workspace.rs

    1pub mod dock;
    2pub mod history_manager;
    3pub mod invalid_item_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;
   22use encoding_rs::Encoding;
   23use encoding_rs::UTF_8;
   24use fs::encodings::EncodingWrapper;
   25pub use path_list::PathList;
   26pub use toast_layer::{ToastAction, ToastLayer, ToastView};
   27
   28use anyhow::{Context as _, Result, anyhow};
   29use call::{ActiveCall, call_settings::CallSettings};
   30use client::{
   31    ChannelId, Client, ErrorExt, Status, TypedEnvelope, UserStore,
   32    proto::{self, ErrorCode, PanelId, PeerId},
   33};
   34use collections::{HashMap, HashSet, hash_map};
   35use dock::{Dock, DockPosition, PanelButtons, PanelHandle, RESIZE_HANDLE_SIZE};
   36use futures::{
   37    Future, FutureExt, StreamExt,
   38    channel::{
   39        mpsc::{self, UnboundedReceiver, UnboundedSender},
   40        oneshot,
   41    },
   42    future::{Shared, try_join_all},
   43};
   44use gpui::{
   45    Action, AnyEntity, AnyView, AnyWeakView, App, AsyncApp, AsyncWindowContext, Bounds, Context,
   46    CursorStyle, Decorations, DragMoveEvent, Entity, EntityId, EventEmitter, FocusHandle,
   47    Focusable, Global, HitboxBehavior, Hsla, KeyContext, Keystroke, ManagedView, MouseButton,
   48    PathPromptOptions, Point, PromptLevel, Render, ResizeEdge, Size, Stateful, Subscription,
   49    SystemWindowTabController, Task, Tiling, WeakEntity, WindowBounds, WindowHandle, WindowId,
   50    WindowOptions, actions, canvas, point, relative, size, transparent_black,
   51};
   52pub use history_manager::*;
   53pub use item::{
   54    FollowableItem, FollowableItemHandle, Item, ItemHandle, ItemSettings, PreviewTabsSettings,
   55    ProjectItem, SerializableItem, SerializableItemHandle, WeakItemHandle,
   56};
   57use itertools::Itertools;
   58use language::{Buffer, LanguageRegistry, Rope, language_settings::all_language_settings};
   59pub use modal_layer::*;
   60use node_runtime::NodeRuntime;
   61use notifications::{
   62    DetachAndPromptErr, Notifications, dismiss_app_notification,
   63    simple_message_notification::MessageNotification,
   64};
   65pub use pane::*;
   66pub use pane_group::{
   67    ActivePaneDecorator, HANDLE_HITBOX_SIZE, Member, PaneAxis, PaneGroup, PaneRenderContext,
   68    SplitDirection,
   69};
   70use persistence::{DB, SerializedWindowBounds, model::SerializedWorkspace};
   71pub use persistence::{
   72    DB as WORKSPACE_DB, WorkspaceDb, delete_unloaded_items,
   73    model::{ItemId, SerializedWorkspaceLocation},
   74};
   75use postage::stream::Stream;
   76use project::{
   77    DirectoryLister, Project, ProjectEntryId, ProjectPath, ResolvedPath, Worktree, WorktreeId,
   78    WorktreeSettings,
   79    debugger::{breakpoint_store::BreakpointStoreEvent, session::ThreadStatus},
   80    toolchain_store::ToolchainStoreEvent,
   81};
   82use remote::{
   83    RemoteClientDelegate, RemoteConnection, RemoteConnectionOptions,
   84    remote_client::ConnectionIdentifier,
   85};
   86use schemars::JsonSchema;
   87use serde::Deserialize;
   88use session::AppSession;
   89use settings::{CenteredPaddingSettings, Settings, SettingsLocation, update_settings_file};
   90use shared_screen::SharedScreen;
   91use sqlez::{
   92    bindable::{Bind, Column, StaticColumnCount},
   93    statement::Statement,
   94};
   95use status_bar::StatusBar;
   96pub use status_bar::StatusItemView;
   97use std::{
   98    any::TypeId,
   99    borrow::Cow,
  100    cell::RefCell,
  101    cmp,
  102    collections::{VecDeque, hash_map::DefaultHasher},
  103    env,
  104    hash::{Hash, Hasher},
  105    path::{Path, PathBuf},
  106    process::ExitStatus,
  107    rc::Rc,
  108    sync::{
  109        Arc, LazyLock, Weak,
  110        atomic::{AtomicBool, AtomicUsize},
  111    },
  112    time::Duration,
  113};
  114use task::{DebugScenario, SpawnInTerminal, TaskContext};
  115use theme::{ActiveTheme, GlobalTheme, SystemAppearance, ThemeSettings};
  116pub use toolbar::{Toolbar, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView};
  117pub use ui;
  118use ui::{Window, prelude::*};
  119use util::{
  120    ResultExt, TryFutureExt,
  121    paths::{PathStyle, SanitizedPath},
  122    rel_path::RelPath,
  123    serde::default_true,
  124};
  125use uuid::Uuid;
  126pub use workspace_settings::{
  127    AutosaveSetting, BottomDockLayout, RestoreOnStartupBehavior, StatusBarSettings, TabBarSettings,
  128    WorkspaceSettings,
  129};
  130use zed_actions::{Spawn, feedback::FileBugReport};
  131
  132use crate::persistence::{
  133    SerializedAxis,
  134    model::{DockData, DockStructure, SerializedItem, SerializedPane, SerializedPaneGroup},
  135};
  136use crate::{item::ItemBufferKind, notifications::NotificationId};
  137
  138pub const SERIALIZATION_THROTTLE_TIME: Duration = Duration::from_millis(200);
  139
  140static ZED_WINDOW_SIZE: LazyLock<Option<Size<Pixels>>> = LazyLock::new(|| {
  141    env::var("ZED_WINDOW_SIZE")
  142        .ok()
  143        .as_deref()
  144        .and_then(parse_pixel_size_env_var)
  145});
  146
  147static ZED_WINDOW_POSITION: LazyLock<Option<Point<Pixels>>> = LazyLock::new(|| {
  148    env::var("ZED_WINDOW_POSITION")
  149        .ok()
  150        .as_deref()
  151        .and_then(parse_pixel_position_env_var)
  152});
  153
  154pub trait TerminalProvider {
  155    fn spawn(
  156        &self,
  157        task: SpawnInTerminal,
  158        window: &mut Window,
  159        cx: &mut App,
  160    ) -> Task<Option<Result<ExitStatus>>>;
  161}
  162
  163pub trait DebuggerProvider {
  164    // `active_buffer` is used to resolve build task's name against language-specific tasks.
  165    fn start_session(
  166        &self,
  167        definition: DebugScenario,
  168        task_context: TaskContext,
  169        active_buffer: Option<Entity<Buffer>>,
  170        worktree_id: Option<WorktreeId>,
  171        window: &mut Window,
  172        cx: &mut App,
  173    );
  174
  175    fn spawn_task_or_modal(
  176        &self,
  177        workspace: &mut Workspace,
  178        action: &Spawn,
  179        window: &mut Window,
  180        cx: &mut Context<Workspace>,
  181    );
  182
  183    fn task_scheduled(&self, cx: &mut App);
  184    fn debug_scenario_scheduled(&self, cx: &mut App);
  185    fn debug_scenario_scheduled_last(&self, cx: &App) -> bool;
  186
  187    fn active_thread_state(&self, cx: &App) -> Option<ThreadStatus>;
  188}
  189
  190actions!(
  191    workspace,
  192    [
  193        /// Activates the next pane in the workspace.
  194        ActivateNextPane,
  195        /// Activates the previous pane in the workspace.
  196        ActivatePreviousPane,
  197        /// Switches to the next window.
  198        ActivateNextWindow,
  199        /// Switches to the previous window.
  200        ActivatePreviousWindow,
  201        /// Adds a folder to the current project.
  202        AddFolderToProject,
  203        /// Clears all notifications.
  204        ClearAllNotifications,
  205        /// Closes the active dock.
  206        CloseActiveDock,
  207        /// Closes all docks.
  208        CloseAllDocks,
  209        /// Toggles all docks.
  210        ToggleAllDocks,
  211        /// Closes the current window.
  212        CloseWindow,
  213        /// Opens the feedback dialog.
  214        Feedback,
  215        /// Follows the next collaborator in the session.
  216        FollowNextCollaborator,
  217        /// Moves the focused panel to the next position.
  218        MoveFocusedPanelToNextPosition,
  219        /// Opens a new terminal in the center.
  220        NewCenterTerminal,
  221        /// Creates a new file.
  222        NewFile,
  223        /// Creates a new file in a vertical split.
  224        NewFileSplitVertical,
  225        /// Creates a new file in a horizontal split.
  226        NewFileSplitHorizontal,
  227        /// Opens a new search.
  228        NewSearch,
  229        /// Opens a new terminal.
  230        NewTerminal,
  231        /// Opens a new window.
  232        NewWindow,
  233        /// Opens a file or directory.
  234        Open,
  235        /// Opens multiple files.
  236        OpenFiles,
  237        /// Opens the current location in terminal.
  238        OpenInTerminal,
  239        /// Opens the component preview.
  240        OpenComponentPreview,
  241        /// Reloads the active item.
  242        ReloadActiveItem,
  243        /// Resets the active dock to its default size.
  244        ResetActiveDockSize,
  245        /// Resets all open docks to their default sizes.
  246        ResetOpenDocksSize,
  247        /// Reloads the application
  248        Reload,
  249        /// Saves the current file with a new name.
  250        SaveAs,
  251        /// Saves without formatting.
  252        SaveWithoutFormat,
  253        /// Shuts down all debug adapters.
  254        ShutdownDebugAdapters,
  255        /// Suppresses the current notification.
  256        SuppressNotification,
  257        /// Toggles the bottom dock.
  258        ToggleBottomDock,
  259        /// Toggles centered layout mode.
  260        ToggleCenteredLayout,
  261        /// Toggles edit prediction feature globally for all files.
  262        ToggleEditPrediction,
  263        /// Toggles the left dock.
  264        ToggleLeftDock,
  265        /// Toggles the right dock.
  266        ToggleRightDock,
  267        /// Toggles zoom on the active pane.
  268        ToggleZoom,
  269        /// Stops following a collaborator.
  270        Unfollow,
  271        /// Restores the banner.
  272        RestoreBanner,
  273        /// Toggles expansion of the selected item.
  274        ToggleExpandItem,
  275    ]
  276);
  277
  278/// Activates a specific pane by its index.
  279#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  280#[action(namespace = workspace)]
  281pub struct ActivatePane(pub usize);
  282
  283/// Moves an item to a specific pane by index.
  284#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  285#[action(namespace = workspace)]
  286#[serde(deny_unknown_fields)]
  287pub struct MoveItemToPane {
  288    #[serde(default = "default_1")]
  289    pub destination: usize,
  290    #[serde(default = "default_true")]
  291    pub focus: bool,
  292    #[serde(default)]
  293    pub clone: bool,
  294}
  295
  296fn default_1() -> usize {
  297    1
  298}
  299
  300/// Moves an item to a pane in the specified direction.
  301#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  302#[action(namespace = workspace)]
  303#[serde(deny_unknown_fields)]
  304pub struct MoveItemToPaneInDirection {
  305    #[serde(default = "default_right")]
  306    pub direction: SplitDirection,
  307    #[serde(default = "default_true")]
  308    pub focus: bool,
  309    #[serde(default)]
  310    pub clone: bool,
  311}
  312
  313/// Creates a new file in a split of the desired direction.
  314#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  315#[action(namespace = workspace)]
  316#[serde(deny_unknown_fields)]
  317pub struct NewFileSplit(pub SplitDirection);
  318
  319fn default_right() -> SplitDirection {
  320    SplitDirection::Right
  321}
  322
  323/// Saves all open files in the workspace.
  324#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  325#[action(namespace = workspace)]
  326#[serde(deny_unknown_fields)]
  327pub struct SaveAll {
  328    #[serde(default)]
  329    pub save_intent: Option<SaveIntent>,
  330}
  331
  332/// Saves the current file with the specified options.
  333#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  334#[action(namespace = workspace)]
  335#[serde(deny_unknown_fields)]
  336pub struct Save {
  337    #[serde(default)]
  338    pub save_intent: Option<SaveIntent>,
  339}
  340
  341/// Closes all items and panes in the workspace.
  342#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  343#[action(namespace = workspace)]
  344#[serde(deny_unknown_fields)]
  345pub struct CloseAllItemsAndPanes {
  346    #[serde(default)]
  347    pub save_intent: Option<SaveIntent>,
  348}
  349
  350/// Closes all inactive tabs and panes in the workspace.
  351#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  352#[action(namespace = workspace)]
  353#[serde(deny_unknown_fields)]
  354pub struct CloseInactiveTabsAndPanes {
  355    #[serde(default)]
  356    pub save_intent: Option<SaveIntent>,
  357}
  358
  359/// Sends a sequence of keystrokes to the active element.
  360#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  361#[action(namespace = workspace)]
  362pub struct SendKeystrokes(pub String);
  363
  364actions!(
  365    project_symbols,
  366    [
  367        /// Toggles the project symbols search.
  368        #[action(name = "Toggle")]
  369        ToggleProjectSymbols
  370    ]
  371);
  372
  373/// Toggles the file finder interface.
  374#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  375#[action(namespace = file_finder, name = "Toggle")]
  376#[serde(deny_unknown_fields)]
  377pub struct ToggleFileFinder {
  378    #[serde(default)]
  379    pub separate_history: bool,
  380}
  381
  382/// Increases size of a currently focused dock by a given amount of pixels.
  383#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  384#[action(namespace = workspace)]
  385#[serde(deny_unknown_fields)]
  386pub struct IncreaseActiveDockSize {
  387    /// For 0px parameter, uses UI font size value.
  388    #[serde(default)]
  389    pub px: u32,
  390}
  391
  392/// Decreases size of a currently focused dock by a given amount of pixels.
  393#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  394#[action(namespace = workspace)]
  395#[serde(deny_unknown_fields)]
  396pub struct DecreaseActiveDockSize {
  397    /// For 0px parameter, uses UI font size value.
  398    #[serde(default)]
  399    pub px: u32,
  400}
  401
  402/// Increases size of all currently visible docks uniformly, by a given amount of pixels.
  403#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  404#[action(namespace = workspace)]
  405#[serde(deny_unknown_fields)]
  406pub struct IncreaseOpenDocksSize {
  407    /// For 0px parameter, uses UI font size value.
  408    #[serde(default)]
  409    pub px: u32,
  410}
  411
  412/// Decreases size of all currently visible docks uniformly, by a given amount of pixels.
  413#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  414#[action(namespace = workspace)]
  415#[serde(deny_unknown_fields)]
  416pub struct DecreaseOpenDocksSize {
  417    /// For 0px parameter, uses UI font size value.
  418    #[serde(default)]
  419    pub px: u32,
  420}
  421
  422actions!(
  423    workspace,
  424    [
  425        /// Activates the pane to the left.
  426        ActivatePaneLeft,
  427        /// Activates the pane to the right.
  428        ActivatePaneRight,
  429        /// Activates the pane above.
  430        ActivatePaneUp,
  431        /// Activates the pane below.
  432        ActivatePaneDown,
  433        /// Swaps the current pane with the one to the left.
  434        SwapPaneLeft,
  435        /// Swaps the current pane with the one to the right.
  436        SwapPaneRight,
  437        /// Swaps the current pane with the one above.
  438        SwapPaneUp,
  439        /// Swaps the current pane with the one below.
  440        SwapPaneDown,
  441        /// Move the current pane to be at the far left.
  442        MovePaneLeft,
  443        /// Move the current pane to be at the far right.
  444        MovePaneRight,
  445        /// Move the current pane to be at the very top.
  446        MovePaneUp,
  447        /// Move the current pane to be at the very bottom.
  448        MovePaneDown,
  449    ]
  450);
  451
  452#[derive(PartialEq, Eq, Debug)]
  453pub enum CloseIntent {
  454    /// Quit the program entirely.
  455    Quit,
  456    /// Close a window.
  457    CloseWindow,
  458    /// Replace the workspace in an existing window.
  459    ReplaceWindow,
  460}
  461
  462#[derive(Clone)]
  463pub struct Toast {
  464    id: NotificationId,
  465    msg: Cow<'static, str>,
  466    autohide: bool,
  467    on_click: Option<(Cow<'static, str>, Arc<dyn Fn(&mut Window, &mut App)>)>,
  468}
  469
  470impl Toast {
  471    pub fn new<I: Into<Cow<'static, str>>>(id: NotificationId, msg: I) -> Self {
  472        Toast {
  473            id,
  474            msg: msg.into(),
  475            on_click: None,
  476            autohide: false,
  477        }
  478    }
  479
  480    pub fn on_click<F, M>(mut self, message: M, on_click: F) -> Self
  481    where
  482        M: Into<Cow<'static, str>>,
  483        F: Fn(&mut Window, &mut App) + 'static,
  484    {
  485        self.on_click = Some((message.into(), Arc::new(on_click)));
  486        self
  487    }
  488
  489    pub fn autohide(mut self) -> Self {
  490        self.autohide = true;
  491        self
  492    }
  493}
  494
  495impl PartialEq for Toast {
  496    fn eq(&self, other: &Self) -> bool {
  497        self.id == other.id
  498            && self.msg == other.msg
  499            && self.on_click.is_some() == other.on_click.is_some()
  500    }
  501}
  502
  503/// Opens a new terminal with the specified working directory.
  504#[derive(Debug, Default, Clone, Deserialize, PartialEq, JsonSchema, Action)]
  505#[action(namespace = workspace)]
  506#[serde(deny_unknown_fields)]
  507pub struct OpenTerminal {
  508    pub working_directory: PathBuf,
  509}
  510
  511#[derive(Clone, Copy, Debug, Default, Hash, PartialEq, Eq, PartialOrd, Ord)]
  512pub struct WorkspaceId(i64);
  513
  514impl StaticColumnCount for WorkspaceId {}
  515impl Bind for WorkspaceId {
  516    fn bind(&self, statement: &Statement, start_index: i32) -> Result<i32> {
  517        self.0.bind(statement, start_index)
  518    }
  519}
  520impl Column for WorkspaceId {
  521    fn column(statement: &mut Statement, start_index: i32) -> Result<(Self, i32)> {
  522        i64::column(statement, start_index)
  523            .map(|(i, next_index)| (Self(i), next_index))
  524            .with_context(|| format!("Failed to read WorkspaceId at index {start_index}"))
  525    }
  526}
  527impl From<WorkspaceId> for i64 {
  528    fn from(val: WorkspaceId) -> Self {
  529        val.0
  530    }
  531}
  532
  533pub fn init_settings(cx: &mut App) {
  534    WorkspaceSettings::register(cx);
  535    ItemSettings::register(cx);
  536    PreviewTabsSettings::register(cx);
  537    TabBarSettings::register(cx);
  538    StatusBarSettings::register(cx);
  539}
  540
  541fn prompt_and_open_paths(app_state: Arc<AppState>, options: PathPromptOptions, cx: &mut App) {
  542    let paths = cx.prompt_for_paths(options);
  543    cx.spawn(
  544        async move |cx| match paths.await.anyhow().and_then(|res| res) {
  545            Ok(Some(paths)) => {
  546                cx.update(|cx| {
  547                    open_paths(&paths, app_state, OpenOptions::default(), cx).detach_and_log_err(cx)
  548                })
  549                .ok();
  550            }
  551            Ok(None) => {}
  552            Err(err) => {
  553                util::log_err(&err);
  554                cx.update(|cx| {
  555                    if let Some(workspace_window) = cx
  556                        .active_window()
  557                        .and_then(|window| window.downcast::<Workspace>())
  558                    {
  559                        workspace_window
  560                            .update(cx, |workspace, _, cx| {
  561                                workspace.show_portal_error(err.to_string(), cx);
  562                            })
  563                            .ok();
  564                    }
  565                })
  566                .ok();
  567            }
  568        },
  569    )
  570    .detach();
  571}
  572
  573pub fn init(app_state: Arc<AppState>, cx: &mut App) {
  574    init_settings(cx);
  575    component::init();
  576    theme_preview::init(cx);
  577    toast_layer::init(cx);
  578    history_manager::init(cx);
  579
  580    cx.on_action(|_: &CloseWindow, cx| Workspace::close_global(cx));
  581    cx.on_action(|_: &Reload, cx| reload(cx));
  582
  583    cx.on_action({
  584        let app_state = Arc::downgrade(&app_state);
  585        move |_: &Open, cx: &mut App| {
  586            if let Some(app_state) = app_state.upgrade() {
  587                prompt_and_open_paths(
  588                    app_state,
  589                    PathPromptOptions {
  590                        files: true,
  591                        directories: true,
  592                        multiple: true,
  593                        prompt: None,
  594                    },
  595                    cx,
  596                );
  597            }
  598        }
  599    });
  600    cx.on_action({
  601        let app_state = Arc::downgrade(&app_state);
  602        move |_: &OpenFiles, cx: &mut App| {
  603            let directories = cx.can_select_mixed_files_and_dirs();
  604            if let Some(app_state) = app_state.upgrade() {
  605                prompt_and_open_paths(
  606                    app_state,
  607                    PathPromptOptions {
  608                        files: true,
  609                        directories,
  610                        multiple: true,
  611                        prompt: None,
  612                    },
  613                    cx,
  614                );
  615            }
  616        }
  617    });
  618}
  619
  620type BuildProjectItemFn =
  621    fn(AnyEntity, Entity<Project>, Option<&Pane>, &mut Window, &mut App) -> Box<dyn ItemHandle>;
  622
  623type BuildProjectItemForPathFn =
  624    fn(
  625        &Entity<Project>,
  626        &ProjectPath,
  627        Option<EncodingWrapper>,
  628        &mut Window,
  629        &mut App,
  630    ) -> Option<Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>>>;
  631
  632#[derive(Clone, Default)]
  633struct ProjectItemRegistry {
  634    build_project_item_fns_by_type: HashMap<TypeId, BuildProjectItemFn>,
  635    build_project_item_for_path_fns: Vec<BuildProjectItemForPathFn>,
  636}
  637
  638impl ProjectItemRegistry {
  639    fn register<T: ProjectItem>(&mut self) {
  640        self.build_project_item_fns_by_type.insert(
  641            TypeId::of::<T::Item>(),
  642            |item, project, pane, window, cx| {
  643                let item = item.downcast().unwrap();
  644                Box::new(cx.new(|cx| T::for_project_item(project, pane, item, window, cx)))
  645                    as Box<dyn ItemHandle>
  646            },
  647        );
  648        self.build_project_item_for_path_fns
  649            .push(|project, project_path, encoding, window, cx| {
  650                let project_path = project_path.clone();
  651                let EncodingWrapper(encoding) = encoding.unwrap_or_default();
  652
  653                project.update(cx, |project, _| {*project.encoding.lock().unwrap() = encoding});
  654
  655                let is_file = project
  656                    .read(cx)
  657                    .entry_for_path(&project_path, cx)
  658                    .is_some_and(|entry| entry.is_file());
  659                let entry_abs_path = project.read(cx).absolute_path(&project_path, cx);
  660                let is_local = project.read(cx).is_local();
  661                let project_item =
  662                    <T::Item as project::ProjectItem>::try_open(project, &project_path, cx)?;
  663                let project = project.clone();
  664                Some(window.spawn(cx, async move |cx| {
  665                    match project_item.await.with_context(|| {
  666                        format!(
  667                            "opening project path {:?}",
  668                            entry_abs_path.as_deref().unwrap_or(&project_path.path.as_std_path())
  669                        )
  670                    }) {
  671                        Ok(project_item) => {
  672                            let project_item = project_item;
  673                            let project_entry_id: Option<ProjectEntryId> =
  674                                project_item.read_with(cx, project::ProjectItem::entry_id)?;
  675                            let build_workspace_item = Box::new(
  676                                |pane: &mut Pane, window: &mut Window, cx: &mut Context<Pane>| {
  677                                    Box::new(cx.new(|cx| {
  678                                        T::for_project_item(
  679                                            project,
  680                                            Some(pane),
  681                                            project_item,
  682                                            window,
  683                                            cx,
  684                                        )
  685                                    })) as Box<dyn ItemHandle>
  686                                },
  687                            ) as Box<_>;
  688                            Ok((project_entry_id, build_workspace_item))
  689                        }
  690                        Err(e) => {
  691                            if e.error_code() == ErrorCode::Internal {
  692                                if let Some(abs_path) =
  693                                    entry_abs_path.as_deref().filter(|_| is_file)
  694                                {
  695                                    if let Some(broken_project_item_view) =
  696                                        cx.update(|window, cx| {
  697                                            T::for_broken_project_item(
  698                                                abs_path, is_local, &e, window, cx,
  699                                            )
  700                                        })?
  701                                    {
  702                                        let build_workspace_item = Box::new(
  703                                            move |_: &mut Pane, _: &mut Window, cx: &mut Context<Pane>| {
  704                                                cx.new(|_| broken_project_item_view).boxed_clone()
  705                                            },
  706                                        )
  707                                        as Box<_>;
  708                                        return Ok((None, build_workspace_item));
  709                                    }
  710                                }
  711                            }
  712                            Err(e)
  713                        }
  714                    }
  715                }))
  716            });
  717    }
  718
  719    fn open_path(
  720        &self,
  721        project: &Entity<Project>,
  722        path: &ProjectPath,
  723        encoding: Option<EncodingWrapper>,
  724        window: &mut Window,
  725        cx: &mut App,
  726    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
  727        let Some(open_project_item) =
  728            self.build_project_item_for_path_fns
  729                .iter()
  730                .rev()
  731                .find_map(|open_project_item| {
  732                    open_project_item(project, path, encoding.clone(), window, cx)
  733                })
  734        else {
  735            return Task::ready(Err(anyhow!("cannot open file {:?}", path.path)));
  736        };
  737        open_project_item
  738    }
  739
  740    fn build_item<T: project::ProjectItem>(
  741        &self,
  742        item: Entity<T>,
  743        project: Entity<Project>,
  744        pane: Option<&Pane>,
  745        window: &mut Window,
  746        cx: &mut App,
  747    ) -> Option<Box<dyn ItemHandle>> {
  748        let build = self
  749            .build_project_item_fns_by_type
  750            .get(&TypeId::of::<T>())?;
  751        Some(build(item.into_any(), project, pane, window, cx))
  752    }
  753}
  754
  755type WorkspaceItemBuilder =
  756    Box<dyn FnOnce(&mut Pane, &mut Window, &mut Context<Pane>) -> Box<dyn ItemHandle>>;
  757
  758impl Global for ProjectItemRegistry {}
  759
  760/// Registers a [ProjectItem] for the app. When opening a file, all the registered
  761/// items will get a chance to open the file, starting from the project item that
  762/// was added last.
  763pub fn register_project_item<I: ProjectItem>(cx: &mut App) {
  764    cx.default_global::<ProjectItemRegistry>().register::<I>();
  765}
  766
  767#[derive(Default)]
  768pub struct FollowableViewRegistry(HashMap<TypeId, FollowableViewDescriptor>);
  769
  770struct FollowableViewDescriptor {
  771    from_state_proto: fn(
  772        Entity<Workspace>,
  773        ViewId,
  774        &mut Option<proto::view::Variant>,
  775        &mut Window,
  776        &mut App,
  777    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>>,
  778    to_followable_view: fn(&AnyView) -> Box<dyn FollowableItemHandle>,
  779}
  780
  781impl Global for FollowableViewRegistry {}
  782
  783impl FollowableViewRegistry {
  784    pub fn register<I: FollowableItem>(cx: &mut App) {
  785        cx.default_global::<Self>().0.insert(
  786            TypeId::of::<I>(),
  787            FollowableViewDescriptor {
  788                from_state_proto: |workspace, id, state, window, cx| {
  789                    I::from_state_proto(workspace, id, state, window, cx).map(|task| {
  790                        cx.foreground_executor()
  791                            .spawn(async move { Ok(Box::new(task.await?) as Box<_>) })
  792                    })
  793                },
  794                to_followable_view: |view| Box::new(view.clone().downcast::<I>().unwrap()),
  795            },
  796        );
  797    }
  798
  799    pub fn from_state_proto(
  800        workspace: Entity<Workspace>,
  801        view_id: ViewId,
  802        mut state: Option<proto::view::Variant>,
  803        window: &mut Window,
  804        cx: &mut App,
  805    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>> {
  806        cx.update_default_global(|this: &mut Self, cx| {
  807            this.0.values().find_map(|descriptor| {
  808                (descriptor.from_state_proto)(workspace.clone(), view_id, &mut state, window, cx)
  809            })
  810        })
  811    }
  812
  813    pub fn to_followable_view(
  814        view: impl Into<AnyView>,
  815        cx: &App,
  816    ) -> Option<Box<dyn FollowableItemHandle>> {
  817        let this = cx.try_global::<Self>()?;
  818        let view = view.into();
  819        let descriptor = this.0.get(&view.entity_type())?;
  820        Some((descriptor.to_followable_view)(&view))
  821    }
  822}
  823
  824#[derive(Copy, Clone)]
  825struct SerializableItemDescriptor {
  826    deserialize: fn(
  827        Entity<Project>,
  828        WeakEntity<Workspace>,
  829        WorkspaceId,
  830        ItemId,
  831        &mut Window,
  832        &mut Context<Pane>,
  833    ) -> Task<Result<Box<dyn ItemHandle>>>,
  834    cleanup: fn(WorkspaceId, Vec<ItemId>, &mut Window, &mut App) -> Task<Result<()>>,
  835    view_to_serializable_item: fn(AnyView) -> Box<dyn SerializableItemHandle>,
  836}
  837
  838#[derive(Default)]
  839struct SerializableItemRegistry {
  840    descriptors_by_kind: HashMap<Arc<str>, SerializableItemDescriptor>,
  841    descriptors_by_type: HashMap<TypeId, SerializableItemDescriptor>,
  842}
  843
  844impl Global for SerializableItemRegistry {}
  845
  846impl SerializableItemRegistry {
  847    fn deserialize(
  848        item_kind: &str,
  849        project: Entity<Project>,
  850        workspace: WeakEntity<Workspace>,
  851        workspace_id: WorkspaceId,
  852        item_item: ItemId,
  853        window: &mut Window,
  854        cx: &mut Context<Pane>,
  855    ) -> Task<Result<Box<dyn ItemHandle>>> {
  856        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  857            return Task::ready(Err(anyhow!(
  858                "cannot deserialize {}, descriptor not found",
  859                item_kind
  860            )));
  861        };
  862
  863        (descriptor.deserialize)(project, workspace, workspace_id, item_item, window, cx)
  864    }
  865
  866    fn cleanup(
  867        item_kind: &str,
  868        workspace_id: WorkspaceId,
  869        loaded_items: Vec<ItemId>,
  870        window: &mut Window,
  871        cx: &mut App,
  872    ) -> Task<Result<()>> {
  873        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  874            return Task::ready(Err(anyhow!(
  875                "cannot cleanup {}, descriptor not found",
  876                item_kind
  877            )));
  878        };
  879
  880        (descriptor.cleanup)(workspace_id, loaded_items, window, cx)
  881    }
  882
  883    fn view_to_serializable_item_handle(
  884        view: AnyView,
  885        cx: &App,
  886    ) -> Option<Box<dyn SerializableItemHandle>> {
  887        let this = cx.try_global::<Self>()?;
  888        let descriptor = this.descriptors_by_type.get(&view.entity_type())?;
  889        Some((descriptor.view_to_serializable_item)(view))
  890    }
  891
  892    fn descriptor(item_kind: &str, cx: &App) -> Option<SerializableItemDescriptor> {
  893        let this = cx.try_global::<Self>()?;
  894        this.descriptors_by_kind.get(item_kind).copied()
  895    }
  896}
  897
  898pub fn register_serializable_item<I: SerializableItem>(cx: &mut App) {
  899    let serialized_item_kind = I::serialized_item_kind();
  900
  901    let registry = cx.default_global::<SerializableItemRegistry>();
  902    let descriptor = SerializableItemDescriptor {
  903        deserialize: |project, workspace, workspace_id, item_id, window, cx| {
  904            let task = I::deserialize(project, workspace, workspace_id, item_id, window, cx);
  905            cx.foreground_executor()
  906                .spawn(async { Ok(Box::new(task.await?) as Box<_>) })
  907        },
  908        cleanup: |workspace_id, loaded_items, window, cx| {
  909            I::cleanup(workspace_id, loaded_items, window, cx)
  910        },
  911        view_to_serializable_item: |view| Box::new(view.downcast::<I>().unwrap()),
  912    };
  913    registry
  914        .descriptors_by_kind
  915        .insert(Arc::from(serialized_item_kind), descriptor);
  916    registry
  917        .descriptors_by_type
  918        .insert(TypeId::of::<I>(), descriptor);
  919}
  920
  921pub struct AppState {
  922    pub languages: Arc<LanguageRegistry>,
  923    pub client: Arc<Client>,
  924    pub user_store: Entity<UserStore>,
  925    pub workspace_store: Entity<WorkspaceStore>,
  926    pub fs: Arc<dyn fs::Fs>,
  927    pub build_window_options: fn(Option<Uuid>, &mut App) -> WindowOptions,
  928    pub node_runtime: NodeRuntime,
  929    pub session: Entity<AppSession>,
  930}
  931
  932struct GlobalAppState(Weak<AppState>);
  933
  934impl Global for GlobalAppState {}
  935
  936pub struct WorkspaceStore {
  937    workspaces: HashSet<WindowHandle<Workspace>>,
  938    client: Arc<Client>,
  939    _subscriptions: Vec<client::Subscription>,
  940}
  941
  942#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq, PartialOrd, Ord)]
  943pub enum CollaboratorId {
  944    PeerId(PeerId),
  945    Agent,
  946}
  947
  948impl From<PeerId> for CollaboratorId {
  949    fn from(peer_id: PeerId) -> Self {
  950        CollaboratorId::PeerId(peer_id)
  951    }
  952}
  953
  954impl From<&PeerId> for CollaboratorId {
  955    fn from(peer_id: &PeerId) -> Self {
  956        CollaboratorId::PeerId(*peer_id)
  957    }
  958}
  959
  960#[derive(PartialEq, Eq, PartialOrd, Ord, Debug)]
  961struct Follower {
  962    project_id: Option<u64>,
  963    peer_id: PeerId,
  964}
  965
  966impl AppState {
  967    #[track_caller]
  968    pub fn global(cx: &App) -> Weak<Self> {
  969        cx.global::<GlobalAppState>().0.clone()
  970    }
  971    pub fn try_global(cx: &App) -> Option<Weak<Self>> {
  972        cx.try_global::<GlobalAppState>()
  973            .map(|state| state.0.clone())
  974    }
  975    pub fn set_global(state: Weak<AppState>, cx: &mut App) {
  976        cx.set_global(GlobalAppState(state));
  977    }
  978
  979    #[cfg(any(test, feature = "test-support"))]
  980    pub fn test(cx: &mut App) -> Arc<Self> {
  981        use node_runtime::NodeRuntime;
  982        use session::Session;
  983        use settings::SettingsStore;
  984
  985        if !cx.has_global::<SettingsStore>() {
  986            let settings_store = SettingsStore::test(cx);
  987            cx.set_global(settings_store);
  988        }
  989
  990        let fs = fs::FakeFs::new(cx.background_executor().clone());
  991        let languages = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));
  992        let clock = Arc::new(clock::FakeSystemClock::new());
  993        let http_client = http_client::FakeHttpClient::with_404_response();
  994        let client = Client::new(clock, http_client, cx);
  995        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
  996        let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
  997        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
  998
  999        theme::init(theme::LoadThemes::JustBase, cx);
 1000        client::init(&client, cx);
 1001        crate::init_settings(cx);
 1002
 1003        Arc::new(Self {
 1004            client,
 1005            fs,
 1006            languages,
 1007            user_store,
 1008            workspace_store,
 1009            node_runtime: NodeRuntime::unavailable(),
 1010            build_window_options: |_, _| Default::default(),
 1011            session,
 1012        })
 1013    }
 1014}
 1015
 1016struct DelayedDebouncedEditAction {
 1017    task: Option<Task<()>>,
 1018    cancel_channel: Option<oneshot::Sender<()>>,
 1019}
 1020
 1021impl DelayedDebouncedEditAction {
 1022    fn new() -> DelayedDebouncedEditAction {
 1023        DelayedDebouncedEditAction {
 1024            task: None,
 1025            cancel_channel: None,
 1026        }
 1027    }
 1028
 1029    fn fire_new<F>(
 1030        &mut self,
 1031        delay: Duration,
 1032        window: &mut Window,
 1033        cx: &mut Context<Workspace>,
 1034        func: F,
 1035    ) where
 1036        F: 'static
 1037            + Send
 1038            + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> Task<Result<()>>,
 1039    {
 1040        if let Some(channel) = self.cancel_channel.take() {
 1041            _ = channel.send(());
 1042        }
 1043
 1044        let (sender, mut receiver) = oneshot::channel::<()>();
 1045        self.cancel_channel = Some(sender);
 1046
 1047        let previous_task = self.task.take();
 1048        self.task = Some(cx.spawn_in(window, async move |workspace, cx| {
 1049            let mut timer = cx.background_executor().timer(delay).fuse();
 1050            if let Some(previous_task) = previous_task {
 1051                previous_task.await;
 1052            }
 1053
 1054            futures::select_biased! {
 1055                _ = receiver => return,
 1056                    _ = timer => {}
 1057            }
 1058
 1059            if let Some(result) = workspace
 1060                .update_in(cx, |workspace, window, cx| (func)(workspace, window, cx))
 1061                .log_err()
 1062            {
 1063                result.await.log_err();
 1064            }
 1065        }));
 1066    }
 1067}
 1068
 1069pub enum Event {
 1070    PaneAdded(Entity<Pane>),
 1071    PaneRemoved,
 1072    ItemAdded {
 1073        item: Box<dyn ItemHandle>,
 1074    },
 1075    ActiveItemChanged,
 1076    ItemRemoved {
 1077        item_id: EntityId,
 1078    },
 1079    UserSavedItem {
 1080        pane: WeakEntity<Pane>,
 1081        item: Box<dyn WeakItemHandle>,
 1082        save_intent: SaveIntent,
 1083    },
 1084    ContactRequestedJoin(u64),
 1085    WorkspaceCreated(WeakEntity<Workspace>),
 1086    OpenBundledFile {
 1087        text: Cow<'static, str>,
 1088        title: &'static str,
 1089        language: &'static str,
 1090    },
 1091    ZoomChanged,
 1092    ModalOpened,
 1093}
 1094
 1095#[derive(Debug)]
 1096pub enum OpenVisible {
 1097    All,
 1098    None,
 1099    OnlyFiles,
 1100    OnlyDirectories,
 1101}
 1102
 1103enum WorkspaceLocation {
 1104    // Valid local paths or SSH project to serialize
 1105    Location(SerializedWorkspaceLocation, PathList),
 1106    // No valid location found hence clear session id
 1107    DetachFromSession,
 1108    // No valid location found to serialize
 1109    None,
 1110}
 1111
 1112type PromptForNewPath = Box<
 1113    dyn Fn(
 1114        &mut Workspace,
 1115        DirectoryLister,
 1116        &mut Window,
 1117        &mut Context<Workspace>,
 1118    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1119>;
 1120
 1121type PromptForOpenPath = Box<
 1122    dyn Fn(
 1123        &mut Workspace,
 1124        DirectoryLister,
 1125        &mut Window,
 1126        &mut Context<Workspace>,
 1127    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1128>;
 1129
 1130#[derive(Default)]
 1131struct DispatchingKeystrokes {
 1132    dispatched: HashSet<Vec<Keystroke>>,
 1133    queue: VecDeque<Keystroke>,
 1134    task: Option<Shared<Task<()>>>,
 1135}
 1136
 1137/// Collects everything project-related for a certain window opened.
 1138/// In some way, is a counterpart of a window, as the [`WindowHandle`] could be downcast into `Workspace`.
 1139///
 1140/// A `Workspace` usually consists of 1 or more projects, a central pane group, 3 docks and a status bar.
 1141/// The `Workspace` owns everybody's state and serves as a default, "global context",
 1142/// that can be used to register a global action to be triggered from any place in the window.
 1143pub struct Workspace {
 1144    weak_self: WeakEntity<Self>,
 1145    workspace_actions: Vec<Box<dyn Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div>>,
 1146    zoomed: Option<AnyWeakView>,
 1147    previous_dock_drag_coordinates: Option<Point<Pixels>>,
 1148    zoomed_position: Option<DockPosition>,
 1149    center: PaneGroup,
 1150    left_dock: Entity<Dock>,
 1151    bottom_dock: Entity<Dock>,
 1152    right_dock: Entity<Dock>,
 1153    panes: Vec<Entity<Pane>>,
 1154    panes_by_item: HashMap<EntityId, WeakEntity<Pane>>,
 1155    active_pane: Entity<Pane>,
 1156    last_active_center_pane: Option<WeakEntity<Pane>>,
 1157    last_active_view_id: Option<proto::ViewId>,
 1158    status_bar: Entity<StatusBar>,
 1159    modal_layer: Entity<ModalLayer>,
 1160    toast_layer: Entity<ToastLayer>,
 1161    titlebar_item: Option<AnyView>,
 1162    notifications: Notifications,
 1163    suppressed_notifications: HashSet<NotificationId>,
 1164    project: Entity<Project>,
 1165    follower_states: HashMap<CollaboratorId, FollowerState>,
 1166    last_leaders_by_pane: HashMap<WeakEntity<Pane>, CollaboratorId>,
 1167    window_edited: bool,
 1168    last_window_title: Option<String>,
 1169    dirty_items: HashMap<EntityId, Subscription>,
 1170    active_call: Option<(Entity<ActiveCall>, Vec<Subscription>)>,
 1171    leader_updates_tx: mpsc::UnboundedSender<(PeerId, proto::UpdateFollowers)>,
 1172    database_id: Option<WorkspaceId>,
 1173    app_state: Arc<AppState>,
 1174    dispatching_keystrokes: Rc<RefCell<DispatchingKeystrokes>>,
 1175    _subscriptions: Vec<Subscription>,
 1176    _apply_leader_updates: Task<Result<()>>,
 1177    _observe_current_user: Task<Result<()>>,
 1178    _schedule_serialize_workspace: Option<Task<()>>,
 1179    _schedule_serialize_ssh_paths: Option<Task<()>>,
 1180    pane_history_timestamp: Arc<AtomicUsize>,
 1181    bounds: Bounds<Pixels>,
 1182    pub centered_layout: bool,
 1183    bounds_save_task_queued: Option<Task<()>>,
 1184    on_prompt_for_new_path: Option<PromptForNewPath>,
 1185    on_prompt_for_open_path: Option<PromptForOpenPath>,
 1186    terminal_provider: Option<Box<dyn TerminalProvider>>,
 1187    debugger_provider: Option<Arc<dyn DebuggerProvider>>,
 1188    serializable_items_tx: UnboundedSender<Box<dyn SerializableItemHandle>>,
 1189    _items_serializer: Task<Result<()>>,
 1190    session_id: Option<String>,
 1191    scheduled_tasks: Vec<Task<()>>,
 1192    last_open_dock_positions: Vec<DockPosition>,
 1193    pub encoding: Arc<std::sync::Mutex<&'static Encoding>>,
 1194}
 1195
 1196impl EventEmitter<Event> for Workspace {}
 1197
 1198#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
 1199pub struct ViewId {
 1200    pub creator: CollaboratorId,
 1201    pub id: u64,
 1202}
 1203
 1204pub struct FollowerState {
 1205    center_pane: Entity<Pane>,
 1206    dock_pane: Option<Entity<Pane>>,
 1207    active_view_id: Option<ViewId>,
 1208    items_by_leader_view_id: HashMap<ViewId, FollowerView>,
 1209}
 1210
 1211struct FollowerView {
 1212    view: Box<dyn FollowableItemHandle>,
 1213    location: Option<proto::PanelId>,
 1214}
 1215
 1216impl Workspace {
 1217    pub fn new(
 1218        workspace_id: Option<WorkspaceId>,
 1219        project: Entity<Project>,
 1220        app_state: Arc<AppState>,
 1221        window: &mut Window,
 1222        cx: &mut Context<Self>,
 1223    ) -> Self {
 1224        cx.subscribe_in(&project, window, move |this, _, event, window, cx| {
 1225            match event {
 1226                project::Event::RemoteIdChanged(_) => {
 1227                    this.update_window_title(window, cx);
 1228                }
 1229
 1230                project::Event::CollaboratorLeft(peer_id) => {
 1231                    this.collaborator_left(*peer_id, window, cx);
 1232                }
 1233
 1234                project::Event::WorktreeRemoved(_) | project::Event::WorktreeAdded(_) => {
 1235                    this.update_window_title(window, cx);
 1236                    this.serialize_workspace(window, cx);
 1237                    // This event could be triggered by `AddFolderToProject` or `RemoveFromProject`.
 1238                    this.update_history(cx);
 1239                }
 1240
 1241                project::Event::DisconnectedFromHost => {
 1242                    this.update_window_edited(window, cx);
 1243                    let leaders_to_unfollow =
 1244                        this.follower_states.keys().copied().collect::<Vec<_>>();
 1245                    for leader_id in leaders_to_unfollow {
 1246                        this.unfollow(leader_id, window, cx);
 1247                    }
 1248                }
 1249
 1250                project::Event::DisconnectedFromSshRemote => {
 1251                    this.update_window_edited(window, cx);
 1252                }
 1253
 1254                project::Event::Closed => {
 1255                    window.remove_window();
 1256                }
 1257
 1258                project::Event::DeletedEntry(_, entry_id) => {
 1259                    for pane in this.panes.iter() {
 1260                        pane.update(cx, |pane, cx| {
 1261                            pane.handle_deleted_project_item(*entry_id, window, cx)
 1262                        });
 1263                    }
 1264                }
 1265
 1266                project::Event::Toast {
 1267                    notification_id,
 1268                    message,
 1269                } => this.show_notification(
 1270                    NotificationId::named(notification_id.clone()),
 1271                    cx,
 1272                    |cx| cx.new(|cx| MessageNotification::new(message.clone(), cx)),
 1273                ),
 1274
 1275                project::Event::HideToast { notification_id } => {
 1276                    this.dismiss_notification(&NotificationId::named(notification_id.clone()), cx)
 1277                }
 1278
 1279                project::Event::LanguageServerPrompt(request) => {
 1280                    struct LanguageServerPrompt;
 1281
 1282                    let mut hasher = DefaultHasher::new();
 1283                    request.lsp_name.as_str().hash(&mut hasher);
 1284                    let id = hasher.finish();
 1285
 1286                    this.show_notification(
 1287                        NotificationId::composite::<LanguageServerPrompt>(id as usize),
 1288                        cx,
 1289                        |cx| {
 1290                            cx.new(|cx| {
 1291                                notifications::LanguageServerPrompt::new(request.clone(), cx)
 1292                            })
 1293                        },
 1294                    );
 1295                }
 1296
 1297                project::Event::AgentLocationChanged => {
 1298                    this.handle_agent_location_changed(window, cx)
 1299                }
 1300
 1301                _ => {}
 1302            }
 1303            cx.notify()
 1304        })
 1305        .detach();
 1306
 1307        cx.subscribe_in(
 1308            &project.read(cx).breakpoint_store(),
 1309            window,
 1310            |workspace, _, event, window, cx| match event {
 1311                BreakpointStoreEvent::BreakpointsUpdated(_, _)
 1312                | BreakpointStoreEvent::BreakpointsCleared(_) => {
 1313                    workspace.serialize_workspace(window, cx);
 1314                }
 1315                BreakpointStoreEvent::SetDebugLine | BreakpointStoreEvent::ClearDebugLines => {}
 1316            },
 1317        )
 1318        .detach();
 1319        if let Some(toolchain_store) = project.read(cx).toolchain_store() {
 1320            cx.subscribe_in(
 1321                &toolchain_store,
 1322                window,
 1323                |workspace, _, event, window, cx| match event {
 1324                    ToolchainStoreEvent::CustomToolchainsModified => {
 1325                        workspace.serialize_workspace(window, cx);
 1326                    }
 1327                    _ => {}
 1328                },
 1329            )
 1330            .detach();
 1331        }
 1332
 1333        cx.on_focus_lost(window, |this, window, cx| {
 1334            let focus_handle = this.focus_handle(cx);
 1335            window.focus(&focus_handle);
 1336        })
 1337        .detach();
 1338
 1339        let weak_handle = cx.entity().downgrade();
 1340        let pane_history_timestamp = Arc::new(AtomicUsize::new(0));
 1341
 1342        let center_pane = cx.new(|cx| {
 1343            let mut center_pane = Pane::new(
 1344                weak_handle.clone(),
 1345                project.clone(),
 1346                pane_history_timestamp.clone(),
 1347                None,
 1348                NewFile.boxed_clone(),
 1349                true,
 1350                window,
 1351                cx,
 1352            );
 1353            center_pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 1354            center_pane
 1355        });
 1356        cx.subscribe_in(&center_pane, window, Self::handle_pane_event)
 1357            .detach();
 1358
 1359        window.focus(&center_pane.focus_handle(cx));
 1360
 1361        cx.emit(Event::PaneAdded(center_pane.clone()));
 1362
 1363        let window_handle = window.window_handle().downcast::<Workspace>().unwrap();
 1364        app_state.workspace_store.update(cx, |store, _| {
 1365            store.workspaces.insert(window_handle);
 1366        });
 1367
 1368        let mut current_user = app_state.user_store.read(cx).watch_current_user();
 1369        let mut connection_status = app_state.client.status();
 1370        let _observe_current_user = cx.spawn_in(window, async move |this, cx| {
 1371            current_user.next().await;
 1372            connection_status.next().await;
 1373            let mut stream =
 1374                Stream::map(current_user, drop).merge(Stream::map(connection_status, drop));
 1375
 1376            while stream.recv().await.is_some() {
 1377                this.update(cx, |_, cx| cx.notify())?;
 1378            }
 1379            anyhow::Ok(())
 1380        });
 1381
 1382        // All leader updates are enqueued and then processed in a single task, so
 1383        // that each asynchronous operation can be run in order.
