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