workspace.rs

    1pub mod dock;
    2pub mod history_manager;
    3pub mod invalid_buffer_view;
    4pub mod item;
    5mod modal_layer;
    6pub mod notifications;
    7pub mod pane;
    8pub mod pane_group;
    9mod path_list;
   10mod persistence;
   11pub mod searchable;
   12pub mod shared_screen;
   13mod status_bar;
   14pub mod tasks;
   15mod theme_preview;
   16mod toast_layer;
   17mod toolbar;
   18mod workspace_settings;
   19
   20pub use crate::notifications::NotificationFrame;
   21pub use dock::Panel;
   22pub use path_list::PathList;
   23pub use toast_layer::{ToastAction, ToastLayer, ToastView};
   24
   25use anyhow::{Context as _, Result, anyhow};
   26use call::{ActiveCall, call_settings::CallSettings};
   27use client::{
   28    ChannelId, Client, ErrorExt, Status, TypedEnvelope, UserStore,
   29    proto::{self, ErrorCode, PanelId, PeerId},
   30};
   31use collections::{HashMap, HashSet, hash_map};
   32use dock::{Dock, DockPosition, PanelButtons, PanelHandle, RESIZE_HANDLE_SIZE};
   33use futures::{
   34    Future, FutureExt, StreamExt,
   35    channel::{
   36        mpsc::{self, UnboundedReceiver, UnboundedSender},
   37        oneshot,
   38    },
   39    future::{Shared, try_join_all},
   40};
   41use gpui::{
   42    Action, AnyEntity, AnyView, AnyWeakView, App, AsyncApp, AsyncWindowContext, Bounds, Context,
   43    CursorStyle, Decorations, DragMoveEvent, Entity, EntityId, EventEmitter, FocusHandle,
   44    Focusable, Global, HitboxBehavior, Hsla, KeyContext, Keystroke, ManagedView, MouseButton,
   45    PathPromptOptions, Point, PromptLevel, Render, ResizeEdge, Size, Stateful, Subscription,
   46    SystemWindowTabController, Task, Tiling, WeakEntity, WindowBounds, WindowHandle, WindowId,
   47    WindowOptions, actions, canvas, point, relative, size, transparent_black,
   48};
   49pub use history_manager::*;
   50pub use item::{
   51    FollowableItem, FollowableItemHandle, Item, ItemHandle, ItemSettings, PreviewTabsSettings,
   52    ProjectItem, SerializableItem, SerializableItemHandle, WeakItemHandle,
   53};
   54use itertools::Itertools;
   55use language::{
   56    Buffer, LanguageRegistry, Rope,
   57    language_settings::{AllLanguageSettings, all_language_settings},
   58};
   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::*;
   67use persistence::{DB, SerializedWindowBounds, model::SerializedWorkspace};
   68pub use persistence::{
   69    DB as WORKSPACE_DB, WorkspaceDb, delete_unloaded_items,
   70    model::{ItemId, SerializedWorkspaceLocation},
   71};
   72use postage::stream::Stream;
   73use project::{
   74    DirectoryLister, Project, ProjectEntryId, ProjectPath, ResolvedPath, Worktree, WorktreeId,
   75    WorktreeSettings,
   76    debugger::{breakpoint_store::BreakpointStoreEvent, session::ThreadStatus},
   77    toolchain_store::ToolchainStoreEvent,
   78};
   79use remote::{RemoteClientDelegate, RemoteConnectionOptions, remote_client::ConnectionIdentifier};
   80use schemars::JsonSchema;
   81use serde::Deserialize;
   82use session::AppSession;
   83use settings::{Settings, SettingsLocation, update_settings_file};
   84use shared_screen::SharedScreen;
   85use sqlez::{
   86    bindable::{Bind, Column, StaticColumnCount},
   87    statement::Statement,
   88};
   89use status_bar::StatusBar;
   90pub use status_bar::StatusItemView;
   91use std::{
   92    any::TypeId,
   93    borrow::Cow,
   94    cell::RefCell,
   95    cmp,
   96    collections::{VecDeque, hash_map::DefaultHasher},
   97    env,
   98    hash::{Hash, Hasher},
   99    path::{Path, PathBuf},
  100    process::ExitStatus,
  101    rc::Rc,
  102    sync::{Arc, LazyLock, Weak, atomic::AtomicUsize},
  103    time::Duration,
  104};
  105use task::{DebugScenario, SpawnInTerminal, TaskContext};
  106use theme::{ActiveTheme, SystemAppearance, ThemeSettings};
  107pub use toolbar::{Toolbar, ToolbarItemEvent, ToolbarItemLocation, ToolbarItemView};
  108pub use ui;
  109use ui::{Window, prelude::*};
  110use util::{ResultExt, TryFutureExt, paths::SanitizedPath, serde::default_true};
  111use uuid::Uuid;
  112pub use workspace_settings::{
  113    AutosaveSetting, BottomDockLayout, RestoreOnStartupBehavior, TabBarSettings, WorkspaceSettings,
  114};
  115use zed_actions::{Spawn, feedback::FileBugReport};
  116
  117use crate::notifications::NotificationId;
  118use crate::persistence::{
  119    SerializedAxis,
  120    model::{DockData, DockStructure, SerializedItem, SerializedPane, SerializedPaneGroup},
  121};
  122
  123pub const SERIALIZATION_THROTTLE_TIME: Duration = Duration::from_millis(200);
  124
  125static ZED_WINDOW_SIZE: LazyLock<Option<Size<Pixels>>> = LazyLock::new(|| {
  126    env::var("ZED_WINDOW_SIZE")
  127        .ok()
  128        .as_deref()
  129        .and_then(parse_pixel_size_env_var)
  130});
  131
  132static ZED_WINDOW_POSITION: LazyLock<Option<Point<Pixels>>> = LazyLock::new(|| {
  133    env::var("ZED_WINDOW_POSITION")
  134        .ok()
  135        .as_deref()
  136        .and_then(parse_pixel_position_env_var)
  137});
  138
  139pub trait TerminalProvider {
  140    fn spawn(
  141        &self,
  142        task: SpawnInTerminal,
  143        window: &mut Window,
  144        cx: &mut App,
  145    ) -> Task<Option<Result<ExitStatus>>>;
  146}
  147
  148pub trait DebuggerProvider {
  149    // `active_buffer` is used to resolve build task's name against language-specific tasks.
  150    fn start_session(
  151        &self,
  152        definition: DebugScenario,
  153        task_context: TaskContext,
  154        active_buffer: Option<Entity<Buffer>>,
  155        worktree_id: Option<WorktreeId>,
  156        window: &mut Window,
  157        cx: &mut App,
  158    );
  159
  160    fn spawn_task_or_modal(
  161        &self,
  162        workspace: &mut Workspace,
  163        action: &Spawn,
  164        window: &mut Window,
  165        cx: &mut Context<Workspace>,
  166    );
  167
  168    fn task_scheduled(&self, cx: &mut App);
  169    fn debug_scenario_scheduled(&self, cx: &mut App);
  170    fn debug_scenario_scheduled_last(&self, cx: &App) -> bool;
  171
  172    fn active_thread_state(&self, cx: &App) -> Option<ThreadStatus>;
  173}
  174
  175actions!(
  176    workspace,
  177    [
  178        /// Activates the next pane in the workspace.
  179        ActivateNextPane,
  180        /// Activates the previous pane in the workspace.
  181        ActivatePreviousPane,
  182        /// Switches to the next window.
  183        ActivateNextWindow,
  184        /// Switches to the previous window.
  185        ActivatePreviousWindow,
  186        /// Adds a folder to the current project.
  187        AddFolderToProject,
  188        /// Clears all notifications.
  189        ClearAllNotifications,
  190        /// Closes the active dock.
  191        CloseActiveDock,
  192        /// Closes all docks.
  193        CloseAllDocks,
  194        /// Closes the current window.
  195        CloseWindow,
  196        /// Opens the feedback dialog.
  197        Feedback,
  198        /// Follows the next collaborator in the session.
  199        FollowNextCollaborator,
  200        /// Moves the focused panel to the next position.
  201        MoveFocusedPanelToNextPosition,
  202        /// Opens a new terminal in the center.
  203        NewCenterTerminal,
  204        /// Creates a new file.
  205        NewFile,
  206        /// Creates a new file in a vertical split.
  207        NewFileSplitVertical,
  208        /// Creates a new file in a horizontal split.
  209        NewFileSplitHorizontal,
  210        /// Opens a new search.
  211        NewSearch,
  212        /// Opens a new terminal.
  213        NewTerminal,
  214        /// Opens a new window.
  215        NewWindow,
  216        /// Opens a file or directory.
  217        Open,
  218        /// Opens multiple files.
  219        OpenFiles,
  220        /// Opens the current location in terminal.
  221        OpenInTerminal,
  222        /// Opens the component preview.
  223        OpenComponentPreview,
  224        /// Reloads the active item.
  225        ReloadActiveItem,
  226        /// Resets the active dock to its default size.
  227        ResetActiveDockSize,
  228        /// Resets all open docks to their default sizes.
  229        ResetOpenDocksSize,
  230        /// Reloads the application
  231        Reload,
  232        /// Saves the current file with a new name.
  233        SaveAs,
  234        /// Saves without formatting.
  235        SaveWithoutFormat,
  236        /// Shuts down all debug adapters.
  237        ShutdownDebugAdapters,
  238        /// Suppresses the current notification.
  239        SuppressNotification,
  240        /// Toggles the bottom dock.
  241        ToggleBottomDock,
  242        /// Toggles centered layout mode.
  243        ToggleCenteredLayout,
  244        /// Toggles edit prediction feature globally for all files.
  245        ToggleEditPrediction,
  246        /// Toggles the left dock.
  247        ToggleLeftDock,
  248        /// Toggles the right dock.
  249        ToggleRightDock,
  250        /// Toggles zoom on the active pane.
  251        ToggleZoom,
  252        /// Stops following a collaborator.
  253        Unfollow,
  254        /// Restores the banner.
  255        RestoreBanner,
  256        /// Toggles expansion of the selected item.
  257        ToggleExpandItem,
  258    ]
  259);
  260
  261/// Activates a specific pane by its index.
  262#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  263#[action(namespace = workspace)]
  264pub struct ActivatePane(pub usize);
  265
  266/// Moves an item to a specific pane by index.
  267#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  268#[action(namespace = workspace)]
  269#[serde(deny_unknown_fields)]
  270pub struct MoveItemToPane {
  271    #[serde(default = "default_1")]
  272    pub destination: usize,
  273    #[serde(default = "default_true")]
  274    pub focus: bool,
  275    #[serde(default)]
  276    pub clone: bool,
  277}
  278
  279fn default_1() -> usize {
  280    1
  281}
  282
  283/// Moves an item to a pane in the specified direction.
  284#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  285#[action(namespace = workspace)]
  286#[serde(deny_unknown_fields)]
  287pub struct MoveItemToPaneInDirection {
  288    #[serde(default = "default_right")]
  289    pub direction: SplitDirection,
  290    #[serde(default = "default_true")]
  291    pub focus: bool,
  292    #[serde(default)]
  293    pub clone: bool,
  294}
  295
  296fn default_right() -> SplitDirection {
  297    SplitDirection::Right
  298}
  299
  300/// Saves all open files in the workspace.
  301#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  302#[action(namespace = workspace)]
  303#[serde(deny_unknown_fields)]
  304pub struct SaveAll {
  305    #[serde(default)]
  306    pub save_intent: Option<SaveIntent>,
  307}
  308
  309/// Saves the current file with the specified options.
  310#[derive(Clone, PartialEq, Debug, Deserialize, JsonSchema, Action)]
  311#[action(namespace = workspace)]
  312#[serde(deny_unknown_fields)]
  313pub struct Save {
  314    #[serde(default)]
  315    pub save_intent: Option<SaveIntent>,
  316}
  317
  318/// Closes all items and panes in the workspace.
  319#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  320#[action(namespace = workspace)]
  321#[serde(deny_unknown_fields)]
  322pub struct CloseAllItemsAndPanes {
  323    #[serde(default)]
  324    pub save_intent: Option<SaveIntent>,
  325}
  326
  327/// Closes all inactive tabs and panes in the workspace.
  328#[derive(Clone, PartialEq, Debug, Deserialize, Default, JsonSchema, Action)]
  329#[action(namespace = workspace)]
  330#[serde(deny_unknown_fields)]
  331pub struct CloseInactiveTabsAndPanes {
  332    #[serde(default)]
  333    pub save_intent: Option<SaveIntent>,
  334}
  335
  336/// Sends a sequence of keystrokes to the active element.
  337#[derive(Clone, Deserialize, PartialEq, JsonSchema, Action)]
  338#[action(namespace = workspace)]
  339pub struct SendKeystrokes(pub String);
  340
  341actions!(
  342    project_symbols,
  343    [
  344        /// Toggles the project symbols search.
  345        #[action(name = "Toggle")]
  346        ToggleProjectSymbols
  347    ]
  348);
  349
  350/// Toggles the file finder interface.
  351#[derive(Default, PartialEq, Eq, Clone, Deserialize, JsonSchema, Action)]
  352#[action(namespace = file_finder, name = "Toggle")]
  353#[serde(deny_unknown_fields)]
  354pub struct ToggleFileFinder {
  355    #[serde(default)]
  356    pub separate_history: bool,
  357}
  358
  359/// Increases size of a currently focused dock by a given amount of pixels.
  360#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  361#[action(namespace = workspace)]
  362#[serde(deny_unknown_fields)]
  363pub struct IncreaseActiveDockSize {
  364    /// For 0px parameter, uses UI font size value.
  365    #[serde(default)]
  366    pub px: u32,
  367}
  368
  369/// Decreases size of a currently focused dock by a given amount of pixels.
  370#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  371#[action(namespace = workspace)]
  372#[serde(deny_unknown_fields)]
  373pub struct DecreaseActiveDockSize {
  374    /// For 0px parameter, uses UI font size value.
  375    #[serde(default)]
  376    pub px: u32,
  377}
  378
  379/// Increases size of all currently visible docks uniformly, by a given amount of pixels.
  380#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  381#[action(namespace = workspace)]
  382#[serde(deny_unknown_fields)]
  383pub struct IncreaseOpenDocksSize {
  384    /// For 0px parameter, uses UI font size value.
  385    #[serde(default)]
  386    pub px: u32,
  387}
  388
  389/// Decreases size of all currently visible docks uniformly, by a given amount of pixels.
  390#[derive(Clone, PartialEq, Deserialize, JsonSchema, Action)]
  391#[action(namespace = workspace)]
  392#[serde(deny_unknown_fields)]
  393pub struct DecreaseOpenDocksSize {
  394    /// For 0px parameter, uses UI font size value.
  395    #[serde(default)]
  396    pub px: u32,
  397}
  398
  399actions!(
  400    workspace,
  401    [
  402        /// Activates the pane to the left.
  403        ActivatePaneLeft,
  404        /// Activates the pane to the right.
  405        ActivatePaneRight,
  406        /// Activates the pane above.
  407        ActivatePaneUp,
  408        /// Activates the pane below.
  409        ActivatePaneDown,
  410        /// Swaps the current pane with the one to the left.
  411        SwapPaneLeft,
  412        /// Swaps the current pane with the one to the right.
  413        SwapPaneRight,
  414        /// Swaps the current pane with the one above.
  415        SwapPaneUp,
  416        /// Swaps the current pane with the one below.
  417        SwapPaneDown,
  418    ]
  419);
  420
  421#[derive(PartialEq, Eq, Debug)]
  422pub enum CloseIntent {
  423    /// Quit the program entirely.
  424    Quit,
  425    /// Close a window.
  426    CloseWindow,
  427    /// Replace the workspace in an existing window.
  428    ReplaceWindow,
  429}
  430
  431#[derive(Clone)]
  432pub struct Toast {
  433    id: NotificationId,
  434    msg: Cow<'static, str>,
  435    autohide: bool,
  436    on_click: Option<(Cow<'static, str>, Arc<dyn Fn(&mut Window, &mut App)>)>,
  437}
  438
  439impl Toast {
  440    pub fn new<I: Into<Cow<'static, str>>>(id: NotificationId, msg: I) -> Self {
  441        Toast {
  442            id,
  443            msg: msg.into(),
  444            on_click: None,
  445            autohide: false,
  446        }
  447    }
  448
  449    pub fn on_click<F, M>(mut self, message: M, on_click: F) -> Self
  450    where
  451        M: Into<Cow<'static, str>>,
  452        F: Fn(&mut Window, &mut App) + 'static,
  453    {
  454        self.on_click = Some((message.into(), Arc::new(on_click)));
  455        self
  456    }
  457
  458    pub fn autohide(mut self) -> Self {
  459        self.autohide = true;
  460        self
  461    }
  462}
  463
  464impl PartialEq for Toast {
  465    fn eq(&self, other: &Self) -> bool {
  466        self.id == other.id
  467            && self.msg == other.msg
  468            && self.on_click.is_some() == other.on_click.is_some()
  469    }
  470}
  471
  472/// Opens a new terminal with the specified working directory.
  473#[derive(Debug, Default, Clone, Deserialize, PartialEq, JsonSchema, Action)]
  474#[action(namespace = workspace)]
  475#[serde(deny_unknown_fields)]
  476pub struct OpenTerminal {
  477    pub working_directory: PathBuf,
  478}
  479
  480#[derive(Clone, Copy, Debug, Default, Hash, PartialEq, Eq, PartialOrd, Ord)]
  481pub struct WorkspaceId(i64);
  482
  483impl StaticColumnCount for WorkspaceId {}
  484impl Bind for WorkspaceId {
  485    fn bind(&self, statement: &Statement, start_index: i32) -> Result<i32> {
  486        self.0.bind(statement, start_index)
  487    }
  488}
  489impl Column for WorkspaceId {
  490    fn column(statement: &mut Statement, start_index: i32) -> Result<(Self, i32)> {
  491        i64::column(statement, start_index)
  492            .map(|(i, next_index)| (Self(i), next_index))
  493            .with_context(|| format!("Failed to read WorkspaceId at index {start_index}"))
  494    }
  495}
  496impl From<WorkspaceId> for i64 {
  497    fn from(val: WorkspaceId) -> Self {
  498        val.0
  499    }
  500}
  501
  502pub fn init_settings(cx: &mut App) {
  503    WorkspaceSettings::register(cx);
  504    ItemSettings::register(cx);
  505    PreviewTabsSettings::register(cx);
  506    TabBarSettings::register(cx);
  507}
  508
  509fn prompt_and_open_paths(app_state: Arc<AppState>, options: PathPromptOptions, cx: &mut App) {
  510    let paths = cx.prompt_for_paths(options);
  511    cx.spawn(
  512        async move |cx| match paths.await.anyhow().and_then(|res| res) {
  513            Ok(Some(paths)) => {
  514                cx.update(|cx| {
  515                    open_paths(&paths, app_state, OpenOptions::default(), cx).detach_and_log_err(cx)
  516                })
  517                .ok();
  518            }
  519            Ok(None) => {}
  520            Err(err) => {
  521                util::log_err(&err);
  522                cx.update(|cx| {
  523                    if let Some(workspace_window) = cx
  524                        .active_window()
  525                        .and_then(|window| window.downcast::<Workspace>())
  526                    {
  527                        workspace_window
  528                            .update(cx, |workspace, _, cx| {
  529                                workspace.show_portal_error(err.to_string(), cx);
  530                            })
  531                            .ok();
  532                    }
  533                })
  534                .ok();
  535            }
  536        },
  537    )
  538    .detach();
  539}
  540
  541pub fn init(app_state: Arc<AppState>, cx: &mut App) {
  542    init_settings(cx);
  543    component::init();
  544    theme_preview::init(cx);
  545    toast_layer::init(cx);
  546    history_manager::init(cx);
  547
  548    cx.on_action(|_: &CloseWindow, cx| Workspace::close_global(cx));
  549    cx.on_action(|_: &Reload, cx| reload(cx));
  550
  551    cx.on_action({
  552        let app_state = Arc::downgrade(&app_state);
  553        move |_: &Open, cx: &mut App| {
  554            if let Some(app_state) = app_state.upgrade() {
  555                prompt_and_open_paths(
  556                    app_state,
  557                    PathPromptOptions {
  558                        files: true,
  559                        directories: true,
  560                        multiple: true,
  561                        prompt: None,
  562                    },
  563                    cx,
  564                );
  565            }
  566        }
  567    });
  568    cx.on_action({
  569        let app_state = Arc::downgrade(&app_state);
  570        move |_: &OpenFiles, cx: &mut App| {
  571            let directories = cx.can_select_mixed_files_and_dirs();
  572            if let Some(app_state) = app_state.upgrade() {
  573                prompt_and_open_paths(
  574                    app_state,
  575                    PathPromptOptions {
  576                        files: true,
  577                        directories,
  578                        multiple: true,
  579                        prompt: None,
  580                    },
  581                    cx,
  582                );
  583            }
  584        }
  585    });
  586}
  587
  588type BuildProjectItemFn =
  589    fn(AnyEntity, Entity<Project>, Option<&Pane>, &mut Window, &mut App) -> Box<dyn ItemHandle>;
  590
  591type BuildProjectItemForPathFn =
  592    fn(
  593        &Entity<Project>,
  594        &ProjectPath,
  595        &mut Window,
  596        &mut App,
  597    ) -> Option<Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>>>;
  598
  599#[derive(Clone, Default)]
  600struct ProjectItemRegistry {
  601    build_project_item_fns_by_type: HashMap<TypeId, BuildProjectItemFn>,
  602    build_project_item_for_path_fns: Vec<BuildProjectItemForPathFn>,
  603}
  604
  605impl ProjectItemRegistry {
  606    fn register<T: ProjectItem>(&mut self) {
  607        self.build_project_item_fns_by_type.insert(
  608            TypeId::of::<T::Item>(),
  609            |item, project, pane, window, cx| {
  610                let item = item.downcast().unwrap();
  611                Box::new(cx.new(|cx| T::for_project_item(project, pane, item, window, cx)))
  612                    as Box<dyn ItemHandle>
  613            },
  614        );
  615        self.build_project_item_for_path_fns
  616            .push(|project, project_path, window, cx| {
  617                let project_path = project_path.clone();
  618                let is_file = project
  619                    .read(cx)
  620                    .entry_for_path(&project_path, cx)
  621                    .is_some_and(|entry| entry.is_file());
  622                let entry_abs_path = project.read(cx).absolute_path(&project_path, cx);
  623                let is_local = project.read(cx).is_local();
  624                let project_item =
  625                    <T::Item as project::ProjectItem>::try_open(project, &project_path, cx)?;
  626                let project = project.clone();
  627                Some(window.spawn(cx, async move |cx| {
  628                    match project_item.await.with_context(|| {
  629                        format!(
  630                            "opening project path {:?}",
  631                            entry_abs_path.as_deref().unwrap_or(&project_path.path)
  632                        )
  633                    }) {
  634                        Ok(project_item) => {
  635                            let project_item = project_item;
  636                            let project_entry_id: Option<ProjectEntryId> =
  637                                project_item.read_with(cx, project::ProjectItem::entry_id)?;
  638                            let build_workspace_item = Box::new(
  639                                |pane: &mut Pane, window: &mut Window, cx: &mut Context<Pane>| {
  640                                    Box::new(cx.new(|cx| {
  641                                        T::for_project_item(
  642                                            project,
  643                                            Some(pane),
  644                                            project_item,
  645                                            window,
  646                                            cx,
  647                                        )
  648                                    })) as Box<dyn ItemHandle>
  649                                },
  650                            ) as Box<_>;
  651                            Ok((project_entry_id, build_workspace_item))
  652                        }
  653                        Err(e) => {
  654                            if e.error_code() == ErrorCode::Internal {
  655                                if let Some(abs_path) =
  656                                    entry_abs_path.as_deref().filter(|_| is_file)
  657                                {
  658                                    if let Some(broken_project_item_view) =
  659                                        cx.update(|window, cx| {
  660                                            T::for_broken_project_item(
  661                                                abs_path, is_local, &e, window, cx,
  662                                            )
  663                                        })?
  664                                    {
  665                                        let build_workspace_item = Box::new(
  666                                            move |_: &mut Pane, _: &mut Window, cx: &mut Context<Pane>| {
  667                                                cx.new(|_| broken_project_item_view).boxed_clone()
  668                                            },
  669                                        )
  670                                        as Box<_>;
  671                                        return Ok((None, build_workspace_item));
  672                                    }
  673                                }
  674                            }
  675                            Err(e)
  676                        }
  677                    }
  678                }))
  679            });
  680    }
  681
  682    fn open_path(
  683        &self,
  684        project: &Entity<Project>,
  685        path: &ProjectPath,
  686        window: &mut Window,
  687        cx: &mut App,
  688    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
  689        let Some(open_project_item) = self
  690            .build_project_item_for_path_fns
  691            .iter()
  692            .rev()
  693            .find_map(|open_project_item| open_project_item(project, path, window, cx))
  694        else {
  695            return Task::ready(Err(anyhow!("cannot open file {:?}", path.path)));
  696        };
  697        open_project_item
  698    }
  699
  700    fn build_item<T: project::ProjectItem>(
  701        &self,
  702        item: Entity<T>,
  703        project: Entity<Project>,
  704        pane: Option<&Pane>,
  705        window: &mut Window,
  706        cx: &mut App,
  707    ) -> Option<Box<dyn ItemHandle>> {
  708        let build = self
  709            .build_project_item_fns_by_type
  710            .get(&TypeId::of::<T>())?;
  711        Some(build(item.into_any(), project, pane, window, cx))
  712    }
  713}
  714
  715type WorkspaceItemBuilder =
  716    Box<dyn FnOnce(&mut Pane, &mut Window, &mut Context<Pane>) -> Box<dyn ItemHandle>>;
  717
  718impl Global for ProjectItemRegistry {}
  719
  720/// Registers a [ProjectItem] for the app. When opening a file, all the registered
  721/// items will get a chance to open the file, starting from the project item that
  722/// was added last.
  723pub fn register_project_item<I: ProjectItem>(cx: &mut App) {
  724    cx.default_global::<ProjectItemRegistry>().register::<I>();
  725}
  726
  727#[derive(Default)]
  728pub struct FollowableViewRegistry(HashMap<TypeId, FollowableViewDescriptor>);
  729
  730struct FollowableViewDescriptor {
  731    from_state_proto: fn(
  732        Entity<Workspace>,
  733        ViewId,
  734        &mut Option<proto::view::Variant>,
  735        &mut Window,
  736        &mut App,
  737    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>>,
  738    to_followable_view: fn(&AnyView) -> Box<dyn FollowableItemHandle>,
  739}
  740
  741impl Global for FollowableViewRegistry {}
  742
  743impl FollowableViewRegistry {
  744    pub fn register<I: FollowableItem>(cx: &mut App) {
  745        cx.default_global::<Self>().0.insert(
  746            TypeId::of::<I>(),
  747            FollowableViewDescriptor {
  748                from_state_proto: |workspace, id, state, window, cx| {
  749                    I::from_state_proto(workspace, id, state, window, cx).map(|task| {
  750                        cx.foreground_executor()
  751                            .spawn(async move { Ok(Box::new(task.await?) as Box<_>) })
  752                    })
  753                },
  754                to_followable_view: |view| Box::new(view.clone().downcast::<I>().unwrap()),
  755            },
  756        );
  757    }
  758
  759    pub fn from_state_proto(
  760        workspace: Entity<Workspace>,
  761        view_id: ViewId,
  762        mut state: Option<proto::view::Variant>,
  763        window: &mut Window,
  764        cx: &mut App,
  765    ) -> Option<Task<Result<Box<dyn FollowableItemHandle>>>> {
  766        cx.update_default_global(|this: &mut Self, cx| {
  767            this.0.values().find_map(|descriptor| {
  768                (descriptor.from_state_proto)(workspace.clone(), view_id, &mut state, window, cx)
  769            })
  770        })
  771    }
  772
  773    pub fn to_followable_view(
  774        view: impl Into<AnyView>,
  775        cx: &App,
  776    ) -> Option<Box<dyn FollowableItemHandle>> {
  777        let this = cx.try_global::<Self>()?;
  778        let view = view.into();
  779        let descriptor = this.0.get(&view.entity_type())?;
  780        Some((descriptor.to_followable_view)(&view))
  781    }
  782}
  783
  784#[derive(Copy, Clone)]
  785struct SerializableItemDescriptor {
  786    deserialize: fn(
  787        Entity<Project>,
  788        WeakEntity<Workspace>,
  789        WorkspaceId,
  790        ItemId,
  791        &mut Window,
  792        &mut Context<Pane>,
  793    ) -> Task<Result<Box<dyn ItemHandle>>>,
  794    cleanup: fn(WorkspaceId, Vec<ItemId>, &mut Window, &mut App) -> Task<Result<()>>,
  795    view_to_serializable_item: fn(AnyView) -> Box<dyn SerializableItemHandle>,
  796}
  797
  798#[derive(Default)]
  799struct SerializableItemRegistry {
  800    descriptors_by_kind: HashMap<Arc<str>, SerializableItemDescriptor>,
  801    descriptors_by_type: HashMap<TypeId, SerializableItemDescriptor>,
  802}
  803
  804impl Global for SerializableItemRegistry {}
  805
  806impl SerializableItemRegistry {
  807    fn deserialize(
  808        item_kind: &str,
  809        project: Entity<Project>,
  810        workspace: WeakEntity<Workspace>,
  811        workspace_id: WorkspaceId,
  812        item_item: ItemId,
  813        window: &mut Window,
  814        cx: &mut Context<Pane>,
  815    ) -> Task<Result<Box<dyn ItemHandle>>> {
  816        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  817            return Task::ready(Err(anyhow!(
  818                "cannot deserialize {}, descriptor not found",
  819                item_kind
  820            )));
  821        };
  822
  823        (descriptor.deserialize)(project, workspace, workspace_id, item_item, window, cx)
  824    }
  825
  826    fn cleanup(
  827        item_kind: &str,
  828        workspace_id: WorkspaceId,
  829        loaded_items: Vec<ItemId>,
  830        window: &mut Window,
  831        cx: &mut App,
  832    ) -> Task<Result<()>> {
  833        let Some(descriptor) = Self::descriptor(item_kind, cx) else {
  834            return Task::ready(Err(anyhow!(
  835                "cannot cleanup {}, descriptor not found",
  836                item_kind
  837            )));
  838        };
  839
  840        (descriptor.cleanup)(workspace_id, loaded_items, window, cx)
  841    }
  842
  843    fn view_to_serializable_item_handle(
  844        view: AnyView,
  845        cx: &App,
  846    ) -> Option<Box<dyn SerializableItemHandle>> {
  847        let this = cx.try_global::<Self>()?;
  848        let descriptor = this.descriptors_by_type.get(&view.entity_type())?;
  849        Some((descriptor.view_to_serializable_item)(view))
  850    }
  851
  852    fn descriptor(item_kind: &str, cx: &App) -> Option<SerializableItemDescriptor> {
  853        let this = cx.try_global::<Self>()?;
  854        this.descriptors_by_kind.get(item_kind).copied()
  855    }
  856}
  857
  858pub fn register_serializable_item<I: SerializableItem>(cx: &mut App) {
  859    let serialized_item_kind = I::serialized_item_kind();
  860
  861    let registry = cx.default_global::<SerializableItemRegistry>();
  862    let descriptor = SerializableItemDescriptor {
  863        deserialize: |project, workspace, workspace_id, item_id, window, cx| {
  864            let task = I::deserialize(project, workspace, workspace_id, item_id, window, cx);
  865            cx.foreground_executor()
  866                .spawn(async { Ok(Box::new(task.await?) as Box<_>) })
  867        },
  868        cleanup: |workspace_id, loaded_items, window, cx| {
  869            I::cleanup(workspace_id, loaded_items, window, cx)
  870        },
  871        view_to_serializable_item: |view| Box::new(view.downcast::<I>().unwrap()),
  872    };
  873    registry
  874        .descriptors_by_kind
  875        .insert(Arc::from(serialized_item_kind), descriptor);
  876    registry
  877        .descriptors_by_type
  878        .insert(TypeId::of::<I>(), descriptor);
  879}
  880
  881pub struct AppState {
  882    pub languages: Arc<LanguageRegistry>,
  883    pub client: Arc<Client>,
  884    pub user_store: Entity<UserStore>,
  885    pub workspace_store: Entity<WorkspaceStore>,
  886    pub fs: Arc<dyn fs::Fs>,
  887    pub build_window_options: fn(Option<Uuid>, &mut App) -> WindowOptions,
  888    pub node_runtime: NodeRuntime,
  889    pub session: Entity<AppSession>,
  890}
  891
  892struct GlobalAppState(Weak<AppState>);
  893
  894impl Global for GlobalAppState {}
  895
  896pub struct WorkspaceStore {
  897    workspaces: HashSet<WindowHandle<Workspace>>,
  898    client: Arc<Client>,
  899    _subscriptions: Vec<client::Subscription>,
  900}
  901
  902#[derive(Copy, Clone, Debug, Hash, Eq, PartialEq, PartialOrd, Ord)]
  903pub enum CollaboratorId {
  904    PeerId(PeerId),
  905    Agent,
  906}
  907
  908impl From<PeerId> for CollaboratorId {
  909    fn from(peer_id: PeerId) -> Self {
  910        CollaboratorId::PeerId(peer_id)
  911    }
  912}
  913
  914impl From<&PeerId> for CollaboratorId {
  915    fn from(peer_id: &PeerId) -> Self {
  916        CollaboratorId::PeerId(*peer_id)
  917    }
  918}
  919
  920#[derive(PartialEq, Eq, PartialOrd, Ord, Debug)]
  921struct Follower {
  922    project_id: Option<u64>,
  923    peer_id: PeerId,
  924}
  925
  926impl AppState {
  927    #[track_caller]
  928    pub fn global(cx: &App) -> Weak<Self> {
  929        cx.global::<GlobalAppState>().0.clone()
  930    }
  931    pub fn try_global(cx: &App) -> Option<Weak<Self>> {
  932        cx.try_global::<GlobalAppState>()
  933            .map(|state| state.0.clone())
  934    }
  935    pub fn set_global(state: Weak<AppState>, cx: &mut App) {
  936        cx.set_global(GlobalAppState(state));
  937    }
  938
  939    #[cfg(any(test, feature = "test-support"))]
  940    pub fn test(cx: &mut App) -> Arc<Self> {
  941        use node_runtime::NodeRuntime;
  942        use session::Session;
  943        use settings::SettingsStore;
  944
  945        if !cx.has_global::<SettingsStore>() {
  946            let settings_store = SettingsStore::test(cx);
  947            cx.set_global(settings_store);
  948        }
  949
  950        let fs = fs::FakeFs::new(cx.background_executor().clone());
  951        let languages = Arc::new(LanguageRegistry::test(cx.background_executor().clone()));
  952        let clock = Arc::new(clock::FakeSystemClock::new());
  953        let http_client = http_client::FakeHttpClient::with_404_response();
  954        let client = Client::new(clock, http_client, cx);
  955        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
  956        let user_store = cx.new(|cx| UserStore::new(client.clone(), cx));
  957        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
  958
  959        theme::init(theme::LoadThemes::JustBase, cx);
  960        client::init(&client, cx);
  961        crate::init_settings(cx);
  962
  963        Arc::new(Self {
  964            client,
  965            fs,
  966            languages,
  967            user_store,
  968            workspace_store,
  969            node_runtime: NodeRuntime::unavailable(),
  970            build_window_options: |_, _| Default::default(),
  971            session,
  972        })
  973    }
  974}
  975
  976struct DelayedDebouncedEditAction {
  977    task: Option<Task<()>>,
  978    cancel_channel: Option<oneshot::Sender<()>>,
  979}
  980
  981impl DelayedDebouncedEditAction {
  982    fn new() -> DelayedDebouncedEditAction {
  983        DelayedDebouncedEditAction {
  984            task: None,
  985            cancel_channel: None,
  986        }
  987    }
  988
  989    fn fire_new<F>(
  990        &mut self,
  991        delay: Duration,
  992        window: &mut Window,
  993        cx: &mut Context<Workspace>,
  994        func: F,
  995    ) where
  996        F: 'static
  997            + Send
  998            + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> Task<Result<()>>,
  999    {
 1000        if let Some(channel) = self.cancel_channel.take() {
 1001            _ = channel.send(());
 1002        }
 1003
 1004        let (sender, mut receiver) = oneshot::channel::<()>();
 1005        self.cancel_channel = Some(sender);
 1006
 1007        let previous_task = self.task.take();
 1008        self.task = Some(cx.spawn_in(window, async move |workspace, cx| {
 1009            let mut timer = cx.background_executor().timer(delay).fuse();
 1010            if let Some(previous_task) = previous_task {
 1011                previous_task.await;
 1012            }
 1013
 1014            futures::select_biased! {
 1015                _ = receiver => return,
 1016                    _ = timer => {}
 1017            }
 1018
 1019            if let Some(result) = workspace
 1020                .update_in(cx, |workspace, window, cx| (func)(workspace, window, cx))
 1021                .log_err()
 1022            {
 1023                result.await.log_err();
 1024            }
 1025        }));
 1026    }
 1027}
 1028
 1029pub enum Event {
 1030    PaneAdded(Entity<Pane>),
 1031    PaneRemoved,
 1032    ItemAdded {
 1033        item: Box<dyn ItemHandle>,
 1034    },
 1035    ActiveItemChanged,
 1036    ItemRemoved {
 1037        item_id: EntityId,
 1038    },
 1039    UserSavedItem {
 1040        pane: WeakEntity<Pane>,
 1041        item: Box<dyn WeakItemHandle>,
 1042        save_intent: SaveIntent,
 1043    },
 1044    ContactRequestedJoin(u64),
 1045    WorkspaceCreated(WeakEntity<Workspace>),
 1046    OpenBundledFile {
 1047        text: Cow<'static, str>,
 1048        title: &'static str,
 1049        language: &'static str,
 1050    },
 1051    ZoomChanged,
 1052    ModalOpened,
 1053}
 1054
 1055#[derive(Debug)]
 1056pub enum OpenVisible {
 1057    All,
 1058    None,
 1059    OnlyFiles,
 1060    OnlyDirectories,
 1061}
 1062
 1063enum WorkspaceLocation {
 1064    // Valid local paths or SSH project to serialize
 1065    Location(SerializedWorkspaceLocation, PathList),
 1066    // No valid location found hence clear session id
 1067    DetachFromSession,
 1068    // No valid location found to serialize
 1069    None,
 1070}
 1071
 1072type PromptForNewPath = Box<
 1073    dyn Fn(
 1074        &mut Workspace,
 1075        DirectoryLister,
 1076        &mut Window,
 1077        &mut Context<Workspace>,
 1078    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1079>;
 1080
 1081type PromptForOpenPath = Box<
 1082    dyn Fn(
 1083        &mut Workspace,
 1084        DirectoryLister,
 1085        &mut Window,
 1086        &mut Context<Workspace>,
 1087    ) -> oneshot::Receiver<Option<Vec<PathBuf>>>,
 1088>;
 1089
 1090#[derive(Default)]
 1091struct DispatchingKeystrokes {
 1092    dispatched: HashSet<Vec<Keystroke>>,
 1093    queue: VecDeque<Keystroke>,
 1094    task: Option<Shared<Task<()>>>,
 1095}
 1096
 1097/// Collects everything project-related for a certain window opened.
 1098/// In some way, is a counterpart of a window, as the [`WindowHandle`] could be downcast into `Workspace`.
 1099///
 1100/// A `Workspace` usually consists of 1 or more projects, a central pane group, 3 docks and a status bar.
 1101/// The `Workspace` owns everybody's state and serves as a default, "global context",
 1102/// that can be used to register a global action to be triggered from any place in the window.
 1103pub struct Workspace {
 1104    weak_self: WeakEntity<Self>,
 1105    workspace_actions: Vec<Box<dyn Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div>>,
 1106    zoomed: Option<AnyWeakView>,
 1107    previous_dock_drag_coordinates: Option<Point<Pixels>>,
 1108    zoomed_position: Option<DockPosition>,
 1109    center: PaneGroup,
 1110    left_dock: Entity<Dock>,
 1111    bottom_dock: Entity<Dock>,
 1112    right_dock: Entity<Dock>,
 1113    panes: Vec<Entity<Pane>>,
 1114    panes_by_item: HashMap<EntityId, WeakEntity<Pane>>,
 1115    active_pane: Entity<Pane>,
 1116    last_active_center_pane: Option<WeakEntity<Pane>>,
 1117    last_active_view_id: Option<proto::ViewId>,
 1118    status_bar: Entity<StatusBar>,
 1119    modal_layer: Entity<ModalLayer>,
 1120    toast_layer: Entity<ToastLayer>,
 1121    titlebar_item: Option<AnyView>,
 1122    notifications: Notifications,
 1123    suppressed_notifications: HashSet<NotificationId>,
 1124    project: Entity<Project>,
 1125    follower_states: HashMap<CollaboratorId, FollowerState>,
 1126    last_leaders_by_pane: HashMap<WeakEntity<Pane>, CollaboratorId>,
 1127    window_edited: bool,
 1128    last_window_title: Option<String>,
 1129    dirty_items: HashMap<EntityId, Subscription>,
 1130    active_call: Option<(Entity<ActiveCall>, Vec<Subscription>)>,
 1131    leader_updates_tx: mpsc::UnboundedSender<(PeerId, proto::UpdateFollowers)>,
 1132    database_id: Option<WorkspaceId>,
 1133    app_state: Arc<AppState>,
 1134    dispatching_keystrokes: Rc<RefCell<DispatchingKeystrokes>>,
 1135    _subscriptions: Vec<Subscription>,
 1136    _apply_leader_updates: Task<Result<()>>,
 1137    _observe_current_user: Task<Result<()>>,
 1138    _schedule_serialize_workspace: Option<Task<()>>,
 1139    _schedule_serialize_ssh_paths: Option<Task<()>>,
 1140    pane_history_timestamp: Arc<AtomicUsize>,
 1141    bounds: Bounds<Pixels>,
 1142    pub centered_layout: bool,
 1143    bounds_save_task_queued: Option<Task<()>>,
 1144    on_prompt_for_new_path: Option<PromptForNewPath>,
 1145    on_prompt_for_open_path: Option<PromptForOpenPath>,
 1146    terminal_provider: Option<Box<dyn TerminalProvider>>,
 1147    debugger_provider: Option<Arc<dyn DebuggerProvider>>,
 1148    serializable_items_tx: UnboundedSender<Box<dyn SerializableItemHandle>>,
 1149    _items_serializer: Task<Result<()>>,
 1150    session_id: Option<String>,
 1151    scheduled_tasks: Vec<Task<()>>,
 1152}
 1153
 1154impl EventEmitter<Event> for Workspace {}
 1155
 1156#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
 1157pub struct ViewId {
 1158    pub creator: CollaboratorId,
 1159    pub id: u64,
 1160}
 1161
 1162pub struct FollowerState {
 1163    center_pane: Entity<Pane>,
 1164    dock_pane: Option<Entity<Pane>>,
 1165    active_view_id: Option<ViewId>,
 1166    items_by_leader_view_id: HashMap<ViewId, FollowerView>,
 1167}
 1168
 1169struct FollowerView {
 1170    view: Box<dyn FollowableItemHandle>,
 1171    location: Option<proto::PanelId>,
 1172}
 1173
 1174impl Workspace {
 1175    const DEFAULT_PADDING: f32 = 0.2;
 1176    const MAX_PADDING: f32 = 0.4;
 1177
 1178    pub fn new(
 1179        workspace_id: Option<WorkspaceId>,
 1180        project: Entity<Project>,
 1181        app_state: Arc<AppState>,
 1182        window: &mut Window,
 1183        cx: &mut Context<Self>,
 1184    ) -> Self {
 1185        cx.subscribe_in(&project, window, move |this, _, event, window, cx| {
 1186            match event {
 1187                project::Event::RemoteIdChanged(_) => {
 1188                    this.update_window_title(window, cx);
 1189                }
 1190
 1191                project::Event::CollaboratorLeft(peer_id) => {
 1192                    this.collaborator_left(*peer_id, window, cx);
 1193                }
 1194
 1195                project::Event::WorktreeRemoved(_) | project::Event::WorktreeAdded(_) => {
 1196                    this.update_window_title(window, cx);
 1197                    this.serialize_workspace(window, cx);
 1198                    // This event could be triggered by `AddFolderToProject` or `RemoveFromProject`.
 1199                    this.update_history(cx);
 1200                }
 1201
 1202                project::Event::DisconnectedFromHost => {
 1203                    this.update_window_edited(window, cx);
 1204                    let leaders_to_unfollow =
 1205                        this.follower_states.keys().copied().collect::<Vec<_>>();
 1206                    for leader_id in leaders_to_unfollow {
 1207                        this.unfollow(leader_id, window, cx);
 1208                    }
 1209                }
 1210
 1211                project::Event::DisconnectedFromSshRemote => {
 1212                    this.update_window_edited(window, cx);
 1213                }
 1214
 1215                project::Event::Closed => {
 1216                    window.remove_window();
 1217                }
 1218
 1219                project::Event::DeletedEntry(_, entry_id) => {
 1220                    for pane in this.panes.iter() {
 1221                        pane.update(cx, |pane, cx| {
 1222                            pane.handle_deleted_project_item(*entry_id, window, cx)
 1223                        });
 1224                    }
 1225                }
 1226
 1227                project::Event::Toast {
 1228                    notification_id,
 1229                    message,
 1230                } => this.show_notification(
 1231                    NotificationId::named(notification_id.clone()),
 1232                    cx,
 1233                    |cx| cx.new(|cx| MessageNotification::new(message.clone(), cx)),
 1234                ),
 1235
 1236                project::Event::HideToast { notification_id } => {
 1237                    this.dismiss_notification(&NotificationId::named(notification_id.clone()), cx)
 1238                }
 1239
 1240                project::Event::LanguageServerPrompt(request) => {
 1241                    struct LanguageServerPrompt;
 1242
 1243                    let mut hasher = DefaultHasher::new();
 1244                    request.lsp_name.as_str().hash(&mut hasher);
 1245                    let id = hasher.finish();
 1246
 1247                    this.show_notification(
 1248                        NotificationId::composite::<LanguageServerPrompt>(id as usize),
 1249                        cx,
 1250                        |cx| {
 1251                            cx.new(|cx| {
 1252                                notifications::LanguageServerPrompt::new(request.clone(), cx)
 1253                            })
 1254                        },
 1255                    );
 1256                }
 1257
 1258                project::Event::AgentLocationChanged => {
 1259                    this.handle_agent_location_changed(window, cx)
 1260                }
 1261
 1262                _ => {}
 1263            }
 1264            cx.notify()
 1265        })
 1266        .detach();
 1267
 1268        cx.subscribe_in(
 1269            &project.read(cx).breakpoint_store(),
 1270            window,
 1271            |workspace, _, event, window, cx| match event {
 1272                BreakpointStoreEvent::BreakpointsUpdated(_, _)
 1273                | BreakpointStoreEvent::BreakpointsCleared(_) => {
 1274                    workspace.serialize_workspace(window, cx);
 1275                }
 1276                BreakpointStoreEvent::SetDebugLine | BreakpointStoreEvent::ClearDebugLines => {}
 1277            },
 1278        )
 1279        .detach();
 1280        if let Some(toolchain_store) = project.read(cx).toolchain_store() {
 1281            cx.subscribe_in(
 1282                &toolchain_store,
 1283                window,
 1284                |workspace, _, event, window, cx| match event {
 1285                    ToolchainStoreEvent::CustomToolchainsModified => {
 1286                        workspace.serialize_workspace(window, cx);
 1287                    }
 1288                    _ => {}
 1289                },
 1290            )
 1291            .detach();
 1292        }
 1293
 1294        cx.on_focus_lost(window, |this, window, cx| {
 1295            let focus_handle = this.focus_handle(cx);
 1296            window.focus(&focus_handle);
 1297        })
 1298        .detach();
 1299
 1300        let weak_handle = cx.entity().downgrade();
 1301        let pane_history_timestamp = Arc::new(AtomicUsize::new(0));
 1302
 1303        let center_pane = cx.new(|cx| {
 1304            let mut center_pane = Pane::new(
 1305                weak_handle.clone(),
 1306                project.clone(),
 1307                pane_history_timestamp.clone(),
 1308                None,
 1309                NewFile.boxed_clone(),
 1310                window,
 1311                cx,
 1312            );
 1313            center_pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 1314            center_pane
 1315        });
 1316        cx.subscribe_in(&center_pane, window, Self::handle_pane_event)
 1317            .detach();
 1318
 1319        window.focus(&center_pane.focus_handle(cx));
 1320
 1321        cx.emit(Event::PaneAdded(center_pane.clone()));
 1322
 1323        let window_handle = window.window_handle().downcast::<Workspace>().unwrap();
 1324        app_state.workspace_store.update(cx, |store, _| {
 1325            store.workspaces.insert(window_handle);
 1326        });
 1327
 1328        let mut current_user = app_state.user_store.read(cx).watch_current_user();
 1329        let mut connection_status = app_state.client.status();
 1330        let _observe_current_user = cx.spawn_in(window, async move |this, cx| {
 1331            current_user.next().await;
 1332            connection_status.next().await;
 1333            let mut stream =
 1334                Stream::map(current_user, drop).merge(Stream::map(connection_status, drop));
 1335
 1336            while stream.recv().await.is_some() {
 1337                this.update(cx, |_, cx| cx.notify())?;
 1338            }
 1339            anyhow::Ok(())
 1340        });
 1341
 1342        // All leader updates are enqueued and then processed in a single task, so
 1343        // that each asynchronous operation can be run in order.