 1384        let (leader_updates_tx, mut leader_updates_rx) =
 1385            mpsc::unbounded::<(PeerId, proto::UpdateFollowers)>();
 1386        let _apply_leader_updates = cx.spawn_in(window, async move |this, cx| {
 1387            while let Some((leader_id, update)) = leader_updates_rx.next().await {
 1388                Self::process_leader_update(&this, leader_id, update, cx)
 1389                    .await
 1390                    .log_err();
 1391            }
 1392
 1393            Ok(())
 1394        });
 1395
 1396        cx.emit(Event::WorkspaceCreated(weak_handle.clone()));
 1397        let modal_layer = cx.new(|_| ModalLayer::new());
 1398        let toast_layer = cx.new(|_| ToastLayer::new());
 1399        cx.subscribe(
 1400            &modal_layer,
 1401            |_, _, _: &modal_layer::ModalOpenedEvent, cx| {
 1402                cx.emit(Event::ModalOpened);
 1403            },
 1404        )
 1405        .detach();
 1406
 1407        let left_dock = Dock::new(DockPosition::Left, modal_layer.clone(), window, cx);
 1408        let bottom_dock = Dock::new(DockPosition::Bottom, modal_layer.clone(), window, cx);
 1409        let right_dock = Dock::new(DockPosition::Right, modal_layer.clone(), window, cx);
 1410        let left_dock_buttons = cx.new(|cx| PanelButtons::new(left_dock.clone(), cx));
 1411        let bottom_dock_buttons = cx.new(|cx| PanelButtons::new(bottom_dock.clone(), cx));
 1412        let right_dock_buttons = cx.new(|cx| PanelButtons::new(right_dock.clone(), cx));
 1413        let status_bar = cx.new(|cx| {
 1414            let mut status_bar = StatusBar::new(&center_pane.clone(), window, cx);
 1415            status_bar.add_left_item(left_dock_buttons, window, cx);
 1416            status_bar.add_right_item(right_dock_buttons, window, cx);
 1417            status_bar.add_right_item(bottom_dock_buttons, window, cx);
 1418            status_bar
 1419        });
 1420
 1421        let session_id = app_state.session.read(cx).id().to_owned();
 1422
 1423        let mut active_call = None;
 1424        if let Some(call) = ActiveCall::try_global(cx) {
 1425            let subscriptions = vec![cx.subscribe_in(&call, window, Self::on_active_call_event)];
 1426            active_call = Some((call, subscriptions));
 1427        }
 1428
 1429        let (serializable_items_tx, serializable_items_rx) =
 1430            mpsc::unbounded::<Box<dyn SerializableItemHandle>>();
 1431        let _items_serializer = cx.spawn_in(window, async move |this, cx| {
 1432            Self::serialize_items(&this, serializable_items_rx, cx).await
 1433        });
 1434
 1435        let subscriptions = vec![
 1436            cx.observe_window_activation(window, Self::on_window_activation_changed),
 1437            cx.observe_window_bounds(window, move |this, window, cx| {
 1438                if this.bounds_save_task_queued.is_some() {
 1439                    return;
 1440                }
 1441                this.bounds_save_task_queued = Some(cx.spawn_in(window, async move |this, cx| {
 1442                    cx.background_executor()
 1443                        .timer(Duration::from_millis(100))
 1444                        .await;
 1445                    this.update_in(cx, |this, window, cx| {
 1446                        if let Some(display) = window.display(cx)
 1447                            && let Ok(display_uuid) = display.uuid()
 1448                        {
 1449                            let window_bounds = window.inner_window_bounds();
 1450                            if let Some(database_id) = workspace_id {
 1451                                cx.background_executor()
 1452                                    .spawn(DB.set_window_open_status(
 1453                                        database_id,
 1454                                        SerializedWindowBounds(window_bounds),
 1455                                        display_uuid,
 1456                                    ))
 1457                                    .detach_and_log_err(cx);
 1458                            }
 1459                        }
 1460                        this.bounds_save_task_queued.take();
 1461                    })
 1462                    .ok();
 1463                }));
 1464                cx.notify();
 1465            }),
 1466            cx.observe_window_appearance(window, |_, window, cx| {
 1467                let window_appearance = window.appearance();
 1468
 1469                *SystemAppearance::global_mut(cx) = SystemAppearance(window_appearance.into());
 1470
 1471                GlobalTheme::reload_theme(cx);
 1472                GlobalTheme::reload_icon_theme(cx);
 1473            }),
 1474            cx.on_release(move |this, cx| {
 1475                this.app_state.workspace_store.update(cx, move |store, _| {
 1476                    store.workspaces.remove(&window_handle);
 1477                })
 1478            }),
 1479        ];
 1480
 1481        cx.defer_in(window, |this, window, cx| {
 1482            this.update_window_title(window, cx);
 1483            this.show_initial_notifications(cx);
 1484        });
 1485        Workspace {
 1486            weak_self: weak_handle.clone(),
 1487            zoomed: None,
 1488            zoomed_position: None,
 1489            previous_dock_drag_coordinates: None,
 1490            center: PaneGroup::new(center_pane.clone()),
 1491            panes: vec![center_pane.clone()],
 1492            panes_by_item: Default::default(),
 1493            active_pane: center_pane.clone(),
 1494            last_active_center_pane: Some(center_pane.downgrade()),
 1495            last_active_view_id: None,
 1496            status_bar,
 1497            modal_layer,
 1498            toast_layer,
 1499            titlebar_item: None,
 1500            notifications: Notifications::default(),
 1501            suppressed_notifications: HashSet::default(),
 1502            left_dock,
 1503            bottom_dock,
 1504            right_dock,
 1505            project: project.clone(),
 1506            follower_states: Default::default(),
 1507            last_leaders_by_pane: Default::default(),
 1508            dispatching_keystrokes: Default::default(),
 1509            window_edited: false,
 1510            last_window_title: None,
 1511            dirty_items: Default::default(),
 1512            active_call,
 1513            database_id: workspace_id,
 1514            app_state,
 1515            _observe_current_user,
 1516            _apply_leader_updates,
 1517            _schedule_serialize_workspace: None,
 1518            _schedule_serialize_ssh_paths: None,
 1519            leader_updates_tx,
 1520            _subscriptions: subscriptions,
 1521            pane_history_timestamp,
 1522            workspace_actions: Default::default(),
 1523            // This data will be incorrect, but it will be overwritten by the time it needs to be used.
 1524            bounds: Default::default(),
 1525            centered_layout: false,
 1526            bounds_save_task_queued: None,
 1527            on_prompt_for_new_path: None,
 1528            on_prompt_for_open_path: None,
 1529            terminal_provider: None,
 1530            debugger_provider: None,
 1531            serializable_items_tx,
 1532            _items_serializer,
 1533            session_id: Some(session_id),
 1534            scheduled_tasks: Vec::new(),
 1535            last_open_dock_positions: Vec::new(),
 1536            encoding: Arc::new(std::sync::Mutex::new(encoding_rs::UTF_8)),
 1537        }
 1538    }
 1539
 1540    pub fn new_local(
 1541        abs_paths: Vec<PathBuf>,
 1542        app_state: Arc<AppState>,
 1543        requesting_window: Option<WindowHandle<Workspace>>,
 1544        env: Option<HashMap<String, String>>,
 1545        cx: &mut App,
 1546    ) -> Task<
 1547        anyhow::Result<(
 1548            WindowHandle<Workspace>,
 1549            Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 1550        )>,
 1551    > {
 1552        let project_handle = Project::local(
 1553            app_state.client.clone(),
 1554            app_state.node_runtime.clone(),
 1555            app_state.user_store.clone(),
 1556            app_state.languages.clone(),
 1557            app_state.fs.clone(),
 1558            env,
 1559            cx,
 1560        );
 1561
 1562        cx.spawn(async move |cx| {
 1563            let mut paths_to_open = Vec::with_capacity(abs_paths.len());
 1564            for path in abs_paths.into_iter() {
 1565                if let Some(canonical) = app_state.fs.canonicalize(&path).await.ok() {
 1566                    paths_to_open.push(canonical)
 1567                } else {
 1568                    paths_to_open.push(path)
 1569                }
 1570            }
 1571
 1572            let serialized_workspace =
 1573                persistence::DB.workspace_for_roots(paths_to_open.as_slice());
 1574
 1575            if let Some(paths) = serialized_workspace.as_ref().map(|ws| &ws.paths) {
 1576                paths_to_open = paths.ordered_paths().cloned().collect();
 1577                if !paths.is_lexicographically_ordered() {
 1578                    project_handle
 1579                        .update(cx, |project, cx| {
 1580                            project.set_worktrees_reordered(true, cx);
 1581                        })
 1582                        .log_err();
 1583                }
 1584            }
 1585
 1586            // Get project paths for all of the abs_paths
 1587            let mut project_paths: Vec<(PathBuf, Option<ProjectPath>)> =
 1588                Vec::with_capacity(paths_to_open.len());
 1589
 1590            for path in paths_to_open.into_iter() {
 1591                if let Some((_, project_entry)) = cx
 1592                    .update(|cx| {
 1593                        Workspace::project_path_for_path(project_handle.clone(), &path, true, cx)
 1594                    })?
 1595                    .await
 1596                    .log_err()
 1597                {
 1598                    project_paths.push((path, Some(project_entry)));
 1599                } else {
 1600                    project_paths.push((path, None));
 1601                }
 1602            }
 1603
 1604            let workspace_id = if let Some(serialized_workspace) = serialized_workspace.as_ref() {
 1605                serialized_workspace.id
 1606            } else {
 1607                DB.next_id().await.unwrap_or_else(|_| Default::default())
 1608            };
 1609
 1610            let toolchains = DB.toolchains(workspace_id).await?;
 1611
 1612            for (toolchain, worktree_id, path) in toolchains {
 1613                let toolchain_path = PathBuf::from(toolchain.path.clone().to_string());
 1614                if !app_state.fs.is_file(toolchain_path.as_path()).await {
 1615                    continue;
 1616                }
 1617
 1618                project_handle
 1619                    .update(cx, |this, cx| {
 1620                        this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 1621                    })?
 1622                    .await;
 1623            }
 1624            if let Some(workspace) = serialized_workspace.as_ref() {
 1625                project_handle.update(cx, |this, cx| {
 1626                    for (scope, toolchains) in &workspace.user_toolchains {
 1627                        for toolchain in toolchains {
 1628                            this.add_toolchain(toolchain.clone(), scope.clone(), cx);
 1629                        }
 1630                    }
 1631                })?;
 1632            }
 1633
 1634            let window = if let Some(window) = requesting_window {
 1635                let centered_layout = serialized_workspace
 1636                    .as_ref()
 1637                    .map(|w| w.centered_layout)
 1638                    .unwrap_or(false);
 1639
 1640                cx.update_window(window.into(), |_, window, cx| {
 1641                    window.replace_root(cx, |window, cx| {
 1642                        let mut workspace = Workspace::new(
 1643                            Some(workspace_id),
 1644                            project_handle.clone(),
 1645                            app_state.clone(),
 1646                            window,
 1647                            cx,
 1648                        );
 1649
 1650                        workspace.centered_layout = centered_layout;
 1651                        workspace
 1652                    });
 1653                })?;
 1654                window
 1655            } else {
 1656                let window_bounds_override = window_bounds_env_override();
 1657
 1658                let (window_bounds, display) = if let Some(bounds) = window_bounds_override {
 1659                    (Some(WindowBounds::Windowed(bounds)), None)
 1660                } else {
 1661                    let restorable_bounds = serialized_workspace
 1662                        .as_ref()
 1663                        .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 1664                        .or_else(|| {
 1665                            let (display, window_bounds) = DB.last_window().log_err()?;
 1666                            Some((display?, window_bounds?))
 1667                        });
 1668
 1669                    if let Some((serialized_display, serialized_status)) = restorable_bounds {
 1670                        (Some(serialized_status.0), Some(serialized_display))
 1671                    } else {
 1672                        (None, None)
 1673                    }
 1674                };
 1675
 1676                // Use the serialized workspace to construct the new window
 1677                let mut options = cx.update(|cx| (app_state.build_window_options)(display, cx))?;
 1678                options.window_bounds = window_bounds;
 1679                let centered_layout = serialized_workspace
 1680                    .as_ref()
 1681                    .map(|w| w.centered_layout)
 1682                    .unwrap_or(false);
 1683                cx.open_window(options, {
 1684                    let app_state = app_state.clone();
 1685                    let project_handle = project_handle.clone();
 1686                    move |window, cx| {
 1687                        cx.new(|cx| {
 1688                            let mut workspace = Workspace::new(
 1689                                Some(workspace_id),
 1690                                project_handle,
 1691                                app_state,
 1692                                window,
 1693                                cx,
 1694                            );
 1695                            workspace.centered_layout = centered_layout;
 1696                            workspace
 1697                        })
 1698                    }
 1699                })?
 1700            };
 1701
 1702            notify_if_database_failed(window, cx);
 1703            let opened_items = window
 1704                .update(cx, |_workspace, window, cx| {
 1705                    open_items(serialized_workspace, project_paths, window, cx)
 1706                })?
 1707                .await
 1708                .unwrap_or_default();
 1709
 1710            window
 1711                .update(cx, |workspace, window, cx| {
 1712                    window.activate_window();
 1713                    workspace.update_history(cx);
 1714                })
 1715                .log_err();
 1716            Ok((window, opened_items))
 1717        })
 1718    }
 1719
 1720    pub fn weak_handle(&self) -> WeakEntity<Self> {
 1721        self.weak_self.clone()
 1722    }
 1723
 1724    pub fn left_dock(&self) -> &Entity<Dock> {
 1725        &self.left_dock
 1726    }
 1727
 1728    pub fn bottom_dock(&self) -> &Entity<Dock> {
 1729        &self.bottom_dock
 1730    }
 1731
 1732    pub fn set_bottom_dock_layout(
 1733        &mut self,
 1734        layout: BottomDockLayout,
 1735        window: &mut Window,
 1736        cx: &mut Context<Self>,
 1737    ) {
 1738        let fs = self.project().read(cx).fs();
 1739        settings::update_settings_file(fs.clone(), cx, move |content, _cx| {
 1740            content.workspace.bottom_dock_layout = Some(layout);
 1741        });
 1742
 1743        cx.notify();
 1744        self.serialize_workspace(window, cx);
 1745    }
 1746
 1747    pub fn right_dock(&self) -> &Entity<Dock> {
 1748        &self.right_dock
 1749    }
 1750
 1751    pub fn all_docks(&self) -> [&Entity<Dock>; 3] {
 1752        [&self.left_dock, &self.bottom_dock, &self.right_dock]
 1753    }
 1754
 1755    pub fn dock_at_position(&self, position: DockPosition) -> &Entity<Dock> {
 1756        match position {
 1757            DockPosition::Left => &self.left_dock,
 1758            DockPosition::Bottom => &self.bottom_dock,
 1759            DockPosition::Right => &self.right_dock,
 1760        }
 1761    }
 1762
 1763    pub fn is_edited(&self) -> bool {
 1764        self.window_edited
 1765    }
 1766
 1767    pub fn add_panel<T: Panel>(
 1768        &mut self,
 1769        panel: Entity<T>,
 1770        window: &mut Window,
 1771        cx: &mut Context<Self>,
 1772    ) {
 1773        let focus_handle = panel.panel_focus_handle(cx);
 1774        cx.on_focus_in(&focus_handle, window, Self::handle_panel_focused)
 1775            .detach();
 1776
 1777        let dock_position = panel.position(window, cx);
 1778        let dock = self.dock_at_position(dock_position);
 1779
 1780        dock.update(cx, |dock, cx| {
 1781            dock.add_panel(panel, self.weak_self.clone(), window, cx)
 1782        });
 1783    }
 1784
 1785    pub fn remove_panel<T: Panel>(
 1786        &mut self,
 1787        panel: &Entity<T>,
 1788        window: &mut Window,
 1789        cx: &mut Context<Self>,
 1790    ) {
 1791        for dock in [&self.left_dock, &self.bottom_dock, &self.right_dock] {
 1792            dock.update(cx, |dock, cx| {
 1793                dock.remove_panel(panel, window, cx);
 1794            })
 1795        }
 1796    }
 1797
 1798    pub fn status_bar(&self) -> &Entity<StatusBar> {
 1799        &self.status_bar
 1800    }
 1801
 1802    pub fn status_bar_visible(&self, cx: &App) -> bool {
 1803        StatusBarSettings::get_global(cx).show
 1804    }
 1805
 1806    pub fn app_state(&self) -> &Arc<AppState> {
 1807        &self.app_state
 1808    }
 1809
 1810    pub fn user_store(&self) -> &Entity<UserStore> {
 1811        &self.app_state.user_store
 1812    }
 1813
 1814    pub fn project(&self) -> &Entity<Project> {
 1815        &self.project
 1816    }
 1817
 1818    pub fn path_style(&self, cx: &App) -> PathStyle {
 1819        self.project.read(cx).path_style(cx)
 1820    }
 1821
 1822    pub fn recently_activated_items(&self, cx: &App) -> HashMap<EntityId, usize> {
 1823        let mut history: HashMap<EntityId, usize> = HashMap::default();
 1824
 1825        for pane_handle in &self.panes {
 1826            let pane = pane_handle.read(cx);
 1827
 1828            for entry in pane.activation_history() {
 1829                history.insert(
 1830                    entry.entity_id,
 1831                    history
 1832                        .get(&entry.entity_id)
 1833                        .cloned()
 1834                        .unwrap_or(0)
 1835                        .max(entry.timestamp),
 1836                );
 1837            }
 1838        }
 1839
 1840        history
 1841    }
 1842
 1843    pub fn recent_active_item_by_type<T: 'static>(&self, cx: &App) -> Option<Entity<T>> {
 1844        let mut recent_item: Option<Entity<T>> = None;
 1845        let mut recent_timestamp = 0;
 1846        for pane_handle in &self.panes {
 1847            let pane = pane_handle.read(cx);
 1848            let item_map: HashMap<EntityId, &Box<dyn ItemHandle>> =
 1849                pane.items().map(|item| (item.item_id(), item)).collect();
 1850            for entry in pane.activation_history() {
 1851                if entry.timestamp > recent_timestamp
 1852                    && let Some(&item) = item_map.get(&entry.entity_id)
 1853                    && let Some(typed_item) = item.act_as::<T>(cx)
 1854                {
 1855                    recent_timestamp = entry.timestamp;
 1856                    recent_item = Some(typed_item);
 1857                }
 1858            }
 1859        }
 1860        recent_item
 1861    }
 1862
 1863    pub fn recent_navigation_history_iter(
 1864        &self,
 1865        cx: &App,
 1866    ) -> impl Iterator<Item = (ProjectPath, Option<PathBuf>)> {
 1867        let mut abs_paths_opened: HashMap<PathBuf, HashSet<ProjectPath>> = HashMap::default();
 1868        let mut history: HashMap<ProjectPath, (Option<PathBuf>, usize)> = HashMap::default();
 1869
 1870        for pane in &self.panes {
 1871            let pane = pane.read(cx);
 1872
 1873            pane.nav_history()
 1874                .for_each_entry(cx, |entry, (project_path, fs_path)| {
 1875                    if let Some(fs_path) = &fs_path {
 1876                        abs_paths_opened
 1877                            .entry(fs_path.clone())
 1878                            .or_default()
 1879                            .insert(project_path.clone());
 1880                    }
 1881                    let timestamp = entry.timestamp;
 1882                    match history.entry(project_path) {
 1883                        hash_map::Entry::Occupied(mut entry) => {
 1884                            let (_, old_timestamp) = entry.get();
 1885                            if &timestamp > old_timestamp {
 1886                                entry.insert((fs_path, timestamp));
 1887                            }
 1888                        }
 1889                        hash_map::Entry::Vacant(entry) => {
 1890                            entry.insert((fs_path, timestamp));
 1891                        }
 1892                    }
 1893                });
 1894
 1895            if let Some(item) = pane.active_item()
 1896                && let Some(project_path) = item.project_path(cx)
 1897            {
 1898                let fs_path = self.project.read(cx).absolute_path(&project_path, cx);
 1899
 1900                if let Some(fs_path) = &fs_path {
 1901                    abs_paths_opened
 1902                        .entry(fs_path.clone())
 1903                        .or_default()
 1904                        .insert(project_path.clone());
 1905                }
 1906
 1907                history.insert(project_path, (fs_path, std::usize::MAX));
 1908            }
 1909        }
 1910
 1911        history
 1912            .into_iter()
 1913            .sorted_by_key(|(_, (_, order))| *order)
 1914            .map(|(project_path, (fs_path, _))| (project_path, fs_path))
 1915            .rev()
 1916            .filter(move |(history_path, abs_path)| {
 1917                let latest_project_path_opened = abs_path
 1918                    .as_ref()
 1919                    .and_then(|abs_path| abs_paths_opened.get(abs_path))
 1920                    .and_then(|project_paths| {
 1921                        project_paths
 1922                            .iter()
 1923                            .max_by(|b1, b2| b1.worktree_id.cmp(&b2.worktree_id))
 1924                    });
 1925
 1926                latest_project_path_opened.is_none_or(|path| path == history_path)
 1927            })
 1928    }
 1929
 1930    pub fn recent_navigation_history(
 1931        &self,
 1932        limit: Option<usize>,
 1933        cx: &App,
 1934    ) -> Vec<(ProjectPath, Option<PathBuf>)> {
 1935        self.recent_navigation_history_iter(cx)
 1936            .take(limit.unwrap_or(usize::MAX))
 1937            .collect()
 1938    }
 1939
 1940    fn navigate_history(
 1941        &mut self,
 1942        pane: WeakEntity<Pane>,
 1943        mode: NavigationMode,
 1944        window: &mut Window,
 1945        cx: &mut Context<Workspace>,
 1946    ) -> Task<Result<()>> {
 1947        let to_load = if let Some(pane) = pane.upgrade() {
 1948            pane.update(cx, |pane, cx| {
 1949                window.focus(&pane.focus_handle(cx));
 1950                loop {
 1951                    // Retrieve the weak item handle from the history.
 1952                    let entry = pane.nav_history_mut().pop(mode, cx)?;
 1953
 1954                    // If the item is still present in this pane, then activate it.
 1955                    if let Some(index) = entry
 1956                        .item
 1957                        .upgrade()
 1958                        .and_then(|v| pane.index_for_item(v.as_ref()))
 1959                    {
 1960                        let prev_active_item_index = pane.active_item_index();
 1961                        pane.nav_history_mut().set_mode(mode);
 1962                        pane.activate_item(index, true, true, window, cx);
 1963                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1964
 1965                        let mut navigated = prev_active_item_index != pane.active_item_index();
 1966                        if let Some(data) = entry.data {
 1967                            navigated |= pane.active_item()?.navigate(data, window, cx);
 1968                        }
 1969
 1970                        if navigated {
 1971                            break None;
 1972                        }
 1973                    } else {
 1974                        // If the item is no longer present in this pane, then retrieve its
 1975                        // path info in order to reopen it.
 1976                        break pane
 1977                            .nav_history()
 1978                            .path_for_item(entry.item.id())
 1979                            .map(|(project_path, abs_path)| (project_path, abs_path, entry));
 1980                    }
 1981                }
 1982            })
 1983        } else {
 1984            None
 1985        };
 1986
 1987        if let Some((project_path, abs_path, entry)) = to_load {
 1988            // If the item was no longer present, then load it again from its previous path, first try the local path
 1989            let open_by_project_path = self.load_path(project_path.clone(), window, cx);
 1990
 1991            cx.spawn_in(window, async move  |workspace, cx| {
 1992                let open_by_project_path = open_by_project_path.await;
 1993                let mut navigated = false;
 1994                match open_by_project_path
 1995                    .with_context(|| format!("Navigating to {project_path:?}"))
 1996                {
 1997                    Ok((project_entry_id, build_item)) => {
 1998                        let prev_active_item_id = pane.update(cx, |pane, _| {
 1999                            pane.nav_history_mut().set_mode(mode);
 2000                            pane.active_item().map(|p| p.item_id())
 2001                        })?;
 2002
 2003                        pane.update_in(cx, |pane, window, cx| {
 2004                            let item = pane.open_item(
 2005                                project_entry_id,
 2006                                project_path,
 2007                                true,
 2008                                entry.is_preview,
 2009                                true,
 2010                                None,
 2011                                window, cx,
 2012                                build_item,
 2013                            );
 2014                            navigated |= Some(item.item_id()) != prev_active_item_id;
 2015                            pane.nav_history_mut().set_mode(NavigationMode::Normal);
 2016                            if let Some(data) = entry.data {
 2017                                navigated |= item.navigate(data, window, cx);
 2018                            }
 2019                        })?;
 2020                    }
 2021                    Err(open_by_project_path_e) => {
 2022                        // Fall back to opening by abs path, in case an external file was opened and closed,
 2023                        // and its worktree is now dropped
 2024                        if let Some(abs_path) = abs_path {
 2025                            let prev_active_item_id = pane.update(cx, |pane, _| {
 2026                                pane.nav_history_mut().set_mode(mode);
 2027                                pane.active_item().map(|p| p.item_id())
 2028                            })?;
 2029                            let open_by_abs_path = workspace.update_in(cx, |workspace, window, cx| {
 2030                                workspace.open_abs_path(abs_path.clone(), OpenOptions { visible: Some(OpenVisible::None), ..Default::default() }, window, cx)
 2031                            })?;
 2032                            match open_by_abs_path
 2033                                .await
 2034                                .with_context(|| format!("Navigating to {abs_path:?}"))
 2035                            {
 2036                                Ok(item) => {
 2037                                    pane.update_in(cx, |pane, window, cx| {
 2038                                        navigated |= Some(item.item_id()) != prev_active_item_id;
 2039                                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 2040                                        if let Some(data) = entry.data {
 2041                                            navigated |= item.navigate(data, window, cx);
 2042                                        }
 2043                                    })?;
 2044                                }
 2045                                Err(open_by_abs_path_e) => {
 2046                                    log::error!("Failed to navigate history: {open_by_project_path_e:#} and {open_by_abs_path_e:#}");
 2047                                }
 2048                            }
 2049                        }
 2050                    }
 2051                }
 2052
 2053                if !navigated {
 2054                    workspace
 2055                        .update_in(cx, |workspace, window, cx| {
 2056                            Self::navigate_history(workspace, pane, mode, window, cx)
 2057                        })?
 2058                        .await?;
 2059                }
 2060
 2061                Ok(())
 2062            })
 2063        } else {
 2064            Task::ready(Ok(()))
 2065        }
 2066    }
 2067
 2068    pub fn go_back(
 2069        &mut self,
 2070        pane: WeakEntity<Pane>,
 2071        window: &mut Window,
 2072        cx: &mut Context<Workspace>,
 2073    ) -> Task<Result<()>> {
 2074        self.navigate_history(pane, NavigationMode::GoingBack, window, cx)
 2075    }
 2076
 2077    pub fn go_forward(
 2078        &mut self,
 2079        pane: WeakEntity<Pane>,
 2080        window: &mut Window,
 2081        cx: &mut Context<Workspace>,
 2082    ) -> Task<Result<()>> {
 2083        self.navigate_history(pane, NavigationMode::GoingForward, window, cx)
 2084    }
 2085
 2086    pub fn reopen_closed_item(
 2087        &mut self,
 2088        window: &mut Window,
 2089        cx: &mut Context<Workspace>,
 2090    ) -> Task<Result<()>> {
 2091        self.navigate_history(
 2092            self.active_pane().downgrade(),
 2093            NavigationMode::ReopeningClosedItem,
 2094            window,
 2095            cx,
 2096        )
 2097    }
 2098
 2099    pub fn client(&self) -> &Arc<Client> {
 2100        &self.app_state.client
 2101    }
 2102
 2103    pub fn set_titlebar_item(&mut self, item: AnyView, _: &mut Window, cx: &mut Context<Self>) {
 2104        self.titlebar_item = Some(item);
 2105        cx.notify();
 2106    }
 2107
 2108    pub fn set_prompt_for_new_path(&mut self, prompt: PromptForNewPath) {
 2109        self.on_prompt_for_new_path = Some(prompt)
 2110    }
 2111
 2112    pub fn set_prompt_for_open_path(&mut self, prompt: PromptForOpenPath) {
 2113        self.on_prompt_for_open_path = Some(prompt)
 2114    }
 2115
 2116    pub fn set_terminal_provider(&mut self, provider: impl TerminalProvider + 'static) {
 2117        self.terminal_provider = Some(Box::new(provider));
 2118    }
 2119
 2120    pub fn set_debugger_provider(&mut self, provider: impl DebuggerProvider + 'static) {
 2121        self.debugger_provider = Some(Arc::new(provider));
 2122    }
 2123
 2124    pub fn debugger_provider(&self) -> Option<Arc<dyn DebuggerProvider>> {
 2125        self.debugger_provider.clone()
 2126    }
 2127
 2128    pub fn prompt_for_open_path(
 2129        &mut self,
 2130        path_prompt_options: PathPromptOptions,
 2131        lister: DirectoryLister,
 2132        window: &mut Window,
 2133        cx: &mut Context<Self>,
 2134    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2135        if !lister.is_local(cx) || !WorkspaceSettings::get_global(cx).use_system_path_prompts {
 2136            let prompt = self.on_prompt_for_open_path.take().unwrap();
 2137            let rx = prompt(self, lister, window, cx);
 2138            self.on_prompt_for_open_path = Some(prompt);
 2139            rx
 2140        } else {
 2141            let (tx, rx) = oneshot::channel();
 2142            let abs_path = cx.prompt_for_paths(path_prompt_options);
 2143
 2144            cx.spawn_in(window, async move |workspace, cx| {
 2145                let Ok(result) = abs_path.await else {
 2146                    return Ok(());
 2147                };
 2148
 2149                match result {
 2150                    Ok(result) => {
 2151                        tx.send(result).ok();
 2152                    }
 2153                    Err(err) => {
 2154                        let rx = workspace.update_in(cx, |workspace, window, cx| {
 2155                            workspace.show_portal_error(err.to_string(), cx);
 2156                            let prompt = workspace.on_prompt_for_open_path.take().unwrap();
 2157                            let rx = prompt(workspace, lister, window, cx);
 2158                            workspace.on_prompt_for_open_path = Some(prompt);
 2159                            rx
 2160                        })?;
 2161                        if let Ok(path) = rx.await {
 2162                            tx.send(path).ok();
 2163                        }
 2164                    }
 2165                };
 2166                anyhow::Ok(())
 2167            })
 2168            .detach();
 2169
 2170            rx
 2171        }
 2172    }
 2173
 2174    pub fn prompt_for_new_path(
 2175        &mut self,
 2176        lister: DirectoryLister,
 2177        suggested_name: Option<String>,
 2178        window: &mut Window,
 2179        cx: &mut Context<Self>,
 2180    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2181        if self.project.read(cx).is_via_collab()
 2182            || self.project.read(cx).is_via_remote_server()
 2183            || !WorkspaceSettings::get_global(cx).use_system_path_prompts
 2184        {
 2185            let prompt = self.on_prompt_for_new_path.take().unwrap();
 2186            let rx = prompt(self, lister, window, cx);
 2187            self.on_prompt_for_new_path = Some(prompt);
 2188            return rx;
 2189        }
 2190
 2191        let (tx, rx) = oneshot::channel();
 2192        cx.spawn_in(window, async move |workspace, cx| {
 2193            let abs_path = workspace.update(cx, |workspace, cx| {
 2194                let relative_to = workspace
 2195                    .most_recent_active_path(cx)
 2196                    .and_then(|p| p.parent().map(|p| p.to_path_buf()))
 2197                    .or_else(|| {
 2198                        let project = workspace.project.read(cx);
 2199                        project.visible_worktrees(cx).find_map(|worktree| {
 2200                            Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
 2201                        })
 2202                    })
 2203                    .or_else(std::env::home_dir)
 2204                    .unwrap_or_else(|| PathBuf::from(""));
 2205                cx.prompt_for_new_path(&relative_to, suggested_name.as_deref())
 2206            })?;
 2207            let abs_path = match abs_path.await? {
 2208                Ok(path) => path,
 2209                Err(err) => {
 2210                    let rx = workspace.update_in(cx, |workspace, window, cx| {
 2211                        workspace.show_portal_error(err.to_string(), cx);
 2212
 2213                        let prompt = workspace.on_prompt_for_new_path.take().unwrap();
 2214                        let rx = prompt(workspace, lister, window, cx);
 2215                        workspace.on_prompt_for_new_path = Some(prompt);
 2216                        rx
 2217                    })?;
 2218                    if let Ok(path) = rx.await {
 2219                        tx.send(path).ok();
 2220                    }
 2221                    return anyhow::Ok(());
 2222                }
 2223            };
 2224
 2225            tx.send(abs_path.map(|path| vec![path])).ok();
 2226            anyhow::Ok(())
 2227        })
 2228        .detach();
 2229
 2230        rx
 2231    }
 2232
 2233    pub fn titlebar_item(&self) -> Option<AnyView> {
 2234        self.titlebar_item.clone()
 2235    }
 2236
 2237    /// Call the given callback with a workspace whose project is local.
 2238    ///
 2239    /// If the given workspace has a local project, then it will be passed
 2240    /// to the callback. Otherwise, a new empty window will be created.
 2241    pub fn with_local_workspace<T, F>(
 2242        &mut self,
 2243        window: &mut Window,
 2244        cx: &mut Context<Self>,
 2245        callback: F,
 2246    ) -> Task<Result<T>>
 2247    where
 2248        T: 'static,
 2249        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
 2250    {
 2251        if self.project.read(cx).is_local() {
 2252            Task::ready(Ok(callback(self, window, cx)))
 2253        } else {
 2254            let env = self.project.read(cx).cli_environment(cx);
 2255            let task = Self::new_local(Vec::new(), self.app_state.clone(), None, env, cx);
 2256            cx.spawn_in(window, async move |_vh, cx| {
 2257                let (workspace, _) = task.await?;
 2258                workspace.update(cx, callback)
 2259            })
 2260        }
 2261    }
 2262
 2263    pub fn worktrees<'a>(&self, cx: &'a App) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2264        self.project.read(cx).worktrees(cx)
 2265    }
 2266
 2267    pub fn visible_worktrees<'a>(
 2268        &self,
 2269        cx: &'a App,
 2270    ) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2271        self.project.read(cx).visible_worktrees(cx)
 2272    }
 2273
 2274    #[cfg(any(test, feature = "test-support"))]
 2275    pub fn worktree_scans_complete(&self, cx: &App) -> impl Future<Output = ()> + 'static + use<> {
 2276        let futures = self
 2277            .worktrees(cx)
 2278            .filter_map(|worktree| worktree.read(cx).as_local())
 2279            .map(|worktree| worktree.scan_complete())
 2280            .collect::<Vec<_>>();
 2281        async move {
 2282            for future in futures {
 2283                future.await;
 2284            }
 2285        }
 2286    }
 2287
 2288    pub fn close_global(cx: &mut App) {
 2289        cx.defer(|cx| {
 2290            cx.windows().iter().find(|window| {
 2291                window
 2292                    .update(cx, |_, window, _| {
 2293                        if window.is_window_active() {
 2294                            //This can only get called when the window's project connection has been lost
 2295                            //so we don't need to prompt the user for anything and instead just close the window
 2296                            window.remove_window();
 2297                            true
 2298                        } else {
 2299                            false
 2300                        }
 2301                    })
 2302                    .unwrap_or(false)
 2303            });
 2304        });
 2305    }
 2306
 2307    pub fn close_window(&mut self, _: &CloseWindow, window: &mut Window, cx: &mut Context<Self>) {
 2308        let prepare = self.prepare_to_close(CloseIntent::CloseWindow, window, cx);
 2309        cx.spawn_in(window, async move |_, cx| {
 2310            if prepare.await? {
 2311                cx.update(|window, _cx| window.remove_window())?;
 2312            }
 2313            anyhow::Ok(())
 2314        })
 2315        .detach_and_log_err(cx)
 2316    }
 2317
 2318    pub fn move_focused_panel_to_next_position(
 2319        &mut self,
 2320        _: &MoveFocusedPanelToNextPosition,
 2321        window: &mut Window,
 2322        cx: &mut Context<Self>,
 2323    ) {
 2324        let docks = self.all_docks();
 2325        let active_dock = docks
 2326            .into_iter()
 2327            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 2328
 2329        if let Some(dock) = active_dock {
 2330            dock.update(cx, |dock, cx| {
 2331                let active_panel = dock
 2332                    .active_panel()
 2333                    .filter(|panel| panel.panel_focus_handle(cx).contains_focused(window, cx));
 2334
 2335                if let Some(panel) = active_panel {
 2336                    panel.move_to_next_position(window, cx);
 2337                }
 2338            })
 2339        }
 2340    }
 2341
 2342    pub fn prepare_to_close(
 2343        &mut self,
 2344        close_intent: CloseIntent,
 2345        window: &mut Window,
 2346        cx: &mut Context<Self>,
 2347    ) -> Task<Result<bool>> {
 2348        let active_call = self.active_call().cloned();
 2349
 2350        // On Linux and Windows, closing the last window should restore the last workspace.
 2351        let save_last_workspace = cfg!(not(target_os = "macos"))
 2352            && close_intent != CloseIntent::ReplaceWindow
 2353            && cx.windows().len() == 1;
 2354
 2355        cx.spawn_in(window, async move |this, cx| {
 2356            let workspace_count = cx.update(|_window, cx| {
 2357                cx.windows()
 2358                    .iter()
 2359                    .filter(|window| window.downcast::<Workspace>().is_some())
 2360                    .count()
 2361            })?;
 2362
 2363            if let Some(active_call) = active_call
 2364                && workspace_count == 1
 2365                && active_call.read_with(cx, |call, _| call.room().is_some())?
 2366            {
 2367                if close_intent == CloseIntent::CloseWindow {
 2368                    let answer = cx.update(|window, cx| {
 2369                        window.prompt(
 2370                            PromptLevel::Warning,
 2371                            "Do you want to leave the current call?",
 2372                            None,
 2373                            &["Close window and hang up", "Cancel"],
 2374                            cx,
 2375                        )
 2376                    })?;
 2377
 2378                    if answer.await.log_err() == Some(1) {
 2379                        return anyhow::Ok(false);
 2380                    } else {
 2381                        active_call
 2382                            .update(cx, |call, cx| call.hang_up(cx))?
 2383                            .await
 2384                            .log_err();
 2385                    }
 2386                }
 2387                if close_intent == CloseIntent::ReplaceWindow {
 2388                    _ = active_call.update(cx, |this, cx| {
 2389                        let workspace = cx
 2390                            .windows()
 2391                            .iter()
 2392                            .filter_map(|window| window.downcast::<Workspace>())
 2393                            .next()
 2394                            .unwrap();
 2395                        let project = workspace.read(cx)?.project.clone();
 2396                        if project.read(cx).is_shared() {
 2397                            this.unshare_project(project, cx)?;
 2398                        }
 2399                        Ok::<_, anyhow::Error>(())
 2400                    })?;
 2401                }
 2402            }
 2403
 2404            let save_result = this
 2405                .update_in(cx, |this, window, cx| {
 2406                    this.save_all_internal(SaveIntent::Close, window, cx)
 2407                })?
 2408                .await;
 2409
 2410            // If we're not quitting, but closing, we remove the workspace from
 2411            // the current session.
 2412            if close_intent != CloseIntent::Quit
 2413                && !save_last_workspace
 2414                && save_result.as_ref().is_ok_and(|&res| res)
 2415            {
 2416                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))?
 2417                    .await;
 2418            }
 2419
 2420            save_result
 2421        })
 2422    }
 2423
 2424    fn save_all(&mut self, action: &SaveAll, window: &mut Window, cx: &mut Context<Self>) {
 2425        self.save_all_internal(
 2426            action.save_intent.unwrap_or(SaveIntent::SaveAll),
 2427            window,
 2428            cx,
 2429        )
 2430        .detach_and_log_err(cx);
 2431    }
 2432
 2433    fn send_keystrokes(
 2434        &mut self,
 2435        action: &SendKeystrokes,
 2436        window: &mut Window,
 2437        cx: &mut Context<Self>,
 2438    ) {
 2439        let keystrokes: Vec<Keystroke> = action
 2440            .0
 2441            .split(' ')
 2442            .flat_map(|k| Keystroke::parse(k).log_err())
 2443            .collect();
 2444        let _ = self.send_keystrokes_impl(keystrokes, window, cx);
 2445    }
 2446
 2447    pub fn send_keystrokes_impl(
 2448        &mut self,
 2449        keystrokes: Vec<Keystroke>,
 2450        window: &mut Window,
 2451        cx: &mut Context<Self>,
 2452    ) -> Shared<Task<()>> {
 2453        let mut state = self.dispatching_keystrokes.borrow_mut();
 2454        if !state.dispatched.insert(keystrokes.clone()) {
 2455            cx.propagate();
 2456            return state.task.clone().unwrap();
 2457        }
 2458
 2459        state.queue.extend(keystrokes);
 2460
 2461        let keystrokes = self.dispatching_keystrokes.clone();
 2462        if state.task.is_none() {
 2463            state.task = Some(
 2464                window
 2465                    .spawn(cx, async move |cx| {
 2466                        // limit to 100 keystrokes to avoid infinite recursion.
 2467                        for _ in 0..100 {
 2468                            let mut state = keystrokes.borrow_mut();
 2469                            let Some(keystroke) = state.queue.pop_front() else {
 2470                                state.dispatched.clear();
 2471                                state.task.take();
 2472                                return;
 2473                            };
 2474                            drop(state);
 2475                            cx.update(|window, cx| {
 2476                                let focused = window.focused(cx);
 2477                                window.dispatch_keystroke(keystroke.clone(), cx);
 2478                                if window.focused(cx) != focused {
 2479                                    // dispatch_keystroke may cause the focus to change.
 2480                                    // draw's side effect is to schedule the FocusChanged events in the current flush effect cycle
 2481                                    // And we need that to happen before the next keystroke to keep vim mode happy...
 2482                                    // (Note that the tests always do this implicitly, so you must manually test with something like:
 2483                                    //   "bindings": { "g z": ["workspace::SendKeystrokes", ": j <enter> u"]}
 2484                                    // )
 2485                                    window.draw(cx).clear();
 2486                                }
 2487                            })
 2488                            .ok();
 2489                        }
 2490
 2491                        *keystrokes.borrow_mut() = Default::default();
 2492                        log::error!("over 100 keystrokes passed to send_keystrokes");
 2493                    })
 2494                    .shared(),
 2495            );
 2496        }
 2497        state.task.clone().unwrap()
 2498    }
 2499
 2500    fn save_all_internal(
 2501        &mut self,
 2502        mut save_intent: SaveIntent,
 2503        window: &mut Window,
 2504        cx: &mut Context<Self>,
 2505    ) -> Task<Result<bool>> {
 2506        if self.project.read(cx).is_disconnected(cx) {
 2507            return Task::ready(Ok(true));
 2508        }
 2509        let dirty_items = self
 2510            .panes
 2511            .iter()
 2512            .flat_map(|pane| {
 2513                pane.read(cx).items().filter_map(|item| {
 2514                    if item.is_dirty(cx) {
 2515                        item.tab_content_text(0, cx);
 2516                        Some((pane.downgrade(), item.boxed_clone()))
 2517                    } else {
 2518                        None
 2519                    }
 2520                })
 2521            })
 2522            .collect::<Vec<_>>();
 2523
 2524        let project = self.project.clone();
 2525        cx.spawn_in(window, async move |workspace, cx| {
 2526            let dirty_items = if save_intent == SaveIntent::Close && !dirty_items.is_empty() {
 2527                let (serialize_tasks, remaining_dirty_items) =
 2528                    workspace.update_in(cx, |workspace, window, cx| {
 2529                        let mut remaining_dirty_items = Vec::new();
 2530                        let mut serialize_tasks = Vec::new();
 2531                        for (pane, item) in dirty_items {
 2532                            if let Some(task) = item
 2533                                .to_serializable_item_handle(cx)
 2534                                .and_then(|handle| handle.serialize(workspace, true, window, cx))
 2535                            {
 2536                                serialize_tasks.push(task);
 2537                            } else {
 2538                                remaining_dirty_items.push((pane, item));
 2539                            }
 2540                        }
 2541                        (serialize_tasks, remaining_dirty_items)
 2542                    })?;
 2543
 2544                futures::future::try_join_all(serialize_tasks).await?;
 2545
 2546                if remaining_dirty_items.len() > 1 {
 2547                    let answer = workspace.update_in(cx, |_, window, cx| {
 2548                        let detail = Pane::file_names_for_prompt(
 2549                            &mut remaining_dirty_items.iter().map(|(_, handle)| handle),
 2550                            cx,
 2551                        );
 2552                        window.prompt(
 2553                            PromptLevel::Warning,
 2554                            "Do you want to save all changes in the following files?",
 2555                            Some(&detail),
 2556                            &["Save all", "Discard all", "Cancel"],
 2557                            cx,
 2558                        )
 2559                    })?;
 2560                    match answer.await.log_err() {
 2561                        Some(0) => save_intent = SaveIntent::SaveAll,
 2562                        Some(1) => save_intent = SaveIntent::Skip,
 2563                        Some(2) => return Ok(false),
 2564                        _ => {}
 2565                    }
 2566                }
 2567
 2568                remaining_dirty_items
 2569            } else {
 2570                dirty_items
 2571            };
 2572
 2573            for (pane, item) in dirty_items {
 2574                let (singleton, project_entry_ids) = cx.update(|_, cx| {
 2575                    (
 2576                        item.buffer_kind(cx) == ItemBufferKind::Singleton,
 2577                        item.project_entry_ids(cx),
 2578                    )
 2579                })?;
 2580                if (singleton || !project_entry_ids.is_empty())
 2581                    && !Pane::save_item(project.clone(), &pane, &*item, save_intent, cx).await?
 2582                {
 2583                    return Ok(false);
 2584                }
 2585            }
 2586            Ok(true)
 2587        })
 2588    }
 2589
 2590    pub fn open_workspace_for_paths(
 2591        &mut self,
 2592        replace_current_window: bool,
 2593        paths: Vec<PathBuf>,
 2594        window: &mut Window,
 2595        cx: &mut Context<Self>,
 2596    ) -> Task<Result<()>> {
 2597        let window_handle = window.window_handle().downcast::<Self>();
 2598        let is_remote = self.project.read(cx).is_via_collab();
 2599        let has_worktree = self.project.read(cx).worktrees(cx).next().is_some();
 2600        let has_dirty_items = self.items(cx).any(|item| item.is_dirty(cx));
 2601
 2602        let window_to_replace = if replace_current_window {
 2603            window_handle
 2604        } else if is_remote || has_worktree || has_dirty_items {
 2605            None
 2606        } else {
 2607            window_handle
 2608        };
 2609        let app_state = self.app_state.clone();
 2610
 2611        cx.spawn(async move |_, cx| {
 2612            cx.update(|cx| {
 2613                open_paths(
 2614                    &paths,
 2615                    app_state,
 2616                    OpenOptions {
 2617                        replace_window: window_to_replace,
 2618                        ..Default::default()
 2619                    },
 2620                    cx,
 2621                )
 2622            })?
 2623            .await?;
 2624            Ok(())
 2625        })
 2626    }
 2627
 2628    #[allow(clippy::type_complexity)]
 2629    pub fn open_paths(
 2630        &mut self,
 2631        mut abs_paths: Vec<PathBuf>,
 2632        options: OpenOptions,
 2633        pane: Option<WeakEntity<Pane>>,
 2634        window: &mut Window,
 2635        cx: &mut Context<Self>,
 2636    ) -> Task<Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>> {
 2637        let fs = self.app_state.fs.clone();
 2638
 2639        // Sort the paths to ensure we add worktrees for parents before their children.
 2640        abs_paths.sort_unstable();
 2641        cx.spawn_in(window, async move |this, cx| {
 2642            let mut tasks = Vec::with_capacity(abs_paths.len());
 2643
 2644            for abs_path in &abs_paths {
 2645                let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
 2646                    OpenVisible::All => Some(true),
 2647                    OpenVisible::None => Some(false),
 2648                    OpenVisible::OnlyFiles => match fs.metadata(abs_path).await.log_err() {
 2649                        Some(Some(metadata)) => Some(!metadata.is_dir),
 2650                        Some(None) => Some(true),
 2651                        None => None,
 2652                    },
 2653                    OpenVisible::OnlyDirectories => match fs.metadata(abs_path).await.log_err() {
 2654                        Some(Some(metadata)) => Some(metadata.is_dir),
 2655                        Some(None) => Some(false),
 2656                        None => None,
 2657                    },
 2658                };
 2659                let project_path = match visible {
 2660                    Some(visible) => match this
 2661                        .update(cx, |this, cx| {
 2662                            Workspace::project_path_for_path(
 2663                                this.project.clone(),
 2664                                abs_path,
 2665                                visible,
 2666                                cx,
 2667                            )
 2668                        })
 2669                        .log_err()
 2670                    {
 2671                        Some(project_path) => project_path.await.log_err(),
 2672                        None => None,
 2673                    },
 2674                    None => None,
 2675                };
 2676
 2677                let this = this.clone();
 2678                let abs_path: Arc<Path> = SanitizedPath::new(&abs_path).as_path().into();
 2679                let fs = fs.clone();
 2680                let pane = pane.clone();
 2681                let task = cx.spawn(async move |cx| {
 2682                    let (worktree, project_path) = project_path?;
 2683                    if fs.is_dir(&abs_path).await {
 2684                        this.update(cx, |workspace, cx| {
 2685                            let worktree = worktree.read(cx);
 2686                            let worktree_abs_path = worktree.abs_path();
 2687                            let entry_id = if abs_path.as_ref() == worktree_abs_path.as_ref() {
 2688                                worktree.root_entry()
 2689                            } else {
 2690                                abs_path
 2691                                    .strip_prefix(worktree_abs_path.as_ref())
 2692                                    .ok()
 2693                                    .and_then(|relative_path| {
 2694                                        let relative_path =
 2695                                            RelPath::new(relative_path, PathStyle::local())
 2696                                                .log_err()?;
 2697                                        worktree.entry_for_path(&relative_path)
 2698                                    })
 2699                            }
 2700                            .map(|entry| entry.id);
 2701                            if let Some(entry_id) = entry_id {
 2702                                workspace.project.update(cx, |_, cx| {
 2703                                    cx.emit(project::Event::ActiveEntryChanged(Some(entry_id)));
 2704                                })
 2705                            }
 2706                        })
 2707                        .ok()?;
 2708                        None
 2709                    } else {
 2710                        Some(
 2711                            this.update_in(cx, |this, window, cx| {
 2712                                this.open_path(
 2713                                    project_path,
 2714                                    pane,
 2715                                    options.focus.unwrap_or(true),
 2716                                    window,
 2717                                    cx,
 2718                                )
 2719                            })
 2720                            .ok()?
