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                .detach();
 3632        }
 3633    }
 3634
 3635    fn move_item_to_pane_at_index(
 3636        &mut self,
 3637        action: &MoveItemToPane,
 3638        window: &mut Window,
 3639        cx: &mut Context<Self>,
 3640    ) {
 3641        let panes = self.center.panes();
 3642        let destination = match panes.get(action.destination) {
 3643            Some(&destination) => destination.clone(),
 3644            None => {
 3645                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3646                    return;
 3647                }
 3648                let direction = SplitDirection::Right;
 3649                let split_off_pane = self
 3650                    .find_pane_in_direction(direction, cx)
 3651                    .unwrap_or_else(|| self.active_pane.clone());
 3652                let new_pane = self.add_pane(window, cx);
 3653                if self
 3654                    .center
 3655                    .split(&split_off_pane, &new_pane, direction)
 3656                    .log_err()
 3657                    .is_none()
 3658                {
 3659                    return;
 3660                };
 3661                new_pane
 3662            }
 3663        };
 3664
 3665        if action.clone {
 3666            clone_active_item(
 3667                self.database_id(),
 3668                &self.active_pane,
 3669                &destination,
 3670                action.focus,
 3671                window,
 3672                cx,
 3673            )
 3674        } else {
 3675            move_active_item(
 3676                &self.active_pane,
 3677                &destination,
 3678                action.focus,
 3679                true,
 3680                window,
 3681                cx,
 3682            )
 3683        }
 3684    }
 3685
 3686    pub fn activate_next_pane(&mut self, window: &mut Window, cx: &mut App) {
 3687        let panes = self.center.panes();
 3688        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3689            let next_ix = (ix + 1) % panes.len();
 3690            let next_pane = panes[next_ix].clone();
 3691            window.focus(&next_pane.focus_handle(cx));
 3692        }
 3693    }
 3694
 3695    pub fn activate_previous_pane(&mut self, window: &mut Window, cx: &mut App) {
 3696        let panes = self.center.panes();
 3697        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3698            let prev_ix = cmp::min(ix.wrapping_sub(1), panes.len() - 1);
 3699            let prev_pane = panes[prev_ix].clone();
 3700            window.focus(&prev_pane.focus_handle(cx));
 3701        }
 3702    }
 3703
 3704    pub fn activate_pane_in_direction(
 3705        &mut self,
 3706        direction: SplitDirection,
 3707        window: &mut Window,
 3708        cx: &mut App,
 3709    ) {
 3710        use ActivateInDirectionTarget as Target;
 3711        enum Origin {
 3712            LeftDock,
 3713            RightDock,
 3714            BottomDock,
 3715            Center,
 3716        }
 3717
 3718        let origin: Origin = [
 3719            (&self.left_dock, Origin::LeftDock),
 3720            (&self.right_dock, Origin::RightDock),
 3721            (&self.bottom_dock, Origin::BottomDock),
 3722        ]
 3723        .into_iter()
 3724        .find_map(|(dock, origin)| {
 3725            if dock.focus_handle(cx).contains_focused(window, cx) && dock.read(cx).is_open() {
 3726                Some(origin)
 3727            } else {
 3728                None
 3729            }
 3730        })
 3731        .unwrap_or(Origin::Center);
 3732
 3733        let get_last_active_pane = || {
 3734            let pane = self
 3735                .last_active_center_pane
 3736                .clone()
 3737                .unwrap_or_else(|| {
 3738                    self.panes
 3739                        .first()
 3740                        .expect("There must be an active pane")
 3741                        .downgrade()
 3742                })
 3743                .upgrade()?;
 3744            (pane.read(cx).items_len() != 0).then_some(pane)
 3745        };
 3746
 3747        let try_dock =
 3748            |dock: &Entity<Dock>| dock.read(cx).is_open().then(|| Target::Dock(dock.clone()));
 3749
 3750        let target = match (origin, direction) {
 3751            // We're in the center, so we first try to go to a different pane,
 3752            // otherwise try to go to a dock.
 3753            (Origin::Center, direction) => {
 3754                if let Some(pane) = self.find_pane_in_direction(direction, cx) {
 3755                    Some(Target::Pane(pane))
 3756                } else {
 3757                    match direction {
 3758                        SplitDirection::Up => None,
 3759                        SplitDirection::Down => try_dock(&self.bottom_dock),
 3760                        SplitDirection::Left => try_dock(&self.left_dock),
 3761                        SplitDirection::Right => try_dock(&self.right_dock),
 3762                    }
 3763                }
 3764            }
 3765
 3766            (Origin::LeftDock, SplitDirection::Right) => {
 3767                if let Some(last_active_pane) = get_last_active_pane() {
 3768                    Some(Target::Pane(last_active_pane))
 3769                } else {
 3770                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.right_dock))
 3771                }
 3772            }
 3773
 3774            (Origin::LeftDock, SplitDirection::Down)
 3775            | (Origin::RightDock, SplitDirection::Down) => try_dock(&self.bottom_dock),
 3776
 3777            (Origin::BottomDock, SplitDirection::Up) => get_last_active_pane().map(Target::Pane),
 3778            (Origin::BottomDock, SplitDirection::Left) => try_dock(&self.left_dock),
 3779            (Origin::BottomDock, SplitDirection::Right) => try_dock(&self.right_dock),
 3780
 3781            (Origin::RightDock, SplitDirection::Left) => {
 3782                if let Some(last_active_pane) = get_last_active_pane() {
 3783                    Some(Target::Pane(last_active_pane))
 3784                } else {
 3785                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.left_dock))
 3786                }
 3787            }
 3788
 3789            _ => None,
 3790        };
 3791
 3792        match target {
 3793            Some(ActivateInDirectionTarget::Pane(pane)) => {
 3794                let pane = pane.read(cx);
 3795                if let Some(item) = pane.active_item() {
 3796                    item.item_focus_handle(cx).focus(window);
 3797                } else {
 3798                    log::error!(
 3799                        "Could not find a focus target when in switching focus in {direction} direction for a pane",
 3800                    );
 3801                }
 3802            }
 3803            Some(ActivateInDirectionTarget::Dock(dock)) => {
 3804                // Defer this to avoid a panic when the dock's active panel is already on the stack.
 3805                window.defer(cx, move |window, cx| {
 3806                    let dock = dock.read(cx);
 3807                    if let Some(panel) = dock.active_panel() {
 3808                        panel.panel_focus_handle(cx).focus(window);
 3809                    } else {
 3810                        log::error!("Could not find a focus target when in switching focus in {direction} direction for a {:?} dock", dock.position());
 3811                    }
 3812                })
 3813            }
 3814            None => {}
 3815        }
 3816    }
 3817
 3818    pub fn move_item_to_pane_in_direction(
 3819        &mut self,
 3820        action: &MoveItemToPaneInDirection,
 3821        window: &mut Window,
 3822        cx: &mut Context<Self>,
 3823    ) {
 3824        let destination = match self.find_pane_in_direction(action.direction, cx) {
 3825            Some(destination) => destination,
 3826            None => {
 3827                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3828                    return;
 3829                }
 3830                let new_pane = self.add_pane(window, cx);
 3831                if self
 3832                    .center
 3833                    .split(&self.active_pane, &new_pane, action.direction)
 3834                    .log_err()
 3835                    .is_none()
 3836                {
 3837                    return;
 3838                };
 3839                new_pane
 3840            }
 3841        };
 3842
 3843        if action.clone {
 3844            clone_active_item(
 3845                self.database_id(),
 3846                &self.active_pane,
 3847                &destination,
 3848                action.focus,
 3849                window,
 3850                cx,
 3851            )
 3852        } else {
 3853            move_active_item(
 3854                &self.active_pane,
 3855                &destination,
 3856                action.focus,
 3857                true,
 3858                window,
 3859                cx,
 3860            );
 3861        }
 3862    }
 3863
 3864    pub fn bounding_box_for_pane(&self, pane: &Entity<Pane>) -> Option<Bounds<Pixels>> {
 3865        self.center.bounding_box_for_pane(pane)
 3866    }
 3867
 3868    pub fn find_pane_in_direction(
 3869        &mut self,
 3870        direction: SplitDirection,
 3871        cx: &App,
 3872    ) -> Option<Entity<Pane>> {
 3873        self.center
 3874            .find_pane_in_direction(&self.active_pane, direction, cx)
 3875            .cloned()
 3876    }
 3877
 3878    pub fn swap_pane_in_direction(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 3879        if let Some(to) = self.find_pane_in_direction(direction, cx) {
 3880            self.center.swap(&self.active_pane, &to);
 3881            cx.notify();
 3882        }
 3883    }
 3884
 3885    pub fn move_pane_to_border(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 3886        if self
 3887            .center
 3888            .move_to_border(&self.active_pane, direction)
 3889            .unwrap()
 3890        {
 3891            cx.notify();
 3892        }
 3893    }
 3894
 3895    pub fn resize_pane(
 3896        &mut self,
 3897        axis: gpui::Axis,
 3898        amount: Pixels,
 3899        window: &mut Window,
 3900        cx: &mut Context<Self>,
 3901    ) {
 3902        let docks = self.all_docks();
 3903        let active_dock = docks
 3904            .into_iter()
 3905            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 3906
 3907        if let Some(dock) = active_dock {
 3908            let Some(panel_size) = dock.read(cx).active_panel_size(window, cx) else {
 3909                return;
 3910            };
 3911            match dock.read(cx).position() {
 3912                DockPosition::Left => self.resize_left_dock(panel_size + amount, window, cx),
 3913                DockPosition::Bottom => self.resize_bottom_dock(panel_size + amount, window, cx),
 3914                DockPosition::Right => self.resize_right_dock(panel_size + amount, window, cx),
 3915            }
 3916        } else {
 3917            self.center
 3918                .resize(&self.active_pane, axis, amount, &self.bounds);
 3919        }
 3920        cx.notify();
 3921    }
 3922
 3923    pub fn reset_pane_sizes(&mut self, cx: &mut Context<Self>) {
 3924        self.center.reset_pane_sizes();
 3925        cx.notify();
 3926    }
 3927
 3928    fn handle_pane_focused(
 3929        &mut self,
 3930        pane: Entity<Pane>,
 3931        window: &mut Window,
 3932        cx: &mut Context<Self>,
 3933    ) {
 3934        // This is explicitly hoisted out of the following check for pane identity as
 3935        // terminal panel panes are not registered as a center panes.
 3936        self.status_bar.update(cx, |status_bar, cx| {
 3937            status_bar.set_active_pane(&pane, window, cx);
 3938        });
 3939        if self.active_pane != pane {
 3940            self.set_active_pane(&pane, window, cx);
 3941        }
 3942
 3943        if self.last_active_center_pane.is_none() {
 3944            self.last_active_center_pane = Some(pane.downgrade());
 3945        }
 3946
 3947        self.dismiss_zoomed_items_to_reveal(None, window, cx);
 3948        if pane.read(cx).is_zoomed() {
 3949            self.zoomed = Some(pane.downgrade().into());
 3950        } else {
 3951            self.zoomed = None;
 3952        }
 3953        self.zoomed_position = None;
 3954        cx.emit(Event::ZoomChanged);
 3955        self.update_active_view_for_followers(window, cx);
 3956        pane.update(cx, |pane, _| {
 3957            pane.track_alternate_file_items();
 3958        });
 3959
 3960        cx.notify();
 3961    }
 3962
 3963    fn set_active_pane(
 3964        &mut self,
 3965        pane: &Entity<Pane>,
 3966        window: &mut Window,
 3967        cx: &mut Context<Self>,
 3968    ) {
 3969        self.active_pane = pane.clone();
 3970        self.active_item_path_changed(window, cx);
 3971        self.last_active_center_pane = Some(pane.downgrade());
 3972    }
 3973
 3974    fn handle_panel_focused(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3975        self.update_active_view_for_followers(window, cx);
 3976    }
 3977
 3978    fn handle_pane_event(
 3979        &mut self,
 3980        pane: &Entity<Pane>,
 3981        event: &pane::Event,
 3982        window: &mut Window,
 3983        cx: &mut Context<Self>,
 3984    ) {
 3985        let mut serialize_workspace = true;
 3986        match event {
 3987            pane::Event::AddItem { item } => {
 3988                item.added_to_pane(self, pane.clone(), window, cx);
 3989                cx.emit(Event::ItemAdded {
 3990                    item: item.boxed_clone(),
 3991                });
 3992            }
 3993            pane::Event::Split {
 3994                direction,
 3995                clone_active_item,
 3996            } => {
 3997                if *clone_active_item {
 3998                    self.split_and_clone(pane.clone(), *direction, window, cx)
 3999                        .detach();
 4000                } else {
 4001                    self.split_and_move(pane.clone(), *direction, window, cx);
 4002                }
 4003            }
 4004            pane::Event::JoinIntoNext => {
 4005                self.join_pane_into_next(pane.clone(), window, cx);
 4006            }
 4007            pane::Event::JoinAll => {
 4008                self.join_all_panes(window, cx);
 4009            }
 4010            pane::Event::Remove { focus_on_pane } => {
 4011                self.remove_pane(pane.clone(), focus_on_pane.clone(), window, cx);
 4012            }
 4013            pane::Event::ActivateItem {
 4014                local,
 4015                focus_changed,
 4016            } => {
 4017                window.invalidate_character_coordinates();
 4018
 4019                pane.update(cx, |pane, _| {
 4020                    pane.track_alternate_file_items();
 4021                });
 4022                if *local {
 4023                    self.unfollow_in_pane(pane, window, cx);
 4024                }
 4025                serialize_workspace = *focus_changed || pane != self.active_pane();
 4026                if pane == self.active_pane() {
 4027                    self.active_item_path_changed(window, cx);
 4028                    self.update_active_view_for_followers(window, cx);
 4029                } else if *local {
 4030                    self.set_active_pane(pane, window, cx);
 4031                }
 4032            }
 4033            pane::Event::UserSavedItem { item, save_intent } => {
 4034                cx.emit(Event::UserSavedItem {
 4035                    pane: pane.downgrade(),
 4036                    item: item.boxed_clone(),
 4037                    save_intent: *save_intent,
 4038                });
 4039                serialize_workspace = false;
 4040            }
 4041            pane::Event::ChangeItemTitle => {
 4042                if *pane == self.active_pane {
 4043                    self.active_item_path_changed(window, cx);
 4044                }
 4045                serialize_workspace = false;
 4046            }
 4047            pane::Event::RemovedItem { item } => {
 4048                cx.emit(Event::ActiveItemChanged);
 4049                self.update_window_edited(window, cx);
 4050                if let hash_map::Entry::Occupied(entry) = self.panes_by_item.entry(item.item_id())
 4051                    && entry.get().entity_id() == pane.entity_id()
 4052                {
 4053                    entry.remove();
 4054                }
 4055                cx.emit(Event::ItemRemoved {
 4056                    item_id: item.item_id(),
 4057                });
 4058            }
 4059            pane::Event::Focus => {
 4060                window.invalidate_character_coordinates();
 4061                self.handle_pane_focused(pane.clone(), window, cx);
 4062            }
 4063            pane::Event::ZoomIn => {
 4064                if *pane == self.active_pane {
 4065                    pane.update(cx, |pane, cx| pane.set_zoomed(true, cx));
 4066                    if pane.read(cx).has_focus(window, cx) {
 4067                        self.zoomed = Some(pane.downgrade().into());
 4068                        self.zoomed_position = None;
 4069                        cx.emit(Event::ZoomChanged);
 4070                    }
 4071                    cx.notify();
 4072                }
 4073            }
 4074            pane::Event::ZoomOut => {
 4075                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 4076                if self.zoomed_position.is_none() {
 4077                    self.zoomed = None;
 4078                    cx.emit(Event::ZoomChanged);
 4079                }
 4080                cx.notify();
 4081            }
 4082            pane::Event::ItemPinned | pane::Event::ItemUnpinned => {}
 4083        }
 4084
 4085        if serialize_workspace {
 4086            self.serialize_workspace(window, cx);
 4087        }
 4088    }
 4089
 4090    pub fn unfollow_in_pane(
 4091        &mut self,
 4092        pane: &Entity<Pane>,
 4093        window: &mut Window,
 4094        cx: &mut Context<Workspace>,
 4095    ) -> Option<CollaboratorId> {
 4096        let leader_id = self.leader_for_pane(pane)?;
 4097        self.unfollow(leader_id, window, cx);
 4098        Some(leader_id)
 4099    }
 4100
 4101    pub fn split_pane(
 4102        &mut self,
 4103        pane_to_split: Entity<Pane>,
 4104        split_direction: SplitDirection,
 4105        window: &mut Window,
 4106        cx: &mut Context<Self>,
 4107    ) -> Entity<Pane> {
 4108        let new_pane = self.add_pane(window, cx);
 4109        self.center
 4110            .split(&pane_to_split, &new_pane, split_direction)
 4111            .unwrap();
 4112        cx.notify();
 4113        new_pane
 4114    }
 4115
 4116    pub fn split_and_move(
 4117        &mut self,
 4118        pane: Entity<Pane>,
 4119        direction: SplitDirection,
 4120        window: &mut Window,
 4121        cx: &mut Context<Self>,
 4122    ) {
 4123        let Some(item) = pane.update(cx, |pane, cx| pane.take_active_item(window, cx)) else {
 4124            return;
 4125        };
 4126        let new_pane = self.add_pane(window, cx);
 4127        new_pane.update(cx, |pane, cx| {
 4128            pane.add_item(item, true, true, None, window, cx)
 4129        });
 4130        self.center.split(&pane, &new_pane, direction).unwrap();
 4131        cx.notify();
 4132    }
 4133
 4134    pub fn split_and_clone(
 4135        &mut self,
 4136        pane: Entity<Pane>,
 4137        direction: SplitDirection,
 4138        window: &mut Window,
 4139        cx: &mut Context<Self>,
 4140    ) -> Task<Option<Entity<Pane>>> {
 4141        let Some(item) = pane.read(cx).active_item() else {
 4142            return Task::ready(None);
 4143        };
 4144        let task = item.clone_on_split(self.database_id(), window, cx);
 4145        cx.spawn_in(window, async move |this, cx| {
 4146            if let Some(clone) = task.await {
 4147                this.update_in(cx, |this, window, cx| {
 4148                    let new_pane = this.add_pane(window, cx);
 4149                    new_pane.update(cx, |pane, cx| {
 4150                        pane.add_item(clone, true, true, None, window, cx)
 4151                    });
 4152                    this.center.split(&pane, &new_pane, direction).unwrap();
 4153                    cx.notify();
 4154                    new_pane
 4155                })
 4156                .ok()
 4157            } else {
 4158                None
 4159            }
 4160        })
 4161    }
 4162
 4163    pub fn join_all_panes(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4164        let active_item = self.active_pane.read(cx).active_item();
 4165        for pane in &self.panes {
 4166            join_pane_into_active(&self.active_pane, pane, window, cx);
 4167        }
 4168        if let Some(active_item) = active_item {
 4169            self.activate_item(active_item.as_ref(), true, true, window, cx);
 4170        }
 4171        cx.notify();
 4172    }
 4173
 4174    pub fn join_pane_into_next(
 4175        &mut self,
 4176        pane: Entity<Pane>,
 4177        window: &mut Window,
 4178        cx: &mut Context<Self>,
 4179    ) {
 4180        let next_pane = self
 4181            .find_pane_in_direction(SplitDirection::Right, cx)
 4182            .or_else(|| self.find_pane_in_direction(SplitDirection::Down, cx))
 4183            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4184            .or_else(|| self.find_pane_in_direction(SplitDirection::Up, cx));
 4185        let Some(next_pane) = next_pane else {
 4186            return;
 4187        };
 4188        move_all_items(&pane, &next_pane, window, cx);
 4189        cx.notify();
 4190    }
 4191
 4192    fn remove_pane(
 4193        &mut self,
 4194        pane: Entity<Pane>,
 4195        focus_on: Option<Entity<Pane>>,
 4196        window: &mut Window,
 4197        cx: &mut Context<Self>,
 4198    ) {
 4199        if self.center.remove(&pane).unwrap() {
 4200            self.force_remove_pane(&pane, &focus_on, window, cx);
 4201            self.unfollow_in_pane(&pane, window, cx);
 4202            self.last_leaders_by_pane.remove(&pane.downgrade());
 4203            for removed_item in pane.read(cx).items() {
 4204                self.panes_by_item.remove(&removed_item.item_id());
 4205            }
 4206
 4207            cx.notify();
 4208        } else {
 4209            self.active_item_path_changed(window, cx);
 4210        }
 4211        cx.emit(Event::PaneRemoved);
 4212    }
 4213
 4214    pub fn panes(&self) -> &[Entity<Pane>] {
 4215        &self.panes
 4216    }
 4217
 4218    pub fn active_pane(&self) -> &Entity<Pane> {
 4219        &self.active_pane
 4220    }
 4221
 4222    pub fn focused_pane(&self, window: &Window, cx: &App) -> Entity<Pane> {
 4223        for dock in self.all_docks() {
 4224            if dock.focus_handle(cx).contains_focused(window, cx)
 4225                && let Some(pane) = dock
 4226                    .read(cx)
 4227                    .active_panel()
 4228                    .and_then(|panel| panel.pane(cx))
 4229            {
 4230                return pane;
 4231            }
 4232        }
 4233        self.active_pane().clone()
 4234    }
 4235
 4236    pub fn adjacent_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 4237        self.find_pane_in_direction(SplitDirection::Right, cx)
 4238            .unwrap_or_else(|| {
 4239                self.split_pane(self.active_pane.clone(), SplitDirection::Right, window, cx)
 4240            })
 4241    }
 4242
 4243    pub fn pane_for(&self, handle: &dyn ItemHandle) -> Option<Entity<Pane>> {
 4244        let weak_pane = self.panes_by_item.get(&handle.item_id())?;
 4245        weak_pane.upgrade()
 4246    }
 4247
 4248    fn collaborator_left(&mut self, peer_id: PeerId, window: &mut Window, cx: &mut Context<Self>) {
 4249        self.follower_states.retain(|leader_id, state| {
 4250            if *leader_id == CollaboratorId::PeerId(peer_id) {
 4251                for item in state.items_by_leader_view_id.values() {
 4252                    item.view.set_leader_id(None, window, cx);
 4253                }
 4254                false
 4255            } else {
 4256                true
 4257            }
 4258        });
 4259        cx.notify();
 4260    }
 4261
 4262    pub fn start_following(
 4263        &mut self,
 4264        leader_id: impl Into<CollaboratorId>,
 4265        window: &mut Window,
 4266        cx: &mut Context<Self>,
 4267    ) -> Option<Task<Result<()>>> {
 4268        let leader_id = leader_id.into();
 4269        let pane = self.active_pane().clone();
 4270
 4271        self.last_leaders_by_pane
 4272            .insert(pane.downgrade(), leader_id);
 4273        self.unfollow(leader_id, window, cx);
 4274        self.unfollow_in_pane(&pane, window, cx);
 4275        self.follower_states.insert(
 4276            leader_id,
 4277            FollowerState {
 4278                center_pane: pane.clone(),
 4279                dock_pane: None,
 4280                active_view_id: None,
 4281                items_by_leader_view_id: Default::default(),
 4282            },
 4283        );
 4284        cx.notify();
 4285
 4286        match leader_id {
 4287            CollaboratorId::PeerId(leader_peer_id) => {
 4288                let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4289                let project_id = self.project.read(cx).remote_id();
 4290                let request = self.app_state.client.request(proto::Follow {
 4291                    room_id,
 4292                    project_id,
 4293                    leader_id: Some(leader_peer_id),
 4294                });
 4295
 4296                Some(cx.spawn_in(window, async move |this, cx| {
 4297                    let response = request.await?;
 4298                    this.update(cx, |this, _| {
 4299                        let state = this
 4300                            .follower_states
 4301                            .get_mut(&leader_id)
 4302                            .context("following interrupted")?;
 4303                        state.active_view_id = response
 4304                            .active_view
 4305                            .as_ref()
 4306                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4307                        anyhow::Ok(())
 4308                    })??;
 4309                    if let Some(view) = response.active_view {
 4310                        Self::add_view_from_leader(this.clone(), leader_peer_id, &view, cx).await?;
 4311                    }
 4312                    this.update_in(cx, |this, window, cx| {
 4313                        this.leader_updated(leader_id, window, cx)
 4314                    })?;
 4315                    Ok(())
 4316                }))
 4317            }
 4318            CollaboratorId::Agent => {
 4319                self.leader_updated(leader_id, window, cx)?;
 4320                Some(Task::ready(Ok(())))
 4321            }
 4322        }
 4323    }
 4324
 4325    pub fn follow_next_collaborator(
 4326        &mut self,
 4327        _: &FollowNextCollaborator,
 4328        window: &mut Window,
 4329        cx: &mut Context<Self>,
 4330    ) {
 4331        let collaborators = self.project.read(cx).collaborators();
 4332        let next_leader_id = if let Some(leader_id) = self.leader_for_pane(&self.active_pane) {
 4333            let mut collaborators = collaborators.keys().copied();
 4334            for peer_id in collaborators.by_ref() {
 4335                if CollaboratorId::PeerId(peer_id) == leader_id {
 4336                    break;
 4337                }
 4338            }
 4339            collaborators.next().map(CollaboratorId::PeerId)
 4340        } else if let Some(last_leader_id) =
 4341            self.last_leaders_by_pane.get(&self.active_pane.downgrade())
 4342        {
 4343            match last_leader_id {
 4344                CollaboratorId::PeerId(peer_id) => {
 4345                    if collaborators.contains_key(peer_id) {
 4346                        Some(*last_leader_id)
 4347                    } else {
 4348                        None
 4349                    }
 4350                }
 4351                CollaboratorId::Agent => Some(CollaboratorId::Agent),
 4352            }
 4353        } else {
 4354            None
 4355        };
 4356
 4357        let pane = self.active_pane.clone();
 4358        let Some(leader_id) = next_leader_id.or_else(|| {
 4359            Some(CollaboratorId::PeerId(
 4360                collaborators.keys().copied().next()?,
 4361            ))
 4362        }) else {
 4363            return;
 4364        };
 4365        if self.unfollow_in_pane(&pane, window, cx) == Some(leader_id) {
 4366            return;
 4367        }
 4368        if let Some(task) = self.start_following(leader_id, window, cx) {
 4369            task.detach_and_log_err(cx)
 4370        }
 4371    }
 4372
 4373    pub fn follow(
 4374        &mut self,
 4375        leader_id: impl Into<CollaboratorId>,
 4376        window: &mut Window,
 4377        cx: &mut Context<Self>,
 4378    ) {
 4379        let leader_id = leader_id.into();
 4380
 4381        if let CollaboratorId::PeerId(peer_id) = leader_id {
 4382            let Some(room) = ActiveCall::global(cx).read(cx).room() else {
 4383                return;
 4384            };
 4385            let room = room.read(cx);
 4386            let Some(remote_participant) = room.remote_participant_for_peer_id(peer_id) else {
 4387                return;
 4388            };
 4389
 4390            let project = self.project.read(cx);
 4391
 4392            let other_project_id = match remote_participant.location {
 4393                call::ParticipantLocation::External => None,
 4394                call::ParticipantLocation::UnsharedProject => None,
 4395                call::ParticipantLocation::SharedProject { project_id } => {
 4396                    if Some(project_id) == project.remote_id() {
 4397                        None
 4398                    } else {
 4399                        Some(project_id)
 4400                    }
 4401                }
 4402            };
 4403
 4404            // if they are active in another project, follow there.
 4405            if let Some(project_id) = other_project_id {
 4406                let app_state = self.app_state.clone();
 4407                crate::join_in_room_project(project_id, remote_participant.user.id, app_state, cx)
 4408                    .detach_and_log_err(cx);
 4409            }
 4410        }
 4411
 4412        // if you're already following, find the right pane and focus it.
 4413        if let Some(follower_state) = self.follower_states.get(&leader_id) {
 4414            window.focus(&follower_state.pane().focus_handle(cx));
 4415
 4416            return;
 4417        }
 4418
 4419        // Otherwise, follow.
 4420        if let Some(task) = self.start_following(leader_id, window, cx) {
 4421            task.detach_and_log_err(cx)
 4422        }
 4423    }
 4424
 4425    pub fn unfollow(
 4426        &mut self,
 4427        leader_id: impl Into<CollaboratorId>,
 4428        window: &mut Window,
 4429        cx: &mut Context<Self>,
 4430    ) -> Option<()> {
 4431        cx.notify();
 4432
 4433        let leader_id = leader_id.into();
 4434        let state = self.follower_states.remove(&leader_id)?;
 4435        for (_, item) in state.items_by_leader_view_id {
 4436            item.view.set_leader_id(None, window, cx);
 4437        }
 4438
 4439        if let CollaboratorId::PeerId(leader_peer_id) = leader_id {
 4440            let project_id = self.project.read(cx).remote_id();
 4441            let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4442            self.app_state
 4443                .client
 4444                .send(proto::Unfollow {
 4445                    room_id,
 4446                    project_id,
 4447                    leader_id: Some(leader_peer_id),
 4448                })
 4449                .log_err();
 4450        }
 4451
 4452        Some(())
 4453    }
 4454
 4455    pub fn is_being_followed(&self, id: impl Into<CollaboratorId>) -> bool {
 4456        self.follower_states.contains_key(&id.into())
 4457    }
 4458
 4459    fn active_item_path_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4460        cx.emit(Event::ActiveItemChanged);
 4461        let active_entry = self.active_project_path(cx);
 4462        self.project.update(cx, |project, cx| {
 4463            project.set_active_path(active_entry.clone(), cx)
 4464        });
 4465
 4466        if let Some(project_path) = &active_entry {
 4467            let git_store_entity = self.project.read(cx).git_store().clone();
 4468            git_store_entity.update(cx, |git_store, cx| {
 4469                git_store.set_active_repo_for_path(project_path, cx);
 4470            });
 4471        }
 4472
 4473        self.update_window_title(window, cx);
 4474    }
 4475
 4476    fn update_window_title(&mut self, window: &mut Window, cx: &mut App) {
 4477        let project = self.project().read(cx);
 4478        let mut title = String::new();
 4479
 4480        for (i, worktree) in project.visible_worktrees(cx).enumerate() {
 4481            let name = {
 4482                let settings_location = SettingsLocation {
 4483                    worktree_id: worktree.read(cx).id(),
 4484                    path: RelPath::empty(),
 4485                };
 4486
 4487                let settings = WorktreeSettings::get(Some(settings_location), cx);
 4488                match &settings.project_name {
 4489                    Some(name) => name.as_str(),
 4490                    None => worktree.read(cx).root_name_str(),
 4491                }
 4492            };
 4493            if i > 0 {
 4494                title.push_str(", ");
 4495            }
 4496            title.push_str(name);
 4497        }
 4498
 4499        if title.is_empty() {
 4500            title = "empty project".to_string();
 4501        }
 4502
 4503        if let Some(path) = self.active_item(cx).and_then(|item| item.project_path(cx)) {
 4504            let filename = path.path.file_name().or_else(|| {
 4505                Some(
 4506                    project
 4507                        .worktree_for_id(path.worktree_id, cx)?
