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::{Buffer, LanguageRegistry, Rope, language_settings::all_language_settings};
   56pub use modal_layer::*;
   57use node_runtime::NodeRuntime;
   58use notifications::{
   59    DetachAndPromptErr, Notifications, dismiss_app_notification,
   60    simple_message_notification::MessageNotification,
   61};
   62pub use pane::*;
   63pub use pane_group::{
   64    ActivePaneDecorator, HANDLE_HITBOX_SIZE, Member, PaneAxis, PaneGroup, PaneRenderContext,
   65    SplitDirection,
   66};
   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    WorktreeSettings,
   76    debugger::{breakpoint_store::BreakpointStoreEvent, session::ThreadStatus},
   77    toolchain_store::ToolchainStoreEvent,
   78};
   79use remote::{
   80    RemoteClientDelegate, RemoteConnection, RemoteConnectionOptions,
   81    remote_client::ConnectionIdentifier,
   82};
   83use schemars::JsonSchema;
   84use serde::Deserialize;
   85use session::AppSession;
   86use settings::{Settings, SettingsLocation, update_settings_file};
   87use shared_screen::SharedScreen;
   88use sqlez::{
   89    bindable::{Bind, Column, StaticColumnCount},
   90    statement::Statement,
   91};
   92use status_bar::StatusBar;
   93pub use status_bar::StatusItemView;
   94use std::{
   95    any::TypeId,
   96    borrow::Cow,
   97    cell::RefCell,
   98    cmp,
   99    collections::{VecDeque, hash_map::DefaultHasher},
  100    env,
  101    hash::{Hash, Hasher},
  102    path::{Path, PathBuf},
  103    process::ExitStatus,
  104    rc::Rc,
  105    sync::{Arc, LazyLock, Weak, atomic::AtomicUsize},
  106    time::Duration,
  107};
  108use task::{DebugScenario, SpawnInTerminal, TaskContext};
  109use theme::{ActiveTheme, GlobalTheme, SystemAppearance, ThemeSettings};
  110pub use toolbar::{Toolbar, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView};
  111pub use ui;
  112use ui::{Window, prelude::*};
  113use util::{
  114    ResultExt, TryFutureExt,
  115    paths::{PathStyle, SanitizedPath},
  116    rel_path::RelPath,
  117    serde::default_true,
  118};
  119use uuid::Uuid;
  120pub use workspace_settings::{
  121    AutosaveSetting, BottomDockLayout, RestoreOnStartupBehavior, StatusBarSettings, TabBarSettings,
  122    WorkspaceSettings,
  123};
  124use zed_actions::{Spawn, feedback::FileBugReport};
  125
  126use crate::persistence::{
  127    SerializedAxis,
  128    model::{DockData, DockStructure, SerializedItem, SerializedPane, SerializedPaneGroup},
  129};
  130use crate::{item::ItemBufferKind, notifications::NotificationId};
  131
  132pub const SERIALIZATION_THROTTLE_TIME: Duration = Duration::from_millis(200);
  133
  134static ZED_WINDOW_SIZE: LazyLock<Option<Size<Pixels>>> = LazyLock::new(|| {
  135    env::var("ZED_WINDOW_SIZE")
  136        .ok()
  137        .as_deref()
  138        .and_then(parse_pixel_size_env_var)
  139});
  140
  141static ZED_WINDOW_POSITION: LazyLock<Option<Point<Pixels>>> = LazyLock::new(|| {
  142    env::var("ZED_WINDOW_POSITION")
  143        .ok()
  144        .as_deref()
  145        .and_then(parse_pixel_position_env_var)
  146});
  147
  148pub trait TerminalProvider {
  149    fn spawn(
  150        &self,
  151        task: SpawnInTerminal,
  152        window: &mut Window,
  153        cx: &mut App,
  154    ) -> Task<Option<Result<ExitStatus>>>;
  155}
  156
  157pub trait DebuggerProvider {
  158    // `active_buffer` is used to resolve build task's name against language-specific tasks.
  159    fn start_session(
  160        &self,
  161        definition: DebugScenario,
  162        task_context: TaskContext,
  163        active_buffer: Option<Entity<Buffer>>,
  164        worktree_id: Option<WorktreeId>,
  165        window: &mut Window,
  166        cx: &mut App,
  167    );
  168
  169    fn spawn_task_or_modal(
  170        &self,
  171        workspace: &mut Workspace,
  172        action: &Spawn,
  173        window: &mut Window,
  174        cx: &mut Context<Workspace>,
  175    );
  176
  177    fn task_scheduled(&self, cx: &mut App);
  178    fn debug_scenario_scheduled(&self, cx: &mut App);
  179    fn debug_scenario_scheduled_last(&self, cx: &App) -> bool;
  180
  181    fn active_thread_state(&self, cx: &App) -> Option<ThreadStatus>;
  182}
  183
  184actions!(
  185    workspace,
  186    [
  187        /// Activates the next pane in the workspace.
  188        ActivateNextPane,
  189        /// Activates the previous pane in the workspace.
  190        ActivatePreviousPane,
  191        /// Switches to the next window.
  192        ActivateNextWindow,
  193        /// Switches to the previous window.
  194        ActivatePreviousWindow,
  195        /// Adds a folder to the current project.
  196        AddFolderToProject,
  197        /// Clears all notifications.
  198        ClearAllNotifications,
  199        /// Closes the active dock.
  200        CloseActiveDock,
  201        /// Closes all docks.
  202        CloseAllDocks,
  203        /// Closes the current window.
  204        CloseWindow,
  205        /// Opens the feedback dialog.
  206        Feedback,
  207        /// Follows the next collaborator in the session.
  208        FollowNextCollaborator,
  209        /// Moves the focused panel to the next position.
  210        MoveFocusedPanelToNextPosition,
  211        /// Opens a new terminal in the center.
  212        NewCenterTerminal,
  213        /// Creates a new file.
  214        NewFile,
  215        /// Creates a new file in a vertical split.
  216        NewFileSplitVertical,
  217        /// Creates a new file in a horizontal split.
  218        NewFileSplitHorizontal,
  219        /// Opens a new search.
  220        NewSearch,
  221        /// Opens a new terminal.
  222        NewTerminal,
  223        /// Opens a new window.
  224        NewWindow,
  225        /// Opens a file or directory.
  226        Open,
  227        /// Opens multiple files.
  228        OpenFiles,
  229        /// Opens the current location in terminal.
  230        OpenInTerminal,
  231        /// Opens the component preview.
  232        OpenComponentPreview,
  233        /// Reloads the active item.
  234        ReloadActiveItem,
  235        /// Resets the active dock to its default size.
  236        ResetActiveDockSize,
  237        /// Resets all open docks to their default sizes.
  238        ResetOpenDocksSize,
  239        /// Reloads the application
  240        Reload,
  241        /// Saves the current file with a new name.
  242        SaveAs,
  243        /// Saves without formatting.
  244        SaveWithoutFormat,
  245        /// Shuts down all debug adapters.
  246        ShutdownDebugAdapters,
  247        /// Suppresses the current notification.
  248        SuppressNotification,
  249        /// Toggles the bottom dock.
  250        ToggleBottomDock,
  251        /// Toggles centered layout mode.
  252        ToggleCenteredLayout,
  253        /// Toggles edit prediction feature globally for all files.
  254        ToggleEditPrediction,
  255        /// Toggles the left dock.
  256        ToggleLeftDock,
  257        /// Toggles the right dock.
  258        ToggleRightDock,
  259        /// Toggles zoom on the active pane.
  260        ToggleZoom,
  261        /// Stops following a collaborator.
  262        Unfollow,
  263        /// Restores the banner.
  264        RestoreBanner,
  265        /// Toggles expansion of the selected item.
  266        ToggleExpandItem,
  267    ]
  268);
  269
  270/// Activates a specific pane by its index.
  271#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  272#[action(namespace = workspace)]
  273pub struct ActivatePane(pub usize);
  274
  275/// Moves an item to a specific pane by index.
  276#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  277#[action(namespace = workspace)]
  278#[serde(deny_unknown_fields)]
  279pub struct MoveItemToPane {
  280    #[serde(default = "default_1")]
  281    pub destination: usize,
  282    #[serde(default = "default_true")]
  283    pub focus: bool,
  284    #[serde(default)]
  285    pub clone: bool,
  286}
  287
  288const fn default_1() -> usize {
  289    1
  290}
  291
  292/// Moves an item to a pane in the specified direction.
  293#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  294#[action(namespace = workspace)]
  295#[serde(deny_unknown_fields)]
  296pub struct MoveItemToPaneInDirection {
  297    #[serde(default = "default_right")]
  298    pub direction: SplitDirection,
  299    #[serde(default = "default_true")]
  300    pub focus: bool,
  301    #[serde(default)]
  302    pub clone: bool,
  303}
  304
  305const fn default_right() -> SplitDirection {
  306    SplitDirection::Right
  307}
  308
  309/// Saves all open files in the workspace.
  310#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  311#[action(namespace = workspace)]
  312#[serde(deny_unknown_fields)]
  313pub struct SaveAll {
  314    #[serde(default)]
  315    pub save_intent: Option<SaveIntent>,
  316}
  317
  318/// Saves the current file with the specified options.
  319#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  320#[action(namespace = workspace)]
  321#[serde(deny_unknown_fields)]
  322pub struct Save {
  323    #[serde(default)]
  324    pub save_intent: Option<SaveIntent>,
  325}
  326
  327/// Closes all items and panes in the workspace.
  328#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  329#[action(namespace = workspace)]
  330#[serde(deny_unknown_fields)]
  331pub struct CloseAllItemsAndPanes {
  332    #[serde(default)]
  333    pub save_intent: Option<SaveIntent>,
  334}
  335
  336/// Closes all inactive tabs and panes in the workspace.
  337#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  338#[action(namespace = workspace)]
  339#[serde(deny_unknown_fields)]
  340pub struct CloseInactiveTabsAndPanes {
  341    #[serde(default)]
  342    pub save_intent: Option<SaveIntent>,
  343}
  344
  345/// Sends a sequence of keystrokes to the active element.
  346#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  347#[action(namespace = workspace)]
  348pub struct SendKeystrokes(pub String);
  349
  350actions!(
  351    project_symbols,
  352    [
  353        /// Toggles the project symbols search.
  354        #[action(name = "Toggle")]
  355        ToggleProjectSymbols
  356    ]
  357);
  358
  359/// Toggles the file finder interface.
  360#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  361#[action(namespace = file_finder, name = "Toggle")]
  362#[serde(deny_unknown_fields)]
  363pub struct ToggleFileFinder {
  364    #[serde(default)]
  365    pub separate_history: bool,
  366}
  367
  368/// Increases size of a currently focused dock by a given amount of pixels.
  369#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  370#[action(namespace = workspace)]
  371#[serde(deny_unknown_fields)]
  372pub struct IncreaseActiveDockSize {
  373    /// For 0px parameter, uses UI font size value.
  374    #[serde(default)]
  375    pub px: u32,
  376}
  377
  378/// Decreases size of a currently focused dock by a given amount of pixels.
  379#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  380#[action(namespace = workspace)]
  381#[serde(deny_unknown_fields)]
  382pub struct DecreaseActiveDockSize {
  383    /// For 0px parameter, uses UI font size value.
  384    #[serde(default)]
  385    pub px: u32,
  386}
  387
  388/// Increases size of all currently visible docks uniformly, by a given amount of pixels.
  389#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  390#[action(namespace = workspace)]
  391#[serde(deny_unknown_fields)]
  392pub struct IncreaseOpenDocksSize {
  393    /// For 0px parameter, uses UI font size value.
  394    #[serde(default)]
  395    pub px: u32,
  396}
  397
  398/// Decreases size of all currently visible docks uniformly, by a given amount of pixels.
  399#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  400#[action(namespace = workspace)]
  401#[serde(deny_unknown_fields)]
  402pub struct DecreaseOpenDocksSize {
  403    /// For 0px parameter, uses UI font size value.
  404    #[serde(default)]
  405    pub px: u32,
  406}
  407
  408actions!(
  409    workspace,
  410    [
  411        /// Activates the pane to the left.
  412        ActivatePaneLeft,
  413        /// Activates the pane to the right.
  414        ActivatePaneRight,
  415        /// Activates the pane above.
  416        ActivatePaneUp,
  417        /// Activates the pane below.
  418        ActivatePaneDown,
  419        /// Swaps the current pane with the one to the left.
  420        SwapPaneLeft,
  421        /// Swaps the current pane with the one to the right.
  422        SwapPaneRight,
  423        /// Swaps the current pane with the one above.
  424        SwapPaneUp,
  425        /// Swaps the current pane with the one below.
  426        SwapPaneDown,
  427        /// Move the current pane to be at the far left.
  428        MovePaneLeft,
  429        /// Move the current pane to be at the far right.
  430        MovePaneRight,
  431        /// Move the current pane to be at the very top.
  432        MovePaneUp,
  433        /// Move the current pane to be at the very bottom.
  434        MovePaneDown,
  435    ]
  436);
  437
  438#[derive(PartialEq, Eq, Debug)]
  439pub enum CloseIntent {
  440    /// Quit the program entirely.
  441    Quit,
  442    /// Close a window.
  443    CloseWindow,
  444    /// Replace the workspace in an existing window.
  445    ReplaceWindow,
  446}
  447
  448#[derive(Clone)]
  449pub struct Toast {
  450    id: NotificationId,
  451    msg: Cow<'static, str>,
  452    autohide: bool,
  453    on_click: Option<(Cow<'static, str>, Arc<dyn Fn(&mut Window, &mut App)>)>,
  454}
  455
  456impl Toast {
  457    pub fn new<I: Into<Cow<'static, str>>>(id: NotificationId, msg: I) -> Self {
  458        Toast {
  459            id,
  460            msg: msg.into(),
  461            on_click: None,
  462            autohide: false,
  463        }
  464    }
  465
  466    pub fn on_click<F, M>(mut self, message: M, on_click: F) -> Self
  467    where
  468        M: Into<Cow<'static, str>>,
  469        F: Fn(&mut Window, &mut App) + 'static,
  470    {
  471        self.on_click = Some((message.into(), Arc::new(on_click)));
  472        self
  473    }
  474
  475    pub const fn autohide(mut self) -> Self {
  476        self.autohide = true;
  477        self
  478    }
  479}
  480
  481impl PartialEq for Toast {
  482    fn eq(&self, other: &Self) -> bool {
  483        self.id == other.id
  484            && self.msg == other.msg
  485            && self.on_click.is_some() == other.on_click.is_some()
  486    }
  487}
  488
  489/// Opens a new terminal with the specified working directory.
  490#[derive(Debug, Default, Clone, Deserialize, PartialEq, JsonSchema, Action)]
  491#[action(namespace = workspace)]
  492#[serde(deny_unknown_fields)]
  493pub struct OpenTerminal {
  494    pub working_directory: PathBuf,
  495}
  496
  497#[derive(Clone, Copy, Debug, Default, Hash, PartialEq, Eq, PartialOrd, Ord)]
  498pub struct WorkspaceId(i64);
  499
  500impl StaticColumnCount for WorkspaceId {}
  501impl Bind for WorkspaceId {
  502    fn bind(&self, statement: &Statement, start_index: i32) -> Result<i32> {
  503        self.0.bind(statement, start_index)
  504    }
  505}
  506impl Column for WorkspaceId {
  507    fn column(statement: &mut Statement, start_index: i32) -> Result<(Self, i32)> {
  508        i64::column(statement, start_index)
  509            .map(|(i, next_index)| (Self(i), next_index))
  510            .with_context(|| format!("Failed to read WorkspaceId at index {start_index}"))
  511    }
  512}
  513impl From<WorkspaceId> for i64 {
  514    fn from(val: WorkspaceId) -> Self {
  515        val.0
  516    }
  517}
  518
  519pub fn init_settings(cx: &mut App) {
  520    WorkspaceSettings::register(cx);
  521    ItemSettings::register(cx);
  522    PreviewTabsSettings::register(cx);
  523    TabBarSettings::register(cx);
  524    StatusBarSettings::register(cx);
  525}
  526
  527fn prompt_and_open_paths(app_state: Arc<AppState>, options: PathPromptOptions, cx: &mut App) {
  528    let paths = cx.prompt_for_paths(options);
  529    cx.spawn(
  530        async move |cx| match paths.await.anyhow().and_then(|res| res) {
  531            Ok(Some(paths)) => {
  532                cx.update(|cx| {
  533                    open_paths(&paths, app_state, OpenOptions::default(), cx).detach_and_log_err(cx)
  534                })
  535                .ok();
  536            }
  537            Ok(None) => {}
  538            Err(err) => {
  539                util::log_err(&err);
  540                cx.update(|cx| {
  541                    if let Some(workspace_window) = cx
  542                        .active_window()
  543                        .and_then(|window| window.downcast::<Workspace>())
  544                    {
  545                        workspace_window
  546                            .update(cx, |workspace, _, cx| {
  547                                workspace.show_portal_error(err.to_string(), cx);
  548                            })
  549                            .ok();
  550                    }
  551                })
  552                .ok();
  553            }
  554        },
  555    )
  556    .detach();
  557}
  558
  559pub fn init(app_state: Arc<AppState>, cx: &mut App) {
  560    init_settings(cx);
  561    component::init();
  562    theme_preview::init(cx);
  563    toast_layer::init(cx);
  564    history_manager::init(cx);
  565
  566    cx.on_action(|_: &CloseWindow, cx| Workspace::close_global(cx));
  567    cx.on_action(|_: &Reload, cx| reload(cx));
  568
  569    cx.on_action({
  570        let app_state = Arc::downgrade(&app_state);
  571        move |_: &Open, cx: &mut App| {
  572            if let Some(app_state) = app_state.upgrade() {
  573                prompt_and_open_paths(
  574                    app_state,
  575                    PathPromptOptions {
  576                        files: true,
  577                        directories: true,
  578                        multiple: true,
  579                        prompt: None,
  580                    },
  581                    cx,
  582                );
  583            }
  584        }
  585    });
  586    cx.on_action({
  587        let app_state = Arc::downgrade(&app_state);
  588        move |_: &OpenFiles, cx: &mut App| {
  589            let directories = cx.can_select_mixed_files_and_dirs();
  590            if let Some(app_state) = app_state.upgrade() {
  591                prompt_and_open_paths(
  592                    app_state,
  593                    PathPromptOptions {
  594                        files: true,
  595                        directories,
  596                        multiple: true,
  597                        prompt: None,
  598                    },
  599                    cx,
  600                );
  601            }
  602        }
  603    });
  604}
  605
  606type BuildProjectItemFn =
  607    fn(AnyEntity, Entity<Project>, Option<&Pane>, &mut Window, &mut App) -> Box<dyn ItemHandle>;
  608
  609type BuildProjectItemForPathFn =
  610    fn(
  611        &Entity<Project>,
  612        &ProjectPath,
  613        &mut Window,
  614        &mut App,
  615    ) -> Option<Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>>>;
  616
  617#[derive(Clone, Default)]
  618struct ProjectItemRegistry {
  619    build_project_item_fns_by_type: HashMap<TypeId, BuildProjectItemFn>,
  620    build_project_item_for_path_fns: Vec<BuildProjectItemForPathFn>,
  621}
  622
  623impl ProjectItemRegistry {
  624    fn register<T: ProjectItem>(&mut self) {
  625        self.build_project_item_fns_by_type.insert(
  626            TypeId::of::<T::Item>(),
  627            |item, project, pane, window, cx| {
  628                let item = item.downcast().unwrap();
  629                Box::new(cx.new(|cx| T::for_project_item(project, pane, item, window, cx)))
  630                    as Box<dyn ItemHandle>
  631            },
  632        );
  633        self.build_project_item_for_path_fns
  634            .push(|project, project_path, window, cx| {
  635                let project_path = project_path.clone();
  636                let is_file = project
  637                    .read(cx)
  638                    .entry_for_path(&project_path, cx)
  639                    .is_some_and(|entry| entry.is_file());
  640                let entry_abs_path = project.read(cx).absolute_path(&project_path, cx);
  641                let is_local = project.read(cx).is_local();
  642                let project_item =
  643                    <T::Item as project::ProjectItem>::try_open(project, &project_path, cx)?;
  644                let project = project.clone();
  645                Some(window.spawn(cx, async move |cx| {
  646                    match project_item.await.with_context(|| {
  647                        format!(
  648                            "opening project path {:?}",
  649                            entry_abs_path.as_deref().unwrap_or(&project_path.path.as_std_path())
  650                        )
  651                    }) {
  652                        Ok(project_item) => {
  653                            let project_item = project_item;
  654                            let project_entry_id: Option<ProjectEntryId> =
  655                                project_item.read_with(cx, project::ProjectItem::entry_id)?;
  656                            let build_workspace_item = Box::new(
  657                                |pane: &mut Pane, window: &mut Window, cx: &mut Context<Pane>| {
  658                                    Box::new(cx.new(|cx| {
  659                                        T::for_project_item(
  660                                            project,
  661                                            Some(pane),
  662                                            project_item,
  663                                            window,
  664                                            cx,
  665                                        )
  666                                    })) as Box<dyn ItemHandle>
  667                                },
  668                            ) as Box<_>;
  669                            Ok((project_entry_id, build_workspace_item))
  670                        }
  671                        Err(e) => {
  672                            if e.error_code() == ErrorCode::Internal {
  673                                if let Some(abs_path) =
  674                                    entry_abs_path.as_deref().filter(|_| is_file)
  675                                {
  676                                    if let Some(broken_project_item_view) =
  677                                        cx.update(|window, cx| {
  678                                            T::for_broken_project_item(
  679                                                abs_path, is_local, &e, window, cx,
  680                                            )
  681                                        })?
  682                                    {
  683                                        let build_workspace_item = Box::new(
  684                                            move |_: &mut Pane, _: &mut Window, cx: &mut Context<Pane>| {
  685                                                cx.new(|_| broken_project_item_view).boxed_clone()
  686                                            },
  687                                        )
  688                                        as Box<_>;
  689                                        return Ok((None, build_workspace_item));
  690                                    }
  691                                }
  692                            }
  693                            Err(e)
  694                        }
  695                    }
  696                }))
  697            });
  698    }
  699
  700    fn open_path(
  701        &self,
  702        project: &Entity<Project>,
  703        path: &ProjectPath,
  704        window: &mut Window,
  705        cx: &mut App,
  706    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
  707        let Some(open_project_item) = self
  708            .build_project_item_for_path_fns
  709            .iter()
  710            .rev()
  711            .find_map(|open_project_item| open_project_item(project, path, window, cx))
  712        else {
  713            return Task::ready(Err(anyhow!("cannot open file {:?}", path.path)));
  714        };
  715        open_project_item
  716    }
  717
  718    fn build_item<T: project::ProjectItem>(
  719        &self,
  720        item: Entity<T>,
  721        project: Entity<Project>,
  722        pane: Option<&Pane>,
  723        window: &mut Window,
  724        cx: &mut App,
  725    ) -> Option<Box<dyn ItemHandle>> {
  726        let build = self
  727            .build_project_item_fns_by_type
  728            .get(&TypeId::of::<T>())?;
  729        Some(build(item.into_any(), project, pane, window, cx))
  730    }
  731}
  732
  733type WorkspaceItemBuilder =
  734    Box<dyn FnOnce(&mut Pane, &mut Window, &mut Context<Pane>) -> Box<dyn ItemHandle>>;
  735
  736impl Global for ProjectItemRegistry {}
  737
  738/// Registers a [ProjectItem] for the app. When opening a file, all the registered
  739/// items will get a chance to open the file, starting from the project item that
  740/// was added last.
  741pub fn register_project_item<I: ProjectItem>(cx: &mut App) {
  742    cx.default_global::<ProjectItemRegistry>().register::<I>();
  743}
  744
  745#[derive(Default)]
  746pub struct FollowableViewRegistry(HashMap<TypeId, FollowableViewDescriptor>);
  747
  748struct FollowableViewDescriptor {
  749    from_state_proto: fn(
  750        Entity<Workspace>,
  751        ViewId,
  752        &mut Option<proto::view::Variant>,
  753        &mut Window,
  754        &mut App,
  755    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>>,
  756    to_followable_view: fn(&AnyView) -> Box<dyn FollowableItemHandle>,
  757}
  758
  759impl Global for FollowableViewRegistry {}
  760
  761impl FollowableViewRegistry {
  762    pub fn register<I: FollowableItem>(cx: &mut App) {
  763        cx.default_global::<Self>().0.insert(
  764            TypeId::of::<I>(),
  765            FollowableViewDescriptor {
  766                from_state_proto: |workspace, id, state, window, cx| {
  767                    I::from_state_proto(workspace, id, state, window, cx).map(|task| {
  768                        cx.foreground_executor()
  769                            .spawn(async move { Ok(Box::new(task.await?) as Box<_>) })
  770                    })
  771                },
  772                to_followable_view: |view| Box::new(view.clone().downcast::<I>().unwrap()),
  773            },
  774        );
  775    }
  776
  777    pub fn from_state_proto(
  778        workspace: Entity<Workspace>,
  779        view_id: ViewId,
  780        mut state: Option<proto::view::Variant>,
  781        window: &mut Window,
  782        cx: &mut App,
  783    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>> {
  784        cx.update_default_global(|this: &mut Self, cx| {
  785            this.0.values().find_map(|descriptor| {
  786                (descriptor.from_state_proto)(workspace.clone(), view_id, &mut state, window, cx)
  787            })
  788        })
  789    }
  790
  791    pub fn to_followable_view(
  792        view: impl Into<AnyView>,
  793        cx: &App,
  794    ) -> Option<Box<dyn FollowableItemHandle>> {
  795        let this = cx.try_global::<Self>()?;
  796        let view = view.into();
  797        let descriptor = this.0.get(&view.entity_type())?;
  798        Some((descriptor.to_followable_view)(&view))
  799    }
  800}
  801
  802#[derive(Copy, Clone)]
  803struct SerializableItemDescriptor {
  804    deserialize: fn(
  805        Entity<Project>,
  806        WeakEntity<Workspace>,
  807        WorkspaceId,
  808        ItemId,
  809        &mut Window,
  810        &mut Context<Pane>,
  811    ) -> Task<Result<Box<dyn ItemHandle>>>,
  812    cleanup: fn(WorkspaceId, Vec<ItemId>, &mut Window, &mut App) -> Task<Result<()>>,
  813    view_to_serializable_item: fn(AnyView) -> Box<dyn SerializableItemHandle>,
  814}
  815
  816#[derive(Default)]
  817struct SerializableItemRegistry {
  818    descriptors_by_kind: HashMap<Arc<str>, SerializableItemDescriptor>,
  819    descriptors_by_type: HashMap<TypeId, SerializableItemDescriptor>,
  820}
  821
  822impl Global for SerializableItemRegistry {}
  823
  824impl SerializableItemRegistry {
  825    fn deserialize(
  826        item_kind: &str,
  827        project: Entity<Project>,
  828        workspace: WeakEntity<Workspace>,
  829        workspace_id: WorkspaceId,
  830        item_item: ItemId,
  831        window: &mut Window,
  832        cx: &mut Context<Pane>,
  833    ) -> Task<Result<Box<dyn ItemHandle>>> {
  834        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  835            return Task::ready(Err(anyhow!(
  836                "cannot deserialize {}, descriptor not found",
  837                item_kind
  838            )));
  839        };
  840
  841        (descriptor.deserialize)(project, workspace, workspace_id, item_item, window, cx)
  842    }
  843
  844    fn cleanup(
  845        item_kind: &str,
  846        workspace_id: WorkspaceId,
  847        loaded_items: Vec<ItemId>,
  848        window: &mut Window,
  849        cx: &mut App,
  850    ) -> Task<Result<()>> {
  851        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  852            return Task::ready(Err(anyhow!(
  853                "cannot cleanup {}, descriptor not found",
  854                item_kind
  855            )));
  856        };
  857
  858        (descriptor.cleanup)(workspace_id, loaded_items, window, cx)
  859    }
  860
  861    fn view_to_serializable_item_handle(
  862        view: AnyView,
  863        cx: &App,
  864    ) -> Option<Box<dyn SerializableItemHandle>> {
  865        let this = cx.try_global::<Self>()?;
  866        let descriptor = this.descriptors_by_type.get(&view.entity_type())?;
  867        Some((descriptor.view_to_serializable_item)(view))
  868    }
  869
  870    fn descriptor(item_kind: &str, cx: &App) -> Option<SerializableItemDescriptor> {
  871        let this = cx.try_global::<Self>()?;
  872        this.descriptors_by_kind.get(item_kind).copied()
  873    }
  874}
  875
  876pub fn register_serializable_item<I: SerializableItem>(cx: &mut App) {
  877    let serialized_item_kind = I::serialized_item_kind();
  878
  879    let registry = cx.default_global::<SerializableItemRegistry>();
  880    let descriptor = SerializableItemDescriptor {
  881        deserialize: |project, workspace, workspace_id, item_id, window, cx| {
  882            let task = I::deserialize(project, workspace, workspace_id, item_id, window, cx);
  883            cx.foreground_executor()
  884                .spawn(async { Ok(Box::new(task.await?) as Box<_>) })
  885        },
  886        cleanup: |workspace_id, loaded_items, window, cx| {
  887            I::cleanup(workspace_id, loaded_items, window, cx)
  888        },
  889        view_to_serializable_item: |view| Box::new(view.downcast::<I>().unwrap()),
  890    };
  891    registry
  892        .descriptors_by_kind
  893        .insert(Arc::from(serialized_item_kind), descriptor);
  894    registry
  895        .descriptors_by_type
  896        .insert(TypeId::of::<I>(), descriptor);
  897}
  898
  899pub struct AppState {
  900    pub languages: Arc<LanguageRegistry>,
  901    pub client: Arc<Client>,
  902    pub user_store: Entity<UserStore>,
  903    pub workspace_store: Entity<WorkspaceStore>,
  904    pub fs: Arc<dyn fs::Fs>,
  905    pub build_window_options: fn(Option<Uuid>, &mut App) -> WindowOptions,
  906    pub node_runtime: NodeRuntime,
  907    pub session: Entity<AppSession>,
  908}
  909
  910struct GlobalAppState(Weak<AppState>);
  911
  912impl Global for GlobalAppState {}
  913
  914pub struct WorkspaceStore {
  915    workspaces: HashSet<WindowHandle<Workspace>>,
  916    client: Arc<Client>,
  917    _subscriptions: Vec<client::Subscription>,
  918}
  919
  920#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq, PartialOrd, Ord)]
  921pub enum CollaboratorId {
  922    PeerId(PeerId),
  923    Agent,
  924}
  925
  926impl From<PeerId> for CollaboratorId {
  927    fn from(peer_id: PeerId) -> Self {
  928        CollaboratorId::PeerId(peer_id)
  929    }
  930}
  931
  932impl From<&PeerId> for CollaboratorId {
  933    fn from(peer_id: &PeerId) -> Self {
  934        CollaboratorId::PeerId(*peer_id)
  935    }
  936}
  937
  938#[derive(PartialEq, Eq, PartialOrd, Ord, Debug)]
  939struct Follower {
  940    project_id: Option<u64>,
  941    peer_id: PeerId,
  942}
  943
  944impl AppState {
  945    #[track_caller]
  946    pub fn global(cx: &App) -> Weak<Self> {
  947        cx.global::<GlobalAppState>().0.clone()
  948    }
  949    pub fn try_global(cx: &App) -> Option<Weak<Self>> {
  950        cx.try_global::<GlobalAppState>()
  951            .map(|state| state.0.clone())
  952    }
  953    pub fn set_global(state: Weak<AppState>, cx: &mut App) {
  954        cx.set_global(GlobalAppState(state));
  955    }
  956
  957    #[cfg(any(test, feature = "test-support"))]
  958    pub fn test(cx: &mut App) -> Arc<Self> {
  959        use node_runtime::NodeRuntime;
  960        use session::Session;
  961        use settings::SettingsStore;
  962
  963        if !cx.has_global::<SettingsStore>() {
  964            let settings_store = SettingsStore::test(cx);
  965            cx.set_global(settings_store);
  966        }
  967
  968        let fs = fs::FakeFs::new(cx.background_executor().clone());
  969        let languages = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));
  970        let clock = Arc::new(clock::FakeSystemClock::new());
  971        let http_client = http_client::FakeHttpClient::with_404_response();
  972        let client = Client::new(clock, http_client, cx);
  973        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
  974        let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
  975        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
  976
  977        theme::init(theme::LoadThemes::JustBase, cx);
  978        client::init(&client, cx);
  979        crate::init_settings(cx);
  980
  981        Arc::new(Self {
  982            client,
  983            fs,
  984            languages,
  985            user_store,
  986            workspace_store,
  987            node_runtime: NodeRuntime::unavailable(),
  988            build_window_options: |_, _| Default::default(),
  989            session,
  990        })
  991    }
  992}
  993
  994struct DelayedDebouncedEditAction {
  995    task: Option<Task<()>>,
  996    cancel_channel: Option<oneshot::Sender<()>>,
  997}
  998
  999impl DelayedDebouncedEditAction {
 1000    const fn new() -> DelayedDebouncedEditAction {
 1001        DelayedDebouncedEditAction {
 1002            task: None,
 1003            cancel_channel: None,
 1004        }
 1005    }
 1006
 1007    fn fire_new<F>(
 1008        &mut self,
 1009        delay: Duration,
 1010        window: &mut Window,
 1011        cx: &mut Context<Workspace>,
 1012        func: F,
 1013    ) where
 1014        F: 'static
 1015            + Send
 1016            + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> Task<Result<()>>,
 1017    {
 1018        if let Some(channel) = self.cancel_channel.take() {
 1019            _ = channel.send(());
 1020        }
 1021
 1022        let (sender, mut receiver) = oneshot::channel::<()>();
 1023        self.cancel_channel = Some(sender);
 1024
 1025        let previous_task = self.task.take();
 1026        self.task = Some(cx.spawn_in(window, async move |workspace, cx| {
 1027            let mut timer = cx.background_executor().timer(delay).fuse();
 1028            if let Some(previous_task) = previous_task {
 1029                previous_task.await;
 1030            }
 1031
 1032            futures::select_biased! {
 1033                _ = receiver => return,
 1034                    _ = timer => {}
 1035            }
 1036
 1037            if let Some(result) = workspace
 1038                .update_in(cx, |workspace, window, cx| (func)(workspace, window, cx))
 1039                .log_err()
 1040            {
 1041                result.await.log_err();
 1042            }
 1043        }));
 1044    }
 1045}
 1046
 1047pub enum Event {
 1048    PaneAdded(Entity<Pane>),
 1049    PaneRemoved,
 1050    ItemAdded {
 1051        item: Box<dyn ItemHandle>,
 1052    },
 1053    ActiveItemChanged,
 1054    ItemRemoved {
 1055        item_id: EntityId,
 1056    },
 1057    UserSavedItem {
 1058        pane: WeakEntity<Pane>,
 1059        item: Box<dyn WeakItemHandle>,
 1060        save_intent: SaveIntent,
 1061    },
 1062    ContactRequestedJoin(u64),
 1063    WorkspaceCreated(WeakEntity<Workspace>),
 1064    OpenBundledFile {
 1065        text: Cow<'static, str>,
 1066        title: &'static str,
 1067        language: &'static str,
 1068    },
 1069    ZoomChanged,
 1070    ModalOpened,
 1071}
 1072
 1073#[derive(Debug)]
 1074pub enum OpenVisible {
 1075    All,
 1076    None,
 1077    OnlyFiles,
 1078    OnlyDirectories,
 1079}
 1080
 1081enum WorkspaceLocation {
 1082    // Valid local paths or SSH project to serialize
 1083    Location(SerializedWorkspaceLocation, PathList),
 1084    // No valid location found hence clear session id
 1085    DetachFromSession,
 1086    // No valid location found to serialize
 1087    None,
 1088}
 1089
 1090type PromptForNewPath = Box<
 1091    dyn Fn(
 1092        &mut Workspace,
 1093        DirectoryLister,
 1094        &mut Window,
 1095        &mut Context<Workspace>,
 1096    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1097>;
 1098
 1099type PromptForOpenPath = Box<
 1100    dyn Fn(
 1101        &mut Workspace,
 1102        DirectoryLister,
 1103        &mut Window,
 1104        &mut Context<Workspace>,
 1105    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1106>;
 1107
 1108#[derive(Default)]
 1109struct DispatchingKeystrokes {
 1110    dispatched: HashSet<Vec<Keystroke>>,
 1111    queue: VecDeque<Keystroke>,
 1112    task: Option<Shared<Task<()>>>,
 1113}
 1114
 1115/// Collects everything project-related for a certain window opened.
 1116/// In some way, is a counterpart of a window, as the [`WindowHandle`] could be downcast into `Workspace`.
 1117///
 1118/// A `Workspace` usually consists of 1 or more projects, a central pane group, 3 docks and a status bar.
 1119/// The `Workspace` owns everybody's state and serves as a default, "global context",
 1120/// that can be used to register a global action to be triggered from any place in the window.
 1121pub struct Workspace {
 1122    weak_self: WeakEntity<Self>,
 1123    workspace_actions: Vec<Box<dyn Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div>>,
 1124    zoomed: Option<AnyWeakView>,
 1125    previous_dock_drag_coordinates: Option<Point<Pixels>>,
 1126    zoomed_position: Option<DockPosition>,
 1127    center: PaneGroup,
 1128    left_dock: Entity<Dock>,
 1129    bottom_dock: Entity<Dock>,
 1130    right_dock: Entity<Dock>,
 1131    panes: Vec<Entity<Pane>>,
 1132    panes_by_item: HashMap<EntityId, WeakEntity<Pane>>,
 1133    active_pane: Entity<Pane>,
 1134    last_active_center_pane: Option<WeakEntity<Pane>>,
 1135    last_active_view_id: Option<proto::ViewId>,
 1136    status_bar: Entity<StatusBar>,
 1137    modal_layer: Entity<ModalLayer>,
 1138    toast_layer: Entity<ToastLayer>,
 1139    titlebar_item: Option<AnyView>,
 1140    notifications: Notifications,
 1141    suppressed_notifications: HashSet<NotificationId>,
 1142    project: Entity<Project>,
 1143    follower_states: HashMap<CollaboratorId, FollowerState>,
 1144    last_leaders_by_pane: HashMap<WeakEntity<Pane>, CollaboratorId>,
 1145    window_edited: bool,
 1146    last_window_title: Option<String>,
 1147    dirty_items: HashMap<EntityId, Subscription>,
 1148    active_call: Option<(Entity<ActiveCall>, Vec<Subscription>)>,
 1149    leader_updates_tx: mpsc::UnboundedSender<(PeerId, proto::UpdateFollowers)>,
 1150    database_id: Option<WorkspaceId>,
 1151    app_state: Arc<AppState>,
 1152    dispatching_keystrokes: Rc<RefCell<DispatchingKeystrokes>>,
 1153    _subscriptions: Vec<Subscription>,
 1154    _apply_leader_updates: Task<Result<()>>,
 1155    _observe_current_user: Task<Result<()>>,
 1156    _schedule_serialize_workspace: Option<Task<()>>,
 1157    _schedule_serialize_ssh_paths: Option<Task<()>>,
 1158    pane_history_timestamp: Arc<AtomicUsize>,
 1159    bounds: Bounds<Pixels>,
 1160    pub centered_layout: bool,
 1161    bounds_save_task_queued: Option<Task<()>>,
 1162    on_prompt_for_new_path: Option<PromptForNewPath>,
 1163    on_prompt_for_open_path: Option<PromptForOpenPath>,
 1164    terminal_provider: Option<Box<dyn TerminalProvider>>,
 1165    debugger_provider: Option<Arc<dyn DebuggerProvider>>,
 1166    serializable_items_tx: UnboundedSender<Box<dyn SerializableItemHandle>>,
 1167    _items_serializer: Task<Result<()>>,
 1168    session_id: Option<String>,
 1169    scheduled_tasks: Vec<Task<()>>,
 1170}
 1171
 1172impl EventEmitter<Event> for Workspace {}
 1173
 1174#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
 1175pub struct ViewId {
 1176    pub creator: CollaboratorId,
 1177    pub id: u64,
 1178}
 1179
 1180pub struct FollowerState {
 1181    center_pane: Entity<Pane>,
 1182    dock_pane: Option<Entity<Pane>>,
 1183    active_view_id: Option<ViewId>,
 1184    items_by_leader_view_id: HashMap<ViewId, FollowerView>,
 1185}
 1186
 1187struct FollowerView {
 1188    view: Box<dyn FollowableItemHandle>,
 1189    location: Option<proto::PanelId>,
 1190}
 1191
 1192impl Workspace {
 1193    const DEFAULT_PADDING: f32 = 0.2;
 1194    const MAX_PADDING: f32 = 0.4;
 1195
 1196    pub fn new(
 1197        workspace_id: Option<WorkspaceId>,
 1198        project: Entity<Project>,
 1199        app_state: Arc<AppState>,
 1200        window: &mut Window,
 1201        cx: &mut Context<Self>,
 1202    ) -> Self {
 1203        cx.subscribe_in(&project, window, move |this, _, event, window, cx| {
 1204            match event {
 1205                project::Event::RemoteIdChanged(_) => {
 1206                    this.update_window_title(window, cx);
 1207                }
 1208
 1209                project::Event::CollaboratorLeft(peer_id) => {
 1210                    this.collaborator_left(*peer_id, window, cx);
 1211                }
 1212
 1213                project::Event::WorktreeRemoved(_) | project::Event::WorktreeAdded(_) => {
 1214                    this.update_window_title(window, cx);
 1215                    this.serialize_workspace(window, cx);
 1216                    // This event could be triggered by `AddFolderToProject` or `RemoveFromProject`.
 1217                    this.update_history(cx);
 1218                }
 1219
 1220                project::Event::DisconnectedFromHost => {
 1221                    this.update_window_edited(window, cx);
 1222                    let leaders_to_unfollow =
 1223                        this.follower_states.keys().copied().collect::<Vec<_>>();
 1224                    for leader_id in leaders_to_unfollow {
 1225                        this.unfollow(leader_id, window, cx);
 1226                    }
 1227                }
 1228
 1229                project::Event::DisconnectedFromSshRemote => {
 1230                    this.update_window_edited(window, cx);
 1231                }
 1232
 1233                project::Event::Closed => {
 1234                    window.remove_window();
 1235                }
 1236
 1237                project::Event::DeletedEntry(_, entry_id) => {
 1238                    for pane in this.panes.iter() {
 1239                        pane.update(cx, |pane, cx| {
 1240                            pane.handle_deleted_project_item(*entry_id, window, cx)
 1241                        });
 1242                    }
 1243                }
 1244
 1245                project::Event::Toast {
 1246                    notification_id,
 1247                    message,
 1248                } => this.show_notification(
 1249                    NotificationId::named(notification_id.clone()),
 1250                    cx,
 1251                    |cx| cx.new(|cx| MessageNotification::new(message.clone(), cx)),
 1252                ),
 1253
 1254                project::Event::HideToast { notification_id } => {
 1255                    this.dismiss_notification(&NotificationId::named(notification_id.clone()), cx)
 1256                }
 1257
 1258                project::Event::LanguageServerPrompt(request) => {
 1259                    struct LanguageServerPrompt;
 1260
 1261                    let mut hasher = DefaultHasher::new();
 1262                    request.lsp_name.as_str().hash(&mut hasher);
 1263                    let id = hasher.finish();
 1264
 1265                    this.show_notification(
 1266                        NotificationId::composite::<LanguageServerPrompt>(id as usize),
 1267                        cx,
 1268                        |cx| {
 1269                            cx.new(|cx| {
 1270                                notifications::LanguageServerPrompt::new(request.clone(), cx)
 1271                            })
 1272                        },
 1273                    );
 1274                }
 1275
 1276                project::Event::AgentLocationChanged => {
 1277                    this.handle_agent_location_changed(window, cx)
 1278                }
 1279
 1280                _ => {}
 1281            }
 1282            cx.notify()
 1283        })
 1284        .detach();
 1285
 1286        cx.subscribe_in(
 1287            &project.read(cx).breakpoint_store(),
 1288            window,
 1289            |workspace, _, event, window, cx| match event {
 1290                BreakpointStoreEvent::BreakpointsUpdated(_, _)
 1291                | BreakpointStoreEvent::BreakpointsCleared(_) => {
 1292                    workspace.serialize_workspace(window, cx);
 1293                }
 1294                BreakpointStoreEvent::SetDebugLine | BreakpointStoreEvent::ClearDebugLines => {}
 1295            },
 1296        )
 1297        .detach();
 1298        if let Some(toolchain_store) = project.read(cx).toolchain_store() {
 1299            cx.subscribe_in(
 1300                &toolchain_store,
 1301                window,
 1302                |workspace, _, event, window, cx| match event {
 1303                    ToolchainStoreEvent::CustomToolchainsModified => {
 1304                        workspace.serialize_workspace(window, cx);
 1305                    }
 1306                    _ => {}
 1307                },
 1308            )
 1309            .detach();
 1310        }
 1311
 1312        cx.on_focus_lost(window, |this, window, cx| {
 1313            let focus_handle = this.focus_handle(cx);
 1314            window.focus(&focus_handle);
 1315        })
 1316        .detach();
 1317
 1318        let weak_handle = cx.entity().downgrade();
 1319        let pane_history_timestamp = Arc::new(AtomicUsize::new(0));
 1320
 1321        let center_pane = cx.new(|cx| {
 1322            let mut center_pane = Pane::new(
 1323                weak_handle.clone(),
 1324                project.clone(),
 1325                pane_history_timestamp.clone(),
 1326                None,
 1327                NewFile.boxed_clone(),
 1328                window,
 1329                cx,
 1330            );
 1331            center_pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 1332            center_pane
 1333        });
 1334        cx.subscribe_in(&center_pane, window, Self::handle_pane_event)
 1335            .detach();
 1336
 1337        window.focus(&center_pane.focus_handle(cx));
 1338
 1339        cx.emit(Event::PaneAdded(center_pane.clone()));
 1340
 1341        let window_handle = window.window_handle().downcast::<Workspace>().unwrap();
 1342        app_state.workspace_store.update(cx, |store, _| {
 1343            store.workspaces.insert(window_handle);
 1344        });
 1345
 1346        let mut current_user = app_state.user_store.read(cx).watch_current_user();
 1347        let mut connection_status = app_state.client.status();
 1348        let _observe_current_user = cx.spawn_in(window, async move |this, cx| {
 1349            current_user.next().await;
 1350            connection_status.next().await;
 1351            let mut stream =
 1352                Stream::map(current_user, drop).merge(Stream::map(connection_status, drop));
 1353
 1354            while stream.recv().await.is_some() {
 1355                this.update(cx, |_, cx| cx.notify())?;
 1356            }
 1357            anyhow::Ok(())
 1358        });
 1359
 1360        // All leader updates are enqueued and then processed in a single task, so
 1361        // that each asynchronous operation can be run in order.