 2721                            .await,
 2722                        )
 2723                    }
 2724                });
 2725                tasks.push(task);
 2726            }
 2727
 2728            futures::future::join_all(tasks).await
 2729        })
 2730    }
 2731
 2732    pub fn open_resolved_path(
 2733        &mut self,
 2734        path: ResolvedPath,
 2735        window: &mut Window,
 2736        cx: &mut Context<Self>,
 2737    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 2738        match path {
 2739            ResolvedPath::ProjectPath { project_path, .. } => {
 2740                self.open_path(project_path, None, true, window, cx)
 2741            }
 2742            ResolvedPath::AbsPath { path, .. } => self.open_abs_path(
 2743                PathBuf::from(path),
 2744                OpenOptions {
 2745                    visible: Some(OpenVisible::None),
 2746                    ..Default::default()
 2747                },
 2748                window,
 2749                cx,
 2750            ),
 2751        }
 2752    }
 2753
 2754    pub fn absolute_path_of_worktree(
 2755        &self,
 2756        worktree_id: WorktreeId,
 2757        cx: &mut Context<Self>,
 2758    ) -> Option<PathBuf> {
 2759        self.project
 2760            .read(cx)
 2761            .worktree_for_id(worktree_id, cx)
 2762            // TODO: use `abs_path` or `root_dir`
 2763            .map(|wt| wt.read(cx).abs_path().as_ref().to_path_buf())
 2764    }
 2765
 2766    fn add_folder_to_project(
 2767        &mut self,
 2768        _: &AddFolderToProject,
 2769        window: &mut Window,
 2770        cx: &mut Context<Self>,
 2771    ) {
 2772        let project = self.project.read(cx);
 2773        if project.is_via_collab() {
 2774            self.show_error(
 2775                &anyhow!("You cannot add folders to someone else's project"),
 2776                cx,
 2777            );
 2778            return;
 2779        }
 2780        let paths = self.prompt_for_open_path(
 2781            PathPromptOptions {
 2782                files: false,
 2783                directories: true,
 2784                multiple: true,
 2785                prompt: None,
 2786            },
 2787            DirectoryLister::Project(self.project.clone()),
 2788            window,
 2789            cx,
 2790        );
 2791        cx.spawn_in(window, async move |this, cx| {
 2792            if let Some(paths) = paths.await.log_err().flatten() {
 2793                let results = this
 2794                    .update_in(cx, |this, window, cx| {
 2795                        this.open_paths(
 2796                            paths,
 2797                            OpenOptions {
 2798                                visible: Some(OpenVisible::All),
 2799                                ..Default::default()
 2800                            },
 2801                            None,
 2802                            window,
 2803                            cx,
 2804                        )
 2805                    })?
 2806                    .await;
 2807                for result in results.into_iter().flatten() {
 2808                    result.log_err();
 2809                }
 2810            }
 2811            anyhow::Ok(())
 2812        })
 2813        .detach_and_log_err(cx);
 2814    }
 2815
 2816    pub fn project_path_for_path(
 2817        project: Entity<Project>,
 2818        abs_path: &Path,
 2819        visible: bool,
 2820        cx: &mut App,
 2821    ) -> Task<Result<(Entity<Worktree>, ProjectPath)>> {
 2822        let entry = project.update(cx, |project, cx| {
 2823            project.find_or_create_worktree(abs_path, visible, cx)
 2824        });
 2825        cx.spawn(async move |cx| {
 2826            let (worktree, path) = entry.await?;
 2827            let worktree_id = worktree.read_with(cx, |t, _| t.id())?;
 2828            Ok((
 2829                worktree,
 2830                ProjectPath {
 2831                    worktree_id,
 2832                    path: path,
 2833                },
 2834            ))
 2835        })
 2836    }
 2837
 2838    pub fn items<'a>(&'a self, cx: &'a App) -> impl 'a + Iterator<Item = &'a Box<dyn ItemHandle>> {
 2839        self.panes.iter().flat_map(|pane| pane.read(cx).items())
 2840    }
 2841
 2842    pub fn item_of_type<T: Item>(&self, cx: &App) -> Option<Entity<T>> {
 2843        self.items_of_type(cx).max_by_key(|item| item.item_id())
 2844    }
 2845
 2846    pub fn items_of_type<'a, T: Item>(
 2847        &'a self,
 2848        cx: &'a App,
 2849    ) -> impl 'a + Iterator<Item = Entity<T>> {
 2850        self.panes
 2851            .iter()
 2852            .flat_map(|pane| pane.read(cx).items_of_type())
 2853    }
 2854
 2855    pub fn active_item(&self, cx: &App) -> Option<Box<dyn ItemHandle>> {
 2856        self.active_pane().read(cx).active_item()
 2857    }
 2858
 2859    pub fn active_item_as<I: 'static>(&self, cx: &App) -> Option<Entity<I>> {
 2860        let item = self.active_item(cx)?;
 2861        item.to_any().downcast::<I>().ok()
 2862    }
 2863
 2864    fn active_project_path(&self, cx: &App) -> Option<ProjectPath> {
 2865        self.active_item(cx).and_then(|item| item.project_path(cx))
 2866    }
 2867
 2868    pub fn most_recent_active_path(&self, cx: &App) -> Option<PathBuf> {
 2869        self.recent_navigation_history_iter(cx)
 2870            .filter_map(|(path, abs_path)| {
 2871                let worktree = self
 2872                    .project
 2873                    .read(cx)
 2874                    .worktree_for_id(path.worktree_id, cx)?;
 2875                if worktree.read(cx).is_visible() {
 2876                    abs_path
 2877                } else {
 2878                    None
 2879                }
 2880            })
 2881            .next()
 2882    }
 2883
 2884    pub fn save_active_item(
 2885        &mut self,
 2886        save_intent: SaveIntent,
 2887        window: &mut Window,
 2888        cx: &mut App,
 2889    ) -> Task<Result<()>> {
 2890        let project = self.project.clone();
 2891        let pane = self.active_pane();
 2892        let item = pane.read(cx).active_item();
 2893        let pane = pane.downgrade();
 2894
 2895        window.spawn(cx, async move |cx| {
 2896            if let Some(item) = item {
 2897                Pane::save_item(project, &pane, item.as_ref(), save_intent, cx)
 2898                    .await
 2899                    .map(|_| ())
 2900            } else {
 2901                Ok(())
 2902            }
 2903        })
 2904    }
 2905
 2906    pub fn close_inactive_items_and_panes(
 2907        &mut self,
 2908        action: &CloseInactiveTabsAndPanes,
 2909        window: &mut Window,
 2910        cx: &mut Context<Self>,
 2911    ) {
 2912        if let Some(task) = self.close_all_internal(
 2913            true,
 2914            action.save_intent.unwrap_or(SaveIntent::Close),
 2915            window,
 2916            cx,
 2917        ) {
 2918            task.detach_and_log_err(cx)
 2919        }
 2920    }
 2921
 2922    pub fn close_all_items_and_panes(
 2923        &mut self,
 2924        action: &CloseAllItemsAndPanes,
 2925        window: &mut Window,
 2926        cx: &mut Context<Self>,
 2927    ) {
 2928        if let Some(task) = self.close_all_internal(
 2929            false,
 2930            action.save_intent.unwrap_or(SaveIntent::Close),
 2931            window,
 2932            cx,
 2933        ) {
 2934            task.detach_and_log_err(cx)
 2935        }
 2936    }
 2937
 2938    fn close_all_internal(
 2939        &mut self,
 2940        retain_active_pane: bool,
 2941        save_intent: SaveIntent,
 2942        window: &mut Window,
 2943        cx: &mut Context<Self>,
 2944    ) -> Option<Task<Result<()>>> {
 2945        let current_pane = self.active_pane();
 2946
 2947        let mut tasks = Vec::new();
 2948
 2949        if retain_active_pane {
 2950            let current_pane_close = current_pane.update(cx, |pane, cx| {
 2951                pane.close_other_items(
 2952                    &CloseOtherItems {
 2953                        save_intent: None,
 2954                        close_pinned: false,
 2955                    },
 2956                    None,
 2957                    window,
 2958                    cx,
 2959                )
 2960            });
 2961
 2962            tasks.push(current_pane_close);
 2963        }
 2964
 2965        for pane in self.panes() {
 2966            if retain_active_pane && pane.entity_id() == current_pane.entity_id() {
 2967                continue;
 2968            }
 2969
 2970            let close_pane_items = pane.update(cx, |pane: &mut Pane, cx| {
 2971                pane.close_all_items(
 2972                    &CloseAllItems {
 2973                        save_intent: Some(save_intent),
 2974                        close_pinned: false,
 2975                    },
 2976                    window,
 2977                    cx,
 2978                )
 2979            });
 2980
 2981            tasks.push(close_pane_items)
 2982        }
 2983
 2984        if tasks.is_empty() {
 2985            None
 2986        } else {
 2987            Some(cx.spawn_in(window, async move |_, _| {
 2988                for task in tasks {
 2989                    task.await?
 2990                }
 2991                Ok(())
 2992            }))
 2993        }
 2994    }
 2995
 2996    pub fn is_dock_at_position_open(&self, position: DockPosition, cx: &mut Context<Self>) -> bool {
 2997        self.dock_at_position(position).read(cx).is_open()
 2998    }
 2999
 3000    pub fn toggle_dock(
 3001        &mut self,
 3002        dock_side: DockPosition,
 3003        window: &mut Window,
 3004        cx: &mut Context<Self>,
 3005    ) {
 3006        let mut focus_center = false;
 3007        let mut reveal_dock = false;
 3008
 3009        let other_is_zoomed = self.zoomed.is_some() && self.zoomed_position != Some(dock_side);
 3010        let was_visible = self.is_dock_at_position_open(dock_side, cx) && !other_is_zoomed;
 3011        if was_visible {
 3012            self.save_open_dock_positions(cx);
 3013        }
 3014
 3015        let dock = self.dock_at_position(dock_side);
 3016        dock.update(cx, |dock, cx| {
 3017            dock.set_open(!was_visible, window, cx);
 3018
 3019            if dock.active_panel().is_none() {
 3020                let Some(panel_ix) = dock
 3021                    .first_enabled_panel_idx(cx)
 3022                    .log_with_level(log::Level::Info)
 3023                else {
 3024                    return;
 3025                };
 3026                dock.activate_panel(panel_ix, window, cx);
 3027            }
 3028
 3029            if let Some(active_panel) = dock.active_panel() {
 3030                if was_visible {
 3031                    if active_panel
 3032                        .panel_focus_handle(cx)
 3033                        .contains_focused(window, cx)
 3034                    {
 3035                        focus_center = true;
 3036                    }
 3037                } else {
 3038                    let focus_handle = &active_panel.panel_focus_handle(cx);
 3039                    window.focus(focus_handle);
 3040                    reveal_dock = true;
 3041                }
 3042            }
 3043        });
 3044
 3045        if reveal_dock {
 3046            self.dismiss_zoomed_items_to_reveal(Some(dock_side), window, cx);
 3047        }
 3048
 3049        if focus_center {
 3050            self.active_pane
 3051                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3052        }
 3053
 3054        cx.notify();
 3055        self.serialize_workspace(window, cx);
 3056    }
 3057
 3058    fn active_dock(&self, window: &Window, cx: &Context<Self>) -> Option<&Entity<Dock>> {
 3059        self.all_docks().into_iter().find(|&dock| {
 3060            dock.read(cx).is_open() && dock.focus_handle(cx).contains_focused(window, cx)
 3061        })
 3062    }
 3063
 3064    fn close_active_dock(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
 3065        if let Some(dock) = self.active_dock(window, cx).cloned() {
 3066            self.save_open_dock_positions(cx);
 3067            dock.update(cx, |dock, cx| {
 3068                dock.set_open(false, window, cx);
 3069            });
 3070            return true;
 3071        }
 3072        false
 3073    }
 3074
 3075    pub fn close_all_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3076        self.save_open_dock_positions(cx);
 3077        for dock in self.all_docks() {
 3078            dock.update(cx, |dock, cx| {
 3079                dock.set_open(false, window, cx);
 3080            });
 3081        }
 3082
 3083        cx.focus_self(window);
 3084        cx.notify();
 3085        self.serialize_workspace(window, cx);
 3086    }
 3087
 3088    fn get_open_dock_positions(&self, cx: &Context<Self>) -> Vec<DockPosition> {
 3089        self.all_docks()
 3090            .into_iter()
 3091            .filter_map(|dock| {
 3092                let dock_ref = dock.read(cx);
 3093                if dock_ref.is_open() {
 3094                    Some(dock_ref.position())
 3095                } else {
 3096                    None
 3097                }
 3098            })
 3099            .collect()
 3100    }
 3101
 3102    /// Saves the positions of currently open docks.
 3103    ///
 3104    /// Updates `last_open_dock_positions` with positions of all currently open
 3105    /// docks, to later be restored by the 'Toggle All Docks' action.
 3106    fn save_open_dock_positions(&mut self, cx: &mut Context<Self>) {
 3107        let open_dock_positions = self.get_open_dock_positions(cx);
 3108        if !open_dock_positions.is_empty() {
 3109            self.last_open_dock_positions = open_dock_positions;
 3110        }
 3111    }
 3112
 3113    /// Toggles all docks between open and closed states.
 3114    ///
 3115    /// If any docks are open, closes all and remembers their positions. If all
 3116    /// docks are closed, restores the last remembered dock configuration.
 3117    fn toggle_all_docks(
 3118        &mut self,
 3119        _: &ToggleAllDocks,
 3120        window: &mut Window,
 3121        cx: &mut Context<Self>,
 3122    ) {
 3123        let open_dock_positions = self.get_open_dock_positions(cx);
 3124
 3125        if !open_dock_positions.is_empty() {
 3126            self.close_all_docks(window, cx);
 3127        } else if !self.last_open_dock_positions.is_empty() {
 3128            self.restore_last_open_docks(window, cx);
 3129        }
 3130    }
 3131
 3132    /// Reopens docks from the most recently remembered configuration.
 3133    ///
 3134    /// Opens all docks whose positions are stored in `last_open_dock_positions`
 3135    /// and clears the stored positions.
 3136    fn restore_last_open_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3137        let positions_to_open = std::mem::take(&mut self.last_open_dock_positions);
 3138
 3139        for position in positions_to_open {
 3140            let dock = self.dock_at_position(position);
 3141            dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
 3142        }
 3143
 3144        cx.focus_self(window);
 3145        cx.notify();
 3146        self.serialize_workspace(window, cx);
 3147    }
 3148
 3149    /// Transfer focus to the panel of the given type.
 3150    pub fn focus_panel<T: Panel>(
 3151        &mut self,
 3152        window: &mut Window,
 3153        cx: &mut Context<Self>,
 3154    ) -> Option<Entity<T>> {
 3155        let panel = self.focus_or_unfocus_panel::<T>(window, cx, |_, _, _| true)?;
 3156        panel.to_any().downcast().ok()
 3157    }
 3158
 3159    /// Focus the panel of the given type if it isn't already focused. If it is
 3160    /// already focused, then transfer focus back to the workspace center.
 3161    pub fn toggle_panel_focus<T: Panel>(
 3162        &mut self,
 3163        window: &mut Window,
 3164        cx: &mut Context<Self>,
 3165    ) -> bool {
 3166        let mut did_focus_panel = false;
 3167        self.focus_or_unfocus_panel::<T>(window, cx, |panel, window, cx| {
 3168            did_focus_panel = !panel.panel_focus_handle(cx).contains_focused(window, cx);
 3169            did_focus_panel
 3170        });
 3171        did_focus_panel
 3172    }
 3173
 3174    pub fn activate_panel_for_proto_id(
 3175        &mut self,
 3176        panel_id: PanelId,
 3177        window: &mut Window,
 3178        cx: &mut Context<Self>,
 3179    ) -> Option<Arc<dyn PanelHandle>> {
 3180        let mut panel = None;
 3181        for dock in self.all_docks() {
 3182            if let Some(panel_index) = dock.read(cx).panel_index_for_proto_id(panel_id) {
 3183                panel = dock.update(cx, |dock, cx| {
 3184                    dock.activate_panel(panel_index, window, cx);
 3185                    dock.set_open(true, window, cx);
 3186                    dock.active_panel().cloned()
 3187                });
 3188                break;
 3189            }
 3190        }
 3191
 3192        if panel.is_some() {
 3193            cx.notify();
 3194            self.serialize_workspace(window, cx);
 3195        }
 3196
 3197        panel
 3198    }
 3199
 3200    /// Focus or unfocus the given panel type, depending on the given callback.
 3201    fn focus_or_unfocus_panel<T: Panel>(
 3202        &mut self,
 3203        window: &mut Window,
 3204        cx: &mut Context<Self>,
 3205        mut should_focus: impl FnMut(&dyn PanelHandle, &mut Window, &mut Context<Dock>) -> bool,
 3206    ) -> Option<Arc<dyn PanelHandle>> {
 3207        let mut result_panel = None;
 3208        let mut serialize = false;
 3209        for dock in self.all_docks() {
 3210            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3211                let mut focus_center = false;
 3212                let panel = dock.update(cx, |dock, cx| {
 3213                    dock.activate_panel(panel_index, window, cx);
 3214
 3215                    let panel = dock.active_panel().cloned();
 3216                    if let Some(panel) = panel.as_ref() {
 3217                        if should_focus(&**panel, window, cx) {
 3218                            dock.set_open(true, window, cx);
 3219                            panel.panel_focus_handle(cx).focus(window);
 3220                        } else {
 3221                            focus_center = true;
 3222                        }
 3223                    }
 3224                    panel
 3225                });
 3226
 3227                if focus_center {
 3228                    self.active_pane
 3229                        .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3230                }
 3231
 3232                result_panel = panel;
 3233                serialize = true;
 3234                break;
 3235            }
 3236        }
 3237
 3238        if serialize {
 3239            self.serialize_workspace(window, cx);
 3240        }
 3241
 3242        cx.notify();
 3243        result_panel
 3244    }
 3245
 3246    /// Open the panel of the given type
 3247    pub fn open_panel<T: Panel>(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3248        for dock in self.all_docks() {
 3249            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3250                dock.update(cx, |dock, cx| {
 3251                    dock.activate_panel(panel_index, window, cx);
 3252                    dock.set_open(true, window, cx);
 3253                });
 3254            }
 3255        }
 3256    }
 3257
 3258    pub fn close_panel<T: Panel>(&self, window: &mut Window, cx: &mut Context<Self>) {
 3259        for dock in self.all_docks().iter() {
 3260            dock.update(cx, |dock, cx| {
 3261                if dock.panel::<T>().is_some() {
 3262                    dock.set_open(false, window, cx)
 3263                }
 3264            })
 3265        }
 3266    }
 3267
 3268    pub fn panel<T: Panel>(&self, cx: &App) -> Option<Entity<T>> {
 3269        self.all_docks()
 3270            .iter()
 3271            .find_map(|dock| dock.read(cx).panel::<T>())
 3272    }
 3273
 3274    fn dismiss_zoomed_items_to_reveal(
 3275        &mut self,
 3276        dock_to_reveal: Option<DockPosition>,
 3277        window: &mut Window,
 3278        cx: &mut Context<Self>,
 3279    ) {
 3280        // If a center pane is zoomed, unzoom it.
 3281        for pane in &self.panes {
 3282            if pane != &self.active_pane || dock_to_reveal.is_some() {
 3283                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 3284            }
 3285        }
 3286
 3287        // If another dock is zoomed, hide it.
 3288        let mut focus_center = false;
 3289        for dock in self.all_docks() {
 3290            dock.update(cx, |dock, cx| {
 3291                if Some(dock.position()) != dock_to_reveal
 3292                    && let Some(panel) = dock.active_panel()
 3293                    && panel.is_zoomed(window, cx)
 3294                {
 3295                    focus_center |= panel.panel_focus_handle(cx).contains_focused(window, cx);
 3296                    dock.set_open(false, window, cx);
 3297                }
 3298            });
 3299        }
 3300
 3301        if focus_center {
 3302            self.active_pane
 3303                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3304        }
 3305
 3306        if self.zoomed_position != dock_to_reveal {
 3307            self.zoomed = None;
 3308            self.zoomed_position = None;
 3309            cx.emit(Event::ZoomChanged);
 3310        }
 3311
 3312        cx.notify();
 3313    }
 3314
 3315    fn add_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 3316        let pane = cx.new(|cx| {
 3317            let mut pane = Pane::new(
 3318                self.weak_handle(),
 3319                self.project.clone(),
 3320                self.pane_history_timestamp.clone(),
 3321                None,
 3322                NewFile.boxed_clone(),
 3323                true,
 3324                window,
 3325                cx,
 3326            );
 3327            pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 3328            pane
 3329        });
 3330        cx.subscribe_in(&pane, window, Self::handle_pane_event)
 3331            .detach();
 3332        self.panes.push(pane.clone());
 3333
 3334        window.focus(&pane.focus_handle(cx));
 3335
 3336        cx.emit(Event::PaneAdded(pane.clone()));
 3337        pane
 3338    }
 3339
 3340    pub fn add_item_to_center(
 3341        &mut self,
 3342        item: Box<dyn ItemHandle>,
 3343        window: &mut Window,
 3344        cx: &mut Context<Self>,
 3345    ) -> bool {
 3346        if let Some(center_pane) = self.last_active_center_pane.clone() {
 3347            if let Some(center_pane) = center_pane.upgrade() {
 3348                center_pane.update(cx, |pane, cx| {
 3349                    pane.add_item(item, true, true, None, window, cx)
 3350                });
 3351                true
 3352            } else {
 3353                false
 3354            }
 3355        } else {
 3356            false
 3357        }
 3358    }
 3359
 3360    pub fn add_item_to_active_pane(
 3361        &mut self,
 3362        item: Box<dyn ItemHandle>,
 3363        destination_index: Option<usize>,
 3364        focus_item: bool,
 3365        window: &mut Window,
 3366        cx: &mut App,
 3367    ) {
 3368        self.add_item(
 3369            self.active_pane.clone(),
 3370            item,
 3371            destination_index,
 3372            false,
 3373            focus_item,
 3374            window,
 3375            cx,
 3376        )
 3377    }
 3378
 3379    pub fn add_item(
 3380        &mut self,
 3381        pane: Entity<Pane>,
 3382        item: Box<dyn ItemHandle>,
 3383        destination_index: Option<usize>,
 3384        activate_pane: bool,
 3385        focus_item: bool,
 3386        window: &mut Window,
 3387        cx: &mut App,
 3388    ) {
 3389        pane.update(cx, |pane, cx| {
 3390            pane.add_item(
 3391                item,
 3392                activate_pane,
 3393                focus_item,
 3394                destination_index,
 3395                window,
 3396                cx,
 3397            )
 3398        });
 3399    }
 3400
 3401    pub fn split_item(
 3402        &mut self,
 3403        split_direction: SplitDirection,
 3404        item: Box<dyn ItemHandle>,
 3405        window: &mut Window,
 3406        cx: &mut Context<Self>,
 3407    ) {
 3408        let new_pane = self.split_pane(self.active_pane.clone(), split_direction, window, cx);
 3409        self.add_item(new_pane, item, None, true, true, window, cx);
 3410    }
 3411
 3412    pub fn open_abs_path(
 3413        &mut self,
 3414        abs_path: PathBuf,
 3415        options: OpenOptions,
 3416        window: &mut Window,
 3417        cx: &mut Context<Self>,
 3418    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3419        println!("{:?}", *self.encoding.lock().unwrap());
 3420        cx.spawn_in(window, async move |workspace, cx| {
 3421            let open_paths_task_result = workspace
 3422                .update_in(cx, |workspace, window, cx| {
 3423                    workspace.open_paths(vec![abs_path.clone()], options, None, window, cx)
 3424                })
 3425                .with_context(|| format!("open abs path {abs_path:?} task spawn"))?
 3426                .await;
 3427            anyhow::ensure!(
 3428                open_paths_task_result.len() == 1,
 3429                "open abs path {abs_path:?} task returned incorrect number of results"
 3430            );
 3431            match open_paths_task_result
 3432                .into_iter()
 3433                .next()
 3434                .expect("ensured single task result")
 3435            {
 3436                Some(open_result) => {
 3437                    open_result.with_context(|| format!("open abs path {abs_path:?} task join"))
 3438                }
 3439                None => anyhow::bail!("open abs path {abs_path:?} task returned None"),
 3440            }
 3441        })
 3442    }
 3443
 3444    pub fn split_abs_path(
 3445        &mut self,
 3446        abs_path: PathBuf,
 3447        visible: bool,
 3448        window: &mut Window,
 3449        cx: &mut Context<Self>,
 3450    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3451        let project_path_task =
 3452            Workspace::project_path_for_path(self.project.clone(), &abs_path, visible, cx);
 3453        cx.spawn_in(window, async move |this, cx| {
 3454            let (_, path) = project_path_task.await?;
 3455            this.update_in(cx, |this, window, cx| this.split_path(path, window, cx))?
 3456                .await
 3457        })
 3458    }
 3459
 3460    pub fn open_path(
 3461        &mut self,
 3462        path: impl Into<ProjectPath>,
 3463        pane: Option<WeakEntity<Pane>>,
 3464        focus_item: bool,
 3465        window: &mut Window,
 3466        cx: &mut App,
 3467    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3468        self.open_path_preview(path, pane, focus_item, false, true, window, cx)
 3469    }
 3470
 3471    pub fn open_path_preview(
 3472        &mut self,
 3473        path: impl Into<ProjectPath>,
 3474        pane: Option<WeakEntity<Pane>>,
 3475        focus_item: bool,
 3476        allow_preview: bool,
 3477        activate: bool,
 3478        window: &mut Window,
 3479        cx: &mut App,
 3480    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3481        let pane = pane.unwrap_or_else(|| {
 3482            self.last_active_center_pane.clone().unwrap_or_else(|| {
 3483                self.panes
 3484                    .first()
 3485                    .expect("There must be an active pane")
 3486                    .downgrade()
 3487            })
 3488        });
 3489
 3490        let project_path = path.into();
 3491        let task = self.load_path(project_path.clone(), window, cx);
 3492        window.spawn(cx, async move |cx| {
 3493            let (project_entry_id, build_item) = task.await?;
 3494
 3495            pane.update_in(cx, |pane, window, cx| {
 3496                pane.open_item(
 3497                    project_entry_id,
 3498                    project_path,
 3499                    focus_item,
 3500                    allow_preview,
 3501                    activate,
 3502                    None,
 3503                    window,
 3504                    cx,
 3505                    build_item,
 3506                )
 3507            })
 3508        })
 3509    }
 3510
 3511    pub fn split_path(
 3512        &mut self,
 3513        path: impl Into<ProjectPath>,
 3514        window: &mut Window,
 3515        cx: &mut Context<Self>,
 3516    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3517        self.split_path_preview(path, false, None, window, cx)
 3518    }
 3519
 3520    pub fn split_path_preview(
 3521        &mut self,
 3522        path: impl Into<ProjectPath>,
 3523        allow_preview: bool,
 3524        split_direction: Option<SplitDirection>,
 3525        window: &mut Window,
 3526        cx: &mut Context<Self>,
 3527    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3528        let pane = self.last_active_center_pane.clone().unwrap_or_else(|| {
 3529            self.panes
 3530                .first()
 3531                .expect("There must be an active pane")
 3532                .downgrade()
 3533        });
 3534
 3535        if let Member::Pane(center_pane) = &self.center.root
 3536            && center_pane.read(cx).items_len() == 0
 3537        {
 3538            return self.open_path(path, Some(pane), true, window, cx);
 3539        }
 3540
 3541        let project_path = path.into();
 3542        let task = self.load_path(project_path.clone(), window, cx);
 3543        cx.spawn_in(window, async move |this, cx| {
 3544            let (project_entry_id, build_item) = task.await?;
 3545            this.update_in(cx, move |this, window, cx| -> Option<_> {
 3546                let pane = pane.upgrade()?;
 3547                let new_pane = this.split_pane(
 3548                    pane,
 3549                    split_direction.unwrap_or(SplitDirection::Right),
 3550                    window,
 3551                    cx,
 3552                );
 3553                new_pane.update(cx, |new_pane, cx| {
 3554                    Some(new_pane.open_item(
 3555                        project_entry_id,
 3556                        project_path,
 3557                        true,
 3558                        allow_preview,
 3559                        true,
 3560                        None,
 3561                        window,
 3562                        cx,
 3563                        build_item,
 3564                    ))
 3565                })
 3566            })
 3567            .map(|option| option.context("pane was dropped"))?
 3568        })
 3569    }
 3570
 3571    fn load_path(
 3572        &mut self,
 3573        path: ProjectPath,
 3574        window: &mut Window,
 3575        cx: &mut App,
 3576    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
 3577        let registry = cx.default_global::<ProjectItemRegistry>().clone();
 3578        registry.open_path(
 3579            self.project(),
 3580            &path,
 3581            Some(EncodingWrapper::new(*self.encoding.lock().unwrap())),
 3582            window,
 3583            cx,
 3584        )
 3585    }
 3586
 3587    pub fn find_project_item<T>(
 3588        &self,
 3589        pane: &Entity<Pane>,
 3590        project_item: &Entity<T::Item>,
 3591        cx: &App,
 3592    ) -> Option<Entity<T>>
 3593    where
 3594        T: ProjectItem,
 3595    {
 3596        use project::ProjectItem as _;
 3597        let project_item = project_item.read(cx);
 3598        let entry_id = project_item.entry_id(cx);
 3599        let project_path = project_item.project_path(cx);
 3600
 3601        let mut item = None;
 3602        if let Some(entry_id) = entry_id {
 3603            item = pane.read(cx).item_for_entry(entry_id, cx);
 3604        }
 3605        if item.is_none()
 3606            && let Some(project_path) = project_path
 3607        {
 3608            item = pane.read(cx).item_for_path(project_path, cx);
 3609        }
 3610
 3611        item.and_then(|item| item.downcast::<T>())
 3612    }
 3613
 3614    pub fn is_project_item_open<T>(
 3615        &self,
 3616        pane: &Entity<Pane>,
 3617        project_item: &Entity<T::Item>,
 3618        cx: &App,
 3619    ) -> bool
 3620    where
 3621        T: ProjectItem,
 3622    {
 3623        self.find_project_item::<T>(pane, project_item, cx)
 3624            .is_some()
 3625    }
 3626
 3627    pub fn open_project_item<T>(
 3628        &mut self,
 3629        pane: Entity<Pane>,
 3630        project_item: Entity<T::Item>,
 3631        activate_pane: bool,
 3632        focus_item: bool,
 3633        window: &mut Window,
 3634        cx: &mut Context<Self>,
 3635    ) -> Entity<T>
 3636    where
 3637        T: ProjectItem,
 3638    {
 3639        if let Some(item) = self.find_project_item(&pane, &project_item, cx) {
 3640            self.activate_item(&item, activate_pane, focus_item, window, cx);
 3641            return item;
 3642        }
 3643
 3644        let item = pane.update(cx, |pane, cx| {
 3645            cx.new(|cx| {
 3646                T::for_project_item(self.project().clone(), Some(pane), project_item, window, cx)
 3647            })
 3648        });
 3649        let item_id = item.item_id();
 3650        let mut destination_index = None;
 3651        pane.update(cx, |pane, cx| {
 3652            if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation
 3653                && let Some(preview_item_id) = pane.preview_item_id()
 3654                && preview_item_id != item_id
 3655            {
 3656                destination_index = pane.close_current_preview_item(window, cx);
 3657            }
 3658            pane.set_preview_item_id(Some(item.item_id()), cx)
 3659        });
 3660
 3661        self.add_item(
 3662            pane,
 3663            Box::new(item.clone()),
 3664            destination_index,
 3665            activate_pane,
 3666            focus_item,
 3667            window,
 3668            cx,
 3669        );
 3670        item
 3671    }
 3672
 3673    pub fn open_shared_screen(
 3674        &mut self,
 3675        peer_id: PeerId,
 3676        window: &mut Window,
 3677        cx: &mut Context<Self>,
 3678    ) {
 3679        if let Some(shared_screen) =
 3680            self.shared_screen_for_peer(peer_id, &self.active_pane, window, cx)
 3681        {
 3682            self.active_pane.update(cx, |pane, cx| {
 3683                pane.add_item(Box::new(shared_screen), false, true, None, window, cx)
 3684            });
 3685        }
 3686    }
 3687
 3688    pub fn activate_item(
 3689        &mut self,
 3690        item: &dyn ItemHandle,
 3691        activate_pane: bool,
 3692        focus_item: bool,
 3693        window: &mut Window,
 3694        cx: &mut App,
 3695    ) -> bool {
 3696        let result = self.panes.iter().find_map(|pane| {
 3697            pane.read(cx)
 3698                .index_for_item(item)
 3699                .map(|ix| (pane.clone(), ix))
 3700        });
 3701        if let Some((pane, ix)) = result {
 3702            pane.update(cx, |pane, cx| {
 3703                pane.activate_item(ix, activate_pane, focus_item, window, cx)
 3704            });
 3705            true
 3706        } else {
 3707            false
 3708        }
 3709    }
 3710
 3711    fn activate_pane_at_index(
 3712        &mut self,
 3713        action: &ActivatePane,
 3714        window: &mut Window,
 3715        cx: &mut Context<Self>,
 3716    ) {
 3717        let panes = self.center.panes();
 3718        if let Some(pane) = panes.get(action.0).map(|p| (*p).clone()) {
 3719            window.focus(&pane.focus_handle(cx));
 3720        } else {
 3721            self.split_and_clone(self.active_pane.clone(), SplitDirection::Right, window, cx)
 3722                .detach();
 3723        }
 3724    }
 3725
 3726    fn move_item_to_pane_at_index(
 3727        &mut self,
 3728        action: &MoveItemToPane,
 3729        window: &mut Window,
 3730        cx: &mut Context<Self>,
 3731    ) {
 3732        let panes = self.center.panes();
 3733        let destination = match panes.get(action.destination) {
 3734            Some(&destination) => destination.clone(),
 3735            None => {
 3736                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3737                    return;
 3738                }
 3739                let direction = SplitDirection::Right;
 3740                let split_off_pane = self
 3741                    .find_pane_in_direction(direction, cx)
 3742                    .unwrap_or_else(|| self.active_pane.clone());
 3743                let new_pane = self.add_pane(window, cx);
 3744                if self
 3745                    .center
 3746                    .split(&split_off_pane, &new_pane, direction)
 3747                    .log_err()
 3748                    .is_none()
 3749                {
 3750                    return;
 3751                };
 3752                new_pane
 3753            }
 3754        };
 3755
 3756        if action.clone {
 3757            if self
 3758                .active_pane
 3759                .read(cx)
 3760                .active_item()
 3761                .is_some_and(|item| item.can_split(cx))
 3762            {
 3763                clone_active_item(
 3764                    self.database_id(),
 3765                    &self.active_pane,
 3766                    &destination,
 3767                    action.focus,
 3768                    window,
 3769                    cx,
 3770                );
 3771                return;
 3772            }
 3773        }
 3774        move_active_item(
 3775            &self.active_pane,
 3776            &destination,
 3777            action.focus,
 3778            true,
 3779            window,
 3780            cx,
 3781        )
 3782    }
 3783
 3784    pub fn activate_next_pane(&mut self, window: &mut Window, cx: &mut App) {
 3785        let panes = self.center.panes();
 3786        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3787            let next_ix = (ix + 1) % panes.len();
 3788            let next_pane = panes[next_ix].clone();
 3789            window.focus(&next_pane.focus_handle(cx));
 3790        }
 3791    }
 3792
 3793    pub fn activate_previous_pane(&mut self, window: &mut Window, cx: &mut App) {
 3794        let panes = self.center.panes();
 3795        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3796            let prev_ix = cmp::min(ix.wrapping_sub(1), panes.len() - 1);
 3797            let prev_pane = panes[prev_ix].clone();
 3798            window.focus(&prev_pane.focus_handle(cx));
 3799        }
 3800    }
 3801
 3802    pub fn activate_pane_in_direction(
 3803        &mut self,
 3804        direction: SplitDirection,
 3805        window: &mut Window,
 3806        cx: &mut App,
 3807    ) {
 3808        use ActivateInDirectionTarget as Target;
 3809        enum Origin {
 3810            LeftDock,
 3811            RightDock,
 3812            BottomDock,
 3813            Center,
 3814        }
 3815
 3816        let origin: Origin = [
 3817            (&self.left_dock, Origin::LeftDock),
 3818            (&self.right_dock, Origin::RightDock),
 3819            (&self.bottom_dock, Origin::BottomDock),
 3820        ]
 3821        .into_iter()
 3822        .find_map(|(dock, origin)| {
 3823            if dock.focus_handle(cx).contains_focused(window, cx) && dock.read(cx).is_open() {
 3824                Some(origin)
 3825            } else {
 3826                None
 3827            }
 3828        })
 3829        .unwrap_or(Origin::Center);
 3830
 3831        let get_last_active_pane = || {
 3832            let pane = self
 3833                .last_active_center_pane
 3834                .clone()
 3835                .unwrap_or_else(|| {
 3836                    self.panes
 3837                        .first()
 3838                        .expect("There must be an active pane")
 3839                        .downgrade()
 3840                })
 3841                .upgrade()?;
 3842            (pane.read(cx).items_len() != 0).then_some(pane)
 3843        };
 3844
 3845        let try_dock =
 3846            |dock: &Entity<Dock>| dock.read(cx).is_open().then(|| Target::Dock(dock.clone()));
 3847
 3848        let target = match (origin, direction) {
 3849            // We're in the center, so we first try to go to a different pane,
 3850            // otherwise try to go to a dock.
 3851            (Origin::Center, direction) => {
 3852                if let Some(pane) = self.find_pane_in_direction(direction, cx) {
 3853                    Some(Target::Pane(pane))
 3854                } else {
 3855                    match direction {
 3856                        SplitDirection::Up => None,
 3857                        SplitDirection::Down => try_dock(&self.bottom_dock),
 3858                        SplitDirection::Left => try_dock(&self.left_dock),
 3859                        SplitDirection::Right => try_dock(&self.right_dock),
 3860                    }
 3861                }
 3862            }
 3863
 3864            (Origin::LeftDock, SplitDirection::Right) => {
 3865                if let Some(last_active_pane) = get_last_active_pane() {
 3866                    Some(Target::Pane(last_active_pane))
 3867                } else {
 3868                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.right_dock))
 3869                }
 3870            }
 3871
 3872            (Origin::LeftDock, SplitDirection::Down)
 3873            | (Origin::RightDock, SplitDirection::Down) => try_dock(&self.bottom_dock),
 3874
 3875            (Origin::BottomDock, SplitDirection::Up) => get_last_active_pane().map(Target::Pane),
 3876            (Origin::BottomDock, SplitDirection::Left) => try_dock(&self.left_dock),
 3877            (Origin::BottomDock, SplitDirection::Right) => try_dock(&self.right_dock),
 3878
 3879            (Origin::RightDock, SplitDirection::Left) => {
 3880                if let Some(last_active_pane) = get_last_active_pane() {
 3881                    Some(Target::Pane(last_active_pane))
 3882                } else {
 3883                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.left_dock))
 3884                }
 3885            }
 3886
 3887            _ => None,
 3888        };
 3889
 3890        match target {
 3891            Some(ActivateInDirectionTarget::Pane(pane)) => {
 3892                let pane = pane.read(cx);
 3893                if let Some(item) = pane.active_item() {
 3894                    item.item_focus_handle(cx).focus(window);
 3895                } else {
 3896                    log::error!(
 3897                        "Could not find a focus target when in switching focus in {direction} direction for a pane",
 3898                    );
 3899                }
 3900            }
 3901            Some(ActivateInDirectionTarget::Dock(dock)) => {
 3902                // Defer this to avoid a panic when the dock's active panel is already on the stack.
 3903                window.defer(cx, move |window, cx| {
 3904                    let dock = dock.read(cx);
 3905                    if let Some(panel) = dock.active_panel() {
 3906                        panel.panel_focus_handle(cx).focus(window);
 3907                    } else {
 3908                        log::error!("Could not find a focus target when in switching focus in {direction} direction for a {:?} dock", dock.position());
 3909                    }
 3910                })
 3911            }
 3912            None => {}
 3913        }
 3914    }
 3915
 3916    pub fn move_item_to_pane_in_direction(
 3917        &mut self,
 3918        action: &MoveItemToPaneInDirection,
 3919        window: &mut Window,
 3920        cx: &mut Context<Self>,
 3921    ) {
 3922        let destination = match self.find_pane_in_direction(action.direction, cx) {
 3923            Some(destination) => destination,
 3924            None => {
 3925                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3926                    return;
 3927                }
 3928                let new_pane = self.add_pane(window, cx);
 3929                if self
 3930                    .center
 3931                    .split(&self.active_pane, &new_pane, action.direction)
 3932                    .log_err()
 3933                    .is_none()
 3934                {
 3935                    return;
 3936                };
 3937                new_pane
 3938            }
 3939        };
 3940
 3941        if action.clone {
 3942            if self
 3943                .active_pane
 3944                .read(cx)
 3945                .active_item()
 3946                .is_some_and(|item| item.can_split(cx))
 3947            {
 3948                clone_active_item(
 3949                    self.database_id(),
 3950                    &self.active_pane,
 3951                    &destination,
 3952                    action.focus,
 3953                    window,
 3954                    cx,
 3955                );
 3956                return;
 3957            }
 3958        }
 3959        move_active_item(
 3960            &self.active_pane,
 3961            &destination,
 3962            action.focus,
 3963            true,
 3964            window,
 3965            cx,
 3966        );
 3967    }
 3968
 3969    pub fn bounding_box_for_pane(&self, pane: &Entity<Pane>) -> Option<Bounds<Pixels>> {
 3970        self.center.bounding_box_for_pane(pane)
 3971    }
 3972
 3973    pub fn find_pane_in_direction(
 3974        &mut self,
 3975        direction: SplitDirection,
 3976        cx: &App,
 3977    ) -> Option<Entity<Pane>> {
 3978        self.center
 3979            .find_pane_in_direction(&self.active_pane, direction, cx)
 3980            .cloned()
 3981    }
 3982
 3983    pub fn swap_pane_in_direction(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 3984        if let Some(to) = self.find_pane_in_direction(direction, cx) {
 3985            self.center.swap(&self.active_pane, &to);
 3986            cx.notify();
 3987        }
 3988    }
 3989
 3990    pub fn move_pane_to_border(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 3991        if self
 3992            .center
 3993            .move_to_border(&self.active_pane, direction)
 3994            .unwrap()
 3995        {
 3996            cx.notify();
 3997        }
 3998    }
 3999
 4000    pub fn resize_pane(
 4001        &mut self,
 4002        axis: gpui::Axis,
 4003        amount: Pixels,
 4004        window: &mut Window,
 4005        cx: &mut Context<Self>,
 4006    ) {
 4007        let docks = self.all_docks();
 4008        let active_dock = docks
 4009            .into_iter()
 4010            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 4011
 4012        if let Some(dock) = active_dock {
 4013            let Some(panel_size) = dock.read(cx).active_panel_size(window, cx) else {
 4014                return;
 4015            };
 4016            match dock.read(cx).position() {
 4017                DockPosition::Left => self.resize_left_dock(panel_size + amount, window, cx),
 4018                DockPosition::Bottom => self.resize_bottom_dock(panel_size + amount, window, cx),
 4019                DockPosition::Right => self.resize_right_dock(panel_size + amount, window, cx),
 4020            }
 4021        } else {
 4022            self.center
 4023                .resize(&self.active_pane, axis, amount, &self.bounds);
 4024        }
 4025        cx.notify();
 4026    }
 4027
 4028    pub fn reset_pane_sizes(&mut self, cx: &mut Context<Self>) {
 4029        self.center.reset_pane_sizes();
 4030        cx.notify();
 4031    }
 4032
 4033    fn handle_pane_focused(
 4034        &mut self,
 4035        pane: Entity<Pane>,
 4036        window: &mut Window,
 4037        cx: &mut Context<Self>,
 4038    ) {
 4039        // This is explicitly hoisted out of the following check for pane identity as
 4040        // terminal panel panes are not registered as a center panes.