 1344        let (leader_updates_tx, mut leader_updates_rx) =
 1345            mpsc::unbounded::<(PeerId, proto::UpdateFollowers)>();
 1346        let _apply_leader_updates = cx.spawn_in(window, async move |this, cx| {
 1347            while let Some((leader_id, update)) = leader_updates_rx.next().await {
 1348                Self::process_leader_update(&this, leader_id, update, cx)
 1349                    .await
 1350                    .log_err();
 1351            }
 1352
 1353            Ok(())
 1354        });
 1355
 1356        cx.emit(Event::WorkspaceCreated(weak_handle.clone()));
 1357        let modal_layer = cx.new(|_| ModalLayer::new());
 1358        let toast_layer = cx.new(|_| ToastLayer::new());
 1359        cx.subscribe(
 1360            &modal_layer,
 1361            |_, _, _: &modal_layer::ModalOpenedEvent, cx| {
 1362                cx.emit(Event::ModalOpened);
 1363            },
 1364        )
 1365        .detach();
 1366
 1367        let left_dock = Dock::new(DockPosition::Left, modal_layer.clone(), window, cx);
 1368        let bottom_dock = Dock::new(DockPosition::Bottom, modal_layer.clone(), window, cx);
 1369        let right_dock = Dock::new(DockPosition::Right, modal_layer.clone(), window, cx);
 1370        let left_dock_buttons = cx.new(|cx| PanelButtons::new(left_dock.clone(), cx));
 1371        let bottom_dock_buttons = cx.new(|cx| PanelButtons::new(bottom_dock.clone(), cx));
 1372        let right_dock_buttons = cx.new(|cx| PanelButtons::new(right_dock.clone(), cx));
 1373        let status_bar = cx.new(|cx| {
 1374            let mut status_bar = StatusBar::new(&center_pane.clone(), window, cx);
 1375            status_bar.add_left_item(left_dock_buttons, window, cx);
 1376            status_bar.add_right_item(right_dock_buttons, window, cx);
 1377            status_bar.add_right_item(bottom_dock_buttons, window, cx);
 1378            status_bar
 1379        });
 1380
 1381        let session_id = app_state.session.read(cx).id().to_owned();
 1382
 1383        let mut active_call = None;
 1384        if let Some(call) = ActiveCall::try_global(cx) {
 1385            let subscriptions = vec![cx.subscribe_in(&call, window, Self::on_active_call_event)];
 1386            active_call = Some((call, subscriptions));
 1387        }
 1388
 1389        let (serializable_items_tx, serializable_items_rx) =
 1390            mpsc::unbounded::<Box<dyn SerializableItemHandle>>();
 1391        let _items_serializer = cx.spawn_in(window, async move |this, cx| {
 1392            Self::serialize_items(&this, serializable_items_rx, cx).await
 1393        });
 1394
 1395        let subscriptions = vec![
 1396            cx.observe_window_activation(window, Self::on_window_activation_changed),
 1397            cx.observe_window_bounds(window, move |this, window, cx| {
 1398                if this.bounds_save_task_queued.is_some() {
 1399                    return;
 1400                }
 1401                this.bounds_save_task_queued = Some(cx.spawn_in(window, async move |this, cx| {
 1402                    cx.background_executor()
 1403                        .timer(Duration::from_millis(100))
 1404                        .await;
 1405                    this.update_in(cx, |this, window, cx| {
 1406                        if let Some(display) = window.display(cx)
 1407                            && let Ok(display_uuid) = display.uuid()
 1408                        {
 1409                            let window_bounds = window.inner_window_bounds();
 1410                            if let Some(database_id) = workspace_id {
 1411                                cx.background_executor()
 1412                                    .spawn(DB.set_window_open_status(
 1413                                        database_id,
 1414                                        SerializedWindowBounds(window_bounds),
 1415                                        display_uuid,
 1416                                    ))
 1417                                    .detach_and_log_err(cx);
 1418                            }
 1419                        }
 1420                        this.bounds_save_task_queued.take();
 1421                    })
 1422                    .ok();
 1423                }));
 1424                cx.notify();
 1425            }),
 1426            cx.observe_window_appearance(window, |_, window, cx| {
 1427                let window_appearance = window.appearance();
 1428
 1429                *SystemAppearance::global_mut(cx) = SystemAppearance(window_appearance.into());
 1430
 1431                ThemeSettings::reload_current_theme(cx);
 1432                ThemeSettings::reload_current_icon_theme(cx);
 1433            }),
 1434            cx.on_release(move |this, cx| {
 1435                this.app_state.workspace_store.update(cx, move |store, _| {
 1436                    store.workspaces.remove(&window_handle.clone());
 1437                })
 1438            }),
 1439        ];
 1440
 1441        cx.defer_in(window, |this, window, cx| {
 1442            this.update_window_title(window, cx);
 1443            this.show_initial_notifications(cx);
 1444        });
 1445        Workspace {
 1446            weak_self: weak_handle.clone(),
 1447            zoomed: None,
 1448            zoomed_position: None,
 1449            previous_dock_drag_coordinates: None,
 1450            center: PaneGroup::new(center_pane.clone()),
 1451            panes: vec![center_pane.clone()],
 1452            panes_by_item: Default::default(),
 1453            active_pane: center_pane.clone(),
 1454            last_active_center_pane: Some(center_pane.downgrade()),
 1455            last_active_view_id: None,
 1456            status_bar,
 1457            modal_layer,
 1458            toast_layer,
 1459            titlebar_item: None,
 1460            notifications: Notifications::default(),
 1461            suppressed_notifications: HashSet::default(),
 1462            left_dock,
 1463            bottom_dock,
 1464            right_dock,
 1465            project: project.clone(),
 1466            follower_states: Default::default(),
 1467            last_leaders_by_pane: Default::default(),
 1468            dispatching_keystrokes: Default::default(),
 1469            window_edited: false,
 1470            last_window_title: None,
 1471            dirty_items: Default::default(),
 1472            active_call,
 1473            database_id: workspace_id,
 1474            app_state,
 1475            _observe_current_user,
 1476            _apply_leader_updates,
 1477            _schedule_serialize_workspace: None,
 1478            _schedule_serialize_ssh_paths: None,
 1479            leader_updates_tx,
 1480            _subscriptions: subscriptions,
 1481            pane_history_timestamp,
 1482            workspace_actions: Default::default(),
 1483            // This data will be incorrect, but it will be overwritten by the time it needs to be used.
 1484            bounds: Default::default(),
 1485            centered_layout: false,
 1486            bounds_save_task_queued: None,
 1487            on_prompt_for_new_path: None,
 1488            on_prompt_for_open_path: None,
 1489            terminal_provider: None,
 1490            debugger_provider: None,
 1491            serializable_items_tx,
 1492            _items_serializer,
 1493            session_id: Some(session_id),
 1494
 1495            scheduled_tasks: Vec::new(),
 1496        }
 1497    }
 1498
 1499    pub fn new_local(
 1500        abs_paths: Vec<PathBuf>,
 1501        app_state: Arc<AppState>,
 1502        requesting_window: Option<WindowHandle<Workspace>>,
 1503        env: Option<HashMap<String, String>>,
 1504        cx: &mut App,
 1505    ) -> Task<
 1506        anyhow::Result<(
 1507            WindowHandle<Workspace>,
 1508            Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 1509        )>,
 1510    > {
 1511        let project_handle = Project::local(
 1512            app_state.client.clone(),
 1513            app_state.node_runtime.clone(),
 1514            app_state.user_store.clone(),
 1515            app_state.languages.clone(),
 1516            app_state.fs.clone(),
 1517            env,
 1518            cx,
 1519        );
 1520
 1521        cx.spawn(async move |cx| {
 1522            let mut paths_to_open = Vec::with_capacity(abs_paths.len());
 1523            for path in abs_paths.into_iter() {
 1524                if let Some(canonical) = app_state.fs.canonicalize(&path).await.ok() {
 1525                    paths_to_open.push(canonical)
 1526                } else {
 1527                    paths_to_open.push(path)
 1528                }
 1529            }
 1530
 1531            let serialized_workspace =
 1532                persistence::DB.workspace_for_roots(paths_to_open.as_slice());
 1533
 1534            if let Some(paths) = serialized_workspace.as_ref().map(|ws| &ws.paths) {
 1535                paths_to_open = paths.paths().to_vec();
 1536                if !paths.is_lexicographically_ordered() {
 1537                    project_handle
 1538                        .update(cx, |project, cx| {
 1539                            project.set_worktrees_reordered(true, cx);
 1540                        })
 1541                        .log_err();
 1542                }
 1543            }
 1544
 1545            // Get project paths for all of the abs_paths
 1546            let mut project_paths: Vec<(PathBuf, Option<ProjectPath>)> =
 1547                Vec::with_capacity(paths_to_open.len());
 1548
 1549            for path in paths_to_open.into_iter() {
 1550                if let Some((_, project_entry)) = cx
 1551                    .update(|cx| {
 1552                        Workspace::project_path_for_path(project_handle.clone(), &path, true, cx)
 1553                    })?
 1554                    .await
 1555                    .log_err()
 1556                {
 1557                    project_paths.push((path, Some(project_entry)));
 1558                } else {
 1559                    project_paths.push((path, None));
 1560                }
 1561            }
 1562
 1563            let workspace_id = if let Some(serialized_workspace) = serialized_workspace.as_ref() {
 1564                serialized_workspace.id
 1565            } else {
 1566                DB.next_id().await.unwrap_or_else(|_| Default::default())
 1567            };
 1568
 1569            let toolchains = DB.toolchains(workspace_id).await?;
 1570
 1571            for (toolchain, worktree_id, path) in toolchains {
 1572                let toolchain_path = PathBuf::from(toolchain.path.clone().to_string());
 1573                if !app_state.fs.is_file(toolchain_path.as_path()).await {
 1574                    continue;
 1575                }
 1576
 1577                project_handle
 1578                    .update(cx, |this, cx| {
 1579                        this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 1580                    })?
 1581                    .await;
 1582            }
 1583            if let Some(workspace) = serialized_workspace.as_ref() {
 1584                project_handle.update(cx, |this, cx| {
 1585                    for (scope, toolchains) in &workspace.user_toolchains {
 1586                        for toolchain in toolchains {
 1587                            this.add_toolchain(toolchain.clone(), scope.clone(), cx);
 1588                        }
 1589                    }
 1590                })?;
 1591            }
 1592
 1593            let window = if let Some(window) = requesting_window {
 1594                let centered_layout = serialized_workspace
 1595                    .as_ref()
 1596                    .map(|w| w.centered_layout)
 1597                    .unwrap_or(false);
 1598
 1599                cx.update_window(window.into(), |_, window, cx| {
 1600                    window.replace_root(cx, |window, cx| {
 1601                        let mut workspace = Workspace::new(
 1602                            Some(workspace_id),
 1603                            project_handle.clone(),
 1604                            app_state.clone(),
 1605                            window,
 1606                            cx,
 1607                        );
 1608
 1609                        workspace.centered_layout = centered_layout;
 1610                        workspace
 1611                    });
 1612                })?;
 1613                window
 1614            } else {
 1615                let window_bounds_override = window_bounds_env_override();
 1616
 1617                let (window_bounds, display) = if let Some(bounds) = window_bounds_override {
 1618                    (Some(WindowBounds::Windowed(bounds)), None)
 1619                } else {
 1620                    let restorable_bounds = serialized_workspace
 1621                        .as_ref()
 1622                        .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 1623                        .or_else(|| {
 1624                            let (display, window_bounds) = DB.last_window().log_err()?;
 1625                            Some((display?, window_bounds?))
 1626                        });
 1627
 1628                    if let Some((serialized_display, serialized_status)) = restorable_bounds {
 1629                        (Some(serialized_status.0), Some(serialized_display))
 1630                    } else {
 1631                        (None, None)
 1632                    }
 1633                };
 1634
 1635                // Use the serialized workspace to construct the new window
 1636                let mut options = cx.update(|cx| (app_state.build_window_options)(display, cx))?;
 1637                options.window_bounds = window_bounds;
 1638                let centered_layout = serialized_workspace
 1639                    .as_ref()
 1640                    .map(|w| w.centered_layout)
 1641                    .unwrap_or(false);
 1642                cx.open_window(options, {
 1643                    let app_state = app_state.clone();
 1644                    let project_handle = project_handle.clone();
 1645                    move |window, cx| {
 1646                        cx.new(|cx| {
 1647                            let mut workspace = Workspace::new(
 1648                                Some(workspace_id),
 1649                                project_handle,
 1650                                app_state,
 1651                                window,
 1652                                cx,
 1653                            );
 1654                            workspace.centered_layout = centered_layout;
 1655                            workspace
 1656                        })
 1657                    }
 1658                })?
 1659            };
 1660
 1661            notify_if_database_failed(window, cx);
 1662            let opened_items = window
 1663                .update(cx, |_workspace, window, cx| {
 1664                    open_items(serialized_workspace, project_paths, window, cx)
 1665                })?
 1666                .await
 1667                .unwrap_or_default();
 1668
 1669            window
 1670                .update(cx, |workspace, window, cx| {
 1671                    window.activate_window();
 1672                    workspace.update_history(cx);
 1673                })
 1674                .log_err();
 1675            Ok((window, opened_items))
 1676        })
 1677    }
 1678
 1679    pub fn weak_handle(&self) -> WeakEntity<Self> {
 1680        self.weak_self.clone()
 1681    }
 1682
 1683    pub fn left_dock(&self) -> &Entity<Dock> {
 1684        &self.left_dock
 1685    }
 1686
 1687    pub fn bottom_dock(&self) -> &Entity<Dock> {
 1688        &self.bottom_dock
 1689    }
 1690
 1691    pub fn set_bottom_dock_layout(
 1692        &mut self,
 1693        layout: BottomDockLayout,
 1694        window: &mut Window,
 1695        cx: &mut Context<Self>,
 1696    ) {
 1697        let fs = self.project().read(cx).fs();
 1698        settings::update_settings_file::<WorkspaceSettings>(fs.clone(), cx, move |content, _cx| {
 1699            content.bottom_dock_layout = Some(layout);
 1700        });
 1701
 1702        cx.notify();
 1703        self.serialize_workspace(window, cx);
 1704    }
 1705
 1706    pub fn right_dock(&self) -> &Entity<Dock> {
 1707        &self.right_dock
 1708    }
 1709
 1710    pub fn all_docks(&self) -> [&Entity<Dock>; 3] {
 1711        [&self.left_dock, &self.bottom_dock, &self.right_dock]
 1712    }
 1713
 1714    pub fn dock_at_position(&self, position: DockPosition) -> &Entity<Dock> {
 1715        match position {
 1716            DockPosition::Left => &self.left_dock,
 1717            DockPosition::Bottom => &self.bottom_dock,
 1718            DockPosition::Right => &self.right_dock,
 1719        }
 1720    }
 1721
 1722    pub fn is_edited(&self) -> bool {
 1723        self.window_edited
 1724    }
 1725
 1726    pub fn add_panel<T: Panel>(
 1727        &mut self,
 1728        panel: Entity<T>,
 1729        window: &mut Window,
 1730        cx: &mut Context<Self>,
 1731    ) {
 1732        let focus_handle = panel.panel_focus_handle(cx);
 1733        cx.on_focus_in(&focus_handle, window, Self::handle_panel_focused)
 1734            .detach();
 1735
 1736        let dock_position = panel.position(window, cx);
 1737        let dock = self.dock_at_position(dock_position);
 1738
 1739        dock.update(cx, |dock, cx| {
 1740            dock.add_panel(panel, self.weak_self.clone(), window, cx)
 1741        });
 1742    }
 1743
 1744    pub fn status_bar(&self) -> &Entity<StatusBar> {
 1745        &self.status_bar
 1746    }
 1747
 1748    pub fn app_state(&self) -> &Arc<AppState> {
 1749        &self.app_state
 1750    }
 1751
 1752    pub fn user_store(&self) -> &Entity<UserStore> {
 1753        &self.app_state.user_store
 1754    }
 1755
 1756    pub fn project(&self) -> &Entity<Project> {
 1757        &self.project
 1758    }
 1759
 1760    pub fn recently_activated_items(&self, cx: &App) -> HashMap<EntityId, usize> {
 1761        let mut history: HashMap<EntityId, usize> = HashMap::default();
 1762
 1763        for pane_handle in &self.panes {
 1764            let pane = pane_handle.read(cx);
 1765
 1766            for entry in pane.activation_history() {
 1767                history.insert(
 1768                    entry.entity_id,
 1769                    history
 1770                        .get(&entry.entity_id)
 1771                        .cloned()
 1772                        .unwrap_or(0)
 1773                        .max(entry.timestamp),
 1774                );
 1775            }
 1776        }
 1777
 1778        history
 1779    }
 1780
 1781    pub fn recent_active_item_by_type<T: 'static>(&self, cx: &App) -> Option<Entity<T>> {
 1782        let mut recent_item: Option<Entity<T>> = None;
 1783        let mut recent_timestamp = 0;
 1784        for pane_handle in &self.panes {
 1785            let pane = pane_handle.read(cx);
 1786            let item_map: HashMap<EntityId, &Box<dyn ItemHandle>> =
 1787                pane.items().map(|item| (item.item_id(), item)).collect();
 1788            for entry in pane.activation_history() {
 1789                if entry.timestamp > recent_timestamp
 1790                    && let Some(&item) = item_map.get(&entry.entity_id)
 1791                    && let Some(typed_item) = item.act_as::<T>(cx)
 1792                {
 1793                    recent_timestamp = entry.timestamp;
 1794                    recent_item = Some(typed_item);
 1795                }
 1796            }
 1797        }
 1798        recent_item
 1799    }
 1800
 1801    pub fn recent_navigation_history_iter(
 1802        &self,
 1803        cx: &App,
 1804    ) -> impl Iterator<Item = (ProjectPath, Option<PathBuf>)> {
 1805        let mut abs_paths_opened: HashMap<PathBuf, HashSet<ProjectPath>> = HashMap::default();
 1806        let mut history: HashMap<ProjectPath, (Option<PathBuf>, usize)> = HashMap::default();
 1807
 1808        for pane in &self.panes {
 1809            let pane = pane.read(cx);
 1810
 1811            pane.nav_history()
 1812                .for_each_entry(cx, |entry, (project_path, fs_path)| {
 1813                    if let Some(fs_path) = &fs_path {
 1814                        abs_paths_opened
 1815                            .entry(fs_path.clone())
 1816                            .or_default()
 1817                            .insert(project_path.clone());
 1818                    }
 1819                    let timestamp = entry.timestamp;
 1820                    match history.entry(project_path) {
 1821                        hash_map::Entry::Occupied(mut entry) => {
 1822                            let (_, old_timestamp) = entry.get();
 1823                            if &timestamp > old_timestamp {
 1824                                entry.insert((fs_path, timestamp));
 1825                            }
 1826                        }
 1827                        hash_map::Entry::Vacant(entry) => {
 1828                            entry.insert((fs_path, timestamp));
 1829                        }
 1830                    }
 1831                });
 1832
 1833            if let Some(item) = pane.active_item()
 1834                && let Some(project_path) = item.project_path(cx)
 1835            {
 1836                let fs_path = self.project.read(cx).absolute_path(&project_path, cx);
 1837
 1838                if let Some(fs_path) = &fs_path {
 1839                    abs_paths_opened
 1840                        .entry(fs_path.clone())
 1841                        .or_default()
 1842                        .insert(project_path.clone());
 1843                }
 1844
 1845                history.insert(project_path, (fs_path, std::usize::MAX));
 1846            }
 1847        }
 1848
 1849        history
 1850            .into_iter()
 1851            .sorted_by_key(|(_, (_, order))| *order)
 1852            .map(|(project_path, (fs_path, _))| (project_path, fs_path))
 1853            .rev()
 1854            .filter(move |(history_path, abs_path)| {
 1855                let latest_project_path_opened = abs_path
 1856                    .as_ref()
 1857                    .and_then(|abs_path| abs_paths_opened.get(abs_path))
 1858                    .and_then(|project_paths| {
 1859                        project_paths
 1860                            .iter()
 1861                            .max_by(|b1, b2| b1.worktree_id.cmp(&b2.worktree_id))
 1862                    });
 1863
 1864                latest_project_path_opened.is_none_or(|path| path == history_path)
 1865            })
 1866    }
 1867
 1868    pub fn recent_navigation_history(
 1869        &self,
 1870        limit: Option<usize>,
 1871        cx: &App,
 1872    ) -> Vec<(ProjectPath, Option<PathBuf>)> {
 1873        self.recent_navigation_history_iter(cx)
 1874            .take(limit.unwrap_or(usize::MAX))
 1875            .collect()
 1876    }
 1877
 1878    fn navigate_history(
 1879        &mut self,
 1880        pane: WeakEntity<Pane>,
 1881        mode: NavigationMode,
 1882        window: &mut Window,
 1883        cx: &mut Context<Workspace>,
 1884    ) -> Task<Result<()>> {
 1885        let to_load = if let Some(pane) = pane.upgrade() {
 1886            pane.update(cx, |pane, cx| {
 1887                window.focus(&pane.focus_handle(cx));
 1888                loop {
 1889                    // Retrieve the weak item handle from the history.
 1890                    let entry = pane.nav_history_mut().pop(mode, cx)?;
 1891
 1892                    // If the item is still present in this pane, then activate it.
 1893                    if let Some(index) = entry
 1894                        .item
 1895                        .upgrade()
 1896                        .and_then(|v| pane.index_for_item(v.as_ref()))
 1897                    {
 1898                        let prev_active_item_index = pane.active_item_index();
 1899                        pane.nav_history_mut().set_mode(mode);
 1900                        pane.activate_item(index, true, true, window, cx);
 1901                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1902
 1903                        let mut navigated = prev_active_item_index != pane.active_item_index();
 1904                        if let Some(data) = entry.data {
 1905                            navigated |= pane.active_item()?.navigate(data, window, cx);
 1906                        }
 1907
 1908                        if navigated {
 1909                            break None;
 1910                        }
 1911                    } else {
 1912                        // If the item is no longer present in this pane, then retrieve its
 1913                        // path info in order to reopen it.
 1914                        break pane
 1915                            .nav_history()
 1916                            .path_for_item(entry.item.id())
 1917                            .map(|(project_path, abs_path)| (project_path, abs_path, entry));
 1918                    }
 1919                }
 1920            })
 1921        } else {
 1922            None
 1923        };
 1924
 1925        if let Some((project_path, abs_path, entry)) = to_load {
 1926            // If the item was no longer present, then load it again from its previous path, first try the local path
 1927            let open_by_project_path = self.load_path(project_path.clone(), window, cx);
 1928
 1929            cx.spawn_in(window, async move  |workspace, cx| {
 1930                let open_by_project_path = open_by_project_path.await;
 1931                let mut navigated = false;
 1932                match open_by_project_path
 1933                    .with_context(|| format!("Navigating to {project_path:?}"))
 1934                {
 1935                    Ok((project_entry_id, build_item)) => {
 1936                        let prev_active_item_id = pane.update(cx, |pane, _| {
 1937                            pane.nav_history_mut().set_mode(mode);
 1938                            pane.active_item().map(|p| p.item_id())
 1939                        })?;
 1940
 1941                        pane.update_in(cx, |pane, window, cx| {
 1942                            let item = pane.open_item(
 1943                                project_entry_id,
 1944                                project_path,
 1945                                true,
 1946                                entry.is_preview,
 1947                                true,
 1948                                None,
 1949                                window, cx,
 1950                                build_item,
 1951                            );
 1952                            navigated |= Some(item.item_id()) != prev_active_item_id;
 1953                            pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1954                            if let Some(data) = entry.data {
 1955                                navigated |= item.navigate(data, window, cx);
 1956                            }
 1957                        })?;
 1958                    }
 1959                    Err(open_by_project_path_e) => {
 1960                        // Fall back to opening by abs path, in case an external file was opened and closed,
 1961                        // and its worktree is now dropped
 1962                        if let Some(abs_path) = abs_path {
 1963                            let prev_active_item_id = pane.update(cx, |pane, _| {
 1964                                pane.nav_history_mut().set_mode(mode);
 1965                                pane.active_item().map(|p| p.item_id())
 1966                            })?;
 1967                            let open_by_abs_path = workspace.update_in(cx, |workspace, window, cx| {
 1968                                workspace.open_abs_path(abs_path.clone(), OpenOptions { visible: Some(OpenVisible::None), ..Default::default() }, window, cx)
 1969                            })?;
 1970                            match open_by_abs_path
 1971                                .await
 1972                                .with_context(|| format!("Navigating to {abs_path:?}"))
 1973                            {
 1974                                Ok(item) => {
 1975                                    pane.update_in(cx, |pane, window, cx| {
 1976                                        navigated |= Some(item.item_id()) != prev_active_item_id;
 1977                                        pane.nav_history_mut().set_mode(NavigationMode::Normal);
 1978                                        if let Some(data) = entry.data {
 1979                                            navigated |= item.navigate(data, window, cx);
 1980                                        }
 1981                                    })?;
 1982                                }
 1983                                Err(open_by_abs_path_e) => {
 1984                                    log::error!("Failed to navigate history: {open_by_project_path_e:#} and {open_by_abs_path_e:#}");
 1985                                }
 1986                            }
 1987                        }
 1988                    }
 1989                }
 1990
 1991                if !navigated {
 1992                    workspace
 1993                        .update_in(cx, |workspace, window, cx| {
 1994                            Self::navigate_history(workspace, pane, mode, window, cx)
 1995                        })?
 1996                        .await?;
 1997                }
 1998
 1999                Ok(())
 2000            })
 2001        } else {
 2002            Task::ready(Ok(()))
 2003        }
 2004    }
 2005
 2006    pub fn go_back(
 2007        &mut self,
 2008        pane: WeakEntity<Pane>,
 2009        window: &mut Window,
 2010        cx: &mut Context<Workspace>,
 2011    ) -> Task<Result<()>> {
 2012        self.navigate_history(pane, NavigationMode::GoingBack, window, cx)
 2013    }
 2014
 2015    pub fn go_forward(
 2016        &mut self,
 2017        pane: WeakEntity<Pane>,
 2018        window: &mut Window,
 2019        cx: &mut Context<Workspace>,
 2020    ) -> Task<Result<()>> {
 2021        self.navigate_history(pane, NavigationMode::GoingForward, window, cx)
 2022    }
 2023
 2024    pub fn reopen_closed_item(
 2025        &mut self,
 2026        window: &mut Window,
 2027        cx: &mut Context<Workspace>,
 2028    ) -> Task<Result<()>> {
 2029        self.navigate_history(
 2030            self.active_pane().downgrade(),
 2031            NavigationMode::ReopeningClosedItem,
 2032            window,
 2033            cx,
 2034        )
 2035    }
 2036
 2037    pub fn client(&self) -> &Arc<Client> {
 2038        &self.app_state.client
 2039    }
 2040
 2041    pub fn set_titlebar_item(&mut self, item: AnyView, _: &mut Window, cx: &mut Context<Self>) {
 2042        self.titlebar_item = Some(item);
 2043        cx.notify();
 2044    }
 2045
 2046    pub fn set_prompt_for_new_path(&mut self, prompt: PromptForNewPath) {
 2047        self.on_prompt_for_new_path = Some(prompt)
 2048    }
 2049
 2050    pub fn set_prompt_for_open_path(&mut self, prompt: PromptForOpenPath) {
 2051        self.on_prompt_for_open_path = Some(prompt)
 2052    }
 2053
 2054    pub fn set_terminal_provider(&mut self, provider: impl TerminalProvider + 'static) {
 2055        self.terminal_provider = Some(Box::new(provider));
 2056    }
 2057
 2058    pub fn set_debugger_provider(&mut self, provider: impl DebuggerProvider + 'static) {
 2059        self.debugger_provider = Some(Arc::new(provider));
 2060    }
 2061
 2062    pub fn debugger_provider(&self) -> Option<Arc<dyn DebuggerProvider>> {
 2063        self.debugger_provider.clone()
 2064    }
 2065
 2066    pub fn prompt_for_open_path(
 2067        &mut self,
 2068        path_prompt_options: PathPromptOptions,
 2069        lister: DirectoryLister,
 2070        window: &mut Window,
 2071        cx: &mut Context<Self>,
 2072    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2073        if !lister.is_local(cx) || !WorkspaceSettings::get_global(cx).use_system_path_prompts {
 2074            let prompt = self.on_prompt_for_open_path.take().unwrap();
 2075            let rx = prompt(self, lister, window, cx);
 2076            self.on_prompt_for_open_path = Some(prompt);
 2077            rx
 2078        } else {
 2079            let (tx, rx) = oneshot::channel();
 2080            let abs_path = cx.prompt_for_paths(path_prompt_options);
 2081
 2082            cx.spawn_in(window, async move |workspace, cx| {
 2083                let Ok(result) = abs_path.await else {
 2084                    return Ok(());
 2085                };
 2086
 2087                match result {
 2088                    Ok(result) => {
 2089                        tx.send(result).ok();
 2090                    }
 2091                    Err(err) => {
 2092                        let rx = workspace.update_in(cx, |workspace, window, cx| {
 2093                            workspace.show_portal_error(err.to_string(), cx);
 2094                            let prompt = workspace.on_prompt_for_open_path.take().unwrap();
 2095                            let rx = prompt(workspace, lister, window, cx);
 2096                            workspace.on_prompt_for_open_path = Some(prompt);
 2097                            rx
 2098                        })?;
 2099                        if let Ok(path) = rx.await {
 2100                            tx.send(path).ok();
 2101                        }
 2102                    }
 2103                };
 2104                anyhow::Ok(())
 2105            })
 2106            .detach();
 2107
 2108            rx
 2109        }
 2110    }
 2111
 2112    pub fn prompt_for_new_path(
 2113        &mut self,
 2114        lister: DirectoryLister,
 2115        suggested_name: Option<String>,
 2116        window: &mut Window,
 2117        cx: &mut Context<Self>,
 2118    ) -> oneshot::Receiver<Option<Vec<PathBuf>>> {
 2119        if self.project.read(cx).is_via_collab()
 2120            || self.project.read(cx).is_via_remote_server()
 2121            || !WorkspaceSettings::get_global(cx).use_system_path_prompts
 2122        {
 2123            let prompt = self.on_prompt_for_new_path.take().unwrap();
 2124            let rx = prompt(self, lister, window, cx);
 2125            self.on_prompt_for_new_path = Some(prompt);
 2126            return rx;
 2127        }
 2128
 2129        let (tx, rx) = oneshot::channel();
 2130        cx.spawn_in(window, async move |workspace, cx| {
 2131            let abs_path = workspace.update(cx, |workspace, cx| {
 2132                let relative_to = workspace
 2133                    .most_recent_active_path(cx)
 2134                    .and_then(|p| p.parent().map(|p| p.to_path_buf()))
 2135                    .or_else(|| {
 2136                        let project = workspace.project.read(cx);
 2137                        project.visible_worktrees(cx).find_map(|worktree| {
 2138                            Some(worktree.read(cx).as_local()?.abs_path().to_path_buf())
 2139                        })
 2140                    })
 2141                    .or_else(std::env::home_dir)
 2142                    .unwrap_or_else(|| PathBuf::from(""));
 2143                cx.prompt_for_new_path(&relative_to, suggested_name.as_deref())
 2144            })?;
 2145            let abs_path = match abs_path.await? {
 2146                Ok(path) => path,
 2147                Err(err) => {
 2148                    let rx = workspace.update_in(cx, |workspace, window, cx| {
 2149                        workspace.show_portal_error(err.to_string(), cx);
 2150
 2151                        let prompt = workspace.on_prompt_for_new_path.take().unwrap();
 2152                        let rx = prompt(workspace, lister, window, cx);
 2153                        workspace.on_prompt_for_new_path = Some(prompt);
 2154                        rx
 2155                    })?;
 2156                    if let Ok(path) = rx.await {
 2157                        tx.send(path).ok();
 2158                    }
 2159                    return anyhow::Ok(());
 2160                }
 2161            };
 2162
 2163            tx.send(abs_path.map(|path| vec![path])).ok();
 2164            anyhow::Ok(())
 2165        })
 2166        .detach();
 2167
 2168        rx
 2169    }
 2170
 2171    pub fn titlebar_item(&self) -> Option<AnyView> {
 2172        self.titlebar_item.clone()
 2173    }
 2174
 2175    /// Call the given callback with a workspace whose project is local.
 2176    ///
 2177    /// If the given workspace has a local project, then it will be passed
 2178    /// to the callback. Otherwise, a new empty window will be created.
 2179    pub fn with_local_workspace<T, F>(
 2180        &mut self,
 2181        window: &mut Window,
 2182        cx: &mut Context<Self>,
 2183        callback: F,
 2184    ) -> Task<Result<T>>
 2185    where
 2186        T: 'static,
 2187        F: 'static + FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) -> T,
 2188    {
 2189        if self.project.read(cx).is_local() {
 2190            Task::ready(Ok(callback(self, window, cx)))
 2191        } else {
 2192            let env = self.project.read(cx).cli_environment(cx);
 2193            let task = Self::new_local(Vec::new(), self.app_state.clone(), None, env, cx);
 2194            cx.spawn_in(window, async move |_vh, cx| {
 2195                let (workspace, _) = task.await?;
 2196                workspace.update(cx, callback)
 2197            })
 2198        }
 2199    }
 2200
 2201    pub fn worktrees<'a>(&self, cx: &'a App) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2202        self.project.read(cx).worktrees(cx)
 2203    }
 2204
 2205    pub fn visible_worktrees<'a>(
 2206        &self,
 2207        cx: &'a App,
 2208    ) -> impl 'a + Iterator<Item = Entity<Worktree>> {
 2209        self.project.read(cx).visible_worktrees(cx)
 2210    }
 2211
 2212    #[cfg(any(test, feature = "test-support"))]
 2213    pub fn worktree_scans_complete(&self, cx: &App) -> impl Future<Output = ()> + 'static + use<> {
 2214        let futures = self
 2215            .worktrees(cx)
 2216            .filter_map(|worktree| worktree.read(cx).as_local())
 2217            .map(|worktree| worktree.scan_complete())
 2218            .collect::<Vec<_>>();
 2219        async move {
 2220            for future in futures {
 2221                future.await;
 2222            }
 2223        }
 2224    }
 2225
 2226    pub fn close_global(cx: &mut App) {
 2227        cx.defer(|cx| {
 2228            cx.windows().iter().find(|window| {
 2229                window
 2230                    .update(cx, |_, window, _| {
 2231                        if window.is_window_active() {
 2232                            //This can only get called when the window's project connection has been lost
 2233                            //so we don't need to prompt the user for anything and instead just close the window
 2234                            window.remove_window();
 2235                            true
 2236                        } else {
 2237                            false
 2238                        }
 2239                    })
 2240                    .unwrap_or(false)
 2241            });
 2242        });
 2243    }
 2244
 2245    pub fn close_window(&mut self, _: &CloseWindow, window: &mut Window, cx: &mut Context<Self>) {
 2246        let prepare = self.prepare_to_close(CloseIntent::CloseWindow, window, cx);
 2247        cx.spawn_in(window, async move |_, cx| {
 2248            if prepare.await? {
 2249                cx.update(|window, _cx| window.remove_window())?;
 2250            }
 2251            anyhow::Ok(())
 2252        })
 2253        .detach_and_log_err(cx)
 2254    }
 2255
 2256    pub fn move_focused_panel_to_next_position(
 2257        &mut self,
 2258        _: &MoveFocusedPanelToNextPosition,
 2259        window: &mut Window,
 2260        cx: &mut Context<Self>,
 2261    ) {
 2262        let docks = self.all_docks();
 2263        let active_dock = docks
 2264            .into_iter()
 2265            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 2266
 2267        if let Some(dock) = active_dock {
 2268            dock.update(cx, |dock, cx| {
 2269                let active_panel = dock
 2270                    .active_panel()
 2271                    .filter(|panel| panel.panel_focus_handle(cx).contains_focused(window, cx));
 2272
 2273                if let Some(panel) = active_panel {
 2274                    panel.move_to_next_position(window, cx);
 2275                }
 2276            })
 2277        }
 2278    }
 2279
 2280    pub fn prepare_to_close(
 2281        &mut self,
 2282        close_intent: CloseIntent,
 2283        window: &mut Window,
 2284        cx: &mut Context<Self>,
 2285    ) -> Task<Result<bool>> {
 2286        let active_call = self.active_call().cloned();
 2287
 2288        // On Linux and Windows, closing the last window should restore the last workspace.
 2289        let save_last_workspace = cfg!(not(target_os = "macos"))
 2290            && close_intent != CloseIntent::ReplaceWindow
 2291            && cx.windows().len() == 1;
 2292
 2293        cx.spawn_in(window, async move |this, cx| {
 2294            let workspace_count = cx.update(|_window, cx| {
 2295                cx.windows()
 2296                    .iter()
 2297                    .filter(|window| window.downcast::<Workspace>().is_some())
 2298                    .count()
 2299            })?;
 2300
 2301            if let Some(active_call) = active_call
 2302                && workspace_count == 1
 2303                && active_call.read_with(cx, |call, _| call.room().is_some())?
 2304            {
 2305                if close_intent == CloseIntent::CloseWindow {
 2306                    let answer = cx.update(|window, cx| {
 2307                        window.prompt(
 2308                            PromptLevel::Warning,
 2309                            "Do you want to leave the current call?",
 2310                            None,
 2311                            &["Close window and hang up", "Cancel"],
 2312                            cx,
 2313                        )
 2314                    })?;
 2315
 2316                    if answer.await.log_err() == Some(1) {
 2317                        return anyhow::Ok(false);
 2318                    } else {
 2319                        active_call
 2320                            .update(cx, |call, cx| call.hang_up(cx))?
 2321                            .await
 2322                            .log_err();
 2323                    }
 2324                }
 2325                if close_intent == CloseIntent::ReplaceWindow {
 2326                    _ = active_call.update(cx, |this, cx| {
 2327                        let workspace = cx
 2328                            .windows()
 2329                            .iter()
 2330                            .filter_map(|window| window.downcast::<Workspace>())
 2331                            .next()
 2332                            .unwrap();
 2333                        let project = workspace.read(cx)?.project.clone();
 2334                        if project.read(cx).is_shared() {
 2335                            this.unshare_project(project, cx)?;
 2336                        }
 2337                        Ok::<_, anyhow::Error>(())
 2338                    })?;
 2339                }
 2340            }
 2341
 2342            let save_result = this
 2343                .update_in(cx, |this, window, cx| {
 2344                    this.save_all_internal(SaveIntent::Close, window, cx)
 2345                })?
 2346                .await;
 2347
 2348            // If we're not quitting, but closing, we remove the workspace from
 2349            // the current session.
 2350            if close_intent != CloseIntent::Quit
 2351                && !save_last_workspace
 2352                && save_result.as_ref().is_ok_and(|&res| res)
 2353            {
 2354                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))?
 2355                    .await;
 2356            }
 2357
 2358            save_result
 2359        })
 2360    }
 2361
 2362    fn save_all(&mut self, action: &SaveAll, window: &mut Window, cx: &mut Context<Self>) {
 2363        self.save_all_internal(
 2364            action.save_intent.unwrap_or(SaveIntent::SaveAll),
 2365            window,
 2366            cx,
 2367        )
 2368        .detach_and_log_err(cx);
 2369    }
 2370
 2371    fn send_keystrokes(
 2372        &mut self,
 2373        action: &SendKeystrokes,
 2374        window: &mut Window,
 2375        cx: &mut Context<Self>,
 2376    ) {
 2377        let keystrokes: Vec<Keystroke> = action
 2378            .0
 2379            .split(' ')
 2380            .flat_map(|k| Keystroke::parse(k).log_err())
 2381            .collect();
 2382        let _ = self.send_keystrokes_impl(keystrokes, window, cx);
 2383    }
 2384
 2385    pub fn send_keystrokes_impl(
 2386        &mut self,
 2387        keystrokes: Vec<Keystroke>,
 2388        window: &mut Window,
 2389        cx: &mut Context<Self>,
 2390    ) -> Shared<Task<()>> {
 2391        let mut state = self.dispatching_keystrokes.borrow_mut();
 2392        if !state.dispatched.insert(keystrokes.clone()) {
 2393            cx.propagate();
 2394            return state.task.clone().unwrap();
 2395        }
 2396
 2397        state.queue.extend(keystrokes);
 2398
 2399        let keystrokes = self.dispatching_keystrokes.clone();
 2400        if state.task.is_none() {
 2401            state.task = Some(
 2402                window
 2403                    .spawn(cx, async move |cx| {
 2404                        // limit to 100 keystrokes to avoid infinite recursion.
 2405                        for _ in 0..100 {
 2406                            let mut state = keystrokes.borrow_mut();
 2407                            let Some(keystroke) = state.queue.pop_front() else {
 2408                                state.dispatched.clear();
 2409                                state.task.take();
 2410                                return;
 2411                            };
 2412                            drop(state);
 2413                            cx.update(|window, cx| {
 2414                                let focused = window.focused(cx);
 2415                                window.dispatch_keystroke(keystroke.clone(), cx);
 2416                                if window.focused(cx) != focused {
 2417                                    // dispatch_keystroke may cause the focus to change.
 2418                                    // draw's side effect is to schedule the FocusChanged events in the current flush effect cycle
 2419                                    // And we need that to happen before the next keystroke to keep vim mode happy...
 2420                                    // (Note that the tests always do this implicitly, so you must manually test with something like:
 2421                                    //   "bindings": { "g z": ["workspace::SendKeystrokes", ": j <enter> u"]}
 2422                                    // )
 2423                                    window.draw(cx).clear();
 2424                                }
 2425                            })
 2426                            .ok();
 2427                        }
 2428
 2429                        *keystrokes.borrow_mut() = Default::default();
 2430                        log::error!("over 100 keystrokes passed to send_keystrokes");
 2431                    })
 2432                    .shared(),
 2433            );
 2434        }
 2435        state.task.clone().unwrap()
 2436    }
 2437
 2438    fn save_all_internal(
 2439        &mut self,
 2440        mut save_intent: SaveIntent,
 2441        window: &mut Window,
 2442        cx: &mut Context<Self>,
 2443    ) -> Task<Result<bool>> {
 2444        if self.project.read(cx).is_disconnected(cx) {
 2445            return Task::ready(Ok(true));
 2446        }
 2447        let dirty_items = self
 2448            .panes
 2449            .iter()
 2450            .flat_map(|pane| {
 2451                pane.read(cx).items().filter_map(|item| {
 2452                    if item.is_dirty(cx) {
 2453                        item.tab_content_text(0, cx);
 2454                        Some((pane.downgrade(), item.boxed_clone()))
 2455                    } else {
 2456                        None
 2457                    }
 2458                })
 2459            })
 2460            .collect::<Vec<_>>();
 2461
 2462        let project = self.project.clone();
 2463        cx.spawn_in(window, async move |workspace, cx| {
 2464            let dirty_items = if save_intent == SaveIntent::Close && !dirty_items.is_empty() {
 2465                let (serialize_tasks, remaining_dirty_items) =
 2466                    workspace.update_in(cx, |workspace, window, cx| {
 2467                        let mut remaining_dirty_items = Vec::new();
 2468                        let mut serialize_tasks = Vec::new();
 2469                        for (pane, item) in dirty_items {
 2470                            if let Some(task) = item
 2471                                .to_serializable_item_handle(cx)
 2472                                .and_then(|handle| handle.serialize(workspace, true, window, cx))
 2473                            {
 2474                                serialize_tasks.push(task);
 2475                            } else {
 2476                                remaining_dirty_items.push((pane, item));
 2477                            }
 2478                        }
 2479                        (serialize_tasks, remaining_dirty_items)
 2480                    })?;
 2481
 2482                futures::future::try_join_all(serialize_tasks).await?;
 2483
 2484                if remaining_dirty_items.len() > 1 {
 2485                    let answer = workspace.update_in(cx, |_, window, cx| {
 2486                        let detail = Pane::file_names_for_prompt(
 2487                            &mut remaining_dirty_items.iter().map(|(_, handle)| handle),
 2488                            cx,
 2489                        );
 2490                        window.prompt(
 2491                            PromptLevel::Warning,
 2492                            "Do you want to save all changes in the following files?",
 2493                            Some(&detail),
 2494                            &["Save all", "Discard all", "Cancel"],
 2495                            cx,
 2496                        )
 2497                    })?;
 2498                    match answer.await.log_err() {
 2499                        Some(0) => save_intent = SaveIntent::SaveAll,
 2500                        Some(1) => save_intent = SaveIntent::Skip,
 2501                        Some(2) => return Ok(false),
 2502                        _ => {}
 2503                    }
 2504                }
 2505
 2506                remaining_dirty_items
 2507            } else {
 2508                dirty_items
 2509            };
 2510
 2511            for (pane, item) in dirty_items {
 2512                let (singleton, project_entry_ids) =
 2513                    cx.update(|_, cx| (item.is_singleton(cx), item.project_entry_ids(cx)))?;
 2514                if (singleton || !project_entry_ids.is_empty())
 2515                    && !Pane::save_item(project.clone(), &pane, &*item, save_intent, cx).await?
 2516                {
 2517                    return Ok(false);
 2518                }
 2519            }
 2520            Ok(true)
 2521        })
 2522    }
 2523
 2524    pub fn open_workspace_for_paths(
 2525        &mut self,
 2526        replace_current_window: bool,
 2527        paths: Vec<PathBuf>,
 2528        window: &mut Window,
 2529        cx: &mut Context<Self>,
 2530    ) -> Task<Result<()>> {
 2531        let window_handle = window.window_handle().downcast::<Self>();
 2532        let is_remote = self.project.read(cx).is_via_collab();
 2533        let has_worktree = self.project.read(cx).worktrees(cx).next().is_some();
 2534        let has_dirty_items = self.items(cx).any(|item| item.is_dirty(cx));
 2535
 2536        let window_to_replace = if replace_current_window {
 2537            window_handle
 2538        } else if is_remote || has_worktree || has_dirty_items {
 2539            None
 2540        } else {
 2541            window_handle
 2542        };
 2543        let app_state = self.app_state.clone();
 2544
 2545        cx.spawn(async move |_, cx| {
 2546            cx.update(|cx| {
 2547                open_paths(
 2548                    &paths,
 2549                    app_state,
 2550                    OpenOptions {
 2551                        replace_window: window_to_replace,
 2552                        ..Default::default()
 2553                    },
 2554                    cx,
 2555                )
 2556            })?
 2557            .await?;
 2558            Ok(())
 2559        })
 2560    }
 2561
 2562    #[allow(clippy::type_complexity)]
 2563    pub fn open_paths(
 2564        &mut self,
 2565        mut abs_paths: Vec<PathBuf>,
 2566        options: OpenOptions,
 2567        pane: Option<WeakEntity<Pane>>,
 2568        window: &mut Window,
 2569        cx: &mut Context<Self>,
 2570    ) -> Task<Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>> {
 2571        let fs = self.app_state.fs.clone();
 2572
 2573        // Sort the paths to ensure we add worktrees for parents before their children.