 1362        let (leader_updates_tx, mut leader_updates_rx) =
 1363            mpsc::unbounded::<(PeerId, proto::UpdateFollowers)>();
 1364        let _apply_leader_updates = cx.spawn_in(window, async move |this, cx| {
 1365            while let Some((leader_id, update)) = leader_updates_rx.next().await {
 1366                Self::process_leader_update(&this, leader_id, update, cx)
 1367                    .await
 1368                    .log_err();
 1369            }
 1370
 1371            Ok(())
 1372        });
 1373
 1374        cx.emit(Event::WorkspaceCreated(weak_handle.clone()));
 1375        let modal_layer = cx.new(|_| ModalLayer::new());
 1376        let toast_layer = cx.new(|_| ToastLayer::new());
 1377        cx.subscribe(
 1378            &modal_layer,
 1379            |_, _, _: &modal_layer::ModalOpenedEvent, cx| {
 1380                cx.emit(Event::ModalOpened);
 1381            },
 1382        )
 1383        .detach();
 1384
 1385        let left_dock = Dock::new(DockPosition::Left, modal_layer.clone(), window, cx);
 1386        let bottom_dock = Dock::new(DockPosition::Bottom, modal_layer.clone(), window, cx);
 1387        let right_dock = Dock::new(DockPosition::Right, modal_layer.clone(), window, cx);
 1388        let left_dock_buttons = cx.new(|cx| PanelButtons::new(left_dock.clone(), cx));
 1389        let bottom_dock_buttons = cx.new(|cx| PanelButtons::new(bottom_dock.clone(), cx));
 1390        let right_dock_buttons = cx.new(|cx| PanelButtons::new(right_dock.clone(), cx));
 1391        let status_bar = cx.new(|cx| {
 1392            let mut status_bar = StatusBar::new(&center_pane.clone(), window, cx);
 1393            status_bar.add_left_item(left_dock_buttons, window, cx);
 1394            status_bar.add_right_item(right_dock_buttons, window, cx);
 1395            status_bar.add_right_item(bottom_dock_buttons, window, cx);
 1396            status_bar
 1397        });
 1398
 1399        let session_id = app_state.session.read(cx).id().to_owned();
 1400
 1401        let mut active_call = None;
 1402        if let Some(call) = ActiveCall::try_global(cx) {
 1403            let subscriptions = vec![cx.subscribe_in(&call, window, Self::on_active_call_event)];
 1404            active_call = Some((call, subscriptions));
 1405        }
 1406
 1407        let (serializable_items_tx, serializable_items_rx) =
 1408            mpsc::unbounded::<Box<dyn SerializableItemHandle>>();
 1409        let _items_serializer = cx.spawn_in(window, async move |this, cx| {
 1410            Self::serialize_items(&this, serializable_items_rx, cx).await
 1411        });
 1412
 1413        let subscriptions = vec![
 1414            cx.observe_window_activation(window, Self::on_window_activation_changed),
 1415            cx.observe_window_bounds(window, move |this, window, cx| {
 1416                if this.bounds_save_task_queued.is_some() {
 1417                    return;
 1418                }
 1419                this.bounds_save_task_queued = Some(cx.spawn_in(window, async move |this, cx| {
 1420                    cx.background_executor()
 1421                        .timer(Duration::from_millis(100))
 1422                        .await;
 1423                    this.update_in(cx, |this, window, cx| {
 1424                        if let Some(display) = window.display(cx)
 1425                            && let Ok(display_uuid) = display.uuid()
 1426                        {
 1427                            let window_bounds = window.inner_window_bounds();
 1428                            if let Some(database_id) = workspace_id {
 1429                                cx.background_executor()
 1430                                    .spawn(DB.set_window_open_status(
 1431                                        database_id,
 1432                                        SerializedWindowBounds(window_bounds),
 1433                                        display_uuid,
 1434                                    ))
 1435                                    .detach_and_log_err(cx);
 1436                            }
 1437                        }
 1438                        this.bounds_save_task_queued.take();
 1439                    })
 1440                    .ok();
 1441                }));
 1442                cx.notify();
 1443            }),
 1444            cx.observe_window_appearance(window, |_, window, cx| {
 1445                let window_appearance = window.appearance();
 1446
 1447                *SystemAppearance::global_mut(cx) = SystemAppearance(window_appearance.into());
 1448
 1449                GlobalTheme::reload_theme(cx);
 1450                GlobalTheme::reload_icon_theme(cx);
 1451            }),
 1452            cx.on_release(move |this, cx| {
 1453                this.app_state.workspace_store.update(cx, move |store, _| {
 1454                    store.workspaces.remove(&window_handle.clone());
 1455                })
 1456            }),
 1457        ];
 1458
 1459        cx.defer_in(window, |this, window, cx| {
 1460            this.update_window_title(window, cx);
 1461            this.show_initial_notifications(cx);
 1462        });
 1463        Workspace {
 1464            weak_self: weak_handle.clone(),
 1465            zoomed: None,
 1466            zoomed_position: None,
 1467            previous_dock_drag_coordinates: None,
 1468            center: PaneGroup::new(center_pane.clone()),
 1469            panes: vec![center_pane.clone()],
 1470            panes_by_item: Default::default(),
 1471            active_pane: center_pane.clone(),
 1472            last_active_center_pane: Some(center_pane.downgrade()),
 1473            last_active_view_id: None,
 1474            status_bar,
 1475            modal_layer,
 1476            toast_layer,
 1477            titlebar_item: None,
 1478            notifications: Notifications::default(),
 1479            suppressed_notifications: HashSet::default(),
 1480            left_dock,
 1481            bottom_dock,
 1482            right_dock,
 1483            project: project.clone(),
 1484            follower_states: Default::default(),
 1485            last_leaders_by_pane: Default::default(),
 1486            dispatching_keystrokes: Default::default(),
 1487            window_edited: false,
 1488            last_window_title: None,
 1489            dirty_items: Default::default(),
 1490            active_call,
 1491            database_id: workspace_id,
 1492            app_state,
 1493            _observe_current_user,
 1494            _apply_leader_updates,
 1495            _schedule_serialize_workspace: None,
 1496            _schedule_serialize_ssh_paths: None,
 1497            leader_updates_tx,
 1498            _subscriptions: subscriptions,
 1499            pane_history_timestamp,
 1500            workspace_actions: Default::default(),
 1501            // This data will be incorrect, but it will be overwritten by the time it needs to be used.
 1502            bounds: Default::default(),
 1503            centered_layout: false,
 1504            bounds_save_task_queued: None,
 1505            on_prompt_for_new_path: None,
 1506            on_prompt_for_open_path: None,
 1507            terminal_provider: None,
 1508            debugger_provider: None,
 1509            serializable_items_tx,
 1510            _items_serializer,
 1511            session_id: Some(session_id),
 1512
 1513            scheduled_tasks: Vec::new(),
 1514        }
 1515    }
 1516
 1517    pub fn new_local(
 1518        abs_paths: Vec<PathBuf>,
 1519        app_state: Arc<AppState>,
 1520        requesting_window: Option<WindowHandle<Workspace>>,
 1521        env: Option<HashMap<String, String>>,
 1522        cx: &mut App,
 1523    ) -> Task<
 1524        anyhow::Result<(
 1525            WindowHandle<Workspace>,
 1526            Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 1527        )>,
 1528    > {
 1529        let project_handle = Project::local(
 1530            app_state.client.clone(),
 1531            app_state.node_runtime.clone(),
 1532            app_state.user_store.clone(),
 1533            app_state.languages.clone(),
 1534            app_state.fs.clone(),
 1535            env,
 1536            cx,
 1537        );
 1538
 1539        cx.spawn(async move |cx| {
 1540            let mut paths_to_open = Vec::with_capacity(abs_paths.len());
 1541            for path in abs_paths.into_iter() {
 1542                if let Some(canonical) = app_state.fs.canonicalize(&path).await.ok() {
 1543                    paths_to_open.push(canonical)
 1544                } else {
 1545                    paths_to_open.push(path)
 1546                }
 1547            }
 1548
 1549            let serialized_workspace =
 1550                persistence::DB.workspace_for_roots(paths_to_open.as_slice());
 1551
 1552            if let Some(paths) = serialized_workspace.as_ref().map(|ws| &ws.paths) {
 1553                paths_to_open = paths.ordered_paths().cloned().collect();
 1554                if !paths.is_lexicographically_ordered() {
 1555                    project_handle
 1556                        .update(cx, |project, cx| {
 1557                            project.set_worktrees_reordered(true, cx);
 1558                        })
 1559                        .log_err();
 1560                }
 1561            }
 1562
 1563            // Get project paths for all of the abs_paths
 1564            let mut project_paths: Vec<(PathBuf, Option<ProjectPath>)> =
 1565                Vec::with_capacity(paths_to_open.len());
 1566
 1567            for path in paths_to_open.into_iter() {
 1568                if let Some((_, project_entry)) = cx
 1569                    .update(|cx| {
 1570                        Workspace::project_path_for_path(project_handle.clone(), &path, true, cx)
 1571                    })?
 1572                    .await
 1573                    .log_err()
 1574                {
 1575                    project_paths.push((path, Some(project_entry)));
 1576                } else {
 1577                    project_paths.push((path, None));
 1578                }
 1579            }
 1580
 1581            let workspace_id = if let Some(serialized_workspace) = serialized_workspace.as_ref() {
 1582                serialized_workspace.id
 1583            } else {
 1584                DB.next_id().await.unwrap_or_else(|_| Default::default())
 1585            };
 1586
 1587            let toolchains = DB.toolchains(workspace_id).await?;
 1588
 1589            for (toolchain, worktree_id, path) in toolchains {
 1590                let toolchain_path = PathBuf::from(toolchain.path.clone().to_string());
 1591                if !app_state.fs.is_file(toolchain_path.as_path()).await {
 1592                    continue;
 1593                }
 1594
 1595                project_handle
 1596                    .update(cx, |this, cx| {
 1597                        this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 1598                    })?
 1599                    .await;
 1600            }
 1601            if let Some(workspace) = serialized_workspace.as_ref() {
 1602                project_handle.update(cx, |this, cx| {
 1603                    for (scope, toolchains) in &workspace.user_toolchains {
 1604                        for toolchain in toolchains {
 1605                            this.add_toolchain(toolchain.clone(), scope.clone(), cx);
 1606                        }
 1607                    }
 1608                })?;
 1609            }
 1610
 1611            let window = if let Some(window) = requesting_window {
 1612                let centered_layout = serialized_workspace
 1613                    .as_ref()
 1614                    .map(|w| w.centered_layout)
 1615                    .unwrap_or(false);
 1616
 1617                cx.update_window(window.into(), |_, window, cx| {
 1618                    window.replace_root(cx, |window, cx| {
 1619                        let mut workspace = Workspace::new(
 1620                            Some(workspace_id),
 1621                            project_handle.clone(),
 1622                            app_state.clone(),
 1623                            window,
 1624                            cx,
 1625                        );
 1626
 1627                        workspace.centered_layout = centered_layout;
 1628                        workspace
 1629                    });
 1630                })?;
 1631                window
 1632            } else {
 1633                let window_bounds_override = window_bounds_env_override();
 1634
 1635                let (window_bounds, display) = if let Some(bounds) = window_bounds_override {
 1636                    (Some(WindowBounds::Windowed(bounds)), None)
 1637                } else {
 1638                    let restorable_bounds = serialized_workspace
 1639                        .as_ref()
 1640                        .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 1641                        .or_else(|| {
 1642                            let (display, window_bounds) = DB.last_window().log_err()?;
 1643                            Some((display?, window_bounds?))
 1644                        });
 1645
 1646                    if let Some((serialized_display, serialized_status)) = restorable_bounds {
 1647                        (Some(serialized_status.0), Some(serialized_display))
 1648                    } else {
 1649                        (None, None)
 1650                    }
 1651                };
 1652
 1653                // Use the serialized workspace to construct the new window
 1654                let mut options = cx.update(|cx| (app_state.build_window_options)(display, cx))?;
 1655                options.window_bounds = window_bounds;
 1656                let centered_layout = serialized_workspace
 1657                    .as_ref()
 1658                    .map(|w| w.centered_layout)
 1659                    .unwrap_or(false);
 1660                cx.open_window(options, {
 1661                    let app_state = app_state.clone();
 1662                    let project_handle = project_handle.clone();
 1663                    move |window, cx| {
 1664                        cx.new(|cx| {
 1665                            let mut workspace = Workspace::new(
 1666                                Some(workspace_id),
 1667                                project_handle,
 1668                                app_state,
 1669                                window,
 1670                                cx,
 1671                            );
 1672                            workspace.centered_layout = centered_layout;
 1673                            workspace
 1674                        })
 1675                    }
 1676                })?
 1677            };
 1678
 1679            notify_if_database_failed(window, cx);
 1680            let opened_items = window
 1681                .update(cx, |_workspace, window, cx| {
 1682                    open_items(serialized_workspace, project_paths, window, cx)
 1683                })?
 1684                .await
 1685                .unwrap_or_default();
 1686
 1687            window
 1688                .update(cx, |workspace, window, cx| {
 1689                    window.activate_window();
 1690                    workspace.update_history(cx);
 1691                })
 1692                .log_err();
 1693            Ok((window, opened_items))
 1694        })
 1695    }
 1696
 1697    pub fn weak_handle(&self) -> WeakEntity<Self> {
 1698        self.weak_self.clone()
 1699    }
 1700
 1701    pub const fn left_dock(&self) -> &Entity<Dock> {
 1702        &self.left_dock
 1703    }
 1704
 1705    pub const fn bottom_dock(&self) -> &Entity<Dock> {
 1706        &self.bottom_dock
 1707    }
 1708
 1709    pub fn set_bottom_dock_layout(
 1710        &mut self,
 1711        layout: BottomDockLayout,
 1712        window: &mut Window,
 1713        cx: &mut Context<Self>,
 1714    ) {
 1715        let fs = self.project().read(cx).fs();
 1716        settings::update_settings_file(fs.clone(), cx, move |content, _cx| {
 1717            content.workspace.bottom_dock_layout = Some(layout);
 1718        });
 1719
 1720        cx.notify();
 1721        self.serialize_workspace(window, cx);
 1722    }
 1723
 1724    pub const fn right_dock(&self) -> &Entity<Dock> {
 1725        &self.right_dock
 1726    }
 1727
 1728    pub const fn all_docks(&self) -> [&Entity<Dock>; 3] {
 1729        [&self.left_dock, &self.bottom_dock, &self.right_dock]
 1730    }
 1731
 1732    pub const fn dock_at_position(&self, position: DockPosition) -> &Entity<Dock> {
 1733        match position {
 1734            DockPosition::Left => &self.left_dock,
 1735            DockPosition::Bottom => &self.bottom_dock,
 1736            DockPosition::Right => &self.right_dock,
 1737        }
 1738    }
 1739
 1740    pub const fn is_edited(&self) -> bool {
 1741        self.window_edited
 1742    }
 1743
 1744    pub fn add_panel<T: Panel>(
 1745        &mut self,
 1746        panel: Entity<T>,
 1747        window: &mut Window,
 1748        cx: &mut Context<Self>,
 1749    ) {
 1750        let focus_handle = panel.panel_focus_handle(cx);
 1751        cx.on_focus_in(&focus_handle, window, Self::handle_panel_focused)
 1752            .detach();
 1753
 1754        let dock_position = panel.position(window, cx);
 1755        let dock = self.dock_at_position(dock_position);
 1756
 1757        dock.update(cx, |dock, cx| {
 1758            dock.add_panel(panel, self.weak_self.clone(), window, cx)
 1759        });
 1760    }
 1761
 1762    pub fn remove_panel<T: Panel>(
 1763        &mut self,
 1764        panel: &Entity<T>,
 1765        window: &mut Window,
 1766        cx: &mut Context<Self>,
 1767    ) {
 1768        for dock in [&self.left_dock, &self.bottom_dock, &self.right_dock] {
 1769            dock.update(cx, |dock, cx| {
 1770                dock.remove_panel(panel, window, cx);
 1771            })
 1772        }
 1773    }
 1774
 1775    pub const fn status_bar(&self) -> &Entity<StatusBar> {
 1776        &self.status_bar
 1777    }
 1778
 1779    pub fn status_bar_visible(&self, cx: &App) -> bool {
 1780        StatusBarSettings::get_global(cx).show
 1781    }
 1782
 1783    pub const fn app_state(&self) -> &Arc<AppState> {
 1784        &self.app_state
 1785    }
 1786
 1787    pub fn user_store(&self) -> &Entity<UserStore> {
 1788        &self.app_state.user_store
 1789    }
 1790
 1791    pub const fn project(&self) -> &Entity<Project> {
 1792        &self.project
 1793    }
 1794
 1795    pub fn path_style(&self, cx: &App) -> PathStyle {
 1796        self.project.read(cx).path_style(cx)
 1797    }
 1798
 1799    pub fn recently_activated_items(&self, cx: &App) -> HashMap<EntityId, usize> {
 1800        let mut history: HashMap<EntityId, usize> = HashMap::default();
 1801
 1802        for pane_handle in &self.panes {
 1803            let pane = pane_handle.read(cx);
 1804
 1805            for entry in pane.activation_history() {
 1806                history.insert(
 1807                    entry.entity_id,
 1808                    history
 1809                        .get(&entry.entity_id)
 1810                        .cloned()
 1811                        .unwrap_or(0)
 1812                        .max(entry.timestamp),
 1813                );
 1814            }
 1815        }
 1816
 1817        history
 1818    }
 1819
 1820    pub fn recent_active_item_by_type<T: 'static>(&self, cx: &App) -> Option<Entity<T>> {
 1821        let mut recent_item: Option<Entity<T>> = None;
 1822        let mut recent_timestamp = 0;
 1823        for pane_handle in &self.panes {
 1824            let pane = pane_handle.read(cx);
 1825            let item_map: HashMap<EntityId, &Box<dyn ItemHandle>> =
 1826                pane.items().map(|item| (item.item_id(), item)).collect();
 1827            for entry in pane.activation_history() {
 1828                if entry.timestamp > recent_timestamp
 1829                    && let Some(&item) = item_map.get(&entry.entity_id)
 1830                    && let Some(typed_item) = item.act_as::<T>(cx)
 1831                {
 1832                    recent_timestamp = entry.timestamp;
 1833                    recent_item = Some(typed_item);
 1834                }
 1835            }
 1836        }
 1837        recent_item
 1838    }
 1839
 1840    pub fn recent_navigation_history_iter(
 1841        &self,
 1842        cx: &App,
 1843    ) -> impl Iterator<Item = (ProjectPath, Option<PathBuf>)> {
 1844        let mut abs_paths_opened: HashMap<PathBuf, HashSet<ProjectPath>> = HashMap::default();
 1845        let mut history: HashMap<ProjectPath, (Option<PathBuf>, usize)> = HashMap::default();
 1846
 1847        for pane in &self.panes {
 1848            let pane = pane.read(cx);
 1849
 1850            pane.nav_history()
 1851                .for_each_entry(cx, |entry, (project_path, fs_path)| {
 1852                    if let Some(fs_path) = &fs_path {
 1853                        abs_paths_opened
 1854                            .entry(fs_path.clone())
 1855                            .or_default()
 1856                            .insert(project_path.clone());
 1857                    }
 1858                    let timestamp = entry.timestamp;
 1859                    match history.entry(project_path) {
 1860                        hash_map::Entry::Occupied(mut entry) => {
 1861                            let (_, old_timestamp) = entry.get();
 1862                            if &timestamp > old_timestamp {
 1863                                entry.insert((fs_path, timestamp));
 1864                            }
 1865                        }
 1866                        hash_map::Entry::Vacant(entry) => {
 1867                            entry.insert((fs_path, timestamp));
 1868                        }
 1869                    }
 1870                });
 1871
 1872            if let Some(item) = pane.active_item()
 1873                && let Some(project_path) = item.project_path(cx)
 1874            {
 1875                let fs_path = self.project.read(cx).absolute_path(&project_path, cx);
 1876
 1877                if let Some(fs_path) = &fs_path {
 1878                    abs_paths_opened
 1879                        .entry(fs_path.clone())
 1880                        .or_default()
 1881                        .insert(project_path.clone());
 1882                }
 1883
 1884                history.insert(project_path, (fs_path, std::usize::MAX));
 1885            }
 1886        }
 1887
 1888        history
 1889            .into_iter()
 1890            .sorted_by_key(|(_, (_, order))| *order)
 1891            .map(|(project_path, (fs_path, _))| (project_path, fs_path))
 1892            .rev()
 1893            .filter(move |(history_path, abs_path)| {
 1894                let latest_project_path_opened = abs_path
 1895                    .as_ref()
 1896                    .and_then(|abs_path| abs_paths_opened.get(abs_path))
 1897                    .and_then(|project_paths| {
 1898                        project_paths
 1899                            .iter()
 1900                            .max_by(|b1, b2| b1.worktree_id.cmp(&b2.worktree_id))
 1901                    });
 1902
 1903                latest_project_path_opened.is_none_or(|path| path == history_path)
 1904            })
 1905    }
 1906
 1907    pub fn recent_navigation_history(
 1908        &self,
 1909        limit: Option<usize>,
 1910        cx: &App,
 1911    ) -> Vec<(ProjectPath, Option<PathBuf>)> {
 1912        self.recent_navigation_history_iter(cx)
 1913            .take(limit.unwrap_or(usize::MAX))
 1914            .collect()
 1915    }
 1916
 1917    fn navigate_history(
 1918        &mut self,
 1919        pane: WeakEntity<Pane>,
 1920        mode: NavigationMode,
 1921        window: &mut Window,
 1922        cx: &mut Context<Workspace>,
 1923    ) -> Task<Result<()>> {
 1924        let to_load = if let Some(pane) = pane.upgrade() {
 1925            pane.update(cx, |pane, cx| {
 1926                window.focus(&pane.focus_handle(cx));
 1927                loop {
 1928                    // Retrieve the weak item handle from the history.
 1929                    let entry = pane.nav_history_mut().pop(mode, cx)?;
 1930
 1931                    // If the item is still present in this pane, then activate it.
 1932                    if let Some(index) = entry
 1933                        .item
 1934                        .upgrade()
 1935                        .and_then(|v| pane.index_for_item(v.as_ref()))
 1936                    {
 1937                        let prev_active_item_index = pane.active_item_index();
 1938                        pane.nav_history_mut().set_mode(mode);
 1939                        pane.activate_item(index, true, true, window, cx);
 1940                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1941
 1942                        let mut navigated = prev_active_item_index != pane.active_item_index();
 1943                        if let Some(data) = entry.data {
 1944                            navigated |= pane.active_item()?.navigate(data, window, cx);
 1945                        }
 1946
 1947                        if navigated {
 1948                            break None;
 1949                        }
 1950                    } else {
 1951                        // If the item is no longer present in this pane, then retrieve its
 1952                        // path info in order to reopen it.
 1953                        break pane
 1954                            .nav_history()
 1955                            .path_for_item(entry.item.id())
 1956                            .map(|(project_path, abs_path)| (project_path, abs_path, entry));
 1957                    }
 1958                }
 1959            })
 1960        } else {
 1961            None
 1962        };
 1963
 1964        if let Some((project_path, abs_path, entry)) = to_load {
 1965            // If the item was no longer present, then load it again from its previous path, first try the local path
 1966            let open_by_project_path = self.load_path(project_path.clone(), window, cx);
 1967
 1968            cx.spawn_in(window, async move  |workspace, cx| {
 1969                let open_by_project_path = open_by_project_path.await;
 1970                let mut navigated = false;
 1971                match open_by_project_path
 1972                    .with_context(|| format!("Navigating to {project_path:?}"))
 1973                {
 1974                    Ok((project_entry_id, build_item)) => {
 1975                        let prev_active_item_id = pane.update(cx, |pane, _| {
 1976                            pane.nav_history_mut().set_mode(mode);
 1977                            pane.active_item().map(|p| p.item_id())
 1978                        })?;
 1979
 1980                        pane.update_in(cx, |pane, window, cx| {
 1981                            let item = pane.open_item(
 1982                                project_entry_id,
 1983                                project_path,
 1984                                true,
 1985                                entry.is_preview,
 1986                                true,
 1987                                None,
 1988                                window, cx,
 1989                                build_item,
 1990                            );
 1991                            navigated |= Some(item.item_id()) != prev_active_item_id;
 1992                            pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1993                            if let Some(data) = entry.data {
 1994                                navigated |= item.navigate(data, window, cx);
 1995                            }
 1996                        })?;
 1997                    }
 1998                    Err(open_by_project_path_e) => {
 1999                        // Fall back to opening by abs path, in case an external file was opened and closed,
 2000                        // and its worktree is now dropped
 2001                        if let Some(abs_path) = abs_path {
 2002                            let prev_active_item_id = pane.update(cx, |pane, _| {
 2003                                pane.nav_history_mut().set_mode(mode);
 2004                                pane.active_item().map(|p| p.item_id())
 2005                            })?;
 2006                            let open_by_abs_path = workspace.update_in(cx, |workspace, window, cx| {
 2007                                workspace.open_abs_path(abs_path.clone(), OpenOptions { visible: Some(OpenVisible::None), ..Default::default() }, window, cx)
 2008                            })?;
 2009                            match open_by_abs_path
 2010                                .await
 2011                                .with_context(|| format!("Navigating to {abs_path:?}"))
 2012                            {
 2013                                Ok(item) => {
 2014                                    pane.update_in(cx, |pane, window, cx| {
 2015                                        navigated |= Some(item.item_id()) != prev_active_item_id;
 2016                                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 2017                                        if let Some(data) = entry.data {
 2018                                            navigated |= item.navigate(data, window, cx);
 2019                                        }
 2020                                    })?;
 2021                                }
 2022                                Err(open_by_abs_path_e) => {
 2023                                    log::error!("Failed to navigate history: {open_by_project_path_e:#} and {open_by_abs_path_e:#}");
 2024                                }
 2025                            }
 2026                        }
 2027                    }
 2028                }
 2029
 2030                if !navigated {
 2031                    workspace
 2032                        .update_in(cx, |workspace, window, cx| {
 2033                            Self::navigate_history(workspace, pane, mode, window, cx)
 2034                        })?
 2035                        .await?;
 2036                }
 2037
 2038                Ok(())
 2039            })
 2040        } else {
 2041            Task::ready(Ok(()))
 2042        }
 2043    }
 2044
 2045    pub fn go_back(
 2046        &mut self,
 2047        pane: WeakEntity<Pane>,
 2048        window: &mut Window,
 2049        cx: &mut Context<Workspace>,
 2050    ) -> Task<Result<()>> {
 2051        self.navigate_history(pane, NavigationMode::GoingBack, window, cx)
 2052    }
 2053
 2054    pub fn go_forward(
 2055        &mut self,
 2056        pane: WeakEntity<Pane>,
 2057        window: &mut Window,
 2058        cx: &mut Context<Workspace>,
 2059    ) -> Task<Result<()>> {
 2060        self.navigate_history(pane, NavigationMode::GoingForward, window, cx)
 2061    }
 2062
 2063    pub fn reopen_closed_item(
 2064        &mut self,
 2065        window: &mut Window,
 2066        cx: &mut Context<Workspace>,
 2067    ) -> Task<Result<()>> {
 2068        self.navigate_history(
 2069            self.active_pane().downgrade(),
 2070            NavigationMode::ReopeningClosedItem,
 2071            window,
 2072            cx,
 2073        )
 2074    }
 2075
 2076    pub fn client(&self) -> &Arc<Client> {
 2077        &self.app_state.client
 2078    }
 2079
 2080    pub fn set_titlebar_item(&mut self, item: AnyView, _: &mut Window, cx: &mut Context<Self>) {
 2081        self.titlebar_item = Some(item);
 2082        cx.notify();
 2083    }
 2084
 2085    pub fn set_prompt_for_new_path(&mut self, prompt: PromptForNewPath) {
 2086        self.on_prompt_for_new_path = Some(prompt)
 2087    }
 2088
 2089    pub fn set_prompt_for_open_path(&mut self, prompt: PromptForOpenPath) {
 2090        self.on_prompt_for_open_path = Some(prompt)
 2091    }
 2092
 2093    pub fn set_terminal_provider(&mut self, provider: impl TerminalProvider + 'static) {
 2094        self.terminal_provider = Some(Box::new(provider));
 2095    }
 2096
 2097    pub fn set_debugger_provider(&mut self, provider: impl DebuggerProvider + 'static) {
 2098        self.debugger_provider = Some(Arc::new(provider));
 2099    }
 2100
 2101    pub fn debugger_provider(&self) -> Option<Arc<dyn DebuggerProvider>> {
 2102        self.debugger_provider.clone()
 2103    }
 2104
 2105    pub fn prompt_for_open_path(
 2106        &mut self,
 2107        path_prompt_options: PathPromptOptions,
 2108        lister: DirectoryLister,
 2109        window: &mut Window,
 2110        cx: &mut Context<Self>,
 2111    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2112        if !lister.is_local(cx) || !WorkspaceSettings::get_global(cx).use_system_path_prompts {
 2113            let prompt = self.on_prompt_for_open_path.take().unwrap();
 2114            let rx = prompt(self, lister, window, cx);
 2115            self.on_prompt_for_open_path = Some(prompt);
 2116            rx
 2117        } else {
 2118            let (tx, rx) = oneshot::channel();
 2119            let abs_path = cx.prompt_for_paths(path_prompt_options);
 2120
 2121            cx.spawn_in(window, async move |workspace, cx| {
 2122                let Ok(result) = abs_path.await else {
 2123                    return Ok(());
 2124                };
 2125
 2126                match result {
 2127                    Ok(result) => {
 2128                        tx.send(result).ok();
 2129                    }
 2130                    Err(err) => {
 2131                        let rx = workspace.update_in(cx, |workspace, window, cx| {
 2132                            workspace.show_portal_error(err.to_string(), cx);
 2133                            let prompt = workspace.on_prompt_for_open_path.take().unwrap();
 2134                            let rx = prompt(workspace, lister, window, cx);
 2135                            workspace.on_prompt_for_open_path = Some(prompt);
 2136                            rx
 2137                        })?;
 2138                        if let Ok(path) = rx.await {
 2139                            tx.send(path).ok();
 2140                        }
 2141                    }
 2142                };
 2143                anyhow::Ok(())
 2144            })
 2145            .detach();
 2146
 2147            rx
 2148        }
 2149    }
 2150
 2151    pub fn prompt_for_new_path(
 2152        &mut self,
 2153        lister: DirectoryLister,
 2154        suggested_name: Option<String>,
 2155        window: &mut Window,
 2156        cx: &mut Context<Self>,
 2157    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2158        if self.project.read(cx).is_via_collab()
 2159            || self.project.read(cx).is_via_remote_server()
 2160            || !WorkspaceSettings::get_global(cx).use_system_path_prompts
 2161        {
 2162            let prompt = self.on_prompt_for_new_path.take().unwrap();
 2163            let rx = prompt(self, lister, window, cx);
 2164            self.on_prompt_for_new_path = Some(prompt);
 2165            return rx;
 2166        }
 2167
 2168        let (tx, rx) = oneshot::channel();
 2169        cx.spawn_in(window, async move |workspace, cx| {
 2170            let abs_path = workspace.update(cx, |workspace, cx| {
 2171                let relative_to = workspace
 2172                    .most_recent_active_path(cx)
 2173                    .and_then(|p| p.parent().map(|p| p.to_path_buf()))
 2174                    .or_else(|| {
 2175                        let project = workspace.project.read(cx);
 2176                        project.visible_worktrees(cx).find_map(|worktree| {
 2177                            Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
 2178                        })
 2179                    })
 2180                    .or_else(std::env::home_dir)
 2181                    .unwrap_or_else(|| PathBuf::from(""));
 2182                cx.prompt_for_new_path(&relative_to, suggested_name.as_deref())
 2183            })?;
 2184            let abs_path = match abs_path.await? {
 2185                Ok(path) => path,
 2186                Err(err) => {
 2187                    let rx = workspace.update_in(cx, |workspace, window, cx| {
 2188                        workspace.show_portal_error(err.to_string(), cx);
 2189
 2190                        let prompt = workspace.on_prompt_for_new_path.take().unwrap();
 2191                        let rx = prompt(workspace, lister, window, cx);
 2192                        workspace.on_prompt_for_new_path = Some(prompt);
 2193                        rx
 2194                    })?;
 2195                    if let Ok(path) = rx.await {
 2196                        tx.send(path).ok();
 2197                    }
 2198                    return anyhow::Ok(());
 2199                }
 2200            };
 2201
 2202            tx.send(abs_path.map(|path| vec![path])).ok();
 2203            anyhow::Ok(())
 2204        })
 2205        .detach();
 2206
 2207        rx
 2208    }
 2209
 2210    pub fn titlebar_item(&self) -> Option<AnyView> {
 2211        self.titlebar_item.clone()
 2212    }
 2213
 2214    /// Call the given callback with a workspace whose project is local.
 2215    ///
 2216    /// If the given workspace has a local project, then it will be passed
 2217    /// to the callback. Otherwise, a new empty window will be created.
 2218    pub fn with_local_workspace<T, F>(
 2219        &mut self,
 2220        window: &mut Window,
 2221        cx: &mut Context<Self>,
 2222        callback: F,
 2223    ) -> Task<Result<T>>
 2224    where
 2225        T: 'static,
 2226        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
 2227    {
 2228        if self.project.read(cx).is_local() {
 2229            Task::ready(Ok(callback(self, window, cx)))
 2230        } else {
 2231            let env = self.project.read(cx).cli_environment(cx);
 2232            let task = Self::new_local(Vec::new(), self.app_state.clone(), None, env, cx);
 2233            cx.spawn_in(window, async move |_vh, cx| {
 2234                let (workspace, _) = task.await?;
 2235                workspace.update(cx, callback)
 2236            })
 2237        }
 2238    }
 2239
 2240    pub fn worktrees<'a>(&self, cx: &'a App) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2241        self.project.read(cx).worktrees(cx)
 2242    }
 2243
 2244    pub fn visible_worktrees<'a>(
 2245        &self,
 2246        cx: &'a App,
 2247    ) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2248        self.project.read(cx).visible_worktrees(cx)
 2249    }
 2250
 2251    #[cfg(any(test, feature = "test-support"))]
 2252    pub fn worktree_scans_complete(&self, cx: &App) -> impl Future<Output = ()> + 'static + use<> {
 2253        let futures = self
 2254            .worktrees(cx)
 2255            .filter_map(|worktree| worktree.read(cx).as_local())
 2256            .map(|worktree| worktree.scan_complete())
 2257            .collect::<Vec<_>>();
 2258        async move {
 2259            for future in futures {
 2260                future.await;
 2261            }
 2262        }
 2263    }
 2264
 2265    pub fn close_global(cx: &mut App) {
 2266        cx.defer(|cx| {
 2267            cx.windows().iter().find(|window| {
 2268                window
 2269                    .update(cx, |_, window, _| {
 2270                        if window.is_window_active() {
 2271                            //This can only get called when the window's project connection has been lost
 2272                            //so we don't need to prompt the user for anything and instead just close the window
 2273                            window.remove_window();
 2274                            true
 2275                        } else {
 2276                            false
 2277                        }
 2278                    })
 2279                    .unwrap_or(false)
 2280            });
 2281        });
 2282    }
 2283
 2284    pub fn close_window(&mut self, _: &CloseWindow, window: &mut Window, cx: &mut Context<Self>) {
 2285        let prepare = self.prepare_to_close(CloseIntent::CloseWindow, window, cx);
 2286        cx.spawn_in(window, async move |_, cx| {
 2287            if prepare.await? {
 2288                cx.update(|window, _cx| window.remove_window())?;
 2289            }
 2290            anyhow::Ok(())
 2291        })
 2292        .detach_and_log_err(cx)
 2293    }
 2294
 2295    pub fn move_focused_panel_to_next_position(
 2296        &mut self,
 2297        _: &MoveFocusedPanelToNextPosition,
 2298        window: &mut Window,
 2299        cx: &mut Context<Self>,
 2300    ) {
 2301        let docks = self.all_docks();
 2302        let active_dock = docks
 2303            .into_iter()
 2304            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 2305
 2306        if let Some(dock) = active_dock {
 2307            dock.update(cx, |dock, cx| {
 2308                let active_panel = dock
 2309                    .active_panel()
 2310                    .filter(|panel| panel.panel_focus_handle(cx).contains_focused(window, cx));
 2311
 2312                if let Some(panel) = active_panel {
 2313                    panel.move_to_next_position(window, cx);
 2314                }
 2315            })
 2316        }
 2317    }
 2318
 2319    pub fn prepare_to_close(
 2320        &mut self,
 2321        close_intent: CloseIntent,
 2322        window: &mut Window,
 2323        cx: &mut Context<Self>,
 2324    ) -> Task<Result<bool>> {
 2325        let active_call = self.active_call().cloned();
 2326
 2327        // On Linux and Windows, closing the last window should restore the last workspace.
 2328        let save_last_workspace = cfg!(not(target_os = "macos"))
 2329            && close_intent != CloseIntent::ReplaceWindow
 2330            && cx.windows().len() == 1;
 2331
 2332        cx.spawn_in(window, async move |this, cx| {
 2333            let workspace_count = cx.update(|_window, cx| {
 2334                cx.windows()
 2335                    .iter()
 2336                    .filter(|window| window.downcast::<Workspace>().is_some())
 2337                    .count()
 2338            })?;
 2339
 2340            if let Some(active_call) = active_call
 2341                && workspace_count == 1
 2342                && active_call.read_with(cx, |call, _| call.room().is_some())?
 2343            {
 2344                if close_intent == CloseIntent::CloseWindow {
 2345                    let answer = cx.update(|window, cx| {
 2346                        window.prompt(
 2347                            PromptLevel::Warning,
 2348                            "Do you want to leave the current call?",
 2349                            None,
 2350                            &["Close window and hang up", "Cancel"],
 2351                            cx,
 2352                        )
 2353                    })?;
 2354
 2355                    if answer.await.log_err() == Some(1) {
 2356                        return anyhow::Ok(false);
 2357                    } else {
 2358                        active_call
 2359                            .update(cx, |call, cx| call.hang_up(cx))?
 2360                            .await
 2361                            .log_err();
 2362                    }
 2363                }
 2364                if close_intent == CloseIntent::ReplaceWindow {
 2365                    _ = active_call.update(cx, |this, cx| {
 2366                        let workspace = cx
 2367                            .windows()
 2368                            .iter()
 2369                            .filter_map(|window| window.downcast::<Workspace>())
 2370                            .next()
 2371                            .unwrap();
 2372                        let project = workspace.read(cx)?.project.clone();
 2373                        if project.read(cx).is_shared() {
 2374                            this.unshare_project(project, cx)?;
 2375                        }
 2376                        Ok::<_, anyhow::Error>(())
 2377                    })?;
 2378                }
 2379            }
 2380
 2381            let save_result = this
 2382                .update_in(cx, |this, window, cx| {
 2383                    this.save_all_internal(SaveIntent::Close, window, cx)
 2384                })?
 2385                .await;
 2386
 2387            // If we're not quitting, but closing, we remove the workspace from
 2388            // the current session.
 2389            if close_intent != CloseIntent::Quit
 2390                && !save_last_workspace
 2391                && save_result.as_ref().is_ok_and(|&res| res)
 2392            {
 2393                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))?
 2394                    .await;
 2395            }
 2396
 2397            save_result
 2398        })
 2399    }
 2400
 2401    fn save_all(&mut self, action: &SaveAll, window: &mut Window, cx: &mut Context<Self>) {
 2402        self.save_all_internal(
 2403            action.save_intent.unwrap_or(SaveIntent::SaveAll),
 2404            window,
 2405            cx,
 2406        )
 2407        .detach_and_log_err(cx);
 2408    }
 2409
 2410    fn send_keystrokes(
 2411        &mut self,
 2412        action: &SendKeystrokes,
 2413        window: &mut Window,
 2414        cx: &mut Context<Self>,
 2415    ) {
 2416        let keystrokes: Vec<Keystroke> = action
 2417            .0
 2418            .split(' ')
 2419            .flat_map(|k| Keystroke::parse(k).log_err())
 2420            .collect();
 2421        let _ = self.send_keystrokes_impl(keystrokes, window, cx);
 2422    }
 2423
 2424    pub fn send_keystrokes_impl(
 2425        &mut self,
 2426        keystrokes: Vec<Keystroke>,
 2427        window: &mut Window,
 2428        cx: &mut Context<Self>,
 2429    ) -> Shared<Task<()>> {
 2430        let mut state = self.dispatching_keystrokes.borrow_mut();
 2431        if !state.dispatched.insert(keystrokes.clone()) {
 2432            cx.propagate();
 2433            return state.task.clone().unwrap();
 2434        }
 2435
 2436        state.queue.extend(keystrokes);
 2437
 2438        let keystrokes = self.dispatching_keystrokes.clone();
 2439        if state.task.is_none() {
 2440            state.task = Some(
 2441                window
 2442                    .spawn(cx, async move |cx| {
 2443                        // limit to 100 keystrokes to avoid infinite recursion.
 2444                        for _ in 0..100 {
 2445                            let mut state = keystrokes.borrow_mut();
 2446                            let Some(keystroke) = state.queue.pop_front() else {
 2447                                state.dispatched.clear();
 2448                                state.task.take();
 2449                                return;
 2450                            };
 2451                            drop(state);
 2452                            cx.update(|window, cx| {
 2453                                let focused = window.focused(cx);
 2454                                window.dispatch_keystroke(keystroke.clone(), cx);
 2455                                if window.focused(cx) != focused {
 2456                                    // dispatch_keystroke may cause the focus to change.
 2457                                    // draw's side effect is to schedule the FocusChanged events in the current flush effect cycle
 2458                                    // And we need that to happen before the next keystroke to keep vim mode happy...
 2459                                    // (Note that the tests always do this implicitly, so you must manually test with something like:
 2460                                    //   "bindings": { "g z": ["workspace::SendKeystrokes", ": j <enter> u"]}
 2461                                    // )
 2462                                    window.draw(cx).clear();
 2463                                }
 2464                            })
 2465                            .ok();
 2466                        }
 2467
 2468                        *keystrokes.borrow_mut() = Default::default();
 2469                        log::error!("over 100 keystrokes passed to send_keystrokes");
 2470                    })
 2471                    .shared(),
 2472            );
 2473        }
 2474        state.task.clone().unwrap()
 2475    }
 2476
 2477    fn save_all_internal(
 2478        &mut self,
 2479        mut save_intent: SaveIntent,
 2480        window: &mut Window,
 2481        cx: &mut Context<Self>,
 2482    ) -> Task<Result<bool>> {
 2483        if self.project.read(cx).is_disconnected(cx) {
 2484            return Task::ready(Ok(true));
 2485        }
 2486        let dirty_items = self
 2487            .panes
 2488            .iter()
 2489            .flat_map(|pane| {
 2490                pane.read(cx).items().filter_map(|item| {
 2491                    if item.is_dirty(cx) {
 2492                        item.tab_content_text(0, cx);
 2493                        Some((pane.downgrade(), item.boxed_clone()))
 2494                    } else {
 2495                        None
 2496                    }
 2497                })
 2498            })
 2499            .collect::<Vec<_>>();
 2500
 2501        let project = self.project.clone();
 2502        cx.spawn_in(window, async move |workspace, cx| {
 2503            let dirty_items = if save_intent == SaveIntent::Close && !dirty_items.is_empty() {
 2504                let (serialize_tasks, remaining_dirty_items) =
 2505                    workspace.update_in(cx, |workspace, window, cx| {
 2506                        let mut remaining_dirty_items = Vec::new();
 2507                        let mut serialize_tasks = Vec::new();
 2508                        for (pane, item) in dirty_items {
 2509                            if let Some(task) = item
 2510                                .to_serializable_item_handle(cx)
 2511                                .and_then(|handle| handle.serialize(workspace, true, window, cx))
 2512                            {
 2513                                serialize_tasks.push(task);
 2514                            } else {
 2515                                remaining_dirty_items.push((pane, item));
 2516                            }
 2517                        }
 2518                        (serialize_tasks, remaining_dirty_items)
 2519                    })?;
 2520
 2521                futures::future::try_join_all(serialize_tasks).await?;
 2522
 2523                if remaining_dirty_items.len() > 1 {
 2524                    let answer = workspace.update_in(cx, |_, window, cx| {
 2525                        let detail = Pane::file_names_for_prompt(
 2526                            &mut remaining_dirty_items.iter().map(|(_, handle)| handle),
 2527                            cx,
 2528                        );
 2529                        window.prompt(
 2530                            PromptLevel::Warning,
 2531                            "Do you want to save all changes in the following files?",
 2532                            Some(&detail),
 2533                            &["Save all", "Discard all", "Cancel"],
 2534                            cx,
 2535                        )
 2536                    })?;
 2537                    match answer.await.log_err() {
 2538                        Some(0) => save_intent = SaveIntent::SaveAll,
 2539                        Some(1) => save_intent = SaveIntent::Skip,
 2540                        Some(2) => return Ok(false),
 2541                        _ => {}
 2542                    }
 2543                }
 2544
 2545                remaining_dirty_items
 2546            } else {
 2547                dirty_items
 2548            };
 2549
 2550            for (pane, item) in dirty_items {
 2551                let (singleton, project_entry_ids) = cx.update(|_, cx| {
 2552                    (
 2553                        item.buffer_kind(cx) == ItemBufferKind::Singleton,
 2554                        item.project_entry_ids(cx),
 2555                    )
 2556                })?;
 2557                if (singleton || !project_entry_ids.is_empty())
 2558                    && !Pane::save_item(project.clone(), &pane, &*item, save_intent, cx).await?
 2559                {
 2560                    return Ok(false);
 2561                }
 2562            }
 2563            Ok(true)
 2564        })
 2565    }
 2566
 2567    pub fn open_workspace_for_paths(
 2568        &mut self,
 2569        replace_current_window: bool,
 2570        paths: Vec<PathBuf>,
 2571        window: &mut Window,
 2572        cx: &mut Context<Self>,
 2573    ) -> Task<Result<()>> {
 2574        let window_handle = window.window_handle().downcast::<Self>();
 2575        let is_remote = self.project.read(cx).is_via_collab();
 2576        let has_worktree = self.project.read(cx).worktrees(cx).next().is_some();
 2577        let has_dirty_items = self.items(cx).any(|item| item.is_dirty(cx));
 2578
 2579        let window_to_replace = if replace_current_window {
 2580            window_handle
 2581        } else if is_remote || has_worktree || has_dirty_items {
 2582            None
 2583        } else {
 2584            window_handle
 2585        };
 2586        let app_state = self.app_state.clone();
 2587
 2588        cx.spawn(async move |_, cx| {
 2589            cx.update(|cx| {
 2590                open_paths(
 2591                    &paths,
 2592                    app_state,
 2593                    OpenOptions {
 2594                        replace_window: window_to_replace,
 2595                        ..Default::default()
 2596                    },
 2597                    cx,
 2598                )
 2599            })?
 2600            .await?;
 2601            Ok(())
 2602        })
 2603    }
 2604
 2605    #[allow(clippy::type_complexity)]
 2606    pub fn open_paths(
 2607        &mut self,
 2608        mut abs_paths: Vec<PathBuf>,
 2609        options: OpenOptions,
 2610        pane: Option<WeakEntity<Pane>>,
 2611        window: &mut Window,
 2612        cx: &mut Context<Self>,
 2613    ) -> Task<Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>> {
 2614        let fs = self.app_state.fs.clone();
 2615
 2616        // Sort the paths to ensure we add worktrees for parents before their children.