 4041        self.status_bar.update(cx, |status_bar, cx| {
 4042            status_bar.set_active_pane(&pane, window, cx);
 4043        });
 4044        if self.active_pane != pane {
 4045            self.set_active_pane(&pane, window, cx);
 4046        }
 4047
 4048        if self.last_active_center_pane.is_none() {
 4049            self.last_active_center_pane = Some(pane.downgrade());
 4050        }
 4051
 4052        self.dismiss_zoomed_items_to_reveal(None, window, cx);
 4053        if pane.read(cx).is_zoomed() {
 4054            self.zoomed = Some(pane.downgrade().into());
 4055        } else {
 4056            self.zoomed = None;
 4057        }
 4058        self.zoomed_position = None;
 4059        cx.emit(Event::ZoomChanged);
 4060        self.update_active_view_for_followers(window, cx);
 4061        pane.update(cx, |pane, _| {
 4062            pane.track_alternate_file_items();
 4063        });
 4064
 4065        cx.notify();
 4066    }
 4067
 4068    fn set_active_pane(
 4069        &mut self,
 4070        pane: &Entity<Pane>,
 4071        window: &mut Window,
 4072        cx: &mut Context<Self>,
 4073    ) {
 4074        self.active_pane = pane.clone();
 4075        self.active_item_path_changed(window, cx);
 4076        self.last_active_center_pane = Some(pane.downgrade());
 4077    }
 4078
 4079    fn handle_panel_focused(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4080        self.update_active_view_for_followers(window, cx);
 4081    }
 4082
 4083    fn handle_pane_event(
 4084        &mut self,
 4085        pane: &Entity<Pane>,
 4086        event: &pane::Event,
 4087        window: &mut Window,
 4088        cx: &mut Context<Self>,
 4089    ) {
 4090        let mut serialize_workspace = true;
 4091        match event {
 4092            pane::Event::AddItem { item } => {
 4093                item.added_to_pane(self, pane.clone(), window, cx);
 4094                cx.emit(Event::ItemAdded {
 4095                    item: item.boxed_clone(),
 4096                });
 4097            }
 4098            pane::Event::Split {
 4099                direction,
 4100                clone_active_item,
 4101            } => {
 4102                if *clone_active_item {
 4103                    self.split_and_clone(pane.clone(), *direction, window, cx)
 4104                        .detach();
 4105                } else {
 4106                    self.split_and_move(pane.clone(), *direction, window, cx);
 4107                }
 4108            }
 4109            pane::Event::JoinIntoNext => {
 4110                self.join_pane_into_next(pane.clone(), window, cx);
 4111            }
 4112            pane::Event::JoinAll => {
 4113                self.join_all_panes(window, cx);
 4114            }
 4115            pane::Event::Remove { focus_on_pane } => {
 4116                self.remove_pane(pane.clone(), focus_on_pane.clone(), window, cx);
 4117            }
 4118            pane::Event::ActivateItem {
 4119                local,
 4120                focus_changed,
 4121            } => {
 4122                window.invalidate_character_coordinates();
 4123
 4124                pane.update(cx, |pane, _| {
 4125                    pane.track_alternate_file_items();
 4126                });
 4127                if *local {
 4128                    self.unfollow_in_pane(pane, window, cx);
 4129                }
 4130                serialize_workspace = *focus_changed || pane != self.active_pane();
 4131                if pane == self.active_pane() {
 4132                    self.active_item_path_changed(window, cx);
 4133                    self.update_active_view_for_followers(window, cx);
 4134                } else if *local {
 4135                    self.set_active_pane(pane, window, cx);
 4136                }
 4137            }
 4138            pane::Event::UserSavedItem { item, save_intent } => {
 4139                cx.emit(Event::UserSavedItem {
 4140                    pane: pane.downgrade(),
 4141                    item: item.boxed_clone(),
 4142                    save_intent: *save_intent,
 4143                });
 4144                serialize_workspace = false;
 4145            }
 4146            pane::Event::ChangeItemTitle => {
 4147                if *pane == self.active_pane {
 4148                    self.active_item_path_changed(window, cx);
 4149                }
 4150                serialize_workspace = false;
 4151            }
 4152            pane::Event::RemovedItem { item } => {
 4153                cx.emit(Event::ActiveItemChanged);
 4154                self.update_window_edited(window, cx);
 4155                if let hash_map::Entry::Occupied(entry) = self.panes_by_item.entry(item.item_id())
 4156                    && entry.get().entity_id() == pane.entity_id()
 4157                {
 4158                    entry.remove();
 4159                }
 4160                cx.emit(Event::ItemRemoved {
 4161                    item_id: item.item_id(),
 4162                });
 4163            }
 4164            pane::Event::Focus => {
 4165                window.invalidate_character_coordinates();
 4166                self.handle_pane_focused(pane.clone(), window, cx);
 4167            }
 4168            pane::Event::ZoomIn => {
 4169                if *pane == self.active_pane {
 4170                    pane.update(cx, |pane, cx| pane.set_zoomed(true, cx));
 4171                    if pane.read(cx).has_focus(window, cx) {
 4172                        self.zoomed = Some(pane.downgrade().into());
 4173                        self.zoomed_position = None;
 4174                        cx.emit(Event::ZoomChanged);
 4175                    }
 4176                    cx.notify();
 4177                }
 4178            }
 4179            pane::Event::ZoomOut => {
 4180                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 4181                if self.zoomed_position.is_none() {
 4182                    self.zoomed = None;
 4183                    cx.emit(Event::ZoomChanged);
 4184                }
 4185                cx.notify();
 4186            }
 4187            pane::Event::ItemPinned | pane::Event::ItemUnpinned => {}
 4188        }
 4189
 4190        if serialize_workspace {
 4191            self.serialize_workspace(window, cx);
 4192        }
 4193    }
 4194
 4195    pub fn unfollow_in_pane(
 4196        &mut self,
 4197        pane: &Entity<Pane>,
 4198        window: &mut Window,
 4199        cx: &mut Context<Workspace>,
 4200    ) -> Option<CollaboratorId> {
 4201        let leader_id = self.leader_for_pane(pane)?;
 4202        self.unfollow(leader_id, window, cx);
 4203        Some(leader_id)
 4204    }
 4205
 4206    pub fn split_pane(
 4207        &mut self,
 4208        pane_to_split: Entity<Pane>,
 4209        split_direction: SplitDirection,
 4210        window: &mut Window,
 4211        cx: &mut Context<Self>,
 4212    ) -> Entity<Pane> {
 4213        let new_pane = self.add_pane(window, cx);
 4214        self.center
 4215            .split(&pane_to_split, &new_pane, split_direction)
 4216            .unwrap();
 4217        cx.notify();
 4218        new_pane
 4219    }
 4220
 4221    pub fn split_and_move(
 4222        &mut self,
 4223        pane: Entity<Pane>,
 4224        direction: SplitDirection,
 4225        window: &mut Window,
 4226        cx: &mut Context<Self>,
 4227    ) {
 4228        let Some(item) = pane.update(cx, |pane, cx| pane.take_active_item(window, cx)) else {
 4229            return;
 4230        };
 4231        let new_pane = self.add_pane(window, cx);
 4232        new_pane.update(cx, |pane, cx| {
 4233            pane.add_item(item, true, true, None, window, cx)
 4234        });
 4235        self.center.split(&pane, &new_pane, direction).unwrap();
 4236        cx.notify();
 4237    }
 4238
 4239    pub fn split_and_clone(
 4240        &mut self,
 4241        pane: Entity<Pane>,
 4242        direction: SplitDirection,
 4243        window: &mut Window,
 4244        cx: &mut Context<Self>,
 4245    ) -> Task<Option<Entity<Pane>>> {
 4246        let Some(item) = pane.read(cx).active_item() else {
 4247            return Task::ready(None);
 4248        };
 4249        if !item.can_split(cx) {
 4250            return Task::ready(None);
 4251        }
 4252        let task = item.clone_on_split(self.database_id(), window, cx);
 4253        cx.spawn_in(window, async move |this, cx| {
 4254            if let Some(clone) = task.await {
 4255                this.update_in(cx, |this, window, cx| {
 4256                    let new_pane = this.add_pane(window, cx);
 4257                    new_pane.update(cx, |pane, cx| {
 4258                        pane.add_item(clone, true, true, None, window, cx)
 4259                    });
 4260                    this.center.split(&pane, &new_pane, direction).unwrap();
 4261                    cx.notify();
 4262                    new_pane
 4263                })
 4264                .ok()
 4265            } else {
 4266                None
 4267            }
 4268        })
 4269    }
 4270
 4271    pub fn join_all_panes(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4272        let active_item = self.active_pane.read(cx).active_item();
 4273        for pane in &self.panes {
 4274            join_pane_into_active(&self.active_pane, pane, window, cx);
 4275        }
 4276        if let Some(active_item) = active_item {
 4277            self.activate_item(active_item.as_ref(), true, true, window, cx);
 4278        }
 4279        cx.notify();
 4280    }
 4281
 4282    pub fn join_pane_into_next(
 4283        &mut self,
 4284        pane: Entity<Pane>,
 4285        window: &mut Window,
 4286        cx: &mut Context<Self>,
 4287    ) {
 4288        let next_pane = self
 4289            .find_pane_in_direction(SplitDirection::Right, cx)
 4290            .or_else(|| self.find_pane_in_direction(SplitDirection::Down, cx))
 4291            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4292            .or_else(|| self.find_pane_in_direction(SplitDirection::Up, cx));
 4293        let Some(next_pane) = next_pane else {
 4294            return;
 4295        };
 4296        move_all_items(&pane, &next_pane, window, cx);
 4297        cx.notify();
 4298    }
 4299
 4300    fn remove_pane(
 4301        &mut self,
 4302        pane: Entity<Pane>,
 4303        focus_on: Option<Entity<Pane>>,
 4304        window: &mut Window,
 4305        cx: &mut Context<Self>,
 4306    ) {
 4307        if self.center.remove(&pane).unwrap() {
 4308            self.force_remove_pane(&pane, &focus_on, window, cx);
 4309            self.unfollow_in_pane(&pane, window, cx);
 4310            self.last_leaders_by_pane.remove(&pane.downgrade());
 4311            for removed_item in pane.read(cx).items() {
 4312                self.panes_by_item.remove(&removed_item.item_id());
 4313            }
 4314
 4315            cx.notify();
 4316        } else {
 4317            self.active_item_path_changed(window, cx);
 4318        }
 4319        cx.emit(Event::PaneRemoved);
 4320    }
 4321
 4322    pub fn panes(&self) -> &[Entity<Pane>] {
 4323        &self.panes
 4324    }
 4325
 4326    pub fn active_pane(&self) -> &Entity<Pane> {
 4327        &self.active_pane
 4328    }
 4329
 4330    pub fn focused_pane(&self, window: &Window, cx: &App) -> Entity<Pane> {
 4331        for dock in self.all_docks() {
 4332            if dock.focus_handle(cx).contains_focused(window, cx)
 4333                && let Some(pane) = dock
 4334                    .read(cx)
 4335                    .active_panel()
 4336                    .and_then(|panel| panel.pane(cx))
 4337            {
 4338                return pane;
 4339            }
 4340        }
 4341        self.active_pane().clone()
 4342    }
 4343
 4344    pub fn adjacent_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 4345        self.find_pane_in_direction(SplitDirection::Right, cx)
 4346            .unwrap_or_else(|| {
 4347                self.split_pane(self.active_pane.clone(), SplitDirection::Right, window, cx)
 4348            })
 4349    }
 4350
 4351    pub fn pane_for(&self, handle: &dyn ItemHandle) -> Option<Entity<Pane>> {
 4352        let weak_pane = self.panes_by_item.get(&handle.item_id())?;
 4353        weak_pane.upgrade()
 4354    }
 4355
 4356    fn collaborator_left(&mut self, peer_id: PeerId, window: &mut Window, cx: &mut Context<Self>) {
 4357        self.follower_states.retain(|leader_id, state| {
 4358            if *leader_id == CollaboratorId::PeerId(peer_id) {
 4359                for item in state.items_by_leader_view_id.values() {
 4360                    item.view.set_leader_id(None, window, cx);
 4361                }
 4362                false
 4363            } else {
 4364                true
 4365            }
 4366        });
 4367        cx.notify();
 4368    }
 4369
 4370    pub fn start_following(
 4371        &mut self,
 4372        leader_id: impl Into<CollaboratorId>,
 4373        window: &mut Window,
 4374        cx: &mut Context<Self>,
 4375    ) -> Option<Task<Result<()>>> {
 4376        let leader_id = leader_id.into();
 4377        let pane = self.active_pane().clone();
 4378
 4379        self.last_leaders_by_pane
 4380            .insert(pane.downgrade(), leader_id);
 4381        self.unfollow(leader_id, window, cx);
 4382        self.unfollow_in_pane(&pane, window, cx);
 4383        self.follower_states.insert(
 4384            leader_id,
 4385            FollowerState {
 4386                center_pane: pane.clone(),
 4387                dock_pane: None,
 4388                active_view_id: None,
 4389                items_by_leader_view_id: Default::default(),
 4390            },
 4391        );
 4392        cx.notify();
 4393
 4394        match leader_id {
 4395            CollaboratorId::PeerId(leader_peer_id) => {
 4396                let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4397                let project_id = self.project.read(cx).remote_id();
 4398                let request = self.app_state.client.request(proto::Follow {
 4399                    room_id,
 4400                    project_id,
 4401                    leader_id: Some(leader_peer_id),
 4402                });
 4403
 4404                Some(cx.spawn_in(window, async move |this, cx| {
 4405                    let response = request.await?;
 4406                    this.update(cx, |this, _| {
 4407                        let state = this
 4408                            .follower_states
 4409                            .get_mut(&leader_id)
 4410                            .context("following interrupted")?;
 4411                        state.active_view_id = response
 4412                            .active_view
 4413                            .as_ref()
 4414                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4415                        anyhow::Ok(())
 4416                    })??;
 4417                    if let Some(view) = response.active_view {
 4418                        Self::add_view_from_leader(this.clone(), leader_peer_id, &view, cx).await?;
 4419                    }
 4420                    this.update_in(cx, |this, window, cx| {
 4421                        this.leader_updated(leader_id, window, cx)
 4422                    })?;
 4423                    Ok(())
 4424                }))
 4425            }
 4426            CollaboratorId::Agent => {
 4427                self.leader_updated(leader_id, window, cx)?;
 4428                Some(Task::ready(Ok(())))
 4429            }
 4430        }
 4431    }
 4432
 4433    pub fn follow_next_collaborator(
 4434        &mut self,
 4435        _: &FollowNextCollaborator,
 4436        window: &mut Window,
 4437        cx: &mut Context<Self>,
 4438    ) {
 4439        let collaborators = self.project.read(cx).collaborators();
 4440        let next_leader_id = if let Some(leader_id) = self.leader_for_pane(&self.active_pane) {
 4441            let mut collaborators = collaborators.keys().copied();
 4442            for peer_id in collaborators.by_ref() {
 4443                if CollaboratorId::PeerId(peer_id) == leader_id {
 4444                    break;
 4445                }
 4446            }
 4447            collaborators.next().map(CollaboratorId::PeerId)
 4448        } else if let Some(last_leader_id) =
 4449            self.last_leaders_by_pane.get(&self.active_pane.downgrade())
 4450        {
 4451            match last_leader_id {
 4452                CollaboratorId::PeerId(peer_id) => {
 4453                    if collaborators.contains_key(peer_id) {
 4454                        Some(*last_leader_id)
 4455                    } else {
 4456                        None
 4457                    }
 4458                }
 4459                CollaboratorId::Agent => Some(CollaboratorId::Agent),
 4460            }
 4461        } else {
 4462            None
 4463        };
 4464
 4465        let pane = self.active_pane.clone();
 4466        let Some(leader_id) = next_leader_id.or_else(|| {
 4467            Some(CollaboratorId::PeerId(
 4468                collaborators.keys().copied().next()?,
 4469            ))
 4470        }) else {
 4471            return;
 4472        };
 4473        if self.unfollow_in_pane(&pane, window, cx) == Some(leader_id) {
 4474            return;
 4475        }
 4476        if let Some(task) = self.start_following(leader_id, window, cx) {
 4477            task.detach_and_log_err(cx)
 4478        }
 4479    }
 4480
 4481    pub fn follow(
 4482        &mut self,
 4483        leader_id: impl Into<CollaboratorId>,
 4484        window: &mut Window,
 4485        cx: &mut Context<Self>,
 4486    ) {
 4487        let leader_id = leader_id.into();
 4488
 4489        if let CollaboratorId::PeerId(peer_id) = leader_id {
 4490            let Some(room) = ActiveCall::global(cx).read(cx).room() else {
 4491                return;
 4492            };
 4493            let room = room.read(cx);
 4494            let Some(remote_participant) = room.remote_participant_for_peer_id(peer_id) else {
 4495                return;
 4496            };
 4497
 4498            let project = self.project.read(cx);
 4499
 4500            let other_project_id = match remote_participant.location {
 4501                call::ParticipantLocation::External => None,
 4502                call::ParticipantLocation::UnsharedProject => None,
 4503                call::ParticipantLocation::SharedProject { project_id } => {
 4504                    if Some(project_id) == project.remote_id() {
 4505                        None
 4506                    } else {
 4507                        Some(project_id)
 4508                    }
 4509                }
 4510            };
 4511
 4512            // if they are active in another project, follow there.
 4513            if let Some(project_id) = other_project_id {
 4514                let app_state = self.app_state.clone();
 4515                crate::join_in_room_project(project_id, remote_participant.user.id, app_state, cx)
 4516                    .detach_and_log_err(cx);
 4517            }
 4518        }
 4519
 4520        // if you're already following, find the right pane and focus it.
 4521        if let Some(follower_state) = self.follower_states.get(&leader_id) {
 4522            window.focus(&follower_state.pane().focus_handle(cx));
 4523
 4524            return;
 4525        }
 4526
 4527        // Otherwise, follow.
 4528        if let Some(task) = self.start_following(leader_id, window, cx) {
 4529            task.detach_and_log_err(cx)
 4530        }
 4531    }
 4532
 4533    pub fn unfollow(
 4534        &mut self,
 4535        leader_id: impl Into<CollaboratorId>,
 4536        window: &mut Window,
 4537        cx: &mut Context<Self>,
 4538    ) -> Option<()> {
 4539        cx.notify();
 4540
 4541        let leader_id = leader_id.into();
 4542        let state = self.follower_states.remove(&leader_id)?;
 4543        for (_, item) in state.items_by_leader_view_id {
 4544            item.view.set_leader_id(None, window, cx);
 4545        }
 4546
 4547        if let CollaboratorId::PeerId(leader_peer_id) = leader_id {
 4548            let project_id = self.project.read(cx).remote_id();
 4549            let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4550            self.app_state
 4551                .client
 4552                .send(proto::Unfollow {
 4553                    room_id,
 4554                    project_id,
 4555                    leader_id: Some(leader_peer_id),
 4556                })
 4557                .log_err();
 4558        }
 4559
 4560        Some(())
 4561    }
 4562
 4563    pub fn is_being_followed(&self, id: impl Into<CollaboratorId>) -> bool {
 4564        self.follower_states.contains_key(&id.into())
 4565    }
 4566
 4567    fn active_item_path_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4568        cx.emit(Event::ActiveItemChanged);
 4569        let active_entry = self.active_project_path(cx);
 4570        self.project.update(cx, |project, cx| {
 4571            project.set_active_path(active_entry.clone(), cx)
 4572        });
 4573
 4574        if let Some(project_path) = &active_entry {
 4575            let git_store_entity = self.project.read(cx).git_store().clone();
 4576            git_store_entity.update(cx, |git_store, cx| {
 4577                git_store.set_active_repo_for_path(project_path, cx);
 4578            });
 4579        }
 4580
 4581        self.update_window_title(window, cx);
 4582    }
 4583
 4584    fn update_window_title(&mut self, window: &mut Window, cx: &mut App) {
 4585        let project = self.project().read(cx);
 4586        let mut title = String::new();
 4587
 4588        for (i, worktree) in project.visible_worktrees(cx).enumerate() {
 4589            let name = {
 4590                let settings_location = SettingsLocation {
 4591                    worktree_id: worktree.read(cx).id(),
 4592                    path: RelPath::empty(),
 4593                };
 4594
 4595                let settings = WorktreeSettings::get(Some(settings_location), cx);
 4596                match &settings.project_name {
 4597                    Some(name) => name.as_str(),
 4598                    None => worktree.read(cx).root_name_str(),
 4599                }
 4600            };
 4601            if i > 0 {
 4602                title.push_str(", ");
 4603            }
 4604            title.push_str(name);
 4605        }
 4606
 4607        if title.is_empty() {
 4608            title = "empty project".to_string();
 4609        }
 4610
 4611        if let Some(path) = self.active_item(cx).and_then(|item| item.project_path(cx)) {
 4612            let filename = path.path.file_name().or_else(|| {
 4613                Some(
 4614                    project
 4615                        .worktree_for_id(path.worktree_id, cx)?
 4616                        .read(cx)
 4617                        .root_name_str(),
 4618                )
 4619            });
 4620
 4621            if let Some(filename) = filename {
 4622                title.push_str("");
 4623                title.push_str(filename.as_ref());
 4624            }
 4625        }
 4626
 4627        if project.is_via_collab() {
 4628            title.push_str("");
 4629        } else if project.is_shared() {
 4630            title.push_str("");
 4631        }
 4632
 4633        if let Some(last_title) = self.last_window_title.as_ref()
 4634            && &title == last_title
 4635        {
 4636            return;
 4637        }
 4638        window.set_window_title(&title);
 4639        SystemWindowTabController::update_tab_title(
 4640            cx,
 4641            window.window_handle().window_id(),
 4642            SharedString::from(&title),
 4643        );
 4644        self.last_window_title = Some(title);
 4645    }
 4646
 4647    fn update_window_edited(&mut self, window: &mut Window, cx: &mut App) {
 4648        let is_edited = !self.project.read(cx).is_disconnected(cx) && !self.dirty_items.is_empty();
 4649        if is_edited != self.window_edited {
 4650            self.window_edited = is_edited;
 4651            window.set_window_edited(self.window_edited)
 4652        }
 4653    }
 4654
 4655    fn update_item_dirty_state(
 4656        &mut self,
 4657        item: &dyn ItemHandle,
 4658        window: &mut Window,
 4659        cx: &mut App,
 4660    ) {
 4661        let is_dirty = item.is_dirty(cx);
 4662        let item_id = item.item_id();
 4663        let was_dirty = self.dirty_items.contains_key(&item_id);
 4664        if is_dirty == was_dirty {
 4665            return;
 4666        }
 4667        if was_dirty {
 4668            self.dirty_items.remove(&item_id);
 4669            self.update_window_edited(window, cx);
 4670            return;
 4671        }
 4672        if let Some(window_handle) = window.window_handle().downcast::<Self>() {
 4673            let s = item.on_release(
 4674                cx,
 4675                Box::new(move |cx| {
 4676                    window_handle
 4677                        .update(cx, |this, window, cx| {
 4678                            this.dirty_items.remove(&item_id);
 4679                            this.update_window_edited(window, cx)
 4680                        })
 4681                        .ok();
 4682                }),
 4683            );
 4684            self.dirty_items.insert(item_id, s);
 4685            self.update_window_edited(window, cx);
 4686        }
 4687    }
 4688
 4689    fn render_notifications(&self, _window: &mut Window, _cx: &mut Context<Self>) -> Option<Div> {
 4690        if self.notifications.is_empty() {
 4691            None
 4692        } else {
 4693            Some(
 4694                div()
 4695                    .absolute()
 4696                    .right_3()
 4697                    .bottom_3()
 4698                    .w_112()
 4699                    .h_full()
 4700                    .flex()
 4701                    .flex_col()
 4702                    .justify_end()
 4703                    .gap_2()
 4704                    .children(
 4705                        self.notifications
 4706                            .iter()
 4707                            .map(|(_, notification)| notification.clone().into_any()),
 4708                    ),
 4709            )
 4710        }
 4711    }
 4712
 4713    // RPC handlers
 4714
 4715    fn active_view_for_follower(
 4716        &self,
 4717        follower_project_id: Option<u64>,
 4718        window: &mut Window,
 4719        cx: &mut Context<Self>,
 4720    ) -> Option<proto::View> {
 4721        let (item, panel_id) = self.active_item_for_followers(window, cx);
 4722        let item = item?;
 4723        let leader_id = self
 4724            .pane_for(&*item)
 4725            .and_then(|pane| self.leader_for_pane(&pane));
 4726        let leader_peer_id = match leader_id {
 4727            Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4728            Some(CollaboratorId::Agent) | None => None,
 4729        };
 4730
 4731        let item_handle = item.to_followable_item_handle(cx)?;
 4732        let id = item_handle.remote_id(&self.app_state.client, window, cx)?;
 4733        let variant = item_handle.to_state_proto(window, cx)?;
 4734
 4735        if item_handle.is_project_item(window, cx)
 4736            && (follower_project_id.is_none()
 4737                || follower_project_id != self.project.read(cx).remote_id())
 4738        {
 4739            return None;
 4740        }
 4741
 4742        Some(proto::View {
 4743            id: id.to_proto(),
 4744            leader_id: leader_peer_id,
 4745            variant: Some(variant),
 4746            panel_id: panel_id.map(|id| id as i32),
 4747        })
 4748    }
 4749
 4750    fn handle_follow(
 4751        &mut self,
 4752        follower_project_id: Option<u64>,
 4753        window: &mut Window,
 4754        cx: &mut Context<Self>,
 4755    ) -> proto::FollowResponse {
 4756        let active_view = self.active_view_for_follower(follower_project_id, window, cx);
 4757
 4758        cx.notify();
 4759        proto::FollowResponse {
 4760            // TODO: Remove after version 0.145.x stabilizes.
 4761            active_view_id: active_view.as_ref().and_then(|view| view.id.clone()),
 4762            views: active_view.iter().cloned().collect(),
 4763            active_view,
 4764        }
 4765    }
 4766
 4767    fn handle_update_followers(
 4768        &mut self,
 4769        leader_id: PeerId,
 4770        message: proto::UpdateFollowers,
 4771        _window: &mut Window,
 4772        _cx: &mut Context<Self>,
 4773    ) {
 4774        self.leader_updates_tx
 4775            .unbounded_send((leader_id, message))
 4776            .ok();
 4777    }
 4778
 4779    async fn process_leader_update(
 4780        this: &WeakEntity<Self>,
 4781        leader_id: PeerId,
 4782        update: proto::UpdateFollowers,
 4783        cx: &mut AsyncWindowContext,
 4784    ) -> Result<()> {
 4785        match update.variant.context("invalid update")? {
 4786            proto::update_followers::Variant::CreateView(view) => {
 4787                let view_id = ViewId::from_proto(view.id.clone().context("invalid view id")?)?;
 4788                let should_add_view = this.update(cx, |this, _| {
 4789                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4790                        anyhow::Ok(!state.items_by_leader_view_id.contains_key(&view_id))
 4791                    } else {
 4792                        anyhow::Ok(false)
 4793                    }
 4794                })??;
 4795
 4796                if should_add_view {
 4797                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4798                }
 4799            }
 4800            proto::update_followers::Variant::UpdateActiveView(update_active_view) => {
 4801                let should_add_view = this.update(cx, |this, _| {
 4802                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4803                        state.active_view_id = update_active_view
 4804                            .view
 4805                            .as_ref()
 4806                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4807
 4808                        if state.active_view_id.is_some_and(|view_id| {
 4809                            !state.items_by_leader_view_id.contains_key(&view_id)
 4810                        }) {
 4811                            anyhow::Ok(true)
 4812                        } else {
 4813                            anyhow::Ok(false)
 4814                        }
 4815                    } else {
 4816                        anyhow::Ok(false)
 4817                    }
 4818                })??;
 4819
 4820                if should_add_view && let Some(view) = update_active_view.view {
 4821                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4822                }
 4823            }
 4824            proto::update_followers::Variant::UpdateView(update_view) => {
 4825                let variant = update_view.variant.context("missing update view variant")?;
 4826                let id = update_view.id.context("missing update view id")?;
 4827                let mut tasks = Vec::new();
 4828                this.update_in(cx, |this, window, cx| {
 4829                    let project = this.project.clone();
 4830                    if let Some(state) = this.follower_states.get(&leader_id.into()) {
 4831                        let view_id = ViewId::from_proto(id.clone())?;
 4832                        if let Some(item) = state.items_by_leader_view_id.get(&view_id) {
 4833                            tasks.push(item.view.apply_update_proto(
 4834                                &project,
 4835                                variant.clone(),
 4836                                window,
 4837                                cx,
 4838                            ));
 4839                        }
 4840                    }
 4841                    anyhow::Ok(())
 4842                })??;
 4843                try_join_all(tasks).await.log_err();
 4844            }
 4845        }
 4846        this.update_in(cx, |this, window, cx| {
 4847            this.leader_updated(leader_id, window, cx)
 4848        })?;
 4849        Ok(())
 4850    }
 4851
 4852    async fn add_view_from_leader(
 4853        this: WeakEntity<Self>,
 4854        leader_id: PeerId,
 4855        view: &proto::View,
 4856        cx: &mut AsyncWindowContext,
 4857    ) -> Result<()> {
 4858        let this = this.upgrade().context("workspace dropped")?;
 4859
 4860        let Some(id) = view.id.clone() else {
 4861            anyhow::bail!("no id for view");
 4862        };
 4863        let id = ViewId::from_proto(id)?;
 4864        let panel_id = view.panel_id.and_then(proto::PanelId::from_i32);
 4865
 4866        let pane = this.update(cx, |this, _cx| {
 4867            let state = this
 4868                .follower_states
 4869                .get(&leader_id.into())
 4870                .context("stopped following")?;
 4871            anyhow::Ok(state.pane().clone())
 4872        })??;
 4873        let existing_item = pane.update_in(cx, |pane, window, cx| {
 4874            let client = this.read(cx).client().clone();
 4875            pane.items().find_map(|item| {
 4876                let item = item.to_followable_item_handle(cx)?;
 4877                if item.remote_id(&client, window, cx) == Some(id) {
 4878                    Some(item)
 4879                } else {
 4880                    None
 4881                }
 4882            })
 4883        })?;
 4884        let item = if let Some(existing_item) = existing_item {
 4885            existing_item
 4886        } else {
 4887            let variant = view.variant.clone();
 4888            anyhow::ensure!(variant.is_some(), "missing view variant");
 4889
 4890            let task = cx.update(|window, cx| {
 4891                FollowableViewRegistry::from_state_proto(this.clone(), id, variant, window, cx)
 4892            })?;
 4893
 4894            let Some(task) = task else {
 4895                anyhow::bail!(
 4896                    "failed to construct view from leader (maybe from a different version of zed?)"
 4897                );
 4898            };
 4899
 4900            let mut new_item = task.await?;
 4901            pane.update_in(cx, |pane, window, cx| {
 4902                let mut item_to_remove = None;
 4903                for (ix, item) in pane.items().enumerate() {
 4904                    if let Some(item) = item.to_followable_item_handle(cx) {
 4905                        match new_item.dedup(item.as_ref(), window, cx) {
 4906                            Some(item::Dedup::KeepExisting) => {
 4907                                new_item =
 4908                                    item.boxed_clone().to_followable_item_handle(cx).unwrap();
 4909                                break;
 4910                            }
 4911                            Some(item::Dedup::ReplaceExisting) => {
 4912                                item_to_remove = Some((ix, item.item_id()));
 4913                                break;
 4914                            }
 4915                            None => {}
 4916                        }
 4917                    }
 4918                }
 4919
 4920                if let Some((ix, id)) = item_to_remove {
 4921                    pane.remove_item(id, false, false, window, cx);
 4922                    pane.add_item(new_item.boxed_clone(), false, false, Some(ix), window, cx);
 4923                }
 4924            })?;
 4925
 4926            new_item
 4927        };
 4928
 4929        this.update_in(cx, |this, window, cx| {
 4930            let state = this.follower_states.get_mut(&leader_id.into())?;
 4931            item.set_leader_id(Some(leader_id.into()), window, cx);
 4932            state.items_by_leader_view_id.insert(
 4933                id,
 4934                FollowerView {
 4935                    view: item,
 4936                    location: panel_id,
 4937                },
 4938            );
 4939
 4940            Some(())
 4941        })?;
 4942
 4943        Ok(())
 4944    }
 4945
 4946    fn handle_agent_location_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4947        let Some(follower_state) = self.follower_states.get_mut(&CollaboratorId::Agent) else {
 4948            return;
 4949        };
 4950
 4951        if let Some(agent_location) = self.project.read(cx).agent_location() {
 4952            let buffer_entity_id = agent_location.buffer.entity_id();
 4953            let view_id = ViewId {
 4954                creator: CollaboratorId::Agent,
 4955                id: buffer_entity_id.as_u64(),
 4956            };
 4957            follower_state.active_view_id = Some(view_id);
 4958
 4959            let item = match follower_state.items_by_leader_view_id.entry(view_id) {
 4960                hash_map::Entry::Occupied(entry) => Some(entry.into_mut()),
 4961                hash_map::Entry::Vacant(entry) => {
 4962                    let existing_view =
 4963                        follower_state
 4964                            .center_pane
 4965                            .read(cx)
 4966                            .items()
 4967                            .find_map(|item| {
 4968                                let item = item.to_followable_item_handle(cx)?;
 4969                                if item.buffer_kind(cx) == ItemBufferKind::Singleton
 4970                                    && item.project_item_model_ids(cx).as_slice()
 4971                                        == [buffer_entity_id]
 4972                                {
 4973                                    Some(item)
 4974                                } else {
 4975                                    None
 4976                                }
 4977                            });
 4978                    let view = existing_view.or_else(|| {
 4979                        agent_location.buffer.upgrade().and_then(|buffer| {
 4980                            cx.update_default_global(|registry: &mut ProjectItemRegistry, cx| {
 4981                                registry.build_item(buffer, self.project.clone(), None, window, cx)
 4982                            })?
 4983                            .to_followable_item_handle(cx)
 4984                        })
 4985                    });
 4986
 4987                    view.map(|view| {
 4988                        entry.insert(FollowerView {
 4989                            view,
 4990                            location: None,
 4991                        })
 4992                    })
 4993                }
 4994            };
 4995
 4996            if let Some(item) = item {
 4997                item.view
 4998                    .set_leader_id(Some(CollaboratorId::Agent), window, cx);
 4999                item.view
 5000                    .update_agent_location(agent_location.position, window, cx);
 5001            }
 5002        } else {
 5003            follower_state.active_view_id = None;
 5004        }
 5005
 5006        self.leader_updated(CollaboratorId::Agent, window, cx);
 5007    }
 5008
 5009    pub fn update_active_view_for_followers(&mut self, window: &mut Window, cx: &mut App) {
 5010        let mut is_project_item = true;
 5011        let mut update = proto::UpdateActiveView::default();
 5012        if window.is_window_active() {
 5013            let (active_item, panel_id) = self.active_item_for_followers(window, cx);
 5014
 5015            if let Some(item) = active_item
 5016                && item.item_focus_handle(cx).contains_focused(window, cx)
 5017            {
 5018                let leader_id = self
 5019                    .pane_for(&*item)
 5020                    .and_then(|pane| self.leader_for_pane(&pane));
 5021                let leader_peer_id = match leader_id {
 5022                    Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 5023                    Some(CollaboratorId::Agent) | None => None,
 5024                };
 5025
 5026                if let Some(item) = item.to_followable_item_handle(cx) {
 5027                    let id = item
 5028                        .remote_id(&self.app_state.client, window, cx)
 5029                        .map(|id| id.to_proto());
 5030
 5031                    if let Some(id) = id
 5032                        && let Some(variant) = item.to_state_proto(window, cx)
 5033                    {
 5034                        let view = Some(proto::View {
 5035                            id: id.clone(),
 5036                            leader_id: leader_peer_id,
 5037                            variant: Some(variant),
 5038                            panel_id: panel_id.map(|id| id as i32),
 5039                        });
 5040
 5041                        is_project_item = item.is_project_item(window, cx);
 5042                        update = proto::UpdateActiveView {
 5043                            view,
 5044                            // TODO: Remove after version 0.145.x stabilizes.
 5045                            id,
 5046                            leader_id: leader_peer_id,
 5047                        };
 5048                    };
 5049                }
 5050            }
 5051        }
 5052
 5053        let active_view_id = update.view.as_ref().and_then(|view| view.id.as_ref());
 5054        if active_view_id != self.last_active_view_id.as_ref() {
 5055            self.last_active_view_id = active_view_id.cloned();
 5056            self.update_followers(
 5057                is_project_item,
 5058                proto::update_followers::Variant::UpdateActiveView(update),
 5059                window,
 5060                cx,
 5061            );
 5062        }
 5063    }
 5064
 5065    fn active_item_for_followers(
 5066        &self,
 5067        window: &mut Window,
 5068        cx: &mut App,
 5069    ) -> (Option<Box<dyn ItemHandle>>, Option<proto::PanelId>) {
 5070        let mut active_item = None;
 5071        let mut panel_id = None;
 5072        for dock in self.all_docks() {
 5073            if dock.focus_handle(cx).contains_focused(window, cx)
 5074                && let Some(panel) = dock.read(cx).active_panel()
 5075                && let Some(pane) = panel.pane(cx)
 5076                && let Some(item) = pane.read(cx).active_item()
 5077            {
 5078                active_item = Some(item);
 5079                panel_id = panel.remote_id();
 5080                break;
 5081            }
 5082        }
 5083
 5084        if active_item.is_none() {
 5085            active_item = self.active_pane().read(cx).active_item();
 5086        }
 5087        (active_item, panel_id)
 5088    }
 5089
 5090    fn update_followers(
 5091        &self,
 5092        project_only: bool,
 5093        update: proto::update_followers::Variant,
 5094        _: &mut Window,
 5095        cx: &mut App,
 5096    ) -> Option<()> {
 5097        // If this update only applies to for followers in the current project,
 5098        // then skip it unless this project is shared. If it applies to all
 5099        // followers, regardless of project, then set `project_id` to none,
 5100        // indicating that it goes to all followers.
 5101        let project_id = if project_only {
 5102            Some(self.project.read(cx).remote_id()?)
 5103        } else {
 5104            None
 5105        };
 5106        self.app_state().workspace_store.update(cx, |store, cx| {
 5107            store.update_followers(project_id, update, cx)
 5108        })
 5109    }
 5110
 5111    pub fn leader_for_pane(&self, pane: &Entity<Pane>) -> Option<CollaboratorId> {
 5112        self.follower_states.iter().find_map(|(leader_id, state)| {
 5113            if state.center_pane == *pane || state.dock_pane.as_ref() == Some(pane) {
 5114                Some(*leader_id)
 5115            } else {
 5116                None
 5117            }
 5118        })
 5119    }
 5120
 5121    fn leader_updated(
 5122        &mut self,
 5123        leader_id: impl Into<CollaboratorId>,
 5124        window: &mut Window,
 5125        cx: &mut Context<Self>,
 5126    ) -> Option<Box<dyn ItemHandle>> {
 5127        cx.notify();
 5128
 5129        let leader_id = leader_id.into();
 5130        let (panel_id, item) = match leader_id {
 5131            CollaboratorId::PeerId(peer_id) => self.active_item_for_peer(peer_id, window, cx)?,
 5132            CollaboratorId::Agent => (None, self.active_item_for_agent()?),
 5133        };
 5134
 5135        let state = self.follower_states.get(&leader_id)?;
 5136        let mut transfer_focus = state.center_pane.read(cx).has_focus(window, cx);
 5137        let pane;
 5138        if let Some(panel_id) = panel_id {
 5139            pane = self
 5140                .activate_panel_for_proto_id(panel_id, window, cx)?
 5141                .pane(cx)?;
 5142            let state = self.follower_states.get_mut(&leader_id)?;
 5143            state.dock_pane = Some(pane.clone());
 5144        } else {
 5145            pane = state.center_pane.clone();
 5146            let state = self.follower_states.get_mut(&leader_id)?;
 5147            if let Some(dock_pane) = state.dock_pane.take() {
 5148                transfer_focus |= dock_pane.focus_handle(cx).contains_focused(window, cx);
 5149            }
 5150        }
 5151
 5152        pane.update(cx, |pane, cx| {
 5153            let focus_active_item = pane.has_focus(window, cx) || transfer_focus;
 5154            if let Some(index) = pane.index_for_item(item.as_ref()) {
 5155                pane.activate_item(index, false, false, window, cx);
 5156            } else {
 5157                pane.add_item(item.boxed_clone(), false, false, None, window, cx)
 5158            }
 5159
 5160            if focus_active_item {
 5161                pane.focus_active_item(window, cx)
 5162            }
 5163        });
 5164
 5165        Some(item)
 5166    }
 5167
 5168    fn active_item_for_agent(&self) -> Option<Box<dyn ItemHandle>> {
 5169        let state = self.follower_states.get(&CollaboratorId::Agent)?;
 5170        let active_view_id = state.active_view_id?;
 5171        Some(
 5172            state
 5173                .items_by_leader_view_id
 5174                .get(&active_view_id)?
 5175                .view
 5176                .boxed_clone(),
 5177        )
 5178    }
 5179
 5180    fn active_item_for_peer(
 5181        &self,
 5182        peer_id: PeerId,
 5183        window: &mut Window,
 5184        cx: &mut Context<Self>,
 5185    ) -> Option<(Option<PanelId>, Box<dyn ItemHandle>)> {
 5186        let call = self.active_call()?;
 5187        let room = call.read(cx).room()?.read(cx);
 5188        let participant = room.remote_participant_for_peer_id(peer_id)?;
 5189        let leader_in_this_app;
 5190        let leader_in_this_project;
 5191        match participant.location {
 5192            call::ParticipantLocation::SharedProject { project_id } => {
 5193                leader_in_this_app = true;
 5194                leader_in_this_project = Some(project_id) == self.project.read(cx).remote_id();
 5195            }
 5196            call::ParticipantLocation::UnsharedProject => {
 5197                leader_in_this_app = true;
 5198                leader_in_this_project = false;
 5199            }
 5200            call::ParticipantLocation::External => {
 5201                leader_in_this_app = false;
 5202                leader_in_this_project = false;
 5203            }
 5204        };
 5205        let state = self.follower_states.get(&peer_id.into())?;
 5206        let mut item_to_activate = None;
 5207        if let (Some(active_view_id), true) = (state.active_view_id, leader_in_this_app) {
 5208            if let Some(item) = state.items_by_leader_view_id.get(&active_view_id)
 5209                && (leader_in_this_project || !item.view.is_project_item(window, cx))
 5210            {
 5211                item_to_activate = Some((item.location, item.view.boxed_clone()));
 5212            }
 5213        } else if let Some(shared_screen) =
 5214            self.shared_screen_for_peer(peer_id, &state.center_pane, window, cx)
 5215        {
 5216            item_to_activate = Some((None, Box::new(shared_screen)));
 5217        }
 5218        item_to_activate
 5219    }
 5220
 5221    fn shared_screen_for_peer(
 5222        &self,
 5223        peer_id: PeerId,
 5224        pane: &Entity<Pane>,
 5225        window: &mut Window,
 5226        cx: &mut App,
 5227    ) -> Option<Entity<SharedScreen>> {
 5228        let call = self.active_call()?;
 5229        let room = call.read(cx).room()?.clone();
 5230        let participant = room.read(cx).remote_participant_for_peer_id(peer_id)?;
 5231        let track = participant.video_tracks.values().next()?.clone();
 5232        let user = participant.user.clone();
 5233
 5234        for item in pane.read(cx).items_of_type::<SharedScreen>() {
 5235            if item.read(cx).peer_id == peer_id {
 5236                return Some(item);
 5237            }
 5238        }
 5239
 5240        Some(cx.new(|cx| SharedScreen::new(track, peer_id, user.clone(), room.clone(), window, cx)))
 5241    }
 5242
 5243    pub fn on_window_activation_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5244        if window.is_window_active() {
 5245            self.update_active_view_for_followers(window, cx);
 5246
 5247            if let Some(database_id) = self.database_id {
 5248                cx.background_spawn(persistence::DB.update_timestamp(database_id))
 5249                    .detach();
 5250            }
 5251        } else {
 5252            for pane in &self.panes {
 5253                pane.update(cx, |pane, cx| {
 5254                    if let Some(item) = pane.active_item() {
 5255                        item.workspace_deactivated(window, cx);
 5256                    }
 5257                    for item in pane.items() {
 5258                        if matches!(
 5259                            item.workspace_settings(cx).autosave,
 5260                            AutosaveSetting::OnWindowChange | AutosaveSetting::OnFocusChange
 5261                        ) {
 5262                            Pane::autosave_item(item.as_ref(), self.project.clone(), window, cx)
 5263                                .detach_and_log_err(cx);
 5264                        }
 5265                    }
 5266                });
 5267            }
 5268        }
 5269    }
 5270
 5271    pub fn active_call(&self) -> Option<&Entity<ActiveCall>> {
 5272        self.active_call.as_ref().map(|(call, _)| call)
 5273    }
 5274
 5275    fn on_active_call_event(
 5276        &mut self,
 5277        _: &Entity<ActiveCall>,
 5278        event: &call::room::Event,
 5279        window: &mut Window,
 5280        cx: &mut Context<Self>,
 5281    ) {
 5282        match event {
 5283            call::room::Event::ParticipantLocationChanged { participant_id }
 5284            | call::room::Event::RemoteVideoTracksChanged { participant_id } => {
 5285                self.leader_updated(participant_id, window, cx);
 5286            }
 5287            _ => {}
 5288        }
 5289    }
 5290
 5291    pub fn database_id(&self) -> Option<WorkspaceId> {
 5292        self.database_id
 5293    }
 5294
 5295    pub fn session_id(&self) -> Option<String> {
 5296        self.session_id.clone()
 5297    }
 5298
 5299    pub fn root_paths(&self, cx: &App) -> Vec<Arc<Path>> {
 5300        let project = self.project().read(cx);
 5301        project
 5302            .visible_worktrees(cx)
 5303            .map(|worktree| worktree.read(cx).abs_path())
 5304            .collect::<Vec<_>>()
 5305    }
 5306
 5307    fn remove_panes(&mut self, member: Member, window: &mut Window, cx: &mut Context<Workspace>) {
 5308        match member {
 5309            Member::Axis(PaneAxis { members, .. }) => {
 5310                for child in members.iter() {
 5311                    self.remove_panes(child.clone(), window, cx)
 5312                }
 5313            }
 5314            Member::Pane(pane) => {
 5315                self.force_remove_pane(&pane, &None, window, cx);
 5316            }
 5317        }
 5318    }
 5319
 5320    fn remove_from_session(&mut self, window: &mut Window, cx: &mut App) -> Task<()> {
 5321        self.session_id.take();
 5322        self.serialize_workspace_internal(window, cx)
 5323    }
 5324
 5325    fn force_remove_pane(
 5326        &mut self,
 5327        pane: &Entity<Pane>,
 5328        focus_on: &Option<Entity<Pane>>,
 5329        window: &mut Window,
 5330        cx: &mut Context<Workspace>,
 5331    ) {
 5332        self.panes.retain(|p| p != pane);
 5333        if let Some(focus_on) = focus_on {
 5334            focus_on.update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5335        } else if self.active_pane() == pane {
 5336            self.panes
 5337                .last()
 5338                .unwrap()
 5339                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5340        }
 5341        if self.last_active_center_pane == Some(pane.downgrade()) {
 5342            self.last_active_center_pane = None;
 5343        }
 5344        cx.notify();
 5345    }
 5346
 5347    fn serialize_workspace(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5348        if self._schedule_serialize_workspace.is_none() {
 5349            self._schedule_serialize_workspace =
 5350                Some(cx.spawn_in(window, async move |this, cx| {
 5351                    cx.background_executor()
 5352                        .timer(SERIALIZATION_THROTTLE_TIME)
 5353                        .await;
 5354                    this.update_in(cx, |this, window, cx| {
 5355                        this.serialize_workspace_internal(window, cx).detach();
 5356                        this._schedule_serialize_workspace.take();
 5357                    })
 5358                    .log_err();
 5359                }));
 5360        }
 5361    }
 5362
 5363    fn serialize_workspace_internal(&self, window: &mut Window, cx: &mut App) -> Task<()> {
 5364        let Some(database_id) = self.database_id() else {
 5365            return Task::ready(());
 5366        };
 5367
 5368        fn serialize_pane_handle(
 5369            pane_handle: &Entity<Pane>,
 5370            window: &mut Window,
 5371            cx: &mut App,
 5372        ) -> SerializedPane {
 5373            let (items, active, pinned_count) = {
 5374                let pane = pane_handle.read(cx);
 5375                let active_item_id = pane.active_item().map(|item| item.item_id());
 5376                (
 5377                    pane.items()
 5378                        .filter_map(|handle| {
 5379                            let handle = handle.to_serializable_item_handle(cx)?;
 5380
 5381                            Some(SerializedItem {
 5382                                kind: Arc::from(handle.serialized_item_kind()),
 5383                                item_id: handle.item_id().as_u64(),
 5384                                active: Some(handle.item_id()) == active_item_id,
 5385                                preview: pane.is_active_preview_item(handle.item_id()),
 5386                            })
 5387                        })
 5388                        .collect::<Vec<_>>(),
 5389                    pane.has_focus(window, cx),
 5390                    pane.pinned_count(),
 5391                )
 5392            };
 5393
 5394            SerializedPane::new(items, active, pinned_count)
 5395        }
 5396
 5397        fn build_serialized_pane_group(
 5398            pane_group: &Member,
 5399            window: &mut Window,
 5400            cx: &mut App,
 5401        ) -> SerializedPaneGroup {
 5402            match pane_group {
 5403                Member::Axis(PaneAxis {
 5404                    axis,
 5405                    members,
 5406                    flexes,
 5407                    bounding_boxes: _,
 5408                }) => SerializedPaneGroup::Group {
 5409                    axis: SerializedAxis(*axis),
 5410                    children: members
 5411                        .iter()
 5412                        .map(|member| build_serialized_pane_group(member, window, cx))
 5413                        .collect::<Vec<_>>(),
 5414                    flexes: Some(flexes.lock().clone()),
 5415                },
 5416                Member::Pane(pane_handle) => {
 5417                    SerializedPaneGroup::Pane(serialize_pane_handle(pane_handle, window, cx))
 5418                }
 5419            }
 5420        }
 5421
 5422        fn build_serialized_docks(
 5423            this: &Workspace,
 5424            window: &mut Window,
 5425            cx: &mut App,
 5426        ) -> DockStructure {
 5427            let left_dock = this.left_dock.read(cx);
 5428            let left_visible = left_dock.is_open();
 5429            let left_active_panel = left_dock
 5430                .active_panel()
 5431                .map(|panel| panel.persistent_name().to_string());
 5432            let left_dock_zoom = left_dock
 5433                .active_panel()
 5434                .map(|panel| panel.is_zoomed(window, cx))
 5435                .unwrap_or(false);
 5436
 5437            let right_dock = this.right_dock.read(cx);
 5438            let right_visible = right_dock.is_open();
 5439            let right_active_panel = right_dock
 5440                .active_panel()
 5441                .map(|panel| panel.persistent_name().to_string());
 5442            let right_dock_zoom = right_dock
 5443                .active_panel()
 5444                .map(|panel| panel.is_zoomed(window, cx))
 5445                .unwrap_or(false);
 5446
 5447            let bottom_dock = this.bottom_dock.read(cx);
 5448            let bottom_visible = bottom_dock.is_open();
 5449            let bottom_active_panel = bottom_dock
 5450                .active_panel()
 5451                .map(|panel| panel.persistent_name().to_string());
 5452            let bottom_dock_zoom = bottom_dock
 5453                .active_panel()
 5454                .map(|panel| panel.is_zoomed(window, cx))
 5455                .unwrap_or(false);
 5456
 5457            DockStructure {
 5458                left: DockData {
 5459                    visible: left_visible,
 5460                    active_panel: left_active_panel,
 5461                    zoom: left_dock_zoom,
 5462                },
 5463                right: DockData {
 5464                    visible: right_visible,
 5465                    active_panel: right_active_panel,
 5466                    zoom: right_dock_zoom,
 5467                },
 5468                bottom: DockData {
 5469                    visible: bottom_visible,
 5470                    active_panel: bottom_active_panel,
 5471                    zoom: bottom_dock_zoom,
 5472                },
 5473            }
 5474        }
 5475
 5476        match self.serialize_workspace_location(cx) {
 5477            WorkspaceLocation::Location(location, paths) => {
 5478                let breakpoints = self.project.update(cx, |project, cx| {
 5479                    project
 5480                        .breakpoint_store()
 5481                        .read(cx)
 5482                        .all_source_breakpoints(cx)
 5483                });
 5484                let user_toolchains = self
 5485                    .project
 5486                    .read(cx)
 5487                    .user_toolchains(cx)
 5488                    .unwrap_or_default();
 5489
 5490                let center_group = build_serialized_pane_group(&self.center.root, window, cx);
 5491                let docks = build_serialized_docks(self, window, cx);
 5492                let window_bounds = Some(SerializedWindowBounds(window.window_bounds()));
 5493
 5494                let serialized_workspace = SerializedWorkspace {
 5495                    id: database_id,
 5496                    location,
 5497                    paths,
 5498                    center_group,
 5499                    window_bounds,
 5500                    display: Default::default(),
 5501                    docks,
 5502                    centered_layout: self.centered_layout,
 5503                    session_id: self.session_id.clone(),
 5504                    breakpoints,
 5505                    window_id: Some(window.window_handle().window_id().as_u64()),
 5506                    user_toolchains,
 5507                };
 5508
 5509                window.spawn(cx, async move |_| {
 5510                    persistence::DB.save_workspace(serialized_workspace).await;
 5511                })
 5512            }
 5513            WorkspaceLocation::DetachFromSession => window.spawn(cx, async move |_| {
 5514                persistence::DB
 5515                    .set_session_id(database_id, None)
 5516                    .await
 5517                    .log_err();
 5518            }),
 5519            WorkspaceLocation::None => Task::ready(()),
 5520        }
 5521    }
 5522
 5523    fn serialize_workspace_location(&self, cx: &App) -> WorkspaceLocation {
 5524        let paths = PathList::new(&self.root_paths(cx));
 5525        if let Some(connection) = self.project.read(cx).remote_connection_options(cx) {
 5526            WorkspaceLocation::Location(SerializedWorkspaceLocation::Remote(connection), paths)
 5527        } else if self.project.read(cx).is_local() {
 5528            if !paths.is_empty() {
 5529                WorkspaceLocation::Location(SerializedWorkspaceLocation::Local, paths)
 5530            } else {
 5531                WorkspaceLocation::DetachFromSession
 5532            }
 5533        } else {
 5534            WorkspaceLocation::None
 5535        }
 5536    }
 5537
 5538    fn update_history(&self, cx: &mut App) {
 5539        let Some(id) = self.database_id() else {
 5540            return;
 5541        };
 5542        if !self.project.read(cx).is_local() {
 5543            return;
 5544        }
 5545        if let Some(manager) = HistoryManager::global(cx) {
 5546            let paths = PathList::new(&self.root_paths(cx));
 5547            manager.update(cx, |this, cx| {
 5548                this.update_history(id, HistoryManagerEntry::new(id, &paths), cx);
 5549            });
 5550        }
 5551    }
 5552
 5553    async fn serialize_items(
 5554        this: &WeakEntity<Self>,
 5555        items_rx: UnboundedReceiver<Box<dyn SerializableItemHandle>>,
 5556        cx: &mut AsyncWindowContext,
 5557    ) -> Result<()> {
 5558        const CHUNK_SIZE: usize = 200;
 5559
 5560        let mut serializable_items = items_rx.ready_chunks(CHUNK_SIZE);
 5561
 5562        while let Some(items_received) = serializable_items.next().await {
 5563            let unique_items =
 5564                items_received
 5565                    .into_iter()
 5566                    .fold(HashMap::default(), |mut acc, item| {
 5567                        acc.entry(item.item_id()).or_insert(item);
 5568                        acc
 5569                    });
 5570
 5571            // We use into_iter() here so that the references to the items are moved into
 5572            // the tasks and not kept alive while we're sleeping.