 2574        abs_paths.sort_unstable();
 2575        cx.spawn_in(window, async move |this, cx| {
 2576            let mut tasks = Vec::with_capacity(abs_paths.len());
 2577
 2578            for abs_path in &abs_paths {
 2579                let visible = match options.visible.as_ref().unwrap_or(&OpenVisible::None) {
 2580                    OpenVisible::All => Some(true),
 2581                    OpenVisible::None => Some(false),
 2582                    OpenVisible::OnlyFiles => match fs.metadata(abs_path).await.log_err() {
 2583                        Some(Some(metadata)) => Some(!metadata.is_dir),
 2584                        Some(None) => Some(true),
 2585                        None => None,
 2586                    },
 2587                    OpenVisible::OnlyDirectories => match fs.metadata(abs_path).await.log_err() {
 2588                        Some(Some(metadata)) => Some(metadata.is_dir),
 2589                        Some(None) => Some(false),
 2590                        None => None,
 2591                    },
 2592                };
 2593                let project_path = match visible {
 2594                    Some(visible) => match this
 2595                        .update(cx, |this, cx| {
 2596                            Workspace::project_path_for_path(
 2597                                this.project.clone(),
 2598                                abs_path,
 2599                                visible,
 2600                                cx,
 2601                            )
 2602                        })
 2603                        .log_err()
 2604                    {
 2605                        Some(project_path) => project_path.await.log_err(),
 2606                        None => None,
 2607                    },
 2608                    None => None,
 2609                };
 2610
 2611                let this = this.clone();
 2612                let abs_path: Arc<Path> = SanitizedPath::new(&abs_path).as_path().into();
 2613                let fs = fs.clone();
 2614                let pane = pane.clone();
 2615                let task = cx.spawn(async move |cx| {
 2616                    let (worktree, project_path) = project_path?;
 2617                    if fs.is_dir(&abs_path).await {
 2618                        this.update(cx, |workspace, cx| {
 2619                            let worktree = worktree.read(cx);
 2620                            let worktree_abs_path = worktree.abs_path();
 2621                            let entry_id = if abs_path.as_ref() == worktree_abs_path.as_ref() {
 2622                                worktree.root_entry()
 2623                            } else {
 2624                                abs_path
 2625                                    .strip_prefix(worktree_abs_path.as_ref())
 2626                                    .ok()
 2627                                    .and_then(|relative_path| {
 2628                                        worktree.entry_for_path(relative_path)
 2629                                    })
 2630                            }
 2631                            .map(|entry| entry.id);
 2632                            if let Some(entry_id) = entry_id {
 2633                                workspace.project.update(cx, |_, cx| {
 2634                                    cx.emit(project::Event::ActiveEntryChanged(Some(entry_id)));
 2635                                })
 2636                            }
 2637                        })
 2638                        .ok()?;
 2639                        None
 2640                    } else {
 2641                        Some(
 2642                            this.update_in(cx, |this, window, cx| {
 2643                                this.open_path(
 2644                                    project_path,
 2645                                    pane,
 2646                                    options.focus.unwrap_or(true),
 2647                                    window,
 2648                                    cx,
 2649                                )
 2650                            })
 2651                            .ok()?
 2652                            .await,
 2653                        )
 2654                    }
 2655                });
 2656                tasks.push(task);
 2657            }
 2658
 2659            futures::future::join_all(tasks).await
 2660        })
 2661    }
 2662
 2663    pub fn open_resolved_path(
 2664        &mut self,
 2665        path: ResolvedPath,
 2666        window: &mut Window,
 2667        cx: &mut Context<Self>,
 2668    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 2669        match path {
 2670            ResolvedPath::ProjectPath { project_path, .. } => {
 2671                self.open_path(project_path, None, true, window, cx)
 2672            }
 2673            ResolvedPath::AbsPath { path, .. } => self.open_abs_path(
 2674                path,
 2675                OpenOptions {
 2676                    visible: Some(OpenVisible::None),
 2677                    ..Default::default()
 2678                },
 2679                window,
 2680                cx,
 2681            ),
 2682        }
 2683    }
 2684
 2685    pub fn absolute_path_of_worktree(
 2686        &self,
 2687        worktree_id: WorktreeId,
 2688        cx: &mut Context<Self>,
 2689    ) -> Option<PathBuf> {
 2690        self.project
 2691            .read(cx)
 2692            .worktree_for_id(worktree_id, cx)
 2693            // TODO: use `abs_path` or `root_dir`
 2694            .map(|wt| wt.read(cx).abs_path().as_ref().to_path_buf())
 2695    }
 2696
 2697    fn add_folder_to_project(
 2698        &mut self,
 2699        _: &AddFolderToProject,
 2700        window: &mut Window,
 2701        cx: &mut Context<Self>,
 2702    ) {
 2703        let project = self.project.read(cx);
 2704        if project.is_via_collab() {
 2705            self.show_error(
 2706                &anyhow!("You cannot add folders to someone else's project"),
 2707                cx,
 2708            );
 2709            return;
 2710        }
 2711        let paths = self.prompt_for_open_path(
 2712            PathPromptOptions {
 2713                files: false,
 2714                directories: true,
 2715                multiple: true,
 2716                prompt: None,
 2717            },
 2718            DirectoryLister::Project(self.project.clone()),
 2719            window,
 2720            cx,
 2721        );
 2722        cx.spawn_in(window, async move |this, cx| {
 2723            if let Some(paths) = paths.await.log_err().flatten() {
 2724                let results = this
 2725                    .update_in(cx, |this, window, cx| {
 2726                        this.open_paths(
 2727                            paths,
 2728                            OpenOptions {
 2729                                visible: Some(OpenVisible::All),
 2730                                ..Default::default()
 2731                            },
 2732                            None,
 2733                            window,
 2734                            cx,
 2735                        )
 2736                    })?
 2737                    .await;
 2738                for result in results.into_iter().flatten() {
 2739                    result.log_err();
 2740                }
 2741            }
 2742            anyhow::Ok(())
 2743        })
 2744        .detach_and_log_err(cx);
 2745    }
 2746
 2747    pub fn project_path_for_path(
 2748        project: Entity<Project>,
 2749        abs_path: &Path,
 2750        visible: bool,
 2751        cx: &mut App,
 2752    ) -> Task<Result<(Entity<Worktree>, ProjectPath)>> {
 2753        let entry = project.update(cx, |project, cx| {
 2754            project.find_or_create_worktree(abs_path, visible, cx)
 2755        });
 2756        cx.spawn(async move |cx| {
 2757            let (worktree, path) = entry.await?;
 2758            let worktree_id = worktree.read_with(cx, |t, _| t.id())?;
 2759            Ok((
 2760                worktree,
 2761                ProjectPath {
 2762                    worktree_id,
 2763                    path: path.into(),
 2764                },
 2765            ))
 2766        })
 2767    }
 2768
 2769    pub fn items<'a>(&'a self, cx: &'a App) -> impl 'a + Iterator<Item = &'a Box<dyn ItemHandle>> {
 2770        self.panes.iter().flat_map(|pane| pane.read(cx).items())
 2771    }
 2772
 2773    pub fn item_of_type<T: Item>(&self, cx: &App) -> Option<Entity<T>> {
 2774        self.items_of_type(cx).max_by_key(|item| item.item_id())
 2775    }
 2776
 2777    pub fn items_of_type<'a, T: Item>(
 2778        &'a self,
 2779        cx: &'a App,
 2780    ) -> impl 'a + Iterator<Item = Entity<T>> {
 2781        self.panes
 2782            .iter()
 2783            .flat_map(|pane| pane.read(cx).items_of_type())
 2784    }
 2785
 2786    pub fn active_item(&self, cx: &App) -> Option<Box<dyn ItemHandle>> {
 2787        self.active_pane().read(cx).active_item()
 2788    }
 2789
 2790    pub fn active_item_as<I: 'static>(&self, cx: &App) -> Option<Entity<I>> {
 2791        let item = self.active_item(cx)?;
 2792        item.to_any().downcast::<I>().ok()
 2793    }
 2794
 2795    fn active_project_path(&self, cx: &App) -> Option<ProjectPath> {
 2796        self.active_item(cx).and_then(|item| item.project_path(cx))
 2797    }
 2798
 2799    pub fn most_recent_active_path(&self, cx: &App) -> Option<PathBuf> {
 2800        self.recent_navigation_history_iter(cx)
 2801            .filter_map(|(path, abs_path)| {
 2802                let worktree = self
 2803                    .project
 2804                    .read(cx)
 2805                    .worktree_for_id(path.worktree_id, cx)?;
 2806                if worktree.read(cx).is_visible() {
 2807                    abs_path
 2808                } else {
 2809                    None
 2810                }
 2811            })
 2812            .next()
 2813    }
 2814
 2815    pub fn save_active_item(
 2816        &mut self,
 2817        save_intent: SaveIntent,
 2818        window: &mut Window,
 2819        cx: &mut App,
 2820    ) -> Task<Result<()>> {
 2821        let project = self.project.clone();
 2822        let pane = self.active_pane();
 2823        let item = pane.read(cx).active_item();
 2824        let pane = pane.downgrade();
 2825
 2826        window.spawn(cx, async move |cx| {
 2827            if let Some(item) = item {
 2828                Pane::save_item(project, &pane, item.as_ref(), save_intent, cx)
 2829                    .await
 2830                    .map(|_| ())
 2831            } else {
 2832                Ok(())
 2833            }
 2834        })
 2835    }
 2836
 2837    pub fn close_inactive_items_and_panes(
 2838        &mut self,
 2839        action: &CloseInactiveTabsAndPanes,
 2840        window: &mut Window,
 2841        cx: &mut Context<Self>,
 2842    ) {
 2843        if let Some(task) = self.close_all_internal(
 2844            true,
 2845            action.save_intent.unwrap_or(SaveIntent::Close),
 2846            window,
 2847            cx,
 2848        ) {
 2849            task.detach_and_log_err(cx)
 2850        }
 2851    }
 2852
 2853    pub fn close_all_items_and_panes(
 2854        &mut self,
 2855        action: &CloseAllItemsAndPanes,
 2856        window: &mut Window,
 2857        cx: &mut Context<Self>,
 2858    ) {
 2859        if let Some(task) = self.close_all_internal(
 2860            false,
 2861            action.save_intent.unwrap_or(SaveIntent::Close),
 2862            window,
 2863            cx,
 2864        ) {
 2865            task.detach_and_log_err(cx)
 2866        }
 2867    }
 2868
 2869    fn close_all_internal(
 2870        &mut self,
 2871        retain_active_pane: bool,
 2872        save_intent: SaveIntent,
 2873        window: &mut Window,
 2874        cx: &mut Context<Self>,
 2875    ) -> Option<Task<Result<()>>> {
 2876        let current_pane = self.active_pane();
 2877
 2878        let mut tasks = Vec::new();
 2879
 2880        if retain_active_pane {
 2881            let current_pane_close = current_pane.update(cx, |pane, cx| {
 2882                pane.close_other_items(
 2883                    &CloseOtherItems {
 2884                        save_intent: None,
 2885                        close_pinned: false,
 2886                    },
 2887                    None,
 2888                    window,
 2889                    cx,
 2890                )
 2891            });
 2892
 2893            tasks.push(current_pane_close);
 2894        }
 2895
 2896        for pane in self.panes() {
 2897            if retain_active_pane && pane.entity_id() == current_pane.entity_id() {
 2898                continue;
 2899            }
 2900
 2901            let close_pane_items = pane.update(cx, |pane: &mut Pane, cx| {
 2902                pane.close_all_items(
 2903                    &CloseAllItems {
 2904                        save_intent: Some(save_intent),
 2905                        close_pinned: false,
 2906                    },
 2907                    window,
 2908                    cx,
 2909                )
 2910            });
 2911
 2912            tasks.push(close_pane_items)
 2913        }
 2914
 2915        if tasks.is_empty() {
 2916            None
 2917        } else {
 2918            Some(cx.spawn_in(window, async move |_, _| {
 2919                for task in tasks {
 2920                    task.await?
 2921                }
 2922                Ok(())
 2923            }))
 2924        }
 2925    }
 2926
 2927    pub fn is_dock_at_position_open(&self, position: DockPosition, cx: &mut Context<Self>) -> bool {
 2928        self.dock_at_position(position).read(cx).is_open()
 2929    }
 2930
 2931    pub fn toggle_dock(
 2932        &mut self,
 2933        dock_side: DockPosition,
 2934        window: &mut Window,
 2935        cx: &mut Context<Self>,
 2936    ) {
 2937        let dock = self.dock_at_position(dock_side);
 2938        let mut focus_center = false;
 2939        let mut reveal_dock = false;
 2940        dock.update(cx, |dock, cx| {
 2941            let other_is_zoomed = self.zoomed.is_some() && self.zoomed_position != Some(dock_side);
 2942            let was_visible = dock.is_open() && !other_is_zoomed;
 2943            dock.set_open(!was_visible, window, cx);
 2944
 2945            if dock.active_panel().is_none() {
 2946                let Some(panel_ix) = dock
 2947                    .first_enabled_panel_idx(cx)
 2948                    .log_with_level(log::Level::Info)
 2949                else {
 2950                    return;
 2951                };
 2952                dock.activate_panel(panel_ix, window, cx);
 2953            }
 2954
 2955            if let Some(active_panel) = dock.active_panel() {
 2956                if was_visible {
 2957                    if active_panel
 2958                        .panel_focus_handle(cx)
 2959                        .contains_focused(window, cx)
 2960                    {
 2961                        focus_center = true;
 2962                    }
 2963                } else {
 2964                    let focus_handle = &active_panel.panel_focus_handle(cx);
 2965                    window.focus(focus_handle);
 2966                    reveal_dock = true;
 2967                }
 2968            }
 2969        });
 2970
 2971        if reveal_dock {
 2972            self.dismiss_zoomed_items_to_reveal(Some(dock_side), window, cx);
 2973        }
 2974
 2975        if focus_center {
 2976            self.active_pane
 2977                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 2978        }
 2979
 2980        cx.notify();
 2981        self.serialize_workspace(window, cx);
 2982    }
 2983
 2984    fn active_dock(&self, window: &Window, cx: &Context<Self>) -> Option<&Entity<Dock>> {
 2985        self.all_docks().into_iter().find(|&dock| {
 2986            dock.read(cx).is_open() && dock.focus_handle(cx).contains_focused(window, cx)
 2987        })
 2988    }
 2989
 2990    fn close_active_dock(&mut self, window: &mut Window, cx: &mut Context<Self>) -> bool {
 2991        if let Some(dock) = self.active_dock(window, cx) {
 2992            dock.update(cx, |dock, cx| {
 2993                dock.set_open(false, window, cx);
 2994            });
 2995            return true;
 2996        }
 2997        false
 2998    }
 2999
 3000    pub fn close_all_docks(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3001        for dock in self.all_docks() {
 3002            dock.update(cx, |dock, cx| {
 3003                dock.set_open(false, window, cx);
 3004            });
 3005        }
 3006
 3007        cx.focus_self(window);
 3008        cx.notify();
 3009        self.serialize_workspace(window, cx);
 3010    }
 3011
 3012    /// Transfer focus to the panel of the given type.
 3013    pub fn focus_panel<T: Panel>(
 3014        &mut self,
 3015        window: &mut Window,
 3016        cx: &mut Context<Self>,
 3017    ) -> Option<Entity<T>> {
 3018        let panel = self.focus_or_unfocus_panel::<T>(window, cx, |_, _, _| true)?;
 3019        panel.to_any().downcast().ok()
 3020    }
 3021
 3022    /// Focus the panel of the given type if it isn't already focused. If it is
 3023    /// already focused, then transfer focus back to the workspace center.
 3024    pub fn toggle_panel_focus<T: Panel>(
 3025        &mut self,
 3026        window: &mut Window,
 3027        cx: &mut Context<Self>,
 3028    ) -> bool {
 3029        let mut did_focus_panel = false;
 3030        self.focus_or_unfocus_panel::<T>(window, cx, |panel, window, cx| {
 3031            did_focus_panel = !panel.panel_focus_handle(cx).contains_focused(window, cx);
 3032            did_focus_panel
 3033        });
 3034        did_focus_panel
 3035    }
 3036
 3037    pub fn activate_panel_for_proto_id(
 3038        &mut self,
 3039        panel_id: PanelId,
 3040        window: &mut Window,
 3041        cx: &mut Context<Self>,
 3042    ) -> Option<Arc<dyn PanelHandle>> {
 3043        let mut panel = None;
 3044        for dock in self.all_docks() {
 3045            if let Some(panel_index) = dock.read(cx).panel_index_for_proto_id(panel_id) {
 3046                panel = dock.update(cx, |dock, cx| {
 3047                    dock.activate_panel(panel_index, window, cx);
 3048                    dock.set_open(true, window, cx);
 3049                    dock.active_panel().cloned()
 3050                });
 3051                break;
 3052            }
 3053        }
 3054
 3055        if panel.is_some() {
 3056            cx.notify();
 3057            self.serialize_workspace(window, cx);
 3058        }
 3059
 3060        panel
 3061    }
 3062
 3063    /// Focus or unfocus the given panel type, depending on the given callback.
 3064    fn focus_or_unfocus_panel<T: Panel>(
 3065        &mut self,
 3066        window: &mut Window,
 3067        cx: &mut Context<Self>,
 3068        mut should_focus: impl FnMut(&dyn PanelHandle, &mut Window, &mut Context<Dock>) -> bool,
 3069    ) -> Option<Arc<dyn PanelHandle>> {
 3070        let mut result_panel = None;
 3071        let mut serialize = false;
 3072        for dock in self.all_docks() {
 3073            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3074                let mut focus_center = false;
 3075                let panel = dock.update(cx, |dock, cx| {
 3076                    dock.activate_panel(panel_index, window, cx);
 3077
 3078                    let panel = dock.active_panel().cloned();
 3079                    if let Some(panel) = panel.as_ref() {
 3080                        if should_focus(&**panel, window, cx) {
 3081                            dock.set_open(true, window, cx);
 3082                            panel.panel_focus_handle(cx).focus(window);
 3083                        } else {
 3084                            focus_center = true;
 3085                        }
 3086                    }
 3087                    panel
 3088                });
 3089
 3090                if focus_center {
 3091                    self.active_pane
 3092                        .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3093                }
 3094
 3095                result_panel = panel;
 3096                serialize = true;
 3097                break;
 3098            }
 3099        }
 3100
 3101        if serialize {
 3102            self.serialize_workspace(window, cx);
 3103        }
 3104
 3105        cx.notify();
 3106        result_panel
 3107    }
 3108
 3109    /// Open the panel of the given type
 3110    pub fn open_panel<T: Panel>(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3111        for dock in self.all_docks() {
 3112            if let Some(panel_index) = dock.read(cx).panel_index_for_type::<T>() {
 3113                dock.update(cx, |dock, cx| {
 3114                    dock.activate_panel(panel_index, window, cx);
 3115                    dock.set_open(true, window, cx);
 3116                });
 3117            }
 3118        }
 3119    }
 3120
 3121    pub fn close_panel<T: Panel>(&self, window: &mut Window, cx: &mut Context<Self>) {
 3122        for dock in self.all_docks().iter() {
 3123            dock.update(cx, |dock, cx| {
 3124                if dock.panel::<T>().is_some() {
 3125                    dock.set_open(false, window, cx)
 3126                }
 3127            })
 3128        }
 3129    }
 3130
 3131    pub fn panel<T: Panel>(&self, cx: &App) -> Option<Entity<T>> {
 3132        self.all_docks()
 3133            .iter()
 3134            .find_map(|dock| dock.read(cx).panel::<T>())
 3135    }
 3136
 3137    fn dismiss_zoomed_items_to_reveal(
 3138        &mut self,
 3139        dock_to_reveal: Option<DockPosition>,
 3140        window: &mut Window,
 3141        cx: &mut Context<Self>,
 3142    ) {
 3143        // If a center pane is zoomed, unzoom it.
 3144        for pane in &self.panes {
 3145            if pane != &self.active_pane || dock_to_reveal.is_some() {
 3146                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 3147            }
 3148        }
 3149
 3150        // If another dock is zoomed, hide it.
 3151        let mut focus_center = false;
 3152        for dock in self.all_docks() {
 3153            dock.update(cx, |dock, cx| {
 3154                if Some(dock.position()) != dock_to_reveal
 3155                    && let Some(panel) = dock.active_panel()
 3156                    && panel.is_zoomed(window, cx)
 3157                {
 3158                    focus_center |= panel.panel_focus_handle(cx).contains_focused(window, cx);
 3159                    dock.set_open(false, window, cx);
 3160                }
 3161            });
 3162        }
 3163
 3164        if focus_center {
 3165            self.active_pane
 3166                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)))
 3167        }
 3168
 3169        if self.zoomed_position != dock_to_reveal {
 3170            self.zoomed = None;
 3171            self.zoomed_position = None;
 3172            cx.emit(Event::ZoomChanged);
 3173        }
 3174
 3175        cx.notify();
 3176    }
 3177
 3178    fn add_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 3179        let pane = cx.new(|cx| {
 3180            let mut pane = Pane::new(
 3181                self.weak_handle(),
 3182                self.project.clone(),
 3183                self.pane_history_timestamp.clone(),
 3184                None,
 3185                NewFile.boxed_clone(),
 3186                window,
 3187                cx,
 3188            );
 3189            pane.set_can_split(Some(Arc::new(|_, _, _, _| true)));
 3190            pane
 3191        });
 3192        cx.subscribe_in(&pane, window, Self::handle_pane_event)
 3193            .detach();
 3194        self.panes.push(pane.clone());
 3195
 3196        window.focus(&pane.focus_handle(cx));
 3197
 3198        cx.emit(Event::PaneAdded(pane.clone()));
 3199        pane
 3200    }
 3201
 3202    pub fn add_item_to_center(
 3203        &mut self,
 3204        item: Box<dyn ItemHandle>,
 3205        window: &mut Window,
 3206        cx: &mut Context<Self>,
 3207    ) -> bool {
 3208        if let Some(center_pane) = self.last_active_center_pane.clone() {
 3209            if let Some(center_pane) = center_pane.upgrade() {
 3210                center_pane.update(cx, |pane, cx| {
 3211                    pane.add_item(item, true, true, None, window, cx)
 3212                });
 3213                true
 3214            } else {
 3215                false
 3216            }
 3217        } else {
 3218            false
 3219        }
 3220    }
 3221
 3222    pub fn add_item_to_active_pane(
 3223        &mut self,
 3224        item: Box<dyn ItemHandle>,
 3225        destination_index: Option<usize>,
 3226        focus_item: bool,
 3227        window: &mut Window,
 3228        cx: &mut App,
 3229    ) {
 3230        self.add_item(
 3231            self.active_pane.clone(),
 3232            item,
 3233            destination_index,
 3234            false,
 3235            focus_item,
 3236            window,
 3237            cx,
 3238        )
 3239    }
 3240
 3241    pub fn add_item(
 3242        &mut self,
 3243        pane: Entity<Pane>,
 3244        item: Box<dyn ItemHandle>,
 3245        destination_index: Option<usize>,
 3246        activate_pane: bool,
 3247        focus_item: bool,
 3248        window: &mut Window,
 3249        cx: &mut App,
 3250    ) {
 3251        if let Some(text) = item.telemetry_event_text(cx) {
 3252            telemetry::event!(text);
 3253        }
 3254
 3255        pane.update(cx, |pane, cx| {
 3256            pane.add_item(
 3257                item,
 3258                activate_pane,
 3259                focus_item,
 3260                destination_index,
 3261                window,
 3262                cx,
 3263            )
 3264        });
 3265    }
 3266
 3267    pub fn split_item(
 3268        &mut self,
 3269        split_direction: SplitDirection,
 3270        item: Box<dyn ItemHandle>,
 3271        window: &mut Window,
 3272        cx: &mut Context<Self>,
 3273    ) {
 3274        let new_pane = self.split_pane(self.active_pane.clone(), split_direction, window, cx);
 3275        self.add_item(new_pane, item, None, true, true, window, cx);
 3276    }
 3277
 3278    pub fn open_abs_path(
 3279        &mut self,
 3280        abs_path: PathBuf,
 3281        options: OpenOptions,
 3282        window: &mut Window,
 3283        cx: &mut Context<Self>,
 3284    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3285        cx.spawn_in(window, async move |workspace, cx| {
 3286            let open_paths_task_result = workspace
 3287                .update_in(cx, |workspace, window, cx| {
 3288                    workspace.open_paths(vec![abs_path.clone()], options, None, window, cx)
 3289                })
 3290                .with_context(|| format!("open abs path {abs_path:?} task spawn"))?
 3291                .await;
 3292            anyhow::ensure!(
 3293                open_paths_task_result.len() == 1,
 3294                "open abs path {abs_path:?} task returned incorrect number of results"
 3295            );
 3296            match open_paths_task_result
 3297                .into_iter()
 3298                .next()
 3299                .expect("ensured single task result")
 3300            {
 3301                Some(open_result) => {
 3302                    open_result.with_context(|| format!("open abs path {abs_path:?} task join"))
 3303                }
 3304                None => anyhow::bail!("open abs path {abs_path:?} task returned None"),
 3305            }
 3306        })
 3307    }
 3308
 3309    pub fn split_abs_path(
 3310        &mut self,
 3311        abs_path: PathBuf,
 3312        visible: bool,
 3313        window: &mut Window,
 3314        cx: &mut Context<Self>,
 3315    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3316        let project_path_task =
 3317            Workspace::project_path_for_path(self.project.clone(), &abs_path, visible, cx);
 3318        cx.spawn_in(window, async move |this, cx| {
 3319            let (_, path) = project_path_task.await?;
 3320            this.update_in(cx, |this, window, cx| this.split_path(path, window, cx))?
 3321                .await
 3322        })
 3323    }
 3324
 3325    pub fn open_path(
 3326        &mut self,
 3327        path: impl Into<ProjectPath>,
 3328        pane: Option<WeakEntity<Pane>>,
 3329        focus_item: bool,
 3330        window: &mut Window,
 3331        cx: &mut App,
 3332    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3333        self.open_path_preview(path, pane, focus_item, false, true, window, cx)
 3334    }
 3335
 3336    pub fn open_path_preview(
 3337        &mut self,
 3338        path: impl Into<ProjectPath>,
 3339        pane: Option<WeakEntity<Pane>>,
 3340        focus_item: bool,
 3341        allow_preview: bool,
 3342        activate: bool,
 3343        window: &mut Window,
 3344        cx: &mut App,
 3345    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3346        let pane = pane.unwrap_or_else(|| {
 3347            self.last_active_center_pane.clone().unwrap_or_else(|| {
 3348                self.panes
 3349                    .first()
 3350                    .expect("There must be an active pane")
 3351                    .downgrade()
 3352            })
 3353        });
 3354
 3355        let project_path = path.into();
 3356        let task = self.load_path(project_path.clone(), window, cx);
 3357        window.spawn(cx, async move |cx| {
 3358            let (project_entry_id, build_item) = task.await?;
 3359
 3360            pane.update_in(cx, |pane, window, cx| {
 3361                pane.open_item(
 3362                    project_entry_id,
 3363                    project_path,
 3364                    focus_item,
 3365                    allow_preview,
 3366                    activate,
 3367                    None,
 3368                    window,
 3369                    cx,
 3370                    build_item,
 3371                )
 3372            })
 3373        })
 3374    }
 3375
 3376    pub fn split_path(
 3377        &mut self,
 3378        path: impl Into<ProjectPath>,
 3379        window: &mut Window,
 3380        cx: &mut Context<Self>,
 3381    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3382        self.split_path_preview(path, false, None, window, cx)
 3383    }
 3384
 3385    pub fn split_path_preview(
 3386        &mut self,
 3387        path: impl Into<ProjectPath>,
 3388        allow_preview: bool,
 3389        split_direction: Option<SplitDirection>,
 3390        window: &mut Window,
 3391        cx: &mut Context<Self>,
 3392    ) -> Task<anyhow::Result<Box<dyn ItemHandle>>> {
 3393        let pane = self.last_active_center_pane.clone().unwrap_or_else(|| {
 3394            self.panes
 3395                .first()
 3396                .expect("There must be an active pane")
 3397                .downgrade()
 3398        });
 3399
 3400        if let Member::Pane(center_pane) = &self.center.root
 3401            && center_pane.read(cx).items_len() == 0
 3402        {
 3403            return self.open_path(path, Some(pane), true, window, cx);
 3404        }
 3405
 3406        let project_path = path.into();
 3407        let task = self.load_path(project_path.clone(), window, cx);
 3408        cx.spawn_in(window, async move |this, cx| {
 3409            let (project_entry_id, build_item) = task.await?;
 3410            this.update_in(cx, move |this, window, cx| -> Option<_> {
 3411                let pane = pane.upgrade()?;
 3412                let new_pane = this.split_pane(
 3413                    pane,
 3414                    split_direction.unwrap_or(SplitDirection::Right),
 3415                    window,
 3416                    cx,
 3417                );
 3418                new_pane.update(cx, |new_pane, cx| {
 3419                    Some(new_pane.open_item(
 3420                        project_entry_id,
 3421                        project_path,
 3422                        true,
 3423                        allow_preview,
 3424                        true,
 3425                        None,
 3426                        window,
 3427                        cx,
 3428                        build_item,
 3429                    ))
 3430                })
 3431            })
 3432            .map(|option| option.context("pane was dropped"))?
 3433        })
 3434    }
 3435
 3436    fn load_path(
 3437        &mut self,
 3438        path: ProjectPath,
 3439        window: &mut Window,
 3440        cx: &mut App,
 3441    ) -> Task<Result<(Option<ProjectEntryId>, WorkspaceItemBuilder)>> {
 3442        let registry = cx.default_global::<ProjectItemRegistry>().clone();
 3443        registry.open_path(self.project(), &path, window, cx)
 3444    }
 3445
 3446    pub fn find_project_item<T>(
 3447        &self,
 3448        pane: &Entity<Pane>,
 3449        project_item: &Entity<T::Item>,
 3450        cx: &App,
 3451    ) -> Option<Entity<T>>
 3452    where
 3453        T: ProjectItem,
 3454    {
 3455        use project::ProjectItem as _;
 3456        let project_item = project_item.read(cx);
 3457        let entry_id = project_item.entry_id(cx);
 3458        let project_path = project_item.project_path(cx);
 3459
 3460        let mut item = None;
 3461        if let Some(entry_id) = entry_id {
 3462            item = pane.read(cx).item_for_entry(entry_id, cx);
 3463        }
 3464        if item.is_none()
 3465            && let Some(project_path) = project_path
 3466        {
 3467            item = pane.read(cx).item_for_path(project_path, cx);
 3468        }
 3469
 3470        item.and_then(|item| item.downcast::<T>())
 3471    }
 3472
 3473    pub fn is_project_item_open<T>(
 3474        &self,
 3475        pane: &Entity<Pane>,
 3476        project_item: &Entity<T::Item>,
 3477        cx: &App,
 3478    ) -> bool
 3479    where
 3480        T: ProjectItem,
 3481    {
 3482        self.find_project_item::<T>(pane, project_item, cx)
 3483            .is_some()
 3484    }
 3485
 3486    pub fn open_project_item<T>(
 3487        &mut self,
 3488        pane: Entity<Pane>,
 3489        project_item: Entity<T::Item>,
 3490        activate_pane: bool,
 3491        focus_item: bool,
 3492        window: &mut Window,
 3493        cx: &mut Context<Self>,
 3494    ) -> Entity<T>
 3495    where
 3496        T: ProjectItem,
 3497    {
 3498        if let Some(item) = self.find_project_item(&pane, &project_item, cx) {
 3499            self.activate_item(&item, activate_pane, focus_item, window, cx);
 3500            return item;
 3501        }
 3502
 3503        let item = pane.update(cx, |pane, cx| {
 3504            cx.new(|cx| {
 3505                T::for_project_item(self.project().clone(), Some(pane), project_item, window, cx)
 3506            })
 3507        });
 3508        let item_id = item.item_id();
 3509        let mut destination_index = None;
 3510        pane.update(cx, |pane, cx| {
 3511            if PreviewTabsSettings::get_global(cx).enable_preview_from_code_navigation
 3512                && let Some(preview_item_id) = pane.preview_item_id()
 3513                && preview_item_id != item_id
 3514            {
 3515                destination_index = pane.close_current_preview_item(window, cx);
 3516            }
 3517            pane.set_preview_item_id(Some(item.item_id()), cx)
 3518        });
 3519
 3520        self.add_item(
 3521            pane,
 3522            Box::new(item.clone()),
 3523            destination_index,
 3524            activate_pane,
 3525            focus_item,
 3526            window,
 3527            cx,
 3528        );
 3529        item
 3530    }
 3531
 3532    pub fn open_shared_screen(
 3533        &mut self,
 3534        peer_id: PeerId,
 3535        window: &mut Window,
 3536        cx: &mut Context<Self>,
 3537    ) {
 3538        if let Some(shared_screen) =
 3539            self.shared_screen_for_peer(peer_id, &self.active_pane, window, cx)
 3540        {
 3541            self.active_pane.update(cx, |pane, cx| {
 3542                pane.add_item(Box::new(shared_screen), false, true, None, window, cx)
 3543            });
 3544        }
 3545    }
 3546
 3547    pub fn activate_item(
 3548        &mut self,
 3549        item: &dyn ItemHandle,
 3550        activate_pane: bool,
 3551        focus_item: bool,
 3552        window: &mut Window,
 3553        cx: &mut App,
 3554    ) -> bool {
 3555        let result = self.panes.iter().find_map(|pane| {
 3556            pane.read(cx)
 3557                .index_for_item(item)
 3558                .map(|ix| (pane.clone(), ix))
 3559        });
 3560        if let Some((pane, ix)) = result {
 3561            pane.update(cx, |pane, cx| {
 3562                pane.activate_item(ix, activate_pane, focus_item, window, cx)
 3563            });
 3564            true
 3565        } else {
 3566            false
 3567        }
 3568    }
 3569
 3570    fn activate_pane_at_index(
 3571        &mut self,
 3572        action: &ActivatePane,
 3573        window: &mut Window,
 3574        cx: &mut Context<Self>,
 3575    ) {
 3576        let panes = self.center.panes();
 3577        if let Some(pane) = panes.get(action.0).map(|p| (*p).clone()) {
 3578            window.focus(&pane.focus_handle(cx));
 3579        } else {
 3580            self.split_and_clone(self.active_pane.clone(), SplitDirection::Right, window, cx);
 3581        }
 3582    }
 3583
 3584    fn move_item_to_pane_at_index(
 3585        &mut self,
 3586        action: &MoveItemToPane,
 3587        window: &mut Window,
 3588        cx: &mut Context<Self>,
 3589    ) {
 3590        let panes = self.center.panes();
 3591        let destination = match panes.get(action.destination) {
 3592            Some(&destination) => destination.clone(),
 3593            None => {
 3594                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3595                    return;
 3596                }
 3597                let direction = SplitDirection::Right;
 3598                let split_off_pane = self
 3599                    .find_pane_in_direction(direction, cx)
 3600                    .unwrap_or_else(|| self.active_pane.clone());
 3601                let new_pane = self.add_pane(window, cx);
 3602                if self
 3603                    .center
 3604                    .split(&split_off_pane, &new_pane, direction)
 3605                    .log_err()
 3606                    .is_none()
 3607                {
 3608                    return;
 3609                };
 3610                new_pane
 3611            }
 3612        };
 3613
 3614        if action.clone {
 3615            clone_active_item(
 3616                self.database_id(),
 3617                &self.active_pane,
 3618                &destination,
 3619                action.focus,
 3620                window,
 3621                cx,
 3622            )
 3623        } else {
 3624            move_active_item(
 3625                &self.active_pane,
 3626                &destination,
 3627                action.focus,
 3628                true,
 3629                window,
 3630                cx,
 3631            )
 3632        }
 3633    }
 3634
 3635    pub fn activate_next_pane(&mut self, window: &mut Window, cx: &mut App) {
 3636        let panes = self.center.panes();
 3637        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3638            let next_ix = (ix + 1) % panes.len();
 3639            let next_pane = panes[next_ix].clone();
 3640            window.focus(&next_pane.focus_handle(cx));
 3641        }
 3642    }
 3643
 3644    pub fn activate_previous_pane(&mut self, window: &mut Window, cx: &mut App) {
 3645        let panes = self.center.panes();
 3646        if let Some(ix) = panes.iter().position(|pane| **pane == self.active_pane) {
 3647            let prev_ix = cmp::min(ix.wrapping_sub(1), panes.len() - 1);
 3648            let prev_pane = panes[prev_ix].clone();
 3649            window.focus(&prev_pane.focus_handle(cx));
 3650        }
 3651    }
 3652
 3653    pub fn activate_pane_in_direction(
 3654        &mut self,
 3655        direction: SplitDirection,
 3656        window: &mut Window,
 3657        cx: &mut App,
 3658    ) {
 3659        use ActivateInDirectionTarget as Target;
 3660        enum Origin {
 3661            LeftDock,
 3662            RightDock,
 3663            BottomDock,
 3664            Center,
 3665        }
 3666
 3667        let origin: Origin = [
 3668            (&self.left_dock, Origin::LeftDock),
 3669            (&self.right_dock, Origin::RightDock),
 3670            (&self.bottom_dock, Origin::BottomDock),
 3671        ]
 3672        .into_iter()
 3673        .find_map(|(dock, origin)| {
 3674            if dock.focus_handle(cx).contains_focused(window, cx) && dock.read(cx).is_open() {
 3675                Some(origin)
 3676            } else {
 3677                None
 3678            }
 3679        })
 3680        .unwrap_or(Origin::Center);
 3681
 3682        let get_last_active_pane = || {
 3683            let pane = self
 3684                .last_active_center_pane
 3685                .clone()
 3686                .unwrap_or_else(|| {
 3687                    self.panes
 3688                        .first()
 3689                        .expect("There must be an active pane")
 3690                        .downgrade()
 3691                })
 3692                .upgrade()?;
 3693            (pane.read(cx).items_len() != 0).then_some(pane)
 3694        };
 3695
 3696        let try_dock =
 3697            |dock: &Entity<Dock>| dock.read(cx).is_open().then(|| Target::Dock(dock.clone()));
 3698
 3699        let target = match (origin, direction) {
 3700            // We're in the center, so we first try to go to a different pane,
 3701            // otherwise try to go to a dock.
 3702            (Origin::Center, direction) => {
 3703                if let Some(pane) = self.find_pane_in_direction(direction, cx) {
 3704                    Some(Target::Pane(pane))
 3705                } else {
 3706                    match direction {
 3707                        SplitDirection::Up => None,
 3708                        SplitDirection::Down => try_dock(&self.bottom_dock),
 3709                        SplitDirection::Left => try_dock(&self.left_dock),
 3710                        SplitDirection::Right => try_dock(&self.right_dock),
 3711                    }
 3712                }
 3713            }
 3714
 3715            (Origin::LeftDock, SplitDirection::Right) => {
 3716                if let Some(last_active_pane) = get_last_active_pane() {
 3717                    Some(Target::Pane(last_active_pane))
 3718                } else {
 3719                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.right_dock))
 3720                }
 3721            }
 3722
 3723            (Origin::LeftDock, SplitDirection::Down)
 3724            | (Origin::RightDock, SplitDirection::Down) => try_dock(&self.bottom_dock),
 3725
 3726            (Origin::BottomDock, SplitDirection::Up) => get_last_active_pane().map(Target::Pane),
 3727            (Origin::BottomDock, SplitDirection::Left) => try_dock(&self.left_dock),
 3728            (Origin::BottomDock, SplitDirection::Right) => try_dock(&self.right_dock),
 3729
 3730            (Origin::RightDock, SplitDirection::Left) => {
 3731                if let Some(last_active_pane) = get_last_active_pane() {
 3732                    Some(Target::Pane(last_active_pane))
 3733                } else {
 3734                    try_dock(&self.bottom_dock).or_else(|| try_dock(&self.left_dock))
 3735                }
 3736            }
 3737
 3738            _ => None,
 3739        };
 3740
 3741        match target {
 3742            Some(ActivateInDirectionTarget::Pane(pane)) => {
 3743                let pane = pane.read(cx);
 3744                if let Some(item) = pane.active_item() {
 3745                    item.item_focus_handle(cx).focus(window);
 3746                } else {
 3747                    log::error!(
 3748                        "Could not find a focus target when in switching focus in {direction} direction for a pane",
 3749                    );
 3750                }
 3751            }
 3752            Some(ActivateInDirectionTarget::Dock(dock)) => {
 3753                // Defer this to avoid a panic when the dock's active panel is already on the stack.
 3754                window.defer(cx, move |window, cx| {
 3755                    let dock = dock.read(cx);
 3756                    if let Some(panel) = dock.active_panel() {
 3757                        panel.panel_focus_handle(cx).focus(window);
 3758                    } else {
 3759                        log::error!("Could not find a focus target when in switching focus in {direction} direction for a {:?} dock", dock.position());
 3760                    }
 3761                })
 3762            }
 3763            None => {}
 3764        }
 3765    }
 3766
 3767    pub fn move_item_to_pane_in_direction(
 3768        &mut self,
 3769        action: &MoveItemToPaneInDirection,
 3770        window: &mut Window,
 3771        cx: &mut Context<Self>,
 3772    ) {
 3773        let destination = match self.find_pane_in_direction(action.direction, cx) {
 3774            Some(destination) => destination,
 3775            None => {
 3776                if !action.clone && self.active_pane.read(cx).items_len() < 2 {
 3777                    return;
 3778                }
 3779                let new_pane = self.add_pane(window, cx);
 3780                if self
 3781                    .center
 3782                    .split(&self.active_pane, &new_pane, action.direction)
 3783                    .log_err()
 3784                    .is_none()
 3785                {
 3786                    return;
 3787                };
 3788                new_pane
 3789            }
 3790        };
 3791
 3792        if action.clone {
 3793            clone_active_item(
 3794                self.database_id(),
 3795                &self.active_pane,
 3796                &destination,
 3797                action.focus,
 3798                window,
 3799                cx,
 3800            )
 3801        } else {
 3802            move_active_item(
 3803                &self.active_pane,
 3804                &destination,
 3805                action.focus,
 3806                true,
 3807                window,
 3808                cx,
 3809            );
 3810        }
 3811    }
 3812
 3813    pub fn bounding_box_for_pane(&self, pane: &Entity<Pane>) -> Option<Bounds<Pixels>> {
 3814        self.center.bounding_box_for_pane(pane)
 3815    }
 3816
 3817    pub fn find_pane_in_direction(
 3818        &mut self,
 3819        direction: SplitDirection,
 3820        cx: &App,
 3821    ) -> Option<Entity<Pane>> {
 3822        self.center
 3823            .find_pane_in_direction(&self.active_pane, direction, cx)
 3824            .cloned()
 3825    }
 3826
 3827    pub fn swap_pane_in_direction(&mut self, direction: SplitDirection, cx: &mut Context<Self>) {
 3828        if let Some(to) = self.find_pane_in_direction(direction, cx) {
 3829            self.center.swap(&self.active_pane, &to);
 3830            cx.notify();
 3831        }
 3832    }
 3833
 3834    pub fn resize_pane(
 3835        &mut self,
 3836        axis: gpui::Axis,
 3837        amount: Pixels,
 3838        window: &mut Window,
 3839        cx: &mut Context<Self>,
 3840    ) {
 3841        let docks = self.all_docks();
 3842        let active_dock = docks
 3843            .into_iter()
 3844            .find(|dock| dock.focus_handle(cx).contains_focused(window, cx));
 3845
 3846        if let Some(dock) = active_dock {
 3847            let Some(panel_size) = dock.read(cx).active_panel_size(window, cx) else {
 3848                return;
 3849            };
 3850            match dock.read(cx).position() {
 3851                DockPosition::Left => self.resize_left_dock(panel_size + amount, window, cx),
 3852                DockPosition::Bottom => self.resize_bottom_dock(panel_size + amount, window, cx),
 3853                DockPosition::Right => self.resize_right_dock(panel_size + amount, window, cx),
 3854            }
 3855        } else {
 3856            self.center
 3857                .resize(&self.active_pane, axis, amount, &self.bounds);
 3858        }
 3859        cx.notify();
 3860    }
 3861
 3862    pub fn reset_pane_sizes(&mut self, cx: &mut Context<Self>) {
 3863        self.center.reset_pane_sizes();
 3864        cx.notify();
 3865    }
 3866
 3867    fn handle_pane_focused(
 3868        &mut self,
 3869        pane: Entity<Pane>,
 3870        window: &mut Window,
 3871        cx: &mut Context<Self>,
 3872    ) {
 3873        // This is explicitly hoisted out of the following check for pane identity as
 3874        // terminal panel panes are not registered as a center panes.
