6641    }
 6642}
 6643
 6644impl WorkspaceStore {
 6645    pub fn new(client: Arc<Client>, cx: &mut Context<Self>) -> Self {
 6646        Self {
 6647            workspaces: Default::default(),
 6648            _subscriptions: vec![
 6649                client.add_request_handler(cx.weak_entity(), Self::handle_follow),
 6650                client.add_message_handler(cx.weak_entity(), Self::handle_update_followers),
 6651            ],
 6652            client,
 6653        }
 6654    }
 6655
 6656    pub fn update_followers(
 6657        &self,
 6658        project_id: Option<u64>,
 6659        update: proto::update_followers::Variant,
 6660        cx: &App,
 6661    ) -> Option<()> {
 6662        let active_call = ActiveCall::try_global(cx)?;
 6663        let room_id = active_call.read(cx).room()?.read(cx).id();
 6664        self.client
 6665            .send(proto::UpdateFollowers {
 6666                room_id,
 6667                project_id,
 6668                variant: Some(update),
 6669            })
 6670            .log_err()
 6671    }
 6672
 6673    pub async fn handle_follow(
 6674        this: Entity<Self>,
 6675        envelope: TypedEnvelope<proto::Follow>,
 6676        mut cx: AsyncApp,
 6677    ) -> Result<proto::FollowResponse> {
 6678        this.update(&mut cx, |this, cx| {
 6679            let follower = Follower {
 6680                project_id: envelope.payload.project_id,
 6681                peer_id: envelope.original_sender_id()?,
 6682            };
 6683
 6684            let mut response = proto::FollowResponse::default();
 6685            this.workspaces.retain(|workspace| {
 6686                workspace
 6687                    .update(cx, |workspace, window, cx| {
 6688                        let handler_response =
 6689                            workspace.handle_follow(follower.project_id, window, cx);
 6690                        if let Some(active_view) = handler_response.active_view.clone() {
 6691                            if workspace.project.read(cx).remote_id() == follower.project_id {
 6692                                response.active_view = Some(active_view)
 6693                            }
 6694                        }
 6695                    })
 6696                    .is_ok()
 6697            });
 6698
 6699            Ok(response)
 6700        })?
 6701    }
 6702
 6703    async fn handle_update_followers(
 6704        this: Entity<Self>,
 6705        envelope: TypedEnvelope<proto::UpdateFollowers>,
 6706        mut cx: AsyncApp,
 6707    ) -> Result<()> {
 6708        let leader_id = envelope.original_sender_id()?;
 6709        let update = envelope.payload;
 6710
 6711        this.update(&mut cx, |this, cx| {
 6712            this.workspaces.retain(|workspace| {
 6713                workspace
 6714                    .update(cx, |workspace, window, cx| {
 6715                        let project_id = workspace.project.read(cx).remote_id();
 6716                        if update.project_id != project_id && update.project_id.is_some() {
 6717                            return;
 6718                        }
 6719                        workspace.handle_update_followers(leader_id, update.clone(), window, cx);
 6720                    })
 6721                    .is_ok()
 6722            });
 6723            Ok(())
 6724        })?
 6725    }
 6726
 6727    pub fn workspaces(&self) -> &HashSet<WindowHandle<Workspace>> {
 6728        &self.workspaces
 6729    }
 6730}
 6731
 6732impl ViewId {
 6733    pub(crate) fn from_proto(message: proto::ViewId) -> Result<Self> {
 6734        Ok(Self {
 6735            creator: message
 6736                .creator
 6737                .map(CollaboratorId::PeerId)
 6738                .context("creator is missing")?,
 6739            id: message.id,
 6740        })
 6741    }
 6742
 6743    pub(crate) fn to_proto(self) -> Option<proto::ViewId> {
 6744        if let CollaboratorId::PeerId(peer_id) = self.creator {
 6745            Some(proto::ViewId {
 6746                creator: Some(peer_id),
 6747                id: self.id,
 6748            })
 6749        } else {
 6750            None
 6751        }
 6752    }
 6753}
 6754
 6755impl FollowerState {
 6756    fn pane(&self) -> &Entity<Pane> {
 6757        self.dock_pane.as_ref().unwrap_or(&self.center_pane)
 6758    }
 6759}
 6760
 6761pub trait WorkspaceHandle {
 6762    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath>;
 6763}
 6764
 6765impl WorkspaceHandle for Entity<Workspace> {
 6766    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath> {
 6767        self.read(cx)
 6768            .worktrees(cx)
 6769            .flat_map(|worktree| {
 6770                let worktree_id = worktree.read(cx).id();
 6771                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
 6772                    worktree_id,
 6773                    path: f.path.clone(),
 6774                })
 6775            })
 6776            .collect::<Vec<_>>()
 6777    }
 6778}
 6779
 6780impl std::fmt::Debug for OpenPaths {
 6781    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
 6782        f.debug_struct("OpenPaths")
 6783            .field("paths", &self.paths)
 6784            .finish()
 6785    }
 6786}
 6787
 6788pub async fn last_opened_workspace_location() -> Option<SerializedWorkspaceLocation> {
 6789    DB.last_workspace().await.log_err().flatten()
 6790}
 6791
 6792pub fn last_session_workspace_locations(
 6793    last_session_id: &str,
 6794    last_session_window_stack: Option<Vec<WindowId>>,
 6795) -> Option<Vec<SerializedWorkspaceLocation>> {
 6796    DB.last_session_workspace_locations(last_session_id, last_session_window_stack)
 6797        .log_err()
 6798}
 6799
 6800actions!(
 6801    collab,
 6802    [
 6803        /// Opens the channel notes for the current call.
 6804        ///
 6805        /// If you want to open a specific channel, use `zed::OpenZedUrl` with a channel notes URL -
 6806        /// can be copied via "Copy link to section" in the context menu of the channel notes
 6807        /// buffer. These URLs look like `https://zed.dev/channel/channel-name-CHANNEL_ID/notes`.
 6808        OpenChannelNotes,
 6809        /// Mutes your microphone.
 6810        Mute,
 6811        /// Deafens yourself (mute both microphone and speakers).
 6812        Deafen,
 6813        /// Leaves the current call.
 6814        LeaveCall,
 6815        /// Shares the current project with collaborators.
 6816        ShareProject,
 6817        /// Shares your screen with collaborators.
 6818        ScreenShare
 6819    ]
 6820);
 6821actions!(
 6822    zed,
 6823    [
 6824        /// Opens the Zed log file.
 6825        OpenLog
 6826    ]
 6827);
 6828
 6829async fn join_channel_internal(
 6830    channel_id: ChannelId,
 6831    app_state: &Arc<AppState>,
 6832    requesting_window: Option<WindowHandle<Workspace>>,
 6833    active_call: &Entity<ActiveCall>,
 6834    cx: &mut AsyncApp,
 6835) -> Result<bool> {
 6836    let (should_prompt, open_room) = active_call.update(cx, |active_call, cx| {
 6837        let Some(room) = active_call.room().map(|room| room.read(cx)) else {
 6838            return (false, None);
 6839        };
 6840
 6841        let already_in_channel = room.channel_id() == Some(channel_id);
 6842        let should_prompt = room.is_sharing_project()
 6843            && !room.remote_participants().is_empty()
 6844            && !already_in_channel;
 6845        let open_room = if already_in_channel {
 6846            active_call.room().cloned()
 6847        } else {
 6848            None
 6849        };
 6850        (should_prompt, open_room)
 6851    })?;
 6852
 6853    if let Some(room) = open_room {
 6854        let task = room.update(cx, |room, cx| {
 6855            if let Some((project, host)) = room.most_active_project(cx) {
 6856                return Some(join_in_room_project(project, host, app_state.clone(), cx));
 6857            }
 6858
 6859            None
 6860        })?;
 6861        if let Some(task) = task {
 6862            task.await?;
 6863        }
 6864        return anyhow::Ok(true);
 6865    }
 6866
 6867    if should_prompt {
 6868        if let Some(workspace) = requesting_window {
 6869            let answer = workspace
 6870                .update(cx, |_, window, cx| {
 6871                    window.prompt(
 6872                        PromptLevel::Warning,
 6873                        "Do you want to switch channels?",
 6874                        Some("Leaving this call will unshare your current project."),
 6875                        &["Yes, Join Channel", "Cancel"],
 6876                        cx,
 6877                    )
 6878                })?
 6879                .await;
 6880
 6881            if answer == Ok(1) {
 6882                return Ok(false);
 6883            }
 6884        } else {
 6885            return Ok(false); // unreachable!() hopefully
 6886        }
 6887    }
 6888
 6889    let client = cx.update(|cx| active_call.read(cx).client())?;
 6890
 6891    let mut client_status = client.status();
 6892
 6893    // this loop will terminate within client::CONNECTION_TIMEOUT seconds.
 6894    'outer: loop {
 6895        let Some(status) = client_status.recv().await else {
 6896            anyhow::bail!("error connecting");
 6897        };
 6898
 6899        match status {
 6900            Status::Connecting
 6901            | Status::Authenticating
 6902            | Status::Reconnecting
 6903            | Status::Reauthenticating => continue,
 6904            Status::Connected { .. } => break 'outer,
 6905            Status::SignedOut => return Err(ErrorCode::SignedOut.into()),
 6906            Status::UpgradeRequired => return Err(ErrorCode::UpgradeRequired.into()),
 6907            Status::ConnectionError | Status::ConnectionLost | Status::ReconnectionError { .. } => {
 6908                return Err(ErrorCode::Disconnected.into());
 6909            }
 6910        }
 6911    }
 6912
 6913    let room = active_call
 6914        .update(cx, |active_call, cx| {
 6915            active_call.join_channel(channel_id, cx)
 6916        })?
 6917        .await?;
 6918
 6919    let Some(room) = room else {
 6920        return anyhow::Ok(true);
 6921    };
 6922
 6923    room.update(cx, |room, _| room.room_update_completed())?
 6924        .await;
 6925
 6926    let task = room.update(cx, |room, cx| {
 6927        if let Some((project, host)) = room.most_active_project(cx) {
 6928            return Some(join_in_room_project(project, host, app_state.clone(), cx));
 6929        }
 6930
 6931        // If you are the first to join a channel, see if you should share your project.
 6932        if room.remote_participants().is_empty() && !room.local_participant_is_guest() {
 6933            if let Some(workspace) = requesting_window {
 6934                let project = workspace.update(cx, |workspace, _, cx| {
 6935                    let project = workspace.project.read(cx);
 6936
 6937                    if !CallSettings::get_global(cx).share_on_join {
 6938                        return None;
 6939                    }
 6940
 6941                    if (project.is_local() || project.is_via_ssh())
 6942                        && project.visible_worktrees(cx).any(|tree| {
 6943                            tree.read(cx)
 6944                                .root_entry()
 6945                                .map_or(false, |entry| entry.is_dir())
 6946                        })
 6947                    {
 6948                        Some(workspace.project.clone())
 6949                    } else {
 6950                        None
 6951                    }
 6952                });
 6953                if let Ok(Some(project)) = project {
 6954                    return Some(cx.spawn(async move |room, cx| {
 6955                        room.update(cx, |room, cx| room.share_project(project, cx))?
 6956                            .await?;
 6957                        Ok(())
 6958                    }));
 6959                }
 6960            }
 6961        }
 6962
 6963        None
 6964    })?;
 6965    if let Some(task) = task {
 6966        task.await?;
 6967        return anyhow::Ok(true);
 6968    }
 6969    anyhow::Ok(false)
 6970}
 6971
 6972pub fn join_channel(
 6973    channel_id: ChannelId,
 6974    app_state: Arc<AppState>,
 6975    requesting_window: Option<WindowHandle<Workspace>>,
 6976    cx: &mut App,
 6977) -> Task<Result<()>> {
 6978    let active_call = ActiveCall::global(cx);
 6979    cx.spawn(async move |cx| {
 6980        let result = join_channel_internal(
 6981            channel_id,
 6982            &app_state,
 6983            requesting_window,
 6984            &active_call,
 6985             cx,
 6986        )
 6987            .await;
 6988
 6989        // join channel succeeded, and opened a window
 6990        if matches!(result, Ok(true)) {
 6991            return anyhow::Ok(());
 6992        }
 6993
 6994        // find an existing workspace to focus and show call controls
 6995        let mut active_window =
 6996            requesting_window.or_else(|| activate_any_workspace_window( cx));
 6997        if active_window.is_none() {
 6998            // no open workspaces, make one to show the error in (blergh)
 6999            let (window_handle, _) = cx
 7000                .update(|cx| {
 7001                    Workspace::new_local(vec![], app_state.clone(), requesting_window, None, cx)
 7002                })?
 7003                .await?;
 7004
 7005            if result.is_ok() {
 7006                cx.update(|cx| {
 7007                    cx.dispatch_action(&OpenChannelNotes);
 7008                }).log_err();
 7009            }
 7010
 7011            active_window = Some(window_handle);
 7012        }
 7013
 7014        if let Err(err) = result {
 7015            log::error!("failed to join channel: {}", err);
 7016            if let Some(active_window) = active_window {
 7017                active_window
 7018                    .update(cx, |_, window, cx| {
 7019                        let detail: SharedString = match err.error_code() {
 7020                            ErrorCode::SignedOut => {
 7021                                "Please sign in to continue.".into()
 7022                            }
 7023                            ErrorCode::UpgradeRequired => {
 7024                                "Your are running an unsupported version of Zed. Please update to continue.".into()
 7025                            }
 7026                            ErrorCode::NoSuchChannel => {
 7027                                "No matching channel was found. Please check the link and try again.".into()
 7028                            }
 7029                            ErrorCode::Forbidden => {
 7030                                "This channel is private, and you do not have access. Please ask someone to add you and try again.".into()
 7031                            }
 7032                            ErrorCode::Disconnected => "Please check your internet connection and try again.".into(),
 7033                            _ => format!("{}\n\nPlease try again.", err).into(),
 7034                        };
 7035                        window.prompt(
 7036                            PromptLevel::Critical,
 7037                            "Failed to join channel",
 7038                            Some(&detail),
 7039                            &["Ok"],
 7040                        cx)
 7041                    })?
 7042                    .await
 7043                    .ok();
 7044            }
 7045        }
 7046
 7047        // return ok, we showed the error to the user.
 7048        anyhow::Ok(())
 7049    })
 7050}
 7051
 7052pub async fn get_any_active_workspace(
 7053    app_state: Arc<AppState>,
 7054    mut cx: AsyncApp,
 7055) -> anyhow::Result<WindowHandle<Workspace>> {
 7056    // find an existing workspace to focus and show call controls
 7057    let active_window = activate_any_workspace_window(&mut cx);
 7058    if active_window.is_none() {
 7059        cx.update(|cx| Workspace::new_local(vec![], app_state.clone(), None, None, cx))?
 7060            .await?;
 7061    }
 7062    activate_any_workspace_window(&mut cx).context("could not open zed")
 7063}
 7064
 7065fn activate_any_workspace_window(cx: &mut AsyncApp) -> Option<WindowHandle<Workspace>> {
 7066    cx.update(|cx| {
 7067        if let Some(workspace_window) = cx
 7068            .active_window()
 7069            .and_then(|window| window.downcast::<Workspace>())
 7070        {
 7071            return Some(workspace_window);
 7072        }
 7073
 7074        for window in cx.windows() {
 7075            if let Some(workspace_window) = window.downcast::<Workspace>() {
 7076                workspace_window
 7077                    .update(cx, |_, window, _| window.activate_window())
 7078                    .ok();
 7079                return Some(workspace_window);
 7080            }
 7081        }
 7082        None
 7083    })
 7084    .ok()
 7085    .flatten()
 7086}
 7087
 7088pub fn local_workspace_windows(cx: &App) -> Vec<WindowHandle<Workspace>> {
 7089    cx.windows()
 7090        .into_iter()
 7091        .filter_map(|window| window.downcast::<Workspace>())
 7092        .filter(|workspace| {
 7093            workspace
 7094                .read(cx)
 7095                .is_ok_and(|workspace| workspace.project.read(cx).is_local())
 7096        })
 7097        .collect()
 7098}
 7099
 7100#[derive(Default)]
 7101pub struct OpenOptions {
 7102    pub visible: Option<OpenVisible>,
 7103    pub focus: Option<bool>,
 7104    pub open_new_workspace: Option<bool>,
 7105    pub replace_window: Option<WindowHandle<Workspace>>,
 7106    pub env: Option<HashMap<String, String>>,
 7107}
 7108
 7109#[allow(clippy::type_complexity)]
 7110pub fn open_paths(
 7111    abs_paths: &[PathBuf],
 7112    app_state: Arc<AppState>,
 7113    open_options: OpenOptions,
 7114    cx: &mut App,
 7115) -> Task<
 7116    anyhow::Result<(
 7117        WindowHandle<Workspace>,
 7118        Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 7119    )>,
 7120> {
 7121    let abs_paths = abs_paths.to_vec();
 7122    let mut existing = None;
 7123    let mut best_match = None;
 7124    let mut open_visible = OpenVisible::All;
 7125
 7126    cx.spawn(async move |cx| {
 7127        if open_options.open_new_workspace != Some(true) {
 7128            let all_paths = abs_paths.iter().map(|path| app_state.fs.metadata(path));
 7129            let all_metadatas = futures::future::join_all(all_paths)
 7130                .await
 7131                .into_iter()
 7132                .filter_map(|result| result.ok().flatten())
 7133                .collect::<Vec<_>>();
 7134
 7135            cx.update(|cx| {
 7136                for window in local_workspace_windows(&cx) {
 7137                    if let Ok(workspace) = window.read(&cx) {
 7138                        let m = workspace.project.read(&cx).visibility_for_paths(
 7139                            &abs_paths,
 7140                            &all_metadatas,
 7141                            open_options.open_new_workspace == None,
 7142                            cx,
 7143                        );
 7144                        if m > best_match {
 7145                            existing = Some(window);
 7146                            best_match = m;
 7147                        } else if best_match.is_none()
 7148                            && open_options.open_new_workspace == Some(false)
 7149                        {
 7150                            existing = Some(window)
 7151                        }
 7152                    }
 7153                }
 7154            })?;
 7155
 7156            if open_options.open_new_workspace.is_none() && existing.is_none() {
 7157                if all_metadatas.iter().all(|file| !file.is_dir) {
 7158                    cx.update(|cx| {
 7159                        if let Some(window) = cx
 7160                            .active_window()
 7161                            .and_then(|window| window.downcast::<Workspace>())
 7162                        {
 7163                            if let Ok(workspace) = window.read(cx) {
 7164                                let project = workspace.project().read(cx);
 7165                                if project.is_local() && !project.is_via_collab() {
 7166                                    existing = Some(window);
 7167                                    open_visible = OpenVisible::None;
 7168                                    return;
 7169                                }
 7170                            }
 7171                        }
 7172                        for window in local_workspace_windows(cx) {
 7173                            if let Ok(workspace) = window.read(cx) {
 7174                                let project = workspace.project().read(cx);
 7175                                if project.is_via_collab() {
 7176                                    continue;
 7177                                }
 7178                                existing = Some(window);
 7179                                open_visible = OpenVisible::None;
 7180                                break;
 7181                            }
 7182                        }
 7183                    })?;
 7184                }
 7185            }
 7186        }
 7187
 7188        if let Some(existing) = existing {
 7189            let open_task = existing
 7190                .update(cx, |workspace, window, cx| {
 7191                    window.activate_window();
 7192                    workspace.open_paths(
 7193                        abs_paths,
 7194                        OpenOptions {
 7195                            visible: Some(open_visible),
 7196                            ..Default::default()
 7197                        },
 7198                        None,
 7199                        window,
 7200                        cx,
 7201                    )
 7202                })?
