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
  288fn 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
  305/// Creates a new file in a split of the desired direction.
  306#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  307#[action(namespace = workspace)]
  308#[serde(deny_unknown_fields)]
  309pub struct NewFileSplit(pub SplitDirection);
  310
  311fn default_right() -> SplitDirection {
  312    SplitDirection::Right
  313}
  314
  315/// Saves all open files in the workspace.
  316#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  317#[action(namespace = workspace)]
  318#[serde(deny_unknown_fields)]
  319pub struct SaveAll {
  320    #[serde(default)]
  321    pub save_intent: Option<SaveIntent>,
  322}
  323
  324/// Saves the current file with the specified options.
  325#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  326#[action(namespace = workspace)]
  327#[serde(deny_unknown_fields)]
  328pub struct Save {
  329    #[serde(default)]
  330    pub save_intent: Option<SaveIntent>,
  331}
  332
  333/// Closes all items and panes in the workspace.
  334#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  335#[action(namespace = workspace)]
  336#[serde(deny_unknown_fields)]
  337pub struct CloseAllItemsAndPanes {
  338    #[serde(default)]
  339    pub save_intent: Option<SaveIntent>,
  340}
  341
  342/// Closes all inactive tabs and panes in the workspace.
  343#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  344#[action(namespace = workspace)]
  345#[serde(deny_unknown_fields)]
  346pub struct CloseInactiveTabsAndPanes {
  347    #[serde(default)]
  348    pub save_intent: Option<SaveIntent>,
  349}
  350
  351/// Sends a sequence of keystrokes to the active element.
  352#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  353#[action(namespace = workspace)]
  354pub struct SendKeystrokes(pub String);
  355
  356actions!(
  357    project_symbols,
  358    [
  359        /// Toggles the project symbols search.
  360        #[action(name = "Toggle")]
  361        ToggleProjectSymbols
  362    ]
  363);
  364
  365/// Toggles the file finder interface.
  366#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  367#[action(namespace = file_finder, name = "Toggle")]
  368#[serde(deny_unknown_fields)]
  369pub struct ToggleFileFinder {
  370    #[serde(default)]
  371    pub separate_history: bool,
  372}
  373
  374/// Increases size of a currently focused dock by a given amount of pixels.
  375#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  376#[action(namespace = workspace)]
  377#[serde(deny_unknown_fields)]
  378pub struct IncreaseActiveDockSize {
  379    /// For 0px parameter, uses UI font size value.
  380    #[serde(default)]
  381    pub px: u32,
  382}
  383
  384/// Decreases size of a currently focused dock by a given amount of pixels.
  385#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  386#[action(namespace = workspace)]
  387#[serde(deny_unknown_fields)]
  388pub struct DecreaseActiveDockSize {
  389    /// For 0px parameter, uses UI font size value.
  390    #[serde(default)]
  391    pub px: u32,
  392}
  393
  394/// Increases size of all currently visible docks uniformly, by a given amount of pixels.
  395#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  396#[action(namespace = workspace)]
  397#[serde(deny_unknown_fields)]
  398pub struct IncreaseOpenDocksSize {
  399    /// For 0px parameter, uses UI font size value.
  400    #[serde(default)]
  401    pub px: u32,
  402}
  403
  404/// Decreases size of all currently visible docks uniformly, by a given amount of pixels.
  405#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  406#[action(namespace = workspace)]
  407#[serde(deny_unknown_fields)]
  408pub struct DecreaseOpenDocksSize {
  409    /// For 0px parameter, uses UI font size value.
  410    #[serde(default)]
  411    pub px: u32,
  412}
  413
  414actions!(
  415    workspace,
  416    [
  417        /// Activates the pane to the left.
  418        ActivatePaneLeft,
  419        /// Activates the pane to the right.
  420        ActivatePaneRight,
  421        /// Activates the pane above.
  422        ActivatePaneUp,
  423        /// Activates the pane below.
  424        ActivatePaneDown,
  425        /// Swaps the current pane with the one to the left.
  426        SwapPaneLeft,
  427        /// Swaps the current pane with the one to the right.
  428        SwapPaneRight,
  429        /// Swaps the current pane with the one above.
  430        SwapPaneUp,
  431        /// Swaps the current pane with the one below.
  432        SwapPaneDown,
  433        /// Move the current pane to be at the far left.
  434        MovePaneLeft,
  435        /// Move the current pane to be at the far right.
  436        MovePaneRight,
  437        /// Move the current pane to be at the very top.
  438        MovePaneUp,
  439        /// Move the current pane to be at the very bottom.
  440        MovePaneDown,
  441    ]
  442);
  443
  444#[derive(PartialEq, Eq, Debug)]
  445pub enum CloseIntent {
  446    /// Quit the program entirely.
  447    Quit,
  448    /// Close a window.
  449    CloseWindow,
  450    /// Replace the workspace in an existing window.
  451    ReplaceWindow,
  452}
  453
  454#[derive(Clone)]
  455pub struct Toast {
  456    id: NotificationId,
  457    msg: Cow<'static, str>,
  458    autohide: bool,
  459    on_click: Option<(Cow<'static, str>, Arc<dyn Fn(&mut Window, &mut App)>)>,
  460}
  461
  462impl Toast {
  463    pub fn new<I: Into<Cow<'static, str>>>(id: NotificationId, msg: I) -> Self {
  464        Toast {
  465            id,
  466            msg: msg.into(),
  467            on_click: None,
  468            autohide: false,
  469        }
  470    }
  471
  472    pub fn on_click<F, M>(mut self, message: M, on_click: F) -> Self
  473    where
  474        M: Into<Cow<'static, str>>,
  475        F: Fn(&mut Window, &mut App) + 'static,
  476    {
  477        self.on_click = Some((message.into(), Arc::new(on_click)));
  478        self
  479    }
  480
  481    pub fn autohide(mut self) -> Self {
  482        self.autohide = true;
  483        self
  484    }
  485}
  486
  487impl PartialEq for Toast {
  488    fn eq(&self, other: &Self) -> bool {
  489        self.id == other.id
  490            && self.msg == other.msg
  491            && self.on_click.is_some() == other.on_click.is_some()
  492    }
  493}
  494
  495/// Opens a new terminal with the specified working directory.
  496#[derive(Debug, Default, Clone, Deserialize, PartialEq, JsonSchema, Action)]
  497#[action(namespace = workspace)]
  498#[serde(deny_unknown_fields)]
  499pub struct OpenTerminal {
  500    pub working_directory: PathBuf,
  501}
  502
  503#[derive(Clone, Copy, Debug, Default, Hash, PartialEq, Eq, PartialOrd, Ord)]
  504pub struct WorkspaceId(i64);
  505
  506impl StaticColumnCount for WorkspaceId {}
  507impl Bind for WorkspaceId {
  508    fn bind(&self, statement: &Statement, start_index: i32) -> Result<i32> {
  509        self.0.bind(statement, start_index)
  510    }
  511}
  512impl Column for WorkspaceId {
  513    fn column(statement: &mut Statement, start_index: i32) -> Result<(Self, i32)> {
  514        i64::column(statement, start_index)
  515            .map(|(i, next_index)| (Self(i), next_index))
  516            .with_context(|| format!("Failed to read WorkspaceId at index {start_index}"))
  517    }
  518}
  519impl From<WorkspaceId> for i64 {
  520    fn from(val: WorkspaceId) -> Self {
  521        val.0
  522    }
  523}
  524
  525pub fn init_settings(cx: &mut App) {
  526    WorkspaceSettings::register(cx);
  527    ItemSettings::register(cx);
  528    PreviewTabsSettings::register(cx);
  529    TabBarSettings::register(cx);
  530    StatusBarSettings::register(cx);
  531}
  532
  533fn prompt_and_open_paths(app_state: Arc<AppState>, options: PathPromptOptions, cx: &mut App) {
  534    let paths = cx.prompt_for_paths(options);
  535    cx.spawn(
  536        async move |cx| match paths.await.anyhow().and_then(|res| res) {
  537            Ok(Some(paths)) => {
  538                cx.update(|cx| {
  539                    open_paths(&paths, app_state, OpenOptions::default(), cx).detach_and_log_err(cx)
  540                })
  541                .ok();
  542            }
  543            Ok(None) => {}
  544            Err(err) => {
  545                util::log_err(&err);
  546                cx.update(|cx| {
  547                    if let Some(workspace_window) = cx
  548                        .active_window()
  549                        .and_then(|window| window.downcast::<Workspace>())
  550                    {
  551                        workspace_window
  552                            .update(cx, |workspace, _, cx| {
  553                                workspace.show_portal_error(err.to_string(), cx);
  554                            })
  555                            .ok();
  556                    }
  557                })
  558                .ok();
  559            }
  560        },
  561    )
  562    .detach();
  563}
  564
  565pub fn init(app_state: Arc<AppState>, cx: &mut App) {
  566    init_settings(cx);
  567    component::init();
  568    theme_preview::init(cx);
  569    toast_layer::init(cx);
  570    history_manager::init(cx);
  571
  572    cx.on_action(|_: &CloseWindow, cx| Workspace::close_global(cx));
  573    cx.on_action(|_: &Reload, cx| reload(cx));
  574
  575    cx.on_action({
  576        let app_state = Arc::downgrade(&app_state);
  577        move |_: &Open, cx: &mut App| {
  578            if let Some(app_state) = app_state.upgrade() {
  579                prompt_and_open_paths(
  580                    app_state,
  581                    PathPromptOptions {
  582                        files: true,
  583                        directories: true,
  584                        multiple: true,
  585                        prompt: None,
  586                    },
  587                    cx,
  588                );
  589            }
  590        }
  591    });
  592    cx.on_action({
  593        let app_state = Arc::downgrade(&app_state);
  594        move |_: &OpenFiles, cx: &mut App| {
  595            let directories = cx.can_select_mixed_files_and_dirs();
  596            if let Some(app_state) = app_state.upgrade() {
  597                prompt_and_open_paths(
  598                    app_state,
  599                    PathPromptOptions {
  600                        files: true,
  601                        directories,
  602                        multiple: true,
  603                        prompt: None,
  604                    },
  605                    cx,
  606                );
  607            }
  608        }
  609    });
  610}
  611
  612type BuildProjectItemFn =
  613    fn(AnyEntity, Entity<Project>, Option<&Pane>, &mut Window, &mut App) -> Box<dyn ItemHandle>;
  614
  615type BuildProjectItemForPathFn =
  616    fn(
  617        &Entity<Project>,
  618        &ProjectPath,
  619        &mut Window,
  620        &mut App,
  621    ) -> Option<Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>>>;
  622
  623#[derive(Clone, Default)]
  624struct ProjectItemRegistry {
  625    build_project_item_fns_by_type: HashMap<TypeId, BuildProjectItemFn>,
  626    build_project_item_for_path_fns: Vec<BuildProjectItemForPathFn>,
  627}
  628
  629impl ProjectItemRegistry {
  630    fn register<T: ProjectItem>(&mut self) {
  631        self.build_project_item_fns_by_type.insert(
  632            TypeId::of::<T::Item>(),
  633            |item, project, pane, window, cx| {
  634                let item = item.downcast().unwrap();
  635                Box::new(cx.new(|cx| T::for_project_item(project, pane, item, window, cx)))
  636                    as Box<dyn ItemHandle>
  637            },
  638        );
  639        self.build_project_item_for_path_fns
  640            .push(|project, project_path, window, cx| {
  641                let project_path = project_path.clone();
  642                let is_file = project
  643                    .read(cx)
  644                    .entry_for_path(&project_path, cx)
  645                    .is_some_and(|entry| entry.is_file());
  646                let entry_abs_path = project.read(cx).absolute_path(&project_path, cx);
  647                let is_local = project.read(cx).is_local();
  648                let project_item =
  649                    <T::Item as project::ProjectItem>::try_open(project, &project_path, cx)?;
  650                let project = project.clone();
  651                Some(window.spawn(cx, async move |cx| {
  652                    match project_item.await.with_context(|| {
  653                        format!(
  654                            "opening project path {:?}",
  655                            entry_abs_path.as_deref().unwrap_or(&project_path.path.as_std_path())
  656                        )
  657                    }) {
  658                        Ok(project_item) => {
  659                            let project_item = project_item;
  660                            let project_entry_id: Option<ProjectEntryId> =
  661                                project_item.read_with(cx, project::ProjectItem::entry_id)?;
  662                            let build_workspace_item = Box::new(
  663                                |pane: &mut Pane, window: &mut Window, cx: &mut Context<Pane>| {
  664                                    Box::new(cx.new(|cx| {
  665                                        T::for_project_item(
  666                                            project,
  667                                            Some(pane),
  668                                            project_item,
  669                                            window,
  670                                            cx,
  671                                        )
  672                                    })) as Box<dyn ItemHandle>
  673                                },
  674                            ) as Box<_>;
  675                            Ok((project_entry_id, build_workspace_item))
  676                        }
  677                        Err(e) => {
  678                            if e.error_code() == ErrorCode::Internal {
  679                                if let Some(abs_path) =
  680                                    entry_abs_path.as_deref().filter(|_| is_file)
  681                                {
  682                                    if let Some(broken_project_item_view) =
  683                                        cx.update(|window, cx| {
  684                                            T::for_broken_project_item(
  685                                                abs_path, is_local, &e, window, cx,
  686                                            )
  687                                        })?
  688                                    {
  689                                        let build_workspace_item = Box::new(
  690                                            move |_: &mut Pane, _: &mut Window, cx: &mut Context<Pane>| {
  691                                                cx.new(|_| broken_project_item_view).boxed_clone()
  692                                            },
  693                                        )
  694                                        as Box<_>;
  695                                        return Ok((None, build_workspace_item));
  696                                    }
  697                                }
  698                            }
  699                            Err(e)
  700                        }
  701                    }
  702                }))
  703            });
  704    }
  705
  706    fn open_path(
  707        &self,
  708        project: &Entity<Project>,
  709        path: &ProjectPath,
  710        window: &mut Window,
  711        cx: &mut App,
  712    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
  713        let Some(open_project_item) = self
  714            .build_project_item_for_path_fns
  715            .iter()
  716            .rev()
  717            .find_map(|open_project_item| open_project_item(project, path, window, cx))
  718        else {
  719            return Task::ready(Err(anyhow!("cannot open file {:?}", path.path)));
  720        };
  721        open_project_item
  722    }
  723
  724    fn build_item<T: project::ProjectItem>(
  725        &self,
  726        item: Entity<T>,
  727        project: Entity<Project>,
  728        pane: Option<&Pane>,
  729        window: &mut Window,
  730        cx: &mut App,
  731    ) -> Option<Box<dyn ItemHandle>> {
  732        let build = self
  733            .build_project_item_fns_by_type
  734            .get(&TypeId::of::<T>())?;
  735        Some(build(item.into_any(), project, pane, window, cx))
  736    }
  737}
  738
  739type WorkspaceItemBuilder =
  740    Box<dyn FnOnce(&mut Pane, &mut Window, &mut Context<Pane>) -> Box<dyn ItemHandle>>;
  741
  742impl Global for ProjectItemRegistry {}
  743
  744/// Registers a [ProjectItem] for the app. When opening a file, all the registered
  745/// items will get a chance to open the file, starting from the project item that
  746/// was added last.
  747pub fn register_project_item<I: ProjectItem>(cx: &mut App) {
  748    cx.default_global::<ProjectItemRegistry>().register::<I>();
  749}
  750
  751#[derive(Default)]
  752pub struct FollowableViewRegistry(HashMap<TypeId, FollowableViewDescriptor>);
  753
  754struct FollowableViewDescriptor {
  755    from_state_proto: fn(
  756        Entity<Workspace>,
  757        ViewId,
  758        &mut Option<proto::view::Variant>,
  759        &mut Window,
  760        &mut App,
  761    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>>,
  762    to_followable_view: fn(&AnyView) -> Box<dyn FollowableItemHandle>,
  763}
  764
  765impl Global for FollowableViewRegistry {}
  766
  767impl FollowableViewRegistry {
  768    pub fn register<I: FollowableItem>(cx: &mut App) {
  769        cx.default_global::<Self>().0.insert(
  770            TypeId::of::<I>(),
  771            FollowableViewDescriptor {
  772                from_state_proto: |workspace, id, state, window, cx| {
  773                    I::from_state_proto(workspace, id, state, window, cx).map(|task| {
  774                        cx.foreground_executor()
  775                            .spawn(async move { Ok(Box::new(task.await?) as Box<_>) })
  776                    })
  777                },
  778                to_followable_view: |view| Box::new(view.clone().downcast::<I>().unwrap()),
  779            },
  780        );
  781    }
  782
  783    pub fn from_state_proto(
  784        workspace: Entity<Workspace>,
  785        view_id: ViewId,
  786        mut state: Option<proto::view::Variant>,
  787        window: &mut Window,
  788        cx: &mut App,
  789    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>> {
  790        cx.update_default_global(|this: &mut Self, cx| {
  791            this.0.values().find_map(|descriptor| {
  792                (descriptor.from_state_proto)(workspace.clone(), view_id, &mut state, window, cx)
  793            })
  794        })
  795    }
  796
  797    pub fn to_followable_view(
  798        view: impl Into<AnyView>,
  799        cx: &App,
  800    ) -> Option<Box<dyn FollowableItemHandle>> {
  801        let this = cx.try_global::<Self>()?;
  802        let view = view.into();
  803        let descriptor = this.0.get(&view.entity_type())?;
  804        Some((descriptor.to_followable_view)(&view))
  805    }
  806}
  807
  808#[derive(Copy, Clone)]
  809struct SerializableItemDescriptor {
  810    deserialize: fn(
  811        Entity<Project>,
  812        WeakEntity<Workspace>,
  813        WorkspaceId,
  814        ItemId,
  815        &mut Window,
  816        &mut Context<Pane>,
  817    ) -> Task<Result<Box<dyn ItemHandle>>>,
  818    cleanup: fn(WorkspaceId, Vec<ItemId>, &mut Window, &mut App) -> Task<Result<()>>,
  819    view_to_serializable_item: fn(AnyView) -> Box<dyn SerializableItemHandle>,
  820}
  821
  822#[derive(Default)]
  823struct SerializableItemRegistry {
  824    descriptors_by_kind: HashMap<Arc<str>, SerializableItemDescriptor>,
  825    descriptors_by_type: HashMap<TypeId, SerializableItemDescriptor>,
  826}
  827
  828impl Global for SerializableItemRegistry {}
  829
  830impl SerializableItemRegistry {
  831    fn deserialize(
  832        item_kind: &str,
  833        project: Entity<Project>,
  834        workspace: WeakEntity<Workspace>,
  835        workspace_id: WorkspaceId,
  836        item_item: ItemId,
  837        window: &mut Window,
  838        cx: &mut Context<Pane>,
  839    ) -> Task<Result<Box<dyn ItemHandle>>> {
  840        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  841            return Task::ready(Err(anyhow!(
  842                "cannot deserialize {}, descriptor not found",
  843                item_kind
  844            )));
  845        };
  846
  847        (descriptor.deserialize)(project, workspace, workspace_id, item_item, window, cx)
  848    }
  849
  850    fn cleanup(
  851        item_kind: &str,
  852        workspace_id: WorkspaceId,
  853        loaded_items: Vec<ItemId>,
  854        window: &mut Window,
  855        cx: &mut App,
  856    ) -> Task<Result<()>> {
  857        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  858            return Task::ready(Err(anyhow!(
  859                "cannot cleanup {}, descriptor not found",
  860                item_kind
  861            )));
  862        };
  863
  864        (descriptor.cleanup)(workspace_id, loaded_items, window, cx)
  865    }
  866
  867    fn view_to_serializable_item_handle(
  868        view: AnyView,
  869        cx: &App,
  870    ) -> Option<Box<dyn SerializableItemHandle>> {
  871        let this = cx.try_global::<Self>()?;
  872        let descriptor = this.descriptors_by_type.get(&view.entity_type())?;
  873        Some((descriptor.view_to_serializable_item)(view))
  874    }
  875
  876    fn descriptor(item_kind: &str, cx: &App) -> Option<SerializableItemDescriptor> {
  877        let this = cx.try_global::<Self>()?;
  878        this.descriptors_by_kind.get(item_kind).copied()
  879    }
  880}
  881
  882pub fn register_serializable_item<I: SerializableItem>(cx: &mut App) {
  883    let serialized_item_kind = I::serialized_item_kind();
  884
  885    let registry = cx.default_global::<SerializableItemRegistry>();
  886    let descriptor = SerializableItemDescriptor {
  887        deserialize: |project, workspace, workspace_id, item_id, window, cx| {
  888            let task = I::deserialize(project, workspace, workspace_id, item_id, window, cx);
  889            cx.foreground_executor()
  890                .spawn(async { Ok(Box::new(task.await?) as Box<_>) })
  891        },
  892        cleanup: |workspace_id, loaded_items, window, cx| {
  893            I::cleanup(workspace_id, loaded_items, window, cx)
  894        },
  895        view_to_serializable_item: |view| Box::new(view.downcast::<I>().unwrap()),
  896    };
  897    registry
  898        .descriptors_by_kind
  899        .insert(Arc::from(serialized_item_kind), descriptor);
  900    registry
  901        .descriptors_by_type
  902        .insert(TypeId::of::<I>(), descriptor);
  903}
  904
  905pub struct AppState {
  906    pub languages: Arc<LanguageRegistry>,
  907    pub client: Arc<Client>,
  908    pub user_store: Entity<UserStore>,
  909    pub workspace_store: Entity<WorkspaceStore>,
  910    pub fs: Arc<dyn fs::Fs>,
  911    pub build_window_options: fn(Option<Uuid>, &mut App) -> WindowOptions,
  912    pub node_runtime: NodeRuntime,
  913    pub session: Entity<AppSession>,
  914}
  915
  916struct GlobalAppState(Weak<AppState>);
  917
  918impl Global for GlobalAppState {}
  919
  920pub struct WorkspaceStore {
  921    workspaces: HashSet<WindowHandle<Workspace>>,
  922    client: Arc<Client>,
  923    _subscriptions: Vec<client::Subscription>,
  924}
  925
  926#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq, PartialOrd, Ord)]
  927pub enum CollaboratorId {
  928    PeerId(PeerId),
  929    Agent,
  930}
  931
  932impl From<PeerId> for CollaboratorId {
  933    fn from(peer_id: PeerId) -> Self {
  934        CollaboratorId::PeerId(peer_id)
  935    }
  936}
  937
  938impl From<&PeerId> for CollaboratorId {
  939    fn from(peer_id: &PeerId) -> Self {
  940        CollaboratorId::PeerId(*peer_id)
  941    }
  942}
  943
  944#[derive(PartialEq, Eq, PartialOrd, Ord, Debug)]
  945struct Follower {
  946    project_id: Option<u64>,
  947    peer_id: PeerId,
  948}
  949
  950impl AppState {
  951    #[track_caller]
  952    pub fn global(cx: &App) -> Weak<Self> {
  953        cx.global::<GlobalAppState>().0.clone()
  954    }
  955    pub fn try_global(cx: &App) -> Option<Weak<Self>> {
  956        cx.try_global::<GlobalAppState>()
  957            .map(|state| state.0.clone())
  958    }
  959    pub fn set_global(state: Weak<AppState>, cx: &mut App) {
  960        cx.set_global(GlobalAppState(state));
  961    }
  962
  963    #[cfg(any(test, feature = "test-support"))]
  964    pub fn test(cx: &mut App) -> Arc<Self> {
  965        use node_runtime::NodeRuntime;
  966        use session::Session;
  967        use settings::SettingsStore;
  968
  969        if !cx.has_global::<SettingsStore>() {
  970            let settings_store = SettingsStore::test(cx);
  971            cx.set_global(settings_store);
  972        }
  973
  974        let fs = fs::FakeFs::new(cx.background_executor().clone());
  975        let languages = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));
  976        let clock = Arc::new(clock::FakeSystemClock::new());
  977        let http_client = http_client::FakeHttpClient::with_404_response();
  978        let client = Client::new(clock, http_client, cx);
  979        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
  980        let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
  981        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
  982
  983        theme::init(theme::LoadThemes::JustBase, cx);
  984        client::init(&client, cx);
  985        crate::init_settings(cx);
  986
  987        Arc::new(Self {
  988            client,
  989            fs,
  990            languages,
  991            user_store,
  992            workspace_store,
  993            node_runtime: NodeRuntime::unavailable(),
  994            build_window_options: |_, _| Default::default(),
  995            session,
  996        })
  997    }
  998}
  999
 1000struct DelayedDebouncedEditAction {
 1001    task: Option<Task<()>>,
 1002    cancel_channel: Option<oneshot::Sender<()>>,
 1003}
 1004
 1005impl DelayedDebouncedEditAction {
 1006    fn new() -> DelayedDebouncedEditAction {
 1007        DelayedDebouncedEditAction {
 1008            task: None,
 1009            cancel_channel: None,
 1010        }
 1011    }
 1012
 1013    fn fire_new<F>(
 1014        &mut self,
 1015        delay: Duration,
 1016        window: &mut Window,
 1017        cx: &mut Context<Workspace>,
 1018        func: F,
 1019    ) where
 1020        F: 'static
 1021            + Send
 1022            + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> Task<Result<()>>,
 1023    {
 1024        if let Some(channel) = self.cancel_channel.take() {
 1025            _ = channel.send(());
 1026        }
 1027
 1028        let (sender, mut receiver) = oneshot::channel::<()>();
 1029        self.cancel_channel = Some(sender);
 1030
 1031        let previous_task = self.task.take();
 1032        self.task = Some(cx.spawn_in(window, async move |workspace, cx| {
 1033            let mut timer = cx.background_executor().timer(delay).fuse();
 1034            if let Some(previous_task) = previous_task {
 1035                previous_task.await;
 1036            }
 1037
 1038            futures::select_biased! {
 1039                _ = receiver => return,
 1040                    _ = timer => {}
 1041            }
 1042
 1043            if let Some(result) = workspace
 1044                .update_in(cx, |workspace, window, cx| (func)(workspace, window, cx))
 1045                .log_err()
 1046            {
 1047                result.await.log_err();
 1048            }
 1049        }));
 1050    }
 1051}
 1052
 1053pub enum Event {
 1054    PaneAdded(Entity<Pane>),
 1055    PaneRemoved,
 1056    ItemAdded {
 1057        item: Box<dyn ItemHandle>,
 1058    },
 1059    ActiveItemChanged,
 1060    ItemRemoved {
 1061        item_id: EntityId,
 1062    },
 1063    UserSavedItem {
 1064        pane: WeakEntity<Pane>,
 1065        item: Box<dyn WeakItemHandle>,
 1066        save_intent: SaveIntent,
 1067    },
 1068    ContactRequestedJoin(u64),
 1069    WorkspaceCreated(WeakEntity<Workspace>),
 1070    OpenBundledFile {
 1071        text: Cow<'static, str>,
 1072        title: &'static str,
 1073        language: &'static str,
 1074    },
 1075    ZoomChanged,
 1076    ModalOpened,
 1077}
 1078
 1079#[derive(Debug)]
 1080pub enum OpenVisible {
 1081    All,
 1082    None,
 1083    OnlyFiles,
 1084    OnlyDirectories,
 1085}
 1086
 1087enum WorkspaceLocation {
 1088    // Valid local paths or SSH project to serialize
 1089    Location(SerializedWorkspaceLocation, PathList),
 1090    // No valid location found hence clear session id
 1091    DetachFromSession,
 1092    // No valid location found to serialize
 1093    None,
 1094}
 1095
 1096type PromptForNewPath = Box<
 1097    dyn Fn(
 1098        &mut Workspace,
 1099        DirectoryLister,
 1100        &mut Window,
 1101        &mut Context<Workspace>,
 1102    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1103>;
 1104
 1105type PromptForOpenPath = Box<
 1106    dyn Fn(
 1107        &mut Workspace,
 1108        DirectoryLister,
 1109        &mut Window,
 1110        &mut Context<Workspace>,
 1111    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1112>;
 1113
 1114#[derive(Default)]
 1115struct DispatchingKeystrokes {
 1116    dispatched: HashSet<Vec<Keystroke>>,
 1117    queue: VecDeque<Keystroke>,
 1118    task: Option<Shared<Task<()>>>,
 1119}
 1120
 1121/// Collects everything project-related for a certain window opened.
 1122/// In some way, is a counterpart of a window, as the [`WindowHandle`] could be downcast into `Workspace`.
 1123///
 1124/// A `Workspace` usually consists of 1 or more projects, a central pane group, 3 docks and a status bar.
 1125/// The `Workspace` owns everybody's state and serves as a default, "global context",
 1126/// that can be used to register a global action to be triggered from any place in the window.
 1127pub struct Workspace {
 1128    weak_self: WeakEntity<Self>,
 1129    workspace_actions: Vec<Box<dyn Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div>>,
 1130    zoomed: Option<AnyWeakView>,
 1131    previous_dock_drag_coordinates: Option<Point<Pixels>>,
 1132    zoomed_position: Option<DockPosition>,
 1133    center: PaneGroup,
 1134    left_dock: Entity<Dock>,
 1135    bottom_dock: Entity<Dock>,
 1136    right_dock: Entity<Dock>,
 1137    panes: Vec<Entity<Pane>>,
 1138    panes_by_item: HashMap<EntityId, WeakEntity<Pane>>,
 1139    active_pane: Entity<Pane>,
 1140    last_active_center_pane: Option<WeakEntity<Pane>>,
 1141    last_active_view_id: Option<proto::ViewId>,
 1142    status_bar: Entity<StatusBar>,
 1143    modal_layer: Entity<ModalLayer>,
 1144    toast_layer: Entity<ToastLayer>,
 1145    titlebar_item: Option<AnyView>,
 1146    notifications: Notifications,
 1147    suppressed_notifications: HashSet<NotificationId>,
 1148    project: Entity<Project>,
 1149    follower_states: HashMap<CollaboratorId, FollowerState>,
 1150    last_leaders_by_pane: HashMap<WeakEntity<Pane>, CollaboratorId>,
 1151    window_edited: bool,
 1152    last_window_title: Option<String>,
 1153    dirty_items: HashMap<EntityId, Subscription>,
 1154    active_call: Option<(Entity<ActiveCall>, Vec<Subscription>)>,
 1155    leader_updates_tx: mpsc::UnboundedSender<(PeerId, proto::UpdateFollowers)>,
 1156    database_id: Option<WorkspaceId>,
 1157    app_state: Arc<AppState>,
 1158    dispatching_keystrokes: Rc<RefCell<DispatchingKeystrokes>>,
 1159    _subscriptions: Vec<Subscription>,
 1160    _apply_leader_updates: Task<Result<()>>,
 1161    _observe_current_user: Task<Result<()>>,
 1162    _schedule_serialize_workspace: Option<Task<()>>,
 1163    _schedule_serialize_ssh_paths: Option<Task<()>>,
 1164    pane_history_timestamp: Arc<AtomicUsize>,
 1165    bounds: Bounds<Pixels>,
 1166    pub centered_layout: bool,
 1167    bounds_save_task_queued: Option<Task<()>>,
 1168    on_prompt_for_new_path: Option<PromptForNewPath>,
 1169    on_prompt_for_open_path: Option<PromptForOpenPath>,
 1170    terminal_provider: Option<Box<dyn TerminalProvider>>,
 1171    debugger_provider: Option<Arc<dyn DebuggerProvider>>,
 1172    serializable_items_tx: UnboundedSender<Box<dyn SerializableItemHandle>>,
 1173    _items_serializer: Task<Result<()>>,
 1174    session_id: Option<String>,
 1175    scheduled_tasks: Vec<Task<()>>,
 1176}
 1177
 1178impl EventEmitter<Event> for Workspace {}
 1179
 1180#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
 1181pub struct ViewId {
 1182    pub creator: CollaboratorId,
 1183    pub id: u64,
 1184}
 1185
 1186pub struct FollowerState {
 1187    center_pane: Entity<Pane>,
 1188    dock_pane: Option<Entity<Pane>>,
 1189    active_view_id: Option<ViewId>,
 1190    items_by_leader_view_id: HashMap<ViewId, FollowerView>,
 1191}
 1192
 1193struct FollowerView {
 1194    view: Box<dyn FollowableItemHandle>,
 1195    location: Option<proto::PanelId>,
 1196}
 1197
 1198impl Workspace {
 1199    const DEFAULT_PADDING: f32 = 0.2;
 1200    const MAX_PADDING: f32 = 0.4;
 1201
 1202    pub fn new(
 1203        workspace_id: Option<WorkspaceId>,
 1204        project: Entity<Project>,
 1205        app_state: Arc<AppState>,
 1206        window: &mut Window,
 1207        cx: &mut Context<Self>,
 1208    ) -> Self {
 1209        cx.subscribe_in(&project, window, move |this, _, event, window, cx| {
 1210            match event {
 1211                project::Event::RemoteIdChanged(_) => {
 1212                    this.update_window_title(window, cx);
 1213                }
 1214
 1215                project::Event::CollaboratorLeft(peer_id) => {
 1216                    this.collaborator_left(*peer_id, window, cx);
 1217                }
 1218
 1219                project::Event::WorktreeRemoved(_) | project::Event::WorktreeAdded(_) => {
 1220                    this.update_window_title(window, cx);
 1221                    this.serialize_workspace(window, cx);
 1222                    // This event could be triggered by `AddFolderToProject` or `RemoveFromProject`.
 1223                    this.update_history(cx);
 1224                }
 1225
 1226                project::Event::DisconnectedFromHost => {
 1227                    this.update_window_edited(window, cx);
 1228                    let leaders_to_unfollow =
 1229                        this.follower_states.keys().copied().collect::<Vec<_>>();
 1230                    for leader_id in leaders_to_unfollow {
 1231                        this.unfollow(leader_id, window, cx);
 1232                    }
 1233                }
 1234
 1235                project::Event::DisconnectedFromSshRemote => {
 1236                    this.update_window_edited(window, cx);
 1237                }
 1238
 1239                project::Event::Closed => {
 1240                    window.remove_window();
 1241                }
 1242
 1243                project::Event::DeletedEntry(_, entry_id) => {
 1244                    for pane in this.panes.iter() {
 1245                        pane.update(cx, |pane, cx| {
 1246                            pane.handle_deleted_project_item(*entry_id, window, cx)
 1247                        });
 1248                    }
 1249                }
 1250
 1251                project::Event::Toast {
 1252                    notification_id,
 1253                    message,
 1254                } => this.show_notification(
 1255                    NotificationId::named(notification_id.clone()),
 1256                    cx,
 1257                    |cx| cx.new(|cx| MessageNotification::new(message.clone(), cx)),
 1258                ),
 1259
 1260                project::Event::HideToast { notification_id } => {
 1261                    this.dismiss_notification(&NotificationId::named(notification_id.clone()), cx)
 1262                }
 1263
 1264                project::Event::LanguageServerPrompt(request) => {
 1265                    struct LanguageServerPrompt;
 1266
 1267                    let mut hasher = DefaultHasher::new();
 1268                    request.lsp_name.as_str().hash(&mut hasher);
 1269                    let id = hasher.finish();
 1270
 1271                    this.show_notification(
 1272                        NotificationId::composite::<LanguageServerPrompt>(id as usize),
 1273                        cx,
 1274                        |cx| {
 1275                            cx.new(|cx| {
 1276                                notifications::LanguageServerPrompt::new(request.clone(), cx)
 1277                            })
 1278                        },
 1279                    );
 1280                }
 1281
 1282                project::Event::AgentLocationChanged => {
 1283                    this.handle_agent_location_changed(window, cx)
 1284                }
 1285
 1286                _ => {}
 1287            }
 1288            cx.notify()
 1289        })
 1290        .detach();
 1291
 1292        cx.subscribe_in(
 1293            &project.read(cx).breakpoint_store(),
 1294            window,
 1295            |workspace, _, event, window, cx| match event {
 1296                BreakpointStoreEvent::BreakpointsUpdated(_, _)
 1297                | BreakpointStoreEvent::BreakpointsCleared(_) => {
 1298                    workspace.serialize_workspace(window, cx);
 1299                }
 1300                BreakpointStoreEvent::SetDebugLine | BreakpointStoreEvent::ClearDebugLines => {}
 1301            },
 1302        )
 1303        .detach();
 1304        if let Some(toolchain_store) = project.read(cx).toolchain_store() {
 1305            cx.subscribe_in(
 1306                &toolchain_store,
 1307                window,
 1308                |workspace, _, event, window, cx| match event {
 1309                    ToolchainStoreEvent::CustomToolchainsModified => {
 1310                        workspace.serialize_workspace(window, cx);
 1311                    }
 1312                    _ => {}
 1313                },
 1314            )
 1315            .detach();
 1316        }
 1317
 1318        cx.on_focus_lost(window, |this, window, cx| {
 1319            let focus_handle = this.focus_handle(cx);
 1320            window.focus(&focus_handle);
 1321        })
 1322        .detach();
 1323
 1324        let weak_handle = cx.entity().downgrade();
 1325        let pane_history_timestamp = Arc::new(AtomicUsize::new(0));
 1326
 1327        let center_pane = cx.new(|cx| {
 1328            let mut center_pane = Pane::new(
 1329                weak_handle.clone(),
 1330                project.clone(),
 1331                pane_history_timestamp.clone(),
 1332                None,
 1333                NewFile.boxed_clone(),
 1334                true,
 1335                window,
 1336                cx,
 1337            );
 1338            center_pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 1339            center_pane
 1340        });
 1341        cx.subscribe_in(&center_pane, window, Self::handle_pane_event)
 1342            .detach();
 1343
 1344        window.focus(&center_pane.focus_handle(cx));
 1345
 1346        cx.emit(Event::PaneAdded(center_pane.clone()));
 1347
 1348        let window_handle = window.window_handle().downcast::<Workspace>().unwrap();
 1349        app_state.workspace_store.update(cx, |store, _| {
 1350            store.workspaces.insert(window_handle);
 1351        });
 1352
 1353        let mut current_user = app_state.user_store.read(cx).watch_current_user();
 1354        let mut connection_status = app_state.client.status();
 1355        let _observe_current_user = cx.spawn_in(window, async move |this, cx| {
 1356            current_user.next().await;
 1357            connection_status.next().await;
 1358            let mut stream =
 1359                Stream::map(current_user, drop).merge(Stream::map(connection_status, drop));
 1360
 1361            while stream.recv().await.is_some() {
 1362                this.update(cx, |_, cx| cx.notify())?;
 1363            }
 1364            anyhow::Ok(())
 1365        });
 1366
 1367        // All leader updates are enqueued and then processed in a single task, so
 1368        // that each asynchronous operation can be run in order.
 1369        let (leader_updates_tx, mut leader_updates_rx) =
 1370            mpsc::unbounded::<(PeerId, proto::UpdateFollowers)>();
 1371        let _apply_leader_updates = cx.spawn_in(window, async move |this, cx| {
 1372            while let Some((leader_id, update)) = leader_updates_rx.next().await {
 1373                Self::process_leader_update(&this, leader_id, update, cx)
 1374                    .await
 1375                    .log_err();
 1376            }
 1377
 1378            Ok(())
 1379        });
 1380
 1381        cx.emit(Event::WorkspaceCreated(weak_handle.clone()));
 1382        let modal_layer = cx.new(|_| ModalLayer::new());
 1383        let toast_layer = cx.new(|_| ToastLayer::new());
 1384        cx.subscribe(
 1385            &modal_layer,
 1386            |_, _, _: &modal_layer::ModalOpenedEvent, cx| {
 1387                cx.emit(Event::ModalOpened);
 1388            },
 1389        )
 1390        .detach();
 1391
 1392        let left_dock = Dock::new(DockPosition::Left, modal_layer.clone(), window, cx);
 1393        let bottom_dock = Dock::new(DockPosition::Bottom, modal_layer.clone(), window, cx);
 1394        let right_dock = Dock::new(DockPosition::Right, modal_layer.clone(), window, cx);
 1395        let left_dock_buttons = cx.new(|cx| PanelButtons::new(left_dock.clone(), cx));
 1396        let bottom_dock_buttons = cx.new(|cx| PanelButtons::new(bottom_dock.clone(), cx));
 1397        let right_dock_buttons = cx.new(|cx| PanelButtons::new(right_dock.clone(), cx));
 1398        let status_bar = cx.new(|cx| {
 1399            let mut status_bar = StatusBar::new(&center_pane.clone(), window, cx);
 1400            status_bar.add_left_item(left_dock_buttons, window, cx);
 1401            status_bar.add_right_item(right_dock_buttons, window, cx);
 1402            status_bar.add_right_item(bottom_dock_buttons, window, cx);
 1403            status_bar
 1404        });
 1405
 1406        let session_id = app_state.session.read(cx).id().to_owned();
 1407
 1408        let mut active_call = None;
 1409        if let Some(call) = ActiveCall::try_global(cx) {
 1410            let subscriptions = vec![cx.subscribe_in(&call, window, Self::on_active_call_event)];
 1411            active_call = Some((call, subscriptions));
 1412        }
 1413
 1414        let (serializable_items_tx, serializable_items_rx) =
 1415            mpsc::unbounded::<Box<dyn SerializableItemHandle>>();
 1416        let _items_serializer = cx.spawn_in(window, async move |this, cx| {
 1417            Self::serialize_items(&this, serializable_items_rx, cx).await
 1418        });
 1419
 1420        let subscriptions = vec![
 1421            cx.observe_window_activation(window, Self::on_window_activation_changed),
 1422            cx.observe_window_bounds(window, move |this, window, cx| {
 1423                if this.bounds_save_task_queued.is_some() {
 1424                    return;
 1425                }
 1426                this.bounds_save_task_queued = Some(cx.spawn_in(window, async move |this, cx| {
 1427                    cx.background_executor()
 1428                        .timer(Duration::from_millis(100))
 1429                        .await;
 1430                    this.update_in(cx, |this, window, cx| {
 1431                        if let Some(display) = window.display(cx)
 1432                            && let Ok(display_uuid) = display.uuid()
 1433                        {
 1434                            let window_bounds = window.inner_window_bounds();
 1435                            if let Some(database_id) = workspace_id {
 1436                                cx.background_executor()
 1437                                    .spawn(DB.set_window_open_status(
 1438                                        database_id,
 1439                                        SerializedWindowBounds(window_bounds),
 1440                                        display_uuid,
 1441                                    ))
 1442                                    .detach_and_log_err(cx);
 1443                            }
 1444                        }
 1445                        this.bounds_save_task_queued.take();
 1446                    })
 1447                    .ok();
 1448                }));
 1449                cx.notify();
 1450            }),
 1451            cx.observe_window_appearance(window, |_, window, cx| {
 1452                let window_appearance = window.appearance();
 1453
 1454                *SystemAppearance::global_mut(cx) = SystemAppearance(window_appearance.into());
 1455
 1456                GlobalTheme::reload_theme(cx);
 1457                GlobalTheme::reload_icon_theme(cx);
 1458            }),
 1459            cx.on_release(move |this, cx| {
 1460                this.app_state.workspace_store.update(cx, move |store, _| {
 1461                    store.workspaces.remove(&window_handle.clone());
 1462                })
 1463            }),
 1464        ];
 1465
 1466        cx.defer_in(window, |this, window, cx| {
 1467            this.update_window_title(window, cx);
 1468            this.show_initial_notifications(cx);
 1469        });
 1470        Workspace {
 1471            weak_self: weak_handle.clone(),
 1472            zoomed: None,
 1473            zoomed_position: None,
 1474            previous_dock_drag_coordinates: None,
 1475            center: PaneGroup::new(center_pane.clone()),
 1476            panes: vec![center_pane.clone()],
 1477            panes_by_item: Default::default(),
 1478            active_pane: center_pane.clone(),
 1479            last_active_center_pane: Some(center_pane.downgrade()),
 1480            last_active_view_id: None,
 1481            status_bar,
 1482            modal_layer,
 1483            toast_layer,
 1484            titlebar_item: None,
 1485            notifications: Notifications::default(),
 1486            suppressed_notifications: HashSet::default(),
 1487            left_dock,
 1488            bottom_dock,
 1489            right_dock,
 1490            project: project.clone(),
 1491            follower_states: Default::default(),
 1492            last_leaders_by_pane: Default::default(),
 1493            dispatching_keystrokes: Default::default(),
 1494            window_edited: false,
 1495            last_window_title: None,
 1496            dirty_items: Default::default(),
 1497            active_call,
 1498            database_id: workspace_id,
 1499            app_state,
 1500            _observe_current_user,
 1501            _apply_leader_updates,
 1502            _schedule_serialize_workspace: None,
 1503            _schedule_serialize_ssh_paths: None,
 1504            leader_updates_tx,
 1505            _subscriptions: subscriptions,
 1506            pane_history_timestamp,
 1507            workspace_actions: Default::default(),
 1508            // This data will be incorrect, but it will be overwritten by the time it needs to be used.
 1509            bounds: Default::default(),
 1510            centered_layout: false,
 1511            bounds_save_task_queued: None,
 1512            on_prompt_for_new_path: None,
 1513            on_prompt_for_open_path: None,
 1514            terminal_provider: None,
 1515            debugger_provider: None,
 1516            serializable_items_tx,
 1517            _items_serializer,
 1518            session_id: Some(session_id),
 1519
 1520            scheduled_tasks: Vec::new(),
 1521        }
 1522    }
 1523
 1524    pub fn new_local(
 1525        abs_paths: Vec<PathBuf>,
 1526        app_state: Arc<AppState>,
 1527        requesting_window: Option<WindowHandle<Workspace>>,
 1528        env: Option<HashMap<String, String>>,
 1529        cx: &mut App,
 1530    ) -> Task<
 1531        anyhow::Result<(
 1532            WindowHandle<Workspace>,
 1533            Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 1534        )>,
 1535    > {
 1536        let project_handle = Project::local(
 1537            app_state.client.clone(),
 1538            app_state.node_runtime.clone(),
 1539            app_state.user_store.clone(),
 1540            app_state.languages.clone(),
 1541            app_state.fs.clone(),
 1542            env,
 1543            cx,
 1544        );
 1545
 1546        cx.spawn(async move |cx| {
 1547            let mut paths_to_open = Vec::with_capacity(abs_paths.len());
 1548            for path in abs_paths.into_iter() {
 1549                if let Some(canonical) = app_state.fs.canonicalize(&path).await.ok() {
 1550                    paths_to_open.push(canonical)
 1551                } else {
 1552                    paths_to_open.push(path)
 1553                }
 1554            }
 1555
 1556            let serialized_workspace =
 1557                persistence::DB.workspace_for_roots(paths_to_open.as_slice());
 1558
 1559            if let Some(paths) = serialized_workspace.as_ref().map(|ws| &ws.paths) {
 1560                paths_to_open = paths.ordered_paths().cloned().collect();
 1561                if !paths.is_lexicographically_ordered() {
 1562                    project_handle
 1563                        .update(cx, |project, cx| {
 1564                            project.set_worktrees_reordered(true, cx);
 1565                        })
 1566                        .log_err();
 1567                }
 1568            }
 1569
 1570            // Get project paths for all of the abs_paths
 1571            let mut project_paths: Vec<(PathBuf, Option<ProjectPath>)> =
 1572                Vec::with_capacity(paths_to_open.len());
 1573
 1574            for path in paths_to_open.into_iter() {
 1575                if let Some((_, project_entry)) = cx
 1576                    .update(|cx| {
 1577                        Workspace::project_path_for_path(project_handle.clone(), &path, true, cx)
 1578                    })?
