workspace.rs

    1pub mod dock;
    2pub mod history_manager;
    3pub mod invalid_buffer_view;
    4pub mod item;
    5mod modal_layer;
    6pub mod notifications;
    7pub mod pane;
    8pub mod pane_group;
    9mod path_list;
   10mod persistence;
   11pub mod searchable;
   12pub mod shared_screen;
   13mod status_bar;
   14pub mod tasks;
   15mod theme_preview;
   16mod toast_layer;
   17mod toolbar;
   18mod workspace_settings;
   19
   20pub use crate::notifications::NotificationFrame;
   21pub use dock::Panel;
   22pub use path_list::PathList;
   23pub use toast_layer::{ToastAction, ToastLayer, ToastView};
   24
   25use anyhow::{Context as _, Result, anyhow};
   26use call::{ActiveCall, call_settings::CallSettings};
   27use client::{
   28    ChannelId, Client, ErrorExt, Status, TypedEnvelope, UserStore,
   29    proto::{self, ErrorCode, PanelId, PeerId},
   30};
   31use collections::{HashMap, HashSet, hash_map};
   32use dock::{Dock, DockPosition, PanelButtons, PanelHandle, RESIZE_HANDLE_SIZE};
   33use futures::{
   34    Future, FutureExt, StreamExt,
   35    channel::{
   36        mpsc::{self, UnboundedReceiver, UnboundedSender},
   37        oneshot,
   38    },
   39    future::{Shared, try_join_all},
   40};
   41use gpui::{
   42    Action, AnyEntity, AnyView, AnyWeakView, App, AsyncApp, AsyncWindowContext, Bounds, Context,
   43    CursorStyle, Decorations, DragMoveEvent, Entity, EntityId, EventEmitter, FocusHandle,
   44    Focusable, Global, HitboxBehavior, Hsla, KeyContext, Keystroke, ManagedView, MouseButton,
   45    PathPromptOptions, Point, PromptLevel, Render, ResizeEdge, Size, Stateful, Subscription, Task,
   46    Tiling, WeakEntity, WindowBounds, WindowHandle, WindowId, WindowOptions, actions, canvas,
   47    point, relative, size, transparent_black,
   48};
   49pub use history_manager::*;
   50pub use item::{
   51    FollowableItem, FollowableItemHandle, Item, ItemHandle, ItemSettings, PreviewTabsSettings,
   52    ProjectItem, SerializableItem, SerializableItemHandle, WeakItemHandle,
   53};
   54use itertools::Itertools;
   55use language::{
   56    Buffer, LanguageRegistry, Rope,
   57    language_settings::{AllLanguageSettings, all_language_settings},
   58};
   59pub use modal_layer::*;
   60use node_runtime::NodeRuntime;
   61use notifications::{
   62    DetachAndPromptErr, Notifications, dismiss_app_notification,
   63    simple_message_notification::MessageNotification,
   64};
   65pub use pane::*;
   66pub use pane_group::*;
   67use persistence::{DB, SerializedWindowBounds, model::SerializedWorkspace};
   68pub use persistence::{
   69    DB as WORKSPACE_DB, WorkspaceDb, delete_unloaded_items,
   70    model::{ItemId, SerializedSshConnection, SerializedWorkspaceLocation},
   71};
   72use postage::stream::Stream;
   73use project::{
   74    DirectoryLister, Project, ProjectEntryId, ProjectPath, ResolvedPath, Worktree, WorktreeId,
   75    debugger::{breakpoint_store::BreakpointStoreEvent, session::ThreadStatus},
   76};
   77use remote::{SshClientDelegate, SshConnectionOptions, ssh_session::ConnectionIdentifier};
   78use schemars::JsonSchema;
   79use serde::Deserialize;
   80use session::AppSession;
   81use settings::{Settings, update_settings_file};
   82use shared_screen::SharedScreen;
   83use sqlez::{
   84    bindable::{Bind, Column, StaticColumnCount},
   85    statement::Statement,
   86};
   87use status_bar::StatusBar;
   88pub use status_bar::StatusItemView;
   89use std::{
   90    any::TypeId,
   91    borrow::Cow,
   92    cell::RefCell,
   93    cmp,
   94    collections::{VecDeque, hash_map::DefaultHasher},
   95    env,
   96    hash::{Hash, Hasher},
   97    path::{Path, PathBuf},
   98    process::ExitStatus,
   99    rc::Rc,
  100    sync::{Arc, LazyLock, Weak, atomic::AtomicUsize},
  101    time::Duration,
  102};
  103use task::{DebugScenario, SpawnInTerminal, TaskContext};
  104use theme::{ActiveTheme, SystemAppearance, ThemeSettings};
  105pub use toolbar::{Toolbar, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView};
  106pub use ui;
  107use ui::{Window, prelude::*};
  108use util::{ResultExt, TryFutureExt, paths::SanitizedPath, serde::default_true};
  109use uuid::Uuid;
  110pub use workspace_settings::{
  111    AutosaveSetting, BottomDockLayout, RestoreOnStartupBehavior, TabBarSettings, WorkspaceSettings,
  112};
  113use zed_actions::{Spawn, feedback::FileBugReport};
  114
  115use crate::notifications::NotificationId;
  116use crate::persistence::{
  117    SerializedAxis,
  118    model::{DockData, DockStructure, SerializedItem, SerializedPane, SerializedPaneGroup},
  119};
  120
  121pub const SERIALIZATION_THROTTLE_TIME: Duration = Duration::from_millis(200);
  122
  123static ZED_WINDOW_SIZE: LazyLock<Option<Size<Pixels>>> = LazyLock::new(|| {
  124    env::var("ZED_WINDOW_SIZE")
  125        .ok()
  126        .as_deref()
  127        .and_then(parse_pixel_size_env_var)
  128});
  129
  130static ZED_WINDOW_POSITION: LazyLock<Option<Point<Pixels>>> = LazyLock::new(|| {
  131    env::var("ZED_WINDOW_POSITION")
  132        .ok()
  133        .as_deref()
  134        .and_then(parse_pixel_position_env_var)
  135});
  136
  137pub trait TerminalProvider {
  138    fn spawn(
  139        &self,
  140        task: SpawnInTerminal,
  141        window: &mut Window,
  142        cx: &mut App,
  143    ) -> Task<Option<Result<ExitStatus>>>;
  144}
  145
  146pub trait DebuggerProvider {
  147    // `active_buffer` is used to resolve build task's name against language-specific tasks.
  148    fn start_session(
  149        &self,
  150        definition: DebugScenario,
  151        task_context: TaskContext,
  152        active_buffer: Option<Entity<Buffer>>,
  153        worktree_id: Option<WorktreeId>,
  154        window: &mut Window,
  155        cx: &mut App,
  156    );
  157
  158    fn spawn_task_or_modal(
  159        &self,
  160        workspace: &mut Workspace,
  161        action: &Spawn,
  162        window: &mut Window,
  163        cx: &mut Context<Workspace>,
  164    );
  165
  166    fn task_scheduled(&self, cx: &mut App);
  167    fn debug_scenario_scheduled(&self, cx: &mut App);
  168    fn debug_scenario_scheduled_last(&self, cx: &App) -> bool;
  169
  170    fn active_thread_state(&self, cx: &App) -> Option<ThreadStatus>;
  171}
  172
  173actions!(
  174    workspace,
  175    [
  176        /// Activates the next pane in the workspace.
  177        ActivateNextPane,
  178        /// Activates the previous pane in the workspace.
  179        ActivatePreviousPane,
  180        /// Switches to the next window.
  181        ActivateNextWindow,
  182        /// Switches to the previous window.
  183        ActivatePreviousWindow,
  184        /// Adds a folder to the current project.
  185        AddFolderToProject,
  186        /// Clears all notifications.
  187        ClearAllNotifications,
  188        /// Closes the active dock.
  189        CloseActiveDock,
  190        /// Closes all docks.
  191        CloseAllDocks,
  192        /// Closes the current window.
  193        CloseWindow,
  194        /// Opens the feedback dialog.
  195        Feedback,
  196        /// Follows the next collaborator in the session.
  197        FollowNextCollaborator,
  198        /// Moves the focused panel to the next position.
  199        MoveFocusedPanelToNextPosition,
  200        /// Opens a new terminal in the center.
  201        NewCenterTerminal,
  202        /// Creates a new file.
  203        NewFile,
  204        /// Creates a new file in a vertical split.
  205        NewFileSplitVertical,
  206        /// Creates a new file in a horizontal split.
  207        NewFileSplitHorizontal,
  208        /// Opens a new search.
  209        NewSearch,
  210        /// Opens a new terminal.
  211        NewTerminal,
  212        /// Opens a new window.
  213        NewWindow,
  214        /// Opens a file or directory.
  215        Open,
  216        /// Opens multiple files.
  217        OpenFiles,
  218        /// Opens the current location in terminal.
  219        OpenInTerminal,
  220        /// Opens the component preview.
  221        OpenComponentPreview,
  222        /// Reloads the active item.
  223        ReloadActiveItem,
  224        /// Resets the active dock to its default size.
  225        ResetActiveDockSize,
  226        /// Resets all open docks to their default sizes.
  227        ResetOpenDocksSize,
  228        /// Reloads the application
  229        Reload,
  230        /// Saves the current file with a new name.
  231        SaveAs,
  232        /// Saves without formatting.
  233        SaveWithoutFormat,
  234        /// Shuts down all debug adapters.
  235        ShutdownDebugAdapters,
  236        /// Suppresses the current notification.
  237        SuppressNotification,
  238        /// Toggles the bottom dock.
  239        ToggleBottomDock,
  240        /// Toggles centered layout mode.
  241        ToggleCenteredLayout,
  242        /// Toggles edit prediction feature globally for all files.
  243        ToggleEditPrediction,
  244        /// Toggles the left dock.
  245        ToggleLeftDock,
  246        /// Toggles the right dock.
  247        ToggleRightDock,
  248        /// Toggles zoom on the active pane.
  249        ToggleZoom,
  250        /// Stops following a collaborator.
  251        Unfollow,
  252        /// Restores the banner.
  253        RestoreBanner,
  254        /// Toggles expansion of the selected item.
  255        ToggleExpandItem,
  256    ]
  257);
  258
  259/// Activates a specific pane by its index.
  260#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  261#[action(namespace = workspace)]
  262pub struct ActivatePane(pub usize);
  263
  264/// Moves an item to a specific pane by index.
  265#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  266#[action(namespace = workspace)]
  267#[serde(deny_unknown_fields)]
  268pub struct MoveItemToPane {
  269    #[serde(default = "default_1")]
  270    pub destination: usize,
  271    #[serde(default = "default_true")]
  272    pub focus: bool,
  273    #[serde(default)]
  274    pub clone: bool,
  275}
  276
  277fn default_1() -> usize {
  278    1
  279}
  280
  281/// Moves an item to a pane in the specified direction.
  282#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  283#[action(namespace = workspace)]
  284#[serde(deny_unknown_fields)]
  285pub struct MoveItemToPaneInDirection {
  286    #[serde(default = "default_right")]
  287    pub direction: SplitDirection,
  288    #[serde(default = "default_true")]
  289    pub focus: bool,
  290    #[serde(default)]
  291    pub clone: bool,
  292}
  293
  294fn default_right() -> SplitDirection {
  295    SplitDirection::Right
  296}
  297
  298/// Saves all open files in the workspace.
  299#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  300#[action(namespace = workspace)]
  301#[serde(deny_unknown_fields)]
  302pub struct SaveAll {
  303    #[serde(default)]
  304    pub save_intent: Option<SaveIntent>,
  305}
  306
  307/// Saves the current file with the specified options.
  308#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  309#[action(namespace = workspace)]
  310#[serde(deny_unknown_fields)]
  311pub struct Save {
  312    #[serde(default)]
  313    pub save_intent: Option<SaveIntent>,
  314}
  315
  316/// Closes all items and panes in the workspace.
  317#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  318#[action(namespace = workspace)]
  319#[serde(deny_unknown_fields)]
  320pub struct CloseAllItemsAndPanes {
  321    #[serde(default)]
  322    pub save_intent: Option<SaveIntent>,
  323}
  324
  325/// Closes all inactive tabs and panes in the workspace.
  326#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  327#[action(namespace = workspace)]
  328#[serde(deny_unknown_fields)]
  329pub struct CloseInactiveTabsAndPanes {
  330    #[serde(default)]
  331    pub save_intent: Option<SaveIntent>,
  332}
  333
  334/// Sends a sequence of keystrokes to the active element.
  335#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  336#[action(namespace = workspace)]
  337pub struct SendKeystrokes(pub String);
  338
  339actions!(
  340    project_symbols,
  341    [
  342        /// Toggles the project symbols search.
  343        #[action(name = "Toggle")]
  344        ToggleProjectSymbols
  345    ]
  346);
  347
  348/// Toggles the file finder interface.
  349#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  350#[action(namespace = file_finder, name = "Toggle")]
  351#[serde(deny_unknown_fields)]
  352pub struct ToggleFileFinder {
  353    #[serde(default)]
  354    pub separate_history: bool,
  355}
  356
  357/// Increases size of a currently focused dock by a given amount of pixels.
  358#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  359#[action(namespace = workspace)]
  360#[serde(deny_unknown_fields)]
  361pub struct IncreaseActiveDockSize {
  362    /// For 0px parameter, uses UI font size value.
  363    #[serde(default)]
  364    pub px: u32,
  365}
  366
  367/// Decreases size of a currently focused dock by a given amount of pixels.
  368#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  369#[action(namespace = workspace)]
  370#[serde(deny_unknown_fields)]
  371pub struct DecreaseActiveDockSize {
  372    /// For 0px parameter, uses UI font size value.
  373    #[serde(default)]
  374    pub px: u32,
  375}
  376
  377/// Increases size of all currently visible docks uniformly, by a given amount of pixels.
  378#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  379#[action(namespace = workspace)]
  380#[serde(deny_unknown_fields)]
  381pub struct IncreaseOpenDocksSize {
  382    /// For 0px parameter, uses UI font size value.
  383    #[serde(default)]
  384    pub px: u32,
  385}
  386
  387/// Decreases size of all currently visible docks uniformly, by a given amount of pixels.
  388#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  389#[action(namespace = workspace)]
  390#[serde(deny_unknown_fields)]
  391pub struct DecreaseOpenDocksSize {
  392    /// For 0px parameter, uses UI font size value.
  393    #[serde(default)]
  394    pub px: u32,
  395}
  396
  397actions!(
  398    workspace,
  399    [
  400        /// Activates the pane to the left.
  401        ActivatePaneLeft,
  402        /// Activates the pane to the right.
  403        ActivatePaneRight,
  404        /// Activates the pane above.
  405        ActivatePaneUp,
  406        /// Activates the pane below.
  407        ActivatePaneDown,
  408        /// Swaps the current pane with the one to the left.
  409        SwapPaneLeft,
  410        /// Swaps the current pane with the one to the right.
  411        SwapPaneRight,
  412        /// Swaps the current pane with the one above.
  413        SwapPaneUp,
  414        /// Swaps the current pane with the one below.
  415        SwapPaneDown,
  416    ]
  417);
  418
  419#[derive(PartialEq, Eq, Debug)]
  420pub enum CloseIntent {
  421    /// Quit the program entirely.
  422    Quit,
  423    /// Close a window.
  424    CloseWindow,
  425    /// Replace the workspace in an existing window.
  426    ReplaceWindow,
  427}
  428
  429#[derive(Clone)]
  430pub struct Toast {
  431    id: NotificationId,
  432    msg: Cow<'static, str>,
  433    autohide: bool,
  434    on_click: Option<(Cow<'static, str>, Arc<dyn Fn(&mut Window, &mut App)>)>,
  435}
  436
  437impl Toast {
  438    pub fn new<I: Into<Cow<'static, str>>>(id: NotificationId, msg: I) -> Self {
  439        Toast {
  440            id,
  441            msg: msg.into(),
  442            on_click: None,
  443            autohide: false,
  444        }
  445    }
  446
  447    pub fn on_click<F, M>(mut self, message: M, on_click: F) -> Self
  448    where
  449        M: Into<Cow<'static, str>>,
  450        F: Fn(&mut Window, &mut App) + 'static,
  451    {
  452        self.on_click = Some((message.into(), Arc::new(on_click)));
  453        self
  454    }
  455
  456    pub fn autohide(mut self) -> Self {
  457        self.autohide = true;
  458        self
  459    }
  460}
  461
  462impl PartialEq for Toast {
  463    fn eq(&self, other: &Self) -> bool {
  464        self.id == other.id
  465            && self.msg == other.msg
  466            && self.on_click.is_some() == other.on_click.is_some()
  467    }
  468}
  469
  470/// Opens a new terminal with the specified working directory.
  471#[derive(Debug, Default, Clone, Deserialize, PartialEq, JsonSchema, Action)]
  472#[action(namespace = workspace)]
  473#[serde(deny_unknown_fields)]
  474pub struct OpenTerminal {
  475    pub working_directory: PathBuf,
  476}
  477
  478#[derive(Clone, Copy, Debug, Default, Hash, PartialEq, Eq, PartialOrd, Ord)]
  479pub struct WorkspaceId(i64);
  480
  481impl StaticColumnCount for WorkspaceId {}
  482impl Bind for WorkspaceId {
  483    fn bind(&self, statement: &Statement, start_index: i32) -> Result<i32> {
  484        self.0.bind(statement, start_index)
  485    }
  486}
  487impl Column for WorkspaceId {
  488    fn column(statement: &mut Statement, start_index: i32) -> Result<(Self, i32)> {
  489        i64::column(statement, start_index)
  490            .map(|(i, next_index)| (Self(i), next_index))
  491            .with_context(|| format!("Failed to read WorkspaceId at index {start_index}"))
  492    }
  493}
  494impl From<WorkspaceId> for i64 {
  495    fn from(val: WorkspaceId) -> Self {
  496        val.0
  497    }
  498}
  499
  500pub fn init_settings(cx: &mut App) {
  501    WorkspaceSettings::register(cx);
  502    ItemSettings::register(cx);
  503    PreviewTabsSettings::register(cx);
  504    TabBarSettings::register(cx);
  505}
  506
  507fn prompt_and_open_paths(app_state: Arc<AppState>, options: PathPromptOptions, cx: &mut App) {
  508    let paths = cx.prompt_for_paths(options);
  509    cx.spawn(
  510        async move |cx| match paths.await.anyhow().and_then(|res| res) {
  511            Ok(Some(paths)) => {
  512                cx.update(|cx| {
  513                    open_paths(&paths, app_state, OpenOptions::default(), cx).detach_and_log_err(cx)
  514                })
  515                .ok();
  516            }
  517            Ok(None) => {}
  518            Err(err) => {
  519                util::log_err(&err);
  520                cx.update(|cx| {
  521                    if let Some(workspace_window) = cx
  522                        .active_window()
  523                        .and_then(|window| window.downcast::<Workspace>())
  524                    {
  525                        workspace_window
  526                            .update(cx, |workspace, _, cx| {
  527                                workspace.show_portal_error(err.to_string(), cx);
  528                            })
  529                            .ok();
  530                    }
  531                })
  532                .ok();
  533            }
  534        },
  535    )
  536    .detach();
  537}
  538
  539pub fn init(app_state: Arc<AppState>, cx: &mut App) {
  540    init_settings(cx);
  541    component::init();
  542    theme_preview::init(cx);
  543    toast_layer::init(cx);
  544    history_manager::init(cx);
  545
  546    cx.on_action(|_: &CloseWindow, cx| Workspace::close_global(cx));
  547    cx.on_action(|_: &Reload, cx| reload(cx));
  548
  549    cx.on_action({
  550        let app_state = Arc::downgrade(&app_state);
  551        move |_: &Open, cx: &mut App| {
  552            if let Some(app_state) = app_state.upgrade() {
  553                prompt_and_open_paths(
  554                    app_state,
  555                    PathPromptOptions {
  556                        files: true,
  557                        directories: true,
  558                        multiple: true,
  559                        prompt: None,
  560                    },
  561                    cx,
  562                );
  563            }
  564        }
  565    });
  566    cx.on_action({
  567        let app_state = Arc::downgrade(&app_state);
  568        move |_: &OpenFiles, cx: &mut App| {
  569            let directories = cx.can_select_mixed_files_and_dirs();
  570            if let Some(app_state) = app_state.upgrade() {
  571                prompt_and_open_paths(
  572                    app_state,
  573                    PathPromptOptions {
  574                        files: true,
  575                        directories,
  576                        multiple: true,
  577                        prompt: None,
  578                    },
  579                    cx,
  580                );
  581            }
  582        }
  583    });
  584}
  585
  586type BuildProjectItemFn =
  587    fn(AnyEntity, Entity<Project>, Option<&Pane>, &mut Window, &mut App) -> Box<dyn ItemHandle>;
  588
  589type BuildProjectItemForPathFn =
  590    fn(
  591        &Entity<Project>,
  592        &ProjectPath,
  593        &mut Window,
  594        &mut App,
  595    ) -> Option<Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>>>;
  596
  597#[derive(Clone, Default)]
  598struct ProjectItemRegistry {
  599    build_project_item_fns_by_type: HashMap<TypeId, BuildProjectItemFn>,
  600    build_project_item_for_path_fns: Vec<BuildProjectItemForPathFn>,
  601}
  602
  603impl ProjectItemRegistry {
  604    fn register<T: ProjectItem>(&mut self) {
  605        self.build_project_item_fns_by_type.insert(
  606            TypeId::of::<T::Item>(),
  607            |item, project, pane, window, cx| {
  608                let item = item.downcast().unwrap();
  609                Box::new(cx.new(|cx| T::for_project_item(project, pane, item, window, cx)))
  610                    as Box<dyn ItemHandle>
  611            },
  612        );
  613        self.build_project_item_for_path_fns
  614            .push(|project, project_path, window, cx| {
  615                let project_path = project_path.clone();
  616                let abs_path = project.read(cx).absolute_path(&project_path, cx);
  617                let is_local = project.read(cx).is_local();
  618                let project_item =
  619                    <T::Item as project::ProjectItem>::try_open(project, &project_path, cx)?;
  620                let project = project.clone();
  621                Some(window.spawn(cx, async move |cx| match project_item.await {
  622                    Ok(project_item) => {
  623                        let project_item = project_item;
  624                        let project_entry_id: Option<ProjectEntryId> =
  625                            project_item.read_with(cx, project::ProjectItem::entry_id)?;
  626                        let build_workspace_item = Box::new(
  627                            |pane: &mut Pane, window: &mut Window, cx: &mut Context<Pane>| {
  628                                Box::new(cx.new(|cx| {
  629                                    T::for_project_item(
  630                                        project,
  631                                        Some(pane),
  632                                        project_item,
  633                                        window,
  634                                        cx,
  635                                    )
  636                                })) as Box<dyn ItemHandle>
  637                            },
  638                        ) as Box<_>;
  639                        Ok((project_entry_id, build_workspace_item))
  640                    }
  641                    Err(e) => match abs_path {
  642                        Some(abs_path) => match cx.update(|window, cx| {
  643                            T::for_broken_project_item(abs_path, is_local, &e, window, cx)
  644                        })? {
  645                            Some(broken_project_item_view) => {
  646                                let build_workspace_item = Box::new(
  647                                    move |_: &mut Pane, _: &mut Window, cx: &mut Context<Pane>| {
  648                                        cx.new(|_| broken_project_item_view).boxed_clone()
  649                                    },
  650                                )
  651                                    as Box<_>;
  652                                Ok((None, build_workspace_item))
  653                            }
  654                            None => Err(e)?,
  655                        },
  656                        None => Err(e)?,
  657                    },
  658                }))
  659            });
  660    }
  661
  662    fn open_path(
  663        &self,
  664        project: &Entity<Project>,
  665        path: &ProjectPath,
  666        window: &mut Window,
  667        cx: &mut App,
  668    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
  669        let Some(open_project_item) = self
  670            .build_project_item_for_path_fns
  671            .iter()
  672            .rev()
  673            .find_map(|open_project_item| open_project_item(project, path, window, cx))
  674        else {
  675            return Task::ready(Err(anyhow!("cannot open file {:?}", path.path)));
  676        };
  677        open_project_item
  678    }
  679
  680    fn build_item<T: project::ProjectItem>(
  681        &self,
  682        item: Entity<T>,
  683        project: Entity<Project>,
  684        pane: Option<&Pane>,
  685        window: &mut Window,
  686        cx: &mut App,
  687    ) -> Option<Box<dyn ItemHandle>> {
  688        let build = self
  689            .build_project_item_fns_by_type
  690            .get(&TypeId::of::<T>())?;
  691        Some(build(item.into_any(), project, pane, window, cx))
  692    }
  693}
  694
  695type WorkspaceItemBuilder =
  696    Box<dyn FnOnce(&mut Pane, &mut Window, &mut Context<Pane>) -> Box<dyn ItemHandle>>;
  697
  698impl Global for ProjectItemRegistry {}
  699
  700/// Registers a [ProjectItem] for the app. When opening a file, all the registered
  701/// items will get a chance to open the file, starting from the project item that
  702/// was added last.
  703pub fn register_project_item<I: ProjectItem>(cx: &mut App) {
  704    cx.default_global::<ProjectItemRegistry>().register::<I>();
  705}
  706
  707#[derive(Default)]
  708pub struct FollowableViewRegistry(HashMap<TypeId, FollowableViewDescriptor>);
  709
  710struct FollowableViewDescriptor {
  711    from_state_proto: fn(
  712        Entity<Workspace>,
  713        ViewId,
  714        &mut Option<proto::view::Variant>,
  715        &mut Window,
  716        &mut App,
  717    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>>,
  718    to_followable_view: fn(&AnyView) -> Box<dyn FollowableItemHandle>,
  719}
  720
  721impl Global for FollowableViewRegistry {}
  722
  723impl FollowableViewRegistry {
  724    pub fn register<I: FollowableItem>(cx: &mut App) {
  725        cx.default_global::<Self>().0.insert(
  726            TypeId::of::<I>(),
  727            FollowableViewDescriptor {
  728                from_state_proto: |workspace, id, state, window, cx| {
  729                    I::from_state_proto(workspace, id, state, window, cx).map(|task| {
  730                        cx.foreground_executor()
  731                            .spawn(async move { Ok(Box::new(task.await?) as Box<_>) })
  732                    })
  733                },
  734                to_followable_view: |view| Box::new(view.clone().downcast::<I>().unwrap()),
  735            },
  736        );
  737    }
  738
  739    pub fn from_state_proto(
  740        workspace: Entity<Workspace>,
  741        view_id: ViewId,
  742        mut state: Option<proto::view::Variant>,
  743        window: &mut Window,
  744        cx: &mut App,
  745    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>> {
  746        cx.update_default_global(|this: &mut Self, cx| {
  747            this.0.values().find_map(|descriptor| {
  748                (descriptor.from_state_proto)(workspace.clone(), view_id, &mut state, window, cx)
  749            })
  750        })
  751    }
  752
  753    pub fn to_followable_view(
  754        view: impl Into<AnyView>,
  755        cx: &App,
  756    ) -> Option<Box<dyn FollowableItemHandle>> {
  757        let this = cx.try_global::<Self>()?;
  758        let view = view.into();
  759        let descriptor = this.0.get(&view.entity_type())?;
  760        Some((descriptor.to_followable_view)(&view))
  761    }
  762}
  763
  764#[derive(Copy, Clone)]
  765struct SerializableItemDescriptor {
  766    deserialize: fn(
  767        Entity<Project>,
  768        WeakEntity<Workspace>,
  769        WorkspaceId,
  770        ItemId,
  771        &mut Window,
  772        &mut Context<Pane>,
  773    ) -> Task<Result<Box<dyn ItemHandle>>>,
  774    cleanup: fn(WorkspaceId, Vec<ItemId>, &mut Window, &mut App) -> Task<Result<()>>,
  775    view_to_serializable_item: fn(AnyView) -> Box<dyn SerializableItemHandle>,
  776}
  777
  778#[derive(Default)]
  779struct SerializableItemRegistry {
  780    descriptors_by_kind: HashMap<Arc<str>, SerializableItemDescriptor>,
  781    descriptors_by_type: HashMap<TypeId, SerializableItemDescriptor>,
  782}
  783
  784impl Global for SerializableItemRegistry {}
  785
  786impl SerializableItemRegistry {
  787    fn deserialize(
  788        item_kind: &str,
  789        project: Entity<Project>,
  790        workspace: WeakEntity<Workspace>,
  791        workspace_id: WorkspaceId,
  792        item_item: ItemId,
  793        window: &mut Window,
  794        cx: &mut Context<Pane>,
  795    ) -> Task<Result<Box<dyn ItemHandle>>> {
  796        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  797            return Task::ready(Err(anyhow!(
  798                "cannot deserialize {}, descriptor not found",
  799                item_kind
  800            )));
  801        };
  802
  803        (descriptor.deserialize)(project, workspace, workspace_id, item_item, window, cx)
  804    }
  805
  806    fn cleanup(
  807        item_kind: &str,
  808        workspace_id: WorkspaceId,
  809        loaded_items: Vec<ItemId>,
  810        window: &mut Window,
  811        cx: &mut App,
  812    ) -> Task<Result<()>> {
  813        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  814            return Task::ready(Err(anyhow!(
  815                "cannot cleanup {}, descriptor not found",
  816                item_kind
  817            )));
  818        };
  819
  820        (descriptor.cleanup)(workspace_id, loaded_items, window, cx)
  821    }
  822
  823    fn view_to_serializable_item_handle(
  824        view: AnyView,
  825        cx: &App,
  826    ) -> Option<Box<dyn SerializableItemHandle>> {
  827        let this = cx.try_global::<Self>()?;
  828        let descriptor = this.descriptors_by_type.get(&view.entity_type())?;
  829        Some((descriptor.view_to_serializable_item)(view))
  830    }
  831
  832    fn descriptor(item_kind: &str, cx: &App) -> Option<SerializableItemDescriptor> {
  833        let this = cx.try_global::<Self>()?;
  834        this.descriptors_by_kind.get(item_kind).copied()
  835    }
  836}
  837
  838pub fn register_serializable_item<I: SerializableItem>(cx: &mut App) {
  839    let serialized_item_kind = I::serialized_item_kind();
  840
  841    let registry = cx.default_global::<SerializableItemRegistry>();
  842    let descriptor = SerializableItemDescriptor {
  843        deserialize: |project, workspace, workspace_id, item_id, window, cx| {
  844            let task = I::deserialize(project, workspace, workspace_id, item_id, window, cx);
  845            cx.foreground_executor()
  846                .spawn(async { Ok(Box::new(task.await?) as Box<_>) })
  847        },
  848        cleanup: |workspace_id, loaded_items, window, cx| {
  849            I::cleanup(workspace_id, loaded_items, window, cx)
  850        },
  851        view_to_serializable_item: |view| Box::new(view.downcast::<I>().unwrap()),
  852    };
  853    registry
  854        .descriptors_by_kind
  855        .insert(Arc::from(serialized_item_kind), descriptor);
  856    registry
  857        .descriptors_by_type
  858        .insert(TypeId::of::<I>(), descriptor);
  859}
  860
  861pub struct AppState {
  862    pub languages: Arc<LanguageRegistry>,
  863    pub client: Arc<Client>,
  864    pub user_store: Entity<UserStore>,
  865    pub workspace_store: Entity<WorkspaceStore>,
  866    pub fs: Arc<dyn fs::Fs>,
  867    pub build_window_options: fn(Option<Uuid>, &mut App) -> WindowOptions,
  868    pub node_runtime: NodeRuntime,
  869    pub session: Entity<AppSession>,
  870}
  871
  872struct GlobalAppState(Weak<AppState>);
  873
  874impl Global for GlobalAppState {}
  875
  876pub struct WorkspaceStore {
  877    workspaces: HashSet<WindowHandle<Workspace>>,
  878    client: Arc<Client>,
  879    _subscriptions: Vec<client::Subscription>,
  880}
  881
  882#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq, PartialOrd, Ord)]
  883pub enum CollaboratorId {
  884    PeerId(PeerId),
  885    Agent,
  886}
  887
  888impl From<PeerId> for CollaboratorId {
  889    fn from(peer_id: PeerId) -> Self {
  890        CollaboratorId::PeerId(peer_id)
  891    }
  892}
  893
  894impl From<&PeerId> for CollaboratorId {
  895    fn from(peer_id: &PeerId) -> Self {
  896        CollaboratorId::PeerId(*peer_id)
  897    }
  898}
  899
  900#[derive(PartialEq, Eq, PartialOrd, Ord, Debug)]
  901struct Follower {
  902    project_id: Option<u64>,
  903    peer_id: PeerId,
  904}
  905
  906impl AppState {
  907    #[track_caller]
  908    pub fn global(cx: &App) -> Weak<Self> {
  909        cx.global::<GlobalAppState>().0.clone()
  910    }
  911    pub fn try_global(cx: &App) -> Option<Weak<Self>> {
  912        cx.try_global::<GlobalAppState>()
  913            .map(|state| state.0.clone())
  914    }
  915    pub fn set_global(state: Weak<AppState>, cx: &mut App) {
  916        cx.set_global(GlobalAppState(state));
  917    }
  918
  919    #[cfg(any(test, feature = "test-support"))]
  920    pub fn test(cx: &mut App) -> Arc<Self> {
  921        use node_runtime::NodeRuntime;
  922        use session::Session;
  923        use settings::SettingsStore;
  924
  925        if !cx.has_global::<SettingsStore>() {
  926            let settings_store = SettingsStore::test(cx);
  927            cx.set_global(settings_store);
  928        }
  929
  930        let fs = fs::FakeFs::new(cx.background_executor().clone());
  931        let languages = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));
  932        let clock = Arc::new(clock::FakeSystemClock::new());
  933        let http_client = http_client::FakeHttpClient::with_404_response();
  934        let client = Client::new(clock, http_client, cx);
  935        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
  936        let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
  937        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
  938
  939        theme::init(theme::LoadThemes::JustBase, cx);
  940        client::init(&client, cx);
  941        crate::init_settings(cx);
  942
  943        Arc::new(Self {
  944            client,
  945            fs,
  946            languages,
  947            user_store,
  948            workspace_store,
  949            node_runtime: NodeRuntime::unavailable(),
  950            build_window_options: |_, _| Default::default(),
  951            session,
  952        })
  953    }
  954}
  955
  956struct DelayedDebouncedEditAction {
  957    task: Option<Task<()>>,
  958    cancel_channel: Option<oneshot::Sender<()>>,
  959}
  960
  961impl DelayedDebouncedEditAction {
  962    fn new() -> DelayedDebouncedEditAction {
  963        DelayedDebouncedEditAction {
  964            task: None,
  965            cancel_channel: None,
  966        }
  967    }
  968
  969    fn fire_new<F>(
  970        &mut self,
  971        delay: Duration,
  972        window: &mut Window,
  973        cx: &mut Context<Workspace>,
  974        func: F,
  975    ) where
  976        F: 'static
  977            + Send
  978            + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> Task<Result<()>>,
  979    {
  980        if let Some(channel) = self.cancel_channel.take() {
  981            _ = channel.send(());
  982        }
  983
  984        let (sender, mut receiver) = oneshot::channel::<()>();
  985        self.cancel_channel = Some(sender);
  986
  987        let previous_task = self.task.take();
  988        self.task = Some(cx.spawn_in(window, async move |workspace, cx| {
  989            let mut timer = cx.background_executor().timer(delay).fuse();
  990            if let Some(previous_task) = previous_task {
  991                previous_task.await;
  992            }
  993
  994            futures::select_biased! {
  995                _ = receiver => return,
  996                    _ = timer => {}
  997            }
  998
  999            if let Some(result) = workspace
 1000                .update_in(cx, |workspace, window, cx| (func)(workspace, window, cx))
 1001                .log_err()
 1002            {
 1003                result.await.log_err();
 1004            }
 1005        }));
 1006    }
 1007}
 1008
 1009pub enum Event {
 1010    PaneAdded(Entity<Pane>),
 1011    PaneRemoved,
 1012    ItemAdded {
 1013        item: Box<dyn ItemHandle>,
 1014    },
 1015    ItemRemoved,
 1016    ActiveItemChanged,
 1017    UserSavedItem {
 1018        pane: WeakEntity<Pane>,
 1019        item: Box<dyn WeakItemHandle>,
 1020        save_intent: SaveIntent,
 1021    },
 1022    ContactRequestedJoin(u64),
 1023    WorkspaceCreated(WeakEntity<Workspace>),
 1024    OpenBundledFile {
 1025        text: Cow<'static, str>,
 1026        title: &'static str,
 1027        language: &'static str,
 1028    },
 1029    ZoomChanged,
 1030    ModalOpened,
 1031    ClearActivityIndicator,
 1032}
 1033
 1034#[derive(Debug)]
 1035pub enum OpenVisible {
 1036    All,
 1037    None,
 1038    OnlyFiles,
 1039    OnlyDirectories,
 1040}
 1041
 1042enum WorkspaceLocation {
 1043    // Valid local paths or SSH project to serialize
 1044    Location(SerializedWorkspaceLocation, PathList),
 1045    // No valid location found hence clear session id
 1046    DetachFromSession,
 1047    // No valid location found to serialize
 1048    None,
 1049}
 1050
 1051type PromptForNewPath = Box<
 1052    dyn Fn(
 1053        &mut Workspace,
 1054        DirectoryLister,
 1055        &mut Window,
 1056        &mut Context<Workspace>,
 1057    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1058>;
 1059
 1060type PromptForOpenPath = Box<
 1061    dyn Fn(
 1062        &mut Workspace,
 1063        DirectoryLister,
 1064        &mut Window,
 1065        &mut Context<Workspace>,
 1066    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1067>;
 1068
 1069#[derive(Default)]
 1070struct DispatchingKeystrokes {
 1071    dispatched: HashSet<Vec<Keystroke>>,
 1072    queue: VecDeque<Keystroke>,
 1073    task: Option<Shared<Task<()>>>,
 1074}
 1075
 1076/// Collects everything project-related for a certain window opened.
 1077/// In some way, is a counterpart of a window, as the [`WindowHandle`] could be downcast into `Workspace`.
 1078///
 1079/// A `Workspace` usually consists of 1 or more projects, a central pane group, 3 docks and a status bar.
 1080/// The `Workspace` owns everybody's state and serves as a default, "global context",
 1081/// that can be used to register a global action to be triggered from any place in the window.
 1082pub struct Workspace {
 1083    weak_self: WeakEntity<Self>,
 1084    workspace_actions: Vec<Box<dyn Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div>>,
 1085    zoomed: Option<AnyWeakView>,
 1086    previous_dock_drag_coordinates: Option<Point<Pixels>>,
 1087    zoomed_position: Option<DockPosition>,
 1088    center: PaneGroup,
 1089    left_dock: Entity<Dock>,
 1090    bottom_dock: Entity<Dock>,
 1091    right_dock: Entity<Dock>,
 1092    panes: Vec<Entity<Pane>>,
 1093    panes_by_item: HashMap<EntityId, WeakEntity<Pane>>,
 1094    active_pane: Entity<Pane>,
 1095    last_active_center_pane: Option<WeakEntity<Pane>>,
 1096    last_active_view_id: Option<proto::ViewId>,
 1097    status_bar: Entity<StatusBar>,
 1098    modal_layer: Entity<ModalLayer>,
 1099    toast_layer: Entity<ToastLayer>,
 1100    titlebar_item: Option<AnyView>,
 1101    notifications: Notifications,
 1102    suppressed_notifications: HashSet<NotificationId>,
 1103    project: Entity<Project>,
 1104    follower_states: HashMap<CollaboratorId, FollowerState>,
 1105    last_leaders_by_pane: HashMap<WeakEntity<Pane>, CollaboratorId>,
 1106    window_edited: bool,
 1107    last_window_title: Option<String>,
 1108    dirty_items: HashMap<EntityId, Subscription>,
 1109    active_call: Option<(Entity<ActiveCall>, Vec<Subscription>)>,
 1110    leader_updates_tx: mpsc::UnboundedSender<(PeerId, proto::UpdateFollowers)>,
 1111    database_id: Option<WorkspaceId>,
 1112    app_state: Arc<AppState>,
 1113    dispatching_keystrokes: Rc<RefCell<DispatchingKeystrokes>>,
 1114    _subscriptions: Vec<Subscription>,
 1115    _apply_leader_updates: Task<Result<()>>,
 1116    _observe_current_user: Task<Result<()>>,
 1117    _schedule_serialize_workspace: Option<Task<()>>,
 1118    _schedule_serialize_ssh_paths: Option<Task<()>>,
 1119    pane_history_timestamp: Arc<AtomicUsize>,
 1120    bounds: Bounds<Pixels>,
 1121    pub centered_layout: bool,
 1122    bounds_save_task_queued: Option<Task<()>>,
 1123    on_prompt_for_new_path: Option<PromptForNewPath>,
 1124    on_prompt_for_open_path: Option<PromptForOpenPath>,
 1125    terminal_provider: Option<Box<dyn TerminalProvider>>,
 1126    debugger_provider: Option<Arc<dyn DebuggerProvider>>,
 1127    serializable_items_tx: UnboundedSender<Box<dyn SerializableItemHandle>>,
 1128    _items_serializer: Task<Result<()>>,
 1129    session_id: Option<String>,
 1130    scheduled_tasks: Vec<Task<()>>,
 1131}
 1132
 1133impl EventEmitter<Event> for Workspace {}
 1134
 1135#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
 1136pub struct ViewId {
 1137    pub creator: CollaboratorId,
 1138    pub id: u64,
 1139}
 1140
 1141pub struct FollowerState {
 1142    center_pane: Entity<Pane>,
 1143    dock_pane: Option<Entity<Pane>>,
 1144    active_view_id: Option<ViewId>,
 1145    items_by_leader_view_id: HashMap<ViewId, FollowerView>,
 1146}
 1147
 1148struct FollowerView {
 1149    view: Box<dyn FollowableItemHandle>,
 1150    location: Option<proto::PanelId>,
 1151}
 1152
 1153impl Workspace {
 1154    const DEFAULT_PADDING: f32 = 0.2;
 1155    const MAX_PADDING: f32 = 0.4;
 1156
 1157    pub fn new(
 1158        workspace_id: Option<WorkspaceId>,
 1159        project: Entity<Project>,
 1160        app_state: Arc<AppState>,
 1161        window: &mut Window,
 1162        cx: &mut Context<Self>,
 1163    ) -> Self {
 1164        cx.subscribe_in(&project, window, move |this, _, event, window, cx| {
 1165            match event {
 1166                project::Event::RemoteIdChanged(_) => {
 1167                    this.update_window_title(window, cx);
 1168                }
 1169
 1170                project::Event::CollaboratorLeft(peer_id) => {
 1171                    this.collaborator_left(*peer_id, window, cx);
 1172                }
 1173
 1174                project::Event::WorktreeRemoved(_) | project::Event::WorktreeAdded(_) => {
 1175                    this.update_window_title(window, cx);
 1176                    this.serialize_workspace(window, cx);
 1177                    // This event could be triggered by `AddFolderToProject` or `RemoveFromProject`.