 7203                .await;
 7204
 7205            _ = existing.update(cx, |workspace, _, cx| {
 7206                for item in open_task.iter().flatten() {
 7207                    if let Err(e) = item {
 7208                        workspace.show_error(&e, cx);
 7209                    }
 7210                }
 7211            });
 7212
 7213            Ok((existing, open_task))
 7214        } else {
 7215            cx.update(move |cx| {
 7216                Workspace::new_local(
 7217                    abs_paths,
 7218                    app_state.clone(),
 7219                    open_options.replace_window,
 7220                    open_options.env,
 7221                    cx,
 7222                )
 7223            })?
 7224            .await
 7225        }
 7226    })
 7227}
 7228
 7229pub fn open_new(
 7230    open_options: OpenOptions,
 7231    app_state: Arc<AppState>,
 7232    cx: &mut App,
 7233    init: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + 'static + Send,
 7234) -> Task<anyhow::Result<()>> {
 7235    let task = Workspace::new_local(Vec::new(), app_state, None, open_options.env, cx);
 7236    cx.spawn(async move |cx| {
 7237        let (workspace, opened_paths) = task.await?;
 7238        workspace.update(cx, |workspace, window, cx| {
 7239            if opened_paths.is_empty() {
 7240                init(workspace, window, cx)
 7241            }
 7242        })?;
 7243        Ok(())
 7244    })
 7245}
 7246
 7247pub fn create_and_open_local_file(
 7248    path: &'static Path,
 7249    window: &mut Window,
 7250    cx: &mut Context<Workspace>,
 7251    default_content: impl 'static + Send + FnOnce() -> Rope,
 7252) -> Task<Result<Box<dyn ItemHandle>>> {
 7253    cx.spawn_in(window, async move |workspace, cx| {
 7254        let fs = workspace.read_with(cx, |workspace, _| workspace.app_state().fs.clone())?;
 7255        if !fs.is_file(path).await {
 7256            fs.create_file(path, Default::default()).await?;
 7257            fs.save(path, &default_content(), Default::default())
 7258                .await?;
 7259        }
 7260
 7261        let mut items = workspace
 7262            .update_in(cx, |workspace, window, cx| {
 7263                workspace.with_local_workspace(window, cx, |workspace, window, cx| {
 7264                    workspace.open_paths(
 7265                        vec![path.to_path_buf()],
 7266                        OpenOptions {
 7267                            visible: Some(OpenVisible::None),
 7268                            ..Default::default()
 7269                        },
 7270                        None,
 7271                        window,
 7272                        cx,
 7273                    )
 7274                })
 7275            })?
 7276            .await?
 7277            .await;
 7278
 7279        let item = items.pop().flatten();
 7280        item.with_context(|| format!("path {path:?} is not a file"))?
 7281    })
 7282}
 7283
 7284pub fn open_ssh_project_with_new_connection(
 7285    window: WindowHandle<Workspace>,
 7286    connection_options: SshConnectionOptions,
 7287    cancel_rx: oneshot::Receiver<()>,
 7288    delegate: Arc<dyn SshClientDelegate>,
 7289    app_state: Arc<AppState>,
 7290    paths: Vec<PathBuf>,
 7291    cx: &mut App,
 7292) -> Task<Result<()>> {
 7293    cx.spawn(async move |cx| {
 7294        let (serialized_ssh_project, workspace_id, serialized_workspace) =
 7295            serialize_ssh_project(connection_options.clone(), paths.clone(), &cx).await?;
 7296
 7297        let session = match cx
 7298            .update(|cx| {
 7299                remote::SshRemoteClient::new(
 7300                    ConnectionIdentifier::Workspace(workspace_id.0),
 7301                    connection_options,
 7302                    cancel_rx,
 7303                    delegate,
 7304                    cx,
 7305                )
 7306            })?
 7307            .await?
 7308        {
 7309            Some(result) => result,
 7310            None => return Ok(()),
 7311        };
 7312
 7313        let project = cx.update(|cx| {
 7314            project::Project::ssh(
 7315                session,
 7316                app_state.client.clone(),
 7317                app_state.node_runtime.clone(),
 7318                app_state.user_store.clone(),
 7319                app_state.languages.clone(),
 7320                app_state.fs.clone(),
 7321                cx,
 7322            )
 7323        })?;
 7324
 7325        open_ssh_project_inner(
 7326            project,
 7327            paths,
 7328            serialized_ssh_project,
 7329            workspace_id,
 7330            serialized_workspace,
 7331            app_state,
 7332            window,
 7333            cx,
 7334        )
 7335        .await
 7336    })
 7337}
 7338
 7339pub fn open_ssh_project_with_existing_connection(
 7340    connection_options: SshConnectionOptions,
 7341    project: Entity<Project>,
 7342    paths: Vec<PathBuf>,
 7343    app_state: Arc<AppState>,
 7344    window: WindowHandle<Workspace>,
 7345    cx: &mut AsyncApp,
 7346) -> Task<Result<()>> {
 7347    cx.spawn(async move |cx| {
 7348        let (serialized_ssh_project, workspace_id, serialized_workspace) =
 7349            serialize_ssh_project(connection_options.clone(), paths.clone(), &cx).await?;
 7350
 7351        open_ssh_project_inner(
 7352            project,
 7353            paths,
 7354            serialized_ssh_project,
 7355            workspace_id,
 7356            serialized_workspace,
 7357            app_state,
 7358            window,
 7359            cx,
 7360        )
 7361        .await
 7362    })
 7363}
 7364
 7365async fn open_ssh_project_inner(
 7366    project: Entity<Project>,
 7367    paths: Vec<PathBuf>,
 7368    serialized_ssh_project: SerializedSshProject,
 7369    workspace_id: WorkspaceId,
 7370    serialized_workspace: Option<SerializedWorkspace>,
 7371    app_state: Arc<AppState>,
 7372    window: WindowHandle<Workspace>,
 7373    cx: &mut AsyncApp,
 7374) -> Result<()> {
 7375    let toolchains = DB.toolchains(workspace_id).await?;
 7376    for (toolchain, worktree_id, path) in toolchains {
 7377        project
 7378            .update(cx, |this, cx| {
 7379                this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 7380            })?
 7381            .await;
 7382    }
 7383    let mut project_paths_to_open = vec![];
 7384    let mut project_path_errors = vec![];
 7385
 7386    for path in paths {
 7387        let result = cx
 7388            .update(|cx| Workspace::project_path_for_path(project.clone(), &path, true, cx))?
 7389            .await;
 7390        match result {
 7391            Ok((_, project_path)) => {
 7392                project_paths_to_open.push((path.clone(), Some(project_path)));
 7393            }
 7394            Err(error) => {
 7395                project_path_errors.push(error);
 7396            }
 7397        };
 7398    }
 7399
 7400    if project_paths_to_open.is_empty() {
 7401        return Err(project_path_errors.pop().context("no paths given")?);
 7402    }
 7403
 7404    if let Some(detach_session_task) = window
 7405        .update(cx, |_workspace, window, cx| {
 7406            cx.spawn_in(window, async move |this, cx| {
 7407                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))
 7408            })
 7409        })
 7410        .ok()
 7411    {
 7412        detach_session_task.await.ok();
 7413    }
 7414
 7415    cx.update_window(window.into(), |_, window, cx| {
 7416        window.replace_root(cx, |window, cx| {
 7417            telemetry::event!("SSH Project Opened");
 7418
 7419            let mut workspace =
 7420                Workspace::new(Some(workspace_id), project, app_state.clone(), window, cx);
 7421            workspace.set_serialized_ssh_project(serialized_ssh_project);
 7422            workspace.update_history(cx);
 7423
 7424            if let Some(ref serialized) = serialized_workspace {
 7425                workspace.centered_layout = serialized.centered_layout;
 7426            }
 7427
 7428            workspace
 7429        });
 7430    })?;
 7431
 7432    window
 7433        .update(cx, |_, window, cx| {
 7434            window.activate_window();
 7435            open_items(serialized_workspace, project_paths_to_open, window, cx)
 7436        })?
 7437        .await?;
 7438
 7439    window.update(cx, |workspace, _, cx| {
 7440        for error in project_path_errors {
 7441            if error.error_code() == proto::ErrorCode::DevServerProjectPathDoesNotExist {
 7442                if let Some(path) = error.error_tag("path") {
 7443                    workspace.show_error(&anyhow!("'{path}' does not exist"), cx)
 7444                }
 7445            } else {
 7446                workspace.show_error(&error, cx)
 7447            }
 7448        }
 7449    })?;
 7450
 7451    Ok(())
 7452}
 7453
 7454fn serialize_ssh_project(
 7455    connection_options: SshConnectionOptions,
 7456    paths: Vec<PathBuf>,
 7457    cx: &AsyncApp,
 7458) -> Task<
 7459    Result<(
 7460        SerializedSshProject,
 7461        WorkspaceId,
 7462        Option<SerializedWorkspace>,
 7463    )>,
 7464> {
 7465    cx.background_spawn(async move {
 7466        let serialized_ssh_project = persistence::DB
 7467            .get_or_create_ssh_project(
 7468                connection_options.host.clone(),
 7469                connection_options.port,
 7470                paths
 7471                    .iter()
 7472                    .map(|path| path.to_string_lossy().to_string())
 7473                    .collect::<Vec<_>>(),
 7474                connection_options.username.clone(),
 7475            )
 7476            .await?;
 7477
 7478        let serialized_workspace =
 7479            persistence::DB.workspace_for_ssh_project(&serialized_ssh_project);
 7480
 7481        let workspace_id = if let Some(workspace_id) =
 7482            serialized_workspace.as_ref().map(|workspace| workspace.id)
 7483        {
 7484            workspace_id
 7485        } else {
 7486            persistence::DB.next_id().await?
 7487        };
 7488
 7489        Ok((serialized_ssh_project, workspace_id, serialized_workspace))
 7490    })
 7491}
 7492
 7493pub fn join_in_room_project(
 7494    project_id: u64,
 7495    follow_user_id: u64,
 7496    app_state: Arc<AppState>,
 7497    cx: &mut App,
 7498) -> Task<Result<()>> {
 7499    let windows = cx.windows();
 7500    cx.spawn(async move |cx| {
 7501        let existing_workspace = windows.into_iter().find_map(|window_handle| {
 7502            window_handle
 7503                .downcast::<Workspace>()
 7504                .and_then(|window_handle| {
 7505                    window_handle
 7506                        .update(cx, |workspace, _window, cx| {
 7507                            if workspace.project().read(cx).remote_id() == Some(project_id) {
 7508                                Some(window_handle)
 7509                            } else {
 7510                                None
 7511                            }
 7512                        })
 7513                        .unwrap_or(None)
 7514                })
 7515        });
 7516
 7517        let workspace = if let Some(existing_workspace) = existing_workspace {
 7518            existing_workspace
 7519        } else {
 7520            let active_call = cx.update(|cx| ActiveCall::global(cx))?;
 7521            let room = active_call
 7522                .read_with(cx, |call, _| call.room().cloned())?
 7523                .context("not in a call")?;
 7524            let project = room
 7525                .update(cx, |room, cx| {
 7526                    room.join_project(
 7527                        project_id,
 7528                        app_state.languages.clone(),
 7529                        app_state.fs.clone(),
 7530                        cx,
 7531                    )
 7532                })?
 7533                .await?;
 7534
 7535            let window_bounds_override = window_bounds_env_override();
 7536            cx.update(|cx| {
 7537                let mut options = (app_state.build_window_options)(None, cx);
 7538                options.window_bounds = window_bounds_override.map(WindowBounds::Windowed);
 7539                cx.open_window(options, |window, cx| {
 7540                    cx.new(|cx| {
 7541                        Workspace::new(Default::default(), project, app_state.clone(), window, cx)
 7542                    })
 7543                })
 7544            })??
 7545        };
 7546
 7547        workspace.update(cx, |workspace, window, cx| {
 7548            cx.activate(true);
 7549            window.activate_window();
 7550
 7551            if let Some(room) = ActiveCall::global(cx).read(cx).room().cloned() {
 7552                let follow_peer_id = room
 7553                    .read(cx)
 7554                    .remote_participants()
 7555                    .iter()
 7556                    .find(|(_, participant)| participant.user.id == follow_user_id)
 7557                    .map(|(_, p)| p.peer_id)
 7558                    .or_else(|| {
 7559                        // If we couldn't follow the given user, follow the host instead.
 7560                        let collaborator = workspace
 7561                            .project()
 7562                            .read(cx)
 7563                            .collaborators()
 7564                            .values()
 7565                            .find(|collaborator| collaborator.is_host)?;
 7566                        Some(collaborator.peer_id)
 7567                    });
 7568
 7569                if let Some(follow_peer_id) = follow_peer_id {
 7570                    workspace.follow(follow_peer_id, window, cx);
 7571                }
 7572            }
 7573        })?;
 7574
 7575        anyhow::Ok(())
 7576    })
 7577}
 7578
 7579pub fn reload(reload: &Reload, cx: &mut App) {
 7580    let should_confirm = WorkspaceSettings::get_global(cx).confirm_quit;
 7581    let mut workspace_windows = cx
 7582        .windows()
 7583        .into_iter()
 7584        .filter_map(|window| window.downcast::<Workspace>())
 7585        .collect::<Vec<_>>();
 7586
 7587    // If multiple windows have unsaved changes, and need a save prompt,
 7588    // prompt in the active window before switching to a different window.
 7589    workspace_windows.sort_by_key(|window| window.is_active(cx) == Some(false));
 7590
 7591    let mut prompt = None;
 7592    if let (true, Some(window)) = (should_confirm, workspace_windows.first()) {
 7593        prompt = window
 7594            .update(cx, |_, window, cx| {
 7595                window.prompt(
 7596                    PromptLevel::Info,
 7597                    "Are you sure you want to restart?",
 7598                    None,
 7599                    &["Restart", "Cancel"],
 7600                    cx,
 7601                )
 7602            })
 7603            .ok();
 7604    }
 7605
 7606    let binary_path = reload.binary_path.clone();
 7607    cx.spawn(async move |cx| {
 7608        if let Some(prompt) = prompt {
 7609            let answer = prompt.await?;
 7610            if answer != 0 {
 7611                return Ok(());
 7612            }
 7613        }
 7614
 7615        // If the user cancels any save prompt, then keep the app open.
 7616        for window in workspace_windows {
 7617            if let Ok(should_close) = window.update(cx, |workspace, window, cx| {
 7618                workspace.prepare_to_close(CloseIntent::Quit, window, cx)
 7619            }) {
 7620                if !should_close.await? {
 7621                    return Ok(());
 7622                }
 7623            }
 7624        }
 7625
 7626        cx.update(|cx| cx.restart(binary_path))
 7627    })
 7628    .detach_and_log_err(cx);
 7629}
 7630
 7631fn parse_pixel_position_env_var(value: &str) -> Option<Point<Pixels>> {
 7632    let mut parts = value.split(',');
 7633    let x: usize = parts.next()?.parse().ok()?;
 7634    let y: usize = parts.next()?.parse().ok()?;
 7635    Some(point(px(x as f32), px(y as f32)))
 7636}
 7637
 7638fn parse_pixel_size_env_var(value: &str) -> Option<Size<Pixels>> {
 7639    let mut parts = value.split(',');
 7640    let width: usize = parts.next()?.parse().ok()?;
 7641    let height: usize = parts.next()?.parse().ok()?;
 7642    Some(size(px(width as f32), px(height as f32)))
 7643}
 7644
 7645/// Add client-side decorations (rounded corners, shadows, resize handling) when appropriate.