 4508                        .read(cx)
 4509                        .root_name_str(),
 4510                )
 4511            });
 4512
 4513            if let Some(filename) = filename {
 4514                title.push_str("");
 4515                title.push_str(filename.as_ref());
 4516            }
 4517        }
 4518
 4519        if project.is_via_collab() {
 4520            title.push_str("");
 4521        } else if project.is_shared() {
 4522            title.push_str("");
 4523        }
 4524
 4525        if let Some(last_title) = self.last_window_title.as_ref()
 4526            && &title == last_title
 4527        {
 4528            return;
 4529        }
 4530        window.set_window_title(&title);
 4531        SystemWindowTabController::update_tab_title(
 4532            cx,
 4533            window.window_handle().window_id(),
 4534            SharedString::from(&title),
 4535        );
 4536        self.last_window_title = Some(title);
 4537    }
 4538
 4539    fn update_window_edited(&mut self, window: &mut Window, cx: &mut App) {
 4540        let is_edited = !self.project.read(cx).is_disconnected(cx) && !self.dirty_items.is_empty();
 4541        if is_edited != self.window_edited {
 4542            self.window_edited = is_edited;
 4543            window.set_window_edited(self.window_edited)
 4544        }
 4545    }
 4546
 4547    fn update_item_dirty_state(
 4548        &mut self,
 4549        item: &dyn ItemHandle,
 4550        window: &mut Window,
 4551        cx: &mut App,
 4552    ) {
 4553        let is_dirty = item.is_dirty(cx);
 4554        let item_id = item.item_id();
 4555        let was_dirty = self.dirty_items.contains_key(&item_id);
 4556        if is_dirty == was_dirty {
 4557            return;
 4558        }
 4559        if was_dirty {
 4560            self.dirty_items.remove(&item_id);
 4561            self.update_window_edited(window, cx);
 4562            return;
 4563        }
 4564        if let Some(window_handle) = window.window_handle().downcast::<Self>() {
 4565            let s = item.on_release(
 4566                cx,
 4567                Box::new(move |cx| {
 4568                    window_handle
 4569                        .update(cx, |this, window, cx| {
 4570                            this.dirty_items.remove(&item_id);
 4571                            this.update_window_edited(window, cx)
 4572                        })
 4573                        .ok();
 4574                }),
 4575            );
 4576            self.dirty_items.insert(item_id, s);
 4577            self.update_window_edited(window, cx);
 4578        }
 4579    }
 4580
 4581    fn render_notifications(&self, _window: &mut Window, _cx: &mut Context<Self>) -> Option<Div> {
 4582        if self.notifications.is_empty() {
 4583            None
 4584        } else {
 4585            Some(
 4586                div()
 4587                    .absolute()
 4588                    .right_3()
 4589                    .bottom_3()
 4590                    .w_112()
 4591                    .h_full()
 4592                    .flex()
 4593                    .flex_col()
 4594                    .justify_end()
 4595                    .gap_2()
 4596                    .children(
 4597                        self.notifications
 4598                            .iter()
 4599                            .map(|(_, notification)| notification.clone().into_any()),
 4600                    ),
 4601            )
 4602        }
 4603    }
 4604
 4605    // RPC handlers
 4606
 4607    fn active_view_for_follower(
 4608        &self,
 4609        follower_project_id: Option<u64>,
 4610        window: &mut Window,
 4611        cx: &mut Context<Self>,
 4612    ) -> Option<proto::View> {
 4613        let (item, panel_id) = self.active_item_for_followers(window, cx);
 4614        let item = item?;
 4615        let leader_id = self
 4616            .pane_for(&*item)
 4617            .and_then(|pane| self.leader_for_pane(&pane));
 4618        let leader_peer_id = match leader_id {
 4619            Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4620            Some(CollaboratorId::Agent) | None => None,
 4621        };
 4622
 4623        let item_handle = item.to_followable_item_handle(cx)?;
 4624        let id = item_handle.remote_id(&self.app_state.client, window, cx)?;
 4625        let variant = item_handle.to_state_proto(window, cx)?;
 4626
 4627        if item_handle.is_project_item(window, cx)
 4628            && (follower_project_id.is_none()
 4629                || follower_project_id != self.project.read(cx).remote_id())
 4630        {
 4631            return None;
 4632        }
 4633
 4634        Some(proto::View {
 4635            id: id.to_proto(),
 4636            leader_id: leader_peer_id,
 4637            variant: Some(variant),
 4638            panel_id: panel_id.map(|id| id as i32),
 4639        })
 4640    }
 4641
 4642    fn handle_follow(
 4643        &mut self,
 4644        follower_project_id: Option<u64>,
 4645        window: &mut Window,
 4646        cx: &mut Context<Self>,
 4647    ) -> proto::FollowResponse {
 4648        let active_view = self.active_view_for_follower(follower_project_id, window, cx);
 4649
 4650        cx.notify();
 4651        proto::FollowResponse {
 4652            // TODO: Remove after version 0.145.x stabilizes.
 4653            active_view_id: active_view.as_ref().and_then(|view| view.id.clone()),
 4654            views: active_view.iter().cloned().collect(),
 4655            active_view,
 4656        }
 4657    }
 4658
 4659    fn handle_update_followers(
 4660        &mut self,
 4661        leader_id: PeerId,
 4662        message: proto::UpdateFollowers,
 4663        _window: &mut Window,
 4664        _cx: &mut Context<Self>,
 4665    ) {
 4666        self.leader_updates_tx
 4667            .unbounded_send((leader_id, message))
 4668            .ok();
 4669    }
 4670
 4671    async fn process_leader_update(
 4672        this: &WeakEntity<Self>,
 4673        leader_id: PeerId,
 4674        update: proto::UpdateFollowers,
 4675        cx: &mut AsyncWindowContext,
 4676    ) -> Result<()> {
 4677        match update.variant.context("invalid update")? {
 4678            proto::update_followers::Variant::CreateView(view) => {
 4679                let view_id = ViewId::from_proto(view.id.clone().context("invalid view id")?)?;
 4680                let should_add_view = this.update(cx, |this, _| {
 4681                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4682                        anyhow::Ok(!state.items_by_leader_view_id.contains_key(&view_id))
 4683                    } else {
 4684                        anyhow::Ok(false)
 4685                    }
 4686                })??;
 4687
 4688                if should_add_view {
 4689                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4690                }
 4691            }
 4692            proto::update_followers::Variant::UpdateActiveView(update_active_view) => {
 4693                let should_add_view = this.update(cx, |this, _| {
 4694                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4695                        state.active_view_id = update_active_view
 4696                            .view
 4697                            .as_ref()
 4698                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4699
 4700                        if state.active_view_id.is_some_and(|view_id| {
 4701                            !state.items_by_leader_view_id.contains_key(&view_id)
 4702                        }) {
 4703                            anyhow::Ok(true)
 4704                        } else {
 4705                            anyhow::Ok(false)
 4706                        }
 4707                    } else {
 4708                        anyhow::Ok(false)
 4709                    }
 4710                })??;
 4711
 4712                if should_add_view && let Some(view) = update_active_view.view {
 4713                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4714                }
 4715            }
 4716            proto::update_followers::Variant::UpdateView(update_view) => {
 4717                let variant = update_view.variant.context("missing update view variant")?;
 4718                let id = update_view.id.context("missing update view id")?;
 4719                let mut tasks = Vec::new();
 4720                this.update_in(cx, |this, window, cx| {
 4721                    let project = this.project.clone();
 4722                    if let Some(state) = this.follower_states.get(&leader_id.into()) {
 4723                        let view_id = ViewId::from_proto(id.clone())?;
 4724                        if let Some(item) = state.items_by_leader_view_id.get(&view_id) {
 4725                            tasks.push(item.view.apply_update_proto(
 4726                                &project,
 4727                                variant.clone(),
 4728                                window,
 4729                                cx,
 4730                            ));
 4731                        }
 4732                    }
 4733                    anyhow::Ok(())
 4734                })??;
 4735                try_join_all(tasks).await.log_err();
 4736            }
 4737        }
 4738        this.update_in(cx, |this, window, cx| {
 4739            this.leader_updated(leader_id, window, cx)
 4740        })?;
 4741        Ok(())
 4742    }
 4743
 4744    async fn add_view_from_leader(
 4745        this: WeakEntity<Self>,
 4746        leader_id: PeerId,
 4747        view: &proto::View,
 4748        cx: &mut AsyncWindowContext,
 4749    ) -> Result<()> {
 4750        let this = this.upgrade().context("workspace dropped")?;
 4751
 4752        let Some(id) = view.id.clone() else {
 4753            anyhow::bail!("no id for view");
 4754        };
 4755        let id = ViewId::from_proto(id)?;
 4756        let panel_id = view.panel_id.and_then(proto::PanelId::from_i32);
 4757
 4758        let pane = this.update(cx, |this, _cx| {
 4759            let state = this
 4760                .follower_states
 4761                .get(&leader_id.into())
 4762                .context("stopped following")?;
 4763            anyhow::Ok(state.pane().clone())
 4764        })??;
 4765        let existing_item = pane.update_in(cx, |pane, window, cx| {
 4766            let client = this.read(cx).client().clone();
 4767            pane.items().find_map(|item| {
 4768                let item = item.to_followable_item_handle(cx)?;
 4769                if item.remote_id(&client, window, cx) == Some(id) {
 4770                    Some(item)
 4771                } else {
 4772                    None
 4773                }
 4774            })
 4775        })?;
 4776        let item = if let Some(existing_item) = existing_item {
 4777            existing_item
 4778        } else {
 4779            let variant = view.variant.clone();
 4780            anyhow::ensure!(variant.is_some(), "missing view variant");
 4781
 4782            let task = cx.update(|window, cx| {
 4783                FollowableViewRegistry::from_state_proto(this.clone(), id, variant, window, cx)
 4784            })?;
 4785
 4786            let Some(task) = task else {
 4787                anyhow::bail!(
 4788                    "failed to construct view from leader (maybe from a different version of zed?)"
 4789                );
 4790            };
 4791
 4792            let mut new_item = task.await?;
 4793            pane.update_in(cx, |pane, window, cx| {
 4794                let mut item_to_remove = None;
 4795                for (ix, item) in pane.items().enumerate() {
 4796                    if let Some(item) = item.to_followable_item_handle(cx) {
 4797                        match new_item.dedup(item.as_ref(), window, cx) {
 4798                            Some(item::Dedup::KeepExisting) => {
 4799                                new_item =
 4800                                    item.boxed_clone().to_followable_item_handle(cx).unwrap();
 4801                                break;
 4802                            }
 4803                            Some(item::Dedup::ReplaceExisting) => {
 4804                                item_to_remove = Some((ix, item.item_id()));
 4805                                break;
 4806                            }
 4807                            None => {}
 4808                        }
 4809                    }
 4810                }
 4811
 4812                if let Some((ix, id)) = item_to_remove {
 4813                    pane.remove_item(id, false, false, window, cx);
 4814                    pane.add_item(new_item.boxed_clone(), false, false, Some(ix), window, cx);
 4815                }
 4816            })?;
 4817
 4818            new_item
 4819        };
 4820
 4821        this.update_in(cx, |this, window, cx| {
 4822            let state = this.follower_states.get_mut(&leader_id.into())?;
 4823            item.set_leader_id(Some(leader_id.into()), window, cx);
 4824            state.items_by_leader_view_id.insert(
 4825                id,
 4826                FollowerView {
 4827                    view: item,
 4828                    location: panel_id,
 4829                },
 4830            );
 4831
 4832            Some(())
 4833        })?;
 4834
 4835        Ok(())
 4836    }
 4837
 4838    fn handle_agent_location_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4839        let Some(follower_state) = self.follower_states.get_mut(&CollaboratorId::Agent) else {
 4840            return;
 4841        };
 4842
 4843        if let Some(agent_location) = self.project.read(cx).agent_location() {
 4844            let buffer_entity_id = agent_location.buffer.entity_id();
 4845            let view_id = ViewId {
 4846                creator: CollaboratorId::Agent,
 4847                id: buffer_entity_id.as_u64(),
 4848            };
 4849            follower_state.active_view_id = Some(view_id);
 4850
 4851            let item = match follower_state.items_by_leader_view_id.entry(view_id) {
 4852                hash_map::Entry::Occupied(entry) => Some(entry.into_mut()),
 4853                hash_map::Entry::Vacant(entry) => {
 4854                    let existing_view =
 4855                        follower_state
 4856                            .center_pane
 4857                            .read(cx)
 4858                            .items()
 4859                            .find_map(|item| {
 4860                                let item = item.to_followable_item_handle(cx)?;
 4861                                if item.buffer_kind(cx) == ItemBufferKind::Singleton
 4862                                    && item.project_item_model_ids(cx).as_slice()
 4863                                        == [buffer_entity_id]
 4864                                {
 4865                                    Some(item)
 4866                                } else {
 4867                                    None
 4868                                }
 4869                            });
 4870                    let view = existing_view.or_else(|| {
 4871                        agent_location.buffer.upgrade().and_then(|buffer| {
 4872                            cx.update_default_global(|registry: &mut ProjectItemRegistry, cx| {
 4873                                registry.build_item(buffer, self.project.clone(), None, window, cx)
 4874                            })?
 4875                            .to_followable_item_handle(cx)
 4876                        })
 4877                    });
 4878
 4879                    view.map(|view| {
 4880                        entry.insert(FollowerView {
 4881                            view,
 4882                            location: None,
 4883                        })
 4884                    })
 4885                }
 4886            };
 4887
 4888            if let Some(item) = item {
 4889                item.view
 4890                    .set_leader_id(Some(CollaboratorId::Agent), window, cx);
 4891                item.view
 4892                    .update_agent_location(agent_location.position, window, cx);
 4893            }
 4894        } else {
 4895            follower_state.active_view_id = None;
 4896        }
 4897
 4898        self.leader_updated(CollaboratorId::Agent, window, cx);
 4899    }
 4900
 4901    pub fn update_active_view_for_followers(&mut self, window: &mut Window, cx: &mut App) {
 4902        let mut is_project_item = true;
 4903        let mut update = proto::UpdateActiveView::default();
 4904        if window.is_window_active() {
 4905            let (active_item, panel_id) = self.active_item_for_followers(window, cx);
 4906
 4907            if let Some(item) = active_item
 4908                && item.item_focus_handle(cx).contains_focused(window, cx)
 4909            {
 4910                let leader_id = self
 4911                    .pane_for(&*item)
 4912                    .and_then(|pane| self.leader_for_pane(&pane));
 4913                let leader_peer_id = match leader_id {
 4914                    Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4915                    Some(CollaboratorId::Agent) | None => None,
 4916                };
 4917
 4918                if let Some(item) = item.to_followable_item_handle(cx) {
 4919                    let id = item
 4920                        .remote_id(&self.app_state.client, window, cx)
 4921                        .map(|id| id.to_proto());
 4922
 4923                    if let Some(id) = id
 4924                        && let Some(variant) = item.to_state_proto(window, cx)
 4925                    {
 4926                        let view = Some(proto::View {
 4927                            id: id.clone(),
 4928                            leader_id: leader_peer_id,
 4929                            variant: Some(variant),
 4930                            panel_id: panel_id.map(|id| id as i32),
 4931                        });
 4932
 4933                        is_project_item = item.is_project_item(window, cx);
 4934                        update = proto::UpdateActiveView {
 4935                            view,
 4936                            // TODO: Remove after version 0.145.x stabilizes.
 4937                            id,
 4938                            leader_id: leader_peer_id,
 4939                        };
 4940                    };
 4941                }
 4942            }
 4943        }
 4944
 4945        let active_view_id = update.view.as_ref().and_then(|view| view.id.as_ref());
 4946        if active_view_id != self.last_active_view_id.as_ref() {
 4947            self.last_active_view_id = active_view_id.cloned();
 4948            self.update_followers(
 4949                is_project_item,
 4950                proto::update_followers::Variant::UpdateActiveView(update),
 4951                window,
 4952                cx,
 4953            );
 4954        }
 4955    }
 4956
 4957    fn active_item_for_followers(
 4958        &self,
 4959        window: &mut Window,
 4960        cx: &mut App,
 4961    ) -> (Option<Box<dyn ItemHandle>>, Option<proto::PanelId>) {
 4962        let mut active_item = None;
 4963        let mut panel_id = None;
 4964        for dock in self.all_docks() {
 4965            if dock.focus_handle(cx).contains_focused(window, cx)
 4966                && let Some(panel) = dock.read(cx).active_panel()
 4967                && let Some(pane) = panel.pane(cx)
 4968                && let Some(item) = pane.read(cx).active_item()
 4969            {
 4970                active_item = Some(item);
 4971                panel_id = panel.remote_id();
 4972                break;
 4973            }
 4974        }
 4975
 4976        if active_item.is_none() {
 4977            active_item = self.active_pane().read(cx).active_item();
 4978        }
 4979        (active_item, panel_id)
 4980    }
 4981
 4982    fn update_followers(
 4983        &self,
 4984        project_only: bool,
 4985        update: proto::update_followers::Variant,
 4986        _: &mut Window,
 4987        cx: &mut App,
 4988    ) -> Option<()> {
 4989        // If this update only applies to for followers in the current project,
 4990        // then skip it unless this project is shared. If it applies to all
 4991        // followers, regardless of project, then set `project_id` to none,
 4992        // indicating that it goes to all followers.
 4993        let project_id = if project_only {
 4994            Some(self.project.read(cx).remote_id()?)
 4995        } else {
 4996            None
 4997        };
 4998        self.app_state().workspace_store.update(cx, |store, cx| {
 4999            store.update_followers(project_id, update, cx)
 5000        })
 5001    }
 5002
 5003    pub fn leader_for_pane(&self, pane: &Entity<Pane>) -> Option<CollaboratorId> {
 5004        self.follower_states.iter().find_map(|(leader_id, state)| {
 5005            if state.center_pane == *pane || state.dock_pane.as_ref() == Some(pane) {
 5006                Some(*leader_id)
 5007            } else {
 5008                None
 5009            }
 5010        })
 5011    }
 5012
 5013    fn leader_updated(
 5014        &mut self,
 5015        leader_id: impl Into<CollaboratorId>,
 5016        window: &mut Window,
 5017        cx: &mut Context<Self>,
 5018    ) -> Option<Box<dyn ItemHandle>> {
 5019        cx.notify();
 5020
 5021        let leader_id = leader_id.into();
 5022        let (panel_id, item) = match leader_id {
 5023            CollaboratorId::PeerId(peer_id) => self.active_item_for_peer(peer_id, window, cx)?,
 5024            CollaboratorId::Agent => (None, self.active_item_for_agent()?),
 5025        };
 5026
 5027        let state = self.follower_states.get(&leader_id)?;
 5028        let mut transfer_focus = state.center_pane.read(cx).has_focus(window, cx);
 5029        let pane;
 5030        if let Some(panel_id) = panel_id {
 5031            pane = self
 5032                .activate_panel_for_proto_id(panel_id, window, cx)?
 5033                .pane(cx)?;
 5034            let state = self.follower_states.get_mut(&leader_id)?;
 5035            state.dock_pane = Some(pane.clone());
 5036        } else {
 5037            pane = state.center_pane.clone();
 5038            let state = self.follower_states.get_mut(&leader_id)?;
 5039            if let Some(dock_pane) = state.dock_pane.take() {
 5040                transfer_focus |= dock_pane.focus_handle(cx).contains_focused(window, cx);
 5041            }
 5042        }
 5043
 5044        pane.update(cx, |pane, cx| {
 5045            let focus_active_item = pane.has_focus(window, cx) || transfer_focus;
 5046            if let Some(index) = pane.index_for_item(item.as_ref()) {
 5047                pane.activate_item(index, false, false, window, cx);
 5048            } else {
 5049                pane.add_item(item.boxed_clone(), false, false, None, window, cx)
 5050            }
 5051
 5052            if focus_active_item {
 5053                pane.focus_active_item(window, cx)
 5054            }
 5055        });
 5056
 5057        Some(item)
 5058    }
 5059
 5060    fn active_item_for_agent(&self) -> Option<Box<dyn ItemHandle>> {
 5061        let state = self.follower_states.get(&CollaboratorId::Agent)?;
 5062        let active_view_id = state.active_view_id?;
 5063        Some(
 5064            state
 5065                .items_by_leader_view_id
 5066                .get(&active_view_id)?
 5067                .view
 5068                .boxed_clone(),
 5069        )
 5070    }
 5071
 5072    fn active_item_for_peer(
 5073        &self,
 5074        peer_id: PeerId,
 5075        window: &mut Window,
 5076        cx: &mut Context<Self>,
 5077    ) -> Option<(Option<PanelId>, Box<dyn ItemHandle>)> {
 5078        let call = self.active_call()?;
 5079        let room = call.read(cx).room()?.read(cx);
 5080        let participant = room.remote_participant_for_peer_id(peer_id)?;
 5081        let leader_in_this_app;
 5082        let leader_in_this_project;
 5083        match participant.location {
 5084            call::ParticipantLocation::SharedProject { project_id } => {
 5085                leader_in_this_app = true;
 5086                leader_in_this_project = Some(project_id) == self.project.read(cx).remote_id();
 5087            }
 5088            call::ParticipantLocation::UnsharedProject => {
 5089                leader_in_this_app = true;
 5090                leader_in_this_project = false;
 5091            }
 5092            call::ParticipantLocation::External => {
 5093                leader_in_this_app = false;
 5094                leader_in_this_project = false;
 5095            }
 5096        };
 5097        let state = self.follower_states.get(&peer_id.into())?;
 5098        let mut item_to_activate = None;
 5099        if let (Some(active_view_id), true) = (state.active_view_id, leader_in_this_app) {
 5100            if let Some(item) = state.items_by_leader_view_id.get(&active_view_id)
 5101                && (leader_in_this_project || !item.view.is_project_item(window, cx))
 5102            {
 5103                item_to_activate = Some((item.location, item.view.boxed_clone()));
 5104            }
 5105        } else if let Some(shared_screen) =
 5106            self.shared_screen_for_peer(peer_id, &state.center_pane, window, cx)
 5107        {
 5108            item_to_activate = Some((None, Box::new(shared_screen)));
 5109        }
 5110        item_to_activate
 5111    }
 5112
 5113    fn shared_screen_for_peer(
 5114        &self,
 5115        peer_id: PeerId,
 5116        pane: &Entity<Pane>,
 5117        window: &mut Window,
 5118        cx: &mut App,
 5119    ) -> Option<Entity<SharedScreen>> {
 5120        let call = self.active_call()?;
 5121        let room = call.read(cx).room()?.clone();
 5122        let participant = room.read(cx).remote_participant_for_peer_id(peer_id)?;
 5123        let track = participant.video_tracks.values().next()?.clone();
 5124        let user = participant.user.clone();
 5125
 5126        for item in pane.read(cx).items_of_type::<SharedScreen>() {
 5127            if item.read(cx).peer_id == peer_id {
 5128                return Some(item);
 5129            }
 5130        }
 5131
 5132        Some(cx.new(|cx| SharedScreen::new(track, peer_id, user.clone(), room.clone(), window, cx)))
 5133    }
 5134
 5135    pub fn on_window_activation_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5136        if window.is_window_active() {
 5137            self.update_active_view_for_followers(window, cx);
 5138
 5139            if let Some(database_id) = self.database_id {
 5140                cx.background_spawn(persistence::DB.update_timestamp(database_id))
 5141                    .detach();
 5142            }
 5143        } else {
 5144            for pane in &self.panes {
 5145                pane.update(cx, |pane, cx| {
 5146                    if let Some(item) = pane.active_item() {
 5147                        item.workspace_deactivated(window, cx);
 5148                    }
 5149                    for item in pane.items() {
 5150                        if matches!(
 5151                            item.workspace_settings(cx).autosave,
 5152                            AutosaveSetting::OnWindowChange | AutosaveSetting::OnFocusChange
 5153                        ) {
 5154                            Pane::autosave_item(item.as_ref(), self.project.clone(), window, cx)
 5155                                .detach_and_log_err(cx);
 5156                        }
 5157                    }
 5158                });
 5159            }
 5160        }
 5161    }
 5162
 5163    pub fn active_call(&self) -> Option<&Entity<ActiveCall>> {
 5164        self.active_call.as_ref().map(|(call, _)| call)
 5165    }
 5166
 5167    fn on_active_call_event(
 5168        &mut self,
 5169        _: &Entity<ActiveCall>,
 5170        event: &call::room::Event,
 5171        window: &mut Window,
 5172        cx: &mut Context<Self>,
 5173    ) {
 5174        match event {
 5175            call::room::Event::ParticipantLocationChanged { participant_id }
 5176            | call::room::Event::RemoteVideoTracksChanged { participant_id } => {
 5177                self.leader_updated(participant_id, window, cx);
 5178            }
 5179            _ => {}
 5180        }
 5181    }
 5182
 5183    pub fn database_id(&self) -> Option<WorkspaceId> {
 5184        self.database_id
 5185    }
 5186
 5187    pub fn session_id(&self) -> Option<String> {
 5188        self.session_id.clone()
 5189    }
 5190
 5191    pub fn root_paths(&self, cx: &App) -> Vec<Arc<Path>> {
 5192        let project = self.project().read(cx);
 5193        project
 5194            .visible_worktrees(cx)
 5195            .map(|worktree| worktree.read(cx).abs_path())
 5196            .collect::<Vec<_>>()
 5197    }
 5198
 5199    fn remove_panes(&mut self, member: Member, window: &mut Window, cx: &mut Context<Workspace>) {
 5200        match member {
 5201            Member::Axis(PaneAxis { members, .. }) => {
 5202                for child in members.iter() {
 5203                    self.remove_panes(child.clone(), window, cx)
 5204                }
 5205            }
 5206            Member::Pane(pane) => {
 5207                self.force_remove_pane(&pane, &None, window, cx);
 5208            }
 5209        }
 5210    }
 5211
 5212    fn remove_from_session(&mut self, window: &mut Window, cx: &mut App) -> Task<()> {
 5213        self.session_id.take();
 5214        self.serialize_workspace_internal(window, cx)
 5215    }
 5216
 5217    fn force_remove_pane(
 5218        &mut self,
 5219        pane: &Entity<Pane>,
 5220        focus_on: &Option<Entity<Pane>>,
 5221        window: &mut Window,
 5222        cx: &mut Context<Workspace>,
 5223    ) {
 5224        self.panes.retain(|p| p != pane);
 5225        if let Some(focus_on) = focus_on {
 5226            focus_on.update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5227        } else if self.active_pane() == pane {
 5228            self.panes
 5229                .last()
 5230                .unwrap()
 5231                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5232        }
 5233        if self.last_active_center_pane == Some(pane.downgrade()) {
 5234            self.last_active_center_pane = None;
 5235        }
 5236        cx.notify();
 5237    }
 5238
 5239    fn serialize_workspace(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5240        if self._schedule_serialize_workspace.is_none() {
 5241            self._schedule_serialize_workspace =
 5242                Some(cx.spawn_in(window, async move |this, cx| {
 5243                    cx.background_executor()
 5244                        .timer(SERIALIZATION_THROTTLE_TIME)
 5245                        .await;
 5246                    this.update_in(cx, |this, window, cx| {
 5247                        this.serialize_workspace_internal(window, cx).detach();
 5248                        this._schedule_serialize_workspace.take();
 5249                    })
 5250                    .log_err();
 5251                }));
 5252        }
 5253    }
 5254
 5255    fn serialize_workspace_internal(&self, window: &mut Window, cx: &mut App) -> Task<()> {
 5256        let Some(database_id) = self.database_id() else {
 5257            return Task::ready(());
 5258        };
 5259
 5260        fn serialize_pane_handle(
 5261            pane_handle: &Entity<Pane>,
 5262            window: &mut Window,
 5263            cx: &mut App,
 5264        ) -> SerializedPane {
 5265            let (items, active, pinned_count) = {
 5266                let pane = pane_handle.read(cx);
 5267                let active_item_id = pane.active_item().map(|item| item.item_id());
 5268                (
 5269                    pane.items()
 5270                        .filter_map(|handle| {
 5271                            let handle = handle.to_serializable_item_handle(cx)?;
 5272
 5273                            Some(SerializedItem {
 5274                                kind: Arc::from(handle.serialized_item_kind()),
 5275                                item_id: handle.item_id().as_u64(),
 5276                                active: Some(handle.item_id()) == active_item_id,
 5277                                preview: pane.is_active_preview_item(handle.item_id()),
 5278                            })
 5279                        })
 5280                        .collect::<Vec<_>>(),
 5281                    pane.has_focus(window, cx),
 5282                    pane.pinned_count(),
 5283                )
 5284            };
 5285
 5286            SerializedPane::new(items, active, pinned_count)
 5287        }
 5288
 5289        fn build_serialized_pane_group(
 5290            pane_group: &Member,
 5291            window: &mut Window,
 5292            cx: &mut App,
 5293        ) -> SerializedPaneGroup {
 5294            match pane_group {
 5295                Member::Axis(PaneAxis {
 5296                    axis,
 5297                    members,
 5298                    flexes,
 5299                    bounding_boxes: _,
 5300                }) => SerializedPaneGroup::Group {
 5301                    axis: SerializedAxis(*axis),
 5302                    children: members
 5303                        .iter()
 5304                        .map(|member| build_serialized_pane_group(member, window, cx))
 5305                        .collect::<Vec<_>>(),
 5306                    flexes: Some(flexes.lock().clone()),
 5307                },
 5308                Member::Pane(pane_handle) => {
 5309                    SerializedPaneGroup::Pane(serialize_pane_handle(pane_handle, window, cx))
 5310                }
 5311            }
 5312        }
 5313
 5314        fn build_serialized_docks(
 5315            this: &Workspace,
 5316            window: &mut Window,
 5317            cx: &mut App,
 5318        ) -> DockStructure {
 5319            let left_dock = this.left_dock.read(cx);
 5320            let left_visible = left_dock.is_open();
 5321            let left_active_panel = left_dock
 5322                .active_panel()
 5323                .map(|panel| panel.persistent_name().to_string());
 5324            let left_dock_zoom = left_dock
 5325                .active_panel()
 5326                .map(|panel| panel.is_zoomed(window, cx))
 5327                .unwrap_or(false);
 5328
 5329            let right_dock = this.right_dock.read(cx);
 5330            let right_visible = right_dock.is_open();
 5331            let right_active_panel = right_dock
 5332                .active_panel()
 5333                .map(|panel| panel.persistent_name().to_string());
 5334            let right_dock_zoom = right_dock
 5335                .active_panel()
 5336                .map(|panel| panel.is_zoomed(window, cx))
 5337                .unwrap_or(false);
 5338
 5339            let bottom_dock = this.bottom_dock.read(cx);
 5340            let bottom_visible = bottom_dock.is_open();
 5341            let bottom_active_panel = bottom_dock
 5342                .active_panel()
 5343                .map(|panel| panel.persistent_name().to_string());
 5344            let bottom_dock_zoom = bottom_dock
 5345                .active_panel()
 5346                .map(|panel| panel.is_zoomed(window, cx))
 5347                .unwrap_or(false);
 5348
 5349            DockStructure {
 5350                left: DockData {
 5351                    visible: left_visible,
 5352                    active_panel: left_active_panel,
 5353                    zoom: left_dock_zoom,
 5354                },
 5355                right: DockData {
 5356                    visible: right_visible,
 5357                    active_panel: right_active_panel,
 5358                    zoom: right_dock_zoom,
 5359                },
 5360                bottom: DockData {
 5361                    visible: bottom_visible,
 5362                    active_panel: bottom_active_panel,
 5363                    zoom: bottom_dock_zoom,
 5364                },
 5365            }
 5366        }
 5367
 5368        match self.serialize_workspace_location(cx) {
 5369            WorkspaceLocation::Location(location, paths) => {
 5370                let breakpoints = self.project.update(cx, |project, cx| {
 5371                    project
 5372                        .breakpoint_store()
 5373                        .read(cx)
 5374                        .all_source_breakpoints(cx)
 5375                });
 5376                let user_toolchains = self
 5377                    .project
 5378                    .read(cx)
 5379                    .user_toolchains(cx)
 5380                    .unwrap_or_default();
 5381
 5382                let center_group = build_serialized_pane_group(&self.center.root, window, cx);
 5383                let docks = build_serialized_docks(self, window, cx);
 5384                let window_bounds = Some(SerializedWindowBounds(window.window_bounds()));
 5385
 5386                let serialized_workspace = SerializedWorkspace {
 5387                    id: database_id,
 5388                    location,
 5389                    paths,
 5390                    center_group,
 5391                    window_bounds,
 5392                    display: Default::default(),
 5393                    docks,
 5394                    centered_layout: self.centered_layout,
 5395                    session_id: self.session_id.clone(),
 5396                    breakpoints,
 5397                    window_id: Some(window.window_handle().window_id().as_u64()),
 5398                    user_toolchains,
 5399                };
 5400
 5401                window.spawn(cx, async move |_| {
 5402                    persistence::DB.save_workspace(serialized_workspace).await;
 5403                })
 5404            }
 5405            WorkspaceLocation::DetachFromSession => window.spawn(cx, async move |_| {
 5406                persistence::DB
 5407                    .set_session_id(database_id, None)
 5408                    .await
 5409                    .log_err();
 5410            }),
 5411            WorkspaceLocation::None => Task::ready(()),
 5412        }
 5413    }
 5414
 5415    fn serialize_workspace_location(&self, cx: &App) -> WorkspaceLocation {
 5416        let paths = PathList::new(&self.root_paths(cx));
 5417        if let Some(connection) = self.project.read(cx).remote_connection_options(cx) {
 5418            WorkspaceLocation::Location(SerializedWorkspaceLocation::Remote(connection), paths)
 5419        } else if self.project.read(cx).is_local() {
 5420            if !paths.is_empty() {
 5421                WorkspaceLocation::Location(SerializedWorkspaceLocation::Local, paths)
 5422            } else {
 5423                WorkspaceLocation::DetachFromSession
 5424            }
 5425        } else {
 5426            WorkspaceLocation::None
 5427        }
 5428    }
 5429
 5430    fn update_history(&self, cx: &mut App) {
 5431        let Some(id) = self.database_id() else {
 5432            return;
 5433        };
 5434        if !self.project.read(cx).is_local() {
 5435            return;
 5436        }
 5437        if let Some(manager) = HistoryManager::global(cx) {
 5438            let paths = PathList::new(&self.root_paths(cx));
 5439            manager.update(cx, |this, cx| {
 5440                this.update_history(id, HistoryManagerEntry::new(id, &paths), cx);
 5441            });
 5442        }
 5443    }
 5444
 5445    async fn serialize_items(
 5446        this: &WeakEntity<Self>,
 5447        items_rx: UnboundedReceiver<Box<dyn SerializableItemHandle>>,
 5448        cx: &mut AsyncWindowContext,
 5449    ) -> Result<()> {
 5450        const CHUNK_SIZE: usize = 200;
 5451
 5452        let mut serializable_items = items_rx.ready_chunks(CHUNK_SIZE);
 5453
 5454        while let Some(items_received) = serializable_items.next().await {
 5455            let unique_items =
 5456                items_received
 5457                    .into_iter()
 5458                    .fold(HashMap::default(), |mut acc, item| {
 5459                        acc.entry(item.item_id()).or_insert(item);
 5460                        acc
 5461                    });
 5462
 5463            // We use into_iter() here so that the references to the items are moved into
 5464            // the tasks and not kept alive while we're sleeping.