 1178                    this.update_history(cx);
 1179                }
 1180
 1181                project::Event::DisconnectedFromHost => {
 1182                    this.update_window_edited(window, cx);
 1183                    let leaders_to_unfollow =
 1184                        this.follower_states.keys().copied().collect::<Vec<_>>();
 1185                    for leader_id in leaders_to_unfollow {
 1186                        this.unfollow(leader_id, window, cx);
 1187                    }
 1188                }
 1189
 1190                project::Event::DisconnectedFromSshRemote => {
 1191                    this.update_window_edited(window, cx);
 1192                }
 1193
 1194                project::Event::Closed => {
 1195                    window.remove_window();
 1196                }
 1197
 1198                project::Event::DeletedEntry(_, entry_id) => {
 1199                    for pane in this.panes.iter() {
 1200                        pane.update(cx, |pane, cx| {
 1201                            pane.handle_deleted_project_item(*entry_id, window, cx)
 1202                        });
 1203                    }
 1204                }
 1205
 1206                project::Event::Toast {
 1207                    notification_id,
 1208                    message,
 1209                } => this.show_notification(
 1210                    NotificationId::named(notification_id.clone()),
 1211                    cx,
 1212                    |cx| cx.new(|cx| MessageNotification::new(message.clone(), cx)),
 1213                ),
 1214
 1215                project::Event::HideToast { notification_id } => {
 1216                    this.dismiss_notification(&NotificationId::named(notification_id.clone()), cx)
 1217                }
 1218
 1219                project::Event::LanguageServerPrompt(request) => {
 1220                    struct LanguageServerPrompt;
 1221
 1222                    let mut hasher = DefaultHasher::new();
 1223                    request.lsp_name.as_str().hash(&mut hasher);
 1224                    let id = hasher.finish();
 1225
 1226                    this.show_notification(
 1227                        NotificationId::composite::<LanguageServerPrompt>(id as usize),
 1228                        cx,
 1229                        |cx| {
 1230                            cx.new(|cx| {
 1231                                notifications::LanguageServerPrompt::new(request.clone(), cx)
 1232                            })
 1233                        },
 1234                    );
 1235                }
 1236
 1237                project::Event::AgentLocationChanged => {
 1238                    this.handle_agent_location_changed(window, cx)
 1239                }
 1240
 1241                _ => {}
 1242            }
 1243            cx.notify()
 1244        })
 1245        .detach();
 1246
 1247        cx.subscribe_in(
 1248            &project.read(cx).breakpoint_store(),
 1249            window,
 1250            |workspace, _, event, window, cx| match event {
 1251                BreakpointStoreEvent::BreakpointsUpdated(_, _)
 1252                | BreakpointStoreEvent::BreakpointsCleared(_) => {
 1253                    workspace.serialize_workspace(window, cx);
 1254                }
 1255                BreakpointStoreEvent::SetDebugLine | BreakpointStoreEvent::ClearDebugLines => {}
 1256            },
 1257        )
 1258        .detach();
 1259
 1260        cx.on_focus_lost(window, |this, window, cx| {
 1261            let focus_handle = this.focus_handle(cx);
 1262            window.focus(&focus_handle);
 1263        })
 1264        .detach();
 1265
 1266        let weak_handle = cx.entity().downgrade();
 1267        let pane_history_timestamp = Arc::new(AtomicUsize::new(0));
 1268
 1269        let center_pane = cx.new(|cx| {
 1270            let mut center_pane = Pane::new(
 1271                weak_handle.clone(),
 1272                project.clone(),
 1273                pane_history_timestamp.clone(),
 1274                None,
 1275                NewFile.boxed_clone(),
 1276                window,
 1277                cx,
 1278            );
 1279            center_pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 1280            center_pane
 1281        });
 1282        cx.subscribe_in(&center_pane, window, Self::handle_pane_event)
 1283            .detach();
 1284
 1285        window.focus(&center_pane.focus_handle(cx));
 1286
 1287        cx.emit(Event::PaneAdded(center_pane.clone()));
 1288
 1289        let window_handle = window.window_handle().downcast::<Workspace>().unwrap();
 1290        app_state.workspace_store.update(cx, |store, _| {
 1291            store.workspaces.insert(window_handle);
 1292        });
 1293
 1294        let mut current_user = app_state.user_store.read(cx).watch_current_user();
 1295        let mut connection_status = app_state.client.status();
 1296        let _observe_current_user = cx.spawn_in(window, async move |this, cx| {
 1297            current_user.next().await;
 1298            connection_status.next().await;
 1299            let mut stream =
 1300                Stream::map(current_user, drop).merge(Stream::map(connection_status, drop));
 1301
 1302            while stream.recv().await.is_some() {
 1303                this.update(cx, |_, cx| cx.notify())?;
 1304            }
 1305            anyhow::Ok(())
 1306        });
 1307
 1308        // All leader updates are enqueued and then processed in a single task, so
 1309        // that each asynchronous operation can be run in order.
 1310        let (leader_updates_tx, mut leader_updates_rx) =
 1311            mpsc::unbounded::<(PeerId, proto::UpdateFollowers)>();
 1312        let _apply_leader_updates = cx.spawn_in(window, async move |this, cx| {
 1313            while let Some((leader_id, update)) = leader_updates_rx.next().await {
 1314                Self::process_leader_update(&this, leader_id, update, cx)
 1315                    .await
 1316                    .log_err();
 1317            }
 1318
 1319            Ok(())
 1320        });
 1321
 1322        cx.emit(Event::WorkspaceCreated(weak_handle.clone()));
 1323        let modal_layer = cx.new(|_| ModalLayer::new());
 1324        let toast_layer = cx.new(|_| ToastLayer::new());
 1325        cx.subscribe(
 1326            &modal_layer,
 1327            |_, _, _: &modal_layer::ModalOpenedEvent, cx| {
 1328                cx.emit(Event::ModalOpened);
 1329            },
 1330        )
 1331        .detach();
 1332
 1333        let left_dock = Dock::new(DockPosition::Left, modal_layer.clone(), window, cx);
 1334        let bottom_dock = Dock::new(DockPosition::Bottom, modal_layer.clone(), window, cx);
 1335        let right_dock = Dock::new(DockPosition::Right, modal_layer.clone(), window, cx);
 1336        let left_dock_buttons = cx.new(|cx| PanelButtons::new(left_dock.clone(), cx));
 1337        let bottom_dock_buttons = cx.new(|cx| PanelButtons::new(bottom_dock.clone(), cx));
 1338        let right_dock_buttons = cx.new(|cx| PanelButtons::new(right_dock.clone(), cx));
 1339        let status_bar = cx.new(|cx| {
 1340            let mut status_bar = StatusBar::new(&center_pane.clone(), window, cx);
 1341            status_bar.add_left_item(left_dock_buttons, window, cx);
 1342            status_bar.add_right_item(right_dock_buttons, window, cx);
 1343            status_bar.add_right_item(bottom_dock_buttons, window, cx);
 1344            status_bar
 1345        });
 1346
 1347        let session_id = app_state.session.read(cx).id().to_owned();
 1348
 1349        let mut active_call = None;
 1350        if let Some(call) = ActiveCall::try_global(cx) {
 1351            let subscriptions = vec![cx.subscribe_in(&call, window, Self::on_active_call_event)];
 1352            active_call = Some((call, subscriptions));
 1353        }
 1354
 1355        let (serializable_items_tx, serializable_items_rx) =
 1356            mpsc::unbounded::<Box<dyn SerializableItemHandle>>();
 1357        let _items_serializer = cx.spawn_in(window, async move |this, cx| {
 1358            Self::serialize_items(&this, serializable_items_rx, cx).await
 1359        });
 1360
 1361        let subscriptions = vec![
 1362            cx.observe_window_activation(window, Self::on_window_activation_changed),
 1363            cx.observe_window_bounds(window, move |this, window, cx| {
 1364                if this.bounds_save_task_queued.is_some() {
 1365                    return;
 1366                }
 1367                this.bounds_save_task_queued = Some(cx.spawn_in(window, async move |this, cx| {
 1368                    cx.background_executor()
 1369                        .timer(Duration::from_millis(100))
 1370                        .await;
 1371                    this.update_in(cx, |this, window, cx| {
 1372                        if let Some(display) = window.display(cx)
 1373                            && let Ok(display_uuid) = display.uuid()
 1374                        {
 1375                            let window_bounds = window.inner_window_bounds();
 1376                            if let Some(database_id) = workspace_id {
 1377                                cx.background_executor()
 1378                                    .spawn(DB.set_window_open_status(
 1379                                        database_id,
 1380                                        SerializedWindowBounds(window_bounds),
 1381                                        display_uuid,
 1382                                    ))
 1383                                    .detach_and_log_err(cx);
 1384                            }
 1385                        }
 1386                        this.bounds_save_task_queued.take();
 1387                    })
 1388                    .ok();
 1389                }));
 1390                cx.notify();
 1391            }),
 1392            cx.observe_window_appearance(window, |_, window, cx| {
 1393                let window_appearance = window.appearance();
 1394
 1395                *SystemAppearance::global_mut(cx) = SystemAppearance(window_appearance.into());
 1396
 1397                ThemeSettings::reload_current_theme(cx);
 1398                ThemeSettings::reload_current_icon_theme(cx);
 1399            }),
 1400            cx.on_release(move |this, cx| {
 1401                this.app_state.workspace_store.update(cx, move |store, _| {
 1402                    store.workspaces.remove(&window_handle.clone());
 1403                })
 1404            }),
 1405        ];
 1406
 1407        cx.defer_in(window, |this, window, cx| {
 1408            this.update_window_title(window, cx);
 1409            this.show_initial_notifications(cx);
 1410        });
 1411        Workspace {
 1412            weak_self: weak_handle.clone(),
 1413            zoomed: None,
 1414            zoomed_position: None,
 1415            previous_dock_drag_coordinates: None,
 1416            center: PaneGroup::new(center_pane.clone()),
 1417            panes: vec![center_pane.clone()],
 1418            panes_by_item: Default::default(),
 1419            active_pane: center_pane.clone(),
 1420            last_active_center_pane: Some(center_pane.downgrade()),
 1421            last_active_view_id: None,
 1422            status_bar,
 1423            modal_layer,
 1424            toast_layer,
 1425            titlebar_item: None,
 1426            notifications: Notifications::default(),
 1427            suppressed_notifications: HashSet::default(),
 1428            left_dock,
 1429            bottom_dock,
 1430            right_dock,
 1431            project: project.clone(),
 1432            follower_states: Default::default(),
 1433            last_leaders_by_pane: Default::default(),
 1434            dispatching_keystrokes: Default::default(),
 1435            window_edited: false,
 1436            last_window_title: None,
 1437            dirty_items: Default::default(),
 1438            active_call,
 1439            database_id: workspace_id,
 1440            app_state,
 1441            _observe_current_user,
 1442            _apply_leader_updates,
 1443            _schedule_serialize_workspace: None,
 1444            _schedule_serialize_ssh_paths: None,
 1445            leader_updates_tx,
 1446            _subscriptions: subscriptions,
 1447            pane_history_timestamp,
 1448            workspace_actions: Default::default(),
 1449            // This data will be incorrect, but it will be overwritten by the time it needs to be used.
 1450            bounds: Default::default(),
 1451            centered_layout: false,
 1452            bounds_save_task_queued: None,
 1453            on_prompt_for_new_path: None,
 1454            on_prompt_for_open_path: None,
 1455            terminal_provider: None,
 1456            debugger_provider: None,
 1457            serializable_items_tx,
 1458            _items_serializer,
 1459            session_id: Some(session_id),
 1460
 1461            scheduled_tasks: Vec::new(),
 1462        }
 1463    }
 1464
 1465    pub fn new_local(
 1466        abs_paths: Vec<PathBuf>,
 1467        app_state: Arc<AppState>,
 1468        requesting_window: Option<WindowHandle<Workspace>>,
 1469        env: Option<HashMap<String, String>>,
 1470        cx: &mut App,
 1471    ) -> Task<
 1472        anyhow::Result<(
 1473            WindowHandle<Workspace>,
 1474            Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 1475        )>,
 1476    > {
 1477        let project_handle = Project::local(
 1478            app_state.client.clone(),
 1479            app_state.node_runtime.clone(),
 1480            app_state.user_store.clone(),
 1481            app_state.languages.clone(),
 1482            app_state.fs.clone(),
 1483            env,
 1484            cx,
 1485        );
 1486
 1487        cx.spawn(async move |cx| {
 1488            let mut paths_to_open = Vec::with_capacity(abs_paths.len());
 1489            for path in abs_paths.into_iter() {
 1490                if let Some(canonical) = app_state.fs.canonicalize(&path).await.ok() {
 1491                    paths_to_open.push(canonical)
 1492                } else {
 1493                    paths_to_open.push(path)
 1494                }
 1495            }
 1496
 1497            let serialized_workspace =
 1498                persistence::DB.workspace_for_roots(paths_to_open.as_slice());
 1499
 1500            if let Some(paths) = serialized_workspace.as_ref().map(|ws| &ws.paths) {
 1501                paths_to_open = paths.paths().to_vec();
 1502                if !paths.is_lexicographically_ordered() {
 1503                    project_handle
 1504                        .update(cx, |project, cx| {
 1505                            project.set_worktrees_reordered(true, cx);
 1506                        })
 1507                        .log_err();
 1508                }
 1509            }
 1510
 1511            // Get project paths for all of the abs_paths
 1512            let mut project_paths: Vec<(PathBuf, Option<ProjectPath>)> =
 1513                Vec::with_capacity(paths_to_open.len());
 1514
 1515            for path in paths_to_open.into_iter() {
 1516                if let Some((_, project_entry)) = cx
 1517                    .update(|cx| {
 1518                        Workspace::project_path_for_path(project_handle.clone(), &path, true, cx)
 1519                    })?
 1520                    .await
 1521                    .log_err()
 1522                {
 1523                    project_paths.push((path, Some(project_entry)));
 1524                } else {
 1525                    project_paths.push((path, None));
 1526                }
 1527            }
 1528
 1529            let workspace_id = if let Some(serialized_workspace) = serialized_workspace.as_ref() {
 1530                serialized_workspace.id
 1531            } else {
 1532                DB.next_id().await.unwrap_or_else(|_| Default::default())
 1533            };
 1534
 1535            let toolchains = DB.toolchains(workspace_id).await?;
 1536
 1537            for (toolchain, worktree_id, path) in toolchains {
 1538                let toolchain_path = PathBuf::from(toolchain.path.clone().to_string());
 1539                if !app_state.fs.is_file(toolchain_path.as_path()).await {
 1540                    continue;
 1541                }
 1542
 1543                project_handle
 1544                    .update(cx, |this, cx| {
 1545                        this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 1546                    })?
 1547                    .await;
 1548            }
 1549            let window = if let Some(window) = requesting_window {
 1550                let centered_layout = serialized_workspace
 1551                    .as_ref()
 1552                    .map(|w| w.centered_layout)
 1553                    .unwrap_or(false);
 1554
 1555                cx.update_window(window.into(), |_, window, cx| {
 1556                    window.replace_root(cx, |window, cx| {
 1557                        let mut workspace = Workspace::new(
 1558                            Some(workspace_id),
 1559                            project_handle.clone(),
 1560                            app_state.clone(),
 1561                            window,
 1562                            cx,
 1563                        );
 1564
 1565                        workspace.centered_layout = centered_layout;
 1566                        workspace
 1567                    });
 1568                })?;
 1569                window
 1570            } else {
 1571                let window_bounds_override = window_bounds_env_override();
 1572
 1573                let (window_bounds, display) = if let Some(bounds) = window_bounds_override {
 1574                    (Some(WindowBounds::Windowed(bounds)), None)
 1575                } else {
 1576                    let restorable_bounds = serialized_workspace
 1577                        .as_ref()
 1578                        .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 1579                        .or_else(|| {
 1580                            let (display, window_bounds) = DB.last_window().log_err()?;
 1581                            Some((display?, window_bounds?))
 1582                        });
 1583
 1584                    if let Some((serialized_display, serialized_status)) = restorable_bounds {
 1585                        (Some(serialized_status.0), Some(serialized_display))
 1586                    } else {
 1587                        (None, None)
 1588                    }
 1589                };
 1590
 1591                // Use the serialized workspace to construct the new window
 1592                let mut options = cx.update(|cx| (app_state.build_window_options)(display, cx))?;
 1593                options.window_bounds = window_bounds;
 1594                let centered_layout = serialized_workspace
 1595                    .as_ref()
 1596                    .map(|w| w.centered_layout)
 1597                    .unwrap_or(false);
 1598                cx.open_window(options, {
 1599                    let app_state = app_state.clone();
 1600                    let project_handle = project_handle.clone();
 1601                    move |window, cx| {
 1602                        cx.new(|cx| {
 1603                            let mut workspace = Workspace::new(
 1604                                Some(workspace_id),
 1605                                project_handle,
 1606                                app_state,
 1607                                window,
 1608                                cx,
 1609                            );
 1610                            workspace.centered_layout = centered_layout;
 1611                            workspace
 1612                        })
 1613                    }
 1614                })?
 1615            };
 1616
 1617            notify_if_database_failed(window, cx);
 1618            let opened_items = window
 1619                .update(cx, |_workspace, window, cx| {
 1620                    open_items(serialized_workspace, project_paths, window, cx)
 1621                })?
 1622                .await
 1623                .unwrap_or_default();
 1624
 1625            window
 1626                .update(cx, |workspace, window, cx| {
 1627                    window.activate_window();
 1628                    workspace.update_history(cx);
 1629                })
 1630                .log_err();
 1631            Ok((window, opened_items))
 1632        })
 1633    }
 1634
 1635    pub fn weak_handle(&self) -> WeakEntity<Self> {
 1636        self.weak_self.clone()
 1637    }
 1638
 1639    pub fn left_dock(&self) -> &Entity<Dock> {
 1640        &self.left_dock
 1641    }
 1642
 1643    pub fn bottom_dock(&self) -> &Entity<Dock> {
 1644        &self.bottom_dock
 1645    }
 1646
 1647    pub fn set_bottom_dock_layout(
 1648        &mut self,
 1649        layout: BottomDockLayout,
 1650        window: &mut Window,
 1651        cx: &mut Context<Self>,
 1652    ) {
 1653        let fs = self.project().read(cx).fs();
 1654        settings::update_settings_file::<WorkspaceSettings>(fs.clone(), cx, move |content, _cx| {
 1655            content.bottom_dock_layout = Some(layout);
 1656        });
 1657
 1658        cx.notify();
 1659        self.serialize_workspace(window, cx);
 1660    }
 1661
 1662    pub fn right_dock(&self) -> &Entity<Dock> {
 1663        &self.right_dock
 1664    }
 1665
 1666    pub fn all_docks(&self) -> [&Entity<Dock>; 3] {
 1667        [&self.left_dock, &self.bottom_dock, &self.right_dock]
 1668    }
 1669
 1670    pub fn dock_at_position(&self, position: DockPosition) -> &Entity<Dock> {
 1671        match position {
 1672            DockPosition::Left => &self.left_dock,
 1673            DockPosition::Bottom => &self.bottom_dock,
 1674            DockPosition::Right => &self.right_dock,
 1675        }
 1676    }
 1677
 1678    pub fn is_edited(&self) -> bool {
 1679        self.window_edited
 1680    }
 1681
 1682    pub fn add_panel<T: Panel>(
 1683        &mut self,
 1684        panel: Entity<T>,
 1685        window: &mut Window,
 1686        cx: &mut Context<Self>,
 1687    ) {
 1688        let focus_handle = panel.panel_focus_handle(cx);
 1689        cx.on_focus_in(&focus_handle, window, Self::handle_panel_focused)
 1690            .detach();
 1691
 1692        let dock_position = panel.position(window, cx);
 1693        let dock = self.dock_at_position(dock_position);
 1694
 1695        dock.update(cx, |dock, cx| {
 1696            dock.add_panel(panel, self.weak_self.clone(), window, cx)
 1697        });
 1698    }
 1699
 1700    pub fn status_bar(&self) -> &Entity<StatusBar> {
 1701        &self.status_bar
 1702    }
 1703
 1704    pub fn app_state(&self) -> &Arc<AppState> {
 1705        &self.app_state
 1706    }
 1707
 1708    pub fn user_store(&self) -> &Entity<UserStore> {
 1709        &self.app_state.user_store
 1710    }
 1711
 1712    pub fn project(&self) -> &Entity<Project> {
 1713        &self.project
 1714    }
 1715
 1716    pub fn recently_activated_items(&self, cx: &App) -> HashMap<EntityId, usize> {
 1717        let mut history: HashMap<EntityId, usize> = HashMap::default();
 1718
 1719        for pane_handle in &self.panes {
 1720            let pane = pane_handle.read(cx);
 1721
 1722            for entry in pane.activation_history() {
 1723                history.insert(
 1724                    entry.entity_id,
 1725                    history
 1726                        .get(&entry.entity_id)
 1727                        .cloned()
 1728                        .unwrap_or(0)
 1729                        .max(entry.timestamp),
 1730                );
 1731            }
 1732        }
 1733
 1734        history
 1735    }
 1736
 1737    pub fn recent_active_item_by_type<T: 'static>(&self, cx: &App) -> Option<Entity<T>> {
 1738        let mut recent_item: Option<Entity<T>> = None;
 1739        let mut recent_timestamp = 0;
 1740        for pane_handle in &self.panes {
 1741            let pane = pane_handle.read(cx);
 1742            let item_map: HashMap<EntityId, &Box<dyn ItemHandle>> =
 1743                pane.items().map(|item| (item.item_id(), item)).collect();
 1744            for entry in pane.activation_history() {
 1745                if entry.timestamp > recent_timestamp
 1746                    && let Some(&item) = item_map.get(&entry.entity_id)
 1747                    && let Some(typed_item) = item.act_as::<T>(cx)
 1748                {
 1749                    recent_timestamp = entry.timestamp;
 1750                    recent_item = Some(typed_item);
 1751                }
 1752            }
 1753        }
 1754        recent_item
 1755    }
 1756
 1757    pub fn recent_navigation_history_iter(
 1758        &self,
 1759        cx: &App,
 1760    ) -> impl Iterator<Item = (ProjectPath, Option<PathBuf>)> {
 1761        let mut abs_paths_opened: HashMap<PathBuf, HashSet<ProjectPath>> = HashMap::default();
 1762        let mut history: HashMap<ProjectPath, (Option<PathBuf>, usize)> = HashMap::default();
 1763
 1764        for pane in &self.panes {
 1765            let pane = pane.read(cx);
 1766
 1767            pane.nav_history()
 1768                .for_each_entry(cx, |entry, (project_path, fs_path)| {
 1769                    if let Some(fs_path) = &fs_path {
 1770                        abs_paths_opened
 1771                            .entry(fs_path.clone())
 1772                            .or_default()
 1773                            .insert(project_path.clone());
 1774                    }
 1775                    let timestamp = entry.timestamp;
 1776                    match history.entry(project_path) {
 1777                        hash_map::Entry::Occupied(mut entry) => {
 1778                            let (_, old_timestamp) = entry.get();
 1779                            if &timestamp > old_timestamp {
 1780                                entry.insert((fs_path, timestamp));
 1781                            }
 1782                        }
 1783                        hash_map::Entry::Vacant(entry) => {
 1784                            entry.insert((fs_path, timestamp));
 1785                        }
 1786                    }
 1787                });
 1788
 1789            if let Some(item) = pane.active_item()
 1790                && let Some(project_path) = item.project_path(cx)
 1791            {
 1792                let fs_path = self.project.read(cx).absolute_path(&project_path, cx);
 1793
 1794                if let Some(fs_path) = &fs_path {
 1795                    abs_paths_opened
 1796                        .entry(fs_path.clone())
 1797                        .or_default()
 1798                        .insert(project_path.clone());
 1799                }
 1800
 1801                history.insert(project_path, (fs_path, std::usize::MAX));
 1802            }
 1803        }
 1804
 1805        history
 1806            .into_iter()
 1807            .sorted_by_key(|(_, (_, order))| *order)
 1808            .map(|(project_path, (fs_path, _))| (project_path, fs_path))
 1809            .rev()
 1810            .filter(move |(history_path, abs_path)| {
 1811                let latest_project_path_opened = abs_path
 1812                    .as_ref()
 1813                    .and_then(|abs_path| abs_paths_opened.get(abs_path))
 1814                    .and_then(|project_paths| {
 1815                        project_paths
 1816                            .iter()
 1817                            .max_by(|b1, b2| b1.worktree_id.cmp(&b2.worktree_id))
 1818                    });
 1819
 1820                latest_project_path_opened.is_none_or(|path| path == history_path)
 1821            })
 1822    }
 1823
 1824    pub fn recent_navigation_history(
 1825        &self,
 1826        limit: Option<usize>,
 1827        cx: &App,
 1828    ) -> Vec<(ProjectPath, Option<PathBuf>)> {
 1829        self.recent_navigation_history_iter(cx)
 1830            .take(limit.unwrap_or(usize::MAX))
 1831            .collect()
 1832    }
 1833
 1834    fn navigate_history(
 1835        &mut self,
 1836        pane: WeakEntity<Pane>,
 1837        mode: NavigationMode,
 1838        window: &mut Window,
 1839        cx: &mut Context<Workspace>,
 1840    ) -> Task<Result<()>> {
 1841        let to_load = if let Some(pane) = pane.upgrade() {
 1842            pane.update(cx, |pane, cx| {
 1843                window.focus(&pane.focus_handle(cx));
 1844                loop {
 1845                    // Retrieve the weak item handle from the history.
 1846                    let entry = pane.nav_history_mut().pop(mode, cx)?;
 1847
 1848                    // If the item is still present in this pane, then activate it.
 1849                    if let Some(index) = entry
 1850                        .item
 1851                        .upgrade()
 1852                        .and_then(|v| pane.index_for_item(v.as_ref()))
 1853                    {
 1854                        let prev_active_item_index = pane.active_item_index();
 1855                        pane.nav_history_mut().set_mode(mode);
 1856                        pane.activate_item(index, true, true, window, cx);
 1857                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1858
 1859                        let mut navigated = prev_active_item_index != pane.active_item_index();
 1860                        if let Some(data) = entry.data {
 1861                            navigated |= pane.active_item()?.navigate(data, window, cx);
 1862                        }
 1863
 1864                        if navigated {
 1865                            break None;
 1866                        }
 1867                    } else {
 1868                        // If the item is no longer present in this pane, then retrieve its
 1869                        // path info in order to reopen it.
 1870                        break pane
 1871                            .nav_history()
 1872                            .path_for_item(entry.item.id())
 1873                            .map(|(project_path, abs_path)| (project_path, abs_path, entry));
 1874                    }
 1875                }
 1876            })
 1877        } else {
 1878            None
 1879        };
 1880
 1881        if let Some((project_path, abs_path, entry)) = to_load {
 1882            // If the item was no longer present, then load it again from its previous path, first try the local path
 1883            let open_by_project_path = self.load_path(project_path.clone(), window, cx);
 1884
 1885            cx.spawn_in(window, async move  |workspace, cx| {
 1886                let open_by_project_path = open_by_project_path.await;
 1887                let mut navigated = false;
 1888                match open_by_project_path
 1889                    .with_context(|| format!("Navigating to {project_path:?}"))
 1890                {
 1891                    Ok((project_entry_id, build_item)) => {
 1892                        let prev_active_item_id = pane.update(cx, |pane, _| {
 1893                            pane.nav_history_mut().set_mode(mode);
 1894                            pane.active_item().map(|p| p.item_id())
 1895                        })?;
 1896
 1897                        pane.update_in(cx, |pane, window, cx| {
 1898                            let item = pane.open_item(
 1899                                project_entry_id,
 1900                                project_path,
 1901                                true,
 1902                                entry.is_preview,
 1903                                true,
 1904                                None,
 1905                                window, cx,
 1906                                build_item,
 1907                            );
 1908                            navigated |= Some(item.item_id()) != prev_active_item_id;
 1909                            pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1910                            if let Some(data) = entry.data {
 1911                                navigated |= item.navigate(data, window, cx);
 1912                            }
 1913                        })?;
 1914                    }
 1915                    Err(open_by_project_path_e) => {
 1916                        // Fall back to opening by abs path, in case an external file was opened and closed,
 1917                        // and its worktree is now dropped
 1918                        if let Some(abs_path) = abs_path {
 1919                            let prev_active_item_id = pane.update(cx, |pane, _| {
 1920                                pane.nav_history_mut().set_mode(mode);
 1921                                pane.active_item().map(|p| p.item_id())
 1922                            })?;
 1923                            let open_by_abs_path = workspace.update_in(cx, |workspace, window, cx| {
 1924                                workspace.open_abs_path(abs_path.clone(), OpenOptions { visible: Some(OpenVisible::None), ..Default::default() }, window, cx)
 1925                            })?;
 1926                            match open_by_abs_path
 1927                                .await
 1928                                .with_context(|| format!("Navigating to {abs_path:?}"))
 1929                            {
 1930                                Ok(item) => {
 1931                                    pane.update_in(cx, |pane, window, cx| {
 1932                                        navigated |= Some(item.item_id()) != prev_active_item_id;
 1933                                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1934                                        if let Some(data) = entry.data {
 1935                                            navigated |= item.navigate(data, window, cx);
 1936                                        }
 1937                                    })?;
 1938                                }
 1939                                Err(open_by_abs_path_e) => {
 1940                                    log::error!("Failed to navigate history: {open_by_project_path_e:#} and {open_by_abs_path_e:#}");
 1941                                }
 1942                            }
 1943                        }
 1944                    }
 1945                }
 1946
 1947                if !navigated {
 1948                    workspace
 1949                        .update_in(cx, |workspace, window, cx| {
 1950                            Self::navigate_history(workspace, pane, mode, window, cx)
 1951                        })?
 1952                        .await?;
 1953                }
 1954
 1955                Ok(())
 1956            })
 1957        } else {
 1958            Task::ready(Ok(()))
 1959        }
 1960    }
 1961
 1962    pub fn go_back(
 1963        &mut self,
 1964        pane: WeakEntity<Pane>,
 1965        window: &mut Window,
 1966        cx: &mut Context<Workspace>,
 1967    ) -> Task<Result<()>> {
 1968        self.navigate_history(pane, NavigationMode::GoingBack, window, cx)
 1969    }
 1970
 1971    pub fn go_forward(
 1972        &mut self,
 1973        pane: WeakEntity<Pane>,
 1974        window: &mut Window,
 1975        cx: &mut Context<Workspace>,
 1976    ) -> Task<Result<()>> {
 1977        self.navigate_history(pane, NavigationMode::GoingForward, window, cx)
 1978    }
 1979
 1980    pub fn reopen_closed_item(
 1981        &mut self,
 1982        window: &mut Window,
 1983        cx: &mut Context<Workspace>,
 1984    ) -> Task<Result<()>> {
 1985        self.navigate_history(
 1986            self.active_pane().downgrade(),
 1987            NavigationMode::ReopeningClosedItem,
 1988            window,
 1989            cx,
 1990        )
 1991    }
 1992
 1993    pub fn client(&self) -> &Arc<Client> {
 1994        &self.app_state.client
 1995    }
 1996
 1997    pub fn set_titlebar_item(&mut self, item: AnyView, _: &mut Window, cx: &mut Context<Self>) {
 1998        self.titlebar_item = Some(item);
 1999        cx.notify();
 2000    }
 2001
 2002    pub fn set_prompt_for_new_path(&mut self, prompt: PromptForNewPath) {
 2003        self.on_prompt_for_new_path = Some(prompt)
 2004    }
 2005
 2006    pub fn set_prompt_for_open_path(&mut self, prompt: PromptForOpenPath) {
 2007        self.on_prompt_for_open_path = Some(prompt)
 2008    }
 2009
 2010    pub fn set_terminal_provider(&mut self, provider: impl TerminalProvider + 'static) {
 2011        self.terminal_provider = Some(Box::new(provider));
 2012    }
 2013
 2014    pub fn set_debugger_provider(&mut self, provider: impl DebuggerProvider + 'static) {
 2015        self.debugger_provider = Some(Arc::new(provider));
 2016    }
 2017
 2018    pub fn debugger_provider(&self) -> Option<Arc<dyn DebuggerProvider>> {
 2019        self.debugger_provider.clone()
 2020    }
 2021
 2022    pub fn prompt_for_open_path(
 2023        &mut self,
 2024        path_prompt_options: PathPromptOptions,
 2025        lister: DirectoryLister,
 2026        window: &mut Window,
 2027        cx: &mut Context<Self>,
 2028    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2029        if !lister.is_local(cx) || !WorkspaceSettings::get_global(cx).use_system_path_prompts {
 2030            let prompt = self.on_prompt_for_open_path.take().unwrap();
 2031            let rx = prompt(self, lister, window, cx);
 2032            self.on_prompt_for_open_path = Some(prompt);
 2033            rx
 2034        } else {
 2035            let (tx, rx) = oneshot::channel();
 2036            let abs_path = cx.prompt_for_paths(path_prompt_options);
 2037
 2038            cx.spawn_in(window, async move |workspace, cx| {
 2039                let Ok(result) = abs_path.await else {
 2040                    return Ok(());
 2041                };
 2042
 2043                match result {
 2044                    Ok(result) => {
 2045                        tx.send(result).ok();
 2046                    }
 2047                    Err(err) => {
 2048                        let rx = workspace.update_in(cx, |workspace, window, cx| {
 2049                            workspace.show_portal_error(err.to_string(), cx);
 2050                            let prompt = workspace.on_prompt_for_open_path.take().unwrap();
 2051                            let rx = prompt(workspace, lister, window, cx);
 2052                            workspace.on_prompt_for_open_path = Some(prompt);
 2053                            rx
 2054                        })?;
 2055                        if let Ok(path) = rx.await {
 2056                            tx.send(path).ok();
 2057                        }
 2058                    }
 2059                };
 2060                anyhow::Ok(())
 2061            })
 2062            .detach();
 2063
 2064            rx
 2065        }
 2066    }
 2067
 2068    pub fn prompt_for_new_path(
 2069        &mut self,
 2070        lister: DirectoryLister,
 2071        suggested_name: Option<String>,
 2072        window: &mut Window,
 2073        cx: &mut Context<Self>,
 2074    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2075        if self.project.read(cx).is_via_collab()
 2076            || self.project.read(cx).is_via_ssh()
 2077            || !WorkspaceSettings::get_global(cx).use_system_path_prompts
 2078        {
 2079            let prompt = self.on_prompt_for_new_path.take().unwrap();
 2080            let rx = prompt(self, lister, window, cx);
 2081            self.on_prompt_for_new_path = Some(prompt);
 2082            return rx;
 2083        }
 2084
 2085        let (tx, rx) = oneshot::channel();
 2086        cx.spawn_in(window, async move |workspace, cx| {
 2087            let abs_path = workspace.update(cx, |workspace, cx| {
 2088                let relative_to = workspace
 2089                    .most_recent_active_path(cx)
 2090                    .and_then(|p| p.parent().map(|p| p.to_path_buf()))
 2091                    .or_else(|| {
 2092                        let project = workspace.project.read(cx);
 2093                        project.visible_worktrees(cx).find_map(|worktree| {
 2094                            Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
 2095                        })
 2096                    })
 2097                    .or_else(std::env::home_dir)
 2098                    .unwrap_or_else(|| PathBuf::from(""));
 2099                cx.prompt_for_new_path(&relative_to, suggested_name.as_deref())
 2100            })?;
 2101            let abs_path = match abs_path.await? {
 2102                Ok(path) => path,
 2103                Err(err) => {
 2104                    let rx = workspace.update_in(cx, |workspace, window, cx| {
 2105                        workspace.show_portal_error(err.to_string(), cx);
 2106
 2107                        let prompt = workspace.on_prompt_for_new_path.take().unwrap();
 2108                        let rx = prompt(workspace, lister, window, cx);
 2109                        workspace.on_prompt_for_new_path = Some(prompt);
 2110                        rx
 2111                    })?;
 2112                    if let Ok(path) = rx.await {
 2113                        tx.send(path).ok();
 2114                    }
 2115                    return anyhow::Ok(());
 2116                }
 2117            };
 2118
 2119            tx.send(abs_path.map(|path| vec![path])).ok();
 2120            anyhow::Ok(())
 2121        })
 2122        .detach();
 2123
 2124        rx
 2125    }
 2126
 2127    pub fn titlebar_item(&self) -> Option<AnyView> {
 2128        self.titlebar_item.clone()
 2129    }
 2130
 2131    /// Call the given callback with a workspace whose project is local.
 2132    ///
 2133    /// If the given workspace has a local project, then it will be passed
 2134    /// to the callback. Otherwise, a new empty window will be created.
 2135    pub fn with_local_workspace<T, F>(
 2136        &mut self,
 2137        window: &mut Window,
 2138        cx: &mut Context<Self>,
 2139        callback: F,
 2140    ) -> Task<Result<T>>
 2141    where
 2142        T: 'static,
 2143        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
 2144    {
 2145        if self.project.read(cx).is_local() {
 2146            Task::ready(Ok(callback(self, window, cx)))
 2147        } else {
 2148            let env = self.project.read(cx).cli_environment(cx);
 2149            let task = Self::new_local(Vec::new(), self.app_state.clone(), None, env, cx);
 2150            cx.spawn_in(window, async move |_vh, cx| {
 2151                let (workspace, _) = task.await?;
 2152                workspace.update(cx, callback)
 2153            })
 2154        }
 2155    }
 2156
 2157    pub fn worktrees<'a>(&self, cx: &'a App) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2158        self.project.read(cx).worktrees(cx)
 2159    }
 2160
 2161    pub fn visible_worktrees<'a>(
 2162        &self,
 2163        cx: &'a App,
 2164    ) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2165        self.project.read(cx).visible_worktrees(cx)
 2166    }
 2167
 2168    #[cfg(any(test, feature = "test-support"))]
 2169    pub fn worktree_scans_complete(&self, cx: &App) -> impl Future<Output = ()> + 'static + use<> {
 2170        let futures = self
 2171            .worktrees(cx)
 2172            .filter_map(|worktree| worktree.read(cx).as_local())
 2173            .map(|worktree| worktree.scan_complete())
 2174            .collect::<Vec<_>>();
 2175        async move {
 2176            for future in futures {
 2177                future.await;
 2178            }
 2179        }
 2180    }
 2181
 2182    pub fn close_global(cx: &mut App) {
 2183        cx.defer(|cx| {
 2184            cx.windows().iter().find(|window| {
 2185                window
 2186                    .update(cx, |_, window, _| {
 2187                        if window.is_window_active() {
 2188                            //This can only get called when the window's project connection has been lost
 2189                            //so we don't need to prompt the user for anything and instead just close the window
 2190                            window.remove_window();
 2191                            true
 2192                        } else {
 2193                            false
 2194                        }
 2195                    })
 2196                    .unwrap_or(false)
 2197            });
 2198        });
 2199    }
 2200
 2201    pub fn close_window(&mut self, _: &CloseWindow, window: &mut Window, cx: &mut Context<Self>) {
 2202        let prepare = self.prepare_to_close(CloseIntent::CloseWindow, window, cx);
 2203        cx.spawn_in(window, async move |_, cx| {
 2204            if prepare.await? {
 2205                cx.update(|window, _cx| window.remove_window())?;
 2206            }
 2207            anyhow::Ok(())
 2208        })
 2209        .detach_and_log_err(cx)
 2210    }
 2211
 2212    pub fn move_focused_panel_to_next_position(
 2213        &mut self,
 2214        _: &MoveFocusedPanelToNextPosition,
 2215        window: &mut Window,
 2216        cx: &mut Context<Self>,
 2217    ) {
 2218        let docks = self.all_docks();
 2219        let active_dock = docks
 2220            .into_iter()
 2221            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 2222
 2223        if let Some(dock) = active_dock {
 2224            dock.update(cx, |dock, cx| {
 2225                let active_panel = dock
 2226                    .active_panel()
 2227                    .filter(|panel| panel.panel_focus_handle(cx).contains_focused(window, cx));
 2228
 2229                if let Some(panel) = active_panel {
 2230                    panel.move_to_next_position(window, cx);
 2231                }
 2232            })
 2233        }
 2234    }
 2235
 2236    pub fn prepare_to_close(
 2237        &mut self,
 2238        close_intent: CloseIntent,
 2239        window: &mut Window,
 2240        cx: &mut Context<Self>,
 2241    ) -> Task<Result<bool>> {
 2242        let active_call = self.active_call().cloned();
 2243
 2244        // On Linux and Windows, closing the last window should restore the last workspace.
 2245        let save_last_workspace = cfg!(not(target_os = "macos"))
 2246            && close_intent != CloseIntent::ReplaceWindow
 2247            && cx.windows().len() == 1;
 2248
 2249        cx.spawn_in(window, async move |this, cx| {
 2250            let workspace_count = cx.update(|_window, cx| {
 2251                cx.windows()
 2252                    .iter()
 2253                    .filter(|window| window.downcast::<Workspace>().is_some())
 2254                    .count()
 2255            })?;
 2256
 2257            if let Some(active_call) = active_call
 2258                && workspace_count == 1
 2259                && active_call.read_with(cx, |call, _| call.room().is_some())?
 2260            {
 2261                if close_intent == CloseIntent::CloseWindow {
 2262                    let answer = cx.update(|window, cx| {
 2263                        window.prompt(
 2264                            PromptLevel::Warning,
 2265                            "Do you want to leave the current call?",
 2266                            None,
 2267                            &["Close window and hang up", "Cancel"],
 2268                            cx,
 2269                        )
 2270                    })?;
 2271
 2272                    if answer.await.log_err() == Some(1) {
 2273                        return anyhow::Ok(false);
 2274                    } else {
 2275                        active_call
 2276                            .update(cx, |call, cx| call.hang_up(cx))?
 2277                            .await
 2278                            .log_err();
 2279                    }
 2280                }
 2281                if close_intent == CloseIntent::ReplaceWindow {
 2282                    _ = active_call.update(cx, |this, cx| {
 2283                        let workspace = cx
 2284                            .windows()
 2285                            .iter()
 2286                            .filter_map(|window| window.downcast::<Workspace>())
 2287                            .next()
 2288                            .unwrap();
 2289                        let project = workspace.read(cx)?.project.clone();
 2290                        if project.read(cx).is_shared() {
 2291                            this.unshare_project(project, cx)?;
 2292                        }
 2293                        Ok::<_, anyhow::Error>(())
 2294                    })?;
 2295                }
 2296            }
 2297
 2298            let save_result = this
 2299                .update_in(cx, |this, window, cx| {
 2300                    this.save_all_internal(SaveIntent::Close, window, cx)
 2301                })?
 2302                .await;
 2303
 2304            // If we're not quitting, but closing, we remove the workspace from
 2305            // the current session.
 2306            if close_intent != CloseIntent::Quit
 2307                && !save_last_workspace
 2308                && save_result.as_ref().is_ok_and(|&res| res)
 2309            {
 2310                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))?
 2311                    .await;
 2312            }
 2313
 2314            save_result
 2315        })
 2316    }
 2317
 2318    fn save_all(&mut self, action: &SaveAll, window: &mut Window, cx: &mut Context<Self>) {
 2319        self.save_all_internal(
 2320            action.save_intent.unwrap_or(SaveIntent::SaveAll),
 2321            window,
 2322            cx,
 2323        )
 2324        .detach_and_log_err(cx);
 2325    }
 2326
 2327    fn send_keystrokes(
 2328        &mut self,
 2329        action: &SendKeystrokes,
 2330        window: &mut Window,
 2331        cx: &mut Context<Self>,
 2332    ) {
 2333        let keystrokes: Vec<Keystroke> = action
 2334            .0
 2335            .split(' ')
 2336            .flat_map(|k| Keystroke::parse(k).log_err())
 2337            .collect();
 2338        let _ = self.send_keystrokes_impl(keystrokes, window, cx);
 2339    }
 2340
 2341    pub fn send_keystrokes_impl(
 2342        &mut self,
 2343        keystrokes: Vec<Keystroke>,
 2344        window: &mut Window,
 2345        cx: &mut Context<Self>,
 2346    ) -> Shared<Task<()>> {
 2347        let mut state = self.dispatching_keystrokes.borrow_mut();
 2348        if !state.dispatched.insert(keystrokes.clone()) {
 2349            cx.propagate();
 2350            return state.task.clone().unwrap();
 2351        }
 2352
 2353        state.queue.extend(keystrokes);
 2354
 2355        let keystrokes = self.dispatching_keystrokes.clone();
 2356        if state.task.is_none() {
 2357            state.task = Some(
 2358                window
 2359                    .spawn(cx, async move |cx| {
 2360                        // limit to 100 keystrokes to avoid infinite recursion.
 2361                        for _ in 0..100 {
 2362                            let mut state = keystrokes.borrow_mut();
 2363                            let Some(keystroke) = state.queue.pop_front() else {
 2364                                state.dispatched.clear();
 2365                                state.task.take();
 2366                                return;
 2367                            };
 2368                            drop(state);
 2369                            cx.update(|window, cx| {
 2370                                let focused = window.focused(cx);
 2371                                window.dispatch_keystroke(keystroke.clone(), cx);
 2372                                if window.focused(cx) != focused {
 2373                                    // dispatch_keystroke may cause the focus to change.
 2374                                    // draw's side effect is to schedule the FocusChanged events in the current flush effect cycle
 2375                                    // And we need that to happen before the next keystroke to keep vim mode happy...
 2376                                    // (Note that the tests always do this implicitly, so you must manually test with something like:
 2377                                    //   "bindings": { "g z": ["workspace::SendKeystrokes", ": j <enter> u"]}
 2378                                    // )
 2379                                    window.draw(cx).clear();
 2380                                }
 2381                            })
 2382                            .ok();
 2383                        }
 2384
 2385                        *keystrokes.borrow_mut() = Default::default();
 2386                        log::error!("over 100 keystrokes passed to send_keystrokes");
 2387                    })
 2388                    .shared(),
 2389            );
 2390        }
 2391        state.task.clone().unwrap()
 2392    }
 2393
 2394    fn save_all_internal(
 2395        &mut self,
 2396        mut save_intent: SaveIntent,
 2397        window: &mut Window,
 2398        cx: &mut Context<Self>,
 2399    ) -> Task<Result<bool>> {
 2400        if self.project.read(cx).is_disconnected(cx) {
 2401            return Task::ready(Ok(true));
 2402        }
 2403        let dirty_items = self
 2404            .panes
 2405            .iter()
 2406            .flat_map(|pane| {
 2407                pane.read(cx).items().filter_map(|item| {
 2408                    if item.is_dirty(cx) {
 2409                        item.tab_content_text(0, cx);
 2410                        Some((pane.downgrade(), item.boxed_clone()))
 2411                    } else {
 2412                        None
 2413                    }
 2414                })
 2415            })
 2416            .collect::<Vec<_>>();
 2417
 2418        let project = self.project.clone();
 2419        cx.spawn_in(window, async move |workspace, cx| {
 2420            let dirty_items = if save_intent == SaveIntent::Close && !dirty_items.is_empty() {
 2421                let (serialize_tasks, remaining_dirty_items) =
 2422                    workspace.update_in(cx, |workspace, window, cx| {
 2423                        let mut remaining_dirty_items = Vec::new();
 2424                        let mut serialize_tasks = Vec::new();
 2425                        for (pane, item) in dirty_items {
 2426                            if let Some(task) = item
 2427                                .to_serializable_item_handle(cx)
 2428                                .and_then(|handle| handle.serialize(workspace, true, window, cx))
 2429                            {
 2430                                serialize_tasks.push(task);
 2431                            } else {
 2432                                remaining_dirty_items.push((pane, item));
 2433                            }
 2434                        }
 2435                        (serialize_tasks, remaining_dirty_items)
 2436                    })?;
 2437
 2438                futures::future::try_join_all(serialize_tasks).await?;
 2439
 2440                if remaining_dirty_items.len() > 1 {
 2441                    let answer = workspace.update_in(cx, |_, window, cx| {
 2442                        let detail = Pane::file_names_for_prompt(
 2443                            &mut remaining_dirty_items.iter().map(|(_, handle)| handle),
 2444                            cx,
 2445                        );
 2446                        window.prompt(
 2447                            PromptLevel::Warning,
 2448                            "Do you want to save all changes in the following files?",
 2449                            Some(&detail),
 2450                            &["Save all", "Discard all", "Cancel"],
 2451                            cx,
 2452                        )
 2453                    })?;
 2454                    match answer.await.log_err() {
 2455                        Some(0) => save_intent = SaveIntent::SaveAll,
 2456                        Some(1) => save_intent = SaveIntent::Skip,
 2457                        Some(2) => return Ok(false),
 2458                        _ => {}
 2459                    }
 2460                }
 2461
 2462                remaining_dirty_items
 2463            } else {
 2464                dirty_items
 2465            };
 2466
 2467            for (pane, item) in dirty_items {
 2468                let (singleton, project_entry_ids) =
 2469                    cx.update(|_, cx| (item.is_singleton(cx), item.project_entry_ids(cx)))?;
 2470                if (singleton || !project_entry_ids.is_empty())
 2471                    && !Pane::save_item(project.clone(), &pane, &*item, save_intent, cx).await?
