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