 7646pub fn client_side_decorations(
 7647    element: impl IntoElement,
 7648    window: &mut Window,
 7649    cx: &mut App,
 7650) -> Stateful<Div> {
 7651    const BORDER_SIZE: Pixels = px(1.0);
 7652    let decorations = window.window_decorations();
 7653
 7654    match decorations {
 7655        Decorations::Client { .. } => window.set_client_inset(theme::CLIENT_SIDE_DECORATION_SHADOW),
 7656        Decorations::Server { .. } => window.set_client_inset(px(0.0)),
 7657    }
 7658
 7659    struct GlobalResizeEdge(ResizeEdge);
 7660    impl Global for GlobalResizeEdge {}
 7661
 7662    div()
 7663        .id("window-backdrop")
 7664        .bg(transparent_black())
 7665        .map(|div| match decorations {
 7666            Decorations::Server => div,
 7667            Decorations::Client { tiling, .. } => div
 7668                .when(!(tiling.top || tiling.right), |div| {
 7669                    div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7670                })
 7671                .when(!(tiling.top || tiling.left), |div| {
 7672                    div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7673                })
 7674                .when(!(tiling.bottom || tiling.right), |div| {
 7675                    div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7676                })
 7677                .when(!(tiling.bottom || tiling.left), |div| {
 7678                    div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7679                })
 7680                .when(!tiling.top, |div| {
 7681                    div.pt(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7682                })
 7683                .when(!tiling.bottom, |div| {
 7684                    div.pb(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7685                })
 7686                .when(!tiling.left, |div| {
 7687                    div.pl(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7688                })
 7689                .when(!tiling.right, |div| {
 7690                    div.pr(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7691                })
 7692                .on_mouse_move(move |e, window, cx| {
 7693                    let size = window.window_bounds().get_bounds().size;
 7694                    let pos = e.position;
 7695
 7696                    let new_edge =
 7697                        resize_edge(pos, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling);
 7698
 7699                    let edge = cx.try_global::<GlobalResizeEdge>();
 7700                    if new_edge != edge.map(|edge| edge.0) {
 7701                        window
 7702                            .window_handle()
 7703                            .update(cx, |workspace, _, cx| {
 7704                                cx.notify(workspace.entity_id());
 7705                            })
 7706                            .ok();
 7707                    }
 7708                })
 7709                .on_mouse_down(MouseButton::Left, move |e, window, _| {
 7710                    let size = window.window_bounds().get_bounds().size;
 7711                    let pos = e.position;
 7712
 7713                    let edge = match resize_edge(
 7714                        pos,
 7715                        theme::CLIENT_SIDE_DECORATION_SHADOW,
 7716                        size,
 7717                        tiling,
 7718                    ) {
 7719                        Some(value) => value,
 7720                        None => return,
 7721                    };
 7722
 7723                    window.start_window_resize(edge);
 7724                }),
 7725        })
 7726        .size_full()
 7727        .child(
 7728            div()
 7729                .cursor(CursorStyle::Arrow)
 7730                .map(|div| match decorations {
 7731                    Decorations::Server => div,
 7732                    Decorations::Client { tiling } => div
 7733                        .border_color(cx.theme().colors().border)
 7734                        .when(!(tiling.top || tiling.right), |div| {
 7735                            div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7736                        })
 7737                        .when(!(tiling.top || tiling.left), |div| {
 7738                            div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7739                        })
 7740                        .when(!(tiling.bottom || tiling.right), |div| {
 7741                            div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7742                        })
 7743                        .when(!(tiling.bottom || tiling.left), |div| {
 7744                            div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7745                        })
 7746                        .when(!tiling.top, |div| div.border_t(BORDER_SIZE))
 7747                        .when(!tiling.bottom, |div| div.border_b(BORDER_SIZE))
 7748                        .when(!tiling.left, |div| div.border_l(BORDER_SIZE))
 7749                        .when(!tiling.right, |div| div.border_r(BORDER_SIZE))
 7750                        .when(!tiling.is_tiled(), |div| {
 7751                            div.shadow(vec![gpui::BoxShadow {
 7752                                color: Hsla {
 7753                                    h: 0.,
 7754                                    s: 0.,
 7755                                    l: 0.,
 7756                                    a: 0.4,
 7757                                },
 7758                                blur_radius: theme::CLIENT_SIDE_DECORATION_SHADOW / 2.,
 7759                                spread_radius: px(0.),
 7760                                offset: point(px(0.0), px(0.0)),
 7761                            }])
 7762                        }),
 7763                })
 7764                .on_mouse_move(|_e, _, cx| {
 7765                    cx.stop_propagation();
 7766                })
 7767                .size_full()
 7768                .child(element),
 7769        )
 7770        .map(|div| match decorations {
 7771            Decorations::Server => div,
 7772            Decorations::Client { tiling, .. } => div.child(
 7773                canvas(
 7774                    |_bounds, window, _| {
 7775                        window.insert_hitbox(
 7776                            Bounds::new(
 7777                                point(px(0.0), px(0.0)),
 7778                                window.window_bounds().get_bounds().size,
 7779                            ),
 7780                            HitboxBehavior::Normal,
 7781                        )
 7782                    },
 7783                    move |_bounds, hitbox, window, cx| {
 7784                        let mouse = window.mouse_position();
 7785                        let size = window.window_bounds().get_bounds().size;
 7786                        let Some(edge) =
 7787                            resize_edge(mouse, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling)
 7788                        else {
 7789                            return;
 7790                        };
 7791                        cx.set_global(GlobalResizeEdge(edge));
 7792                        window.set_cursor_style(
 7793                            match edge {
 7794                                ResizeEdge::Top | ResizeEdge::Bottom => CursorStyle::ResizeUpDown,
 7795                                ResizeEdge::Left | ResizeEdge::Right => {
 7796                                    CursorStyle::ResizeLeftRight
 7797                                }
 7798                                ResizeEdge::TopLeft | ResizeEdge::BottomRight => {
 7799                                    CursorStyle::ResizeUpLeftDownRight
 7800                                }
 7801                                ResizeEdge::TopRight | ResizeEdge::BottomLeft => {
 7802                                    CursorStyle::ResizeUpRightDownLeft
 7803                                }
 7804                            },
 7805                            &hitbox,
 7806                        );
 7807                    },
 7808                )
 7809                .size_full()
 7810                .absolute(),
 7811            ),
 7812        })
 7813}
 7814
 7815fn resize_edge(
 7816    pos: Point<Pixels>,
 7817    shadow_size: Pixels,
 7818    window_size: Size<Pixels>,
 7819    tiling: Tiling,
 7820) -> Option<ResizeEdge> {
 7821    let bounds = Bounds::new(Point::default(), window_size).inset(shadow_size * 1.5);
 7822    if bounds.contains(&pos) {
 7823        return None;
 7824    }
 7825
 7826    let corner_size = size(shadow_size * 1.5, shadow_size * 1.5);
 7827    let top_left_bounds = Bounds::new(Point::new(px(0.), px(0.)), corner_size);
 7828    if !tiling.top && top_left_bounds.contains(&pos) {
 7829        return Some(ResizeEdge::TopLeft);
 7830    }
 7831
 7832    let top_right_bounds = Bounds::new(
 7833        Point::new(window_size.width - corner_size.width, px(0.)),
 7834        corner_size,
 7835    );
 7836    if !tiling.top && top_right_bounds.contains(&pos) {
 7837        return Some(ResizeEdge::TopRight);
 7838    }
 7839
 7840    let bottom_left_bounds = Bounds::new(
 7841        Point::new(px(0.), window_size.height - corner_size.height),
 7842        corner_size,
 7843    );
 7844    if !tiling.bottom && bottom_left_bounds.contains(&pos) {
 7845        return Some(ResizeEdge::BottomLeft);
 7846    }
 7847
 7848    let bottom_right_bounds = Bounds::new(
 7849        Point::new(
 7850            window_size.width - corner_size.width,
 7851            window_size.height - corner_size.height,
 7852        ),
 7853        corner_size,
 7854    );
 7855    if !tiling.bottom && bottom_right_bounds.contains(&pos) {
 7856        return Some(ResizeEdge::BottomRight);
 7857    }
 7858
 7859    if !tiling.top && pos.y < shadow_size {
 7860        Some(ResizeEdge::Top)
 7861    } else if !tiling.bottom && pos.y > window_size.height - shadow_size {
 7862        Some(ResizeEdge::Bottom)
 7863    } else if !tiling.left && pos.x < shadow_size {
 7864        Some(ResizeEdge::Left)
 7865    } else if !tiling.right && pos.x > window_size.width - shadow_size {
 7866        Some(ResizeEdge::Right)
 7867    } else {
 7868        None
 7869    }
 7870}
 7871
 7872fn join_pane_into_active(
 7873    active_pane: &Entity<Pane>,
 7874    pane: &Entity<Pane>,
 7875    window: &mut Window,
 7876    cx: &mut App,
 7877) {
 7878    if pane == active_pane {
 7879        return;
 7880    } else if pane.read(cx).items_len() == 0 {
 7881        pane.update(cx, |_, cx| {
 7882            cx.emit(pane::Event::Remove {
 7883                focus_on_pane: None,
 7884            });
 7885        })
 7886    } else {
 7887        move_all_items(pane, active_pane, window, cx);
 7888    }
 7889}
 7890
 7891fn move_all_items(
 7892    from_pane: &Entity<Pane>,
 7893    to_pane: &Entity<Pane>,
 7894    window: &mut Window,
 7895    cx: &mut App,
 7896) {
 7897    let destination_is_different = from_pane != to_pane;
 7898    let mut moved_items = 0;
 7899    for (item_ix, item_handle) in from_pane
 7900        .read(cx)
 7901        .items()
 7902        .enumerate()
 7903        .map(|(ix, item)| (ix, item.clone()))
 7904        .collect::<Vec<_>>()
 7905    {
 7906        let ix = item_ix - moved_items;
 7907        if destination_is_different {
 7908            // Close item from previous pane
 7909            from_pane.update(cx, |source, cx| {
 7910                source.remove_item_and_focus_on_pane(ix, false, to_pane.clone(), window, cx);
 7911            });
 7912            moved_items += 1;
 7913        }
 7914
 7915        // This automatically removes duplicate items in the pane
 7916        to_pane.update(cx, |destination, cx| {
 7917            destination.add_item(item_handle, true, true, None, window, cx);
 7918            window.focus(&destination.focus_handle(cx))
 7919        });
 7920    }
 7921}
 7922
 7923pub fn move_item(
 7924    source: &Entity<Pane>,
 7925    destination: &Entity<Pane>,
 7926    item_id_to_move: EntityId,
 7927    destination_index: usize,
 7928    activate: bool,
 7929    window: &mut Window,
 7930    cx: &mut App,
 7931) {
 7932    let Some((item_ix, item_handle)) = source
 7933        .read(cx)
 7934        .items()
 7935        .enumerate()
 7936        .find(|(_, item_handle)| item_handle.item_id() == item_id_to_move)
 7937        .map(|(ix, item)| (ix, item.clone()))
 7938    else {
 7939        // Tab was closed during drag
 7940        return;
 7941    };
 7942
 7943    if source != destination {
 7944        // Close item from previous pane
 7945        source.update(cx, |source, cx| {
 7946            source.remove_item_and_focus_on_pane(item_ix, false, destination.clone(), window, cx);
 7947        });
 7948    }
 7949
 7950    // This automatically removes duplicate items in the pane
 7951    destination.update(cx, |destination, cx| {
 7952        destination.add_item_inner(
 7953            item_handle,
 7954            activate,
 7955            activate,
 7956            activate,
 7957            Some(destination_index),
 7958            window,
 7959            cx,
 7960        );
 7961        if activate {
 7962            window.focus(&destination.focus_handle(cx))
 7963        }
 7964    });
 7965}
 7966
 7967pub fn move_active_item(
 7968    source: &Entity<Pane>,
 7969    destination: &Entity<Pane>,
 7970    focus_destination: bool,
 7971    close_if_empty: bool,
 7972    window: &mut Window,
 7973    cx: &mut App,
 7974) {
 7975    if source == destination {
 7976        return;
 7977    }
 7978    let Some(active_item) = source.read(cx).active_item() else {
 7979        return;
 7980    };
 7981    source.update(cx, |source_pane, cx| {
 7982        let item_id = active_item.item_id();
 7983        source_pane.remove_item(item_id, false, close_if_empty, window, cx);
 7984        destination.update(cx, |target_pane, cx| {
 7985            target_pane.add_item(
 7986                active_item,
 7987                focus_destination,
 7988                focus_destination,
 7989                Some(target_pane.items_len()),
 7990                window,
 7991                cx,
 7992            );
 7993        });
 7994    });
 7995}
 7996
 7997pub fn clone_active_item(
 7998    workspace_id: Option<WorkspaceId>,
 7999    source: &Entity<Pane>,
 8000    destination: &Entity<Pane>,
 8001    focus_destination: bool,
 8002    window: &mut Window,
 8003    cx: &mut App,
 8004) {
 8005    if source == destination {
 8006        return;
 8007    }
 8008    let Some(active_item) = source.read(cx).active_item() else {
 8009        return;
 8010    };
 8011    destination.update(cx, |target_pane, cx| {
 8012        let Some(clone) = active_item.clone_on_split(workspace_id, window, cx) else {
 8013            return;
 8014        };
 8015        target_pane.add_item(
 8016            clone,
 8017            focus_destination,
 8018            focus_destination,
 8019            Some(target_pane.items_len()),
 8020            window,
 8021            cx,
 8022        );
 8023    });
 8024}
 8025
 8026#[derive(Debug)]
 8027pub struct WorkspacePosition {
 8028    pub window_bounds: Option<WindowBounds>,
 8029    pub display: Option<Uuid>,
 8030    pub centered_layout: bool,
 8031}
 8032
 8033pub fn ssh_workspace_position_from_db(
 8034    host: String,
 8035    port: Option<u16>,
 8036    user: Option<String>,
 8037    paths_to_open: &[PathBuf],
 8038    cx: &App,
 8039) -> Task<Result<WorkspacePosition>> {
 8040    let paths = paths_to_open
 8041        .iter()
 8042        .map(|path| path.to_string_lossy().to_string())
 8043        .collect::<Vec<_>>();
 8044
 8045    cx.background_spawn(async move {
 8046        let serialized_ssh_project = persistence::DB
 8047            .get_or_create_ssh_project(host, port, paths, user)
 8048            .await
 8049            .context("fetching serialized ssh project")?;
 8050        let serialized_workspace =
 8051            persistence::DB.workspace_for_ssh_project(&serialized_ssh_project);
 8052
 8053        let (window_bounds, display) = if let Some(bounds) = window_bounds_env_override() {
 8054            (Some(WindowBounds::Windowed(bounds)), None)
 8055        } else {
 8056            let restorable_bounds = serialized_workspace
 8057                .as_ref()
 8058                .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 8059                .or_else(|| {
 8060                    let (display, window_bounds) = DB.last_window().log_err()?;
 8061                    Some((display?, window_bounds?))
 8062                });
 8063
 8064            if let Some((serialized_display, serialized_status)) = restorable_bounds {
 8065                (Some(serialized_status.0), Some(serialized_display))
 8066            } else {
 8067                (None, None)
 8068            }
 8069        };
 8070
 8071        let centered_layout = serialized_workspace
 8072            .as_ref()
 8073            .map(|w| w.centered_layout)
 8074            .unwrap_or(false);
 8075
 8076        Ok(WorkspacePosition {
 8077            window_bounds,
 8078            display,
 8079            centered_layout,
 8080        })
 8081    })
 8082}
 8083
 8084pub fn with_active_or_new_workspace(
 8085    cx: &mut App,
 8086    f: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send + 'static,
 8087) {
 8088    match cx.active_window().and_then(|w| w.downcast::<Workspace>()) {
 8089        Some(workspace) => {
 8090            cx.defer(move |cx| {
 8091                workspace
 8092                    .update(cx, |workspace, window, cx| f(workspace, window, cx))
 8093                    .log_err();
 8094            });
 8095        }
 8096        None => {
 8097            let app_state = AppState::global(cx);
 8098            if let Some(app_state) = app_state.upgrade() {
 8099                open_new(
 8100                    OpenOptions::default(),
 8101                    app_state,
 8102                    cx,
 8103                    move |workspace, window, cx| f(workspace, window, cx),
 8104                )
 8105                .detach_and_log_err(cx);
 8106            }
 8107        }
 8108    }
 8109}
 8110
 8111#[cfg(test)]
 8112mod tests {
 8113    use std::{cell::RefCell, rc::Rc};
 8114
 8115    use super::*;
 8116    use crate::{
 8117        dock::{PanelEvent, test::TestPanel},
 8118        item::{
 8119            ItemEvent,
 8120            test::{TestItem, TestProjectItem},
 8121        },
 8122    };
 8123    use fs::FakeFs;
 8124    use gpui::{
 8125        DismissEvent, Empty, EventEmitter, FocusHandle, Focusable, Render, TestAppContext,
 8126        UpdateGlobal, VisualTestContext, px,
 8127    };
 8128    use project::{Project, ProjectEntryId};
 8129    use serde_json::json;
 8130    use settings::SettingsStore;
 8131
 8132    #[gpui::test]
 8133    async fn test_tab_disambiguation(cx: &mut TestAppContext) {
 8134        init_test(cx);
 8135
 8136        let fs = FakeFs::new(cx.executor());
 8137        let project = Project::test(fs, [], cx).await;
 8138        let (workspace, cx) =
 8139            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8140
 8141        // Adding an item with no ambiguity renders the tab without detail.