 1579                    .await
 1580                    .log_err()
 1581                {
 1582                    project_paths.push((path, Some(project_entry)));
 1583                } else {
 1584                    project_paths.push((path, None));
 1585                }
 1586            }
 1587
 1588            let workspace_id = if let Some(serialized_workspace) = serialized_workspace.as_ref() {
 1589                serialized_workspace.id
 1590            } else {
 1591                DB.next_id().await.unwrap_or_else(|_| Default::default())
 1592            };
 1593
 1594            let toolchains = DB.toolchains(workspace_id).await?;
 1595
 1596            for (toolchain, worktree_id, path) in toolchains {
 1597                let toolchain_path = PathBuf::from(toolchain.path.clone().to_string());
 1598                if !app_state.fs.is_file(toolchain_path.as_path()).await {
 1599                    continue;
 1600                }
 1601
 1602                project_handle
 1603                    .update(cx, |this, cx| {
 1604                        this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 1605                    })?
 1606                    .await;
 1607            }
 1608            if let Some(workspace) = serialized_workspace.as_ref() {
 1609                project_handle.update(cx, |this, cx| {
 1610                    for (scope, toolchains) in &workspace.user_toolchains {
 1611                        for toolchain in toolchains {
 1612                            this.add_toolchain(toolchain.clone(), scope.clone(), cx);
 1613                        }
 1614                    }
 1615                })?;
 1616            }
 1617
 1618            let window = if let Some(window) = requesting_window {
 1619                let centered_layout = serialized_workspace
 1620                    .as_ref()
 1621                    .map(|w| w.centered_layout)
 1622                    .unwrap_or(false);
 1623
 1624                cx.update_window(window.into(), |_, window, cx| {
 1625                    window.replace_root(cx, |window, cx| {
 1626                        let mut workspace = Workspace::new(
 1627                            Some(workspace_id),
 1628                            project_handle.clone(),
 1629                            app_state.clone(),
 1630                            window,
 1631                            cx,
 1632                        );
 1633
 1634                        workspace.centered_layout = centered_layout;
 1635                        workspace
 1636                    });
 1637                })?;
 1638                window
 1639            } else {
 1640                let window_bounds_override = window_bounds_env_override();
 1641
 1642                let (window_bounds, display) = if let Some(bounds) = window_bounds_override {
 1643                    (Some(WindowBounds::Windowed(bounds)), None)
 1644                } else {
 1645                    let restorable_bounds = serialized_workspace
 1646                        .as_ref()
 1647                        .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 1648                        .or_else(|| {
 1649                            let (display, window_bounds) = DB.last_window().log_err()?;
 1650                            Some((display?, window_bounds?))
 1651                        });
 1652
 1653                    if let Some((serialized_display, serialized_status)) = restorable_bounds {
 1654                        (Some(serialized_status.0), Some(serialized_display))
 1655                    } else {
 1656                        (None, None)
 1657                    }
 1658                };
 1659
 1660                // Use the serialized workspace to construct the new window
 1661                let mut options = cx.update(|cx| (app_state.build_window_options)(display, cx))?;
 1662                options.window_bounds = window_bounds;
 1663                let centered_layout = serialized_workspace
 1664                    .as_ref()
 1665                    .map(|w| w.centered_layout)
 1666                    .unwrap_or(false);
 1667                cx.open_window(options, {
 1668                    let app_state = app_state.clone();
 1669                    let project_handle = project_handle.clone();
 1670                    move |window, cx| {
 1671                        cx.new(|cx| {
 1672                            let mut workspace = Workspace::new(
 1673                                Some(workspace_id),
 1674                                project_handle,
 1675                                app_state,
 1676                                window,
 1677                                cx,
 1678                            );
 1679                            workspace.centered_layout = centered_layout;
 1680                            workspace
 1681                        })
 1682                    }
 1683                })?
 1684            };
 1685
 1686            notify_if_database_failed(window, cx);
 1687            let opened_items = window
 1688                .update(cx, |_workspace, window, cx| {
 1689                    open_items(serialized_workspace, project_paths, window, cx)
 1690                })?
 1691                .await
 1692                .unwrap_or_default();
 1693
 1694            window
 1695                .update(cx, |workspace, window, cx| {
 1696                    window.activate_window();
 1697                    workspace.update_history(cx);
 1698                })
 1699                .log_err();
 1700            Ok((window, opened_items))
 1701        })
 1702    }
 1703
 1704    pub fn weak_handle(&self) -> WeakEntity<Self> {
 1705        self.weak_self.clone()
 1706    }
 1707
 1708    pub fn left_dock(&self) -> &Entity<Dock> {
 1709        &self.left_dock
 1710    }
 1711
 1712    pub fn bottom_dock(&self) -> &Entity<Dock> {
 1713        &self.bottom_dock
 1714    }
 1715
 1716    pub fn set_bottom_dock_layout(
 1717        &mut self,
 1718        layout: BottomDockLayout,
 1719        window: &mut Window,
 1720        cx: &mut Context<Self>,
 1721    ) {
 1722        let fs = self.project().read(cx).fs();
 1723        settings::update_settings_file(fs.clone(), cx, move |content, _cx| {
 1724            content.workspace.bottom_dock_layout = Some(layout);
 1725        });
 1726
 1727        cx.notify();
 1728        self.serialize_workspace(window, cx);
 1729    }
 1730
 1731    pub fn right_dock(&self) -> &Entity<Dock> {
 1732        &self.right_dock
 1733    }
 1734
 1735    pub fn all_docks(&self) -> [&Entity<Dock>; 3] {
 1736        [&self.left_dock, &self.bottom_dock, &self.right_dock]
 1737    }
 1738
 1739    pub fn dock_at_position(&self, position: DockPosition) -> &Entity<Dock> {
 1740        match position {
 1741            DockPosition::Left => &self.left_dock,
 1742            DockPosition::Bottom => &self.bottom_dock,
 1743            DockPosition::Right => &self.right_dock,
 1744        }
 1745    }
 1746
 1747    pub fn is_edited(&self) -> bool {
 1748        self.window_edited
 1749    }
 1750
 1751    pub fn add_panel<T: Panel>(
 1752        &mut self,
 1753        panel: Entity<T>,
 1754        window: &mut Window,
 1755        cx: &mut Context<Self>,
 1756    ) {
 1757        let focus_handle = panel.panel_focus_handle(cx);
 1758        cx.on_focus_in(&focus_handle, window, Self::handle_panel_focused)
 1759            .detach();
 1760
 1761        let dock_position = panel.position(window, cx);
 1762        let dock = self.dock_at_position(dock_position);
 1763
 1764        dock.update(cx, |dock, cx| {
 1765            dock.add_panel(panel, self.weak_self.clone(), window, cx)
 1766        });
 1767    }
 1768
 1769    pub fn remove_panel<T: Panel>(
 1770        &mut self,
 1771        panel: &Entity<T>,
 1772        window: &mut Window,
 1773        cx: &mut Context<Self>,
 1774    ) {
 1775        for dock in [&self.left_dock, &self.bottom_dock, &self.right_dock] {
 1776            dock.update(cx, |dock, cx| {
 1777                dock.remove_panel(panel, window, cx);
 1778            })
 1779        }
 1780    }
 1781
 1782    pub fn status_bar(&self) -> &Entity<StatusBar> {
 1783        &self.status_bar
 1784    }
 1785
 1786    pub fn status_bar_visible(&self, cx: &App) -> bool {
 1787        StatusBarSettings::get_global(cx).show
 1788    }
 1789
 1790    pub fn app_state(&self) -> &Arc<AppState> {
 1791        &self.app_state
 1792    }
 1793
 1794    pub fn user_store(&self) -> &Entity<UserStore> {
 1795        &self.app_state.user_store
 1796    }
 1797
 1798    pub fn project(&self) -> &Entity<Project> {
 1799        &self.project
 1800    }
 1801
 1802    pub fn path_style(&self, cx: &App) -> PathStyle {
 1803        self.project.read(cx).path_style(cx)
 1804    }
 1805
 1806    pub fn recently_activated_items(&self, cx: &App) -> HashMap<EntityId, usize> {
 1807        let mut history: HashMap<EntityId, usize> = HashMap::default();
 1808
 1809        for pane_handle in &self.panes {
 1810            let pane = pane_handle.read(cx);
 1811
 1812            for entry in pane.activation_history() {
 1813                history.insert(
 1814                    entry.entity_id,
 1815                    history
 1816                        .get(&entry.entity_id)
 1817                        .cloned()
 1818                        .unwrap_or(0)
 1819                        .max(entry.timestamp),
 1820                );
 1821            }
 1822        }
 1823
 1824        history
 1825    }
 1826
 1827    pub fn recent_active_item_by_type<T: 'static>(&self, cx: &App) -> Option<Entity<T>> {
 1828        let mut recent_item: Option<Entity<T>> = None;
 1829        let mut recent_timestamp = 0;
 1830        for pane_handle in &self.panes {
 1831            let pane = pane_handle.read(cx);
 1832            let item_map: HashMap<EntityId, &Box<dyn ItemHandle>> =
 1833                pane.items().map(|item| (item.item_id(), item)).collect();
 1834            for entry in pane.activation_history() {
 1835                if entry.timestamp > recent_timestamp
 1836                    && let Some(&item) = item_map.get(&entry.entity_id)
 1837                    && let Some(typed_item) = item.act_as::<T>(cx)
 1838                {
 1839                    recent_timestamp = entry.timestamp;
 1840                    recent_item = Some(typed_item);
 1841                }
 1842            }
 1843        }
 1844        recent_item
 1845    }
 1846
 1847    pub fn recent_navigation_history_iter(
 1848        &self,
 1849        cx: &App,
 1850    ) -> impl Iterator<Item = (ProjectPath, Option<PathBuf>)> {
 1851        let mut abs_paths_opened: HashMap<PathBuf, HashSet<ProjectPath>> = HashMap::default();
 1852        let mut history: HashMap<ProjectPath, (Option<PathBuf>, usize)> = HashMap::default();
 1853
 1854        for pane in &self.panes {
 1855            let pane = pane.read(cx);
 1856
 1857            pane.nav_history()
 1858                .for_each_entry(cx, |entry, (project_path, fs_path)| {
 1859                    if let Some(fs_path) = &fs_path {
 1860                        abs_paths_opened
 1861                            .entry(fs_path.clone())
 1862                            .or_default()
 1863                            .insert(project_path.clone());
 1864                    }
 1865                    let timestamp = entry.timestamp;
 1866                    match history.entry(project_path) {
 1867                        hash_map::Entry::Occupied(mut entry) => {
 1868                            let (_, old_timestamp) = entry.get();
 1869                            if &timestamp > old_timestamp {
 1870                                entry.insert((fs_path, timestamp));
 1871                            }
 1872                        }
 1873                        hash_map::Entry::Vacant(entry) => {
 1874                            entry.insert((fs_path, timestamp));
 1875                        }
 1876                    }
 1877                });
 1878
 1879            if let Some(item) = pane.active_item()
 1880                && let Some(project_path) = item.project_path(cx)
 1881            {
 1882                let fs_path = self.project.read(cx).absolute_path(&project_path, cx);
 1883
 1884                if let Some(fs_path) = &fs_path {
 1885                    abs_paths_opened
 1886                        .entry(fs_path.clone())
 1887                        .or_default()
 1888                        .insert(project_path.clone());
 1889                }
 1890
 1891                history.insert(project_path, (fs_path, std::usize::MAX));
 1892            }
 1893        }
 1894
 1895        history
 1896            .into_iter()
 1897            .sorted_by_key(|(_, (_, order))| *order)
 1898            .map(|(project_path, (fs_path, _))| (project_path, fs_path))
 1899            .rev()
 1900            .filter(move |(history_path, abs_path)| {
 1901                let latest_project_path_opened = abs_path
 1902                    .as_ref()
 1903                    .and_then(|abs_path| abs_paths_opened.get(abs_path))
 1904                    .and_then(|project_paths| {
 1905                        project_paths
 1906                            .iter()
 1907                            .max_by(|b1, b2| b1.worktree_id.cmp(&b2.worktree_id))
 1908                    });
 1909
 1910                latest_project_path_opened.is_none_or(|path| path == history_path)
 1911            })
 1912    }
 1913
 1914    pub fn recent_navigation_history(
 1915        &self,
 1916        limit: Option<usize>,
 1917        cx: &App,
 1918    ) -> Vec<(ProjectPath, Option<PathBuf>)> {
 1919        self.recent_navigation_history_iter(cx)
 1920            .take(limit.unwrap_or(usize::MAX))
 1921            .collect()
 1922    }
 1923
 1924    fn navigate_history(
 1925        &mut self,
 1926        pane: WeakEntity<Pane>,
 1927        mode: NavigationMode,
 1928        window: &mut Window,
 1929        cx: &mut Context<Workspace>,
 1930    ) -> Task<Result<()>> {
 1931        let to_load = if let Some(pane) = pane.upgrade() {
 1932            pane.update(cx, |pane, cx| {
 1933                window.focus(&pane.focus_handle(cx));
 1934                loop {
 1935                    // Retrieve the weak item handle from the history.
 1936                    let entry = pane.nav_history_mut().pop(mode, cx)?;
 1937
 1938                    // If the item is still present in this pane, then activate it.
 1939                    if let Some(index) = entry
 1940                        .item
 1941                        .upgrade()
 1942                        .and_then(|v| pane.index_for_item(v.as_ref()))
 1943                    {
 1944                        let prev_active_item_index = pane.active_item_index();
 1945                        pane.nav_history_mut().set_mode(mode);
 1946                        pane.activate_item(index, true, true, window, cx);
 1947                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1948
 1949                        let mut navigated = prev_active_item_index != pane.active_item_index();
 1950                        if let Some(data) = entry.data {
 1951                            navigated |= pane.active_item()?.navigate(data, window, cx);
 1952                        }
 1953
 1954                        if navigated {
 1955                            break None;
 1956                        }
 1957                    } else {
 1958                        // If the item is no longer present in this pane, then retrieve its
 1959                        // path info in order to reopen it.
 1960                        break pane
 1961                            .nav_history()
 1962                            .path_for_item(entry.item.id())
 1963                            .map(|(project_path, abs_path)| (project_path, abs_path, entry));
 1964                    }
 1965                }
 1966            })
 1967        } else {
 1968            None
 1969        };
 1970
 1971        if let Some((project_path, abs_path, entry)) = to_load {
 1972            // If the item was no longer present, then load it again from its previous path, first try the local path
 1973            let open_by_project_path = self.load_path(project_path.clone(), window, cx);
 1974
 1975            cx.spawn_in(window, async move  |workspace, cx| {
 1976                let open_by_project_path = open_by_project_path.await;
 1977                let mut navigated = false;
 1978                match open_by_project_path
 1979                    .with_context(|| format!("Navigating to {project_path:?}"))
 1980                {
 1981                    Ok((project_entry_id, build_item)) => {
 1982                        let prev_active_item_id = pane.update(cx, |pane, _| {
 1983                            pane.nav_history_mut().set_mode(mode);
 1984                            pane.active_item().map(|p| p.item_id())
 1985                        })?;
 1986
 1987                        pane.update_in(cx, |pane, window, cx| {
 1988                            let item = pane.open_item(
 1989                                project_entry_id,
 1990                                project_path,
 1991                                true,
 1992                                entry.is_preview,
 1993                                true,
 1994                                None,
 1995                                window, cx,
 1996                                build_item,
 1997                            );
 1998                            navigated |= Some(item.item_id()) != prev_active_item_id;
 1999                            pane.nav_history_mut().set_mode(NavigationMode::Normal);
 2000                            if let Some(data) = entry.data {
 2001                                navigated |= item.navigate(data, window, cx);
 2002                            }
 2003                        })?;
 2004                    }
 2005                    Err(open_by_project_path_e) => {
 2006                        // Fall back to opening by abs path, in case an external file was opened and closed,
 2007                        // and its worktree is now dropped
 2008                        if let Some(abs_path) = abs_path {
 2009                            let prev_active_item_id = pane.update(cx, |pane, _| {
 2010                                pane.nav_history_mut().set_mode(mode);
 2011                                pane.active_item().map(|p| p.item_id())
 2012                            })?;
 2013                            let open_by_abs_path = workspace.update_in(cx, |workspace, window, cx| {
 2014                                workspace.open_abs_path(abs_path.clone(), OpenOptions { visible: Some(OpenVisible::None), ..Default::default() }, window, cx)
 2015                            })?;
 2016                            match open_by_abs_path
 2017                                .await
 2018                                .with_context(|| format!("Navigating to {abs_path:?}"))
 2019                            {
 2020                                Ok(item) => {
 2021                                    pane.update_in(cx, |pane, window, cx| {
 2022                                        navigated |= Some(item.item_id()) != prev_active_item_id;
 2023                                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 2024                                        if let Some(data) = entry.data {
 2025                                            navigated |= item.navigate(data, window, cx);
 2026                                        }
 2027                                    })?;
 2028                                }
 2029                                Err(open_by_abs_path_e) => {
 2030                                    log::error!("Failed to navigate history: {open_by_project_path_e:#} and {open_by_abs_path_e:#}");
 2031                                }
 2032                            }
 2033                        }
 2034                    }
 2035                }
 2036
 2037                if !navigated {
 2038                    workspace
 2039                        .update_in(cx, |workspace, window, cx| {
 2040                            Self::navigate_history(workspace, pane, mode, window, cx)
 2041                        })?
 2042                        .await?;
 2043                }
 2044
 2045                Ok(())
 2046            })
 2047        } else {
 2048            Task::ready(Ok(()))
 2049        }
 2050    }
 2051
 2052    pub fn go_back(
 2053        &mut self,
 2054        pane: WeakEntity<Pane>,
 2055        window: &mut Window,
 2056        cx: &mut Context<Workspace>,
 2057    ) -> Task<Result<()>> {
 2058        self.navigate_history(pane, NavigationMode::GoingBack, window, cx)
 2059    }
 2060
 2061    pub fn go_forward(
 2062        &mut self,
 2063        pane: WeakEntity<Pane>,
 2064        window: &mut Window,
 2065        cx: &mut Context<Workspace>,
 2066    ) -> Task<Result<()>> {
 2067        self.navigate_history(pane, NavigationMode::GoingForward, window, cx)
 2068    }
 2069
 2070    pub fn reopen_closed_item(
 2071        &mut self,
 2072        window: &mut Window,
 2073        cx: &mut Context<Workspace>,
 2074    ) -> Task<Result<()>> {
 2075        self.navigate_history(
 2076            self.active_pane().downgrade(),
 2077            NavigationMode::ReopeningClosedItem,
 2078            window,
 2079            cx,
 2080        )
 2081    }
 2082
 2083    pub fn client(&self) -> &Arc<Client> {
 2084        &self.app_state.client
 2085    }
 2086
 2087    pub fn set_titlebar_item(&mut self, item: AnyView, _: &mut Window, cx: &mut Context<Self>) {
 2088        self.titlebar_item = Some(item);
 2089        cx.notify();
 2090    }
 2091
 2092    pub fn set_prompt_for_new_path(&mut self, prompt: PromptForNewPath) {
 2093        self.on_prompt_for_new_path = Some(prompt)
 2094    }
 2095
 2096    pub fn set_prompt_for_open_path(&mut self, prompt: PromptForOpenPath) {
 2097        self.on_prompt_for_open_path = Some(prompt)
 2098    }
 2099
 2100    pub fn set_terminal_provider(&mut self, provider: impl TerminalProvider + 'static) {
 2101        self.terminal_provider = Some(Box::new(provider));
 2102    }
 2103
 2104    pub fn set_debugger_provider(&mut self, provider: impl DebuggerProvider + 'static) {
 2105        self.debugger_provider = Some(Arc::new(provider));
 2106    }
 2107
 2108    pub fn debugger_provider(&self) -> Option<Arc<dyn DebuggerProvider>> {
 2109        self.debugger_provider.clone()
 2110    }
 2111
 2112    pub fn prompt_for_open_path(
 2113        &mut self,
 2114        path_prompt_options: PathPromptOptions,
 2115        lister: DirectoryLister,
 2116        window: &mut Window,
 2117        cx: &mut Context<Self>,
 2118    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2119        if !lister.is_local(cx) || !WorkspaceSettings::get_global(cx).use_system_path_prompts {
 2120            let prompt = self.on_prompt_for_open_path.take().unwrap();
 2121            let rx = prompt(self, lister, window, cx);
 2122            self.on_prompt_for_open_path = Some(prompt);
 2123            rx
 2124        } else {
 2125            let (tx, rx) = oneshot::channel();
 2126            let abs_path = cx.prompt_for_paths(path_prompt_options);
 2127
 2128            cx.spawn_in(window, async move |workspace, cx| {
 2129                let Ok(result) = abs_path.await else {
 2130                    return Ok(());
 2131                };
 2132
 2133                match result {
 2134                    Ok(result) => {
 2135                        tx.send(result).ok();
 2136                    }
 2137                    Err(err) => {
 2138                        let rx = workspace.update_in(cx, |workspace, window, cx| {
 2139                            workspace.show_portal_error(err.to_string(), cx);
 2140                            let prompt = workspace.on_prompt_for_open_path.take().unwrap();
 2141                            let rx = prompt(workspace, lister, window, cx);
 2142                            workspace.on_prompt_for_open_path = Some(prompt);
 2143                            rx
 2144                        })?;
 2145                        if let Ok(path) = rx.await {
 2146                            tx.send(path).ok();
 2147                        }
 2148                    }
 2149                };
 2150                anyhow::Ok(())
 2151            })
 2152            .detach();
 2153
 2154            rx
 2155        }
 2156    }
 2157
 2158    pub fn prompt_for_new_path(
 2159        &mut self,
 2160        lister: DirectoryLister,
 2161        suggested_name: Option<String>,
 2162        window: &mut Window,
 2163        cx: &mut Context<Self>,
 2164    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2165        if self.project.read(cx).is_via_collab()
 2166            || self.project.read(cx).is_via_remote_server()
 2167            || !WorkspaceSettings::get_global(cx).use_system_path_prompts
 2168        {
 2169            let prompt = self.on_prompt_for_new_path.take().unwrap();
 2170            let rx = prompt(self, lister, window, cx);
 2171            self.on_prompt_for_new_path = Some(prompt);
 2172            return rx;
 2173        }
 2174
 2175        let (tx, rx) = oneshot::channel();
 2176        cx.spawn_in(window, async move |workspace, cx| {
 2177            let abs_path = workspace.update(cx, |workspace, cx| {
 2178                let relative_to = workspace
 2179                    .most_recent_active_path(cx)
 2180                    .and_then(|p| p.parent().map(|p| p.to_path_buf()))
 2181                    .or_else(|| {
 2182                        let project = workspace.project.read(cx);
 2183                        project.visible_worktrees(cx).find_map(|worktree| {
 2184                            Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
 2185                        })
 2186                    })
 2187                    .or_else(std::env::home_dir)
 2188                    .unwrap_or_else(|| PathBuf::from(""));
 2189                cx.prompt_for_new_path(&relative_to, suggested_name.as_deref())
 2190            })?;
 2191            let abs_path = match abs_path.await? {
 2192                Ok(path) => path,
 2193                Err(err) => {
 2194                    let rx = workspace.update_in(cx, |workspace, window, cx| {
 2195                        workspace.show_portal_error(err.to_string(), cx);
 2196
 2197                        let prompt = workspace.on_prompt_for_new_path.take().unwrap();
 2198                        let rx = prompt(workspace, lister, window, cx);
 2199                        workspace.on_prompt_for_new_path = Some(prompt);
 2200                        rx
 2201                    })?;
 2202                    if let Ok(path) = rx.await {
 2203                        tx.send(path).ok();
 2204                    }
 2205                    return anyhow::Ok(());
 2206                }
 2207            };
 2208
 2209            tx.send(abs_path.map(|path| vec![path])).ok();
 2210            anyhow::Ok(())
 2211        })
 2212        .detach();
 2213
 2214        rx
 2215    }
 2216
 2217    pub fn titlebar_item(&self) -> Option<AnyView> {
 2218        self.titlebar_item.clone()
 2219    }
 2220
 2221    /// Call the given callback with a workspace whose project is local.
 2222    ///
 2223    /// If the given workspace has a local project, then it will be passed
 2224    /// to the callback. Otherwise, a new empty window will be created.
 2225    pub fn with_local_workspace<T, F>(
 2226        &mut self,
 2227        window: &mut Window,
 2228        cx: &mut Context<Self>,
 2229        callback: F,
 2230    ) -> Task<Result<T>>
 2231    where
 2232        T: 'static,
 2233        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
 2234    {
 2235        if self.project.read(cx).is_local() {
 2236            Task::ready(Ok(callback(self, window, cx)))
 2237        } else {
 2238            let env = self.project.read(cx).cli_environment(cx);
 2239            let task = Self::new_local(Vec::new(), self.app_state.clone(), None, env, cx);
 2240            cx.spawn_in(window, async move |_vh, cx| {
 2241                let (workspace, _) = task.await?;
 2242                workspace.update(cx, callback)
 2243            })
 2244        }
 2245    }
 2246
 2247    pub fn worktrees<'a>(&self, cx: &'a App) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2248        self.project.read(cx).worktrees(cx)
 2249    }
 2250
 2251    pub fn visible_worktrees<'a>(
 2252        &self,
 2253        cx: &'a App,
 2254    ) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2255        self.project.read(cx).visible_worktrees(cx)
 2256    }
 2257
 2258    #[cfg(any(test, feature = "test-support"))]
 2259    pub fn worktree_scans_complete(&self, cx: &App) -> impl Future<Output = ()> + 'static + use<> {
 2260        let futures = self
 2261            .worktrees(cx)
 2262            .filter_map(|worktree| worktree.read(cx).as_local())
 2263            .map(|worktree| worktree.scan_complete())
 2264            .collect::<Vec<_>>();
 2265        async move {
 2266            for future in futures {
 2267                future.await;
 2268            }
 2269        }
 2270    }
 2271
 2272    pub fn close_global(cx: &mut App) {
 2273        cx.defer(|cx| {
 2274            cx.windows().iter().find(|window| {
 2275                window
 2276                    .update(cx, |_, window, _| {
 2277                        if window.is_window_active() {
 2278                            //This can only get called when the window's project connection has been lost
 2279                            //so we don't need to prompt the user for anything and instead just close the window
 2280                            window.remove_window();
 2281                            true
 2282                        } else {
 2283                            false
 2284                        }
 2285                    })
 2286                    .unwrap_or(false)
 2287            });
 2288        });
 2289    }
 2290
 2291    pub fn close_window(&mut self, _: &CloseWindow, window: &mut Window, cx: &mut Context<Self>) {
 2292        let prepare = self.prepare_to_close(CloseIntent::CloseWindow, window, cx);
 2293        cx.spawn_in(window, async move |_, cx| {
 2294            if prepare.await? {
 2295                cx.update(|window, _cx| window.remove_window())?;
 2296            }
 2297            anyhow::Ok(())
 2298        })
 2299        .detach_and_log_err(cx)
 2300    }
 2301
 2302    pub fn move_focused_panel_to_next_position(
 2303        &mut self,
 2304        _: &MoveFocusedPanelToNextPosition,
 2305        window: &mut Window,
 2306        cx: &mut Context<Self>,
 2307    ) {
 2308        let docks = self.all_docks();
 2309        let active_dock = docks
 2310            .into_iter()
 2311            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 2312
 2313        if let Some(dock) = active_dock {
 2314            dock.update(cx, |dock, cx| {
 2315                let active_panel = dock
 2316                    .active_panel()
 2317                    .filter(|panel| panel.panel_focus_handle(cx).contains_focused(window, cx));
 2318
 2319                if let Some(panel) = active_panel {
 2320                    panel.move_to_next_position(window, cx);
 2321                }
 2322            })
 2323        }
 2324    }
 2325
 2326    pub fn prepare_to_close(
 2327        &mut self,
 2328        close_intent: CloseIntent,
 2329        window: &mut Window,
 2330        cx: &mut Context<Self>,
 2331    ) -> Task<Result<bool>> {
 2332        let active_call = self.active_call().cloned();
 2333
 2334        // On Linux and Windows, closing the last window should restore the last workspace.
 2335        let save_last_workspace = cfg!(not(target_os = "macos"))
 2336            && close_intent != CloseIntent::ReplaceWindow
 2337            && cx.windows().len() == 1;
 2338
 2339        cx.spawn_in(window, async move |this, cx| {
 2340            let workspace_count = cx.update(|_window, cx| {
 2341                cx.windows()
 2342                    .iter()
 2343                    .filter(|window| window.downcast::<Workspace>().is_some())
 2344                    .count()
 2345            })?;
 2346
 2347            if let Some(active_call) = active_call
 2348                && workspace_count == 1
 2349                && active_call.read_with(cx, |call, _| call.room().is_some())?
 2350            {
 2351                if close_intent == CloseIntent::CloseWindow {
 2352                    let answer = cx.update(|window, cx| {
 2353                        window.prompt(
 2354                            PromptLevel::Warning,
 2355                            "Do you want to leave the current call?",
 2356                            None,
 2357                            &["Close window and hang up", "Cancel"],
 2358                            cx,
 2359                        )
 2360                    })?;
 2361
 2362                    if answer.await.log_err() == Some(1) {
 2363                        return anyhow::Ok(false);
 2364                    } else {
 2365                        active_call
 2366                            .update(cx, |call, cx| call.hang_up(cx))?
 2367                            .await
 2368                            .log_err();
 2369                    }
 2370                }
 2371                if close_intent == CloseIntent::ReplaceWindow {
 2372                    _ = active_call.update(cx, |this, cx| {
 2373                        let workspace = cx
 2374                            .windows()
 2375                            .iter()
 2376                            .filter_map(|window| window.downcast::<Workspace>())
 2377                            .next()
 2378                            .unwrap();
 2379                        let project = workspace.read(cx)?.project.clone();
 2380                        if project.read(cx).is_shared() {
 2381                            this.unshare_project(project, cx)?;
 2382                        }
 2383                        Ok::<_, anyhow::Error>(())
 2384                    })?;
 2385                }
 2386            }
 2387
 2388            let save_result = this
 2389                .update_in(cx, |this, window, cx| {
 2390                    this.save_all_internal(SaveIntent::Close, window, cx)
 2391                })?
 2392                .await;
 2393
 2394            // If we're not quitting, but closing, we remove the workspace from
 2395            // the current session.
 2396            if close_intent != CloseIntent::Quit
 2397                && !save_last_workspace
 2398                && save_result.as_ref().is_ok_and(|&res| res)
 2399            {
 2400                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))?
 2401                    .await;
 2402            }
 2403
 2404            save_result
 2405        })
 2406    }
 2407
 2408    fn save_all(&mut self, action: &SaveAll, window: &mut Window, cx: &mut Context<Self>) {
 2409        self.save_all_internal(
 2410            action.save_intent.unwrap_or(SaveIntent::SaveAll),
 2411            window,
 2412            cx,
 2413        )
 2414        .detach_and_log_err(cx);
 2415    }
 2416
 2417    fn send_keystrokes(
 2418        &mut self,
 2419        action: &SendKeystrokes,
 2420        window: &mut Window,
 2421        cx: &mut Context<Self>,
 2422    ) {
 2423        let keystrokes: Vec<Keystroke> = action
 2424            .0
 2425            .split(' ')
 2426            .flat_map(|k| Keystroke::parse(k).log_err())
 2427            .collect();
 2428        let _ = self.send_keystrokes_impl(keystrokes, window, cx);
 2429    }
 2430
 2431    pub fn send_keystrokes_impl(
 2432        &mut self,
 2433        keystrokes: Vec<Keystroke>,
 2434        window: &mut Window,
 2435        cx: &mut Context<Self>,
 2436    ) -> Shared<Task<()>> {
 2437        let mut state = self.dispatching_keystrokes.borrow_mut();
 2438        if !state.dispatched.insert(keystrokes.clone()) {
 2439            cx.propagate();
 2440            return state.task.clone().unwrap();
 2441        }
 2442
 2443        state.queue.extend(keystrokes);
 2444
 2445        let keystrokes = self.dispatching_keystrokes.clone();
 2446        if state.task.is_none() {
 2447            state.task = Some(
 2448                window
 2449                    .spawn(cx, async move |cx| {
 2450                        // limit to 100 keystrokes to avoid infinite recursion.
 2451                        for _ in 0..100 {
 2452                            let mut state = keystrokes.borrow_mut();
 2453                            let Some(keystroke) = state.queue.pop_front() else {
 2454                                state.dispatched.clear();
 2455                                state.task.take();
 2456                                return;
 2457                            };
 2458                            drop(state);
 2459                            cx.update(|window, cx| {
 2460                                let focused = window.focused(cx);
 2461                                window.dispatch_keystroke(keystroke.clone(), cx);
 2462                                if window.focused(cx) != focused {
 2463                                    // dispatch_keystroke may cause the focus to change.
 2464                                    // draw's side effect is to schedule the FocusChanged events in the current flush effect cycle
 2465                                    // And we need that to happen before the next keystroke to keep vim mode happy...
 2466                                    // (Note that the tests always do this implicitly, so you must manually test with something like:
 2467                                    //   "bindings": { "g z": ["workspace::SendKeystrokes", ": j <enter> u"]}
 2468                                    // )
 2469                                    window.draw(cx).clear();
 2470                                }
 2471                            })
 2472                            .ok();
 2473                        }
 2474
 2475                        *keystrokes.borrow_mut() = Default::default();
 2476                        log::error!("over 100 keystrokes passed to send_keystrokes");
 2477                    })
 2478                    .shared(),
 2479            );
 2480        }
 2481        state.task.clone().unwrap()
 2482    }
 2483
 2484    fn save_all_internal(
 2485        &mut self,
 2486        mut save_intent: SaveIntent,
 2487        window: &mut Window,
 2488        cx: &mut Context<Self>,
 2489    ) -> Task<Result<bool>> {
 2490        if self.project.read(cx).is_disconnected(cx) {
 2491            return Task::ready(Ok(true));
 2492        }
 2493        let dirty_items = self
 2494            .panes
 2495            .iter()
 2496            .flat_map(|pane| {
 2497                pane.read(cx).items().filter_map(|item| {
 2498                    if item.is_dirty(cx) {
 2499                        item.tab_content_text(0, cx);
 2500                        Some((pane.downgrade(), item.boxed_clone()))
 2501                    } else {
 2502                        None
 2503                    }
 2504                })
 2505            })
 2506            .collect::<Vec<_>>();
 2507
 2508        let project = self.project.clone();
 2509        cx.spawn_in(window, async move |workspace, cx| {
 2510            let dirty_items = if save_intent == SaveIntent::Close && !dirty_items.is_empty() {
 2511                let (serialize_tasks, remaining_dirty_items) =
 2512                    workspace.update_in(cx, |workspace, window, cx| {
 2513                        let mut remaining_dirty_items = Vec::new();
 2514                        let mut serialize_tasks = Vec::new();
 2515                        for (pane, item) in dirty_items {
 2516                            if let Some(task) = item
 2517                                .to_serializable_item_handle(cx)
 2518                                .and_then(|handle| handle.serialize(workspace, true, window, cx))
 2519                            {
 2520                                serialize_tasks.push(task);
 2521                            } else {
 2522                                remaining_dirty_items.push((pane, item));
 2523                            }
 2524                        }
 2525                        (serialize_tasks, remaining_dirty_items)
 2526                    })?;
 2527
 2528                futures::future::try_join_all(serialize_tasks).await?;
 2529
 2530                if remaining_dirty_items.len() > 1 {
 2531                    let answer = workspace.update_in(cx, |_, window, cx| {
 2532                        let detail = Pane::file_names_for_prompt(
 2533                            &mut remaining_dirty_items.iter().map(|(_, handle)| handle),
 2534                            cx,
 2535                        );
 2536                        window.prompt(
 2537                            PromptLevel::Warning,
 2538                            "Do you want to save all changes in the following files?",
 2539                            Some(&detail),
 2540                            &["Save all", "Discard all", "Cancel"],
 2541                            cx,
 2542                        )
 2543                    })?;
 2544                    match answer.await.log_err() {
 2545                        Some(0) => save_intent = SaveIntent::SaveAll,
 2546                        Some(1) => save_intent = SaveIntent::Skip,
 2547                        Some(2) => return Ok(false),
 2548                        _ => {}
 2549                    }
 2550                }
 2551
 2552                remaining_dirty_items
 2553            } else {
 2554                dirty_items
 2555            };
 2556
 2557            for (pane, item) in dirty_items {
 2558                let (singleton, project_entry_ids) = cx.update(|_, cx| {
 2559                    (
 2560                        item.buffer_kind(cx) == ItemBufferKind::Singleton,
 2561                        item.project_entry_ids(cx),
 2562                    )
 2563                })?;
 2564                if (singleton || !project_entry_ids.is_empty())
 2565                    && !Pane::save_item(project.clone(), &pane, &*item, save_intent, cx).await?
 2566                {
 2567                    return Ok(false);
 2568                }
 2569            }
 2570            Ok(true)
 2571        })
 2572    }
 2573
 2574    pub fn open_workspace_for_paths(
 2575        &mut self,
 2576        replace_current_window: bool,
 2577        paths: Vec<PathBuf>,
 2578        window: &mut Window,
 2579        cx: &mut Context<Self>,
 2580    ) -> Task<Result<()>> {
 2581        let window_handle = window.window_handle().downcast::<Self>();
 2582        let is_remote = self.project.read(cx).is_via_collab();
 2583        let has_worktree = self.project.read(cx).worktrees(cx).next().is_some();
 2584        let has_dirty_items = self.items(cx).any(|item| item.is_dirty(cx));
 2585
 2586        let window_to_replace = if replace_current_window {
 2587            window_handle
 2588        } else if is_remote || has_worktree || has_dirty_items {
 2589            None
 2590        } else {
 2591            window_handle
 2592        };
 2593        let app_state = self.app_state.clone();
 2594
 2595        cx.spawn(async move |_, cx| {
 2596            cx.update(|cx| {
 2597                open_paths(
 2598                    &paths,
 2599                    app_state,
 2600                    OpenOptions {
 2601                        replace_window: window_to_replace,
 2602                        ..Default::default()
 2603                    },
 2604                    cx,
 2605                )
 2606            })?
 2607            .await?;
 2608            Ok(())
 2609        })
 2610    }
 2611
 2612    #[allow(clippy::type_complexity)]
 2613    pub fn open_paths(
 2614        &mut self,
 2615        mut abs_paths: Vec<PathBuf>,
 2616        options: OpenOptions,
 2617        pane: Option<WeakEntity<Pane>>,
 2618        window: &mut Window,
 2619        cx: &mut Context<Self>,
 2620    ) -> Task<Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>> {
 2621        let fs = self.app_state.fs.clone();
 2622
 2623        // Sort the paths to ensure we add worktrees for parents before their children.
 2624        abs_paths.sort_unstable();
 2625        cx.spawn_in(window, async move |this, cx| {
 2626            let mut tasks = Vec::with_capacity(abs_paths.len());
 2627
 2628            for abs_path in &abs_paths {
 2629                let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
 2630                    OpenVisible::All => Some(true),
 2631                    OpenVisible::None => Some(false),
 2632                    OpenVisible::OnlyFiles => match fs.metadata(abs_path).await.log_err() {
 2633                        Some(Some(metadata)) => Some(!metadata.is_dir),
 2634                        Some(None) => Some(true),
 2635                        None => None,
 2636                    },
 2637                    OpenVisible::OnlyDirectories => match fs.metadata(abs_path).await.log_err() {
 2638                        Some(Some(metadata)) => Some(metadata.is_dir),
 2639                        Some(None) => Some(false),
 2640                        None => None,
 2641                    },
 2642                };
 2643                let project_path = match visible {
 2644                    Some(visible) => match this
 2645                        .update(cx, |this, cx| {
 2646                            Workspace::project_path_for_path(
 2647                                this.project.clone(),
 2648                                abs_path,
 2649                                visible,
 2650                                cx,
 2651                            )
 2652                        })
 2653                        .log_err()
 2654                    {
 2655                        Some(project_path) => project_path.await.log_err(),
 2656                        None => None,
 2657                    },
 2658                    None => None,
 2659                };
 2660
 2661                let this = this.clone();
 2662                let abs_path: Arc<Path> = SanitizedPath::new(&abs_path).as_path().into();
 2663                let fs = fs.clone();
 2664                let pane = pane.clone();
 2665                let task = cx.spawn(async move |cx| {
 2666                    let (worktree, project_path) = project_path?;
 2667                    if fs.is_dir(&abs_path).await {
 2668                        this.update(cx, |workspace, cx| {
 2669                            let worktree = worktree.read(cx);
 2670                            let worktree_abs_path = worktree.abs_path();
 2671                            let entry_id = if abs_path.as_ref() == worktree_abs_path.as_ref() {
 2672                                worktree.root_entry()
 2673                            } else {
 2674                                abs_path
 2675                                    .strip_prefix(worktree_abs_path.as_ref())
 2676                                    .ok()
 2677                                    .and_then(|relative_path| {
 2678                                        let relative_path =
 2679                                            RelPath::new(relative_path, PathStyle::local())
 2680                                                .log_err()?;
 2681                                        worktree.entry_for_path(&relative_path)
 2682                                    })
 2683                            }
 2684                            .map(|entry| entry.id);
 2685                            if let Some(entry_id) = entry_id {
 2686                                workspace.project.update(cx, |_, cx| {
 2687                                    cx.emit(project::Event::ActiveEntryChanged(Some(entry_id)));
 2688                                })
 2689                            }
 2690                        })
 2691                        .ok()?;
 2692                        None
 2693                    } else {
 2694                        Some(
 2695                            this.update_in(cx, |this, window, cx| {
 2696                                this.open_path(
 2697                                    project_path,
 2698                                    pane,
 2699                                    options.focus.unwrap_or(true),
 2700                                    window,
 2701                                    cx,
 2702                                )
 2703                            })
 2704                            .ok()?
 2705                            .await,
 2706                        )
 2707                    }
 2708                });
 2709                tasks.push(task);
 2710            }
 2711
 2712            futures::future::join_all(tasks).await
 2713        })
 2714    }
 2715
 2716    pub fn open_resolved_path(
 2717        &mut self,
 2718        path: ResolvedPath,
 2719        window: &mut Window,
 2720        cx: &mut Context<Self>,
 2721    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 2722        match path {
 2723            ResolvedPath::ProjectPath { project_path, .. } => {
 2724                self.open_path(project_path, None, true, window, cx)
 2725            }
 2726            ResolvedPath::AbsPath { path, .. } => self.open_abs_path(
 2727                PathBuf::from(path),
 2728                OpenOptions {
 2729                    visible: Some(OpenVisible::None),
 2730                    ..Default::default()
 2731                },
 2732                window,
 2733                cx,
 2734            ),
 2735        }
 2736    }
 2737
 2738    pub fn absolute_path_of_worktree(
 2739        &self,
 2740        worktree_id: WorktreeId,
 2741        cx: &mut Context<Self>,
 2742    ) -> Option<PathBuf> {
 2743        self.project
 2744            .read(cx)
 2745            .worktree_for_id(worktree_id, cx)
 2746            // TODO: use `abs_path` or `root_dir`
 2747            .map(|wt| wt.read(cx).abs_path().as_ref().to_path_buf())
 2748    }
 2749
 2750    fn add_folder_to_project(
 2751        &mut self,
 2752        _: &AddFolderToProject,
 2753        window: &mut Window,
 2754        cx: &mut Context<Self>,
 2755    ) {
 2756        let project = self.project.read(cx);
 2757        if project.is_via_collab() {
 2758            self.show_error(
 2759                &anyhow!("You cannot add folders to someone else's project"),
 2760                cx,
 2761            );
 2762            return;
 2763        }
 2764        let paths = self.prompt_for_open_path(
 2765            PathPromptOptions {
 2766                files: false,
 2767                directories: true,
 2768                multiple: true,
 2769                prompt: None,
 2770            },
 2771            DirectoryLister::Project(self.project.clone()),
 2772            window,
 2773            cx,
 2774        );
 2775        cx.spawn_in(window, async move |this, cx| {
 2776            if let Some(paths) = paths.await.log_err().flatten() {
 2777                let results = this
 2778                    .update_in(cx, |this, window, cx| {
 2779                        this.open_paths(
 2780                            paths,
 2781                            OpenOptions {
 2782                                visible: Some(OpenVisible::All),
 2783                                ..Default::default()
 2784                            },
 2785                            None,
 2786                            window,
 2787                            cx,
 2788                        )
 2789                    })?