 5573            for (_, item) in unique_items.into_iter() {
 5574                if let Ok(Some(task)) = this.update_in(cx, |workspace, window, cx| {
 5575                    item.serialize(workspace, false, window, cx)
 5576                }) {
 5577                    cx.background_spawn(async move { task.await.log_err() })
 5578                        .detach();
 5579                }
 5580            }
 5581
 5582            cx.background_executor()
 5583                .timer(SERIALIZATION_THROTTLE_TIME)
 5584                .await;
 5585        }
 5586
 5587        Ok(())
 5588    }
 5589
 5590    pub(crate) fn enqueue_item_serialization(
 5591        &mut self,
 5592        item: Box<dyn SerializableItemHandle>,
 5593    ) -> Result<()> {
 5594        self.serializable_items_tx
 5595            .unbounded_send(item)
 5596            .map_err(|err| anyhow!("failed to send serializable item over channel: {err}"))
 5597    }
 5598
 5599    pub(crate) fn load_workspace(
 5600        serialized_workspace: SerializedWorkspace,
 5601        paths_to_open: Vec<Option<ProjectPath>>,
 5602        window: &mut Window,
 5603        cx: &mut Context<Workspace>,
 5604    ) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 5605        cx.spawn_in(window, async move |workspace, cx| {
 5606            let project = workspace.read_with(cx, |workspace, _| workspace.project().clone())?;
 5607
 5608            let mut center_group = None;
 5609            let mut center_items = None;
 5610
 5611            // Traverse the splits tree and add to things
 5612            if let Some((group, active_pane, items)) = serialized_workspace
 5613                .center_group
 5614                .deserialize(&project, serialized_workspace.id, workspace.clone(), cx)
 5615                .await
 5616            {
 5617                center_items = Some(items);
 5618                center_group = Some((group, active_pane))
 5619            }
 5620
 5621            let mut items_by_project_path = HashMap::default();
 5622            let mut item_ids_by_kind = HashMap::default();
 5623            let mut all_deserialized_items = Vec::default();
 5624            cx.update(|_, cx| {
 5625                for item in center_items.unwrap_or_default().into_iter().flatten() {
 5626                    if let Some(serializable_item_handle) = item.to_serializable_item_handle(cx) {
 5627                        item_ids_by_kind
 5628                            .entry(serializable_item_handle.serialized_item_kind())
 5629                            .or_insert(Vec::new())
 5630                            .push(item.item_id().as_u64() as ItemId);
 5631                    }
 5632
 5633                    if let Some(project_path) = item.project_path(cx) {
 5634                        items_by_project_path.insert(project_path, item.clone());
 5635                    }
 5636                    all_deserialized_items.push(item);
 5637                }
 5638            })?;
 5639
 5640            let opened_items = paths_to_open
 5641                .into_iter()
 5642                .map(|path_to_open| {
 5643                    path_to_open
 5644                        .and_then(|path_to_open| items_by_project_path.remove(&path_to_open))
 5645                })
 5646                .collect::<Vec<_>>();
 5647
 5648            // Remove old panes from workspace panes list
 5649            workspace.update_in(cx, |workspace, window, cx| {
 5650                if let Some((center_group, active_pane)) = center_group {
 5651                    workspace.remove_panes(workspace.center.root.clone(), window, cx);
 5652
 5653                    // Swap workspace center group
 5654                    workspace.center = PaneGroup::with_root(center_group);
 5655                    if let Some(active_pane) = active_pane {
 5656                        workspace.set_active_pane(&active_pane, window, cx);
 5657                        cx.focus_self(window);
 5658                    } else {
 5659                        workspace.set_active_pane(&workspace.center.first_pane(), window, cx);
 5660                    }
 5661                }
 5662
 5663                let docks = serialized_workspace.docks;
 5664
 5665                for (dock, serialized_dock) in [
 5666                    (&mut workspace.right_dock, docks.right),
 5667                    (&mut workspace.left_dock, docks.left),
 5668                    (&mut workspace.bottom_dock, docks.bottom),
 5669                ]
 5670                .iter_mut()
 5671                {
 5672                    dock.update(cx, |dock, cx| {
 5673                        dock.serialized_dock = Some(serialized_dock.clone());
 5674                        dock.restore_state(window, cx);
 5675                    });
 5676                }
 5677
 5678                cx.notify();
 5679            })?;
 5680
 5681            let _ = project
 5682                .update(cx, |project, cx| {
 5683                    project
 5684                        .breakpoint_store()
 5685                        .update(cx, |breakpoint_store, cx| {
 5686                            breakpoint_store
 5687                                .with_serialized_breakpoints(serialized_workspace.breakpoints, cx)
 5688                        })
 5689                })?
 5690                .await;
 5691
 5692            // Clean up all the items that have _not_ been loaded. Our ItemIds aren't stable. That means
 5693            // after loading the items, we might have different items and in order to avoid
 5694            // the database filling up, we delete items that haven't been loaded now.
 5695            //
 5696            // The items that have been loaded, have been saved after they've been added to the workspace.
 5697            let clean_up_tasks = workspace.update_in(cx, |_, window, cx| {
 5698                item_ids_by_kind
 5699                    .into_iter()
 5700                    .map(|(item_kind, loaded_items)| {
 5701                        SerializableItemRegistry::cleanup(
 5702                            item_kind,
 5703                            serialized_workspace.id,
 5704                            loaded_items,
 5705                            window,
 5706                            cx,
 5707                        )
 5708                        .log_err()
 5709                    })
 5710                    .collect::<Vec<_>>()
 5711            })?;
 5712
 5713            futures::future::join_all(clean_up_tasks).await;
 5714
 5715            workspace
 5716                .update_in(cx, |workspace, window, cx| {
 5717                    // Serialize ourself to make sure our timestamps and any pane / item changes are replicated
 5718                    workspace.serialize_workspace_internal(window, cx).detach();
 5719
 5720                    // Ensure that we mark the window as edited if we did load dirty items
 5721                    workspace.update_window_edited(window, cx);
 5722                })
 5723                .ok();
 5724
 5725            Ok(opened_items)
 5726        })
 5727    }
 5728
 5729    fn actions(&self, div: Div, window: &mut Window, cx: &mut Context<Self>) -> Div {
 5730        self.add_workspace_actions_listeners(div, window, cx)
 5731            .on_action(cx.listener(
 5732                |_workspace, action_sequence: &settings::ActionSequence, window, cx| {
 5733                    for action in &action_sequence.0 {
 5734                        window.dispatch_action(action.boxed_clone(), cx);
 5735                    }
 5736                },
 5737            ))
 5738            .on_action(cx.listener(Self::close_inactive_items_and_panes))
 5739            .on_action(cx.listener(Self::close_all_items_and_panes))
 5740            .on_action(cx.listener(Self::save_all))
 5741            .on_action(cx.listener(Self::send_keystrokes))
 5742            .on_action(cx.listener(Self::add_folder_to_project))
 5743            .on_action(cx.listener(Self::follow_next_collaborator))
 5744            .on_action(cx.listener(Self::close_window))
 5745            .on_action(cx.listener(Self::activate_pane_at_index))
 5746            .on_action(cx.listener(Self::move_item_to_pane_at_index))
 5747            .on_action(cx.listener(Self::move_focused_panel_to_next_position))
 5748            .on_action(cx.listener(Self::toggle_edit_predictions_all_files))
 5749            .on_action(cx.listener(|workspace, _: &Unfollow, window, cx| {
 5750                let pane = workspace.active_pane().clone();
 5751                workspace.unfollow_in_pane(&pane, window, cx);
 5752            }))
 5753            .on_action(cx.listener(|workspace, action: &Save, window, cx| {
 5754                workspace
 5755                    .save_active_item(action.save_intent.unwrap_or(SaveIntent::Save), window, cx)
 5756                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5757            }))
 5758            .on_action(cx.listener(|workspace, _: &SaveWithoutFormat, window, cx| {
 5759                workspace
 5760                    .save_active_item(SaveIntent::SaveWithoutFormat, window, cx)
 5761                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5762            }))
 5763            .on_action(cx.listener(|workspace, _: &SaveAs, window, cx| {
 5764                workspace
 5765                    .save_active_item(SaveIntent::SaveAs, window, cx)
 5766                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5767            }))
 5768            .on_action(
 5769                cx.listener(|workspace, _: &ActivatePreviousPane, window, cx| {
 5770                    workspace.activate_previous_pane(window, cx)
 5771                }),
 5772            )
 5773            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5774                workspace.activate_next_pane(window, cx)
 5775            }))
 5776            .on_action(
 5777                cx.listener(|workspace, _: &ActivateNextWindow, _window, cx| {
 5778                    workspace.activate_next_window(cx)
 5779                }),
 5780            )
 5781            .on_action(
 5782                cx.listener(|workspace, _: &ActivatePreviousWindow, _window, cx| {
 5783                    workspace.activate_previous_window(cx)
 5784                }),
 5785            )
 5786            .on_action(cx.listener(|workspace, _: &ActivatePaneLeft, window, cx| {
 5787                workspace.activate_pane_in_direction(SplitDirection::Left, window, cx)
 5788            }))
 5789            .on_action(cx.listener(|workspace, _: &ActivatePaneRight, window, cx| {
 5790                workspace.activate_pane_in_direction(SplitDirection::Right, window, cx)
 5791            }))
 5792            .on_action(cx.listener(|workspace, _: &ActivatePaneUp, window, cx| {
 5793                workspace.activate_pane_in_direction(SplitDirection::Up, window, cx)
 5794            }))
 5795            .on_action(cx.listener(|workspace, _: &ActivatePaneDown, window, cx| {
 5796                workspace.activate_pane_in_direction(SplitDirection::Down, window, cx)
 5797            }))
 5798            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5799                workspace.activate_next_pane(window, cx)
 5800            }))
 5801            .on_action(cx.listener(
 5802                |workspace, action: &MoveItemToPaneInDirection, window, cx| {
 5803                    workspace.move_item_to_pane_in_direction(action, window, cx)
 5804                },
 5805            ))
 5806            .on_action(cx.listener(|workspace, _: &SwapPaneLeft, _, cx| {
 5807                workspace.swap_pane_in_direction(SplitDirection::Left, cx)
 5808            }))
 5809            .on_action(cx.listener(|workspace, _: &SwapPaneRight, _, cx| {
 5810                workspace.swap_pane_in_direction(SplitDirection::Right, cx)
 5811            }))
 5812            .on_action(cx.listener(|workspace, _: &SwapPaneUp, _, cx| {
 5813                workspace.swap_pane_in_direction(SplitDirection::Up, cx)
 5814            }))
 5815            .on_action(cx.listener(|workspace, _: &SwapPaneDown, _, cx| {
 5816                workspace.swap_pane_in_direction(SplitDirection::Down, cx)
 5817            }))
 5818            .on_action(cx.listener(|workspace, _: &MovePaneLeft, _, cx| {
 5819                workspace.move_pane_to_border(SplitDirection::Left, cx)
 5820            }))
 5821            .on_action(cx.listener(|workspace, _: &MovePaneRight, _, cx| {
 5822                workspace.move_pane_to_border(SplitDirection::Right, cx)
 5823            }))
 5824            .on_action(cx.listener(|workspace, _: &MovePaneUp, _, cx| {
 5825                workspace.move_pane_to_border(SplitDirection::Up, cx)
 5826            }))
 5827            .on_action(cx.listener(|workspace, _: &MovePaneDown, _, cx| {
 5828                workspace.move_pane_to_border(SplitDirection::Down, cx)
 5829            }))
 5830            .on_action(cx.listener(|this, _: &ToggleLeftDock, window, cx| {
 5831                this.toggle_dock(DockPosition::Left, window, cx);
 5832            }))
 5833            .on_action(cx.listener(
 5834                |workspace: &mut Workspace, _: &ToggleRightDock, window, cx| {
 5835                    workspace.toggle_dock(DockPosition::Right, window, cx);
 5836                },
 5837            ))
 5838            .on_action(cx.listener(
 5839                |workspace: &mut Workspace, _: &ToggleBottomDock, window, cx| {
 5840                    workspace.toggle_dock(DockPosition::Bottom, window, cx);
 5841                },
 5842            ))
 5843            .on_action(cx.listener(
 5844                |workspace: &mut Workspace, _: &CloseActiveDock, window, cx| {
 5845                    if !workspace.close_active_dock(window, cx) {
 5846                        cx.propagate();
 5847                    }
 5848                },
 5849            ))
 5850            .on_action(
 5851                cx.listener(|workspace: &mut Workspace, _: &CloseAllDocks, window, cx| {
 5852                    workspace.close_all_docks(window, cx);
 5853                }),
 5854            )
 5855            .on_action(cx.listener(Self::toggle_all_docks))
 5856            .on_action(cx.listener(
 5857                |workspace: &mut Workspace, _: &ClearAllNotifications, _, cx| {
 5858                    workspace.clear_all_notifications(cx);
 5859                },
 5860            ))
 5861            .on_action(cx.listener(
 5862                |workspace: &mut Workspace, _: &SuppressNotification, _, cx| {
 5863                    if let Some((notification_id, _)) = workspace.notifications.pop() {
 5864                        workspace.suppress_notification(&notification_id, cx);
 5865                    }
 5866                },
 5867            ))
 5868            .on_action(cx.listener(
 5869                |workspace: &mut Workspace, _: &ReopenClosedItem, window, cx| {
 5870                    workspace.reopen_closed_item(window, cx).detach();
 5871                },
 5872            ))
 5873            .on_action(cx.listener(
 5874                |workspace: &mut Workspace, _: &ResetActiveDockSize, window, cx| {
 5875                    for dock in workspace.all_docks() {
 5876                        if dock.focus_handle(cx).contains_focused(window, cx) {
 5877                            let Some(panel) = dock.read(cx).active_panel() else {
 5878                                return;
 5879                            };
 5880
 5881                            // Set to `None`, then the size will fall back to the default.
 5882                            panel.clone().set_size(None, window, cx);
 5883
 5884                            return;
 5885                        }
 5886                    }
 5887                },
 5888            ))
 5889            .on_action(cx.listener(
 5890                |workspace: &mut Workspace, _: &ResetOpenDocksSize, window, cx| {
 5891                    for dock in workspace.all_docks() {
 5892                        if let Some(panel) = dock.read(cx).visible_panel() {
 5893                            // Set to `None`, then the size will fall back to the default.
 5894                            panel.clone().set_size(None, window, cx);
 5895                        }
 5896                    }
 5897                },
 5898            ))
 5899            .on_action(cx.listener(
 5900                |workspace: &mut Workspace, act: &IncreaseActiveDockSize, window, cx| {
 5901                    adjust_active_dock_size_by_px(
 5902                        px_with_ui_font_fallback(act.px, cx),
 5903                        workspace,
 5904                        window,
 5905                        cx,
 5906                    );
 5907                },
 5908            ))
 5909            .on_action(cx.listener(
 5910                |workspace: &mut Workspace, act: &DecreaseActiveDockSize, window, cx| {
 5911                    adjust_active_dock_size_by_px(
 5912                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5913                        workspace,
 5914                        window,
 5915                        cx,
 5916                    );
 5917                },
 5918            ))
 5919            .on_action(cx.listener(
 5920                |workspace: &mut Workspace, act: &IncreaseOpenDocksSize, window, cx| {
 5921                    adjust_open_docks_size_by_px(
 5922                        px_with_ui_font_fallback(act.px, cx),
 5923                        workspace,
 5924                        window,
 5925                        cx,
 5926                    );
 5927                },
 5928            ))
 5929            .on_action(cx.listener(
 5930                |workspace: &mut Workspace, act: &DecreaseOpenDocksSize, window, cx| {
 5931                    adjust_open_docks_size_by_px(
 5932                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5933                        workspace,
 5934                        window,
 5935                        cx,
 5936                    );
 5937                },
 5938            ))
 5939            .on_action(cx.listener(Workspace::toggle_centered_layout))
 5940            .on_action(cx.listener(Workspace::cancel))
 5941    }
 5942
 5943    #[cfg(any(test, feature = "test-support"))]
 5944    pub fn test_new(project: Entity<Project>, window: &mut Window, cx: &mut Context<Self>) -> Self {
 5945        use node_runtime::NodeRuntime;
 5946        use session::Session;
 5947
 5948        let client = project.read(cx).client();
 5949        let user_store = project.read(cx).user_store();
 5950        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 5951        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 5952        window.activate_window();
 5953        let app_state = Arc::new(AppState {
 5954            languages: project.read(cx).languages().clone(),
 5955            workspace_store,
 5956            client,
 5957            user_store,
 5958            fs: project.read(cx).fs().clone(),
 5959            build_window_options: |_, _| Default::default(),
 5960            node_runtime: NodeRuntime::unavailable(),
 5961            session,
 5962        });
 5963        let workspace = Self::new(Default::default(), project, app_state, window, cx);
 5964        workspace
 5965            .active_pane
 5966            .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5967        workspace
 5968    }
 5969
 5970    pub fn register_action<A: Action>(
 5971        &mut self,
 5972        callback: impl Fn(&mut Self, &A, &mut Window, &mut Context<Self>) + 'static,
 5973    ) -> &mut Self {
 5974        let callback = Arc::new(callback);
 5975
 5976        self.workspace_actions.push(Box::new(move |div, _, _, cx| {
 5977            let callback = callback.clone();
 5978            div.on_action(cx.listener(move |workspace, event, window, cx| {
 5979                (callback)(workspace, event, window, cx)
 5980            }))
 5981        }));
 5982        self
 5983    }
 5984    pub fn register_action_renderer(
 5985        &mut self,
 5986        callback: impl Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div + 'static,
 5987    ) -> &mut Self {
 5988        self.workspace_actions.push(Box::new(callback));
 5989        self
 5990    }
 5991
 5992    fn add_workspace_actions_listeners(
 5993        &self,
 5994        mut div: Div,
 5995        window: &mut Window,
 5996        cx: &mut Context<Self>,
 5997    ) -> Div {
 5998        for action in self.workspace_actions.iter() {
 5999            div = (action)(div, self, window, cx)
 6000        }
 6001        div
 6002    }
 6003
 6004    pub fn has_active_modal(&self, _: &mut Window, cx: &mut App) -> bool {
 6005        self.modal_layer.read(cx).has_active_modal()
 6006    }
 6007
 6008    pub fn active_modal<V: ManagedView + 'static>(&self, cx: &App) -> Option<Entity<V>> {
 6009        self.modal_layer.read(cx).active_modal()
 6010    }
 6011
 6012    pub fn toggle_modal<V: ModalView, B>(&mut self, window: &mut Window, cx: &mut App, build: B)
 6013    where
 6014        B: FnOnce(&mut Window, &mut Context<V>) -> V,
 6015    {
 6016        self.modal_layer.update(cx, |modal_layer, cx| {
 6017            modal_layer.toggle_modal(window, cx, build)
 6018        })
 6019    }
 6020
 6021    pub fn hide_modal(&mut self, window: &mut Window, cx: &mut App) -> bool {
 6022        self.modal_layer
 6023            .update(cx, |modal_layer, cx| modal_layer.hide_modal(window, cx))
 6024    }
 6025
 6026    pub fn toggle_status_toast<V: ToastView>(&mut self, entity: Entity<V>, cx: &mut App) {
 6027        self.toast_layer
 6028            .update(cx, |toast_layer, cx| toast_layer.toggle_toast(cx, entity))
 6029    }
 6030
 6031    pub fn toggle_centered_layout(
 6032        &mut self,
 6033        _: &ToggleCenteredLayout,
 6034        _: &mut Window,
 6035        cx: &mut Context<Self>,
 6036    ) {
 6037        self.centered_layout = !self.centered_layout;
 6038        if let Some(database_id) = self.database_id() {
 6039            cx.background_spawn(DB.set_centered_layout(database_id, self.centered_layout))
 6040                .detach_and_log_err(cx);
 6041        }
 6042        cx.notify();
 6043    }
 6044
 6045    fn adjust_padding(padding: Option<f32>) -> f32 {
 6046        padding
 6047            .unwrap_or(CenteredPaddingSettings::default().0)
 6048            .clamp(
 6049                CenteredPaddingSettings::MIN_PADDING,
 6050                CenteredPaddingSettings::MAX_PADDING,
 6051            )
 6052    }
 6053
 6054    fn render_dock(
 6055        &self,
 6056        position: DockPosition,
 6057        dock: &Entity<Dock>,
 6058        window: &mut Window,
 6059        cx: &mut App,
 6060    ) -> Option<Div> {
 6061        if self.zoomed_position == Some(position) {
 6062            return None;
 6063        }
 6064
 6065        let leader_border = dock.read(cx).active_panel().and_then(|panel| {
 6066            let pane = panel.pane(cx)?;
 6067            let follower_states = &self.follower_states;
 6068            leader_border_for_pane(follower_states, &pane, window, cx)
 6069        });
 6070
 6071        Some(
 6072            div()
 6073                .flex()
 6074                .flex_none()
 6075                .overflow_hidden()
 6076                .child(dock.clone())
 6077                .children(leader_border),
 6078        )
 6079    }
 6080
 6081    pub fn for_window(window: &mut Window, _: &mut App) -> Option<Entity<Workspace>> {
 6082        window.root().flatten()
 6083    }
 6084
 6085    pub fn zoomed_item(&self) -> Option<&AnyWeakView> {
 6086        self.zoomed.as_ref()
 6087    }
 6088
 6089    pub fn activate_next_window(&mut self, cx: &mut Context<Self>) {
 6090        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 6091            return;
 6092        };
 6093        let windows = cx.windows();
 6094        let next_window =
 6095            SystemWindowTabController::get_next_tab_group_window(cx, current_window_id).or_else(
 6096                || {
 6097                    windows
 6098                        .iter()
 6099                        .cycle()
 6100                        .skip_while(|window| window.window_id() != current_window_id)
 6101                        .nth(1)
 6102                },
 6103            );
 6104
 6105        if let Some(window) = next_window {
 6106            window
 6107                .update(cx, |_, window, _| window.activate_window())
 6108                .ok();
 6109        }
 6110    }
 6111
 6112    pub fn activate_previous_window(&mut self, cx: &mut Context<Self>) {
 6113        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 6114            return;
 6115        };
 6116        let windows = cx.windows();
 6117        let prev_window =
 6118            SystemWindowTabController::get_prev_tab_group_window(cx, current_window_id).or_else(
 6119                || {
 6120                    windows
 6121                        .iter()
 6122                        .rev()
 6123                        .cycle()
 6124                        .skip_while(|window| window.window_id() != current_window_id)
 6125                        .nth(1)
 6126                },
 6127            );
 6128
 6129        if let Some(window) = prev_window {
 6130            window
 6131                .update(cx, |_, window, _| window.activate_window())
 6132                .ok();
 6133        }
 6134    }
 6135
 6136    pub fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
 6137        if cx.stop_active_drag(window) {
 6138        } else if let Some((notification_id, _)) = self.notifications.pop() {
 6139            dismiss_app_notification(&notification_id, cx);
 6140        } else {
 6141            cx.propagate();
 6142        }
 6143    }
 6144
 6145    fn adjust_dock_size_by_px(
 6146        &mut self,
 6147        panel_size: Pixels,
 6148        dock_pos: DockPosition,
 6149        px: Pixels,
 6150        window: &mut Window,
 6151        cx: &mut Context<Self>,
 6152    ) {
 6153        match dock_pos {
 6154            DockPosition::Left => self.resize_left_dock(panel_size + px, window, cx),
 6155            DockPosition::Right => self.resize_right_dock(panel_size + px, window, cx),
 6156            DockPosition::Bottom => self.resize_bottom_dock(panel_size + px, window, cx),
 6157        }
 6158    }
 6159
 6160    fn resize_left_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 6161        let size = new_size.min(self.bounds.right() - RESIZE_HANDLE_SIZE);
 6162
 6163        self.left_dock.update(cx, |left_dock, cx| {
 6164            if WorkspaceSettings::get_global(cx)
 6165                .resize_all_panels_in_dock
 6166                .contains(&DockPosition::Left)
 6167            {
 6168                left_dock.resize_all_panels(Some(size), window, cx);
 6169            } else {
 6170                left_dock.resize_active_panel(Some(size), window, cx);
 6171            }
 6172        });
 6173    }
 6174
 6175    fn resize_right_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 6176        let mut size = new_size.max(self.bounds.left() - RESIZE_HANDLE_SIZE);
 6177        self.left_dock.read_with(cx, |left_dock, cx| {
 6178            let left_dock_size = left_dock
 6179                .active_panel_size(window, cx)
 6180                .unwrap_or(Pixels::ZERO);
 6181            if left_dock_size + size > self.bounds.right() {
 6182                size = self.bounds.right() - left_dock_size
 6183            }
 6184        });
 6185        self.right_dock.update(cx, |right_dock, cx| {
 6186            if WorkspaceSettings::get_global(cx)
 6187                .resize_all_panels_in_dock
 6188                .contains(&DockPosition::Right)
 6189            {
 6190                right_dock.resize_all_panels(Some(size), window, cx);
 6191            } else {
 6192                right_dock.resize_active_panel(Some(size), window, cx);
 6193            }
 6194        });
 6195    }
 6196
 6197    fn resize_bottom_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 6198        let size = new_size.min(self.bounds.bottom() - RESIZE_HANDLE_SIZE - self.bounds.top());
 6199        self.bottom_dock.update(cx, |bottom_dock, cx| {
 6200            if WorkspaceSettings::get_global(cx)
 6201                .resize_all_panels_in_dock
 6202                .contains(&DockPosition::Bottom)
 6203            {
 6204                bottom_dock.resize_all_panels(Some(size), window, cx);
 6205            } else {
 6206                bottom_dock.resize_active_panel(Some(size), window, cx);
 6207            }
 6208        });
 6209    }
 6210
 6211    fn toggle_edit_predictions_all_files(
 6212        &mut self,
 6213        _: &ToggleEditPrediction,
 6214        _window: &mut Window,
 6215        cx: &mut Context<Self>,
 6216    ) {
 6217        let fs = self.project().read(cx).fs().clone();
 6218        let show_edit_predictions = all_language_settings(None, cx).show_edit_predictions(None, cx);
 6219        update_settings_file(fs, cx, move |file, _| {
 6220            file.project.all_languages.defaults.show_edit_predictions = Some(!show_edit_predictions)
 6221        });
 6222    }
 6223}
 6224
 6225fn leader_border_for_pane(
 6226    follower_states: &HashMap<CollaboratorId, FollowerState>,
 6227    pane: &Entity<Pane>,
 6228    _: &Window,
 6229    cx: &App,
 6230) -> Option<Div> {
 6231    let (leader_id, _follower_state) = follower_states.iter().find_map(|(leader_id, state)| {
 6232        if state.pane() == pane {
 6233            Some((*leader_id, state))
 6234        } else {
 6235            None
 6236        }
 6237    })?;
 6238
 6239    let mut leader_color = match leader_id {
 6240        CollaboratorId::PeerId(leader_peer_id) => {
 6241            let room = ActiveCall::try_global(cx)?.read(cx).room()?.read(cx);
 6242            let leader = room.remote_participant_for_peer_id(leader_peer_id)?;
 6243
 6244            cx.theme()
 6245                .players()
 6246                .color_for_participant(leader.participant_index.0)
 6247                .cursor
 6248        }
 6249        CollaboratorId::Agent => cx.theme().players().agent().cursor,
 6250    };
 6251    leader_color.fade_out(0.3);
 6252    Some(
 6253        div()
 6254            .absolute()
 6255            .size_full()
 6256            .left_0()
 6257            .top_0()
 6258            .border_2()
 6259            .border_color(leader_color),
 6260    )
 6261}
 6262
 6263fn window_bounds_env_override() -> Option<Bounds<Pixels>> {
 6264    ZED_WINDOW_POSITION
 6265        .zip(*ZED_WINDOW_SIZE)
 6266        .map(|(position, size)| Bounds {
 6267            origin: position,
 6268            size,
 6269        })
 6270}
 6271
 6272fn open_items(
 6273    serialized_workspace: Option<SerializedWorkspace>,
 6274    mut project_paths_to_open: Vec<(PathBuf, Option<ProjectPath>)>,
 6275    window: &mut Window,
 6276    cx: &mut Context<Workspace>,
 6277) -> impl 'static + Future<Output = Result<Vec<Option<Result<Box<dyn ItemHandle>>>>>> + use<> {
 6278    let restored_items = serialized_workspace.map(|serialized_workspace| {
 6279        Workspace::load_workspace(
 6280            serialized_workspace,
 6281            project_paths_to_open
 6282                .iter()
 6283                .map(|(_, project_path)| project_path)
 6284                .cloned()
 6285                .collect(),
 6286            window,
 6287            cx,
 6288        )
 6289    });
 6290
 6291    cx.spawn_in(window, async move |workspace, cx| {
 6292        let mut opened_items = Vec::with_capacity(project_paths_to_open.len());
 6293
 6294        if let Some(restored_items) = restored_items {
 6295            let restored_items = restored_items.await?;
 6296
 6297            let restored_project_paths = restored_items
 6298                .iter()
 6299                .filter_map(|item| {
 6300                    cx.update(|_, cx| item.as_ref()?.project_path(cx))
 6301                        .ok()
 6302                        .flatten()
 6303                })
 6304                .collect::<HashSet<_>>();
 6305
 6306            for restored_item in restored_items {
 6307                opened_items.push(restored_item.map(Ok));
 6308            }
 6309
 6310            project_paths_to_open
 6311                .iter_mut()
 6312                .for_each(|(_, project_path)| {
 6313                    if let Some(project_path_to_open) = project_path
 6314                        && restored_project_paths.contains(project_path_to_open)
 6315                    {
 6316                        *project_path = None;
 6317                    }
 6318                });
 6319        } else {
 6320            for _ in 0..project_paths_to_open.len() {
 6321                opened_items.push(None);
 6322            }
 6323        }
 6324        assert!(opened_items.len() == project_paths_to_open.len());
 6325
 6326        let tasks =
 6327            project_paths_to_open
 6328                .into_iter()
 6329                .enumerate()
 6330                .map(|(ix, (abs_path, project_path))| {
 6331                    let workspace = workspace.clone();
 6332                    cx.spawn(async move |cx| {
 6333                        let file_project_path = project_path?;
 6334                        let abs_path_task = workspace.update(cx, |workspace, cx| {
 6335                            workspace.project().update(cx, |project, cx| {
 6336                                project.resolve_abs_path(abs_path.to_string_lossy().as_ref(), cx)
 6337                            })
 6338                        });
 6339
 6340                        // We only want to open file paths here. If one of the items
 6341                        // here is a directory, it was already opened further above
 6342                        // with a `find_or_create_worktree`.
 6343                        if let Ok(task) = abs_path_task
 6344                            && task.await.is_none_or(|p| p.is_file())
 6345                        {
 6346                            return Some((
 6347                                ix,
 6348                                workspace
 6349                                    .update_in(cx, |workspace, window, cx| {
 6350                                        workspace.open_path(
 6351                                            file_project_path,
 6352                                            None,
 6353                                            true,
 6354                                            window,
 6355                                            cx,
 6356                                        )
 6357                                    })
 6358                                    .log_err()?
 6359                                    .await,
 6360                            ));
 6361                        }
 6362                        None
 6363                    })
 6364                });
 6365
 6366        let tasks = tasks.collect::<Vec<_>>();
 6367
 6368        let tasks = futures::future::join_all(tasks);
 6369        for (ix, path_open_result) in tasks.await.into_iter().flatten() {
 6370            opened_items[ix] = Some(path_open_result);
 6371        }
 6372
 6373        Ok(opened_items)
 6374    })
 6375}
 6376
 6377enum ActivateInDirectionTarget {
 6378    Pane(Entity<Pane>),
 6379    Dock(Entity<Dock>),
 6380}
 6381
 6382fn notify_if_database_failed(workspace: WindowHandle<Workspace>, cx: &mut AsyncApp) {
 6383    workspace
 6384        .update(cx, |workspace, _, cx| {
 6385            if (*db::ALL_FILE_DB_FAILED).load(std::sync::atomic::Ordering::Acquire) {
 6386                struct DatabaseFailedNotification;
 6387
 6388                workspace.show_notification(
 6389                    NotificationId::unique::<DatabaseFailedNotification>(),
 6390                    cx,
 6391                    |cx| {
 6392                        cx.new(|cx| {
 6393                            MessageNotification::new("Failed to load the database file.", cx)
 6394                                .primary_message("File an Issue")
 6395                                .primary_icon(IconName::Plus)
 6396                                .primary_on_click(|window, cx| {
 6397                                    window.dispatch_action(Box::new(FileBugReport), cx)
 6398                                })
 6399                        })
 6400                    },
 6401                );
 6402            }
 6403        })
 6404        .log_err();
 6405}
 6406
 6407fn px_with_ui_font_fallback(val: u32, cx: &Context<Workspace>) -> Pixels {
 6408    if val == 0 {
 6409        ThemeSettings::get_global(cx).ui_font_size(cx)
 6410    } else {
 6411        px(val as f32)
 6412    }
 6413}
 6414
 6415fn adjust_active_dock_size_by_px(
 6416    px: Pixels,
 6417    workspace: &mut Workspace,
 6418    window: &mut Window,
 6419    cx: &mut Context<Workspace>,
 6420) {
 6421    let Some(active_dock) = workspace
 6422        .all_docks()
 6423        .into_iter()
 6424        .find(|dock| dock.focus_handle(cx).contains_focused(window, cx))
 6425    else {
 6426        return;
 6427    };
 6428    let dock = active_dock.read(cx);
 6429    let Some(panel_size) = dock.active_panel_size(window, cx) else {
 6430        return;
 6431    };
 6432    let dock_pos = dock.position();
 6433    workspace.adjust_dock_size_by_px(panel_size, dock_pos, px, window, cx);
 6434}
 6435
 6436fn adjust_open_docks_size_by_px(
 6437    px: Pixels,
 6438    workspace: &mut Workspace,
 6439    window: &mut Window,
 6440    cx: &mut Context<Workspace>,
 6441) {
 6442    let docks = workspace
 6443        .all_docks()
 6444        .into_iter()
 6445        .filter_map(|dock| {
 6446            if dock.read(cx).is_open() {
 6447                let dock = dock.read(cx);
 6448                let panel_size = dock.active_panel_size(window, cx)?;
 6449                let dock_pos = dock.position();
 6450                Some((panel_size, dock_pos, px))
 6451            } else {
 6452                None
 6453            }
 6454        })
 6455        .collect::<Vec<_>>();
 6456
 6457    docks
 6458        .into_iter()
 6459        .for_each(|(panel_size, dock_pos, offset)| {
 6460            workspace.adjust_dock_size_by_px(panel_size, dock_pos, offset, window, cx);
 6461        });
 6462}
 6463
 6464impl Focusable for Workspace {
 6465    fn focus_handle(&self, cx: &App) -> FocusHandle {
 6466        self.active_pane.focus_handle(cx)
 6467    }
 6468}
 6469
 6470#[derive(Clone)]
 6471struct DraggedDock(DockPosition);
 6472
 6473impl Render for DraggedDock {
 6474    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
 6475        gpui::Empty
 6476    }
 6477}
 6478
 6479impl Render for Workspace {
 6480    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 6481        static FIRST_PAINT: AtomicBool = AtomicBool::new(true);
 6482        if FIRST_PAINT.swap(false, std::sync::atomic::Ordering::Relaxed) {
 6483            log::info!("Rendered first frame");
 6484        }
 6485        let mut context = KeyContext::new_with_defaults();
 6486        context.add("Workspace");
 6487        context.set("keyboard_layout", cx.keyboard_layout().name().to_string());
 6488        if let Some(status) = self
 6489            .debugger_provider
 6490            .as_ref()
 6491            .and_then(|provider| provider.active_thread_state(cx))
 6492        {
 6493            match status {
 6494                ThreadStatus::Running | ThreadStatus::Stepping => {
 6495                    context.add("debugger_running");
 6496                }
 6497                ThreadStatus::Stopped => context.add("debugger_stopped"),
 6498                ThreadStatus::Exited | ThreadStatus::Ended => {}
 6499            }
 6500        }
 6501
 6502        if self.left_dock.read(cx).is_open() {
 6503            if let Some(active_panel) = self.left_dock.read(cx).active_panel() {
 6504                context.set("left_dock", active_panel.panel_key());
 6505            }
 6506        }
 6507
 6508        if self.right_dock.read(cx).is_open() {
 6509            if let Some(active_panel) = self.right_dock.read(cx).active_panel() {
 6510                context.set("right_dock", active_panel.panel_key());
 6511            }
 6512        }
 6513
 6514        if self.bottom_dock.read(cx).is_open() {
 6515            if let Some(active_panel) = self.bottom_dock.read(cx).active_panel() {
 6516                context.set("bottom_dock", active_panel.panel_key());
 6517            }
 6518        }
 6519
 6520        let centered_layout = self.centered_layout
 6521            && self.center.panes().len() == 1
 6522            && self.active_item(cx).is_some();
 6523        let render_padding = |size| {
 6524            (size > 0.0).then(|| {
 6525                div()
 6526                    .h_full()
 6527                    .w(relative(size))
 6528                    .bg(cx.theme().colors().editor_background)
 6529                    .border_color(cx.theme().colors().pane_group_border)
 6530            })
 6531        };
 6532        let paddings = if centered_layout {
 6533            let settings = WorkspaceSettings::get_global(cx).centered_layout;
 6534            (
 6535                render_padding(Self::adjust_padding(
 6536                    settings.left_padding.map(|padding| padding.0),
 6537                )),
 6538                render_padding(Self::adjust_padding(
 6539                    settings.right_padding.map(|padding| padding.0),
 6540                )),
 6541            )
 6542        } else {
 6543            (None, None)
 6544        };
 6545        let ui_font = theme::setup_ui_font(window, cx);
 6546
 6547        let theme = cx.theme().clone();
 6548        let colors = theme.colors();
 6549        let notification_entities = self
 6550            .notifications
 6551            .iter()
 6552            .map(|(_, notification)| notification.entity_id())
 6553            .collect::<Vec<_>>();
 6554        let bottom_dock_layout = WorkspaceSettings::get_global(cx).bottom_dock_layout;
 6555
 6556        client_side_decorations(
 6557            self.actions(div(), window, cx)
 6558                .key_context(context)
 6559                .relative()
 6560                .size_full()
 6561                .flex()
 6562                .flex_col()
 6563                .font(ui_font)
 6564                .gap_0()
 6565                .justify_start()
 6566                .items_start()
 6567                .text_color(colors.text)
 6568                .overflow_hidden()
 6569                .children(self.titlebar_item.clone())
 6570                .on_modifiers_changed(move |_, _, cx| {
 6571                    for &id in &notification_entities {
 6572                        cx.notify(id);
 6573                    }
 6574                })
 6575                .child(
 6576                    div()
 6577                        .size_full()
 6578                        .relative()
 6579                        .flex_1()
 6580                        .flex()
 6581                        .flex_col()
 6582                        .child(
 6583                            div()
 6584                                .id("workspace")
 6585                                .bg(colors.background)
 6586                                .relative()
 6587                                .flex_1()
 6588                                .w_full()
 6589                                .flex()
 6590                                .flex_col()
 6591                                .overflow_hidden()
 6592                                .border_t_1()
 6593                                .border_b_1()
 6594                                .border_color(colors.border)
 6595                                .child({
 6596                                    let this = cx.entity();
 6597                                    canvas(
 6598                                        move |bounds, window, cx| {
 6599                                            this.update(cx, |this, cx| {
 6600                                                let bounds_changed = this.bounds != bounds;
 6601                                                this.bounds = bounds;
 6602
 6603                                                if bounds_changed {
 6604                                                    this.left_dock.update(cx, |dock, cx| {
 6605                                                        dock.clamp_panel_size(
 6606                                                            bounds.size.width,
 6607                                                            window,
 6608                                                            cx,
 6609                                                        )
 6610                                                    });
 6611
 6612                                                    this.right_dock.update(cx, |dock, cx| {
 6613                                                        dock.clamp_panel_size(
 6614                                                            bounds.size.width,
 6615                                                            window,
 6616                                                            cx,
 6617                                                        )
 6618                                                    });
 6619
 6620                                                    this.bottom_dock.update(cx, |dock, cx| {
 6621                                                        dock.clamp_panel_size(
 6622                                                            bounds.size.height,
 6623                                                            window,
 6624                                                            cx,
 6625                                                        )
 6626                                                    });
 6627                                                }
 6628                                            })
 6629                                        },
 6630                                        |_, _, _, _| {},
 6631                                    )
 6632                                    .absolute()
 6633                                    .size_full()
 6634                                })
 6635                                .when(self.zoomed.is_none(), |this| {
 6636                                    this.on_drag_move(cx.listener(
 6637                                        move |workspace,
 6638                                              e: &DragMoveEvent<DraggedDock>,
 6639                                              window,
 6640                                              cx| {
 6641                                            if workspace.previous_dock_drag_coordinates
 6642                                                != Some(e.event.position)
 6643                                            {
 6644                                                workspace.previous_dock_drag_coordinates =
 6645                                                    Some(e.event.position);
 6646                                                match e.drag(cx).0 {
 6647                                                    DockPosition::Left => {
 6648                                                        workspace.resize_left_dock(
 6649                                                            e.event.position.x
 6650                                                                - workspace.bounds.left(),
 6651                                                            window,
 6652                                                            cx,
 6653                                                        );
 6654                                                    }
 6655                                                    DockPosition::Right => {
 6656                                                        workspace.resize_right_dock(
 6657                                                            workspace.bounds.right()
 6658                                                                - e.event.position.x,
 6659                                                            window,
 6660                                                            cx,
 6661                                                        );
 6662                                                    }
 6663                                                    DockPosition::Bottom => {
 6664                                                        workspace.resize_bottom_dock(
 6665                                                            workspace.bounds.bottom()
 6666                                                                - e.event.position.y,
 6667                                                            window,
 6668                                                            cx,
 6669                                                        );
 6670                                                    }
 6671                                                };
 6672                                                workspace.serialize_workspace(window, cx);
 6673                                            }
 6674                                        },
 6675                                    ))
 6676                                })
 6677                                .child({
 6678                                    match bottom_dock_layout {
 6679                                        BottomDockLayout::Full => div()
 6680                                            .flex()
 6681                                            .flex_col()
 6682                                            .h_full()
 6683                                            .child(
 6684                                                div()
 6685                                                    .flex()
 6686                                                    .flex_row()
 6687                                                    .flex_1()
 6688                                                    .overflow_hidden()
 6689                                                    .children(self.render_dock(
 6690                                                        DockPosition::Left,
 6691                                                        &self.left_dock,
 6692                                                        window,
 6693                                                        cx,
 6694                                                    ))
 6695                                                    .child(
 6696                                                        div()
 6697                                                            .flex()
 6698                                                            .flex_col()
 6699                                                            .flex_1()
 6700                                                            .overflow_hidden()
 6701                                                            .child(
 6702                                                                h_flex()
 6703                                                                    .flex_1()
 6704                                                                    .when_some(
 6705                                                                        paddings.0,
 6706                                                                        |this, p| {
 6707                                                                            this.child(
 6708                                                                                p.border_r_1(),
 6709                                                                            )
 6710                                                                        },
 6711                                                                    )
 6712                                                                    .child(self.center.render(
 6713                                                                        self.zoomed.as_ref(),
 6714                                                                        &PaneRenderContext {
 6715                                                                            follower_states:
 6716                                                                                &self.follower_states,
 6717                                                                            active_call: self.active_call(),
 6718                                                                            active_pane: &self.active_pane,
 6719                                                                            app_state: &self.app_state,
 6720                                                                            project: &self.project,
 6721                                                                            workspace: &self.weak_self,
 6722                                                                        },
 6723                                                                        window,
 6724                                                                        cx,
 6725                                                                    ))
 6726                                                                    .when_some(
 6727                                                                        paddings.1,
 6728                                                                        |this, p| {
 6729                                                                            this.child(
 6730                                                                                p.border_l_1(),
 6731                                                                            )
 6732                                                                        },
 6733                                                                    ),
 6734                                                            ),
 6735                                                    )
 6736                                                    .children(self.render_dock(
 6737                                                        DockPosition::Right,
 6738                                                        &self.right_dock,
 6739                                                        window,
 6740                                                        cx,
 6741                                                    )),
 6742                                            )
 6743                                            .child(div().w_full().children(self.render_dock(
 6744                                                DockPosition::Bottom,
 6745                                                &self.bottom_dock,
 6746                                                window,
 6747                                                cx
 6748                                            ))),
 6749
 6750                                        BottomDockLayout::LeftAligned => div()
 6751                                            .flex()
 6752                                            .flex_row()
 6753                                            .h_full()
 6754                                            .child(
 6755                                                div()
 6756                                                    .flex()
 6757                                                    .flex_col()
 6758                                                    .flex_1()
 6759                                                    .h_full()
 6760                                                    .child(
 6761                                                        div()
 6762                                                            .flex()
 6763                                                            .flex_row()
 6764                                                            .flex_1()
 6765                                                            .children(self.render_dock(DockPosition::Left, &self.left_dock, window, cx))
 6766                                                            .child(
 6767                                                                div()
 6768                                                                    .flex()
 6769                                                                    .flex_col()
 6770                                                                    .flex_1()
 6771                                                                    .overflow_hidden()
 6772                                                                    .child(
 6773                                                                        h_flex()
 6774                                                                            .flex_1()
 6775                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6776                                                                            .child(self.center.render(
 6777                                                                                self.zoomed.as_ref(),
 6778                                                                                &PaneRenderContext {
 6779                                                                                    follower_states:
 6780                                                                                        &self.follower_states,
 6781                                                                                    active_call: self.active_call(),
 6782                                                                                    active_pane: &self.active_pane,
 6783                                                                                    app_state: &self.app_state,
 6784                                                                                    project: &self.project,
 6785                                                                                    workspace: &self.weak_self,
 6786                                                                                },
 6787                                                                                window,
 6788                                                                                cx,
 6789                                                                            ))
 6790                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6791                                                                    )
 6792                                                            )
 6793                                                    )
 6794                                                    .child(
 6795                                                        div()
 6796                                                            .w_full()
 6797                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6798                                                    ),
 6799                                            )
 6800                                            .children(self.render_dock(
 6801                                                DockPosition::Right,
 6802                                                &self.right_dock,
 6803                                                window,
 6804                                                cx,
 6805                                            )),
 6806
 6807                                        BottomDockLayout::RightAligned => div()
 6808                                            .flex()
 6809                                            .flex_row()
 6810                                            .h_full()
 6811                                            .children(self.render_dock(
 6812                                                DockPosition::Left,
 6813                                                &self.left_dock,
 6814                                                window,
 6815                                                cx,
 6816                                            ))
 6817                                            .child(
 6818                                                div()
 6819                                                    .flex()
 6820                                                    .flex_col()
 6821                                                    .flex_1()
 6822                                                    .h_full()
 6823                                                    .child(
 6824                                                        div()
 6825                                                            .flex()
 6826                                                            .flex_row()
 6827                                                            .flex_1()
 6828                                                            .child(
 6829                                                                div()
 6830                                                                    .flex()
 6831                                                                    .flex_col()
 6832                                                                    .flex_1()
 6833                                                                    .overflow_hidden()
 6834                                                                    .child(
 6835                                                                        h_flex()
 6836                                                                            .flex_1()
 6837                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6838                                                                            .child(self.center.render(
 6839                                                                                self.zoomed.as_ref(),
 6840                                                                                &PaneRenderContext {
 6841                                                                                    follower_states:
 6842                                                                                        &self.follower_states,
 6843                                                                                    active_call: self.active_call(),
 6844                                                                                    active_pane: &self.active_pane,
 6845                                                                                    app_state: &self.app_state,
 6846                                                                                    project: &self.project,
 6847                                                                                    workspace: &self.weak_self,
 6848                                                                                },
 6849                                                                                window,
 6850                                                                                cx,
 6851                                                                            ))
 6852                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6853                                                                    )
 6854                                                            )
 6855                                                            .children(self.render_dock(DockPosition::Right, &self.right_dock, window, cx))
 6856                                                    )
 6857                                                    .child(
 6858                                                        div()
 6859                                                            .w_full()
 6860                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6861                                                    ),
 6862                                            ),
 6863
 6864                                        BottomDockLayout::Contained => div()
 6865                                            .flex()
 6866                                            .flex_row()
 6867                                            .h_full()
 6868                                            .children(self.render_dock(
 6869                                                DockPosition::Left,
 6870                                                &self.left_dock,
 6871                                                window,
 6872                                                cx,
 6873                                            ))
 6874                                            .child(
 6875                                                div()
 6876                                                    .flex()
 6877                                                    .flex_col()
 6878                                                    .flex_1()
 6879                                                    .overflow_hidden()
 6880                                                    .child(
 6881                                                        h_flex()
 6882                                                            .flex_1()
 6883                                                            .when_some(paddings.0, |this, p| {
 6884                                                                this.child(p.border_r_1())
 6885                                                            })
 6886                                                            .child(self.center.render(
 6887                                                                self.zoomed.as_ref(),
 6888                                                                &PaneRenderContext {
 6889                                                                    follower_states:
 6890                                                                        &self.follower_states,
 6891                                                                    active_call: self.active_call(),
 6892                                                                    active_pane: &self.active_pane,
 6893                                                                    app_state: &self.app_state,
 6894                                                                    project: &self.project,
 6895                                                                    workspace: &self.weak_self,
 6896                                                                },
 6897                                                                window,
 6898                                                                cx,
 6899                                                            ))
 6900                                                            .when_some(paddings.1, |this, p| {
 6901                                                                this.child(p.border_l_1())
 6902                                                            }),
 6903                                                    )
 6904                                                    .children(self.render_dock(
 6905                                                        DockPosition::Bottom,
 6906                                                        &self.bottom_dock,
 6907                                                        window,
 6908                                                        cx,
 6909                                                    )),
 6910                                            )
 6911                                            .children(self.render_dock(
 6912                                                DockPosition::Right,
 6913                                                &self.right_dock,
 6914                                                window,
 6915                                                cx,
 6916                                            )),
 6917                                    }
 6918                                })
 6919                                .children(self.zoomed.as_ref().and_then(|view| {
 6920                                    let zoomed_view = view.upgrade()?;
 6921                                    let div = div()
 6922                                        .occlude()
 6923                                        .absolute()
 6924                                        .overflow_hidden()
 6925                                        .border_color(colors.border)
 6926                                        .bg(colors.background)
 6927                                        .child(zoomed_view)
 6928                                        .inset_0()
 6929                                        .shadow_lg();
 6930
 6931                                    if !WorkspaceSettings::get_global(cx).zoomed_padding {
 6932                                       return Some(div);
 6933                                    }
 6934
 6935                                    Some(match self.zoomed_position {
 6936                                        Some(DockPosition::Left) => div.right_2().border_r_1(),
 6937                                        Some(DockPosition::Right) => div.left_2().border_l_1(),
 6938                                        Some(DockPosition::Bottom) => div.top_2().border_t_1(),
 6939                                        None => {
 6940                                            div.top_2().bottom_2().left_2().right_2().border_1()
 6941                                        }
 6942                                    })
 6943                                }))
 6944                                .children(self.render_notifications(window, cx)),
 6945                        )
 6946                        .when(self.status_bar_visible(cx), |parent| {
 6947                            parent.child(self.status_bar.clone())
 6948                        })
 6949                        .child(self.modal_layer.clone())
 6950                        .child(self.toast_layer.clone()),
 6951                ),
 6952            window,
 6953            cx,
 6954        )
 6955    }
 6956}
 6957
 6958impl WorkspaceStore {
 6959    pub fn new(client: Arc<Client>, cx: &mut Context<Self>) -> Self {
 6960        Self {
 6961            workspaces: Default::default(),
 6962            _subscriptions: vec![
 6963                client.add_request_handler(cx.weak_entity(), Self::handle_follow),
 6964                client.add_message_handler(cx.weak_entity(), Self::handle_update_followers),
 6965            ],
 6966            client,
 6967        }
 6968    }
 6969
 6970    pub fn update_followers(
 6971        &self,
 6972        project_id: Option<u64>,
 6973        update: proto::update_followers::Variant,
 6974        cx: &App,
 6975    ) -> Option<()> {
 6976        let active_call = ActiveCall::try_global(cx)?;
 6977        let room_id = active_call.read(cx).room()?.read(cx).id();
 6978        self.client
 6979            .send(proto::UpdateFollowers {
 6980                room_id,
 6981                project_id,
 6982                variant: Some(update),
 6983            })
 6984            .log_err()
 6985    }
 6986
 6987    pub async fn handle_follow(
 6988        this: Entity<Self>,
 6989        envelope: TypedEnvelope<proto::Follow>,
 6990        mut cx: AsyncApp,
 6991    ) -> Result<proto::FollowResponse> {
 6992        this.update(&mut cx, |this, cx| {
 6993            let follower = Follower {
 6994                project_id: envelope.payload.project_id,
 6995                peer_id: envelope.original_sender_id()?,
 6996            };
 6997
 6998            let mut response = proto::FollowResponse::default();
 6999            this.workspaces.retain(|workspace| {
 7000                workspace
 7001                    .update(cx, |workspace, window, cx| {
 7002                        let handler_response =
 7003                            workspace.handle_follow(follower.project_id, window, cx);
 7004                        if let Some(active_view) = handler_response.active_view
 7005                            && workspace.project.read(cx).remote_id() == follower.project_id
 7006                        {
 7007                            response.active_view = Some(active_view)
 7008                        }
 7009                    })
 7010                    .is_ok()
 7011            });
 7012
 7013            Ok(response)
 7014        })?