 2472                {
 2473                    return Ok(false);
 2474                }
 2475            }
 2476            Ok(true)
 2477        })
 2478    }
 2479
 2480    pub fn open_workspace_for_paths(
 2481        &mut self,
 2482        replace_current_window: bool,
 2483        paths: Vec<PathBuf>,
 2484        window: &mut Window,
 2485        cx: &mut Context<Self>,
 2486    ) -> Task<Result<()>> {
 2487        let window_handle = window.window_handle().downcast::<Self>();
 2488        let is_remote = self.project.read(cx).is_via_collab();
 2489        let has_worktree = self.project.read(cx).worktrees(cx).next().is_some();
 2490        let has_dirty_items = self.items(cx).any(|item| item.is_dirty(cx));
 2491
 2492        let window_to_replace = if replace_current_window {
 2493            window_handle
 2494        } else if is_remote || has_worktree || has_dirty_items {
 2495            None
 2496        } else {
 2497            window_handle
 2498        };
 2499        let app_state = self.app_state.clone();
 2500
 2501        cx.spawn(async move |_, cx| {
 2502            cx.update(|cx| {
 2503                open_paths(
 2504                    &paths,
 2505                    app_state,
 2506                    OpenOptions {
 2507                        replace_window: window_to_replace,
 2508                        ..Default::default()
 2509                    },
 2510                    cx,
 2511                )
 2512            })?
 2513            .await?;
 2514            Ok(())
 2515        })
 2516    }
 2517
 2518    #[allow(clippy::type_complexity)]
 2519    pub fn open_paths(
 2520        &mut self,
 2521        mut abs_paths: Vec<PathBuf>,
 2522        options: OpenOptions,
 2523        pane: Option<WeakEntity<Pane>>,
 2524        window: &mut Window,
 2525        cx: &mut Context<Self>,
 2526    ) -> Task<Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>> {
 2527        let fs = self.app_state.fs.clone();
 2528
 2529        // Sort the paths to ensure we add worktrees for parents before their children.
 2530        abs_paths.sort_unstable();
 2531        cx.spawn_in(window, async move |this, cx| {
 2532            let mut tasks = Vec::with_capacity(abs_paths.len());
 2533
 2534            for abs_path in &abs_paths {
 2535                let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
 2536                    OpenVisible::All => Some(true),
 2537                    OpenVisible::None => Some(false),
 2538                    OpenVisible::OnlyFiles => match fs.metadata(abs_path).await.log_err() {
 2539                        Some(Some(metadata)) => Some(!metadata.is_dir),
 2540                        Some(None) => Some(true),
 2541                        None => None,
 2542                    },
 2543                    OpenVisible::OnlyDirectories => match fs.metadata(abs_path).await.log_err() {
 2544                        Some(Some(metadata)) => Some(metadata.is_dir),
 2545                        Some(None) => Some(false),
 2546                        None => None,
 2547                    },
 2548                };
 2549                let project_path = match visible {
 2550                    Some(visible) => match this
 2551                        .update(cx, |this, cx| {
 2552                            Workspace::project_path_for_path(
 2553                                this.project.clone(),
 2554                                abs_path,
 2555                                visible,
 2556                                cx,
 2557                            )
 2558                        })
 2559                        .log_err()
 2560                    {
 2561                        Some(project_path) => project_path.await.log_err(),
 2562                        None => None,
 2563                    },
 2564                    None => None,
 2565                };
 2566
 2567                let this = this.clone();
 2568                let abs_path: Arc<Path> = SanitizedPath::from(abs_path.clone()).into();
 2569                let fs = fs.clone();
 2570                let pane = pane.clone();
 2571                let task = cx.spawn(async move |cx| {
 2572                    let (worktree, project_path) = project_path?;
 2573                    if fs.is_dir(&abs_path).await {
 2574                        this.update(cx, |workspace, cx| {
 2575                            let worktree = worktree.read(cx);
 2576                            let worktree_abs_path = worktree.abs_path();
 2577                            let entry_id = if abs_path.as_ref() == worktree_abs_path.as_ref() {
 2578                                worktree.root_entry()
 2579                            } else {
 2580                                abs_path
 2581                                    .strip_prefix(worktree_abs_path.as_ref())
 2582                                    .ok()
 2583                                    .and_then(|relative_path| {
 2584                                        worktree.entry_for_path(relative_path)
 2585                                    })
 2586                            }
 2587                            .map(|entry| entry.id);
 2588                            if let Some(entry_id) = entry_id {
 2589                                workspace.project.update(cx, |_, cx| {
 2590                                    cx.emit(project::Event::ActiveEntryChanged(Some(entry_id)));
 2591                                })
 2592                            }
 2593                        })
 2594                        .ok()?;
 2595                        None
 2596                    } else {
 2597                        Some(
 2598                            this.update_in(cx, |this, window, cx| {
 2599                                this.open_path(
 2600                                    project_path,
 2601                                    pane,
 2602                                    options.focus.unwrap_or(true),
 2603                                    window,
 2604                                    cx,
 2605                                )
 2606                            })
 2607                            .ok()?
 2608                            .await,
 2609                        )
 2610                    }
 2611                });
 2612                tasks.push(task);
 2613            }
 2614
 2615            futures::future::join_all(tasks).await
 2616        })
 2617    }
 2618
 2619    pub fn open_resolved_path(
 2620        &mut self,
 2621        path: ResolvedPath,
 2622        window: &mut Window,
 2623        cx: &mut Context<Self>,
 2624    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 2625        match path {
 2626            ResolvedPath::ProjectPath { project_path, .. } => {
 2627                self.open_path(project_path, None, true, window, cx)
 2628            }
 2629            ResolvedPath::AbsPath { path, .. } => self.open_abs_path(
 2630                path,
 2631                OpenOptions {
 2632                    visible: Some(OpenVisible::None),
 2633                    ..Default::default()
 2634                },
 2635                window,
 2636                cx,
 2637            ),
 2638        }
 2639    }
 2640
 2641    pub fn absolute_path_of_worktree(
 2642        &self,
 2643        worktree_id: WorktreeId,
 2644        cx: &mut Context<Self>,
 2645    ) -> Option<PathBuf> {
 2646        self.project
 2647            .read(cx)
 2648            .worktree_for_id(worktree_id, cx)
 2649            // TODO: use `abs_path` or `root_dir`
 2650            .map(|wt| wt.read(cx).abs_path().as_ref().to_path_buf())
 2651    }
 2652
 2653    fn add_folder_to_project(
 2654        &mut self,
 2655        _: &AddFolderToProject,
 2656        window: &mut Window,
 2657        cx: &mut Context<Self>,
 2658    ) {
 2659        let project = self.project.read(cx);
 2660        if project.is_via_collab() {
 2661            self.show_error(
 2662                &anyhow!("You cannot add folders to someone else's project"),
 2663                cx,
 2664            );
 2665            return;
 2666        }
 2667        let paths = self.prompt_for_open_path(
 2668            PathPromptOptions {
 2669                files: false,
 2670                directories: true,
 2671                multiple: true,
 2672                prompt: None,
 2673            },
 2674            DirectoryLister::Project(self.project.clone()),
 2675            window,
 2676            cx,
 2677        );
 2678        cx.spawn_in(window, async move |this, cx| {
 2679            if let Some(paths) = paths.await.log_err().flatten() {
 2680                let results = this
 2681                    .update_in(cx, |this, window, cx| {
 2682                        this.open_paths(
 2683                            paths,
 2684                            OpenOptions {
 2685                                visible: Some(OpenVisible::All),
 2686                                ..Default::default()
 2687                            },
 2688                            None,
 2689                            window,
 2690                            cx,
 2691                        )
 2692                    })?
 2693                    .await;
 2694                for result in results.into_iter().flatten() {
 2695                    result.log_err();
 2696                }
 2697            }
 2698            anyhow::Ok(())
 2699        })
 2700        .detach_and_log_err(cx);
 2701    }
 2702
 2703    pub fn project_path_for_path(
 2704        project: Entity<Project>,
 2705        abs_path: &Path,
 2706        visible: bool,
 2707        cx: &mut App,
 2708    ) -> Task<Result<(Entity<Worktree>, ProjectPath)>> {
 2709        let entry = project.update(cx, |project, cx| {
 2710            project.find_or_create_worktree(abs_path, visible, cx)
 2711        });
 2712        cx.spawn(async move |cx| {
 2713            let (worktree, path) = entry.await?;
 2714            let worktree_id = worktree.read_with(cx, |t, _| t.id())?;
 2715            Ok((
 2716                worktree,
 2717                ProjectPath {
 2718                    worktree_id,
 2719                    path: path.into(),
 2720                },
 2721            ))
 2722        })
 2723    }
 2724
 2725    pub fn items<'a>(&'a self, cx: &'a App) -> impl 'a + Iterator<Item = &'a Box<dyn ItemHandle>> {
 2726        self.panes.iter().flat_map(|pane| pane.read(cx).items())
 2727    }
 2728
 2729    pub fn item_of_type<T: Item>(&self, cx: &App) -> Option<Entity<T>> {
 2730        self.items_of_type(cx).max_by_key(|item| item.item_id())
 2731    }
 2732
 2733    pub fn items_of_type<'a, T: Item>(
 2734        &'a self,
 2735        cx: &'a App,
 2736    ) -> impl 'a + Iterator<Item = Entity<T>> {
 2737        self.panes
 2738            .iter()
 2739            .flat_map(|pane| pane.read(cx).items_of_type())
 2740    }
 2741
 2742    pub fn active_item(&self, cx: &App) -> Option<Box<dyn ItemHandle>> {
 2743        self.active_pane().read(cx).active_item()
 2744    }
 2745
 2746    pub fn active_item_as<I: 'static>(&self, cx: &App) -> Option<Entity<I>> {
 2747        let item = self.active_item(cx)?;
 2748        item.to_any().downcast::<I>().ok()
 2749    }
 2750
 2751    fn active_project_path(&self, cx: &App) -> Option<ProjectPath> {
 2752        self.active_item(cx).and_then(|item| item.project_path(cx))
 2753    }
 2754
 2755    pub fn most_recent_active_path(&self, cx: &App) -> Option<PathBuf> {
 2756        self.recent_navigation_history_iter(cx)
 2757            .filter_map(|(path, abs_path)| {
 2758                let worktree = self
 2759                    .project
 2760                    .read(cx)
 2761                    .worktree_for_id(path.worktree_id, cx)?;
 2762                if worktree.read(cx).is_visible() {
 2763                    abs_path
 2764                } else {
 2765                    None
 2766                }
 2767            })
 2768            .next()
 2769    }
 2770
 2771    pub fn save_active_item(
 2772        &mut self,
 2773        save_intent: SaveIntent,
 2774        window: &mut Window,
 2775        cx: &mut App,
 2776    ) -> Task<Result<()>> {
 2777        let project = self.project.clone();
 2778        let pane = self.active_pane();
 2779        let item = pane.read(cx).active_item();
 2780        let pane = pane.downgrade();
 2781
 2782        window.spawn(cx, async move |cx| {
 2783            if let Some(item) = item {
 2784                Pane::save_item(project, &pane, item.as_ref(), save_intent, cx)
 2785                    .await
 2786                    .map(|_| ())
 2787            } else {
 2788                Ok(())
 2789            }
 2790        })
 2791    }
 2792
 2793    pub fn close_inactive_items_and_panes(
 2794        &mut self,
 2795        action: &CloseInactiveTabsAndPanes,
 2796        window: &mut Window,
 2797        cx: &mut Context<Self>,
 2798    ) {
 2799        if let Some(task) = self.close_all_internal(
 2800            true,
 2801            action.save_intent.unwrap_or(SaveIntent::Close),
 2802            window,
 2803            cx,
 2804        ) {
 2805            task.detach_and_log_err(cx)
 2806        }
 2807    }
 2808
 2809    pub fn close_all_items_and_panes(
 2810        &mut self,
 2811        action: &CloseAllItemsAndPanes,
 2812        window: &mut Window,
 2813        cx: &mut Context<Self>,
 2814    ) {
 2815        if let Some(task) = self.close_all_internal(
 2816            false,
 2817            action.save_intent.unwrap_or(SaveIntent::Close),
 2818            window,
 2819            cx,
 2820        ) {
 2821            task.detach_and_log_err(cx)
 2822        }
 2823    }
 2824
 2825    fn close_all_internal(
 2826        &mut self,
 2827        retain_active_pane: bool,
 2828        save_intent: SaveIntent,
 2829        window: &mut Window,
 2830        cx: &mut Context<Self>,
 2831    ) -> Option<Task<Result<()>>> {
 2832        let current_pane = self.active_pane();
 2833
 2834        let mut tasks = Vec::new();
 2835
 2836        if retain_active_pane {
 2837            let current_pane_close = current_pane.update(cx, |pane, cx| {
 2838                pane.close_other_items(
 2839                    &CloseOtherItems {
 2840                        save_intent: None,
 2841                        close_pinned: false,
 2842                    },
 2843                    None,
 2844                    window,
 2845                    cx,
 2846                )
 2847            });
 2848
 2849            tasks.push(current_pane_close);
 2850        }
 2851
 2852        for pane in self.panes() {
 2853            if retain_active_pane && pane.entity_id() == current_pane.entity_id() {
 2854                continue;
 2855            }
 2856
 2857            let close_pane_items = pane.update(cx, |pane: &mut Pane, cx| {
 2858                pane.close_all_items(
 2859                    &CloseAllItems {
 2860                        save_intent: Some(save_intent),
 2861                        close_pinned: false,
 2862                    },
 2863                    window,
 2864                    cx,
 2865                )
 2866            });
 2867
 2868            tasks.push(close_pane_items)
 2869        }
 2870
 2871        if tasks.is_empty() {
 2872            None
 2873        } else {
 2874            Some(cx.spawn_in(window, async move |_, _| {
 2875                for task in tasks {
 2876                    task.await?
 2877                }
 2878                Ok(())
 2879            }))
 2880        }
 2881    }
 2882
 2883    pub fn is_dock_at_position_open(&self, position: DockPosition, cx: &mut Context<Self>) -> bool {
 2884        self.dock_at_position(position).read(cx).is_open()
 2885    }
 2886
 2887    pub fn toggle_dock(
 2888        &mut self,
 2889        dock_side: DockPosition,
 2890        window: &mut Window,
 2891        cx: &mut Context<Self>,
 2892    ) {
 2893        let dock = self.dock_at_position(dock_side);
 2894        let mut focus_center = false;
 2895        let mut reveal_dock = false;
 2896        dock.update(cx, |dock, cx| {
 2897            let other_is_zoomed = self.zoomed.is_some() && self.zoomed_position != Some(dock_side);
 2898            let was_visible = dock.is_open() && !other_is_zoomed;
 2899            dock.set_open(!was_visible, window, cx);
 2900
 2901            if dock.active_panel().is_none() {
 2902                let Some(panel_ix) = dock
 2903                    .first_enabled_panel_idx(cx)
 2904                    .log_with_level(log::Level::Info)
 2905                else {
 2906                    return;
 2907                };
 2908                dock.activate_panel(panel_ix, window, cx);
 2909            }
 2910
 2911            if let Some(active_panel) = dock.active_panel() {
 2912                if was_visible {
 2913                    if active_panel
 2914                        .panel_focus_handle(cx)
 2915                        .contains_focused(window, cx)
 2916                    {
 2917                        focus_center = true;
 2918                    }
 2919                } else {
 2920                    let focus_handle = &active_panel.panel_focus_handle(cx);
 2921                    window.focus(focus_handle);
 2922                    reveal_dock = true;
 2923                }
 2924            }
 2925        });
 2926
 2927        if reveal_dock {
 2928            self.dismiss_zoomed_items_to_reveal(Some(dock_side), window, cx);
 2929        }
 2930
 2931        if focus_center {
 2932            self.active_pane
 2933                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 2934        }
 2935
 2936        cx.notify();
 2937        self.serialize_workspace(window, cx);
 2938    }
 2939
 2940    fn active_dock(&self, window: &Window, cx: &Context<Self>) -> Option<&Entity<Dock>> {
 2941        self.all_docks().into_iter().find(|&dock| {
 2942            dock.read(cx).is_open() && dock.focus_handle(cx).contains_focused(window, cx)
 2943        })
 2944    }
 2945
 2946    fn close_active_dock(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
 2947        if let Some(dock) = self.active_dock(window, cx) {
 2948            dock.update(cx, |dock, cx| {
 2949                dock.set_open(false, window, cx);
 2950            });
 2951            return true;
 2952        }
 2953        false
 2954    }
 2955
 2956    pub fn close_all_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 2957        for dock in self.all_docks() {
 2958            dock.update(cx, |dock, cx| {
 2959                dock.set_open(false, window, cx);
 2960            });
 2961        }
 2962
 2963        cx.focus_self(window);
 2964        cx.notify();
 2965        self.serialize_workspace(window, cx);
 2966    }
 2967
 2968    /// Transfer focus to the panel of the given type.
 2969    pub fn focus_panel<T: Panel>(
 2970        &mut self,
 2971        window: &mut Window,
 2972        cx: &mut Context<Self>,
 2973    ) -> Option<Entity<T>> {
 2974        let panel = self.focus_or_unfocus_panel::<T>(window, cx, |_, _, _| true)?;
 2975        panel.to_any().downcast().ok()
 2976    }
 2977
 2978    /// Focus the panel of the given type if it isn't already focused. If it is
 2979    /// already focused, then transfer focus back to the workspace center.
 2980    pub fn toggle_panel_focus<T: Panel>(
 2981        &mut self,
 2982        window: &mut Window,
 2983        cx: &mut Context<Self>,
 2984    ) -> bool {
 2985        let mut did_focus_panel = false;
 2986        self.focus_or_unfocus_panel::<T>(window, cx, |panel, window, cx| {
 2987            did_focus_panel = !panel.panel_focus_handle(cx).contains_focused(window, cx);
 2988            did_focus_panel
 2989        });
 2990        did_focus_panel
 2991    }
 2992
 2993    pub fn activate_panel_for_proto_id(
 2994        &mut self,
 2995        panel_id: PanelId,
 2996        window: &mut Window,
 2997        cx: &mut Context<Self>,
 2998    ) -> Option<Arc<dyn PanelHandle>> {
 2999        let mut panel = None;
 3000        for dock in self.all_docks() {
 3001            if let Some(panel_index) = dock.read(cx).panel_index_for_proto_id(panel_id) {
 3002                panel = dock.update(cx, |dock, cx| {
 3003                    dock.activate_panel(panel_index, window, cx);
 3004                    dock.set_open(true, window, cx);
 3005                    dock.active_panel().cloned()
 3006                });
 3007                break;
 3008            }
 3009        }
 3010
 3011        if panel.is_some() {
 3012            cx.notify();
 3013            self.serialize_workspace(window, cx);
 3014        }
 3015
 3016        panel
 3017    }
 3018
 3019    /// Focus or unfocus the given panel type, depending on the given callback.
 3020    fn focus_or_unfocus_panel<T: Panel>(
 3021        &mut self,
 3022        window: &mut Window,
 3023        cx: &mut Context<Self>,
 3024        mut should_focus: impl FnMut(&dyn PanelHandle, &mut Window, &mut Context<Dock>) -> bool,
 3025    ) -> Option<Arc<dyn PanelHandle>> {
 3026        let mut result_panel = None;
 3027        let mut serialize = false;
 3028        for dock in self.all_docks() {
 3029            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3030                let mut focus_center = false;
 3031                let panel = dock.update(cx, |dock, cx| {
 3032                    dock.activate_panel(panel_index, window, cx);
 3033
 3034                    let panel = dock.active_panel().cloned();
 3035                    if let Some(panel) = panel.as_ref() {
 3036                        if should_focus(&**panel, window, cx) {
 3037                            dock.set_open(true, window, cx);
 3038                            panel.panel_focus_handle(cx).focus(window);
 3039                        } else {
 3040                            focus_center = true;
 3041                        }
 3042                    }
 3043                    panel
 3044                });
 3045
 3046                if focus_center {
 3047                    self.active_pane
 3048                        .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3049                }
 3050
 3051                result_panel = panel;
 3052                serialize = true;
 3053                break;
 3054            }
 3055        }
 3056
 3057        if serialize {
 3058            self.serialize_workspace(window, cx);
 3059        }
 3060
 3061        cx.notify();
 3062        result_panel
 3063    }
 3064
 3065    /// Open the panel of the given type
 3066    pub fn open_panel<T: Panel>(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3067        for dock in self.all_docks() {
 3068            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3069                dock.update(cx, |dock, cx| {
 3070                    dock.activate_panel(panel_index, window, cx);
 3071                    dock.set_open(true, window, cx);
 3072                });
 3073            }
 3074        }
 3075    }
 3076
 3077    pub fn panel<T: Panel>(&self, cx: &App) -> Option<Entity<T>> {
 3078        self.all_docks()
 3079            .iter()
 3080            .find_map(|dock| dock.read(cx).panel::<T>())
 3081    }
 3082
 3083    fn dismiss_zoomed_items_to_reveal(
 3084        &mut self,
 3085        dock_to_reveal: Option<DockPosition>,
 3086        window: &mut Window,
 3087        cx: &mut Context<Self>,
 3088    ) {
 3089        // If a center pane is zoomed, unzoom it.
 3090        for pane in &self.panes {
 3091            if pane != &self.active_pane || dock_to_reveal.is_some() {
 3092                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 3093            }
 3094        }
 3095
 3096        // If another dock is zoomed, hide it.
 3097        let mut focus_center = false;
 3098        for dock in self.all_docks() {
 3099            dock.update(cx, |dock, cx| {
 3100                if Some(dock.position()) != dock_to_reveal
 3101                    && let Some(panel) = dock.active_panel()
 3102                    && panel.is_zoomed(window, cx)
 3103                {
 3104                    focus_center |= panel.panel_focus_handle(cx).contains_focused(window, cx);
 3105                    dock.set_open(false, window, cx);
 3106                }
 3107            });
 3108        }
 3109
 3110        if focus_center {
 3111            self.active_pane
 3112                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3113        }
 3114
 3115        if self.zoomed_position != dock_to_reveal {
 3116            self.zoomed = None;
 3117            self.zoomed_position = None;
 3118            cx.emit(Event::ZoomChanged);
 3119        }
 3120
 3121        cx.notify();
 3122    }
 3123
 3124    fn add_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 3125        let pane = cx.new(|cx| {
 3126            let mut pane = Pane::new(
 3127                self.weak_handle(),
 3128                self.project.clone(),
 3129                self.pane_history_timestamp.clone(),
 3130                None,
 3131                NewFile.boxed_clone(),
 3132                window,
 3133                cx,
 3134            );
 3135            pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 3136            pane
 3137        });
 3138        cx.subscribe_in(&pane, window, Self::handle_pane_event)
 3139            .detach();
 3140        self.panes.push(pane.clone());
 3141
 3142        window.focus(&pane.focus_handle(cx));
 3143
 3144        cx.emit(Event::PaneAdded(pane.clone()));
 3145        pane
 3146    }
 3147
 3148    pub fn add_item_to_center(
 3149        &mut self,
 3150        item: Box<dyn ItemHandle>,
 3151        window: &mut Window,
 3152        cx: &mut Context<Self>,
 3153    ) -> bool {
 3154        if let Some(center_pane) = self.last_active_center_pane.clone() {
 3155            if let Some(center_pane) = center_pane.upgrade() {
 3156                center_pane.update(cx, |pane, cx| {
 3157                    pane.add_item(item, true, true, None, window, cx)
 3158                });
 3159                true
 3160            } else {
 3161                false
 3162            }
 3163        } else {
 3164            false
 3165        }
 3166    }
 3167
 3168    pub fn add_item_to_active_pane(
 3169        &mut self,
 3170        item: Box<dyn ItemHandle>,
 3171        destination_index: Option<usize>,
 3172        focus_item: bool,
 3173        window: &mut Window,
 3174        cx: &mut App,
 3175    ) {
 3176        self.add_item(
 3177            self.active_pane.clone(),
 3178            item,
 3179            destination_index,
 3180            false,
 3181            focus_item,
 3182            window,
 3183            cx,
 3184        )
 3185    }
 3186
 3187    pub fn add_item(
 3188        &mut self,
 3189        pane: Entity<Pane>,
 3190        item: Box<dyn ItemHandle>,
 3191        destination_index: Option<usize>,
 3192        activate_pane: bool,
 3193        focus_item: bool,
 3194        window: &mut Window,
 3195        cx: &mut App,
 3196    ) {
 3197        if let Some(text) = item.telemetry_event_text(cx) {
 3198            telemetry::event!(text);
 3199        }
 3200
 3201        pane.update(cx, |pane, cx| {
 3202            pane.add_item(
 3203                item,
 3204                activate_pane,
 3205                focus_item,
 3206                destination_index,
 3207                window,
 3208                cx,
 3209            )
 3210        });
 3211    }
 3212
 3213    pub fn split_item(
 3214        &mut self,
 3215        split_direction: SplitDirection,
 3216        item: Box<dyn ItemHandle>,
 3217        window: &mut Window,
 3218        cx: &mut Context<Self>,
 3219    ) {
 3220        let new_pane = self.split_pane(self.active_pane.clone(), split_direction, window, cx);
 3221        self.add_item(new_pane, item, None, true, true, window, cx);
 3222    }
 3223
 3224    pub fn open_abs_path(
 3225        &mut self,
 3226        abs_path: PathBuf,
 3227        options: OpenOptions,
 3228        window: &mut Window,
 3229        cx: &mut Context<Self>,
 3230    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3231        cx.spawn_in(window, async move |workspace, cx| {
 3232            let open_paths_task_result = workspace
 3233                .update_in(cx, |workspace, window, cx| {
 3234                    workspace.open_paths(vec![abs_path.clone()], options, None, window, cx)
 3235                })
 3236                .with_context(|| format!("open abs path {abs_path:?} task spawn"))?
 3237                .await;
 3238            anyhow::ensure!(
 3239                open_paths_task_result.len() == 1,
 3240                "open abs path {abs_path:?} task returned incorrect number of results"
 3241            );
 3242            match open_paths_task_result
 3243                .into_iter()
 3244                .next()
 3245                .expect("ensured single task result")
 3246            {
 3247                Some(open_result) => {
 3248                    open_result.with_context(|| format!("open abs path {abs_path:?} task join"))
 3249                }
 3250                None => anyhow::bail!("open abs path {abs_path:?} task returned None"),
 3251            }
 3252        })
 3253    }
 3254
 3255    pub fn split_abs_path(
 3256        &mut self,
 3257        abs_path: PathBuf,
 3258        visible: bool,
 3259        window: &mut Window,
 3260        cx: &mut Context<Self>,
 3261    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3262        let project_path_task =
 3263            Workspace::project_path_for_path(self.project.clone(), &abs_path, visible, cx);
 3264        cx.spawn_in(window, async move |this, cx| {
 3265            let (_, path) = project_path_task.await?;
 3266            this.update_in(cx, |this, window, cx| this.split_path(path, window, cx))?
 3267                .await
 3268        })
 3269    }
 3270
 3271    pub fn open_path(
 3272        &mut self,
 3273        path: impl Into<ProjectPath>,
 3274        pane: Option<WeakEntity<Pane>>,
 3275        focus_item: bool,
 3276        window: &mut Window,
 3277        cx: &mut App,
 3278    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3279        self.open_path_preview(path, pane, focus_item, false, true, window, cx)
 3280    }
 3281
 3282    pub fn open_path_preview(
 3283        &mut self,
 3284        path: impl Into<ProjectPath>,
 3285        pane: Option<WeakEntity<Pane>>,
 3286        focus_item: bool,
 3287        allow_preview: bool,
 3288        activate: bool,
 3289        window: &mut Window,
 3290        cx: &mut App,
 3291    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3292        let pane = pane.unwrap_or_else(|| {
 3293            self.last_active_center_pane.clone().unwrap_or_else(|| {
 3294                self.panes
 3295                    .first()
 3296                    .expect("There must be an active pane")
 3297                    .downgrade()
 3298            })
 3299        });
 3300
 3301        let project_path = path.into();
 3302        let task = self.load_path(project_path.clone(), window, cx);
 3303        window.spawn(cx, async move |cx| {
 3304            let (project_entry_id, build_item) = task.await?;
 3305
 3306            pane.update_in(cx, |pane, window, cx| {
 3307                pane.open_item(
 3308                    project_entry_id,
 3309                    project_path,
 3310                    focus_item,
 3311                    allow_preview,
 3312                    activate,
 3313                    None,
 3314                    window,
 3315                    cx,
 3316                    build_item,
 3317                )
 3318            })
 3319        })
 3320    }
 3321
 3322    pub fn split_path(
 3323        &mut self,
 3324        path: impl Into<ProjectPath>,
 3325        window: &mut Window,
 3326        cx: &mut Context<Self>,
 3327    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3328        self.split_path_preview(path, false, None, window, cx)
 3329    }
 3330
 3331    pub fn split_path_preview(
 3332        &mut self,
 3333        path: impl Into<ProjectPath>,
 3334        allow_preview: bool,
 3335        split_direction: Option<SplitDirection>,
 3336        window: &mut Window,
 3337        cx: &mut Context<Self>,
 3338    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3339        let pane = self.last_active_center_pane.clone().unwrap_or_else(|| {
 3340            self.panes
 3341                .first()
 3342                .expect("There must be an active pane")
 3343                .downgrade()
 3344        });
 3345
 3346        if let Member::Pane(center_pane) = &self.center.root
 3347            && center_pane.read(cx).items_len() == 0
 3348        {
 3349            return self.open_path(path, Some(pane), true, window, cx);
 3350        }
 3351
 3352        let project_path = path.into();
 3353        let task = self.load_path(project_path.clone(), window, cx);
 3354        cx.spawn_in(window, async move |this, cx| {
 3355            let (project_entry_id, build_item) = task.await?;
 3356            this.update_in(cx, move |this, window, cx| -> Option<_> {
 3357                let pane = pane.upgrade()?;
 3358                let new_pane = this.split_pane(
 3359                    pane,
 3360                    split_direction.unwrap_or(SplitDirection::Right),
 3361                    window,
 3362                    cx,
 3363                );
 3364                new_pane.update(cx, |new_pane, cx| {
 3365                    Some(new_pane.open_item(
 3366                        project_entry_id,
 3367                        project_path,
 3368                        true,
 3369                        allow_preview,
 3370                        true,
 3371                        None,
 3372                        window,
 3373                        cx,
 3374                        build_item,
 3375                    ))
 3376                })
 3377            })
 3378            .map(|option| option.context("pane was dropped"))?
 3379        })
 3380    }
 3381
 3382    fn load_path(
 3383        &mut self,
 3384        path: ProjectPath,
 3385        window: &mut Window,
 3386        cx: &mut App,
 3387    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
 3388        let registry = cx.default_global::<ProjectItemRegistry>().clone();
 3389        registry.open_path(self.project(), &path, window, cx)
 3390    }
 3391
 3392    pub fn find_project_item<T>(
 3393        &self,
 3394        pane: &Entity<Pane>,
 3395        project_item: &Entity<T::Item>,
 3396        cx: &App,
 3397    ) -> Option<Entity<T>>
 3398    where
 3399        T: ProjectItem,
 3400    {
 3401        use project::ProjectItem as _;
 3402        let project_item = project_item.read(cx);
 3403        let entry_id = project_item.entry_id(cx);
 3404        let project_path = project_item.project_path(cx);
 3405
 3406        let mut item = None;
 3407        if let Some(entry_id) = entry_id {
 3408            item = pane.read(cx).item_for_entry(entry_id, cx);
 3409        }
 3410        if item.is_none()
 3411            && let Some(project_path) = project_path
 3412        {
 3413            item = pane.read(cx).item_for_path(project_path, cx);
 3414        }
 3415
 3416        item.and_then(|item| item.downcast::<T>())
 3417    }
 3418
 3419    pub fn is_project_item_open<T>(
 3420        &self,
 3421        pane: &Entity<Pane>,
 3422        project_item: &Entity<T::Item>,
 3423        cx: &App,
 3424    ) -> bool
 3425    where
 3426        T: ProjectItem,
 3427    {
 3428        self.find_project_item::<T>(pane, project_item, cx)
 3429            .is_some()
 3430    }
 3431
 3432    pub fn open_project_item<T>(
 3433        &mut self,
 3434        pane: Entity<Pane>,
 3435        project_item: Entity<T::Item>,
 3436        activate_pane: bool,
 3437        focus_item: bool,
 3438        window: &mut Window,
 3439        cx: &mut Context<Self>,
 3440    ) -> Entity<T>
 3441    where
 3442        T: ProjectItem,
 3443    {
 3444        if let Some(item) = self.find_project_item(&pane, &project_item, cx) {
 3445            self.activate_item(&item, activate_pane, focus_item, window, cx);
 3446            return item;
 3447        }
 3448
 3449        let item = pane.update(cx, |pane, cx| {
 3450            cx.new(|cx| {
 3451                T::for_project_item(self.project().clone(), Some(pane), project_item, window, cx)
 3452            })
 3453        });
 3454        let item_id = item.item_id();
 3455        let mut destination_index = None;
 3456        pane.update(cx, |pane, cx| {
 3457            if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation
 3458                && let Some(preview_item_id) = pane.preview_item_id()
 3459                && preview_item_id != item_id
 3460            {
 3461                destination_index = pane.close_current_preview_item(window, cx);
 3462            }
 3463            pane.set_preview_item_id(Some(item.item_id()), cx)
 3464        });
 3465
 3466        self.add_item(
 3467            pane,
 3468            Box::new(item.clone()),
 3469            destination_index,
 3470            activate_pane,
 3471            focus_item,
 3472            window,
 3473            cx,
 3474        );
 3475        item
 3476    }
 3477
 3478    pub fn open_shared_screen(
 3479        &mut self,
 3480        peer_id: PeerId,
 3481        window: &mut Window,
 3482        cx: &mut Context<Self>,
 3483    ) {
 3484        if let Some(shared_screen) =
 3485            self.shared_screen_for_peer(peer_id, &self.active_pane, window, cx)
 3486        {
 3487            self.active_pane.update(cx, |pane, cx| {
 3488                pane.add_item(Box::new(shared_screen), false, true, None, window, cx)
 3489            });
 3490        }
 3491    }
 3492
 3493    pub fn activate_item(
 3494        &mut self,
 3495        item: &dyn ItemHandle,
 3496        activate_pane: bool,
 3497        focus_item: bool,
 3498        window: &mut Window,
 3499        cx: &mut App,
 3500    ) -> bool {
 3501        let result = self.panes.iter().find_map(|pane| {
 3502            pane.read(cx)
 3503                .index_for_item(item)
 3504                .map(|ix| (pane.clone(), ix))
 3505        });
 3506        if let Some((pane, ix)) = result {
 3507            pane.update(cx, |pane, cx| {
 3508                pane.activate_item(ix, activate_pane, focus_item, window, cx)
 3509            });
 3510            true
 3511        } else {
 3512            false
 3513        }
 3514    }
 3515
 3516    fn activate_pane_at_index(
 3517        &mut self,
 3518        action: &ActivatePane,
 3519        window: &mut Window,
 3520        cx: &mut Context<Self>,
 3521    ) {
 3522        let panes = self.center.panes();
 3523        if let Some(pane) = panes.get(action.0).map(|p| (*p).clone()) {
 3524            window.focus(&pane.focus_handle(cx));
 3525        } else {
 3526            self.split_and_clone(self.active_pane.clone(), SplitDirection::Right, window, cx);
 3527        }
 3528    }
 3529
 3530    fn move_item_to_pane_at_index(
 3531        &mut self,
 3532        action: &MoveItemToPane,
 3533        window: &mut Window,
 3534        cx: &mut Context<Self>,
 3535    ) {
 3536        let panes = self.center.panes();
 3537        let destination = match panes.get(action.destination) {
 3538            Some(&destination) => destination.clone(),
 3539            None => {
 3540                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3541                    return;
 3542                }
 3543                let direction = SplitDirection::Right;
 3544                let split_off_pane = self
 3545                    .find_pane_in_direction(direction, cx)
 3546                    .unwrap_or_else(|| self.active_pane.clone());
 3547                let new_pane = self.add_pane(window, cx);
 3548                if self
 3549                    .center
 3550                    .split(&split_off_pane, &new_pane, direction)
 3551                    .log_err()
 3552                    .is_none()
 3553                {
 3554                    return;
 3555                };
 3556                new_pane
 3557            }
 3558        };
 3559
 3560        if action.clone {
 3561            clone_active_item(
 3562                self.database_id(),
 3563                &self.active_pane,
 3564                &destination,
 3565                action.focus,
 3566                window,
 3567                cx,
 3568            )
 3569        } else {
 3570            move_active_item(
 3571                &self.active_pane,
 3572                &destination,
 3573                action.focus,
 3574                true,
 3575                window,
 3576                cx,
 3577            )
 3578        }
 3579    }
 3580
 3581    pub fn activate_next_pane(&mut self, window: &mut Window, cx: &mut App) {
 3582        let panes = self.center.panes();
 3583        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3584            let next_ix = (ix + 1) % panes.len();
 3585            let next_pane = panes[next_ix].clone();
 3586            window.focus(&next_pane.focus_handle(cx));
 3587        }
 3588    }
 3589
 3590    pub fn activate_previous_pane(&mut self, window: &mut Window, cx: &mut App) {
 3591        let panes = self.center.panes();
 3592        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3593            let prev_ix = cmp::min(ix.wrapping_sub(1), panes.len() - 1);
 3594            let prev_pane = panes[prev_ix].clone();
 3595            window.focus(&prev_pane.focus_handle(cx));
 3596        }
 3597    }
 3598
 3599    pub fn activate_pane_in_direction(
 3600        &mut self,
 3601        direction: SplitDirection,
 3602        window: &mut Window,
 3603        cx: &mut App,
 3604    ) {
 3605        use ActivateInDirectionTarget as Target;
 3606        enum Origin {
 3607            LeftDock,
 3608            RightDock,
 3609            BottomDock,
 3610            Center,
 3611        }
 3612
 3613        let origin: Origin = [
 3614            (&self.left_dock, Origin::LeftDock),
 3615            (&self.right_dock, Origin::RightDock),
 3616            (&self.bottom_dock, Origin::BottomDock),
 3617        ]
 3618        .into_iter()
 3619        .find_map(|(dock, origin)| {
 3620            if dock.focus_handle(cx).contains_focused(window, cx) && dock.read(cx).is_open() {
 3621                Some(origin)
 3622            } else {
 3623                None
 3624            }
 3625        })
 3626        .unwrap_or(Origin::Center);
 3627
 3628        let get_last_active_pane = || {
 3629            let pane = self
 3630                .last_active_center_pane
 3631                .clone()
 3632                .unwrap_or_else(|| {
 3633                    self.panes
 3634                        .first()
 3635                        .expect("There must be an active pane")
 3636                        .downgrade()
 3637                })
 3638                .upgrade()?;
 3639            (pane.read(cx).items_len() != 0).then_some(pane)
 3640        };
 3641
 3642        let try_dock =
 3643            |dock: &Entity<Dock>| dock.read(cx).is_open().then(|| Target::Dock(dock.clone()));
 3644
 3645        let target = match (origin, direction) {
 3646            // We're in the center, so we first try to go to a different pane,
 3647            // otherwise try to go to a dock.
 3648            (Origin::Center, direction) => {
 3649                if let Some(pane) = self.find_pane_in_direction(direction, cx) {
 3650                    Some(Target::Pane(pane))
 3651                } else {
 3652                    match direction {
 3653                        SplitDirection::Up => None,
 3654                        SplitDirection::Down => try_dock(&self.bottom_dock),
 3655                        SplitDirection::Left => try_dock(&self.left_dock),
 3656                        SplitDirection::Right => try_dock(&self.right_dock),
 3657                    }
 3658                }
 3659            }
 3660
 3661            (Origin::LeftDock, SplitDirection::Right) => {
 3662                if let Some(last_active_pane) = get_last_active_pane() {
 3663                    Some(Target::Pane(last_active_pane))
 3664                } else {
 3665                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.right_dock))
 3666                }
 3667            }
 3668
 3669            (Origin::LeftDock, SplitDirection::Down)
 3670            | (Origin::RightDock, SplitDirection::Down) => try_dock(&self.bottom_dock),
 3671
 3672            (Origin::BottomDock, SplitDirection::Up) => get_last_active_pane().map(Target::Pane),
 3673            (Origin::BottomDock, SplitDirection::Left) => try_dock(&self.left_dock),
 3674            (Origin::BottomDock, SplitDirection::Right) => try_dock(&self.right_dock),
 3675
 3676            (Origin::RightDock, SplitDirection::Left) => {
 3677                if let Some(last_active_pane) = get_last_active_pane() {
 3678                    Some(Target::Pane(last_active_pane))
 3679                } else {
 3680                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.left_dock))
 3681                }
 3682            }
 3683
 3684            _ => None,
 3685        };
 3686
 3687        match target {
 3688            Some(ActivateInDirectionTarget::Pane(pane)) => {
 3689                let pane = pane.read(cx);
 3690                if let Some(item) = pane.active_item() {
 3691                    item.item_focus_handle(cx).focus(window);
 3692                } else {
 3693                    log::error!(
 3694                        "Could not find a focus target when in switching focus in {direction} direction for a pane",
 3695                    );
 3696                }
 3697            }
 3698            Some(ActivateInDirectionTarget::Dock(dock)) => {
 3699                // Defer this to avoid a panic when the dock's active panel is already on the stack.
 3700                window.defer(cx, move |window, cx| {
 3701                    let dock = dock.read(cx);
 3702                    if let Some(panel) = dock.active_panel() {
 3703                        panel.panel_focus_handle(cx).focus(window);
 3704                    } else {
 3705                        log::error!("Could not find a focus target when in switching focus in {direction} direction for a {:?} dock", dock.position());
 3706                    }
 3707                })
 3708            }
 3709            None => {}
 3710        }
 3711    }
 3712
 3713    pub fn move_item_to_pane_in_direction(
 3714        &mut self,
 3715        action: &MoveItemToPaneInDirection,
 3716        window: &mut Window,
 3717        cx: &mut Context<Self>,
 3718    ) {
 3719        let destination = match self.find_pane_in_direction(action.direction, cx) {
 3720            Some(destination) => destination,
 3721            None => {
 3722                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3723                    return;
 3724                }
 3725                let new_pane = self.add_pane(window, cx);
 3726                if self
 3727                    .center
 3728                    .split(&self.active_pane, &new_pane, action.direction)
 3729                    .log_err()
 3730                    .is_none()
 3731                {
 3732                    return;
 3733                };
 3734                new_pane
 3735            }
 3736        };
 3737
 3738        if action.clone {
 3739            clone_active_item(
 3740                self.database_id(),
 3741                &self.active_pane,
 3742                &destination,
 3743                action.focus,
 3744                window,
 3745                cx,
 3746            )
 3747        } else {
 3748            move_active_item(
 3749                &self.active_pane,
 3750                &destination,
 3751                action.focus,
 3752                true,
 3753                window,
 3754                cx,
 3755            );
 3756        }
 3757    }
 3758
 3759    pub fn bounding_box_for_pane(&self, pane: &Entity<Pane>) -> Option<Bounds<Pixels>> {
 3760        self.center.bounding_box_for_pane(pane)
 3761    }
 3762
 3763    pub fn find_pane_in_direction(
 3764        &mut self,
 3765        direction: SplitDirection,
 3766        cx: &App,
 3767    ) -> Option<Entity<Pane>> {
 3768        self.center
 3769            .find_pane_in_direction(&self.active_pane, direction, cx)
 3770            .cloned()
 3771    }
 3772
 3773    pub fn swap_pane_in_direction(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 3774        if let Some(to) = self.find_pane_in_direction(direction, cx) {
 3775            self.center.swap(&self.active_pane, &to);
 3776            cx.notify();
 3777        }
 3778    }
 3779
 3780    pub fn resize_pane(
 3781        &mut self,
 3782        axis: gpui::Axis,
 3783        amount: Pixels,
 3784        window: &mut Window,
 3785        cx: &mut Context<Self>,
 3786    ) {
 3787        let docks = self.all_docks();
 3788        let active_dock = docks
 3789            .into_iter()
 3790            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 3791
 3792        if let Some(dock) = active_dock {
 3793            let Some(panel_size) = dock.read(cx).active_panel_size(window, cx) else {
 3794                return;
 3795            };
 3796            match dock.read(cx).position() {
 3797                DockPosition::Left => self.resize_left_dock(panel_size + amount, window, cx),
 3798                DockPosition::Bottom => self.resize_bottom_dock(panel_size + amount, window, cx),
 3799                DockPosition::Right => self.resize_right_dock(panel_size + amount, window, cx),
 3800            }
 3801        } else {
 3802            self.center
 3803                .resize(&self.active_pane, axis, amount, &self.bounds);
 3804        }
 3805        cx.notify();
 3806    }
 3807
 3808    pub fn reset_pane_sizes(&mut self, cx: &mut Context<Self>) {
 3809        self.center.reset_pane_sizes();
 3810        cx.notify();
 3811    }
 3812
 3813    fn handle_pane_focused(
 3814        &mut self,
 3815        pane: Entity<Pane>,
 3816        window: &mut Window,
 3817        cx: &mut Context<Self>,
 3818    ) {
 3819        // This is explicitly hoisted out of the following check for pane identity as
 3820        // terminal panel panes are not registered as a center panes.