 8142        let item1 = cx.new(|cx| {
 8143            let mut item = TestItem::new(cx);
 8144            item.tab_descriptions = Some(vec!["c", "b1/c", "a/b1/c"]);
 8145            item
 8146        });
 8147        workspace.update_in(cx, |workspace, window, cx| {
 8148            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8149        });
 8150        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(0)));
 8151
 8152        // Adding an item that creates ambiguity increases the level of detail on
 8153        // both tabs.
 8154        let item2 = cx.new_window_entity(|_window, cx| {
 8155            let mut item = TestItem::new(cx);
 8156            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8157            item
 8158        });
 8159        workspace.update_in(cx, |workspace, window, cx| {
 8160            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8161        });
 8162        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8163        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8164
 8165        // Adding an item that creates ambiguity increases the level of detail only
 8166        // on the ambiguous tabs. In this case, the ambiguity can't be resolved so
 8167        // we stop at the highest detail available.
 8168        let item3 = cx.new(|cx| {
 8169            let mut item = TestItem::new(cx);
 8170            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8171            item
 8172        });
 8173        workspace.update_in(cx, |workspace, window, cx| {
 8174            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8175        });
 8176        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8177        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8178        item3.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8179    }
 8180
 8181    #[gpui::test]
 8182    async fn test_tracking_active_path(cx: &mut TestAppContext) {
 8183        init_test(cx);
 8184
 8185        let fs = FakeFs::new(cx.executor());
 8186        fs.insert_tree(
 8187            "/root1",
 8188            json!({
 8189                "one.txt": "",
 8190                "two.txt": "",
 8191            }),
 8192        )
 8193        .await;
 8194        fs.insert_tree(
 8195            "/root2",
 8196            json!({
 8197                "three.txt": "",
 8198            }),
 8199        )
 8200        .await;
 8201
 8202        let project = Project::test(fs, ["root1".as_ref()], cx).await;
 8203        let (workspace, cx) =
 8204            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8205        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8206        let worktree_id = project.update(cx, |project, cx| {
 8207            project.worktrees(cx).next().unwrap().read(cx).id()
 8208        });
 8209
 8210        let item1 = cx.new(|cx| {
 8211            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
 8212        });
 8213        let item2 = cx.new(|cx| {
 8214            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "two.txt", cx)])
 8215        });
 8216
 8217        // Add an item to an empty pane
 8218        workspace.update_in(cx, |workspace, window, cx| {
 8219            workspace.add_item_to_active_pane(Box::new(item1), None, true, window, cx)
 8220        });
 8221        project.update(cx, |project, cx| {
 8222            assert_eq!(
 8223                project.active_entry(),
 8224                project
 8225                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
 8226                    .map(|e| e.id)
 8227            );
 8228        });
 8229        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8230
 8231        // Add a second item to a non-empty pane
 8232        workspace.update_in(cx, |workspace, window, cx| {
 8233            workspace.add_item_to_active_pane(Box::new(item2), None, true, window, cx)
 8234        });
 8235        assert_eq!(cx.window_title().as_deref(), Some("root1 — two.txt"));
 8236        project.update(cx, |project, cx| {
 8237            assert_eq!(
 8238                project.active_entry(),
 8239                project
 8240                    .entry_for_path(&(worktree_id, "two.txt").into(), cx)
 8241                    .map(|e| e.id)
 8242            );
 8243        });
 8244
 8245        // Close the active item
 8246        pane.update_in(cx, |pane, window, cx| {
 8247            pane.close_active_item(&Default::default(), window, cx)
 8248        })
 8249        .await
 8250        .unwrap();
 8251        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8252        project.update(cx, |project, cx| {
 8253            assert_eq!(
 8254                project.active_entry(),
 8255                project
 8256                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
 8257                    .map(|e| e.id)
 8258            );
 8259        });
 8260
 8261        // Add a project folder
 8262        project
 8263            .update(cx, |project, cx| {
 8264                project.find_or_create_worktree("root2", true, cx)
 8265            })
 8266            .await
 8267            .unwrap();
 8268        assert_eq!(cx.window_title().as_deref(), Some("root1, root2 — one.txt"));
 8269
 8270        // Remove a project folder
 8271        project.update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
 8272        assert_eq!(cx.window_title().as_deref(), Some("root2 — one.txt"));
 8273    }
 8274
 8275    #[gpui::test]
 8276    async fn test_close_window(cx: &mut TestAppContext) {
 8277        init_test(cx);
 8278
 8279        let fs = FakeFs::new(cx.executor());
 8280        fs.insert_tree("/root", json!({ "one": "" })).await;
 8281
 8282        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8283        let (workspace, cx) =
 8284            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8285
 8286        // When there are no dirty items, there's nothing to do.
 8287        let item1 = cx.new(TestItem::new);
 8288        workspace.update_in(cx, |w, window, cx| {
 8289            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx)
 8290        });
 8291        let task = workspace.update_in(cx, |w, window, cx| {
 8292            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8293        });
 8294        assert!(task.await.unwrap());
 8295
 8296        // When there are dirty untitled items, prompt to save each one. If the user
 8297        // cancels any prompt, then abort.
 8298        let item2 = cx.new(|cx| TestItem::new(cx).with_dirty(true));
 8299        let item3 = cx.new(|cx| {
 8300            TestItem::new(cx)
 8301                .with_dirty(true)
 8302                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8303        });
 8304        workspace.update_in(cx, |w, window, cx| {
 8305            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8306            w.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8307        });
 8308        let task = workspace.update_in(cx, |w, window, cx| {
 8309            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8310        });
 8311        cx.executor().run_until_parked();
 8312        cx.simulate_prompt_answer("Cancel"); // cancel save all
 8313        cx.executor().run_until_parked();
 8314        assert!(!cx.has_pending_prompt());
 8315        assert!(!task.await.unwrap());
 8316    }
 8317
 8318    #[gpui::test]
 8319    async fn test_close_window_with_serializable_items(cx: &mut TestAppContext) {
 8320        init_test(cx);
 8321
 8322        // Register TestItem as a serializable item
 8323        cx.update(|cx| {
 8324            register_serializable_item::<TestItem>(cx);
 8325        });
 8326
 8327        let fs = FakeFs::new(cx.executor());
 8328        fs.insert_tree("/root", json!({ "one": "" })).await;
 8329
 8330        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8331        let (workspace, cx) =
 8332            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8333
 8334        // When there are dirty untitled items, but they can serialize, then there is no prompt.
 8335        let item1 = cx.new(|cx| {
 8336            TestItem::new(cx)
 8337                .with_dirty(true)
 8338                .with_serialize(|| Some(Task::ready(Ok(()))))
 8339        });
 8340        let item2 = cx.new(|cx| {
 8341            TestItem::new(cx)
 8342                .with_dirty(true)
 8343                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8344                .with_serialize(|| Some(Task::ready(Ok(()))))
 8345        });
 8346        workspace.update_in(cx, |w, window, cx| {
 8347            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8348            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8349        });
 8350        let task = workspace.update_in(cx, |w, window, cx| {
 8351            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8352        });
 8353        assert!(task.await.unwrap());
 8354    }
 8355
 8356    #[gpui::test]
 8357    async fn test_close_pane_items(cx: &mut TestAppContext) {
 8358        init_test(cx);
 8359
 8360        let fs = FakeFs::new(cx.executor());
 8361
 8362        let project = Project::test(fs, None, cx).await;
 8363        let (workspace, cx) =
 8364            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8365
 8366        let item1 = cx.new(|cx| {
 8367            TestItem::new(cx)
 8368                .with_dirty(true)
 8369                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 8370        });
 8371        let item2 = cx.new(|cx| {
 8372            TestItem::new(cx)
 8373                .with_dirty(true)
 8374                .with_conflict(true)
 8375                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 8376        });
 8377        let item3 = cx.new(|cx| {
 8378            TestItem::new(cx)
 8379                .with_dirty(true)
 8380                .with_conflict(true)
 8381                .with_project_items(&[dirty_project_item(3, "3.txt", cx)])
 8382        });
 8383        let item4 = cx.new(|cx| {
 8384            TestItem::new(cx).with_dirty(true).with_project_items(&[{
 8385                let project_item = TestProjectItem::new_untitled(cx);
 8386                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8387                project_item
 8388            }])
 8389        });
 8390        let pane = workspace.update_in(cx, |workspace, window, cx| {
 8391            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8392            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8393            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8394            workspace.add_item_to_active_pane(Box::new(item4.clone()), None, true, window, cx);
 8395            workspace.active_pane().clone()
 8396        });
 8397
 8398        let close_items = pane.update_in(cx, |pane, window, cx| {
 8399            pane.activate_item(1, true, true, window, cx);
 8400            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8401            let item1_id = item1.item_id();
 8402            let item3_id = item3.item_id();
 8403            let item4_id = item4.item_id();
 8404            pane.close_items(window, cx, SaveIntent::Close, move |id| {
 8405                [item1_id, item3_id, item4_id].contains(&id)
 8406            })
 8407        });
 8408        cx.executor().run_until_parked();
 8409
 8410        assert!(cx.has_pending_prompt());
 8411        cx.simulate_prompt_answer("Save all");
 8412
 8413        cx.executor().run_until_parked();
 8414
 8415        // Item 1 is saved. There's a prompt to save item 3.
 8416        pane.update(cx, |pane, cx| {
 8417            assert_eq!(item1.read(cx).save_count, 1);
 8418            assert_eq!(item1.read(cx).save_as_count, 0);
 8419            assert_eq!(item1.read(cx).reload_count, 0);
 8420            assert_eq!(pane.items_len(), 3);
 8421            assert_eq!(pane.active_item().unwrap().item_id(), item3.item_id());
 8422        });
 8423        assert!(cx.has_pending_prompt());
 8424
 8425        // Cancel saving item 3.
 8426        cx.simulate_prompt_answer("Discard");
 8427        cx.executor().run_until_parked();
 8428
 8429        // Item 3 is reloaded. There's a prompt to save item 4.
 8430        pane.update(cx, |pane, cx| {
 8431            assert_eq!(item3.read(cx).save_count, 0);
 8432            assert_eq!(item3.read(cx).save_as_count, 0);
 8433            assert_eq!(item3.read(cx).reload_count, 1);
 8434            assert_eq!(pane.items_len(), 2);
 8435            assert_eq!(pane.active_item().unwrap().item_id(), item4.item_id());
 8436        });
 8437
 8438        // There's a prompt for a path for item 4.
 8439        cx.simulate_new_path_selection(|_| Some(Default::default()));
 8440        close_items.await.unwrap();
 8441
 8442        // The requested items are closed.
 8443        pane.update(cx, |pane, cx| {
 8444            assert_eq!(item4.read(cx).save_count, 0);
 8445            assert_eq!(item4.read(cx).save_as_count, 1);
 8446            assert_eq!(item4.read(cx).reload_count, 0);
 8447            assert_eq!(pane.items_len(), 1);
 8448            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8449        });
 8450    }
 8451
 8452    #[gpui::test]
 8453    async fn test_prompting_to_save_only_on_last_item_for_entry(cx: &mut TestAppContext) {
 8454        init_test(cx);
 8455
 8456        let fs = FakeFs::new(cx.executor());
 8457        let project = Project::test(fs, [], cx).await;
 8458        let (workspace, cx) =
 8459            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8460
 8461        // Create several workspace items with single project entries, and two
 8462        // workspace items with multiple project entries.
 8463        let single_entry_items = (0..=4)
 8464            .map(|project_entry_id| {
 8465                cx.new(|cx| {
 8466                    TestItem::new(cx)
 8467                        .with_dirty(true)
 8468                        .with_project_items(&[dirty_project_item(
 8469                            project_entry_id,
 8470                            &format!("{project_entry_id}.txt"),
 8471                            cx,
 8472                        )])
 8473                })
 8474            })
 8475            .collect::<Vec<_>>();
 8476        let item_2_3 = cx.new(|cx| {
 8477            TestItem::new(cx)
 8478                .with_dirty(true)
 8479                .with_singleton(false)
 8480                .with_project_items(&[
 8481                    single_entry_items[2].read(cx).project_items[0].clone(),
 8482                    single_entry_items[3].read(cx).project_items[0].clone(),
 8483                ])
 8484        });
 8485        let item_3_4 = cx.new(|cx| {
 8486            TestItem::new(cx)
 8487                .with_dirty(true)
 8488                .with_singleton(false)
 8489                .with_project_items(&[
 8490                    single_entry_items[3].read(cx).project_items[0].clone(),
 8491                    single_entry_items[4].read(cx).project_items[0].clone(),
 8492                ])
 8493        });
 8494
 8495        // Create two panes that contain the following project entries:
 8496        //   left pane:
 8497        //     multi-entry items:   (2, 3)
 8498        //     single-entry items:  0, 2, 3, 4
 8499        //   right pane:
 8500        //     single-entry items:  4, 1
 8501        //     multi-entry items:   (3, 4)
 8502        let (left_pane, right_pane) = workspace.update_in(cx, |workspace, window, cx| {
 8503            let left_pane = workspace.active_pane().clone();
 8504            workspace.add_item_to_active_pane(Box::new(item_2_3.clone()), None, true, window, cx);
 8505            workspace.add_item_to_active_pane(
 8506                single_entry_items[0].boxed_clone(),
 8507                None,
 8508                true,
 8509                window,
 8510                cx,
 8511            );
 8512            workspace.add_item_to_active_pane(
 8513                single_entry_items[2].boxed_clone(),
 8514                None,
 8515                true,
 8516                window,
 8517                cx,
 8518            );
 8519            workspace.add_item_to_active_pane(
 8520                single_entry_items[3].boxed_clone(),
 8521                None,
 8522                true,
 8523                window,
 8524                cx,
 8525            );
 8526            workspace.add_item_to_active_pane(
 8527                single_entry_items[4].boxed_clone(),
 8528                None,
 8529                true,
 8530                window,
 8531                cx,
 8532            );
 8533
 8534            let right_pane = workspace
 8535                .split_and_clone(left_pane.clone(), SplitDirection::Right, window, cx)
 8536                .unwrap();
 8537
 8538            right_pane.update(cx, |pane, cx| {
 8539                pane.add_item(
 8540                    single_entry_items[1].boxed_clone(),
 8541                    true,
 8542                    true,
 8543                    None,
 8544                    window,
 8545                    cx,
 8546                );
 8547                pane.add_item(Box::new(item_3_4.clone()), true, true, None, window, cx);
 8548            });
 8549
 8550            (left_pane, right_pane)
 8551        });
 8552
 8553        cx.focus(&right_pane);
 8554
 8555        let mut close = right_pane.update_in(cx, |pane, window, cx| {
 8556            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8557                .unwrap()
 8558        });
 8559        cx.executor().run_until_parked();
 8560
 8561        let msg = cx.pending_prompt().unwrap().0;
 8562        assert!(msg.contains("1.txt"));
 8563        assert!(!msg.contains("2.txt"));
 8564        assert!(!msg.contains("3.txt"));
 8565        assert!(!msg.contains("4.txt"));
 8566
 8567        cx.simulate_prompt_answer("Cancel");
 8568        close.await;
 8569
 8570        left_pane
 8571            .update_in(cx, |left_pane, window, cx| {
 8572                left_pane.close_item_by_id(
 8573                    single_entry_items[3].entity_id(),
 8574                    SaveIntent::Skip,
 8575                    window,
 8576                    cx,
 8577                )
 8578            })
 8579            .await
 8580            .unwrap();
 8581
 8582        close = right_pane.update_in(cx, |pane, window, cx| {
 8583            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8584                .unwrap()
 8585        });
 8586        cx.executor().run_until_parked();
 8587
 8588        let details = cx.pending_prompt().unwrap().1;
 8589        assert!(details.contains("1.txt"));
 8590        assert!(!details.contains("2.txt"));
 8591        assert!(details.contains("3.txt"));
 8592        // ideally this assertion could be made, but today we can only
 8593        // save whole items not project items, so the orphaned item 3 causes
 8594        // 4 to be saved too.