 7015    }
 7016
 7017    async fn handle_update_followers(
 7018        this: Entity<Self>,
 7019        envelope: TypedEnvelope<proto::UpdateFollowers>,
 7020        mut cx: AsyncApp,
 7021    ) -> Result<()> {
 7022        let leader_id = envelope.original_sender_id()?;
 7023        let update = envelope.payload;
 7024
 7025        this.update(&mut cx, |this, cx| {
 7026            this.workspaces.retain(|workspace| {
 7027                workspace
 7028                    .update(cx, |workspace, window, cx| {
 7029                        let project_id = workspace.project.read(cx).remote_id();
 7030                        if update.project_id != project_id && update.project_id.is_some() {
 7031                            return;
 7032                        }
 7033                        workspace.handle_update_followers(leader_id, update.clone(), window, cx);
 7034                    })
 7035                    .is_ok()
 7036            });
 7037            Ok(())
 7038        })?
 7039    }
 7040
 7041    pub fn workspaces(&self) -> &HashSet<WindowHandle<Workspace>> {
 7042        &self.workspaces
 7043    }
 7044}
 7045
 7046impl ViewId {
 7047    pub(crate) fn from_proto(message: proto::ViewId) -> Result<Self> {
 7048        Ok(Self {
 7049            creator: message
 7050                .creator
 7051                .map(CollaboratorId::PeerId)
 7052                .context("creator is missing")?,
 7053            id: message.id,
 7054        })
 7055    }
 7056
 7057    pub(crate) fn to_proto(self) -> Option<proto::ViewId> {
 7058        if let CollaboratorId::PeerId(peer_id) = self.creator {
 7059            Some(proto::ViewId {
 7060                creator: Some(peer_id),
 7061                id: self.id,
 7062            })
 7063        } else {
 7064            None
 7065        }
 7066    }
 7067}
 7068
 7069impl FollowerState {
 7070    fn pane(&self) -> &Entity<Pane> {
 7071        self.dock_pane.as_ref().unwrap_or(&self.center_pane)
 7072    }
 7073}
 7074
 7075pub trait WorkspaceHandle {
 7076    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath>;
 7077}
 7078
 7079impl WorkspaceHandle for Entity<Workspace> {
 7080    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath> {
 7081        self.read(cx)
 7082            .worktrees(cx)
 7083            .flat_map(|worktree| {
 7084                let worktree_id = worktree.read(cx).id();
 7085                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
 7086                    worktree_id,
 7087                    path: f.path.clone(),
 7088                })
 7089            })
 7090            .collect::<Vec<_>>()
 7091    }
 7092}
 7093
 7094pub async fn last_opened_workspace_location() -> Option<(SerializedWorkspaceLocation, PathList)> {
 7095    DB.last_workspace().await.log_err().flatten()
 7096}
 7097
 7098pub fn last_session_workspace_locations(
 7099    last_session_id: &str,
 7100    last_session_window_stack: Option<Vec<WindowId>>,
 7101) -> Option<Vec<(SerializedWorkspaceLocation, PathList)>> {
 7102    DB.last_session_workspace_locations(last_session_id, last_session_window_stack)
 7103        .log_err()
 7104}
 7105
 7106actions!(
 7107    collab,
 7108    [
 7109        /// Opens the channel notes for the current call.
 7110        ///
 7111        /// Use `collab_panel::OpenSelectedChannelNotes` to open the channel notes for the selected
 7112        /// channel in the collab panel.
 7113        ///
 7114        /// If you want to open a specific channel, use `zed::OpenZedUrl` with a channel notes URL -
 7115        /// can be copied via "Copy link to section" in the context menu of the channel notes
 7116        /// buffer. These URLs look like `https://zed.dev/channel/channel-name-CHANNEL_ID/notes`.
 7117        OpenChannelNotes,
 7118        /// Mutes your microphone.
 7119        Mute,
 7120        /// Deafens yourself (mute both microphone and speakers).
 7121        Deafen,
 7122        /// Leaves the current call.
 7123        LeaveCall,
 7124        /// Shares the current project with collaborators.
 7125        ShareProject,
 7126        /// Shares your screen with collaborators.
 7127        ScreenShare
 7128    ]
 7129);
 7130actions!(
 7131    zed,
 7132    [
 7133        /// Opens the Zed log file.
 7134        OpenLog,
 7135        /// Reveals the Zed log file in the system file manager.
 7136        RevealLogInFileManager
 7137    ]
 7138);
 7139
 7140async fn join_channel_internal(
 7141    channel_id: ChannelId,
 7142    app_state: &Arc<AppState>,
 7143    requesting_window: Option<WindowHandle<Workspace>>,
 7144    active_call: &Entity<ActiveCall>,
 7145    cx: &mut AsyncApp,
 7146) -> Result<bool> {
 7147    let (should_prompt, open_room) = active_call.update(cx, |active_call, cx| {
 7148        let Some(room) = active_call.room().map(|room| room.read(cx)) else {
 7149            return (false, None);
 7150        };
 7151
 7152        let already_in_channel = room.channel_id() == Some(channel_id);
 7153        let should_prompt = room.is_sharing_project()
 7154            && !room.remote_participants().is_empty()
 7155            && !already_in_channel;
 7156        let open_room = if already_in_channel {
 7157            active_call.room().cloned()
 7158        } else {
 7159            None
 7160        };
 7161        (should_prompt, open_room)
 7162    })?;
 7163
 7164    if let Some(room) = open_room {
 7165        let task = room.update(cx, |room, cx| {
 7166            if let Some((project, host)) = room.most_active_project(cx) {
 7167                return Some(join_in_room_project(project, host, app_state.clone(), cx));
 7168            }
 7169
 7170            None
 7171        })?;
 7172        if let Some(task) = task {
 7173            task.await?;
 7174        }
 7175        return anyhow::Ok(true);
 7176    }
 7177
 7178    if should_prompt {
 7179        if let Some(workspace) = requesting_window {
 7180            let answer = workspace
 7181                .update(cx, |_, window, cx| {
 7182                    window.prompt(
 7183                        PromptLevel::Warning,
 7184                        "Do you want to switch channels?",
 7185                        Some("Leaving this call will unshare your current project."),
 7186                        &["Yes, Join Channel", "Cancel"],
 7187                        cx,
 7188                    )
 7189                })?
 7190                .await;
 7191
 7192            if answer == Ok(1) {
 7193                return Ok(false);
 7194            }
 7195        } else {
 7196            return Ok(false); // unreachable!() hopefully
 7197        }
 7198    }
 7199
 7200    let client = cx.update(|cx| active_call.read(cx).client())?;
 7201
 7202    let mut client_status = client.status();
 7203
 7204    // this loop will terminate within client::CONNECTION_TIMEOUT seconds.
 7205    'outer: loop {
 7206        let Some(status) = client_status.recv().await else {
 7207            anyhow::bail!("error connecting");
 7208        };
 7209
 7210        match status {
 7211            Status::Connecting
 7212            | Status::Authenticating
 7213            | Status::Authenticated
 7214            | Status::Reconnecting
 7215            | Status::Reauthenticating
 7216            | Status::Reauthenticated => continue,
 7217            Status::Connected { .. } => break 'outer,
 7218            Status::SignedOut | Status::AuthenticationError => {
 7219                return Err(ErrorCode::SignedOut.into());
 7220            }
 7221            Status::UpgradeRequired => return Err(ErrorCode::UpgradeRequired.into()),
 7222            Status::ConnectionError | Status::ConnectionLost | Status::ReconnectionError { .. } => {
 7223                return Err(ErrorCode::Disconnected.into());
 7224            }
 7225        }
 7226    }
 7227
 7228    let room = active_call
 7229        .update(cx, |active_call, cx| {
 7230            active_call.join_channel(channel_id, cx)
 7231        })?
 7232        .await?;
 7233
 7234    let Some(room) = room else {
 7235        return anyhow::Ok(true);
 7236    };
 7237
 7238    room.update(cx, |room, _| room.room_update_completed())?
 7239        .await;
 7240
 7241    let task = room.update(cx, |room, cx| {
 7242        if let Some((project, host)) = room.most_active_project(cx) {
 7243            return Some(join_in_room_project(project, host, app_state.clone(), cx));
 7244        }
 7245
 7246        // If you are the first to join a channel, see if you should share your project.
 7247        if room.remote_participants().is_empty()
 7248            && !room.local_participant_is_guest()
 7249            && let Some(workspace) = requesting_window
 7250        {
 7251            let project = workspace.update(cx, |workspace, _, cx| {
 7252                let project = workspace.project.read(cx);
 7253
 7254                if !CallSettings::get_global(cx).share_on_join {
 7255                    return None;
 7256                }
 7257
 7258                if (project.is_local() || project.is_via_remote_server())
 7259                    && project.visible_worktrees(cx).any(|tree| {
 7260                        tree.read(cx)
 7261                            .root_entry()
 7262                            .is_some_and(|entry| entry.is_dir())
 7263                    })
 7264                {
 7265                    Some(workspace.project.clone())
 7266                } else {
 7267                    None
 7268                }
 7269            });
 7270            if let Ok(Some(project)) = project {
 7271                return Some(cx.spawn(async move |room, cx| {
 7272                    room.update(cx, |room, cx| room.share_project(project, cx))?
 7273                        .await?;
 7274                    Ok(())
 7275                }));
 7276            }
 7277        }
 7278
 7279        None
 7280    })?;
 7281    if let Some(task) = task {
 7282        task.await?;
 7283        return anyhow::Ok(true);
 7284    }
 7285    anyhow::Ok(false)
 7286}
 7287
 7288pub fn join_channel(
 7289    channel_id: ChannelId,
 7290    app_state: Arc<AppState>,
 7291    requesting_window: Option<WindowHandle<Workspace>>,
 7292    cx: &mut App,
 7293) -> Task<Result<()>> {
 7294    let active_call = ActiveCall::global(cx);
 7295    cx.spawn(async move |cx| {
 7296        let result = join_channel_internal(
 7297            channel_id,
 7298            &app_state,
 7299            requesting_window,
 7300            &active_call,
 7301             cx,
 7302        )
 7303            .await;
 7304
 7305        // join channel succeeded, and opened a window
 7306        if matches!(result, Ok(true)) {
 7307            return anyhow::Ok(());
 7308        }
 7309
 7310        // find an existing workspace to focus and show call controls
 7311        let mut active_window =
 7312            requesting_window.or_else(|| activate_any_workspace_window( cx));
 7313        if active_window.is_none() {
 7314            // no open workspaces, make one to show the error in (blergh)
 7315            let (window_handle, _) = cx
 7316                .update(|cx| {
 7317                    Workspace::new_local(vec![], app_state.clone(), requesting_window, None, cx)
 7318                })?
 7319                .await?;
 7320
 7321            if result.is_ok() {
 7322                cx.update(|cx| {
 7323                    cx.dispatch_action(&OpenChannelNotes);
 7324                }).log_err();
 7325            }
 7326
 7327            active_window = Some(window_handle);
 7328        }
 7329
 7330        if let Err(err) = result {
 7331            log::error!("failed to join channel: {}", err);
 7332            if let Some(active_window) = active_window {
 7333                active_window
 7334                    .update(cx, |_, window, cx| {
 7335                        let detail: SharedString = match err.error_code() {
 7336                            ErrorCode::SignedOut => {
 7337                                "Please sign in to continue.".into()
 7338                            }
 7339                            ErrorCode::UpgradeRequired => {
 7340                                "Your are running an unsupported version of Zed. Please update to continue.".into()
 7341                            }
 7342                            ErrorCode::NoSuchChannel => {
 7343                                "No matching channel was found. Please check the link and try again.".into()
 7344                            }
 7345                            ErrorCode::Forbidden => {
 7346                                "This channel is private, and you do not have access. Please ask someone to add you and try again.".into()
 7347                            }
 7348                            ErrorCode::Disconnected => "Please check your internet connection and try again.".into(),
 7349                            _ => format!("{}\n\nPlease try again.", err).into(),
 7350                        };
 7351                        window.prompt(
 7352                            PromptLevel::Critical,
 7353                            "Failed to join channel",
 7354                            Some(&detail),
 7355                            &["Ok"],
 7356                        cx)
 7357                    })?
 7358                    .await
 7359                    .ok();
 7360            }
 7361        }
 7362
 7363        // return ok, we showed the error to the user.
 7364        anyhow::Ok(())
 7365    })
 7366}
 7367
 7368pub async fn get_any_active_workspace(
 7369    app_state: Arc<AppState>,
 7370    mut cx: AsyncApp,
 7371) -> anyhow::Result<WindowHandle<Workspace>> {
 7372    // find an existing workspace to focus and show call controls
 7373    let active_window = activate_any_workspace_window(&mut cx);
 7374    if active_window.is_none() {
 7375        cx.update(|cx| Workspace::new_local(vec![], app_state.clone(), None, None, cx))?
 7376            .await?;
 7377    }
 7378    activate_any_workspace_window(&mut cx).context("could not open zed")
 7379}
 7380
 7381fn activate_any_workspace_window(cx: &mut AsyncApp) -> Option<WindowHandle<Workspace>> {
 7382    cx.update(|cx| {
 7383        if let Some(workspace_window) = cx
 7384            .active_window()
 7385            .and_then(|window| window.downcast::<Workspace>())
 7386        {
 7387            return Some(workspace_window);
 7388        }
 7389
 7390        for window in cx.windows() {
 7391            if let Some(workspace_window) = window.downcast::<Workspace>() {
 7392                workspace_window
 7393                    .update(cx, |_, window, _| window.activate_window())
 7394                    .ok();
 7395                return Some(workspace_window);
 7396            }
 7397        }
 7398        None
 7399    })
 7400    .ok()
 7401    .flatten()
 7402}
 7403
 7404pub fn local_workspace_windows(cx: &App) -> Vec<WindowHandle<Workspace>> {
 7405    cx.windows()
 7406        .into_iter()
 7407        .filter_map(|window| window.downcast::<Workspace>())
 7408        .filter(|workspace| {
 7409            workspace
 7410                .read(cx)
 7411                .is_ok_and(|workspace| workspace.project.read(cx).is_local())
 7412        })
 7413        .collect()
 7414}
 7415
 7416#[derive(Default)]
 7417pub struct OpenOptions {
 7418    pub visible: Option<OpenVisible>,
 7419    pub focus: Option<bool>,
 7420    pub open_new_workspace: Option<bool>,
 7421    pub prefer_focused_window: bool,
 7422    pub replace_window: Option<WindowHandle<Workspace>>,
 7423    pub env: Option<HashMap<String, String>>,
 7424}
 7425
 7426#[allow(clippy::type_complexity)]
 7427pub fn open_paths(
 7428    abs_paths: &[PathBuf],
 7429    app_state: Arc<AppState>,
 7430    open_options: OpenOptions,
 7431    cx: &mut App,
 7432) -> Task<
 7433    anyhow::Result<(
 7434        WindowHandle<Workspace>,
 7435        Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 7436    )>,
 7437> {
 7438    let abs_paths = abs_paths.to_vec();
 7439    let mut existing = None;
 7440    let mut best_match = None;
 7441    let mut open_visible = OpenVisible::All;
 7442    #[cfg(target_os = "windows")]
 7443    let wsl_path = abs_paths
 7444        .iter()
 7445        .find_map(|p| util::paths::WslPath::from_path(p));
 7446
 7447    cx.spawn(async move |cx| {
 7448        if open_options.open_new_workspace != Some(true) {
 7449            let all_paths = abs_paths.iter().map(|path| app_state.fs.metadata(path));
 7450            let all_metadatas = futures::future::join_all(all_paths)
 7451                .await
 7452                .into_iter()
 7453                .filter_map(|result| result.ok().flatten())
 7454                .collect::<Vec<_>>();
 7455
 7456            cx.update(|cx| {
 7457                for window in local_workspace_windows(cx) {
 7458                    if let Ok(workspace) = window.read(cx) {
 7459                        let m = workspace.project.read(cx).visibility_for_paths(
 7460                            &abs_paths,
 7461                            &all_metadatas,
 7462                            open_options.open_new_workspace == None,
 7463                            cx,
 7464                        );
 7465                        if m > best_match {
 7466                            existing = Some(window);
 7467                            best_match = m;
 7468                        } else if best_match.is_none()
 7469                            && open_options.open_new_workspace == Some(false)
 7470                        {
 7471                            existing = Some(window)
 7472                        }
 7473                    }
 7474                }
 7475            })?;
 7476
 7477            if open_options.open_new_workspace.is_none()
 7478                && (existing.is_none() || open_options.prefer_focused_window)
 7479                && all_metadatas.iter().all(|file| !file.is_dir)
 7480            {
 7481                cx.update(|cx| {
 7482                    if let Some(window) = cx
 7483                        .active_window()
 7484                        .and_then(|window| window.downcast::<Workspace>())
 7485                        && let Ok(workspace) = window.read(cx)
 7486                    {
 7487                        let project = workspace.project().read(cx);
 7488                        if project.is_local() && !project.is_via_collab() {
 7489                            existing = Some(window);
 7490                            open_visible = OpenVisible::None;
 7491                            return;
 7492                        }
 7493                    }
 7494                    for window in local_workspace_windows(cx) {
 7495                        if let Ok(workspace) = window.read(cx) {
 7496                            let project = workspace.project().read(cx);
 7497                            if project.is_via_collab() {
 7498                                continue;
 7499                            }
 7500                            existing = Some(window);
 7501                            open_visible = OpenVisible::None;
 7502                            break;
 7503                        }
 7504                    }
 7505                })?;
 7506            }
 7507        }
 7508
 7509        let result = if let Some(existing) = existing {
 7510            let open_task = existing
 7511                .update(cx, |workspace, window, cx| {
 7512                    window.activate_window();
 7513                    workspace.open_paths(
 7514                        abs_paths,
 7515                        OpenOptions {
 7516                            visible: Some(open_visible),
 7517                            ..Default::default()
 7518                        },
 7519                        None,
 7520                        window,
 7521                        cx,
 7522                    )
 7523                })?
 7524                .await;
 7525
 7526            _ = existing.update(cx, |workspace, _, cx| {
 7527                for item in open_task.iter().flatten() {
 7528                    if let Err(e) = item {
 7529                        workspace.show_error(&e, cx);
 7530                    }
 7531                }
 7532            });
 7533
 7534            Ok((existing, open_task))
 7535        } else {
 7536            cx.update(move |cx| {
 7537                Workspace::new_local(
 7538                    abs_paths,
 7539                    app_state.clone(),
 7540                    open_options.replace_window,
 7541                    open_options.env,
 7542                    cx,
 7543                )
 7544            })?
 7545            .await
 7546        };
 7547
 7548        #[cfg(target_os = "windows")]
 7549        if let Some(util::paths::WslPath{distro, path}) = wsl_path
 7550            && let Ok((workspace, _)) = &result
 7551        {
 7552            workspace
 7553                .update(cx, move |workspace, _window, cx| {
 7554                    struct OpenInWsl;
 7555                    workspace.show_notification(NotificationId::unique::<OpenInWsl>(), cx, move |cx| {
 7556                        let display_path = util::markdown::MarkdownInlineCode(&path.to_string_lossy());
 7557                        let msg = format!("{display_path} is inside a WSL filesystem, some features may not work unless you open it with WSL remote");
 7558                        cx.new(move |cx| {
 7559                            MessageNotification::new(msg, cx)
 7560                                .primary_message("Open in WSL")
 7561                                .primary_icon(IconName::FolderOpen)
 7562                                .primary_on_click(move |window, cx| {
 7563                                    window.dispatch_action(Box::new(remote::OpenWslPath {
 7564                                            distro: remote::WslConnectionOptions {
 7565                                                    distro_name: distro.clone(),
 7566                                                user: None,
 7567                                            },
 7568                                            paths: vec![path.clone().into()],
 7569                                        }), cx)
 7570                                })
 7571                        })
 7572                    });
 7573                })
 7574                .unwrap();
 7575        };
 7576        result
 7577    })
 7578}
 7579
 7580pub fn open_new(
 7581    open_options: OpenOptions,
 7582    app_state: Arc<AppState>,
 7583    cx: &mut App,
 7584    init: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + 'static + Send,
 7585) -> Task<anyhow::Result<()>> {
 7586    let task = Workspace::new_local(Vec::new(), app_state, None, open_options.env, cx);
 7587    cx.spawn(async move |cx| {
 7588        let (workspace, opened_paths) = task.await?;
 7589        workspace.update(cx, |workspace, window, cx| {
 7590            if opened_paths.is_empty() {
 7591                init(workspace, window, cx)
 7592            }
 7593        })?;
 7594        Ok(())
 7595    })
 7596}
 7597
 7598pub fn create_and_open_local_file(
 7599    path: &'static Path,
 7600    window: &mut Window,
 7601    cx: &mut Context<Workspace>,
 7602    default_content: impl 'static + Send + FnOnce(&mut AsyncApp) -> Rope,
 7603) -> Task<Result<Box<dyn ItemHandle>>> {
 7604    cx.spawn_in(window, async move |workspace, cx| {
 7605        let fs = workspace.read_with(cx, |workspace, _| workspace.app_state().fs.clone())?;
 7606        if !fs.is_file(path).await {
 7607            fs.create_file(path, Default::default()).await?;
 7608            let encoding_wrapper = EncodingWrapper::new(UTF_8);
 7609            fs.save(
 7610                path,
 7611                &default_content(),
 7612                Default::default(),
 7613                encoding_wrapper,
 7614            )
 7615            .await?;
 7616        }
 7617
 7618        let mut items = workspace
 7619            .update_in(cx, |workspace, window, cx| {
 7620                workspace.with_local_workspace(window, cx, |workspace, window, cx| {
 7621                    workspace.open_paths(
 7622                        vec![path.to_path_buf()],
 7623                        OpenOptions {
 7624                            visible: Some(OpenVisible::None),
 7625                            ..Default::default()
 7626                        },
 7627                        None,
 7628                        window,
 7629                        cx,
 7630                    )
 7631                })
 7632            })?
 7633            .await?
 7634            .await;
 7635
 7636        let item = items.pop().flatten();
 7637        item.with_context(|| format!("path {path:?} is not a file"))?
 7638    })
 7639}
 7640
 7641pub fn open_remote_project_with_new_connection(
 7642    window: WindowHandle<Workspace>,
 7643    remote_connection: Arc<dyn RemoteConnection>,
 7644    cancel_rx: oneshot::Receiver<()>,
 7645    delegate: Arc<dyn RemoteClientDelegate>,
 7646    app_state: Arc<AppState>,
 7647    paths: Vec<PathBuf>,
 7648    cx: &mut App,
 7649) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 7650    cx.spawn(async move |cx| {
 7651        let (workspace_id, serialized_workspace) =
 7652            serialize_remote_project(remote_connection.connection_options(), paths.clone(), cx)
 7653                .await?;
 7654
 7655        let session = match cx
 7656            .update(|cx| {
 7657                remote::RemoteClient::new(
 7658                    ConnectionIdentifier::Workspace(workspace_id.0),
 7659                    remote_connection,
 7660                    cancel_rx,
 7661                    delegate,
 7662                    cx,
 7663                )
 7664            })?
 7665            .await?
 7666        {
 7667            Some(result) => result,
 7668            None => return Ok(Vec::new()),
 7669        };
 7670
 7671        let project = cx.update(|cx| {
 7672            project::Project::remote(
 7673                session,
 7674                app_state.client.clone(),
 7675                app_state.node_runtime.clone(),
 7676                app_state.user_store.clone(),
 7677                app_state.languages.clone(),
 7678                app_state.fs.clone(),
 7679                cx,
 7680            )
 7681        })?;
 7682
 7683        open_remote_project_inner(
 7684            project,
 7685            paths,
 7686            workspace_id,
 7687            serialized_workspace,
 7688            app_state,
 7689            window,
 7690            cx,
 7691        )
 7692        .await
 7693    })
 7694}
 7695
 7696pub fn open_remote_project_with_existing_connection(
 7697    connection_options: RemoteConnectionOptions,
 7698    project: Entity<Project>,
 7699    paths: Vec<PathBuf>,
 7700    app_state: Arc<AppState>,
 7701    window: WindowHandle<Workspace>,
 7702    cx: &mut AsyncApp,
 7703) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 7704    cx.spawn(async move |cx| {
 7705        let (workspace_id, serialized_workspace) =
 7706            serialize_remote_project(connection_options.clone(), paths.clone(), cx).await?;
 7707
 7708        open_remote_project_inner(
 7709            project,
 7710            paths,
 7711            workspace_id,
 7712            serialized_workspace,
 7713            app_state,
 7714            window,
 7715            cx,
 7716        )
 7717        .await
 7718    })
 7719}
 7720
 7721async fn open_remote_project_inner(
 7722    project: Entity<Project>,
 7723    paths: Vec<PathBuf>,
 7724    workspace_id: WorkspaceId,
 7725    serialized_workspace: Option<SerializedWorkspace>,
 7726    app_state: Arc<AppState>,
 7727    window: WindowHandle<Workspace>,
 7728    cx: &mut AsyncApp,
 7729) -> Result<Vec<Option<Box<dyn ItemHandle>>>> {
 7730    let toolchains = DB.toolchains(workspace_id).await?;
 7731    for (toolchain, worktree_id, path) in toolchains {
 7732        project
 7733            .update(cx, |this, cx| {
 7734                this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 7735            })?
 7736            .await;
 7737    }
 7738    let mut project_paths_to_open = vec![];
 7739    let mut project_path_errors = vec![];
 7740
 7741    for path in paths {
 7742        let result = cx
 7743            .update(|cx| Workspace::project_path_for_path(project.clone(), &path, true, cx))?
 7744            .await;
 7745        match result {
 7746            Ok((_, project_path)) => {
 7747                project_paths_to_open.push((path.clone(), Some(project_path)));
 7748            }
 7749            Err(error) => {
 7750                project_path_errors.push(error);
 7751            }
 7752        };
 7753    }
 7754
 7755    if project_paths_to_open.is_empty() {
 7756        return Err(project_path_errors.pop().context("no paths given")?);
 7757    }
 7758
 7759    if let Some(detach_session_task) = window
 7760        .update(cx, |_workspace, window, cx| {
 7761            cx.spawn_in(window, async move |this, cx| {
 7762                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))
 7763            })
 7764        })
 7765        .ok()
 7766    {
 7767        detach_session_task.await.ok();
 7768    }
 7769
 7770    cx.update_window(window.into(), |_, window, cx| {
 7771        window.replace_root(cx, |window, cx| {
 7772            telemetry::event!("SSH Project Opened");
 7773
 7774            let mut workspace =
 7775                Workspace::new(Some(workspace_id), project, app_state.clone(), window, cx);
 7776            workspace.update_history(cx);
 7777
 7778            if let Some(ref serialized) = serialized_workspace {
 7779                workspace.centered_layout = serialized.centered_layout;
 7780            }
 7781
 7782            workspace
 7783        });
 7784    })?;
 7785
 7786    let items = window
 7787        .update(cx, |_, window, cx| {
 7788            window.activate_window();
 7789            open_items(serialized_workspace, project_paths_to_open, window, cx)
 7790        })?
 7791        .await?;
 7792
 7793    window.update(cx, |workspace, _, cx| {
 7794        for error in project_path_errors {
 7795            if error.error_code() == proto::ErrorCode::DevServerProjectPathDoesNotExist {
 7796                if let Some(path) = error.error_tag("path") {
 7797                    workspace.show_error(&anyhow!("'{path}' does not exist"), cx)
 7798                }
 7799            } else {
 7800                workspace.show_error(&error, cx)
 7801            }
 7802        }
 7803    })?;
 7804
 7805    Ok(items.into_iter().map(|item| item?.ok()).collect())
 7806}
 7807
 7808fn serialize_remote_project(
 7809    connection_options: RemoteConnectionOptions,
 7810    paths: Vec<PathBuf>,
 7811    cx: &AsyncApp,
 7812) -> Task<Result<(WorkspaceId, Option<SerializedWorkspace>)>> {
 7813    cx.background_spawn(async move {
 7814        let remote_connection_id = persistence::DB
 7815            .get_or_create_remote_connection(connection_options)
 7816            .await?;
 7817
 7818        let serialized_workspace =
 7819            persistence::DB.remote_workspace_for_roots(&paths, remote_connection_id);
 7820
 7821        let workspace_id = if let Some(workspace_id) =
 7822            serialized_workspace.as_ref().map(|workspace| workspace.id)
 7823        {
 7824            workspace_id
 7825        } else {
 7826            persistence::DB.next_id().await?
 7827        };
 7828
 7829        Ok((workspace_id, serialized_workspace))
 7830    })
 7831}
 7832
 7833pub fn join_in_room_project(
 7834    project_id: u64,
 7835    follow_user_id: u64,
 7836    app_state: Arc<AppState>,
 7837    cx: &mut App,
 7838) -> Task<Result<()>> {
 7839    let windows = cx.windows();
 7840    cx.spawn(async move |cx| {
 7841        let existing_workspace = windows.into_iter().find_map(|window_handle| {
 7842            window_handle
 7843                .downcast::<Workspace>()
 7844                .and_then(|window_handle| {
 7845                    window_handle
 7846                        .update(cx, |workspace, _window, cx| {
 7847                            if workspace.project().read(cx).remote_id() == Some(project_id) {
 7848                                Some(window_handle)
 7849                            } else {
 7850                                None
 7851                            }
 7852                        })
 7853                        .unwrap_or(None)
 7854                })
 7855        });
 7856
 7857        let workspace = if let Some(existing_workspace) = existing_workspace {
 7858            existing_workspace
 7859        } else {
 7860            let active_call = cx.update(|cx| ActiveCall::global(cx))?;
 7861            let room = active_call
 7862                .read_with(cx, |call, _| call.room().cloned())?
 7863                .context("not in a call")?;
 7864            let project = room
 7865                .update(cx, |room, cx| {
 7866                    room.join_project(
 7867                        project_id,
 7868                        app_state.languages.clone(),
 7869                        app_state.fs.clone(),
 7870                        cx,
 7871                    )
 7872                })?
 7873                .await?;
 7874
 7875            let window_bounds_override = window_bounds_env_override();
 7876            cx.update(|cx| {
 7877                let mut options = (app_state.build_window_options)(None, cx);
 7878                options.window_bounds = window_bounds_override.map(WindowBounds::Windowed);
 7879                cx.open_window(options, |window, cx| {
 7880                    cx.new(|cx| {
 7881                        Workspace::new(Default::default(), project, app_state.clone(), window, cx)
 7882                    })
 7883                })
 7884            })??
 7885        };
 7886
 7887        workspace.update(cx, |workspace, window, cx| {
 7888            cx.activate(true);
 7889            window.activate_window();
 7890
 7891            if let Some(room) = ActiveCall::global(cx).read(cx).room().cloned() {
 7892                let follow_peer_id = room
 7893                    .read(cx)
 7894                    .remote_participants()
 7895                    .iter()
 7896                    .find(|(_, participant)| participant.user.id == follow_user_id)
 7897                    .map(|(_, p)| p.peer_id)
 7898                    .or_else(|| {
 7899                        // If we couldn't follow the given user, follow the host instead.
 7900                        let collaborator = workspace
 7901                            .project()
 7902                            .read(cx)
 7903                            .collaborators()
 7904                            .values()
 7905                            .find(|collaborator| collaborator.is_host)?;
 7906                        Some(collaborator.peer_id)
 7907                    });
 7908
 7909                if let Some(follow_peer_id) = follow_peer_id {
 7910                    workspace.follow(follow_peer_id, window, cx);
 7911                }
 7912            }
 7913        })?;
 7914
 7915        anyhow::Ok(())
 7916    })
 7917}
 7918
 7919pub fn reload(cx: &mut App) {
 7920    let should_confirm = WorkspaceSettings::get_global(cx).confirm_quit;
 7921    let mut workspace_windows = cx
 7922        .windows()
 7923        .into_iter()
 7924        .filter_map(|window| window.downcast::<Workspace>())
 7925        .collect::<Vec<_>>();
 7926
 7927    // If multiple windows have unsaved changes, and need a save prompt,
 7928    // prompt in the active window before switching to a different window.
 7929    workspace_windows.sort_by_key(|window| window.is_active(cx) == Some(false));
 7930
 7931    let mut prompt = None;
 7932    if let (true, Some(window)) = (should_confirm, workspace_windows.first()) {
 7933        prompt = window
 7934            .update(cx, |_, window, cx| {
 7935                window.prompt(
 7936                    PromptLevel::Info,
 7937                    "Are you sure you want to restart?",
 7938                    None,
 7939                    &["Restart", "Cancel"],
 7940                    cx,
 7941                )
 7942            })
 7943            .ok();
 7944    }
 7945
 7946    cx.spawn(async move |cx| {
 7947        if let Some(prompt) = prompt {
 7948            let answer = prompt.await?;
 7949            if answer != 0 {
 7950                return Ok(());
 7951            }
 7952        }
 7953
 7954        // If the user cancels any save prompt, then keep the app open.
 7955        for window in workspace_windows {
 7956            if let Ok(should_close) = window.update(cx, |workspace, window, cx| {
 7957                workspace.prepare_to_close(CloseIntent::Quit, window, cx)
 7958            }) && !should_close.await?
 7959            {
 7960                return Ok(());
 7961            }
 7962        }
 7963        cx.update(|cx| cx.restart())
 7964    })
 7965    .detach_and_log_err(cx);
 7966}
 7967
 7968fn parse_pixel_position_env_var(value: &str) -> Option<Point<Pixels>> {
 7969    let mut parts = value.split(',');
 7970    let x: usize = parts.next()?.parse().ok()?;
 7971    let y: usize = parts.next()?.parse().ok()?;
 7972    Some(point(px(x as f32), px(y as f32)))
 7973}
 7974
 7975fn parse_pixel_size_env_var(value: &str) -> Option<Size<Pixels>> {
 7976    let mut parts = value.split(',');
 7977    let width: usize = parts.next()?.parse().ok()?;
 7978    let height: usize = parts.next()?.parse().ok()?;
 7979    Some(size(px(width as f32), px(height as f32)))
 7980}
 7981
 7982/// Add client-side decorations (rounded corners, shadows, resize handling) when appropriate.
 7983pub fn client_side_decorations(
 7984    element: impl IntoElement,
 7985    window: &mut Window,
 7986    cx: &mut App,
 7987) -> Stateful<Div> {
 7988    const BORDER_SIZE: Pixels = px(1.0);
 7989    let decorations = window.window_decorations();
 7990
 7991    match decorations {
 7992        Decorations::Client { .. } => window.set_client_inset(theme::CLIENT_SIDE_DECORATION_SHADOW),
 7993        Decorations::Server => window.set_client_inset(px(0.0)),
 7994    }
 7995
 7996    struct GlobalResizeEdge(ResizeEdge);
 7997    impl Global for GlobalResizeEdge {}
 7998
 7999    div()
 8000        .id("window-backdrop")
 8001        .bg(transparent_black())
 8002        .map(|div| match decorations {
 8003            Decorations::Server => div,
 8004            Decorations::Client { tiling, .. } => div
 8005                .when(!(tiling.top || tiling.right), |div| {
 8006                    div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8007                })
 8008                .when(!(tiling.top || tiling.left), |div| {
 8009                    div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8010                })
 8011                .when(!(tiling.bottom || tiling.right), |div| {
 8012                    div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8013                })
 8014                .when(!(tiling.bottom || tiling.left), |div| {
 8015                    div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8016                })
 8017                .when(!tiling.top, |div| {
 8018                    div.pt(theme::CLIENT_SIDE_DECORATION_SHADOW)
 8019                })
 8020                .when(!tiling.bottom, |div| {
 8021                    div.pb(theme::CLIENT_SIDE_DECORATION_SHADOW)
 8022                })
 8023                .when(!tiling.left, |div| {
 8024                    div.pl(theme::CLIENT_SIDE_DECORATION_SHADOW)
 8025                })
 8026                .when(!tiling.right, |div| {
 8027                    div.pr(theme::CLIENT_SIDE_DECORATION_SHADOW)
 8028                })
 8029                .on_mouse_move(move |e, window, cx| {
 8030                    let size = window.window_bounds().get_bounds().size;
 8031                    let pos = e.position;
 8032
 8033                    let new_edge =
 8034                        resize_edge(pos, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling);
 8035
 8036                    let edge = cx.try_global::<GlobalResizeEdge>();
 8037                    if new_edge != edge.map(|edge| edge.0) {
 8038                        window
 8039                            .window_handle()
 8040                            .update(cx, |workspace, _, cx| {
 8041                                cx.notify(workspace.entity_id());
 8042                            })
 8043                            .ok();
 8044                    }
 8045                })
 8046                .on_mouse_down(MouseButton::Left, move |e, window, _| {
 8047                    let size = window.window_bounds().get_bounds().size;
 8048                    let pos = e.position;
 8049
 8050                    let edge = match resize_edge(
 8051                        pos,
 8052                        theme::CLIENT_SIDE_DECORATION_SHADOW,
 8053                        size,
 8054                        tiling,
 8055                    ) {
 8056                        Some(value) => value,
 8057                        None => return,
 8058                    };
 8059
 8060                    window.start_window_resize(edge);
 8061                }),
 8062        })
 8063        .size_full()
 8064        .child(
 8065            div()
 8066                .cursor(CursorStyle::Arrow)
 8067                .map(|div| match decorations {
 8068                    Decorations::Server => div,
 8069                    Decorations::Client { tiling } => div
 8070                        .border_color(cx.theme().colors().border)
 8071                        .when(!(tiling.top || tiling.right), |div| {
 8072                            div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8073                        })
 8074                        .when(!(tiling.top || tiling.left), |div| {
 8075                            div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8076                        })
 8077                        .when(!(tiling.bottom || tiling.right), |div| {
 8078                            div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8079                        })
 8080                        .when(!(tiling.bottom || tiling.left), |div| {
 8081                            div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 8082                        })
 8083                        .when(!tiling.top, |div| div.border_t(BORDER_SIZE))
 8084                        .when(!tiling.bottom, |div| div.border_b(BORDER_SIZE))
 8085                        .when(!tiling.left, |div| div.border_l(BORDER_SIZE))
 8086                        .when(!tiling.right, |div| div.border_r(BORDER_SIZE))
 8087                        .when(!tiling.is_tiled(), |div| {
 8088                            div.shadow(vec![gpui::BoxShadow {
 8089                                color: Hsla {
 8090                                    h: 0.,
 8091                                    s: 0.,
 8092                                    l: 0.,
 8093                                    a: 0.4,
 8094                                },
 8095                                blur_radius: theme::CLIENT_SIDE_DECORATION_SHADOW / 2.,
 8096                                spread_radius: px(0.),
 8097                                offset: point(px(0.0), px(0.0)),
 8098                            }])
 8099                        }),
 8100                })
 8101                .on_mouse_move(|_e, _, cx| {
 8102                    cx.stop_propagation();
 8103                })
 8104                .size_full()
 8105                .child(element),
 8106        )
 8107        .map(|div| match decorations {
 8108            Decorations::Server => div,
 8109            Decorations::Client { tiling, .. } => div.child(
 8110                canvas(
 8111                    |_bounds, window, _| {
 8112                        window.insert_hitbox(
 8113                            Bounds::new(
 8114                                point(px(0.0), px(0.0)),
 8115                                window.window_bounds().get_bounds().size,
 8116                            ),
 8117                            HitboxBehavior::Normal,
 8118                        )
 8119                    },
 8120                    move |_bounds, hitbox, window, cx| {
 8121                        let mouse = window.mouse_position();
 8122                        let size = window.window_bounds().get_bounds().size;
 8123                        let Some(edge) =
 8124                            resize_edge(mouse, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling)
 8125                        else {
 8126                            return;
 8127                        };
 8128                        cx.set_global(GlobalResizeEdge(edge));
 8129                        window.set_cursor_style(
 8130                            match edge {
 8131                                ResizeEdge::Top | ResizeEdge::Bottom => CursorStyle::ResizeUpDown,
 8132                                ResizeEdge::Left | ResizeEdge::Right => {
 8133                                    CursorStyle::ResizeLeftRight
 8134                                }
 8135                                ResizeEdge::TopLeft | ResizeEdge::BottomRight => {
 8136                                    CursorStyle::ResizeUpLeftDownRight
 8137                                }
 8138                                ResizeEdge::TopRight | ResizeEdge::BottomLeft => {
 8139                                    CursorStyle::ResizeUpRightDownLeft
 8140                                }
 8141                            },
 8142                            &hitbox,
 8143                        );
 8144                    },
 8145                )
 8146                .size_full()
 8147                .absolute(),
 8148            ),
 8149        })
 8150}
 8151
 8152fn resize_edge(
 8153    pos: Point<Pixels>,
 8154    shadow_size: Pixels,
 8155    window_size: Size<Pixels>,
 8156    tiling: Tiling,
 8157) -> Option<ResizeEdge> {
 8158    let bounds = Bounds::new(Point::default(), window_size).inset(shadow_size * 1.5);
 8159    if bounds.contains(&pos) {
 8160        return None;
 8161    }
 8162
 8163    let corner_size = size(shadow_size * 1.5, shadow_size * 1.5);
 8164    let top_left_bounds = Bounds::new(Point::new(px(0.), px(0.)), corner_size);
 8165    if !tiling.top && top_left_bounds.contains(&pos) {
 8166        return Some(ResizeEdge::TopLeft);
 8167    }
 8168
 8169    let top_right_bounds = Bounds::new(
 8170        Point::new(window_size.width - corner_size.width, px(0.)),
 8171        corner_size,
 8172    );
 8173    if !tiling.top && top_right_bounds.contains(&pos) {
 8174        return Some(ResizeEdge::TopRight);
 8175    }
 8176
 8177    let bottom_left_bounds = Bounds::new(
 8178        Point::new(px(0.), window_size.height - corner_size.height),
 8179        corner_size,
 8180    );
 8181    if !tiling.bottom && bottom_left_bounds.contains(&pos) {
 8182        return Some(ResizeEdge::BottomLeft);
 8183    }
 8184
 8185    let bottom_right_bounds = Bounds::new(
 8186        Point::new(
 8187            window_size.width - corner_size.width,
 8188            window_size.height - corner_size.height,
 8189        ),
 8190        corner_size,
 8191    );
 8192    if !tiling.bottom && bottom_right_bounds.contains(&pos) {
 8193        return Some(ResizeEdge::BottomRight);
 8194    }
 8195
 8196    if !tiling.top && pos.y < shadow_size {
 8197        Some(ResizeEdge::Top)
 8198    } else if !tiling.bottom && pos.y > window_size.height - shadow_size {
 8199        Some(ResizeEdge::Bottom)
 8200    } else if !tiling.left && pos.x < shadow_size {
 8201        Some(ResizeEdge::Left)
 8202    } else if !tiling.right && pos.x > window_size.width - shadow_size {
 8203        Some(ResizeEdge::Right)
 8204    } else {
 8205        None
 8206    }
 8207}
 8208
 8209fn join_pane_into_active(
 8210    active_pane: &Entity<Pane>,
 8211    pane: &Entity<Pane>,
 8212    window: &mut Window,
 8213    cx: &mut App,
 8214) {
 8215    if pane == active_pane {
 8216    } else if pane.read(cx).items_len() == 0 {
 8217        pane.update(cx, |_, cx| {
 8218            cx.emit(pane::Event::Remove {
 8219                focus_on_pane: None,
 8220            });
 8221        })
 8222    } else {
 8223        move_all_items(pane, active_pane, window, cx);
 8224    }
 8225}
 8226
 8227fn move_all_items(
 8228    from_pane: &Entity<Pane>,
 8229    to_pane: &Entity<Pane>,
 8230    window: &mut Window,
 8231    cx: &mut App,
 8232) {
 8233    let destination_is_different = from_pane != to_pane;
 8234    let mut moved_items = 0;
 8235    for (item_ix, item_handle) in from_pane
 8236        .read(cx)
 8237        .items()
 8238        .enumerate()
 8239        .map(|(ix, item)| (ix, item.clone()))
 8240        .collect::<Vec<_>>()
 8241    {
 8242        let ix = item_ix - moved_items;
 8243        if destination_is_different {
 8244            // Close item from previous pane
 8245            from_pane.update(cx, |source, cx| {
 8246                source.remove_item_and_focus_on_pane(ix, false, to_pane.clone(), window, cx);
 8247            });
 8248            moved_items += 1;
 8249        }
 8250
 8251        // This automatically removes duplicate items in the pane
 8252        to_pane.update(cx, |destination, cx| {
 8253            destination.add_item(item_handle, true, true, None, window, cx);
 8254            window.focus(&destination.focus_handle(cx))
 8255        });
 8256    }
 8257}
 8258
 8259pub fn move_item(
 8260    source: &Entity<Pane>,
 8261    destination: &Entity<Pane>,
 8262    item_id_to_move: EntityId,
 8263    destination_index: usize,
 8264    activate: bool,
 8265    window: &mut Window,
 8266    cx: &mut App,
 8267) {
 8268    let Some((item_ix, item_handle)) = source
 8269        .read(cx)
 8270        .items()
 8271        .enumerate()
 8272        .find(|(_, item_handle)| item_handle.item_id() == item_id_to_move)
 8273        .map(|(ix, item)| (ix, item.clone()))
 8274    else {
 8275        // Tab was closed during drag
 8276        return;
 8277    };
 8278
 8279    if source != destination {
 8280        // Close item from previous pane
 8281        source.update(cx, |source, cx| {
 8282            source.remove_item_and_focus_on_pane(item_ix, false, destination.clone(), window, cx);
 8283        });
 8284    }
 8285
 8286    // This automatically removes duplicate items in the pane
 8287    destination.update(cx, |destination, cx| {
 8288        destination.add_item_inner(
 8289            item_handle,
 8290            activate,
 8291            activate,
 8292            activate,
 8293            Some(destination_index),
 8294            window,
 8295            cx,
 8296        );
 8297        if activate {
 8298            window.focus(&destination.focus_handle(cx))
 8299        }
 8300    });
 8301}
 8302
 8303pub fn move_active_item(
 8304    source: &Entity<Pane>,
 8305    destination: &Entity<Pane>,
 8306    focus_destination: bool,
 8307    close_if_empty: bool,
 8308    window: &mut Window,
 8309    cx: &mut App,
 8310) {
 8311    if source == destination {
 8312        return;
 8313    }
 8314    let Some(active_item) = source.read(cx).active_item() else {
 8315        return;
 8316    };
 8317    source.update(cx, |source_pane, cx| {
 8318        let item_id = active_item.item_id();
 8319        source_pane.remove_item(item_id, false, close_if_empty, window, cx);
 8320        destination.update(cx, |target_pane, cx| {
 8321            target_pane.add_item(
 8322                active_item,
 8323                focus_destination,
 8324                focus_destination,
 8325                Some(target_pane.items_len()),
 8326                window,
 8327                cx,
 8328            );
 8329        });
 8330    });
 8331}
 8332
 8333pub fn clone_active_item(
 8334    workspace_id: Option<WorkspaceId>,
 8335    source: &Entity<Pane>,
 8336    destination: &Entity<Pane>,
 8337    focus_destination: bool,
 8338    window: &mut Window,
 8339    cx: &mut App,
 8340) {
 8341    if source == destination {
 8342        return;
 8343    }
 8344    let Some(active_item) = source.read(cx).active_item() else {
 8345        return;
 8346    };
 8347    if !active_item.can_split(cx) {
 8348        return;
 8349    }
 8350    let destination = destination.downgrade();
 8351    let task = active_item.clone_on_split(workspace_id, window, cx);
 8352    window
 8353        .spawn(cx, async move |cx| {
 8354            let Some(clone) = task.await else {
 8355                return;
 8356            };
 8357            destination
 8358                .update_in(cx, |target_pane, window, cx| {
 8359                    target_pane.add_item(
 8360                        clone,
 8361                        focus_destination,
 8362                        focus_destination,
 8363                        Some(target_pane.items_len()),
 8364                        window,
 8365                        cx,
 8366                    );
 8367                })
 8368                .log_err();
 8369        })
 8370        .detach();
 8371}
 8372
 8373#[derive(Debug)]
 8374pub struct WorkspacePosition {
 8375    pub window_bounds: Option<WindowBounds>,
 8376    pub display: Option<Uuid>,
 8377    pub centered_layout: bool,
 8378}
 8379
 8380pub fn remote_workspace_position_from_db(
 8381    connection_options: RemoteConnectionOptions,
 8382    paths_to_open: &[PathBuf],
 8383    cx: &App,
 8384) -> Task<Result<WorkspacePosition>> {
 8385    let paths = paths_to_open.to_vec();
 8386
 8387    cx.background_spawn(async move {
 8388        let remote_connection_id = persistence::DB
 8389            .get_or_create_remote_connection(connection_options)
 8390            .await
 8391            .context("fetching serialized ssh project")?;
 8392        let serialized_workspace =
 8393            persistence::DB.remote_workspace_for_roots(&paths, remote_connection_id);
 8394
 8395        let (window_bounds, display) = if let Some(bounds) = window_bounds_env_override() {
 8396            (Some(WindowBounds::Windowed(bounds)), None)
 8397        } else {
 8398            let restorable_bounds = serialized_workspace
 8399                .as_ref()
 8400                .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 8401                .or_else(|| {
 8402                    let (display, window_bounds) = DB.last_window().log_err()?;
 8403                    Some((display?, window_bounds?))
 8404                });
 8405
 8406            if let Some((serialized_display, serialized_status)) = restorable_bounds {
 8407                (Some(serialized_status.0), Some(serialized_display))
 8408            } else {
 8409                (None, None)
 8410            }
 8411        };
 8412
 8413        let centered_layout = serialized_workspace
 8414            .as_ref()
 8415            .map(|w| w.centered_layout)
 8416            .unwrap_or(false);
 8417
 8418        Ok(WorkspacePosition {
 8419            window_bounds,
 8420            display,
 8421            centered_layout,
 8422        })
 8423    })
 8424}
 8425
 8426pub fn with_active_or_new_workspace(
 8427    cx: &mut App,
 8428    f: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send + 'static,
 8429) {
 8430    match cx.active_window().and_then(|w| w.downcast::<Workspace>()) {
 8431        Some(workspace) => {
 8432            cx.defer(move |cx| {
 8433                workspace
 8434                    .update(cx, |workspace, window, cx| f(workspace, window, cx))
 8435                    .log_err();
 8436            });
 8437        }
 8438        None => {
 8439            let app_state = AppState::global(cx);
 8440            if let Some(app_state) = app_state.upgrade() {
 8441                open_new(
 8442                    OpenOptions::default(),
 8443                    app_state,
 8444                    cx,
 8445                    move |workspace, window, cx| f(workspace, window, cx),
 8446                )
 8447                .detach_and_log_err(cx);
 8448            }
 8449        }
 8450    }
 8451}
 8452
 8453#[cfg(test)]
 8454mod tests {
 8455    use std::{cell::RefCell, rc::Rc};
 8456
 8457    use super::*;
 8458    use crate::{
 8459        dock::{PanelEvent, test::TestPanel},
 8460        item::{
 8461            ItemBufferKind, ItemEvent,
 8462            test::{TestItem, TestProjectItem},
 8463        },
 8464    };
 8465    use fs::FakeFs;
 8466    use gpui::{
 8467        DismissEvent, Empty, EventEmitter, FocusHandle, Focusable, Render, TestAppContext,
 8468        UpdateGlobal, VisualTestContext, px,
 8469    };
 8470    use project::{Project, ProjectEntryId};
 8471    use serde_json::json;
 8472    use settings::SettingsStore;
 8473    use util::rel_path::rel_path;
 8474
 8475    #[gpui::test]
 8476    async fn test_tab_disambiguation(cx: &mut TestAppContext) {
 8477        init_test(cx);
 8478
 8479        let fs = FakeFs::new(cx.executor());
 8480        let project = Project::test(fs, [], cx).await;
 8481        let (workspace, cx) =
 8482            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8483
 8484        // Adding an item with no ambiguity renders the tab without detail.