 5465            for (_, item) in unique_items.into_iter() {
 5466                if let Ok(Some(task)) = this.update_in(cx, |workspace, window, cx| {
 5467                    item.serialize(workspace, false, window, cx)
 5468                }) {
 5469                    cx.background_spawn(async move { task.await.log_err() })
 5470                        .detach();
 5471                }
 5472            }
 5473
 5474            cx.background_executor()
 5475                .timer(SERIALIZATION_THROTTLE_TIME)
 5476                .await;
 5477        }
 5478
 5479        Ok(())
 5480    }
 5481
 5482    pub(crate) fn enqueue_item_serialization(
 5483        &mut self,
 5484        item: Box<dyn SerializableItemHandle>,
 5485    ) -> Result<()> {
 5486        self.serializable_items_tx
 5487            .unbounded_send(item)
 5488            .map_err(|err| anyhow!("failed to send serializable item over channel: {err}"))
 5489    }
 5490
 5491    pub(crate) fn load_workspace(
 5492        serialized_workspace: SerializedWorkspace,
 5493        paths_to_open: Vec<Option<ProjectPath>>,
 5494        window: &mut Window,
 5495        cx: &mut Context<Workspace>,
 5496    ) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 5497        cx.spawn_in(window, async move |workspace, cx| {
 5498            let project = workspace.read_with(cx, |workspace, _| workspace.project().clone())?;
 5499
 5500            let mut center_group = None;
 5501            let mut center_items = None;
 5502
 5503            // Traverse the splits tree and add to things
 5504            if let Some((group, active_pane, items)) = serialized_workspace
 5505                .center_group
 5506                .deserialize(&project, serialized_workspace.id, workspace.clone(), cx)
 5507                .await
 5508            {
 5509                center_items = Some(items);
 5510                center_group = Some((group, active_pane))
 5511            }
 5512
 5513            let mut items_by_project_path = HashMap::default();
 5514            let mut item_ids_by_kind = HashMap::default();
 5515            let mut all_deserialized_items = Vec::default();
 5516            cx.update(|_, cx| {
 5517                for item in center_items.unwrap_or_default().into_iter().flatten() {
 5518                    if let Some(serializable_item_handle) = item.to_serializable_item_handle(cx) {
 5519                        item_ids_by_kind
 5520                            .entry(serializable_item_handle.serialized_item_kind())
 5521                            .or_insert(Vec::new())
 5522                            .push(item.item_id().as_u64() as ItemId);
 5523                    }
 5524
 5525                    if let Some(project_path) = item.project_path(cx) {
 5526                        items_by_project_path.insert(project_path, item.clone());
 5527                    }
 5528                    all_deserialized_items.push(item);
 5529                }
 5530            })?;
 5531
 5532            let opened_items = paths_to_open
 5533                .into_iter()
 5534                .map(|path_to_open| {
 5535                    path_to_open
 5536                        .and_then(|path_to_open| items_by_project_path.remove(&path_to_open))
 5537                })
 5538                .collect::<Vec<_>>();
 5539
 5540            // Remove old panes from workspace panes list
 5541            workspace.update_in(cx, |workspace, window, cx| {
 5542                if let Some((center_group, active_pane)) = center_group {
 5543                    workspace.remove_panes(workspace.center.root.clone(), window, cx);
 5544
 5545                    // Swap workspace center group
 5546                    workspace.center = PaneGroup::with_root(center_group);
 5547                    if let Some(active_pane) = active_pane {
 5548                        workspace.set_active_pane(&active_pane, window, cx);
 5549                        cx.focus_self(window);
 5550                    } else {
 5551                        workspace.set_active_pane(&workspace.center.first_pane(), window, cx);
 5552                    }
 5553                }
 5554
 5555                let docks = serialized_workspace.docks;
 5556
 5557                for (dock, serialized_dock) in [
 5558                    (&mut workspace.right_dock, docks.right),
 5559                    (&mut workspace.left_dock, docks.left),
 5560                    (&mut workspace.bottom_dock, docks.bottom),
 5561                ]
 5562                .iter_mut()
 5563                {
 5564                    dock.update(cx, |dock, cx| {
 5565                        dock.serialized_dock = Some(serialized_dock.clone());
 5566                        dock.restore_state(window, cx);
 5567                    });
 5568                }
 5569
 5570                cx.notify();
 5571            })?;
 5572
 5573            let _ = project
 5574                .update(cx, |project, cx| {
 5575                    project
 5576                        .breakpoint_store()
 5577                        .update(cx, |breakpoint_store, cx| {
 5578                            breakpoint_store
 5579                                .with_serialized_breakpoints(serialized_workspace.breakpoints, cx)
 5580                        })
 5581                })?
 5582                .await;
 5583
 5584            // Clean up all the items that have _not_ been loaded. Our ItemIds aren't stable. That means
 5585            // after loading the items, we might have different items and in order to avoid
 5586            // the database filling up, we delete items that haven't been loaded now.
 5587            //
 5588            // The items that have been loaded, have been saved after they've been added to the workspace.
 5589            let clean_up_tasks = workspace.update_in(cx, |_, window, cx| {
 5590                item_ids_by_kind
 5591                    .into_iter()
 5592                    .map(|(item_kind, loaded_items)| {
 5593                        SerializableItemRegistry::cleanup(
 5594                            item_kind,
 5595                            serialized_workspace.id,
 5596                            loaded_items,
 5597                            window,
 5598                            cx,
 5599                        )
 5600                        .log_err()
 5601                    })
 5602                    .collect::<Vec<_>>()
 5603            })?;
 5604
 5605            futures::future::join_all(clean_up_tasks).await;
 5606
 5607            workspace
 5608                .update_in(cx, |workspace, window, cx| {
 5609                    // Serialize ourself to make sure our timestamps and any pane / item changes are replicated
 5610                    workspace.serialize_workspace_internal(window, cx).detach();
 5611
 5612                    // Ensure that we mark the window as edited if we did load dirty items
 5613                    workspace.update_window_edited(window, cx);
 5614                })
 5615                .ok();
 5616
 5617            Ok(opened_items)
 5618        })
 5619    }
 5620
 5621    fn actions(&self, div: Div, window: &mut Window, cx: &mut Context<Self>) -> Div {
 5622        self.add_workspace_actions_listeners(div, window, cx)
 5623            .on_action(cx.listener(
 5624                |_workspace, action_sequence: &settings::ActionSequence, window, cx| {
 5625                    for action in &action_sequence.0 {
 5626                        window.dispatch_action(action.boxed_clone(), cx);
 5627                    }
 5628                },
 5629            ))
 5630            .on_action(cx.listener(Self::close_inactive_items_and_panes))
 5631            .on_action(cx.listener(Self::close_all_items_and_panes))
 5632            .on_action(cx.listener(Self::save_all))
 5633            .on_action(cx.listener(Self::send_keystrokes))
 5634            .on_action(cx.listener(Self::add_folder_to_project))
 5635            .on_action(cx.listener(Self::follow_next_collaborator))
 5636            .on_action(cx.listener(Self::close_window))
 5637            .on_action(cx.listener(Self::activate_pane_at_index))
 5638            .on_action(cx.listener(Self::move_item_to_pane_at_index))
 5639            .on_action(cx.listener(Self::move_focused_panel_to_next_position))
 5640            .on_action(cx.listener(Self::toggle_edit_predictions_all_files))
 5641            .on_action(cx.listener(|workspace, _: &Unfollow, window, cx| {
 5642                let pane = workspace.active_pane().clone();
 5643                workspace.unfollow_in_pane(&pane, window, cx);
 5644            }))
 5645            .on_action(cx.listener(|workspace, action: &Save, window, cx| {
 5646                workspace
 5647                    .save_active_item(action.save_intent.unwrap_or(SaveIntent::Save), window, cx)
 5648                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5649            }))
 5650            .on_action(cx.listener(|workspace, _: &SaveWithoutFormat, window, cx| {
 5651                workspace
 5652                    .save_active_item(SaveIntent::SaveWithoutFormat, window, cx)
 5653                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5654            }))
 5655            .on_action(cx.listener(|workspace, _: &SaveAs, window, cx| {
 5656                workspace
 5657                    .save_active_item(SaveIntent::SaveAs, window, cx)
 5658                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5659            }))
 5660            .on_action(
 5661                cx.listener(|workspace, _: &ActivatePreviousPane, window, cx| {
 5662                    workspace.activate_previous_pane(window, cx)
 5663                }),
 5664            )
 5665            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5666                workspace.activate_next_pane(window, cx)
 5667            }))
 5668            .on_action(
 5669                cx.listener(|workspace, _: &ActivateNextWindow, _window, cx| {
 5670                    workspace.activate_next_window(cx)
 5671                }),
 5672            )
 5673            .on_action(
 5674                cx.listener(|workspace, _: &ActivatePreviousWindow, _window, cx| {
 5675                    workspace.activate_previous_window(cx)
 5676                }),
 5677            )
 5678            .on_action(cx.listener(|workspace, _: &ActivatePaneLeft, window, cx| {
 5679                workspace.activate_pane_in_direction(SplitDirection::Left, window, cx)
 5680            }))
 5681            .on_action(cx.listener(|workspace, _: &ActivatePaneRight, window, cx| {
 5682                workspace.activate_pane_in_direction(SplitDirection::Right, window, cx)
 5683            }))
 5684            .on_action(cx.listener(|workspace, _: &ActivatePaneUp, window, cx| {
 5685                workspace.activate_pane_in_direction(SplitDirection::Up, window, cx)
 5686            }))
 5687            .on_action(cx.listener(|workspace, _: &ActivatePaneDown, window, cx| {
 5688                workspace.activate_pane_in_direction(SplitDirection::Down, window, cx)
 5689            }))
 5690            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5691                workspace.activate_next_pane(window, cx)
 5692            }))
 5693            .on_action(cx.listener(
 5694                |workspace, action: &MoveItemToPaneInDirection, window, cx| {
 5695                    workspace.move_item_to_pane_in_direction(action, window, cx)
 5696                },
 5697            ))
 5698            .on_action(cx.listener(|workspace, _: &SwapPaneLeft, _, cx| {
 5699                workspace.swap_pane_in_direction(SplitDirection::Left, cx)
 5700            }))
 5701            .on_action(cx.listener(|workspace, _: &SwapPaneRight, _, cx| {
 5702                workspace.swap_pane_in_direction(SplitDirection::Right, cx)
 5703            }))
 5704            .on_action(cx.listener(|workspace, _: &SwapPaneUp, _, cx| {
 5705                workspace.swap_pane_in_direction(SplitDirection::Up, cx)
 5706            }))
 5707            .on_action(cx.listener(|workspace, _: &SwapPaneDown, _, cx| {
 5708                workspace.swap_pane_in_direction(SplitDirection::Down, cx)
 5709            }))
 5710            .on_action(cx.listener(|workspace, _: &MovePaneLeft, _, cx| {
 5711                workspace.move_pane_to_border(SplitDirection::Left, cx)
 5712            }))
 5713            .on_action(cx.listener(|workspace, _: &MovePaneRight, _, cx| {
 5714                workspace.move_pane_to_border(SplitDirection::Right, cx)
 5715            }))
 5716            .on_action(cx.listener(|workspace, _: &MovePaneUp, _, cx| {
 5717                workspace.move_pane_to_border(SplitDirection::Up, cx)
 5718            }))
 5719            .on_action(cx.listener(|workspace, _: &MovePaneDown, _, cx| {
 5720                workspace.move_pane_to_border(SplitDirection::Down, cx)
 5721            }))
 5722            .on_action(cx.listener(|this, _: &ToggleLeftDock, window, cx| {
 5723                this.toggle_dock(DockPosition::Left, window, cx);
 5724            }))
 5725            .on_action(cx.listener(
 5726                |workspace: &mut Workspace, _: &ToggleRightDock, window, cx| {
 5727                    workspace.toggle_dock(DockPosition::Right, window, cx);
 5728                },
 5729            ))
 5730            .on_action(cx.listener(
 5731                |workspace: &mut Workspace, _: &ToggleBottomDock, window, cx| {
 5732                    workspace.toggle_dock(DockPosition::Bottom, window, cx);
 5733                },
 5734            ))
 5735            .on_action(cx.listener(
 5736                |workspace: &mut Workspace, _: &CloseActiveDock, window, cx| {
 5737                    if !workspace.close_active_dock(window, cx) {
 5738                        cx.propagate();
 5739                    }
 5740                },
 5741            ))
 5742            .on_action(
 5743                cx.listener(|workspace: &mut Workspace, _: &CloseAllDocks, window, cx| {
 5744                    workspace.close_all_docks(window, cx);
 5745                }),
 5746            )
 5747            .on_action(cx.listener(
 5748                |workspace: &mut Workspace, _: &ClearAllNotifications, _, cx| {
 5749                    workspace.clear_all_notifications(cx);
 5750                },
 5751            ))
 5752            .on_action(cx.listener(
 5753                |workspace: &mut Workspace, _: &SuppressNotification, _, cx| {
 5754                    if let Some((notification_id, _)) = workspace.notifications.pop() {
 5755                        workspace.suppress_notification(&notification_id, cx);
 5756                    }
 5757                },
 5758            ))
 5759            .on_action(cx.listener(
 5760                |workspace: &mut Workspace, _: &ReopenClosedItem, window, cx| {
 5761                    workspace.reopen_closed_item(window, cx).detach();
 5762                },
 5763            ))
 5764            .on_action(cx.listener(
 5765                |workspace: &mut Workspace, _: &ResetActiveDockSize, window, cx| {
 5766                    for dock in workspace.all_docks() {
 5767                        if dock.focus_handle(cx).contains_focused(window, cx) {
 5768                            let Some(panel) = dock.read(cx).active_panel() else {
 5769                                return;
 5770                            };
 5771
 5772                            // Set to `None`, then the size will fall back to the default.
 5773                            panel.clone().set_size(None, window, cx);
 5774
 5775                            return;
 5776                        }
 5777                    }
 5778                },
 5779            ))
 5780            .on_action(cx.listener(
 5781                |workspace: &mut Workspace, _: &ResetOpenDocksSize, window, cx| {
 5782                    for dock in workspace.all_docks() {
 5783                        if let Some(panel) = dock.read(cx).visible_panel() {
 5784                            // Set to `None`, then the size will fall back to the default.
 5785                            panel.clone().set_size(None, window, cx);
 5786                        }
 5787                    }
 5788                },
 5789            ))
 5790            .on_action(cx.listener(
 5791                |workspace: &mut Workspace, act: &IncreaseActiveDockSize, window, cx| {
 5792                    adjust_active_dock_size_by_px(
 5793                        px_with_ui_font_fallback(act.px, cx),
 5794                        workspace,
 5795                        window,
 5796                        cx,
 5797                    );
 5798                },
 5799            ))
 5800            .on_action(cx.listener(
 5801                |workspace: &mut Workspace, act: &DecreaseActiveDockSize, window, cx| {
 5802                    adjust_active_dock_size_by_px(
 5803                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5804                        workspace,
 5805                        window,
 5806                        cx,
 5807                    );
 5808                },
 5809            ))
 5810            .on_action(cx.listener(
 5811                |workspace: &mut Workspace, act: &IncreaseOpenDocksSize, window, cx| {
 5812                    adjust_open_docks_size_by_px(
 5813                        px_with_ui_font_fallback(act.px, cx),
 5814                        workspace,
 5815                        window,
 5816                        cx,
 5817                    );
 5818                },
 5819            ))
 5820            .on_action(cx.listener(
 5821                |workspace: &mut Workspace, act: &DecreaseOpenDocksSize, window, cx| {
 5822                    adjust_open_docks_size_by_px(
 5823                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5824                        workspace,
 5825                        window,
 5826                        cx,
 5827                    );
 5828                },
 5829            ))
 5830            .on_action(cx.listener(Workspace::toggle_centered_layout))
 5831            .on_action(cx.listener(Workspace::cancel))
 5832    }
 5833
 5834    #[cfg(any(test, feature = "test-support"))]
 5835    pub fn test_new(project: Entity<Project>, window: &mut Window, cx: &mut Context<Self>) -> Self {
 5836        use node_runtime::NodeRuntime;
 5837        use session::Session;
 5838
 5839        let client = project.read(cx).client();
 5840        let user_store = project.read(cx).user_store();
 5841        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 5842        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 5843        window.activate_window();
 5844        let app_state = Arc::new(AppState {
 5845            languages: project.read(cx).languages().clone(),
 5846            workspace_store,
 5847            client,
 5848            user_store,
 5849            fs: project.read(cx).fs().clone(),
 5850            build_window_options: |_, _| Default::default(),
 5851            node_runtime: NodeRuntime::unavailable(),
 5852            session,
 5853        });
 5854        let workspace = Self::new(Default::default(), project, app_state, window, cx);
 5855        workspace
 5856            .active_pane
 5857            .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5858        workspace
 5859    }
 5860
 5861    pub fn register_action<A: Action>(
 5862        &mut self,
 5863        callback: impl Fn(&mut Self, &A, &mut Window, &mut Context<Self>) + 'static,
 5864    ) -> &mut Self {
 5865        let callback = Arc::new(callback);
 5866
 5867        self.workspace_actions.push(Box::new(move |div, _, _, cx| {
 5868            let callback = callback.clone();
 5869            div.on_action(cx.listener(move |workspace, event, window, cx| {
 5870                (callback)(workspace, event, window, cx)
 5871            }))
 5872        }));
 5873        self
 5874    }
 5875    pub fn register_action_renderer(
 5876        &mut self,
 5877        callback: impl Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div + 'static,
 5878    ) -> &mut Self {
 5879        self.workspace_actions.push(Box::new(callback));
 5880        self
 5881    }
 5882
 5883    fn add_workspace_actions_listeners(
 5884        &self,
 5885        mut div: Div,
 5886        window: &mut Window,
 5887        cx: &mut Context<Self>,
 5888    ) -> Div {
 5889        for action in self.workspace_actions.iter() {
 5890            div = (action)(div, self, window, cx)
 5891        }
 5892        div
 5893    }
 5894
 5895    pub fn has_active_modal(&self, _: &mut Window, cx: &mut App) -> bool {
 5896        self.modal_layer.read(cx).has_active_modal()
 5897    }
 5898
 5899    pub fn active_modal<V: ManagedView + 'static>(&self, cx: &App) -> Option<Entity<V>> {
 5900        self.modal_layer.read(cx).active_modal()
 5901    }
 5902
 5903    pub fn toggle_modal<V: ModalView, B>(&mut self, window: &mut Window, cx: &mut App, build: B)
 5904    where
 5905        B: FnOnce(&mut Window, &mut Context<V>) -> V,
 5906    {
 5907        self.modal_layer.update(cx, |modal_layer, cx| {
 5908            modal_layer.toggle_modal(window, cx, build)
 5909        })
 5910    }
 5911
 5912    pub fn hide_modal(&mut self, window: &mut Window, cx: &mut App) -> bool {
 5913        self.modal_layer
 5914            .update(cx, |modal_layer, cx| modal_layer.hide_modal(window, cx))
 5915    }
 5916
 5917    pub fn toggle_status_toast<V: ToastView>(&mut self, entity: Entity<V>, cx: &mut App) {
 5918        self.toast_layer
 5919            .update(cx, |toast_layer, cx| toast_layer.toggle_toast(cx, entity))
 5920    }
 5921
 5922    pub fn toggle_centered_layout(
 5923        &mut self,
 5924        _: &ToggleCenteredLayout,
 5925        _: &mut Window,
 5926        cx: &mut Context<Self>,
 5927    ) {
 5928        self.centered_layout = !self.centered_layout;
 5929        if let Some(database_id) = self.database_id() {
 5930            cx.background_spawn(DB.set_centered_layout(database_id, self.centered_layout))
 5931                .detach_and_log_err(cx);
 5932        }
 5933        cx.notify();
 5934    }
 5935
 5936    fn adjust_padding(padding: Option<f32>) -> f32 {
 5937        padding
 5938            .unwrap_or(Self::DEFAULT_PADDING)
 5939            .clamp(0.0, Self::MAX_PADDING)
 5940    }
 5941
 5942    fn render_dock(
 5943        &self,
 5944        position: DockPosition,
 5945        dock: &Entity<Dock>,
 5946        window: &mut Window,
 5947        cx: &mut App,
 5948    ) -> Option<Div> {
 5949        if self.zoomed_position == Some(position) {
 5950            return None;
 5951        }
 5952
 5953        let leader_border = dock.read(cx).active_panel().and_then(|panel| {
 5954            let pane = panel.pane(cx)?;
 5955            let follower_states = &self.follower_states;
 5956            leader_border_for_pane(follower_states, &pane, window, cx)
 5957        });
 5958
 5959        Some(
 5960            div()
 5961                .flex()
 5962                .flex_none()
 5963                .overflow_hidden()
 5964                .child(dock.clone())
 5965                .children(leader_border),
 5966        )
 5967    }
 5968
 5969    pub fn for_window(window: &mut Window, _: &mut App) -> Option<Entity<Workspace>> {
 5970        window.root().flatten()
 5971    }
 5972
 5973    pub fn zoomed_item(&self) -> Option<&AnyWeakView> {
 5974        self.zoomed.as_ref()
 5975    }
 5976
 5977    pub fn activate_next_window(&mut self, cx: &mut Context<Self>) {
 5978        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 5979            return;
 5980        };
 5981        let windows = cx.windows();
 5982        let next_window =
 5983            SystemWindowTabController::get_next_tab_group_window(cx, current_window_id).or_else(
 5984                || {
 5985                    windows
 5986                        .iter()
 5987                        .cycle()
 5988                        .skip_while(|window| window.window_id() != current_window_id)
 5989                        .nth(1)
 5990                },
 5991            );
 5992
 5993        if let Some(window) = next_window {
 5994            window
 5995                .update(cx, |_, window, _| window.activate_window())
 5996                .ok();
 5997        }
 5998    }
 5999
 6000    pub fn activate_previous_window(&mut self, cx: &mut Context<Self>) {
 6001        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 6002            return;
 6003        };
 6004        let windows = cx.windows();
 6005        let prev_window =
 6006            SystemWindowTabController::get_prev_tab_group_window(cx, current_window_id).or_else(
 6007                || {
 6008                    windows
 6009                        .iter()
 6010                        .rev()
 6011                        .cycle()
 6012                        .skip_while(|window| window.window_id() != current_window_id)
 6013                        .nth(1)
 6014                },
 6015            );
 6016
 6017        if let Some(window) = prev_window {
 6018            window
 6019                .update(cx, |_, window, _| window.activate_window())
 6020                .ok();
 6021        }
 6022    }
 6023
 6024    pub fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
 6025        if cx.stop_active_drag(window) {
 6026        } else if let Some((notification_id, _)) = self.notifications.pop() {
 6027            dismiss_app_notification(&notification_id, cx);
 6028        } else {
 6029            cx.propagate();
 6030        }
 6031    }
 6032
 6033    fn adjust_dock_size_by_px(
 6034        &mut self,
 6035        panel_size: Pixels,
 6036        dock_pos: DockPosition,
 6037        px: Pixels,
 6038        window: &mut Window,
 6039        cx: &mut Context<Self>,
 6040    ) {
 6041        match dock_pos {
 6042            DockPosition::Left => self.resize_left_dock(panel_size + px, window, cx),
 6043            DockPosition::Right => self.resize_right_dock(panel_size + px, window, cx),
 6044            DockPosition::Bottom => self.resize_bottom_dock(panel_size + px, window, cx),
 6045        }
 6046    }
 6047
 6048    fn resize_left_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 6049        let size = new_size.min(self.bounds.right() - RESIZE_HANDLE_SIZE);
 6050
 6051        self.left_dock.update(cx, |left_dock, cx| {
 6052            if WorkspaceSettings::get_global(cx)
 6053                .resize_all_panels_in_dock
 6054                .contains(&DockPosition::Left)
 6055            {
 6056                left_dock.resize_all_panels(Some(size), window, cx);
 6057            } else {
 6058                left_dock.resize_active_panel(Some(size), window, cx);
 6059            }
 6060        });
 6061    }
 6062
 6063    fn resize_right_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 6064        let mut size = new_size.max(self.bounds.left() - RESIZE_HANDLE_SIZE);
 6065        self.left_dock.read_with(cx, |left_dock, cx| {
 6066            let left_dock_size = left_dock
 6067                .active_panel_size(window, cx)
 6068                .unwrap_or(Pixels::ZERO);
 6069            if left_dock_size + size > self.bounds.right() {
 6070                size = self.bounds.right() - left_dock_size
 6071            }
 6072        });
 6073        self.right_dock.update(cx, |right_dock, cx| {
 6074            if WorkspaceSettings::get_global(cx)
 6075                .resize_all_panels_in_dock
 6076                .contains(&DockPosition::Right)
 6077            {
 6078                right_dock.resize_all_panels(Some(size), window, cx);
 6079            } else {
 6080                right_dock.resize_active_panel(Some(size), window, cx);
 6081            }
 6082        });
 6083    }
 6084
 6085    fn resize_bottom_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 6086        let size = new_size.min(self.bounds.bottom() - RESIZE_HANDLE_SIZE - self.bounds.top());
 6087        self.bottom_dock.update(cx, |bottom_dock, cx| {
 6088            if WorkspaceSettings::get_global(cx)
 6089                .resize_all_panels_in_dock
 6090                .contains(&DockPosition::Bottom)
 6091            {
 6092                bottom_dock.resize_all_panels(Some(size), window, cx);
 6093            } else {
 6094                bottom_dock.resize_active_panel(Some(size), window, cx);
 6095            }
 6096        });
 6097    }
 6098
 6099    fn toggle_edit_predictions_all_files(
 6100        &mut self,
 6101        _: &ToggleEditPrediction,
 6102        _window: &mut Window,
 6103        cx: &mut Context<Self>,
 6104    ) {
 6105        let fs = self.project().read(cx).fs().clone();
 6106        let show_edit_predictions = all_language_settings(None, cx).show_edit_predictions(None, cx);
 6107        update_settings_file(fs, cx, move |file, _| {
 6108            file.project.all_languages.defaults.show_edit_predictions = Some(!show_edit_predictions)
 6109        });
 6110    }
 6111}
 6112
 6113fn leader_border_for_pane(
 6114    follower_states: &HashMap<CollaboratorId, FollowerState>,
 6115    pane: &Entity<Pane>,
 6116    _: &Window,
 6117    cx: &App,
 6118) -> Option<Div> {
 6119    let (leader_id, _follower_state) = follower_states.iter().find_map(|(leader_id, state)| {
 6120        if state.pane() == pane {
 6121            Some((*leader_id, state))
 6122        } else {
 6123            None
 6124        }
 6125    })?;
 6126
 6127    let mut leader_color = match leader_id {
 6128        CollaboratorId::PeerId(leader_peer_id) => {
 6129            let room = ActiveCall::try_global(cx)?.read(cx).room()?.read(cx);
 6130            let leader = room.remote_participant_for_peer_id(leader_peer_id)?;
 6131
 6132            cx.theme()
 6133                .players()
 6134                .color_for_participant(leader.participant_index.0)
 6135                .cursor
 6136        }
 6137        CollaboratorId::Agent => cx.theme().players().agent().cursor,
 6138    };
 6139    leader_color.fade_out(0.3);
 6140    Some(
 6141        div()
 6142            .absolute()
 6143            .size_full()
 6144            .left_0()
 6145            .top_0()
 6146            .border_2()
 6147            .border_color(leader_color),
 6148    )
 6149}
 6150
 6151fn window_bounds_env_override() -> Option<Bounds<Pixels>> {
 6152    ZED_WINDOW_POSITION
 6153        .zip(*ZED_WINDOW_SIZE)
 6154        .map(|(position, size)| Bounds {
 6155            origin: position,
 6156            size,
 6157        })
 6158}
 6159
 6160fn open_items(
 6161    serialized_workspace: Option<SerializedWorkspace>,
 6162    mut project_paths_to_open: Vec<(PathBuf, Option<ProjectPath>)>,
 6163    window: &mut Window,
 6164    cx: &mut Context<Workspace>,
 6165) -> impl 'static + Future<Output = Result<Vec<Option<Result<Box<dyn ItemHandle>>>>>> + use<> {
 6166    let restored_items = serialized_workspace.map(|serialized_workspace| {
 6167        Workspace::load_workspace(
 6168            serialized_workspace,
 6169            project_paths_to_open
 6170                .iter()
 6171                .map(|(_, project_path)| project_path)
 6172                .cloned()
 6173                .collect(),
 6174            window,
 6175            cx,
 6176        )
 6177    });
 6178
 6179    cx.spawn_in(window, async move |workspace, cx| {
 6180        let mut opened_items = Vec::with_capacity(project_paths_to_open.len());
 6181
 6182        if let Some(restored_items) = restored_items {
 6183            let restored_items = restored_items.await?;
 6184
 6185            let restored_project_paths = restored_items
 6186                .iter()
 6187                .filter_map(|item| {
 6188                    cx.update(|_, cx| item.as_ref()?.project_path(cx))
 6189                        .ok()
 6190                        .flatten()
 6191                })
 6192                .collect::<HashSet<_>>();
 6193
 6194            for restored_item in restored_items {
 6195                opened_items.push(restored_item.map(Ok));
 6196            }
 6197
 6198            project_paths_to_open
 6199                .iter_mut()
 6200                .for_each(|(_, project_path)| {
 6201                    if let Some(project_path_to_open) = project_path
 6202                        && restored_project_paths.contains(project_path_to_open)
 6203                    {
 6204                        *project_path = None;
 6205                    }
 6206                });
 6207        } else {
 6208            for _ in 0..project_paths_to_open.len() {
 6209                opened_items.push(None);
 6210            }
 6211        }
 6212        assert!(opened_items.len() == project_paths_to_open.len());
 6213
 6214        let tasks =
 6215            project_paths_to_open
 6216                .into_iter()
 6217                .enumerate()
 6218                .map(|(ix, (abs_path, project_path))| {
 6219                    let workspace = workspace.clone();
 6220                    cx.spawn(async move |cx| {
 6221                        let file_project_path = project_path?;
 6222                        let abs_path_task = workspace.update(cx, |workspace, cx| {
 6223                            workspace.project().update(cx, |project, cx| {
 6224                                project.resolve_abs_path(abs_path.to_string_lossy().as_ref(), cx)
 6225                            })
 6226                        });
 6227
 6228                        // We only want to open file paths here. If one of the items
 6229                        // here is a directory, it was already opened further above
 6230                        // with a `find_or_create_worktree`.