 2790                    .await;
 2791                for result in results.into_iter().flatten() {
 2792                    result.log_err();
 2793                }
 2794            }
 2795            anyhow::Ok(())
 2796        })
 2797        .detach_and_log_err(cx);
 2798    }
 2799
 2800    pub fn project_path_for_path(
 2801        project: Entity<Project>,
 2802        abs_path: &Path,
 2803        visible: bool,
 2804        cx: &mut App,
 2805    ) -> Task<Result<(Entity<Worktree>, ProjectPath)>> {
 2806        let entry = project.update(cx, |project, cx| {
 2807            project.find_or_create_worktree(abs_path, visible, cx)
 2808        });
 2809        cx.spawn(async move |cx| {
 2810            let (worktree, path) = entry.await?;
 2811            let worktree_id = worktree.read_with(cx, |t, _| t.id())?;
 2812            Ok((
 2813                worktree,
 2814                ProjectPath {
 2815                    worktree_id,
 2816                    path: path,
 2817                },
 2818            ))
 2819        })
 2820    }
 2821
 2822    pub fn items<'a>(&'a self, cx: &'a App) -> impl 'a + Iterator<Item = &'a Box<dyn ItemHandle>> {
 2823        self.panes.iter().flat_map(|pane| pane.read(cx).items())
 2824    }
 2825
 2826    pub fn item_of_type<T: Item>(&self, cx: &App) -> Option<Entity<T>> {
 2827        self.items_of_type(cx).max_by_key(|item| item.item_id())
 2828    }
 2829
 2830    pub fn items_of_type<'a, T: Item>(
 2831        &'a self,
 2832        cx: &'a App,
 2833    ) -> impl 'a + Iterator<Item = Entity<T>> {
 2834        self.panes
 2835            .iter()
 2836            .flat_map(|pane| pane.read(cx).items_of_type())
 2837    }
 2838
 2839    pub fn active_item(&self, cx: &App) -> Option<Box<dyn ItemHandle>> {
 2840        self.active_pane().read(cx).active_item()
 2841    }
 2842
 2843    pub fn active_item_as<I: 'static>(&self, cx: &App) -> Option<Entity<I>> {
 2844        let item = self.active_item(cx)?;
 2845        item.to_any().downcast::<I>().ok()
 2846    }
 2847
 2848    fn active_project_path(&self, cx: &App) -> Option<ProjectPath> {
 2849        self.active_item(cx).and_then(|item| item.project_path(cx))
 2850    }
 2851
 2852    pub fn most_recent_active_path(&self, cx: &App) -> Option<PathBuf> {
 2853        self.recent_navigation_history_iter(cx)
 2854            .filter_map(|(path, abs_path)| {
 2855                let worktree = self
 2856                    .project
 2857                    .read(cx)
 2858                    .worktree_for_id(path.worktree_id, cx)?;
 2859                if worktree.read(cx).is_visible() {
 2860                    abs_path
 2861                } else {
 2862                    None
 2863                }
 2864            })
 2865            .next()
 2866    }
 2867
 2868    pub fn save_active_item(
 2869        &mut self,
 2870        save_intent: SaveIntent,
 2871        window: &mut Window,
 2872        cx: &mut App,
 2873    ) -> Task<Result<()>> {
 2874        let project = self.project.clone();
 2875        let pane = self.active_pane();
 2876        let item = pane.read(cx).active_item();
 2877        let pane = pane.downgrade();
 2878
 2879        window.spawn(cx, async move |cx| {
 2880            if let Some(item) = item {
 2881                Pane::save_item(project, &pane, item.as_ref(), save_intent, cx)
 2882                    .await
 2883                    .map(|_| ())
 2884            } else {
 2885                Ok(())
 2886            }
 2887        })
 2888    }
 2889
 2890    pub fn close_inactive_items_and_panes(
 2891        &mut self,
 2892        action: &CloseInactiveTabsAndPanes,
 2893        window: &mut Window,
 2894        cx: &mut Context<Self>,
 2895    ) {
 2896        if let Some(task) = self.close_all_internal(
 2897            true,
 2898            action.save_intent.unwrap_or(SaveIntent::Close),
 2899            window,
 2900            cx,
 2901        ) {
 2902            task.detach_and_log_err(cx)
 2903        }
 2904    }
 2905
 2906    pub fn close_all_items_and_panes(
 2907        &mut self,
 2908        action: &CloseAllItemsAndPanes,
 2909        window: &mut Window,
 2910        cx: &mut Context<Self>,
 2911    ) {
 2912        if let Some(task) = self.close_all_internal(
 2913            false,
 2914            action.save_intent.unwrap_or(SaveIntent::Close),
 2915            window,
 2916            cx,
 2917        ) {
 2918            task.detach_and_log_err(cx)
 2919        }
 2920    }
 2921
 2922    fn close_all_internal(
 2923        &mut self,
 2924        retain_active_pane: bool,
 2925        save_intent: SaveIntent,
 2926        window: &mut Window,
 2927        cx: &mut Context<Self>,
 2928    ) -> Option<Task<Result<()>>> {
 2929        let current_pane = self.active_pane();
 2930
 2931        let mut tasks = Vec::new();
 2932
 2933        if retain_active_pane {
 2934            let current_pane_close = current_pane.update(cx, |pane, cx| {
 2935                pane.close_other_items(
 2936                    &CloseOtherItems {
 2937                        save_intent: None,
 2938                        close_pinned: false,
 2939                    },
 2940                    None,
 2941                    window,
 2942                    cx,
 2943                )
 2944            });
 2945
 2946            tasks.push(current_pane_close);
 2947        }
 2948
 2949        for pane in self.panes() {
 2950            if retain_active_pane && pane.entity_id() == current_pane.entity_id() {
 2951                continue;
 2952            }
 2953
 2954            let close_pane_items = pane.update(cx, |pane: &mut Pane, cx| {
 2955                pane.close_all_items(
 2956                    &CloseAllItems {
 2957                        save_intent: Some(save_intent),
 2958                        close_pinned: false,
 2959                    },
 2960                    window,
 2961                    cx,
 2962                )
 2963            });
 2964
 2965            tasks.push(close_pane_items)
 2966        }
 2967
 2968        if tasks.is_empty() {
 2969            None
 2970        } else {
 2971            Some(cx.spawn_in(window, async move |_, _| {
 2972                for task in tasks {
 2973                    task.await?
 2974                }
 2975                Ok(())
 2976            }))
 2977        }
 2978    }
 2979
 2980    pub fn is_dock_at_position_open(&self, position: DockPosition, cx: &mut Context<Self>) -> bool {
 2981        self.dock_at_position(position).read(cx).is_open()
 2982    }
 2983
 2984    pub fn toggle_dock(
 2985        &mut self,
 2986        dock_side: DockPosition,
 2987        window: &mut Window,
 2988        cx: &mut Context<Self>,
 2989    ) {
 2990        let dock = self.dock_at_position(dock_side);
 2991        let mut focus_center = false;
 2992        let mut reveal_dock = false;
 2993        dock.update(cx, |dock, cx| {
 2994            let other_is_zoomed = self.zoomed.is_some() && self.zoomed_position != Some(dock_side);
 2995            let was_visible = dock.is_open() && !other_is_zoomed;
 2996            dock.set_open(!was_visible, window, cx);
 2997
 2998            if dock.active_panel().is_none() {
 2999                let Some(panel_ix) = dock
 3000                    .first_enabled_panel_idx(cx)
 3001                    .log_with_level(log::Level::Info)
 3002                else {
 3003                    return;
 3004                };
 3005                dock.activate_panel(panel_ix, window, cx);
 3006            }
 3007
 3008            if let Some(active_panel) = dock.active_panel() {
 3009                if was_visible {
 3010                    if active_panel
 3011                        .panel_focus_handle(cx)
 3012                        .contains_focused(window, cx)
 3013                    {
 3014                        focus_center = true;
 3015                    }
 3016                } else {
 3017                    let focus_handle = &active_panel.panel_focus_handle(cx);
 3018                    window.focus(focus_handle);
 3019                    reveal_dock = true;
 3020                }
 3021            }
 3022        });
 3023
 3024        if reveal_dock {
 3025            self.dismiss_zoomed_items_to_reveal(Some(dock_side), window, cx);
 3026        }
 3027
 3028        if focus_center {
 3029            self.active_pane
 3030                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3031        }
 3032
 3033        cx.notify();
 3034        self.serialize_workspace(window, cx);
 3035    }
 3036
 3037    fn active_dock(&self, window: &Window, cx: &Context<Self>) -> Option<&Entity<Dock>> {
 3038        self.all_docks().into_iter().find(|&dock| {
 3039            dock.read(cx).is_open() && dock.focus_handle(cx).contains_focused(window, cx)
 3040        })
 3041    }
 3042
 3043    fn close_active_dock(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
 3044        if let Some(dock) = self.active_dock(window, cx) {
 3045            dock.update(cx, |dock, cx| {
 3046                dock.set_open(false, window, cx);
 3047            });
 3048            return true;
 3049        }
 3050        false
 3051    }
 3052
 3053    pub fn close_all_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3054        for dock in self.all_docks() {
 3055            dock.update(cx, |dock, cx| {
 3056                dock.set_open(false, window, cx);
 3057            });
 3058        }
 3059
 3060        cx.focus_self(window);
 3061        cx.notify();
 3062        self.serialize_workspace(window, cx);
 3063    }
 3064
 3065    /// Transfer focus to the panel of the given type.
 3066    pub fn focus_panel<T: Panel>(
 3067        &mut self,
 3068        window: &mut Window,
 3069        cx: &mut Context<Self>,
 3070    ) -> Option<Entity<T>> {
 3071        let panel = self.focus_or_unfocus_panel::<T>(window, cx, |_, _, _| true)?;
 3072        panel.to_any().downcast().ok()
 3073    }
 3074
 3075    /// Focus the panel of the given type if it isn't already focused. If it is
 3076    /// already focused, then transfer focus back to the workspace center.
 3077    pub fn toggle_panel_focus<T: Panel>(
 3078        &mut self,
 3079        window: &mut Window,
 3080        cx: &mut Context<Self>,
 3081    ) -> bool {
 3082        let mut did_focus_panel = false;
 3083        self.focus_or_unfocus_panel::<T>(window, cx, |panel, window, cx| {
 3084            did_focus_panel = !panel.panel_focus_handle(cx).contains_focused(window, cx);
 3085            did_focus_panel
 3086        });
 3087        did_focus_panel
 3088    }
 3089
 3090    pub fn activate_panel_for_proto_id(
 3091        &mut self,
 3092        panel_id: PanelId,
 3093        window: &mut Window,
 3094        cx: &mut Context<Self>,
 3095    ) -> Option<Arc<dyn PanelHandle>> {
 3096        let mut panel = None;
 3097        for dock in self.all_docks() {
 3098            if let Some(panel_index) = dock.read(cx).panel_index_for_proto_id(panel_id) {
 3099                panel = dock.update(cx, |dock, cx| {
 3100                    dock.activate_panel(panel_index, window, cx);
 3101                    dock.set_open(true, window, cx);
 3102                    dock.active_panel().cloned()
 3103                });
 3104                break;
 3105            }
 3106        }
 3107
 3108        if panel.is_some() {
 3109            cx.notify();
 3110            self.serialize_workspace(window, cx);
 3111        }
 3112
 3113        panel
 3114    }
 3115
 3116    /// Focus or unfocus the given panel type, depending on the given callback.
 3117    fn focus_or_unfocus_panel<T: Panel>(
 3118        &mut self,
 3119        window: &mut Window,
 3120        cx: &mut Context<Self>,
 3121        mut should_focus: impl FnMut(&dyn PanelHandle, &mut Window, &mut Context<Dock>) -> bool,
 3122    ) -> Option<Arc<dyn PanelHandle>> {
 3123        let mut result_panel = None;
 3124        let mut serialize = false;
 3125        for dock in self.all_docks() {
 3126            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3127                let mut focus_center = false;
 3128                let panel = dock.update(cx, |dock, cx| {
 3129                    dock.activate_panel(panel_index, window, cx);
 3130
 3131                    let panel = dock.active_panel().cloned();
 3132                    if let Some(panel) = panel.as_ref() {
 3133                        if should_focus(&**panel, window, cx) {
 3134                            dock.set_open(true, window, cx);
 3135                            panel.panel_focus_handle(cx).focus(window);
 3136                        } else {
 3137                            focus_center = true;
 3138                        }
 3139                    }
 3140                    panel
 3141                });
 3142
 3143                if focus_center {
 3144                    self.active_pane
 3145                        .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3146                }
 3147
 3148                result_panel = panel;
 3149                serialize = true;
 3150                break;
 3151            }
 3152        }
 3153
 3154        if serialize {
 3155            self.serialize_workspace(window, cx);
 3156        }
 3157
 3158        cx.notify();
 3159        result_panel
 3160    }
 3161
 3162    /// Open the panel of the given type
 3163    pub fn open_panel<T: Panel>(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3164        for dock in self.all_docks() {
 3165            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3166                dock.update(cx, |dock, cx| {
 3167                    dock.activate_panel(panel_index, window, cx);
 3168                    dock.set_open(true, window, cx);
 3169                });
 3170            }
 3171        }
 3172    }
 3173
 3174    pub fn close_panel<T: Panel>(&self, window: &mut Window, cx: &mut Context<Self>) {
 3175        for dock in self.all_docks().iter() {
 3176            dock.update(cx, |dock, cx| {
 3177                if dock.panel::<T>().is_some() {
 3178                    dock.set_open(false, window, cx)
 3179                }
 3180            })
 3181        }
 3182    }
 3183
 3184    pub fn panel<T: Panel>(&self, cx: &App) -> Option<Entity<T>> {
 3185        self.all_docks()
 3186            .iter()
 3187            .find_map(|dock| dock.read(cx).panel::<T>())
 3188    }
 3189
 3190    fn dismiss_zoomed_items_to_reveal(
 3191        &mut self,
 3192        dock_to_reveal: Option<DockPosition>,
 3193        window: &mut Window,
 3194        cx: &mut Context<Self>,
 3195    ) {
 3196        // If a center pane is zoomed, unzoom it.
 3197        for pane in &self.panes {
 3198            if pane != &self.active_pane || dock_to_reveal.is_some() {
 3199                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 3200            }
 3201        }
 3202
 3203        // If another dock is zoomed, hide it.
 3204        let mut focus_center = false;
 3205        for dock in self.all_docks() {
 3206            dock.update(cx, |dock, cx| {
 3207                if Some(dock.position()) != dock_to_reveal
 3208                    && let Some(panel) = dock.active_panel()
 3209                    && panel.is_zoomed(window, cx)
 3210                {
 3211                    focus_center |= panel.panel_focus_handle(cx).contains_focused(window, cx);
 3212                    dock.set_open(false, window, cx);
 3213                }
 3214            });
 3215        }
 3216
 3217        if focus_center {
 3218            self.active_pane
 3219                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3220        }
 3221
 3222        if self.zoomed_position != dock_to_reveal {
 3223            self.zoomed = None;
 3224            self.zoomed_position = None;
 3225            cx.emit(Event::ZoomChanged);
 3226        }
 3227
 3228        cx.notify();
 3229    }
 3230
 3231    fn add_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 3232        let pane = cx.new(|cx| {
 3233            let mut pane = Pane::new(
 3234                self.weak_handle(),
 3235                self.project.clone(),
 3236                self.pane_history_timestamp.clone(),
 3237                None,
 3238                NewFile.boxed_clone(),
 3239                true,
 3240                window,
 3241                cx,
 3242            );
 3243            pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 3244            pane
 3245        });
 3246        cx.subscribe_in(&pane, window, Self::handle_pane_event)
 3247            .detach();
 3248        self.panes.push(pane.clone());
 3249
 3250        window.focus(&pane.focus_handle(cx));
 3251
 3252        cx.emit(Event::PaneAdded(pane.clone()));
 3253        pane
 3254    }
 3255
 3256    pub fn add_item_to_center(
 3257        &mut self,
 3258        item: Box<dyn ItemHandle>,
 3259        window: &mut Window,
 3260        cx: &mut Context<Self>,
 3261    ) -> bool {
 3262        if let Some(center_pane) = self.last_active_center_pane.clone() {
 3263            if let Some(center_pane) = center_pane.upgrade() {
 3264                center_pane.update(cx, |pane, cx| {
 3265                    pane.add_item(item, true, true, None, window, cx)
 3266                });
 3267                true
 3268            } else {
 3269                false
 3270            }
 3271        } else {
 3272            false
 3273        }
 3274    }
 3275
 3276    pub fn add_item_to_active_pane(
 3277        &mut self,
 3278        item: Box<dyn ItemHandle>,
 3279        destination_index: Option<usize>,
 3280        focus_item: bool,
 3281        window: &mut Window,
 3282        cx: &mut App,
 3283    ) {
 3284        self.add_item(
 3285            self.active_pane.clone(),
 3286            item,
 3287            destination_index,
 3288            false,
 3289            focus_item,
 3290            window,
 3291            cx,
 3292        )
 3293    }
 3294
 3295    pub fn add_item(
 3296        &mut self,
 3297        pane: Entity<Pane>,
 3298        item: Box<dyn ItemHandle>,
 3299        destination_index: Option<usize>,
 3300        activate_pane: bool,
 3301        focus_item: bool,
 3302        window: &mut Window,
 3303        cx: &mut App,
 3304    ) {
 3305        pane.update(cx, |pane, cx| {
 3306            pane.add_item(
 3307                item,
 3308                activate_pane,
 3309                focus_item,
 3310                destination_index,
 3311                window,
 3312                cx,
 3313            )
 3314        });
 3315    }
 3316
 3317    pub fn split_item(
 3318        &mut self,
 3319        split_direction: SplitDirection,
 3320        item: Box<dyn ItemHandle>,
 3321        window: &mut Window,
 3322        cx: &mut Context<Self>,
 3323    ) {
 3324        let new_pane = self.split_pane(self.active_pane.clone(), split_direction, window, cx);
 3325        self.add_item(new_pane, item, None, true, true, window, cx);
 3326    }
 3327
 3328    pub fn open_abs_path(
 3329        &mut self,
 3330        abs_path: PathBuf,
 3331        options: OpenOptions,
 3332        window: &mut Window,
 3333        cx: &mut Context<Self>,
 3334    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3335        cx.spawn_in(window, async move |workspace, cx| {
 3336            let open_paths_task_result = workspace
 3337                .update_in(cx, |workspace, window, cx| {
 3338                    workspace.open_paths(vec![abs_path.clone()], options, None, window, cx)
 3339                })
 3340                .with_context(|| format!("open abs path {abs_path:?} task spawn"))?
 3341                .await;
 3342            anyhow::ensure!(
 3343                open_paths_task_result.len() == 1,
 3344                "open abs path {abs_path:?} task returned incorrect number of results"
 3345            );
 3346            match open_paths_task_result
 3347                .into_iter()
 3348                .next()
 3349                .expect("ensured single task result")
 3350            {
 3351                Some(open_result) => {
 3352                    open_result.with_context(|| format!("open abs path {abs_path:?} task join"))
 3353                }
 3354                None => anyhow::bail!("open abs path {abs_path:?} task returned None"),
 3355            }
 3356        })
 3357    }
 3358
 3359    pub fn split_abs_path(
 3360        &mut self,
 3361        abs_path: PathBuf,
 3362        visible: bool,
 3363        window: &mut Window,
 3364        cx: &mut Context<Self>,
 3365    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3366        let project_path_task =
 3367            Workspace::project_path_for_path(self.project.clone(), &abs_path, visible, cx);
 3368        cx.spawn_in(window, async move |this, cx| {
 3369            let (_, path) = project_path_task.await?;
 3370            this.update_in(cx, |this, window, cx| this.split_path(path, window, cx))?
 3371                .await
 3372        })
 3373    }
 3374
 3375    pub fn open_path(
 3376        &mut self,
 3377        path: impl Into<ProjectPath>,
 3378        pane: Option<WeakEntity<Pane>>,
 3379        focus_item: bool,
 3380        window: &mut Window,
 3381        cx: &mut App,
 3382    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3383        self.open_path_preview(path, pane, focus_item, false, true, window, cx)
 3384    }
 3385
 3386    pub fn open_path_preview(
 3387        &mut self,
 3388        path: impl Into<ProjectPath>,
 3389        pane: Option<WeakEntity<Pane>>,
 3390        focus_item: bool,
 3391        allow_preview: bool,
 3392        activate: bool,
 3393        window: &mut Window,
 3394        cx: &mut App,
 3395    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3396        let pane = pane.unwrap_or_else(|| {
 3397            self.last_active_center_pane.clone().unwrap_or_else(|| {
 3398                self.panes
 3399                    .first()
 3400                    .expect("There must be an active pane")
 3401                    .downgrade()
 3402            })
 3403        });
 3404
 3405        let project_path = path.into();
 3406        let task = self.load_path(project_path.clone(), window, cx);
 3407        window.spawn(cx, async move |cx| {
 3408            let (project_entry_id, build_item) = task.await?;
 3409
 3410            pane.update_in(cx, |pane, window, cx| {
 3411                pane.open_item(
 3412                    project_entry_id,
 3413                    project_path,
 3414                    focus_item,
 3415                    allow_preview,
 3416                    activate,
 3417                    None,
 3418                    window,
 3419                    cx,
 3420                    build_item,
 3421                )
 3422            })
 3423        })
 3424    }
 3425
 3426    pub fn split_path(
 3427        &mut self,
 3428        path: impl Into<ProjectPath>,
 3429        window: &mut Window,
 3430        cx: &mut Context<Self>,
 3431    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3432        self.split_path_preview(path, false, None, window, cx)
 3433    }
 3434
 3435    pub fn split_path_preview(
 3436        &mut self,
 3437        path: impl Into<ProjectPath>,
 3438        allow_preview: bool,
 3439        split_direction: Option<SplitDirection>,
 3440        window: &mut Window,
 3441        cx: &mut Context<Self>,
 3442    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3443        let pane = self.last_active_center_pane.clone().unwrap_or_else(|| {
 3444            self.panes
 3445                .first()
 3446                .expect("There must be an active pane")
 3447                .downgrade()
 3448        });
 3449
 3450        if let Member::Pane(center_pane) = &self.center.root
 3451            && center_pane.read(cx).items_len() == 0
 3452        {
 3453            return self.open_path(path, Some(pane), true, window, cx);
 3454        }
 3455
 3456        let project_path = path.into();
 3457        let task = self.load_path(project_path.clone(), window, cx);
 3458        cx.spawn_in(window, async move |this, cx| {
 3459            let (project_entry_id, build_item) = task.await?;
 3460            this.update_in(cx, move |this, window, cx| -> Option<_> {
 3461                let pane = pane.upgrade()?;
 3462                let new_pane = this.split_pane(
 3463                    pane,
 3464                    split_direction.unwrap_or(SplitDirection::Right),
 3465                    window,
 3466                    cx,
 3467                );
 3468                new_pane.update(cx, |new_pane, cx| {
 3469                    Some(new_pane.open_item(
 3470                        project_entry_id,
 3471                        project_path,
 3472                        true,
 3473                        allow_preview,
 3474                        true,
 3475                        None,
 3476                        window,
 3477                        cx,
 3478                        build_item,
 3479                    ))
 3480                })
 3481            })
 3482            .map(|option| option.context("pane was dropped"))?
 3483        })
 3484    }
 3485
 3486    fn load_path(
 3487        &mut self,
 3488        path: ProjectPath,
 3489        window: &mut Window,
 3490        cx: &mut App,
 3491    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
 3492        let registry = cx.default_global::<ProjectItemRegistry>().clone();
 3493        registry.open_path(self.project(), &path, window, cx)
 3494    }
 3495
 3496    pub fn find_project_item<T>(
 3497        &self,
 3498        pane: &Entity<Pane>,
 3499        project_item: &Entity<T::Item>,
 3500        cx: &App,
 3501    ) -> Option<Entity<T>>
 3502    where
 3503        T: ProjectItem,
 3504    {
 3505        use project::ProjectItem as _;
 3506        let project_item = project_item.read(cx);
 3507        let entry_id = project_item.entry_id(cx);
 3508        let project_path = project_item.project_path(cx);
 3509
 3510        let mut item = None;
 3511        if let Some(entry_id) = entry_id {
 3512            item = pane.read(cx).item_for_entry(entry_id, cx);
 3513        }
 3514        if item.is_none()
 3515            && let Some(project_path) = project_path
 3516        {
 3517            item = pane.read(cx).item_for_path(project_path, cx);
 3518        }
 3519
 3520        item.and_then(|item| item.downcast::<T>())
 3521    }
 3522
 3523    pub fn is_project_item_open<T>(
 3524        &self,
 3525        pane: &Entity<Pane>,
 3526        project_item: &Entity<T::Item>,
 3527        cx: &App,
 3528    ) -> bool
 3529    where
 3530        T: ProjectItem,
 3531    {
 3532        self.find_project_item::<T>(pane, project_item, cx)
 3533            .is_some()
 3534    }
 3535
 3536    pub fn open_project_item<T>(
 3537        &mut self,
 3538        pane: Entity<Pane>,
 3539        project_item: Entity<T::Item>,
 3540        activate_pane: bool,
 3541        focus_item: bool,
 3542        window: &mut Window,
 3543        cx: &mut Context<Self>,
 3544    ) -> Entity<T>
 3545    where
 3546        T: ProjectItem,
 3547    {
 3548        if let Some(item) = self.find_project_item(&pane, &project_item, cx) {
 3549            self.activate_item(&item, activate_pane, focus_item, window, cx);
 3550            return item;
 3551        }
 3552
 3553        let item = pane.update(cx, |pane, cx| {
 3554            cx.new(|cx| {
 3555                T::for_project_item(self.project().clone(), Some(pane), project_item, window, cx)
 3556            })
 3557        });
 3558        let item_id = item.item_id();
 3559        let mut destination_index = None;
 3560        pane.update(cx, |pane, cx| {
 3561            if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation
 3562                && let Some(preview_item_id) = pane.preview_item_id()
 3563                && preview_item_id != item_id
 3564            {
 3565                destination_index = pane.close_current_preview_item(window, cx);
 3566            }
 3567            pane.set_preview_item_id(Some(item.item_id()), cx)
 3568        });
 3569
 3570        self.add_item(
 3571            pane,
 3572            Box::new(item.clone()),
 3573            destination_index,
 3574            activate_pane,
 3575            focus_item,
 3576            window,
 3577            cx,
 3578        );
 3579        item
 3580    }
 3581
 3582    pub fn open_shared_screen(
 3583        &mut self,
 3584        peer_id: PeerId,
 3585        window: &mut Window,
 3586        cx: &mut Context<Self>,
 3587    ) {
 3588        if let Some(shared_screen) =
 3589            self.shared_screen_for_peer(peer_id, &self.active_pane, window, cx)
 3590        {
 3591            self.active_pane.update(cx, |pane, cx| {
 3592                pane.add_item(Box::new(shared_screen), false, true, None, window, cx)
 3593            });
 3594        }
 3595    }
 3596
 3597    pub fn activate_item(
 3598        &mut self,
 3599        item: &dyn ItemHandle,
 3600        activate_pane: bool,
 3601        focus_item: bool,
 3602        window: &mut Window,
 3603        cx: &mut App,
 3604    ) -> bool {
 3605        let result = self.panes.iter().find_map(|pane| {
 3606            pane.read(cx)
 3607                .index_for_item(item)
 3608                .map(|ix| (pane.clone(), ix))
 3609        });
 3610        if let Some((pane, ix)) = result {
 3611            pane.update(cx, |pane, cx| {
 3612                pane.activate_item(ix, activate_pane, focus_item, window, cx)
 3613            });
 3614            true
 3615        } else {
 3616            false
 3617        }
 3618    }
 3619
 3620    fn activate_pane_at_index(
 3621        &mut self,
 3622        action: &ActivatePane,
 3623        window: &mut Window,
 3624        cx: &mut Context<Self>,
 3625    ) {
 3626        let panes = self.center.panes();
 3627        if let Some(pane) = panes.get(action.0).map(|p| (*p).clone()) {
 3628            window.focus(&pane.focus_handle(cx));
 3629        } else {
 3630            self.split_and_clone(self.active_pane.clone(), SplitDirection::Right, window, cx);
 3631        }
 3632    }
 3633
 3634    fn move_item_to_pane_at_index(
 3635        &mut self,
 3636        action: &MoveItemToPane,
 3637        window: &mut Window,
 3638        cx: &mut Context<Self>,
 3639    ) {
 3640        let panes = self.center.panes();
 3641        let destination = match panes.get(action.destination) {
 3642            Some(&destination) => destination.clone(),
 3643            None => {
 3644                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3645                    return;
 3646                }
 3647                let direction = SplitDirection::Right;
 3648                let split_off_pane = self
 3649                    .find_pane_in_direction(direction, cx)
 3650                    .unwrap_or_else(|| self.active_pane.clone());
 3651                let new_pane = self.add_pane(window, cx);
 3652                if self
 3653                    .center
 3654                    .split(&split_off_pane, &new_pane, direction)
 3655                    .log_err()
 3656                    .is_none()
 3657                {
 3658                    return;
 3659                };
 3660                new_pane
 3661            }
 3662        };
 3663
 3664        if action.clone {
 3665            clone_active_item(
 3666                self.database_id(),
 3667                &self.active_pane,
 3668                &destination,
 3669                action.focus,
 3670                window,
 3671                cx,
 3672            )
 3673        } else {
 3674            move_active_item(
 3675                &self.active_pane,
 3676                &destination,
 3677                action.focus,
 3678                true,
 3679                window,
 3680                cx,
 3681            )
 3682        }
 3683    }
 3684
 3685    pub fn activate_next_pane(&mut self, window: &mut Window, cx: &mut App) {
 3686        let panes = self.center.panes();
 3687        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3688            let next_ix = (ix + 1) % panes.len();
 3689            let next_pane = panes[next_ix].clone();
 3690            window.focus(&next_pane.focus_handle(cx));
 3691        }
 3692    }
 3693
 3694    pub fn activate_previous_pane(&mut self, window: &mut Window, cx: &mut App) {
 3695        let panes = self.center.panes();
 3696        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3697            let prev_ix = cmp::min(ix.wrapping_sub(1), panes.len() - 1);
 3698            let prev_pane = panes[prev_ix].clone();
 3699            window.focus(&prev_pane.focus_handle(cx));
 3700        }
 3701    }
 3702
 3703    pub fn activate_pane_in_direction(
 3704        &mut self,
 3705        direction: SplitDirection,
 3706        window: &mut Window,
 3707        cx: &mut App,
 3708    ) {
 3709        use ActivateInDirectionTarget as Target;
 3710        enum Origin {
 3711            LeftDock,
 3712            RightDock,
 3713            BottomDock,
 3714            Center,
 3715        }
 3716
 3717        let origin: Origin = [
 3718            (&self.left_dock, Origin::LeftDock),
 3719            (&self.right_dock, Origin::RightDock),
 3720            (&self.bottom_dock, Origin::BottomDock),
 3721        ]
 3722        .into_iter()
 3723        .find_map(|(dock, origin)| {
 3724            if dock.focus_handle(cx).contains_focused(window, cx) && dock.read(cx).is_open() {
 3725                Some(origin)
 3726            } else {
 3727                None
 3728            }
 3729        })
 3730        .unwrap_or(Origin::Center);
 3731
 3732        let get_last_active_pane = || {
 3733            let pane = self
 3734                .last_active_center_pane
 3735                .clone()
 3736                .unwrap_or_else(|| {
 3737                    self.panes
 3738                        .first()
 3739                        .expect("There must be an active pane")
 3740                        .downgrade()
 3741                })
 3742                .upgrade()?;
 3743            (pane.read(cx).items_len() != 0).then_some(pane)
 3744        };
 3745
 3746        let try_dock =
 3747            |dock: &Entity<Dock>| dock.read(cx).is_open().then(|| Target::Dock(dock.clone()));
 3748
 3749        let target = match (origin, direction) {
 3750            // We're in the center, so we first try to go to a different pane,
 3751            // otherwise try to go to a dock.
 3752            (Origin::Center, direction) => {
 3753                if let Some(pane) = self.find_pane_in_direction(direction, cx) {
 3754                    Some(Target::Pane(pane))
 3755                } else {
 3756                    match direction {
 3757                        SplitDirection::Up => None,
 3758                        SplitDirection::Down => try_dock(&self.bottom_dock),
 3759                        SplitDirection::Left => try_dock(&self.left_dock),
 3760                        SplitDirection::Right => try_dock(&self.right_dock),
 3761                    }
 3762                }
 3763            }
 3764
 3765            (Origin::LeftDock, SplitDirection::Right) => {
 3766                if let Some(last_active_pane) = get_last_active_pane() {
 3767                    Some(Target::Pane(last_active_pane))
 3768                } else {
 3769                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.right_dock))
 3770                }
 3771            }
 3772
 3773            (Origin::LeftDock, SplitDirection::Down)
 3774            | (Origin::RightDock, SplitDirection::Down) => try_dock(&self.bottom_dock),
 3775
 3776            (Origin::BottomDock, SplitDirection::Up) => get_last_active_pane().map(Target::Pane),
 3777            (Origin::BottomDock, SplitDirection::Left) => try_dock(&self.left_dock),
 3778            (Origin::BottomDock, SplitDirection::Right) => try_dock(&self.right_dock),
 3779
 3780            (Origin::RightDock, SplitDirection::Left) => {
 3781                if let Some(last_active_pane) = get_last_active_pane() {
 3782                    Some(Target::Pane(last_active_pane))
 3783                } else {
 3784                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.left_dock))
 3785                }
 3786            }
 3787
 3788            _ => None,
 3789        };
 3790
 3791        match target {
 3792            Some(ActivateInDirectionTarget::Pane(pane)) => {
 3793                let pane = pane.read(cx);
 3794                if let Some(item) = pane.active_item() {
 3795                    item.item_focus_handle(cx).focus(window);
 3796                } else {
 3797                    log::error!(
 3798                        "Could not find a focus target when in switching focus in {direction} direction for a pane",
 3799                    );
 3800                }
 3801            }
 3802            Some(ActivateInDirectionTarget::Dock(dock)) => {
 3803                // Defer this to avoid a panic when the dock's active panel is already on the stack.
 3804                window.defer(cx, move |window, cx| {
 3805                    let dock = dock.read(cx);
 3806                    if let Some(panel) = dock.active_panel() {
 3807                        panel.panel_focus_handle(cx).focus(window);
 3808                    } else {
 3809                        log::error!("Could not find a focus target when in switching focus in {direction} direction for a {:?} dock", dock.position());
 3810                    }
 3811                })
 3812            }
 3813            None => {}
 3814        }
 3815    }
 3816
 3817    pub fn move_item_to_pane_in_direction(
 3818        &mut self,
 3819        action: &MoveItemToPaneInDirection,
 3820        window: &mut Window,
 3821        cx: &mut Context<Self>,
 3822    ) {
 3823        let destination = match self.find_pane_in_direction(action.direction, cx) {
 3824            Some(destination) => destination,
 3825            None => {
 3826                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3827                    return;
 3828                }
 3829                let new_pane = self.add_pane(window, cx);
 3830                if self
 3831                    .center
 3832                    .split(&self.active_pane, &new_pane, action.direction)
 3833                    .log_err()
 3834                    .is_none()
 3835                {
 3836                    return;
 3837                };
 3838                new_pane
 3839            }
 3840        };
 3841
 3842        if action.clone {
 3843            clone_active_item(
 3844                self.database_id(),
 3845                &self.active_pane,
 3846                &destination,
 3847                action.focus,
 3848                window,
 3849                cx,
 3850            )
 3851        } else {
 3852            move_active_item(
 3853                &self.active_pane,
 3854                &destination,
 3855                action.focus,
 3856                true,
 3857                window,
 3858                cx,
 3859            );
 3860        }
 3861    }
 3862
 3863    pub fn bounding_box_for_pane(&self, pane: &Entity<Pane>) -> Option<Bounds<Pixels>> {
 3864        self.center.bounding_box_for_pane(pane)
 3865    }
 3866
 3867    pub fn find_pane_in_direction(
 3868        &mut self,
 3869        direction: SplitDirection,
 3870        cx: &App,
 3871    ) -> Option<Entity<Pane>> {
 3872        self.center
 3873            .find_pane_in_direction(&self.active_pane, direction, cx)
 3874            .cloned()
 3875    }
 3876
 3877    pub fn swap_pane_in_direction(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 3878        if let Some(to) = self.find_pane_in_direction(direction, cx) {
 3879            self.center.swap(&self.active_pane, &to);
 3880            cx.notify();
 3881        }
 3882    }
 3883
 3884    pub fn move_pane_to_border(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 3885        if self
 3886            .center
 3887            .move_to_border(&self.active_pane, direction)
 3888            .unwrap()
 3889        {
 3890            cx.notify();
 3891        }
 3892    }
 3893
 3894    pub fn resize_pane(
 3895        &mut self,
 3896        axis: gpui::Axis,
 3897        amount: Pixels,
 3898        window: &mut Window,
 3899        cx: &mut Context<Self>,
 3900    ) {
 3901        let docks = self.all_docks();
 3902        let active_dock = docks
 3903            .into_iter()
 3904            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 3905
 3906        if let Some(dock) = active_dock {
 3907            let Some(panel_size) = dock.read(cx).active_panel_size(window, cx) else {
 3908                return;
 3909            };
 3910            match dock.read(cx).position() {
 3911                DockPosition::Left => self.resize_left_dock(panel_size + amount, window, cx),
 3912                DockPosition::Bottom => self.resize_bottom_dock(panel_size + amount, window, cx),
 3913                DockPosition::Right => self.resize_right_dock(panel_size + amount, window, cx),
 3914            }
 3915        } else {
 3916            self.center
 3917                .resize(&self.active_pane, axis, amount, &self.bounds);
 3918        }
 3919        cx.notify();
 3920    }
 3921
 3922    pub fn reset_pane_sizes(&mut self, cx: &mut Context<Self>) {
 3923        self.center.reset_pane_sizes();
 3924        cx.notify();
 3925    }
 3926
 3927    fn handle_pane_focused(
 3928        &mut self,
 3929        pane: Entity<Pane>,
 3930        window: &mut Window,
 3931        cx: &mut Context<Self>,
 3932    ) {
 3933        // This is explicitly hoisted out of the following check for pane identity as
 3934        // terminal panel panes are not registered as a center panes.
 3935        self.status_bar.update(cx, |status_bar, cx| {
 3936            status_bar.set_active_pane(&pane, window, cx);
 3937        });
 3938        if self.active_pane != pane {
 3939            self.set_active_pane(&pane, window, cx);
 3940        }
 3941
 3942        if self.last_active_center_pane.is_none() {
 3943            self.last_active_center_pane = Some(pane.downgrade());
 3944        }
 3945
 3946        self.dismiss_zoomed_items_to_reveal(None, window, cx);
 3947        if pane.read(cx).is_zoomed() {
 3948            self.zoomed = Some(pane.downgrade().into());
 3949        } else {
 3950            self.zoomed = None;
 3951        }
 3952        self.zoomed_position = None;
 3953        cx.emit(Event::ZoomChanged);
 3954        self.update_active_view_for_followers(window, cx);
 3955        pane.update(cx, |pane, _| {
 3956            pane.track_alternate_file_items();
 3957        });
 3958
 3959        cx.notify();
 3960    }
 3961
 3962    fn set_active_pane(
 3963        &mut self,
 3964        pane: &Entity<Pane>,
 3965        window: &mut Window,
 3966        cx: &mut Context<Self>,
 3967    ) {
 3968        self.active_pane = pane.clone();
 3969        self.active_item_path_changed(window, cx);
 3970        self.last_active_center_pane = Some(pane.downgrade());
 3971    }
 3972
 3973    fn handle_panel_focused(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3974        self.update_active_view_for_followers(window, cx);
 3975    }
 3976
 3977    fn handle_pane_event(
 3978        &mut self,
 3979        pane: &Entity<Pane>,
 3980        event: &pane::Event,
 3981        window: &mut Window,
 3982        cx: &mut Context<Self>,
 3983    ) {
 3984        let mut serialize_workspace = true;
 3985        match event {
 3986            pane::Event::AddItem { item } => {
 3987                item.added_to_pane(self, pane.clone(), window, cx);
 3988                cx.emit(Event::ItemAdded {
 3989                    item: item.boxed_clone(),
 3990                });
 3991            }
 3992            pane::Event::Split {
 3993                direction,
 3994                clone_active_item,
 3995            } => {
 3996                if *clone_active_item {
 3997                    self.split_and_clone(pane.clone(), *direction, window, cx);
 3998                } else {
 3999                    self.split_and_move(pane.clone(), *direction, window, cx);
 4000                }
 4001            }
 4002            pane::Event::JoinIntoNext => {
 4003                self.join_pane_into_next(pane.clone(), window, cx);
 4004            }
 4005            pane::Event::JoinAll => {
 4006                self.join_all_panes(window, cx);
 4007            }
 4008            pane::Event::Remove { focus_on_pane } => {
 4009                self.remove_pane(pane.clone(), focus_on_pane.clone(), window, cx);
 4010            }
 4011            pane::Event::ActivateItem {
 4012                local,
 4013                focus_changed,
 4014            } => {
 4015                window.invalidate_character_coordinates();
 4016
 4017                pane.update(cx, |pane, _| {
 4018                    pane.track_alternate_file_items();
 4019                });
 4020                if *local {
 4021                    self.unfollow_in_pane(pane, window, cx);
 4022                }
 4023                serialize_workspace = *focus_changed || pane != self.active_pane();
 4024                if pane == self.active_pane() {
 4025                    self.active_item_path_changed(window, cx);
 4026                    self.update_active_view_for_followers(window, cx);
 4027                } else if *local {
 4028                    self.set_active_pane(pane, window, cx);
 4029                }
 4030            }
 4031            pane::Event::UserSavedItem { item, save_intent } => {
 4032                cx.emit(Event::UserSavedItem {
 4033                    pane: pane.downgrade(),
 4034                    item: item.boxed_clone(),
 4035                    save_intent: *save_intent,
 4036                });
 4037                serialize_workspace = false;
 4038            }
 4039            pane::Event::ChangeItemTitle => {
 4040                if *pane == self.active_pane {
 4041                    self.active_item_path_changed(window, cx);
 4042                }
 4043                serialize_workspace = false;
 4044            }
 4045            pane::Event::RemovedItem { item } => {
 4046                cx.emit(Event::ActiveItemChanged);
 4047                self.update_window_edited(window, cx);
 4048                if let hash_map::Entry::Occupied(entry) = self.panes_by_item.entry(item.item_id())
 4049                    && entry.get().entity_id() == pane.entity_id()
 4050                {
 4051                    entry.remove();
 4052                }
 4053                cx.emit(Event::ItemRemoved {
 4054                    item_id: item.item_id(),
 4055                });
 4056            }
 4057            pane::Event::Focus => {
 4058                window.invalidate_character_coordinates();
 4059                self.handle_pane_focused(pane.clone(), window, cx);
 4060            }
 4061            pane::Event::ZoomIn => {
 4062                if *pane == self.active_pane {
 4063                    pane.update(cx, |pane, cx| pane.set_zoomed(true, cx));
 4064                    if pane.read(cx).has_focus(window, cx) {
 4065                        self.zoomed = Some(pane.downgrade().into());
 4066                        self.zoomed_position = None;
 4067                        cx.emit(Event::ZoomChanged);
 4068                    }
 4069                    cx.notify();
 4070                }
 4071            }
 4072            pane::Event::ZoomOut => {
 4073                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 4074                if self.zoomed_position.is_none() {
 4075                    self.zoomed = None;
 4076                    cx.emit(Event::ZoomChanged);
 4077                }
 4078                cx.notify();
 4079            }
 4080            pane::Event::ItemPinned | pane::Event::ItemUnpinned => {}
 4081        }
 4082
 4083        if serialize_workspace {
 4084            self.serialize_workspace(window, cx);
 4085        }
 4086    }
 4087
 4088    pub fn unfollow_in_pane(
 4089        &mut self,
 4090        pane: &Entity<Pane>,
 4091        window: &mut Window,
 4092        cx: &mut Context<Workspace>,
 4093    ) -> Option<CollaboratorId> {
 4094        let leader_id = self.leader_for_pane(pane)?;
 4095        self.unfollow(leader_id, window, cx);
 4096        Some(leader_id)
 4097    }
 4098
 4099    pub fn split_pane(
 4100        &mut self,
 4101        pane_to_split: Entity<Pane>,
 4102        split_direction: SplitDirection,
 4103        window: &mut Window,
 4104        cx: &mut Context<Self>,
 4105    ) -> Entity<Pane> {
 4106        let new_pane = self.add_pane(window, cx);
 4107        self.center
 4108            .split(&pane_to_split, &new_pane, split_direction)
 4109            .unwrap();
 4110        cx.notify();
 4111        new_pane
 4112    }
 4113
 4114    pub fn split_and_move(
 4115        &mut self,
 4116        pane: Entity<Pane>,
 4117        direction: SplitDirection,
 4118        window: &mut Window,
 4119        cx: &mut Context<Self>,
 4120    ) {
 4121        let Some(item) = pane.update(cx, |pane, cx| pane.take_active_item(window, cx)) else {
 4122            return;
 4123        };
 4124        let new_pane = self.add_pane(window, cx);
 4125        new_pane.update(cx, |pane, cx| {
 4126            pane.add_item(item, true, true, None, window, cx)
 4127        });
 4128        self.center.split(&pane, &new_pane, direction).unwrap();
 4129        cx.notify();
 4130    }
 4131
 4132    pub fn split_and_clone(
 4133        &mut self,
 4134        pane: Entity<Pane>,
 4135        direction: SplitDirection,
 4136        window: &mut Window,
 4137        cx: &mut Context<Self>,
 4138    ) -> Option<Entity<Pane>> {
 4139        let item = pane.read(cx).active_item()?;
 4140        let maybe_pane_handle =
 4141            if let Some(clone) = item.clone_on_split(self.database_id(), window, cx) {
 4142                let new_pane = self.add_pane(window, cx);
 4143                new_pane.update(cx, |pane, cx| {
 4144                    pane.add_item(clone, true, true, None, window, cx)
 4145                });
 4146                self.center.split(&pane, &new_pane, direction).unwrap();
 4147                cx.notify();
 4148                Some(new_pane)
 4149            } else {
 4150                None
 4151            };
 4152        maybe_pane_handle
 4153    }
 4154
 4155    pub fn join_all_panes(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4156        let active_item = self.active_pane.read(cx).active_item();
 4157        for pane in &self.panes {
 4158            join_pane_into_active(&self.active_pane, pane, window, cx);
 4159        }
 4160        if let Some(active_item) = active_item {
 4161            self.activate_item(active_item.as_ref(), true, true, window, cx);
 4162        }
 4163        cx.notify();
 4164    }
 4165
 4166    pub fn join_pane_into_next(
 4167        &mut self,
 4168        pane: Entity<Pane>,
 4169        window: &mut Window,
 4170        cx: &mut Context<Self>,
 4171    ) {
 4172        let next_pane = self
 4173            .find_pane_in_direction(SplitDirection::Right, cx)
 4174            .or_else(|| self.find_pane_in_direction(SplitDirection::Down, cx))
 4175            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4176            .or_else(|| self.find_pane_in_direction(SplitDirection::Up, cx));
 4177        let Some(next_pane) = next_pane else {
 4178            return;
 4179        };
 4180        move_all_items(&pane, &next_pane, window, cx);
 4181        cx.notify();
 4182    }
 4183
 4184    fn remove_pane(
 4185        &mut self,
 4186        pane: Entity<Pane>,
 4187        focus_on: Option<Entity<Pane>>,
 4188        window: &mut Window,
 4189        cx: &mut Context<Self>,
 4190    ) {
 4191        if self.center.remove(&pane).unwrap() {
 4192            self.force_remove_pane(&pane, &focus_on, window, cx);
 4193            self.unfollow_in_pane(&pane, window, cx);
 4194            self.last_leaders_by_pane.remove(&pane.downgrade());
 4195            for removed_item in pane.read(cx).items() {
 4196                self.panes_by_item.remove(&removed_item.item_id());
 4197            }
 4198
 4199            cx.notify();
 4200        } else {
 4201            self.active_item_path_changed(window, cx);
 4202        }
 4203        cx.emit(Event::PaneRemoved);
 4204    }
 4205
 4206    pub fn panes(&self) -> &[Entity<Pane>] {
 4207        &self.panes
 4208    }
 4209
 4210    pub fn active_pane(&self) -> &Entity<Pane> {
 4211        &self.active_pane
 4212    }
 4213
 4214    pub fn focused_pane(&self, window: &Window, cx: &App) -> Entity<Pane> {
 4215        for dock in self.all_docks() {
 4216            if dock.focus_handle(cx).contains_focused(window, cx)
 4217                && let Some(pane) = dock
 4218                    .read(cx)
 4219                    .active_panel()
 4220                    .and_then(|panel| panel.pane(cx))
 4221            {
 4222                return pane;
 4223            }
 4224        }
 4225        self.active_pane().clone()
 4226    }
 4227
 4228    pub fn adjacent_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 4229        self.find_pane_in_direction(SplitDirection::Right, cx)
 4230            .unwrap_or_else(|| {
 4231                self.split_pane(self.active_pane.clone(), SplitDirection::Right, window, cx)
 4232            })
 4233    }
 4234
 4235    pub fn pane_for(&self, handle: &dyn ItemHandle) -> Option<Entity<Pane>> {
 4236        let weak_pane = self.panes_by_item.get(&handle.item_id())?;
 4237        weak_pane.upgrade()
 4238    }
 4239
 4240    fn collaborator_left(&mut self, peer_id: PeerId, window: &mut Window, cx: &mut Context<Self>) {
 4241        self.follower_states.retain(|leader_id, state| {
 4242            if *leader_id == CollaboratorId::PeerId(peer_id) {
 4243                for item in state.items_by_leader_view_id.values() {
 4244                    item.view.set_leader_id(None, window, cx);
 4245                }
 4246                false
 4247            } else {
 4248                true
 4249            }
 4250        });
 4251        cx.notify();
 4252    }
 4253
 4254    pub fn start_following(
 4255        &mut self,
 4256        leader_id: impl Into<CollaboratorId>,
 4257        window: &mut Window,
 4258        cx: &mut Context<Self>,
 4259    ) -> Option<Task<Result<()>>> {
 4260        let leader_id = leader_id.into();
 4261        let pane = self.active_pane().clone();
 4262
 4263        self.last_leaders_by_pane
 4264            .insert(pane.downgrade(), leader_id);
 4265        self.unfollow(leader_id, window, cx);
 4266        self.unfollow_in_pane(&pane, window, cx);
 4267        self.follower_states.insert(
 4268            leader_id,
 4269            FollowerState {
 4270                center_pane: pane.clone(),
 4271                dock_pane: None,
 4272                active_view_id: None,
 4273                items_by_leader_view_id: Default::default(),
 4274            },
 4275        );
 4276        cx.notify();
 4277
 4278        match leader_id {
 4279            CollaboratorId::PeerId(leader_peer_id) => {
 4280                let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4281                let project_id = self.project.read(cx).remote_id();
 4282                let request = self.app_state.client.request(proto::Follow {
 4283                    room_id,
 4284                    project_id,
 4285                    leader_id: Some(leader_peer_id),
 4286                });
 4287
 4288                Some(cx.spawn_in(window, async move |this, cx| {
 4289                    let response = request.await?;
 4290                    this.update(cx, |this, _| {
 4291                        let state = this
 4292                            .follower_states
 4293                            .get_mut(&leader_id)
 4294                            .context("following interrupted")?;
 4295                        state.active_view_id = response
 4296                            .active_view
 4297                            .as_ref()
 4298                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4299                        anyhow::Ok(())
 4300                    })??;
 4301                    if let Some(view) = response.active_view {
 4302                        Self::add_view_from_leader(this.clone(), leader_peer_id, &view, cx).await?;
 4303                    }
 4304                    this.update_in(cx, |this, window, cx| {
 4305                        this.leader_updated(leader_id, window, cx)
 4306                    })?;
 4307                    Ok(())
 4308                }))
 4309            }
 4310            CollaboratorId::Agent => {
 4311                self.leader_updated(leader_id, window, cx)?;
 4312                Some(Task::ready(Ok(())))
 4313            }
 4314        }
 4315    }
 4316
 4317    pub fn follow_next_collaborator(
 4318        &mut self,
 4319        _: &FollowNextCollaborator,
 4320        window: &mut Window,
 4321        cx: &mut Context<Self>,
 4322    ) {
 4323        let collaborators = self.project.read(cx).collaborators();
 4324        let next_leader_id = if let Some(leader_id) = self.leader_for_pane(&self.active_pane) {
 4325            let mut collaborators = collaborators.keys().copied();
 4326            for peer_id in collaborators.by_ref() {
 4327                if CollaboratorId::PeerId(peer_id) == leader_id {
 4328                    break;
 4329                }
 4330            }
 4331            collaborators.next().map(CollaboratorId::PeerId)
 4332        } else if let Some(last_leader_id) =
 4333            self.last_leaders_by_pane.get(&self.active_pane.downgrade())
 4334        {
 4335            match last_leader_id {
 4336                CollaboratorId::PeerId(peer_id) => {
 4337                    if collaborators.contains_key(peer_id) {
 4338                        Some(*last_leader_id)
 4339                    } else {
 4340                        None
 4341                    }
 4342                }
 4343                CollaboratorId::Agent => Some(CollaboratorId::Agent),
 4344            }
 4345        } else {
 4346            None
 4347        };
 4348
 4349        let pane = self.active_pane.clone();
 4350        let Some(leader_id) = next_leader_id.or_else(|| {
 4351            Some(CollaboratorId::PeerId(
 4352                collaborators.keys().copied().next()?,
 4353            ))
 4354        }) else {
 4355            return;
 4356        };
 4357        if self.unfollow_in_pane(&pane, window, cx) == Some(leader_id) {
 4358            return;
 4359        }
 4360        if let Some(task) = self.start_following(leader_id, window, cx) {
 4361            task.detach_and_log_err(cx)
 4362        }
 4363    }
 4364
 4365    pub fn follow(
 4366        &mut self,
 4367        leader_id: impl Into<CollaboratorId>,
 4368        window: &mut Window,
 4369        cx: &mut Context<Self>,
 4370    ) {
 4371        let leader_id = leader_id.into();
 4372
 4373        if let CollaboratorId::PeerId(peer_id) = leader_id {
 4374            let Some(room) = ActiveCall::global(cx).read(cx).room() else {
 4375                return;
 4376            };
 4377            let room = room.read(cx);
 4378            let Some(remote_participant) = room.remote_participant_for_peer_id(peer_id) else {
 4379                return;
 4380            };
 4381
 4382            let project = self.project.read(cx);
 4383
 4384            let other_project_id = match remote_participant.location {
 4385                call::ParticipantLocation::External => None,
 4386                call::ParticipantLocation::UnsharedProject => None,
 4387                call::ParticipantLocation::SharedProject { project_id } => {
 4388                    if Some(project_id) == project.remote_id() {
 4389                        None
 4390                    } else {
 4391                        Some(project_id)
 4392                    }
 4393                }
 4394            };
 4395
 4396            // if they are active in another project, follow there.