 8595        // assert!(!details.contains("4.txt"));
 8596
 8597        cx.simulate_prompt_answer("Save all");
 8598
 8599        cx.executor().run_until_parked();
 8600        close.await;
 8601        right_pane.read_with(cx, |pane, _| {
 8602            assert_eq!(pane.items_len(), 0);
 8603        });
 8604    }
 8605
 8606    #[gpui::test]
 8607    async fn test_autosave(cx: &mut gpui::TestAppContext) {
 8608        init_test(cx);
 8609
 8610        let fs = FakeFs::new(cx.executor());
 8611        let project = Project::test(fs, [], cx).await;
 8612        let (workspace, cx) =
 8613            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8614        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8615
 8616        let item = cx.new(|cx| {
 8617            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8618        });
 8619        let item_id = item.entity_id();
 8620        workspace.update_in(cx, |workspace, window, cx| {
 8621            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8622        });
 8623
 8624        // Autosave on window change.
 8625        item.update(cx, |item, cx| {
 8626            SettingsStore::update_global(cx, |settings, cx| {
 8627                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8628                    settings.autosave = Some(AutosaveSetting::OnWindowChange);
 8629                })
 8630            });
 8631            item.is_dirty = true;
 8632        });
 8633
 8634        // Deactivating the window saves the file.
 8635        cx.deactivate_window();
 8636        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8637
 8638        // Re-activating the window doesn't save the file.
 8639        cx.update(|window, _| window.activate_window());
 8640        cx.executor().run_until_parked();
 8641        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8642
 8643        // Autosave on focus change.
 8644        item.update_in(cx, |item, window, cx| {
 8645            cx.focus_self(window);
 8646            SettingsStore::update_global(cx, |settings, cx| {
 8647                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8648                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
 8649                })
 8650            });
 8651            item.is_dirty = true;
 8652        });
 8653
 8654        // Blurring the item saves the file.
 8655        item.update_in(cx, |_, window, _| window.blur());
 8656        cx.executor().run_until_parked();
 8657        item.read_with(cx, |item, _| assert_eq!(item.save_count, 2));
 8658
 8659        // Deactivating the window still saves the file.
 8660        item.update_in(cx, |item, window, cx| {
 8661            cx.focus_self(window);
 8662            item.is_dirty = true;
 8663        });
 8664        cx.deactivate_window();
 8665        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
 8666
 8667        // Autosave after delay.
 8668        item.update(cx, |item, cx| {
 8669            SettingsStore::update_global(cx, |settings, cx| {
 8670                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8671                    settings.autosave = Some(AutosaveSetting::AfterDelay { milliseconds: 500 });
 8672                })
 8673            });
 8674            item.is_dirty = true;
 8675            cx.emit(ItemEvent::Edit);
 8676        });
 8677
 8678        // Delay hasn't fully expired, so the file is still dirty and unsaved.
 8679        cx.executor().advance_clock(Duration::from_millis(250));
 8680        item.read_with(cx, |item, _| assert_eq!(item.save_count, 3));
 8681
 8682        // After delay expires, the file is saved.
 8683        cx.executor().advance_clock(Duration::from_millis(250));
 8684        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
 8685
 8686        // Autosave on focus change, ensuring closing the tab counts as such.
 8687        item.update(cx, |item, cx| {
 8688            SettingsStore::update_global(cx, |settings, cx| {
 8689                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8690                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
 8691                })
 8692            });
 8693            item.is_dirty = true;
 8694            for project_item in &mut item.project_items {
 8695                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8696            }
 8697        });
 8698
 8699        pane.update_in(cx, |pane, window, cx| {
 8700            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8701        })
 8702        .await
 8703        .unwrap();
 8704        assert!(!cx.has_pending_prompt());
 8705        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8706
 8707        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
 8708        workspace.update_in(cx, |workspace, window, cx| {
 8709            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8710        });
 8711        item.update_in(cx, |item, window, cx| {
 8712            item.project_items[0].update(cx, |item, _| {
 8713                item.entry_id = None;
 8714            });
 8715            item.is_dirty = true;
 8716            window.blur();
 8717        });
 8718        cx.run_until_parked();
 8719        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8720
 8721        // Ensure autosave is prevented for deleted files also when closing the buffer.
 8722        let _close_items = pane.update_in(cx, |pane, window, cx| {
 8723            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8724        });
 8725        cx.run_until_parked();
 8726        assert!(cx.has_pending_prompt());
 8727        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8728    }
 8729
 8730    #[gpui::test]
 8731    async fn test_pane_navigation(cx: &mut gpui::TestAppContext) {
 8732        init_test(cx);
 8733
 8734        let fs = FakeFs::new(cx.executor());
 8735
 8736        let project = Project::test(fs, [], cx).await;
 8737        let (workspace, cx) =
 8738            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8739
 8740        let item = cx.new(|cx| {
 8741            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8742        });
 8743        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8744        let toolbar = pane.read_with(cx, |pane, _| pane.toolbar().clone());
 8745        let toolbar_notify_count = Rc::new(RefCell::new(0));
 8746
 8747        workspace.update_in(cx, |workspace, window, cx| {
 8748            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8749            let toolbar_notification_count = toolbar_notify_count.clone();
 8750            cx.observe_in(&toolbar, window, move |_, _, _, _| {
 8751                *toolbar_notification_count.borrow_mut() += 1
 8752            })
 8753            .detach();
 8754        });
 8755
 8756        pane.read_with(cx, |pane, _| {
 8757            assert!(!pane.can_navigate_backward());
 8758            assert!(!pane.can_navigate_forward());
 8759        });
 8760
 8761        item.update_in(cx, |item, _, cx| {
 8762            item.set_state("one".to_string(), cx);
 8763        });
 8764
 8765        // Toolbar must be notified to re-render the navigation buttons
 8766        assert_eq!(*toolbar_notify_count.borrow(), 1);
 8767
 8768        pane.read_with(cx, |pane, _| {
 8769            assert!(pane.can_navigate_backward());
 8770            assert!(!pane.can_navigate_forward());
 8771        });
 8772
 8773        workspace
 8774            .update_in(cx, |workspace, window, cx| {
 8775                workspace.go_back(pane.downgrade(), window, cx)
 8776            })
 8777            .await
 8778            .unwrap();
 8779
 8780        assert_eq!(*toolbar_notify_count.borrow(), 2);
 8781        pane.read_with(cx, |pane, _| {
 8782            assert!(!pane.can_navigate_backward());
 8783            assert!(pane.can_navigate_forward());
 8784        });
 8785    }
 8786
 8787    #[gpui::test]
 8788    async fn test_toggle_docks_and_panels(cx: &mut gpui::TestAppContext) {
 8789        init_test(cx);
 8790        let fs = FakeFs::new(cx.executor());
 8791
 8792        let project = Project::test(fs, [], cx).await;
 8793        let (workspace, cx) =
 8794            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8795
 8796        let panel = workspace.update_in(cx, |workspace, window, cx| {
 8797            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 8798            workspace.add_panel(panel.clone(), window, cx);
 8799
 8800            workspace
 8801                .right_dock()
 8802                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
 8803
 8804            panel
 8805        });
 8806
 8807        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8808        pane.update_in(cx, |pane, window, cx| {
 8809            let item = cx.new(TestItem::new);
 8810            pane.add_item(Box::new(item), true, true, None, window, cx);
 8811        });
 8812
 8813        // Transfer focus from center to panel
 8814        workspace.update_in(cx, |workspace, window, cx| {
 8815            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8816        });
 8817
 8818        workspace.update_in(cx, |workspace, window, cx| {
 8819            assert!(workspace.right_dock().read(cx).is_open());
 8820            assert!(!panel.is_zoomed(window, cx));
 8821            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8822        });
 8823
 8824        // Transfer focus from panel to center
 8825        workspace.update_in(cx, |workspace, window, cx| {
 8826            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8827        });
 8828
 8829        workspace.update_in(cx, |workspace, window, cx| {
 8830            assert!(workspace.right_dock().read(cx).is_open());
 8831            assert!(!panel.is_zoomed(window, cx));
 8832            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8833        });
 8834
 8835        // Close the dock
 8836        workspace.update_in(cx, |workspace, window, cx| {
 8837            workspace.toggle_dock(DockPosition::Right, window, cx);
 8838        });
 8839
 8840        workspace.update_in(cx, |workspace, window, cx| {
 8841            assert!(!workspace.right_dock().read(cx).is_open());
 8842            assert!(!panel.is_zoomed(window, cx));
 8843            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8844        });
 8845
 8846        // Open the dock
 8847        workspace.update_in(cx, |workspace, window, cx| {
 8848            workspace.toggle_dock(DockPosition::Right, window, cx);
 8849        });
 8850
 8851        workspace.update_in(cx, |workspace, window, cx| {
 8852            assert!(workspace.right_dock().read(cx).is_open());
 8853            assert!(!panel.is_zoomed(window, cx));
 8854            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8855        });
 8856
 8857        // Focus and zoom panel
 8858        panel.update_in(cx, |panel, window, cx| {
 8859            cx.focus_self(window);
 8860            panel.set_zoomed(true, window, cx)
 8861        });
 8862
 8863        workspace.update_in(cx, |workspace, window, cx| {
 8864            assert!(workspace.right_dock().read(cx).is_open());
 8865            assert!(panel.is_zoomed(window, cx));
 8866            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8867        });
 8868
 8869        // Transfer focus to the center closes the dock
 8870        workspace.update_in(cx, |workspace, window, cx| {
 8871            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8872        });
 8873
 8874        workspace.update_in(cx, |workspace, window, cx| {
 8875            assert!(!workspace.right_dock().read(cx).is_open());
 8876            assert!(panel.is_zoomed(window, cx));
 8877            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8878        });
 8879
 8880        // Transferring focus back to the panel keeps it zoomed
 8881        workspace.update_in(cx, |workspace, window, cx| {
 8882            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8883        });
 8884
 8885        workspace.update_in(cx, |workspace, window, cx| {
 8886            assert!(workspace.right_dock().read(cx).is_open());
 8887            assert!(panel.is_zoomed(window, cx));
 8888            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8889        });
 8890
 8891        // Close the dock while it is zoomed
 8892        workspace.update_in(cx, |workspace, window, cx| {
 8893            workspace.toggle_dock(DockPosition::Right, window, cx)
 8894        });
 8895
 8896        workspace.update_in(cx, |workspace, window, cx| {
 8897            assert!(!workspace.right_dock().read(cx).is_open());
 8898            assert!(panel.is_zoomed(window, cx));
 8899            assert!(workspace.zoomed.is_none());
 8900            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8901        });
 8902
 8903        // Opening the dock, when it's zoomed, retains focus
 8904        workspace.update_in(cx, |workspace, window, cx| {
 8905            workspace.toggle_dock(DockPosition::Right, window, cx)
 8906        });
 8907
 8908        workspace.update_in(cx, |workspace, window, cx| {
 8909            assert!(workspace.right_dock().read(cx).is_open());
 8910            assert!(panel.is_zoomed(window, cx));
 8911            assert!(workspace.zoomed.is_some());
 8912            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8913        });
 8914
 8915        // Unzoom and close the panel, zoom the active pane.
 8916        panel.update_in(cx, |panel, window, cx| panel.set_zoomed(false, window, cx));
 8917        workspace.update_in(cx, |workspace, window, cx| {
 8918            workspace.toggle_dock(DockPosition::Right, window, cx)
 8919        });
 8920        pane.update_in(cx, |pane, window, cx| {
 8921            pane.toggle_zoom(&Default::default(), window, cx)
 8922        });
 8923
 8924        // Opening a dock unzooms the pane.
 8925        workspace.update_in(cx, |workspace, window, cx| {
 8926            workspace.toggle_dock(DockPosition::Right, window, cx)
 8927        });
 8928        workspace.update_in(cx, |workspace, window, cx| {
 8929            let pane = pane.read(cx);
 8930            assert!(!pane.is_zoomed());
 8931            assert!(!pane.focus_handle(cx).is_focused(window));
 8932            assert!(workspace.right_dock().read(cx).is_open());
 8933            assert!(workspace.zoomed.is_none());
 8934        });
 8935    }
 8936
 8937    #[gpui::test]
 8938    async fn test_join_pane_into_next(cx: &mut gpui::TestAppContext) {
 8939        init_test(cx);
 8940
 8941        let fs = FakeFs::new(cx.executor());
 8942
 8943        let project = Project::test(fs, None, cx).await;
 8944        let (workspace, cx) =
 8945            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8946
 8947        // Let's arrange the panes like this:
 8948        //
 8949        // +-----------------------+
 8950        // |         top           |
 8951        // +------+--------+-------+
 8952        // | left | center | right |
 8953        // +------+--------+-------+
 8954        // |        bottom         |
 8955        // +-----------------------+
 8956
 8957        let top_item = cx.new(|cx| {
 8958            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "top.txt", cx)])
 8959        });
 8960        let bottom_item = cx.new(|cx| {
 8961            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "bottom.txt", cx)])
 8962        });
 8963        let left_item = cx.new(|cx| {
 8964            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "left.txt", cx)])
 8965        });
 8966        let right_item = cx.new(|cx| {
 8967            TestItem::new(cx).with_project_items(&[TestProjectItem::new(4, "right.txt", cx)])
 8968        });
 8969        let center_item = cx.new(|cx| {
 8970            TestItem::new(cx).with_project_items(&[TestProjectItem::new(5, "center.txt", cx)])
 8971        });
 8972
 8973        let top_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 8974            let top_pane_id = workspace.active_pane().entity_id();
 8975            workspace.add_item_to_active_pane(Box::new(top_item.clone()), None, false, window, cx);
 8976            workspace.split_pane(
 8977                workspace.active_pane().clone(),
 8978                SplitDirection::Down,
 8979                window,
 8980                cx,
 8981            );
 8982            top_pane_id
 8983        });
 8984        let bottom_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 8985            let bottom_pane_id = workspace.active_pane().entity_id();
 8986            workspace.add_item_to_active_pane(
 8987                Box::new(bottom_item.clone()),
 8988                None,
 8989                false,
 8990                window,
 8991                cx,
 8992            );
 8993            workspace.split_pane(
 8994                workspace.active_pane().clone(),
 8995                SplitDirection::Up,
 8996                window,
 8997                cx,
 8998            );
 8999            bottom_pane_id
 9000        });
 9001        let left_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9002            let left_pane_id = workspace.active_pane().entity_id();
 9003            workspace.add_item_to_active_pane(Box::new(left_item.clone()), None, false, window, cx);
 9004            workspace.split_pane(
 9005                workspace.active_pane().clone(),
 9006                SplitDirection::Right,
 9007                window,
 9008                cx,
 9009            );
 9010            left_pane_id
 9011        });
 9012        let right_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9013            let right_pane_id = workspace.active_pane().entity_id();
 9014            workspace.add_item_to_active_pane(
 9015                Box::new(right_item.clone()),
 9016                None,
 9017                false,
 9018                window,
 9019                cx,
 9020            );
 9021            workspace.split_pane(
 9022                workspace.active_pane().clone(),
 9023                SplitDirection::Left,
 9024                window,
 9025                cx,
 9026            );
 9027            right_pane_id
 9028        });
 9029        let center_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9030            let center_pane_id = workspace.active_pane().entity_id();
 9031            workspace.add_item_to_active_pane(
 9032                Box::new(center_item.clone()),
 9033                None,
 9034                false,
 9035                window,
 9036                cx,
 9037            );
 9038            center_pane_id
 9039        });
 9040        cx.executor().run_until_parked();
 9041
 9042        workspace.update_in(cx, |workspace, window, cx| {
 9043            assert_eq!(center_pane_id, workspace.active_pane().entity_id());
 9044
 9045            // Join into next from center pane into right
 9046            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9047        });
 9048
 9049        workspace.update_in(cx, |workspace, window, cx| {
 9050            let active_pane = workspace.active_pane();
 9051            assert_eq!(right_pane_id, active_pane.entity_id());
 9052            assert_eq!(2, active_pane.read(cx).items_len());
 9053            let item_ids_in_pane =
 9054                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9055            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9056            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9057
 9058            // Join into next from right pane into bottom
 9059            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9060        });
 9061
 9062        workspace.update_in(cx, |workspace, window, cx| {
 9063            let active_pane = workspace.active_pane();
 9064            assert_eq!(bottom_pane_id, active_pane.entity_id());
 9065            assert_eq!(3, active_pane.read(cx).items_len());
 9066            let item_ids_in_pane =
 9067                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9068            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9069            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9070            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9071
 9072            // Join into next from bottom pane into left
 9073            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9074        });
 9075
 9076        workspace.update_in(cx, |workspace, window, cx| {
 9077            let active_pane = workspace.active_pane();
 9078            assert_eq!(left_pane_id, active_pane.entity_id());
 9079            assert_eq!(4, active_pane.read(cx).items_len());
 9080            let item_ids_in_pane =
 9081                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9082            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9083            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9084            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9085            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9086
 9087            // Join into next from left pane into top
 9088            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9089        });
 9090
 9091        workspace.update_in(cx, |workspace, window, cx| {
 9092            let active_pane = workspace.active_pane();
 9093            assert_eq!(top_pane_id, active_pane.entity_id());
 9094            assert_eq!(5, active_pane.read(cx).items_len());
 9095            let item_ids_in_pane =
 9096                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9097            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9098            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9099            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9100            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9101            assert!(item_ids_in_pane.contains(&top_item.item_id()));
 9102
 9103            // Single pane left: no-op
 9104            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx)
 9105        });
 9106
 9107        workspace.update(cx, |workspace, _cx| {
 9108            let active_pane = workspace.active_pane();
 9109            assert_eq!(top_pane_id, active_pane.entity_id());
 9110        });
 9111    }
 9112
 9113    fn add_an_item_to_active_pane(
 9114        cx: &mut VisualTestContext,
 9115        workspace: &Entity<Workspace>,
 9116        item_id: u64,
 9117    ) -> Entity<TestItem> {
 9118        let item = cx.new(|cx| {
 9119            TestItem::new(cx).with_project_items(&[TestProjectItem::new(
 9120                item_id,
 9121                "item{item_id}.txt",
 9122                cx,
 9123            )])
 9124        });
 9125        workspace.update_in(cx, |workspace, window, cx| {
 9126            workspace.add_item_to_active_pane(Box::new(item.clone()), None, false, window, cx);
 9127        });
 9128        return item;
 9129    }
 9130
 9131    fn split_pane(cx: &mut VisualTestContext, workspace: &Entity<Workspace>) -> Entity<Pane> {
 9132        return workspace.update_in(cx, |workspace, window, cx| {
 9133            let new_pane = workspace.split_pane(
 9134                workspace.active_pane().clone(),
 9135                SplitDirection::Right,
 9136                window,