 6231                        if let Ok(task) = abs_path_task
 6232                            && task.await.is_none_or(|p| p.is_file())
 6233                        {
 6234                            return Some((
 6235                                ix,
 6236                                workspace
 6237                                    .update_in(cx, |workspace, window, cx| {
 6238                                        workspace.open_path(
 6239                                            file_project_path,
 6240                                            None,
 6241                                            true,
 6242                                            window,
 6243                                            cx,
 6244                                        )
 6245                                    })
 6246                                    .log_err()?
 6247                                    .await,
 6248                            ));
 6249                        }
 6250                        None
 6251                    })
 6252                });
 6253
 6254        let tasks = tasks.collect::<Vec<_>>();
 6255
 6256        let tasks = futures::future::join_all(tasks);
 6257        for (ix, path_open_result) in tasks.await.into_iter().flatten() {
 6258            opened_items[ix] = Some(path_open_result);
 6259        }
 6260
 6261        Ok(opened_items)
 6262    })
 6263}
 6264
 6265enum ActivateInDirectionTarget {
 6266    Pane(Entity<Pane>),
 6267    Dock(Entity<Dock>),
 6268}
 6269
 6270fn notify_if_database_failed(workspace: WindowHandle<Workspace>, cx: &mut AsyncApp) {
 6271    workspace
 6272        .update(cx, |workspace, _, cx| {
 6273            if (*db::ALL_FILE_DB_FAILED).load(std::sync::atomic::Ordering::Acquire) {
 6274                struct DatabaseFailedNotification;
 6275
 6276                workspace.show_notification(
 6277                    NotificationId::unique::<DatabaseFailedNotification>(),
 6278                    cx,
 6279                    |cx| {
 6280                        cx.new(|cx| {
 6281                            MessageNotification::new("Failed to load the database file.", cx)
 6282                                .primary_message("File an Issue")
 6283                                .primary_icon(IconName::Plus)
 6284                                .primary_on_click(|window, cx| {
 6285                                    window.dispatch_action(Box::new(FileBugReport), cx)
 6286                                })
 6287                        })
 6288                    },
 6289                );
 6290            }
 6291        })
 6292        .log_err();
 6293}
 6294
 6295fn px_with_ui_font_fallback(val: u32, cx: &Context<Workspace>) -> Pixels {
 6296    if val == 0 {
 6297        ThemeSettings::get_global(cx).ui_font_size(cx)
 6298    } else {
 6299        px(val as f32)
 6300    }
 6301}
 6302
 6303fn adjust_active_dock_size_by_px(
 6304    px: Pixels,
 6305    workspace: &mut Workspace,
 6306    window: &mut Window,
 6307    cx: &mut Context<Workspace>,
 6308) {
 6309    let Some(active_dock) = workspace
 6310        .all_docks()
 6311        .into_iter()
 6312        .find(|dock| dock.focus_handle(cx).contains_focused(window, cx))
 6313    else {
 6314        return;
 6315    };
 6316    let dock = active_dock.read(cx);
 6317    let Some(panel_size) = dock.active_panel_size(window, cx) else {
 6318        return;
 6319    };
 6320    let dock_pos = dock.position();
 6321    workspace.adjust_dock_size_by_px(panel_size, dock_pos, px, window, cx);
 6322}
 6323
 6324fn adjust_open_docks_size_by_px(
 6325    px: Pixels,
 6326    workspace: &mut Workspace,
 6327    window: &mut Window,
 6328    cx: &mut Context<Workspace>,
 6329) {
 6330    let docks = workspace
 6331        .all_docks()
 6332        .into_iter()
 6333        .filter_map(|dock| {
 6334            if dock.read(cx).is_open() {
 6335                let dock = dock.read(cx);
 6336                let panel_size = dock.active_panel_size(window, cx)?;
 6337                let dock_pos = dock.position();
 6338                Some((panel_size, dock_pos, px))
 6339            } else {
 6340                None
 6341            }
 6342        })
 6343        .collect::<Vec<_>>();
 6344
 6345    docks
 6346        .into_iter()
 6347        .for_each(|(panel_size, dock_pos, offset)| {
 6348            workspace.adjust_dock_size_by_px(panel_size, dock_pos, offset, window, cx);
 6349        });
 6350}
 6351
 6352impl Focusable for Workspace {
 6353    fn focus_handle(&self, cx: &App) -> FocusHandle {
 6354        self.active_pane.focus_handle(cx)
 6355    }
 6356}
 6357
 6358#[derive(Clone)]
 6359struct DraggedDock(DockPosition);
 6360
 6361impl Render for DraggedDock {
 6362    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
 6363        gpui::Empty
 6364    }
 6365}
 6366
 6367impl Render for Workspace {
 6368    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 6369        let mut context = KeyContext::new_with_defaults();
 6370        context.add("Workspace");
 6371        context.set("keyboard_layout", cx.keyboard_layout().name().to_string());
 6372        if let Some(status) = self
 6373            .debugger_provider
 6374            .as_ref()
 6375            .and_then(|provider| provider.active_thread_state(cx))
 6376        {
 6377            match status {
 6378                ThreadStatus::Running | ThreadStatus::Stepping => {
 6379                    context.add("debugger_running");
 6380                }
 6381                ThreadStatus::Stopped => context.add("debugger_stopped"),
 6382                ThreadStatus::Exited | ThreadStatus::Ended => {}
 6383            }
 6384        }
 6385
 6386        if self.left_dock.read(cx).is_open() {
 6387            if let Some(active_panel) = self.left_dock.read(cx).active_panel() {
 6388                context.set("left_dock", active_panel.panel_key());
 6389            }
 6390        }
 6391
 6392        if self.right_dock.read(cx).is_open() {
 6393            if let Some(active_panel) = self.right_dock.read(cx).active_panel() {
 6394                context.set("right_dock", active_panel.panel_key());
 6395            }
 6396        }
 6397
 6398        if self.bottom_dock.read(cx).is_open() {
 6399            if let Some(active_panel) = self.bottom_dock.read(cx).active_panel() {
 6400                context.set("bottom_dock", active_panel.panel_key());
 6401            }
 6402        }
 6403
 6404        let centered_layout = self.centered_layout
 6405            && self.center.panes().len() == 1
 6406            && self.active_item(cx).is_some();
 6407        let render_padding = |size| {
 6408            (size > 0.0).then(|| {
 6409                div()
 6410                    .h_full()
 6411                    .w(relative(size))
 6412                    .bg(cx.theme().colors().editor_background)
 6413                    .border_color(cx.theme().colors().pane_group_border)
 6414            })
 6415        };
 6416        let paddings = if centered_layout {
 6417            let settings = WorkspaceSettings::get_global(cx).centered_layout;
 6418            (
 6419                render_padding(Self::adjust_padding(settings.left_padding)),
 6420                render_padding(Self::adjust_padding(settings.right_padding)),
 6421            )
 6422        } else {
 6423            (None, None)
 6424        };
 6425        let ui_font = theme::setup_ui_font(window, cx);
 6426
 6427        let theme = cx.theme().clone();
 6428        let colors = theme.colors();
 6429        let notification_entities = self
 6430            .notifications
 6431            .iter()
 6432            .map(|(_, notification)| notification.entity_id())
 6433            .collect::<Vec<_>>();
 6434        let bottom_dock_layout = WorkspaceSettings::get_global(cx).bottom_dock_layout;
 6435
 6436        client_side_decorations(
 6437            self.actions(div(), window, cx)
 6438                .key_context(context)
 6439                .relative()
 6440                .size_full()
 6441                .flex()
 6442                .flex_col()
 6443                .font(ui_font)
 6444                .gap_0()
 6445                .justify_start()
 6446                .items_start()
 6447                .text_color(colors.text)
 6448                .overflow_hidden()
 6449                .children(self.titlebar_item.clone())
 6450                .on_modifiers_changed(move |_, _, cx| {
 6451                    for &id in &notification_entities {
 6452                        cx.notify(id);
 6453                    }
 6454                })
 6455                .child(
 6456                    div()
 6457                        .size_full()
 6458                        .relative()
 6459                        .flex_1()
 6460                        .flex()
 6461                        .flex_col()
 6462                        .child(
 6463                            div()
 6464                                .id("workspace")
 6465                                .bg(colors.background)
 6466                                .relative()
 6467                                .flex_1()
 6468                                .w_full()
 6469                                .flex()
 6470                                .flex_col()
 6471                                .overflow_hidden()
 6472                                .border_t_1()
 6473                                .border_b_1()
 6474                                .border_color(colors.border)
 6475                                .child({
 6476                                    let this = cx.entity();
 6477                                    canvas(
 6478                                        move |bounds, window, cx| {
 6479                                            this.update(cx, |this, cx| {
 6480                                                let bounds_changed = this.bounds != bounds;
 6481                                                this.bounds = bounds;
 6482
 6483                                                if bounds_changed {
 6484                                                    this.left_dock.update(cx, |dock, cx| {
 6485                                                        dock.clamp_panel_size(
 6486                                                            bounds.size.width,
 6487                                                            window,
 6488                                                            cx,
 6489                                                        )
 6490                                                    });
 6491
 6492                                                    this.right_dock.update(cx, |dock, cx| {
 6493                                                        dock.clamp_panel_size(
 6494                                                            bounds.size.width,
 6495                                                            window,
 6496                                                            cx,
 6497                                                        )
 6498                                                    });
 6499
 6500                                                    this.bottom_dock.update(cx, |dock, cx| {
 6501                                                        dock.clamp_panel_size(
 6502                                                            bounds.size.height,
 6503                                                            window,
 6504                                                            cx,
 6505                                                        )
 6506                                                    });
 6507                                                }
 6508                                            })
 6509                                        },
 6510                                        |_, _, _, _| {},
 6511                                    )
 6512                                    .absolute()
 6513                                    .size_full()
 6514                                })
 6515                                .when(self.zoomed.is_none(), |this| {
 6516                                    this.on_drag_move(cx.listener(
 6517                                        move |workspace,
 6518                                              e: &DragMoveEvent<DraggedDock>,
 6519                                              window,
 6520                                              cx| {
 6521                                            if workspace.previous_dock_drag_coordinates
 6522                                                != Some(e.event.position)
 6523                                            {
 6524                                                workspace.previous_dock_drag_coordinates =
 6525                                                    Some(e.event.position);
 6526                                                match e.drag(cx).0 {
 6527                                                    DockPosition::Left => {
 6528                                                        workspace.resize_left_dock(
 6529                                                            e.event.position.x
 6530                                                                - workspace.bounds.left(),
 6531                                                            window,
 6532                                                            cx,
 6533                                                        );
 6534                                                    }
 6535                                                    DockPosition::Right => {
 6536                                                        workspace.resize_right_dock(
 6537                                                            workspace.bounds.right()
 6538                                                                - e.event.position.x,
 6539                                                            window,
 6540                                                            cx,
 6541                                                        );
 6542                                                    }
 6543                                                    DockPosition::Bottom => {
 6544                                                        workspace.resize_bottom_dock(
 6545                                                            workspace.bounds.bottom()
 6546                                                                - e.event.position.y,
 6547                                                            window,
 6548                                                            cx,
 6549                                                        );
 6550                                                    }
 6551                                                };
 6552                                                workspace.serialize_workspace(window, cx);
 6553                                            }
 6554                                        },
 6555                                    ))
 6556                                })
 6557                                .child({
 6558                                    match bottom_dock_layout {
 6559                                        BottomDockLayout::Full => div()
 6560                                            .flex()
 6561                                            .flex_col()
 6562                                            .h_full()
 6563                                            .child(
 6564                                                div()
 6565                                                    .flex()
 6566                                                    .flex_row()
 6567                                                    .flex_1()
 6568                                                    .overflow_hidden()
 6569                                                    .children(self.render_dock(
 6570                                                        DockPosition::Left,
 6571                                                        &self.left_dock,
 6572                                                        window,
 6573                                                        cx,
 6574                                                    ))
 6575                                                    .child(
 6576                                                        div()
 6577                                                            .flex()
 6578                                                            .flex_col()
 6579                                                            .flex_1()
 6580                                                            .overflow_hidden()
 6581                                                            .child(
 6582                                                                h_flex()
 6583                                                                    .flex_1()
 6584                                                                    .when_some(
 6585                                                                        paddings.0,
 6586                                                                        |this, p| {
 6587                                                                            this.child(
 6588                                                                                p.border_r_1(),
 6589                                                                            )
 6590                                                                        },
 6591                                                                    )
 6592                                                                    .child(self.center.render(
 6593                                                                        self.zoomed.as_ref(),
 6594                                                                        &PaneRenderContext {
 6595                                                                            follower_states:
 6596                                                                                &self.follower_states,
 6597                                                                            active_call: self.active_call(),
 6598                                                                            active_pane: &self.active_pane,
 6599                                                                            app_state: &self.app_state,
 6600                                                                            project: &self.project,
 6601                                                                            workspace: &self.weak_self,
 6602                                                                        },
 6603                                                                        window,
 6604                                                                        cx,
 6605                                                                    ))
 6606                                                                    .when_some(
 6607                                                                        paddings.1,
 6608                                                                        |this, p| {
 6609                                                                            this.child(
 6610                                                                                p.border_l_1(),
 6611                                                                            )
 6612                                                                        },
 6613                                                                    ),
 6614                                                            ),
 6615                                                    )
 6616                                                    .children(self.render_dock(
 6617                                                        DockPosition::Right,
 6618                                                        &self.right_dock,
 6619                                                        window,
 6620                                                        cx,
 6621                                                    )),
 6622                                            )
 6623                                            .child(div().w_full().children(self.render_dock(
 6624                                                DockPosition::Bottom,
 6625                                                &self.bottom_dock,
 6626                                                window,
 6627                                                cx
 6628                                            ))),
 6629
 6630                                        BottomDockLayout::LeftAligned => div()
 6631                                            .flex()
 6632                                            .flex_row()
 6633                                            .h_full()
 6634                                            .child(
 6635                                                div()
 6636                                                    .flex()
 6637                                                    .flex_col()
 6638                                                    .flex_1()
 6639                                                    .h_full()
 6640                                                    .child(
 6641                                                        div()
 6642                                                            .flex()
 6643                                                            .flex_row()
 6644                                                            .flex_1()
 6645                                                            .children(self.render_dock(DockPosition::Left, &self.left_dock, window, cx))
 6646                                                            .child(
 6647                                                                div()
 6648                                                                    .flex()
 6649                                                                    .flex_col()
 6650                                                                    .flex_1()
 6651                                                                    .overflow_hidden()
 6652                                                                    .child(
 6653                                                                        h_flex()
 6654                                                                            .flex_1()
 6655                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6656                                                                            .child(self.center.render(
 6657                                                                                self.zoomed.as_ref(),
 6658                                                                                &PaneRenderContext {
 6659                                                                                    follower_states:
 6660                                                                                        &self.follower_states,
 6661                                                                                    active_call: self.active_call(),
 6662                                                                                    active_pane: &self.active_pane,
 6663                                                                                    app_state: &self.app_state,
 6664                                                                                    project: &self.project,
 6665                                                                                    workspace: &self.weak_self,
 6666                                                                                },
 6667                                                                                window,
 6668                                                                                cx,
 6669                                                                            ))
 6670                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6671                                                                    )
 6672                                                            )
 6673                                                    )
 6674                                                    .child(
 6675                                                        div()
 6676                                                            .w_full()
 6677                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6678                                                    ),
 6679                                            )
 6680                                            .children(self.render_dock(
 6681                                                DockPosition::Right,
 6682                                                &self.right_dock,
 6683                                                window,
 6684                                                cx,
 6685                                            )),
 6686
 6687                                        BottomDockLayout::RightAligned => div()
 6688                                            .flex()
 6689                                            .flex_row()
 6690                                            .h_full()
 6691                                            .children(self.render_dock(
 6692                                                DockPosition::Left,
 6693                                                &self.left_dock,
 6694                                                window,
 6695                                                cx,
 6696                                            ))
 6697                                            .child(
 6698                                                div()
 6699                                                    .flex()
 6700                                                    .flex_col()
 6701                                                    .flex_1()
 6702                                                    .h_full()
 6703                                                    .child(
 6704                                                        div()
 6705                                                            .flex()
 6706                                                            .flex_row()
 6707                                                            .flex_1()
 6708                                                            .child(
 6709                                                                div()
 6710                                                                    .flex()
 6711                                                                    .flex_col()
 6712                                                                    .flex_1()
 6713                                                                    .overflow_hidden()
 6714                                                                    .child(
 6715                                                                        h_flex()
 6716                                                                            .flex_1()
 6717                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6718                                                                            .child(self.center.render(
 6719                                                                                self.zoomed.as_ref(),
 6720                                                                                &PaneRenderContext {
 6721                                                                                    follower_states:
 6722                                                                                        &self.follower_states,
 6723                                                                                    active_call: self.active_call(),
 6724                                                                                    active_pane: &self.active_pane,
 6725                                                                                    app_state: &self.app_state,
 6726                                                                                    project: &self.project,
 6727                                                                                    workspace: &self.weak_self,
 6728                                                                                },
 6729                                                                                window,
 6730                                                                                cx,
 6731                                                                            ))
 6732                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6733                                                                    )
 6734                                                            )
 6735                                                            .children(self.render_dock(DockPosition::Right, &self.right_dock, window, cx))
 6736                                                    )
 6737                                                    .child(
 6738                                                        div()
 6739                                                            .w_full()
 6740                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6741                                                    ),
 6742                                            ),
 6743
 6744                                        BottomDockLayout::Contained => div()
 6745                                            .flex()
 6746                                            .flex_row()
 6747                                            .h_full()
 6748                                            .children(self.render_dock(
 6749                                                DockPosition::Left,
 6750                                                &self.left_dock,
 6751                                                window,
 6752                                                cx,
 6753                                            ))
 6754                                            .child(
 6755                                                div()
 6756                                                    .flex()
 6757                                                    .flex_col()
 6758                                                    .flex_1()
 6759                                                    .overflow_hidden()
 6760                                                    .child(
 6761                                                        h_flex()
 6762                                                            .flex_1()
 6763                                                            .when_some(paddings.0, |this, p| {
 6764                                                                this.child(p.border_r_1())
 6765                                                            })
 6766                                                            .child(self.center.render(
 6767                                                                self.zoomed.as_ref(),
 6768                                                                &PaneRenderContext {
 6769                                                                    follower_states:
 6770                                                                        &self.follower_states,
 6771                                                                    active_call: self.active_call(),
 6772                                                                    active_pane: &self.active_pane,
 6773                                                                    app_state: &self.app_state,
 6774                                                                    project: &self.project,
 6775                                                                    workspace: &self.weak_self,
 6776                                                                },
 6777                                                                window,
 6778                                                                cx,
 6779                                                            ))
 6780                                                            .when_some(paddings.1, |this, p| {
 6781                                                                this.child(p.border_l_1())
 6782                                                            }),
 6783                                                    )
 6784                                                    .children(self.render_dock(
 6785                                                        DockPosition::Bottom,
 6786                                                        &self.bottom_dock,
 6787                                                        window,
 6788                                                        cx,
 6789                                                    )),
 6790                                            )
 6791                                            .children(self.render_dock(
 6792                                                DockPosition::Right,
 6793                                                &self.right_dock,
 6794                                                window,
 6795                                                cx,
 6796                                            )),
 6797                                    }
 6798                                })
 6799                                .children(self.zoomed.as_ref().and_then(|view| {
 6800                                    let zoomed_view = view.upgrade()?;
 6801                                    let div = div()
 6802                                        .occlude()
 6803                                        .absolute()
 6804                                        .overflow_hidden()
 6805                                        .border_color(colors.border)
 6806                                        .bg(colors.background)
 6807                                        .child(zoomed_view)
 6808                                        .inset_0()
 6809                                        .shadow_lg();
 6810
 6811                                    if !WorkspaceSettings::get_global(cx).zoomed_padding {
 6812                                       return Some(div);
 6813                                    }
 6814
 6815                                    Some(match self.zoomed_position {
 6816                                        Some(DockPosition::Left) => div.right_2().border_r_1(),
 6817                                        Some(DockPosition::Right) => div.left_2().border_l_1(),
 6818                                        Some(DockPosition::Bottom) => div.top_2().border_t_1(),
 6819                                        None => {
 6820                                            div.top_2().bottom_2().left_2().right_2().border_1()
 6821                                        }
 6822                                    })
 6823                                }))
 6824                                .children(self.render_notifications(window, cx)),
 6825                        )
 6826                        .when(self.status_bar_visible(cx), |parent| {
 6827                            parent.child(self.status_bar.clone())
 6828                        })
 6829                        .child(self.modal_layer.clone())
 6830                        .child(self.toast_layer.clone()),
 6831                ),
 6832            window,
 6833            cx,
 6834        )
 6835    }
 6836}
 6837
 6838impl WorkspaceStore {
 6839    pub fn new(client: Arc<Client>, cx: &mut Context<Self>) -> Self {
 6840        Self {
 6841            workspaces: Default::default(),
 6842            _subscriptions: vec![
 6843                client.add_request_handler(cx.weak_entity(), Self::handle_follow),
 6844                client.add_message_handler(cx.weak_entity(), Self::handle_update_followers),
 6845            ],
 6846            client,
 6847        }
 6848    }
 6849
 6850    pub fn update_followers(
 6851        &self,
 6852        project_id: Option<u64>,
 6853        update: proto::update_followers::Variant,
 6854        cx: &App,
 6855    ) -> Option<()> {
 6856        let active_call = ActiveCall::try_global(cx)?;
 6857        let room_id = active_call.read(cx).room()?.read(cx).id();
 6858        self.client
 6859            .send(proto::UpdateFollowers {
 6860                room_id,
 6861                project_id,
 6862                variant: Some(update),
 6863            })
 6864            .log_err()
 6865    }
 6866
 6867    pub async fn handle_follow(
 6868        this: Entity<Self>,
 6869        envelope: TypedEnvelope<proto::Follow>,
 6870        mut cx: AsyncApp,
 6871    ) -> Result<proto::FollowResponse> {
 6872        this.update(&mut cx, |this, cx| {
 6873            let follower = Follower {
 6874                project_id: envelope.payload.project_id,
 6875                peer_id: envelope.original_sender_id()?,
 6876            };
 6877
 6878            let mut response = proto::FollowResponse::default();
 6879            this.workspaces.retain(|workspace| {
 6880                workspace
 6881                    .update(cx, |workspace, window, cx| {
 6882                        let handler_response =
 6883                            workspace.handle_follow(follower.project_id, window, cx);
 6884                        if let Some(active_view) = handler_response.active_view
 6885                            && workspace.project.read(cx).remote_id() == follower.project_id
 6886                        {
 6887                            response.active_view = Some(active_view)
 6888                        }
 6889                    })
 6890                    .is_ok()
 6891            });
 6892
 6893            Ok(response)
 6894        })?
 6895    }
 6896
 6897    async fn handle_update_followers(
 6898        this: Entity<Self>,
 6899        envelope: TypedEnvelope<proto::UpdateFollowers>,
 6900        mut cx: AsyncApp,
 6901    ) -> Result<()> {
 6902        let leader_id = envelope.original_sender_id()?;
 6903        let update = envelope.payload;
 6904
 6905        this.update(&mut cx, |this, cx| {
 6906            this.workspaces.retain(|workspace| {
 6907                workspace
 6908                    .update(cx, |workspace, window, cx| {
 6909                        let project_id = workspace.project.read(cx).remote_id();
 6910                        if update.project_id != project_id && update.project_id.is_some() {
 6911                            return;
 6912                        }
 6913                        workspace.handle_update_followers(leader_id, update.clone(), window, cx);
 6914                    })
 6915                    .is_ok()
 6916            });
 6917            Ok(())
 6918        })?
 6919    }
 6920
 6921    pub fn workspaces(&self) -> &HashSet<WindowHandle<Workspace>> {
 6922        &self.workspaces
 6923    }
 6924}
 6925
 6926impl ViewId {
 6927    pub(crate) fn from_proto(message: proto::ViewId) -> Result<Self> {
 6928        Ok(Self {
 6929            creator: message
 6930                .creator
 6931                .map(CollaboratorId::PeerId)
 6932                .context("creator is missing")?,
 6933            id: message.id,
 6934        })
 6935    }
 6936
 6937    pub(crate) fn to_proto(self) -> Option<proto::ViewId> {
 6938        if let CollaboratorId::PeerId(peer_id) = self.creator {
 6939            Some(proto::ViewId {
 6940                creator: Some(peer_id),
 6941                id: self.id,
 6942            })
 6943        } else {
 6944            None
 6945        }
 6946    }
 6947}
 6948
 6949impl FollowerState {
 6950    fn pane(&self) -> &Entity<Pane> {
 6951        self.dock_pane.as_ref().unwrap_or(&self.center_pane)
 6952    }
 6953}
 6954
 6955pub trait WorkspaceHandle {
 6956    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath>;
 6957}
 6958
 6959impl WorkspaceHandle for Entity<Workspace> {
 6960    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath> {
 6961        self.read(cx)
 6962            .worktrees(cx)
 6963            .flat_map(|worktree| {
 6964                let worktree_id = worktree.read(cx).id();
 6965                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
 6966                    worktree_id,
 6967                    path: f.path.clone(),
 6968                })
 6969            })
 6970            .collect::<Vec<_>>()
 6971    }
 6972}
 6973
 6974pub async fn last_opened_workspace_location() -> Option<(SerializedWorkspaceLocation, PathList)> {
 6975    DB.last_workspace().await.log_err().flatten()
 6976}
 6977
 6978pub fn last_session_workspace_locations(
 6979    last_session_id: &str,
 6980    last_session_window_stack: Option<Vec<WindowId>>,
 6981) -> Option<Vec<(SerializedWorkspaceLocation, PathList)>> {
 6982    DB.last_session_workspace_locations(last_session_id, last_session_window_stack)
 6983        .log_err()
 6984}
 6985
 6986actions!(
 6987    collab,
 6988    [
 6989        /// Opens the channel notes for the current call.
 6990        ///
 6991        /// If you want to open a specific channel, use `zed::OpenZedUrl` with a channel notes URL -
 6992        /// can be copied via "Copy link to section" in the context menu of the channel notes
 6993        /// buffer. These URLs look like `https://zed.dev/channel/channel-name-CHANNEL_ID/notes`.
 6994        OpenChannelNotes,
 6995        /// Mutes your microphone.
 6996        Mute,
 6997        /// Deafens yourself (mute both microphone and speakers).
 6998        Deafen,
 6999        /// Leaves the current call.
 7000        LeaveCall,
 7001        /// Shares the current project with collaborators.
 7002        ShareProject,
 7003        /// Shares your screen with collaborators.
 7004        ScreenShare
 7005    ]
 7006);
 7007actions!(
 7008    zed,
 7009    [
 7010        /// Opens the Zed log file.
 7011        OpenLog
 7012    ]
 7013);
 7014
 7015async fn join_channel_internal(
 7016    channel_id: ChannelId,
 7017    app_state: &Arc<AppState>,
 7018    requesting_window: Option<WindowHandle<Workspace>>,
 7019    active_call: &Entity<ActiveCall>,
 7020    cx: &mut AsyncApp,
 7021) -> Result<bool> {
 7022    let (should_prompt, open_room) = active_call.update(cx, |active_call, cx| {
 7023        let Some(room) = active_call.room().map(|room| room.read(cx)) else {
 7024            return (false, None);
 7025        };
 7026
 7027        let already_in_channel = room.channel_id() == Some(channel_id);
 7028        let should_prompt = room.is_sharing_project()
 7029            && !room.remote_participants().is_empty()
 7030            && !already_in_channel;
 7031        let open_room = if already_in_channel {
 7032            active_call.room().cloned()
 7033        } else {
 7034            None
 7035        };
 7036        (should_prompt, open_room)
 7037    })?;
 7038
 7039    if let Some(room) = open_room {
 7040        let task = room.update(cx, |room, cx| {
 7041            if let Some((project, host)) = room.most_active_project(cx) {
 7042                return Some(join_in_room_project(project, host, app_state.clone(), cx));
 7043            }
 7044
 7045            None
 7046        })?;
 7047        if let Some(task) = task {
 7048            task.await?;
 7049        }
 7050        return anyhow::Ok(true);
 7051    }
 7052
 7053    if should_prompt {
 7054        if let Some(workspace) = requesting_window {
 7055            let answer = workspace
 7056                .update(cx, |_, window, cx| {
 7057                    window.prompt(
 7058                        PromptLevel::Warning,
 7059                        "Do you want to switch channels?",
 7060                        Some("Leaving this call will unshare your current project."),
 7061                        &["Yes, Join Channel", "Cancel"],
 7062                        cx,
 7063                    )
 7064                })?
 7065                .await;
 7066
 7067            if answer == Ok(1) {
 7068                return Ok(false);
 7069            }
 7070        } else {
 7071            return Ok(false); // unreachable!() hopefully
 7072        }
 7073    }
 7074
 7075    let client = cx.update(|cx| active_call.read(cx).client())?;
 7076
 7077    let mut client_status = client.status();
 7078
 7079    // this loop will terminate within client::CONNECTION_TIMEOUT seconds.
 7080    'outer: loop {
 7081        let Some(status) = client_status.recv().await else {
 7082            anyhow::bail!("error connecting");
 7083        };
 7084
 7085        match status {
 7086            Status::Connecting
 7087            | Status::Authenticating
 7088            | Status::Authenticated
 7089            | Status::Reconnecting
 7090            | Status::Reauthenticating
 7091            | Status::Reauthenticated => continue,
 7092            Status::Connected { .. } => break 'outer,
 7093            Status::SignedOut | Status::AuthenticationError => {
 7094                return Err(ErrorCode::SignedOut.into());
 7095            }
 7096            Status::UpgradeRequired => return Err(ErrorCode::UpgradeRequired.into()),
 7097            Status::ConnectionError | Status::ConnectionLost | Status::ReconnectionError { .. } => {
 7098                return Err(ErrorCode::Disconnected.into());
 7099            }
 7100        }
 7101    }
 7102
 7103    let room = active_call
 7104        .update(cx, |active_call, cx| {
 7105            active_call.join_channel(channel_id, cx)
 7106        })?
 7107        .await?;
 7108
 7109    let Some(room) = room else {
 7110        return anyhow::Ok(true);
 7111    };
 7112
 7113    room.update(cx, |room, _| room.room_update_completed())?
 7114        .await;
 7115
 7116    let task = room.update(cx, |room, cx| {
 7117        if let Some((project, host)) = room.most_active_project(cx) {
 7118            return Some(join_in_room_project(project, host, app_state.clone(), cx));
 7119        }
 7120
 7121        // If you are the first to join a channel, see if you should share your project.
 7122        if room.remote_participants().is_empty()
 7123            && !room.local_participant_is_guest()
 7124            && let Some(workspace) = requesting_window
 7125        {
 7126            let project = workspace.update(cx, |workspace, _, cx| {
 7127                let project = workspace.project.read(cx);
 7128
 7129                if !CallSettings::get_global(cx).share_on_join {
 7130                    return None;
 7131                }
 7132
 7133                if (project.is_local() || project.is_via_remote_server())
 7134                    && project.visible_worktrees(cx).any(|tree| {
 7135                        tree.read(cx)
 7136                            .root_entry()
 7137                            .is_some_and(|entry| entry.is_dir())
 7138                    })
 7139                {
 7140                    Some(workspace.project.clone())
 7141                } else {
 7142                    None
 7143                }
 7144            });
 7145            if let Ok(Some(project)) = project {
 7146                return Some(cx.spawn(async move |room, cx| {
 7147                    room.update(cx, |room, cx| room.share_project(project, cx))?