 4397            if let Some(project_id) = other_project_id {
 4398                let app_state = self.app_state.clone();
 4399                crate::join_in_room_project(project_id, remote_participant.user.id, app_state, cx)
 4400                    .detach_and_log_err(cx);
 4401            }
 4402        }
 4403
 4404        // if you're already following, find the right pane and focus it.
 4405        if let Some(follower_state) = self.follower_states.get(&leader_id) {
 4406            window.focus(&follower_state.pane().focus_handle(cx));
 4407
 4408            return;
 4409        }
 4410
 4411        // Otherwise, follow.
 4412        if let Some(task) = self.start_following(leader_id, window, cx) {
 4413            task.detach_and_log_err(cx)
 4414        }
 4415    }
 4416
 4417    pub fn unfollow(
 4418        &mut self,
 4419        leader_id: impl Into<CollaboratorId>,
 4420        window: &mut Window,
 4421        cx: &mut Context<Self>,
 4422    ) -> Option<()> {
 4423        cx.notify();
 4424
 4425        let leader_id = leader_id.into();
 4426        let state = self.follower_states.remove(&leader_id)?;
 4427        for (_, item) in state.items_by_leader_view_id {
 4428            item.view.set_leader_id(None, window, cx);
 4429        }
 4430
 4431        if let CollaboratorId::PeerId(leader_peer_id) = leader_id {
 4432            let project_id = self.project.read(cx).remote_id();
 4433            let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4434            self.app_state
 4435                .client
 4436                .send(proto::Unfollow {
 4437                    room_id,
 4438                    project_id,
 4439                    leader_id: Some(leader_peer_id),
 4440                })
 4441                .log_err();
 4442        }
 4443
 4444        Some(())
 4445    }
 4446
 4447    pub fn is_being_followed(&self, id: impl Into<CollaboratorId>) -> bool {
 4448        self.follower_states.contains_key(&id.into())
 4449    }
 4450
 4451    fn active_item_path_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4452        cx.emit(Event::ActiveItemChanged);
 4453        let active_entry = self.active_project_path(cx);
 4454        self.project.update(cx, |project, cx| {
 4455            project.set_active_path(active_entry.clone(), cx)
 4456        });
 4457
 4458        if let Some(project_path) = &active_entry {
 4459            let git_store_entity = self.project.read(cx).git_store().clone();
 4460            git_store_entity.update(cx, |git_store, cx| {
 4461                git_store.set_active_repo_for_path(project_path, cx);
 4462            });
 4463        }
 4464
 4465        self.update_window_title(window, cx);
 4466    }
 4467
 4468    fn update_window_title(&mut self, window: &mut Window, cx: &mut App) {
 4469        let project = self.project().read(cx);
 4470        let mut title = String::new();
 4471
 4472        for (i, worktree) in project.visible_worktrees(cx).enumerate() {
 4473            let name = {
 4474                let settings_location = SettingsLocation {
 4475                    worktree_id: worktree.read(cx).id(),
 4476                    path: RelPath::empty(),
 4477                };
 4478
 4479                let settings = WorktreeSettings::get(Some(settings_location), cx);
 4480                match &settings.project_name {
 4481                    Some(name) => name.as_str(),
 4482                    None => worktree.read(cx).root_name_str(),
 4483                }
 4484            };
 4485            if i > 0 {
 4486                title.push_str(", ");
 4487            }
 4488            title.push_str(name);
 4489        }
 4490
 4491        if title.is_empty() {
 4492            title = "empty project".to_string();
 4493        }
 4494
 4495        if let Some(path) = self.active_item(cx).and_then(|item| item.project_path(cx)) {
 4496            let filename = path.path.file_name().or_else(|| {
 4497                Some(
 4498                    project
 4499                        .worktree_for_id(path.worktree_id, cx)?
 4500                        .read(cx)
 4501                        .root_name_str(),
 4502                )
 4503            });
 4504
 4505            if let Some(filename) = filename {
 4506                title.push_str("");
 4507                title.push_str(filename.as_ref());
 4508            }
 4509        }
 4510
 4511        if project.is_via_collab() {
 4512            title.push_str("");
 4513        } else if project.is_shared() {
 4514            title.push_str("");
 4515        }
 4516
 4517        if let Some(last_title) = self.last_window_title.as_ref()
 4518            && &title == last_title
 4519        {
 4520            return;
 4521        }
 4522        window.set_window_title(&title);
 4523        SystemWindowTabController::update_tab_title(
 4524            cx,
 4525            window.window_handle().window_id(),
 4526            SharedString::from(&title),
 4527        );
 4528        self.last_window_title = Some(title);
 4529    }
 4530
 4531    fn update_window_edited(&mut self, window: &mut Window, cx: &mut App) {
 4532        let is_edited = !self.project.read(cx).is_disconnected(cx) && !self.dirty_items.is_empty();
 4533        if is_edited != self.window_edited {
 4534            self.window_edited = is_edited;
 4535            window.set_window_edited(self.window_edited)
 4536        }
 4537    }
 4538
 4539    fn update_item_dirty_state(
 4540        &mut self,
 4541        item: &dyn ItemHandle,
 4542        window: &mut Window,
 4543        cx: &mut App,
 4544    ) {
 4545        let is_dirty = item.is_dirty(cx);
 4546        let item_id = item.item_id();
 4547        let was_dirty = self.dirty_items.contains_key(&item_id);
 4548        if is_dirty == was_dirty {
 4549            return;
 4550        }
 4551        if was_dirty {
 4552            self.dirty_items.remove(&item_id);
 4553            self.update_window_edited(window, cx);
 4554            return;
 4555        }
 4556        if let Some(window_handle) = window.window_handle().downcast::<Self>() {
 4557            let s = item.on_release(
 4558                cx,
 4559                Box::new(move |cx| {
 4560                    window_handle
 4561                        .update(cx, |this, window, cx| {
 4562                            this.dirty_items.remove(&item_id);
 4563                            this.update_window_edited(window, cx)
 4564                        })
 4565                        .ok();
 4566                }),
 4567            );
 4568            self.dirty_items.insert(item_id, s);
 4569            self.update_window_edited(window, cx);
 4570        }
 4571    }
 4572
 4573    fn render_notifications(&self, _window: &mut Window, _cx: &mut Context<Self>) -> Option<Div> {
 4574        if self.notifications.is_empty() {
 4575            None
 4576        } else {
 4577            Some(
 4578                div()
 4579                    .absolute()
 4580                    .right_3()
 4581                    .bottom_3()
 4582                    .w_112()
 4583                    .h_full()
 4584                    .flex()
 4585                    .flex_col()
 4586                    .justify_end()
 4587                    .gap_2()
 4588                    .children(
 4589                        self.notifications
 4590                            .iter()
 4591                            .map(|(_, notification)| notification.clone().into_any()),
 4592                    ),
 4593            )
 4594        }
 4595    }
 4596
 4597    // RPC handlers
 4598
 4599    fn active_view_for_follower(
 4600        &self,
 4601        follower_project_id: Option<u64>,
 4602        window: &mut Window,
 4603        cx: &mut Context<Self>,
 4604    ) -> Option<proto::View> {
 4605        let (item, panel_id) = self.active_item_for_followers(window, cx);
 4606        let item = item?;
 4607        let leader_id = self
 4608            .pane_for(&*item)
 4609            .and_then(|pane| self.leader_for_pane(&pane));
 4610        let leader_peer_id = match leader_id {
 4611            Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4612            Some(CollaboratorId::Agent) | None => None,
 4613        };
 4614
 4615        let item_handle = item.to_followable_item_handle(cx)?;
 4616        let id = item_handle.remote_id(&self.app_state.client, window, cx)?;
 4617        let variant = item_handle.to_state_proto(window, cx)?;
 4618
 4619        if item_handle.is_project_item(window, cx)
 4620            && (follower_project_id.is_none()
 4621                || follower_project_id != self.project.read(cx).remote_id())
 4622        {
 4623            return None;
 4624        }
 4625
 4626        Some(proto::View {
 4627            id: id.to_proto(),
 4628            leader_id: leader_peer_id,
 4629            variant: Some(variant),
 4630            panel_id: panel_id.map(|id| id as i32),
 4631        })
 4632    }
 4633
 4634    fn handle_follow(
 4635        &mut self,
 4636        follower_project_id: Option<u64>,
 4637        window: &mut Window,
 4638        cx: &mut Context<Self>,
 4639    ) -> proto::FollowResponse {
 4640        let active_view = self.active_view_for_follower(follower_project_id, window, cx);
 4641
 4642        cx.notify();
 4643        proto::FollowResponse {
 4644            // TODO: Remove after version 0.145.x stabilizes.
 4645            active_view_id: active_view.as_ref().and_then(|view| view.id.clone()),
 4646            views: active_view.iter().cloned().collect(),
 4647            active_view,
 4648        }
 4649    }
 4650
 4651    fn handle_update_followers(
 4652        &mut self,
 4653        leader_id: PeerId,
 4654        message: proto::UpdateFollowers,
 4655        _window: &mut Window,
 4656        _cx: &mut Context<Self>,
 4657    ) {
 4658        self.leader_updates_tx
 4659            .unbounded_send((leader_id, message))
 4660            .ok();
 4661    }
 4662
 4663    async fn process_leader_update(
 4664        this: &WeakEntity<Self>,
 4665        leader_id: PeerId,
 4666        update: proto::UpdateFollowers,
 4667        cx: &mut AsyncWindowContext,
 4668    ) -> Result<()> {
 4669        match update.variant.context("invalid update")? {
 4670            proto::update_followers::Variant::CreateView(view) => {
 4671                let view_id = ViewId::from_proto(view.id.clone().context("invalid view id")?)?;
 4672                let should_add_view = this.update(cx, |this, _| {
 4673                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4674                        anyhow::Ok(!state.items_by_leader_view_id.contains_key(&view_id))
 4675                    } else {
 4676                        anyhow::Ok(false)
 4677                    }
 4678                })??;
 4679
 4680                if should_add_view {
 4681                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4682                }
 4683            }
 4684            proto::update_followers::Variant::UpdateActiveView(update_active_view) => {
 4685                let should_add_view = this.update(cx, |this, _| {
 4686                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4687                        state.active_view_id = update_active_view
 4688                            .view
 4689                            .as_ref()
 4690                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4691
 4692                        if state.active_view_id.is_some_and(|view_id| {
 4693                            !state.items_by_leader_view_id.contains_key(&view_id)
 4694                        }) {
 4695                            anyhow::Ok(true)
 4696                        } else {
 4697                            anyhow::Ok(false)
 4698                        }
 4699                    } else {
 4700                        anyhow::Ok(false)
 4701                    }
 4702                })??;
 4703
 4704                if should_add_view && let Some(view) = update_active_view.view {
 4705                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4706                }
 4707            }
 4708            proto::update_followers::Variant::UpdateView(update_view) => {
 4709                let variant = update_view.variant.context("missing update view variant")?;
 4710                let id = update_view.id.context("missing update view id")?;
 4711                let mut tasks = Vec::new();
 4712                this.update_in(cx, |this, window, cx| {
 4713                    let project = this.project.clone();
 4714                    if let Some(state) = this.follower_states.get(&leader_id.into()) {
 4715                        let view_id = ViewId::from_proto(id.clone())?;
 4716                        if let Some(item) = state.items_by_leader_view_id.get(&view_id) {
 4717                            tasks.push(item.view.apply_update_proto(
 4718                                &project,
 4719                                variant.clone(),
 4720                                window,
 4721                                cx,
 4722                            ));
 4723                        }
 4724                    }
 4725                    anyhow::Ok(())
 4726                })??;
 4727                try_join_all(tasks).await.log_err();
 4728            }
 4729        }
 4730        this.update_in(cx, |this, window, cx| {
 4731            this.leader_updated(leader_id, window, cx)
 4732        })?;
 4733        Ok(())
 4734    }
 4735
 4736    async fn add_view_from_leader(
 4737        this: WeakEntity<Self>,
 4738        leader_id: PeerId,
 4739        view: &proto::View,
 4740        cx: &mut AsyncWindowContext,
 4741    ) -> Result<()> {
 4742        let this = this.upgrade().context("workspace dropped")?;
 4743
 4744        let Some(id) = view.id.clone() else {
 4745            anyhow::bail!("no id for view");
 4746        };
 4747        let id = ViewId::from_proto(id)?;
 4748        let panel_id = view.panel_id.and_then(proto::PanelId::from_i32);
 4749
 4750        let pane = this.update(cx, |this, _cx| {
 4751            let state = this
 4752                .follower_states
 4753                .get(&leader_id.into())
 4754                .context("stopped following")?;
 4755            anyhow::Ok(state.pane().clone())
 4756        })??;
 4757        let existing_item = pane.update_in(cx, |pane, window, cx| {
 4758            let client = this.read(cx).client().clone();
 4759            pane.items().find_map(|item| {
 4760                let item = item.to_followable_item_handle(cx)?;
 4761                if item.remote_id(&client, window, cx) == Some(id) {
 4762                    Some(item)
 4763                } else {
 4764                    None
 4765                }
 4766            })
 4767        })?;
 4768        let item = if let Some(existing_item) = existing_item {
 4769            existing_item
 4770        } else {
 4771            let variant = view.variant.clone();
 4772            anyhow::ensure!(variant.is_some(), "missing view variant");
 4773
 4774            let task = cx.update(|window, cx| {
 4775                FollowableViewRegistry::from_state_proto(this.clone(), id, variant, window, cx)
 4776            })?;
 4777
 4778            let Some(task) = task else {
 4779                anyhow::bail!(
 4780                    "failed to construct view from leader (maybe from a different version of zed?)"
 4781                );
 4782            };
 4783
 4784            let mut new_item = task.await?;
 4785            pane.update_in(cx, |pane, window, cx| {
 4786                let mut item_to_remove = None;
 4787                for (ix, item) in pane.items().enumerate() {
 4788                    if let Some(item) = item.to_followable_item_handle(cx) {
 4789                        match new_item.dedup(item.as_ref(), window, cx) {
 4790                            Some(item::Dedup::KeepExisting) => {
 4791                                new_item =
 4792                                    item.boxed_clone().to_followable_item_handle(cx).unwrap();
 4793                                break;
 4794                            }
 4795                            Some(item::Dedup::ReplaceExisting) => {
 4796                                item_to_remove = Some((ix, item.item_id()));
 4797                                break;
 4798                            }
 4799                            None => {}
 4800                        }
 4801                    }
 4802                }
 4803
 4804                if let Some((ix, id)) = item_to_remove {
 4805                    pane.remove_item(id, false, false, window, cx);
 4806                    pane.add_item(new_item.boxed_clone(), false, false, Some(ix), window, cx);
 4807                }
 4808            })?;
 4809
 4810            new_item
 4811        };
 4812
 4813        this.update_in(cx, |this, window, cx| {
 4814            let state = this.follower_states.get_mut(&leader_id.into())?;
 4815            item.set_leader_id(Some(leader_id.into()), window, cx);
 4816            state.items_by_leader_view_id.insert(
 4817                id,
 4818                FollowerView {
 4819                    view: item,
 4820                    location: panel_id,
 4821                },
 4822            );
 4823
 4824            Some(())
 4825        })?;
 4826
 4827        Ok(())
 4828    }
 4829
 4830    fn handle_agent_location_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4831        let Some(follower_state) = self.follower_states.get_mut(&CollaboratorId::Agent) else {
 4832            return;
 4833        };
 4834
 4835        if let Some(agent_location) = self.project.read(cx).agent_location() {
 4836            let buffer_entity_id = agent_location.buffer.entity_id();
 4837            let view_id = ViewId {
 4838                creator: CollaboratorId::Agent,
 4839                id: buffer_entity_id.as_u64(),
 4840            };
 4841            follower_state.active_view_id = Some(view_id);
 4842
 4843            let item = match follower_state.items_by_leader_view_id.entry(view_id) {
 4844                hash_map::Entry::Occupied(entry) => Some(entry.into_mut()),
 4845                hash_map::Entry::Vacant(entry) => {
 4846                    let existing_view =
 4847                        follower_state
 4848                            .center_pane
 4849                            .read(cx)
 4850                            .items()
 4851                            .find_map(|item| {
 4852                                let item = item.to_followable_item_handle(cx)?;
 4853                                if item.buffer_kind(cx) == ItemBufferKind::Singleton
 4854                                    && item.project_item_model_ids(cx).as_slice()
 4855                                        == [buffer_entity_id]
 4856                                {
 4857                                    Some(item)
 4858                                } else {
 4859                                    None
 4860                                }
 4861                            });
 4862                    let view = existing_view.or_else(|| {
 4863                        agent_location.buffer.upgrade().and_then(|buffer| {
 4864                            cx.update_default_global(|registry: &mut ProjectItemRegistry, cx| {
 4865                                registry.build_item(buffer, self.project.clone(), None, window, cx)
 4866                            })?
 4867                            .to_followable_item_handle(cx)
 4868                        })
 4869                    });
 4870
 4871                    view.map(|view| {
 4872                        entry.insert(FollowerView {
 4873                            view,
 4874                            location: None,
 4875                        })
 4876                    })
 4877                }
 4878            };
 4879
 4880            if let Some(item) = item {
 4881                item.view
 4882                    .set_leader_id(Some(CollaboratorId::Agent), window, cx);
 4883                item.view
 4884                    .update_agent_location(agent_location.position, window, cx);
 4885            }
 4886        } else {
 4887            follower_state.active_view_id = None;
 4888        }
 4889
 4890        self.leader_updated(CollaboratorId::Agent, window, cx);
 4891    }
 4892
 4893    pub fn update_active_view_for_followers(&mut self, window: &mut Window, cx: &mut App) {
 4894        let mut is_project_item = true;
 4895        let mut update = proto::UpdateActiveView::default();
 4896        if window.is_window_active() {
 4897            let (active_item, panel_id) = self.active_item_for_followers(window, cx);
 4898
 4899            if let Some(item) = active_item
 4900                && item.item_focus_handle(cx).contains_focused(window, cx)
 4901            {
 4902                let leader_id = self
 4903                    .pane_for(&*item)
 4904                    .and_then(|pane| self.leader_for_pane(&pane));
 4905                let leader_peer_id = match leader_id {
 4906                    Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4907                    Some(CollaboratorId::Agent) | None => None,
 4908                };
 4909
 4910                if let Some(item) = item.to_followable_item_handle(cx) {
 4911                    let id = item
 4912                        .remote_id(&self.app_state.client, window, cx)
 4913                        .map(|id| id.to_proto());
 4914
 4915                    if let Some(id) = id
 4916                        && let Some(variant) = item.to_state_proto(window, cx)
 4917                    {
 4918                        let view = Some(proto::View {
 4919                            id: id.clone(),
 4920                            leader_id: leader_peer_id,
 4921                            variant: Some(variant),
 4922                            panel_id: panel_id.map(|id| id as i32),
 4923                        });
 4924
 4925                        is_project_item = item.is_project_item(window, cx);
 4926                        update = proto::UpdateActiveView {
 4927                            view,
 4928                            // TODO: Remove after version 0.145.x stabilizes.
 4929                            id,
 4930                            leader_id: leader_peer_id,
 4931                        };
 4932                    };
 4933                }
 4934            }
 4935        }
 4936
 4937        let active_view_id = update.view.as_ref().and_then(|view| view.id.as_ref());
 4938        if active_view_id != self.last_active_view_id.as_ref() {
 4939            self.last_active_view_id = active_view_id.cloned();
 4940            self.update_followers(
 4941                is_project_item,
 4942                proto::update_followers::Variant::UpdateActiveView(update),
 4943                window,
 4944                cx,
 4945            );
 4946        }
 4947    }
 4948
 4949    fn active_item_for_followers(
 4950        &self,
 4951        window: &mut Window,
 4952        cx: &mut App,
 4953    ) -> (Option<Box<dyn ItemHandle>>, Option<proto::PanelId>) {
 4954        let mut active_item = None;
 4955        let mut panel_id = None;
 4956        for dock in self.all_docks() {
 4957            if dock.focus_handle(cx).contains_focused(window, cx)
 4958                && let Some(panel) = dock.read(cx).active_panel()
 4959                && let Some(pane) = panel.pane(cx)
 4960                && let Some(item) = pane.read(cx).active_item()
 4961            {
 4962                active_item = Some(item);
 4963                panel_id = panel.remote_id();
 4964                break;
 4965            }
 4966        }
 4967
 4968        if active_item.is_none() {
 4969            active_item = self.active_pane().read(cx).active_item();
 4970        }
 4971        (active_item, panel_id)
 4972    }
 4973
 4974    fn update_followers(
 4975        &self,
 4976        project_only: bool,
 4977        update: proto::update_followers::Variant,
 4978        _: &mut Window,
 4979        cx: &mut App,
 4980    ) -> Option<()> {
 4981        // If this update only applies to for followers in the current project,
 4982        // then skip it unless this project is shared. If it applies to all
 4983        // followers, regardless of project, then set `project_id` to none,
 4984        // indicating that it goes to all followers.
 4985        let project_id = if project_only {
 4986            Some(self.project.read(cx).remote_id()?)
 4987        } else {
 4988            None
 4989        };
 4990        self.app_state().workspace_store.update(cx, |store, cx| {
 4991            store.update_followers(project_id, update, cx)
 4992        })
 4993    }
 4994
 4995    pub fn leader_for_pane(&self, pane: &Entity<Pane>) -> Option<CollaboratorId> {
 4996        self.follower_states.iter().find_map(|(leader_id, state)| {
 4997            if state.center_pane == *pane || state.dock_pane.as_ref() == Some(pane) {
 4998                Some(*leader_id)
 4999            } else {
 5000                None
 5001            }
 5002        })
 5003    }
 5004
 5005    fn leader_updated(
 5006        &mut self,
 5007        leader_id: impl Into<CollaboratorId>,
 5008        window: &mut Window,
 5009        cx: &mut Context<Self>,
 5010    ) -> Option<Box<dyn ItemHandle>> {
 5011        cx.notify();
 5012
 5013        let leader_id = leader_id.into();
 5014        let (panel_id, item) = match leader_id {
 5015            CollaboratorId::PeerId(peer_id) => self.active_item_for_peer(peer_id, window, cx)?,
 5016            CollaboratorId::Agent => (None, self.active_item_for_agent()?),
 5017        };
 5018
 5019        let state = self.follower_states.get(&leader_id)?;
 5020        let mut transfer_focus = state.center_pane.read(cx).has_focus(window, cx);
 5021        let pane;
 5022        if let Some(panel_id) = panel_id {
 5023            pane = self
 5024                .activate_panel_for_proto_id(panel_id, window, cx)?
 5025                .pane(cx)?;
 5026            let state = self.follower_states.get_mut(&leader_id)?;
 5027            state.dock_pane = Some(pane.clone());
 5028        } else {
 5029            pane = state.center_pane.clone();
 5030            let state = self.follower_states.get_mut(&leader_id)?;
 5031            if let Some(dock_pane) = state.dock_pane.take() {
 5032                transfer_focus |= dock_pane.focus_handle(cx).contains_focused(window, cx);
 5033            }
 5034        }
 5035
 5036        pane.update(cx, |pane, cx| {
 5037            let focus_active_item = pane.has_focus(window, cx) || transfer_focus;
 5038            if let Some(index) = pane.index_for_item(item.as_ref()) {
 5039                pane.activate_item(index, false, false, window, cx);
 5040            } else {
 5041                pane.add_item(item.boxed_clone(), false, false, None, window, cx)
 5042            }
 5043
 5044            if focus_active_item {
 5045                pane.focus_active_item(window, cx)
 5046            }
 5047        });
 5048
 5049        Some(item)
 5050    }
 5051
 5052    fn active_item_for_agent(&self) -> Option<Box<dyn ItemHandle>> {
 5053        let state = self.follower_states.get(&CollaboratorId::Agent)?;
 5054        let active_view_id = state.active_view_id?;
 5055        Some(
 5056            state
 5057                .items_by_leader_view_id
 5058                .get(&active_view_id)?
 5059                .view
 5060                .boxed_clone(),
 5061        )
 5062    }
 5063
 5064    fn active_item_for_peer(
 5065        &self,
 5066        peer_id: PeerId,
 5067        window: &mut Window,
 5068        cx: &mut Context<Self>,
 5069    ) -> Option<(Option<PanelId>, Box<dyn ItemHandle>)> {
 5070        let call = self.active_call()?;
 5071        let room = call.read(cx).room()?.read(cx);
 5072        let participant = room.remote_participant_for_peer_id(peer_id)?;
 5073        let leader_in_this_app;
 5074        let leader_in_this_project;
 5075        match participant.location {
 5076            call::ParticipantLocation::SharedProject { project_id } => {
 5077                leader_in_this_app = true;
 5078                leader_in_this_project = Some(project_id) == self.project.read(cx).remote_id();
 5079            }
 5080            call::ParticipantLocation::UnsharedProject => {
 5081                leader_in_this_app = true;
 5082                leader_in_this_project = false;
 5083            }
 5084            call::ParticipantLocation::External => {
 5085                leader_in_this_app = false;
 5086                leader_in_this_project = false;
 5087            }
 5088        };
 5089        let state = self.follower_states.get(&peer_id.into())?;
 5090        let mut item_to_activate = None;
 5091        if let (Some(active_view_id), true) = (state.active_view_id, leader_in_this_app) {
 5092            if let Some(item) = state.items_by_leader_view_id.get(&active_view_id)
 5093                && (leader_in_this_project || !item.view.is_project_item(window, cx))
 5094            {
 5095                item_to_activate = Some((item.location, item.view.boxed_clone()));
 5096            }
 5097        } else if let Some(shared_screen) =
 5098            self.shared_screen_for_peer(peer_id, &state.center_pane, window, cx)
 5099        {
 5100            item_to_activate = Some((None, Box::new(shared_screen)));
 5101        }
 5102        item_to_activate
 5103    }
 5104
 5105    fn shared_screen_for_peer(
 5106        &self,
 5107        peer_id: PeerId,
 5108        pane: &Entity<Pane>,
 5109        window: &mut Window,
 5110        cx: &mut App,
 5111    ) -> Option<Entity<SharedScreen>> {
 5112        let call = self.active_call()?;
 5113        let room = call.read(cx).room()?.clone();
 5114        let participant = room.read(cx).remote_participant_for_peer_id(peer_id)?;
 5115        let track = participant.video_tracks.values().next()?.clone();
 5116        let user = participant.user.clone();
 5117
 5118        for item in pane.read(cx).items_of_type::<SharedScreen>() {
 5119            if item.read(cx).peer_id == peer_id {
 5120                return Some(item);
 5121            }
 5122        }
 5123
 5124        Some(cx.new(|cx| SharedScreen::new(track, peer_id, user.clone(), room.clone(), window, cx)))
 5125    }
 5126
 5127    pub fn on_window_activation_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5128        if window.is_window_active() {
 5129            self.update_active_view_for_followers(window, cx);
 5130
 5131            if let Some(database_id) = self.database_id {
 5132                cx.background_spawn(persistence::DB.update_timestamp(database_id))
 5133                    .detach();
 5134            }
 5135        } else {
 5136            for pane in &self.panes {
 5137                pane.update(cx, |pane, cx| {
 5138                    if let Some(item) = pane.active_item() {
 5139                        item.workspace_deactivated(window, cx);
 5140                    }
 5141                    for item in pane.items() {
 5142                        if matches!(
 5143                            item.workspace_settings(cx).autosave,
 5144                            AutosaveSetting::OnWindowChange | AutosaveSetting::OnFocusChange
 5145                        ) {
 5146                            Pane::autosave_item(item.as_ref(), self.project.clone(), window, cx)
 5147                                .detach_and_log_err(cx);
 5148                        }
 5149                    }
 5150                });
 5151            }
 5152        }
 5153    }
 5154
 5155    pub fn active_call(&self) -> Option<&Entity<ActiveCall>> {
 5156        self.active_call.as_ref().map(|(call, _)| call)
 5157    }
 5158
 5159    fn on_active_call_event(
 5160        &mut self,
 5161        _: &Entity<ActiveCall>,
 5162        event: &call::room::Event,
 5163        window: &mut Window,
 5164        cx: &mut Context<Self>,
 5165    ) {
 5166        match event {
 5167            call::room::Event::ParticipantLocationChanged { participant_id }
 5168            | call::room::Event::RemoteVideoTracksChanged { participant_id } => {
 5169                self.leader_updated(participant_id, window, cx);
 5170            }
 5171            _ => {}
 5172        }
 5173    }
 5174
 5175    pub fn database_id(&self) -> Option<WorkspaceId> {
 5176        self.database_id
 5177    }
 5178
 5179    pub fn session_id(&self) -> Option<String> {
 5180        self.session_id.clone()
 5181    }
 5182
 5183    pub fn root_paths(&self, cx: &App) -> Vec<Arc<Path>> {
 5184        let project = self.project().read(cx);
 5185        project
 5186            .visible_worktrees(cx)
 5187            .map(|worktree| worktree.read(cx).abs_path())
 5188            .collect::<Vec<_>>()
 5189    }
 5190
 5191    fn remove_panes(&mut self, member: Member, window: &mut Window, cx: &mut Context<Workspace>) {
 5192        match member {
 5193            Member::Axis(PaneAxis { members, .. }) => {
 5194                for child in members.iter() {
 5195                    self.remove_panes(child.clone(), window, cx)
 5196                }
 5197            }
 5198            Member::Pane(pane) => {
 5199                self.force_remove_pane(&pane, &None, window, cx);
 5200            }
 5201        }
 5202    }
 5203
 5204    fn remove_from_session(&mut self, window: &mut Window, cx: &mut App) -> Task<()> {
 5205        self.session_id.take();
 5206        self.serialize_workspace_internal(window, cx)
 5207    }
 5208
 5209    fn force_remove_pane(
 5210        &mut self,
 5211        pane: &Entity<Pane>,
 5212        focus_on: &Option<Entity<Pane>>,
 5213        window: &mut Window,
 5214        cx: &mut Context<Workspace>,
 5215    ) {
 5216        self.panes.retain(|p| p != pane);
 5217        if let Some(focus_on) = focus_on {
 5218            focus_on.update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5219        } else if self.active_pane() == pane {
 5220            self.panes
 5221                .last()
 5222                .unwrap()
 5223                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5224        }
 5225        if self.last_active_center_pane == Some(pane.downgrade()) {
 5226            self.last_active_center_pane = None;
 5227        }
 5228        cx.notify();
 5229    }
 5230
 5231    fn serialize_workspace(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5232        if self._schedule_serialize_workspace.is_none() {
 5233            self._schedule_serialize_workspace =
 5234                Some(cx.spawn_in(window, async move |this, cx| {
 5235                    cx.background_executor()
 5236                        .timer(SERIALIZATION_THROTTLE_TIME)
 5237                        .await;
 5238                    this.update_in(cx, |this, window, cx| {
 5239                        this.serialize_workspace_internal(window, cx).detach();
 5240                        this._schedule_serialize_workspace.take();
 5241                    })
 5242                    .log_err();
 5243                }));
 5244        }
 5245    }
 5246
 5247    fn serialize_workspace_internal(&self, window: &mut Window, cx: &mut App) -> Task<()> {
 5248        let Some(database_id) = self.database_id() else {
 5249            return Task::ready(());
 5250        };
 5251
 5252        fn serialize_pane_handle(
 5253            pane_handle: &Entity<Pane>,
 5254            window: &mut Window,
 5255            cx: &mut App,
 5256        ) -> SerializedPane {
 5257            let (items, active, pinned_count) = {
 5258                let pane = pane_handle.read(cx);
 5259                let active_item_id = pane.active_item().map(|item| item.item_id());
 5260                (
 5261                    pane.items()
 5262                        .filter_map(|handle| {
 5263                            let handle = handle.to_serializable_item_handle(cx)?;
 5264
 5265                            Some(SerializedItem {
 5266                                kind: Arc::from(handle.serialized_item_kind()),
 5267                                item_id: handle.item_id().as_u64(),
 5268                                active: Some(handle.item_id()) == active_item_id,
 5269                                preview: pane.is_active_preview_item(handle.item_id()),
 5270                            })
 5271                        })
 5272                        .collect::<Vec<_>>(),
 5273                    pane.has_focus(window, cx),
 5274                    pane.pinned_count(),
 5275                )
 5276            };
 5277
 5278            SerializedPane::new(items, active, pinned_count)
 5279        }
 5280
 5281        fn build_serialized_pane_group(
 5282            pane_group: &Member,
 5283            window: &mut Window,
 5284            cx: &mut App,
 5285        ) -> SerializedPaneGroup {
 5286            match pane_group {
 5287                Member::Axis(PaneAxis {
 5288                    axis,
 5289                    members,
 5290                    flexes,
 5291                    bounding_boxes: _,
 5292                }) => SerializedPaneGroup::Group {
 5293                    axis: SerializedAxis(*axis),
 5294                    children: members
 5295                        .iter()
 5296                        .map(|member| build_serialized_pane_group(member, window, cx))
 5297                        .collect::<Vec<_>>(),
 5298                    flexes: Some(flexes.lock().clone()),
 5299                },
 5300                Member::Pane(pane_handle) => {
 5301                    SerializedPaneGroup::Pane(serialize_pane_handle(pane_handle, window, cx))
 5302                }
 5303            }
 5304        }
 5305
 5306        fn build_serialized_docks(
 5307            this: &Workspace,
 5308            window: &mut Window,
 5309            cx: &mut App,
 5310        ) -> DockStructure {
 5311            let left_dock = this.left_dock.read(cx);
 5312            let left_visible = left_dock.is_open();
 5313            let left_active_panel = left_dock
 5314                .active_panel()
 5315                .map(|panel| panel.persistent_name().to_string());
 5316            let left_dock_zoom = left_dock
 5317                .active_panel()
 5318                .map(|panel| panel.is_zoomed(window, cx))
 5319                .unwrap_or(false);
 5320
 5321            let right_dock = this.right_dock.read(cx);
 5322            let right_visible = right_dock.is_open();
 5323            let right_active_panel = right_dock
 5324                .active_panel()
 5325                .map(|panel| panel.persistent_name().to_string());
 5326            let right_dock_zoom = right_dock
 5327                .active_panel()
 5328                .map(|panel| panel.is_zoomed(window, cx))
 5329                .unwrap_or(false);
 5330
 5331            let bottom_dock = this.bottom_dock.read(cx);
 5332            let bottom_visible = bottom_dock.is_open();
 5333            let bottom_active_panel = bottom_dock
 5334                .active_panel()
 5335                .map(|panel| panel.persistent_name().to_string());
 5336            let bottom_dock_zoom = bottom_dock
 5337                .active_panel()
 5338                .map(|panel| panel.is_zoomed(window, cx))
 5339                .unwrap_or(false);
 5340
 5341            DockStructure {
 5342                left: DockData {
 5343                    visible: left_visible,
 5344                    active_panel: left_active_panel,
 5345                    zoom: left_dock_zoom,
 5346                },
 5347                right: DockData {
 5348                    visible: right_visible,
 5349                    active_panel: right_active_panel,
 5350                    zoom: right_dock_zoom,
 5351                },
 5352                bottom: DockData {
 5353                    visible: bottom_visible,
 5354                    active_panel: bottom_active_panel,
 5355                    zoom: bottom_dock_zoom,
 5356                },
 5357            }
 5358        }
 5359
 5360        match self.serialize_workspace_location(cx) {
 5361            WorkspaceLocation::Location(location, paths) => {
 5362                let breakpoints = self.project.update(cx, |project, cx| {
 5363                    project
 5364                        .breakpoint_store()
 5365                        .read(cx)
 5366                        .all_source_breakpoints(cx)
 5367                });
 5368                let user_toolchains = self
 5369                    .project
 5370                    .read(cx)
 5371                    .user_toolchains(cx)
 5372                    .unwrap_or_default();
 5373
 5374                let center_group = build_serialized_pane_group(&self.center.root, window, cx);
 5375                let docks = build_serialized_docks(self, window, cx);
 5376                let window_bounds = Some(SerializedWindowBounds(window.window_bounds()));
 5377
 5378                let serialized_workspace = SerializedWorkspace {
 5379                    id: database_id,
 5380                    location,
 5381                    paths,
 5382                    center_group,
 5383                    window_bounds,
 5384                    display: Default::default(),
 5385                    docks,
 5386                    centered_layout: self.centered_layout,
 5387                    session_id: self.session_id.clone(),
 5388                    breakpoints,
 5389                    window_id: Some(window.window_handle().window_id().as_u64()),
 5390                    user_toolchains,
 5391                };
 5392
 5393                window.spawn(cx, async move |_| {
 5394                    persistence::DB.save_workspace(serialized_workspace).await;
 5395                })
 5396            }
 5397            WorkspaceLocation::DetachFromSession => window.spawn(cx, async move |_| {
 5398                persistence::DB
 5399                    .set_session_id(database_id, None)
 5400                    .await
 5401                    .log_err();
 5402            }),
 5403            WorkspaceLocation::None => Task::ready(()),
 5404        }
 5405    }
 5406
 5407    fn serialize_workspace_location(&self, cx: &App) -> WorkspaceLocation {
 5408        let paths = PathList::new(&self.root_paths(cx));
 5409        if let Some(connection) = self.project.read(cx).remote_connection_options(cx) {
 5410            WorkspaceLocation::Location(SerializedWorkspaceLocation::Remote(connection), paths)
 5411        } else if self.project.read(cx).is_local() {
 5412            if !paths.is_empty() {
 5413                WorkspaceLocation::Location(SerializedWorkspaceLocation::Local, paths)
 5414            } else {
 5415                WorkspaceLocation::DetachFromSession
 5416            }
 5417        } else {
 5418            WorkspaceLocation::None
 5419        }
 5420    }
 5421
 5422    fn update_history(&self, cx: &mut App) {
 5423        let Some(id) = self.database_id() else {
 5424            return;
 5425        };
 5426        if !self.project.read(cx).is_local() {
 5427            return;
 5428        }
 5429        if let Some(manager) = HistoryManager::global(cx) {
 5430            let paths = PathList::new(&self.root_paths(cx));
 5431            manager.update(cx, |this, cx| {
 5432                this.update_history(id, HistoryManagerEntry::new(id, &paths), cx);
 5433            });
 5434        }
 5435    }
 5436
 5437    async fn serialize_items(
 5438        this: &WeakEntity<Self>,
 5439        items_rx: UnboundedReceiver<Box<dyn SerializableItemHandle>>,
 5440        cx: &mut AsyncWindowContext,
 5441    ) -> Result<()> {
 5442        const CHUNK_SIZE: usize = 200;
 5443
 5444        let mut serializable_items = items_rx.ready_chunks(CHUNK_SIZE);
 5445
 5446        while let Some(items_received) = serializable_items.next().await {
 5447            let unique_items =
 5448                items_received
 5449                    .into_iter()
 5450                    .fold(HashMap::default(), |mut acc, item| {
 5451                        acc.entry(item.item_id()).or_insert(item);
 5452                        acc
 5453                    });
 5454
 5455            // We use into_iter() here so that the references to the items are moved into
 5456            // the tasks and not kept alive while we're sleeping.