 3875        self.status_bar.update(cx, |status_bar, cx| {
 3876            status_bar.set_active_pane(&pane, window, cx);
 3877        });
 3878        if self.active_pane != pane {
 3879            self.set_active_pane(&pane, window, cx);
 3880        }
 3881
 3882        if self.last_active_center_pane.is_none() {
 3883            self.last_active_center_pane = Some(pane.downgrade());
 3884        }
 3885
 3886        self.dismiss_zoomed_items_to_reveal(None, window, cx);
 3887        if pane.read(cx).is_zoomed() {
 3888            self.zoomed = Some(pane.downgrade().into());
 3889        } else {
 3890            self.zoomed = None;
 3891        }
 3892        self.zoomed_position = None;
 3893        cx.emit(Event::ZoomChanged);
 3894        self.update_active_view_for_followers(window, cx);
 3895        pane.update(cx, |pane, _| {
 3896            pane.track_alternate_file_items();
 3897        });
 3898
 3899        cx.notify();
 3900    }
 3901
 3902    fn set_active_pane(
 3903        &mut self,
 3904        pane: &Entity<Pane>,
 3905        window: &mut Window,
 3906        cx: &mut Context<Self>,
 3907    ) {
 3908        self.active_pane = pane.clone();
 3909        self.active_item_path_changed(window, cx);
 3910        self.last_active_center_pane = Some(pane.downgrade());
 3911    }
 3912
 3913    fn handle_panel_focused(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 3914        self.update_active_view_for_followers(window, cx);
 3915    }
 3916
 3917    fn handle_pane_event(
 3918        &mut self,
 3919        pane: &Entity<Pane>,
 3920        event: &pane::Event,
 3921        window: &mut Window,
 3922        cx: &mut Context<Self>,
 3923    ) {
 3924        let mut serialize_workspace = true;
 3925        match event {
 3926            pane::Event::AddItem { item } => {
 3927                item.added_to_pane(self, pane.clone(), window, cx);
 3928                cx.emit(Event::ItemAdded {
 3929                    item: item.boxed_clone(),
 3930                });
 3931            }
 3932            pane::Event::Split(direction) => {
 3933                self.split_and_clone(pane.clone(), *direction, window, cx);
 3934            }
 3935            pane::Event::JoinIntoNext => {
 3936                self.join_pane_into_next(pane.clone(), window, cx);
 3937            }
 3938            pane::Event::JoinAll => {
 3939                self.join_all_panes(window, cx);
 3940            }
 3941            pane::Event::Remove { focus_on_pane } => {
 3942                self.remove_pane(pane.clone(), focus_on_pane.clone(), window, cx);
 3943            }
 3944            pane::Event::ActivateItem {
 3945                local,
 3946                focus_changed,
 3947            } => {
 3948                window.invalidate_character_coordinates();
 3949
 3950                pane.update(cx, |pane, _| {
 3951                    pane.track_alternate_file_items();
 3952                });
 3953                if *local {
 3954                    self.unfollow_in_pane(pane, window, cx);
 3955                }
 3956                serialize_workspace = *focus_changed || pane != self.active_pane();
 3957                if pane == self.active_pane() {
 3958                    self.active_item_path_changed(window, cx);
 3959                    self.update_active_view_for_followers(window, cx);
 3960                } else if *local {
 3961                    self.set_active_pane(pane, window, cx);
 3962                }
 3963            }
 3964            pane::Event::UserSavedItem { item, save_intent } => {
 3965                cx.emit(Event::UserSavedItem {
 3966                    pane: pane.downgrade(),
 3967                    item: item.boxed_clone(),
 3968                    save_intent: *save_intent,
 3969                });
 3970                serialize_workspace = false;
 3971            }
 3972            pane::Event::ChangeItemTitle => {
 3973                if *pane == self.active_pane {
 3974                    self.active_item_path_changed(window, cx);
 3975                }
 3976                serialize_workspace = false;
 3977            }
 3978            pane::Event::RemovedItem { item } => {
 3979                cx.emit(Event::ActiveItemChanged);
 3980                self.update_window_edited(window, cx);
 3981                if let hash_map::Entry::Occupied(entry) = self.panes_by_item.entry(item.item_id())
 3982                    && entry.get().entity_id() == pane.entity_id()
 3983                {
 3984                    entry.remove();
 3985                }
 3986                cx.emit(Event::ItemRemoved {
 3987                    item_id: item.item_id(),
 3988                });
 3989            }
 3990            pane::Event::Focus => {
 3991                window.invalidate_character_coordinates();
 3992                self.handle_pane_focused(pane.clone(), window, cx);
 3993            }
 3994            pane::Event::ZoomIn => {
 3995                if *pane == self.active_pane {
 3996                    pane.update(cx, |pane, cx| pane.set_zoomed(true, cx));
 3997                    if pane.read(cx).has_focus(window, cx) {
 3998                        self.zoomed = Some(pane.downgrade().into());
 3999                        self.zoomed_position = None;
 4000                        cx.emit(Event::ZoomChanged);
 4001                    }
 4002                    cx.notify();
 4003                }
 4004            }
 4005            pane::Event::ZoomOut => {
 4006                pane.update(cx, |pane, cx| pane.set_zoomed(false, cx));
 4007                if self.zoomed_position.is_none() {
 4008                    self.zoomed = None;
 4009                    cx.emit(Event::ZoomChanged);
 4010                }
 4011                cx.notify();
 4012            }
 4013            pane::Event::ItemPinned | pane::Event::ItemUnpinned => {}
 4014        }
 4015
 4016        if serialize_workspace {
 4017            self.serialize_workspace(window, cx);
 4018        }
 4019    }
 4020
 4021    pub fn unfollow_in_pane(
 4022        &mut self,
 4023        pane: &Entity<Pane>,
 4024        window: &mut Window,
 4025        cx: &mut Context<Workspace>,
 4026    ) -> Option<CollaboratorId> {
 4027        let leader_id = self.leader_for_pane(pane)?;
 4028        self.unfollow(leader_id, window, cx);
 4029        Some(leader_id)
 4030    }
 4031
 4032    pub fn split_pane(
 4033        &mut self,
 4034        pane_to_split: Entity<Pane>,
 4035        split_direction: SplitDirection,
 4036        window: &mut Window,
 4037        cx: &mut Context<Self>,
 4038    ) -> Entity<Pane> {
 4039        let new_pane = self.add_pane(window, cx);
 4040        self.center
 4041            .split(&pane_to_split, &new_pane, split_direction)
 4042            .unwrap();
 4043        cx.notify();
 4044        new_pane
 4045    }
 4046
 4047    pub fn split_and_clone(
 4048        &mut self,
 4049        pane: Entity<Pane>,
 4050        direction: SplitDirection,
 4051        window: &mut Window,
 4052        cx: &mut Context<Self>,
 4053    ) -> Option<Entity<Pane>> {
 4054        let item = pane.read(cx).active_item()?;
 4055        let maybe_pane_handle =
 4056            if let Some(clone) = item.clone_on_split(self.database_id(), window, cx) {
 4057                let new_pane = self.add_pane(window, cx);
 4058                new_pane.update(cx, |pane, cx| {
 4059                    pane.add_item(clone, true, true, None, window, cx)
 4060                });
 4061                self.center.split(&pane, &new_pane, direction).unwrap();
 4062                Some(new_pane)
 4063            } else {
 4064                None
 4065            };
 4066        cx.notify();
 4067        maybe_pane_handle
 4068    }
 4069
 4070    pub fn join_all_panes(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4071        let active_item = self.active_pane.read(cx).active_item();
 4072        for pane in &self.panes {
 4073            join_pane_into_active(&self.active_pane, pane, window, cx);
 4074        }
 4075        if let Some(active_item) = active_item {
 4076            self.activate_item(active_item.as_ref(), true, true, window, cx);
 4077        }
 4078        cx.notify();
 4079    }
 4080
 4081    pub fn join_pane_into_next(
 4082        &mut self,
 4083        pane: Entity<Pane>,
 4084        window: &mut Window,
 4085        cx: &mut Context<Self>,
 4086    ) {
 4087        let next_pane = self
 4088            .find_pane_in_direction(SplitDirection::Right, cx)
 4089            .or_else(|| self.find_pane_in_direction(SplitDirection::Down, cx))
 4090            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4091            .or_else(|| self.find_pane_in_direction(SplitDirection::Up, cx));
 4092        let Some(next_pane) = next_pane else {
 4093            return;
 4094        };
 4095        move_all_items(&pane, &next_pane, window, cx);
 4096        cx.notify();
 4097    }
 4098
 4099    fn remove_pane(
 4100        &mut self,
 4101        pane: Entity<Pane>,
 4102        focus_on: Option<Entity<Pane>>,
 4103        window: &mut Window,
 4104        cx: &mut Context<Self>,
 4105    ) {
 4106        if self.center.remove(&pane).unwrap() {
 4107            self.force_remove_pane(&pane, &focus_on, window, cx);
 4108            self.unfollow_in_pane(&pane, window, cx);
 4109            self.last_leaders_by_pane.remove(&pane.downgrade());
 4110            for removed_item in pane.read(cx).items() {
 4111                self.panes_by_item.remove(&removed_item.item_id());
 4112            }
 4113
 4114            cx.notify();
 4115        } else {
 4116            self.active_item_path_changed(window, cx);
 4117        }
 4118        cx.emit(Event::PaneRemoved);
 4119    }
 4120
 4121    pub fn panes(&self) -> &[Entity<Pane>] {
 4122        &self.panes
 4123    }
 4124
 4125    pub fn active_pane(&self) -> &Entity<Pane> {
 4126        &self.active_pane
 4127    }
 4128
 4129    pub fn focused_pane(&self, window: &Window, cx: &App) -> Entity<Pane> {
 4130        for dock in self.all_docks() {
 4131            if dock.focus_handle(cx).contains_focused(window, cx)
 4132                && let Some(pane) = dock
 4133                    .read(cx)
 4134                    .active_panel()
 4135                    .and_then(|panel| panel.pane(cx))
 4136            {
 4137                return pane;
 4138            }
 4139        }
 4140        self.active_pane().clone()
 4141    }
 4142
 4143    pub fn adjacent_pane(&mut self, window: &mut Window, cx: &mut Context<Self>) -> Entity<Pane> {
 4144        self.find_pane_in_direction(SplitDirection::Right, cx)
 4145            .or_else(|| self.find_pane_in_direction(SplitDirection::Left, cx))
 4146            .unwrap_or_else(|| {
 4147                self.split_pane(self.active_pane.clone(), SplitDirection::Right, window, cx)
 4148            })
 4149    }
 4150
 4151    pub fn pane_for(&self, handle: &dyn ItemHandle) -> Option<Entity<Pane>> {
 4152        let weak_pane = self.panes_by_item.get(&handle.item_id())?;
 4153        weak_pane.upgrade()
 4154    }
 4155
 4156    fn collaborator_left(&mut self, peer_id: PeerId, window: &mut Window, cx: &mut Context<Self>) {
 4157        self.follower_states.retain(|leader_id, state| {
 4158            if *leader_id == CollaboratorId::PeerId(peer_id) {
 4159                for item in state.items_by_leader_view_id.values() {
 4160                    item.view.set_leader_id(None, window, cx);
 4161                }
 4162                false
 4163            } else {
 4164                true
 4165            }
 4166        });
 4167        cx.notify();
 4168    }
 4169
 4170    pub fn start_following(
 4171        &mut self,
 4172        leader_id: impl Into<CollaboratorId>,
 4173        window: &mut Window,
 4174        cx: &mut Context<Self>,
 4175    ) -> Option<Task<Result<()>>> {
 4176        let leader_id = leader_id.into();
 4177        let pane = self.active_pane().clone();
 4178
 4179        self.last_leaders_by_pane
 4180            .insert(pane.downgrade(), leader_id);
 4181        self.unfollow(leader_id, window, cx);
 4182        self.unfollow_in_pane(&pane, window, cx);
 4183        self.follower_states.insert(
 4184            leader_id,
 4185            FollowerState {
 4186                center_pane: pane.clone(),
 4187                dock_pane: None,
 4188                active_view_id: None,
 4189                items_by_leader_view_id: Default::default(),
 4190            },
 4191        );
 4192        cx.notify();
 4193
 4194        match leader_id {
 4195            CollaboratorId::PeerId(leader_peer_id) => {
 4196                let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4197                let project_id = self.project.read(cx).remote_id();
 4198                let request = self.app_state.client.request(proto::Follow {
 4199                    room_id,
 4200                    project_id,
 4201                    leader_id: Some(leader_peer_id),
 4202                });
 4203
 4204                Some(cx.spawn_in(window, async move |this, cx| {
 4205                    let response = request.await?;
 4206                    this.update(cx, |this, _| {
 4207                        let state = this
 4208                            .follower_states
 4209                            .get_mut(&leader_id)
 4210                            .context("following interrupted")?;
 4211                        state.active_view_id = response
 4212                            .active_view
 4213                            .as_ref()
 4214                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4215                        anyhow::Ok(())
 4216                    })??;
 4217                    if let Some(view) = response.active_view {
 4218                        Self::add_view_from_leader(this.clone(), leader_peer_id, &view, cx).await?;
 4219                    }
 4220                    this.update_in(cx, |this, window, cx| {
 4221                        this.leader_updated(leader_id, window, cx)
 4222                    })?;
 4223                    Ok(())
 4224                }))
 4225            }
 4226            CollaboratorId::Agent => {
 4227                self.leader_updated(leader_id, window, cx)?;
 4228                Some(Task::ready(Ok(())))
 4229            }
 4230        }
 4231    }
 4232
 4233    pub fn follow_next_collaborator(
 4234        &mut self,
 4235        _: &FollowNextCollaborator,
 4236        window: &mut Window,
 4237        cx: &mut Context<Self>,
 4238    ) {
 4239        let collaborators = self.project.read(cx).collaborators();
 4240        let next_leader_id = if let Some(leader_id) = self.leader_for_pane(&self.active_pane) {
 4241            let mut collaborators = collaborators.keys().copied();
 4242            for peer_id in collaborators.by_ref() {
 4243                if CollaboratorId::PeerId(peer_id) == leader_id {
 4244                    break;
 4245                }
 4246            }
 4247            collaborators.next().map(CollaboratorId::PeerId)
 4248        } else if let Some(last_leader_id) =
 4249            self.last_leaders_by_pane.get(&self.active_pane.downgrade())
 4250        {
 4251            match last_leader_id {
 4252                CollaboratorId::PeerId(peer_id) => {
 4253                    if collaborators.contains_key(peer_id) {
 4254                        Some(*last_leader_id)
 4255                    } else {
 4256                        None
 4257                    }
 4258                }
 4259                CollaboratorId::Agent => Some(CollaboratorId::Agent),
 4260            }
 4261        } else {
 4262            None
 4263        };
 4264
 4265        let pane = self.active_pane.clone();
 4266        let Some(leader_id) = next_leader_id.or_else(|| {
 4267            Some(CollaboratorId::PeerId(
 4268                collaborators.keys().copied().next()?,
 4269            ))
 4270        }) else {
 4271            return;
 4272        };
 4273        if self.unfollow_in_pane(&pane, window, cx) == Some(leader_id) {
 4274            return;
 4275        }
 4276        if let Some(task) = self.start_following(leader_id, window, cx) {
 4277            task.detach_and_log_err(cx)
 4278        }
 4279    }
 4280
 4281    pub fn follow(
 4282        &mut self,
 4283        leader_id: impl Into<CollaboratorId>,
 4284        window: &mut Window,
 4285        cx: &mut Context<Self>,
 4286    ) {
 4287        let leader_id = leader_id.into();
 4288
 4289        if let CollaboratorId::PeerId(peer_id) = leader_id {
 4290            let Some(room) = ActiveCall::global(cx).read(cx).room() else {
 4291                return;
 4292            };
 4293            let room = room.read(cx);
 4294            let Some(remote_participant) = room.remote_participant_for_peer_id(peer_id) else {
 4295                return;
 4296            };
 4297
 4298            let project = self.project.read(cx);
 4299
 4300            let other_project_id = match remote_participant.location {
 4301                call::ParticipantLocation::External => None,
 4302                call::ParticipantLocation::UnsharedProject => None,
 4303                call::ParticipantLocation::SharedProject { project_id } => {
 4304                    if Some(project_id) == project.remote_id() {
 4305                        None
 4306                    } else {
 4307                        Some(project_id)
 4308                    }
 4309                }
 4310            };
 4311
 4312            // if they are active in another project, follow there.
 4313            if let Some(project_id) = other_project_id {
 4314                let app_state = self.app_state.clone();
 4315                crate::join_in_room_project(project_id, remote_participant.user.id, app_state, cx)
 4316                    .detach_and_log_err(cx);
 4317            }
 4318        }
 4319
 4320        // if you're already following, find the right pane and focus it.
 4321        if let Some(follower_state) = self.follower_states.get(&leader_id) {
 4322            window.focus(&follower_state.pane().focus_handle(cx));
 4323
 4324            return;
 4325        }
 4326
 4327        // Otherwise, follow.
 4328        if let Some(task) = self.start_following(leader_id, window, cx) {
 4329            task.detach_and_log_err(cx)
 4330        }
 4331    }
 4332
 4333    pub fn unfollow(
 4334        &mut self,
 4335        leader_id: impl Into<CollaboratorId>,
 4336        window: &mut Window,
 4337        cx: &mut Context<Self>,
 4338    ) -> Option<()> {
 4339        cx.notify();
 4340
 4341        let leader_id = leader_id.into();
 4342        let state = self.follower_states.remove(&leader_id)?;
 4343        for (_, item) in state.items_by_leader_view_id {
 4344            item.view.set_leader_id(None, window, cx);
 4345        }
 4346
 4347        if let CollaboratorId::PeerId(leader_peer_id) = leader_id {
 4348            let project_id = self.project.read(cx).remote_id();
 4349            let room_id = self.active_call()?.read(cx).room()?.read(cx).id();
 4350            self.app_state
 4351                .client
 4352                .send(proto::Unfollow {
 4353                    room_id,
 4354                    project_id,
 4355                    leader_id: Some(leader_peer_id),
 4356                })
 4357                .log_err();
 4358        }
 4359
 4360        Some(())
 4361    }
 4362
 4363    pub fn is_being_followed(&self, id: impl Into<CollaboratorId>) -> bool {
 4364        self.follower_states.contains_key(&id.into())
 4365    }
 4366
 4367    fn active_item_path_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4368        cx.emit(Event::ActiveItemChanged);
 4369        let active_entry = self.active_project_path(cx);
 4370        self.project
 4371            .update(cx, |project, cx| project.set_active_path(active_entry, cx));
 4372
 4373        self.update_window_title(window, cx);
 4374    }
 4375
 4376    fn update_window_title(&mut self, window: &mut Window, cx: &mut App) {
 4377        let project = self.project().read(cx);
 4378        let mut title = String::new();
 4379
 4380        for (i, worktree) in project.worktrees(cx).enumerate() {
 4381            let name = {
 4382                let settings_location = SettingsLocation {
 4383                    worktree_id: worktree.read(cx).id(),
 4384                    path: Path::new(""),
 4385                };
 4386
 4387                let settings = WorktreeSettings::get(Some(settings_location), cx);
 4388                match &settings.project_name {
 4389                    Some(name) => name.as_str(),
 4390                    None => worktree.read(cx).root_name(),
 4391                }
 4392            };
 4393            if i > 0 {
 4394                title.push_str(", ");
 4395            }
 4396            title.push_str(name);
 4397        }
 4398
 4399        if title.is_empty() {
 4400            title = "empty project".to_string();
 4401        }
 4402
 4403        if let Some(path) = self.active_item(cx).and_then(|item| item.project_path(cx)) {
 4404            let filename = path
 4405                .path
 4406                .file_name()
 4407                .map(|s| s.to_string_lossy())
 4408                .or_else(|| {
 4409                    Some(Cow::Borrowed(
 4410                        project
 4411                            .worktree_for_id(path.worktree_id, cx)?
 4412                            .read(cx)
 4413                            .root_name(),
 4414                    ))
 4415                });
 4416
 4417            if let Some(filename) = filename {
 4418                title.push_str("");
 4419                title.push_str(filename.as_ref());
 4420            }
 4421        }
 4422
 4423        if project.is_via_collab() {
 4424            title.push_str("");
 4425        } else if project.is_shared() {
 4426            title.push_str("");
 4427        }
 4428
 4429        if let Some(last_title) = self.last_window_title.as_ref()
 4430            && &title == last_title
 4431        {
 4432            return;
 4433        }
 4434        window.set_window_title(&title);
 4435        SystemWindowTabController::update_tab_title(
 4436            cx,
 4437            window.window_handle().window_id(),
 4438            SharedString::from(&title),
 4439        );
 4440        self.last_window_title = Some(title);
 4441    }
 4442
 4443    fn update_window_edited(&mut self, window: &mut Window, cx: &mut App) {
 4444        let is_edited = !self.project.read(cx).is_disconnected(cx) && !self.dirty_items.is_empty();
 4445        if is_edited != self.window_edited {
 4446            self.window_edited = is_edited;
 4447            window.set_window_edited(self.window_edited)
 4448        }
 4449    }
 4450
 4451    fn update_item_dirty_state(
 4452        &mut self,
 4453        item: &dyn ItemHandle,
 4454        window: &mut Window,
 4455        cx: &mut App,
 4456    ) {
 4457        let is_dirty = item.is_dirty(cx);
 4458        let item_id = item.item_id();
 4459        let was_dirty = self.dirty_items.contains_key(&item_id);
 4460        if is_dirty == was_dirty {
 4461            return;
 4462        }
 4463        if was_dirty {
 4464            self.dirty_items.remove(&item_id);
 4465            self.update_window_edited(window, cx);
 4466            return;
 4467        }
 4468        if let Some(window_handle) = window.window_handle().downcast::<Self>() {
 4469            let s = item.on_release(
 4470                cx,
 4471                Box::new(move |cx| {
 4472                    window_handle
 4473                        .update(cx, |this, window, cx| {
 4474                            this.dirty_items.remove(&item_id);
 4475                            this.update_window_edited(window, cx)
 4476                        })
 4477                        .ok();
 4478                }),
 4479            );
 4480            self.dirty_items.insert(item_id, s);
 4481            self.update_window_edited(window, cx);
 4482        }
 4483    }
 4484
 4485    fn render_notifications(&self, _window: &mut Window, _cx: &mut Context<Self>) -> Option<Div> {
 4486        if self.notifications.is_empty() {
 4487            None
 4488        } else {
 4489            Some(
 4490                div()
 4491                    .absolute()
 4492                    .right_3()
 4493                    .bottom_3()
 4494                    .w_112()
 4495                    .h_full()
 4496                    .flex()
 4497                    .flex_col()
 4498                    .justify_end()
 4499                    .gap_2()
 4500                    .children(
 4501                        self.notifications
 4502                            .iter()
 4503                            .map(|(_, notification)| notification.clone().into_any()),
 4504                    ),
 4505            )
 4506        }
 4507    }
 4508
 4509    // RPC handlers
 4510
 4511    fn active_view_for_follower(
 4512        &self,
 4513        follower_project_id: Option<u64>,
 4514        window: &mut Window,
 4515        cx: &mut Context<Self>,
 4516    ) -> Option<proto::View> {
 4517        let (item, panel_id) = self.active_item_for_followers(window, cx);
 4518        let item = item?;
 4519        let leader_id = self
 4520            .pane_for(&*item)
 4521            .and_then(|pane| self.leader_for_pane(&pane));
 4522        let leader_peer_id = match leader_id {
 4523            Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4524            Some(CollaboratorId::Agent) | None => None,
 4525        };
 4526
 4527        let item_handle = item.to_followable_item_handle(cx)?;
 4528        let id = item_handle.remote_id(&self.app_state.client, window, cx)?;
 4529        let variant = item_handle.to_state_proto(window, cx)?;
 4530
 4531        if item_handle.is_project_item(window, cx)
 4532            && (follower_project_id.is_none()
 4533                || follower_project_id != self.project.read(cx).remote_id())
 4534        {
 4535            return None;
 4536        }
 4537
 4538        Some(proto::View {
 4539            id: id.to_proto(),
 4540            leader_id: leader_peer_id,
 4541            variant: Some(variant),
 4542            panel_id: panel_id.map(|id| id as i32),
 4543        })
 4544    }
 4545
 4546    fn handle_follow(
 4547        &mut self,
 4548        follower_project_id: Option<u64>,
 4549        window: &mut Window,
 4550        cx: &mut Context<Self>,
 4551    ) -> proto::FollowResponse {
 4552        let active_view = self.active_view_for_follower(follower_project_id, window, cx);
 4553
 4554        cx.notify();
 4555        proto::FollowResponse {
 4556            // TODO: Remove after version 0.145.x stabilizes.
 4557            active_view_id: active_view.as_ref().and_then(|view| view.id.clone()),
 4558            views: active_view.iter().cloned().collect(),
 4559            active_view,
 4560        }
 4561    }
 4562
 4563    fn handle_update_followers(
 4564        &mut self,
 4565        leader_id: PeerId,
 4566        message: proto::UpdateFollowers,
 4567        _window: &mut Window,
 4568        _cx: &mut Context<Self>,
 4569    ) {
 4570        self.leader_updates_tx
 4571            .unbounded_send((leader_id, message))
 4572            .ok();
 4573    }
 4574
 4575    async fn process_leader_update(
 4576        this: &WeakEntity<Self>,
 4577        leader_id: PeerId,
 4578        update: proto::UpdateFollowers,
 4579        cx: &mut AsyncWindowContext,
 4580    ) -> Result<()> {
 4581        match update.variant.context("invalid update")? {
 4582            proto::update_followers::Variant::CreateView(view) => {
 4583                let view_id = ViewId::from_proto(view.id.clone().context("invalid view id")?)?;
 4584                let should_add_view = this.update(cx, |this, _| {
 4585                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4586                        anyhow::Ok(!state.items_by_leader_view_id.contains_key(&view_id))
 4587                    } else {
 4588                        anyhow::Ok(false)
 4589                    }
 4590                })??;
 4591
 4592                if should_add_view {
 4593                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4594                }
 4595            }
 4596            proto::update_followers::Variant::UpdateActiveView(update_active_view) => {
 4597                let should_add_view = this.update(cx, |this, _| {
 4598                    if let Some(state) = this.follower_states.get_mut(&leader_id.into()) {
 4599                        state.active_view_id = update_active_view
 4600                            .view
 4601                            .as_ref()
 4602                            .and_then(|view| ViewId::from_proto(view.id.clone()?).ok());
 4603
 4604                        if state.active_view_id.is_some_and(|view_id| {
 4605                            !state.items_by_leader_view_id.contains_key(&view_id)
 4606                        }) {
 4607                            anyhow::Ok(true)
 4608                        } else {
 4609                            anyhow::Ok(false)
 4610                        }
 4611                    } else {
 4612                        anyhow::Ok(false)
 4613                    }
 4614                })??;
 4615
 4616                if should_add_view && let Some(view) = update_active_view.view {
 4617                    Self::add_view_from_leader(this.clone(), leader_id, &view, cx).await?
 4618                }
 4619            }
 4620            proto::update_followers::Variant::UpdateView(update_view) => {
 4621                let variant = update_view.variant.context("missing update view variant")?;
 4622                let id = update_view.id.context("missing update view id")?;
 4623                let mut tasks = Vec::new();
 4624                this.update_in(cx, |this, window, cx| {
 4625                    let project = this.project.clone();
 4626                    if let Some(state) = this.follower_states.get(&leader_id.into()) {
 4627                        let view_id = ViewId::from_proto(id.clone())?;
 4628                        if let Some(item) = state.items_by_leader_view_id.get(&view_id) {
 4629                            tasks.push(item.view.apply_update_proto(
 4630                                &project,
 4631                                variant.clone(),
 4632                                window,
 4633                                cx,
 4634                            ));
 4635                        }
 4636                    }
 4637                    anyhow::Ok(())
 4638                })??;
 4639                try_join_all(tasks).await.log_err();
 4640            }
 4641        }
 4642        this.update_in(cx, |this, window, cx| {
 4643            this.leader_updated(leader_id, window, cx)
 4644        })?;
 4645        Ok(())
 4646    }
 4647
 4648    async fn add_view_from_leader(
 4649        this: WeakEntity<Self>,
 4650        leader_id: PeerId,
 4651        view: &proto::View,
 4652        cx: &mut AsyncWindowContext,
 4653    ) -> Result<()> {
 4654        let this = this.upgrade().context("workspace dropped")?;
 4655
 4656        let Some(id) = view.id.clone() else {
 4657            anyhow::bail!("no id for view");
 4658        };
 4659        let id = ViewId::from_proto(id)?;
 4660        let panel_id = view.panel_id.and_then(proto::PanelId::from_i32);
 4661
 4662        let pane = this.update(cx, |this, _cx| {
 4663            let state = this
 4664                .follower_states
 4665                .get(&leader_id.into())
 4666                .context("stopped following")?;
 4667            anyhow::Ok(state.pane().clone())
 4668        })??;
 4669        let existing_item = pane.update_in(cx, |pane, window, cx| {
 4670            let client = this.read(cx).client().clone();
 4671            pane.items().find_map(|item| {
 4672                let item = item.to_followable_item_handle(cx)?;
 4673                if item.remote_id(&client, window, cx) == Some(id) {
 4674                    Some(item)
 4675                } else {
 4676                    None
 4677                }
 4678            })
 4679        })?;
 4680        let item = if let Some(existing_item) = existing_item {
 4681            existing_item
 4682        } else {
 4683            let variant = view.variant.clone();
 4684            anyhow::ensure!(variant.is_some(), "missing view variant");
 4685
 4686            let task = cx.update(|window, cx| {
 4687                FollowableViewRegistry::from_state_proto(this.clone(), id, variant, window, cx)
 4688            })?;
 4689
 4690            let Some(task) = task else {
 4691                anyhow::bail!(
 4692                    "failed to construct view from leader (maybe from a different version of zed?)"
 4693                );
 4694            };
 4695
 4696            let mut new_item = task.await?;
 4697            pane.update_in(cx, |pane, window, cx| {
 4698                let mut item_to_remove = None;
 4699                for (ix, item) in pane.items().enumerate() {
 4700                    if let Some(item) = item.to_followable_item_handle(cx) {
 4701                        match new_item.dedup(item.as_ref(), window, cx) {
 4702                            Some(item::Dedup::KeepExisting) => {
 4703                                new_item =
 4704                                    item.boxed_clone().to_followable_item_handle(cx).unwrap();
 4705                                break;
 4706                            }
 4707                            Some(item::Dedup::ReplaceExisting) => {
 4708                                item_to_remove = Some((ix, item.item_id()));
 4709                                break;
 4710                            }
 4711                            None => {}
 4712                        }
 4713                    }
 4714                }
 4715
 4716                if let Some((ix, id)) = item_to_remove {
 4717                    pane.remove_item(id, false, false, window, cx);
 4718                    pane.add_item(new_item.boxed_clone(), false, false, Some(ix), window, cx);
 4719                }
 4720            })?;
 4721
 4722            new_item
 4723        };
 4724
 4725        this.update_in(cx, |this, window, cx| {
 4726            let state = this.follower_states.get_mut(&leader_id.into())?;
 4727            item.set_leader_id(Some(leader_id.into()), window, cx);
 4728            state.items_by_leader_view_id.insert(
 4729                id,
 4730                FollowerView {
 4731                    view: item,
 4732                    location: panel_id,
 4733                },
 4734            );
 4735
 4736            Some(())
 4737        })?;
 4738
 4739        Ok(())
 4740    }
 4741
 4742    fn handle_agent_location_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 4743        let Some(follower_state) = self.follower_states.get_mut(&CollaboratorId::Agent) else {
 4744            return;
 4745        };
 4746
 4747        if let Some(agent_location) = self.project.read(cx).agent_location() {
 4748            let buffer_entity_id = agent_location.buffer.entity_id();
 4749            let view_id = ViewId {
 4750                creator: CollaboratorId::Agent,
 4751                id: buffer_entity_id.as_u64(),
 4752            };
 4753            follower_state.active_view_id = Some(view_id);
 4754
 4755            let item = match follower_state.items_by_leader_view_id.entry(view_id) {
 4756                hash_map::Entry::Occupied(entry) => Some(entry.into_mut()),
 4757                hash_map::Entry::Vacant(entry) => {
 4758                    let existing_view =
 4759                        follower_state
 4760                            .center_pane
 4761                            .read(cx)
 4762                            .items()
 4763                            .find_map(|item| {
 4764                                let item = item.to_followable_item_handle(cx)?;
 4765                                if item.is_singleton(cx)
 4766                                    && item.project_item_model_ids(cx).as_slice()
 4767                                        == [buffer_entity_id]
 4768                                {
 4769                                    Some(item)
 4770                                } else {
 4771                                    None
 4772                                }
 4773                            });
 4774                    let view = existing_view.or_else(|| {
 4775                        agent_location.buffer.upgrade().and_then(|buffer| {
 4776                            cx.update_default_global(|registry: &mut ProjectItemRegistry, cx| {
 4777                                registry.build_item(buffer, self.project.clone(), None, window, cx)
 4778                            })?
 4779                            .to_followable_item_handle(cx)
 4780                        })
 4781                    });
 4782
 4783                    view.map(|view| {
 4784                        entry.insert(FollowerView {
 4785                            view,
 4786                            location: None,
 4787                        })
 4788                    })
 4789                }
 4790            };
 4791
 4792            if let Some(item) = item {
 4793                item.view
 4794                    .set_leader_id(Some(CollaboratorId::Agent), window, cx);
 4795                item.view
 4796                    .update_agent_location(agent_location.position, window, cx);
 4797            }
 4798        } else {
 4799            follower_state.active_view_id = None;
 4800        }
 4801
 4802        self.leader_updated(CollaboratorId::Agent, window, cx);
 4803    }
 4804
 4805    pub fn update_active_view_for_followers(&mut self, window: &mut Window, cx: &mut App) {
 4806        let mut is_project_item = true;
 4807        let mut update = proto::UpdateActiveView::default();
 4808        if window.is_window_active() {
 4809            let (active_item, panel_id) = self.active_item_for_followers(window, cx);
 4810
 4811            if let Some(item) = active_item
 4812                && item.item_focus_handle(cx).contains_focused(window, cx)
 4813            {
 4814                let leader_id = self
 4815                    .pane_for(&*item)
 4816                    .and_then(|pane| self.leader_for_pane(&pane));
 4817                let leader_peer_id = match leader_id {
 4818                    Some(CollaboratorId::PeerId(peer_id)) => Some(peer_id),
 4819                    Some(CollaboratorId::Agent) | None => None,
 4820                };
 4821
 4822                if let Some(item) = item.to_followable_item_handle(cx) {
 4823                    let id = item
 4824                        .remote_id(&self.app_state.client, window, cx)
 4825                        .map(|id| id.to_proto());
 4826
 4827                    if let Some(id) = id
 4828                        && let Some(variant) = item.to_state_proto(window, cx)
 4829                    {
 4830                        let view = Some(proto::View {
 4831                            id: id.clone(),
 4832                            leader_id: leader_peer_id,
 4833                            variant: Some(variant),
 4834                            panel_id: panel_id.map(|id| id as i32),
 4835                        });
 4836
 4837                        is_project_item = item.is_project_item(window, cx);
 4838                        update = proto::UpdateActiveView {
 4839                            view,
 4840                            // TODO: Remove after version 0.145.x stabilizes.
 4841                            id,
 4842                            leader_id: leader_peer_id,
 4843                        };
 4844                    };
 4845                }
 4846            }
 4847        }
 4848
 4849        let active_view_id = update.view.as_ref().and_then(|view| view.id.as_ref());
 4850        if active_view_id != self.last_active_view_id.as_ref() {
 4851            self.last_active_view_id = active_view_id.cloned();
 4852            self.update_followers(
 4853                is_project_item,
 4854                proto::update_followers::Variant::UpdateActiveView(update),
 4855                window,
 4856                cx,
 4857            );
 4858        }
 4859    }
 4860
 4861    fn active_item_for_followers(
 4862        &self,
 4863        window: &mut Window,
 4864        cx: &mut App,
 4865    ) -> (Option<Box<dyn ItemHandle>>, Option<proto::PanelId>) {
 4866        let mut active_item = None;
 4867        let mut panel_id = None;
 4868        for dock in self.all_docks() {
 4869            if dock.focus_handle(cx).contains_focused(window, cx)
 4870                && let Some(panel) = dock.read(cx).active_panel()
 4871                && let Some(pane) = panel.pane(cx)
 4872                && let Some(item) = pane.read(cx).active_item()
 4873            {
 4874                active_item = Some(item);
 4875                panel_id = panel.remote_id();
 4876                break;
 4877            }
 4878        }
 4879
 4880        if active_item.is_none() {
 4881            active_item = self.active_pane().read(cx).active_item();
 4882        }
 4883        (active_item, panel_id)
 4884    }
 4885
 4886    fn update_followers(
 4887        &self,
 4888        project_only: bool,
 4889        update: proto::update_followers::Variant,
 4890        _: &mut Window,
 4891        cx: &mut App,
 4892    ) -> Option<()> {
 4893        // If this update only applies to for followers in the current project,
 4894        // then skip it unless this project is shared. If it applies to all
 4895        // followers, regardless of project, then set `project_id` to none,
 4896        // indicating that it goes to all followers.
 4897        let project_id = if project_only {
 4898            Some(self.project.read(cx).remote_id()?)
 4899        } else {
 4900            None
 4901        };
 4902        self.app_state().workspace_store.update(cx, |store, cx| {
 4903            store.update_followers(project_id, update, cx)
 4904        })
 4905    }
 4906
 4907    pub fn leader_for_pane(&self, pane: &Entity<Pane>) -> Option<CollaboratorId> {
 4908        self.follower_states.iter().find_map(|(leader_id, state)| {
 4909            if state.center_pane == *pane || state.dock_pane.as_ref() == Some(pane) {
 4910                Some(*leader_id)
 4911            } else {
 4912                None
 4913            }
 4914        })
 4915    }
 4916
 4917    fn leader_updated(
 4918        &mut self,
 4919        leader_id: impl Into<CollaboratorId>,
 4920        window: &mut Window,
 4921        cx: &mut Context<Self>,
 4922    ) -> Option<Box<dyn ItemHandle>> {
 4923        cx.notify();
 4924
 4925        let leader_id = leader_id.into();
 4926        let (panel_id, item) = match leader_id {
 4927            CollaboratorId::PeerId(peer_id) => self.active_item_for_peer(peer_id, window, cx)?,
 4928            CollaboratorId::Agent => (None, self.active_item_for_agent()?),
 4929        };
 4930
 4931        let state = self.follower_states.get(&leader_id)?;
 4932        let mut transfer_focus = state.center_pane.read(cx).has_focus(window, cx);
 4933        let pane;
 4934        if let Some(panel_id) = panel_id {
 4935            pane = self
 4936                .activate_panel_for_proto_id(panel_id, window, cx)?
 4937                .pane(cx)?;
 4938            let state = self.follower_states.get_mut(&leader_id)?;
 4939            state.dock_pane = Some(pane.clone());
 4940        } else {
 4941            pane = state.center_pane.clone();
 4942            let state = self.follower_states.get_mut(&leader_id)?;
 4943            if let Some(dock_pane) = state.dock_pane.take() {
 4944                transfer_focus |= dock_pane.focus_handle(cx).contains_focused(window, cx);
 4945            }
 4946        }
 4947
 4948        pane.update(cx, |pane, cx| {
 4949            let focus_active_item = pane.has_focus(window, cx) || transfer_focus;
 4950            if let Some(index) = pane.index_for_item(item.as_ref()) {
 4951                pane.activate_item(index, false, false, window, cx);
 4952            } else {
 4953                pane.add_item(item.boxed_clone(), false, false, None, window, cx)
 4954            }
 4955
 4956            if focus_active_item {
 4957                pane.focus_active_item(window, cx)
 4958            }
 4959        });
 4960
 4961        Some(item)
 4962    }
 4963
 4964    fn active_item_for_agent(&self) -> Option<Box<dyn ItemHandle>> {
 4965        let state = self.follower_states.get(&CollaboratorId::Agent)?;
 4966        let active_view_id = state.active_view_id?;
 4967        Some(
 4968            state
 4969                .items_by_leader_view_id
 4970                .get(&active_view_id)?
 4971                .view
 4972                .boxed_clone(),
 4973        )
 4974    }
 4975
 4976    fn active_item_for_peer(
 4977        &self,
 4978        peer_id: PeerId,
 4979        window: &mut Window,
 4980        cx: &mut Context<Self>,
 4981    ) -> Option<(Option<PanelId>, Box<dyn ItemHandle>)> {
 4982        let call = self.active_call()?;
 4983        let room = call.read(cx).room()?.read(cx);
 4984        let participant = room.remote_participant_for_peer_id(peer_id)?;
 4985        let leader_in_this_app;
 4986        let leader_in_this_project;
 4987        match participant.location {
 4988            call::ParticipantLocation::SharedProject { project_id } => {
 4989                leader_in_this_app = true;
 4990                leader_in_this_project = Some(project_id) == self.project.read(cx).remote_id();
 4991            }
 4992            call::ParticipantLocation::UnsharedProject => {
 4993                leader_in_this_app = true;
 4994                leader_in_this_project = false;
 4995            }
 4996            call::ParticipantLocation::External => {
 4997                leader_in_this_app = false;
 4998                leader_in_this_project = false;
 4999            }
 5000        };
 5001        let state = self.follower_states.get(&peer_id.into())?;
 5002        let mut item_to_activate = None;
 5003        if let (Some(active_view_id), true) = (state.active_view_id, leader_in_this_app) {
 5004            if let Some(item) = state.items_by_leader_view_id.get(&active_view_id)
 5005                && (leader_in_this_project || !item.view.is_project_item(window, cx))
 5006            {
 5007                item_to_activate = Some((item.location, item.view.boxed_clone()));
 5008            }
 5009        } else if let Some(shared_screen) =
 5010            self.shared_screen_for_peer(peer_id, &state.center_pane, window, cx)
 5011        {
 5012            item_to_activate = Some((None, Box::new(shared_screen)));
 5013        }
 5014        item_to_activate
 5015    }
 5016
 5017    fn shared_screen_for_peer(
 5018        &self,
 5019        peer_id: PeerId,
 5020        pane: &Entity<Pane>,
 5021        window: &mut Window,
 5022        cx: &mut App,
 5023    ) -> Option<Entity<SharedScreen>> {
 5024        let call = self.active_call()?;
 5025        let room = call.read(cx).room()?.clone();
 5026        let participant = room.read(cx).remote_participant_for_peer_id(peer_id)?;
 5027        let track = participant.video_tracks.values().next()?.clone();
 5028        let user = participant.user.clone();
 5029
 5030        for item in pane.read(cx).items_of_type::<SharedScreen>() {
 5031            if item.read(cx).peer_id == peer_id {
 5032                return Some(item);
 5033            }
 5034        }
 5035
 5036        Some(cx.new(|cx| SharedScreen::new(track, peer_id, user.clone(), room.clone(), window, cx)))
 5037    }
 5038
 5039    pub fn on_window_activation_changed(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5040        if window.is_window_active() {
 5041            self.update_active_view_for_followers(window, cx);
 5042
 5043            if let Some(database_id) = self.database_id {
 5044                cx.background_spawn(persistence::DB.update_timestamp(database_id))
 5045                    .detach();
 5046            }
 5047        } else {
 5048            for pane in &self.panes {
 5049                pane.update(cx, |pane, cx| {
 5050                    if let Some(item) = pane.active_item() {
 5051                        item.workspace_deactivated(window, cx);
 5052                    }
 5053                    for item in pane.items() {
 5054                        if matches!(
 5055                            item.workspace_settings(cx).autosave,
 5056                            AutosaveSetting::OnWindowChange | AutosaveSetting::OnFocusChange
 5057                        ) {
 5058                            Pane::autosave_item(item.as_ref(), self.project.clone(), window, cx)
 5059                                .detach_and_log_err(cx);
 5060                        }
 5061                    }
 5062                });
 5063            }
 5064        }
 5065    }
 5066
 5067    pub fn active_call(&self) -> Option<&Entity<ActiveCall>> {
 5068        self.active_call.as_ref().map(|(call, _)| call)
 5069    }
 5070
 5071    fn on_active_call_event(
 5072        &mut self,
 5073        _: &Entity<ActiveCall>,
 5074        event: &call::room::Event,
 5075        window: &mut Window,
 5076        cx: &mut Context<Self>,
 5077    ) {
 5078        match event {
 5079            call::room::Event::ParticipantLocationChanged { participant_id }
 5080            | call::room::Event::RemoteVideoTracksChanged { participant_id } => {
 5081                self.leader_updated(participant_id, window, cx);
 5082            }
 5083            _ => {}
 5084        }
 5085    }
 5086
 5087    pub fn database_id(&self) -> Option<WorkspaceId> {
 5088        self.database_id
 5089    }
 5090
 5091    pub fn session_id(&self) -> Option<String> {
 5092        self.session_id.clone()
 5093    }
 5094
 5095    pub fn root_paths(&self, cx: &App) -> Vec<Arc<Path>> {
 5096        let project = self.project().read(cx);
 5097        project
 5098            .visible_worktrees(cx)
 5099            .map(|worktree| worktree.read(cx).abs_path())
 5100            .collect::<Vec<_>>()
 5101    }
 5102
 5103    fn remove_panes(&mut self, member: Member, window: &mut Window, cx: &mut Context<Workspace>) {
 5104        match member {
 5105            Member::Axis(PaneAxis { members, .. }) => {
 5106                for child in members.iter() {
 5107                    self.remove_panes(child.clone(), window, cx)
 5108                }
 5109            }
 5110            Member::Pane(pane) => {
 5111                self.force_remove_pane(&pane, &None, window, cx);
 5112            }
 5113        }
 5114    }
 5115
 5116    fn remove_from_session(&mut self, window: &mut Window, cx: &mut App) -> Task<()> {
 5117        self.session_id.take();
 5118        self.serialize_workspace_internal(window, cx)
 5119    }
 5120
 5121    fn force_remove_pane(
 5122        &mut self,
 5123        pane: &Entity<Pane>,
 5124        focus_on: &Option<Entity<Pane>>,
 5125        window: &mut Window,
 5126        cx: &mut Context<Workspace>,
 5127    ) {
 5128        self.panes.retain(|p| p != pane);
 5129        if let Some(focus_on) = focus_on {
 5130            focus_on.update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5131        } else if self.active_pane() == pane {
 5132            self.panes
 5133                .last()
 5134                .unwrap()
 5135                .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5136        }
 5137        if self.last_active_center_pane == Some(pane.downgrade()) {
 5138            self.last_active_center_pane = None;
 5139        }
 5140        cx.notify();
 5141    }
 5142
 5143    fn serialize_workspace(&mut self, window: &mut Window, cx: &mut Context<Self>) {
 5144        if self._schedule_serialize_workspace.is_none() {
 5145            self._schedule_serialize_workspace =
 5146                Some(cx.spawn_in(window, async move |this, cx| {
 5147                    cx.background_executor()
 5148                        .timer(SERIALIZATION_THROTTLE_TIME)
 5149                        .await;
 5150                    this.update_in(cx, |this, window, cx| {
 5151                        this.serialize_workspace_internal(window, cx).detach();
 5152                        this._schedule_serialize_workspace.take();
 5153                    })
 5154                    .log_err();
 5155                }));
 5156        }
 5157    }
 5158
 5159    fn serialize_workspace_internal(&self, window: &mut Window, cx: &mut App) -> Task<()> {
 5160        let Some(database_id) = self.database_id() else {
 5161            return Task::ready(());
 5162        };
 5163
 5164        fn serialize_pane_handle(
 5165            pane_handle: &Entity<Pane>,
 5166            window: &mut Window,
 5167            cx: &mut App,
 5168        ) -> SerializedPane {
 5169            let (items, active, pinned_count) = {
 5170                let pane = pane_handle.read(cx);
 5171                let active_item_id = pane.active_item().map(|item| item.item_id());
 5172                (
 5173                    pane.items()
 5174                        .filter_map(|handle| {
 5175                            let handle = handle.to_serializable_item_handle(cx)?;
 5176
 5177                            Some(SerializedItem {
 5178                                kind: Arc::from(handle.serialized_item_kind()),
 5179                                item_id: handle.item_id().as_u64(),
 5180                                active: Some(handle.item_id()) == active_item_id,
 5181                                preview: pane.is_active_preview_item(handle.item_id()),
 5182                            })
 5183                        })
 5184                        .collect::<Vec<_>>(),
 5185                    pane.has_focus(window, cx),
 5186                    pane.pinned_count(),
 5187                )
 5188            };
 5189
 5190            SerializedPane::new(items, active, pinned_count)
 5191        }
 5192
 5193        fn build_serialized_pane_group(
 5194            pane_group: &Member,
 5195            window: &mut Window,
 5196            cx: &mut App,
 5197        ) -> SerializedPaneGroup {
 5198            match pane_group {
 5199                Member::Axis(PaneAxis {
 5200                    axis,
 5201                    members,
 5202                    flexes,
 5203                    bounding_boxes: _,
 5204                }) => SerializedPaneGroup::Group {
 5205                    axis: SerializedAxis(*axis),
 5206                    children: members
 5207                        .iter()
 5208                        .map(|member| build_serialized_pane_group(member, window, cx))
 5209                        .collect::<Vec<_>>(),
 5210                    flexes: Some(flexes.lock().clone()),
 5211                },
 5212                Member::Pane(pane_handle) => {
 5213                    SerializedPaneGroup::Pane(serialize_pane_handle(pane_handle, window, cx))
 5214                }
 5215            }
 5216        }
 5217
 5218        fn build_serialized_docks(
 5219            this: &Workspace,
 5220            window: &mut Window,
 5221            cx: &mut App,
 5222        ) -> DockStructure {
 5223            let left_dock = this.left_dock.read(cx);
 5224            let left_visible = left_dock.is_open();
 5225            let left_active_panel = left_dock
 5226                .active_panel()
 5227                .map(|panel| panel.persistent_name().to_string());
 5228            let left_dock_zoom = left_dock
 5229                .active_panel()
 5230                .map(|panel| panel.is_zoomed(window, cx))
 5231                .unwrap_or(false);
 5232
 5233            let right_dock = this.right_dock.read(cx);
 5234            let right_visible = right_dock.is_open();
 5235            let right_active_panel = right_dock
 5236                .active_panel()
 5237                .map(|panel| panel.persistent_name().to_string());
 5238            let right_dock_zoom = right_dock
 5239                .active_panel()
 5240                .map(|panel| panel.is_zoomed(window, cx))
 5241                .unwrap_or(false);
 5242
 5243            let bottom_dock = this.bottom_dock.read(cx);
 5244            let bottom_visible = bottom_dock.is_open();
 5245            let bottom_active_panel = bottom_dock
 5246                .active_panel()
 5247                .map(|panel| panel.persistent_name().to_string());
 5248            let bottom_dock_zoom = bottom_dock
 5249                .active_panel()
 5250                .map(|panel| panel.is_zoomed(window, cx))
 5251                .unwrap_or(false);
 5252
 5253            DockStructure {
 5254                left: DockData {
 5255                    visible: left_visible,
 5256                    active_panel: left_active_panel,
 5257                    zoom: left_dock_zoom,
 5258                },
 5259                right: DockData {
 5260                    visible: right_visible,
 5261                    active_panel: right_active_panel,
 5262                    zoom: right_dock_zoom,
 5263                },
 5264                bottom: DockData {
 5265                    visible: bottom_visible,
 5266                    active_panel: bottom_active_panel,
 5267                    zoom: bottom_dock_zoom,
 5268                },
 5269            }
 5270        }
 5271
 5272        match self.serialize_workspace_location(cx) {
 5273            WorkspaceLocation::Location(location, paths) => {
 5274                let breakpoints = self.project.update(cx, |project, cx| {
 5275                    project
 5276                        .breakpoint_store()
 5277                        .read(cx)
 5278                        .all_source_breakpoints(cx)
 5279                });
 5280                let user_toolchains = self
 5281                    .project
 5282                    .read(cx)
 5283                    .user_toolchains(cx)
 5284                    .unwrap_or_default();
 5285
 5286                let center_group = build_serialized_pane_group(&self.center.root, window, cx);
 5287                let docks = build_serialized_docks(self, window, cx);
 5288                let window_bounds = Some(SerializedWindowBounds(window.window_bounds()));
 5289
 5290                let serialized_workspace = SerializedWorkspace {
 5291                    id: database_id,
 5292                    location,
 5293                    paths,
 5294                    center_group,
 5295                    window_bounds,
 5296                    display: Default::default(),
 5297                    docks,
 5298                    centered_layout: self.centered_layout,
 5299                    session_id: self.session_id.clone(),
 5300                    breakpoints,
 5301                    window_id: Some(window.window_handle().window_id().as_u64()),
 5302                    user_toolchains,
 5303                };
 5304
 5305                window.spawn(cx, async move |_| {
 5306                    persistence::DB.save_workspace(serialized_workspace).await;
 5307                })
 5308            }
 5309            WorkspaceLocation::DetachFromSession => window.spawn(cx, async move |_| {
 5310                persistence::DB
 5311                    .set_session_id(database_id, None)
 5312                    .await
 5313                    .log_err();
 5314            }),
 5315            WorkspaceLocation::None => Task::ready(()),
 5316        }
 5317    }
 5318
 5319    fn serialize_workspace_location(&self, cx: &App) -> WorkspaceLocation {
 5320        let paths = PathList::new(&self.root_paths(cx));
 5321        if let Some(connection) = self.project.read(cx).remote_connection_options(cx) {
 5322            WorkspaceLocation::Location(SerializedWorkspaceLocation::Remote(connection), paths)
 5323        } else if self.project.read(cx).is_local() {
 5324            if !paths.is_empty() {
 5325                WorkspaceLocation::Location(SerializedWorkspaceLocation::Local, paths)
 5326            } else {
 5327                WorkspaceLocation::DetachFromSession
 5328            }
 5329        } else {
 5330            WorkspaceLocation::None
 5331        }
 5332    }
 5333
 5334    fn update_history(&self, cx: &mut App) {
 5335        let Some(id) = self.database_id() else {
 5336            return;
 5337        };
 5338        if !self.project.read(cx).is_local() {
 5339            return;
 5340        }
 5341        if let Some(manager) = HistoryManager::global(cx) {
 5342            let paths = PathList::new(&self.root_paths(cx));
 5343            manager.update(cx, |this, cx| {
 5344                this.update_history(id, HistoryManagerEntry::new(id, &paths), cx);
 5345            });
 5346        }
 5347    }
 5348
 5349    async fn serialize_items(
 5350        this: &WeakEntity<Self>,
 5351        items_rx: UnboundedReceiver<Box<dyn SerializableItemHandle>>,
 5352        cx: &mut AsyncWindowContext,
 5353    ) -> Result<()> {
 5354        const CHUNK_SIZE: usize = 200;
 5355
 5356        let mut serializable_items = items_rx.ready_chunks(CHUNK_SIZE);
 5357
 5358        while let Some(items_received) = serializable_items.next().await {
 5359            let unique_items =
 5360                items_received
 5361                    .into_iter()
 5362                    .fold(HashMap::default(), |mut acc, item| {
 5363                        acc.entry(item.item_id()).or_insert(item);
 5364                        acc
 5365                    });
 5366
 5367            // We use into_iter() here so that the references to the items are moved into
 5368            // the tasks and not kept alive while we're sleeping.