 7148                        .await?;
 7149                    Ok(())
 7150                }));
 7151            }
 7152        }
 7153
 7154        None
 7155    })?;
 7156    if let Some(task) = task {
 7157        task.await?;
 7158        return anyhow::Ok(true);
 7159    }
 7160    anyhow::Ok(false)
 7161}
 7162
 7163pub fn join_channel(
 7164    channel_id: ChannelId,
 7165    app_state: Arc<AppState>,
 7166    requesting_window: Option<WindowHandle<Workspace>>,
 7167    cx: &mut App,
 7168) -> Task<Result<()>> {
 7169    let active_call = ActiveCall::global(cx);
 7170    cx.spawn(async move |cx| {
 7171        let result = join_channel_internal(
 7172            channel_id,
 7173            &app_state,
 7174            requesting_window,
 7175            &active_call,
 7176             cx,
 7177        )
 7178            .await;
 7179
 7180        // join channel succeeded, and opened a window
 7181        if matches!(result, Ok(true)) {
 7182            return anyhow::Ok(());
 7183        }
 7184
 7185        // find an existing workspace to focus and show call controls
 7186        let mut active_window =
 7187            requesting_window.or_else(|| activate_any_workspace_window( cx));
 7188        if active_window.is_none() {
 7189            // no open workspaces, make one to show the error in (blergh)
 7190            let (window_handle, _) = cx
 7191                .update(|cx| {
 7192                    Workspace::new_local(vec![], app_state.clone(), requesting_window, None, cx)
 7193                })?
 7194                .await?;
 7195
 7196            if result.is_ok() {
 7197                cx.update(|cx| {
 7198                    cx.dispatch_action(&OpenChannelNotes);
 7199                }).log_err();
 7200            }
 7201
 7202            active_window = Some(window_handle);
 7203        }
 7204
 7205        if let Err(err) = result {
 7206            log::error!("failed to join channel: {}", err);
 7207            if let Some(active_window) = active_window {
 7208                active_window
 7209                    .update(cx, |_, window, cx| {
 7210                        let detail: SharedString = match err.error_code() {
 7211                            ErrorCode::SignedOut => {
 7212                                "Please sign in to continue.".into()
 7213                            }
 7214                            ErrorCode::UpgradeRequired => {
 7215                                "Your are running an unsupported version of Zed. Please update to continue.".into()
 7216                            }
 7217                            ErrorCode::NoSuchChannel => {
 7218                                "No matching channel was found. Please check the link and try again.".into()
 7219                            }
 7220                            ErrorCode::Forbidden => {
 7221                                "This channel is private, and you do not have access. Please ask someone to add you and try again.".into()
 7222                            }
 7223                            ErrorCode::Disconnected => "Please check your internet connection and try again.".into(),
 7224                            _ => format!("{}\n\nPlease try again.", err).into(),
 7225                        };
 7226                        window.prompt(
 7227                            PromptLevel::Critical,
 7228                            "Failed to join channel",
 7229                            Some(&detail),
 7230                            &["Ok"],
 7231                        cx)
 7232                    })?
 7233                    .await
 7234                    .ok();
 7235            }
 7236        }
 7237
 7238        // return ok, we showed the error to the user.
 7239        anyhow::Ok(())
 7240    })
 7241}
 7242
 7243pub async fn get_any_active_workspace(
 7244    app_state: Arc<AppState>,
 7245    mut cx: AsyncApp,
 7246) -> anyhow::Result<WindowHandle<Workspace>> {
 7247    // find an existing workspace to focus and show call controls
 7248    let active_window = activate_any_workspace_window(&mut cx);
 7249    if active_window.is_none() {
 7250        cx.update(|cx| Workspace::new_local(vec![], app_state.clone(), None, None, cx))?
 7251            .await?;
 7252    }
 7253    activate_any_workspace_window(&mut cx).context("could not open zed")
 7254}
 7255
 7256fn activate_any_workspace_window(cx: &mut AsyncApp) -> Option<WindowHandle<Workspace>> {
 7257    cx.update(|cx| {
 7258        if let Some(workspace_window) = cx
 7259            .active_window()
 7260            .and_then(|window| window.downcast::<Workspace>())
 7261        {
 7262            return Some(workspace_window);
 7263        }
 7264
 7265        for window in cx.windows() {
 7266            if let Some(workspace_window) = window.downcast::<Workspace>() {
 7267                workspace_window
 7268                    .update(cx, |_, window, _| window.activate_window())
 7269                    .ok();
 7270                return Some(workspace_window);
 7271            }
 7272        }
 7273        None
 7274    })
 7275    .ok()
 7276    .flatten()
 7277}
 7278
 7279pub fn local_workspace_windows(cx: &App) -> Vec<WindowHandle<Workspace>> {
 7280    cx.windows()
 7281        .into_iter()
 7282        .filter_map(|window| window.downcast::<Workspace>())
 7283        .filter(|workspace| {
 7284            workspace
 7285                .read(cx)
 7286                .is_ok_and(|workspace| workspace.project.read(cx).is_local())
 7287        })
 7288        .collect()
 7289}
 7290
 7291#[derive(Default)]
 7292pub struct OpenOptions {
 7293    pub visible: Option<OpenVisible>,
 7294    pub focus: Option<bool>,
 7295    pub open_new_workspace: Option<bool>,
 7296    pub replace_window: Option<WindowHandle<Workspace>>,
 7297    pub env: Option<HashMap<String, String>>,
 7298}
 7299
 7300#[allow(clippy::type_complexity)]
 7301pub fn open_paths(
 7302    abs_paths: &[PathBuf],
 7303    app_state: Arc<AppState>,
 7304    open_options: OpenOptions,
 7305    cx: &mut App,
 7306) -> Task<
 7307    anyhow::Result<(
 7308        WindowHandle<Workspace>,
 7309        Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 7310    )>,
 7311> {
 7312    let abs_paths = abs_paths.to_vec();
 7313    let mut existing = None;
 7314    let mut best_match = None;
 7315    let mut open_visible = OpenVisible::All;
 7316
 7317    cx.spawn(async move |cx| {
 7318        if open_options.open_new_workspace != Some(true) {
 7319            let all_paths = abs_paths.iter().map(|path| app_state.fs.metadata(path));
 7320            let all_metadatas = futures::future::join_all(all_paths)
 7321                .await
 7322                .into_iter()
 7323                .filter_map(|result| result.ok().flatten())
 7324                .collect::<Vec<_>>();
 7325
 7326            cx.update(|cx| {
 7327                for window in local_workspace_windows(cx) {
 7328                    if let Ok(workspace) = window.read(cx) {
 7329                        let m = workspace.project.read(cx).visibility_for_paths(
 7330                            &abs_paths,
 7331                            &all_metadatas,
 7332                            open_options.open_new_workspace == None,
 7333                            cx,
 7334                        );
 7335                        if m > best_match {
 7336                            existing = Some(window);
 7337                            best_match = m;
 7338                        } else if best_match.is_none()
 7339                            && open_options.open_new_workspace == Some(false)
 7340                        {
 7341                            existing = Some(window)
 7342                        }
 7343                    }
 7344                }
 7345            })?;
 7346
 7347            if open_options.open_new_workspace.is_none()
 7348                && existing.is_none()
 7349                && all_metadatas.iter().all(|file| !file.is_dir)
 7350            {
 7351                cx.update(|cx| {
 7352                    if let Some(window) = cx
 7353                        .active_window()
 7354                        .and_then(|window| window.downcast::<Workspace>())
 7355                        && let Ok(workspace) = window.read(cx)
 7356                    {
 7357                        let project = workspace.project().read(cx);
 7358                        if project.is_local() && !project.is_via_collab() {
 7359                            existing = Some(window);
 7360                            open_visible = OpenVisible::None;
 7361                            return;
 7362                        }
 7363                    }
 7364                    for window in local_workspace_windows(cx) {
 7365                        if let Ok(workspace) = window.read(cx) {
 7366                            let project = workspace.project().read(cx);
 7367                            if project.is_via_collab() {
 7368                                continue;
 7369                            }
 7370                            existing = Some(window);
 7371                            open_visible = OpenVisible::None;
 7372                            break;
 7373                        }
 7374                    }
 7375                })?;
 7376            }
 7377        }
 7378
 7379        if let Some(existing) = existing {
 7380            let open_task = existing
 7381                .update(cx, |workspace, window, cx| {
 7382                    window.activate_window();
 7383                    workspace.open_paths(
 7384                        abs_paths,
 7385                        OpenOptions {
 7386                            visible: Some(open_visible),
 7387                            ..Default::default()
 7388                        },
 7389                        None,
 7390                        window,
 7391                        cx,
 7392                    )
 7393                })?
 7394                .await;
 7395
 7396            _ = existing.update(cx, |workspace, _, cx| {
 7397                for item in open_task.iter().flatten() {
 7398                    if let Err(e) = item {
 7399                        workspace.show_error(&e, cx);
 7400                    }
 7401                }
 7402            });
 7403
 7404            Ok((existing, open_task))
 7405        } else {
 7406            cx.update(move |cx| {
 7407                Workspace::new_local(
 7408                    abs_paths,
 7409                    app_state.clone(),
 7410                    open_options.replace_window,
 7411                    open_options.env,
 7412                    cx,
 7413                )
 7414            })?
 7415            .await
 7416        }
 7417    })
 7418}
 7419
 7420pub fn open_new(
 7421    open_options: OpenOptions,
 7422    app_state: Arc<AppState>,
 7423    cx: &mut App,
 7424    init: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + 'static + Send,
 7425) -> Task<anyhow::Result<()>> {
 7426    let task = Workspace::new_local(Vec::new(), app_state, None, open_options.env, cx);
 7427    cx.spawn(async move |cx| {
 7428        let (workspace, opened_paths) = task.await?;
 7429        workspace.update(cx, |workspace, window, cx| {
 7430            if opened_paths.is_empty() {
 7431                init(workspace, window, cx)
 7432            }
 7433        })?;
 7434        Ok(())
 7435    })
 7436}
 7437
 7438pub fn create_and_open_local_file(
 7439    path: &'static Path,
 7440    window: &mut Window,
 7441    cx: &mut Context<Workspace>,
 7442    default_content: impl 'static + Send + FnOnce() -> Rope,
 7443) -> Task<Result<Box<dyn ItemHandle>>> {
 7444    cx.spawn_in(window, async move |workspace, cx| {
 7445        let fs = workspace.read_with(cx, |workspace, _| workspace.app_state().fs.clone())?;
 7446        if !fs.is_file(path).await {
 7447            fs.create_file(path, Default::default()).await?;
 7448            fs.save(path, &default_content(), Default::default())
 7449                .await?;
 7450        }
 7451
 7452        let mut items = workspace
 7453            .update_in(cx, |workspace, window, cx| {
 7454                workspace.with_local_workspace(window, cx, |workspace, window, cx| {
 7455                    workspace.open_paths(
 7456                        vec![path.to_path_buf()],
 7457                        OpenOptions {
 7458                            visible: Some(OpenVisible::None),
 7459                            ..Default::default()
 7460                        },
 7461                        None,
 7462                        window,
 7463                        cx,
 7464                    )
 7465                })
 7466            })?
 7467            .await?
 7468            .await;
 7469
 7470        let item = items.pop().flatten();
 7471        item.with_context(|| format!("path {path:?} is not a file"))?
 7472    })
 7473}
 7474
 7475pub fn open_remote_project_with_new_connection(
 7476    window: WindowHandle<Workspace>,
 7477    remote_connection: Arc<dyn RemoteConnection>,
 7478    cancel_rx: oneshot::Receiver<()>,
 7479    delegate: Arc<dyn RemoteClientDelegate>,
 7480    app_state: Arc<AppState>,
 7481    paths: Vec<PathBuf>,
 7482    cx: &mut App,
 7483) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 7484    cx.spawn(async move |cx| {
 7485        let (workspace_id, serialized_workspace) =
 7486            serialize_remote_project(remote_connection.connection_options(), paths.clone(), cx)
 7487                .await?;
 7488
 7489        let session = match cx
 7490            .update(|cx| {
 7491                remote::RemoteClient::new(
 7492                    ConnectionIdentifier::Workspace(workspace_id.0),
 7493                    remote_connection,
 7494                    cancel_rx,
 7495                    delegate,
 7496                    cx,
 7497                )
 7498            })?
 7499            .await?
 7500        {
 7501            Some(result) => result,
 7502            None => return Ok(Vec::new()),
 7503        };
 7504
 7505        let project = cx.update(|cx| {
 7506            project::Project::remote(
 7507                session,
 7508                app_state.client.clone(),
 7509                app_state.node_runtime.clone(),
 7510                app_state.user_store.clone(),
 7511                app_state.languages.clone(),
 7512                app_state.fs.clone(),
 7513                cx,
 7514            )
 7515        })?;
 7516
 7517        open_remote_project_inner(
 7518            project,
 7519            paths,
 7520            workspace_id,
 7521            serialized_workspace,
 7522            app_state,
 7523            window,
 7524            cx,
 7525        )
 7526        .await
 7527    })
 7528}
 7529
 7530pub fn open_remote_project_with_existing_connection(
 7531    connection_options: RemoteConnectionOptions,
 7532    project: Entity<Project>,
 7533    paths: Vec<PathBuf>,
 7534    app_state: Arc<AppState>,
 7535    window: WindowHandle<Workspace>,
 7536    cx: &mut AsyncApp,
 7537) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 7538    cx.spawn(async move |cx| {
 7539        let (workspace_id, serialized_workspace) =
 7540            serialize_remote_project(connection_options.clone(), paths.clone(), cx).await?;
 7541
 7542        open_remote_project_inner(
 7543            project,
 7544            paths,
 7545            workspace_id,
 7546            serialized_workspace,
 7547            app_state,
 7548            window,
 7549            cx,
 7550        )
 7551        .await
 7552    })
 7553}
 7554
 7555async fn open_remote_project_inner(
 7556    project: Entity<Project>,
 7557    paths: Vec<PathBuf>,
 7558    workspace_id: WorkspaceId,
 7559    serialized_workspace: Option<SerializedWorkspace>,
 7560    app_state: Arc<AppState>,
 7561    window: WindowHandle<Workspace>,
 7562    cx: &mut AsyncApp,
 7563) -> Result<Vec<Option<Box<dyn ItemHandle>>>> {
 7564    let toolchains = DB.toolchains(workspace_id).await?;
 7565    for (toolchain, worktree_id, path) in toolchains {
 7566        project
 7567            .update(cx, |this, cx| {
 7568                this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 7569            })?
 7570            .await;
 7571    }
 7572    let mut project_paths_to_open = vec![];
 7573    let mut project_path_errors = vec![];
 7574
 7575    for path in paths {
 7576        let result = cx
 7577            .update(|cx| Workspace::project_path_for_path(project.clone(), &path, true, cx))?
 7578            .await;
 7579        match result {
 7580            Ok((_, project_path)) => {
 7581                project_paths_to_open.push((path.clone(), Some(project_path)));
 7582            }
 7583            Err(error) => {
 7584                project_path_errors.push(error);
 7585            }
 7586        };
 7587    }
 7588
 7589    if project_paths_to_open.is_empty() {
 7590        return Err(project_path_errors.pop().context("no paths given")?);
 7591    }
 7592
 7593    if let Some(detach_session_task) = window
 7594        .update(cx, |_workspace, window, cx| {
 7595            cx.spawn_in(window, async move |this, cx| {
 7596                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))
 7597            })
 7598        })
 7599        .ok()
 7600    {
 7601        detach_session_task.await.ok();
 7602    }
 7603
 7604    cx.update_window(window.into(), |_, window, cx| {
 7605        window.replace_root(cx, |window, cx| {
 7606            telemetry::event!("SSH Project Opened");
 7607
 7608            let mut workspace =
 7609                Workspace::new(Some(workspace_id), project, app_state.clone(), window, cx);
 7610            workspace.update_history(cx);
 7611
 7612            if let Some(ref serialized) = serialized_workspace {
 7613                workspace.centered_layout = serialized.centered_layout;
 7614            }
 7615
 7616            workspace
 7617        });
 7618    })?;
 7619
 7620    let items = window
 7621        .update(cx, |_, window, cx| {
 7622            window.activate_window();
 7623            open_items(serialized_workspace, project_paths_to_open, window, cx)
 7624        })?
 7625        .await?;
 7626
 7627    window.update(cx, |workspace, _, cx| {
 7628        for error in project_path_errors {
 7629            if error.error_code() == proto::ErrorCode::DevServerProjectPathDoesNotExist {
 7630                if let Some(path) = error.error_tag("path") {
 7631                    workspace.show_error(&anyhow!("'{path}' does not exist"), cx)
 7632                }
 7633            } else {
 7634                workspace.show_error(&error, cx)
 7635            }
 7636        }
 7637    })?;
 7638
 7639    Ok(items.into_iter().map(|item| item?.ok()).collect())
 7640}
 7641
 7642fn serialize_remote_project(
 7643    connection_options: RemoteConnectionOptions,
 7644    paths: Vec<PathBuf>,
 7645    cx: &AsyncApp,
 7646) -> Task<Result<(WorkspaceId, Option<SerializedWorkspace>)>> {
 7647    cx.background_spawn(async move {
 7648        let remote_connection_id = persistence::DB
 7649            .get_or_create_remote_connection(connection_options)
 7650            .await?;
 7651
 7652        let serialized_workspace =
 7653            persistence::DB.remote_workspace_for_roots(&paths, remote_connection_id);
 7654
 7655        let workspace_id = if let Some(workspace_id) =
 7656            serialized_workspace.as_ref().map(|workspace| workspace.id)
 7657        {
 7658            workspace_id
 7659        } else {
 7660            persistence::DB.next_id().await?
 7661        };
 7662
 7663        Ok((workspace_id, serialized_workspace))
 7664    })
 7665}
 7666
 7667pub fn join_in_room_project(
 7668    project_id: u64,
 7669    follow_user_id: u64,
 7670    app_state: Arc<AppState>,
 7671    cx: &mut App,
 7672) -> Task<Result<()>> {
 7673    let windows = cx.windows();
 7674    cx.spawn(async move |cx| {
 7675        let existing_workspace = windows.into_iter().find_map(|window_handle| {
 7676            window_handle
 7677                .downcast::<Workspace>()
 7678                .and_then(|window_handle| {
 7679                    window_handle
 7680                        .update(cx, |workspace, _window, cx| {
 7681                            if workspace.project().read(cx).remote_id() == Some(project_id) {
 7682                                Some(window_handle)
 7683                            } else {
 7684                                None
 7685                            }
 7686                        })
 7687                        .unwrap_or(None)
 7688                })
 7689        });
 7690
 7691        let workspace = if let Some(existing_workspace) = existing_workspace {
 7692            existing_workspace
 7693        } else {
 7694            let active_call = cx.update(|cx| ActiveCall::global(cx))?;
 7695            let room = active_call
 7696                .read_with(cx, |call, _| call.room().cloned())?
 7697                .context("not in a call")?;
 7698            let project = room
 7699                .update(cx, |room, cx| {
 7700                    room.join_project(
 7701                        project_id,
 7702                        app_state.languages.clone(),
 7703                        app_state.fs.clone(),
 7704                        cx,
 7705                    )
 7706                })?
 7707                .await?;
 7708
 7709            let window_bounds_override = window_bounds_env_override();
 7710            cx.update(|cx| {
 7711                let mut options = (app_state.build_window_options)(None, cx);
 7712                options.window_bounds = window_bounds_override.map(WindowBounds::Windowed);
 7713                cx.open_window(options, |window, cx| {
 7714                    cx.new(|cx| {
 7715                        Workspace::new(Default::default(), project, app_state.clone(), window, cx)
 7716                    })
 7717                })
 7718            })??
 7719        };
 7720
 7721        workspace.update(cx, |workspace, window, cx| {
 7722            cx.activate(true);
 7723            window.activate_window();
 7724
 7725            if let Some(room) = ActiveCall::global(cx).read(cx).room().cloned() {
 7726                let follow_peer_id = room
 7727                    .read(cx)
 7728                    .remote_participants()
 7729                    .iter()
 7730                    .find(|(_, participant)| participant.user.id == follow_user_id)
 7731                    .map(|(_, p)| p.peer_id)
 7732                    .or_else(|| {
 7733                        // If we couldn't follow the given user, follow the host instead.
 7734                        let collaborator = workspace
 7735                            .project()
 7736                            .read(cx)
 7737                            .collaborators()
 7738                            .values()
 7739                            .find(|collaborator| collaborator.is_host)?;
 7740                        Some(collaborator.peer_id)
 7741                    });
 7742
 7743                if let Some(follow_peer_id) = follow_peer_id {
 7744                    workspace.follow(follow_peer_id, window, cx);
 7745                }
 7746            }
 7747        })?;
 7748
 7749        anyhow::Ok(())
 7750    })
 7751}
 7752
 7753pub fn reload(cx: &mut App) {
 7754    let should_confirm = WorkspaceSettings::get_global(cx).confirm_quit;
 7755    let mut workspace_windows = cx
 7756        .windows()
 7757        .into_iter()
 7758        .filter_map(|window| window.downcast::<Workspace>())
 7759        .collect::<Vec<_>>();
 7760
 7761    // If multiple windows have unsaved changes, and need a save prompt,
 7762    // prompt in the active window before switching to a different window.
 7763    workspace_windows.sort_by_key(|window| window.is_active(cx) == Some(false));
 7764
 7765    let mut prompt = None;
 7766    if let (true, Some(window)) = (should_confirm, workspace_windows.first()) {
 7767        prompt = window
 7768            .update(cx, |_, window, cx| {
 7769                window.prompt(
 7770                    PromptLevel::Info,
 7771                    "Are you sure you want to restart?",
 7772                    None,
 7773                    &["Restart", "Cancel"],
 7774                    cx,
 7775                )
 7776            })
 7777            .ok();
 7778    }
 7779
 7780    cx.spawn(async move |cx| {
 7781        if let Some(prompt) = prompt {
 7782            let answer = prompt.await?;
 7783            if answer != 0 {
 7784                return Ok(());
 7785            }
 7786        }
 7787
 7788        // If the user cancels any save prompt, then keep the app open.
 7789        for window in workspace_windows {
 7790            if let Ok(should_close) = window.update(cx, |workspace, window, cx| {
 7791                workspace.prepare_to_close(CloseIntent::Quit, window, cx)
 7792            }) && !should_close.await?
 7793            {
 7794                return Ok(());
 7795            }
 7796        }
 7797        cx.update(|cx| cx.restart())
 7798    })
 7799    .detach_and_log_err(cx);
 7800}
 7801
 7802fn parse_pixel_position_env_var(value: &str) -> Option<Point<Pixels>> {
 7803    let mut parts = value.split(',');
 7804    let x: usize = parts.next()?.parse().ok()?;
 7805    let y: usize = parts.next()?.parse().ok()?;
 7806    Some(point(px(x as f32), px(y as f32)))
 7807}
 7808
 7809fn parse_pixel_size_env_var(value: &str) -> Option<Size<Pixels>> {
 7810    let mut parts = value.split(',');
 7811    let width: usize = parts.next()?.parse().ok()?;
 7812    let height: usize = parts.next()?.parse().ok()?;
 7813    Some(size(px(width as f32), px(height as f32)))
 7814}
 7815
 7816/// Add client-side decorations (rounded corners, shadows, resize handling) when appropriate.
 7817pub fn client_side_decorations(
 7818    element: impl IntoElement,
 7819    window: &mut Window,
 7820    cx: &mut App,
 7821) -> Stateful<Div> {
 7822    const BORDER_SIZE: Pixels = px(1.0);
 7823    let decorations = window.window_decorations();
 7824
 7825    match decorations {
 7826        Decorations::Client { .. } => window.set_client_inset(theme::CLIENT_SIDE_DECORATION_SHADOW),
 7827        Decorations::Server => window.set_client_inset(px(0.0)),
 7828    }
 7829
 7830    struct GlobalResizeEdge(ResizeEdge);
 7831    impl Global for GlobalResizeEdge {}
 7832
 7833    div()
 7834        .id("window-backdrop")
 7835        .bg(transparent_black())
 7836        .map(|div| match decorations {
 7837            Decorations::Server => div,
 7838            Decorations::Client { tiling, .. } => div
 7839                .when(!(tiling.top || tiling.right), |div| {
 7840                    div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7841                })
 7842                .when(!(tiling.top || tiling.left), |div| {
 7843                    div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7844                })
 7845                .when(!(tiling.bottom || tiling.right), |div| {
 7846                    div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7847                })
 7848                .when(!(tiling.bottom || tiling.left), |div| {
 7849                    div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7850                })
 7851                .when(!tiling.top, |div| {
 7852                    div.pt(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7853                })
 7854                .when(!tiling.bottom, |div| {
 7855                    div.pb(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7856                })
 7857                .when(!tiling.left, |div| {
 7858                    div.pl(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7859                })
 7860                .when(!tiling.right, |div| {
 7861                    div.pr(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7862                })
 7863                .on_mouse_move(move |e, window, cx| {
 7864                    let size = window.window_bounds().get_bounds().size;
 7865                    let pos = e.position;
 7866
 7867                    let new_edge =
 7868                        resize_edge(pos, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling);
 7869
 7870                    let edge = cx.try_global::<GlobalResizeEdge>();
 7871                    if new_edge != edge.map(|edge| edge.0) {
 7872                        window
 7873                            .window_handle()
 7874                            .update(cx, |workspace, _, cx| {
 7875                                cx.notify(workspace.entity_id());
 7876                            })
 7877                            .ok();
 7878                    }
 7879                })
 7880                .on_mouse_down(MouseButton::Left, move |e, window, _| {
 7881                    let size = window.window_bounds().get_bounds().size;
 7882                    let pos = e.position;
 7883
 7884                    let edge = match resize_edge(
 7885                        pos,
 7886                        theme::CLIENT_SIDE_DECORATION_SHADOW,
 7887                        size,
 7888                        tiling,
 7889                    ) {
 7890                        Some(value) => value,
 7891                        None => return,
 7892                    };
 7893
 7894                    window.start_window_resize(edge);
 7895                }),
 7896        })
 7897        .size_full()
 7898        .child(
 7899            div()
 7900                .cursor(CursorStyle::Arrow)
 7901                .map(|div| match decorations {
 7902                    Decorations::Server => div,
 7903                    Decorations::Client { tiling } => div
 7904                        .border_color(cx.theme().colors().border)
 7905                        .when(!(tiling.top || tiling.right), |div| {
 7906                            div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7907                        })
 7908                        .when(!(tiling.top || tiling.left), |div| {
 7909                            div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7910                        })
 7911                        .when(!(tiling.bottom || tiling.right), |div| {
 7912                            div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7913                        })
 7914                        .when(!(tiling.bottom || tiling.left), |div| {
 7915                            div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7916                        })
 7917                        .when(!tiling.top, |div| div.border_t(BORDER_SIZE))
 7918                        .when(!tiling.bottom, |div| div.border_b(BORDER_SIZE))
 7919                        .when(!tiling.left, |div| div.border_l(BORDER_SIZE))
 7920                        .when(!tiling.right, |div| div.border_r(BORDER_SIZE))
 7921                        .when(!tiling.is_tiled(), |div| {
 7922                            div.shadow(vec![gpui::BoxShadow {
 7923                                color: Hsla {
 7924                                    h: 0.,
 7925                                    s: 0.,
 7926                                    l: 0.,
 7927                                    a: 0.4,
 7928                                },
 7929                                blur_radius: theme::CLIENT_SIDE_DECORATION_SHADOW / 2.,
 7930                                spread_radius: px(0.),
 7931                                offset: point(px(0.0), px(0.0)),
 7932                            }])
 7933                        }),
 7934                })
 7935                .on_mouse_move(|_e, _, cx| {
 7936                    cx.stop_propagation();
 7937                })
 7938                .size_full()
 7939                .child(element),
 7940        )
 7941        .map(|div| match decorations {
 7942            Decorations::Server => div,
 7943            Decorations::Client { tiling, .. } => div.child(
 7944                canvas(
 7945                    |_bounds, window, _| {
 7946                        window.insert_hitbox(
 7947                            Bounds::new(
 7948                                point(px(0.0), px(0.0)),
 7949                                window.window_bounds().get_bounds().size,
 7950                            ),
 7951                            HitboxBehavior::Normal,
 7952                        )
 7953                    },
 7954                    move |_bounds, hitbox, window, cx| {
 7955                        let mouse = window.mouse_position();
 7956                        let size = window.window_bounds().get_bounds().size;
 7957                        let Some(edge) =
 7958                            resize_edge(mouse, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling)
 7959                        else {
 7960                            return;
 7961                        };
 7962                        cx.set_global(GlobalResizeEdge(edge));
 7963                        window.set_cursor_style(
 7964                            match edge {
 7965                                ResizeEdge::Top | ResizeEdge::Bottom => CursorStyle::ResizeUpDown,
 7966                                ResizeEdge::Left | ResizeEdge::Right => {
 7967                                    CursorStyle::ResizeLeftRight
 7968                                }
 7969                                ResizeEdge::TopLeft | ResizeEdge::BottomRight => {
 7970                                    CursorStyle::ResizeUpLeftDownRight
 7971                                }
 7972                                ResizeEdge::TopRight | ResizeEdge::BottomLeft => {
 7973                                    CursorStyle::ResizeUpRightDownLeft
 7974                                }
 7975                            },
 7976                            &hitbox,
 7977                        );
 7978                    },
 7979                )
 7980                .size_full()
 7981                .absolute(),
 7982            ),
 7983        })
 7984}
 7985
 7986fn resize_edge(
 7987    pos: Point<Pixels>,
 7988    shadow_size: Pixels,
 7989    window_size: Size<Pixels>,
 7990    tiling: Tiling,
 7991) -> Option<ResizeEdge> {
 7992    let bounds = Bounds::new(Point::default(), window_size).inset(shadow_size * 1.5);
 7993    if bounds.contains(&pos) {
 7994        return None;
 7995    }
 7996
 7997    let corner_size = size(shadow_size * 1.5, shadow_size * 1.5);
 7998    let top_left_bounds = Bounds::new(Point::new(px(0.), px(0.)), corner_size);
 7999    if !tiling.top && top_left_bounds.contains(&pos) {
 8000        return Some(ResizeEdge::TopLeft);
 8001    }
 8002
 8003    let top_right_bounds = Bounds::new(
 8004        Point::new(window_size.width - corner_size.width, px(0.)),
 8005        corner_size,
 8006    );
 8007    if !tiling.top && top_right_bounds.contains(&pos) {
 8008        return Some(ResizeEdge::TopRight);
 8009    }
 8010
 8011    let bottom_left_bounds = Bounds::new(
 8012        Point::new(px(0.), window_size.height - corner_size.height),
 8013        corner_size,
 8014    );
 8015    if !tiling.bottom && bottom_left_bounds.contains(&pos) {
 8016        return Some(ResizeEdge::BottomLeft);
 8017    }
 8018
 8019    let bottom_right_bounds = Bounds::new(
 8020        Point::new(
 8021            window_size.width - corner_size.width,
 8022            window_size.height - corner_size.height,
 8023        ),
 8024        corner_size,
 8025    );
 8026    if !tiling.bottom && bottom_right_bounds.contains(&pos) {
 8027        return Some(ResizeEdge::BottomRight);
 8028    }
 8029
 8030    if !tiling.top && pos.y < shadow_size {
 8031        Some(ResizeEdge::Top)
 8032    } else if !tiling.bottom && pos.y > window_size.height - shadow_size {
 8033        Some(ResizeEdge::Bottom)
 8034    } else if !tiling.left && pos.x < shadow_size {
 8035        Some(ResizeEdge::Left)
 8036    } else if !tiling.right && pos.x > window_size.width - shadow_size {
 8037        Some(ResizeEdge::Right)
 8038    } else {
 8039        None
 8040    }
 8041}
 8042
 8043fn join_pane_into_active(
 8044    active_pane: &Entity<Pane>,
 8045    pane: &Entity<Pane>,
 8046    window: &mut Window,
 8047    cx: &mut App,
 8048) {
 8049    if pane == active_pane {
 8050    } else if pane.read(cx).items_len() == 0 {
 8051        pane.update(cx, |_, cx| {
 8052            cx.emit(pane::Event::Remove {
 8053                focus_on_pane: None,
 8054            });
 8055        })
 8056    } else {
 8057        move_all_items(pane, active_pane, window, cx);
 8058    }
 8059}
 8060
 8061fn move_all_items(
 8062    from_pane: &Entity<Pane>,
 8063    to_pane: &Entity<Pane>,
 8064    window: &mut Window,
 8065    cx: &mut App,
 8066) {
 8067    let destination_is_different = from_pane != to_pane;
 8068    let mut moved_items = 0;
 8069    for (item_ix, item_handle) in from_pane
 8070        .read(cx)
 8071        .items()
 8072        .enumerate()
 8073        .map(|(ix, item)| (ix, item.clone()))
 8074        .collect::<Vec<_>>()
 8075    {
 8076        let ix = item_ix - moved_items;
 8077        if destination_is_different {
 8078            // Close item from previous pane
 8079            from_pane.update(cx, |source, cx| {
 8080                source.remove_item_and_focus_on_pane(ix, false, to_pane.clone(), window, cx);
 8081            });
 8082            moved_items += 1;
 8083        }
 8084
 8085        // This automatically removes duplicate items in the pane
 8086        to_pane.update(cx, |destination, cx| {
 8087            destination.add_item(item_handle, true, true, None, window, cx);
 8088            window.focus(&destination.focus_handle(cx))
 8089        });
 8090    }
 8091}
 8092
 8093pub fn move_item(
 8094    source: &Entity<Pane>,
 8095    destination: &Entity<Pane>,
 8096    item_id_to_move: EntityId,
 8097    destination_index: usize,
 8098    activate: bool,
 8099    window: &mut Window,
 8100    cx: &mut App,
 8101) {
 8102    let Some((item_ix, item_handle)) = source
 8103        .read(cx)
 8104        .items()
 8105        .enumerate()
 8106        .find(|(_, item_handle)| item_handle.item_id() == item_id_to_move)
 8107        .map(|(ix, item)| (ix, item.clone()))
 8108    else {
 8109        // Tab was closed during drag
 8110        return;
 8111    };
 8112
 8113    if source != destination {
 8114        // Close item from previous pane
 8115        source.update(cx, |source, cx| {
 8116            source.remove_item_and_focus_on_pane(item_ix, false, destination.clone(), window, cx);
 8117        });
 8118    }
 8119
 8120    // This automatically removes duplicate items in the pane
 8121    destination.update(cx, |destination, cx| {
 8122        destination.add_item_inner(
 8123            item_handle,
 8124            activate,
 8125            activate,
 8126            activate,
 8127            Some(destination_index),
 8128            window,
 8129            cx,
 8130        );
 8131        if activate {
 8132            window.focus(&destination.focus_handle(cx))
 8133        }
 8134    });
 8135}
 8136
 8137pub fn move_active_item(
 8138    source: &Entity<Pane>,
 8139    destination: &Entity<Pane>,
 8140    focus_destination: bool,
 8141    close_if_empty: bool,
 8142    window: &mut Window,
 8143    cx: &mut App,
 8144) {
 8145    if source == destination {
 8146        return;
 8147    }
 8148    let Some(active_item) = source.read(cx).active_item() else {
 8149        return;
 8150    };
 8151    source.update(cx, |source_pane, cx| {
 8152        let item_id = active_item.item_id();
 8153        source_pane.remove_item(item_id, false, close_if_empty, window, cx);
 8154        destination.update(cx, |target_pane, cx| {
 8155            target_pane.add_item(
 8156                active_item,
 8157                focus_destination,
 8158                focus_destination,
 8159                Some(target_pane.items_len()),
 8160                window,
 8161                cx,
 8162            );
 8163        });
 8164    });
 8165}
 8166
 8167pub fn clone_active_item(
 8168    workspace_id: Option<WorkspaceId>,
 8169    source: &Entity<Pane>,
 8170    destination: &Entity<Pane>,
 8171    focus_destination: bool,
 8172    window: &mut Window,
 8173    cx: &mut App,
 8174) {
 8175    if source == destination {
 8176        return;
 8177    }
 8178    let Some(active_item) = source.read(cx).active_item() else {
 8179        return;
 8180    };
 8181    let destination = destination.downgrade();
 8182    let task = active_item.clone_on_split(workspace_id, window, cx);
 8183    window
 8184        .spawn(cx, async move |cx| {
 8185            let Some(clone) = task.await else {
 8186                return;
 8187            };
 8188            destination
 8189                .update_in(cx, |target_pane, window, cx| {
 8190                    target_pane.add_item(
 8191                        clone,
 8192                        focus_destination,
 8193                        focus_destination,
 8194                        Some(target_pane.items_len()),
 8195                        window,
 8196                        cx,
 8197                    );
 8198                })
 8199                .log_err();
 8200        })
 8201        .detach();
 8202}
 8203
 8204#[derive(Debug)]
 8205pub struct WorkspacePosition {
 8206    pub window_bounds: Option<WindowBounds>,
 8207    pub display: Option<Uuid>,
 8208    pub centered_layout: bool,
 8209}
 8210
 8211pub fn remote_workspace_position_from_db(
 8212    connection_options: RemoteConnectionOptions,
 8213    paths_to_open: &[PathBuf],
 8214    cx: &App,
 8215) -> Task<Result<WorkspacePosition>> {
 8216    let paths = paths_to_open.to_vec();
 8217
 8218    cx.background_spawn(async move {
 8219        let remote_connection_id = persistence::DB
 8220            .get_or_create_remote_connection(connection_options)
 8221            .await
 8222            .context("fetching serialized ssh project")?;
 8223        let serialized_workspace =
 8224            persistence::DB.remote_workspace_for_roots(&paths, remote_connection_id);
 8225
 8226        let (window_bounds, display) = if let Some(bounds) = window_bounds_env_override() {
 8227            (Some(WindowBounds::Windowed(bounds)), None)
 8228        } else {
 8229            let restorable_bounds = serialized_workspace
 8230                .as_ref()
 8231                .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 8232                .or_else(|| {
 8233                    let (display, window_bounds) = DB.last_window().log_err()?;