 5457            for (_, item) in unique_items.into_iter() {
 5458                if let Ok(Some(task)) = this.update_in(cx, |workspace, window, cx| {
 5459                    item.serialize(workspace, false, window, cx)
 5460                }) {
 5461                    cx.background_spawn(async move { task.await.log_err() })
 5462                        .detach();
 5463                }
 5464            }
 5465
 5466            cx.background_executor()
 5467                .timer(SERIALIZATION_THROTTLE_TIME)
 5468                .await;
 5469        }
 5470
 5471        Ok(())
 5472    }
 5473
 5474    pub(crate) fn enqueue_item_serialization(
 5475        &mut self,
 5476        item: Box<dyn SerializableItemHandle>,
 5477    ) -> Result<()> {
 5478        self.serializable_items_tx
 5479            .unbounded_send(item)
 5480            .map_err(|err| anyhow!("failed to send serializable item over channel: {err}"))
 5481    }
 5482
 5483    pub(crate) fn load_workspace(
 5484        serialized_workspace: SerializedWorkspace,
 5485        paths_to_open: Vec<Option<ProjectPath>>,
 5486        window: &mut Window,
 5487        cx: &mut Context<Workspace>,
 5488    ) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 5489        cx.spawn_in(window, async move |workspace, cx| {
 5490            let project = workspace.read_with(cx, |workspace, _| workspace.project().clone())?;
 5491
 5492            let mut center_group = None;
 5493            let mut center_items = None;
 5494
 5495            // Traverse the splits tree and add to things
 5496            if let Some((group, active_pane, items)) = serialized_workspace
 5497                .center_group
 5498                .deserialize(&project, serialized_workspace.id, workspace.clone(), cx)
 5499                .await
 5500            {
 5501                center_items = Some(items);
 5502                center_group = Some((group, active_pane))
 5503            }
 5504
 5505            let mut items_by_project_path = HashMap::default();
 5506            let mut item_ids_by_kind = HashMap::default();
 5507            let mut all_deserialized_items = Vec::default();
 5508            cx.update(|_, cx| {
 5509                for item in center_items.unwrap_or_default().into_iter().flatten() {
 5510                    if let Some(serializable_item_handle) = item.to_serializable_item_handle(cx) {
 5511                        item_ids_by_kind
 5512                            .entry(serializable_item_handle.serialized_item_kind())
 5513                            .or_insert(Vec::new())
 5514                            .push(item.item_id().as_u64() as ItemId);
 5515                    }
 5516
 5517                    if let Some(project_path) = item.project_path(cx) {
 5518                        items_by_project_path.insert(project_path, item.clone());
 5519                    }
 5520                    all_deserialized_items.push(item);
 5521                }
 5522            })?;
 5523
 5524            let opened_items = paths_to_open
 5525                .into_iter()
 5526                .map(|path_to_open| {
 5527                    path_to_open
 5528                        .and_then(|path_to_open| items_by_project_path.remove(&path_to_open))
 5529                })
 5530                .collect::<Vec<_>>();
 5531
 5532            // Remove old panes from workspace panes list
 5533            workspace.update_in(cx, |workspace, window, cx| {
 5534                if let Some((center_group, active_pane)) = center_group {
 5535                    workspace.remove_panes(workspace.center.root.clone(), window, cx);
 5536
 5537                    // Swap workspace center group
 5538                    workspace.center = PaneGroup::with_root(center_group);
 5539                    if let Some(active_pane) = active_pane {
 5540                        workspace.set_active_pane(&active_pane, window, cx);
 5541                        cx.focus_self(window);
 5542                    } else {
 5543                        workspace.set_active_pane(&workspace.center.first_pane(), window, cx);
 5544                    }
 5545                }
 5546
 5547                let docks = serialized_workspace.docks;
 5548
 5549                for (dock, serialized_dock) in [
 5550                    (&mut workspace.right_dock, docks.right),
 5551                    (&mut workspace.left_dock, docks.left),
 5552                    (&mut workspace.bottom_dock, docks.bottom),
 5553                ]
 5554                .iter_mut()
 5555                {
 5556                    dock.update(cx, |dock, cx| {
 5557                        dock.serialized_dock = Some(serialized_dock.clone());
 5558                        dock.restore_state(window, cx);
 5559                    });
 5560                }
 5561
 5562                cx.notify();
 5563            })?;
 5564
 5565            let _ = project
 5566                .update(cx, |project, cx| {
 5567                    project
 5568                        .breakpoint_store()
 5569                        .update(cx, |breakpoint_store, cx| {
 5570                            breakpoint_store
 5571                                .with_serialized_breakpoints(serialized_workspace.breakpoints, cx)
 5572                        })
 5573                })?
 5574                .await;
 5575
 5576            // Clean up all the items that have _not_ been loaded. Our ItemIds aren't stable. That means
 5577            // after loading the items, we might have different items and in order to avoid
 5578            // the database filling up, we delete items that haven't been loaded now.
 5579            //
 5580            // The items that have been loaded, have been saved after they've been added to the workspace.
 5581            let clean_up_tasks = workspace.update_in(cx, |_, window, cx| {
 5582                item_ids_by_kind
 5583                    .into_iter()
 5584                    .map(|(item_kind, loaded_items)| {
 5585                        SerializableItemRegistry::cleanup(
 5586                            item_kind,
 5587                            serialized_workspace.id,
 5588                            loaded_items,
 5589                            window,
 5590                            cx,
 5591                        )
 5592                        .log_err()
 5593                    })
 5594                    .collect::<Vec<_>>()
 5595            })?;
 5596
 5597            futures::future::join_all(clean_up_tasks).await;
 5598
 5599            workspace
 5600                .update_in(cx, |workspace, window, cx| {
 5601                    // Serialize ourself to make sure our timestamps and any pane / item changes are replicated
 5602                    workspace.serialize_workspace_internal(window, cx).detach();
 5603
 5604                    // Ensure that we mark the window as edited if we did load dirty items
 5605                    workspace.update_window_edited(window, cx);
 5606                })
 5607                .ok();
 5608
 5609            Ok(opened_items)
 5610        })
 5611    }
 5612
 5613    fn actions(&self, div: Div, window: &mut Window, cx: &mut Context<Self>) -> Div {
 5614        self.add_workspace_actions_listeners(div, window, cx)
 5615            .on_action(cx.listener(
 5616                |_workspace, action_sequence: &settings::ActionSequence, window, cx| {
 5617                    for action in &action_sequence.0 {
 5618                        window.dispatch_action(action.boxed_clone(), cx);
 5619                    }
 5620                },
 5621            ))
 5622            .on_action(cx.listener(Self::close_inactive_items_and_panes))
 5623            .on_action(cx.listener(Self::close_all_items_and_panes))
 5624            .on_action(cx.listener(Self::save_all))
 5625            .on_action(cx.listener(Self::send_keystrokes))
 5626            .on_action(cx.listener(Self::add_folder_to_project))
 5627            .on_action(cx.listener(Self::follow_next_collaborator))
 5628            .on_action(cx.listener(Self::close_window))
 5629            .on_action(cx.listener(Self::activate_pane_at_index))
 5630            .on_action(cx.listener(Self::move_item_to_pane_at_index))
 5631            .on_action(cx.listener(Self::move_focused_panel_to_next_position))
 5632            .on_action(cx.listener(Self::toggle_edit_predictions_all_files))
 5633            .on_action(cx.listener(|workspace, _: &Unfollow, window, cx| {
 5634                let pane = workspace.active_pane().clone();
 5635                workspace.unfollow_in_pane(&pane, window, cx);
 5636            }))
 5637            .on_action(cx.listener(|workspace, action: &Save, window, cx| {
 5638                workspace
 5639                    .save_active_item(action.save_intent.unwrap_or(SaveIntent::Save), window, cx)
 5640                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5641            }))
 5642            .on_action(cx.listener(|workspace, _: &SaveWithoutFormat, window, cx| {
 5643                workspace
 5644                    .save_active_item(SaveIntent::SaveWithoutFormat, window, cx)
 5645                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5646            }))
 5647            .on_action(cx.listener(|workspace, _: &SaveAs, window, cx| {
 5648                workspace
 5649                    .save_active_item(SaveIntent::SaveAs, window, cx)
 5650                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5651            }))
 5652            .on_action(
 5653                cx.listener(|workspace, _: &ActivatePreviousPane, window, cx| {
 5654                    workspace.activate_previous_pane(window, cx)
 5655                }),
 5656            )
 5657            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5658                workspace.activate_next_pane(window, cx)
 5659            }))
 5660            .on_action(
 5661                cx.listener(|workspace, _: &ActivateNextWindow, _window, cx| {
 5662                    workspace.activate_next_window(cx)
 5663                }),
 5664            )
 5665            .on_action(
 5666                cx.listener(|workspace, _: &ActivatePreviousWindow, _window, cx| {
 5667                    workspace.activate_previous_window(cx)
 5668                }),
 5669            )
 5670            .on_action(cx.listener(|workspace, _: &ActivatePaneLeft, window, cx| {
 5671                workspace.activate_pane_in_direction(SplitDirection::Left, window, cx)
 5672            }))
 5673            .on_action(cx.listener(|workspace, _: &ActivatePaneRight, window, cx| {
 5674                workspace.activate_pane_in_direction(SplitDirection::Right, window, cx)
 5675            }))
 5676            .on_action(cx.listener(|workspace, _: &ActivatePaneUp, window, cx| {
 5677                workspace.activate_pane_in_direction(SplitDirection::Up, window, cx)
 5678            }))
 5679            .on_action(cx.listener(|workspace, _: &ActivatePaneDown, window, cx| {
 5680                workspace.activate_pane_in_direction(SplitDirection::Down, window, cx)
 5681            }))
 5682            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5683                workspace.activate_next_pane(window, cx)
 5684            }))
 5685            .on_action(cx.listener(
 5686                |workspace, action: &MoveItemToPaneInDirection, window, cx| {
 5687                    workspace.move_item_to_pane_in_direction(action, window, cx)
 5688                },
 5689            ))
 5690            .on_action(cx.listener(|workspace, _: &SwapPaneLeft, _, cx| {
 5691                workspace.swap_pane_in_direction(SplitDirection::Left, cx)
 5692            }))
 5693            .on_action(cx.listener(|workspace, _: &SwapPaneRight, _, cx| {
 5694                workspace.swap_pane_in_direction(SplitDirection::Right, cx)
 5695            }))
 5696            .on_action(cx.listener(|workspace, _: &SwapPaneUp, _, cx| {
 5697                workspace.swap_pane_in_direction(SplitDirection::Up, cx)
 5698            }))
 5699            .on_action(cx.listener(|workspace, _: &SwapPaneDown, _, cx| {
 5700                workspace.swap_pane_in_direction(SplitDirection::Down, cx)
 5701            }))
 5702            .on_action(cx.listener(|workspace, _: &MovePaneLeft, _, cx| {
 5703                workspace.move_pane_to_border(SplitDirection::Left, cx)
 5704            }))
 5705            .on_action(cx.listener(|workspace, _: &MovePaneRight, _, cx| {
 5706                workspace.move_pane_to_border(SplitDirection::Right, cx)
 5707            }))
 5708            .on_action(cx.listener(|workspace, _: &MovePaneUp, _, cx| {
 5709                workspace.move_pane_to_border(SplitDirection::Up, cx)
 5710            }))
 5711            .on_action(cx.listener(|workspace, _: &MovePaneDown, _, cx| {
 5712                workspace.move_pane_to_border(SplitDirection::Down, cx)
 5713            }))
 5714            .on_action(cx.listener(|this, _: &ToggleLeftDock, window, cx| {
 5715                this.toggle_dock(DockPosition::Left, window, cx);
 5716            }))
 5717            .on_action(cx.listener(
 5718                |workspace: &mut Workspace, _: &ToggleRightDock, window, cx| {
 5719                    workspace.toggle_dock(DockPosition::Right, window, cx);
 5720                },
 5721            ))
 5722            .on_action(cx.listener(
 5723                |workspace: &mut Workspace, _: &ToggleBottomDock, window, cx| {
 5724                    workspace.toggle_dock(DockPosition::Bottom, window, cx);
 5725                },
 5726            ))
 5727            .on_action(cx.listener(
 5728                |workspace: &mut Workspace, _: &CloseActiveDock, window, cx| {
 5729                    if !workspace.close_active_dock(window, cx) {
 5730                        cx.propagate();
 5731                    }
 5732                },
 5733            ))
 5734            .on_action(
 5735                cx.listener(|workspace: &mut Workspace, _: &CloseAllDocks, window, cx| {
 5736                    workspace.close_all_docks(window, cx);
 5737                }),
 5738            )
 5739            .on_action(cx.listener(
 5740                |workspace: &mut Workspace, _: &ClearAllNotifications, _, cx| {
 5741                    workspace.clear_all_notifications(cx);
 5742                },
 5743            ))
 5744            .on_action(cx.listener(
 5745                |workspace: &mut Workspace, _: &SuppressNotification, _, cx| {
 5746                    if let Some((notification_id, _)) = workspace.notifications.pop() {
 5747                        workspace.suppress_notification(&notification_id, cx);
 5748                    }
 5749                },
 5750            ))
 5751            .on_action(cx.listener(
 5752                |workspace: &mut Workspace, _: &ReopenClosedItem, window, cx| {
 5753                    workspace.reopen_closed_item(window, cx).detach();
 5754                },
 5755            ))
 5756            .on_action(cx.listener(
 5757                |workspace: &mut Workspace, _: &ResetActiveDockSize, window, cx| {
 5758                    for dock in workspace.all_docks() {
 5759                        if dock.focus_handle(cx).contains_focused(window, cx) {
 5760                            let Some(panel) = dock.read(cx).active_panel() else {
 5761                                return;
 5762                            };
 5763
 5764                            // Set to `None`, then the size will fall back to the default.
 5765                            panel.clone().set_size(None, window, cx);
 5766
 5767                            return;
 5768                        }
 5769                    }
 5770                },
 5771            ))
 5772            .on_action(cx.listener(
 5773                |workspace: &mut Workspace, _: &ResetOpenDocksSize, window, cx| {
 5774                    for dock in workspace.all_docks() {
 5775                        if let Some(panel) = dock.read(cx).visible_panel() {
 5776                            // Set to `None`, then the size will fall back to the default.
 5777                            panel.clone().set_size(None, window, cx);
 5778                        }
 5779                    }
 5780                },
 5781            ))
 5782            .on_action(cx.listener(
 5783                |workspace: &mut Workspace, act: &IncreaseActiveDockSize, window, cx| {
 5784                    adjust_active_dock_size_by_px(
 5785                        px_with_ui_font_fallback(act.px, cx),
 5786                        workspace,
 5787                        window,
 5788                        cx,
 5789                    );
 5790                },
 5791            ))
 5792            .on_action(cx.listener(
 5793                |workspace: &mut Workspace, act: &DecreaseActiveDockSize, window, cx| {
 5794                    adjust_active_dock_size_by_px(
 5795                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5796                        workspace,
 5797                        window,
 5798                        cx,
 5799                    );
 5800                },
 5801            ))
 5802            .on_action(cx.listener(
 5803                |workspace: &mut Workspace, act: &IncreaseOpenDocksSize, window, cx| {
 5804                    adjust_open_docks_size_by_px(
 5805                        px_with_ui_font_fallback(act.px, cx),
 5806                        workspace,
 5807                        window,
 5808                        cx,
 5809                    );
 5810                },
 5811            ))
 5812            .on_action(cx.listener(
 5813                |workspace: &mut Workspace, act: &DecreaseOpenDocksSize, window, cx| {
 5814                    adjust_open_docks_size_by_px(
 5815                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5816                        workspace,
 5817                        window,
 5818                        cx,
 5819                    );
 5820                },
 5821            ))
 5822            .on_action(cx.listener(Workspace::toggle_centered_layout))
 5823            .on_action(cx.listener(Workspace::cancel))
 5824    }
 5825
 5826    #[cfg(any(test, feature = "test-support"))]
 5827    pub fn test_new(project: Entity<Project>, window: &mut Window, cx: &mut Context<Self>) -> Self {
 5828        use node_runtime::NodeRuntime;
 5829        use session::Session;
 5830
 5831        let client = project.read(cx).client();
 5832        let user_store = project.read(cx).user_store();
 5833        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 5834        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 5835        window.activate_window();
 5836        let app_state = Arc::new(AppState {
 5837            languages: project.read(cx).languages().clone(),
 5838            workspace_store,
 5839            client,
 5840            user_store,
 5841            fs: project.read(cx).fs().clone(),
 5842            build_window_options: |_, _| Default::default(),
 5843            node_runtime: NodeRuntime::unavailable(),
 5844            session,
 5845        });
 5846        let workspace = Self::new(Default::default(), project, app_state, window, cx);
 5847        workspace
 5848            .active_pane
 5849            .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5850        workspace
 5851    }
 5852
 5853    pub fn register_action<A: Action>(
 5854        &mut self,
 5855        callback: impl Fn(&mut Self, &A, &mut Window, &mut Context<Self>) + 'static,
 5856    ) -> &mut Self {
 5857        let callback = Arc::new(callback);
 5858
 5859        self.workspace_actions.push(Box::new(move |div, _, _, cx| {
 5860            let callback = callback.clone();
 5861            div.on_action(cx.listener(move |workspace, event, window, cx| {
 5862                (callback)(workspace, event, window, cx)
 5863            }))
 5864        }));
 5865        self
 5866    }
 5867    pub fn register_action_renderer(
 5868        &mut self,
 5869        callback: impl Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div + 'static,
 5870    ) -> &mut Self {
 5871        self.workspace_actions.push(Box::new(callback));
 5872        self
 5873    }
 5874
 5875    fn add_workspace_actions_listeners(
 5876        &self,
 5877        mut div: Div,
 5878        window: &mut Window,
 5879        cx: &mut Context<Self>,
 5880    ) -> Div {
 5881        for action in self.workspace_actions.iter() {
 5882            div = (action)(div, self, window, cx)
 5883        }
 5884        div
 5885    }
 5886
 5887    pub fn has_active_modal(&self, _: &mut Window, cx: &mut App) -> bool {
 5888        self.modal_layer.read(cx).has_active_modal()
 5889    }
 5890
 5891    pub fn active_modal<V: ManagedView + 'static>(&self, cx: &App) -> Option<Entity<V>> {
 5892        self.modal_layer.read(cx).active_modal()
 5893    }
 5894
 5895    pub fn toggle_modal<V: ModalView, B>(&mut self, window: &mut Window, cx: &mut App, build: B)
 5896    where
 5897        B: FnOnce(&mut Window, &mut Context<V>) -> V,
 5898    {
 5899        self.modal_layer.update(cx, |modal_layer, cx| {
 5900            modal_layer.toggle_modal(window, cx, build)
 5901        })
 5902    }
 5903
 5904    pub fn hide_modal(&mut self, window: &mut Window, cx: &mut App) -> bool {
 5905        self.modal_layer
 5906            .update(cx, |modal_layer, cx| modal_layer.hide_modal(window, cx))
 5907    }
 5908
 5909    pub fn toggle_status_toast<V: ToastView>(&mut self, entity: Entity<V>, cx: &mut App) {
 5910        self.toast_layer
 5911            .update(cx, |toast_layer, cx| toast_layer.toggle_toast(cx, entity))
 5912    }
 5913
 5914    pub fn toggle_centered_layout(
 5915        &mut self,
 5916        _: &ToggleCenteredLayout,
 5917        _: &mut Window,
 5918        cx: &mut Context<Self>,
 5919    ) {
 5920        self.centered_layout = !self.centered_layout;
 5921        if let Some(database_id) = self.database_id() {
 5922            cx.background_spawn(DB.set_centered_layout(database_id, self.centered_layout))
 5923                .detach_and_log_err(cx);
 5924        }
 5925        cx.notify();
 5926    }
 5927
 5928    fn adjust_padding(padding: Option<f32>) -> f32 {
 5929        padding
 5930            .unwrap_or(Self::DEFAULT_PADDING)
 5931            .clamp(0.0, Self::MAX_PADDING)
 5932    }
 5933
 5934    fn render_dock(
 5935        &self,
 5936        position: DockPosition,
 5937        dock: &Entity<Dock>,
 5938        window: &mut Window,
 5939        cx: &mut App,
 5940    ) -> Option<Div> {
 5941        if self.zoomed_position == Some(position) {
 5942            return None;
 5943        }
 5944
 5945        let leader_border = dock.read(cx).active_panel().and_then(|panel| {
 5946            let pane = panel.pane(cx)?;
 5947            let follower_states = &self.follower_states;
 5948            leader_border_for_pane(follower_states, &pane, window, cx)
 5949        });
 5950
 5951        Some(
 5952            div()
 5953                .flex()
 5954                .flex_none()
 5955                .overflow_hidden()
 5956                .child(dock.clone())
 5957                .children(leader_border),
 5958        )
 5959    }
 5960
 5961    pub fn for_window(window: &mut Window, _: &mut App) -> Option<Entity<Workspace>> {
 5962        window.root().flatten()
 5963    }
 5964
 5965    pub fn zoomed_item(&self) -> Option<&AnyWeakView> {
 5966        self.zoomed.as_ref()
 5967    }
 5968
 5969    pub fn activate_next_window(&mut self, cx: &mut Context<Self>) {
 5970        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 5971            return;
 5972        };
 5973        let windows = cx.windows();
 5974        let next_window =
 5975            SystemWindowTabController::get_next_tab_group_window(cx, current_window_id).or_else(
 5976                || {
 5977                    windows
 5978                        .iter()
 5979                        .cycle()
 5980                        .skip_while(|window| window.window_id() != current_window_id)
 5981                        .nth(1)
 5982                },
 5983            );
 5984
 5985        if let Some(window) = next_window {
 5986            window
 5987                .update(cx, |_, window, _| window.activate_window())
 5988                .ok();
 5989        }
 5990    }
 5991
 5992    pub fn activate_previous_window(&mut self, cx: &mut Context<Self>) {
 5993        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 5994            return;
 5995        };
 5996        let windows = cx.windows();
 5997        let prev_window =
 5998            SystemWindowTabController::get_prev_tab_group_window(cx, current_window_id).or_else(
 5999                || {
 6000                    windows
 6001                        .iter()
 6002                        .rev()
 6003                        .cycle()
 6004                        .skip_while(|window| window.window_id() != current_window_id)
 6005                        .nth(1)
 6006                },
 6007            );
 6008
 6009        if let Some(window) = prev_window {
 6010            window
 6011                .update(cx, |_, window, _| window.activate_window())
 6012                .ok();
 6013        }
 6014    }
 6015
 6016    pub fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
 6017        if cx.stop_active_drag(window) {
 6018        } else if let Some((notification_id, _)) = self.notifications.pop() {
 6019            dismiss_app_notification(&notification_id, cx);
 6020        } else {
 6021            cx.propagate();
 6022        }
 6023    }
 6024
 6025    fn adjust_dock_size_by_px(
 6026        &mut self,
 6027        panel_size: Pixels,
 6028        dock_pos: DockPosition,
 6029        px: Pixels,
 6030        window: &mut Window,
 6031        cx: &mut Context<Self>,
 6032    ) {
 6033        match dock_pos {
 6034            DockPosition::Left => self.resize_left_dock(panel_size + px, window, cx),
 6035            DockPosition::Right => self.resize_right_dock(panel_size + px, window, cx),
 6036            DockPosition::Bottom => self.resize_bottom_dock(panel_size + px, window, cx),
 6037        }
 6038    }
 6039
 6040    fn resize_left_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 6041        let size = new_size.min(self.bounds.right() - RESIZE_HANDLE_SIZE);
 6042
 6043        self.left_dock.update(cx, |left_dock, cx| {
 6044            if WorkspaceSettings::get_global(cx)
 6045                .resize_all_panels_in_dock
 6046                .contains(&DockPosition::Left)
 6047            {
 6048                left_dock.resize_all_panels(Some(size), window, cx);
 6049            } else {
 6050                left_dock.resize_active_panel(Some(size), window, cx);
 6051            }
 6052        });
 6053    }
 6054
 6055    fn resize_right_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 6056        let mut size = new_size.max(self.bounds.left() - RESIZE_HANDLE_SIZE);
 6057        self.left_dock.read_with(cx, |left_dock, cx| {
 6058            let left_dock_size = left_dock
 6059                .active_panel_size(window, cx)
 6060                .unwrap_or(Pixels::ZERO);
 6061            if left_dock_size + size > self.bounds.right() {
 6062                size = self.bounds.right() - left_dock_size
 6063            }
 6064        });
 6065        self.right_dock.update(cx, |right_dock, cx| {
 6066            if WorkspaceSettings::get_global(cx)
 6067                .resize_all_panels_in_dock
 6068                .contains(&DockPosition::Right)
 6069            {
 6070                right_dock.resize_all_panels(Some(size), window, cx);
 6071            } else {
 6072                right_dock.resize_active_panel(Some(size), window, cx);
 6073            }
 6074        });
 6075    }
 6076
 6077    fn resize_bottom_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 6078        let size = new_size.min(self.bounds.bottom() - RESIZE_HANDLE_SIZE - self.bounds.top());
 6079        self.bottom_dock.update(cx, |bottom_dock, cx| {
 6080            if WorkspaceSettings::get_global(cx)
 6081                .resize_all_panels_in_dock
 6082                .contains(&DockPosition::Bottom)
 6083            {
 6084                bottom_dock.resize_all_panels(Some(size), window, cx);
 6085            } else {
 6086                bottom_dock.resize_active_panel(Some(size), window, cx);
 6087            }
 6088        });
 6089    }
 6090
 6091    fn toggle_edit_predictions_all_files(
 6092        &mut self,
 6093        _: &ToggleEditPrediction,
 6094        _window: &mut Window,
 6095        cx: &mut Context<Self>,
 6096    ) {
 6097        let fs = self.project().read(cx).fs().clone();
 6098        let show_edit_predictions = all_language_settings(None, cx).show_edit_predictions(None, cx);
 6099        update_settings_file(fs, cx, move |file, _| {
 6100            file.project.all_languages.defaults.show_edit_predictions = Some(!show_edit_predictions)
 6101        });
 6102    }
 6103}
 6104
 6105fn leader_border_for_pane(
 6106    follower_states: &HashMap<CollaboratorId, FollowerState>,
 6107    pane: &Entity<Pane>,
 6108    _: &Window,
 6109    cx: &App,
 6110) -> Option<Div> {
 6111    let (leader_id, _follower_state) = follower_states.iter().find_map(|(leader_id, state)| {
 6112        if state.pane() == pane {
 6113            Some((*leader_id, state))
 6114        } else {
 6115            None
 6116        }
 6117    })?;
 6118
 6119    let mut leader_color = match leader_id {
 6120        CollaboratorId::PeerId(leader_peer_id) => {
 6121            let room = ActiveCall::try_global(cx)?.read(cx).room()?.read(cx);
 6122            let leader = room.remote_participant_for_peer_id(leader_peer_id)?;
 6123
 6124            cx.theme()
 6125                .players()
 6126                .color_for_participant(leader.participant_index.0)
 6127                .cursor
 6128        }
 6129        CollaboratorId::Agent => cx.theme().players().agent().cursor,
 6130    };
 6131    leader_color.fade_out(0.3);
 6132    Some(
 6133        div()
 6134            .absolute()
 6135            .size_full()
 6136            .left_0()
 6137            .top_0()
 6138            .border_2()
 6139            .border_color(leader_color),
 6140    )
 6141}
 6142
 6143fn window_bounds_env_override() -> Option<Bounds<Pixels>> {
 6144    ZED_WINDOW_POSITION
 6145        .zip(*ZED_WINDOW_SIZE)
 6146        .map(|(position, size)| Bounds {
 6147            origin: position,
 6148            size,
 6149        })
 6150}
 6151
 6152fn open_items(
 6153    serialized_workspace: Option<SerializedWorkspace>,
 6154    mut project_paths_to_open: Vec<(PathBuf, Option<ProjectPath>)>,
 6155    window: &mut Window,
 6156    cx: &mut Context<Workspace>,
 6157) -> impl 'static + Future<Output = Result<Vec<Option<Result<Box<dyn ItemHandle>>>>>> + use<> {
 6158    let restored_items = serialized_workspace.map(|serialized_workspace| {
 6159        Workspace::load_workspace(
 6160            serialized_workspace,
 6161            project_paths_to_open
 6162                .iter()
 6163                .map(|(_, project_path)| project_path)
 6164                .cloned()
 6165                .collect(),
 6166            window,
 6167            cx,
 6168        )
 6169    });
 6170
 6171    cx.spawn_in(window, async move |workspace, cx| {
 6172        let mut opened_items = Vec::with_capacity(project_paths_to_open.len());
 6173
 6174        if let Some(restored_items) = restored_items {
 6175            let restored_items = restored_items.await?;
 6176
 6177            let restored_project_paths = restored_items
 6178                .iter()
 6179                .filter_map(|item| {
 6180                    cx.update(|_, cx| item.as_ref()?.project_path(cx))
 6181                        .ok()
 6182                        .flatten()
 6183                })
 6184                .collect::<HashSet<_>>();
 6185
 6186            for restored_item in restored_items {
 6187                opened_items.push(restored_item.map(Ok));
 6188            }
 6189
 6190            project_paths_to_open
 6191                .iter_mut()
 6192                .for_each(|(_, project_path)| {
 6193                    if let Some(project_path_to_open) = project_path
 6194                        && restored_project_paths.contains(project_path_to_open)
 6195                    {
 6196                        *project_path = None;
 6197                    }
 6198                });
 6199        } else {
 6200            for _ in 0..project_paths_to_open.len() {
 6201                opened_items.push(None);
 6202            }
 6203        }
 6204        assert!(opened_items.len() == project_paths_to_open.len());
 6205
 6206        let tasks =
 6207            project_paths_to_open
 6208                .into_iter()
 6209                .enumerate()
 6210                .map(|(ix, (abs_path, project_path))| {
 6211                    let workspace = workspace.clone();
 6212                    cx.spawn(async move |cx| {
 6213                        let file_project_path = project_path?;
 6214                        let abs_path_task = workspace.update(cx, |workspace, cx| {
 6215                            workspace.project().update(cx, |project, cx| {
 6216                                project.resolve_abs_path(abs_path.to_string_lossy().as_ref(), cx)
 6217                            })
 6218                        });
 6219
 6220                        // We only want to open file paths here. If one of the items
 6221                        // here is a directory, it was already opened further above
 6222                        // with a `find_or_create_worktree`.
 6223                        if let Ok(task) = abs_path_task
 6224                            && task.await.is_none_or(|p| p.is_file())
 6225                        {
 6226                            return Some((
 6227                                ix,
 6228                                workspace
 6229                                    .update_in(cx, |workspace, window, cx| {
 6230                                        workspace.open_path(
 6231                                            file_project_path,
 6232                                            None,
 6233                                            true,
 6234                                            window,
 6235                                            cx,
 6236                                        )
 6237                                    })
 6238                                    .log_err()?
 6239                                    .await,
 6240                            ));
 6241                        }
 6242                        None
 6243                    })
 6244                });
 6245
 6246        let tasks = tasks.collect::<Vec<_>>();
 6247
 6248        let tasks = futures::future::join_all(tasks);
 6249        for (ix, path_open_result) in tasks.await.into_iter().flatten() {
 6250            opened_items[ix] = Some(path_open_result);
 6251        }
 6252
 6253        Ok(opened_items)
 6254    })
 6255}
 6256
 6257enum ActivateInDirectionTarget {
 6258    Pane(Entity<Pane>),
 6259    Dock(Entity<Dock>),
 6260}
 6261
 6262fn notify_if_database_failed(workspace: WindowHandle<Workspace>, cx: &mut AsyncApp) {
 6263    workspace
 6264        .update(cx, |workspace, _, cx| {
 6265            if (*db::ALL_FILE_DB_FAILED).load(std::sync::atomic::Ordering::Acquire) {
 6266                struct DatabaseFailedNotification;
 6267
 6268                workspace.show_notification(
 6269                    NotificationId::unique::<DatabaseFailedNotification>(),
 6270                    cx,
 6271                    |cx| {
 6272                        cx.new(|cx| {
 6273                            MessageNotification::new("Failed to load the database file.", cx)
 6274                                .primary_message("File an Issue")
 6275                                .primary_icon(IconName::Plus)
 6276                                .primary_on_click(|window, cx| {
 6277                                    window.dispatch_action(Box::new(FileBugReport), cx)
 6278                                })
 6279                        })
 6280                    },
 6281                );
 6282            }
 6283        })
 6284        .log_err();
 6285}
 6286
 6287fn px_with_ui_font_fallback(val: u32, cx: &Context<Workspace>) -> Pixels {
 6288    if val == 0 {
 6289        ThemeSettings::get_global(cx).ui_font_size(cx)
 6290    } else {
 6291        px(val as f32)
 6292    }
 6293}
 6294
 6295fn adjust_active_dock_size_by_px(
 6296    px: Pixels,
 6297    workspace: &mut Workspace,
 6298    window: &mut Window,
 6299    cx: &mut Context<Workspace>,
 6300) {
 6301    let Some(active_dock) = workspace
 6302        .all_docks()
 6303        .into_iter()
 6304        .find(|dock| dock.focus_handle(cx).contains_focused(window, cx))
 6305    else {
 6306        return;
 6307    };
 6308    let dock = active_dock.read(cx);
 6309    let Some(panel_size) = dock.active_panel_size(window, cx) else {
 6310        return;
 6311    };
 6312    let dock_pos = dock.position();
 6313    workspace.adjust_dock_size_by_px(panel_size, dock_pos, px, window, cx);
 6314}
 6315
 6316fn adjust_open_docks_size_by_px(
 6317    px: Pixels,
 6318    workspace: &mut Workspace,
 6319    window: &mut Window,
 6320    cx: &mut Context<Workspace>,
 6321) {
 6322    let docks = workspace
 6323        .all_docks()
 6324        .into_iter()
 6325        .filter_map(|dock| {
 6326            if dock.read(cx).is_open() {
 6327                let dock = dock.read(cx);
 6328                let panel_size = dock.active_panel_size(window, cx)?;
 6329                let dock_pos = dock.position();
 6330                Some((panel_size, dock_pos, px))
 6331            } else {
 6332                None
 6333            }
 6334        })
 6335        .collect::<Vec<_>>();
 6336
 6337    docks
 6338        .into_iter()
 6339        .for_each(|(panel_size, dock_pos, offset)| {
 6340            workspace.adjust_dock_size_by_px(panel_size, dock_pos, offset, window, cx);
 6341        });
 6342}
 6343
 6344impl Focusable for Workspace {
 6345    fn focus_handle(&self, cx: &App) -> FocusHandle {
 6346        self.active_pane.focus_handle(cx)
 6347    }
 6348}
 6349
 6350#[derive(Clone)]
 6351struct DraggedDock(DockPosition);
 6352
 6353impl Render for DraggedDock {
 6354    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
 6355        gpui::Empty
 6356    }
 6357}
 6358
 6359impl Render for Workspace {
 6360    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 6361        let mut context = KeyContext::new_with_defaults();
 6362        context.add("Workspace");
 6363        context.set("keyboard_layout", cx.keyboard_layout().name().to_string());
 6364        if let Some(status) = self
 6365            .debugger_provider
 6366            .as_ref()
 6367            .and_then(|provider| provider.active_thread_state(cx))
 6368        {
 6369            match status {
 6370                ThreadStatus::Running | ThreadStatus::Stepping => {
 6371                    context.add("debugger_running");
 6372                }
 6373                ThreadStatus::Stopped => context.add("debugger_stopped"),
 6374                ThreadStatus::Exited | ThreadStatus::Ended => {}
 6375            }
 6376        }
 6377
 6378        if self.left_dock.read(cx).is_open() {
 6379            if let Some(active_panel) = self.left_dock.read(cx).active_panel() {
 6380                context.set("left_dock", active_panel.panel_key());
 6381            }
 6382        }
 6383
 6384        if self.right_dock.read(cx).is_open() {
 6385            if let Some(active_panel) = self.right_dock.read(cx).active_panel() {
 6386                context.set("right_dock", active_panel.panel_key());
 6387            }
 6388        }
 6389
 6390        if self.bottom_dock.read(cx).is_open() {
 6391            if let Some(active_panel) = self.bottom_dock.read(cx).active_panel() {
 6392                context.set("bottom_dock", active_panel.panel_key());
 6393            }
 6394        }
 6395
 6396        let centered_layout = self.centered_layout
 6397            && self.center.panes().len() == 1
 6398            && self.active_item(cx).is_some();
 6399        let render_padding = |size| {
 6400            (size > 0.0).then(|| {
 6401                div()
 6402                    .h_full()
 6403                    .w(relative(size))
 6404                    .bg(cx.theme().colors().editor_background)
 6405                    .border_color(cx.theme().colors().pane_group_border)
 6406            })
 6407        };
 6408        let paddings = if centered_layout {
 6409            let settings = WorkspaceSettings::get_global(cx).centered_layout;
 6410            (
 6411                render_padding(Self::adjust_padding(settings.left_padding)),
 6412                render_padding(Self::adjust_padding(settings.right_padding)),
 6413            )
 6414        } else {
 6415            (None, None)
 6416        };
 6417        let ui_font = theme::setup_ui_font(window, cx);
 6418
 6419        let theme = cx.theme().clone();
 6420        let colors = theme.colors();
 6421        let notification_entities = self
 6422            .notifications
 6423            .iter()
 6424            .map(|(_, notification)| notification.entity_id())
 6425            .collect::<Vec<_>>();
 6426        let bottom_dock_layout = WorkspaceSettings::get_global(cx).bottom_dock_layout;
 6427
 6428        client_side_decorations(
 6429            self.actions(div(), window, cx)
 6430                .key_context(context)
 6431                .relative()
 6432                .size_full()
 6433                .flex()
 6434                .flex_col()
 6435                .font(ui_font)
 6436                .gap_0()
 6437                .justify_start()
 6438                .items_start()
 6439                .text_color(colors.text)
 6440                .overflow_hidden()
 6441                .children(self.titlebar_item.clone())
 6442                .on_modifiers_changed(move |_, _, cx| {
 6443                    for &id in &notification_entities {
 6444                        cx.notify(id);
 6445                    }
 6446                })
 6447                .child(
 6448                    div()
 6449                        .size_full()
 6450                        .relative()
 6451                        .flex_1()
 6452                        .flex()
 6453                        .flex_col()
 6454                        .child(
 6455                            div()
 6456                                .id("workspace")
 6457                                .bg(colors.background)
 6458                                .relative()
 6459                                .flex_1()
 6460                                .w_full()
 6461                                .flex()
 6462                                .flex_col()
 6463                                .overflow_hidden()
 6464                                .border_t_1()
 6465                                .border_b_1()
 6466                                .border_color(colors.border)
 6467                                .child({
 6468                                    let this = cx.entity();
 6469                                    canvas(
 6470                                        move |bounds, window, cx| {
 6471                                            this.update(cx, |this, cx| {
 6472                                                let bounds_changed = this.bounds != bounds;
 6473                                                this.bounds = bounds;
 6474
 6475                                                if bounds_changed {
 6476                                                    this.left_dock.update(cx, |dock, cx| {
 6477                                                        dock.clamp_panel_size(
 6478                                                            bounds.size.width,
 6479                                                            window,
 6480                                                            cx,
 6481                                                        )
 6482                                                    });
 6483
 6484                                                    this.right_dock.update(cx, |dock, cx| {
 6485                                                        dock.clamp_panel_size(
 6486                                                            bounds.size.width,
 6487                                                            window,
 6488                                                            cx,
 6489                                                        )
 6490                                                    });
 6491
 6492                                                    this.bottom_dock.update(cx, |dock, cx| {
 6493                                                        dock.clamp_panel_size(
 6494                                                            bounds.size.height,
 6495                                                            window,
 6496                                                            cx,
 6497                                                        )
 6498                                                    });
 6499                                                }
 6500                                            })
 6501                                        },
 6502                                        |_, _, _, _| {},
 6503                                    )
 6504                                    .absolute()
 6505                                    .size_full()
 6506                                })
 6507                                .when(self.zoomed.is_none(), |this| {
 6508                                    this.on_drag_move(cx.listener(
 6509                                        move |workspace,
 6510                                              e: &DragMoveEvent<DraggedDock>,
 6511                                              window,
 6512                                              cx| {
 6513                                            if workspace.previous_dock_drag_coordinates
 6514                                                != Some(e.event.position)
 6515                                            {
 6516                                                workspace.previous_dock_drag_coordinates =
 6517                                                    Some(e.event.position);
 6518                                                match e.drag(cx).0 {
 6519                                                    DockPosition::Left => {
 6520                                                        workspace.resize_left_dock(
 6521                                                            e.event.position.x
 6522                                                                - workspace.bounds.left(),
 6523                                                            window,
 6524                                                            cx,
 6525                                                        );
 6526                                                    }
 6527                                                    DockPosition::Right => {
 6528                                                        workspace.resize_right_dock(
 6529                                                            workspace.bounds.right()
 6530                                                                - e.event.position.x,
 6531                                                            window,
 6532                                                            cx,
 6533                                                        );
 6534                                                    }
 6535                                                    DockPosition::Bottom => {
 6536                                                        workspace.resize_bottom_dock(
 6537                                                            workspace.bounds.bottom()
 6538                                                                - e.event.position.y,
 6539                                                            window,
 6540                                                            cx,
 6541                                                        );
 6542                                                    }
 6543                                                };
 6544                                                workspace.serialize_workspace(window, cx);
 6545                                            }
 6546                                        },
 6547                                    ))
 6548                                })
 6549                                .child({
 6550                                    match bottom_dock_layout {
 6551                                        BottomDockLayout::Full => div()
 6552                                            .flex()
 6553                                            .flex_col()
 6554                                            .h_full()
 6555                                            .child(
 6556                                                div()
 6557                                                    .flex()
 6558                                                    .flex_row()
 6559                                                    .flex_1()
 6560                                                    .overflow_hidden()
 6561                                                    .children(self.render_dock(
 6562                                                        DockPosition::Left,
 6563                                                        &self.left_dock,
 6564                                                        window,
 6565                                                        cx,
 6566                                                    ))
 6567                                                    .child(
 6568                                                        div()
 6569                                                            .flex()
 6570                                                            .flex_col()
 6571                                                            .flex_1()
 6572                                                            .overflow_hidden()
 6573                                                            .child(
 6574                                                                h_flex()
 6575                                                                    .flex_1()
 6576                                                                    .when_some(
 6577                                                                        paddings.0,
 6578                                                                        |this, p| {
 6579                                                                            this.child(
 6580                                                                                p.border_r_1(),
 6581                                                                            )
 6582                                                                        },
 6583                                                                    )
 6584                                                                    .child(self.center.render(
 6585                                                                        self.zoomed.as_ref(),
 6586                                                                        &PaneRenderContext {
 6587                                                                            follower_states:
 6588                                                                                &self.follower_states,
 6589                                                                            active_call: self.active_call(),
 6590                                                                            active_pane: &self.active_pane,
 6591                                                                            app_state: &self.app_state,
 6592                                                                            project: &self.project,
 6593                                                                            workspace: &self.weak_self,
 6594                                                                        },
 6595                                                                        window,
 6596                                                                        cx,
 6597                                                                    ))
 6598                                                                    .when_some(
 6599                                                                        paddings.1,
 6600                                                                        |this, p| {
 6601                                                                            this.child(
 6602                                                                                p.border_l_1(),
 6603                                                                            )
 6604                                                                        },
 6605                                                                    ),
 6606                                                            ),
 6607                                                    )
 6608                                                    .children(self.render_dock(
 6609                                                        DockPosition::Right,
 6610                                                        &self.right_dock,
 6611                                                        window,
 6612                                                        cx,
 6613                                                    )),
 6614                                            )
 6615                                            .child(div().w_full().children(self.render_dock(
 6616                                                DockPosition::Bottom,
 6617                                                &self.bottom_dock,
 6618                                                window,
 6619                                                cx
 6620                                            ))),
 6621
 6622                                        BottomDockLayout::LeftAligned => div()
 6623                                            .flex()
 6624                                            .flex_row()
 6625                                            .h_full()
 6626                                            .child(
 6627                                                div()
 6628                                                    .flex()
 6629                                                    .flex_col()
 6630                                                    .flex_1()
 6631                                                    .h_full()
 6632                                                    .child(
 6633                                                        div()
 6634                                                            .flex()
 6635                                                            .flex_row()
 6636                                                            .flex_1()
 6637                                                            .children(self.render_dock(DockPosition::Left, &self.left_dock, window, cx))
 6638                                                            .child(
 6639                                                                div()
 6640                                                                    .flex()
 6641                                                                    .flex_col()
 6642                                                                    .flex_1()
 6643                                                                    .overflow_hidden()
 6644                                                                    .child(
 6645                                                                        h_flex()
 6646                                                                            .flex_1()
 6647                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6648                                                                            .child(self.center.render(
 6649                                                                                self.zoomed.as_ref(),
 6650                                                                                &PaneRenderContext {
 6651                                                                                    follower_states:
 6652                                                                                        &self.follower_states,
 6653                                                                                    active_call: self.active_call(),
 6654                                                                                    active_pane: &self.active_pane,
 6655                                                                                    app_state: &self.app_state,
 6656                                                                                    project: &self.project,
 6657                                                                                    workspace: &self.weak_self,
 6658                                                                                },
 6659                                                                                window,
 6660                                                                                cx,
 6661                                                                            ))
 6662                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6663                                                                    )
 6664                                                            )
 6665                                                    )
 6666                                                    .child(
 6667                                                        div()
 6668                                                            .w_full()
 6669                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6670                                                    ),
 6671                                            )
 6672                                            .children(self.render_dock(
 6673                                                DockPosition::Right,
 6674                                                &self.right_dock,
 6675                                                window,
 6676                                                cx,
 6677                                            )),
 6678
 6679                                        BottomDockLayout::RightAligned => div()
 6680                                            .flex()
 6681                                            .flex_row()
 6682                                            .h_full()
 6683                                            .children(self.render_dock(
 6684                                                DockPosition::Left,
 6685                                                &self.left_dock,
 6686                                                window,
 6687                                                cx,
 6688                                            ))
 6689                                            .child(
 6690                                                div()
 6691                                                    .flex()
 6692                                                    .flex_col()
 6693                                                    .flex_1()
 6694                                                    .h_full()
 6695                                                    .child(
 6696                                                        div()
 6697                                                            .flex()
 6698                                                            .flex_row()
 6699                                                            .flex_1()
 6700                                                            .child(
 6701                                                                div()
 6702                                                                    .flex()
 6703                                                                    .flex_col()
 6704                                                                    .flex_1()
 6705                                                                    .overflow_hidden()
 6706                                                                    .child(
 6707                                                                        h_flex()
 6708                                                                            .flex_1()
 6709                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6710                                                                            .child(self.center.render(
 6711                                                                                self.zoomed.as_ref(),
 6712                                                                                &PaneRenderContext {
 6713                                                                                    follower_states:
 6714                                                                                        &self.follower_states,
 6715                                                                                    active_call: self.active_call(),
 6716                                                                                    active_pane: &self.active_pane,
 6717                                                                                    app_state: &self.app_state,
 6718                                                                                    project: &self.project,
 6719                                                                                    workspace: &self.weak_self,
 6720                                                                                },
 6721                                                                                window,
 6722                                                                                cx,
 6723                                                                            ))
 6724                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6725                                                                    )
 6726                                                            )
 6727                                                            .children(self.render_dock(DockPosition::Right, &self.right_dock, window, cx))
 6728                                                    )
 6729                                                    .child(
 6730                                                        div()
 6731                                                            .w_full()
 6732                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6733                                                    ),
 6734                                            ),
 6735
 6736                                        BottomDockLayout::Contained => div()
 6737                                            .flex()
 6738                                            .flex_row()
 6739                                            .h_full()
 6740                                            .children(self.render_dock(
 6741                                                DockPosition::Left,
 6742                                                &self.left_dock,
 6743                                                window,
 6744                                                cx,
 6745                                            ))
 6746                                            .child(
 6747                                                div()
 6748                                                    .flex()
 6749                                                    .flex_col()
 6750                                                    .flex_1()
 6751                                                    .overflow_hidden()
 6752                                                    .child(
 6753                                                        h_flex()
 6754                                                            .flex_1()
 6755                                                            .when_some(paddings.0, |this, p| {
 6756                                                                this.child(p.border_r_1())
 6757                                                            })
 6758                                                            .child(self.center.render(
 6759                                                                self.zoomed.as_ref(),
 6760                                                                &PaneRenderContext {
 6761                                                                    follower_states:
 6762                                                                        &self.follower_states,
 6763                                                                    active_call: self.active_call(),
 6764                                                                    active_pane: &self.active_pane,
 6765                                                                    app_state: &self.app_state,
 6766                                                                    project: &self.project,
 6767                                                                    workspace: &self.weak_self,
 6768                                                                },
 6769                                                                window,
 6770                                                                cx,
 6771                                                            ))
 6772                                                            .when_some(paddings.1, |this, p| {
 6773                                                                this.child(p.border_l_1())
 6774                                                            }),
 6775                                                    )
 6776                                                    .children(self.render_dock(
 6777                                                        DockPosition::Bottom,
 6778                                                        &self.bottom_dock,
 6779                                                        window,
 6780                                                        cx,
 6781                                                    )),
 6782                                            )
 6783                                            .children(self.render_dock(
 6784                                                DockPosition::Right,
 6785                                                &self.right_dock,
 6786                                                window,
 6787                                                cx,
 6788                                            )),
 6789                                    }
 6790                                })
 6791                                .children(self.zoomed.as_ref().and_then(|view| {
 6792                                    let zoomed_view = view.upgrade()?;
 6793                                    let div = div()
 6794                                        .occlude()
 6795                                        .absolute()
 6796                                        .overflow_hidden()
 6797                                        .border_color(colors.border)
 6798                                        .bg(colors.background)
 6799                                        .child(zoomed_view)
 6800                                        .inset_0()
 6801                                        .shadow_lg();
 6802
 6803                                    if !WorkspaceSettings::get_global(cx).zoomed_padding {
 6804                                       return Some(div);
 6805                                    }
 6806
 6807                                    Some(match self.zoomed_position {
 6808                                        Some(DockPosition::Left) => div.right_2().border_r_1(),
 6809                                        Some(DockPosition::Right) => div.left_2().border_l_1(),
 6810                                        Some(DockPosition::Bottom) => div.top_2().border_t_1(),
 6811                                        None => {
 6812                                            div.top_2().bottom_2().left_2().right_2().border_1()
 6813                                        }
 6814                                    })
 6815                                }))
 6816                                .children(self.render_notifications(window, cx)),
 6817                        )
 6818                        .when(self.status_bar_visible(cx), |parent| {
 6819                            parent.child(self.status_bar.clone())
 6820                        })
 6821                        .child(self.modal_layer.clone())
 6822                        .child(self.toast_layer.clone()),
 6823                ),
 6824            window,
 6825            cx,
 6826        )
 6827    }
 6828}
 6829
 6830impl WorkspaceStore {
 6831    pub fn new(client: Arc<Client>, cx: &mut Context<Self>) -> Self {
 6832        Self {
 6833            workspaces: Default::default(),
 6834            _subscriptions: vec![
 6835                client.add_request_handler(cx.weak_entity(), Self::handle_follow),
 6836                client.add_message_handler(cx.weak_entity(), Self::handle_update_followers),
 6837            ],
 6838            client,
 6839        }
 6840    }
 6841
 6842    pub fn update_followers(
 6843        &self,
 6844        project_id: Option<u64>,
 6845        update: proto::update_followers::Variant,
 6846        cx: &App,
 6847    ) -> Option<()> {
 6848        let active_call = ActiveCall::try_global(cx)?;
 6849        let room_id = active_call.read(cx).room()?.read(cx).id();
 6850        self.client
 6851            .send(proto::UpdateFollowers {
 6852                room_id,
 6853                project_id,
 6854                variant: Some(update),
 6855            })
 6856            .log_err()
 6857    }
 6858
 6859    pub async fn handle_follow(
 6860        this: Entity<Self>,
 6861        envelope: TypedEnvelope<proto::Follow>,
 6862        mut cx: AsyncApp,
 6863    ) -> Result<proto::FollowResponse> {
 6864        this.update(&mut cx, |this, cx| {
 6865            let follower = Follower {
 6866                project_id: envelope.payload.project_id,
 6867                peer_id: envelope.original_sender_id()?,
 6868            };
 6869
 6870            let mut response = proto::FollowResponse::default();
 6871            this.workspaces.retain(|workspace| {
 6872                workspace
 6873                    .update(cx, |workspace, window, cx| {
 6874                        let handler_response =
 6875                            workspace.handle_follow(follower.project_id, window, cx);
 6876                        if let Some(active_view) = handler_response.active_view
 6877                            && workspace.project.read(cx).remote_id() == follower.project_id
 6878                        {
 6879                            response.active_view = Some(active_view)
 6880                        }
 6881                    })
 6882                    .is_ok()
 6883            });
 6884
 6885            Ok(response)
 6886        })?