 5369            for (_, item) in unique_items.into_iter() {
 5370                if let Ok(Some(task)) = this.update_in(cx, |workspace, window, cx| {
 5371                    item.serialize(workspace, false, window, cx)
 5372                }) {
 5373                    cx.background_spawn(async move { task.await.log_err() })
 5374                        .detach();
 5375                }
 5376            }
 5377
 5378            cx.background_executor()
 5379                .timer(SERIALIZATION_THROTTLE_TIME)
 5380                .await;
 5381        }
 5382
 5383        Ok(())
 5384    }
 5385
 5386    pub(crate) fn enqueue_item_serialization(
 5387        &mut self,
 5388        item: Box<dyn SerializableItemHandle>,
 5389    ) -> Result<()> {
 5390        self.serializable_items_tx
 5391            .unbounded_send(item)
 5392            .map_err(|err| anyhow!("failed to send serializable item over channel: {err}"))
 5393    }
 5394
 5395    pub(crate) fn load_workspace(
 5396        serialized_workspace: SerializedWorkspace,
 5397        paths_to_open: Vec<Option<ProjectPath>>,
 5398        window: &mut Window,
 5399        cx: &mut Context<Workspace>,
 5400    ) -> Task<Result<Vec<Option<Box<dyn ItemHandle>>>>> {
 5401        cx.spawn_in(window, async move |workspace, cx| {
 5402            let project = workspace.read_with(cx, |workspace, _| workspace.project().clone())?;
 5403
 5404            let mut center_group = None;
 5405            let mut center_items = None;
 5406
 5407            // Traverse the splits tree and add to things
 5408            if let Some((group, active_pane, items)) = serialized_workspace
 5409                .center_group
 5410                .deserialize(&project, serialized_workspace.id, workspace.clone(), cx)
 5411                .await
 5412            {
 5413                center_items = Some(items);
 5414                center_group = Some((group, active_pane))
 5415            }
 5416
 5417            let mut items_by_project_path = HashMap::default();
 5418            let mut item_ids_by_kind = HashMap::default();
 5419            let mut all_deserialized_items = Vec::default();
 5420            cx.update(|_, cx| {
 5421                for item in center_items.unwrap_or_default().into_iter().flatten() {
 5422                    if let Some(serializable_item_handle) = item.to_serializable_item_handle(cx) {
 5423                        item_ids_by_kind
 5424                            .entry(serializable_item_handle.serialized_item_kind())
 5425                            .or_insert(Vec::new())
 5426                            .push(item.item_id().as_u64() as ItemId);
 5427                    }
 5428
 5429                    if let Some(project_path) = item.project_path(cx) {
 5430                        items_by_project_path.insert(project_path, item.clone());
 5431                    }
 5432                    all_deserialized_items.push(item);
 5433                }
 5434            })?;
 5435
 5436            let opened_items = paths_to_open
 5437                .into_iter()
 5438                .map(|path_to_open| {
 5439                    path_to_open
 5440                        .and_then(|path_to_open| items_by_project_path.remove(&path_to_open))
 5441                })
 5442                .collect::<Vec<_>>();
 5443
 5444            // Remove old panes from workspace panes list
 5445            workspace.update_in(cx, |workspace, window, cx| {
 5446                if let Some((center_group, active_pane)) = center_group {
 5447                    workspace.remove_panes(workspace.center.root.clone(), window, cx);
 5448
 5449                    // Swap workspace center group
 5450                    workspace.center = PaneGroup::with_root(center_group);
 5451                    if let Some(active_pane) = active_pane {
 5452                        workspace.set_active_pane(&active_pane, window, cx);
 5453                        cx.focus_self(window);
 5454                    } else {
 5455                        workspace.set_active_pane(&workspace.center.first_pane(), window, cx);
 5456                    }
 5457                }
 5458
 5459                let docks = serialized_workspace.docks;
 5460
 5461                for (dock, serialized_dock) in [
 5462                    (&mut workspace.right_dock, docks.right),
 5463                    (&mut workspace.left_dock, docks.left),
 5464                    (&mut workspace.bottom_dock, docks.bottom),
 5465                ]
 5466                .iter_mut()
 5467                {
 5468                    dock.update(cx, |dock, cx| {
 5469                        dock.serialized_dock = Some(serialized_dock.clone());
 5470                        dock.restore_state(window, cx);
 5471                    });
 5472                }
 5473
 5474                cx.notify();
 5475            })?;
 5476
 5477            let _ = project
 5478                .update(cx, |project, cx| {
 5479                    project
 5480                        .breakpoint_store()
 5481                        .update(cx, |breakpoint_store, cx| {
 5482                            breakpoint_store
 5483                                .with_serialized_breakpoints(serialized_workspace.breakpoints, cx)
 5484                        })
 5485                })?
 5486                .await;
 5487
 5488            // Clean up all the items that have _not_ been loaded. Our ItemIds aren't stable. That means
 5489            // after loading the items, we might have different items and in order to avoid
 5490            // the database filling up, we delete items that haven't been loaded now.
 5491            //
 5492            // The items that have been loaded, have been saved after they've been added to the workspace.
 5493            let clean_up_tasks = workspace.update_in(cx, |_, window, cx| {
 5494                item_ids_by_kind
 5495                    .into_iter()
 5496                    .map(|(item_kind, loaded_items)| {
 5497                        SerializableItemRegistry::cleanup(
 5498                            item_kind,
 5499                            serialized_workspace.id,
 5500                            loaded_items,
 5501                            window,
 5502                            cx,
 5503                        )
 5504                        .log_err()
 5505                    })
 5506                    .collect::<Vec<_>>()
 5507            })?;
 5508
 5509            futures::future::join_all(clean_up_tasks).await;
 5510
 5511            workspace
 5512                .update_in(cx, |workspace, window, cx| {
 5513                    // Serialize ourself to make sure our timestamps and any pane / item changes are replicated
 5514                    workspace.serialize_workspace_internal(window, cx).detach();
 5515
 5516                    // Ensure that we mark the window as edited if we did load dirty items
 5517                    workspace.update_window_edited(window, cx);
 5518                })
 5519                .ok();
 5520
 5521            Ok(opened_items)
 5522        })
 5523    }
 5524
 5525    fn actions(&self, div: Div, window: &mut Window, cx: &mut Context<Self>) -> Div {
 5526        self.add_workspace_actions_listeners(div, window, cx)
 5527            .on_action(cx.listener(Self::close_inactive_items_and_panes))
 5528            .on_action(cx.listener(Self::close_all_items_and_panes))
 5529            .on_action(cx.listener(Self::save_all))
 5530            .on_action(cx.listener(Self::send_keystrokes))
 5531            .on_action(cx.listener(Self::add_folder_to_project))
 5532            .on_action(cx.listener(Self::follow_next_collaborator))
 5533            .on_action(cx.listener(Self::close_window))
 5534            .on_action(cx.listener(Self::activate_pane_at_index))
 5535            .on_action(cx.listener(Self::move_item_to_pane_at_index))
 5536            .on_action(cx.listener(Self::move_focused_panel_to_next_position))
 5537            .on_action(cx.listener(Self::toggle_edit_predictions_all_files))
 5538            .on_action(cx.listener(|workspace, _: &Unfollow, window, cx| {
 5539                let pane = workspace.active_pane().clone();
 5540                workspace.unfollow_in_pane(&pane, window, cx);
 5541            }))
 5542            .on_action(cx.listener(|workspace, action: &Save, window, cx| {
 5543                workspace
 5544                    .save_active_item(action.save_intent.unwrap_or(SaveIntent::Save), window, cx)
 5545                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5546            }))
 5547            .on_action(cx.listener(|workspace, _: &SaveWithoutFormat, window, cx| {
 5548                workspace
 5549                    .save_active_item(SaveIntent::SaveWithoutFormat, window, cx)
 5550                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5551            }))
 5552            .on_action(cx.listener(|workspace, _: &SaveAs, window, cx| {
 5553                workspace
 5554                    .save_active_item(SaveIntent::SaveAs, window, cx)
 5555                    .detach_and_prompt_err("Failed to save", window, cx, |_, _, _| None);
 5556            }))
 5557            .on_action(
 5558                cx.listener(|workspace, _: &ActivatePreviousPane, window, cx| {
 5559                    workspace.activate_previous_pane(window, cx)
 5560                }),
 5561            )
 5562            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5563                workspace.activate_next_pane(window, cx)
 5564            }))
 5565            .on_action(
 5566                cx.listener(|workspace, _: &ActivateNextWindow, _window, cx| {
 5567                    workspace.activate_next_window(cx)
 5568                }),
 5569            )
 5570            .on_action(
 5571                cx.listener(|workspace, _: &ActivatePreviousWindow, _window, cx| {
 5572                    workspace.activate_previous_window(cx)
 5573                }),
 5574            )
 5575            .on_action(cx.listener(|workspace, _: &ActivatePaneLeft, window, cx| {
 5576                workspace.activate_pane_in_direction(SplitDirection::Left, window, cx)
 5577            }))
 5578            .on_action(cx.listener(|workspace, _: &ActivatePaneRight, window, cx| {
 5579                workspace.activate_pane_in_direction(SplitDirection::Right, window, cx)
 5580            }))
 5581            .on_action(cx.listener(|workspace, _: &ActivatePaneUp, window, cx| {
 5582                workspace.activate_pane_in_direction(SplitDirection::Up, window, cx)
 5583            }))
 5584            .on_action(cx.listener(|workspace, _: &ActivatePaneDown, window, cx| {
 5585                workspace.activate_pane_in_direction(SplitDirection::Down, window, cx)
 5586            }))
 5587            .on_action(cx.listener(|workspace, _: &ActivateNextPane, window, cx| {
 5588                workspace.activate_next_pane(window, cx)
 5589            }))
 5590            .on_action(cx.listener(
 5591                |workspace, action: &MoveItemToPaneInDirection, window, cx| {
 5592                    workspace.move_item_to_pane_in_direction(action, window, cx)
 5593                },
 5594            ))
 5595            .on_action(cx.listener(|workspace, _: &SwapPaneLeft, _, cx| {
 5596                workspace.swap_pane_in_direction(SplitDirection::Left, cx)
 5597            }))
 5598            .on_action(cx.listener(|workspace, _: &SwapPaneRight, _, cx| {
 5599                workspace.swap_pane_in_direction(SplitDirection::Right, cx)
 5600            }))
 5601            .on_action(cx.listener(|workspace, _: &SwapPaneUp, _, cx| {
 5602                workspace.swap_pane_in_direction(SplitDirection::Up, cx)
 5603            }))
 5604            .on_action(cx.listener(|workspace, _: &SwapPaneDown, _, cx| {
 5605                workspace.swap_pane_in_direction(SplitDirection::Down, cx)
 5606            }))
 5607            .on_action(cx.listener(|this, _: &ToggleLeftDock, window, cx| {
 5608                this.toggle_dock(DockPosition::Left, window, cx);
 5609            }))
 5610            .on_action(cx.listener(
 5611                |workspace: &mut Workspace, _: &ToggleRightDock, window, cx| {
 5612                    workspace.toggle_dock(DockPosition::Right, window, cx);
 5613                },
 5614            ))
 5615            .on_action(cx.listener(
 5616                |workspace: &mut Workspace, _: &ToggleBottomDock, window, cx| {
 5617                    workspace.toggle_dock(DockPosition::Bottom, window, cx);
 5618                },
 5619            ))
 5620            .on_action(cx.listener(
 5621                |workspace: &mut Workspace, _: &CloseActiveDock, window, cx| {
 5622                    if !workspace.close_active_dock(window, cx) {
 5623                        cx.propagate();
 5624                    }
 5625                },
 5626            ))
 5627            .on_action(
 5628                cx.listener(|workspace: &mut Workspace, _: &CloseAllDocks, window, cx| {
 5629                    workspace.close_all_docks(window, cx);
 5630                }),
 5631            )
 5632            .on_action(cx.listener(
 5633                |workspace: &mut Workspace, _: &ClearAllNotifications, _, cx| {
 5634                    workspace.clear_all_notifications(cx);
 5635                },
 5636            ))
 5637            .on_action(cx.listener(
 5638                |workspace: &mut Workspace, _: &SuppressNotification, _, cx| {
 5639                    if let Some((notification_id, _)) = workspace.notifications.pop() {
 5640                        workspace.suppress_notification(&notification_id, cx);
 5641                    }
 5642                },
 5643            ))
 5644            .on_action(cx.listener(
 5645                |workspace: &mut Workspace, _: &ReopenClosedItem, window, cx| {
 5646                    workspace.reopen_closed_item(window, cx).detach();
 5647                },
 5648            ))
 5649            .on_action(cx.listener(
 5650                |workspace: &mut Workspace, _: &ResetActiveDockSize, window, cx| {
 5651                    for dock in workspace.all_docks() {
 5652                        if dock.focus_handle(cx).contains_focused(window, cx) {
 5653                            let Some(panel) = dock.read(cx).active_panel() else {
 5654                                return;
 5655                            };
 5656
 5657                            // Set to `None`, then the size will fall back to the default.
 5658                            panel.clone().set_size(None, window, cx);
 5659
 5660                            return;
 5661                        }
 5662                    }
 5663                },
 5664            ))
 5665            .on_action(cx.listener(
 5666                |workspace: &mut Workspace, _: &ResetOpenDocksSize, window, cx| {
 5667                    for dock in workspace.all_docks() {
 5668                        if let Some(panel) = dock.read(cx).visible_panel() {
 5669                            // Set to `None`, then the size will fall back to the default.
 5670                            panel.clone().set_size(None, window, cx);
 5671                        }
 5672                    }
 5673                },
 5674            ))
 5675            .on_action(cx.listener(
 5676                |workspace: &mut Workspace, act: &IncreaseActiveDockSize, window, cx| {
 5677                    adjust_active_dock_size_by_px(
 5678                        px_with_ui_font_fallback(act.px, cx),
 5679                        workspace,
 5680                        window,
 5681                        cx,
 5682                    );
 5683                },
 5684            ))
 5685            .on_action(cx.listener(
 5686                |workspace: &mut Workspace, act: &DecreaseActiveDockSize, window, cx| {
 5687                    adjust_active_dock_size_by_px(
 5688                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5689                        workspace,
 5690                        window,
 5691                        cx,
 5692                    );
 5693                },
 5694            ))
 5695            .on_action(cx.listener(
 5696                |workspace: &mut Workspace, act: &IncreaseOpenDocksSize, window, cx| {
 5697                    adjust_open_docks_size_by_px(
 5698                        px_with_ui_font_fallback(act.px, cx),
 5699                        workspace,
 5700                        window,
 5701                        cx,
 5702                    );
 5703                },
 5704            ))
 5705            .on_action(cx.listener(
 5706                |workspace: &mut Workspace, act: &DecreaseOpenDocksSize, window, cx| {
 5707                    adjust_open_docks_size_by_px(
 5708                        px_with_ui_font_fallback(act.px, cx) * -1.,
 5709                        workspace,
 5710                        window,
 5711                        cx,
 5712                    );
 5713                },
 5714            ))
 5715            .on_action(cx.listener(Workspace::toggle_centered_layout))
 5716            .on_action(cx.listener(Workspace::cancel))
 5717    }
 5718
 5719    #[cfg(any(test, feature = "test-support"))]
 5720    pub fn test_new(project: Entity<Project>, window: &mut Window, cx: &mut Context<Self>) -> Self {
 5721        use node_runtime::NodeRuntime;
 5722        use session::Session;
 5723
 5724        let client = project.read(cx).client();
 5725        let user_store = project.read(cx).user_store();
 5726        let workspace_store = cx.new(|cx| WorkspaceStore::new(client.clone(), cx));
 5727        let session = cx.new(|cx| AppSession::new(Session::test(), cx));
 5728        window.activate_window();
 5729        let app_state = Arc::new(AppState {
 5730            languages: project.read(cx).languages().clone(),
 5731            workspace_store,
 5732            client,
 5733            user_store,
 5734            fs: project.read(cx).fs().clone(),
 5735            build_window_options: |_, _| Default::default(),
 5736            node_runtime: NodeRuntime::unavailable(),
 5737            session,
 5738        });
 5739        let workspace = Self::new(Default::default(), project, app_state, window, cx);
 5740        workspace
 5741            .active_pane
 5742            .update(cx, |pane, cx| window.focus(&pane.focus_handle(cx)));
 5743        workspace
 5744    }
 5745
 5746    pub fn register_action<A: Action>(
 5747        &mut self,
 5748        callback: impl Fn(&mut Self, &A, &mut Window, &mut Context<Self>) + 'static,
 5749    ) -> &mut Self {
 5750        let callback = Arc::new(callback);
 5751
 5752        self.workspace_actions.push(Box::new(move |div, _, _, cx| {
 5753            let callback = callback.clone();
 5754            div.on_action(cx.listener(move |workspace, event, window, cx| {
 5755                (callback)(workspace, event, window, cx)
 5756            }))
 5757        }));
 5758        self
 5759    }
 5760    pub fn register_action_renderer(
 5761        &mut self,
 5762        callback: impl Fn(Div, &Workspace, &mut Window, &mut Context<Self>) -> Div + 'static,
 5763    ) -> &mut Self {
 5764        self.workspace_actions.push(Box::new(callback));
 5765        self
 5766    }
 5767
 5768    fn add_workspace_actions_listeners(
 5769        &self,
 5770        mut div: Div,
 5771        window: &mut Window,
 5772        cx: &mut Context<Self>,
 5773    ) -> Div {
 5774        for action in self.workspace_actions.iter() {
 5775            div = (action)(div, self, window, cx)
 5776        }
 5777        div
 5778    }
 5779
 5780    pub fn has_active_modal(&self, _: &mut Window, cx: &mut App) -> bool {
 5781        self.modal_layer.read(cx).has_active_modal()
 5782    }
 5783
 5784    pub fn active_modal<V: ManagedView + 'static>(&self, cx: &App) -> Option<Entity<V>> {
 5785        self.modal_layer.read(cx).active_modal()
 5786    }
 5787
 5788    pub fn toggle_modal<V: ModalView, B>(&mut self, window: &mut Window, cx: &mut App, build: B)
 5789    where
 5790        B: FnOnce(&mut Window, &mut Context<V>) -> V,
 5791    {
 5792        self.modal_layer.update(cx, |modal_layer, cx| {
 5793            modal_layer.toggle_modal(window, cx, build)
 5794        })
 5795    }
 5796
 5797    pub fn toggle_status_toast<V: ToastView>(&mut self, entity: Entity<V>, cx: &mut App) {
 5798        self.toast_layer
 5799            .update(cx, |toast_layer, cx| toast_layer.toggle_toast(cx, entity))
 5800    }
 5801
 5802    pub fn toggle_centered_layout(
 5803        &mut self,
 5804        _: &ToggleCenteredLayout,
 5805        _: &mut Window,
 5806        cx: &mut Context<Self>,
 5807    ) {
 5808        self.centered_layout = !self.centered_layout;
 5809        if let Some(database_id) = self.database_id() {
 5810            cx.background_spawn(DB.set_centered_layout(database_id, self.centered_layout))
 5811                .detach_and_log_err(cx);
 5812        }
 5813        cx.notify();
 5814    }
 5815
 5816    fn adjust_padding(padding: Option<f32>) -> f32 {
 5817        padding
 5818            .unwrap_or(Self::DEFAULT_PADDING)
 5819            .clamp(0.0, Self::MAX_PADDING)
 5820    }
 5821
 5822    fn render_dock(
 5823        &self,
 5824        position: DockPosition,
 5825        dock: &Entity<Dock>,
 5826        window: &mut Window,
 5827        cx: &mut App,
 5828    ) -> Option<Div> {
 5829        if self.zoomed_position == Some(position) {
 5830            return None;
 5831        }
 5832
 5833        let leader_border = dock.read(cx).active_panel().and_then(|panel| {
 5834            let pane = panel.pane(cx)?;
 5835            let follower_states = &self.follower_states;
 5836            leader_border_for_pane(follower_states, &pane, window, cx)
 5837        });
 5838
 5839        Some(
 5840            div()
 5841                .flex()
 5842                .flex_none()
 5843                .overflow_hidden()
 5844                .child(dock.clone())
 5845                .children(leader_border),
 5846        )
 5847    }
 5848
 5849    pub fn for_window(window: &mut Window, _: &mut App) -> Option<Entity<Workspace>> {
 5850        window.root().flatten()
 5851    }
 5852
 5853    pub fn zoomed_item(&self) -> Option<&AnyWeakView> {
 5854        self.zoomed.as_ref()
 5855    }
 5856
 5857    pub fn activate_next_window(&mut self, cx: &mut Context<Self>) {
 5858        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 5859            return;
 5860        };
 5861        let windows = cx.windows();
 5862        let next_window =
 5863            SystemWindowTabController::get_next_tab_group_window(cx, current_window_id).or_else(
 5864                || {
 5865                    windows
 5866                        .iter()
 5867                        .cycle()
 5868                        .skip_while(|window| window.window_id() != current_window_id)
 5869                        .nth(1)
 5870                },
 5871            );
 5872
 5873        if let Some(window) = next_window {
 5874            window
 5875                .update(cx, |_, window, _| window.activate_window())
 5876                .ok();
 5877        }
 5878    }
 5879
 5880    pub fn activate_previous_window(&mut self, cx: &mut Context<Self>) {
 5881        let Some(current_window_id) = cx.active_window().map(|a| a.window_id()) else {
 5882            return;
 5883        };
 5884        let windows = cx.windows();
 5885        let prev_window =
 5886            SystemWindowTabController::get_prev_tab_group_window(cx, current_window_id).or_else(
 5887                || {
 5888                    windows
 5889                        .iter()
 5890                        .rev()
 5891                        .cycle()
 5892                        .skip_while(|window| window.window_id() != current_window_id)
 5893                        .nth(1)
 5894                },
 5895            );
 5896
 5897        if let Some(window) = prev_window {
 5898            window
 5899                .update(cx, |_, window, _| window.activate_window())
 5900                .ok();
 5901        }
 5902    }
 5903
 5904    pub fn cancel(&mut self, _: &menu::Cancel, window: &mut Window, cx: &mut Context<Self>) {
 5905        if cx.stop_active_drag(window) {
 5906        } else if let Some((notification_id, _)) = self.notifications.pop() {
 5907            dismiss_app_notification(&notification_id, cx);
 5908        } else {
 5909            cx.propagate();
 5910        }
 5911    }
 5912
 5913    fn adjust_dock_size_by_px(
 5914        &mut self,
 5915        panel_size: Pixels,
 5916        dock_pos: DockPosition,
 5917        px: Pixels,
 5918        window: &mut Window,
 5919        cx: &mut Context<Self>,
 5920    ) {
 5921        match dock_pos {
 5922            DockPosition::Left => self.resize_left_dock(panel_size + px, window, cx),
 5923            DockPosition::Right => self.resize_right_dock(panel_size + px, window, cx),
 5924            DockPosition::Bottom => self.resize_bottom_dock(panel_size + px, window, cx),
 5925        }
 5926    }
 5927
 5928    fn resize_left_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5929        let size = new_size.min(self.bounds.right() - RESIZE_HANDLE_SIZE);
 5930
 5931        self.left_dock.update(cx, |left_dock, cx| {
 5932            if WorkspaceSettings::get_global(cx)
 5933                .resize_all_panels_in_dock
 5934                .contains(&DockPosition::Left)
 5935            {
 5936                left_dock.resize_all_panels(Some(size), window, cx);
 5937            } else {
 5938                left_dock.resize_active_panel(Some(size), window, cx);
 5939            }
 5940        });
 5941    }
 5942
 5943    fn resize_right_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5944        let mut size = new_size.max(self.bounds.left() - RESIZE_HANDLE_SIZE);
 5945        self.left_dock.read_with(cx, |left_dock, cx| {
 5946            let left_dock_size = left_dock
 5947                .active_panel_size(window, cx)
 5948                .unwrap_or(Pixels(0.0));
 5949            if left_dock_size + size > self.bounds.right() {
 5950                size = self.bounds.right() - left_dock_size
 5951            }
 5952        });
 5953        self.right_dock.update(cx, |right_dock, cx| {
 5954            if WorkspaceSettings::get_global(cx)
 5955                .resize_all_panels_in_dock
 5956                .contains(&DockPosition::Right)
 5957            {
 5958                right_dock.resize_all_panels(Some(size), window, cx);
 5959            } else {
 5960                right_dock.resize_active_panel(Some(size), window, cx);
 5961            }
 5962        });
 5963    }
 5964
 5965    fn resize_bottom_dock(&mut self, new_size: Pixels, window: &mut Window, cx: &mut App) {
 5966        let size = new_size.min(self.bounds.bottom() - RESIZE_HANDLE_SIZE - self.bounds.top());
 5967        self.bottom_dock.update(cx, |bottom_dock, cx| {
 5968            if WorkspaceSettings::get_global(cx)
 5969                .resize_all_panels_in_dock
 5970                .contains(&DockPosition::Bottom)
 5971            {
 5972                bottom_dock.resize_all_panels(Some(size), window, cx);
 5973            } else {
 5974                bottom_dock.resize_active_panel(Some(size), window, cx);
 5975            }
 5976        });
 5977    }
 5978
 5979    fn toggle_edit_predictions_all_files(
 5980        &mut self,
 5981        _: &ToggleEditPrediction,
 5982        _window: &mut Window,
 5983        cx: &mut Context<Self>,
 5984    ) {
 5985        let fs = self.project().read(cx).fs().clone();
 5986        let show_edit_predictions = all_language_settings(None, cx).show_edit_predictions(None, cx);
 5987        update_settings_file::<AllLanguageSettings>(fs, cx, move |file, _| {
 5988            file.defaults.show_edit_predictions = Some(!show_edit_predictions)
 5989        });
 5990    }
 5991}
 5992
 5993fn leader_border_for_pane(
 5994    follower_states: &HashMap<CollaboratorId, FollowerState>,
 5995    pane: &Entity<Pane>,
 5996    _: &Window,
 5997    cx: &App,
 5998) -> Option<Div> {
 5999    let (leader_id, _follower_state) = follower_states.iter().find_map(|(leader_id, state)| {
 6000        if state.pane() == pane {
 6001            Some((*leader_id, state))
 6002        } else {
 6003            None
 6004        }
 6005    })?;
 6006
 6007    let mut leader_color = match leader_id {
 6008        CollaboratorId::PeerId(leader_peer_id) => {
 6009            let room = ActiveCall::try_global(cx)?.read(cx).room()?.read(cx);
 6010            let leader = room.remote_participant_for_peer_id(leader_peer_id)?;
 6011
 6012            cx.theme()
 6013                .players()
 6014                .color_for_participant(leader.participant_index.0)
 6015                .cursor
 6016        }
 6017        CollaboratorId::Agent => cx.theme().players().agent().cursor,
 6018    };
 6019    leader_color.fade_out(0.3);
 6020    Some(
 6021        div()
 6022            .absolute()
 6023            .size_full()
 6024            .left_0()
 6025            .top_0()
 6026            .border_2()
 6027            .border_color(leader_color),
 6028    )
 6029}
 6030
 6031fn window_bounds_env_override() -> Option<Bounds<Pixels>> {
 6032    ZED_WINDOW_POSITION
 6033        .zip(*ZED_WINDOW_SIZE)
 6034        .map(|(position, size)| Bounds {
 6035            origin: position,
 6036            size,
 6037        })
 6038}
 6039
 6040fn open_items(
 6041    serialized_workspace: Option<SerializedWorkspace>,
 6042    mut project_paths_to_open: Vec<(PathBuf, Option<ProjectPath>)>,
 6043    window: &mut Window,
 6044    cx: &mut Context<Workspace>,
 6045) -> impl 'static + Future<Output = Result<Vec<Option<Result<Box<dyn ItemHandle>>>>>> + use<> {
 6046    let restored_items = serialized_workspace.map(|serialized_workspace| {
 6047        Workspace::load_workspace(
 6048            serialized_workspace,
 6049            project_paths_to_open
 6050                .iter()
 6051                .map(|(_, project_path)| project_path)
 6052                .cloned()
 6053                .collect(),
 6054            window,
 6055            cx,
 6056        )
 6057    });
 6058
 6059    cx.spawn_in(window, async move |workspace, cx| {
 6060        let mut opened_items = Vec::with_capacity(project_paths_to_open.len());
 6061
 6062        if let Some(restored_items) = restored_items {
 6063            let restored_items = restored_items.await?;
 6064
 6065            let restored_project_paths = restored_items
 6066                .iter()
 6067                .filter_map(|item| {
 6068                    cx.update(|_, cx| item.as_ref()?.project_path(cx))
 6069                        .ok()
 6070                        .flatten()
 6071                })
 6072                .collect::<HashSet<_>>();
 6073
 6074            for restored_item in restored_items {
 6075                opened_items.push(restored_item.map(Ok));
 6076            }
 6077
 6078            project_paths_to_open
 6079                .iter_mut()
 6080                .for_each(|(_, project_path)| {
 6081                    if let Some(project_path_to_open) = project_path
 6082                        && restored_project_paths.contains(project_path_to_open)
 6083                    {
 6084                        *project_path = None;
 6085                    }
 6086                });
 6087        } else {
 6088            for _ in 0..project_paths_to_open.len() {
 6089                opened_items.push(None);
 6090            }
 6091        }
 6092        assert!(opened_items.len() == project_paths_to_open.len());
 6093
 6094        let tasks =
 6095            project_paths_to_open
 6096                .into_iter()
 6097                .enumerate()
 6098                .map(|(ix, (abs_path, project_path))| {
 6099                    let workspace = workspace.clone();
 6100                    cx.spawn(async move |cx| {
 6101                        let file_project_path = project_path?;
 6102                        let abs_path_task = workspace.update(cx, |workspace, cx| {
 6103                            workspace.project().update(cx, |project, cx| {
 6104                                project.resolve_abs_path(abs_path.to_string_lossy().as_ref(), cx)
 6105                            })
 6106                        });
 6107
 6108                        // We only want to open file paths here. If one of the items
 6109                        // here is a directory, it was already opened further above
 6110                        // with a `find_or_create_worktree`.
 6111                        if let Ok(task) = abs_path_task
 6112                            && task.await.is_none_or(|p| p.is_file())
 6113                        {
 6114                            return Some((
 6115                                ix,
 6116                                workspace
 6117                                    .update_in(cx, |workspace, window, cx| {
 6118                                        workspace.open_path(
 6119                                            file_project_path,
 6120                                            None,
 6121                                            true,
 6122                                            window,
 6123                                            cx,
 6124                                        )
 6125                                    })
 6126                                    .log_err()?
 6127                                    .await,
 6128                            ));
 6129                        }
 6130                        None
 6131                    })
 6132                });
 6133
 6134        let tasks = tasks.collect::<Vec<_>>();
 6135
 6136        let tasks = futures::future::join_all(tasks);
 6137        for (ix, path_open_result) in tasks.await.into_iter().flatten() {
 6138            opened_items[ix] = Some(path_open_result);
 6139        }
 6140
 6141        Ok(opened_items)
 6142    })
 6143}
 6144
 6145enum ActivateInDirectionTarget {
 6146    Pane(Entity<Pane>),
 6147    Dock(Entity<Dock>),
 6148}
 6149
 6150fn notify_if_database_failed(workspace: WindowHandle<Workspace>, cx: &mut AsyncApp) {
 6151    workspace
 6152        .update(cx, |workspace, _, cx| {
 6153            if (*db::ALL_FILE_DB_FAILED).load(std::sync::atomic::Ordering::Acquire) {
 6154                struct DatabaseFailedNotification;
 6155
 6156                workspace.show_notification(
 6157                    NotificationId::unique::<DatabaseFailedNotification>(),
 6158                    cx,
 6159                    |cx| {
 6160                        cx.new(|cx| {
 6161                            MessageNotification::new("Failed to load the database file.", cx)
 6162                                .primary_message("File an Issue")
 6163                                .primary_icon(IconName::Plus)
 6164                                .primary_on_click(|window, cx| {
 6165                                    window.dispatch_action(Box::new(FileBugReport), cx)
 6166                                })
 6167                        })
 6168                    },
 6169                );
 6170            }
 6171        })
 6172        .log_err();
 6173}
 6174
 6175fn px_with_ui_font_fallback(val: u32, cx: &Context<Workspace>) -> Pixels {
 6176    if val == 0 {
 6177        ThemeSettings::get_global(cx).ui_font_size(cx)
 6178    } else {
 6179        px(val as f32)
 6180    }
 6181}
 6182
 6183fn adjust_active_dock_size_by_px(
 6184    px: Pixels,
 6185    workspace: &mut Workspace,
 6186    window: &mut Window,
 6187    cx: &mut Context<Workspace>,
 6188) {
 6189    let Some(active_dock) = workspace
 6190        .all_docks()
 6191        .into_iter()
 6192        .find(|dock| dock.focus_handle(cx).contains_focused(window, cx))
 6193    else {
 6194        return;
 6195    };
 6196    let dock = active_dock.read(cx);
 6197    let Some(panel_size) = dock.active_panel_size(window, cx) else {
 6198        return;
 6199    };
 6200    let dock_pos = dock.position();
 6201    workspace.adjust_dock_size_by_px(panel_size, dock_pos, px, window, cx);
 6202}
 6203
 6204fn adjust_open_docks_size_by_px(
 6205    px: Pixels,
 6206    workspace: &mut Workspace,
 6207    window: &mut Window,
 6208    cx: &mut Context<Workspace>,
 6209) {
 6210    let docks = workspace
 6211        .all_docks()
 6212        .into_iter()
 6213        .filter_map(|dock| {
 6214            if dock.read(cx).is_open() {
 6215                let dock = dock.read(cx);
 6216                let panel_size = dock.active_panel_size(window, cx)?;
 6217                let dock_pos = dock.position();
 6218                Some((panel_size, dock_pos, px))
 6219            } else {
 6220                None
 6221            }
 6222        })
 6223        .collect::<Vec<_>>();
 6224
 6225    docks
 6226        .into_iter()
 6227        .for_each(|(panel_size, dock_pos, offset)| {
 6228            workspace.adjust_dock_size_by_px(panel_size, dock_pos, offset, window, cx);
 6229        });
 6230}
 6231
 6232impl Focusable for Workspace {
 6233    fn focus_handle(&self, cx: &App) -> FocusHandle {
 6234        self.active_pane.focus_handle(cx)
 6235    }
 6236}
 6237
 6238#[derive(Clone)]
 6239struct DraggedDock(DockPosition);
 6240
 6241impl Render for DraggedDock {
 6242    fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
 6243        gpui::Empty
 6244    }
 6245}
 6246
 6247impl Render for Workspace {
 6248    fn render(&mut self, window: &mut Window, cx: &mut Context<Self>) -> impl IntoElement {
 6249        let mut context = KeyContext::new_with_defaults();
 6250        context.add("Workspace");
 6251        context.set("keyboard_layout", cx.keyboard_layout().name().to_string());
 6252        if let Some(status) = self
 6253            .debugger_provider
 6254            .as_ref()
 6255            .and_then(|provider| provider.active_thread_state(cx))
 6256        {
 6257            match status {
 6258                ThreadStatus::Running | ThreadStatus::Stepping => {
 6259                    context.add("debugger_running");
 6260                }
 6261                ThreadStatus::Stopped => context.add("debugger_stopped"),
 6262                ThreadStatus::Exited | ThreadStatus::Ended => {}
 6263            }
 6264        }
 6265
 6266        let centered_layout = self.centered_layout
 6267            && self.center.panes().len() == 1
 6268            && self.active_item(cx).is_some();
 6269        let render_padding = |size| {
 6270            (size > 0.0).then(|| {
 6271                div()
 6272                    .h_full()
 6273                    .w(relative(size))
 6274                    .bg(cx.theme().colors().editor_background)
 6275                    .border_color(cx.theme().colors().pane_group_border)
 6276            })
 6277        };
 6278        let paddings = if centered_layout {
 6279            let settings = WorkspaceSettings::get_global(cx).centered_layout;
 6280            (
 6281                render_padding(Self::adjust_padding(settings.left_padding)),
 6282                render_padding(Self::adjust_padding(settings.right_padding)),
 6283            )
 6284        } else {
 6285            (None, None)
 6286        };
 6287        let ui_font = theme::setup_ui_font(window, cx);
 6288
 6289        let theme = cx.theme().clone();
 6290        let colors = theme.colors();
 6291        let notification_entities = self
 6292            .notifications
 6293            .iter()
 6294            .map(|(_, notification)| notification.entity_id())
 6295            .collect::<Vec<_>>();
 6296        let bottom_dock_layout = WorkspaceSettings::get_global(cx).bottom_dock_layout;
 6297
 6298        client_side_decorations(
 6299            self.actions(div(), window, cx)
 6300                .key_context(context)
 6301                .relative()
 6302                .size_full()
 6303                .flex()
 6304                .flex_col()
 6305                .font(ui_font)
 6306                .gap_0()
 6307                .justify_start()
 6308                .items_start()
 6309                .text_color(colors.text)
 6310                .overflow_hidden()
 6311                .children(self.titlebar_item.clone())
 6312                .on_modifiers_changed(move |_, _, cx| {
 6313                    for &id in &notification_entities {
 6314                        cx.notify(id);
 6315                    }
 6316                })
 6317                .child(
 6318                    div()
 6319                        .size_full()
 6320                        .relative()
 6321                        .flex_1()
 6322                        .flex()
 6323                        .flex_col()
 6324                        .child(
 6325                            div()
 6326                                .id("workspace")
 6327                                .bg(colors.background)
 6328                                .relative()
 6329                                .flex_1()
 6330                                .w_full()
 6331                                .flex()
 6332                                .flex_col()
 6333                                .overflow_hidden()
 6334                                .border_t_1()
 6335                                .border_b_1()
 6336                                .border_color(colors.border)
 6337                                .child({
 6338                                    let this = cx.entity();
 6339                                    canvas(
 6340                                        move |bounds, window, cx| {
 6341                                            this.update(cx, |this, cx| {
 6342                                                let bounds_changed = this.bounds != bounds;
 6343                                                this.bounds = bounds;
 6344
 6345                                                if bounds_changed {
 6346                                                    this.left_dock.update(cx, |dock, cx| {
 6347                                                        dock.clamp_panel_size(
 6348                                                            bounds.size.width,
 6349                                                            window,
 6350                                                            cx,
 6351                                                        )
 6352                                                    });
 6353
 6354                                                    this.right_dock.update(cx, |dock, cx| {
 6355                                                        dock.clamp_panel_size(
 6356                                                            bounds.size.width,
 6357                                                            window,
 6358                                                            cx,
 6359                                                        )
 6360                                                    });
 6361
 6362                                                    this.bottom_dock.update(cx, |dock, cx| {
 6363                                                        dock.clamp_panel_size(
 6364                                                            bounds.size.height,
 6365                                                            window,
 6366                                                            cx,
 6367                                                        )
 6368                                                    });
 6369                                                }
 6370                                            })
 6371                                        },
 6372                                        |_, _, _, _| {},
 6373                                    )
 6374                                    .absolute()
 6375                                    .size_full()
 6376                                })
 6377                                .when(self.zoomed.is_none(), |this| {
 6378                                    this.on_drag_move(cx.listener(
 6379                                        move |workspace,
 6380                                              e: &DragMoveEvent<DraggedDock>,
 6381                                              window,
 6382                                              cx| {
 6383                                            if workspace.previous_dock_drag_coordinates
 6384                                                != Some(e.event.position)
 6385                                            {
 6386                                                workspace.previous_dock_drag_coordinates =
 6387                                                    Some(e.event.position);
 6388                                                match e.drag(cx).0 {
 6389                                                    DockPosition::Left => {
 6390                                                        workspace.resize_left_dock(
 6391                                                            e.event.position.x
 6392                                                                - workspace.bounds.left(),
 6393                                                            window,
 6394                                                            cx,
 6395                                                        );
 6396                                                    }
 6397                                                    DockPosition::Right => {
 6398                                                        workspace.resize_right_dock(
 6399                                                            workspace.bounds.right()
 6400                                                                - e.event.position.x,
 6401                                                            window,
 6402                                                            cx,
 6403                                                        );
 6404                                                    }
 6405                                                    DockPosition::Bottom => {
 6406                                                        workspace.resize_bottom_dock(
 6407                                                            workspace.bounds.bottom()
 6408                                                                - e.event.position.y,
 6409                                                            window,
 6410                                                            cx,
 6411                                                        );
 6412                                                    }
 6413                                                };
 6414                                                workspace.serialize_workspace(window, cx);
 6415                                            }
 6416                                        },
 6417                                    ))
 6418                                })
 6419                                .child({
 6420                                    match bottom_dock_layout {
 6421                                        BottomDockLayout::Full => div()
 6422                                            .flex()
 6423                                            .flex_col()
 6424                                            .h_full()
 6425                                            .child(
 6426                                                div()
 6427                                                    .flex()
 6428                                                    .flex_row()
 6429                                                    .flex_1()
 6430                                                    .overflow_hidden()
 6431                                                    .children(self.render_dock(
 6432                                                        DockPosition::Left,
 6433                                                        &self.left_dock,
 6434                                                        window,
 6435                                                        cx,
 6436                                                    ))
 6437                                                    .child(
 6438                                                        div()
 6439                                                            .flex()
 6440                                                            .flex_col()
 6441                                                            .flex_1()
 6442                                                            .overflow_hidden()
 6443                                                            .child(
 6444                                                                h_flex()
 6445                                                                    .flex_1()
 6446                                                                    .when_some(
 6447                                                                        paddings.0,
 6448                                                                        |this, p| {
 6449                                                                            this.child(
 6450                                                                                p.border_r_1(),
 6451                                                                            )
 6452                                                                        },
 6453                                                                    )
 6454                                                                    .child(self.center.render(
 6455                                                                        self.zoomed.as_ref(),
 6456                                                                        &PaneRenderContext {
 6457                                                                            follower_states:
 6458                                                                                &self.follower_states,
 6459                                                                            active_call: self.active_call(),
 6460                                                                            active_pane: &self.active_pane,
 6461                                                                            app_state: &self.app_state,
 6462                                                                            project: &self.project,
 6463                                                                            workspace: &self.weak_self,
 6464                                                                        },
 6465                                                                        window,
 6466                                                                        cx,
 6467                                                                    ))
 6468                                                                    .when_some(
 6469                                                                        paddings.1,
 6470                                                                        |this, p| {
 6471                                                                            this.child(
 6472                                                                                p.border_l_1(),
 6473                                                                            )
 6474                                                                        },
 6475                                                                    ),
 6476                                                            ),
 6477                                                    )
 6478                                                    .children(self.render_dock(
 6479                                                        DockPosition::Right,
 6480                                                        &self.right_dock,
 6481                                                        window,
 6482                                                        cx,
 6483                                                    )),
 6484                                            )
 6485                                            .child(div().w_full().children(self.render_dock(
 6486                                                DockPosition::Bottom,
 6487                                                &self.bottom_dock,
 6488                                                window,
 6489                                                cx
 6490                                            ))),
 6491
 6492                                        BottomDockLayout::LeftAligned => div()
 6493                                            .flex()
 6494                                            .flex_row()
 6495                                            .h_full()
 6496                                            .child(
 6497                                                div()
 6498                                                    .flex()
 6499                                                    .flex_col()
 6500                                                    .flex_1()
 6501                                                    .h_full()
 6502                                                    .child(
 6503                                                        div()
 6504                                                            .flex()
 6505                                                            .flex_row()
 6506                                                            .flex_1()
 6507                                                            .children(self.render_dock(DockPosition::Left, &self.left_dock, window, cx))
 6508                                                            .child(
 6509                                                                div()
 6510                                                                    .flex()
 6511                                                                    .flex_col()
 6512                                                                    .flex_1()
 6513                                                                    .overflow_hidden()
 6514                                                                    .child(
 6515                                                                        h_flex()
 6516                                                                            .flex_1()
 6517                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6518                                                                            .child(self.center.render(
 6519                                                                                self.zoomed.as_ref(),
 6520                                                                                &PaneRenderContext {
 6521                                                                                    follower_states:
 6522                                                                                        &self.follower_states,
 6523                                                                                    active_call: self.active_call(),
 6524                                                                                    active_pane: &self.active_pane,
 6525                                                                                    app_state: &self.app_state,
 6526                                                                                    project: &self.project,
 6527                                                                                    workspace: &self.weak_self,
 6528                                                                                },
 6529                                                                                window,
 6530                                                                                cx,
 6531                                                                            ))
 6532                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6533                                                                    )
 6534                                                            )
 6535                                                    )
 6536                                                    .child(
 6537                                                        div()
 6538                                                            .w_full()
 6539                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6540                                                    ),
 6541                                            )
 6542                                            .children(self.render_dock(
 6543                                                DockPosition::Right,
 6544                                                &self.right_dock,
 6545                                                window,
 6546                                                cx,
 6547                                            )),
 6548
 6549                                        BottomDockLayout::RightAligned => div()
 6550                                            .flex()
 6551                                            .flex_row()
 6552                                            .h_full()
 6553                                            .children(self.render_dock(
 6554                                                DockPosition::Left,
 6555                                                &self.left_dock,
 6556                                                window,
 6557                                                cx,
 6558                                            ))
 6559                                            .child(
 6560                                                div()
 6561                                                    .flex()
 6562                                                    .flex_col()
 6563                                                    .flex_1()
 6564                                                    .h_full()
 6565                                                    .child(
 6566                                                        div()
 6567                                                            .flex()
 6568                                                            .flex_row()
 6569                                                            .flex_1()
 6570                                                            .child(
 6571                                                                div()
 6572                                                                    .flex()
 6573                                                                    .flex_col()
 6574                                                                    .flex_1()
 6575                                                                    .overflow_hidden()
 6576                                                                    .child(
 6577                                                                        h_flex()
 6578                                                                            .flex_1()
 6579                                                                            .when_some(paddings.0, |this, p| this.child(p.border_r_1()))
 6580                                                                            .child(self.center.render(
 6581                                                                                self.zoomed.as_ref(),
 6582                                                                                &PaneRenderContext {
 6583                                                                                    follower_states:
 6584                                                                                        &self.follower_states,
 6585                                                                                    active_call: self.active_call(),
 6586                                                                                    active_pane: &self.active_pane,
 6587                                                                                    app_state: &self.app_state,
 6588                                                                                    project: &self.project,
 6589                                                                                    workspace: &self.weak_self,
 6590                                                                                },
 6591                                                                                window,
 6592                                                                                cx,
 6593                                                                            ))
 6594                                                                            .when_some(paddings.1, |this, p| this.child(p.border_l_1())),
 6595                                                                    )
 6596                                                            )
 6597                                                            .children(self.render_dock(DockPosition::Right, &self.right_dock, window, cx))
 6598                                                    )
 6599                                                    .child(
 6600                                                        div()
 6601                                                            .w_full()
 6602                                                            .children(self.render_dock(DockPosition::Bottom, &self.bottom_dock, window, cx))
 6603                                                    ),
 6604                                            ),
 6605
 6606                                        BottomDockLayout::Contained => div()
 6607                                            .flex()
 6608                                            .flex_row()
 6609                                            .h_full()
 6610                                            .children(self.render_dock(
 6611                                                DockPosition::Left,
 6612                                                &self.left_dock,
 6613                                                window,
 6614                                                cx,
 6615                                            ))
 6616                                            .child(
 6617                                                div()
 6618                                                    .flex()
 6619                                                    .flex_col()
 6620                                                    .flex_1()
 6621                                                    .overflow_hidden()
 6622                                                    .child(
 6623                                                        h_flex()
 6624                                                            .flex_1()
 6625                                                            .when_some(paddings.0, |this, p| {
 6626                                                                this.child(p.border_r_1())
 6627                                                            })
 6628                                                            .child(self.center.render(
 6629                                                                self.zoomed.as_ref(),
 6630                                                                &PaneRenderContext {
 6631                                                                    follower_states:
 6632                                                                        &self.follower_states,
 6633                                                                    active_call: self.active_call(),
 6634                                                                    active_pane: &self.active_pane,
 6635                                                                    app_state: &self.app_state,
 6636                                                                    project: &self.project,
 6637                                                                    workspace: &self.weak_self,
 6638                                                                },
 6639                                                                window,
 6640                                                                cx,
 6641                                                            ))
 6642                                                            .when_some(paddings.1, |this, p| {
 6643                                                                this.child(p.border_l_1())
 6644                                                            }),
 6645                                                    )
 6646                                                    .children(self.render_dock(
 6647                                                        DockPosition::Bottom,
 6648                                                        &self.bottom_dock,
 6649                                                        window,
 6650                                                        cx,
 6651                                                    )),
 6652                                            )
 6653                                            .children(self.render_dock(
 6654                                                DockPosition::Right,
 6655                                                &self.right_dock,
 6656                                                window,
 6657                                                cx,
 6658                                            )),
 6659                                    }
 6660                                })
 6661                                .children(self.zoomed.as_ref().and_then(|view| {
 6662                                    let zoomed_view = view.upgrade()?;
 6663                                    let div = div()
 6664                                        .occlude()
 6665                                        .absolute()
 6666                                        .overflow_hidden()
 6667                                        .border_color(colors.border)
 6668                                        .bg(colors.background)
 6669                                        .child(zoomed_view)
 6670                                        .inset_0()
 6671                                        .shadow_lg();
 6672
 6673                                    if !WorkspaceSettings::get_global(cx).zoomed_padding {
 6674                                       return Some(div);
 6675                                    }
 6676
 6677                                    Some(match self.zoomed_position {
 6678                                        Some(DockPosition::Left) => div.right_2().border_r_1(),
 6679                                        Some(DockPosition::Right) => div.left_2().border_l_1(),
 6680                                        Some(DockPosition::Bottom) => div.top_2().border_t_1(),
 6681                                        None => {
 6682                                            div.top_2().bottom_2().left_2().right_2().border_1()
 6683                                        }
 6684                                    })
 6685                                }))
 6686                                .children(self.render_notifications(window, cx)),
 6687                        )
 6688                        .child(self.status_bar.clone())
 6689                        .child(self.modal_layer.clone())
 6690                        .child(self.toast_layer.clone()),
 6691                ),
 6692            window,
 6693            cx,
 6694        )
 6695    }
 6696}
 6697
 6698impl WorkspaceStore {
 6699    pub fn new(client: Arc<Client>, cx: &mut Context<Self>) -> Self {
 6700        Self {
 6701            workspaces: Default::default(),
 6702            _subscriptions: vec![
 6703                client.add_request_handler(cx.weak_entity(), Self::handle_follow),
 6704                client.add_message_handler(cx.weak_entity(), Self::handle_update_followers),
 6705            ],
 6706            client,
 6707        }
 6708    }
 6709
 6710    pub fn update_followers(
 6711        &self,
 6712        project_id: Option<u64>,
 6713        update: proto::update_followers::Variant,
 6714        cx: &App,
 6715    ) -> Option<()> {
 6716        let active_call = ActiveCall::try_global(cx)?;
 6717        let room_id = active_call.read(cx).room()?.read(cx).id();
 6718        self.client
 6719            .send(proto::UpdateFollowers {
 6720                room_id,
 6721                project_id,
 6722                variant: Some(update),
 6723            })
 6724            .log_err()
 6725    }
 6726
 6727    pub async fn handle_follow(
 6728        this: Entity<Self>,
 6729        envelope: TypedEnvelope<proto::Follow>,
 6730        mut cx: AsyncApp,
 6731    ) -> Result<proto::FollowResponse> {
 6732        this.update(&mut cx, |this, cx| {
 6733            let follower = Follower {
 6734                project_id: envelope.payload.project_id,
 6735                peer_id: envelope.original_sender_id()?,
 6736            };
 6737
 6738            let mut response = proto::FollowResponse::default();
 6739            this.workspaces.retain(|workspace| {
 6740                workspace
 6741                    .update(cx, |workspace, window, cx| {
 6742                        let handler_response =
 6743                            workspace.handle_follow(follower.project_id, window, cx);
 6744                        if let Some(active_view) = handler_response.active_view
 6745                            && workspace.project.read(cx).remote_id() == follower.project_id
 6746                        {
 6747                            response.active_view = Some(active_view)
 6748                        }
 6749                    })
 6750                    .is_ok()
 6751            });
 6752
 6753            Ok(response)
 6754        })?