 8234                    Some((display?, window_bounds?))
 8235                });
 8236
 8237            if let Some((serialized_display, serialized_status)) = restorable_bounds {
 8238                (Some(serialized_status.0), Some(serialized_display))
 8239            } else {
 8240                (None, None)
 8241            }
 8242        };
 8243
 8244        let centered_layout = serialized_workspace
 8245            .as_ref()
 8246            .map(|w| w.centered_layout)
 8247            .unwrap_or(false);
 8248
 8249        Ok(WorkspacePosition {
 8250            window_bounds,
 8251            display,
 8252            centered_layout,
 8253        })
 8254    })
 8255}
 8256
 8257pub fn with_active_or_new_workspace(
 8258    cx: &mut App,
 8259    f: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send + 'static,
 8260) {
 8261    match cx.active_window().and_then(|w| w.downcast::<Workspace>()) {
 8262        Some(workspace) => {
 8263            cx.defer(move |cx| {
 8264                workspace
 8265                    .update(cx, |workspace, window, cx| f(workspace, window, cx))
 8266                    .log_err();
 8267            });
 8268        }
 8269        None => {
 8270            let app_state = AppState::global(cx);
 8271            if let Some(app_state) = app_state.upgrade() {
 8272                open_new(
 8273                    OpenOptions::default(),
 8274                    app_state,
 8275                    cx,
 8276                    move |workspace, window, cx| f(workspace, window, cx),
 8277                )
 8278                .detach_and_log_err(cx);
 8279            }
 8280        }
 8281    }
 8282}
 8283
 8284#[cfg(test)]
 8285mod tests {
 8286    use std::{cell::RefCell, rc::Rc};
 8287
 8288    use super::*;
 8289    use crate::{
 8290        dock::{PanelEvent, test::TestPanel},
 8291        item::{
 8292            ItemBufferKind, ItemEvent,
 8293            test::{TestItem, TestProjectItem},
 8294        },
 8295    };
 8296    use fs::FakeFs;
 8297    use gpui::{
 8298        DismissEvent, Empty, EventEmitter, FocusHandle, Focusable, Render, TestAppContext,
 8299        UpdateGlobal, VisualTestContext, px,
 8300    };
 8301    use project::{Project, ProjectEntryId};
 8302    use serde_json::json;
 8303    use settings::SettingsStore;
 8304    use util::rel_path::rel_path;
 8305
 8306    #[gpui::test]
 8307    async fn test_tab_disambiguation(cx: &mut TestAppContext) {
 8308        init_test(cx);
 8309
 8310        let fs = FakeFs::new(cx.executor());
 8311        let project = Project::test(fs, [], cx).await;
 8312        let (workspace, cx) =
 8313            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8314
 8315        // Adding an item with no ambiguity renders the tab without detail.
 8316        let item1 = cx.new(|cx| {
 8317            let mut item = TestItem::new(cx);
 8318            item.tab_descriptions = Some(vec!["c", "b1/c", "a/b1/c"]);
 8319            item
 8320        });
 8321        workspace.update_in(cx, |workspace, window, cx| {
 8322            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8323        });
 8324        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(0)));
 8325
 8326        // Adding an item that creates ambiguity increases the level of detail on
 8327        // both tabs.
 8328        let item2 = cx.new_window_entity(|_window, cx| {
 8329            let mut item = TestItem::new(cx);
 8330            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8331            item
 8332        });
 8333        workspace.update_in(cx, |workspace, window, cx| {
 8334            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8335        });
 8336        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8337        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8338
 8339        // Adding an item that creates ambiguity increases the level of detail only
 8340        // on the ambiguous tabs. In this case, the ambiguity can't be resolved so
 8341        // we stop at the highest detail available.
 8342        let item3 = cx.new(|cx| {
 8343            let mut item = TestItem::new(cx);
 8344            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8345            item
 8346        });
 8347        workspace.update_in(cx, |workspace, window, cx| {
 8348            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8349        });
 8350        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8351        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8352        item3.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8353    }
 8354
 8355    #[gpui::test]
 8356    async fn test_tracking_active_path(cx: &mut TestAppContext) {
 8357        init_test(cx);
 8358
 8359        let fs = FakeFs::new(cx.executor());
 8360        fs.insert_tree(
 8361            "/root1",
 8362            json!({
 8363                "one.txt": "",
 8364                "two.txt": "",
 8365            }),
 8366        )
 8367        .await;
 8368        fs.insert_tree(
 8369            "/root2",
 8370            json!({
 8371                "three.txt": "",
 8372            }),
 8373        )
 8374        .await;
 8375
 8376        let project = Project::test(fs, ["root1".as_ref()], cx).await;
 8377        let (workspace, cx) =
 8378            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8379        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8380        let worktree_id = project.update(cx, |project, cx| {
 8381            project.worktrees(cx).next().unwrap().read(cx).id()
 8382        });
 8383
 8384        let item1 = cx.new(|cx| {
 8385            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
 8386        });
 8387        let item2 = cx.new(|cx| {
 8388            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "two.txt", cx)])
 8389        });
 8390
 8391        // Add an item to an empty pane
 8392        workspace.update_in(cx, |workspace, window, cx| {
 8393            workspace.add_item_to_active_pane(Box::new(item1), None, true, window, cx)
 8394        });
 8395        project.update(cx, |project, cx| {
 8396            assert_eq!(
 8397                project.active_entry(),
 8398                project
 8399                    .entry_for_path(&(worktree_id, rel_path("one.txt")).into(), cx)
 8400                    .map(|e| e.id)
 8401            );
 8402        });
 8403        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8404
 8405        // Add a second item to a non-empty pane
 8406        workspace.update_in(cx, |workspace, window, cx| {
 8407            workspace.add_item_to_active_pane(Box::new(item2), None, true, window, cx)
 8408        });
 8409        assert_eq!(cx.window_title().as_deref(), Some("root1 — two.txt"));
 8410        project.update(cx, |project, cx| {
 8411            assert_eq!(
 8412                project.active_entry(),
 8413                project
 8414                    .entry_for_path(&(worktree_id, rel_path("two.txt")).into(), cx)
 8415                    .map(|e| e.id)
 8416            );
 8417        });
 8418
 8419        // Close the active item
 8420        pane.update_in(cx, |pane, window, cx| {
 8421            pane.close_active_item(&Default::default(), window, cx)
 8422        })
 8423        .await
 8424        .unwrap();
 8425        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8426        project.update(cx, |project, cx| {
 8427            assert_eq!(
 8428                project.active_entry(),
 8429                project
 8430                    .entry_for_path(&(worktree_id, rel_path("one.txt")).into(), cx)
 8431                    .map(|e| e.id)
 8432            );
 8433        });
 8434
 8435        // Add a project folder
 8436        project
 8437            .update(cx, |project, cx| {
 8438                project.find_or_create_worktree("root2", true, cx)
 8439            })
 8440            .await
 8441            .unwrap();
 8442        assert_eq!(cx.window_title().as_deref(), Some("root1, root2 — one.txt"));
 8443
 8444        // Remove a project folder
 8445        project.update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
 8446        assert_eq!(cx.window_title().as_deref(), Some("root2 — one.txt"));
 8447    }
 8448
 8449    #[gpui::test]
 8450    async fn test_close_window(cx: &mut TestAppContext) {
 8451        init_test(cx);
 8452
 8453        let fs = FakeFs::new(cx.executor());
 8454        fs.insert_tree("/root", json!({ "one": "" })).await;
 8455
 8456        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8457        let (workspace, cx) =
 8458            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8459
 8460        // When there are no dirty items, there's nothing to do.
 8461        let item1 = cx.new(TestItem::new);
 8462        workspace.update_in(cx, |w, window, cx| {
 8463            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx)
 8464        });
 8465        let task = workspace.update_in(cx, |w, window, cx| {
 8466            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8467        });
 8468        assert!(task.await.unwrap());
 8469
 8470        // When there are dirty untitled items, prompt to save each one. If the user
 8471        // cancels any prompt, then abort.
 8472        let item2 = cx.new(|cx| TestItem::new(cx).with_dirty(true));
 8473        let item3 = cx.new(|cx| {
 8474            TestItem::new(cx)
 8475                .with_dirty(true)
 8476                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8477        });
 8478        workspace.update_in(cx, |w, window, cx| {
 8479            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8480            w.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8481        });
 8482        let task = workspace.update_in(cx, |w, window, cx| {
 8483            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8484        });
 8485        cx.executor().run_until_parked();
 8486        cx.simulate_prompt_answer("Cancel"); // cancel save all
 8487        cx.executor().run_until_parked();
 8488        assert!(!cx.has_pending_prompt());
 8489        assert!(!task.await.unwrap());
 8490    }
 8491
 8492    #[gpui::test]
 8493    async fn test_close_window_with_serializable_items(cx: &mut TestAppContext) {
 8494        init_test(cx);
 8495
 8496        // Register TestItem as a serializable item
 8497        cx.update(|cx| {
 8498            register_serializable_item::<TestItem>(cx);
 8499        });
 8500
 8501        let fs = FakeFs::new(cx.executor());
 8502        fs.insert_tree("/root", json!({ "one": "" })).await;
 8503
 8504        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8505        let (workspace, cx) =
 8506            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8507
 8508        // When there are dirty untitled items, but they can serialize, then there is no prompt.
 8509        let item1 = cx.new(|cx| {
 8510            TestItem::new(cx)
 8511                .with_dirty(true)
 8512                .with_serialize(|| Some(Task::ready(Ok(()))))
 8513        });
 8514        let item2 = cx.new(|cx| {
 8515            TestItem::new(cx)
 8516                .with_dirty(true)
 8517                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8518                .with_serialize(|| Some(Task::ready(Ok(()))))
 8519        });
 8520        workspace.update_in(cx, |w, window, cx| {
 8521            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8522            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8523        });
 8524        let task = workspace.update_in(cx, |w, window, cx| {
 8525            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8526        });
 8527        assert!(task.await.unwrap());
 8528    }
 8529
 8530    #[gpui::test]
 8531    async fn test_close_pane_items(cx: &mut TestAppContext) {
 8532        init_test(cx);
 8533
 8534        let fs = FakeFs::new(cx.executor());
 8535
 8536        let project = Project::test(fs, None, cx).await;
 8537        let (workspace, cx) =
 8538            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8539
 8540        let item1 = cx.new(|cx| {
 8541            TestItem::new(cx)
 8542                .with_dirty(true)
 8543                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 8544        });
 8545        let item2 = cx.new(|cx| {
 8546            TestItem::new(cx)
 8547                .with_dirty(true)
 8548                .with_conflict(true)
 8549                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 8550        });
 8551        let item3 = cx.new(|cx| {
 8552            TestItem::new(cx)
 8553                .with_dirty(true)
 8554                .with_conflict(true)
 8555                .with_project_items(&[dirty_project_item(3, "3.txt", cx)])
 8556        });
 8557        let item4 = cx.new(|cx| {
 8558            TestItem::new(cx).with_dirty(true).with_project_items(&[{
 8559                let project_item = TestProjectItem::new_untitled(cx);
 8560                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8561                project_item
 8562            }])
 8563        });
 8564        let pane = workspace.update_in(cx, |workspace, window, cx| {
 8565            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8566            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8567            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8568            workspace.add_item_to_active_pane(Box::new(item4.clone()), None, true, window, cx);
 8569            workspace.active_pane().clone()
 8570        });
 8571
 8572        let close_items = pane.update_in(cx, |pane, window, cx| {
 8573            pane.activate_item(1, true, true, window, cx);
 8574            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8575            let item1_id = item1.item_id();
 8576            let item3_id = item3.item_id();
 8577            let item4_id = item4.item_id();
 8578            pane.close_items(window, cx, SaveIntent::Close, move |id| {
 8579                [item1_id, item3_id, item4_id].contains(&id)
 8580            })
 8581        });
 8582        cx.executor().run_until_parked();
 8583
 8584        assert!(cx.has_pending_prompt());
 8585        cx.simulate_prompt_answer("Save all");
 8586
 8587        cx.executor().run_until_parked();
 8588
 8589        // Item 1 is saved. There's a prompt to save item 3.
 8590        pane.update(cx, |pane, cx| {
 8591            assert_eq!(item1.read(cx).save_count, 1);
 8592            assert_eq!(item1.read(cx).save_as_count, 0);
 8593            assert_eq!(item1.read(cx).reload_count, 0);
 8594            assert_eq!(pane.items_len(), 3);
 8595            assert_eq!(pane.active_item().unwrap().item_id(), item3.item_id());
 8596        });
 8597        assert!(cx.has_pending_prompt());
 8598
 8599        // Cancel saving item 3.
 8600        cx.simulate_prompt_answer("Discard");
 8601        cx.executor().run_until_parked();
 8602
 8603        // Item 3 is reloaded. There's a prompt to save item 4.
 8604        pane.update(cx, |pane, cx| {
 8605            assert_eq!(item3.read(cx).save_count, 0);
 8606            assert_eq!(item3.read(cx).save_as_count, 0);
 8607            assert_eq!(item3.read(cx).reload_count, 1);
 8608            assert_eq!(pane.items_len(), 2);
 8609            assert_eq!(pane.active_item().unwrap().item_id(), item4.item_id());
 8610        });
 8611
 8612        // There's a prompt for a path for item 4.
 8613        cx.simulate_new_path_selection(|_| Some(Default::default()));
 8614        close_items.await.unwrap();
 8615
 8616        // The requested items are closed.
 8617        pane.update(cx, |pane, cx| {
 8618            assert_eq!(item4.read(cx).save_count, 0);
 8619            assert_eq!(item4.read(cx).save_as_count, 1);
 8620            assert_eq!(item4.read(cx).reload_count, 0);
 8621            assert_eq!(pane.items_len(), 1);
 8622            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8623        });
 8624    }
 8625
 8626    #[gpui::test]
 8627    async fn test_prompting_to_save_only_on_last_item_for_entry(cx: &mut TestAppContext) {
 8628        init_test(cx);
 8629
 8630        let fs = FakeFs::new(cx.executor());
 8631        let project = Project::test(fs, [], cx).await;
 8632        let (workspace, cx) =
 8633            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8634
 8635        // Create several workspace items with single project entries, and two
 8636        // workspace items with multiple project entries.
 8637        let single_entry_items = (0..=4)
 8638            .map(|project_entry_id| {
 8639                cx.new(|cx| {
 8640                    TestItem::new(cx)
 8641                        .with_dirty(true)
 8642                        .with_project_items(&[dirty_project_item(
 8643                            project_entry_id,
 8644                            &format!("{project_entry_id}.txt"),
 8645                            cx,
 8646                        )])
 8647                })
 8648            })
 8649            .collect::<Vec<_>>();
 8650        let item_2_3 = cx.new(|cx| {
 8651            TestItem::new(cx)
 8652                .with_dirty(true)
 8653                .with_buffer_kind(ItemBufferKind::Multibuffer)
 8654                .with_project_items(&[
 8655                    single_entry_items[2].read(cx).project_items[0].clone(),
 8656                    single_entry_items[3].read(cx).project_items[0].clone(),
 8657                ])
 8658        });
 8659        let item_3_4 = cx.new(|cx| {
 8660            TestItem::new(cx)
 8661                .with_dirty(true)
 8662                .with_buffer_kind(ItemBufferKind::Multibuffer)
 8663                .with_project_items(&[
 8664                    single_entry_items[3].read(cx).project_items[0].clone(),
 8665                    single_entry_items[4].read(cx).project_items[0].clone(),
 8666                ])
 8667        });
 8668
 8669        // Create two panes that contain the following project entries:
 8670        //   left pane:
 8671        //     multi-entry items:   (2, 3)
 8672        //     single-entry items:  0, 2, 3, 4
 8673        //   right pane:
 8674        //     single-entry items:  4, 1
 8675        //     multi-entry items:   (3, 4)
 8676        let (left_pane, right_pane) = workspace.update_in(cx, |workspace, window, cx| {
 8677            let left_pane = workspace.active_pane().clone();
 8678            workspace.add_item_to_active_pane(Box::new(item_2_3.clone()), None, true, window, cx);
 8679            workspace.add_item_to_active_pane(
 8680                single_entry_items[0].boxed_clone(),
 8681                None,
 8682                true,
 8683                window,
 8684                cx,
 8685            );
 8686            workspace.add_item_to_active_pane(
 8687                single_entry_items[2].boxed_clone(),
 8688                None,
 8689                true,
 8690                window,
 8691                cx,
 8692            );
 8693            workspace.add_item_to_active_pane(
 8694                single_entry_items[3].boxed_clone(),
 8695                None,
 8696                true,
 8697                window,
 8698                cx,
 8699            );
 8700            workspace.add_item_to_active_pane(
 8701                single_entry_items[4].boxed_clone(),
 8702                None,
 8703                true,
 8704                window,
 8705                cx,
 8706            );
 8707
 8708            let right_pane =
 8709                workspace.split_and_clone(left_pane.clone(), SplitDirection::Right, window, cx);
 8710
 8711            let boxed_clone = single_entry_items[1].boxed_clone();
 8712            let right_pane = window.spawn(cx, async move |cx| {
 8713                right_pane.await.inspect(|right_pane| {
 8714                    right_pane
 8715                        .update_in(cx, |pane, window, cx| {
 8716                            pane.add_item(boxed_clone, true, true, None, window, cx);
 8717                            pane.add_item(Box::new(item_3_4.clone()), true, true, None, window, cx);
 8718                        })
 8719                        .unwrap();
 8720                })
 8721            });
 8722
 8723            (left_pane, right_pane)
 8724        });
 8725        let right_pane = right_pane.await.unwrap();
 8726        cx.focus(&right_pane);
 8727
 8728        let mut close = right_pane.update_in(cx, |pane, window, cx| {
 8729            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8730                .unwrap()
 8731        });
 8732        cx.executor().run_until_parked();
 8733
 8734        let msg = cx.pending_prompt().unwrap().0;
 8735        assert!(msg.contains("1.txt"));
 8736        assert!(!msg.contains("2.txt"));
 8737        assert!(!msg.contains("3.txt"));
 8738        assert!(!msg.contains("4.txt"));
 8739
 8740        cx.simulate_prompt_answer("Cancel");
 8741        close.await;
 8742
 8743        left_pane
 8744            .update_in(cx, |left_pane, window, cx| {
 8745                left_pane.close_item_by_id(
 8746                    single_entry_items[3].entity_id(),
 8747                    SaveIntent::Skip,
 8748                    window,
 8749                    cx,
 8750                )
 8751            })
 8752            .await
 8753            .unwrap();
 8754
 8755        close = right_pane.update_in(cx, |pane, window, cx| {
 8756            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8757                .unwrap()
 8758        });
 8759        cx.executor().run_until_parked();
 8760
 8761        let details = cx.pending_prompt().unwrap().1;
 8762        assert!(details.contains("1.txt"));
 8763        assert!(!details.contains("2.txt"));
 8764        assert!(details.contains("3.txt"));
 8765        // ideally this assertion could be made, but today we can only
 8766        // save whole items not project items, so the orphaned item 3 causes
 8767        // 4 to be saved too.
 8768        // assert!(!details.contains("4.txt"));
 8769
 8770        cx.simulate_prompt_answer("Save all");
 8771
 8772        cx.executor().run_until_parked();
 8773        close.await;
 8774        right_pane.read_with(cx, |pane, _| {
 8775            assert_eq!(pane.items_len(), 0);
 8776        });
 8777    }
 8778
 8779    #[gpui::test]
 8780    async fn test_autosave(cx: &mut gpui::TestAppContext) {
 8781        init_test(cx);
 8782
 8783        let fs = FakeFs::new(cx.executor());
 8784        let project = Project::test(fs, [], cx).await;
 8785        let (workspace, cx) =
 8786            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8787        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8788
 8789        let item = cx.new(|cx| {
 8790            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8791        });
 8792        let item_id = item.entity_id();
 8793        workspace.update_in(cx, |workspace, window, cx| {
 8794            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8795        });
 8796
 8797        // Autosave on window change.
 8798        item.update(cx, |item, cx| {
 8799            SettingsStore::update_global(cx, |settings, cx| {
 8800                settings.update_user_settings(cx, |settings| {
 8801                    settings.workspace.autosave = Some(AutosaveSetting::OnWindowChange);
 8802                })
 8803            });
 8804            item.is_dirty = true;
 8805        });
 8806
 8807        // Deactivating the window saves the file.
 8808        cx.deactivate_window();
 8809        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8810
 8811        // Re-activating the window doesn't save the file.
 8812        cx.update(|window, _| window.activate_window());
 8813        cx.executor().run_until_parked();
 8814        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8815
 8816        // Autosave on focus change.
 8817        item.update_in(cx, |item, window, cx| {
 8818            cx.focus_self(window);
 8819            SettingsStore::update_global(cx, |settings, cx| {
 8820                settings.update_user_settings(cx, |settings| {
 8821                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
 8822                })
 8823            });
 8824            item.is_dirty = true;
 8825        });
 8826        // Blurring the item saves the file.
 8827        item.update_in(cx, |_, window, _| window.blur());
 8828        cx.executor().run_until_parked();
 8829        item.read_with(cx, |item, _| assert_eq!(item.save_count, 2));
 8830
 8831        // Deactivating the window still saves the file.
 8832        item.update_in(cx, |item, window, cx| {
 8833            cx.focus_self(window);
 8834            item.is_dirty = true;
 8835        });
 8836        cx.deactivate_window();
 8837        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
 8838
 8839        // Autosave after delay.
 8840        item.update(cx, |item, cx| {
 8841            SettingsStore::update_global(cx, |settings, cx| {
 8842                settings.update_user_settings(cx, |settings| {
 8843                    settings.workspace.autosave = Some(AutosaveSetting::AfterDelay {
 8844                        milliseconds: 500.into(),
 8845                    });
 8846                })
 8847            });
 8848            item.is_dirty = true;
 8849            cx.emit(ItemEvent::Edit);
 8850        });
 8851
 8852        // Delay hasn't fully expired, so the file is still dirty and unsaved.
 8853        cx.executor().advance_clock(Duration::from_millis(250));
 8854        item.read_with(cx, |item, _| assert_eq!(item.save_count, 3));
 8855
 8856        // After delay expires, the file is saved.
 8857        cx.executor().advance_clock(Duration::from_millis(250));
 8858        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
 8859
 8860        // Autosave after delay, should save earlier than delay if tab is closed
 8861        item.update(cx, |item, cx| {
 8862            item.is_dirty = true;
 8863            cx.emit(ItemEvent::Edit);
 8864        });
 8865        cx.executor().advance_clock(Duration::from_millis(250));
 8866        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
 8867
 8868        // // Ensure auto save with delay saves the item on close, even if the timer hasn't yet run out.
 8869        pane.update_in(cx, |pane, window, cx| {
 8870            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8871        })
 8872        .await
 8873        .unwrap();
 8874        assert!(!cx.has_pending_prompt());
 8875        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8876
 8877        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
 8878        workspace.update_in(cx, |workspace, window, cx| {
 8879            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8880        });
 8881        item.update_in(cx, |item, _window, cx| {
 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        cx.run_until_parked();
 8888        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8889
 8890        // Autosave on focus change, ensuring closing the tab counts as such.
 8891        item.update(cx, |item, cx| {
 8892            SettingsStore::update_global(cx, |settings, cx| {
 8893                settings.update_user_settings(cx, |settings| {
 8894                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
 8895                })
 8896            });
 8897            item.is_dirty = true;
 8898            for project_item in &mut item.project_items {
 8899                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8900            }
 8901        });
 8902
 8903        pane.update_in(cx, |pane, window, cx| {
 8904            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8905        })
 8906        .await
 8907        .unwrap();
 8908        assert!(!cx.has_pending_prompt());
 8909        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
 8910
 8911        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
 8912        workspace.update_in(cx, |workspace, window, cx| {
 8913            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8914        });
 8915        item.update_in(cx, |item, window, cx| {
 8916            item.project_items[0].update(cx, |item, _| {
 8917                item.entry_id = None;
 8918            });
 8919            item.is_dirty = true;
 8920            window.blur();
 8921        });
 8922        cx.run_until_parked();
 8923        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
 8924
 8925        // Ensure autosave is prevented for deleted files also when closing the buffer.