 3821        self.status_bar.update(cx, |status_bar, cx| {
 3822            status_bar.set_active_pane(&pane, window, cx);
 3823        });
 3824        if self.active_pane != pane {
 3825            self.set_active_pane(&pane, window, cx);
 3826        }
 3827
 3828        if self.last_active_center_pane.is_none() {
 3829            self.last_active_center_pane = Some(pane.downgrade());
 3830        }
 3831
 3832        self.dismiss_zoomed_items_to_reveal(None, window, cx);
 3833        if pane.read(cx).is_zoomed() {
 3834            self.zoomed = Some(pane.downgrade().into());
 3835        } else {
 3836            self.zoomed = None;
 3837        }
 3838        self.zoomed_position = None;
 3839        cx.emit(Event::ZoomChanged);
 3840        self.update_active_view_for_followers(window, cx);
 3841        pane.update(cx, |pane, _| {
 3842            pane.track_alternate_file_items();
 3843        });
 3844
 3845        cx.notify();
 3846    }
 3847
 3848    fn set_active_pane(
 3849        &mut self,
 3850        pane: &Entity<Pane>,
 3851        window: &mut Window,
 3852        cx: &mut Context<Self>,
 3853    ) {
 3854        self.active_pane = pane.clone();
 3855        self.active_item_path_changed(window, cx);
 3856        self.last_active_center_pane = Some(pane.downgrade());
 3857    }
 3858
 3859    fn handle_panel_focused(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3860        self.update_active_view_for_followers(window, cx);
 3861    }
 3862
 3863    fn handle_pane_event(
 3864        &mut self,
 3865        pane: &Entity<Pane>,
 3866        event: &pane::Event,
 3867        window: &mut Window,
 3868        cx: &mut Context<Self>,
 3869    ) {
 3870        let mut serialize_workspace = true;
 3871        match event {
 3872            pane::Event::AddItem { item } => {
 3873                item.added_to_pane(self, pane.clone(), window, cx);
 3874                cx.emit(Event::ItemAdded {
 3875                    item: item.boxed_clone(),
 3876                });
 3877            }
 3878            pane::Event::Split(direction) => {
 3879                self.split_and_clone(pane.clone(), *direction, window, cx);
 3880            }
 3881            pane::Event::JoinIntoNext => {
 3882                self.join_pane_into_next(pane.clone(), window, cx);
 3883            }
 3884            pane::Event::JoinAll => {
 3885                self.join_all_panes(window, cx);
 3886            }
 3887            pane::Event::Remove { focus_on_pane } => {
 3888                self.remove_pane(pane.clone(), focus_on_pane.clone(), window, cx);
 3889            }
 3890            pane::Event::ActivateItem {
 3891                local,
 3892                focus_changed,
 3893            } => {
 3894                window.invalidate_character_coordinates();
 3895
 3896                pane.update(cx, |pane, _| {
 3897                    pane.track_alternate_file_items();
 3898                });
 3899                if *local {
 3900                    self.unfollow_in_pane(pane, window, cx);
 3901                }
 3902                serialize_workspace = *focus_changed || pane != self.active_pane();
 3903                if pane == self.active_pane() {
 3904                    self.active_item_path_changed(window, cx);
 3905                    self.update_active_view_for_followers(window, cx);
 3906                } else if *local {
 3907                    self.set_active_pane(pane, window, cx);
 3908                }
 3909            }
 3910            pane::Event::UserSavedItem { item, save_intent } => {
 3911                cx.emit(Event::UserSavedItem {
 3912                    pane: pane.downgrade(),
 3913                    item: item.boxed_clone(),
 3914                    save_intent: *save_intent,
 3915                });
 3916                serialize_workspace = false;
 3917            }
 3918            pane::Event::ChangeItemTitle => {
 3919                if *pane == self.active_pane {
 3920                    self.active_item_path_changed(window, cx);
 3921                }
 3922                serialize_workspace = false;
 3923            }
 3924            pane::Event::RemoveItem { .. } => {}
 3925            pane::Event::RemovedItem { item } => {
 3926                cx.emit(Event::ActiveItemChanged);
 3927                self.update_window_edited(window, cx);
 3928                if let hash_map::Entry::Occupied(entry) = self.panes_by_item.entry(item.item_id())
 3929                    && entry.get().entity_id() == pane.entity_id()
 3930                {
 3931                    entry.remove();
 3932                }
 3933            }
 3934            pane::Event::Focus => {
 3935                window.invalidate_character_coordinates();
 3936                self.handle_pane_focused(pane.clone(), window, cx);
 3937            }
 3938            pane::Event::ZoomIn => {
 3939                if *pane == self.active_pane {
 3940                    pane.update(cx, |pane, cx| pane.set_zoomed(true, cx));
 3941                    if pane.read(cx).has_focus(window, cx) {
 3942                        self.zoomed = Some(pane.downgrade().into());
 3943                        self.zoomed_position = None;
 3944                        cx.emit(Event::ZoomChanged);
 3945                    }
 3946                    cx.notify();
 3947                }
 3948            }
 3949            pane::Event::ZoomOut => {
 3950                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 3951                if self.zoomed_position.is_none() {
 3952                    self.zoomed = None;
 3953                    cx.emit(Event::ZoomChanged);
 3954                }
 3955                cx.notify();
 3956            }
 3957            pane::Event::ItemPinned | pane::Event::ItemUnpinned => {}
 3958        }
 3959
 3960        if serialize_workspace {
 3961            self.serialize_workspace(window, cx);
 3962        }
 3963    }
 3964
 3965    pub fn unfollow_in_pane(
 3966        &mut self,
 3967        pane: &Entity<Pane>,
 3968        window: &mut Window,
 3969        cx: &mut Context<Workspace>,
 3970    ) -> Option<CollaboratorId> {
 3971        let leader_id = self.leader_for_pane(pane)?;
 3972        self.unfollow(leader_id, window, cx);
 3973        Some(leader_id)
 3974    }
 3975
 3976    pub fn split_pane(
 3977        &mut self,
 3978        pane_to_split: Entity<Pane>,
 3979        split_direction: SplitDirection,
 3980        window: &mut Window,
 3981        cx: &mut Context<Self>,
 3982    ) -> Entity<Pane> {
 3983        let new_pane = self.add_pane(window, cx);
 3984        self.center
 3985            .split(&pane_to_split, &new_pane, split_direction)
 3986            .unwrap();
 3987        cx.notify();
 3988        new_pane
 3989    }
 3990
 3991    pub fn split_and_clone(
 3992        &mut self,
 3993        pane: Entity<Pane>,
 3994        direction: SplitDirection,
 3995        window: &mut Window,
 3996        cx: &mut Context<Self>,
 3997    ) -> Option<Entity<Pane>> {
 3998        let item = pane.read(cx).active_item()?;
 3999        let maybe_pane_handle =
 4000            if let Some(clone) = item.clone_on_split(self.database_id(), window, cx) {
 4001                let new_pane = self.add_pane(window, cx);
 4002                new_pane.update(cx, |pane, cx| {
 4003                    pane.add_item(clone, true, true, None, window, cx)
 4004                });
 4005                self.center.split(&pane, &new_pane, direction).unwrap();
 4006                Some(new_pane)
 4007            } else {
 4008                None
 4009            };
 4010        cx.notify();
 4011        maybe_pane_handle
 4012    }
 4013
 4014    pub fn split_pane_with_item(
 4015        &mut self,
 4016        pane_to_split: WeakEntity<Pane>,
 4017        split_direction: SplitDirection,
 4018        from: WeakEntity<Pane>,
 4019        item_id_to_move: EntityId,
 4020        window: &mut Window,
 4021        cx: &mut Context<Self>,
 4022    ) {
 4023        let Some(pane_to_split) = pane_to_split.upgrade() else {
 4024            return;
 4025        };
 4026        let Some(from) = from.upgrade() else {
 4027            return;
 4028        };
 4029
 4030        let new_pane = self.add_pane(window, cx);
 4031        move_item(&from, &new_pane, item_id_to_move, 0, true, window, cx);
 4032        self.center
 4033            .split(&pane_to_split, &new_pane, split_direction)
 4034            .unwrap();
 4035        cx.notify();
 4036    }
 4037
 4038    pub fn split_pane_with_project_entry(
 4039        &mut self,
 4040        pane_to_split: WeakEntity<Pane>,
 4041        split_direction: SplitDirection,
 4042        project_entry: ProjectEntryId,
 4043        window: &mut Window,
 4044        cx: &mut Context<Self>,
 4045    ) -> Option<Task<Result<()>>> {
 4046        let pane_to_split = pane_to_split.upgrade()?;
 4047        let new_pane = self.add_pane(window, cx);
 4048        self.center
 4049            .split(&pane_to_split, &new_pane, split_direction)
 4050            .unwrap();
 4051
 4052        let path = self.project.read(cx).path_for_entry(project_entry, cx)?;
 4053        let task = self.open_path(path, Some(new_pane.downgrade()), true, window, cx);
 4054        Some(cx.foreground_executor().spawn(async move {
 4055            task.await?;
 4056            Ok(())
 4057        }))
 4058    }
 4059
 4060    pub fn join_all_panes(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4061        let active_item = self.active_pane.read(cx).active_item();
 4062        for pane in &self.panes {
 4063            join_pane_into_active(&self.active_pane, pane, window, cx);
 4064        }
 4065        if let Some(active_item) = active_item {
 4066            self.activate_item(active_item.as_ref(), true, true, window, cx);
 4067        }
 4068        cx.notify();
 4069    }
 4070
 4071    pub fn join_pane_into_next(
 4072        &mut self,
 4073        pane: Entity<Pane>,
 4074        window: &mut Window,
 4075        cx: &mut Context<Self>,
 4076    ) {
 4077        let next_pane = self
 4078            .find_pane_in_direction(SplitDirection::Right, cx)
 4079            .or_else(|| self.find_pane_in_direction(SplitDirection::Down, cx))
 4080            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4081            .or_else(|| self.find_pane_in_direction(SplitDirection::Up, cx));
 4082        let Some(next_pane) = next_pane else {
 4083            return;
 4084        };
 4085        move_all_items(&pane, &next_pane, window, cx);
 4086        cx.notify();
 4087    }
 4088
 4089    fn remove_pane(
 4090        &mut self,
 4091        pane: Entity<Pane>,
 4092        focus_on: Option<Entity<Pane>>,
 4093        window: &mut Window,
 4094        cx: &mut Context<Self>,
 4095    ) {
 4096        if self.center.remove(&pane).unwrap() {
 4097            self.force_remove_pane(&pane, &focus_on, window, cx);
 4098            self.unfollow_in_pane(&pane, window, cx);
 4099            self.last_leaders_by_pane.remove(&pane.downgrade());
 4100            for removed_item in pane.read(cx).items() {
 4101                self.panes_by_item.remove(&removed_item.item_id());
 4102            }
 4103
 4104            cx.notify();
 4105        } else {
 4106            self.active_item_path_changed(window, cx);
 4107        }
 4108        cx.emit(Event::PaneRemoved);
 4109    }
 4110
 4111    pub fn panes(&self) -> &[Entity<Pane>] {
 4112        &self.panes
 4113    }
 4114
 4115    pub fn active_pane(&self) -> &Entity<Pane> {
 4116        &self.active_pane
 4117    }
 4118
 4119    pub fn focused_pane(&self, window: &Window, cx: &App) -> Entity<Pane> {
 4120        for dock in self.all_docks() {
 4121            if dock.focus_handle(cx).contains_focused(window, cx)
 4122                && let Some(pane) = dock
 4123                    .read(cx)
 4124                    .active_panel()
 4125                    .and_then(|panel| panel.pane(cx))
 4126            {
 4127                return pane;
 4128            }
 4129        }
 4130        self.active_pane().clone()
 4131    }
 4132
 4133    pub fn adjacent_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 4134        self.find_pane_in_direction(SplitDirection::Right, cx)
 4135            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4136            .unwrap_or_else(|| {
 4137                self.split_pane(self.active_pane.clone(), SplitDirection::Right, window, cx)
 4138            })
 4139    }
 4140
 4141    pub fn pane_for(&self, handle: &dyn ItemHandle) -> Option<Entity<Pane>> {
 4142        let weak_pane = self.panes_by_item.get(&handle.item_id())?;
 4143        weak_pane.upgrade()
 4144    }
 4145
 4146    fn collaborator_left(&mut self, peer_id: PeerId, window: &mut Window, cx: &mut Context<Self>) {
 4147        self.follower_states.retain(|leader_id, state| {
 4148            if *leader_id == CollaboratorId::PeerId(peer_id) {
 4149                for item in state.items_by_leader_view_id.values() {
 4150                    item.view.set_leader_id(None, window, cx);
 4151                }
 4152                false
 4153            } else {
 4154                true
 4155            }
 4156        });
 4157        cx.notify();
 4158    }
 4159
 4160    pub fn start_following(
 4161        &mut self,
 4162        leader_id: impl Into<CollaboratorId>,
 4163        window: &mut Window,
 4164        cx: &mut Context<Self>,
 4165    ) -> Option<Task<Result<()>>> {
 4166        let leader_id = leader_id.into();
 4167        let pane = self.active_pane().clone();
 4168
 4169        self.last_leaders_by_pane
 4170            .insert(pane.downgrade(), leader_id);
 4171        self.unfollow(leader_id, window, cx);
 4172        self.unfollow_in_pane(&pane, window, cx);
 4173        self.follower_states.insert(
 4174            leader_id,
 4175            FollowerState {
 4176                center_pane: pane.clone(),
 4177                dock_pane: None,
 4178                active_view_id: None,
 4179                items_by_leader_view_id: Default::default(),
 4180            },
 4181        );
 4182        cx.notify();
 4183
 4184        match leader_id {
 4185            CollaboratorId::PeerId(leader_peer_id) => {
 4186                let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4187                let project_id = self.project.read(cx).remote_id();
 4188                let request = self.app_state.client.request(proto::Follow {
 4189                    room_id,
 4190                    project_id,
 4191                    leader_id: Some(leader_peer_id),
 4192                });
 4193
 4194                Some(cx.spawn_in(window, async move |this, cx| {
 4195                    let response = request.await?;
 4196                    this.update(cx, |this, _| {
 4197                        let state = this
 4198                            .follower_states
 4199                            .get_mut(&leader_id)
 4200                            .context("following interrupted")?;
 4201                        state.active_view_id = response
 4202                            .active_view
 4203                            .as_ref()
 4204                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4205                        anyhow::Ok(())
 4206                    })??;
 4207                    if let Some(view) = response.active_view {
 4208                        Self::add_view_from_leader(this.clone(), leader_peer_id, &view, cx).await?;
 4209                    }
 4210                    this.update_in(cx, |this, window, cx| {
 4211                        this.leader_updated(leader_id, window, cx)
 4212                    })?;
 4213                    Ok(())
 4214                }))
 4215            }
 4216            CollaboratorId::Agent => {
 4217                self.leader_updated(leader_id, window, cx)?;
 4218                Some(Task::ready(Ok(())))
 4219            }
 4220        }
 4221    }
 4222
 4223    pub fn follow_next_collaborator(
 4224        &mut self,
 4225        _: &FollowNextCollaborator,
 4226        window: &mut Window,
 4227        cx: &mut Context<Self>,
 4228    ) {
 4229        let collaborators = self.project.read(cx).collaborators();
 4230        let next_leader_id = if let Some(leader_id) = self.leader_for_pane(&self.active_pane) {
 4231            let mut collaborators = collaborators.keys().copied();
 4232            for peer_id in collaborators.by_ref() {
 4233                if CollaboratorId::PeerId(peer_id) == leader_id {
 4234                    break;
 4235                }
 4236            }
 4237            collaborators.next().map(CollaboratorId::PeerId)
 4238        } else if let Some(last_leader_id) =
 4239            self.last_leaders_by_pane.get(&self.active_pane.downgrade())
 4240        {
 4241            match last_leader_id {
 4242                CollaboratorId::PeerId(peer_id) => {
 4243                    if collaborators.contains_key(peer_id) {
 4244                        Some(*last_leader_id)
 4245                    } else {
 4246                        None
 4247                    }
 4248                }
 4249                CollaboratorId::Agent => Some(CollaboratorId::Agent),
 4250            }
 4251        } else {
 4252            None
 4253        };
 4254
 4255        let pane = self.active_pane.clone();
 4256        let Some(leader_id) = next_leader_id.or_else(|| {
 4257            Some(CollaboratorId::PeerId(
 4258                collaborators.keys().copied().next()?,
 4259            ))
 4260        }) else {
 4261            return;
 4262        };
 4263        if self.unfollow_in_pane(&pane, window, cx) == Some(leader_id) {
 4264            return;
 4265        }
 4266        if let Some(task) = self.start_following(leader_id, window, cx) {
 4267            task.detach_and_log_err(cx)
 4268        }
 4269    }
 4270
 4271    pub fn follow(
 4272        &mut self,
 4273        leader_id: impl Into<CollaboratorId>,
 4274        window: &mut Window,
 4275        cx: &mut Context<Self>,
 4276    ) {
 4277        let leader_id = leader_id.into();
 4278
 4279        if let CollaboratorId::PeerId(peer_id) = leader_id {
 4280            let Some(room) = ActiveCall::global(cx).read(cx).room() else {
 4281                return;
 4282            };
 4283            let room = room.read(cx);
 4284            let Some(remote_participant) = room.remote_participant_for_peer_id(peer_id) else {
 4285                return;
 4286            };
 4287
 4288            let project = self.project.read(cx);
 4289
 4290            let other_project_id = match remote_participant.location {
 4291                call::ParticipantLocation::External => None,
 4292                call::ParticipantLocation::UnsharedProject => None,
 4293                call::ParticipantLocation::SharedProject { project_id } => {
 4294                    if Some(project_id) == project.remote_id() {
 4295                        None
 4296                    } else {
 4297                        Some(project_id)
 4298                    }
 4299                }
 4300            };
 4301
 4302            // if they are active in another project, follow there.
 4303            if let Some(project_id) = other_project_id {
 4304                let app_state = self.app_state.clone();
 4305                crate::join_in_room_project(project_id, remote_participant.user.id, app_state, cx)
 4306                    .detach_and_log_err(cx);
 4307            }
 4308        }
 4309
 4310        // if you're already following, find the right pane and focus it.
 4311        if let Some(follower_state) = self.follower_states.get(&leader_id) {
 4312            window.focus(&follower_state.pane().focus_handle(cx));
 4313
 4314            return;
 4315        }
 4316
 4317        // Otherwise, follow.
 4318        if let Some(task) = self.start_following(leader_id, window, cx) {
 4319            task.detach_and_log_err(cx)
 4320        }
 4321    }
 4322
 4323    pub fn unfollow(
 4324        &mut self,
 4325        leader_id: impl Into<CollaboratorId>,
 4326        window: &mut Window,
 4327        cx: &mut Context<Self>,
 4328    ) -> Option<()> {
 4329        cx.notify();
 4330
 4331        let leader_id = leader_id.into();
 4332        let state = self.follower_states.remove(&leader_id)?;
 4333        for (_, item) in state.items_by_leader_view_id {
 4334            item.view.set_leader_id(None, window, cx);
 4335        }
 4336
 4337        if let CollaboratorId::PeerId(leader_peer_id) = leader_id {
 4338            let project_id = self.project.read(cx).remote_id();
 4339            let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4340            self.app_state
 4341                .client
 4342                .send(proto::Unfollow {
 4343                    room_id,
 4344                    project_id,
 4345                    leader_id: Some(leader_peer_id),
 4346                })
 4347                .log_err();
 4348        }
 4349
 4350        Some(())
 4351    }
 4352
 4353    pub fn is_being_followed(&self, id: impl Into<CollaboratorId>) -> bool {
 4354        self.follower_states.contains_key(&id.into())
 4355    }
 4356
 4357    fn active_item_path_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4358        cx.emit(Event::ActiveItemChanged);
 4359        let active_entry = self.active_project_path(cx);
 4360        self.project
 4361            .update(cx, |project, cx| project.set_active_path(active_entry, cx));
 4362
 4363        self.update_window_title(window, cx);
 4364    }
 4365
 4366    fn update_window_title(&mut self, window: &mut Window, cx: &mut App) {
 4367        let project = self.project().read(cx);
 4368        let mut title = String::new();
 4369
 4370        for (i, name) in project.worktree_root_names(cx).enumerate() {
 4371            if i > 0 {
 4372                title.push_str(", ");
 4373            }
 4374            title.push_str(name);
 4375        }
 4376
 4377        if title.is_empty() {
 4378            title = "empty project".to_string();
 4379        }
 4380
 4381        if let Some(path) = self.active_item(cx).and_then(|item| item.project_path(cx)) {
 4382            let filename = path
 4383                .path
 4384                .file_name()
 4385                .map(|s| s.to_string_lossy())
 4386                .or_else(|| {
 4387                    Some(Cow::Borrowed(
 4388                        project
 4389                            .worktree_for_id(path.worktree_id, cx)?
 4390                            .read(cx)
 4391                            .root_name(),
 4392                    ))
 4393                });
 4394
 4395            if let Some(filename) = filename {
 4396                title.push_str("");
 4397                title.push_str(filename.as_ref());
 4398            }
 4399        }
 4400
 4401        if project.is_via_collab() {
 4402            title.push_str("");
 4403        } else if project.is_shared() {
 4404            title.push_str("");
 4405        }
 4406
 4407        if let Some(last_title) = self.last_window_title.as_ref()
 4408            && &title == last_title
 4409        {
 4410            return;
 4411        }
 4412        window.set_window_title(&title);
 4413        self.last_window_title = Some(title);
 4414    }
 4415
 4416    fn update_window_edited(&mut self, window: &mut Window, cx: &mut App) {
 4417        let is_edited = !self.project.read(cx).is_disconnected(cx) && !self.dirty_items.is_empty();
 4418        if is_edited != self.window_edited {
 4419            self.window_edited = is_edited;
 4420            window.set_window_edited(self.window_edited)
 4421        }
 4422    }
 4423
 4424    fn update_item_dirty_state(
 4425        &mut self,
 4426        item: &dyn ItemHandle,
 4427        window: &mut Window,
 4428        cx: &mut App,
 4429    ) {
 4430        let is_dirty = item.is_dirty(cx);
 4431        let item_id = item.item_id();
 4432        let was_dirty = self.dirty_items.contains_key(&item_id);
 4433        if is_dirty == was_dirty {
 4434            return;
 4435        }
 4436        if was_dirty {
 4437            self.dirty_items.remove(&item_id);
 4438            self.update_window_edited(window, cx);
 4439            return;
 4440        }
 4441        if let Some(window_handle) = window.window_handle().downcast::<Self>() {
 4442            let s = item.on_release(
 4443                cx,
 4444                Box::new(move |cx| {
 4445                    window_handle
 4446                        .update(cx, |this, window, cx| {
 4447                            this.dirty_items.remove(&item_id);
 4448                            this.update_window_edited(window, cx)
 4449                        })
 4450                        .ok();
 4451                }),
 4452            );
 4453            self.dirty_items.insert(item_id, s);
 4454            self.update_window_edited(window, cx);
 4455        }
 4456    }
 4457
 4458    fn render_notifications(&self, _window: &mut Window, _cx: &mut Context<Self>) -> Option<Div> {
 4459        if self.notifications.is_empty() {
 4460            None
 4461        } else {
 4462            Some(
 4463                div()
 4464                    .absolute()
 4465                    .right_3()
 4466                    .bottom_3()
 4467                    .w_112()
 4468                    .h_full()
 4469                    .flex()
 4470                    .flex_col()
 4471                    .justify_end()
 4472                    .gap_2()
 4473                    .children(
 4474                        self.notifications
 4475                            .iter()
 4476                            .map(|(_, notification)| notification.clone().into_any()),
 4477                    ),
 4478            )
 4479        }
 4480    }
 4481
 4482    // RPC handlers
 4483
 4484    fn active_view_for_follower(
 4485        &self,
 4486        follower_project_id: Option<u64>,
 4487        window: &mut Window,
 4488        cx: &mut Context<Self>,
 4489    ) -> Option<proto::View> {
 4490        let (item, panel_id) = self.active_item_for_followers(window, cx);
 4491        let item = item?;
 4492        let leader_id = self
 4493            .pane_for(&*item)
 4494            .and_then(|pane| self.leader_for_pane(&pane));
 4495        let leader_peer_id = match leader_id {
 4496            Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4497            Some(CollaboratorId::Agent) | None => None,
 4498        };
 4499
 4500        let item_handle = item.to_followable_item_handle(cx)?;
 4501        let id = item_handle.remote_id(&self.app_state.client, window, cx)?;
 4502        let variant = item_handle.to_state_proto(window, cx)?;
 4503
 4504        if item_handle.is_project_item(window, cx)
 4505            && (follower_project_id.is_none()
 4506                || follower_project_id != self.project.read(cx).remote_id())
 4507        {
 4508            return None;
 4509        }
 4510
 4511        Some(proto::View {
 4512            id: id.to_proto(),
 4513            leader_id: leader_peer_id,
 4514            variant: Some(variant),
 4515            panel_id: panel_id.map(|id| id as i32),
 4516        })
 4517    }
 4518
 4519    fn handle_follow(
 4520        &mut self,
 4521        follower_project_id: Option<u64>,
 4522        window: &mut Window,
 4523        cx: &mut Context<Self>,
 4524    ) -> proto::FollowResponse {
 4525        let active_view = self.active_view_for_follower(follower_project_id, window, cx);
 4526
 4527        cx.notify();
 4528        proto::FollowResponse {
 4529            // TODO: Remove after version 0.145.x stabilizes.
 4530            active_view_id: active_view.as_ref().and_then(|view| view.id.clone()),
 4531            views: active_view.iter().cloned().collect(),
 4532            active_view,
 4533        }
 4534    }
 4535
 4536    fn handle_update_followers(
 4537        &mut self,
 4538        leader_id: PeerId,
 4539        message: proto::UpdateFollowers,
 4540        _window: &mut Window,
 4541        _cx: &mut Context<Self>,
 4542    ) {
 4543        self.leader_updates_tx
 4544            .unbounded_send((leader_id, message))
 4545            .ok();
 4546    }
 4547
 4548    async fn process_leader_update(
 4549        this: &WeakEntity<Self>,
 4550        leader_id: PeerId,
 4551        update: proto::UpdateFollowers,
 4552        cx: &mut AsyncWindowContext,
 4553    ) -> Result<()> {
 4554        match update.variant.context("invalid update")? {
 4555            proto::update_followers::Variant::CreateView(view) => {
 4556                let view_id = ViewId::from_proto(view.id.clone().context("invalid view id")?)?;
 4557                let should_add_view = this.update(cx, |this, _| {
 4558                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4559                        anyhow::Ok(!state.items_by_leader_view_id.contains_key(&view_id))
 4560                    } else {
 4561                        anyhow::Ok(false)
 4562                    }
 4563                })??;
 4564
 4565                if should_add_view {
 4566                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4567                }
 4568            }
 4569            proto::update_followers::Variant::UpdateActiveView(update_active_view) => {
 4570                let should_add_view = this.update(cx, |this, _| {
 4571                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4572                        state.active_view_id = update_active_view
 4573                            .view
 4574                            .as_ref()
 4575                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4576
 4577                        if state.active_view_id.is_some_and(|view_id| {
 4578                            !state.items_by_leader_view_id.contains_key(&view_id)
 4579                        }) {
 4580                            anyhow::Ok(true)
 4581                        } else {
 4582                            anyhow::Ok(false)
 4583                        }
 4584                    } else {
 4585                        anyhow::Ok(false)
 4586                    }
 4587                })??;
 4588
 4589                if should_add_view && let Some(view) = update_active_view.view {
 4590                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4591                }
 4592            }
 4593            proto::update_followers::Variant::UpdateView(update_view) => {
 4594                let variant = update_view.variant.context("missing update view variant")?;
 4595                let id = update_view.id.context("missing update view id")?;
 4596                let mut tasks = Vec::new();
 4597                this.update_in(cx, |this, window, cx| {
 4598                    let project = this.project.clone();
 4599                    if let Some(state) = this.follower_states.get(&leader_id.into()) {
 4600                        let view_id = ViewId::from_proto(id.clone())?;
 4601                        if let Some(item) = state.items_by_leader_view_id.get(&view_id) {
 4602                            tasks.push(item.view.apply_update_proto(
 4603                                &project,
 4604                                variant.clone(),
 4605                                window,
 4606                                cx,
 4607                            ));
 4608                        }
 4609                    }
 4610                    anyhow::Ok(())
 4611                })??;
 4612                try_join_all(tasks).await.log_err();
 4613            }
 4614        }
 4615        this.update_in(cx, |this, window, cx| {
 4616            this.leader_updated(leader_id, window, cx)
 4617        })?;
 4618        Ok(())
 4619    }
 4620
 4621    async fn add_view_from_leader(
 4622        this: WeakEntity<Self>,
 4623        leader_id: PeerId,
 4624        view: &proto::View,
 4625        cx: &mut AsyncWindowContext,
 4626    ) -> Result<()> {
 4627        let this = this.upgrade().context("workspace dropped")?;
 4628
 4629        let Some(id) = view.id.clone() else {
 4630            anyhow::bail!("no id for view");
 4631        };
 4632        let id = ViewId::from_proto(id)?;
 4633        let panel_id = view.panel_id.and_then(proto::PanelId::from_i32);
 4634
 4635        let pane = this.update(cx, |this, _cx| {
 4636            let state = this
 4637                .follower_states
 4638                .get(&leader_id.into())
 4639                .context("stopped following")?;
 4640            anyhow::Ok(state.pane().clone())
 4641        })??;
 4642        let existing_item = pane.update_in(cx, |pane, window, cx| {
 4643            let client = this.read(cx).client().clone();
 4644            pane.items().find_map(|item| {
 4645                let item = item.to_followable_item_handle(cx)?;
 4646                if item.remote_id(&client, window, cx) == Some(id) {
 4647                    Some(item)
 4648                } else {
 4649                    None
 4650                }
 4651            })
 4652        })?;
 4653        let item = if let Some(existing_item) = existing_item {
 4654            existing_item
 4655        } else {
 4656            let variant = view.variant.clone();
 4657            anyhow::ensure!(variant.is_some(), "missing view variant");
 4658
 4659            let task = cx.update(|window, cx| {
 4660                FollowableViewRegistry::from_state_proto(this.clone(), id, variant, window, cx)
 4661            })?;
 4662
 4663            let Some(task) = task else {
 4664                anyhow::bail!(
 4665                    "failed to construct view from leader (maybe from a different version of zed?)"
 4666                );
 4667            };
 4668
 4669            let mut new_item = task.await?;
 4670            pane.update_in(cx, |pane, window, cx| {
 4671                let mut item_to_remove = None;
 4672                for (ix, item) in pane.items().enumerate() {
 4673                    if let Some(item) = item.to_followable_item_handle(cx) {
 4674                        match new_item.dedup(item.as_ref(), window, cx) {
 4675                            Some(item::Dedup::KeepExisting) => {
 4676                                new_item =
 4677                                    item.boxed_clone().to_followable_item_handle(cx).unwrap();
 4678                                break;
 4679                            }
 4680                            Some(item::Dedup::ReplaceExisting) => {
 4681                                item_to_remove = Some((ix, item.item_id()));
 4682                                break;
 4683                            }
 4684                            None => {}
 4685                        }
 4686                    }
 4687                }
 4688
 4689                if let Some((ix, id)) = item_to_remove {
 4690                    pane.remove_item(id, false, false, window, cx);
 4691                    pane.add_item(new_item.boxed_clone(), false, false, Some(ix), window, cx);
 4692                }
 4693            })?;
 4694
 4695            new_item
 4696        };
 4697
 4698        this.update_in(cx, |this, window, cx| {
 4699            let state = this.follower_states.get_mut(&leader_id.into())?;
 4700            item.set_leader_id(Some(leader_id.into()), window, cx);
 4701            state.items_by_leader_view_id.insert(
 4702                id,
 4703                FollowerView {
 4704                    view: item,
 4705                    location: panel_id,
 4706                },
 4707            );
 4708
 4709            Some(())
 4710        })?;
 4711
 4712        Ok(())
 4713    }
 4714
 4715    fn handle_agent_location_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4716        let Some(follower_state) = self.follower_states.get_mut(&CollaboratorId::Agent) else {
 4717            return;
 4718        };
 4719
 4720        if let Some(agent_location) = self.project.read(cx).agent_location() {
 4721            let buffer_entity_id = agent_location.buffer.entity_id();
 4722            let view_id = ViewId {
 4723                creator: CollaboratorId::Agent,
 4724                id: buffer_entity_id.as_u64(),
 4725            };
 4726            follower_state.active_view_id = Some(view_id);
 4727
 4728            let item = match follower_state.items_by_leader_view_id.entry(view_id) {
 4729                hash_map::Entry::Occupied(entry) => Some(entry.into_mut()),
 4730                hash_map::Entry::Vacant(entry) => {
 4731                    let existing_view =
 4732                        follower_state
 4733                            .center_pane
 4734                            .read(cx)
 4735                            .items()
 4736                            .find_map(|item| {
 4737                                let item = item.to_followable_item_handle(cx)?;
 4738                                if item.is_singleton(cx)
 4739                                    && item.project_item_model_ids(cx).as_slice()
 4740                                        == [buffer_entity_id]
 4741                                {
 4742                                    Some(item)
 4743                                } else {
 4744                                    None
 4745                                }
 4746                            });
 4747                    let view = existing_view.or_else(|| {
 4748                        agent_location.buffer.upgrade().and_then(|buffer| {
 4749                            cx.update_default_global(|registry: &mut ProjectItemRegistry, cx| {
 4750                                registry.build_item(buffer, self.project.clone(), None, window, cx)
 4751                            })?
 4752                            .to_followable_item_handle(cx)
 4753                        })
 4754                    });
 4755
 4756                    view.map(|view| {
 4757                        entry.insert(FollowerView {
 4758                            view,
 4759                            location: None,
 4760                        })
 4761                    })
 4762                }
 4763            };
 4764
 4765            if let Some(item) = item {
 4766                item.view
 4767                    .set_leader_id(Some(CollaboratorId::Agent), window, cx);
 4768                item.view
 4769                    .update_agent_location(agent_location.position, window, cx);
 4770            }
 4771        } else {
 4772            follower_state.active_view_id = None;
 4773        }
 4774
 4775        self.leader_updated(CollaboratorId::Agent, window, cx);
 4776    }
 4777
 4778    pub fn update_active_view_for_followers(&mut self, window: &mut Window, cx: &mut App) {
 4779        let mut is_project_item = true;
 4780        let mut update = proto::UpdateActiveView::default();
 4781        if window.is_window_active() {
 4782            let (active_item, panel_id) = self.active_item_for_followers(window, cx);
 4783
 4784            if let Some(item) = active_item
 4785                && item.item_focus_handle(cx).contains_focused(window, cx)
 4786            {
 4787                let leader_id = self
 4788                    .pane_for(&*item)
 4789                    .and_then(|pane| self.leader_for_pane(&pane));
 4790                let leader_peer_id = match leader_id {
 4791                    Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4792                    Some(CollaboratorId::Agent) | None => None,
 4793                };
 4794
 4795                if let Some(item) = item.to_followable_item_handle(cx) {
 4796                    let id = item
 4797                        .remote_id(&self.app_state.client, window, cx)
 4798                        .map(|id| id.to_proto());
 4799
 4800                    if let Some(id) = id
 4801                        && let Some(variant) = item.to_state_proto(window, cx)
 4802                    {
 4803                        let view = Some(proto::View {
 4804                            id: id.clone(),
 4805                            leader_id: leader_peer_id,
 4806                            variant: Some(variant),
 4807                            panel_id: panel_id.map(|id| id as i32),
 4808                        });
 4809
 4810                        is_project_item = item.is_project_item(window, cx);
 4811                        update = proto::UpdateActiveView {
 4812                            view,
 4813                            // TODO: Remove after version 0.145.x stabilizes.
 4814                            id,
 4815                            leader_id: leader_peer_id,
 4816                        };
 4817                    };
 4818                }
 4819            }
 4820        }
 4821
 4822        let active_view_id = update.view.as_ref().and_then(|view| view.id.as_ref());
 4823        if active_view_id != self.last_active_view_id.as_ref() {
 4824            self.last_active_view_id = active_view_id.cloned();
 4825            self.update_followers(
 4826                is_project_item,
 4827                proto::update_followers::Variant::UpdateActiveView(update),
 4828                window,
 4829                cx,
 4830            );
 4831        }
 4832    }
 4833
 4834    fn active_item_for_followers(
 4835        &self,
 4836        window: &mut Window,
 4837        cx: &mut App,
 4838    ) -> (Option<Box<dyn ItemHandle>>, Option<proto::PanelId>) {
 4839        let mut active_item = None;
 4840        let mut panel_id = None;
 4841        for dock in self.all_docks() {
 4842            if dock.focus_handle(cx).contains_focused(window, cx)
 4843                && let Some(panel) = dock.read(cx).active_panel()
 4844                && let Some(pane) = panel.pane(cx)
 4845                && let Some(item) = pane.read(cx).active_item()
 4846            {
 4847                active_item = Some(item);
 4848                panel_id = panel.remote_id();
 4849                break;
 4850            }
 4851        }
 4852
 4853        if active_item.is_none() {
 4854            active_item = self.active_pane().read(cx).active_item();
 4855        }
 4856        (active_item, panel_id)
 4857    }
 4858
 4859    fn update_followers(
 4860        &self,
 4861        project_only: bool,
 4862        update: proto::update_followers::Variant,
 4863        _: &mut Window,
 4864        cx: &mut App,
 4865    ) -> Option<()> {
 4866        // If this update only applies to for followers in the current project,
 4867        // then skip it unless this project is shared. If it applies to all
 4868        // followers, regardless of project, then set `project_id` to none,
 4869        // indicating that it goes to all followers.
 4870        let project_id = if project_only {
 4871            Some(self.project.read(cx).remote_id()?)
 4872        } else {
 4873            None
 4874        };
 4875        self.app_state().workspace_store.update(cx, |store, cx| {
 4876            store.update_followers(project_id, update, cx)
 4877        })
 4878    }
 4879
 4880    pub fn leader_for_pane(&self, pane: &Entity<Pane>) -> Option<CollaboratorId> {
 4881        self.follower_states.iter().find_map(|(leader_id, state)| {
 4882            if state.center_pane == *pane || state.dock_pane.as_ref() == Some(pane) {
 4883                Some(*leader_id)
 4884            } else {
 4885                None
 4886            }
 4887        })
 4888    }
 4889
 4890    fn leader_updated(
 4891        &mut self,
 4892        leader_id: impl Into<CollaboratorId>,
 4893        window: &mut Window,
 4894        cx: &mut Context<Self>,
 4895    ) -> Option<Box<dyn ItemHandle>> {
 4896        cx.notify();
 4897
 4898        let leader_id = leader_id.into();
 4899        let (panel_id, item) = match leader_id {
 4900            CollaboratorId::PeerId(peer_id) => self.active_item_for_peer(peer_id, window, cx)?,
 4901            CollaboratorId::Agent => (None, self.active_item_for_agent()?),
 4902        };
 4903
 4904        let state = self.follower_states.get(&leader_id)?;
 4905        let mut transfer_focus = state.center_pane.read(cx).has_focus(window, cx);
 4906        let pane;
 4907        if let Some(panel_id) = panel_id {
 4908            pane = self
 4909                .activate_panel_for_proto_id(panel_id, window, cx)?
 4910                .pane(cx)?;
 4911            let state = self.follower_states.get_mut(&leader_id)?;
 4912            state.dock_pane = Some(pane.clone());
 4913        } else {
 4914            pane = state.center_pane.clone();
 4915            let state = self.follower_states.get_mut(&leader_id)?;
 4916            if let Some(dock_pane) = state.dock_pane.take() {
 4917                transfer_focus |= dock_pane.focus_handle(cx).contains_focused(window, cx);
 4918            }
 4919        }
 4920
 4921        pane.update(cx, |pane, cx| {
 4922            let focus_active_item = pane.has_focus(window, cx) || transfer_focus;
 4923            if let Some(index) = pane.index_for_item(item.as_ref()) {
 4924                pane.activate_item(index, false, false, window, cx);
 4925            } else {
 4926                pane.add_item(item.boxed_clone(), false, false, None, window, cx)
 4927            }
 4928
 4929            if focus_active_item {
 4930                pane.focus_active_item(window, cx)
 4931            }
 4932        });
 4933
 4934        Some(item)
 4935    }
 4936
 4937    fn active_item_for_agent(&self) -> Option<Box<dyn ItemHandle>> {
 4938        let state = self.follower_states.get(&CollaboratorId::Agent)?;
 4939        let active_view_id = state.active_view_id?;
 4940        Some(
 4941            state
 4942                .items_by_leader_view_id
 4943                .get(&active_view_id)?