 2617        abs_paths.sort_unstable();
 2618        cx.spawn_in(window, async move |this, cx| {
 2619            let mut tasks = Vec::with_capacity(abs_paths.len());
 2620
 2621            for abs_path in &abs_paths {
 2622                let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
 2623                    OpenVisible::All => Some(true),
 2624                    OpenVisible::None => Some(false),
 2625                    OpenVisible::OnlyFiles => match fs.metadata(abs_path).await.log_err() {
 2626                        Some(Some(metadata)) => Some(!metadata.is_dir),
 2627                        Some(None) => Some(true),
 2628                        None => None,
 2629                    },
 2630                    OpenVisible::OnlyDirectories => match fs.metadata(abs_path).await.log_err() {
 2631                        Some(Some(metadata)) => Some(metadata.is_dir),
 2632                        Some(None) => Some(false),
 2633                        None => None,
 2634                    },
 2635                };
 2636                let project_path = match visible {
 2637                    Some(visible) => match this
 2638                        .update(cx, |this, cx| {
 2639                            Workspace::project_path_for_path(
 2640                                this.project.clone(),
 2641                                abs_path,
 2642                                visible,
 2643                                cx,
 2644                            )
 2645                        })
 2646                        .log_err()
 2647                    {
 2648                        Some(project_path) => project_path.await.log_err(),
 2649                        None => None,
 2650                    },
 2651                    None => None,
 2652                };
 2653
 2654                let this = this.clone();
 2655                let abs_path: Arc<Path> = SanitizedPath::new(&abs_path).as_path().into();
 2656                let fs = fs.clone();
 2657                let pane = pane.clone();
 2658                let task = cx.spawn(async move |cx| {
 2659                    let (worktree, project_path) = project_path?;
 2660                    if fs.is_dir(&abs_path).await {
 2661                        this.update(cx, |workspace, cx| {
 2662                            let worktree = worktree.read(cx);
 2663                            let worktree_abs_path = worktree.abs_path();
 2664                            let entry_id = if abs_path.as_ref() == worktree_abs_path.as_ref() {
 2665                                worktree.root_entry()
 2666                            } else {
 2667                                abs_path
 2668                                    .strip_prefix(worktree_abs_path.as_ref())
 2669                                    .ok()
 2670                                    .and_then(|relative_path| {
 2671                                        let relative_path =
 2672                                            RelPath::new(relative_path, PathStyle::local())
 2673                                                .log_err()?;
 2674                                        worktree.entry_for_path(&relative_path)
 2675                                    })
 2676                            }
 2677                            .map(|entry| entry.id);
 2678                            if let Some(entry_id) = entry_id {
 2679                                workspace.project.update(cx, |_, cx| {
 2680                                    cx.emit(project::Event::ActiveEntryChanged(Some(entry_id)));
 2681                                })
 2682                            }
 2683                        })
 2684                        .ok()?;
 2685                        None
 2686                    } else {
 2687                        Some(
 2688                            this.update_in(cx, |this, window, cx| {
 2689                                this.open_path(
 2690                                    project_path,
 2691                                    pane,
 2692                                    options.focus.unwrap_or(true),
 2693                                    window,
 2694                                    cx,
 2695                                )
 2696                            })
 2697                            .ok()?
 2698                            .await,
 2699                        )
 2700                    }
 2701                });
 2702                tasks.push(task);
 2703            }
 2704
 2705            futures::future::join_all(tasks).await
 2706        })
 2707    }
 2708
 2709    pub fn open_resolved_path(
 2710        &mut self,
 2711        path: ResolvedPath,
 2712        window: &mut Window,
 2713        cx: &mut Context<Self>,
 2714    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 2715        match path {
 2716            ResolvedPath::ProjectPath { project_path, .. } => {
 2717                self.open_path(project_path, None, true, window, cx)
 2718            }
 2719            ResolvedPath::AbsPath { path, .. } => self.open_abs_path(
 2720                PathBuf::from(path),
 2721                OpenOptions {
 2722                    visible: Some(OpenVisible::None),
 2723                    ..Default::default()
 2724                },
 2725                window,
 2726                cx,
 2727            ),
 2728        }
 2729    }
 2730
 2731    pub fn absolute_path_of_worktree(
 2732        &self,
 2733        worktree_id: WorktreeId,
 2734        cx: &mut Context<Self>,
 2735    ) -> Option<PathBuf> {
 2736        self.project
 2737            .read(cx)
 2738            .worktree_for_id(worktree_id, cx)
 2739            // TODO: use `abs_path` or `root_dir`
 2740            .map(|wt| wt.read(cx).abs_path().as_ref().to_path_buf())
 2741    }
 2742
 2743    fn add_folder_to_project(
 2744        &mut self,
 2745        _: &AddFolderToProject,
 2746        window: &mut Window,
 2747        cx: &mut Context<Self>,
 2748    ) {
 2749        let project = self.project.read(cx);
 2750        if project.is_via_collab() {
 2751            self.show_error(
 2752                &anyhow!("You cannot add folders to someone else's project"),
 2753                cx,
 2754            );
 2755            return;
 2756        }
 2757        let paths = self.prompt_for_open_path(
 2758            PathPromptOptions {
 2759                files: false,
 2760                directories: true,
 2761                multiple: true,
 2762                prompt: None,
 2763            },
 2764            DirectoryLister::Project(self.project.clone()),
 2765            window,
 2766            cx,
 2767        );
 2768        cx.spawn_in(window, async move |this, cx| {
 2769            if let Some(paths) = paths.await.log_err().flatten() {
 2770                let results = this
 2771                    .update_in(cx, |this, window, cx| {
 2772                        this.open_paths(
 2773                            paths,
 2774                            OpenOptions {
 2775                                visible: Some(OpenVisible::All),
 2776                                ..Default::default()
 2777                            },
 2778                            None,
 2779                            window,
 2780                            cx,
 2781                        )
 2782                    })?
 2783                    .await;
 2784                for result in results.into_iter().flatten() {
 2785                    result.log_err();
 2786                }
 2787            }
 2788            anyhow::Ok(())
 2789        })
 2790        .detach_and_log_err(cx);
 2791    }
 2792
 2793    pub fn project_path_for_path(
 2794        project: Entity<Project>,
 2795        abs_path: &Path,
 2796        visible: bool,
 2797        cx: &mut App,
 2798    ) -> Task<Result<(Entity<Worktree>, ProjectPath)>> {
 2799        let entry = project.update(cx, |project, cx| {
 2800            project.find_or_create_worktree(abs_path, visible, cx)
 2801        });
 2802        cx.spawn(async move |cx| {
 2803            let (worktree, path) = entry.await?;
 2804            let worktree_id = worktree.read_with(cx, |t, _| t.id())?;
 2805            Ok((
 2806                worktree,
 2807                ProjectPath {
 2808                    worktree_id,
 2809                    path: path,
 2810                },
 2811            ))
 2812        })
 2813    }
 2814
 2815    pub fn items<'a>(&'a self, cx: &'a App) -> impl 'a + Iterator<Item = &'a Box<dyn ItemHandle>> {
 2816        self.panes.iter().flat_map(|pane| pane.read(cx).items())
 2817    }
 2818
 2819    pub fn item_of_type<T: Item>(&self, cx: &App) -> Option<Entity<T>> {
 2820        self.items_of_type(cx).max_by_key(|item| item.item_id())
 2821    }
 2822
 2823    pub fn items_of_type<'a, T: Item>(
 2824        &'a self,
 2825        cx: &'a App,
 2826    ) -> impl 'a + Iterator<Item = Entity<T>> {
 2827        self.panes
 2828            .iter()
 2829            .flat_map(|pane| pane.read(cx).items_of_type())
 2830    }
 2831
 2832    pub fn active_item(&self, cx: &App) -> Option<Box<dyn ItemHandle>> {
 2833        self.active_pane().read(cx).active_item()
 2834    }
 2835
 2836    pub fn active_item_as<I: 'static>(&self, cx: &App) -> Option<Entity<I>> {
 2837        let item = self.active_item(cx)?;
 2838        item.to_any().downcast::<I>().ok()
 2839    }
 2840
 2841    fn active_project_path(&self, cx: &App) -> Option<ProjectPath> {
 2842        self.active_item(cx).and_then(|item| item.project_path(cx))
 2843    }
 2844
 2845    pub fn most_recent_active_path(&self, cx: &App) -> Option<PathBuf> {
 2846        self.recent_navigation_history_iter(cx)
 2847            .filter_map(|(path, abs_path)| {
 2848                let worktree = self
 2849                    .project
 2850                    .read(cx)
 2851                    .worktree_for_id(path.worktree_id, cx)?;
 2852                if worktree.read(cx).is_visible() {
 2853                    abs_path
 2854                } else {
 2855                    None
 2856                }
 2857            })
 2858            .next()
 2859    }
 2860
 2861    pub fn save_active_item(
 2862        &mut self,
 2863        save_intent: SaveIntent,
 2864        window: &mut Window,
 2865        cx: &mut App,
 2866    ) -> Task<Result<()>> {
 2867        let project = self.project.clone();
 2868        let pane = self.active_pane();
 2869        let item = pane.read(cx).active_item();
 2870        let pane = pane.downgrade();
 2871
 2872        window.spawn(cx, async move |cx| {
 2873            if let Some(item) = item {
 2874                Pane::save_item(project, &pane, item.as_ref(), save_intent, cx)
 2875                    .await
 2876                    .map(|_| ())
 2877            } else {
 2878                Ok(())
 2879            }
 2880        })
 2881    }
 2882
 2883    pub fn close_inactive_items_and_panes(
 2884        &mut self,
 2885        action: &CloseInactiveTabsAndPanes,
 2886        window: &mut Window,
 2887        cx: &mut Context<Self>,
 2888    ) {
 2889        if let Some(task) = self.close_all_internal(
 2890            true,
 2891            action.save_intent.unwrap_or(SaveIntent::Close),
 2892            window,
 2893            cx,
 2894        ) {
 2895            task.detach_and_log_err(cx)
 2896        }
 2897    }
 2898
 2899    pub fn close_all_items_and_panes(
 2900        &mut self,
 2901        action: &CloseAllItemsAndPanes,
 2902        window: &mut Window,
 2903        cx: &mut Context<Self>,
 2904    ) {
 2905        if let Some(task) = self.close_all_internal(
 2906            false,
 2907            action.save_intent.unwrap_or(SaveIntent::Close),
 2908            window,
 2909            cx,
 2910        ) {
 2911            task.detach_and_log_err(cx)
 2912        }
 2913    }
 2914
 2915    fn close_all_internal(
 2916        &mut self,
 2917        retain_active_pane: bool,
 2918        save_intent: SaveIntent,
 2919        window: &mut Window,
 2920        cx: &mut Context<Self>,
 2921    ) -> Option<Task<Result<()>>> {
 2922        let current_pane = self.active_pane();
 2923
 2924        let mut tasks = Vec::new();
 2925
 2926        if retain_active_pane {
 2927            let current_pane_close = current_pane.update(cx, |pane, cx| {
 2928                pane.close_other_items(
 2929                    &CloseOtherItems {
 2930                        save_intent: None,
 2931                        close_pinned: false,
 2932                    },
 2933                    None,
 2934                    window,
 2935                    cx,
 2936                )
 2937            });
 2938
 2939            tasks.push(current_pane_close);
 2940        }
 2941
 2942        for pane in self.panes() {
 2943            if retain_active_pane && pane.entity_id() == current_pane.entity_id() {
 2944                continue;
 2945            }
 2946
 2947            let close_pane_items = pane.update(cx, |pane: &mut Pane, cx| {
 2948                pane.close_all_items(
 2949                    &CloseAllItems {
 2950                        save_intent: Some(save_intent),
 2951                        close_pinned: false,
 2952                    },
 2953                    window,
 2954                    cx,
 2955                )
 2956            });
 2957
 2958            tasks.push(close_pane_items)
 2959        }
 2960
 2961        if tasks.is_empty() {
 2962            None
 2963        } else {
 2964            Some(cx.spawn_in(window, async move |_, _| {
 2965                for task in tasks {
 2966                    task.await?
 2967                }
 2968                Ok(())
 2969            }))
 2970        }
 2971    }
 2972
 2973    pub fn is_dock_at_position_open(&self, position: DockPosition, cx: &mut Context<Self>) -> bool {
 2974        self.dock_at_position(position).read(cx).is_open()
 2975    }
 2976
 2977    pub fn toggle_dock(
 2978        &mut self,
 2979        dock_side: DockPosition,
 2980        window: &mut Window,
 2981        cx: &mut Context<Self>,
 2982    ) {
 2983        let dock = self.dock_at_position(dock_side);
 2984        let mut focus_center = false;
 2985        let mut reveal_dock = false;
 2986        dock.update(cx, |dock, cx| {
 2987            let other_is_zoomed = self.zoomed.is_some() && self.zoomed_position != Some(dock_side);
 2988            let was_visible = dock.is_open() && !other_is_zoomed;
 2989            dock.set_open(!was_visible, window, cx);
 2990
 2991            if dock.active_panel().is_none() {
 2992                let Some(panel_ix) = dock
 2993                    .first_enabled_panel_idx(cx)
 2994                    .log_with_level(log::Level::Info)
 2995                else {
 2996                    return;
 2997                };
 2998                dock.activate_panel(panel_ix, window, cx);
 2999            }
 3000
 3001            if let Some(active_panel) = dock.active_panel() {
 3002                if was_visible {
 3003                    if active_panel
 3004                        .panel_focus_handle(cx)
 3005                        .contains_focused(window, cx)
 3006                    {
 3007                        focus_center = true;
 3008                    }
 3009                } else {
 3010                    let focus_handle = &active_panel.panel_focus_handle(cx);
 3011                    window.focus(focus_handle);
 3012                    reveal_dock = true;
 3013                }
 3014            }
 3015        });
 3016
 3017        if reveal_dock {
 3018            self.dismiss_zoomed_items_to_reveal(Some(dock_side), window, cx);
 3019        }
 3020
 3021        if focus_center {
 3022            self.active_pane
 3023                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3024        }
 3025
 3026        cx.notify();
 3027        self.serialize_workspace(window, cx);
 3028    }
 3029
 3030    fn active_dock(&self, window: &Window, cx: &Context<Self>) -> Option<&Entity<Dock>> {
 3031        self.all_docks().into_iter().find(|&dock| {
 3032            dock.read(cx).is_open() && dock.focus_handle(cx).contains_focused(window, cx)
 3033        })
 3034    }
 3035
 3036    fn close_active_dock(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
 3037        if let Some(dock) = self.active_dock(window, cx) {
 3038            dock.update(cx, |dock, cx| {
 3039                dock.set_open(false, window, cx);
 3040            });
 3041            return true;
 3042        }
 3043        false
 3044    }
 3045
 3046    pub fn close_all_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3047        for dock in self.all_docks() {
 3048            dock.update(cx, |dock, cx| {
 3049                dock.set_open(false, window, cx);
 3050            });
 3051        }
 3052
 3053        cx.focus_self(window);
 3054        cx.notify();
 3055        self.serialize_workspace(window, cx);
 3056    }
 3057
 3058    /// Transfer focus to the panel of the given type.
 3059    pub fn focus_panel<T: Panel>(
 3060        &mut self,
 3061        window: &mut Window,
 3062        cx: &mut Context<Self>,
 3063    ) -> Option<Entity<T>> {
 3064        let panel = self.focus_or_unfocus_panel::<T>(window, cx, |_, _, _| true)?;
 3065        panel.to_any().downcast().ok()
 3066    }
 3067
 3068    /// Focus the panel of the given type if it isn't already focused. If it is
 3069    /// already focused, then transfer focus back to the workspace center.
 3070    pub fn toggle_panel_focus<T: Panel>(
 3071        &mut self,
 3072        window: &mut Window,
 3073        cx: &mut Context<Self>,
 3074    ) -> bool {
 3075        let mut did_focus_panel = false;
 3076        self.focus_or_unfocus_panel::<T>(window, cx, |panel, window, cx| {
 3077            did_focus_panel = !panel.panel_focus_handle(cx).contains_focused(window, cx);
 3078            did_focus_panel
 3079        });
 3080        did_focus_panel
 3081    }
 3082
 3083    pub fn activate_panel_for_proto_id(
 3084        &mut self,
 3085        panel_id: PanelId,
 3086        window: &mut Window,
 3087        cx: &mut Context<Self>,
 3088    ) -> Option<Arc<dyn PanelHandle>> {
 3089        let mut panel = None;
 3090        for dock in self.all_docks() {
 3091            if let Some(panel_index) = dock.read(cx).panel_index_for_proto_id(panel_id) {
 3092                panel = dock.update(cx, |dock, cx| {
 3093                    dock.activate_panel(panel_index, window, cx);
 3094                    dock.set_open(true, window, cx);
 3095                    dock.active_panel().cloned()
 3096                });
 3097                break;
 3098            }
 3099        }
 3100
 3101        if panel.is_some() {
 3102            cx.notify();
 3103            self.serialize_workspace(window, cx);
 3104        }
 3105
 3106        panel
 3107    }
 3108
 3109    /// Focus or unfocus the given panel type, depending on the given callback.
 3110    fn focus_or_unfocus_panel<T: Panel>(
 3111        &mut self,
 3112        window: &mut Window,
 3113        cx: &mut Context<Self>,
 3114        mut should_focus: impl FnMut(&dyn PanelHandle, &mut Window, &mut Context<Dock>) -> bool,
 3115    ) -> Option<Arc<dyn PanelHandle>> {
 3116        let mut result_panel = None;
 3117        let mut serialize = false;
 3118        for dock in self.all_docks() {
 3119            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3120                let mut focus_center = false;
 3121                let panel = dock.update(cx, |dock, cx| {
 3122                    dock.activate_panel(panel_index, window, cx);
 3123
 3124                    let panel = dock.active_panel().cloned();
 3125                    if let Some(panel) = panel.as_ref() {
 3126                        if should_focus(&**panel, window, cx) {
 3127                            dock.set_open(true, window, cx);
 3128                            panel.panel_focus_handle(cx).focus(window);
 3129                        } else {
 3130                            focus_center = true;
 3131                        }
 3132                    }
 3133                    panel
 3134                });
 3135
 3136                if focus_center {
 3137                    self.active_pane
 3138                        .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3139                }
 3140
 3141                result_panel = panel;
 3142                serialize = true;
 3143                break;
 3144            }
 3145        }
 3146
 3147        if serialize {
 3148            self.serialize_workspace(window, cx);
 3149        }
 3150
 3151        cx.notify();
 3152        result_panel
 3153    }
 3154
 3155    /// Open the panel of the given type
 3156    pub fn open_panel<T: Panel>(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3157        for dock in self.all_docks() {
 3158            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3159                dock.update(cx, |dock, cx| {
 3160                    dock.activate_panel(panel_index, window, cx);
 3161                    dock.set_open(true, window, cx);
 3162                });
 3163            }
 3164        }
 3165    }
 3166
 3167    pub fn close_panel<T: Panel>(&self, window: &mut Window, cx: &mut Context<Self>) {
 3168        for dock in self.all_docks().iter() {
 3169            dock.update(cx, |dock, cx| {
 3170                if dock.panel::<T>().is_some() {
 3171                    dock.set_open(false, window, cx)
 3172                }
 3173            })
 3174        }
 3175    }
 3176
 3177    pub fn panel<T: Panel>(&self, cx: &App) -> Option<Entity<T>> {
 3178        self.all_docks()
 3179            .iter()
 3180            .find_map(|dock| dock.read(cx).panel::<T>())
 3181    }
 3182
 3183    fn dismiss_zoomed_items_to_reveal(
 3184        &mut self,
 3185        dock_to_reveal: Option<DockPosition>,
 3186        window: &mut Window,
 3187        cx: &mut Context<Self>,
 3188    ) {
 3189        // If a center pane is zoomed, unzoom it.
 3190        for pane in &self.panes {
 3191            if pane != &self.active_pane || dock_to_reveal.is_some() {
 3192                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 3193            }
 3194        }
 3195
 3196        // If another dock is zoomed, hide it.
 3197        let mut focus_center = false;
 3198        for dock in self.all_docks() {
 3199            dock.update(cx, |dock, cx| {
 3200                if Some(dock.position()) != dock_to_reveal
 3201                    && let Some(panel) = dock.active_panel()
 3202                    && panel.is_zoomed(window, cx)
 3203                {
 3204                    focus_center |= panel.panel_focus_handle(cx).contains_focused(window, cx);
 3205                    dock.set_open(false, window, cx);
 3206                }
 3207            });
 3208        }
 3209
 3210        if focus_center {
 3211            self.active_pane
 3212                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3213        }
 3214
 3215        if self.zoomed_position != dock_to_reveal {
 3216            self.zoomed = None;
 3217            self.zoomed_position = None;
 3218            cx.emit(Event::ZoomChanged);
 3219        }
 3220
 3221        cx.notify();
 3222    }
 3223
 3224    fn add_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 3225        let pane = cx.new(|cx| {
 3226            let mut pane = Pane::new(
 3227                self.weak_handle(),
 3228                self.project.clone(),
 3229                self.pane_history_timestamp.clone(),
 3230                None,
 3231                NewFile.boxed_clone(),
 3232                window,
 3233                cx,
 3234            );
 3235            pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 3236            pane
 3237        });
 3238        cx.subscribe_in(&pane, window, Self::handle_pane_event)
 3239            .detach();
 3240        self.panes.push(pane.clone());
 3241
 3242        window.focus(&pane.focus_handle(cx));
 3243
 3244        cx.emit(Event::PaneAdded(pane.clone()));
 3245        pane
 3246    }
 3247
 3248    pub fn add_item_to_center(
 3249        &mut self,
 3250        item: Box<dyn ItemHandle>,
 3251        window: &mut Window,
 3252        cx: &mut Context<Self>,
 3253    ) -> bool {
 3254        if let Some(center_pane) = self.last_active_center_pane.clone() {
 3255            if let Some(center_pane) = center_pane.upgrade() {
 3256                center_pane.update(cx, |pane, cx| {
 3257                    pane.add_item(item, true, true, None, window, cx)
 3258                });
 3259                true
 3260            } else {
 3261                false
 3262            }
 3263        } else {
 3264            false
 3265        }
 3266    }
 3267
 3268    pub fn add_item_to_active_pane(
 3269        &mut self,
 3270        item: Box<dyn ItemHandle>,
 3271        destination_index: Option<usize>,
 3272        focus_item: bool,
 3273        window: &mut Window,
 3274        cx: &mut App,
 3275    ) {
 3276        self.add_item(
 3277            self.active_pane.clone(),
 3278            item,
 3279            destination_index,
 3280            false,
 3281            focus_item,
 3282            window,
 3283            cx,
 3284        )
 3285    }
 3286
 3287    pub fn add_item(
 3288        &mut self,
 3289        pane: Entity<Pane>,
 3290        item: Box<dyn ItemHandle>,
 3291        destination_index: Option<usize>,
 3292        activate_pane: bool,
 3293        focus_item: bool,
 3294        window: &mut Window,
 3295        cx: &mut App,
 3296    ) {
 3297        pane.update(cx, |pane, cx| {
 3298            pane.add_item(
 3299                item,
 3300                activate_pane,
 3301                focus_item,
 3302                destination_index,
 3303                window,
 3304                cx,
 3305            )
 3306        });
 3307    }
 3308
 3309    pub fn split_item(
 3310        &mut self,
 3311        split_direction: SplitDirection,
 3312        item: Box<dyn ItemHandle>,
 3313        window: &mut Window,
 3314        cx: &mut Context<Self>,
 3315    ) {
 3316        let new_pane = self.split_pane(self.active_pane.clone(), split_direction, window, cx);
 3317        self.add_item(new_pane, item, None, true, true, window, cx);
 3318    }
 3319
 3320    pub fn open_abs_path(
 3321        &mut self,
 3322        abs_path: PathBuf,
 3323        options: OpenOptions,
 3324        window: &mut Window,
 3325        cx: &mut Context<Self>,
 3326    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3327        cx.spawn_in(window, async move |workspace, cx| {
 3328            let open_paths_task_result = workspace
 3329                .update_in(cx, |workspace, window, cx| {
 3330                    workspace.open_paths(vec![abs_path.clone()], options, None, window, cx)
 3331                })
 3332                .with_context(|| format!("open abs path {abs_path:?} task spawn"))?
 3333                .await;
 3334            anyhow::ensure!(
 3335                open_paths_task_result.len() == 1,
 3336                "open abs path {abs_path:?} task returned incorrect number of results"
 3337            );
 3338            match open_paths_task_result
 3339                .into_iter()
 3340                .next()
 3341                .expect("ensured single task result")
 3342            {
 3343                Some(open_result) => {
 3344                    open_result.with_context(|| format!("open abs path {abs_path:?} task join"))
 3345                }
 3346                None => anyhow::bail!("open abs path {abs_path:?} task returned None"),
 3347            }
 3348        })
 3349    }
 3350
 3351    pub fn split_abs_path(
 3352        &mut self,
 3353        abs_path: PathBuf,
 3354        visible: bool,
 3355        window: &mut Window,
 3356        cx: &mut Context<Self>,
 3357    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3358        let project_path_task =
 3359            Workspace::project_path_for_path(self.project.clone(), &abs_path, visible, cx);
 3360        cx.spawn_in(window, async move |this, cx| {
 3361            let (_, path) = project_path_task.await?;
 3362            this.update_in(cx, |this, window, cx| this.split_path(path, window, cx))?
 3363                .await
 3364        })
 3365    }
 3366
 3367    pub fn open_path(
 3368        &mut self,
 3369        path: impl Into<ProjectPath>,
 3370        pane: Option<WeakEntity<Pane>>,
 3371        focus_item: bool,
 3372        window: &mut Window,
 3373        cx: &mut App,
 3374    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3375        self.open_path_preview(path, pane, focus_item, false, true, window, cx)
 3376    }
 3377
 3378    pub fn open_path_preview(
 3379        &mut self,
 3380        path: impl Into<ProjectPath>,
 3381        pane: Option<WeakEntity<Pane>>,
 3382        focus_item: bool,
 3383        allow_preview: bool,
 3384        activate: bool,
 3385        window: &mut Window,
 3386        cx: &mut App,
 3387    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3388        let pane = pane.unwrap_or_else(|| {
 3389            self.last_active_center_pane.clone().unwrap_or_else(|| {
 3390                self.panes
 3391                    .first()
 3392                    .expect("There must be an active pane")
 3393                    .downgrade()
 3394            })
 3395        });
 3396
 3397        let project_path = path.into();
 3398        let task = self.load_path(project_path.clone(), window, cx);
 3399        window.spawn(cx, async move |cx| {
 3400            let (project_entry_id, build_item) = task.await?;
 3401
 3402            pane.update_in(cx, |pane, window, cx| {
 3403                pane.open_item(
 3404                    project_entry_id,
 3405                    project_path,
 3406                    focus_item,
 3407                    allow_preview,
 3408                    activate,
 3409                    None,
 3410                    window,
 3411                    cx,
 3412                    build_item,
 3413                )
 3414            })
 3415        })
 3416    }
 3417
 3418    pub fn split_path(
 3419        &mut self,
 3420        path: impl Into<ProjectPath>,
 3421        window: &mut Window,
 3422        cx: &mut Context<Self>,
 3423    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3424        self.split_path_preview(path, false, None, window, cx)
 3425    }
 3426
 3427    pub fn split_path_preview(
 3428        &mut self,
 3429        path: impl Into<ProjectPath>,
 3430        allow_preview: bool,
 3431        split_direction: Option<SplitDirection>,
 3432        window: &mut Window,
 3433        cx: &mut Context<Self>,
 3434    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3435        let pane = self.last_active_center_pane.clone().unwrap_or_else(|| {
 3436            self.panes
 3437                .first()
 3438                .expect("There must be an active pane")
 3439                .downgrade()
 3440        });
 3441
 3442        if let Member::Pane(center_pane) = &self.center.root
 3443            && center_pane.read(cx).items_len() == 0
 3444        {
 3445            return self.open_path(path, Some(pane), true, window, cx);
 3446        }
 3447
 3448        let project_path = path.into();
 3449        let task = self.load_path(project_path.clone(), window, cx);
 3450        cx.spawn_in(window, async move |this, cx| {
 3451            let (project_entry_id, build_item) = task.await?;
 3452            this.update_in(cx, move |this, window, cx| -> Option<_> {
 3453                let pane = pane.upgrade()?;
 3454                let new_pane = this.split_pane(
 3455                    pane,
 3456                    split_direction.unwrap_or(SplitDirection::Right),
 3457                    window,
 3458                    cx,
 3459                );
 3460                new_pane.update(cx, |new_pane, cx| {
 3461                    Some(new_pane.open_item(
 3462                        project_entry_id,
 3463                        project_path,
 3464                        true,
 3465                        allow_preview,
 3466                        true,
 3467                        None,
 3468                        window,
 3469                        cx,
 3470                        build_item,
 3471                    ))
 3472                })
 3473            })
 3474            .map(|option| option.context("pane was dropped"))?
 3475        })
 3476    }
 3477
 3478    fn load_path(
 3479        &mut self,
 3480        path: ProjectPath,
 3481        window: &mut Window,
 3482        cx: &mut App,
 3483    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
 3484        let registry = cx.default_global::<ProjectItemRegistry>().clone();
 3485        registry.open_path(self.project(), &path, window, cx)
 3486    }
 3487
 3488    pub fn find_project_item<T>(
 3489        &self,
 3490        pane: &Entity<Pane>,
 3491        project_item: &Entity<T::Item>,
 3492        cx: &App,
 3493    ) -> Option<Entity<T>>
 3494    where
 3495        T: ProjectItem,
 3496    {
 3497        use project::ProjectItem as _;
 3498        let project_item = project_item.read(cx);
 3499        let entry_id = project_item.entry_id(cx);
 3500        let project_path = project_item.project_path(cx);
 3501
 3502        let mut item = None;
 3503        if let Some(entry_id) = entry_id {
 3504            item = pane.read(cx).item_for_entry(entry_id, cx);
 3505        }
 3506        if item.is_none()
 3507            && let Some(project_path) = project_path
 3508        {
 3509            item = pane.read(cx).item_for_path(project_path, cx);
 3510        }
 3511
 3512        item.and_then(|item| item.downcast::<T>())
 3513    }
 3514
 3515    pub fn is_project_item_open<T>(
 3516        &self,
 3517        pane: &Entity<Pane>,
 3518        project_item: &Entity<T::Item>,
 3519        cx: &App,
 3520    ) -> bool
 3521    where
 3522        T: ProjectItem,
 3523    {
 3524        self.find_project_item::<T>(pane, project_item, cx)
 3525            .is_some()
 3526    }
 3527
 3528    pub fn open_project_item<T>(
 3529        &mut self,
 3530        pane: Entity<Pane>,
 3531        project_item: Entity<T::Item>,
 3532        activate_pane: bool,
 3533        focus_item: bool,
 3534        window: &mut Window,
 3535        cx: &mut Context<Self>,
 3536    ) -> Entity<T>
 3537    where
 3538        T: ProjectItem,
 3539    {
 3540        if let Some(item) = self.find_project_item(&pane, &project_item, cx) {
 3541            self.activate_item(&item, activate_pane, focus_item, window, cx);
 3542            return item;
 3543        }
 3544
 3545        let item = pane.update(cx, |pane, cx| {
 3546            cx.new(|cx| {
 3547                T::for_project_item(self.project().clone(), Some(pane), project_item, window, cx)
 3548            })
 3549        });
 3550        let item_id = item.item_id();
 3551        let mut destination_index = None;
 3552        pane.update(cx, |pane, cx| {
 3553            if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation
 3554                && let Some(preview_item_id) = pane.preview_item_id()
 3555                && preview_item_id != item_id
 3556            {
 3557                destination_index = pane.close_current_preview_item(window, cx);
 3558            }
 3559            pane.set_preview_item_id(Some(item.item_id()), cx)
 3560        });
 3561
 3562        self.add_item(
 3563            pane,
 3564            Box::new(item.clone()),
 3565            destination_index,
 3566            activate_pane,
 3567            focus_item,
 3568            window,
 3569            cx,
 3570        );
 3571        item
 3572    }
 3573
 3574    pub fn open_shared_screen(
 3575        &mut self,
 3576        peer_id: PeerId,
 3577        window: &mut Window,
 3578        cx: &mut Context<Self>,
 3579    ) {
 3580        if let Some(shared_screen) =
 3581            self.shared_screen_for_peer(peer_id, &self.active_pane, window, cx)
 3582        {
 3583            self.active_pane.update(cx, |pane, cx| {
 3584                pane.add_item(Box::new(shared_screen), false, true, None, window, cx)
 3585            });
 3586        }
 3587    }
 3588
 3589    pub fn activate_item(
 3590        &mut self,
 3591        item: &dyn ItemHandle,
 3592        activate_pane: bool,
 3593        focus_item: bool,
 3594        window: &mut Window,
 3595        cx: &mut App,
 3596    ) -> bool {
 3597        let result = self.panes.iter().find_map(|pane| {
 3598            pane.read(cx)
 3599                .index_for_item(item)
 3600                .map(|ix| (pane.clone(), ix))
 3601        });
 3602        if let Some((pane, ix)) = result {
 3603            pane.update(cx, |pane, cx| {
 3604                pane.activate_item(ix, activate_pane, focus_item, window, cx)
 3605            });
 3606            true
 3607        } else {
 3608            false
 3609        }
 3610    }
 3611
 3612    fn activate_pane_at_index(
 3613        &mut self,
 3614        action: &ActivatePane,
 3615        window: &mut Window,
 3616        cx: &mut Context<Self>,
 3617    ) {
 3618        let panes = self.center.panes();
 3619        if let Some(pane) = panes.get(action.0).map(|p| (*p).clone()) {
 3620            window.focus(&pane.focus_handle(cx));
 3621        } else {
 3622            self.split_and_clone(self.active_pane.clone(), SplitDirection::Right, window, cx);
 3623        }
 3624    }
 3625
 3626    fn move_item_to_pane_at_index(
 3627        &mut self,
 3628        action: &MoveItemToPane,
 3629        window: &mut Window,
 3630        cx: &mut Context<Self>,
 3631    ) {
 3632        let panes = self.center.panes();
 3633        let destination = match panes.get(action.destination) {
 3634            Some(&destination) => destination.clone(),
 3635            None => {
 3636                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3637                    return;
 3638                }
 3639                let direction = SplitDirection::Right;
 3640                let split_off_pane = self
 3641                    .find_pane_in_direction(direction, cx)
 3642                    .unwrap_or_else(|| self.active_pane.clone());
 3643                let new_pane = self.add_pane(window, cx);
 3644                if self
 3645                    .center
 3646                    .split(&split_off_pane, &new_pane, direction)
 3647                    .log_err()
 3648                    .is_none()
 3649                {
 3650                    return;
 3651                };
 3652                new_pane
 3653            }
 3654        };
 3655
 3656        if action.clone {
 3657            clone_active_item(
 3658                self.database_id(),
 3659                &self.active_pane,
 3660                &destination,
 3661                action.focus,
 3662                window,
 3663                cx,
 3664            )
 3665        } else {
 3666            move_active_item(
 3667                &self.active_pane,
 3668                &destination,
 3669                action.focus,
 3670                true,
 3671                window,
 3672                cx,
 3673            )
 3674        }
 3675    }
 3676
 3677    pub fn activate_next_pane(&mut self, window: &mut Window, cx: &mut App) {
 3678        let panes = self.center.panes();
 3679        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3680            let next_ix = (ix + 1) % panes.len();
 3681            let next_pane = panes[next_ix].clone();
 3682            window.focus(&next_pane.focus_handle(cx));
 3683        }
 3684    }
 3685
 3686    pub fn activate_previous_pane(&mut self, window: &mut Window, cx: &mut App) {
 3687        let panes = self.center.panes();
 3688        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3689            let prev_ix = cmp::min(ix.wrapping_sub(1), panes.len() - 1);
 3690            let prev_pane = panes[prev_ix].clone();
 3691            window.focus(&prev_pane.focus_handle(cx));
 3692        }
 3693    }
 3694
 3695    pub fn activate_pane_in_direction(
 3696        &mut self,
 3697        direction: SplitDirection,
 3698        window: &mut Window,
 3699        cx: &mut App,
 3700    ) {
 3701        use ActivateInDirectionTarget as Target;
 3702        enum Origin {
 3703            LeftDock,
 3704            RightDock,
 3705            BottomDock,
 3706            Center,
 3707        }
 3708
 3709        let origin: Origin = [
 3710            (&self.left_dock, Origin::LeftDock),
 3711            (&self.right_dock, Origin::RightDock),
 3712            (&self.bottom_dock, Origin::BottomDock),
 3713        ]
 3714        .into_iter()
 3715        .find_map(|(dock, origin)| {
 3716            if dock.focus_handle(cx).contains_focused(window, cx) && dock.read(cx).is_open() {
 3717                Some(origin)
 3718            } else {
 3719                None
 3720            }
 3721        })
 3722        .unwrap_or(Origin::Center);
 3723
 3724        let get_last_active_pane = || {
 3725            let pane = self
 3726                .last_active_center_pane
 3727                .clone()
 3728                .unwrap_or_else(|| {
 3729                    self.panes
 3730                        .first()
 3731                        .expect("There must be an active pane")
 3732                        .downgrade()
 3733                })
 3734                .upgrade()?;
 3735            (pane.read(cx).items_len() != 0).then_some(pane)
 3736        };
 3737
 3738        let try_dock =
 3739            |dock: &Entity<Dock>| dock.read(cx).is_open().then(|| Target::Dock(dock.clone()));
 3740
 3741        let target = match (origin, direction) {
 3742            // We're in the center, so we first try to go to a different pane,
 3743            // otherwise try to go to a dock.
 3744            (Origin::Center, direction) => {
 3745                if let Some(pane) = self.find_pane_in_direction(direction, cx) {
 3746                    Some(Target::Pane(pane))
 3747                } else {
 3748                    match direction {
 3749                        SplitDirection::Up => None,
 3750                        SplitDirection::Down => try_dock(&self.bottom_dock),
 3751                        SplitDirection::Left => try_dock(&self.left_dock),
 3752                        SplitDirection::Right => try_dock(&self.right_dock),
 3753                    }
 3754                }
 3755            }
 3756
 3757            (Origin::LeftDock, SplitDirection::Right) => {
 3758                if let Some(last_active_pane) = get_last_active_pane() {
 3759                    Some(Target::Pane(last_active_pane))
 3760                } else {
 3761                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.right_dock))
 3762                }
 3763            }
 3764
 3765            (Origin::LeftDock, SplitDirection::Down)
 3766            | (Origin::RightDock, SplitDirection::Down) => try_dock(&self.bottom_dock),
 3767
 3768            (Origin::BottomDock, SplitDirection::Up) => get_last_active_pane().map(Target::Pane),
 3769            (Origin::BottomDock, SplitDirection::Left) => try_dock(&self.left_dock),
 3770            (Origin::BottomDock, SplitDirection::Right) => try_dock(&self.right_dock),
 3771
 3772            (Origin::RightDock, SplitDirection::Left) => {
 3773                if let Some(last_active_pane) = get_last_active_pane() {
 3774                    Some(Target::Pane(last_active_pane))
 3775                } else {
 3776                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.left_dock))
 3777                }
 3778            }
 3779
 3780            _ => None,
 3781        };
 3782
 3783        match target {
 3784            Some(ActivateInDirectionTarget::Pane(pane)) => {
 3785                let pane = pane.read(cx);
 3786                if let Some(item) = pane.active_item() {
 3787                    item.item_focus_handle(cx).focus(window);
 3788                } else {
 3789                    log::error!(
 3790                        "Could not find a focus target when in switching focus in {direction} direction for a pane",
 3791                    );
 3792                }
 3793            }
 3794            Some(ActivateInDirectionTarget::Dock(dock)) => {
 3795                // Defer this to avoid a panic when the dock's active panel is already on the stack.
 3796                window.defer(cx, move |window, cx| {
 3797                    let dock = dock.read(cx);
 3798                    if let Some(panel) = dock.active_panel() {
 3799                        panel.panel_focus_handle(cx).focus(window);
 3800                    } else {
 3801                        log::error!("Could not find a focus target when in switching focus in {direction} direction for a {:?} dock", dock.position());
 3802                    }
 3803                })
 3804            }
 3805            None => {}
 3806        }
 3807    }
 3808
 3809    pub fn move_item_to_pane_in_direction(
 3810        &mut self,
 3811        action: &MoveItemToPaneInDirection,
 3812        window: &mut Window,
 3813        cx: &mut Context<Self>,
 3814    ) {
 3815        let destination = match self.find_pane_in_direction(action.direction, cx) {
 3816            Some(destination) => destination,
 3817            None => {
 3818                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3819                    return;
 3820                }
 3821                let new_pane = self.add_pane(window, cx);
 3822                if self
 3823                    .center
 3824                    .split(&self.active_pane, &new_pane, action.direction)
 3825                    .log_err()
 3826                    .is_none()
 3827                {
 3828                    return;
 3829                };
 3830                new_pane
 3831            }
 3832        };
 3833
 3834        if action.clone {
 3835            clone_active_item(
 3836                self.database_id(),
 3837                &self.active_pane,
 3838                &destination,
 3839                action.focus,
 3840                window,
 3841                cx,
 3842            )
 3843        } else {
 3844            move_active_item(
 3845                &self.active_pane,
 3846                &destination,
 3847                action.focus,
 3848                true,
 3849                window,
 3850                cx,
 3851            );
 3852        }
 3853    }
 3854
 3855    pub fn bounding_box_for_pane(&self, pane: &Entity<Pane>) -> Option<Bounds<Pixels>> {
 3856        self.center.bounding_box_for_pane(pane)
 3857    }
 3858
 3859    pub fn find_pane_in_direction(
 3860        &mut self,
 3861        direction: SplitDirection,
 3862        cx: &App,
 3863    ) -> Option<Entity<Pane>> {
 3864        self.center
 3865            .find_pane_in_direction(&self.active_pane, direction, cx)
 3866            .cloned()
 3867    }
 3868
 3869    pub fn swap_pane_in_direction(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 3870        if let Some(to) = self.find_pane_in_direction(direction, cx) {
 3871            self.center.swap(&self.active_pane, &to);
 3872            cx.notify();
 3873        }
 3874    }
 3875
 3876    pub fn move_pane_to_border(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 3877        if self
 3878            .center
 3879            .move_to_border(&self.active_pane, direction)
 3880            .unwrap()
 3881        {
 3882            cx.notify();
 3883        }
 3884    }
 3885
 3886    pub fn resize_pane(
 3887        &mut self,
 3888        axis: gpui::Axis,
 3889        amount: Pixels,
 3890        window: &mut Window,
 3891        cx: &mut Context<Self>,
 3892    ) {
 3893        let docks = self.all_docks();
 3894        let active_dock = docks
 3895            .into_iter()
 3896            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 3897
 3898        if let Some(dock) = active_dock {
 3899            let Some(panel_size) = dock.read(cx).active_panel_size(window, cx) else {
 3900                return;
 3901            };
 3902            match dock.read(cx).position() {
 3903                DockPosition::Left => self.resize_left_dock(panel_size + amount, window, cx),
 3904                DockPosition::Bottom => self.resize_bottom_dock(panel_size + amount, window, cx),
 3905                DockPosition::Right => self.resize_right_dock(panel_size + amount, window, cx),
 3906            }
 3907        } else {
 3908            self.center
 3909                .resize(&self.active_pane, axis, amount, &self.bounds);
 3910        }
 3911        cx.notify();
 3912    }
 3913
 3914    pub fn reset_pane_sizes(&mut self, cx: &mut Context<Self>) {
 3915        self.center.reset_pane_sizes();
 3916        cx.notify();
 3917    }
 3918
 3919    fn handle_pane_focused(
 3920        &mut self,
 3921        pane: Entity<Pane>,
 3922        window: &mut Window,
 3923        cx: &mut Context<Self>,
 3924    ) {
 3925        // This is explicitly hoisted out of the following check for pane identity as
 3926        // terminal panel panes are not registered as a center panes.