 9137                cx,
 9138            );
 9139            new_pane
 9140        });
 9141    }
 9142
 9143    #[gpui::test]
 9144    async fn test_join_all_panes(cx: &mut gpui::TestAppContext) {
 9145        init_test(cx);
 9146        let fs = FakeFs::new(cx.executor());
 9147        let project = Project::test(fs, None, cx).await;
 9148        let (workspace, cx) =
 9149            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9150
 9151        add_an_item_to_active_pane(cx, &workspace, 1);
 9152        split_pane(cx, &workspace);
 9153        add_an_item_to_active_pane(cx, &workspace, 2);
 9154        split_pane(cx, &workspace); // empty pane
 9155        split_pane(cx, &workspace);
 9156        let last_item = add_an_item_to_active_pane(cx, &workspace, 3);
 9157
 9158        cx.executor().run_until_parked();
 9159
 9160        workspace.update(cx, |workspace, cx| {
 9161            let num_panes = workspace.panes().len();
 9162            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9163            let active_item = workspace
 9164                .active_pane()
 9165                .read(cx)
 9166                .active_item()
 9167                .expect("item is in focus");
 9168
 9169            assert_eq!(num_panes, 4);
 9170            assert_eq!(num_items_in_current_pane, 1);
 9171            assert_eq!(active_item.item_id(), last_item.item_id());
 9172        });
 9173
 9174        workspace.update_in(cx, |workspace, window, cx| {
 9175            workspace.join_all_panes(window, cx);
 9176        });
 9177
 9178        workspace.update(cx, |workspace, cx| {
 9179            let num_panes = workspace.panes().len();
 9180            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9181            let active_item = workspace
 9182                .active_pane()
 9183                .read(cx)
 9184                .active_item()
 9185                .expect("item is in focus");
 9186
 9187            assert_eq!(num_panes, 1);
 9188            assert_eq!(num_items_in_current_pane, 3);
 9189            assert_eq!(active_item.item_id(), last_item.item_id());
 9190        });
 9191    }
 9192    struct TestModal(FocusHandle);
 9193
 9194    impl TestModal {
 9195        fn new(_: &mut Window, cx: &mut Context<Self>) -> Self {
 9196            Self(cx.focus_handle())
 9197        }
 9198    }
 9199
 9200    impl EventEmitter<DismissEvent> for TestModal {}
 9201
 9202    impl Focusable for TestModal {
 9203        fn focus_handle(&self, _cx: &App) -> FocusHandle {
 9204            self.0.clone()
 9205        }
 9206    }
 9207
 9208    impl ModalView for TestModal {}
 9209
 9210    impl Render for TestModal {
 9211        fn render(
 9212            &mut self,
 9213            _window: &mut Window,
 9214            _cx: &mut Context<TestModal>,
 9215        ) -> impl IntoElement {
 9216            div().track_focus(&self.0)
 9217        }
 9218    }
 9219
 9220    #[gpui::test]
 9221    async fn test_panels(cx: &mut gpui::TestAppContext) {
 9222        init_test(cx);
 9223        let fs = FakeFs::new(cx.executor());
 9224
 9225        let project = Project::test(fs, [], cx).await;
 9226        let (workspace, cx) =
 9227            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9228
 9229        let (panel_1, panel_2) = workspace.update_in(cx, |workspace, window, cx| {
 9230            let panel_1 = cx.new(|cx| TestPanel::new(DockPosition::Left, cx));
 9231            workspace.add_panel(panel_1.clone(), window, cx);
 9232            workspace.toggle_dock(DockPosition::Left, window, cx);
 9233            let panel_2 = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 9234            workspace.add_panel(panel_2.clone(), window, cx);
 9235            workspace.toggle_dock(DockPosition::Right, window, cx);
 9236
 9237            let left_dock = workspace.left_dock();
 9238            assert_eq!(
 9239                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9240                panel_1.panel_id()
 9241            );
 9242            assert_eq!(
 9243                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9244                panel_1.size(window, cx)
 9245            );
 9246
 9247            left_dock.update(cx, |left_dock, cx| {
 9248                left_dock.resize_active_panel(Some(px(1337.)), window, cx)
 9249            });
 9250            assert_eq!(
 9251                workspace
 9252                    .right_dock()
 9253                    .read(cx)
 9254                    .visible_panel()
 9255                    .unwrap()
 9256                    .panel_id(),
 9257                panel_2.panel_id(),
 9258            );
 9259
 9260            (panel_1, panel_2)
 9261        });
 9262
 9263        // Move panel_1 to the right
 9264        panel_1.update_in(cx, |panel_1, window, cx| {
 9265            panel_1.set_position(DockPosition::Right, window, cx)
 9266        });
 9267
 9268        workspace.update_in(cx, |workspace, window, cx| {
 9269            // Since panel_1 was visible on the left, it should now be visible now that it's been moved to the right.
 9270            // Since it was the only panel on the left, the left dock should now be closed.
 9271            assert!(!workspace.left_dock().read(cx).is_open());
 9272            assert!(workspace.left_dock().read(cx).visible_panel().is_none());
 9273            let right_dock = workspace.right_dock();
 9274            assert_eq!(
 9275                right_dock.read(cx).visible_panel().unwrap().panel_id(),
 9276                panel_1.panel_id()
 9277            );
 9278            assert_eq!(
 9279                right_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9280                px(1337.)
 9281            );
 9282
 9283            // Now we move panel_2 to the left
 9284            panel_2.set_position(DockPosition::Left, window, cx);
 9285        });
 9286
 9287        workspace.update(cx, |workspace, cx| {
 9288            // Since panel_2 was not visible on the right, we don't open the left dock.
 9289            assert!(!workspace.left_dock().read(cx).is_open());
 9290            // And the right dock is unaffected in its displaying of panel_1
 9291            assert!(workspace.right_dock().read(cx).is_open());
 9292            assert_eq!(
 9293                workspace
 9294                    .right_dock()
 9295                    .read(cx)
 9296                    .visible_panel()
 9297                    .unwrap()
 9298                    .panel_id(),
 9299                panel_1.panel_id(),
 9300            );
 9301        });
 9302
 9303        // Move panel_1 back to the left
 9304        panel_1.update_in(cx, |panel_1, window, cx| {
 9305            panel_1.set_position(DockPosition::Left, window, cx)
 9306        });
 9307
 9308        workspace.update_in(cx, |workspace, window, cx| {
 9309            // Since panel_1 was visible on the right, we open the left dock and make panel_1 active.
 9310            let left_dock = workspace.left_dock();
 9311            assert!(left_dock.read(cx).is_open());
 9312            assert_eq!(
 9313                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9314                panel_1.panel_id()
 9315            );
 9316            assert_eq!(
 9317                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9318                px(1337.)
 9319            );
 9320            // And the right dock should be closed as it no longer has any panels.
 9321            assert!(!workspace.right_dock().read(cx).is_open());
 9322
 9323            // Now we move panel_1 to the bottom
 9324            panel_1.set_position(DockPosition::Bottom, window, cx);
 9325        });
 9326
 9327        workspace.update_in(cx, |workspace, window, cx| {
 9328            // Since panel_1 was visible on the left, we close the left dock.
 9329            assert!(!workspace.left_dock().read(cx).is_open());
 9330            // The bottom dock is sized based on the panel's default size,
 9331            // since the panel orientation changed from vertical to horizontal.
 9332            let bottom_dock = workspace.bottom_dock();
 9333            assert_eq!(
 9334                bottom_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9335                panel_1.size(window, cx),
 9336            );
 9337            // Close bottom dock and move panel_1 back to the left.
 9338            bottom_dock.update(cx, |bottom_dock, cx| {
 9339                bottom_dock.set_open(false, window, cx)
 9340            });
 9341            panel_1.set_position(DockPosition::Left, window, cx);
 9342        });
 9343
 9344        // Emit activated event on panel 1
 9345        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Activate));
 9346
 9347        // Now the left dock is open and panel_1 is active and focused.
 9348        workspace.update_in(cx, |workspace, window, cx| {
 9349            let left_dock = workspace.left_dock();
 9350            assert!(left_dock.read(cx).is_open());
 9351            assert_eq!(
 9352                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9353                panel_1.panel_id(),
 9354            );
 9355            assert!(panel_1.focus_handle(cx).is_focused(window));
 9356        });
 9357
 9358        // Emit closed event on panel 2, which is not active
 9359        panel_2.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9360
 9361        // Wo don't close the left dock, because panel_2 wasn't the active panel
 9362        workspace.update(cx, |workspace, cx| {
 9363            let left_dock = workspace.left_dock();
 9364            assert!(left_dock.read(cx).is_open());
 9365            assert_eq!(
 9366                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9367                panel_1.panel_id(),
 9368            );
 9369        });
 9370
 9371        // Emitting a ZoomIn event shows the panel as zoomed.
 9372        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomIn));
 9373        workspace.read_with(cx, |workspace, _| {
 9374            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9375            assert_eq!(workspace.zoomed_position, Some(DockPosition::Left));
 9376        });
 9377
 9378        // Move panel to another dock while it is zoomed
 9379        panel_1.update_in(cx, |panel, window, cx| {
 9380            panel.set_position(DockPosition::Right, window, cx)
 9381        });
 9382        workspace.read_with(cx, |workspace, _| {
 9383            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9384
 9385            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9386        });
 9387
 9388        // This is a helper for getting a:
 9389        // - valid focus on an element,
 9390        // - that isn't a part of the panes and panels system of the Workspace,
 9391        // - and doesn't trigger the 'on_focus_lost' API.
 9392        let focus_other_view = {
 9393            let workspace = workspace.clone();
 9394            move |cx: &mut VisualTestContext| {
 9395                workspace.update_in(cx, |workspace, window, cx| {
 9396                    if let Some(_) = workspace.active_modal::<TestModal>(cx) {
 9397                        workspace.toggle_modal(window, cx, TestModal::new);
 9398                        workspace.toggle_modal(window, cx, TestModal::new);
 9399                    } else {
 9400                        workspace.toggle_modal(window, cx, TestModal::new);
 9401                    }
 9402                })
 9403            }
 9404        };
 9405
 9406        // If focus is transferred to another view that's not a panel or another pane, we still show
 9407        // the panel as zoomed.
 9408        focus_other_view(cx);
 9409        workspace.read_with(cx, |workspace, _| {
 9410            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9411            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9412        });
 9413
 9414        // If focus is transferred elsewhere in the workspace, the panel is no longer zoomed.
 9415        workspace.update_in(cx, |_workspace, window, cx| {
 9416            cx.focus_self(window);
 9417        });
 9418        workspace.read_with(cx, |workspace, _| {
 9419            assert_eq!(workspace.zoomed, None);
 9420            assert_eq!(workspace.zoomed_position, None);
 9421        });
 9422
 9423        // If focus is transferred again to another view that's not a panel or a pane, we won't
 9424        // show the panel as zoomed because it wasn't zoomed before.
 9425        focus_other_view(cx);
 9426        workspace.read_with(cx, |workspace, _| {
 9427            assert_eq!(workspace.zoomed, None);
 9428            assert_eq!(workspace.zoomed_position, None);
 9429        });
 9430
 9431        // When the panel is activated, it is zoomed again.
 9432        cx.dispatch_action(ToggleRightDock);
 9433        workspace.read_with(cx, |workspace, _| {
 9434            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9435            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9436        });
 9437
 9438        // Emitting a ZoomOut event unzooms the panel.
 9439        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomOut));
 9440        workspace.read_with(cx, |workspace, _| {
 9441            assert_eq!(workspace.zoomed, None);
 9442            assert_eq!(workspace.zoomed_position, None);
 9443        });
 9444
 9445        // Emit closed event on panel 1, which is active
 9446        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9447
 9448        // Now the left dock is closed, because panel_1 was the active panel
 9449        workspace.update(cx, |workspace, cx| {
 9450            let right_dock = workspace.right_dock();
 9451            assert!(!right_dock.read(cx).is_open());
 9452        });
 9453    }
 9454
 9455    #[gpui::test]
 9456    async fn test_no_save_prompt_when_multi_buffer_dirty_items_closed(cx: &mut TestAppContext) {
 9457        init_test(cx);
 9458
 9459        let fs = FakeFs::new(cx.background_executor.clone());
 9460        let project = Project::test(fs, [], cx).await;
 9461        let (workspace, cx) =
 9462            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9463        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9464
 9465        let dirty_regular_buffer = cx.new(|cx| {
 9466            TestItem::new(cx)
 9467                .with_dirty(true)
 9468                .with_label("1.txt")
 9469                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9470        });
 9471        let dirty_regular_buffer_2 = cx.new(|cx| {
 9472            TestItem::new(cx)
 9473                .with_dirty(true)
 9474                .with_label("2.txt")
 9475                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9476        });
 9477        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9478            TestItem::new(cx)
 9479                .with_dirty(true)
 9480                .with_singleton(false)
 9481                .with_label("Fake Project Search")
 9482                .with_project_items(&[
 9483                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9484                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9485                ])
 9486        });
 9487        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9488        workspace.update_in(cx, |workspace, window, cx| {
 9489            workspace.add_item(
 9490                pane.clone(),
 9491                Box::new(dirty_regular_buffer.clone()),
 9492                None,
 9493                false,
 9494                false,
 9495                window,
 9496                cx,
 9497            );
 9498            workspace.add_item(
 9499                pane.clone(),
 9500                Box::new(dirty_regular_buffer_2.clone()),
 9501                None,
 9502                false,
 9503                false,
 9504                window,
 9505                cx,
 9506            );
 9507            workspace.add_item(
 9508                pane.clone(),
 9509                Box::new(dirty_multi_buffer_with_both.clone()),
 9510                None,
 9511                false,
 9512                false,
 9513                window,
 9514                cx,
 9515            );
 9516        });
 9517
 9518        pane.update_in(cx, |pane, window, cx| {
 9519            pane.activate_item(2, true, true, window, cx);
 9520            assert_eq!(
 9521                pane.active_item().unwrap().item_id(),
 9522                multi_buffer_with_both_files_id,
 9523                "Should select the multi buffer in the pane"
 9524            );
 9525        });
 9526        let close_all_but_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9527            pane.close_other_items(
 9528                &CloseOtherItems {
 9529                    save_intent: Some(SaveIntent::Save),
 9530                    close_pinned: true,
 9531                },
 9532                None,
 9533                window,
 9534                cx,
 9535            )
 9536        });
 9537        cx.background_executor.run_until_parked();
 9538        assert!(!cx.has_pending_prompt());
 9539        close_all_but_multi_buffer_task
 9540            .await
 9541            .expect("Closing all buffers but the multi buffer failed");
 9542        pane.update(cx, |pane, cx| {
 9543            assert_eq!(dirty_regular_buffer.read(cx).save_count, 1);
 9544            assert_eq!(dirty_multi_buffer_with_both.read(cx).save_count, 0);
 9545            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 1);
 9546            assert_eq!(pane.items_len(), 1);
 9547            assert_eq!(
 9548                pane.active_item().unwrap().item_id(),
 9549                multi_buffer_with_both_files_id,
 9550                "Should have only the multi buffer left in the pane"
 9551            );
 9552            assert!(
 9553                dirty_multi_buffer_with_both.read(cx).is_dirty,
 9554                "The multi buffer containing the unsaved buffer should still be dirty"
 9555            );
 9556        });
 9557
 9558        dirty_regular_buffer.update(cx, |buffer, cx| {
 9559            buffer.project_items[0].update(cx, |pi, _| pi.is_dirty = true)
 9560        });
 9561
 9562        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9563            pane.close_active_item(
 9564                &CloseActiveItem {
 9565                    save_intent: Some(SaveIntent::Close),
 9566                    close_pinned: false,
 9567                },
 9568                window,
 9569                cx,
 9570            )
 9571        });
 9572        cx.background_executor.run_until_parked();
 9573        assert!(
 9574            cx.has_pending_prompt(),
 9575            "Dirty multi buffer should prompt a save dialog"
 9576        );
 9577        cx.simulate_prompt_answer("Save");
 9578        cx.background_executor.run_until_parked();
 9579        close_multi_buffer_task
 9580            .await
 9581            .expect("Closing the multi buffer failed");
 9582        pane.update(cx, |pane, cx| {
 9583            assert_eq!(
 9584                dirty_multi_buffer_with_both.read(cx).save_count,
 9585                1,
 9586                "Multi buffer item should get be saved"
 9587            );
 9588            // Test impl does not save inner items, so we do not assert them
 9589            assert_eq!(
 9590                pane.items_len(),
 9591                0,
 9592                "No more items should be left in the pane"
 9593            );
 9594            assert!(pane.active_item().is_none());
 9595        });
 9596    }
 9597
 9598    #[gpui::test]
 9599    async fn test_save_prompt_when_dirty_multi_buffer_closed_with_some_of_its_dirty_items_not_present_in_the_pane(
 9600        cx: &mut TestAppContext,
 9601    ) {
 9602        init_test(cx);
 9603
 9604        let fs = FakeFs::new(cx.background_executor.clone());
 9605        let project = Project::test(fs, [], cx).await;
 9606        let (workspace, cx) =
 9607            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9608        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9609
 9610        let dirty_regular_buffer = cx.new(|cx| {
 9611            TestItem::new(cx)
 9612                .with_dirty(true)
 9613                .with_label("1.txt")
 9614                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9615        });
 9616        let dirty_regular_buffer_2 = cx.new(|cx| {
 9617            TestItem::new(cx)
 9618                .with_dirty(true)
 9619                .with_label("2.txt")
 9620                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9621        });
 9622        let clear_regular_buffer = cx.new(|cx| {
 9623            TestItem::new(cx)
 9624                .with_label("3.txt")
 9625                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
 9626        });
 9627
 9628        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9629            TestItem::new(cx)
 9630                .with_dirty(true)
 9631                .with_singleton(false)
 9632                .with_label("Fake Project Search")
 9633                .with_project_items(&[
 9634                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9635                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9636                    clear_regular_buffer.read(cx).project_items[0].clone(),
 9637                ])
 9638        });
 9639        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9640        workspace.update_in(cx, |workspace, window, cx| {
 9641            workspace.add_item(
 9642                pane.clone(),
 9643                Box::new(dirty_regular_buffer.clone()),
 9644                None,
 9645                false,
 9646                false,
 9647                window,
 9648                cx,
 9649            );
 9650            workspace.add_item(
 9651                pane.clone(),
 9652                Box::new(dirty_multi_buffer_with_both.clone()),
 9653                None,
 9654                false,
 9655                false,
 9656                window,
 9657                cx,
 9658            );
 9659        });
 9660
 9661        pane.update_in(cx, |pane, window, cx| {
 9662            pane.activate_item(1, true, true, window, cx);
 9663            assert_eq!(
 9664                pane.active_item().unwrap().item_id(),
 9665                multi_buffer_with_both_files_id,
 9666                "Should select the multi buffer in the pane"
 9667            );
 9668        });
 9669        let _close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9670            pane.close_active_item(
 9671                &CloseActiveItem {
 9672                    save_intent: None,
 9673                    close_pinned: false,
 9674                },
 9675                window,
 9676                cx,
 9677            )
 9678        });
 9679        cx.background_executor.run_until_parked();
 9680        assert!(
 9681            cx.has_pending_prompt(),
 9682            "With one dirty item from the multi buffer not being in the pane, a save prompt should be shown"
 9683        );
 9684    }
 9685
 9686    /// Tests that when `close_on_file_delete` is enabled, files are automatically
 9687    /// closed when they are deleted from disk.