 6887    }
 6888
 6889    async fn handle_update_followers(
 6890        this: Entity<Self>,
 6891        envelope: TypedEnvelope<proto::UpdateFollowers>,
 6892        mut cx: AsyncApp,
 6893    ) -> Result<()> {
 6894        let leader_id = envelope.original_sender_id()?;
 6895        let update = envelope.payload;
 6896
 6897        this.update(&mut cx, |this, cx| {
 6898            this.workspaces.retain(|workspace| {
 6899                workspace
 6900                    .update(cx, |workspace, window, cx| {
 6901                        let project_id = workspace.project.read(cx).remote_id();
 6902                        if update.project_id != project_id && update.project_id.is_some() {
 6903                            return;
 6904                        }
 6905                        workspace.handle_update_followers(leader_id, update.clone(), window, cx);
 6906                    })
 6907                    .is_ok()
 6908            });
 6909            Ok(())
 6910        })?
 6911    }
 6912
 6913    pub fn workspaces(&self) -> &HashSet<WindowHandle<Workspace>> {
 6914        &self.workspaces
 6915    }
 6916}
 6917
 6918impl ViewId {
 6919    pub(crate) fn from_proto(message: proto::ViewId) -> Result<Self> {
 6920        Ok(Self {
 6921            creator: message
 6922                .creator
 6923                .map(CollaboratorId::PeerId)
 6924                .context("creator is missing")?,
 6925            id: message.id,
 6926        })
 6927    }
 6928
 6929    pub(crate) fn to_proto(self) -> Option<proto::ViewId> {
 6930        if let CollaboratorId::PeerId(peer_id) = self.creator {
 6931            Some(proto::ViewId {
 6932                creator: Some(peer_id),
 6933                id: self.id,
 6934            })
 6935        } else {
 6936            None
 6937        }
 6938    }
 6939}
 6940
 6941impl FollowerState {
 6942    fn pane(&self) -> &Entity<Pane> {
 6943        self.dock_pane.as_ref().unwrap_or(&self.center_pane)
 6944    }
 6945}
 6946
 6947pub trait WorkspaceHandle {
 6948    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath>;
 6949}
 6950
 6951impl WorkspaceHandle for Entity<Workspace> {
 6952    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath> {
 6953        self.read(cx)
 6954            .worktrees(cx)
 6955            .flat_map(|worktree| {
 6956                let worktree_id = worktree.read(cx).id();
 6957                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
 6958                    worktree_id,
 6959                    path: f.path.clone(),
 6960                })
 6961            })
 6962            .collect::<Vec<_>>()
 6963    }
 6964}
 6965
 6966pub async fn last_opened_workspace_location() -> Option<(SerializedWorkspaceLocation, PathList)> {
 6967    DB.last_workspace().await.log_err().flatten()
 6968}
 6969
 6970pub fn last_session_workspace_locations(
 6971    last_session_id: &str,
 6972    last_session_window_stack: Option<Vec<WindowId>>,
 6973) -> Option<Vec<(SerializedWorkspaceLocation, PathList)>> {
 6974    DB.last_session_workspace_locations(last_session_id, last_session_window_stack)
 6975        .log_err()
 6976}
 6977
 6978actions!(
 6979    collab,
 6980    [
 6981        /// Opens the channel notes for the current call.
 6982        ///
 6983        /// If you want to open a specific channel, use `zed::OpenZedUrl` with a channel notes URL -
 6984        /// can be copied via "Copy link to section" in the context menu of the channel notes
 6985        /// buffer. These URLs look like `https://zed.dev/channel/channel-name-CHANNEL_ID/notes`.
 6986        OpenChannelNotes,
 6987        /// Mutes your microphone.
 6988        Mute,
 6989        /// Deafens yourself (mute both microphone and speakers).
 6990        Deafen,
 6991        /// Leaves the current call.
 6992        LeaveCall,
 6993        /// Shares the current project with collaborators.
 6994        ShareProject,
 6995        /// Shares your screen with collaborators.
 6996        ScreenShare
 6997    ]
 6998);
 6999actions!(
 7000    zed,
 7001    [
 7002        /// Opens the Zed log file.
 7003        OpenLog
 7004    ]
 7005);
 7006
 7007async fn join_channel_internal(
 7008    channel_id: ChannelId,
 7009    app_state: &Arc<AppState>,
 7010    requesting_window: Option<WindowHandle<Workspace>>,
 7011    active_call: &Entity<ActiveCall>,
 7012    cx: &mut AsyncApp,
 7013) -> Result<bool> {
 7014    let (should_prompt, open_room) = active_call.update(cx, |active_call, cx| {
 7015        let Some(room) = active_call.room().map(|room| room.read(cx)) else {
 7016            return (false, None);
 7017        };
 7018
 7019        let already_in_channel = room.channel_id() == Some(channel_id);
 7020        let should_prompt = room.is_sharing_project()
 7021            && !room.remote_participants().is_empty()
 7022            && !already_in_channel;
 7023        let open_room = if already_in_channel {
 7024            active_call.room().cloned()
 7025        } else {
 7026            None
 7027        };
 7028        (should_prompt, open_room)
 7029    })?;
 7030
 7031    if let Some(room) = open_room {
 7032        let task = room.update(cx, |room, cx| {
 7033            if let Some((project, host)) = room.most_active_project(cx) {
 7034                return Some(join_in_room_project(project, host, app_state.clone(), cx));
 7035            }
 7036
 7037            None
 7038        })?;
 7039        if let Some(task) = task {
 7040            task.await?;
 7041        }
 7042        return anyhow::Ok(true);
 7043    }
 7044
 7045    if should_prompt {
 7046        if let Some(workspace) = requesting_window {
 7047            let answer = workspace
 7048                .update(cx, |_, window, cx| {
 7049                    window.prompt(
 7050                        PromptLevel::Warning,
 7051                        "Do you want to switch channels?",
 7052                        Some("Leaving this call will unshare your current project."),
 7053                        &["Yes, Join Channel", "Cancel"],
 7054                        cx,
 7055                    )
 7056                })?
 7057                .await;
 7058
 7059            if answer == Ok(1) {
 7060                return Ok(false);
 7061            }
 7062        } else {
 7063            return Ok(false); // unreachable!() hopefully
 7064        }
 7065    }
 7066
 7067    let client = cx.update(|cx| active_call.read(cx).client())?;
 7068
 7069    let mut client_status = client.status();
 7070
 7071    // this loop will terminate within client::CONNECTION_TIMEOUT seconds.
 7072    'outer: loop {
 7073        let Some(status) = client_status.recv().await else {
 7074            anyhow::bail!("error connecting");
 7075        };
 7076
 7077        match status {
 7078            Status::Connecting
 7079            | Status::Authenticating
 7080            | Status::Authenticated
 7081            | Status::Reconnecting
 7082            | Status::Reauthenticating
 7083            | Status::Reauthenticated => continue,
 7084            Status::Connected { .. } => break 'outer,
 7085            Status::SignedOut | Status::AuthenticationError => {
 7086                return Err(ErrorCode::SignedOut.into());
 7087            }
 7088            Status::UpgradeRequired => return Err(ErrorCode::UpgradeRequired.into()),
 7089            Status::ConnectionError | Status::ConnectionLost | Status::ReconnectionError { .. } => {
 7090                return Err(ErrorCode::Disconnected.into());
 7091            }
 7092        }
 7093    }
 7094
 7095    let room = active_call
 7096        .update(cx, |active_call, cx| {
 7097            active_call.join_channel(channel_id, cx)
 7098        })?
 7099        .await?;
 7100
 7101    let Some(room) = room else {
 7102        return anyhow::Ok(true);
 7103    };
 7104
 7105    room.update(cx, |room, _| room.room_update_completed())?
 7106        .await;
 7107
 7108    let task = room.update(cx, |room, cx| {
 7109        if let Some((project, host)) = room.most_active_project(cx) {
 7110            return Some(join_in_room_project(project, host, app_state.clone(), cx));
 7111        }
 7112
 7113        // If you are the first to join a channel, see if you should share your project.
 7114        if room.remote_participants().is_empty()
 7115            && !room.local_participant_is_guest()
 7116            && let Some(workspace) = requesting_window
 7117        {
 7118            let project = workspace.update(cx, |workspace, _, cx| {
 7119                let project = workspace.project.read(cx);
 7120
 7121                if !CallSettings::get_global(cx).share_on_join {
 7122                    return None;
 7123                }
 7124
 7125                if (project.is_local() || project.is_via_remote_server())
 7126                    && project.visible_worktrees(cx).any(|tree| {
 7127                        tree.read(cx)
 7128                            .root_entry()
 7129                            .is_some_and(|entry| entry.is_dir())
 7130                    })
 7131                {
 7132                    Some(workspace.project.clone())
 7133                } else {
 7134                    None
 7135                }
 7136            });
 7137            if let Ok(Some(project)) = project {
 7138                return Some(cx.spawn(async move |room, cx| {
 7139                    room.update(cx, |room, cx| room.share_project(project, cx))?
 7140                        .await?;
 7141                    Ok(())
 7142                }));
 7143            }
 7144        }
 7145
 7146        None
 7147    })?;
 7148    if let Some(task) = task {
 7149        task.await?;
 7150        return anyhow::Ok(true);
 7151    }
 7152    anyhow::Ok(false)
 7153}
 7154
 7155pub fn join_channel(
 7156    channel_id: ChannelId,
 7157    app_state: Arc<AppState>,
 7158    requesting_window: Option<WindowHandle<Workspace>>,
 7159    cx: &mut App,
 7160) -> Task<Result<()>> {
 7161    let active_call = ActiveCall::global(cx);
 7162    cx.spawn(async move |cx| {
 7163        let result = join_channel_internal(
 7164            channel_id,
 7165            &app_state,
 7166            requesting_window,
 7167            &active_call,
 7168             cx,
 7169        )
 7170            .await;
 7171
 7172        // join channel succeeded, and opened a window
 7173        if matches!(result, Ok(true)) {
 7174            return anyhow::Ok(());
 7175        }
 7176
 7177        // find an existing workspace to focus and show call controls
 7178        let mut active_window =
 7179            requesting_window.or_else(|| activate_any_workspace_window( cx));
 7180        if active_window.is_none() {
 7181            // no open workspaces, make one to show the error in (blergh)
 7182            let (window_handle, _) = cx
 7183                .update(|cx| {
 7184                    Workspace::new_local(vec![], app_state.clone(), requesting_window, None, cx)
 7185                })?
 7186                .await?;
 7187
 7188            if result.is_ok() {
 7189                cx.update(|cx| {
 7190                    cx.dispatch_action(&OpenChannelNotes);
 7191                }).log_err();
 7192            }
 7193
 7194            active_window = Some(window_handle);
 7195        }
 7196
 7197        if let Err(err) = result {
 7198            log::error!("failed to join channel: {}", err);
 7199            if let Some(active_window) = active_window {
 7200                active_window
 7201                    .update(cx, |_, window, cx| {
 7202                        let detail: SharedString = match err.error_code() {
 7203                            ErrorCode::SignedOut => {
 7204                                "Please sign in to continue.".into()
 7205                            }
 7206                            ErrorCode::UpgradeRequired => {
 7207                                "Your are running an unsupported version of Zed. Please update to continue.".into()
 7208                            }
 7209                            ErrorCode::NoSuchChannel => {
 7210                                "No matching channel was found. Please check the link and try again.".into()
 7211                            }
 7212                            ErrorCode::Forbidden => {
 7213                                "This channel is private, and you do not have access. Please ask someone to add you and try again.".into()
 7214                            }
 7215                            ErrorCode::Disconnected => "Please check your internet connection and try again.".into(),
 7216                            _ => format!("{}\n\nPlease try again.", err).into(),
 7217                        };
 7218                        window.prompt(
 7219                            PromptLevel::Critical,
 7220                            "Failed to join channel",
 7221                            Some(&detail),
 7222                            &["Ok"],
 7223                        cx)
 7224                    })?
 7225                    .await
 7226                    .ok();
 7227            }
 7228        }
 7229
 7230        // return ok, we showed the error to the user.
 7231        anyhow::Ok(())
 7232    })
 7233}
 7234
 7235pub async fn get_any_active_workspace(
 7236    app_state: Arc<AppState>,
 7237    mut cx: AsyncApp,
 7238) -> anyhow::Result<WindowHandle<Workspace>> {
 7239    // find an existing workspace to focus and show call controls
 7240    let active_window = activate_any_workspace_window(&mut cx);
 7241    if active_window.is_none() {
 7242        cx.update(|cx| Workspace::new_local(vec![], app_state.clone(), None, None, cx))?
 7243            .await?;
 7244    }
 7245    activate_any_workspace_window(&mut cx).context("could not open zed")
 7246}
 7247
 7248fn activate_any_workspace_window(cx: &mut AsyncApp) -> Option<WindowHandle<Workspace>> {
 7249    cx.update(|cx| {
 7250        if let Some(workspace_window) = cx
 7251            .active_window()
 7252            .and_then(|window| window.downcast::<Workspace>())
 7253        {
 7254            return Some(workspace_window);
 7255        }
 7256
 7257        for window in cx.windows() {
 7258            if let Some(workspace_window) = window.downcast::<Workspace>() {
 7259                workspace_window
 7260                    .update(cx, |_, window, _| window.activate_window())
 7261                    .ok();
 7262                return Some(workspace_window);
 7263            }
 7264        }
 7265        None
 7266    })
 7267    .ok()
 7268    .flatten()
 7269}
 7270
 7271pub fn local_workspace_windows(cx: &App) -> Vec<WindowHandle<Workspace>> {
 7272    cx.windows()
 7273        .into_iter()
 7274        .filter_map(|window| window.downcast::<Workspace>())
 7275        .filter(|workspace| {
 7276            workspace
 7277                .read(cx)
 7278                .is_ok_and(|workspace| workspace.project.read(cx).is_local())
 7279        })
 7280        .collect()
 7281}
 7282
 7283#[derive(Default)]
 7284pub struct OpenOptions {
 7285    pub visible: Option<OpenVisible>,
 7286    pub focus: Option<bool>,
 7287    pub open_new_workspace: Option<bool>,
 7288    pub replace_window: Option<WindowHandle<Workspace>>,
 7289    pub env: Option<HashMap<String, String>>,
 7290}
 7291
 7292#[allow(clippy::type_complexity)]
 7293pub fn open_paths(
 7294    abs_paths: &[PathBuf],
 7295    app_state: Arc<AppState>,
 7296    open_options: OpenOptions,
 7297    cx: &mut App,
 7298) -> Task<
 7299    anyhow::Result<(
 7300        WindowHandle<Workspace>,
 7301        Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 7302    )>,
 7303> {
 7304    let abs_paths = abs_paths.to_vec();
 7305    let mut existing = None;
 7306    let mut best_match = None;
 7307    let mut open_visible = OpenVisible::All;
 7308
 7309    cx.spawn(async move |cx| {
 7310        if open_options.open_new_workspace != Some(true) {
 7311            let all_paths = abs_paths.iter().map(|path| app_state.fs.metadata(path));
 7312            let all_metadatas = futures::future::join_all(all_paths)
 7313                .await
 7314                .into_iter()
 7315                .filter_map(|result| result.ok().flatten())
 7316                .collect::<Vec<_>>();
 7317
 7318            cx.update(|cx| {
 7319                for window in local_workspace_windows(cx) {
 7320                    if let Ok(workspace) = window.read(cx) {
 7321                        let m = workspace.project.read(cx).visibility_for_paths(
 7322                            &abs_paths,
 7323                            &all_metadatas,
 7324                            open_options.open_new_workspace == None,
 7325                            cx,
 7326                        );
 7327                        if m > best_match {
 7328                            existing = Some(window);
 7329                            best_match = m;
 7330                        } else if best_match.is_none()
 7331                            && open_options.open_new_workspace == Some(false)
 7332                        {
 7333                            existing = Some(window)
 7334                        }
 7335                    }
 7336                }
 7337            })?;
 7338
 7339            if open_options.open_new_workspace.is_none()
 7340                && existing.is_none()
 7341                && all_metadatas.iter().all(|file| !file.is_dir)
 7342            {
 7343                cx.update(|cx| {
 7344                    if let Some(window) = cx
 7345                        .active_window()
 7346                        .and_then(|window| window.downcast::<Workspace>())
 7347                        && let Ok(workspace) = window.read(cx)
 7348                    {
 7349                        let project = workspace.project().read(cx);
 7350                        if project.is_local() && !project.is_via_collab() {
 7351                            existing = Some(window);
 7352                            open_visible = OpenVisible::None;
 7353                            return;
 7354                        }
 7355                    }
 7356                    for window in local_workspace_windows(cx) {
 7357                        if let Ok(workspace) = window.read(cx) {
 7358                            let project = workspace.project().read(cx);
 7359                            if project.is_via_collab() {
 7360                                continue;
 7361                            }
 7362                            existing = Some(window);
 7363                            open_visible = OpenVisible::None;
 7364                            break;
 7365                        }
 7366                    }
 7367                })?;
 7368            }
 7369        }
 7370
 7371        if let Some(existing) = existing {
 7372            let open_task = existing
 7373                .update(cx, |workspace, window, cx| {
 7374                    window.activate_window();
 7375                    workspace.open_paths(
 7376                        abs_paths,
 7377                        OpenOptions {
 7378                            visible: Some(open_visible),
 7379                            ..Default::default()
 7380                        },
 7381                        None,
 7382                        window,
 7383                        cx,
 7384                    )
 7385                })?
 7386                .await;
 7387
 7388            _ = existing.update(cx, |workspace, _, cx| {
 7389                for item in open_task.iter().flatten() {
 7390                    if let Err(e) = item {
 7391                        workspace.show_error(&e, cx);
 7392                    }
 7393                }
 7394            });
 7395
 7396            Ok((existing, open_task))
 7397        } else {
 7398            cx.update(move |cx| {
 7399                Workspace::new_local(
 7400                    abs_paths,
 7401                    app_state.clone(),
 7402                    open_options.replace_window,
 7403                    open_options.env,
 7404                    cx,
 7405                )
 7406            })?
 7407            .await
 7408        }
 7409    })
 7410}
 7411
 7412pub fn open_new(
 7413    open_options: OpenOptions,
 7414    app_state: Arc<AppState>,
 7415    cx: &mut App,
 7416    init: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + 'static + Send,
 7417) -> Task<anyhow::Result<()>> {
 7418    let task = Workspace::new_local(Vec::new(), app_state, None, open_options.env, cx);
 7419    cx.spawn(async move |cx| {
 7420        let (workspace, opened_paths) = task.await?;
 7421        workspace.update(cx, |workspace, window, cx| {
 7422            if opened_paths.is_empty() {
 7423                init(workspace, window, cx)
 7424            }
 7425        })?;
 7426        Ok(())
 7427    })
 7428}
 7429
 7430pub fn create_and_open_local_file(
 7431    path: &'static Path,
 7432    window: &mut Window,
 7433    cx: &mut Context<Workspace>,
 7434    default_content: impl 'static + Send + FnOnce() -> Rope,
 7435) -> Task<Result<Box<dyn ItemHandle>>> {
 7436    cx.spawn_in(window, async move |workspace, cx| {
 7437        let fs = workspace.read_with(cx, |workspace, _| workspace.app_state().fs.clone())?;
 7438        if !fs.is_file(path).await {
 7439            fs.create_file(path, Default::default()).await?;
 7440            fs.save(path, &default_content(), Default::default())
 7441                .await?;
 7442        }
 7443
 7444        let mut items = workspace
 7445            .update_in(cx, |workspace, window, cx| {
 7446                workspace.with_local_workspace(window, cx, |workspace, window, cx| {
 7447                    workspace.open_paths(
 7448                        vec![path.to_path_buf()],
 7449                        OpenOptions {
 7450                            visible: Some(OpenVisible::None),
 7451                            ..Default::default()
 7452                        },
 7453                        None,
 7454                        window,
 7455                        cx,
 7456                    )
 7457                })
 7458            })?
 7459            .await?
 7460            .await;
 7461
 7462        let item = items.pop().flatten();
 7463        item.with_context(|| format!("path {path:?} is not a file"))?
 7464    })
 7465}
 7466
 7467pub fn open_remote_project_with_new_connection(
 7468    window: WindowHandle<Workspace>,
 7469    remote_connection: Arc<dyn RemoteConnection>,
 7470    cancel_rx: oneshot::Receiver<()>,
 7471    delegate: Arc<dyn RemoteClientDelegate>,
 7472    app_state: Arc<AppState>,
 7473    paths: Vec<PathBuf>,
 7474    cx: &mut App,
 7475) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 7476    cx.spawn(async move |cx| {
 7477        let (workspace_id, serialized_workspace) =
 7478            serialize_remote_project(remote_connection.connection_options(), paths.clone(), cx)
 7479                .await?;
 7480
 7481        let session = match cx
 7482            .update(|cx| {
 7483                remote::RemoteClient::new(
 7484                    ConnectionIdentifier::Workspace(workspace_id.0),
 7485                    remote_connection,
 7486                    cancel_rx,
 7487                    delegate,
 7488                    cx,
 7489                )
 7490            })?
 7491            .await?
 7492        {
 7493            Some(result) => result,
 7494            None => return Ok(Vec::new()),
 7495        };
 7496
 7497        let project = cx.update(|cx| {
 7498            project::Project::remote(
 7499                session,
 7500                app_state.client.clone(),
 7501                app_state.node_runtime.clone(),
 7502                app_state.user_store.clone(),
 7503                app_state.languages.clone(),
 7504                app_state.fs.clone(),
 7505                cx,
 7506            )
 7507        })?;
 7508
 7509        open_remote_project_inner(
 7510            project,
 7511            paths,
 7512            workspace_id,
 7513            serialized_workspace,
 7514            app_state,
 7515            window,
 7516            cx,
 7517        )
 7518        .await
 7519    })
 7520}
 7521
 7522pub fn open_remote_project_with_existing_connection(
 7523    connection_options: RemoteConnectionOptions,
 7524    project: Entity<Project>,
 7525    paths: Vec<PathBuf>,
 7526    app_state: Arc<AppState>,
 7527    window: WindowHandle<Workspace>,
 7528    cx: &mut AsyncApp,
 7529) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 7530    cx.spawn(async move |cx| {
 7531        let (workspace_id, serialized_workspace) =
 7532            serialize_remote_project(connection_options.clone(), paths.clone(), cx).await?;
 7533
 7534        open_remote_project_inner(
 7535            project,
 7536            paths,
 7537            workspace_id,
 7538            serialized_workspace,
 7539            app_state,
 7540            window,
 7541            cx,
 7542        )
 7543        .await
 7544    })
 7545}
 7546
 7547async fn open_remote_project_inner(
 7548    project: Entity<Project>,
 7549    paths: Vec<PathBuf>,
 7550    workspace_id: WorkspaceId,
 7551    serialized_workspace: Option<SerializedWorkspace>,
 7552    app_state: Arc<AppState>,
 7553    window: WindowHandle<Workspace>,
 7554    cx: &mut AsyncApp,
 7555) -> Result<Vec<Option<Box<dyn ItemHandle>>>> {
 7556    let toolchains = DB.toolchains(workspace_id).await?;
 7557    for (toolchain, worktree_id, path) in toolchains {
 7558        project
 7559            .update(cx, |this, cx| {
 7560                this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 7561            })?
 7562            .await;
 7563    }
 7564    let mut project_paths_to_open = vec![];
 7565    let mut project_path_errors = vec![];
 7566
 7567    for path in paths {
 7568        let result = cx
 7569            .update(|cx| Workspace::project_path_for_path(project.clone(), &path, true, cx))?
 7570            .await;
 7571        match result {
 7572            Ok((_, project_path)) => {
 7573                project_paths_to_open.push((path.clone(), Some(project_path)));
 7574            }
 7575            Err(error) => {
 7576                project_path_errors.push(error);
 7577            }
 7578        };
 7579    }
 7580
 7581    if project_paths_to_open.is_empty() {
 7582        return Err(project_path_errors.pop().context("no paths given")?);
 7583    }
 7584
 7585    if let Some(detach_session_task) = window
 7586        .update(cx, |_workspace, window, cx| {
 7587            cx.spawn_in(window, async move |this, cx| {
 7588                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))
 7589            })
 7590        })
 7591        .ok()
 7592    {
 7593        detach_session_task.await.ok();
 7594    }
 7595
 7596    cx.update_window(window.into(), |_, window, cx| {
 7597        window.replace_root(cx, |window, cx| {
 7598            telemetry::event!("SSH Project Opened");
 7599
 7600            let mut workspace =
 7601                Workspace::new(Some(workspace_id), project, app_state.clone(), window, cx);
 7602            workspace.update_history(cx);
 7603
 7604            if let Some(ref serialized) = serialized_workspace {
 7605                workspace.centered_layout = serialized.centered_layout;
 7606            }
 7607
 7608            workspace
 7609        });
 7610    })?;
 7611
 7612    let items = window
 7613        .update(cx, |_, window, cx| {
 7614            window.activate_window();
 7615            open_items(serialized_workspace, project_paths_to_open, window, cx)
 7616        })?
 7617        .await?;
 7618
 7619    window.update(cx, |workspace, _, cx| {
 7620        for error in project_path_errors {
 7621            if error.error_code() == proto::ErrorCode::DevServerProjectPathDoesNotExist {
 7622                if let Some(path) = error.error_tag("path") {
 7623                    workspace.show_error(&anyhow!("'{path}' does not exist"), cx)
 7624                }
 7625            } else {
 7626                workspace.show_error(&error, cx)
 7627            }
 7628        }
 7629    })?;
 7630
 7631    Ok(items.into_iter().map(|item| item?.ok()).collect())
 7632}
 7633
 7634fn serialize_remote_project(
 7635    connection_options: RemoteConnectionOptions,
 7636    paths: Vec<PathBuf>,
 7637    cx: &AsyncApp,
 7638) -> Task<Result<(WorkspaceId, Option<SerializedWorkspace>)>> {
 7639    cx.background_spawn(async move {
 7640        let remote_connection_id = persistence::DB
 7641            .get_or_create_remote_connection(connection_options)
 7642            .await?;
 7643
 7644        let serialized_workspace =
 7645            persistence::DB.remote_workspace_for_roots(&paths, remote_connection_id);
 7646
 7647        let workspace_id = if let Some(workspace_id) =
 7648            serialized_workspace.as_ref().map(|workspace| workspace.id)
 7649        {
 7650            workspace_id
 7651        } else {
 7652            persistence::DB.next_id().await?
 7653        };
 7654
 7655        Ok((workspace_id, serialized_workspace))
 7656    })
 7657}
 7658
 7659pub fn join_in_room_project(
 7660    project_id: u64,
 7661    follow_user_id: u64,
 7662    app_state: Arc<AppState>,
 7663    cx: &mut App,
 7664) -> Task<Result<()>> {
 7665    let windows = cx.windows();
 7666    cx.spawn(async move |cx| {
 7667        let existing_workspace = windows.into_iter().find_map(|window_handle| {
 7668            window_handle
 7669                .downcast::<Workspace>()
 7670                .and_then(|window_handle| {
 7671                    window_handle
 7672                        .update(cx, |workspace, _window, cx| {
 7673                            if workspace.project().read(cx).remote_id() == Some(project_id) {
 7674                                Some(window_handle)
 7675                            } else {
 7676                                None
 7677                            }
 7678                        })
 7679                        .unwrap_or(None)
 7680                })
 7681        });
 7682
 7683        let workspace = if let Some(existing_workspace) = existing_workspace {
 7684            existing_workspace
 7685        } else {
 7686            let active_call = cx.update(|cx| ActiveCall::global(cx))?;
 7687            let room = active_call
 7688                .read_with(cx, |call, _| call.room().cloned())?
 7689                .context("not in a call")?;
 7690            let project = room
 7691                .update(cx, |room, cx| {
 7692                    room.join_project(
 7693                        project_id,
 7694                        app_state.languages.clone(),
 7695                        app_state.fs.clone(),
 7696                        cx,
 7697                    )
 7698                })?
 7699                .await?;
 7700
 7701            let window_bounds_override = window_bounds_env_override();
 7702            cx.update(|cx| {
 7703                let mut options = (app_state.build_window_options)(None, cx);
 7704                options.window_bounds = window_bounds_override.map(WindowBounds::Windowed);
 7705                cx.open_window(options, |window, cx| {
 7706                    cx.new(|cx| {
 7707                        Workspace::new(Default::default(), project, app_state.clone(), window, cx)
 7708                    })
 7709                })
 7710            })??
 7711        };
 7712
 7713        workspace.update(cx, |workspace, window, cx| {
 7714            cx.activate(true);
 7715            window.activate_window();
 7716
 7717            if let Some(room) = ActiveCall::global(cx).read(cx).room().cloned() {
 7718                let follow_peer_id = room
 7719                    .read(cx)
 7720                    .remote_participants()
 7721                    .iter()
 7722                    .find(|(_, participant)| participant.user.id == follow_user_id)
 7723                    .map(|(_, p)| p.peer_id)
 7724                    .or_else(|| {
 7725                        // If we couldn't follow the given user, follow the host instead.
 7726                        let collaborator = workspace
 7727                            .project()
 7728                            .read(cx)
 7729                            .collaborators()
 7730                            .values()
 7731                            .find(|collaborator| collaborator.is_host)?;
 7732                        Some(collaborator.peer_id)
 7733                    });
 7734
 7735                if let Some(follow_peer_id) = follow_peer_id {
 7736                    workspace.follow(follow_peer_id, window, cx);
 7737                }
 7738            }
 7739        })?;
 7740
 7741        anyhow::Ok(())
 7742    })
 7743}
 7744
 7745pub fn reload(cx: &mut App) {
 7746    let should_confirm = WorkspaceSettings::get_global(cx).confirm_quit;
 7747    let mut workspace_windows = cx
 7748        .windows()
 7749        .into_iter()
 7750        .filter_map(|window| window.downcast::<Workspace>())
 7751        .collect::<Vec<_>>();
 7752
 7753    // If multiple windows have unsaved changes, and need a save prompt,
 7754    // prompt in the active window before switching to a different window.
 7755    workspace_windows.sort_by_key(|window| window.is_active(cx) == Some(false));
 7756
 7757    let mut prompt = None;
 7758    if let (true, Some(window)) = (should_confirm, workspace_windows.first()) {
 7759        prompt = window
 7760            .update(cx, |_, window, cx| {
 7761                window.prompt(
 7762                    PromptLevel::Info,
 7763                    "Are you sure you want to restart?",
 7764                    None,
 7765                    &["Restart", "Cancel"],
 7766                    cx,
 7767                )
 7768            })
 7769            .ok();
 7770    }
 7771
 7772    cx.spawn(async move |cx| {
 7773        if let Some(prompt) = prompt {
 7774            let answer = prompt.await?;
 7775            if answer != 0 {
 7776                return Ok(());
 7777            }
 7778        }
 7779
 7780        // If the user cancels any save prompt, then keep the app open.
 7781        for window in workspace_windows {
 7782            if let Ok(should_close) = window.update(cx, |workspace, window, cx| {
 7783                workspace.prepare_to_close(CloseIntent::Quit, window, cx)
 7784            }) && !should_close.await?
 7785            {
 7786                return Ok(());
 7787            }
 7788        }
 7789        cx.update(|cx| cx.restart())
 7790    })
 7791    .detach_and_log_err(cx);
 7792}
 7793
 7794fn parse_pixel_position_env_var(value: &str) -> Option<Point<Pixels>> {
 7795    let mut parts = value.split(',');
 7796    let x: usize = parts.next()?.parse().ok()?;
 7797    let y: usize = parts.next()?.parse().ok()?;
 7798    Some(point(px(x as f32), px(y as f32)))
 7799}
 7800
 7801fn parse_pixel_size_env_var(value: &str) -> Option<Size<Pixels>> {
 7802    let mut parts = value.split(',');
 7803    let width: usize = parts.next()?.parse().ok()?;
 7804    let height: usize = parts.next()?.parse().ok()?;
 7805    Some(size(px(width as f32), px(height as f32)))
 7806}
 7807
 7808/// Add client-side decorations (rounded corners, shadows, resize handling) when appropriate.
 7809pub fn client_side_decorations(
 7810    element: impl IntoElement,
 7811    window: &mut Window,
 7812    cx: &mut App,
 7813) -> Stateful<Div> {
 7814    const BORDER_SIZE: Pixels = px(1.0);
 7815    let decorations = window.window_decorations();
 7816
 7817    match decorations {
 7818        Decorations::Client { .. } => window.set_client_inset(theme::CLIENT_SIDE_DECORATION_SHADOW),
 7819        Decorations::Server => window.set_client_inset(px(0.0)),
 7820    }
 7821
 7822    struct GlobalResizeEdge(ResizeEdge);
 7823    impl Global for GlobalResizeEdge {}
 7824
 7825    div()
 7826        .id("window-backdrop")
 7827        .bg(transparent_black())
 7828        .map(|div| match decorations {
 7829            Decorations::Server => div,
 7830            Decorations::Client { tiling, .. } => div
 7831                .when(!(tiling.top || tiling.right), |div| {
 7832                    div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7833                })
 7834                .when(!(tiling.top || tiling.left), |div| {
 7835                    div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7836                })
 7837                .when(!(tiling.bottom || tiling.right), |div| {
 7838                    div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7839                })
 7840                .when(!(tiling.bottom || tiling.left), |div| {
 7841                    div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7842                })
 7843                .when(!tiling.top, |div| {
 7844                    div.pt(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7845                })
 7846                .when(!tiling.bottom, |div| {
 7847                    div.pb(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7848                })
 7849                .when(!tiling.left, |div| {
 7850                    div.pl(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7851                })
 7852                .when(!tiling.right, |div| {
 7853                    div.pr(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7854                })
 7855                .on_mouse_move(move |e, window, cx| {
 7856                    let size = window.window_bounds().get_bounds().size;
 7857                    let pos = e.position;
 7858
 7859                    let new_edge =
 7860                        resize_edge(pos, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling);
 7861
 7862                    let edge = cx.try_global::<GlobalResizeEdge>();
 7863                    if new_edge != edge.map(|edge| edge.0) {
 7864                        window
 7865                            .window_handle()
 7866                            .update(cx, |workspace, _, cx| {
 7867                                cx.notify(workspace.entity_id());
 7868                            })
 7869                            .ok();
 7870                    }
 7871                })
 7872                .on_mouse_down(MouseButton::Left, move |e, window, _| {
 7873                    let size = window.window_bounds().get_bounds().size;
 7874                    let pos = e.position;
 7875
 7876                    let edge = match resize_edge(
 7877                        pos,
 7878                        theme::CLIENT_SIDE_DECORATION_SHADOW,
 7879                        size,
 7880                        tiling,
 7881                    ) {
 7882                        Some(value) => value,
 7883                        None => return,
 7884                    };
 7885
 7886                    window.start_window_resize(edge);
 7887                }),
 7888        })
 7889        .size_full()
 7890        .child(
 7891            div()
 7892                .cursor(CursorStyle::Arrow)
 7893                .map(|div| match decorations {
 7894                    Decorations::Server => div,
 7895                    Decorations::Client { tiling } => div
 7896                        .border_color(cx.theme().colors().border)
 7897                        .when(!(tiling.top || tiling.right), |div| {
 7898                            div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7899                        })
 7900                        .when(!(tiling.top || tiling.left), |div| {
 7901                            div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7902                        })
 7903                        .when(!(tiling.bottom || tiling.right), |div| {
 7904                            div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7905                        })
 7906                        .when(!(tiling.bottom || tiling.left), |div| {
 7907                            div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7908                        })
 7909                        .when(!tiling.top, |div| div.border_t(BORDER_SIZE))
 7910                        .when(!tiling.bottom, |div| div.border_b(BORDER_SIZE))
 7911                        .when(!tiling.left, |div| div.border_l(BORDER_SIZE))
 7912                        .when(!tiling.right, |div| div.border_r(BORDER_SIZE))
 7913                        .when(!tiling.is_tiled(), |div| {
 7914                            div.shadow(vec![gpui::BoxShadow {
 7915                                color: Hsla {
 7916                                    h: 0.,
 7917                                    s: 0.,
 7918                                    l: 0.,
 7919                                    a: 0.4,
 7920                                },
 7921                                blur_radius: theme::CLIENT_SIDE_DECORATION_SHADOW / 2.,
 7922                                spread_radius: px(0.),
 7923                                offset: point(px(0.0), px(0.0)),
 7924                            }])
 7925                        }),
 7926                })
 7927                .on_mouse_move(|_e, _, cx| {
 7928                    cx.stop_propagation();
 7929                })
 7930                .size_full()
 7931                .child(element),
 7932        )
 7933        .map(|div| match decorations {
 7934            Decorations::Server => div,
 7935            Decorations::Client { tiling, .. } => div.child(
 7936                canvas(
 7937                    |_bounds, window, _| {
 7938                        window.insert_hitbox(
 7939                            Bounds::new(
 7940                                point(px(0.0), px(0.0)),
 7941                                window.window_bounds().get_bounds().size,
 7942                            ),
 7943                            HitboxBehavior::Normal,
 7944                        )
 7945                    },
 7946                    move |_bounds, hitbox, window, cx| {
 7947                        let mouse = window.mouse_position();
 7948                        let size = window.window_bounds().get_bounds().size;
 7949                        let Some(edge) =
 7950                            resize_edge(mouse, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling)
 7951                        else {
 7952                            return;
 7953                        };
 7954                        cx.set_global(GlobalResizeEdge(edge));
 7955                        window.set_cursor_style(
 7956                            match edge {
 7957                                ResizeEdge::Top | ResizeEdge::Bottom => CursorStyle::ResizeUpDown,
 7958                                ResizeEdge::Left | ResizeEdge::Right => {
 7959                                    CursorStyle::ResizeLeftRight
 7960                                }
 7961                                ResizeEdge::TopLeft | ResizeEdge::BottomRight => {
 7962                                    CursorStyle::ResizeUpLeftDownRight
 7963                                }
 7964                                ResizeEdge::TopRight | ResizeEdge::BottomLeft => {
 7965                                    CursorStyle::ResizeUpRightDownLeft
 7966                                }
 7967                            },
 7968                            &hitbox,
 7969                        );
 7970                    },
 7971                )
 7972                .size_full()
 7973                .absolute(),
 7974            ),
 7975        })
 7976}
 7977
 7978fn resize_edge(
 7979    pos: Point<Pixels>,
 7980    shadow_size: Pixels,
 7981    window_size: Size<Pixels>,
 7982    tiling: Tiling,
 7983) -> Option<ResizeEdge> {
 7984    let bounds = Bounds::new(Point::default(), window_size).inset(shadow_size * 1.5);
 7985    if bounds.contains(&pos) {
 7986        return None;
 7987    }
 7988
 7989    let corner_size = size(shadow_size * 1.5, shadow_size * 1.5);
 7990    let top_left_bounds = Bounds::new(Point::new(px(0.), px(0.)), corner_size);
 7991    if !tiling.top && top_left_bounds.contains(&pos) {
 7992        return Some(ResizeEdge::TopLeft);
 7993    }
 7994
 7995    let top_right_bounds = Bounds::new(
 7996        Point::new(window_size.width - corner_size.width, px(0.)),
 7997        corner_size,
 7998    );
 7999    if !tiling.top && top_right_bounds.contains(&pos) {
 8000        return Some(ResizeEdge::TopRight);
 8001    }
 8002
 8003    let bottom_left_bounds = Bounds::new(
 8004        Point::new(px(0.), window_size.height - corner_size.height),
 8005        corner_size,
 8006    );
 8007    if !tiling.bottom && bottom_left_bounds.contains(&pos) {
 8008        return Some(ResizeEdge::BottomLeft);
 8009    }
 8010
 8011    let bottom_right_bounds = Bounds::new(
 8012        Point::new(
 8013            window_size.width - corner_size.width,
 8014            window_size.height - corner_size.height,
 8015        ),
 8016        corner_size,
 8017    );
 8018    if !tiling.bottom && bottom_right_bounds.contains(&pos) {
 8019        return Some(ResizeEdge::BottomRight);
 8020    }
 8021
 8022    if !tiling.top && pos.y < shadow_size {
 8023        Some(ResizeEdge::Top)
 8024    } else if !tiling.bottom && pos.y > window_size.height - shadow_size {
 8025        Some(ResizeEdge::Bottom)
 8026    } else if !tiling.left && pos.x < shadow_size {
 8027        Some(ResizeEdge::Left)
 8028    } else if !tiling.right && pos.x > window_size.width - shadow_size {
 8029        Some(ResizeEdge::Right)
 8030    } else {
 8031        None
 8032    }
 8033}
 8034
 8035fn join_pane_into_active(
 8036    active_pane: &Entity<Pane>,
 8037    pane: &Entity<Pane>,
 8038    window: &mut Window,
 8039    cx: &mut App,
 8040) {
 8041    if pane == active_pane {
 8042    } else if pane.read(cx).items_len() == 0 {
 8043        pane.update(cx, |_, cx| {
 8044            cx.emit(pane::Event::Remove {
 8045                focus_on_pane: None,
 8046            });
 8047        })
 8048    } else {
 8049        move_all_items(pane, active_pane, window, cx);
 8050    }
 8051}
 8052
 8053fn move_all_items(
 8054    from_pane: &Entity<Pane>,
 8055    to_pane: &Entity<Pane>,
 8056    window: &mut Window,
 8057    cx: &mut App,
 8058) {
 8059    let destination_is_different = from_pane != to_pane;
 8060    let mut moved_items = 0;
 8061    for (item_ix, item_handle) in from_pane
 8062        .read(cx)
 8063        .items()
 8064        .enumerate()
 8065        .map(|(ix, item)| (ix, item.clone()))
 8066        .collect::<Vec<_>>()
 8067    {
 8068        let ix = item_ix - moved_items;
 8069        if destination_is_different {
 8070            // Close item from previous pane
 8071            from_pane.update(cx, |source, cx| {
 8072                source.remove_item_and_focus_on_pane(ix, false, to_pane.clone(), window, cx);
 8073            });
 8074            moved_items += 1;
 8075        }
 8076
 8077        // This automatically removes duplicate items in the pane
 8078        to_pane.update(cx, |destination, cx| {
 8079            destination.add_item(item_handle, true, true, None, window, cx);
 8080            window.focus(&destination.focus_handle(cx))
 8081        });
 8082    }
 8083}
 8084
 8085pub fn move_item(
 8086    source: &Entity<Pane>,
 8087    destination: &Entity<Pane>,
 8088    item_id_to_move: EntityId,
 8089    destination_index: usize,
 8090    activate: bool,
 8091    window: &mut Window,
 8092    cx: &mut App,
 8093) {
 8094    let Some((item_ix, item_handle)) = source
 8095        .read(cx)
 8096        .items()
 8097        .enumerate()
 8098        .find(|(_, item_handle)| item_handle.item_id() == item_id_to_move)
 8099        .map(|(ix, item)| (ix, item.clone()))
 8100    else {
 8101        // Tab was closed during drag
 8102        return;
 8103    };
 8104
 8105    if source != destination {
 8106        // Close item from previous pane
 8107        source.update(cx, |source, cx| {
 8108            source.remove_item_and_focus_on_pane(item_ix, false, destination.clone(), window, cx);
 8109        });
 8110    }
 8111
 8112    // This automatically removes duplicate items in the pane
 8113    destination.update(cx, |destination, cx| {
 8114        destination.add_item_inner(
 8115            item_handle,
 8116            activate,
 8117            activate,
 8118            activate,
 8119            Some(destination_index),
 8120            window,
 8121            cx,
 8122        );
 8123        if activate {
 8124            window.focus(&destination.focus_handle(cx))
 8125        }
 8126    });
 8127}
 8128
 8129pub fn move_active_item(
 8130    source: &Entity<Pane>,
 8131    destination: &Entity<Pane>,
 8132    focus_destination: bool,
 8133    close_if_empty: bool,
 8134    window: &mut Window,
 8135    cx: &mut App,
 8136) {
 8137    if source == destination {
 8138        return;
 8139    }
 8140    let Some(active_item) = source.read(cx).active_item() else {
 8141        return;
 8142    };
 8143    source.update(cx, |source_pane, cx| {
 8144        let item_id = active_item.item_id();
 8145        source_pane.remove_item(item_id, false, close_if_empty, window, cx);
 8146        destination.update(cx, |target_pane, cx| {
 8147            target_pane.add_item(
 8148                active_item,
 8149                focus_destination,
 8150                focus_destination,
 8151                Some(target_pane.items_len()),
 8152                window,
 8153                cx,
 8154            );
 8155        });
 8156    });
 8157}
 8158
 8159pub fn clone_active_item(
 8160    workspace_id: Option<WorkspaceId>,
 8161    source: &Entity<Pane>,
 8162    destination: &Entity<Pane>,
 8163    focus_destination: bool,
 8164    window: &mut Window,
 8165    cx: &mut App,
 8166) {
 8167    if source == destination {
 8168        return;
 8169    }
 8170    let Some(active_item) = source.read(cx).active_item() else {
 8171        return;
 8172    };
 8173    destination.update(cx, |target_pane, cx| {
 8174        let Some(clone) = active_item.clone_on_split(workspace_id, window, cx) else {
 8175            return;
 8176        };
 8177        target_pane.add_item(
 8178            clone,
 8179            focus_destination,
 8180            focus_destination,
 8181            Some(target_pane.items_len()),
 8182            window,
 8183            cx,
 8184        );
 8185    });
 8186}
 8187
 8188#[derive(Debug)]
 8189pub struct WorkspacePosition {
 8190    pub window_bounds: Option<WindowBounds>,
 8191    pub display: Option<Uuid>,
 8192    pub centered_layout: bool,
 8193}
 8194
 8195pub fn remote_workspace_position_from_db(
 8196    connection_options: RemoteConnectionOptions,
 8197    paths_to_open: &[PathBuf],
 8198    cx: &App,
 8199) -> Task<Result<WorkspacePosition>> {
 8200    let paths = paths_to_open.to_vec();
 8201
 8202    cx.background_spawn(async move {
 8203        let remote_connection_id = persistence::DB
 8204            .get_or_create_remote_connection(connection_options)
 8205            .await
 8206            .context("fetching serialized ssh project")?;
 8207        let serialized_workspace =
 8208            persistence::DB.remote_workspace_for_roots(&paths, remote_connection_id);
 8209
 8210        let (window_bounds, display) = if let Some(bounds) = window_bounds_env_override() {
 8211            (Some(WindowBounds::Windowed(bounds)), None)
 8212        } else {
 8213            let restorable_bounds = serialized_workspace
 8214                .as_ref()
 8215                .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 8216                .or_else(|| {
 8217                    let (display, window_bounds) = DB.last_window().log_err()?;
 8218                    Some((display?, window_bounds?))
 8219                });
 8220
 8221            if let Some((serialized_display, serialized_status)) = restorable_bounds {
 8222                (Some(serialized_status.0), Some(serialized_display))
 8223            } else {
 8224                (None, None)
 8225            }
 8226        };
 8227
 8228        let centered_layout = serialized_workspace
 8229            .as_ref()
 8230            .map(|w| w.centered_layout)
 8231            .unwrap_or(false);
 8232
 8233        Ok(WorkspacePosition {
 8234            window_bounds,
 8235            display,
 8236            centered_layout,
 8237        })
 8238    })
 8239}
 8240
 8241pub fn with_active_or_new_workspace(
 8242    cx: &mut App,
 8243    f: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send + 'static,
 8244) {
 8245    match cx.active_window().and_then(|w| w.downcast::<Workspace>()) {
 8246        Some(workspace) => {
 8247            cx.defer(move |cx| {
 8248                workspace
 8249                    .update(cx, |workspace, window, cx| f(workspace, window, cx))
 8250                    .log_err();
 8251            });
 8252        }
 8253        None => {
 8254            let app_state = AppState::global(cx);
 8255            if let Some(app_state) = app_state.upgrade() {
 8256                open_new(
 8257                    OpenOptions::default(),
 8258                    app_state,
 8259                    cx,
 8260                    move |workspace, window, cx| f(workspace, window, cx),
 8261                )
 8262                .detach_and_log_err(cx);
 8263            }
 8264        }
 8265    }
 8266}
 8267
 8268#[cfg(test)]
 8269mod tests {
 8270    use std::{cell::RefCell, rc::Rc};
 8271
 8272    use super::*;
 8273    use crate::{
 8274        dock::{PanelEvent, test::TestPanel},
 8275        item::{
 8276            ItemBufferKind, ItemEvent,
 8277            test::{TestItem, TestProjectItem},
 8278        },
 8279    };
 8280    use fs::FakeFs;
 8281    use gpui::{
 8282        DismissEvent, Empty, EventEmitter, FocusHandle, Focusable, Render, TestAppContext,
 8283        UpdateGlobal, VisualTestContext, px,
 8284    };
 8285    use project::{Project, ProjectEntryId};
 8286    use serde_json::json;
 8287    use settings::SettingsStore;
 8288    use util::rel_path::rel_path;
 8289
 8290    #[gpui::test]
 8291    async fn test_tab_disambiguation(cx: &mut TestAppContext) {
 8292        init_test(cx);
 8293
 8294        let fs = FakeFs::new(cx.executor());
 8295        let project = Project::test(fs, [], cx).await;
 8296        let (workspace, cx) =
 8297            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8298
 8299        // Adding an item with no ambiguity renders the tab without detail.