 8926        let _close_items = pane.update_in(cx, |pane, window, cx| {
 8927            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8928        });
 8929        cx.run_until_parked();
 8930        assert!(cx.has_pending_prompt());
 8931        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
 8932    }
 8933
 8934    #[gpui::test]
 8935    async fn test_pane_navigation(cx: &mut gpui::TestAppContext) {
 8936        init_test(cx);
 8937
 8938        let fs = FakeFs::new(cx.executor());
 8939
 8940        let project = Project::test(fs, [], cx).await;
 8941        let (workspace, cx) =
 8942            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8943
 8944        let item = cx.new(|cx| {
 8945            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8946        });
 8947        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8948        let toolbar = pane.read_with(cx, |pane, _| pane.toolbar().clone());
 8949        let toolbar_notify_count = Rc::new(RefCell::new(0));
 8950
 8951        workspace.update_in(cx, |workspace, window, cx| {
 8952            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8953            let toolbar_notification_count = toolbar_notify_count.clone();
 8954            cx.observe_in(&toolbar, window, move |_, _, _, _| {
 8955                *toolbar_notification_count.borrow_mut() += 1
 8956            })
 8957            .detach();
 8958        });
 8959
 8960        pane.read_with(cx, |pane, _| {
 8961            assert!(!pane.can_navigate_backward());
 8962            assert!(!pane.can_navigate_forward());
 8963        });
 8964
 8965        item.update_in(cx, |item, _, cx| {
 8966            item.set_state("one".to_string(), cx);
 8967        });
 8968
 8969        // Toolbar must be notified to re-render the navigation buttons
 8970        assert_eq!(*toolbar_notify_count.borrow(), 1);
 8971
 8972        pane.read_with(cx, |pane, _| {
 8973            assert!(pane.can_navigate_backward());
 8974            assert!(!pane.can_navigate_forward());
 8975        });
 8976
 8977        workspace
 8978            .update_in(cx, |workspace, window, cx| {
 8979                workspace.go_back(pane.downgrade(), window, cx)
 8980            })
 8981            .await
 8982            .unwrap();
 8983
 8984        assert_eq!(*toolbar_notify_count.borrow(), 2);
 8985        pane.read_with(cx, |pane, _| {
 8986            assert!(!pane.can_navigate_backward());
 8987            assert!(pane.can_navigate_forward());
 8988        });
 8989    }
 8990
 8991    #[gpui::test]
 8992    async fn test_toggle_docks_and_panels(cx: &mut gpui::TestAppContext) {
 8993        init_test(cx);
 8994        let fs = FakeFs::new(cx.executor());
 8995
 8996        let project = Project::test(fs, [], cx).await;
 8997        let (workspace, cx) =
 8998            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8999
 9000        let panel = workspace.update_in(cx, |workspace, window, cx| {
 9001            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 9002            workspace.add_panel(panel.clone(), window, cx);
 9003
 9004            workspace
 9005                .right_dock()
 9006                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
 9007
 9008            panel
 9009        });
 9010
 9011        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9012        pane.update_in(cx, |pane, window, cx| {
 9013            let item = cx.new(TestItem::new);
 9014            pane.add_item(Box::new(item), true, true, None, window, cx);
 9015        });
 9016
 9017        // Transfer focus from center to panel
 9018        workspace.update_in(cx, |workspace, window, cx| {
 9019            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 9020        });
 9021
 9022        workspace.update_in(cx, |workspace, window, cx| {
 9023            assert!(workspace.right_dock().read(cx).is_open());
 9024            assert!(!panel.is_zoomed(window, cx));
 9025            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9026        });
 9027
 9028        // Transfer focus from panel to center
 9029        workspace.update_in(cx, |workspace, window, cx| {
 9030            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 9031        });
 9032
 9033        workspace.update_in(cx, |workspace, window, cx| {
 9034            assert!(workspace.right_dock().read(cx).is_open());
 9035            assert!(!panel.is_zoomed(window, cx));
 9036            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9037        });
 9038
 9039        // Close the dock
 9040        workspace.update_in(cx, |workspace, window, cx| {
 9041            workspace.toggle_dock(DockPosition::Right, window, cx);
 9042        });
 9043
 9044        workspace.update_in(cx, |workspace, window, cx| {
 9045            assert!(!workspace.right_dock().read(cx).is_open());
 9046            assert!(!panel.is_zoomed(window, cx));
 9047            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9048        });
 9049
 9050        // Open the dock
 9051        workspace.update_in(cx, |workspace, window, cx| {
 9052            workspace.toggle_dock(DockPosition::Right, window, cx);
 9053        });
 9054
 9055        workspace.update_in(cx, |workspace, window, cx| {
 9056            assert!(workspace.right_dock().read(cx).is_open());
 9057            assert!(!panel.is_zoomed(window, cx));
 9058            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9059        });
 9060
 9061        // Focus and zoom panel
 9062        panel.update_in(cx, |panel, window, cx| {
 9063            cx.focus_self(window);
 9064            panel.set_zoomed(true, window, cx)
 9065        });
 9066
 9067        workspace.update_in(cx, |workspace, window, cx| {
 9068            assert!(workspace.right_dock().read(cx).is_open());
 9069            assert!(panel.is_zoomed(window, cx));
 9070            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9071        });
 9072
 9073        // Transfer focus to the center closes the dock
 9074        workspace.update_in(cx, |workspace, window, cx| {
 9075            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 9076        });
 9077
 9078        workspace.update_in(cx, |workspace, window, cx| {
 9079            assert!(!workspace.right_dock().read(cx).is_open());
 9080            assert!(panel.is_zoomed(window, cx));
 9081            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9082        });
 9083
 9084        // Transferring focus back to the panel keeps it zoomed
 9085        workspace.update_in(cx, |workspace, window, cx| {
 9086            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 9087        });
 9088
 9089        workspace.update_in(cx, |workspace, window, cx| {
 9090            assert!(workspace.right_dock().read(cx).is_open());
 9091            assert!(panel.is_zoomed(window, cx));
 9092            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9093        });
 9094
 9095        // Close the dock while it is zoomed
 9096        workspace.update_in(cx, |workspace, window, cx| {
 9097            workspace.toggle_dock(DockPosition::Right, window, cx)
 9098        });
 9099
 9100        workspace.update_in(cx, |workspace, window, cx| {
 9101            assert!(!workspace.right_dock().read(cx).is_open());
 9102            assert!(panel.is_zoomed(window, cx));
 9103            assert!(workspace.zoomed.is_none());
 9104            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9105        });
 9106
 9107        // Opening the dock, when it's zoomed, retains focus
 9108        workspace.update_in(cx, |workspace, window, cx| {
 9109            workspace.toggle_dock(DockPosition::Right, window, cx)
 9110        });
 9111
 9112        workspace.update_in(cx, |workspace, window, cx| {
 9113            assert!(workspace.right_dock().read(cx).is_open());
 9114            assert!(panel.is_zoomed(window, cx));
 9115            assert!(workspace.zoomed.is_some());
 9116            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9117        });
 9118
 9119        // Unzoom and close the panel, zoom the active pane.
 9120        panel.update_in(cx, |panel, window, cx| panel.set_zoomed(false, window, cx));
 9121        workspace.update_in(cx, |workspace, window, cx| {
 9122            workspace.toggle_dock(DockPosition::Right, window, cx)
 9123        });
 9124        pane.update_in(cx, |pane, window, cx| {
 9125            pane.toggle_zoom(&Default::default(), window, cx)
 9126        });
 9127
 9128        // Opening a dock unzooms the pane.
 9129        workspace.update_in(cx, |workspace, window, cx| {
 9130            workspace.toggle_dock(DockPosition::Right, window, cx)
 9131        });
 9132        workspace.update_in(cx, |workspace, window, cx| {
 9133            let pane = pane.read(cx);
 9134            assert!(!pane.is_zoomed());
 9135            assert!(!pane.focus_handle(cx).is_focused(window));
 9136            assert!(workspace.right_dock().read(cx).is_open());
 9137            assert!(workspace.zoomed.is_none());
 9138        });
 9139    }
 9140
 9141    #[gpui::test]
 9142    async fn test_join_pane_into_next(cx: &mut gpui::TestAppContext) {
 9143        init_test(cx);
 9144
 9145        let fs = FakeFs::new(cx.executor());
 9146
 9147        let project = Project::test(fs, None, cx).await;
 9148        let (workspace, cx) =
 9149            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9150
 9151        // Let's arrange the panes like this:
 9152        //
 9153        // +-----------------------+
 9154        // |         top           |
 9155        // +------+--------+-------+
 9156        // | left | center | right |
 9157        // +------+--------+-------+
 9158        // |        bottom         |
 9159        // +-----------------------+
 9160
 9161        let top_item = cx.new(|cx| {
 9162            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "top.txt", cx)])
 9163        });
 9164        let bottom_item = cx.new(|cx| {
 9165            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "bottom.txt", cx)])
 9166        });
 9167        let left_item = cx.new(|cx| {
 9168            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "left.txt", cx)])
 9169        });
 9170        let right_item = cx.new(|cx| {
 9171            TestItem::new(cx).with_project_items(&[TestProjectItem::new(4, "right.txt", cx)])
 9172        });
 9173        let center_item = cx.new(|cx| {
 9174            TestItem::new(cx).with_project_items(&[TestProjectItem::new(5, "center.txt", cx)])
 9175        });
 9176
 9177        let top_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9178            let top_pane_id = workspace.active_pane().entity_id();
 9179            workspace.add_item_to_active_pane(Box::new(top_item.clone()), None, false, window, cx);
 9180            workspace.split_pane(
 9181                workspace.active_pane().clone(),
 9182                SplitDirection::Down,
 9183                window,
 9184                cx,
 9185            );
 9186            top_pane_id
 9187        });
 9188        let bottom_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9189            let bottom_pane_id = workspace.active_pane().entity_id();
 9190            workspace.add_item_to_active_pane(
 9191                Box::new(bottom_item.clone()),
 9192                None,
 9193                false,
 9194                window,
 9195                cx,
 9196            );
 9197            workspace.split_pane(
 9198                workspace.active_pane().clone(),
 9199                SplitDirection::Up,
 9200                window,
 9201                cx,
 9202            );
 9203            bottom_pane_id
 9204        });
 9205        let left_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9206            let left_pane_id = workspace.active_pane().entity_id();
 9207            workspace.add_item_to_active_pane(Box::new(left_item.clone()), None, false, window, cx);
 9208            workspace.split_pane(
 9209                workspace.active_pane().clone(),
 9210                SplitDirection::Right,
 9211                window,
 9212                cx,
 9213            );
 9214            left_pane_id
 9215        });
 9216        let right_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9217            let right_pane_id = workspace.active_pane().entity_id();
 9218            workspace.add_item_to_active_pane(
 9219                Box::new(right_item.clone()),
 9220                None,
 9221                false,
 9222                window,
 9223                cx,
 9224            );
 9225            workspace.split_pane(
 9226                workspace.active_pane().clone(),
 9227                SplitDirection::Left,
 9228                window,
 9229                cx,
 9230            );
 9231            right_pane_id
 9232        });
 9233        let center_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9234            let center_pane_id = workspace.active_pane().entity_id();
 9235            workspace.add_item_to_active_pane(
 9236                Box::new(center_item.clone()),
 9237                None,
 9238                false,
 9239                window,
 9240                cx,
 9241            );
 9242            center_pane_id
 9243        });
 9244        cx.executor().run_until_parked();
 9245
 9246        workspace.update_in(cx, |workspace, window, cx| {
 9247            assert_eq!(center_pane_id, workspace.active_pane().entity_id());
 9248
 9249            // Join into next from center pane into right
 9250            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9251        });
 9252
 9253        workspace.update_in(cx, |workspace, window, cx| {
 9254            let active_pane = workspace.active_pane();
 9255            assert_eq!(right_pane_id, active_pane.entity_id());
 9256            assert_eq!(2, active_pane.read(cx).items_len());
 9257            let item_ids_in_pane =
 9258                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9259            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9260            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9261
 9262            // Join into next from right pane into bottom
 9263            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9264        });
 9265
 9266        workspace.update_in(cx, |workspace, window, cx| {
 9267            let active_pane = workspace.active_pane();
 9268            assert_eq!(bottom_pane_id, active_pane.entity_id());
 9269            assert_eq!(3, active_pane.read(cx).items_len());
 9270            let item_ids_in_pane =
 9271                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9272            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9273            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9274            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9275
 9276            // Join into next from bottom pane into left
 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!(left_pane_id, active_pane.entity_id());
 9283            assert_eq!(4, 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
 9291            // Join into next from left pane into top
 9292            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9293        });
 9294
 9295        workspace.update_in(cx, |workspace, window, cx| {
 9296            let active_pane = workspace.active_pane();
 9297            assert_eq!(top_pane_id, active_pane.entity_id());
 9298            assert_eq!(5, active_pane.read(cx).items_len());
 9299            let item_ids_in_pane =
 9300                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9301            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9302            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9303            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9304            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9305            assert!(item_ids_in_pane.contains(&top_item.item_id()));
 9306
 9307            // Single pane left: no-op
 9308            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx)
 9309        });
 9310
 9311        workspace.update(cx, |workspace, _cx| {
 9312            let active_pane = workspace.active_pane();
 9313            assert_eq!(top_pane_id, active_pane.entity_id());
 9314        });
 9315    }
 9316
 9317    fn add_an_item_to_active_pane(
 9318        cx: &mut VisualTestContext,
 9319        workspace: &Entity<Workspace>,
 9320        item_id: u64,
 9321    ) -> Entity<TestItem> {
 9322        let item = cx.new(|cx| {
 9323            TestItem::new(cx).with_project_items(&[TestProjectItem::new(
 9324                item_id,
 9325                "item{item_id}.txt",
 9326                cx,
 9327            )])
 9328        });
 9329        workspace.update_in(cx, |workspace, window, cx| {
 9330            workspace.add_item_to_active_pane(Box::new(item.clone()), None, false, window, cx);
 9331        });
 9332        item
 9333    }
 9334
 9335    fn split_pane(cx: &mut VisualTestContext, workspace: &Entity<Workspace>) -> Entity<Pane> {
 9336        workspace.update_in(cx, |workspace, window, cx| {
 9337            workspace.split_pane(
 9338                workspace.active_pane().clone(),
 9339                SplitDirection::Right,
 9340                window,
 9341                cx,
 9342            )
 9343        })
 9344    }
 9345
 9346    #[gpui::test]
 9347    async fn test_join_all_panes(cx: &mut gpui::TestAppContext) {
 9348        init_test(cx);
 9349        let fs = FakeFs::new(cx.executor());
 9350        let project = Project::test(fs, None, cx).await;
 9351        let (workspace, cx) =
 9352            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9353
 9354        add_an_item_to_active_pane(cx, &workspace, 1);
 9355        split_pane(cx, &workspace);
 9356        add_an_item_to_active_pane(cx, &workspace, 2);
 9357        split_pane(cx, &workspace); // empty pane
 9358        split_pane(cx, &workspace);
 9359        let last_item = add_an_item_to_active_pane(cx, &workspace, 3);
 9360
 9361        cx.executor().run_until_parked();
 9362
 9363        workspace.update(cx, |workspace, cx| {
 9364            let num_panes = workspace.panes().len();
 9365            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9366            let active_item = workspace
 9367                .active_pane()
 9368                .read(cx)
 9369                .active_item()
 9370                .expect("item is in focus");
 9371
 9372            assert_eq!(num_panes, 4);
 9373            assert_eq!(num_items_in_current_pane, 1);
 9374            assert_eq!(active_item.item_id(), last_item.item_id());
 9375        });
 9376
 9377        workspace.update_in(cx, |workspace, window, cx| {
 9378            workspace.join_all_panes(window, cx);
 9379        });
 9380
 9381        workspace.update(cx, |workspace, cx| {
 9382            let num_panes = workspace.panes().len();
 9383            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9384            let active_item = workspace
 9385                .active_pane()
 9386                .read(cx)
 9387                .active_item()
 9388                .expect("item is in focus");
 9389
 9390            assert_eq!(num_panes, 1);
 9391            assert_eq!(num_items_in_current_pane, 3);
 9392            assert_eq!(active_item.item_id(), last_item.item_id());
 9393        });
 9394    }
 9395    struct TestModal(FocusHandle);
 9396
 9397    impl TestModal {
 9398        fn new(_: &mut Window, cx: &mut Context<Self>) -> Self {
 9399            Self(cx.focus_handle())
 9400        }
 9401    }
 9402
 9403    impl EventEmitter<DismissEvent> for TestModal {}
 9404
 9405    impl Focusable for TestModal {
 9406        fn focus_handle(&self, _cx: &App) -> FocusHandle {
 9407            self.0.clone()
 9408        }
 9409    }
 9410
 9411    impl ModalView for TestModal {}
 9412
 9413    impl Render for TestModal {
 9414        fn render(
 9415            &mut self,
 9416            _window: &mut Window,
 9417            _cx: &mut Context<TestModal>,
 9418        ) -> impl IntoElement {
 9419            div().track_focus(&self.0)
 9420        }
 9421    }
 9422
 9423    #[gpui::test]
 9424    async fn test_panels(cx: &mut gpui::TestAppContext) {
 9425        init_test(cx);
 9426        let fs = FakeFs::new(cx.executor());
 9427
 9428        let project = Project::test(fs, [], cx).await;
 9429        let (workspace, cx) =
 9430            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9431
 9432        let (panel_1, panel_2) = workspace.update_in(cx, |workspace, window, cx| {
 9433            let panel_1 = cx.new(|cx| TestPanel::new(DockPosition::Left, cx));
 9434            workspace.add_panel(panel_1.clone(), window, cx);
 9435            workspace.toggle_dock(DockPosition::Left, window, cx);
 9436            let panel_2 = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 9437            workspace.add_panel(panel_2.clone(), window, cx);
 9438            workspace.toggle_dock(DockPosition::Right, window, cx);
 9439
 9440            let left_dock = workspace.left_dock();
 9441            assert_eq!(
 9442                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9443                panel_1.panel_id()
 9444            );
 9445            assert_eq!(
 9446                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9447                panel_1.size(window, cx)
 9448            );
 9449
 9450            left_dock.update(cx, |left_dock, cx| {
 9451                left_dock.resize_active_panel(Some(px(1337.)), window, cx)
 9452            });
 9453            assert_eq!(
 9454                workspace
 9455                    .right_dock()
 9456                    .read(cx)
 9457                    .visible_panel()
 9458                    .unwrap()
 9459                    .panel_id(),
 9460                panel_2.panel_id(),
 9461            );
 9462
 9463            (panel_1, panel_2)
 9464        });
 9465
 9466        // Move panel_1 to the right
 9467        panel_1.update_in(cx, |panel_1, window, cx| {
 9468            panel_1.set_position(DockPosition::Right, window, cx)
 9469        });
 9470
 9471        workspace.update_in(cx, |workspace, window, cx| {
 9472            // Since panel_1 was visible on the left, it should now be visible now that it's been moved to the right.
 9473            // Since it was the only panel on the left, the left dock should now be closed.
 9474            assert!(!workspace.left_dock().read(cx).is_open());
 9475            assert!(workspace.left_dock().read(cx).visible_panel().is_none());
 9476            let right_dock = workspace.right_dock();
 9477            assert_eq!(
 9478                right_dock.read(cx).visible_panel().unwrap().panel_id(),
 9479                panel_1.panel_id()
 9480            );
 9481            assert_eq!(
 9482                right_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9483                px(1337.)
 9484            );
 9485
 9486            // Now we move panel_2 to the left
 9487            panel_2.set_position(DockPosition::Left, window, cx);
 9488        });
 9489
 9490        workspace.update(cx, |workspace, cx| {
 9491            // Since panel_2 was not visible on the right, we don't open the left dock.
 9492            assert!(!workspace.left_dock().read(cx).is_open());
 9493            // And the right dock is unaffected in its displaying of panel_1
 9494            assert!(workspace.right_dock().read(cx).is_open());
 9495            assert_eq!(
 9496                workspace
 9497                    .right_dock()
 9498                    .read(cx)
 9499                    .visible_panel()
 9500                    .unwrap()
 9501                    .panel_id(),
 9502                panel_1.panel_id(),
 9503            );
 9504        });
 9505
 9506        // Move panel_1 back to the left
 9507        panel_1.update_in(cx, |panel_1, window, cx| {
 9508            panel_1.set_position(DockPosition::Left, window, cx)
 9509        });
 9510
 9511        workspace.update_in(cx, |workspace, window, cx| {
 9512            // Since panel_1 was visible on the right, we open the left dock and make panel_1 active.
 9513            let left_dock = workspace.left_dock();
 9514            assert!(left_dock.read(cx).is_open());
 9515            assert_eq!(
 9516                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9517                panel_1.panel_id()
 9518            );
 9519            assert_eq!(
 9520                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9521                px(1337.)
 9522            );
 9523            // And the right dock should be closed as it no longer has any panels.
 9524            assert!(!workspace.right_dock().read(cx).is_open());
 9525
 9526            // Now we move panel_1 to the bottom
 9527            panel_1.set_position(DockPosition::Bottom, window, cx);
 9528        });
 9529
 9530        workspace.update_in(cx, |workspace, window, cx| {
 9531            // Since panel_1 was visible on the left, we close the left dock.
 9532            assert!(!workspace.left_dock().read(cx).is_open());
 9533            // The bottom dock is sized based on the panel's default size,
 9534            // since the panel orientation changed from vertical to horizontal.
 9535            let bottom_dock = workspace.bottom_dock();
 9536            assert_eq!(
 9537                bottom_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9538                panel_1.size(window, cx),
 9539            );
 9540            // Close bottom dock and move panel_1 back to the left.
 9541            bottom_dock.update(cx, |bottom_dock, cx| {
 9542                bottom_dock.set_open(false, window, cx)
 9543            });
 9544            panel_1.set_position(DockPosition::Left, window, cx);
 9545        });
 9546
 9547        // Emit activated event on panel 1
 9548        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Activate));
 9549
 9550        // Now the left dock is open and panel_1 is active and focused.
 9551        workspace.update_in(cx, |workspace, window, cx| {
 9552            let left_dock = workspace.left_dock();
 9553            assert!(left_dock.read(cx).is_open());
 9554            assert_eq!(
 9555                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9556                panel_1.panel_id(),
 9557            );
 9558            assert!(panel_1.focus_handle(cx).is_focused(window));
 9559        });
 9560
 9561        // Emit closed event on panel 2, which is not active
 9562        panel_2.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9563
 9564        // Wo don't close the left dock, because panel_2 wasn't the active panel
 9565        workspace.update(cx, |workspace, cx| {
 9566            let left_dock = workspace.left_dock();
 9567            assert!(left_dock.read(cx).is_open());
 9568            assert_eq!(
 9569                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9570                panel_1.panel_id(),
 9571            );
 9572        });
 9573
 9574        // Emitting a ZoomIn event shows the panel as zoomed.
 9575        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomIn));
 9576        workspace.read_with(cx, |workspace, _| {
 9577            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9578            assert_eq!(workspace.zoomed_position, Some(DockPosition::Left));
 9579        });
 9580
 9581        // Move panel to another dock while it is zoomed
 9582        panel_1.update_in(cx, |panel, window, cx| {
 9583            panel.set_position(DockPosition::Right, window, cx)
 9584        });
 9585        workspace.read_with(cx, |workspace, _| {
 9586            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9587
 9588            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9589        });
 9590
 9591        // This is a helper for getting a:
 9592        // - valid focus on an element,
 9593        // - that isn't a part of the panes and panels system of the Workspace,
 9594        // - and doesn't trigger the 'on_focus_lost' API.
 9595        let focus_other_view = {
 9596            let workspace = workspace.clone();
 9597            move |cx: &mut VisualTestContext| {
 9598                workspace.update_in(cx, |workspace, window, cx| {
 9599                    if workspace.active_modal::<TestModal>(cx).is_some() {
 9600                        workspace.toggle_modal(window, cx, TestModal::new);
 9601                        workspace.toggle_modal(window, cx, TestModal::new);
 9602                    } else {
 9603                        workspace.toggle_modal(window, cx, TestModal::new);
 9604                    }
 9605                })
 9606            }
 9607        };
 9608
 9609        // If focus is transferred to another view that's not a panel or another pane, we still show
 9610        // the panel as zoomed.
 9611        focus_other_view(cx);
 9612        workspace.read_with(cx, |workspace, _| {
 9613            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9614            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9615        });
 9616
 9617        // If focus is transferred elsewhere in the workspace, the panel is no longer zoomed.
 9618        workspace.update_in(cx, |_workspace, window, cx| {
 9619            cx.focus_self(window);
 9620        });
 9621        workspace.read_with(cx, |workspace, _| {
 9622            assert_eq!(workspace.zoomed, None);
 9623            assert_eq!(workspace.zoomed_position, None);
 9624        });
 9625
 9626        // If focus is transferred again to another view that's not a panel or a pane, we won't
 9627        // show the panel as zoomed because it wasn't zoomed before.
 9628        focus_other_view(cx);
 9629        workspace.read_with(cx, |workspace, _| {
 9630            assert_eq!(workspace.zoomed, None);
 9631            assert_eq!(workspace.zoomed_position, None);
 9632        });
 9633
 9634        // When the panel is activated, it is zoomed again.
 9635        cx.dispatch_action(ToggleRightDock);
 9636        workspace.read_with(cx, |workspace, _| {
 9637            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9638            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9639        });
 9640
 9641        // Emitting a ZoomOut event unzooms the panel.
 9642        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomOut));
 9643        workspace.read_with(cx, |workspace, _| {
 9644            assert_eq!(workspace.zoomed, None);
 9645            assert_eq!(workspace.zoomed_position, None);
 9646        });
 9647
 9648        // Emit closed event on panel 1, which is active
 9649        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9650
 9651        // Now the left dock is closed, because panel_1 was the active panel
 9652        workspace.update(cx, |workspace, cx| {
 9653            let right_dock = workspace.right_dock();
 9654            assert!(!right_dock.read(cx).is_open());
 9655        });
 9656    }
 9657
 9658    #[gpui::test]
 9659    async fn test_no_save_prompt_when_multi_buffer_dirty_items_closed(cx: &mut TestAppContext) {
 9660        init_test(cx);
 9661
 9662        let fs = FakeFs::new(cx.background_executor.clone());
 9663        let project = Project::test(fs, [], cx).await;
 9664        let (workspace, cx) =
 9665            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9666        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9667
 9668        let dirty_regular_buffer = cx.new(|cx| {
 9669            TestItem::new(cx)
 9670                .with_dirty(true)
 9671                .with_label("1.txt")
 9672                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9673        });
 9674        let dirty_regular_buffer_2 = cx.new(|cx| {
 9675            TestItem::new(cx)
 9676                .with_dirty(true)
 9677                .with_label("2.txt")
 9678                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9679        });
 9680        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9681            TestItem::new(cx)
 9682                .with_dirty(true)
 9683                .with_buffer_kind(ItemBufferKind::Multibuffer)
 9684                .with_label("Fake Project Search")
 9685                .with_project_items(&[
 9686                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9687                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9688                ])
 9689        });
 9690        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9691        workspace.update_in(cx, |workspace, window, cx| {
 9692            workspace.add_item(
 9693                pane.clone(),
 9694                Box::new(dirty_regular_buffer.clone()),
 9695                None,
 9696                false,
 9697                false,
 9698                window,
 9699                cx,
 9700            );
 9701            workspace.add_item(
 9702                pane.clone(),
 9703                Box::new(dirty_regular_buffer_2.clone()),
 9704                None,
 9705                false,
 9706                false,
 9707                window,
 9708                cx,
 9709            );
 9710            workspace.add_item(
 9711                pane.clone(),
 9712                Box::new(dirty_multi_buffer_with_both.clone()),
 9713                None,
 9714                false,
 9715                false,
 9716                window,
 9717                cx,
 9718            );
 9719        });
 9720
 9721        pane.update_in(cx, |pane, window, cx| {
 9722            pane.activate_item(2, true, true, window, cx);
 9723            assert_eq!(
 9724                pane.active_item().unwrap().item_id(),
 9725                multi_buffer_with_both_files_id,
 9726                "Should select the multi buffer in the pane"
 9727            );
 9728        });
 9729        let close_all_but_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9730            pane.close_other_items(
 9731                &CloseOtherItems {
 9732                    save_intent: Some(SaveIntent::Save),
 9733                    close_pinned: true,
 9734                },
 9735                None,
 9736                window,
 9737                cx,
 9738            )
 9739        });
 9740        cx.background_executor.run_until_parked();
 9741        assert!(!cx.has_pending_prompt());
 9742        close_all_but_multi_buffer_task
 9743            .await
 9744            .expect("Closing all buffers but the multi buffer failed");
 9745        pane.update(cx, |pane, cx| {
 9746            assert_eq!(dirty_regular_buffer.read(cx).save_count, 1);
 9747            assert_eq!(dirty_multi_buffer_with_both.read(cx).save_count, 0);
 9748            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 1);
 9749            assert_eq!(pane.items_len(), 1);
 9750            assert_eq!(
 9751                pane.active_item().unwrap().item_id(),
 9752                multi_buffer_with_both_files_id,
 9753                "Should have only the multi buffer left in the pane"
 9754            );
 9755            assert!(
 9756                dirty_multi_buffer_with_both.read(cx).is_dirty,
 9757                "The multi buffer containing the unsaved buffer should still be dirty"
 9758            );
 9759        });
 9760
 9761        dirty_regular_buffer.update(cx, |buffer, cx| {
 9762            buffer.project_items[0].update(cx, |pi, _| pi.is_dirty = true)
 9763        });
 9764
 9765        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9766            pane.close_active_item(
 9767                &CloseActiveItem {
 9768                    save_intent: Some(SaveIntent::Close),
 9769                    close_pinned: false,
 9770                },
 9771                window,
 9772                cx,
 9773            )
 9774        });
 9775        cx.background_executor.run_until_parked();
 9776        assert!(
 9777            cx.has_pending_prompt(),
 9778            "Dirty multi buffer should prompt a save dialog"
 9779        );
 9780        cx.simulate_prompt_answer("Save");
 9781        cx.background_executor.run_until_parked();
 9782        close_multi_buffer_task
 9783            .await
 9784            .expect("Closing the multi buffer failed");
 9785        pane.update(cx, |pane, cx| {
 9786            assert_eq!(
 9787                dirty_multi_buffer_with_both.read(cx).save_count,
 9788                1,
 9789                "Multi buffer item should get be saved"
 9790            );
 9791            // Test impl does not save inner items, so we do not assert them
 9792            assert_eq!(
 9793                pane.items_len(),
 9794                0,
 9795                "No more items should be left in the pane"
 9796            );
 9797            assert!(pane.active_item().is_none());
 9798        });
 9799    }
 9800
 9801    #[gpui::test]
 9802    async fn test_save_prompt_when_dirty_multi_buffer_closed_with_some_of_its_dirty_items_not_present_in_the_pane(
 9803        cx: &mut TestAppContext,
 9804    ) {
 9805        init_test(cx);
 9806
 9807        let fs = FakeFs::new(cx.background_executor.clone());
 9808        let project = Project::test(fs, [], cx).await;
 9809        let (workspace, cx) =
 9810            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9811        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9812
 9813        let dirty_regular_buffer = cx.new(|cx| {
 9814            TestItem::new(cx)
 9815                .with_dirty(true)
 9816                .with_label("1.txt")
 9817                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9818        });
 9819        let dirty_regular_buffer_2 = cx.new(|cx| {
 9820            TestItem::new(cx)
 9821                .with_dirty(true)
 9822                .with_label("2.txt")
 9823                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9824        });
 9825        let clear_regular_buffer = cx.new(|cx| {
 9826            TestItem::new(cx)
 9827                .with_label("3.txt")
 9828                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
 9829        });
 9830
 9831        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9832            TestItem::new(cx)
 9833                .with_dirty(true)
 9834                .with_buffer_kind(ItemBufferKind::Multibuffer)
 9835                .with_label("Fake Project Search")
 9836                .with_project_items(&[
 9837                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9838                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9839                    clear_regular_buffer.read(cx).project_items[0].clone(),
 9840                ])
 9841        });
 9842        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9843        workspace.update_in(cx, |workspace, window, cx| {
 9844            workspace.add_item(
 9845                pane.clone(),
 9846                Box::new(dirty_regular_buffer.clone()),
 9847                None,
 9848                false,
 9849                false,
 9850                window,
 9851                cx,
 9852            );
 9853            workspace.add_item(
 9854                pane.clone(),
 9855                Box::new(dirty_multi_buffer_with_both.clone()),
 9856                None,
 9857                false,
 9858                false,
 9859                window,
 9860                cx,
 9861            );
 9862        });
 9863
 9864        pane.update_in(cx, |pane, window, cx| {
 9865            pane.activate_item(1, true, true, window, cx);
 9866            assert_eq!(
 9867                pane.active_item().unwrap().item_id(),
 9868                multi_buffer_with_both_files_id,
 9869                "Should select the multi buffer in the pane"
 9870            );
 9871        });
 9872        let _close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9873            pane.close_active_item(
 9874                &CloseActiveItem {
 9875                    save_intent: None,
 9876                    close_pinned: false,
 9877                },
 9878                window,
 9879                cx,
 9880            )
 9881        });
 9882        cx.background_executor.run_until_parked();
 9883        assert!(
 9884            cx.has_pending_prompt(),
 9885            "With one dirty item from the multi buffer not being in the pane, a save prompt should be shown"
 9886        );
 9887    }
 9888
 9889    /// Tests that when `close_on_file_delete` is enabled, files are automatically
 9890    /// closed when they are deleted from disk.