 3927        self.status_bar.update(cx, |status_bar, cx| {
 3928            status_bar.set_active_pane(&pane, window, cx);
 3929        });
 3930        if self.active_pane != pane {
 3931            self.set_active_pane(&pane, window, cx);
 3932        }
 3933
 3934        if self.last_active_center_pane.is_none() {
 3935            self.last_active_center_pane = Some(pane.downgrade());
 3936        }
 3937
 3938        self.dismiss_zoomed_items_to_reveal(None, window, cx);
 3939        if pane.read(cx).is_zoomed() {
 3940            self.zoomed = Some(pane.downgrade().into());
 3941        } else {
 3942            self.zoomed = None;
 3943        }
 3944        self.zoomed_position = None;
 3945        cx.emit(Event::ZoomChanged);
 3946        self.update_active_view_for_followers(window, cx);
 3947        pane.update(cx, |pane, _| {
 3948            pane.track_alternate_file_items();
 3949        });
 3950
 3951        cx.notify();
 3952    }
 3953
 3954    fn set_active_pane(
 3955        &mut self,
 3956        pane: &Entity<Pane>,
 3957        window: &mut Window,
 3958        cx: &mut Context<Self>,
 3959    ) {
 3960        self.active_pane = pane.clone();
 3961        self.active_item_path_changed(window, cx);
 3962        self.last_active_center_pane = Some(pane.downgrade());
 3963    }
 3964
 3965    fn handle_panel_focused(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3966        self.update_active_view_for_followers(window, cx);
 3967    }
 3968
 3969    fn handle_pane_event(
 3970        &mut self,
 3971        pane: &Entity<Pane>,
 3972        event: &pane::Event,
 3973        window: &mut Window,
 3974        cx: &mut Context<Self>,
 3975    ) {
 3976        let mut serialize_workspace = true;
 3977        match event {
 3978            pane::Event::AddItem { item } => {
 3979                item.added_to_pane(self, pane.clone(), window, cx);
 3980                cx.emit(Event::ItemAdded {
 3981                    item: item.boxed_clone(),
 3982                });
 3983            }
 3984            pane::Event::Split {
 3985                direction,
 3986                clone_active_item,
 3987            } => {
 3988                if *clone_active_item {
 3989                    self.split_and_clone(pane.clone(), *direction, window, cx);
 3990                } else {
 3991                    self.split_and_move(pane.clone(), *direction, window, cx);
 3992                }
 3993            }
 3994            pane::Event::JoinIntoNext => {
 3995                self.join_pane_into_next(pane.clone(), window, cx);
 3996            }
 3997            pane::Event::JoinAll => {
 3998                self.join_all_panes(window, cx);
 3999            }
 4000            pane::Event::Remove { focus_on_pane } => {
 4001                self.remove_pane(pane.clone(), focus_on_pane.clone(), window, cx);
 4002            }
 4003            pane::Event::ActivateItem {
 4004                local,
 4005                focus_changed,
 4006            } => {
 4007                window.invalidate_character_coordinates();
 4008
 4009                pane.update(cx, |pane, _| {
 4010                    pane.track_alternate_file_items();
 4011                });
 4012                if *local {
 4013                    self.unfollow_in_pane(pane, window, cx);
 4014                }
 4015                serialize_workspace = *focus_changed || pane != self.active_pane();
 4016                if pane == self.active_pane() {
 4017                    self.active_item_path_changed(window, cx);
 4018                    self.update_active_view_for_followers(window, cx);
 4019                } else if *local {
 4020                    self.set_active_pane(pane, window, cx);
 4021                }
 4022            }
 4023            pane::Event::UserSavedItem { item, save_intent } => {
 4024                cx.emit(Event::UserSavedItem {
 4025                    pane: pane.downgrade(),
 4026                    item: item.boxed_clone(),
 4027                    save_intent: *save_intent,
 4028                });
 4029                serialize_workspace = false;
 4030            }
 4031            pane::Event::ChangeItemTitle => {
 4032                if *pane == self.active_pane {
 4033                    self.active_item_path_changed(window, cx);
 4034                }
 4035                serialize_workspace = false;
 4036            }
 4037            pane::Event::RemovedItem { item } => {
 4038                cx.emit(Event::ActiveItemChanged);
 4039                self.update_window_edited(window, cx);
 4040                if let hash_map::Entry::Occupied(entry) = self.panes_by_item.entry(item.item_id())
 4041                    && entry.get().entity_id() == pane.entity_id()
 4042                {
 4043                    entry.remove();
 4044                }
 4045                cx.emit(Event::ItemRemoved {
 4046                    item_id: item.item_id(),
 4047                });
 4048            }
 4049            pane::Event::Focus => {
 4050                window.invalidate_character_coordinates();
 4051                self.handle_pane_focused(pane.clone(), window, cx);
 4052            }
 4053            pane::Event::ZoomIn => {
 4054                if *pane == self.active_pane {
 4055                    pane.update(cx, |pane, cx| pane.set_zoomed(true, cx));
 4056                    if pane.read(cx).has_focus(window, cx) {
 4057                        self.zoomed = Some(pane.downgrade().into());
 4058                        self.zoomed_position = None;
 4059                        cx.emit(Event::ZoomChanged);
 4060                    }
 4061                    cx.notify();
 4062                }
 4063            }
 4064            pane::Event::ZoomOut => {
 4065                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 4066                if self.zoomed_position.is_none() {
 4067                    self.zoomed = None;
 4068                    cx.emit(Event::ZoomChanged);
 4069                }
 4070                cx.notify();
 4071            }
 4072            pane::Event::ItemPinned | pane::Event::ItemUnpinned => {}
 4073        }
 4074
 4075        if serialize_workspace {
 4076            self.serialize_workspace(window, cx);
 4077        }
 4078    }
 4079
 4080    pub fn unfollow_in_pane(
 4081        &mut self,
 4082        pane: &Entity<Pane>,
 4083        window: &mut Window,
 4084        cx: &mut Context<Workspace>,
 4085    ) -> Option<CollaboratorId> {
 4086        let leader_id = self.leader_for_pane(pane)?;
 4087        self.unfollow(leader_id, window, cx);
 4088        Some(leader_id)
 4089    }
 4090
 4091    pub fn split_pane(
 4092        &mut self,
 4093        pane_to_split: Entity<Pane>,
 4094        split_direction: SplitDirection,
 4095        window: &mut Window,
 4096        cx: &mut Context<Self>,
 4097    ) -> Entity<Pane> {
 4098        let new_pane = self.add_pane(window, cx);
 4099        self.center
 4100            .split(&pane_to_split, &new_pane, split_direction)
 4101            .unwrap();
 4102        cx.notify();
 4103        new_pane
 4104    }
 4105
 4106    pub fn split_and_move(
 4107        &mut self,
 4108        pane: Entity<Pane>,
 4109        direction: SplitDirection,
 4110        window: &mut Window,
 4111        cx: &mut Context<Self>,
 4112    ) {
 4113        let Some(item) = pane.update(cx, |pane, cx| pane.take_active_item(window, cx)) else {
 4114            return;
 4115        };
 4116        let new_pane = self.add_pane(window, cx);
 4117        new_pane.update(cx, |pane, cx| {
 4118            pane.add_item(item, true, true, None, window, cx)
 4119        });
 4120        self.center.split(&pane, &new_pane, direction).unwrap();
 4121        cx.notify();
 4122    }
 4123
 4124    pub fn split_and_clone(
 4125        &mut self,
 4126        pane: Entity<Pane>,
 4127        direction: SplitDirection,
 4128        window: &mut Window,
 4129        cx: &mut Context<Self>,
 4130    ) -> Option<Entity<Pane>> {
 4131        let item = pane.read(cx).active_item()?;
 4132        let maybe_pane_handle =
 4133            if let Some(clone) = item.clone_on_split(self.database_id(), window, cx) {
 4134                let new_pane = self.add_pane(window, cx);
 4135                new_pane.update(cx, |pane, cx| {
 4136                    pane.add_item(clone, true, true, None, window, cx)
 4137                });
 4138                self.center.split(&pane, &new_pane, direction).unwrap();
 4139                cx.notify();
 4140                Some(new_pane)
 4141            } else {
 4142                None
 4143            };
 4144        maybe_pane_handle
 4145    }
 4146
 4147    pub fn join_all_panes(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4148        let active_item = self.active_pane.read(cx).active_item();
 4149        for pane in &self.panes {
 4150            join_pane_into_active(&self.active_pane, pane, window, cx);
 4151        }
 4152        if let Some(active_item) = active_item {
 4153            self.activate_item(active_item.as_ref(), true, true, window, cx);
 4154        }
 4155        cx.notify();
 4156    }
 4157
 4158    pub fn join_pane_into_next(
 4159        &mut self,
 4160        pane: Entity<Pane>,
 4161        window: &mut Window,
 4162        cx: &mut Context<Self>,
 4163    ) {
 4164        let next_pane = self
 4165            .find_pane_in_direction(SplitDirection::Right, cx)
 4166            .or_else(|| self.find_pane_in_direction(SplitDirection::Down, cx))
 4167            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4168            .or_else(|| self.find_pane_in_direction(SplitDirection::Up, cx));
 4169        let Some(next_pane) = next_pane else {
 4170            return;
 4171        };
 4172        move_all_items(&pane, &next_pane, window, cx);
 4173        cx.notify();
 4174    }
 4175
 4176    fn remove_pane(
 4177        &mut self,
 4178        pane: Entity<Pane>,
 4179        focus_on: Option<Entity<Pane>>,
 4180        window: &mut Window,
 4181        cx: &mut Context<Self>,
 4182    ) {
 4183        if self.center.remove(&pane).unwrap() {
 4184            self.force_remove_pane(&pane, &focus_on, window, cx);
 4185            self.unfollow_in_pane(&pane, window, cx);
 4186            self.last_leaders_by_pane.remove(&pane.downgrade());
 4187            for removed_item in pane.read(cx).items() {
 4188                self.panes_by_item.remove(&removed_item.item_id());
 4189            }
 4190
 4191            cx.notify();
 4192        } else {
 4193            self.active_item_path_changed(window, cx);
 4194        }
 4195        cx.emit(Event::PaneRemoved);
 4196    }
 4197
 4198    pub fn panes(&self) -> &[Entity<Pane>] {
 4199        &self.panes
 4200    }
 4201
 4202    pub const fn active_pane(&self) -> &Entity<Pane> {
 4203        &self.active_pane
 4204    }
 4205
 4206    pub fn focused_pane(&self, window: &Window, cx: &App) -> Entity<Pane> {
 4207        for dock in self.all_docks() {
 4208            if dock.focus_handle(cx).contains_focused(window, cx)
 4209                && let Some(pane) = dock
 4210                    .read(cx)
 4211                    .active_panel()
 4212                    .and_then(|panel| panel.pane(cx))
 4213            {
 4214                return pane;
 4215            }
 4216        }
 4217        self.active_pane().clone()
 4218    }
 4219
 4220    pub fn adjacent_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 4221        self.find_pane_in_direction(SplitDirection::Right, cx)
 4222            .unwrap_or_else(|| {
 4223                self.split_pane(self.active_pane.clone(), SplitDirection::Right, window, cx)
 4224            })
 4225    }
 4226
 4227    pub fn pane_for(&self, handle: &dyn ItemHandle) -> Option<Entity<Pane>> {
 4228        let weak_pane = self.panes_by_item.get(&handle.item_id())?;
 4229        weak_pane.upgrade()
 4230    }
 4231
 4232    fn collaborator_left(&mut self, peer_id: PeerId, window: &mut Window, cx: &mut Context<Self>) {
 4233        self.follower_states.retain(|leader_id, state| {
 4234            if *leader_id == CollaboratorId::PeerId(peer_id) {
 4235                for item in state.items_by_leader_view_id.values() {
 4236                    item.view.set_leader_id(None, window, cx);
 4237                }
 4238                false
 4239            } else {
 4240                true
 4241            }
 4242        });
 4243        cx.notify();
 4244    }
 4245
 4246    pub fn start_following(
 4247        &mut self,
 4248        leader_id: impl Into<CollaboratorId>,
 4249        window: &mut Window,
 4250        cx: &mut Context<Self>,
 4251    ) -> Option<Task<Result<()>>> {
 4252        let leader_id = leader_id.into();
 4253        let pane = self.active_pane().clone();
 4254
 4255        self.last_leaders_by_pane
 4256            .insert(pane.downgrade(), leader_id);
 4257        self.unfollow(leader_id, window, cx);
 4258        self.unfollow_in_pane(&pane, window, cx);
 4259        self.follower_states.insert(
 4260            leader_id,
 4261            FollowerState {
 4262                center_pane: pane.clone(),
 4263                dock_pane: None,
 4264                active_view_id: None,
 4265                items_by_leader_view_id: Default::default(),
 4266            },
 4267        );
 4268        cx.notify();
 4269
 4270        match leader_id {
 4271            CollaboratorId::PeerId(leader_peer_id) => {
 4272                let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4273                let project_id = self.project.read(cx).remote_id();
 4274                let request = self.app_state.client.request(proto::Follow {
 4275                    room_id,
 4276                    project_id,
 4277                    leader_id: Some(leader_peer_id),
 4278                });
 4279
 4280                Some(cx.spawn_in(window, async move |this, cx| {
 4281                    let response = request.await?;
 4282                    this.update(cx, |this, _| {
 4283                        let state = this
 4284                            .follower_states
 4285                            .get_mut(&leader_id)
 4286                            .context("following interrupted")?;
 4287                        state.active_view_id = response
 4288                            .active_view
 4289                            .as_ref()
 4290                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4291                        anyhow::Ok(())
 4292                    })??;
 4293                    if let Some(view) = response.active_view {
 4294                        Self::add_view_from_leader(this.clone(), leader_peer_id, &view, cx).await?;
 4295                    }
 4296                    this.update_in(cx, |this, window, cx| {
 4297                        this.leader_updated(leader_id, window, cx)
 4298                    })?;
 4299                    Ok(())
 4300                }))
 4301            }
 4302            CollaboratorId::Agent => {
 4303                self.leader_updated(leader_id, window, cx)?;
 4304                Some(Task::ready(Ok(())))
 4305            }
 4306        }
 4307    }
 4308
 4309    pub fn follow_next_collaborator(
 4310        &mut self,
 4311        _: &FollowNextCollaborator,
 4312        window: &mut Window,
 4313        cx: &mut Context<Self>,
 4314    ) {
 4315        let collaborators = self.project.read(cx).collaborators();
 4316        let next_leader_id = if let Some(leader_id) = self.leader_for_pane(&self.active_pane) {
 4317            let mut collaborators = collaborators.keys().copied();
 4318            for peer_id in collaborators.by_ref() {
 4319                if CollaboratorId::PeerId(peer_id) == leader_id {
 4320                    break;
 4321                }
 4322            }
 4323            collaborators.next().map(CollaboratorId::PeerId)
 4324        } else if let Some(last_leader_id) =
 4325            self.last_leaders_by_pane.get(&self.active_pane.downgrade())
 4326        {
 4327            match last_leader_id {
 4328                CollaboratorId::PeerId(peer_id) => {
 4329                    if collaborators.contains_key(peer_id) {
 4330                        Some(*last_leader_id)
 4331                    } else {
 4332                        None
 4333                    }
 4334                }
 4335                CollaboratorId::Agent => Some(CollaboratorId::Agent),
 4336            }
 4337        } else {
 4338            None
 4339        };
 4340
 4341        let pane = self.active_pane.clone();
 4342        let Some(leader_id) = next_leader_id.or_else(|| {
 4343            Some(CollaboratorId::PeerId(
 4344                collaborators.keys().copied().next()?,
 4345            ))
 4346        }) else {
 4347            return;
 4348        };
 4349        if self.unfollow_in_pane(&pane, window, cx) == Some(leader_id) {
 4350            return;
 4351        }
 4352        if let Some(task) = self.start_following(leader_id, window, cx) {
 4353            task.detach_and_log_err(cx)
 4354        }
 4355    }
 4356
 4357    pub fn follow(
 4358        &mut self,
 4359        leader_id: impl Into<CollaboratorId>,
 4360        window: &mut Window,
 4361        cx: &mut Context<Self>,
 4362    ) {
 4363        let leader_id = leader_id.into();
 4364
 4365        if let CollaboratorId::PeerId(peer_id) = leader_id {
 4366            let Some(room) = ActiveCall::global(cx).read(cx).room() else {
 4367                return;
 4368            };
 4369            let room = room.read(cx);
 4370            let Some(remote_participant) = room.remote_participant_for_peer_id(peer_id) else {
 4371                return;
 4372            };
 4373
 4374            let project = self.project.read(cx);
 4375
 4376            let other_project_id = match remote_participant.location {
 4377                call::ParticipantLocation::External => None,
 4378                call::ParticipantLocation::UnsharedProject => None,
 4379                call::ParticipantLocation::SharedProject { project_id } => {
 4380                    if Some(project_id) == project.remote_id() {
 4381                        None
 4382                    } else {
 4383                        Some(project_id)
 4384                    }
 4385                }
 4386            };
 4387
 4388            // if they are active in another project, follow there.
 4389            if let Some(project_id) = other_project_id {
 4390                let app_state = self.app_state.clone();
 4391                crate::join_in_room_project(project_id, remote_participant.user.id, app_state, cx)
 4392                    .detach_and_log_err(cx);
 4393            }
 4394        }
 4395
 4396        // if you're already following, find the right pane and focus it.
 4397        if let Some(follower_state) = self.follower_states.get(&leader_id) {
 4398            window.focus(&follower_state.pane().focus_handle(cx));
 4399
 4400            return;
 4401        }
 4402
 4403        // Otherwise, follow.
 4404        if let Some(task) = self.start_following(leader_id, window, cx) {
 4405            task.detach_and_log_err(cx)
 4406        }
 4407    }
 4408
 4409    pub fn unfollow(
 4410        &mut self,
 4411        leader_id: impl Into<CollaboratorId>,
 4412        window: &mut Window,
 4413        cx: &mut Context<Self>,
 4414    ) -> Option<()> {
 4415        cx.notify();
 4416
 4417        let leader_id = leader_id.into();
 4418        let state = self.follower_states.remove(&leader_id)?;
 4419        for (_, item) in state.items_by_leader_view_id {
 4420            item.view.set_leader_id(None, window, cx);
 4421        }
 4422
 4423        if let CollaboratorId::PeerId(leader_peer_id) = leader_id {
 4424            let project_id = self.project.read(cx).remote_id();
 4425            let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4426            self.app_state
 4427                .client
 4428                .send(proto::Unfollow {
 4429                    room_id,
 4430                    project_id,
 4431                    leader_id: Some(leader_peer_id),
 4432                })
 4433                .log_err();
 4434        }
 4435
 4436        Some(())
 4437    }
 4438
 4439    pub fn is_being_followed(&self, id: impl Into<CollaboratorId>) -> bool {
 4440        self.follower_states.contains_key(&id.into())
 4441    }
 4442
 4443    fn active_item_path_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4444        cx.emit(Event::ActiveItemChanged);
 4445        let active_entry = self.active_project_path(cx);
 4446        self.project.update(cx, |project, cx| {
 4447            project.set_active_path(active_entry.clone(), cx)
 4448        });
 4449
 4450        if let Some(project_path) = &active_entry {
 4451            let git_store_entity = self.project.read(cx).git_store().clone();
 4452            git_store_entity.update(cx, |git_store, cx| {
 4453                git_store.set_active_repo_for_path(project_path, cx);
 4454            });
 4455        }
 4456
 4457        self.update_window_title(window, cx);
 4458    }
 4459
 4460    fn update_window_title(&mut self, window: &mut Window, cx: &mut App) {
 4461        let project = self.project().read(cx);
 4462        let mut title = String::new();
 4463
 4464        for (i, worktree) in project.visible_worktrees(cx).enumerate() {
 4465            let name = {
 4466                let settings_location = SettingsLocation {
 4467                    worktree_id: worktree.read(cx).id(),
 4468                    path: RelPath::empty(),
 4469                };
 4470
 4471                let settings = WorktreeSettings::get(Some(settings_location), cx);
 4472                match &settings.project_name {
 4473                    Some(name) => name.as_str(),
 4474                    None => worktree.read(cx).root_name_str(),
 4475                }
 4476            };
 4477            if i > 0 {
 4478                title.push_str(", ");
 4479            }
 4480            title.push_str(name);
 4481        }
 4482
 4483        if title.is_empty() {
 4484            title = "empty project".to_string();
 4485        }
 4486
 4487        if let Some(path) = self.active_item(cx).and_then(|item| item.project_path(cx)) {
 4488            let filename = path.path.file_name().or_else(|| {
 4489                Some(
 4490                    project
 4491                        .worktree_for_id(path.worktree_id, cx)?
 4492                        .read(cx)
 4493                        .root_name_str(),
 4494                )
 4495            });
 4496
 4497            if let Some(filename) = filename {
 4498                title.push_str("");
 4499                title.push_str(filename.as_ref());
 4500            }
 4501        }
 4502
 4503        if project.is_via_collab() {
 4504            title.push_str("");
 4505        } else if project.is_shared() {
 4506            title.push_str("");
 4507        }
 4508
 4509        if let Some(last_title) = self.last_window_title.as_ref()
 4510            && &title == last_title
 4511        {
 4512            return;
 4513        }
 4514        window.set_window_title(&title);
 4515        SystemWindowTabController::update_tab_title(
 4516            cx,
 4517            window.window_handle().window_id(),
 4518            SharedString::from(&title),
 4519        );
 4520        self.last_window_title = Some(title);
 4521    }
 4522
 4523    fn update_window_edited(&mut self, window: &mut Window, cx: &mut App) {
 4524        let is_edited = !self.project.read(cx).is_disconnected(cx) && !self.dirty_items.is_empty();
 4525        if is_edited != self.window_edited {
 4526            self.window_edited = is_edited;
 4527            window.set_window_edited(self.window_edited)
 4528        }
 4529    }
 4530
 4531    fn update_item_dirty_state(
 4532        &mut self,
 4533        item: &dyn ItemHandle,
 4534        window: &mut Window,
 4535        cx: &mut App,
 4536    ) {
 4537        let is_dirty = item.is_dirty(cx);
 4538        let item_id = item.item_id();
 4539        let was_dirty = self.dirty_items.contains_key(&item_id);
 4540        if is_dirty == was_dirty {
 4541            return;
 4542        }
 4543        if was_dirty {
 4544            self.dirty_items.remove(&item_id);
 4545            self.update_window_edited(window, cx);
 4546            return;
 4547        }
 4548        if let Some(window_handle) = window.window_handle().downcast::<Self>() {
 4549            let s = item.on_release(
 4550                cx,
 4551                Box::new(move |cx| {
 4552                    window_handle
 4553                        .update(cx, |this, window, cx| {
 4554                            this.dirty_items.remove(&item_id);
 4555                            this.update_window_edited(window, cx)
 4556                        })
 4557                        .ok();
 4558                }),
 4559            );
 4560            self.dirty_items.insert(item_id, s);
 4561            self.update_window_edited(window, cx);
 4562        }
 4563    }
 4564
 4565    fn render_notifications(&self, _window: &mut Window, _cx: &mut Context<Self>) -> Option<Div> {
 4566        if self.notifications.is_empty() {
 4567            None
 4568        } else {
 4569            Some(
 4570                div()
 4571                    .absolute()
 4572                    .right_3()
 4573                    .bottom_3()
 4574                    .w_112()
 4575                    .h_full()
 4576                    .flex()
 4577                    .flex_col()
 4578                    .justify_end()
 4579                    .gap_2()
 4580                    .children(
 4581                        self.notifications
 4582                            .iter()
 4583                            .map(|(_, notification)| notification.clone().into_any()),
 4584                    ),
 4585            )
 4586        }
 4587    }
 4588
 4589    // RPC handlers
 4590
 4591    fn active_view_for_follower(
 4592        &self,
 4593        follower_project_id: Option<u64>,
 4594        window: &mut Window,
 4595        cx: &mut Context<Self>,
 4596    ) -> Option<proto::View> {
 4597        let (item, panel_id) = self.active_item_for_followers(window, cx);
 4598        let item = item?;
 4599        let leader_id = self
 4600            .pane_for(&*item)
 4601            .and_then(|pane| self.leader_for_pane(&pane));
 4602        let leader_peer_id = match leader_id {
 4603            Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4604            Some(CollaboratorId::Agent) | None => None,
 4605        };
 4606
 4607        let item_handle = item.to_followable_item_handle(cx)?;
 4608        let id = item_handle.remote_id(&self.app_state.client, window, cx)?;
 4609        let variant = item_handle.to_state_proto(window, cx)?;
 4610
 4611        if item_handle.is_project_item(window, cx)
 4612            && (follower_project_id.is_none()
 4613                || follower_project_id != self.project.read(cx).remote_id())
 4614        {
 4615            return None;
 4616        }
 4617
 4618        Some(proto::View {
 4619            id: id.to_proto(),
 4620            leader_id: leader_peer_id,
 4621            variant: Some(variant),
 4622            panel_id: panel_id.map(|id| id as i32),
 4623        })
 4624    }
 4625
 4626    fn handle_follow(
 4627        &mut self,
 4628        follower_project_id: Option<u64>,
 4629        window: &mut Window,
 4630        cx: &mut Context<Self>,
 4631    ) -> proto::FollowResponse {
 4632        let active_view = self.active_view_for_follower(follower_project_id, window, cx);
 4633
 4634        cx.notify();
 4635        proto::FollowResponse {
 4636            // TODO: Remove after version 0.145.x stabilizes.
 4637            active_view_id: active_view.as_ref().and_then(|view| view.id.clone()),
 4638            views: active_view.iter().cloned().collect(),
 4639            active_view,
 4640        }
 4641    }
 4642
 4643    fn handle_update_followers(
 4644        &mut self,
 4645        leader_id: PeerId,
 4646        message: proto::UpdateFollowers,
 4647        _window: &mut Window,
 4648        _cx: &mut Context<Self>,
 4649    ) {
 4650        self.leader_updates_tx
 4651            .unbounded_send((leader_id, message))
 4652            .ok();
 4653    }
 4654
 4655    async fn process_leader_update(
 4656        this: &WeakEntity<Self>,
 4657        leader_id: PeerId,
 4658        update: proto::UpdateFollowers,
 4659        cx: &mut AsyncWindowContext,
 4660    ) -> Result<()> {
 4661        match update.variant.context("invalid update")? {
 4662            proto::update_followers::Variant::CreateView(view) => {
 4663                let view_id = ViewId::from_proto(view.id.clone().context("invalid view id")?)?;
 4664                let should_add_view = this.update(cx, |this, _| {
 4665                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4666                        anyhow::Ok(!state.items_by_leader_view_id.contains_key(&view_id))
 4667                    } else {
 4668                        anyhow::Ok(false)
 4669                    }
 4670                })??;
 4671
 4672                if should_add_view {
 4673                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4674                }
 4675            }
 4676            proto::update_followers::Variant::UpdateActiveView(update_active_view) => {
 4677                let should_add_view = this.update(cx, |this, _| {
 4678                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4679                        state.active_view_id = update_active_view
 4680                            .view
 4681                            .as_ref()
 4682                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4683
 4684                        if state.active_view_id.is_some_and(|view_id| {
 4685                            !state.items_by_leader_view_id.contains_key(&view_id)
 4686                        }) {
 4687                            anyhow::Ok(true)
 4688                        } else {
 4689                            anyhow::Ok(false)
 4690                        }
 4691                    } else {
 4692                        anyhow::Ok(false)
 4693                    }
 4694                })??;
 4695
 4696                if should_add_view && let Some(view) = update_active_view.view {
 4697                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4698                }
 4699            }
 4700            proto::update_followers::Variant::UpdateView(update_view) => {
 4701                let variant = update_view.variant.context("missing update view variant")?;
 4702                let id = update_view.id.context("missing update view id")?;
 4703                let mut tasks = Vec::new();
 4704                this.update_in(cx, |this, window, cx| {
 4705                    let project = this.project.clone();
 4706                    if let Some(state) = this.follower_states.get(&leader_id.into()) {
 4707                        let view_id = ViewId::from_proto(id.clone())?;
 4708                        if let Some(item) = state.items_by_leader_view_id.get(&view_id) {
 4709                            tasks.push(item.view.apply_update_proto(
 4710                                &project,
 4711                                variant.clone(),
 4712                                window,
 4713                                cx,
 4714                            ));
 4715                        }
 4716                    }
 4717                    anyhow::Ok(())
 4718                })??;
 4719                try_join_all(tasks).await.log_err();
 4720            }
 4721        }
 4722        this.update_in(cx, |this, window, cx| {
 4723            this.leader_updated(leader_id, window, cx)
 4724        })?;
 4725        Ok(())
 4726    }
 4727
 4728    async fn add_view_from_leader(
 4729        this: WeakEntity<Self>,
 4730        leader_id: PeerId,
 4731        view: &proto::View,
 4732        cx: &mut AsyncWindowContext,
 4733    ) -> Result<()> {
 4734        let this = this.upgrade().context("workspace dropped")?;
 4735
 4736        let Some(id) = view.id.clone() else {
 4737            anyhow::bail!("no id for view");
 4738        };
 4739        let id = ViewId::from_proto(id)?;
 4740        let panel_id = view.panel_id.and_then(proto::PanelId::from_i32);
 4741
 4742        let pane = this.update(cx, |this, _cx| {
 4743            let state = this
 4744                .follower_states
 4745                .get(&leader_id.into())
 4746                .context("stopped following")?;
 4747            anyhow::Ok(state.pane().clone())
 4748        })??;
 4749        let existing_item = pane.update_in(cx, |pane, window, cx| {
 4750            let client = this.read(cx).client().clone();
 4751            pane.items().find_map(|item| {
 4752                let item = item.to_followable_item_handle(cx)?;
 4753                if item.remote_id(&client, window, cx) == Some(id) {
 4754                    Some(item)
 4755                } else {
 4756                    None
 4757                }
 4758            })
 4759        })?;
 4760        let item = if let Some(existing_item) = existing_item {
 4761            existing_item
 4762        } else {
 4763            let variant = view.variant.clone();
 4764            anyhow::ensure!(variant.is_some(), "missing view variant");
 4765
 4766            let task = cx.update(|window, cx| {
 4767                FollowableViewRegistry::from_state_proto(this.clone(), id, variant, window, cx)
 4768            })?;
 4769
 4770            let Some(task) = task else {
 4771                anyhow::bail!(
 4772                    "failed to construct view from leader (maybe from a different version of zed?)"
 4773                );
 4774            };
 4775
 4776            let mut new_item = task.await?;
 4777            pane.update_in(cx, |pane, window, cx| {
 4778                let mut item_to_remove = None;
 4779                for (ix, item) in pane.items().enumerate() {
 4780                    if let Some(item) = item.to_followable_item_handle(cx) {
 4781                        match new_item.dedup(item.as_ref(), window, cx) {
 4782                            Some(item::Dedup::KeepExisting) => {
 4783                                new_item =
 4784                                    item.boxed_clone().to_followable_item_handle(cx).unwrap();
 4785                                break;
 4786                            }
 4787                            Some(item::Dedup::ReplaceExisting) => {
 4788                                item_to_remove = Some((ix, item.item_id()));
 4789                                break;
 4790                            }
 4791                            None => {}
 4792                        }
 4793                    }
 4794                }
 4795
 4796                if let Some((ix, id)) = item_to_remove {
 4797                    pane.remove_item(id, false, false, window, cx);
 4798                    pane.add_item(new_item.boxed_clone(), false, false, Some(ix), window, cx);
 4799                }
 4800            })?;
 4801
 4802            new_item
 4803        };
 4804
 4805        this.update_in(cx, |this, window, cx| {
 4806            let state = this.follower_states.get_mut(&leader_id.into())?;
 4807            item.set_leader_id(Some(leader_id.into()), window, cx);
 4808            state.items_by_leader_view_id.insert(
 4809                id,
 4810                FollowerView {
 4811                    view: item,
 4812                    location: panel_id,
 4813                },
 4814            );
 4815
 4816            Some(())
 4817        })?;
 4818
 4819        Ok(())
 4820    }
 4821
 4822    fn handle_agent_location_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4823        let Some(follower_state) = self.follower_states.get_mut(&CollaboratorId::Agent) else {
 4824            return;
 4825        };
 4826
 4827        if let Some(agent_location) = self.project.read(cx).agent_location() {
 4828            let buffer_entity_id = agent_location.buffer.entity_id();
 4829            let view_id = ViewId {
 4830                creator: CollaboratorId::Agent,
 4831                id: buffer_entity_id.as_u64(),
 4832            };
 4833            follower_state.active_view_id = Some(view_id);
 4834
 4835            let item = match follower_state.items_by_leader_view_id.entry(view_id) {
 4836                hash_map::Entry::Occupied(entry) => Some(entry.into_mut()),
 4837                hash_map::Entry::Vacant(entry) => {
 4838                    let existing_view =
 4839                        follower_state
 4840                            .center_pane
 4841                            .read(cx)
 4842                            .items()
 4843                            .find_map(|item| {
 4844                                let item = item.to_followable_item_handle(cx)?;
 4845                                if item.buffer_kind(cx) == ItemBufferKind::Singleton
 4846                                    && item.project_item_model_ids(cx).as_slice()
 4847                                        == [buffer_entity_id]
 4848                                {
 4849                                    Some(item)
 4850                                } else {
 4851                                    None
 4852                                }
 4853                            });
 4854                    let view = existing_view.or_else(|| {
 4855                        agent_location.buffer.upgrade().and_then(|buffer| {
 4856                            cx.update_default_global(|registry: &mut ProjectItemRegistry, cx| {
 4857                                registry.build_item(buffer, self.project.clone(), None, window, cx)
 4858                            })?
 4859                            .to_followable_item_handle(cx)
 4860                        })
 4861                    });
 4862
 4863                    view.map(|view| {
 4864                        entry.insert(FollowerView {
 4865                            view,
 4866                            location: None,
 4867                        })
 4868                    })
 4869                }
 4870            };
 4871
 4872            if let Some(item) = item {
 4873                item.view
 4874                    .set_leader_id(Some(CollaboratorId::Agent), window, cx);
 4875                item.view
 4876                    .update_agent_location(agent_location.position, window, cx);
 4877            }
 4878        } else {
 4879            follower_state.active_view_id = None;
 4880        }
 4881
 4882        self.leader_updated(CollaboratorId::Agent, window, cx);
 4883    }
 4884
 4885    pub fn update_active_view_for_followers(&mut self, window: &mut Window, cx: &mut App) {
 4886        let mut is_project_item = true;
 4887        let mut update = proto::UpdateActiveView::default();
 4888        if window.is_window_active() {
 4889            let (active_item, panel_id) = self.active_item_for_followers(window, cx);
 4890
 4891            if let Some(item) = active_item
 4892                && item.item_focus_handle(cx).contains_focused(window, cx)
 4893            {
 4894                let leader_id = self
 4895                    .pane_for(&*item)
 4896                    .and_then(|pane| self.leader_for_pane(&pane));
 4897                let leader_peer_id = match leader_id {
 4898                    Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4899                    Some(CollaboratorId::Agent) | None => None,
 4900                };
 4901
 4902                if let Some(item) = item.to_followable_item_handle(cx) {
 4903                    let id = item
 4904                        .remote_id(&self.app_state.client, window, cx)
 4905                        .map(|id| id.to_proto());
 4906
 4907                    if let Some(id) = id
 4908                        && let Some(variant) = item.to_state_proto(window, cx)
 4909                    {
 4910                        let view = Some(proto::View {
 4911                            id: id.clone(),
 4912                            leader_id: leader_peer_id,
 4913                            variant: Some(variant),
 4914                            panel_id: panel_id.map(|id| id as i32),
 4915                        });
 4916
 4917                        is_project_item = item.is_project_item(window, cx);
 4918                        update = proto::UpdateActiveView {
 4919                            view,
 4920                            // TODO: Remove after version 0.145.x stabilizes.
 4921                            id,
 4922                            leader_id: leader_peer_id,
 4923                        };
 4924                    };
 4925                }
 4926            }
 4927        }
 4928
 4929        let active_view_id = update.view.as_ref().and_then(|view| view.id.as_ref());
 4930        if active_view_id != self.last_active_view_id.as_ref() {
 4931            self.last_active_view_id = active_view_id.cloned();
 4932            self.update_followers(
 4933                is_project_item,
 4934                proto::update_followers::Variant::UpdateActiveView(update),
 4935                window,
 4936                cx,
 4937            );
 4938        }
 4939    }
 4940
 4941    fn active_item_for_followers(
 4942        &self,
 4943        window: &mut Window,
 4944        cx: &mut App,
 4945    ) -> (Option<Box<dyn ItemHandle>>, Option<proto::PanelId>) {
 4946        let mut active_item = None;
 4947        let mut panel_id = None;
 4948        for dock in self.all_docks() {
 4949            if dock.focus_handle(cx).contains_focused(window, cx)
 4950                && let Some(panel) = dock.read(cx).active_panel()
 4951                && let Some(pane) = panel.pane(cx)
 4952                && let Some(item) = pane.read(cx).active_item()
 4953            {
 4954                active_item = Some(item);
 4955                panel_id = panel.remote_id();
 4956                break;
 4957            }
 4958        }
 4959
 4960        if active_item.is_none() {
 4961            active_item = self.active_pane().read(cx).active_item();
 4962        }
 4963        (active_item, panel_id)
 4964    }
 4965
 4966    fn update_followers(
 4967        &self,
 4968        project_only: bool,
 4969        update: proto::update_followers::Variant,
 4970        _: &mut Window,
 4971        cx: &mut App,
 4972    ) -> Option<()> {
 4973        // If this update only applies to for followers in the current project,
 4974        // then skip it unless this project is shared. If it applies to all
 4975        // followers, regardless of project, then set `project_id` to none,
 4976        // indicating that it goes to all followers.
 4977        let project_id = if project_only {
 4978            Some(self.project.read(cx).remote_id()?)
 4979        } else {
 4980            None
 4981        };
 4982        self.app_state().workspace_store.update(cx, |store, cx| {
 4983            store.update_followers(project_id, update, cx)
 4984        })
 4985    }
 4986
 4987    pub fn leader_for_pane(&self, pane: &Entity<Pane>) -> Option<CollaboratorId> {
 4988        self.follower_states.iter().find_map(|(leader_id, state)| {
 4989            if state.center_pane == *pane || state.dock_pane.as_ref() == Some(pane) {
 4990                Some(*leader_id)
 4991            } else {
 4992                None
 4993            }
 4994        })
 4995    }
 4996
 4997    fn leader_updated(
 4998        &mut self,
 4999        leader_id: impl Into<CollaboratorId>,
 5000        window: &mut Window,
 5001        cx: &mut Context<Self>,
 5002    ) -> Option<Box<dyn ItemHandle>> {
 5003        cx.notify();
 5004
 5005        let leader_id = leader_id.into();
 5006        let (panel_id, item) = match leader_id {
 5007            CollaboratorId::PeerId(peer_id) => self.active_item_for_peer(peer_id, window, cx)?,
 5008            CollaboratorId::Agent => (None, self.active_item_for_agent()?),
 5009        };
 5010
 5011        let state = self.follower_states.get(&leader_id)?;
 5012        let mut transfer_focus = state.center_pane.read(cx).has_focus(window, cx);
 5013        let pane;
 5014        if let Some(panel_id) = panel_id {
 5015            pane = self
 5016                .activate_panel_for_proto_id(panel_id, window, cx)?
 5017                .pane(cx)?;
 5018            let state = self.follower_states.get_mut(&leader_id)?;
 5019            state.dock_pane = Some(pane.clone());
 5020        } else {
 5021            pane = state.center_pane.clone();
 5022            let state = self.follower_states.get_mut(&leader_id)?;
 5023            if let Some(dock_pane) = state.dock_pane.take() {
 5024                transfer_focus |= dock_pane.focus_handle(cx).contains_focused(window, cx);
 5025            }
 5026        }
 5027
 5028        pane.update(cx, |pane, cx| {
 5029            let focus_active_item = pane.has_focus(window, cx) || transfer_focus;
 5030            if let Some(index) = pane.index_for_item(item.as_ref()) {
 5031                pane.activate_item(index, false, false, window, cx);
 5032            } else {
 5033                pane.add_item(item.boxed_clone(), false, false, None, window, cx)
 5034            }
 5035
 5036            if focus_active_item {
 5037                pane.focus_active_item(window, cx)
 5038            }
 5039        });
 5040
 5041        Some(item)
 5042    }
 5043
 5044    fn active_item_for_agent(&self) -> Option<Box<dyn ItemHandle>> {
 5045        let state = self.follower_states.get(&CollaboratorId::Agent)?;
 5046        let active_view_id = state.active_view_id?;
 5047        Some(
 5048            state
 5049                .items_by_leader_view_id
 5050                .get(&active_view_id)?
 5051                .view
 5052                .boxed_clone(),
 5053        )
 5054    }
 5055
 5056    fn active_item_for_peer(
 5057        &self,
 5058        peer_id: PeerId,
 5059        window: &mut Window,
 5060        cx: &mut Context<Self>,
 5061    ) -> Option<(Option<PanelId>, Box<dyn ItemHandle>)> {
 5062        let call = self.active_call()?;
 5063        let room = call.read(cx).room()?.read(cx);
 5064        let participant = room.remote_participant_for_peer_id(peer_id)?;
 5065        let leader_in_this_app;
 5066        let leader_in_this_project;
 5067        match participant.location {
 5068            call::ParticipantLocation::SharedProject { project_id } => {
 5069                leader_in_this_app = true;
 5070                leader_in_this_project = Some(project_id) == self.project.read(cx).remote_id();
 5071            }
 5072            call::ParticipantLocation::UnsharedProject => {
 5073                leader_in_this_app = true;
 5074                leader_in_this_project = false;
 5075            }
 5076            call::ParticipantLocation::External => {
 5077                leader_in_this_app = false;
 5078                leader_in_this_project = false;
 5079            }
 5080        };
 5081        let state = self.follower_states.get(&peer_id.into())?;
 5082        let mut item_to_activate = None;
 5083        if let (Some(active_view_id), true) = (state.active_view_id, leader_in_this_app) {
 5084            if let Some(item) = state.items_by_leader_view_id.get(&active_view_id)
 5085                && (leader_in_this_project || !item.view.is_project_item(window, cx))
 5086            {
 5087                item_to_activate = Some((item.location, item.view.boxed_clone()));
 5088            }
 5089        } else if let Some(shared_screen) =
 5090            self.shared_screen_for_peer(peer_id, &state.center_pane, window, cx)
 5091        {
 5092            item_to_activate = Some((None, Box::new(shared_screen)));
 5093        }
 5094        item_to_activate
 5095    }
 5096
 5097    fn shared_screen_for_peer(
 5098        &self,
 5099        peer_id: PeerId,
 5100        pane: &Entity<Pane>,
 5101        window: &mut Window,
 5102        cx: &mut App,
 5103    ) -> Option<Entity<SharedScreen>> {
 5104        let call = self.active_call()?;
 5105        let room = call.read(cx).room()?.clone();
 5106        let participant = room.read(cx).remote_participant_for_peer_id(peer_id)?;
 5107        let track = participant.video_tracks.values().next()?.clone();
 5108        let user = participant.user.clone();
 5109
 5110        for item in pane.read(cx).items_of_type::<SharedScreen>() {
 5111            if item.read(cx).peer_id == peer_id {
 5112                return Some(item);
 5113            }
 5114        }
 5115
 5116        Some(cx.new(|cx| SharedScreen::new(track, peer_id, user.clone(), room.clone(), window, cx)))
 5117    }
 5118
 5119    pub fn on_window_activation_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5120        if window.is_window_active() {
 5121            self.update_active_view_for_followers(window, cx);
 5122
 5123            if let Some(database_id) = self.database_id {
 5124                cx.background_spawn(persistence::DB.update_timestamp(database_id))
 5125                    .detach();
 5126            }
 5127        } else {
 5128            for pane in &self.panes {
 5129                pane.update(cx, |pane, cx| {
 5130                    if let Some(item) = pane.active_item() {
 5131                        item.workspace_deactivated(window, cx);
 5132                    }
 5133                    for item in pane.items() {
 5134                        if matches!(
 5135                            item.workspace_settings(cx).autosave,
 5136                            AutosaveSetting::OnWindowChange | AutosaveSetting::OnFocusChange
 5137                        ) {
 5138                            Pane::autosave_item(item.as_ref(), self.project.clone(), window, cx)
 5139                                .detach_and_log_err(cx);
 5140                        }
 5141                    }
 5142                });
 5143            }
 5144        }
 5145    }
 5146
 5147    pub fn active_call(&self) -> Option<&Entity<ActiveCall>> {
 5148        self.active_call.as_ref().map(|(call, _)| call)
 5149    }
 5150
 5151    fn on_active_call_event(
 5152        &mut self,
 5153        _: &Entity<ActiveCall>,
 5154        event: &call::room::Event,
 5155        window: &mut Window,
 5156        cx: &mut Context<Self>,
 5157    ) {
 5158        match event {
 5159            call::room::Event::ParticipantLocationChanged { participant_id }
 5160            | call::room::Event::RemoteVideoTracksChanged { participant_id } => {
 5161                self.leader_updated(participant_id, window, cx);
 5162            }
 5163            _ => {}
 5164        }
 5165    }
 5166
 5167    pub const fn database_id(&self) -> Option<WorkspaceId> {
 5168        self.database_id
 5169    }
 5170
 5171    pub fn session_id(&self) -> Option<String> {
 5172        self.session_id.clone()
 5173    }
 5174
 5175    pub fn root_paths(&self, cx: &App) -> Vec<Arc<Path>> {
 5176        let project = self.project().read(cx);
 5177        project
 5178            .visible_worktrees(cx)
 5179            .map(|worktree| worktree.read(cx).abs_path())
 5180            .collect::<Vec<_>>()
 5181    }
 5182
 5183    fn remove_panes(&mut self, member: Member, window: &mut Window, cx: &mut Context<Workspace>) {
 5184        match member {
 5185            Member::Axis(PaneAxis { members, .. }) => {
 5186                for child in members.iter() {
 5187                    self.remove_panes(child.clone(), window, cx)
 5188                }
 5189            }
 5190            Member::Pane(pane) => {
 5191                self.force_remove_pane(&pane, &None, window, cx);
 5192            }
 5193        }
 5194    }
 5195
 5196    fn remove_from_session(&mut self, window: &mut Window, cx: &mut App) -> Task<()> {
 5197        self.session_id.take();
 5198        self.serialize_workspace_internal(window, cx)
 5199    }
 5200
 5201    fn force_remove_pane(
 5202        &mut self,
 5203        pane: &Entity<Pane>,
 5204        focus_on: &Option<Entity<Pane>>,
 5205        window: &mut Window,
 5206        cx: &mut Context<Workspace>,
 5207    ) {
 5208        self.panes.retain(|p| p != pane);
 5209        if let Some(focus_on) = focus_on {
 5210            focus_on.update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5211        } else if self.active_pane() == pane {
 5212            self.panes
 5213                .last()
 5214                .unwrap()
 5215                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5216        }
 5217        if self.last_active_center_pane == Some(pane.downgrade()) {
 5218            self.last_active_center_pane = None;
 5219        }
 5220        cx.notify();
 5221    }
 5222
 5223    fn serialize_workspace(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5224        if self._schedule_serialize_workspace.is_none() {
 5225            self._schedule_serialize_workspace =
 5226                Some(cx.spawn_in(window, async move |this, cx| {
 5227                    cx.background_executor()
 5228                        .timer(SERIALIZATION_THROTTLE_TIME)
 5229                        .await;
 5230                    this.update_in(cx, |this, window, cx| {
 5231                        this.serialize_workspace_internal(window, cx).detach();
 5232                        this._schedule_serialize_workspace.take();
 5233                    })
 5234                    .log_err();
 5235                }));
 5236        }
 5237    }
 5238
 5239    fn serialize_workspace_internal(&self, window: &mut Window, cx: &mut App) -> Task<()> {
 5240        let Some(database_id) = self.database_id() else {
 5241            return Task::ready(());
 5242        };
 5243
 5244        fn serialize_pane_handle(
 5245            pane_handle: &Entity<Pane>,
 5246            window: &mut Window,
 5247            cx: &mut App,
 5248        ) -> SerializedPane {
 5249            let (items, active, pinned_count) = {
 5250                let pane = pane_handle.read(cx);
 5251                let active_item_id = pane.active_item().map(|item| item.item_id());
 5252                (
 5253                    pane.items()
 5254                        .filter_map(|handle| {
 5255                            let handle = handle.to_serializable_item_handle(cx)?;
 5256
 5257                            Some(SerializedItem {
 5258                                kind: Arc::from(handle.serialized_item_kind()),
 5259                                item_id: handle.item_id().as_u64(),
 5260                                active: Some(handle.item_id()) == active_item_id,
 5261                                preview: pane.is_active_preview_item(handle.item_id()),
 5262                            })
 5263                        })
 5264                        .collect::<Vec<_>>(),
 5265                    pane.has_focus(window, cx),
 5266                    pane.pinned_count(),
 5267                )
 5268            };
 5269
 5270            SerializedPane::new(items, active, pinned_count)
 5271        }
 5272
 5273        fn build_serialized_pane_group(
 5274            pane_group: &Member,
 5275            window: &mut Window,
 5276            cx: &mut App,
 5277        ) -> SerializedPaneGroup {
 5278            match pane_group {
 5279                Member::Axis(PaneAxis {
 5280                    axis,
 5281                    members,
 5282                    flexes,
 5283                    bounding_boxes: _,
 5284                }) => SerializedPaneGroup::Group {
 5285                    axis: SerializedAxis(*axis),
 5286                    children: members
 5287                        .iter()
 5288                        .map(|member| build_serialized_pane_group(member, window, cx))
 5289                        .collect::<Vec<_>>(),
 5290                    flexes: Some(flexes.lock().clone()),
 5291                },
 5292                Member::Pane(pane_handle) => {
 5293                    SerializedPaneGroup::Pane(serialize_pane_handle(pane_handle, window, cx))
 5294                }
 5295            }
 5296        }
 5297
 5298        fn build_serialized_docks(
 5299            this: &Workspace,
 5300            window: &mut Window,
 5301            cx: &mut App,
 5302        ) -> DockStructure {
 5303            let left_dock = this.left_dock.read(cx);
 5304            let left_visible = left_dock.is_open();
 5305            let left_active_panel = left_dock
 5306                .active_panel()
 5307                .map(|panel| panel.persistent_name().to_string());
 5308            let left_dock_zoom = left_dock
 5309                .active_panel()
 5310                .map(|panel| panel.is_zoomed(window, cx))
 5311                .unwrap_or(false);
 5312
 5313            let right_dock = this.right_dock.read(cx);
 5314            let right_visible = right_dock.is_open();
 5315            let right_active_panel = right_dock
 5316                .active_panel()
 5317                .map(|panel| panel.persistent_name().to_string());
 5318            let right_dock_zoom = right_dock
 5319                .active_panel()
 5320                .map(|panel| panel.is_zoomed(window, cx))
 5321                .unwrap_or(false);
 5322
 5323            let bottom_dock = this.bottom_dock.read(cx);
 5324            let bottom_visible = bottom_dock.is_open();
 5325            let bottom_active_panel = bottom_dock
 5326                .active_panel()
 5327                .map(|panel| panel.persistent_name().to_string());
 5328            let bottom_dock_zoom = bottom_dock
 5329                .active_panel()
 5330                .map(|panel| panel.is_zoomed(window, cx))
 5331                .unwrap_or(false);
 5332
 5333            DockStructure {
 5334                left: DockData {
 5335                    visible: left_visible,
 5336                    active_panel: left_active_panel,
 5337                    zoom: left_dock_zoom,
 5338                },
 5339                right: DockData {
 5340                    visible: right_visible,
 5341                    active_panel: right_active_panel,
 5342                    zoom: right_dock_zoom,
 5343                },
 5344                bottom: DockData {
 5345                    visible: bottom_visible,
 5346                    active_panel: bottom_active_panel,
 5347                    zoom: bottom_dock_zoom,
 5348                },
 5349            }
 5350        }
 5351
 5352        match self.serialize_workspace_location(cx) {
 5353            WorkspaceLocation::Location(location, paths) => {
 5354                let breakpoints = self.project.update(cx, |project, cx| {
 5355                    project
 5356                        .breakpoint_store()
 5357                        .read(cx)
 5358                        .all_source_breakpoints(cx)
 5359                });
 5360                let user_toolchains = self
 5361                    .project
 5362                    .read(cx)
 5363                    .user_toolchains(cx)
 5364                    .unwrap_or_default();
 5365
 5366                let center_group = build_serialized_pane_group(&self.center.root, window, cx);
 5367                let docks = build_serialized_docks(self, window, cx);
 5368                let window_bounds = Some(SerializedWindowBounds(window.window_bounds()));
 5369
 5370                let serialized_workspace = SerializedWorkspace {
 5371                    id: database_id,
 5372                    location,
 5373                    paths,
 5374                    center_group,
 5375                    window_bounds,
 5376                    display: Default::default(),
 5377                    docks,
 5378                    centered_layout: self.centered_layout,
 5379                    session_id: self.session_id.clone(),
 5380                    breakpoints,
 5381                    window_id: Some(window.window_handle().window_id().as_u64()),
 5382                    user_toolchains,
 5383                };
 5384
 5385                window.spawn(cx, async move |_| {
 5386                    persistence::DB.save_workspace(serialized_workspace).await;
 5387                })
 5388            }
 5389            WorkspaceLocation::DetachFromSession => window.spawn(cx, async move |_| {
 5390                persistence::DB
 5391                    .set_session_id(database_id, None)
 5392                    .await
 5393                    .log_err();
 5394            }),
 5395            WorkspaceLocation::None => Task::ready(()),
 5396        }
 5397    }
 5398
 5399    fn serialize_workspace_location(&self, cx: &App) -> WorkspaceLocation {
 5400        let paths = PathList::new(&self.root_paths(cx));
 5401        if let Some(connection) = self.project.read(cx).remote_connection_options(cx) {
 5402            WorkspaceLocation::Location(SerializedWorkspaceLocation::Remote(connection), paths)
 5403        } else if self.project.read(cx).is_local() {
 5404            if !paths.is_empty() {
 5405                WorkspaceLocation::Location(SerializedWorkspaceLocation::Local, paths)
 5406            } else {
 5407                WorkspaceLocation::DetachFromSession
 5408            }
 5409        } else {
 5410            WorkspaceLocation::None
 5411        }
 5412    }
 5413
 5414    fn update_history(&self, cx: &mut App) {
 5415        let Some(id) = self.database_id() else {
 5416            return;
 5417        };
 5418        if !self.project.read(cx).is_local() {
 5419            return;
 5420        }
 5421        if let Some(manager) = HistoryManager::global(cx) {
 5422            let paths = PathList::new(&self.root_paths(cx));
 5423            manager.update(cx, |this, cx| {
 5424                this.update_history(id, HistoryManagerEntry::new(id, &paths), cx);
 5425            });
 5426        }
 5427    }
 5428
 5429    async fn serialize_items(
 5430        this: &WeakEntity<Self>,
 5431        items_rx: UnboundedReceiver<Box<dyn SerializableItemHandle>>,
 5432        cx: &mut AsyncWindowContext,
 5433    ) -> Result<()> {
 5434        const CHUNK_SIZE: usize = 200;
 5435
 5436        let mut serializable_items = items_rx.ready_chunks(CHUNK_SIZE);
 5437
 5438        while let Some(items_received) = serializable_items.next().await {
 5439            let unique_items =
 5440                items_received
 5441                    .into_iter()
 5442                    .fold(HashMap::default(), |mut acc, item| {
 5443                        acc.entry(item.item_id()).or_insert(item);
 5444                        acc
 5445                    });
 5446
 5447            // We use into_iter() here so that the references to the items are moved into
 5448            // the tasks and not kept alive while we're sleeping.