 8300        let item1 = cx.new(|cx| {
 8301            let mut item = TestItem::new(cx);
 8302            item.tab_descriptions = Some(vec!["c", "b1/c", "a/b1/c"]);
 8303            item
 8304        });
 8305        workspace.update_in(cx, |workspace, window, cx| {
 8306            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8307        });
 8308        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(0)));
 8309
 8310        // Adding an item that creates ambiguity increases the level of detail on
 8311        // both tabs.
 8312        let item2 = cx.new_window_entity(|_window, cx| {
 8313            let mut item = TestItem::new(cx);
 8314            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8315            item
 8316        });
 8317        workspace.update_in(cx, |workspace, window, cx| {
 8318            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8319        });
 8320        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8321        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8322
 8323        // Adding an item that creates ambiguity increases the level of detail only
 8324        // on the ambiguous tabs. In this case, the ambiguity can't be resolved so
 8325        // we stop at the highest detail available.
 8326        let item3 = cx.new(|cx| {
 8327            let mut item = TestItem::new(cx);
 8328            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8329            item
 8330        });
 8331        workspace.update_in(cx, |workspace, window, cx| {
 8332            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8333        });
 8334        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8335        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8336        item3.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8337    }
 8338
 8339    #[gpui::test]
 8340    async fn test_tracking_active_path(cx: &mut TestAppContext) {
 8341        init_test(cx);
 8342
 8343        let fs = FakeFs::new(cx.executor());
 8344        fs.insert_tree(
 8345            "/root1",
 8346            json!({
 8347                "one.txt": "",
 8348                "two.txt": "",
 8349            }),
 8350        )
 8351        .await;
 8352        fs.insert_tree(
 8353            "/root2",
 8354            json!({
 8355                "three.txt": "",
 8356            }),
 8357        )
 8358        .await;
 8359
 8360        let project = Project::test(fs, ["root1".as_ref()], cx).await;
 8361        let (workspace, cx) =
 8362            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8363        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8364        let worktree_id = project.update(cx, |project, cx| {
 8365            project.worktrees(cx).next().unwrap().read(cx).id()
 8366        });
 8367
 8368        let item1 = cx.new(|cx| {
 8369            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
 8370        });
 8371        let item2 = cx.new(|cx| {
 8372            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "two.txt", cx)])
 8373        });
 8374
 8375        // Add an item to an empty pane
 8376        workspace.update_in(cx, |workspace, window, cx| {
 8377            workspace.add_item_to_active_pane(Box::new(item1), None, true, window, cx)
 8378        });
 8379        project.update(cx, |project, cx| {
 8380            assert_eq!(
 8381                project.active_entry(),
 8382                project
 8383                    .entry_for_path(&(worktree_id, rel_path("one.txt")).into(), cx)
 8384                    .map(|e| e.id)
 8385            );
 8386        });
 8387        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8388
 8389        // Add a second item to a non-empty pane
 8390        workspace.update_in(cx, |workspace, window, cx| {
 8391            workspace.add_item_to_active_pane(Box::new(item2), None, true, window, cx)
 8392        });
 8393        assert_eq!(cx.window_title().as_deref(), Some("root1 — two.txt"));
 8394        project.update(cx, |project, cx| {
 8395            assert_eq!(
 8396                project.active_entry(),
 8397                project
 8398                    .entry_for_path(&(worktree_id, rel_path("two.txt")).into(), cx)
 8399                    .map(|e| e.id)
 8400            );
 8401        });
 8402
 8403        // Close the active item
 8404        pane.update_in(cx, |pane, window, cx| {
 8405            pane.close_active_item(&Default::default(), window, cx)
 8406        })
 8407        .await
 8408        .unwrap();
 8409        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8410        project.update(cx, |project, cx| {
 8411            assert_eq!(
 8412                project.active_entry(),
 8413                project
 8414                    .entry_for_path(&(worktree_id, rel_path("one.txt")).into(), cx)
 8415                    .map(|e| e.id)
 8416            );
 8417        });
 8418
 8419        // Add a project folder
 8420        project
 8421            .update(cx, |project, cx| {
 8422                project.find_or_create_worktree("root2", true, cx)
 8423            })
 8424            .await
 8425            .unwrap();
 8426        assert_eq!(cx.window_title().as_deref(), Some("root1, root2 — one.txt"));
 8427
 8428        // Remove a project folder
 8429        project.update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
 8430        assert_eq!(cx.window_title().as_deref(), Some("root2 — one.txt"));
 8431    }
 8432
 8433    #[gpui::test]
 8434    async fn test_close_window(cx: &mut TestAppContext) {
 8435        init_test(cx);
 8436
 8437        let fs = FakeFs::new(cx.executor());
 8438        fs.insert_tree("/root", json!({ "one": "" })).await;
 8439
 8440        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8441        let (workspace, cx) =
 8442            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8443
 8444        // When there are no dirty items, there's nothing to do.
 8445        let item1 = cx.new(TestItem::new);
 8446        workspace.update_in(cx, |w, window, cx| {
 8447            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx)
 8448        });
 8449        let task = workspace.update_in(cx, |w, window, cx| {
 8450            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8451        });
 8452        assert!(task.await.unwrap());
 8453
 8454        // When there are dirty untitled items, prompt to save each one. If the user
 8455        // cancels any prompt, then abort.
 8456        let item2 = cx.new(|cx| TestItem::new(cx).with_dirty(true));
 8457        let item3 = cx.new(|cx| {
 8458            TestItem::new(cx)
 8459                .with_dirty(true)
 8460                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8461        });
 8462        workspace.update_in(cx, |w, window, cx| {
 8463            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8464            w.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8465        });
 8466        let task = workspace.update_in(cx, |w, window, cx| {
 8467            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8468        });
 8469        cx.executor().run_until_parked();
 8470        cx.simulate_prompt_answer("Cancel"); // cancel save all
 8471        cx.executor().run_until_parked();
 8472        assert!(!cx.has_pending_prompt());
 8473        assert!(!task.await.unwrap());
 8474    }
 8475
 8476    #[gpui::test]
 8477    async fn test_close_window_with_serializable_items(cx: &mut TestAppContext) {
 8478        init_test(cx);
 8479
 8480        // Register TestItem as a serializable item
 8481        cx.update(|cx| {
 8482            register_serializable_item::<TestItem>(cx);
 8483        });
 8484
 8485        let fs = FakeFs::new(cx.executor());
 8486        fs.insert_tree("/root", json!({ "one": "" })).await;
 8487
 8488        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8489        let (workspace, cx) =
 8490            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8491
 8492        // When there are dirty untitled items, but they can serialize, then there is no prompt.
 8493        let item1 = cx.new(|cx| {
 8494            TestItem::new(cx)
 8495                .with_dirty(true)
 8496                .with_serialize(|| Some(Task::ready(Ok(()))))
 8497        });
 8498        let item2 = cx.new(|cx| {
 8499            TestItem::new(cx)
 8500                .with_dirty(true)
 8501                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8502                .with_serialize(|| Some(Task::ready(Ok(()))))
 8503        });
 8504        workspace.update_in(cx, |w, window, cx| {
 8505            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8506            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8507        });
 8508        let task = workspace.update_in(cx, |w, window, cx| {
 8509            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8510        });
 8511        assert!(task.await.unwrap());
 8512    }
 8513
 8514    #[gpui::test]
 8515    async fn test_close_pane_items(cx: &mut TestAppContext) {
 8516        init_test(cx);
 8517
 8518        let fs = FakeFs::new(cx.executor());
 8519
 8520        let project = Project::test(fs, None, cx).await;
 8521        let (workspace, cx) =
 8522            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8523
 8524        let item1 = cx.new(|cx| {
 8525            TestItem::new(cx)
 8526                .with_dirty(true)
 8527                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 8528        });
 8529        let item2 = cx.new(|cx| {
 8530            TestItem::new(cx)
 8531                .with_dirty(true)
 8532                .with_conflict(true)
 8533                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 8534        });
 8535        let item3 = cx.new(|cx| {
 8536            TestItem::new(cx)
 8537                .with_dirty(true)
 8538                .with_conflict(true)
 8539                .with_project_items(&[dirty_project_item(3, "3.txt", cx)])
 8540        });
 8541        let item4 = cx.new(|cx| {
 8542            TestItem::new(cx).with_dirty(true).with_project_items(&[{
 8543                let project_item = TestProjectItem::new_untitled(cx);
 8544                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8545                project_item
 8546            }])
 8547        });
 8548        let pane = workspace.update_in(cx, |workspace, window, cx| {
 8549            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8550            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8551            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8552            workspace.add_item_to_active_pane(Box::new(item4.clone()), None, true, window, cx);
 8553            workspace.active_pane().clone()
 8554        });
 8555
 8556        let close_items = pane.update_in(cx, |pane, window, cx| {
 8557            pane.activate_item(1, true, true, window, cx);
 8558            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8559            let item1_id = item1.item_id();
 8560            let item3_id = item3.item_id();
 8561            let item4_id = item4.item_id();
 8562            pane.close_items(window, cx, SaveIntent::Close, move |id| {
 8563                [item1_id, item3_id, item4_id].contains(&id)
 8564            })
 8565        });
 8566        cx.executor().run_until_parked();
 8567
 8568        assert!(cx.has_pending_prompt());
 8569        cx.simulate_prompt_answer("Save all");
 8570
 8571        cx.executor().run_until_parked();
 8572
 8573        // Item 1 is saved. There's a prompt to save item 3.
 8574        pane.update(cx, |pane, cx| {
 8575            assert_eq!(item1.read(cx).save_count, 1);
 8576            assert_eq!(item1.read(cx).save_as_count, 0);
 8577            assert_eq!(item1.read(cx).reload_count, 0);
 8578            assert_eq!(pane.items_len(), 3);
 8579            assert_eq!(pane.active_item().unwrap().item_id(), item3.item_id());
 8580        });
 8581        assert!(cx.has_pending_prompt());
 8582
 8583        // Cancel saving item 3.
 8584        cx.simulate_prompt_answer("Discard");
 8585        cx.executor().run_until_parked();
 8586
 8587        // Item 3 is reloaded. There's a prompt to save item 4.
 8588        pane.update(cx, |pane, cx| {
 8589            assert_eq!(item3.read(cx).save_count, 0);
 8590            assert_eq!(item3.read(cx).save_as_count, 0);
 8591            assert_eq!(item3.read(cx).reload_count, 1);
 8592            assert_eq!(pane.items_len(), 2);
 8593            assert_eq!(pane.active_item().unwrap().item_id(), item4.item_id());
 8594        });
 8595
 8596        // There's a prompt for a path for item 4.
 8597        cx.simulate_new_path_selection(|_| Some(Default::default()));
 8598        close_items.await.unwrap();
 8599
 8600        // The requested items are closed.
 8601        pane.update(cx, |pane, cx| {
 8602            assert_eq!(item4.read(cx).save_count, 0);
 8603            assert_eq!(item4.read(cx).save_as_count, 1);
 8604            assert_eq!(item4.read(cx).reload_count, 0);
 8605            assert_eq!(pane.items_len(), 1);
 8606            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8607        });
 8608    }
 8609
 8610    #[gpui::test]
 8611    async fn test_prompting_to_save_only_on_last_item_for_entry(cx: &mut TestAppContext) {
 8612        init_test(cx);
 8613
 8614        let fs = FakeFs::new(cx.executor());
 8615        let project = Project::test(fs, [], cx).await;
 8616        let (workspace, cx) =
 8617            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8618
 8619        // Create several workspace items with single project entries, and two
 8620        // workspace items with multiple project entries.
 8621        let single_entry_items = (0..=4)
 8622            .map(|project_entry_id| {
 8623                cx.new(|cx| {
 8624                    TestItem::new(cx)
 8625                        .with_dirty(true)
 8626                        .with_project_items(&[dirty_project_item(
 8627                            project_entry_id,
 8628                            &format!("{project_entry_id}.txt"),
 8629                            cx,
 8630                        )])
 8631                })
 8632            })
 8633            .collect::<Vec<_>>();
 8634        let item_2_3 = cx.new(|cx| {
 8635            TestItem::new(cx)
 8636                .with_dirty(true)
 8637                .with_buffer_kind(ItemBufferKind::Multibuffer)
 8638                .with_project_items(&[
 8639                    single_entry_items[2].read(cx).project_items[0].clone(),
 8640                    single_entry_items[3].read(cx).project_items[0].clone(),
 8641                ])
 8642        });
 8643        let item_3_4 = cx.new(|cx| {
 8644            TestItem::new(cx)
 8645                .with_dirty(true)
 8646                .with_buffer_kind(ItemBufferKind::Multibuffer)
 8647                .with_project_items(&[
 8648                    single_entry_items[3].read(cx).project_items[0].clone(),
 8649                    single_entry_items[4].read(cx).project_items[0].clone(),
 8650                ])
 8651        });
 8652
 8653        // Create two panes that contain the following project entries:
 8654        //   left pane:
 8655        //     multi-entry items:   (2, 3)
 8656        //     single-entry items:  0, 2, 3, 4
 8657        //   right pane:
 8658        //     single-entry items:  4, 1
 8659        //     multi-entry items:   (3, 4)
 8660        let (left_pane, right_pane) = workspace.update_in(cx, |workspace, window, cx| {
 8661            let left_pane = workspace.active_pane().clone();
 8662            workspace.add_item_to_active_pane(Box::new(item_2_3.clone()), None, true, window, cx);
 8663            workspace.add_item_to_active_pane(
 8664                single_entry_items[0].boxed_clone(),
 8665                None,
 8666                true,
 8667                window,
 8668                cx,
 8669            );
 8670            workspace.add_item_to_active_pane(
 8671                single_entry_items[2].boxed_clone(),
 8672                None,
 8673                true,
 8674                window,
 8675                cx,
 8676            );
 8677            workspace.add_item_to_active_pane(
 8678                single_entry_items[3].boxed_clone(),
 8679                None,
 8680                true,
 8681                window,
 8682                cx,
 8683            );
 8684            workspace.add_item_to_active_pane(
 8685                single_entry_items[4].boxed_clone(),
 8686                None,
 8687                true,
 8688                window,
 8689                cx,
 8690            );
 8691
 8692            let right_pane = workspace
 8693                .split_and_clone(left_pane.clone(), SplitDirection::Right, window, cx)
 8694                .unwrap();
 8695
 8696            right_pane.update(cx, |pane, cx| {
 8697                pane.add_item(
 8698                    single_entry_items[1].boxed_clone(),
 8699                    true,
 8700                    true,
 8701                    None,
 8702                    window,
 8703                    cx,
 8704                );
 8705                pane.add_item(Box::new(item_3_4.clone()), true, true, None, window, cx);
 8706            });
 8707
 8708            (left_pane, right_pane)
 8709        });
 8710
 8711        cx.focus(&right_pane);
 8712
 8713        let mut close = right_pane.update_in(cx, |pane, window, cx| {
 8714            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8715                .unwrap()
 8716        });
 8717        cx.executor().run_until_parked();
 8718
 8719        let msg = cx.pending_prompt().unwrap().0;
 8720        assert!(msg.contains("1.txt"));
 8721        assert!(!msg.contains("2.txt"));
 8722        assert!(!msg.contains("3.txt"));
 8723        assert!(!msg.contains("4.txt"));
 8724
 8725        cx.simulate_prompt_answer("Cancel");
 8726        close.await;
 8727
 8728        left_pane
 8729            .update_in(cx, |left_pane, window, cx| {
 8730                left_pane.close_item_by_id(
 8731                    single_entry_items[3].entity_id(),
 8732                    SaveIntent::Skip,
 8733                    window,
 8734                    cx,
 8735                )
 8736            })
 8737            .await
 8738            .unwrap();
 8739
 8740        close = right_pane.update_in(cx, |pane, window, cx| {
 8741            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8742                .unwrap()
 8743        });
 8744        cx.executor().run_until_parked();
 8745
 8746        let details = cx.pending_prompt().unwrap().1;
 8747        assert!(details.contains("1.txt"));
 8748        assert!(!details.contains("2.txt"));
 8749        assert!(details.contains("3.txt"));
 8750        // ideally this assertion could be made, but today we can only
 8751        // save whole items not project items, so the orphaned item 3 causes
 8752        // 4 to be saved too.
 8753        // assert!(!details.contains("4.txt"));
 8754
 8755        cx.simulate_prompt_answer("Save all");
 8756
 8757        cx.executor().run_until_parked();
 8758        close.await;
 8759        right_pane.read_with(cx, |pane, _| {
 8760            assert_eq!(pane.items_len(), 0);
 8761        });
 8762    }
 8763
 8764    #[gpui::test]
 8765    async fn test_autosave(cx: &mut gpui::TestAppContext) {
 8766        init_test(cx);
 8767
 8768        let fs = FakeFs::new(cx.executor());
 8769        let project = Project::test(fs, [], cx).await;
 8770        let (workspace, cx) =
 8771            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8772        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8773
 8774        let item = cx.new(|cx| {
 8775            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8776        });
 8777        let item_id = item.entity_id();
 8778        workspace.update_in(cx, |workspace, window, cx| {
 8779            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8780        });
 8781
 8782        // Autosave on window change.
 8783        item.update(cx, |item, cx| {
 8784            SettingsStore::update_global(cx, |settings, cx| {
 8785                settings.update_user_settings(cx, |settings| {
 8786                    settings.workspace.autosave = Some(AutosaveSetting::OnWindowChange);
 8787                })
 8788            });
 8789            item.is_dirty = true;
 8790        });
 8791
 8792        // Deactivating the window saves the file.
 8793        cx.deactivate_window();
 8794        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8795
 8796        // Re-activating the window doesn't save the file.
 8797        cx.update(|window, _| window.activate_window());
 8798        cx.executor().run_until_parked();
 8799        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8800
 8801        // Autosave on focus change.
 8802        item.update_in(cx, |item, window, cx| {
 8803            cx.focus_self(window);
 8804            SettingsStore::update_global(cx, |settings, cx| {
 8805                settings.update_user_settings(cx, |settings| {
 8806                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
 8807                })
 8808            });
 8809            item.is_dirty = true;
 8810        });
 8811        // Blurring the item saves the file.
 8812        item.update_in(cx, |_, window, _| window.blur());
 8813        cx.executor().run_until_parked();
 8814        item.read_with(cx, |item, _| assert_eq!(item.save_count, 2));
 8815
 8816        // Deactivating the window still saves the file.
 8817        item.update_in(cx, |item, window, cx| {
 8818            cx.focus_self(window);
 8819            item.is_dirty = true;
 8820        });
 8821        cx.deactivate_window();
 8822        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
 8823
 8824        // Autosave after delay.
 8825        item.update(cx, |item, cx| {
 8826            SettingsStore::update_global(cx, |settings, cx| {
 8827                settings.update_user_settings(cx, |settings| {
 8828                    settings.workspace.autosave = Some(AutosaveSetting::AfterDelay {
 8829                        milliseconds: 500.into(),
 8830                    });
 8831                })
 8832            });
 8833            item.is_dirty = true;
 8834            cx.emit(ItemEvent::Edit);
 8835        });
 8836
 8837        // Delay hasn't fully expired, so the file is still dirty and unsaved.
 8838        cx.executor().advance_clock(Duration::from_millis(250));
 8839        item.read_with(cx, |item, _| assert_eq!(item.save_count, 3));
 8840
 8841        // After delay expires, the file is saved.
 8842        cx.executor().advance_clock(Duration::from_millis(250));
 8843        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
 8844
 8845        // Autosave after delay, should save earlier than delay if tab is closed
 8846        item.update(cx, |item, cx| {
 8847            item.is_dirty = true;
 8848            cx.emit(ItemEvent::Edit);
 8849        });
 8850        cx.executor().advance_clock(Duration::from_millis(250));
 8851        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
 8852
 8853        // // Ensure auto save with delay saves the item on close, even if the timer hasn't yet run out.
 8854        pane.update_in(cx, |pane, window, cx| {
 8855            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8856        })
 8857        .await
 8858        .unwrap();
 8859        assert!(!cx.has_pending_prompt());
 8860        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8861
 8862        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
 8863        workspace.update_in(cx, |workspace, window, cx| {
 8864            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8865        });
 8866        item.update_in(cx, |item, _window, cx| {
 8867            item.is_dirty = true;
 8868            for project_item in &mut item.project_items {
 8869                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8870            }
 8871        });
 8872        cx.run_until_parked();
 8873        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8874
 8875        // Autosave on focus change, ensuring closing the tab counts as such.
 8876        item.update(cx, |item, cx| {
 8877            SettingsStore::update_global(cx, |settings, cx| {
 8878                settings.update_user_settings(cx, |settings| {
 8879                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
 8880                })
 8881            });
 8882            item.is_dirty = true;
 8883            for project_item in &mut item.project_items {
 8884                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8885            }
 8886        });
 8887
 8888        pane.update_in(cx, |pane, window, cx| {
 8889            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8890        })
 8891        .await
 8892        .unwrap();
 8893        assert!(!cx.has_pending_prompt());
 8894        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
 8895
 8896        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
 8897        workspace.update_in(cx, |workspace, window, cx| {
 8898            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8899        });
 8900        item.update_in(cx, |item, window, cx| {
 8901            item.project_items[0].update(cx, |item, _| {
 8902                item.entry_id = None;
 8903            });
 8904            item.is_dirty = true;
 8905            window.blur();
 8906        });
 8907        cx.run_until_parked();
 8908        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
 8909
 8910        // Ensure autosave is prevented for deleted files also when closing the buffer.
 8911        let _close_items = pane.update_in(cx, |pane, window, cx| {
 8912            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8913        });
 8914        cx.run_until_parked();
 8915        assert!(cx.has_pending_prompt());
 8916        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
 8917    }
 8918
 8919    #[gpui::test]
 8920    async fn test_pane_navigation(cx: &mut gpui::TestAppContext) {
 8921        init_test(cx);
 8922
 8923        let fs = FakeFs::new(cx.executor());
 8924
 8925        let project = Project::test(fs, [], cx).await;
 8926        let (workspace, cx) =
 8927            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8928
 8929        let item = cx.new(|cx| {
 8930            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8931        });
 8932        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8933        let toolbar = pane.read_with(cx, |pane, _| pane.toolbar().clone());
 8934        let toolbar_notify_count = Rc::new(RefCell::new(0));
 8935
 8936        workspace.update_in(cx, |workspace, window, cx| {
 8937            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8938            let toolbar_notification_count = toolbar_notify_count.clone();
 8939            cx.observe_in(&toolbar, window, move |_, _, _, _| {
 8940                *toolbar_notification_count.borrow_mut() += 1
 8941            })
 8942            .detach();
 8943        });
 8944
 8945        pane.read_with(cx, |pane, _| {
 8946            assert!(!pane.can_navigate_backward());
 8947            assert!(!pane.can_navigate_forward());
 8948        });
 8949
 8950        item.update_in(cx, |item, _, cx| {
 8951            item.set_state("one".to_string(), cx);
 8952        });
 8953
 8954        // Toolbar must be notified to re-render the navigation buttons
 8955        assert_eq!(*toolbar_notify_count.borrow(), 1);
 8956
 8957        pane.read_with(cx, |pane, _| {
 8958            assert!(pane.can_navigate_backward());
 8959            assert!(!pane.can_navigate_forward());
 8960        });
 8961
 8962        workspace
 8963            .update_in(cx, |workspace, window, cx| {
 8964                workspace.go_back(pane.downgrade(), window, cx)
 8965            })
 8966            .await
 8967            .unwrap();
 8968
 8969        assert_eq!(*toolbar_notify_count.borrow(), 2);
 8970        pane.read_with(cx, |pane, _| {
 8971            assert!(!pane.can_navigate_backward());
 8972            assert!(pane.can_navigate_forward());
 8973        });
 8974    }
 8975
 8976    #[gpui::test]
 8977    async fn test_toggle_docks_and_panels(cx: &mut gpui::TestAppContext) {
 8978        init_test(cx);
 8979        let fs = FakeFs::new(cx.executor());
 8980
 8981        let project = Project::test(fs, [], cx).await;
 8982        let (workspace, cx) =
 8983            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8984
 8985        let panel = workspace.update_in(cx, |workspace, window, cx| {
 8986            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 8987            workspace.add_panel(panel.clone(), window, cx);
 8988
 8989            workspace
 8990                .right_dock()
 8991                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
 8992
 8993            panel
 8994        });
 8995
 8996        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8997        pane.update_in(cx, |pane, window, cx| {
 8998            let item = cx.new(TestItem::new);
 8999            pane.add_item(Box::new(item), true, true, None, window, cx);
 9000        });
 9001
 9002        // Transfer focus from center to panel
 9003        workspace.update_in(cx, |workspace, window, cx| {
 9004            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 9005        });
 9006
 9007        workspace.update_in(cx, |workspace, window, cx| {
 9008            assert!(workspace.right_dock().read(cx).is_open());
 9009            assert!(!panel.is_zoomed(window, cx));
 9010            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9011        });
 9012
 9013        // Transfer focus from panel to center
 9014        workspace.update_in(cx, |workspace, window, cx| {
 9015            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 9016        });
 9017
 9018        workspace.update_in(cx, |workspace, window, cx| {
 9019            assert!(workspace.right_dock().read(cx).is_open());
 9020            assert!(!panel.is_zoomed(window, cx));
 9021            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9022        });
 9023
 9024        // Close the dock
 9025        workspace.update_in(cx, |workspace, window, cx| {
 9026            workspace.toggle_dock(DockPosition::Right, window, cx);
 9027        });
 9028
 9029        workspace.update_in(cx, |workspace, window, cx| {
 9030            assert!(!workspace.right_dock().read(cx).is_open());
 9031            assert!(!panel.is_zoomed(window, cx));
 9032            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9033        });
 9034
 9035        // Open the dock
 9036        workspace.update_in(cx, |workspace, window, cx| {
 9037            workspace.toggle_dock(DockPosition::Right, window, cx);
 9038        });
 9039
 9040        workspace.update_in(cx, |workspace, window, cx| {
 9041            assert!(workspace.right_dock().read(cx).is_open());
 9042            assert!(!panel.is_zoomed(window, cx));
 9043            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9044        });
 9045
 9046        // Focus and zoom panel
 9047        panel.update_in(cx, |panel, window, cx| {
 9048            cx.focus_self(window);
 9049            panel.set_zoomed(true, window, cx)
 9050        });
 9051
 9052        workspace.update_in(cx, |workspace, window, cx| {
 9053            assert!(workspace.right_dock().read(cx).is_open());
 9054            assert!(panel.is_zoomed(window, cx));
 9055            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9056        });
 9057
 9058        // Transfer focus to the center closes the dock
 9059        workspace.update_in(cx, |workspace, window, cx| {
 9060            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 9061        });
 9062
 9063        workspace.update_in(cx, |workspace, window, cx| {
 9064            assert!(!workspace.right_dock().read(cx).is_open());
 9065            assert!(panel.is_zoomed(window, cx));
 9066            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9067        });
 9068
 9069        // Transferring focus back to the panel keeps it zoomed
 9070        workspace.update_in(cx, |workspace, window, cx| {
 9071            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 9072        });
 9073
 9074        workspace.update_in(cx, |workspace, window, cx| {
 9075            assert!(workspace.right_dock().read(cx).is_open());
 9076            assert!(panel.is_zoomed(window, cx));
 9077            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9078        });
 9079
 9080        // Close the dock while it is zoomed
 9081        workspace.update_in(cx, |workspace, window, cx| {
 9082            workspace.toggle_dock(DockPosition::Right, window, cx)
 9083        });
 9084
 9085        workspace.update_in(cx, |workspace, window, cx| {
 9086            assert!(!workspace.right_dock().read(cx).is_open());
 9087            assert!(panel.is_zoomed(window, cx));
 9088            assert!(workspace.zoomed.is_none());
 9089            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9090        });
 9091
 9092        // Opening the dock, when it's zoomed, retains focus
 9093        workspace.update_in(cx, |workspace, window, cx| {
 9094            workspace.toggle_dock(DockPosition::Right, window, cx)
 9095        });
 9096
 9097        workspace.update_in(cx, |workspace, window, cx| {
 9098            assert!(workspace.right_dock().read(cx).is_open());
 9099            assert!(panel.is_zoomed(window, cx));
 9100            assert!(workspace.zoomed.is_some());
 9101            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9102        });
 9103
 9104        // Unzoom and close the panel, zoom the active pane.
 9105        panel.update_in(cx, |panel, window, cx| panel.set_zoomed(false, window, cx));
 9106        workspace.update_in(cx, |workspace, window, cx| {
 9107            workspace.toggle_dock(DockPosition::Right, window, cx)
 9108        });
 9109        pane.update_in(cx, |pane, window, cx| {
 9110            pane.toggle_zoom(&Default::default(), window, cx)
 9111        });
 9112
 9113        // Opening a dock unzooms the pane.
 9114        workspace.update_in(cx, |workspace, window, cx| {
 9115            workspace.toggle_dock(DockPosition::Right, window, cx)
 9116        });
 9117        workspace.update_in(cx, |workspace, window, cx| {
 9118            let pane = pane.read(cx);
 9119            assert!(!pane.is_zoomed());
 9120            assert!(!pane.focus_handle(cx).is_focused(window));
 9121            assert!(workspace.right_dock().read(cx).is_open());
 9122            assert!(workspace.zoomed.is_none());
 9123        });
 9124    }
 9125
 9126    #[gpui::test]
 9127    async fn test_join_pane_into_next(cx: &mut gpui::TestAppContext) {
 9128        init_test(cx);
 9129
 9130        let fs = FakeFs::new(cx.executor());
 9131
 9132        let project = Project::test(fs, None, cx).await;
 9133        let (workspace, cx) =
 9134            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9135
 9136        // Let's arrange the panes like this:
 9137        //
 9138        // +-----------------------+
 9139        // |         top           |
 9140        // +------+--------+-------+
 9141        // | left | center | right |
 9142        // +------+--------+-------+
 9143        // |        bottom         |
 9144        // +-----------------------+
 9145
 9146        let top_item = cx.new(|cx| {
 9147            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "top.txt", cx)])
 9148        });
 9149        let bottom_item = cx.new(|cx| {
 9150            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "bottom.txt", cx)])
 9151        });
 9152        let left_item = cx.new(|cx| {
 9153            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "left.txt", cx)])
 9154        });
 9155        let right_item = cx.new(|cx| {
 9156            TestItem::new(cx).with_project_items(&[TestProjectItem::new(4, "right.txt", cx)])
 9157        });
 9158        let center_item = cx.new(|cx| {
 9159            TestItem::new(cx).with_project_items(&[TestProjectItem::new(5, "center.txt", cx)])
 9160        });
 9161
 9162        let top_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9163            let top_pane_id = workspace.active_pane().entity_id();
 9164            workspace.add_item_to_active_pane(Box::new(top_item.clone()), None, false, window, cx);
 9165            workspace.split_pane(
 9166                workspace.active_pane().clone(),
 9167                SplitDirection::Down,
 9168                window,
 9169                cx,
 9170            );
 9171            top_pane_id
 9172        });
 9173        let bottom_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9174            let bottom_pane_id = workspace.active_pane().entity_id();
 9175            workspace.add_item_to_active_pane(
 9176                Box::new(bottom_item.clone()),
 9177                None,
 9178                false,
 9179                window,
 9180                cx,
 9181            );
 9182            workspace.split_pane(
 9183                workspace.active_pane().clone(),
 9184                SplitDirection::Up,
 9185                window,
 9186                cx,
 9187            );
 9188            bottom_pane_id
 9189        });
 9190        let left_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9191            let left_pane_id = workspace.active_pane().entity_id();
 9192            workspace.add_item_to_active_pane(Box::new(left_item.clone()), None, false, window, cx);
 9193            workspace.split_pane(
 9194                workspace.active_pane().clone(),
 9195                SplitDirection::Right,
 9196                window,
 9197                cx,
 9198            );
 9199            left_pane_id
 9200        });
 9201        let right_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9202            let right_pane_id = workspace.active_pane().entity_id();
 9203            workspace.add_item_to_active_pane(
 9204                Box::new(right_item.clone()),
 9205                None,
 9206                false,
 9207                window,
 9208                cx,
 9209            );
 9210            workspace.split_pane(
 9211                workspace.active_pane().clone(),
 9212                SplitDirection::Left,
 9213                window,
 9214                cx,
 9215            );
 9216            right_pane_id
 9217        });
 9218        let center_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9219            let center_pane_id = workspace.active_pane().entity_id();
 9220            workspace.add_item_to_active_pane(
 9221                Box::new(center_item.clone()),
 9222                None,
 9223                false,
 9224                window,
 9225                cx,
 9226            );
 9227            center_pane_id
 9228        });
 9229        cx.executor().run_until_parked();
 9230
 9231        workspace.update_in(cx, |workspace, window, cx| {
 9232            assert_eq!(center_pane_id, workspace.active_pane().entity_id());
 9233
 9234            // Join into next from center pane into right
 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!(right_pane_id, active_pane.entity_id());
 9241            assert_eq!(2, 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
 9247            // Join into next from right pane into bottom
 9248            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9249        });
 9250
 9251        workspace.update_in(cx, |workspace, window, cx| {
 9252            let active_pane = workspace.active_pane();
 9253            assert_eq!(bottom_pane_id, active_pane.entity_id());
 9254            assert_eq!(3, active_pane.read(cx).items_len());
 9255            let item_ids_in_pane =
 9256                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9257            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9258            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9259            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9260
 9261            // Join into next from bottom pane into left
 9262            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9263        });
 9264
 9265        workspace.update_in(cx, |workspace, window, cx| {
 9266            let active_pane = workspace.active_pane();
 9267            assert_eq!(left_pane_id, active_pane.entity_id());
 9268            assert_eq!(4, active_pane.read(cx).items_len());
 9269            let item_ids_in_pane =
 9270                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9271            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9272            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9273            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9274            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9275
 9276            // Join into next from left pane into top
 9277            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9278        });
 9279
 9280        workspace.update_in(cx, |workspace, window, cx| {
 9281            let active_pane = workspace.active_pane();
 9282            assert_eq!(top_pane_id, active_pane.entity_id());
 9283            assert_eq!(5, active_pane.read(cx).items_len());
 9284            let item_ids_in_pane =
 9285                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9286            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9287            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9288            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9289            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9290            assert!(item_ids_in_pane.contains(&top_item.item_id()));
 9291
 9292            // Single pane left: no-op
 9293            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx)
 9294        });
 9295
 9296        workspace.update(cx, |workspace, _cx| {
 9297            let active_pane = workspace.active_pane();
 9298            assert_eq!(top_pane_id, active_pane.entity_id());
 9299        });
 9300    }
 9301
 9302    fn add_an_item_to_active_pane(
 9303        cx: &mut VisualTestContext,
 9304        workspace: &Entity<Workspace>,
 9305        item_id: u64,
 9306    ) -> Entity<TestItem> {
 9307        let item = cx.new(|cx| {
 9308            TestItem::new(cx).with_project_items(&[TestProjectItem::new(
 9309                item_id,
 9310                "item{item_id}.txt",
 9311                cx,
 9312            )])
 9313        });
 9314        workspace.update_in(cx, |workspace, window, cx| {
 9315            workspace.add_item_to_active_pane(Box::new(item.clone()), None, false, window, cx);
 9316        });
 9317        item
 9318    }
 9319
 9320    fn split_pane(cx: &mut VisualTestContext, workspace: &Entity<Workspace>) -> Entity<Pane> {
 9321        workspace.update_in(cx, |workspace, window, cx| {
 9322            workspace.split_pane(
 9323                workspace.active_pane().clone(),
 9324                SplitDirection::Right,
 9325                window,
 9326                cx,
 9327            )
 9328        })
 9329    }
 9330
 9331    #[gpui::test]
 9332    async fn test_join_all_panes(cx: &mut gpui::TestAppContext) {
 9333        init_test(cx);
 9334        let fs = FakeFs::new(cx.executor());
 9335        let project = Project::test(fs, None, cx).await;
 9336        let (workspace, cx) =
 9337            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9338
 9339        add_an_item_to_active_pane(cx, &workspace, 1);
 9340        split_pane(cx, &workspace);
 9341        add_an_item_to_active_pane(cx, &workspace, 2);
 9342        split_pane(cx, &workspace); // empty pane
 9343        split_pane(cx, &workspace);
 9344        let last_item = add_an_item_to_active_pane(cx, &workspace, 3);
 9345
 9346        cx.executor().run_until_parked();
 9347
 9348        workspace.update(cx, |workspace, cx| {
 9349            let num_panes = workspace.panes().len();
 9350            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9351            let active_item = workspace
 9352                .active_pane()
 9353                .read(cx)
 9354                .active_item()
 9355                .expect("item is in focus");
 9356
 9357            assert_eq!(num_panes, 4);
 9358            assert_eq!(num_items_in_current_pane, 1);
 9359            assert_eq!(active_item.item_id(), last_item.item_id());
 9360        });
 9361
 9362        workspace.update_in(cx, |workspace, window, cx| {
 9363            workspace.join_all_panes(window, cx);
 9364        });
 9365
 9366        workspace.update(cx, |workspace, cx| {
 9367            let num_panes = workspace.panes().len();
 9368            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9369            let active_item = workspace
 9370                .active_pane()
 9371                .read(cx)
 9372                .active_item()
 9373                .expect("item is in focus");
 9374
 9375            assert_eq!(num_panes, 1);
 9376            assert_eq!(num_items_in_current_pane, 3);
 9377            assert_eq!(active_item.item_id(), last_item.item_id());
 9378        });
 9379    }
 9380    struct TestModal(FocusHandle);
 9381
 9382    impl TestModal {
 9383        fn new(_: &mut Window, cx: &mut Context<Self>) -> Self {
 9384            Self(cx.focus_handle())
 9385        }
 9386    }
 9387
 9388    impl EventEmitter<DismissEvent> for TestModal {}
 9389
 9390    impl Focusable for TestModal {
 9391        fn focus_handle(&self, _cx: &App) -> FocusHandle {
 9392            self.0.clone()
 9393        }
 9394    }
 9395
 9396    impl ModalView for TestModal {}
 9397
 9398    impl Render for TestModal {
 9399        fn render(
 9400            &mut self,
 9401            _window: &mut Window,
 9402            _cx: &mut Context<TestModal>,
 9403        ) -> impl IntoElement {
 9404            div().track_focus(&self.0)
 9405        }
 9406    }
 9407
 9408    #[gpui::test]
 9409    async fn test_panels(cx: &mut gpui::TestAppContext) {
 9410        init_test(cx);
 9411        let fs = FakeFs::new(cx.executor());
 9412
 9413        let project = Project::test(fs, [], cx).await;
 9414        let (workspace, cx) =
 9415            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9416
 9417        let (panel_1, panel_2) = workspace.update_in(cx, |workspace, window, cx| {
 9418            let panel_1 = cx.new(|cx| TestPanel::new(DockPosition::Left, cx));
 9419            workspace.add_panel(panel_1.clone(), window, cx);
 9420            workspace.toggle_dock(DockPosition::Left, window, cx);
 9421            let panel_2 = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 9422            workspace.add_panel(panel_2.clone(), window, cx);
 9423            workspace.toggle_dock(DockPosition::Right, window, cx);
 9424
 9425            let left_dock = workspace.left_dock();
 9426            assert_eq!(
 9427                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9428                panel_1.panel_id()
 9429            );
 9430            assert_eq!(
 9431                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9432                panel_1.size(window, cx)
 9433            );
 9434
 9435            left_dock.update(cx, |left_dock, cx| {
 9436                left_dock.resize_active_panel(Some(px(1337.)), window, cx)
 9437            });
 9438            assert_eq!(
 9439                workspace
 9440                    .right_dock()
 9441                    .read(cx)
 9442                    .visible_panel()
 9443                    .unwrap()
 9444                    .panel_id(),
 9445                panel_2.panel_id(),
 9446            );
 9447
 9448            (panel_1, panel_2)
 9449        });
 9450
 9451        // Move panel_1 to the right
 9452        panel_1.update_in(cx, |panel_1, window, cx| {
 9453            panel_1.set_position(DockPosition::Right, window, cx)
 9454        });
 9455
 9456        workspace.update_in(cx, |workspace, window, cx| {
 9457            // Since panel_1 was visible on the left, it should now be visible now that it's been moved to the right.
 9458            // Since it was the only panel on the left, the left dock should now be closed.