 9891    #[gpui::test]
 9892    async fn test_close_on_disk_deletion_enabled(cx: &mut TestAppContext) {
 9893        init_test(cx);
 9894
 9895        // Enable the close_on_disk_deletion setting
 9896        cx.update_global(|store: &mut SettingsStore, cx| {
 9897            store.update_user_settings(cx, |settings| {
 9898                settings.workspace.close_on_file_delete = Some(true);
 9899            });
 9900        });
 9901
 9902        let fs = FakeFs::new(cx.background_executor.clone());
 9903        let project = Project::test(fs, [], cx).await;
 9904        let (workspace, cx) =
 9905            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9906        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9907
 9908        // Create a test item that simulates a file
 9909        let item = cx.new(|cx| {
 9910            TestItem::new(cx)
 9911                .with_label("test.txt")
 9912                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9913        });
 9914
 9915        // Add item to workspace
 9916        workspace.update_in(cx, |workspace, window, cx| {
 9917            workspace.add_item(
 9918                pane.clone(),
 9919                Box::new(item.clone()),
 9920                None,
 9921                false,
 9922                false,
 9923                window,
 9924                cx,
 9925            );
 9926        });
 9927
 9928        // Verify the item is in the pane
 9929        pane.read_with(cx, |pane, _| {
 9930            assert_eq!(pane.items().count(), 1);
 9931        });
 9932
 9933        // Simulate file deletion by setting the item's deleted state
 9934        item.update(cx, |item, _| {
 9935            item.set_has_deleted_file(true);
 9936        });
 9937
 9938        // Emit UpdateTab event to trigger the close behavior
 9939        cx.run_until_parked();
 9940        item.update(cx, |_, cx| {
 9941            cx.emit(ItemEvent::UpdateTab);
 9942        });
 9943
 9944        // Allow the close operation to complete
 9945        cx.run_until_parked();
 9946
 9947        // Verify the item was automatically closed
 9948        pane.read_with(cx, |pane, _| {
 9949            assert_eq!(
 9950                pane.items().count(),
 9951                0,
 9952                "Item should be automatically closed when file is deleted"
 9953            );
 9954        });
 9955    }
 9956
 9957    /// Tests that when `close_on_file_delete` is disabled (default), files remain
 9958    /// open with a strikethrough when they are deleted from disk.
 9959    #[gpui::test]
 9960    async fn test_close_on_disk_deletion_disabled(cx: &mut TestAppContext) {
 9961        init_test(cx);
 9962
 9963        // Ensure close_on_disk_deletion is disabled (default)
 9964        cx.update_global(|store: &mut SettingsStore, cx| {
 9965            store.update_user_settings(cx, |settings| {
 9966                settings.workspace.close_on_file_delete = Some(false);
 9967            });
 9968        });
 9969
 9970        let fs = FakeFs::new(cx.background_executor.clone());
 9971        let project = Project::test(fs, [], cx).await;
 9972        let (workspace, cx) =
 9973            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9974        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9975
 9976        // Create a test item that simulates a file
 9977        let item = cx.new(|cx| {
 9978            TestItem::new(cx)
 9979                .with_label("test.txt")
 9980                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9981        });
 9982
 9983        // Add item to workspace
 9984        workspace.update_in(cx, |workspace, window, cx| {
 9985            workspace.add_item(
 9986                pane.clone(),
 9987                Box::new(item.clone()),
 9988                None,
 9989                false,
 9990                false,
 9991                window,
 9992                cx,
 9993            );
 9994        });
 9995
 9996        // Verify the item is in the pane
 9997        pane.read_with(cx, |pane, _| {
 9998            assert_eq!(pane.items().count(), 1);
 9999        });
10000
10001        // Simulate file deletion
10002        item.update(cx, |item, _| {
10003            item.set_has_deleted_file(true);
10004        });
10005
10006        // Emit UpdateTab event
10007        cx.run_until_parked();
10008        item.update(cx, |_, cx| {
10009            cx.emit(ItemEvent::UpdateTab);
10010        });
10011
10012        // Allow any potential close operation to complete
10013        cx.run_until_parked();
10014
10015        // Verify the item remains open (with strikethrough)
10016        pane.read_with(cx, |pane, _| {
10017            assert_eq!(
10018                pane.items().count(),
10019                1,
10020                "Item should remain open when close_on_disk_deletion is disabled"
10021            );
10022        });
10023
10024        // Verify the item shows as deleted
10025        item.read_with(cx, |item, _| {
10026            assert!(
10027                item.has_deleted_file,
10028                "Item should be marked as having deleted file"
10029            );
10030        });
10031    }
10032
10033    /// Tests that dirty files are not automatically closed when deleted from disk,
10034    /// even when `close_on_file_delete` is enabled. This ensures users don't lose
10035    /// unsaved changes without being prompted.
10036    #[gpui::test]
10037    async fn test_close_on_disk_deletion_with_dirty_file(cx: &mut TestAppContext) {
10038        init_test(cx);
10039
10040        // Enable the close_on_file_delete setting
10041        cx.update_global(|store: &mut SettingsStore, cx| {
10042            store.update_user_settings(cx, |settings| {
10043                settings.workspace.close_on_file_delete = Some(true);
10044            });
10045        });
10046
10047        let fs = FakeFs::new(cx.background_executor.clone());
10048        let project = Project::test(fs, [], cx).await;
10049        let (workspace, cx) =
10050            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10051        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10052
10053        // Create a dirty test item
10054        let item = cx.new(|cx| {
10055            TestItem::new(cx)
10056                .with_dirty(true)
10057                .with_label("test.txt")
10058                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
10059        });
10060
10061        // Add item to workspace
10062        workspace.update_in(cx, |workspace, window, cx| {
10063            workspace.add_item(
10064                pane.clone(),
10065                Box::new(item.clone()),
10066                None,
10067                false,
10068                false,
10069                window,
10070                cx,
10071            );
10072        });
10073
10074        // Simulate file deletion
10075        item.update(cx, |item, _| {
10076            item.set_has_deleted_file(true);
10077        });
10078
10079        // Emit UpdateTab event to trigger the close behavior
10080        cx.run_until_parked();
10081        item.update(cx, |_, cx| {
10082            cx.emit(ItemEvent::UpdateTab);
10083        });
10084
10085        // Allow any potential close operation to complete
10086        cx.run_until_parked();
10087
10088        // Verify the item remains open (dirty files are not auto-closed)
10089        pane.read_with(cx, |pane, _| {
10090            assert_eq!(
10091                pane.items().count(),
10092                1,
10093                "Dirty items should not be automatically closed even when file is deleted"
10094            );
10095        });
10096
10097        // Verify the item is marked as deleted and still dirty
10098        item.read_with(cx, |item, _| {
10099            assert!(
10100                item.has_deleted_file,
10101                "Item should be marked as having deleted file"
10102            );
10103            assert!(item.is_dirty, "Item should still be dirty");
10104        });
10105    }
10106
10107    /// Tests that navigation history is cleaned up when files are auto-closed
10108    /// due to deletion from disk.
10109    #[gpui::test]
10110    async fn test_close_on_disk_deletion_cleans_navigation_history(cx: &mut TestAppContext) {
10111        init_test(cx);
10112
10113        // Enable the close_on_file_delete setting
10114        cx.update_global(|store: &mut SettingsStore, cx| {
10115            store.update_user_settings(cx, |settings| {
10116                settings.workspace.close_on_file_delete = Some(true);
10117            });
10118        });
10119
10120        let fs = FakeFs::new(cx.background_executor.clone());
10121        let project = Project::test(fs, [], cx).await;
10122        let (workspace, cx) =
10123            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10124        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10125
10126        // Create test items
10127        let item1 = cx.new(|cx| {
10128            TestItem::new(cx)
10129                .with_label("test1.txt")
10130                .with_project_items(&[TestProjectItem::new(1, "test1.txt", cx)])
10131        });
10132        let item1_id = item1.item_id();
10133
10134        let item2 = cx.new(|cx| {
10135            TestItem::new(cx)
10136                .with_label("test2.txt")
10137                .with_project_items(&[TestProjectItem::new(2, "test2.txt", cx)])
10138        });
10139
10140        // Add items to workspace
10141        workspace.update_in(cx, |workspace, window, cx| {
10142            workspace.add_item(
10143                pane.clone(),
10144                Box::new(item1.clone()),
10145                None,
10146                false,
10147                false,
10148                window,
10149                cx,
10150            );
10151            workspace.add_item(
10152                pane.clone(),
10153                Box::new(item2.clone()),
10154                None,
10155                false,
10156                false,
10157                window,
10158                cx,
10159            );
10160        });
10161
10162        // Activate item1 to ensure it gets navigation entries
10163        pane.update_in(cx, |pane, window, cx| {
10164            pane.activate_item(0, true, true, window, cx);
10165        });
10166
10167        // Switch to item2 and back to create navigation history
10168        pane.update_in(cx, |pane, window, cx| {
10169            pane.activate_item(1, true, true, window, cx);
10170        });
10171        cx.run_until_parked();
10172
10173        pane.update_in(cx, |pane, window, cx| {
10174            pane.activate_item(0, true, true, window, cx);
10175        });
10176        cx.run_until_parked();
10177
10178        // Simulate file deletion for item1
10179        item1.update(cx, |item, _| {
10180            item.set_has_deleted_file(true);
10181        });
10182
10183        // Emit UpdateTab event to trigger the close behavior
10184        item1.update(cx, |_, cx| {
10185            cx.emit(ItemEvent::UpdateTab);
10186        });
10187        cx.run_until_parked();
10188
10189        // Verify item1 was closed
10190        pane.read_with(cx, |pane, _| {
10191            assert_eq!(
10192                pane.items().count(),
10193                1,
10194                "Should have 1 item remaining after auto-close"
10195            );
10196        });
10197
10198        // Check navigation history after close
10199        let has_item = pane.read_with(cx, |pane, cx| {
10200            let mut has_item = false;
10201            pane.nav_history().for_each_entry(cx, |entry, _| {
10202                if entry.item.id() == item1_id {
10203                    has_item = true;
10204                }
10205            });
10206            has_item
10207        });
10208
10209        assert!(
10210            !has_item,
10211            "Navigation history should not contain closed item entries"
10212        );
10213    }
10214
10215    #[gpui::test]
10216    async fn test_no_save_prompt_when_dirty_multi_buffer_closed_with_all_of_its_dirty_items_present_in_the_pane(
10217        cx: &mut TestAppContext,
10218    ) {
10219        init_test(cx);
10220
10221        let fs = FakeFs::new(cx.background_executor.clone());
10222        let project = Project::test(fs, [], cx).await;
10223        let (workspace, cx) =
10224            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10225        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10226
10227        let dirty_regular_buffer = cx.new(|cx| {
10228            TestItem::new(cx)
10229                .with_dirty(true)
10230                .with_label("1.txt")
10231                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10232        });
10233        let dirty_regular_buffer_2 = cx.new(|cx| {
10234            TestItem::new(cx)
10235                .with_dirty(true)
10236                .with_label("2.txt")
10237                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10238        });
10239        let clear_regular_buffer = cx.new(|cx| {
10240            TestItem::new(cx)
10241                .with_label("3.txt")
10242                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
10243        });
10244
10245        let dirty_multi_buffer = cx.new(|cx| {
10246            TestItem::new(cx)
10247                .with_dirty(true)
10248                .with_buffer_kind(ItemBufferKind::Multibuffer)
10249                .with_label("Fake Project Search")
10250                .with_project_items(&[
10251                    dirty_regular_buffer.read(cx).project_items[0].clone(),
10252                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
10253                    clear_regular_buffer.read(cx).project_items[0].clone(),
10254                ])
10255        });
10256        workspace.update_in(cx, |workspace, window, cx| {
10257            workspace.add_item(
10258                pane.clone(),
10259                Box::new(dirty_regular_buffer.clone()),
10260                None,
10261                false,
10262                false,
10263                window,
10264                cx,
10265            );
10266            workspace.add_item(
10267                pane.clone(),
10268                Box::new(dirty_regular_buffer_2.clone()),
10269                None,
10270                false,
10271                false,
10272                window,
10273                cx,
10274            );
10275            workspace.add_item(
10276                pane.clone(),
10277                Box::new(dirty_multi_buffer.clone()),
10278                None,
10279                false,
10280                false,
10281                window,
10282                cx,
10283            );
10284        });
10285
10286        pane.update_in(cx, |pane, window, cx| {
10287            pane.activate_item(2, true, true, window, cx);
10288            assert_eq!(
10289                pane.active_item().unwrap().item_id(),
10290                dirty_multi_buffer.item_id(),
10291                "Should select the multi buffer in the pane"
10292            );
10293        });
10294        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
10295            pane.close_active_item(
10296                &CloseActiveItem {
10297                    save_intent: None,
10298                    close_pinned: false,
10299                },
10300                window,
10301                cx,
10302            )
10303        });
10304        cx.background_executor.run_until_parked();
10305        assert!(
10306            !cx.has_pending_prompt(),
10307            "All dirty items from the multi buffer are in the pane still, no save prompts should be shown"
10308        );
10309        close_multi_buffer_task
10310            .await
10311            .expect("Closing multi buffer failed");
10312        pane.update(cx, |pane, cx| {
10313            assert_eq!(dirty_regular_buffer.read(cx).save_count, 0);
10314            assert_eq!(dirty_multi_buffer.read(cx).save_count, 0);
10315            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 0);
10316            assert_eq!(
10317                pane.items()
10318                    .map(|item| item.item_id())
10319                    .sorted()
10320                    .collect::<Vec<_>>(),
10321                vec![
10322                    dirty_regular_buffer.item_id(),
10323                    dirty_regular_buffer_2.item_id(),
10324                ],
10325                "Should have no multi buffer left in the pane"
10326            );
10327            assert!(dirty_regular_buffer.read(cx).is_dirty);
10328            assert!(dirty_regular_buffer_2.read(cx).is_dirty);
10329        });
10330    }
10331
10332    #[gpui::test]
10333    async fn test_move_focused_panel_to_next_position(cx: &mut gpui::TestAppContext) {
10334        init_test(cx);
10335        let fs = FakeFs::new(cx.executor());
10336        let project = Project::test(fs, [], cx).await;
10337        let (workspace, cx) =
10338            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10339
10340        // Add a new panel to the right dock, opening the dock and setting the
10341        // focus to the new panel.
10342        let panel = workspace.update_in(cx, |workspace, window, cx| {
10343            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
10344            workspace.add_panel(panel.clone(), window, cx);
10345
10346            workspace
10347                .right_dock()
10348                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
10349
10350            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10351
10352            panel
10353        });
10354
10355        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10356        // panel to the next valid position which, in this case, is the left
10357        // dock.
10358        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10359        workspace.update(cx, |workspace, cx| {
10360            assert!(workspace.left_dock().read(cx).is_open());
10361            assert_eq!(panel.read(cx).position, DockPosition::Left);
10362        });
10363
10364        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10365        // panel to the next valid position which, in this case, is the bottom
10366        // dock.
10367        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10368        workspace.update(cx, |workspace, cx| {
10369            assert!(workspace.bottom_dock().read(cx).is_open());
10370            assert_eq!(panel.read(cx).position, DockPosition::Bottom);
10371        });
10372
10373        // Dispatch the `MoveFocusedPanelToNextPosition` action again, this time
10374        // around moving the panel to its initial position, the right dock.
10375        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10376        workspace.update(cx, |workspace, cx| {
10377            assert!(workspace.right_dock().read(cx).is_open());
10378            assert_eq!(panel.read(cx).position, DockPosition::Right);
10379        });
10380
10381        // Remove focus from the panel, ensuring that, if the panel is not
10382        // focused, the `MoveFocusedPanelToNextPosition` action does not update
10383        // the panel's position, so the panel is still in the right dock.
10384        workspace.update_in(cx, |workspace, window, cx| {
10385            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10386        });
10387
10388        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10389        workspace.update(cx, |workspace, cx| {
10390            assert!(workspace.right_dock().read(cx).is_open());
10391            assert_eq!(panel.read(cx).position, DockPosition::Right);
10392        });
10393    }
10394
10395    #[gpui::test]
10396    async fn test_moving_items_create_panes(cx: &mut TestAppContext) {
10397        init_test(cx);
10398
10399        let fs = FakeFs::new(cx.executor());
10400        let project = Project::test(fs, [], cx).await;
10401        let (workspace, cx) =
10402            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10403
10404        let item_1 = cx.new(|cx| {
10405            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10406        });
10407        workspace.update_in(cx, |workspace, window, cx| {
10408            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10409            workspace.move_item_to_pane_in_direction(
10410                &MoveItemToPaneInDirection {
10411                    direction: SplitDirection::Right,
10412                    focus: true,
10413                    clone: false,
10414                },
10415                window,
10416                cx,
10417            );
10418            workspace.move_item_to_pane_at_index(
10419                &MoveItemToPane {
10420                    destination: 3,
10421                    focus: true,
10422                    clone: false,
10423                },
10424                window,
10425                cx,
10426            );
10427
10428            assert_eq!(workspace.panes.len(), 1, "No new panes were created");
10429            assert_eq!(
10430                pane_items_paths(&workspace.active_pane, cx),
10431                vec!["first.txt".to_string()],
10432                "Single item was not moved anywhere"
10433            );
10434        });
10435
10436        let item_2 = cx.new(|cx| {
10437            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "second.txt", cx)])
10438        });
10439        workspace.update_in(cx, |workspace, window, cx| {
10440            workspace.add_item_to_active_pane(Box::new(item_2), None, true, window, cx);
10441            assert_eq!(
10442                pane_items_paths(&workspace.panes[0], cx),
10443                vec!["first.txt".to_string(), "second.txt".to_string()],
10444            );
10445            workspace.move_item_to_pane_in_direction(
10446                &MoveItemToPaneInDirection {
10447                    direction: SplitDirection::Right,
10448                    focus: true,
10449                    clone: false,
10450                },
10451                window,
10452                cx,
10453            );
10454
10455            assert_eq!(workspace.panes.len(), 2, "A new pane should be created");
10456            assert_eq!(
10457                pane_items_paths(&workspace.panes[0], cx),
10458                vec!["first.txt".to_string()],
10459                "After moving, one item should be left in the original pane"
10460            );
10461            assert_eq!(
10462                pane_items_paths(&workspace.panes[1], cx),
10463                vec!["second.txt".to_string()],
10464                "New item should have been moved to the new pane"
10465            );
10466        });
10467
10468        let item_3 = cx.new(|cx| {
10469            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "third.txt", cx)])
10470        });
10471        workspace.update_in(cx, |workspace, window, cx| {
10472            let original_pane = workspace.panes[0].clone();
10473            workspace.set_active_pane(&original_pane, window, cx);
10474            workspace.add_item_to_active_pane(Box::new(item_3), None, true, window, cx);
10475            assert_eq!(workspace.panes.len(), 2, "No new panes were created");
10476            assert_eq!(
10477                pane_items_paths(&workspace.active_pane, cx),
10478                vec!["first.txt".to_string(), "third.txt".to_string()],
10479                "New pane should be ready to move one item out"
10480            );
10481
10482            workspace.move_item_to_pane_at_index(
10483                &MoveItemToPane {
10484                    destination: 3,
10485                    focus: true,
10486                    clone: false,
10487                },
10488                window,
10489                cx,
10490            );
10491            assert_eq!(workspace.panes.len(), 3, "A new pane should be created");
10492            assert_eq!(
10493                pane_items_paths(&workspace.active_pane, cx),
10494                vec!["first.txt".to_string()],
10495                "After moving, one item should be left in the original pane"
10496            );
10497            assert_eq!(
10498                pane_items_paths(&workspace.panes[1], cx),
10499                vec!["second.txt".to_string()],
10500                "Previously created pane should be unchanged"
10501            );
10502            assert_eq!(
10503                pane_items_paths(&workspace.panes[2], cx),
10504                vec!["third.txt".to_string()],
10505                "New item should have been moved to the new pane"
10506            );
10507        });
10508    }
10509
10510    #[gpui::test]
10511    async fn test_moving_items_can_clone_panes(cx: &mut TestAppContext) {
10512        init_test(cx);
10513
10514        let fs = FakeFs::new(cx.executor());
10515        let project = Project::test(fs, [], cx).await;
10516        let (workspace, cx) =
10517            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10518
10519        let item_1 = cx.new(|cx| {
10520            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10521        });
10522        workspace.update_in(cx, |workspace, window, cx| {
10523            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10524            workspace.move_item_to_pane_in_direction(
10525                &MoveItemToPaneInDirection {
10526                    direction: SplitDirection::Right,
10527                    focus: true,
10528                    clone: true,
10529                },
10530                window,
10531                cx,
10532            );
10533            workspace.move_item_to_pane_at_index(
10534                &MoveItemToPane {
10535                    destination: 3,
10536                    focus: true,
10537                    clone: true,
10538                },
10539                window,
10540                cx,
10541            );
10542        });
10543        cx.run_until_parked();
10544
10545        workspace.update(cx, |workspace, cx| {
10546            assert_eq!(workspace.panes.len(), 3, "Two new panes were created");
10547            for pane in workspace.panes() {
10548                assert_eq!(
10549                    pane_items_paths(pane, cx),
10550                    vec!["first.txt".to_string()],
10551                    "Single item exists in all panes"
10552                );
10553            }
10554        });
10555
10556        // verify that the active pane has been updated after waiting for the
10557        // pane focus event to fire and resolve
10558        workspace.read_with(cx, |workspace, _app| {
10559            assert_eq!(
10560                workspace.active_pane(),
10561                &workspace.panes[2],
10562                "The third pane should be the active one: {:?}",
10563                workspace.panes
10564            );
10565        })
10566    }
10567
10568    mod register_project_item_tests {
10569
10570        use super::*;
10571
10572        // View
10573        struct TestPngItemView {
10574            focus_handle: FocusHandle,
10575        }
10576        // Model
10577        struct TestPngItem {}
10578
10579        impl project::ProjectItem for TestPngItem {
10580            fn try_open(
10581                _project: &Entity<Project>,
10582                path: &ProjectPath,
10583                cx: &mut App,
10584            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10585                if path.path.extension().unwrap() == "png" {
10586                    Some(cx.spawn(async move |cx| cx.new(|_| TestPngItem {})))
10587                } else {
10588                    None
10589                }
10590            }
10591
10592            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10593                None
10594            }
10595
10596            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10597                None
10598            }
10599
10600            fn is_dirty(&self) -> bool {
10601                false
10602            }
10603        }
10604
10605        impl Item for TestPngItemView {
10606            type Event = ();
10607            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10608                "".into()
10609            }
10610        }
10611        impl EventEmitter<()> for TestPngItemView {}
10612        impl Focusable for TestPngItemView {
10613            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10614                self.focus_handle.clone()
10615            }
10616        }
10617
10618        impl Render for TestPngItemView {
10619            fn render(
10620                &mut self,
10621                _window: &mut Window,
10622                _cx: &mut Context<Self>,
10623            ) -> impl IntoElement {
10624                Empty
10625            }
10626        }
10627
10628        impl ProjectItem for TestPngItemView {
10629            type Item = TestPngItem;
10630
10631            fn for_project_item(
10632                _project: Entity<Project>,
10633                _pane: Option<&Pane>,
10634                _item: Entity<Self::Item>,
10635                _: &mut Window,
10636                cx: &mut Context<Self>,
10637            ) -> Self
10638            where
10639                Self: Sized,
10640            {
10641                Self {
10642                    focus_handle: cx.focus_handle(),
10643                }
10644            }
10645        }
10646
10647        // View
10648        struct TestIpynbItemView {
10649            focus_handle: FocusHandle,
10650        }
10651        // Model
10652        struct TestIpynbItem {}
10653
10654        impl project::ProjectItem for TestIpynbItem {
10655            fn try_open(
10656                _project: &Entity<Project>,
10657                path: &ProjectPath,
10658                cx: &mut App,
10659            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10660                if path.path.extension().unwrap() == "ipynb" {
10661                    Some(cx.spawn(async move |cx| cx.new(|_| TestIpynbItem {})))
10662                } else {
10663                    None
10664                }
10665            }
10666
10667            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10668                None
10669            }
10670
10671            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10672                None
10673            }
10674
10675            fn is_dirty(&self) -> bool {
10676                false
10677            }
10678        }
10679
10680        impl Item for TestIpynbItemView {
10681            type Event = ();
10682            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10683                "".into()
10684            }
10685        }
10686        impl EventEmitter<()> for TestIpynbItemView {}
10687        impl Focusable for TestIpynbItemView {
10688            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10689                self.focus_handle.clone()
10690            }
10691        }
10692
10693        impl Render for TestIpynbItemView {
10694            fn render(
10695                &mut self,
10696                _window: &mut Window,
10697                _cx: &mut Context<Self>,
10698            ) -> impl IntoElement {
10699                Empty
10700            }
10701        }
10702
10703        impl ProjectItem for TestIpynbItemView {
10704            type Item = TestIpynbItem;
10705
10706            fn for_project_item(
10707                _project: Entity<Project>,
10708                _pane: Option<&Pane>,
10709                _item: Entity<Self::Item>,
10710                _: &mut Window,
10711                cx: &mut Context<Self>,
10712            ) -> Self
10713            where
10714                Self: Sized,
10715            {
10716                Self {
10717                    focus_handle: cx.focus_handle(),
10718                }
10719            }
10720        }
10721
10722        struct TestAlternatePngItemView {
10723            focus_handle: FocusHandle,
10724        }
10725
10726        impl Item for TestAlternatePngItemView {
10727            type Event = ();
10728            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10729                "".into()
10730            }
10731        }
10732
10733        impl EventEmitter<()> for TestAlternatePngItemView {}
10734        impl Focusable for TestAlternatePngItemView {
10735            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10736                self.focus_handle.clone()
10737            }
10738        }
10739
10740        impl Render for TestAlternatePngItemView {
10741            fn render(
10742                &mut self,
10743                _window: &mut Window,
10744                _cx: &mut Context<Self>,
10745            ) -> impl IntoElement {
10746                Empty
10747            }
10748        }
10749
10750        impl ProjectItem for TestAlternatePngItemView {
10751            type Item = TestPngItem;
10752
10753            fn for_project_item(
10754                _project: Entity<Project>,
10755                _pane: Option<&Pane>,
10756                _item: Entity<Self::Item>,
10757                _: &mut Window,
10758                cx: &mut Context<Self>,
10759            ) -> Self
10760            where
10761                Self: Sized,
10762            {
10763                Self {
10764                    focus_handle: cx.focus_handle(),
10765                }
10766            }
10767        }
10768
10769        #[gpui::test]
10770        async fn test_register_project_item(cx: &mut TestAppContext) {
10771            init_test(cx);
10772
10773            cx.update(|cx| {
10774                register_project_item::<TestPngItemView>(cx);
10775                register_project_item::<TestIpynbItemView>(cx);
10776            });
10777
10778            let fs = FakeFs::new(cx.executor());
10779            fs.insert_tree(
10780                "/root1",
10781                json!({
10782                    "one.png": "BINARYDATAHERE",
10783                    "two.ipynb": "{ totally a notebook }",
10784                    "three.txt": "editing text, sure why not?"
10785                }),
10786            )
10787            .await;
10788
10789            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10790            let (workspace, cx) =
10791                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10792
10793            let worktree_id = project.update(cx, |project, cx| {
10794                project.worktrees(cx).next().unwrap().read(cx).id()
10795            });
10796
10797            let handle = workspace
10798                .update_in(cx, |workspace, window, cx| {
10799                    let project_path = (worktree_id, rel_path("one.png"));
10800                    workspace.open_path(project_path, None, true, window, cx)
10801                })
10802                .await
10803                .unwrap();
10804
10805            // Now we can check if the handle we got back errored or not
10806            assert_eq!(
10807                handle.to_any().entity_type(),
10808                TypeId::of::<TestPngItemView>()
10809            );
10810
10811            let handle = workspace
10812                .update_in(cx, |workspace, window, cx| {
10813                    let project_path = (worktree_id, rel_path("two.ipynb"));
10814                    workspace.open_path(project_path, None, true, window, cx)
10815                })
10816                .await
10817                .unwrap();
10818
10819            assert_eq!(
10820                handle.to_any().entity_type(),
10821                TypeId::of::<TestIpynbItemView>()
10822            );
10823
10824            let handle = workspace
10825                .update_in(cx, |workspace, window, cx| {
10826                    let project_path = (worktree_id, rel_path("three.txt"));
10827                    workspace.open_path(project_path, None, true, window, cx)
10828                })
10829                .await;
10830            assert!(handle.is_err());
10831        }
10832
10833        #[gpui::test]
10834        async fn test_register_project_item_two_enter_one_leaves(cx: &mut TestAppContext) {
10835            init_test(cx);
10836
10837            cx.update(|cx| {
10838                register_project_item::<TestPngItemView>(cx);
10839                register_project_item::<TestAlternatePngItemView>(cx);
10840            });
10841
10842            let fs = FakeFs::new(cx.executor());
10843            fs.insert_tree(
10844                "/root1",
10845                json!({
10846                    "one.png": "BINARYDATAHERE",
10847                    "two.ipynb": "{ totally a notebook }",
10848                    "three.txt": "editing text, sure why not?"
10849                }),
10850            )
10851            .await;
10852            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10853            let (workspace, cx) =
10854                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10855            let worktree_id = project.update(cx, |project, cx| {
10856                project.worktrees(cx).next().unwrap().read(cx).id()
10857            });
10858
10859            let handle = workspace
10860                .update_in(cx, |workspace, window, cx| {
10861                    let project_path = (worktree_id, rel_path("one.png"));
10862                    workspace.open_path(project_path, None, true, window, cx)
10863                })
10864                .await
10865                .unwrap();
10866
10867            // This _must_ be the second item registered
10868            assert_eq!(
10869                handle.to_any().entity_type(),
10870                TypeId::of::<TestAlternatePngItemView>()
10871            );
10872
10873            let handle = workspace
10874                .update_in(cx, |workspace, window, cx| {
10875                    let project_path = (worktree_id, rel_path("three.txt"));
10876                    workspace.open_path(project_path, None, true, window, cx)
10877                })
10878                .await;
10879            assert!(handle.is_err());
10880        }
10881    }
10882
10883    #[gpui::test]
10884    async fn test_status_bar_visibility(cx: &mut TestAppContext) {
10885        init_test(cx);
10886
10887        let fs = FakeFs::new(cx.executor());
10888        let project = Project::test(fs, [], cx).await;
10889        let (workspace, _cx) =
10890            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10891
10892        // Test with status bar shown (default)
10893        workspace.read_with(cx, |workspace, cx| {
10894            let visible = workspace.status_bar_visible(cx);
10895            assert!(visible, "Status bar should be visible by default");
10896        });
10897
10898        // Test with status bar hidden
10899        cx.update_global(|store: &mut SettingsStore, cx| {
10900            store.update_user_settings(cx, |settings| {
10901                settings.status_bar.get_or_insert_default().show = Some(false);
10902            });
10903        });
10904
10905        workspace.read_with(cx, |workspace, cx| {
10906            let visible = workspace.status_bar_visible(cx);
10907            assert!(!visible, "Status bar should be hidden when show is false");
10908        });
10909
10910        // Test with status bar shown explicitly
10911        cx.update_global(|store: &mut SettingsStore, cx| {
10912            store.update_user_settings(cx, |settings| {
10913                settings.status_bar.get_or_insert_default().show = Some(true);
10914            });
10915        });
10916
10917        workspace.read_with(cx, |workspace, cx| {
10918            let visible = workspace.status_bar_visible(cx);
10919            assert!(visible, "Status bar should be visible when show is true");
10920        });
10921    }
10922
10923    fn pane_items_paths(pane: &Entity<Pane>, cx: &App) -> Vec<String> {
10924        pane.read(cx)
10925            .items()
10926            .flat_map(|item| {
10927                item.project_paths(cx)
10928                    .into_iter()
10929                    .map(|path| path.path.display(PathStyle::local()).into_owned())
10930            })
10931            .collect()
10932    }
10933
10934    pub fn init_test(cx: &mut TestAppContext) {
10935        cx.update(|cx| {
10936            let settings_store = SettingsStore::test(cx);
10937            cx.set_global(settings_store);
10938            theme::init(theme::LoadThemes::JustBase, cx);
10939            language::init(cx);
10940            crate::init_settings(cx);
10941            Project::init_settings(cx);
10942        });
10943    }
10944
10945    fn dirty_project_item(id: u64, path: &str, cx: &mut App) -> Entity<TestProjectItem> {
10946        let item = TestProjectItem::new(id, path, cx);
10947        item.update(cx, |item, _| {
10948            item.is_dirty = true;
10949        });
10950        item
10951    }
10952}