 5449            for (_, item) in unique_items.into_iter() {
 5450                if let Ok(Some(task)) = this.update_in(cx, |workspace, window, cx| {
 5451                    item.serialize(workspace, false, window, cx)
 5452                }) {
 5453                    cx.background_spawn(async move { task.await.log_err() })
 5454                        .detach();
 5455                }
 5456            }
 5457
 5458            cx.background_executor()
 5459                .timer(SERIALIZATION_THROTTLE_TIME)
 5460                .await;
 5461        }
 5462
 5463        Ok(())
 5464    }
 5465
 5466    pub(crate) fn enqueue_item_serialization(
 5467        &mut self,
 5468        item: Box<dyn SerializableItemHandle>,
 5469    ) -> Result<()> {
 5470        self.serializable_items_tx
 5471            .unbounded_send(item)
 5472            .map_err(|err| anyhow!("failed to send serializable item over channel: {err}"))
 5473    }
 5474
 5475    pub(crate) fn load_workspace(
 5476        serialized_workspace: SerializedWorkspace,
 5477        paths_to_open: Vec<Option<ProjectPath>>,
 5478        window: &mut Window,
 5479        cx: &mut Context<Workspace>,
 5480    ) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 5481        cx.spawn_in(window, async move |workspace, cx| {
 5482            let project = workspace.read_with(cx, |workspace, _| workspace.project().clone())?;
 5483
 5484            let mut center_group = None;
 5485            let mut center_items = None;
 5486
 5487            // Traverse the splits tree and add to things
 5488            if let Some((group, active_pane, items)) = serialized_workspace
 5489                .center_group
 5490                .deserialize(&project, serialized_workspace.id, workspace.clone(), cx)
 5491                .await
 5492            {
 5493                center_items = Some(items);
 5494                center_group = Some((group, active_pane))
 5495            }
 5496
 5497            let mut items_by_project_path = HashMap::default();
 5498            let mut item_ids_by_kind = HashMap::default();
 5499            let mut all_deserialized_items = Vec::default();
 5500            cx.update(|_, cx| {
 5501                for item in center_items.unwrap_or_default().into_iter().flatten() {
 5502                    if let Some(serializable_item_handle) = item.to_serializable_item_handle(cx) {
 5503                        item_ids_by_kind
 5504                            .entry(serializable_item_handle.serialized_item_kind())
 5505                            .or_insert(Vec::new())
 5506                            .push(item.item_id().as_u64() as ItemId);
 5507                    }
 5508
 5509                    if let Some(project_path) = item.project_path(cx) {
 5510                        items_by_project_path.insert(project_path, item.clone());
 5511                    }
 5512                    all_deserialized_items.push(item);
 5513                }
 5514            })?;
 5515
 5516            let opened_items = paths_to_open
 5517                .into_iter()
 5518                .map(|path_to_open| {
 5519                    path_to_open
 5520                        .and_then(|path_to_open| items_by_project_path.remove(&path_to_open))
 5521                })
 5522                .collect::<Vec<_>>();
 5523
 5524            // Remove old panes from workspace panes list
 5525            workspace.update_in(cx, |workspace, window, cx| {
 5526                if let Some((center_group, active_pane)) = center_group {
 5527                    workspace.remove_panes(workspace.center.root.clone(), window, cx);
 5528
 5529                    // Swap workspace center group
 5530                    workspace.center = PaneGroup::with_root(center_group);
 5531                    if let Some(active_pane) = active_pane {
 5532                        workspace.set_active_pane(&active_pane, window, cx);
 5533                        cx.focus_self(window);
 5534                    } else {
 5535                        workspace.set_active_pane(&workspace.center.first_pane(), window, cx);
 5536                    }
 5537                }
 5538
 5539                let docks = serialized_workspace.docks;
 5540
 5541                for (dock, serialized_dock) in [
 5542                    (&mut workspace.right_dock, docks.right),
 5543                    (&mut workspace.left_dock, docks.left),
 5544                    (&mut workspace.bottom_dock, docks.bottom),
 5545                ]
 5546                .iter_mut()
 5547                {
 5548                    dock.update(cx, |dock, cx| {
 5549                        dock.serialized_dock = Some(serialized_dock.clone());
 5550                        dock.restore_state(window, cx);
 5551                    });
 5552                }
 5553
 5554                cx.notify();
 5555            })?;
 5556
 5557            let _ = project
 5558                .update(cx, |project, cx| {
 5559                    project
 5560                        .breakpoint_store()
 5561                        .update(cx, |breakpoint_store, cx| {
 5562                            breakpoint_store
 5563                                .with_serialized_breakpoints(serialized_workspace.breakpoints, cx)
 5564                        })
 5565                })?
 5566                .await;
 5567
 5568            // Clean up all the items that have _not_ been loaded. Our ItemIds aren't stable. That means
 5569            // after loading the items, we might have different items and in order to avoid
 5570            // the database filling up, we delete items that haven't been loaded now.
 5571            //
 5572            // The items that have been loaded, have been saved after they've been added to the workspace.
 5573            let clean_up_tasks = workspace.update_in(cx, |_, window, cx| {
 5574                item_ids_by_kind
 5575                    .into_iter()
 5576                    .map(|(item_kind, loaded_items)| {
 5577                        SerializableItemRegistry::cleanup(
 5578                            item_kind,
 5579                            serialized_workspace.id,
 5580                            loaded_items,
 5581                            window,
 5582                            cx,
 5583                        )
 5584                        .log_err()
 5585                    })
 5586                    .collect::<Vec<_>>()
 5587            })?;
 5588
 5589            futures::future::join_all(clean_up_tasks).await;
 5590
 5591            workspace
 5592                .update_in(cx, |workspace, window, cx| {
 5593                    // Serialize ourself to make sure our timestamps and any pane / item changes are replicated
 5594                    workspace.serialize_workspace_internal(window, cx).detach();
 5595
 5596                    // Ensure that we mark the window as edited if we did load dirty items
 5597                    workspace.update_window_edited(window, cx);
 5598                })
 5599                .ok();
 5600
 5601            Ok(opened_items)
 5602        })
 5603    }
 5604
 5605    fn actions(&self, div: Div, window: &mut Window, cx: &mut Context<Self>) -> Div {
 5606        self.add_workspace_actions_listeners(div, window, cx)
 5607            .on_action(cx.listener(
 5608                |_workspace, action_sequence: &settings::ActionSequence, window, cx| {
 5609                    for action in &action_sequence.0 {
 5610                        window.dispatch_action(action.boxed_clone(), cx);
 5611                    }
 5612                },
 5613            ))
 5614            .on_action(cx.listener(Self::close_inactive_items_and_panes))
 5615            .on_action(cx.listener(Self::close_all_items_and_panes))
 5616            .on_action(cx.listener(Self::save_all))
 5617            .on_action(cx.listener(Self::send_keystrokes))
 5618            .on_action(cx.listener(Self::add_folder_to_project))
 5619            .on_action(cx.listener(Self::follow_next_collaborator))
 5620            .on_action(cx.listener(Self::close_window))
 5621            .on_action(cx.listener(Self::activate_pane_at_index))
 5622            .on_action(cx.listener(Self::move_item_to_pane_at_index))
 5623            .on_action(cx.listener(Self::move_focused_panel_to_next_position))
 5624            .on_action(cx.listener(Self::toggle_edit_predictions_all_files))
 5625            .on_action(cx.listener(|workspace, _: &Unfollow, window, cx| {
 5626                let pane = workspace.active_pane().clone();
 5627                workspace.unfollow_in_pane(&pane, window, cx);
 5628            }))
 5629            .on_action(cx.listener(|workspace, action: &Save, window, cx| {
 5630                workspace
 5631                    .save_active_item(action.save_intent.unwrap_or(SaveIntent::Save), window, cx)
 5632                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5633            }))
 5634            .on_action(cx.listener(|workspace, _: &SaveWithoutFormat, window, cx| {
 5635                workspace
 5636                    .save_active_item(SaveIntent::SaveWithoutFormat, window, cx)
 5637                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5638            }))
 5639            .on_action(cx.listener(|workspace, _: &SaveAs, window, cx| {
 5640                workspace
 5641                    .save_active_item(SaveIntent::SaveAs, window, cx)
 5642                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5643            }))
 5644            .on_action(
 5645                cx.listener(|workspace, _: &ActivatePreviousPane, window, cx| {
 5646                    workspace.activate_previous_pane(window, cx)
 5647                }),
 5648            )
 5649            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5650                workspace.activate_next_pane(window, cx)
 5651            }))
 5652            .on_action(
 5653                cx.listener(|workspace, _: &ActivateNextWindow, _window, cx| {
 5654                    workspace.activate_next_window(cx)
 5655                }),
 5656            )
 5657            .on_action(
 5658                cx.listener(|workspace, _: &ActivatePreviousWindow, _window, cx| {
 5659                    workspace.activate_previous_window(cx)
 5660                }),
 5661            )
 5662            .on_action(cx.listener(|workspace, _: &ActivatePaneLeft, window, cx| {
 5663                workspace.activate_pane_in_direction(SplitDirection::Left, window, cx)
 5664            }))
 5665            .on_action(cx.listener(|workspace, _: &ActivatePaneRight, window, cx| {
 5666                workspace.activate_pane_in_direction(SplitDirection::Right, window, cx)
 5667            }))
 5668            .on_action(cx.listener(|workspace, _: &ActivatePaneUp, window, cx| {
 5669                workspace.activate_pane_in_direction(SplitDirection::Up, window, cx)
 5670            }))
 5671            .on_action(cx.listener(|workspace, _: &ActivatePaneDown, window, cx| {
 5672                workspace.activate_pane_in_direction(SplitDirection::Down, window, cx)
 5673            }))
 5674            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5675                workspace.activate_next_pane(window, cx)
 5676            }))
 5677            .on_action(cx.listener(
 5678                |workspace, action: &MoveItemToPaneInDirection, window, cx| {
 5679                    workspace.move_item_to_pane_in_direction(action, window, cx)
 5680                },
 5681            ))
 5682            .on_action(cx.listener(|workspace, _: &SwapPaneLeft, _, cx| {
 5683                workspace.swap_pane_in_direction(SplitDirection::Left, cx)
 5684            }))
 5685            .on_action(cx.listener(|workspace, _: &SwapPaneRight, _, cx| {
 5686                workspace.swap_pane_in_direction(SplitDirection::Right, cx)
 5687            }))
 5688            .on_action(cx.listener(|workspace, _: &SwapPaneUp, _, cx| {
 5689                workspace.swap_pane_in_direction(SplitDirection::Up, cx)
 5690            }))
 5691            .on_action(cx.listener(|workspace, _: &SwapPaneDown, _, cx| {
 5692                workspace.swap_pane_in_direction(SplitDirection::Down, cx)
 5693            }))
 5694            .on_action(cx.listener(|workspace, _: &MovePaneLeft, _, cx| {
 5695                workspace.move_pane_to_border(SplitDirection::Left, cx)
 5696            }))
 5697            .on_action(cx.listener(|workspace, _: &MovePaneRight, _, cx| {
 5698                workspace.move_pane_to_border(SplitDirection::Right, cx)
 5699            }))
 5700            .on_action(cx.listener(|workspace, _: &MovePaneUp, _, cx| {
 5701                workspace.move_pane_to_border(SplitDirection::Up, cx)
 5702            }))
 5703            .on_action(cx.listener(|workspace, _: &MovePaneDown, _, cx| {
 5704                workspace.move_pane_to_border(SplitDirection::Down, cx)
 5705            }))
 5706            .on_action(cx.listener(|this, _: &ToggleLeftDock, window, cx| {
 5707                this.toggle_dock(DockPosition::Left, window, cx);
 5708            }))
 5709            .on_action(cx.listener(
 5710                |workspace: &mut Workspace, _: &ToggleRightDock, window, cx| {
 5711                    workspace.toggle_dock(DockPosition::Right, window, cx);
 5712                },
 5713            ))
 5714            .on_action(cx.listener(
 5715                |workspace: &mut Workspace, _: &ToggleBottomDock, window, cx| {
 5716                    workspace.toggle_dock(DockPosition::Bottom, window, cx);
 5717                },
 5718            ))
 5719            .on_action(cx.listener(
 5720                |workspace: &mut Workspace, _: &CloseActiveDock, window, cx| {
 5721                    if !workspace.close_active_dock(window, cx) {
 5722                        cx.propagate();
 5723                    }
 5724                },
 5725            ))
 5726            .on_action(
 5727                cx.listener(|workspace: &mut Workspace, _: &CloseAllDocks, window, cx| {
 5728                    workspace.close_all_docks(window, cx);
 5729                }),
 5730            )
 5731            .on_action(cx.listener(
 5732                |workspace: &mut Workspace, _: &ClearAllNotifications, _, cx| {
 5733                    workspace.clear_all_notifications(cx);
 5734                },
 5735            ))
 5736            .on_action(cx.listener(
 5737                |workspace: &mut Workspace, _: &SuppressNotification, _, cx| {
 5738                    if let Some((notification_id, _)) = workspace.notifications.pop() {
 5739                        workspace.suppress_notification(&notification_id, cx);
 5740                    }
 5741                },
 5742            ))
 5743            .on_action(cx.listener(
 5744                |workspace: &mut Workspace, _: &ReopenClosedItem, window, cx| {
 5745                    workspace.reopen_closed_item(window, cx).detach();
 5746                },
 5747            ))
 5748            .on_action(cx.listener(
 5749                |workspace: &mut Workspace, _: &ResetActiveDockSize, window, cx| {
 5750                    for dock in workspace.all_docks() {
 5751                        if dock.focus_handle(cx).contains_focused(window, cx) {
 5752                            let Some(panel) = dock.read(cx).active_panel() else {
 5753                                return;
 5754                            };
 5755
 5756                            // Set to `None`, then the size will fall back to the default.
 5757                            panel.clone().set_size(None, window, cx);
 5758
 5759                            return;
 5760                        }
 5761                    }
 5762                },
 5763            ))
 5764            .on_action(cx.listener(
 5765                |workspace: &mut Workspace, _: &ResetOpenDocksSize, window, cx| {
 5766                    for dock in workspace.all_docks() {
 5767                        if let Some(panel) = dock.read(cx).visible_panel() {
 5768                            // Set to `None`, then the size will fall back to the default.
 5769                            panel.clone().set_size(None, window, cx);
 5770                        }
 5771                    }
 5772                },
 5773            ))
 5774            .on_action(cx.listener(
 5775                |workspace: &mut Workspace, act: &IncreaseActiveDockSize, window, cx| {
 5776                    adjust_active_dock_size_by_px(
 5777                        px_with_ui_font_fallback(act.px, cx),
 5778                        workspace,
 5779                        window,
 5780                        cx,
 5781                    );
 5782                },
 5783            ))
 5784            .on_action(cx.listener(
 5785                |workspace: &mut Workspace, act: &DecreaseActiveDockSize, window, cx| {
 5786                    adjust_active_dock_size_by_px(
 5787                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5788                        workspace,
 5789                        window,
 5790                        cx,
 5791                    );
 5792                },
 5793            ))
 5794            .on_action(cx.listener(
 5795                |workspace: &mut Workspace, act: &IncreaseOpenDocksSize, window, cx| {
 5796                    adjust_open_docks_size_by_px(
 5797                        px_with_ui_font_fallback(act.px, cx),
 5798                        workspace,
 5799                        window,
 5800                        cx,
 5801                    );
 5802                },
 5803            ))
 5804            .on_action(cx.listener(
 5805                |workspace: &mut Workspace, act: &DecreaseOpenDocksSize, window, cx| {
 5806                    adjust_open_docks_size_by_px(
 5807                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5808                        workspace,
 5809                        window,
 5810                        cx,
 5811                    );
 5812                },
 5813            ))
 5814            .on_action(cx.listener(Workspace::toggle_centered_layout))
 5815            .on_action(cx.listener(Workspace::cancel))
 5816    }
 5817
 5818    #[cfg(any(test, feature = "test-support"))]
 5819    pub fn test_new(project: Entity<Project>, window: &mut Window, cx: &mut Context<Self>) -> Self {
 5820        use node_runtime::NodeRuntime;
 5821        use session::Session;
 5822
 5823        let client = project.read(cx).client();
 5824        let user_store = project.read(cx).user_store();
 5825        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 5826        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 5827        window.activate_window();
 5828        let app_state = Arc::new(AppState {
 5829            languages: project.read(cx).languages().clone(),
 5830            workspace_store,
 5831            client,
 5832            user_store,
 5833            fs: project.read(cx).fs().clone(),
 5834            build_window_options: |_, _| Default::default(),
 5835            node_runtime: NodeRuntime::unavailable(),
 5836            session,
 5837        });
 5838        let workspace = Self::new(Default::default(), project, app_state, window, cx);
 5839        workspace
 5840            .active_pane
 5841            .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5842        workspace
 5843    }
 5844
 5845    pub fn register_action<A: Action>(
 5846        &mut self,
 5847        callback: impl Fn(&mut Self, &A, &mut Window, &mut Context<Self>) + 'static,
 5848    ) -> &mut Self {
 5849        let callback = Arc::new(callback);
 5850
 5851        self.workspace_actions.push(Box::new(move |div, _, _, cx| {
 5852            let callback = callback.clone();
 5853            div.on_action(cx.listener(move |workspace, event, window, cx| {
 5854                (callback)(workspace, event, window, cx)
 5855            }))
 5856        }));
 5857        self
 5858    }
 5859    pub fn register_action_renderer(
 5860        &mut self,
 5861        callback: impl Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div + 'static,
 5862    ) -> &mut Self {
 5863        self.workspace_actions.push(Box::new(callback));
 5864        self
 5865    }
 5866
 5867    fn add_workspace_actions_listeners(
 5868        &self,
 5869        mut div: Div,
 5870        window: &mut Window,
 5871        cx: &mut Context<Self>,
 5872    ) -> Div {
 5873        for action in self.workspace_actions.iter() {
 5874            div = (action)(div, self, window, cx)
 5875        }
 5876        div
 5877    }
 5878
 5879    pub fn has_active_modal(&self, _: &mut Window, cx: &mut App) -> bool {
 5880        self.modal_layer.read(cx).has_active_modal()
 5881    }
 5882
 5883    pub fn active_modal<V: ManagedView + 'static>(&self, cx: &App) -> Option<Entity<V>> {
 5884        self.modal_layer.read(cx).active_modal()
 5885    }
 5886
 5887    pub fn toggle_modal<V: ModalView, B>(&mut self, window: &mut Window, cx: &mut App, build: B)
 5888    where
 5889        B: FnOnce(&mut Window, &mut Context<V>) -> V,
 5890    {
 5891        self.modal_layer.update(cx, |modal_layer, cx| {
 5892            modal_layer.toggle_modal(window, cx, build)
 5893        })
 5894    }
 5895
 5896    pub fn hide_modal(&mut self, window: &mut Window, cx: &mut App) -> bool {
 5897        self.modal_layer
 5898            .update(cx, |modal_layer, cx| modal_layer.hide_modal(window, cx))
 5899    }
 5900
 5901    pub fn toggle_status_toast<V: ToastView>(&mut self, entity: Entity<V>, cx: &mut App) {
 5902        self.toast_layer
 5903            .update(cx, |toast_layer, cx| toast_layer.toggle_toast(cx, entity))
 5904    }
 5905
 5906    pub fn toggle_centered_layout(
 5907        &mut self,
 5908        _: &ToggleCenteredLayout,
 5909        _: &mut Window,
 5910        cx: &mut Context<Self>,
 5911    ) {
 5912        self.centered_layout = !self.centered_layout;
 5913        if let Some(database_id) = self.database_id() {
 5914            cx.background_spawn(DB.set_centered_layout(database_id, self.centered_layout))
 5915                .detach_and_log_err(cx);
 5916        }
 5917        cx.notify();
 5918    }
 5919
 5920    fn adjust_padding(padding: Option<f32>) -> f32 {
 5921        padding
 5922            .unwrap_or(Self::DEFAULT_PADDING)
 5923            .clamp(0.0, Self::MAX_PADDING)
 5924    }
 5925
 5926    fn render_dock(
 5927        &self,
 5928        position: DockPosition,
 5929        dock: &Entity<Dock>,
 5930        window: &mut Window,
 5931        cx: &mut App,
 5932    ) -> Option<Div> {
 5933        if self.zoomed_position == Some(position) {
 5934            return None;
 5935        }
 5936
 5937        let leader_border = dock.read(cx).active_panel().and_then(|panel| {
 5938            let pane = panel.pane(cx)?;
 5939            let follower_states = &self.follower_states;
 5940            leader_border_for_pane(follower_states, &pane, window, cx)
 5941        });
 5942
 5943        Some(
 5944            div()
 5945                .flex()
 5946                .flex_none()
 5947                .overflow_hidden()
 5948                .child(dock.clone())
 5949                .children(leader_border),
 5950        )
 5951    }
 5952
 5953    pub fn for_window(window: &mut Window, _: &mut App) -> Option<Entity<Workspace>> {
 5954        window.root().flatten()
 5955    }
 5956
 5957    pub const fn zoomed_item(&self) -> Option<&AnyWeakView> {
 5958        self.zoomed.as_ref()
 5959    }
 5960
 5961    pub fn activate_next_window(&mut self, cx: &mut Context<Self>) {
 5962        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 5963            return;
 5964        };
 5965        let windows = cx.windows();
 5966        let next_window =
 5967            SystemWindowTabController::get_next_tab_group_window(cx, current_window_id).or_else(
 5968                || {
 5969                    windows
 5970                        .iter()
 5971                        .cycle()
 5972                        .skip_while(|window| window.window_id() != current_window_id)
 5973                        .nth(1)
 5974                },
 5975            );
 5976
 5977        if let Some(window) = next_window {
 5978            window
 5979                .update(cx, |_, window, _| window.activate_window())
 5980                .ok();
 5981        }
 5982    }
 5983
 5984    pub fn activate_previous_window(&mut self, cx: &mut Context<Self>) {
 5985        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 5986            return;
 5987        };
 5988        let windows = cx.windows();
 5989        let prev_window =
 5990            SystemWindowTabController::get_prev_tab_group_window(cx, current_window_id).or_else(
 5991                || {
 5992                    windows
 5993                        .iter()
 5994                        .rev()
 5995                        .cycle()
 5996                        .skip_while(|window| window.window_id() != current_window_id)
 5997                        .nth(1)
 5998                },
 5999            );
 6000
 6001        if let Some(window) = prev_window {
 6002            window
 6003                .update(cx, |_, window, _| window.activate_window())
 6004                .ok();
 6005        }
 6006    }
 6007
 6008    pub fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
 6009        if cx.stop_active_drag(window) {
 6010        } else if let Some((notification_id, _)) = self.notifications.pop() {
 6011            dismiss_app_notification(&notification_id, cx);
 6012        } else {
 6013            cx.propagate();
 6014        }
 6015    }
 6016
 6017    fn adjust_dock_size_by_px(
 6018        &mut self,
 6019        panel_size: Pixels,
 6020        dock_pos: DockPosition,
 6021        px: Pixels,
 6022        window: &mut Window,
 6023        cx: &mut Context<Self>,
 6024    ) {
 6025        match dock_pos {
 6026            DockPosition::Left => self.resize_left_dock(panel_size + px, window, cx),
 6027            DockPosition::Right => self.resize_right_dock(panel_size + px, window, cx),
 6028            DockPosition::Bottom => self.resize_bottom_dock(panel_size + px, window, cx),
 6029        }
 6030    }
 6031
 6032    fn resize_left_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 6033        let size = new_size.min(self.bounds.right() - RESIZE_HANDLE_SIZE);
 6034
 6035        self.left_dock.update(cx, |left_dock, cx| {
 6036            if WorkspaceSettings::get_global(cx)
 6037                .resize_all_panels_in_dock
 6038                .contains(&DockPosition::Left)
 6039            {
 6040                left_dock.resize_all_panels(Some(size), window, cx);
 6041            } else {
 6042                left_dock.resize_active_panel(Some(size), window, cx);
 6043            }
 6044        });
 6045    }
 6046
 6047    fn resize_right_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 6048        let mut size = new_size.max(self.bounds.left() - RESIZE_HANDLE_SIZE);
 6049        self.left_dock.read_with(cx, |left_dock, cx| {
 6050            let left_dock_size = left_dock
 6051                .active_panel_size(window, cx)
 6052                .unwrap_or(Pixels::ZERO);
 6053            if left_dock_size + size > self.bounds.right() {
 6054                size = self.bounds.right() - left_dock_size
 6055            }
 6056        });
 6057        self.right_dock.update(cx, |right_dock, cx| {
 6058            if WorkspaceSettings::get_global(cx)
 6059                .resize_all_panels_in_dock
 6060                .contains(&DockPosition::Right)
 6061            {
 6062                right_dock.resize_all_panels(Some(size), window, cx);
 6063            } else {
 6064                right_dock.resize_active_panel(Some(size), window, cx);
 6065            }
 6066        });
 6067    }
 6068
 6069    fn resize_bottom_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 6070        let size = new_size.min(self.bounds.bottom() - RESIZE_HANDLE_SIZE - self.bounds.top());
 6071        self.bottom_dock.update(cx, |bottom_dock, cx| {
 6072            if WorkspaceSettings::get_global(cx)
 6073                .resize_all_panels_in_dock
 6074                .contains(&DockPosition::Bottom)
 6075            {
 6076                bottom_dock.resize_all_panels(Some(size), window, cx);
 6077            } else {
 6078                bottom_dock.resize_active_panel(Some(size), window, cx);
 6079            }
 6080        });
 6081    }
 6082
 6083    fn toggle_edit_predictions_all_files(
 6084        &mut self,
 6085        _: &ToggleEditPrediction,
 6086        _window: &mut Window,
 6087        cx: &mut Context<Self>,
 6088    ) {
 6089        let fs = self.project().read(cx).fs().clone();
 6090        let show_edit_predictions = all_language_settings(None, cx).show_edit_predictions(None, cx);
 6091        update_settings_file(fs, cx, move |file, _| {
 6092            file.project.all_languages.defaults.show_edit_predictions = Some(!show_edit_predictions)
 6093        });
 6094    }
 6095}
 6096
 6097fn leader_border_for_pane(
 6098    follower_states: &HashMap<CollaboratorId, FollowerState>,
 6099    pane: &Entity<Pane>,
 6100    _: &Window,
 6101    cx: &App,
 6102) -> Option<Div> {
 6103    let (leader_id, _follower_state) = follower_states.iter().find_map(|(leader_id, state)| {
 6104        if state.pane() == pane {
 6105            Some((*leader_id, state))
 6106        } else {
 6107            None
 6108        }
 6109    })?;
 6110
 6111    let mut leader_color = match leader_id {
 6112        CollaboratorId::PeerId(leader_peer_id) => {
 6113            let room = ActiveCall::try_global(cx)?.read(cx).room()?.read(cx);
 6114            let leader = room.remote_participant_for_peer_id(leader_peer_id)?;
 6115
 6116            cx.theme()
 6117                .players()
 6118                .color_for_participant(leader.participant_index.0)
 6119                .cursor
 6120        }
 6121        CollaboratorId::Agent => cx.theme().players().agent().cursor,
 6122    };
 6123    leader_color.fade_out(0.3);
 6124    Some(
 6125        div()
 6126            .absolute()
 6127            .size_full()
 6128            .left_0()
 6129            .top_0()
 6130            .border_2()
 6131            .border_color(leader_color),
 6132    )
 6133}
 6134
 6135fn window_bounds_env_override() -> Option<Bounds<Pixels>> {
 6136    ZED_WINDOW_POSITION
 6137        .zip(*ZED_WINDOW_SIZE)
 6138        .map(|(position, size)| Bounds {
 6139            origin: position,
 6140            size,
 6141        })
 6142}
 6143
 6144fn open_items(
 6145    serialized_workspace: Option<SerializedWorkspace>,
 6146    mut project_paths_to_open: Vec<(PathBuf, Option<ProjectPath>)>,
 6147    window: &mut Window,
 6148    cx: &mut Context<Workspace>,
 6149) -> impl 'static + Future<Output = Result<Vec<Option<Result<Box<dyn ItemHandle>>>>>> + use<> {
 6150    let restored_items = serialized_workspace.map(|serialized_workspace| {
 6151        Workspace::load_workspace(
 6152            serialized_workspace,
 6153            project_paths_to_open
 6154                .iter()
 6155                .map(|(_, project_path)| project_path)
 6156                .cloned()
 6157                .collect(),
 6158            window,
 6159            cx,
 6160        )
 6161    });
 6162
 6163    cx.spawn_in(window, async move |workspace, cx| {
 6164        let mut opened_items = Vec::with_capacity(project_paths_to_open.len());
 6165
 6166        if let Some(restored_items) = restored_items {
 6167            let restored_items = restored_items.await?;
 6168
 6169            let restored_project_paths = restored_items
 6170                .iter()
 6171                .filter_map(|item| {
 6172                    cx.update(|_, cx| item.as_ref()?.project_path(cx))
 6173                        .ok()
 6174                        .flatten()
 6175                })
 6176                .collect::<HashSet<_>>();
 6177
 6178            for restored_item in restored_items {
 6179                opened_items.push(restored_item.map(Ok));
 6180            }
 6181
 6182            project_paths_to_open
 6183                .iter_mut()
 6184                .for_each(|(_, project_path)| {
 6185                    if let Some(project_path_to_open) = project_path
 6186                        && restored_project_paths.contains(project_path_to_open)
 6187                    {
 6188                        *project_path = None;
 6189                    }
 6190                });
 6191        } else {
 6192            for _ in 0..project_paths_to_open.len() {
 6193                opened_items.push(None);
 6194            }
 6195        }
 6196        assert!(opened_items.len() == project_paths_to_open.len());
 6197
 6198        let tasks =
 6199            project_paths_to_open
 6200                .into_iter()
 6201                .enumerate()
 6202                .map(|(ix, (abs_path, project_path))| {
 6203                    let workspace = workspace.clone();
 6204                    cx.spawn(async move |cx| {
 6205                        let file_project_path = project_path?;
 6206                        let abs_path_task = workspace.update(cx, |workspace, cx| {
 6207                            workspace.project().update(cx, |project, cx| {
 6208                                project.resolve_abs_path(abs_path.to_string_lossy().as_ref(), cx)
 6209                            })
 6210                        });
 6211
 6212                        // We only want to open file paths here. If one of the items
 6213                        // here is a directory, it was already opened further above
 6214                        // with a `find_or_create_worktree`.
 6215                        if let Ok(task) = abs_path_task
 6216                            && task.await.is_none_or(|p| p.is_file())
 6217                        {
 6218                            return Some((
 6219                                ix,
 6220                                workspace
 6221                                    .update_in(cx, |workspace, window, cx| {
 6222                                        workspace.open_path(
 6223                                            file_project_path,
 6224                                            None,
 6225                                            true,
 6226                                            window,
 6227                                            cx,
 6228                                        )
 6229                                    })
 6230                                    .log_err()?
 6231                                    .await,
 6232                            ));
 6233                        }
 6234                        None
 6235                    })
 6236                });
 6237
 6238        let tasks = tasks.collect::<Vec<_>>();
 6239
 6240        let tasks = futures::future::join_all(tasks);
 6241        for (ix, path_open_result) in tasks.await.into_iter().flatten() {
 6242            opened_items[ix] = Some(path_open_result);
 6243        }
 6244
 6245        Ok(opened_items)
 6246    })
 6247}
 6248
 6249enum ActivateInDirectionTarget {
 6250    Pane(Entity<Pane>),
 6251    Dock(Entity<Dock>),
 6252}
 6253
 6254fn notify_if_database_failed(workspace: WindowHandle<Workspace>, cx: &mut AsyncApp) {
 6255    workspace
 6256        .update(cx, |workspace, _, cx| {
 6257            if (*db::ALL_FILE_DB_FAILED).load(std::sync::atomic::Ordering::Acquire) {
 6258                struct DatabaseFailedNotification;
 6259
 6260                workspace.show_notification(
 6261                    NotificationId::unique::<DatabaseFailedNotification>(),
 6262                    cx,
 6263                    |cx| {
 6264                        cx.new(|cx| {
 6265                            MessageNotification::new("Failed to load the database file.", cx)
 6266                                .primary_message("File an Issue")
 6267                                .primary_icon(IconName::Plus)
 6268                                .primary_on_click(|window, cx| {
 6269                                    window.dispatch_action(Box::new(FileBugReport), cx)
 6270                                })
 6271                        })
 6272                    },
 6273                );
 6274            }
 6275        })
 6276        .log_err();
 6277}
 6278
 6279fn px_with_ui_font_fallback(val: u32, cx: &Context<Workspace>) -> Pixels {
 6280    if val == 0 {
 6281        ThemeSettings::get_global(cx).ui_font_size(cx)
 6282    } else {
 6283        px(val as f32)
 6284    }
 6285}
 6286
 6287fn adjust_active_dock_size_by_px(
 6288    px: Pixels,
 6289    workspace: &mut Workspace,
 6290    window: &mut Window,
 6291    cx: &mut Context<Workspace>,
 6292) {
 6293    let Some(active_dock) = workspace
 6294        .all_docks()
 6295        .into_iter()
 6296        .find(|dock| dock.focus_handle(cx).contains_focused(window, cx))
 6297    else {
 6298        return;
 6299    };
 6300    let dock = active_dock.read(cx);
 6301    let Some(panel_size) = dock.active_panel_size(window, cx) else {
 6302        return;
 6303    };
 6304    let dock_pos = dock.position();
 6305    workspace.adjust_dock_size_by_px(panel_size, dock_pos, px, window, cx);
 6306}
 6307
 6308fn adjust_open_docks_size_by_px(
 6309    px: Pixels,
 6310    workspace: &mut Workspace,
 6311    window: &mut Window,
 6312    cx: &mut Context<Workspace>,
 6313) {
 6314    let docks = workspace
 6315        .all_docks()
 6316        .into_iter()
 6317        .filter_map(|dock| {
 6318            if dock.read(cx).is_open() {
 6319                let dock = dock.read(cx);
 6320                let panel_size = dock.active_panel_size(window, cx)?;
 6321                let dock_pos = dock.position();
 6322                Some((panel_size, dock_pos, px))
 6323            } else {
 6324                None
 6325            }
 6326        })
 6327        .collect::<Vec<_>>();
 6328
 6329    docks
 6330        .into_iter()
 6331        .for_each(|(panel_size, dock_pos, offset)| {
 6332            workspace.adjust_dock_size_by_px(panel_size, dock_pos, offset, window, cx);
 6333        });
 6334}
 6335
 6336impl Focusable for Workspace {
 6337    fn focus_handle(&self, cx: &App) -> FocusHandle {
 6338        self.active_pane.focus_handle(cx)
 6339    }
 6340}
 6341
 6342#[derive(Clone)]
 6343struct DraggedDock(DockPosition);
 6344
 6345impl Render for DraggedDock {
 6346    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
 6347        gpui::Empty
 6348    }
 6349}
 6350
 6351impl Render for Workspace {
 6352    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 6353        let mut context = KeyContext::new_with_defaults();
 6354        context.add("Workspace");
 6355        context.set("keyboard_layout", cx.keyboard_layout().name().to_string());
 6356        if let Some(status) = self
 6357            .debugger_provider
 6358            .as_ref()
 6359            .and_then(|provider| provider.active_thread_state(cx))
 6360        {
 6361            match status {
 6362                ThreadStatus::Running | ThreadStatus::Stepping => {
 6363                    context.add("debugger_running");
 6364                }
 6365                ThreadStatus::Stopped => context.add("debugger_stopped"),
 6366                ThreadStatus::Exited | ThreadStatus::Ended => {}
 6367            }
 6368        }
 6369
 6370        let centered_layout = self.centered_layout
 6371            && self.center.panes().len() == 1
 6372            && self.active_item(cx).is_some();
 6373        let render_padding = |size| {
 6374            (size > 0.0).then(|| {
 6375                div()
 6376                    .h_full()
 6377                    .w(relative(size))
 6378                    .bg(cx.theme().colors().editor_background)
 6379                    .border_color(cx.theme().colors().pane_group_border)
 6380            })
 6381        };
 6382        let paddings = if centered_layout {
 6383            let settings = WorkspaceSettings::get_global(cx).centered_layout;
 6384            (
 6385                render_padding(Self::adjust_padding(settings.left_padding)),
 6386                render_padding(Self::adjust_padding(settings.right_padding)),
 6387            )
 6388        } else {
 6389            (None, None)
 6390        };
 6391        let ui_font = theme::setup_ui_font(window, cx);
 6392
 6393        let theme = cx.theme().clone();
 6394        let colors = theme.colors();
 6395        let notification_entities = self
 6396            .notifications
 6397            .iter()
 6398            .map(|(_, notification)| notification.entity_id())
 6399            .collect::<Vec<_>>();
 6400        let bottom_dock_layout = WorkspaceSettings::get_global(cx).bottom_dock_layout;
 6401
 6402        client_side_decorations(
 6403            self.actions(div(), window, cx)
 6404                .key_context(context)
 6405                .relative()
 6406                .size_full()
 6407                .flex()
 6408                .flex_col()
 6409                .font(ui_font)
 6410                .gap_0()
 6411                .justify_start()
 6412                .items_start()
 6413                .text_color(colors.text)
 6414                .overflow_hidden()
 6415                .children(self.titlebar_item.clone())
 6416                .on_modifiers_changed(move |_, _, cx| {
 6417                    for &id in &notification_entities {
 6418                        cx.notify(id);
 6419                    }
 6420                })
 6421                .child(
 6422                    div()
 6423                        .size_full()
 6424                        .relative()
 6425                        .flex_1()
 6426                        .flex()
 6427                        .flex_col()
 6428                        .child(
 6429                            div()
 6430                                .id("workspace")
 6431                                .bg(colors.background)
 6432                                .relative()
 6433                                .flex_1()
 6434                                .w_full()
 6435                                .flex()
 6436                                .flex_col()
 6437                                .overflow_hidden()
 6438                                .border_t_1()
 6439                                .border_b_1()
 6440                                .border_color(colors.border)
 6441                                .child({
 6442                                    let this = cx.entity();
 6443                                    canvas(
 6444                                        move |bounds, window, cx| {
 6445                                            this.update(cx, |this, cx| {
 6446                                                let bounds_changed = this.bounds != bounds;
 6447                                                this.bounds = bounds;
 6448
 6449                                                if bounds_changed {
 6450                                                    this.left_dock.update(cx, |dock, cx| {
 6451                                                        dock.clamp_panel_size(
 6452                                                            bounds.size.width,
 6453                                                            window,
 6454                                                            cx,
 6455                                                        )
 6456                                                    });
 6457
 6458                                                    this.right_dock.update(cx, |dock, cx| {
 6459                                                        dock.clamp_panel_size(
 6460                                                            bounds.size.width,
 6461                                                            window,
 6462                                                            cx,
 6463                                                        )
 6464                                                    });
 6465
 6466                                                    this.bottom_dock.update(cx, |dock, cx| {
 6467                                                        dock.clamp_panel_size(
 6468                                                            bounds.size.height,
 6469                                                            window,
 6470                                                            cx,
 6471                                                        )
 6472                                                    });
 6473                                                }
 6474                                            })
 6475                                        },
 6476                                        |_, _, _, _| {},
 6477                                    )
 6478                                    .absolute()
 6479                                    .size_full()
 6480                                })
 6481                                .when(self.zoomed.is_none(), |this| {
 6482                                    this.on_drag_move(cx.listener(
 6483                                        move |workspace,
 6484                                              e: &DragMoveEvent<DraggedDock>,
 6485                                              window,
 6486                                              cx| {
 6487                                            if workspace.previous_dock_drag_coordinates
 6488                                                != Some(e.event.position)
 6489                                            {
 6490                                                workspace.previous_dock_drag_coordinates =
 6491                                                    Some(e.event.position);
 6492                                                match e.drag(cx).0 {
 6493                                                    DockPosition::Left => {
 6494                                                        workspace.resize_left_dock(
 6495                                                            e.event.position.x
 6496                                                                - workspace.bounds.left(),
 6497                                                            window,
 6498                                                            cx,
 6499                                                        );
 6500                                                    }
 6501                                                    DockPosition::Right => {
 6502                                                        workspace.resize_right_dock(
 6503                                                            workspace.bounds.right()
 6504                                                                - e.event.position.x,
 6505                                                            window,
 6506                                                            cx,
 6507                                                        );
 6508                                                    }
 6509                                                    DockPosition::Bottom => {
 6510                                                        workspace.resize_bottom_dock(
 6511                                                            workspace.bounds.bottom()
 6512                                                                - e.event.position.y,
 6513                                                            window,
 6514                                                            cx,
 6515                                                        );
 6516                                                    }
 6517                                                };
 6518                                                workspace.serialize_workspace(window, cx);
 6519                                            }
 6520                                        },
 6521                                    ))
 6522                                })
 6523                                .child({
 6524                                    match bottom_dock_layout {
 6525                                        BottomDockLayout::Full => div()
 6526                                            .flex()
 6527                                            .flex_col()
 6528                                            .h_full()
 6529                                            .child(
 6530                                                div()
 6531                                                    .flex()
 6532                                                    .flex_row()
 6533                                                    .flex_1()
 6534                                                    .overflow_hidden()
 6535                                                    .children(self.render_dock(
 6536                                                        DockPosition::Left,
 6537                                                        &self.left_dock,
 6538                                                        window,
 6539                                                        cx,
 6540                                                    ))
 6541                                                    .child(
 6542                                                        div()
 6543                                                            .flex()
 6544                                                            .flex_col()
 6545                                                            .flex_1()
 6546                                                            .overflow_hidden()
 6547                                                            .child(
 6548                                                                h_flex()
 6549                                                                    .flex_1()
 6550                                                                    .when_some(
 6551                                                                        paddings.0,
 6552                                                                        |this, p| {
 6553                                                                            this.child(
 6554                                                                                p.border_r_1(),
 6555                                                                            )
 6556                                                                        },
 6557                                                                    )
 6558                                                                    .child(self.center.render(
 6559                                                                        self.zoomed.as_ref(),
 6560                                                                        &PaneRenderContext {
 6561                                                                            follower_states:
 6562                                                                                &self.follower_states,
 6563                                                                            active_call: self.active_call(),
 6564                                                                            active_pane: &self.active_pane,
 6565                                                                            app_state: &self.app_state,
 6566                                                                            project: &self.project,
 6567                                                                            workspace: &self.weak_self,
 6568                                                                        },
 6569                                                                        window,
 6570                                                                        cx,
 6571                                                                    ))
 6572                                                                    .when_some(
 6573                                                                        paddings.1,
 6574                                                                        |this, p| {
 6575                                                                            this.child(
 6576                                                                                p.border_l_1(),
 6577                                                                            )
 6578                                                                        },
 6579                                                                    ),
 6580                                                            ),
 6581                                                    )
 6582                                                    .children(self.render_dock(
 6583                                                        DockPosition::Right,
 6584                                                        &self.right_dock,
 6585                                                        window,
 6586                                                        cx,
 6587                                                    )),
 6588                                            )
 6589                                            .child(div().w_full().children(self.render_dock(
 6590                                                DockPosition::Bottom,
 6591                                                &self.bottom_dock,
 6592                                                window,
 6593                                                cx
 6594                                            ))),
 6595
 6596                                        BottomDockLayout::LeftAligned => div()
 6597                                            .flex()
 6598                                            .flex_row()
 6599                                            .h_full()
 6600                                            .child(
 6601                                                div()
 6602                                                    .flex()
 6603                                                    .flex_col()
 6604                                                    .flex_1()
 6605                                                    .h_full()
 6606                                                    .child(
 6607                                                        div()
 6608                                                            .flex()
 6609                                                            .flex_row()
 6610                                                            .flex_1()
 6611                                                            .children(self.render_dock(DockPosition::Left, &self.left_dock, window, cx))
 6612                                                            .child(
 6613                                                                div()
 6614                                                                    .flex()
 6615                                                                    .flex_col()
 6616                                                                    .flex_1()
 6617                                                                    .overflow_hidden()
 6618                                                                    .child(
 6619                                                                        h_flex()
 6620                                                                            .flex_1()
 6621                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6622                                                                            .child(self.center.render(
 6623                                                                                self.zoomed.as_ref(),
 6624                                                                                &PaneRenderContext {
 6625                                                                                    follower_states:
 6626                                                                                        &self.follower_states,
 6627                                                                                    active_call: self.active_call(),
 6628                                                                                    active_pane: &self.active_pane,
 6629                                                                                    app_state: &self.app_state,
 6630                                                                                    project: &self.project,
 6631                                                                                    workspace: &self.weak_self,
 6632                                                                                },
 6633                                                                                window,
 6634                                                                                cx,
 6635                                                                            ))
 6636                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6637                                                                    )
 6638                                                            )
 6639                                                    )
 6640                                                    .child(
 6641                                                        div()
 6642                                                            .w_full()
 6643                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6644                                                    ),
 6645                                            )
 6646                                            .children(self.render_dock(
 6647                                                DockPosition::Right,
 6648                                                &self.right_dock,
 6649                                                window,
 6650                                                cx,
 6651                                            )),
 6652
 6653                                        BottomDockLayout::RightAligned => div()
 6654                                            .flex()
 6655                                            .flex_row()
 6656                                            .h_full()
 6657                                            .children(self.render_dock(
 6658                                                DockPosition::Left,
 6659                                                &self.left_dock,
 6660                                                window,
 6661                                                cx,
 6662                                            ))
 6663                                            .child(
 6664                                                div()
 6665                                                    .flex()
 6666                                                    .flex_col()
 6667                                                    .flex_1()
 6668                                                    .h_full()
 6669                                                    .child(
 6670                                                        div()
 6671                                                            .flex()
 6672                                                            .flex_row()
 6673                                                            .flex_1()
 6674                                                            .child(
 6675                                                                div()
 6676                                                                    .flex()
 6677                                                                    .flex_col()
 6678                                                                    .flex_1()
 6679                                                                    .overflow_hidden()
 6680                                                                    .child(
 6681                                                                        h_flex()
 6682                                                                            .flex_1()
 6683                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6684                                                                            .child(self.center.render(
 6685                                                                                self.zoomed.as_ref(),
 6686                                                                                &PaneRenderContext {
 6687                                                                                    follower_states:
 6688                                                                                        &self.follower_states,
 6689                                                                                    active_call: self.active_call(),
 6690                                                                                    active_pane: &self.active_pane,
 6691                                                                                    app_state: &self.app_state,
 6692                                                                                    project: &self.project,
 6693                                                                                    workspace: &self.weak_self,
 6694                                                                                },
 6695                                                                                window,
 6696                                                                                cx,
 6697                                                                            ))
 6698                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6699                                                                    )
 6700                                                            )
 6701                                                            .children(self.render_dock(DockPosition::Right, &self.right_dock, window, cx))
 6702                                                    )
 6703                                                    .child(
 6704                                                        div()
 6705                                                            .w_full()
 6706                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6707                                                    ),
 6708                                            ),
 6709
 6710                                        BottomDockLayout::Contained => div()
 6711                                            .flex()
 6712                                            .flex_row()
 6713                                            .h_full()
 6714                                            .children(self.render_dock(
 6715                                                DockPosition::Left,
 6716                                                &self.left_dock,
 6717                                                window,
 6718                                                cx,
 6719                                            ))
 6720                                            .child(
 6721                                                div()
 6722                                                    .flex()
 6723                                                    .flex_col()
 6724                                                    .flex_1()
 6725                                                    .overflow_hidden()
 6726                                                    .child(
 6727                                                        h_flex()
 6728                                                            .flex_1()
 6729                                                            .when_some(paddings.0, |this, p| {
 6730                                                                this.child(p.border_r_1())
 6731                                                            })
 6732                                                            .child(self.center.render(
 6733                                                                self.zoomed.as_ref(),
 6734                                                                &PaneRenderContext {
 6735                                                                    follower_states:
 6736                                                                        &self.follower_states,
 6737                                                                    active_call: self.active_call(),
 6738                                                                    active_pane: &self.active_pane,
 6739                                                                    app_state: &self.app_state,
 6740                                                                    project: &self.project,
 6741                                                                    workspace: &self.weak_self,
 6742                                                                },
 6743                                                                window,
 6744                                                                cx,
 6745                                                            ))
 6746                                                            .when_some(paddings.1, |this, p| {
 6747                                                                this.child(p.border_l_1())
 6748                                                            }),
 6749                                                    )
 6750                                                    .children(self.render_dock(
 6751                                                        DockPosition::Bottom,
 6752                                                        &self.bottom_dock,
 6753                                                        window,
 6754                                                        cx,
 6755                                                    )),
 6756                                            )
 6757                                            .children(self.render_dock(
 6758                                                DockPosition::Right,
 6759                                                &self.right_dock,
 6760                                                window,
 6761                                                cx,
 6762                                            )),
 6763                                    }
 6764                                })
 6765                                .children(self.zoomed.as_ref().and_then(|view| {
 6766                                    let zoomed_view = view.upgrade()?;
 6767                                    let div = div()
 6768                                        .occlude()
 6769                                        .absolute()
 6770                                        .overflow_hidden()
 6771                                        .border_color(colors.border)
 6772                                        .bg(colors.background)
 6773                                        .child(zoomed_view)
 6774                                        .inset_0()
 6775                                        .shadow_lg();
 6776
 6777                                    if !WorkspaceSettings::get_global(cx).zoomed_padding {
 6778                                       return Some(div);
 6779                                    }
 6780
 6781                                    Some(match self.zoomed_position {
 6782                                        Some(DockPosition::Left) => div.right_2().border_r_1(),
 6783                                        Some(DockPosition::Right) => div.left_2().border_l_1(),
 6784                                        Some(DockPosition::Bottom) => div.top_2().border_t_1(),
 6785                                        None => {
 6786                                            div.top_2().bottom_2().left_2().right_2().border_1()
 6787                                        }
 6788                                    })
 6789                                }))
 6790                                .children(self.render_notifications(window, cx)),
 6791                        )
 6792                        .when(self.status_bar_visible(cx), |parent| {
 6793                            parent.child(self.status_bar.clone())
 6794                        })
 6795                        .child(self.modal_layer.clone())
 6796                        .child(self.toast_layer.clone()),
 6797                ),
 6798            window,
 6799            cx,
 6800        )
 6801    }
 6802}
 6803
 6804impl WorkspaceStore {
 6805    pub fn new(client: Arc<Client>, cx: &mut Context<Self>) -> Self {
 6806        Self {
 6807            workspaces: Default::default(),
 6808            _subscriptions: vec![
 6809                client.add_request_handler(cx.weak_entity(), Self::handle_follow),
 6810                client.add_message_handler(cx.weak_entity(), Self::handle_update_followers),
 6811            ],
 6812            client,
 6813        }
 6814    }
 6815
 6816    pub fn update_followers(
 6817        &self,
 6818        project_id: Option<u64>,
 6819        update: proto::update_followers::Variant,
 6820        cx: &App,
 6821    ) -> Option<()> {
 6822        let active_call = ActiveCall::try_global(cx)?;
 6823        let room_id = active_call.read(cx).room()?.read(cx).id();
 6824        self.client
 6825            .send(proto::UpdateFollowers {
 6826                room_id,
 6827                project_id,
 6828                variant: Some(update),
 6829            })
 6830            .log_err()
 6831    }
 6832
 6833    pub async fn handle_follow(
 6834        this: Entity<Self>,
 6835        envelope: TypedEnvelope<proto::Follow>,
 6836        mut cx: AsyncApp,
 6837    ) -> Result<proto::FollowResponse> {
 6838        this.update(&mut cx, |this, cx| {
 6839            let follower = Follower {
 6840                project_id: envelope.payload.project_id,
 6841                peer_id: envelope.original_sender_id()?,
 6842            };
 6843
 6844            let mut response = proto::FollowResponse::default();
 6845            this.workspaces.retain(|workspace| {
 6846                workspace
 6847                    .update(cx, |workspace, window, cx| {
 6848                        let handler_response =
 6849                            workspace.handle_follow(follower.project_id, window, cx);
 6850                        if let Some(active_view) = handler_response.active_view
 6851                            && workspace.project.read(cx).remote_id() == follower.project_id
 6852                        {
 6853                            response.active_view = Some(active_view)
 6854                        }
 6855                    })
 6856                    .is_ok()
 6857            });
 6858
 6859            Ok(response)
 6860        })?