 9459            assert!(!workspace.left_dock().read(cx).is_open());
 9460            assert!(workspace.left_dock().read(cx).visible_panel().is_none());
 9461            let right_dock = workspace.right_dock();
 9462            assert_eq!(
 9463                right_dock.read(cx).visible_panel().unwrap().panel_id(),
 9464                panel_1.panel_id()
 9465            );
 9466            assert_eq!(
 9467                right_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9468                px(1337.)
 9469            );
 9470
 9471            // Now we move panel_2 to the left
 9472            panel_2.set_position(DockPosition::Left, window, cx);
 9473        });
 9474
 9475        workspace.update(cx, |workspace, cx| {
 9476            // Since panel_2 was not visible on the right, we don't open the left dock.
 9477            assert!(!workspace.left_dock().read(cx).is_open());
 9478            // And the right dock is unaffected in its displaying of panel_1
 9479            assert!(workspace.right_dock().read(cx).is_open());
 9480            assert_eq!(
 9481                workspace
 9482                    .right_dock()
 9483                    .read(cx)
 9484                    .visible_panel()
 9485                    .unwrap()
 9486                    .panel_id(),
 9487                panel_1.panel_id(),
 9488            );
 9489        });
 9490
 9491        // Move panel_1 back to the left
 9492        panel_1.update_in(cx, |panel_1, window, cx| {
 9493            panel_1.set_position(DockPosition::Left, window, cx)
 9494        });
 9495
 9496        workspace.update_in(cx, |workspace, window, cx| {
 9497            // Since panel_1 was visible on the right, we open the left dock and make panel_1 active.
 9498            let left_dock = workspace.left_dock();
 9499            assert!(left_dock.read(cx).is_open());
 9500            assert_eq!(
 9501                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9502                panel_1.panel_id()
 9503            );
 9504            assert_eq!(
 9505                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9506                px(1337.)
 9507            );
 9508            // And the right dock should be closed as it no longer has any panels.
 9509            assert!(!workspace.right_dock().read(cx).is_open());
 9510
 9511            // Now we move panel_1 to the bottom
 9512            panel_1.set_position(DockPosition::Bottom, window, cx);
 9513        });
 9514
 9515        workspace.update_in(cx, |workspace, window, cx| {
 9516            // Since panel_1 was visible on the left, we close the left dock.
 9517            assert!(!workspace.left_dock().read(cx).is_open());
 9518            // The bottom dock is sized based on the panel's default size,
 9519            // since the panel orientation changed from vertical to horizontal.
 9520            let bottom_dock = workspace.bottom_dock();
 9521            assert_eq!(
 9522                bottom_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9523                panel_1.size(window, cx),
 9524            );
 9525            // Close bottom dock and move panel_1 back to the left.
 9526            bottom_dock.update(cx, |bottom_dock, cx| {
 9527                bottom_dock.set_open(false, window, cx)
 9528            });
 9529            panel_1.set_position(DockPosition::Left, window, cx);
 9530        });
 9531
 9532        // Emit activated event on panel 1
 9533        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Activate));
 9534
 9535        // Now the left dock is open and panel_1 is active and focused.
 9536        workspace.update_in(cx, |workspace, window, cx| {
 9537            let left_dock = workspace.left_dock();
 9538            assert!(left_dock.read(cx).is_open());
 9539            assert_eq!(
 9540                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9541                panel_1.panel_id(),
 9542            );
 9543            assert!(panel_1.focus_handle(cx).is_focused(window));
 9544        });
 9545
 9546        // Emit closed event on panel 2, which is not active
 9547        panel_2.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9548
 9549        // Wo don't close the left dock, because panel_2 wasn't the active panel
 9550        workspace.update(cx, |workspace, cx| {
 9551            let left_dock = workspace.left_dock();
 9552            assert!(left_dock.read(cx).is_open());
 9553            assert_eq!(
 9554                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9555                panel_1.panel_id(),
 9556            );
 9557        });
 9558
 9559        // Emitting a ZoomIn event shows the panel as zoomed.
 9560        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomIn));
 9561        workspace.read_with(cx, |workspace, _| {
 9562            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9563            assert_eq!(workspace.zoomed_position, Some(DockPosition::Left));
 9564        });
 9565
 9566        // Move panel to another dock while it is zoomed
 9567        panel_1.update_in(cx, |panel, window, cx| {
 9568            panel.set_position(DockPosition::Right, window, cx)
 9569        });
 9570        workspace.read_with(cx, |workspace, _| {
 9571            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9572
 9573            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9574        });
 9575
 9576        // This is a helper for getting a:
 9577        // - valid focus on an element,
 9578        // - that isn't a part of the panes and panels system of the Workspace,
 9579        // - and doesn't trigger the 'on_focus_lost' API.
 9580        let focus_other_view = {
 9581            let workspace = workspace.clone();
 9582            move |cx: &mut VisualTestContext| {
 9583                workspace.update_in(cx, |workspace, window, cx| {
 9584                    if workspace.active_modal::<TestModal>(cx).is_some() {
 9585                        workspace.toggle_modal(window, cx, TestModal::new);
 9586                        workspace.toggle_modal(window, cx, TestModal::new);
 9587                    } else {
 9588                        workspace.toggle_modal(window, cx, TestModal::new);
 9589                    }
 9590                })
 9591            }
 9592        };
 9593
 9594        // If focus is transferred to another view that's not a panel or another pane, we still show
 9595        // the panel as zoomed.
 9596        focus_other_view(cx);
 9597        workspace.read_with(cx, |workspace, _| {
 9598            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9599            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9600        });
 9601
 9602        // If focus is transferred elsewhere in the workspace, the panel is no longer zoomed.
 9603        workspace.update_in(cx, |_workspace, window, cx| {
 9604            cx.focus_self(window);
 9605        });
 9606        workspace.read_with(cx, |workspace, _| {
 9607            assert_eq!(workspace.zoomed, None);
 9608            assert_eq!(workspace.zoomed_position, None);
 9609        });
 9610
 9611        // If focus is transferred again to another view that's not a panel or a pane, we won't
 9612        // show the panel as zoomed because it wasn't zoomed before.
 9613        focus_other_view(cx);
 9614        workspace.read_with(cx, |workspace, _| {
 9615            assert_eq!(workspace.zoomed, None);
 9616            assert_eq!(workspace.zoomed_position, None);
 9617        });
 9618
 9619        // When the panel is activated, it is zoomed again.
 9620        cx.dispatch_action(ToggleRightDock);
 9621        workspace.read_with(cx, |workspace, _| {
 9622            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9623            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9624        });
 9625
 9626        // Emitting a ZoomOut event unzooms the panel.
 9627        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomOut));
 9628        workspace.read_with(cx, |workspace, _| {
 9629            assert_eq!(workspace.zoomed, None);
 9630            assert_eq!(workspace.zoomed_position, None);
 9631        });
 9632
 9633        // Emit closed event on panel 1, which is active
 9634        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9635
 9636        // Now the left dock is closed, because panel_1 was the active panel
 9637        workspace.update(cx, |workspace, cx| {
 9638            let right_dock = workspace.right_dock();
 9639            assert!(!right_dock.read(cx).is_open());
 9640        });
 9641    }
 9642
 9643    #[gpui::test]
 9644    async fn test_no_save_prompt_when_multi_buffer_dirty_items_closed(cx: &mut TestAppContext) {
 9645        init_test(cx);
 9646
 9647        let fs = FakeFs::new(cx.background_executor.clone());
 9648        let project = Project::test(fs, [], cx).await;
 9649        let (workspace, cx) =
 9650            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9651        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9652
 9653        let dirty_regular_buffer = cx.new(|cx| {
 9654            TestItem::new(cx)
 9655                .with_dirty(true)
 9656                .with_label("1.txt")
 9657                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9658        });
 9659        let dirty_regular_buffer_2 = cx.new(|cx| {
 9660            TestItem::new(cx)
 9661                .with_dirty(true)
 9662                .with_label("2.txt")
 9663                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9664        });
 9665        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9666            TestItem::new(cx)
 9667                .with_dirty(true)
 9668                .with_buffer_kind(ItemBufferKind::Multibuffer)
 9669                .with_label("Fake Project Search")
 9670                .with_project_items(&[
 9671                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9672                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9673                ])
 9674        });
 9675        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9676        workspace.update_in(cx, |workspace, window, cx| {
 9677            workspace.add_item(
 9678                pane.clone(),
 9679                Box::new(dirty_regular_buffer.clone()),
 9680                None,
 9681                false,
 9682                false,
 9683                window,
 9684                cx,
 9685            );
 9686            workspace.add_item(
 9687                pane.clone(),
 9688                Box::new(dirty_regular_buffer_2.clone()),
 9689                None,
 9690                false,
 9691                false,
 9692                window,
 9693                cx,
 9694            );
 9695            workspace.add_item(
 9696                pane.clone(),
 9697                Box::new(dirty_multi_buffer_with_both.clone()),
 9698                None,
 9699                false,
 9700                false,
 9701                window,
 9702                cx,
 9703            );
 9704        });
 9705
 9706        pane.update_in(cx, |pane, window, cx| {
 9707            pane.activate_item(2, true, true, window, cx);
 9708            assert_eq!(
 9709                pane.active_item().unwrap().item_id(),
 9710                multi_buffer_with_both_files_id,
 9711                "Should select the multi buffer in the pane"
 9712            );
 9713        });
 9714        let close_all_but_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9715            pane.close_other_items(
 9716                &CloseOtherItems {
 9717                    save_intent: Some(SaveIntent::Save),
 9718                    close_pinned: true,
 9719                },
 9720                None,
 9721                window,
 9722                cx,
 9723            )
 9724        });
 9725        cx.background_executor.run_until_parked();
 9726        assert!(!cx.has_pending_prompt());
 9727        close_all_but_multi_buffer_task
 9728            .await
 9729            .expect("Closing all buffers but the multi buffer failed");
 9730        pane.update(cx, |pane, cx| {
 9731            assert_eq!(dirty_regular_buffer.read(cx).save_count, 1);
 9732            assert_eq!(dirty_multi_buffer_with_both.read(cx).save_count, 0);
 9733            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 1);
 9734            assert_eq!(pane.items_len(), 1);
 9735            assert_eq!(
 9736                pane.active_item().unwrap().item_id(),
 9737                multi_buffer_with_both_files_id,
 9738                "Should have only the multi buffer left in the pane"
 9739            );
 9740            assert!(
 9741                dirty_multi_buffer_with_both.read(cx).is_dirty,
 9742                "The multi buffer containing the unsaved buffer should still be dirty"
 9743            );
 9744        });
 9745
 9746        dirty_regular_buffer.update(cx, |buffer, cx| {
 9747            buffer.project_items[0].update(cx, |pi, _| pi.is_dirty = true)
 9748        });
 9749
 9750        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9751            pane.close_active_item(
 9752                &CloseActiveItem {
 9753                    save_intent: Some(SaveIntent::Close),
 9754                    close_pinned: false,
 9755                },
 9756                window,
 9757                cx,
 9758            )
 9759        });
 9760        cx.background_executor.run_until_parked();
 9761        assert!(
 9762            cx.has_pending_prompt(),
 9763            "Dirty multi buffer should prompt a save dialog"
 9764        );
 9765        cx.simulate_prompt_answer("Save");
 9766        cx.background_executor.run_until_parked();
 9767        close_multi_buffer_task
 9768            .await
 9769            .expect("Closing the multi buffer failed");
 9770        pane.update(cx, |pane, cx| {
 9771            assert_eq!(
 9772                dirty_multi_buffer_with_both.read(cx).save_count,
 9773                1,
 9774                "Multi buffer item should get be saved"
 9775            );
 9776            // Test impl does not save inner items, so we do not assert them
 9777            assert_eq!(
 9778                pane.items_len(),
 9779                0,
 9780                "No more items should be left in the pane"
 9781            );
 9782            assert!(pane.active_item().is_none());
 9783        });
 9784    }
 9785
 9786    #[gpui::test]
 9787    async fn test_save_prompt_when_dirty_multi_buffer_closed_with_some_of_its_dirty_items_not_present_in_the_pane(
 9788        cx: &mut TestAppContext,
 9789    ) {
 9790        init_test(cx);
 9791
 9792        let fs = FakeFs::new(cx.background_executor.clone());
 9793        let project = Project::test(fs, [], cx).await;
 9794        let (workspace, cx) =
 9795            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9796        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9797
 9798        let dirty_regular_buffer = cx.new(|cx| {
 9799            TestItem::new(cx)
 9800                .with_dirty(true)
 9801                .with_label("1.txt")
 9802                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9803        });
 9804        let dirty_regular_buffer_2 = cx.new(|cx| {
 9805            TestItem::new(cx)
 9806                .with_dirty(true)
 9807                .with_label("2.txt")
 9808                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9809        });
 9810        let clear_regular_buffer = cx.new(|cx| {
 9811            TestItem::new(cx)
 9812                .with_label("3.txt")
 9813                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
 9814        });
 9815
 9816        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9817            TestItem::new(cx)
 9818                .with_dirty(true)
 9819                .with_buffer_kind(ItemBufferKind::Multibuffer)
 9820                .with_label("Fake Project Search")
 9821                .with_project_items(&[
 9822                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9823                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9824                    clear_regular_buffer.read(cx).project_items[0].clone(),
 9825                ])
 9826        });
 9827        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9828        workspace.update_in(cx, |workspace, window, cx| {
 9829            workspace.add_item(
 9830                pane.clone(),
 9831                Box::new(dirty_regular_buffer.clone()),
 9832                None,
 9833                false,
 9834                false,
 9835                window,
 9836                cx,
 9837            );
 9838            workspace.add_item(
 9839                pane.clone(),
 9840                Box::new(dirty_multi_buffer_with_both.clone()),
 9841                None,
 9842                false,
 9843                false,
 9844                window,
 9845                cx,
 9846            );
 9847        });
 9848
 9849        pane.update_in(cx, |pane, window, cx| {
 9850            pane.activate_item(1, true, true, window, cx);
 9851            assert_eq!(
 9852                pane.active_item().unwrap().item_id(),
 9853                multi_buffer_with_both_files_id,
 9854                "Should select the multi buffer in the pane"
 9855            );
 9856        });
 9857        let _close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9858            pane.close_active_item(
 9859                &CloseActiveItem {
 9860                    save_intent: None,
 9861                    close_pinned: false,
 9862                },
 9863                window,
 9864                cx,
 9865            )
 9866        });
 9867        cx.background_executor.run_until_parked();
 9868        assert!(
 9869            cx.has_pending_prompt(),
 9870            "With one dirty item from the multi buffer not being in the pane, a save prompt should be shown"
 9871        );
 9872    }
 9873
 9874    /// Tests that when `close_on_file_delete` is enabled, files are automatically
 9875    /// closed when they are deleted from disk.
 9876    #[gpui::test]
 9877    async fn test_close_on_disk_deletion_enabled(cx: &mut TestAppContext) {
 9878        init_test(cx);
 9879
 9880        // Enable the close_on_disk_deletion setting
 9881        cx.update_global(|store: &mut SettingsStore, cx| {
 9882            store.update_user_settings(cx, |settings| {
 9883                settings.workspace.close_on_file_delete = Some(true);
 9884            });
 9885        });
 9886
 9887        let fs = FakeFs::new(cx.background_executor.clone());
 9888        let project = Project::test(fs, [], cx).await;
 9889        let (workspace, cx) =
 9890            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9891        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9892
 9893        // Create a test item that simulates a file
 9894        let item = cx.new(|cx| {
 9895            TestItem::new(cx)
 9896                .with_label("test.txt")
 9897                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9898        });
 9899
 9900        // Add item to workspace
 9901        workspace.update_in(cx, |workspace, window, cx| {
 9902            workspace.add_item(
 9903                pane.clone(),
 9904                Box::new(item.clone()),
 9905                None,
 9906                false,
 9907                false,
 9908                window,
 9909                cx,
 9910            );
 9911        });
 9912
 9913        // Verify the item is in the pane
 9914        pane.read_with(cx, |pane, _| {
 9915            assert_eq!(pane.items().count(), 1);
 9916        });
 9917
 9918        // Simulate file deletion by setting the item's deleted state
 9919        item.update(cx, |item, _| {
 9920            item.set_has_deleted_file(true);
 9921        });
 9922
 9923        // Emit UpdateTab event to trigger the close behavior
 9924        cx.run_until_parked();
 9925        item.update(cx, |_, cx| {
 9926            cx.emit(ItemEvent::UpdateTab);
 9927        });
 9928
 9929        // Allow the close operation to complete
 9930        cx.run_until_parked();
 9931
 9932        // Verify the item was automatically closed
 9933        pane.read_with(cx, |pane, _| {
 9934            assert_eq!(
 9935                pane.items().count(),
 9936                0,
 9937                "Item should be automatically closed when file is deleted"
 9938            );
 9939        });
 9940    }
 9941
 9942    /// Tests that when `close_on_file_delete` is disabled (default), files remain
 9943    /// open with a strikethrough when they are deleted from disk.
 9944    #[gpui::test]
 9945    async fn test_close_on_disk_deletion_disabled(cx: &mut TestAppContext) {
 9946        init_test(cx);
 9947
 9948        // Ensure close_on_disk_deletion is disabled (default)
 9949        cx.update_global(|store: &mut SettingsStore, cx| {
 9950            store.update_user_settings(cx, |settings| {
 9951                settings.workspace.close_on_file_delete = Some(false);
 9952            });
 9953        });
 9954
 9955        let fs = FakeFs::new(cx.background_executor.clone());
 9956        let project = Project::test(fs, [], cx).await;
 9957        let (workspace, cx) =
 9958            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9959        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9960
 9961        // Create a test item that simulates a file
 9962        let item = cx.new(|cx| {
 9963            TestItem::new(cx)
 9964                .with_label("test.txt")
 9965                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9966        });
 9967
 9968        // Add item to workspace
 9969        workspace.update_in(cx, |workspace, window, cx| {
 9970            workspace.add_item(
 9971                pane.clone(),
 9972                Box::new(item.clone()),
 9973                None,
 9974                false,
 9975                false,
 9976                window,
 9977                cx,
 9978            );
 9979        });
 9980
 9981        // Verify the item is in the pane
 9982        pane.read_with(cx, |pane, _| {
 9983            assert_eq!(pane.items().count(), 1);
 9984        });
 9985
 9986        // Simulate file deletion
 9987        item.update(cx, |item, _| {
 9988            item.set_has_deleted_file(true);
 9989        });
 9990
 9991        // Emit UpdateTab event
 9992        cx.run_until_parked();
 9993        item.update(cx, |_, cx| {
 9994            cx.emit(ItemEvent::UpdateTab);
 9995        });
 9996
 9997        // Allow any potential close operation to complete
 9998        cx.run_until_parked();
 9999
10000        // Verify the item remains open (with strikethrough)
10001        pane.read_with(cx, |pane, _| {
10002            assert_eq!(
10003                pane.items().count(),
10004                1,
10005                "Item should remain open when close_on_disk_deletion is disabled"
10006            );
10007        });
10008
10009        // Verify the item shows as deleted
10010        item.read_with(cx, |item, _| {
10011            assert!(
10012                item.has_deleted_file,
10013                "Item should be marked as having deleted file"
10014            );
10015        });
10016    }
10017
10018    /// Tests that dirty files are not automatically closed when deleted from disk,
10019    /// even when `close_on_file_delete` is enabled. This ensures users don't lose
10020    /// unsaved changes without being prompted.
10021    #[gpui::test]
10022    async fn test_close_on_disk_deletion_with_dirty_file(cx: &mut TestAppContext) {
10023        init_test(cx);
10024
10025        // Enable the close_on_file_delete setting
10026        cx.update_global(|store: &mut SettingsStore, cx| {
10027            store.update_user_settings(cx, |settings| {
10028                settings.workspace.close_on_file_delete = Some(true);
10029            });
10030        });
10031
10032        let fs = FakeFs::new(cx.background_executor.clone());
10033        let project = Project::test(fs, [], cx).await;
10034        let (workspace, cx) =
10035            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10036        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10037
10038        // Create a dirty test item
10039        let item = cx.new(|cx| {
10040            TestItem::new(cx)
10041                .with_dirty(true)
10042                .with_label("test.txt")
10043                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
10044        });
10045
10046        // Add item to workspace
10047        workspace.update_in(cx, |workspace, window, cx| {
10048            workspace.add_item(
10049                pane.clone(),
10050                Box::new(item.clone()),
10051                None,
10052                false,
10053                false,
10054                window,
10055                cx,
10056            );
10057        });
10058
10059        // Simulate file deletion
10060        item.update(cx, |item, _| {
10061            item.set_has_deleted_file(true);
10062        });
10063
10064        // Emit UpdateTab event to trigger the close behavior
10065        cx.run_until_parked();
10066        item.update(cx, |_, cx| {
10067            cx.emit(ItemEvent::UpdateTab);
10068        });
10069
10070        // Allow any potential close operation to complete
10071        cx.run_until_parked();
10072
10073        // Verify the item remains open (dirty files are not auto-closed)
10074        pane.read_with(cx, |pane, _| {
10075            assert_eq!(
10076                pane.items().count(),
10077                1,
10078                "Dirty items should not be automatically closed even when file is deleted"
10079            );
10080        });
10081
10082        // Verify the item is marked as deleted and still dirty
10083        item.read_with(cx, |item, _| {
10084            assert!(
10085                item.has_deleted_file,
10086                "Item should be marked as having deleted file"
10087            );
10088            assert!(item.is_dirty, "Item should still be dirty");
10089        });
10090    }
10091
10092    /// Tests that navigation history is cleaned up when files are auto-closed
10093    /// due to deletion from disk.
10094    #[gpui::test]
10095    async fn test_close_on_disk_deletion_cleans_navigation_history(cx: &mut TestAppContext) {
10096        init_test(cx);
10097
10098        // Enable the close_on_file_delete setting
10099        cx.update_global(|store: &mut SettingsStore, cx| {
10100            store.update_user_settings(cx, |settings| {
10101                settings.workspace.close_on_file_delete = Some(true);
10102            });
10103        });
10104
10105        let fs = FakeFs::new(cx.background_executor.clone());
10106        let project = Project::test(fs, [], cx).await;
10107        let (workspace, cx) =
10108            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10109        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10110
10111        // Create test items
10112        let item1 = cx.new(|cx| {
10113            TestItem::new(cx)
10114                .with_label("test1.txt")
10115                .with_project_items(&[TestProjectItem::new(1, "test1.txt", cx)])
10116        });
10117        let item1_id = item1.item_id();
10118
10119        let item2 = cx.new(|cx| {
10120            TestItem::new(cx)
10121                .with_label("test2.txt")
10122                .with_project_items(&[TestProjectItem::new(2, "test2.txt", cx)])
10123        });
10124
10125        // Add items to workspace
10126        workspace.update_in(cx, |workspace, window, cx| {
10127            workspace.add_item(
10128                pane.clone(),
10129                Box::new(item1.clone()),
10130                None,
10131                false,
10132                false,
10133                window,
10134                cx,
10135            );
10136            workspace.add_item(
10137                pane.clone(),
10138                Box::new(item2.clone()),
10139                None,
10140                false,
10141                false,
10142                window,
10143                cx,
10144            );
10145        });
10146
10147        // Activate item1 to ensure it gets navigation entries
10148        pane.update_in(cx, |pane, window, cx| {
10149            pane.activate_item(0, true, true, window, cx);
10150        });
10151
10152        // Switch to item2 and back to create navigation history
10153        pane.update_in(cx, |pane, window, cx| {
10154            pane.activate_item(1, true, true, window, cx);
10155        });
10156        cx.run_until_parked();
10157
10158        pane.update_in(cx, |pane, window, cx| {
10159            pane.activate_item(0, true, true, window, cx);
10160        });
10161        cx.run_until_parked();
10162
10163        // Simulate file deletion for item1
10164        item1.update(cx, |item, _| {
10165            item.set_has_deleted_file(true);
10166        });
10167
10168        // Emit UpdateTab event to trigger the close behavior
10169        item1.update(cx, |_, cx| {
10170            cx.emit(ItemEvent::UpdateTab);
10171        });
10172        cx.run_until_parked();
10173
10174        // Verify item1 was closed
10175        pane.read_with(cx, |pane, _| {
10176            assert_eq!(
10177                pane.items().count(),
10178                1,
10179                "Should have 1 item remaining after auto-close"
10180            );
10181        });
10182
10183        // Check navigation history after close
10184        let has_item = pane.read_with(cx, |pane, cx| {
10185            let mut has_item = false;
10186            pane.nav_history().for_each_entry(cx, |entry, _| {
10187                if entry.item.id() == item1_id {
10188                    has_item = true;
10189                }
10190            });
10191            has_item
10192        });
10193
10194        assert!(
10195            !has_item,
10196            "Navigation history should not contain closed item entries"
10197        );
10198    }
10199
10200    #[gpui::test]
10201    async fn test_no_save_prompt_when_dirty_multi_buffer_closed_with_all_of_its_dirty_items_present_in_the_pane(
10202        cx: &mut TestAppContext,
10203    ) {
10204        init_test(cx);
10205
10206        let fs = FakeFs::new(cx.background_executor.clone());
10207        let project = Project::test(fs, [], cx).await;
10208        let (workspace, cx) =
10209            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10210        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10211
10212        let dirty_regular_buffer = cx.new(|cx| {
10213            TestItem::new(cx)
10214                .with_dirty(true)
10215                .with_label("1.txt")
10216                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10217        });
10218        let dirty_regular_buffer_2 = cx.new(|cx| {
10219            TestItem::new(cx)
10220                .with_dirty(true)
10221                .with_label("2.txt")
10222                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10223        });
10224        let clear_regular_buffer = cx.new(|cx| {
10225            TestItem::new(cx)
10226                .with_label("3.txt")
10227                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
10228        });
10229
10230        let dirty_multi_buffer = cx.new(|cx| {
10231            TestItem::new(cx)
10232                .with_dirty(true)
10233                .with_buffer_kind(ItemBufferKind::Multibuffer)
10234                .with_label("Fake Project Search")
10235                .with_project_items(&[
10236                    dirty_regular_buffer.read(cx).project_items[0].clone(),
10237                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
10238                    clear_regular_buffer.read(cx).project_items[0].clone(),
10239                ])
10240        });
10241        workspace.update_in(cx, |workspace, window, cx| {
10242            workspace.add_item(
10243                pane.clone(),
10244                Box::new(dirty_regular_buffer.clone()),
10245                None,
10246                false,
10247                false,
10248                window,
10249                cx,
10250            );
10251            workspace.add_item(
10252                pane.clone(),
10253                Box::new(dirty_regular_buffer_2.clone()),
10254                None,
10255                false,
10256                false,
10257                window,
10258                cx,
10259            );
10260            workspace.add_item(
10261                pane.clone(),
10262                Box::new(dirty_multi_buffer.clone()),
10263                None,
10264                false,
10265                false,
10266                window,
10267                cx,
10268            );
10269        });
10270
10271        pane.update_in(cx, |pane, window, cx| {
10272            pane.activate_item(2, true, true, window, cx);
10273            assert_eq!(
10274                pane.active_item().unwrap().item_id(),
10275                dirty_multi_buffer.item_id(),
10276                "Should select the multi buffer in the pane"
10277            );
10278        });
10279        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
10280            pane.close_active_item(
10281                &CloseActiveItem {
10282                    save_intent: None,
10283                    close_pinned: false,
10284                },
10285                window,
10286                cx,
10287            )
10288        });
10289        cx.background_executor.run_until_parked();
10290        assert!(
10291            !cx.has_pending_prompt(),
10292            "All dirty items from the multi buffer are in the pane still, no save prompts should be shown"
10293        );
10294        close_multi_buffer_task
10295            .await
10296            .expect("Closing multi buffer failed");
10297        pane.update(cx, |pane, cx| {
10298            assert_eq!(dirty_regular_buffer.read(cx).save_count, 0);
10299            assert_eq!(dirty_multi_buffer.read(cx).save_count, 0);
10300            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 0);
10301            assert_eq!(
10302                pane.items()
10303                    .map(|item| item.item_id())
10304                    .sorted()
10305                    .collect::<Vec<_>>(),
10306                vec![
10307                    dirty_regular_buffer.item_id(),
10308                    dirty_regular_buffer_2.item_id(),
10309                ],
10310                "Should have no multi buffer left in the pane"
10311            );
10312            assert!(dirty_regular_buffer.read(cx).is_dirty);
10313            assert!(dirty_regular_buffer_2.read(cx).is_dirty);
10314        });
10315    }
10316
10317    #[gpui::test]
10318    async fn test_move_focused_panel_to_next_position(cx: &mut gpui::TestAppContext) {
10319        init_test(cx);
10320        let fs = FakeFs::new(cx.executor());
10321        let project = Project::test(fs, [], cx).await;
10322        let (workspace, cx) =
10323            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10324
10325        // Add a new panel to the right dock, opening the dock and setting the
10326        // focus to the new panel.
10327        let panel = workspace.update_in(cx, |workspace, window, cx| {
10328            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
10329            workspace.add_panel(panel.clone(), window, cx);
10330
10331            workspace
10332                .right_dock()
10333                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
10334
10335            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10336
10337            panel
10338        });
10339
10340        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10341        // panel to the next valid position which, in this case, is the left
10342        // dock.
10343        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10344        workspace.update(cx, |workspace, cx| {
10345            assert!(workspace.left_dock().read(cx).is_open());
10346            assert_eq!(panel.read(cx).position, DockPosition::Left);
10347        });
10348
10349        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10350        // panel to the next valid position which, in this case, is the bottom
10351        // dock.
10352        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10353        workspace.update(cx, |workspace, cx| {
10354            assert!(workspace.bottom_dock().read(cx).is_open());
10355            assert_eq!(panel.read(cx).position, DockPosition::Bottom);
10356        });
10357
10358        // Dispatch the `MoveFocusedPanelToNextPosition` action again, this time
10359        // around moving the panel to its initial position, the right dock.
10360        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10361        workspace.update(cx, |workspace, cx| {
10362            assert!(workspace.right_dock().read(cx).is_open());
10363            assert_eq!(panel.read(cx).position, DockPosition::Right);
10364        });
10365
10366        // Remove focus from the panel, ensuring that, if the panel is not
10367        // focused, the `MoveFocusedPanelToNextPosition` action does not update
10368        // the panel's position, so the panel is still in the right dock.
10369        workspace.update_in(cx, |workspace, window, cx| {
10370            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10371        });
10372
10373        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10374        workspace.update(cx, |workspace, cx| {
10375            assert!(workspace.right_dock().read(cx).is_open());
10376            assert_eq!(panel.read(cx).position, DockPosition::Right);
10377        });
10378    }
10379
10380    #[gpui::test]
10381    async fn test_moving_items_create_panes(cx: &mut TestAppContext) {
10382        init_test(cx);
10383
10384        let fs = FakeFs::new(cx.executor());
10385        let project = Project::test(fs, [], cx).await;
10386        let (workspace, cx) =
10387            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10388
10389        let item_1 = cx.new(|cx| {
10390            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10391        });
10392        workspace.update_in(cx, |workspace, window, cx| {
10393            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10394            workspace.move_item_to_pane_in_direction(
10395                &MoveItemToPaneInDirection {
10396                    direction: SplitDirection::Right,
10397                    focus: true,
10398                    clone: false,
10399                },
10400                window,
10401                cx,
10402            );
10403            workspace.move_item_to_pane_at_index(
10404                &MoveItemToPane {
10405                    destination: 3,
10406                    focus: true,
10407                    clone: false,
10408                },
10409                window,
10410                cx,
10411            );
10412
10413            assert_eq!(workspace.panes.len(), 1, "No new panes were created");
10414            assert_eq!(
10415                pane_items_paths(&workspace.active_pane, cx),
10416                vec!["first.txt".to_string()],
10417                "Single item was not moved anywhere"
10418            );
10419        });
10420
10421        let item_2 = cx.new(|cx| {
10422            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "second.txt", cx)])
10423        });
10424        workspace.update_in(cx, |workspace, window, cx| {
10425            workspace.add_item_to_active_pane(Box::new(item_2), None, true, window, cx);
10426            assert_eq!(
10427                pane_items_paths(&workspace.panes[0], cx),
10428                vec!["first.txt".to_string(), "second.txt".to_string()],
10429            );
10430            workspace.move_item_to_pane_in_direction(
10431                &MoveItemToPaneInDirection {
10432                    direction: SplitDirection::Right,
10433                    focus: true,
10434                    clone: false,
10435                },
10436                window,
10437                cx,
10438            );
10439
10440            assert_eq!(workspace.panes.len(), 2, "A new pane should be created");
10441            assert_eq!(
10442                pane_items_paths(&workspace.panes[0], cx),
10443                vec!["first.txt".to_string()],
10444                "After moving, one item should be left in the original pane"
10445            );
10446            assert_eq!(
10447                pane_items_paths(&workspace.panes[1], cx),
10448                vec!["second.txt".to_string()],
10449                "New item should have been moved to the new pane"
10450            );
10451        });
10452
10453        let item_3 = cx.new(|cx| {
10454            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "third.txt", cx)])
10455        });
10456        workspace.update_in(cx, |workspace, window, cx| {
10457            let original_pane = workspace.panes[0].clone();
10458            workspace.set_active_pane(&original_pane, window, cx);
10459            workspace.add_item_to_active_pane(Box::new(item_3), None, true, window, cx);
10460            assert_eq!(workspace.panes.len(), 2, "No new panes were created");
10461            assert_eq!(
10462                pane_items_paths(&workspace.active_pane, cx),
10463                vec!["first.txt".to_string(), "third.txt".to_string()],
10464                "New pane should be ready to move one item out"
10465            );
10466
10467            workspace.move_item_to_pane_at_index(
10468                &MoveItemToPane {
10469                    destination: 3,
10470                    focus: true,
10471                    clone: false,
10472                },
10473                window,
10474                cx,
10475            );
10476            assert_eq!(workspace.panes.len(), 3, "A new pane should be created");
10477            assert_eq!(
10478                pane_items_paths(&workspace.active_pane, cx),
10479                vec!["first.txt".to_string()],
10480                "After moving, one item should be left in the original pane"
10481            );
10482            assert_eq!(
10483                pane_items_paths(&workspace.panes[1], cx),
10484                vec!["second.txt".to_string()],
10485                "Previously created pane should be unchanged"
10486            );
10487            assert_eq!(
10488                pane_items_paths(&workspace.panes[2], cx),
10489                vec!["third.txt".to_string()],
10490                "New item should have been moved to the new pane"
10491            );
10492        });
10493    }
10494
10495    #[gpui::test]
10496    async fn test_moving_items_can_clone_panes(cx: &mut TestAppContext) {
10497        init_test(cx);
10498
10499        let fs = FakeFs::new(cx.executor());
10500        let project = Project::test(fs, [], cx).await;
10501        let (workspace, cx) =
10502            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10503
10504        let item_1 = cx.new(|cx| {
10505            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10506        });
10507        workspace.update_in(cx, |workspace, window, cx| {
10508            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10509            workspace.move_item_to_pane_in_direction(
10510                &MoveItemToPaneInDirection {
10511                    direction: SplitDirection::Right,
10512                    focus: true,
10513                    clone: true,
10514                },
10515                window,
10516                cx,
10517            );
10518            workspace.move_item_to_pane_at_index(
10519                &MoveItemToPane {
10520                    destination: 3,
10521                    focus: true,
10522                    clone: true,
10523                },
10524                window,
10525                cx,
10526            );
10527
10528            assert_eq!(workspace.panes.len(), 3, "Two new panes were created");
10529            for pane in workspace.panes() {
10530                assert_eq!(
10531                    pane_items_paths(pane, cx),
10532                    vec!["first.txt".to_string()],
10533                    "Single item exists in all panes"
10534                );
10535            }
10536        });
10537
10538        // verify that the active pane has been updated after waiting for the
10539        // pane focus event to fire and resolve
10540        workspace.read_with(cx, |workspace, _app| {
10541            assert_eq!(
10542                workspace.active_pane(),
10543                &workspace.panes[2],
10544                "The third pane should be the active one: {:?}",
10545                workspace.panes
10546            );
10547        })
10548    }
10549
10550    mod register_project_item_tests {
10551
10552        use super::*;
10553
10554        // View
10555        struct TestPngItemView {
10556            focus_handle: FocusHandle,
10557        }
10558        // Model
10559        struct TestPngItem {}
10560
10561        impl project::ProjectItem for TestPngItem {
10562            fn try_open(
10563                _project: &Entity<Project>,
10564                path: &ProjectPath,
10565                cx: &mut App,
10566            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10567                if path.path.extension().unwrap() == "png" {
10568                    Some(cx.spawn(async move |cx| cx.new(|_| TestPngItem {})))
10569                } else {
10570                    None
10571                }
10572            }
10573
10574            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10575                None
10576            }
10577
10578            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10579                None
10580            }
10581
10582            fn is_dirty(&self) -> bool {
10583                false
10584            }
10585        }
10586
10587        impl Item for TestPngItemView {
10588            type Event = ();
10589            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10590                "".into()
10591            }
10592        }
10593        impl EventEmitter<()> for TestPngItemView {}
10594        impl Focusable for TestPngItemView {
10595            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10596                self.focus_handle.clone()
10597            }
10598        }
10599
10600        impl Render for TestPngItemView {
10601            fn render(
10602                &mut self,
10603                _window: &mut Window,
10604                _cx: &mut Context<Self>,
10605            ) -> impl IntoElement {
10606                Empty
10607            }
10608        }
10609
10610        impl ProjectItem for TestPngItemView {
10611            type Item = TestPngItem;
10612
10613            fn for_project_item(
10614                _project: Entity<Project>,
10615                _pane: Option<&Pane>,
10616                _item: Entity<Self::Item>,
10617                _: &mut Window,
10618                cx: &mut Context<Self>,
10619            ) -> Self
10620            where
10621                Self: Sized,
10622            {
10623                Self {
10624                    focus_handle: cx.focus_handle(),
10625                }
10626            }
10627        }
10628
10629        // View
10630        struct TestIpynbItemView {
10631            focus_handle: FocusHandle,
10632        }
10633        // Model
10634        struct TestIpynbItem {}
10635
10636        impl project::ProjectItem for TestIpynbItem {
10637            fn try_open(
10638                _project: &Entity<Project>,
10639                path: &ProjectPath,
10640                cx: &mut App,
10641            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10642                if path.path.extension().unwrap() == "ipynb" {
10643                    Some(cx.spawn(async move |cx| cx.new(|_| TestIpynbItem {})))
10644                } else {
10645                    None
10646                }
10647            }
10648
10649            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10650                None
10651            }
10652
10653            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10654                None
10655            }
10656
10657            fn is_dirty(&self) -> bool {
10658                false
10659            }
10660        }
10661
10662        impl Item for TestIpynbItemView {
10663            type Event = ();
10664            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10665                "".into()
10666            }
10667        }
10668        impl EventEmitter<()> for TestIpynbItemView {}
10669        impl Focusable for TestIpynbItemView {
10670            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10671                self.focus_handle.clone()
10672            }
10673        }
10674
10675        impl Render for TestIpynbItemView {
10676            fn render(
10677                &mut self,
10678                _window: &mut Window,
10679                _cx: &mut Context<Self>,
10680            ) -> impl IntoElement {
10681                Empty
10682            }
10683        }
10684
10685        impl ProjectItem for TestIpynbItemView {
10686            type Item = TestIpynbItem;
10687
10688            fn for_project_item(
10689                _project: Entity<Project>,
10690                _pane: Option<&Pane>,
10691                _item: Entity<Self::Item>,
10692                _: &mut Window,
10693                cx: &mut Context<Self>,
10694            ) -> Self
10695            where
10696                Self: Sized,
10697            {
10698                Self {
10699                    focus_handle: cx.focus_handle(),
10700                }
10701            }
10702        }
10703
10704        struct TestAlternatePngItemView {
10705            focus_handle: FocusHandle,
10706        }
10707
10708        impl Item for TestAlternatePngItemView {
10709            type Event = ();
10710            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10711                "".into()
10712            }
10713        }
10714
10715        impl EventEmitter<()> for TestAlternatePngItemView {}
10716        impl Focusable for TestAlternatePngItemView {
10717            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10718                self.focus_handle.clone()
10719            }
10720        }
10721
10722        impl Render for TestAlternatePngItemView {
10723            fn render(
10724                &mut self,
10725                _window: &mut Window,
10726                _cx: &mut Context<Self>,
10727            ) -> impl IntoElement {
10728                Empty
10729            }
10730        }
10731
10732        impl ProjectItem for TestAlternatePngItemView {
10733            type Item = TestPngItem;
10734
10735            fn for_project_item(
10736                _project: Entity<Project>,
10737                _pane: Option<&Pane>,
10738                _item: Entity<Self::Item>,
10739                _: &mut Window,
10740                cx: &mut Context<Self>,
10741            ) -> Self
10742            where
10743                Self: Sized,
10744            {
10745                Self {
10746                    focus_handle: cx.focus_handle(),
10747                }
10748            }
10749        }
10750
10751        #[gpui::test]
10752        async fn test_register_project_item(cx: &mut TestAppContext) {
10753            init_test(cx);
10754
10755            cx.update(|cx| {
10756                register_project_item::<TestPngItemView>(cx);
10757                register_project_item::<TestIpynbItemView>(cx);
10758            });
10759
10760            let fs = FakeFs::new(cx.executor());
10761            fs.insert_tree(
10762                "/root1",
10763                json!({
10764                    "one.png": "BINARYDATAHERE",
10765                    "two.ipynb": "{ totally a notebook }",
10766                    "three.txt": "editing text, sure why not?"
10767                }),
10768            )
10769            .await;
10770
10771            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10772            let (workspace, cx) =
10773                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10774
10775            let worktree_id = project.update(cx, |project, cx| {
10776                project.worktrees(cx).next().unwrap().read(cx).id()
10777            });
10778
10779            let handle = workspace
10780                .update_in(cx, |workspace, window, cx| {
10781                    let project_path = (worktree_id, rel_path("one.png"));
10782                    workspace.open_path(project_path, None, true, window, cx)
10783                })
10784                .await
10785                .unwrap();
10786
10787            // Now we can check if the handle we got back errored or not
10788            assert_eq!(
10789                handle.to_any().entity_type(),
10790                TypeId::of::<TestPngItemView>()
10791            );
10792
10793            let handle = workspace
10794                .update_in(cx, |workspace, window, cx| {
10795                    let project_path = (worktree_id, rel_path("two.ipynb"));
10796                    workspace.open_path(project_path, None, true, window, cx)
10797                })
10798                .await
10799                .unwrap();
10800
10801            assert_eq!(
10802                handle.to_any().entity_type(),
10803                TypeId::of::<TestIpynbItemView>()
10804            );
10805
10806            let handle = workspace
10807                .update_in(cx, |workspace, window, cx| {
10808                    let project_path = (worktree_id, rel_path("three.txt"));
10809                    workspace.open_path(project_path, None, true, window, cx)
10810                })
10811                .await;
10812            assert!(handle.is_err());
10813        }
10814
10815        #[gpui::test]
10816        async fn test_register_project_item_two_enter_one_leaves(cx: &mut TestAppContext) {
10817            init_test(cx);
10818
10819            cx.update(|cx| {
10820                register_project_item::<TestPngItemView>(cx);
10821                register_project_item::<TestAlternatePngItemView>(cx);
10822            });
10823
10824            let fs = FakeFs::new(cx.executor());
10825            fs.insert_tree(
10826                "/root1",
10827                json!({
10828                    "one.png": "BINARYDATAHERE",
10829                    "two.ipynb": "{ totally a notebook }",
10830                    "three.txt": "editing text, sure why not?"
10831                }),
10832            )
10833            .await;
10834            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10835            let (workspace, cx) =
10836                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10837            let worktree_id = project.update(cx, |project, cx| {
10838                project.worktrees(cx).next().unwrap().read(cx).id()
10839            });
10840
10841            let handle = workspace
10842                .update_in(cx, |workspace, window, cx| {
10843                    let project_path = (worktree_id, rel_path("one.png"));
10844                    workspace.open_path(project_path, None, true, window, cx)
10845                })
10846                .await
10847                .unwrap();
10848
10849            // This _must_ be the second item registered
10850            assert_eq!(
10851                handle.to_any().entity_type(),
10852                TypeId::of::<TestAlternatePngItemView>()
10853            );
10854
10855            let handle = workspace
10856                .update_in(cx, |workspace, window, cx| {
10857                    let project_path = (worktree_id, rel_path("three.txt"));
10858                    workspace.open_path(project_path, None, true, window, cx)
10859                })
10860                .await;
10861            assert!(handle.is_err());
10862        }
10863    }
10864
10865    #[gpui::test]
10866    async fn test_status_bar_visibility(cx: &mut TestAppContext) {
10867        init_test(cx);
10868
10869        let fs = FakeFs::new(cx.executor());
10870        let project = Project::test(fs, [], cx).await;
10871        let (workspace, _cx) =
10872            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10873
10874        // Test with status bar shown (default)
10875        workspace.read_with(cx, |workspace, cx| {
10876            let visible = workspace.status_bar_visible(cx);
10877            assert!(visible, "Status bar should be visible by default");
10878        });
10879
10880        // Test with status bar hidden
10881        cx.update_global(|store: &mut SettingsStore, cx| {
10882            store.update_user_settings(cx, |settings| {
10883                settings.status_bar.get_or_insert_default().show = Some(false);
10884            });
10885        });
10886
10887        workspace.read_with(cx, |workspace, cx| {
10888            let visible = workspace.status_bar_visible(cx);
10889            assert!(!visible, "Status bar should be hidden when show is false");
10890        });
10891
10892        // Test with status bar shown explicitly
10893        cx.update_global(|store: &mut SettingsStore, cx| {
10894            store.update_user_settings(cx, |settings| {
10895                settings.status_bar.get_or_insert_default().show = Some(true);
10896            });
10897        });
10898
10899        workspace.read_with(cx, |workspace, cx| {
10900            let visible = workspace.status_bar_visible(cx);
10901            assert!(visible, "Status bar should be visible when show is true");
10902        });
10903    }
10904
10905    fn pane_items_paths(pane: &Entity<Pane>, cx: &App) -> Vec<String> {
10906        pane.read(cx)
10907            .items()
10908            .flat_map(|item| {
10909                item.project_paths(cx)
10910                    .into_iter()
10911                    .map(|path| path.path.display(PathStyle::local()).into_owned())
10912            })
10913            .collect()
10914    }
10915
10916    pub fn init_test(cx: &mut TestAppContext) {
10917        cx.update(|cx| {
10918            let settings_store = SettingsStore::test(cx);
10919            cx.set_global(settings_store);
10920            theme::init(theme::LoadThemes::JustBase, cx);
10921            language::init(cx);
10922            crate::init_settings(cx);
10923            Project::init_settings(cx);
10924        });
10925    }
10926
10927    fn dirty_project_item(id: u64, path: &str, cx: &mut App) -> Entity<TestProjectItem> {
10928        let item = TestProjectItem::new(id, path, cx);
10929        item.update(cx, |item, _| {
10930            item.is_dirty = true;
10931        });
10932        item
10933    }
10934}