 6755    }
 6756
 6757    async fn handle_update_followers(
 6758        this: Entity<Self>,
 6759        envelope: TypedEnvelope<proto::UpdateFollowers>,
 6760        mut cx: AsyncApp,
 6761    ) -> Result<()> {
 6762        let leader_id = envelope.original_sender_id()?;
 6763        let update = envelope.payload;
 6764
 6765        this.update(&mut cx, |this, cx| {
 6766            this.workspaces.retain(|workspace| {
 6767                workspace
 6768                    .update(cx, |workspace, window, cx| {
 6769                        let project_id = workspace.project.read(cx).remote_id();
 6770                        if update.project_id != project_id && update.project_id.is_some() {
 6771                            return;
 6772                        }
 6773                        workspace.handle_update_followers(leader_id, update.clone(), window, cx);
 6774                    })
 6775                    .is_ok()
 6776            });
 6777            Ok(())
 6778        })?
 6779    }
 6780
 6781    pub fn workspaces(&self) -> &HashSet<WindowHandle<Workspace>> {
 6782        &self.workspaces
 6783    }
 6784}
 6785
 6786impl ViewId {
 6787    pub(crate) fn from_proto(message: proto::ViewId) -> Result<Self> {
 6788        Ok(Self {
 6789            creator: message
 6790                .creator
 6791                .map(CollaboratorId::PeerId)
 6792                .context("creator is missing")?,
 6793            id: message.id,
 6794        })
 6795    }
 6796
 6797    pub(crate) fn to_proto(self) -> Option<proto::ViewId> {
 6798        if let CollaboratorId::PeerId(peer_id) = self.creator {
 6799            Some(proto::ViewId {
 6800                creator: Some(peer_id),
 6801                id: self.id,
 6802            })
 6803        } else {
 6804            None
 6805        }
 6806    }
 6807}
 6808
 6809impl FollowerState {
 6810    fn pane(&self) -> &Entity<Pane> {
 6811        self.dock_pane.as_ref().unwrap_or(&self.center_pane)
 6812    }
 6813}
 6814
 6815pub trait WorkspaceHandle {
 6816    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath>;
 6817}
 6818
 6819impl WorkspaceHandle for Entity<Workspace> {
 6820    fn file_project_paths(&self, cx: &App) -> Vec<ProjectPath> {
 6821        self.read(cx)
 6822            .worktrees(cx)
 6823            .flat_map(|worktree| {
 6824                let worktree_id = worktree.read(cx).id();
 6825                worktree.read(cx).files(true, 0).map(move |f| ProjectPath {
 6826                    worktree_id,
 6827                    path: f.path.clone(),
 6828                })
 6829            })
 6830            .collect::<Vec<_>>()
 6831    }
 6832}
 6833
 6834pub async fn last_opened_workspace_location() -> Option<(SerializedWorkspaceLocation, PathList)> {
 6835    DB.last_workspace().await.log_err().flatten()
 6836}
 6837
 6838pub fn last_session_workspace_locations(
 6839    last_session_id: &str,
 6840    last_session_window_stack: Option<Vec<WindowId>>,
 6841) -> Option<Vec<(SerializedWorkspaceLocation, PathList)>> {
 6842    DB.last_session_workspace_locations(last_session_id, last_session_window_stack)
 6843        .log_err()
 6844}
 6845
 6846actions!(
 6847    collab,
 6848    [
 6849        /// Opens the channel notes for the current call.
 6850        ///
 6851        /// If you want to open a specific channel, use `zed::OpenZedUrl` with a channel notes URL -
 6852        /// can be copied via "Copy link to section" in the context menu of the channel notes
 6853        /// buffer. These URLs look like `https://zed.dev/channel/channel-name-CHANNEL_ID/notes`.
 6854        OpenChannelNotes,
 6855        /// Mutes your microphone.
 6856        Mute,
 6857        /// Deafens yourself (mute both microphone and speakers).
 6858        Deafen,
 6859        /// Leaves the current call.
 6860        LeaveCall,
 6861        /// Shares the current project with collaborators.
 6862        ShareProject,
 6863        /// Shares your screen with collaborators.
 6864        ScreenShare
 6865    ]
 6866);
 6867actions!(
 6868    zed,
 6869    [
 6870        /// Opens the Zed log file.
 6871        OpenLog
 6872    ]
 6873);
 6874
 6875async fn join_channel_internal(
 6876    channel_id: ChannelId,
 6877    app_state: &Arc<AppState>,
 6878    requesting_window: Option<WindowHandle<Workspace>>,
 6879    active_call: &Entity<ActiveCall>,
 6880    cx: &mut AsyncApp,
 6881) -> Result<bool> {
 6882    let (should_prompt, open_room) = active_call.update(cx, |active_call, cx| {
 6883        let Some(room) = active_call.room().map(|room| room.read(cx)) else {
 6884            return (false, None);
 6885        };
 6886
 6887        let already_in_channel = room.channel_id() == Some(channel_id);
 6888        let should_prompt = room.is_sharing_project()
 6889            && !room.remote_participants().is_empty()
 6890            && !already_in_channel;
 6891        let open_room = if already_in_channel {
 6892            active_call.room().cloned()
 6893        } else {
 6894            None
 6895        };
 6896        (should_prompt, open_room)
 6897    })?;
 6898
 6899    if let Some(room) = open_room {
 6900        let task = room.update(cx, |room, cx| {
 6901            if let Some((project, host)) = room.most_active_project(cx) {
 6902                return Some(join_in_room_project(project, host, app_state.clone(), cx));
 6903            }
 6904
 6905            None
 6906        })?;
 6907        if let Some(task) = task {
 6908            task.await?;
 6909        }
 6910        return anyhow::Ok(true);
 6911    }
 6912
 6913    if should_prompt {
 6914        if let Some(workspace) = requesting_window {
 6915            let answer = workspace
 6916                .update(cx, |_, window, cx| {
 6917                    window.prompt(
 6918                        PromptLevel::Warning,
 6919                        "Do you want to switch channels?",
 6920                        Some("Leaving this call will unshare your current project."),
 6921                        &["Yes, Join Channel", "Cancel"],
 6922                        cx,
 6923                    )
 6924                })?
 6925                .await;
 6926
 6927            if answer == Ok(1) {
 6928                return Ok(false);
 6929            }
 6930        } else {
 6931            return Ok(false); // unreachable!() hopefully
 6932        }
 6933    }
 6934
 6935    let client = cx.update(|cx| active_call.read(cx).client())?;
 6936
 6937    let mut client_status = client.status();
 6938
 6939    // this loop will terminate within client::CONNECTION_TIMEOUT seconds.
 6940    'outer: loop {
 6941        let Some(status) = client_status.recv().await else {
 6942            anyhow::bail!("error connecting");
 6943        };
 6944
 6945        match status {
 6946            Status::Connecting
 6947            | Status::Authenticating
 6948            | Status::Authenticated
 6949            | Status::Reconnecting
 6950            | Status::Reauthenticating
 6951            | Status::Reauthenticated => continue,
 6952            Status::Connected { .. } => break 'outer,
 6953            Status::SignedOut | Status::AuthenticationError => {
 6954                return Err(ErrorCode::SignedOut.into());
 6955            }
 6956            Status::UpgradeRequired => return Err(ErrorCode::UpgradeRequired.into()),
 6957            Status::ConnectionError | Status::ConnectionLost | Status::ReconnectionError { .. } => {
 6958                return Err(ErrorCode::Disconnected.into());
 6959            }
 6960        }
 6961    }
 6962
 6963    let room = active_call
 6964        .update(cx, |active_call, cx| {
 6965            active_call.join_channel(channel_id, cx)
 6966        })?
 6967        .await?;
 6968
 6969    let Some(room) = room else {
 6970        return anyhow::Ok(true);
 6971    };
 6972
 6973    room.update(cx, |room, _| room.room_update_completed())?
 6974        .await;
 6975
 6976    let task = room.update(cx, |room, cx| {
 6977        if let Some((project, host)) = room.most_active_project(cx) {
 6978            return Some(join_in_room_project(project, host, app_state.clone(), cx));
 6979        }
 6980
 6981        // If you are the first to join a channel, see if you should share your project.
 6982        if room.remote_participants().is_empty()
 6983            && !room.local_participant_is_guest()
 6984            && let Some(workspace) = requesting_window
 6985        {
 6986            let project = workspace.update(cx, |workspace, _, cx| {
 6987                let project = workspace.project.read(cx);
 6988
 6989                if !CallSettings::get_global(cx).share_on_join {
 6990                    return None;
 6991                }
 6992
 6993                if (project.is_local() || project.is_via_remote_server())
 6994                    && project.visible_worktrees(cx).any(|tree| {
 6995                        tree.read(cx)
 6996                            .root_entry()
 6997                            .is_some_and(|entry| entry.is_dir())
 6998                    })
 6999                {
 7000                    Some(workspace.project.clone())
 7001                } else {
 7002                    None
 7003                }
 7004            });
 7005            if let Ok(Some(project)) = project {
 7006                return Some(cx.spawn(async move |room, cx| {
 7007                    room.update(cx, |room, cx| room.share_project(project, cx))?
 7008                        .await?;
 7009                    Ok(())
 7010                }));
 7011            }
 7012        }
 7013
 7014        None
 7015    })?;
 7016    if let Some(task) = task {
 7017        task.await?;
 7018        return anyhow::Ok(true);
 7019    }
 7020    anyhow::Ok(false)
 7021}
 7022
 7023pub fn join_channel(
 7024    channel_id: ChannelId,
 7025    app_state: Arc<AppState>,
 7026    requesting_window: Option<WindowHandle<Workspace>>,
 7027    cx: &mut App,
 7028) -> Task<Result<()>> {
 7029    let active_call = ActiveCall::global(cx);
 7030    cx.spawn(async move |cx| {
 7031        let result = join_channel_internal(
 7032            channel_id,
 7033            &app_state,
 7034            requesting_window,
 7035            &active_call,
 7036             cx,
 7037        )
 7038            .await;
 7039
 7040        // join channel succeeded, and opened a window
 7041        if matches!(result, Ok(true)) {
 7042            return anyhow::Ok(());
 7043        }
 7044
 7045        // find an existing workspace to focus and show call controls
 7046        let mut active_window =
 7047            requesting_window.or_else(|| activate_any_workspace_window( cx));
 7048        if active_window.is_none() {
 7049            // no open workspaces, make one to show the error in (blergh)
 7050            let (window_handle, _) = cx
 7051                .update(|cx| {
 7052                    Workspace::new_local(vec![], app_state.clone(), requesting_window, None, cx)
 7053                })?
 7054                .await?;
 7055
 7056            if result.is_ok() {
 7057                cx.update(|cx| {
 7058                    cx.dispatch_action(&OpenChannelNotes);
 7059                }).log_err();
 7060            }
 7061
 7062            active_window = Some(window_handle);
 7063        }
 7064
 7065        if let Err(err) = result {
 7066            log::error!("failed to join channel: {}", err);
 7067            if let Some(active_window) = active_window {
 7068                active_window
 7069                    .update(cx, |_, window, cx| {
 7070                        let detail: SharedString = match err.error_code() {
 7071                            ErrorCode::SignedOut => {
 7072                                "Please sign in to continue.".into()
 7073                            }
 7074                            ErrorCode::UpgradeRequired => {
 7075                                "Your are running an unsupported version of Zed. Please update to continue.".into()
 7076                            }
 7077                            ErrorCode::NoSuchChannel => {
 7078                                "No matching channel was found. Please check the link and try again.".into()
 7079                            }
 7080                            ErrorCode::Forbidden => {
 7081                                "This channel is private, and you do not have access. Please ask someone to add you and try again.".into()
 7082                            }
 7083                            ErrorCode::Disconnected => "Please check your internet connection and try again.".into(),
 7084                            _ => format!("{}\n\nPlease try again.", err).into(),
 7085                        };
 7086                        window.prompt(
 7087                            PromptLevel::Critical,
 7088                            "Failed to join channel",
 7089                            Some(&detail),
 7090                            &["Ok"],
 7091                        cx)
 7092                    })?
 7093                    .await
 7094                    .ok();
 7095            }
 7096        }
 7097
 7098        // return ok, we showed the error to the user.
 7099        anyhow::Ok(())
 7100    })
 7101}
 7102
 7103pub async fn get_any_active_workspace(
 7104    app_state: Arc<AppState>,
 7105    mut cx: AsyncApp,
 7106) -> anyhow::Result<WindowHandle<Workspace>> {
 7107    // find an existing workspace to focus and show call controls
 7108    let active_window = activate_any_workspace_window(&mut cx);
 7109    if active_window.is_none() {
 7110        cx.update(|cx| Workspace::new_local(vec![], app_state.clone(), None, None, cx))?
 7111            .await?;
 7112    }
 7113    activate_any_workspace_window(&mut cx).context("could not open zed")
 7114}
 7115
 7116fn activate_any_workspace_window(cx: &mut AsyncApp) -> Option<WindowHandle<Workspace>> {
 7117    cx.update(|cx| {
 7118        if let Some(workspace_window) = cx
 7119            .active_window()
 7120            .and_then(|window| window.downcast::<Workspace>())
 7121        {
 7122            return Some(workspace_window);
 7123        }
 7124
 7125        for window in cx.windows() {
 7126            if let Some(workspace_window) = window.downcast::<Workspace>() {
 7127                workspace_window
 7128                    .update(cx, |_, window, _| window.activate_window())
 7129                    .ok();
 7130                return Some(workspace_window);
 7131            }
 7132        }
 7133        None
 7134    })
 7135    .ok()
 7136    .flatten()
 7137}
 7138
 7139pub fn local_workspace_windows(cx: &App) -> Vec<WindowHandle<Workspace>> {
 7140    cx.windows()
 7141        .into_iter()
 7142        .filter_map(|window| window.downcast::<Workspace>())
 7143        .filter(|workspace| {
 7144            workspace
 7145                .read(cx)
 7146                .is_ok_and(|workspace| workspace.project.read(cx).is_local())
 7147        })
 7148        .collect()
 7149}
 7150
 7151#[derive(Default)]
 7152pub struct OpenOptions {
 7153    pub visible: Option<OpenVisible>,
 7154    pub focus: Option<bool>,
 7155    pub open_new_workspace: Option<bool>,
 7156    pub replace_window: Option<WindowHandle<Workspace>>,
 7157    pub env: Option<HashMap<String, String>>,
 7158}
 7159
 7160#[allow(clippy::type_complexity)]
 7161pub fn open_paths(
 7162    abs_paths: &[PathBuf],
 7163    app_state: Arc<AppState>,
 7164    open_options: OpenOptions,
 7165    cx: &mut App,
 7166) -> Task<
 7167    anyhow::Result<(
 7168        WindowHandle<Workspace>,
 7169        Vec<Option<anyhow::Result<Box<dyn ItemHandle>>>>,
 7170    )>,
 7171> {
 7172    let abs_paths = abs_paths.to_vec();
 7173    let mut existing = None;
 7174    let mut best_match = None;
 7175    let mut open_visible = OpenVisible::All;
 7176
 7177    cx.spawn(async move |cx| {
 7178        if open_options.open_new_workspace != Some(true) {
 7179            let all_paths = abs_paths.iter().map(|path| app_state.fs.metadata(path));
 7180            let all_metadatas = futures::future::join_all(all_paths)
 7181                .await
 7182                .into_iter()
 7183                .filter_map(|result| result.ok().flatten())
 7184                .collect::<Vec<_>>();
 7185
 7186            cx.update(|cx| {
 7187                for window in local_workspace_windows(cx) {
 7188                    if let Ok(workspace) = window.read(cx) {
 7189                        let m = workspace.project.read(cx).visibility_for_paths(
 7190                            &abs_paths,
 7191                            &all_metadatas,
 7192                            open_options.open_new_workspace == None,
 7193                            cx,
 7194                        );
 7195                        if m > best_match {
 7196                            existing = Some(window);
 7197                            best_match = m;
 7198                        } else if best_match.is_none()
 7199                            && open_options.open_new_workspace == Some(false)
 7200                        {
 7201                            existing = Some(window)
 7202                        }
 7203                    }
 7204                }
 7205            })?;
 7206
 7207            if open_options.open_new_workspace.is_none()
 7208                && existing.is_none()
 7209                && all_metadatas.iter().all(|file| !file.is_dir)
 7210            {
 7211                cx.update(|cx| {
 7212                    if let Some(window) = cx
 7213                        .active_window()
 7214                        .and_then(|window| window.downcast::<Workspace>())
 7215                        && let Ok(workspace) = window.read(cx)
 7216                    {
 7217                        let project = workspace.project().read(cx);
 7218                        if project.is_local() && !project.is_via_collab() {
 7219                            existing = Some(window);
 7220                            open_visible = OpenVisible::None;
 7221                            return;
 7222                        }
 7223                    }
 7224                    for window in local_workspace_windows(cx) {
 7225                        if let Ok(workspace) = window.read(cx) {
 7226                            let project = workspace.project().read(cx);
 7227                            if project.is_via_collab() {
 7228                                continue;
 7229                            }
 7230                            existing = Some(window);
 7231                            open_visible = OpenVisible::None;
 7232                            break;
 7233                        }
 7234                    }
 7235                })?;
 7236            }
 7237        }
 7238
 7239        if let Some(existing) = existing {
 7240            let open_task = existing
 7241                .update(cx, |workspace, window, cx| {
 7242                    window.activate_window();
 7243                    workspace.open_paths(
 7244                        abs_paths,
 7245                        OpenOptions {
 7246                            visible: Some(open_visible),
 7247                            ..Default::default()
 7248                        },
 7249                        None,
 7250                        window,
 7251                        cx,
 7252                    )
 7253                })?
 7254                .await;
 7255
 7256            _ = existing.update(cx, |workspace, _, cx| {
 7257                for item in open_task.iter().flatten() {
 7258                    if let Err(e) = item {
 7259                        workspace.show_error(&e, cx);
 7260                    }
 7261                }
 7262            });
 7263
 7264            Ok((existing, open_task))
 7265        } else {
 7266            cx.update(move |cx| {
 7267                Workspace::new_local(
 7268                    abs_paths,
 7269                    app_state.clone(),
 7270                    open_options.replace_window,
 7271                    open_options.env,
 7272                    cx,
 7273                )
 7274            })?
 7275            .await
 7276        }
 7277    })
 7278}
 7279
 7280pub fn open_new(
 7281    open_options: OpenOptions,
 7282    app_state: Arc<AppState>,
 7283    cx: &mut App,
 7284    init: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + 'static + Send,
 7285) -> Task<anyhow::Result<()>> {
 7286    let task = Workspace::new_local(Vec::new(), app_state, None, open_options.env, cx);
 7287    cx.spawn(async move |cx| {
 7288        let (workspace, opened_paths) = task.await?;
 7289        workspace.update(cx, |workspace, window, cx| {
 7290            if opened_paths.is_empty() {
 7291                init(workspace, window, cx)
 7292            }
 7293        })?;
 7294        Ok(())
 7295    })
 7296}
 7297
 7298pub fn create_and_open_local_file(
 7299    path: &'static Path,
 7300    window: &mut Window,
 7301    cx: &mut Context<Workspace>,
 7302    default_content: impl 'static + Send + FnOnce() -> Rope,
 7303) -> Task<Result<Box<dyn ItemHandle>>> {
 7304    cx.spawn_in(window, async move |workspace, cx| {
 7305        let fs = workspace.read_with(cx, |workspace, _| workspace.app_state().fs.clone())?;
 7306        if !fs.is_file(path).await {
 7307            fs.create_file(path, Default::default()).await?;
 7308            fs.save(path, &default_content(), Default::default())
 7309                .await?;
 7310        }
 7311
 7312        let mut items = workspace
 7313            .update_in(cx, |workspace, window, cx| {
 7314                workspace.with_local_workspace(window, cx, |workspace, window, cx| {
 7315                    workspace.open_paths(
 7316                        vec![path.to_path_buf()],
 7317                        OpenOptions {
 7318                            visible: Some(OpenVisible::None),
 7319                            ..Default::default()
 7320                        },
 7321                        None,
 7322                        window,
 7323                        cx,
 7324                    )
 7325                })
 7326            })?
 7327            .await?
 7328            .await;
 7329
 7330        let item = items.pop().flatten();
 7331        item.with_context(|| format!("path {path:?} is not a file"))?
 7332    })
 7333}
 7334
 7335pub fn open_remote_project_with_new_connection(
 7336    window: WindowHandle<Workspace>,
 7337    connection_options: RemoteConnectionOptions,
 7338    cancel_rx: oneshot::Receiver<()>,
 7339    delegate: Arc<dyn RemoteClientDelegate>,
 7340    app_state: Arc<AppState>,
 7341    paths: Vec<PathBuf>,
 7342    cx: &mut App,
 7343) -> Task<Result<()>> {
 7344    cx.spawn(async move |cx| {
 7345        let (workspace_id, serialized_workspace) =
 7346            serialize_remote_project(connection_options.clone(), paths.clone(), cx).await?;
 7347
 7348        let session = match cx
 7349            .update(|cx| {
 7350                remote::RemoteClient::new(
 7351                    ConnectionIdentifier::Workspace(workspace_id.0),
 7352                    connection_options,
 7353                    cancel_rx,
 7354                    delegate,
 7355                    cx,
 7356                )
 7357            })?
 7358            .await?
 7359        {
 7360            Some(result) => result,
 7361            None => return Ok(()),
 7362        };
 7363
 7364        let project = cx.update(|cx| {
 7365            project::Project::remote(
 7366                session,
 7367                app_state.client.clone(),
 7368                app_state.node_runtime.clone(),
 7369                app_state.user_store.clone(),
 7370                app_state.languages.clone(),
 7371                app_state.fs.clone(),
 7372                cx,
 7373            )
 7374        })?;
 7375
 7376        open_remote_project_inner(
 7377            project,
 7378            paths,
 7379            workspace_id,
 7380            serialized_workspace,
 7381            app_state,
 7382            window,
 7383            cx,
 7384        )
 7385        .await
 7386    })
 7387}
 7388
 7389pub fn open_remote_project_with_existing_connection(
 7390    connection_options: RemoteConnectionOptions,
 7391    project: Entity<Project>,
 7392    paths: Vec<PathBuf>,
 7393    app_state: Arc<AppState>,
 7394    window: WindowHandle<Workspace>,
 7395    cx: &mut AsyncApp,
 7396) -> Task<Result<()>> {
 7397    cx.spawn(async move |cx| {
 7398        let (workspace_id, serialized_workspace) =
 7399            serialize_remote_project(connection_options.clone(), paths.clone(), cx).await?;
 7400
 7401        open_remote_project_inner(
 7402            project,
 7403            paths,
 7404            workspace_id,
 7405            serialized_workspace,
 7406            app_state,
 7407            window,
 7408            cx,
 7409        )
 7410        .await
 7411    })
 7412}
 7413
 7414async fn open_remote_project_inner(
 7415    project: Entity<Project>,
 7416    paths: Vec<PathBuf>,
 7417    workspace_id: WorkspaceId,
 7418    serialized_workspace: Option<SerializedWorkspace>,
 7419    app_state: Arc<AppState>,
 7420    window: WindowHandle<Workspace>,
 7421    cx: &mut AsyncApp,
 7422) -> Result<()> {
 7423    let toolchains = DB.toolchains(workspace_id).await?;
 7424    for (toolchain, worktree_id, path) in toolchains {
 7425        project
 7426            .update(cx, |this, cx| {
 7427                this.activate_toolchain(ProjectPath { worktree_id, path }, toolchain, cx)
 7428            })?
 7429            .await;
 7430    }
 7431    let mut project_paths_to_open = vec![];
 7432    let mut project_path_errors = vec![];
 7433
 7434    for path in paths {
 7435        let result = cx
 7436            .update(|cx| Workspace::project_path_for_path(project.clone(), &path, true, cx))?
 7437            .await;
 7438        match result {
 7439            Ok((_, project_path)) => {
 7440                project_paths_to_open.push((path.clone(), Some(project_path)));
 7441            }
 7442            Err(error) => {
 7443                project_path_errors.push(error);
 7444            }
 7445        };
 7446    }
 7447
 7448    if project_paths_to_open.is_empty() {
 7449        return Err(project_path_errors.pop().context("no paths given")?);
 7450    }
 7451
 7452    if let Some(detach_session_task) = window
 7453        .update(cx, |_workspace, window, cx| {
 7454            cx.spawn_in(window, async move |this, cx| {
 7455                this.update_in(cx, |this, window, cx| this.remove_from_session(window, cx))
 7456            })
 7457        })
 7458        .ok()
 7459    {
 7460        detach_session_task.await.ok();
 7461    }
 7462
 7463    cx.update_window(window.into(), |_, window, cx| {
 7464        window.replace_root(cx, |window, cx| {
 7465            telemetry::event!("SSH Project Opened");
 7466
 7467            let mut workspace =
 7468                Workspace::new(Some(workspace_id), project, app_state.clone(), window, cx);
 7469            workspace.update_history(cx);
 7470
 7471            if let Some(ref serialized) = serialized_workspace {
 7472                workspace.centered_layout = serialized.centered_layout;
 7473            }
 7474
 7475            workspace
 7476        });
 7477    })?;
 7478
 7479    window
 7480        .update(cx, |_, window, cx| {
 7481            window.activate_window();
 7482            open_items(serialized_workspace, project_paths_to_open, window, cx)
 7483        })?
 7484        .await?;
 7485
 7486    window.update(cx, |workspace, _, cx| {
 7487        for error in project_path_errors {
 7488            if error.error_code() == proto::ErrorCode::DevServerProjectPathDoesNotExist {
 7489                if let Some(path) = error.error_tag("path") {
 7490                    workspace.show_error(&anyhow!("'{path}' does not exist"), cx)
 7491                }
 7492            } else {
 7493                workspace.show_error(&error, cx)
 7494            }
 7495        }
 7496    })?;
 7497
 7498    Ok(())
 7499}
 7500
 7501fn serialize_remote_project(
 7502    connection_options: RemoteConnectionOptions,
 7503    paths: Vec<PathBuf>,
 7504    cx: &AsyncApp,
 7505) -> Task<Result<(WorkspaceId, Option<SerializedWorkspace>)>> {
 7506    cx.background_spawn(async move {
 7507        let remote_connection_id = persistence::DB
 7508            .get_or_create_remote_connection(connection_options)
 7509            .await?;
 7510
 7511        let serialized_workspace =
 7512            persistence::DB.remote_workspace_for_roots(&paths, remote_connection_id);
 7513
 7514        let workspace_id = if let Some(workspace_id) =
 7515            serialized_workspace.as_ref().map(|workspace| workspace.id)
 7516        {
 7517            workspace_id
 7518        } else {
 7519            persistence::DB.next_id().await?
 7520        };
 7521
 7522        Ok((workspace_id, serialized_workspace))
 7523    })
 7524}
 7525
 7526pub fn join_in_room_project(
 7527    project_id: u64,
 7528    follow_user_id: u64,
 7529    app_state: Arc<AppState>,
 7530    cx: &mut App,
 7531) -> Task<Result<()>> {
 7532    let windows = cx.windows();
 7533    cx.spawn(async move |cx| {
 7534        let existing_workspace = windows.into_iter().find_map(|window_handle| {
 7535            window_handle
 7536                .downcast::<Workspace>()
 7537                .and_then(|window_handle| {
 7538                    window_handle
 7539                        .update(cx, |workspace, _window, cx| {
 7540                            if workspace.project().read(cx).remote_id() == Some(project_id) {
 7541                                Some(window_handle)
 7542                            } else {
 7543                                None
 7544                            }
 7545                        })
 7546                        .unwrap_or(None)
 7547                })
 7548        });
 7549
 7550        let workspace = if let Some(existing_workspace) = existing_workspace {
 7551            existing_workspace
 7552        } else {
 7553            let active_call = cx.update(|cx| ActiveCall::global(cx))?;
 7554            let room = active_call
 7555                .read_with(cx, |call, _| call.room().cloned())?
 7556                .context("not in a call")?;
 7557            let project = room
 7558                .update(cx, |room, cx| {
 7559                    room.join_project(
 7560                        project_id,
 7561                        app_state.languages.clone(),
 7562                        app_state.fs.clone(),
 7563                        cx,
 7564                    )
 7565                })?
 7566                .await?;
 7567
 7568            let window_bounds_override = window_bounds_env_override();
 7569            cx.update(|cx| {
 7570                let mut options = (app_state.build_window_options)(None, cx);
 7571                options.window_bounds = window_bounds_override.map(WindowBounds::Windowed);
 7572                cx.open_window(options, |window, cx| {
 7573                    cx.new(|cx| {
 7574                        Workspace::new(Default::default(), project, app_state.clone(), window, cx)
 7575                    })
 7576                })
 7577            })??
 7578        };
 7579
 7580        workspace.update(cx, |workspace, window, cx| {
 7581            cx.activate(true);
 7582            window.activate_window();
 7583
 7584            if let Some(room) = ActiveCall::global(cx).read(cx).room().cloned() {
 7585                let follow_peer_id = room
 7586                    .read(cx)
 7587                    .remote_participants()
 7588                    .iter()
 7589                    .find(|(_, participant)| participant.user.id == follow_user_id)
 7590                    .map(|(_, p)| p.peer_id)
 7591                    .or_else(|| {
 7592                        // If we couldn't follow the given user, follow the host instead.
 7593                        let collaborator = workspace
 7594                            .project()
 7595                            .read(cx)
 7596                            .collaborators()
 7597                            .values()
 7598                            .find(|collaborator| collaborator.is_host)?;
 7599                        Some(collaborator.peer_id)
 7600                    });
 7601
 7602                if let Some(follow_peer_id) = follow_peer_id {
 7603                    workspace.follow(follow_peer_id, window, cx);
 7604                }
 7605            }
 7606        })?;
 7607
 7608        anyhow::Ok(())
 7609    })
 7610}
 7611
 7612pub fn reload(cx: &mut App) {
 7613    let should_confirm = WorkspaceSettings::get_global(cx).confirm_quit;
 7614    let mut workspace_windows = cx
 7615        .windows()
 7616        .into_iter()
 7617        .filter_map(|window| window.downcast::<Workspace>())
 7618        .collect::<Vec<_>>();
 7619
 7620    // If multiple windows have unsaved changes, and need a save prompt,
 7621    // prompt in the active window before switching to a different window.
 7622    workspace_windows.sort_by_key(|window| window.is_active(cx) == Some(false));
 7623
 7624    let mut prompt = None;
 7625    if let (true, Some(window)) = (should_confirm, workspace_windows.first()) {
 7626        prompt = window
 7627            .update(cx, |_, window, cx| {
 7628                window.prompt(
 7629                    PromptLevel::Info,
 7630                    "Are you sure you want to restart?",
 7631                    None,
 7632                    &["Restart", "Cancel"],
 7633                    cx,
 7634                )
 7635            })
 7636            .ok();
 7637    }
 7638
 7639    cx.spawn(async move |cx| {
 7640        if let Some(prompt) = prompt {
 7641            let answer = prompt.await?;
 7642            if answer != 0 {
 7643                return Ok(());
 7644            }
 7645        }
 7646
 7647        // If the user cancels any save prompt, then keep the app open.
 7648        for window in workspace_windows {
 7649            if let Ok(should_close) = window.update(cx, |workspace, window, cx| {
 7650                workspace.prepare_to_close(CloseIntent::Quit, window, cx)
 7651            }) && !should_close.await?
 7652            {
 7653                return Ok(());
 7654            }
 7655        }
 7656        cx.update(|cx| cx.restart())
 7657    })
 7658    .detach_and_log_err(cx);
 7659}
 7660
 7661fn parse_pixel_position_env_var(value: &str) -> Option<Point<Pixels>> {
 7662    let mut parts = value.split(',');
 7663    let x: usize = parts.next()?.parse().ok()?;
 7664    let y: usize = parts.next()?.parse().ok()?;
 7665    Some(point(px(x as f32), px(y as f32)))
 7666}
 7667
 7668fn parse_pixel_size_env_var(value: &str) -> Option<Size<Pixels>> {
 7669    let mut parts = value.split(',');
 7670    let width: usize = parts.next()?.parse().ok()?;
 7671    let height: usize = parts.next()?.parse().ok()?;
 7672    Some(size(px(width as f32), px(height as f32)))
 7673}
 7674
 7675/// Add client-side decorations (rounded corners, shadows, resize handling) when appropriate.
 7676pub fn client_side_decorations(
 7677    element: impl IntoElement,
 7678    window: &mut Window,
 7679    cx: &mut App,
 7680) -> Stateful<Div> {
 7681    const BORDER_SIZE: Pixels = px(1.0);
 7682    let decorations = window.window_decorations();
 7683
 7684    match decorations {
 7685        Decorations::Client { .. } => window.set_client_inset(theme::CLIENT_SIDE_DECORATION_SHADOW),
 7686        Decorations::Server => window.set_client_inset(px(0.0)),
 7687    }
 7688
 7689    struct GlobalResizeEdge(ResizeEdge);
 7690    impl Global for GlobalResizeEdge {}
 7691
 7692    div()
 7693        .id("window-backdrop")
 7694        .bg(transparent_black())
 7695        .map(|div| match decorations {
 7696            Decorations::Server => div,
 7697            Decorations::Client { tiling, .. } => div
 7698                .when(!(tiling.top || tiling.right), |div| {
 7699                    div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7700                })
 7701                .when(!(tiling.top || tiling.left), |div| {
 7702                    div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7703                })
 7704                .when(!(tiling.bottom || tiling.right), |div| {
 7705                    div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7706                })
 7707                .when(!(tiling.bottom || tiling.left), |div| {
 7708                    div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7709                })
 7710                .when(!tiling.top, |div| {
 7711                    div.pt(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7712                })
 7713                .when(!tiling.bottom, |div| {
 7714                    div.pb(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7715                })
 7716                .when(!tiling.left, |div| {
 7717                    div.pl(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7718                })
 7719                .when(!tiling.right, |div| {
 7720                    div.pr(theme::CLIENT_SIDE_DECORATION_SHADOW)
 7721                })
 7722                .on_mouse_move(move |e, window, cx| {
 7723                    let size = window.window_bounds().get_bounds().size;
 7724                    let pos = e.position;
 7725
 7726                    let new_edge =
 7727                        resize_edge(pos, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling);
 7728
 7729                    let edge = cx.try_global::<GlobalResizeEdge>();
 7730                    if new_edge != edge.map(|edge| edge.0) {
 7731                        window
 7732                            .window_handle()
 7733                            .update(cx, |workspace, _, cx| {
 7734                                cx.notify(workspace.entity_id());
 7735                            })
 7736                            .ok();
 7737                    }
 7738                })
 7739                .on_mouse_down(MouseButton::Left, move |e, window, _| {
 7740                    let size = window.window_bounds().get_bounds().size;
 7741                    let pos = e.position;
 7742
 7743                    let edge = match resize_edge(
 7744                        pos,
 7745                        theme::CLIENT_SIDE_DECORATION_SHADOW,
 7746                        size,
 7747                        tiling,
 7748                    ) {
 7749                        Some(value) => value,
 7750                        None => return,
 7751                    };
 7752
 7753                    window.start_window_resize(edge);
 7754                }),
 7755        })
 7756        .size_full()
 7757        .child(
 7758            div()
 7759                .cursor(CursorStyle::Arrow)
 7760                .map(|div| match decorations {
 7761                    Decorations::Server => div,
 7762                    Decorations::Client { tiling } => div
 7763                        .border_color(cx.theme().colors().border)
 7764                        .when(!(tiling.top || tiling.right), |div| {
 7765                            div.rounded_tr(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7766                        })
 7767                        .when(!(tiling.top || tiling.left), |div| {
 7768                            div.rounded_tl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7769                        })
 7770                        .when(!(tiling.bottom || tiling.right), |div| {
 7771                            div.rounded_br(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7772                        })
 7773                        .when(!(tiling.bottom || tiling.left), |div| {
 7774                            div.rounded_bl(theme::CLIENT_SIDE_DECORATION_ROUNDING)
 7775                        })
 7776                        .when(!tiling.top, |div| div.border_t(BORDER_SIZE))
 7777                        .when(!tiling.bottom, |div| div.border_b(BORDER_SIZE))
 7778                        .when(!tiling.left, |div| div.border_l(BORDER_SIZE))
 7779                        .when(!tiling.right, |div| div.border_r(BORDER_SIZE))
 7780                        .when(!tiling.is_tiled(), |div| {
 7781                            div.shadow(vec![gpui::BoxShadow {
 7782                                color: Hsla {
 7783                                    h: 0.,
 7784                                    s: 0.,
 7785                                    l: 0.,
 7786                                    a: 0.4,
 7787                                },
 7788                                blur_radius: theme::CLIENT_SIDE_DECORATION_SHADOW / 2.,
 7789                                spread_radius: px(0.),
 7790                                offset: point(px(0.0), px(0.0)),
 7791                            }])
 7792                        }),
 7793                })
 7794                .on_mouse_move(|_e, _, cx| {
 7795                    cx.stop_propagation();
 7796                })
 7797                .size_full()
 7798                .child(element),
 7799        )
 7800        .map(|div| match decorations {
 7801            Decorations::Server => div,
 7802            Decorations::Client { tiling, .. } => div.child(
 7803                canvas(
 7804                    |_bounds, window, _| {
 7805                        window.insert_hitbox(
 7806                            Bounds::new(
 7807                                point(px(0.0), px(0.0)),
 7808                                window.window_bounds().get_bounds().size,
 7809                            ),
 7810                            HitboxBehavior::Normal,
 7811                        )
 7812                    },
 7813                    move |_bounds, hitbox, window, cx| {
 7814                        let mouse = window.mouse_position();
 7815                        let size = window.window_bounds().get_bounds().size;
 7816                        let Some(edge) =
 7817                            resize_edge(mouse, theme::CLIENT_SIDE_DECORATION_SHADOW, size, tiling)
 7818                        else {
 7819                            return;
 7820                        };
 7821                        cx.set_global(GlobalResizeEdge(edge));
 7822                        window.set_cursor_style(
 7823                            match edge {
 7824                                ResizeEdge::Top | ResizeEdge::Bottom => CursorStyle::ResizeUpDown,
 7825                                ResizeEdge::Left | ResizeEdge::Right => {
 7826                                    CursorStyle::ResizeLeftRight
 7827                                }
 7828                                ResizeEdge::TopLeft | ResizeEdge::BottomRight => {
 7829                                    CursorStyle::ResizeUpLeftDownRight
 7830                                }
 7831                                ResizeEdge::TopRight | ResizeEdge::BottomLeft => {
 7832                                    CursorStyle::ResizeUpRightDownLeft
 7833                                }
 7834                            },
 7835                            &hitbox,
 7836                        );
 7837                    },
 7838                )
 7839                .size_full()
 7840                .absolute(),
 7841            ),
 7842        })
 7843}
 7844
 7845fn resize_edge(
 7846    pos: Point<Pixels>,
 7847    shadow_size: Pixels,
 7848    window_size: Size<Pixels>,
 7849    tiling: Tiling,
 7850) -> Option<ResizeEdge> {
 7851    let bounds = Bounds::new(Point::default(), window_size).inset(shadow_size * 1.5);
 7852    if bounds.contains(&pos) {
 7853        return None;
 7854    }
 7855
 7856    let corner_size = size(shadow_size * 1.5, shadow_size * 1.5);
 7857    let top_left_bounds = Bounds::new(Point::new(px(0.), px(0.)), corner_size);
 7858    if !tiling.top && top_left_bounds.contains(&pos) {
 7859        return Some(ResizeEdge::TopLeft);
 7860    }
 7861
 7862    let top_right_bounds = Bounds::new(
 7863        Point::new(window_size.width - corner_size.width, px(0.)),
 7864        corner_size,
 7865    );
 7866    if !tiling.top && top_right_bounds.contains(&pos) {
 7867        return Some(ResizeEdge::TopRight);
 7868    }
 7869
 7870    let bottom_left_bounds = Bounds::new(
 7871        Point::new(px(0.), window_size.height - corner_size.height),
 7872        corner_size,
 7873    );
 7874    if !tiling.bottom && bottom_left_bounds.contains(&pos) {
 7875        return Some(ResizeEdge::BottomLeft);
 7876    }
 7877
 7878    let bottom_right_bounds = Bounds::new(
 7879        Point::new(
 7880            window_size.width - corner_size.width,
 7881            window_size.height - corner_size.height,
 7882        ),
 7883        corner_size,
 7884    );
 7885    if !tiling.bottom && bottom_right_bounds.contains(&pos) {
 7886        return Some(ResizeEdge::BottomRight);
 7887    }
 7888
 7889    if !tiling.top && pos.y < shadow_size {
 7890        Some(ResizeEdge::Top)
 7891    } else if !tiling.bottom && pos.y > window_size.height - shadow_size {
 7892        Some(ResizeEdge::Bottom)
 7893    } else if !tiling.left && pos.x < shadow_size {
 7894        Some(ResizeEdge::Left)
 7895    } else if !tiling.right && pos.x > window_size.width - shadow_size {
 7896        Some(ResizeEdge::Right)
 7897    } else {
 7898        None
 7899    }
 7900}
 7901
 7902fn join_pane_into_active(
 7903    active_pane: &Entity<Pane>,
 7904    pane: &Entity<Pane>,
 7905    window: &mut Window,
 7906    cx: &mut App,
 7907) {
 7908    if pane == active_pane {
 7909    } else if pane.read(cx).items_len() == 0 {
 7910        pane.update(cx, |_, cx| {
 7911            cx.emit(pane::Event::Remove {
 7912                focus_on_pane: None,
 7913            });
 7914        })
 7915    } else {
 7916        move_all_items(pane, active_pane, window, cx);
 7917    }
 7918}
 7919
 7920fn move_all_items(
 7921    from_pane: &Entity<Pane>,
 7922    to_pane: &Entity<Pane>,
 7923    window: &mut Window,
 7924    cx: &mut App,
 7925) {
 7926    let destination_is_different = from_pane != to_pane;
 7927    let mut moved_items = 0;
 7928    for (item_ix, item_handle) in from_pane
 7929        .read(cx)
 7930        .items()
 7931        .enumerate()
 7932        .map(|(ix, item)| (ix, item.clone()))
 7933        .collect::<Vec<_>>()
 7934    {
 7935        let ix = item_ix - moved_items;
 7936        if destination_is_different {
 7937            // Close item from previous pane
 7938            from_pane.update(cx, |source, cx| {
 7939                source.remove_item_and_focus_on_pane(ix, false, to_pane.clone(), window, cx);
 7940            });
 7941            moved_items += 1;
 7942        }
 7943
 7944        // This automatically removes duplicate items in the pane
 7945        to_pane.update(cx, |destination, cx| {
 7946            destination.add_item(item_handle, true, true, None, window, cx);
 7947            window.focus(&destination.focus_handle(cx))
 7948        });
 7949    }
 7950}
 7951
 7952pub fn move_item(
 7953    source: &Entity<Pane>,
 7954    destination: &Entity<Pane>,
 7955    item_id_to_move: EntityId,
 7956    destination_index: usize,
 7957    activate: bool,
 7958    window: &mut Window,
 7959    cx: &mut App,
 7960) {
 7961    let Some((item_ix, item_handle)) = source
 7962        .read(cx)
 7963        .items()
 7964        .enumerate()
 7965        .find(|(_, item_handle)| item_handle.item_id() == item_id_to_move)
 7966        .map(|(ix, item)| (ix, item.clone()))
 7967    else {
 7968        // Tab was closed during drag
 7969        return;
 7970    };
 7971
 7972    if source != destination {
 7973        // Close item from previous pane
 7974        source.update(cx, |source, cx| {
 7975            source.remove_item_and_focus_on_pane(item_ix, false, destination.clone(), window, cx);
 7976        });
 7977    }
 7978
 7979    // This automatically removes duplicate items in the pane
 7980    destination.update(cx, |destination, cx| {
 7981        destination.add_item_inner(
 7982            item_handle,
 7983            activate,
 7984            activate,
 7985            activate,
 7986            Some(destination_index),
 7987            window,
 7988            cx,
 7989        );
 7990        if activate {
 7991            window.focus(&destination.focus_handle(cx))
 7992        }
 7993    });
 7994}
 7995
 7996pub fn move_active_item(
 7997    source: &Entity<Pane>,
 7998    destination: &Entity<Pane>,
 7999    focus_destination: bool,
 8000    close_if_empty: bool,
 8001    window: &mut Window,
 8002    cx: &mut App,
 8003) {
 8004    if source == destination {
 8005        return;
 8006    }
 8007    let Some(active_item) = source.read(cx).active_item() else {
 8008        return;
 8009    };
 8010    source.update(cx, |source_pane, cx| {
 8011        let item_id = active_item.item_id();
 8012        source_pane.remove_item(item_id, false, close_if_empty, window, cx);
 8013        destination.update(cx, |target_pane, cx| {
 8014            target_pane.add_item(
 8015                active_item,
 8016                focus_destination,
 8017                focus_destination,
 8018                Some(target_pane.items_len()),
 8019                window,
 8020                cx,
 8021            );
 8022        });
 8023    });
 8024}
 8025
 8026pub fn clone_active_item(
 8027    workspace_id: Option<WorkspaceId>,
 8028    source: &Entity<Pane>,
 8029    destination: &Entity<Pane>,
 8030    focus_destination: bool,
 8031    window: &mut Window,
 8032    cx: &mut App,
 8033) {
 8034    if source == destination {
 8035        return;
 8036    }
 8037    let Some(active_item) = source.read(cx).active_item() else {
 8038        return;
 8039    };
 8040    destination.update(cx, |target_pane, cx| {
 8041        let Some(clone) = active_item.clone_on_split(workspace_id, window, cx) else {
 8042            return;
 8043        };
 8044        target_pane.add_item(
 8045            clone,
 8046            focus_destination,
 8047            focus_destination,
 8048            Some(target_pane.items_len()),
 8049            window,
 8050            cx,
 8051        );
 8052    });
 8053}
 8054
 8055#[derive(Debug)]
 8056pub struct WorkspacePosition {
 8057    pub window_bounds: Option<WindowBounds>,
 8058    pub display: Option<Uuid>,
 8059    pub centered_layout: bool,
 8060}
 8061
 8062pub fn remote_workspace_position_from_db(
 8063    connection_options: RemoteConnectionOptions,
 8064    paths_to_open: &[PathBuf],
 8065    cx: &App,
 8066) -> Task<Result<WorkspacePosition>> {
 8067    let paths = paths_to_open.to_vec();
 8068
 8069    cx.background_spawn(async move {
 8070        let remote_connection_id = persistence::DB
 8071            .get_or_create_remote_connection(connection_options)
 8072            .await
 8073            .context("fetching serialized ssh project")?;
 8074        let serialized_workspace =
 8075            persistence::DB.remote_workspace_for_roots(&paths, remote_connection_id);
 8076
 8077        let (window_bounds, display) = if let Some(bounds) = window_bounds_env_override() {
 8078            (Some(WindowBounds::Windowed(bounds)), None)
 8079        } else {
 8080            let restorable_bounds = serialized_workspace
 8081                .as_ref()
 8082                .and_then(|workspace| Some((workspace.display?, workspace.window_bounds?)))