 6861    }
 6862
 6863    async fn handle_update_followers(
 6864        this: Entity<Self>,
 6865        envelope: TypedEnvelope<proto::UpdateFollowers>,
 6866        mut cx: AsyncApp,
 6867    ) -> Result<()> {
 6868        let leader_id = envelope.original_sender_id()?;
 6869        let update = envelope.payload;
 6870
 6871        this.update(&mut cx, |this, cx| {
 6872            this.workspaces.retain(|workspace| {
 6873                workspace
 6874                    .update(cx, |workspace, window, cx| {
 6875                        let project_id = workspace.project.read(cx).remote_id();
 6876                        if update.project_id != project_id && update.project_id.is_some() {
 6877                            return;
 6878                        }
 6879                        workspace.handle_update_followers(leader_id, update.clone(), window, cx);
 6880                    })
 6881                    .is_ok()
 6882            });
 6883            Ok(())
 6884        })?
 6885    }
 6886
 6887    pub const fn workspaces(&self) -> &HashSet<WindowHandle<Workspace>> {
 6888        &self.workspaces
 6889    }
 6890}
 6891
 6892impl ViewId {
 6893    pub(crate) fn from_proto(message: proto::ViewId) -> Result<Self> {
 6894        Ok(Self {
 6895            creator: message
 6896                .creator
 6897                .map(CollaboratorId::PeerId)
 6898                .context("creator is missing")?,
 6899            id: message.id,
 6900        })
 6901    }
 6902
 6903    pub(crate) const fn to_proto(self) -> Option<proto::ViewId> {
 6904        if let CollaboratorId::PeerId(peer_id) = self.creator {
 6905            Some(proto::ViewId {
 6906                creator: Some(peer_id),
 6907                id: self.id,
 6908            })
 6909        } else {
 6910            None
 6911        }
 6912    }
 6913}
 6914
 6915impl FollowerState {
 6916    fn pane(&self) -> &Entity<Pane> {
 6917        self.dock_pane.as_ref().unwrap_or(&self.center_pane)
 6918    }
 6919}
 6920
 6921pub trait WorkspaceHandle {
 6922    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath>;
 6923}
 6924
 6925impl WorkspaceHandle for Entity<Workspace> {
 6926    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath> {
 6927        self.read(cx)
 6928            .worktrees(cx)
 6929            .flat_map(|worktree| {
 6930                let worktree_id = worktree.read(cx).id();
 6931                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
 6932                    worktree_id,
 6933                    path: f.path.clone(),
 6934                })
 6935            })
 6936            .collect::<Vec<_>>()
 6937    }
 6938}
 6939
 6940pub async fn last_opened_workspace_location() -> Option<(SerializedWorkspaceLocation, PathList)> {
 6941    DB.last_workspace().await.log_err().flatten()
 6942}
 6943
 6944pub fn last_session_workspace_locations(
 6945    last_session_id: &str,
 6946    last_session_window_stack: Option<Vec<WindowId>>,
 6947) -> Option<Vec<(SerializedWorkspaceLocation, PathList)>> {
 6948    DB.last_session_workspace_locations(last_session_id, last_session_window_stack)
 6949        .log_err()
 6950}
 6951
 6952actions!(
 6953    collab,
 6954    [
 6955        /// Opens the channel notes for the current call.
 6956        ///
 6957        /// If you want to open a specific channel, use `zed::OpenZedUrl` with a channel notes URL -
 6958        /// can be copied via "Copy link to section" in the context menu of the channel notes
 6959        /// buffer. These URLs look like `https://zed.dev/channel/channel-name-CHANNEL_ID/notes`.
 6960        OpenChannelNotes,
 6961        /// Mutes your microphone.
 6962        Mute,
 6963        /// Deafens yourself (mute both microphone and speakers).
 6964        Deafen,
 6965        /// Leaves the current call.
 6966        LeaveCall,
 6967        /// Shares the current project with collaborators.
 6968        ShareProject,
 6969        /// Shares your screen with collaborators.
 6970        ScreenShare
 6971    ]
 6972);
 6973actions!(
 6974    zed,
 6975    [
 6976        /// Opens the Zed log file.
 6977        OpenLog
 6978    ]
 6979);
 6980
 6981async fn join_channel_internal(
 6982    channel_id: ChannelId,
 6983    app_state: &Arc<AppState>,
 6984    requesting_window: Option<WindowHandle<Workspace>>,
 6985    active_call: &Entity<ActiveCall>,
 6986    cx: &mut AsyncApp,
 6987) -> Result<bool> {
 6988    let (should_prompt, open_room) = active_call.update(cx, |active_call, cx| {
 6989        let Some(room) = active_call.room().map(|room| room.read(cx)) else {
 6990            return (false, None);
 6991        };
 6992
 6993        let already_in_channel = room.channel_id() == Some(channel_id);
 6994        let should_prompt = room.is_sharing_project()
 6995            && !room.remote_participants().is_empty()
 6996            && !already_in_channel;
 6997        let open_room = if already_in_channel {
 6998            active_call.room().cloned()
 6999        } else {
 7000            None
 7001        };
 7002        (should_prompt, open_room)
 7003    })?;
 7004
 7005    if let Some(room) = open_room {
 7006        let task = room.update(cx, |room, cx| {
 7007            if let Some((project, host)) = room.most_active_project(cx) {
 7008                return Some(join_in_room_project(project, host, app_state.clone(), cx));
 7009            }
 7010
 7011            None
 7012        })?;
 7013        if let Some(task) = task {
 7014            task.await?;
 7015        }
 7016        return anyhow::Ok(true);
 7017    }
 7018
 7019    if should_prompt {
 7020        if let Some(workspace) = requesting_window {
 7021            let answer = workspace
 7022                .update(cx, |_, window, cx| {
 7023                    window.prompt(
 7024                        PromptLevel::Warning,
 7025                        "Do you want to switch channels?",
 7026                        Some("Leaving this call will unshare your current project."),
 7027                        &["Yes, Join Channel", "Cancel"],
 7028                        cx,
 7029                    )
 7030                })?
 7031                .await;
 7032
 7033            if answer == Ok(1) {
 7034                return Ok(false);
 7035            }
 7036        } else {
 7037            return Ok(false); // unreachable!() hopefully
 7038        }
 7039    }
 7040
 7041    let client = cx.update(|cx| active_call.read(cx).client())?;
 7042
 7043    let mut client_status = client.status();
 7044
 7045    // this loop will terminate within client::CONNECTION_TIMEOUT seconds.
 7046    'outer: loop {
 7047        let Some(status) = client_status.recv().await else {
 7048            anyhow::bail!("error connecting");
 7049        };
 7050
 7051        match status {
 7052            Status::Connecting
 7053            | Status::Authenticating
 7054            | Status::Authenticated
 7055            | Status::Reconnecting
 7056            | Status::Reauthenticating
 7057            | Status::Reauthenticated => continue,
 7058            Status::Connected { .. } => break 'outer,
 7059            Status::SignedOut | Status::AuthenticationError => {
 7060                return Err(ErrorCode::SignedOut.into());
 7061            }
 7062            Status::UpgradeRequired => return Err(ErrorCode::UpgradeRequired.into()),
 7063            Status::ConnectionError | Status::ConnectionLost | Status::ReconnectionError { .. } => {
 7064                return Err(ErrorCode::Disconnected.into());
 7065            }
 7066        }
 7067    }
 7068
 7069    let room = active_call
 7070        .update(cx, |active_call, cx| {
 7071            active_call.join_channel(channel_id, cx)
 7072        })?
 7073        .await?;
 7074
 7075    let Some(room) = room else {
 7076        return anyhow::Ok(true);
 7077    };
 7078
 7079    room.update(cx, |room, _| room.room_update_completed())?
 7080        .await;
 7081
 7082    let task = room.update(cx, |room, cx| {
 7083        if let Some((project, host)) = room.most_active_project(cx) {
 7084            return Some(join_in_room_project(project, host, app_state.clone(), cx));
 7085        }
 7086
 7087        // If you are the first to join a channel, see if you should share your project.
 7088        if room.remote_participants().is_empty()
 7089            && !room.local_participant_is_guest()
 7090            && let Some(workspace) = requesting_window
 7091        {
 7092            let project = workspace.update(cx, |workspace, _, cx| {
 7093                let project = workspace.project.read(cx);
 7094
 7095                if !CallSettings::get_global(cx).share_on_join {
 7096                    return None;
 7097                }
 7098
 7099                if (project.is_local() || project.is_via_remote_server())
 7100                    && project.visible_worktrees(cx).any(|tree| {
 7101                        tree.read(cx)
 7102                            .root_entry()
 7103                            .is_some_and(|entry| entry.is_dir())
 7104                    })
 7105                {
 7106                    Some(workspace.project.clone())
 7107                } else {
 7108                    None
 7109                }
 7110            });
 7111            if let Ok(Some(project)) = project {
 7112                return Some(cx.spawn(async move |room, cx| {
 7113                    room.update(cx, |room, cx| room.share_project(project, cx))?
 7114                        .await?;
 7115                    Ok(())
 7116                }));
 7117            }
 7118        }
 7119
 7120        None
 7121    })?;
 7122    if let Some(task) = task {
 7123        task.await?;
 7124        return anyhow::Ok(true);
 7125    }
 7126    anyhow::Ok(false)
 7127}
 7128
 7129pub fn join_channel(
 7130    channel_id: ChannelId,
 7131    app_state: Arc<AppState>,
 7132    requesting_window: Option<WindowHandle<Workspace>>,
 7133    cx: &mut App,
 7134) -> Task<Result<()>> {
 7135    let active_call = ActiveCall::global(cx);
 7136    cx.spawn(async move |cx| {
 7137        let result = join_channel_internal(
 7138            channel_id,
 7139            &app_state,
 7140            requesting_window,
 7141            &active_call,
 7142             cx,
 7143        )
 7144            .await;
 7145
 7146        // join channel succeeded, and opened a window
 7147        if matches!(result, Ok(true)) {
 7148            return anyhow::Ok(());
 7149        }
 7150
 7151        // find an existing workspace to focus and show call controls
 7152        let mut active_window =
 7153            requesting_window.or_else(|| activate_any_workspace_window( cx));
 7154        if active_window.is_none() {
 7155            // no open workspaces, make one to show the error in (blergh)
 7156            let (window_handle, _) = cx
 7157                .update(|cx| {
 7158                    Workspace::new_local(vec![], app_state.clone(), requesting_window, None, cx)
 7159                })?
 7160                .await?;
 7161
 7162            if result.is_ok() {
 7163                cx.update(|cx| {
 7164                    cx.dispatch_action(&OpenChannelNotes);
 7165                }).log_err();
 7166            }
 7167
 7168            active_window = Some(window_handle);
 7169        }
 7170
 7171        if let Err(err) = result {
 7172            log::error!("failed to join channel: {}", err);
 7173            if let Some(active_window) = active_window {
 7174                active_window
 7175                    .update(cx, |_, window, cx| {
 7176                        let detail: SharedString = match err.error_code() {
 7177                            ErrorCode::SignedOut => {
 7178                                "Please sign in to continue.".into()
 7179                            }
 7180                            ErrorCode::UpgradeRequired => {
 7181                                "Your are running an unsupported version of Zed. Please update to continue.".into()
 7182                            }
 7183                            ErrorCode::NoSuchChannel => {
 7184                                "No matching channel was found. Please check the link and try again.".into()
 7185                            }
 7186                            ErrorCode::Forbidden => {
 7187                                "This channel is private, and you do not have access. Please ask someone to add you and try again.".into()
 7188                            }
 7189                            ErrorCode::Disconnected => "Please check your internet connection and try again.".into(),
 7190                            _ => format!("{}\n\nPlease try again.", err).into(),
 7191                        };
 7192                        window.prompt(
 7193                            PromptLevel::Critical,
 7194                            "Failed to join channel",
 7195                            Some(&detail),
 7196                            &["Ok"],
 7197                        cx)
 7198                    })?
 7199                    .await
 7200                    .ok();
 7201            }
 7202        }
 7203
 7204        // return ok, we showed the error to the user.
 7205        anyhow::Ok(())
 7206    })
 7207}
 7208
 7209pub async fn get_any_active_workspace(
 7210    app_state: Arc<AppState>,
 7211    mut cx: AsyncApp,
 7212) -> anyhow::Result<WindowHandle<Workspace>> {
 7213    // find an existing workspace to focus and show call controls
 7214    let active_window = activate_any_workspace_window(&mut cx);
 7215    if active_window.is_none() {
 7216        cx.update(|cx| Workspace::new_local(vec![], app_state.clone(), None, None, cx))?
 7217            .await?;
 7218    }
 7219    activate_any_workspace_window(&mut cx).context("could not open zed")
 7220}
 7221
 7222fn activate_any_workspace_window(cx: &mut AsyncApp) -> Option<WindowHandle<Workspace>> {
 7223    cx.update(|cx| {
 7224        if let Some(workspace_window) = cx
 7225            .active_window()
 7226            .and_then(|window| window.downcast::<Workspace>())
 7227        {
 7228            return Some(workspace_window);
 7229        }
 7230
 7231        for window in cx.windows() {
 7232            if let Some(workspace_window) = window.downcast::<Workspace>() {
 7233                workspace_window
 7234                    .update(cx, |_, window, _| window.activate_window())
 7235                    .ok();
 7236                return Some(workspace_window);
 7237            }
 7238        }
 7239        None
 7240    })
 7241    .ok()
 7242    .flatten()
 7243}
 7244
 7245pub fn local_workspace_windows(cx: &App) -> Vec<WindowHandle<Workspace>> {
 7246    cx.windows()
 7247        .into_iter()
 7248        .filter_map(|window| window.downcast::<Workspace>())
 7249        .filter(|workspace| {
 7250            workspace
 7251                .read(cx)
 7252                .is_ok_and(|workspace| workspace.project.read(cx).is_local())
 7253        })
 7254        .collect()
 7255}
 7256
 7257#[derive(Default)]
 7258pub struct OpenOptions {
 7259    pub visible: Option<OpenVisible>,
 7260    pub focus: Option<bool>,
 7261    pub open_new_workspace: Option<bool>,
 7262    pub replace_window: Option<WindowHandle<Workspace>>,
 7263    pub env: Option<HashMap<String, String>>,
 7264}
 7265
 7266#[allow(clippy::type_complexity)]
 7267pub fn open_paths(
 7268    abs_paths: &[PathBuf],
 7269    app_state: Arc<AppState>,
 7270    open_options: OpenOptions,
 7271    cx: &mut App,
 7272) -> Task<
 7273    anyhow::Result<(
 7274        WindowHandle<Workspace>,
 7275        Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 7276    )>,
 7277> {
 7278    let abs_paths = abs_paths.to_vec();
 7279    let mut existing = None;
 7280    let mut best_match = None;
 7281    let mut open_visible = OpenVisible::All;
 7282
 7283    cx.spawn(async move |cx| {
 7284        if open_options.open_new_workspace != Some(true) {
 7285            let all_paths = abs_paths.iter().map(|path| app_state.fs.metadata(path));
 7286            let all_metadatas = futures::future::join_all(all_paths)
 7287                .await
 7288                .into_iter()
 7289                .filter_map(|result| result.ok().flatten())
 7290                .collect::<Vec<_>>();
 7291
 7292            cx.update(|cx| {
 7293                for window in local_workspace_windows(cx) {
 7294                    if let Ok(workspace) = window.read(cx) {
 7295                        let m = workspace.project.read(cx).visibility_for_paths(
 7296                            &abs_paths,
 7297                            &all_metadatas,
 7298                            open_options.open_new_workspace == None,
 7299                            cx,
 7300                        );
 7301                        if m > best_match {
 7302                            existing = Some(window);
 7303                            best_match = m;
 7304                        } else if best_match.is_none()
 7305                            && open_options.open_new_workspace == Some(false)
 7306                        {
 7307                            existing = Some(window)
 7308                        }
 7309                    }
 7310                }
 7311            })?;
 7312
 7313            if open_options.open_new_workspace.is_none()
 7314                && existing.is_none()
 7315                && all_metadatas.iter().all(|file| !file.is_dir)
 7316            {
 7317                cx.update(|cx| {
 7318                    if let Some(window) = cx
 7319                        .active_window()
 7320                        .and_then(|window| window.downcast::<Workspace>())
 7321                        && let Ok(workspace) = window.read(cx)
 7322                    {
 7323                        let project = workspace.project().read(cx);
 7324                        if project.is_local() && !project.is_via_collab() {
 7325                            existing = Some(window);
 7326                            open_visible = OpenVisible::None;
 7327                            return;
 7328                        }
 7329                    }
 7330                    for window in local_workspace_windows(cx) {
 7331                        if let Ok(workspace) = window.read(cx) {
 7332                            let project = workspace.project().read(cx);
 7333                            if project.is_via_collab() {
 7334                                continue;
 7335                            }
 7336                            existing = Some(window);
 7337                            open_visible = OpenVisible::None;
 7338                            break;
 7339                        }
 7340                    }
 7341                })?;
 7342            }
 7343        }
 7344
 7345        if let Some(existing) = existing {
 7346            let open_task = existing
 7347                .update(cx, |workspace, window, cx| {
 7348                    window.activate_window();
 7349                    workspace.open_paths(
 7350                        abs_paths,
 7351                        OpenOptions {
 7352                            visible: Some(open_visible),
 7353                            ..Default::default()
 7354                        },
 7355                        None,
 7356                        window,
 7357                        cx,
 7358                    )
 7359                })?
 7360                .await;
 7361
 7362            _ = existing.update(cx, |workspace, _, cx| {
 7363                for item in open_task.iter().flatten() {
 7364                    if let Err(e) = item {
 7365                        workspace.show_error(&e, cx);
 7366                    }
 7367                }
 7368            });
 7369
 7370            Ok((existing, open_task))
 7371        } else {
 7372            cx.update(move |cx| {
 7373                Workspace::new_local(
 7374                    abs_paths,
 7375                    app_state.clone(),
 7376                    open_options.replace_window,
 7377                    open_options.env,
 7378                    cx,
 7379                )
 7380            })?
 7381            .await
 7382        }
 7383    })
 7384}
 7385
 7386pub fn open_new(
 7387    open_options: OpenOptions,
 7388    app_state: Arc<AppState>,
 7389    cx: &mut App,
 7390    init: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + 'static + Send,
 7391) -> Task<anyhow::Result<()>> {
 7392    let task = Workspace::new_local(Vec::new(), app_state, None, open_options.env, cx);
 7393    cx.spawn(async move |cx| {
 7394        let (workspace, opened_paths) = task.await?;
 7395        workspace.update(cx, |workspace, window, cx| {
 7396            if opened_paths.is_empty() {
 7397                init(workspace, window, cx)
 7398            }
 7399        })?;
 7400        Ok(())
 7401    })
 7402}
 7403
 7404pub fn create_and_open_local_file(
 7405    path: &'static Path,
 7406    window: &mut Window,
 7407    cx: &mut Context<Workspace>,
 7408    default_content: impl 'static + Send + FnOnce() -> Rope,
 7409) -> Task<Result<Box<dyn ItemHandle>>> {
 7410    cx.spawn_in(window, async move |workspace, cx| {
 7411        let fs = workspace.read_with(cx, |workspace, _| workspace.app_state().fs.clone())?;
 7412        if !fs.is_file(path).await {
 7413            fs.create_file(path, Default::default()).await?;
 7414            fs.save(path, &default_content(), Default::default())
 7415                .await?;
 7416        }
 7417
 7418        let mut items = workspace
 7419            .update_in(cx, |workspace, window, cx| {
 7420                workspace.with_local_workspace(window, cx, |workspace, window, cx| {
 7421                    workspace.open_paths(
 7422                        vec![path.to_path_buf()],
 7423                        OpenOptions {
 7424                            visible: Some(OpenVisible::None),
 7425                            ..Default::default()
 7426                        },
 7427                        None,
 7428                        window,
 7429                        cx,
 7430                    )
 7431                })
 7432            })?
 7433            .await?
 7434            .await;
 7435
 7436        let item = items.pop().flatten();
 7437        item.with_context(|| format!("path {path:?} is not a file"))?
 7438    })
 7439}
 7440
 7441pub fn open_remote_project_with_new_connection(
 7442    window: WindowHandle<Workspace>,
 7443    remote_connection: Arc<dyn RemoteConnection>,
 7444    cancel_rx: oneshot::Receiver<()>,
 7445    delegate: Arc<dyn RemoteClientDelegate>,
 7446    app_state: Arc<AppState>,
 7447    paths: Vec<PathBuf>,
 7448    cx: &mut App,
 7449) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 7450    cx.spawn(async move |cx| {
 7451        let (workspace_id, serialized_workspace) =
 7452            serialize_remote_project(remote_connection.connection_options(), paths.clone(), cx)
 7453                .await?;
 7454
 7455        let session = match cx
 7456            .update(|cx| {
 7457                remote::RemoteClient::new(
 7458                    ConnectionIdentifier::Workspace(workspace_id.0),
 7459                    remote_connection,
 7460                    cancel_rx,
 7461                    delegate,
 7462                    cx,
 7463                )
 7464            })?
 7465            .await?
 7466        {
 7467            Some(result) => result,
 7468            None => return Ok(Vec::new()),
 7469        };
 7470
 7471        let project = cx.update(|cx| {
 7472            project::Project::remote(
 7473                session,
 7474                app_state.client.clone(),
 7475                app_state.node_runtime.clone(),
 7476                app_state.user_store.clone(),
 7477                app_state.languages.clone(),
 7478                app_state.fs.clone(),
 7479                cx,
 7480            )
 7481        })?;
 7482
 7483        open_remote_project_inner(
 7484            project,
 7485            paths,
 7486            workspace_id,
 7487            serialized_workspace,
 7488            app_state,
 7489            window,
 7490            cx,
 7491        )
 7492        .await
 7493    })
 7494}
 7495
 7496pub fn open_remote_project_with_existing_connection(
 7497    connection_options: RemoteConnectionOptions,
 7498    project: Entity<Project>,
 7499    paths: Vec<PathBuf>,
 7500    app_state: Arc<AppState>,
 7501    window: WindowHandle<Workspace>,
 7502    cx: &mut AsyncApp,
 7503) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 7504    cx.spawn(async move |cx| {
 7505        let (workspace_id, serialized_workspace) =
 7506            serialize_remote_project(connection_options.clone(), paths.clone(), cx).await?;
 7507
 7508        open_remote_project_inner(
 7509            project,
 7510            paths,
 7511            workspace_id,
 7512            serialized_workspace,
 7513            app_state,
 7514            window,
 7515            cx,
 7516        )
 7517        .await
 7518    })
 7519}
 7520
 7521async fn open_remote_project_inner(
 7522    project: Entity<Project>,
 7523    paths: Vec<PathBuf>,
 7524    workspace_id: WorkspaceId,
 7525    serialized_workspace: Option<SerializedWorkspace>,
 7526    app_state: Arc<AppState>,
 7527    window: WindowHandle<Workspace>,
 7528    cx: &mut AsyncApp,
 7529) -> Result<Vec<Option<Box<dyn ItemHandle>>>> {
 7530    let toolchains = DB.toolchains(workspace_id).await?;
 7531    for (toolchain, worktree_id, path) in toolchains {
 7532        project
 7533            .update(cx, |this, cx| {
 7534                this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 7535            })?
 7536            .await;
 7537    }
 7538    let mut project_paths_to_open = vec![];
 7539    let mut project_path_errors = vec![];
 7540
 7541    for path in paths {
 7542        let result = cx
 7543            .update(|cx| Workspace::project_path_for_path(project.clone(), &path, true, cx))?
 7544            .await;
 7545        match result {
 7546            Ok((_, project_path)) => {
 7547                project_paths_to_open.push((path.clone(), Some(project_path)));
 7548            }
 7549            Err(error) => {
 7550                project_path_errors.push(error);
 7551            }
 7552        };
 7553    }
 7554
 7555    if project_paths_to_open.is_empty() {
 7556        return Err(project_path_errors.pop().context("no paths given")?);
 7557    }
 7558
 7559    if let Some(detach_session_task) = window
 7560        .update(cx, |_workspace, window, cx| {
 7561            cx.spawn_in(window, async move |this, cx| {
 7562                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))
 7563            })
 7564        })
 7565        .ok()
 7566    {
 7567        detach_session_task.await.ok();
 7568    }
 7569
 7570    cx.update_window(window.into(), |_, window, cx| {
 7571        window.replace_root(cx, |window, cx| {
 7572            telemetry::event!("SSH Project Opened");
 7573
 7574            let mut workspace =
 7575                Workspace::new(Some(workspace_id), project, app_state.clone(), window, cx);
 7576            workspace.update_history(cx);
 7577
 7578            if let Some(ref serialized) = serialized_workspace {
 7579                workspace.centered_layout = serialized.centered_layout;
 7580            }
 7581
 7582            workspace
 7583        });
 7584    })?;
 7585
 7586    let items = window
 7587        .update(cx, |_, window, cx| {
 7588            window.activate_window();
 7589            open_items(serialized_workspace, project_paths_to_open, window, cx)
 7590        })?
 7591        .await?;
 7592
 7593    window.update(cx, |workspace, _, cx| {
 7594        for error in project_path_errors {
 7595            if error.error_code() == proto::ErrorCode::DevServerProjectPathDoesNotExist {
 7596                if let Some(path) = error.error_tag("path") {
 7597                    workspace.show_error(&anyhow!("'{path}' does not exist"), cx)
 7598                }
 7599            } else {
 7600                workspace.show_error(&error, cx)
 7601            }
 7602        }
 7603    })?;
 7604
 7605    Ok(items.into_iter().map(|item| item?.ok()).collect())
 7606}
 7607
 7608fn serialize_remote_project(
 7609    connection_options: RemoteConnectionOptions,
 7610    paths: Vec<PathBuf>,
 7611    cx: &AsyncApp,
 7612) -> Task<Result<(WorkspaceId, Option<SerializedWorkspace>)>> {
 7613    cx.background_spawn(async move {
 7614        let remote_connection_id = persistence::DB
 7615            .get_or_create_remote_connection(connection_options)
 7616            .await?;
 7617
 7618        let serialized_workspace =
 7619            persistence::DB.remote_workspace_for_roots(&paths, remote_connection_id);
 7620
 7621        let workspace_id = if let Some(workspace_id) =
 7622            serialized_workspace.as_ref().map(|workspace| workspace.id)
 7623        {
 7624            workspace_id
 7625        } else {
 7626            persistence::DB.next_id().await?
 7627        };
 7628
 7629        Ok((workspace_id, serialized_workspace))
 7630    })
 7631}
 7632
 7633pub fn join_in_room_project(
 7634    project_id: u64,
 7635    follow_user_id: u64,
 7636    app_state: Arc<AppState>,
 7637    cx: &mut App,
 7638) -> Task<Result<()>> {
 7639    let windows = cx.windows();
 7640    cx.spawn(async move |cx| {
 7641        let existing_workspace = windows.into_iter().find_map(|window_handle| {
 7642            window_handle
 7643                .downcast::<Workspace>()
 7644                .and_then(|window_handle| {
 7645                    window_handle
 7646                        .update(cx, |workspace, _window, cx| {
 7647                            if workspace.project().read(cx).remote_id() == Some(project_id) {
 7648                                Some(window_handle)
 7649                            } else {
 7650                                None
 7651                            }
 7652                        })
 7653                        .unwrap_or(None)
 7654                })
 7655        });
 7656
 7657        let workspace = if let Some(existing_workspace) = existing_workspace {
 7658            existing_workspace
 7659        } else {
 7660            let active_call = cx.update(|cx| ActiveCall::global(cx))?;
 7661            let room = active_call
 7662                .read_with(cx, |call, _| call.room().cloned())?
 7663                .context("not in a call")?;
 7664            let project = room
 7665                .update(cx, |room, cx| {
 7666                    room.join_project(
 7667                        project_id,
 7668                        app_state.languages.clone(),
 7669                        app_state.fs.clone(),
 7670                        cx,
 7671                    )
 7672                })?
 7673                .await?;
 7674
 7675            let window_bounds_override = window_bounds_env_override();
 7676            cx.update(|cx| {
 7677                let mut options = (app_state.build_window_options)(None, cx);
 7678                options.window_bounds = window_bounds_override.map(WindowBounds::Windowed);
 7679                cx.open_window(options, |window, cx| {
 7680                    cx.new(|cx| {
 7681                        Workspace::new(Default::default(), project, app_state.clone(), window, cx)
 7682                    })
 7683                })
 7684            })??
 7685        };
 7686
 7687        workspace.update(cx, |workspace, window, cx| {
 7688            cx.activate(true);
 7689            window.activate_window();
 7690
 7691            if let Some(room) = ActiveCall::global(cx).read(cx).room().cloned() {
 7692                let follow_peer_id = room
 7693                    .read(cx)
 7694                    .remote_participants()
 7695                    .iter()
 7696                    .find(|(_, participant)| participant.user.id == follow_user_id)
 7697                    .map(|(_, p)| p.peer_id)
 7698                    .or_else(|| {
 7699                        // If we couldn't follow the given user, follow the host instead.
 7700                        let collaborator = workspace
 7701                            .project()
 7702                            .read(cx)
 7703                            .collaborators()
 7704                            .values()
 7705                            .find(|collaborator| collaborator.is_host)?;
 7706                        Some(collaborator.peer_id)
 7707                    });
 7708
 7709                if let Some(follow_peer_id) = follow_peer_id {
 7710                    workspace.follow(follow_peer_id, window, cx);
 7711                }
 7712            }
 7713        })?;
 7714
 7715        anyhow::Ok(())
 7716    })
 7717}
 7718
 7719pub fn reload(cx: &mut App) {
 7720    let should_confirm = WorkspaceSettings::get_global(cx).confirm_quit;
 7721    let mut workspace_windows = cx
 7722        .windows()
 7723        .into_iter()
 7724        .filter_map(|window| window.downcast::<Workspace>())
 7725        .collect::<Vec<_>>();
 7726
 7727    // If multiple windows have unsaved changes, and need a save prompt,
 7728    // prompt in the active window before switching to a different window.
 7729    workspace_windows.sort_by_key(|window| window.is_active(cx) == Some(false));
 7730
 7731    let mut prompt = None;
 7732    if let (true, Some(window)) = (should_confirm, workspace_windows.first()) {
 7733        prompt = window
 7734            .update(cx, |_, window, cx| {
 7735                window.prompt(
 7736                    PromptLevel::Info,
 7737                    "Are you sure you want to restart?",
 7738                    None,
 7739                    &["Restart", "Cancel"],
 7740                    cx,
 7741                )
 7742            })
 7743            .ok();
 7744    }
 7745
 7746    cx.spawn(async move |cx| {
 7747        if let Some(prompt) = prompt {
 7748            let answer = prompt.await?;
 7749            if answer != 0 {
 7750                return Ok(());
 7751            }
 7752        }
 7753
 7754        // If the user cancels any save prompt, then keep the app open.
 7755        for window in workspace_windows {
 7756            if let Ok(should_close) = window.update(cx, |workspace, window, cx| {
 7757                workspace.prepare_to_close(CloseIntent::Quit, window, cx)
 7758            }) && !should_close.await?
 7759            {
 7760                return Ok(());
 7761            }
 7762        }
 7763        cx.update(|cx| cx.restart())
 7764    })
 7765    .detach_and_log_err(cx);
 7766}
 7767
 7768fn parse_pixel_position_env_var(value: &str) -> Option<Point<Pixels>> {
 7769    let mut parts = value.split(',');
 7770    let x: usize = parts.next()?.parse().ok()?;
 7771    let y: usize = parts.next()?.parse().ok()?;
 7772    Some(point(px(x as f32), px(y as f32)))
 7773}
 7774
 7775fn parse_pixel_size_env_var(value: &str) -> Option<Size<Pixels>> {
 7776    let mut parts = value.split(',');
 7777    let width: usize = parts.next()?.parse().ok()?;
 7778    let height: usize = parts.next()?.parse().ok()?;
 7779    Some(size(px(width as f32), px(height as f32)))
 7780}
 7781
 7782/// Add client-side decorations (rounded corners, shadows, resize handling) when appropriate.
 7783pub fn client_side_decorations(
 7784    element: impl IntoElement,
 7785    window: &mut Window,
 7786    cx: &mut App,
 7787) -> Stateful<Div> {
 7788    const BORDER_SIZE: Pixels = px(1.0);
 7789    let decorations = window.window_decorations();
 7790
 7791    match decorations {
 7792        Decorations::Client { .. } => window.set_client_inset(theme::CLIENT_SIDE_DECORATION_SHADOW),
 7793        Decorations::Server => window.set_client_inset(px(0.0)),
 7794    }
 7795
 7796    struct GlobalResizeEdge(ResizeEdge);
 7797    impl Global for GlobalResizeEdge {}
 7798
 7799    div()
 7800        .id("window-backdrop")
 7801        .bg(transparent_black())
 7802        .map(|div| match decorations {
 7803            Decorations::Server => div,
 7804            Decorations::Client { tiling, .. } => div
 7805                .when(!(tiling.top || tiling.right), |div| {
 7806                    div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7807                })
 7808                .when(!(tiling.top || tiling.left), |div| {
 7809                    div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7810                })
 7811                .when(!(tiling.bottom || tiling.right), |div| {
 7812                    div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7813                })
 7814                .when(!(tiling.bottom || tiling.left), |div| {
 7815                    div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7816                })
 7817                .when(!tiling.top, |div| {
 7818                    div.pt(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7819                })
 7820                .when(!tiling.bottom, |div| {
 7821                    div.pb(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7822                })
 7823                .when(!tiling.left, |div| {
 7824                    div.pl(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7825                })
 7826                .when(!tiling.right, |div| {
 7827                    div.pr(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7828                })
 7829                .on_mouse_move(move |e, window, cx| {
 7830                    let size = window.window_bounds().get_bounds().size;
 7831                    let pos = e.position;
 7832
 7833                    let new_edge =
 7834                        resize_edge(pos, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling);
 7835
 7836                    let edge = cx.try_global::<GlobalResizeEdge>();
 7837                    if new_edge != edge.map(|edge| edge.0) {
 7838                        window
 7839                            .window_handle()
 7840                            .update(cx, |workspace, _, cx| {
 7841                                cx.notify(workspace.entity_id());
 7842                            })
 7843                            .ok();
 7844                    }
 7845                })
 7846                .on_mouse_down(MouseButton::Left, move |e, window, _| {
 7847                    let size = window.window_bounds().get_bounds().size;
 7848                    let pos = e.position;
 7849
 7850                    let edge = match resize_edge(
 7851                        pos,
 7852                        theme::CLIENT_SIDE_DECORATION_SHADOW,
 7853                        size,
 7854                        tiling,
 7855                    ) {
 7856                        Some(value) => value,
 7857                        None => return,
 7858                    };
 7859
 7860                    window.start_window_resize(edge);
 7861                }),
 7862        })
 7863        .size_full()
 7864        .child(
 7865            div()
 7866                .cursor(CursorStyle::Arrow)
 7867                .map(|div| match decorations {
 7868                    Decorations::Server => div,
 7869                    Decorations::Client { tiling } => div
 7870                        .border_color(cx.theme().colors().border)
 7871                        .when(!(tiling.top || tiling.right), |div| {
 7872                            div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7873                        })
 7874                        .when(!(tiling.top || tiling.left), |div| {
 7875                            div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7876                        })
 7877                        .when(!(tiling.bottom || tiling.right), |div| {
 7878                            div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7879                        })
 7880                        .when(!(tiling.bottom || tiling.left), |div| {
 7881                            div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7882                        })
 7883                        .when(!tiling.top, |div| div.border_t(BORDER_SIZE))
 7884                        .when(!tiling.bottom, |div| div.border_b(BORDER_SIZE))
 7885                        .when(!tiling.left, |div| div.border_l(BORDER_SIZE))
 7886                        .when(!tiling.right, |div| div.border_r(BORDER_SIZE))
 7887                        .when(!tiling.is_tiled(), |div| {
 7888                            div.shadow(vec![gpui::BoxShadow {
 7889                                color: Hsla {
 7890                                    h: 0.,
 7891                                    s: 0.,
 7892                                    l: 0.,
 7893                                    a: 0.4,
 7894                                },
 7895                                blur_radius: theme::CLIENT_SIDE_DECORATION_SHADOW / 2.,
 7896                                spread_radius: px(0.),
 7897                                offset: point(px(0.0), px(0.0)),
 7898                            }])
 7899                        }),
 7900                })
 7901                .on_mouse_move(|_e, _, cx| {
 7902                    cx.stop_propagation();
 7903                })
 7904                .size_full()
 7905                .child(element),
 7906        )
 7907        .map(|div| match decorations {
 7908            Decorations::Server => div,
 7909            Decorations::Client { tiling, .. } => div.child(
 7910                canvas(
 7911                    |_bounds, window, _| {
 7912                        window.insert_hitbox(
 7913                            Bounds::new(
 7914                                point(px(0.0), px(0.0)),
 7915                                window.window_bounds().get_bounds().size,
 7916                            ),
 7917                            HitboxBehavior::Normal,
 7918                        )
 7919                    },
 7920                    move |_bounds, hitbox, window, cx| {
 7921                        let mouse = window.mouse_position();
 7922                        let size = window.window_bounds().get_bounds().size;
 7923                        let Some(edge) =
 7924                            resize_edge(mouse, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling)
 7925                        else {
 7926                            return;
 7927                        };
 7928                        cx.set_global(GlobalResizeEdge(edge));
 7929                        window.set_cursor_style(
 7930                            match edge {
 7931                                ResizeEdge::Top | ResizeEdge::Bottom => CursorStyle::ResizeUpDown,
 7932                                ResizeEdge::Left | ResizeEdge::Right => {
 7933                                    CursorStyle::ResizeLeftRight
 7934                                }
 7935                                ResizeEdge::TopLeft | ResizeEdge::BottomRight => {
 7936                                    CursorStyle::ResizeUpLeftDownRight
 7937                                }
 7938                                ResizeEdge::TopRight | ResizeEdge::BottomLeft => {
 7939                                    CursorStyle::ResizeUpRightDownLeft
 7940                                }
 7941                            },
 7942                            &hitbox,
 7943                        );
 7944                    },
 7945                )
 7946                .size_full()
 7947                .absolute(),
 7948            ),
 7949        })
 7950}
 7951
 7952fn resize_edge(
 7953    pos: Point<Pixels>,
 7954    shadow_size: Pixels,
 7955    window_size: Size<Pixels>,
 7956    tiling: Tiling,
 7957) -> Option<ResizeEdge> {
 7958    let bounds = Bounds::new(Point::default(), window_size).inset(shadow_size * 1.5);
 7959    if bounds.contains(&pos) {
 7960        return None;
 7961    }
 7962
 7963    let corner_size = size(shadow_size * 1.5, shadow_size * 1.5);
 7964    let top_left_bounds = Bounds::new(Point::new(px(0.), px(0.)), corner_size);
 7965    if !tiling.top && top_left_bounds.contains(&pos) {
 7966        return Some(ResizeEdge::TopLeft);
 7967    }
 7968
 7969    let top_right_bounds = Bounds::new(
 7970        Point::new(window_size.width - corner_size.width, px(0.)),
 7971        corner_size,
 7972    );
 7973    if !tiling.top && top_right_bounds.contains(&pos) {
 7974        return Some(ResizeEdge::TopRight);
 7975    }
 7976
 7977    let bottom_left_bounds = Bounds::new(
 7978        Point::new(px(0.), window_size.height - corner_size.height),
 7979        corner_size,
 7980    );
 7981    if !tiling.bottom && bottom_left_bounds.contains(&pos) {
 7982        return Some(ResizeEdge::BottomLeft);
 7983    }
 7984
 7985    let bottom_right_bounds = Bounds::new(
 7986        Point::new(
 7987            window_size.width - corner_size.width,
 7988            window_size.height - corner_size.height,
 7989        ),
 7990        corner_size,
 7991    );
 7992    if !tiling.bottom && bottom_right_bounds.contains(&pos) {
 7993        return Some(ResizeEdge::BottomRight);
 7994    }
 7995
 7996    if !tiling.top && pos.y < shadow_size {
 7997        Some(ResizeEdge::Top)
 7998    } else if !tiling.bottom && pos.y > window_size.height - shadow_size {
 7999        Some(ResizeEdge::Bottom)
 8000    } else if !tiling.left && pos.x < shadow_size {
 8001        Some(ResizeEdge::Left)
 8002    } else if !tiling.right && pos.x > window_size.width - shadow_size {
 8003        Some(ResizeEdge::Right)
 8004    } else {
 8005        None
 8006    }
 8007}
 8008
 8009fn join_pane_into_active(
 8010    active_pane: &Entity<Pane>,
 8011    pane: &Entity<Pane>,
 8012    window: &mut Window,
 8013    cx: &mut App,
 8014) {
 8015    if pane == active_pane {
 8016    } else if pane.read(cx).items_len() == 0 {
 8017        pane.update(cx, |_, cx| {
 8018            cx.emit(pane::Event::Remove {
 8019                focus_on_pane: None,
 8020            });
 8021        })
 8022    } else {
 8023        move_all_items(pane, active_pane, window, cx);
 8024    }
 8025}
 8026
 8027fn move_all_items(
 8028    from_pane: &Entity<Pane>,
 8029    to_pane: &Entity<Pane>,
 8030    window: &mut Window,
 8031    cx: &mut App,
 8032) {
 8033    let destination_is_different = from_pane != to_pane;
 8034    let mut moved_items = 0;
 8035    for (item_ix, item_handle) in from_pane
 8036        .read(cx)
 8037        .items()
 8038        .enumerate()
 8039        .map(|(ix, item)| (ix, item.clone()))
 8040        .collect::<Vec<_>>()
 8041    {
 8042        let ix = item_ix - moved_items;
 8043        if destination_is_different {
 8044            // Close item from previous pane
 8045            from_pane.update(cx, |source, cx| {
 8046                source.remove_item_and_focus_on_pane(ix, false, to_pane.clone(), window, cx);
 8047            });
 8048            moved_items += 1;
 8049        }
 8050
 8051        // This automatically removes duplicate items in the pane
 8052        to_pane.update(cx, |destination, cx| {
 8053            destination.add_item(item_handle, true, true, None, window, cx);
 8054            window.focus(&destination.focus_handle(cx))
 8055        });
 8056    }
 8057}
 8058
 8059pub fn move_item(
 8060    source: &Entity<Pane>,
 8061    destination: &Entity<Pane>,
 8062    item_id_to_move: EntityId,
 8063    destination_index: usize,
 8064    activate: bool,
 8065    window: &mut Window,
 8066    cx: &mut App,
 8067) {
 8068    let Some((item_ix, item_handle)) = source
 8069        .read(cx)
 8070        .items()
 8071        .enumerate()
 8072        .find(|(_, item_handle)| item_handle.item_id() == item_id_to_move)
 8073        .map(|(ix, item)| (ix, item.clone()))
 8074    else {
 8075        // Tab was closed during drag
 8076        return;
 8077    };
 8078
 8079    if source != destination {
 8080        // Close item from previous pane
 8081        source.update(cx, |source, cx| {
 8082            source.remove_item_and_focus_on_pane(item_ix, false, destination.clone(), window, cx);
 8083        });
 8084    }
 8085
 8086    // This automatically removes duplicate items in the pane
 8087    destination.update(cx, |destination, cx| {
 8088        destination.add_item_inner(
 8089            item_handle,
 8090            activate,
 8091            activate,
 8092            activate,
 8093            Some(destination_index),
 8094            window,
 8095            cx,
 8096        );
 8097        if activate {
 8098            window.focus(&destination.focus_handle(cx))
 8099        }
 8100    });
 8101}
 8102
 8103pub fn move_active_item(
 8104    source: &Entity<Pane>,
 8105    destination: &Entity<Pane>,
 8106    focus_destination: bool,
 8107    close_if_empty: bool,
 8108    window: &mut Window,
 8109    cx: &mut App,
 8110) {
 8111    if source == destination {
 8112        return;
 8113    }
 8114    let Some(active_item) = source.read(cx).active_item() else {
 8115        return;
 8116    };
 8117    source.update(cx, |source_pane, cx| {
 8118        let item_id = active_item.item_id();
 8119        source_pane.remove_item(item_id, false, close_if_empty, window, cx);
 8120        destination.update(cx, |target_pane, cx| {
 8121            target_pane.add_item(
 8122                active_item,
 8123                focus_destination,
 8124                focus_destination,
 8125                Some(target_pane.items_len()),
 8126                window,
 8127                cx,
 8128            );
 8129        });
 8130    });
 8131}
 8132
 8133pub fn clone_active_item(
 8134    workspace_id: Option<WorkspaceId>,
 8135    source: &Entity<Pane>,
 8136    destination: &Entity<Pane>,
 8137    focus_destination: bool,
 8138    window: &mut Window,
 8139    cx: &mut App,
 8140) {
 8141    if source == destination {
 8142        return;
 8143    }
 8144    let Some(active_item) = source.read(cx).active_item() else {
 8145        return;
 8146    };
 8147    destination.update(cx, |target_pane, cx| {
 8148        let Some(clone) = active_item.clone_on_split(workspace_id, window, cx) else {
 8149            return;
 8150        };
 8151        target_pane.add_item(
 8152            clone,
 8153            focus_destination,
 8154            focus_destination,
 8155            Some(target_pane.items_len()),
 8156            window,
 8157            cx,
 8158        );
 8159    });
 8160}
 8161
 8162#[derive(Debug)]
 8163pub struct WorkspacePosition {
 8164    pub window_bounds: Option<WindowBounds>,
 8165    pub display: Option<Uuid>,
 8166    pub centered_layout: bool,
 8167}
 8168
 8169pub fn remote_workspace_position_from_db(
 8170    connection_options: RemoteConnectionOptions,
 8171    paths_to_open: &[PathBuf],
 8172    cx: &App,
 8173) -> Task<Result<WorkspacePosition>> {
 8174    let paths = paths_to_open.to_vec();
 8175
 8176    cx.background_spawn(async move {
 8177        let remote_connection_id = persistence::DB
 8178            .get_or_create_remote_connection(connection_options)
 8179            .await
 8180            .context("fetching serialized ssh project")?;
 8181        let serialized_workspace =
 8182            persistence::DB.remote_workspace_for_roots(&paths, remote_connection_id);
 8183
 8184        let (window_bounds, display) = if let Some(bounds) = window_bounds_env_override() {
 8185            (Some(WindowBounds::Windowed(bounds)), None)
 8186        } else {
 8187            let restorable_bounds = serialized_workspace
 8188                .as_ref()
 8189                .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 8190                .or_else(|| {
 8191                    let (display, window_bounds) = DB.last_window().log_err()?;