 8485        let item1 = cx.new(|cx| {
 8486            let mut item = TestItem::new(cx);
 8487            item.tab_descriptions = Some(vec!["c", "b1/c", "a/b1/c"]);
 8488            item
 8489        });
 8490        workspace.update_in(cx, |workspace, window, cx| {
 8491            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8492        });
 8493        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(0)));
 8494
 8495        // Adding an item that creates ambiguity increases the level of detail on
 8496        // both tabs.
 8497        let item2 = cx.new_window_entity(|_window, cx| {
 8498            let mut item = TestItem::new(cx);
 8499            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8500            item
 8501        });
 8502        workspace.update_in(cx, |workspace, window, cx| {
 8503            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8504        });
 8505        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8506        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8507
 8508        // Adding an item that creates ambiguity increases the level of detail only
 8509        // on the ambiguous tabs. In this case, the ambiguity can't be resolved so
 8510        // we stop at the highest detail available.
 8511        let item3 = cx.new(|cx| {
 8512            let mut item = TestItem::new(cx);
 8513            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8514            item
 8515        });
 8516        workspace.update_in(cx, |workspace, window, cx| {
 8517            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8518        });
 8519        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8520        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8521        item3.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8522    }
 8523
 8524    #[gpui::test]
 8525    async fn test_tracking_active_path(cx: &mut TestAppContext) {
 8526        init_test(cx);
 8527
 8528        let fs = FakeFs::new(cx.executor());
 8529        fs.insert_tree(
 8530            "/root1",
 8531            json!({
 8532                "one.txt": "",
 8533                "two.txt": "",
 8534            }),
 8535        )
 8536        .await;
 8537        fs.insert_tree(
 8538            "/root2",
 8539            json!({
 8540                "three.txt": "",
 8541            }),
 8542        )
 8543        .await;
 8544
 8545        let project = Project::test(fs, ["root1".as_ref()], cx).await;
 8546        let (workspace, cx) =
 8547            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8548        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8549        let worktree_id = project.update(cx, |project, cx| {
 8550            project.worktrees(cx).next().unwrap().read(cx).id()
 8551        });
 8552
 8553        let item1 = cx.new(|cx| {
 8554            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
 8555        });
 8556        let item2 = cx.new(|cx| {
 8557            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "two.txt", cx)])
 8558        });
 8559
 8560        // Add an item to an empty pane
 8561        workspace.update_in(cx, |workspace, window, cx| {
 8562            workspace.add_item_to_active_pane(Box::new(item1), None, true, window, cx)
 8563        });
 8564        project.update(cx, |project, cx| {
 8565            assert_eq!(
 8566                project.active_entry(),
 8567                project
 8568                    .entry_for_path(&(worktree_id, rel_path("one.txt")).into(), cx)
 8569                    .map(|e| e.id)
 8570            );
 8571        });
 8572        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8573
 8574        // Add a second item to a non-empty pane
 8575        workspace.update_in(cx, |workspace, window, cx| {
 8576            workspace.add_item_to_active_pane(Box::new(item2), None, true, window, cx)
 8577        });
 8578        assert_eq!(cx.window_title().as_deref(), Some("root1 — two.txt"));
 8579        project.update(cx, |project, cx| {
 8580            assert_eq!(
 8581                project.active_entry(),
 8582                project
 8583                    .entry_for_path(&(worktree_id, rel_path("two.txt")).into(), cx)
 8584                    .map(|e| e.id)
 8585            );
 8586        });
 8587
 8588        // Close the active item
 8589        pane.update_in(cx, |pane, window, cx| {
 8590            pane.close_active_item(&Default::default(), window, cx)
 8591        })
 8592        .await
 8593        .unwrap();
 8594        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8595        project.update(cx, |project, cx| {
 8596            assert_eq!(
 8597                project.active_entry(),
 8598                project
 8599                    .entry_for_path(&(worktree_id, rel_path("one.txt")).into(), cx)
 8600                    .map(|e| e.id)
 8601            );
 8602        });
 8603
 8604        // Add a project folder
 8605        project
 8606            .update(cx, |project, cx| {
 8607                project.find_or_create_worktree("root2", true, cx)
 8608            })
 8609            .await
 8610            .unwrap();
 8611        assert_eq!(cx.window_title().as_deref(), Some("root1, root2 — one.txt"));
 8612
 8613        // Remove a project folder
 8614        project.update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
 8615        assert_eq!(cx.window_title().as_deref(), Some("root2 — one.txt"));
 8616    }
 8617
 8618    #[gpui::test]
 8619    async fn test_close_window(cx: &mut TestAppContext) {
 8620        init_test(cx);
 8621
 8622        let fs = FakeFs::new(cx.executor());
 8623        fs.insert_tree("/root", json!({ "one": "" })).await;
 8624
 8625        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8626        let (workspace, cx) =
 8627            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8628
 8629        // When there are no dirty items, there's nothing to do.
 8630        let item1 = cx.new(TestItem::new);
 8631        workspace.update_in(cx, |w, window, cx| {
 8632            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx)
 8633        });
 8634        let task = workspace.update_in(cx, |w, window, cx| {
 8635            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8636        });
 8637        assert!(task.await.unwrap());
 8638
 8639        // When there are dirty untitled items, prompt to save each one. If the user
 8640        // cancels any prompt, then abort.
 8641        let item2 = cx.new(|cx| TestItem::new(cx).with_dirty(true));
 8642        let item3 = cx.new(|cx| {
 8643            TestItem::new(cx)
 8644                .with_dirty(true)
 8645                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8646        });
 8647        workspace.update_in(cx, |w, window, cx| {
 8648            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8649            w.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8650        });
 8651        let task = workspace.update_in(cx, |w, window, cx| {
 8652            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8653        });
 8654        cx.executor().run_until_parked();
 8655        cx.simulate_prompt_answer("Cancel"); // cancel save all
 8656        cx.executor().run_until_parked();
 8657        assert!(!cx.has_pending_prompt());
 8658        assert!(!task.await.unwrap());
 8659    }
 8660
 8661    #[gpui::test]
 8662    async fn test_close_window_with_serializable_items(cx: &mut TestAppContext) {
 8663        init_test(cx);
 8664
 8665        // Register TestItem as a serializable item
 8666        cx.update(|cx| {
 8667            register_serializable_item::<TestItem>(cx);
 8668        });
 8669
 8670        let fs = FakeFs::new(cx.executor());
 8671        fs.insert_tree("/root", json!({ "one": "" })).await;
 8672
 8673        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8674        let (workspace, cx) =
 8675            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8676
 8677        // When there are dirty untitled items, but they can serialize, then there is no prompt.
 8678        let item1 = cx.new(|cx| {
 8679            TestItem::new(cx)
 8680                .with_dirty(true)
 8681                .with_serialize(|| Some(Task::ready(Ok(()))))
 8682        });
 8683        let item2 = cx.new(|cx| {
 8684            TestItem::new(cx)
 8685                .with_dirty(true)
 8686                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8687                .with_serialize(|| Some(Task::ready(Ok(()))))
 8688        });
 8689        workspace.update_in(cx, |w, window, cx| {
 8690            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8691            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8692        });
 8693        let task = workspace.update_in(cx, |w, window, cx| {
 8694            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8695        });
 8696        assert!(task.await.unwrap());
 8697    }
 8698
 8699    #[gpui::test]
 8700    async fn test_close_pane_items(cx: &mut TestAppContext) {
 8701        init_test(cx);
 8702
 8703        let fs = FakeFs::new(cx.executor());
 8704
 8705        let project = Project::test(fs, None, cx).await;
 8706        let (workspace, cx) =
 8707            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8708
 8709        let item1 = cx.new(|cx| {
 8710            TestItem::new(cx)
 8711                .with_dirty(true)
 8712                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 8713        });
 8714        let item2 = cx.new(|cx| {
 8715            TestItem::new(cx)
 8716                .with_dirty(true)
 8717                .with_conflict(true)
 8718                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 8719        });
 8720        let item3 = cx.new(|cx| {
 8721            TestItem::new(cx)
 8722                .with_dirty(true)
 8723                .with_conflict(true)
 8724                .with_project_items(&[dirty_project_item(3, "3.txt", cx)])
 8725        });
 8726        let item4 = cx.new(|cx| {
 8727            TestItem::new(cx).with_dirty(true).with_project_items(&[{
 8728                let project_item = TestProjectItem::new_untitled(cx);
 8729                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8730                project_item
 8731            }])
 8732        });
 8733        let pane = workspace.update_in(cx, |workspace, window, cx| {
 8734            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8735            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8736            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8737            workspace.add_item_to_active_pane(Box::new(item4.clone()), None, true, window, cx);
 8738            workspace.active_pane().clone()
 8739        });
 8740
 8741        let close_items = pane.update_in(cx, |pane, window, cx| {
 8742            pane.activate_item(1, true, true, window, cx);
 8743            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8744            let item1_id = item1.item_id();
 8745            let item3_id = item3.item_id();
 8746            let item4_id = item4.item_id();
 8747            pane.close_items(window, cx, SaveIntent::Close, move |id| {
 8748                [item1_id, item3_id, item4_id].contains(&id)
 8749            })
 8750        });
 8751        cx.executor().run_until_parked();
 8752
 8753        assert!(cx.has_pending_prompt());
 8754        cx.simulate_prompt_answer("Save all");
 8755
 8756        cx.executor().run_until_parked();
 8757
 8758        // Item 1 is saved. There's a prompt to save item 3.
 8759        pane.update(cx, |pane, cx| {
 8760            assert_eq!(item1.read(cx).save_count, 1);
 8761            assert_eq!(item1.read(cx).save_as_count, 0);
 8762            assert_eq!(item1.read(cx).reload_count, 0);
 8763            assert_eq!(pane.items_len(), 3);
 8764            assert_eq!(pane.active_item().unwrap().item_id(), item3.item_id());
 8765        });
 8766        assert!(cx.has_pending_prompt());
 8767
 8768        // Cancel saving item 3.
 8769        cx.simulate_prompt_answer("Discard");
 8770        cx.executor().run_until_parked();
 8771
 8772        // Item 3 is reloaded. There's a prompt to save item 4.
 8773        pane.update(cx, |pane, cx| {
 8774            assert_eq!(item3.read(cx).save_count, 0);
 8775            assert_eq!(item3.read(cx).save_as_count, 0);
 8776            assert_eq!(item3.read(cx).reload_count, 1);
 8777            assert_eq!(pane.items_len(), 2);
 8778            assert_eq!(pane.active_item().unwrap().item_id(), item4.item_id());
 8779        });
 8780
 8781        // There's a prompt for a path for item 4.
 8782        cx.simulate_new_path_selection(|_| Some(Default::default()));
 8783        close_items.await.unwrap();
 8784
 8785        // The requested items are closed.
 8786        pane.update(cx, |pane, cx| {
 8787            assert_eq!(item4.read(cx).save_count, 0);
 8788            assert_eq!(item4.read(cx).save_as_count, 1);
 8789            assert_eq!(item4.read(cx).reload_count, 0);
 8790            assert_eq!(pane.items_len(), 1);
 8791            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8792        });
 8793    }
 8794
 8795    #[gpui::test]
 8796    async fn test_prompting_to_save_only_on_last_item_for_entry(cx: &mut TestAppContext) {
 8797        init_test(cx);
 8798
 8799        let fs = FakeFs::new(cx.executor());
 8800        let project = Project::test(fs, [], cx).await;
 8801        let (workspace, cx) =
 8802            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8803
 8804        // Create several workspace items with single project entries, and two
 8805        // workspace items with multiple project entries.
 8806        let single_entry_items = (0..=4)
 8807            .map(|project_entry_id| {
 8808                cx.new(|cx| {
 8809                    TestItem::new(cx)
 8810                        .with_dirty(true)
 8811                        .with_project_items(&[dirty_project_item(
 8812                            project_entry_id,
 8813                            &format!("{project_entry_id}.txt"),
 8814                            cx,
 8815                        )])
 8816                })
 8817            })
 8818            .collect::<Vec<_>>();
 8819        let item_2_3 = cx.new(|cx| {
 8820            TestItem::new(cx)
 8821                .with_dirty(true)
 8822                .with_buffer_kind(ItemBufferKind::Multibuffer)
 8823                .with_project_items(&[
 8824                    single_entry_items[2].read(cx).project_items[0].clone(),
 8825                    single_entry_items[3].read(cx).project_items[0].clone(),
 8826                ])
 8827        });
 8828        let item_3_4 = cx.new(|cx| {
 8829            TestItem::new(cx)
 8830                .with_dirty(true)
 8831                .with_buffer_kind(ItemBufferKind::Multibuffer)
 8832                .with_project_items(&[
 8833                    single_entry_items[3].read(cx).project_items[0].clone(),
 8834                    single_entry_items[4].read(cx).project_items[0].clone(),
 8835                ])
 8836        });
 8837
 8838        // Create two panes that contain the following project entries:
 8839        //   left pane:
 8840        //     multi-entry items:   (2, 3)
 8841        //     single-entry items:  0, 2, 3, 4
 8842        //   right pane:
 8843        //     single-entry items:  4, 1
 8844        //     multi-entry items:   (3, 4)
 8845        let (left_pane, right_pane) = workspace.update_in(cx, |workspace, window, cx| {
 8846            let left_pane = workspace.active_pane().clone();
 8847            workspace.add_item_to_active_pane(Box::new(item_2_3.clone()), None, true, window, cx);
 8848            workspace.add_item_to_active_pane(
 8849                single_entry_items[0].boxed_clone(),
 8850                None,
 8851                true,
 8852                window,
 8853                cx,
 8854            );
 8855            workspace.add_item_to_active_pane(
 8856                single_entry_items[2].boxed_clone(),
 8857                None,
 8858                true,
 8859                window,
 8860                cx,
 8861            );
 8862            workspace.add_item_to_active_pane(
 8863                single_entry_items[3].boxed_clone(),
 8864                None,
 8865                true,
 8866                window,
 8867                cx,
 8868            );
 8869            workspace.add_item_to_active_pane(
 8870                single_entry_items[4].boxed_clone(),
 8871                None,
 8872                true,
 8873                window,
 8874                cx,
 8875            );
 8876
 8877            let right_pane =
 8878                workspace.split_and_clone(left_pane.clone(), SplitDirection::Right, window, cx);
 8879
 8880            let boxed_clone = single_entry_items[1].boxed_clone();
 8881            let right_pane = window.spawn(cx, async move |cx| {
 8882                right_pane.await.inspect(|right_pane| {
 8883                    right_pane
 8884                        .update_in(cx, |pane, window, cx| {
 8885                            pane.add_item(boxed_clone, true, true, None, window, cx);
 8886                            pane.add_item(Box::new(item_3_4.clone()), true, true, None, window, cx);
 8887                        })
 8888                        .unwrap();
 8889                })
 8890            });
 8891
 8892            (left_pane, right_pane)
 8893        });
 8894        let right_pane = right_pane.await.unwrap();
 8895        cx.focus(&right_pane);
 8896
 8897        let mut close = right_pane.update_in(cx, |pane, window, cx| {
 8898            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8899                .unwrap()
 8900        });
 8901        cx.executor().run_until_parked();
 8902
 8903        let msg = cx.pending_prompt().unwrap().0;
 8904        assert!(msg.contains("1.txt"));
 8905        assert!(!msg.contains("2.txt"));
 8906        assert!(!msg.contains("3.txt"));
 8907        assert!(!msg.contains("4.txt"));
 8908
 8909        cx.simulate_prompt_answer("Cancel");
 8910        close.await;
 8911
 8912        left_pane
 8913            .update_in(cx, |left_pane, window, cx| {
 8914                left_pane.close_item_by_id(
 8915                    single_entry_items[3].entity_id(),
 8916                    SaveIntent::Skip,
 8917                    window,
 8918                    cx,
 8919                )
 8920            })
 8921            .await
 8922            .unwrap();
 8923
 8924        close = right_pane.update_in(cx, |pane, window, cx| {
 8925            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8926                .unwrap()
 8927        });
 8928        cx.executor().run_until_parked();
 8929
 8930        let details = cx.pending_prompt().unwrap().1;
 8931        assert!(details.contains("1.txt"));
 8932        assert!(!details.contains("2.txt"));
 8933        assert!(details.contains("3.txt"));
 8934        // ideally this assertion could be made, but today we can only
 8935        // save whole items not project items, so the orphaned item 3 causes
 8936        // 4 to be saved too.
 8937        // assert!(!details.contains("4.txt"));
 8938
 8939        cx.simulate_prompt_answer("Save all");
 8940
 8941        cx.executor().run_until_parked();
 8942        close.await;
 8943        right_pane.read_with(cx, |pane, _| {
 8944            assert_eq!(pane.items_len(), 0);
 8945        });
 8946    }
 8947
 8948    #[gpui::test]
 8949    async fn test_autosave(cx: &mut gpui::TestAppContext) {
 8950        init_test(cx);
 8951
 8952        let fs = FakeFs::new(cx.executor());
 8953        let project = Project::test(fs, [], cx).await;
 8954        let (workspace, cx) =
 8955            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8956        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8957
 8958        let item = cx.new(|cx| {
 8959            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8960        });
 8961        let item_id = item.entity_id();
 8962        workspace.update_in(cx, |workspace, window, cx| {
 8963            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8964        });
 8965
 8966        // Autosave on window change.
 8967        item.update(cx, |item, cx| {
 8968            SettingsStore::update_global(cx, |settings, cx| {
 8969                settings.update_user_settings(cx, |settings| {
 8970                    settings.workspace.autosave = Some(AutosaveSetting::OnWindowChange);
 8971                })
 8972            });
 8973            item.is_dirty = true;
 8974        });
 8975
 8976        // Deactivating the window saves the file.
 8977        cx.deactivate_window();
 8978        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8979
 8980        // Re-activating the window doesn't save the file.
 8981        cx.update(|window, _| window.activate_window());
 8982        cx.executor().run_until_parked();
 8983        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8984
 8985        // Autosave on focus change.
 8986        item.update_in(cx, |item, window, cx| {
 8987            cx.focus_self(window);
 8988            SettingsStore::update_global(cx, |settings, cx| {
 8989                settings.update_user_settings(cx, |settings| {
 8990                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
 8991                })
 8992            });
 8993            item.is_dirty = true;
 8994        });
 8995        // Blurring the item saves the file.
 8996        item.update_in(cx, |_, window, _| window.blur());
 8997        cx.executor().run_until_parked();
 8998        item.read_with(cx, |item, _| assert_eq!(item.save_count, 2));
 8999
 9000        // Deactivating the window still saves the file.
 9001        item.update_in(cx, |item, window, cx| {
 9002            cx.focus_self(window);
 9003            item.is_dirty = true;
 9004        });
 9005        cx.deactivate_window();
 9006        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
 9007
 9008        // Autosave after delay.
 9009        item.update(cx, |item, cx| {
 9010            SettingsStore::update_global(cx, |settings, cx| {
 9011                settings.update_user_settings(cx, |settings| {
 9012                    settings.workspace.autosave = Some(AutosaveSetting::AfterDelay {
 9013                        milliseconds: 500.into(),
 9014                    });
 9015                })
 9016            });
 9017            item.is_dirty = true;
 9018            cx.emit(ItemEvent::Edit);
 9019        });
 9020
 9021        // Delay hasn't fully expired, so the file is still dirty and unsaved.
 9022        cx.executor().advance_clock(Duration::from_millis(250));
 9023        item.read_with(cx, |item, _| assert_eq!(item.save_count, 3));
 9024
 9025        // After delay expires, the file is saved.
 9026        cx.executor().advance_clock(Duration::from_millis(250));
 9027        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
 9028
 9029        // Autosave after delay, should save earlier than delay if tab is closed
 9030        item.update(cx, |item, cx| {
 9031            item.is_dirty = true;
 9032            cx.emit(ItemEvent::Edit);
 9033        });
 9034        cx.executor().advance_clock(Duration::from_millis(250));
 9035        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
 9036
 9037        // // Ensure auto save with delay saves the item on close, even if the timer hasn't yet run out.
 9038        pane.update_in(cx, |pane, window, cx| {
 9039            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 9040        })
 9041        .await
 9042        .unwrap();
 9043        assert!(!cx.has_pending_prompt());
 9044        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 9045
 9046        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
 9047        workspace.update_in(cx, |workspace, window, cx| {
 9048            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 9049        });
 9050        item.update_in(cx, |item, _window, cx| {
 9051            item.is_dirty = true;
 9052            for project_item in &mut item.project_items {
 9053                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 9054            }
 9055        });
 9056        cx.run_until_parked();
 9057        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 9058
 9059        // Autosave on focus change, ensuring closing the tab counts as such.
 9060        item.update(cx, |item, cx| {
 9061            SettingsStore::update_global(cx, |settings, cx| {
 9062                settings.update_user_settings(cx, |settings| {
 9063                    settings.workspace.autosave = Some(AutosaveSetting::OnFocusChange);
 9064                })
 9065            });
 9066            item.is_dirty = true;
 9067            for project_item in &mut item.project_items {
 9068                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 9069            }
 9070        });
 9071
 9072        pane.update_in(cx, |pane, window, cx| {
 9073            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 9074        })
 9075        .await
 9076        .unwrap();
 9077        assert!(!cx.has_pending_prompt());
 9078        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
 9079
 9080        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
 9081        workspace.update_in(cx, |workspace, window, cx| {
 9082            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 9083        });
 9084        item.update_in(cx, |item, window, cx| {
 9085            item.project_items[0].update(cx, |item, _| {
 9086                item.entry_id = None;
 9087            });
 9088            item.is_dirty = true;
 9089            window.blur();
 9090        });
 9091        cx.run_until_parked();
 9092        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
 9093
 9094        // Ensure autosave is prevented for deleted files also when closing the buffer.
 9095        let _close_items = pane.update_in(cx, |pane, window, cx| {
 9096            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 9097        });
 9098        cx.run_until_parked();
 9099        assert!(cx.has_pending_prompt());
 9100        item.read_with(cx, |item, _| assert_eq!(item.save_count, 6));
 9101    }
 9102
 9103    #[gpui::test]
 9104    async fn test_pane_navigation(cx: &mut gpui::TestAppContext) {
 9105        init_test(cx);
 9106
 9107        let fs = FakeFs::new(cx.executor());
 9108
 9109        let project = Project::test(fs, [], cx).await;
 9110        let (workspace, cx) =
 9111            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9112
 9113        let item = cx.new(|cx| {
 9114            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 9115        });
 9116        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9117        let toolbar = pane.read_with(cx, |pane, _| pane.toolbar().clone());
 9118        let toolbar_notify_count = Rc::new(RefCell::new(0));
 9119
 9120        workspace.update_in(cx, |workspace, window, cx| {
 9121            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 9122            let toolbar_notification_count = toolbar_notify_count.clone();
 9123            cx.observe_in(&toolbar, window, move |_, _, _, _| {
 9124                *toolbar_notification_count.borrow_mut() += 1
 9125            })
 9126            .detach();
 9127        });
 9128
 9129        pane.read_with(cx, |pane, _| {
 9130            assert!(!pane.can_navigate_backward());
 9131            assert!(!pane.can_navigate_forward());
 9132        });
 9133
 9134        item.update_in(cx, |item, _, cx| {
 9135            item.set_state("one".to_string(), cx);
 9136        });
 9137
 9138        // Toolbar must be notified to re-render the navigation buttons
 9139        assert_eq!(*toolbar_notify_count.borrow(), 1);
 9140
 9141        pane.read_with(cx, |pane, _| {
 9142            assert!(pane.can_navigate_backward());
 9143            assert!(!pane.can_navigate_forward());
 9144        });
 9145
 9146        workspace
 9147            .update_in(cx, |workspace, window, cx| {
 9148                workspace.go_back(pane.downgrade(), window, cx)
 9149            })
 9150            .await
 9151            .unwrap();
 9152
 9153        assert_eq!(*toolbar_notify_count.borrow(), 2);
 9154        pane.read_with(cx, |pane, _| {
 9155            assert!(!pane.can_navigate_backward());
 9156            assert!(pane.can_navigate_forward());
 9157        });
 9158    }
 9159
 9160    #[gpui::test]
 9161    async fn test_toggle_docks_and_panels(cx: &mut gpui::TestAppContext) {
 9162        init_test(cx);
 9163        let fs = FakeFs::new(cx.executor());
 9164
 9165        let project = Project::test(fs, [], cx).await;
 9166        let (workspace, cx) =
 9167            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9168
 9169        let panel = workspace.update_in(cx, |workspace, window, cx| {
 9170            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 9171            workspace.add_panel(panel.clone(), window, cx);
 9172
 9173            workspace
 9174                .right_dock()
 9175                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
 9176
 9177            panel
 9178        });
 9179
 9180        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9181        pane.update_in(cx, |pane, window, cx| {
 9182            let item = cx.new(TestItem::new);
 9183            pane.add_item(Box::new(item), true, true, None, window, cx);
 9184        });
 9185
 9186        // Transfer focus from center to panel
 9187        workspace.update_in(cx, |workspace, window, cx| {
 9188            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 9189        });
 9190
 9191        workspace.update_in(cx, |workspace, window, cx| {
 9192            assert!(workspace.right_dock().read(cx).is_open());
 9193            assert!(!panel.is_zoomed(window, cx));
 9194            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9195        });
 9196
 9197        // Transfer focus from panel to center
 9198        workspace.update_in(cx, |workspace, window, cx| {
 9199            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 9200        });
 9201
 9202        workspace.update_in(cx, |workspace, window, cx| {
 9203            assert!(workspace.right_dock().read(cx).is_open());
 9204            assert!(!panel.is_zoomed(window, cx));
 9205            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9206        });
 9207
 9208        // Close the dock
 9209        workspace.update_in(cx, |workspace, window, cx| {
 9210            workspace.toggle_dock(DockPosition::Right, window, cx);
 9211        });
 9212
 9213        workspace.update_in(cx, |workspace, window, cx| {
 9214            assert!(!workspace.right_dock().read(cx).is_open());
 9215            assert!(!panel.is_zoomed(window, cx));
 9216            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9217        });
 9218
 9219        // Open the dock
 9220        workspace.update_in(cx, |workspace, window, cx| {
 9221            workspace.toggle_dock(DockPosition::Right, window, cx);
 9222        });
 9223
 9224        workspace.update_in(cx, |workspace, window, cx| {
 9225            assert!(workspace.right_dock().read(cx).is_open());
 9226            assert!(!panel.is_zoomed(window, cx));
 9227            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9228        });
 9229
 9230        // Focus and zoom panel
 9231        panel.update_in(cx, |panel, window, cx| {
 9232            cx.focus_self(window);
 9233            panel.set_zoomed(true, window, cx)
 9234        });
 9235
 9236        workspace.update_in(cx, |workspace, window, cx| {
 9237            assert!(workspace.right_dock().read(cx).is_open());
 9238            assert!(panel.is_zoomed(window, cx));
 9239            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9240        });
 9241
 9242        // Transfer focus to the center closes the dock
 9243        workspace.update_in(cx, |workspace, window, cx| {
 9244            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 9245        });
 9246
 9247        workspace.update_in(cx, |workspace, window, cx| {
 9248            assert!(!workspace.right_dock().read(cx).is_open());
 9249            assert!(panel.is_zoomed(window, cx));
 9250            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9251        });
 9252
 9253        // Transferring focus back to the panel keeps it zoomed
 9254        workspace.update_in(cx, |workspace, window, cx| {
 9255            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 9256        });
 9257
 9258        workspace.update_in(cx, |workspace, window, cx| {
 9259            assert!(workspace.right_dock().read(cx).is_open());
 9260            assert!(panel.is_zoomed(window, cx));
 9261            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9262        });
 9263
 9264        // Close the dock while it is zoomed
 9265        workspace.update_in(cx, |workspace, window, cx| {
 9266            workspace.toggle_dock(DockPosition::Right, window, cx)
 9267        });
 9268
 9269        workspace.update_in(cx, |workspace, window, cx| {
 9270            assert!(!workspace.right_dock().read(cx).is_open());
 9271            assert!(panel.is_zoomed(window, cx));
 9272            assert!(workspace.zoomed.is_none());
 9273            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9274        });
 9275
 9276        // Opening the dock, when it's zoomed, retains focus
 9277        workspace.update_in(cx, |workspace, window, cx| {
 9278            workspace.toggle_dock(DockPosition::Right, window, cx)
 9279        });
 9280
 9281        workspace.update_in(cx, |workspace, window, cx| {
 9282            assert!(workspace.right_dock().read(cx).is_open());
 9283            assert!(panel.is_zoomed(window, cx));
 9284            assert!(workspace.zoomed.is_some());
 9285            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 9286        });
 9287
 9288        // Unzoom and close the panel, zoom the active pane.
 9289        panel.update_in(cx, |panel, window, cx| panel.set_zoomed(false, window, cx));
 9290        workspace.update_in(cx, |workspace, window, cx| {
 9291            workspace.toggle_dock(DockPosition::Right, window, cx)
 9292        });
 9293        pane.update_in(cx, |pane, window, cx| {
 9294            pane.toggle_zoom(&Default::default(), window, cx)
 9295        });
 9296
 9297        // Opening a dock unzooms the pane.
 9298        workspace.update_in(cx, |workspace, window, cx| {
 9299            workspace.toggle_dock(DockPosition::Right, window, cx)
 9300        });
 9301        workspace.update_in(cx, |workspace, window, cx| {
 9302            let pane = pane.read(cx);
 9303            assert!(!pane.is_zoomed());
 9304            assert!(!pane.focus_handle(cx).is_focused(window));
 9305            assert!(workspace.right_dock().read(cx).is_open());
 9306            assert!(workspace.zoomed.is_none());
 9307        });
 9308    }
 9309
 9310    #[gpui::test]
 9311    async fn test_toggle_all_docks(cx: &mut gpui::TestAppContext) {
 9312        init_test(cx);
 9313        let fs = FakeFs::new(cx.executor());
 9314
 9315        let project = Project::test(fs, [], cx).await;
 9316        let (workspace, cx) =
 9317            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9318        workspace.update_in(cx, |workspace, window, cx| {
 9319            // Open two docks
 9320            let left_dock = workspace.dock_at_position(DockPosition::Left);
 9321            let right_dock = workspace.dock_at_position(DockPosition::Right);
 9322
 9323            left_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
 9324            right_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
 9325
 9326            assert!(left_dock.read(cx).is_open());
 9327            assert!(right_dock.read(cx).is_open());
 9328        });
 9329
 9330        workspace.update_in(cx, |workspace, window, cx| {
 9331            // Toggle all docks - should close both
 9332            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
 9333
 9334            let left_dock = workspace.dock_at_position(DockPosition::Left);
 9335            let right_dock = workspace.dock_at_position(DockPosition::Right);
 9336            assert!(!left_dock.read(cx).is_open());
 9337            assert!(!right_dock.read(cx).is_open());
 9338        });
 9339
 9340        workspace.update_in(cx, |workspace, window, cx| {
 9341            // Toggle again - should reopen both
 9342            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
 9343
 9344            let left_dock = workspace.dock_at_position(DockPosition::Left);
 9345            let right_dock = workspace.dock_at_position(DockPosition::Right);
 9346            assert!(left_dock.read(cx).is_open());
 9347            assert!(right_dock.read(cx).is_open());
 9348        });
 9349    }
 9350
 9351    #[gpui::test]
 9352    async fn test_toggle_all_with_manual_close(cx: &mut gpui::TestAppContext) {
 9353        init_test(cx);
 9354        let fs = FakeFs::new(cx.executor());
 9355
 9356        let project = Project::test(fs, [], cx).await;
 9357        let (workspace, cx) =
 9358            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9359        workspace.update_in(cx, |workspace, window, cx| {
 9360            // Open two docks
 9361            let left_dock = workspace.dock_at_position(DockPosition::Left);
 9362            let right_dock = workspace.dock_at_position(DockPosition::Right);
 9363
 9364            left_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
 9365            right_dock.update(cx, |dock, cx| dock.set_open(true, window, cx));
 9366
 9367            assert!(left_dock.read(cx).is_open());
 9368            assert!(right_dock.read(cx).is_open());
 9369        });
 9370
 9371        workspace.update_in(cx, |workspace, window, cx| {
 9372            // Close them manually
 9373            workspace.toggle_dock(DockPosition::Left, window, cx);
 9374            workspace.toggle_dock(DockPosition::Right, window, cx);
 9375
 9376            let left_dock = workspace.dock_at_position(DockPosition::Left);
 9377            let right_dock = workspace.dock_at_position(DockPosition::Right);
 9378            assert!(!left_dock.read(cx).is_open());
 9379            assert!(!right_dock.read(cx).is_open());
 9380        });
 9381
 9382        workspace.update_in(cx, |workspace, window, cx| {
 9383            // Toggle all docks - only last closed (right dock) should reopen
 9384            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
 9385
 9386            let left_dock = workspace.dock_at_position(DockPosition::Left);
 9387            let right_dock = workspace.dock_at_position(DockPosition::Right);
 9388            assert!(!left_dock.read(cx).is_open());
 9389            assert!(right_dock.read(cx).is_open());
 9390        });
 9391    }
 9392
 9393    #[gpui::test]
 9394    async fn test_toggle_all_docks_after_dock_move(cx: &mut gpui::TestAppContext) {
 9395        init_test(cx);
 9396        let fs = FakeFs::new(cx.executor());
 9397        let project = Project::test(fs, [], cx).await;
 9398        let (workspace, cx) =
 9399            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9400
 9401        // Open two docks (left and right) with one panel each
 9402        let (left_panel, right_panel) = workspace.update_in(cx, |workspace, window, cx| {
 9403            let left_panel = cx.new(|cx| TestPanel::new(DockPosition::Left, cx));
 9404            workspace.add_panel(left_panel.clone(), window, cx);
 9405
 9406            let right_panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 9407            workspace.add_panel(right_panel.clone(), window, cx);
 9408
 9409            workspace.toggle_dock(DockPosition::Left, window, cx);
 9410            workspace.toggle_dock(DockPosition::Right, window, cx);
 9411
 9412            // Verify initial state
 9413            assert!(
 9414                workspace.left_dock().read(cx).is_open(),
 9415                "Left dock should be open"
 9416            );
 9417            assert_eq!(
 9418                workspace
 9419                    .left_dock()
 9420                    .read(cx)
 9421                    .visible_panel()
 9422                    .unwrap()
 9423                    .panel_id(),
 9424                left_panel.panel_id(),
 9425                "Left panel should be visible in left dock"
 9426            );
 9427            assert!(
 9428                workspace.right_dock().read(cx).is_open(),
 9429                "Right dock should be open"
 9430            );
 9431            assert_eq!(
 9432                workspace
 9433                    .right_dock()
 9434                    .read(cx)
 9435                    .visible_panel()
 9436                    .unwrap()
 9437                    .panel_id(),
 9438                right_panel.panel_id(),
 9439                "Right panel should be visible in right dock"
 9440            );
 9441            assert!(
 9442                !workspace.bottom_dock().read(cx).is_open(),
 9443                "Bottom dock should be closed"
 9444            );
 9445
 9446            (left_panel, right_panel)
 9447        });
 9448
 9449        // Focus the left panel and move it to the next position (bottom dock)
 9450        workspace.update_in(cx, |workspace, window, cx| {
 9451            workspace.toggle_panel_focus::<TestPanel>(window, cx); // Focus left panel
 9452            assert!(
 9453                left_panel.read(cx).focus_handle(cx).is_focused(window),
 9454                "Left panel should be focused"
 9455            );
 9456        });
 9457
 9458        cx.dispatch_action(MoveFocusedPanelToNextPosition);
 9459
 9460        // Verify the left panel has moved to the bottom dock, and the bottom dock is now open
 9461        workspace.update(cx, |workspace, cx| {
 9462            assert!(
 9463                !workspace.left_dock().read(cx).is_open(),
 9464                "Left dock should be closed"
 9465            );
 9466            assert!(
 9467                workspace.bottom_dock().read(cx).is_open(),
 9468                "Bottom dock should now be open"
 9469            );
 9470            assert_eq!(
 9471                left_panel.read(cx).position,
 9472                DockPosition::Bottom,
 9473                "Left panel should now be in the bottom dock"
 9474            );
 9475            assert_eq!(
 9476                workspace
 9477                    .bottom_dock()
 9478                    .read(cx)
 9479                    .visible_panel()
 9480                    .unwrap()
 9481                    .panel_id(),
 9482                left_panel.panel_id(),
 9483                "Left panel should be the visible panel in the bottom dock"
 9484            );
 9485        });
 9486
 9487        // Toggle all docks off
 9488        workspace.update_in(cx, |workspace, window, cx| {
 9489            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
 9490            assert!(
 9491                !workspace.left_dock().read(cx).is_open(),
 9492                "Left dock should be closed"
 9493            );
 9494            assert!(
 9495                !workspace.right_dock().read(cx).is_open(),
 9496                "Right dock should be closed"
 9497            );
 9498            assert!(
 9499                !workspace.bottom_dock().read(cx).is_open(),
 9500                "Bottom dock should be closed"
 9501            );
 9502        });
 9503
 9504        // Toggle all docks back on and verify positions are restored
 9505        workspace.update_in(cx, |workspace, window, cx| {
 9506            workspace.toggle_all_docks(&ToggleAllDocks, window, cx);
 9507            assert!(
 9508                !workspace.left_dock().read(cx).is_open(),
 9509                "Left dock should remain closed"
 9510            );
 9511            assert!(
 9512                workspace.right_dock().read(cx).is_open(),
 9513                "Right dock should remain open"
 9514            );
 9515            assert!(
 9516                workspace.bottom_dock().read(cx).is_open(),
 9517                "Bottom dock should remain open"
 9518            );
 9519            assert_eq!(
 9520                left_panel.read(cx).position,
 9521                DockPosition::Bottom,
 9522                "Left panel should remain in the bottom dock"
 9523            );
 9524            assert_eq!(
 9525                right_panel.read(cx).position,
 9526                DockPosition::Right,
 9527                "Right panel should remain in the right dock"
 9528            );
 9529            assert_eq!(
 9530                workspace
 9531                    .bottom_dock()
 9532                    .read(cx)
 9533                    .visible_panel()
 9534                    .unwrap()
 9535                    .panel_id(),
 9536                left_panel.panel_id(),
 9537                "Left panel should be the visible panel in the right dock"
 9538            );
 9539        });
 9540    }
 9541
 9542    #[gpui::test]
 9543    async fn test_join_pane_into_next(cx: &mut gpui::TestAppContext) {
 9544        init_test(cx);
 9545
 9546        let fs = FakeFs::new(cx.executor());
 9547
 9548        let project = Project::test(fs, None, cx).await;
 9549        let (workspace, cx) =
 9550            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9551
 9552        // Let's arrange the panes like this:
 9553        //
 9554        // +-----------------------+
 9555        // |         top           |
 9556        // +------+--------+-------+
 9557        // | left | center | right |
 9558        // +------+--------+-------+
 9559        // |        bottom         |
 9560        // +-----------------------+
 9561
 9562        let top_item = cx.new(|cx| {
 9563            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "top.txt", cx)])
 9564        });
 9565        let bottom_item = cx.new(|cx| {
 9566            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "bottom.txt", cx)])
 9567        });
 9568        let left_item = cx.new(|cx| {
 9569            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "left.txt", cx)])
 9570        });
 9571        let right_item = cx.new(|cx| {
 9572            TestItem::new(cx).with_project_items(&[TestProjectItem::new(4, "right.txt", cx)])
 9573        });
 9574        let center_item = cx.new(|cx| {
 9575            TestItem::new(cx).with_project_items(&[TestProjectItem::new(5, "center.txt", cx)])
 9576        });
 9577
 9578        let top_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9579            let top_pane_id = workspace.active_pane().entity_id();
 9580            workspace.add_item_to_active_pane(Box::new(top_item.clone()), None, false, window, cx);
 9581            workspace.split_pane(
 9582                workspace.active_pane().clone(),
 9583                SplitDirection::Down,
 9584                window,
 9585                cx,
 9586            );
 9587            top_pane_id
 9588        });
 9589        let bottom_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9590            let bottom_pane_id = workspace.active_pane().entity_id();
 9591            workspace.add_item_to_active_pane(
 9592                Box::new(bottom_item.clone()),
 9593                None,
 9594                false,
 9595                window,
 9596                cx,
 9597            );
 9598            workspace.split_pane(
 9599                workspace.active_pane().clone(),
 9600                SplitDirection::Up,
 9601                window,
 9602                cx,
 9603            );
 9604            bottom_pane_id
 9605        });
 9606        let left_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9607            let left_pane_id = workspace.active_pane().entity_id();
 9608            workspace.add_item_to_active_pane(Box::new(left_item.clone()), None, false, window, cx);
 9609            workspace.split_pane(
 9610                workspace.active_pane().clone(),
 9611                SplitDirection::Right,
 9612                window,
 9613                cx,
 9614            );
 9615            left_pane_id
 9616        });
 9617        let right_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9618            let right_pane_id = workspace.active_pane().entity_id();
 9619            workspace.add_item_to_active_pane(
 9620                Box::new(right_item.clone()),
 9621                None,
 9622                false,
 9623                window,
 9624                cx,
 9625            );
 9626            workspace.split_pane(
 9627                workspace.active_pane().clone(),
 9628                SplitDirection::Left,
 9629                window,
 9630                cx,
 9631            );
 9632            right_pane_id
 9633        });
 9634        let center_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9635            let center_pane_id = workspace.active_pane().entity_id();
 9636            workspace.add_item_to_active_pane(
 9637                Box::new(center_item.clone()),
 9638                None,
 9639                false,
 9640                window,
 9641                cx,
 9642            );
 9643            center_pane_id
 9644        });
 9645        cx.executor().run_until_parked();
 9646
 9647        workspace.update_in(cx, |workspace, window, cx| {
 9648            assert_eq!(center_pane_id, workspace.active_pane().entity_id());
 9649
 9650            // Join into next from center pane into right
 9651            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9652        });
 9653
 9654        workspace.update_in(cx, |workspace, window, cx| {
 9655            let active_pane = workspace.active_pane();
 9656            assert_eq!(right_pane_id, active_pane.entity_id());
 9657            assert_eq!(2, active_pane.read(cx).items_len());
 9658            let item_ids_in_pane =
 9659                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9660            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9661            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9662
 9663            // Join into next from right pane into bottom
 9664            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9665        });
 9666
 9667        workspace.update_in(cx, |workspace, window, cx| {
 9668            let active_pane = workspace.active_pane();
 9669            assert_eq!(bottom_pane_id, active_pane.entity_id());
 9670            assert_eq!(3, active_pane.read(cx).items_len());
 9671            let item_ids_in_pane =
 9672                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9673            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9674            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9675            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9676
 9677            // Join into next from bottom pane into left
 9678            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9679        });
 9680
 9681        workspace.update_in(cx, |workspace, window, cx| {
 9682            let active_pane = workspace.active_pane();
 9683            assert_eq!(left_pane_id, active_pane.entity_id());
 9684            assert_eq!(4, active_pane.read(cx).items_len());
 9685            let item_ids_in_pane =
 9686                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9687            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9688            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9689            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9690            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9691
 9692            // Join into next from left pane into top
 9693            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9694        });
 9695
 9696        workspace.update_in(cx, |workspace, window, cx| {
 9697            let active_pane = workspace.active_pane();
 9698            assert_eq!(top_pane_id, active_pane.entity_id());
 9699            assert_eq!(5, active_pane.read(cx).items_len());
 9700            let item_ids_in_pane =
 9701                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9702            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9703            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9704            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9705            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9706            assert!(item_ids_in_pane.contains(&top_item.item_id()));
 9707
 9708            // Single pane left: no-op
 9709            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx)
 9710        });
 9711
 9712        workspace.update(cx, |workspace, _cx| {
 9713            let active_pane = workspace.active_pane();
 9714            assert_eq!(top_pane_id, active_pane.entity_id());
 9715        });
 9716    }
 9717
 9718    fn add_an_item_to_active_pane(
 9719        cx: &mut VisualTestContext,
 9720        workspace: &Entity<Workspace>,
 9721        item_id: u64,
 9722    ) -> Entity<TestItem> {
 9723        let item = cx.new(|cx| {
 9724            TestItem::new(cx).with_project_items(&[TestProjectItem::new(
 9725                item_id,
 9726                "item{item_id}.txt",
 9727                cx,
 9728            )])
 9729        });
 9730        workspace.update_in(cx, |workspace, window, cx| {
 9731            workspace.add_item_to_active_pane(Box::new(item.clone()), None, false, window, cx);
 9732        });
 9733        item
 9734    }
 9735
 9736    fn split_pane(cx: &mut VisualTestContext, workspace: &Entity<Workspace>) -> Entity<Pane> {
 9737        workspace.update_in(cx, |workspace, window, cx| {
 9738            workspace.split_pane(
 9739                workspace.active_pane().clone(),
 9740                SplitDirection::Right,
 9741                window,
 9742                cx,
 9743            )
 9744        })
 9745    }
 9746
 9747    #[gpui::test]
 9748    async fn test_join_all_panes(cx: &mut gpui::TestAppContext) {
 9749        init_test(cx);
 9750        let fs = FakeFs::new(cx.executor());
 9751        let project = Project::test(fs, None, cx).await;
 9752        let (workspace, cx) =
 9753            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9754
 9755        add_an_item_to_active_pane(cx, &workspace, 1);
 9756        split_pane(cx, &workspace);
 9757        add_an_item_to_active_pane(cx, &workspace, 2);
 9758        split_pane(cx, &workspace); // empty pane
 9759        split_pane(cx, &workspace);
 9760        let last_item = add_an_item_to_active_pane(cx, &workspace, 3);
 9761
 9762        cx.executor().run_until_parked();
 9763
 9764        workspace.update(cx, |workspace, cx| {
 9765            let num_panes = workspace.panes().len();
 9766            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9767            let active_item = workspace
 9768                .active_pane()
 9769                .read(cx)
 9770                .active_item()
 9771                .expect("item is in focus");
 9772
 9773            assert_eq!(num_panes, 4);
 9774            assert_eq!(num_items_in_current_pane, 1);
 9775            assert_eq!(active_item.item_id(), last_item.item_id());
 9776        });
 9777
 9778        workspace.update_in(cx, |workspace, window, cx| {
 9779            workspace.join_all_panes(window, cx);
 9780        });
 9781
 9782        workspace.update(cx, |workspace, cx| {
 9783            let num_panes = workspace.panes().len();
 9784            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9785            let active_item = workspace
 9786                .active_pane()
 9787                .read(cx)
 9788                .active_item()
 9789                .expect("item is in focus");
 9790
 9791            assert_eq!(num_panes, 1);
 9792            assert_eq!(num_items_in_current_pane, 3);
 9793            assert_eq!(active_item.item_id(), last_item.item_id());
 9794        });
 9795    }
 9796    struct TestModal(FocusHandle);
 9797
 9798    impl TestModal {
 9799        fn new(_: &mut Window, cx: &mut Context<Self>) -> Self {
 9800            Self(cx.focus_handle())
 9801        }
 9802    }
 9803
 9804    impl EventEmitter<DismissEvent> for TestModal {}
 9805
 9806    impl Focusable for TestModal {
 9807        fn focus_handle(&self, _cx: &App) -> FocusHandle {
 9808            self.0.clone()
 9809        }
 9810    }
 9811
 9812    impl ModalView for TestModal {}
 9813
 9814    impl Render for TestModal {
 9815        fn render(
 9816            &mut self,
 9817            _window: &mut Window,
 9818            _cx: &mut Context<TestModal>,
 9819        ) -> impl IntoElement {
 9820            div().track_focus(&self.0)
 9821        }
 9822    }
 9823
 9824    #[gpui::test]
 9825    async fn test_panels(cx: &mut gpui::TestAppContext) {
 9826        init_test(cx);
 9827        let fs = FakeFs::new(cx.executor());
 9828
 9829        let project = Project::test(fs, [], cx).await;
 9830        let (workspace, cx) =
 9831            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9832
 9833        let (panel_1, panel_2) = workspace.update_in(cx, |workspace, window, cx| {
 9834            let panel_1 = cx.new(|cx| TestPanel::new(DockPosition::Left, cx));
 9835            workspace.add_panel(panel_1.clone(), window, cx);
 9836            workspace.toggle_dock(DockPosition::Left, window, cx);
 9837            let panel_2 = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 9838            workspace.add_panel(panel_2.clone(), window, cx);
 9839            workspace.toggle_dock(DockPosition::Right, window, cx);
 9840
 9841            let left_dock = workspace.left_dock();
 9842            assert_eq!(
 9843                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9844                panel_1.panel_id()
 9845            );
 9846            assert_eq!(
 9847                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9848                panel_1.size(window, cx)
 9849            );
 9850
 9851            left_dock.update(cx, |left_dock, cx| {
 9852                left_dock.resize_active_panel(Some(px(1337.)), window, cx)
 9853            });
 9854            assert_eq!(
 9855                workspace
 9856                    .right_dock()
 9857                    .read(cx)
 9858                    .visible_panel()
 9859                    .unwrap()
 9860                    .panel_id(),
 9861                panel_2.panel_id(),
 9862            );
 9863
 9864            (panel_1, panel_2)
 9865        });
 9866
 9867        // Move panel_1 to the right
 9868        panel_1.update_in(cx, |panel_1, window, cx| {
 9869            panel_1.set_position(DockPosition::Right, window, cx)
 9870        });
 9871
 9872        workspace.update_in(cx, |workspace, window, cx| {
 9873            // Since panel_1 was visible on the left, it should now be visible now that it's been moved to the right.