 8083                .or_else(|| {
 8084                    let (display, window_bounds) = DB.last_window().log_err()?;
 8085                    Some((display?, window_bounds?))
 8086                });
 8087
 8088            if let Some((serialized_display, serialized_status)) = restorable_bounds {
 8089                (Some(serialized_status.0), Some(serialized_display))
 8090            } else {
 8091                (None, None)
 8092            }
 8093        };
 8094
 8095        let centered_layout = serialized_workspace
 8096            .as_ref()
 8097            .map(|w| w.centered_layout)
 8098            .unwrap_or(false);
 8099
 8100        Ok(WorkspacePosition {
 8101            window_bounds,
 8102            display,
 8103            centered_layout,
 8104        })
 8105    })
 8106}
 8107
 8108pub fn with_active_or_new_workspace(
 8109    cx: &mut App,
 8110    f: impl FnOnce(&mut Workspace, &mut Window, &mut Context<Workspace>) + Send + 'static,
 8111) {
 8112    match cx.active_window().and_then(|w| w.downcast::<Workspace>()) {
 8113        Some(workspace) => {
 8114            cx.defer(move |cx| {
 8115                workspace
 8116                    .update(cx, |workspace, window, cx| f(workspace, window, cx))
 8117                    .log_err();
 8118            });
 8119        }
 8120        None => {
 8121            let app_state = AppState::global(cx);
 8122            if let Some(app_state) = app_state.upgrade() {
 8123                open_new(
 8124                    OpenOptions::default(),
 8125                    app_state,
 8126                    cx,
 8127                    move |workspace, window, cx| f(workspace, window, cx),
 8128                )
 8129                .detach_and_log_err(cx);
 8130            }
 8131        }
 8132    }
 8133}
 8134
 8135#[cfg(test)]
 8136mod tests {
 8137    use std::{cell::RefCell, rc::Rc};
 8138
 8139    use super::*;
 8140    use crate::{
 8141        dock::{PanelEvent, test::TestPanel},
 8142        item::{
 8143            ItemEvent,
 8144            test::{TestItem, TestProjectItem},
 8145        },
 8146    };
 8147    use fs::FakeFs;
 8148    use gpui::{
 8149        DismissEvent, Empty, EventEmitter, FocusHandle, Focusable, Render, TestAppContext,
 8150        UpdateGlobal, VisualTestContext, px,
 8151    };
 8152    use project::{Project, ProjectEntryId};
 8153    use serde_json::json;
 8154    use settings::SettingsStore;
 8155
 8156    #[gpui::test]
 8157    async fn test_tab_disambiguation(cx: &mut TestAppContext) {
 8158        init_test(cx);
 8159
 8160        let fs = FakeFs::new(cx.executor());
 8161        let project = Project::test(fs, [], cx).await;
 8162        let (workspace, cx) =
 8163            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8164
 8165        // Adding an item with no ambiguity renders the tab without detail.
 8166        let item1 = cx.new(|cx| {
 8167            let mut item = TestItem::new(cx);
 8168            item.tab_descriptions = Some(vec!["c", "b1/c", "a/b1/c"]);
 8169            item
 8170        });
 8171        workspace.update_in(cx, |workspace, window, cx| {
 8172            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8173        });
 8174        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(0)));
 8175
 8176        // Adding an item that creates ambiguity increases the level of detail on
 8177        // both tabs.
 8178        let item2 = cx.new_window_entity(|_window, cx| {
 8179            let mut item = TestItem::new(cx);
 8180            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8181            item
 8182        });
 8183        workspace.update_in(cx, |workspace, window, cx| {
 8184            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8185        });
 8186        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8187        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8188
 8189        // Adding an item that creates ambiguity increases the level of detail only
 8190        // on the ambiguous tabs. In this case, the ambiguity can't be resolved so
 8191        // we stop at the highest detail available.
 8192        let item3 = cx.new(|cx| {
 8193            let mut item = TestItem::new(cx);
 8194            item.tab_descriptions = Some(vec!["c", "b2/c", "a/b2/c"]);
 8195            item
 8196        });
 8197        workspace.update_in(cx, |workspace, window, cx| {
 8198            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8199        });
 8200        item1.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(1)));
 8201        item2.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8202        item3.read_with(cx, |item, _| assert_eq!(item.tab_detail.get(), Some(3)));
 8203    }
 8204
 8205    #[gpui::test]
 8206    async fn test_tracking_active_path(cx: &mut TestAppContext) {
 8207        init_test(cx);
 8208
 8209        let fs = FakeFs::new(cx.executor());
 8210        fs.insert_tree(
 8211            "/root1",
 8212            json!({
 8213                "one.txt": "",
 8214                "two.txt": "",
 8215            }),
 8216        )
 8217        .await;
 8218        fs.insert_tree(
 8219            "/root2",
 8220            json!({
 8221                "three.txt": "",
 8222            }),
 8223        )
 8224        .await;
 8225
 8226        let project = Project::test(fs, ["root1".as_ref()], cx).await;
 8227        let (workspace, cx) =
 8228            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8229        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8230        let worktree_id = project.update(cx, |project, cx| {
 8231            project.worktrees(cx).next().unwrap().read(cx).id()
 8232        });
 8233
 8234        let item1 = cx.new(|cx| {
 8235            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "one.txt", cx)])
 8236        });
 8237        let item2 = cx.new(|cx| {
 8238            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "two.txt", cx)])
 8239        });
 8240
 8241        // Add an item to an empty pane
 8242        workspace.update_in(cx, |workspace, window, cx| {
 8243            workspace.add_item_to_active_pane(Box::new(item1), None, true, window, cx)
 8244        });
 8245        project.update(cx, |project, cx| {
 8246            assert_eq!(
 8247                project.active_entry(),
 8248                project
 8249                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
 8250                    .map(|e| e.id)
 8251            );
 8252        });
 8253        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8254
 8255        // Add a second item to a non-empty pane
 8256        workspace.update_in(cx, |workspace, window, cx| {
 8257            workspace.add_item_to_active_pane(Box::new(item2), None, true, window, cx)
 8258        });
 8259        assert_eq!(cx.window_title().as_deref(), Some("root1 — two.txt"));
 8260        project.update(cx, |project, cx| {
 8261            assert_eq!(
 8262                project.active_entry(),
 8263                project
 8264                    .entry_for_path(&(worktree_id, "two.txt").into(), cx)
 8265                    .map(|e| e.id)
 8266            );
 8267        });
 8268
 8269        // Close the active item
 8270        pane.update_in(cx, |pane, window, cx| {
 8271            pane.close_active_item(&Default::default(), window, cx)
 8272        })
 8273        .await
 8274        .unwrap();
 8275        assert_eq!(cx.window_title().as_deref(), Some("root1 — one.txt"));
 8276        project.update(cx, |project, cx| {
 8277            assert_eq!(
 8278                project.active_entry(),
 8279                project
 8280                    .entry_for_path(&(worktree_id, "one.txt").into(), cx)
 8281                    .map(|e| e.id)
 8282            );
 8283        });
 8284
 8285        // Add a project folder
 8286        project
 8287            .update(cx, |project, cx| {
 8288                project.find_or_create_worktree("root2", true, cx)
 8289            })
 8290            .await
 8291            .unwrap();
 8292        assert_eq!(cx.window_title().as_deref(), Some("root1, root2 — one.txt"));
 8293
 8294        // Remove a project folder
 8295        project.update(cx, |project, cx| project.remove_worktree(worktree_id, cx));
 8296        assert_eq!(cx.window_title().as_deref(), Some("root2 — one.txt"));
 8297    }
 8298
 8299    #[gpui::test]
 8300    async fn test_close_window(cx: &mut TestAppContext) {
 8301        init_test(cx);
 8302
 8303        let fs = FakeFs::new(cx.executor());
 8304        fs.insert_tree("/root", json!({ "one": "" })).await;
 8305
 8306        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8307        let (workspace, cx) =
 8308            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8309
 8310        // When there are no dirty items, there's nothing to do.
 8311        let item1 = cx.new(TestItem::new);
 8312        workspace.update_in(cx, |w, window, cx| {
 8313            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx)
 8314        });
 8315        let task = workspace.update_in(cx, |w, window, cx| {
 8316            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8317        });
 8318        assert!(task.await.unwrap());
 8319
 8320        // When there are dirty untitled items, prompt to save each one. If the user
 8321        // cancels any prompt, then abort.
 8322        let item2 = cx.new(|cx| TestItem::new(cx).with_dirty(true));
 8323        let item3 = cx.new(|cx| {
 8324            TestItem::new(cx)
 8325                .with_dirty(true)
 8326                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8327        });
 8328        workspace.update_in(cx, |w, window, cx| {
 8329            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8330            w.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8331        });
 8332        let task = workspace.update_in(cx, |w, window, cx| {
 8333            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8334        });
 8335        cx.executor().run_until_parked();
 8336        cx.simulate_prompt_answer("Cancel"); // cancel save all
 8337        cx.executor().run_until_parked();
 8338        assert!(!cx.has_pending_prompt());
 8339        assert!(!task.await.unwrap());
 8340    }
 8341
 8342    #[gpui::test]
 8343    async fn test_close_window_with_serializable_items(cx: &mut TestAppContext) {
 8344        init_test(cx);
 8345
 8346        // Register TestItem as a serializable item
 8347        cx.update(|cx| {
 8348            register_serializable_item::<TestItem>(cx);
 8349        });
 8350
 8351        let fs = FakeFs::new(cx.executor());
 8352        fs.insert_tree("/root", json!({ "one": "" })).await;
 8353
 8354        let project = Project::test(fs, ["root".as_ref()], cx).await;
 8355        let (workspace, cx) =
 8356            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
 8357
 8358        // When there are dirty untitled items, but they can serialize, then there is no prompt.
 8359        let item1 = cx.new(|cx| {
 8360            TestItem::new(cx)
 8361                .with_dirty(true)
 8362                .with_serialize(|| Some(Task::ready(Ok(()))))
 8363        });
 8364        let item2 = cx.new(|cx| {
 8365            TestItem::new(cx)
 8366                .with_dirty(true)
 8367                .with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8368                .with_serialize(|| Some(Task::ready(Ok(()))))
 8369        });
 8370        workspace.update_in(cx, |w, window, cx| {
 8371            w.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8372            w.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8373        });
 8374        let task = workspace.update_in(cx, |w, window, cx| {
 8375            w.prepare_to_close(CloseIntent::CloseWindow, window, cx)
 8376        });
 8377        assert!(task.await.unwrap());
 8378    }
 8379
 8380    #[gpui::test]
 8381    async fn test_close_pane_items(cx: &mut TestAppContext) {
 8382        init_test(cx);
 8383
 8384        let fs = FakeFs::new(cx.executor());
 8385
 8386        let project = Project::test(fs, None, cx).await;
 8387        let (workspace, cx) =
 8388            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8389
 8390        let item1 = cx.new(|cx| {
 8391            TestItem::new(cx)
 8392                .with_dirty(true)
 8393                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 8394        });
 8395        let item2 = cx.new(|cx| {
 8396            TestItem::new(cx)
 8397                .with_dirty(true)
 8398                .with_conflict(true)
 8399                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 8400        });
 8401        let item3 = cx.new(|cx| {
 8402            TestItem::new(cx)
 8403                .with_dirty(true)
 8404                .with_conflict(true)
 8405                .with_project_items(&[dirty_project_item(3, "3.txt", cx)])
 8406        });
 8407        let item4 = cx.new(|cx| {
 8408            TestItem::new(cx).with_dirty(true).with_project_items(&[{
 8409                let project_item = TestProjectItem::new_untitled(cx);
 8410                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8411                project_item
 8412            }])
 8413        });
 8414        let pane = workspace.update_in(cx, |workspace, window, cx| {
 8415            workspace.add_item_to_active_pane(Box::new(item1.clone()), None, true, window, cx);
 8416            workspace.add_item_to_active_pane(Box::new(item2.clone()), None, true, window, cx);
 8417            workspace.add_item_to_active_pane(Box::new(item3.clone()), None, true, window, cx);
 8418            workspace.add_item_to_active_pane(Box::new(item4.clone()), None, true, window, cx);
 8419            workspace.active_pane().clone()
 8420        });
 8421
 8422        let close_items = pane.update_in(cx, |pane, window, cx| {
 8423            pane.activate_item(1, true, true, window, cx);
 8424            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8425            let item1_id = item1.item_id();
 8426            let item3_id = item3.item_id();
 8427            let item4_id = item4.item_id();
 8428            pane.close_items(window, cx, SaveIntent::Close, move |id| {
 8429                [item1_id, item3_id, item4_id].contains(&id)
 8430            })
 8431        });
 8432        cx.executor().run_until_parked();
 8433
 8434        assert!(cx.has_pending_prompt());
 8435        cx.simulate_prompt_answer("Save all");
 8436
 8437        cx.executor().run_until_parked();
 8438
 8439        // Item 1 is saved. There's a prompt to save item 3.
 8440        pane.update(cx, |pane, cx| {
 8441            assert_eq!(item1.read(cx).save_count, 1);
 8442            assert_eq!(item1.read(cx).save_as_count, 0);
 8443            assert_eq!(item1.read(cx).reload_count, 0);
 8444            assert_eq!(pane.items_len(), 3);
 8445            assert_eq!(pane.active_item().unwrap().item_id(), item3.item_id());
 8446        });
 8447        assert!(cx.has_pending_prompt());
 8448
 8449        // Cancel saving item 3.
 8450        cx.simulate_prompt_answer("Discard");
 8451        cx.executor().run_until_parked();
 8452
 8453        // Item 3 is reloaded. There's a prompt to save item 4.
 8454        pane.update(cx, |pane, cx| {
 8455            assert_eq!(item3.read(cx).save_count, 0);
 8456            assert_eq!(item3.read(cx).save_as_count, 0);
 8457            assert_eq!(item3.read(cx).reload_count, 1);
 8458            assert_eq!(pane.items_len(), 2);
 8459            assert_eq!(pane.active_item().unwrap().item_id(), item4.item_id());
 8460        });
 8461
 8462        // There's a prompt for a path for item 4.
 8463        cx.simulate_new_path_selection(|_| Some(Default::default()));
 8464        close_items.await.unwrap();
 8465
 8466        // The requested items are closed.
 8467        pane.update(cx, |pane, cx| {
 8468            assert_eq!(item4.read(cx).save_count, 0);
 8469            assert_eq!(item4.read(cx).save_as_count, 1);
 8470            assert_eq!(item4.read(cx).reload_count, 0);
 8471            assert_eq!(pane.items_len(), 1);
 8472            assert_eq!(pane.active_item().unwrap().item_id(), item2.item_id());
 8473        });
 8474    }
 8475
 8476    #[gpui::test]
 8477    async fn test_prompting_to_save_only_on_last_item_for_entry(cx: &mut TestAppContext) {
 8478        init_test(cx);
 8479
 8480        let fs = FakeFs::new(cx.executor());
 8481        let project = Project::test(fs, [], cx).await;
 8482        let (workspace, cx) =
 8483            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8484
 8485        // Create several workspace items with single project entries, and two
 8486        // workspace items with multiple project entries.
 8487        let single_entry_items = (0..=4)
 8488            .map(|project_entry_id| {
 8489                cx.new(|cx| {
 8490                    TestItem::new(cx)
 8491                        .with_dirty(true)
 8492                        .with_project_items(&[dirty_project_item(
 8493                            project_entry_id,
 8494                            &format!("{project_entry_id}.txt"),
 8495                            cx,
 8496                        )])
 8497                })
 8498            })
 8499            .collect::<Vec<_>>();
 8500        let item_2_3 = cx.new(|cx| {
 8501            TestItem::new(cx)
 8502                .with_dirty(true)
 8503                .with_singleton(false)
 8504                .with_project_items(&[
 8505                    single_entry_items[2].read(cx).project_items[0].clone(),
 8506                    single_entry_items[3].read(cx).project_items[0].clone(),
 8507                ])
 8508        });
 8509        let item_3_4 = cx.new(|cx| {
 8510            TestItem::new(cx)
 8511                .with_dirty(true)
 8512                .with_singleton(false)
 8513                .with_project_items(&[
 8514                    single_entry_items[3].read(cx).project_items[0].clone(),
 8515                    single_entry_items[4].read(cx).project_items[0].clone(),
 8516                ])
 8517        });
 8518
 8519        // Create two panes that contain the following project entries:
 8520        //   left pane:
 8521        //     multi-entry items:   (2, 3)
 8522        //     single-entry items:  0, 2, 3, 4
 8523        //   right pane:
 8524        //     single-entry items:  4, 1
 8525        //     multi-entry items:   (3, 4)
 8526        let (left_pane, right_pane) = workspace.update_in(cx, |workspace, window, cx| {
 8527            let left_pane = workspace.active_pane().clone();
 8528            workspace.add_item_to_active_pane(Box::new(item_2_3.clone()), None, true, window, cx);
 8529            workspace.add_item_to_active_pane(
 8530                single_entry_items[0].boxed_clone(),
 8531                None,
 8532                true,
 8533                window,
 8534                cx,
 8535            );
 8536            workspace.add_item_to_active_pane(
 8537                single_entry_items[2].boxed_clone(),
 8538                None,
 8539                true,
 8540                window,
 8541                cx,
 8542            );
 8543            workspace.add_item_to_active_pane(
 8544                single_entry_items[3].boxed_clone(),
 8545                None,
 8546                true,
 8547                window,
 8548                cx,
 8549            );
 8550            workspace.add_item_to_active_pane(
 8551                single_entry_items[4].boxed_clone(),
 8552                None,
 8553                true,
 8554                window,
 8555                cx,
 8556            );
 8557
 8558            let right_pane = workspace
 8559                .split_and_clone(left_pane.clone(), SplitDirection::Right, window, cx)
 8560                .unwrap();
 8561
 8562            right_pane.update(cx, |pane, cx| {
 8563                pane.add_item(
 8564                    single_entry_items[1].boxed_clone(),
 8565                    true,
 8566                    true,
 8567                    None,
 8568                    window,
 8569                    cx,
 8570                );
 8571                pane.add_item(Box::new(item_3_4.clone()), true, true, None, window, cx);
 8572            });
 8573
 8574            (left_pane, right_pane)
 8575        });
 8576
 8577        cx.focus(&right_pane);
 8578
 8579        let mut close = right_pane.update_in(cx, |pane, window, cx| {
 8580            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8581                .unwrap()
 8582        });
 8583        cx.executor().run_until_parked();
 8584
 8585        let msg = cx.pending_prompt().unwrap().0;
 8586        assert!(msg.contains("1.txt"));
 8587        assert!(!msg.contains("2.txt"));
 8588        assert!(!msg.contains("3.txt"));
 8589        assert!(!msg.contains("4.txt"));
 8590
 8591        cx.simulate_prompt_answer("Cancel");
 8592        close.await;
 8593
 8594        left_pane
 8595            .update_in(cx, |left_pane, window, cx| {
 8596                left_pane.close_item_by_id(
 8597                    single_entry_items[3].entity_id(),
 8598                    SaveIntent::Skip,
 8599                    window,
 8600                    cx,
 8601                )
 8602            })
 8603            .await
 8604            .unwrap();
 8605
 8606        close = right_pane.update_in(cx, |pane, window, cx| {
 8607            pane.close_all_items(&CloseAllItems::default(), window, cx)
 8608                .unwrap()
 8609        });
 8610        cx.executor().run_until_parked();
 8611
 8612        let details = cx.pending_prompt().unwrap().1;
 8613        assert!(details.contains("1.txt"));
 8614        assert!(!details.contains("2.txt"));
 8615        assert!(details.contains("3.txt"));
 8616        // ideally this assertion could be made, but today we can only
 8617        // save whole items not project items, so the orphaned item 3 causes
 8618        // 4 to be saved too.
 8619        // assert!(!details.contains("4.txt"));
 8620
 8621        cx.simulate_prompt_answer("Save all");
 8622
 8623        cx.executor().run_until_parked();
 8624        close.await;
 8625        right_pane.read_with(cx, |pane, _| {
 8626            assert_eq!(pane.items_len(), 0);
 8627        });
 8628    }
 8629
 8630    #[gpui::test]
 8631    async fn test_autosave(cx: &mut gpui::TestAppContext) {
 8632        init_test(cx);
 8633
 8634        let fs = FakeFs::new(cx.executor());
 8635        let project = Project::test(fs, [], cx).await;
 8636        let (workspace, cx) =
 8637            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8638        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8639
 8640        let item = cx.new(|cx| {
 8641            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8642        });
 8643        let item_id = item.entity_id();
 8644        workspace.update_in(cx, |workspace, window, cx| {
 8645            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8646        });
 8647
 8648        // Autosave on window change.
 8649        item.update(cx, |item, cx| {
 8650            SettingsStore::update_global(cx, |settings, cx| {
 8651                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8652                    settings.autosave = Some(AutosaveSetting::OnWindowChange);
 8653                })
 8654            });
 8655            item.is_dirty = true;
 8656        });
 8657
 8658        // Deactivating the window saves the file.
 8659        cx.deactivate_window();
 8660        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8661
 8662        // Re-activating the window doesn't save the file.
 8663        cx.update(|window, _| window.activate_window());
 8664        cx.executor().run_until_parked();
 8665        item.read_with(cx, |item, _| assert_eq!(item.save_count, 1));
 8666
 8667        // Autosave on focus change.
 8668        item.update_in(cx, |item, window, cx| {
 8669            cx.focus_self(window);
 8670            SettingsStore::update_global(cx, |settings, cx| {
 8671                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8672                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
 8673                })
 8674            });
 8675            item.is_dirty = true;
 8676        });
 8677
 8678        // Blurring the item saves the file.
 8679        item.update_in(cx, |_, window, _| window.blur());
 8680        cx.executor().run_until_parked();
 8681        item.read_with(cx, |item, _| assert_eq!(item.save_count, 2));
 8682
 8683        // Deactivating the window still saves the file.
 8684        item.update_in(cx, |item, window, cx| {
 8685            cx.focus_self(window);
 8686            item.is_dirty = true;
 8687        });
 8688        cx.deactivate_window();
 8689        item.update(cx, |item, _| assert_eq!(item.save_count, 3));
 8690
 8691        // Autosave after delay.
 8692        item.update(cx, |item, cx| {
 8693            SettingsStore::update_global(cx, |settings, cx| {
 8694                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8695                    settings.autosave = Some(AutosaveSetting::AfterDelay { milliseconds: 500 });
 8696                })
 8697            });
 8698            item.is_dirty = true;
 8699            cx.emit(ItemEvent::Edit);
 8700        });
 8701
 8702        // Delay hasn't fully expired, so the file is still dirty and unsaved.
 8703        cx.executor().advance_clock(Duration::from_millis(250));
 8704        item.read_with(cx, |item, _| assert_eq!(item.save_count, 3));
 8705
 8706        // After delay expires, the file is saved.
 8707        cx.executor().advance_clock(Duration::from_millis(250));
 8708        item.read_with(cx, |item, _| assert_eq!(item.save_count, 4));
 8709
 8710        // Autosave on focus change, ensuring closing the tab counts as such.
 8711        item.update(cx, |item, cx| {
 8712            SettingsStore::update_global(cx, |settings, cx| {
 8713                settings.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 8714                    settings.autosave = Some(AutosaveSetting::OnFocusChange);
 8715                })
 8716            });
 8717            item.is_dirty = true;
 8718            for project_item in &mut item.project_items {
 8719                project_item.update(cx, |project_item, _| project_item.is_dirty = true);
 8720            }
 8721        });
 8722
 8723        pane.update_in(cx, |pane, window, cx| {
 8724            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8725        })
 8726        .await
 8727        .unwrap();
 8728        assert!(!cx.has_pending_prompt());
 8729        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8730
 8731        // Add the item again, ensuring autosave is prevented if the underlying file has been deleted.
 8732        workspace.update_in(cx, |workspace, window, cx| {
 8733            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8734        });
 8735        item.update_in(cx, |item, window, cx| {
 8736            item.project_items[0].update(cx, |item, _| {
 8737                item.entry_id = None;
 8738            });
 8739            item.is_dirty = true;
 8740            window.blur();
 8741        });
 8742        cx.run_until_parked();
 8743        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8744
 8745        // Ensure autosave is prevented for deleted files also when closing the buffer.
 8746        let _close_items = pane.update_in(cx, |pane, window, cx| {
 8747            pane.close_items(window, cx, SaveIntent::Close, move |id| id == item_id)
 8748        });
 8749        cx.run_until_parked();
 8750        assert!(cx.has_pending_prompt());
 8751        item.read_with(cx, |item, _| assert_eq!(item.save_count, 5));
 8752    }
 8753
 8754    #[gpui::test]
 8755    async fn test_pane_navigation(cx: &mut gpui::TestAppContext) {
 8756        init_test(cx);
 8757
 8758        let fs = FakeFs::new(cx.executor());
 8759
 8760        let project = Project::test(fs, [], cx).await;
 8761        let (workspace, cx) =
 8762            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8763
 8764        let item = cx.new(|cx| {
 8765            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "1.txt", cx)])
 8766        });
 8767        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8768        let toolbar = pane.read_with(cx, |pane, _| pane.toolbar().clone());
 8769        let toolbar_notify_count = Rc::new(RefCell::new(0));
 8770
 8771        workspace.update_in(cx, |workspace, window, cx| {
 8772            workspace.add_item_to_active_pane(Box::new(item.clone()), None, true, window, cx);
 8773            let toolbar_notification_count = toolbar_notify_count.clone();
 8774            cx.observe_in(&toolbar, window, move |_, _, _, _| {
 8775                *toolbar_notification_count.borrow_mut() += 1
 8776            })
 8777            .detach();
 8778        });
 8779
 8780        pane.read_with(cx, |pane, _| {
 8781            assert!(!pane.can_navigate_backward());
 8782            assert!(!pane.can_navigate_forward());
 8783        });
 8784
 8785        item.update_in(cx, |item, _, cx| {
 8786            item.set_state("one".to_string(), cx);
 8787        });
 8788
 8789        // Toolbar must be notified to re-render the navigation buttons
 8790        assert_eq!(*toolbar_notify_count.borrow(), 1);
 8791
 8792        pane.read_with(cx, |pane, _| {
 8793            assert!(pane.can_navigate_backward());
 8794            assert!(!pane.can_navigate_forward());
 8795        });
 8796
 8797        workspace
 8798            .update_in(cx, |workspace, window, cx| {
 8799                workspace.go_back(pane.downgrade(), window, cx)
 8800            })
 8801            .await
 8802            .unwrap();
 8803
 8804        assert_eq!(*toolbar_notify_count.borrow(), 2);
 8805        pane.read_with(cx, |pane, _| {
 8806            assert!(!pane.can_navigate_backward());
 8807            assert!(pane.can_navigate_forward());
 8808        });
 8809    }
 8810
 8811    #[gpui::test]
 8812    async fn test_toggle_docks_and_panels(cx: &mut gpui::TestAppContext) {
 8813        init_test(cx);
 8814        let fs = FakeFs::new(cx.executor());
 8815
 8816        let project = Project::test(fs, [], cx).await;
 8817        let (workspace, cx) =
 8818            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8819
 8820        let panel = workspace.update_in(cx, |workspace, window, cx| {
 8821            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 8822            workspace.add_panel(panel.clone(), window, cx);
 8823
 8824            workspace
 8825                .right_dock()
 8826                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
 8827
 8828            panel
 8829        });
 8830
 8831        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 8832        pane.update_in(cx, |pane, window, cx| {
 8833            let item = cx.new(TestItem::new);
 8834            pane.add_item(Box::new(item), true, true, None, window, cx);
 8835        });
 8836
 8837        // Transfer focus from center to panel
 8838        workspace.update_in(cx, |workspace, window, cx| {
 8839            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8840        });
 8841
 8842        workspace.update_in(cx, |workspace, window, cx| {
 8843            assert!(workspace.right_dock().read(cx).is_open());
 8844            assert!(!panel.is_zoomed(window, cx));
 8845            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8846        });
 8847
 8848        // Transfer focus from panel to center
 8849        workspace.update_in(cx, |workspace, window, cx| {
 8850            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8851        });
 8852
 8853        workspace.update_in(cx, |workspace, window, cx| {
 8854            assert!(workspace.right_dock().read(cx).is_open());
 8855            assert!(!panel.is_zoomed(window, cx));
 8856            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8857        });
 8858
 8859        // Close the dock
 8860        workspace.update_in(cx, |workspace, window, cx| {
 8861            workspace.toggle_dock(DockPosition::Right, window, cx);
 8862        });
 8863
 8864        workspace.update_in(cx, |workspace, window, cx| {
 8865            assert!(!workspace.right_dock().read(cx).is_open());
 8866            assert!(!panel.is_zoomed(window, cx));
 8867            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8868        });
 8869
 8870        // Open the dock
 8871        workspace.update_in(cx, |workspace, window, cx| {
 8872            workspace.toggle_dock(DockPosition::Right, window, cx);
 8873        });
 8874
 8875        workspace.update_in(cx, |workspace, window, cx| {
 8876            assert!(workspace.right_dock().read(cx).is_open());
 8877            assert!(!panel.is_zoomed(window, cx));
 8878            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8879        });
 8880
 8881        // Focus and zoom panel
 8882        panel.update_in(cx, |panel, window, cx| {
 8883            cx.focus_self(window);
 8884            panel.set_zoomed(true, window, cx)
 8885        });
 8886
 8887        workspace.update_in(cx, |workspace, window, cx| {
 8888            assert!(workspace.right_dock().read(cx).is_open());
 8889            assert!(panel.is_zoomed(window, cx));
 8890            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8891        });
 8892
 8893        // Transfer focus to the center closes the dock
 8894        workspace.update_in(cx, |workspace, window, cx| {
 8895            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8896        });
 8897
 8898        workspace.update_in(cx, |workspace, window, cx| {
 8899            assert!(!workspace.right_dock().read(cx).is_open());
 8900            assert!(panel.is_zoomed(window, cx));
 8901            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8902        });
 8903
 8904        // Transferring focus back to the panel keeps it zoomed
 8905        workspace.update_in(cx, |workspace, window, cx| {
 8906            workspace.toggle_panel_focus::<TestPanel>(window, cx);
 8907        });
 8908
 8909        workspace.update_in(cx, |workspace, window, cx| {
 8910            assert!(workspace.right_dock().read(cx).is_open());
 8911            assert!(panel.is_zoomed(window, cx));
 8912            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8913        });
 8914
 8915        // Close the dock while it is zoomed
 8916        workspace.update_in(cx, |workspace, window, cx| {
 8917            workspace.toggle_dock(DockPosition::Right, window, cx)
 8918        });
 8919
 8920        workspace.update_in(cx, |workspace, window, cx| {
 8921            assert!(!workspace.right_dock().read(cx).is_open());
 8922            assert!(panel.is_zoomed(window, cx));
 8923            assert!(workspace.zoomed.is_none());
 8924            assert!(!panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8925        });
 8926
 8927        // Opening the dock, when it's zoomed, retains focus
 8928        workspace.update_in(cx, |workspace, window, cx| {
 8929            workspace.toggle_dock(DockPosition::Right, window, cx)
 8930        });
 8931
 8932        workspace.update_in(cx, |workspace, window, cx| {
 8933            assert!(workspace.right_dock().read(cx).is_open());
 8934            assert!(panel.is_zoomed(window, cx));
 8935            assert!(workspace.zoomed.is_some());
 8936            assert!(panel.read(cx).focus_handle(cx).contains_focused(window, cx));
 8937        });
 8938
 8939        // Unzoom and close the panel, zoom the active pane.
 8940        panel.update_in(cx, |panel, window, cx| panel.set_zoomed(false, window, cx));
 8941        workspace.update_in(cx, |workspace, window, cx| {
 8942            workspace.toggle_dock(DockPosition::Right, window, cx)
 8943        });
 8944        pane.update_in(cx, |pane, window, cx| {
 8945            pane.toggle_zoom(&Default::default(), window, cx)
 8946        });
 8947
 8948        // Opening a dock unzooms the pane.
 8949        workspace.update_in(cx, |workspace, window, cx| {
 8950            workspace.toggle_dock(DockPosition::Right, window, cx)
 8951        });
 8952        workspace.update_in(cx, |workspace, window, cx| {
 8953            let pane = pane.read(cx);
 8954            assert!(!pane.is_zoomed());
 8955            assert!(!pane.focus_handle(cx).is_focused(window));
 8956            assert!(workspace.right_dock().read(cx).is_open());
 8957            assert!(workspace.zoomed.is_none());
 8958        });
 8959    }
 8960
 8961    #[gpui::test]
 8962    async fn test_join_pane_into_next(cx: &mut gpui::TestAppContext) {
 8963        init_test(cx);
 8964
 8965        let fs = FakeFs::new(cx.executor());
 8966
 8967        let project = Project::test(fs, None, cx).await;
 8968        let (workspace, cx) =
 8969            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 8970
 8971        // Let's arrange the panes like this:
 8972        //
 8973        // +-----------------------+
 8974        // |         top           |
 8975        // +------+--------+-------+
 8976        // | left | center | right |
 8977        // +------+--------+-------+
 8978        // |        bottom         |
 8979        // +-----------------------+
 8980
 8981        let top_item = cx.new(|cx| {
 8982            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "top.txt", cx)])
 8983        });
 8984        let bottom_item = cx.new(|cx| {
 8985            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "bottom.txt", cx)])
 8986        });
 8987        let left_item = cx.new(|cx| {
 8988            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "left.txt", cx)])
 8989        });
 8990        let right_item = cx.new(|cx| {
 8991            TestItem::new(cx).with_project_items(&[TestProjectItem::new(4, "right.txt", cx)])
 8992        });
 8993        let center_item = cx.new(|cx| {
 8994            TestItem::new(cx).with_project_items(&[TestProjectItem::new(5, "center.txt", cx)])
 8995        });
 8996
 8997        let top_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 8998            let top_pane_id = workspace.active_pane().entity_id();
 8999            workspace.add_item_to_active_pane(Box::new(top_item.clone()), None, false, window, cx);
 9000            workspace.split_pane(
 9001                workspace.active_pane().clone(),
 9002                SplitDirection::Down,
 9003                window,
 9004                cx,
 9005            );
 9006            top_pane_id
 9007        });
 9008        let bottom_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9009            let bottom_pane_id = workspace.active_pane().entity_id();
 9010            workspace.add_item_to_active_pane(
 9011                Box::new(bottom_item.clone()),
 9012                None,
 9013                false,
 9014                window,
 9015                cx,
 9016            );
 9017            workspace.split_pane(
 9018                workspace.active_pane().clone(),
 9019                SplitDirection::Up,
 9020                window,
 9021                cx,
 9022            );
 9023            bottom_pane_id
 9024        });
 9025        let left_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9026            let left_pane_id = workspace.active_pane().entity_id();
 9027            workspace.add_item_to_active_pane(Box::new(left_item.clone()), None, false, window, cx);
 9028            workspace.split_pane(
 9029                workspace.active_pane().clone(),
 9030                SplitDirection::Right,
 9031                window,
 9032                cx,
 9033            );
 9034            left_pane_id
 9035        });
 9036        let right_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9037            let right_pane_id = workspace.active_pane().entity_id();
 9038            workspace.add_item_to_active_pane(
 9039                Box::new(right_item.clone()),
 9040                None,
 9041                false,
 9042                window,
 9043                cx,
 9044            );
 9045            workspace.split_pane(
 9046                workspace.active_pane().clone(),
 9047                SplitDirection::Left,
 9048                window,
 9049                cx,
 9050            );
 9051            right_pane_id
 9052        });
 9053        let center_pane_id = workspace.update_in(cx, |workspace, window, cx| {
 9054            let center_pane_id = workspace.active_pane().entity_id();
 9055            workspace.add_item_to_active_pane(
 9056                Box::new(center_item.clone()),
 9057                None,
 9058                false,
 9059                window,
 9060                cx,
 9061            );
 9062            center_pane_id
 9063        });
 9064        cx.executor().run_until_parked();
 9065
 9066        workspace.update_in(cx, |workspace, window, cx| {
 9067            assert_eq!(center_pane_id, workspace.active_pane().entity_id());
 9068
 9069            // Join into next from center pane into right
 9070            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9071        });
 9072
 9073        workspace.update_in(cx, |workspace, window, cx| {
 9074            let active_pane = workspace.active_pane();
 9075            assert_eq!(right_pane_id, active_pane.entity_id());
 9076            assert_eq!(2, active_pane.read(cx).items_len());
 9077            let item_ids_in_pane =
 9078                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9079            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9080            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9081
 9082            // Join into next from right pane into bottom
 9083            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9084        });
 9085
 9086        workspace.update_in(cx, |workspace, window, cx| {
 9087            let active_pane = workspace.active_pane();
 9088            assert_eq!(bottom_pane_id, active_pane.entity_id());
 9089            assert_eq!(3, active_pane.read(cx).items_len());
 9090            let item_ids_in_pane =
 9091                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9092            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9093            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9094            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9095
 9096            // Join into next from bottom pane into left
 9097            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9098        });
 9099
 9100        workspace.update_in(cx, |workspace, window, cx| {
 9101            let active_pane = workspace.active_pane();
 9102            assert_eq!(left_pane_id, active_pane.entity_id());
 9103            assert_eq!(4, active_pane.read(cx).items_len());
 9104            let item_ids_in_pane =
 9105                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9106            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9107            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9108            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9109            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9110
 9111            // Join into next from left pane into top
 9112            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx);
 9113        });
 9114
 9115        workspace.update_in(cx, |workspace, window, cx| {
 9116            let active_pane = workspace.active_pane();
 9117            assert_eq!(top_pane_id, active_pane.entity_id());
 9118            assert_eq!(5, active_pane.read(cx).items_len());
 9119            let item_ids_in_pane =
 9120                HashSet::from_iter(active_pane.read(cx).items().map(|item| item.item_id()));
 9121            assert!(item_ids_in_pane.contains(&center_item.item_id()));
 9122            assert!(item_ids_in_pane.contains(&right_item.item_id()));
 9123            assert!(item_ids_in_pane.contains(&bottom_item.item_id()));
 9124            assert!(item_ids_in_pane.contains(&left_item.item_id()));
 9125            assert!(item_ids_in_pane.contains(&top_item.item_id()));
 9126
 9127            // Single pane left: no-op
 9128            workspace.join_pane_into_next(workspace.active_pane().clone(), window, cx)
 9129        });
 9130
 9131        workspace.update(cx, |workspace, _cx| {
 9132            let active_pane = workspace.active_pane();
 9133            assert_eq!(top_pane_id, active_pane.entity_id());
 9134        });
 9135    }
 9136
 9137    fn add_an_item_to_active_pane(
 9138        cx: &mut VisualTestContext,
 9139        workspace: &Entity<Workspace>,
 9140        item_id: u64,
 9141    ) -> Entity<TestItem> {
 9142        let item = cx.new(|cx| {
 9143            TestItem::new(cx).with_project_items(&[TestProjectItem::new(
 9144                item_id,
 9145                "item{item_id}.txt",
 9146                cx,
 9147            )])
 9148        });
 9149        workspace.update_in(cx, |workspace, window, cx| {
 9150            workspace.add_item_to_active_pane(Box::new(item.clone()), None, false, window, cx);
 9151        });
 9152        item
 9153    }
 9154
 9155    fn split_pane(cx: &mut VisualTestContext, workspace: &Entity<Workspace>) -> Entity<Pane> {
 9156        workspace.update_in(cx, |workspace, window, cx| {
 9157            workspace.split_pane(
 9158                workspace.active_pane().clone(),
 9159                SplitDirection::Right,
 9160                window,
 9161                cx,
 9162            )
 9163        })
 9164    }
 9165
 9166    #[gpui::test]
 9167    async fn test_join_all_panes(cx: &mut gpui::TestAppContext) {
 9168        init_test(cx);
 9169        let fs = FakeFs::new(cx.executor());
 9170        let project = Project::test(fs, None, cx).await;
 9171        let (workspace, cx) =
 9172            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9173
 9174        add_an_item_to_active_pane(cx, &workspace, 1);
 9175        split_pane(cx, &workspace);
 9176        add_an_item_to_active_pane(cx, &workspace, 2);
 9177        split_pane(cx, &workspace); // empty pane
 9178        split_pane(cx, &workspace);
 9179        let last_item = add_an_item_to_active_pane(cx, &workspace, 3);
 9180
 9181        cx.executor().run_until_parked();
 9182
 9183        workspace.update(cx, |workspace, cx| {
 9184            let num_panes = workspace.panes().len();
 9185            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9186            let active_item = workspace
 9187                .active_pane()
 9188                .read(cx)
 9189                .active_item()
 9190                .expect("item is in focus");
 9191
 9192            assert_eq!(num_panes, 4);
 9193            assert_eq!(num_items_in_current_pane, 1);
 9194            assert_eq!(active_item.item_id(), last_item.item_id());
 9195        });
 9196
 9197        workspace.update_in(cx, |workspace, window, cx| {
 9198            workspace.join_all_panes(window, cx);
 9199        });
 9200
 9201        workspace.update(cx, |workspace, cx| {
 9202            let num_panes = workspace.panes().len();
 9203            let num_items_in_current_pane = workspace.active_pane().read(cx).items().count();
 9204            let active_item = workspace
 9205                .active_pane()
 9206                .read(cx)
 9207                .active_item()
 9208                .expect("item is in focus");
 9209
 9210            assert_eq!(num_panes, 1);
 9211            assert_eq!(num_items_in_current_pane, 3);
 9212            assert_eq!(active_item.item_id(), last_item.item_id());
 9213        });
 9214    }
 9215    struct TestModal(FocusHandle);
 9216
 9217    impl TestModal {
 9218        fn new(_: &mut Window, cx: &mut Context<Self>) -> Self {
 9219            Self(cx.focus_handle())
 9220        }
 9221    }
 9222
 9223    impl EventEmitter<DismissEvent> for TestModal {}
 9224
 9225    impl Focusable for TestModal {
 9226        fn focus_handle(&self, _cx: &App) -> FocusHandle {
 9227            self.0.clone()
 9228        }
 9229    }
 9230
 9231    impl ModalView for TestModal {}
 9232
 9233    impl Render for TestModal {
 9234        fn render(
 9235            &mut self,
 9236            _window: &mut Window,
 9237            _cx: &mut Context<TestModal>,
 9238        ) -> impl IntoElement {
 9239            div().track_focus(&self.0)
 9240        }
 9241    }
 9242
 9243    #[gpui::test]
 9244    async fn test_panels(cx: &mut gpui::TestAppContext) {
 9245        init_test(cx);
 9246        let fs = FakeFs::new(cx.executor());
 9247
 9248        let project = Project::test(fs, [], cx).await;
 9249        let (workspace, cx) =
 9250            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9251
 9252        let (panel_1, panel_2) = workspace.update_in(cx, |workspace, window, cx| {
 9253            let panel_1 = cx.new(|cx| TestPanel::new(DockPosition::Left, cx));
 9254            workspace.add_panel(panel_1.clone(), window, cx);
 9255            workspace.toggle_dock(DockPosition::Left, window, cx);
 9256            let panel_2 = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
 9257            workspace.add_panel(panel_2.clone(), window, cx);
 9258            workspace.toggle_dock(DockPosition::Right, window, cx);
 9259
 9260            let left_dock = workspace.left_dock();
 9261            assert_eq!(
 9262                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9263                panel_1.panel_id()
 9264            );
 9265            assert_eq!(
 9266                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9267                panel_1.size(window, cx)
 9268            );
 9269
 9270            left_dock.update(cx, |left_dock, cx| {
 9271                left_dock.resize_active_panel(Some(px(1337.)), window, cx)
 9272            });
 9273            assert_eq!(
 9274                workspace
 9275                    .right_dock()
 9276                    .read(cx)
 9277                    .visible_panel()
 9278                    .unwrap()
 9279                    .panel_id(),
 9280                panel_2.panel_id(),
 9281            );
 9282
 9283            (panel_1, panel_2)
 9284        });
 9285
 9286        // Move panel_1 to the right
 9287        panel_1.update_in(cx, |panel_1, window, cx| {
 9288            panel_1.set_position(DockPosition::Right, window, cx)
 9289        });
 9290
 9291        workspace.update_in(cx, |workspace, window, cx| {
 9292            // Since panel_1 was visible on the left, it should now be visible now that it's been moved to the right.