 4944                .view
 4945                .boxed_clone(),
 4946        )
 4947    }
 4948
 4949    fn active_item_for_peer(
 4950        &self,
 4951        peer_id: PeerId,
 4952        window: &mut Window,
 4953        cx: &mut Context<Self>,
 4954    ) -> Option<(Option<PanelId>, Box<dyn ItemHandle>)> {
 4955        let call = self.active_call()?;
 4956        let room = call.read(cx).room()?.read(cx);
 4957        let participant = room.remote_participant_for_peer_id(peer_id)?;
 4958        let leader_in_this_app;
 4959        let leader_in_this_project;
 4960        match participant.location {
 4961            call::ParticipantLocation::SharedProject { project_id } => {
 4962                leader_in_this_app = true;
 4963                leader_in_this_project = Some(project_id) == self.project.read(cx).remote_id();
 4964            }
 4965            call::ParticipantLocation::UnsharedProject => {
 4966                leader_in_this_app = true;
 4967                leader_in_this_project = false;
 4968            }
 4969            call::ParticipantLocation::External => {
 4970                leader_in_this_app = false;
 4971                leader_in_this_project = false;
 4972            }
 4973        };
 4974        let state = self.follower_states.get(&peer_id.into())?;
 4975        let mut item_to_activate = None;
 4976        if let (Some(active_view_id), true) = (state.active_view_id, leader_in_this_app) {
 4977            if let Some(item) = state.items_by_leader_view_id.get(&active_view_id)
 4978                && (leader_in_this_project || !item.view.is_project_item(window, cx))
 4979            {
 4980                item_to_activate = Some((item.location, item.view.boxed_clone()));
 4981            }
 4982        } else if let Some(shared_screen) =
 4983            self.shared_screen_for_peer(peer_id, &state.center_pane, window, cx)
 4984        {
 4985            item_to_activate = Some((None, Box::new(shared_screen)));
 4986        }
 4987        item_to_activate
 4988    }
 4989
 4990    fn shared_screen_for_peer(
 4991        &self,
 4992        peer_id: PeerId,
 4993        pane: &Entity<Pane>,
 4994        window: &mut Window,
 4995        cx: &mut App,
 4996    ) -> Option<Entity<SharedScreen>> {
 4997        let call = self.active_call()?;
 4998        let room = call.read(cx).room()?.clone();
 4999        let participant = room.read(cx).remote_participant_for_peer_id(peer_id)?;
 5000        let track = participant.video_tracks.values().next()?.clone();
 5001        let user = participant.user.clone();
 5002
 5003        for item in pane.read(cx).items_of_type::<SharedScreen>() {
 5004            if item.read(cx).peer_id == peer_id {
 5005                return Some(item);
 5006            }
 5007        }
 5008
 5009        Some(cx.new(|cx| SharedScreen::new(track, peer_id, user.clone(), room.clone(), window, cx)))
 5010    }
 5011
 5012    pub fn on_window_activation_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5013        if window.is_window_active() {
 5014            self.update_active_view_for_followers(window, cx);
 5015
 5016            if let Some(database_id) = self.database_id {
 5017                cx.background_spawn(persistence::DB.update_timestamp(database_id))
 5018                    .detach();
 5019            }
 5020        } else {
 5021            for pane in &self.panes {
 5022                pane.update(cx, |pane, cx| {
 5023                    if let Some(item) = pane.active_item() {
 5024                        item.workspace_deactivated(window, cx);
 5025                    }
 5026                    for item in pane.items() {
 5027                        if matches!(
 5028                            item.workspace_settings(cx).autosave,
 5029                            AutosaveSetting::OnWindowChange | AutosaveSetting::OnFocusChange
 5030                        ) {
 5031                            Pane::autosave_item(item.as_ref(), self.project.clone(), window, cx)
 5032                                .detach_and_log_err(cx);
 5033                        }
 5034                    }
 5035                });
 5036            }
 5037        }
 5038    }
 5039
 5040    pub fn active_call(&self) -> Option<&Entity<ActiveCall>> {
 5041        self.active_call.as_ref().map(|(call, _)| call)
 5042    }
 5043
 5044    fn on_active_call_event(
 5045        &mut self,
 5046        _: &Entity<ActiveCall>,
 5047        event: &call::room::Event,
 5048        window: &mut Window,
 5049        cx: &mut Context<Self>,
 5050    ) {
 5051        match event {
 5052            call::room::Event::ParticipantLocationChanged { participant_id }
 5053            | call::room::Event::RemoteVideoTracksChanged { participant_id } => {
 5054                self.leader_updated(participant_id, window, cx);
 5055            }
 5056            _ => {}
 5057        }
 5058    }
 5059
 5060    pub fn database_id(&self) -> Option<WorkspaceId> {
 5061        self.database_id
 5062    }
 5063
 5064    pub fn session_id(&self) -> Option<String> {
 5065        self.session_id.clone()
 5066    }
 5067
 5068    pub fn root_paths(&self, cx: &App) -> Vec<Arc<Path>> {
 5069        let project = self.project().read(cx);
 5070        project
 5071            .visible_worktrees(cx)
 5072            .map(|worktree| worktree.read(cx).abs_path())
 5073            .collect::<Vec<_>>()
 5074    }
 5075
 5076    fn remove_panes(&mut self, member: Member, window: &mut Window, cx: &mut Context<Workspace>) {
 5077        match member {
 5078            Member::Axis(PaneAxis { members, .. }) => {
 5079                for child in members.iter() {
 5080                    self.remove_panes(child.clone(), window, cx)
 5081                }
 5082            }
 5083            Member::Pane(pane) => {
 5084                self.force_remove_pane(&pane, &None, window, cx);
 5085            }
 5086        }
 5087    }
 5088
 5089    fn remove_from_session(&mut self, window: &mut Window, cx: &mut App) -> Task<()> {
 5090        self.session_id.take();
 5091        self.serialize_workspace_internal(window, cx)
 5092    }
 5093
 5094    fn force_remove_pane(
 5095        &mut self,
 5096        pane: &Entity<Pane>,
 5097        focus_on: &Option<Entity<Pane>>,
 5098        window: &mut Window,
 5099        cx: &mut Context<Workspace>,
 5100    ) {
 5101        self.panes.retain(|p| p != pane);
 5102        if let Some(focus_on) = focus_on {
 5103            focus_on.update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5104        } else if self.active_pane() == pane {
 5105            self.panes
 5106                .last()
 5107                .unwrap()
 5108                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5109        }
 5110        if self.last_active_center_pane == Some(pane.downgrade()) {
 5111            self.last_active_center_pane = None;
 5112        }
 5113        cx.notify();
 5114    }
 5115
 5116    fn serialize_workspace(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5117        if self._schedule_serialize_workspace.is_none() {
 5118            self._schedule_serialize_workspace =
 5119                Some(cx.spawn_in(window, async move |this, cx| {
 5120                    cx.background_executor()
 5121                        .timer(SERIALIZATION_THROTTLE_TIME)
 5122                        .await;
 5123                    this.update_in(cx, |this, window, cx| {
 5124                        this.serialize_workspace_internal(window, cx).detach();
 5125                        this._schedule_serialize_workspace.take();
 5126                    })
 5127                    .log_err();
 5128                }));
 5129        }
 5130    }
 5131
 5132    fn serialize_workspace_internal(&self, window: &mut Window, cx: &mut App) -> Task<()> {
 5133        let Some(database_id) = self.database_id() else {
 5134            return Task::ready(());
 5135        };
 5136
 5137        fn serialize_pane_handle(
 5138            pane_handle: &Entity<Pane>,
 5139            window: &mut Window,
 5140            cx: &mut App,
 5141        ) -> SerializedPane {
 5142            let (items, active, pinned_count) = {
 5143                let pane = pane_handle.read(cx);
 5144                let active_item_id = pane.active_item().map(|item| item.item_id());
 5145                (
 5146                    pane.items()
 5147                        .filter_map(|handle| {
 5148                            let handle = handle.to_serializable_item_handle(cx)?;
 5149
 5150                            Some(SerializedItem {
 5151                                kind: Arc::from(handle.serialized_item_kind()),
 5152                                item_id: handle.item_id().as_u64(),
 5153                                active: Some(handle.item_id()) == active_item_id,
 5154                                preview: pane.is_active_preview_item(handle.item_id()),
 5155                            })
 5156                        })
 5157                        .collect::<Vec<_>>(),
 5158                    pane.has_focus(window, cx),
 5159                    pane.pinned_count(),
 5160                )
 5161            };
 5162
 5163            SerializedPane::new(items, active, pinned_count)
 5164        }
 5165
 5166        fn build_serialized_pane_group(
 5167            pane_group: &Member,
 5168            window: &mut Window,
 5169            cx: &mut App,
 5170        ) -> SerializedPaneGroup {
 5171            match pane_group {
 5172                Member::Axis(PaneAxis {
 5173                    axis,
 5174                    members,
 5175                    flexes,
 5176                    bounding_boxes: _,
 5177                }) => SerializedPaneGroup::Group {
 5178                    axis: SerializedAxis(*axis),
 5179                    children: members
 5180                        .iter()
 5181                        .map(|member| build_serialized_pane_group(member, window, cx))
 5182                        .collect::<Vec<_>>(),
 5183                    flexes: Some(flexes.lock().clone()),
 5184                },
 5185                Member::Pane(pane_handle) => {
 5186                    SerializedPaneGroup::Pane(serialize_pane_handle(pane_handle, window, cx))
 5187                }
 5188            }
 5189        }
 5190
 5191        fn build_serialized_docks(
 5192            this: &Workspace,
 5193            window: &mut Window,
 5194            cx: &mut App,
 5195        ) -> DockStructure {
 5196            let left_dock = this.left_dock.read(cx);
 5197            let left_visible = left_dock.is_open();
 5198            let left_active_panel = left_dock
 5199                .active_panel()
 5200                .map(|panel| panel.persistent_name().to_string());
 5201            let left_dock_zoom = left_dock
 5202                .active_panel()
 5203                .map(|panel| panel.is_zoomed(window, cx))
 5204                .unwrap_or(false);
 5205
 5206            let right_dock = this.right_dock.read(cx);
 5207            let right_visible = right_dock.is_open();
 5208            let right_active_panel = right_dock
 5209                .active_panel()
 5210                .map(|panel| panel.persistent_name().to_string());
 5211            let right_dock_zoom = right_dock
 5212                .active_panel()
 5213                .map(|panel| panel.is_zoomed(window, cx))
 5214                .unwrap_or(false);
 5215
 5216            let bottom_dock = this.bottom_dock.read(cx);
 5217            let bottom_visible = bottom_dock.is_open();
 5218            let bottom_active_panel = bottom_dock
 5219                .active_panel()
 5220                .map(|panel| panel.persistent_name().to_string());
 5221            let bottom_dock_zoom = bottom_dock
 5222                .active_panel()
 5223                .map(|panel| panel.is_zoomed(window, cx))
 5224                .unwrap_or(false);
 5225
 5226            DockStructure {
 5227                left: DockData {
 5228                    visible: left_visible,
 5229                    active_panel: left_active_panel,
 5230                    zoom: left_dock_zoom,
 5231                },
 5232                right: DockData {
 5233                    visible: right_visible,
 5234                    active_panel: right_active_panel,
 5235                    zoom: right_dock_zoom,
 5236                },
 5237                bottom: DockData {
 5238                    visible: bottom_visible,
 5239                    active_panel: bottom_active_panel,
 5240                    zoom: bottom_dock_zoom,
 5241                },
 5242            }
 5243        }
 5244
 5245        match self.serialize_workspace_location(cx) {
 5246            WorkspaceLocation::Location(location, paths) => {
 5247                let breakpoints = self.project.update(cx, |project, cx| {
 5248                    project
 5249                        .breakpoint_store()
 5250                        .read(cx)
 5251                        .all_source_breakpoints(cx)
 5252                });
 5253
 5254                let center_group = build_serialized_pane_group(&self.center.root, window, cx);
 5255                let docks = build_serialized_docks(self, window, cx);
 5256                let window_bounds = Some(SerializedWindowBounds(window.window_bounds()));
 5257                let serialized_workspace = SerializedWorkspace {
 5258                    id: database_id,
 5259                    location,
 5260                    paths,
 5261                    center_group,
 5262                    window_bounds,
 5263                    display: Default::default(),
 5264                    docks,
 5265                    centered_layout: self.centered_layout,
 5266                    session_id: self.session_id.clone(),
 5267                    breakpoints,
 5268                    window_id: Some(window.window_handle().window_id().as_u64()),
 5269                };
 5270
 5271                window.spawn(cx, async move |_| {
 5272                    persistence::DB.save_workspace(serialized_workspace).await;
 5273                })
 5274            }
 5275            WorkspaceLocation::DetachFromSession => window.spawn(cx, async move |_| {
 5276                persistence::DB
 5277                    .set_session_id(database_id, None)
 5278                    .await
 5279                    .log_err();
 5280            }),
 5281            WorkspaceLocation::None => Task::ready(()),
 5282        }
 5283    }
 5284
 5285    fn serialize_workspace_location(&self, cx: &App) -> WorkspaceLocation {
 5286        let paths = PathList::new(&self.root_paths(cx));
 5287        if let Some(connection) = self.project.read(cx).ssh_connection_options(cx) {
 5288            WorkspaceLocation::Location(
 5289                SerializedWorkspaceLocation::Ssh(SerializedSshConnection {
 5290                    host: connection.host,
 5291                    port: connection.port,
 5292                    user: connection.username,
 5293                }),
 5294                paths,
 5295            )
 5296        } else if self.project.read(cx).is_local() {
 5297            if !paths.is_empty() {
 5298                WorkspaceLocation::Location(SerializedWorkspaceLocation::Local, paths)
 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        if !self.project.read(cx).is_local() {
 5312            return;
 5313        }
 5314        if let Some(manager) = HistoryManager::global(cx) {
 5315            let paths = PathList::new(&self.root_paths(cx));
 5316            manager.update(cx, |this, cx| {
 5317                this.update_history(id, HistoryManagerEntry::new(id, &paths), 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(Self::toggle_edit_predictions_all_files))
 5511            .on_action(cx.listener(|workspace, _: &Unfollow, window, cx| {
 5512                let pane = workspace.active_pane().clone();
 5513                workspace.unfollow_in_pane(&pane, window, cx);
 5514            }))
 5515            .on_action(cx.listener(|workspace, action: &Save, window, cx| {
 5516                workspace
 5517                    .save_active_item(action.save_intent.unwrap_or(SaveIntent::Save), window, cx)
 5518                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5519            }))
 5520            .on_action(cx.listener(|workspace, _: &SaveWithoutFormat, window, cx| {
 5521                workspace
 5522                    .save_active_item(SaveIntent::SaveWithoutFormat, window, cx)
 5523                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5524            }))
 5525            .on_action(cx.listener(|workspace, _: &SaveAs, window, cx| {
 5526                workspace
 5527                    .save_active_item(SaveIntent::SaveAs, window, cx)
 5528                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5529            }))
 5530            .on_action(
 5531                cx.listener(|workspace, _: &ActivatePreviousPane, window, cx| {
 5532                    workspace.activate_previous_pane(window, cx)
 5533                }),
 5534            )
 5535            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5536                workspace.activate_next_pane(window, cx)
 5537            }))
 5538            .on_action(
 5539                cx.listener(|workspace, _: &ActivateNextWindow, _window, cx| {
 5540                    workspace.activate_next_window(cx)
 5541                }),
 5542            )
 5543            .on_action(
 5544                cx.listener(|workspace, _: &ActivatePreviousWindow, _window, cx| {
 5545                    workspace.activate_previous_window(cx)
 5546                }),
 5547            )
 5548            .on_action(cx.listener(|workspace, _: &ActivatePaneLeft, window, cx| {
 5549                workspace.activate_pane_in_direction(SplitDirection::Left, window, cx)
 5550            }))
 5551            .on_action(cx.listener(|workspace, _: &ActivatePaneRight, window, cx| {
 5552                workspace.activate_pane_in_direction(SplitDirection::Right, window, cx)
 5553            }))
 5554            .on_action(cx.listener(|workspace, _: &ActivatePaneUp, window, cx| {
 5555                workspace.activate_pane_in_direction(SplitDirection::Up, window, cx)
 5556            }))
 5557            .on_action(cx.listener(|workspace, _: &ActivatePaneDown, window, cx| {
 5558                workspace.activate_pane_in_direction(SplitDirection::Down, window, cx)
 5559            }))
 5560            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5561                workspace.activate_next_pane(window, cx)
 5562            }))
 5563            .on_action(cx.listener(
 5564                |workspace, action: &MoveItemToPaneInDirection, window, cx| {
 5565                    workspace.move_item_to_pane_in_direction(action, window, cx)
 5566                },
 5567            ))
 5568            .on_action(cx.listener(|workspace, _: &SwapPaneLeft, _, cx| {
 5569                workspace.swap_pane_in_direction(SplitDirection::Left, cx)
 5570            }))
 5571            .on_action(cx.listener(|workspace, _: &SwapPaneRight, _, cx| {
 5572                workspace.swap_pane_in_direction(SplitDirection::Right, cx)
 5573            }))
 5574            .on_action(cx.listener(|workspace, _: &SwapPaneUp, _, cx| {
 5575                workspace.swap_pane_in_direction(SplitDirection::Up, cx)
 5576            }))
 5577            .on_action(cx.listener(|workspace, _: &SwapPaneDown, _, cx| {
 5578                workspace.swap_pane_in_direction(SplitDirection::Down, cx)
 5579            }))
 5580            .on_action(cx.listener(|this, _: &ToggleLeftDock, window, cx| {
 5581                this.toggle_dock(DockPosition::Left, window, cx);
 5582            }))
 5583            .on_action(cx.listener(
 5584                |workspace: &mut Workspace, _: &ToggleRightDock, window, cx| {
 5585                    workspace.toggle_dock(DockPosition::Right, window, cx);
 5586                },
 5587            ))
 5588            .on_action(cx.listener(
 5589                |workspace: &mut Workspace, _: &ToggleBottomDock, window, cx| {
 5590                    workspace.toggle_dock(DockPosition::Bottom, window, cx);
 5591                },
 5592            ))
 5593            .on_action(cx.listener(
 5594                |workspace: &mut Workspace, _: &CloseActiveDock, window, cx| {
 5595                    if !workspace.close_active_dock(window, cx) {
 5596                        cx.propagate();
 5597                    }
 5598                },
 5599            ))
 5600            .on_action(
 5601                cx.listener(|workspace: &mut Workspace, _: &CloseAllDocks, window, cx| {
 5602                    workspace.close_all_docks(window, cx);
 5603                }),
 5604            )
 5605            .on_action(cx.listener(
 5606                |workspace: &mut Workspace, _: &ClearAllNotifications, _, cx| {
 5607                    workspace.clear_all_notifications(cx);
 5608                },
 5609            ))
 5610            .on_action(cx.listener(
 5611                |workspace: &mut Workspace, _: &SuppressNotification, _, cx| {
 5612                    if let Some((notification_id, _)) = workspace.notifications.pop() {
 5613                        workspace.suppress_notification(&notification_id, cx);
 5614                    }
 5615                },
 5616            ))
 5617            .on_action(cx.listener(
 5618                |workspace: &mut Workspace, _: &ReopenClosedItem, window, cx| {
 5619                    workspace.reopen_closed_item(window, cx).detach();
 5620                },
 5621            ))
 5622            .on_action(cx.listener(
 5623                |workspace: &mut Workspace, _: &ResetActiveDockSize, window, cx| {
 5624                    for dock in workspace.all_docks() {
 5625                        if dock.focus_handle(cx).contains_focused(window, cx) {
 5626                            let Some(panel) = dock.read(cx).active_panel() else {
 5627                                return;
 5628                            };
 5629
 5630                            // Set to `None`, then the size will fall back to the default.
 5631                            panel.clone().set_size(None, window, cx);
 5632
 5633                            return;
 5634                        }
 5635                    }
 5636                },
 5637            ))
 5638            .on_action(cx.listener(
 5639                |workspace: &mut Workspace, _: &ResetOpenDocksSize, window, cx| {
 5640                    for dock in workspace.all_docks() {
 5641                        if let Some(panel) = dock.read(cx).visible_panel() {
 5642                            // Set to `None`, then the size will fall back to the default.
 5643                            panel.clone().set_size(None, window, cx);
 5644                        }
 5645                    }
 5646                },
 5647            ))
 5648            .on_action(cx.listener(
 5649                |workspace: &mut Workspace, act: &IncreaseActiveDockSize, window, cx| {
 5650                    adjust_active_dock_size_by_px(
 5651                        px_with_ui_font_fallback(act.px, cx),
 5652                        workspace,
 5653                        window,
 5654                        cx,
 5655                    );
 5656                },
 5657            ))
 5658            .on_action(cx.listener(
 5659                |workspace: &mut Workspace, act: &DecreaseActiveDockSize, window, cx| {
 5660                    adjust_active_dock_size_by_px(
 5661                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5662                        workspace,
 5663                        window,
 5664                        cx,
 5665                    );
 5666                },
 5667            ))
 5668            .on_action(cx.listener(
 5669                |workspace: &mut Workspace, act: &IncreaseOpenDocksSize, window, cx| {
 5670                    adjust_open_docks_size_by_px(
 5671                        px_with_ui_font_fallback(act.px, cx),
 5672                        workspace,
 5673                        window,
 5674                        cx,
 5675                    );
 5676                },
 5677            ))
 5678            .on_action(cx.listener(
 5679                |workspace: &mut Workspace, act: &DecreaseOpenDocksSize, window, cx| {
 5680                    adjust_open_docks_size_by_px(
 5681                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5682                        workspace,
 5683                        window,
 5684                        cx,
 5685                    );
 5686                },
 5687            ))
 5688            .on_action(cx.listener(Workspace::toggle_centered_layout))
 5689            .on_action(cx.listener(Workspace::cancel))
 5690    }
 5691
 5692    #[cfg(any(test, feature = "test-support"))]
 5693    pub fn test_new(project: Entity<Project>, window: &mut Window, cx: &mut Context<Self>) -> Self {
 5694        use node_runtime::NodeRuntime;
 5695        use session::Session;
 5696
 5697        let client = project.read(cx).client();
 5698        let user_store = project.read(cx).user_store();
 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        } else if let Some((notification_id, _)) = self.notifications.pop() {
 5870            dismiss_app_notification(&notification_id, cx);
 5871        } else {
 5872            cx.propagate();
 5873        }
 5874    }
 5875
 5876    fn adjust_dock_size_by_px(
 5877        &mut self,
 5878        panel_size: Pixels,
 5879        dock_pos: DockPosition,
 5880        px: Pixels,
 5881        window: &mut Window,
 5882        cx: &mut Context<Self>,
 5883    ) {
 5884        match dock_pos {
 5885            DockPosition::Left => self.resize_left_dock(panel_size + px, window, cx),
 5886            DockPosition::Right => self.resize_right_dock(panel_size + px, window, cx),
 5887            DockPosition::Bottom => self.resize_bottom_dock(panel_size + px, window, cx),
 5888        }
 5889    }
 5890
 5891    fn resize_left_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5892        let size = new_size.min(self.bounds.right() - RESIZE_HANDLE_SIZE);
 5893
 5894        self.left_dock.update(cx, |left_dock, cx| {
 5895            if WorkspaceSettings::get_global(cx)
 5896                .resize_all_panels_in_dock
 5897                .contains(&DockPosition::Left)
 5898            {
 5899                left_dock.resize_all_panels(Some(size), window, cx);
 5900            } else {
 5901                left_dock.resize_active_panel(Some(size), window, cx);
 5902            }
 5903        });
 5904    }
 5905
 5906    fn resize_right_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5907        let mut size = new_size.max(self.bounds.left() - RESIZE_HANDLE_SIZE);
 5908        self.left_dock.read_with(cx, |left_dock, cx| {
 5909            let left_dock_size = left_dock
 5910                .active_panel_size(window, cx)
 5911                .unwrap_or(Pixels(0.0));
 5912            if left_dock_size + size > self.bounds.right() {
 5913                size = self.bounds.right() - left_dock_size
 5914            }
 5915        });
 5916        self.right_dock.update(cx, |right_dock, cx| {
 5917            if WorkspaceSettings::get_global(cx)
 5918                .resize_all_panels_in_dock
 5919                .contains(&DockPosition::Right)
 5920            {
 5921                right_dock.resize_all_panels(Some(size), window, cx);
 5922            } else {
 5923                right_dock.resize_active_panel(Some(size), window, cx);
 5924            }
 5925        });
 5926    }
 5927
 5928    fn resize_bottom_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5929        let size = new_size.min(self.bounds.bottom() - RESIZE_HANDLE_SIZE - self.bounds.top());
 5930        self.bottom_dock.update(cx, |bottom_dock, cx| {
 5931            if WorkspaceSettings::get_global(cx)
 5932                .resize_all_panels_in_dock
 5933                .contains(&DockPosition::Bottom)
 5934            {
 5935                bottom_dock.resize_all_panels(Some(size), window, cx);
 5936            } else {
 5937                bottom_dock.resize_active_panel(Some(size), window, cx);
 5938            }
 5939        });
 5940    }
 5941
 5942    fn toggle_edit_predictions_all_files(
 5943        &mut self,
 5944        _: &ToggleEditPrediction,
 5945        _window: &mut Window,
 5946        cx: &mut Context<Self>,
 5947    ) {
 5948        let fs = self.project().read(cx).fs().clone();
 5949        let show_edit_predictions = all_language_settings(None, cx).show_edit_predictions(None, cx);
 5950        update_settings_file::<AllLanguageSettings>(fs, cx, move |file, _| {
 5951            file.defaults.show_edit_predictions = Some(!show_edit_predictions)
 5952        });
 5953    }
 5954}
 5955
 5956fn leader_border_for_pane(
 5957    follower_states: &HashMap<CollaboratorId, FollowerState>,
 5958    pane: &Entity<Pane>,
 5959    _: &Window,
 5960    cx: &App,
 5961) -> Option<Div> {
 5962    let (leader_id, _follower_state) = follower_states.iter().find_map(|(leader_id, state)| {
 5963        if state.pane() == pane {
 5964            Some((*leader_id, state))
 5965        } else {
 5966            None
 5967        }
 5968    })?;
 5969
 5970    let mut leader_color = match leader_id {
 5971        CollaboratorId::PeerId(leader_peer_id) => {
 5972            let room = ActiveCall::try_global(cx)?.read(cx).room()?.read(cx);
 5973            let leader = room.remote_participant_for_peer_id(leader_peer_id)?;
 5974
 5975            cx.theme()
 5976                .players()
 5977                .color_for_participant(leader.participant_index.0)
 5978                .cursor
 5979        }
 5980        CollaboratorId::Agent => cx.theme().players().agent().cursor,
 5981    };
 5982    leader_color.fade_out(0.3);
 5983    Some(
 5984        div()
 5985            .absolute()
 5986            .size_full()
 5987            .left_0()
 5988            .top_0()
 5989            .border_2()
 5990            .border_color(leader_color),
 5991    )
 5992}
 5993
 5994fn window_bounds_env_override() -> Option<Bounds<Pixels>> {
 5995    ZED_WINDOW_POSITION
 5996        .zip(*ZED_WINDOW_SIZE)
 5997        .map(|(position, size)| Bounds {
 5998            origin: position,
 5999            size,
 6000        })
 6001}
 6002
 6003fn open_items(
 6004    serialized_workspace: Option<SerializedWorkspace>,
 6005    mut project_paths_to_open: Vec<(PathBuf, Option<ProjectPath>)>,
 6006    window: &mut Window,
 6007    cx: &mut Context<Workspace>,
 6008) -> impl 'static + Future<Output = Result<Vec<Option<Result<Box<dyn ItemHandle>>>>>> + use<> {
 6009    let restored_items = serialized_workspace.map(|serialized_workspace| {
 6010        Workspace::load_workspace(
 6011            serialized_workspace,
 6012            project_paths_to_open
 6013                .iter()
 6014                .map(|(_, project_path)| project_path)
 6015                .cloned()
 6016                .collect(),
 6017            window,
 6018            cx,
 6019        )
 6020    });
 6021
 6022    cx.spawn_in(window, async move |workspace, cx| {
 6023        let mut opened_items = Vec::with_capacity(project_paths_to_open.len());
 6024
 6025        if let Some(restored_items) = restored_items {
 6026            let restored_items = restored_items.await?;
 6027
 6028            let restored_project_paths = restored_items
 6029                .iter()
 6030                .filter_map(|item| {
 6031                    cx.update(|_, cx| item.as_ref()?.project_path(cx))
 6032                        .ok()
 6033                        .flatten()
 6034                })
 6035                .collect::<HashSet<_>>();
 6036
 6037            for restored_item in restored_items {
 6038                opened_items.push(restored_item.map(Ok));
 6039            }
 6040
 6041            project_paths_to_open
 6042                .iter_mut()
 6043                .for_each(|(_, project_path)| {
 6044                    if let Some(project_path_to_open) = project_path
 6045                        && restored_project_paths.contains(project_path_to_open)
 6046                    {
 6047                        *project_path = None;
 6048                    }
 6049                });
 6050        } else {
 6051            for _ in 0..project_paths_to_open.len() {
 6052                opened_items.push(None);
 6053            }
 6054        }
 6055        assert!(opened_items.len() == project_paths_to_open.len());
 6056
 6057        let tasks =
 6058            project_paths_to_open
 6059                .into_iter()
 6060                .enumerate()
 6061                .map(|(ix, (abs_path, project_path))| {
 6062                    let workspace = workspace.clone();
 6063                    cx.spawn(async move |cx| {
 6064                        let file_project_path = project_path?;
 6065                        let abs_path_task = workspace.update(cx, |workspace, cx| {
 6066                            workspace.project().update(cx, |project, cx| {
 6067                                project.resolve_abs_path(abs_path.to_string_lossy().as_ref(), cx)
 6068                            })
 6069                        });
 6070
 6071                        // We only want to open file paths here. If one of the items
 6072                        // here is a directory, it was already opened further above
 6073                        // with a `find_or_create_worktree`.
 6074                        if let Ok(task) = abs_path_task
 6075                            && task.await.is_none_or(|p| p.is_file())
 6076                        {
 6077                            return Some((
 6078                                ix,
 6079                                workspace
 6080                                    .update_in(cx, |workspace, window, cx| {
 6081                                        workspace.open_path(
 6082                                            file_project_path,
 6083                                            None,
 6084                                            true,
 6085                                            window,
 6086                                            cx,
 6087                                        )
 6088                                    })
 6089                                    .log_err()?
 6090                                    .await,
 6091                            ));
 6092                        }
 6093                        None
 6094                    })
 6095                });
 6096
 6097        let tasks = tasks.collect::<Vec<_>>();
 6098
 6099        let tasks = futures::future::join_all(tasks);
 6100        for (ix, path_open_result) in tasks.await.into_iter().flatten() {
 6101            opened_items[ix] = Some(path_open_result);
 6102        }
 6103
 6104        Ok(opened_items)
 6105    })
 6106}
 6107
 6108enum ActivateInDirectionTarget {
 6109    Pane(Entity<Pane>),
 6110    Dock(Entity<Dock>),
 6111}
 6112
 6113fn notify_if_database_failed(workspace: WindowHandle<Workspace>, cx: &mut AsyncApp) {
 6114    workspace
 6115        .update(cx, |workspace, _, cx| {
 6116            if (*db::ALL_FILE_DB_FAILED).load(std::sync::atomic::Ordering::Acquire) {
 6117                struct DatabaseFailedNotification;
 6118
 6119                workspace.show_notification(
 6120                    NotificationId::unique::<DatabaseFailedNotification>(),
 6121                    cx,
 6122                    |cx| {
 6123                        cx.new(|cx| {
 6124                            MessageNotification::new("Failed to load the database file.", cx)
 6125                                .primary_message("File an Issue")
 6126                                .primary_icon(IconName::Plus)
 6127                                .primary_on_click(|window, cx| {
 6128                                    window.dispatch_action(Box::new(FileBugReport), cx)
 6129                                })
 6130                        })
 6131                    },
 6132                );
 6133            }
 6134        })
 6135        .log_err();
 6136}
 6137
 6138fn px_with_ui_font_fallback(val: u32, cx: &Context<Workspace>) -> Pixels {
 6139    if val == 0 {
 6140        ThemeSettings::get_global(cx).ui_font_size(cx)
 6141    } else {
 6142        px(val as f32)
 6143    }
 6144}
 6145
 6146fn adjust_active_dock_size_by_px(
 6147    px: Pixels,
 6148    workspace: &mut Workspace,
 6149    window: &mut Window,
 6150    cx: &mut Context<Workspace>,
 6151) {
 6152    let Some(active_dock) = workspace
 6153        .all_docks()
 6154        .into_iter()
 6155        .find(|dock| dock.focus_handle(cx).contains_focused(window, cx))
 6156    else {
 6157        return;
 6158    };
 6159    let dock = active_dock.read(cx);
 6160    let Some(panel_size) = dock.active_panel_size(window, cx) else {
 6161        return;
 6162    };
 6163    let dock_pos = dock.position();
 6164    workspace.adjust_dock_size_by_px(panel_size, dock_pos, px, window, cx);
 6165}
 6166
 6167fn adjust_open_docks_size_by_px(
 6168    px: Pixels,
 6169    workspace: &mut Workspace,
 6170    window: &mut Window,
 6171    cx: &mut Context<Workspace>,
 6172) {
 6173    let docks = workspace
 6174        .all_docks()
 6175        .into_iter()
 6176        .filter_map(|dock| {
 6177            if dock.read(cx).is_open() {
 6178                let dock = dock.read(cx);
 6179                let panel_size = dock.active_panel_size(window, cx)?;
 6180                let dock_pos = dock.position();
 6181                Some((panel_size, dock_pos, px))
 6182            } else {
 6183                None
 6184            }
 6185        })
 6186        .collect::<Vec<_>>();
 6187
 6188    docks
 6189        .into_iter()
 6190        .for_each(|(panel_size, dock_pos, offset)| {
 6191            workspace.adjust_dock_size_by_px(panel_size, dock_pos, offset, window, cx);
 6192        });
 6193}
 6194
 6195impl Focusable for Workspace {
 6196    fn focus_handle(&self, cx: &App) -> FocusHandle {
 6197        self.active_pane.focus_handle(cx)
 6198    }
 6199}
 6200
 6201#[derive(Clone)]
 6202struct DraggedDock(DockPosition);
 6203
 6204impl Render for DraggedDock {
 6205    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
 6206        gpui::Empty
 6207    }
 6208}
 6209
 6210impl Render for Workspace {
 6211    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 6212        let mut context = KeyContext::new_with_defaults();
 6213        context.add("Workspace");
 6214        context.set("keyboard_layout", cx.keyboard_layout().name().to_string());
 6215        if let Some(status) = self
 6216            .debugger_provider
 6217            .as_ref()
 6218            .and_then(|provider| provider.active_thread_state(cx))
 6219        {
 6220            match status {
 6221                ThreadStatus::Running | ThreadStatus::Stepping => {
 6222                    context.add("debugger_running");
 6223                }
 6224                ThreadStatus::Stopped => context.add("debugger_stopped"),
 6225                ThreadStatus::Exited | ThreadStatus::Ended => {}
 6226            }
 6227        }
 6228
 6229        let centered_layout = self.centered_layout
 6230            && self.center.panes().len() == 1
 6231            && self.active_item(cx).is_some();
 6232        let render_padding = |size| {
 6233            (size > 0.0).then(|| {
 6234                div()
 6235                    .h_full()
 6236                    .w(relative(size))
 6237                    .bg(cx.theme().colors().editor_background)
 6238                    .border_color(cx.theme().colors().pane_group_border)
 6239            })
 6240        };
 6241        let paddings = if centered_layout {
 6242            let settings = WorkspaceSettings::get_global(cx).centered_layout;
 6243            (
 6244                render_padding(Self::adjust_padding(settings.left_padding)),
 6245                render_padding(Self::adjust_padding(settings.right_padding)),
 6246            )
 6247        } else {
 6248            (None, None)
 6249        };
 6250        let ui_font = theme::setup_ui_font(window, cx);
 6251
 6252        let theme = cx.theme().clone();
 6253        let colors = theme.colors();
 6254        let notification_entities = self
 6255            .notifications
 6256            .iter()
 6257            .map(|(_, notification)| notification.entity_id())
 6258            .collect::<Vec<_>>();
 6259        let bottom_dock_layout = WorkspaceSettings::get_global(cx).bottom_dock_layout;
 6260
 6261        client_side_decorations(
 6262            self.actions(div(), window, cx)
 6263                .key_context(context)
 6264                .relative()
 6265                .size_full()
 6266                .flex()
 6267                .flex_col()
 6268                .font(ui_font)
 6269                .gap_0()
 6270                .justify_start()
 6271                .items_start()
 6272                .text_color(colors.text)
 6273                .overflow_hidden()
 6274                .children(self.titlebar_item.clone())
 6275                .on_modifiers_changed(move |_, _, cx| {
 6276                    for &id in &notification_entities {
 6277                        cx.notify(id);
 6278                    }
 6279                })
 6280                .child(
 6281                    div()
 6282                        .size_full()
 6283                        .relative()
 6284                        .flex_1()
 6285                        .flex()
 6286                        .flex_col()
 6287                        .child(
 6288                            div()
 6289                                .id("workspace")
 6290                                .bg(colors.background)
 6291                                .relative()
 6292                                .flex_1()
 6293                                .w_full()
 6294                                .flex()
 6295                                .flex_col()
 6296                                .overflow_hidden()
 6297                                .border_t_1()
 6298                                .border_b_1()
 6299                                .border_color(colors.border)
 6300                                .child({
 6301                                    let this = cx.entity();
 6302                                    canvas(
 6303                                        move |bounds, window, cx| {
 6304                                            this.update(cx, |this, cx| {
 6305                                                let bounds_changed = this.bounds != bounds;
 6306                                                this.bounds = bounds;
 6307
 6308                                                if bounds_changed {
 6309                                                    this.left_dock.update(cx, |dock, cx| {
 6310                                                        dock.clamp_panel_size(
 6311                                                            bounds.size.width,
 6312                                                            window,
 6313                                                            cx,
 6314                                                        )
 6315                                                    });
 6316
 6317                                                    this.right_dock.update(cx, |dock, cx| {
 6318                                                        dock.clamp_panel_size(
 6319                                                            bounds.size.width,
 6320                                                            window,
 6321                                                            cx,
 6322                                                        )
 6323                                                    });
 6324
 6325                                                    this.bottom_dock.update(cx, |dock, cx| {
 6326                                                        dock.clamp_panel_size(
 6327                                                            bounds.size.height,
 6328                                                            window,
 6329                                                            cx,
 6330                                                        )
 6331                                                    });
 6332                                                }
 6333                                            })
 6334                                        },
 6335                                        |_, _, _, _| {},
 6336                                    )
 6337                                    .absolute()
 6338                                    .size_full()
 6339                                })
 6340                                .when(self.zoomed.is_none(), |this| {
 6341                                    this.on_drag_move(cx.listener(
 6342                                        move |workspace,
 6343                                              e: &DragMoveEvent<DraggedDock>,
 6344                                              window,
 6345                                              cx| {
 6346                                            if workspace.previous_dock_drag_coordinates
 6347                                                != Some(e.event.position)
 6348                                            {
 6349                                                workspace.previous_dock_drag_coordinates =
 6350                                                    Some(e.event.position);
 6351                                                match e.drag(cx).0 {
 6352                                                    DockPosition::Left => {
 6353                                                        workspace.resize_left_dock(
 6354                                                            e.event.position.x
 6355                                                                - workspace.bounds.left(),
 6356                                                            window,
 6357                                                            cx,
 6358                                                        );
 6359                                                    }
 6360                                                    DockPosition::Right => {
 6361                                                        workspace.resize_right_dock(
 6362                                                            workspace.bounds.right()
 6363                                                                - e.event.position.x,
 6364                                                            window,
 6365                                                            cx,
 6366                                                        );
 6367                                                    }
 6368                                                    DockPosition::Bottom => {
 6369                                                        workspace.resize_bottom_dock(
 6370                                                            workspace.bounds.bottom()
 6371                                                                - e.event.position.y,
 6372                                                            window,
 6373                                                            cx,
 6374                                                        );
 6375                                                    }
 6376                                                };
 6377                                                workspace.serialize_workspace(window, cx);
 6378                                            }
 6379                                        },
 6380                                    ))
 6381                                })
 6382                                .child({
 6383                                    match bottom_dock_layout {
 6384                                        BottomDockLayout::Full => div()
 6385                                            .flex()
 6386                                            .flex_col()
 6387                                            .h_full()
 6388                                            .child(
 6389                                                div()
 6390                                                    .flex()
 6391                                                    .flex_row()
 6392                                                    .flex_1()
 6393                                                    .overflow_hidden()
 6394                                                    .children(self.render_dock(
 6395                                                        DockPosition::Left,
 6396                                                        &self.left_dock,
 6397                                                        window,
 6398                                                        cx,
 6399                                                    ))
 6400                                                    .child(
 6401                                                        div()
 6402                                                            .flex()
 6403                                                            .flex_col()
 6404                                                            .flex_1()
 6405                                                            .overflow_hidden()
 6406                                                            .child(
 6407                                                                h_flex()
 6408                                                                    .flex_1()
 6409                                                                    .when_some(
 6410                                                                        paddings.0,
 6411                                                                        |this, p| {
 6412                                                                            this.child(
 6413                                                                                p.border_r_1(),
 6414                                                                            )
 6415                                                                        },
 6416                                                                    )
 6417                                                                    .child(self.center.render(
 6418                                                                        self.zoomed.as_ref(),
 6419                                                                        &PaneRenderContext {
 6420                                                                            follower_states:
 6421                                                                                &self.follower_states,
 6422                                                                            active_call: self.active_call(),
 6423                                                                            active_pane: &self.active_pane,
 6424                                                                            app_state: &self.app_state,
 6425                                                                            project: &self.project,
 6426                                                                            workspace: &self.weak_self,
 6427                                                                        },
 6428                                                                        window,
 6429                                                                        cx,
 6430                                                                    ))
 6431                                                                    .when_some(
 6432                                                                        paddings.1,
 6433                                                                        |this, p| {
 6434                                                                            this.child(
 6435                                                                                p.border_l_1(),
 6436                                                                            )
 6437                                                                        },
 6438                                                                    ),
 6439                                                            ),
 6440                                                    )
 6441                                                    .children(self.render_dock(
 6442                                                        DockPosition::Right,
 6443                                                        &self.right_dock,
 6444                                                        window,
 6445                                                        cx,
 6446                                                    )),
 6447                                            )
 6448                                            .child(div().w_full().children(self.render_dock(
 6449                                                DockPosition::Bottom,
 6450                                                &self.bottom_dock,
 6451                                                window,
 6452                                                cx
 6453                                            ))),
 6454
 6455                                        BottomDockLayout::LeftAligned => div()
 6456                                            .flex()
 6457                                            .flex_row()
 6458                                            .h_full()
 6459                                            .child(
 6460                                                div()
 6461                                                    .flex()
 6462                                                    .flex_col()
 6463                                                    .flex_1()
 6464                                                    .h_full()
 6465                                                    .child(
 6466                                                        div()
 6467                                                            .flex()
 6468                                                            .flex_row()
 6469                                                            .flex_1()
 6470                                                            .children(self.render_dock(DockPosition::Left, &self.left_dock, window, cx))
 6471                                                            .child(
 6472                                                                div()
 6473                                                                    .flex()
 6474                                                                    .flex_col()
 6475                                                                    .flex_1()
 6476                                                                    .overflow_hidden()
 6477                                                                    .child(
 6478                                                                        h_flex()
 6479                                                                            .flex_1()
 6480                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6481                                                                            .child(self.center.render(
 6482                                                                                self.zoomed.as_ref(),
 6483                                                                                &PaneRenderContext {
 6484                                                                                    follower_states:
 6485                                                                                        &self.follower_states,
 6486                                                                                    active_call: self.active_call(),
 6487                                                                                    active_pane: &self.active_pane,
 6488                                                                                    app_state: &self.app_state,
 6489                                                                                    project: &self.project,
 6490                                                                                    workspace: &self.weak_self,
 6491                                                                                },
 6492                                                                                window,
 6493                                                                                cx,
 6494                                                                            ))
 6495                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6496                                                                    )
 6497                                                            )
 6498                                                    )
 6499                                                    .child(
 6500                                                        div()
 6501                                                            .w_full()
 6502                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6503                                                    ),
 6504                                            )
 6505                                            .children(self.render_dock(
 6506                                                DockPosition::Right,
 6507                                                &self.right_dock,
 6508                                                window,
 6509                                                cx,
 6510                                            )),
 6511
 6512                                        BottomDockLayout::RightAligned => div()
 6513                                            .flex()
 6514                                            .flex_row()
 6515                                            .h_full()
 6516                                            .children(self.render_dock(
 6517                                                DockPosition::Left,
 6518                                                &self.left_dock,
 6519                                                window,
 6520                                                cx,
 6521                                            ))
 6522                                            .child(
 6523                                                div()
 6524                                                    .flex()
 6525                                                    .flex_col()
 6526                                                    .flex_1()
 6527                                                    .h_full()
 6528                                                    .child(
 6529                                                        div()
 6530                                                            .flex()
 6531                                                            .flex_row()
 6532                                                            .flex_1()
 6533                                                            .child(
 6534                                                                div()
 6535                                                                    .flex()
 6536                                                                    .flex_col()
 6537                                                                    .flex_1()
 6538                                                                    .overflow_hidden()
 6539                                                                    .child(
 6540                                                                        h_flex()
 6541                                                                            .flex_1()
 6542                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6543                                                                            .child(self.center.render(
 6544                                                                                self.zoomed.as_ref(),
 6545                                                                                &PaneRenderContext {
 6546                                                                                    follower_states:
 6547                                                                                        &self.follower_states,
 6548                                                                                    active_call: self.active_call(),
 6549                                                                                    active_pane: &self.active_pane,
 6550                                                                                    app_state: &self.app_state,
 6551                                                                                    project: &self.project,
 6552                                                                                    workspace: &self.weak_self,
 6553                                                                                },
 6554                                                                                window,
 6555                                                                                cx,
 6556                                                                            ))
 6557                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6558                                                                    )
 6559                                                            )
 6560                                                            .children(self.render_dock(DockPosition::Right, &self.right_dock, window, cx))
 6561                                                    )
 6562                                                    .child(
 6563                                                        div()
 6564                                                            .w_full()
 6565                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6566                                                    ),
 6567                                            ),
 6568
 6569                                        BottomDockLayout::Contained => div()
 6570                                            .flex()
 6571                                            .flex_row()
 6572                                            .h_full()
 6573                                            .children(self.render_dock(
 6574                                                DockPosition::Left,
 6575                                                &self.left_dock,
 6576                                                window,
 6577                                                cx,
 6578                                            ))
 6579                                            .child(
 6580                                                div()
 6581                                                    .flex()
 6582                                                    .flex_col()
 6583                                                    .flex_1()
 6584                                                    .overflow_hidden()
 6585                                                    .child(
 6586                                                        h_flex()
 6587                                                            .flex_1()
 6588                                                            .when_some(paddings.0, |this, p| {
 6589                                                                this.child(p.border_r_1())
 6590                                                            })
 6591                                                            .child(self.center.render(
 6592                                                                self.zoomed.as_ref(),
 6593                                                                &PaneRenderContext {
 6594                                                                    follower_states:
 6595                                                                        &self.follower_states,
 6596                                                                    active_call: self.active_call(),
 6597                                                                    active_pane: &self.active_pane,
 6598                                                                    app_state: &self.app_state,
 6599                                                                    project: &self.project,
 6600                                                                    workspace: &self.weak_self,
 6601                                                                },
 6602                                                                window,
 6603                                                                cx,
 6604                                                            ))
 6605                                                            .when_some(paddings.1, |this, p| {
 6606                                                                this.child(p.border_l_1())
 6607                                                            }),
 6608                                                    )
 6609                                                    .children(self.render_dock(
 6610                                                        DockPosition::Bottom,
 6611                                                        &self.bottom_dock,
 6612                                                        window,
 6613                                                        cx,
 6614                                                    )),
 6615                                            )
 6616                                            .children(self.render_dock(
 6617                                                DockPosition::Right,
 6618                                                &self.right_dock,
 6619                                                window,
 6620                                                cx,
 6621                                            )),
 6622                                    }
 6623                                })
 6624                                .children(self.zoomed.as_ref().and_then(|view| {
 6625                                    let zoomed_view = view.upgrade()?;
 6626                                    let div = div()
 6627                                        .occlude()
 6628                                        .absolute()
 6629                                        .overflow_hidden()
 6630                                        .border_color(colors.border)
 6631                                        .bg(colors.background)
 6632                                        .child(zoomed_view)
 6633                                        .inset_0()
 6634                                        .shadow_lg();
 6635
 6636                                    Some(match self.zoomed_position {
 6637                                        Some(DockPosition::Left) => div.right_2().border_r_1(),
 6638                                        Some(DockPosition::Right) => div.left_2().border_l_1(),
 6639                                        Some(DockPosition::Bottom) => div.top_2().border_t_1(),
 6640                                        None => {
 6641                                            div.top_2().bottom_2().left_2().right_2().border_1()
 6642                                        }
 6643                                    })
 6644                                }))
 6645                                .children(self.render_notifications(window, cx)),
 6646                        )
 6647                        .child(self.status_bar.clone())
 6648                        .child(self.modal_layer.clone())
 6649                        .child(self.toast_layer.clone()),
 6650                ),
 6651            window,
 6652            cx,
 6653        )
 6654    }
 6655}
 6656
 6657impl WorkspaceStore {
 6658    pub fn new(client: Arc<Client>, cx: &mut Context<Self>) -> Self {
 6659        Self {
 6660            workspaces: Default::default(),
 6661            _subscriptions: vec![
 6662                client.add_request_handler(cx.weak_entity(), Self::handle_follow),
 6663                client.add_message_handler(cx.weak_entity(), Self::handle_update_followers),
 6664            ],
 6665            client,
 6666        }
 6667    }
 6668
 6669    pub fn update_followers(
 6670        &self,
 6671        project_id: Option<u64>,
 6672        update: proto::update_followers::Variant,
 6673        cx: &App,
 6674    ) -> Option<()> {
 6675        let active_call = ActiveCall::try_global(cx)?;
 6676        let room_id = active_call.read(cx).room()?.read(cx).id();
 6677        self.client
 6678            .send(proto::UpdateFollowers {
 6679                room_id,
 6680                project_id,
 6681                variant: Some(update),
 6682            })
 6683            .log_err()
 6684    }
 6685
 6686    pub async fn handle_follow(
 6687        this: Entity<Self>,
 6688        envelope: TypedEnvelope<proto::Follow>,
 6689        mut cx: AsyncApp,
 6690    ) -> Result<proto::FollowResponse> {
 6691        this.update(&mut cx, |this, cx| {
 6692            let follower = Follower {
 6693                project_id: envelope.payload.project_id,
 6694                peer_id: envelope.original_sender_id()?,
 6695            };
 6696
 6697            let mut response = proto::FollowResponse::default();
 6698            this.workspaces.retain(|workspace| {
 6699                workspace
 6700                    .update(cx, |workspace, window, cx| {
 6701                        let handler_response =
 6702                            workspace.handle_follow(follower.project_id, window, cx);
 6703                        if let Some(active_view) = handler_response.active_view
 6704                            && workspace.project.read(cx).remote_id() == follower.project_id
 6705                        {
 6706                            response.active_view = Some(active_view)
 6707                        }
 6708                    })
 6709                    .is_ok()
 6710            });
 6711
 6712            Ok(response)
 6713        })?