 9688    #[gpui::test]
 9689    async fn test_close_on_disk_deletion_enabled(cx: &mut TestAppContext) {
 9690        init_test(cx);
 9691
 9692        // Enable the close_on_disk_deletion setting
 9693        cx.update_global(|store: &mut SettingsStore, cx| {
 9694            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9695                settings.close_on_file_delete = Some(true);
 9696            });
 9697        });
 9698
 9699        let fs = FakeFs::new(cx.background_executor.clone());
 9700        let project = Project::test(fs, [], cx).await;
 9701        let (workspace, cx) =
 9702            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9703        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9704
 9705        // Create a test item that simulates a file
 9706        let item = cx.new(|cx| {
 9707            TestItem::new(cx)
 9708                .with_label("test.txt")
 9709                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9710        });
 9711
 9712        // Add item to workspace
 9713        workspace.update_in(cx, |workspace, window, cx| {
 9714            workspace.add_item(
 9715                pane.clone(),
 9716                Box::new(item.clone()),
 9717                None,
 9718                false,
 9719                false,
 9720                window,
 9721                cx,
 9722            );
 9723        });
 9724
 9725        // Verify the item is in the pane
 9726        pane.read_with(cx, |pane, _| {
 9727            assert_eq!(pane.items().count(), 1);
 9728        });
 9729
 9730        // Simulate file deletion by setting the item's deleted state
 9731        item.update(cx, |item, _| {
 9732            item.set_has_deleted_file(true);
 9733        });
 9734
 9735        // Emit UpdateTab event to trigger the close behavior
 9736        cx.run_until_parked();
 9737        item.update(cx, |_, cx| {
 9738            cx.emit(ItemEvent::UpdateTab);
 9739        });
 9740
 9741        // Allow the close operation to complete
 9742        cx.run_until_parked();
 9743
 9744        // Verify the item was automatically closed
 9745        pane.read_with(cx, |pane, _| {
 9746            assert_eq!(
 9747                pane.items().count(),
 9748                0,
 9749                "Item should be automatically closed when file is deleted"
 9750            );
 9751        });
 9752    }
 9753
 9754    /// Tests that when `close_on_file_delete` is disabled (default), files remain
 9755    /// open with a strikethrough when they are deleted from disk.
 9756    #[gpui::test]
 9757    async fn test_close_on_disk_deletion_disabled(cx: &mut TestAppContext) {
 9758        init_test(cx);
 9759
 9760        // Ensure close_on_disk_deletion is disabled (default)
 9761        cx.update_global(|store: &mut SettingsStore, cx| {
 9762            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9763                settings.close_on_file_delete = Some(false);
 9764            });
 9765        });
 9766
 9767        let fs = FakeFs::new(cx.background_executor.clone());
 9768        let project = Project::test(fs, [], cx).await;
 9769        let (workspace, cx) =
 9770            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9771        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9772
 9773        // Create a test item that simulates a file
 9774        let item = cx.new(|cx| {
 9775            TestItem::new(cx)
 9776                .with_label("test.txt")
 9777                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9778        });
 9779
 9780        // Add item to workspace
 9781        workspace.update_in(cx, |workspace, window, cx| {
 9782            workspace.add_item(
 9783                pane.clone(),
 9784                Box::new(item.clone()),
 9785                None,
 9786                false,
 9787                false,
 9788                window,
 9789                cx,
 9790            );
 9791        });
 9792
 9793        // Verify the item is in the pane
 9794        pane.read_with(cx, |pane, _| {
 9795            assert_eq!(pane.items().count(), 1);
 9796        });
 9797
 9798        // Simulate file deletion
 9799        item.update(cx, |item, _| {
 9800            item.set_has_deleted_file(true);
 9801        });
 9802
 9803        // Emit UpdateTab event
 9804        cx.run_until_parked();
 9805        item.update(cx, |_, cx| {
 9806            cx.emit(ItemEvent::UpdateTab);
 9807        });
 9808
 9809        // Allow any potential close operation to complete
 9810        cx.run_until_parked();
 9811
 9812        // Verify the item remains open (with strikethrough)
 9813        pane.read_with(cx, |pane, _| {
 9814            assert_eq!(
 9815                pane.items().count(),
 9816                1,
 9817                "Item should remain open when close_on_disk_deletion is disabled"
 9818            );
 9819        });
 9820
 9821        // Verify the item shows as deleted
 9822        item.read_with(cx, |item, _| {
 9823            assert!(
 9824                item.has_deleted_file,
 9825                "Item should be marked as having deleted file"
 9826            );
 9827        });
 9828    }
 9829
 9830    /// Tests that dirty files are not automatically closed when deleted from disk,
 9831    /// even when `close_on_file_delete` is enabled. This ensures users don't lose
 9832    /// unsaved changes without being prompted.
 9833    #[gpui::test]
 9834    async fn test_close_on_disk_deletion_with_dirty_file(cx: &mut TestAppContext) {
 9835        init_test(cx);
 9836
 9837        // Enable the close_on_file_delete setting
 9838        cx.update_global(|store: &mut SettingsStore, cx| {
 9839            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9840                settings.close_on_file_delete = Some(true);
 9841            });
 9842        });
 9843
 9844        let fs = FakeFs::new(cx.background_executor.clone());
 9845        let project = Project::test(fs, [], cx).await;
 9846        let (workspace, cx) =
 9847            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9848        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9849
 9850        // Create a dirty test item
 9851        let item = cx.new(|cx| {
 9852            TestItem::new(cx)
 9853                .with_dirty(true)
 9854                .with_label("test.txt")
 9855                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9856        });
 9857
 9858        // Add item to workspace
 9859        workspace.update_in(cx, |workspace, window, cx| {
 9860            workspace.add_item(
 9861                pane.clone(),
 9862                Box::new(item.clone()),
 9863                None,
 9864                false,
 9865                false,
 9866                window,
 9867                cx,
 9868            );
 9869        });
 9870
 9871        // Simulate file deletion
 9872        item.update(cx, |item, _| {
 9873            item.set_has_deleted_file(true);
 9874        });
 9875
 9876        // Emit UpdateTab event to trigger the close behavior
 9877        cx.run_until_parked();
 9878        item.update(cx, |_, cx| {
 9879            cx.emit(ItemEvent::UpdateTab);
 9880        });
 9881
 9882        // Allow any potential close operation to complete
 9883        cx.run_until_parked();
 9884
 9885        // Verify the item remains open (dirty files are not auto-closed)
 9886        pane.read_with(cx, |pane, _| {
 9887            assert_eq!(
 9888                pane.items().count(),
 9889                1,
 9890                "Dirty items should not be automatically closed even when file is deleted"
 9891            );
 9892        });
 9893
 9894        // Verify the item is marked as deleted and still dirty
 9895        item.read_with(cx, |item, _| {
 9896            assert!(
 9897                item.has_deleted_file,
 9898                "Item should be marked as having deleted file"
 9899            );
 9900            assert!(item.is_dirty, "Item should still be dirty");
 9901        });
 9902    }
 9903
 9904    /// Tests that navigation history is cleaned up when files are auto-closed
 9905    /// due to deletion from disk.
 9906    #[gpui::test]
 9907    async fn test_close_on_disk_deletion_cleans_navigation_history(cx: &mut TestAppContext) {
 9908        init_test(cx);
 9909
 9910        // Enable the close_on_file_delete setting
 9911        cx.update_global(|store: &mut SettingsStore, cx| {
 9912            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9913                settings.close_on_file_delete = Some(true);
 9914            });
 9915        });
 9916
 9917        let fs = FakeFs::new(cx.background_executor.clone());
 9918        let project = Project::test(fs, [], cx).await;
 9919        let (workspace, cx) =
 9920            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9921        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9922
 9923        // Create test items
 9924        let item1 = cx.new(|cx| {
 9925            TestItem::new(cx)
 9926                .with_label("test1.txt")
 9927                .with_project_items(&[TestProjectItem::new(1, "test1.txt", cx)])
 9928        });
 9929        let item1_id = item1.item_id();
 9930
 9931        let item2 = cx.new(|cx| {
 9932            TestItem::new(cx)
 9933                .with_label("test2.txt")
 9934                .with_project_items(&[TestProjectItem::new(2, "test2.txt", cx)])
 9935        });
 9936
 9937        // Add items to workspace
 9938        workspace.update_in(cx, |workspace, window, cx| {
 9939            workspace.add_item(
 9940                pane.clone(),
 9941                Box::new(item1.clone()),
 9942                None,
 9943                false,
 9944                false,
 9945                window,
 9946                cx,
 9947            );
 9948            workspace.add_item(
 9949                pane.clone(),
 9950                Box::new(item2.clone()),
 9951                None,
 9952                false,
 9953                false,
 9954                window,
 9955                cx,
 9956            );
 9957        });
 9958
 9959        // Activate item1 to ensure it gets navigation entries
 9960        pane.update_in(cx, |pane, window, cx| {
 9961            pane.activate_item(0, true, true, window, cx);
 9962        });
 9963
 9964        // Switch to item2 and back to create navigation history
 9965        pane.update_in(cx, |pane, window, cx| {
 9966            pane.activate_item(1, true, true, window, cx);
 9967        });
 9968        cx.run_until_parked();
 9969
 9970        pane.update_in(cx, |pane, window, cx| {
 9971            pane.activate_item(0, true, true, window, cx);
 9972        });
 9973        cx.run_until_parked();
 9974
 9975        // Simulate file deletion for item1
 9976        item1.update(cx, |item, _| {
 9977            item.set_has_deleted_file(true);
 9978        });
 9979
 9980        // Emit UpdateTab event to trigger the close behavior
 9981        item1.update(cx, |_, cx| {
 9982            cx.emit(ItemEvent::UpdateTab);
 9983        });
 9984        cx.run_until_parked();
 9985
 9986        // Verify item1 was closed
 9987        pane.read_with(cx, |pane, _| {
 9988            assert_eq!(
 9989                pane.items().count(),
 9990                1,
 9991                "Should have 1 item remaining after auto-close"
 9992            );
 9993        });
 9994
 9995        // Check navigation history after close
 9996        let has_item = pane.read_with(cx, |pane, cx| {
 9997            let mut has_item = false;
 9998            pane.nav_history().for_each_entry(cx, |entry, _| {
 9999                if entry.item.id() == item1_id {
10000                    has_item = true;
10001                }
10002            });
10003            has_item
10004        });
10005
10006        assert!(
10007            !has_item,
10008            "Navigation history should not contain closed item entries"
10009        );
10010    }
10011
10012    #[gpui::test]
10013    async fn test_no_save_prompt_when_dirty_multi_buffer_closed_with_all_of_its_dirty_items_present_in_the_pane(
10014        cx: &mut TestAppContext,
10015    ) {
10016        init_test(cx);
10017
10018        let fs = FakeFs::new(cx.background_executor.clone());
10019        let project = Project::test(fs, [], cx).await;
10020        let (workspace, cx) =
10021            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10022        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10023
10024        let dirty_regular_buffer = cx.new(|cx| {
10025            TestItem::new(cx)
10026                .with_dirty(true)
10027                .with_label("1.txt")
10028                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10029        });
10030        let dirty_regular_buffer_2 = cx.new(|cx| {
10031            TestItem::new(cx)
10032                .with_dirty(true)
10033                .with_label("2.txt")
10034                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10035        });
10036        let clear_regular_buffer = cx.new(|cx| {
10037            TestItem::new(cx)
10038                .with_label("3.txt")
10039                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
10040        });
10041
10042        let dirty_multi_buffer = cx.new(|cx| {
10043            TestItem::new(cx)
10044                .with_dirty(true)
10045                .with_singleton(false)
10046                .with_label("Fake Project Search")
10047                .with_project_items(&[
10048                    dirty_regular_buffer.read(cx).project_items[0].clone(),
10049                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
10050                    clear_regular_buffer.read(cx).project_items[0].clone(),
10051                ])
10052        });
10053        workspace.update_in(cx, |workspace, window, cx| {
10054            workspace.add_item(
10055                pane.clone(),
10056                Box::new(dirty_regular_buffer.clone()),
10057                None,
10058                false,
10059                false,
10060                window,
10061                cx,
10062            );
10063            workspace.add_item(
10064                pane.clone(),
10065                Box::new(dirty_regular_buffer_2.clone()),
10066                None,
10067                false,
10068                false,
10069                window,
10070                cx,
10071            );
10072            workspace.add_item(
10073                pane.clone(),
10074                Box::new(dirty_multi_buffer.clone()),
10075                None,
10076                false,
10077                false,
10078                window,
10079                cx,
10080            );
10081        });
10082
10083        pane.update_in(cx, |pane, window, cx| {
10084            pane.activate_item(2, true, true, window, cx);
10085            assert_eq!(
10086                pane.active_item().unwrap().item_id(),
10087                dirty_multi_buffer.item_id(),
10088                "Should select the multi buffer in the pane"
10089            );
10090        });
10091        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
10092            pane.close_active_item(
10093                &CloseActiveItem {
10094                    save_intent: None,
10095                    close_pinned: false,
10096                },
10097                window,
10098                cx,
10099            )
10100        });
10101        cx.background_executor.run_until_parked();
10102        assert!(
10103            !cx.has_pending_prompt(),
10104            "All dirty items from the multi buffer are in the pane still, no save prompts should be shown"
10105        );
10106        close_multi_buffer_task
10107            .await
10108            .expect("Closing multi buffer failed");
10109        pane.update(cx, |pane, cx| {
10110            assert_eq!(dirty_regular_buffer.read(cx).save_count, 0);
10111            assert_eq!(dirty_multi_buffer.read(cx).save_count, 0);
10112            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 0);
10113            assert_eq!(
10114                pane.items()
10115                    .map(|item| item.item_id())
10116                    .sorted()
10117                    .collect::<Vec<_>>(),
10118                vec![
10119                    dirty_regular_buffer.item_id(),
10120                    dirty_regular_buffer_2.item_id(),
10121                ],
10122                "Should have no multi buffer left in the pane"
10123            );
10124            assert!(dirty_regular_buffer.read(cx).is_dirty);
10125            assert!(dirty_regular_buffer_2.read(cx).is_dirty);
10126        });
10127    }
10128
10129    #[gpui::test]
10130    async fn test_move_focused_panel_to_next_position(cx: &mut gpui::TestAppContext) {
10131        init_test(cx);
10132        let fs = FakeFs::new(cx.executor());
10133        let project = Project::test(fs, [], cx).await;
10134        let (workspace, cx) =
10135            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10136
10137        // Add a new panel to the right dock, opening the dock and setting the
10138        // focus to the new panel.