 8192                    Some((display?, window_bounds?))
 8193                });
 8194
 8195            if let Some((serialized_display, serialized_status)) = restorable_bounds {
 8196                (Some(serialized_status.0), Some(serialized_display))
 8197            } else {
 8198                (None, None)
 8199            }
 8200        };
 8201
 8202        let centered_layout = serialized_workspace
 8203            .as_ref()
 8204            .map(|w| w.centered_layout)
 8205            .unwrap_or(false);
 8206
 8207        Ok(WorkspacePosition {
 8208            window_bounds,
 8209            display,
 8210            centered_layout,
 8211        })
 8212    })
 8213}
 8214
 8215pub fn with_active_or_new_workspace(
 8216    cx: &mut App,
 8217    f: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send + 'static,
 8218) {
 8219    match cx.active_window().and_then(|w| w.downcast::<Workspace>()) {
 8220        Some(workspace) => {
 8221            cx.defer(move |cx| {
 8222                workspace
 8223                    .update(cx, |workspace, window, cx| f(workspace, window, cx))
 8224                    .log_err();
 8225            });
 8226        }
 8227        None => {
 8228            let app_state = AppState::global(cx);
 8229            if let Some(app_state) = app_state.upgrade() {
 8230                open_new(
 8231                    OpenOptions::default(),
 8232                    app_state,
 8233                    cx,
 8234                    move |workspace, window, cx| f(workspace, window, cx),
 8235                )
 8236                .detach_and_log_err(cx);
 8237            }
 8238        }
 8239    }
 8240}
 8241
 8242#[cfg(test)]
 8243mod tests {
 8244    use std::{cell::RefCell, rc::Rc};
 8245
 8246    use super::*;
 8247    use crate::{
 8248        dock::{PanelEvent, test::TestPanel},
 8249        item::{
 8250            ItemBufferKind, ItemEvent,
 8251            test::{TestItem, TestProjectItem},
 8252        },
 8253    };
 8254    use fs::FakeFs;
 8255    use gpui::{
 8256        DismissEvent, Empty, EventEmitter, FocusHandle, Focusable, Render, TestAppContext,
 8257        UpdateGlobal, VisualTestContext, px,
 8258    };
 8259    use project::{Project, ProjectEntryId};
 8260    use serde_json::json;
 8261    use settings::SettingsStore;
 8262    use util::rel_path::rel_path;
 8263
 8264    #[gpui::test]
 8265    async fn test_tab_disambiguation(cx: &mut TestAppContext) {
 8266        init_test(cx);
 8267
 8268        let fs = FakeFs::new(cx.executor());
 8269        let project = Project::test(fs, [], cx).await;
 8270        let (workspace, cx) =
 8271            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8272
 8273        // Adding an item with no ambiguity renders the tab without detail.
 8274        let item1 = cx.new(|cx| {
 8275            let mut item = TestItem::new(cx);
 8276            item.tab_descriptions = Some(vec!["c", "b1/c", "a/b1/c"]);
 8277            item
 8278        });
 8279        workspace.update_in(cx, |workspace, window, cx| {
 8280            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8281        });
 8282        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(0)));
 8283
 8284        // Adding an item that creates ambiguity increases the level of detail on
 8285        // both tabs.
 8286        let item2 = cx.new_window_entity(|_window, cx| {
 8287            let mut item = TestItem::new(cx);
 8288            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8289            item
 8290        });
 8291        workspace.update_in(cx, |workspace, window, cx| {
 8292            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8293        });
 8294        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8295        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8296
 8297        // Adding an item that creates ambiguity increases the level of detail only
 8298        // on the ambiguous tabs. In this case, the ambiguity can't be resolved so
 8299        // we stop at the highest detail available.
 8300        let item3 = cx.new(|cx| {
 8301            let mut item = TestItem::new(cx);
 8302            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8303            item
 8304        });
 8305        workspace.update_in(cx, |workspace, window, cx| {
 8306            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8307        });
 8308        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8309        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8310        item3.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8311    }
 8312
 8313    #[gpui::test]
 8314    async fn test_tracking_active_path(cx: &mut TestAppContext) {
 8315        init_test(cx);
 8316
 8317        let fs = FakeFs::new(cx.executor());
 8318        fs.insert_tree(
 8319            "/root1",
 8320            json!({
 8321                "one.txt": "",
 8322                "two.txt": "",
 8323            }),
 8324        )
 8325        .await;
 8326        fs.insert_tree(
 8327            "/root2",
 8328            json!({
 8329                "three.txt": "",
 8330            }),
 8331        )
 8332        .await;
 8333
 8334        let project = Project::test(fs, ["root1".as_ref()], cx).await;
 8335        let (workspace, cx) =
 8336            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8337        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8338        let worktree_id = project.update(cx, |project, cx| {
 8339            project.worktrees(cx).next().unwrap().read(cx).id()
 8340        });
 8341
 8342        let item1 = cx.new(|cx| {
 8343            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
 8344        });
 8345        let item2 = cx.new(|cx| {
 8346            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "two.txt", cx)])
 8347        });
 8348
 8349        // Add an item to an empty pane
 8350        workspace.update_in(cx, |workspace, window, cx| {
 8351            workspace.add_item_to_active_pane(Box::new(item1), None, true, window, cx)
 8352        });
 8353        project.update(cx, |project, cx| {
 8354            assert_eq!(
 8355                project.active_entry(),
 8356                project
 8357                    .entry_for_path(&(worktree_id, rel_path("one.txt")).into(), cx)
 8358                    .map(|e| e.id)
 8359            );
 8360        });
 8361        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8362
 8363        // Add a second item to a non-empty pane
 8364        workspace.update_in(cx, |workspace, window, cx| {
 8365            workspace.add_item_to_active_pane(Box::new(item2), None, true, window, cx)
 8366        });
 8367        assert_eq!(cx.window_title().as_deref(), Some("root1 — two.txt"));
 8368        project.update(cx, |project, cx| {
 8369            assert_eq!(
 8370                project.active_entry(),
 8371                project
 8372                    .entry_for_path(&(worktree_id, rel_path("two.txt")).into(), cx)
 8373                    .map(|e| e.id)
 8374            );
 8375        });
 8376
 8377        // Close the active item
 8378        pane.update_in(cx, |pane, window, cx| {
 8379            pane.close_active_item(&Default::default(), window, cx)
 8380        })
 8381        .await
 8382        .unwrap();
 8383        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8384        project.update(cx, |project, cx| {
 8385            assert_eq!(
 8386                project.active_entry(),
 8387                project
 8388                    .entry_for_path(&(worktree_id, rel_path("one.txt")).into(), cx)
 8389                    .map(|e| e.id)
 8390            );
 8391        });
 8392
 8393        // Add a project folder
 8394        project
 8395            .update(cx, |project, cx| {
 8396                project.find_or_create_worktree("root2", true, cx)
 8397            })
 8398            .await
 8399            .unwrap();
 8400        assert_eq!(cx.window_title().as_deref(), Some("root1, root2 — one.txt"));
 8401
 8402        // Remove a project folder
 8403        project.update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
 8404        assert_eq!(cx.window_title().as_deref(), Some("root2 — one.txt"));
 8405    }
 8406
 8407    #[gpui::test]
 8408    async fn test_close_window(cx: &mut TestAppContext) {
 8409        init_test(cx);
 8410
 8411        let fs = FakeFs::new(cx.executor());
 8412        fs.insert_tree("/root", json!({ "one": "" })).await;
 8413
 8414        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8415        let (workspace, cx) =
 8416            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8417
 8418        // When there are no dirty items, there's nothing to do.
 8419        let item1 = cx.new(TestItem::new);
 8420        workspace.update_in(cx, |w, window, cx| {
 8421            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx)
 8422        });
 8423        let task = workspace.update_in(cx, |w, window, cx| {
 8424            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8425        });
 8426        assert!(task.await.unwrap());
 8427
 8428        // When there are dirty untitled items, prompt to save each one. If the user
 8429        // cancels any prompt, then abort.
 8430        let item2 = cx.new(|cx| TestItem::new(cx).with_dirty(true));
 8431        let item3 = cx.new(|cx| {
 8432            TestItem::new(cx)
 8433                .with_dirty(true)
 8434                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8435        });
 8436        workspace.update_in(cx, |w, window, cx| {
 8437            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8438            w.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8439        });
 8440        let task = workspace.update_in(cx, |w, window, cx| {
 8441            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8442        });
 8443        cx.executor().run_until_parked();
 8444        cx.simulate_prompt_answer("Cancel"); // cancel save all
 8445        cx.executor().run_until_parked();
 8446        assert!(!cx.has_pending_prompt());
 8447        assert!(!task.await.unwrap());
 8448    }
 8449
 8450    #[gpui::test]
 8451    async fn test_close_window_with_serializable_items(cx: &mut TestAppContext) {
 8452        init_test(cx);
 8453
 8454        // Register TestItem as a serializable item
 8455        cx.update(|cx| {
 8456            register_serializable_item::<TestItem>(cx);
 8457        });
 8458
 8459        let fs = FakeFs::new(cx.executor());
 8460        fs.insert_tree("/root", json!({ "one": "" })).await;
 8461
 8462        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8463        let (workspace, cx) =
 8464            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8465
 8466        // When there are dirty untitled items, but they can serialize, then there is no prompt.
 8467        let item1 = cx.new(|cx| {
 8468            TestItem::new(cx)
 8469                .with_dirty(true)
 8470                .with_serialize(|| Some(Task::ready(Ok(()))))
 8471        });
 8472        let item2 = cx.new(|cx| {
 8473            TestItem::new(cx)
 8474                .with_dirty(true)
 8475                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8476                .with_serialize(|| Some(Task::ready(Ok(()))))
 8477        });
 8478        workspace.update_in(cx, |w, window, cx| {
 8479            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8480            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8481        });
 8482        let task = workspace.update_in(cx, |w, window, cx| {
 8483            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8484        });
 8485        assert!(task.await.unwrap());
 8486    }
 8487
 8488    #[gpui::test]
 8489    async fn test_close_pane_items(cx: &mut TestAppContext) {
 8490        init_test(cx);
 8491
 8492        let fs = FakeFs::new(cx.executor());
 8493
 8494        let project = Project::test(fs, None, cx).await;
 8495        let (workspace, cx) =
 8496            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8497
 8498        let item1 = cx.new(|cx| {
 8499            TestItem::new(cx)
 8500                .with_dirty(true)
 8501                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 8502        });
 8503        let item2 = cx.new(|cx| {
 8504            TestItem::new(cx)
 8505                .with_dirty(true)
 8506                .with_conflict(true)
 8507                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 8508        });
 8509        let item3 = cx.new(|cx| {
 8510            TestItem::new(cx)
 8511                .with_dirty(true)
 8512                .with_conflict(true)
 8513                .with_project_items(&[dirty_project_item(3, "3.txt", cx)])
 8514        });
 8515        let item4 = cx.new(|cx| {
 8516            TestItem::new(cx).with_dirty(true).with_project_items(&[{
 8517                let project_item = TestProjectItem::new_untitled(cx);
 8518                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8519                project_item
 8520            }])
 8521        });
 8522        let pane = workspace.update_in(cx, |workspace, window, cx| {
 8523            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8524            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8525            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8526            workspace.add_item_to_active_pane(Box::new(item4.clone()), None, true, window, cx);
 8527            workspace.active_pane().clone()
 8528        });
 8529
 8530        let close_items = pane.update_in(cx, |pane, window, cx| {
 8531            pane.activate_item(1, true, true, window, cx);
 8532            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8533            let item1_id = item1.item_id();
 8534            let item3_id = item3.item_id();
 8535            let item4_id = item4.item_id();
 8536            pane.close_items(window, cx, SaveIntent::Close, move |id| {
 8537                [item1_id, item3_id, item4_id].contains(&id)
 8538            })
 8539        });
 8540        cx.executor().run_until_parked();
 8541
 8542        assert!(cx.has_pending_prompt());
 8543        cx.simulate_prompt_answer("Save all");
 8544
 8545        cx.executor().run_until_parked();
 8546
 8547        // Item 1 is saved. There's a prompt to save item 3.
 8548        pane.update(cx, |pane, cx| {
 8549            assert_eq!(item1.read(cx).save_count, 1);
 8550            assert_eq!(item1.read(cx).save_as_count, 0);
 8551            assert_eq!(item1.read(cx).reload_count, 0);
 8552            assert_eq!(pane.items_len(), 3);
 8553            assert_eq!(pane.active_item().unwrap().item_id(), item3.item_id());
 8554        });
 8555        assert!(cx.has_pending_prompt());
 8556
 8557        // Cancel saving item 3.
 8558        cx.simulate_prompt_answer("Discard");
 8559        cx.executor().run_until_parked();
 8560
 8561        // Item 3 is reloaded. There's a prompt to save item 4.
 8562        pane.update(cx, |pane, cx| {
 8563            assert_eq!(item3.read(cx).save_count, 0);
 8564            assert_eq!(item3.read(cx).save_as_count, 0);
 8565            assert_eq!(item3.read(cx).reload_count, 1);
 8566            assert_eq!(pane.items_len(), 2);
 8567            assert_eq!(pane.active_item().unwrap().item_id(), item4.item_id());
 8568        });
 8569
 8570        // There's a prompt for a path for item 4.
 8571        cx.simulate_new_path_selection(|_| Some(Default::default()));
 8572        close_items.await.unwrap();
 8573
 8574        // The requested items are closed.
 8575        pane.update(cx, |pane, cx| {
 8576            assert_eq!(item4.read(cx).save_count, 0);
 8577            assert_eq!(item4.read(cx).save_as_count, 1);
 8578            assert_eq!(item4.read(cx).reload_count, 0);
 8579            assert_eq!(pane.items_len(), 1);
 8580            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8581        });
 8582    }
 8583
 8584    #[gpui::test]
 8585    async fn test_prompting_to_save_only_on_last_item_for_entry(cx: &mut TestAppContext) {
 8586        init_test(cx);
 8587
 8588        let fs = FakeFs::new(cx.executor());
 8589        let project = Project::test(fs, [], cx).await;
 8590        let (workspace, cx) =
 8591            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8592
 8593        // Create several workspace items with single project entries, and two
 8594        // workspace items with multiple project entries.
 8595        let single_entry_items = (0..=4)
 8596            .map(|project_entry_id| {
 8597                cx.new(|cx| {
 8598                    TestItem::new(cx)
 8599                        .with_dirty(true)
 8600                        .with_project_items(&[dirty_project_item(
 8601                            project_entry_id,
 8602                            &format!("{project_entry_id}.txt"),
 8603                            cx,
 8604                        )])
 8605                })
 8606            })
 8607            .collect::<Vec<_>>();
 8608        let item_2_3 = cx.new(|cx| {
 8609            TestItem::new(cx)
 8610                .with_dirty(true)
 8611                .with_buffer_kind(ItemBufferKind::Multibuffer)
 8612                .with_project_items(&[
 8613                    single_entry_items[2].read(cx).project_items[0].clone(),
 8614                    single_entry_items[3].read(cx).project_items[0].clone(),
 8615                ])
 8616        });
 8617        let item_3_4 = cx.new(|cx| {
 8618            TestItem::new(cx)
 8619                .with_dirty(true)
 8620                .with_buffer_kind(ItemBufferKind::Multibuffer)
 8621                .with_project_items(&[
 8622                    single_entry_items[3].read(cx).project_items[0].clone(),
 8623                    single_entry_items[4].read(cx).project_items[0].clone(),
 8624                ])
 8625        });
 8626
 8627        // Create two panes that contain the following project entries:
 8628        //   left pane:
 8629        //     multi-entry items:   (2, 3)
 8630        //     single-entry items:  0, 2, 3, 4
 8631        //   right pane:
 8632        //     single-entry items:  4, 1
 8633        //     multi-entry items:   (3, 4)
 8634        let (left_pane, right_pane) = workspace.update_in(cx, |workspace, window, cx| {
 8635            let left_pane = workspace.active_pane().clone();
 8636            workspace.add_item_to_active_pane(Box::new(item_2_3.clone()), None, true, window, cx);
 8637            workspace.add_item_to_active_pane(
 8638                single_entry_items[0].boxed_clone(),
 8639                None,
 8640                true,
 8641                window,
 8642                cx,
 8643            );
 8644            workspace.add_item_to_active_pane(
 8645                single_entry_items[2].boxed_clone(),
 8646                None,
 8647                true,
 8648                window,
 8649                cx,
 8650            );
 8651            workspace.add_item_to_active_pane(
 8652                single_entry_items[3].boxed_clone(),
 8653                None,
 8654                true,
 8655                window,
 8656                cx,
 8657            );
 8658            workspace.add_item_to_active_pane(
 8659                single_entry_items[4].boxed_clone(),
 8660                None,
 8661                true,
 8662                window,
 8663                cx,
 8664            );
 8665
 8666            let right_pane = workspace
 8667                .split_and_clone(left_pane.clone(), SplitDirection::Right, window, cx)
 8668                .unwrap();
 8669
 8670            right_pane.update(cx, |pane, cx| {
 8671                pane.add_item(
 8672                    single_entry_items[1].boxed_clone(),
 8673                    true,
 8674                    true,
 8675                    None,
 8676                    window,
 8677                    cx,
 8678                );
 8679                pane.add_item(Box::new(item_3_4.clone()), true, true, None, window, cx);
 8680            });
 8681
 8682            (left_pane, right_pane)
 8683        });
 8684
 8685        cx.focus(&right_pane);
 8686
 8687        let mut close = right_pane.update_in(cx, |pane, window, cx| {
 8688            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8689                .unwrap()
 8690        });
 8691        cx.executor().run_until_parked();
 8692
 8693        let msg = cx.pending_prompt().unwrap().0;
 8694        assert!(msg.contains("1.txt"));
 8695        assert!(!msg.contains("2.txt"));
 8696        assert!(!msg.contains("3.txt"));
 8697        assert!(!msg.contains("4.txt"));
 8698
 8699        cx.simulate_prompt_answer("Cancel");
 8700        close.await;
 8701
 8702        left_pane
 8703            .update_in(cx, |left_pane, window, cx| {
 8704                left_pane.close_item_by_id(
 8705                    single_entry_items[3].entity_id(),
 8706                    SaveIntent::Skip,
 8707                    window,
 8708                    cx,
 8709                )
 8710            })
 8711            .await
 8712            .unwrap();
 8713
 8714        close = right_pane.update_in(cx, |pane, window, cx| {
 8715            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8716                .unwrap()
 8717        });
 8718        cx.executor().run_until_parked();
 8719
 8720        let details = cx.pending_prompt().unwrap().1;
 8721        assert!(details.contains("1.txt"));
 8722        assert!(!details.contains("2.txt"));
 8723        assert!(details.contains("3.txt"));
 8724        // ideally this assertion could be made, but today we can only
 8725        // save whole items not project items, so the orphaned item 3 causes
 8726        // 4 to be saved too.
 8727        // assert!(!details.contains("4.txt"));
 8728
 8729        cx.simulate_prompt_answer("Save all");
 8730
 8731        cx.executor().run_until_parked();
 8732        close.await;
 8733        right_pane.read_with(cx, |pane, _| {
 8734            assert_eq!(pane.items_len(), 0);
 8735        });
 8736    }
 8737
 8738    #[gpui::test]
 8739    async fn test_autosave(cx: &mut gpui::TestAppContext) {
 8740        init_test(cx);
 8741
 8742        let fs = FakeFs::new(cx.executor());
 8743        let project = Project::test(fs, [], cx).await;
 8744        let (workspace, cx) =
 8745            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8746        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8747
 8748        let item = cx.new(|cx| {
 8749            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8750        });
 8751        let item_id = item.entity_id();
 8752        workspace.update_in(cx, |workspace, window, cx| {
 8753            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8754        });
 8755
 8756        // Autosave on window change.
 8757        item.update(cx, |item, cx| {
 8758            SettingsStore::update_global(cx, |settings, cx| {
 8759                settings.update_user_settings(cx, |settings| {
 8760                    settings.workspace.autosave = Some(AutosaveSetting::OnWindowChange);
 8761                })
 8762            });
 8763            item.is_dirty = true;
 8764        });
 8765
 8766        // Deactivating the window saves the file.
 8767        cx.deactivate_window();
 8768        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8769
 8770        // Re-activating the window doesn't save the file.
 8771        cx.update(|window, _| window.activate_window());
 8772        cx.executor().run_until_parked();
 8773        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8774
 8775        // Autosave on focus change.
 8776        item.update_in(cx, |item, window, cx| {
 8777            cx.focus_self(window);
 8778            SettingsStore::update_global(cx, |settings, cx| {
 8779                settings.update_user_settings(cx, |settings| {
 8780                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
 8781                })
 8782            });
 8783            item.is_dirty = true;
 8784        });
 8785        // Blurring the item saves the file.
 8786        item.update_in(cx, |_, window, _| window.blur());
 8787        cx.executor().run_until_parked();
 8788        item.read_with(cx, |item, _| assert_eq!(item.save_count, 2));
 8789
 8790        // Deactivating the window still saves the file.
 8791        item.update_in(cx, |item, window, cx| {
 8792            cx.focus_self(window);
 8793            item.is_dirty = true;
 8794        });
 8795        cx.deactivate_window();
 8796        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
 8797
 8798        // Autosave after delay.
 8799        item.update(cx, |item, cx| {
 8800            SettingsStore::update_global(cx, |settings, cx| {
 8801                settings.update_user_settings(cx, |settings| {
 8802                    settings.workspace.autosave =
 8803                        Some(AutosaveSetting::AfterDelay { milliseconds: 500 });
 8804                })
 8805            });
 8806            item.is_dirty = true;
 8807            cx.emit(ItemEvent::Edit);
 8808        });
 8809
 8810        // Delay hasn't fully expired, so the file is still dirty and unsaved.
 8811        cx.executor().advance_clock(Duration::from_millis(250));
 8812        item.read_with(cx, |item, _| assert_eq!(item.save_count, 3));
 8813
 8814        // After delay expires, the file is saved.
 8815        cx.executor().advance_clock(Duration::from_millis(250));
 8816        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
 8817
 8818        // Autosave after delay, should save earlier than delay if tab is closed
 8819        item.update(cx, |item, cx| {
 8820            item.is_dirty = true;
 8821            cx.emit(ItemEvent::Edit);
 8822        });
 8823        cx.executor().advance_clock(Duration::from_millis(250));
 8824        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
 8825
 8826        // // Ensure auto save with delay saves the item on close, even if the timer hasn't yet run out.
 8827        pane.update_in(cx, |pane, window, cx| {
 8828            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8829        })
 8830        .await
 8831        .unwrap();
 8832        assert!(!cx.has_pending_prompt());
 8833        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8834
 8835        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
 8836        workspace.update_in(cx, |workspace, window, cx| {
 8837            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8838        });
 8839        item.update_in(cx, |item, _window, cx| {
 8840            item.is_dirty = true;
 8841            for project_item in &mut item.project_items {
 8842                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8843            }
 8844        });
 8845        cx.run_until_parked();
 8846        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8847
 8848        // Autosave on focus change, ensuring closing the tab counts as such.
 8849        item.update(cx, |item, cx| {
 8850            SettingsStore::update_global(cx, |settings, cx| {
 8851                settings.update_user_settings(cx, |settings| {
 8852                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
 8853                })
 8854            });
 8855            item.is_dirty = true;
 8856            for project_item in &mut item.project_items {
 8857                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8858            }
 8859        });
 8860
 8861        pane.update_in(cx, |pane, window, cx| {
 8862            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8863        })
 8864        .await
 8865        .unwrap();
 8866        assert!(!cx.has_pending_prompt());
 8867        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
 8868
 8869        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
 8870        workspace.update_in(cx, |workspace, window, cx| {
 8871            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8872        });
 8873        item.update_in(cx, |item, window, cx| {
 8874            item.project_items[0].update(cx, |item, _| {
 8875                item.entry_id = None;
 8876            });
 8877            item.is_dirty = true;
 8878            window.blur();
 8879        });
 8880        cx.run_until_parked();
 8881        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
 8882
 8883        // Ensure autosave is prevented for deleted files also when closing the buffer.
 8884        let _close_items = pane.update_in(cx, |pane, window, cx| {
 8885            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8886        });
 8887        cx.run_until_parked();
 8888        assert!(cx.has_pending_prompt());
 8889        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
 8890    }
 8891
 8892    #[gpui::test]
 8893    async fn test_pane_navigation(cx: &mut gpui::TestAppContext) {
 8894        init_test(cx);
 8895
 8896        let fs = FakeFs::new(cx.executor());
 8897
 8898        let project = Project::test(fs, [], cx).await;
 8899        let (workspace, cx) =
 8900            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8901
 8902        let item = cx.new(|cx| {
 8903            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8904        });
 8905        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8906        let toolbar = pane.read_with(cx, |pane, _| pane.toolbar().clone());
 8907        let toolbar_notify_count = Rc::new(RefCell::new(0));
 8908
 8909        workspace.update_in(cx, |workspace, window, cx| {
 8910            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8911            let toolbar_notification_count = toolbar_notify_count.clone();
 8912            cx.observe_in(&toolbar, window, move |_, _, _, _| {
 8913                *toolbar_notification_count.borrow_mut() += 1
 8914            })
 8915            .detach();
 8916        });
 8917
 8918        pane.read_with(cx, |pane, _| {
 8919            assert!(!pane.can_navigate_backward());
 8920            assert!(!pane.can_navigate_forward());
 8921        });
 8922
 8923        item.update_in(cx, |item, _, cx| {
 8924            item.set_state("one".to_string(), cx);
 8925        });
 8926
 8927        // Toolbar must be notified to re-render the navigation buttons
 8928        assert_eq!(*toolbar_notify_count.borrow(), 1);
 8929
 8930        pane.read_with(cx, |pane, _| {
 8931            assert!(pane.can_navigate_backward());
 8932            assert!(!pane.can_navigate_forward());
 8933        });
 8934
 8935        workspace
 8936            .update_in(cx, |workspace, window, cx| {
 8937                workspace.go_back(pane.downgrade(), window, cx)
 8938            })
 8939            .await
 8940            .unwrap();
 8941
 8942        assert_eq!(*toolbar_notify_count.borrow(), 2);
 8943        pane.read_with(cx, |pane, _| {
 8944            assert!(!pane.can_navigate_backward());
 8945            assert!(pane.can_navigate_forward());
 8946        });
 8947    }
 8948
 8949    #[gpui::test]
 8950    async fn test_toggle_docks_and_panels(cx: &mut gpui::TestAppContext) {
 8951        init_test(cx);
 8952        let fs = FakeFs::new(cx.executor());
 8953
 8954        let project = Project::test(fs, [], cx).await;
 8955        let (workspace, cx) =
 8956            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8957
 8958        let panel = workspace.update_in(cx, |workspace, window, cx| {
 8959            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 8960            workspace.add_panel(panel.clone(), window, cx);
 8961
 8962            workspace
 8963                .right_dock()
 8964                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
 8965
 8966            panel
 8967        });
 8968
 8969        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8970        pane.update_in(cx, |pane, window, cx| {
 8971            let item = cx.new(TestItem::new);
 8972            pane.add_item(Box::new(item), true, true, None, window, cx);
 8973        });
 8974
 8975        // Transfer focus from center to panel
 8976        workspace.update_in(cx, |workspace, window, cx| {
 8977            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8978        });
 8979
 8980        workspace.update_in(cx, |workspace, window, cx| {
 8981            assert!(workspace.right_dock().read(cx).is_open());
 8982            assert!(!panel.is_zoomed(window, cx));
 8983            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8984        });
 8985
 8986        // Transfer focus from panel to center
 8987        workspace.update_in(cx, |workspace, window, cx| {
 8988            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8989        });
 8990
 8991        workspace.update_in(cx, |workspace, window, cx| {
 8992            assert!(workspace.right_dock().read(cx).is_open());
 8993            assert!(!panel.is_zoomed(window, cx));
 8994            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8995        });
 8996
 8997        // Close the dock
 8998        workspace.update_in(cx, |workspace, window, cx| {
 8999            workspace.toggle_dock(DockPosition::Right, window, cx);
 9000        });
 9001
 9002        workspace.update_in(cx, |workspace, window, cx| {
 9003            assert!(!workspace.right_dock().read(cx).is_open());
 9004            assert!(!panel.is_zoomed(window, cx));
 9005            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9006        });
 9007
 9008        // Open the dock
 9009        workspace.update_in(cx, |workspace, window, cx| {
 9010            workspace.toggle_dock(DockPosition::Right, window, cx);
 9011        });
 9012
 9013        workspace.update_in(cx, |workspace, window, cx| {
 9014            assert!(workspace.right_dock().read(cx).is_open());
 9015            assert!(!panel.is_zoomed(window, cx));
 9016            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9017        });
 9018
 9019        // Focus and zoom panel
 9020        panel.update_in(cx, |panel, window, cx| {
 9021            cx.focus_self(window);
 9022            panel.set_zoomed(true, window, cx)
 9023        });
 9024
 9025        workspace.update_in(cx, |workspace, window, cx| {
 9026            assert!(workspace.right_dock().read(cx).is_open());
 9027            assert!(panel.is_zoomed(window, cx));
 9028            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9029        });
 9030
 9031        // Transfer focus to the center closes the dock
 9032        workspace.update_in(cx, |workspace, window, cx| {
 9033            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 9034        });
 9035
 9036        workspace.update_in(cx, |workspace, window, cx| {
 9037            assert!(!workspace.right_dock().read(cx).is_open());
 9038            assert!(panel.is_zoomed(window, cx));
 9039            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9040        });
 9041
 9042        // Transferring focus back to the panel keeps it zoomed
 9043        workspace.update_in(cx, |workspace, window, cx| {
 9044            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 9045        });
 9046
 9047        workspace.update_in(cx, |workspace, window, cx| {
 9048            assert!(workspace.right_dock().read(cx).is_open());
 9049            assert!(panel.is_zoomed(window, cx));
 9050            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9051        });
 9052
 9053        // Close the dock while it is zoomed
 9054        workspace.update_in(cx, |workspace, window, cx| {
 9055            workspace.toggle_dock(DockPosition::Right, window, cx)
 9056        });
 9057
 9058        workspace.update_in(cx, |workspace, window, cx| {
 9059            assert!(!workspace.right_dock().read(cx).is_open());
 9060            assert!(panel.is_zoomed(window, cx));
 9061            assert!(workspace.zoomed.is_none());
 9062            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9063        });
 9064
 9065        // Opening the dock, when it's zoomed, retains focus
 9066        workspace.update_in(cx, |workspace, window, cx| {
 9067            workspace.toggle_dock(DockPosition::Right, window, cx)
 9068        });
 9069
 9070        workspace.update_in(cx, |workspace, window, cx| {
 9071            assert!(workspace.right_dock().read(cx).is_open());
 9072            assert!(panel.is_zoomed(window, cx));
 9073            assert!(workspace.zoomed.is_some());
 9074            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9075        });
 9076
 9077        // Unzoom and close the panel, zoom the active pane.
 9078        panel.update_in(cx, |panel, window, cx| panel.set_zoomed(false, window, cx));
 9079        workspace.update_in(cx, |workspace, window, cx| {
 9080            workspace.toggle_dock(DockPosition::Right, window, cx)
 9081        });
 9082        pane.update_in(cx, |pane, window, cx| {
 9083            pane.toggle_zoom(&Default::default(), window, cx)
 9084        });
 9085
 9086        // Opening a dock unzooms the pane.
 9087        workspace.update_in(cx, |workspace, window, cx| {
 9088            workspace.toggle_dock(DockPosition::Right, window, cx)
 9089        });
 9090        workspace.update_in(cx, |workspace, window, cx| {
 9091            let pane = pane.read(cx);
 9092            assert!(!pane.is_zoomed());
 9093            assert!(!pane.focus_handle(cx).is_focused(window));
 9094            assert!(workspace.right_dock().read(cx).is_open());
 9095            assert!(workspace.zoomed.is_none());
 9096        });
 9097    }
 9098
 9099    #[gpui::test]
 9100    async fn test_join_pane_into_next(cx: &mut gpui::TestAppContext) {
 9101        init_test(cx);
 9102
 9103        let fs = FakeFs::new(cx.executor());
 9104
 9105        let project = Project::test(fs, None, cx).await;
 9106        let (workspace, cx) =
 9107            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9108
 9109        // Let's arrange the panes like this:
 9110        //
 9111        // +-----------------------+
 9112        // |         top           |
 9113        // +------+--------+-------+
 9114        // | left | center | right |
 9115        // +------+--------+-------+
 9116        // |        bottom         |
 9117        // +-----------------------+
 9118
 9119        let top_item = cx.new(|cx| {
 9120            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "top.txt", cx)])
 9121        });
 9122        let bottom_item = cx.new(|cx| {
 9123            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "bottom.txt", cx)])
 9124        });
 9125        let left_item = cx.new(|cx| {
 9126            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "left.txt", cx)])
 9127        });
 9128        let right_item = cx.new(|cx| {
 9129            TestItem::new(cx).with_project_items(&[TestProjectItem::new(4, "right.txt", cx)])
 9130        });
 9131        let center_item = cx.new(|cx| {
 9132            TestItem::new(cx).with_project_items(&[TestProjectItem::new(5, "center.txt", cx)])
 9133        });
 9134
 9135        let top_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9136            let top_pane_id = workspace.active_pane().entity_id();
 9137            workspace.add_item_to_active_pane(Box::new(top_item.clone()), None, false, window, cx);
 9138            workspace.split_pane(
 9139                workspace.active_pane().clone(),
 9140                SplitDirection::Down,
 9141                window,
 9142                cx,
 9143            );
 9144            top_pane_id
 9145        });
 9146        let bottom_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9147            let bottom_pane_id = workspace.active_pane().entity_id();
 9148            workspace.add_item_to_active_pane(
 9149                Box::new(bottom_item.clone()),
 9150                None,
 9151                false,
 9152                window,
 9153                cx,
 9154            );
 9155            workspace.split_pane(
 9156                workspace.active_pane().clone(),
 9157                SplitDirection::Up,
 9158                window,
 9159                cx,
 9160            );
 9161            bottom_pane_id
 9162        });
 9163        let left_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9164            let left_pane_id = workspace.active_pane().entity_id();
 9165            workspace.add_item_to_active_pane(Box::new(left_item.clone()), None, false, window, cx);
 9166            workspace.split_pane(
 9167                workspace.active_pane().clone(),
 9168                SplitDirection::Right,
 9169                window,
 9170                cx,
 9171            );
 9172            left_pane_id
 9173        });
 9174        let right_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9175            let right_pane_id = workspace.active_pane().entity_id();
 9176            workspace.add_item_to_active_pane(
 9177                Box::new(right_item.clone()),
 9178                None,
 9179                false,
 9180                window,
 9181                cx,
 9182            );
 9183            workspace.split_pane(
 9184                workspace.active_pane().clone(),
 9185                SplitDirection::Left,
 9186                window,
 9187                cx,
 9188            );
 9189            right_pane_id
 9190        });
 9191        let center_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9192            let center_pane_id = workspace.active_pane().entity_id();
 9193            workspace.add_item_to_active_pane(
 9194                Box::new(center_item.clone()),
 9195                None,
 9196                false,
 9197                window,
 9198                cx,
 9199            );
 9200            center_pane_id
 9201        });
 9202        cx.executor().run_until_parked();
 9203
 9204        workspace.update_in(cx, |workspace, window, cx| {
 9205            assert_eq!(center_pane_id, workspace.active_pane().entity_id());
 9206
 9207            // Join into next from center pane into right
 9208            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9209        });
 9210
 9211        workspace.update_in(cx, |workspace, window, cx| {
 9212            let active_pane = workspace.active_pane();
 9213            assert_eq!(right_pane_id, active_pane.entity_id());
 9214            assert_eq!(2, active_pane.read(cx).items_len());
 9215            let item_ids_in_pane =
 9216                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9217            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9218            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9219
 9220            // Join into next from right pane into bottom
 9221            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9222        });
 9223
 9224        workspace.update_in(cx, |workspace, window, cx| {
 9225            let active_pane = workspace.active_pane();
 9226            assert_eq!(bottom_pane_id, active_pane.entity_id());
 9227            assert_eq!(3, active_pane.read(cx).items_len());
 9228            let item_ids_in_pane =
 9229                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9230            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9231            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9232            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9233
 9234            // Join into next from bottom pane into left
 9235            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9236        });
 9237
 9238        workspace.update_in(cx, |workspace, window, cx| {
 9239            let active_pane = workspace.active_pane();
 9240            assert_eq!(left_pane_id, active_pane.entity_id());
 9241            assert_eq!(4, active_pane.read(cx).items_len());
 9242            let item_ids_in_pane =
 9243                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9244            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9245            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9246            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9247            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9248
 9249            // Join into next from left pane into top
 9250            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9251        });
 9252
 9253        workspace.update_in(cx, |workspace, window, cx| {
 9254            let active_pane = workspace.active_pane();
 9255            assert_eq!(top_pane_id, active_pane.entity_id());
 9256            assert_eq!(5, active_pane.read(cx).items_len());
 9257            let item_ids_in_pane =
 9258                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9259            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9260            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9261            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9262            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9263            assert!(item_ids_in_pane.contains(&top_item.item_id()));
 9264
 9265            // Single pane left: no-op
 9266            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx)
 9267        });
 9268
 9269        workspace.update(cx, |workspace, _cx| {
 9270            let active_pane = workspace.active_pane();
 9271            assert_eq!(top_pane_id, active_pane.entity_id());
 9272        });
 9273    }
 9274
 9275    fn add_an_item_to_active_pane(
 9276        cx: &mut VisualTestContext,
 9277        workspace: &Entity<Workspace>,
 9278        item_id: u64,
 9279    ) -> Entity<TestItem> {
 9280        let item = cx.new(|cx| {
 9281            TestItem::new(cx).with_project_items(&[TestProjectItem::new(
 9282                item_id,
 9283                "item{item_id}.txt",
 9284                cx,
 9285            )])
 9286        });
 9287        workspace.update_in(cx, |workspace, window, cx| {
 9288            workspace.add_item_to_active_pane(Box::new(item.clone()), None, false, window, cx);
 9289        });
 9290        item
 9291    }
 9292
 9293    fn split_pane(cx: &mut VisualTestContext, workspace: &Entity<Workspace>) -> Entity<Pane> {
 9294        workspace.update_in(cx, |workspace, window, cx| {
 9295            workspace.split_pane(
 9296                workspace.active_pane().clone(),
 9297                SplitDirection::Right,
 9298                window,
 9299                cx,
 9300            )
 9301        })
 9302    }
 9303
 9304    #[gpui::test]
 9305    async fn test_join_all_panes(cx: &mut gpui::TestAppContext) {
 9306        init_test(cx);
 9307        let fs = FakeFs::new(cx.executor());
 9308        let project = Project::test(fs, None, cx).await;
 9309        let (workspace, cx) =
 9310            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9311
 9312        add_an_item_to_active_pane(cx, &workspace, 1);
 9313        split_pane(cx, &workspace);
 9314        add_an_item_to_active_pane(cx, &workspace, 2);
 9315        split_pane(cx, &workspace); // empty pane
 9316        split_pane(cx, &workspace);
 9317        let last_item = add_an_item_to_active_pane(cx, &workspace, 3);
 9318
 9319        cx.executor().run_until_parked();
 9320
 9321        workspace.update(cx, |workspace, cx| {
 9322            let num_panes = workspace.panes().len();
 9323            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9324            let active_item = workspace
 9325                .active_pane()
 9326                .read(cx)
 9327                .active_item()
 9328                .expect("item is in focus");
 9329
 9330            assert_eq!(num_panes, 4);
 9331            assert_eq!(num_items_in_current_pane, 1);
 9332            assert_eq!(active_item.item_id(), last_item.item_id());
 9333        });
 9334
 9335        workspace.update_in(cx, |workspace, window, cx| {
 9336            workspace.join_all_panes(window, cx);
 9337        });
 9338
 9339        workspace.update(cx, |workspace, cx| {
 9340            let num_panes = workspace.panes().len();
 9341            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9342            let active_item = workspace
 9343                .active_pane()
 9344                .read(cx)
 9345                .active_item()
 9346                .expect("item is in focus");
 9347
 9348            assert_eq!(num_panes, 1);
 9349            assert_eq!(num_items_in_current_pane, 3);
 9350            assert_eq!(active_item.item_id(), last_item.item_id());
 9351        });
 9352    }
 9353    struct TestModal(FocusHandle);
 9354
 9355    impl TestModal {
 9356        fn new(_: &mut Window, cx: &mut Context<Self>) -> Self {
 9357            Self(cx.focus_handle())
 9358        }
 9359    }
 9360
 9361    impl EventEmitter<DismissEvent> for TestModal {}
 9362
 9363    impl Focusable for TestModal {
 9364        fn focus_handle(&self, _cx: &App) -> FocusHandle {
 9365            self.0.clone()
 9366        }
 9367    }
 9368
 9369    impl ModalView for TestModal {}
 9370
 9371    impl Render for TestModal {
 9372        fn render(
 9373            &mut self,
 9374            _window: &mut Window,
 9375            _cx: &mut Context<TestModal>,
 9376        ) -> impl IntoElement {
 9377            div().track_focus(&self.0)
 9378        }
 9379    }
 9380
 9381    #[gpui::test]
 9382    async fn test_panels(cx: &mut gpui::TestAppContext) {
 9383        init_test(cx);
 9384        let fs = FakeFs::new(cx.executor());
 9385
 9386        let project = Project::test(fs, [], cx).await;
 9387        let (workspace, cx) =
 9388            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9389
 9390        let (panel_1, panel_2) = workspace.update_in(cx, |workspace, window, cx| {
 9391            let panel_1 = cx.new(|cx| TestPanel::new(DockPosition::Left, cx));
 9392            workspace.add_panel(panel_1.clone(), window, cx);
 9393            workspace.toggle_dock(DockPosition::Left, window, cx);
 9394            let panel_2 = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 9395            workspace.add_panel(panel_2.clone(), window, cx);
 9396            workspace.toggle_dock(DockPosition::Right, window, cx);
 9397
 9398            let left_dock = workspace.left_dock();
 9399            assert_eq!(
 9400                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9401                panel_1.panel_id()
 9402            );
 9403            assert_eq!(
 9404                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9405                panel_1.size(window, cx)
 9406            );
 9407
 9408            left_dock.update(cx, |left_dock, cx| {
 9409                left_dock.resize_active_panel(Some(px(1337.)), window, cx)
 9410            });
 9411            assert_eq!(
 9412                workspace
 9413                    .right_dock()
 9414                    .read(cx)
 9415                    .visible_panel()
 9416                    .unwrap()
 9417                    .panel_id(),
 9418                panel_2.panel_id(),
 9419            );
 9420
 9421            (panel_1, panel_2)
 9422        });
 9423
 9424        // Move panel_1 to the right
 9425        panel_1.update_in(cx, |panel_1, window, cx| {
 9426            panel_1.set_position(DockPosition::Right, window, cx)
 9427        });
 9428
 9429        workspace.update_in(cx, |workspace, window, cx| {
 9430            // Since panel_1 was visible on the left, it should now be visible now that it's been moved to the right.