 9293            // Since it was the only panel on the left, the left dock should now be closed.
 9294            assert!(!workspace.left_dock().read(cx).is_open());
 9295            assert!(workspace.left_dock().read(cx).visible_panel().is_none());
 9296            let right_dock = workspace.right_dock();
 9297            assert_eq!(
 9298                right_dock.read(cx).visible_panel().unwrap().panel_id(),
 9299                panel_1.panel_id()
 9300            );
 9301            assert_eq!(
 9302                right_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9303                px(1337.)
 9304            );
 9305
 9306            // Now we move panel_2 to the left
 9307            panel_2.set_position(DockPosition::Left, window, cx);
 9308        });
 9309
 9310        workspace.update(cx, |workspace, cx| {
 9311            // Since panel_2 was not visible on the right, we don't open the left dock.
 9312            assert!(!workspace.left_dock().read(cx).is_open());
 9313            // And the right dock is unaffected in its displaying of panel_1
 9314            assert!(workspace.right_dock().read(cx).is_open());
 9315            assert_eq!(
 9316                workspace
 9317                    .right_dock()
 9318                    .read(cx)
 9319                    .visible_panel()
 9320                    .unwrap()
 9321                    .panel_id(),
 9322                panel_1.panel_id(),
 9323            );
 9324        });
 9325
 9326        // Move panel_1 back to the left
 9327        panel_1.update_in(cx, |panel_1, window, cx| {
 9328            panel_1.set_position(DockPosition::Left, window, cx)
 9329        });
 9330
 9331        workspace.update_in(cx, |workspace, window, cx| {
 9332            // Since panel_1 was visible on the right, we open the left dock and make panel_1 active.
 9333            let left_dock = workspace.left_dock();
 9334            assert!(left_dock.read(cx).is_open());
 9335            assert_eq!(
 9336                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9337                panel_1.panel_id()
 9338            );
 9339            assert_eq!(
 9340                left_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9341                px(1337.)
 9342            );
 9343            // And the right dock should be closed as it no longer has any panels.
 9344            assert!(!workspace.right_dock().read(cx).is_open());
 9345
 9346            // Now we move panel_1 to the bottom
 9347            panel_1.set_position(DockPosition::Bottom, window, cx);
 9348        });
 9349
 9350        workspace.update_in(cx, |workspace, window, cx| {
 9351            // Since panel_1 was visible on the left, we close the left dock.
 9352            assert!(!workspace.left_dock().read(cx).is_open());
 9353            // The bottom dock is sized based on the panel's default size,
 9354            // since the panel orientation changed from vertical to horizontal.
 9355            let bottom_dock = workspace.bottom_dock();
 9356            assert_eq!(
 9357                bottom_dock.read(cx).active_panel_size(window, cx).unwrap(),
 9358                panel_1.size(window, cx),
 9359            );
 9360            // Close bottom dock and move panel_1 back to the left.
 9361            bottom_dock.update(cx, |bottom_dock, cx| {
 9362                bottom_dock.set_open(false, window, cx)
 9363            });
 9364            panel_1.set_position(DockPosition::Left, window, cx);
 9365        });
 9366
 9367        // Emit activated event on panel 1
 9368        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Activate));
 9369
 9370        // Now the left dock is open and panel_1 is active and focused.
 9371        workspace.update_in(cx, |workspace, window, cx| {
 9372            let left_dock = workspace.left_dock();
 9373            assert!(left_dock.read(cx).is_open());
 9374            assert_eq!(
 9375                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9376                panel_1.panel_id(),
 9377            );
 9378            assert!(panel_1.focus_handle(cx).is_focused(window));
 9379        });
 9380
 9381        // Emit closed event on panel 2, which is not active
 9382        panel_2.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9383
 9384        // Wo don't close the left dock, because panel_2 wasn't the active panel
 9385        workspace.update(cx, |workspace, cx| {
 9386            let left_dock = workspace.left_dock();
 9387            assert!(left_dock.read(cx).is_open());
 9388            assert_eq!(
 9389                left_dock.read(cx).visible_panel().unwrap().panel_id(),
 9390                panel_1.panel_id(),
 9391            );
 9392        });
 9393
 9394        // Emitting a ZoomIn event shows the panel as zoomed.
 9395        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomIn));
 9396        workspace.read_with(cx, |workspace, _| {
 9397            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9398            assert_eq!(workspace.zoomed_position, Some(DockPosition::Left));
 9399        });
 9400
 9401        // Move panel to another dock while it is zoomed
 9402        panel_1.update_in(cx, |panel, window, cx| {
 9403            panel.set_position(DockPosition::Right, window, cx)
 9404        });
 9405        workspace.read_with(cx, |workspace, _| {
 9406            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9407
 9408            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9409        });
 9410
 9411        // This is a helper for getting a:
 9412        // - valid focus on an element,
 9413        // - that isn't a part of the panes and panels system of the Workspace,
 9414        // - and doesn't trigger the 'on_focus_lost' API.
 9415        let focus_other_view = {
 9416            let workspace = workspace.clone();
 9417            move |cx: &mut VisualTestContext| {
 9418                workspace.update_in(cx, |workspace, window, cx| {
 9419                    if workspace.active_modal::<TestModal>(cx).is_some() {
 9420                        workspace.toggle_modal(window, cx, TestModal::new);
 9421                        workspace.toggle_modal(window, cx, TestModal::new);
 9422                    } else {
 9423                        workspace.toggle_modal(window, cx, TestModal::new);
 9424                    }
 9425                })
 9426            }
 9427        };
 9428
 9429        // If focus is transferred to another view that's not a panel or another pane, we still show
 9430        // the panel as zoomed.
 9431        focus_other_view(cx);
 9432        workspace.read_with(cx, |workspace, _| {
 9433            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9434            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9435        });
 9436
 9437        // If focus is transferred elsewhere in the workspace, the panel is no longer zoomed.
 9438        workspace.update_in(cx, |_workspace, window, cx| {
 9439            cx.focus_self(window);
 9440        });
 9441        workspace.read_with(cx, |workspace, _| {
 9442            assert_eq!(workspace.zoomed, None);
 9443            assert_eq!(workspace.zoomed_position, None);
 9444        });
 9445
 9446        // If focus is transferred again to another view that's not a panel or a pane, we won't
 9447        // show the panel as zoomed because it wasn't zoomed before.
 9448        focus_other_view(cx);
 9449        workspace.read_with(cx, |workspace, _| {
 9450            assert_eq!(workspace.zoomed, None);
 9451            assert_eq!(workspace.zoomed_position, None);
 9452        });
 9453
 9454        // When the panel is activated, it is zoomed again.
 9455        cx.dispatch_action(ToggleRightDock);
 9456        workspace.read_with(cx, |workspace, _| {
 9457            assert_eq!(workspace.zoomed, Some(panel_1.to_any().downgrade()));
 9458            assert_eq!(workspace.zoomed_position, Some(DockPosition::Right));
 9459        });
 9460
 9461        // Emitting a ZoomOut event unzooms the panel.
 9462        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::ZoomOut));
 9463        workspace.read_with(cx, |workspace, _| {
 9464            assert_eq!(workspace.zoomed, None);
 9465            assert_eq!(workspace.zoomed_position, None);
 9466        });
 9467
 9468        // Emit closed event on panel 1, which is active
 9469        panel_1.update(cx, |_, cx| cx.emit(PanelEvent::Close));
 9470
 9471        // Now the left dock is closed, because panel_1 was the active panel
 9472        workspace.update(cx, |workspace, cx| {
 9473            let right_dock = workspace.right_dock();
 9474            assert!(!right_dock.read(cx).is_open());
 9475        });
 9476    }
 9477
 9478    #[gpui::test]
 9479    async fn test_no_save_prompt_when_multi_buffer_dirty_items_closed(cx: &mut TestAppContext) {
 9480        init_test(cx);
 9481
 9482        let fs = FakeFs::new(cx.background_executor.clone());
 9483        let project = Project::test(fs, [], cx).await;
 9484        let (workspace, cx) =
 9485            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9486        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9487
 9488        let dirty_regular_buffer = cx.new(|cx| {
 9489            TestItem::new(cx)
 9490                .with_dirty(true)
 9491                .with_label("1.txt")
 9492                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9493        });
 9494        let dirty_regular_buffer_2 = cx.new(|cx| {
 9495            TestItem::new(cx)
 9496                .with_dirty(true)
 9497                .with_label("2.txt")
 9498                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9499        });
 9500        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9501            TestItem::new(cx)
 9502                .with_dirty(true)
 9503                .with_singleton(false)
 9504                .with_label("Fake Project Search")
 9505                .with_project_items(&[
 9506                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9507                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9508                ])
 9509        });
 9510        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9511        workspace.update_in(cx, |workspace, window, cx| {
 9512            workspace.add_item(
 9513                pane.clone(),
 9514                Box::new(dirty_regular_buffer.clone()),
 9515                None,
 9516                false,
 9517                false,
 9518                window,
 9519                cx,
 9520            );
 9521            workspace.add_item(
 9522                pane.clone(),
 9523                Box::new(dirty_regular_buffer_2.clone()),
 9524                None,
 9525                false,
 9526                false,
 9527                window,
 9528                cx,
 9529            );
 9530            workspace.add_item(
 9531                pane.clone(),
 9532                Box::new(dirty_multi_buffer_with_both.clone()),
 9533                None,
 9534                false,
 9535                false,
 9536                window,
 9537                cx,
 9538            );
 9539        });
 9540
 9541        pane.update_in(cx, |pane, window, cx| {
 9542            pane.activate_item(2, true, true, window, cx);
 9543            assert_eq!(
 9544                pane.active_item().unwrap().item_id(),
 9545                multi_buffer_with_both_files_id,
 9546                "Should select the multi buffer in the pane"
 9547            );
 9548        });
 9549        let close_all_but_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9550            pane.close_other_items(
 9551                &CloseOtherItems {
 9552                    save_intent: Some(SaveIntent::Save),
 9553                    close_pinned: true,
 9554                },
 9555                None,
 9556                window,
 9557                cx,
 9558            )
 9559        });
 9560        cx.background_executor.run_until_parked();
 9561        assert!(!cx.has_pending_prompt());
 9562        close_all_but_multi_buffer_task
 9563            .await
 9564            .expect("Closing all buffers but the multi buffer failed");
 9565        pane.update(cx, |pane, cx| {
 9566            assert_eq!(dirty_regular_buffer.read(cx).save_count, 1);
 9567            assert_eq!(dirty_multi_buffer_with_both.read(cx).save_count, 0);
 9568            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 1);
 9569            assert_eq!(pane.items_len(), 1);
 9570            assert_eq!(
 9571                pane.active_item().unwrap().item_id(),
 9572                multi_buffer_with_both_files_id,
 9573                "Should have only the multi buffer left in the pane"
 9574            );
 9575            assert!(
 9576                dirty_multi_buffer_with_both.read(cx).is_dirty,
 9577                "The multi buffer containing the unsaved buffer should still be dirty"
 9578            );
 9579        });
 9580
 9581        dirty_regular_buffer.update(cx, |buffer, cx| {
 9582            buffer.project_items[0].update(cx, |pi, _| pi.is_dirty = true)
 9583        });
 9584
 9585        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9586            pane.close_active_item(
 9587                &CloseActiveItem {
 9588                    save_intent: Some(SaveIntent::Close),
 9589                    close_pinned: false,
 9590                },
 9591                window,
 9592                cx,
 9593            )
 9594        });
 9595        cx.background_executor.run_until_parked();
 9596        assert!(
 9597            cx.has_pending_prompt(),
 9598            "Dirty multi buffer should prompt a save dialog"
 9599        );
 9600        cx.simulate_prompt_answer("Save");
 9601        cx.background_executor.run_until_parked();
 9602        close_multi_buffer_task
 9603            .await
 9604            .expect("Closing the multi buffer failed");
 9605        pane.update(cx, |pane, cx| {
 9606            assert_eq!(
 9607                dirty_multi_buffer_with_both.read(cx).save_count,
 9608                1,
 9609                "Multi buffer item should get be saved"
 9610            );
 9611            // Test impl does not save inner items, so we do not assert them
 9612            assert_eq!(
 9613                pane.items_len(),
 9614                0,
 9615                "No more items should be left in the pane"
 9616            );
 9617            assert!(pane.active_item().is_none());
 9618        });
 9619    }
 9620
 9621    #[gpui::test]
 9622    async fn test_save_prompt_when_dirty_multi_buffer_closed_with_some_of_its_dirty_items_not_present_in_the_pane(
 9623        cx: &mut TestAppContext,
 9624    ) {
 9625        init_test(cx);
 9626
 9627        let fs = FakeFs::new(cx.background_executor.clone());
 9628        let project = Project::test(fs, [], cx).await;
 9629        let (workspace, cx) =
 9630            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9631        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9632
 9633        let dirty_regular_buffer = cx.new(|cx| {
 9634            TestItem::new(cx)
 9635                .with_dirty(true)
 9636                .with_label("1.txt")
 9637                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
 9638        });
 9639        let dirty_regular_buffer_2 = cx.new(|cx| {
 9640            TestItem::new(cx)
 9641                .with_dirty(true)
 9642                .with_label("2.txt")
 9643                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
 9644        });
 9645        let clear_regular_buffer = cx.new(|cx| {
 9646            TestItem::new(cx)
 9647                .with_label("3.txt")
 9648                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
 9649        });
 9650
 9651        let dirty_multi_buffer_with_both = cx.new(|cx| {
 9652            TestItem::new(cx)
 9653                .with_dirty(true)
 9654                .with_singleton(false)
 9655                .with_label("Fake Project Search")
 9656                .with_project_items(&[
 9657                    dirty_regular_buffer.read(cx).project_items[0].clone(),
 9658                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
 9659                    clear_regular_buffer.read(cx).project_items[0].clone(),
 9660                ])
 9661        });
 9662        let multi_buffer_with_both_files_id = dirty_multi_buffer_with_both.item_id();
 9663        workspace.update_in(cx, |workspace, window, cx| {
 9664            workspace.add_item(
 9665                pane.clone(),
 9666                Box::new(dirty_regular_buffer.clone()),
 9667                None,
 9668                false,
 9669                false,
 9670                window,
 9671                cx,
 9672            );
 9673            workspace.add_item(
 9674                pane.clone(),
 9675                Box::new(dirty_multi_buffer_with_both.clone()),
 9676                None,
 9677                false,
 9678                false,
 9679                window,
 9680                cx,
 9681            );
 9682        });
 9683
 9684        pane.update_in(cx, |pane, window, cx| {
 9685            pane.activate_item(1, true, true, window, cx);
 9686            assert_eq!(
 9687                pane.active_item().unwrap().item_id(),
 9688                multi_buffer_with_both_files_id,
 9689                "Should select the multi buffer in the pane"
 9690            );
 9691        });
 9692        let _close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
 9693            pane.close_active_item(
 9694                &CloseActiveItem {
 9695                    save_intent: None,
 9696                    close_pinned: false,
 9697                },
 9698                window,
 9699                cx,
 9700            )
 9701        });
 9702        cx.background_executor.run_until_parked();
 9703        assert!(
 9704            cx.has_pending_prompt(),
 9705            "With one dirty item from the multi buffer not being in the pane, a save prompt should be shown"
 9706        );
 9707    }
 9708
 9709    /// Tests that when `close_on_file_delete` is enabled, files are automatically
 9710    /// closed when they are deleted from disk.
 9711    #[gpui::test]
 9712    async fn test_close_on_disk_deletion_enabled(cx: &mut TestAppContext) {
 9713        init_test(cx);
 9714
 9715        // Enable the close_on_disk_deletion setting
 9716        cx.update_global(|store: &mut SettingsStore, cx| {
 9717            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9718                settings.close_on_file_delete = Some(true);
 9719            });
 9720        });
 9721
 9722        let fs = FakeFs::new(cx.background_executor.clone());
 9723        let project = Project::test(fs, [], cx).await;
 9724        let (workspace, cx) =
 9725            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9726        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9727
 9728        // Create a test item that simulates a file
 9729        let item = cx.new(|cx| {
 9730            TestItem::new(cx)
 9731                .with_label("test.txt")
 9732                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9733        });
 9734
 9735        // Add item to workspace
 9736        workspace.update_in(cx, |workspace, window, cx| {
 9737            workspace.add_item(
 9738                pane.clone(),
 9739                Box::new(item.clone()),
 9740                None,
 9741                false,
 9742                false,
 9743                window,
 9744                cx,
 9745            );
 9746        });
 9747
 9748        // Verify the item is in the pane
 9749        pane.read_with(cx, |pane, _| {
 9750            assert_eq!(pane.items().count(), 1);
 9751        });
 9752
 9753        // Simulate file deletion by setting the item's deleted state
 9754        item.update(cx, |item, _| {
 9755            item.set_has_deleted_file(true);
 9756        });
 9757
 9758        // Emit UpdateTab event to trigger the close behavior
 9759        cx.run_until_parked();
 9760        item.update(cx, |_, cx| {
 9761            cx.emit(ItemEvent::UpdateTab);
 9762        });
 9763
 9764        // Allow the close operation to complete
 9765        cx.run_until_parked();
 9766
 9767        // Verify the item was automatically closed
 9768        pane.read_with(cx, |pane, _| {
 9769            assert_eq!(
 9770                pane.items().count(),
 9771                0,
 9772                "Item should be automatically closed when file is deleted"
 9773            );
 9774        });
 9775    }
 9776
 9777    /// Tests that when `close_on_file_delete` is disabled (default), files remain
 9778    /// open with a strikethrough when they are deleted from disk.
 9779    #[gpui::test]
 9780    async fn test_close_on_disk_deletion_disabled(cx: &mut TestAppContext) {
 9781        init_test(cx);
 9782
 9783        // Ensure close_on_disk_deletion is disabled (default)
 9784        cx.update_global(|store: &mut SettingsStore, cx| {
 9785            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9786                settings.close_on_file_delete = Some(false);
 9787            });
 9788        });
 9789
 9790        let fs = FakeFs::new(cx.background_executor.clone());
 9791        let project = Project::test(fs, [], cx).await;
 9792        let (workspace, cx) =
 9793            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9794        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9795
 9796        // Create a test item that simulates a file
 9797        let item = cx.new(|cx| {
 9798            TestItem::new(cx)
 9799                .with_label("test.txt")
 9800                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9801        });
 9802
 9803        // Add item to workspace
 9804        workspace.update_in(cx, |workspace, window, cx| {
 9805            workspace.add_item(
 9806                pane.clone(),
 9807                Box::new(item.clone()),
 9808                None,
 9809                false,
 9810                false,
 9811                window,
 9812                cx,
 9813            );
 9814        });
 9815
 9816        // Verify the item is in the pane
 9817        pane.read_with(cx, |pane, _| {
 9818            assert_eq!(pane.items().count(), 1);
 9819        });
 9820
 9821        // Simulate file deletion
 9822        item.update(cx, |item, _| {
 9823            item.set_has_deleted_file(true);
 9824        });
 9825
 9826        // Emit UpdateTab event
 9827        cx.run_until_parked();
 9828        item.update(cx, |_, cx| {
 9829            cx.emit(ItemEvent::UpdateTab);
 9830        });
 9831
 9832        // Allow any potential close operation to complete
 9833        cx.run_until_parked();
 9834
 9835        // Verify the item remains open (with strikethrough)
 9836        pane.read_with(cx, |pane, _| {
 9837            assert_eq!(
 9838                pane.items().count(),
 9839                1,
 9840                "Item should remain open when close_on_disk_deletion is disabled"
 9841            );
 9842        });
 9843
 9844        // Verify the item shows as deleted
 9845        item.read_with(cx, |item, _| {
 9846            assert!(
 9847                item.has_deleted_file,
 9848                "Item should be marked as having deleted file"
 9849            );
 9850        });
 9851    }
 9852
 9853    /// Tests that dirty files are not automatically closed when deleted from disk,
 9854    /// even when `close_on_file_delete` is enabled. This ensures users don't lose
 9855    /// unsaved changes without being prompted.
 9856    #[gpui::test]
 9857    async fn test_close_on_disk_deletion_with_dirty_file(cx: &mut TestAppContext) {
 9858        init_test(cx);
 9859
 9860        // Enable the close_on_file_delete setting
 9861        cx.update_global(|store: &mut SettingsStore, cx| {
 9862            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9863                settings.close_on_file_delete = Some(true);
 9864            });
 9865        });
 9866
 9867        let fs = FakeFs::new(cx.background_executor.clone());
 9868        let project = Project::test(fs, [], cx).await;
 9869        let (workspace, cx) =
 9870            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9871        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9872
 9873        // Create a dirty test item
 9874        let item = cx.new(|cx| {
 9875            TestItem::new(cx)
 9876                .with_dirty(true)
 9877                .with_label("test.txt")
 9878                .with_project_items(&[TestProjectItem::new(1, "test.txt", cx)])
 9879        });
 9880
 9881        // Add item to workspace
 9882        workspace.update_in(cx, |workspace, window, cx| {
 9883            workspace.add_item(
 9884                pane.clone(),
 9885                Box::new(item.clone()),
 9886                None,
 9887                false,
 9888                false,
 9889                window,
 9890                cx,
 9891            );
 9892        });
 9893
 9894        // Simulate file deletion
 9895        item.update(cx, |item, _| {
 9896            item.set_has_deleted_file(true);
 9897        });
 9898
 9899        // Emit UpdateTab event to trigger the close behavior
 9900        cx.run_until_parked();
 9901        item.update(cx, |_, cx| {
 9902            cx.emit(ItemEvent::UpdateTab);
 9903        });
 9904
 9905        // Allow any potential close operation to complete
 9906        cx.run_until_parked();
 9907
 9908        // Verify the item remains open (dirty files are not auto-closed)
 9909        pane.read_with(cx, |pane, _| {
 9910            assert_eq!(
 9911                pane.items().count(),
 9912                1,
 9913                "Dirty items should not be automatically closed even when file is deleted"
 9914            );
 9915        });
 9916
 9917        // Verify the item is marked as deleted and still dirty
 9918        item.read_with(cx, |item, _| {
 9919            assert!(
 9920                item.has_deleted_file,
 9921                "Item should be marked as having deleted file"
 9922            );
 9923            assert!(item.is_dirty, "Item should still be dirty");
 9924        });
 9925    }
 9926
 9927    /// Tests that navigation history is cleaned up when files are auto-closed
 9928    /// due to deletion from disk.
 9929    #[gpui::test]
 9930    async fn test_close_on_disk_deletion_cleans_navigation_history(cx: &mut TestAppContext) {
 9931        init_test(cx);
 9932
 9933        // Enable the close_on_file_delete setting
 9934        cx.update_global(|store: &mut SettingsStore, cx| {
 9935            store.update_user_settings::<WorkspaceSettings>(cx, |settings| {
 9936                settings.close_on_file_delete = Some(true);
 9937            });
 9938        });
 9939
 9940        let fs = FakeFs::new(cx.background_executor.clone());
 9941        let project = Project::test(fs, [], cx).await;
 9942        let (workspace, cx) =
 9943            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
 9944        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
 9945
 9946        // Create test items
 9947        let item1 = cx.new(|cx| {
 9948            TestItem::new(cx)
 9949                .with_label("test1.txt")
 9950                .with_project_items(&[TestProjectItem::new(1, "test1.txt", cx)])
 9951        });
 9952        let item1_id = item1.item_id();
 9953
 9954        let item2 = cx.new(|cx| {
 9955            TestItem::new(cx)
 9956                .with_label("test2.txt")
 9957                .with_project_items(&[TestProjectItem::new(2, "test2.txt", cx)])
 9958        });
 9959
 9960        // Add items to workspace
 9961        workspace.update_in(cx, |workspace, window, cx| {
 9962            workspace.add_item(
 9963                pane.clone(),
 9964                Box::new(item1.clone()),
 9965                None,
 9966                false,
 9967                false,
 9968                window,
 9969                cx,
 9970            );
 9971            workspace.add_item(
 9972                pane.clone(),
 9973                Box::new(item2.clone()),
 9974                None,
 9975                false,
 9976                false,
 9977                window,
 9978                cx,
 9979            );
 9980        });
 9981
 9982        // Activate item1 to ensure it gets navigation entries
 9983        pane.update_in(cx, |pane, window, cx| {
 9984            pane.activate_item(0, true, true, window, cx);
 9985        });
 9986
 9987        // Switch to item2 and back to create navigation history
 9988        pane.update_in(cx, |pane, window, cx| {
 9989            pane.activate_item(1, true, true, window, cx);
 9990        });
 9991        cx.run_until_parked();
 9992
 9993        pane.update_in(cx, |pane, window, cx| {
 9994            pane.activate_item(0, true, true, window, cx);
 9995        });
 9996        cx.run_until_parked();
 9997
 9998        // Simulate file deletion for item1
 9999        item1.update(cx, |item, _| {
10000            item.set_has_deleted_file(true);
10001        });
10002
10003        // Emit UpdateTab event to trigger the close behavior
10004        item1.update(cx, |_, cx| {
10005            cx.emit(ItemEvent::UpdateTab);
10006        });
10007        cx.run_until_parked();
10008
10009        // Verify item1 was closed
10010        pane.read_with(cx, |pane, _| {
10011            assert_eq!(
10012                pane.items().count(),
10013                1,
10014                "Should have 1 item remaining after auto-close"
10015            );
10016        });
10017
10018        // Check navigation history after close
10019        let has_item = pane.read_with(cx, |pane, cx| {
10020            let mut has_item = false;
10021            pane.nav_history().for_each_entry(cx, |entry, _| {
10022                if entry.item.id() == item1_id {
10023                    has_item = true;
10024                }
10025            });
10026            has_item
10027        });
10028
10029        assert!(
10030            !has_item,
10031            "Navigation history should not contain closed item entries"
10032        );
10033    }
10034
10035    #[gpui::test]
10036    async fn test_no_save_prompt_when_dirty_multi_buffer_closed_with_all_of_its_dirty_items_present_in_the_pane(
10037        cx: &mut TestAppContext,
10038    ) {
10039        init_test(cx);
10040
10041        let fs = FakeFs::new(cx.background_executor.clone());
10042        let project = Project::test(fs, [], cx).await;
10043        let (workspace, cx) =
10044            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10045        let pane = workspace.read_with(cx, |workspace, _| workspace.active_pane().clone());
10046
10047        let dirty_regular_buffer = cx.new(|cx| {
10048            TestItem::new(cx)
10049                .with_dirty(true)
10050                .with_label("1.txt")
10051                .with_project_items(&[dirty_project_item(1, "1.txt", cx)])
10052        });
10053        let dirty_regular_buffer_2 = cx.new(|cx| {
10054            TestItem::new(cx)
10055                .with_dirty(true)
10056                .with_label("2.txt")
10057                .with_project_items(&[dirty_project_item(2, "2.txt", cx)])
10058        });
10059        let clear_regular_buffer = cx.new(|cx| {
10060            TestItem::new(cx)
10061                .with_label("3.txt")
10062                .with_project_items(&[TestProjectItem::new(3, "3.txt", cx)])
10063        });
10064
10065        let dirty_multi_buffer = cx.new(|cx| {
10066            TestItem::new(cx)
10067                .with_dirty(true)
10068                .with_singleton(false)
10069                .with_label("Fake Project Search")
10070                .with_project_items(&[
10071                    dirty_regular_buffer.read(cx).project_items[0].clone(),
10072                    dirty_regular_buffer_2.read(cx).project_items[0].clone(),
10073                    clear_regular_buffer.read(cx).project_items[0].clone(),
10074                ])
10075        });
10076        workspace.update_in(cx, |workspace, window, cx| {
10077            workspace.add_item(
10078                pane.clone(),
10079                Box::new(dirty_regular_buffer.clone()),
10080                None,
10081                false,
10082                false,
10083                window,
10084                cx,
10085            );
10086            workspace.add_item(
10087                pane.clone(),
10088                Box::new(dirty_regular_buffer_2.clone()),
10089                None,
10090                false,
10091                false,
10092                window,
10093                cx,
10094            );
10095            workspace.add_item(
10096                pane.clone(),
10097                Box::new(dirty_multi_buffer.clone()),
10098                None,
10099                false,
10100                false,
10101                window,
10102                cx,
10103            );
10104        });
10105
10106        pane.update_in(cx, |pane, window, cx| {
10107            pane.activate_item(2, true, true, window, cx);
10108            assert_eq!(
10109                pane.active_item().unwrap().item_id(),
10110                dirty_multi_buffer.item_id(),
10111                "Should select the multi buffer in the pane"
10112            );
10113        });
10114        let close_multi_buffer_task = pane.update_in(cx, |pane, window, cx| {
10115            pane.close_active_item(
10116                &CloseActiveItem {
10117                    save_intent: None,
10118                    close_pinned: false,
10119                },
10120                window,
10121                cx,
10122            )
10123        });
10124        cx.background_executor.run_until_parked();
10125        assert!(
10126            !cx.has_pending_prompt(),
10127            "All dirty items from the multi buffer are in the pane still, no save prompts should be shown"
10128        );
10129        close_multi_buffer_task
10130            .await
10131            .expect("Closing multi buffer failed");
10132        pane.update(cx, |pane, cx| {
10133            assert_eq!(dirty_regular_buffer.read(cx).save_count, 0);
10134            assert_eq!(dirty_multi_buffer.read(cx).save_count, 0);
10135            assert_eq!(dirty_regular_buffer_2.read(cx).save_count, 0);
10136            assert_eq!(
10137                pane.items()
10138                    .map(|item| item.item_id())
10139                    .sorted()
10140                    .collect::<Vec<_>>(),
10141                vec![
10142                    dirty_regular_buffer.item_id(),
10143                    dirty_regular_buffer_2.item_id(),
10144                ],
10145                "Should have no multi buffer left in the pane"
10146            );
10147            assert!(dirty_regular_buffer.read(cx).is_dirty);
10148            assert!(dirty_regular_buffer_2.read(cx).is_dirty);
10149        });
10150    }
10151
10152    #[gpui::test]
10153    async fn test_move_focused_panel_to_next_position(cx: &mut gpui::TestAppContext) {
10154        init_test(cx);
10155        let fs = FakeFs::new(cx.executor());
10156        let project = Project::test(fs, [], cx).await;
10157        let (workspace, cx) =
10158            cx.add_window_view(|window, cx| Workspace::test_new(project, window, cx));
10159
10160        // Add a new panel to the right dock, opening the dock and setting the
10161        // focus to the new panel.
10162        let panel = workspace.update_in(cx, |workspace, window, cx| {
10163            let panel = cx.new(|cx| TestPanel::new(DockPosition::Right, cx));
10164            workspace.add_panel(panel.clone(), window, cx);
10165
10166            workspace
10167                .right_dock()
10168                .update(cx, |right_dock, cx| right_dock.set_open(true, window, cx));
10169
10170            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10171
10172            panel
10173        });
10174
10175        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10176        // panel to the next valid position which, in this case, is the left
10177        // dock.
10178        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10179        workspace.update(cx, |workspace, cx| {
10180            assert!(workspace.left_dock().read(cx).is_open());
10181            assert_eq!(panel.read(cx).position, DockPosition::Left);
10182        });
10183
10184        // Dispatch the `MoveFocusedPanelToNextPosition` action, moving the
10185        // panel to the next valid position which, in this case, is the bottom
10186        // dock.
10187        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10188        workspace.update(cx, |workspace, cx| {
10189            assert!(workspace.bottom_dock().read(cx).is_open());
10190            assert_eq!(panel.read(cx).position, DockPosition::Bottom);
10191        });
10192
10193        // Dispatch the `MoveFocusedPanelToNextPosition` action again, this time
10194        // around moving the panel to its initial position, the right dock.
10195        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10196        workspace.update(cx, |workspace, cx| {
10197            assert!(workspace.right_dock().read(cx).is_open());
10198            assert_eq!(panel.read(cx).position, DockPosition::Right);
10199        });
10200
10201        // Remove focus from the panel, ensuring that, if the panel is not
10202        // focused, the `MoveFocusedPanelToNextPosition` action does not update
10203        // the panel's position, so the panel is still in the right dock.
10204        workspace.update_in(cx, |workspace, window, cx| {
10205            workspace.toggle_panel_focus::<TestPanel>(window, cx);
10206        });
10207
10208        cx.dispatch_action(MoveFocusedPanelToNextPosition);
10209        workspace.update(cx, |workspace, cx| {
10210            assert!(workspace.right_dock().read(cx).is_open());
10211            assert_eq!(panel.read(cx).position, DockPosition::Right);
10212        });
10213    }
10214
10215    #[gpui::test]
10216    async fn test_moving_items_create_panes(cx: &mut TestAppContext) {
10217        init_test(cx);
10218
10219        let fs = FakeFs::new(cx.executor());
10220        let project = Project::test(fs, [], cx).await;
10221        let (workspace, cx) =
10222            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10223
10224        let item_1 = cx.new(|cx| {
10225            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10226        });
10227        workspace.update_in(cx, |workspace, window, cx| {
10228            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10229            workspace.move_item_to_pane_in_direction(
10230                &MoveItemToPaneInDirection {
10231                    direction: SplitDirection::Right,
10232                    focus: true,
10233                    clone: false,
10234                },
10235                window,
10236                cx,
10237            );
10238            workspace.move_item_to_pane_at_index(
10239                &MoveItemToPane {
10240                    destination: 3,
10241                    focus: true,
10242                    clone: false,
10243                },
10244                window,
10245                cx,
10246            );
10247
10248            assert_eq!(workspace.panes.len(), 1, "No new panes were created");
10249            assert_eq!(
10250                pane_items_paths(&workspace.active_pane, cx),
10251                vec!["first.txt".to_string()],
10252                "Single item was not moved anywhere"
10253            );
10254        });
10255
10256        let item_2 = cx.new(|cx| {
10257            TestItem::new(cx).with_project_items(&[TestProjectItem::new(2, "second.txt", cx)])
10258        });
10259        workspace.update_in(cx, |workspace, window, cx| {
10260            workspace.add_item_to_active_pane(Box::new(item_2), None, true, window, cx);
10261            assert_eq!(
10262                pane_items_paths(&workspace.panes[0], cx),
10263                vec!["first.txt".to_string(), "second.txt".to_string()],
10264            );
10265            workspace.move_item_to_pane_in_direction(
10266                &MoveItemToPaneInDirection {
10267                    direction: SplitDirection::Right,
10268                    focus: true,
10269                    clone: false,
10270                },
10271                window,
10272                cx,
10273            );
10274
10275            assert_eq!(workspace.panes.len(), 2, "A new pane should be created");
10276            assert_eq!(
10277                pane_items_paths(&workspace.panes[0], cx),
10278                vec!["first.txt".to_string()],
10279                "After moving, one item should be left in the original pane"
10280            );
10281            assert_eq!(
10282                pane_items_paths(&workspace.panes[1], cx),
10283                vec!["second.txt".to_string()],
10284                "New item should have been moved to the new pane"
10285            );
10286        });
10287
10288        let item_3 = cx.new(|cx| {
10289            TestItem::new(cx).with_project_items(&[TestProjectItem::new(3, "third.txt", cx)])
10290        });
10291        workspace.update_in(cx, |workspace, window, cx| {
10292            let original_pane = workspace.panes[0].clone();
10293            workspace.set_active_pane(&original_pane, window, cx);
10294            workspace.add_item_to_active_pane(Box::new(item_3), None, true, window, cx);
10295            assert_eq!(workspace.panes.len(), 2, "No new panes were created");
10296            assert_eq!(
10297                pane_items_paths(&workspace.active_pane, cx),
10298                vec!["first.txt".to_string(), "third.txt".to_string()],
10299                "New pane should be ready to move one item out"
10300            );
10301
10302            workspace.move_item_to_pane_at_index(
10303                &MoveItemToPane {
10304                    destination: 3,
10305                    focus: true,
10306                    clone: false,
10307                },
10308                window,
10309                cx,
10310            );
10311            assert_eq!(workspace.panes.len(), 3, "A new pane should be created");
10312            assert_eq!(
10313                pane_items_paths(&workspace.active_pane, cx),
10314                vec!["first.txt".to_string()],
10315                "After moving, one item should be left in the original pane"
10316            );
10317            assert_eq!(
10318                pane_items_paths(&workspace.panes[1], cx),
10319                vec!["second.txt".to_string()],
10320                "Previously created pane should be unchanged"
10321            );
10322            assert_eq!(
10323                pane_items_paths(&workspace.panes[2], cx),
10324                vec!["third.txt".to_string()],
10325                "New item should have been moved to the new pane"
10326            );
10327        });
10328    }
10329
10330    #[gpui::test]
10331    async fn test_moving_items_can_clone_panes(cx: &mut TestAppContext) {
10332        init_test(cx);
10333
10334        let fs = FakeFs::new(cx.executor());
10335        let project = Project::test(fs, [], cx).await;
10336        let (workspace, cx) =
10337            cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10338
10339        let item_1 = cx.new(|cx| {
10340            TestItem::new(cx).with_project_items(&[TestProjectItem::new(1, "first.txt", cx)])
10341        });
10342        workspace.update_in(cx, |workspace, window, cx| {
10343            workspace.add_item_to_active_pane(Box::new(item_1), None, true, window, cx);
10344            workspace.move_item_to_pane_in_direction(
10345                &MoveItemToPaneInDirection {
10346                    direction: SplitDirection::Right,
10347                    focus: true,
10348                    clone: true,
10349                },
10350                window,
10351                cx,
10352            );
10353            workspace.move_item_to_pane_at_index(
10354                &MoveItemToPane {
10355                    destination: 3,
10356                    focus: true,
10357                    clone: true,
10358                },
10359                window,
10360                cx,
10361            );
10362
10363            assert_eq!(workspace.panes.len(), 3, "Two new panes were created");
10364            for pane in workspace.panes() {
10365                assert_eq!(
10366                    pane_items_paths(pane, cx),
10367                    vec!["first.txt".to_string()],
10368                    "Single item exists in all panes"
10369                );
10370            }
10371        });
10372
10373        // verify that the active pane has been updated after waiting for the
10374        // pane focus event to fire and resolve
10375        workspace.read_with(cx, |workspace, _app| {
10376            assert_eq!(
10377                workspace.active_pane(),
10378                &workspace.panes[2],
10379                "The third pane should be the active one: {:?}",
10380                workspace.panes
10381            );
10382        })
10383    }
10384
10385    mod register_project_item_tests {
10386
10387        use super::*;
10388
10389        // View
10390        struct TestPngItemView {
10391            focus_handle: FocusHandle,
10392        }
10393        // Model
10394        struct TestPngItem {}
10395
10396        impl project::ProjectItem for TestPngItem {
10397            fn try_open(
10398                _project: &Entity<Project>,
10399                path: &ProjectPath,
10400                cx: &mut App,
10401            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10402                if path.path.extension().unwrap() == "png" {
10403                    Some(cx.spawn(async move |cx| cx.new(|_| TestPngItem {})))
10404                } else {
10405                    None
10406                }
10407            }
10408
10409            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10410                None
10411            }
10412
10413            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10414                None
10415            }
10416
10417            fn is_dirty(&self) -> bool {
10418                false
10419            }
10420        }
10421
10422        impl Item for TestPngItemView {
10423            type Event = ();
10424            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10425                "".into()
10426            }
10427        }
10428        impl EventEmitter<()> for TestPngItemView {}
10429        impl Focusable for TestPngItemView {
10430            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10431                self.focus_handle.clone()
10432            }
10433        }
10434
10435        impl Render for TestPngItemView {
10436            fn render(
10437                &mut self,
10438                _window: &mut Window,
10439                _cx: &mut Context<Self>,
10440            ) -> impl IntoElement {
10441                Empty
10442            }
10443        }
10444
10445        impl ProjectItem for TestPngItemView {
10446            type Item = TestPngItem;
10447
10448            fn for_project_item(
10449                _project: Entity<Project>,
10450                _pane: Option<&Pane>,
10451                _item: Entity<Self::Item>,
10452                _: &mut Window,
10453                cx: &mut Context<Self>,
10454            ) -> Self
10455            where
10456                Self: Sized,
10457            {
10458                Self {
10459                    focus_handle: cx.focus_handle(),
10460                }
10461            }
10462        }
10463
10464        // View
10465        struct TestIpynbItemView {
10466            focus_handle: FocusHandle,
10467        }
10468        // Model
10469        struct TestIpynbItem {}
10470
10471        impl project::ProjectItem for TestIpynbItem {
10472            fn try_open(
10473                _project: &Entity<Project>,
10474                path: &ProjectPath,
10475                cx: &mut App,
10476            ) -> Option<Task<anyhow::Result<Entity<Self>>>> {
10477                if path.path.extension().unwrap() == "ipynb" {
10478                    Some(cx.spawn(async move |cx| cx.new(|_| TestIpynbItem {})))
10479                } else {
10480                    None
10481                }
10482            }
10483
10484            fn entry_id(&self, _: &App) -> Option<ProjectEntryId> {
10485                None
10486            }
10487
10488            fn project_path(&self, _: &App) -> Option<ProjectPath> {
10489                None
10490            }
10491
10492            fn is_dirty(&self) -> bool {
10493                false
10494            }
10495        }
10496
10497        impl Item for TestIpynbItemView {
10498            type Event = ();
10499            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10500                "".into()
10501            }
10502        }
10503        impl EventEmitter<()> for TestIpynbItemView {}
10504        impl Focusable for TestIpynbItemView {
10505            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10506                self.focus_handle.clone()
10507            }
10508        }
10509
10510        impl Render for TestIpynbItemView {
10511            fn render(
10512                &mut self,
10513                _window: &mut Window,
10514                _cx: &mut Context<Self>,
10515            ) -> impl IntoElement {
10516                Empty
10517            }
10518        }
10519
10520        impl ProjectItem for TestIpynbItemView {
10521            type Item = TestIpynbItem;
10522
10523            fn for_project_item(
10524                _project: Entity<Project>,
10525                _pane: Option<&Pane>,
10526                _item: Entity<Self::Item>,
10527                _: &mut Window,
10528                cx: &mut Context<Self>,
10529            ) -> Self
10530            where
10531                Self: Sized,
10532            {
10533                Self {
10534                    focus_handle: cx.focus_handle(),
10535                }
10536            }
10537        }
10538
10539        struct TestAlternatePngItemView {
10540            focus_handle: FocusHandle,
10541        }
10542
10543        impl Item for TestAlternatePngItemView {
10544            type Event = ();
10545            fn tab_content_text(&self, _detail: usize, _cx: &App) -> SharedString {
10546                "".into()
10547            }
10548        }
10549
10550        impl EventEmitter<()> for TestAlternatePngItemView {}
10551        impl Focusable for TestAlternatePngItemView {
10552            fn focus_handle(&self, _cx: &App) -> FocusHandle {
10553                self.focus_handle.clone()
10554            }
10555        }
10556
10557        impl Render for TestAlternatePngItemView {
10558            fn render(
10559                &mut self,
10560                _window: &mut Window,
10561                _cx: &mut Context<Self>,
10562            ) -> impl IntoElement {
10563                Empty
10564            }
10565        }
10566
10567        impl ProjectItem for TestAlternatePngItemView {
10568            type Item = TestPngItem;
10569
10570            fn for_project_item(
10571                _project: Entity<Project>,
10572                _pane: Option<&Pane>,
10573                _item: Entity<Self::Item>,
10574                _: &mut Window,
10575                cx: &mut Context<Self>,
10576            ) -> Self
10577            where
10578                Self: Sized,
10579            {
10580                Self {
10581                    focus_handle: cx.focus_handle(),
10582                }
10583            }
10584        }
10585
10586        #[gpui::test]
10587        async fn test_register_project_item(cx: &mut TestAppContext) {
10588            init_test(cx);
10589
10590            cx.update(|cx| {
10591                register_project_item::<TestPngItemView>(cx);
10592                register_project_item::<TestIpynbItemView>(cx);
10593            });
10594
10595            let fs = FakeFs::new(cx.executor());
10596            fs.insert_tree(
10597                "/root1",
10598                json!({
10599                    "one.png": "BINARYDATAHERE",
10600                    "two.ipynb": "{ totally a notebook }",
10601                    "three.txt": "editing text, sure why not?"
10602                }),
10603            )
10604            .await;
10605
10606            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10607            let (workspace, cx) =
10608                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10609
10610            let worktree_id = project.update(cx, |project, cx| {
10611                project.worktrees(cx).next().unwrap().read(cx).id()
10612            });
10613
10614            let handle = workspace
10615                .update_in(cx, |workspace, window, cx| {
10616                    let project_path = (worktree_id, "one.png");
10617                    workspace.open_path(project_path, None, true, window, cx)
10618                })
10619                .await
10620                .unwrap();
10621
10622            // Now we can check if the handle we got back errored or not
10623            assert_eq!(
10624                handle.to_any().entity_type(),
10625                TypeId::of::<TestPngItemView>()
10626            );
10627
10628            let handle = workspace
10629                .update_in(cx, |workspace, window, cx| {
10630                    let project_path = (worktree_id, "two.ipynb");
10631                    workspace.open_path(project_path, None, true, window, cx)
10632                })
10633                .await
10634                .unwrap();
10635
10636            assert_eq!(
10637                handle.to_any().entity_type(),
10638                TypeId::of::<TestIpynbItemView>()
10639            );
10640
10641            let handle = workspace
10642                .update_in(cx, |workspace, window, cx| {
10643                    let project_path = (worktree_id, "three.txt");
10644                    workspace.open_path(project_path, None, true, window, cx)
10645                })
10646                .await;
10647            assert!(handle.is_err());
10648        }
10649
10650        #[gpui::test]
10651        async fn test_register_project_item_two_enter_one_leaves(cx: &mut TestAppContext) {
10652            init_test(cx);
10653
10654            cx.update(|cx| {
10655                register_project_item::<TestPngItemView>(cx);
10656                register_project_item::<TestAlternatePngItemView>(cx);
10657            });
10658
10659            let fs = FakeFs::new(cx.executor());
10660            fs.insert_tree(
10661                "/root1",
10662                json!({
10663                    "one.png": "BINARYDATAHERE",
10664                    "two.ipynb": "{ totally a notebook }",
10665                    "three.txt": "editing text, sure why not?"
10666                }),
10667            )
10668            .await;
10669            let project = Project::test(fs, ["root1".as_ref()], cx).await;
10670            let (workspace, cx) =
10671                cx.add_window_view(|window, cx| Workspace::test_new(project.clone(), window, cx));
10672            let worktree_id = project.update(cx, |project, cx| {
10673                project.worktrees(cx).next().unwrap().read(cx).id()
10674            });
10675
10676            let handle = workspace
10677                .update_in(cx, |workspace, window, cx| {
10678                    let project_path = (worktree_id, "one.png");
10679                    workspace.open_path(project_path, None, true, window, cx)
10680                })
10681                .await
10682                .unwrap();
10683
10684            // This _must_ be the second item registered
10685            assert_eq!(
10686                handle.to_any().entity_type(),
10687                TypeId::of::<TestAlternatePngItemView>()
10688            );
10689
10690            let handle = workspace
10691                .update_in(cx, |workspace, window, cx| {
10692                    let project_path = (worktree_id, "three.txt");
10693                    workspace.open_path(project_path, None, true, window, cx)
10694                })
10695                .await;
10696            assert!(handle.is_err());
10697        }
10698    }
10699
10700    fn pane_items_paths(pane: &Entity<Pane>, cx: &App) -> Vec<String> {
10701        pane.read(cx)
10702            .items()
10703            .flat_map(|item| {
10704                item.project_paths(cx)
10705                    .into_iter()
10706                    .map(|path| path.path.to_string_lossy().to_string())
10707            })
10708            .collect()
10709    }
10710
10711    pub fn init_test(cx: &mut TestAppContext) {
10712        cx.update(|cx| {
10713            let settings_store = SettingsStore::test(cx);
10714            cx.set_global(settings_store);
10715            theme::init(theme::LoadThemes::JustBase, cx);
10716            language::init(cx);
10717            crate::init_settings(cx);
10718            Project::init_settings(cx);
10719        });
10720    }
10721
10722    fn dirty_project_item(id: u64, path: &str, cx: &mut App) -> Entity<TestProjectItem> {
10723        let item = TestProjectItem::new(id, path, cx);
10724        item.update(cx, |item, _| {
10725            item.is_dirty = true;
10726        });
10727        item
10728    }
10729}