 9874            // Since it was the only panel on the left, the left dock should now be closed.
 9875            assert!(!workspace.left_dock().read(cx).is_open());
 9876            assert!(workspace.left_dock().read(cx).visible_panel().is_none());
 9877            let right_dock = workspace.right_dock();
 9878            assert_eq!(
 9879                right_dock.read(cx).visible_panel().unwrap().panel_id(),
 9880                panel_1.panel_id()
 9881            );
 9882            assert_eq!(
 9883                right_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9884                px(1337.)
 9885            );
 9886
 9887            // Now we move panel_2 to the left
 9888            panel_2.set_position(DockPosition::Left, window, cx);
 9889        });
 9890
 9891        workspace.update(cx, |workspace, cx| {
 9892            // Since panel_2 was not visible on the right, we don't open the left dock.
 9893            assert!(!workspace.left_dock().read(cx).is_open());
 9894            // And the right dock is unaffected in its displaying of panel_1
 9895            assert!(workspace.right_dock().read(cx).is_open());
 9896            assert_eq!(
 9897                workspace
 9898                    .right_dock()
 9899                    .read(cx)
 9900                    .visible_panel()
 9901                    .unwrap()
 9902                    .panel_id(),
 9903                panel_1.panel_id(),
 9904            );
 9905        });
 9906
 9907        // Move panel_1 back to the left
 9908        panel_1.update_in(cx, |panel_1, window, cx| {
 9909            panel_1.set_position(DockPosition::Left, window, cx)
 9910        });
 9911
 9912        workspace.update_in(cx, |workspace, window, cx| {
 9913            // Since panel_1 was visible on the right, we open the left dock and make panel_1 active.
 9914            let left_dock = workspace.left_dock();
 9915            assert!(left_dock.read(cx).is_open());
 9916            assert_eq!(
 9917                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9918                panel_1.panel_id()
 9919            );
 9920            assert_eq!(
 9921                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9922                px(1337.)
 9923            );
 9924            // And the right dock should be closed as it no longer has any panels.
 9925            assert!(!workspace.right_dock().read(cx).is_open());
 9926
 9927            // Now we move panel_1 to the bottom
 9928            panel_1.set_position(DockPosition::Bottom, window, cx);
 9929        });
 9930
 9931        workspace.update_in(cx, |workspace, window, cx| {
 9932            // Since panel_1 was visible on the left, we close the left dock.
 9933            assert!(!workspace.left_dock().read(cx).is_open());
 9934            // The bottom dock is sized based on the panel's default size,
 9935            // since the panel orientation changed from vertical to horizontal.
 9936            let bottom_dock = workspace.bottom_dock();
 9937            assert_eq!(
 9938                bottom_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9939                panel_1.size(window, cx),
 9940            );
 9941            // Close bottom dock and move panel_1 back to the left.
 9942            bottom_dock.update(cx, |bottom_dock, cx| {
 9943                bottom_dock.set_open(false, window, cx)
 9944            });
 9945            panel_1.set_position(DockPosition::Left, window, cx);
 9946        });
 9947
 9948        // Emit activated event on panel 1
 9949        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Activate));
 9950
 9951        // Now the left dock is open and panel_1 is active and focused.
 9952        workspace.update_in(cx, |workspace, window, cx| {
 9953            let left_dock = workspace.left_dock();
 9954            assert!(left_dock.read(cx).is_open());
 9955            assert_eq!(
 9956                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9957                panel_1.panel_id(),
 9958            );
 9959            assert!(panel_1.focus_handle(cx).is_focused(window));
 9960        });
 9961
 9962        // Emit closed event on panel 2, which is not active
 9963        panel_2.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9964
 9965        // Wo don't close the left dock, because panel_2 wasn't the active panel
 9966        workspace.update(cx, |workspace, cx| {
 9967            let left_dock = workspace.left_dock();
 9968            assert!(left_dock.read(cx).is_open());
 9969            assert_eq!(
 9970                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9971                panel_1.panel_id(),
 9972            );
 9973        });
 9974
 9975        // Emitting a ZoomIn event shows the panel as zoomed.
 9976        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomIn));
 9977        workspace.read_with(cx, |workspace, _| {
 9978            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9979            assert_eq!(workspace.zoomed_position, Some(DockPosition::Left));
 9980        });
 9981
 9982        // Move panel to another dock while it is zoomed
 9983        panel_1.update_in(cx, |panel, window, cx| {
 9984            panel.set_position(DockPosition::Right, window, cx)
 9985        });
 9986        workspace.read_with(cx, |workspace, _| {
 9987            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9988
 9989            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9990        });
 9991
 9992        // This is a helper for getting a:
 9993        // - valid focus on an element,
 9994        // - that isn't a part of the panes and panels system of the Workspace,
 9995        // - and doesn't trigger the 'on_focus_lost' API.
 9996        let focus_other_view = {
 9997            let workspace = workspace.clone();
 9998            move |cx: &mut VisualTestContext| {
 9999                workspace.update_in(cx, |workspace, window, cx| {
10000                    if workspace.active_modal::<TestModal>(cx).is_some() {
10001                        workspace.toggle_modal(window, cx, TestModal::new);
10002                        workspace.toggle_modal(window, cx, TestModal::new);
10003                    } else {
10004                        workspace.toggle_modal(window, cx, TestModal::new);
10005                    }
10006                })
10007            }
10008        };
10009
10010        // If focus is transferred to another view that's not a panel or another pane, we still show
10011        // the panel as zoomed.
10012        focus_other_view(cx);
10013        workspace.read_with(cx, |workspace, _| {
10014            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
10015            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
10016        });
10017
10018        // If focus is transferred elsewhere in the workspace, the panel is no longer zoomed.
10019        workspace.update_in(cx, |_workspace, window, cx| {
10020            cx.focus_self(window);
10021        });
10022        workspace.read_with(cx, |workspace, _| {
10023            assert_eq!(workspace.zoomed, None);
10024            assert_eq!(workspace.zoomed_position, None);
10025        });
10026
10027        // If focus is transferred again to another view that's not a panel or a pane, we won't
10028        // show the panel as zoomed because it wasn't zoomed before.
10029        focus_other_view(cx);
10030        workspace.read_with(cx, |workspace, _| {
10031            assert_eq!(workspace.zoomed, None);
10032            assert_eq!(workspace.zoomed_position, None);
10033        });
10034
10035        // When the panel is activated, it is zoomed again.
10036        cx.dispatch_action(ToggleRightDock);
10037        workspace.read_with(cx, |workspace, _| {
10038            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
10039            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
10040        });
10041
10042        // Emitting a ZoomOut event unzooms the panel.
10043        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomOut));
10044        workspace.read_with(cx, |workspace, _| {
10045            assert_eq!(workspace.zoomed, None);
10046            assert_eq!(workspace.zoomed_position, None);
10047        });
10048
10049        // Emit closed event on panel 1, which is active
10050        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Close));
10051
10052        // Now the left dock is closed, because panel_1 was the active panel
10053        workspace.update(cx, |workspace, cx| {
10054            let right_dock = workspace.right_dock();
10055            assert!(!right_dock.read(cx).is_open());
10056        });
10057    }
10058
10059    #[gpui::test]
10060    async fn test_no_save_prompt_when_multi_buffer_dirty_items_closed(cx: &mut TestAppContext) {
10061        init_test(cx);
10062
10063        let fs = FakeFs::new(cx.background_executor.clone());
10064        let project = Project::test(fs, [], cx).await;
10065        let (workspace, cx) =
10066            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10067        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10068
10069        let dirty_regular_buffer = cx.new(|cx| {
10070            TestItem::new(cx)
10071                .with_dirty(true)
10072                .with_label("1.txt")
10073                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10074        });
10075        let dirty_regular_buffer_2 = cx.new(|cx| {
10076            TestItem::new(cx)
10077                .with_dirty(true)
10078                .with_label("2.txt")
10079                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10080        });
10081        let dirty_multi_buffer_with_both = cx.new(|cx| {
10082            TestItem::new(cx)
10083                .with_dirty(true)
10084                .with_buffer_kind(ItemBufferKind::Multibuffer)
10085                .with_label("Fake Project Search")
10086                .with_project_items(&[
10087                    dirty_regular_buffer.read(cx).project_items[0].clone(),
10088                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
10089                ])
10090        });
10091        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
10092        workspace.update_in(cx, |workspace, window, cx| {
10093            workspace.add_item(
10094                pane.clone(),
10095                Box::new(dirty_regular_buffer.clone()),
10096                None,
10097                false,
10098                false,
10099                window,
10100                cx,
10101            );
10102            workspace.add_item(
10103                pane.clone(),
10104                Box::new(dirty_regular_buffer_2.clone()),
10105                None,
10106                false,
10107                false,
10108                window,
10109                cx,
10110            );
10111            workspace.add_item(
10112                pane.clone(),
10113                Box::new(dirty_multi_buffer_with_both.clone()),
10114                None,
10115                false,
10116                false,
10117                window,
10118                cx,
10119            );
10120        });
10121
10122        pane.update_in(cx, |pane, window, cx| {
10123            pane.activate_item(2, true, true, window, cx);
10124            assert_eq!(
10125                pane.active_item().unwrap().item_id(),
10126                multi_buffer_with_both_files_id,
10127                "Should select the multi buffer in the pane"
10128            );
10129        });
10130        let close_all_but_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
10131            pane.close_other_items(
10132                &CloseOtherItems {
10133                    save_intent: Some(SaveIntent::Save),
10134                    close_pinned: true,
10135                },
10136                None,
10137                window,
10138                cx,
10139            )
10140        });
10141        cx.background_executor.run_until_parked();
10142        assert!(!cx.has_pending_prompt());
10143        close_all_but_multi_buffer_task
10144            .await
10145            .expect("Closing all buffers but the multi buffer failed");
10146        pane.update(cx, |pane, cx| {
10147            assert_eq!(dirty_regular_buffer.read(cx).save_count, 1);
10148            assert_eq!(dirty_multi_buffer_with_both.read(cx).save_count, 0);
10149            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 1);
10150            assert_eq!(pane.items_len(), 1);
10151            assert_eq!(
10152                pane.active_item().unwrap().item_id(),
10153                multi_buffer_with_both_files_id,
10154                "Should have only the multi buffer left in the pane"
10155            );
10156            assert!(
10157                dirty_multi_buffer_with_both.read(cx).is_dirty,
10158                "The multi buffer containing the unsaved buffer should still be dirty"
10159            );
10160        });
10161
10162        dirty_regular_buffer.update(cx, |buffer, cx| {
10163            buffer.project_items[0].update(cx, |pi, _| pi.is_dirty = true)
10164        });
10165
10166        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
10167            pane.close_active_item(
10168                &CloseActiveItem {
10169                    save_intent: Some(SaveIntent::Close),
10170                    close_pinned: false,
10171                },
10172                window,
10173                cx,
10174            )
10175        });
10176        cx.background_executor.run_until_parked();
10177        assert!(
10178            cx.has_pending_prompt(),
10179            "Dirty multi buffer should prompt a save dialog"
10180        );
10181        cx.simulate_prompt_answer("Save");
10182        cx.background_executor.run_until_parked();
10183        close_multi_buffer_task
10184            .await
10185            .expect("Closing the multi buffer failed");
10186        pane.update(cx, |pane, cx| {
10187            assert_eq!(
10188                dirty_multi_buffer_with_both.read(cx).save_count,
10189                1,
10190                "Multi buffer item should get be saved"
10191            );
10192            // Test impl does not save inner items, so we do not assert them
10193            assert_eq!(
10194                pane.items_len(),
10195                0,
10196                "No more items should be left in the pane"
10197            );
10198            assert!(pane.active_item().is_none());
10199        });
10200    }
10201
10202    #[gpui::test]
10203    async fn test_save_prompt_when_dirty_multi_buffer_closed_with_some_of_its_dirty_items_not_present_in_the_pane(
10204        cx: &mut TestAppContext,
10205    ) {
10206        init_test(cx);
10207
10208        let fs = FakeFs::new(cx.background_executor.clone());
10209        let project = Project::test(fs, [], cx).await;
10210        let (workspace, cx) =
10211            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10212        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10213
10214        let dirty_regular_buffer = cx.new(|cx| {
10215            TestItem::new(cx)
10216                .with_dirty(true)
10217                .with_label("1.txt")
10218                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10219        });
10220        let dirty_regular_buffer_2 = cx.new(|cx| {
10221            TestItem::new(cx)
10222                .with_dirty(true)
10223                .with_label("2.txt")
10224                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10225        });
10226        let clear_regular_buffer = cx.new(|cx| {
10227            TestItem::new(cx)
10228                .with_label("3.txt")
10229                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
10230        });
10231
10232        let dirty_multi_buffer_with_both = cx.new(|cx| {
10233            TestItem::new(cx)
10234                .with_dirty(true)
10235                .with_buffer_kind(ItemBufferKind::Multibuffer)
10236                .with_label("Fake Project Search")
10237                .with_project_items(&[
10238                    dirty_regular_buffer.read(cx).project_items[0].clone(),
10239                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
10240                    clear_regular_buffer.read(cx).project_items[0].clone(),
10241                ])
10242        });
10243        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
10244        workspace.update_in(cx, |workspace, window, cx| {
10245            workspace.add_item(
10246                pane.clone(),
10247                Box::new(dirty_regular_buffer.clone()),
10248                None,
10249                false,
10250                false,
10251                window,
10252                cx,
10253            );
10254            workspace.add_item(
10255                pane.clone(),
10256                Box::new(dirty_multi_buffer_with_both.clone()),
10257                None,
10258                false,
10259                false,
10260                window,
10261                cx,
10262            );
10263        });
10264
10265        pane.update_in(cx, |pane, window, cx| {
10266            pane.activate_item(1, true, true, window, cx);
10267            assert_eq!(
10268                pane.active_item().unwrap().item_id(),
10269                multi_buffer_with_both_files_id,
10270                "Should select the multi buffer in the pane"
10271            );
10272        });
10273        let _close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
10274            pane.close_active_item(
10275                &CloseActiveItem {
10276                    save_intent: None,
10277                    close_pinned: false,
10278                },
10279                window,
10280                cx,
10281            )
10282        });
10283        cx.background_executor.run_until_parked();
10284        assert!(
10285            cx.has_pending_prompt(),
10286            "With one dirty item from the multi buffer not being in the pane, a save prompt should be shown"
10287        );
10288    }
10289
10290    /// Tests that when `close_on_file_delete` is enabled, files are automatically
10291    /// closed when they are deleted from disk.
10292    #[gpui::test]
10293    async fn test_close_on_disk_deletion_enabled(cx: &mut TestAppContext) {
10294        init_test(cx);
10295
10296        // Enable the close_on_disk_deletion setting
10297        cx.update_global(|store: &mut SettingsStore, cx| {
10298            store.update_user_settings(cx, |settings| {
10299                settings.workspace.close_on_file_delete = Some(true);
10300            });
10301        });
10302
10303        let fs = FakeFs::new(cx.background_executor.clone());
10304        let project = Project::test(fs, [], cx).await;
10305        let (workspace, cx) =
10306            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10307        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10308
10309        // Create a test item that simulates a file
10310        let item = cx.new(|cx| {
10311            TestItem::new(cx)
10312                .with_label("test.txt")
10313                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
10314        });
10315
10316        // Add item to workspace
10317        workspace.update_in(cx, |workspace, window, cx| {
10318            workspace.add_item(
10319                pane.clone(),
10320                Box::new(item.clone()),
10321                None,
10322                false,
10323                false,
10324                window,
10325                cx,
10326            );
10327        });
10328
10329        // Verify the item is in the pane
10330        pane.read_with(cx, |pane, _| {
10331            assert_eq!(pane.items().count(), 1);
10332        });
10333
10334        // Simulate file deletion by setting the item's deleted state
10335        item.update(cx, |item, _| {
10336            item.set_has_deleted_file(true);
10337        });
10338
10339        // Emit UpdateTab event to trigger the close behavior
10340        cx.run_until_parked();
10341        item.update(cx, |_, cx| {
10342            cx.emit(ItemEvent::UpdateTab);
10343        });
10344
10345        // Allow the close operation to complete
10346        cx.run_until_parked();
10347
10348        // Verify the item was automatically closed
10349        pane.read_with(cx, |pane, _| {
10350            assert_eq!(
10351                pane.items().count(),
10352                0,
10353                "Item should be automatically closed when file is deleted"
10354            );
10355        });
10356    }
10357
10358    /// Tests that when `close_on_file_delete` is disabled (default), files remain
10359    /// open with a strikethrough when they are deleted from disk.
10360    #[gpui::test]
10361    async fn test_close_on_disk_deletion_disabled(cx: &mut TestAppContext) {
10362        init_test(cx);
10363
10364        // Ensure close_on_disk_deletion is disabled (default)
10365        cx.update_global(|store: &mut SettingsStore, cx| {
10366            store.update_user_settings(cx, |settings| {
10367                settings.workspace.close_on_file_delete = Some(false);
10368            });
10369        });
10370
10371        let fs = FakeFs::new(cx.background_executor.clone());
10372        let project = Project::test(fs, [], cx).await;
10373        let (workspace, cx) =
10374            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10375        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10376
10377        // Create a test item that simulates a file
10378        let item = cx.new(|cx| {
10379            TestItem::new(cx)
10380                .with_label("test.txt")
10381                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
10382        });
10383
10384        // Add item to workspace
10385        workspace.update_in(cx, |workspace, window, cx| {
10386            workspace.add_item(
10387                pane.clone(),
10388                Box::new(item.clone()),
10389                None,
10390                false,
10391                false,
10392                window,
10393                cx,
10394            );
10395        });
10396
10397        // Verify the item is in the pane
10398        pane.read_with(cx, |pane, _| {
10399            assert_eq!(pane.items().count(), 1);
10400        });
10401
10402        // Simulate file deletion
10403        item.update(cx, |item, _| {
10404            item.set_has_deleted_file(true);
10405        });
10406
10407        // Emit UpdateTab event
10408        cx.run_until_parked();
10409        item.update(cx, |_, cx| {
10410            cx.emit(ItemEvent::UpdateTab);
10411        });
10412
10413        // Allow any potential close operation to complete
10414        cx.run_until_parked();
10415
10416        // Verify the item remains open (with strikethrough)
10417        pane.read_with(cx, |pane, _| {
10418            assert_eq!(
10419                pane.items().count(),
10420                1,
10421                "Item should remain open when close_on_disk_deletion is disabled"
10422            );
10423        });
10424
10425        // Verify the item shows as deleted
10426        item.read_with(cx, |item, _| {
10427            assert!(
10428                item.has_deleted_file,
10429                "Item should be marked as having deleted file"
10430            );
10431        });
10432    }
10433
10434    /// Tests that dirty files are not automatically closed when deleted from disk,
10435    /// even when `close_on_file_delete` is enabled. This ensures users don't lose
10436    /// unsaved changes without being prompted.
10437    #[gpui::test]
10438    async fn test_close_on_disk_deletion_with_dirty_file(cx: &mut TestAppContext) {
10439        init_test(cx);
10440
10441        // Enable the close_on_file_delete setting
10442        cx.update_global(|store: &mut SettingsStore, cx| {
10443            store.update_user_settings(cx, |settings| {
10444                settings.workspace.close_on_file_delete = Some(true);
10445            });
10446        });
10447
10448        let fs = FakeFs::new(cx.background_executor.clone());
10449        let project = Project::test(fs, [], cx).await;
10450        let (workspace, cx) =
10451            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10452        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10453
10454        // Create a dirty test item
10455        let item = cx.new(|cx| {
10456            TestItem::new(cx)
10457                .with_dirty(true)
10458                .with_label("test.txt")
10459                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
10460        });
10461
10462        // Add item to workspace
10463        workspace.update_in(cx, |workspace, window, cx| {
10464            workspace.add_item(
10465                pane.clone(),
10466                Box::new(item.clone()),
10467                None,
10468                false,
10469                false,
10470                window,
10471                cx,
10472            );
10473        });
10474
10475        // Simulate file deletion
10476        item.update(cx, |item, _| {
10477            item.set_has_deleted_file(true);
10478        });
10479
10480        // Emit UpdateTab event to trigger the close behavior
10481        cx.run_until_parked();
10482        item.update(cx, |_, cx| {
10483            cx.emit(ItemEvent::UpdateTab);
10484        });
10485
10486        // Allow any potential close operation to complete
10487        cx.run_until_parked();
10488
10489        // Verify the item remains open (dirty files are not auto-closed)
10490        pane.read_with(cx, |pane, _| {
10491            assert_eq!(
10492                pane.items().count(),
10493                1,
10494                "Dirty items should not be automatically closed even when file is deleted"
10495            );
10496        });
10497
10498        // Verify the item is marked as deleted and still dirty
10499        item.read_with(cx, |item, _| {
10500            assert!(
10501                item.has_deleted_file,
10502                "Item should be marked as having deleted file"
10503            );
10504            assert!(item.is_dirty, "Item should still be dirty");
10505        });
10506    }
10507
10508    /// Tests that navigation history is cleaned up when files are auto-closed
10509    /// due to deletion from disk.
10510    #[gpui::test]
10511    async fn test_close_on_disk_deletion_cleans_navigation_history(cx: &mut TestAppContext) {
10512        init_test(cx);
10513
10514        // Enable the close_on_file_delete setting
10515        cx.update_global(|store: &mut SettingsStore, cx| {
10516            store.update_user_settings(cx, |settings| {
10517                settings.workspace.close_on_file_delete = Some(true);
10518            });
10519        });
10520
10521        let fs = FakeFs::new(cx.background_executor.clone());
10522        let project = Project::test(fs, [], cx).await;
10523        let (workspace, cx) =
10524            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10525        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10526
10527        // Create test items
10528        let item1 = cx.new(|cx| {
10529            TestItem::new(cx)
10530                .with_label("test1.txt")
10531                .with_project_items(&[TestProjectItem::new(1, "test1.txt", cx)])
10532        });
10533        let item1_id = item1.item_id();
10534
10535        let item2 = cx.new(|cx| {
10536            TestItem::new(cx)
10537                .with_label("test2.txt")
10538                .with_project_items(&[TestProjectItem::new(2, "test2.txt", cx)])
10539        });
10540
10541        // Add items to workspace
10542        workspace.update_in(cx, |workspace, window, cx| {
10543            workspace.add_item(
10544                pane.clone(),
10545                Box::new(item1.clone()),
10546                None,
10547                false,
10548                false,
10549                window,
10550                cx,
10551            );
10552            workspace.add_item(
10553                pane.clone(),
10554                Box::new(item2.clone()),
10555                None,
10556                false,
10557                false,
10558                window,
10559                cx,
10560            );
10561        });
10562
10563        // Activate item1 to ensure it gets navigation entries
10564        pane.update_in(cx, |pane, window, cx| {
10565            pane.activate_item(0, true, true, window, cx);
10566        });
10567
10568        // Switch to item2 and back to create navigation history
10569        pane.update_in(cx, |pane, window, cx| {
10570            pane.activate_item(1, true, true, window, cx);
10571        });
10572        cx.run_until_parked();
10573
10574        pane.update_in(cx, |pane, window, cx| {
10575            pane.activate_item(0, true, true, window, cx);
10576        });
10577        cx.run_until_parked();
10578
10579        // Simulate file deletion for item1
10580        item1.update(cx, |item, _| {
10581            item.set_has_deleted_file(true);
10582        });
10583
10584        // Emit UpdateTab event to trigger the close behavior
10585        item1.update(cx, |_, cx| {
10586            cx.emit(ItemEvent::UpdateTab);
10587        });
10588        cx.run_until_parked();
10589
10590        // Verify item1 was closed
10591        pane.read_with(cx, |pane, _| {
10592            assert_eq!(
10593                pane.items().count(),
10594                1,
10595                "Should have 1 item remaining after auto-close"
10596            );
10597        });
10598
10599        // Check navigation history after close
10600        let has_item = pane.read_with(cx, |pane, cx| {
10601            let mut has_item = false;
10602            pane.nav_history().for_each_entry(cx, |entry, _| {
10603                if entry.item.id() == item1_id {
10604                    has_item = true;
10605                }
10606            });
10607            has_item
10608        });
10609
10610        assert!(
10611            !has_item,
10612            "Navigation history should not contain closed item entries"
10613        );
10614    }
10615
10616    #[gpui::test]
10617    async fn test_no_save_prompt_when_dirty_multi_buffer_closed_with_all_of_its_dirty_items_present_in_the_pane(
10618        cx: &mut TestAppContext,
10619    ) {
10620        init_test(cx);
10621
10622        let fs = FakeFs::new(cx.background_executor.clone());
10623        let project = Project::test(fs, [], cx).await;
10624        let (workspace, cx) =
10625            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10626        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10627
10628        let dirty_regular_buffer = cx.new(|cx| {
10629            TestItem::new(cx)
10630                .with_dirty(true)
10631                .with_label("1.txt")
10632                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10633        });
10634        let dirty_regular_buffer_2 = cx.new(|cx| {
10635            TestItem::new(cx)
10636                .with_dirty(true)
10637                .with_label("2.txt")
10638                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10639        });
10640        let clear_regular_buffer = cx.new(|cx| {
10641            TestItem::new(cx)
10642                .with_label("3.txt")
10643                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
10644        });
10645
10646        let dirty_multi_buffer = cx.new(|cx| {
10647            TestItem::new(cx)
10648                .with_dirty(true)
10649                .with_buffer_kind(ItemBufferKind::Multibuffer)
10650                .with_label("Fake Project Search")
10651                .with_project_items(&[
10652                    dirty_regular_buffer.read(cx).project_items[0].clone(),
10653                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
10654                    clear_regular_buffer.read(cx).project_items[0].clone(),
10655                ])
10656        });
10657        workspace.update_in(cx, |workspace, window, cx| {
10658            workspace.add_item(
10659                pane.clone(),
10660                Box::new(dirty_regular_buffer.clone()),
10661                None,
10662                false,
10663                false,
10664                window,
10665                cx,
10666            );
10667            workspace.add_item(
10668                pane.clone(),
10669                Box::new(dirty_regular_buffer_2.clone()),
10670                None,
10671                false,
10672                false,
10673                window,
10674                cx,
10675            );
10676            workspace.add_item(
10677                pane.clone(),
10678                Box::new(dirty_multi_buffer.clone()),
10679                None,
10680                false,
10681                false,
10682                window,
10683                cx,
10684            );
10685        });
10686
10687        pane.update_in(cx, |pane, window, cx| {
10688            pane.activate_item(2, true, true, window, cx);
10689            assert_eq!(
10690                pane.active_item().unwrap().item_id(),
10691                dirty_multi_buffer.item_id(),
10692                "Should select the multi buffer in the pane"
10693            );
10694        });
10695        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
10696            pane.close_active_item(
10697                &CloseActiveItem {
10698                    save_intent: None,
10699                    close_pinned: false,
10700                },
10701                window,
10702                cx,
10703            )
10704        });
10705        cx.background_executor.run_until_parked();
10706        assert!(
10707            !cx.has_pending_prompt(),
10708            "All dirty items from the multi buffer are in the pane still, no save prompts should be shown"
10709        );
10710        close_multi_buffer_task
10711            .await
10712            .expect("Closing multi buffer failed");
10713        pane.update(cx, |pane, cx| {
10714            assert_eq!(dirty_regular_buffer.read(cx).save_count, 0);
10715            assert_eq!(dirty_multi_buffer.read(cx).save_count, 0);
10716            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 0);
10717            assert_eq!(
10718                pane.items()
10719                    .map(|item| item.item_id())
10720                    .sorted()
10721                    .collect::<Vec<_>>(),
10722                vec![
10723                    dirty_regular_buffer.item_id(),
10724                    dirty_regular_buffer_2.item_id(),
10725                ],
10726                "Should have no multi buffer left in the pane"
10727            );
10728            assert!(dirty_regular_buffer.read(cx).is_dirty);
10729            assert!(dirty_regular_buffer_2.read(cx).is_dirty);
10730        });
10731    }
10732
10733    #[gpui::test]
10734    async fn test_move_focused_panel_to_next_position(cx: &mut gpui::TestAppContext) {
10735        init_test(cx);
10736        let fs = FakeFs::new(cx.executor());
10737        let project = Project::test(fs, [], cx).await;
10738        let (workspace, cx) =
10739            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10740
10741        // Add a new panel to the right dock, opening the dock and setting the
10742        // focus to the new panel.
10743        let panel = workspace.update_in(cx, |workspace, window, cx| {
10744            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
10745            workspace.add_panel(panel.clone(), window, cx);
10746
10747            workspace
10748                .right_dock()
10749                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
10750
10751            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10752
10753            panel
10754        });
10755
10756        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10757        // panel to the next valid position which, in this case, is the left
10758        // dock.
10759        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10760        workspace.update(cx, |workspace, cx| {
10761            assert!(workspace.left_dock().read(cx).is_open());
10762            assert_eq!(panel.read(cx).position, DockPosition::Left);
10763        });
10764
10765        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10766        // panel to the next valid position which, in this case, is the bottom
10767        // dock.
10768        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10769        workspace.update(cx, |workspace, cx| {
10770            assert!(workspace.bottom_dock().read(cx).is_open());
10771            assert_eq!(panel.read(cx).position, DockPosition::Bottom);
10772        });
10773
10774        // Dispatch the `MoveFocusedPanelToNextPosition` action again, this time
10775        // around moving the panel to its initial position, the right dock.
10776        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10777        workspace.update(cx, |workspace, cx| {
10778            assert!(workspace.right_dock().read(cx).is_open());
10779            assert_eq!(panel.read(cx).position, DockPosition::Right);
10780        });
10781
10782        // Remove focus from the panel, ensuring that, if the panel is not
10783        // focused, the `MoveFocusedPanelToNextPosition` action does not update
10784        // the panel's position, so the panel is still in the right dock.
10785        workspace.update_in(cx, |workspace, window, cx| {
10786            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10787        });
10788
10789        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10790        workspace.update(cx, |workspace, cx| {
10791            assert!(workspace.right_dock().read(cx).is_open());
10792            assert_eq!(panel.read(cx).position, DockPosition::Right);
10793        });
10794    }
10795
10796    #[gpui::test]
10797    async fn test_moving_items_create_panes(cx: &mut TestAppContext) {
10798        init_test(cx);
10799
10800        let fs = FakeFs::new(cx.executor());
10801        let project = Project::test(fs, [], cx).await;
10802        let (workspace, cx) =
10803            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10804
10805        let item_1 = cx.new(|cx| {
10806            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10807        });
10808        workspace.update_in(cx, |workspace, window, cx| {
10809            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10810            workspace.move_item_to_pane_in_direction(
10811                &MoveItemToPaneInDirection {
10812                    direction: SplitDirection::Right,
10813                    focus: true,
10814                    clone: false,
10815                },
10816                window,
10817                cx,
10818            );
10819            workspace.move_item_to_pane_at_index(
10820                &MoveItemToPane {
10821                    destination: 3,
10822                    focus: true,
10823                    clone: false,
10824                },
10825                window,
10826                cx,
10827            );
10828
10829            assert_eq!(workspace.panes.len(), 1, "No new panes were created");
10830            assert_eq!(
10831                pane_items_paths(&workspace.active_pane, cx),
10832                vec!["first.txt".to_string()],
10833                "Single item was not moved anywhere"
10834            );
10835        });
10836
10837        let item_2 = cx.new(|cx| {
10838            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "second.txt", cx)])
10839        });
10840        workspace.update_in(cx, |workspace, window, cx| {
10841            workspace.add_item_to_active_pane(Box::new(item_2), None, true, window, cx);
10842            assert_eq!(
10843                pane_items_paths(&workspace.panes[0], cx),
10844                vec!["first.txt".to_string(), "second.txt".to_string()],
10845            );
10846            workspace.move_item_to_pane_in_direction(
10847                &MoveItemToPaneInDirection {
10848                    direction: SplitDirection::Right,
10849                    focus: true,
10850                    clone: false,
10851                },
10852                window,
10853                cx,
10854            );
10855
10856            assert_eq!(workspace.panes.len(), 2, "A new pane should be created");
10857            assert_eq!(
10858                pane_items_paths(&workspace.panes[0], cx),
10859                vec!["first.txt".to_string()],
10860                "After moving, one item should be left in the original pane"
10861            );
10862            assert_eq!(
10863                pane_items_paths(&workspace.panes[1], cx),
10864                vec!["second.txt".to_string()],
10865                "New item should have been moved to the new pane"
10866            );
10867        });
10868
10869        let item_3 = cx.new(|cx| {
10870            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "third.txt", cx)])
10871        });
10872        workspace.update_in(cx, |workspace, window, cx| {
10873            let original_pane = workspace.panes[0].clone();
10874            workspace.set_active_pane(&original_pane, window, cx);
10875            workspace.add_item_to_active_pane(Box::new(item_3), None, true, window, cx);
10876            assert_eq!(workspace.panes.len(), 2, "No new panes were created");
10877            assert_eq!(
10878                pane_items_paths(&workspace.active_pane, cx),
10879                vec!["first.txt".to_string(), "third.txt".to_string()],
10880                "New pane should be ready to move one item out"
10881            );
10882
10883            workspace.move_item_to_pane_at_index(
10884                &MoveItemToPane {
10885                    destination: 3,
10886                    focus: true,
10887                    clone: false,
10888                },
10889                window,
10890                cx,
10891            );
10892            assert_eq!(workspace.panes.len(), 3, "A new pane should be created");
10893            assert_eq!(
10894                pane_items_paths(&workspace.active_pane, cx),
10895                vec!["first.txt".to_string()],
10896                "After moving, one item should be left in the original pane"
10897            );
10898            assert_eq!(
10899                pane_items_paths(&workspace.panes[1], cx),
10900                vec!["second.txt".to_string()],
10901                "Previously created pane should be unchanged"
10902            );
10903            assert_eq!(
10904                pane_items_paths(&workspace.panes[2], cx),
10905                vec!["third.txt".to_string()],
10906                "New item should have been moved to the new pane"
10907            );
10908        });
10909    }
10910
10911    #[gpui::test]
10912    async fn test_moving_items_can_clone_panes(cx: &mut TestAppContext) {
10913        init_test(cx);
10914
10915        let fs = FakeFs::new(cx.executor());
10916        let project = Project::test(fs, [], cx).await;
10917        let (workspace, cx) =
10918            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10919
10920        let item_1 = cx.new(|cx| {
10921            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10922        });
10923        workspace.update_in(cx, |workspace, window, cx| {
10924            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10925            workspace.move_item_to_pane_in_direction(
10926                &MoveItemToPaneInDirection {
10927                    direction: SplitDirection::Right,
10928                    focus: true,
10929                    clone: true,
10930                },
10931                window,
10932                cx,
10933            );
10934            workspace.move_item_to_pane_at_index(
10935                &MoveItemToPane {
10936                    destination: 3,
10937                    focus: true,
10938                    clone: true,
10939                },
10940                window,
10941                cx,
10942            );
10943        });
10944        cx.run_until_parked();
10945
10946        workspace.update(cx, |workspace, cx| {
10947            assert_eq!(workspace.panes.len(), 3, "Two new panes were created");
10948            for pane in workspace.panes() {
10949                assert_eq!(
10950                    pane_items_paths(pane, cx),
10951                    vec!["first.txt".to_string()],
10952                    "Single item exists in all panes"
10953                );
10954            }
10955        });
10956
10957        // verify that the active pane has been updated after waiting for the
10958        // pane focus event to fire and resolve
10959        workspace.read_with(cx, |workspace, _app| {
10960            assert_eq!(
10961                workspace.active_pane(),
10962                &workspace.panes[2],
10963                "The third pane should be the active one: {:?}",
10964                workspace.panes
10965            );
10966        })
10967    }
10968
10969    mod register_project_item_tests {
10970
10971        use super::*;
10972
10973        // View
10974        struct TestPngItemView {
10975            focus_handle: FocusHandle,
10976        }
10977        // Model
10978        struct TestPngItem {}
10979
10980        impl project::ProjectItem for TestPngItem {
10981            fn try_open(
10982                _project: &Entity<Project>,
10983                path: &ProjectPath,
10984                cx: &mut App,
10985            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10986                if path.path.extension().unwrap() == "png" {
10987                    Some(cx.spawn(async move |cx| cx.new(|_| TestPngItem {})))
10988                } else {
10989                    None
10990                }
10991            }
10992
10993            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10994                None
10995            }
10996
10997            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10998                None
10999            }
11000
11001            fn is_dirty(&self) -> bool {
11002                false
11003            }
11004        }
11005
11006        impl Item for TestPngItemView {
11007            type Event = ();
11008            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
11009                "".into()
11010            }
11011        }
11012        impl EventEmitter<()> for TestPngItemView {}
11013        impl Focusable for TestPngItemView {
11014            fn focus_handle(&self, _cx: &App) -> FocusHandle {
11015                self.focus_handle.clone()
11016            }
11017        }
11018
11019        impl Render for TestPngItemView {
11020            fn render(
11021                &mut self,
11022                _window: &mut Window,
11023                _cx: &mut Context<Self>,
11024            ) -> impl IntoElement {
11025                Empty
11026            }
11027        }
11028
11029        impl ProjectItem for TestPngItemView {
11030            type Item = TestPngItem;
11031
11032            fn for_project_item(
11033                _project: Entity<Project>,
11034                _pane: Option<&Pane>,
11035                _item: Entity<Self::Item>,
11036                _: &mut Window,
11037                cx: &mut Context<Self>,
11038            ) -> Self
11039            where
11040                Self: Sized,
11041            {
11042                Self {
11043                    focus_handle: cx.focus_handle(),
11044                }
11045            }
11046        }
11047
11048        // View
11049        struct TestIpynbItemView {
11050            focus_handle: FocusHandle,
11051        }
11052        // Model
11053        struct TestIpynbItem {}
11054
11055        impl project::ProjectItem for TestIpynbItem {
11056            fn try_open(
11057                _project: &Entity<Project>,
11058                path: &ProjectPath,
11059                cx: &mut App,
11060            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
11061                if path.path.extension().unwrap() == "ipynb" {
11062                    Some(cx.spawn(async move |cx| cx.new(|_| TestIpynbItem {})))
11063                } else {
11064                    None
11065                }
11066            }
11067
11068            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
11069                None
11070            }
11071
11072            fn project_path(&self, _: &App) -> Option<ProjectPath> {
11073                None
11074            }
11075
11076            fn is_dirty(&self) -> bool {
11077                false
11078            }
11079        }
11080
11081        impl Item for TestIpynbItemView {
11082            type Event = ();
11083            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
11084                "".into()
11085            }
11086        }
11087        impl EventEmitter<()> for TestIpynbItemView {}
11088        impl Focusable for TestIpynbItemView {
11089            fn focus_handle(&self, _cx: &App) -> FocusHandle {
11090                self.focus_handle.clone()
11091            }
11092        }
11093
11094        impl Render for TestIpynbItemView {
11095            fn render(
11096                &mut self,
11097                _window: &mut Window,
11098                _cx: &mut Context<Self>,
11099            ) -> impl IntoElement {
11100                Empty
11101            }
11102        }
11103
11104        impl ProjectItem for TestIpynbItemView {
11105            type Item = TestIpynbItem;
11106
11107            fn for_project_item(
11108                _project: Entity<Project>,
11109                _pane: Option<&Pane>,
11110                _item: Entity<Self::Item>,
11111                _: &mut Window,
11112                cx: &mut Context<Self>,
11113            ) -> Self
11114            where
11115                Self: Sized,
11116            {
11117                Self {
11118                    focus_handle: cx.focus_handle(),
11119                }
11120            }
11121        }
11122
11123        struct TestAlternatePngItemView {
11124            focus_handle: FocusHandle,
11125        }
11126
11127        impl Item for TestAlternatePngItemView {
11128            type Event = ();
11129            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
11130                "".into()
11131            }
11132        }
11133
11134        impl EventEmitter<()> for TestAlternatePngItemView {}
11135        impl Focusable for TestAlternatePngItemView {
11136            fn focus_handle(&self, _cx: &App) -> FocusHandle {
11137                self.focus_handle.clone()
11138            }
11139        }
11140
11141        impl Render for TestAlternatePngItemView {
11142            fn render(
11143                &mut self,
11144                _window: &mut Window,
11145                _cx: &mut Context<Self>,
11146            ) -> impl IntoElement {
11147                Empty
11148            }
11149        }
11150
11151        impl ProjectItem for TestAlternatePngItemView {
11152            type Item = TestPngItem;
11153
11154            fn for_project_item(
11155                _project: Entity<Project>,
11156                _pane: Option<&Pane>,
11157                _item: Entity<Self::Item>,
11158                _: &mut Window,
11159                cx: &mut Context<Self>,
11160            ) -> Self
11161            where
11162                Self: Sized,
11163            {
11164                Self {
11165                    focus_handle: cx.focus_handle(),
11166                }
11167            }
11168        }
11169
11170        #[gpui::test]
11171        async fn test_register_project_item(cx: &mut TestAppContext) {
11172            init_test(cx);
11173
11174            cx.update(|cx| {
11175                register_project_item::<TestPngItemView>(cx);
11176                register_project_item::<TestIpynbItemView>(cx);
11177            });
11178
11179            let fs = FakeFs::new(cx.executor());
11180            fs.insert_tree(
11181                "/root1",
11182                json!({
11183                    "one.png": "BINARYDATAHERE",
11184                    "two.ipynb": "{ totally a notebook }",
11185                    "three.txt": "editing text, sure why not?"
11186                }),
11187            )
11188            .await;
11189
11190            let project = Project::test(fs, ["root1".as_ref()], cx).await;
11191            let (workspace, cx) =
11192                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
11193
11194            let worktree_id = project.update(cx, |project, cx| {
11195                project.worktrees(cx).next().unwrap().read(cx).id()
11196            });
11197
11198            let handle = workspace
11199                .update_in(cx, |workspace, window, cx| {
11200                    let project_path = (worktree_id, rel_path("one.png"));
11201                    workspace.open_path(project_path, None, true, window, cx)
11202                })
11203                .await
11204                .unwrap();
11205
11206            // Now we can check if the handle we got back errored or not
11207            assert_eq!(
11208                handle.to_any().entity_type(),
11209                TypeId::of::<TestPngItemView>()
11210            );
11211
11212            let handle = workspace
11213                .update_in(cx, |workspace, window, cx| {
11214                    let project_path = (worktree_id, rel_path("two.ipynb"));
11215                    workspace.open_path(project_path, None, true, window, cx)
11216                })
11217                .await
11218                .unwrap();
11219
11220            assert_eq!(
11221                handle.to_any().entity_type(),
11222                TypeId::of::<TestIpynbItemView>()
11223            );
11224
11225            let handle = workspace
11226                .update_in(cx, |workspace, window, cx| {
11227                    let project_path = (worktree_id, rel_path("three.txt"));
11228                    workspace.open_path(project_path, None, true, window, cx)
11229                })
11230                .await;
11231            assert!(handle.is_err());
11232        }
11233
11234        #[gpui::test]
11235        async fn test_register_project_item_two_enter_one_leaves(cx: &mut TestAppContext) {
11236            init_test(cx);
11237
11238            cx.update(|cx| {
11239                register_project_item::<TestPngItemView>(cx);
11240                register_project_item::<TestAlternatePngItemView>(cx);
11241            });
11242
11243            let fs = FakeFs::new(cx.executor());
11244            fs.insert_tree(
11245                "/root1",
11246                json!({
11247                    "one.png": "BINARYDATAHERE",
11248                    "two.ipynb": "{ totally a notebook }",
11249                    "three.txt": "editing text, sure why not?"
11250                }),
11251            )
11252            .await;
11253            let project = Project::test(fs, ["root1".as_ref()], cx).await;
11254            let (workspace, cx) =
11255                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
11256            let worktree_id = project.update(cx, |project, cx| {
11257                project.worktrees(cx).next().unwrap().read(cx).id()
11258            });
11259
11260            let handle = workspace
11261                .update_in(cx, |workspace, window, cx| {
11262                    let project_path = (worktree_id, rel_path("one.png"));
11263                    workspace.open_path(project_path, None, true, window, cx)
11264                })
11265                .await
11266                .unwrap();
11267
11268            // This _must_ be the second item registered
11269            assert_eq!(
11270                handle.to_any().entity_type(),
11271                TypeId::of::<TestAlternatePngItemView>()
11272            );
11273
11274            let handle = workspace
11275                .update_in(cx, |workspace, window, cx| {
11276                    let project_path = (worktree_id, rel_path("three.txt"));
11277                    workspace.open_path(project_path, None, true, window, cx)
11278                })
11279                .await;
11280            assert!(handle.is_err());
11281        }
11282    }
11283
11284    #[gpui::test]
11285    async fn test_status_bar_visibility(cx: &mut TestAppContext) {
11286        init_test(cx);
11287
11288        let fs = FakeFs::new(cx.executor());
11289        let project = Project::test(fs, [], cx).await;
11290        let (workspace, _cx) =
11291            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
11292
11293        // Test with status bar shown (default)
11294        workspace.read_with(cx, |workspace, cx| {
11295            let visible = workspace.status_bar_visible(cx);
11296            assert!(visible, "Status bar should be visible by default");
11297        });
11298
11299        // Test with status bar hidden
11300        cx.update_global(|store: &mut SettingsStore, cx| {
11301            store.update_user_settings(cx, |settings| {
11302                settings.status_bar.get_or_insert_default().show = Some(false);
11303            });
11304        });
11305
11306        workspace.read_with(cx, |workspace, cx| {
11307            let visible = workspace.status_bar_visible(cx);
11308            assert!(!visible, "Status bar should be hidden when show is false");
11309        });
11310
11311        // Test with status bar shown explicitly
11312        cx.update_global(|store: &mut SettingsStore, cx| {
11313            store.update_user_settings(cx, |settings| {
11314                settings.status_bar.get_or_insert_default().show = Some(true);
11315            });
11316        });
11317
11318        workspace.read_with(cx, |workspace, cx| {
11319            let visible = workspace.status_bar_visible(cx);
11320            assert!(visible, "Status bar should be visible when show is true");
11321        });
11322    }
11323
11324    fn pane_items_paths(pane: &Entity<Pane>, cx: &App) -> Vec<String> {
11325        pane.read(cx)
11326            .items()
11327            .flat_map(|item| {
11328                item.project_paths(cx)
11329                    .into_iter()
11330                    .map(|path| path.path.display(PathStyle::local()).into_owned())
11331            })
11332            .collect()
11333    }
11334
11335    pub fn init_test(cx: &mut TestAppContext) {
11336        cx.update(|cx| {
11337            let settings_store = SettingsStore::test(cx);
11338            cx.set_global(settings_store);
11339            theme::init(theme::LoadThemes::JustBase, cx);
11340            language::init(cx);
11341            crate::init_settings(cx);
11342            Project::init_settings(cx);
11343        });
11344    }
11345
11346    fn dirty_project_item(id: u64, path: &str, cx: &mut App) -> Entity<TestProjectItem> {
11347        let item = TestProjectItem::new(id, path, cx);
11348        item.update(cx, |item, _| {
11349            item.is_dirty = true;
11350        });
11351        item
11352    }
11353}