10139        let panel = workspace.update_in(cx, |workspace, window, cx| {
10140            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
10141            workspace.add_panel(panel.clone(), window, cx);
10142
10143            workspace
10144                .right_dock()
10145                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
10146
10147            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10148
10149            panel
10150        });
10151
10152        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10153        // panel to the next valid position which, in this case, is the left
10154        // dock.
10155        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10156        workspace.update(cx, |workspace, cx| {
10157            assert!(workspace.left_dock().read(cx).is_open());
10158            assert_eq!(panel.read(cx).position, DockPosition::Left);
10159        });
10160
10161        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10162        // panel to the next valid position which, in this case, is the bottom
10163        // dock.
10164        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10165        workspace.update(cx, |workspace, cx| {
10166            assert!(workspace.bottom_dock().read(cx).is_open());
10167            assert_eq!(panel.read(cx).position, DockPosition::Bottom);
10168        });
10169
10170        // Dispatch the `MoveFocusedPanelToNextPosition` action again, this time
10171        // around moving the panel to its initial position, the right dock.
10172        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10173        workspace.update(cx, |workspace, cx| {
10174            assert!(workspace.right_dock().read(cx).is_open());
10175            assert_eq!(panel.read(cx).position, DockPosition::Right);
10176        });
10177
10178        // Remove focus from the panel, ensuring that, if the panel is not
10179        // focused, the `MoveFocusedPanelToNextPosition` action does not update
10180        // the panel's position, so the panel is still in the right dock.
10181        workspace.update_in(cx, |workspace, window, cx| {
10182            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10183        });
10184
10185        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10186        workspace.update(cx, |workspace, cx| {
10187            assert!(workspace.right_dock().read(cx).is_open());
10188            assert_eq!(panel.read(cx).position, DockPosition::Right);
10189        });
10190    }
10191
10192    #[gpui::test]
10193    async fn test_moving_items_create_panes(cx: &mut TestAppContext) {
10194        init_test(cx);
10195
10196        let fs = FakeFs::new(cx.executor());
10197        let project = Project::test(fs, [], cx).await;
10198        let (workspace, cx) =
10199            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10200
10201        let item_1 = cx.new(|cx| {
10202            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10203        });
10204        workspace.update_in(cx, |workspace, window, cx| {
10205            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10206            workspace.move_item_to_pane_in_direction(
10207                &MoveItemToPaneInDirection {
10208                    direction: SplitDirection::Right,
10209                    focus: true,
10210                    clone: false,
10211                },
10212                window,
10213                cx,
10214            );
10215            workspace.move_item_to_pane_at_index(
10216                &MoveItemToPane {
10217                    destination: 3,
10218                    focus: true,
10219                    clone: false,
10220                },
10221                window,
10222                cx,
10223            );
10224
10225            assert_eq!(workspace.panes.len(), 1, "No new panes were created");
10226            assert_eq!(
10227                pane_items_paths(&workspace.active_pane, cx),
10228                vec!["first.txt".to_string()],
10229                "Single item was not moved anywhere"
10230            );
10231        });
10232
10233        let item_2 = cx.new(|cx| {
10234            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "second.txt", cx)])
10235        });
10236        workspace.update_in(cx, |workspace, window, cx| {
10237            workspace.add_item_to_active_pane(Box::new(item_2), None, true, window, cx);
10238            assert_eq!(
10239                pane_items_paths(&workspace.panes[0], cx),
10240                vec!["first.txt".to_string(), "second.txt".to_string()],
10241            );
10242            workspace.move_item_to_pane_in_direction(
10243                &MoveItemToPaneInDirection {
10244                    direction: SplitDirection::Right,
10245                    focus: true,
10246                    clone: false,
10247                },
10248                window,
10249                cx,
10250            );
10251
10252            assert_eq!(workspace.panes.len(), 2, "A new pane should be created");
10253            assert_eq!(
10254                pane_items_paths(&workspace.panes[0], cx),
10255                vec!["first.txt".to_string()],
10256                "After moving, one item should be left in the original pane"
10257            );
10258            assert_eq!(
10259                pane_items_paths(&workspace.panes[1], cx),
10260                vec!["second.txt".to_string()],
10261                "New item should have been moved to the new pane"
10262            );
10263        });
10264
10265        let item_3 = cx.new(|cx| {
10266            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "third.txt", cx)])
10267        });
10268        workspace.update_in(cx, |workspace, window, cx| {
10269            let original_pane = workspace.panes[0].clone();
10270            workspace.set_active_pane(&original_pane, window, cx);
10271            workspace.add_item_to_active_pane(Box::new(item_3), None, true, window, cx);
10272            assert_eq!(workspace.panes.len(), 2, "No new panes were created");
10273            assert_eq!(
10274                pane_items_paths(&workspace.active_pane, cx),
10275                vec!["first.txt".to_string(), "third.txt".to_string()],
10276                "New pane should be ready to move one item out"
10277            );
10278
10279            workspace.move_item_to_pane_at_index(
10280                &MoveItemToPane {
10281                    destination: 3,
10282                    focus: true,
10283                    clone: false,
10284                },
10285                window,
10286                cx,
10287            );
10288            assert_eq!(workspace.panes.len(), 3, "A new pane should be created");
10289            assert_eq!(
10290                pane_items_paths(&workspace.active_pane, cx),
10291                vec!["first.txt".to_string()],
10292                "After moving, one item should be left in the original pane"
10293            );
10294            assert_eq!(
10295                pane_items_paths(&workspace.panes[1], cx),
10296                vec!["second.txt".to_string()],
10297                "Previously created pane should be unchanged"
10298            );
10299            assert_eq!(
10300                pane_items_paths(&workspace.panes[2], cx),
10301                vec!["third.txt".to_string()],
10302                "New item should have been moved to the new pane"
10303            );
10304        });
10305    }
10306
10307    #[gpui::test]
10308    async fn test_moving_items_can_clone_panes(cx: &mut TestAppContext) {
10309        init_test(cx);
10310
10311        let fs = FakeFs::new(cx.executor());
10312        let project = Project::test(fs, [], cx).await;
10313        let (workspace, cx) =
10314            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10315
10316        let item_1 = cx.new(|cx| {
10317            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10318        });
10319        workspace.update_in(cx, |workspace, window, cx| {
10320            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10321            workspace.move_item_to_pane_in_direction(
10322                &MoveItemToPaneInDirection {
10323                    direction: SplitDirection::Right,
10324                    focus: true,
10325                    clone: true,
10326                },
10327                window,
10328                cx,
10329            );
10330            workspace.move_item_to_pane_at_index(
10331                &MoveItemToPane {
10332                    destination: 3,
10333                    focus: true,
10334                    clone: true,
10335                },
10336                window,
10337                cx,
10338            );
10339
10340            assert_eq!(workspace.panes.len(), 3, "Two new panes were created");
10341            for pane in workspace.panes() {
10342                assert_eq!(
10343                    pane_items_paths(pane, cx),
10344                    vec!["first.txt".to_string()],
10345                    "Single item exists in all panes"
10346                );
10347            }
10348        });
10349
10350        // verify that the active pane has been updated after waiting for the
10351        // pane focus event to fire and resolve
10352        workspace.read_with(cx, |workspace, _app| {
10353            assert_eq!(
10354                workspace.active_pane(),
10355                &workspace.panes[2],
10356                "The third pane should be the active one: {:?}",
10357                workspace.panes
10358            );
10359        })
10360    }
10361
10362    mod register_project_item_tests {
10363
10364        use super::*;
10365
10366        // View
10367        struct TestPngItemView {
10368            focus_handle: FocusHandle,
10369        }
10370        // Model
10371        struct TestPngItem {}
10372
10373        impl project::ProjectItem for TestPngItem {
10374            fn try_open(
10375                _project: &Entity<Project>,
10376                path: &ProjectPath,
10377                cx: &mut App,
10378            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10379                if path.path.extension().unwrap() == "png" {
10380                    Some(cx.spawn(async move |cx| cx.new(|_| TestPngItem {})))
10381                } else {
10382                    None
10383                }
10384            }
10385
10386            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10387                None
10388            }
10389
10390            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10391                None
10392            }
10393
10394            fn is_dirty(&self) -> bool {
10395                false
10396            }
10397        }
10398
10399        impl Item for TestPngItemView {
10400            type Event = ();
10401            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10402                "".into()
10403            }
10404        }
10405        impl EventEmitter<()> for TestPngItemView {}
10406        impl Focusable for TestPngItemView {
10407            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10408                self.focus_handle.clone()
10409            }
10410        }
10411
10412        impl Render for TestPngItemView {
10413            fn render(
10414                &mut self,
10415                _window: &mut Window,
10416                _cx: &mut Context<Self>,
10417            ) -> impl IntoElement {
10418                Empty
10419            }
10420        }
10421
10422        impl ProjectItem for TestPngItemView {
10423            type Item = TestPngItem;
10424
10425            fn for_project_item(
10426                _project: Entity<Project>,
10427                _pane: Option<&Pane>,
10428                _item: Entity<Self::Item>,
10429                _: &mut Window,
10430                cx: &mut Context<Self>,
10431            ) -> Self
10432            where
10433                Self: Sized,
10434            {
10435                Self {
10436                    focus_handle: cx.focus_handle(),
10437                }
10438            }
10439        }
10440
10441        // View
10442        struct TestIpynbItemView {
10443            focus_handle: FocusHandle,
10444        }
10445        // Model
10446        struct TestIpynbItem {}
10447
10448        impl project::ProjectItem for TestIpynbItem {
10449            fn try_open(
10450                _project: &Entity<Project>,
10451                path: &ProjectPath,
10452                cx: &mut App,
10453            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10454                if path.path.extension().unwrap() == "ipynb" {
10455                    Some(cx.spawn(async move |cx| cx.new(|_| TestIpynbItem {})))
10456                } else {
10457                    None
10458                }
10459            }
10460
10461            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10462                None
10463            }
10464
10465            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10466                None
10467            }
10468
10469            fn is_dirty(&self) -> bool {
10470                false
10471            }
10472        }
10473
10474        impl Item for TestIpynbItemView {
10475            type Event = ();
10476            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10477                "".into()
10478            }
10479        }
10480        impl EventEmitter<()> for TestIpynbItemView {}
10481        impl Focusable for TestIpynbItemView {
10482            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10483                self.focus_handle.clone()
10484            }
10485        }
10486
10487        impl Render for TestIpynbItemView {
10488            fn render(
10489                &mut self,
10490                _window: &mut Window,
10491                _cx: &mut Context<Self>,
10492            ) -> impl IntoElement {
10493                Empty
10494            }
10495        }
10496
10497        impl ProjectItem for TestIpynbItemView {
10498            type Item = TestIpynbItem;
10499
10500            fn for_project_item(
10501                _project: Entity<Project>,
10502                _pane: Option<&Pane>,
10503                _item: Entity<Self::Item>,
10504                _: &mut Window,
10505                cx: &mut Context<Self>,
10506            ) -> Self
10507            where
10508                Self: Sized,
10509            {
10510                Self {
10511                    focus_handle: cx.focus_handle(),
10512                }
10513            }
10514        }
10515
10516        struct TestAlternatePngItemView {
10517            focus_handle: FocusHandle,
10518        }
10519
10520        impl Item for TestAlternatePngItemView {
10521            type Event = ();
10522            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10523                "".into()
10524            }
10525        }
10526
10527        impl EventEmitter<()> for TestAlternatePngItemView {}
10528        impl Focusable for TestAlternatePngItemView {
10529            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10530                self.focus_handle.clone()
10531            }
10532        }
10533
10534        impl Render for TestAlternatePngItemView {
10535            fn render(
10536                &mut self,
10537                _window: &mut Window,
10538                _cx: &mut Context<Self>,
10539            ) -> impl IntoElement {
10540                Empty
10541            }
10542        }
10543
10544        impl ProjectItem for TestAlternatePngItemView {
10545            type Item = TestPngItem;
10546
10547            fn for_project_item(
10548                _project: Entity<Project>,
10549                _pane: Option<&Pane>,
10550                _item: Entity<Self::Item>,
10551                _: &mut Window,
10552                cx: &mut Context<Self>,
10553            ) -> Self
10554            where
10555                Self: Sized,
10556            {
10557                Self {
10558                    focus_handle: cx.focus_handle(),
10559                }
10560            }
10561        }
10562
10563        #[gpui::test]
10564        async fn test_register_project_item(cx: &mut TestAppContext) {
10565            init_test(cx);
10566
10567            cx.update(|cx| {
10568                register_project_item::<TestPngItemView>(cx);
10569                register_project_item::<TestIpynbItemView>(cx);
10570            });
10571
10572            let fs = FakeFs::new(cx.executor());
10573            fs.insert_tree(
10574                "/root1",
10575                json!({
10576                    "one.png": "BINARYDATAHERE",
10577                    "two.ipynb": "{ totally a notebook }",
10578                    "three.txt": "editing text, sure why not?"
10579                }),
10580            )
10581            .await;
10582
10583            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10584            let (workspace, cx) =
10585                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10586
10587            let worktree_id = project.update(cx, |project, cx| {
10588                project.worktrees(cx).next().unwrap().read(cx).id()
10589            });
10590
10591            let handle = workspace
10592                .update_in(cx, |workspace, window, cx| {
10593                    let project_path = (worktree_id, "one.png");
10594                    workspace.open_path(project_path, None, true, window, cx)
10595                })
10596                .await
10597                .unwrap();
10598
10599            // Now we can check if the handle we got back errored or not
10600            assert_eq!(
10601                handle.to_any().entity_type(),
10602                TypeId::of::<TestPngItemView>()
10603            );
10604
10605            let handle = workspace
10606                .update_in(cx, |workspace, window, cx| {
10607                    let project_path = (worktree_id, "two.ipynb");
10608                    workspace.open_path(project_path, None, true, window, cx)
10609                })
10610                .await
10611                .unwrap();
10612
10613            assert_eq!(
10614                handle.to_any().entity_type(),
10615                TypeId::of::<TestIpynbItemView>()
10616            );
10617
10618            let handle = workspace
10619                .update_in(cx, |workspace, window, cx| {
10620                    let project_path = (worktree_id, "three.txt");
10621                    workspace.open_path(project_path, None, true, window, cx)
10622                })
10623                .await;
10624            assert!(handle.is_err());
10625        }
10626
10627        #[gpui::test]
10628        async fn test_register_project_item_two_enter_one_leaves(cx: &mut TestAppContext) {
10629            init_test(cx);
10630
10631            cx.update(|cx| {
10632                register_project_item::<TestPngItemView>(cx);
10633                register_project_item::<TestAlternatePngItemView>(cx);
10634            });
10635
10636            let fs = FakeFs::new(cx.executor());
10637            fs.insert_tree(
10638                "/root1",
10639                json!({
10640                    "one.png": "BINARYDATAHERE",
10641                    "two.ipynb": "{ totally a notebook }",
10642                    "three.txt": "editing text, sure why not?"
10643                }),
10644            )
10645            .await;
10646            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10647            let (workspace, cx) =
10648                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10649            let worktree_id = project.update(cx, |project, cx| {
10650                project.worktrees(cx).next().unwrap().read(cx).id()
10651            });
10652
10653            let handle = workspace
10654                .update_in(cx, |workspace, window, cx| {
10655                    let project_path = (worktree_id, "one.png");
10656                    workspace.open_path(project_path, None, true, window, cx)
10657                })
10658                .await
10659                .unwrap();
10660
10661            // This _must_ be the second item registered
10662            assert_eq!(
10663                handle.to_any().entity_type(),
10664                TypeId::of::<TestAlternatePngItemView>()
10665            );
10666
10667            let handle = workspace
10668                .update_in(cx, |workspace, window, cx| {
10669                    let project_path = (worktree_id, "three.txt");
10670                    workspace.open_path(project_path, None, true, window, cx)
10671                })
10672                .await;
10673            assert!(handle.is_err());
10674        }
10675    }
10676
10677    fn pane_items_paths(pane: &Entity<Pane>, cx: &App) -> Vec<String> {
10678        pane.read(cx)
10679            .items()
10680            .flat_map(|item| {
10681                item.project_paths(cx)
10682                    .into_iter()
10683                    .map(|path| path.path.to_string_lossy().to_string())
10684            })
10685            .collect()
10686    }
10687
10688    pub fn init_test(cx: &mut TestAppContext) {
10689        cx.update(|cx| {
10690            let settings_store = SettingsStore::test(cx);
10691            cx.set_global(settings_store);
10692            theme::init(theme::LoadThemes::JustBase, cx);
10693            language::init(cx);
10694            crate::init_settings(cx);
10695            Project::init_settings(cx);
10696        });
10697    }
10698
10699    fn dirty_project_item(id: u64, path: &str, cx: &mut App) -> Entity<TestProjectItem> {
10700        let item = TestProjectItem::new(id, path, cx);
10701        item.update(cx, |item, _| {
10702            item.is_dirty = true;
10703        });
10704        item
10705    }
10706}