 6714    }
 6715
 6716    async fn handle_update_followers(
 6717        this: Entity<Self>,
 6718        envelope: TypedEnvelope<proto::UpdateFollowers>,
 6719        mut cx: AsyncApp,
 6720    ) -> Result<()> {
 6721        let leader_id = envelope.original_sender_id()?;
 6722        let update = envelope.payload;
 6723
 6724        this.update(&mut cx, |this, cx| {
 6725            this.workspaces.retain(|workspace| {
 6726                workspace
 6727                    .update(cx, |workspace, window, cx| {
 6728                        let project_id = workspace.project.read(cx).remote_id();
 6729                        if update.project_id != project_id && update.project_id.is_some() {
 6730                            return;
 6731                        }
 6732                        workspace.handle_update_followers(leader_id, update.clone(), window, cx);
 6733                    })
 6734                    .is_ok()
 6735            });
 6736            Ok(())
 6737        })?
 6738    }
 6739
 6740    pub fn workspaces(&self) -> &HashSet<WindowHandle<Workspace>> {
 6741        &self.workspaces
 6742    }
 6743}
 6744
 6745impl ViewId {
 6746    pub(crate) fn from_proto(message: proto::ViewId) -> Result<Self> {
 6747        Ok(Self {
 6748            creator: message
 6749                .creator
 6750                .map(CollaboratorId::PeerId)
 6751                .context("creator is missing")?,
 6752            id: message.id,
 6753        })
 6754    }
 6755
 6756    pub(crate) fn to_proto(self) -> Option<proto::ViewId> {
 6757        if let CollaboratorId::PeerId(peer_id) = self.creator {
 6758            Some(proto::ViewId {
 6759                creator: Some(peer_id),
 6760                id: self.id,
 6761            })
 6762        } else {
 6763            None
 6764        }
 6765    }
 6766}
 6767
 6768impl FollowerState {
 6769    fn pane(&self) -> &Entity<Pane> {
 6770        self.dock_pane.as_ref().unwrap_or(&self.center_pane)
 6771    }
 6772}
 6773
 6774pub trait WorkspaceHandle {
 6775    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath>;
 6776}
 6777
 6778impl WorkspaceHandle for Entity<Workspace> {
 6779    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath> {
 6780        self.read(cx)
 6781            .worktrees(cx)
 6782            .flat_map(|worktree| {
 6783                let worktree_id = worktree.read(cx).id();
 6784                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
 6785                    worktree_id,
 6786                    path: f.path.clone(),
 6787                })
 6788            })
 6789            .collect::<Vec<_>>()
 6790    }
 6791}
 6792
 6793pub async fn last_opened_workspace_location() -> Option<(SerializedWorkspaceLocation, PathList)> {
 6794    DB.last_workspace().await.log_err().flatten()
 6795}
 6796
 6797pub fn last_session_workspace_locations(
 6798    last_session_id: &str,
 6799    last_session_window_stack: Option<Vec<WindowId>>,
 6800) -> Option<Vec<(SerializedWorkspaceLocation, PathList)>> {
 6801    DB.last_session_workspace_locations(last_session_id, last_session_window_stack)
 6802        .log_err()
 6803}
 6804
 6805actions!(
 6806    collab,
 6807    [
 6808        /// Opens the channel notes for the current call.
 6809        ///
 6810        /// If you want to open a specific channel, use `zed::OpenZedUrl` with a channel notes URL -
 6811        /// can be copied via "Copy link to section" in the context menu of the channel notes
 6812        /// buffer. These URLs look like `https://zed.dev/channel/channel-name-CHANNEL_ID/notes`.
 6813        OpenChannelNotes,
 6814        /// Mutes your microphone.
 6815        Mute,
 6816        /// Deafens yourself (mute both microphone and speakers).
 6817        Deafen,
 6818        /// Leaves the current call.
 6819        LeaveCall,
 6820        /// Shares the current project with collaborators.
 6821        ShareProject,
 6822        /// Shares your screen with collaborators.
 6823        ScreenShare
 6824    ]
 6825);
 6826actions!(
 6827    zed,
 6828    [
 6829        /// Opens the Zed log file.
 6830        OpenLog
 6831    ]
 6832);
 6833
 6834async fn join_channel_internal(
 6835    channel_id: ChannelId,
 6836    app_state: &Arc<AppState>,
 6837    requesting_window: Option<WindowHandle<Workspace>>,
 6838    active_call: &Entity<ActiveCall>,
 6839    cx: &mut AsyncApp,
 6840) -> Result<bool> {
 6841    let (should_prompt, open_room) = active_call.update(cx, |active_call, cx| {
 6842        let Some(room) = active_call.room().map(|room| room.read(cx)) else {
 6843            return (false, None);
 6844        };
 6845
 6846        let already_in_channel = room.channel_id() == Some(channel_id);
 6847        let should_prompt = room.is_sharing_project()
 6848            && !room.remote_participants().is_empty()
 6849            && !already_in_channel;
 6850        let open_room = if already_in_channel {
 6851            active_call.room().cloned()
 6852        } else {
 6853            None
 6854        };
 6855        (should_prompt, open_room)
 6856    })?;
 6857
 6858    if let Some(room) = open_room {
 6859        let task = room.update(cx, |room, cx| {
 6860            if let Some((project, host)) = room.most_active_project(cx) {
 6861                return Some(join_in_room_project(project, host, app_state.clone(), cx));
 6862            }
 6863
 6864            None
 6865        })?;
 6866        if let Some(task) = task {
 6867            task.await?;
 6868        }
 6869        return anyhow::Ok(true);
 6870    }
 6871
 6872    if should_prompt {
 6873        if let Some(workspace) = requesting_window {
 6874            let answer = workspace
 6875                .update(cx, |_, window, cx| {
 6876                    window.prompt(
 6877                        PromptLevel::Warning,
 6878                        "Do you want to switch channels?",
 6879                        Some("Leaving this call will unshare your current project."),
 6880                        &["Yes, Join Channel", "Cancel"],
 6881                        cx,
 6882                    )
 6883                })?
 6884                .await;
 6885
 6886            if answer == Ok(1) {
 6887                return Ok(false);
 6888            }
 6889        } else {
 6890            return Ok(false); // unreachable!() hopefully
 6891        }
 6892    }
 6893
 6894    let client = cx.update(|cx| active_call.read(cx).client())?;
 6895
 6896    let mut client_status = client.status();
 6897
 6898    // this loop will terminate within client::CONNECTION_TIMEOUT seconds.
 6899    'outer: loop {
 6900        let Some(status) = client_status.recv().await else {
 6901            anyhow::bail!("error connecting");
 6902        };
 6903
 6904        match status {
 6905            Status::Connecting
 6906            | Status::Authenticating
 6907            | Status::Authenticated
 6908            | Status::Reconnecting
 6909            | Status::Reauthenticating => continue,
 6910            Status::Connected { .. } => break 'outer,
 6911            Status::SignedOut | Status::AuthenticationError => {
 6912                return Err(ErrorCode::SignedOut.into());
 6913            }
 6914            Status::UpgradeRequired => return Err(ErrorCode::UpgradeRequired.into()),
 6915            Status::ConnectionError | Status::ConnectionLost | Status::ReconnectionError { .. } => {
 6916                return Err(ErrorCode::Disconnected.into());
 6917            }
 6918        }
 6919    }
 6920
 6921    let room = active_call
 6922        .update(cx, |active_call, cx| {
 6923            active_call.join_channel(channel_id, cx)
 6924        })?
 6925        .await?;
 6926
 6927    let Some(room) = room else {
 6928        return anyhow::Ok(true);
 6929    };
 6930
 6931    room.update(cx, |room, _| room.room_update_completed())?
 6932        .await;
 6933
 6934    let task = room.update(cx, |room, cx| {
 6935        if let Some((project, host)) = room.most_active_project(cx) {
 6936            return Some(join_in_room_project(project, host, app_state.clone(), cx));
 6937        }
 6938
 6939        // If you are the first to join a channel, see if you should share your project.
 6940        if room.remote_participants().is_empty()
 6941            && !room.local_participant_is_guest()
 6942            && let Some(workspace) = requesting_window
 6943        {
 6944            let project = workspace.update(cx, |workspace, _, cx| {
 6945                let project = workspace.project.read(cx);
 6946
 6947                if !CallSettings::get_global(cx).share_on_join {
 6948                    return None;
 6949                }
 6950
 6951                if (project.is_local() || project.is_via_ssh())
 6952                    && project.visible_worktrees(cx).any(|tree| {
 6953                        tree.read(cx)
 6954                            .root_entry()
 6955                            .is_some_and(|entry| entry.is_dir())
 6956                    })
 6957                {
 6958                    Some(workspace.project.clone())
 6959                } else {
 6960                    None
 6961                }
 6962            });
 6963            if let Ok(Some(project)) = project {
 6964                return Some(cx.spawn(async move |room, cx| {
 6965                    room.update(cx, |room, cx| room.share_project(project, cx))?
 6966                        .await?;
 6967                    Ok(())
 6968                }));
 6969            }
 6970        }
 6971
 6972        None
 6973    })?;
 6974    if let Some(task) = task {
 6975        task.await?;
 6976        return anyhow::Ok(true);
 6977    }
 6978    anyhow::Ok(false)
 6979}
 6980
 6981pub fn join_channel(
 6982    channel_id: ChannelId,
 6983    app_state: Arc<AppState>,
 6984    requesting_window: Option<WindowHandle<Workspace>>,
 6985    cx: &mut App,
 6986) -> Task<Result<()>> {
 6987    let active_call = ActiveCall::global(cx);
 6988    cx.spawn(async move |cx| {
 6989        let result = join_channel_internal(
 6990            channel_id,
 6991            &app_state,
 6992            requesting_window,
 6993            &active_call,
 6994             cx,
 6995        )
 6996            .await;
 6997
 6998        // join channel succeeded, and opened a window
 6999        if matches!(result, Ok(true)) {
 7000            return anyhow::Ok(());
 7001        }
 7002
 7003        // find an existing workspace to focus and show call controls
 7004        let mut active_window =
 7005            requesting_window.or_else(|| activate_any_workspace_window( cx));
 7006        if active_window.is_none() {
 7007            // no open workspaces, make one to show the error in (blergh)
 7008            let (window_handle, _) = cx
 7009                .update(|cx| {
 7010                    Workspace::new_local(vec![], app_state.clone(), requesting_window, None, cx)
 7011                })?
 7012                .await?;
 7013
 7014            if result.is_ok() {
 7015                cx.update(|cx| {
 7016                    cx.dispatch_action(&OpenChannelNotes);
 7017                }).log_err();
 7018            }
 7019
 7020            active_window = Some(window_handle);
 7021        }
 7022
 7023        if let Err(err) = result {
 7024            log::error!("failed to join channel: {}", err);
 7025            if let Some(active_window) = active_window {
 7026                active_window
 7027                    .update(cx, |_, window, cx| {
 7028                        let detail: SharedString = match err.error_code() {
 7029                            ErrorCode::SignedOut => {
 7030                                "Please sign in to continue.".into()
 7031                            }
 7032                            ErrorCode::UpgradeRequired => {
 7033                                "Your are running an unsupported version of Zed. Please update to continue.".into()
 7034                            }
 7035                            ErrorCode::NoSuchChannel => {
 7036                                "No matching channel was found. Please check the link and try again.".into()
 7037                            }
 7038                            ErrorCode::Forbidden => {
 7039                                "This channel is private, and you do not have access. Please ask someone to add you and try again.".into()
 7040                            }
 7041                            ErrorCode::Disconnected => "Please check your internet connection and try again.".into(),
 7042                            _ => format!("{}\n\nPlease try again.", err).into(),
 7043                        };
 7044                        window.prompt(
 7045                            PromptLevel::Critical,
 7046                            "Failed to join channel",
 7047                            Some(&detail),
 7048                            &["Ok"],
 7049                        cx)
 7050                    })?
 7051                    .await
 7052                    .ok();
 7053            }
 7054        }
 7055
 7056        // return ok, we showed the error to the user.
 7057        anyhow::Ok(())
 7058    })
 7059}
 7060
 7061pub async fn get_any_active_workspace(
 7062    app_state: Arc<AppState>,
 7063    mut cx: AsyncApp,
 7064) -> anyhow::Result<WindowHandle<Workspace>> {
 7065    // find an existing workspace to focus and show call controls
 7066    let active_window = activate_any_workspace_window(&mut cx);
 7067    if active_window.is_none() {
 7068        cx.update(|cx| Workspace::new_local(vec![], app_state.clone(), None, None, cx))?
 7069            .await?;
 7070    }
 7071    activate_any_workspace_window(&mut cx).context("could not open zed")
 7072}
 7073
 7074fn activate_any_workspace_window(cx: &mut AsyncApp) -> Option<WindowHandle<Workspace>> {
 7075    cx.update(|cx| {
 7076        if let Some(workspace_window) = cx
 7077            .active_window()
 7078            .and_then(|window| window.downcast::<Workspace>())
 7079        {
 7080            return Some(workspace_window);
 7081        }
 7082
 7083        for window in cx.windows() {
 7084            if let Some(workspace_window) = window.downcast::<Workspace>() {
 7085                workspace_window
 7086                    .update(cx, |_, window, _| window.activate_window())
 7087                    .ok();
 7088                return Some(workspace_window);
 7089            }
 7090        }
 7091        None
 7092    })
 7093    .ok()
 7094    .flatten()
 7095}
 7096
 7097pub fn local_workspace_windows(cx: &App) -> Vec<WindowHandle<Workspace>> {
 7098    cx.windows()
 7099        .into_iter()
 7100        .filter_map(|window| window.downcast::<Workspace>())
 7101        .filter(|workspace| {
 7102            workspace
 7103                .read(cx)
 7104                .is_ok_and(|workspace| workspace.project.read(cx).is_local())
 7105        })
 7106        .collect()
 7107}
 7108
 7109#[derive(Default)]
 7110pub struct OpenOptions {
 7111    pub visible: Option<OpenVisible>,
 7112    pub focus: Option<bool>,
 7113    pub open_new_workspace: Option<bool>,
 7114    pub replace_window: Option<WindowHandle<Workspace>>,
 7115    pub env: Option<HashMap<String, String>>,
 7116}
 7117
 7118#[allow(clippy::type_complexity)]
 7119pub fn open_paths(
 7120    abs_paths: &[PathBuf],
 7121    app_state: Arc<AppState>,
 7122    open_options: OpenOptions,
 7123    cx: &mut App,
 7124) -> Task<
 7125    anyhow::Result<(
 7126        WindowHandle<Workspace>,
 7127        Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 7128    )>,
 7129> {
 7130    let abs_paths = abs_paths.to_vec();
 7131    let mut existing = None;
 7132    let mut best_match = None;
 7133    let mut open_visible = OpenVisible::All;
 7134
 7135    cx.spawn(async move |cx| {
 7136        if open_options.open_new_workspace != Some(true) {
 7137            let all_paths = abs_paths.iter().map(|path| app_state.fs.metadata(path));
 7138            let all_metadatas = futures::future::join_all(all_paths)
 7139                .await
 7140                .into_iter()
 7141                .filter_map(|result| result.ok().flatten())
 7142                .collect::<Vec<_>>();
 7143
 7144            cx.update(|cx| {
 7145                for window in local_workspace_windows(cx) {
 7146                    if let Ok(workspace) = window.read(cx) {
 7147                        let m = workspace.project.read(cx).visibility_for_paths(
 7148                            &abs_paths,
 7149                            &all_metadatas,
 7150                            open_options.open_new_workspace == None,
 7151                            cx,
 7152                        );
 7153                        if m > best_match {
 7154                            existing = Some(window);
 7155                            best_match = m;
 7156                        } else if best_match.is_none()
 7157                            && open_options.open_new_workspace == Some(false)
 7158                        {
 7159                            existing = Some(window)
 7160                        }
 7161                    }
 7162                }
 7163            })?;
 7164
 7165            if open_options.open_new_workspace.is_none()
 7166                && existing.is_none()
 7167                && all_metadatas.iter().all(|file| !file.is_dir)
 7168            {
 7169                cx.update(|cx| {
 7170                    if let Some(window) = cx
 7171                        .active_window()
 7172                        .and_then(|window| window.downcast::<Workspace>())
 7173                        && let Ok(workspace) = window.read(cx)
 7174                    {
 7175                        let project = workspace.project().read(cx);
 7176                        if project.is_local() && !project.is_via_collab() {
 7177                            existing = Some(window);
 7178                            open_visible = OpenVisible::None;
 7179                            return;
 7180                        }
 7181                    }
 7182                    for window in local_workspace_windows(cx) {
 7183                        if let Ok(workspace) = window.read(cx) {
 7184                            let project = workspace.project().read(cx);
 7185                            if project.is_via_collab() {
 7186                                continue;
 7187                            }
 7188                            existing = Some(window);
 7189                            open_visible = OpenVisible::None;
 7190                            break;
 7191                        }
 7192                    }
 7193                })?;
 7194            }
 7195        }
 7196
 7197        if let Some(existing) = existing {
 7198            let open_task = existing
 7199                .update(cx, |workspace, window, cx| {
 7200                    window.activate_window();
 7201                    workspace.open_paths(
 7202                        abs_paths,
 7203                        OpenOptions {
 7204                            visible: Some(open_visible),
 7205                            ..Default::default()
 7206                        },
 7207                        None,
 7208                        window,
 7209                        cx,
 7210                    )
 7211                })?
 7212                .await;
 7213
 7214            _ = existing.update(cx, |workspace, _, cx| {
 7215                for item in open_task.iter().flatten() {
 7216                    if let Err(e) = item {
 7217                        workspace.show_error(&e, cx);
 7218                    }
 7219                }
 7220            });
 7221
 7222            Ok((existing, open_task))
 7223        } else {
 7224            cx.update(move |cx| {
 7225                Workspace::new_local(
 7226                    abs_paths,
 7227                    app_state.clone(),
 7228                    open_options.replace_window,
 7229                    open_options.env,
 7230                    cx,
 7231                )
 7232            })?
 7233            .await
 7234        }
 7235    })
 7236}
 7237
 7238pub fn open_new(
 7239    open_options: OpenOptions,
 7240    app_state: Arc<AppState>,
 7241    cx: &mut App,
 7242    init: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + 'static + Send,
 7243) -> Task<anyhow::Result<()>> {
 7244    let task = Workspace::new_local(Vec::new(), app_state, None, open_options.env, cx);
 7245    cx.spawn(async move |cx| {
 7246        let (workspace, opened_paths) = task.await?;
 7247        workspace.update(cx, |workspace, window, cx| {
 7248            if opened_paths.is_empty() {
 7249                init(workspace, window, cx)
 7250            }
 7251        })?;
 7252        Ok(())
 7253    })
 7254}
 7255
 7256pub fn create_and_open_local_file(
 7257    path: &'static Path,
 7258    window: &mut Window,
 7259    cx: &mut Context<Workspace>,
 7260    default_content: impl 'static + Send + FnOnce() -> Rope,
 7261) -> Task<Result<Box<dyn ItemHandle>>> {
 7262    cx.spawn_in(window, async move |workspace, cx| {
 7263        let fs = workspace.read_with(cx, |workspace, _| workspace.app_state().fs.clone())?;
 7264        if !fs.is_file(path).await {
 7265            fs.create_file(path, Default::default()).await?;
 7266            fs.save(path, &default_content(), Default::default())
 7267                .await?;
 7268        }
 7269
 7270        let mut items = workspace
 7271            .update_in(cx, |workspace, window, cx| {
 7272                workspace.with_local_workspace(window, cx, |workspace, window, cx| {
 7273                    workspace.open_paths(
 7274                        vec![path.to_path_buf()],
 7275                        OpenOptions {
 7276                            visible: Some(OpenVisible::None),
 7277                            ..Default::default()
 7278                        },
 7279                        None,
 7280                        window,
 7281                        cx,
 7282                    )
 7283                })
 7284            })?
 7285            .await?
 7286            .await;
 7287
 7288        let item = items.pop().flatten();
 7289        item.with_context(|| format!("path {path:?} is not a file"))?
 7290    })
 7291}
 7292
 7293pub fn open_ssh_project_with_new_connection(
 7294    window: WindowHandle<Workspace>,
 7295    connection_options: SshConnectionOptions,
 7296    cancel_rx: oneshot::Receiver<()>,
 7297    delegate: Arc<dyn SshClientDelegate>,
 7298    app_state: Arc<AppState>,
 7299    paths: Vec<PathBuf>,
 7300    cx: &mut App,
 7301) -> Task<Result<()>> {
 7302    cx.spawn(async move |cx| {
 7303        let (workspace_id, serialized_workspace) =
 7304            serialize_ssh_project(connection_options.clone(), paths.clone(), cx).await?;
 7305
 7306        let session = match cx
 7307            .update(|cx| {
 7308                remote::SshRemoteClient::new(
 7309                    ConnectionIdentifier::Workspace(workspace_id.0),
 7310                    connection_options,
 7311                    cancel_rx,
 7312                    delegate,
 7313                    cx,
 7314                )
 7315            })?
 7316            .await?
 7317        {
 7318            Some(result) => result,
 7319            None => return Ok(()),
 7320        };
 7321
 7322        let project = cx.update(|cx| {
 7323            project::Project::ssh(
 7324                session,
 7325                app_state.client.clone(),
 7326                app_state.node_runtime.clone(),
 7327                app_state.user_store.clone(),
 7328                app_state.languages.clone(),
 7329                app_state.fs.clone(),
 7330                cx,
 7331            )
 7332        })?;
 7333
 7334        open_ssh_project_inner(
 7335            project,
 7336            paths,
 7337            workspace_id,
 7338            serialized_workspace,
 7339            app_state,
 7340            window,
 7341            cx,
 7342        )
 7343        .await
 7344    })
 7345}
 7346
 7347pub fn open_ssh_project_with_existing_connection(
 7348    connection_options: SshConnectionOptions,
 7349    project: Entity<Project>,
 7350    paths: Vec<PathBuf>,
 7351    app_state: Arc<AppState>,
 7352    window: WindowHandle<Workspace>,
 7353    cx: &mut AsyncApp,
 7354) -> Task<Result<()>> {
 7355    cx.spawn(async move |cx| {
 7356        let (workspace_id, serialized_workspace) =
 7357            serialize_ssh_project(connection_options.clone(), paths.clone(), cx).await?;
 7358
 7359        open_ssh_project_inner(
 7360            project,
 7361            paths,
 7362            workspace_id,
 7363            serialized_workspace,
 7364            app_state,
 7365            window,
 7366            cx,
 7367        )
 7368        .await
 7369    })
 7370}
 7371
 7372async fn open_ssh_project_inner(
 7373    project: Entity<Project>,
 7374    paths: Vec<PathBuf>,
 7375    workspace_id: WorkspaceId,
 7376    serialized_workspace: Option<SerializedWorkspace>,
 7377    app_state: Arc<AppState>,
 7378    window: WindowHandle<Workspace>,
 7379    cx: &mut AsyncApp,
 7380) -> Result<()> {
 7381    let toolchains = DB.toolchains(workspace_id).await?;
 7382    for (toolchain, worktree_id, path) in toolchains {
 7383        project
 7384            .update(cx, |this, cx| {
 7385                this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 7386            })?
 7387            .await;
 7388    }
 7389    let mut project_paths_to_open = vec![];
 7390    let mut project_path_errors = vec![];
 7391
 7392    for path in paths {
 7393        let result = cx
 7394            .update(|cx| Workspace::project_path_for_path(project.clone(), &path, true, cx))?
 7395            .await;
 7396        match result {
 7397            Ok((_, project_path)) => {
 7398                project_paths_to_open.push((path.clone(), Some(project_path)));
 7399            }
 7400            Err(error) => {
 7401                project_path_errors.push(error);
 7402            }
 7403        };
 7404    }
 7405
 7406    if project_paths_to_open.is_empty() {
 7407        return Err(project_path_errors.pop().context("no paths given")?);
 7408    }
 7409
 7410    if let Some(detach_session_task) = window
 7411        .update(cx, |_workspace, window, cx| {
 7412            cx.spawn_in(window, async move |this, cx| {
 7413                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))
 7414            })
 7415        })
 7416        .ok()
 7417    {
 7418        detach_session_task.await.ok();
 7419    }
 7420
 7421    cx.update_window(window.into(), |_, window, cx| {
 7422        window.replace_root(cx, |window, cx| {
 7423            telemetry::event!("SSH Project Opened");
 7424
 7425            let mut workspace =
 7426                Workspace::new(Some(workspace_id), project, app_state.clone(), window, cx);
 7427            workspace.update_history(cx);
 7428
 7429            if let Some(ref serialized) = serialized_workspace {
 7430                workspace.centered_layout = serialized.centered_layout;
 7431            }
 7432
 7433            workspace
 7434        });
 7435    })?;
 7436
 7437    window
 7438        .update(cx, |_, window, cx| {
 7439            window.activate_window();
 7440            open_items(serialized_workspace, project_paths_to_open, window, cx)
 7441        })?
 7442        .await?;
 7443
 7444    window.update(cx, |workspace, _, cx| {
 7445        for error in project_path_errors {
 7446            if error.error_code() == proto::ErrorCode::DevServerProjectPathDoesNotExist {
 7447                if let Some(path) = error.error_tag("path") {
 7448                    workspace.show_error(&anyhow!("'{path}' does not exist"), cx)
 7449                }
 7450            } else {
 7451                workspace.show_error(&error, cx)
 7452            }
 7453        }
 7454    })?;
 7455
 7456    Ok(())
 7457}
 7458
 7459fn serialize_ssh_project(
 7460    connection_options: SshConnectionOptions,
 7461    paths: Vec<PathBuf>,
 7462    cx: &AsyncApp,
 7463) -> Task<Result<(WorkspaceId, Option<SerializedWorkspace>)>> {
 7464    cx.background_spawn(async move {
 7465        let ssh_connection_id = persistence::DB
 7466            .get_or_create_ssh_connection(
 7467                connection_options.host.clone(),
 7468                connection_options.port,
 7469                connection_options.username.clone(),
 7470            )
 7471            .await?;
 7472
 7473        let serialized_workspace =
 7474            persistence::DB.ssh_workspace_for_roots(&paths, ssh_connection_id);
 7475
 7476        let workspace_id = if let Some(workspace_id) =
 7477            serialized_workspace.as_ref().map(|workspace| workspace.id)
 7478        {
 7479            workspace_id
 7480        } else {
 7481            persistence::DB.next_id().await?
 7482        };
 7483
 7484        Ok((workspace_id, serialized_workspace))
 7485    })
 7486}
 7487
 7488pub fn join_in_room_project(
 7489    project_id: u64,
 7490    follow_user_id: u64,
 7491    app_state: Arc<AppState>,
 7492    cx: &mut App,
 7493) -> Task<Result<()>> {
 7494    let windows = cx.windows();
 7495    cx.spawn(async move |cx| {
 7496        let existing_workspace = windows.into_iter().find_map(|window_handle| {
 7497            window_handle
 7498                .downcast::<Workspace>()
 7499                .and_then(|window_handle| {
 7500                    window_handle
 7501                        .update(cx, |workspace, _window, cx| {
 7502                            if workspace.project().read(cx).remote_id() == Some(project_id) {
 7503                                Some(window_handle)
 7504                            } else {
 7505                                None
 7506                            }
 7507                        })
 7508                        .unwrap_or(None)
 7509                })
 7510        });
 7511
 7512        let workspace = if let Some(existing_workspace) = existing_workspace {
 7513            existing_workspace
 7514        } else {
 7515            let active_call = cx.update(|cx| ActiveCall::global(cx))?;
 7516            let room = active_call
 7517                .read_with(cx, |call, _| call.room().cloned())?
 7518                .context("not in a call")?;
 7519            let project = room
 7520                .update(cx, |room, cx| {
 7521                    room.join_project(
 7522                        project_id,
 7523                        app_state.languages.clone(),
 7524                        app_state.fs.clone(),
 7525                        cx,
 7526                    )
 7527                })?
 7528                .await?;
 7529
 7530            let window_bounds_override = window_bounds_env_override();
 7531            cx.update(|cx| {
 7532                let mut options = (app_state.build_window_options)(None, cx);
 7533                options.window_bounds = window_bounds_override.map(WindowBounds::Windowed);
 7534                cx.open_window(options, |window, cx| {
 7535                    cx.new(|cx| {
 7536                        Workspace::new(Default::default(), project, app_state.clone(), window, cx)
 7537                    })
 7538                })
 7539            })??
 7540        };
 7541
 7542        workspace.update(cx, |workspace, window, cx| {
 7543            cx.activate(true);
 7544            window.activate_window();
 7545
 7546            if let Some(room) = ActiveCall::global(cx).read(cx).room().cloned() {
 7547                let follow_peer_id = room
 7548                    .read(cx)
 7549                    .remote_participants()
 7550                    .iter()
 7551                    .find(|(_, participant)| participant.user.id == follow_user_id)
 7552                    .map(|(_, p)| p.peer_id)
 7553                    .or_else(|| {
 7554                        // If we couldn't follow the given user, follow the host instead.
 7555                        let collaborator = workspace
 7556                            .project()
 7557                            .read(cx)
 7558                            .collaborators()
 7559                            .values()
 7560                            .find(|collaborator| collaborator.is_host)?;
 7561                        Some(collaborator.peer_id)
 7562                    });
 7563
 7564                if let Some(follow_peer_id) = follow_peer_id {
 7565                    workspace.follow(follow_peer_id, window, cx);
 7566                }
 7567            }
 7568        })?;
 7569
 7570        anyhow::Ok(())
 7571    })
 7572}
 7573
 7574pub fn reload(cx: &mut App) {
 7575    let should_confirm = WorkspaceSettings::get_global(cx).confirm_quit;
 7576    let mut workspace_windows = cx
 7577        .windows()
 7578        .into_iter()
 7579        .filter_map(|window| window.downcast::<Workspace>())
 7580        .collect::<Vec<_>>();
 7581
 7582    // If multiple windows have unsaved changes, and need a save prompt,
 7583    // prompt in the active window before switching to a different window.
 7584    workspace_windows.sort_by_key(|window| window.is_active(cx) == Some(false));
 7585
 7586    let mut prompt = None;
 7587    if let (true, Some(window)) = (should_confirm, workspace_windows.first()) {
 7588        prompt = window
 7589            .update(cx, |_, window, cx| {
 7590                window.prompt(
 7591                    PromptLevel::Info,
 7592                    "Are you sure you want to restart?",
 7593                    None,
 7594                    &["Restart", "Cancel"],
 7595                    cx,
 7596                )
 7597            })
 7598            .ok();
 7599    }
 7600
 7601    cx.spawn(async move |cx| {
 7602        if let Some(prompt) = prompt {
 7603            let answer = prompt.await?;
 7604            if answer != 0 {
 7605                return Ok(());
 7606            }
 7607        }
 7608
 7609        // If the user cancels any save prompt, then keep the app open.
 7610        for window in workspace_windows {
 7611            if let Ok(should_close) = window.update(cx, |workspace, window, cx| {
 7612                workspace.prepare_to_close(CloseIntent::Quit, window, cx)
 7613            }) && !should_close.await?
 7614            {
 7615                return Ok(());
 7616            }
 7617        }
 7618        cx.update(|cx| cx.restart())
 7619    })
 7620    .detach_and_log_err(cx);
 7621}
 7622
 7623fn parse_pixel_position_env_var(value: &str) -> Option<Point<Pixels>> {
 7624    let mut parts = value.split(',');
 7625    let x: usize = parts.next()?.parse().ok()?;
 7626    let y: usize = parts.next()?.parse().ok()?;
 7627    Some(point(px(x as f32), px(y as f32)))
 7628}
 7629
 7630fn parse_pixel_size_env_var(value: &str) -> Option<Size<Pixels>> {
 7631    let mut parts = value.split(',');
 7632    let width: usize = parts.next()?.parse().ok()?;
 7633    let height: usize = parts.next()?.parse().ok()?;
 7634    Some(size(px(width as f32), px(height as f32)))
 7635}
 7636
 7637/// Add client-side decorations (rounded corners, shadows, resize handling) when appropriate.
 7638pub fn client_side_decorations(
 7639    element: impl IntoElement,
 7640    window: &mut Window,
 7641    cx: &mut App,
 7642) -> Stateful<Div> {
 7643    const BORDER_SIZE: Pixels = px(1.0);
 7644    let decorations = window.window_decorations();
 7645
 7646    match decorations {
 7647        Decorations::Client { .. } => window.set_client_inset(theme::CLIENT_SIDE_DECORATION_SHADOW),
 7648        Decorations::Server => window.set_client_inset(px(0.0)),
 7649    }
 7650
 7651    struct GlobalResizeEdge(ResizeEdge);
 7652    impl Global for GlobalResizeEdge {}
 7653
 7654    div()
 7655        .id("window-backdrop")
 7656        .bg(transparent_black())
 7657        .map(|div| match decorations {
 7658            Decorations::Server => div,
 7659            Decorations::Client { tiling, .. } => div
 7660                .when(!(tiling.top || tiling.right), |div| {
 7661                    div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7662                })
 7663                .when(!(tiling.top || tiling.left), |div| {
 7664                    div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7665                })
 7666                .when(!(tiling.bottom || tiling.right), |div| {
 7667                    div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7668                })
 7669                .when(!(tiling.bottom || tiling.left), |div| {
 7670                    div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7671                })
 7672                .when(!tiling.top, |div| {
 7673                    div.pt(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7674                })
 7675                .when(!tiling.bottom, |div| {
 7676                    div.pb(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7677                })
 7678                .when(!tiling.left, |div| {
 7679                    div.pl(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7680                })
 7681                .when(!tiling.right, |div| {
 7682                    div.pr(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7683                })
 7684                .on_mouse_move(move |e, window, cx| {
 7685                    let size = window.window_bounds().get_bounds().size;
 7686                    let pos = e.position;
 7687
 7688                    let new_edge =
 7689                        resize_edge(pos, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling);
 7690
 7691                    let edge = cx.try_global::<GlobalResizeEdge>();
 7692                    if new_edge != edge.map(|edge| edge.0) {
 7693                        window
 7694                            .window_handle()
 7695                            .update(cx, |workspace, _, cx| {
 7696                                cx.notify(workspace.entity_id());
 7697                            })
 7698                            .ok();
 7699                    }
 7700                })
 7701                .on_mouse_down(MouseButton::Left, move |e, window, _| {
 7702                    let size = window.window_bounds().get_bounds().size;
 7703                    let pos = e.position;
 7704
 7705                    let edge = match resize_edge(
 7706                        pos,
 7707                        theme::CLIENT_SIDE_DECORATION_SHADOW,
 7708                        size,
 7709                        tiling,
 7710                    ) {
 7711                        Some(value) => value,
 7712                        None => return,
 7713                    };
 7714
 7715                    window.start_window_resize(edge);
 7716                }),
 7717        })
 7718        .size_full()
 7719        .child(
 7720            div()
 7721                .cursor(CursorStyle::Arrow)
 7722                .map(|div| match decorations {
 7723                    Decorations::Server => div,
 7724                    Decorations::Client { tiling } => div
 7725                        .border_color(cx.theme().colors().border)
 7726                        .when(!(tiling.top || tiling.right), |div| {
 7727                            div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7728                        })
 7729                        .when(!(tiling.top || tiling.left), |div| {
 7730                            div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7731                        })
 7732                        .when(!(tiling.bottom || tiling.right), |div| {
 7733                            div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7734                        })
 7735                        .when(!(tiling.bottom || tiling.left), |div| {
 7736                            div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7737                        })
 7738                        .when(!tiling.top, |div| div.border_t(BORDER_SIZE))
 7739                        .when(!tiling.bottom, |div| div.border_b(BORDER_SIZE))
 7740                        .when(!tiling.left, |div| div.border_l(BORDER_SIZE))
 7741                        .when(!tiling.right, |div| div.border_r(BORDER_SIZE))
 7742                        .when(!tiling.is_tiled(), |div| {
 7743                            div.shadow(vec![gpui::BoxShadow {
 7744                                color: Hsla {
 7745                                    h: 0.,
 7746                                    s: 0.,
 7747                                    l: 0.,
 7748                                    a: 0.4,
 7749                                },
 7750                                blur_radius: theme::CLIENT_SIDE_DECORATION_SHADOW / 2.,
 7751                                spread_radius: px(0.),
 7752                                offset: point(px(0.0), px(0.0)),
 7753                            }])
 7754                        }),
 7755                })
 7756                .on_mouse_move(|_e, _, cx| {
 7757                    cx.stop_propagation();
 7758                })
 7759                .size_full()
 7760                .child(element),
 7761        )
 7762        .map(|div| match decorations {
 7763            Decorations::Server => div,
 7764            Decorations::Client { tiling, .. } => div.child(
 7765                canvas(
 7766                    |_bounds, window, _| {
 7767                        window.insert_hitbox(
 7768                            Bounds::new(
 7769                                point(px(0.0), px(0.0)),
 7770                                window.window_bounds().get_bounds().size,
 7771                            ),
 7772                            HitboxBehavior::Normal,
 7773                        )
 7774                    },
 7775                    move |_bounds, hitbox, window, cx| {
 7776                        let mouse = window.mouse_position();
 7777                        let size = window.window_bounds().get_bounds().size;
 7778                        let Some(edge) =
 7779                            resize_edge(mouse, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling)
 7780                        else {
 7781                            return;
 7782                        };
 7783                        cx.set_global(GlobalResizeEdge(edge));
 7784                        window.set_cursor_style(
 7785                            match edge {
 7786                                ResizeEdge::Top | ResizeEdge::Bottom => CursorStyle::ResizeUpDown,
 7787                                ResizeEdge::Left | ResizeEdge::Right => {
 7788                                    CursorStyle::ResizeLeftRight
 7789                                }
 7790                                ResizeEdge::TopLeft | ResizeEdge::BottomRight => {
 7791                                    CursorStyle::ResizeUpLeftDownRight
 7792                                }
 7793                                ResizeEdge::TopRight | ResizeEdge::BottomLeft => {
 7794                                    CursorStyle::ResizeUpRightDownLeft
 7795                                }
 7796                            },
 7797                            &hitbox,
 7798                        );
 7799                    },
 7800                )
 7801                .size_full()
 7802                .absolute(),
 7803            ),
 7804        })
 7805}
 7806
 7807fn resize_edge(
 7808    pos: Point<Pixels>,
 7809    shadow_size: Pixels,
 7810    window_size: Size<Pixels>,
 7811    tiling: Tiling,
 7812) -> Option<ResizeEdge> {
 7813    let bounds = Bounds::new(Point::default(), window_size).inset(shadow_size * 1.5);
 7814    if bounds.contains(&pos) {
 7815        return None;
 7816    }
 7817
 7818    let corner_size = size(shadow_size * 1.5, shadow_size * 1.5);
 7819    let top_left_bounds = Bounds::new(Point::new(px(0.), px(0.)), corner_size);
 7820    if !tiling.top && top_left_bounds.contains(&pos) {
 7821        return Some(ResizeEdge::TopLeft);
 7822    }
 7823
 7824    let top_right_bounds = Bounds::new(
 7825        Point::new(window_size.width - corner_size.width, px(0.)),
 7826        corner_size,
 7827    );
 7828    if !tiling.top && top_right_bounds.contains(&pos) {
 7829        return Some(ResizeEdge::TopRight);
 7830    }
 7831
 7832    let bottom_left_bounds = Bounds::new(
 7833        Point::new(px(0.), window_size.height - corner_size.height),
 7834        corner_size,
 7835    );
 7836    if !tiling.bottom && bottom_left_bounds.contains(&pos) {
 7837        return Some(ResizeEdge::BottomLeft);
 7838    }
 7839
 7840    let bottom_right_bounds = Bounds::new(
 7841        Point::new(
 7842            window_size.width - corner_size.width,
 7843            window_size.height - corner_size.height,
 7844        ),
 7845        corner_size,
 7846    );
 7847    if !tiling.bottom && bottom_right_bounds.contains(&pos) {
 7848        return Some(ResizeEdge::BottomRight);
 7849    }
 7850
 7851    if !tiling.top && pos.y < shadow_size {
 7852        Some(ResizeEdge::Top)
 7853    } else if !tiling.bottom && pos.y > window_size.height - shadow_size {
 7854        Some(ResizeEdge::Bottom)
 7855    } else if !tiling.left && pos.x < shadow_size {
 7856        Some(ResizeEdge::Left)
 7857    } else if !tiling.right && pos.x > window_size.width - shadow_size {
 7858        Some(ResizeEdge::Right)
 7859    } else {
 7860        None
 7861    }
 7862}
 7863
 7864fn join_pane_into_active(
 7865    active_pane: &Entity<Pane>,
 7866    pane: &Entity<Pane>,
 7867    window: &mut Window,
 7868    cx: &mut App,
 7869) {
 7870    if pane == active_pane {
 7871    } else if pane.read(cx).items_len() == 0 {
 7872        pane.update(cx, |_, cx| {
 7873            cx.emit(pane::Event::Remove {
 7874                focus_on_pane: None,
 7875            });
 7876        })
 7877    } else {
 7878        move_all_items(pane, active_pane, window, cx);
 7879    }
 7880}
 7881
 7882fn move_all_items(
 7883    from_pane: &Entity<Pane>,
 7884    to_pane: &Entity<Pane>,
 7885    window: &mut Window,
 7886    cx: &mut App,
 7887) {
 7888    let destination_is_different = from_pane != to_pane;
 7889    let mut moved_items = 0;
 7890    for (item_ix, item_handle) in from_pane
 7891        .read(cx)
 7892        .items()
 7893        .enumerate()
 7894        .map(|(ix, item)| (ix, item.clone()))
 7895        .collect::<Vec<_>>()
 7896    {
 7897        let ix = item_ix - moved_items;
 7898        if destination_is_different {
 7899            // Close item from previous pane
 7900            from_pane.update(cx, |source, cx| {
 7901                source.remove_item_and_focus_on_pane(ix, false, to_pane.clone(), window, cx);
 7902            });
 7903            moved_items += 1;
 7904        }
 7905
 7906        // This automatically removes duplicate items in the pane
 7907        to_pane.update(cx, |destination, cx| {
 7908            destination.add_item(item_handle, true, true, None, window, cx);
 7909            window.focus(&destination.focus_handle(cx))
 7910        });
 7911    }
 7912}
 7913
 7914pub fn move_item(
 7915    source: &Entity<Pane>,
 7916    destination: &Entity<Pane>,
 7917    item_id_to_move: EntityId,
 7918    destination_index: usize,
 7919    activate: bool,
 7920    window: &mut Window,
 7921    cx: &mut App,
 7922) {
 7923    let Some((item_ix, item_handle)) = source
 7924        .read(cx)
 7925        .items()
 7926        .enumerate()
 7927        .find(|(_, item_handle)| item_handle.item_id() == item_id_to_move)
 7928        .map(|(ix, item)| (ix, item.clone()))
 7929    else {
 7930        // Tab was closed during drag
 7931        return;
 7932    };
 7933
 7934    if source != destination {
 7935        // Close item from previous pane
 7936        source.update(cx, |source, cx| {
 7937            source.remove_item_and_focus_on_pane(item_ix, false, destination.clone(), window, cx);
 7938        });
 7939    }
 7940
 7941    // This automatically removes duplicate items in the pane
 7942    destination.update(cx, |destination, cx| {
 7943        destination.add_item_inner(
 7944            item_handle,
 7945            activate,
 7946            activate,
 7947            activate,
 7948            Some(destination_index),
 7949            window,
 7950            cx,
 7951        );
 7952        if activate {
 7953            window.focus(&destination.focus_handle(cx))
 7954        }
 7955    });
 7956}
 7957
 7958pub fn move_active_item(
 7959    source: &Entity<Pane>,
 7960    destination: &Entity<Pane>,
 7961    focus_destination: bool,
 7962    close_if_empty: bool,
 7963    window: &mut Window,
 7964    cx: &mut App,
 7965) {
 7966    if source == destination {
 7967        return;
 7968    }
 7969    let Some(active_item) = source.read(cx).active_item() else {
 7970        return;
 7971    };
 7972    source.update(cx, |source_pane, cx| {
 7973        let item_id = active_item.item_id();
 7974        source_pane.remove_item(item_id, false, close_if_empty, window, cx);
 7975        destination.update(cx, |target_pane, cx| {
 7976            target_pane.add_item(
 7977                active_item,
 7978                focus_destination,
 7979                focus_destination,
 7980                Some(target_pane.items_len()),
 7981                window,
 7982                cx,
 7983            );
 7984        });
 7985    });
 7986}
 7987
 7988pub fn clone_active_item(
 7989    workspace_id: Option<WorkspaceId>,
 7990    source: &Entity<Pane>,
 7991    destination: &Entity<Pane>,
 7992    focus_destination: bool,
 7993    window: &mut Window,
 7994    cx: &mut App,
 7995) {
 7996    if source == destination {
 7997        return;
 7998    }
 7999    let Some(active_item) = source.read(cx).active_item() else {
 8000        return;
 8001    };
 8002    destination.update(cx, |target_pane, cx| {
 8003        let Some(clone) = active_item.clone_on_split(workspace_id, window, cx) else {
 8004            return;
 8005        };
 8006        target_pane.add_item(
 8007            clone,
 8008            focus_destination,
 8009            focus_destination,
 8010            Some(target_pane.items_len()),
 8011            window,
 8012            cx,
 8013        );
 8014    });
 8015}
 8016
 8017#[derive(Debug)]
 8018pub struct WorkspacePosition {
 8019    pub window_bounds: Option<WindowBounds>,
 8020    pub display: Option<Uuid>,
 8021    pub centered_layout: bool,
 8022}
 8023
 8024pub fn ssh_workspace_position_from_db(
 8025    host: String,
 8026    port: Option<u16>,
 8027    user: Option<String>,
 8028    paths_to_open: &[PathBuf],
 8029    cx: &App,
 8030) -> Task<Result<WorkspacePosition>> {
 8031    let paths = paths_to_open.to_vec();
 8032
 8033    cx.background_spawn(async move {
 8034        let ssh_connection_id = persistence::DB
 8035            .get_or_create_ssh_connection(host, port, user)
 8036            .await
 8037            .context("fetching serialized ssh project")?;
 8038        let serialized_workspace =
 8039            persistence::DB.ssh_workspace_for_roots(&paths, ssh_connection_id);
 8040
 8041        let (window_bounds, display) = if let Some(bounds) = window_bounds_env_override() {
 8042            (Some(WindowBounds::Windowed(bounds)), None)
 8043        } else {
 8044            let restorable_bounds = serialized_workspace
 8045                .as_ref()
 8046                .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 8047                .or_else(|| {
 8048                    let (display, window_bounds) = DB.last_window().log_err()?;