 9431            // Since it was the only panel on the left, the left dock should now be closed.
 9432            assert!(!workspace.left_dock().read(cx).is_open());
 9433            assert!(workspace.left_dock().read(cx).visible_panel().is_none());
 9434            let right_dock = workspace.right_dock();
 9435            assert_eq!(
 9436                right_dock.read(cx).visible_panel().unwrap().panel_id(),
 9437                panel_1.panel_id()
 9438            );
 9439            assert_eq!(
 9440                right_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9441                px(1337.)
 9442            );
 9443
 9444            // Now we move panel_2 to the left
 9445            panel_2.set_position(DockPosition::Left, window, cx);
 9446        });
 9447
 9448        workspace.update(cx, |workspace, cx| {
 9449            // Since panel_2 was not visible on the right, we don't open the left dock.
 9450            assert!(!workspace.left_dock().read(cx).is_open());
 9451            // And the right dock is unaffected in its displaying of panel_1
 9452            assert!(workspace.right_dock().read(cx).is_open());
 9453            assert_eq!(
 9454                workspace
 9455                    .right_dock()
 9456                    .read(cx)
 9457                    .visible_panel()
 9458                    .unwrap()
 9459                    .panel_id(),
 9460                panel_1.panel_id(),
 9461            );
 9462        });
 9463
 9464        // Move panel_1 back to the left
 9465        panel_1.update_in(cx, |panel_1, window, cx| {
 9466            panel_1.set_position(DockPosition::Left, window, cx)
 9467        });
 9468
 9469        workspace.update_in(cx, |workspace, window, cx| {
 9470            // Since panel_1 was visible on the right, we open the left dock and make panel_1 active.
 9471            let left_dock = workspace.left_dock();
 9472            assert!(left_dock.read(cx).is_open());
 9473            assert_eq!(
 9474                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9475                panel_1.panel_id()
 9476            );
 9477            assert_eq!(
 9478                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9479                px(1337.)
 9480            );
 9481            // And the right dock should be closed as it no longer has any panels.
 9482            assert!(!workspace.right_dock().read(cx).is_open());
 9483
 9484            // Now we move panel_1 to the bottom
 9485            panel_1.set_position(DockPosition::Bottom, window, cx);
 9486        });
 9487
 9488        workspace.update_in(cx, |workspace, window, cx| {
 9489            // Since panel_1 was visible on the left, we close the left dock.
 9490            assert!(!workspace.left_dock().read(cx).is_open());
 9491            // The bottom dock is sized based on the panel's default size,
 9492            // since the panel orientation changed from vertical to horizontal.
 9493            let bottom_dock = workspace.bottom_dock();
 9494            assert_eq!(
 9495                bottom_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9496                panel_1.size(window, cx),
 9497            );
 9498            // Close bottom dock and move panel_1 back to the left.
 9499            bottom_dock.update(cx, |bottom_dock, cx| {
 9500                bottom_dock.set_open(false, window, cx)
 9501            });
 9502            panel_1.set_position(DockPosition::Left, window, cx);
 9503        });
 9504
 9505        // Emit activated event on panel 1
 9506        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Activate));
 9507
 9508        // Now the left dock is open and panel_1 is active and focused.
 9509        workspace.update_in(cx, |workspace, window, cx| {
 9510            let left_dock = workspace.left_dock();
 9511            assert!(left_dock.read(cx).is_open());
 9512            assert_eq!(
 9513                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9514                panel_1.panel_id(),
 9515            );
 9516            assert!(panel_1.focus_handle(cx).is_focused(window));
 9517        });
 9518
 9519        // Emit closed event on panel 2, which is not active
 9520        panel_2.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9521
 9522        // Wo don't close the left dock, because panel_2 wasn't the active panel
 9523        workspace.update(cx, |workspace, cx| {
 9524            let left_dock = workspace.left_dock();
 9525            assert!(left_dock.read(cx).is_open());
 9526            assert_eq!(
 9527                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9528                panel_1.panel_id(),
 9529            );
 9530        });
 9531
 9532        // Emitting a ZoomIn event shows the panel as zoomed.
 9533        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomIn));
 9534        workspace.read_with(cx, |workspace, _| {
 9535            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9536            assert_eq!(workspace.zoomed_position, Some(DockPosition::Left));
 9537        });
 9538
 9539        // Move panel to another dock while it is zoomed
 9540        panel_1.update_in(cx, |panel, window, cx| {
 9541            panel.set_position(DockPosition::Right, window, cx)
 9542        });
 9543        workspace.read_with(cx, |workspace, _| {
 9544            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9545
 9546            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9547        });
 9548
 9549        // This is a helper for getting a:
 9550        // - valid focus on an element,
 9551        // - that isn't a part of the panes and panels system of the Workspace,
 9552        // - and doesn't trigger the 'on_focus_lost' API.
 9553        let focus_other_view = {
 9554            let workspace = workspace.clone();
 9555            move |cx: &mut VisualTestContext| {
 9556                workspace.update_in(cx, |workspace, window, cx| {
 9557                    if workspace.active_modal::<TestModal>(cx).is_some() {
 9558                        workspace.toggle_modal(window, cx, TestModal::new);
 9559                        workspace.toggle_modal(window, cx, TestModal::new);
 9560                    } else {
 9561                        workspace.toggle_modal(window, cx, TestModal::new);
 9562                    }
 9563                })
 9564            }
 9565        };
 9566
 9567        // If focus is transferred to another view that's not a panel or another pane, we still show
 9568        // the panel as zoomed.
 9569        focus_other_view(cx);
 9570        workspace.read_with(cx, |workspace, _| {
 9571            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9572            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9573        });
 9574
 9575        // If focus is transferred elsewhere in the workspace, the panel is no longer zoomed.
 9576        workspace.update_in(cx, |_workspace, window, cx| {
 9577            cx.focus_self(window);
 9578        });
 9579        workspace.read_with(cx, |workspace, _| {
 9580            assert_eq!(workspace.zoomed, None);
 9581            assert_eq!(workspace.zoomed_position, None);
 9582        });
 9583
 9584        // If focus is transferred again to another view that's not a panel or a pane, we won't
 9585        // show the panel as zoomed because it wasn't zoomed before.
 9586        focus_other_view(cx);
 9587        workspace.read_with(cx, |workspace, _| {
 9588            assert_eq!(workspace.zoomed, None);
 9589            assert_eq!(workspace.zoomed_position, None);
 9590        });
 9591
 9592        // When the panel is activated, it is zoomed again.
 9593        cx.dispatch_action(ToggleRightDock);
 9594        workspace.read_with(cx, |workspace, _| {
 9595            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9596            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9597        });
 9598
 9599        // Emitting a ZoomOut event unzooms the panel.
 9600        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomOut));
 9601        workspace.read_with(cx, |workspace, _| {
 9602            assert_eq!(workspace.zoomed, None);
 9603            assert_eq!(workspace.zoomed_position, None);
 9604        });
 9605
 9606        // Emit closed event on panel 1, which is active
 9607        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9608
 9609        // Now the left dock is closed, because panel_1 was the active panel
 9610        workspace.update(cx, |workspace, cx| {
 9611            let right_dock = workspace.right_dock();
 9612            assert!(!right_dock.read(cx).is_open());
 9613        });
 9614    }
 9615
 9616    #[gpui::test]
 9617    async fn test_no_save_prompt_when_multi_buffer_dirty_items_closed(cx: &mut TestAppContext) {
 9618        init_test(cx);
 9619
 9620        let fs = FakeFs::new(cx.background_executor.clone());
 9621        let project = Project::test(fs, [], cx).await;
 9622        let (workspace, cx) =
 9623            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9624        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9625
 9626        let dirty_regular_buffer = cx.new(|cx| {
 9627            TestItem::new(cx)
 9628                .with_dirty(true)
 9629                .with_label("1.txt")
 9630                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9631        });
 9632        let dirty_regular_buffer_2 = cx.new(|cx| {
 9633            TestItem::new(cx)
 9634                .with_dirty(true)
 9635                .with_label("2.txt")
 9636                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9637        });
 9638        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9639            TestItem::new(cx)
 9640                .with_dirty(true)
 9641                .with_buffer_kind(ItemBufferKind::Multibuffer)
 9642                .with_label("Fake Project Search")
 9643                .with_project_items(&[
 9644                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9645                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9646                ])
 9647        });
 9648        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9649        workspace.update_in(cx, |workspace, window, cx| {
 9650            workspace.add_item(
 9651                pane.clone(),
 9652                Box::new(dirty_regular_buffer.clone()),
 9653                None,
 9654                false,
 9655                false,
 9656                window,
 9657                cx,
 9658            );
 9659            workspace.add_item(
 9660                pane.clone(),
 9661                Box::new(dirty_regular_buffer_2.clone()),
 9662                None,
 9663                false,
 9664                false,
 9665                window,
 9666                cx,
 9667            );
 9668            workspace.add_item(
 9669                pane.clone(),
 9670                Box::new(dirty_multi_buffer_with_both.clone()),
 9671                None,
 9672                false,
 9673                false,
 9674                window,
 9675                cx,
 9676            );
 9677        });
 9678
 9679        pane.update_in(cx, |pane, window, cx| {
 9680            pane.activate_item(2, true, true, window, cx);
 9681            assert_eq!(
 9682                pane.active_item().unwrap().item_id(),
 9683                multi_buffer_with_both_files_id,
 9684                "Should select the multi buffer in the pane"
 9685            );
 9686        });
 9687        let close_all_but_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9688            pane.close_other_items(
 9689                &CloseOtherItems {
 9690                    save_intent: Some(SaveIntent::Save),
 9691                    close_pinned: true,
 9692                },
 9693                None,
 9694                window,
 9695                cx,
 9696            )
 9697        });
 9698        cx.background_executor.run_until_parked();
 9699        assert!(!cx.has_pending_prompt());
 9700        close_all_but_multi_buffer_task
 9701            .await
 9702            .expect("Closing all buffers but the multi buffer failed");
 9703        pane.update(cx, |pane, cx| {
 9704            assert_eq!(dirty_regular_buffer.read(cx).save_count, 1);
 9705            assert_eq!(dirty_multi_buffer_with_both.read(cx).save_count, 0);
 9706            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 1);
 9707            assert_eq!(pane.items_len(), 1);
 9708            assert_eq!(
 9709                pane.active_item().unwrap().item_id(),
 9710                multi_buffer_with_both_files_id,
 9711                "Should have only the multi buffer left in the pane"
 9712            );
 9713            assert!(
 9714                dirty_multi_buffer_with_both.read(cx).is_dirty,
 9715                "The multi buffer containing the unsaved buffer should still be dirty"
 9716            );
 9717        });
 9718
 9719        dirty_regular_buffer.update(cx, |buffer, cx| {
 9720            buffer.project_items[0].update(cx, |pi, _| pi.is_dirty = true)
 9721        });
 9722
 9723        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9724            pane.close_active_item(
 9725                &CloseActiveItem {
 9726                    save_intent: Some(SaveIntent::Close),
 9727                    close_pinned: false,
 9728                },
 9729                window,
 9730                cx,
 9731            )
 9732        });
 9733        cx.background_executor.run_until_parked();
 9734        assert!(
 9735            cx.has_pending_prompt(),
 9736            "Dirty multi buffer should prompt a save dialog"
 9737        );
 9738        cx.simulate_prompt_answer("Save");
 9739        cx.background_executor.run_until_parked();
 9740        close_multi_buffer_task
 9741            .await
 9742            .expect("Closing the multi buffer failed");
 9743        pane.update(cx, |pane, cx| {
 9744            assert_eq!(
 9745                dirty_multi_buffer_with_both.read(cx).save_count,
 9746                1,
 9747                "Multi buffer item should get be saved"
 9748            );
 9749            // Test impl does not save inner items, so we do not assert them
 9750            assert_eq!(
 9751                pane.items_len(),
 9752                0,
 9753                "No more items should be left in the pane"
 9754            );
 9755            assert!(pane.active_item().is_none());
 9756        });
 9757    }
 9758
 9759    #[gpui::test]
 9760    async fn test_save_prompt_when_dirty_multi_buffer_closed_with_some_of_its_dirty_items_not_present_in_the_pane(
 9761        cx: &mut TestAppContext,
 9762    ) {
 9763        init_test(cx);
 9764
 9765        let fs = FakeFs::new(cx.background_executor.clone());
 9766        let project = Project::test(fs, [], cx).await;
 9767        let (workspace, cx) =
 9768            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9769        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9770
 9771        let dirty_regular_buffer = cx.new(|cx| {
 9772            TestItem::new(cx)
 9773                .with_dirty(true)
 9774                .with_label("1.txt")
 9775                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9776        });
 9777        let dirty_regular_buffer_2 = cx.new(|cx| {
 9778            TestItem::new(cx)
 9779                .with_dirty(true)
 9780                .with_label("2.txt")
 9781                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9782        });
 9783        let clear_regular_buffer = cx.new(|cx| {
 9784            TestItem::new(cx)
 9785                .with_label("3.txt")
 9786                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
 9787        });
 9788
 9789        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9790            TestItem::new(cx)
 9791                .with_dirty(true)
 9792                .with_buffer_kind(ItemBufferKind::Multibuffer)
 9793                .with_label("Fake Project Search")
 9794                .with_project_items(&[
 9795                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9796                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9797                    clear_regular_buffer.read(cx).project_items[0].clone(),
 9798                ])
 9799        });
 9800        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9801        workspace.update_in(cx, |workspace, window, cx| {
 9802            workspace.add_item(
 9803                pane.clone(),
 9804                Box::new(dirty_regular_buffer.clone()),
 9805                None,
 9806                false,
 9807                false,
 9808                window,
 9809                cx,
 9810            );
 9811            workspace.add_item(
 9812                pane.clone(),
 9813                Box::new(dirty_multi_buffer_with_both.clone()),
 9814                None,
 9815                false,
 9816                false,
 9817                window,
 9818                cx,
 9819            );
 9820        });
 9821
 9822        pane.update_in(cx, |pane, window, cx| {
 9823            pane.activate_item(1, true, true, window, cx);
 9824            assert_eq!(
 9825                pane.active_item().unwrap().item_id(),
 9826                multi_buffer_with_both_files_id,
 9827                "Should select the multi buffer in the pane"
 9828            );
 9829        });
 9830        let _close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9831            pane.close_active_item(
 9832                &CloseActiveItem {
 9833                    save_intent: None,
 9834                    close_pinned: false,
 9835                },
 9836                window,
 9837                cx,
 9838            )
 9839        });
 9840        cx.background_executor.run_until_parked();
 9841        assert!(
 9842            cx.has_pending_prompt(),
 9843            "With one dirty item from the multi buffer not being in the pane, a save prompt should be shown"
 9844        );
 9845    }
 9846
 9847    /// Tests that when `close_on_file_delete` is enabled, files are automatically
 9848    /// closed when they are deleted from disk.
 9849    #[gpui::test]
 9850    async fn test_close_on_disk_deletion_enabled(cx: &mut TestAppContext) {
 9851        init_test(cx);
 9852
 9853        // Enable the close_on_disk_deletion setting
 9854        cx.update_global(|store: &mut SettingsStore, cx| {
 9855            store.update_user_settings(cx, |settings| {
 9856                settings.workspace.close_on_file_delete = Some(true);
 9857            });
 9858        });
 9859
 9860        let fs = FakeFs::new(cx.background_executor.clone());
 9861        let project = Project::test(fs, [], cx).await;
 9862        let (workspace, cx) =
 9863            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9864        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9865
 9866        // Create a test item that simulates a file
 9867        let item = cx.new(|cx| {
 9868            TestItem::new(cx)
 9869                .with_label("test.txt")
 9870                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9871        });
 9872
 9873        // Add item to workspace
 9874        workspace.update_in(cx, |workspace, window, cx| {
 9875            workspace.add_item(
 9876                pane.clone(),
 9877                Box::new(item.clone()),
 9878                None,
 9879                false,
 9880                false,
 9881                window,
 9882                cx,
 9883            );
 9884        });
 9885
 9886        // Verify the item is in the pane
 9887        pane.read_with(cx, |pane, _| {
 9888            assert_eq!(pane.items().count(), 1);
 9889        });
 9890
 9891        // Simulate file deletion by setting the item's deleted state
 9892        item.update(cx, |item, _| {
 9893            item.set_has_deleted_file(true);
 9894        });
 9895
 9896        // Emit UpdateTab event to trigger the close behavior
 9897        cx.run_until_parked();
 9898        item.update(cx, |_, cx| {
 9899            cx.emit(ItemEvent::UpdateTab);
 9900        });
 9901
 9902        // Allow the close operation to complete
 9903        cx.run_until_parked();
 9904
 9905        // Verify the item was automatically closed
 9906        pane.read_with(cx, |pane, _| {
 9907            assert_eq!(
 9908                pane.items().count(),
 9909                0,
 9910                "Item should be automatically closed when file is deleted"
 9911            );
 9912        });
 9913    }
 9914
 9915    /// Tests that when `close_on_file_delete` is disabled (default), files remain
 9916    /// open with a strikethrough when they are deleted from disk.
 9917    #[gpui::test]
 9918    async fn test_close_on_disk_deletion_disabled(cx: &mut TestAppContext) {
 9919        init_test(cx);
 9920
 9921        // Ensure close_on_disk_deletion is disabled (default)
 9922        cx.update_global(|store: &mut SettingsStore, cx| {
 9923            store.update_user_settings(cx, |settings| {
 9924                settings.workspace.close_on_file_delete = Some(false);
 9925            });
 9926        });
 9927
 9928        let fs = FakeFs::new(cx.background_executor.clone());
 9929        let project = Project::test(fs, [], cx).await;
 9930        let (workspace, cx) =
 9931            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9932        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9933
 9934        // Create a test item that simulates a file
 9935        let item = cx.new(|cx| {
 9936            TestItem::new(cx)
 9937                .with_label("test.txt")
 9938                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9939        });
 9940
 9941        // Add item to workspace
 9942        workspace.update_in(cx, |workspace, window, cx| {
 9943            workspace.add_item(
 9944                pane.clone(),
 9945                Box::new(item.clone()),
 9946                None,
 9947                false,
 9948                false,
 9949                window,
 9950                cx,
 9951            );
 9952        });
 9953
 9954        // Verify the item is in the pane
 9955        pane.read_with(cx, |pane, _| {
 9956            assert_eq!(pane.items().count(), 1);
 9957        });
 9958
 9959        // Simulate file deletion
 9960        item.update(cx, |item, _| {
 9961            item.set_has_deleted_file(true);
 9962        });
 9963
 9964        // Emit UpdateTab event
 9965        cx.run_until_parked();
 9966        item.update(cx, |_, cx| {
 9967            cx.emit(ItemEvent::UpdateTab);
 9968        });
 9969
 9970        // Allow any potential close operation to complete
 9971        cx.run_until_parked();
 9972
 9973        // Verify the item remains open (with strikethrough)
 9974        pane.read_with(cx, |pane, _| {
 9975            assert_eq!(
 9976                pane.items().count(),
 9977                1,
 9978                "Item should remain open when close_on_disk_deletion is disabled"
 9979            );
 9980        });
 9981
 9982        // Verify the item shows as deleted
 9983        item.read_with(cx, |item, _| {
 9984            assert!(
 9985                item.has_deleted_file,
 9986                "Item should be marked as having deleted file"
 9987            );
 9988        });
 9989    }
 9990
 9991    /// Tests that dirty files are not automatically closed when deleted from disk,
 9992    /// even when `close_on_file_delete` is enabled. This ensures users don't lose
 9993    /// unsaved changes without being prompted.
 9994    #[gpui::test]
 9995    async fn test_close_on_disk_deletion_with_dirty_file(cx: &mut TestAppContext) {
 9996        init_test(cx);
 9997
 9998        // Enable the close_on_file_delete setting
 9999        cx.update_global(|store: &mut SettingsStore, cx| {
10000            store.update_user_settings(cx, |settings| {
10001                settings.workspace.close_on_file_delete = Some(true);
10002            });
10003        });
10004
10005        let fs = FakeFs::new(cx.background_executor.clone());
10006        let project = Project::test(fs, [], cx).await;
10007        let (workspace, cx) =
10008            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10009        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10010
10011        // Create a dirty test item
10012        let item = cx.new(|cx| {
10013            TestItem::new(cx)
10014                .with_dirty(true)
10015                .with_label("test.txt")
10016                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
10017        });
10018
10019        // Add item to workspace
10020        workspace.update_in(cx, |workspace, window, cx| {
10021            workspace.add_item(
10022                pane.clone(),
10023                Box::new(item.clone()),
10024                None,
10025                false,
10026                false,
10027                window,
10028                cx,
10029            );
10030        });
10031
10032        // Simulate file deletion
10033        item.update(cx, |item, _| {
10034            item.set_has_deleted_file(true);
10035        });
10036
10037        // Emit UpdateTab event to trigger the close behavior
10038        cx.run_until_parked();
10039        item.update(cx, |_, cx| {
10040            cx.emit(ItemEvent::UpdateTab);
10041        });
10042
10043        // Allow any potential close operation to complete
10044        cx.run_until_parked();
10045
10046        // Verify the item remains open (dirty files are not auto-closed)
10047        pane.read_with(cx, |pane, _| {
10048            assert_eq!(
10049                pane.items().count(),
10050                1,
10051                "Dirty items should not be automatically closed even when file is deleted"
10052            );
10053        });
10054
10055        // Verify the item is marked as deleted and still dirty
10056        item.read_with(cx, |item, _| {
10057            assert!(
10058                item.has_deleted_file,
10059                "Item should be marked as having deleted file"
10060            );
10061            assert!(item.is_dirty, "Item should still be dirty");
10062        });
10063    }
10064
10065    /// Tests that navigation history is cleaned up when files are auto-closed
10066    /// due to deletion from disk.
10067    #[gpui::test]
10068    async fn test_close_on_disk_deletion_cleans_navigation_history(cx: &mut TestAppContext) {
10069        init_test(cx);
10070
10071        // Enable the close_on_file_delete setting
10072        cx.update_global(|store: &mut SettingsStore, cx| {
10073            store.update_user_settings(cx, |settings| {
10074                settings.workspace.close_on_file_delete = Some(true);
10075            });
10076        });
10077
10078        let fs = FakeFs::new(cx.background_executor.clone());
10079        let project = Project::test(fs, [], cx).await;
10080        let (workspace, cx) =
10081            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10082        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10083
10084        // Create test items
10085        let item1 = cx.new(|cx| {
10086            TestItem::new(cx)
10087                .with_label("test1.txt")
10088                .with_project_items(&[TestProjectItem::new(1, "test1.txt", cx)])
10089        });
10090        let item1_id = item1.item_id();
10091
10092        let item2 = cx.new(|cx| {
10093            TestItem::new(cx)
10094                .with_label("test2.txt")
10095                .with_project_items(&[TestProjectItem::new(2, "test2.txt", cx)])
10096        });
10097
10098        // Add items to workspace
10099        workspace.update_in(cx, |workspace, window, cx| {
10100            workspace.add_item(
10101                pane.clone(),
10102                Box::new(item1.clone()),
10103                None,
10104                false,
10105                false,
10106                window,
10107                cx,
10108            );
10109            workspace.add_item(
10110                pane.clone(),
10111                Box::new(item2.clone()),
10112                None,
10113                false,
10114                false,
10115                window,
10116                cx,
10117            );
10118        });
10119
10120        // Activate item1 to ensure it gets navigation entries
10121        pane.update_in(cx, |pane, window, cx| {
10122            pane.activate_item(0, true, true, window, cx);
10123        });
10124
10125        // Switch to item2 and back to create navigation history
10126        pane.update_in(cx, |pane, window, cx| {
10127            pane.activate_item(1, true, true, window, cx);
10128        });
10129        cx.run_until_parked();
10130
10131        pane.update_in(cx, |pane, window, cx| {
10132            pane.activate_item(0, true, true, window, cx);
10133        });
10134        cx.run_until_parked();
10135
10136        // Simulate file deletion for item1
10137        item1.update(cx, |item, _| {
10138            item.set_has_deleted_file(true);
10139        });
10140
10141        // Emit UpdateTab event to trigger the close behavior
10142        item1.update(cx, |_, cx| {
10143            cx.emit(ItemEvent::UpdateTab);
10144        });
10145        cx.run_until_parked();
10146
10147        // Verify item1 was closed
10148        pane.read_with(cx, |pane, _| {
10149            assert_eq!(
10150                pane.items().count(),
10151                1,
10152                "Should have 1 item remaining after auto-close"
10153            );
10154        });
10155
10156        // Check navigation history after close
10157        let has_item = pane.read_with(cx, |pane, cx| {
10158            let mut has_item = false;
10159            pane.nav_history().for_each_entry(cx, |entry, _| {
10160                if entry.item.id() == item1_id {
10161                    has_item = true;
10162                }
10163            });
10164            has_item
10165        });
10166
10167        assert!(
10168            !has_item,
10169            "Navigation history should not contain closed item entries"
10170        );
10171    }
10172
10173    #[gpui::test]
10174    async fn test_no_save_prompt_when_dirty_multi_buffer_closed_with_all_of_its_dirty_items_present_in_the_pane(
10175        cx: &mut TestAppContext,
10176    ) {
10177        init_test(cx);
10178
10179        let fs = FakeFs::new(cx.background_executor.clone());
10180        let project = Project::test(fs, [], cx).await;
10181        let (workspace, cx) =
10182            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10183        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10184
10185        let dirty_regular_buffer = cx.new(|cx| {
10186            TestItem::new(cx)
10187                .with_dirty(true)
10188                .with_label("1.txt")
10189                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10190        });
10191        let dirty_regular_buffer_2 = cx.new(|cx| {
10192            TestItem::new(cx)
10193                .with_dirty(true)
10194                .with_label("2.txt")
10195                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10196        });
10197        let clear_regular_buffer = cx.new(|cx| {
10198            TestItem::new(cx)
10199                .with_label("3.txt")
10200                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
10201        });
10202
10203        let dirty_multi_buffer = cx.new(|cx| {
10204            TestItem::new(cx)
10205                .with_dirty(true)
10206                .with_buffer_kind(ItemBufferKind::Multibuffer)
10207                .with_label("Fake Project Search")
10208                .with_project_items(&[
10209                    dirty_regular_buffer.read(cx).project_items[0].clone(),
10210                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
10211                    clear_regular_buffer.read(cx).project_items[0].clone(),
10212                ])
10213        });
10214        workspace.update_in(cx, |workspace, window, cx| {
10215            workspace.add_item(
10216                pane.clone(),
10217                Box::new(dirty_regular_buffer.clone()),
10218                None,
10219                false,
10220                false,
10221                window,
10222                cx,
10223            );
10224            workspace.add_item(
10225                pane.clone(),
10226                Box::new(dirty_regular_buffer_2.clone()),
10227                None,
10228                false,
10229                false,
10230                window,
10231                cx,
10232            );
10233            workspace.add_item(
10234                pane.clone(),
10235                Box::new(dirty_multi_buffer.clone()),
10236                None,
10237                false,
10238                false,
10239                window,
10240                cx,
10241            );
10242        });
10243
10244        pane.update_in(cx, |pane, window, cx| {
10245            pane.activate_item(2, true, true, window, cx);
10246            assert_eq!(
10247                pane.active_item().unwrap().item_id(),
10248                dirty_multi_buffer.item_id(),
10249                "Should select the multi buffer in the pane"
10250            );
10251        });
10252        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
10253            pane.close_active_item(
10254                &CloseActiveItem {
10255                    save_intent: None,
10256                    close_pinned: false,
10257                },
10258                window,
10259                cx,
10260            )
10261        });
10262        cx.background_executor.run_until_parked();
10263        assert!(
10264            !cx.has_pending_prompt(),
10265            "All dirty items from the multi buffer are in the pane still, no save prompts should be shown"
10266        );
10267        close_multi_buffer_task
10268            .await
10269            .expect("Closing multi buffer failed");
10270        pane.update(cx, |pane, cx| {
10271            assert_eq!(dirty_regular_buffer.read(cx).save_count, 0);
10272            assert_eq!(dirty_multi_buffer.read(cx).save_count, 0);
10273            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 0);
10274            assert_eq!(
10275                pane.items()
10276                    .map(|item| item.item_id())
10277                    .sorted()
10278                    .collect::<Vec<_>>(),
10279                vec![
10280                    dirty_regular_buffer.item_id(),
10281                    dirty_regular_buffer_2.item_id(),
10282                ],
10283                "Should have no multi buffer left in the pane"
10284            );
10285            assert!(dirty_regular_buffer.read(cx).is_dirty);
10286            assert!(dirty_regular_buffer_2.read(cx).is_dirty);
10287        });
10288    }
10289
10290    #[gpui::test]
10291    async fn test_move_focused_panel_to_next_position(cx: &mut gpui::TestAppContext) {
10292        init_test(cx);
10293        let fs = FakeFs::new(cx.executor());
10294        let project = Project::test(fs, [], cx).await;
10295        let (workspace, cx) =
10296            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10297
10298        // Add a new panel to the right dock, opening the dock and setting the
10299        // focus to the new panel.
10300        let panel = workspace.update_in(cx, |workspace, window, cx| {
10301            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
10302            workspace.add_panel(panel.clone(), window, cx);
10303
10304            workspace
10305                .right_dock()
10306                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
10307
10308            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10309
10310            panel
10311        });
10312
10313        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10314        // panel to the next valid position which, in this case, is the left
10315        // dock.
10316        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10317        workspace.update(cx, |workspace, cx| {
10318            assert!(workspace.left_dock().read(cx).is_open());
10319            assert_eq!(panel.read(cx).position, DockPosition::Left);
10320        });
10321
10322        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10323        // panel to the next valid position which, in this case, is the bottom
10324        // dock.
10325        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10326        workspace.update(cx, |workspace, cx| {
10327            assert!(workspace.bottom_dock().read(cx).is_open());
10328            assert_eq!(panel.read(cx).position, DockPosition::Bottom);
10329        });
10330
10331        // Dispatch the `MoveFocusedPanelToNextPosition` action again, this time
10332        // around moving the panel to its initial position, the right dock.
10333        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10334        workspace.update(cx, |workspace, cx| {
10335            assert!(workspace.right_dock().read(cx).is_open());
10336            assert_eq!(panel.read(cx).position, DockPosition::Right);
10337        });
10338
10339        // Remove focus from the panel, ensuring that, if the panel is not
10340        // focused, the `MoveFocusedPanelToNextPosition` action does not update
10341        // the panel's position, so the panel is still in the right dock.
10342        workspace.update_in(cx, |workspace, window, cx| {
10343            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10344        });
10345
10346        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10347        workspace.update(cx, |workspace, cx| {
10348            assert!(workspace.right_dock().read(cx).is_open());
10349            assert_eq!(panel.read(cx).position, DockPosition::Right);
10350        });
10351    }
10352
10353    #[gpui::test]
10354    async fn test_moving_items_create_panes(cx: &mut TestAppContext) {
10355        init_test(cx);
10356
10357        let fs = FakeFs::new(cx.executor());
10358        let project = Project::test(fs, [], cx).await;
10359        let (workspace, cx) =
10360            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10361
10362        let item_1 = cx.new(|cx| {
10363            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10364        });
10365        workspace.update_in(cx, |workspace, window, cx| {
10366            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10367            workspace.move_item_to_pane_in_direction(
10368                &MoveItemToPaneInDirection {
10369                    direction: SplitDirection::Right,
10370                    focus: true,
10371                    clone: false,
10372                },
10373                window,
10374                cx,
10375            );
10376            workspace.move_item_to_pane_at_index(
10377                &MoveItemToPane {
10378                    destination: 3,
10379                    focus: true,
10380                    clone: false,
10381                },
10382                window,
10383                cx,
10384            );
10385
10386            assert_eq!(workspace.panes.len(), 1, "No new panes were created");
10387            assert_eq!(
10388                pane_items_paths(&workspace.active_pane, cx),
10389                vec!["first.txt".to_string()],
10390                "Single item was not moved anywhere"
10391            );
10392        });
10393
10394        let item_2 = cx.new(|cx| {
10395            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "second.txt", cx)])
10396        });
10397        workspace.update_in(cx, |workspace, window, cx| {
10398            workspace.add_item_to_active_pane(Box::new(item_2), None, true, window, cx);
10399            assert_eq!(
10400                pane_items_paths(&workspace.panes[0], cx),
10401                vec!["first.txt".to_string(), "second.txt".to_string()],
10402            );
10403            workspace.move_item_to_pane_in_direction(
10404                &MoveItemToPaneInDirection {
10405                    direction: SplitDirection::Right,
10406                    focus: true,
10407                    clone: false,
10408                },
10409                window,
10410                cx,
10411            );
10412
10413            assert_eq!(workspace.panes.len(), 2, "A new pane should be created");
10414            assert_eq!(
10415                pane_items_paths(&workspace.panes[0], cx),
10416                vec!["first.txt".to_string()],
10417                "After moving, one item should be left in the original pane"
10418            );
10419            assert_eq!(
10420                pane_items_paths(&workspace.panes[1], cx),
10421                vec!["second.txt".to_string()],
10422                "New item should have been moved to the new pane"
10423            );
10424        });
10425
10426        let item_3 = cx.new(|cx| {
10427            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "third.txt", cx)])
10428        });
10429        workspace.update_in(cx, |workspace, window, cx| {
10430            let original_pane = workspace.panes[0].clone();
10431            workspace.set_active_pane(&original_pane, window, cx);
10432            workspace.add_item_to_active_pane(Box::new(item_3), None, true, window, cx);
10433            assert_eq!(workspace.panes.len(), 2, "No new panes were created");
10434            assert_eq!(
10435                pane_items_paths(&workspace.active_pane, cx),
10436                vec!["first.txt".to_string(), "third.txt".to_string()],
10437                "New pane should be ready to move one item out"
10438            );
10439
10440            workspace.move_item_to_pane_at_index(
10441                &MoveItemToPane {
10442                    destination: 3,
10443                    focus: true,
10444                    clone: false,
10445                },
10446                window,
10447                cx,
10448            );
10449            assert_eq!(workspace.panes.len(), 3, "A new pane should be created");
10450            assert_eq!(
10451                pane_items_paths(&workspace.active_pane, cx),
10452                vec!["first.txt".to_string()],
10453                "After moving, one item should be left in the original pane"
10454            );
10455            assert_eq!(
10456                pane_items_paths(&workspace.panes[1], cx),
10457                vec!["second.txt".to_string()],
10458                "Previously created pane should be unchanged"
10459            );
10460            assert_eq!(
10461                pane_items_paths(&workspace.panes[2], cx),
10462                vec!["third.txt".to_string()],
10463                "New item should have been moved to the new pane"
10464            );
10465        });
10466    }
10467
10468    #[gpui::test]
10469    async fn test_moving_items_can_clone_panes(cx: &mut TestAppContext) {
10470        init_test(cx);
10471
10472        let fs = FakeFs::new(cx.executor());
10473        let project = Project::test(fs, [], cx).await;
10474        let (workspace, cx) =
10475            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10476
10477        let item_1 = cx.new(|cx| {
10478            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10479        });
10480        workspace.update_in(cx, |workspace, window, cx| {
10481            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10482            workspace.move_item_to_pane_in_direction(
10483                &MoveItemToPaneInDirection {
10484                    direction: SplitDirection::Right,
10485                    focus: true,
10486                    clone: true,
10487                },
10488                window,
10489                cx,
10490            );
10491            workspace.move_item_to_pane_at_index(
10492                &MoveItemToPane {
10493                    destination: 3,
10494                    focus: true,
10495                    clone: true,
10496                },
10497                window,
10498                cx,
10499            );
10500
10501            assert_eq!(workspace.panes.len(), 3, "Two new panes were created");
10502            for pane in workspace.panes() {
10503                assert_eq!(
10504                    pane_items_paths(pane, cx),
10505                    vec!["first.txt".to_string()],
10506                    "Single item exists in all panes"
10507                );
10508            }
10509        });
10510
10511        // verify that the active pane has been updated after waiting for the
10512        // pane focus event to fire and resolve
10513        workspace.read_with(cx, |workspace, _app| {
10514            assert_eq!(
10515                workspace.active_pane(),
10516                &workspace.panes[2],
10517                "The third pane should be the active one: {:?}",
10518                workspace.panes
10519            );
10520        })
10521    }
10522
10523    mod register_project_item_tests {
10524
10525        use super::*;
10526
10527        // View
10528        struct TestPngItemView {
10529            focus_handle: FocusHandle,
10530        }
10531        // Model
10532        struct TestPngItem {}
10533
10534        impl project::ProjectItem for TestPngItem {
10535            fn try_open(
10536                _project: &Entity<Project>,
10537                path: &ProjectPath,
10538                cx: &mut App,
10539            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10540                if path.path.extension().unwrap() == "png" {
10541                    Some(cx.spawn(async move |cx| cx.new(|_| TestPngItem {})))
10542                } else {
10543                    None
10544                }
10545            }
10546
10547            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10548                None
10549            }
10550
10551            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10552                None
10553            }
10554
10555            fn is_dirty(&self) -> bool {
10556                false
10557            }
10558        }
10559
10560        impl Item for TestPngItemView {
10561            type Event = ();
10562            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10563                "".into()
10564            }
10565        }
10566        impl EventEmitter<()> for TestPngItemView {}
10567        impl Focusable for TestPngItemView {
10568            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10569                self.focus_handle.clone()
10570            }
10571        }
10572
10573        impl Render for TestPngItemView {
10574            fn render(
10575                &mut self,
10576                _window: &mut Window,
10577                _cx: &mut Context<Self>,
10578            ) -> impl IntoElement {
10579                Empty
10580            }
10581        }
10582
10583        impl ProjectItem for TestPngItemView {
10584            type Item = TestPngItem;
10585
10586            fn for_project_item(
10587                _project: Entity<Project>,
10588                _pane: Option<&Pane>,
10589                _item: Entity<Self::Item>,
10590                _: &mut Window,
10591                cx: &mut Context<Self>,
10592            ) -> Self
10593            where
10594                Self: Sized,
10595            {
10596                Self {
10597                    focus_handle: cx.focus_handle(),
10598                }
10599            }
10600        }
10601
10602        // View
10603        struct TestIpynbItemView {
10604            focus_handle: FocusHandle,
10605        }
10606        // Model
10607        struct TestIpynbItem {}
10608
10609        impl project::ProjectItem for TestIpynbItem {
10610            fn try_open(
10611                _project: &Entity<Project>,
10612                path: &ProjectPath,
10613                cx: &mut App,
10614            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10615                if path.path.extension().unwrap() == "ipynb" {
10616                    Some(cx.spawn(async move |cx| cx.new(|_| TestIpynbItem {})))
10617                } else {
10618                    None
10619                }
10620            }
10621
10622            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10623                None
10624            }
10625
10626            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10627                None
10628            }
10629
10630            fn is_dirty(&self) -> bool {
10631                false
10632            }
10633        }
10634
10635        impl Item for TestIpynbItemView {
10636            type Event = ();
10637            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10638                "".into()
10639            }
10640        }
10641        impl EventEmitter<()> for TestIpynbItemView {}
10642        impl Focusable for TestIpynbItemView {
10643            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10644                self.focus_handle.clone()
10645            }
10646        }
10647
10648        impl Render for TestIpynbItemView {
10649            fn render(
10650                &mut self,
10651                _window: &mut Window,
10652                _cx: &mut Context<Self>,
10653            ) -> impl IntoElement {
10654                Empty
10655            }
10656        }
10657
10658        impl ProjectItem for TestIpynbItemView {
10659            type Item = TestIpynbItem;
10660
10661            fn for_project_item(
10662                _project: Entity<Project>,
10663                _pane: Option<&Pane>,
10664                _item: Entity<Self::Item>,
10665                _: &mut Window,
10666                cx: &mut Context<Self>,
10667            ) -> Self
10668            where
10669                Self: Sized,
10670            {
10671                Self {
10672                    focus_handle: cx.focus_handle(),
10673                }
10674            }
10675        }
10676
10677        struct TestAlternatePngItemView {
10678            focus_handle: FocusHandle,
10679        }
10680
10681        impl Item for TestAlternatePngItemView {
10682            type Event = ();
10683            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10684                "".into()
10685            }
10686        }
10687
10688        impl EventEmitter<()> for TestAlternatePngItemView {}
10689        impl Focusable for TestAlternatePngItemView {
10690            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10691                self.focus_handle.clone()
10692            }
10693        }
10694
10695        impl Render for TestAlternatePngItemView {
10696            fn render(
10697                &mut self,
10698                _window: &mut Window,
10699                _cx: &mut Context<Self>,
10700            ) -> impl IntoElement {
10701                Empty
10702            }
10703        }
10704
10705        impl ProjectItem for TestAlternatePngItemView {
10706            type Item = TestPngItem;
10707
10708            fn for_project_item(
10709                _project: Entity<Project>,
10710                _pane: Option<&Pane>,
10711                _item: Entity<Self::Item>,
10712                _: &mut Window,
10713                cx: &mut Context<Self>,
10714            ) -> Self
10715            where
10716                Self: Sized,
10717            {
10718                Self {
10719                    focus_handle: cx.focus_handle(),
10720                }
10721            }
10722        }
10723
10724        #[gpui::test]
10725        async fn test_register_project_item(cx: &mut TestAppContext) {
10726            init_test(cx);
10727
10728            cx.update(|cx| {
10729                register_project_item::<TestPngItemView>(cx);
10730                register_project_item::<TestIpynbItemView>(cx);
10731            });
10732
10733            let fs = FakeFs::new(cx.executor());
10734            fs.insert_tree(
10735                "/root1",
10736                json!({
10737                    "one.png": "BINARYDATAHERE",
10738                    "two.ipynb": "{ totally a notebook }",
10739                    "three.txt": "editing text, sure why not?"
10740                }),
10741            )
10742            .await;
10743
10744            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10745            let (workspace, cx) =
10746                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10747
10748            let worktree_id = project.update(cx, |project, cx| {
10749                project.worktrees(cx).next().unwrap().read(cx).id()
10750            });
10751
10752            let handle = workspace
10753                .update_in(cx, |workspace, window, cx| {
10754                    let project_path = (worktree_id, rel_path("one.png"));
10755                    workspace.open_path(project_path, None, true, window, cx)
10756                })
10757                .await
10758                .unwrap();
10759
10760            // Now we can check if the handle we got back errored or not
10761            assert_eq!(
10762                handle.to_any().entity_type(),
10763                TypeId::of::<TestPngItemView>()
10764            );
10765
10766            let handle = workspace
10767                .update_in(cx, |workspace, window, cx| {
10768                    let project_path = (worktree_id, rel_path("two.ipynb"));
10769                    workspace.open_path(project_path, None, true, window, cx)
10770                })
10771                .await
10772                .unwrap();
10773
10774            assert_eq!(
10775                handle.to_any().entity_type(),
10776                TypeId::of::<TestIpynbItemView>()
10777            );
10778
10779            let handle = workspace
10780                .update_in(cx, |workspace, window, cx| {
10781                    let project_path = (worktree_id, rel_path("three.txt"));
10782                    workspace.open_path(project_path, None, true, window, cx)
10783                })
10784                .await;
10785            assert!(handle.is_err());
10786        }
10787
10788        #[gpui::test]
10789        async fn test_register_project_item_two_enter_one_leaves(cx: &mut TestAppContext) {
10790            init_test(cx);
10791
10792            cx.update(|cx| {
10793                register_project_item::<TestPngItemView>(cx);
10794                register_project_item::<TestAlternatePngItemView>(cx);
10795            });
10796
10797            let fs = FakeFs::new(cx.executor());
10798            fs.insert_tree(
10799                "/root1",
10800                json!({
10801                    "one.png": "BINARYDATAHERE",
10802                    "two.ipynb": "{ totally a notebook }",
10803                    "three.txt": "editing text, sure why not?"
10804                }),
10805            )
10806            .await;
10807            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10808            let (workspace, cx) =
10809                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10810            let worktree_id = project.update(cx, |project, cx| {
10811                project.worktrees(cx).next().unwrap().read(cx).id()
10812            });
10813
10814            let handle = workspace
10815                .update_in(cx, |workspace, window, cx| {
10816                    let project_path = (worktree_id, rel_path("one.png"));
10817                    workspace.open_path(project_path, None, true, window, cx)
10818                })
10819                .await
10820                .unwrap();
10821
10822            // This _must_ be the second item registered
10823            assert_eq!(
10824                handle.to_any().entity_type(),
10825                TypeId::of::<TestAlternatePngItemView>()
10826            );
10827
10828            let handle = workspace
10829                .update_in(cx, |workspace, window, cx| {
10830                    let project_path = (worktree_id, rel_path("three.txt"));
10831                    workspace.open_path(project_path, None, true, window, cx)
10832                })
10833                .await;
10834            assert!(handle.is_err());
10835        }
10836    }
10837
10838    #[gpui::test]
10839    async fn test_status_bar_visibility(cx: &mut TestAppContext) {
10840        init_test(cx);
10841
10842        let fs = FakeFs::new(cx.executor());
10843        let project = Project::test(fs, [], cx).await;
10844        let (workspace, _cx) =
10845            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10846
10847        // Test with status bar shown (default)
10848        workspace.read_with(cx, |workspace, cx| {
10849            let visible = workspace.status_bar_visible(cx);
10850            assert!(visible, "Status bar should be visible by default");
10851        });
10852
10853        // Test with status bar hidden
10854        cx.update_global(|store: &mut SettingsStore, cx| {
10855            store.update_user_settings(cx, |settings| {
10856                settings.status_bar.get_or_insert_default().show = Some(false);
10857            });
10858        });
10859
10860        workspace.read_with(cx, |workspace, cx| {
10861            let visible = workspace.status_bar_visible(cx);
10862            assert!(!visible, "Status bar should be hidden when show is false");
10863        });
10864
10865        // Test with status bar shown explicitly
10866        cx.update_global(|store: &mut SettingsStore, cx| {
10867            store.update_user_settings(cx, |settings| {
10868                settings.status_bar.get_or_insert_default().show = Some(true);
10869            });
10870        });
10871
10872        workspace.read_with(cx, |workspace, cx| {
10873            let visible = workspace.status_bar_visible(cx);
10874            assert!(visible, "Status bar should be visible when show is true");
10875        });
10876    }
10877
10878    fn pane_items_paths(pane: &Entity<Pane>, cx: &App) -> Vec<String> {
10879        pane.read(cx)
10880            .items()
10881            .flat_map(|item| {
10882                item.project_paths(cx)
10883                    .into_iter()
10884                    .map(|path| path.path.display(PathStyle::local()).into_owned())
10885            })
10886            .collect()
10887    }
10888
10889    pub fn init_test(cx: &mut TestAppContext) {
10890        cx.update(|cx| {
10891            let settings_store = SettingsStore::test(cx);
10892            cx.set_global(settings_store);
10893            theme::init(theme::LoadThemes::JustBase, cx);
10894            language::init(cx);
10895            crate::init_settings(cx);
10896            Project::init_settings(cx);
10897        });
10898    }
10899
10900    fn dirty_project_item(id: u64, path: &str, cx: &mut App) -> Entity<TestProjectItem> {
10901        let item = TestProjectItem::new(id, path, cx);
10902        item.update(cx, |item, _| {
10903            item.is_dirty = true;
10904        });
10905        item
10906    }
10907}