 8049                    Some((display?, window_bounds?))
 8050                });
 8051
 8052            if let Some((serialized_display, serialized_status)) = restorable_bounds {
 8053                (Some(serialized_status.0), Some(serialized_display))
 8054            } else {
 8055                (None, None)
 8056            }
 8057        };
 8058
 8059        let centered_layout = serialized_workspace
 8060            .as_ref()
 8061            .map(|w| w.centered_layout)
 8062            .unwrap_or(false);
 8063
 8064        Ok(WorkspacePosition {
 8065            window_bounds,
 8066            display,
 8067            centered_layout,
 8068        })
 8069    })
 8070}
 8071
 8072pub fn with_active_or_new_workspace(
 8073    cx: &mut App,
 8074    f: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send + 'static,
 8075) {
 8076    match cx.active_window().and_then(|w| w.downcast::<Workspace>()) {
 8077        Some(workspace) => {
 8078            cx.defer(move |cx| {
 8079                workspace
 8080                    .update(cx, |workspace, window, cx| f(workspace, window, cx))
 8081                    .log_err();
 8082            });
 8083        }
 8084        None => {
 8085            let app_state = AppState::global(cx);
 8086            if let Some(app_state) = app_state.upgrade() {
 8087                open_new(
 8088                    OpenOptions::default(),
 8089                    app_state,
 8090                    cx,
 8091                    move |workspace, window, cx| f(workspace, window, cx),
 8092                )
 8093                .detach_and_log_err(cx);
 8094            }
 8095        }
 8096    }
 8097}
 8098
 8099#[cfg(test)]
 8100mod tests {
 8101    use std::{cell::RefCell, rc::Rc};
 8102
 8103    use super::*;
 8104    use crate::{
 8105        dock::{PanelEvent, test::TestPanel},
 8106        item::{
 8107            ItemEvent,
 8108            test::{TestItem, TestProjectItem},
 8109        },
 8110    };
 8111    use fs::FakeFs;
 8112    use gpui::{
 8113        DismissEvent, Empty, EventEmitter, FocusHandle, Focusable, Render, TestAppContext,
 8114        UpdateGlobal, VisualTestContext, px,
 8115    };
 8116    use project::{Project, ProjectEntryId};
 8117    use serde_json::json;
 8118    use settings::SettingsStore;
 8119
 8120    #[gpui::test]
 8121    async fn test_tab_disambiguation(cx: &mut TestAppContext) {
 8122        init_test(cx);
 8123
 8124        let fs = FakeFs::new(cx.executor());
 8125        let project = Project::test(fs, [], cx).await;
 8126        let (workspace, cx) =
 8127            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8128
 8129        // Adding an item with no ambiguity renders the tab without detail.
 8130        let item1 = cx.new(|cx| {
 8131            let mut item = TestItem::new(cx);
 8132            item.tab_descriptions = Some(vec!["c", "b1/c", "a/b1/c"]);
 8133            item
 8134        });
 8135        workspace.update_in(cx, |workspace, window, cx| {
 8136            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8137        });
 8138        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(0)));
 8139
 8140        // Adding an item that creates ambiguity increases the level of detail on
 8141        // both tabs.
 8142        let item2 = cx.new_window_entity(|_window, cx| {
 8143            let mut item = TestItem::new(cx);
 8144            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8145            item
 8146        });
 8147        workspace.update_in(cx, |workspace, window, cx| {
 8148            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8149        });
 8150        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8151        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8152
 8153        // Adding an item that creates ambiguity increases the level of detail only
 8154        // on the ambiguous tabs. In this case, the ambiguity can't be resolved so
 8155        // we stop at the highest detail available.
 8156        let item3 = cx.new(|cx| {
 8157            let mut item = TestItem::new(cx);
 8158            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8159            item
 8160        });
 8161        workspace.update_in(cx, |workspace, window, cx| {
 8162            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8163        });
 8164        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8165        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8166        item3.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8167    }
 8168
 8169    #[gpui::test]
 8170    async fn test_tracking_active_path(cx: &mut TestAppContext) {
 8171        init_test(cx);
 8172
 8173        let fs = FakeFs::new(cx.executor());
 8174        fs.insert_tree(
 8175            "/root1",
 8176            json!({
 8177                "one.txt": "",
 8178                "two.txt": "",
 8179            }),
 8180        )
 8181        .await;
 8182        fs.insert_tree(
 8183            "/root2",
 8184            json!({
 8185                "three.txt": "",
 8186            }),
 8187        )
 8188        .await;
 8189
 8190        let project = Project::test(fs, ["root1".as_ref()], cx).await;
 8191        let (workspace, cx) =
 8192            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8193        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8194        let worktree_id = project.update(cx, |project, cx| {
 8195            project.worktrees(cx).next().unwrap().read(cx).id()
 8196        });
 8197
 8198        let item1 = cx.new(|cx| {
 8199            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
 8200        });
 8201        let item2 = cx.new(|cx| {
 8202            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "two.txt", cx)])
 8203        });
 8204
 8205        // Add an item to an empty pane
 8206        workspace.update_in(cx, |workspace, window, cx| {
 8207            workspace.add_item_to_active_pane(Box::new(item1), None, true, window, cx)
 8208        });
 8209        project.update(cx, |project, cx| {
 8210            assert_eq!(
 8211                project.active_entry(),
 8212                project
 8213                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
 8214                    .map(|e| e.id)
 8215            );
 8216        });
 8217        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8218
 8219        // Add a second item to a non-empty pane
 8220        workspace.update_in(cx, |workspace, window, cx| {
 8221            workspace.add_item_to_active_pane(Box::new(item2), None, true, window, cx)
 8222        });
 8223        assert_eq!(cx.window_title().as_deref(), Some("root1 — two.txt"));
 8224        project.update(cx, |project, cx| {
 8225            assert_eq!(
 8226                project.active_entry(),
 8227                project
 8228                    .entry_for_path(&(worktree_id, "two.txt").into(), cx)
 8229                    .map(|e| e.id)
 8230            );
 8231        });
 8232
 8233        // Close the active item
 8234        pane.update_in(cx, |pane, window, cx| {
 8235            pane.close_active_item(&Default::default(), window, cx)
 8236        })
 8237        .await
 8238        .unwrap();
 8239        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8240        project.update(cx, |project, cx| {
 8241            assert_eq!(
 8242                project.active_entry(),
 8243                project
 8244                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
 8245                    .map(|e| e.id)
 8246            );
 8247        });
 8248
 8249        // Add a project folder
 8250        project
 8251            .update(cx, |project, cx| {
 8252                project.find_or_create_worktree("root2", true, cx)
 8253            })
 8254            .await
 8255            .unwrap();
 8256        assert_eq!(cx.window_title().as_deref(), Some("root1, root2 — one.txt"));
 8257
 8258        // Remove a project folder
 8259        project.update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
 8260        assert_eq!(cx.window_title().as_deref(), Some("root2 — one.txt"));
 8261    }
 8262
 8263    #[gpui::test]
 8264    async fn test_close_window(cx: &mut TestAppContext) {
 8265        init_test(cx);
 8266
 8267        let fs = FakeFs::new(cx.executor());
 8268        fs.insert_tree("/root", json!({ "one": "" })).await;
 8269
 8270        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8271        let (workspace, cx) =
 8272            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8273
 8274        // When there are no dirty items, there's nothing to do.
 8275        let item1 = cx.new(TestItem::new);
 8276        workspace.update_in(cx, |w, window, cx| {
 8277            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx)
 8278        });
 8279        let task = workspace.update_in(cx, |w, window, cx| {
 8280            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8281        });
 8282        assert!(task.await.unwrap());
 8283
 8284        // When there are dirty untitled items, prompt to save each one. If the user
 8285        // cancels any prompt, then abort.
 8286        let item2 = cx.new(|cx| TestItem::new(cx).with_dirty(true));
 8287        let item3 = cx.new(|cx| {
 8288            TestItem::new(cx)
 8289                .with_dirty(true)
 8290                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8291        });
 8292        workspace.update_in(cx, |w, window, cx| {
 8293            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8294            w.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8295        });
 8296        let task = workspace.update_in(cx, |w, window, cx| {
 8297            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8298        });
 8299        cx.executor().run_until_parked();
 8300        cx.simulate_prompt_answer("Cancel"); // cancel save all
 8301        cx.executor().run_until_parked();
 8302        assert!(!cx.has_pending_prompt());
 8303        assert!(!task.await.unwrap());
 8304    }
 8305
 8306    #[gpui::test]
 8307    async fn test_close_window_with_serializable_items(cx: &mut TestAppContext) {
 8308        init_test(cx);
 8309
 8310        // Register TestItem as a serializable item
 8311        cx.update(|cx| {
 8312            register_serializable_item::<TestItem>(cx);
 8313        });
 8314
 8315        let fs = FakeFs::new(cx.executor());
 8316        fs.insert_tree("/root", json!({ "one": "" })).await;
 8317
 8318        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8319        let (workspace, cx) =
 8320            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8321
 8322        // When there are dirty untitled items, but they can serialize, then there is no prompt.
 8323        let item1 = cx.new(|cx| {
 8324            TestItem::new(cx)
 8325                .with_dirty(true)
 8326                .with_serialize(|| Some(Task::ready(Ok(()))))
 8327        });
 8328        let item2 = cx.new(|cx| {
 8329            TestItem::new(cx)
 8330                .with_dirty(true)
 8331                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8332                .with_serialize(|| Some(Task::ready(Ok(()))))
 8333        });
 8334        workspace.update_in(cx, |w, window, cx| {
 8335            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8336            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8337        });
 8338        let task = workspace.update_in(cx, |w, window, cx| {
 8339            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8340        });
 8341        assert!(task.await.unwrap());
 8342    }
 8343
 8344    #[gpui::test]
 8345    async fn test_close_pane_items(cx: &mut TestAppContext) {
 8346        init_test(cx);
 8347
 8348        let fs = FakeFs::new(cx.executor());
 8349
 8350        let project = Project::test(fs, None, cx).await;
 8351        let (workspace, cx) =
 8352            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8353
 8354        let item1 = cx.new(|cx| {
 8355            TestItem::new(cx)
 8356                .with_dirty(true)
 8357                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 8358        });
 8359        let item2 = cx.new(|cx| {
 8360            TestItem::new(cx)
 8361                .with_dirty(true)
 8362                .with_conflict(true)
 8363                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 8364        });
 8365        let item3 = cx.new(|cx| {
 8366            TestItem::new(cx)
 8367                .with_dirty(true)
 8368                .with_conflict(true)
 8369                .with_project_items(&[dirty_project_item(3, "3.txt", cx)])
 8370        });
 8371        let item4 = cx.new(|cx| {
 8372            TestItem::new(cx).with_dirty(true).with_project_items(&[{
 8373                let project_item = TestProjectItem::new_untitled(cx);
 8374                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8375                project_item
 8376            }])
 8377        });
 8378        let pane = workspace.update_in(cx, |workspace, window, cx| {
 8379            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8380            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8381            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8382            workspace.add_item_to_active_pane(Box::new(item4.clone()), None, true, window, cx);
 8383            workspace.active_pane().clone()
 8384        });
 8385
 8386        let close_items = pane.update_in(cx, |pane, window, cx| {
 8387            pane.activate_item(1, true, true, window, cx);
 8388            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8389            let item1_id = item1.item_id();
 8390            let item3_id = item3.item_id();
 8391            let item4_id = item4.item_id();
 8392            pane.close_items(window, cx, SaveIntent::Close, move |id| {
 8393                [item1_id, item3_id, item4_id].contains(&id)
 8394            })
 8395        });
 8396        cx.executor().run_until_parked();
 8397
 8398        assert!(cx.has_pending_prompt());
 8399        cx.simulate_prompt_answer("Save all");
 8400
 8401        cx.executor().run_until_parked();
 8402
 8403        // Item 1 is saved. There's a prompt to save item 3.
 8404        pane.update(cx, |pane, cx| {
 8405            assert_eq!(item1.read(cx).save_count, 1);
 8406            assert_eq!(item1.read(cx).save_as_count, 0);
 8407            assert_eq!(item1.read(cx).reload_count, 0);
 8408            assert_eq!(pane.items_len(), 3);
 8409            assert_eq!(pane.active_item().unwrap().item_id(), item3.item_id());
 8410        });
 8411        assert!(cx.has_pending_prompt());
 8412
 8413        // Cancel saving item 3.
 8414        cx.simulate_prompt_answer("Discard");
 8415        cx.executor().run_until_parked();
 8416
 8417        // Item 3 is reloaded. There's a prompt to save item 4.
 8418        pane.update(cx, |pane, cx| {
 8419            assert_eq!(item3.read(cx).save_count, 0);
 8420            assert_eq!(item3.read(cx).save_as_count, 0);
 8421            assert_eq!(item3.read(cx).reload_count, 1);
 8422            assert_eq!(pane.items_len(), 2);
 8423            assert_eq!(pane.active_item().unwrap().item_id(), item4.item_id());
 8424        });
 8425
 8426        // There's a prompt for a path for item 4.
 8427        cx.simulate_new_path_selection(|_| Some(Default::default()));
 8428        close_items.await.unwrap();
 8429
 8430        // The requested items are closed.
 8431        pane.update(cx, |pane, cx| {
 8432            assert_eq!(item4.read(cx).save_count, 0);
 8433            assert_eq!(item4.read(cx).save_as_count, 1);
 8434            assert_eq!(item4.read(cx).reload_count, 0);
 8435            assert_eq!(pane.items_len(), 1);
 8436            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8437        });
 8438    }
 8439
 8440    #[gpui::test]
 8441    async fn test_prompting_to_save_only_on_last_item_for_entry(cx: &mut TestAppContext) {
 8442        init_test(cx);
 8443
 8444        let fs = FakeFs::new(cx.executor());
 8445        let project = Project::test(fs, [], cx).await;
 8446        let (workspace, cx) =
 8447            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8448
 8449        // Create several workspace items with single project entries, and two
 8450        // workspace items with multiple project entries.
 8451        let single_entry_items = (0..=4)
 8452            .map(|project_entry_id| {
 8453                cx.new(|cx| {
 8454                    TestItem::new(cx)
 8455                        .with_dirty(true)
 8456                        .with_project_items(&[dirty_project_item(
 8457                            project_entry_id,
 8458                            &format!("{project_entry_id}.txt"),
 8459                            cx,
 8460                        )])
 8461                })
 8462            })
 8463            .collect::<Vec<_>>();
 8464        let item_2_3 = cx.new(|cx| {
 8465            TestItem::new(cx)
 8466                .with_dirty(true)
 8467                .with_singleton(false)
 8468                .with_project_items(&[
 8469                    single_entry_items[2].read(cx).project_items[0].clone(),
 8470                    single_entry_items[3].read(cx).project_items[0].clone(),
 8471                ])
 8472        });
 8473        let item_3_4 = cx.new(|cx| {
 8474            TestItem::new(cx)
 8475                .with_dirty(true)
 8476                .with_singleton(false)
 8477                .with_project_items(&[
 8478                    single_entry_items[3].read(cx).project_items[0].clone(),
 8479                    single_entry_items[4].read(cx).project_items[0].clone(),
 8480                ])
 8481        });
 8482
 8483        // Create two panes that contain the following project entries:
 8484        //   left pane:
 8485        //     multi-entry items:   (2, 3)
 8486        //     single-entry items:  0, 2, 3, 4
 8487        //   right pane:
 8488        //     single-entry items:  4, 1
 8489        //     multi-entry items:   (3, 4)
 8490        let (left_pane, right_pane) = workspace.update_in(cx, |workspace, window, cx| {
 8491            let left_pane = workspace.active_pane().clone();
 8492            workspace.add_item_to_active_pane(Box::new(item_2_3.clone()), None, true, window, cx);
 8493            workspace.add_item_to_active_pane(
 8494                single_entry_items[0].boxed_clone(),
 8495                None,
 8496                true,
 8497                window,
 8498                cx,
 8499            );
 8500            workspace.add_item_to_active_pane(
 8501                single_entry_items[2].boxed_clone(),
 8502                None,
 8503                true,
 8504                window,
 8505                cx,
 8506            );
 8507            workspace.add_item_to_active_pane(
 8508                single_entry_items[3].boxed_clone(),
 8509                None,
 8510                true,
 8511                window,
 8512                cx,
 8513            );
 8514            workspace.add_item_to_active_pane(
 8515                single_entry_items[4].boxed_clone(),
 8516                None,
 8517                true,
 8518                window,
 8519                cx,
 8520            );
 8521
 8522            let right_pane = workspace
 8523                .split_and_clone(left_pane.clone(), SplitDirection::Right, window, cx)
 8524                .unwrap();
 8525
 8526            right_pane.update(cx, |pane, cx| {
 8527                pane.add_item(
 8528                    single_entry_items[1].boxed_clone(),
 8529                    true,
 8530                    true,
 8531                    None,
 8532                    window,
 8533                    cx,
 8534                );
 8535                pane.add_item(Box::new(item_3_4.clone()), true, true, None, window, cx);
 8536            });
 8537
 8538            (left_pane, right_pane)
 8539        });
 8540
 8541        cx.focus(&right_pane);
 8542
 8543        let mut close = right_pane.update_in(cx, |pane, window, cx| {
 8544            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8545                .unwrap()
 8546        });
 8547        cx.executor().run_until_parked();
 8548
 8549        let msg = cx.pending_prompt().unwrap().0;
 8550        assert!(msg.contains("1.txt"));
 8551        assert!(!msg.contains("2.txt"));
 8552        assert!(!msg.contains("3.txt"));
 8553        assert!(!msg.contains("4.txt"));
 8554
 8555        cx.simulate_prompt_answer("Cancel");
 8556        close.await;
 8557
 8558        left_pane
 8559            .update_in(cx, |left_pane, window, cx| {
 8560                left_pane.close_item_by_id(
 8561                    single_entry_items[3].entity_id(),
 8562                    SaveIntent::Skip,
 8563                    window,
 8564                    cx,
 8565                )
 8566            })
 8567            .await
 8568            .unwrap();
 8569
 8570        close = right_pane.update_in(cx, |pane, window, cx| {
 8571            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8572                .unwrap()
 8573        });
 8574        cx.executor().run_until_parked();
 8575
 8576        let details = cx.pending_prompt().unwrap().1;
 8577        assert!(details.contains("1.txt"));
 8578        assert!(!details.contains("2.txt"));
 8579        assert!(details.contains("3.txt"));
 8580        // ideally this assertion could be made, but today we can only
 8581        // save whole items not project items, so the orphaned item 3 causes
 8582        // 4 to be saved too.
 8583        // assert!(!details.contains("4.txt"));
 8584
 8585        cx.simulate_prompt_answer("Save all");
 8586
 8587        cx.executor().run_until_parked();
 8588        close.await;
 8589        right_pane.read_with(cx, |pane, _| {
 8590            assert_eq!(pane.items_len(), 0);
 8591        });
 8592    }
 8593
 8594    #[gpui::test]
 8595    async fn test_autosave(cx: &mut gpui::TestAppContext) {
 8596        init_test(cx);
 8597
 8598        let fs = FakeFs::new(cx.executor());
 8599        let project = Project::test(fs, [], cx).await;
 8600        let (workspace, cx) =
 8601            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8602        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8603
 8604        let item = cx.new(|cx| {
 8605            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8606        });
 8607        let item_id = item.entity_id();
 8608        workspace.update_in(cx, |workspace, window, cx| {
 8609            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8610        });
 8611
 8612        // Autosave on window change.
 8613        item.update(cx, |item, cx| {
 8614            SettingsStore::update_global(cx, |settings, cx| {
 8615                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8616                    settings.autosave = Some(AutosaveSetting::OnWindowChange);
 8617                })
 8618            });
 8619            item.is_dirty = true;
 8620        });
 8621
 8622        // Deactivating the window saves the file.
 8623        cx.deactivate_window();
 8624        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8625
 8626        // Re-activating the window doesn't save the file.
 8627        cx.update(|window, _| window.activate_window());
 8628        cx.executor().run_until_parked();
 8629        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8630
 8631        // Autosave on focus change.
 8632        item.update_in(cx, |item, window, cx| {
 8633            cx.focus_self(window);
 8634            SettingsStore::update_global(cx, |settings, cx| {
 8635                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8636                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
 8637                })
 8638            });
 8639            item.is_dirty = true;
 8640        });
 8641
 8642        // Blurring the item saves the file.
 8643        item.update_in(cx, |_, window, _| window.blur());
 8644        cx.executor().run_until_parked();
 8645        item.read_with(cx, |item, _| assert_eq!(item.save_count, 2));
 8646
 8647        // Deactivating the window still saves the file.
 8648        item.update_in(cx, |item, window, cx| {
 8649            cx.focus_self(window);
 8650            item.is_dirty = true;
 8651        });
 8652        cx.deactivate_window();
 8653        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
 8654
 8655        // Autosave after delay.
 8656        item.update(cx, |item, cx| {
 8657            SettingsStore::update_global(cx, |settings, cx| {
 8658                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8659                    settings.autosave = Some(AutosaveSetting::AfterDelay { milliseconds: 500 });
 8660                })
 8661            });
 8662            item.is_dirty = true;
 8663            cx.emit(ItemEvent::Edit);
 8664        });
 8665
 8666        // Delay hasn't fully expired, so the file is still dirty and unsaved.
 8667        cx.executor().advance_clock(Duration::from_millis(250));
 8668        item.read_with(cx, |item, _| assert_eq!(item.save_count, 3));
 8669
 8670        // After delay expires, the file is saved.
 8671        cx.executor().advance_clock(Duration::from_millis(250));
 8672        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
 8673
 8674        // Autosave on focus change, ensuring closing the tab counts as such.
 8675        item.update(cx, |item, cx| {
 8676            SettingsStore::update_global(cx, |settings, cx| {
 8677                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8678                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
 8679                })
 8680            });
 8681            item.is_dirty = true;
 8682            for project_item in &mut item.project_items {
 8683                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8684            }
 8685        });
 8686
 8687        pane.update_in(cx, |pane, window, cx| {
 8688            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8689        })
 8690        .await
 8691        .unwrap();
 8692        assert!(!cx.has_pending_prompt());
 8693        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8694
 8695        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
 8696        workspace.update_in(cx, |workspace, window, cx| {
 8697            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8698        });
 8699        item.update_in(cx, |item, window, cx| {
 8700            item.project_items[0].update(cx, |item, _| {
 8701                item.entry_id = None;
 8702            });
 8703            item.is_dirty = true;
 8704            window.blur();
 8705        });
 8706        cx.run_until_parked();
 8707        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8708
 8709        // Ensure autosave is prevented for deleted files also when closing the buffer.
 8710        let _close_items = pane.update_in(cx, |pane, window, cx| {
 8711            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8712        });
 8713        cx.run_until_parked();
 8714        assert!(cx.has_pending_prompt());
 8715        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8716    }
 8717
 8718    #[gpui::test]
 8719    async fn test_pane_navigation(cx: &mut gpui::TestAppContext) {
 8720        init_test(cx);
 8721
 8722        let fs = FakeFs::new(cx.executor());
 8723
 8724        let project = Project::test(fs, [], cx).await;
 8725        let (workspace, cx) =
 8726            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8727
 8728        let item = cx.new(|cx| {
 8729            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8730        });
 8731        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8732        let toolbar = pane.read_with(cx, |pane, _| pane.toolbar().clone());
 8733        let toolbar_notify_count = Rc::new(RefCell::new(0));
 8734
 8735        workspace.update_in(cx, |workspace, window, cx| {
 8736            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8737            let toolbar_notification_count = toolbar_notify_count.clone();
 8738            cx.observe_in(&toolbar, window, move |_, _, _, _| {
 8739                *toolbar_notification_count.borrow_mut() += 1
 8740            })
 8741            .detach();
 8742        });
 8743
 8744        pane.read_with(cx, |pane, _| {
 8745            assert!(!pane.can_navigate_backward());
 8746            assert!(!pane.can_navigate_forward());
 8747        });
 8748
 8749        item.update_in(cx, |item, _, cx| {
 8750            item.set_state("one".to_string(), cx);
 8751        });
 8752
 8753        // Toolbar must be notified to re-render the navigation buttons
 8754        assert_eq!(*toolbar_notify_count.borrow(), 1);
 8755
 8756        pane.read_with(cx, |pane, _| {
 8757            assert!(pane.can_navigate_backward());
 8758            assert!(!pane.can_navigate_forward());
 8759        });
 8760
 8761        workspace
 8762            .update_in(cx, |workspace, window, cx| {
 8763                workspace.go_back(pane.downgrade(), window, cx)
 8764            })
 8765            .await
 8766            .unwrap();
 8767
 8768        assert_eq!(*toolbar_notify_count.borrow(), 2);
 8769        pane.read_with(cx, |pane, _| {
 8770            assert!(!pane.can_navigate_backward());
 8771            assert!(pane.can_navigate_forward());
 8772        });
 8773    }
 8774
 8775    #[gpui::test]
 8776    async fn test_toggle_docks_and_panels(cx: &mut gpui::TestAppContext) {
 8777        init_test(cx);
 8778        let fs = FakeFs::new(cx.executor());
 8779
 8780        let project = Project::test(fs, [], cx).await;
 8781        let (workspace, cx) =
 8782            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8783
 8784        let panel = workspace.update_in(cx, |workspace, window, cx| {
 8785            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 8786            workspace.add_panel(panel.clone(), window, cx);
 8787
 8788            workspace
 8789                .right_dock()
 8790                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
 8791
 8792            panel
 8793        });
 8794
 8795        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8796        pane.update_in(cx, |pane, window, cx| {
 8797            let item = cx.new(TestItem::new);
 8798            pane.add_item(Box::new(item), true, true, None, window, cx);
 8799        });
 8800
 8801        // Transfer focus from center to panel
 8802        workspace.update_in(cx, |workspace, window, cx| {
 8803            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8804        });
 8805
 8806        workspace.update_in(cx, |workspace, window, cx| {
 8807            assert!(workspace.right_dock().read(cx).is_open());
 8808            assert!(!panel.is_zoomed(window, cx));
 8809            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8810        });
 8811
 8812        // Transfer focus from panel to center
 8813        workspace.update_in(cx, |workspace, window, cx| {
 8814            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8815        });
 8816
 8817        workspace.update_in(cx, |workspace, window, cx| {
 8818            assert!(workspace.right_dock().read(cx).is_open());
 8819            assert!(!panel.is_zoomed(window, cx));
 8820            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8821        });
 8822
 8823        // Close the dock
 8824        workspace.update_in(cx, |workspace, window, cx| {
 8825            workspace.toggle_dock(DockPosition::Right, window, cx);
 8826        });
 8827
 8828        workspace.update_in(cx, |workspace, window, cx| {
 8829            assert!(!workspace.right_dock().read(cx).is_open());
 8830            assert!(!panel.is_zoomed(window, cx));
 8831            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8832        });
 8833
 8834        // Open the dock
 8835        workspace.update_in(cx, |workspace, window, cx| {
 8836            workspace.toggle_dock(DockPosition::Right, window, cx);
 8837        });
 8838
 8839        workspace.update_in(cx, |workspace, window, cx| {
 8840            assert!(workspace.right_dock().read(cx).is_open());
 8841            assert!(!panel.is_zoomed(window, cx));
 8842            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8843        });
 8844
 8845        // Focus and zoom panel
 8846        panel.update_in(cx, |panel, window, cx| {
 8847            cx.focus_self(window);
 8848            panel.set_zoomed(true, 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        // Transfer focus to the center closes the dock
 8858        workspace.update_in(cx, |workspace, window, cx| {
 8859            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8860        });
 8861
 8862        workspace.update_in(cx, |workspace, window, cx| {
 8863            assert!(!workspace.right_dock().read(cx).is_open());
 8864            assert!(panel.is_zoomed(window, cx));
 8865            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8866        });
 8867
 8868        // Transferring focus back to the panel keeps it zoomed
 8869        workspace.update_in(cx, |workspace, window, cx| {
 8870            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8871        });
 8872
 8873        workspace.update_in(cx, |workspace, window, cx| {
 8874            assert!(workspace.right_dock().read(cx).is_open());
 8875            assert!(panel.is_zoomed(window, cx));
 8876            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8877        });
 8878
 8879        // Close the dock while it is zoomed
 8880        workspace.update_in(cx, |workspace, window, cx| {
 8881            workspace.toggle_dock(DockPosition::Right, window, cx)
 8882        });
 8883
 8884        workspace.update_in(cx, |workspace, window, cx| {
 8885            assert!(!workspace.right_dock().read(cx).is_open());
 8886            assert!(panel.is_zoomed(window, cx));
 8887            assert!(workspace.zoomed.is_none());
 8888            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8889        });
 8890
 8891        // Opening the dock, when it's zoomed, retains focus
 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_some());
 8900            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8901        });
 8902
 8903        // Unzoom and close the panel, zoom the active pane.
 8904        panel.update_in(cx, |panel, window, cx| panel.set_zoomed(false, window, cx));
 8905        workspace.update_in(cx, |workspace, window, cx| {
 8906            workspace.toggle_dock(DockPosition::Right, window, cx)
 8907        });
 8908        pane.update_in(cx, |pane, window, cx| {
 8909            pane.toggle_zoom(&Default::default(), window, cx)
 8910        });
 8911
 8912        // Opening a dock unzooms the pane.
 8913        workspace.update_in(cx, |workspace, window, cx| {
 8914            workspace.toggle_dock(DockPosition::Right, window, cx)
 8915        });
 8916        workspace.update_in(cx, |workspace, window, cx| {
 8917            let pane = pane.read(cx);
 8918            assert!(!pane.is_zoomed());
 8919            assert!(!pane.focus_handle(cx).is_focused(window));
 8920            assert!(workspace.right_dock().read(cx).is_open());
 8921            assert!(workspace.zoomed.is_none());
 8922        });
 8923    }
 8924
 8925    #[gpui::test]
 8926    async fn test_join_pane_into_next(cx: &mut gpui::TestAppContext) {
 8927        init_test(cx);
 8928
 8929        let fs = FakeFs::new(cx.executor());
 8930
 8931        let project = Project::test(fs, None, cx).await;
 8932        let (workspace, cx) =
 8933            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8934
 8935        // Let's arrange the panes like this:
 8936        //
 8937        // +-----------------------+
 8938        // |         top           |
 8939        // +------+--------+-------+
 8940        // | left | center | right |
 8941        // +------+--------+-------+
 8942        // |        bottom         |
 8943        // +-----------------------+
 8944
 8945        let top_item = cx.new(|cx| {
 8946            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "top.txt", cx)])
 8947        });
 8948        let bottom_item = cx.new(|cx| {
 8949            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "bottom.txt", cx)])
 8950        });
 8951        let left_item = cx.new(|cx| {
 8952            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "left.txt", cx)])
 8953        });
 8954        let right_item = cx.new(|cx| {
 8955            TestItem::new(cx).with_project_items(&[TestProjectItem::new(4, "right.txt", cx)])
 8956        });
 8957        let center_item = cx.new(|cx| {
 8958            TestItem::new(cx).with_project_items(&[TestProjectItem::new(5, "center.txt", cx)])
 8959        });
 8960
 8961        let top_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 8962            let top_pane_id = workspace.active_pane().entity_id();
 8963            workspace.add_item_to_active_pane(Box::new(top_item.clone()), None, false, window, cx);
 8964            workspace.split_pane(
 8965                workspace.active_pane().clone(),
 8966                SplitDirection::Down,
 8967                window,
 8968                cx,
 8969            );
 8970            top_pane_id
 8971        });
 8972        let bottom_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 8973            let bottom_pane_id = workspace.active_pane().entity_id();
 8974            workspace.add_item_to_active_pane(
 8975                Box::new(bottom_item.clone()),
 8976                None,
 8977                false,
 8978                window,
 8979                cx,
 8980            );
 8981            workspace.split_pane(
 8982                workspace.active_pane().clone(),
 8983                SplitDirection::Up,
 8984                window,
 8985                cx,
 8986            );
 8987            bottom_pane_id
 8988        });
 8989        let left_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 8990            let left_pane_id = workspace.active_pane().entity_id();
 8991            workspace.add_item_to_active_pane(Box::new(left_item.clone()), None, false, window, cx);
 8992            workspace.split_pane(
 8993                workspace.active_pane().clone(),
 8994                SplitDirection::Right,
 8995                window,
 8996                cx,
 8997            );
 8998            left_pane_id
 8999        });
 9000        let right_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9001            let right_pane_id = workspace.active_pane().entity_id();
 9002            workspace.add_item_to_active_pane(
 9003                Box::new(right_item.clone()),
 9004                None,
 9005                false,
 9006                window,
 9007                cx,
 9008            );
 9009            workspace.split_pane(
 9010                workspace.active_pane().clone(),
 9011                SplitDirection::Left,
 9012                window,
 9013                cx,
 9014            );
 9015            right_pane_id
 9016        });
 9017        let center_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9018            let center_pane_id = workspace.active_pane().entity_id();
 9019            workspace.add_item_to_active_pane(
 9020                Box::new(center_item.clone()),
 9021                None,
 9022                false,
 9023                window,
 9024                cx,
 9025            );
 9026            center_pane_id
 9027        });
 9028        cx.executor().run_until_parked();
 9029
 9030        workspace.update_in(cx, |workspace, window, cx| {
 9031            assert_eq!(center_pane_id, workspace.active_pane().entity_id());
 9032
 9033            // Join into next from center pane into right
 9034            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9035        });
 9036
 9037        workspace.update_in(cx, |workspace, window, cx| {
 9038            let active_pane = workspace.active_pane();
 9039            assert_eq!(right_pane_id, active_pane.entity_id());
 9040            assert_eq!(2, active_pane.read(cx).items_len());
 9041            let item_ids_in_pane =
 9042                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9043            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9044            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9045
 9046            // Join into next from right pane into bottom
 9047            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9048        });
 9049
 9050        workspace.update_in(cx, |workspace, window, cx| {
 9051            let active_pane = workspace.active_pane();
 9052            assert_eq!(bottom_pane_id, active_pane.entity_id());
 9053            assert_eq!(3, active_pane.read(cx).items_len());
 9054            let item_ids_in_pane =
 9055                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9056            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9057            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9058            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9059
 9060            // Join into next from bottom pane into left
 9061            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9062        });
 9063
 9064        workspace.update_in(cx, |workspace, window, cx| {
 9065            let active_pane = workspace.active_pane();
 9066            assert_eq!(left_pane_id, active_pane.entity_id());
 9067            assert_eq!(4, active_pane.read(cx).items_len());
 9068            let item_ids_in_pane =
 9069                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9070            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9071            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9072            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9073            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9074
 9075            // Join into next from left pane into top
 9076            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9077        });
 9078
 9079        workspace.update_in(cx, |workspace, window, cx| {
 9080            let active_pane = workspace.active_pane();
 9081            assert_eq!(top_pane_id, active_pane.entity_id());
 9082            assert_eq!(5, active_pane.read(cx).items_len());
 9083            let item_ids_in_pane =
 9084                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9085            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9086            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9087            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9088            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9089            assert!(item_ids_in_pane.contains(&top_item.item_id()));
 9090
 9091            // Single pane left: no-op
 9092            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx)
 9093        });
 9094
 9095        workspace.update(cx, |workspace, _cx| {
 9096            let active_pane = workspace.active_pane();
 9097            assert_eq!(top_pane_id, active_pane.entity_id());
 9098        });
 9099    }
 9100
 9101    fn add_an_item_to_active_pane(
 9102        cx: &mut VisualTestContext,
 9103        workspace: &Entity<Workspace>,
 9104        item_id: u64,
 9105    ) -> Entity<TestItem> {
 9106        let item = cx.new(|cx| {
 9107            TestItem::new(cx).with_project_items(&[TestProjectItem::new(
 9108                item_id,
 9109                "item{item_id}.txt",
 9110                cx,
 9111            )])
 9112        });
 9113        workspace.update_in(cx, |workspace, window, cx| {
 9114            workspace.add_item_to_active_pane(Box::new(item.clone()), None, false, window, cx);
 9115        });
 9116        item
 9117    }
 9118
 9119    fn split_pane(cx: &mut VisualTestContext, workspace: &Entity<Workspace>) -> Entity<Pane> {
 9120        workspace.update_in(cx, |workspace, window, cx| {
 9121            workspace.split_pane(
 9122                workspace.active_pane().clone(),
 9123                SplitDirection::Right,
 9124                window,
 9125                cx,
 9126            )
 9127        })
 9128    }
 9129
 9130    #[gpui::test]
 9131    async fn test_join_all_panes(cx: &mut gpui::TestAppContext) {
 9132        init_test(cx);
 9133        let fs = FakeFs::new(cx.executor());
 9134        let project = Project::test(fs, None, cx).await;
 9135        let (workspace, cx) =
 9136            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9137
 9138        add_an_item_to_active_pane(cx, &workspace, 1);
 9139        split_pane(cx, &workspace);
 9140        add_an_item_to_active_pane(cx, &workspace, 2);
 9141        split_pane(cx, &workspace); // empty pane
 9142        split_pane(cx, &workspace);
 9143        let last_item = add_an_item_to_active_pane(cx, &workspace, 3);
 9144
 9145        cx.executor().run_until_parked();
 9146
 9147        workspace.update(cx, |workspace, cx| {
 9148            let num_panes = workspace.panes().len();
 9149            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9150            let active_item = workspace
 9151                .active_pane()
 9152                .read(cx)
 9153                .active_item()
 9154                .expect("item is in focus");
 9155
 9156            assert_eq!(num_panes, 4);
 9157            assert_eq!(num_items_in_current_pane, 1);
 9158            assert_eq!(active_item.item_id(), last_item.item_id());
 9159        });
 9160
 9161        workspace.update_in(cx, |workspace, window, cx| {
 9162            workspace.join_all_panes(window, cx);
 9163        });
 9164
 9165        workspace.update(cx, |workspace, cx| {
 9166            let num_panes = workspace.panes().len();
 9167            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9168            let active_item = workspace
 9169                .active_pane()
 9170                .read(cx)
 9171                .active_item()
 9172                .expect("item is in focus");
 9173
 9174            assert_eq!(num_panes, 1);
 9175            assert_eq!(num_items_in_current_pane, 3);
 9176            assert_eq!(active_item.item_id(), last_item.item_id());
 9177        });
 9178    }
 9179    struct TestModal(FocusHandle);
 9180
 9181    impl TestModal {
 9182        fn new(_: &mut Window, cx: &mut Context<Self>) -> Self {
 9183            Self(cx.focus_handle())
 9184        }
 9185    }
 9186
 9187    impl EventEmitter<DismissEvent> for TestModal {}
 9188
 9189    impl Focusable for TestModal {
 9190        fn focus_handle(&self, _cx: &App) -> FocusHandle {
 9191            self.0.clone()
 9192        }
 9193    }
 9194
 9195    impl ModalView for TestModal {}
 9196
 9197    impl Render for TestModal {
 9198        fn render(
 9199            &mut self,
 9200            _window: &mut Window,
 9201            _cx: &mut Context<TestModal>,
 9202        ) -> impl IntoElement {
 9203            div().track_focus(&self.0)
 9204        }
 9205    }
 9206
 9207    #[gpui::test]
 9208    async fn test_panels(cx: &mut gpui::TestAppContext) {
 9209        init_test(cx);
 9210        let fs = FakeFs::new(cx.executor());
 9211
 9212        let project = Project::test(fs, [], cx).await;
 9213        let (workspace, cx) =
 9214            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9215
 9216        let (panel_1, panel_2) = workspace.update_in(cx, |workspace, window, cx| {
 9217            let panel_1 = cx.new(|cx| TestPanel::new(DockPosition::Left, cx));
 9218            workspace.add_panel(panel_1.clone(), window, cx);
 9219            workspace.toggle_dock(DockPosition::Left, window, cx);
 9220            let panel_2 = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 9221            workspace.add_panel(panel_2.clone(), window, cx);
 9222            workspace.toggle_dock(DockPosition::Right, window, cx);
 9223
 9224            let left_dock = workspace.left_dock();
 9225            assert_eq!(
 9226                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9227                panel_1.panel_id()
 9228            );
 9229            assert_eq!(
 9230                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9231                panel_1.size(window, cx)
 9232            );
 9233
 9234            left_dock.update(cx, |left_dock, cx| {
 9235                left_dock.resize_active_panel(Some(px(1337.)), window, cx)
 9236            });
 9237            assert_eq!(
 9238                workspace
 9239                    .right_dock()
 9240                    .read(cx)
 9241                    .visible_panel()
 9242                    .unwrap()
 9243                    .panel_id(),
 9244                panel_2.panel_id(),
 9245            );
 9246
 9247            (panel_1, panel_2)
 9248        });
 9249
 9250        // Move panel_1 to the right
 9251        panel_1.update_in(cx, |panel_1, window, cx| {
 9252            panel_1.set_position(DockPosition::Right, window, cx)
 9253        });
 9254
 9255        workspace.update_in(cx, |workspace, window, cx| {
 9256            // Since panel_1 was visible on the left, it should now be visible now that it's been moved to the right.
 9257            // Since it was the only panel on the left, the left dock should now be closed.
 9258            assert!(!workspace.left_dock().read(cx).is_open());
 9259            assert!(workspace.left_dock().read(cx).visible_panel().is_none());
 9260            let right_dock = workspace.right_dock();
 9261            assert_eq!(
 9262                right_dock.read(cx).visible_panel().unwrap().panel_id(),
 9263                panel_1.panel_id()
 9264            );
 9265            assert_eq!(
 9266                right_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9267                px(1337.)
 9268            );
 9269
 9270            // Now we move panel_2 to the left
 9271            panel_2.set_position(DockPosition::Left, window, cx);
 9272        });
 9273
 9274        workspace.update(cx, |workspace, cx| {
 9275            // Since panel_2 was not visible on the right, we don't open the left dock.
 9276            assert!(!workspace.left_dock().read(cx).is_open());
 9277            // And the right dock is unaffected in its displaying of panel_1
 9278            assert!(workspace.right_dock().read(cx).is_open());
 9279            assert_eq!(
 9280                workspace
 9281                    .right_dock()
 9282                    .read(cx)
 9283                    .visible_panel()
 9284                    .unwrap()
 9285                    .panel_id(),
 9286                panel_1.panel_id(),
 9287            );
 9288        });
 9289
 9290        // Move panel_1 back to the left
 9291        panel_1.update_in(cx, |panel_1, window, cx| {
 9292            panel_1.set_position(DockPosition::Left, window, cx)
 9293        });
 9294
 9295        workspace.update_in(cx, |workspace, window, cx| {
 9296            // Since panel_1 was visible on the right, we open the left dock and make panel_1 active.
 9297            let left_dock = workspace.left_dock();
 9298            assert!(left_dock.read(cx).is_open());
 9299            assert_eq!(
 9300                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9301                panel_1.panel_id()
 9302            );
 9303            assert_eq!(
 9304                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9305                px(1337.)
 9306            );
 9307            // And the right dock should be closed as it no longer has any panels.
 9308            assert!(!workspace.right_dock().read(cx).is_open());
 9309
 9310            // Now we move panel_1 to the bottom
 9311            panel_1.set_position(DockPosition::Bottom, window, cx);
 9312        });
 9313
 9314        workspace.update_in(cx, |workspace, window, cx| {
 9315            // Since panel_1 was visible on the left, we close the left dock.
 9316            assert!(!workspace.left_dock().read(cx).is_open());
 9317            // The bottom dock is sized based on the panel's default size,
 9318            // since the panel orientation changed from vertical to horizontal.
 9319            let bottom_dock = workspace.bottom_dock();
 9320            assert_eq!(
 9321                bottom_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9322                panel_1.size(window, cx),
 9323            );
 9324            // Close bottom dock and move panel_1 back to the left.
 9325            bottom_dock.update(cx, |bottom_dock, cx| {
 9326                bottom_dock.set_open(false, window, cx)
 9327            });
 9328            panel_1.set_position(DockPosition::Left, window, cx);
 9329        });
 9330
 9331        // Emit activated event on panel 1
 9332        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Activate));
 9333
 9334        // Now the left dock is open and panel_1 is active and focused.
 9335        workspace.update_in(cx, |workspace, window, cx| {
 9336            let left_dock = workspace.left_dock();
 9337            assert!(left_dock.read(cx).is_open());
 9338            assert_eq!(
 9339                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9340                panel_1.panel_id(),
 9341            );
 9342            assert!(panel_1.focus_handle(cx).is_focused(window));
 9343        });
 9344
 9345        // Emit closed event on panel 2, which is not active
 9346        panel_2.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9347
 9348        // Wo don't close the left dock, because panel_2 wasn't the active panel
 9349        workspace.update(cx, |workspace, cx| {
 9350            let left_dock = workspace.left_dock();
 9351            assert!(left_dock.read(cx).is_open());
 9352            assert_eq!(
 9353                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9354                panel_1.panel_id(),
 9355            );
 9356        });
 9357
 9358        // Emitting a ZoomIn event shows the panel as zoomed.
 9359        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomIn));
 9360        workspace.read_with(cx, |workspace, _| {
 9361            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9362            assert_eq!(workspace.zoomed_position, Some(DockPosition::Left));
 9363        });
 9364
 9365        // Move panel to another dock while it is zoomed
 9366        panel_1.update_in(cx, |panel, window, cx| {
 9367            panel.set_position(DockPosition::Right, window, cx)
 9368        });
 9369        workspace.read_with(cx, |workspace, _| {
 9370            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9371
 9372            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9373        });
 9374
 9375        // This is a helper for getting a:
 9376        // - valid focus on an element,
 9377        // - that isn't a part of the panes and panels system of the Workspace,
 9378        // - and doesn't trigger the 'on_focus_lost' API.
 9379        let focus_other_view = {
 9380            let workspace = workspace.clone();
 9381            move |cx: &mut VisualTestContext| {
 9382                workspace.update_in(cx, |workspace, window, cx| {
 9383                    if workspace.active_modal::<TestModal>(cx).is_some() {
 9384                        workspace.toggle_modal(window, cx, TestModal::new);
 9385                        workspace.toggle_modal(window, cx, TestModal::new);
 9386                    } else {
 9387                        workspace.toggle_modal(window, cx, TestModal::new);
 9388                    }
 9389                })
 9390            }
 9391        };
 9392
 9393        // If focus is transferred to another view that's not a panel or another pane, we still show
 9394        // the panel as zoomed.
 9395        focus_other_view(cx);
 9396        workspace.read_with(cx, |workspace, _| {
 9397            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9398            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9399        });
 9400
 9401        // If focus is transferred elsewhere in the workspace, the panel is no longer zoomed.
 9402        workspace.update_in(cx, |_workspace, window, cx| {
 9403            cx.focus_self(window);
 9404        });
 9405        workspace.read_with(cx, |workspace, _| {
 9406            assert_eq!(workspace.zoomed, None);
 9407            assert_eq!(workspace.zoomed_position, None);
 9408        });
 9409
 9410        // If focus is transferred again to another view that's not a panel or a pane, we won't
 9411        // show the panel as zoomed because it wasn't zoomed before.
 9412        focus_other_view(cx);
 9413        workspace.read_with(cx, |workspace, _| {
 9414            assert_eq!(workspace.zoomed, None);
 9415            assert_eq!(workspace.zoomed_position, None);
 9416        });
 9417
 9418        // When the panel is activated, it is zoomed again.
 9419        cx.dispatch_action(ToggleRightDock);
 9420        workspace.read_with(cx, |workspace, _| {
 9421            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9422            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9423        });
 9424
 9425        // Emitting a ZoomOut event unzooms the panel.
 9426        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomOut));
 9427        workspace.read_with(cx, |workspace, _| {
 9428            assert_eq!(workspace.zoomed, None);
 9429            assert_eq!(workspace.zoomed_position, None);
 9430        });
 9431
 9432        // Emit closed event on panel 1, which is active
 9433        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9434
 9435        // Now the left dock is closed, because panel_1 was the active panel
 9436        workspace.update(cx, |workspace, cx| {
 9437            let right_dock = workspace.right_dock();
 9438            assert!(!right_dock.read(cx).is_open());
 9439        });
 9440    }
 9441
 9442    #[gpui::test]
 9443    async fn test_no_save_prompt_when_multi_buffer_dirty_items_closed(cx: &mut TestAppContext) {
 9444        init_test(cx);
 9445
 9446        let fs = FakeFs::new(cx.background_executor.clone());
 9447        let project = Project::test(fs, [], cx).await;
 9448        let (workspace, cx) =
 9449            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9450        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9451
 9452        let dirty_regular_buffer = cx.new(|cx| {
 9453            TestItem::new(cx)
 9454                .with_dirty(true)
 9455                .with_label("1.txt")
 9456                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9457        });
 9458        let dirty_regular_buffer_2 = cx.new(|cx| {
 9459            TestItem::new(cx)
 9460                .with_dirty(true)
 9461                .with_label("2.txt")
 9462                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9463        });
 9464        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9465            TestItem::new(cx)
 9466                .with_dirty(true)
 9467                .with_singleton(false)
 9468                .with_label("Fake Project Search")
 9469                .with_project_items(&[
 9470                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9471                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9472                ])
 9473        });
 9474        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9475        workspace.update_in(cx, |workspace, window, cx| {
 9476            workspace.add_item(
 9477                pane.clone(),
 9478                Box::new(dirty_regular_buffer.clone()),
 9479                None,
 9480                false,
 9481                false,
 9482                window,
 9483                cx,
 9484            );
 9485            workspace.add_item(
 9486                pane.clone(),
 9487                Box::new(dirty_regular_buffer_2.clone()),
 9488                None,
 9489                false,
 9490                false,
 9491                window,
 9492                cx,
 9493            );
 9494            workspace.add_item(
 9495                pane.clone(),
 9496                Box::new(dirty_multi_buffer_with_both.clone()),
 9497                None,
 9498                false,
 9499                false,
 9500                window,
 9501                cx,
 9502            );
 9503        });
 9504
 9505        pane.update_in(cx, |pane, window, cx| {
 9506            pane.activate_item(2, true, true, window, cx);
 9507            assert_eq!(
 9508                pane.active_item().unwrap().item_id(),
 9509                multi_buffer_with_both_files_id,
 9510                "Should select the multi buffer in the pane"
 9511            );
 9512        });
 9513        let close_all_but_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9514            pane.close_other_items(
 9515                &CloseOtherItems {
 9516                    save_intent: Some(SaveIntent::Save),
 9517                    close_pinned: true,
 9518                },
 9519                None,
 9520                window,
 9521                cx,
 9522            )
 9523        });
 9524        cx.background_executor.run_until_parked();
 9525        assert!(!cx.has_pending_prompt());
 9526        close_all_but_multi_buffer_task
 9527            .await
 9528            .expect("Closing all buffers but the multi buffer failed");
 9529        pane.update(cx, |pane, cx| {
 9530            assert_eq!(dirty_regular_buffer.read(cx).save_count, 1);
 9531            assert_eq!(dirty_multi_buffer_with_both.read(cx).save_count, 0);
 9532            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 1);
 9533            assert_eq!(pane.items_len(), 1);
 9534            assert_eq!(
 9535                pane.active_item().unwrap().item_id(),
 9536                multi_buffer_with_both_files_id,
 9537                "Should have only the multi buffer left in the pane"
 9538            );
 9539            assert!(
 9540                dirty_multi_buffer_with_both.read(cx).is_dirty,
 9541                "The multi buffer containing the unsaved buffer should still be dirty"
 9542            );
 9543        });
 9544
 9545        dirty_regular_buffer.update(cx, |buffer, cx| {
 9546            buffer.project_items[0].update(cx, |pi, _| pi.is_dirty = true)
 9547        });
 9548
 9549        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9550            pane.close_active_item(
 9551                &CloseActiveItem {
 9552                    save_intent: Some(SaveIntent::Close),
 9553                    close_pinned: false,
 9554                },
 9555                window,
 9556                cx,
 9557            )
 9558        });
 9559        cx.background_executor.run_until_parked();
 9560        assert!(
 9561            cx.has_pending_prompt(),
 9562            "Dirty multi buffer should prompt a save dialog"
 9563        );
 9564        cx.simulate_prompt_answer("Save");
 9565        cx.background_executor.run_until_parked();
 9566        close_multi_buffer_task
 9567            .await
 9568            .expect("Closing the multi buffer failed");
 9569        pane.update(cx, |pane, cx| {
 9570            assert_eq!(
 9571                dirty_multi_buffer_with_both.read(cx).save_count,
 9572                1,
 9573                "Multi buffer item should get be saved"
 9574            );
 9575            // Test impl does not save inner items, so we do not assert them
 9576            assert_eq!(
 9577                pane.items_len(),
 9578                0,
 9579                "No more items should be left in the pane"
 9580            );
 9581            assert!(pane.active_item().is_none());
 9582        });
 9583    }
 9584
 9585    #[gpui::test]
 9586    async fn test_save_prompt_when_dirty_multi_buffer_closed_with_some_of_its_dirty_items_not_present_in_the_pane(
 9587        cx: &mut TestAppContext,
 9588    ) {
 9589        init_test(cx);
 9590
 9591        let fs = FakeFs::new(cx.background_executor.clone());
 9592        let project = Project::test(fs, [], cx).await;
 9593        let (workspace, cx) =
 9594            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9595        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9596
 9597        let dirty_regular_buffer = cx.new(|cx| {
 9598            TestItem::new(cx)
 9599                .with_dirty(true)
 9600                .with_label("1.txt")
 9601                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9602        });
 9603        let dirty_regular_buffer_2 = cx.new(|cx| {
 9604            TestItem::new(cx)
 9605                .with_dirty(true)
 9606                .with_label("2.txt")
 9607                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9608        });
 9609        let clear_regular_buffer = cx.new(|cx| {
 9610            TestItem::new(cx)
 9611                .with_label("3.txt")
 9612                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
 9613        });
 9614
 9615        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9616            TestItem::new(cx)
 9617                .with_dirty(true)
 9618                .with_singleton(false)
 9619                .with_label("Fake Project Search")
 9620                .with_project_items(&[
 9621                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9622                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9623                    clear_regular_buffer.read(cx).project_items[0].clone(),
 9624                ])
 9625        });
 9626        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9627        workspace.update_in(cx, |workspace, window, cx| {
 9628            workspace.add_item(
 9629                pane.clone(),
 9630                Box::new(dirty_regular_buffer.clone()),
 9631                None,
 9632                false,
 9633                false,
 9634                window,
 9635                cx,
 9636            );
 9637            workspace.add_item(
 9638                pane.clone(),
 9639                Box::new(dirty_multi_buffer_with_both.clone()),
 9640                None,
 9641                false,
 9642                false,
 9643                window,
 9644                cx,
 9645            );
 9646        });
 9647
 9648        pane.update_in(cx, |pane, window, cx| {
 9649            pane.activate_item(1, true, true, window, cx);
 9650            assert_eq!(
 9651                pane.active_item().unwrap().item_id(),
 9652                multi_buffer_with_both_files_id,
 9653                "Should select the multi buffer in the pane"
 9654            );
 9655        });
 9656        let _close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9657            pane.close_active_item(
 9658                &CloseActiveItem {
 9659                    save_intent: None,
 9660                    close_pinned: false,
 9661                },
 9662                window,
 9663                cx,
 9664            )
 9665        });
 9666        cx.background_executor.run_until_parked();
 9667        assert!(
 9668            cx.has_pending_prompt(),
 9669            "With one dirty item from the multi buffer not being in the pane, a save prompt should be shown"
 9670        );
 9671    }
 9672
 9673    /// Tests that when `close_on_file_delete` is enabled, files are automatically
 9674    /// closed when they are deleted from disk.
 9675    #[gpui::test]
 9676    async fn test_close_on_disk_deletion_enabled(cx: &mut TestAppContext) {
 9677        init_test(cx);
 9678
 9679        // Enable the close_on_disk_deletion setting
 9680        cx.update_global(|store: &mut SettingsStore, cx| {
 9681            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9682                settings.close_on_file_delete = Some(true);
 9683            });
 9684        });
 9685
 9686        let fs = FakeFs::new(cx.background_executor.clone());
 9687        let project = Project::test(fs, [], cx).await;
 9688        let (workspace, cx) =
 9689            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9690        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9691
 9692        // Create a test item that simulates a file
 9693        let item = cx.new(|cx| {
 9694            TestItem::new(cx)
 9695                .with_label("test.txt")
 9696                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9697        });
 9698
 9699        // Add item to workspace
 9700        workspace.update_in(cx, |workspace, window, cx| {
 9701            workspace.add_item(
 9702                pane.clone(),
 9703                Box::new(item.clone()),
 9704                None,
 9705                false,
 9706                false,
 9707                window,
 9708                cx,
 9709            );
 9710        });
 9711
 9712        // Verify the item is in the pane
 9713        pane.read_with(cx, |pane, _| {
 9714            assert_eq!(pane.items().count(), 1);
 9715        });
 9716
 9717        // Simulate file deletion by setting the item's deleted state
 9718        item.update(cx, |item, _| {
 9719            item.set_has_deleted_file(true);
 9720        });
 9721
 9722        // Emit UpdateTab event to trigger the close behavior
 9723        cx.run_until_parked();
 9724        item.update(cx, |_, cx| {
 9725            cx.emit(ItemEvent::UpdateTab);
 9726        });
 9727
 9728        // Allow the close operation to complete
 9729        cx.run_until_parked();
 9730
 9731        // Verify the item was automatically closed
 9732        pane.read_with(cx, |pane, _| {
 9733            assert_eq!(
 9734                pane.items().count(),
 9735                0,
 9736                "Item should be automatically closed when file is deleted"
 9737            );
 9738        });
 9739    }
 9740
 9741    /// Tests that when `close_on_file_delete` is disabled (default), files remain
 9742    /// open with a strikethrough when they are deleted from disk.
 9743    #[gpui::test]
 9744    async fn test_close_on_disk_deletion_disabled(cx: &mut TestAppContext) {
 9745        init_test(cx);
 9746
 9747        // Ensure close_on_disk_deletion is disabled (default)
 9748        cx.update_global(|store: &mut SettingsStore, cx| {
 9749            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9750                settings.close_on_file_delete = Some(false);
 9751            });
 9752        });
 9753
 9754        let fs = FakeFs::new(cx.background_executor.clone());
 9755        let project = Project::test(fs, [], cx).await;
 9756        let (workspace, cx) =
 9757            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9758        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9759
 9760        // Create a test item that simulates a file
 9761        let item = cx.new(|cx| {
 9762            TestItem::new(cx)
 9763                .with_label("test.txt")
 9764                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9765        });
 9766
 9767        // Add item to workspace
 9768        workspace.update_in(cx, |workspace, window, cx| {
 9769            workspace.add_item(
 9770                pane.clone(),
 9771                Box::new(item.clone()),
 9772                None,
 9773                false,
 9774                false,
 9775                window,
 9776                cx,
 9777            );
 9778        });
 9779
 9780        // Verify the item is in the pane
 9781        pane.read_with(cx, |pane, _| {
 9782            assert_eq!(pane.items().count(), 1);
 9783        });
 9784
 9785        // Simulate file deletion
 9786        item.update(cx, |item, _| {
 9787            item.set_has_deleted_file(true);
 9788        });
 9789
 9790        // Emit UpdateTab event
 9791        cx.run_until_parked();
 9792        item.update(cx, |_, cx| {
 9793            cx.emit(ItemEvent::UpdateTab);
 9794        });
 9795
 9796        // Allow any potential close operation to complete
 9797        cx.run_until_parked();
 9798
 9799        // Verify the item remains open (with strikethrough)
 9800        pane.read_with(cx, |pane, _| {
 9801            assert_eq!(
 9802                pane.items().count(),
 9803                1,
 9804                "Item should remain open when close_on_disk_deletion is disabled"
 9805            );
 9806        });
 9807
 9808        // Verify the item shows as deleted
 9809        item.read_with(cx, |item, _| {
 9810            assert!(
 9811                item.has_deleted_file,
 9812                "Item should be marked as having deleted file"
 9813            );
 9814        });
 9815    }
 9816
 9817    /// Tests that dirty files are not automatically closed when deleted from disk,
 9818    /// even when `close_on_file_delete` is enabled. This ensures users don't lose
 9819    /// unsaved changes without being prompted.
 9820    #[gpui::test]
 9821    async fn test_close_on_disk_deletion_with_dirty_file(cx: &mut TestAppContext) {
 9822        init_test(cx);
 9823
 9824        // Enable the close_on_file_delete setting
 9825        cx.update_global(|store: &mut SettingsStore, cx| {
 9826            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9827                settings.close_on_file_delete = Some(true);
 9828            });
 9829        });
 9830
 9831        let fs = FakeFs::new(cx.background_executor.clone());
 9832        let project = Project::test(fs, [], cx).await;
 9833        let (workspace, cx) =
 9834            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9835        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9836
 9837        // Create a dirty test item
 9838        let item = cx.new(|cx| {
 9839            TestItem::new(cx)
 9840                .with_dirty(true)
 9841                .with_label("test.txt")
 9842                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9843        });
 9844
 9845        // Add item to workspace
 9846        workspace.update_in(cx, |workspace, window, cx| {
 9847            workspace.add_item(
 9848                pane.clone(),
 9849                Box::new(item.clone()),
 9850                None,
 9851                false,
 9852                false,
 9853                window,
 9854                cx,
 9855            );
 9856        });
 9857
 9858        // Simulate file deletion
 9859        item.update(cx, |item, _| {
 9860            item.set_has_deleted_file(true);
 9861        });
 9862
 9863        // Emit UpdateTab event to trigger the close behavior
 9864        cx.run_until_parked();
 9865        item.update(cx, |_, cx| {
 9866            cx.emit(ItemEvent::UpdateTab);
 9867        });
 9868
 9869        // Allow any potential close operation to complete
 9870        cx.run_until_parked();
 9871
 9872        // Verify the item remains open (dirty files are not auto-closed)
 9873        pane.read_with(cx, |pane, _| {
 9874            assert_eq!(
 9875                pane.items().count(),
 9876                1,
 9877                "Dirty items should not be automatically closed even when file is deleted"
 9878            );
 9879        });
 9880
 9881        // Verify the item is marked as deleted and still dirty
 9882        item.read_with(cx, |item, _| {
 9883            assert!(
 9884                item.has_deleted_file,
 9885                "Item should be marked as having deleted file"
 9886            );
 9887            assert!(item.is_dirty, "Item should still be dirty");
 9888        });
 9889    }
 9890
 9891    /// Tests that navigation history is cleaned up when files are auto-closed
 9892    /// due to deletion from disk.
 9893    #[gpui::test]
 9894    async fn test_close_on_disk_deletion_cleans_navigation_history(cx: &mut TestAppContext) {
 9895        init_test(cx);
 9896
 9897        // Enable the close_on_file_delete setting
 9898        cx.update_global(|store: &mut SettingsStore, cx| {
 9899            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9900                settings.close_on_file_delete = Some(true);
 9901            });
 9902        });
 9903
 9904        let fs = FakeFs::new(cx.background_executor.clone());
 9905        let project = Project::test(fs, [], cx).await;
 9906        let (workspace, cx) =
 9907            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9908        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9909
 9910        // Create test items
 9911        let item1 = cx.new(|cx| {
 9912            TestItem::new(cx)
 9913                .with_label("test1.txt")
 9914                .with_project_items(&[TestProjectItem::new(1, "test1.txt", cx)])
 9915        });
 9916        let item1_id = item1.item_id();
 9917
 9918        let item2 = cx.new(|cx| {
 9919            TestItem::new(cx)
 9920                .with_label("test2.txt")
 9921                .with_project_items(&[TestProjectItem::new(2, "test2.txt", cx)])
 9922        });
 9923
 9924        // Add items to workspace
 9925        workspace.update_in(cx, |workspace, window, cx| {
 9926            workspace.add_item(
 9927                pane.clone(),
 9928                Box::new(item1.clone()),
 9929                None,
 9930                false,
 9931                false,
 9932                window,
 9933                cx,
 9934            );
 9935            workspace.add_item(
 9936                pane.clone(),
 9937                Box::new(item2.clone()),
 9938                None,
 9939                false,
 9940                false,
 9941                window,
 9942                cx,
 9943            );
 9944        });
 9945
 9946        // Activate item1 to ensure it gets navigation entries
 9947        pane.update_in(cx, |pane, window, cx| {
 9948            pane.activate_item(0, true, true, window, cx);
 9949        });
 9950
 9951        // Switch to item2 and back to create navigation history
 9952        pane.update_in(cx, |pane, window, cx| {
 9953            pane.activate_item(1, true, true, window, cx);
 9954        });
 9955        cx.run_until_parked();
 9956
 9957        pane.update_in(cx, |pane, window, cx| {
 9958            pane.activate_item(0, true, true, window, cx);
 9959        });
 9960        cx.run_until_parked();
 9961
 9962        // Simulate file deletion for item1
 9963        item1.update(cx, |item, _| {
 9964            item.set_has_deleted_file(true);
 9965        });
 9966
 9967        // Emit UpdateTab event to trigger the close behavior
 9968        item1.update(cx, |_, cx| {
 9969            cx.emit(ItemEvent::UpdateTab);
 9970        });
 9971        cx.run_until_parked();
 9972
 9973        // Verify item1 was closed
 9974        pane.read_with(cx, |pane, _| {
 9975            assert_eq!(
 9976                pane.items().count(),
 9977                1,
 9978                "Should have 1 item remaining after auto-close"
 9979            );
 9980        });
 9981
 9982        // Check navigation history after close
 9983        let has_item = pane.read_with(cx, |pane, cx| {
 9984            let mut has_item = false;
 9985            pane.nav_history().for_each_entry(cx, |entry, _| {
 9986                if entry.item.id() == item1_id {
 9987                    has_item = true;
 9988                }
 9989            });
 9990            has_item
 9991        });
 9992
 9993        assert!(
 9994            !has_item,
 9995            "Navigation history should not contain closed item entries"
 9996        );
 9997    }
 9998
 9999    #[gpui::test]
10000    async fn test_no_save_prompt_when_dirty_multi_buffer_closed_with_all_of_its_dirty_items_present_in_the_pane(
10001        cx: &mut TestAppContext,
10002    ) {
10003        init_test(cx);
10004
10005        let fs = FakeFs::new(cx.background_executor.clone());
10006        let project = Project::test(fs, [], cx).await;
10007        let (workspace, cx) =
10008            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10009        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10010
10011        let dirty_regular_buffer = cx.new(|cx| {
10012            TestItem::new(cx)
10013                .with_dirty(true)
10014                .with_label("1.txt")
10015                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10016        });
10017        let dirty_regular_buffer_2 = cx.new(|cx| {
10018            TestItem::new(cx)
10019                .with_dirty(true)
10020                .with_label("2.txt")
10021                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10022        });
10023        let clear_regular_buffer = cx.new(|cx| {
10024            TestItem::new(cx)
10025                .with_label("3.txt")
10026                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
10027        });
10028
10029        let dirty_multi_buffer = cx.new(|cx| {
10030            TestItem::new(cx)
10031                .with_dirty(true)
10032                .with_singleton(false)
10033                .with_label("Fake Project Search")
10034                .with_project_items(&[
10035                    dirty_regular_buffer.read(cx).project_items[0].clone(),
10036                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
10037                    clear_regular_buffer.read(cx).project_items[0].clone(),
10038                ])
10039        });
10040        workspace.update_in(cx, |workspace, window, cx| {
10041            workspace.add_item(
10042                pane.clone(),
10043                Box::new(dirty_regular_buffer.clone()),
10044                None,
10045                false,
10046                false,
10047                window,
10048                cx,
10049            );
10050            workspace.add_item(
10051                pane.clone(),
10052                Box::new(dirty_regular_buffer_2.clone()),
10053                None,
10054                false,
10055                false,
10056                window,
10057                cx,
10058            );
10059            workspace.add_item(
10060                pane.clone(),
10061                Box::new(dirty_multi_buffer.clone()),
10062                None,
10063                false,
10064                false,
10065                window,
10066                cx,
10067            );
10068        });
10069
10070        pane.update_in(cx, |pane, window, cx| {
10071            pane.activate_item(2, true, true, window, cx);
10072            assert_eq!(
10073                pane.active_item().unwrap().item_id(),
10074                dirty_multi_buffer.item_id(),
10075                "Should select the multi buffer in the pane"
10076            );
10077        });
10078        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
10079            pane.close_active_item(
10080                &CloseActiveItem {
10081                    save_intent: None,
10082                    close_pinned: false,
10083                },
10084                window,
10085                cx,
10086            )
10087        });
10088        cx.background_executor.run_until_parked();
10089        assert!(
10090            !cx.has_pending_prompt(),
10091            "All dirty items from the multi buffer are in the pane still, no save prompts should be shown"
10092        );
10093        close_multi_buffer_task
10094            .await
10095            .expect("Closing multi buffer failed");
10096        pane.update(cx, |pane, cx| {
10097            assert_eq!(dirty_regular_buffer.read(cx).save_count, 0);
10098            assert_eq!(dirty_multi_buffer.read(cx).save_count, 0);
10099            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 0);
10100            assert_eq!(
10101                pane.items()
10102                    .map(|item| item.item_id())
10103                    .sorted()
10104                    .collect::<Vec<_>>(),
10105                vec![
10106                    dirty_regular_buffer.item_id(),
10107                    dirty_regular_buffer_2.item_id(),
10108                ],
10109                "Should have no multi buffer left in the pane"
10110            );
10111            assert!(dirty_regular_buffer.read(cx).is_dirty);
10112            assert!(dirty_regular_buffer_2.read(cx).is_dirty);
10113        });
10114    }
10115
10116    #[gpui::test]
10117    async fn test_move_focused_panel_to_next_position(cx: &mut gpui::TestAppContext) {
10118        init_test(cx);
10119        let fs = FakeFs::new(cx.executor());
10120        let project = Project::test(fs, [], cx).await;
10121        let (workspace, cx) =
10122            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10123
10124        // Add a new panel to the right dock, opening the dock and setting the
10125        // focus to the new panel.
10126        let panel = workspace.update_in(cx, |workspace, window, cx| {
10127            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
10128            workspace.add_panel(panel.clone(), window, cx);
10129
10130            workspace
10131                .right_dock()
10132                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
10133
10134            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10135
10136            panel
10137        });
10138
10139        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10140        // panel to the next valid position which, in this case, is the left
10141        // dock.
10142        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10143        workspace.update(cx, |workspace, cx| {
10144            assert!(workspace.left_dock().read(cx).is_open());
10145            assert_eq!(panel.read(cx).position, DockPosition::Left);
10146        });
10147
10148        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10149        // panel to the next valid position which, in this case, is the bottom
10150        // dock.
10151        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10152        workspace.update(cx, |workspace, cx| {
10153            assert!(workspace.bottom_dock().read(cx).is_open());
10154            assert_eq!(panel.read(cx).position, DockPosition::Bottom);
10155        });
10156
10157        // Dispatch the `MoveFocusedPanelToNextPosition` action again, this time
10158        // around moving the panel to its initial position, the right dock.
10159        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10160        workspace.update(cx, |workspace, cx| {
10161            assert!(workspace.right_dock().read(cx).is_open());
10162            assert_eq!(panel.read(cx).position, DockPosition::Right);
10163        });
10164
10165        // Remove focus from the panel, ensuring that, if the panel is not
10166        // focused, the `MoveFocusedPanelToNextPosition` action does not update
10167        // the panel's position, so the panel is still in the right dock.
10168        workspace.update_in(cx, |workspace, window, cx| {
10169            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10170        });
10171
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
10179    #[gpui::test]
10180    async fn test_moving_items_create_panes(cx: &mut TestAppContext) {
10181        init_test(cx);
10182
10183        let fs = FakeFs::new(cx.executor());
10184        let project = Project::test(fs, [], cx).await;
10185        let (workspace, cx) =
10186            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10187
10188        let item_1 = cx.new(|cx| {
10189            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10190        });
10191        workspace.update_in(cx, |workspace, window, cx| {
10192            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10193            workspace.move_item_to_pane_in_direction(
10194                &MoveItemToPaneInDirection {
10195                    direction: SplitDirection::Right,
10196                    focus: true,
10197                    clone: false,
10198                },
10199                window,
10200                cx,
10201            );
10202            workspace.move_item_to_pane_at_index(
10203                &MoveItemToPane {
10204                    destination: 3,
10205                    focus: true,
10206                    clone: false,
10207                },
10208                window,
10209                cx,
10210            );
10211
10212            assert_eq!(workspace.panes.len(), 1, "No new panes were created");
10213            assert_eq!(
10214                pane_items_paths(&workspace.active_pane, cx),
10215                vec!["first.txt".to_string()],
10216                "Single item was not moved anywhere"
10217            );
10218        });
10219
10220        let item_2 = cx.new(|cx| {
10221            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "second.txt", cx)])
10222        });
10223        workspace.update_in(cx, |workspace, window, cx| {
10224            workspace.add_item_to_active_pane(Box::new(item_2), None, true, window, cx);
10225            assert_eq!(
10226                pane_items_paths(&workspace.panes[0], cx),
10227                vec!["first.txt".to_string(), "second.txt".to_string()],
10228            );
10229            workspace.move_item_to_pane_in_direction(
10230                &MoveItemToPaneInDirection {
10231                    direction: SplitDirection::Right,
10232                    focus: true,
10233                    clone: false,
10234                },
10235                window,
10236                cx,
10237            );
10238
10239            assert_eq!(workspace.panes.len(), 2, "A new pane should be created");
10240            assert_eq!(
10241                pane_items_paths(&workspace.panes[0], cx),
10242                vec!["first.txt".to_string()],
10243                "After moving, one item should be left in the original pane"
10244            );
10245            assert_eq!(
10246                pane_items_paths(&workspace.panes[1], cx),
10247                vec!["second.txt".to_string()],
10248                "New item should have been moved to the new pane"
10249            );
10250        });
10251
10252        let item_3 = cx.new(|cx| {
10253            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "third.txt", cx)])
10254        });
10255        workspace.update_in(cx, |workspace, window, cx| {
10256            let original_pane = workspace.panes[0].clone();
10257            workspace.set_active_pane(&original_pane, window, cx);
10258            workspace.add_item_to_active_pane(Box::new(item_3), None, true, window, cx);
10259            assert_eq!(workspace.panes.len(), 2, "No new panes were created");
10260            assert_eq!(
10261                pane_items_paths(&workspace.active_pane, cx),
10262                vec!["first.txt".to_string(), "third.txt".to_string()],
10263                "New pane should be ready to move one item out"
10264            );
10265
10266            workspace.move_item_to_pane_at_index(
10267                &MoveItemToPane {
10268                    destination: 3,
10269                    focus: true,
10270                    clone: false,
10271                },
10272                window,
10273                cx,
10274            );
10275            assert_eq!(workspace.panes.len(), 3, "A new pane should be created");
10276            assert_eq!(
10277                pane_items_paths(&workspace.active_pane, cx),
10278                vec!["first.txt".to_string()],
10279                "After moving, one item should be left in the original pane"
10280            );
10281            assert_eq!(
10282                pane_items_paths(&workspace.panes[1], cx),
10283                vec!["second.txt".to_string()],
10284                "Previously created pane should be unchanged"
10285            );
10286            assert_eq!(
10287                pane_items_paths(&workspace.panes[2], cx),
10288                vec!["third.txt".to_string()],
10289                "New item should have been moved to the new pane"
10290            );
10291        });
10292    }
10293
10294    #[gpui::test]
10295    async fn test_moving_items_can_clone_panes(cx: &mut TestAppContext) {
10296        init_test(cx);
10297
10298        let fs = FakeFs::new(cx.executor());
10299        let project = Project::test(fs, [], cx).await;
10300        let (workspace, cx) =
10301            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10302
10303        let item_1 = cx.new(|cx| {
10304            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10305        });
10306        workspace.update_in(cx, |workspace, window, cx| {
10307            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10308            workspace.move_item_to_pane_in_direction(
10309                &MoveItemToPaneInDirection {
10310                    direction: SplitDirection::Right,
10311                    focus: true,
10312                    clone: true,
10313                },
10314                window,
10315                cx,
10316            );
10317            workspace.move_item_to_pane_at_index(
10318                &MoveItemToPane {
10319                    destination: 3,
10320                    focus: true,
10321                    clone: true,
10322                },
10323                window,
10324                cx,
10325            );
10326
10327            assert_eq!(workspace.panes.len(), 3, "Two new panes were created");
10328            for pane in workspace.panes() {
10329                assert_eq!(
10330                    pane_items_paths(pane, cx),
10331                    vec!["first.txt".to_string()],
10332                    "Single item exists in all panes"
10333                );
10334            }
10335        });
10336
10337        // verify that the active pane has been updated after waiting for the
10338        // pane focus event to fire and resolve
10339        workspace.read_with(cx, |workspace, _app| {
10340            assert_eq!(
10341                workspace.active_pane(),
10342                &workspace.panes[2],
10343                "The third pane should be the active one: {:?}",
10344                workspace.panes
10345            );
10346        })
10347    }
10348
10349    mod register_project_item_tests {
10350
10351        use super::*;
10352
10353        // View
10354        struct TestPngItemView {
10355            focus_handle: FocusHandle,
10356        }
10357        // Model
10358        struct TestPngItem {}
10359
10360        impl project::ProjectItem for TestPngItem {
10361            fn try_open(
10362                _project: &Entity<Project>,
10363                path: &ProjectPath,
10364                cx: &mut App,
10365            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10366                if path.path.extension().unwrap() == "png" {
10367                    Some(cx.spawn(async move |cx| cx.new(|_| TestPngItem {})))
10368                } else {
10369                    None
10370                }
10371            }
10372
10373            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10374                None
10375            }
10376
10377            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10378                None
10379            }
10380
10381            fn is_dirty(&self) -> bool {
10382                false
10383            }
10384        }
10385
10386        impl Item for TestPngItemView {
10387            type Event = ();
10388            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10389                "".into()
10390            }
10391        }
10392        impl EventEmitter<()> for TestPngItemView {}
10393        impl Focusable for TestPngItemView {
10394            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10395                self.focus_handle.clone()
10396            }
10397        }
10398
10399        impl Render for TestPngItemView {
10400            fn render(
10401                &mut self,
10402                _window: &mut Window,
10403                _cx: &mut Context<Self>,
10404            ) -> impl IntoElement {
10405                Empty
10406            }
10407        }
10408
10409        impl ProjectItem for TestPngItemView {
10410            type Item = TestPngItem;
10411
10412            fn for_project_item(
10413                _project: Entity<Project>,
10414                _pane: Option<&Pane>,
10415                _item: Entity<Self::Item>,
10416                _: &mut Window,
10417                cx: &mut Context<Self>,
10418            ) -> Self
10419            where
10420                Self: Sized,
10421            {
10422                Self {
10423                    focus_handle: cx.focus_handle(),
10424                }
10425            }
10426        }
10427
10428        // View
10429        struct TestIpynbItemView {
10430            focus_handle: FocusHandle,
10431        }
10432        // Model
10433        struct TestIpynbItem {}
10434
10435        impl project::ProjectItem for TestIpynbItem {
10436            fn try_open(
10437                _project: &Entity<Project>,
10438                path: &ProjectPath,
10439                cx: &mut App,
10440            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10441                if path.path.extension().unwrap() == "ipynb" {
10442                    Some(cx.spawn(async move |cx| cx.new(|_| TestIpynbItem {})))
10443                } else {
10444                    None
10445                }
10446            }
10447
10448            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10449                None
10450            }
10451
10452            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10453                None
10454            }
10455
10456            fn is_dirty(&self) -> bool {
10457                false
10458            }
10459        }
10460
10461        impl Item for TestIpynbItemView {
10462            type Event = ();
10463            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10464                "".into()
10465            }
10466        }
10467        impl EventEmitter<()> for TestIpynbItemView {}
10468        impl Focusable for TestIpynbItemView {
10469            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10470                self.focus_handle.clone()
10471            }
10472        }
10473
10474        impl Render for TestIpynbItemView {
10475            fn render(
10476                &mut self,
10477                _window: &mut Window,
10478                _cx: &mut Context<Self>,
10479            ) -> impl IntoElement {
10480                Empty
10481            }
10482        }
10483
10484        impl ProjectItem for TestIpynbItemView {
10485            type Item = TestIpynbItem;
10486
10487            fn for_project_item(
10488                _project: Entity<Project>,
10489                _pane: Option<&Pane>,
10490                _item: Entity<Self::Item>,
10491                _: &mut Window,
10492                cx: &mut Context<Self>,
10493            ) -> Self
10494            where
10495                Self: Sized,
10496            {
10497                Self {
10498                    focus_handle: cx.focus_handle(),
10499                }
10500            }
10501        }
10502
10503        struct TestAlternatePngItemView {
10504            focus_handle: FocusHandle,
10505        }
10506
10507        impl Item for TestAlternatePngItemView {
10508            type Event = ();
10509            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10510                "".into()
10511            }
10512        }
10513
10514        impl EventEmitter<()> for TestAlternatePngItemView {}
10515        impl Focusable for TestAlternatePngItemView {
10516            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10517                self.focus_handle.clone()
10518            }
10519        }
10520
10521        impl Render for TestAlternatePngItemView {
10522            fn render(
10523                &mut self,
10524                _window: &mut Window,
10525                _cx: &mut Context<Self>,
10526            ) -> impl IntoElement {
10527                Empty
10528            }
10529        }
10530
10531        impl ProjectItem for TestAlternatePngItemView {
10532            type Item = TestPngItem;
10533
10534            fn for_project_item(
10535                _project: Entity<Project>,
10536                _pane: Option<&Pane>,
10537                _item: Entity<Self::Item>,
10538                _: &mut Window,
10539                cx: &mut Context<Self>,
10540            ) -> Self
10541            where
10542                Self: Sized,
10543            {
10544                Self {
10545                    focus_handle: cx.focus_handle(),
10546                }
10547            }
10548        }
10549
10550        #[gpui::test]
10551        async fn test_register_project_item(cx: &mut TestAppContext) {
10552            init_test(cx);
10553
10554            cx.update(|cx| {
10555                register_project_item::<TestPngItemView>(cx);
10556                register_project_item::<TestIpynbItemView>(cx);
10557            });
10558
10559            let fs = FakeFs::new(cx.executor());
10560            fs.insert_tree(
10561                "/root1",
10562                json!({
10563                    "one.png": "BINARYDATAHERE",
10564                    "two.ipynb": "{ totally a notebook }",
10565                    "three.txt": "editing text, sure why not?"
10566                }),
10567            )
10568            .await;
10569
10570            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10571            let (workspace, cx) =
10572                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10573
10574            let worktree_id = project.update(cx, |project, cx| {
10575                project.worktrees(cx).next().unwrap().read(cx).id()
10576            });
10577
10578            let handle = workspace
10579                .update_in(cx, |workspace, window, cx| {
10580                    let project_path = (worktree_id, "one.png");
10581                    workspace.open_path(project_path, None, true, window, cx)
10582                })
10583                .await
10584                .unwrap();
10585
10586            // Now we can check if the handle we got back errored or not
10587            assert_eq!(
10588                handle.to_any().entity_type(),
10589                TypeId::of::<TestPngItemView>()
10590            );
10591
10592            let handle = workspace
10593                .update_in(cx, |workspace, window, cx| {
10594                    let project_path = (worktree_id, "two.ipynb");
10595                    workspace.open_path(project_path, None, true, window, cx)
10596                })
10597                .await
10598                .unwrap();
10599
10600            assert_eq!(
10601                handle.to_any().entity_type(),
10602                TypeId::of::<TestIpynbItemView>()
10603            );
10604
10605            let handle = workspace
10606                .update_in(cx, |workspace, window, cx| {
10607                    let project_path = (worktree_id, "three.txt");
10608                    workspace.open_path(project_path, None, true, window, cx)
10609                })
10610                .await;
10611            assert!(handle.is_err());
10612        }
10613
10614        #[gpui::test]
10615        async fn test_register_project_item_two_enter_one_leaves(cx: &mut TestAppContext) {
10616            init_test(cx);
10617
10618            cx.update(|cx| {
10619                register_project_item::<TestPngItemView>(cx);
10620                register_project_item::<TestAlternatePngItemView>(cx);
10621            });
10622
10623            let fs = FakeFs::new(cx.executor());
10624            fs.insert_tree(
10625                "/root1",
10626                json!({
10627                    "one.png": "BINARYDATAHERE",
10628                    "two.ipynb": "{ totally a notebook }",
10629                    "three.txt": "editing text, sure why not?"
10630                }),
10631            )
10632            .await;
10633            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10634            let (workspace, cx) =
10635                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10636            let worktree_id = project.update(cx, |project, cx| {
10637                project.worktrees(cx).next().unwrap().read(cx).id()
10638            });
10639
10640            let handle = workspace
10641                .update_in(cx, |workspace, window, cx| {
10642                    let project_path = (worktree_id, "one.png");
10643                    workspace.open_path(project_path, None, true, window, cx)
10644                })
10645                .await
10646                .unwrap();
10647
10648            // This _must_ be the second item registered
10649            assert_eq!(
10650                handle.to_any().entity_type(),
10651                TypeId::of::<TestAlternatePngItemView>()
10652            );
10653
10654            let handle = workspace
10655                .update_in(cx, |workspace, window, cx| {
10656                    let project_path = (worktree_id, "three.txt");
10657                    workspace.open_path(project_path, None, true, window, cx)
10658                })
10659                .await;
10660            assert!(handle.is_err());
10661        }
10662    }
10663
10664    fn pane_items_paths(pane: &Entity<Pane>, cx: &App) -> Vec<String> {
10665        pane.read(cx)
10666            .items()
10667            .flat_map(|item| {
10668                item.project_paths(cx)
10669                    .into_iter()
10670                    .map(|path| path.path.to_string_lossy().to_string())
10671            })
10672            .collect()
10673    }
10674
10675    pub fn init_test(cx: &mut TestAppContext) {
10676        cx.update(|cx| {
10677            let settings_store = SettingsStore::test(cx);
10678            cx.set_global(settings_store);
10679            theme::init(theme::LoadThemes::JustBase, cx);
10680            language::init(cx);
10681            crate::init_settings(cx);
10682            Project::init_settings(cx);
10683        });
10684    }
10685
10686    fn dirty_project_item(id: u64, path: &str, cx: &mut App) -> Entity<TestProjectItem> {
10687        let item = TestProjectItem::new(id, path, cx);
10688        item.update(cx, |item, _| {
10689            item.is_dirty = true;
10690        });
10691        item
10692    }
10693}